+++ /dev/null
-Date: Thu, 29 Apr 2004 14:10:41 -0700 (PDT)
-From: Linus Torvalds <torvalds@osdl.org>
-To: Giuliano Colla
-cc: Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
-Subject: Re: [hsflinux] [PATCH] Blacklist binary-only modules lying about
- their license
-Message-ID: <Pine.LNX.4.58.0404291404100.1629@ppc970.osdl.org>
-
-On Thu, 29 Apr 2004, Giuliano Colla wrote:
->
-> Let's try not to be ridiculous, please.
-
-It's not abotu being ridiculous. It's about honoring peoples copyrights.
-
-> As an end user, if I buy a full fledged modem, I get some amount of
-> proprietary, non GPL, code which executes within the board or the
-> PCMCIA card of the modem. The GPL driver may even support the
-> functionality of downloading a new version of *proprietary* code into
-> the flash Eprom of the device. The GPL linux driver interfaces with it,
-> and all is kosher.
-
-Indeed. Everything is kosher, because the other piece of hardware and
-software has _nothing_ to do with the kernel. It's not linked into it, it
-cannot reasonably corrupt internal kernel data structures with random
-pointer bugs, and in general you can think of firmware as part of the
-_hardware_, not the software of the machine.
-
-> On the other hand, I have the misfortune of being stuck with a
-> soft-modem, roughly the *same* proprietary code is provided as a binary
-> file, and a linux driver (source provided) interfaces with it. In that
-> case the kernel is flagged as "tainted".
-
-It is flagged as tainted, because your argument that it is "the same code"
-is totally BOGUS AND UNTRUE!
-
-In the binary kernel module case, a bug in the code corrupts random data
-structures, or accesses kernel internals without holding the proper locks,
-or does a million other things wrong, BECAUSE A KERNEL MODULE IS VERY
-INTIMATELY LINKED WITH THE KERNEL.
-
-A kernel module is _not_ a separate work, and can in _no_ way be seen as
-"part of the hardware". It's very much a part of the _kernel_. And the
-kernel developers require that such code be GPL'd so that it can be fixed,
-or if there's a valid argument that it's not a derived work and not GPL'd,
-then the kernel developers who have to support the end result mess most
-definitely do need to know about the taint.
-
-You are not the first (and sadly, you likely won't be the last) person to
-equate binary kernel modules with binary firmware. And I tell you that
-such a comparison is ABSOLUTE CRAPOLA. There's a damn big difference
-between running firmware on another chip behind a PCI bus, and linking
-into the kernel directly.
-
-And if you don't see that difference, then you are either terminally
-stupid, or you have some ulterior reason to claim that they are the same
-case even though they clearly are NOT.
-
-> Can you honestly tell apart the two cases, if you don't make a it a case
-> of "religion war"?
-
-It has absolutely nothing to do with religion.
-
- Linus
-
-Date: Fri, 5 Dec 2003 09:19:52 -0800 (PST)
-From: Linus Torvalds <torvalds@osdl.org>
-To: Peter Chubb
-cc: linux-kernel@vger.kernel.org
-Subject: Re: Linux GPL and binary module exception clause?
-Message-ID: <Pine.LNX.4.58.0312050853200.9125@home.osdl.org>
-
-On Fri, 5 Dec 2003, Peter Chubb wrote:
->
-> As I understand it, SCO is/was claiming that JFS and XFS are derived
-> works of the UNIX source base, because they were developed to match
-> the internal interfaces of UNIX, and with knowledge of the internals
-> of UNIX -- and they hold the copyrights of and are the licensor of UNIX.
-
-Yes, and I'm not claiming anything like that.
-
-I claim that a "binary linux kernel module" is a derived work of the
-kernel, and thus has to come with sources.
-
-But if you use those same sources (and _you_ wrote them) they do not
-contain any Linux code, they are _clearly_ not derived from Linux, and you
-can license and use your own code any way you want.
-
-You just can't make a binary module for Linux, and claim that that module
-isn't derived from the kernel. Because it generally is - the binary
-module not only included header files, but more importantly it clearly is
-_not_ a standalone work any more. So even if you made your own prototypes
-and tried hard to avoid kernel headers, it would _still_ be connected and
-dependent on the kernel.
-
-And note that I'm very much talking about just the _binary_. Your source
-code is still very much yours, and you have the right to distribute it
-separately any which way you want. You wrote it, you own the copyrights to
-it, and it is an independent work.
-
-But when you distribute it in a way that is CLEARLY tied to the GPL'd
-kernel (and a binary module is just one such clear tie - a "patch" to
-build it or otherwise tie it to the kernel is also such a tie, even if you
-distribute it as source under some other license), you're BY DEFINITION
-not an independent work any more.
-
-(But exactly because I'm not a black-and-white person, I reserve the right
-to make a balanced decision on any particular case. I have several times
-felt that the module author had a perfectly valid argument for why the
-"default assumption" of being derived wasn't the case. That's why things
-like the AFS module were accepted - but not liked - in the first place).
-
-This is why SCO's arguments are specious. IBM wrote their code, retained
-their copyrights to their code AND THEY SEVERED THE CONNECTION TO SCO'S
-CODE (and, arguably the connections didn't even exist in the first place,
-since apparently things like JFS were written for OS/2 as well, and the
-Linux port was based on that one - but that's a separate argument and
-independent of my point).
-
-See the definition of "derivative" in USC 17.1.101:
-
- A "derivative work" is a work based upon one or more preexisting
- works, such as a translation, musical arrangement, dramatization,
- fictionalization, motion picture version, sound recording, art
- reproduction, abridgment, condensation, or any other form in which
- a work may be recast, transformed, or adapted. A work consisting
- of editorial revisions, annotations, elaborations, or other
- modifications which, as a whole, represent an original work of
- authorship, is a "derivative work".
-
-And a binary module is an "elaboration" on the kernel. Sorry, but that is
-how it IS.
-
-In short: your code is yours. The code you write is automatically
-copyrighted by YOU, and as such you have the right to license and use it
-any way you want (well, modulo _other_ laws, of course - in the US your
-license can't be racist, for example, but that has nothing to do with
-copyright laws, and would fall under a totally different legal framework).
-
-But when you use that code to create an "elaboration" to the kernel, that
-makes it a derived work, and you cannot distribute it except as laid out
-by the GPL. A binary module is one such case, but even just a source patch
-is _also_ one such case. The lines you added are yours, but when you
-distribute it as an elaboration, you are bound by the restriction on
-derivative works.
-
-Or you had better have some other strong argument why it isn't. Which has
-been my point all along.
-
- Linus
-
-
-Date: Wed, 10 Dec 2003 09:10:18 -0800 (PST)
-From: Linus Torvalds <torvalds@osdl.org>
-To: Larry McVoy
-Subject: Re: Linux GPL and binary module exception clause?
-
-On Wed, 10 Dec 2003, Larry McVoy wrote:
->
-> Which is? How is it that you can spend a page of text saying a judge doesn't
-> care about technicalities and then base the rest of your argument on the
-> distinction between a "plugin" and a "kernel module"?
-
-I'll stop arguing, since you obviously do not get it.
-
-I explained the technicalities to _you_, and you are a technical person.
-
-But if you want to explain something to a judge, you get a real lawyer,
-and you make sure that the lawyer tries to explain the issue in _non_
-technical terms. Because, quite frankly, the judge is not going to buy a
-technical discussion he or she doesn't understand.
-
-Just as an example, how do you explain to a judge how much code the Linux
-kernel contains? Do you say "it's 6 million lines of C code and header
-files and documentation, for a total of about 175MB of data"?
-
-Yeah, maybe you'd _mention_ that, but to actually _illustrate_ the point
-you'd say that if you printed it out, it would be a solid stack of papers
-100 feet high. And you'd compare it to the height of the court building
-you're in, or something. Maybe you'd print out _one_ file, bind it as a
-book, and wave it around as one out of 15,000 files.
-
-But when _you_ ask me about how big the kernel is, I'd say "5 million
-lines". See the difference? It would be silly for me to tell you how many
-feet of paper the kernel would print out to, because we don't have those
-kinds of associations.
-
-Similarly, if you want to explain the notion of a kernel module, you'd
-compare it to maybe an extra chapter in a book. You'd make an analogy to
-something that never _ever_ mentions "linking".
-
-Just imagine: distributing a compiled binary-only kernel module that can
-be loaded into the kernel is not like distributing a new book: it's more
-like distributing a extra chapter to a book that somebody else wrote, that
-uses all the same characters and the plot, but more importantly it
-literally can only be read _together_ with the original work. It doesn't
-stand alone.
-
-In short, your honour, this extra chapter without any meaning on its own
-is a derived work of the book.
-
-In contrast, maybe you can re-write your code and distribute it as a
-short-story, which can be run on its own, and maybe the author has been
-influenced by another book, but the short-story could be bound AS IS, and
-a recipient would find it useful even without that other book. In that
-case, the short story is not a derived work - it's only inspired.
-
-Notice? This is actually _exactly_ what I've been arguing all along,
-except I've been arguing with a technical audience, so I've been using
-technical examples and terminology. But my argument is that just the fact
-that somebody compiled the code for Linux into a binary module that is
-useless without a particular version of the kernel DOES MAKE IT A DERIVED
-WORK.
-
-But also note how it's only the BINARY MODULE that is a derived work. Your
-source code is _not_ necessarily a derived work, and if you compile it for
-another operating system, I'd clearly not complain.
-
-This is the "stand-alone short story" vs "extra chapter without meaning
-outside the book" argument. See? One is a work in its own right, the other
-isn't.
-
- Linus
-
-
-Please read the FAQ at http://www.tux.org/lkml/
-Date: Thu, 4 Dec 2003 22:43:42 -0800 (PST)
-From: Linus Torvalds <torvalds@osdl.org>
-To: David Schwartz
-cc: linux-kernel@vger.kernel.org
-Subject: RE: Linux GPL and binary module exception clause?
-
-On Thu, 4 Dec 2003, David Schwartz wrote:
->
-> Yes, but they will cite the prohibition against *creating* derived
-> works.
-
-So?
-
-The same prohibition exists with the GPL. You are not allowed to create
-and distribute a derived work unless it is GPL'd.
-
-I don't see what you are arguing against. It is very clear: a kernel
-module is a derived work of the kernel by default. End of story.
-
-You can then try to prove (through development history etc) that there
-would be major reasons why it's not really derived. But your argument
-seems to be that _nothing_ is derived, which is clearly totally false, as
-you yourself admit when you replace "kernel" with "Harry Potter".
-
- Linus
-
-Date: Wed, 3 Dec 2003 16:00:21 -0800 (PST)
-From: Linus Torvalds <torvalds@osdl.org>
-To: Kendall Bennet
-cc: linux-kernel@vger.kernel.org
-Subject: Re: Linux GPL and binary module exception clause?
-
-On Wed, 3 Dec 2003, Kendall Bennett wrote:
->
-> I have heard many people reference the fact that the although the Linux
-> Kernel is under the GNU GPL license, that the code is licensed with an
-> exception clause that says binary loadable modules do not have to be
-> under the GPL.
-
-Nope. No such exception exists.
-
-There's a clarification that user-space programs that use the standard
-system call interfaces aren't considered derived works, but even that
-isn't an "exception" - it's just a statement of a border of what is
-clearly considered a "derived work". User programs are _clearly_ not
-derived works of the kernel, and as such whatever the kernel license is
-just doesn't matter.
-
-And in fact, when it comes to modules, the GPL issue is exactly the same.
-The kernel _is_ GPL. No ifs, buts and maybe's about it. As a result,
-anything that is a derived work has to be GPL'd. It's that simple.
-
-Now, the "derived work" issue in copyright law is the only thing that
-leads to any gray areas. There are areas that are not gray at all: user
-space is clearly not a derived work, while kernel patches clearly _are_
-derived works.
-
-But one gray area in particular is something like a driver that was
-originally written for another operating system (ie clearly not a derived
-work of Linux in origin). At exactly what point does it become a derived
-work of the kernel (and thus fall under the GPL)?
-
-THAT is a gray area, and _that_ is the area where I personally believe
-that some modules may be considered to not be derived works simply because
-they weren't designed for Linux and don't depend on any special Linux
-behaviour.
-
-Basically:
- - anything that was written with Linux in mind (whether it then _also_
- works on other operating systems or not) is clearly partially a derived
- work.
- - anything that has knowledge of and plays with fundamental internal
- Linux behaviour is clearly a derived work. If you need to muck around
- with core code, you're derived, no question about it.
-
-Historically, there's been things like the original Andrew filesystem
-module: a standard filesystem that really wasn't written for Linux in the
-first place, and just implements a UNIX filesystem. Is that derived just
-because it got ported to Linux that had a reasonably similar VFS interface
-to what other UNIXes did? Personally, I didn't feel that I could make that
-judgment call. Maybe it was, maybe it wasn't, but it clearly is a gray
-area.
-
-Personally, I think that case wasn't a derived work, and I was willing to
-tell the AFS guys so.
-
-Does that mean that any kernel module is automatically not a derived work?
-HELL NO! It has nothing to do with modules per se, except that non-modules
-clearly are derived works (if they are so central to the kenrel that you
-can't load them as a module, they are clearly derived works just by virtue
-of being very intimate - and because the GPL expressly mentions linking).
-
-So being a module is not a sign of not being a derived work. It's just
-one sign that _maybe_ it might have other arguments for why it isn't
-derived.
-
- Linus
-
-
-Date: Wed, 3 Dec 2003 16:23:33 -0800 (PST)
-From: Linus Torvalds <torvalds@osdl.org>
-To: Kendall Bennett
-cc: linux-kernel@vger.kernel.org
-Subject: Re: Linux GPL and binary module exception clause?
-
-
-On Wed, 3 Dec 2003, Linus Torvalds wrote:
->
-> So being a module is not a sign of not being a derived work. It's just
-> one sign that _maybe_ it might have other arguments for why it isn't
-> derived.
-
-Side note: historically, the Linux kernel module interfaces were really
-quite weak, and only exported a few tens of entry-points, and really
-mostly effectively only allowed character and block device drivers with
-standard interfaces, and loadable filesystems.
-
-So historically, the fact that you could load a module using nothing but
-these standard interfaces tended to be a much stronger argument for not
-being very tightly coupled with the kernel.
-
-That has changed, and the kernel module interfaces we have today are MUCH
-more extensive than they were back in '95 or so. These days modules are
-used for pretty much everything, including stuff that is very much
-"internal kernel" stuff and as a result the kind of historic "implied
-barrier" part of modules really has weakened, and as a result there is not
-avery strong argument for being an independent work from just the fact
-that you're a module.
-
-Similarly, historically there was a much stronger argument for things like
-AFS and some of the binary drivers (long forgotten now) for having been
-developed totally independently of Linux: they literally were developed
-before Linux even existed, by people who had zero knowledge of Linux. That
-tends to strengthen the argument that they clearly aren't derived.
-
-In contrast, these days it would be hard to argue that a new driver or
-filesystem was developed without any thought of Linux. I think the NVidia
-people can probably reasonably honestly say that the code they ported had
-_no_ Linux origin. But quite frankly, I'd be less inclined to believe that
-for some other projects out there..
-
- Linus
-
-
-
-
-Date: Thu, 17 Oct 2002 10:08:19 -0700 (PDT)
-From: Linus Torvalds <torvalds@transmeta.com>
-To: Christoph Hellwig
-Cc: <linux-kernel@vger.kernel.org>
-Subject: Re: [PATCH] make LSM register functions GPLonly exports
-In-Reply-To: <20021017175403.A32516@infradead.org>
-Message-ID: <Pine.LNX.4.44.0210170958340.6739-100000@home.transmeta.com>
-
-Note that if this fight ends up being a major issue, I'm just going to
-remove LSM and let the security vendors do their own thing. So far
-
- - I have not seen a lot of actual usage of the hooks
- - seen a number of people who still worry that the hooks degrade
- performance in critical areas
- - the worry that people use it for non-GPL'd modules is apparently real,
- considering Crispin's reply.
-
-I will re-iterate my stance on the GPL and kernel modules:
-
- There is NOTHING in the kernel license that allows modules to be
- non-GPL'd.
-
- The _only_ thing that allows for non-GPL modules is copyright law, and
- in particular the "derived work" issue. A vendor who distributes non-GPL
- modules is _not_ protected by the module interface per se, and should
- feel very confident that they can show in a court of law that the code
- is not derived.
-
- The module interface has NEVER been documented or meant to be a GPL
- barrier. The COPYING clearly states that the system call layer is such a
- barrier, so if you do your work in user land you're not in any way
- beholden to the GPL. The module interfaces are not system calls: there
- are system calls used to _install_ them, but the actual interfaces are
- not.
-
- The original binary-only modules were for things that were pre-existing
- works of code, ie drivers and filesystems ported from other operating
- systems, which thus could clearly be argued to not be derived works, and
- the original limited export table also acted somewhat as a barrier to
- show a level of distance.
-
-In short, Crispin: I'm going to apply the patch, and if you as a copyright
-holder of that file disagree, I will simply remove all of he LSM code from
-the kernel. I think it's very clear that a LSM module is a derived work,
-and thus copyright law and the GPL are not in any way unclear about it.
-
-If people think they can avoid the GPL by using function pointers, they
-are WRONG. And they have always been wrong.
-
- Linus
-
-------------------------------------------------------------------------
-Date: Fri, 19 Oct 2001 13:16:45 -0700 (PDT)
-From: Linus Torvalds <torvalds@transmeta.com>
-To: Barnes
-Subject: Re: GPL, Richard Stallman, and the Linux kernel
-
-[ This is not, of course, a legal document, but if you want to forward it
- to anybody else, feel free to do so. And if you want to argue legal
- points with me or point somehting out, I'm always interested. To a
- point ;-]
-
-On Fri, 19 Oct 2001, Barnes wrote:
->
-> I've been exchanging e-mail with Richard Stallman for a couple of
-> weeks about the finer points of the GPL.
-
-I feel your pain.
-
-> I've have spent time pouring through mailing list archives, usenet,
-> and web search engines to find out what's already been covered about
-> your statement of allowing dynamically loaded kernel modules with
-> proprietary code to co-exist with the Linux kernel. So far I've
-> been unable to find anything beyond vague statements attributed to
-> you. If these issues are addressed somewhere already, please refer
-> me.
-
-Well, it really boils down to the equivalent of "_all_ derived modules
-have to be GPL'd". An external module doesn't really change the GPL in
-that respect.
-
-There are (mainly historical) examples of UNIX device drivers and some
-UNIX filesystems that were pre-existing pieces of work, and which had
-fairly well-defined and clear interfaces and that I personally could not
-really consider any kind of "derived work" at all, and that were thus
-acceptable. The clearest example of this is probably the AFS (the Andrew
-Filesystem), but there have been various device drivers ported from SCO
-too.
-
-> Issue #1
-> ========
-> Currently the GPL version 2 license is the only license covering the
-> Linux kernel. I cannot find any alternative license explaining the
-> loadable kernel module exception which makes your position difficult
-> to legally analyze.
->
-> There is a note at the top of www.kernel.org/pub/linux/kernel/COPYING,
-> but that states "user programs" which would clearly not apply to
-> kernel modules.
->
-> Could you clarify in writing what the exception precisely states?
-
-Well, there really is no exception. However, copyright law obviously
-hinges on the definition of "derived work", and as such anything can
-always be argued on that point.
-
-I personally consider anything a "derived work" that needs special hooks
-in the kernel to function with Linux (ie it is _not_ acceptable to make a
-small piece of GPL-code as a hook for the larger piece), as that obviously
-implies that the bigger module needs "help" from the main kernel.
-
-Similarly, I consider anything that has intimate knowledge about kernel
-internals to be a derived work.
-
-What is left in the gray area tends to be clearly separate modules: code
-that had a life outside Linux from the beginning, and that do something
-self-containted that doesn't really have any impact on the rest of the
-kernel. A device driver that was originally written for something else,
-and that doesn't need any but the standard UNIX read/write kind of
-interfaces, for example.
-
-> Issue #2
-> ========
-> I've found statements attributed to you that you think only 10% of
-> the code in the current kernel was written by you. By not being the
-> sole copyright holder of the Linux kernel, a stated exception to
-> the GPL seems invalid unless all kernel copyright holders agreed on
-> this exception. How does the exception cover GPL'd kernel code not
-> written by you? Has everyone contributing to the kernel forfeited
-> their copyright to you or agreed with the exception?
-
-Well, see above about the lack of exception, and about the fundamental
-gray area in _any_ copyright issue. The "derived work" issue is obviously
-a gray area, and I know lawyers don't like them. Crazy people (even
-judges) have, as we know, claimed that even obvious spoofs of a work that
-contain nothing of the original work itself, can be ruled to be "derived".
-
-I don't hold views that extreme, but at the same time I do consider a
-module written for Linux and using kernel infrastructures to get its work
-done, even if not actually copying any existing Linux code, to be a
-derived work by default. You'd have to have a strong case to _not_
-consider your code a derived work..
-
-> Issue #3
-> ========
-> This issue is related to issue #1. Exactly what is covered by the
-> exception? For example, all code shipped with the Linux kernel
-> archive and typically installed under /usr/src/linux, all code under
-> /usr/src/linux except /usr/src/linux/drivers, or just the code in
-> the /usr/src/linux/kernel directory?
-
-See above, and I think you'll see my point.
-
-The "user program" exception is not an exception at all, for example, it's
-just a more clearly stated limitation on the "derived work" issue. If you
-use standard UNIX system calls (with accepted Linux extensions), your
-program obviously doesn't "derive" from the kernel itself.
-
-Whenever you link into the kernel, either directly or through a module,
-the case is just a _lot_ more muddy. But as stated, by default it's
-obviously derived - the very fact that you _need_ to do something as
-fundamental as linking against the kernel very much argues that your
-module is not a stand-alone thing, regardless of where the module source
-code itself has come from.
-
-> Issue #4
-> ========
-> This last issue is not so much a issue for the Linux kernel
-> exception, but a request for comment.
->
-> Richard and I both agree that a "plug-in" and a "dynamically
-> loaded kernel module" are effectively the same under the GPL.
-
-Agreed.
-
-The Linux kernel modules had (a long time ago), a more limited interface,
-and not very many functions were actually exported. So five or six years
-ago, we could believably claim that "if you only use these N interfaces
-that are exported from the standard kernel, you've kind of implicitly
-proven that you do not need the kernel infrastructure".
-
-That was never really documented either (more of a guideline for me and
-others when we looked at the "derived work" issue), and as modules were
-more-and-more used not for external stuff, but just for dynamic loading of
-standard linux modules that were distributed as part of the kernel anyway,
-the "limited interfaces" argument is no longer a very good guideline for
-"derived work".
-
-So these days, we export many internal interfaces, not because we don't
-think that they would "taint" the linker, but simply because it's useful
-to do dynamic run-time loading of modules even with standard kernel
-modules that _are_ supposed to know a lot about kernel internals, and are
-obviously "derived works"..
-
-> However we disagree that a plug-in for a GPL'd program falls
-> under the GPL as asserted in the GPL FAQ found in the answer:
-> http://www.gnu.org/licenses/gpl-faq.html#GPLAndPlugins.
-
-I think you really just disagree on what is derived, and what is not.
-Richard is very extreme: _anything_ that links is derived, regardless of
-what the arguments against it are. I'm less extreme, and I bet you're even
-less so (at least you would like to argue so for your company).
-
-> My assertion is that plug-ins are written to an interface, not a
-> program. Since interfaces are not GPL'd, a plug-in cannot be GPL'd
-> until the plug-in and program are placed together and run. That is
-> done by the end user, not the plug-in creator.
-
-I agree, but also disrespectfully disagree ;)
-
-It's an issue of what a "plug-in" is - is it a way for the program to
-internally load more modules as it needs them, or is it _meant_ to be a
-public, published interface.
-
-For example, the "system call" interface could be considered a "plug-in
-interface", and running a user mode program under Linux could easily be
-construed as running a "plug-in" for the Linux kernel. No?
-
-And there, I obviously absolutely agree with you 100%: the interface is
-published, and it's _meant_ for external and independent users. It's an
-interface that we go to great lengths to preserve as well as we can, and
-it's an interface that is designed to be independent of kernel versions.
-
-But maybe somebody wrote his program with the intention to dynamically
-load "actors" as they were needed, as a way to maintain a good modularity,
-and to try to keep the problem spaces well-defined. In that case, the
-"plug-in" may technically follow all the same rules as the system call
-interface, even though the author doesn't intend it that way.
-
-So I think it's to a large degree a matter of intent, but it could
-arguably also be considered a matter of stability and documentation (ie
-"require recompilation of the plug-in between version changes" would tend
-to imply that it's an internal interface, while "documented binary
-compatibility across many releases" implies a more stable external
-interface, and less of a derived work)
-
-Does that make sense to you?
-
-> I asked Richard to comment on several scenarios involving plug-ins
-> explain whether or not they were in violation of the GPL. So far he
-> as only addressed one and has effectively admitted a hole. This is
-> the one I asked that he's responded to:
-> [A] non-GPL'd plug-in writer writes a plug-in for a non-GPL'd
-> program. Another author writes a GPL'd program making the
-> first author's plug-ins compatible with his program. Are now
-> the plug-in author's plug-ins now retroactively required to be
-> GPL'd?
->
-> His response:
-> No, because the plug-in was not written to extend this program.
->
-> I find it suspicious that whether or not the GPL would apply to the
-> plug-in depends on the mindset of the author.
-
-The above makes no sense if you think of it as a "plug in" issue, but it
-makes sense if you think of it as a "derived work" issue, along with
-taking "intent" into account.
-
-I know lawyers tend to not like the notion of "intent", because it brings
-in another whole range of gray areas, but it's obviously a legal reality.
-
-Ok, enough blathering from me. I'd just like to finish off with a few
-comments, just to clarify my personal stand:
-
- - I'm obviously not the only copyright holder of Linux, and I did so on
- purpose for several reasons. One reason is just because I hate the
- paperwork and other cr*p that goes along with copyright assignments.
-
- Another is that I don't much like copyright assignments at all: the
- author is the author, and he may be bound by my requirement for GPL,
- but that doesn't mean that he should give his copyright to me.
-
- A third reason, and the most relevant reason here, is that I want
- people to _know_ that I cannot control the sources. I can write you a
- note to say that "for use XXX, I do not consider module YYY to be a
- derived work of my kernel", but that would not really matter that much.
- Any other Linux copyright holder might still sue you.
-
- This third reason is what makes people who otherwise might not trust me
- realize that I cannot screw people over. I am bound by the same
- agreement that I require of everybody else, and the only special status
- I really have is a totally non-legal issue: people trust me.
-
- (Yes, I realize that I probably would end up having more legal status
- than most, even apart from the fact that I still am the largest single
- copyright holder, if only because of appearances)
-
- - I don't really care about copyright law itself. What I care about is my
- own morals. Whether I'd ever sue somebody or not (and quite frankly,
- it's the last thing I ever want to do - if I never end up talking to
- lawyers in a professional context, I'll be perfectly happy. No
- disrespect intended) will be entirely up to whether I consider what
- people do to me "moral" or not. Which is why intent matters to me a
- lot - both the intent of the person/corporation doign the infringement,
- _and_ the intent of me and others in issues like the module export
- interface.
-
- Another way of putting this: I don't care about "legal loopholes" and
- word-wrangling.
-
- - Finally: I don't trust the FSF. I like the GPL a lot - although not
- necessarily as a legal piece of paper, but more as an intent. Which
- explains why, if you've looked at the Linux COPYING file, you may have
- noticed the explicit comment about "only _this_ particular version of
- the GPL covers the kernel by default".
-
- That's because I agree with the GPL as-is, but I do not agree with the
- FSF on many other matters. I don't like software patents much, for
- example, but I do not want the code I write to be used as a weapon
- against companies that have them. The FSF has long been discussing and
- is drafting the "next generation" GPL, and they generally suggest that
- people using the GPL should say "v2 or at your choice any later
- version".
-
- Linux doesn't do that. The Linux kernel is v2 ONLY, apart from a few
- files where the author put in the FSF extension (and see above about
- copyright assignments why I would never remove such an extension).
-
-The "v2 only" issue might change some day, but only after all documented
-copyright holders agree on it, and only after we've seen what the FSF
-suggests. From what I've seen so far from the FSF drafts, we're not likely
-to change our v2-only stance, but there might of course be legal reasons
-why we'd have to do something like it (ie somebody challenging the GPLv2
-in court, and part of it to be found unenforceable or similar would
-obviously mean that we'd have to reconsider the license).
-
- Linus
-
-PS. Historically, binary-only modules have not worked well under Linux,
-quite regardless of any copyright issues. The kernel just develops too
-quickly for binary modules to work well, and nobody really supports them.
-Companies like Red Hat etc tend to refuse to have anything to do with
-binary modules, because if something goes wrong there is nothing they can
-do about it. So I just wanted to let you know that the _legal_ issue is
-just the beginning. Even though you probably don't personally care ;)
-
-
+++ /dev/null
-Kernel Low-Level PCMCIA Interface Documentation
-^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
-John G Dorsey <john+@cs.cmu.edu>
-Updated: 30 June, 2000
-
-
-Note: this interface has not been finalized!
-See also: http://www.cs.cmu.edu/~wearable/software/pcmcia-arm.html
-
-
-Introduction
-
-Early versions of PCMCIA Card Services for StrongARM were designed to
-permit a single socket driver to run on a variety of SA-1100 boards by
-using a userland configuration process. During the conversion to the 2.3
-kernel series, all of the configuration has moved into sub-drivers in the
-kernel proper (see linux/drivers/pcmcia/sa1100*). This document describes
-the low-level interface between those sub-drivers and the sa1100 socket
-driver module.
-
-Presently, there are six operations which must be provided by the
-board-specific code. Only functions whose implementation is likely to
-differ across board designs are required at this level. Some examples
-include:
-
- - configuring card detect lines to generate interrupts
- - sensing the legal voltage levels for inserted cards
- - asserting the reset signal for a card
-
-Functions which are assumed to be the same across all designs are
-performed within the generic socket driver itself. Some examples of these
-kinds of operations include:
-
- - configuring memory access times based on the core clock frequency
- - reads/writes on memory, byte swizzling, ...
-
-The current implementation allows the specific per-board set of low-level
-operations to be determined at run time. For each specific board, the
-following structure should be filled in:
-
- struct pcmcia_low_level {
- int (*init)(struct pcmcia_init *);
- int (*shutdown)(void);
- int (*socket_state)(struct pcmcia_state_array *);
- int (*get_irq_info)(struct pcmcia_irq_info *);
- int (*configure_socket)(const struct pcmcia_configure *);
- };
-
-The component functions are described in detail below. Using the
-machine_is_*() tests, the pointer `pcmcia_low_level' should be assigned to
-the location of the table for your board.
-
-
-0. init(struct pcmcia_init *init)
-
-This operation has three responsibilities:
-
- - perform any board-specific initialization tasks
- - associate the given handler with any interrupt-generating signals
- such as card detection, or battery voltage detection
- - set up any necessary edge detection for card ready signals
-
-Argument passing for this operation is implemented by the following
-structure:
-
- struct pcmcia_init {
- void (*handler)(int irq, void *dev, struct pt_regs *regs);
- struct pcmcia_maps *maps;
- };
-
-Here, `handler' is provided by the socket driver, and `maps' must be
-modified if the default mapping isn't appropriate. This operation should
-return one of two values:
-
- - the highest-numbered socket available, plus one
- - a negative number, indicating an error in configuration
-
-Note that the former case is _not_ the same as "the number of sockets
-available." In particular, if your design uses SA-1100 slot "one" but
-not slot "zero," you MUST report "2" to the socket driver.
-
-
-1. shutdown(void)
-
-This operation takes no arguments, and will be called during cleanup for
-the socket driver module. Any state associated with the socket controller,
-including allocated data structures, reserved IRQs, etc. should be
-released in this routine.
-
-The return value for this operation is not examined.
-
-
-2. socket_state(struct pcmcia_state_array *state_array)
-
-This operation will be invoked from the interrupt handler which was set up
-in the earlier call to init(). Note, however, that it should not include
-any side effects which would be inappropriate if the operation were to
-occur when no interrupt is pending. (An extra invocation of this operation
-currently takes place to initialize state in the socket driver.)
-
-Argument passing for this operation is handled by a structure which
-contains an array of the following type:
-
- struct pcmcia_state {
- unsigned detect: 1,
- ready: 1,
- bvd1: 1,
- bvd2: 1,
- wrprot: 1,
- vs_3v: 1,
- vs_Xv: 1;
- };
-
-Upon return from the operation, a struct pcmcia_state should be filled in
-for each socket available in the hardware. For every array element (up to
-`size' in the struct pcmcia_state_saarray) which does not correspond to an
-available socket, zero the element bits. (This includes element [0] if
-socket zero is not used.)
-
-Regardless of how the various signals are routed to the SA-1100, the bits
-in struct pcmcia_state always have the following semantics:
-
- detect - 1 if a card is fully inserted, 0 otherwise
- ready - 1 if the card ready signal is asserted, 0 otherwise
- bvd1 - the value of the Battery Voltage Detect 1 signal
- bvd2 - the value of the Battery Voltage Detect 2 signal
- wrprot - 1 if the card is write-protected, 0 otherwise
- vs_3v - 1 if the card must be operated at 3.3V, 0 otherwise
- vs_Xv - 1 if the card must be operated at X.XV, 0 otherwise
-
-A note about the BVD signals: if your board does not make both lines
-directly observable to the processor, just return reasonable values. The
-standard interpretation of the BVD signals is:
-
- BVD1 BVD2
-
- 0 x battery is dead
- 1 0 battery warning
- 1 1 battery ok
-
-Regarding the voltage sense flags (vs_3v, vs_Xv), these bits should be set
-based on a sampling of the Voltage Sense pins, if available. The standard
-interpretation of the VS signals (for a "low-voltage" socket) is:
-
- VS1 VS2
-
- 0 0 X.XV, else 3.3V, else none
- 0 1 3.3V, else none
- 1 0 X.XV, else none
- 1 1 5V, else none
-
-More information about the BVD and VS conventions is available in chapter
-5 of "PCMCIA System Architecture," 2nd ed., by Don Anderson.
-
-This operation should return 1 if an IRQ is actually pending for the
-socket controller, 0 if no IRQ is pending (but no error condition exists,
-such as an undersized state array), or -1 on any error.
-
-
-3. get_irq_info(struct pcmcia_irq_info *info)
-
-This operation obtains the IRQ assignment which is legal for the given
-socket. An argument of the following type is passed:
-
- struct pcmcia_irq_info {
- unsigned int sock;
- unsigned int irq ;
- };
-
-The `sock' field contains the socket index being queried. The `irq' field
-should contain the IRQ number corresponding to the card ready signal from
-the device.
-
-This operation should return 0 on success, or -1 on any error.
-
-
-4. configure_socket(const struct pcmcia_configure *configure)
-
-This operation allows the caller to apply power to the socket, issue a
-reset, or enable various outputs. The argument is of the following type:
-
- struct pcmcia_configure {
- unsigned sock: 8,
- vcc: 8,
- vpp: 8,
- output: 1,
- speaker: 1,
- reset: 1;
- };
-
-The `sock' field contains the index of the socket to be configured. The
-`vcc' and `vpp' fields contain the voltages to be applied for Vcc and Vpp,
-respectively, in units of 0.1V. (Note that vpp==120 indicates that
-programming voltage should be applied.)
-
-The two output enables, `output' and `speaker', refer to the card data
-signal enable and the card speaker enable, respectively. The `reset' bit,
-when set, indicates that the card reset should be asserted.
-
-This operation should return 0 on success, or -1 on any error.
-
-
-Board-Specific Notes
-
-The following information is known about various SA-11x0 board designs
-which may be used as reference while adding support to the kernel.
-
-
-Carnegie Mellon Itsy/Cue (http://www.cs.cmu.edu/~wearable/itsy/)
-
- Itsy Chip Select 3 (CS3) Interface
- ("ITSY MEMORY/PCMCIA ADD-ON BOARD with BATTERY and CHARGER CIRCUITRY,"
- memo dated 5-20-99, from Tim Manns to Richard Martin, et. al)
-
- Read:
- ABVD2 (SS)D0 A slot, Battery Voltage Detect
- ABVD1 (SS)D1
- AVSS2 (SS)D2 A slot, Voltage Sense
- AVSS1 (SS)D3
- GND (SS)D4
- GND (SS)D5
- GND (SS)D6
- GND (SS)D7
-
- BBVD2 (SS)D8 B slot, Battery Voltage Detect
- BBVD1 (SS)D9
- BVSS2 (SS)D10 B slot, Voltage Sense
- BVSS1 (SS)D11
- GND (SS)D12
- GND (SS)D13
- GND (SS)D14
- GND (SS)D15
-
- Write:
- (SS)D0 A_VPP_VCC LTC1472 VPPEN1
- (SS)D1 A_VPP_PGM LTC1472 VPPEN0
- (SS)D2 A_VCC_3 LTC1472 VCCEN0
- (SS)D3 A_VCC_5 LTC1472 VCCEN1
- (SS)D4 RESET (A SLOT)
- (SS)D5 GND
- (SS)D6 GND
- (SS)D7 GND
-
- (SS)D8 B_VPP_VCC LTC1472 VPPEN1
- (SS)D9 B_VPP_PGM LTC1472 VPPEN0
- (SS)D10 B_VCC_3 LTC1472 VCCEN0
- (SS)D11 B_VCC_5 LTC1472 VCCEN1
- (SS)D12 RESET (B SLOT)
- (SS)D13 GND
- (SS)D14 GND
- (SS)D15 GND
-
- GPIO pin assignments are as follows: (from schematics)
-
- GPIO 10 Slot 0 Card Detect
- GPIO 11 Slot 1 Card Detect
- GPIO 12 Slot 0 Ready/Interrupt
- GPIO 13 Slot 1 Ready/Interrupt
-
-
-
-Intel SA-1100 Multimedia Board (http://developer.intel.com/design/strong/)
-
- CPLD Registers
- SA-1100 Multimedia Development Board with Companion SA-1101 Development
- Board User's Guide, p.4-42
-
- This SA-1100/1101 development package uses only one GPIO pin (24) to
- signal changes in card status, and requires software to inspect a
- PCMCIA status register to determine the source.
-
- Read: (PCMCIA Power Sense Register - 0x19400000)
- S0VS1 0 Slot 0 voltage sense
- S0VS2 1
- S0BVD1 2 Slot 0 battery voltage sense
- S0BVD2 3
- S1VS1 4 Slot 1 voltage sense
- S1VS2 5
- S1BVD1 6 Slot 1 battery voltage sense
- S1BVD2 7
-
- Read/Write: (PCMCIA Power Control Register - 0x19400002)
- S0VPP0 0 Slot 0 Vpp
- S0VPP1 1
- S0VCC0 2 Slot 0 Vcc
- S0VCC1 3
- S1VPP0 4 Slot 1 Vpp
- S1VPP1 5
- S1VCC0 6 Slot 1 Vcc
- S1VCC1 7
-
- Read: (PCMCIA Status Register - 0x19400004)
- S0CD1 0 Slot 0 Card Detect 1
- S0RDY 1 Slot 0 Ready/Interrupt
- S0STSCHG 2 Slot 0 Status Change
- S0Reset 3 Slot 0 Reset (RW)
- S1CD1 4 Slot 1 Card Detect 1
- S1RDY 5 Slot 1 Ready/Interrupt
- S1STSCHG 6 Slot 1 Status Change
- S1Reset 7 Slot 1 Reset (RW)
-
-
-
-Intel SA-1100 Evaluation Platform (http://developer.intel.com/design/strong/)
-
- Brutus I/O Pins and Chipselect Register
- pcmcia-brutus.c, by Ivo Clarysse
- (What's the official reference for this info?)
-
- This SA-1100 development board uses more GPIO pins than say, the Itsy
- or the SA-1100/1101 multimedia package. The pin assignments are as
- follows:
-
- GPIO 2 Slot 0 Battery Voltage Detect 1
- GPIO 3 Slot 0 Ready/Interrupt
- GPIO 4 Slot 0 Card Detect
- GPIO 5 Slot 1 Battery Voltage Detect 1
- GPIO 6 Slot 1 Ready/Interrupt
- GPIO 7 Slot 1 Card Detect
-
- Like the Itsy, Brutus uses a chipselect register in static memory
- bank 3 for the other signals, such as voltage sense or reset:
-
- Read:
- P0_VS1 8 Slot 0 Voltage Sense
- P0_VS2 9
- P0_STSCHG 10 Slot 0 Status Change
- P1_VS1 12 Slot 1 Voltage Sense
- P1_VS2 13
- P1_STSCHG 14 Slot 1 Status Change
-
- Read/Write:
- P0_ 16 Slot 0 MAX1600EAI control line
- P0_ 17 Slot 0 MAX1600EAI control line
- P0_ 18 Slot 0 MAX1600EAI control line
- P0_ 19 Slot 0 MAX1600EAI control line
- P0_ 20 Slot 0 12V
- P0_ 21 Slot 0 Vpp to Vcc (CONFIRM?)
- P0_ 22 Slot 0 enable fan-out drivers & xcvrs
- P0_SW_RST 23 Slot 0 Reset
- P1_ 24 Slot 1 MAX1600EAI control line
- P1_ 25 Slot 1 MAX1600EAI control line
- P1_ 26 Slot 1 MAX1600EAI control line
- P1_ 27 Slot 1 MAX1600EAI control line
- P1_ 28 Slot 1 12V
- P1_ 29 Slot 1 Vpp to Vcc (CONFIRM?)
- P1_ 30 Slot 1 enable fan-out drivers & xcvrs
- P1_SW_RST 31 Slot 1 Reset
-
- For each slot, the bits labelled "MAX1600EAI" should (apparently)
- be written with the value 0101 for Vcc 3.3V, and 1001 for Vcc 5V.
-
-
-
-Intel SA-1110 Development Platform (http://developer.intel.com/design/strong/)
-
- GPIO Pin Descriptions and Board Control Register
- SA-1110 Microprocessor Development Board User's Guide, p.4-7, 4-10
-
- The Assabet board contains only a single Compact Flash slot,
- attached to slot 1 on the SA-1110. Card detect, ready, and BVD
- signals are routed through GPIO, with power and reset placed in a
- control register. Note that the CF bus must be enabled before use.
-
- GPIO 21 Slot 1 Compact Flash interrupt
- GPIO 22 Slot 1 card detect (CD1 NOR CD2)
- GPIO 24 Slot 1 Battery Voltage Detect 2
- GPIO 25 Slot 1 Battery Voltage Detect 1
-
- Write-only: (Board Control Register - 0x12000000)
- CF_PWR 0 CF bus power (3.3V)
- CF_RST 1 CF reset
- CF_Bus_On 7 CF bus enable
-
+++ /dev/null
-
-Board Overview
------------------------------
-
-This is an beta release of the Xscale Linux port to the ADI 80200EVB
-evaluation board.
-
-The 80200EVB is an evaluation platform for ADI Engineering's high-performance
-80200FCC chipset for the Intel 80200 XScale CPU. The 80200FCC is an open
-source FPGA based system that contains a PCI unit and a high performance
-memory controller.
-
-In addition to the 80200FCC, the board also contains a 16C550 UART, and 4MB
-of flash.
-
-The board is still under development and currently only the UART is functional
-as the PCI bits have not been programmed into the FPGA.
-
-For more information on the board, see http://www.adiengineering.com
-
-Port Status
------------------------------
-
-Supported:
-
-- Onboard UART (Polled operation only)
-- Cache/TLB locking on 80200 CPU
-
-TODO:
-
-- PCI when hardware supports it
-
-Building the Kernel
------------------------------
-change Linux makefile
-make adi_evb_config
-make oldconfig
-make zImage
-
-Loading Linux
------------------------------
-
-Before you can use Linux on the ADI board, you need to grab the following:
-
-ADI 80200EVB Monitor:
- ftp://source.mvista.com/pub/xscale/ADI_EVB/monitor.srec
-
-ADI JFFS2 Image:
- ftp://source.mvista.com/pub/xscale/ADI_EVB/adi.jffs2
-
-Once you've got the Cygnus prompt, type in the following command:
-
- load
-
-On another terminal window:
-
- cat monitor.srec > /dev/ttyS0
-
-(replace ttyS0 with the serial port you are using)
-
-Once completed, just type 'go' at the cygmon prompt and you should see:
-
- MontaVista IQ80310 Monitor Version 0.1
- monitor>
-
-Type 'b 115200' at the prompt and change your terminal speed to 115200
-
-The first thing to do is to upload and burn the jffs2 filesystem image
-onto the boards 4MB of flash:
-
- monitor> u c1000000
- Uploading file at 0xc1000000
- Now send file with ymodem
-
-Do as the monitor says and transfer the file adi.jffs2. Once complete,
-the following will copy the jffs2 image to location 0x80000 in the flash.
-
- monitor> f 8000 c1000000 200000
- Erasing sector 0x00080000
- Writing sector 0x00080000 with data at 0xC1000000
- Erasing sector 0x000A0000
- Writing sector 0x000A0000 with data at 0xC1020000
- Erasing sector 0x000C0000
- ...
-
-Now use the same command as above to upload your zImage to location c1000000.
-When you've done that, type 'j c1000000' to run Linux. Login as
-root and you're all set to go.
-
-Misc Notes
------------------------------
-
-The current version of the HW does not have an onboard timer, so the 80200
-PMU is not available for general use as it is being used for a timer source.
-
-By default, the MTD driver reserves the first 512K for bootloaders and
-the remaining 3.5MB for the filesystem. You can edit drivers/mtd/map/adi_evb.c
-to change this as needed for your application.
-
-Contributors
------------------------------
-
-Thanks to ADI Engineering for providing the hardware for development
-
-Deepak Saxena <dsaxena@mvista.com> - Initial port
-
------------------------------
-Enjoy. If you have any problem please contact Deepak Saxena
-dsaxena@mvista.com
-
+++ /dev/null
-
-Board Overview
------------------------------
-
-The Cyclone IQ80310 board is an evaluation platform for Intel's 80200 Xscale
-CPU and 80312 Intelligent I/O chipset (collectively called IOP310 chipset).
-
-The 80312 contains dual PCI hoses (called the ATUs), a PCI-to-PCI bridge,
-three DMA channels (1 on secondary PCI, one on primary PCI ), I2C, I2O
-messaging unit, XOR unit for RAID operations, a bus performance monitoring
-unit, and a memory controller with ECC features.
-
-For more information on the board, see http://developer.intel.com/iio
-
-Port Status
------------------------------
-
-Supported:
-
-- MTD/JFFS/JFFS2
-- NFS root
-- RAMDISK root
-- 2ndary PCI slots
-- Onboard ethernet
-- Serial ports (ttyS0/S1)
-- Cache/TLB locking on 80200 CPU
-- Performance monitoring unit on 80200 CPU
-- 80200 Performance Monitoring Unit
-- Acting as a system controller on Cyclone 80303BP PCI backplane
-- DMA engines (EXPERIMENTAL)
-- 80312 Bus Performance Monitor (EXPERIMENTAL)
-- Application Accelerator Unit (XOR engine for RAID) (EXPERIMENTAL)
-- Messaging Unit (EXPERIMENTAL)
-
-TODO:
-- I2C
-
-Building the Kernel
------------------------------
-make iq80310_config
-make oldconfig
-make zImage
-
-This will build an image setup for BOOTP/NFS root support. To change this,
-just run make menuconfig and disable nfs root or add a "root=" option.
-
-Preparing the Hardware
------------------------------
-
-This document assumes you're using a Rev D or newer board running
-Redboot as the bootloader. Note that the version of RedBoot provided
-with the boards has a major issue and you need to replace it with the
-latest RedBoot. You can grab the source from the ECOS CVS or you can
-get a prebuilt image and burn it in using FRU at:
-
- ftp://source.mvista.com/pub/xscale/iq80310/redboot.bin
-
-Make sure you do an 'fis init' command once you boot with the new
-RedBoot image.
-
-
-
-Downloading Linux
------------------------------
-
-Assuming you have your development system setup to act as a bootp/dhcp
-server and running tftp:
-
- RedBoot> load -r -b 0xa1008000 /tftpboot/zImage.xs
- Raw file loaded 0xa1008000-0xa1094bd8
-
-If you're not using dhcp/tftp, you can use y-modem instead:
-
- RedBoot> load -r -b 0xa1008000 -m y
-
-Note that on Rev D. of the board, tftp does not work due to intermittent
-interrupt issues, so you need to download using ymodem.
-
-Once the download is completed:
-
- RedBoot> go 0xa1008000
-
-Root Devices
------------------------------
-
-A kernel is not useful without a root filesystem, and you have several
-choices with this board: NFS root, RAMDISK, or JFFS/JFFS2. For development
-purposes, it is suggested that you use NFS root for easy access to various
-tools. Once you're ready to deploy, probably want to utilize JFFS/JFFS2 on
-the flash device.
-
-MTD on the IQ80310
------------------------------
-
-Linux on the IQ80310 supports RedBoot FIS paritioning if it is enabled.
-Out of the box, once you've done 'fis init' on RedBoot, you will get
-the following partitioning scheme:
-
- root@192.168.0.14:~# cat /proc/mtd
- dev: size erasesize name
- mtd0: 00040000 00020000 "RedBoot"
- mtd1: 00040000 00020000 "RedBoot[backup]"
- mtd2: 0075f000 00020000 "unallocated space"
- mtd3: 00001000 00020000 "RedBoot config"
- mtd4: 00020000 00020000 "FIS directory"
-
-To create an FIS directory, you need to use the fis command in RedBoot.
-As an example, you can burn the kernel into the flash once it's downloaded:
-
- RedBoot> fis create -b 0xa1008000 -l 0x8CBAC -r 0xa1008000 -f 0x80000 kernel
- ... Erase from 0x00080000-0x00120000: .....
- ... Program from 0xa1008000-0xa1094bac at 0x00080000: .....
- ... Unlock from 0x007e0000-0x00800000: .
- ... Erase from 0x007e0000-0x00800000: .
- ... Program from 0xa1fdf000-0xa1fff000 at 0x007e0000: .
- ... Lock from 0x007e0000-0x00800000: .
-
- RedBoot> fis list
- Name FLASH addr Mem addr Length Entry point
- RedBoot 0x00000000 0x00000000 0x00040000 0x00000000
- RedBoot[backup] 0x00040000 0x00040000 0x00040000 0x00000000
- RedBoot config 0x007DF000 0x007DF000 0x00001000 0x00000000
- FIS directory 0x007E0000 0x007E0000 0x00020000 0x00000000
- kernel 0x00080000 0xA1008000 0x000A0000 0x00000000
-
-This leads to the following Linux MTD setup:
-
- mtroot@192.168.0.14:~# cat /proc/mtd
- dev: size erasesize name
- mtd0: 00040000 00020000 "RedBoot"
- mtd1: 00040000 00020000 "RedBoot[backup]"
- mtd2: 000a0000 00020000 "kernel"
- mtd3: 006bf000 00020000 "unallocated space"
- mtd4: 00001000 00020000 "RedBoot config"
- mtd5: 00020000 00020000 "FIS directory"
-
-Note that there is not a 1:1 mapping to the number of RedBoot paritions to
-MTD partitions as unused space also gets allocated into MTD partitions.
-
-As an aside, the -r option when creating the Kernel entry allows you to
-simply do an 'fis load kernel' to copy the image from flash into memory.
-You can then do an 'fis go 0xa1008000' to start Linux.
-
-If you choose to use static partitioning instead of the RedBoot partioning:
-
- /dev/mtd0 0x00000000 - 0x0007ffff: Boot Monitor (512k)
- /dev/mtd1 0x00080000 - 0x0011ffff: Kernel Image (640K)
- /dev/mtd2 0x00120000 - 0x0071ffff: File System (6M)
- /dev/mtd3 0x00720000 - 0x00800000: RedBoot Reserved (896K)
-
-To use a JFFS1/2 root FS, you need to donwload the JFFS image using either
-tftp or ymodem, and then copy it to flash:
-
- RedBoot> load -r -b 0xa1000000 /tftpboot/jffs.img
- Raw file loaded 0xa1000000-0xa1600000
- RedBoot> fis create -b 0xa1000000 -l 0x600000 -f 0x120000 jffs
- ... Erase from 0x00120000-0x00720000: ..................................
- ... Program from 0xa1000000-0xa1600000 at 0x00120000: ..................
- ......................
- ... Unlock from 0x007e0000-0x00800000: .
- ... Erase from 0x007e0000-0x00800000: .
- ... Program from 0xa1fdf000-0xa1fff000 at 0x007e0000: .
- ... Lock from 0x007e0000-0x00800000: .
- RedBoot> fis list
- Name FLASH addr Mem addr Length Entry point
- RedBoot 0x00000000 0x00000000 0x00040000 0x00000000
- RedBoot[backup] 0x00040000 0x00040000 0x00040000 0x00000000
- RedBoot config 0x007DF000 0x007DF000 0x00001000 0x00000000
- FIS directory 0x007E0000 0x007E0000 0x00020000 0x00000000
- kernel 0x00080000 0xA1008000 0x000A0000 0xA1008000
- jffs 0x00120000 0x00120000 0x00600000 0x00000000
-
-This looks like this in Linux:
-
- root@192.168.0.14:~# cat /proc/mtd
- dev: size erasesize name
- mtd0: 00040000 00020000 "RedBoot"
- mtd1: 00040000 00020000 "RedBoot[backup]"
- mtd2: 000a0000 00020000 "kernel"
- mtd3: 00600000 00020000 "jffs"
- mtd4: 000bf000 00020000 "unallocated space"
- mtd5: 00001000 00020000 "RedBoot config"
- mtd6: 00020000 00020000 "FIS directory"
-
-You need to boot the kernel once and watch the boot messages to see how the
-JFFS RedBoot partition mapped into the MTD partition scheme.
-
-You can grab a pre-built JFFS image to use as a root file system at:
-
- ftp://source.mvista.com/pub/xscale/iq80310/jffs.img
-
-For detailed info on using MTD and creating a JFFS image go to:
-
- http://www.linux-mtd.infradead.org.
-
-For details on using RedBoot's FIS commands, type 'fis help' or consult
-your RedBoot manual.
-
-Contributors
------------------------------
-
-Thanks to Intel Corporation for providing the hardware.
-
-John Clark <jclark@teamasa.com> - Initial discovery of RedBoot issues
-Dave Jiang <dave.jiang@intel.com> - IRQ demux fixes, AAU, DMA, MU
-Nicolas Pitre <nico@cam.org> - Initial port, cleanup, debugging
-Matt Porter <mporter@mvista.com> - PCI subsystem development, debugging
-Tim Sanders <tsanders@sanders.org> - Initial PCI code
-Mark Salter <msalter@redhat.com> - RedBoot fixes
-Deepak Saxena <dsaxena@mvista.com> - Cleanup, debug, cache lock, PMU
-
------------------------------
-Enjoy.
-
-If you have any problems please contact Deepak Saxena <dsaxena@mvista.com>
-
-A few notes from rmk
------------------------------
-
-These are notes of my initial experience getting the IQ80310 Rev D up and
-running. In total, it has taken many hours to work out what's going on...
-The version of redboot used is:
-
- RedBoot(tm) bootstrap and debug environment, version UNKNOWN - built 14:58:21, Aug 15 2001
-
-
-1. I've had a corrupted download of the redboot.bin file from Montavista's
- FTP site. It would be a good idea if there were md5sums, sum or gpg
- signatures available to ensure the integrity of the downloaded files.
- The result of this was an apparantly 100% dead card.
-
-2. RedBoot Intel EtherExpress Pro 100 driver seems to be very unstable -
- I've had it take out the whole of a 100mbit network for several minutes.
- The Hub indiates ZERO activity, despite machines attempting to communicate.
- Further to this, while tftping the kernel, the transfer will stall regularly,
- and might even drop the link LED.
-
-3. There appears to be a bug in the Intel Documentation Pack that comes with
- the IQ80310 board. Serial port 1, which is the socket next to the LEDs
- is address 0xfe810000, not 0xfe800000.
-
- Note that RedBoot uses either serial port 1 OR serial port 2, so if you
- have your console connected to the wrong port, you'll see redboot messages
- but not kernel boot messages.
-
-4. Trying to use fconfig to setup a boot script fails - it hangs when trying
- to erase the flash.
+++ /dev/null
-
-Board Overview
------------------------------
-
-The Worcester IQ80321 board is an evaluation platform for Intel's 80321 Xscale
-CPU (sometimes called IOP321 chipset).
-
-The 80321 contains a single PCI hose (called the ATUs), a PCI-to-PCI bridge,
-two DMA channels, I2C, I2O messaging unit, XOR unit for RAID operations,
-a bus performance monitoring unit, and a memory controller with ECC features.
-
-For more information on the board, see http://developer.intel.com/iio
-
-Port Status
------------------------------
-
-Supported:
-
-- MTD/JFFS/JFFS2 root
-- NFS root
-- RAMDISK root
-- Serial port (ttyS0)
-- Cache/TLB locking on 80321 CPU
-- Performance monitoring unit on 80321 CPU
-
-TODO:
-
-- DMA engines
-- I2C
-- 80321 Bus Performance Monitor
-- Application Accelerator Unit (XOR engine for RAID)
-- I2O Messaging Unit
-- I2C unit
-- SSP
-
-Building the Kernel
------------------------------
-make iq80321_config
-make oldconfig
-make zImage
-
-This will build an image setup for BOOTP/NFS root support. To change this,
-just run make menuconfig and disable nfs root or add a "root=" option.
-
-Preparing the Hardware
------------------------------
-
-Make sure you do an 'fis init' command once you boot with the new
-RedBoot image.
-
-Downloading Linux
------------------------------
-
-Assuming you have your development system setup to act as a bootp/dhcp
-server and running tftp:
-
-NOTE: The 80321 board uses a different default memory map than the 80310.
-
- RedBoot> load -r -b 0x01008000 -m y
-
-Once the download is completed:
-
- RedBoot> go 0x01008000
-
-There is a version of RedBoot floating around that has DHCP support, but
-I've never been able to cleanly transfer a kernel image and have it run.
-
-Root Devices
------------------------------
-
-A kernel is not useful without a root filesystem, and you have several
-choices with this board: NFS root, RAMDISK, or JFFS/JFFS2. For development
-purposes, it is suggested that you use NFS root for easy access to various
-tools. Once you're ready to deploy, probably want to utilize JFFS/JFFS2 on
-the flash device.
-
-MTD on the IQ80321
------------------------------
-
-Linux on the IQ80321 supports RedBoot FIS paritioning if it is enabled.
-Out of the box, once you've done 'fis init' on RedBoot, you will get
-the following partitioning scheme:
-
- root@192.168.0.14:~# cat /proc/mtd
- dev: size erasesize name
- mtd0: 00040000 00020000 "RedBoot"
- mtd1: 00040000 00020000 "RedBoot[backup]"
- mtd2: 0075f000 00020000 "unallocated space"
- mtd3: 00001000 00020000 "RedBoot config"
- mtd4: 00020000 00020000 "FIS directory"
-
-To create an FIS directory, you need to use the fis command in RedBoot.
-As an example, you can burn the kernel into the flash once it's downloaded:
-
- RedBoot> fis create -b 0x01008000 -l 0x8CBAC -r 0x01008000 -f 0x80000 kernel
- ... Erase from 0x00080000-0x00120000: .....
- ... Program from 0x01008000-0x01094bac at 0x00080000: .....
- ... Unlock from 0x007e0000-0x00800000: .
- ... Erase from 0x007e0000-0x00800000: .
- ... Program from 0x01fdf000-0x01fff000 at 0x007e0000: .
- ... Lock from 0x007e0000-0x00800000: .
-
- RedBoot> fis list
- Name FLASH addr Mem addr Length Entry point
- RedBoot 0x00000000 0x00000000 0x00040000 0x00000000
- RedBoot[backup] 0x00040000 0x00040000 0x00040000 0x00000000
- RedBoot config 0x007DF000 0x007DF000 0x00001000 0x00000000
- FIS directory 0x007E0000 0x007E0000 0x00020000 0x00000000
- kernel 0x00080000 0x01008000 0x000A0000 0x00000000
-
-This leads to the following Linux MTD setup:
-
- mtroot@192.168.0.14:~# cat /proc/mtd
- dev: size erasesize name
- mtd0: 00040000 00020000 "RedBoot"
- mtd1: 00040000 00020000 "RedBoot[backup]"
- mtd2: 000a0000 00020000 "kernel"
- mtd3: 006bf000 00020000 "unallocated space"
- mtd4: 00001000 00020000 "RedBoot config"
- mtd5: 00020000 00020000 "FIS directory"
-
-Note that there is not a 1:1 mapping to the number of RedBoot paritions to
-MTD partitions as unused space also gets allocated into MTD partitions.
-
-As an aside, the -r option when creating the Kernel entry allows you to
-simply do an 'fis load kernel' to copy the image from flash into memory.
-You can then do an 'fis go 0x01008000' to start Linux.
-
-If you choose to use static partitioning instead of the RedBoot partioning:
-
- /dev/mtd0 0x00000000 - 0x0007ffff: Boot Monitor (512k)
- /dev/mtd1 0x00080000 - 0x0011ffff: Kernel Image (640K)
- /dev/mtd2 0x00120000 - 0x0071ffff: File System (6M)
- /dev/mtd3 0x00720000 - 0x00800000: RedBoot Reserved (896K)
-
-To use a JFFS1/2 root FS, you need to donwload the JFFS image using either
-tftp or ymodem, and then copy it to flash:
-
- RedBoot> load -r -b 0x01000000 /tftpboot/jffs.img
- Raw file loaded 0x01000000-0x01600000
- RedBoot> fis create -b 0x01000000 -l 0x600000 -f 0x120000 jffs
- ... Erase from 0x00120000-0x00720000: ..................................
- ... Program from 0x01000000-0x01600000 at 0x00120000: ..................
- ......................
- ... Unlock from 0x007e0000-0x00800000: .
- ... Erase from 0x007e0000-0x00800000: .
- ... Program from 0x01fdf000-0x01fff000 at 0x007e0000: .
- ... Lock from 0x007e0000-0x00800000: .
- RedBoot> fis list
- Name FLASH addr Mem addr Length Entry point
- RedBoot 0x00000000 0x00000000 0x00040000 0x00000000
- RedBoot[backup] 0x00040000 0x00040000 0x00040000 0x00000000
- RedBoot config 0x007DF000 0x007DF000 0x00001000 0x00000000
- FIS directory 0x007E0000 0x007E0000 0x00020000 0x00000000
- kernel 0x00080000 0x01008000 0x000A0000 0x01008000
- jffs 0x00120000 0x00120000 0x00600000 0x00000000
-
-This looks like this in Linux:
-
- root@192.168.0.14:~# cat /proc/mtd
- dev: size erasesize name
- mtd0: 00040000 00020000 "RedBoot"
- mtd1: 00040000 00020000 "RedBoot[backup]"
- mtd2: 000a0000 00020000 "kernel"
- mtd3: 00600000 00020000 "jffs"
- mtd4: 000bf000 00020000 "unallocated space"
- mtd5: 00001000 00020000 "RedBoot config"
- mtd6: 00020000 00020000 "FIS directory"
-
-You need to boot the kernel once and watch the boot messages to see how the
-JFFS RedBoot partition mapped into the MTD partition scheme.
-
-You can grab a pre-built JFFS image to use as a root file system at:
-
- ftp://source.mvista.com/pub/xscale/iq80310/jffs.img
-
-For detailed info on using MTD and creating a JFFS image go to:
-
- http://www.linux-mtd.infradead.org.
-
-For details on using RedBoot's FIS commands, type 'fis help' or consult
-your RedBoot manual.
-
-BUGS and ISSUES
------------------------------
-
-* As shipped from Intel, pre-production boards have two issues:
-
-- The on board ethernet is disabled S8E1-2 is off. You will need to turn it on.
-
-- The PCIXCAPs are configured for a 100Mhz clock, but the clock selected is
- actually only 66Mhz. This causes the wrong PPL multiplier to be used and the
- board only runs at 400Mhz instead of 600Mhz. The way to observe this is to
- use a independent clock to time a "sleep 10" command from the prompt. If it
- takes 15 seconds instead of 10, you are running at 400Mhz.
-
-- The experimental IOP310 drivers for the AAU, DMA, etc. are not supported yet.
-
-Contributors
------------------------------
-The port to the IQ80321 was performed by:
-
-Rory Bolt <rorybolt@pacbell.net> - Initial port, debugging.
-
-This port was based on the IQ80310 port with the following contributors:
-
-Nicolas Pitre <nico@cam.org> - Initial port, cleanup, debugging
-Matt Porter <mporter@mvista.com> - PCI subsystem development, debugging
-Tim Sanders <tsanders@sanders.org> - Initial PCI code
-Deepak Saxena <dsaxena@mvista.com> - Cleanup, debug, cache lock, PMU
-
-The port is currently maintained by Deepak Saxena <dsaxena@mvista.com>
-
------------------------------
-Enjoy.
+++ /dev/null
-Support functions for the Intel 80310 AAU
-===========================================
-
-Dave Jiang <dave.jiang@intel.com>
-Last updated: 09/18/2001
-
-The Intel 80312 companion chip in the 80310 chipset contains an AAU. The
-AAU is capable of processing up to 8 data block sources and perform XOR
-operations on them. This unit is typically used to accelerated XOR
-operations utilized by RAID storage device drivers such as RAID 5. This
-API is designed to provide a set of functions to take adventage of the
-AAU. The AAU can also be used to transfer data blocks and used as a memory
-copier. The AAU transfer the memory faster than the operation performed by
-using CPU copy therefore it is recommended to use the AAU for memory copy.
-
-------------------
-int aau_request(u32 *aau_context, const char *device_id);
-This function allows the user the acquire the control of the the AAU. The
-function will return a context of AAU to the user and allocate
-an interrupt for the AAU. The user must pass the context as a parameter to
-various AAU API calls.
-
-int aau_queue_buffer(u32 aau_context, aau_head_t *listhead);
-This function starts the AAU operation. The user must create a SGL
-header with a SGL attached. The format is presented below. The SGL is
-built from kernel memory.
-
-/* hardware descriptor */
-typedef struct _aau_desc
-{
- u32 NDA; /* next descriptor address [READONLY] */
- u32 SAR[AAU_SAR_GROUP]; /* src addrs */
- u32 DAR; /* destination addr */
- u32 BC; /* byte count */
- u32 DC; /* descriptor control */
- u32 SARE[AAU_SAR_GROUP]; /* extended src addrs */
-} aau_desc_t;
-
-/* user SGL format */
-typedef struct _aau_sgl
-{
- aau_desc_t aau_desc; /* AAU HW Desc */
- u32 status; /* status of SGL [READONLY] */
- struct _aau_sgl *next; /* pointer to next SG [READONLY] */
- void *dest; /* destination addr */
- void *src[AAU_SAR_GROUP]; /* source addr[4] */
- void *ext_src[AAU_SAR_GROUP]; /* ext src addr[4] */
- u32 total_src; /* total number of source */
-} aau_sgl_t;
-
-/* header for user SGL */
-typedef struct _aau_head
-{
- u32 total; /* total descriptors allocated */
- u32 status; /* SGL status */
- aau_sgl_t *list; /* ptr to head of list */
- aau_callback_t callback; /* callback func ptr */
-} aau_head_t;
-
-
-The function will call aau_start() and start the AAU after it queues
-the SGL to the processing queue. When the function will either
-a. Sleep on the wait queue aau->wait_q if no callback has been provided, or
-b. Continue and then call the provided callback function when DMA interrupt
- has been triggered.
-
-int aau_suspend(u32 aau_context);
-Stops/Suspends the AAU operation
-
-int aau_free(u32 aau_context);
-Frees the ownership of AAU. Called when no longer need AAU service.
-
-aau_sgl_t * aau_get_buffer(u32 aau_context, int num_buf);
-This function obtains an AAU SGL for the user. User must specify the number
-of descriptors to be allocated in the chain that is returned.
-
-void aau_return_buffer(u32 aau_context, aau_sgl_t *list);
-This function returns all SGL back to the API after user is done.
-
-int aau_memcpy(void *dest, void *src, u32 size);
-This function is a short cut for user to do memory copy utilizing the AAU for
-better large block memory copy vs using the CPU. This is similar to using
-typical memcpy() call.
-
-* User is responsible for the source address(es) and the destination address.
- The source and destination should all be cached memory.
-
-
-
-void aau_test()
-{
- u32 aau;
- char dev_id[] = "AAU";
- int size = 2;
- int err = 0;
- aau_head_t *head;
- aau_sgl_t *list;
- u32 i;
- u32 result = 0;
- void *src, *dest;
-
- printk("Starting AAU test\n");
- if((err = aau_request(&aau, dev_id))<0)
- {
- printk("test - AAU request failed: %d\n", err);
- return;
- }
- else
- {
- printk("test - AAU request successful\n");
- }
-
- head = kmalloc(sizeof(aau_head_t), GFP_KERNEL);
- head->total = size;
- head->status = 0;
- head->callback = NULL;
-
- list = aau_get_buffer(aau, size);
- if(!list)
- {
- printk("Can't get buffers\n");
- return;
- }
- head->list = list;
-
- src = kmalloc(1024, GFP_KERNEL);
- dest = kmalloc(1024, GFP_KERNEL);
-
- while(list)
- {
- list->status = 0;
- list->aau_desc->SAR[0] = (u32)src;
- list->aau_desc->DAR = (u32)dest;
- list->aau_desc->BC = 1024;
-
- /* see iop310-aau.h for more DCR commands */
- list->aau_desc->DC = AAU_DCR_WRITE | AAU_DCR_BLKCTRL_1_DF;
- if(!list->next)
- {
- list->aau_desc->DC = AAU_DCR_IE;
- break;
- }
- list = list->next;
- }
-
- printk("test- Queueing buffer for AAU operation\n");
- err = aau_queue_buffer(aau, head);
- if(err >= 0)
- {
- printk("AAU Queue Buffer is done...\n");
- }
- else
- {
- printk("AAU Queue Buffer failed...: %d\n", err);
- }
-
-
-
-#if 1
- printk("freeing the AAU\n");
- aau_return_buffer(aau, head->list);
- aau_free(aau);
- kfree(src);
- kfree(dest);
- kfree((void *)head);
-#endif
-}
-
-All Disclaimers apply. Use this at your own discretion. Neither Intel nor I
-will be responsible if anything goes wrong. =)
-
-
-TODO
-____
-* Testing
-* Do zero-size AAU transfer/channel at init
- so all we have to do is chainining
-
+++ /dev/null
-Support functions forthe Intel 80310 DMA channels
-==================================================
-
-Dave Jiang <dave.jiang@intel.com>
-Last updated: 09/18/2001
-
-The Intel 80310 XScale chipset provides 3 DMA channels via the 80312 I/O
-companion chip. Two of them resides on the primary PCI bus and one on the
-secondary PCI bus.
-
-The DMA API provided is not compatible with the generic interface in the
-ARM tree unfortunately due to how the 80312 DMACs work. Hopefully some time
-in the near future a software interface can be done to bridge the differences.
-The DMA API has been modeled after Nicholas Pitre's SA11x0 DMA API therefore
-they will look somewhat similar.
-
-
-80310 DMA API
--------------
-
-int dma_request(dmach_t channel, const char *device_id);
-
-This function will attempt to allocate the channel depending on what the
-user requests:
-
-IOP310_DMA_P0: PCI Primary 1
-IOP310_DMA_P1: PCI Primary 2
-IOP310_DMA_S0: PCI Secondary 1
-/*EOF*/
-
-Once the user allocates the DMA channel it is owned until released. Although
-other users can also use the same DMA channel, but no new resources will be
-allocated. The function will return the allocated channel number if successful.
-
-int dma_queue_buffer(dmach_t channel, dma_sghead_t *listhead);
-
-The user will construct a SGL in the form of below:
-/*
- * Scattered Gather DMA List for user
- */
-typedef struct _dma_desc
-{
- u32 NDAR; /* next descriptor adress [READONLY] */
- u32 PDAR; /* PCI address */
- u32 PUADR; /* upper PCI address */
- u32 LADR; /* local address */
- u32 BC; /* byte count */
- u32 DC; /* descriptor control */
-} dma_desc_t;
-
-typedef struct _dma_sgl
-{
- dma_desc_t dma_desc; /* DMA descriptor */
- u32 status; /* descriptor status [READONLY] */
- u32 data; /* user defined data */
- struct _dma_sgl *next; /* next descriptor [READONLY] */
-} dma_sgl_t;
-
-/* dma sgl head */
-typedef struct _dma_head
-{
- u32 total; /* total elements in SGL */
- u32 status; /* status of sgl */
- u32 mode; /* read or write mode */
- dma_sgl_t *list; /* pointer to list */
- dma_callback_t callback; /* callback function */
-} dma_head_t;
-
-
-The user shall allocate user SGL elements by calling the function:
-dma_get_buffer(). This function will give the user an SGL element. The user
-is responsible for creating the SGL head however. The user is also
-responsible for allocating the memory for DMA data. The following code segment
-shows how a DMA operation can be performed:
-
-#include <asm/arch/iop310-dma.h>
-
-void dma_test(void)
-{
- char dev_id[] = "Primary 0";
- dma_head_t *sgl_head = NULL;
- dma_sgl_t *sgl = NULL;
- int err = 0;
- int channel = -1;
- u32 *test_ptr = 0;
- DECLARE_WAIT_QUEUE_HEAD(wait_q);
-
-
- *(IOP310_ATUCR) = (IOP310_ATUCR_PRIM_OUT_ENAB |
- IOP310_ATUCR_DIR_ADDR_ENAB);
-
- channel = dma_request(IOP310_DMA_P0, dev_id);
-
- sgl_head = (dma_head_t *)kmalloc(sizeof(dma_head_t), GFP_KERNEL);
- sgl_head->callback = NULL; /* no callback created */
- sgl_head->total = 2; /* allocating 2 DMA descriptors */
- sgl_head->mode = (DMA_MOD_WRITE);
- sgl_head->status = 0;
-
- /* now we get the two descriptors */
- sgl = dma_get_buffer(channel, 2);
-
- /* we set the header to point to the list we allocated */
- sgl_head->list = sgl;
-
- /* allocate 1k of DMA data */
- sgl->data = (u32)kmalloc(1024, GFP_KERNEL);
-
- /* Local address is physical */
- sgl->dma_desc.LADR = (u32)virt_to_phys(sgl->data);
-
- /* write to arbitrary location over the PCI bus */
- sgl->dma_desc.PDAR = 0x00600000;
- sgl->dma_desc.PUADR = 0;
- sgl->dma_desc.BC = 1024;
-
- /* set write & invalidate PCI command */
- sgl->dma_desc.DC = DMA_DCR_PCI_MWI;
- sgl->status = 0;
-
- /* set a pattern */
- memset(sgl->data, 0xFF, 1024);
-
- /* User's responsibility to keep buffers cached coherent */
- cpu_dcache_clean(sgl->data, sgl->data + 1024);
-
- sgl = sgl->next;
-
- sgl->data = (u32)kmalloc(1024, GFP_KERNEL);
- sgl->dma_desc.LADR = (u32)virt_to_phys(sgl->data);
- sgl->dma_desc.PDAR = 0x00610000;
- sgl->dma_desc.PUADR = 0;
- sgl->dma_desc.BC = 1024;
-
- /* second descriptor has interrupt flag enabled */
- sgl->dma_desc.DC = (DMA_DCR_PCI_MWI | DMA_DCR_IE);
-
- /* must set end of chain flag */
- sgl->status = DMA_END_CHAIN; /* DO NOT FORGET THIS!!!! */
-
- memset(sgl->data, 0x0f, 1024);
- /* User's responsibility to keep buffers cached coherent */
- cpu_dcache_clean(sgl->data, sgl->data + 1024);
-
- /* queuing the buffer, this function will sleep since no callback */
- err = dma_queue_buffer(channel, sgl_head);
-
- /* now we are woken from DMA complete */
-
- /* do data operations here */
-
- /* free DMA data if necessary */
-
- /* return the descriptors */
- dma_return_buffer(channel, sgl_head->list);
-
- /* free the DMA */
- dma_free(channel);
-
- kfree((void *)sgl_head);
-}
-
-
-dma_sgl_t * dma_get_buffer(dmach_t channel, int buf_num);
-
-This call allocates DMA descriptors for the user.
-
-
-void dma_return_buffer(dmach_t channel, dma_sgl_t *list);
-
-This call returns the allocated descriptors back to the API.
-
-
-int dma_suspend(dmach_t channel);
-
-This call suspends any DMA transfer on the given channel.
-
-
-
-int dma_resume(dmach_t channel);
-
-This call resumes a DMA transfer which would have been stopped through
-dma_suspend().
-
-
-int dma_flush_all(dmach_t channel);
-
-This completely flushes all queued buffers and on-going DMA transfers on a
-given channel. This is called when DMA channel errors have occurred.
-
-
-void dma_free(dmach_t channel);
-
-This clears all activities on a given DMA channel and releases it for future
-requests.
-
-
-
-Buffer Allocation
------------------
-It is the user's responsibility to allocate, free, and keep track of the
-allocated DMA data memory. Upon calling dma_queue_buffer() the user must
-relinquish the control of the buffers to the kernel and not change the
-state of the buffers that it has passed to the kernel. The user will regain
-the control of the buffers when it has been woken up by the bottom half of
-the DMA interrupt handler. The user can allocate cached buffers or non-cached
-via pci_alloc_consistent(). It is the user's responsibility to ensure that
-the data is cache coherent.
-
-*Reminder*
-The user is responsble to ensure the ATU is setup properly for DMA transfers.
-
-All Disclaimers apply. Use this at your own discretion. Neither Intel nor I
-will be responsible ifanything goes wrong.
+++ /dev/null
-Support functions for the Intel 80310 MU
-===========================================
-
-Dave Jiang <dave.jiang@intel.com>
-Last updated: 10/11/2001
-
-The messaging unit of the IOP310 contains 4 components and is utilized for
-passing messages between the PCI agents on the primary bus and the Intel(R)
-80200 CPU. The four components are:
-Messaging Component
-Doorbell Component
-Circular Queues Component
-Index Registers Component
-
-Messaging Component:
-Contains 4 32bit registers, 2 in and 2 out. Writing to the registers assert
-interrupt on the PCI bus or to the 80200 depend on incoming or outgoing.
-
-int mu_msg_request(u32 *mu_context);
-Request the usage of Messaging Component. mu_context is written back by the
-API. The MU context is passed to other Messaging calls as a parameter.
-
-int mu_msg_set_callback(u32 mu_context, u8 reg, mu_msg_cb_t func);
-Setup the callback function for incoming messages. Callback can be setup for
-outbound 0, 1, or both outbound registers.
-
-int mu_msg_post(u32 mu_context, u32 val, u8 reg);
-Posting a message in the val parameter. The reg parameter denotes whether
-to use register 0, 1.
-
-int mu_msg_free(u32 mu_context, u8 mode);
-Free the usage of messaging component. mode can be specified soft or hard. In
-hardmode all resources are unallocated.
-
-Doorbell Component:
-The doorbell registers contains 1 inbound and 1 outbound. Depending on the bits
-being set different interrupts are asserted.
-
-int mu_db_request(u32 *mu_context);
-Request the usage of the doorbell register.
-
-int mu_db_set_callback(u32 mu_context, mu_db_cb_t func);
-Setting up the inbound callback.
-
-void mu_db_ring(u32 mu_context, u32 mask);
-Write to the outbound db register with mask.
-
-int mu_db_free(u32 mu_context);
-Free the usage of doorbell component.
-
-Circular Queues Component:
-The circular queue component has 4 circular queues. Inbound post, inbound free,
-outbound post, outbound free. These queues are used to pass messages.
-
-int mu_cq_request(u32 *mu_context, u32 q_size);
-Request the usage of the queue. See code comment header for q_size. It tells
-the API how big of queues to setup.
-
-int mu_cq_inbound_init(u32 mu_context, mfa_list_t *list, u32 size,
- mu_cq_cb_t func);
-Init inbound queues. The user must provide a list of free message frames to
-be put in inbound free queue and the callback function to handle the inbound
-messages.
-
-int mu_cq_enable(u32 mu_context);
-Enables the circular queues mechanism. Called once all the setup functions
-are called.
-
-u32 mu_cq_get_frame(u32 mu_context);
-Obtain the address of an outbound free frame for the user.
-
-int mu_cq_post_frame(u32 mu_context, u32 mfa);
-The user can post the frame once getting the frame and put information in the
-frame.
-
-int mu_cq_free(u32 mu_context);
-Free the usage of circular queues mechanism.
-
-Index Registers Component:
-The index register provides the mechanism to receive inbound messages.
-
-int mu_ir_request(u32 *mu_context);
-Request of Index Register component usage.
-
-int mu_ir_set_callback(u32 mu_context, mu_ir_cb_t callback);
-Setting up callback for inbound messages. The callback will receive the
-value of the register that IAR offsets to.
-
-int mu_ir_free(u32 mu_context);
-Free the usage of Index Registers component.
-
-void mu_set_irq_threshold(u32 mu_context, int thresh);
-Setup the IRQ threshold before relinquish processing in IRQ space. Default
-is set at 10 loops.
-
-
-*NOTE: Example of host driver that utilize the MU can be found in the Linux I2O
-driver. Specifically i2o_pci and some functions of i2o_core. The I2O driver
-only utilize the circular queues mechanism. The other 3 components are simple
-enough that they can be easily setup. The MU API provides no flow control for
-the messaging mechanism. Flow control of the messaging needs to be established
-by a higher layer of software on the IOP or the host driver.
-
-All Disclaimers apply. Use this at your own discretion. Neither Intel nor I
-will be responsible if anything goes wrong. =)
-
-
-TODO
-____
-
+++ /dev/null
-
-Intel's XScale Microarchitecture 80312 companion processor provides a
-Performance Monitoring Unit (PMON) that can be utilized to provide
-information that can be useful for fine tuning of code. This text
-file describes the API that's been developed for use by Linux kernel
-programmers. Note that to get the most usage out of the PMON,
-I highly reccomend getting the XScale reference manual from Intel[1]
-and looking at chapter 12.
-
-To use the PMON, you must #include <asm-arm/arch-iop310/pmon.h> in your
-source file.
-
-Since there's only one PMON, only one user can currently use the PMON
-at a given time. To claim the PMON for usage, call iop310_pmon_claim() which
-returns an identifier. When you are done using the PMON, call
-iop310_pmon_release() with the id you were given earlier.
-
-The PMON consists of 14 registers that can be used for performance measurements.
-By combining different statistics, you can derive complex performance metrics.
-
-To start the PMON, just call iop310_pmon_start(mode). Mode tells the PMON what
-statistics to capture and can each be one of:
-
- IOP310_PMU_MODE0
- Performance Monitoring Disabled
-
- IOP310_PMU_MODE1
- Primary PCI bus and internal agents (bridge, dma Ch0, dam Ch1, patu)
-
- IOP310_PMU_MODE2
- Secondary PCI bus and internal agents (bridge, dma Ch0, dam Ch1, patu)
-
- IOP310_PMU_MODE3
- Secondary PCI bus and internal agents (external masters 0..2 and Intel
- 80312 I/O companion chip)
-
- IOP310_PMU_MODE4
- Secondary PCI bus and internal agents (external masters 3..5 and Intel
- 80312 I/O companion chip)
-
- IOP310_PMU_MODE5
- Intel 80312 I/O companion chip internal bus, DMA Channels and Application
- Accelerator
-
- IOP310_PMU_MODE6
- Intel 80312 I/O companion chip internal bus, PATU, SATU and Intel 80200
- processor
-
- IOP310_PMU_MODE7
- Intel 80312 I/O companion chip internal bus, Primary PCI bus, Secondary
- PCI bus and Secondary PCI agents (external masters 0..5 & Intel 80312 I/O
- companion chip)
-
-To get the results back, call iop310_pmon_stop(&results) where results is
-defined as follows:
-
-typedef struct _iop310_pmon_result
-{
- u32 timestamp; /* Global Time Stamp Register */
- u32 timestamp_overflow; /* Time Stamp overflow count */
- u32 event_count[14]; /* Programmable Event Counter
- Registers 1-14 */
- u32 event_overflow[14]; /* Overflow counter for PECR1-14 */
-} iop310_pmon_res_t;
-
-
---
-This code is still under development, so please feel free to send patches,
-questions, comments, etc to me.
-
-Deepak Saxena <dsaxena@mvista.com>
+++ /dev/null
-
-Intel's XScale Microarchitecture provides support for locking of data
-and instructions into the appropriate caches. This file provides
-an overview of the API that has been developed to take advantage of this
-feature from kernel space. Note that there is NO support for user space
-cache locking.
-
-For example usage of this code, grab:
-
- ftp://source.mvista.com/pub/xscale/cache-test.c
-
-If you have any questions, comments, patches, etc, please contact me.
-
-Deepak Saxena <dsaxena@mvista.com>
-
-API DESCRIPTION
-
-
-I. Header File
-
- #include <asm/xscale-lock.h>
-
-II. Cache Capability Discovery
-
- SYNOPSIS
-
- int cache_query(u8 cache_type,
- struct cache_capabilities *pcache);
-
- struct cache_capabilities
- {
- u32 flags; /* Flags defining capabilities */
- u32 cache_size; /* Cache size in K (1024 bytes) */
- u32 max_lock; /* Maximum lockable region in K */
- }
-
- /*
- * Flags
- */
-
- /*
- * Bit 0: Cache lockability
- * Bits 1-31: Reserved for future use
- */
- #define CACHE_LOCKABLE 0x00000001 /* Cache can be locked */
-
- /*
- * Cache Types
- */
- #define ICACHE 0x00
- #define DCACHE 0x01
-
- DESCRIPTION
-
- This function fills out the pcache capability identifier for the
- requested cache. cache_type is either DCACHE or ICACHE. This
- function is not very useful at the moment as all XScale CPU's
- have the same size Cache, but is is provided for future XScale
- based processors that may have larger cache sizes.
-
- RETURN VALUE
-
- This function returns 0 if no error occurs, otherwise it returns
- a negative, errno compatible value.
-
- -EIO Unknown hardware error
-
-III. Cache Locking
-
- SYNOPSIS
-
- int cache_lock(void *addr, u32 len, u8 cache_type, const char *desc);
-
- DESCRIPTION
-
- This function locks a physically contigous portion of memory starting
- at the virtual address pointed to by addr into the cache referenced
- by cache_type.
-
- The address of the data/instruction that is to be locked must be
- aligned on a cache line boundary (L1_CACHE_ALIGNEMENT).
-
- The desc parameter is an optional (pass NULL if not used) human readable
- descriptor of the locked memory region that is used by the cache
- management code to build the /proc/cache_locks table.
-
- Note that this function does not check whether the address is valid
- or not before locking it into the cache. That duty is up to the
- caller. Also, it does not check for duplicate or overlaping
- entries.
-
- RETURN VALUE
-
- If the function is successful in locking the entry into cache, a
- zero is returned.
-
- If an error occurs, an appropriate error value is returned.
-
- -EINVAL The memory address provided was not cache line aligned
- -ENOMEM Could not allocate memory to complete operation
- -ENOSPC Not enough space left on cache to lock in requested region
- -EIO Unknown error
-
-III. Cache Unlocking
-
- SYNOPSIS
-
- int cache_unlock(void *addr)
-
- DESCRIPTION
-
- This function unlocks a portion of memory that was previously locked
- into either the I or D cache.
-
- RETURN VALUE
-
- If the entry is cleanly unlocked from the cache, a 0 is returned.
- In the case of an error, an appropriate error is returned.
-
- -ENOENT No entry with given address associated with this cache
- -EIO Unknown error
-
-
+++ /dev/null
-
-Intel's XScale Microarchitecture processors provide a Performance
-Monitoring Unit (PMU) that can be utilized to provide information
-that can be useful for fine tuning of code. This text file describes
-the API that's been developed for use by Linux kernel programmers.
-When I have some extra time on my hand, I will extend the code to
-provide support for user mode performance monitoring (which is
-probably much more useful). Note that to get the most usage out
-of the PMU, I highly reccomend getting the XScale reference manual
-from Intel and looking at chapter 12.
-
-To use the PMU, you must #include <asm/xscale-pmu.h> in your source file.
-
-Since there's only one PMU, only one user can currently use the PMU
-at a given time. To claim the PMU for usage, call pmu_claim() which
-returns an identifier. When you are done using the PMU, call
-pmu_release() with the identifier that you were given by pmu_claim.
-
-In addition, the PMU can only be used on XScale based systems that
-provide an external timer. Systems that the PMU is currently supported
-on are:
-
- - Cyclone IQ80310
-
-Before delving into how to use the PMU code, let's do a quick overview
-of the PMU itself. The PMU consists of three registers that can be
-used for performance measurements. The first is the CCNT register with
-provides the number of clock cycles elapsed since the PMU was started.
-The next two register, PMN0 and PMN1, are eace user programmable to
-provide 1 of 20 different performance statistics. By combining different
-statistics, you can derive complex performance metrics.
-
-To start the PMU, just call pmu_start(pm0, pmn1). pmn0 and pmn1 tell
-the PMU what statistics to capture and can each be one of:
-
-EVT_ICACHE_MISS
- Instruction fetches requiring access to external memory
-
-EVT_ICACHE_NO_DELIVER
- Instruction cache could not deliver an instruction. Either an
- ICACHE miss or an instruction TLB miss.
-
-EVT_ICACHE_DATA_STALL
- Stall in execution due to a data dependency. This counter is
- incremented each cycle in which the condition is present.
-
-EVT_ITLB_MISS
- Instruction TLB miss
-
-EVT_DTLB_MISS
- Data TLB miss
-
-EVT_BRANCH
- A branch instruction was executed and it may or may not have
- changed program flow
-
-EVT_BRANCH_MISS
- A branch (B or BL instructions only) was mispredicted
-
-EVT_INSTRUCTION
- An instruction was executed
-
-EVT_DCACHE_FULL_STALL
- Stall because data cache buffers are full. Incremented on every
- cycle in which condition is present.
-
-EVT_DCACHE_FULL_STALL_CONTIG
- Stall because data cache buffers are full. Incremented on every
- cycle in which condition is contigous.
-
-EVT_DCACHE_ACCESS
- Data cache access (data fetch)
-
-EVT_DCACHE_MISS
- Data cache miss
-
-EVT_DCACHE_WRITE_BACK
- Data cache write back. This counter is incremented for every
- 1/2 line (four words) that are written back.
-
-EVT_PC_CHANGED
- Software changed the PC. This is incremented only when the
- software changes the PC and there is no mode change. For example,
- a MOV instruction that targets the PC would increment the counter.
- An SWI would not as it triggers a mode change.
-
-EVT_BCU_REQUEST
- The Bus Control Unit(BCU) received a request from the core
-
-EVT_BCU_FULL
- The BCU request queue if full. A high value for this event means
- that the BCU is often waiting for to complete on the external bus.
-
-EVT_BCU_DRAIN
- The BCU queues were drained due to either a Drain Write Buffer
- command or an I/O transaction for a page that was marked as
- uncacheable and unbufferable.
-
-EVT_BCU_ECC_NO_ELOG
- The BCU detected an ECC error on the memory bus but noe ELOG
- register was available to to log the errors.
-
-EVT_BCU_1_BIT_ERR
- The BCU detected a 1-bit error while reading from the bus.
-
-EVT_RMW
- An RMW cycle occurred due to narrow write on ECC protected memory.
-
-To get the results back, call pmu_stop(&results) where results is defined
-as a struct pmu_results:
-
- struct pmu_results
- {
- u32 ccnt; /* Clock Counter Register */
- u32 ccnt_of; /
- u32 pmn0; /* Performance Counter Register 0 */
- u32 pmn0_of;
- u32 pmn1; /* Performance Counter Register 1 */
- u32 pmn1_of;
- };
-
-Pretty simple huh? Following are some examples of how to get some commonly
-wanted numbers out of the PMU data. Note that since you will be dividing
-things, this isn't super useful from the kernel and you need to printk the
-data out to syslog. See [1] for more examples.
-
-Instruction Cache Efficiency
-
- pmu_start(EVT_INSTRUCTION, EVT_ICACHE_MISS);
- ...
- pmu_stop(&results);
-
- icache_miss_rage = results.pmn1 / results.pmn0;
- cycles_per_instruction = results.ccnt / results.pmn0;
-
-Data Cache Efficiency
-
- pmu_start(EVT_DCACHE_ACCESS, EVT_DCACHE_MISS);
- ...
- pmu_stop(&results);
-
- dcache_miss_rage = results.pmn1 / results.pmn0;
-
-Instruction Fetch Latency
-
- pmu_start(EVT_ICACHE_NO_DELIVER, EVT_ICACHE_MISS);
- ...
- pmu_stop(&results);
-
- average_stall_waiting_for_instruction_fetch =
- results.pmn0 / results.pmn1;
-
- percent_stall_cycles_due_to_instruction_fetch =
- results.pmn0 / results.ccnt;
-
-
-ToDo:
-
-- Add support for usermode PMU usage. This might require hooking into
- the scheduler so that we pause the PMU when the task that requested
- statistics is scheduled out.
-
---
-This code is still under development, so please feel free to send patches,
-questions, comments, etc to me.
-
-Deepak Saxena <dsaxena@mvista.com>
-
+++ /dev/null
-
-Intel's XScale Microarchitecture provides support for locking of TLB
-entries in both the instruction and data TLBs. This file provides
-an overview of the API that has been developed to take advantage of this
-feature from kernel space. Note that there is NO support for user space.
-
-In general, this feature should be used in conjunction with locking
-data or instructions into the appropriate caches. See the file
-cache-lock.txt in this directory.
-
-If you have any questions, comments, patches, etc, please contact me.
-
-Deepak Saxena <dsaxena@mvista.com>
-
-
-API DESCRIPTION
-
-I. Header file
-
- #include <asm/xscale-lock.h>
-
-II. Locking an entry into the TLB
-
- SYNOPSIS
-
- xscale_tlb_lock(u8 tlb_type, u32 addr);
-
- /*
- * TLB types
- */
- #define ITLB 0x0
- #define DTLB 0x1
-
- DESCRIPTION
-
- This function locks the virtual to physical mapping for virtual
- address addr into the requested TLB.
-
- RETURN VALUE
-
- If the entry is properly locked into the TLB, a 0 is returned.
- In case of an error, an appropriate error is returned.
-
- -ENOSPC No more entries left in the TLB
- -EIO Unknown error
-
-III. Unlocking an entry from a TLB
-
- SYNOPSIS
-
- xscale_tlb_unlock(u8 tlb_type, u32 addr);
-
- DESCRIPTION
-
- This function unlocks the entry for virtual address addr from the
- specified cache.
-
- RETURN VALUE
-
- If the TLB entry is properly unlocked, a 0 is returned.
- In case of an error, an appropriate error is returned.
-
- -ENOENT No entry for given address in specified TLB
-
+++ /dev/null
-
-relayfs - a high-speed data relay filesystem
-============================================
-
-relayfs is a filesystem designed to provide an efficient mechanism for
-tools and facilities to relay large amounts of data from kernel space
-to user space.
-
-The main idea behind relayfs is that every data flow is put into a
-separate "channel" and each channel is a file. In practice, each
-channel is a separate memory buffer allocated from within kernel space
-upon channel instantiation. Software needing to relay data to user
-space would open a channel or a number of channels, depending on its
-needs, and would log data to that channel. All the buffering and
-locking mechanics are taken care of by relayfs. The actual format and
-protocol used for each channel is up to relayfs' clients.
-
-relayfs makes no provisions for copying the same data to more than a
-single channel. This is for the clients of the relay to take care of,
-and so is any form of data filtering. The purpose is to keep relayfs
-as simple as possible.
-
-
-Usage
-=====
-
-In addition to the relayfs kernel API described below, relayfs
-implements basic file operations. Here are the file operations that
-are available and some comments regarding their behavior:
-
-open() enables user to open an _existing_ channel. A channel can be
- opened in blocking or non-blocking mode, and can be opened
- for reading as well as for writing. Readers will by default
- be auto-consuming.
-
-mmap() results in channel's memory buffer being mmapped into the
- caller's memory space.
-
-read() since we are dealing with circular buffers, the user is only
- allowed to read forward. Some apps may want to loop around
- read() waiting for incoming data - if there is no data
- available, read will put the reader on a wait queue until
- data is available (blocking mode). Non-blocking reads return
- -EAGAIN if data is not available.
-
-
-write() writing from user space operates exactly as relay_write() does
- (described below).
-
-poll() POLLIN/POLLRDNORM/POLLOUT/POLLWRNORM/POLLERR supported.
-
-close() decrements the channel's refcount. When the refcount reaches
- 0 i.e. when no process or kernel client has the file open
- (see relay_close() below), the channel buffer is freed.
-
-
-In order for a user application to make use of relayfs files, the
-relayfs filesystem must be mounted. For example,
-
- mount -t relayfs relayfs /mountpoint
-
-
-The relayfs kernel API
-======================
-
-relayfs channels are implemented as circular buffers subdivided into
-'sub-buffers'. kernel clients write data into the channel using
-relay_write(), and are notified via a set of callbacks when
-significant events occur within the channel. 'Significant events'
-include:
-
-- a sub-buffer has been filled i.e. the current write won't fit into the
- current sub-buffer, and a 'buffer-switch' is triggered, after which
- the data is written into the next buffer (if the next buffer is
- empty). The client is notified of this condition via two callbacks,
- one providing an opportunity to perform start-of-buffer tasks, the
- other end-of-buffer tasks.
-
-- data is ready for the client to process. The client can choose to
- be notified either on a per-sub-buffer basis (bulk delivery) or
- per-write basis (packet delivery).
-
-- data has been written to the channel from user space. The client can
- use this notification to accept and process 'commands' sent to the
- channel via write(2).
-
-- the channel has been opened/closed/mapped/unmapped from user space.
- The client can use this notification to trigger actions within the
- kernel application, such as enabling/disabling logging to the
- channel. It can also return result codes from the callback,
- indicating that the operation should fail e.g. in order to restrict
- more than one user space open or mmap.
-
-- the channel needs resizing, or needs to update its
- state based on the results of the resize. Resizing the channel is
- up to the kernel client to actually perform. If the channel is
- configured for resizing, the client is notified when the unread data
- in the channel passes a preset threshold, giving it the opportunity
- to allocate a new channel buffer and replace the old one.
-
-Reader objects
---------------
-
-Channel readers use an opaque rchan_reader object to read from
-channels. For VFS readers (those using read(2) to read from a
-channel), these objects are automatically created and used internally;
-only kernel clients that need to directly read from channels, or whose
-userspace applications use mmap to access channel data, need to know
-anything about rchan_readers - others may skip this section.
-
-A relay channel can have any number of readers, each represented by an
-rchan_reader instance, which is used to encapsulate reader settings
-and state. rchan_reader objects should be treated as opaque by kernel
-clients. To create a reader object for directly accessing a channel
-from kernel space, call the add_rchan_reader() kernel API function:
-
-rchan_reader *add_rchan_reader(rchan_id, auto_consume)
-
-This function returns an rchan_reader instance if successful, which
-should then be passed to relay_read() when the kernel client is
-interested in reading from the channel.
-
-The auto_consume parameter indicates whether a read done by this
-reader will automatically 'consume' that portion of the unread channel
-buffer when relay_read() is called (see below for more details).
-
-To close the reader, call
-
-remove_rchan_reader(reader)
-
-which will remove the reader from the list of current readers.
-
-
-To create a reader object representing a userspace mmap reader in the
-kernel application, call the add_map_reader() kernel API function:
-
-rchan_reader *add_map_reader(rchan_id)
-
-This function returns an rchan_reader instance if successful, whose
-main purpose is as an argument to be passed into
-relay_buffers_consumed() when the kernel client becomes aware that
-data has been read by a user application using mmap to read from the
-channel buffer. There is no auto_consume option in this case, since
-only the kernel client/user application knows when data has been read.
-
-To close the map reader, call
-
-remove_map_reader(reader)
-
-which will remove the reader from the list of current readers.
-
-Consumed count
---------------
-
-A relayfs channel is a circular buffer, which means that if there is
-no reader reading from it or a reader reading too slowly, at some
-point the channel writer will 'lap' the reader and data will be lost.
-In normal use, readers will always be able to keep up with writers and
-the buffer is thus never in danger of becoming full. In many
-applications, it's sufficient to ensure that this is practically
-speaking always the case, by making the buffers large enough. These
-types of applications can basically open the channel as
-RELAY_MODE_CONTINOUS (the default anyway) and not worry about the
-meaning of 'consume' and skip the rest of this section.
-
-If it's important for the application that a kernel client never allow
-writers to overwrite unread data, the channel should be opened using
-RELAY_MODE_NO_OVERWRITE and must be kept apprised of the count of
-bytes actually read by the (typically) user-space channel readers.
-This count is referred to as the 'consumed count'. read(2) channel
-readers automatically update the channel's 'consumed count' as they
-read. If the usage mode is to have only read(2) readers, which is
-typically the case, the kernel client doesn't need to worry about any
-of the relayfs functions having to do with 'bytes consumed' and can
-skip the rest of this section. (Note that it is possible to have
-multiple read(2) or auto-consuming readers, but like having multiple
-readers on a pipe, these readers will race with each other i.e. it's
-supported, but doesn't make much sense).
-
-If the kernel client cannot rely on an auto-consuming reader to keep
-the 'consumed count' up-to-date, then it must do so manually, by
-making the appropriate calls to relay_buffers_consumed() or
-relay_bytes_consumed(). In most cases, this should only be necessary
-for bulk mmap clients - almost all packet clients should be covered by
-having auto-consuming read(2) readers. For mmapped bulk clients, for
-instance, there are no auto-consuming VFS readers, so the kernel
-client needs to make the call to relay_buffers_consumed() after
-sub-buffers are read.
-
-Kernel API
-----------
-
-Here's a summary of the API relayfs provides to in-kernel clients:
-
-int relay_open(channel_path, bufsize, nbufs, channel_flags,
- channel_callbacks, start_reserve, end_reserve,
- rchan_start_reserve, resize_min, resize_max, mode,
- init_buf, init_buf_size)
-int relay_write(channel_id, *data_ptr, count, time_delta_offset, **wrote)
-rchan_reader *add_rchan_reader(channel_id, auto_consume)
-int remove_rchan_reader(rchan_reader *reader)
-rchan_reader *add_map_reader(channel_id)
-int remove_map_reader(rchan_reader *reader)
-int relay_read(reader, buf, count, wait, *actual_read_offset)
-void relay_buffers_consumed(reader, buffers_consumed)
-void relay_bytes_consumed(reader, bytes_consumed, read_offset)
-int relay_bytes_avail(reader)
-int rchan_full(reader)
-int rchan_empty(reader)
-int relay_info(channel_id, *channel_info)
-int relay_close(channel_id)
-int relay_realloc_buffer(channel_id, nbufs, async)
-int relay_replace_buffer(channel_id)
-int relay_reset(int rchan_id)
-
-----------
-int relay_open(channel_path, bufsize, nbufs,
- channel_flags, channel_callbacks, start_reserve,
- end_reserve, rchan_start_reserve, resize_min, resize_max, mode)
-
-relay_open() is used to create a new entry in relayfs. This new entry
-is created according to channel_path. channel_path contains the
-absolute path to the channel file on relayfs. If, for example, the
-caller sets channel_path to "/xlog/9", a "xlog/9" entry will appear
-within relayfs automatically and the "xlog" directory will be created
-in the filesystem's root. relayfs does not implement any policy on
-its content, except to disallow the opening of two channels using the
-same file. There are, nevertheless a set of guidelines for using
-relayfs. Basically, each facility using relayfs should use a top-level
-directory identifying it. The entry created above, for example,
-presumably belongs to the "xlog" software.
-
-The remaining parameters for relay_open() are as follows:
-
-- channel_flags - an ORed combination of attribute values controlling
- common channel characteristics:
-
- - logging scheme - relayfs use 2 mutually exclusive schemes
- for logging data to a channel. The 'lockless scheme'
- reserves and writes data to a channel without the need of
- any type of locking on the channel. This is the preferred
- scheme, but may not be available on a given architecture (it
- relies on the presence of a cmpxchg instruction). It's
- specified by the RELAY_SCHEME_LOCKLESS flag. The 'locking
- scheme' either obtains a lock on the channel for writing or
- disables interrupts, depending on whether the channel was
- opened for SMP or global usage (see below). It's specified
- by the RELAY_SCHEME_LOCKING flag. While a client may want
- to explicitly specify a particular scheme to use, it's more
- convenient to specify RELAY_SCHEME_ANY for this flag, which
- will allow relayfs to choose the best available scheme i.e.
- lockless if supported.
-
- - overwrite mode (default is RELAY_MODE_CONTINUOUS) -
- If RELAY_MODE_CONTINUOUS is specified, writes to the channel
- will succeed regardless of whether there are up-to-date
- consumers or not. If RELAY_MODE_NO_OVERWRITE is specified,
- the channel becomes 'full' when the total amount of buffer
- space unconsumed by readers equals or exceeds the total
- buffer size. With the buffer in this state, writes to the
- buffer will fail - clients need to check the return code from
- relay_write() to determine if this is the case and act
- accordingly - 0 or a negative value indicate the write failed.
-
- - SMP usage - this applies only when the locking scheme is in
- use. If RELAY_USAGE_SMP is specified, it's assumed that the
- channel will be used in a per-CPU fashion and consequently,
- the only locking that will be done for writes is to disable
- local irqs. If RELAY_USAGE_GLOBAL is specified, it's assumed
- that writes to the buffer can occur within any CPU context,
- and spinlock_irq_save will be used to lock the buffer.
-
- - delivery mode - if RELAY_DELIVERY_BULK is specified, the
- client will be notified via its deliver() callback whenever a
- sub-buffer has been filled. Alternatively,
- RELAY_DELIVERY_PACKET will cause delivery to occur after the
- completion of each write. See the description of the channel
- callbacks below for more details.
-
- - timestamping - if RELAY_TIMESTAMP_TSC is specified and the
- architecture supports it, efficient TSC 'timestamps' can be
- associated with each write, otherwise more expensive
- gettimeofday() timestamping is used. At the beginning of
- each sub-buffer, a gettimeofday() timestamp and the current
- TSC, if supported, are read, and are passed on to the client
- via the buffer_start() callback. This allows correlation of
- the current time with the current TSC for subsequent writes.
- Each subsequent write is associated with a 'time delta',
- which is either the current TSC, if the channel is using
- TSCs, or the difference between the buffer_start gettimeofday
- timestamp and the gettimeofday time read for the current
- write. Note that relayfs never writes either a timestamp or
- time delta into the buffer unless explicitly asked to (see
- the description of relay_write() for details).
-
-- bufsize - the size of the 'sub-buffers' making up the circular channel
- buffer. For the lockless scheme, this must be a power of 2.
-
-- nbufs - the number of 'sub-buffers' making up the circular
- channel buffer. This must be a power of 2.
-
- The total size of the channel buffer is bufsize * nbufs rounded up
- to the next kernel page size. If the lockless scheme is used, both
- bufsize and nbufs must be a power of 2. If the locking scheme is
- used, the bufsize can be anything and nbufs must be a power of 2. If
- RELAY_SCHEME_ANY is used, the bufsize and nbufs should be a power of 2.
-
- NOTE: if nbufs is 1, relayfs will bypass the normal size
- checks and will allocate an rvmalloced buffer of size bufsize.
- This buffer will be freed when relay_close() is called, if the channel
- isn't still being referenced.
-
-- callbacks - a table of callback functions called when events occur
- within the data relay that clients need to know about:
-
- - int buffer_start(channel_id, current_write_pos, buffer_id,
- start_time, start_tsc, using_tsc) -
-
- called at the beginning of a new sub-buffer, the
- buffer_start() callback gives the client an opportunity to
- write data into space reserved at the beginning of a
- sub-buffer. The client should only write into the buffer
- if it specified a value for start_reserve and/or
- channel_start_reserve (see below) when the channel was
- opened. In the latter case, the client can determine
- whether to write its one-time rchan_start_reserve data by
- examining the value of buffer_id, which will be 0 for the
- first sub-buffer. The address that the client can write
- to is contained in current_write_pos (the client by
- definition knows how much it can write i.e. the value it
- passed to relay_open() for start_reserve/
- channel_start_reserve). start_time contains the
- gettimeofday() value for the start of the buffer and start
- TSC contains the TSC read at the same time. The using_tsc
- param indicates whether or not start_tsc is valid (it
- wouldn't be if TSC timestamping isn't being used).
-
- The client should return the number of bytes it wrote to
- the channel, 0 if none.
-
- - int buffer_end(channel_id, current_write_pos, end_of_buffer,
- end_time, end_tsc, using_tsc)
-
- called at the end of a sub-buffer, the buffer_end()
- callback gives the client an opportunity to perform
- end-of-buffer processing. Note that the current_write_pos
- is the position where the next write would occur, but
- since the current write wouldn't fit (which is the trigger
- for the buffer_end event), the buffer is considered full
- even though there may be unused space at the end. The
- end_of_buffer param pointer value can be used to determine
- exactly the size of the unused space. The client should
- only write into the buffer if it specified a value for
- end_reserve when the channel was opened. If the client
- doesn't write anything i.e. returns 0, the unused space at
- the end of the sub-buffer is available via relay_info() -
- this data may be needed by the client later if it needs to
- process raw sub-buffers (an alternative would be to save
- the unused bytes count value in end_reserve space at the
- end of each sub-buffer during buffer_end processing and
- read it when needed at a later time. The other
- alternative would be to use read(2), which makes the
- unused count invisible to the caller). end_time contains
- the gettimeofday() value for the end of the buffer and end
- TSC contains the TSC read at the same time. The using_tsc
- param indicates whether or not end_tsc is valid (it
- wouldn't be if TSC timestamping isn't being used).
-
- The client should return the number of bytes it wrote to
- the channel, 0 if none.
-
- - void deliver(channel_id, from, len)
-
- called when data is ready for the client. This callback
- is used to notify a client when a sub-buffer is complete
- (in the case of bulk delivery) or a single write is
- complete (packet delivery). A bulk delivery client might
- wish to then signal a daemon that a sub-buffer is ready.
- A packet delivery client might wish to process the packet
- or send it elsewhere. The from param is a pointer to the
- delivered data and len specifies how many bytes are ready.
-
- - void user_deliver(channel_id, from, len)
-
- called when data has been written to the channel from user
- space. This callback is used to notify a client when a
- successful write from userspace has occurred, independent
- of whether bulk or packet delivery is in use. This can be
- used to allow userspace programs to communicate with the
- kernel client through the channel via out-of-band write(2)
- 'commands' instead of via ioctls, for instance. The from
- param is a pointer to the delivered data and len specifies
- how many bytes are ready. Note that this callback occurs
- after the bytes have been successfully written into the
- channel, which means that channel readers must be able to
- deal with the 'command' data which will appear in the
- channel data stream just as any other userspace or
- non-userspace write would.
-
- - int needs_resize(channel_id, resize_type,
- suggested_buf_size, suggested_n_bufs)
-
- called when a channel's buffers are in danger of becoming
- full i.e. the number of unread bytes in the channel passes
- a preset threshold, or when the current capacity of a
- channel's buffer is no longer needed. Also called to
- notify the client when a channel's buffer has been
- replaced. If resize_type is RELAY_RESIZE_EXPAND or
- RELAY_RESIZE_SHRINK, the kernel client should arrange to
- call relay_realloc_buffer() with the suggested buffer size
- and buffer count, which will allocate (but will not
- replace the old one) a new buffer of the recommended size
- for the channel. When the allocation has completed,
- needs_resize() is again called, this time with a
- resize_type of RELAY_RESIZE_REPLACE. The kernel client
- should then arrange to call relay_replace_buffer() to
- actually replace the old channel buffer with the newly
- allocated buffer. Finally, once the buffer replacement
- has completed, needs_resize() is again called, this time
- with a resize_type of RELAY_RESIZE_REPLACED, to inform the
- client that the replacement is complete and additionally
- confirming the current sub-buffer size and number of
- sub-buffers. Note that a resize can be canceled if
- relay_realloc_buffer() is called with the async param
- non-zero and the resize conditions no longer hold. In
- this case, the RELAY_RESIZE_REPLACED suggested number of
- sub-buffers will be the same as the number of sub-buffers
- that existed before the RELAY_RESIZE_SHRINK or EXPAND i.e.
- values indicating that the resize didn't actually occur.
-
- - int fileop_notify(channel_id, struct file *filp, enum relay_fileop)
-
- called when a userspace file operation has occurred or
- will occur on a relayfs channel file. These notifications
- can be used by the kernel client to trigger actions within
- the kernel client when the corresponding event occurs,
- such as enabling logging only when a userspace application
- opens or mmaps a relayfs file and disabling it again when
- the file is closed or unmapped. The kernel client can
- also return its own return value, which can affect the
- outcome of file operation - returning 0 indicates that the
- operation should succeed, and returning a negative value
- indicates that the operation should be failed, and that
- the returned value should be returned to the ultimate
- caller e.g. returning -EPERM from the open fileop will
- cause the open to fail with -EPERM. Among other things,
- the return value can be used to restrict a relayfs file
- from being opened or mmap'ed more than once. The currently
- implemented fileops are:
-
- RELAY_FILE_OPEN - a relayfs file is being opened. Return
- 0 to allow it to succeed, negative to
- have it fail. A negative return value will
- be passed on unmodified to the open fileop.
- RELAY_FILE_CLOSE- a relayfs file is being closed. The return
- value is ignored.
- RELAY_FILE_MAP - a relayfs file is being mmap'ed. Return 0
- to allow it to succeed, negative to have
- it fail. A negative return value will be
- passed on unmodified to the mmap fileop.
- RELAY_FILE_UNMAP- a relayfs file is being unmapped. The return
- value is ignored.
-
- - void ioctl(rchan_id, cmd, arg)
-
- called when an ioctl call is made using a relayfs file
- descriptor. The cmd and arg are passed along to this
- callback unmodified for it to do as it wishes with. The
- return value from this callback is used as the return value
- of the ioctl call.
-
- If the callbacks param passed to relay_open() is NULL, a set of
- default do-nothing callbacks will be defined for the channel.
- Likewise, any NULL rchan_callback function contained in a non-NULL
- callbacks struct will be filled in with a default callback function
- that does nothing.
-
-- start_reserve - the number of bytes to be reserved at the start of
- each sub-buffer. The client can do what it wants with this number
- of bytes when the buffer_start() callback is invoked. Typically
- clients would use this to write per-sub-buffer header data.
-
-- end_reserve - the number of bytes to be reserved at the end of each
- sub-buffer. The client can do what it wants with this number of
- bytes when the buffer_end() callback is invoked. Typically clients
- would use this to write per-sub-buffer footer data.
-
-- channel_start_reserve - the number of bytes to be reserved, in
- addition to start_reserve, at the beginning of the first sub-buffer
- in the channel. The client can do what it wants with this number of
- bytes when the buffer_start() callback is invoked. Typically
- clients would use this to write per-channel header data.
-
-- resize_min - if set, this signifies that the channel is
- auto-resizeable. The value specifies the size that the channel will
- try to maintain as a normal working size, and that it won't go
- below. The client makes use of the resizing callbacks and
- relay_realloc_buffer() and relay_replace_buffer() to actually effect
- the resize.
-
-- resize_max - if set, this signifies that the channel is
- auto-resizeable. The value specifies the maximum size the channel
- can have as a result of resizing.
-
-- mode - if non-zero, specifies the file permissions that will be given
- to the channel file. If 0, the default rw user perms will be used.
-
-- init_buf - if non-NULL, rather than allocating the channel buffer,
- this buffer will be used as the initial channel buffer. The kernel
- API function relay_discard_init_buf() can later be used to have
- relayfs allocate a normal mmappable channel buffer and switch over
- to using it after copying the init_buf contents into it. Currently,
- the size of init_buf must be exactly buf_size * n_bufs. The caller
- is responsible for managing the init_buf memory. This feature is
- typically used for init-time channel use and should normally be
- specified as NULL.
-
-- init_buf_size - the total size of init_buf, if init_buf is specified
- as non-NULL. Currently, the size of init_buf must be exactly
- buf_size * n_bufs.
-
-Upon successful completion, relay_open() returns a channel id
-to be used for all other operations with the relay. All buffers
-managed by the relay are allocated using rvmalloc/rvfree to allow
-for easy mmapping to user-space.
-
-----------
-int relay_write(channel_id, *data_ptr, count, time_delta_offset, **wrote_pos)
-
-relay_write() reserves space in the channel and writes count bytes of
-data pointed to by data_ptr to it. Automatically performs any
-necessary locking, depending on the scheme and SMP usage in effect (no
-locking is done for the lockless scheme regardless of usage). It
-returns the number of bytes written, or 0/negative on failure. If
-time_delta_offset is >= 0, the internal time delta, the internal time
-delta calculated when the slot was reserved will be written at that
-offset. This is the TSC or gettimeofday() delta between the current
-write and the beginning of the buffer, whichever method is being used
-by the channel. Trying to write a count larger than the bufsize
-specified to relay_open() (taking into account the reserved
-start-of-buffer and end-of-buffer space as well) will fail. If
-wrote_pos is non-NULL, it will receive the location the data was
-written to, which may be needed for some applications but is not
-normally interesting. Most applications should pass in NULL for this
-param.
-
-----------
-struct rchan_reader *add_rchan_reader(int rchan_id, int auto_consume)
-
-add_rchan_reader creates and initializes a reader object for a
-channel. An opaque rchan_reader object is returned on success, and is
-passed to relay_read() when reading the channel. If the boolean
-auto_consume parameter is 1, the reader is defined to be
-auto-consuming. auto-consuming reader objects are automatically
-created and used for VFS read(2) readers.
-
-----------
-void remove_rchan_reader(struct rchan_reader *reader)
-
-remove_rchan_reader finds and removes the given reader from the
-channel. This function is used only by non-VFS read(2) readers. VFS
-read(2) readers are automatically removed when the corresponding file
-object is closed.
-
-----------
-reader add_map_reader(int rchan_id)
-
-Creates and initializes an rchan_reader object for channel map
-readers, and is needed for updating relay_bytes/buffers_consumed()
-when kernel clients become aware of the need to do so by their mmap
-user clients.
-
-----------
-int remove_map_reader(reader)
-
-Finds and removes the given map reader from the channel. This function
-is useful only for map readers.
-
-----------
-int relay_read(reader, buf, count, wait, *actual_read_offset)
-
-Reads count bytes from the channel, or as much as is available within
-the sub-buffer currently being read. The read offset that will be
-read from is the position contained within the reader object. If the
-wait flag is set, buf is non-NULL, and there is nothing available, it
-will wait until there is. If the wait flag is 0 and there is nothing
-available, -EAGAIN is returned. If buf is NULL, the value returned is
-the number of bytes that would have been read. actual_read_offset is
-the value that should be passed as the read offset to
-relay_bytes_consumed, needed only if the reader is not auto-consuming
-and the channel is MODE_NO_OVERWRITE, but in any case, it must not be
-NULL.
-
-----------
-
-int relay_bytes_avail(reader)
-
-Returns the number of bytes available relative to the reader's current
-read position within the corresponding sub-buffer, 0 if there is
-nothing available. Note that this doesn't return the total bytes
-available in the channel buffer - this is enough though to know if
-anything is available, however, or how many bytes might be returned
-from the next read.
-
-----------
-void relay_buffers_consumed(reader, buffers_consumed)
-
-Adds to the channel's consumed buffer count. buffers_consumed should
-be the number of buffers newly consumed, not the total number
-consumed. NOTE: kernel clients don't need to call this function if
-the reader is auto-consuming or the channel is MODE_CONTINUOUS.
-
-In order for the relay to detect the 'buffers full' condition for a
-channel, it must be kept up-to-date with respect to the number of
-buffers consumed by the client. If the addition of the value of the
-bufs_consumed param to the current bufs_consumed count for the channel
-would exceed the bufs_produced count for the channel, the channel's
-bufs_consumed count will be set to the bufs_produced count for the
-channel. This allows clients to 'catch up' if necessary.
-
-----------
-void relay_bytes_consumed(reader, bytes_consumed, read_offset)
-
-Adds to the channel's consumed count. bytes_consumed should be the
-number of bytes actually read e.g. return value of relay_read() and
-the read_offset should be the actual offset the bytes were read from
-e.g. the actual_read_offset set by relay_read(). NOTE: kernel clients
-don't need to call this function if the reader is auto-consuming or
-the channel is MODE_CONTINUOUS.
-
-In order for the relay to detect the 'buffers full' condition for a
-channel, it must be kept up-to-date with respect to the number of
-bytes consumed by the client. For packet clients, it makes more sense
-to update after each read rather than after each complete sub-buffer
-read. The bytes_consumed count updates bufs_consumed when a buffer
-has been consumed so this count remains consistent.
-
-----------
-int relay_info(channel_id, *channel_info)
-
-relay_info() fills in an rchan_info struct with channel status and
-attribute information such as usage modes, sub-buffer size and count,
-the allocated size of the entire buffer, buffers produced and
-consumed, current buffer id, count of writes lost due to buffers full
-condition.
-
-The virtual address of the channel buffer is also available here, for
-those clients that need it.
-
-Clients may need to know how many 'unused' bytes there are at the end
-of a given sub-buffer. This would only be the case if the client 1)
-didn't either write this count to the end of the sub-buffer or
-otherwise note it (it's available as the difference between the buffer
-end and current write pos params in the buffer_end callback) (if the
-client returned 0 from the buffer_end callback, it's assumed that this
-is indeed the case) 2) isn't using the read() system call to read the
-buffer. In other words, if the client isn't annotating the stream and
-is reading the buffer by mmaping it, this information would be needed
-in order for the client to 'skip over' the unused bytes at the ends of
-sub-buffers.
-
-Additionally, for the lockless scheme, clients may need to know
-whether a particular sub-buffer is actually complete. An array of
-boolean values, one per sub-buffer, contains non-zero if the buffer is
-complete, non-zero otherwise.
-
-----------
-int relay_close(channel_id)
-
-relay_close() is used to close the channel. It finalizes the last
-sub-buffer (the one currently being written to) and marks the channel
-as finalized. The channel buffer and channel data structure are then
-freed automatically when the last reference to the channel is given
-up.
-
-----------
-int relay_realloc_buffer(channel_id, nbufs, async)
-
-Allocates a new channel buffer using the specified sub-buffer count
-(note that resizing can't change sub-buffer sizes). If async is
-non-zero, the allocation is done in the background using a work queue.
-When the allocation has completed, the needs_resize() callback is
-called with a resize_type of RELAY_RESIZE_REPLACE. This function
-doesn't replace the old buffer with the new - see
-relay_replace_buffer().
-
-This function is called by kernel clients in response to a
-needs_resize() callback call with a resize type of RELAY_RESIZE_EXPAND
-or RELAY_RESIZE_SHRINK. That callback also includes a suggested
-new_bufsize and new_nbufs which should be used when calling this
-function.
-
-Returns 0 on success, or errcode if the channel is busy or if
-the allocation couldn't happen for some reason.
-
-NOTE: if async is not set, this function should not be called with a
-lock held, as it may sleep.
-
-----------
-int relay_replace_buffer(channel_id)
-
-Replaces the current channel buffer with the new buffer allocated by
-relay_realloc_buffer and contained in the channel struct. When the
-replacement is complete, the needs_resize() callback is called with
-RELAY_RESIZE_REPLACED. This function is called by kernel clients in
-response to a needs_resize() callback having a resize type of
-RELAY_RESIZE_REPLACE.
-
-Returns 0 on success, or errcode if the channel is busy or if the
-replacement or previous allocation didn't happen for some reason.
-
-NOTE: This function will not sleep, so can called in any context and
-with locks held. The client should, however, ensure that the channel
-isn't actively being read from or written to.
-
-----------
-int relay_reset(rchan_id)
-
-relay_reset() has the effect of erasing all data from the buffer and
-restarting the channel in its initial state. The buffer itself is not
-freed, so any mappings are still in effect. NOTE: Care should be
-taken that the channnel isn't actually being used by anything when
-this call is made.
-
-----------
-int rchan_full(reader)
-
-returns 1 if the channel is full with respect to the reader, 0 if not.
-
-----------
-int rchan_empty(reader)
-
-returns 1 if the channel is empty with respect to the reader, 0 if not.
-
-----------
-int relay_discard_init_buf(rchan_id)
-
-allocates an mmappable channel buffer, copies the contents of init_buf
-into it, and sets the current channel buffer to the newly allocated
-buffer. This function is used only in conjunction with the init_buf
-and init_buf_size params to relay_open(), and is typically used when
-the ability to write into the channel at init-time is needed. The
-basic usage is to specify an init_buf and init_buf_size to relay_open,
-then call this function when it's safe to switch over to a normally
-allocated channel buffer. 'Safe' means that the caller is in a
-context that can sleep and that nothing is actively writing to the
-channel. Returns 0 if successful, negative otherwise.
-
-
-Writing directly into the channel
-=================================
-
-Using the relay_write() API function as described above is the
-preferred means of writing into a channel. In some cases, however,
-in-kernel clients might want to write directly into a relay channel
-rather than have relay_write() copy it into the buffer on the client's
-behalf. Clients wishing to do this should follow the model used to
-implement relay_write itself. The general sequence is:
-
-- get a pointer to the channel via rchan_get(). This increments the
- channel's reference count.
-- call relay_lock_channel(). This will perform the proper locking for
- the channel given the scheme in use and the SMP usage.
-- reserve a slot in the channel via relay_reserve()
-- write directly to the reserved address
-- call relay_commit() to commit the write
-- call relay_unlock_channel()
-- call rchan_put() to release the channel reference
-
-In particular, clients should make sure they call rchan_get() and
-rchan_put() and not hold on to references to the channel pointer.
-Also, forgetting to use relay_lock_channel()/relay_unlock_channel()
-has no effect if the lockless scheme is being used, but could result
-in corrupted buffer contents if the locking scheme is used.
-
-
-Limitations
-===========
-
-Writes made via the write() system call are currently limited to 2
-pages worth of data. There is no such limit on the in-kernel API
-function relay_write().
-
-User applications can currently only mmap the complete buffer (it
-doesn't really make sense to mmap only part of it, given its purpose).
-
-
-Latest version
-==============
-
-The latest version can be found at:
-
-http://www.opersys.com/relayfs
-
-Example relayfs clients, such as dynamic printk and the Linux Trace
-Toolkit, can also be found there.
-
-
-Credits
-=======
-
-The ideas and specs for relayfs came about as a result of discussions
-on tracing involving the following:
-
-Michel Dagenais <michel.dagenais@polymtl.ca>
-Richard Moore <richardj_moore@uk.ibm.com>
-Bob Wisniewski <bob@watson.ibm.com>
-Karim Yaghmour <karim@opersys.com>
-Tom Zanussi <zanussi@us.ibm.com>
-
-Also thanks to Hubertus Franke for a lot of useful suggestions and bug
-reports, and for contributing the klog code.
+++ /dev/null
-/*
- * linux/arch/arm/mach-omap/innovator1510.c
- *
- * Board specific inits for OMAP-1510 Innovator
- *
- * Copyright (C) 2001 RidgeRun, Inc.
- * Author: Greg Lonnon <glonnon@ridgerun.com>
- *
- * Copyright (C) 2002 MontaVista Software, Inc.
- *
- * Separated FPGA interrupts from innovator1510.c and cleaned up for 2.6
- * Copyright (C) 2004 Nokia Corporation by Tony Lindrgen <tony@atomide.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
-
-#include <linux/kernel.h>
-#include <linux/init.h>
-#include <linux/device.h>
-
-#include <asm/hardware.h>
-#include <asm/mach/arch.h>
-#include <asm/mach/map.h>
-
-#include <asm/arch/clocks.h>
-#include <asm/arch/gpio.h>
-#include <asm/arch/fpga.h>
-
-#include "common.h"
-
-extern int omap_gpio_init(void);
-
-void innovator_init_irq(void)
-{
- omap_init_irq();
- omap_gpio_init();
- fpga_init_irq();
-}
-
-static struct resource smc91x_resources[] = {
- [0] = {
- .start = OMAP1510P1_FPGA_ETHR_START, /* Physical */
- .end = OMAP1510P1_FPGA_ETHR_START + 16,
- .flags = IORESOURCE_MEM,
- },
- [1] = {
- .start = INT_ETHER,
- .end = INT_ETHER,
- .flags = IORESOURCE_IRQ,
- },
-};
-
-static struct platform_device smc91x_device = {
- .name = "smc91x",
- .id = 0,
- .num_resources = ARRAY_SIZE(smc91x_resources),
- .resource = smc91x_resources,
-};
-
-static struct platform_device *devices[] __initdata = {
- &smc91x_device,
-};
-
-static void __init innovator_init(void)
-{
- if (!machine_is_innovator())
- return;
-
- (void) platform_add_devices(devices, ARRAY_SIZE(devices));
-}
-
-/* Only FPGA needs to be mapped here. All others are done with ioremap */
-static struct map_desc innovator_io_desc[] __initdata = {
-{ OMAP1510P1_FPGA_BASE, OMAP1510P1_FPGA_START, OMAP1510P1_FPGA_SIZE,
- MT_DEVICE },
-};
-
-static void __init innovator_map_io(void)
-{
- omap_map_io();
- iotable_init(innovator_io_desc, ARRAY_SIZE(innovator_io_desc));
-
- /* Dump the Innovator FPGA rev early - useful info for support. */
- printk("Innovator FPGA Rev %d.%d Board Rev %d\n",
- fpga_read(OMAP1510P1_FPGA_REV_HIGH),
- fpga_read(OMAP1510P1_FPGA_REV_LOW),
- fpga_read(OMAP1510P1_FPGA_BOARD_REV));
-}
-
-MACHINE_START(INNOVATOR, "TI-Innovator/OMAP1510")
- MAINTAINER("MontaVista Software, Inc.")
- BOOT_MEM(0x10000000, 0xe0000000, 0xe0000000)
- BOOT_PARAMS(0x10000100)
- MAPIO(innovator_map_io)
- INITIRQ(innovator_init_irq)
- INIT_MACHINE(innovator_init)
-MACHINE_END
+++ /dev/null
-/*
- * linux/arch/arm/mach-omap/innovator1610.c
- *
- * This file contains Innovator-specific code.
- *
- * Copyright (C) 2002 MontaVista Software, Inc.
- *
- * Copyright (C) 2001 RidgeRun, Inc.
- * Author: Greg Lonnon <glonnon@ridgerun.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
-
-#include <linux/config.h>
-#include <linux/types.h>
-#include <linux/init.h>
-#include <linux/major.h>
-#include <linux/kernel.h>
-#include <linux/device.h>
-#include <linux/errno.h>
-
-#include <asm/setup.h>
-#include <asm/page.h>
-#include <asm/hardware.h>
-#include <asm/mach/arch.h>
-#include <asm/mach/map.h>
-#include <asm/arch/irqs.h>
-
-#include "common.h"
-
-void
-innovator_init_irq(void)
-{
- omap_init_irq();
-}
-
-static struct resource smc91x_resources[] = {
- [0] = {
- .start = OMAP1610_ETHR_START, /* Physical */
- .end = OMAP1610_ETHR_START + SZ_4K,
- .flags = IORESOURCE_MEM,
- },
- [1] = {
- .start = 0, /* Really GPIO 0 */
- .end = 0,
- .flags = IORESOURCE_IRQ,
- },
-};
-
-static struct platform_device smc91x_device = {
- .name = "smc91x",
- .id = 0,
- .num_resources = ARRAY_SIZE(smc91x_resources),
- .resource = smc91x_resources,
-};
-
-static struct platform_device *devices[] __initdata = {
- &smc91x_device,
-};
-
-static void __init innovator_init(void)
-{
- if (!machine_is_innovator())
- return;
-
- (void) platform_add_devices(devices, ARRAY_SIZE(devices));
-}
-
-static struct map_desc innovator_io_desc[] __initdata = {
-{ OMAP1610_ETHR_BASE, OMAP1610_ETHR_START, OMAP1610_ETHR_SIZE,MT_DEVICE },
-{ OMAP1610_NOR_FLASH_BASE, OMAP1610_NOR_FLASH_START, OMAP1610_NOR_FLASH_SIZE,
- MT_DEVICE },
-};
-
-static void __init innovator_map_io(void)
-{
- omap_map_io();
- iotable_init(innovator_io_desc, ARRAY_SIZE(innovator_io_desc));
-}
-
-MACHINE_START(INNOVATOR, "TI-Innovator/OMAP1610")
- MAINTAINER("MontaVista Software, Inc.")
- BOOT_MEM(0x10000000, 0xe0000000, 0xe0000000)
- BOOT_PARAMS(0x10000100)
- MAPIO(innovator_map_io)
- INITIRQ(innovator_init_irq)
- INIT_MACHINE(innovator_init)
-MACHINE_END
-
+++ /dev/null
-/*
- * linux/arch/arm/mach-omap/irq.h
- *
- * OMAP specific interrupt bank definitions
- *
- * Copyright (C) 2004 Nokia Corporation
- * Written by Tony Lindgren <tony@atomide.com>
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by the
- * Free Software Foundation; either version 2 of the License, or (at your
- * option) any later version.
- *
- * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
- * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
- * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
- * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
- * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
- * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
- * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
- * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
- * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- *
- * You should have received a copy of the GNU General Public License along
- * with this program; if not, write to the Free Software Foundation, Inc.,
- * 675 Mass Ave, Cambridge, MA 02139, USA.
- */
-
-#define OMAP_IRQ_TYPE710 1
-#define OMAP_IRQ_TYPE730 2
-#define OMAP_IRQ_TYPE1510 3
-#define OMAP_IRQ_TYPE1610 4
-#define OMAP_IRQ_TYPE1710 5
-
-#define MAX_NR_IRQ_BANKS 4
-
-#define BANK_NR_IRQS 32
-
-struct omap_irq_desc {
- unsigned int cpu_type;
- unsigned int start_irq;
- unsigned long level_map;
- unsigned long base_reg;
- unsigned long mask_reg;
- unsigned long ack_reg;
- struct irqchip *handler;
-};
-
-struct omap_irq_bank {
- unsigned int start_irq;
- unsigned long level_map;
- unsigned long base_reg;
- unsigned long mask_reg;
- unsigned long ack_reg;
- struct irqchip *handler;
-};
-
-static void omap_offset_ack_irq(unsigned int irq);
-static void omap_offset_mask_irq(unsigned int irq);
-static void omap_offset_unmask_irq(unsigned int irq);
-static void omap_offset_mask_ack_irq(unsigned int irq);
-
-/* NOTE: These will not work if irq bank offset != 0x100 */
-#define IRQ_TO_BANK(irq) (irq >> 5)
-#define IRQ_BIT(irq) (irq & 0x1f)
-#define BANK_OFFSET(bank) ((bank - 1) * 0x100)
-
-static struct irqchip omap_offset_irq = {
- .ack = omap_offset_mask_ack_irq,
- .mask = omap_offset_mask_irq,
- .unmask = omap_offset_unmask_irq,
-};
-
-/*
- * OMAP-730 interrupt banks
- */
-static struct omap_irq_desc omap730_bank0_irqs __initdata = {
- .cpu_type = OMAP_IRQ_TYPE730,
- .start_irq = 0,
- .level_map = 0xb3f8e22f,
- .base_reg = OMAP_IH1_BASE,
- .mask_reg = OMAP_IH1_BASE + IRQ_MIR,
- .ack_reg = OMAP_IH1_BASE + IRQ_CONTROL_REG,
- .handler = &omap_offset_irq, /* IH2 regs at 0x100 offsets */
-};
-
-static struct omap_irq_desc omap730_bank1_irqs __initdata = {
- .cpu_type = OMAP_IRQ_TYPE730,
- .start_irq = 32,
- .level_map = 0xfdb9c1f2,
- .base_reg = OMAP_IH2_BASE,
- .mask_reg = OMAP_IH2_BASE + IRQ_MIR,
- .ack_reg = OMAP_IH2_BASE + IRQ_CONTROL_REG,
- .handler = &omap_offset_irq, /* IH2 regs at 0x100 offsets */
-};
-
-static struct omap_irq_desc omap730_bank2_irqs __initdata = {
- .cpu_type = OMAP_IRQ_TYPE730,
- .start_irq = 64,
- .level_map = 0x800040f3,
- .base_reg = OMAP_IH2_BASE + 0x100,
- .mask_reg = OMAP_IH2_BASE + 0x100 + IRQ_MIR,
- .ack_reg = OMAP_IH2_BASE + IRQ_CONTROL_REG, /* Not replicated */
- .handler = &omap_offset_irq, /* IH2 regs at 0x100 offsets */
-};
-
-/*
- * OMAP-1510 interrupt banks
- */
-static struct omap_irq_desc omap1510_bank0_irqs __initdata = {
- .cpu_type = OMAP_IRQ_TYPE1510,
- .start_irq = 0,
- .level_map = 0xb3febfff,
- .base_reg = OMAP_IH1_BASE,
- .mask_reg = OMAP_IH1_BASE + IRQ_MIR,
- .ack_reg = OMAP_IH1_BASE + IRQ_CONTROL_REG,
- .handler = &omap_offset_irq, /* IH2 regs at 0x100 offsets */
-};
-
-static struct omap_irq_desc omap1510_bank1_irqs __initdata = {
- .cpu_type = OMAP_IRQ_TYPE1510,
- .start_irq = 32,
- .level_map = 0xffbfffed,
- .base_reg = OMAP_IH2_BASE,
- .mask_reg = OMAP_IH2_BASE + IRQ_MIR,
- .ack_reg = OMAP_IH2_BASE + IRQ_CONTROL_REG,
- .handler = &omap_offset_irq, /* IH2 regs at 0x100 offsets */
-};
-
-/*
- * OMAP-1610 interrupt banks
- */
-static struct omap_irq_desc omap1610_bank0_irqs __initdata = {
- .cpu_type = OMAP_IRQ_TYPE1610,
- .start_irq = 0,
- .level_map = 0xb3fefe8f,
- .base_reg = OMAP_IH1_BASE,
- .mask_reg = OMAP_IH1_BASE + IRQ_MIR,
- .ack_reg = OMAP_IH1_BASE + IRQ_CONTROL_REG,
- .handler = &omap_offset_irq, /* IH2 regs at 0x100 offsets */
-};
-
-static struct omap_irq_desc omap1610_bank1_irqs __initdata = {
- .cpu_type = OMAP_IRQ_TYPE1610,
- .start_irq = 32,
- .level_map = 0xfffff7ff,
- .base_reg = OMAP_IH2_BASE,
- .mask_reg = OMAP_IH2_BASE + IRQ_MIR,
- .ack_reg = OMAP_IH2_BASE + IRQ_CONTROL_REG,
- .handler = &omap_offset_irq, /* IH2 regs at 0x100 offsets */
-};
-
-static struct omap_irq_desc omap1610_bank2_irqs __initdata = {
- .cpu_type = OMAP_IRQ_TYPE1610,
- .start_irq = 64,
- .level_map = 0xffffffff,
- .base_reg = OMAP_IH2_BASE + 0x100,
- .mask_reg = OMAP_IH2_BASE + 0x100 + IRQ_MIR,
- .ack_reg = OMAP_IH2_BASE + IRQ_CONTROL_REG, /* Not replicated */
- .handler = &omap_offset_irq, /* IH2 regs at 0x100 offsets */
-};
-
-static struct omap_irq_desc omap1610_bank3_irqs __initdata = {
- .cpu_type = OMAP_IRQ_TYPE1610,
- .start_irq = 96,
- .level_map = 0xffffffff,
- .base_reg = OMAP_IH2_BASE + 0x200,
- .mask_reg = OMAP_IH2_BASE + 0x200 + IRQ_MIR,
- .ack_reg = OMAP_IH2_BASE + IRQ_CONTROL_REG, /* Not replicated */
- .handler = &omap_offset_irq, /* IH2 regs at 0x100 offsets */
-};
+++ /dev/null
-/*
- * linux/arch/arm/mach-omap/generic.c
- *
- * Modified from innovator.c
- *
- * Code for generic OMAP board. Should work on many OMAP systems where
- * the device drivers take care of all the necessary hardware initialization.
- * Do not put any board specific code to this file; create a new machine
- * type if you need custom low-level initializations.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
-
-#include <linux/kernel.h>
-#include <linux/init.h>
-#include <linux/device.h>
-
-#include <asm/hardware.h>
-#include <asm/mach/arch.h>
-#include <asm/mach/map.h>
-
-#include <asm/arch/clocks.h>
-#include <asm/arch/gpio.h>
-#include <asm/arch/mux.h>
-
-#include "common.h"
-
-static void __init omap_generic_init_irq(void)
-{
- omap_init_irq();
-}
-
-/*
- * Muxes the serial ports on
- */
-static void __init omap_early_serial_init(void)
-{
- omap_cfg_reg(UART1_TX);
- omap_cfg_reg(UART1_RTS);
-
- omap_cfg_reg(UART2_TX);
- omap_cfg_reg(UART2_RTS);
-
- omap_cfg_reg(UART3_TX);
- omap_cfg_reg(UART3_RX);
-}
-
-static void __init omap_generic_init(void)
-{
- if (!machine_is_omap_generic())
- return;
-
- /*
- * Make sure the serial ports are muxed on at this point.
- * You have to mux them off in device drivers later on
- * if not needed.
- */
- if (cpu_is_omap1510()) {
- omap_early_serial_init();
- }
-}
-
-static void __init omap_generic_map_io(void)
-{
- omap_map_io();
-}
-
-MACHINE_START(OMAP_GENERIC, "Generic OMAP-1510/1610")
- MAINTAINER("Tony Lindgren <tony@atomide.com>")
- BOOT_MEM(0x10000000, 0xe0000000, 0xe0000000)
- BOOT_PARAMS(0x10000100)
- MAPIO(omap_generic_map_io)
- INITIRQ(omap_generic_init_irq)
- INIT_MACHINE(omap_generic_init)
-MACHINE_END
+++ /dev/null
-/*
- * linux/arch/arm/mach-omap/omap-perseus2.c
- *
- * Modified from omap-generic.c
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
-
-#include <linux/kernel.h>
-#include <linux/init.h>
-#include <linux/device.h>
-
-#include <asm/hardware.h>
-#include <asm/mach/arch.h>
-#include <asm/mach/map.h>
-
-#include <asm/arch/clocks.h>
-#include <asm/arch/gpio.h>
-#include <asm/arch/mux.h>
-
-#include <asm/arch/omap-perseus2.h>
-
-#include "common.h"
-
-void omap_perseus2_init_irq(void)
-{
- omap_init_irq();
-}
-
-static struct resource smc91x_resources[] = {
- [0] = {
- .start = OMAP730_FPGA_ETHR_START, /* Physical */
- .end = OMAP730_FPGA_ETHR_START + SZ_4K,
- .flags = IORESOURCE_MEM,
- },
- [1] = {
- .start = 0,
- .end = 0,
- .flags = INT_ETHER,
- },
-};
-
-static struct platform_device smc91x_device = {
- .name = "smc91x",
- .id = 0,
- .num_resources = ARRAY_SIZE(smc91x_resources),
- .resource = smc91x_resources,
-};
-
-static struct platform_device *devices[] __initdata = {
- &smc91x_device,
-};
-
-static void __init omap_perseus2_init(void)
-{
- if (!machine_is_omap_perseus2())
- return;
-
- (void) platform_add_devices(devices, ARRAY_SIZE(devices));
-}
-
-/* Only FPGA needs to be mapped here. All others are done with ioremap */
-static struct map_desc omap_perseus2_io_desc[] __initdata = {
- {OMAP730_FPGA_BASE, OMAP730_FPGA_START, OMAP730_FPGA_SIZE,
- MT_DEVICE},
-};
-
-static void __init omap_perseus2_map_io(void)
-{
- omap_map_io();
- iotable_init(omap_perseus2_io_desc,
- ARRAY_SIZE(omap_perseus2_io_desc));
-
- /* Early, board-dependent init */
-
- /*
- * Hold GSM Reset until needed
- */
- *DSP_M_CTL &= ~1;
-
- /*
- * UARTs -> done automagically by 8250 driver
- */
-
- /*
- * CSx timings, GPIO Mux ... setup
- */
-
- /* Flash: CS0 timings setup */
- *((volatile __u32 *) OMAP_FLASH_CFG_0) = 0x0000fff3;
- *((volatile __u32 *) OMAP_FLASH_ACFG_0) = 0x00000088;
-
- /*
- * Ethernet support trough the debug board
- * CS1 timings setup
- */
- *((volatile __u32 *) OMAP_FLASH_CFG_1) = 0x0000fff3;
- *((volatile __u32 *) OMAP_FLASH_ACFG_1) = 0x00000000;
-
- /*
- * Configure MPU_EXT_NIRQ IO in IO_CONF9 register,
- * It is used as the Ethernet controller interrupt
- */
- *((volatile __u32 *) PERSEUS2_IO_CONF_9) &= 0x1FFFFFFF;
-}
-
-MACHINE_START(OMAP_PERSEUS2, "OMAP730 Perseus2")
- MAINTAINER("Kevin Hilman <k-hilman@ti.com>")
- BOOT_MEM(0x10000000, 0xe0000000, 0xe0000000)
- BOOT_PARAMS(0x10000100)
- MAPIO(omap_perseus2_map_io)
- INITIRQ(omap_perseus2_init_irq)
- INIT_MACHINE(omap_perseus2_init)
-MACHINE_END
+++ /dev/null
-#include <stdio.h>
-
-
-void main()
-{
- int c;
- int comma=0;
- int count=0;
- while((c=getchar())!=EOF)
- {
- unsigned char x=c;
- if(comma)
- printf(",");
- else
- comma=1;
- if(count==8)
- {
- count=0;
- printf("\n");
- }
- if(count==0)
- printf("\t");
- printf("0x%02X",c);
- count++;
- }
- if(count)
- printf("\n");
- exit(0);
-}
-
-
+++ /dev/null
-#include <linux/config.h>
-#include <linux/module.h>
-#include <linux/user.h>
-#include <linux/elfcore.h>
-#include <linux/sched.h>
-#include <linux/in6.h>
-#include <linux/interrupt.h>
-#include <linux/smp_lock.h>
-#include <linux/pm.h>
-#include <linux/kernel.h>
-#include <linux/string.h>
-#include <linux/tty.h>
-
-#include <asm/semaphore.h>
-#include <asm/processor.h>
-#include <asm/uaccess.h>
-#include <asm/checksum.h>
-#include <asm/io.h>
-#include <asm/hardirq.h>
-#include <asm/delay.h>
-#include <asm/irq.h>
-#include <asm/pgtable.h>
-
-extern void dump_thread(struct pt_regs *, struct user *);
-extern unsigned long get_cmos_time(void);
-extern void __Udiv(void);
-extern void __Umod(void);
-extern void __Div(void);
-extern void __Mod(void);
-extern void __ashrdi3(void);
-extern void iounmap(void *addr);
-
-/* Platform dependent support */
-EXPORT_SYMBOL(dump_thread);
-EXPORT_SYMBOL(enable_irq);
-EXPORT_SYMBOL(disable_irq);
-EXPORT_SYMBOL(kernel_thread);
-EXPORT_SYMBOL(get_cmos_time);
-EXPORT_SYMBOL(loops_per_usec);
-
-/* String functions */
-EXPORT_SYMBOL(memcmp);
-EXPORT_SYMBOL(memmove);
-EXPORT_SYMBOL(strpbrk);
-EXPORT_SYMBOL(strstr);
-EXPORT_SYMBOL(strcpy);
-EXPORT_SYMBOL(strchr);
-EXPORT_SYMBOL(strcmp);
-EXPORT_SYMBOL(strlen);
-EXPORT_SYMBOL(strcat);
-EXPORT_SYMBOL(strncat);
-EXPORT_SYMBOL(strncmp);
-EXPORT_SYMBOL(strncpy);
-
-/* Math functions */
-EXPORT_SYMBOL(__Udiv);
-EXPORT_SYMBOL(__Umod);
-EXPORT_SYMBOL(__Div);
-EXPORT_SYMBOL(__Mod);
-EXPORT_SYMBOL(__ashrdi3);
-
-/* Memory functions */
-EXPORT_SYMBOL(__ioremap);
-EXPORT_SYMBOL(iounmap);
-
-/* Semaphore functions */
-EXPORT_SYMBOL(__up);
-EXPORT_SYMBOL(__down);
-EXPORT_SYMBOL(__down_interruptible);
-EXPORT_SYMBOL(__down_trylock);
-
-/* Export shadow registers for the CPU I/O pins */
-EXPORT_SYMBOL(genconfig_shadow);
-EXPORT_SYMBOL(port_pa_data_shadow);
-EXPORT_SYMBOL(port_pa_dir_shadow);
-EXPORT_SYMBOL(port_pb_data_shadow);
-EXPORT_SYMBOL(port_pb_dir_shadow);
-EXPORT_SYMBOL(port_pb_config_shadow);
-EXPORT_SYMBOL(port_g_data_shadow);
-
-/* Userspace access functions */
-EXPORT_SYMBOL(__copy_user_zeroing);
-EXPORT_SYMBOL(__copy_user);
-
-/* Cache flush functions */
-EXPORT_SYMBOL(flush_etrax_cache);
-EXPORT_SYMBOL(prepare_rx_descriptor);
-
-#undef memcpy
-#undef memset
-extern void * memset(void *, int, __kernel_size_t);
-extern void * memcpy(void *, const void *, __kernel_size_t);
-EXPORT_SYMBOL_NOVERS(memcpy);
-EXPORT_SYMBOL_NOVERS(memset);
-
-
+++ /dev/null
-/*
- * linux/arch/i386/kernel/entry_trampoline.c
- *
- * (C) Copyright 2003 Ingo Molnar
- *
- * This file contains the needed support code for 4GB userspace
- */
-
-#include <linux/init.h>
-#include <linux/smp.h>
-#include <linux/mm.h>
-#include <linux/sched.h>
-#include <linux/kernel.h>
-#include <linux/string.h>
-#include <linux/highmem.h>
-#include <asm/desc.h>
-#include <asm/atomic_kmap.h>
-
-extern char __entry_tramp_start, __entry_tramp_end, __start___entry_text;
-
-void __init init_entry_mappings(void)
-{
-#ifdef CONFIG_X86_HIGH_ENTRY
-
- void *tramp;
- int p;
-
- /*
- * We need a high IDT and GDT for the 4G/4G split:
- */
- trap_init_virtual_IDT();
-
- __set_fixmap(FIX_ENTRY_TRAMPOLINE_0, __pa((unsigned long)&__entry_tramp_start), PAGE_KERNEL);
- __set_fixmap(FIX_ENTRY_TRAMPOLINE_1, __pa((unsigned long)&__entry_tramp_start) + PAGE_SIZE, PAGE_KERNEL);
- tramp = (void *)fix_to_virt(FIX_ENTRY_TRAMPOLINE_0);
-
- printk("mapped 4G/4G trampoline to %p.\n", tramp);
- BUG_ON((void *)&__start___entry_text != tramp);
- /*
- * Virtual kernel stack:
- */
- BUG_ON(__kmap_atomic_vaddr(KM_VSTACK_TOP) & (THREAD_SIZE-1));
- BUG_ON(sizeof(struct desc_struct)*NR_CPUS*GDT_ENTRIES > 2*PAGE_SIZE);
- BUG_ON((unsigned int)&__entry_tramp_end - (unsigned int)&__entry_tramp_start > 2*PAGE_SIZE);
-
- /*
- * set up the initial thread's virtual stack related
- * fields:
- */
- for (p = 0; p < ARRAY_SIZE(current->thread.stack_page); p++)
- current->thread.stack_page[p] = virt_to_page((char *)current->thread_info + (p*PAGE_SIZE));
-
- current->thread_info->virtual_stack = (void *)__kmap_atomic_vaddr(KM_VSTACK_TOP);
-
- for (p = 0; p < ARRAY_SIZE(current->thread.stack_page); p++) {
- __kunmap_atomic_type(KM_VSTACK_TOP-p);
- __kmap_atomic(current->thread.stack_page[p], KM_VSTACK_TOP-p);
- }
-#endif
- current->thread_info->real_stack = (void *)current->thread_info;
- current->thread_info->user_pgd = NULL;
- current->thread.esp0 = (unsigned long)current->thread_info->real_stack + THREAD_SIZE;
-}
-
-
-
-void __init entry_trampoline_setup(void)
-{
- /*
- * old IRQ entries set up by the boot code will still hang
- * around - they are a sign of hw trouble anyway, now they'll
- * produce a double fault message.
- */
- trap_init_virtual_GDT();
-}
+++ /dev/null
-/*
- * Written by: Garry Forsgren, Unisys Corporation
- * Natalie Protasevich, Unisys Corporation
- * This file contains the code to configure and interface
- * with Unisys ES7000 series hardware system manager.
- *
- * Copyright (c) 2003 Unisys Corporation. All Rights Reserved.
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of version 2 of the GNU General Public License as
- * published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it would be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
- *
- * You should have received a copy of the GNU General Public License along
- * with this program; if not, write the Free Software Foundation, Inc., 59
- * Temple Place - Suite 330, Boston MA 02111-1307, USA.
- *
- * Contact information: Unisys Corporation, Township Line & Union Meeting
- * Roads-A, Unisys Way, Blue Bell, Pennsylvania, 19424, or:
- *
- * http://www.unisys.com
- */
-
-#include <linux/module.h>
-#include <linux/types.h>
-#include <linux/kernel.h>
-#include <linux/smp.h>
-#include <linux/string.h>
-#include <linux/spinlock.h>
-#include <linux/errno.h>
-#include <linux/notifier.h>
-#include <linux/reboot.h>
-#include <linux/init.h>
-#include <linux/acpi.h>
-#include <asm/io.h>
-#include <asm/nmi.h>
-#include <asm/smp.h>
-#include <asm/apicdef.h>
-#include "es7000.h"
-
-/*
- * ES7000 Globals
- */
-
-volatile unsigned long *psai = NULL;
-struct mip_reg *mip_reg;
-struct mip_reg *host_reg;
-int mip_port;
-unsigned long mip_addr, host_addr;
-
-/*
- * Parse the OEM Table
- */
-
-void __init
-parse_unisys_oem (char *oemptr, int oem_entries)
-{
- int i;
- int success = 0;
- unsigned char type, size;
- unsigned long val;
- char *tp = NULL;
- struct psai *psaip = NULL;
- struct mip_reg_info *mi;
- struct mip_reg *host, *mip;
-
- tp = oemptr;
-
- tp += 8;
-
- for (i=0; i <= oem_entries; i++) {
- type = *tp++;
- size = *tp++;
- tp -= 2;
- switch (type) {
- case MIP_REG:
- mi = (struct mip_reg_info *)tp;
- val = MIP_RD_LO(mi->host_reg);
- host_addr = val;
- host = (struct mip_reg *)val;
- host_reg = __va(host);
- val = MIP_RD_LO(mi->mip_reg);
- mip_addr = val;
- mip = (struct mip_reg *)val;
- mip_reg = __va(mip);
- Dprintk("es7000_mipcfg: host_reg = 0x%lx \n",
- (unsigned long)host_reg);
- Dprintk("es7000_mipcfg: mip_reg = 0x%lx \n",
- (unsigned long)mip_reg);
- success++;
- break;
- case MIP_PSAI_REG:
- psaip = (struct psai *)tp;
- if (tp != NULL) {
- if (psaip->addr)
- psai = __va(psaip->addr);
- else
- psai = NULL;
- success++;
- }
- break;
- default:
- break;
- }
- if (i == 6) break;
- tp += size;
- }
-
- if (success < 2) {
- printk("\nNo ES7000 found.\n");
- es7000_plat = 0;
- } else {
- printk("\nEnabling ES7000 specific features...\n");
- es7000_plat = 1;
- }
- return;
-}
-
-int __init
-find_unisys_acpi_oem_table(unsigned long *oem_addr, int *length)
-{
- struct acpi_table_rsdp *rsdp = NULL;
- unsigned long rsdp_phys = 0;
- struct acpi_table_header *header = NULL;
- int i;
- struct acpi_table_sdt sdt;
-
- rsdp_phys = acpi_find_rsdp();
- rsdp = __va(rsdp_phys);
- if (rsdp->rsdt_address) {
- struct acpi_table_rsdt *mapped_rsdt = NULL;
- sdt.pa = rsdp->rsdt_address;
-
- header = (struct acpi_table_header *)
- __acpi_map_table(sdt.pa, sizeof(struct acpi_table_header));
- if (!header)
- return -ENODEV;
-
- sdt.count = (header->length - sizeof(struct acpi_table_header)) >> 3;
- mapped_rsdt = (struct acpi_table_rsdt *)
- __acpi_map_table(sdt.pa, header->length);
- if (!mapped_rsdt)
- return -ENODEV;
-
- header = &mapped_rsdt->header;
-
- for (i = 0; i < sdt.count; i++)
- sdt.entry[i].pa = (unsigned long) mapped_rsdt->entry[i];
- };
- for (i = 0; i < sdt.count; i++) {
-
- header = (struct acpi_table_header *)
- __acpi_map_table(sdt.entry[i].pa,
- sizeof(struct acpi_table_header));
- if (!header)
- continue;
- if (!strncmp((char *) &header->signature, "OEM1", 4)) {
- if (!strncmp((char *) &header->oem_id, "UNISYS", 6)) {
- void *addr;
- struct oem_table *t;
- acpi_table_print(header, sdt.entry[i].pa);
- t = (struct oem_table *) __acpi_map_table(sdt.entry[i].pa, header->length);
- addr = (void *) __acpi_map_table(t->OEMTableAddr, t->OEMTableSize);
- *length = header->length;
- *oem_addr = (unsigned long) addr;
- return 0;
- }
- }
- }
- printk("ES7000: did not find Unisys ACPI OEM table!\n");
- return -1;
-}
-
-static void
-es7000_spin(int n)
-{
- int i = 0;
-
- while (i++ < n)
- rep_nop();
-}
-
-static int __init
-es7000_mip_write(struct mip_reg *mip_reg)
-{
- int status = 0;
- int spin;
-
- spin = MIP_SPIN;
- while (((unsigned long long)host_reg->off_38 &
- (unsigned long long)MIP_VALID) != 0) {
- if (--spin <= 0) {
- printk("es7000_mip_write: Timeout waiting for Host Valid Flag");
- return -1;
- }
- es7000_spin(MIP_SPIN);
- }
-
- memcpy(host_reg, mip_reg, sizeof(struct mip_reg));
- outb(1, mip_port);
-
- spin = MIP_SPIN;
-
- while (((unsigned long long)mip_reg->off_38 &
- (unsigned long long)MIP_VALID) == 0) {
- if (--spin <= 0) {
- printk("es7000_mip_write: Timeout waiting for MIP Valid Flag");
- return -1;
- }
- es7000_spin(MIP_SPIN);
- }
-
- status = ((unsigned long long)mip_reg->off_0 &
- (unsigned long long)0xffff0000000000) >> 48;
- mip_reg->off_38 = ((unsigned long long)mip_reg->off_38 &
- (unsigned long long)~MIP_VALID);
- return status;
-}
-
-int
-es7000_start_cpu(int cpu, unsigned long eip)
-{
- unsigned long vect = 0, psaival = 0;
-
- if (psai == NULL)
- return -1;
-
- vect = ((unsigned long)__pa(eip)/0x1000) << 16;
- psaival = (0x1000000 | vect | cpu);
-
- while (*psai & 0x1000000)
- ;
-
- *psai = psaival;
-
- return 0;
-
-}
-
-int
-es7000_stop_cpu(int cpu)
-{
- int startup;
-
- if (psai == NULL)
- return -1;
-
- startup= (0x1000000 | cpu);
-
- while ((*psai & 0xff00ffff) != startup)
- ;
-
- startup = (*psai & 0xff0000) >> 16;
- *psai &= 0xffffff;
-
- return 0;
-
-}
-
-void __init
-es7000_sw_apic()
-{
- if (es7000_plat) {
- int mip_status;
- struct mip_reg es7000_mip_reg;
-
- printk("ES7000: Enabling APIC mode.\n");
- memset(&es7000_mip_reg, 0, sizeof(struct mip_reg));
- es7000_mip_reg.off_0 = MIP_SW_APIC;
- es7000_mip_reg.off_38 = (MIP_VALID);
- while ((mip_status = es7000_mip_write(&es7000_mip_reg)) != 0)
- printk("es7000_sw_apic: command failed, status = %x\n",
- mip_status);
- return;
- }
-}
+++ /dev/null
-/*
- * Machine specific setup for es7000
- */
-
-#include <linux/config.h>
-#include <linux/smp.h>
-#include <linux/init.h>
-#include <linux/irq.h>
-#include <linux/interrupt.h>
-#include <asm/acpi.h>
-#include <asm/arch_hooks.h>
-
-/**
- * pre_intr_init_hook - initialisation prior to setting up interrupt vectors
- *
- * Description:
- * Perform any necessary interrupt initialisation prior to setting up
- * the "ordinary" interrupt call gates. For legacy reasons, the ISA
- * interrupts should be initialised here if the machine emulates a PC
- * in any way.
- **/void __init pre_intr_init_hook(void)
-{
- init_ISA_irqs();
-}
-
-/*
- * IRQ2 is cascade interrupt to second interrupt controller
- */
-static struct irqaction irq2 = { no_action, 0, 0, "cascade", NULL, NULL};
-
-/**
- * intr_init_hook - post gate setup interrupt initialisation
- *
- * Description:
- * Fill in any interrupts that may have been left out by the general
- * init_IRQ() routine. interrupts having to do with the machine rather
- * than the devices on the I/O bus (like APIC interrupts in intel MP
- * systems) are started here.
- **/
-void __init intr_init_hook(void)
-{
-#ifdef CONFIG_X86_LOCAL_APIC
- apic_intr_init();
-#endif
-
- if (!acpi_ioapic)
- setup_irq(2, &irq2);
-}
-
-/**
- * pre_setup_arch_hook - hook called prior to any setup_arch() execution
- *
- * Description:
- * generally used to activate any machine specific identification
- * routines that may be needed before setup_arch() runs. On VISWS
- * this is used to get the board revision and type.
- **/
-void __init pre_setup_arch_hook(void)
-{
-}
-
-/**
- * trap_init_hook - initialise system specific traps
- *
- * Description:
- * Called as the final act of trap_init(). Used in VISWS to initialise
- * the various board specific APIC traps.
- **/
-void __init trap_init_hook(void)
-{
-}
-
-static struct irqaction irq0 = { timer_interrupt, SA_INTERRUPT, 0, "timer", NULL, NULL};
-
-/**
- * time_init_hook - do any specific initialisations for the system timer.
- *
- * Description:
- * Must plug the system timer interrupt source at HZ into the IRQ listed
- * in irq_vectors.h:TIMER_IRQ
- **/
-void __init time_init_hook(void)
-{
- setup_irq(0, &irq0);
-}
-
-#ifdef CONFIG_MCA
-/**
- * mca_nmi_hook - hook into MCA specific NMI chain
- *
- * Description:
- * The MCA (Microchannel Arcitecture) has an NMI chain for NMI sources
- * along the MCA bus. Use this to hook into that chain if you will need
- * it.
- **/
-void __init mca_nmi_hook(void)
-{
- /* If I recall correctly, there's a whole bunch of other things that
- * we can do to check for NMI problems, but that's all I know about
- * at the moment.
- */
-
- printk("NMI generated from unknown source!\n");
-}
-
-#endif
+++ /dev/null
-/*
- * arch/i386/mach-generic/topology.c - Populate driverfs with topology information
- *
- * Written by: Matthew Dobson, IBM Corporation
- * Original Code: Paul Dorwin, IBM Corporation, Patrick Mochel, OSDL
- *
- * Copyright (C) 2002, IBM Corp.
- *
- * All rights reserved.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
- * NON INFRINGEMENT. See the GNU General Public License for more
- * details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- *
- * Send feedback to <colpatch@us.ibm.com>
- */
-#include <linux/init.h>
-#include <linux/smp.h>
-#include <asm/cpu.h>
-
-struct i386_cpu cpu_devices[NR_CPUS];
-
-#ifdef CONFIG_NUMA
-#include <linux/mmzone.h>
-#include <asm/node.h>
-
-struct i386_node node_devices[MAX_NUMNODES];
-
-static int __init topology_init(void)
-{
- int i;
-
- for (i = 0; i < num_online_nodes(); i++)
- arch_register_node(i);
- for (i = 0; i < NR_CPUS; i++)
- if (cpu_possible(i)) arch_register_cpu(i);
- return 0;
-}
-
-#else /* !CONFIG_NUMA */
-
-static int __init topology_init(void)
-{
- int i;
-
- for (i = 0; i < NR_CPUS; i++)
- if (cpu_possible(i)) arch_register_cpu(i);
- return 0;
-}
-
-#endif /* CONFIG_NUMA */
-
-subsys_initcall(topology_init);
+++ /dev/null
-/*
- * This file contains the HP SKI Simulator PMU register description tables
- * and pmc checkers used by perfmon.c.
- *
- * Copyright (C) 2002-2003 Hewlett Packard Co
- * Stephane Eranian <eranian@hpl.hp.com>
- *
- * File mostly contributed by Ian Wienand <ianw@gelato.unsw.edu.au>
- *
- * This file is included as a dummy template so the kernel does not
- * try to initalize registers the simulator can't handle.
- *
- * Note the simulator does not (currently) implement these registers, i.e.,
- * they do not count anything. But you can read/write them.
- */
-
-#define RDEP(x) (1UL<<(x))
-
-#ifndef CONFIG_IA64_HP_SIM
-#error "This file should only be included for the HP Simulator"
-#endif
-
-static pfm_reg_desc_t pfm_hpsim_pmc_desc[PMU_MAX_PMCS]={
-/* pmc0 */ { PFM_REG_CONTROL , 0, 0x1UL, -1UL, NULL, NULL, {0UL, 0UL, 0UL, 0UL}, {0UL,0UL, 0UL, 0UL}},
-/* pmc1 */ { PFM_REG_CONTROL , 0, 0x0UL, -1UL, NULL, NULL, {0UL, 0UL, 0UL, 0UL}, {0UL,0UL, 0UL, 0UL}},
-/* pmc2 */ { PFM_REG_CONTROL , 0, 0x0UL, -1UL, NULL, NULL, {0UL, 0UL, 0UL, 0UL}, {0UL,0UL, 0UL, 0UL}},
-/* pmc3 */ { PFM_REG_CONTROL , 0, 0x0UL, -1UL, NULL, NULL, {0UL, 0UL, 0UL, 0UL}, {0UL,0UL, 0UL, 0UL}},
-/* pmc4 */ { PFM_REG_COUNTING, 0, 0x0UL, -1UL, NULL, NULL, {RDEP(4), 0UL, 0UL, 0UL}, {0UL,0UL, 0UL, 0UL}},
-/* pmc5 */ { PFM_REG_COUNTING, 0, 0x0UL, -1UL, NULL, NULL, {RDEP(5), 0UL, 0UL, 0UL}, {0UL,0UL, 0UL, 0UL}},
-/* pmc6 */ { PFM_REG_COUNTING, 0, 0x0UL, -1UL, NULL, NULL, {RDEP(6), 0UL, 0UL, 0UL}, {0UL,0UL, 0UL, 0UL}},
-/* pmc7 */ { PFM_REG_COUNTING, 0, 0x0UL, -1UL, NULL, NULL, {RDEP(7), 0UL, 0UL, 0UL}, {0UL,0UL, 0UL, 0UL}},
-/* pmc8 */ { PFM_REG_COUNTING, 0, 0x0UL, -1UL, NULL, NULL, {RDEP(8), 0UL, 0UL, 0UL}, {0UL,0UL, 0UL, 0UL}},
-/* pmc9 */ { PFM_REG_COUNTING, 0, 0x0UL, -1UL, NULL, NULL, {RDEP(9), 0UL, 0UL, 0UL}, {0UL,0UL, 0UL, 0UL}},
-/* pmc10 */ { PFM_REG_COUNTING, 0, 0x0UL, -1UL, NULL, NULL, {RDEP(10), 0UL, 0UL, 0UL}, {0UL,0UL, 0UL, 0UL}},
-/* pmc11 */ { PFM_REG_COUNTING, 0, 0x0UL, -1UL, NULL, NULL, {RDEP(11), 0UL, 0UL, 0UL}, {0UL,0UL, 0UL, 0UL}},
-/* pmc12 */ { PFM_REG_COUNTING, 0, 0x0UL, -1UL, NULL, NULL, {RDEP(12), 0UL, 0UL, 0UL}, {0UL,0UL, 0UL, 0UL}},
-/* pmc13 */ { PFM_REG_COUNTING, 0, 0x0UL, -1UL, NULL, NULL, {RDEP(13), 0UL, 0UL, 0UL}, {0UL,0UL, 0UL, 0UL}},
-/* pmc14 */ { PFM_REG_COUNTING, 0, 0x0UL, -1UL, NULL, NULL, {RDEP(14), 0UL, 0UL, 0UL}, {0UL,0UL, 0UL, 0UL}},
-/* pmc15 */ { PFM_REG_COUNTING, 0, 0x0UL, -1UL, NULL, NULL, {RDEP(15), 0UL, 0UL, 0UL}, {0UL,0UL, 0UL, 0UL}},
- { PFM_REG_END , 0, 0x0UL, -1UL, NULL, NULL, {0,}, {0,}}, /* end marker */
-};
-
-static pfm_reg_desc_t pfm_hpsim_pmd_desc[PMU_MAX_PMDS]={
-/* pmd0 */ { PFM_REG_BUFFER, 0, 0x0UL, -1UL, NULL, NULL, {0UL,0UL, 0UL, 0UL}, {0UL,0UL, 0UL, 0UL}},
-/* pmd1 */ { PFM_REG_BUFFER, 0, 0x0UL, -1UL, NULL, NULL, {0UL,0UL, 0UL, 0UL}, {0UL,0UL, 0UL, 0UL}},
-/* pmd2 */ { PFM_REG_BUFFER, 0, 0x0UL, -1UL, NULL, NULL, {0UL,0UL, 0UL, 0UL}, {0UL,0UL, 0UL, 0UL}},
-/* pmd3 */ { PFM_REG_BUFFER, 0, 0x0UL, -1UL, NULL, NULL, {0UL,0UL, 0UL, 0UL}, {0UL,0UL, 0UL, 0UL}},
-/* pmd4 */ { PFM_REG_COUNTING, 0, 0x0UL, -1UL, NULL, NULL, {0UL,0UL, 0UL, 0UL}, {RDEP(4),0UL, 0UL, 0UL}},
-/* pmd5 */ { PFM_REG_COUNTING, 0, 0x0UL, -1UL, NULL, NULL, {0UL,0UL, 0UL, 0UL}, {RDEP(5),0UL, 0UL, 0UL}},
-/* pmd6 */ { PFM_REG_COUNTING, 0, 0x0UL, -1UL, NULL, NULL, {0UL,0UL, 0UL, 0UL}, {RDEP(6),0UL, 0UL, 0UL}},
-/* pmd7 */ { PFM_REG_COUNTING, 0, 0x0UL, -1UL, NULL, NULL, {0UL,0UL, 0UL, 0UL}, {RDEP(7),0UL, 0UL, 0UL}},
-/* pmd8 */ { PFM_REG_COUNTING, 0, 0x0UL, -1UL, NULL, NULL, {0UL,0UL, 0UL, 0UL}, {RDEP(8),0UL, 0UL, 0UL}},
-/* pmd9 */ { PFM_REG_COUNTING, 0, 0x0UL, -1UL, NULL, NULL, {0UL,0UL, 0UL, 0UL}, {RDEP(9),0UL, 0UL, 0UL}},
-/* pmd10 */ { PFM_REG_COUNTING, 0, 0x0UL, -1UL, NULL, NULL, {0UL,0UL, 0UL, 0UL}, {RDEP(10),0UL, 0UL, 0UL}},
-/* pmd11 */ { PFM_REG_COUNTING, 0, 0x0UL, -1UL, NULL, NULL, {0UL,0UL, 0UL, 0UL}, {RDEP(11),0UL, 0UL, 0UL}},
-/* pmd12 */ { PFM_REG_COUNTING, 0, 0x0UL, -1UL, NULL, NULL, {0UL,0UL, 0UL, 0UL}, {RDEP(12),0UL, 0UL, 0UL}},
-/* pmd13 */ { PFM_REG_COUNTING, 0, 0x0UL, -1UL, NULL, NULL, {0UL,0UL, 0UL, 0UL}, {RDEP(13),0UL, 0UL, 0UL}},
-/* pmd14 */ { PFM_REG_COUNTING, 0, 0x0UL, -1UL, NULL, NULL, {0UL,0UL, 0UL, 0UL}, {RDEP(14),0UL, 0UL, 0UL}},
-/* pmd15 */ { PFM_REG_COUNTING, 0, 0x0UL, -1UL, NULL, NULL, {0UL,0UL, 0UL, 0UL}, {RDEP(15),0UL, 0UL, 0UL}},
- { PFM_REG_END , 0, 0x0UL, -1UL, NULL, NULL, {0,}, {0,}}, /* end marker */
-};
-
-/*
- * impl_pmcs, impl_pmds are computed at runtime to minimize errors!
- */
-static pmu_config_t pmu_conf={
- .pmu_name = "hpsim",
- .pmu_family = 0x7, /* ski emulator reports as Itanium */
- .enabled = 0,
- .ovfl_val = (1UL << 32) - 1,
- .num_ibrs = 0, /* does not use */
- .num_dbrs = 0, /* does not use */
- .pmd_desc = pfm_hpsim_pmd_desc,
- .pmc_desc = pfm_hpsim_pmc_desc
-};
+++ /dev/null
-/*
- * PowerPC version derived from arch/arm/mm/consistent.c
- * Copyright (C) 2001 Dan Malek (dmalek@jlc.net)
- *
- * arch/ppc/mm/cachemap.c
- *
- * Copyright (C) 2000 Russell King
- *
- * Consistent memory allocators. Used for DMA devices that want to
- * share uncached memory with the processor core. The function return
- * is the virtual address and 'dma_handle' is the physical address.
- * Mostly stolen from the ARM port, with some changes for PowerPC.
- * -- Dan
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
-
-#include <linux/config.h>
-#include <linux/module.h>
-#include <linux/signal.h>
-#include <linux/sched.h>
-#include <linux/kernel.h>
-#include <linux/errno.h>
-#include <linux/string.h>
-#include <linux/types.h>
-#include <linux/ptrace.h>
-#include <linux/mman.h>
-#include <linux/mm.h>
-#include <linux/swap.h>
-#include <linux/stddef.h>
-#include <linux/vmalloc.h>
-#include <linux/init.h>
-#include <linux/delay.h>
-#include <linux/bootmem.h>
-#include <linux/highmem.h>
-#include <linux/dma-mapping.h>
-
-#include <asm/pgalloc.h>
-#include <asm/prom.h>
-#include <asm/io.h>
-#include <asm/hardirq.h>
-#include <asm/mmu_context.h>
-#include <asm/pgtable.h>
-#include <asm/mmu.h>
-#include <asm/uaccess.h>
-#include <asm/smp.h>
-#include <asm/machdep.h>
-
-int map_page(unsigned long va, phys_addr_t pa, int flags);
-
-/* This function will allocate the requested contiguous pages and
- * map them into the kernel's vmalloc() space. This is done so we
- * get unique mapping for these pages, outside of the kernel's 1:1
- * virtual:physical mapping. This is necessary so we can cover large
- * portions of the kernel with single large page TLB entries, and
- * still get unique uncached pages for consistent DMA.
- */
-void *consistent_alloc(int gfp, size_t size, dma_addr_t *dma_handle)
-{
- int order, err;
- struct page *page, *free, *end;
- phys_addr_t pa;
- unsigned long flags, offset;
- struct vm_struct *area = NULL;
- unsigned long va = 0;
-
- BUG_ON(in_interrupt());
-
- /* Only allocate page size areas */
- size = PAGE_ALIGN(size);
- order = get_order(size);
-
- free = page = alloc_pages(gfp, order);
- if (! page)
- return NULL;
-
- pa = page_to_phys(page);
- *dma_handle = page_to_bus(page);
- end = page + (1 << order);
-
- /*
- * we need to ensure that there are no cachelines in use,
- * or worse dirty in this area.
- */
- invalidate_dcache_range((unsigned long)page_address(page),
- (unsigned long)page_address(page) + size);
-
- /*
- * alloc_pages() expects the block to be handled as a unit, so
- * it only sets the page count on the first page. We set the
- * counts on each page so they can be freed individually
- */
- for (; page < end; page++)
- set_page_count(page, 1);
-
-
- /* Allocate some common virtual space to map the new pages*/
- area = get_vm_area(size, VM_ALLOC);
- if (! area)
- goto out;
-
- va = (unsigned long) area->addr;
-
- flags = _PAGE_KERNEL | _PAGE_NO_CACHE;
-
- for (offset = 0; offset < size; offset += PAGE_SIZE) {
- err = map_page(va+offset, pa+offset, flags);
- if (err) {
- vfree((void *)va);
- va = 0;
- goto out;
- }
-
- free++;
- }
-
- out:
- /* Free pages which weren't mapped */
- for (; free < end; free++) {
- __free_page(free);
- }
-
- return (void *)va;
-}
-
-/*
- * free page(s) as defined by the above mapping.
- */
-void consistent_free(void *vaddr)
-{
- BUG_ON(in_interrupt());
- vfree(vaddr);
-}
-
-/*
- * make an area consistent.
- */
-void consistent_sync(void *vaddr, size_t size, int direction)
-{
- unsigned long start = (unsigned long)vaddr;
- unsigned long end = start + size;
-
- switch (direction) {
- case DMA_NONE:
- BUG();
- case DMA_FROM_DEVICE: /* invalidate only */
- invalidate_dcache_range(start, end);
- break;
- case DMA_TO_DEVICE: /* writeback only */
- clean_dcache_range(start, end);
- break;
- case DMA_BIDIRECTIONAL: /* writeback and invalidate */
- flush_dcache_range(start, end);
- break;
- }
-}
-
-/*
- * consistent_sync_page make a page are consistent. identical
- * to consistent_sync, but takes a struct page instead of a virtual address
- */
-
-void consistent_sync_page(struct page *page, unsigned long offset,
- size_t size, int direction)
-{
- unsigned long start;
-
- start = (unsigned long)page_address(page) + offset;
- consistent_sync((void *)start, size, direction);
-}
-
-EXPORT_SYMBOL(consistent_sync_page);
+++ /dev/null
-#
-# Makefile for the linux kernel.
-#
-
-obj-y := ocp.o ocp-driver.o ocp-probe.o
-
+++ /dev/null
-/*
- * FILE NAME: ocp-driver.c
- *
- * BRIEF MODULE DESCRIPTION:
- * driver callback, id matching and registration
- * Based on drivers/pci/pci-driver, Copyright (c) 1997--1999 Martin Mares
- *
- * Maintained by: Armin <akuster@mvista.com>
- *
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by the
- * Free Software Foundation; either version 2 of the License, or (at your
- * option) any later version.
- *
- * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
- * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
- * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
- * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
- * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
- * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
- * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
- * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
- * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- *
- * You should have received a copy of the GNU General Public License along
- * with this program; if not, write to the Free Software Foundation, Inc.,
- * 675 Mass Ave, Cambridge, MA 02139, USA.
- */
-
-#include <asm/ocp.h>
-#include <linux/module.h>
-#include <linux/init.h>
-
-/*
- * Registration of OCP drivers and handling of hot-pluggable devices.
- */
-
-static int
-ocp_device_probe(struct device *dev)
-{
- int error = 0;
- struct ocp_driver *drv;
- struct ocp_device *ocp_dev;
-
- drv = to_ocp_driver(dev->driver);
- ocp_dev = to_ocp_dev(dev);
-
- if (drv->probe) {
- error = drv->probe(ocp_dev);
- DBG("probe return code %d\n", error);
- if (error >= 0) {
- ocp_dev->driver = drv;
- error = 0;
- }
- }
- return error;
-}
-
-static int
-ocp_device_remove(struct device *dev)
-{
- struct ocp_device *ocp_dev = to_ocp_dev(dev);
-
- if (ocp_dev->driver) {
- if (ocp_dev->driver->remove)
- ocp_dev->driver->remove(ocp_dev);
- ocp_dev->driver = NULL;
- }
- return 0;
-}
-
-static int
-ocp_device_suspend(struct device *dev, u32 state, u32 level)
-{
- struct ocp_device *ocp_dev = to_ocp_dev(dev);
-
- int error = 0;
-
- if (ocp_dev->driver) {
- if (level == SUSPEND_SAVE_STATE && ocp_dev->driver->save_state)
- error = ocp_dev->driver->save_state(ocp_dev, state);
- else if (level == SUSPEND_POWER_DOWN
- && ocp_dev->driver->suspend)
- error = ocp_dev->driver->suspend(ocp_dev, state);
- }
- return error;
-}
-
-static int
-ocp_device_resume(struct device *dev, u32 level)
-{
- struct ocp_device *ocp_dev = to_ocp_dev(dev);
-
- if (ocp_dev->driver) {
- if (level == RESUME_POWER_ON && ocp_dev->driver->resume)
- ocp_dev->driver->resume(ocp_dev);
- }
- return 0;
-}
-
-/**
- * ocp_bus_match - Works out whether an OCP device matches any
- * of the IDs listed for a given OCP driver.
- * @dev: the generic device struct for the OCP device
- * @drv: the generic driver struct for the OCP driver
- *
- * Used by a driver to check whether a OCP device present in the
- * system is in its list of supported devices. Returns 1 for a
- * match, or 0 if there is no match.
- */
-static int
-ocp_bus_match(struct device *dev, struct device_driver *drv)
-{
- struct ocp_device *ocp_dev = to_ocp_dev(dev);
- struct ocp_driver *ocp_drv = to_ocp_driver(drv);
- const struct ocp_device_id *ids = ocp_drv->id_table;
-
- if (!ids)
- return 0;
-
- while (ids->vendor || ids->device) {
- if ((ids->vendor == OCP_ANY_ID
- || ids->vendor == ocp_dev->vendor)
- && (ids->device == OCP_ANY_ID
- || ids->device == ocp_dev->device)) {
- DBG("Bus match -vendor:%x device:%x\n", ids->vendor,
- ids->device);
- return 1;
- }
- ids++;
- }
- return 0;
-}
-
-struct bus_type ocp_bus_type = {
- .name = "ocp",
- .match = ocp_bus_match,
-};
-
-static int __init
-ocp_driver_init(void)
-{
- return bus_register(&ocp_bus_type);
-}
-
-postcore_initcall(ocp_driver_init);
-
-/**
- * ocp_register_driver - register a new ocp driver
- * @drv: the driver structure to register
- *
- * Adds the driver structure to the list of registered drivers
- * Returns the number of ocp devices which were claimed by the driver
- * during registration. The driver remains registered even if the
- * return value is zero.
- */
-int
-ocp_register_driver(struct ocp_driver *drv)
-{
- int count = 0;
-
- /* initialize common driver fields */
- drv->driver.name = drv->name;
- drv->driver.bus = &ocp_bus_type;
- drv->driver.probe = ocp_device_probe;
- drv->driver.resume = ocp_device_resume;
- drv->driver.suspend = ocp_device_suspend;
- drv->driver.remove = ocp_device_remove;
-
- /* register with core */
- count = driver_register(&drv->driver);
- return count ? count : 1;
-}
-
-/**
- * ocp_unregister_driver - unregister a ocp driver
- * @drv: the driver structure to unregister
- *
- * Deletes the driver structure from the list of registered OCP drivers,
- * gives it a chance to clean up by calling its remove() function for
- * each device it was responsible for, and marks those devices as
- * driverless.
- */
-
-void
-ocp_unregister_driver(struct ocp_driver *drv)
-{
- driver_unregister(&drv->driver);
-}
-
-EXPORT_SYMBOL(ocp_register_driver);
-EXPORT_SYMBOL(ocp_unregister_driver);
-EXPORT_SYMBOL(ocp_bus_type);
+++ /dev/null
-/*
- * FILE NAME: ocp-probe.c
- *
- * BRIEF MODULE DESCRIPTION:
- * Device scanning & bus set routines
- * Based on drivers/pci/probe, Copyright (c) 1997--1999 Martin Mares
- *
- * Maintained by: Armin <akuster@mvista.com>
- *
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by the
- * Free Software Foundation; either version 2 of the License, or (at your
- * option) any later version.
- *
- * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
- * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
- * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
- * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
- * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
- * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
- * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
- * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
- * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- *
- * You should have received a copy of the GNU General Public License along
- * with this program; if not, write to the Free Software Foundation, Inc.,
- * 675 Mass Ave, Cambridge, MA 02139, USA.
- */
-
-#include <linux/init.h>
-#include <linux/slab.h>
-#include <linux/module.h>
-#include <linux/device.h>
-#include <asm/ocp.h>
-
-LIST_HEAD(ocp_devices);
-struct device *ocp_bus;
-
-static struct ocp_device * __devinit
-ocp_setup_dev(struct ocp_def *odef, unsigned int index)
-{
- struct ocp_device *dev;
-
- dev = kmalloc(sizeof(*dev), GFP_KERNEL);
- if (!dev)
- return NULL;
- memset(dev, 0, sizeof(*dev));
-
- dev->vendor = odef->vendor;
- dev->device = odef->device;
- dev->num = ocp_get_num(dev->device);
- dev->paddr = odef->paddr;
- dev->irq = odef->irq;
- dev->pm = odef->pm;
- dev->current_state = 4;
-
- sprintf(dev->name, "OCP device %04x:%04x", dev->vendor, dev->device);
-
- DBG("%s %s 0x%lx irq:%d pm:0x%lx \n", dev->slot_name, dev->name,
- (unsigned long) dev->paddr, dev->irq, dev->pm);
-
- /* now put in global tree */
- sprintf(dev->dev.bus_id, "%d", index);
- dev->dev.parent = ocp_bus;
- dev->dev.bus = &ocp_bus_type;
- device_register(&dev->dev);
-
- return dev;
-}
-
-static struct device * __devinit ocp_alloc_primary_bus(void)
-{
- struct device *b;
-
- b = kmalloc(sizeof(struct device), GFP_KERNEL);
- if (b == NULL)
- return NULL;
- memset(b, 0, sizeof(struct device));
- strcpy(b->bus_id, "ocp");
-
- device_register(b);
-
- return b;
-}
-
-void __devinit ocp_setup_devices(struct ocp_def *odef)
-{
- int index;
- struct ocp_device *dev;
-
- if (ocp_bus == NULL)
- ocp_bus = ocp_alloc_primary_bus();
- for (index = 0; odef->vendor != OCP_VENDOR_INVALID; ++index, ++odef) {
- dev = ocp_setup_dev(odef, index);
- if (dev != NULL)
- list_add_tail(&dev->global_list, &ocp_devices);
- }
-}
-
-extern struct ocp_def core_ocp[];
-
-static int __init
-ocparch_init(void)
-{
- ocp_setup_devices(core_ocp);
- return 0;
-}
-
-subsys_initcall(ocparch_init);
-
-EXPORT_SYMBOL(ocp_devices);
+++ /dev/null
-/*
- * ocp.c
- *
- * The is drived from pci.c
- *
- * Current Maintainer
- * Armin Kuster akuster@dslextreme.com
- * Jan, 2002
- *
- *
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by the
- * Free Software Foundation; either version 2 of the License, or (at your
- * option) any later version.
- *
- * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
- * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
- * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
- * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
- * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
- * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
- * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
- * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
- * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- *
- * You should have received a copy of the GNU General Public License along
- * with this program; if not, write to the Free Software Foundation, Inc.,
- * 675 Mass Ave, Cambridge, MA 02139, USA.
- */
-
-#include <linux/list.h>
-#include <linux/init.h>
-#include <linux/module.h>
-#include <linux/config.h>
-#include <linux/stddef.h>
-#include <linux/slab.h>
-#include <linux/types.h>
-#include <asm/io.h>
-#include <asm/ocp.h>
-#include <asm/errno.h>
-
-/**
- * ocp_get_num - This determines how many OCP devices of a given
- * device are registered
- * @device: OCP device such as HOST, PCI, GPT, UART, OPB, IIC, GPIO, EMAC, ZMII,
- *
- * The routine returns the number that devices which is registered
- */
-unsigned int ocp_get_num(unsigned int device)
-{
- unsigned int count = 0;
- struct ocp_device *ocp;
- struct list_head *ocp_l;
-
- list_for_each(ocp_l, &ocp_devices) {
- ocp = list_entry(ocp_l, struct ocp_device, global_list);
- if (device == ocp->device)
- count++;
- }
- return count;
-}
-
-/**
- * ocp_get_dev - get ocp driver pointer for ocp device and instance of it
- * @device: OCP device such as PCI, GPT, UART, OPB, IIC, GPIO, EMAC, ZMII
- * @dev_num: ocp device number whos paddr you want
- *
- * The routine returns ocp device pointer
- * in list based on device and instance of that device
- *
- */
-struct ocp_device *
-ocp_get_dev(unsigned int device, int dev_num)
-{
- struct ocp_device *ocp;
- struct list_head *ocp_l;
- int count = 0;
-
- list_for_each(ocp_l, &ocp_devices) {
- ocp = list_entry(ocp_l, struct ocp_device, global_list);
- if (device == ocp->device) {
- if (dev_num == count)
- return ocp;
- count++;
- }
- }
- return NULL;
-}
-
-EXPORT_SYMBOL(ocp_get_dev);
-EXPORT_SYMBOL(ocp_get_num);
-
-#ifdef CONFIG_PM
-int ocp_generic_suspend(struct ocp_device *pdev, u32 state)
-{
- ocp_force_power_off(pdev);
- return 0;
-}
-
-int ocp_generic_resume(struct ocp_device *pdev)
-{
- ocp_force_power_on(pdev);
-}
-
-EXPORT_SYMBOL(ocp_generic_suspend);
-EXPORT_SYMBOL(ocp_generic_resume);
-#endif /* CONFIG_PM */
+++ /dev/null
-/*
- * arch/s390/lib/memset.S
- * S390 fast memset routine
- *
- * S390 version
- * Copyright (C) 1999 IBM Deutschland Entwicklung GmbH, IBM Corporation
- * Author(s): Martin Schwidefsky (schwidefsky@de.ibm.com),
- */
-
-/*
- * R2 = address to memory area
- * R3 = byte to fill memory with
- * R4 = number of bytes to fill
- */
- .globl memset
-memset:
- LTR 4,4
- JZ memset_end
- LR 0,2 # save pointer to memory area
- LR 1,3 # move pad byte to R1
- LR 3,4
- SR 4,4 # no source for MVCLE, only a pad byte
- SR 5,5
- MVCLE 2,4,0(1) # thats it, MVCLE is your friend
- JO .-4
- LR 2,0 # return pointer to mem.
-memset_end:
- BR 14
-
-
+++ /dev/null
-/*
- * arch/s390/lib/memset.S
- * S390 fast memset routine
- *
- * S390 version
- * Copyright (C) 1999 IBM Deutschland Entwicklung GmbH, IBM Corporation
- * Author(s): Martin Schwidefsky (schwidefsky@de.ibm.com),
- */
-
-/*
- * R2 = address to memory area
- * R3 = byte to fill memory with
- * R4 = number of bytes to fill
- */
- .globl memset
-memset:
- LTGR 4,4
- JZ memset_end
- LGR 0,2 # save pointer to memory area
- LGR 1,3 # move pad byte to R1
- LGR 3,4
- SGR 4,4 # no source for MVCLE, only a pad byte
- SGR 5,5
- MVCLE 2,4,0(1) # thats it, MVCLE is your friend
- JO .-4
- LGR 2,0 # return pointer to mem.
-memset_end:
- BR 14
-
-
+++ /dev/null
-/*
- * arch/s390/lib/strcmp.S
- * S390 strcmp routine
- *
- * S390 version
- * Copyright (C) 1999 IBM Deutschland Entwicklung GmbH, IBM Corporation
- * Author(s): Martin Schwidefsky (schwidefsky@de.ibm.com),
- */
-
-/*
- * R2 = address of compare string
- * R3 = address of test string
- */
- .globl strcmp
-strcmp:
- SR 0,0
- SR 1,1
- CLST 2,3
- JO .-4
- JE strcmp_equal
- IC 0,0(3)
- IC 1,0(2)
- SR 1,0
-strcmp_equal:
- LR 2,1
- BR 14
-
+++ /dev/null
-/*
- * arch/s390/lib/strcmp.S
- * S390 strcmp routine
- *
- * S390 version
- * Copyright (C) 1999 IBM Deutschland Entwicklung GmbH, IBM Corporation
- * Author(s): Martin Schwidefsky (schwidefsky@de.ibm.com),
- */
-
-/*
- * R2 = address of compare string
- * R3 = address of test string
- */
- .globl strcmp
-strcmp:
- SGR 0,0
- SGR 1,1
- CLST 2,3
- JO .-4
- JE strcmp_equal
- IC 0,0(3)
- IC 1,0(2)
- SGR 1,0
-strcmp_equal:
- LGR 2,1
- BR 14
-
+++ /dev/null
-/*
- * arch/s390/kernel/strcpy.S
- * S390 strcpy routine
- *
- * S390 version
- * Copyright (C) 2004 IBM Deutschland Entwicklung GmbH, IBM Corporation
- * Author(s): Martin Schwidefsky (schwidefsky@de.ibm.com),
- */
-
-/*
- * R2 = address of destination
- * R3 = address of source string
- */
- .globl strcpy
-strcpy:
- sr %r0,%r0
-0: mvst %r2,%r3
- jo 0b
- br %r14
-
+++ /dev/null
-/*
- * arch/s390/kernel/strcpy.S
- * S390 strcpy routine
- *
- * S390 version
- * Copyright (C) 2004 IBM Deutschland Entwicklung GmbH, IBM Corporation
- * Author(s): Martin Schwidefsky (schwidefsky@de.ibm.com),
- */
-
-/*
- * R2 = address of destination
- * R3 = address of source string
- */
- .globl strcpy
-strcpy:
- sgr %r0,%r0
-0: mvst %r2,%r3
- jo 0b
- br %r14
-
+++ /dev/null
-/*
- * arch/s390/kernel/strncpy.S
- * S390 strncpy routine
- *
- * S390 version
- * Copyright (C) 1999 IBM Deutschland Entwicklung GmbH, IBM Corporation
- * Author(s): Martin Schwidefsky (schwidefsky@de.ibm.com),
- */
-
-/*
- * R2 = address of destination
- * R3 = address of source string
- * R4 = max number of bytes to copy
- */
- .globl strncpy
-strncpy:
- LR 1,2 # don't touch address in R2
- LTR 4,4
- JZ strncpy_exit # 0 bytes -> nothing to do
- SR 0,0
-strncpy_loop:
- ICM 0,1,0(3) # ICM sets the cc, IC does not
- LA 3,1(3)
- STC 0,0(1)
- LA 1,1(1)
- JZ strncpy_pad # ICM inserted a 0x00
- BRCT 4,strncpy_loop # R4 -= 1, jump to strncpy_loop if > 0
-strncpy_exit:
- BR 14
-strncpy_clear:
- STC 0,0(1)
- LA 1,1(1)
-strncpy_pad:
- BRCT 4,strncpy_clear
- BR 14
+++ /dev/null
-/*
- * arch/s390/kernel/strncpy.S
- * S390 strncpy routine
- *
- * S390 version
- * Copyright (C) 1999 IBM Deutschland Entwicklung GmbH, IBM Corporation
- * Author(s): Martin Schwidefsky (schwidefsky@de.ibm.com),
- */
-
-/*
- * R2 = address of destination
- * R3 = address of source string
- * R4 = max number of bytes to copy
- */
- .globl strncpy
-strncpy:
- LGR 1,2 # don't touch address in R2
- LTR 4,4
- JZ strncpy_exit # 0 bytes -> nothing to do
- SGR 0,0
-strncpy_loop:
- ICM 0,1,0(3) # ICM sets the cc, IC does not
- LA 3,1(3)
- STC 0,0(1)
- LA 1,1(1)
- JZ strncpy_pad # ICM inserted a 0x00
- BRCTG 4,strncpy_loop # R4 -= 1, jump to strncpy_loop if > 0
-strncpy_exit:
- BR 14
-strncpy_clear:
- STC 0,0(1)
- LA 1,1(1)
-strncpy_pad:
- BRCTG 4,strncpy_clear
- BR 14
+++ /dev/null
-#ifndef __COW_H__
-#define __COW_H__
-
-#include <asm/types.h>
-
-#if __BYTE_ORDER == __BIG_ENDIAN
-# define ntohll(x) (x)
-# define htonll(x) (x)
-#elif __BYTE_ORDER == __LITTLE_ENDIAN
-# define ntohll(x) bswap_64(x)
-# define htonll(x) bswap_64(x)
-#else
-#error "__BYTE_ORDER not defined"
-#endif
-
-extern int init_cow_file(int fd, char *cow_file, char *backing_file,
- int sectorsize, int alignment, int *bitmap_offset_out,
- unsigned long *bitmap_len_out, int *data_offset_out);
-
-extern int file_reader(__u64 offset, char *buf, int len, void *arg);
-extern int read_cow_header(int (*reader)(__u64, char *, int, void *),
- void *arg, __u32 *version_out,
- char **backing_file_out, time_t *mtime_out,
- __u64 *size_out, int *sectorsize_out,
- __u32 *align_out, int *bitmap_offset_out);
-
-extern int write_cow_header(char *cow_file, int fd, char *backing_file,
- int sectorsize, int alignment, long long *size);
-
-extern void cow_sizes(int version, __u64 size, int sectorsize, int align,
- int bitmap_offset, unsigned long *bitmap_len_out,
- int *data_offset_out);
-
-#endif
-
-/*
- * ---------------------------------------------------------------------------
- * Local variables:
- * c-file-style: "linux"
- * End:
- */
+++ /dev/null
-#include <stddef.h>
-#include <string.h>
-#include <errno.h>
-#include <unistd.h>
-#include <byteswap.h>
-#include <sys/time.h>
-#include <sys/param.h>
-#include <sys/user.h>
-#include <netinet/in.h>
-
-#include "os.h"
-
-#include "cow.h"
-#include "cow_sys.h"
-
-#define PATH_LEN_V1 256
-
-struct cow_header_v1 {
- int magic;
- int version;
- char backing_file[PATH_LEN_V1];
- time_t mtime;
- __u64 size;
- int sectorsize;
-};
-
-#define PATH_LEN_V2 MAXPATHLEN
-
-struct cow_header_v2 {
- unsigned long magic;
- unsigned long version;
- char backing_file[PATH_LEN_V2];
- time_t mtime;
- __u64 size;
- int sectorsize;
-};
-
-/* Define PATH_LEN_V3 as the usual value of MAXPATHLEN, just hard-code it in
- * case other systems have different values for MAXPATHLEN
- */
-#define PATH_LEN_V3 4096
-
-/* Changes from V2 -
- * PATH_LEN_V3 as described above
- * Explicitly specify field bit lengths for systems with different
- * lengths for the usual C types. Not sure whether char or
- * time_t should be changed, this can be changed later without
- * breaking compatibility
- * Add alignment field so that different alignments can be used for the
- * bitmap and data
- * Add cow_format field to allow for the possibility of different ways
- * of specifying the COW blocks. For now, the only value is 0,
- * for the traditional COW bitmap.
- * Move the backing_file field to the end of the header. This allows
- * for the possibility of expanding it into the padding required
- * by the bitmap alignment.
- * The bitmap and data portions of the file will be aligned as specified
- * by the alignment field. This is to allow COW files to be
- * put on devices with restrictions on access alignments, such as
- * /dev/raw, with a 512 byte alignment restriction. This also
- * allows the data to be more aligned more strictly than on
- * sector boundaries. This is needed for ubd-mmap, which needs
- * the data to be page aligned.
- * Fixed (finally!) the rounding bug
- */
-
-struct cow_header_v3 {
- __u32 magic;
- __u32 version;
- time_t mtime;
- __u64 size;
- __u32 sectorsize;
- __u32 alignment;
- __u32 cow_format;
- char backing_file[PATH_LEN_V3];
-};
-
-/* COW format definitions - for now, we have only the usual COW bitmap */
-#define COW_BITMAP 0
-
-union cow_header {
- struct cow_header_v1 v1;
- struct cow_header_v2 v2;
- struct cow_header_v3 v3;
-};
-
-#define COW_MAGIC 0x4f4f4f4d /* MOOO */
-#define COW_VERSION 3
-
-#define DIV_ROUND(x, len) (((x) + (len) - 1) / (len))
-#define ROUND_UP(x, align) DIV_ROUND(x, align) * (align)
-
-void cow_sizes(int version, __u64 size, int sectorsize, int align,
- int bitmap_offset, unsigned long *bitmap_len_out,
- int *data_offset_out)
-{
- if(version < 3){
- *bitmap_len_out = (size + sectorsize - 1) / (8 * sectorsize);
-
- *data_offset_out = bitmap_offset + *bitmap_len_out;
- *data_offset_out = (*data_offset_out + sectorsize - 1) /
- sectorsize;
- *data_offset_out *= sectorsize;
- }
- else {
- *bitmap_len_out = DIV_ROUND(size, sectorsize);
- *bitmap_len_out = DIV_ROUND(*bitmap_len_out, 8);
-
- *data_offset_out = bitmap_offset + *bitmap_len_out;
- *data_offset_out = ROUND_UP(*data_offset_out, align);
- }
-}
-
-static int absolutize(char *to, int size, char *from)
-{
- char save_cwd[256], *slash;
- int remaining;
-
- if(getcwd(save_cwd, sizeof(save_cwd)) == NULL) {
- cow_printf("absolutize : unable to get cwd - errno = %d\n",
- errno);
- return(-1);
- }
- slash = strrchr(from, '/');
- if(slash != NULL){
- *slash = '\0';
- if(chdir(from)){
- *slash = '/';
- cow_printf("absolutize : Can't cd to '%s' - "
- "errno = %d\n", from, errno);
- return(-1);
- }
- *slash = '/';
- if(getcwd(to, size) == NULL){
- cow_printf("absolutize : unable to get cwd of '%s' - "
- "errno = %d\n", from, errno);
- return(-1);
- }
- remaining = size - strlen(to);
- if(strlen(slash) + 1 > remaining){
- cow_printf("absolutize : unable to fit '%s' into %d "
- "chars\n", from, size);
- return(-1);
- }
- strcat(to, slash);
- }
- else {
- if(strlen(save_cwd) + 1 + strlen(from) + 1 > size){
- cow_printf("absolutize : unable to fit '%s' into %d "
- "chars\n", from, size);
- return(-1);
- }
- strcpy(to, save_cwd);
- strcat(to, "/");
- strcat(to, from);
- }
- chdir(save_cwd);
- return(0);
-}
-
-int write_cow_header(char *cow_file, int fd, char *backing_file,
- int sectorsize, int alignment, long long *size)
-{
- struct cow_header_v3 *header;
- unsigned long modtime;
- int err;
-
- err = cow_seek_file(fd, 0);
- if(err < 0){
- cow_printf("write_cow_header - lseek failed, err = %d\n", -err);
- goto out;
- }
-
- err = -ENOMEM;
- header = cow_malloc(sizeof(*header));
- if(header == NULL){
- cow_printf("Failed to allocate COW V3 header\n");
- goto out;
- }
- header->magic = htonl(COW_MAGIC);
- header->version = htonl(COW_VERSION);
-
- err = -EINVAL;
- if(strlen(backing_file) > sizeof(header->backing_file) - 1){
- cow_printf("Backing file name \"%s\" is too long - names are "
- "limited to %d characters\n", backing_file,
- sizeof(header->backing_file) - 1);
- goto out_free;
- }
-
- if(absolutize(header->backing_file, sizeof(header->backing_file),
- backing_file))
- goto out_free;
-
- err = os_file_modtime(header->backing_file, &modtime);
- if(err < 0){
- cow_printf("Backing file '%s' mtime request failed, "
- "err = %d\n", header->backing_file, -err);
- goto out_free;
- }
-
- err = cow_file_size(header->backing_file, size);
- if(err < 0){
- cow_printf("Couldn't get size of backing file '%s', "
- "err = %d\n", header->backing_file, -err);
- goto out_free;
- }
-
- header->mtime = htonl(modtime);
- header->size = htonll(*size);
- header->sectorsize = htonl(sectorsize);
- header->alignment = htonl(alignment);
- header->cow_format = COW_BITMAP;
-
- err = os_write_file(fd, header, sizeof(*header));
- if(err != sizeof(*header)){
- cow_printf("Write of header to new COW file '%s' failed, "
- "err = %d\n", cow_file, -err);
- goto out_free;
- }
- err = 0;
- out_free:
- cow_free(header);
- out:
- return(err);
-}
-
-int file_reader(__u64 offset, char *buf, int len, void *arg)
-{
- int fd = *((int *) arg);
-
- return(pread(fd, buf, len, offset));
-}
-
-/* XXX Need to sanity-check the values read from the header */
-
-int read_cow_header(int (*reader)(__u64, char *, int, void *), void *arg,
- __u32 *version_out, char **backing_file_out,
- time_t *mtime_out, __u64 *size_out,
- int *sectorsize_out, __u32 *align_out,
- int *bitmap_offset_out)
-{
- union cow_header *header;
- char *file;
- int err, n;
- unsigned long version, magic;
-
- header = cow_malloc(sizeof(*header));
- if(header == NULL){
- cow_printf("read_cow_header - Failed to allocate header\n");
- return(-ENOMEM);
- }
- err = -EINVAL;
- n = (*reader)(0, (char *) header, sizeof(*header), arg);
- if(n < offsetof(typeof(header->v1), backing_file)){
- cow_printf("read_cow_header - short header\n");
- goto out;
- }
-
- magic = header->v1.magic;
- if(magic == COW_MAGIC) {
- version = header->v1.version;
- }
- else if(magic == ntohl(COW_MAGIC)){
- version = ntohl(header->v1.version);
- }
- /* No error printed because the non-COW case comes through here */
- else goto out;
-
- *version_out = version;
-
- if(version == 1){
- if(n < sizeof(header->v1)){
- cow_printf("read_cow_header - failed to read V1 "
- "header\n");
- goto out;
- }
- *mtime_out = header->v1.mtime;
- *size_out = header->v1.size;
- *sectorsize_out = header->v1.sectorsize;
- *bitmap_offset_out = sizeof(header->v1);
- *align_out = *sectorsize_out;
- file = header->v1.backing_file;
- }
- else if(version == 2){
- if(n < sizeof(header->v2)){
- cow_printf("read_cow_header - failed to read V2 "
- "header\n");
- goto out;
- }
- *mtime_out = ntohl(header->v2.mtime);
- *size_out = ntohll(header->v2.size);
- *sectorsize_out = ntohl(header->v2.sectorsize);
- *bitmap_offset_out = sizeof(header->v2);
- *align_out = *sectorsize_out;
- file = header->v2.backing_file;
- }
- else if(version == 3){
- if(n < sizeof(header->v3)){
- cow_printf("read_cow_header - failed to read V2 "
- "header\n");
- goto out;
- }
- *mtime_out = ntohl(header->v3.mtime);
- *size_out = ntohll(header->v3.size);
- *sectorsize_out = ntohl(header->v3.sectorsize);
- *align_out = ntohl(header->v3.alignment);
- *bitmap_offset_out = ROUND_UP(sizeof(header->v3), *align_out);
- file = header->v3.backing_file;
- }
- else {
- cow_printf("read_cow_header - invalid COW version\n");
- goto out;
- }
- err = -ENOMEM;
- *backing_file_out = cow_strdup(file);
- if(*backing_file_out == NULL){
- cow_printf("read_cow_header - failed to allocate backing "
- "file\n");
- goto out;
- }
- err = 0;
- out:
- cow_free(header);
- return(err);
-}
-
-int init_cow_file(int fd, char *cow_file, char *backing_file, int sectorsize,
- int alignment, int *bitmap_offset_out,
- unsigned long *bitmap_len_out, int *data_offset_out)
-{
- __u64 size, offset;
- char zero = 0;
- int err;
-
- err = write_cow_header(cow_file, fd, backing_file, sectorsize,
- alignment, &size);
- if(err)
- goto out;
-
- *bitmap_offset_out = ROUND_UP(sizeof(struct cow_header_v3), alignment);
- cow_sizes(COW_VERSION, size, sectorsize, alignment, *bitmap_offset_out,
- bitmap_len_out, data_offset_out);
-
- offset = *data_offset_out + size - sizeof(zero);
- err = cow_seek_file(fd, offset);
- if(err < 0){
- cow_printf("cow bitmap lseek failed : err = %d\n", -err);
- goto out;
- }
-
- /* does not really matter how much we write it is just to set EOF
- * this also sets the entire COW bitmap
- * to zero without having to allocate it
- */
- err = cow_write_file(fd, &zero, sizeof(zero));
- if(err != sizeof(zero)){
- cow_printf("Write of bitmap to new COW file '%s' failed, "
- "err = %d\n", cow_file, -err);
- err = -EINVAL;
- goto out;
- }
-
- return(0);
-
- out:
- return(err);
-}
-
-/*
- * ---------------------------------------------------------------------------
- * Local variables:
- * c-file-style: "linux"
- * End:
- */
+++ /dev/null
-/*
- * Copyright (C) 2001, 2002 Jeff Dike (jdike@karaya.com)
- * Licensed under the GPL
- */
-
-#ifndef __IRQ_KERN_H__
-#define __IRQ_KERN_H__
-
-#include "linux/interrupt.h"
-
-extern int um_request_irq(unsigned int irq, int fd, int type,
- irqreturn_t (*handler)(int, void *,
- struct pt_regs *),
- unsigned long irqflags, const char * devname,
- void *dev_id);
-
-#endif
-
-/*
- * Overrides for Emacs so that we follow Linus's tabbing style.
- * Emacs will notice this stuff at the end of the file and automatically
- * adjust the settings for this buffer only. This must remain at the end
- * of the file.
- * ---------------------------------------------------------------------------
- * Local variables:
- * c-file-style: "linux"
- * End:
- */
+++ /dev/null
-/*
- * Copyright (C) 2003 Jeff Dike (jdike@addtoit.com)
- * Licensed under the GPL
- */
-
-#ifndef __MEM_KERN_H__
-#define __MEM_KERN_H__
-
-#include "linux/list.h"
-#include "linux/types.h"
-
-struct remapper {
- struct list_head list;
- int (*proc)(int, unsigned long, int, __u64);
-};
-
-extern void register_remapper(struct remapper *info);
-
-#endif
-
-/*
- * Overrides for Emacs so that we follow Linus's tabbing style.
- * Emacs will notice this stuff at the end of the file and automatically
- * adjust the settings for this buffer only. This must remain at the end
- * of the file.
- * ---------------------------------------------------------------------------
- * Local variables:
- * c-file-style: "linux"
- * End:
- */
+++ /dev/null
-/*
- * Copyright (C) 2000 - 2003 Jeff Dike (jdike@addtoit.com)
- * Licensed under the GPL
- */
-
-#include "linux/mm.h"
-#include "linux/ghash.h"
-#include "linux/slab.h"
-#include "linux/vmalloc.h"
-#include "linux/bootmem.h"
-#include "asm/types.h"
-#include "asm/pgtable.h"
-#include "kern_util.h"
-#include "user_util.h"
-#include "mode_kern.h"
-#include "mem.h"
-#include "mem_user.h"
-#include "os.h"
-#include "kern.h"
-#include "init.h"
-
-#if 0
-static pgd_t physmem_pgd[PTRS_PER_PGD];
-
-static struct phys_desc *lookup_mapping(void *addr)
-{
- pgd = &physmem_pgd[pgd_index(addr)];
- if(pgd_none(pgd))
- return(NULL);
-
- pmd = pmd_offset(pgd, addr);
- if(pmd_none(pmd))
- return(NULL);
-
- pte = pte_offset_kernel(pmd, addr);
- return((struct phys_desc *) pte_val(pte));
-}
-
-static struct add_mapping(void *addr, struct phys_desc *new)
-{
-}
-#endif
-
-#define PHYS_HASHSIZE (8192)
-
-struct phys_desc;
-
-DEF_HASH_STRUCTS(virtmem, PHYS_HASHSIZE, struct phys_desc);
-
-struct phys_desc {
- struct virtmem_ptrs virt_ptrs;
- int fd;
- __u64 offset;
- void *virt;
- unsigned long phys;
- struct list_head list;
-};
-
-struct virtmem_table virtmem_hash;
-
-static int virt_cmp(void *virt1, void *virt2)
-{
- return(virt1 != virt2);
-}
-
-static int virt_hash(void *virt)
-{
- unsigned long addr = ((unsigned long) virt) >> PAGE_SHIFT;
- return(addr % PHYS_HASHSIZE);
-}
-
-DEF_HASH(static, virtmem, struct phys_desc, virt_ptrs, void *, virt, virt_cmp,
- virt_hash);
-
-LIST_HEAD(descriptor_mappings);
-
-struct desc_mapping {
- int fd;
- struct list_head list;
- struct list_head pages;
-};
-
-static struct desc_mapping *find_mapping(int fd)
-{
- struct desc_mapping *desc;
- struct list_head *ele;
-
- list_for_each(ele, &descriptor_mappings){
- desc = list_entry(ele, struct desc_mapping, list);
- if(desc->fd == fd)
- return(desc);
- }
-
- return(NULL);
-}
-
-static struct desc_mapping *descriptor_mapping(int fd)
-{
- struct desc_mapping *desc;
-
- desc = find_mapping(fd);
- if(desc != NULL)
- return(desc);
-
- desc = kmalloc(sizeof(*desc), GFP_ATOMIC);
- if(desc == NULL)
- return(NULL);
-
- *desc = ((struct desc_mapping)
- { .fd = fd,
- .list = LIST_HEAD_INIT(desc->list),
- .pages = LIST_HEAD_INIT(desc->pages) });
- list_add(&desc->list, &descriptor_mappings);
-
- return(desc);
-}
-
-int physmem_subst_mapping(void *virt, int fd, __u64 offset, int w)
-{
- struct desc_mapping *fd_maps;
- struct phys_desc *desc;
- unsigned long phys;
- int err;
-
- fd_maps = descriptor_mapping(fd);
- if(fd_maps == NULL)
- return(-ENOMEM);
-
- phys = __pa(virt);
- if(find_virtmem_hash(&virtmem_hash, virt) != NULL)
- panic("Address 0x%p is already substituted\n", virt);
-
- err = -ENOMEM;
- desc = kmalloc(sizeof(*desc), GFP_ATOMIC);
- if(desc == NULL)
- goto out;
-
- *desc = ((struct phys_desc)
- { .virt_ptrs = { NULL, NULL },
- .fd = fd,
- .offset = offset,
- .virt = virt,
- .phys = __pa(virt),
- .list = LIST_HEAD_INIT(desc->list) });
- insert_virtmem_hash(&virtmem_hash, desc);
-
- list_add(&desc->list, &fd_maps->pages);
-
- virt = (void *) ((unsigned long) virt & PAGE_MASK);
- err = os_map_memory(virt, fd, offset, PAGE_SIZE, 1, w, 0);
- if(!err)
- goto out;
-
- remove_virtmem_hash(&virtmem_hash, desc);
- kfree(desc);
- out:
- return(err);
-}
-
-static int physmem_fd = -1;
-
-static void remove_mapping(struct phys_desc *desc)
-{
- void *virt = desc->virt;
- int err;
-
- remove_virtmem_hash(&virtmem_hash, desc);
- list_del(&desc->list);
- kfree(desc);
-
- err = os_map_memory(virt, physmem_fd, __pa(virt), PAGE_SIZE, 1, 1, 0);
- if(err)
- panic("Failed to unmap block device page from physical memory, "
- "errno = %d", -err);
-}
-
-int physmem_remove_mapping(void *virt)
-{
- struct phys_desc *desc;
-
- virt = (void *) ((unsigned long) virt & PAGE_MASK);
- desc = find_virtmem_hash(&virtmem_hash, virt);
- if(desc == NULL)
- return(0);
-
- remove_mapping(desc);
- return(1);
-}
-
-void physmem_forget_descriptor(int fd)
-{
- struct desc_mapping *desc;
- struct phys_desc *page;
- struct list_head *ele, *next;
- __u64 offset;
- void *addr;
- int err;
-
- desc = find_mapping(fd);
- if(desc == NULL)
- return;
-
- list_for_each_safe(ele, next, &desc->pages){
- page = list_entry(ele, struct phys_desc, list);
- offset = page->offset;
- addr = page->virt;
- remove_mapping(page);
- err = os_seek_file(fd, offset);
- if(err)
- panic("physmem_forget_descriptor - failed to seek "
- "to %lld in fd %d, error = %d\n",
- offset, fd, -err);
- err = os_read_file(fd, addr, PAGE_SIZE);
- if(err < 0)
- panic("physmem_forget_descriptor - failed to read "
- "from fd %d to 0x%p, error = %d\n",
- fd, addr, -err);
- }
-
- list_del(&desc->list);
- kfree(desc);
-}
-
-void arch_free_page(struct page *page, int order)
-{
- void *virt;
- int i;
-
- for(i = 0; i < (1 << order); i++){
- virt = __va(page_to_phys(page + i));
- physmem_remove_mapping(virt);
- }
-}
-
-int is_remapped(void *virt)
-{
- return(find_virtmem_hash(&virtmem_hash, virt) != NULL);
-}
-
-/* Changed during early boot */
-unsigned long high_physmem;
-
-extern unsigned long physmem_size;
-
-void *to_virt(unsigned long phys)
-{
- return((void *) uml_physmem + phys);
-}
-
-unsigned long to_phys(void *virt)
-{
- return(((unsigned long) virt) - uml_physmem);
-}
-
-int init_maps(unsigned long physmem, unsigned long iomem, unsigned long highmem)
-{
- struct page *p, *map;
- unsigned long phys_len, phys_pages, highmem_len, highmem_pages;
- unsigned long iomem_len, iomem_pages, total_len, total_pages;
- int i;
-
- phys_pages = physmem >> PAGE_SHIFT;
- phys_len = phys_pages * sizeof(struct page);
-
- iomem_pages = iomem >> PAGE_SHIFT;
- iomem_len = iomem_pages * sizeof(struct page);
-
- highmem_pages = highmem >> PAGE_SHIFT;
- highmem_len = highmem_pages * sizeof(struct page);
-
- total_pages = phys_pages + iomem_pages + highmem_pages;
- total_len = phys_len + iomem_pages + highmem_len;
-
- if(kmalloc_ok){
- map = kmalloc(total_len, GFP_KERNEL);
- if(map == NULL)
- map = vmalloc(total_len);
- }
- else map = alloc_bootmem_low_pages(total_len);
-
- if(map == NULL)
- return(-ENOMEM);
-
- for(i = 0; i < total_pages; i++){
- p = &map[i];
- set_page_count(p, 0);
- SetPageReserved(p);
- INIT_LIST_HEAD(&p->lru);
- }
-
- mem_map = map;
- max_mapnr = total_pages;
- return(0);
-}
-
-struct page *phys_to_page(const unsigned long phys)
-{
- return(&mem_map[phys >> PAGE_SHIFT]);
-}
-
-struct page *__virt_to_page(const unsigned long virt)
-{
- return(&mem_map[__pa(virt) >> PAGE_SHIFT]);
-}
-
-unsigned long page_to_phys(struct page *page)
-{
- return((page - mem_map) << PAGE_SHIFT);
-}
-
-pte_t mk_pte(struct page *page, pgprot_t pgprot)
-{
- pte_t pte;
-
- pte_val(pte) = page_to_phys(page) + pgprot_val(pgprot);
- if(pte_present(pte)) pte_mknewprot(pte_mknewpage(pte));
- return(pte);
-}
-
-/* Changed during early boot */
-static unsigned long kmem_top = 0;
-
-unsigned long get_kmem_end(void)
-{
- if(kmem_top == 0)
- kmem_top = CHOOSE_MODE(kmem_end_tt, kmem_end_skas);
- return(kmem_top);
-}
-
-void map_memory(unsigned long virt, unsigned long phys, unsigned long len,
- int r, int w, int x)
-{
- __u64 offset;
- int fd, err;
-
- fd = phys_mapping(phys, &offset);
- err = os_map_memory((void *) virt, fd, offset, len, r, w, x);
- if(err)
- panic("map_memory(0x%lx, %d, 0x%llx, %ld, %d, %d, %d) failed, "
- "err = %d\n", virt, fd, offset, len, r, w, x, err);
-}
-
-#define PFN_UP(x) (((x) + PAGE_SIZE-1) >> PAGE_SHIFT)
-
-void setup_physmem(unsigned long start, unsigned long reserve_end,
- unsigned long len, unsigned long highmem)
-{
- unsigned long reserve = reserve_end - start;
- int pfn = PFN_UP(__pa(reserve_end));
- int delta = (len - reserve) >> PAGE_SHIFT;
- int err, offset, bootmap_size;
-
- physmem_fd = create_mem_file(len + highmem);
-
- offset = uml_reserved - uml_physmem;
- err = os_map_memory((void *) uml_reserved, physmem_fd, offset,
- len - offset, 1, 1, 0);
- if(err < 0){
- os_print_error(err, "Mapping memory");
- exit(1);
- }
-
- bootmap_size = init_bootmem(pfn, pfn + delta);
- free_bootmem(__pa(reserve_end) + bootmap_size,
- len - bootmap_size - reserve);
-}
-
-int phys_mapping(unsigned long phys, __u64 *offset_out)
-{
- struct phys_desc *desc = find_virtmem_hash(&virtmem_hash,
- __va(phys & PAGE_MASK));
- int fd = -1;
-
- if(desc != NULL){
- fd = desc->fd;
- *offset_out = desc->offset;
- }
- else if(phys < physmem_size){
- fd = physmem_fd;
- *offset_out = phys;
- }
- else if(phys < __pa(end_iomem)){
- struct iomem_region *region = iomem_regions;
-
- while(region != NULL){
- if((phys >= region->phys) &&
- (phys < region->phys + region->size)){
- fd = region->fd;
- *offset_out = phys - region->phys;
- break;
- }
- region = region->next;
- }
- }
- else if(phys < __pa(end_iomem) + highmem){
- fd = physmem_fd;
- *offset_out = phys - iomem_size;
- }
-
- return(fd);
-}
-
-static int __init uml_mem_setup(char *line, int *add)
-{
- char *retptr;
- physmem_size = memparse(line,&retptr);
- return 0;
-}
-__uml_setup("mem=", uml_mem_setup,
-"mem=<Amount of desired ram>\n"
-" This controls how much \"physical\" memory the kernel allocates\n"
-" for the system. The size is specified as a number followed by\n"
-" one of 'k', 'K', 'm', 'M', which have the obvious meanings.\n"
-" This is not related to the amount of memory in the host. It can\n"
-" be more, and the excess, if it's ever used, will just be swapped out.\n"
-" Example: mem=64M\n\n"
-);
-
-unsigned long find_iomem(char *driver, unsigned long *len_out)
-{
- struct iomem_region *region = iomem_regions;
-
- while(region != NULL){
- if(!strcmp(region->driver, driver)){
- *len_out = region->size;
- return(region->virt);
- }
- }
-
- return(0);
-}
-
-int setup_iomem(void)
-{
- struct iomem_region *region = iomem_regions;
- unsigned long iomem_start = high_physmem + PAGE_SIZE;
- int err;
-
- while(region != NULL){
- err = os_map_memory((void *) iomem_start, region->fd, 0,
- region->size, 1, 1, 0);
- if(err)
- printk("Mapping iomem region for driver '%s' failed, "
- "errno = %d\n", region->driver, -err);
- else {
- region->virt = iomem_start;
- region->phys = __pa(region->virt);
- }
-
- iomem_start += region->size + PAGE_SIZE;
- region = region->next;
- }
-
- return(0);
-}
-
-__initcall(setup_iomem);
-
-/*
- * Overrides for Emacs so that we follow Linus's tabbing style.
- * Emacs will notice this stuff at the end of the file and automatically
- * adjust the settings for this buffer only. This must remain at the end
- * of the file.
- * ---------------------------------------------------------------------------
- * Local variables:
- * c-file-style: "linux"
- * End:
- */
+++ /dev/null
-/*
- * Copyright (C) 2002 - 2003 Jeff Dike (jdike@addtoit.com)
- * Licensed under the GPL
- */
-
-#include "linux/stddef.h"
-#include "linux/kernel.h"
-#include "linux/string.h"
-#include "linux/fs.h"
-#include "linux/highmem.h"
-#include "asm/page.h"
-#include "asm/pgtable.h"
-#include "asm/uaccess.h"
-#include "kern_util.h"
-
-extern void *um_virt_to_phys(struct task_struct *task, unsigned long addr,
- pte_t *pte_out);
-
-static unsigned long maybe_map(unsigned long virt, int is_write)
-{
- pte_t pte;
- int err;
-
- void *phys = um_virt_to_phys(current, virt, &pte);
- int dummy_code;
-
- if(IS_ERR(phys) || (is_write && !pte_write(pte))){
- err = handle_page_fault(virt, 0, is_write, 0, &dummy_code);
- if(err)
- return(0);
- phys = um_virt_to_phys(current, virt, NULL);
- }
- return((unsigned long) phys);
-}
-
-static int do_op(unsigned long addr, int len, int is_write,
- int (*op)(unsigned long addr, int len, void *arg), void *arg)
-{
- struct page *page;
- int n;
-
- addr = maybe_map(addr, is_write);
- if(addr == -1)
- return(-1);
-
- page = phys_to_page(addr);
- addr = (unsigned long) kmap(page) + (addr & ~PAGE_MASK);
- n = (*op)(addr, len, arg);
- kunmap(page);
-
- return(n);
-}
-
-static int buffer_op(unsigned long addr, int len, int is_write,
- int (*op)(unsigned long addr, int len, void *arg),
- void *arg)
-{
- int size = min(PAGE_ALIGN(addr) - addr, (unsigned long) len);
- int remain = len, n;
-
- n = do_op(addr, size, is_write, op, arg);
- if(n != 0)
- return(n < 0 ? remain : 0);
-
- addr += size;
- remain -= size;
- if(remain == 0)
- return(0);
-
- while(addr < ((addr + remain) & PAGE_MASK)){
- n = do_op(addr, PAGE_SIZE, is_write, op, arg);
- if(n != 0)
- return(n < 0 ? remain : 0);
-
- addr += PAGE_SIZE;
- remain -= PAGE_SIZE;
- }
- if(remain == 0)
- return(0);
-
- n = do_op(addr, remain, is_write, op, arg);
- if(n != 0)
- return(n < 0 ? remain : 0);
- return(0);
-}
-
-static int copy_chunk_from_user(unsigned long from, int len, void *arg)
-{
- unsigned long *to_ptr = arg, to = *to_ptr;
-
- memcpy((void *) to, (void *) from, len);
- *to_ptr += len;
- return(0);
-}
-
-int copy_from_user_skas(void *to, const void *from, int n)
-{
- if(segment_eq(get_fs(), KERNEL_DS)){
- memcpy(to, from, n);
- return(0);
- }
-
- return(access_ok_skas(VERIFY_READ, from, n) ?
- buffer_op((unsigned long) from, n, 0, copy_chunk_from_user, &to):
- n);
-}
-
-static int copy_chunk_to_user(unsigned long to, int len, void *arg)
-{
- unsigned long *from_ptr = arg, from = *from_ptr;
-
- memcpy((void *) to, (void *) from, len);
- *from_ptr += len;
- return(0);
-}
-
-int copy_to_user_skas(void *to, const void *from, int n)
-{
- if(segment_eq(get_fs(), KERNEL_DS)){
- memcpy(to, from, n);
- return(0);
- }
-
- return(access_ok_skas(VERIFY_WRITE, to, n) ?
- buffer_op((unsigned long) to, n, 1, copy_chunk_to_user, &from) :
- n);
-}
-
-static int strncpy_chunk_from_user(unsigned long from, int len, void *arg)
-{
- char **to_ptr = arg, *to = *to_ptr;
- int n;
-
- strncpy(to, (void *) from, len);
- n = strnlen(to, len);
- *to_ptr += n;
-
- if(n < len)
- return(1);
- return(0);
-}
-
-int strncpy_from_user_skas(char *dst, const char *src, int count)
-{
- int n;
- char *ptr = dst;
-
- if(segment_eq(get_fs(), KERNEL_DS)){
- strncpy(dst, src, count);
- return(strnlen(dst, count));
- }
-
- if(!access_ok_skas(VERIFY_READ, src, 1))
- return(-EFAULT);
-
- n = buffer_op((unsigned long) src, count, 0, strncpy_chunk_from_user,
- &ptr);
- if(n != 0)
- return(-EFAULT);
- return(strnlen(dst, count));
-}
-
-static int clear_chunk(unsigned long addr, int len, void *unused)
-{
- memset((void *) addr, 0, len);
- return(0);
-}
-
-int __clear_user_skas(void *mem, int len)
-{
- return(buffer_op((unsigned long) mem, len, 1, clear_chunk, NULL));
-}
-
-int clear_user_skas(void *mem, int len)
-{
- if(segment_eq(get_fs(), KERNEL_DS)){
- memset(mem, 0, len);
- return(0);
- }
-
- return(access_ok_skas(VERIFY_WRITE, mem, len) ?
- buffer_op((unsigned long) mem, len, 1, clear_chunk, NULL) : len);
-}
-
-static int strnlen_chunk(unsigned long str, int len, void *arg)
-{
- int *len_ptr = arg, n;
-
- n = strnlen((void *) str, len);
- *len_ptr += n;
-
- if(n < len)
- return(1);
- return(0);
-}
-
-int strnlen_user_skas(const void *str, int len)
-{
- int count = 0, n;
-
- if(segment_eq(get_fs(), KERNEL_DS))
- return(strnlen(str, len) + 1);
-
- n = buffer_op((unsigned long) str, len, 0, strnlen_chunk, &count);
- if(n == 0)
- return(count + 1);
- return(-EFAULT);
-}
-
-/*
- * Overrides for Emacs so that we follow Linus's tabbing style.
- * Emacs will notice this stuff at the end of the file and automatically
- * adjust the settings for this buffer only. This must remain at the end
- * of the file.
- * ---------------------------------------------------------------------------
- * Local variables:
- * c-file-style: "linux"
- * End:
- */
+++ /dev/null
-/*
- * Copyright (C) 2000 - 2003 Jeff Dike (jdike@addtoit.com)
- * Licensed under the GPL
- */
-
-#include "linux/sched.h"
-#include "asm/uaccess.h"
-
-int copy_from_user_tt(void *to, const void *from, int n)
-{
- if(!access_ok_tt(VERIFY_READ, from, n))
- return(n);
-
- return(__do_copy_from_user(to, from, n, ¤t->thread.fault_addr,
- ¤t->thread.fault_catcher));
-}
-
-int copy_to_user_tt(void *to, const void *from, int n)
-{
- if(!access_ok_tt(VERIFY_WRITE, to, n))
- return(n);
-
- return(__do_copy_to_user(to, from, n, ¤t->thread.fault_addr,
- ¤t->thread.fault_catcher));
-}
-
-int strncpy_from_user_tt(char *dst, const char *src, int count)
-{
- int n;
-
- if(!access_ok_tt(VERIFY_READ, src, 1))
- return(-EFAULT);
-
- n = __do_strncpy_from_user(dst, src, count,
- ¤t->thread.fault_addr,
- ¤t->thread.fault_catcher);
- if(n < 0) return(-EFAULT);
- return(n);
-}
-
-int __clear_user_tt(void *mem, int len)
-{
- return(__do_clear_user(mem, len,
- ¤t->thread.fault_addr,
- ¤t->thread.fault_catcher));
-}
-
-int clear_user_tt(void *mem, int len)
-{
- if(!access_ok_tt(VERIFY_WRITE, mem, len))
- return(len);
-
- return(__do_clear_user(mem, len, ¤t->thread.fault_addr,
- ¤t->thread.fault_catcher));
-}
-
-int strnlen_user_tt(const void *str, int len)
-{
- return(__do_strnlen_user(str, len,
- ¤t->thread.fault_addr,
- ¤t->thread.fault_catcher));
-}
-
-/*
- * Overrides for Emacs so that we follow Linus's tabbing style.
- * Emacs will notice this stuff at the end of the file and automatically
- * adjust the settings for this buffer only. This must remain at the end
- * of the file.
- * ---------------------------------------------------------------------------
- * Local variables:
- * c-file-style: "linux"
- * End:
- */
+++ /dev/null
-#include "linux/types.h"
-#include "linux/module.h"
-
-/* Some of this are builtin function (some are not but could in the future),
- * so I *must* declare good prototypes for them and then EXPORT them.
- * The kernel code uses the macro defined by include/linux/string.h,
- * so I undef macros; the userspace code does not include that and I
- * add an EXPORT for the glibc one.*/
-
-#undef strlen
-#undef strstr
-#undef memcpy
-#undef memset
-
-extern size_t strlen(const char *);
-extern void *memcpy(void *, const void *, size_t);
-extern void *memset(void *, int, size_t);
-extern int printf(const char *, ...);
-
-EXPORT_SYMBOL(strlen);
-EXPORT_SYMBOL(memcpy);
-EXPORT_SYMBOL(memset);
-EXPORT_SYMBOL(printf);
-
-EXPORT_SYMBOL(strstr);
-
-/* Here, instead, I can provide a fake prototype. Yes, someone cares: genksyms.
- * However, the modules will use the CRC defined *here*, no matter if it is
- * good; so the versions of these symbols will always match
- */
-#define EXPORT_SYMBOL_PROTO(sym) \
- int sym(void); \
- EXPORT_SYMBOL(sym);
-
-EXPORT_SYMBOL_PROTO(__errno_location);
-
-EXPORT_SYMBOL_PROTO(access);
-EXPORT_SYMBOL_PROTO(open);
-EXPORT_SYMBOL_PROTO(open64);
-EXPORT_SYMBOL_PROTO(close);
-EXPORT_SYMBOL_PROTO(read);
-EXPORT_SYMBOL_PROTO(write);
-EXPORT_SYMBOL_PROTO(dup2);
-EXPORT_SYMBOL_PROTO(__xstat);
-EXPORT_SYMBOL_PROTO(__lxstat);
-EXPORT_SYMBOL_PROTO(__lxstat64);
-EXPORT_SYMBOL_PROTO(lseek);
-EXPORT_SYMBOL_PROTO(lseek64);
-EXPORT_SYMBOL_PROTO(chown);
-EXPORT_SYMBOL_PROTO(truncate);
-EXPORT_SYMBOL_PROTO(utime);
-EXPORT_SYMBOL_PROTO(chmod);
-EXPORT_SYMBOL_PROTO(rename);
-EXPORT_SYMBOL_PROTO(__xmknod);
-
-EXPORT_SYMBOL_PROTO(symlink);
-EXPORT_SYMBOL_PROTO(link);
-EXPORT_SYMBOL_PROTO(unlink);
-EXPORT_SYMBOL_PROTO(readlink);
-
-EXPORT_SYMBOL_PROTO(mkdir);
-EXPORT_SYMBOL_PROTO(rmdir);
-EXPORT_SYMBOL_PROTO(opendir);
-EXPORT_SYMBOL_PROTO(readdir);
-EXPORT_SYMBOL_PROTO(closedir);
-EXPORT_SYMBOL_PROTO(seekdir);
-EXPORT_SYMBOL_PROTO(telldir);
-
-EXPORT_SYMBOL_PROTO(ioctl);
-
-EXPORT_SYMBOL_PROTO(pread64);
-EXPORT_SYMBOL_PROTO(pwrite64);
-
-EXPORT_SYMBOL_PROTO(statfs);
-EXPORT_SYMBOL_PROTO(statfs64);
-
-EXPORT_SYMBOL_PROTO(getuid);
-
-/*
- * Overrides for Emacs so that we follow Linus's tabbing style.
- * Emacs will notice this stuff at the end of the file and automatically
- * adjust the settings for this buffer only. This must remain at the end
- * of the file.
- * ---------------------------------------------------------------------------
- * Local variables:
- * c-file-style: "linux"
- * End:
- */
+++ /dev/null
-/*
- * dz.c: Serial port driver for DECStations equiped
- * with the DZ chipset.
- *
- * Copyright (C) 1998 Olivier A. D. Lebaillif
- *
- * Email: olivier.lebaillif@ifrsys.com
- *
- * [31-AUG-98] triemer
- * Changed IRQ to use Harald's dec internals interrupts.h
- * removed base_addr code - moving address assignment to setup.c
- * Changed name of dz_init to rs_init to be consistent with tc code
- * [13-NOV-98] triemer fixed code to receive characters
- * after patches by harald to irq code.
- * [09-JAN-99] triemer minor fix for schedule - due to removal of timeout
- * field from "current" - somewhere between 2.1.121 and 2.1.131
-Qua Jun 27 15:02:26 BRT 2001
- * [27-JUN-2001] Arnaldo Carvalho de Melo <acme@conectiva.com.br> - cleanups
- *
- * Parts (C) 1999 David Airlie, airlied@linux.ie
- * [07-SEP-99] Bugfixes
- */
-
-/* #define DEBUG_DZ 1 */
-
-#include <linux/module.h>
-
-#include <linux/config.h>
-#include <linux/kernel.h>
-#include <linux/sched.h>
-#include <linux/init.h>
-#include <linux/slab.h>
-#include <linux/mm.h>
-#include <linux/major.h>
-#include <linux/param.h>
-#include <linux/interrupt.h>
-#include <linux/serial.h>
-#include <linux/serialP.h>
-#include <asm-mips/wbflush.h>
-#include <asm/dec/interrupts.h> /* for definition of SERIAL */
-
-/* for definition of struct console */
-#ifdef CONFIG_SERIAL_CONSOLE
-#define CONSOLE_LINE (3)
-#endif /* ifdef CONFIG_SERIAL_CONSOLE */
-#if defined(CONFIG_SERIAL_CONSOLE) || defined(DEBUG_DZ)
-#include <linux/console.h>
-#endif /* if defined(CONFIG_SERIAL_CONSOLE) || defined(DEBUG_DZ) */
-
-#include <linux/tty.h>
-#include <linux/tty_flip.h>
-
-#include <asm/uaccess.h>
-#include <asm/irq.h>
-#include <asm/dec/machtype.h>
-#include <asm/dec/kn01.h>
-#include <asm/dec/kn02.h>
-
-#ifdef DEBUG_DZ
-#include <linux/ptrace.h>
-#include <linux/fs.h>
-#include <asm/bootinfo.h>
-
-extern int (*prom_printf) (char *,...);
-#endif
-
-
-
-#include "dz.h"
-
-#define DZ_INTR_DEBUG 1
-
-DECLARE_TASK_QUEUE(tq_serial);
-
-static struct dz_serial *lines[4];
-static unsigned char tmp_buffer[256];
-
-
-
-#ifdef DEBUG_DZ
-/*
- * debugging code to send out chars via prom
- */
-static void debug_console( const char *s,int count)
-{
- unsigned i;
-
- for (i = 0; i < count; i++) {
- if (*s == 10)
- prom_printf("%c", 13);
- prom_printf("%c", *s++);
- }
-}
-#endif
-
-/*
- * ------------------------------------------------------------
- * dz_in () and dz_out ()
- *
- * These routines are used to access the registers of the DZ
- * chip, hiding relocation differences between implementation.
- * ------------------------------------------------------------
- */
-
-static inline unsigned short dz_in (struct dz_serial *info, unsigned offset)
-{
- volatile u16 *addr = (volatile u16 *)(info->port + offset);
-
- return *addr;
-}
-
-static inline void dz_out (struct dz_serial *info, unsigned offset,
- unsigned short value)
-{
- volatile u16 *addr = (volatile u16 *)(info->port + offset);
- *addr = value;
-}
-
-/*
- * ------------------------------------------------------------
- * rs_stop () and rs_start ()
- *
- * These routines are called before setting or resetting
- * tty->stopped. They enable or disable transmitter interrupts,
- * as necessary.
- * ------------------------------------------------------------
- */
-
-static void dz_stop (struct tty_struct *tty)
-{
- struct dz_serial *info;
- unsigned short mask, tmp;
-
- if (!tty)
- return;
-
- info = (struct dz_serial *)tty->driver_data;
-
- mask = 1 << info->line;
- tmp = dz_in (info, DZ_TCR); /* read the TX flag */
-
- tmp &= ~mask; /* clear the TX flag */
- dz_out (info, DZ_TCR, tmp);
-}
-
-static void dz_start (struct tty_struct *tty)
-{
- struct dz_serial *info = (struct dz_serial *)tty->driver_data;
- unsigned short mask, tmp;
-
- mask = 1 << info->line;
- tmp = dz_in (info, DZ_TCR); /* read the TX flag */
-
- tmp |= mask; /* set the TX flag */
- dz_out (info, DZ_TCR, tmp);
-}
-
-/*
- * ------------------------------------------------------------
- * Here starts the interrupt handling routines. All of the
- * following subroutines are declared as inline and are folded
- * into dz_interrupt. They were separated out for readability's
- * sake.
- *
- * Note: rs_interrupt() is a "fast" interrupt, which means that it
- * runs with interrupts turned off. People who may want to modify
- * rs_interrupt() should try to keep the interrupt handler as fast as
- * possible. After you are done making modifications, it is not a bad
- * idea to do:
- *
- * gcc -S -DKERNEL -Wall -Wstrict-prototypes -O6 -fomit-frame-pointer dz.c
- *
- * and look at the resulting assemble code in serial.s.
- *
- * ------------------------------------------------------------
- */
-
-/*
- * ------------------------------------------------------------
- * dz_sched_event ()
- *
- * This routine is used by the interrupt handler to schedule
- * processing in the software interrupt portion of the driver.
- * ------------------------------------------------------------
- */
-static inline void dz_sched_event (struct dz_serial *info, int event)
-{
- info->event |= 1 << event;
- queue_task(&info->tqueue, &tq_serial);
- mark_bh(SERIAL_BH);
-}
-
-/*
- * ------------------------------------------------------------
- * receive_char ()
- *
- * This routine deals with inputs from any lines.
- * ------------------------------------------------------------
- */
-static inline void receive_chars (struct dz_serial *info_in)
-{
- struct dz_serial *info;
- struct tty_struct *tty = 0;
- struct async_icount *icount;
- int ignore = 0;
- unsigned short status, tmp;
- unsigned char ch;
-
- /*
- * This code is going to be a problem... the call to tty_flip_buffer
- * is going to need to be rethought...
- */
- do {
- status = dz_in (info_in, DZ_RBUF);
- info = lines[LINE(status)];
-
- /* punt so we don't get duplicate characters */
- if (!(status & DZ_DVAL))
- goto ignore_char;
-
- ch = UCHAR(status); /* grab the char */
-
-#if 0
- if (info->is_console) {
- if (ch == 0)
- return; /* it's a break ... */
- }
-#endif
-
- tty = info->tty; /* now tty points to the proper dev */
- icount = &info->icount;
-
- if (!tty)
- break;
- if (tty->flip.count >= TTY_FLIPBUF_SIZE) break;
-
- *tty->flip.char_buf_ptr = ch;
- *tty->flip.flag_buf_ptr = 0;
- icount->rx++;
-
- /* keep track of the statistics */
- if (status & (DZ_OERR | DZ_FERR | DZ_PERR)) {
- if (status & DZ_PERR) /* parity error */
- icount->parity++;
- else if (status & DZ_FERR) /* frame error */
- icount->frame++;
- if (status & DZ_OERR) /* overrun error */
- icount->overrun++;
-
- /*
- * Check to see if we should ignore the character and
- * mask off conditions that should be ignored
- */
-
- if (status & info->ignore_status_mask) {
- if (++ignore > 100)
- break;
- goto ignore_char;
- }
-
- /* mask off the error conditions we want to ignore */
- tmp = status & info->read_status_mask;
-
- if (tmp & DZ_PERR) {
- *tty->flip.flag_buf_ptr = TTY_PARITY;
-#ifdef DEBUG_DZ
- debug_console("PERR\n",5);
-#endif /* DEBUG_DZ */
- } else if (tmp & DZ_FERR) {
- *tty->flip.flag_buf_ptr = TTY_FRAME;
-#ifdef DEBUG_DZ
- debug_console("FERR\n",5);
-#endif /* DEBUG_DZ */
- } if (tmp & DZ_OERR) {
-#ifdef DEBUG_DZ
- debug_console("OERR\n",5);
-#endif /* DEBUG_DZ */
- if (tty->flip.count < TTY_FLIPBUF_SIZE) {
- tty->flip.count++;
- tty->flip.flag_buf_ptr++;
- tty->flip.char_buf_ptr++;
- *tty->flip.flag_buf_ptr = TTY_OVERRUN;
- }
- }
- }
- tty->flip.flag_buf_ptr++;
- tty->flip.char_buf_ptr++;
- tty->flip.count++;
-ignore_char:
- ;
- } while (status & DZ_DVAL);
-
- if (tty)
- tty_flip_buffer_push(tty);
-}
-
-/*
- * ------------------------------------------------------------
- * transmit_char ()
- *
- * This routine deals with outputs to any lines.
- * ------------------------------------------------------------
- */
-static inline void transmit_chars (struct dz_serial *info)
-{
- unsigned char tmp;
-
- if (info->x_char) { /* XON/XOFF chars */
- dz_out(info, DZ_TDR, info->x_char);
- info->icount.tx++;
- info->x_char = 0;
- return;
- }
-
- /* if nothing to do or stopped or hardware stopped */
- if ((info->xmit_cnt <= 0) || info->tty->stopped ||
- info->tty->hw_stopped) {
- dz_stop(info->tty);
- return;
- }
-
- /*
- * If something to do ... (rember the dz has no output fifo so we go
- * one char at a time :-<
- */
- tmp = (unsigned short) info->xmit_buf[info->xmit_tail++];
- dz_out(info, DZ_TDR, tmp);
- info->xmit_tail = info->xmit_tail & (DZ_XMIT_SIZE - 1);
- info->icount.tx++;
-
- if (--info->xmit_cnt < WAKEUP_CHARS)
- dz_sched_event(info, DZ_EVENT_WRITE_WAKEUP);
-
- /* Are we done */
- if (info->xmit_cnt <= 0)
- dz_stop(info->tty);
-}
-
-/*
- * ------------------------------------------------------------
- * check_modem_status ()
- *
- * Only valid for the MODEM line duh !
- * ------------------------------------------------------------
- */
-static inline void check_modem_status (struct dz_serial *info)
-{
- unsigned short status;
-
- /* if not ne modem line just return */
- if (info->line != DZ_MODEM)
- return;
-
- status = dz_in(info, DZ_MSR);
-
- /* it's easy, since DSR2 is the only bit in the register */
- if (status)
- info->icount.dsr++;
-}
-
-/*
- * ------------------------------------------------------------
- * dz_interrupt ()
- *
- * this is the main interrupt routine for the DZ chip.
- * It deals with the multiple ports.
- * ------------------------------------------------------------
- */
-static void dz_interrupt (int irq, void *dev, struct pt_regs *regs)
-{
- struct dz_serial *info;
- unsigned short status;
-
- /* get the reason why we just got an irq */
- status = dz_in((struct dz_serial *)dev, DZ_CSR);
- info = lines[LINE(status)]; /* re-arrange info the proper port */
-
- if (status & DZ_RDONE)
- receive_chars(info); /* the receive function */
-
- if (status & DZ_TRDY)
- transmit_chars (info);
-}
-
-/*
- * -------------------------------------------------------------------
- * Here ends the DZ interrupt routines.
- * -------------------------------------------------------------------
- */
-
-/*
- * This routine is used to handle the "bottom half" processing for the
- * serial driver, known also the "software interrupt" processing.
- * This processing is done at the kernel interrupt level, after the
- * rs_interrupt() has returned, BUT WITH INTERRUPTS TURNED ON. This
- * is where time-consuming activities which can not be done in the
- * interrupt driver proper are done; the interrupt driver schedules
- * them using rs_sched_event(), and they get done here.
- */
-static void do_serial_bh (void)
-{
- run_task_queue (&tq_serial);
-}
-
-static void do_softint (void *private_data)
-{
- struct dz_serial *info = (struct dz_serial *) private_data;
- struct tty_struct *tty = info->tty;
-
- if (!tty)
- return;
-
- if (test_and_clear_bit(DZ_EVENT_WRITE_WAKEUP, &info->event)) {
- if ((tty->flags & (1 << TTY_DO_WRITE_WAKEUP)) &&
- tty->ldisc.write_wakeup)
- (tty->ldisc.write_wakeup) (tty);
- wake_up_interruptible (&tty->write_wait);
- }
-}
-
-/*
- * -------------------------------------------------------------------
- * This routine is called from the scheduler tqueue when the interrupt
- * routine has signalled that a hangup has occurred. The path of
- * hangup processing is:
- *
- * serial interrupt routine -> (scheduler tqueue) ->
- * do_serial_hangup() -> tty->hangup() -> rs_hangup()
- * -------------------------------------------------------------------
- */
-static void do_serial_hangup (void *private_data)
-{
- struct dz_serial *info = (struct dz_serial *) private_data;
- struct tty_struct *tty = info->tty;
-
- if (!tty)
- return;
-
- tty_hangup(tty);
-}
-
-/*
- * -------------------------------------------------------------------
- * startup ()
- *
- * various initialization tasks
- * -------------------------------------------------------------------
- */
-static int startup (struct dz_serial *info)
-{
- unsigned long page, flags;
- unsigned short tmp;
-
- if (info->is_initialized)
- return 0;
-
- save_and_cli(flags);
-
- if (!info->port) {
- if (info->tty) set_bit(TTY_IO_ERROR, &info->tty->flags);
- restore_flags(flags);
- return -ENODEV;
- }
-
- if (!info->xmit_buf) {
- page = get_zeroed_page(GFP_KERNEL);
- if (!page) {
- restore_flags (flags);
- return -ENOMEM;
- }
- info->xmit_buf = (unsigned char *)page;
- }
-
- if (info->tty)
- clear_bit(TTY_IO_ERROR, &info->tty->flags);
-
- /* enable the interrupt and the scanning */
- tmp = dz_in(info, DZ_CSR);
- tmp |= (DZ_RIE | DZ_TIE | DZ_MSE);
- dz_out(info, DZ_CSR, tmp);
-
- info->xmit_cnt = info->xmit_head = info->xmit_tail = 0;
-
- change_speed(info); /* set up the speed */
-
- /*
- * Clear the line transmitter buffer I can't figure out why I need to
- * do this - but its necessary - in order for the console portion and
- * the interrupt portion to live happily side by side.
- */
-
- info->is_initialized = 1;
-
- restore_flags(flags);
-
- return 0;
-}
-
-/*
- * -------------------------------------------------------------------
- * shutdown ()
- *
- * This routine will shutdown a serial port; interrupts are disabled, and
- * DTR is dropped if the hangup on close termio flag is on.
- * -------------------------------------------------------------------
- */
-static void shutdown (struct dz_serial *info)
-{
- unsigned long flags;
- unsigned short tmp;
-
- if (!info->is_initialized)
- return;
-
- save_and_cli(flags);
-
- dz_stop (info->tty);
-
- info->cflags &= ~DZ_CREAD; /* turn off receive enable flag */
- dz_out(info, DZ_LPR, info->cflags);
-
- if (info->xmit_buf) { /* free Tx buffer */
- free_page((unsigned long)info->xmit_buf);
- info->xmit_buf = 0;
- }
-
- if (!info->tty || (info->tty->termios->c_cflag & HUPCL)) {
- tmp = dz_in(info, DZ_TCR);
- if (tmp & DZ_MODEM_DTR) {
- tmp &= ~DZ_MODEM_DTR;
- dz_out(info, DZ_TCR, tmp);
- }
- }
-
- if (info->tty)
- set_bit (TTY_IO_ERROR, &info->tty->flags);
-
- info->is_initialized = 0;
-
- restore_flags (flags);
-}
-
-/*
- * -------------------------------------------------------------------
- * change_speed ()
- *
- * set the baud rate.
- * -------------------------------------------------------------------
- */
-static void change_speed (struct dz_serial *info)
-{
- unsigned long flags;
- unsigned cflag;
- int baud;
-
- if (!info->tty || !info->tty->termios)
- return;
-
- save_and_cli(flags);
-
- info->cflags = info->line;
-
- cflag = info->tty->termios->c_cflag;
-
- switch (cflag & CSIZE) {
- case CS5:
- info->cflags |= DZ_CS5;
- break;
- case CS6:
- info->cflags |= DZ_CS6;
- break;
- case CS7:
- info->cflags |= DZ_CS7;
- break;
- case CS8:
- default:
- info->cflags |= DZ_CS8;
- }
-
- if (cflag & CSTOPB)
- info->cflags |= DZ_CSTOPB;
- if (cflag & PARENB)
- info->cflags |= DZ_PARENB;
- if (cflag & PARODD)
- info->cflags |= DZ_PARODD;
-
- baud = tty_get_baud_rate(info->tty);
- switch (baud) {
- case 50:
- info->cflags |= DZ_B50;
- break;
- case 75:
- info->cflags |= DZ_B75;
- break;
- case 110:
- info->cflags |= DZ_B110;
- break;
- case 134:
- info->cflags |= DZ_B134;
- break;
- case 150:
- info->cflags |= DZ_B150;
- break;
- case 300:
- info->cflags |= DZ_B300;
- break;
- case 600:
- info->cflags |= DZ_B600;
- break;
- case 1200:
- info->cflags |= DZ_B1200;
- break;
- case 1800:
- info->cflags |= DZ_B1800;
- break;
- case 2000:
- info->cflags |= DZ_B2000;
- break;
- case 2400:
- info->cflags |= DZ_B2400;
- break;
- case 3600:
- info->cflags |= DZ_B3600;
- break;
- case 4800:
- info->cflags |= DZ_B4800;
- break;
- case 7200:
- info->cflags |= DZ_B7200;
- break;
- case 9600:
- default:
- info->cflags |= DZ_B9600;
- }
-
- info->cflags |= DZ_RXENAB;
- dz_out(info, DZ_LPR, info->cflags);
-
- /* setup accept flag */
- info->read_status_mask = DZ_OERR;
- if (I_INPCK(info->tty))
- info->read_status_mask |= (DZ_FERR | DZ_PERR);
-
- /* characters to ignore */
- info->ignore_status_mask = 0;
- if (I_IGNPAR(info->tty))
- info->ignore_status_mask |= (DZ_FERR | DZ_PERR);
-
- restore_flags(flags);
-}
-
-/*
- * -------------------------------------------------------------------
- * dz_flush_char ()
- *
- * Flush the buffer.
- * -------------------------------------------------------------------
- */
-static void dz_flush_chars (struct tty_struct *tty)
-{
- struct dz_serial *info = (struct dz_serial *)tty->driver_data;
- unsigned long flags;
-
- if (info->xmit_cnt <= 0 || tty->stopped || tty->hw_stopped ||
- !info->xmit_buf)
- return;
-
- save_and_cli(flags);
- dz_start (info->tty);
- restore_flags(flags);
-}
-
-
-/*
- * -------------------------------------------------------------------
- * dz_write ()
- *
- * main output routine.
- * -------------------------------------------------------------------
- */
-static int dz_write (struct tty_struct *tty, int from_user,
- const unsigned char *buf, int count)
-{
- struct dz_serial *info = (struct dz_serial *)tty->driver_data;
- unsigned long flags;
- int c, ret = 0;
-
- if (!tty )
- return ret;
- if (!info->xmit_buf)
- return ret;
- if (!tmp_buf)
- tmp_buf = tmp_buffer;
-
- if (from_user) {
- down (&tmp_buf_sem);
- while (1) {
- c = MIN(count, MIN(DZ_XMIT_SIZE - info->xmit_cnt - 1,
- DZ_XMIT_SIZE - info->xmit_head));
- if (c <= 0)
- break;
-
- c -= copy_from_user (tmp_buf, buf, c);
- if (!c) {
- if (!ret)
- ret = -EFAULT;
- break;
- }
-
- save_and_cli(flags);
-
- c = MIN(c, MIN(DZ_XMIT_SIZE - info->xmit_cnt - 1,
- DZ_XMIT_SIZE - info->xmit_head));
- memcpy(info->xmit_buf + info->xmit_head, tmp_buf, c);
- info->xmit_head = ((info->xmit_head + c) &
- (DZ_XMIT_SIZE - 1));
- info->xmit_cnt += c;
- restore_flags(flags);
-
- buf += c;
- count -= c;
- ret += c;
- }
- up(&tmp_buf_sem);
- } else {
- while (1) {
- save_and_cli(flags);
-
- c = MIN(count, MIN(DZ_XMIT_SIZE - info->xmit_cnt - 1,
- DZ_XMIT_SIZE - info->xmit_head));
- if (c <= 0) {
- restore_flags (flags);
- break;
- }
- memcpy(info->xmit_buf + info->xmit_head, buf, c);
- info->xmit_head = ((info->xmit_head + c) &
- (DZ_XMIT_SIZE-1));
- info->xmit_cnt += c;
- restore_flags(flags);
-
- buf += c;
- count -= c;
- ret += c;
- }
- }
-
- if (info->xmit_cnt) {
- if (!tty->stopped) {
- if (!tty->hw_stopped) {
- dz_start (info->tty);
- }
- }
- }
-
- return ret;
-}
-
-/*
- * -------------------------------------------------------------------
- * dz_write_room ()
- *
- * compute the amount of space available for writing.
- * -------------------------------------------------------------------
- */
-static int dz_write_room (struct tty_struct *tty)
-{
- struct dz_serial *info = (struct dz_serial *)tty->driver_data;
- int ret;
-
- ret = DZ_XMIT_SIZE - info->xmit_cnt - 1;
- if (ret < 0)
- ret = 0;
-
- return ret;
-}
-
-/*
- * -------------------------------------------------------------------
- * dz_chars_in_buffer ()
- *
- * compute the amount of char left to be transmitted
- * -------------------------------------------------------------------
- */
-static int dz_chars_in_buffer (struct tty_struct *tty)
-{
- struct dz_serial *info = (struct dz_serial *)tty->driver_data;
-
- return info->xmit_cnt;
-}
-
-/*
- * -------------------------------------------------------------------
- * dz_flush_buffer ()
- *
- * Empty the output buffer
- * -------------------------------------------------------------------
- */
-static void dz_flush_buffer (struct tty_struct *tty)
-{
- struct dz_serial *info = (struct dz_serial *)tty->driver_data;
-
- cli();
- info->xmit_cnt = info->xmit_head = info->xmit_tail = 0;
- sti();
-
- wake_up_interruptible (&tty->write_wait);
-
- if ((tty->flags & (1 << TTY_DO_WRITE_WAKEUP)) &&
- tty->ldisc.write_wakeup)
- tty->ldisc.write_wakeup(tty);
-}
-
-/*
- * ------------------------------------------------------------
- * dz_throttle () and dz_unthrottle ()
- *
- * This routine is called by the upper-layer tty layer to signal that
- * incoming characters should be throttled (or not).
- * ------------------------------------------------------------
- */
-static void dz_throttle (struct tty_struct *tty)
-{
- struct dz_serial *info = (struct dz_serial *)tty->driver_data;
-
- if (I_IXOFF(tty))
- info->x_char = STOP_CHAR(tty);
-}
-
-static void dz_unthrottle (struct tty_struct *tty)
-{
- struct dz_serial *info = (struct dz_serial *)tty->driver_data;
-
- if (I_IXOFF(tty)) {
- if (info->x_char)
- info->x_char = 0;
- else
- info->x_char = START_CHAR(tty);
- }
-}
-
-static void dz_send_xchar (struct tty_struct *tty, char ch)
-{
- struct dz_serial *info = (struct dz_serial *)tty->driver_data;
-
- info->x_char = ch;
-
- if (ch)
- dz_start(info->tty);
-}
-
-/*
- * ------------------------------------------------------------
- * rs_ioctl () and friends
- * ------------------------------------------------------------
- */
-static int get_serial_info(struct dz_serial *info,
- struct serial_struct *retinfo)
-{
- struct serial_struct tmp;
-
- if (!retinfo)
- return -EFAULT;
-
- memset (&tmp, 0, sizeof(tmp));
-
- tmp.type = info->type;
- tmp.line = info->line;
- tmp.port = info->port;
- tmp.irq = SERIAL;
- tmp.flags = info->flags;
- tmp.baud_base = info->baud_base;
- tmp.close_delay = info->close_delay;
- tmp.closing_wait = info->closing_wait;
-
- return copy_to_user(retinfo, &tmp, sizeof(*retinfo)) ? -EFAULT : 0;
-}
-
-static int set_serial_info (struct dz_serial *info,
- struct serial_struct *new_info)
-{
- struct serial_struct new_serial;
- struct dz_serial old_info;
- int retval = 0;
-
- if (!new_info)
- return -EFAULT;
-
- if (copy_from_user(&new_serial, new_info, sizeof(new_serial)))
- return -EFAULT;
-
- old_info = *info;
-
- if (!capable(CAP_SYS_ADMIN))
- return -EPERM;
-
- if (info->count > 1)
- return -EBUSY;
-
- /*
- * OK, past this point, all the error checking has been done.
- * At this point, we start making changes.....
- */
-
- info->baud_base = new_serial.baud_base;
- info->type = new_serial.type;
- info->close_delay = new_serial.close_delay;
- info->closing_wait = new_serial.closing_wait;
-
- retval = startup(info);
-
- return retval;
-}
-
-/*
- * get_lsr_info - get line status register info
- *
- * Purpose: Let user call ioctl() to get info when the UART physically
- * is emptied. On bus types like RS485, the transmitter must
- * release the bus after transmitting. This must be done when
- * the transmit shift register is empty, not be done when the
- * transmit holding register is empty. This functionality
- * allows an RS485 driver to be written in user space.
- */
-static int get_lsr_info (struct dz_serial *info, unsigned int *value)
-{
- unsigned short status = dz_in (info, DZ_LPR);
-
- return put_user (status, value);
-}
-
-/*
- * This routine sends a break character out the serial port.
- */
-static void send_break (struct dz_serial *info, int duration)
-{
- unsigned long flags;
- unsigned short tmp, mask;
-
- if (!info->port)
- return;
-
- mask = 1 << info->line;
- tmp = dz_in (info, DZ_TCR);
- tmp |= mask;
-
- current->state = TASK_INTERRUPTIBLE;
-
- save_and_cli(flags);
- dz_out(info, DZ_TCR, tmp);
- schedule_timeout(duration);
- tmp &= ~mask;
- dz_out(info, DZ_TCR, tmp);
- restore_flags(flags);
-}
-
-static int dz_ioctl(struct tty_struct *tty, struct file *file,
- unsigned int cmd, unsigned long arg)
-{
- int error;
- struct dz_serial * info = (struct dz_serial *)tty->driver_data;
- int retval;
-
- if (cmd != TIOCGSERIAL && cmd != TIOCSSERIAL &&
- cmd != TIOCSERCONFIG && cmd != TIOCSERGWILD &&
- cmd != TIOCSERSWILD && cmd != TIOCSERGSTRUCT) {
- if (tty->flags & (1 << TTY_IO_ERROR))
- return -EIO;
- }
-
- switch (cmd) {
- case TCSBRK: /* SVID version: non-zero arg --> no break */
- retval = tty_check_change(tty);
- if (retval)
- return retval;
- tty_wait_until_sent(tty, 0);
- if (!arg)
- send_break(info, HZ/4); /* 1/4 second */
- return 0;
-
- case TCSBRKP: /* support for POSIX tcsendbreak() */
- retval = tty_check_change(tty);
- if (retval)
- return retval;
- tty_wait_until_sent(tty, 0);
- send_break(info, arg ? arg*(HZ/10) : HZ/4);
- return 0;
-
- case TIOCGSOFTCAR:
- return put_user(C_CLOCAL(tty) ? 1 : 0, (unsigned long *)arg);
-
- case TIOCSSOFTCAR:
- if (get_user (arg, (unsigned long *)arg))
- return -EFAULT;
-
- tty->termios->c_cflag = (tty->termios->c_cflag & ~CLOCAL) |
- (arg ? CLOCAL : 0);
- return 0;
-
- case TIOCGSERIAL:
- return get_serial_info(info, (struct serial_struct *)arg);
-
- case TIOCSSERIAL:
- return set_serial_info(info, (struct serial_struct *) arg);
-
- case TIOCSERGETLSR: /* Get line status register */
- return get_lsr_info (info, (unsigned int *)arg);
-
- case TIOCSERGSTRUCT:
- return copy_to_user((struct dz_serial *)arg, info,
- sizeof(struct dz_serial)) ? -EFAULT : 0;
-
- default:
- return -ENOIOCTLCMD;
- }
-
- return 0;
-}
-
-static void dz_set_termios (struct tty_struct *tty,
- struct termios *old_termios)
-{
- struct dz_serial *info = (struct dz_serial *)tty->driver_data;
-
- if (tty->termios->c_cflag == old_termios->c_cflag)
- return;
-
- change_speed (info);
-
- if ((old_termios->c_cflag & CRTSCTS) &&
- !(tty->termios->c_cflag & CRTSCTS)) {
- tty->hw_stopped = 0;
- dz_start(tty);
- }
-}
-
-/*
- * ------------------------------------------------------------
- * dz_close()
- *
- * This routine is called when the serial port gets closed. First, we
- * wait for the last remaining data to be sent. Then, we turn off
- * the transmit enable and receive enable flags.
- * ------------------------------------------------------------
- */
-static void dz_close(struct tty_struct *tty, struct file *filp)
-{
- struct dz_serial * info = (struct dz_serial *)tty->driver_data;
- unsigned long flags;
-
- if (!info)
- return;
-
- save_and_cli(flags);
-
- if (tty_hung_up_p(filp)) {
- restore_flags(flags);
- return;
- }
-
- if ((tty->count == 1) && (info->count != 1)) {
- /*
- * Uh, oh. tty->count is 1, which means that the tty structure
- * will be freed. Info->count should always be one in these
- * conditions. If it's greater than one, we've got real
- * problems, since it means the serial port won't be shutdown.
- */
- printk("dz_close: bad serial port count; tty->count is 1, "
- "info->count is %d\n", info->count);
- info->count = 1;
- }
-
- if (--info->count < 0) {
- printk("ds_close: bad serial port count for ttyS%02d: %d\n",
- info->line, info->count);
- info->count = 0;
- }
-
- if (info->count) {
- restore_flags(flags);
- return;
- }
- info->flags |= DZ_CLOSING;
- /*
- * Now we wait for the transmit buffer to clear; and we notify the line
- * discipline to only process XON/XOFF characters.
- */
- tty->closing = 1;
-
- if (info->closing_wait != DZ_CLOSING_WAIT_NONE)
- tty_wait_until_sent(tty, info->closing_wait);
-
- /*
- * At this point we stop accepting input. To do this, we disable the
- * receive line status interrupts.
- */
- shutdown(info);
-
- if (tty->driver->flush_buffer)
- tty->driver->flush_buffer (tty);
- if (tty->ldisc.flush_buffer)
- tty->ldisc.flush_buffer (tty);
- tty->closing = 0;
- info->event = 0;
- info->tty = 0;
-
- if (tty->ldisc.num != ldiscs[N_TTY].num) {
- if (tty->ldisc.close)
- tty->ldisc.close(tty);
- tty->ldisc = ldiscs[N_TTY];
- tty->termios->c_line = N_TTY;
- if (tty->ldisc.open)
- tty->ldisc.open(tty);
- }
- if (info->blocked_open) {
- if (info->close_delay) {
- current->state = TASK_INTERRUPTIBLE;
- schedule_timeout(info->close_delay);
- }
- wake_up_interruptible(&info->open_wait);
- }
-
- info->flags &= ~(DZ_NORMAL_ACTIVE | DZ_CLOSING);
- wake_up_interruptible(&info->close_wait);
-
- restore_flags(flags);
-}
-
-/*
- * dz_hangup () --- called by tty_hangup() when a hangup is signaled.
- */
-static void dz_hangup (struct tty_struct *tty)
-{
- struct dz_serial *info = (struct dz_serial *) tty->driver_data;
-
- dz_flush_buffer(tty);
- shutdown(info);
- info->event = 0;
- info->count = 0;
- info->flags &= ~DZ_NORMAL_ACTIVE;
- info->tty = 0;
- wake_up_interruptible(&info->open_wait);
-}
-
-/*
- * ------------------------------------------------------------
- * rs_open() and friends
- * ------------------------------------------------------------
- */
-static int block_til_ready(struct tty_struct *tty, struct file *filp,
- struct dz_serial *info)
-{
- DECLARE_WAITQUEUE(wait, current);
- int retval;
- int do_clocal = 0;
-
- /*
- * If the device is in the middle of being closed, then block
- * until it's done, and then try again.
- */
- if (info->flags & DZ_CLOSING) {
- interruptible_sleep_on(&info->close_wait);
- return -EAGAIN;
- }
-
- /*
- * If non-blocking mode is set, or the port is not enabled, then make
- * the check up front and then exit.
- */
- if ((filp->f_flags & O_NONBLOCK) ||
- (tty->flags & (1 << TTY_IO_ERROR))) {
- info->flags |= DZ_NORMAL_ACTIVE;
-
- return 0;
- }
-
- if (tty->termios->c_cflag & CLOCAL)
- do_clocal = 1;
-
- /*
- * Block waiting for the carrier detect and the line to become free
- * (i.e., not in use by the callout). While we are in this loop,
- * info->count is dropped by one, so that dz_close() knows when to free
- * things. We restore it upon exit, either normal or abnormal.
- */
- retval = 0;
- add_wait_queue(&info->open_wait, &wait);
-
- info->count--;
- info->blocked_open++;
- while (1) {
- set_current_state(TASK_INTERRUPTIBLE);
- if (tty_hung_up_p (filp) || !(info->is_initialized)) {
- retval = -EAGAIN;
- break;
- }
- if (!(info->flags & DZ_CLOSING) && do_clocal)
- break;
- if (signal_pending(current)) {
- retval = -ERESTARTSYS;
- break;
- }
- schedule();
- }
-
- current->state = TASK_RUNNING;
- remove_wait_queue (&info->open_wait, &wait);
- if (!tty_hung_up_p(filp))
- info->count++;
- info->blocked_open--;
-
- if (retval)
- return retval;
- info->flags |= DZ_NORMAL_ACTIVE;
- return 0;
-}
-
-/*
- * This routine is called whenever a serial port is opened. It
- * enables interrupts for a serial port. It also performs the
- * serial-specific initialization for the tty structure.
- */
-static int dz_open (struct tty_struct *tty, struct file *filp)
-{
- struct dz_serial *info;
- int retval, line;
-
- line = tty->index;
-
- /*
- * The dz lines for the mouse/keyboard must be opened using their
- * respective drivers.
- */
- if ((line < 0) || (line >= DZ_NB_PORT))
- return -ENODEV;
-
- if ((line == DZ_KEYBOARD) || (line == DZ_MOUSE))
- return -ENODEV;
-
- info = lines[line];
- info->count++;
-
- tty->driver_data = info;
- info->tty = tty;
-
- /*
- * Start up serial port
- */
- retval = startup (info);
- if (retval)
- return retval;
-
- retval = block_til_ready (tty, filp, info);
- if (retval)
- return retval;
-
- return 0;
-}
-
-static void show_serial_version (void)
-{
- printk("%s%s\n", dz_name, dz_version);
-}
-
-static struct tty_driver *serial_driver;
-
-static struct tty_operations serial_ops = {
- .open = dz_open,
- .close = dz_close,
- .write = dz_write,
- .flush_chars = dz_flush_chars,
- .write_room = dz_write_room,
- .chars_in_buffer = dz_chars_in_buffer,
- .flush_buffer = dz_flush_buffer,
- .ioctl = dz_ioctl,
- .throttle = dz_throttle,
- .unthrottle = dz_unthrottle,
- .send_xchar = dz_send_xchar,
- .set_termios = dz_set_termios,
- .stop = dz_stop,
- .start = dz_start,
- .hangup = dz_hangup,
-};
-
-int __init dz_init(void)
-{
- int i, flags;
- struct dz_serial *info;
-
- serial_driver = alloc_tty_driver(DZ_NB_PORT);
- if (!serial_driver)
- return -ENOMEM;
-
- /* Setup base handler, and timer table. */
- init_bh(SERIAL_BH, do_serial_bh);
-
- show_serial_version();
-
- serial_driver->owner = THIS_MODULE;
- serial_driver->devfs_name = "tts/";
- serial_driver->name = "ttyS";
- serial_driver->major = TTY_MAJOR;
- serial_driver->minor_start = 64;
- serial_driver->type = TTY_DRIVER_TYPE_SERIAL;
- serial_driver->subtype = SERIAL_TYPE_NORMAL;
- serial_driver->init_termios = tty_std_termios;
- serial_driver->init_termios.c_cflag = B9600 | CS8 | CREAD | HUPCL |
- CLOCAL;
- serial_driver->flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_NO_DEVFS;
- tty_set_operations(serial_driver, &serial_ops);
-
- if (tty_register_driver(serial_driver))
- panic("Couldn't register serial driver\n");
-
- save_flags(flags); cli();
- for (i=0; i < DZ_NB_PORT; i++) {
- info = &multi[i];
- lines[i] = info;
- info->magic = SERIAL_MAGIC;
-
- if ((mips_machtype == MACH_DS23100) ||
- (mips_machtype == MACH_DS5100))
- info->port = (unsigned long) KN01_DZ11_BASE;
- else
- info->port = (unsigned long) KN02_DZ11_BASE;
-
- info->line = i;
- info->tty = 0;
- info->close_delay = 50;
- info->closing_wait = 3000;
- info->x_char = 0;
- info->event = 0;
- info->count = 0;
- info->blocked_open = 0;
- info->tqueue.routine = do_softint;
- info->tqueue.data = info;
- info->tqueue_hangup.routine = do_serial_hangup;
- info->tqueue_hangup.data = info;
- init_waitqueue_head(&info->open_wait);
- init_waitqueue_head(&info->close_wait);
-
- /*
- * If we are pointing to address zero then punt - not correctly
- * set up in setup.c to handle this.
- */
- if (! info->port)
- return 0;
-
- printk("ttyS%02d at 0x%08x (irq = %d)\n", info->line,
- info->port, SERIAL);
-
- tty_register_device(serial_driver, info->line, NULL);
- }
-
- /* Reset the chip */
-#ifndef CONFIG_SERIAL_CONSOLE
- {
- int tmp;
- dz_out(info, DZ_CSR, DZ_CLR);
- while ((tmp = dz_in(info,DZ_CSR)) & DZ_CLR);
- wbflush();
-
- /* Enable scanning */
- dz_out(info, DZ_CSR, DZ_MSE);
- }
-#endif
-
- /*
- * Order matters here... the trick is that flags is updated... in
- * request_irq - to immediatedly obliterate it is unwise.
- */
- restore_flags(flags);
-
- if (request_irq(SERIAL, dz_interrupt, SA_INTERRUPT, "DZ", lines[0]))
- panic("Unable to register DZ interrupt\n");
-
- return 0;
-}
-
-#ifdef CONFIG_SERIAL_CONSOLE
-static void dz_console_put_char (unsigned char ch)
-{
- unsigned long flags;
- int loops = 2500;
- unsigned short tmp = ch;
- /*
- * this code sends stuff out to serial device - spinning its wheels and
- * waiting.
- */
-
- /* force the issue - point it at lines[3]*/
- dz_console = &multi[CONSOLE_LINE];
-
- save_and_cli(flags);
-
- /* spin our wheels */
- while (((dz_in(dz_console, DZ_CSR) & DZ_TRDY) != DZ_TRDY) && loops--)
- ;
-
- /* Actually transmit the character. */
- dz_out(dz_console, DZ_TDR, tmp);
-
- restore_flags(flags);
-}
-
-/*
- * -------------------------------------------------------------------
- * dz_console_print ()
- *
- * dz_console_print is registered for printk.
- * The console must be locked when we get here.
- * -------------------------------------------------------------------
- */
-static void dz_console_print (struct console *cons,
- const char *str,
- unsigned int count)
-{
-#ifdef DEBUG_DZ
- prom_printf((char *)str);
-#endif
- while (count--) {
- if (*str == '\n')
- dz_console_put_char('\r');
- dz_console_put_char(*str++);
- }
-}
-
-static struct tty_driver *dz_console_device(struct console *c, int *index)
-{
- *index = c->index;
- return serial_driver;
-}
-
-static int __init dz_console_setup(struct console *co, char *options)
-{
- int baud = 9600;
- int bits = 8;
- int parity = 'n';
- int cflag = CREAD | HUPCL | CLOCAL;
- char *s;
- unsigned short mask,tmp;
-
- if (options) {
- baud = simple_strtoul(options, NULL, 10);
- s = options;
- while (*s >= '0' && *s <= '9')
- s++;
- if (*s)
- parity = *s++;
- if (*s)
- bits = *s - '0';
- }
-
- /*
- * Now construct a cflag setting.
- */
- switch (baud) {
- case 1200:
- cflag |= DZ_B1200;
- break;
- case 2400:
- cflag |= DZ_B2400;
- break;
- case 4800:
- cflag |= DZ_B4800;
- break;
- case 9600:
- default:
- cflag |= DZ_B9600;
- break;
- }
- switch (bits) {
- case 7:
- cflag |= DZ_CS7;
- break;
- default:
- case 8:
- cflag |= DZ_CS8;
- break;
- }
- switch (parity) {
- case 'o':
- case 'O':
- cflag |= DZ_PARODD;
- break;
- case 'e':
- case 'E':
- cflag |= DZ_PARENB;
- break;
- }
- co->cflag = cflag;
-
- /* TOFIX: force to console line */
- dz_console = &multi[CONSOLE_LINE];
- if ((mips_machtype == MACH_DS23100) || (mips_machtype == MACH_DS5100))
- dz_console->port = KN01_DZ11_BASE;
- else
- dz_console->port = KN02_DZ11_BASE;
- dz_console->line = CONSOLE_LINE;
-
- dz_out(dz_console, DZ_CSR, DZ_CLR);
- while ((tmp = dz_in(dz_console,DZ_CSR)) & DZ_CLR)
- ;
-
- /* enable scanning */
- dz_out(dz_console, DZ_CSR, DZ_MSE);
-
- /* Set up flags... */
- dz_console->cflags = 0;
- dz_console->cflags |= DZ_B9600;
- dz_console->cflags |= DZ_CS8;
- dz_console->cflags |= DZ_PARENB;
- dz_out(dz_console, DZ_LPR, dz_console->cflags);
-
- mask = 1 << dz_console->line;
- tmp = dz_in (dz_console, DZ_TCR); /* read the TX flag */
- if (!(tmp & mask)) {
- tmp |= mask; /* set the TX flag */
- dz_out (dz_console, DZ_TCR, tmp);
- }
-
- return 0;
-}
-
-static struct console dz_sercons = {
- .name = "ttyS",
- .write = dz_console_print,
- .device = dz_console_device,
- .setup = dz_console_setup,
- .flags = CON_CONSDEV | CON_PRINTBUFFER,
- .index = CONSOLE_LINE,
-};
-
-void __init dz_serial_console_init(void)
-{
- register_console(&dz_sercons);
-}
-
-#endif /* ifdef CONFIG_SERIAL_CONSOLE */
-
-MODULE_LICENSE("GPL");
+++ /dev/null
-/*
- * dz.h: Serial port driver for DECStations equiped
- * with the DZ chipset.
- *
- * Copyright (C) 1998 Olivier A. D. Lebaillif
- *
- * Email: olivier.lebaillif@ifrsys.com
- *
- */
-#ifndef DZ_SERIAL_H
-#define DZ_SERIAL_H
-
-/*
- * Definitions for the Control and Status Received.
- */
-#define DZ_TRDY 0x8000 /* Transmitter empty */
-#define DZ_TIE 0x4000 /* Transmitter Interrupt Enable */
-#define DZ_RDONE 0x0080 /* Receiver data ready */
-#define DZ_RIE 0x0040 /* Receive Interrupt Enable */
-#define DZ_MSE 0x0020 /* Master Scan Enable */
-#define DZ_CLR 0x0010 /* Master reset */
-#define DZ_MAINT 0x0008 /* Loop Back Mode */
-
-/*
- * Definitions for the Received buffer.
- */
-#define DZ_RBUF_MASK 0x00FF /* Data Mask in the Receive Buffer */
-#define DZ_LINE_MASK 0x0300 /* Line Mask in the Receive Buffer */
-#define DZ_DVAL 0x8000 /* Valid Data indicator */
-#define DZ_OERR 0x4000 /* Overrun error indicator */
-#define DZ_FERR 0x2000 /* Frame error indicator */
-#define DZ_PERR 0x1000 /* Parity error indicator */
-
-#define LINE(x) (x & DZ_LINE_MASK) >> 8 /* Get the line number from the input buffer */
-#define UCHAR(x) (unsigned char)(x & DZ_RBUF_MASK)
-
-/*
- * Definitions for the Transmit Register.
- */
-#define DZ_LINE_KEYBOARD 0x0001
-#define DZ_LINE_MOUSE 0x0002
-#define DZ_LINE_MODEM 0x0004
-#define DZ_LINE_PRINTER 0x0008
-
-#define DZ_MODEM_DTR 0x0400 /* DTR for the modem line (2) */
-
-/*
- * Definitions for the Modem Status Register.
- */
-#define DZ_MODEM_DSR 0x0200 /* DSR for the modem line (2) */
-
-/*
- * Definitions for the Transmit Data Register.
- */
-#define DZ_BRK0 0x0100 /* Break assertion for line 0 */
-#define DZ_BRK1 0x0200 /* Break assertion for line 1 */
-#define DZ_BRK2 0x0400 /* Break assertion for line 2 */
-#define DZ_BRK3 0x0800 /* Break assertion for line 3 */
-
-/*
- * Definitions for the Line Parameter Register.
- */
-#define DZ_KEYBOARD 0x0000 /* line 0 = keyboard */
-#define DZ_MOUSE 0x0001 /* line 1 = mouse */
-#define DZ_MODEM 0x0002 /* line 2 = modem */
-#define DZ_PRINTER 0x0003 /* line 3 = printer */
-
-#define DZ_CSIZE 0x0018 /* Number of bits per byte (mask) */
-#define DZ_CS5 0x0000 /* 5 bits per byte */
-#define DZ_CS6 0x0008 /* 6 bits per byte */
-#define DZ_CS7 0x0010 /* 7 bits per byte */
-#define DZ_CS8 0x0018 /* 8 bits per byte */
-
-#define DZ_CSTOPB 0x0020 /* 2 stop bits instead of one */
-
-#define DZ_PARENB 0x0040 /* Parity enable */
-#define DZ_PARODD 0x0080 /* Odd parity instead of even */
-
-#define DZ_CBAUD 0x0E00 /* Baud Rate (mask) */
-#define DZ_B50 0x0000
-#define DZ_B75 0x0100
-#define DZ_B110 0x0200
-#define DZ_B134 0x0300
-#define DZ_B150 0x0400
-#define DZ_B300 0x0500
-#define DZ_B600 0x0600
-#define DZ_B1200 0x0700
-#define DZ_B1800 0x0800
-#define DZ_B2000 0x0900
-#define DZ_B2400 0x0A00
-#define DZ_B3600 0x0B00
-#define DZ_B4800 0x0C00
-#define DZ_B7200 0x0D00
-#define DZ_B9600 0x0E00
-
-#define DZ_CREAD 0x1000 /* Enable receiver */
-#define DZ_RXENAB 0x1000 /* enable receive char */
-/*
- * Addresses for the DZ registers
- */
-#define DZ_CSR 0x00 /* Control and Status Register */
-#define DZ_RBUF 0x08 /* Receive Buffer */
-#define DZ_LPR 0x08 /* Line Parameters Register */
-#define DZ_TCR 0x10 /* Transmitter Control Register */
-#define DZ_MSR 0x18 /* Modem Status Register */
-#define DZ_TDR 0x18 /* Transmit Data Register */
-
-
-#define DZ_NB_PORT 4
-
-#define DZ_XMIT_SIZE 4096 /* buffer size */
-#define WAKEUP_CHARS DZ_XMIT_SIZE/4
-
-#define DZ_EVENT_WRITE_WAKEUP 0
-
-#ifndef MIN
-#define MIN(a,b) ((a) < (b) ? (a) : (b))
-
-#define DZ_INITIALIZED 0x80000000 /* Serial port was initialized */
-#define DZ_CALLOUT_ACTIVE 0x40000000 /* Call out device is active */
-#define DZ_NORMAL_ACTIVE 0x20000000 /* Normal device is active */
-#define DZ_BOOT_AUTOCONF 0x10000000 /* Autoconfigure port on bootup */
-#define DZ_CLOSING 0x08000000 /* Serial port is closing */
-#define DZ_CTS_FLOW 0x04000000 /* Do CTS flow control */
-#define DZ_CHECK_CD 0x02000000 /* i.e., CLOCAL */
-
-#define DZ_CLOSING_WAIT_INF 0
-#define DZ_CLOSING_WAIT_NONE 65535
-
-#define DZ_SPLIT_TERMIOS 0x0008 /* Separate termios for dialin/callout */
-#define DZ_SESSION_LOCKOUT 0x0100 /* Lock out cua opens based on session */
-#define DZ_PGRP_LOCKOUT 0x0200 /* Lock out cua opens based on pgrp */
-
-struct dz_serial {
- unsigned port; /* base address for the port */
- int type;
- int flags;
- int baud_base;
- int blocked_open;
- unsigned short close_delay;
- unsigned short closing_wait;
- unsigned short line; /* port/line number */
- unsigned short cflags; /* line configuration flag */
- unsigned short x_char; /* xon/xoff character */
- unsigned short read_status_mask; /* mask for read condition */
- unsigned short ignore_status_mask; /* mask for ignore condition */
- unsigned long event; /* mask used in BH */
- unsigned char *xmit_buf; /* Transmit buffer */
- int xmit_head; /* Position of the head */
- int xmit_tail; /* Position of the tail */
- int xmit_cnt; /* Count of the chars in the buffer */
- int count; /* indicates how many times it has been opened */
- int magic;
-
- struct async_icount icount; /* keep track of things ... */
- struct tty_struct *tty; /* tty associated */
- struct tq_struct tqueue; /* Queue for BH */
- struct tq_struct tqueue_hangup;
- wait_queue_head_t open_wait;
- wait_queue_head_t close_wait;
-
- unsigned char is_console; /* flag indicating a serial console */
- unsigned char is_initialized;
-};
-
-static struct dz_serial multi[DZ_NB_PORT]; /* Four serial lines in the DZ chip */
-static struct dz_serial *dz_console;
-
-/*
- * tmp_buf is used as a temporary buffer by serial_write. We need to
- * lock it in case the copy_from_user blocks while swapping in a page,
- * and some other program tries to do a serial write at the same time.
- * Since the lock will only come under contention when the system is
- * swapping and available memory is low, it makes sense to share one
- * buffer across all the serial ports, since it significantly saves
- * memory if large numbers of serial ports are open.
- */
-static unsigned char *tmp_buf;
-static DECLARE_MUTEX(tmp_buf_sem);
-
-static char *dz_name = "DECstation DZ serial driver version ";
-static char *dz_version = "1.02";
-
-static inline unsigned short dz_in (struct dz_serial *, unsigned);
-static inline void dz_out (struct dz_serial *, unsigned, unsigned short);
-
-static inline void dz_sched_event (struct dz_serial *, int);
-static inline void receive_chars (struct dz_serial *);
-static inline void transmit_chars (struct dz_serial *);
-static inline void check_modem_status (struct dz_serial *);
-
-static void dz_stop (struct tty_struct *);
-static void dz_start (struct tty_struct *);
-static void dz_interrupt (int, void *, struct pt_regs *);
-static void do_serial_bh (void);
-static void do_softint (void *);
-static void do_serial_hangup (void *);
-static void change_speed (struct dz_serial *);
-static void dz_flush_chars (struct tty_struct *);
-static void dz_console_print (struct console *, const char *, unsigned int);
-static void dz_flush_buffer (struct tty_struct *);
-static void dz_throttle (struct tty_struct *);
-static void dz_unthrottle (struct tty_struct *);
-static void dz_send_xchar (struct tty_struct *, char);
-static void shutdown (struct dz_serial *);
-static void send_break (struct dz_serial *, int);
-static void dz_set_termios (struct tty_struct *, struct termios *);
-static void dz_close (struct tty_struct *, struct file *);
-static void dz_hangup (struct tty_struct *);
-static void show_serial_version (void);
-
-static int dz_write (struct tty_struct *, int, const unsigned char *, int);
-static int dz_write_room (struct tty_struct *);
-static int dz_chars_in_buffer (struct tty_struct *);
-static int startup (struct dz_serial *);
-static int get_serial_info (struct dz_serial *, struct serial_struct *);
-static int set_serial_info (struct dz_serial *, struct serial_struct *);
-static int get_lsr_info (struct dz_serial *, unsigned int *);
-static int dz_ioctl (struct tty_struct *, struct file *, unsigned int, unsigned long);
-static int block_til_ready (struct tty_struct *, struct file *, struct dz_serial *);
-static int dz_open (struct tty_struct *, struct file *);
-
-#ifdef MODULE
-int init_module (void)
-void cleanup_module (void)
-#endif
-
-#endif
-
-#endif /* DZ_SERIAL_H */
+++ /dev/null
-/* $Id: sh-sci.c,v 1.16 2004/02/10 17:04:17 lethal Exp $
- *
- * linux/drivers/char/sh-sci.c
- *
- * SuperH on-chip serial module support. (SCI with no FIFO / with FIFO)
- * Copyright (C) 1999, 2000 Niibe Yutaka
- * Copyright (C) 2000 Sugioka Toshinobu
- * Modified to support multiple serial ports. Stuart Menefy (May 2000).
- * Modified to support SH7760 SCIF. Paul Mundt (Oct 2003).
- * Modified to support H8/300 Series. Yoshinori Sato (Feb 2004).
- *
- * TTY code is based on sx.c (Specialix SX driver) by:
- *
- * (C) 1998 R.E.Wolff@BitWizard.nl
- *
- */
-
-#include <linux/config.h>
-#include <linux/module.h>
-#include <linux/errno.h>
-#include <linux/signal.h>
-#include <linux/sched.h>
-#include <linux/timer.h>
-#include <linux/interrupt.h>
-#include <linux/tty.h>
-#include <linux/tty_flip.h>
-#include <linux/serial.h>
-#include <linux/major.h>
-#include <linux/string.h>
-#include <linux/fcntl.h>
-#include <linux/ptrace.h>
-#include <linux/ioport.h>
-#include <linux/mm.h>
-#include <linux/slab.h>
-#include <linux/init.h>
-#include <linux/delay.h>
-#if defined(CONFIG_SERIAL_CONSOLE) || defined(CONFIG_SH_KGDB_CONSOLE)
-#include <linux/console.h>
-#endif
-#ifdef CONFIG_CPU_FREQ
-#include <linux/notifier.h>
-#include <linux/cpufreq.h>
-#endif
-
-#include <asm/system.h>
-#include <asm/io.h>
-#include <asm/irq.h>
-#include <asm/uaccess.h>
-#include <asm/bitops.h>
-
-#include <linux/generic_serial.h>
-
-#ifdef CONFIG_SH_STANDARD_BIOS
-#include <asm/sh_bios.h>
-#endif
-
-#include "sh-sci.h"
-
-#ifdef CONFIG_SH_KGDB
-#include <asm/kgdb.h>
-
-int kgdb_sci_setup(void);
-static int kgdb_get_char(struct sci_port *port);
-static void kgdb_put_char(struct sci_port *port, char c);
-static void kgdb_handle_error(struct sci_port *port);
-static struct sci_port *kgdb_sci_port;
-
-#ifdef CONFIG_SH_KGDB_CONSOLE
-static struct console kgdbcons;
-void __init kgdb_console_init(void);
-#endif /* CONFIG_SH_KGDB_CONSOLE */
-
-#endif /* CONFIG_SH_KGDB */
-
-#ifdef CONFIG_SERIAL_CONSOLE
-static struct console sercons;
-static struct sci_port* sercons_port=0;
-static int sercons_baud;
-#ifdef CONFIG_MAGIC_SYSRQ
-#include <linux/sysrq.h>
-static int break_pressed;
-#endif /* CONFIG_MAGIC_SYSRQ */
-#endif /* CONFIG_SERIAL_CONSOLE */
-
-/* Function prototypes */
-static void sci_init_pins_sci(struct sci_port* port, unsigned int cflag);
-#ifndef SCI_ONLY
-static void sci_init_pins_scif(struct sci_port* port, unsigned int cflag);
-#if defined(CONFIG_CPU_SH3)
-static void sci_init_pins_irda(struct sci_port* port, unsigned int cflag);
-#endif
-#endif
-static void sci_disable_tx_interrupts(void *ptr);
-static void sci_enable_tx_interrupts(void *ptr);
-static void sci_disable_rx_interrupts(void *ptr);
-static void sci_enable_rx_interrupts(void *ptr);
-static int sci_get_CD(void *ptr);
-static void sci_shutdown_port(void *ptr);
-static int sci_set_real_termios(void *ptr);
-static void sci_hungup(void *ptr);
-static void sci_close(void *ptr);
-static int sci_chars_in_buffer(void *ptr);
-static int sci_request_irq(struct sci_port *port);
-static void sci_free_irq(struct sci_port *port);
-static int sci_init_drivers(void);
-
-static struct tty_driver *sci_driver;
-
-static struct sci_port sci_ports[SCI_NPORTS] = SCI_INIT;
-
-static int sci_debug = 0;
-
-#ifdef MODULE
-MODULE_PARM(sci_debug, "i");
-#endif
-
-#define dprintk(x...) do { if (sci_debug) printk(x); } while(0)
-
-#ifdef CONFIG_SERIAL_CONSOLE
-static void put_char(struct sci_port *port, char c)
-{
- unsigned long flags;
- unsigned short status;
-
- local_irq_save(flags);
-
- do
- status = sci_in(port, SCxSR);
- while (!(status & SCxSR_TDxE(port)));
-
- sci_out(port, SCxTDR, c);
- sci_in(port, SCxSR); /* Dummy read */
- sci_out(port, SCxSR, SCxSR_TDxE_CLEAR(port));
-
- local_irq_restore(flags);
-}
-#endif
-
-#if defined(CONFIG_SH_STANDARD_BIOS) || defined(CONFIG_SH_KGDB)
-
-static void handle_error(struct sci_port *port)
-{ /* Clear error flags */
- sci_out(port, SCxSR, SCxSR_ERROR_CLEAR(port));
-}
-
-static int get_char(struct sci_port *port)
-{
- unsigned long flags;
- unsigned short status;
- int c;
-
- local_irq_save(flags);
- do {
- status = sci_in(port, SCxSR);
- if (status & SCxSR_ERRORS(port)) {
- handle_error(port);
- continue;
- }
- } while (!(status & SCxSR_RDxF(port)));
- c = sci_in(port, SCxRDR);
- sci_in(port, SCxSR); /* Dummy read */
- sci_out(port, SCxSR, SCxSR_RDxF_CLEAR(port));
- local_irq_restore(flags);
-
- return c;
-}
-
-/* Taken from sh-stub.c of GDB 4.18 */
-static const char hexchars[] = "0123456789abcdef";
-
-static __inline__ char highhex(int x)
-{
- return hexchars[(x >> 4) & 0xf];
-}
-
-static __inline__ char lowhex(int x)
-{
- return hexchars[x & 0xf];
-}
-
-#endif /* CONFIG_SH_STANDARD_BIOS || CONFIG_SH_KGDB */
-
-/*
- * Send the packet in buffer. The host gets one chance to read it.
- * This routine does not wait for a positive acknowledge.
- */
-
-#ifdef CONFIG_SERIAL_CONSOLE
-static void put_string(struct sci_port *port, const char *buffer, int count)
-{
- int i;
- const unsigned char *p = buffer;
-
-#if defined(CONFIG_SH_STANDARD_BIOS) || defined(CONFIG_SH_KGDB)
- int checksum;
- int usegdb=0;
-
-#ifdef CONFIG_SH_STANDARD_BIOS
- /* This call only does a trap the first time it is
- * called, and so is safe to do here unconditionally
- */
- usegdb |= sh_bios_in_gdb_mode();
-#endif
-#ifdef CONFIG_SH_KGDB
- usegdb |= (kgdb_in_gdb_mode && (port == kgdb_sci_port));
-#endif
-
- if (usegdb) {
- /* $<packet info>#<checksum>. */
- do {
- unsigned char c;
- put_char(port, '$');
- put_char(port, 'O'); /* 'O'utput to console */
- checksum = 'O';
-
- for (i=0; i<count; i++) { /* Don't use run length encoding */
- int h, l;
-
- c = *p++;
- h = highhex(c);
- l = lowhex(c);
- put_char(port, h);
- put_char(port, l);
- checksum += h + l;
- }
- put_char(port, '#');
- put_char(port, highhex(checksum));
- put_char(port, lowhex(checksum));
- } while (get_char(port) != '+');
- } else
-#endif /* CONFIG_SH_STANDARD_BIOS || CONFIG_SH_KGDB */
- for (i=0; i<count; i++) {
- if (*p == 10)
- put_char(port, '\r');
- put_char(port, *p++);
- }
-}
-#endif /* CONFIG_SERIAL_CONSOLE */
-
-
-#ifdef CONFIG_SH_KGDB
-
-/* Is the SCI ready, ie is there a char waiting? */
-static int kgdb_is_char_ready(struct sci_port *port)
-{
- unsigned short status = sci_in(port, SCxSR);
-
- if (status & (SCxSR_ERRORS(port) | SCxSR_BRK(port)))
- kgdb_handle_error(port);
-
- return (status & SCxSR_RDxF(port));
-}
-
-/* Write a char */
-static void kgdb_put_char(struct sci_port *port, char c)
-{
- unsigned short status;
-
- do
- status = sci_in(port, SCxSR);
- while (!(status & SCxSR_TDxE(port)));
-
- sci_out(port, SCxTDR, c);
- sci_in(port, SCxSR); /* Dummy read */
- sci_out(port, SCxSR, SCxSR_TDxE_CLEAR(port));
-}
-
-/* Get a char if there is one, else ret -1 */
-static int kgdb_get_char(struct sci_port *port)
-{
- int c;
-
- if (kgdb_is_char_ready(port) == 0)
- c = -1;
- else {
- c = sci_in(port, SCxRDR);
- sci_in(port, SCxSR); /* Dummy read */
- sci_out(port, SCxSR, SCxSR_RDxF_CLEAR(port));
- }
-
- return c;
-}
-
-/* Called from kgdbstub.c to get a character, i.e. is blocking */
-static int kgdb_sci_getchar(void)
-{
- volatile int c;
-
- /* Keep trying to read a character, this could be neater */
- while ((c = kgdb_get_char(kgdb_sci_port)) < 0);
-
- return c;
-}
-
-/* Called from kgdbstub.c to put a character, just a wrapper */
-static void kgdb_sci_putchar(int c)
-{
-
- kgdb_put_char(kgdb_sci_port, c);
-}
-
-/* Clear any errors on the SCI */
-static void kgdb_handle_error(struct sci_port *port)
-{
- sci_out(port, SCxSR, SCxSR_ERROR_CLEAR(port)); /* Clear error flags */
-}
-
-/* Breakpoint if there's a break sent on the serial port */
-static void kgdb_break_interrupt(int irq, void *ptr, struct pt_regs *regs)
-{
- struct sci_port *port = ptr;
- unsigned short status = sci_in(port, SCxSR);
-
- if (status & SCxSR_BRK(port)) {
-
- /* Break into the debugger if a break is detected */
- BREAKPOINT();
-
- /* Clear */
- sci_out(port, SCxSR, SCxSR_BREAK_CLEAR(port));
- return;
- }
-}
-
-#endif /* CONFIG_SH_KGDB */
-
-static struct real_driver sci_real_driver = {
- sci_disable_tx_interrupts,
- sci_enable_tx_interrupts,
- sci_disable_rx_interrupts,
- sci_enable_rx_interrupts,
- sci_get_CD,
- sci_shutdown_port,
- sci_set_real_termios,
- sci_chars_in_buffer,
- sci_close,
- sci_hungup,
- NULL
-};
-
-#if !defined(__H8300H__) && !defined(__H8300S__)
-#if defined(SCI_ONLY) || defined(SCI_AND_SCIF)
-static void sci_init_pins_sci(struct sci_port* port, unsigned int cflag)
-{
-}
-#endif
-
-#if defined(SCIF_ONLY) || defined(SCI_AND_SCIF)
-#if defined(CONFIG_CPU_SH3)
-/* For SH7707, SH7709, SH7709A, SH7729 */
-static void sci_init_pins_scif(struct sci_port* port, unsigned int cflag)
-{
- unsigned int fcr_val = 0;
-
- {
- unsigned short data;
-
- /* We need to set SCPCR to enable RTS/CTS */
- data = ctrl_inw(SCPCR);
- /* Clear out SCP7MD1,0, SCP6MD1,0, SCP4MD1,0*/
- ctrl_outw(data&0x0cff, SCPCR);
- }
- if (cflag & CRTSCTS)
- fcr_val |= SCFCR_MCE;
- else {
- unsigned short data;
-
- /* We need to set SCPCR to enable RTS/CTS */
- data = ctrl_inw(SCPCR);
- /* Clear out SCP7MD1,0, SCP4MD1,0,
- Set SCP6MD1,0 = {01} (output) */
- ctrl_outw((data&0x0cff)|0x1000, SCPCR);
-
- data = ctrl_inb(SCPDR);
- /* Set /RTS2 (bit6) = 0 */
- ctrl_outb(data&0xbf, SCPDR);
- }
- sci_out(port, SCFCR, fcr_val);
-}
-
-static void sci_init_pins_irda(struct sci_port* port, unsigned int cflag)
-{
- unsigned int fcr_val = 0;
-
- if (cflag & CRTSCTS)
- fcr_val |= SCFCR_MCE;
-
- sci_out(port, SCFCR, fcr_val);
-}
-
-#else
-
-/* For SH7750 */
-static void sci_init_pins_scif(struct sci_port* port, unsigned int cflag)
-{
- unsigned int fcr_val = 0;
-
- if (cflag & CRTSCTS) {
- fcr_val |= SCFCR_MCE;
- } else {
- ctrl_outw(0x0080, SCSPTR2); /* Set RTS = 1 */
- }
- sci_out(port, SCFCR, fcr_val);
-}
-
-#endif
-#endif /* SCIF_ONLY || SCI_AND_SCIF */
-#else /* !defined(__H8300H__) && !defined(__H8300S__) */
-static void sci_init_pins_sci(struct sci_port* port, unsigned int cflag)
-{
- int ch = (port->base - SMR0) >> 3;
- /* set DDR regs */
- H8300_GPIO_DDR(h8300_sci_pins[ch].port,h8300_sci_pins[ch].rx,H8300_GPIO_INPUT);
- H8300_GPIO_DDR(h8300_sci_pins[ch].port,h8300_sci_pins[ch].tx,H8300_GPIO_OUTPUT);
- /* tx mark output*/
- H8300_SCI_DR(ch) |= h8300_sci_pins[ch].tx;
-}
-
-#if defined(__H8300S__)
-enum {sci_disable,sci_enable};
-
-static void h8300_sci_enable(struct sci_port* port, unsigned int ctrl)
-{
- volatile unsigned char *mstpcrl=(volatile unsigned char *)MSTPCRL;
- int ch = (port->base - SMR0) >> 3;
- unsigned char mask = 1 << (ch+1);
- if (ctrl == sci_disable)
- *mstpcrl |= mask;
- else
- *mstpcrl &= ~mask;
-}
-#endif
-#endif
-
-static void sci_setsignals(struct sci_port *port, int dtr, int rts)
-{
- /* This routine is used for seting signals of: DTR, DCD, CTS/RTS */
- /* We use SCIF's hardware for CTS/RTS, so don't need any for that. */
- /* If you have signals for DTR and DCD, please implement here. */
- ;
-}
-
-static int sci_getsignals(struct sci_port *port)
-{
- /* This routine is used for geting signals of: DTR, DCD, DSR, RI,
- and CTS/RTS */
-
- return TIOCM_DTR|TIOCM_RTS|TIOCM_DSR;
-/*
- (((o_stat & OP_DTR)?TIOCM_DTR:0) |
- ((o_stat & OP_RTS)?TIOCM_RTS:0) |
- ((i_stat & IP_CTS)?TIOCM_CTS:0) |
- ((i_stat & IP_DCD)?TIOCM_CAR:0) |
- ((i_stat & IP_DSR)?TIOCM_DSR:0) |
- ((i_stat & IP_RI) ?TIOCM_RNG:0)
-*/
-}
-
-static void sci_set_baud(struct sci_port *port, int baud)
-{
- int t;
-
- switch (baud) {
- case 0:
- t = -1;
- break;
- case 2400:
- t = BPS_2400;
- break;
- case 4800:
- t = BPS_4800;
- break;
- case 9600:
- t = BPS_9600;
- break;
- case 19200:
- t = BPS_19200;
- break;
- case 38400:
- t = BPS_38400;
- break;
- case 57600:
- t = BPS_57600;
- break;
- default:
- printk(KERN_INFO "sci: unsupported baud rate: %d, using 115200 instead.\n", baud);
- case 115200:
- t = BPS_115200;
- break;
- }
-
- if (t > 0) {
- sci_setsignals (port, 1, -1);
- if(t >= 256) {
- sci_out(port, SCSMR, (sci_in(port, SCSMR) & ~3) | 1);
- t >>= 2;
- } else {
- sci_out(port, SCSMR, sci_in(port, SCSMR) & ~3);
- }
- sci_out(port, SCBRR, t);
- udelay((1000000+(baud-1)) / baud); /* Wait one bit interval */
- } else {
- sci_setsignals (port, 0, -1);
- }
-}
-
-static void sci_set_termios_cflag(struct sci_port *port, int cflag, int baud)
-{
- unsigned int status;
- unsigned int smr_val;
-
- do
- status = sci_in(port, SCxSR);
- while (!(status & SCxSR_TEND(port)));
-
- sci_out(port, SCSCR, 0x00); /* TE=0, RE=0, CKE1=0 */
-
-#if !defined(SCI_ONLY)
- if (port->type == PORT_SCIF) {
- sci_out(port, SCFCR, SCFCR_RFRST | SCFCR_TFRST);
- }
-#endif
-
- smr_val = sci_in(port, SCSMR) & 3;
- if ((cflag & CSIZE) == CS7)
- smr_val |= 0x40;
- if (cflag & PARENB)
- smr_val |= 0x20;
- if (cflag & PARODD)
- smr_val |= 0x30;
- if (cflag & CSTOPB)
- smr_val |= 0x08;
- sci_out(port, SCSMR, smr_val);
- sci_set_baud(port, baud);
-
- port->init_pins(port, cflag);
- sci_out(port, SCSCR, SCSCR_INIT(port));
-}
-
-static int sci_set_real_termios(void *ptr)
-{
- struct sci_port *port = ptr;
-
- if (port->old_cflag != port->gs.tty->termios->c_cflag) {
- port->old_cflag = port->gs.tty->termios->c_cflag;
- sci_set_termios_cflag(port, port->old_cflag, port->gs.baud);
- sci_enable_rx_interrupts(port);
- }
-
- return 0;
-}
-
-/* ********************************************************************** *
- * the interrupt related routines *
- * ********************************************************************** */
-
-/*
- * This routine is used by the interrupt handler to schedule
- * processing in the software interrupt portion of the driver.
- */
-static inline void sci_sched_event(struct sci_port *port, int event)
-{
- port->event |= 1 << event;
- schedule_work(&port->tqueue);
-}
-
-static void sci_transmit_chars(struct sci_port *port)
-{
- int count, i;
- int txroom;
- unsigned long flags;
- unsigned short status;
- unsigned short ctrl;
- unsigned char c;
-
- status = sci_in(port, SCxSR);
- if (!(status & SCxSR_TDxE(port))) {
- local_irq_save(flags);
- ctrl = sci_in(port, SCSCR);
- if (port->gs.xmit_cnt == 0) {
- ctrl &= ~SCI_CTRL_FLAGS_TIE;
- port->gs.flags &= ~GS_TX_INTEN;
- } else
- ctrl |= SCI_CTRL_FLAGS_TIE;
- sci_out(port, SCSCR, ctrl);
- local_irq_restore(flags);
- return;
- }
-
- while (1) {
- count = port->gs.xmit_cnt;
-#if !defined(SCI_ONLY)
- if (port->type == PORT_SCIF) {
- txroom = 16 - (sci_in(port, SCFDR)>>8);
- } else {
- txroom = (sci_in(port, SCxSR) & SCI_TDRE)?1:0;
- }
-#else
- txroom = (sci_in(port, SCxSR) & SCI_TDRE)?1:0;
-#endif
- if (count > txroom)
- count = txroom;
-
- /* Don't copy past the end of the source buffer */
- if (count > SERIAL_XMIT_SIZE - port->gs.xmit_tail)
- count = SERIAL_XMIT_SIZE - port->gs.xmit_tail;
-
- /* If for one reason or another, we can't copy more data, we're done! */
- if (count == 0)
- break;
-
- for (i=0; i<count; i++) {
- c = port->gs.xmit_buf[port->gs.xmit_tail + i];
- sci_out(port, SCxTDR, c);
- }
- sci_out(port, SCxSR, SCxSR_TDxE_CLEAR(port));
-
- port->icount.tx += count;
-
- /* Update the kernel buffer end */
- port->gs.xmit_tail = (port->gs.xmit_tail + count) & (SERIAL_XMIT_SIZE-1);
-
- /* This one last. (this is essential)
- It would allow others to start putting more data into the buffer! */
- port->gs.xmit_cnt -= count;
- }
-
- if (port->gs.xmit_cnt <= port->gs.wakeup_chars)
- sci_sched_event(port, SCI_EVENT_WRITE_WAKEUP);
-
- local_irq_save(flags);
- ctrl = sci_in(port, SCSCR);
- if (port->gs.xmit_cnt == 0) {
- ctrl &= ~SCI_CTRL_FLAGS_TIE;
- port->gs.flags &= ~GS_TX_INTEN;
- } else {
-#if !defined(SCI_ONLY)
- if (port->type == PORT_SCIF) {
- sci_in(port, SCxSR); /* Dummy read */
- sci_out(port, SCxSR, SCxSR_TDxE_CLEAR(port));
- }
-#endif
- ctrl |= SCI_CTRL_FLAGS_TIE;
- }
- sci_out(port, SCSCR, ctrl);
- local_irq_restore(flags);
-}
-
-/* On SH3, SCIF may read end-of-break as a space->mark char */
-#define STEPFN(c) ({int __c=(c); (((__c-1)|(__c)) == -1); })
-
-static inline void sci_receive_chars(struct sci_port *port,
- struct pt_regs *regs)
-{
- int i, count;
- struct tty_struct *tty;
- int copied=0;
- unsigned short status;
-
- status = sci_in(port, SCxSR);
- if (!(status & SCxSR_RDxF(port)))
- return;
-
- tty = port->gs.tty;
- while (1) {
-#if !defined(SCI_ONLY)
- if (port->type == PORT_SCIF) {
- count = sci_in(port, SCFDR)&0x001f;
- } else {
- count = (sci_in(port, SCxSR)&SCxSR_RDxF(port))?1:0;
- }
-#else
- count = (sci_in(port, SCxSR)&SCxSR_RDxF(port))?1:0;
-#endif
-
- /* Don't copy more bytes than there is room for in the buffer */
- if (tty->flip.count + count > TTY_FLIPBUF_SIZE)
- count = TTY_FLIPBUF_SIZE - tty->flip.count;
-
- /* If for any reason we can't copy more data, we're done! */
- if (count == 0)
- break;
-
- if (port->type == PORT_SCI) {
- tty->flip.char_buf_ptr[0] = sci_in(port, SCxRDR);
- tty->flip.flag_buf_ptr[0] = TTY_NORMAL;
- } else {
- for (i=0; i<count; i++) {
- char c = sci_in(port, SCxRDR);
- status = sci_in(port, SCxSR);
-#if defined(__SH3__)
- /* Skip "chars" during break */
- if (port->break_flag) {
- if ((c == 0) &&
- (status & SCxSR_FER(port))) {
- count--; i--;
- continue;
- }
- /* Nonzero => end-of-break */
- dprintk("scif: debounce<%02x>\n", c);
- port->break_flag = 0;
- if (STEPFN(c)) {
- count--; i--;
- continue;
- }
- }
-#endif /* __SH3__ */
-#if defined(CONFIG_SERIAL_CONSOLE) && defined(CONFIG_MAGIC_SYSRQ)
- if (break_pressed && (port == sercons_port)) {
- if (c != 0 &&
- time_before(jiffies,
- break_pressed + HZ*5)) {
- handle_sysrq(c, regs, NULL);
- break_pressed = 0;
- count--; i--;
- continue;
- } else if (c != 0) {
- break_pressed = 0;
- }
- }
-#endif /* CONFIG_SERIAL_CONSOLE && CONFIG_MAGIC_SYSRQ */
-
- /* Store data and status */
- tty->flip.char_buf_ptr[i] = c;
- if (status&SCxSR_FER(port)) {
- tty->flip.flag_buf_ptr[i] = TTY_FRAME;
- dprintk("sci: frame error\n");
- } else if (status&SCxSR_PER(port)) {
- tty->flip.flag_buf_ptr[i] = TTY_PARITY;
- dprintk("sci: parity error\n");
- } else {
- tty->flip.flag_buf_ptr[i] = TTY_NORMAL;
- }
- }
- }
-
- sci_in(port, SCxSR); /* dummy read */
- sci_out(port, SCxSR, SCxSR_RDxF_CLEAR(port));
-
- /* Update the kernel buffer end */
- tty->flip.count += count;
- tty->flip.char_buf_ptr += count;
- tty->flip.flag_buf_ptr += count;
-
- copied += count;
- port->icount.rx += count;
- }
-
- if (copied)
- /* Tell the rest of the system the news. New characters! */
- tty_flip_buffer_push(tty);
- else {
- sci_in(port, SCxSR); /* dummy read */
- sci_out(port, SCxSR, SCxSR_RDxF_CLEAR(port));
- }
-}
-
-static inline int sci_handle_errors(struct sci_port *port)
-{
- int copied = 0;
- unsigned short status = sci_in(port, SCxSR);
- struct tty_struct *tty = port->gs.tty;
-
- if (status&SCxSR_ORER(port) && tty->flip.count<TTY_FLIPBUF_SIZE) {
- /* overrun error */
- copied++;
- *tty->flip.flag_buf_ptr++ = TTY_OVERRUN;
- dprintk("sci: overrun error\n");
- }
-
- if (status&SCxSR_FER(port) && tty->flip.count<TTY_FLIPBUF_SIZE) {
- if (sci_rxd_in(port) == 0) {
- /* Notify of BREAK */
- copied++;
- *tty->flip.flag_buf_ptr++ = TTY_BREAK;
- dprintk("sci: BREAK detected\n");
- }
- else {
- /* frame error */
- copied++;
- *tty->flip.flag_buf_ptr++ = TTY_FRAME;
- dprintk("sci: frame error\n");
- }
- }
-
- if (status&SCxSR_PER(port) && tty->flip.count<TTY_FLIPBUF_SIZE) {
- /* parity error */
- copied++;
- *tty->flip.flag_buf_ptr++ = TTY_PARITY;
- dprintk("sci: parity error\n");
- }
-
- if (copied) {
- tty->flip.count += copied;
- tty_flip_buffer_push(tty);
- }
-
- return copied;
-}
-
-static inline int sci_handle_breaks(struct sci_port *port)
-{
- int copied = 0;
- unsigned short status = sci_in(port, SCxSR);
- struct tty_struct *tty = port->gs.tty;
-
- if (status&SCxSR_BRK(port) && tty->flip.count<TTY_FLIPBUF_SIZE) {
-#if defined(__SH3__)
- /* Debounce break */
- if (port->break_flag)
- goto break_continue;
- port->break_flag = 1;
-#endif
-#if defined(CONFIG_SERIAL_CONSOLE) && defined(CONFIG_MAGIC_SYSRQ)
- if (port == sercons_port) {
- if (break_pressed == 0) {
- break_pressed = jiffies;
- dprintk("sci: implied sysrq\n");
- goto break_continue;
- }
- /* Double break implies a real break */
- break_pressed = 0;
- }
-#endif
- /* Notify of BREAK */
- copied++;
- *tty->flip.flag_buf_ptr++ = TTY_BREAK;
- dprintk("sci: BREAK detected\n");
- }
- break_continue:
-
-#if defined(CONFIG_CPU_SUBTYPE_SH7750) || defined(CONFIG_CPU_SUBTYPE_ST40STB1) || \
- defined(CONFIG_CPU_SUBTYPE_SH7760)
- /* XXX: Handle SCIF overrun error */
- if (port->type == PORT_SCIF && (sci_in(port, SCLSR) & SCIF_ORER) != 0) {
- sci_out(port, SCLSR, 0);
- if(tty->flip.count<TTY_FLIPBUF_SIZE) {
- copied++;
- *tty->flip.flag_buf_ptr++ = TTY_OVERRUN;
- dprintk("sci: overrun error\n");
- }
- }
-#endif
-
- if (copied) {
- tty->flip.count += copied;
- tty_flip_buffer_push(tty);
- }
-
- return copied;
-}
-
-static irqreturn_t sci_rx_interrupt(int irq, void *ptr, struct pt_regs *regs)
-{
- struct sci_port *port = ptr;
-
- if (port->gs.flags & GS_ACTIVE)
- if (!(port->gs.flags & SCI_RX_THROTTLE)) {
- sci_receive_chars(port, regs);
- return IRQ_HANDLED;
-
- }
- sci_disable_rx_interrupts(port);
-
- return IRQ_HANDLED;
-}
-
-static irqreturn_t sci_tx_interrupt(int irq, void *ptr, struct pt_regs *regs)
-{
- struct sci_port *port = ptr;
-
- if (port->gs.flags & GS_ACTIVE)
- sci_transmit_chars(port);
- else {
- sci_disable_tx_interrupts(port);
- }
-
- return IRQ_HANDLED;
-}
-
-static irqreturn_t sci_er_interrupt(int irq, void *ptr, struct pt_regs *regs)
-{
- struct sci_port *port = ptr;
-
- /* Handle errors */
- if (port->type == PORT_SCI) {
- if(sci_handle_errors(port)) {
- /* discard character in rx buffer */
- sci_in(port, SCxSR);
- sci_out(port, SCxSR, SCxSR_RDxF_CLEAR(port));
- }
- }
- else
- sci_rx_interrupt(irq, ptr, regs);
-
- sci_out(port, SCxSR, SCxSR_ERROR_CLEAR(port));
-
- /* Kick the transmission */
- sci_tx_interrupt(irq, ptr, regs);
-
- return IRQ_HANDLED;
-}
-
-#if !defined(SCI_ONLY)
-static irqreturn_t sci_br_interrupt(int irq, void *ptr, struct pt_regs *regs)
-{
- struct sci_port *port = ptr;
-
- /* Handle BREAKs */
- sci_handle_breaks(port);
- sci_out(port, SCxSR, SCxSR_BREAK_CLEAR(port));
-
- return IRQ_HANDLED;
-}
-#endif
-
-static void do_softint(void *private_)
-{
- struct sci_port *port = (struct sci_port *) private_;
- struct tty_struct *tty;
-
- tty = port->gs.tty;
- if (!tty)
- return;
-
- if (test_and_clear_bit(SCI_EVENT_WRITE_WAKEUP, &port->event)) {
- if ((tty->flags & (1 << TTY_DO_WRITE_WAKEUP)) &&
- tty->ldisc.write_wakeup)
- (tty->ldisc.write_wakeup)(tty);
- wake_up_interruptible(&tty->write_wait);
- }
-}
-
-/* ********************************************************************** *
- * Here are the routines that actually *
- * interface with the generic_serial driver *
- * ********************************************************************** */
-
-static void sci_disable_tx_interrupts(void *ptr)
-{
- struct sci_port *port = ptr;
- unsigned long flags;
- unsigned short ctrl;
-
- /* Clear TIE (Transmit Interrupt Enable) bit in SCSCR */
- local_irq_save(flags);
- ctrl = sci_in(port, SCSCR);
- ctrl &= ~SCI_CTRL_FLAGS_TIE;
- sci_out(port, SCSCR, ctrl);
- local_irq_restore(flags);
-}
-
-static void sci_enable_tx_interrupts(void *ptr)
-{
- struct sci_port *port = ptr;
-
- disable_irq(port->irqs[SCIx_TXI_IRQ]);
- sci_transmit_chars(port);
- enable_irq(port->irqs[SCIx_TXI_IRQ]);
-}
-
-static void sci_disable_rx_interrupts(void * ptr)
-{
- struct sci_port *port = ptr;
- unsigned long flags;
- unsigned short ctrl;
-
- /* Clear RIE (Receive Interrupt Enable) bit in SCSCR */
- local_irq_save(flags);
- ctrl = sci_in(port, SCSCR);
- ctrl &= ~SCI_CTRL_FLAGS_RIE;
- sci_out(port, SCSCR, ctrl);
- local_irq_restore(flags);
-}
-
-static void sci_enable_rx_interrupts(void * ptr)
-{
- struct sci_port *port = ptr;
- unsigned long flags;
- unsigned short ctrl;
-
- /* Set RIE (Receive Interrupt Enable) bit in SCSCR */
- local_irq_save(flags);
- ctrl = sci_in(port, SCSCR);
- ctrl |= SCI_CTRL_FLAGS_RIE;
- sci_out(port, SCSCR, ctrl);
- local_irq_restore(flags);
-}
-
-static int sci_get_CD(void * ptr)
-{
- /* If you have signal for CD (Carrier Detect), please change here. */
- return 1;
-}
-
-static int sci_chars_in_buffer(void * ptr)
-{
- struct sci_port *port = ptr;
-
-#if !defined(SCI_ONLY)
- if (port->type == PORT_SCIF) {
- return (sci_in(port, SCFDR) >> 8) + ((sci_in(port, SCxSR) & SCxSR_TEND(port))? 0: 1);
- } else {
- return (sci_in(port, SCxSR) & SCxSR_TEND(port))? 0: 1;
- }
-#else
- return (sci_in(port, SCxSR) & SCxSR_TEND(port))? 0: 1;
-#endif
-}
-
-static void sci_shutdown_port(void * ptr)
-{
- struct sci_port *port = ptr;
-
- port->gs.flags &= ~ GS_ACTIVE;
- if (port->gs.tty && port->gs.tty->termios->c_cflag & HUPCL)
- sci_setsignals(port, 0, 0);
- sci_free_irq(port);
-#if defined(__H8300S__)
- h8300_sci_enable(port,sci_disable);
-#endif
-}
-
-/* ********************************************************************** *
- * Here are the routines that actually *
- * interface with the rest of the system *
- * ********************************************************************** */
-
-static int sci_open(struct tty_struct * tty, struct file * filp)
-{
- struct sci_port *port;
- int retval, line;
-
- line = tty->index;
-
- if ((line < 0) || (line >= SCI_NPORTS))
- return -ENODEV;
-
- port = &sci_ports[line];
-
- tty->driver_data = port;
- port->gs.tty = tty;
- port->gs.count++;
-
- port->event = 0;
- INIT_WORK(&port->tqueue, do_softint, port);
-
-#if defined(__H8300S__)
- h8300_sci_enable(port,sci_enable);
-#endif
-
- /*
- * Start up serial port
- */
- retval = gs_init_port(&port->gs);
- if (retval) {
- goto failed_1;
- }
-
- port->gs.flags |= GS_ACTIVE;
- sci_setsignals(port, 1,1);
-
- if (port->gs.count == 1) {
- retval = sci_request_irq(port);
- }
-
- retval = gs_block_til_ready(port, filp);
-
- if (retval) {
- goto failed_3;
- }
-
-#ifdef CONFIG_SERIAL_CONSOLE
- if (sercons.cflag && sercons.index == line) {
- tty->termios->c_cflag = sercons.cflag;
- port->gs.baud = sercons_baud;
- sercons.cflag = 0;
- sci_set_real_termios(port);
- }
-#endif
-
-#ifdef CONFIG_SH_KGDB_CONSOLE
- if (kgdbcons.cflag && kgdbcons.index == line) {
- tty->termios->c_cflag = kgdbcons.cflag;
- port->gs.baud = kgdb_baud;
- sercons.cflag = 0;
- sci_set_real_termios(port);
- }
-#endif
-
- sci_enable_rx_interrupts(port);
-
- return 0;
-
-failed_3:
- sci_free_irq(port);
-failed_1:
- port->gs.count--;
- return retval;
-}
-
-static void sci_hungup(void *ptr)
-{
- return;
-}
-
-static void sci_close(void *ptr)
-{
- return;
-}
-
-static int sci_tiocmget(struct tty_struct *tty, struct file *file)
-{
- struct sci_port *port = tty->driver_data;
- return sci_getsignals(port);
-}
-
-static int sci_tiocmset(struct tty_struct *tty, struct file *file,
- unsigned int set, unsigned int clear)
-{
- struct sci_port *port = tty->driver_data;
- int rts = -1, dtr = -1;
-
- if (set & TIOCM_RTS)
- rts = 1;
- if (set & TIOCM_DTR)
- dtr = 1;
- if (clear & TIOCM_RTS)
- rts = 0;
- if (clear & TIOCM_DTR)
- dtr = 0;
-
- sci_setsignals(port, dtr, rts);
- return 0;
-}
-
-static int sci_ioctl(struct tty_struct * tty, struct file * filp,
- unsigned int cmd, unsigned long arg)
-{
- int rc;
- struct sci_port *port = tty->driver_data;
- int ival;
-
- rc = 0;
- switch (cmd) {
- case TIOCGSOFTCAR:
- rc = put_user(((tty->termios->c_cflag & CLOCAL) ? 1 : 0),
- (unsigned int __user *) arg);
- break;
- case TIOCSSOFTCAR:
- if ((rc = get_user(ival, (unsigned int __user *) arg)) == 0)
- tty->termios->c_cflag =
- (tty->termios->c_cflag & ~CLOCAL) |
- (ival ? CLOCAL : 0);
- break;
- case TIOCGSERIAL:
- if ((rc = verify_area(VERIFY_WRITE, (void __user *) arg,
- sizeof(struct serial_struct))) == 0)
- rc = gs_getserial(&port->gs, (struct serial_struct *) arg);
- break;
- case TIOCSSERIAL:
- if ((rc = verify_area(VERIFY_READ, (void __user *) arg,
- sizeof(struct serial_struct))) == 0)
- rc = gs_setserial(&port->gs,
- (struct serial_struct *) arg);
- break;
- default:
- rc = -ENOIOCTLCMD;
- break;
- }
-
- return rc;
-}
-
-static void sci_throttle(struct tty_struct * tty)
-{
- struct sci_port *port = (struct sci_port *)tty->driver_data;
-
- /* If the port is using any type of input flow
- * control then throttle the port.
- */
- if ((tty->termios->c_cflag & CRTSCTS) || (I_IXOFF(tty)) )
- port->gs.flags |= SCI_RX_THROTTLE;
-}
-
-static void sci_unthrottle(struct tty_struct * tty)
-{
- struct sci_port *port = (struct sci_port *)tty->driver_data;
-
- /* Always unthrottle even if flow control is not enabled on
- * this port in case we disabled flow control while the port
- * was throttled
- */
- port->gs.flags &= ~SCI_RX_THROTTLE;
- sci_enable_rx_interrupts(port);
- return;
-}
-
-#ifdef CONFIG_PROC_FS
-static int sci_read_proc(char *page, char **start, off_t off, int count,
- int *eof, void *data)
-{
- int i;
- struct sci_port *port;
- int len = 0;
-
- len += sprintf(page, "sciinfo:0.1\n");
- for (i = 0; i < SCI_NPORTS && len < 4000; i++) {
- port = &sci_ports[i];
- len += sprintf(page+len, "%d: uart:%s address: %08x", i,
- (port->type == PORT_SCI) ? "SCI" : "SCIF",
- port->base);
- len += sprintf(page+len, " baud:%d", port->gs.baud);
- len += sprintf(page+len, " tx:%d rx:%d",
- port->icount.tx, port->icount.rx);
-
- if (port->icount.frame)
- len += sprintf(page+len, " fe:%d", port->icount.frame);
- if (port->icount.parity)
- len += sprintf(page+len, " pe:%d", port->icount.parity);
- if (port->icount.brk)
- len += sprintf(page+len, " brk:%d", port->icount.brk);
- if (port->icount.overrun)
- len += sprintf(page+len, " oe:%d", port->icount.overrun);
- len += sprintf(page+len, "\n");
- }
- return len;
-}
-#endif
-
-#ifdef CONFIG_CPU_FREQ
-/*
- * Here we define a transistion notifier so that we can update all of our
- * ports' baud rate when the peripheral clock changes.
- */
-
-static int sci_notifier(struct notifier_block *self, unsigned long phase, void *p)
-{
- struct cpufreq_freqs *freqs = p;
- int i;
-
- if (phase == CPUFREQ_POSTCHANGE) {
- for (i = 0; i < SCI_NPORTS; i++) {
- /*
- * This will force a baud rate change in hardware.
- */
- if (sci_ports[i].gs.tty != NULL) {
- sci_set_baud(&sci_ports[i], sci_ports[i].gs.baud);
- }
- }
- printk("%s: got a postchange notification for cpu %d (old %d, new %d)\n",
- __FUNCTION__, freqs->cpu, freqs->old, freqs->new);
- }
-
- return NOTIFY_OK;
-}
-
-static struct notifier_block sci_nb = { &sci_notifier, NULL, 0 };
-#endif /* CONFIG_CPU_FREQ */
-
-static struct tty_operations sci_ops = {
- .open = sci_open,
- .close = gs_close,
- .write = gs_write,
- .put_char = gs_put_char,
- .flush_chars = gs_flush_chars,
- .write_room = gs_write_room,
- .chars_in_buffer = gs_chars_in_buffer,
- .flush_buffer = gs_flush_buffer,
- .ioctl = sci_ioctl,
- .throttle = sci_throttle,
- .unthrottle = sci_unthrottle,
- .set_termios = gs_set_termios,
- .stop = gs_stop,
- .start = gs_start,
- .hangup = gs_hangup,
-#ifdef CONFIG_PROC_FS
- .read_proc = sci_read_proc,
-#endif
- .tiocmget = sci_tiocmget,
- .tiocmset = sci_tiocmset,
-};
-
-/* ********************************************************************** *
- * Here are the initialization routines. *
- * ********************************************************************** */
-
-static int sci_init_drivers(void)
-{
- int error;
- struct sci_port *port;
- sci_driver = alloc_tty_driver(SCI_NPORTS);
- if (!sci_driver)
- return -ENOMEM;
-
- sci_driver->owner = THIS_MODULE;
- sci_driver->driver_name = "sci";
- sci_driver->name = "ttySC";
- sci_driver->devfs_name = "ttsc/";
- sci_driver->major = SCI_MAJOR;
- sci_driver->minor_start = SCI_MINOR_START;
- sci_driver->type = TTY_DRIVER_TYPE_SERIAL;
- sci_driver->subtype = SERIAL_TYPE_NORMAL;
- sci_driver->init_termios = tty_std_termios;
- sci_driver->init_termios.c_cflag =
- B9600 | CS8 | CREAD | HUPCL | CLOCAL | CRTSCTS;
- sci_driver->flags = TTY_DRIVER_REAL_RAW;
- tty_set_operations(sci_driver, &sci_ops);
- if ((error = tty_register_driver(sci_driver))) {
- printk(KERN_ERR "sci: Couldn't register SCI driver, error = %d\n",
- error);
- put_tty_driver(sci_driver);
- return 1;
- }
-
- for (port = &sci_ports[0]; port < &sci_ports[SCI_NPORTS]; port++) {
- port->gs.magic = SCI_MAGIC;
- port->gs.close_delay = HZ/2;
- port->gs.closing_wait = 30 * HZ;
- port->gs.rd = &sci_real_driver;
- init_waitqueue_head(&port->gs.open_wait);
- init_waitqueue_head(&port->gs.close_wait);
- port->old_cflag = 0;
- port->icount.cts = port->icount.dsr =
- port->icount.rng = port->icount.dcd = 0;
- port->icount.rx = port->icount.tx = 0;
- port->icount.frame = port->icount.parity = 0;
- port->icount.overrun = port->icount.brk = 0;
- }
-
-#ifdef CONFIG_CPU_FREQ
- /* Setup transition notifier */
- if (cpufreq_register_notifier(&sci_nb, CPUFREQ_TRANSITION_NOTIFIER) < 0) {
- printk(KERN_ERR "sci: Unable to register CPU frequency notifier\n");
- return 1;
- }
- printk("sci: CPU frequency notifier registered\n");
-#endif
- return 0;
-}
-
-static int sci_request_irq(struct sci_port *port)
-{
- int i;
-#if !defined(SCI_ONLY)
- irqreturn_t (*handlers[4])(int irq, void *p, struct pt_regs *regs) = {
- sci_er_interrupt, sci_rx_interrupt, sci_tx_interrupt,
- sci_br_interrupt,
- };
-#else
- void (*handlers[3])(int irq, void *ptr, struct pt_regs *regs) = {
- sci_er_interrupt, sci_rx_interrupt, sci_tx_interrupt,
- };
-#endif
- for (i=0; i<(sizeof(handlers)/sizeof(handlers[0])); i++) {
- if (!port->irqs[i]) continue;
- if (request_irq(port->irqs[i], handlers[i], SA_INTERRUPT,
- "sci", port)) {
- printk(KERN_ERR "sci: Cannot allocate irq.\n");
- return -ENODEV;
- }
- }
- return 0;
-}
-
-static void sci_free_irq(struct sci_port *port)
-{
- int i;
-
- for (i=0; i<4; i++) {
- if (!port->irqs[i]) continue;
- free_irq(port->irqs[i], port);
- }
-}
-
-static char banner[] __initdata =
- KERN_INFO "SuperH SCI(F) driver initialized\n";
-
-int __init sci_init(void)
-{
- struct sci_port *port;
- int j;
-
- printk("%s", banner);
-
- for (j=0; j<SCI_NPORTS; j++) {
- port = &sci_ports[j];
- printk(KERN_INFO "ttySC%d at 0x%08x is a %s\n", j, port->base,
- (port->type == PORT_SCI) ? "SCI" : "SCIF");
- }
-
- sci_init_drivers();
-
-#ifdef CONFIG_SH_STANDARD_BIOS
- sh_bios_gdb_detach();
-#endif
- return 0; /* Return -EIO when not detected */
-}
-
-module_init(sci_init);
-
-#ifdef MODULE
-#undef func_enter
-#undef func_exit
-
-void cleanup_module(void)
-{
- tty_unregister_driver(sci_driver);
- put_tty_driver(sci_driver);
-}
-
-#include "generic_serial.c"
-#endif
-
-#ifdef CONFIG_SERIAL_CONSOLE
-/*
- * Print a string to the serial port trying not to disturb
- * any possible real use of the port...
- */
-static void serial_console_write(struct console *co, const char *s,
- unsigned count)
-{
- put_string(sercons_port, s, count);
-}
-
-static struct tty_driver *serial_console_device(struct console *c, int *index)
-{
- *index = c->index;
- return sci_driver;
-}
-
-/*
- * Setup initial baud/bits/parity. We do two things here:
- * - construct a cflag setting for the first rs_open()
- * - initialize the serial port
- * Return non-zero if we didn't find a serial port.
- */
-static int __init serial_console_setup(struct console *co, char *options)
-{
- int baud = 9600;
- int bits = 8;
- int parity = 'n';
- int cflag = CREAD | HUPCL | CLOCAL;
- char *s;
-
- sercons_port = &sci_ports[co->index];
-
- if (options) {
- baud = simple_strtoul(options, NULL, 10);
- s = options;
- while(*s >= '0' && *s <= '9')
- s++;
- if (*s) parity = *s++;
- if (*s) bits = *s - '0';
- }
-
- /*
- * Now construct a cflag setting.
- */
- switch (baud) {
- case 19200:
- cflag |= B19200;
- break;
- case 38400:
- cflag |= B38400;
- break;
- case 57600:
- cflag |= B57600;
- break;
- case 115200:
- cflag |= B115200;
- break;
- case 9600:
- default:
- cflag |= B9600;
- baud = 9600;
- break;
- }
- switch (bits) {
- case 7:
- cflag |= CS7;
- break;
- default:
- case 8:
- cflag |= CS8;
- break;
- }
- switch (parity) {
- case 'o': case 'O':
- cflag |= PARODD;
- break;
- case 'e': case 'E':
- cflag |= PARENB;
- break;
- }
-
- co->cflag = cflag;
- sercons_baud = baud;
-
-#if defined(__H8300S__)
- h8300_sci_enable(sercons_port,sci_enable);
-#endif
- sci_set_termios_cflag(sercons_port, cflag, baud);
- sercons_port->old_cflag = cflag;
-
- return 0;
-}
-
-static struct console sercons = {
- .name = "ttySC",
- .write = serial_console_write,
- .device = serial_console_device,
- .setup = serial_console_setup,
- .flags = CON_PRINTBUFFER,
- .index = -1,
-};
-
-/*
- * Register console.
- */
-
-#ifdef CONFIG_SH_EARLY_PRINTK
-extern void sh_console_unregister (void);
-#endif
-
-static int __init sci_console_init(void)
-{
- register_console(&sercons);
-#ifdef CONFIG_SH_EARLY_PRINTK
- /* Now that the real console is available, unregister the one we
- * used while first booting.
- */
- sh_console_unregister();
-#endif
- return 0;
-}
-console_initcall(sci_console_init);
-
-#endif /* CONFIG_SERIAL_CONSOLE */
-
-
-#ifdef CONFIG_SH_KGDB
-
-/* Initialise the KGDB serial port */
-int kgdb_sci_setup(void)
-{
- int cflag = CREAD | HUPCL | CLOCAL;
-
- if ((kgdb_portnum < 0) || (kgdb_portnum >= SCI_NPORTS))
- return -1;
-
- kgdb_sci_port = &sci_ports[kgdb_portnum];
-
- switch (kgdb_baud) {
- case 115200:
- cflag |= B115200;
- break;
- case 57600:
- cflag |= B57600;
- break;
- case 38400:
- cflag |= B38400;
- break;
- case 19200:
- cflag |= B19200;
- break;
- case 9600:
- default:
- cflag |= B9600;
- kgdb_baud = 9600;
- break;
- }
-
- switch (kgdb_bits) {
- case '7':
- cflag |= CS7;
- break;
- default:
- case '8':
- cflag |= CS8;
- break;
- }
-
- switch (kgdb_parity) {
- case 'O':
- cflag |= PARODD;
- break;
- case 'E':
- cflag |= PARENB;
- break;
- }
-
- kgdb_cflag = cflag;
- sci_set_termios_cflag(kgdb_sci_port, kgdb_cflag, kgdb_baud);
-
- /* Set up the interrupt for BREAK from GDB */
- /* Commented out for now since it may not be possible yet...
- request_irq(kgdb_sci_port->irqs[0], kgdb_break_interrupt,
- SA_INTERRUPT, "sci", kgdb_sci_port);
- sci_enable_rx_interrupts(kgdb_sci_port);
- */
-
- /* Setup complete: initialize function pointers */
- kgdb_getchar = kgdb_sci_getchar;
- kgdb_putchar = kgdb_sci_putchar;
-
- return 0;
-}
-
-#ifdef CONFIG_SH_KGDB_CONSOLE
-
-/* Create a console device */
-static kdev_t kgdb_console_device(struct console *c)
-{
- return MKDEV(SCI_MAJOR, SCI_MINOR_START + c->index);
-}
-
-/* Set up the KGDB console */
-static int __init kgdb_console_setup(struct console *co, char *options)
-{
- /* NB we ignore 'options' because we've already done the setup */
- co->cflag = kgdb_cflag;
-
- return 0;
-}
-
-/* Register the KGDB console so we get messages (d'oh!) */
-void __init kgdb_console_init(void)
-{
- register_console(&kgdbcons);
-}
-
-/* The console structure for KGDB */
-static struct console kgdbcons = {
- name:"ttySC",
- write:kgdb_console_write,
- device:kgdb_console_device,
- wait_key:serial_console_wait_key,
- setup:kgdb_console_setup,
- flags:CON_PRINTBUFFER | CON_ENABLED,
- index:-1,
-};
-
-#endif /* CONFIG_SH_KGDB_CONSOLE */
-
-#endif /* CONFIG_SH_KGDB */
+++ /dev/null
-/* $Id: sh-sci.h,v 1.7 2004/02/10 17:04:17 lethal Exp $
- *
- * linux/drivers/char/sh-sci.h
- *
- * SuperH on-chip serial module support. (SCI with no FIFO / with FIFO)
- * Copyright (C) 1999, 2000 Niibe Yutaka
- * Copyright (C) 2000 Greg Banks
- * Modified to support multiple serial ports. Stuart Menefy (May 2000).
- * Modified to support SH7760 SCIF. Paul Mundt (Oct 2003).
- * Modified to support H8/300 Serise Yoshinori Sato (Feb 2004).
- *
- */
-#include <linux/config.h>
-
-#if defined(__H8300H__) || defined(__H8300S__)
-#include <asm/gpio.h>
-#if defined(CONFIG_H83007) || defined(CONFIG_H83068)
-#include <asm/regs306x.h>
-#endif
-#if defined(CONFIG_H8S2678)
-#include <asm/regs267x.h>
-#endif
-#endif
-
-/* Values for sci_port->type */
-#define PORT_SCI 0
-#define PORT_SCIF 1
-#define PORT_IRDA 1 /* XXX: temporary assignment */
-
-/* Offsets into the sci_port->irqs array */
-#define SCIx_ERI_IRQ 0
-#define SCIx_RXI_IRQ 1
-#define SCIx_TXI_IRQ 2
-
-/* ERI, RXI, TXI, BRI */
-#define SCI_IRQS { 23, 24, 25, 0 }
-#define SH3_SCIF_IRQS { 56, 57, 59, 58 }
-#define SH3_IRDA_IRQS { 52, 53, 55, 54 }
-#define SH4_SCIF_IRQS { 40, 41, 43, 42 }
-#define STB1_SCIF1_IRQS {23, 24, 26, 25 }
-#define SH7760_SCIF0_IRQS { 52, 53, 55, 54 }
-#define SH7760_SCIF1_IRQS { 72, 73, 75, 74 }
-#define SH7760_SCIF2_IRQS { 76, 77, 79, 78 }
-#define H8300H_SCI_IRQS0 {52, 53, 54, 0 }
-#define H8300H_SCI_IRQS1 {56, 57, 58, 0 }
-#define H8300H_SCI_IRQS2 {60, 61, 62, 0 }
-#define H8S_SCI_IRQS0 {88, 89, 90, 0 }
-#define H8S_SCI_IRQS1 {92, 93, 94, 0 }
-#define H8S_SCI_IRQS2 {96, 97, 98, 0 }
-
-#if defined(CONFIG_CPU_SUBTYPE_SH7708)
-# define SCI_NPORTS 1
-# define SCI_INIT { \
- { {}, PORT_SCI, 0xfffffe80, SCI_IRQS, sci_init_pins_sci } \
-}
-# define SCSPTR 0xffffff7c /* 8 bit */
-# define SCSCR_INIT(port) 0x30 /* TIE=0,RIE=0,TE=1,RE=1 */
-# define SCI_ONLY
-#elif defined(CONFIG_CPU_SUBTYPE_SH7707) || defined(CONFIG_CPU_SUBTYPE_SH7709)
-# define SCI_NPORTS 3
-# define SCI_INIT { \
- { {}, PORT_SCI, 0xfffffe80, SCI_IRQS, sci_init_pins_sci }, \
- { {}, PORT_SCIF, 0xA4000150, SH3_SCIF_IRQS, sci_init_pins_scif }, \
- { {}, PORT_SCIF, 0xA4000140, SH3_IRDA_IRQS, sci_init_pins_irda } \
-}
-# define SCPCR 0xA4000116 /* 16 bit SCI and SCIF */
-# define SCPDR 0xA4000136 /* 8 bit SCI and SCIF */
-# define SCSCR_INIT(port) 0x30 /* TIE=0,RIE=0,TE=1,RE=1 */
-# define SCI_AND_SCIF
-#elif defined(CONFIG_CPU_SUBTYPE_SH7750) || defined(CONFIG_CPU_SUBTYPE_SH7751)
-# define SCI_NPORTS 2
-# define SCI_INIT { \
- { {}, PORT_SCI, 0xffe00000, SCI_IRQS, sci_init_pins_sci }, \
- { {}, PORT_SCIF, 0xFFE80000, SH4_SCIF_IRQS, sci_init_pins_scif } \
-}
-# define SCSPTR1 0xffe0001c /* 8 bit SCI */
-# define SCSPTR2 0xFFE80020 /* 16 bit SCIF */
-# define SCIF_ORER 0x0001 /* overrun error bit */
-# define SCSCR_INIT(port) (((port)->type == PORT_SCI) ? \
- 0x30 /* TIE=0,RIE=0,TE=1,RE=1 */ : \
- 0x38 /* TIE=0,RIE=0,TE=1,RE=1,REIE=1 */ )
-# define SCI_AND_SCIF
-#elif defined(CONFIG_CPU_SUBTYPE_SH7760)
-# define SCI_NPORTS 3
-# define SCI_INIT { \
- { {}, PORT_SCIF, 0xfe600000, SH7760_SCIF0_IRQS, sci_init_pins_scif }, \
- { {}, PORT_SCIF, 0xfe610000, SH7760_SCIF1_IRQS, sci_init_pins_scif }, \
- { {}, PORT_SCIF, 0xfe620000, SH7760_SCIF2_IRQS, sci_init_pins_scif } \
-}
-# define SCSPTR0 0xfe600024 /* 16 bit SCIF */
-# define SCSPTR1 0xfe610024 /* 16 bit SCIF */
-# define SCSPTR2 0xfe620024 /* 16 bit SCIF */
-# define SCIF_ORDER 0x0001 /* overrun error bit */
-# define SCSCR_INIT(port) 0x38 /* TIE=0,RIE=0,TE=1,RE=1,REIE=1 */
-# define SCIF_ONLY
-#elif defined(CONFIG_CPU_SUBTYPE_ST40STB1)
-# define SCI_NPORTS 2
-# define SCI_INIT { \
- { {}, PORT_SCIF, 0xffe00000, STB1_SCIF1_IRQS, sci_init_pins_scif }, \
- { {}, PORT_SCIF, 0xffe80000, SH4_SCIF_IRQS, sci_init_pins_scif } \
-}
-# define SCSPTR1 0xffe00020 /* 16 bit SCIF */
-# define SCSPTR2 0xffe80020 /* 16 bit SCIF */
-# define SCIF_ORER 0x0001 /* overrun error bit */
-# define SCSCR_INIT(port) 0x38 /* TIE=0,RIE=0,TE=1,RE=1,REIE=1 */
-# define SCIF_ONLY
-#elif defined(CONFIG_H83007) || defined(CONFIG_H83068)
-# define SCI_NPORTS 3
-# define SCI_INIT { \
- { {}, PORT_SCI, 0x00ffffb0, H8300H_SCI_IRQS0, sci_init_pins_sci }, \
- { {}, PORT_SCI, 0x00ffffb8, H8300H_SCI_IRQS1, sci_init_pins_sci }, \
- { {}, PORT_SCI, 0x00ffffc0, H8300H_SCI_IRQS2, sci_init_pins_sci } \
-}
-# define SCSCR_INIT(port) 0x30 /* TIE=0,RIE=0,TE=1,RE=1 */
-# define SCI_ONLY
-# define H8300_SCI_DR(ch) *(volatile char *)(P1DR + h8300_sci_pins[ch].port)
-#elif defined(CONFIG_H8S2678)
-# define SCI_NPORTS 3
-# define SCI_INIT { \
- { {}, PORT_SCI, 0x00ffff78, H8S_SCI_IRQS0, sci_init_pins_sci }, \
- { {}, PORT_SCI, 0x00ffff80, H8S_SCI_IRQS1, sci_init_pins_sci }, \
- { {}, PORT_SCI, 0x00ffff88, H8S_SCI_IRQS2, sci_init_pins_sci } \
-}
-# define SCSCR_INIT(port) 0x30 /* TIE=0,RIE=0,TE=1,RE=1 */
-# define SCI_ONLY
-# define H8300_SCI_DR(ch) *(volatile char *)(P1DR + h8300_sci_pins[ch].port)
-#else
-# error CPU subtype not defined
-#endif
-
-/* SCSCR */
-#define SCI_CTRL_FLAGS_TIE 0x80 /* all */
-#define SCI_CTRL_FLAGS_RIE 0x40 /* all */
-#define SCI_CTRL_FLAGS_TE 0x20 /* all */
-#define SCI_CTRL_FLAGS_RE 0x10 /* all */
-/* SCI_CTRL_FLAGS_REIE 0x08 * 7750 SCIF */
-/* SCI_CTRL_FLAGS_MPIE 0x08 * 7707 SCI, 7708 SCI, 7709 SCI, 7750 SCI */
-/* SCI_CTRL_FLAGS_TEIE 0x04 * 7707 SCI, 7708 SCI, 7709 SCI, 7750 SCI */
-/* SCI_CTRL_FLAGS_CKE1 0x02 * all */
-/* SCI_CTRL_FLAGS_CKE0 0x01 * 7707 SCI/SCIF, 7708 SCI, 7709 SCI/SCIF, 7750 SCI */
-
-/* SCxSR SCI */
-#define SCI_TDRE 0x80 /* 7707 SCI, 7708 SCI, 7709 SCI, 7750 SCI */
-#define SCI_RDRF 0x40 /* 7707 SCI, 7708 SCI, 7709 SCI, 7750 SCI */
-#define SCI_ORER 0x20 /* 7707 SCI, 7708 SCI, 7709 SCI, 7750 SCI */
-#define SCI_FER 0x10 /* 7707 SCI, 7708 SCI, 7709 SCI, 7750 SCI */
-#define SCI_PER 0x08 /* 7707 SCI, 7708 SCI, 7709 SCI, 7750 SCI */
-#define SCI_TEND 0x04 /* 7707 SCI, 7708 SCI, 7709 SCI, 7750 SCI */
-/* SCI_MPB 0x02 * 7707 SCI, 7708 SCI, 7709 SCI, 7750 SCI */
-/* SCI_MPBT 0x01 * 7707 SCI, 7708 SCI, 7709 SCI, 7750 SCI */
-
-#define SCI_ERRORS ( SCI_PER | SCI_FER | SCI_ORER)
-
-/* SCxSR SCIF */
-#define SCIF_ER 0x0080 /* 7707 SCIF, 7709 SCIF, 7750 SCIF */
-#define SCIF_TEND 0x0040 /* 7707 SCIF, 7709 SCIF, 7750 SCIF */
-#define SCIF_TDFE 0x0020 /* 7707 SCIF, 7709 SCIF, 7750 SCIF */
-#define SCIF_BRK 0x0010 /* 7707 SCIF, 7709 SCIF, 7750 SCIF */
-#define SCIF_FER 0x0008 /* 7707 SCIF, 7709 SCIF, 7750 SCIF */
-#define SCIF_PER 0x0004 /* 7707 SCIF, 7709 SCIF, 7750 SCIF */
-#define SCIF_RDF 0x0002 /* 7707 SCIF, 7709 SCIF, 7750 SCIF */
-#define SCIF_DR 0x0001 /* 7707 SCIF, 7709 SCIF, 7750 SCIF */
-
-#define SCIF_ERRORS ( SCIF_PER | SCIF_FER | SCIF_ER | SCIF_BRK)
-
-#if defined(SCI_ONLY)
-# define SCxSR_TEND(port) SCI_TEND
-# define SCxSR_ERRORS(port) SCI_ERRORS
-# define SCxSR_RDxF(port) SCI_RDRF
-# define SCxSR_TDxE(port) SCI_TDRE
-# define SCxSR_ORER(port) SCI_ORER
-# define SCxSR_FER(port) SCI_FER
-# define SCxSR_PER(port) SCI_PER
-# define SCxSR_BRK(port) 0x00
-# define SCxSR_RDxF_CLEAR(port) 0xbc
-# define SCxSR_ERROR_CLEAR(port) 0xc4
-# define SCxSR_TDxE_CLEAR(port) 0x78
-# define SCxSR_BREAK_CLEAR(port) 0xc4
-#elif defined(SCIF_ONLY)
-# define SCxSR_TEND(port) SCIF_TEND
-# define SCxSR_ERRORS(port) SCIF_ERRORS
-# define SCxSR_RDxF(port) SCIF_RDF
-# define SCxSR_TDxE(port) SCIF_TDFE
-# define SCxSR_ORER(port) 0x0000
-# define SCxSR_FER(port) SCIF_FER
-# define SCxSR_PER(port) SCIF_PER
-# define SCxSR_BRK(port) SCIF_BRK
-# define SCxSR_RDxF_CLEAR(port) 0x00fc
-# define SCxSR_ERROR_CLEAR(port) 0x0073
-# define SCxSR_TDxE_CLEAR(port) 0x00df
-# define SCxSR_BREAK_CLEAR(port) 0x00e3
-#else
-# define SCxSR_TEND(port) (((port)->type == PORT_SCI) ? SCI_TEND : SCIF_TEND)
-# define SCxSR_ERRORS(port) (((port)->type == PORT_SCI) ? SCI_ERRORS : SCIF_ERRORS)
-# define SCxSR_RDxF(port) (((port)->type == PORT_SCI) ? SCI_RDRF : SCIF_RDF)
-# define SCxSR_TDxE(port) (((port)->type == PORT_SCI) ? SCI_TDRE : SCIF_TDFE)
-# define SCxSR_ORER(port) (((port)->type == PORT_SCI) ? SCI_ORER : 0x0000)
-# define SCxSR_FER(port) (((port)->type == PORT_SCI) ? SCI_FER : SCIF_FER)
-# define SCxSR_PER(port) (((port)->type == PORT_SCI) ? SCI_PER : SCIF_PER)
-# define SCxSR_BRK(port) (((port)->type == PORT_SCI) ? 0x00 : SCIF_BRK)
-# define SCxSR_RDxF_CLEAR(port) (((port)->type == PORT_SCI) ? 0xbc : 0x00fc)
-# define SCxSR_ERROR_CLEAR(port) (((port)->type == PORT_SCI) ? 0xc4 : 0x0073)
-# define SCxSR_TDxE_CLEAR(port) (((port)->type == PORT_SCI) ? 0x78 : 0x00df)
-# define SCxSR_BREAK_CLEAR(port) (((port)->type == PORT_SCI) ? 0xc4 : 0x00e3)
-#endif
-
-/* SCFCR */
-#define SCFCR_RFRST 0x0002
-#define SCFCR_TFRST 0x0004
-#define SCFCR_MCE 0x0008
-
-#define SCI_MAJOR 204
-#define SCI_MINOR_START 8
-
-/* Generic serial flags */
-#define SCI_RX_THROTTLE 0x0000001
-
-#define SCI_MAGIC 0xbabeface
-
-/*
- * Events are used to schedule things to happen at timer-interrupt
- * time, instead of at rs interrupt time.
- */
-#define SCI_EVENT_WRITE_WAKEUP 0
-
-struct sci_port {
- struct gs_port gs;
- int type;
- unsigned int base;
- unsigned char irqs[4]; /* ERI, RXI, TXI, BRI */
- void (*init_pins)(struct sci_port* port, unsigned int cflag);
- unsigned int old_cflag;
- struct async_icount icount;
- struct work_struct tqueue;
- unsigned long event;
- int break_flag;
-};
-
-#define SCI_IN(size, offset) \
- unsigned int addr = port->base + (offset); \
- if ((size) == 8) { \
- return ctrl_inb(addr); \
- } else { \
- return ctrl_inw(addr); \
- }
-#define SCI_OUT(size, offset, value) \
- unsigned int addr = port->base + (offset); \
- if ((size) == 8) { \
- ctrl_outb(value, addr); \
- } else { \
- ctrl_outw(value, addr); \
- }
-
-#define CPU_SCIx_FNS(name, sci_offset, sci_size, scif_offset, scif_size)\
- static inline unsigned int sci_##name##_in(struct sci_port* port) \
- { \
- if (port->type == PORT_SCI) { \
- SCI_IN(sci_size, sci_offset) \
- } else { \
- SCI_IN(scif_size, scif_offset); \
- } \
- } \
- static inline void sci_##name##_out(struct sci_port* port, unsigned int value) \
- { \
- if (port->type == PORT_SCI) { \
- SCI_OUT(sci_size, sci_offset, value) \
- } else { \
- SCI_OUT(scif_size, scif_offset, value); \
- } \
- }
-
-#define CPU_SCIF_FNS(name, scif_offset, scif_size) \
- static inline unsigned int sci_##name##_in(struct sci_port* port) \
- { \
- SCI_IN(scif_size, scif_offset); \
- } \
- static inline void sci_##name##_out(struct sci_port* port, unsigned int value) \
- { \
- SCI_OUT(scif_size, scif_offset, value); \
- }
-
-#define CPU_SCI_FNS(name, sci_offset, sci_size) \
- static inline unsigned int sci_##name##_in(struct sci_port* port) \
- { \
- SCI_IN(sci_size, sci_offset); \
- } \
- static inline void sci_##name##_out(struct sci_port* port, unsigned int value) \
- { \
- SCI_OUT(sci_size, sci_offset, value); \
- }
-
-#ifdef CONFIG_CPU_SH3
-#define SCIx_FNS(name, sh3_sci_offset, sh3_sci_size, sh4_sci_offset, sh4_sci_size, \
- sh3_scif_offset, sh3_scif_size, sh4_scif_offset, sh4_scif_size, \
- h8_sci_offset, h8_sci_size) \
- CPU_SCIx_FNS(name, sh3_sci_offset, sh3_sci_size, sh3_scif_offset, sh3_scif_size)
-#define SCIF_FNS(name, sh3_scif_offset, sh3_scif_size, sh4_scif_offset, sh4_scif_size) \
- CPU_SCIF_FNS(name, sh3_scif_offset, sh3_scif_size)
-#elif defined(__H8300H__) || defined(__H8300S__)
-#define SCIx_FNS(name, sh3_sci_offset, sh3_sci_size, sh4_sci_offset, sh4_sci_size, \
- sh3_scif_offset, sh3_scif_size, sh4_scif_offset, sh4_scif_size, \
- h8_sci_offset, h8_sci_size) \
- CPU_SCI_FNS(name, h8_sci_offset, h8_sci_size)
-#define SCIF_FNS(name, sh3_scif_offset, sh3_scif_size, sh4_scif_offset, sh4_scif_size)
-#else
-#define SCIx_FNS(name, sh3_sci_offset, sh3_sci_size, sh4_sci_offset, sh4_sci_size, \
- sh3_scif_offset, sh3_scif_size, sh4_scif_offset, sh4_scif_size, \
- h8_sci_offset, h8_sci_size) \
- CPU_SCIx_FNS(name, sh4_sci_offset, sh4_sci_size, sh4_scif_offset, sh4_scif_size)
-#define SCIF_FNS(name, sh3_scif_offset, sh3_scif_size, sh4_scif_offset, sh4_scif_size) \
- CPU_SCIF_FNS(name, sh4_scif_offset, sh4_scif_size)
-#endif
-
-/* reg SCI/SH3 SCI/SH4 SCIF/SH3 SCIF/SH4 SCI/H8*/
-/* name off sz off sz off sz off sz off sz*/
-SCIx_FNS(SCSMR, 0x00, 8, 0x00, 8, 0x00, 8, 0x00, 16, 0x00, 8)
-SCIx_FNS(SCBRR, 0x02, 8, 0x04, 8, 0x02, 8, 0x04, 8, 0x01, 8)
-SCIx_FNS(SCSCR, 0x04, 8, 0x08, 8, 0x04, 8, 0x08, 16, 0x02, 8)
-SCIx_FNS(SCxTDR, 0x06, 8, 0x0c, 8, 0x06, 8, 0x0C, 8, 0x03, 8)
-SCIx_FNS(SCxSR, 0x08, 8, 0x10, 8, 0x08, 16, 0x10, 16, 0x04, 8)
-SCIx_FNS(SCxRDR, 0x0a, 8, 0x14, 8, 0x0A, 8, 0x14, 8, 0x05, 8)
-SCIF_FNS(SCFCR, 0x0c, 8, 0x18, 16)
-SCIF_FNS(SCFDR, 0x0e, 16, 0x1C, 16)
-SCIF_FNS(SCLSR, 0, 0, 0x24, 16)
-
-#define sci_in(port, reg) sci_##reg##_in(port)
-#define sci_out(port, reg, value) sci_##reg##_out(port, value)
-
-/* H8/300 series SCI pins assignment */
-#if defined(__H8300H__) || defined(__H8300S__)
-static const struct __attribute__((packed))
-{
- int port; /* GPIO port no */
- unsigned short rx,tx; /* GPIO bit no */
-} h8300_sci_pins[] =
-{
-#if defined(CONFIG_H83007) || defined(CONFIG_H83068)
- { /* SCI0 */
- .port = H8300_GPIO_P9,
- .rx = H8300_GPIO_B2,
- .tx = H8300_GPIO_B0,
- },
- { /* SCI1 */
- .port = H8300_GPIO_P9,
- .rx = H8300_GPIO_B3,
- .tx = H8300_GPIO_B1,
- },
- { /* SCI2 */
- .port = H8300_GPIO_PB,
- .rx = H8300_GPIO_B7,
- .tx = H8300_GPIO_B6,
- }
-#elif defined(CONFIG_H8S2678)
- { /* SCI0 */
- .port = H8300_GPIO_P3,
- .rx = H8300_GPIO_B2,
- .tx = H8300_GPIO_B0,
- },
- { /* SCI1 */
- .port = H8300_GPIO_P3,
- .rx = H8300_GPIO_B3,
- .tx = H8300_GPIO_B1,
- },
- { /* SCI2 */
- .port = H8300_GPIO_P5,
- .rx = H8300_GPIO_B1,
- .tx = H8300_GPIO_B0,
- }
-#endif
-};
-#endif
-
-#if defined(CONFIG_CPU_SUBTYPE_SH7708)
-static inline int sci_rxd_in(struct sci_port *port)
-{
- if (port->base == 0xfffffe80)
- return ctrl_inb(SCSPTR)&0x01 ? 1 : 0; /* SCI */
- return 1;
-}
-#elif defined(CONFIG_CPU_SUBTYPE_SH7707) || defined(CONFIG_CPU_SUBTYPE_SH7709)
-static inline int sci_rxd_in(struct sci_port *port)
-{
- if (port->base == 0xfffffe80)
- return ctrl_inb(SCPDR)&0x01 ? 1 : 0; /* SCI */
- if (port->base == 0xa4000150)
- return ctrl_inb(SCPDR)&0x10 ? 1 : 0; /* SCIF */
- if (port->base == 0xa4000140)
- return ctrl_inb(SCPDR)&0x04 ? 1 : 0; /* IRDA */
- return 1;
-}
-#elif defined(CONFIG_CPU_SUBTYPE_SH7750) || defined(CONFIG_CPU_SUBTYPE_SH7751)
-static inline int sci_rxd_in(struct sci_port *port)
-{
-#ifndef SCIF_ONLY
- if (port->base == 0xffe00000)
- return ctrl_inb(SCSPTR1)&0x01 ? 1 : 0; /* SCI */
-#endif
-#ifndef SCI_ONLY
- if (port->base == 0xffe80000)
- return ctrl_inw(SCSPTR2)&0x0001 ? 1 : 0; /* SCIF */
-#endif
- return 1;
-}
-#elif defined(CONFIG_CPU_SUBTYPE_SH7760)
-static inline int sci_rxd_in(struct sci_port *port)
-{
- if (port->base == 0xfe600000)
- return ctrl_inw(SCSPTR0) & 0x0001 ? 1 : 0; /* SCIF */
- if (port->base == 0xfe610000)
- return ctrl_inw(SCSPTR1) & 0x0001 ? 1 : 0; /* SCIF */
- if (port->base == 0xfe620000)
- return ctrl_inw(SCSPTR2) & 0x0001 ? 1 : 0; /* SCIF */
-}
-#elif defined(CONFIG_CPU_SUBTYPE_ST40STB1)
-static inline int sci_rxd_in(struct sci_port *port)
-{
- if (port->base == 0xffe00000)
- return ctrl_inw(SCSPTR1)&0x0001 ? 1 : 0; /* SCIF */
- else
- return ctrl_inw(SCSPTR2)&0x0001 ? 1 : 0; /* SCIF */
-
-}
-#elif defined(__H8300H__) || defined(__H8300S__)
-static inline int sci_rxd_in(struct sci_port *port)
-{
- int ch = (port->base - SMR0) >> 3;
- return (H8300_SCI_DR(ch) & h8300_sci_pins[ch].rx) ? 1 : 0;
-}
-#endif
-
-/*
- * Values for the BitRate Register (SCBRR)
- *
- * The values are actually divisors for a frequency which can
- * be internal to the SH3 (14.7456MHz) or derived from an external
- * clock source. This driver assumes the internal clock is used;
- * to support using an external clock source, config options or
- * possibly command-line options would need to be added.
- *
- * Also, to support speeds below 2400 (why?) the lower 2 bits of
- * the SCSMR register would also need to be set to non-zero values.
- *
- * -- Greg Banks 27Feb2000
- *
- * Answer: The SCBRR register is only eight bits, and the value in
- * it gets larger with lower baud rates. At around 2400 (depending on
- * the peripherial module clock) you run out of bits. However the
- * lower two bits of SCSMR allow the module clock to be divided down,
- * scaling the value which is needed in SCBRR.
- *
- * -- Stuart Menefy - 23 May 2000
- *
- * I meant, why would anyone bother with bitrates below 2400.
- *
- * -- Greg Banks - 7Jul2000
- *
- * You "speedist"! How will I use my 110bps ASR-33 teletype with paper
- * tape reader as a console!
- *
- * -- Mitch Davis - 15 Jul 2000
- */
-
-#define PCLK (current_cpu_data.module_clock)
-
-#if !defined(__H8300H__) && !defined(__H8300S__)
-#define SCBRR_VALUE(bps) ((PCLK+16*bps)/(32*bps)-1)
-#else
-#define SCBRR_VALUE(bps) (((CONFIG_CPU_CLOCK*1000/32)/bps)-1)
-#endif
-#define BPS_2400 SCBRR_VALUE(2400)
-#define BPS_4800 SCBRR_VALUE(4800)
-#define BPS_9600 SCBRR_VALUE(9600)
-#define BPS_19200 SCBRR_VALUE(19200)
-#define BPS_38400 SCBRR_VALUE(38400)
-#define BPS_57600 SCBRR_VALUE(57600)
-#define BPS_115200 SCBRR_VALUE(115200)
-#define BPS_230400 SCBRR_VALUE(230400)
-
+++ /dev/null
-/*
- * drivers/i2c/i2c-adap-ixp42x.c
- *
- * Intel's IXP42x XScale NPU chipsets (IXP420, 421, 422, 425) do not have
- * an on board I2C controller but provide 16 GPIO pins that are often
- * used to create an I2C bus. This driver provides an i2c_adapter
- * interface that plugs in under algo_bit and drives the GPIO pins
- * as instructed by the alogorithm driver.
- *
- * Author: Deepak Saxena <dsaxena@plexity.net>
- *
- * Copyright (c) 2003-2004 MontaVista Software Inc.
- *
- * This file is licensed under the terms of the GNU General Public
- * License version 2. This program is licensed "as is" without any
- * warranty of any kind, whether express or implied.
- *
- * NOTE: Since different platforms will use different GPIO pins for
- * I2C, this driver uses an IXP42x-specific platform_data
- * pointer to pass the GPIO numbers to the driver. This
- * allows us to support all the different IXP42x platforms
- * w/o having to put #ifdefs in this driver.
- *
- * See arch/arm/mach-ixp42x/ixdp425.c for an example of building a
- * device list and filling in the ixp42x_i2c_pins data structure
- * that is passed as the platform_data to this driver.
- */
-
-#include <linux/config.h>
-#include <linux/kernel.h>
-#include <linux/init.h>
-#include <linux/device.h>
-#include <linux/module.h>
-#include <linux/i2c.h>
-
-#include <asm/hardware.h> /* Pick up IXP42x-specific bits */
-
-static inline int ixp42x_scl_pin(void *data)
-{
- return ((struct ixp42x_i2c_pins*)data)->scl_pin;
-}
-
-static inline int ixp42x_sda_pin(void *data)
-{
- return ((struct ixp42x_i2c_pins*)data)->sda_pin;
-}
-
-static void ixp42x_bit_setscl(void *data, int val)
-{
- gpio_line_set(ixp42x_scl_pin(data), 0);
- gpio_line_config(ixp42x_scl_pin(data),
- val ? IXP425_GPIO_IN : IXP425_GPIO_OUT );
-}
-
-static void ixp42x_bit_setsda(void *data, int val)
-{
- gpio_line_set(ixp42x_sda_pin(data), 0);
- gpio_line_config(ixp42x_sda_pin(data),
- val ? IXP425_GPIO_IN : IXP425_GPIO_OUT );
-}
-
-static int ixp42x_bit_getscl(void *data)
-{
- int scl;
-
- gpio_line_config(ixp42x_scl_pin(data), IXP425_GPIO_IN );
- gpio_line_get(ixp42x_scl_pin(data), &scl);
-
- return scl;
-}
-
-static int ixp42x_bit_getsda(void *data)
-{
- int sda;
-
- gpio_line_config(ixp42x_sda_pin(data), IXP425_GPIO_IN );
- gpio_line_get(ixp42x_sda_pin(data), &sda);
-
- return sda;
-}
-
-struct ixp42x_i2c_data {
- struct ixp42x_i2c_pins *gpio_pins;
- struct i2c_adapter adapter;
- struct i2c_algo_bit_data algo_data;
-};
-
-static int ixp42x_i2c_remove(struct device *dev)
-{
- struct platform_device *plat_dev = to_platform_device(dev);
- struct ixp42x_i2c_data *drv_data = dev_get_drvdata(&plat_dev->dev);
-
- dev_set_drvdata(&plat_dev->dev, NULL);
-
- i2c_bit_del_bus(&drv_data->adapter);
-
- kfree(drv_data);
-
- return 0;
-}
-
-static int ixp42x_i2c_probe(struct device *dev)
-{
- int err;
- struct platform_device *plat_dev = to_platform_device(dev);
- struct ixp42x_i2c_pins *gpio = plat_dev->dev.platform_data;
- struct ixp42x_i2c_data *drv_data =
- kmalloc(sizeof(struct ixp42x_i2c_data), GFP_KERNEL);
-
- if(!drv_data)
- return -ENOMEM;
-
- memzero(drv_data, sizeof(struct ixp42x_i2c_data));
- drv_data->gpio_pins = gpio;
-
- /*
- * We could make a lot of these structures static, but
- * certain platforms may have multiple GPIO-based I2C
- * buses for various device domains, so we need per-device
- * algo_data->data.
- */
- drv_data->algo_data.data = gpio;
- drv_data->algo_data.setsda = ixp42x_bit_setsda;
- drv_data->algo_data.setscl = ixp42x_bit_setscl;
- drv_data->algo_data.getsda = ixp42x_bit_getsda;
- drv_data->algo_data.getscl = ixp42x_bit_getscl;
- drv_data->algo_data.udelay = 10;
- drv_data->algo_data.mdelay = 10;
- drv_data->algo_data.timeout = 100;
-
- drv_data->adapter.id = I2C_HW_B_IXP425,
- drv_data->adapter.algo_data = &drv_data->algo_data,
-
- drv_data->adapter.dev.parent = &plat_dev->dev;
-
- gpio_line_config(gpio->scl_pin, IXP425_GPIO_IN);
- gpio_line_config(gpio->sda_pin, IXP425_GPIO_IN);
- gpio_line_set(gpio->scl_pin, 0);
- gpio_line_set(gpio->sda_pin, 0);
-
- if ((err = i2c_bit_add_bus(&drv_data->adapter) != 0)) {
- printk(KERN_ERR "ERROR: Could not install %s\n", dev->bus_id);
-
- kfree(drv_data);
- return err;
- }
-
- dev_set_drvdata(&plat_dev->dev, drv_data);
-
- return 0;
-}
-
-static struct device_driver ixp42x_i2c_driver = {
- .name = "IXP42X-I2C",
- .bus = &platform_bus_type,
- .probe = ixp42x_i2c_probe,
- .remove = ixp42x_i2c_remove,
-};
-
-static int __init ixp42x_i2c_init(void)
-{
- return driver_register(&ixp42x_i2c_driver);
-}
-
-static void __exit ixp42x_i2c_exit(void)
-{
- driver_unregister(&ixp42x_i2c_driver);
-}
-
-module_init(ixp42x_i2c_init);
-module_exit(ixp42x_i2c_exit);
-
-MODULE_DESCRIPTION("GPIO-based I2C driver for IXP42x systems");
-MODULE_LICENSE("GPL");
-MODULE_AUTHOR("Deepak Saxena <dsaxena@plexity.net>");
-
+++ /dev/null
-/*
- * Copyright (C) 2001, 2002 Jens Axboe <axboe@suse.de>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-
-/*
- * Support for the DMA queued protocol, which enables ATA disk drives to
- * use tagged command queueing.
- */
-#include <linux/config.h>
-#include <linux/types.h>
-#include <linux/kernel.h>
-#include <linux/init.h>
-#include <linux/ide.h>
-
-#include <asm/io.h>
-#include <asm/delay.h>
-
-/*
- * warning: it will be _very_ verbose if defined
- */
-#undef IDE_TCQ_DEBUG
-
-#ifdef IDE_TCQ_DEBUG
-#define TCQ_PRINTK printk
-#else
-#define TCQ_PRINTK(x...)
-#endif
-
-/*
- * use nIEN or not
- */
-#undef IDE_TCQ_NIEN
-
-/*
- * we are leaving the SERVICE interrupt alone, IBM drives have it
- * on per default and it can't be turned off. Doesn't matter, this
- * is the sane config.
- */
-#undef IDE_TCQ_FIDDLE_SI
-
-/*
- * bad drive blacklist, for drives that raport tcq capability but don't
- * work reliably with the default config. initially from freebsd table.
- */
-struct ide_tcq_blacklist {
- char *model;
- char works;
- unsigned int max_sectors;
-};
-
-static struct ide_tcq_blacklist ide_tcq_blacklist[] = {
- {
- .model = "IBM-DTTA",
- .works = 1,
- .max_sectors = 128,
- },
- {
- .model = "IBM-DJNA",
- .works = 0,
- },
- {
- .model = "WDC AC",
- .works = 0,
- },
- {
- .model = NULL,
- },
-};
-
-ide_startstop_t ide_dmaq_intr(ide_drive_t *drive);
-ide_startstop_t ide_service(ide_drive_t *drive);
-
-static struct ide_tcq_blacklist *ide_find_drive_blacklist(ide_drive_t *drive)
-{
- struct ide_tcq_blacklist *itb;
- int i = 0;
-
- do {
- itb = &ide_tcq_blacklist[i];
-
- if (!itb->model)
- break;
-
- if (!strncmp(drive->id->model, itb->model, strlen(itb->model)))
- return itb;
-
- i++;
- } while (1);
-
- return NULL;
-}
-
-static inline void drive_ctl_nien(ide_drive_t *drive, int set)
-{
-#ifdef IDE_TCQ_NIEN
- if (IDE_CONTROL_REG) {
- int mask = set ? 0x02 : 0x00;
-
- hwif->OUTB(drive->ctl | mask, IDE_CONTROL_REG);
- }
-#endif
-}
-
-static ide_startstop_t ide_tcq_nop_handler(ide_drive_t *drive)
-{
- ide_task_t *args = HWGROUP(drive)->rq->special;
- ide_hwif_t *hwif = HWIF(drive);
- int auto_poll_check = 0;
- u8 stat, err;
-
- if (args->tfRegister[IDE_FEATURE_OFFSET] & 0x01)
- auto_poll_check = 1;
-
- local_irq_enable();
-
- stat = hwif->INB(IDE_STATUS_REG);
- err = hwif->INB(IDE_ERROR_REG);
- ide_end_drive_cmd(drive, stat, err);
-
- /*
- * do taskfile and check ABRT bit -- intelligent adapters will not
- * pass NOP with sub-code 0x01 to device, so the command will not
- * fail there
- */
- if (auto_poll_check) {
- if (!(args->tfRegister[IDE_FEATURE_OFFSET] & ABRT_ERR)) {
- HWIF(drive)->auto_poll = 1;
- printk("%s: NOP Auto-poll enabled\n",HWIF(drive)->name);
- }
- }
-
- kfree(args);
- return ide_stopped;
-}
-
-/*
- * if we encounter _any_ error doing I/O to one of the tags, we must
- * invalidate the pending queue. clear the software busy queue and requeue
- * on the request queue for restart. issue a WIN_NOP to clear hardware queue
- */
-static void ide_tcq_invalidate_queue(ide_drive_t *drive)
-{
- ide_hwgroup_t *hwgroup = HWGROUP(drive);
- request_queue_t *q = drive->queue;
- struct request *rq;
- unsigned long flags;
-
- printk("%s: invalidating tag queue (%d commands)\n", drive->name, ata_pending_commands(drive));
-
- /*
- * first kill timer and block queue
- */
- spin_lock_irqsave(&ide_lock, flags);
-
- del_timer(&hwgroup->timer);
-
- if (HWIF(drive)->dma)
- HWIF(drive)->ide_dma_end(drive);
-
- blk_queue_invalidate_tags(q);
-
- drive->using_tcq = 0;
- drive->queue_depth = 1;
- hwgroup->busy = 0;
- hwgroup->handler = NULL;
-
- spin_unlock_irqrestore(&ide_lock, flags);
-
- /*
- * now kill hardware queue with a NOP
- */
- rq = &hwgroup->wrq;
- ide_init_drive_cmd(rq);
- rq->buffer = hwgroup->cmd_buf;
- memset(rq->buffer, 0, sizeof(hwgroup->cmd_buf));
- rq->buffer[0] = WIN_NOP;
- ide_do_drive_cmd(drive, rq, ide_preempt);
-}
-
-void ide_tcq_intr_timeout(unsigned long data)
-{
- ide_drive_t *drive = (ide_drive_t *) data;
- ide_hwgroup_t *hwgroup = HWGROUP(drive);
- ide_hwif_t *hwif = HWIF(drive);
- unsigned long flags;
-
- printk(KERN_ERR "ide_tcq_intr_timeout: timeout waiting for %s interrupt\n", hwgroup->rq ? "completion" : "service");
-
- spin_lock_irqsave(&ide_lock, flags);
-
- if (!hwgroup->busy)
- printk(KERN_ERR "ide_tcq_intr_timeout: hwgroup not busy\n");
- if (hwgroup->handler == NULL)
- printk(KERN_ERR "ide_tcq_intr_timeout: missing isr!\n");
-
- hwgroup->busy = 1;
- spin_unlock_irqrestore(&ide_lock, flags);
-
- /*
- * if pending commands, try service before giving up
- */
- if (ata_pending_commands(drive)) {
- u8 stat = hwif->INB(IDE_STATUS_REG);
-
- if ((stat & SRV_STAT) && (ide_service(drive) == ide_started))
- return;
- }
-
- if (drive)
- ide_tcq_invalidate_queue(drive);
-}
-
-void __ide_tcq_set_intr(ide_hwgroup_t *hwgroup, ide_handler_t *handler)
-{
- /*
- * always just bump the timer for now, the timeout handling will
- * have to be changed to be per-command
- */
- hwgroup->timer.function = ide_tcq_intr_timeout;
- hwgroup->timer.data = (unsigned long) hwgroup->drive;
- mod_timer(&hwgroup->timer, jiffies + 5 * HZ);
-
- hwgroup->handler = handler;
-}
-
-void ide_tcq_set_intr(ide_hwgroup_t *hwgroup, ide_handler_t *handler)
-{
- unsigned long flags;
-
- spin_lock_irqsave(&ide_lock, flags);
- __ide_tcq_set_intr(hwgroup, handler);
- spin_unlock_irqrestore(&ide_lock, flags);
-}
-
-/*
- * wait 400ns, then poll for busy_mask to clear from alt status
- */
-#define IDE_TCQ_WAIT (10000)
-int ide_tcq_wait_altstat(ide_drive_t *drive, byte *stat, byte busy_mask)
-{
- ide_hwif_t *hwif = HWIF(drive);
- int i = 0;
-
- udelay(1);
-
- do {
- *stat = hwif->INB(IDE_ALTSTATUS_REG);
-
- if (!(*stat & busy_mask))
- break;
-
- if (unlikely(i++ > IDE_TCQ_WAIT))
- return 1;
-
- udelay(10);
- } while (1);
-
- return 0;
-}
-
-/*
- * issue SERVICE command to drive -- drive must have been selected first,
- * and it must have reported a need for service (status has SRV_STAT set)
- *
- * Also, nIEN must be set as not to need protection against ide_dmaq_intr
- */
-ide_startstop_t ide_service(ide_drive_t *drive)
-{
- ide_hwif_t *hwif = HWIF(drive);
- unsigned long flags;
- struct request *rq;
- byte feat, stat;
- int tag;
-
- TCQ_PRINTK("%s: started service\n", drive->name);
-
- /*
- * could be called with IDE_DMA in-progress from invalidate
- * handler, refuse to do anything
- */
- if (hwif->dma)
- return ide_stopped;
-
- /*
- * need to select the right drive first...
- */
- if (drive != HWGROUP(drive)->drive) {
- SELECT_DRIVE(drive);
- udelay(10);
- }
-
- drive_ctl_nien(drive, 1);
-
- /*
- * send SERVICE, wait 400ns, wait for BUSY_STAT to clear
- */
- hwif->OUTB(WIN_QUEUED_SERVICE, IDE_COMMAND_REG);
-
- if (ide_tcq_wait_altstat(drive, &stat, BUSY_STAT)) {
- printk(KERN_ERR "ide_service: BUSY clear took too long\n");
- ide_dump_status(drive, "ide_service", stat);
- ide_tcq_invalidate_queue(drive);
- return ide_stopped;
- }
-
- drive_ctl_nien(drive, 0);
-
- /*
- * FIXME, invalidate queue
- */
- if (stat & ERR_STAT) {
- ide_dump_status(drive, "ide_service", stat);
- ide_tcq_invalidate_queue(drive);
- return ide_stopped;
- }
-
- /*
- * should not happen, a buggy device could introduce loop
- */
- feat = hwif->INB(IDE_NSECTOR_REG);
- if (feat & REL) {
- HWGROUP(drive)->rq = NULL;
- printk(KERN_ERR "%s: release in service\n", drive->name);
- return ide_stopped;
- }
-
- tag = feat >> 3;
-
- TCQ_PRINTK("ide_service: stat %x, feat %x\n", stat, feat);
-
- spin_lock_irqsave(&ide_lock, flags);
-
- if ((rq = blk_queue_find_tag(drive->queue, tag))) {
- HWGROUP(drive)->rq = rq;
-
- /*
- * we'll start a dma read or write, device will trigger
- * interrupt to indicate end of transfer, release is not
- * allowed
- */
- TCQ_PRINTK("ide_service: starting command, stat=%x\n", stat);
- spin_unlock_irqrestore(&ide_lock, flags);
- return __ide_dma_queued_start(drive);
- }
-
- printk(KERN_ERR "ide_service: missing request for tag %d\n", tag);
- spin_unlock_irqrestore(&ide_lock, flags);
- return ide_stopped;
-}
-
-ide_startstop_t ide_check_service(ide_drive_t *drive)
-{
- ide_hwif_t *hwif = HWIF(drive);
- byte stat;
-
- TCQ_PRINTK("%s: ide_check_service\n", drive->name);
-
- if (!ata_pending_commands(drive))
- return ide_stopped;
-
- stat = hwif->INB(IDE_STATUS_REG);
- if (stat & SRV_STAT)
- return ide_service(drive);
-
- /*
- * we have pending commands, wait for interrupt
- */
- TCQ_PRINTK("%s: wait for service interrupt\n", drive->name);
- ide_tcq_set_intr(HWGROUP(drive), ide_dmaq_intr);
- return ide_started;
-}
-
-ide_startstop_t ide_dmaq_complete(ide_drive_t *drive, struct request *rq, byte stat)
-{
- byte dma_stat;
-
- /*
- * transfer was in progress, stop DMA engine
- */
- dma_stat = HWIF(drive)->ide_dma_end(drive);
-
- /*
- * must be end of I/O, check status and complete as necessary
- */
- if (unlikely(!OK_STAT(stat, READY_STAT, drive->bad_wstat | DRQ_STAT))) {
- printk(KERN_ERR "ide_dmaq_intr: %s: error status %x\n",drive->name,stat);
- ide_dump_status(drive, "ide_dmaq_complete", stat);
- ide_tcq_invalidate_queue(drive);
- return ide_stopped;
- }
-
- if (dma_stat)
- printk(KERN_WARNING "%s: bad DMA status (dma_stat=%x)\n", drive->name, dma_stat);
-
- TCQ_PRINTK("ide_dmaq_complete: ending %p, tag %d\n", rq, rq->tag);
- ide_end_request(drive, 1, rq->nr_sectors);
-
- /*
- * we completed this command, check if we can service a new command
- */
- return ide_check_service(drive);
-}
-
-/*
- * intr handler for queued dma operations. this can be entered for two
- * reasons:
- *
- * 1) device has completed dma transfer
- * 2) service request to start a command
- *
- * if the drive has an active tag, we first complete that request before
- * processing any pending SERVICE.
- */
-ide_startstop_t ide_dmaq_intr(ide_drive_t *drive)
-{
- struct request *rq = HWGROUP(drive)->rq;
- ide_hwif_t *hwif = HWIF(drive);
- byte stat = hwif->INB(IDE_STATUS_REG);
-
- TCQ_PRINTK("ide_dmaq_intr: stat=%x\n", stat);
-
- /*
- * if a command completion interrupt is pending, do that first and
- * check service afterwards
- */
- if (rq) {
- TCQ_PRINTK("ide_dmaq_intr: completion\n");
- return ide_dmaq_complete(drive, rq, stat);
- }
-
- /*
- * service interrupt
- */
- if (stat & SRV_STAT) {
- TCQ_PRINTK("ide_dmaq_intr: SERV (stat=%x)\n", stat);
- return ide_service(drive);
- }
-
- printk("ide_dmaq_intr: stat=%x, not expected\n", stat);
- return ide_check_service(drive);
-}
-
-/*
- * check if the ata adapter this drive is attached to supports the
- * NOP auto-poll for multiple tcq enabled drives on one channel
- */
-static int ide_tcq_check_autopoll(ide_drive_t *drive)
-{
- ide_task_t *args;
- int i, drives;
-
- /*
- * only need to probe if both drives on a channel support tcq
- */
- for (i = 0, drives = 0; i < MAX_DRIVES; i++)
- if (HWIF(drive)->drives[i].present && drive->media == ide_disk)
- drives++;
-
- if (drives <= 1)
- return 0;
-
- /*
- * what a mess...
- */
- args = kmalloc(sizeof(*args), GFP_ATOMIC);
- if (!args)
- return 1;
-
- memset(args, 0, sizeof(*args));
-
- args->tfRegister[IDE_FEATURE_OFFSET] = 0x01;
- args->tfRegister[IDE_COMMAND_OFFSET] = WIN_NOP;
- args->command_type = IDE_DRIVE_TASK_NO_DATA;
- args->handler = ide_tcq_nop_handler;
- return ide_raw_taskfile(drive, args, NULL);
-}
-
-/*
- * configure the drive for tcq
- */
-static int ide_tcq_configure(ide_drive_t *drive)
-{
- int tcq_mask = 1 << 1 | 1 << 14;
- int tcq_bits = tcq_mask | 1 << 15;
- ide_task_t *args;
-
- /*
- * bit 14 and 1 must be set in word 83 of the device id to indicate
- * support for dma queued protocol, and bit 15 must be cleared
- */
- if ((drive->id->command_set_2 & tcq_bits) ^ tcq_mask) {
- printk(KERN_INFO "%s: TCQ not supported\n", drive->name);
- return -EIO;
- }
-
- args = kmalloc(sizeof(*args), GFP_ATOMIC);
- if (!args)
- return -ENOMEM;
-
- memset(args, 0, sizeof(ide_task_t));
- args->tfRegister[IDE_COMMAND_OFFSET] = WIN_SETFEATURES;
- args->tfRegister[IDE_FEATURE_OFFSET] = SETFEATURES_EN_WCACHE;
- args->command_type = IDE_DRIVE_TASK_NO_DATA;
- args->handler = &task_no_data_intr;
-
- if (ide_raw_taskfile(drive, args, NULL)) {
- printk(KERN_WARNING "%s: failed to enable write cache\n", drive->name);
- goto err;
- }
-
- /*
- * disable RELease interrupt, it's quicker to poll this after
- * having sent the command opcode
- */
- memset(args, 0, sizeof(ide_task_t));
- args->tfRegister[IDE_COMMAND_OFFSET] = WIN_SETFEATURES;
- args->tfRegister[IDE_FEATURE_OFFSET] = SETFEATURES_DIS_RI;
- args->command_type = IDE_DRIVE_TASK_NO_DATA;
- args->handler = &task_no_data_intr;
-
- if (ide_raw_taskfile(drive, args, NULL)) {
- printk(KERN_ERR "%s: disabling release interrupt fail\n", drive->name);
- goto err;
- }
-
-#ifdef IDE_TCQ_FIDDLE_SI
- /*
- * enable SERVICE interrupt
- */
- memset(args, 0, sizeof(ide_task_t));
- args->tfRegister[IDE_COMMAND_OFFSET] = WIN_SETFEATURES;
- args->tfRegister[IDE_FEATURE_OFFSET] = SETFEATURES_EN_SI;
- args->command_type = IDE_DRIVE_TASK_NO_DATA;
- args->handler = &task_no_data_intr;
-
- if (ide_raw_taskfile(drive, args, NULL)) {
- printk(KERN_ERR "%s: enabling service interrupt fail\n", drive->name);
- goto err;
- }
-#endif
-
- kfree(args);
- return 0;
-err:
- kfree(args);
- return -EIO;
-}
-
-/*
- * for now assume that command list is always as big as we need and don't
- * attempt to shrink it on tcq disable
- */
-static int ide_enable_queued(ide_drive_t *drive, int on)
-{
- struct ide_tcq_blacklist *itb;
- int depth = drive->using_tcq ? drive->queue_depth : 0;
-
- /*
- * disable or adjust queue depth
- */
- if (!on) {
- if (drive->using_tcq)
- printk(KERN_INFO "%s: TCQ disabled\n", drive->name);
-
- drive->using_tcq = 0;
- return 0;
- }
-
- if (ide_tcq_configure(drive)) {
- drive->using_tcq = 0;
- return 1;
- }
-
- /*
- * some drives need limited transfer size in tcq
- */
- itb = ide_find_drive_blacklist(drive);
- if (itb && itb->max_sectors) {
- if (itb->max_sectors > HWIF(drive)->rqsize)
- itb->max_sectors = HWIF(drive)->rqsize;
-
- blk_queue_max_sectors(drive->queue, itb->max_sectors);
- }
-
- /*
- * enable block tagging
- */
- if (!blk_queue_tagged(drive->queue))
- blk_queue_init_tags(drive->queue, IDE_MAX_TAG, NULL);
-
- /*
- * check auto-poll support
- */
- ide_tcq_check_autopoll(drive);
-
- if (depth != drive->queue_depth)
- printk(KERN_INFO "%s: tagged command queueing enabled, command queue depth %d\n", drive->name, drive->queue_depth);
-
- drive->using_tcq = 1;
- return 0;
-}
-
-int ide_tcq_wait_dataphase(ide_drive_t *drive)
-{
- ide_hwif_t *hwif = HWIF(drive);
- byte stat;
- int i;
-
- do {
- stat = hwif->INB(IDE_STATUS_REG);
- if (!(stat & BUSY_STAT))
- break;
-
- udelay(10);
- } while (1);
-
- if (OK_STAT(stat, READY_STAT | DRQ_STAT, drive->bad_wstat))
- return 0;
-
- i = 0;
- udelay(1);
- do {
- stat = hwif->INB(IDE_STATUS_REG);
-
- if (OK_STAT(stat, READY_STAT | DRQ_STAT, drive->bad_wstat))
- break;
-
- ++i;
- if (unlikely(i >= IDE_TCQ_WAIT))
- return 1;
-
- udelay(10);
- } while (1);
-
- return 0;
-}
-
-static int ide_tcq_check_blacklist(ide_drive_t *drive)
-{
- struct ide_tcq_blacklist *itb = ide_find_drive_blacklist(drive);
-
- if (!itb)
- return 0;
-
- return !itb->works;
-}
-
-int __ide_dma_queued_on(ide_drive_t *drive)
-{
- ide_hwif_t *hwif = HWIF(drive);
-
- if (drive->media != ide_disk)
- return 1;
- if (!drive->using_dma)
- return 1;
- if (hwif->chipset == ide_pdc4030)
- return 1;
- if (ide_tcq_check_blacklist(drive)) {
- printk(KERN_WARNING "%s: tcq forbidden by blacklist\n",
- drive->name);
- return 1;
- }
- if (hwif->drives[0].present && hwif->drives[1].present) {
- printk(KERN_WARNING "%s: only one drive on a channel supported"
- " for tcq\n", drive->name);
- return 1;
- }
- if (ata_pending_commands(drive)) {
- printk(KERN_WARNING "ide-tcq; can't toggle tcq feature on "
- "busy drive\n");
- return 1;
- }
-
- return ide_enable_queued(drive, 1);
-}
-
-int __ide_dma_queued_off(ide_drive_t *drive)
-{
- if (drive->media != ide_disk)
- return 1;
- if (ata_pending_commands(drive)) {
- printk("ide-tcq; can't toggle tcq feature on busy drive\n");
- return 1;
- }
-
- return ide_enable_queued(drive, 0);
-}
-
-static ide_startstop_t ide_dma_queued_rw(ide_drive_t *drive, u8 command)
-{
- ide_hwif_t *hwif = HWIF(drive);
- unsigned long flags;
- byte stat, feat;
-
- TCQ_PRINTK("%s: starting tag\n", drive->name);
-
- /*
- * set nIEN, tag start operation will enable again when
- * it is safe
- */
- drive_ctl_nien(drive, 1);
-
- TCQ_PRINTK("%s: sending cmd=%x\n", drive->name, command);
- hwif->OUTB(command, IDE_COMMAND_REG);
-
- if (ide_tcq_wait_altstat(drive, &stat, BUSY_STAT)) {
- printk("%s: alt stat timeout\n", drive->name);
- goto err;
- }
-
- drive_ctl_nien(drive, 0);
-
- if (stat & ERR_STAT)
- goto err;
-
- /*
- * bus not released, start dma
- */
- feat = hwif->INB(IDE_NSECTOR_REG);
- if (!(feat & REL)) {
- TCQ_PRINTK("IMMED in queued_start, feat=%x\n", feat);
- return __ide_dma_queued_start(drive);
- }
-
- /*
- * drive released the bus, clear active request and check for service
- */
- spin_lock_irqsave(&ide_lock, flags);
- HWGROUP(drive)->rq = NULL;
- __ide_tcq_set_intr(HWGROUP(drive), ide_dmaq_intr);
- spin_unlock_irqrestore(&ide_lock, flags);
-
- TCQ_PRINTK("REL in queued_start\n");
-
- stat = hwif->INB(IDE_STATUS_REG);
- if (stat & SRV_STAT)
- return ide_service(drive);
-
- return ide_released;
-err:
- ide_dump_status(drive, "rw_queued", stat);
- ide_tcq_invalidate_queue(drive);
- return ide_stopped;
-}
-
-ide_startstop_t __ide_dma_queued_read(ide_drive_t *drive)
-{
- u8 command = WIN_READDMA_QUEUED;
-
- if (drive->addressing == 1)
- command = WIN_READDMA_QUEUED_EXT;
-
- return ide_dma_queued_rw(drive, command);
-}
-
-ide_startstop_t __ide_dma_queued_write(ide_drive_t *drive)
-{
- u8 command = WIN_WRITEDMA_QUEUED;
-
- if (drive->addressing == 1)
- command = WIN_WRITEDMA_QUEUED_EXT;
-
- return ide_dma_queued_rw(drive, command);
-}
-
-ide_startstop_t __ide_dma_queued_start(ide_drive_t *drive)
-{
- ide_hwgroup_t *hwgroup = HWGROUP(drive);
- struct request *rq = hwgroup->rq;
- ide_hwif_t *hwif = HWIF(drive);
- unsigned int reading = 0;
-
- TCQ_PRINTK("ide_dma: setting up queued tag=%d\n", rq->tag);
-
- if (!hwgroup->busy)
- printk(KERN_ERR "queued_rw: hwgroup not busy\n");
-
- if (ide_tcq_wait_dataphase(drive)) {
- printk(KERN_WARNING "timeout waiting for data phase\n");
- return ide_stopped;
- }
-
- if (rq_data_dir(rq) == READ)
- reading = 1 << 3;
-
- if (ide_start_dma(hwif, drive, reading))
- return ide_stopped;
-
- ide_tcq_set_intr(hwgroup, ide_dmaq_intr);
-
- if (!hwif->ide_dma_begin(drive))
- return ide_started;
-
- return ide_stopped;
-}
+++ /dev/null
-#ifndef ALI15X3_H
-#define ALI15X3_H
-
-#include <linux/config.h>
-#include <linux/pci.h>
-#include <linux/ide.h>
-
-#define DISPLAY_ALI_TIMINGS
-
-static unsigned int init_chipset_ali15x3(struct pci_dev *, const char *);
-static void init_hwif_common_ali15x3(ide_hwif_t *);
-static void init_hwif_ali15x3(ide_hwif_t *);
-static void init_dma_ali15x3(ide_hwif_t *, unsigned long);
-
-static ide_pci_device_t ali15x3_chipsets[] __devinitdata = {
- { /* 0 */
- .vendor = PCI_VENDOR_ID_AL,
- .device = PCI_DEVICE_ID_AL_M5229,
- .name = "ALI15X3",
- .init_chipset = init_chipset_ali15x3,
- .init_iops = NULL,
- .init_hwif = init_hwif_ali15x3,
- .init_dma = init_dma_ali15x3,
- .channels = 2,
- .autodma = AUTODMA,
- .enablebits = {{0x00,0x00,0x00}, {0x00,0x00,0x00}},
- .bootable = ON_BOARD,
- .extra = 0
- },{
- .vendor = 0,
- .device = 0,
- .channels = 0,
- .bootable = EOL,
- }
-};
-
-#endif /* ALI15X3 */
+++ /dev/null
-#ifndef AMD74XX_H
-#define AMD74XX_H
-
-#include <linux/config.h>
-#include <linux/pci.h>
-#include <linux/ide.h>
-
-#define DISPLAY_AMD_TIMINGS
-
-static unsigned int init_chipset_amd74xx(struct pci_dev *, const char *);
-static void init_hwif_amd74xx(ide_hwif_t *);
-
-static ide_pci_device_t amd74xx_chipsets[] __devinitdata = {
- { /* 0 */
- .vendor = PCI_VENDOR_ID_AMD,
- .device = PCI_DEVICE_ID_AMD_COBRA_7401,
- .name = "AMD7401",
- .init_chipset = init_chipset_amd74xx,
- .init_hwif = init_hwif_amd74xx,
- .channels = 2,
- .autodma = AUTODMA,
- .enablebits = {{0x40,0x02,0x02}, {0x40,0x01,0x01}},
- .bootable = ON_BOARD,
- .extra = 0
- },{ /* 1 */
- .vendor = PCI_VENDOR_ID_AMD,
- .device = PCI_DEVICE_ID_AMD_VIPER_7409,
- .name = "AMD7409",
- .init_chipset = init_chipset_amd74xx,
- .init_hwif = init_hwif_amd74xx,
- .channels = 2,
- .autodma = AUTODMA,
- .enablebits = {{0x40,0x02,0x02}, {0x40,0x01,0x01}},
- .bootable = ON_BOARD,
- .extra = 0
- },{ /* 2 */
- .vendor = PCI_VENDOR_ID_AMD,
- .device = PCI_DEVICE_ID_AMD_VIPER_7411,
- .name = "AMD7411",
- .init_chipset = init_chipset_amd74xx,
- .init_hwif = init_hwif_amd74xx,
- .channels = 2,
- .autodma = AUTODMA,
- .enablebits = {{0x40,0x02,0x02}, {0x40,0x01,0x01}},
- .bootable = ON_BOARD,
- .extra = 0
- },{ /* 3 */
- .vendor = PCI_VENDOR_ID_AMD,
- .device = PCI_DEVICE_ID_AMD_OPUS_7441,
- .name = "AMD7441",
- .init_chipset = init_chipset_amd74xx,
- .init_hwif = init_hwif_amd74xx,
- .channels = 2,
- .autodma = AUTODMA,
- .enablebits = {{0x40,0x02,0x02}, {0x40,0x01,0x01}},
- .bootable = ON_BOARD,
- .extra = 0
- },{ /* 4 */
- .vendor = PCI_VENDOR_ID_AMD,
- .device = PCI_DEVICE_ID_AMD_8111_IDE,
- .name = "AMD8111",
- .init_chipset = init_chipset_amd74xx,
- .init_hwif = init_hwif_amd74xx,
- .autodma = AUTODMA,
- .channels = 2,
- .enablebits = {{0x40,0x02,0x02}, {0x40,0x01,0x01}},
- .bootable = ON_BOARD,
- .extra = 0
- },
- { /* 5 */
- .vendor = PCI_VENDOR_ID_NVIDIA,
- .device = PCI_DEVICE_ID_NVIDIA_NFORCE_IDE,
- .name = "NFORCE",
- .init_chipset = init_chipset_amd74xx,
- .init_hwif = init_hwif_amd74xx,
- .channels = 2,
- .autodma = AUTODMA,
- .enablebits = {{0x50,0x02,0x02}, {0x50,0x01,0x01}},
- .bootable = ON_BOARD,
- .extra = 0,
- },
- { /* 6 */
- .vendor = PCI_VENDOR_ID_NVIDIA,
- .device = PCI_DEVICE_ID_NVIDIA_NFORCE2_IDE,
- .name = "NFORCE2",
- .init_chipset = init_chipset_amd74xx,
- .init_hwif = init_hwif_amd74xx,
- .channels = 2,
- .autodma = AUTODMA,
- .enablebits = {{0x50,0x02,0x02}, {0x50,0x01,0x01}},
- .bootable = ON_BOARD,
- .extra = 0,
- },
- { /* 7 */
- .vendor = PCI_VENDOR_ID_NVIDIA,
- .device = PCI_DEVICE_ID_NVIDIA_NFORCE2S_IDE,
- .name = "NFORCE2S",
- .init_chipset = init_chipset_amd74xx,
- .init_hwif = init_hwif_amd74xx,
- .channels = 2,
- .autodma = AUTODMA,
- .enablebits = {{0x50,0x02,0x02}, {0x50,0x01,0x01}},
- .bootable = ON_BOARD,
- },
- { /* 8 */
- .vendor = PCI_VENDOR_ID_NVIDIA,
- .device = PCI_DEVICE_ID_NVIDIA_NFORCE2S_SATA,
- .name = "NFORCE2S-SATA",
- .init_chipset = init_chipset_amd74xx,
- .init_hwif = init_hwif_amd74xx,
- .channels = 2,
- .autodma = AUTODMA,
- .enablebits = {{0x50,0x02,0x02}, {0x50,0x01,0x01}},
- .bootable = ON_BOARD,
- },
- { /* 9 */
- .vendor = PCI_VENDOR_ID_NVIDIA,
- .device = PCI_DEVICE_ID_NVIDIA_NFORCE3_IDE,
- .name = "NFORCE3",
- .init_chipset = init_chipset_amd74xx,
- .init_hwif = init_hwif_amd74xx,
- .channels = 2,
- .autodma = AUTODMA,
- .enablebits = {{0x50,0x02,0x02}, {0x50,0x01,0x01}},
- .bootable = ON_BOARD,
- },
- { /* 10 */
- .vendor = PCI_VENDOR_ID_NVIDIA,
- .device = PCI_DEVICE_ID_NVIDIA_NFORCE3S_IDE,
- .name = "NFORCE3S",
- .init_chipset = init_chipset_amd74xx,
- .init_hwif = init_hwif_amd74xx,
- .channels = 2,
- .autodma = AUTODMA,
- .enablebits = {{0x50,0x02,0x02}, {0x50,0x01,0x01}},
- .bootable = ON_BOARD,
- },
- { /* 11 */
- .vendor = PCI_VENDOR_ID_NVIDIA,
- .device = PCI_DEVICE_ID_NVIDIA_NFORCE3S_SATA,
- .name = "NFORCE3S-SATA",
- .init_chipset = init_chipset_amd74xx,
- .init_hwif = init_hwif_amd74xx,
- .channels = 2,
- .autodma = AUTODMA,
- .enablebits = {{0x50,0x02,0x02}, {0x50,0x01,0x01}},
- .bootable = ON_BOARD,
- },
- { /* 12 */
- .vendor = PCI_VENDOR_ID_NVIDIA,
- .device = PCI_DEVICE_ID_NVIDIA_NFORCE3S_SATA2,
- .name = "NFORCE3S-SATA2",
- .init_chipset = init_chipset_amd74xx,
- .init_hwif = init_hwif_amd74xx,
- .channels = 2,
- .autodma = AUTODMA,
- .enablebits = {{0x50,0x02,0x02}, {0x50,0x01,0x01}},
- .bootable = ON_BOARD,
- },
- {
- .vendor = 0,
- .device = 0,
- .channels = 0,
- .bootable = EOL,
- }
-};
-
-#endif /* AMD74XX_H */
+++ /dev/null
-#ifndef CMD640_H
-#define CMD640_H
-
-#include <linux/config.h>
-#include <linux/pci.h>
-#include <linux/ide.h>
-
-#define IDE_IGNORE ((void *)-1)
-
-static ide_pci_device_t cmd640_chipsets[] __initdata = {
- {
- .vendor = PCI_VENDOR_ID_CMD,
- .device = PCI_DEVICE_ID_CMD_640,
- .name = "CMD640",
- .init_setup = NULL,
- .init_chipset = NULL,
- .init_iops = NULL,
- .init_hwif = IDE_IGNORE,
- .init_dma = NULL,
- .channels = 2,
- .autodma = NODMA,
- .enablebits = {{0x00,0x00,0x00}, {0x00,0x00,0x00}},
- .bootable = ON_BOARD,
- .extra = 0
- },{
- .vendor = 0,
- .device = 0,
- .bootable = EOL,
- }
-}
-
-#endif /* CMD640_H */
+++ /dev/null
-#ifndef CS5520_H
-#define CS5520_H
-
-#include <linux/config.h>
-#include <linux/pci.h>
-#include <linux/ide.h>
-
-#define DISPLAY_CS5520_TIMINGS
-
-static unsigned int init_chipset_cs5520(struct pci_dev *, const char *);
-static void init_hwif_cs5520(ide_hwif_t *);
-static void cs5520_init_setup_dma(struct pci_dev *dev, struct ide_pci_device_s *d, ide_hwif_t *hwif);
-
-static ide_pci_device_t cyrix_chipsets[] __devinitdata = {
- {
- .vendor = PCI_VENDOR_ID_CYRIX,
- .device = PCI_DEVICE_ID_CYRIX_5510,
- .name = "Cyrix 5510",
- .init_chipset = init_chipset_cs5520,
- .init_setup_dma = cs5520_init_setup_dma,
- .init_iops = NULL,
- .init_hwif = init_hwif_cs5520,
- .isa_ports = 1,
- .channels = 2,
- .autodma = AUTODMA,
- .bootable = ON_BOARD,
- .extra = 0,
- },
- {
- .vendor = PCI_VENDOR_ID_CYRIX,
- .device = PCI_DEVICE_ID_CYRIX_5520,
- .name = "Cyrix 5520",
- .init_chipset = init_chipset_cs5520,
- .init_setup_dma = cs5520_init_setup_dma,
- .init_iops = NULL,
- .init_hwif = init_hwif_cs5520,
- .isa_ports = 1,
- .channels = 2,
- .autodma = AUTODMA,
- .bootable = ON_BOARD,
- .extra = 0,
- }
-};
-
-
-#endif /* CS5520_H */
-
-
+++ /dev/null
-#ifndef CS5530_H
-#define CS5530_H
-
-#include <linux/config.h>
-#include <linux/pci.h>
-#include <linux/ide.h>
-
-#define DISPLAY_CS5530_TIMINGS
-
-static unsigned int init_chipset_cs5530(struct pci_dev *, const char *);
-static void init_hwif_cs5530(ide_hwif_t *);
-
-static ide_pci_device_t cs5530_chipsets[] __devinitdata = {
- { /* 0 */
- .vendor = PCI_VENDOR_ID_CYRIX,
- .device = PCI_DEVICE_ID_CYRIX_5530_IDE,
- .name = "CS5530",
- .init_chipset = init_chipset_cs5530,
- .init_iops = NULL,
- .init_hwif = init_hwif_cs5530,
- .channels = 2,
- .autodma = AUTODMA,
- .enablebits = {{0x00,0x00,0x00}, {0x00,0x00,0x00}},
- .bootable = ON_BOARD,
- .extra = 0,
- },{
- .vendor = 0,
- .device = 0,
- .channels = 0,
- .bootable = EOL,
- }
-};
-
-#endif /* CS5530_H */
+++ /dev/null
-#ifndef NS87415_H
-#define NS87415_H
-
-#include <linux/config.h>
-#include <linux/pci.h>
-#include <linux/ide.h>
-
-static void init_hwif_ns87415(ide_hwif_t *);
-
-static ide_pci_device_t ns87415_chipsets[] __devinitdata = {
- { /* 0 */
- .vendor = PCI_VENDOR_ID_NS,
- .device = PCI_DEVICE_ID_NS_87415,
- .name = "NS87415",
- .init_chipset = NULL,
- .init_iops = NULL,
- .init_hwif = init_hwif_ns87415,
- .channels = 2,
- .autodma = AUTODMA,
- .enablebits = {{0x00,0x00,0x00}, {0x00,0x00,0x00}},
- .bootable = ON_BOARD,
- .extra = 0,
- },{
- .vendor = 0,
- .device = 0,
- .channels = 0,
- .bootable = EOL,
- }
-};
-
-#endif /* NS87415_H */
+++ /dev/null
-#ifndef RZ100X_H
-#define RZ100X_H
-
-#include <linux/config.h>
-#include <linux/pci.h>
-#include <linux/ide.h>
-
-static void init_hwif_rz1000(ide_hwif_t *);
-
-static ide_pci_device_t rz1000_chipsets[] __devinitdata = {
-{
- .vendor = PCI_VENDOR_ID_PCTECH,
- .device = PCI_DEVICE_ID_PCTECH_RZ1000,
- .name = "RZ1000",
- .init_chipset = NULL,
- .init_iops = NULL,
- .init_hwif = init_hwif_rz1000,
- .init_dma = NULL,
- .channels = 2,
- .autodma = NODMA,
- .enablebits = {{0x00,0x00,0x00}, {0x00,0x00,0x00}},
- .bootable = ON_BOARD,
- .extra = 0,
- },{
- .vendor = PCI_VENDOR_ID_PCTECH,
- .device = PCI_DEVICE_ID_PCTECH_RZ1001,
- .name = "RZ1001",
- .init_chipset = NULL,
- .init_iops = NULL,
- .init_hwif = init_hwif_rz1000,
- .init_dma = NULL,
- .channels = 2,
- .autodma = NODMA,
- .enablebits = {{0x00,0x00,0x00}, {0x00,0x00,0x00}},
- .bootable = ON_BOARD,
- .extra = 0,
- },{
- .vendor = 0,
- .device = 0,
- .channels = 0,
- .bootable = EOL,
- }
-};
-
-#endif /* RZ100X_H */
+++ /dev/null
-#ifndef SC1200_H
-#define SC1200_H
-
-#include <linux/config.h>
-#include <linux/pci.h>
-#include <linux/ide.h>
-
-#define DISPLAY_SC1200_TIMINGS
-
-static unsigned int init_chipset_sc1200(struct pci_dev *, const char *);
-static void init_hwif_sc1200(ide_hwif_t *);
-
-static ide_pci_device_t sc1200_chipsets[] __devinitdata = {
- { /* 0 */
- .vendor = PCI_VENDOR_ID_NS,
- .device = PCI_DEVICE_ID_NS_SCx200_IDE,
- .name = "SC1200",
- .init_chipset = init_chipset_sc1200,
- .init_iops = NULL,
- .init_hwif = init_hwif_sc1200,
- .channels = 2,
- .autodma = AUTODMA,
- .enablebits = {{0x00,0x00,0x00}, {0x00,0x00,0x00}},
- .bootable = ON_BOARD,
- .extra = 0,
- },{
- .vendor = 0,
- .device = 0,
- .channels = 0,
- .bootable = EOL,
- }
-};
-
-#endif /* SC1200_H */
+++ /dev/null
-#ifndef SIIMAGE_H
-#define SIIMAGE_H
-
-#include <linux/config.h>
-#include <linux/pci.h>
-#include <linux/ide.h>
-
-#include <asm/io.h>
-
-#define DISPLAY_SIIMAGE_TIMINGS
-
-#undef SIIMAGE_VIRTUAL_DMAPIO
-#undef SIIMAGE_BUFFERED_TASKFILE
-#undef SIIMAGE_LARGE_DMA
-
-#define SII_DEBUG 0
-
-#if SII_DEBUG
-#define siiprintk(x...) printk(x)
-#else
-#define siiprintk(x...)
-#endif
-
-static unsigned int init_chipset_siimage(struct pci_dev *, const char *);
-static void init_iops_siimage(ide_hwif_t *);
-static void init_hwif_siimage(ide_hwif_t *);
-
-static ide_pci_device_t siimage_chipsets[] __devinitdata = {
- { /* 0 */
- .vendor = PCI_VENDOR_ID_CMD,
- .device = PCI_DEVICE_ID_SII_680,
- .name = "SiI680",
- .init_chipset = init_chipset_siimage,
- .init_iops = init_iops_siimage,
- .init_hwif = init_hwif_siimage,
- .channels = 2,
- .autodma = AUTODMA,
- .enablebits = {{0x00,0x00,0x00}, {0x00,0x00,0x00}},
- .bootable = ON_BOARD,
- .extra = 0,
- },{ /* 1 */
- .vendor = PCI_VENDOR_ID_CMD,
- .device = PCI_DEVICE_ID_SII_3112,
- .name = "SiI3112 Serial ATA",
- .init_chipset = init_chipset_siimage,
- .init_iops = init_iops_siimage,
- .init_hwif = init_hwif_siimage,
- .channels = 2,
- .autodma = AUTODMA,
- .enablebits = {{0x00,0x00,0x00}, {0x00,0x00,0x00}},
- .bootable = ON_BOARD,
- .extra = 0,
- },{ /* 2 */
- .vendor = PCI_VENDOR_ID_CMD,
- .device = PCI_DEVICE_ID_SII_1210SA,
- .name = "Adaptec AAR-1210SA",
- .init_chipset = init_chipset_siimage,
- .init_iops = init_iops_siimage,
- .init_hwif = init_hwif_siimage,
- .channels = 2,
- .autodma = AUTODMA,
- .enablebits = {{0x00,0x00,0x00}, {0x00,0x00,0x00}},
- .bootable = ON_BOARD,
- .extra = 0,
- },{
- .vendor = 0,
- .device = 0,
- .channels = 0,
- .bootable = EOL,
- }
-};
-
-#endif /* SIIMAGE_H */
+++ /dev/null
-#ifndef SIS5513_H
-#define SIS5513_H
-
-#include <linux/config.h>
-#include <linux/pci.h>
-#include <linux/ide.h>
-
-#define DISPLAY_SIS_TIMINGS
-
-static unsigned int init_chipset_sis5513(struct pci_dev *, const char *);
-static void init_hwif_sis5513(ide_hwif_t *);
-
-static ide_pci_device_t sis5513_chipsets[] __devinitdata = {
- { /* 0 */
- .vendor = PCI_VENDOR_ID_SI,
- .device = PCI_DEVICE_ID_SI_5513,
- .name = "SIS5513",
- .init_chipset = init_chipset_sis5513,
- .init_iops = NULL,
- .init_hwif = init_hwif_sis5513,
- .channels = 2,
- .autodma = NOAUTODMA,
- .enablebits = {{0x4a,0x02,0x02}, {0x4a,0x04,0x04}},
- .bootable = ON_BOARD,
- .extra = 0
- },{
- .vendor = 0,
- .device = 0,
- .channels = 0,
- .bootable = EOL,
- }
-};
-
-#endif /* SIS5513_H */
+++ /dev/null
-#ifndef W82C105_H
-#define W82C105_H
-
-#include <linux/config.h>
-#include <linux/pci.h>
-#include <linux/ide.h>
-
-static unsigned int init_chipset_sl82c105(struct pci_dev *, const char *);
-static void init_hwif_sl82c105(ide_hwif_t *);
-static void init_dma_sl82c105(ide_hwif_t *, unsigned long);
-
-static ide_pci_device_t sl82c105_chipsets[] __devinitdata = {
- { /* 0 */
- .vendor = PCI_VENDOR_ID_WINBOND,
- .device = PCI_DEVICE_ID_WINBOND_82C105,
- .name = "W82C105",
- .init_chipset = init_chipset_sl82c105,
- .init_iops = NULL,
- .init_hwif = init_hwif_sl82c105,
- .init_dma = init_dma_sl82c105,
- .channels = 2,
- .autodma = NOAUTODMA,
- .enablebits = {{0x40,0x01,0x01}, {0x40,0x10,0x10}},
- .bootable = ON_BOARD,
- .extra = 0,
- },{
- .vendor = 0,
- .device = 0,
- .channels = 0,
- .bootable = EOL,
- }
-};
-
-#endif /* W82C105_H */
+++ /dev/null
-#ifndef SLC90E66_H
-#define SLC90E66_H
-
-#include <linux/config.h>
-#include <linux/pci.h>
-#include <linux/ide.h>
-
-#define DISPLAY_SLC90E66_TIMINGS
-
-#define SLC90E66_DEBUG_DRIVE_INFO 0
-
-static unsigned int init_chipset_slc90e66(struct pci_dev *, const char *);
-static void init_hwif_slc90e66(ide_hwif_t *);
-
-static ide_pci_device_t slc90e66_chipsets[] __devinitdata = {
- { /* 0 */
- .vendor = PCI_VENDOR_ID_EFAR,
- .device = PCI_DEVICE_ID_EFAR_SLC90E66_1,
- .name = "SLC90E66",
- .init_chipset = init_chipset_slc90e66,
- .init_iops = NULL,
- .init_hwif = init_hwif_slc90e66,
- .channels = 2,
- .autodma = AUTODMA,
- .enablebits = {{0x41,0x80,0x80}, {0x43,0x80,0x80}},
- .bootable = ON_BOARD,
- .extra = 0,
- },{
- .vendor = 0,
- .device = 0,
- .channels = 0,
- .bootable = EOL,
- }
-};
-
-#endif /* SLC90E66_H */
+++ /dev/null
-/*
- * triflex.h
- *
- * Copyright (C) 2002 Hewlett-Packard Development Group, L.P.
- * Author: Torben Mathiasen <torben.mathiasen@hp.com>
- *
- */
-#ifndef TRIFLEX_H
-#define TRIFLEX_H
-
-#include <linux/config.h>
-#include <linux/pci.h>
-#include <linux/ide.h>
-
-static unsigned int __devinit init_chipset_triflex(struct pci_dev *, const char *);
-static void init_hwif_triflex(ide_hwif_t *);
-
-static ide_pci_device_t triflex_devices[] __devinitdata = {
- {
- .vendor = PCI_VENDOR_ID_COMPAQ,
- .device = PCI_DEVICE_ID_COMPAQ_TRIFLEX_IDE,
- .name = "TRIFLEX",
- .init_chipset = init_chipset_triflex,
- .init_iops = NULL,
- .init_hwif = init_hwif_triflex,
- .channels = 2,
- .autodma = AUTODMA,
- .enablebits = {{0x80, 0x01, 0x01}, {0x80, 0x02, 0x02}},
- .bootable = ON_BOARD,
- },{
- .bootable = EOL,
- }
-};
-
-static struct pci_device_id triflex_pci_tbl[] = {
- { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_TRIFLEX_IDE, PCI_ANY_ID,
- PCI_ANY_ID, 0, 0, 0 },
- { 0, },
-};
-MODULE_DEVICE_TABLE(pci, triflex_pci_tbl);
-
-#endif /* TRIFLEX_H */
+++ /dev/null
-#ifndef TRM290_H
-#define TRM290_H
-
-#include <linux/config.h>
-#include <linux/pci.h>
-#include <linux/ide.h>
-
-extern void init_hwif_trm290(ide_hwif_t *);
-
-static ide_pci_device_t trm290_chipsets[] __devinitdata = {
- { /* 0 */
- .vendor = PCI_VENDOR_ID_TEKRAM,
- .device = PCI_DEVICE_ID_TEKRAM_DC290,
- .name = "TRM290",
- .init_chipset = NULL,
- .init_iops = NULL,
- .init_hwif = init_hwif_trm290,
- .init_dma = NULL,
- .channels = 2,
- .autodma = NOAUTODMA,
- .enablebits = {{0x00,0x00,0x00}, {0x00,0x00,0x00}},
- .bootable = ON_BOARD,
- .extra = 0,
- },{
- .vendor = 0,
- .device = 0,
- .channels = 0,
- .bootable = EOL,
- }
-};
-
-#endif /* TRM290_H */
+++ /dev/null
-#ifndef VIA82CXXX_H
-#define VIA82CXXX_H
-
-#include <linux/config.h>
-#include <linux/pci.h>
-#include <linux/ide.h>
-
-#define DISPLAY_VIA_TIMINGS
-
-static unsigned int init_chipset_via82cxxx(struct pci_dev *, const char *);
-static void init_hwif_via82cxxx(ide_hwif_t *);
-
-static ide_pci_device_t via82cxxx_chipsets[] __devinitdata = {
- { /* 0 */
- .vendor = PCI_VENDOR_ID_VIA,
- .device = PCI_DEVICE_ID_VIA_82C576_1,
- .name = "VP_IDE",
- .init_chipset = init_chipset_via82cxxx,
- .init_hwif = init_hwif_via82cxxx,
- .channels = 2,
- .autodma = NOAUTODMA,
- .enablebits = {{0x40,0x02,0x02}, {0x40,0x01,0x01}},
- .bootable = ON_BOARD,
- .extra = 0,
- },{ /* 1 */
- .vendor = PCI_VENDOR_ID_VIA,
- .device = PCI_DEVICE_ID_VIA_82C586_1,
- .name = "VP_IDE",
- .init_chipset = init_chipset_via82cxxx,
- .init_hwif = init_hwif_via82cxxx,
- .channels = 2,
- .autodma = NOAUTODMA,
- .enablebits = {{0x40,0x02,0x02}, {0x40,0x01,0x01}},
- .bootable = ON_BOARD,
- .extra = 0,
- },{
- .vendor = 0,
- .device = 0,
- .channels = 0,
- .bootable = EOL,
- }
-};
-
-#endif /* VIA82CXXX_H */
+++ /dev/null
-/*
- * Copyright (C) 2001 Broadcom Corporation
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
- */
-
-/* Derived loosely from ide-pmac.c, so:
- *
- * Copyright (C) 1998 Paul Mackerras.
- * Copyright (C) 1995-1998 Mark Lord
- */
-#include <linux/config.h>
-#include <linux/types.h>
-#include <linux/kernel.h>
-#include <linux/sched.h>
-#include <linux/init.h>
-#include <linux/delay.h>
-#include <linux/ide.h>
-#include <asm/irq.h>
-#include <asm/io.h>
-#include <asm/sibyte/sb1250_int.h>
-
-#define __IDE_SWARM_C
-
-#include <asm/sibyte/swarm_ide.h>
-
-void __init swarm_ide_probe(void)
-{
- int i;
- ide_hwif_t *hwif;
- /*
- * Find the first untaken slot in hwifs
- */
- for (i = 0; i < MAX_HWIFS; i++) {
- if (!ide_hwifs[i].io_ports[IDE_DATA_OFFSET]) {
- break;
- }
- }
- if (i == MAX_HWIFS) {
- printk("No space for SWARM onboard IDE driver in ide_hwifs[]. Not enabled.\n");
- return;
- }
-
- /* Set up our stuff */
- hwif = &ide_hwifs[i];
- hwif->hw.io_ports[IDE_DATA_OFFSET] = SWARM_IDE_REG(0x1f0);
- hwif->hw.io_ports[IDE_ERROR_OFFSET] = SWARM_IDE_REG(0x1f1);
- hwif->hw.io_ports[IDE_NSECTOR_OFFSET] = SWARM_IDE_REG(0x1f2);
- hwif->hw.io_ports[IDE_SECTOR_OFFSET] = SWARM_IDE_REG(0x1f3);
- hwif->hw.io_ports[IDE_LCYL_OFFSET] = SWARM_IDE_REG(0x1f4);
- hwif->hw.io_ports[IDE_HCYL_OFFSET] = SWARM_IDE_REG(0x1f5);
- hwif->hw.io_ports[IDE_SELECT_OFFSET] = SWARM_IDE_REG(0x1f6);
- hwif->hw.io_ports[IDE_STATUS_OFFSET] = SWARM_IDE_REG(0x1f7);
- hwif->hw.io_ports[IDE_CONTROL_OFFSET] = SWARM_IDE_REG(0x3f6);
- hwif->hw.io_ports[IDE_IRQ_OFFSET] = SWARM_IDE_REG(0x3f7);
-// hwif->hw->ack_intr = swarm_ide_ack_intr;
- hwif->hw.irq = SWARM_IDE_INT;
-#if 0
- hwif->iops = swarm_iops;
-#else
- hwif->OUTB = hwif->OUTBP = swarm_outb;
- hwif->OUTW = hwif->OUTWP = swarm_outw;
- hwif->OUTL = hwif->OUTLP = swarm_outl;
- hwif->OUTSW = hwif->OUTSWP = swarm_outsw;
- hwif->OUTSL = hwif->OUTSLP = swarm_outsl;
- hwif->INB = hwif->INBP = swarm_inb;
- hwif->INW = hwif->INWP = swarm_inw;
- hwif->INL = hwif->INLP = swarm_inl;
- hwif->INSW = hwif->INSWP = swarm_insw;
- hwif->INSL = hwif->INSLP = swarm_insl;
-#endif
-#if 0
- hwif->pioops = swarm_pio_ops;
-#else
- hwif->ata_input_data = swarm_ata_input_data;
- hwif->ata_output_data = swarm_ata_output_data;
- hwif->atapi_input_bytes = swarm_atapi_input_bytes;
- hwif->atapi_output_bytes = swarm_atapi_output_bytes;
-#endif
- memcpy(hwif->io_ports, hwif->hw.io_ports, sizeof(hwif->io_ports));
- hwif->irq = hwif->hw.irq;
- printk("SWARM onboard IDE configured as device %i\n", i);
-
-#ifndef HWIF_PROBE_CLASSIC_METHOD
- probe_hwif_init(hwif->index);
-#endif /* HWIF_PROBE_CLASSIC_METHOD */
-
-}
-
+++ /dev/null
-/* auto_irq.c: Auto-configure IRQ lines for linux. */
-/*
- Written 1994 by Donald Becker.
-
- The author may be reached as becker@scyld.com
-
- This code is a general-purpose IRQ line detector for devices with
- jumpered IRQ lines. If you can make the device raise an IRQ (and
- that IRQ line isn't already being used), these routines will tell
- you what IRQ line it's using -- perfect for those oh-so-cool boot-time
- device probes!
-
- To use this, first call autoirq_setup(timeout). TIMEOUT is how many
- 'jiffies' (1/100 sec.) to detect other devices that have active IRQ lines,
- and can usually be zero at boot. 'autoirq_setup()' returns the bit
- vector of nominally-available IRQ lines (lines may be physically in-use,
- but not yet registered to a device).
- Next, set up your device to trigger an interrupt.
- Finally call autoirq_report(TIMEOUT) to find out which IRQ line was
- most recently active. The TIMEOUT should usually be zero, but may
- be set to the number of jiffies to wait for a slow device to raise an IRQ.
-
- The idea of using the setup timeout to filter out bogus IRQs came from
- the serial driver.
-*/
-
-
-#ifdef version
-static const char *version=
-"auto_irq.c:v1.11 Donald Becker (becker@scyld.com)";
-#endif
-
-#include <linux/module.h>
-#include <linux/jiffies.h>
-#include <linux/delay.h>
-#include <asm/bitops.h>
-#include <asm/io.h>
-#include <asm/irq.h>
-#include <linux/netdevice.h>
-
-static unsigned long irqs;
-
-void autoirq_setup(int waittime)
-{
- irqs = probe_irq_on();
-}
-
-#define BUSY_LOOP_UNTIL(j) while ((long)(jiffies-(j)) < 0) ;
-int autoirq_report(int waittime)
-{
- unsigned long delay = jiffies + waittime;
- BUSY_LOOP_UNTIL(delay)
- return probe_irq_off(irqs);
-}
-
-EXPORT_SYMBOL(autoirq_setup);
-EXPORT_SYMBOL(autoirq_report);
-
-\f
-/*
- * Local variables:
- * compile-command: "gcc -DKERNEL -Wall -O6 -fomit-frame-pointer -I/usr/src/linux/net/tcp -c auto_irq.c"
- * version-control: t
- * kept-new-versions: 5
- * c-indent-level: 4
- * tab-width: 4
- * End:
- */
+++ /dev/null
-/*
-** *************************************************************************
-**
-**
-** R C I F . H
-**
-**
-** RedCreek InterFace include file.
-**
-** ---------------------------------------------------------------------
-** --- Copyright (c) 1998-1999, RedCreek Communications Inc. ---
-** --- All rights reserved. ---
-** ---------------------------------------------------------------------
-**
-** File Description:
-**
-** Header file private ioctl commands.
-**
-**
-** This program is free software; you can redistribute it and/or modify
-** it under the terms of the GNU General Public License as published by
-** the Free Software Foundation; either version 2 of the License, or
-** (at your option) any later version.
-
-** This program is distributed in the hope that it will be useful,
-** but WITHOUT ANY WARRANTY; without even the implied warranty of
-** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-** GNU General Public License for more details.
-
-** You should have received a copy of the GNU General Public License
-** along with this program; if not, write to the Free Software
-** Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
-** *************************************************************************
-*/
-
-#ifndef RCIF_H
-#define RCIF_H
-
-/* The following protocol revision # should be incremented every time
- a new protocol or new structures are used in this file. */
-int USER_PROTOCOL_REV = 2; /* used to track different protocol revisions */
-
-/* define a single TCB & buffer */
-typedef struct { /* a single buffer */
- U32 context; /* context */
- U32 scount; /* segment count */
- U32 size; /* segment size */
- U32 addr; /* segment physical address */
-} __attribute__ ((packed))
- singleB, *psingleB;
-typedef struct { /* a single TCB */
- /*
- ** +-----------------------+
- ** | 1 | one buffer in the TCB
- ** +-----------------------+
- ** | <user's Context> | user's buffer reference
- ** +-----------------------+
- ** | 1 | one segment buffer
- ** +-----------------------+ _
- ** | <buffer size> | size \
- ** +-----------------------+ \ segment descriptor
- ** | <physical address> | physical address of buffer /
- ** +-----------------------+ _/
- */
- U32 bcount; /* buffer count */
- singleB b; /* buffer */
-
-} __attribute__ ((packed))
- singleTCB, *psingleTCB;
-
-/*
- When adding new entries, please add all 5 related changes, since
- it helps keep everything consistent:
- 1) User structure entry
- 2) User data entry
- 3) Structure short-cut entry
- 4) Data short-cut entry
- 5) Command identifier entry
-
- For Example ("GETSPEED"):
- 1) struct RCgetspeed_tag { U32 LinkSpeedCode; } RCgetspeed;
- 2) struct RCgetspeed_tag *getspeed;
- 3) #define RCUS_GETSPEED data.RCgetspeed;
- 4) #define RCUD_GETSPEED _RC_user_data.getspeed
- 5) #define RCUC_GETSPEED 0x02
-
- Notes for the "GETSPEED" entry, above:
- 1) RCgetspeed - RC{name}
- RCgetspeed_tag - RC{name}_tag
- LinkSpeedCode - create any structure format desired (not too large,
- since memory will be unioned with all other entries)
- 2) RCgetspeed_tag - RC{name}_tag chosen in #1
- getspeed - arbitrary name (ptr to structure in #1)
- 3) RCUS_GETSPEED - RCUS_{NAME} ("NAME" & "name" do not have to the same)
- data.RCgetspeed - data.RC{name} ("RC{name}" from #1)
- 4) RCUD_GETSPEED - _RC_user_data.getspeed ("getspeed" from #2)
- 5) RCUC_GETSPEED - unique hex identifier entry.
-*/
-
-typedef struct RC_user_tag RCuser_struct;
-
-/* 1) User structure entry */
-struct RC_user_tag {
- int cmd;
- union {
- /* GETINFO structure */
- struct RCgetinfo_tag {
- unsigned long int mem_start;
- unsigned long int mem_end;
- unsigned long int base_addr;
- unsigned char irq;
- unsigned char dma;
- unsigned char port;
- } RCgetinfo; /* <---- RCgetinfo */
-
- /* GETSPEED structure */
- struct RCgetspeed_tag {
- U32 LinkSpeedCode;
- } RCgetspeed; /* <---- RCgetspeed */
-
- /* SETSPEED structure */
- struct RCsetspeed_tag {
- U16 LinkSpeedCode;
- } RCsetspeed; /* <---- RCsetspeed */
-
- /* GETPROM structure */
- struct RCgetprom_tag {
- U32 PromMode;
- } RCgetprom; /* <---- RCgetprom */
-
- /* SETPROM structure */
- struct RCsetprom_tag {
- U16 PromMode;
- } RCsetprom; /* <---- RCsetprom */
-
- /* GETBROADCAST structure */
- struct RCgetbroadcast_tag {
- U32 BroadcastMode;
- } RCgetbroadcast; /* <---- RCgetbroadcast */
-
- /* SETBROADCAST structure */
- struct RCsetbroadcast_tag {
- U16 BroadcastMode;
- } RCsetbroadcast; /* <---- RCsetbroadcast */
-
- /* GETFIRMWAREVER structure */
-#define FirmStringLen 80
- struct RCgetfwver_tag {
- U8 FirmString[FirmStringLen];
- } RCgetfwver; /* <---- RCgetfwver */
-
- /* GETIPANDMASK structure */
- struct RCgetipnmask_tag {
- U32 IpAddr;
- U32 NetMask;
- } RCgetipandmask; /* <---- RCgetipandmask */
-
- /* SETIPANDMASK structure */
- struct RCsetipnmask_tag {
- U32 IpAddr;
- U32 NetMask;
- } RCsetipandmask; /* <---- RCsetipandmask */
-
- /* GETMAC structure */
-#define MAC_SIZE 10
- struct RCgetmac_tag {
- U8 mac[MAC_SIZE];
- } RCgetmac; /* <---- RCgetmac */
-
- /* SETMAC structure */
- struct RCsetmac_tag {
- U8 mac[MAC_SIZE];
- } RCsetmac; /* <---- RCsetmac */
-
- /* GETLINKSTATUS structure */
- struct RCgetlnkstatus_tag {
- U32 ReturnStatus;
- } RCgetlnkstatus; /* <---- RCgetlnkstatus */
-
- /* GETLINKSTATISTICS structure */
- struct RCgetlinkstats_tag {
- RCLINKSTATS StatsReturn;
- } RCgetlinkstats; /* <---- RCgetlinkstats */
-
- /* DEFAULT structure (when no command was recognized) */
- struct RCdefault_tag {
- int rc;
- } RCdefault; /* <---- RCdefault */
-
- } data;
-
-}; /* struct RC_user_tag { ... } */
-
-/* 2) User data entry */
-/* RCUD = RedCreek User Data */
-union RC_user_data_tag { /* structure tags used are taken from RC_user_tag structure above */
- struct RCgetinfo_tag *getinfo;
- struct RCgetspeed_tag *getspeed;
- struct RCgetprom_tag *getprom;
- struct RCgetbroadcast_tag *getbroadcast;
- struct RCgetfwver_tag *getfwver;
- struct RCgetipnmask_tag *getipandmask;
- struct RCgetmac_tag *getmac;
- struct RCgetlnkstatus_tag *getlinkstatus;
- struct RCgetlinkstats_tag *getlinkstatistics;
- struct RCdefault_tag *rcdefault;
- struct RCsetspeed_tag *setspeed;
- struct RCsetprom_tag *setprom;
- struct RCsetbroadcast_tag *setbroadcast;
- struct RCsetipnmask_tag *setipandmask;
- struct RCsetmac_tag *setmac;
-} _RC_user_data; /* declare as a global, so the defines below will work */
-
-/* 3) Structure short-cut entry */
-/* define structure short-cuts *//* structure names are taken from RC_user_tag structure above */
-#define RCUS_GETINFO data.RCgetinfo;
-#define RCUS_GETSPEED data.RCgetspeed;
-#define RCUS_GETPROM data.RCgetprom;
-#define RCUS_GETBROADCAST data.RCgetbroadcast;
-#define RCUS_GETFWVER data.RCgetfwver;
-#define RCUS_GETIPANDMASK data.RCgetipandmask;
-#define RCUS_GETMAC data.RCgetmac;
-#define RCUS_GETLINKSTATUS data.RCgetlnkstatus;
-#define RCUS_GETLINKSTATISTICS data.RCgetlinkstats;
-#define RCUS_DEFAULT data.RCdefault;
-#define RCUS_SETSPEED data.RCsetspeed;
-#define RCUS_SETPROM data.RCsetprom;
-#define RCUS_SETBROADCAST data.RCsetbroadcast;
-#define RCUS_SETIPANDMASK data.RCsetipandmask;
-#define RCUS_SETMAC data.RCsetmac;
-
-/* 4) Data short-cut entry */
-/* define data short-cuts *//* pointer names are from RC_user_data_tag union (just below RC_user_tag) */
-#define RCUD_GETINFO _RC_user_data.getinfo
-#define RCUD_GETSPEED _RC_user_data.getspeed
-#define RCUD_GETPROM _RC_user_data.getprom
-#define RCUD_GETBROADCAST _RC_user_data.getbroadcast
-#define RCUD_GETFWVER _RC_user_data.getfwver
-#define RCUD_GETIPANDMASK _RC_user_data.getipandmask
-#define RCUD_GETMAC _RC_user_data.getmac
-#define RCUD_GETLINKSTATUS _RC_user_data.getlinkstatus
-#define RCUD_GETLINKSTATISTICS _RC_user_data.getlinkstatistics
-#define RCUD_DEFAULT _RC_user_data.rcdefault
-#define RCUD_SETSPEED _RC_user_data.setspeed
-#define RCUD_SETPROM _RC_user_data.setprom
-#define RCUD_SETBROADCAST _RC_user_data.setbroadcast
-#define RCUD_SETIPANDMASK _RC_user_data.setipandmask
-#define RCUD_SETMAC _RC_user_data.setmac
-
-/* 5) Command identifier entry */
-/* define command identifiers */
-#define RCUC_GETINFO 0x01
-#define RCUC_GETSPEED 0x02
-#define RCUC_GETFWVER 0x03
-#define RCUC_GETIPANDMASK 0x04
-#define RCUC_GETMAC 0x05
-#define RCUC_GETLINKSTATUS 0x06
-#define RCUC_GETLINKSTATISTICS 0x07
-#define RCUC_GETPROM 0x14
-#define RCUC_GETBROADCAST 0x15
-#define RCUC_DEFAULT 0xff
-#define RCUC_SETSPEED 0x08
-#define RCUC_SETIPANDMASK 0x09
-#define RCUC_SETMAC 0x0a
-#define RCUC_SETPROM 0x16
-#define RCUC_SETBROADCAST 0x17
-
-/* define ioctl commands to use, when talking to RC 45/PCI driver */
-#define RCU_PROTOCOL_REV SIOCDEVPRIVATE
-#define RCU_COMMAND SIOCDEVPRIVATE+1
-
-/*
- Intended use for the above defines is shown below (GETINFO, as this example):
-
- RCuser_struct RCuser; // declare RCuser structure
- struct ifreq ifr; // declare an interface request structure
-
- RCuser.cmd = RCUC_GETINFO; // set user command to GETINFO
- ifr->ifr_data = (caddr_t) &RCuser; // set point to user structure
-
- sock = socket(AF_INET, SOCK_RAW, IPPROTO_RAW); // get a socket
- ioctl(sock, RCU_COMMAND, &ifr); // do ioctl on socket
-
- RCUD_GETINFO = &RCuser.RCUS_GETINFO; // set data pointer for GETINFO
-
- // print results
- printf("memory 0x%lx-0x%lx, base address 0x%x, irq 0x%x\n",
- RCUD_GETINFO->mem_start, RCUD_GETINFO->mem_end,
- RCUD_GETINFO->base_addr, RCUD_GETINFO->irq);
-*/
-
-#endif /* RCIF_H */
+++ /dev/null
-/*
-** *************************************************************************
-**
-**
-** R C L A N M T L . C $Revision: 6 $
-**
-**
-** RedCreek I2O LAN Message Transport Layer program module.
-**
-** ---------------------------------------------------------------------
-** --- Copyright (c) 1997-1999, RedCreek Communications Inc. ---
-** --- All rights reserved. ---
-** ---------------------------------------------------------------------
-**
-** File Description:
-**
-** Host side I2O (Intelligent I/O) LAN message transport layer.
-**
-** This program is free software; you can redistribute it and/or modify
-** it under the terms of the GNU General Public License as published by
-** the Free Software Foundation; either version 2 of the License, or
-** (at your option) any later version.
-
-** This program is distributed in the hope that it will be useful,
-** but WITHOUT ANY WARRANTY; without even the implied warranty of
-** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-** GNU General Public License for more details.
-
-** You should have received a copy of the GNU General Public License
-** along with this program; if not, write to the Free Software
-** Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
-**
-** 1998-1999, LAN API was modified and enhanced by Alice Hennessy.
-**
-** Sometime in 1997, LAN API was written from scratch by Wendell Nichols.
-** *************************************************************************
-*/
-
-#define DEBUG 1
-
-#define RC_LINUX_MODULE
-#include "rclanmtl.h"
-
- /* RedCreek LAN device Target ID */
-#define RC_LAN_TARGET_ID 0x10
- /* RedCreek's OSM default LAN receive Initiator */
-#define DEFAULT_RECV_INIT_CONTEXT 0xA17
-
-/*
-** I2O message structures
-*/
-
-#define I2O_TID_SZ 12
-#define I2O_FUNCTION_SZ 8
-
-/* Transaction Reply Lists (TRL) Control Word structure */
-
-#define I2O_TRL_FLAGS_SINGLE_FIXED_LENGTH 0x00
-#define I2O_TRL_FLAGS_SINGLE_VARIABLE_LENGTH 0x40
-#define I2O_TRL_FLAGS_MULTIPLE_FIXED_LENGTH 0x80
-
-/* LAN Class specific functions */
-
-#define I2O_LAN_PACKET_SEND 0x3B
-#define I2O_LAN_SDU_SEND 0x3D
-#define I2O_LAN_RECEIVE_POST 0x3E
-#define I2O_LAN_RESET 0x35
-#define I2O_LAN_SHUTDOWN 0x37
-
-/* Private Class specfic function */
-#define I2O_PRIVATE 0xFF
-
-/* I2O Executive Function Codes. */
-
-#define I2O_EXEC_ADAPTER_ASSIGN 0xB3
-#define I2O_EXEC_ADAPTER_READ 0xB2
-#define I2O_EXEC_ADAPTER_RELEASE 0xB5
-#define I2O_EXEC_BIOS_INFO_SET 0xA5
-#define I2O_EXEC_BOOT_DEVICE_SET 0xA7
-#define I2O_EXEC_CONFIG_VALIDATE 0xBB
-#define I2O_EXEC_CONN_SETUP 0xCA
-#define I2O_EXEC_DEVICE_ASSIGN 0xB7
-#define I2O_EXEC_DEVICE_RELEASE 0xB9
-#define I2O_EXEC_HRT_GET 0xA8
-#define I2O_EXEC_IOP_CLEAR 0xBE
-#define I2O_EXEC_IOP_CONNECT 0xC9
-#define I2O_EXEC_IOP_RESET 0xBD
-#define I2O_EXEC_LCT_NOTIFY 0xA2
-#define I2O_EXEC_OUTBOUND_INIT 0xA1
-#define I2O_EXEC_PATH_ENABLE 0xD3
-#define I2O_EXEC_PATH_QUIESCE 0xC5
-#define I2O_EXEC_PATH_RESET 0xD7
-#define I2O_EXEC_STATIC_MF_CREATE 0xDD
-#define I2O_EXEC_STATIC_MF_RELEASE 0xDF
-#define I2O_EXEC_STATUS_GET 0xA0
-#define I2O_EXEC_SW_DOWNLOAD 0xA9
-#define I2O_EXEC_SW_UPLOAD 0xAB
-#define I2O_EXEC_SW_REMOVE 0xAD
-#define I2O_EXEC_SYS_ENABLE 0xD1
-#define I2O_EXEC_SYS_MODIFY 0xC1
-#define I2O_EXEC_SYS_QUIESCE 0xC3
-#define I2O_EXEC_SYS_TAB_SET 0xA3
-
- /* Init Outbound Q status */
-#define I2O_EXEC_OUTBOUND_INIT_IN_PROGRESS 0x01
-#define I2O_EXEC_OUTBOUND_INIT_REJECTED 0x02
-#define I2O_EXEC_OUTBOUND_INIT_FAILED 0x03
-#define I2O_EXEC_OUTBOUND_INIT_COMPLETE 0x04
-
-#define I2O_UTIL_NOP 0x00
-
-/* I2O Get Status State values */
-
-#define I2O_IOP_STATE_INITIALIZING 0x01
-#define I2O_IOP_STATE_RESET 0x02
-#define I2O_IOP_STATE_HOLD 0x04
-#define I2O_IOP_STATE_READY 0x05
-#define I2O_IOP_STATE_OPERATIONAL 0x08
-#define I2O_IOP_STATE_FAILED 0x10
-#define I2O_IOP_STATE_FAULTED 0x11
-
-/* Defines for Request Status Codes: Table 3-1 Reply Status Codes. */
-
-#define I2O_REPLY_STATUS_SUCCESS 0x00
-#define I2O_REPLY_STATUS_ABORT_DIRTY 0x01
-#define I2O_REPLY_STATUS_ABORT_NO_DATA_TRANSFER 0x02
-#define I2O_REPLY_STATUS_ABORT_PARTIAL_TRANSFER 0x03
-#define I2O_REPLY_STATUS_ERROR_DIRTY 0x04
-#define I2O_REPLY_STATUS_ERROR_NO_DATA_TRANSFER 0x05
-#define I2O_REPLY_STATUS_ERROR_PARTIAL_TRANSFER 0x06
-#define I2O_REPLY_STATUS_PROCESS_ABORT_DIRTY 0x07
-#define I2O_REPLY_STATUS_PROCESS_ABORT_NO_DATA_TRANSFER 0x08
-#define I2O_REPLY_STATUS_PROCESS_ABORT_PARTIAL_TRANSFER 0x09
-#define I2O_REPLY_STATUS_TRANSACTION_ERROR 0x0A
-#define I2O_REPLY_STATUS_PROGRESS_REPORT 0x80
-
-/* DetailedStatusCode defines for ALL messages: Table 3-2 Detailed Status Codes.*/
-
-#define I2O_DETAIL_STATUS_SUCCESS 0x0000
-#define I2O_DETAIL_STATUS_BAD_KEY 0x0001
-#define I2O_DETAIL_STATUS_CHAIN_BUFFER_TOO_LARGE 0x0002
-#define I2O_DETAIL_STATUS_DEVICE_BUSY 0x0003
-#define I2O_DETAIL_STATUS_DEVICE_LOCKED 0x0004
-#define I2O_DETAIL_STATUS_DEVICE_NOT_AVAILABLE 0x0005
-#define I2O_DETAIL_STATUS_DEVICE_RESET 0x0006
-#define I2O_DETAIL_STATUS_INAPPROPRIATE_FUNCTION 0x0007
-#define I2O_DETAIL_STATUS_INSUFFICIENT_RESOURCE_HARD 0x0008
-#define I2O_DETAIL_STATUS_INSUFFICIENT_RESOURCE_SOFT 0x0009
-#define I2O_DETAIL_STATUS_INVALID_INITIATOR_ADDRESS 0x000A
-#define I2O_DETAIL_STATUS_INVALID_MESSAGE_FLAGS 0x000B
-#define I2O_DETAIL_STATUS_INVALID_OFFSET 0x000C
-#define I2O_DETAIL_STATUS_INVALID_PARAMETER 0x000D
-#define I2O_DETAIL_STATUS_INVALID_REQUEST 0x000E
-#define I2O_DETAIL_STATUS_INVALID_TARGET_ADDRESS 0x000F
-#define I2O_DETAIL_STATUS_MESSAGE_TOO_LARGE 0x0010
-#define I2O_DETAIL_STATUS_MESSAGE_TOO_SMALL 0x0011
-#define I2O_DETAIL_STATUS_MISSING_PARAMETER 0x0012
-#define I2O_DETAIL_STATUS_NO_SUCH_PAGE 0x0013
-#define I2O_DETAIL_STATUS_REPLY_BUFFER_FULL 0x0014
-#define I2O_DETAIL_STATUS_TCL_ERROR 0x0015
-#define I2O_DETAIL_STATUS_TIMEOUT 0x0016
-#define I2O_DETAIL_STATUS_UNKNOWN_ERROR 0x0017
-#define I2O_DETAIL_STATUS_UNKNOWN_FUNCTION 0x0018
-#define I2O_DETAIL_STATUS_UNSUPPORTED_FUNCTION 0x0019
-#define I2O_DETAIL_STATUS_UNSUPPORTED_VERSION 0x001A
-
- /* I2O msg header defines for VersionOffset */
-#define I2OMSGVER_1_5 0x0001
-#define SGL_OFFSET_0 I2OMSGVER_1_5
-#define SGL_OFFSET_4 (0x0040 | I2OMSGVER_1_5)
-#define TRL_OFFSET_5 (0x0050 | I2OMSGVER_1_5)
-#define TRL_OFFSET_6 (0x0060 | I2OMSGVER_1_5)
-
- /* I2O msg header defines for MsgFlags */
-#define MSG_STATIC 0x0100
-#define MSG_64BIT_CNTXT 0x0200
-#define MSG_MULTI_TRANS 0x1000
-#define MSG_FAIL 0x2000
-#define MSG_LAST 0x4000
-#define MSG_REPLY 0x8000
-
- /* normal LAN request message MsgFlags and VersionOffset (0x1041) */
-#define LAN_MSG_REQST (MSG_MULTI_TRANS | SGL_OFFSET_4)
-
- /* minimum size msg */
-#define THREE_WORD_MSG_SIZE 0x00030000
-#define FOUR_WORD_MSG_SIZE 0x00040000
-#define FIVE_WORD_MSG_SIZE 0x00050000
-#define SIX_WORD_MSG_SIZE 0x00060000
-#define SEVEN_WORD_MSG_SIZE 0x00070000
-#define EIGHT_WORD_MSG_SIZE 0x00080000
-#define NINE_WORD_MSG_SIZE 0x00090000
-
-/* Special TID Assignments */
-
-#define I2O_IOP_TID 0
-#define I2O_HOST_TID 0xB91
-
- /* RedCreek I2O private message codes */
-#define RC_PRIVATE_GET_MAC_ADDR 0x0001/**/ /* OBSOLETE */
-#define RC_PRIVATE_SET_MAC_ADDR 0x0002
-#define RC_PRIVATE_GET_NIC_STATS 0x0003
-#define RC_PRIVATE_GET_LINK_STATUS 0x0004
-#define RC_PRIVATE_SET_LINK_SPEED 0x0005
-#define RC_PRIVATE_SET_IP_AND_MASK 0x0006
-/* #define RC_PRIVATE_GET_IP_AND_MASK 0x0007 *//* OBSOLETE */
-#define RC_PRIVATE_GET_LINK_SPEED 0x0008
-#define RC_PRIVATE_GET_FIRMWARE_REV 0x0009
-/* #define RC_PRIVATE_GET_MAC_ADDR 0x000A */
-#define RC_PRIVATE_GET_IP_AND_MASK 0x000B
-#define RC_PRIVATE_DEBUG_MSG 0x000C
-#define RC_PRIVATE_REPORT_DRIVER_CAPABILITY 0x000D
-#define RC_PRIVATE_SET_PROMISCUOUS_MODE 0x000e
-#define RC_PRIVATE_GET_PROMISCUOUS_MODE 0x000f
-#define RC_PRIVATE_SET_BROADCAST_MODE 0x0010
-#define RC_PRIVATE_GET_BROADCAST_MODE 0x0011
-
-#define RC_PRIVATE_REBOOT 0x00FF
-
-/* I2O message header */
-typedef struct _I2O_MESSAGE_FRAME {
- U8 VersionOffset;
- U8 MsgFlags;
- U16 MessageSize;
- BF TargetAddress:I2O_TID_SZ;
- BF InitiatorAddress:I2O_TID_SZ;
- BF Function:I2O_FUNCTION_SZ;
- U32 InitiatorContext;
- /* SGL[] */
-} I2O_MESSAGE_FRAME, *PI2O_MESSAGE_FRAME;
-
- /* assumed a 16K minus 256 byte space for outbound queue message frames */
-#define MSG_FRAME_SIZE 512
-#define NMBR_MSG_FRAMES 30
-
- /*
- ** in reserved space right after PAB in host memory is area for returning
- ** values from card
- */
-
-/*
-** typedef NICSTAT
-**
-** Data structure for NIC statistics retruned from PCI card. Data copied from
-** here to user allocated RCLINKSTATS (see rclanmtl.h) structure.
-*/
-typedef struct tag_NicStat {
- unsigned long TX_good;
- unsigned long TX_maxcol;
- unsigned long TX_latecol;
- unsigned long TX_urun;
- unsigned long TX_crs; /* lost carrier sense */
- unsigned long TX_def; /* transmit deferred */
- unsigned long TX_singlecol; /* single collisions */
- unsigned long TX_multcol;
- unsigned long TX_totcol;
- unsigned long Rcv_good;
- unsigned long Rcv_CRCerr;
- unsigned long Rcv_alignerr;
- unsigned long Rcv_reserr; /* rnr'd pkts */
- unsigned long Rcv_orun;
- unsigned long Rcv_cdt;
- unsigned long Rcv_runt;
- unsigned long dump_status; /* last field directly from the chip */
-} NICSTAT, *P_NICSTAT;
-
-#define DUMP_DONE 0x0000A005 /* completed statistical dump */
-#define DUMP_CLEAR 0x0000A007 /* completed stat dump and clear counters */
-
-static volatile int msgFlag;
-
-/* local function prototypes */
-static void ProcessOutboundI2OMsg (PPAB pPab, U32 phyMsgAddr);
-static int FillI2OMsgSGLFromTCB (PU32 pMsg, PRCTCB pXmitCntrlBlock);
-static int GetI2OStatus (PPAB pPab);
-static int SendI2OOutboundQInitMsg (PPAB pPab);
-static int SendEnableSysMsg (PPAB pPab);
-
-/*
-** =========================================================================
-** RCInitI2OMsgLayer()
-**
-** Initialize the RedCreek I2O Module and adapter.
-**
-** Inputs: dev - the devices net_device struct
-** TransmitCallbackFunction - address of transmit callback function
-** ReceiveCallbackFunction - address of receive callback function
-**
-** private message block is allocated by user. It must be in locked pages.
-** p_msgbuf and p_phymsgbuf point to the same location. Must be contigous
-** memory block of a minimum of 16K byte and long word aligned.
-** =========================================================================
-*/
-RC_RETURN
-RCInitI2OMsgLayer (struct net_device *dev,
- PFNTXCALLBACK TransmitCallbackFunction,
- PFNRXCALLBACK ReceiveCallbackFunction,
- PFNCALLBACK RebootCallbackFunction)
-{
- int result;
- PPAB pPab;
- U32 pciBaseAddr = dev->base_addr;
- PDPA pDpa = dev->priv;
- PU8 p_msgbuf = pDpa->msgbuf;
- PU8 p_phymsgbuf = (PU8) pDpa->msgbuf_dma;
-
- dprintk
- ("InitI2O: Adapter:0x%04ux ATU:0x%08ulx msgbuf:%p phymsgbuf:0x%08ulx\n"
- "TransmitCallbackFunction:0x%08ulx ReceiveCallbackFunction:0x%08ulx\n",
- pDpa->id, pciBaseAddr, p_msgbuf, (u32) p_phymsgbuf,
- (u32) TransmitCallbackFunction, (u32) ReceiveCallbackFunction);
-
- /* Check if this interface already initialized - if so, shut it down */
- if (pDpa->pPab != NULL) {
- printk (KERN_WARNING
- "(rcpci45 driver:) pDpa->pPab [%d] != NULL\n",
- pDpa->id);
-/* RCResetLANCard(pDpa->id, 0, (PU32)NULL, (PFNCALLBACK)NULL); */
- pDpa->pPab = NULL;
- }
-
- /* store adapter instance values in adapter block.
- * Adapter block is at beginning of message buffer */
-
- pPab = kmalloc (sizeof (*pPab), GFP_KERNEL);
- if (!pPab) {
- printk (KERN_ERR
- "(rcpci45 driver:) RCInitI2OMsgLayer: Could not allocate memory for PAB struct!\n");
- result = RC_RTN_MALLOC_ERROR;
- goto err_out;
- }
-
- memset (pPab, 0, sizeof (*pPab));
- pDpa->pPab = pPab;
- pPab->p_atu = (PATU) pciBaseAddr;
- pPab->pPci45LinBaseAddr = (PU8) pciBaseAddr;
-
- /* Set outbound message frame addr */
- pPab->outMsgBlockPhyAddr = (U32) p_phymsgbuf;
- pPab->pLinOutMsgBlock = (PU8) p_msgbuf;
-
- /* store callback function addresses */
- pPab->pTransCallbackFunc = TransmitCallbackFunction;
- pPab->pRecvCallbackFunc = ReceiveCallbackFunction;
- pPab->pRebootCallbackFunc = RebootCallbackFunction;
- pPab->pCallbackFunc = (PFNCALLBACK) NULL;
-
- /*
- ** Initialize I2O IOP
- */
- result = GetI2OStatus (pPab);
-
- if (result != RC_RTN_NO_ERROR)
- goto err_out_dealloc;
-
- if (pPab->IOPState == I2O_IOP_STATE_OPERATIONAL) {
- printk (KERN_INFO
- "(rcpci45 driver:) pPab->IOPState == op: resetting adapter\n");
- RCResetLANCard (dev, 0, (PU32) NULL, (PFNCALLBACK) NULL);
- }
-
- result = SendI2OOutboundQInitMsg (pPab);
-
- if (result != RC_RTN_NO_ERROR)
- goto err_out_dealloc;
-
- result = SendEnableSysMsg (pPab);
-
- if (result != RC_RTN_NO_ERROR)
- goto err_out_dealloc;
-
- return RC_RTN_NO_ERROR;
-
- err_out_dealloc:
- kfree (pPab);
- err_out:
- return result;
-}
-
-/*
-** =========================================================================
-** Disable and Enable I2O interrupts. I2O interrupts are enabled at Init time
-** but can be disabled and re-enabled through these two function calls.
-** Packets will still be put into any posted received buffers and packets will
-** be sent through RCI2OSendPacket() functions. Disabling I2O interrupts
-** will prevent hardware interrupt to host even though the outbound I2O msg
-** queue is not emtpy.
-** =========================================================================
-*/
-#define i960_OUT_POST_Q_INT_BIT 0x0008 /* bit set masks interrupts */
-
-RC_RETURN
-RCDisableI2OInterrupts (struct net_device * dev)
-{
- PPAB pPab = ((PDPA) dev->priv)->pPab;
-
- if (pPab == NULL)
- return RC_RTN_ADPTR_NOT_REGISTERED;
-
- pPab->p_atu->OutIntMask |= i960_OUT_POST_Q_INT_BIT;
-
- return RC_RTN_NO_ERROR;
-}
-
-RC_RETURN
-RCEnableI2OInterrupts (struct net_device * dev)
-{
- PPAB pPab = ((PDPA) dev->priv)->pPab;
-
- if (pPab == NULL)
- return RC_RTN_ADPTR_NOT_REGISTERED;
-
- pPab->p_atu->OutIntMask &= ~i960_OUT_POST_Q_INT_BIT;
-
- return RC_RTN_NO_ERROR;
-
-}
-
-/*
-** =========================================================================
-** RCI2OSendPacket()
-** =========================================================================
-*/
-RC_RETURN
-RCI2OSendPacket (struct net_device * dev, U32 InitiatorContext,
- PRCTCB pTransCtrlBlock)
-{
- U32 msgOffset;
- PU32 pMsg;
- int size;
- PPAB pPab = ((PDPA) dev->priv)->pPab;
-
- dprintk ("RCI2OSendPacket()...\n");
-
- if (pPab == NULL)
- return RC_RTN_ADPTR_NOT_REGISTERED;
-
- /* get Inbound free Q entry - reading from In Q gets free Q entry */
- /* offset to Msg Frame in PCI msg block */
-
- msgOffset = pPab->p_atu->InQueue;
-
- if (msgOffset == 0xFFFFFFFF) {
- dprintk ("RCI2OSendPacket(): Inbound Free Q empty!\n");
- return RC_RTN_FREE_Q_EMPTY;
- }
-
- /* calc virtual address of msg - virtual already mapped to physical */
- pMsg = (PU32) (pPab->pPci45LinBaseAddr + msgOffset);
-
- size = FillI2OMsgSGLFromTCB (pMsg + 4, pTransCtrlBlock);
-
- if (size == -1) { /* error processing TCB - send NOP msg */
- dprintk ("RCI2OSendPacket(): Error Rrocess TCB!\n");
- pMsg[0] = THREE_WORD_MSG_SIZE | SGL_OFFSET_0;
- pMsg[1] =
- I2O_UTIL_NOP << 24 | I2O_HOST_TID << 12 | RC_LAN_TARGET_ID;
- return RC_RTN_TCB_ERROR;
- } else { /* send over msg header */
-
- pMsg[0] = (size + 4) << 16 | LAN_MSG_REQST; /* send over message size and flags */
- pMsg[1] =
- I2O_LAN_PACKET_SEND << 24 | I2O_HOST_TID << 12 |
- RC_LAN_TARGET_ID;
- pMsg[2] = InitiatorContext;
- pMsg[3] = 0; /* batch reply */
- /* post to Inbound Post Q */
- pPab->p_atu->InQueue = msgOffset;
- return RC_RTN_NO_ERROR;
- }
-}
-
-/*
-** =========================================================================
-** RCI2OPostRecvBuffer()
-**
-** inputs: pBufrCntrlBlock - pointer to buffer control block
-**
-** returns TRUE if successful in sending message, else FALSE.
-** =========================================================================
-*/
-RC_RETURN
-RCPostRecvBuffers (struct net_device * dev, PRCTCB pTransCtrlBlock)
-{
- U32 msgOffset;
- PU32 pMsg;
- int size;
- PPAB pPab = ((PDPA) dev->priv)->pPab;
-
- dprintk ("RCPostRecvBuffers()...\n");
-
- /* search for DeviceHandle */
-
- if (pPab == NULL)
- return RC_RTN_ADPTR_NOT_REGISTERED;
-
- /* get Inbound free Q entry - reading from In Q gets free Q entry */
- /* offset to Msg Frame in PCI msg block */
- msgOffset = pPab->p_atu->InQueue;
-
- if (msgOffset == 0xFFFFFFFF) {
- dprintk ("RCPostRecvBuffers(): Inbound Free Q empty!\n");
- return RC_RTN_FREE_Q_EMPTY;
- }
- /* calc virtual address of msg - virtual already mapped to physical */
- pMsg = (PU32) (pPab->pPci45LinBaseAddr + msgOffset);
-
- size = FillI2OMsgSGLFromTCB (pMsg + 4, pTransCtrlBlock);
-
- if (size == -1) { /* error prcessing TCB - send 3 DWORD private msg == NOP */
- dprintk
- ("RCPostRecvBuffers(): Error Processing TCB! size = %d\n",
- size);
- pMsg[0] = THREE_WORD_MSG_SIZE | SGL_OFFSET_0;
- pMsg[1] =
- I2O_UTIL_NOP << 24 | I2O_HOST_TID << 12 | RC_LAN_TARGET_ID;
- /* post to Post Q */
- pPab->p_atu->InQueue = msgOffset;
- return RC_RTN_TCB_ERROR;
- } else { /* send over size msg header */
-
- pMsg[0] = (size + 4) << 16 | LAN_MSG_REQST; /* send over message size and flags */
- pMsg[1] =
- I2O_LAN_RECEIVE_POST << 24 | I2O_HOST_TID << 12 |
- RC_LAN_TARGET_ID;
- pMsg[2] = DEFAULT_RECV_INIT_CONTEXT;
- pMsg[3] = *(PU32) pTransCtrlBlock; /* number of packet buffers */
- /* post to Post Q */
- pPab->p_atu->InQueue = msgOffset;
- return RC_RTN_NO_ERROR;
- }
-}
-
-/*
-** =========================================================================
-** RCProcI2OMsgQ()
-**
-** Process I2O outbound message queue until empty.
-** =========================================================================
-*/
-irqreturn_t
-RCProcI2OMsgQ (struct net_device *dev)
-{
- U32 phyAddrMsg;
- PU8 p8Msg;
- PU32 p32;
- U16 count;
- PPAB pPab = ((PDPA) dev->priv)->pPab;
- unsigned char debug_msg[20];
-
- if (pPab == NULL)
- return IRQ_NONE;
-
- phyAddrMsg = pPab->p_atu->OutQueue;
-
- while (phyAddrMsg != 0xFFFFFFFF) {
- p8Msg =
- pPab->pLinOutMsgBlock + (phyAddrMsg -
- pPab->outMsgBlockPhyAddr);
- p32 = (PU32) p8Msg;
-
- dprintk ("msg: 0x%x 0x%x \n", p8Msg[7], p32[5]);
-
- /* Send Packet Reply Msg */
- if (I2O_LAN_PACKET_SEND == p8Msg[7]) { /* function code byte */
- count = *(PU16) (p8Msg + 2);
- count -= p8Msg[0] >> 4;
- /* status, count, context[], adapter */
- (*pPab->pTransCallbackFunc) (p8Msg[19], count, p32 + 5,
- dev);
- } else if (I2O_LAN_RECEIVE_POST == p8Msg[7]) { /* Receive Packet Reply Msg */
- dprintk
- ("I2O_RECV_REPLY pPab:0x%08ulx p8Msg:0x%08ulx p32:0x%08ulx\n",
- (u32) pPab, (u32) p8Msg, (u32) p32);
- dprintk ("msg: 0x%08ulx:0x%08ulx:0x%08ulx:0x%08ulx\n",
- p32[0], p32[1], p32[2], p32[3]);
- dprintk (" 0x%08ulx:0x%08ulx:0x%08ulx:0x%08ulx\n",
- p32[4], p32[5], p32[6], p32[7]);
- dprintk (" 0x%08ulx:0X%08ulx:0x%08ulx:0x%08ulx\n",
- p32[8], p32[9], p32[10], p32[11]);
- /* status, count, buckets remaining, packetParmBlock, adapter */
- (*pPab->pRecvCallbackFunc) (p8Msg[19], p8Msg[12],
- p32[5], p32 + 6, dev);
- } else if (I2O_LAN_RESET == p8Msg[7]
- || I2O_LAN_SHUTDOWN == p8Msg[7])
- if (pPab->pCallbackFunc)
- (*pPab->pCallbackFunc) (p8Msg[19], 0, 0, dev);
- else
- pPab->pCallbackFunc = (PFNCALLBACK) 1;
- else if (I2O_PRIVATE == p8Msg[7]) {
- dprintk ("i2o private 0x%x, 0x%x \n", p8Msg[7], p32[5]);
- switch (p32[5]) {
- case RC_PRIVATE_DEBUG_MSG:
- msgFlag = 1;
- dprintk ("Received I2O_PRIVATE msg\n");
- debug_msg[15] = (p32[6] & 0xff000000) >> 24;
- debug_msg[14] = (p32[6] & 0x00ff0000) >> 16;
- debug_msg[13] = (p32[6] & 0x0000ff00) >> 8;
- debug_msg[12] = (p32[6] & 0x000000ff);
-
- debug_msg[11] = (p32[7] & 0xff000000) >> 24;
- debug_msg[10] = (p32[7] & 0x00ff0000) >> 16;
- debug_msg[9] = (p32[7] & 0x0000ff00) >> 8;
- debug_msg[8] = (p32[7] & 0x000000ff);
-
- debug_msg[7] = (p32[8] & 0xff000000) >> 24;
- debug_msg[6] = (p32[8] & 0x00ff0000) >> 16;
- debug_msg[5] = (p32[8] & 0x0000ff00) >> 8;
- debug_msg[4] = (p32[8] & 0x000000ff);
-
- debug_msg[3] = (p32[9] & 0xff000000) >> 24;
- debug_msg[2] = (p32[9] & 0x00ff0000) >> 16;
- debug_msg[1] = (p32[9] & 0x0000ff00) >> 8;
- debug_msg[0] = (p32[9] & 0x000000ff);
-
- debug_msg[16] = '\0';
- dprintk ("%s", debug_msg);
- break;
- case RC_PRIVATE_REBOOT:
- dprintk ("Adapter reboot initiated...\n");
- if (pPab->pRebootCallbackFunc)
- (*pPab->pRebootCallbackFunc) (0, 0, 0,
- dev);
- break;
- default:
- printk (KERN_WARNING
- "(rcpci45 driver:) Unknown private I2O msg received: 0x%x\n",
- p32[5]);
- break;
- }
- }
-
- /*
- ** Process other Msg's
- */
- else
- ProcessOutboundI2OMsg (pPab, phyAddrMsg);
-
- /* return MFA to outbound free Q */
- pPab->p_atu->OutQueue = phyAddrMsg;
-
- /* any more msgs? */
- phyAddrMsg = pPab->p_atu->OutQueue;
- }
-
- return IRQ_HANDLED;
-}
-
-/*
-** =========================================================================
-** Returns LAN interface statistical counters to space provided by caller at
-** StatsReturnAddr. Returns 0 if success, else RC_RETURN code.
-** This function will call the WaitCallback function provided by
-** user while waiting for card to respond.
-** =========================================================================
-*/
-RC_RETURN
-RCGetLinkStatistics (struct net_device *dev,
- P_RCLINKSTATS StatsReturnAddr,
- PFNWAITCALLBACK WaitCallback)
-{
- U32 msgOffset;
- volatile U32 timeout;
- volatile PU32 pMsg;
- volatile PU32 p32, pReturnAddr;
- P_NICSTAT pStats;
- int i;
- PPAB pPab = ((PDPA) dev->priv)->pPab;
-
-/*dprintk("Get82558Stats() StatsReturnAddr:0x%08ulx\n", StatsReturnAddr); */
-
- if (pPab == NULL)
- return RC_RTN_ADPTR_NOT_REGISTERED;
-
- msgOffset = pPab->p_atu->InQueue;
-
- if (msgOffset == 0xFFFFFFFF) {
- dprintk ("Get8255XStats(): Inbound Free Q empty!\n");
- return RC_RTN_FREE_Q_EMPTY;
- }
-
- /* calc virtual address of msg - virtual already mapped to physical */
- pMsg = (PU32) (pPab->pPci45LinBaseAddr + msgOffset);
-
-/*dprintk("Get82558Stats - pMsg = 0x%08ulx, InQ msgOffset = 0x%08ulx\n", pMsg, msgOffset);*/
-/*dprintk("Get82558Stats - pMsg = 0x%08X, InQ msgOffset = 0x%08X\n", pMsg, msgOffset);*/
-
- pMsg[0] = SIX_WORD_MSG_SIZE | SGL_OFFSET_0;
- pMsg[1] = I2O_PRIVATE << 24 | I2O_HOST_TID << 12 | RC_LAN_TARGET_ID;
- pMsg[2] = DEFAULT_RECV_INIT_CONTEXT;
- pMsg[3] = 0x112; /* transaction context */
- pMsg[4] = RC_PCI45_VENDOR_ID << 16 | RC_PRIVATE_GET_NIC_STATS;
- pMsg[5] = pPab->outMsgBlockPhyAddr;
-
- p32 = (PU32) pPab->outMsgBlockPhyAddr;
- pStats = (P_NICSTAT) pPab->pLinOutMsgBlock;
- pStats->dump_status = 0xFFFFFFFF;
-
- /* post to Inbound Post Q */
- pPab->p_atu->InQueue = msgOffset;
-
- timeout = 100000;
- while (1) {
- if (WaitCallback)
- (*WaitCallback) ();
-
- udelay (10);
-
- if (pStats->dump_status != 0xFFFFFFFF)
- break;
-
- if (!timeout--) {
- dprintk
- ("RCGet82558Stats() Timeout waiting for NIC statistics\n");
- return RC_RTN_MSG_REPLY_TIMEOUT;
- }
- }
-
- pReturnAddr = (PU32) StatsReturnAddr;
-
- /* copy Nic stats to user's structure */
- for (i = 0; i < (int) sizeof (RCLINKSTATS) / 4; i++)
- pReturnAddr[i] = p32[i];
-
- return RC_RTN_NO_ERROR;
-}
-
-/*
-** =========================================================================
-** Get82558LinkStatus()
-** =========================================================================
-*/
-RC_RETURN
-RCGetLinkStatus (struct net_device * dev, PU32 ReturnAddr,
- PFNWAITCALLBACK WaitCallback)
-{
- U32 msgOffset;
- volatile U32 timeout;
- volatile PU32 pMsg;
- volatile PU32 p32;
- PPAB pPab = ((PDPA) dev->priv)->pPab;
-
- dprintk ("Get82558LinkStatus() ReturnPhysAddr:0x%08ulx\n",
- (u32) ReturnAddr);
-
- if (pPab == NULL)
- return RC_RTN_ADPTR_NOT_REGISTERED;
-
- msgOffset = pPab->p_atu->InQueue;
-
- if (msgOffset == 0xFFFFFFFF) {
- dprintk ("Get82558LinkStatus(): Inbound Free Q empty!\n");
- return RC_RTN_FREE_Q_EMPTY;
- }
-
- /* calc virtual address of msg - virtual already mapped to physical */
- pMsg = (PU32) (pPab->pPci45LinBaseAddr + msgOffset);
-/*dprintk("Get82558LinkStatus - pMsg = 0x%08ulx, InQ msgOffset = 0x%08ulx\n", pMsg, msgOffset);*/
-/*dprintk("Get82558LinkStatus - pMsg = 0x%08X, InQ msgOffset = 0x%08X\n", pMsg, msgOffset);*/
-
- pMsg[0] = SIX_WORD_MSG_SIZE | SGL_OFFSET_0;
- pMsg[1] = I2O_PRIVATE << 24 | I2O_HOST_TID << 12 | RC_LAN_TARGET_ID;
- pMsg[2] = DEFAULT_RECV_INIT_CONTEXT;
- pMsg[3] = 0x112; /* transaction context */
- pMsg[4] = RC_PCI45_VENDOR_ID << 16 | RC_PRIVATE_GET_LINK_STATUS;
- pMsg[5] = pPab->outMsgBlockPhyAddr;
-
- p32 = (PU32) pPab->pLinOutMsgBlock;
- *p32 = 0xFFFFFFFF;
-
- /* post to Inbound Post Q */
- pPab->p_atu->InQueue = msgOffset;
-
- timeout = 100000;
- while (1) {
- if (WaitCallback)
- (*WaitCallback) ();
-
- udelay (10);
-
- if (*p32 != 0xFFFFFFFF)
- break;
-
- if (!timeout--) {
- dprintk ("Timeout waiting for link status\n");
- return RC_RTN_MSG_REPLY_TIMEOUT;
- }
- }
-
- *ReturnAddr = *p32; /* 1 = up 0 = down */
-
- return RC_RTN_NO_ERROR;
-
-}
-
-/*
-** =========================================================================
-** RCGetMAC()
-**
-** get the MAC address the adapter is listening for in non-promiscous mode.
-** MAC address is in media format.
-** =========================================================================
-*/
-RC_RETURN
-RCGetMAC (struct net_device * dev, PFNWAITCALLBACK WaitCallback)
-{
- unsigned timeout;
- U32 off;
- PU8 mac = dev->dev_addr;
- PU32 p;
- U32 temp[2];
- PPAB pPab = ((PDPA) dev->priv)->pPab;
- PATU p_atu;
-
- if (pPab == NULL)
- return RC_RTN_ADPTR_NOT_REGISTERED;
-
- p_atu = pPab->p_atu;
-
- p_atu->EtherMacLow = 0; /* first zero return data */
- p_atu->EtherMacHi = 0;
-
- off = p_atu->InQueue; /* get addresss of message */
-
- if (0xFFFFFFFF == off)
- return RC_RTN_FREE_Q_EMPTY;
-
- p = (PU32) (pPab->pPci45LinBaseAddr + off);
-
- dprintk ("RCGetMAC: p_atu 0x%08x, off 0x%08x, p 0x%08x\n",
- (uint) p_atu, (uint) off, (uint) p);
- /* setup private message */
- p[0] = FIVE_WORD_MSG_SIZE | SGL_OFFSET_0;
- p[1] = I2O_PRIVATE << 24 | I2O_HOST_TID << 12 | RC_LAN_TARGET_ID;
- p[2] = 0; /* initiator context */
- p[3] = 0x218; /* transaction context */
- p[4] = RC_PCI45_VENDOR_ID << 16 | RC_PRIVATE_GET_MAC_ADDR;
-
- p_atu->InQueue = off; /* send it to the I2O device */
- dprintk ("RCGetMAC: p_atu 0x%08x, off 0x%08x, p 0x%08x\n",
- (uint) p_atu, (uint) off, (uint) p);
-
- /* wait for the rcpci45 board to update the info */
- timeout = 1000000;
- while (0 == p_atu->EtherMacLow) {
- if (WaitCallback)
- (*WaitCallback) ();
-
- udelay (10);
-
- if (!timeout--) {
- printk ("rc_getmac: Timeout\n");
- return RC_RTN_MSG_REPLY_TIMEOUT;
- }
- }
-
- /* read the mac address */
- temp[0] = p_atu->EtherMacLow;
- temp[1] = p_atu->EtherMacHi;
- memcpy ((char *) mac, (char *) temp, 6);
-
- dprintk ("rc_getmac: 0x%x\n", (u32) mac);
-
- return RC_RTN_NO_ERROR;
-}
-
-/*
-** =========================================================================
-** RCSetMAC()
-**
-** set MAC address the adapter is listening for in non-promiscous mode.
-** MAC address is in media format.
-** =========================================================================
-*/
-RC_RETURN
-RCSetMAC (struct net_device * dev, PU8 mac)
-{
- U32 off;
- PU32 pMsg;
- PPAB pPab = ((PDPA) dev->priv)->pPab;
-
- if (pPab == NULL)
- return RC_RTN_ADPTR_NOT_REGISTERED;
-
- off = pPab->p_atu->InQueue; /* get addresss of message */
-
- if (0xFFFFFFFF == off)
- return RC_RTN_FREE_Q_EMPTY;
-
- pMsg = (PU32) (pPab->pPci45LinBaseAddr + off);
-
- /* setup private message */
- pMsg[0] = SEVEN_WORD_MSG_SIZE | SGL_OFFSET_0;
- pMsg[1] = I2O_PRIVATE << 24 | I2O_HOST_TID << 12 | RC_LAN_TARGET_ID;
- pMsg[2] = 0; /* initiator context */
- pMsg[3] = 0x219; /* transaction context */
- pMsg[4] = RC_PCI45_VENDOR_ID << 16 | RC_PRIVATE_SET_MAC_ADDR;
- pMsg[5] = *(unsigned *) mac; /* first four bytes */
- pMsg[6] = *(unsigned *) (mac + 4); /* last two bytes */
-
- pPab->p_atu->InQueue = off; /* send it to the I2O device */
-
- return RC_RTN_NO_ERROR;
-}
-
-/*
-** =========================================================================
-** RCSetLinkSpeed()
-**
-** set ethernet link speed.
-** input: speedControl - determines action to take as follows
-** 0 = reset and auto-negotiate (NWay)
-** 1 = Full Duplex 100BaseT
-** 2 = Half duplex 100BaseT
-** 3 = Full Duplex 10BaseT
-** 4 = Half duplex 10BaseT
-** all other values are ignore (do nothing)
-** =========================================================================
-*/
-RC_RETURN
-RCSetLinkSpeed (struct net_device * dev, U16 LinkSpeedCode)
-{
- U32 off;
- PU32 pMsg;
- PPAB pPab = ((PDPA) dev->priv)->pPab;
-
- if (pPab == NULL)
- return RC_RTN_ADPTR_NOT_REGISTERED;
-
- off = pPab->p_atu->InQueue; /* get addresss of message */
-
- if (0xFFFFFFFF == off)
- return RC_RTN_FREE_Q_EMPTY;
-
- pMsg = (PU32) (pPab->pPci45LinBaseAddr + off);
-
- /* setup private message */
- pMsg[0] = SIX_WORD_MSG_SIZE | SGL_OFFSET_0;
- pMsg[1] = I2O_PRIVATE << 24 | I2O_HOST_TID << 12 | RC_LAN_TARGET_ID;
- pMsg[2] = 0; /* initiator context */
- pMsg[3] = 0x219; /* transaction context */
- pMsg[4] = RC_PCI45_VENDOR_ID << 16 | RC_PRIVATE_SET_LINK_SPEED;
- pMsg[5] = LinkSpeedCode; /* link speed code */
-
- pPab->p_atu->InQueue = off; /* send it to the I2O device */
-
- return RC_RTN_NO_ERROR;
-}
-
-/*
-** =========================================================================
-** RCSetPromiscuousMode()
-**
-** Defined values for Mode:
-** 0 - turn off promiscuous mode
-** 1 - turn on promiscuous mode
-**
-** =========================================================================
-*/
-RC_RETURN
-RCSetPromiscuousMode (struct net_device * dev, U16 Mode)
-{
- U32 off;
- PU32 pMsg;
- PPAB pPab = ((PDPA) dev->priv)->pPab;
-
- if (pPab == NULL)
- return RC_RTN_ADPTR_NOT_REGISTERED;
-
- off = pPab->p_atu->InQueue; /* get addresss of message */
-
- if (0xFFFFFFFF == off)
- return RC_RTN_FREE_Q_EMPTY;
-
- pMsg = (PU32) (pPab->pPci45LinBaseAddr + off);
-
- /* setup private message */
- pMsg[0] = SIX_WORD_MSG_SIZE | SGL_OFFSET_0;
- pMsg[1] = I2O_PRIVATE << 24 | I2O_HOST_TID << 12 | RC_LAN_TARGET_ID;
- pMsg[2] = 0; /* initiator context */
- pMsg[3] = 0x219; /* transaction context */
- pMsg[4] = RC_PCI45_VENDOR_ID << 16 | RC_PRIVATE_SET_PROMISCUOUS_MODE;
- pMsg[5] = Mode; /* promiscuous mode setting */
-
- pPab->p_atu->InQueue = off; /* send it to the device */
-
- return RC_RTN_NO_ERROR;
-}
-
-/*
-** =========================================================================
-** RCGetPromiscuousMode()
-**
-** get promiscuous mode setting
-**
-** Possible return values placed in pMode:
-** 0 = promisuous mode not set
-** 1 = promisuous mode is set
-**
-** =========================================================================
-*/
-RC_RETURN
-RCGetPromiscuousMode (struct net_device * dev, PU32 pMode,
- PFNWAITCALLBACK WaitCallback)
-{
- U32 msgOffset, timeout;
- PU32 pMsg;
- volatile PU32 p32;
- PPAB pPab = ((PDPA) dev->priv)->pPab;
-
- msgOffset = pPab->p_atu->InQueue;
-
- if (msgOffset == 0xFFFFFFFF) {
- printk (KERN_WARNING
- "(rcpci45 driver:) RCGetLinkSpeed(): Inbound Free Q empty!\n");
- return RC_RTN_FREE_Q_EMPTY;
- }
-
- /* calc virtual address of msg - virtual already mapped to physical */
- pMsg = (PU32) (pPab->pPci45LinBaseAddr + msgOffset);
-
- /* virtual pointer to return buffer - clear first two dwords */
- p32 = (volatile PU32) pPab->pLinOutMsgBlock;
- p32[0] = 0xff;
-
- /* setup private message */
- pMsg[0] = SIX_WORD_MSG_SIZE | SGL_OFFSET_0;
- pMsg[1] = I2O_PRIVATE << 24 | I2O_HOST_TID << 12 | RC_LAN_TARGET_ID;
- pMsg[2] = 0; /* initiator context */
- pMsg[3] = 0x219; /* transaction context */
- pMsg[4] = RC_PCI45_VENDOR_ID << 16 | RC_PRIVATE_GET_PROMISCUOUS_MODE;
- /* phys address to return status - area right after PAB */
- pMsg[5] = pPab->outMsgBlockPhyAddr;
-
- /* post to Inbound Post Q */
-
- pPab->p_atu->InQueue = msgOffset;
-
- /* wait for response */
- timeout = 1000000;
- while (1) {
- if (WaitCallback)
- (*WaitCallback) ();
-
- udelay (10); /* please don't hog the bus!!! */
-
- if (p32[0] != 0xff)
- break;
-
- if (!timeout--) {
- dprintk
- ("Timeout waiting for promiscuous mode from adapter\n");
- dprintk ("0x%8x\n", p32[0]);
- return RC_RTN_NO_LINK_SPEED;
- }
- }
-
- /* get mode */
- *pMode = (U8) ((volatile PU8) p32)[0] & 0x0f;
-
- return RC_RTN_NO_ERROR;
-}
-
-/*
-** =========================================================================
-** RCSetBroadcastMode()
-**
-** Defined values for Mode:
-** 0 - turn off promiscuous mode
-** 1 - turn on promiscuous mode
-**
-** =========================================================================
-*/
-RC_RETURN
-RCSetBroadcastMode (struct net_device * dev, U16 Mode)
-{
- U32 off;
- PU32 pMsg;
- PPAB pPab = ((PDPA) dev->priv)->pPab;
-
- if (pPab == NULL)
- return RC_RTN_ADPTR_NOT_REGISTERED;
-
- off = pPab->p_atu->InQueue; /* get addresss of message */
-
- if (0xFFFFFFFF == off)
- return RC_RTN_FREE_Q_EMPTY;
-
- pMsg = (PU32) (pPab->pPci45LinBaseAddr + off);
-
- /* setup private message */
- pMsg[0] = SIX_WORD_MSG_SIZE | SGL_OFFSET_0;
- pMsg[1] = I2O_PRIVATE << 24 | I2O_HOST_TID << 12 | RC_LAN_TARGET_ID;
- pMsg[2] = 0; /* initiator context */
- pMsg[3] = 0x219; /* transaction context */
- pMsg[4] = RC_PCI45_VENDOR_ID << 16 | RC_PRIVATE_SET_BROADCAST_MODE;
- pMsg[5] = Mode; /* promiscuous mode setting */
-
- pPab->p_atu->InQueue = off; /* send it to the device */
-
- return RC_RTN_NO_ERROR;
-}
-
-/*
-** =========================================================================
-** RCGetBroadcastMode()
-**
-** get promiscuous mode setting
-**
-** Possible return values placed in pMode:
-** 0 = promisuous mode not set
-** 1 = promisuous mode is set
-**
-** =========================================================================
-*/
-RC_RETURN
-RCGetBroadcastMode (struct net_device * dev, PU32 pMode,
- PFNWAITCALLBACK WaitCallback)
-{
- U32 msgOffset, timeout;
- PU32 pMsg;
- volatile PU32 p32;
- PPAB pPab = ((PDPA) dev->priv)->pPab;
-
- msgOffset = pPab->p_atu->InQueue;
-
- if (msgOffset == 0xFFFFFFFF) {
- printk (KERN_WARNING
- "(rcpci45 driver:) RCGetLinkSpeed(): Inbound Free Q empty!\n");
- return RC_RTN_FREE_Q_EMPTY;
- }
-
- /* calc virtual address of msg - virtual already mapped to physical */
- pMsg = (PU32) (pPab->pPci45LinBaseAddr + msgOffset);
-
- /* virtual pointer to return buffer - clear first two dwords */
- p32 = (volatile PU32) pPab->pLinOutMsgBlock;
- p32[0] = 0xff;
-
- /* setup private message */
- pMsg[0] = SIX_WORD_MSG_SIZE | SGL_OFFSET_0;
- pMsg[1] = I2O_PRIVATE << 24 | I2O_HOST_TID << 12 | RC_LAN_TARGET_ID;
- pMsg[2] = 0; /* initiator context */
- pMsg[3] = 0x219; /* transaction context */
- pMsg[4] = RC_PCI45_VENDOR_ID << 16 | RC_PRIVATE_GET_BROADCAST_MODE;
- /* phys address to return status - area right after PAB */
- pMsg[5] = pPab->outMsgBlockPhyAddr;
-
- /* post to Inbound Post Q */
-
- pPab->p_atu->InQueue = msgOffset;
-
- /* wait for response */
- timeout = 1000000;
- while (1) {
- if (WaitCallback)
- (*WaitCallback) ();
-
- udelay (10); /* please don't hog the bus!!! */
-
- if (p32[0] != 0xff)
- break;
-
- if (!timeout--) {
- printk (KERN_WARNING
- "(rcpci45 driver:) Timeout waiting for promiscuous mode from adapter\n");
- printk (KERN_WARNING "(rcpci45 driver:) 0x%8x\n",
- p32[0]);
- return RC_RTN_NO_LINK_SPEED;
- }
- }
-
- /* get mode */
- *pMode = (U8) ((volatile PU8) p32)[0] & 0x0f;
-
- return RC_RTN_NO_ERROR;
-}
-
-/*
-** =========================================================================
-** RCGetLinkSpeed()
-**
-** get ethernet link speed.
-**
-** 0 = Unknown
-** 1 = Full Duplex 100BaseT
-** 2 = Half duplex 100BaseT
-** 3 = Full Duplex 10BaseT
-** 4 = Half duplex 10BaseT
-**
-** =========================================================================
-*/
-RC_RETURN
-RCGetLinkSpeed (struct net_device * dev, PU32 pLinkSpeedCode,
- PFNWAITCALLBACK WaitCallback)
-{
- U32 msgOffset, timeout;
- PU32 pMsg;
- volatile PU32 p32;
- U8 IOPLinkSpeed;
- PPAB pPab = ((PDPA) dev->priv)->pPab;
-
- msgOffset = pPab->p_atu->InQueue;
-
- if (msgOffset == 0xFFFFFFFF) {
- printk (KERN_WARNING
- "(rcpci45 driver:) RCGetLinkSpeed(): Inbound Free Q empty!\n");
- return RC_RTN_FREE_Q_EMPTY;
- }
-
- /* calc virtual address of msg - virtual already mapped to physical */
- pMsg = (PU32) (pPab->pPci45LinBaseAddr + msgOffset);
-
- /* virtual pointer to return buffer - clear first two dwords */
- p32 = (volatile PU32) pPab->pLinOutMsgBlock;
- p32[0] = 0xff;
-
- /* setup private message */
- pMsg[0] = SIX_WORD_MSG_SIZE | SGL_OFFSET_0;
- pMsg[1] = I2O_PRIVATE << 24 | I2O_HOST_TID << 12 | RC_LAN_TARGET_ID;
- pMsg[2] = 0; /* initiator context */
- pMsg[3] = 0x219; /* transaction context */
- pMsg[4] = RC_PCI45_VENDOR_ID << 16 | RC_PRIVATE_GET_LINK_SPEED;
- /* phys address to return status - area right after PAB */
- pMsg[5] = pPab->outMsgBlockPhyAddr;
-
- /* post to Inbound Post Q */
-
- pPab->p_atu->InQueue = msgOffset;
-
- /* wait for response */
- timeout = 1000000;
- while (1) {
- if (WaitCallback)
- (*WaitCallback) ();
-
- udelay (10); /* please don't hog the bus!!! */
-
- if (p32[0] != 0xff)
- break;
-
- if (!timeout--) {
- dprintk ("Timeout waiting for link speed from IOP\n");
- dprintk ("0x%8x\n", p32[0]);
- return RC_RTN_NO_LINK_SPEED;
- }
- }
-
- /* get Link speed */
- IOPLinkSpeed = (U8) ((volatile PU8) p32)[0] & 0x0f;
-
- *pLinkSpeedCode = IOPLinkSpeed;
-
- return RC_RTN_NO_ERROR;
-}
-
-/*
-** =========================================================================
-** RCReportDriverCapability(struct net_device *dev, U32 capability)
-**
-** Currently defined bits:
-** WARM_REBOOT_CAPABLE 0x01
-**
-** =========================================================================
-*/
-RC_RETURN
-RCReportDriverCapability (struct net_device * dev, U32 capability)
-{
- U32 off;
- PU32 pMsg;
- PPAB pPab = ((PDPA) dev->priv)->pPab;
-
- if (pPab == NULL)
- return RC_RTN_ADPTR_NOT_REGISTERED;
-
- off = pPab->p_atu->InQueue; /* get addresss of message */
-
- if (0xFFFFFFFF == off)
- return RC_RTN_FREE_Q_EMPTY;
-
- pMsg = (PU32) (pPab->pPci45LinBaseAddr + off);
-
- /* setup private message */
- pMsg[0] = SIX_WORD_MSG_SIZE | SGL_OFFSET_0;
- pMsg[1] = I2O_PRIVATE << 24 | I2O_HOST_TID << 12 | RC_LAN_TARGET_ID;
- pMsg[2] = 0; /* initiator context */
- pMsg[3] = 0x219; /* transaction context */
- pMsg[4] =
- RC_PCI45_VENDOR_ID << 16 | RC_PRIVATE_REPORT_DRIVER_CAPABILITY;
- pMsg[5] = capability;
-
- pPab->p_atu->InQueue = off; /* send it to the I2O device */
-
- return RC_RTN_NO_ERROR;
-}
-
-/*
-** =========================================================================
-** RCGetFirmwareVer()
-**
-** Return firmware version in the form "SoftwareVersion : Bt BootVersion"
-**
-** =========================================================================
-*/
-RC_RETURN
-RCGetFirmwareVer (struct net_device * dev, PU8 pFirmString,
- PFNWAITCALLBACK WaitCallback)
-{
- U32 msgOffset, timeout;
- PU32 pMsg;
- volatile PU32 p32;
- PPAB pPab = ((PDPA) dev->priv)->pPab;
-
- msgOffset = pPab->p_atu->InQueue;
- if (msgOffset == 0xFFFFFFFF) {
- dprintk ("RCGetFirmwareVer(): Inbound Free Q empty!\n");
- return RC_RTN_FREE_Q_EMPTY;
- }
-
- /* calc virtual address of msg - virtual already mapped to physical */
- pMsg = (PU32) (pPab->pPci45LinBaseAddr + msgOffset);
-
- /* virtual pointer to return buffer - clear first two dwords */
- p32 = (volatile PU32) pPab->pLinOutMsgBlock;
- p32[0] = 0xff;
-
- /* setup private message */
- pMsg[0] = SIX_WORD_MSG_SIZE | SGL_OFFSET_0;
- pMsg[1] = I2O_PRIVATE << 24 | I2O_HOST_TID << 12 | RC_LAN_TARGET_ID;
- pMsg[2] = 0; /* initiator context */
- pMsg[3] = 0x219; /* transaction context */
- pMsg[4] = RC_PCI45_VENDOR_ID << 16 | RC_PRIVATE_GET_FIRMWARE_REV;
- /* phys address to return status - area right after PAB */
- pMsg[5] = pPab->outMsgBlockPhyAddr;
-
- /* post to Inbound Post Q */
-
- pPab->p_atu->InQueue = msgOffset;
-
- /* wait for response */
- timeout = 1000000;
- while (1) {
- if (WaitCallback)
- (*WaitCallback) ();
-
- udelay (10); /* please don't hog the bus!!! */
-
- if (p32[0] != 0xff)
- break;
-
- if (!timeout--) {
- dprintk ("Timeout waiting for link speed from IOP\n");
- return RC_RTN_NO_FIRM_VER;
- }
- }
-
- strcpy (pFirmString, (PU8) p32);
- return RC_RTN_NO_ERROR;
-}
-
-/*
-** =========================================================================
-** RCResetLANCard()
-**
-** ResourceFlags indicates whether to return buffer resource explicitly
-** to host or keep and reuse.
-** CallbackFunction (if not NULL) is the function to be called when
-** reset is complete.
-** If CallbackFunction is NULL, ReturnAddr will have a 1 placed in it when
-** reset is done (if not NULL).
-**
-** =========================================================================
-*/
-RC_RETURN
-RCResetLANCard (struct net_device * dev, U16 ResourceFlags, PU32 ReturnAddr,
- PFNCALLBACK CallbackFunction)
-{
- unsigned long off;
- PU32 pMsg;
- PPAB pPab = ((PDPA) dev->priv)->pPab;
- long timeout = 0;
-
- if (pPab == NULL)
- return RC_RTN_ADPTR_NOT_REGISTERED;
-
- off = pPab->p_atu->InQueue; /* get addresss of message */
-
- if (0xFFFFFFFF == off)
- return RC_RTN_FREE_Q_EMPTY;
-
- pPab->pCallbackFunc = CallbackFunction;
-
- pMsg = (PU32) (pPab->pPci45LinBaseAddr + off);
-
- /* setup message */
- pMsg[0] = FOUR_WORD_MSG_SIZE | SGL_OFFSET_0;
- pMsg[1] = I2O_LAN_RESET << 24 | I2O_HOST_TID << 12 | RC_LAN_TARGET_ID;
- pMsg[2] = DEFAULT_RECV_INIT_CONTEXT;
- pMsg[3] = ResourceFlags << 16; /* resource flags */
-
- pPab->p_atu->InQueue = off; /* send it to the I2O device */
-
- if (CallbackFunction == (PFNCALLBACK) NULL) {
- /* call RCProcI2OMsgQ() until something in pPab->pCallbackFunc
- or until timer goes off */
- while (pPab->pCallbackFunc == (PFNCALLBACK) NULL) {
- RCProcI2OMsgQ (dev);
- udelay (1000); /* please don't hog the bus!!! */
- timeout++;
- if (timeout > 10000) {
- break;
- }
- }
- if (ReturnAddr != (PU32) NULL)
- *ReturnAddr = (U32) pPab->pCallbackFunc;
- }
-
- return RC_RTN_NO_ERROR;
-}
-
-/*
-** =========================================================================
-** RCResetIOP()
-**
-** Send StatusGet Msg, wait for results return directly to buffer.
-**
-** =========================================================================
-*/
-RC_RETURN
-RCResetIOP (struct net_device * dev)
-{
- U32 msgOffset, timeout;
- PU32 pMsg;
- PPAB pPab = ((PDPA) dev->priv)->pPab;
- volatile PU32 p32;
-
- msgOffset = pPab->p_atu->InQueue;
-
- if (msgOffset == 0xFFFFFFFF) {
- return RC_RTN_FREE_Q_EMPTY;
- }
-
- /* calc virtual address of msg - virtual already mapped to physical */
- pMsg = (PU32) (pPab->pPci45LinBaseAddr + msgOffset);
-
- pMsg[0] = NINE_WORD_MSG_SIZE | SGL_OFFSET_0;
- pMsg[1] = I2O_EXEC_IOP_RESET << 24 | I2O_HOST_TID << 12 | I2O_IOP_TID;
- pMsg[2] = 0; /* universal context */
- pMsg[3] = 0; /* universal context */
- pMsg[4] = 0; /* universal context */
- pMsg[5] = 0; /* universal context */
- /* phys address to return status - area right after PAB */
- pMsg[6] = pPab->outMsgBlockPhyAddr;
- pMsg[7] = 0;
- pMsg[8] = 1; /* return 1 byte */
-
- /* virtual pointer to return buffer - clear first two dwords */
- p32 = (volatile PU32) pPab->pLinOutMsgBlock;
- p32[0] = 0;
- p32[1] = 0;
-
- /* post to Inbound Post Q */
-
- pPab->p_atu->InQueue = msgOffset;
-
- /* wait for response */
- timeout = 1000000;
- while (1) {
- udelay (10); /* please don't hog the bus!!! */
-
- if (p32[0] || p32[1])
- break;
-
- if (!timeout--) {
- dprintk ("RCResetIOP timeout\n");
- return RC_RTN_MSG_REPLY_TIMEOUT;
- }
- }
- return RC_RTN_NO_ERROR;
-}
-
-/*
-** =========================================================================
-** RCShutdownLANCard()
-**
-** ResourceFlags indicates whether to return buffer resource explicitly
-** to host or keep and reuse.
-** CallbackFunction (if not NULL) is the function to be called when
-** shutdown is complete.
-** If CallbackFunction is NULL, ReturnAddr will have a 1 placed in it when
-** shutdown is done (if not NULL).
-**
-** =========================================================================
-*/
-RC_RETURN
-RCShutdownLANCard (struct net_device * dev, U16 ResourceFlags,
- PU32 ReturnAddr, PFNCALLBACK CallbackFunction)
-{
- volatile PU32 pMsg;
- U32 off;
- PPAB pPab = ((PDPA) dev->priv)->pPab;
- long timeout = 0;
-
- if (pPab == NULL)
- return RC_RTN_ADPTR_NOT_REGISTERED;
-
- off = pPab->p_atu->InQueue; /* get addresss of message */
-
- if (0xFFFFFFFF == off)
- return RC_RTN_FREE_Q_EMPTY;
-
- pPab->pCallbackFunc = CallbackFunction;
-
- pMsg = (PU32) (pPab->pPci45LinBaseAddr + off);
-
- /* setup message */
- pMsg[0] = FOUR_WORD_MSG_SIZE | SGL_OFFSET_0;
- pMsg[1] =
- I2O_LAN_SHUTDOWN << 24 | I2O_HOST_TID << 12 | RC_LAN_TARGET_ID;
- pMsg[2] = DEFAULT_RECV_INIT_CONTEXT;
- pMsg[3] = ResourceFlags << 16; /* resource flags */
-
- pPab->p_atu->InQueue = off; /* send it to the I2O device */
-
- if (CallbackFunction == (PFNCALLBACK) NULL) {
- /* call RCProcI2OMsgQ() until something in pPab->pCallbackFunc
- or until timer goes off */
- while (pPab->pCallbackFunc == (PFNCALLBACK) NULL) {
- RCProcI2OMsgQ (dev);
- udelay (1000); /* please don't hog the bus!!! */
- timeout++;
- if (timeout > 10000) {
- printk (KERN_WARNING
- "(rcpci45 driver:) RCShutdownLANCard(): timeout\n");
- break;
- }
- }
- if (ReturnAddr != (PU32) NULL)
- *ReturnAddr = (U32) pPab->pCallbackFunc;
- }
- return RC_RTN_NO_ERROR;
-}
-
-/*
-** =========================================================================
-** RCSetRavlinIPandMask()
-**
-** Set the Ravlin 45/PCI cards IP address and network mask.
-**
-** IP address and mask must be in network byte order.
-** For example, IP address 1.2.3.4 and mask 255.255.255.0 would be
-** 0x04030201 and 0x00FFFFFF on a little endian machine.
-**
-** =========================================================================
-*/
-RC_RETURN
-RCSetRavlinIPandMask (struct net_device * dev, U32 ipAddr, U32 netMask)
-{
- volatile PU32 pMsg;
- U32 off;
- PPAB pPab = ((PDPA) dev->priv)->pPab;
-
- if (pPab == NULL)
- return RC_RTN_ADPTR_NOT_REGISTERED;
-
- off = pPab->p_atu->InQueue; /* get addresss of message */
-
- if (0xFFFFFFFF == off)
- return RC_RTN_FREE_Q_EMPTY;
-
- pMsg = (PU32) (pPab->pPci45LinBaseAddr + off);
-
- /* setup private message */
- pMsg[0] = SEVEN_WORD_MSG_SIZE | SGL_OFFSET_0;
- pMsg[1] = I2O_PRIVATE << 24 | I2O_HOST_TID << 12 | RC_LAN_TARGET_ID;
- pMsg[2] = 0; /* initiator context */
- pMsg[3] = 0x219; /* transaction context */
- pMsg[4] = RC_PCI45_VENDOR_ID << 16 | RC_PRIVATE_SET_IP_AND_MASK;
- pMsg[5] = ipAddr;
- pMsg[6] = netMask;
-
- pPab->p_atu->InQueue = off; /* send it to the I2O device */
- return RC_RTN_NO_ERROR;
-
-}
-
-/*
-** =========================================================================
-** RCGetRavlinIPandMask()
-**
-** get the IP address and MASK from the card
-**
-** =========================================================================
-*/
-RC_RETURN
-RCGetRavlinIPandMask (struct net_device * dev, PU32 pIpAddr, PU32 pNetMask,
- PFNWAITCALLBACK WaitCallback)
-{
- unsigned timeout;
- U32 off;
- PU32 pMsg, p32;
- PPAB pPab = ((PDPA) dev->priv)->pPab;
- PATU p_atu;
-
- dprintk
- ("RCGetRavlinIPandMask: pIpAddr is 0x%08ulx, *IpAddr is 0x%08ulx\n",
- (u32) pIpAddr, *pIpAddr);
-
- if (pPab == NULL)
- return RC_RTN_ADPTR_NOT_REGISTERED;
-
- p_atu = pPab->p_atu;
- off = p_atu->InQueue; /* get addresss of message */
-
- if (0xFFFFFFFF == off)
- return RC_RTN_FREE_Q_EMPTY;
-
- p32 = (volatile PU32) pPab->pLinOutMsgBlock;
- *p32 = 0xFFFFFFFF;
-
- pMsg = (PU32) (pPab->pPci45LinBaseAddr + off);
-
- dprintk
- ("RCGetRavlinIPandMask: p_atu 0x%08ulx, off 0x%08ulx, p32 0x%08ulx\n",
- (u32) p_atu, off, (u32) p32);
- /* setup private message */
- pMsg[0] = FIVE_WORD_MSG_SIZE | SGL_OFFSET_0;
- pMsg[1] = I2O_PRIVATE << 24 | I2O_HOST_TID << 12 | RC_LAN_TARGET_ID;
- pMsg[2] = 0; /* initiator context */
- pMsg[3] = 0x218; /* transaction context */
- pMsg[4] = RC_PCI45_VENDOR_ID << 16 | RC_PRIVATE_GET_IP_AND_MASK;
- pMsg[5] = pPab->outMsgBlockPhyAddr;
-
- p_atu->InQueue = off; /* send it to the I2O device */
- dprintk
- ("RCGetRavlinIPandMask: p_atu 0x%08ulx, off 0x%08ulx, p32 0x%08ulx\n",
- (u32) p_atu, off, (u32) p32);
-
- /* wait for the rcpci45 board to update the info */
- timeout = 100000;
- while (0xffffffff == *p32) {
- if (WaitCallback)
- (*WaitCallback) ();
-
- udelay (10);
-
- if (!timeout--) {
- dprintk ("RCGetRavlinIPandMask: Timeout\n");
- return RC_RTN_MSG_REPLY_TIMEOUT;
- }
- }
-
- dprintk
- ("RCGetRavlinIPandMask: after time out\np32[0] (IpAddr) 0x%08ulx, p32[1] (IPmask) 0x%08ulx\n",
- p32[0], p32[1]);
-
- /* send IP and mask to user's space */
- *pIpAddr = p32[0];
- *pNetMask = p32[1];
-
- dprintk
- ("RCGetRavlinIPandMask: pIpAddr is 0x%08ulx, *IpAddr is 0x%08ulx\n",
- (u32) pIpAddr, *pIpAddr);
-
- return RC_RTN_NO_ERROR;
-}
-
-/*
-** /////////////////////////////////////////////////////////////////////////
-** /////////////////////////////////////////////////////////////////////////
-**
-** local functions
-**
-** /////////////////////////////////////////////////////////////////////////
-** /////////////////////////////////////////////////////////////////////////
-*/
-
-/*
-** =========================================================================
-** SendI2OOutboundQInitMsg()
-**
-** =========================================================================
-*/
-static int
-SendI2OOutboundQInitMsg (PPAB pPab)
-{
- U32 msgOffset, timeout, phyOutQFrames, i;
- volatile PU32 pMsg;
- volatile PU32 p32;
-
- msgOffset = pPab->p_atu->InQueue;
-
- if (msgOffset == 0xFFFFFFFF) {
- dprintk ("SendI2OOutboundQInitMsg(): Inbound Free Q empty!\n");
- return RC_RTN_FREE_Q_EMPTY;
- }
-
- /* calc virtual address of msg - virtual already mapped to physical */
- pMsg = (PU32) (pPab->pPci45LinBaseAddr + msgOffset);
-
- dprintk
- ("SendI2OOutboundQInitMsg - pMsg = 0x%08ulx, InQ msgOffset = 0x%08ulx\n",
- (u32) pMsg, msgOffset);
-
- pMsg[0] = EIGHT_WORD_MSG_SIZE | TRL_OFFSET_6;
- pMsg[1] =
- I2O_EXEC_OUTBOUND_INIT << 24 | I2O_HOST_TID << 12 | I2O_IOP_TID;
- pMsg[2] = DEFAULT_RECV_INIT_CONTEXT;
- pMsg[3] = 0x106; /* transaction context */
- pMsg[4] = 4096; /* Host page frame size */
- pMsg[5] = MSG_FRAME_SIZE << 16 | 0x80; /* outbound msg frame size and Initcode */
- pMsg[6] = 0xD0000004; /* simple sgl element LE, EOB */
- /* phys address to return status - area right after PAB */
- pMsg[7] = pPab->outMsgBlockPhyAddr;
-
- /* virtual pointer to return buffer - clear first two dwords */
- p32 = (PU32) pPab->pLinOutMsgBlock;
- p32[0] = 0;
-
- /* post to Inbound Post Q */
- pPab->p_atu->InQueue = msgOffset;
-
- /* wait for response */
- timeout = 100000;
- while (1) {
- udelay (10); /* please don't hog the bus!!! */
-
- if (p32[0])
- break;
-
- if (!timeout--) {
- dprintk
- ("Timeout wait for InitOutQ InPrgress status from IOP\n");
- return RC_RTN_NO_I2O_STATUS;
- }
- }
-
- timeout = 100000;
- while (1) {
- udelay (10); /* please don't hog the bus!!! */
-
- if (p32[0] == I2O_EXEC_OUTBOUND_INIT_COMPLETE)
- break;
-
- if (!timeout--) {
- dprintk
- ("Timeout wait for InitOutQ Complete status from IOP\n");
- return RC_RTN_NO_I2O_STATUS;
- }
- }
-
- /* load PCI outbound free Q with MF physical addresses */
- phyOutQFrames = pPab->outMsgBlockPhyAddr;
-
- for (i = 0; i < NMBR_MSG_FRAMES; i++) {
- pPab->p_atu->OutQueue = phyOutQFrames;
- phyOutQFrames += MSG_FRAME_SIZE;
- }
- return RC_RTN_NO_ERROR;
-}
-
-/*
-** =========================================================================
-** GetI2OStatus()
-**
-** Send StatusGet Msg, wait for results return directly to buffer.
-**
-** =========================================================================
-*/
-static int
-GetI2OStatus (PPAB pPab)
-{
- U32 msgOffset, timeout;
- PU32 pMsg;
- volatile PU32 p32;
-
- msgOffset = pPab->p_atu->InQueue;
- dprintk ("GetI2OStatus: msg offset = 0x%x\n", msgOffset);
- if (msgOffset == 0xFFFFFFFF) {
- dprintk ("GetI2OStatus(): Inbound Free Q empty!\n");
- return RC_RTN_FREE_Q_EMPTY;
- }
-
- /* calc virtual address of msg - virtual already mapped to physical */
- pMsg = (PU32) (pPab->pPci45LinBaseAddr + msgOffset);
-
- pMsg[0] = NINE_WORD_MSG_SIZE | SGL_OFFSET_0;
- pMsg[1] = I2O_EXEC_STATUS_GET << 24 | I2O_HOST_TID << 12 | I2O_IOP_TID;
- pMsg[2] = 0; /* universal context */
- pMsg[3] = 0; /* universal context */
- pMsg[4] = 0; /* universal context */
- pMsg[5] = 0; /* universal context */
- /* phys address to return status - area right after PAB */
- pMsg[6] = pPab->outMsgBlockPhyAddr;
- pMsg[7] = 0;
- pMsg[8] = 88; /* return 88 bytes */
-
- /* virtual pointer to return buffer - clear first two dwords */
- p32 = (volatile PU32) pPab->pLinOutMsgBlock;
- p32[0] = 0;
- p32[1] = 0;
-
- dprintk
- ("GetI2OStatus - pMsg:0x%08ulx, msgOffset:0x%08ulx, [1]:0x%08ulx, [6]:0x%08ulx\n",
- (u32) pMsg, msgOffset, pMsg[1], pMsg[6]);
-
- /* post to Inbound Post Q */
- pPab->p_atu->InQueue = msgOffset;
-
- dprintk ("Return status to p32 = 0x%08ulx\n", (u32) p32);
-
- /* wait for response */
- timeout = 1000000;
- while (1) {
- udelay (10); /* please don't hog the bus!!! */
-
- if (p32[0] && p32[1])
- break;
-
- if (!timeout--) {
- dprintk ("Timeout waiting for status from IOP\n");
- dprintk ("0x%08ulx:0x%08ulx:0x%08ulx:0x%08ulx\n",
- p32[0], p32[1], p32[2], p32[3]);
- dprintk ("0x%08ulx:0x%08ulx:0x%08ulx:0x%08ulx\n",
- p32[4], p32[5], p32[6], p32[7]);
- dprintk ("0x%08ulx:0x%08ulx:0x%08ulx:0x%08ulx\n",
- p32[8], p32[9], p32[10], p32[11]);
- return RC_RTN_NO_I2O_STATUS;
- }
- }
-
- dprintk ("0x%08ulx:0x%08ulx:0x%08ulx:0x%08ulx\n", p32[0], p32[1],
- p32[2], p32[3]);
- dprintk ("0x%08ulx:0x%08ulx:0x%08ulx:0x%08ulx\n", p32[4], p32[5],
- p32[6], p32[7]);
- dprintk ("0x%08ulx:0x%08ulx:0x%08ulx:0x%08ulx\n", p32[8], p32[9],
- p32[10], p32[11]);
- /* get IOP state */
- pPab->IOPState = ((volatile PU8) p32)[10];
- pPab->InboundMFrameSize = ((volatile PU16) p32)[6];
-
- dprintk ("IOP state 0x%02x InFrameSize = 0x%04x\n",
- pPab->IOPState, pPab->InboundMFrameSize);
- return RC_RTN_NO_ERROR;
-}
-
-/*
-** =========================================================================
-** SendEnableSysMsg()
-**
-**
-** =========================================================================
-*/
-static int
-SendEnableSysMsg (PPAB pPab)
-{
- U32 msgOffset;
- volatile PU32 pMsg;
-
- msgOffset = pPab->p_atu->InQueue;
-
- if (msgOffset == 0xFFFFFFFF) {
- dprintk ("SendEnableSysMsg(): Inbound Free Q empty!\n");
- return RC_RTN_FREE_Q_EMPTY;
- }
-
- /* calc virtual address of msg - virtual already mapped to physical */
- pMsg = (PU32) (pPab->pPci45LinBaseAddr + msgOffset);
-
- dprintk
- ("SendEnableSysMsg - pMsg = 0x%08ulx, InQ msgOffset = 0x%08ulx\n",
- (u32) pMsg, msgOffset);
-
- pMsg[0] = FOUR_WORD_MSG_SIZE | SGL_OFFSET_0;
- pMsg[1] = I2O_EXEC_SYS_ENABLE << 24 | I2O_HOST_TID << 12 | I2O_IOP_TID;
- pMsg[2] = DEFAULT_RECV_INIT_CONTEXT;
- pMsg[3] = 0x110; /* transaction context */
- pMsg[4] = 0x50657465; /* RedCreek Private */
-
- /* post to Inbound Post Q */
- pPab->p_atu->InQueue = msgOffset;
-
- return RC_RTN_NO_ERROR;
-}
-
-/*
-** =========================================================================
-** FillI2OMsgFromTCB()
-**
-** inputs pMsgU32 - virtual pointer (mapped to physical) of message frame
-** pXmitCntrlBlock - pointer to caller buffer control block.
-**
-** fills in LAN SGL after Transaction Control Word or Bucket Count.
-** =========================================================================
-*/
-static int
-FillI2OMsgSGLFromTCB (PU32 pMsgFrame, PRCTCB pTransCtrlBlock)
-{
- unsigned int nmbrBuffers, nmbrSeg, nmbrDwords, context, flags;
- PU32 pTCB, pMsg;
-
- /* SGL element flags */
-#define EOB 0x40000000
-#define LE 0x80000000
-#define SIMPLE_SGL 0x10000000
-#define BC_PRESENT 0x01000000
-
- pTCB = (PU32) pTransCtrlBlock;
- pMsg = pMsgFrame;
- nmbrDwords = 0;
-
- dprintk ("FillI2OMsgSGLFromTCBX\n");
- dprintk ("TCB 0x%08ulx:0x%08ulx:0x%08ulx:0x%08ulx:0x%08ulx\n",
- pTCB[0], pTCB[1], pTCB[2], pTCB[3], pTCB[4]);
- dprintk ("pTCB 0x%08ulx, pMsg 0x%08ulx\n", (u32) pTCB, (u32) pMsg);
-
- nmbrBuffers = *pTCB++;
-
- if (!nmbrBuffers) {
- return -1;
- }
-
- do {
- context = *pTCB++; /* buffer tag (context) */
- nmbrSeg = *pTCB++; /* number of segments */
-
- if (!nmbrSeg) {
- return -1;
- }
-
- flags = SIMPLE_SGL | BC_PRESENT;
-
- if (1 == nmbrSeg) {
- flags |= EOB;
-
- if (1 == nmbrBuffers)
- flags |= LE;
- }
-
- /* 1st SGL buffer element has context */
- pMsg[0] = pTCB[0] | flags; /* send over count (segment size) */
- pMsg[1] = context;
- pMsg[2] = pTCB[1]; /* send buffer segment physical address */
- nmbrDwords += 3;
- pMsg += 3;
- pTCB += 2;
-
- if (--nmbrSeg) {
- do {
- flags = SIMPLE_SGL;
-
- if (1 == nmbrSeg) {
- flags |= EOB;
-
- if (1 == nmbrBuffers)
- flags |= LE;
- }
-
- pMsg[0] = pTCB[0] | flags; /* send over count */
- pMsg[1] = pTCB[1]; /* send buffer segment physical address */
- nmbrDwords += 2;
- pTCB += 2;
- pMsg += 2;
-
- } while (--nmbrSeg);
- }
-
- } while (--nmbrBuffers);
-
- return nmbrDwords;
-}
-
-/*
-** =========================================================================
-** ProcessOutboundI2OMsg()
-**
-** process I2O reply message
-** * change to msg structure *
-** =========================================================================
-*/
-static void
-ProcessOutboundI2OMsg (PPAB pPab, U32 phyAddrMsg)
-{
- PU8 p8Msg;
- PU32 p32;
-/* U16 count; */
-
- p8Msg = pPab->pLinOutMsgBlock + (phyAddrMsg - pPab->outMsgBlockPhyAddr);
- p32 = (PU32) p8Msg;
-
- dprintk
- ("VXD: ProcessOutboundI2OMsg - pPab 0x%08ulx, phyAdr 0x%08ulx, linAdr 0x%08ulx\n",
- (u32) pPab, phyAddrMsg, (u32) p8Msg);
- dprintk ("msg :0x%08ulx:0x%08ulx:0x%08ulx:0x%08ulx\n", p32[0], p32[1],
- p32[2], p32[3]);
- dprintk ("msg :0x%08ulx:0x%08ulx:0x%08ulx:0x%08ulx\n", p32[4], p32[5],
- p32[6], p32[7]);
-
- if (p32[4] >> 24 != I2O_REPLY_STATUS_SUCCESS) {
- dprintk ("Message reply status not success\n");
- return;
- }
-
- switch (p8Msg[7]) { /* function code byte */
- case I2O_EXEC_SYS_TAB_SET:
- msgFlag = 1;
- dprintk ("Received I2O_EXEC_SYS_TAB_SET reply\n");
- break;
-
- case I2O_EXEC_HRT_GET:
- msgFlag = 1;
- dprintk ("Received I2O_EXEC_HRT_GET reply\n");
- break;
-
- case I2O_EXEC_LCT_NOTIFY:
- msgFlag = 1;
- dprintk ("Received I2O_EXEC_LCT_NOTIFY reply\n");
- break;
-
- case I2O_EXEC_SYS_ENABLE:
- msgFlag = 1;
- dprintk ("Received I2O_EXEC_SYS_ENABLE reply\n");
- break;
-
- default:
- dprintk ("Received UNKNOWN reply\n");
- break;
- }
-}
+++ /dev/null
-/*
-** *************************************************************************
-**
-**
-** R C L A N M T L . H $Revision: 6 $
-**
-**
-** RedCreek I2O LAN Message Transport Layer header file.
-**
-** ---------------------------------------------------------------------
-** --- Copyright (c) 1997-1999, RedCreek Communications Inc. ---
-** --- All rights reserved. ---
-** ---------------------------------------------------------------------
-**
-** File Description:
-**
-** Header file for host I2O (Intelligent I/O) LAN message transport layer
-** API and data types.
-**
-** This program is free software; you can redistribute it and/or modify
-** it under the terms of the GNU General Public License as published by
-** the Free Software Foundation; either version 2 of the License, or
-** (at your option) any later version.
-
-** This program is distributed in the hope that it will be useful,
-** but WITHOUT ANY WARRANTY; without even the implied warranty of
-** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-** GNU General Public License for more details.
-
-** You should have received a copy of the GNU General Public License
-** along with this program; if not, write to the Free Software
-** Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
-**
-** *************************************************************************
-*/
-
-#ifndef RCLANMTL_H
-#define RCLANMTL_H
-
-/* Linux specific includes */
-#include <asm/types.h>
-#ifdef RC_LINUX_MODULE /* linux modules need non-library version of string functions */
-#include <linux/string.h>
-#else
-#include <string.h>
-#endif
-#include <linux/delay.h> /* for udelay() */
-
-#include <linux/netdevice.h>
-#include <linux/if_ether.h>
-#include <linux/etherdevice.h>
-#include <linux/skbuff.h>
-
-#include <asm/io.h>
-
-/* Debug stuff. Define for debug output */
-#undef RCDEBUG
-
-#ifdef RCDEBUG
-#define dprintk(args...) printk(KERN_DEBUG "rc: " args)
-#else
-#define dprintk(args...) { }
-#endif
-
-/* Typedefs */
-
- /* scalar data types */
-typedef __u8 U8;
-typedef __u16 U16;
-typedef __u32 U32;
-typedef __u8 *PU8;
-typedef __u16 *PU16;
-typedef __u32 *PU32;
-typedef unsigned long BF;
-typedef int RC_RETURN;
-
- /*
- ** type PFNWAITCALLBACK
- **
- ** pointer to void function - type used for WaitCallback in some functions
- */
-typedef void (*PFNWAITCALLBACK) (void); /* void argument avoids compiler complaint */
-
- /*
- ** type PFNTXCALLBACK
- **
- ** Pointer to user's transmit callback function. This user function is
- ** called from RCProcI2OMsgQ() when packet have been transmitted from buffers
- ** given in the RCI2OSendPacket() function. BufferContext is a pointer to
- ** an array of 32 bit context values. These are the values the user assigned
- ** and passed in the TCB to the RCI2OSendPacket() function. PcktCount
- ** indicates the number of buffer context values in the BufferContext[] array.
- ** The User's TransmitCallbackFunction should recover (put back in free queue)
- ** the packet buffers associated with the buffer context values.
- */
-typedef void (*PFNTXCALLBACK) (U32 Status,
- U16 PcktCount,
- PU32 BufferContext, struct net_device *);
-
- /*
- ** type PFNRXCALLBACK
- **
- ** Pointer to user's receive callback function. This user function
- ** is called from RCProcI2OMsgQ() when packets have been received into
- ** previously posted packet buffers throught the RCPostRecvBuffers() function.
- ** The received callback function should process the Packet Descriptor Block
- ** pointed to by PacketDescBlock. See Packet Decription Block below.
- */
-typedef void (*PFNRXCALLBACK) (U32 Status,
- U8 PktCount,
- U32 BucketsRemain,
- PU32 PacketDescBlock, struct net_device *);
-
- /*
- ** type PFNCALLBACK
- **
- ** Pointer to user's generic callback function. This user function
- ** can be passed to LANReset or LANShutdown and is called when the
- ** the reset or shutdown is complete.
- ** Param1 and Param2 are invalid for LANReset and LANShutdown.
- */
-typedef void (*PFNCALLBACK) (U32 Status,
- U32 Param1, U32 Param2, struct net_device * dev);
-
-/*
-** Message Unit CSR definitions for RedCreek PCI45 board
-*/
-typedef struct tag_rcatu {
- volatile unsigned long APICRegSel; /* APIC Register Select */
- volatile unsigned long reserved0;
- volatile unsigned long APICWinReg; /* APIC Window Register */
- volatile unsigned long reserved1;
- volatile unsigned long InMsgReg0; /* inbound message register 0 */
- volatile unsigned long InMsgReg1; /* inbound message register 1 */
- volatile unsigned long OutMsgReg0; /* outbound message register 0 */
- volatile unsigned long OutMsgReg1; /* outbound message register 1 */
- volatile unsigned long InDoorReg; /* inbound doorbell register */
- volatile unsigned long InIntStat; /* inbound interrupt status register */
- volatile unsigned long InIntMask; /* inbound interrupt mask register */
- volatile unsigned long OutDoorReg; /* outbound doorbell register */
- volatile unsigned long OutIntStat; /* outbound interrupt status register */
- volatile unsigned long OutIntMask; /* outbound interrupt mask register */
- volatile unsigned long reserved2;
- volatile unsigned long reserved3;
- volatile unsigned long InQueue; /* inbound queue port */
- volatile unsigned long OutQueue; /* outbound queue port */
- volatile unsigned long reserved4;
- volatile unsigned long reserver5;
- /* RedCreek extension */
- volatile unsigned long EtherMacLow;
- volatile unsigned long EtherMacHi;
- volatile unsigned long IPaddr;
- volatile unsigned long IPmask;
-} *PATU;
-
- /*
- ** typedef PAB
- **
- ** PCI Adapter Block - holds instance specific information.
- */
-typedef struct {
- PATU p_atu; /* ptr to ATU register block */
- PU8 pPci45LinBaseAddr;
- PU8 pLinOutMsgBlock;
- U32 outMsgBlockPhyAddr;
- PFNTXCALLBACK pTransCallbackFunc;
- PFNRXCALLBACK pRecvCallbackFunc;
- PFNCALLBACK pRebootCallbackFunc;
- PFNCALLBACK pCallbackFunc;
- U16 IOPState;
- U16 InboundMFrameSize;
-} *PPAB;
-
-/*
- * Driver Private Area, DPA.
- */
-typedef struct {
- U8 id; /* the AdapterID */
-
- /* These two field are basically for the RCioctl function.
- * I could not determine if they could be avoided. (RAA)*/
- U32 pci_addr; /* the pci address of the adapter */
- U32 pci_addr_len;
-
- struct pci_dev *pci_dev;
- struct timer_list timer; /* timer */
- struct net_device_stats stats; /* the statistics structure */
- unsigned long numOutRcvBuffers; /* number of outstanding receive buffers */
- unsigned char shutdown;
- unsigned char reboot;
- unsigned char nexus;
- PU8 msgbuf; /* Pointer to Lan Api Private Area */
- dma_addr_t msgbuf_dma;
- PPAB pPab; /* Pointer to the PCI Adapter Block */
-} *PDPA;
-
-/* PCI/45 Configuration space values */
-#define RC_PCI45_VENDOR_ID 0x4916
-#define RC_PCI45_DEVICE_ID 0x1960
-
- /* RedCreek API function return values */
-#define RC_RTN_NO_ERROR 0
-#define RC_RTN_I2O_NOT_INIT 1
-#define RC_RTN_FREE_Q_EMPTY 2
-#define RC_RTN_TCB_ERROR 3
-#define RC_RTN_TRANSACTION_ERROR 4
-#define RC_RTN_ADAPTER_ALREADY_INIT 5
-#define RC_RTN_MALLOC_ERROR 6
-#define RC_RTN_ADPTR_NOT_REGISTERED 7
-#define RC_RTN_MSG_REPLY_TIMEOUT 8
-#define RC_RTN_NO_I2O_STATUS 9
-#define RC_RTN_NO_FIRM_VER 10
-#define RC_RTN_NO_LINK_SPEED 11
-
-/* Driver capability flags */
-#define WARM_REBOOT_CAPABLE 0x01
-
-/*
-** Status - Transmit and Receive callback status word
-**
-** A 32 bit Status is returned to the TX and RX callback functions. This value
-** contains both the reply status and the detailed status as follows:
-**
-** 32 24 16 0
-** +------+------+------------+
-** | Reply| | Detailed |
-** |Status| 0 | Status |
-** +------+------+------------+
-**
-** Reply Status and Detailed Status of zero indicates No Errors.
-*/
- /* reply message status defines */
-#define I2O_REPLY_STATUS_SUCCESS 0x00
-#define I2O_REPLY_STATUS_ABORT_NO_DATA_TRANSFER 0x02
-#define I2O_REPLY_STATUS_TRANSACTION_ERROR 0x0A
-
-/* DetailedStatusCode defines */
-#define I2O_LAN_DSC_SUCCESS 0x0000
-#define I2O_LAN_DSC_DEVICE_FAILURE 0x0001
-#define I2O_LAN_DSC_DESTINATION_NOT_FOUND 0x0002
-#define I2O_LAN_DSC_TRANSMIT_ERROR 0x0003
-#define I2O_LAN_DSC_TRANSMIT_ABORTED 0x0004
-#define I2O_LAN_DSC_RECEIVE_ERROR 0x0005
-#define I2O_LAN_DSC_RECEIVE_ABORTED 0x0006
-#define I2O_LAN_DSC_DMA_ERROR 0x0007
-#define I2O_LAN_DSC_BAD_PACKET_DETECTED 0x0008
-#define I2O_LAN_DSC_OUT_OF_MEMORY 0x0009
-#define I2O_LAN_DSC_BUCKET_OVERRUN 0x000A
-#define I2O_LAN_DSC_IOP_INTERNAL_ERROR 0x000B
-#define I2O_LAN_DSC_CANCELED 0x000C
-#define I2O_LAN_DSC_INVALID_TRANSACTION_CONTEXT 0x000D
-#define I2O_LAN_DSC_DESTINATION_ADDRESS_DETECTED 0x000E
-#define I2O_LAN_DSC_DESTINATION_ADDRESS_OMITTED 0x000F
-#define I2O_LAN_DSC_PARTIAL_PACKET_RETURNED 0x0010
-
-/*
-** Packet Description Block (Received packets)
-**
-** A pointer to this block structure is returned to the ReceiveCallback
-** function. It contains the list of packet buffers which have either been
-** filled with a packet or returned to host due to a LANReset function.
-** Currently there will only be one packet per receive bucket (buffer) posted.
-**
-** 32 24 0
-** +-----------------------+ -\
-** | Buffer 1 Context | \
-** +-----------------------+ \
-** | 0xC0000000 | / First Bucket Descriptor
-** +-----+-----------------+ /
-** | 0 | packet 1 length | /
-** +-----------------------+ -\
-** | Buffer 2 Context | \
-** +-----------------------+ \
-** | 0xC0000000 | / Second Bucket Descriptor
-** +-----+-----------------+ /
-** | 0 | packet 2 length | /
-** +-----+-----------------+ -
-** | ... | ----- more bucket descriptors
-** +-----------------------+ -\
-** | Buffer n Context | \
-** +-----------------------+ \
-** | 0xC0000000 | / Last Bucket Descriptor
-** +-----+-----------------+ /
-** | 0 | packet n length | /
-** +-----+-----------------+ -
-**
-** Buffer Context values are those given to adapter in the TCB on calls to
-** RCPostRecvBuffers().
-**
-*/
-
-/*
-** Transaction Control Block (TCB) structure
-**
-** A structure like this is filled in by the user and passed by reference to
-** RCI2OSendPacket() and RCPostRecvBuffers() functions. Minimum size is five
-** 32-bit words for one buffer with one segment descriptor.
-** MAX_NMBR_POST_BUFFERS_PER_MSG defines the maximum single segment buffers
-** that can be described in a given TCB.
-**
-** 32 0
-** +-----------------------+
-** | Buffer Count | Number of buffers in the TCB
-** +-----------------------+
-** | Buffer 1 Context | first buffer reference
-** +-----------------------+
-** | Buffer 1 Seg Count | number of segments in buffer
-** +-----------------------+
-** | Buffer 1 Seg Desc 1 | first segment descriptor (size, physical address)
-** +-----------------------+
-** | ... | more segment descriptors (size, physical address)
-** +-----------------------+
-** | Buffer 1 Seg Desc n | last segment descriptor (size, physical address)
-** +-----------------------+
-** | Buffer 2 Context | second buffer reference
-** +-----------------------+
-** | Buffer 2 Seg Count | number of segments in buffer
-** +-----------------------+
-** | Buffer 2 Seg Desc 1 | segment descriptor (size, physical address)
-** +-----------------------+
-** | ... | more segment descriptors (size, physical address)
-** +-----------------------+
-** | Buffer 2 Seg Desc n |
-** +-----------------------+
-** | ... | more buffer descriptor blocks ...
-** +-----------------------+
-** | Buffer n Context |
-** +-----------------------+
-** | Buffer n Seg Count |
-** +-----------------------+
-** | Buffer n Seg Desc 1 |
-** +-----------------------+
-** | ... |
-** +-----------------------+
-** | Buffer n Seg Desc n |
-** +-----------------------+
-**
-**
-** A TCB for one contigous packet buffer would look like the following:
-**
-** 32 0
-** +-----------------------+
-** | 1 | one buffer in the TCB
-** +-----------------------+
-** | <user's Context> | user's buffer reference
-** +-----------------------+
-** | 1 | one segment buffer
-** +-----------------------+ _
-** | <buffer size> | size \
-** +-----------------------+ \ segment descriptor
-** | <physical address> | physical address of buffer /
-** +-----------------------+ _/
-**
-*/
-
- /* Buffer Segment Descriptor */
-typedef struct {
- U32 size;
- U32 phyAddress;
-} BSD, *PBSD;
-
-typedef PU32 PRCTCB;
-/*
-** -------------------------------------------------------------------------
-** Exported functions comprising the API to the LAN I2O message transport layer
-** -------------------------------------------------------------------------
-*/
-
- /*
- ** InitRCI2OMsgLayer()
- **
- ** Called once prior to using the I2O LAN message transport layer. User
- ** provides both the physical and virual address of a locked page buffer
- ** that is used as a private buffer for the RedCreek I2O message
- ** transport layer. This buffer must be a contigous memory block of a
- ** minimum of 16K bytes and long word aligned. The user also must provide
- ** the base address of the RedCreek PCI adapter assigned by BIOS or operating
- ** system.
- **
- ** Inputs: dev - the net_device struct for the device.
- ** TransmitCallbackFunction - address of user's TX callback function
- ** ReceiveCallbackFunction - address of user's RX callback function
- ** RebootCallbackFunction - address of user's reboot callback function
- **
- */
-RC_RETURN RCInitI2OMsgLayer (struct net_device *dev,
- PFNTXCALLBACK TransmitCallbackFunction,
- PFNRXCALLBACK ReceiveCallbackFunction,
- PFNCALLBACK RebootCallbackFunction);
-
- /*
- ** RCSetRavlinIPandMask()
- **
- ** Set the Ravlin 45/PCI cards IP address and network mask.
- **
- ** IP address and mask must be in network byte order.
- ** For example, IP address 1.2.3.4 and mask 255.255.255.0 would be
- ** 0x04030201 and 0x00FFFFFF on a little endian machine.
- **
- */
-RC_RETURN RCSetRavlinIPandMask (struct net_device *dev, U32 ipAddr,
- U32 netMask);
-
-/*
-** =========================================================================
-** RCGetRavlinIPandMask()
-**
-** get the IP address and MASK from the card
-**
-** =========================================================================
-*/
-RC_RETURN
-RCGetRavlinIPandMask (struct net_device *dev, PU32 pIpAddr, PU32 pNetMask,
- PFNWAITCALLBACK WaitCallback);
-
- /*
- ** RCProcI2OMsgQ()
- **
- ** Called from user's polling loop or Interrupt Service Routine for a PCI
- ** interrupt from the RedCreek PCI adapter. User responsible for determining
- ** and hooking the PCI interrupt. This function will call the registered
- ** callback functions, TransmitCallbackFunction or ReceiveCallbackFunction,
- ** if a TX or RX transaction has completed.
- */
-irqreturn_t RCProcI2OMsgQ (struct net_device *dev);
-
- /*
- ** Disable and Enable I2O interrupts. I2O interrupts are enabled at Init time
- ** but can be disabled and re-enabled through these two function calls.
- ** Packets will still be put into any posted received buffers and packets will
- ** be sent through RCI2OSendPacket() functions. Disabling I2O interrupts
- ** will prevent hardware interrupt to host even though the outbound I2O msg
- ** queue is not emtpy.
- */
-RC_RETURN RCEnableI2OInterrupts (struct net_device *dev);
-RC_RETURN RCDisableI2OInterrupts (struct net_device *dev);
-
- /*
- ** RCPostRecvBuffers()
- **
- ** Post user's page locked buffers for use by the PCI adapter to
- ** return ethernet packets received from the LAN. Transaction Control Block,
- ** provided by user, contains buffer descriptor(s) which includes a buffer
- ** context number along with buffer size and physical address. See TCB above.
- ** The buffer context and actual packet length are returned to the
- ** ReceiveCallbackFunction when packets have been received. Buffers posted
- ** to the RedCreek adapter are considered owned by the adapter until the
- ** context is return to user through the ReceiveCallbackFunction.
- */
-RC_RETURN RCPostRecvBuffers (struct net_device *dev,
- PRCTCB pTransactionCtrlBlock);
-#define MAX_NMBR_POST_BUFFERS_PER_MSG 32
-
- /*
- ** RCI2OSendPacket()
- **
- ** Send user's ethernet packet from a locked page buffer.
- ** Packet must have full MAC header, however without a CRC.
- ** Initiator context is a user provided value that is returned
- ** to the TransmitCallbackFunction when packet buffer is free.
- ** Transmit buffer are considered owned by the adapter until context's
- ** returned to user through the TransmitCallbackFunction.
- */
-RC_RETURN RCI2OSendPacket (struct net_device *dev,
- U32 context, PRCTCB pTransactionCtrlBlock);
-
- /* Ethernet Link Statistics structure */
-typedef struct tag_RC_link_stats {
- U32 TX_good; /* good transmit frames */
- U32 TX_maxcol; /* frames not TX due to MAX collisions */
- U32 TX_latecol; /* frames not TX due to late collisions */
- U32 TX_urun; /* frames not TX due to DMA underrun */
- U32 TX_crs; /* frames TX with lost carrier sense */
- U32 TX_def; /* frames deferred due to activity on link */
- U32 TX_singlecol; /* frames TX with one and only on collision */
- U32 TX_multcol; /* frames TX with more than one collision */
- U32 TX_totcol; /* total collisions detected during TX */
- U32 Rcv_good; /* good frames received */
- U32 Rcv_CRCerr; /* frames RX and discarded with CRC errors */
- U32 Rcv_alignerr; /* frames RX with alignment and CRC errors */
- U32 Rcv_reserr; /* good frames discarded due to no RX buffer */
- U32 Rcv_orun; /* RX frames lost due to FIFO overrun */
- U32 Rcv_cdt; /* RX frames with collision during RX */
- U32 Rcv_runt; /* RX frames shorter than 64 bytes */
-} RCLINKSTATS, *P_RCLINKSTATS;
-
- /*
- ** RCGetLinkStatistics()
- **
- ** Returns link statistics in user's structure at address StatsReturnAddr
- ** If given, not NULL, the function WaitCallback is called during the wait
- ** loop while waiting for the adapter to respond.
- */
-RC_RETURN RCGetLinkStatistics (struct net_device *dev,
- P_RCLINKSTATS StatsReturnAddr,
- PFNWAITCALLBACK WaitCallback);
-
- /*
- ** RCGetLinkStatus()
- **
- ** Return link status, up or down, to user's location addressed by ReturnAddr.
- ** If given, not NULL, the function WaitCallback is called during the wait
- ** loop while waiting for the adapter to respond.
- */
-RC_RETURN RCGetLinkStatus (struct net_device *dev,
- PU32 pReturnStatus, PFNWAITCALLBACK WaitCallback);
-
- /* Link Status defines - value returned in pReturnStatus */
-#define RC_LAN_LINK_STATUS_DOWN 0
-#define RC_LAN_LINK_STATUS_UP 1
-
- /*
- ** RCGetMAC()
- **
- ** Get the current MAC address assigned to user. RedCreek Ravlin 45/PCI
- ** has two MAC addresses. One which is private to the PCI Card, and
- ** another MAC which is given to the user as its link layer MAC address. The
- ** adapter runs in promiscous mode because of the dual address requirement.
- ** The MAC address is returned to the unsigned char array pointer to by mac.
- */
-RC_RETURN RCGetMAC (struct net_device *dev, PFNWAITCALLBACK WaitCallback);
-
- /*
- ** RCSetMAC()
- **
- ** Set a new user port MAC address. This address will be returned on
- ** subsequent RCGetMAC() calls.
- */
-RC_RETURN RCSetMAC (struct net_device *dev, PU8 mac);
-
- /*
- ** RCSetLinkSpeed()
- **
- ** set adapter's link speed based on given input code.
- */
-RC_RETURN RCSetLinkSpeed (struct net_device *dev, U16 LinkSpeedCode);
- /* Set link speed codes */
-#define LNK_SPD_AUTO_NEG_NWAY 0
-#define LNK_SPD_100MB_FULL 1
-#define LNK_SPD_100MB_HALF 2
-#define LNK_SPD_10MB_FULL 3
-#define LNK_SPD_10MB_HALF 4
-
- /*
- ** RCGetLinkSpeed()
- **
- ** Return link speed code.
- */
- /* Return link speed codes */
-#define LNK_SPD_UNKNOWN 0
-#define LNK_SPD_100MB_FULL 1
-#define LNK_SPD_100MB_HALF 2
-#define LNK_SPD_10MB_FULL 3
-#define LNK_SPD_10MB_HALF 4
-
-RC_RETURN
-RCGetLinkSpeed (struct net_device *dev, PU32 pLinkSpeedCode,
- PFNWAITCALLBACK WaitCallback);
-/*
-** =========================================================================
-** RCSetPromiscuousMode(struct net_device *dev, U16 Mode)
-**
-** Defined values for Mode:
-** 0 - turn off promiscuous mode
-** 1 - turn on promiscuous mode
-**
-** =========================================================================
-*/
-#define PROMISCUOUS_MODE_OFF 0
-#define PROMISCUOUS_MODE_ON 1
-RC_RETURN RCSetPromiscuousMode (struct net_device *dev, U16 Mode);
-/*
-** =========================================================================
-** RCGetPromiscuousMode(struct net_device *dev, PU32 pMode, PFNWAITCALLBACK WaitCallback)
-**
-** get promiscuous mode setting
-**
-** Possible return values placed in pMode:
-** 0 = promisuous mode not set
-** 1 = promisuous mode is set
-**
-** =========================================================================
-*/
-RC_RETURN
-RCGetPromiscuousMode (struct net_device *dev, PU32 pMode,
- PFNWAITCALLBACK WaitCallback);
-
-/*
-** =========================================================================
-** RCSetBroadcastMode(struct net_device *dev, U16 Mode)
-**
-** Defined values for Mode:
-** 0 - turn off promiscuous mode
-** 1 - turn on promiscuous mode
-**
-** =========================================================================
-*/
-#define BROADCAST_MODE_OFF 0
-#define BROADCAST_MODE_ON 1
-RC_RETURN RCSetBroadcastMode (struct net_device *dev, U16 Mode);
-/*
-** =========================================================================
-** RCGetBroadcastMode(struct net_device *dev, PU32 pMode, PFNWAITCALLBACK WaitCallback)
-**
-** get broadcast mode setting
-**
-** Possible return values placed in pMode:
-** 0 = broadcast mode not set
-** 1 = broadcast mode is set
-**
-** =========================================================================
-*/
-RC_RETURN
-RCGetBroadcastMode (struct net_device *dev, PU32 pMode,
- PFNWAITCALLBACK WaitCallback);
-/*
-** =========================================================================
-** RCReportDriverCapability(struct net_device *dev, U32 capability)
-**
-** Currently defined bits:
-** WARM_REBOOT_CAPABLE 0x01
-**
-** =========================================================================
-*/
-RC_RETURN RCReportDriverCapability (struct net_device *dev, U32 capability);
-
-/*
-** RCGetFirmwareVer()
-**
-** Return firmware version in the form "SoftwareVersion : Bt BootVersion"
-**
-** WARNING: user's space pointed to by pFirmString should be at least 60 bytes.
-*/
-RC_RETURN
-RCGetFirmwareVer (struct net_device *dev, PU8 pFirmString,
- PFNWAITCALLBACK WaitCallback);
-
-/*
-** ----------------------------------------------
-** LAN adapter Reset and Shutdown functions
-** ----------------------------------------------
-*/
- /* resource flag bit assignments for RCResetLANCard() & RCShutdownLANCard() */
-#define RC_RESOURCE_RETURN_POSTED_RX_BUCKETS 0x0001
-#define RC_RESOURCE_RETURN_PEND_TX_BUFFERS 0x0002
-
- /*
- ** RCResetLANCard()
- **
- ** Reset LAN card operation. Causes a software reset of the ethernet
- ** controller and restarts the command and receive units. Depending on
- ** the ResourceFlags given, the buffers are either returned to the
- ** host with reply status of I2O_REPLY_STATUS_ABORT_NO_DATA_TRANSFER and
- ** detailed status of I2O_LAN_DSC_CANCELED (new receive buffers must be
- ** posted after issuing this) OR the buffers are kept and reused by
- ** the ethernet controller. If CallbackFunction is not NULL, the function
- ** will be called when the reset is complete. If the CallbackFunction is
- ** NULL,a 1 will be put into the ReturnAddr after waiting for the reset
- ** to complete (please disable I2O interrupts during this method).
- ** Any outstanding transmit or receive buffers that are complete will be
- ** returned via the normal reply messages before the requested resource
- ** buffers are returned.
- ** A call to RCPostRecvBuffers() is needed to return the ethernet to full
- ** operation if the receive buffers were returned during LANReset.
- ** Note: The IOP status is not affected by a LAN reset.
- */
-RC_RETURN RCResetLANCard (struct net_device *dev, U16 ResourceFlags,
- PU32 ReturnAddr, PFNCALLBACK CallbackFunction);
-
- /*
- ** RCShutdownLANCard()
- **
- ** Shutdown LAN card operation and put into an idle (suspended) state.
- ** The LAN card is restarted with RCResetLANCard() function.
- ** Depending on the ResourceFlags given, the buffers are either returned
- ** to the host with reply status of I2O_REPLY_STATUS_ABORT_NO_DATA_TRANSFER
- ** and detailed status of I2O_LAN_DSC_CANCELED (new receive buffers must be
- ** posted after issuing this) OR the buffers are kept and reused by
- ** the ethernet controller. If CallbackFunction is not NULL, the function
- ** will be called when the reset is complete. If the CallbackFunction is
- ** NULL,a 1 will be put into the ReturnAddr after waiting for the reset
- ** to complete (please disable I2O interrupts during this method).
- ** Any outstanding transmit or receive buffers that are complete will be
- ** returned via the normal reply messages before the requested resource
- ** buffers are returned.
- ** Note: The IOP status is not affected by a LAN shutdown.
- */
-RC_RETURN
-RCShutdownLANCard (struct net_device *dev, U16 ResourceFlags, PU32 ReturnAddr,
- PFNCALLBACK CallbackFunction);
-
- /*
- ** RCResetIOP();
- ** Initializes IOPState to I2O_IOP_STATE_RESET.
- ** Stops access to outbound message Q.
- ** Discards any outstanding transmit or posted receive buffers.
- ** Clears outbound message Q.
- */
-RC_RETURN RCResetIOP (struct net_device *dev);
-
-#endif /* RCLANMTL_H */
+++ /dev/null
-/*
-**
-** RCpci45.c
-**
-**
-**
-** ---------------------------------------------------------------------
-** --- Copyright (c) 1998, 1999, RedCreek Communications Inc. ---
-** --- All rights reserved. ---
-** ---------------------------------------------------------------------
-**
-** Written by Pete Popov and Brian Moyle.
-**
-** Known Problems
-**
-** None known at this time.
-**
-** This program is free software; you can redistribute it and/or modify
-** it under the terms of the GNU General Public License as published by
-** the Free Software Foundation; either version 2 of the License, or
-** (at your option) any later version.
-
-** This program is distributed in the hope that it will be useful,
-** but WITHOUT ANY WARRANTY; without even the implied warranty of
-** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-** GNU General Public License for more details.
-
-** You should have received a copy of the GNU General Public License
-** along with this program; if not, write to the Free Software
-** Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
-**
-** Francois Romieu, Apr 2003: Converted to pci DMA mapping API.
-**
-** Pete Popov, Oct 2001: Fixed a few bugs to make the driver functional
-** again. Note that this card is not supported or manufactured by
-** RedCreek anymore.
-**
-** Rasmus Andersen, December 2000: Converted to new PCI API and general
-** cleanup.
-**
-** Pete Popov, January 11,99: Fixed a couple of 2.1.x problems
-** (virt_to_bus() not called), tested it under 2.2pre5 (as a module), and
-** added a #define(s) to enable the use of the same file for both, the 2.0.x
-** kernels as well as the 2.1.x.
-**
-** Ported to 2.1.x by Alan Cox 1998/12/9.
-**
-** Sometime in mid 1998, written by Pete Popov and Brian Moyle.
-**
-***************************************************************************/
-
-#include <linux/module.h>
-#include <linux/kernel.h>
-#include <linux/string.h>
-#include <linux/errno.h>
-#include <linux/in.h>
-#include <linux/init.h>
-#include <linux/ioport.h>
-#include <linux/slab.h>
-#include <linux/interrupt.h>
-#include <linux/pci.h>
-#include <linux/timer.h>
-
-#include <asm/irq.h> /* For NR_IRQS only. */
-#include <asm/bitops.h>
-#include <asm/uaccess.h>
-
-static char version[] __initdata =
- "RedCreek Communications PCI linux driver version 2.21\n";
-
-#define RC_LINUX_MODULE
-#include "rclanmtl.h"
-#include "rcif.h"
-
-#define RUN_AT(x) (jiffies + (x))
-
-#define NEW_MULTICAST
-
-#define MAX_ETHER_SIZE 1520
-#define MAX_NMBR_RCV_BUFFERS 96
-#define RC_POSTED_BUFFERS_LOW_MARK MAX_NMBR_RCV_BUFFERS-16
-#define BD_SIZE 3 /* Bucket Descriptor size */
-#define BD_LEN_OFFSET 2 /* Bucket Descriptor offset to length field */
-
-/* RedCreek LAN device Target ID */
-#define RC_LAN_TARGET_ID 0x10
-/* RedCreek's OSM default LAN receive Initiator */
-#define DEFAULT_RECV_INIT_CONTEXT 0xA17
-
-/* minimum msg buffer size needed by the card
- * Note that the size of this buffer is hard code in the
- * ipsec card's firmware. Thus, the size MUST be a minimum
- * of 16K. Otherwise the card will end up using memory
- * that does not belong to it.
- */
-#define MSG_BUF_SIZE 16384
-
-/* 2003/04/20: I don't know about the hardware ability but the driver won't
- * play safe with 64 bit addressing and DAC without NETIF_F_HIGHDMA doesn't
- * really make sense anyway. Let's play safe - romieu.
- */
-#define RCPCI45_DMA_MASK ((u64) 0xffffffff)
-
-static U32 DriverControlWord;
-
-static void rc_timer (unsigned long);
-
-static int RCopen (struct net_device *);
-static int RC_xmit_packet (struct sk_buff *, struct net_device *);
-static irqreturn_t RCinterrupt (int, void *, struct pt_regs *);
-static int RCclose (struct net_device *dev);
-static struct net_device_stats *RCget_stats (struct net_device *);
-static int RCioctl (struct net_device *, struct ifreq *, int);
-static int RCconfig (struct net_device *, struct ifmap *);
-static void RCxmit_callback (U32, U16, PU32, struct net_device *);
-static void RCrecv_callback (U32, U8, U32, PU32, struct net_device *);
-static void RCreset_callback (U32, U32, U32, struct net_device *);
-static void RCreboot_callback (U32, U32, U32, struct net_device *);
-static int RC_allocate_and_post_buffers (struct net_device *, int);
-
-static struct pci_device_id rcpci45_pci_table[] = {
- { PCI_VENDOR_ID_REDCREEK, PCI_DEVICE_ID_RC45, PCI_ANY_ID, PCI_ANY_ID,},
- {}
-};
-MODULE_DEVICE_TABLE (pci, rcpci45_pci_table);
-MODULE_LICENSE("GPL");
-
-static void __devexit
-rcpci45_remove_one (struct pci_dev *pdev)
-{
- struct net_device *dev = pci_get_drvdata (pdev);
- PDPA pDpa = dev->priv;
-
- RCResetIOP (dev);
- unregister_netdev (dev);
- free_irq (dev->irq, dev);
- iounmap ((void *) dev->base_addr);
- pci_release_regions (pdev);
- pci_free_consistent (pdev, MSG_BUF_SIZE, pDpa->msgbuf,
- pDpa->msgbuf_dma);
- if (pDpa->pPab)
- kfree (pDpa->pPab);
- free_netdev (dev);
- pci_set_drvdata (pdev, NULL);
-}
-
-static int
-rcpci45_init_one (struct pci_dev *pdev, const struct pci_device_id *ent)
-{
- unsigned long *vaddr;
- PDPA pDpa;
- int error;
- static int card_idx = -1;
- struct net_device *dev;
- unsigned long pci_start, pci_len;
-
- card_idx++;
-
- /*
- * Allocate and fill new device structure.
- * We need enough for struct net_device plus DPA plus the LAN
- * API private area, which requires a minimum of 16KB. The top
- * of the allocated area will be assigned to struct net_device;
- * the next chunk will be assigned to DPA; and finally, the rest
- * will be assigned to the LAN API layer.
- */
-
- dev = alloc_etherdev(sizeof(*pDpa));
- if (!dev) {
- printk (KERN_ERR
- "(rcpci45 driver:) alloc_etherdev alloc failed\n");
- error = -ENOMEM;
- goto err_out;
- }
-
- SET_MODULE_OWNER(dev);
- SET_NETDEV_DEV(dev, &pdev->dev);
-
- error = pci_enable_device (pdev);
- if (error) {
- printk (KERN_ERR
- "(rcpci45 driver:) %d: pci enable device error\n",
- card_idx);
- goto err_out;
- }
- pci_start = pci_resource_start (pdev, 0);
- pci_len = pci_resource_len (pdev, 0);
- printk("pci_start %lx pci_len %lx\n", pci_start, pci_len);
-
- pci_set_drvdata (pdev, dev);
-
- pDpa = dev->priv;
- pDpa->id = card_idx;
- pDpa->pci_dev = pdev;
- pDpa->pci_addr = pci_start;
-
- if (!pci_start || !(pci_resource_flags (pdev, 0) & IORESOURCE_MEM)) {
- printk (KERN_ERR
- "(rcpci45 driver:) No PCI mem resources! Aborting\n");
- error = -EBUSY;
- goto err_out_free_dev;
- }
-
- /*
- * pDpa->msgbuf is where the card will dma the I2O
- * messages. Thus, we need contiguous physical pages of memory.
- * 2003/04/20: pci_alloc_consistent() provides well over the needed
- * alignment on a 256 bytes boundary for the LAN API private area.
- * Thus it isn't needed anymore to align it by hand.
- */
- pDpa->msgbuf = pci_alloc_consistent (pdev, MSG_BUF_SIZE,
- &pDpa->msgbuf_dma);
- if (!pDpa->msgbuf) {
- printk (KERN_ERR "(rcpci45 driver:) \
- Could not allocate %d byte memory for the \
- private msgbuf!\n", MSG_BUF_SIZE);
- error = -ENOMEM;
- goto err_out_free_dev;
- }
-
- /* The adapter is accessible through memory-access read/write, not
- * I/O read/write. Thus, we need to map it to some virtual address
- * area in order to access the registers as normal memory.
- */
- error = pci_request_regions (pdev, dev->name);
- if (error)
- goto err_out_free_msgbuf;
-
- error = pci_set_dma_mask (pdev, RCPCI45_DMA_MASK);
- if (error) {
- printk (KERN_ERR
- "(rcpci45 driver:) pci_set_dma_mask failed!\n");
- goto err_out_free_region;
- }
-
- vaddr = (ulong *) ioremap (pci_start, pci_len);
- if (!vaddr) {
- printk (KERN_ERR
- "(rcpci45 driver:) \
- Unable to remap address range from %lu to %lu\n",
- pci_start, pci_start + pci_len);
- error = -EIO;
- goto err_out_free_region;
- }
-
- dev->base_addr = (unsigned long) vaddr;
- dev->irq = pdev->irq;
- dev->open = &RCopen;
- dev->hard_start_xmit = &RC_xmit_packet;
- dev->stop = &RCclose;
- dev->get_stats = &RCget_stats;
- dev->do_ioctl = &RCioctl;
- dev->set_config = &RCconfig;
-
- if ((error = register_netdev(dev)))
- goto err_out_iounmap;
-
- return 0; /* success */
-
-err_out_iounmap:
- iounmap((void *) dev->base_addr);
-err_out_free_region:
- pci_release_regions (pdev);
-err_out_free_msgbuf:
- pci_free_consistent (pdev, MSG_BUF_SIZE, pDpa->msgbuf,
- pDpa->msgbuf_dma);
-err_out_free_dev:
- free_netdev (dev);
-err_out:
- card_idx--;
- return error;
-}
-
-static struct pci_driver rcpci45_driver = {
- .name = "rcpci45",
- .id_table = rcpci45_pci_table,
- .probe = rcpci45_init_one,
- .remove = __devexit_p(rcpci45_remove_one),
-};
-
-static int __init
-rcpci_init_module (void)
-{
- int rc = pci_module_init (&rcpci45_driver);
- if (!rc)
- printk (KERN_ERR "%s", version);
- return rc;
-}
-
-static int
-RCopen (struct net_device *dev)
-{
- int post_buffers = MAX_NMBR_RCV_BUFFERS;
- PDPA pDpa = dev->priv;
- int count = 0;
- int requested = 0;
- int error;
-
- if (pDpa->nexus) {
- /* This is not the first time RCopen is called. Thus,
- * the interface was previously opened and later closed
- * by RCclose(). RCclose() does a Shutdown; to wake up
- * the adapter, a reset is mandatory before we can post
- * receive buffers. However, if the adapter initiated
- * a reboot while the interface was closed -- and interrupts
- * were turned off -- we need will need to reinitialize
- * the adapter, rather than simply waking it up.
- */
- printk (KERN_INFO "Waking up adapter...\n");
- RCResetLANCard (dev, 0, 0, 0);
- } else {
- pDpa->nexus = 1;
- /*
- * RCInitI2OMsgLayer is done only once, unless the
- * adapter was sent a warm reboot
- */
- error = RCInitI2OMsgLayer (dev, (PFNTXCALLBACK) RCxmit_callback,
- (PFNRXCALLBACK) RCrecv_callback,
- (PFNCALLBACK) RCreboot_callback);
- if (error) {
- printk (KERN_ERR "%s: Unable to init msg layer (%x)\n",
- dev->name, error);
- goto err_out;
- }
- if ((error = RCGetMAC (dev, NULL))) {
- printk (KERN_ERR "%s: Unable to get adapter MAC\n",
- dev->name);
- goto err_out;
- }
- }
-
- /* Request a shared interrupt line. */
- error = request_irq (dev->irq, RCinterrupt, SA_SHIRQ, dev->name, dev);
- if (error) {
- printk (KERN_ERR "%s: unable to get IRQ %d\n",
- dev->name, dev->irq);
- goto err_out;
- }
-
- DriverControlWord |= WARM_REBOOT_CAPABLE;
- RCReportDriverCapability (dev, DriverControlWord);
-
- printk (KERN_INFO "%s: RedCreek Communications IPSEC VPN adapter\n",
- dev->name);
-
- RCEnableI2OInterrupts (dev);
-
- while (post_buffers) {
- if (post_buffers > MAX_NMBR_POST_BUFFERS_PER_MSG)
- requested = MAX_NMBR_POST_BUFFERS_PER_MSG;
- else
- requested = post_buffers;
- count = RC_allocate_and_post_buffers (dev, requested);
-
- if (count < requested) {
- /*
- * Check to see if we were able to post
- * any buffers at all.
- */
- if (post_buffers == MAX_NMBR_RCV_BUFFERS) {
- printk (KERN_ERR "%s: \
- unable to allocate any buffers\n",
- dev->name);
- goto err_out_free_irq;
- }
- printk (KERN_WARNING "%s: \
- unable to allocate all requested buffers\n", dev->name);
- break; /* we'll try to post more buffers later */
- } else
- post_buffers -= count;
- }
- pDpa->numOutRcvBuffers = MAX_NMBR_RCV_BUFFERS - post_buffers;
- pDpa->shutdown = 0; /* just in case */
- netif_start_queue (dev);
- return 0;
-
-err_out_free_irq:
- free_irq (dev->irq, dev);
-err_out:
- return error;
-}
-
-static int
-RC_xmit_packet (struct sk_buff *skb, struct net_device *dev)
-{
-
- PDPA pDpa = dev->priv;
- singleTCB tcb;
- psingleTCB ptcb = &tcb;
- RC_RETURN status = 0;
-
- netif_stop_queue (dev);
-
- if (pDpa->shutdown || pDpa->reboot) {
- printk ("RC_xmit_packet: tbusy!\n");
- return 1;
- }
-
- /*
- * The user is free to reuse the TCB after RCI2OSendPacket()
- * returns, since the function copies the necessary info into its
- * own private space. Thus, our TCB can be a local structure.
- * The skb, on the other hand, will be freed up in our interrupt
- * handler.
- */
-
- ptcb->bcount = 1;
-
- /*
- * we'll get the context when the adapter interrupts us to tell us that
- * the transmission is done. At that time, we can free skb.
- */
- ptcb->b.context = (U32) skb;
- ptcb->b.scount = 1;
- ptcb->b.size = skb->len;
- ptcb->b.addr = pci_map_single(pDpa->pci_dev, skb->data, skb->len,
- PCI_DMA_TODEVICE);
-
- if ((status = RCI2OSendPacket (dev, (U32) NULL, (PRCTCB) ptcb))
- != RC_RTN_NO_ERROR) {
- printk ("%s: send error 0x%x\n", dev->name, (uint) status);
- return 1;
- } else {
- dev->trans_start = jiffies;
- netif_wake_queue (dev);
- }
- /*
- * That's it!
- */
- return 0;
-}
-
-/*
- * RCxmit_callback()
- *
- * The transmit callback routine. It's called by RCProcI2OMsgQ()
- * because the adapter is done with one or more transmit buffers and
- * it's returning them to us, or we asked the adapter to return the
- * outstanding transmit buffers by calling RCResetLANCard() with
- * RC_RESOURCE_RETURN_PEND_TX_BUFFERS flag.
- * All we need to do is free the buffers.
- */
-static void
-RCxmit_callback (U32 Status,
- U16 PcktCount, PU32 BufferContext, struct net_device *dev)
-{
- struct sk_buff *skb;
- PDPA pDpa = dev->priv;
-
- if (!pDpa) {
- printk (KERN_ERR "%s: Fatal Error in xmit callback, !pDpa\n",
- dev->name);
- return;
- }
-
- if (Status != I2O_REPLY_STATUS_SUCCESS)
- printk (KERN_INFO "%s: xmit_callback: Status = 0x%x\n",
- dev->name, (uint) Status);
- if (pDpa->shutdown || pDpa->reboot)
- printk (KERN_INFO "%s: xmit callback: shutdown||reboot\n",
- dev->name);
-
- while (PcktCount--) {
- skb = (struct sk_buff *) (BufferContext[0]);
- BufferContext++;
- pci_unmap_single(pDpa->pci_dev, BufferContext[1], skb->len,
- PCI_DMA_TODEVICE);
- dev_kfree_skb_irq (skb);
- }
- netif_wake_queue (dev);
-}
-
-static void
-RCreset_callback (U32 Status, U32 p1, U32 p2, struct net_device *dev)
-{
- PDPA pDpa = dev->priv;
-
- printk ("RCreset_callback Status 0x%x\n", (uint) Status);
- /*
- * Check to see why we were called.
- */
- if (pDpa->shutdown) {
- printk (KERN_INFO "%s: shutting down interface\n",
- dev->name);
- pDpa->shutdown = 0;
- pDpa->reboot = 0;
- } else if (pDpa->reboot) {
- printk (KERN_INFO "%s: reboot, shutdown adapter\n",
- dev->name);
- /*
- * We don't set any of the flags in RCShutdownLANCard()
- * and we don't pass a callback routine to it.
- * The adapter will have already initiated the reboot by
- * the time the function returns.
- */
- RCDisableI2OInterrupts (dev);
- RCShutdownLANCard (dev, 0, 0, 0);
- printk (KERN_INFO "%s: scheduling timer...\n", dev->name);
- init_timer (&pDpa->timer);
- pDpa->timer.expires = RUN_AT ((40 * HZ) / 10); /* 4 sec. */
- pDpa->timer.data = (unsigned long) dev;
- pDpa->timer.function = &rc_timer; /* timer handler */
- add_timer (&pDpa->timer);
- }
-}
-
-static void
-RCreboot_callback (U32 Status, U32 p1, U32 p2, struct net_device *dev)
-{
- PDPA pDpa = dev->priv;
-
- printk (KERN_INFO "%s: reboot: rcv buffers outstanding = %d\n",
- dev->name, (uint) pDpa->numOutRcvBuffers);
-
- if (pDpa->shutdown) {
- printk (KERN_INFO "%s: skip reboot, shutdown initiated\n",
- dev->name);
- return;
- }
- pDpa->reboot = 1;
- /*
- * OK, we reset the adapter and ask it to return all
- * outstanding transmit buffers as well as the posted
- * receive buffers. When the adapter is done returning
- * those buffers, it will call our RCreset_callback()
- * routine. In that routine, we'll call RCShutdownLANCard()
- * to tell the adapter that it's OK to start the reboot and
- * schedule a timer callback routine to execute 3 seconds
- * later; this routine will reinitialize the adapter at that time.
- */
- RCResetLANCard (dev, RC_RESOURCE_RETURN_POSTED_RX_BUCKETS |
- RC_RESOURCE_RETURN_PEND_TX_BUFFERS, 0,
- (PFNCALLBACK) RCreset_callback);
-}
-
-/*
- * RCrecv_callback()
- *
- * The receive packet callback routine. This is called by
- * RCProcI2OMsgQ() after the adapter posts buffers which have been
- * filled (one ethernet packet per buffer).
- */
-static void
-RCrecv_callback (U32 Status,
- U8 PktCount,
- U32 BucketsRemain,
- PU32 PacketDescBlock, struct net_device *dev)
-{
-
- U32 len, count;
- PDPA pDpa = dev->priv;
- struct sk_buff *skb;
- singleTCB tcb;
- psingleTCB ptcb = &tcb;
-
- ptcb->bcount = 1;
-
- if ((pDpa->shutdown || pDpa->reboot) && !Status)
- printk (KERN_INFO "%s: shutdown||reboot && !Status (%d)\n",
- dev->name, PktCount);
-
- if ((Status != I2O_REPLY_STATUS_SUCCESS) || pDpa->shutdown) {
- /*
- * Free whatever buffers the adapter returned, but don't
- * pass them to the kernel.
- */
-
- if (!pDpa->shutdown && !pDpa->reboot)
- printk (KERN_INFO "%s: recv error status = 0x%x\n",
- dev->name, (uint) Status);
- else
- printk (KERN_DEBUG "%s: Returning %d buffs stat 0x%x\n",
- dev->name, PktCount, (uint) Status);
- /*
- * TO DO: check the nature of the failure and put the
- * adapter in failed mode if it's a hard failure.
- * Send a reset to the adapter and free all outstanding memory.
- */
- if (PacketDescBlock) {
- while (PktCount--) {
- skb = (struct sk_buff *) PacketDescBlock[0];
- dev_kfree_skb (skb);
- pDpa->numOutRcvBuffers--;
- /* point to next context field */
- PacketDescBlock += BD_SIZE;
- }
- }
- return;
- } else {
- while (PktCount--) {
- skb = (struct sk_buff *) PacketDescBlock[0];
- len = PacketDescBlock[2];
- skb->dev = dev;
- skb_put (skb, len); /* adjust length and tail */
- skb->protocol = eth_type_trans (skb, dev);
- netif_rx (skb); /* send the packet to the kernel */
- dev->last_rx = jiffies;
- pDpa->numOutRcvBuffers--;
- /* point to next context field */
- PacketDescBlock += BD_SIZE;
- }
- }
-
- /*
- * Replenish the posted receive buffers.
- * DO NOT replenish buffers if the driver has already
- * initiated a reboot or shutdown!
- */
-
- if (!pDpa->shutdown && !pDpa->reboot) {
- count = RC_allocate_and_post_buffers (dev,
- MAX_NMBR_RCV_BUFFERS -
- pDpa->numOutRcvBuffers);
- pDpa->numOutRcvBuffers += count;
- }
-
-}
-
-/*
- * RCinterrupt()
- *
- * Interrupt handler.
- * This routine sets up a couple of pointers and calls
- * RCProcI2OMsgQ(), which in turn process the message and
- * calls one of our callback functions.
- */
-static irqreturn_t
-RCinterrupt (int irq, void *dev_id, struct pt_regs *regs)
-{
-
- PDPA pDpa;
- struct net_device *dev = dev_id;
-
- pDpa = dev->priv;
-
- if (pDpa->shutdown)
- printk (KERN_DEBUG "%s: shutdown, service irq\n",
- dev->name);
-
- return RCProcI2OMsgQ (dev);
-}
-
-#define REBOOT_REINIT_RETRY_LIMIT 4
-static void
-rc_timer (unsigned long data)
-{
- struct net_device *dev = (struct net_device *) data;
- PDPA pDpa = dev->priv;
- int init_status;
- static int retry;
- int post_buffers = MAX_NMBR_RCV_BUFFERS;
- int count = 0;
- int requested = 0;
-
- if (pDpa->reboot) {
- init_status =
- RCInitI2OMsgLayer (dev, (PFNTXCALLBACK) RCxmit_callback,
- (PFNRXCALLBACK) RCrecv_callback,
- (PFNCALLBACK) RCreboot_callback);
-
- switch (init_status) {
- case RC_RTN_NO_ERROR:
-
- pDpa->reboot = 0;
- pDpa->shutdown = 0; /* just in case */
- RCReportDriverCapability (dev, DriverControlWord);
- RCEnableI2OInterrupts (dev);
-
-
- if (!(dev->flags & IFF_UP)) {
- retry = 0;
- return;
- }
- while (post_buffers) {
- if (post_buffers >
- MAX_NMBR_POST_BUFFERS_PER_MSG)
- requested =
- MAX_NMBR_POST_BUFFERS_PER_MSG;
- else
- requested = post_buffers;
- count =
- RC_allocate_and_post_buffers (dev,
- requested);
- post_buffers -= count;
- if (count < requested)
- break;
- }
- pDpa->numOutRcvBuffers =
- MAX_NMBR_RCV_BUFFERS - post_buffers;
- printk ("Initialization done.\n");
- netif_wake_queue (dev);
- retry = 0;
- return;
- case RC_RTN_FREE_Q_EMPTY:
- retry++;
- printk (KERN_WARNING "%s inbound free q empty\n",
- dev->name);
- break;
- default:
- retry++;
- printk (KERN_WARNING "%s bad stat after reboot: %d\n",
- dev->name, init_status);
- break;
- }
-
- if (retry > REBOOT_REINIT_RETRY_LIMIT) {
- printk (KERN_WARNING "%s unable to reinitialize adapter after reboot\n", dev->name);
- printk (KERN_WARNING "%s shutting down interface\n", dev->name);
- RCDisableI2OInterrupts (dev);
- dev->flags &= ~IFF_UP;
- } else {
- printk (KERN_INFO "%s: rescheduling timer...\n",
- dev->name);
- init_timer (&pDpa->timer);
- pDpa->timer.expires = RUN_AT ((40 * HZ) / 10);
- pDpa->timer.data = (unsigned long) dev;
- pDpa->timer.function = &rc_timer;
- add_timer (&pDpa->timer);
- }
- } else
- printk (KERN_WARNING "%s: unexpected timer irq\n", dev->name);
-}
-
-static int
-RCclose (struct net_device *dev)
-{
- PDPA pDpa = dev->priv;
-
- printk("RCclose\n");
- netif_stop_queue (dev);
-
- if (pDpa->reboot) {
- printk (KERN_INFO "%s skipping reset -- adapter already in reboot mode\n", dev->name);
- dev->flags &= ~IFF_UP;
- pDpa->shutdown = 1;
- return 0;
- }
-
- pDpa->shutdown = 1;
-
- /*
- * We can't allow the driver to be unloaded until the adapter returns
- * all posted receive buffers. It doesn't hurt to tell the adapter
- * to return all posted receive buffers and outstanding xmit buffers,
- * even if there are none.
- */
-
- RCShutdownLANCard (dev, RC_RESOURCE_RETURN_POSTED_RX_BUCKETS |
- RC_RESOURCE_RETURN_PEND_TX_BUFFERS, 0,
- (PFNCALLBACK) RCreset_callback);
-
- dev->flags &= ~IFF_UP;
- return 0;
-}
-
-static struct net_device_stats *
-RCget_stats (struct net_device *dev)
-{
- RCLINKSTATS RCstats;
-
- PDPA pDpa = dev->priv;
-
- if (!pDpa) {
- return 0;
- } else if (!(dev->flags & IFF_UP)) {
- return 0;
- }
-
- memset (&RCstats, 0, sizeof (RCLINKSTATS));
- if ((RCGetLinkStatistics (dev, &RCstats, (void *) 0)) ==
- RC_RTN_NO_ERROR) {
-
- /* total packets received */
- pDpa->stats.rx_packets = RCstats.Rcv_good
- /* total packets transmitted */;
- pDpa->stats.tx_packets = RCstats.TX_good;
-
- pDpa->stats.rx_errors = RCstats.Rcv_CRCerr +
- RCstats.Rcv_alignerr + RCstats.Rcv_reserr +
- RCstats.Rcv_orun + RCstats.Rcv_cdt + RCstats.Rcv_runt;
-
- pDpa->stats.tx_errors = RCstats.TX_urun + RCstats.TX_crs +
- RCstats.TX_def + RCstats.TX_totcol;
-
- /*
- * This needs improvement.
- */
- pDpa->stats.rx_dropped = 0; /* no space in linux buffers */
- pDpa->stats.tx_dropped = 0; /* no space available in linux */
- pDpa->stats.multicast = 0; /* multicast packets received */
- pDpa->stats.collisions = RCstats.TX_totcol;
-
- /* detailed rx_errors: */
- pDpa->stats.rx_length_errors = 0;
- pDpa->stats.rx_over_errors = RCstats.Rcv_orun;
- pDpa->stats.rx_crc_errors = RCstats.Rcv_CRCerr;
- pDpa->stats.rx_frame_errors = 0;
- pDpa->stats.rx_fifo_errors = 0;
- pDpa->stats.rx_missed_errors = 0;
-
- /* detailed tx_errors */
- pDpa->stats.tx_aborted_errors = 0;
- pDpa->stats.tx_carrier_errors = 0;
- pDpa->stats.tx_fifo_errors = 0;
- pDpa->stats.tx_heartbeat_errors = 0;
- pDpa->stats.tx_window_errors = 0;
-
- return ((struct net_device_stats *) &(pDpa->stats));
- }
- return 0;
-}
-
-static int
-RCioctl (struct net_device *dev, struct ifreq *rq, int cmd)
-{
- RCuser_struct RCuser;
- PDPA pDpa = dev->priv;
-
- if (!capable (CAP_NET_ADMIN))
- return -EPERM;
-
- switch (cmd) {
-
- case RCU_PROTOCOL_REV:
- /*
- * Assign user protocol revision, to tell user-level
- * controller program whether or not it's in sync.
- */
- rq->ifr_ifru.ifru_data = (caddr_t) USER_PROTOCOL_REV;
- break;
-
- case RCU_COMMAND:
- {
- if (copy_from_user
- (&RCuser, rq->ifr_data, sizeof (RCuser)))
- return -EFAULT;
-
- dprintk ("RCioctl: RCuser_cmd = 0x%x\n", RCuser.cmd);
-
- switch (RCuser.cmd) {
- case RCUC_GETFWVER:
- RCUD_GETFWVER = &RCuser.RCUS_GETFWVER;
- RCGetFirmwareVer (dev,
- (PU8) & RCUD_GETFWVER->
- FirmString, NULL);
- break;
- case RCUC_GETINFO:
- RCUD_GETINFO = &RCuser.RCUS_GETINFO;
- RCUD_GETINFO->mem_start = dev->base_addr;
- RCUD_GETINFO->mem_end =
- dev->base_addr + pDpa->pci_addr_len;
- RCUD_GETINFO->base_addr = pDpa->pci_addr;
- RCUD_GETINFO->irq = dev->irq;
- break;
- case RCUC_GETIPANDMASK:
- RCUD_GETIPANDMASK = &RCuser.RCUS_GETIPANDMASK;
- RCGetRavlinIPandMask (dev,
- (PU32) &
- RCUD_GETIPANDMASK->IpAddr,
- (PU32) &
- RCUD_GETIPANDMASK->
- NetMask, NULL);
- break;
- case RCUC_GETLINKSTATISTICS:
- RCUD_GETLINKSTATISTICS =
- &RCuser.RCUS_GETLINKSTATISTICS;
- RCGetLinkStatistics (dev,
- (P_RCLINKSTATS) &
- RCUD_GETLINKSTATISTICS->
- StatsReturn, NULL);
- break;
- case RCUC_GETLINKSTATUS:
- RCUD_GETLINKSTATUS = &RCuser.RCUS_GETLINKSTATUS;
- RCGetLinkStatus (dev,
- (PU32) & RCUD_GETLINKSTATUS->
- ReturnStatus, NULL);
- break;
- case RCUC_GETMAC:
- RCUD_GETMAC = &RCuser.RCUS_GETMAC;
- RCGetMAC (dev, NULL);
- memcpy(RCUD_GETMAC, dev->dev_addr, 8);
- break;
- case RCUC_GETPROM:
- RCUD_GETPROM = &RCuser.RCUS_GETPROM;
- RCGetPromiscuousMode (dev,
- (PU32) & RCUD_GETPROM->
- PromMode, NULL);
- break;
- case RCUC_GETBROADCAST:
- RCUD_GETBROADCAST = &RCuser.RCUS_GETBROADCAST;
- RCGetBroadcastMode (dev,
- (PU32) & RCUD_GETBROADCAST->
- BroadcastMode, NULL);
- break;
- case RCUC_GETSPEED:
- if (!(dev->flags & IFF_UP)) {
- return -ENODATA;
- }
- RCUD_GETSPEED = &RCuser.RCUS_GETSPEED;
- RCGetLinkSpeed (dev,
- (PU32) & RCUD_GETSPEED->
- LinkSpeedCode, NULL);
- break;
- case RCUC_SETIPANDMASK:
- RCUD_SETIPANDMASK = &RCuser.RCUS_SETIPANDMASK;
- RCSetRavlinIPandMask (dev,
- (U32) RCUD_SETIPANDMASK->
- IpAddr,
- (U32) RCUD_SETIPANDMASK->
- NetMask);
- break;
- case RCUC_SETMAC:
- RCSetMAC (dev, (PU8) & RCUD_SETMAC->mac);
- break;
- case RCUC_SETSPEED:
- RCUD_SETSPEED = &RCuser.RCUS_SETSPEED;
- RCSetLinkSpeed (dev,
- (U16) RCUD_SETSPEED->
- LinkSpeedCode);
- break;
- case RCUC_SETPROM:
- RCUD_SETPROM = &RCuser.RCUS_SETPROM;
- RCSetPromiscuousMode (dev,
- (U16) RCUD_SETPROM->
- PromMode);
- break;
- case RCUC_SETBROADCAST:
- RCUD_SETBROADCAST = &RCuser.RCUS_SETBROADCAST;
- RCSetBroadcastMode (dev,
- (U16) RCUD_SETBROADCAST->
- BroadcastMode);
- break;
- default:
- RCUD_DEFAULT = &RCuser.RCUS_DEFAULT;
- RCUD_DEFAULT->rc = 0x11223344;
- break;
- }
- if (copy_to_user (rq->ifr_data, &RCuser,
- sizeof (RCuser)))
- return -EFAULT;
- break;
- } /* RCU_COMMAND */
-
- default:
- rq->ifr_ifru.ifru_data = (caddr_t) 0x12345678;
- return -EINVAL;
- }
- return 0;
-}
-
-static int
-RCconfig (struct net_device *dev, struct ifmap *map)
-{
- /*
- * To be completed ...
- */
- return 0;
- if (dev->flags & IFF_UP) /* can't act on a running interface */
- return -EBUSY;
-
- /* Don't allow changing the I/O address */
- if (map->base_addr != dev->base_addr) {
- printk (KERN_WARNING "%s Change I/O address not implemented\n",
- dev->name);
- return -EOPNOTSUPP;
- }
- return 0;
-}
-
-static void __exit
-rcpci_cleanup_module (void)
-{
- pci_unregister_driver (&rcpci45_driver);
-}
-
-module_init (rcpci_init_module);
-module_exit (rcpci_cleanup_module);
-
-static int
-RC_allocate_and_post_buffers (struct net_device *dev, int numBuffers)
-{
-
- int i;
- PU32 p;
- psingleB pB;
- struct sk_buff *skb;
- PDPA pDpa = dev->priv;
- RC_RETURN status;
- U32 res = 0;
-
- if (!numBuffers)
- return 0;
- else if (numBuffers > MAX_NMBR_POST_BUFFERS_PER_MSG) {
- printk (KERN_ERR "%s: Too many buffers requested!\n",
- dev->name);
- numBuffers = 32;
- }
-
- p = (PU32) kmalloc (sizeof (U32) + numBuffers * sizeof (singleB),
- GFP_DMA | GFP_ATOMIC);
-
- if (!p) {
- printk (KERN_WARNING "%s unable to allocate TCB\n",
- dev->name);
- goto out;
- }
-
- p[0] = 0; /* Buffer Count */
- pB = (psingleB) ((U32) p + sizeof (U32));/* point to the first buffer */
-
- for (i = 0; i < numBuffers; i++) {
- skb = dev_alloc_skb (MAX_ETHER_SIZE + 2);
- if (!skb) {
- printk (KERN_WARNING
- "%s: unable to allocate enough skbs!\n",
- dev->name);
- goto err_out_unmap;
- }
- skb_reserve (skb, 2); /* Align IP on 16 byte boundaries */
- pB->context = (U32) skb;
- pB->scount = 1; /* segment count */
- pB->size = MAX_ETHER_SIZE;
- pB->addr = pci_map_single(pDpa->pci_dev, skb->data,
- MAX_ETHER_SIZE, PCI_DMA_FROMDEVICE);
- p[0]++;
- pB++;
- }
-
- if ((status = RCPostRecvBuffers (dev, (PRCTCB) p)) != RC_RTN_NO_ERROR) {
- printk (KERN_WARNING "%s: Post buffer failed, error 0x%x\n",
- dev->name, status);
- goto err_out_unmap;
- }
-out_free:
- res = p[0];
- kfree (p);
-out:
- return (res); /* return the number of posted buffers */
-
-err_out_unmap:
- for (; p[0] > 0; p[0]--) {
- --pB;
- skb = (struct sk_buff *) pB->context;
- pci_unmap_single(pDpa->pci_dev, pB->addr, MAX_ETHER_SIZE,
- PCI_DMA_FROMDEVICE);
- dev_kfree_skb (skb);
- }
- goto out_free;
-}
+++ /dev/null
-/*
- * Hardware-level driver for the COMX and HICOMX cards
- * for Linux kernel 2.2.X
- *
- * Original authors: Arpad Bakay <bakay.arpad@synergon.hu>,
- * Peter Bajan <bajan.peter@synergon.hu>,
- * Rewritten by: Tivadar Szemethy <tiv@itc.hu>
- * Currently maintained by: Gergely Madarasz <gorgo@itc.hu>
- *
- * Copyright (C) 1995-2000 ITConsult-Pro Co. <info@itc.hu>
- *
- * Contributors:
- * Arnaldo Carvalho de Melo <acme@conectiva.com.br> - 0.86
- * Daniele Bellucci <bellucda@tiscali.it> - 0.87
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- *
- * Version 0.80 (99/06/11):
- * - port back to kernel, add support builtin driver
- * - cleaned up the source code a bit
- *
- * Version 0.81 (99/06/22):
- * - cleaned up the board load functions, no more long reset
- * timeouts
- * - lower modem lines on close
- * - some interrupt handling fixes
- *
- * Version 0.82 (99/08/24):
- * - fix multiple board support
- *
- * Version 0.83 (99/11/30):
- * - interrupt handling and locking fixes during initalization
- * - really fix multiple board support
- *
- * Version 0.84 (99/12/02):
- * - some workarounds for problematic hardware/firmware
- *
- * Version 0.85 (00/01/14):
- * - some additional workarounds :/
- * - printk cleanups
- * Version 0.86 (00/08/15):
- * - resource release on failure at COMX_init
- *
- * Version 0.87 (03/07/09)
- * - audit copy_from_user in comxhw_write_proc
- */
-
-#define VERSION "0.87"
-
-#include <linux/module.h>
-#include <linux/types.h>
-#include <linux/netdevice.h>
-#include <linux/proc_fs.h>
-#include <linux/ioport.h>
-#include <linux/init.h>
-#include <linux/delay.h>
-
-#include <asm/uaccess.h>
-#include <asm/io.h>
-
-#include "comx.h"
-#include "comxhw.h"
-
-MODULE_AUTHOR("Gergely Madarasz <gorgo@itc.hu>, Tivadar Szemethy <tiv@itc.hu>, Arpad Bakay");
-MODULE_DESCRIPTION("Hardware-level driver for the COMX and HICOMX adapters\n");
-MODULE_LICENSE("GPL");
-
-#define COMX_readw(dev, offset) (readw(dev->mem_start + offset + \
- (unsigned int)(((struct comx_privdata *)\
- ((struct comx_channel *)dev->priv)->HW_privdata)->channel) \
- * COMX_CHANNEL_OFFSET))
-
-#define COMX_WRITE(dev, offset, value) (writew(value, dev->mem_start + offset \
- + (unsigned int)(((struct comx_privdata *) \
- ((struct comx_channel *)dev->priv)->HW_privdata)->channel) \
- * COMX_CHANNEL_OFFSET))
-
-#define COMX_CMD(dev, cmd) (COMX_WRITE(dev, OFF_A_L2_CMD, cmd))
-
-struct comx_firmware {
- int len;
- unsigned char *data;
-};
-
-struct comx_privdata {
- struct comx_firmware *firmware;
- u16 clock;
- char channel; // channel no.
- int memory_size;
- short io_extent;
- u_long histogram[5];
-};
-
-static struct net_device *memory_used[(COMX_MEM_MAX - COMX_MEM_MIN) / 0x10000];
-extern struct comx_hardware hicomx_hw;
-extern struct comx_hardware comx_hw;
-extern struct comx_hardware cmx_hw;
-
-static irqreturn_t COMX_interrupt(int irq, void *dev_id, struct pt_regs *regs);
-
-static void COMX_board_on(struct net_device *dev)
-{
- outb_p( (byte) (((dev->mem_start & 0xf0000) >> 16) |
- COMX_ENABLE_BOARD_IT | COMX_ENABLE_BOARD_MEM), dev->base_addr);
-}
-
-static void COMX_board_off(struct net_device *dev)
-{
- outb_p( (byte) (((dev->mem_start & 0xf0000) >> 16) |
- COMX_ENABLE_BOARD_IT), dev->base_addr);
-}
-
-static void HICOMX_board_on(struct net_device *dev)
-{
- outb_p( (byte) (((dev->mem_start & 0xf0000) >> 12) |
- HICOMX_ENABLE_BOARD_MEM), dev->base_addr);
-}
-
-static void HICOMX_board_off(struct net_device *dev)
-{
- outb_p( (byte) (((dev->mem_start & 0xf0000) >> 12) |
- HICOMX_DISABLE_BOARD_MEM), dev->base_addr);
-}
-
-static void COMX_set_clock(struct net_device *dev)
-{
- struct comx_channel *ch = dev->priv;
- struct comx_privdata *hw = ch->HW_privdata;
-
- COMX_WRITE(dev, OFF_A_L1_CLKINI, hw->clock);
-}
-
-static struct net_device *COMX_access_board(struct net_device *dev)
-{
- struct comx_channel *ch = dev->priv;
- struct net_device *ret;
- int mempos = (dev->mem_start - COMX_MEM_MIN) >> 16;
- unsigned long flags;
-
-
- save_flags(flags); cli();
-
- ret = memory_used[mempos];
-
- if(ret == dev) {
- goto out;
- }
-
- memory_used[mempos] = dev;
-
- if (!ch->twin || ret != ch->twin) {
- if (ret) ((struct comx_channel *)ret->priv)->HW_board_off(ret);
- ch->HW_board_on(dev);
- }
-out:
- restore_flags(flags);
- return ret;
-}
-
-static void COMX_release_board(struct net_device *dev, struct net_device *savep)
-{
- unsigned long flags;
- int mempos = (dev->mem_start - COMX_MEM_MIN) >> 16;
- struct comx_channel *ch = dev->priv;
-
- save_flags(flags); cli();
-
- if (memory_used[mempos] == savep) {
- goto out;
- }
-
- memory_used[mempos] = savep;
- if (!ch->twin || ch->twin != savep) {
- ch->HW_board_off(dev);
- if (savep) ((struct comx_channel*)savep->priv)->HW_board_on(savep);
- }
-out:
- restore_flags(flags);
-}
-
-static int COMX_txe(struct net_device *dev)
-{
- struct net_device *savep;
- struct comx_channel *ch = dev->priv;
- int rc = 0;
-
- savep = ch->HW_access_board(dev);
- if (COMX_readw(dev,OFF_A_L2_LINKUP) == LINKUP_READY) {
- rc = COMX_readw(dev,OFF_A_L2_TxEMPTY);
- }
- ch->HW_release_board(dev,savep);
- if(rc==0xffff) {
- printk(KERN_ERR "%s, OFF_A_L2_TxEMPTY is %d\n",dev->name, rc);
- }
- return rc;
-}
-
-static int COMX_send_packet(struct net_device *dev, struct sk_buff *skb)
-{
- struct net_device *savep;
- struct comx_channel *ch = dev->priv;
- struct comx_privdata *hw = ch->HW_privdata;
- int ret = FRAME_DROPPED;
- word tmp;
-
- savep = ch->HW_access_board(dev);
-
- if (ch->debug_flags & DEBUG_HW_TX) {
- comx_debug_bytes(dev, skb->data, skb->len,"COMX_send packet");
- }
-
- if (skb->len > COMX_MAX_TX_SIZE) {
- ret=FRAME_DROPPED;
- goto out;
- }
-
- tmp=COMX_readw(dev, OFF_A_L2_TxEMPTY);
- if ((ch->line_status & LINE_UP) && tmp==1) {
- int lensave = skb->len;
- int dest = COMX_readw(dev, OFF_A_L2_TxBUFP);
- word *data = (word *)skb->data;
-
- if(dest==0xffff) {
- printk(KERN_ERR "%s: OFF_A_L2_TxBUFP is %d\n", dev->name, dest);
- ret=FRAME_DROPPED;
- goto out;
- }
-
- writew((unsigned short)skb->len, dev->mem_start + dest);
- dest += 2;
- while (skb->len > 1) {
- writew(*data++, dev->mem_start + dest);
- dest += 2; skb->len -= 2;
- }
- if (skb->len == 1) {
- writew(*((byte *)data), dev->mem_start + dest);
- }
- writew(0, dev->mem_start + (int)hw->channel *
- COMX_CHANNEL_OFFSET + OFF_A_L2_TxEMPTY);
- ch->stats.tx_packets++;
- ch->stats.tx_bytes += lensave;
- ret = FRAME_ACCEPTED;
- } else {
- ch->stats.tx_dropped++;
- printk(KERN_INFO "%s: frame dropped\n",dev->name);
- if(tmp) {
- printk(KERN_ERR "%s: OFF_A_L2_TxEMPTY is %d\n",dev->name,tmp);
- }
- }
-
-out:
- ch->HW_release_board(dev, savep);
- dev_kfree_skb(skb);
- return ret;
-}
-
-static inline int comx_read_buffer(struct net_device *dev)
-{
- struct comx_channel *ch = dev->priv;
- word rbuf_offs;
- struct sk_buff *skb;
- word len;
- int i=0;
- word *writeptr;
-
- i = 0;
- rbuf_offs = COMX_readw(dev, OFF_A_L2_RxBUFP);
- if(rbuf_offs == 0xffff) {
- printk(KERN_ERR "%s: OFF_A_L2_RxBUFP is %d\n",dev->name,rbuf_offs);
- return 0;
- }
- len = readw(dev->mem_start + rbuf_offs);
- if(len > COMX_MAX_RX_SIZE) {
- printk(KERN_ERR "%s: packet length is %d\n",dev->name,len);
- return 0;
- }
- if ((skb = dev_alloc_skb(len + 16)) == NULL) {
- ch->stats.rx_dropped++;
- COMX_WRITE(dev, OFF_A_L2_DAV, 0);
- return 0;
- }
- rbuf_offs += 2;
- skb_reserve(skb, 16);
- skb_put(skb, len);
- skb->dev = dev;
- writeptr = (word *)skb->data;
- while (i < len) {
- *writeptr++ = readw(dev->mem_start + rbuf_offs);
- rbuf_offs += 2;
- i += 2;
- }
- COMX_WRITE(dev, OFF_A_L2_DAV, 0);
- ch->stats.rx_packets++;
- ch->stats.rx_bytes += len;
- if (ch->debug_flags & DEBUG_HW_RX) {
- comx_debug_skb(dev, skb, "COMX_interrupt receiving");
- }
- ch->LINE_rx(dev, skb);
- return 1;
-}
-
-static inline char comx_line_change(struct net_device *dev, char linestat)
-{
- struct comx_channel *ch=dev->priv;
- char idle=1;
-
-
- if (linestat & LINE_UP) { /* Vonal fol */
- if (ch->lineup_delay) {
- if (!test_and_set_bit(0, &ch->lineup_pending)) {
- ch->lineup_timer.function = comx_lineup_func;
- ch->lineup_timer.data = (unsigned long)dev;
- ch->lineup_timer.expires = jiffies +
- HZ*ch->lineup_delay;
- add_timer(&ch->lineup_timer);
- idle=0;
- }
- } else {
- idle=0;
- ch->LINE_status(dev, ch->line_status |= LINE_UP);
- }
- } else { /* Vonal le */
- idle=0;
- if (test_and_clear_bit(0, &ch->lineup_pending)) {
- del_timer(&ch->lineup_timer);
- } else {
- ch->line_status &= ~LINE_UP;
- if (ch->LINE_status) {
- ch->LINE_status(dev, ch->line_status);
- }
- }
- }
- return idle;
-}
-
-
-
-static irqreturn_t COMX_interrupt(int irq, void *dev_id, struct pt_regs *regs)
-{
- struct net_device *dev = dev_id;
- struct comx_channel *ch = dev->priv;
- struct comx_privdata *hw = ch->HW_privdata;
- struct net_device *interrupted;
- unsigned long jiffs;
- char idle = 0;
- int count = 0;
- word tmp;
-
- if (dev == NULL) {
- printk(KERN_ERR "COMX_interrupt: irq %d for unknown device\n", irq);
- return IRQ_NONE;
- }
-
- jiffs = jiffies;
-
- interrupted = ch->HW_access_board(dev);
-
- while (!idle && count < 5000) {
- char channel = 0;
- idle = 1;
-
- while (channel < 2) {
- char linestat = 0;
- char buffers_emptied = 0;
-
- if (channel == 1) {
- if (ch->twin) {
- dev = ch->twin;
- ch = dev->priv;
- hw = ch->HW_privdata;
- } else {
- break;
- }
- } else {
- COMX_WRITE(dev, OFF_A_L1_REPENA,
- COMX_readw(dev, OFF_A_L1_REPENA) & 0xFF00);
- }
- channel++;
-
- if ((ch->init_status & (HW_OPEN | LINE_OPEN)) !=
- (HW_OPEN | LINE_OPEN)) {
- continue;
- }
-
- /* Collect stats */
- tmp = COMX_readw(dev, OFF_A_L1_ABOREC);
- COMX_WRITE(dev, OFF_A_L1_ABOREC, 0);
- if(tmp==0xffff) {
- printk(KERN_ERR "%s: OFF_A_L1_ABOREC is %d\n",dev->name,tmp);
- break;
- } else {
- ch->stats.rx_missed_errors += (tmp >> 8) & 0xff;
- ch->stats.rx_over_errors += tmp & 0xff;
- }
- tmp = COMX_readw(dev, OFF_A_L1_CRCREC);
- COMX_WRITE(dev, OFF_A_L1_CRCREC, 0);
- if(tmp==0xffff) {
- printk(KERN_ERR "%s: OFF_A_L1_CRCREC is %d\n",dev->name,tmp);
- break;
- } else {
- ch->stats.rx_crc_errors += (tmp >> 8) & 0xff;
- ch->stats.rx_missed_errors += tmp & 0xff;
- }
-
- if ((ch->line_status & LINE_UP) && ch->LINE_rx) {
- tmp=COMX_readw(dev, OFF_A_L2_DAV);
- while (tmp==1) {
- idle=0;
- buffers_emptied+=comx_read_buffer(dev);
- tmp=COMX_readw(dev, OFF_A_L2_DAV);
- }
- if(tmp) {
- printk(KERN_ERR "%s: OFF_A_L2_DAV is %d\n", dev->name, tmp);
- break;
- }
- }
-
- tmp=COMX_readw(dev, OFF_A_L2_TxEMPTY);
- if (tmp==1 && ch->LINE_tx) {
- ch->LINE_tx(dev);
- }
- if(tmp==0xffff) {
- printk(KERN_ERR "%s: OFF_A_L2_TxEMPTY is %d\n", dev->name, tmp);
- break;
- }
-
- if (COMX_readw(dev, OFF_A_L1_PBUFOVR) >> 8) {
- linestat &= ~LINE_UP;
- } else {
- linestat |= LINE_UP;
- }
-
- if ((linestat & LINE_UP) != (ch->line_status & LINE_UP)) {
- ch->stats.tx_carrier_errors++;
- idle &= comx_line_change(dev,linestat);
- }
-
- hw->histogram[(int)buffers_emptied]++;
- }
- count++;
- }
-
- if(count==5000) {
- printk(KERN_WARNING "%s: interrupt stuck\n",dev->name);
- }
-
- ch->HW_release_board(dev, interrupted);
- return IRQ_HANDLED;
-}
-
-static int COMX_open(struct net_device *dev)
-{
- struct comx_channel *ch = dev->priv;
- struct comx_privdata *hw = ch->HW_privdata;
- struct proc_dir_entry *procfile = ch->procdir->subdir;
- unsigned long jiffs;
- int twin_open=0;
- int retval;
- struct net_device *savep;
-
- if (!dev->base_addr || !dev->irq || !dev->mem_start) {
- return -ENODEV;
- }
-
- if (ch->twin && (((struct comx_channel *)(ch->twin->priv))->init_status & HW_OPEN)) {
- twin_open=1;
- }
-
- if (!twin_open) {
- if (!request_region(dev->base_addr, hw->io_extent, dev->name)) {
- return -EAGAIN;
- }
- if (request_irq(dev->irq, COMX_interrupt, 0, dev->name,
- (void *)dev)) {
- printk(KERN_ERR "comx-hw-comx: unable to obtain irq %d\n", dev->irq);
- release_region(dev->base_addr, hw->io_extent);
- return -EAGAIN;
- }
- ch->init_status |= IRQ_ALLOCATED;
- if (!ch->HW_load_board || ch->HW_load_board(dev)) {
- ch->init_status &= ~IRQ_ALLOCATED;
- retval=-ENODEV;
- goto error;
- }
- }
-
- savep = ch->HW_access_board(dev);
- COMX_WRITE(dev, OFF_A_L2_LINKUP, 0);
-
- if (ch->HW_set_clock) {
- ch->HW_set_clock(dev);
- }
-
- COMX_CMD(dev, COMX_CMD_INIT);
- jiffs = jiffies;
- while (COMX_readw(dev, OFF_A_L2_LINKUP) != 1 && time_before(jiffies, jiffs + HZ)) {
- schedule_timeout(1);
- }
-
- if (time_after_eq(jiffies, jiffs + HZ)) {
- printk(KERN_ERR "%s: board timeout on INIT command\n", dev->name);
- ch->HW_release_board(dev, savep);
- retval=-EIO;
- goto error;
- }
- udelay(1000);
-
- COMX_CMD(dev, COMX_CMD_OPEN);
-
- jiffs = jiffies;
- while (COMX_readw(dev, OFF_A_L2_LINKUP) != 3 && time_before(jiffies, jiffs + HZ)) {
- schedule_timeout(1);
- }
-
- if (time_after_eq(jiffies, jiffs + HZ)) {
- printk(KERN_ERR "%s: board timeout on OPEN command\n", dev->name);
- ch->HW_release_board(dev, savep);
- retval=-EIO;
- goto error;
- }
-
- ch->init_status |= HW_OPEN;
-
- /* Ez eleg ciki, de ilyen a rendszer */
- if (COMX_readw(dev, OFF_A_L1_PBUFOVR) >> 8) {
- ch->line_status &= ~LINE_UP;
- } else {
- ch->line_status |= LINE_UP;
- }
-
- if (ch->LINE_status) {
- ch->LINE_status(dev, ch->line_status);
- }
-
- ch->HW_release_board(dev, savep);
-
- for ( ; procfile ; procfile = procfile->next) {
- if (strcmp(procfile->name, FILENAME_IRQ) == 0
- || strcmp(procfile->name, FILENAME_IO) == 0
- || strcmp(procfile->name, FILENAME_MEMADDR) == 0
- || strcmp(procfile->name, FILENAME_CHANNEL) == 0
- || strcmp(procfile->name, FILENAME_FIRMWARE) == 0
- || strcmp(procfile->name, FILENAME_CLOCK) == 0) {
- procfile->mode = S_IFREG | 0444;
-
- }
- }
-
- return 0;
-
-error:
- if(!twin_open) {
- release_region(dev->base_addr, hw->io_extent);
- free_irq(dev->irq, (void *)dev);
- }
- return retval;
-
-}
-
-static int COMX_close(struct net_device *dev)
-{
- struct comx_channel *ch = dev->priv;
- struct proc_dir_entry *procfile = ch->procdir->subdir;
- struct comx_privdata *hw = ch->HW_privdata;
- struct comx_channel *twin_ch;
- struct net_device *savep;
-
- savep = ch->HW_access_board(dev);
-
- COMX_CMD(dev, COMX_CMD_CLOSE);
- udelay(1000);
- COMX_CMD(dev, COMX_CMD_EXIT);
-
- ch->HW_release_board(dev, savep);
-
- if (ch->init_status & IRQ_ALLOCATED) {
- free_irq(dev->irq, (void *)dev);
- ch->init_status &= ~IRQ_ALLOCATED;
- }
- release_region(dev->base_addr, hw->io_extent);
-
- if (ch->twin && (twin_ch = ch->twin->priv) &&
- (twin_ch->init_status & HW_OPEN)) {
- /* Pass the irq to the twin */
- if (request_irq(dev->irq, COMX_interrupt, 0, ch->twin->name,
- (void *)ch->twin) == 0) {
- twin_ch->init_status |= IRQ_ALLOCATED;
- }
- }
-
- for ( ; procfile ; procfile = procfile->next) {
- if (strcmp(procfile->name, FILENAME_IRQ) == 0
- || strcmp(procfile->name, FILENAME_IO) == 0
- || strcmp(procfile->name, FILENAME_MEMADDR) == 0
- || strcmp(procfile->name, FILENAME_CHANNEL) == 0
- || strcmp(procfile->name, FILENAME_FIRMWARE) == 0
- || strcmp(procfile->name, FILENAME_CLOCK) == 0) {
- procfile->mode = S_IFREG | 0644;
- }
- }
-
- ch->init_status &= ~HW_OPEN;
- return 0;
-}
-
-static int COMX_statistics(struct net_device *dev, char *page)
-{
- struct comx_channel *ch = dev->priv;
- struct comx_privdata *hw = ch->HW_privdata;
- struct net_device *savep;
- int len = 0;
-
- savep = ch->HW_access_board(dev);
-
- len += sprintf(page + len, "Board data: %s %s %s %s\nPBUFOVR: %02x, "
- "MODSTAT: %02x, LINKUP: %02x, DAV: %02x\nRxBUFP: %02x, "
- "TxEMPTY: %02x, TxBUFP: %02x\n",
- (ch->init_status & HW_OPEN) ? "HW_OPEN" : "",
- (ch->init_status & LINE_OPEN) ? "LINE_OPEN" : "",
- (ch->init_status & FW_LOADED) ? "FW_LOADED" : "",
- (ch->init_status & IRQ_ALLOCATED) ? "IRQ_ALLOCATED" : "",
- COMX_readw(dev, OFF_A_L1_PBUFOVR) & 0xff,
- (COMX_readw(dev, OFF_A_L1_PBUFOVR) >> 8) & 0xff,
- COMX_readw(dev, OFF_A_L2_LINKUP) & 0xff,
- COMX_readw(dev, OFF_A_L2_DAV) & 0xff,
- COMX_readw(dev, OFF_A_L2_RxBUFP) & 0xff,
- COMX_readw(dev, OFF_A_L2_TxEMPTY) & 0xff,
- COMX_readw(dev, OFF_A_L2_TxBUFP) & 0xff);
-
- len += sprintf(page + len, "hist[0]: %8lu hist[1]: %8lu hist[2]: %8lu\n"
- "hist[3]: %8lu hist[4]: %8lu\n",hw->histogram[0],hw->histogram[1],
- hw->histogram[2],hw->histogram[3],hw->histogram[4]);
-
- ch->HW_release_board(dev, savep);
-
- return len;
-}
-
-static int COMX_load_board(struct net_device *dev)
-{
- struct comx_channel *ch = dev->priv;
- struct comx_privdata *hw = ch->HW_privdata;
- struct comx_firmware *fw = hw->firmware;
- word board_segment = dev->mem_start >> 16;
- int mempos = (dev->mem_start - COMX_MEM_MIN) >> 16;
- unsigned long flags;
- unsigned char id1, id2;
- struct net_device *saved;
- int retval;
- int loopcount;
- int len;
- byte *COMX_address;
-
- if (!fw || !fw->len) {
- struct comx_channel *twin_ch = ch->twin ? ch->twin->priv : NULL;
- struct comx_privdata *twin_hw;
-
- if (!twin_ch || !(twin_hw = twin_ch->HW_privdata)) {
- return -EAGAIN;
- }
-
- if (!(fw = twin_hw->firmware) || !fw->len) {
- return -EAGAIN;
- }
- }
-
- id1 = fw->data[OFF_FW_L1_ID];
- id2 = fw->data[OFF_FW_L1_ID + 1];
-
- if (id1 != FW_L1_ID_1 || id2 != FW_L1_ID_2_COMX) {
- printk(KERN_ERR "%s: incorrect firmware, load aborted\n",
- dev->name);
- return -EAGAIN;
- }
-
- printk(KERN_INFO "%s: Loading COMX Layer 1 firmware %s\n", dev->name,
- (char *)(fw->data + OFF_FW_L1_ID + 2));
-
- id1 = fw->data[OFF_FW_L2_ID];
- id2 = fw->data[OFF_FW_L2_ID + 1];
- if (id1 == FW_L2_ID_1 && (id2 == 0xc0 || id2 == 0xc1 || id2 == 0xc2)) {
- printk(KERN_INFO "with Layer 2 code %s\n",
- (char *)(fw->data + OFF_FW_L2_ID + 2));
- }
-
- outb_p(board_segment | COMX_BOARD_RESET, dev->base_addr);
- /* 10 usec should be enough here */
- udelay(100);
-
- save_flags(flags); cli();
- saved=memory_used[mempos];
- if(saved) {
- ((struct comx_channel *)saved->priv)->HW_board_off(saved);
- }
- memory_used[mempos]=dev;
-
- outb_p(board_segment | COMX_ENABLE_BOARD_MEM, dev->base_addr);
-
- writeb(0, dev->mem_start + COMX_JAIL_OFFSET);
-
- loopcount=0;
- while(loopcount++ < 10000 &&
- readb(dev->mem_start + COMX_JAIL_OFFSET) != COMX_JAIL_VALUE) {
- udelay(100);
- }
-
- if (readb(dev->mem_start + COMX_JAIL_OFFSET) != COMX_JAIL_VALUE) {
- printk(KERN_ERR "%s: Can't reset board, JAIL value is %02x\n",
- dev->name, readb(dev->mem_start + COMX_JAIL_OFFSET));
- retval=-ENODEV;
- goto out;
- }
-
- writeb(0x55, dev->mem_start + 0x18ff);
-
- loopcount=0;
- while(loopcount++ < 10000 && readb(dev->mem_start + 0x18ff) != 0) {
- udelay(100);
- }
-
- if(readb(dev->mem_start + 0x18ff) != 0) {
- printk(KERN_ERR "%s: Can't reset board, reset timeout\n",
- dev->name);
- retval=-ENODEV;
- goto out;
- }
-
- len = 0;
- COMX_address = (byte *)dev->mem_start;
- while (fw->len > len) {
- writeb(fw->data[len++], COMX_address++);
- }
-
- len = 0;
- COMX_address = (byte *)dev->mem_start;
- while (len != fw->len && readb(COMX_address++) == fw->data[len]) {
- len++;
- }
-
- if (len != fw->len) {
- printk(KERN_ERR "%s: error loading firmware: [%d] is 0x%02x "
- "instead of 0x%02x\n", dev->name, len,
- readb(COMX_address - 1), fw->data[len]);
- retval=-EAGAIN;
- goto out;
- }
-
- writeb(0, dev->mem_start + COMX_JAIL_OFFSET);
-
- loopcount = 0;
- while ( loopcount++ < 10000 && COMX_readw(dev, OFF_A_L2_LINKUP) != 1 ) {
- udelay(100);
- }
-
- if (COMX_readw(dev, OFF_A_L2_LINKUP) != 1) {
- printk(KERN_ERR "%s: error starting firmware, linkup word is %04x\n",
- dev->name, COMX_readw(dev, OFF_A_L2_LINKUP));
- retval=-EAGAIN;
- goto out;
- }
-
-
- ch->init_status |= FW_LOADED;
- retval=0;
-
-out:
- outb_p(board_segment | COMX_DISABLE_ALL, dev->base_addr);
- if(saved) {
- ((struct comx_channel *)saved->priv)->HW_board_on(saved);
- }
- memory_used[mempos]=saved;
- restore_flags(flags);
- return retval;
-}
-
-static int CMX_load_board(struct net_device *dev)
-{
- struct comx_channel *ch = dev->priv;
- struct comx_privdata *hw = ch->HW_privdata;
- struct comx_firmware *fw = hw->firmware;
- word board_segment = dev->mem_start >> 16;
- int mempos = (dev->mem_start - COMX_MEM_MIN) >> 16;
- #if 0
- unsigned char id1, id2;
- #endif
- struct net_device *saved;
- unsigned long flags;
- int retval;
- int loopcount;
- int len;
- byte *COMX_address;
-
- if (!fw || !fw->len) {
- struct comx_channel *twin_ch = ch->twin ? ch->twin->priv : NULL;
- struct comx_privdata *twin_hw;
-
- if (!twin_ch || !(twin_hw = twin_ch->HW_privdata)) {
- return -EAGAIN;
- }
-
- if (!(fw = twin_hw->firmware) || !fw->len) {
- return -EAGAIN;
- }
- }
-
- /* Ide kell olyat tenni, hogy ellenorizze az ID-t */
-
- if (inb_p(dev->base_addr) != CMX_ID_BYTE) {
- printk(KERN_ERR "%s: CMX id byte is invalid(%02x)\n", dev->name,
- inb_p(dev->base_addr));
- return -ENODEV;
- }
-
- printk(KERN_INFO "%s: Loading CMX Layer 1 firmware %s\n", dev->name,
- (char *)(fw->data + OFF_FW_L1_ID + 2));
-
- save_flags(flags); cli();
- saved=memory_used[mempos];
- if(saved) {
- ((struct comx_channel *)saved->priv)->HW_board_off(saved);
- }
- memory_used[mempos]=dev;
-
- outb_p(board_segment | COMX_ENABLE_BOARD_MEM | COMX_BOARD_RESET,
- dev->base_addr);
-
- len = 0;
- COMX_address = (byte *)dev->mem_start;
- while (fw->len > len) {
- writeb(fw->data[len++], COMX_address++);
- }
-
- len = 0;
- COMX_address = (byte *)dev->mem_start;
- while (len != fw->len && readb(COMX_address++) == fw->data[len]) {
- len++;
- }
-
- outb_p(board_segment | COMX_ENABLE_BOARD_MEM, dev->base_addr);
-
- if (len != fw->len) {
- printk(KERN_ERR "%s: error loading firmware: [%d] is 0x%02x "
- "instead of 0x%02x\n", dev->name, len,
- readb(COMX_address - 1), fw->data[len]);
- retval=-EAGAIN;
- goto out;
- }
-
- loopcount=0;
- while( loopcount++ < 10000 && COMX_readw(dev, OFF_A_L2_LINKUP) != 1 ) {
- udelay(100);
- }
-
- if (COMX_readw(dev, OFF_A_L2_LINKUP) != 1) {
- printk(KERN_ERR "%s: error starting firmware, linkup word is %04x\n",
- dev->name, COMX_readw(dev, OFF_A_L2_LINKUP));
- retval=-EAGAIN;
- goto out;
- }
-
- ch->init_status |= FW_LOADED;
- retval=0;
-
-out:
- outb_p(board_segment | COMX_DISABLE_ALL, dev->base_addr);
- if(saved) {
- ((struct comx_channel *)saved->priv)->HW_board_on(saved);
- }
- memory_used[mempos]=saved;
- restore_flags(flags);
- return retval;
-}
-
-static int HICOMX_load_board(struct net_device *dev)
-{
- struct comx_channel *ch = dev->priv;
- struct comx_privdata *hw = ch->HW_privdata;
- struct comx_firmware *fw = hw->firmware;
- word board_segment = dev->mem_start >> 12;
- int mempos = (dev->mem_start - COMX_MEM_MIN) >> 16;
- struct net_device *saved;
- unsigned char id1, id2;
- unsigned long flags;
- int retval;
- int loopcount;
- int len;
- word *HICOMX_address;
- char id = 1;
-
- if (!fw || !fw->len) {
- struct comx_channel *twin_ch = ch->twin ? ch->twin->priv : NULL;
- struct comx_privdata *twin_hw;
-
- if (!twin_ch || !(twin_hw = twin_ch->HW_privdata)) {
- return -EAGAIN;
- }
-
- if (!(fw = twin_hw->firmware) || !fw->len) {
- return -EAGAIN;
- }
- }
-
- while (id != 4) {
- if (inb_p(dev->base_addr + id++) != HICOMX_ID_BYTE) {
- break;
- }
- }
-
- if (id != 4) {
- printk(KERN_ERR "%s: can't find HICOMX at 0x%04x, id[%d] = %02x\n",
- dev->name, (unsigned int)dev->base_addr, id - 1,
- inb_p(dev->base_addr + id - 1));
- return -1;
- }
-
- id1 = fw->data[OFF_FW_L1_ID];
- id2 = fw->data[OFF_FW_L1_ID + 1];
- if (id1 != FW_L1_ID_1 || id2 != FW_L1_ID_2_HICOMX) {
- printk(KERN_ERR "%s: incorrect firmware, load aborted\n", dev->name);
- return -EAGAIN;
- }
-
- printk(KERN_INFO "%s: Loading HICOMX Layer 1 firmware %s\n", dev->name,
- (char *)(fw->data + OFF_FW_L1_ID + 2));
-
- id1 = fw->data[OFF_FW_L2_ID];
- id2 = fw->data[OFF_FW_L2_ID + 1];
- if (id1 == FW_L2_ID_1 && (id2 == 0xc0 || id2 == 0xc1 || id2 == 0xc2)) {
- printk(KERN_INFO "with Layer 2 code %s\n",
- (char *)(fw->data + OFF_FW_L2_ID + 2));
- }
-
- outb_p(board_segment | HICOMX_BOARD_RESET, dev->base_addr);
- udelay(10);
-
- save_flags(flags); cli();
- saved=memory_used[mempos];
- if(saved) {
- ((struct comx_channel *)saved->priv)->HW_board_off(saved);
- }
- memory_used[mempos]=dev;
-
- outb_p(board_segment | HICOMX_ENABLE_BOARD_MEM, dev->base_addr);
- outb_p(HICOMX_PRG_MEM, dev->base_addr + 1);
-
- len = 0;
- HICOMX_address = (word *)dev->mem_start;
- while (fw->len > len) {
- writeb(fw->data[len++], HICOMX_address++);
- }
-
- len = 0;
- HICOMX_address = (word *)dev->mem_start;
- while (len != fw->len && (readw(HICOMX_address++) & 0xff) == fw->data[len]) {
- len++;
- }
-
- if (len != fw->len) {
- printk(KERN_ERR "%s: error loading firmware: [%d] is 0x%02x "
- "instead of 0x%02x\n", dev->name, len,
- readw(HICOMX_address - 1) & 0xff, fw->data[len]);
- retval=-EAGAIN;
- goto out;
- }
-
- outb_p(board_segment | HICOMX_BOARD_RESET, dev->base_addr);
- outb_p(HICOMX_DATA_MEM, dev->base_addr + 1);
-
- outb_p(board_segment | HICOMX_ENABLE_BOARD_MEM, dev->base_addr);
-
- loopcount=0;
- while(loopcount++ < 10000 && COMX_readw(dev, OFF_A_L2_LINKUP) != 1) {
- udelay(100);
- }
-
- if ( COMX_readw(dev, OFF_A_L2_LINKUP) != 1 ) {
- printk(KERN_ERR "%s: error starting firmware, linkup word is %04x\n",
- dev->name, COMX_readw(dev, OFF_A_L2_LINKUP));
- retval=-EAGAIN;
- goto out;
- }
-
- ch->init_status |= FW_LOADED;
- retval=0;
-
-out:
- outb_p(board_segment | HICOMX_DISABLE_ALL, dev->base_addr);
- outb_p(HICOMX_DATA_MEM, dev->base_addr + 1);
-
- if(saved) {
- ((struct comx_channel *)saved->priv)->HW_board_on(saved);
- }
- memory_used[mempos]=saved;
- restore_flags(flags);
- return retval;
-}
-
-static struct net_device *comx_twin_check(struct net_device *dev)
-{
- struct comx_channel *ch = dev->priv;
- struct proc_dir_entry *procfile = ch->procdir->parent->subdir;
- struct comx_privdata *hw = ch->HW_privdata;
-
- struct net_device *twin;
- struct comx_channel *ch_twin;
- struct comx_privdata *hw_twin;
-
-
- for ( ; procfile ; procfile = procfile->next) {
-
- if(!S_ISDIR(procfile->mode)) {
- continue;
- }
-
- twin=procfile->data;
- ch_twin=twin->priv;
- hw_twin=ch_twin->HW_privdata;
-
-
- if (twin != dev && dev->irq && dev->base_addr && dev->mem_start &&
- dev->irq == twin->irq && dev->base_addr == twin->base_addr &&
- dev->mem_start == twin->mem_start &&
- hw->channel == (1 - hw_twin->channel) &&
- ch->hardware == ch_twin->hardware) {
- return twin;
- }
- }
- return NULL;
-}
-
-static int comxhw_write_proc(struct file *file, const char *buffer,
- u_long count, void *data)
-{
- struct proc_dir_entry *entry = (struct proc_dir_entry *)data;
- struct net_device *dev = entry->parent->data;
- struct comx_channel *ch = dev->priv;
- struct comx_privdata *hw = ch->HW_privdata;
- char *page;
-
-
- if(ch->init_status & HW_OPEN) {
- return -EAGAIN;
- }
-
- if (strcmp(FILENAME_FIRMWARE, entry->name) != 0) {
- if (!(page = (char *)__get_free_page(GFP_KERNEL))) {
- return -ENOMEM;
- }
- if(copy_from_user(page, buffer, count = (min_t(int, count, PAGE_SIZE))))
- {
- count = -EFAULT;
- goto out;
- }
- if (page[count-1] == '\n')
- page[count-1] = '\0';
- else if (count < PAGE_SIZE)
- page[count] = '\0';
- else if (page[count]) {
- count = -EINVAL;
- goto out;
- }
- page[count]=0; /* Null terminate */
- } else {
- byte *tmp;
-
- if (!hw->firmware) {
- if ((hw->firmware = kmalloc(sizeof(struct comx_firmware),
- GFP_KERNEL)) == NULL) {
- return -ENOMEM;
- }
- hw->firmware->len = 0;
- hw->firmware->data = NULL;
- }
-
- if ((tmp = kmalloc(count + file->f_pos, GFP_KERNEL)) == NULL) {
- return -ENOMEM;
- }
-
- /* Ha nem 0 a fpos, akkor meglevo file-t irunk. Gyenge trukk. */
- if (hw->firmware && hw->firmware->len && file->f_pos
- && hw->firmware->len < count + file->f_pos) {
- memcpy(tmp, hw->firmware->data, hw->firmware->len);
- }
- if (hw->firmware->data) {
- kfree(hw->firmware->data);
- }
- if (copy_from_user(tmp + file->f_pos, buffer, count))
- return -EFAULT;
- hw->firmware->len = entry->size = file->f_pos + count;
- hw->firmware->data = tmp;
- file->f_pos += count;
- return count;
- }
-
- if (strcmp(entry->name, FILENAME_CHANNEL) == 0) {
- hw->channel = simple_strtoul(page, NULL, 0);
- if (hw->channel >= MAX_CHANNELNO) {
- printk(KERN_ERR "Invalid channel number\n");
- hw->channel = 0;
- }
- if ((ch->twin = comx_twin_check(dev)) != NULL) {
- struct comx_channel *twin_ch = ch->twin->priv;
- twin_ch->twin = dev;
- }
- } else if (strcmp(entry->name, FILENAME_IRQ) == 0) {
- dev->irq = simple_strtoul(page, NULL, 0);
- if (dev->irq == 2) {
- dev->irq = 9;
- }
- if (dev->irq < 3 || dev->irq > 15) {
- printk(KERN_ERR "comxhw: Invalid irq number\n");
- dev->irq = 0;
- }
- if ((ch->twin = comx_twin_check(dev)) != NULL) {
- struct comx_channel *twin_ch = ch->twin->priv;
- twin_ch->twin = dev;
- }
- } else if (strcmp(entry->name, FILENAME_IO) == 0) {
- dev->base_addr = simple_strtoul(page, NULL, 0);
- if ((dev->base_addr & 3) != 0 || dev->base_addr < 0x300
- || dev->base_addr > 0x3fc) {
- printk(KERN_ERR "Invalid io value\n");
- dev->base_addr = 0;
- }
- if ((ch->twin = comx_twin_check(dev)) != NULL) {
- struct comx_channel *twin_ch = ch->twin->priv;
-
- twin_ch->twin = dev;
- }
- } else if (strcmp(entry->name, FILENAME_MEMADDR) == 0) {
- dev->mem_start = simple_strtoul(page, NULL, 0);
- if (dev->mem_start <= 0xf000 && dev->mem_start >= 0xa000) {
- dev->mem_start *= 16;
- }
- if ((dev->mem_start & 0xfff) != 0 || dev->mem_start < COMX_MEM_MIN
- || dev->mem_start + hw->memory_size > COMX_MEM_MAX) {
- printk(KERN_ERR "Invalid memory page\n");
- dev->mem_start = 0;
- }
- dev->mem_end = dev->mem_start + hw->memory_size;
- if ((ch->twin = comx_twin_check(dev)) != NULL) {
- struct comx_channel *twin_ch = ch->twin->priv;
-
- twin_ch->twin = dev;
- }
- } else if (strcmp(entry->name, FILENAME_CLOCK) == 0) {
- if (strncmp("ext", page, 3) == 0) {
- hw->clock = 0;
- } else {
- int kbps;
-
- kbps = simple_strtoul(page, NULL, 0);
- hw->clock = kbps ? COMX_CLOCK_CONST/kbps : 0;
- }
- }
-out:
- free_page((unsigned long)page);
- return count;
-}
-
-static int comxhw_read_proc(char *page, char **start, off_t off, int count,
- int *eof, void *data)
-{
- struct proc_dir_entry *file = (struct proc_dir_entry *)data;
- struct net_device *dev = file->parent->data;
- struct comx_channel *ch = dev->priv;
- struct comx_privdata *hw = ch->HW_privdata;
- int len = 0;
-
-
- if (strcmp(file->name, FILENAME_IO) == 0) {
- len = sprintf(page, "0x%03x\n", (unsigned int)dev->base_addr);
- } else if (strcmp(file->name, FILENAME_IRQ) == 0) {
- len = sprintf(page, "0x%02x\n", dev->irq == 9 ? 2 : dev->irq);
- } else if (strcmp(file->name, FILENAME_CHANNEL) == 0) {
- len = sprintf(page, "%01d\n", hw->channel);
- } else if (strcmp(file->name, FILENAME_MEMADDR) == 0) {
- len = sprintf(page, "0x%05x\n", (unsigned int)dev->mem_start);
- } else if (strcmp(file->name, FILENAME_TWIN) == 0) {
- len = sprintf(page, "%s\n", ch->twin ? ch->twin->name : "none");
- } else if (strcmp(file->name, FILENAME_CLOCK) == 0) {
- if (hw->clock) {
- len = sprintf(page, "%-8d\n", COMX_CLOCK_CONST/hw->clock);
- } else {
- len = sprintf(page, "external\n");
- }
- } else if (strcmp(file->name, FILENAME_FIRMWARE) == 0) {
- len = min_t(int, FILE_PAGESIZE,
- min_t(int, count,
- hw->firmware ?
- (hw->firmware->len - off) : 0));
- if (len < 0) {
- len = 0;
- }
- *start = hw->firmware ? (hw->firmware->data + off) : NULL;
- if (off + len >= (hw->firmware ? hw->firmware->len : 0) || len == 0) {
- *eof = 1;
- }
- return len;
- }
-
- if (off >= len) {
- *eof = 1;
- return 0;
- }
-
- *start = page + off;
- if (count >= len - off) {
- *eof = 1;
- }
- return min_t(int, count, len - off);
-}
-
-/* Called on echo comx >boardtype */
-static int COMX_init(struct net_device *dev)
-{
- struct comx_channel *ch = dev->priv;
- struct comx_privdata *hw;
- struct proc_dir_entry *new_file;
-
- if ((ch->HW_privdata = kmalloc(sizeof(struct comx_privdata),
- GFP_KERNEL)) == NULL) {
- return -ENOMEM;
- }
- memset(hw = ch->HW_privdata, 0, sizeof(struct comx_privdata));
-
- if (ch->hardware == &comx_hw || ch->hardware == &cmx_hw) {
- hw->memory_size = COMX_MEMORY_SIZE;
- hw->io_extent = COMX_IO_EXTENT;
- dev->base_addr = COMX_DEFAULT_IO;
- dev->irq = COMX_DEFAULT_IRQ;
- dev->mem_start = COMX_DEFAULT_MEMADDR;
- dev->mem_end = COMX_DEFAULT_MEMADDR + COMX_MEMORY_SIZE;
- } else if (ch->hardware == &hicomx_hw) {
- hw->memory_size = HICOMX_MEMORY_SIZE;
- hw->io_extent = HICOMX_IO_EXTENT;
- dev->base_addr = HICOMX_DEFAULT_IO;
- dev->irq = HICOMX_DEFAULT_IRQ;
- dev->mem_start = HICOMX_DEFAULT_MEMADDR;
- dev->mem_end = HICOMX_DEFAULT_MEMADDR + HICOMX_MEMORY_SIZE;
- } else {
- printk(KERN_ERR "SERIOUS INTERNAL ERROR in %s, line %d\n", __FILE__, __LINE__);
- }
-
- if ((new_file = create_proc_entry(FILENAME_IO, S_IFREG | 0644, ch->procdir))
- == NULL) {
- goto cleanup_HW_privdata;
- }
- new_file->data = (void *)new_file;
- new_file->read_proc = &comxhw_read_proc;
- new_file->write_proc = &comxhw_write_proc;
- new_file->size = 6;
- new_file->nlink = 1;
-
- if ((new_file = create_proc_entry(FILENAME_IRQ, S_IFREG | 0644, ch->procdir))
- == NULL) {
- goto cleanup_filename_io;
- }
- new_file->data = (void *)new_file;
- new_file->read_proc = &comxhw_read_proc;
- new_file->write_proc = &comxhw_write_proc;
- new_file->size = 5;
- new_file->nlink = 1;
-
- if ((new_file = create_proc_entry(FILENAME_CHANNEL, S_IFREG | 0644,
- ch->procdir)) == NULL) {
- goto cleanup_filename_irq;
- }
- new_file->data = (void *)new_file;
- new_file->read_proc = &comxhw_read_proc;
- new_file->write_proc = &comxhw_write_proc;
- new_file->size = 2; // Ezt tudjuk
- new_file->nlink = 1;
-
- if (ch->hardware == &hicomx_hw || ch->hardware == &cmx_hw) {
- if ((new_file = create_proc_entry(FILENAME_CLOCK, S_IFREG | 0644,
- ch->procdir)) == NULL) {
- goto cleanup_filename_channel;
- }
- new_file->data = (void *)new_file;
- new_file->read_proc = &comxhw_read_proc;
- new_file->write_proc = &comxhw_write_proc;
- new_file->size = 9;
- new_file->nlink = 1;
- }
-
- if ((new_file = create_proc_entry(FILENAME_MEMADDR, S_IFREG | 0644,
- ch->procdir)) == NULL) {
- goto cleanup_filename_clock;
- }
- new_file->data = (void *)new_file;
- new_file->read_proc = &comxhw_read_proc;
- new_file->write_proc = &comxhw_write_proc;
- new_file->size = 8;
- new_file->nlink = 1;
-
- if ((new_file = create_proc_entry(FILENAME_TWIN, S_IFREG | 0444,
- ch->procdir)) == NULL) {
- goto cleanup_filename_memaddr;
- }
- new_file->data = (void *)new_file;
- new_file->read_proc = &comxhw_read_proc;
- new_file->write_proc = NULL;
- new_file->nlink = 1;
-
- if ((new_file = create_proc_entry(FILENAME_FIRMWARE, S_IFREG | 0644,
- ch->procdir)) == NULL) {
- goto cleanup_filename_twin;
- }
- new_file->data = (void *)new_file;
- new_file->read_proc = &comxhw_read_proc;
- new_file->write_proc = &comxhw_write_proc;
- new_file->nlink = 1;
-
- if (ch->hardware == &comx_hw) {
- ch->HW_board_on = COMX_board_on;
- ch->HW_board_off = COMX_board_off;
- ch->HW_load_board = COMX_load_board;
- } else if (ch->hardware == &cmx_hw) {
- ch->HW_board_on = COMX_board_on;
- ch->HW_board_off = COMX_board_off;
- ch->HW_load_board = CMX_load_board;
- ch->HW_set_clock = COMX_set_clock;
- } else if (ch->hardware == &hicomx_hw) {
- ch->HW_board_on = HICOMX_board_on;
- ch->HW_board_off = HICOMX_board_off;
- ch->HW_load_board = HICOMX_load_board;
- ch->HW_set_clock = COMX_set_clock;
- } else {
- printk(KERN_ERR "SERIOUS INTERNAL ERROR in %s, line %d\n", __FILE__, __LINE__);
- }
-
- ch->HW_access_board = COMX_access_board;
- ch->HW_release_board = COMX_release_board;
- ch->HW_txe = COMX_txe;
- ch->HW_open = COMX_open;
- ch->HW_close = COMX_close;
- ch->HW_send_packet = COMX_send_packet;
- ch->HW_statistics = COMX_statistics;
-
- if ((ch->twin = comx_twin_check(dev)) != NULL) {
- struct comx_channel *twin_ch = ch->twin->priv;
-
- twin_ch->twin = dev;
- }
-
- MOD_INC_USE_COUNT;
- return 0;
-
-cleanup_filename_twin:
- remove_proc_entry(FILENAME_TWIN, ch->procdir);
-cleanup_filename_memaddr:
- remove_proc_entry(FILENAME_MEMADDR, ch->procdir);
-cleanup_filename_clock:
- if (ch->hardware == &hicomx_hw || ch->hardware == &cmx_hw)
- remove_proc_entry(FILENAME_CLOCK, ch->procdir);
-cleanup_filename_channel:
- remove_proc_entry(FILENAME_CHANNEL, ch->procdir);
-cleanup_filename_irq:
- remove_proc_entry(FILENAME_IRQ, ch->procdir);
-cleanup_filename_io:
- remove_proc_entry(FILENAME_IO, ch->procdir);
-cleanup_HW_privdata:
- kfree(ch->HW_privdata);
- return -EIO;
-}
-
-/* Called on echo valami >boardtype */
-static int COMX_exit(struct net_device *dev)
-{
- struct comx_channel *ch = dev->priv;
- struct comx_privdata *hw = ch->HW_privdata;
-
- if (hw->firmware) {
- if (hw->firmware->data) kfree(hw->firmware->data);
- kfree(hw->firmware);
- } if (ch->twin) {
- struct comx_channel *twin_ch = ch->twin->priv;
-
- twin_ch->twin = NULL;
- }
-
- kfree(ch->HW_privdata);
- remove_proc_entry(FILENAME_IO, ch->procdir);
- remove_proc_entry(FILENAME_IRQ, ch->procdir);
- remove_proc_entry(FILENAME_CHANNEL, ch->procdir);
- remove_proc_entry(FILENAME_MEMADDR, ch->procdir);
- remove_proc_entry(FILENAME_FIRMWARE, ch->procdir);
- remove_proc_entry(FILENAME_TWIN, ch->procdir);
- if (ch->hardware == &hicomx_hw || ch->hardware == &cmx_hw) {
- remove_proc_entry(FILENAME_CLOCK, ch->procdir);
- }
-
- MOD_DEC_USE_COUNT;
- return 0;
-}
-
-static int COMX_dump(struct net_device *dev)
-{
- printk(KERN_INFO "%s: COMX_dump called, why ?\n", dev->name);
- return 0;
-}
-
-static struct comx_hardware comx_hw = {
- "comx",
- VERSION,
- COMX_init,
- COMX_exit,
- COMX_dump,
- NULL
-};
-
-static struct comx_hardware cmx_hw = {
- "cmx",
- VERSION,
- COMX_init,
- COMX_exit,
- COMX_dump,
- NULL
-};
-
-static struct comx_hardware hicomx_hw = {
- "hicomx",
- VERSION,
- COMX_init,
- COMX_exit,
- COMX_dump,
- NULL
-};
-
-static int __init comx_hw_comx_init(void)
-{
- comx_register_hardware(&comx_hw);
- comx_register_hardware(&cmx_hw);
- comx_register_hardware(&hicomx_hw);
- return 0;
-}
-
-static void __exit comx_hw_comx_exit(void)
-{
- comx_unregister_hardware("comx");
- comx_unregister_hardware("cmx");
- comx_unregister_hardware("hicomx");
-}
-
-module_init(comx_hw_comx_init);
-module_exit(comx_hw_comx_exit);
+++ /dev/null
-/*
- * Hardware driver for the LoCOMX card, using the generic z85230
- * functions
- *
- * Author: Gergely Madarasz <gorgo@itc.hu>
- *
- * Based on skeleton code and old LoCOMX driver by Tivadar Szemethy <tiv@itc.hu>
- * and the hostess_sv11 driver
- *
- * Contributors:
- * Arnaldo Carvalho de Melo <acme@conectiva.com.br> (0.14)
- *
- * Copyright (C) 1999 ITConsult-Pro Co. <info@itc.hu>
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- *
- * Version 0.10 (99/06/17):
- * - rewritten for the z85230 layer
- *
- * Version 0.11 (99/06/21):
- * - some printk's fixed
- * - get rid of a memory leak (it was impossible though :))
- *
- * Version 0.12 (99/07/07):
- * - check CTS for modem lines, not DCD (which is always high
- * in case of this board)
- * Version 0.13 (99/07/08):
- * - Fix the transmitter status check
- * - Handle the net device statistics better
- * Version 0.14 (00/08/15):
- * - resource release on failure at LOCOMX_init
- */
-
-#define VERSION "0.14"
-
-#include <linux/interrupt.h>
-#include <linux/module.h>
-#include <linux/types.h>
-#include <linux/netdevice.h>
-#include <linux/proc_fs.h>
-#include <linux/ioport.h>
-#include <linux/init.h>
-
-#include <asm/types.h>
-#include <asm/uaccess.h>
-#include <asm/io.h>
-#include <asm/dma.h>
-
-#include "comx.h"
-#include "z85230.h"
-
-MODULE_AUTHOR("Gergely Madarasz <gorgo@itc.hu>");
-MODULE_DESCRIPTION("Hardware driver for the LoCOMX board");
-MODULE_LICENSE("GPL");
-
-#define RX_DMA 3
-#define TX_DMA 1
-#define LOCOMX_ID 0x33
-#define LOCOMX_IO_EXTENT 8
-#define LOCOMX_DEFAULT_IO 0x368
-#define LOCOMX_DEFAULT_IRQ 7
-
-u8 z8530_locomx[] = {
- 11, TCRTxCP,
- 14, DTRREQ,
- 255
-};
-
-struct locomx_data {
- int io_extent;
- struct z8530_dev board;
- struct timer_list status_timer;
-};
-
-static int LOCOMX_txe(struct net_device *dev)
-{
- struct comx_channel *ch = netdev_priv(dev);
- struct locomx_data *hw = ch->HW_privdata;
-
- return (!hw->board.chanA.tx_next_skb);
-}
-
-
-static void locomx_rx(struct z8530_channel *c, struct sk_buff *skb)
-{
- struct net_device *dev = c->netdevice;
- struct comx_channel *ch = netdev_priv(dev);
-
- if (ch->debug_flags & DEBUG_HW_RX) {
- comx_debug_skb(dev, skb, "locomx_rx receiving");
- }
- ch->LINE_rx(dev,skb);
-}
-
-static int LOCOMX_send_packet(struct net_device *dev, struct sk_buff *skb)
-{
- struct comx_channel *ch = netdev_priv(dev);
- struct locomx_data *hw = ch->HW_privdata;
-
- if (ch->debug_flags & DEBUG_HW_TX) {
- comx_debug_bytes(dev, skb->data, skb->len, "LOCOMX_send_packet");
- }
-
- if (!(ch->line_status & LINE_UP)) {
- return FRAME_DROPPED;
- }
-
- if(z8530_queue_xmit(&hw->board.chanA,skb)) {
- printk(KERN_WARNING "%s: FRAME_DROPPED\n",dev->name);
- return FRAME_DROPPED;
- }
-
- if (ch->debug_flags & DEBUG_HW_TX) {
- comx_debug(dev, "%s: LOCOMX_send_packet was successful\n\n", dev->name);
- }
-
- if(!hw->board.chanA.tx_next_skb) {
- return FRAME_QUEUED;
- } else {
- return FRAME_ACCEPTED;
- }
-}
-
-static void locomx_status_timerfun(unsigned long d)
-{
- struct net_device *dev = (struct net_device *)d;
- struct comx_channel *ch = netdev_priv(dev);
- struct locomx_data *hw = ch->HW_privdata;
-
- if(!(ch->line_status & LINE_UP) &&
- (hw->board.chanA.status & CTS)) {
- ch->LINE_status(dev, ch->line_status | LINE_UP);
- }
- if((ch->line_status & LINE_UP) &&
- !(hw->board.chanA.status & CTS)) {
- ch->LINE_status(dev, ch->line_status & ~LINE_UP);
- }
- mod_timer(&hw->status_timer,jiffies + ch->lineup_delay * HZ);
-}
-
-
-static int LOCOMX_open(struct net_device *dev)
-{
- struct comx_channel *ch = netdev_priv(dev);
- struct locomx_data *hw = ch->HW_privdata;
- struct proc_dir_entry *procfile = ch->procdir->subdir;
- unsigned long flags;
- int ret;
-
- if (!dev->base_addr || !dev->irq) {
- return -ENODEV;
- }
-
- if (!request_region(dev->base_addr, hw->io_extent, dev->name)) {
- return -EAGAIN;
- }
-
- hw->board.chanA.ctrlio=dev->base_addr + 5;
- hw->board.chanA.dataio=dev->base_addr + 7;
-
- hw->board.irq=dev->irq;
- hw->board.chanA.netdevice=dev;
- hw->board.chanA.dev=&hw->board;
- hw->board.name=dev->name;
- hw->board.chanA.txdma=TX_DMA;
- hw->board.chanA.rxdma=RX_DMA;
- hw->board.chanA.irqs=&z8530_nop;
- hw->board.chanB.irqs=&z8530_nop;
-
- if(request_irq(dev->irq, z8530_interrupt, SA_INTERRUPT,
- dev->name, &hw->board)) {
- printk(KERN_ERR "%s: unable to obtain irq %d\n", dev->name,
- dev->irq);
- ret=-EAGAIN;
- goto irq_fail;
- }
- if(request_dma(TX_DMA,"LoCOMX (TX)")) {
- printk(KERN_ERR "%s: unable to obtain TX DMA (DMA channel %d)\n",
- dev->name, TX_DMA);
- ret=-EAGAIN;
- goto dma1_fail;
- }
-
- if(request_dma(RX_DMA,"LoCOMX (RX)")) {
- printk(KERN_ERR "%s: unable to obtain RX DMA (DMA channel %d)\n",
- dev->name, RX_DMA);
- ret=-EAGAIN;
- goto dma2_fail;
- }
-
- save_flags(flags);
- cli();
-
- if(z8530_init(&hw->board)!=0)
- {
- printk(KERN_ERR "%s: Z8530 device not found.\n",dev->name);
- ret=-ENODEV;
- goto z8530_fail;
- }
-
- hw->board.chanA.dcdcheck=CTS;
-
- z8530_channel_load(&hw->board.chanA, z8530_hdlc_kilostream_85230);
- z8530_channel_load(&hw->board.chanA, z8530_locomx);
- z8530_channel_load(&hw->board.chanB, z8530_dead_port);
-
- z8530_describe(&hw->board, "I/O", dev->base_addr);
-
- if((ret=z8530_sync_dma_open(dev, &hw->board.chanA))!=0) {
- goto z8530_fail;
- }
-
- restore_flags(flags);
-
-
- hw->board.active=1;
- hw->board.chanA.rx_function=locomx_rx;
-
- ch->init_status |= HW_OPEN;
- if (hw->board.chanA.status & DCD) {
- ch->line_status |= LINE_UP;
- } else {
- ch->line_status &= ~LINE_UP;
- }
-
- comx_status(dev, ch->line_status);
-
- init_timer(&hw->status_timer);
- hw->status_timer.function=locomx_status_timerfun;
- hw->status_timer.data=(unsigned long)dev;
- hw->status_timer.expires=jiffies + ch->lineup_delay * HZ;
- add_timer(&hw->status_timer);
-
- for (; procfile ; procfile = procfile->next) {
- if (strcmp(procfile->name, FILENAME_IO) == 0 ||
- strcmp(procfile->name, FILENAME_IRQ) == 0) {
- procfile->mode = S_IFREG | 0444;
- }
- }
- return 0;
-
-z8530_fail:
- restore_flags(flags);
- free_dma(RX_DMA);
-dma2_fail:
- free_dma(TX_DMA);
-dma1_fail:
- free_irq(dev->irq, &hw->board);
-irq_fail:
- release_region(dev->base_addr, hw->io_extent);
- return ret;
-}
-
-static int LOCOMX_close(struct net_device *dev)
-{
- struct comx_channel *ch = netdev_priv(dev);
- struct locomx_data *hw = ch->HW_privdata;
- struct proc_dir_entry *procfile = ch->procdir->subdir;
-
- hw->board.chanA.rx_function=z8530_null_rx;
- netif_stop_queue(dev);
- z8530_sync_dma_close(dev, &hw->board.chanA);
-
- z8530_shutdown(&hw->board);
-
- del_timer(&hw->status_timer);
- free_dma(RX_DMA);
- free_dma(TX_DMA);
- free_irq(dev->irq,&hw->board);
- release_region(dev->base_addr,8);
-
- for (; procfile ; procfile = procfile->next) {
- if (strcmp(procfile->name, FILENAME_IO) == 0 ||
- strcmp(procfile->name, FILENAME_IRQ) == 0) {
- procfile->mode = S_IFREG | 0644;
- }
- }
-
- ch->init_status &= ~HW_OPEN;
- return 0;
-}
-
-static int LOCOMX_statistics(struct net_device *dev,char *page)
-{
- int len = 0;
-
- len += sprintf(page + len, "Hello\n");
-
- return len;
-}
-
-static int LOCOMX_dump(struct net_device *dev) {
- printk(KERN_INFO "LOCOMX_dump called\n");
- return(-1);
-}
-
-static int locomx_read_proc(char *page, char **start, off_t off, int count,
- int *eof, void *data)
-{
- struct proc_dir_entry *file = (struct proc_dir_entry *)data;
- struct net_device *dev = file->parent->data;
- int len = 0;
-
- if (strcmp(file->name, FILENAME_IO) == 0) {
- len = sprintf(page, "0x%x\n", (unsigned int)dev->base_addr);
- } else if (strcmp(file->name, FILENAME_IRQ) == 0) {
- len = sprintf(page, "%d\n", (unsigned int)dev->irq);
- } else {
- printk(KERN_ERR "hw_read_proc: internal error, filename %s\n",
- file->name);
- return -EBADF;
- }
-
- if (off >= len) {
- *eof = 1;
- return 0;
- }
-
- *start = page + off;
- if (count >= len - off) {
- *eof = 1;
- }
- return min_t(int, count, len - off);
-}
-
-static int locomx_write_proc(struct file *file, const char *buffer,
- u_long count, void *data)
-{
- struct proc_dir_entry *entry = (struct proc_dir_entry *)data;
- struct net_device *dev = (struct net_device *)entry->parent->data;
- int val;
- char *page;
-
- if (!(page = (char *)__get_free_page(GFP_KERNEL))) {
- return -ENOMEM;
- }
-
- if (copy_from_user(page, buffer, count = min_t(unsigned long, count, PAGE_SIZE))) {
- free_page((unsigned long)page);
- return -EBADF;
- }
- if (*(page + count - 1) == '\n') {
- *(page + count - 1) = 0;
- }
-
- if (strcmp(entry->name, FILENAME_IO) == 0) {
- val = simple_strtoul(page, NULL, 0);
- if (val != 0x360 && val != 0x368 && val != 0x370 &&
- val != 0x378) {
- printk(KERN_ERR "LoCOMX: incorrect io address!\n");
- } else {
- dev->base_addr = val;
- }
- } else if (strcmp(entry->name, FILENAME_IRQ) == 0) {
- val = simple_strtoul(page, NULL, 0);
- if (val != 3 && val != 4 && val != 5 && val != 6 && val != 7) {
- printk(KERN_ERR "LoCOMX: incorrect irq value!\n");
- } else {
- dev->irq = val;
- }
- } else {
- printk(KERN_ERR "locomx_write_proc: internal error, filename %s\n",
- entry->name);
- free_page((unsigned long)page);
- return -EBADF;
- }
-
- free_page((unsigned long)page);
- return count;
-}
-
-
-
-static int LOCOMX_init(struct net_device *dev)
-{
- struct comx_channel *ch = netdev_priv(dev);
- struct locomx_data *hw;
- struct proc_dir_entry *new_file;
-
- /* Alloc data for private structure */
- if ((ch->HW_privdata = kmalloc(sizeof(struct locomx_data),
- GFP_KERNEL)) == NULL) {
- return -ENOMEM;
- }
-
- memset(hw = ch->HW_privdata, 0, sizeof(struct locomx_data));
- hw->io_extent = LOCOMX_IO_EXTENT;
-
- /* Register /proc files */
- if ((new_file = create_proc_entry(FILENAME_IO, S_IFREG | 0644,
- ch->procdir)) == NULL) {
- goto cleanup_HW_privdata;
- }
- new_file->data = (void *)new_file;
- new_file->read_proc = &locomx_read_proc;
- new_file->write_proc = &locomx_write_proc;
- new_file->nlink = 1;
-
- if ((new_file = create_proc_entry(FILENAME_IRQ, S_IFREG | 0644,
- ch->procdir)) == NULL) {
- goto cleanup_filename_io;
- }
- new_file->data = (void *)new_file;
- new_file->read_proc = &locomx_read_proc;
- new_file->write_proc = &locomx_write_proc;
- new_file->nlink = 1;
-
-/* No clock yet */
-/*
- if ((new_file = create_proc_entry(FILENAME_CLOCK, S_IFREG | 0644,
- ch->procdir)) == NULL) {
- return -EIO;
- }
- new_file->data = (void *)new_file;
- new_file->read_proc = &locomx_read_proc;
- new_file->write_proc = &locomx_write_proc;
- new_file->nlink = 1;
-*/
-
- ch->HW_access_board = NULL;
- ch->HW_release_board = NULL;
- ch->HW_txe = LOCOMX_txe;
- ch->HW_open = LOCOMX_open;
- ch->HW_close = LOCOMX_close;
- ch->HW_send_packet = LOCOMX_send_packet;
- ch->HW_statistics = LOCOMX_statistics;
- ch->HW_set_clock = NULL;
-
- ch->current_stats = &hw->board.chanA.stats;
- memcpy(ch->current_stats, &ch->stats, sizeof(struct net_device_stats));
-
- dev->base_addr = LOCOMX_DEFAULT_IO;
- dev->irq = LOCOMX_DEFAULT_IRQ;
-
-
- /* O.K. Count one more user on this module */
- MOD_INC_USE_COUNT;
- return 0;
-cleanup_filename_io:
- remove_proc_entry(FILENAME_IO, ch->procdir);
-cleanup_HW_privdata:
- kfree(ch->HW_privdata);
- return -EIO;
-}
-
-
-static int LOCOMX_exit(struct net_device *dev)
-{
- struct comx_channel *ch = netdev_priv(dev);
-
- ch->HW_access_board = NULL;
- ch->HW_release_board = NULL;
- ch->HW_txe = NULL;
- ch->HW_open = NULL;
- ch->HW_close = NULL;
- ch->HW_send_packet = NULL;
- ch->HW_statistics = NULL;
- ch->HW_set_clock = NULL;
- memcpy(&ch->stats, ch->current_stats, sizeof(struct net_device_stats));
- ch->current_stats = &ch->stats;
-
- kfree(ch->HW_privdata);
-
- remove_proc_entry(FILENAME_IO, ch->procdir);
- remove_proc_entry(FILENAME_IRQ, ch->procdir);
-// remove_proc_entry(FILENAME_CLOCK, ch->procdir);
-
- MOD_DEC_USE_COUNT;
- return 0;
-}
-
-static struct comx_hardware locomx_hw = {
- "locomx",
- VERSION,
- LOCOMX_init,
- LOCOMX_exit,
- LOCOMX_dump,
- NULL
-};
-
-static int __init comx_hw_locomx_init(void)
-{
- comx_register_hardware(&locomx_hw);
- return 0;
-}
-
-static void __exit comx_hw_locomx_exit(void)
-{
- comx_unregister_hardware("locomx");
-}
-
-module_init(comx_hw_locomx_init);
-module_exit(comx_hw_locomx_exit);
+++ /dev/null
-/*
- * Hardware driver for the MixCom synchronous serial board
- *
- * Author: Gergely Madarasz <gorgo@itc.hu>
- *
- * based on skeleton driver code and a preliminary hscx driver by
- * Tivadar Szemethy <tiv@itc.hu>
- *
- * Copyright (C) 1998-1999 ITConsult-Pro Co. <info@itc.hu>
- *
- * Contributors:
- * Arnaldo Carvalho de Melo <acme@conectiva.com.br> (0.65)
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- *
- * Version 0.60 (99/06/11):
- * - ported to the kernel, now works as builtin code
- *
- * Version 0.61 (99/06/11):
- * - recognize the one-channel MixCOM card (id byte = 0x13)
- * - printk fixes
- *
- * Version 0.62 (99/07/15):
- * - fixes according to the new hw docs
- * - report line status when open
- *
- * Version 0.63 (99/09/21):
- * - line status report fixes
- *
- * Version 0.64 (99/12/01):
- * - some more cosmetical fixes
- *
- * Version 0.65 (00/08/15)
- * - resource release on failure at MIXCOM_init
- */
-
-#define VERSION "0.65"
-
-#include <linux/interrupt.h>
-#include <linux/module.h>
-#include <linux/types.h>
-#include <linux/netdevice.h>
-#include <linux/proc_fs.h>
-#include <linux/ioport.h>
-#include <linux/delay.h>
-#include <linux/init.h>
-
-#include <asm/types.h>
-#include <asm/uaccess.h>
-#include <asm/io.h>
-
-#include "comx.h"
-#include "mixcom.h"
-#include "hscx.h"
-
-MODULE_AUTHOR("Gergely Madarasz <gorgo@itc.hu>");
-MODULE_DESCRIPTION("Hardware-level driver for the serial port of the MixCom board");
-MODULE_LICENSE("GPL");
-
-#define MIXCOM_DATA(d) ((struct mixcom_privdata *)(COMX_CHANNEL(d)-> \
- HW_privdata))
-
-#define MIXCOM_BOARD_BASE(d) (d->base_addr - MIXCOM_SERIAL_OFFSET - \
- (1 - MIXCOM_DATA(d)->channel) * MIXCOM_CHANNEL_OFFSET)
-
-#define MIXCOM_DEV_BASE(port,channel) (port + MIXCOM_SERIAL_OFFSET + \
- (1 - channel) * MIXCOM_CHANNEL_OFFSET)
-
-/* Values used to set the IRQ line */
-static unsigned char mixcom_set_irq[]={0xFF, 0xFF, 0xFF, 0x0, 0xFF, 0x2, 0x4, 0x6, 0xFF, 0xFF, 0x8, 0xA, 0xC, 0xFF, 0xE, 0xFF};
-
-static unsigned char* hscx_versions[]={"A1", NULL, "A2", NULL, "A3", "2.1"};
-
-struct mixcom_privdata {
- u16 clock;
- char channel;
- long txbusy;
- struct sk_buff *sending;
- unsigned tx_ptr;
- struct sk_buff *recving;
- unsigned rx_ptr;
- unsigned char status;
- char card_has_status;
-};
-
-static inline void wr_hscx(struct net_device *dev, int reg, unsigned char val)
-{
- outb(val, dev->base_addr + reg);
-}
-
-static inline unsigned char rd_hscx(struct net_device *dev, int reg)
-{
- return inb(dev->base_addr + reg);
-}
-
-static inline void hscx_cmd(struct net_device *dev, int cmd)
-{
- unsigned long jiffs = jiffies;
- unsigned char cec;
- unsigned delay = 0;
-
- while ((cec = (rd_hscx(dev, HSCX_STAR) & HSCX_CEC) != 0) &&
- time_before(jiffies, jiffs + HZ)) {
- udelay(1);
- if (++delay > (100000 / HZ)) break;
- }
- if (cec) {
- printk(KERN_WARNING "%s: CEC stuck, probably no clock!\n",dev->name);
- } else {
- wr_hscx(dev, HSCX_CMDR, cmd);
- }
-}
-
-static inline void hscx_fill_fifo(struct net_device *dev)
-{
- struct comx_channel *ch = dev->priv;
- struct mixcom_privdata *hw = ch->HW_privdata;
- register word to_send = hw->sending->len - hw->tx_ptr;
-
-
- outsb(dev->base_addr + HSCX_FIFO,
- &(hw->sending->data[hw->tx_ptr]), min_t(unsigned int, to_send, 32));
- if (to_send <= 32) {
- hscx_cmd(dev, HSCX_XTF | HSCX_XME);
- kfree_skb(hw->sending);
- hw->sending = NULL;
- hw->tx_ptr = 0;
- } else {
- hscx_cmd(dev, HSCX_XTF);
- hw->tx_ptr += 32;
- }
-}
-
-static inline void hscx_empty_fifo(struct net_device *dev, int cnt)
-{
- struct comx_channel *ch = dev->priv;
- struct mixcom_privdata *hw = ch->HW_privdata;
-
- if (hw->recving == NULL) {
- if (!(hw->recving = dev_alloc_skb(HSCX_MTU + 16))) {
- ch->stats.rx_dropped++;
- hscx_cmd(dev, HSCX_RHR);
- } else {
- skb_reserve(hw->recving, 16);
- skb_put(hw->recving, HSCX_MTU);
- }
- hw->rx_ptr = 0;
- }
- if (cnt > 32 || !cnt || hw->recving == NULL) {
- printk(KERN_ERR "hscx_empty_fifo: cnt is %d, hw->recving %p\n",
- cnt, (void *)hw->recving);
- return;
- }
-
- insb(dev->base_addr + HSCX_FIFO, &(hw->recving->data[hw->rx_ptr]),cnt);
- hw->rx_ptr += cnt;
- hscx_cmd(dev, HSCX_RMC);
-}
-
-
-static int MIXCOM_txe(struct net_device *dev)
-{
- struct comx_channel *ch = dev->priv;
- struct mixcom_privdata *hw = ch->HW_privdata;
-
- return !test_bit(0, &hw->txbusy);
-}
-
-static int mixcom_probe(struct net_device *dev)
-{
- unsigned long flags;
- int id, vstr, ret=0;
-
- save_flags(flags); cli();
-
- id=inb_p(MIXCOM_BOARD_BASE(dev) + MIXCOM_ID_OFFSET) & 0x7f;
-
- if (id != MIXCOM_ID ) {
- ret=-ENODEV;
- printk(KERN_WARNING "%s: no MixCOM board found at 0x%04lx\n",dev->name, dev->base_addr);
- goto out;
- }
-
- vstr=inb_p(dev->base_addr + HSCX_VSTR) & 0x0f;
- if(vstr>=sizeof(hscx_versions)/sizeof(char*) ||
- hscx_versions[vstr]==NULL) {
- printk(KERN_WARNING "%s: board found but no HSCX chip detected at 0x%4lx (vstr = 0x%1x)\n",dev->name,dev->base_addr,vstr);
- ret = -ENODEV;
- } else {
- printk(KERN_INFO "%s: HSCX chip version %s\n",dev->name,hscx_versions[vstr]);
- ret = 0;
- }
-
-out:
-
- restore_flags(flags);
- return ret;
-}
-
-#if 0
-static void MIXCOM_set_clock(struct net_device *dev)
-{
- struct comx_channel *ch = dev->priv;
- struct mixcom_privdata *hw = ch->HW_privdata;
-
- if (hw->clock) {
- ;
- } else {
- ;
- }
-}
-#endif
-
-static void mixcom_board_on(struct net_device *dev)
-{
- outb_p(MIXCOM_OFF , MIXCOM_BOARD_BASE(dev) + MIXCOM_IT_OFFSET);
- udelay(1000);
- outb_p(mixcom_set_irq[dev->irq] | MIXCOM_ON,
- MIXCOM_BOARD_BASE(dev) + MIXCOM_IT_OFFSET);
- udelay(1000);
-}
-
-static void mixcom_board_off(struct net_device *dev)
-{
- outb_p(MIXCOM_OFF , MIXCOM_BOARD_BASE(dev) + MIXCOM_IT_OFFSET);
- udelay(1000);
-}
-
-static void mixcom_off(struct net_device *dev)
-{
- wr_hscx(dev, HSCX_CCR1, 0x0);
-}
-
-static void mixcom_on(struct net_device *dev)
-{
- struct comx_channel *ch = dev->priv;
-
- wr_hscx(dev, HSCX_CCR1, HSCX_PU | HSCX_ODS | HSCX_ITF); // power up, push-pull
- wr_hscx(dev, HSCX_CCR2, HSCX_CIE /* | HSCX_RIE */ );
- wr_hscx(dev, HSCX_MODE, HSCX_TRANS | HSCX_ADM8 | HSCX_RAC | HSCX_RTS );
- wr_hscx(dev, HSCX_RLCR, HSCX_RC | 47); // 1504 bytes
- wr_hscx(dev, HSCX_MASK, HSCX_RSC | HSCX_TIN );
- hscx_cmd(dev, HSCX_XRES | HSCX_RHR);
-
- if (ch->HW_set_clock) ch->HW_set_clock(dev);
-
-}
-
-static int MIXCOM_send_packet(struct net_device *dev, struct sk_buff *skb)
-{
- struct comx_channel *ch = dev->priv;
- struct mixcom_privdata *hw = ch->HW_privdata;
- unsigned long flags;
-
- if (ch->debug_flags & DEBUG_HW_TX) {
- comx_debug_bytes(dev, skb->data, skb->len, "MIXCOM_send_packet");
- }
-
- if (!(ch->line_status & LINE_UP)) {
- return FRAME_DROPPED;
- }
-
- if (skb->len > HSCX_MTU) {
- ch->stats.tx_errors++;
- return FRAME_ERROR;
- }
-
- save_flags(flags); cli();
-
- if (test_and_set_bit(0, &hw->txbusy)) {
- printk(KERN_ERR "%s: transmitter called while busy... dropping frame (length %d)\n", dev->name, skb->len);
- restore_flags(flags);
- return FRAME_DROPPED;
- }
-
-
- hw->sending = skb;
- hw->tx_ptr = 0;
- hw->txbusy = 1;
-// atomic_inc(&skb->users); // save it
- hscx_fill_fifo(dev);
- restore_flags(flags);
-
- ch->stats.tx_packets++;
- ch->stats.tx_bytes += skb->len;
-
- if (ch->debug_flags & DEBUG_HW_TX) {
- comx_debug(dev, "MIXCOM_send_packet was successful\n\n");
- }
-
- return FRAME_ACCEPTED;
-}
-
-static inline void mixcom_receive_frame(struct net_device *dev)
-{
- struct comx_channel *ch=dev->priv;
- struct mixcom_privdata *hw=ch->HW_privdata;
- register byte rsta;
- register word length;
-
- rsta = rd_hscx(dev, HSCX_RSTA) & (HSCX_VFR | HSCX_RDO |
- HSCX_CRC | HSCX_RAB);
- length = ((rd_hscx(dev, HSCX_RBCH) & 0x0f) << 8) |
- rd_hscx(dev, HSCX_RBCL);
-
- if ( length > hw->rx_ptr ) {
- hscx_empty_fifo(dev, length - hw->rx_ptr);
- }
-
- if (!(rsta & HSCX_VFR)) {
- ch->stats.rx_length_errors++;
- }
- if (rsta & HSCX_RDO) {
- ch->stats.rx_over_errors++;
- }
- if (!(rsta & HSCX_CRC)) {
- ch->stats.rx_crc_errors++;
- }
- if (rsta & HSCX_RAB) {
- ch->stats.rx_frame_errors++;
- }
- ch->stats.rx_packets++;
- ch->stats.rx_bytes += length;
-
- if (rsta == (HSCX_VFR | HSCX_CRC) && hw->recving) {
- skb_trim(hw->recving, hw->rx_ptr - 1);
- if (ch->debug_flags & DEBUG_HW_RX) {
- comx_debug_skb(dev, hw->recving,
- "MIXCOM_interrupt receiving");
- }
- hw->recving->dev = dev;
- if (ch->LINE_rx) {
- ch->LINE_rx(dev, hw->recving);
- }
- }
- else if(hw->recving) {
- kfree_skb(hw->recving);
- }
- hw->recving = NULL;
- hw->rx_ptr = 0;
-}
-
-
-static inline void mixcom_extended_interrupt(struct net_device *dev)
-{
- struct comx_channel *ch=dev->priv;
- struct mixcom_privdata *hw=ch->HW_privdata;
- register byte exir;
-
- exir = rd_hscx(dev, HSCX_EXIR) & (HSCX_XDU | HSCX_RFO | HSCX_CSC );
-
- if (exir & HSCX_RFO) {
- ch->stats.rx_over_errors++;
- if (hw->rx_ptr) {
- kfree_skb(hw->recving);
- hw->recving = NULL; hw->rx_ptr = 0;
- }
- printk(KERN_ERR "MIXCOM: rx overrun\n");
- hscx_cmd(dev, HSCX_RHR);
- }
-
- if (exir & HSCX_XDU) { // xmit underrun
- ch->stats.tx_errors++;
- ch->stats.tx_aborted_errors++;
- if (hw->tx_ptr) {
- kfree_skb(hw->sending);
- hw->sending = NULL;
- hw->tx_ptr = 0;
- }
- hscx_cmd(dev, HSCX_XRES);
- clear_bit(0, &hw->txbusy);
- if (ch->LINE_tx) {
- ch->LINE_tx(dev);
- }
- printk(KERN_ERR "MIXCOM: tx underrun\n");
- }
-
- if (exir & HSCX_CSC) {
- ch->stats.tx_carrier_errors++;
- if ((rd_hscx(dev, HSCX_STAR) & HSCX_CTS) == 0) { // Vonal le
- if (test_and_clear_bit(0, &ch->lineup_pending)) {
- del_timer(&ch->lineup_timer);
- } else if (ch->line_status & LINE_UP) {
- ch->line_status &= ~LINE_UP;
- if (ch->LINE_status) {
- ch->LINE_status(dev,ch->line_status);
- }
- }
- }
- if (!(ch->line_status & LINE_UP) && (rd_hscx(dev, HSCX_STAR) &
- HSCX_CTS)) { // Vonal fol
- if (!test_and_set_bit(0,&ch->lineup_pending)) {
- ch->lineup_timer.function = comx_lineup_func;
- ch->lineup_timer.data = (unsigned long)dev;
- ch->lineup_timer.expires = jiffies + HZ *
- ch->lineup_delay;
- add_timer(&ch->lineup_timer);
- hscx_cmd(dev, HSCX_XRES);
- clear_bit(0, &hw->txbusy);
- if (hw->sending) {
- kfree_skb(hw->sending);
- }
- hw->sending=NULL;
- hw->tx_ptr = 0;
- }
- }
- }
-}
-
-
-static irqreturn_t MIXCOM_interrupt(int irq, void *dev_id, struct pt_regs *regs)
-{
- unsigned long flags;
- struct net_device *dev = (struct net_device *)dev_id;
- struct comx_channel *ch, *twin_ch;
- struct mixcom_privdata *hw, *twin_hw;
- register unsigned char ista;
-
- if (dev==NULL) {
- printk(KERN_ERR "comx_interrupt: irq %d for unknown device\n",irq);
- return IRQ_NONE;
- }
-
- ch = dev->priv;
- hw = ch->HW_privdata;
-
- save_flags(flags); cli();
-
- while((ista = (rd_hscx(dev, HSCX_ISTA) & (HSCX_RME | HSCX_RPF |
- HSCX_XPR | HSCX_EXB | HSCX_EXA | HSCX_ICA)))) {
- register byte ista2 = 0;
-
- if (ista & HSCX_RME) {
- mixcom_receive_frame(dev);
- }
- if (ista & HSCX_RPF) {
- hscx_empty_fifo(dev, 32);
- }
- if (ista & HSCX_XPR) {
- if (hw->tx_ptr) {
- hscx_fill_fifo(dev);
- } else {
- clear_bit(0, &hw->txbusy);
- ch->LINE_tx(dev);
- }
- }
-
- if (ista & HSCX_EXB) {
- mixcom_extended_interrupt(dev);
- }
-
- if ((ista & HSCX_EXA) && ch->twin) {
- mixcom_extended_interrupt(ch->twin);
- }
-
- if ((ista & HSCX_ICA) && ch->twin &&
- (ista2 = rd_hscx(ch->twin, HSCX_ISTA) &
- (HSCX_RME | HSCX_RPF | HSCX_XPR ))) {
- if (ista2 & HSCX_RME) {
- mixcom_receive_frame(ch->twin);
- }
- if (ista2 & HSCX_RPF) {
- hscx_empty_fifo(ch->twin, 32);
- }
- if (ista2 & HSCX_XPR) {
- twin_ch=ch->twin->priv;
- twin_hw=twin_ch->HW_privdata;
- if (twin_hw->tx_ptr) {
- hscx_fill_fifo(ch->twin);
- } else {
- clear_bit(0, &twin_hw->txbusy);
- ch->LINE_tx(ch->twin);
- }
- }
- }
- }
-
- restore_flags(flags);
- return IRQ_HANDLED;
-}
-
-static int MIXCOM_open(struct net_device *dev)
-{
- struct comx_channel *ch = dev->priv;
- struct mixcom_privdata *hw = ch->HW_privdata;
- struct proc_dir_entry *procfile = ch->procdir->subdir;
- unsigned long flags;
- int ret = -ENODEV;
-
- if (!dev->base_addr || !dev->irq)
- goto err_ret;
-
-
- if(hw->channel==1) {
- if(!TWIN(dev) || !(COMX_CHANNEL(TWIN(dev))->init_status &
- IRQ_ALLOCATED)) {
- printk(KERN_ERR "%s: channel 0 not yet initialized\n",dev->name);
- ret = -EAGAIN;
- goto err_ret;
- }
- }
-
-
- /* Is our hw present at all ? Not checking for channel 0 if it is already
- open */
- if(hw->channel!=0 || !(ch->init_status & IRQ_ALLOCATED)) {
- if (!request_region(dev->base_addr, MIXCOM_IO_EXTENT, dev->name)) {
- ret = -EAGAIN;
- goto err_ret;
- }
- if (mixcom_probe(dev)) {
- ret = -ENODEV;
- goto err_release_region;
- }
- }
-
- if(hw->channel==0 && !(ch->init_status & IRQ_ALLOCATED)) {
- if (request_irq(dev->irq, MIXCOM_interrupt, 0,
- dev->name, (void *)dev)) {
- printk(KERN_ERR "MIXCOM: unable to obtain irq %d\n", dev->irq);
- ret = -EAGAIN;
- goto err_release_region;
- }
- }
-
- save_flags(flags); cli();
-
- if(hw->channel==0 && !(ch->init_status & IRQ_ALLOCATED)) {
- ch->init_status|=IRQ_ALLOCATED;
- mixcom_board_on(dev);
- }
-
- mixcom_on(dev);
-
-
- hw->status=inb(MIXCOM_BOARD_BASE(dev) + MIXCOM_STATUS_OFFSET);
- if(hw->status != 0xff) {
- printk(KERN_DEBUG "%s: board has status register, good\n", dev->name);
- hw->card_has_status=1;
- }
-
- hw->txbusy = 0;
- ch->init_status |= HW_OPEN;
-
- if (rd_hscx(dev, HSCX_STAR) & HSCX_CTS) {
- ch->line_status |= LINE_UP;
- } else {
- ch->line_status &= ~LINE_UP;
- }
-
- restore_flags(flags);
-
- ch->LINE_status(dev, ch->line_status);
-
- for (; procfile ; procfile = procfile->next) {
- if (strcmp(procfile->name, FILENAME_IO) == 0 ||
- strcmp(procfile->name, FILENAME_CHANNEL) == 0 ||
- strcmp(procfile->name, FILENAME_CLOCK) == 0 ||
- strcmp(procfile->name, FILENAME_IRQ) == 0) {
- procfile->mode = S_IFREG | 0444;
- }
- }
-
- return 0;
-
-err_release_region:
- release_region(dev->base_addr, MIXCOM_IO_EXTENT);
-err_ret:
- return ret;
-}
-
-static int MIXCOM_close(struct net_device *dev)
-{
- struct comx_channel *ch = dev->priv;
- struct mixcom_privdata *hw = ch->HW_privdata;
- struct proc_dir_entry *procfile = ch->procdir->subdir;
- unsigned long flags;
-
-
- save_flags(flags); cli();
-
- mixcom_off(dev);
-
- /* This is channel 0, twin is not open, we can safely turn off everything */
- if(hw->channel==0 && (!(TWIN(dev)) ||
- !(COMX_CHANNEL(TWIN(dev))->init_status & HW_OPEN))) {
- mixcom_board_off(dev);
- free_irq(dev->irq, dev);
- release_region(dev->base_addr, MIXCOM_IO_EXTENT);
- ch->init_status &= ~IRQ_ALLOCATED;
- }
-
- /* This is channel 1, channel 0 has already been shutdown, we can release
- this one too */
- if(hw->channel==1 && !(COMX_CHANNEL(TWIN(dev))->init_status & HW_OPEN)) {
- if(COMX_CHANNEL(TWIN(dev))->init_status & IRQ_ALLOCATED) {
- mixcom_board_off(TWIN(dev));
- free_irq(TWIN(dev)->irq, TWIN(dev));
- release_region(TWIN(dev)->base_addr, MIXCOM_IO_EXTENT);
- COMX_CHANNEL(TWIN(dev))->init_status &= ~IRQ_ALLOCATED;
- }
- }
-
- /* the ioports for channel 1 can be safely released */
- if(hw->channel==1) {
- release_region(dev->base_addr, MIXCOM_IO_EXTENT);
- }
-
- restore_flags(flags);
-
- /* If we don't hold any hardware open */
- if(!(ch->init_status & IRQ_ALLOCATED)) {
- for (; procfile ; procfile = procfile->next) {
- if (strcmp(procfile->name, FILENAME_IO) == 0 ||
- strcmp(procfile->name, FILENAME_CHANNEL) == 0 ||
- strcmp(procfile->name, FILENAME_CLOCK) == 0 ||
- strcmp(procfile->name, FILENAME_IRQ) == 0) {
- procfile->mode = S_IFREG | 0644;
- }
- }
- }
-
- /* channel 0 was only waiting for us to close channel 1
- close it completely */
-
- if(hw->channel==1 && !(COMX_CHANNEL(TWIN(dev))->init_status & HW_OPEN)) {
- for (procfile=COMX_CHANNEL(TWIN(dev))->procdir->subdir;
- procfile ; procfile = procfile->next) {
- if (strcmp(procfile->name, FILENAME_IO) == 0 ||
- strcmp(procfile->name, FILENAME_CHANNEL) == 0 ||
- strcmp(procfile->name, FILENAME_CLOCK) == 0 ||
- strcmp(procfile->name, FILENAME_IRQ) == 0) {
- procfile->mode = S_IFREG | 0644;
- }
- }
- }
-
- ch->init_status &= ~HW_OPEN;
- return 0;
-}
-
-static int MIXCOM_statistics(struct net_device *dev,char *page)
-{
- struct comx_channel *ch = dev->priv;
- // struct mixcom_privdata *hw = ch->HW_privdata;
- int len = 0;
-
- if(ch->init_status && IRQ_ALLOCATED) {
- len += sprintf(page + len, "Mixcom board: hardware open\n");
- }
-
- return len;
-}
-
-static int MIXCOM_dump(struct net_device *dev) {
- return 0;
-}
-
-static int mixcom_read_proc(char *page, char **start, off_t off, int count,
- int *eof, void *data)
-{
- struct proc_dir_entry *file = (struct proc_dir_entry *)data;
- struct net_device *dev = file->parent->data;
- struct comx_channel *ch = dev->priv;
- struct mixcom_privdata *hw = ch->HW_privdata;
- int len = 0;
-
- if (strcmp(file->name, FILENAME_IO) == 0) {
- len = sprintf(page, "0x%x\n",
- (unsigned int)MIXCOM_BOARD_BASE(dev));
- } else if (strcmp(file->name, FILENAME_IRQ) == 0) {
- len = sprintf(page, "%d\n", (unsigned int)dev->irq);
- } else if (strcmp(file->name, FILENAME_CLOCK) == 0) {
- if (hw->clock) len = sprintf(page, "%d\n", hw->clock);
- else len = sprintf(page, "external\n");
- } else if (strcmp(file->name, FILENAME_CHANNEL) == 0) {
- len = sprintf(page, "%01d\n", hw->channel);
- } else if (strcmp(file->name, FILENAME_TWIN) == 0) {
- if (ch->twin) {
- len = sprintf(page, "%s\n",ch->twin->name);
- } else {
- len = sprintf(page, "none\n");
- }
- } else {
- printk(KERN_ERR "mixcom_read_proc: internal error, filename %s\n", file->name);
- return -EBADF;
- }
-
- if (off >= len) {
- *eof = 1;
- return 0;
- }
- *start = page + off;
- if (count >= len - off) *eof = 1;
- return min_t(int, count, len - off);
-}
-
-
-static struct net_device *mixcom_twin_check(struct net_device *dev)
-{
- struct comx_channel *ch = dev->priv;
- struct proc_dir_entry *procfile = ch->procdir->parent->subdir;
- struct mixcom_privdata *hw = ch->HW_privdata;
-
- struct net_device *twin;
- struct comx_channel *ch_twin;
- struct mixcom_privdata *hw_twin;
-
-
- for ( ; procfile ; procfile = procfile->next) {
- if(!S_ISDIR(procfile->mode)) continue;
-
- twin = procfile->data;
- ch_twin = twin->priv;
- hw_twin = ch_twin->HW_privdata;
-
-
- if (twin != dev && dev->irq && dev->base_addr &&
- dev->irq == twin->irq &&
- ch->hardware == ch_twin->hardware &&
- dev->base_addr == twin->base_addr +
- (1-2*hw->channel)*MIXCOM_CHANNEL_OFFSET &&
- hw->channel == (1 - hw_twin->channel)) {
- if (!TWIN(twin) || TWIN(twin)==dev) {
- return twin;
- }
- }
- }
- return NULL;
-}
-
-
-static void setup_twin(struct net_device* dev)
-{
-
- if(TWIN(dev) && TWIN(TWIN(dev))) {
- TWIN(TWIN(dev))=NULL;
- }
- if ((TWIN(dev) = mixcom_twin_check(dev)) != NULL) {
- if (TWIN(TWIN(dev)) && TWIN(TWIN(dev)) != dev) {
- TWIN(dev)=NULL;
- } else {
- TWIN(TWIN(dev))=dev;
- }
- }
-}
-
-static int mixcom_write_proc(struct file *file, const char *buffer,
- u_long count, void *data)
-{
- struct proc_dir_entry *entry = (struct proc_dir_entry *)data;
- struct net_device *dev = (struct net_device *)entry->parent->data;
- struct comx_channel *ch = dev->priv;
- struct mixcom_privdata *hw = ch->HW_privdata;
- char *page;
- int value;
-
- if (!(page = (char *)__get_free_page(GFP_KERNEL))) {
- return -ENOMEM;
- }
-
- if (copy_from_user(page, buffer, count = min_t(unsigned long, count, PAGE_SIZE))) {
- free_page((unsigned long)page);
- return -EFAULT;
- }
- if (*(page + count - 1) == '\n') {
- *(page + count - 1) = 0;
- }
-
- if (strcmp(entry->name, FILENAME_IO) == 0) {
- value = simple_strtoul(page, NULL, 0);
- if (value != 0x180 && value != 0x280 && value != 0x380) {
- printk(KERN_ERR "MIXCOM: incorrect io address!\n");
- } else {
- dev->base_addr = MIXCOM_DEV_BASE(value,hw->channel);
- }
- } else if (strcmp(entry->name, FILENAME_IRQ) == 0) {
- value = simple_strtoul(page, NULL, 0);
- if (value < 0 || value > 15 || mixcom_set_irq[value]==0xFF) {
- printk(KERN_ERR "MIXCOM: incorrect irq value!\n");
- } else {
- dev->irq = value;
- }
- } else if (strcmp(entry->name, FILENAME_CLOCK) == 0) {
- if (strncmp("ext", page, 3) == 0) {
- hw->clock = 0;
- } else {
- int kbps;
-
- kbps = simple_strtoul(page, NULL, 0);
- if (!kbps) {
- hw->clock = 0;
- } else {
- hw->clock = kbps;
- }
- if (hw->clock < 32 || hw->clock > 2000) {
- hw->clock = 0;
- printk(KERN_ERR "MIXCOM: invalid clock rate!\n");
- }
- }
- if (ch->init_status & HW_OPEN && ch->HW_set_clock) {
- ch->HW_set_clock(dev);
- }
- } else if (strcmp(entry->name, FILENAME_CHANNEL) == 0) {
- value = simple_strtoul(page, NULL, 0);
- if (value > 2) {
- printk(KERN_ERR "Invalid channel number\n");
- } else {
- dev->base_addr+=(hw->channel - value) * MIXCOM_CHANNEL_OFFSET;
- hw->channel = value;
- }
- } else {
- printk(KERN_ERR "hw_read_proc: internal error, filename %s\n",
- entry->name);
- return -EBADF;
- }
-
- setup_twin(dev);
-
- free_page((unsigned long)page);
- return count;
-}
-
-static int MIXCOM_init(struct net_device *dev) {
- struct comx_channel *ch = dev->priv;
- struct mixcom_privdata *hw;
- struct proc_dir_entry *new_file;
-
- if ((ch->HW_privdata = kmalloc(sizeof(struct mixcom_privdata),
- GFP_KERNEL)) == NULL) {
- return -ENOMEM;
- }
-
- memset(hw = ch->HW_privdata, 0, sizeof(struct mixcom_privdata));
-
- if ((new_file = create_proc_entry(FILENAME_IO, S_IFREG | 0644,
- ch->procdir)) == NULL) {
- goto cleanup_HW_privdata;
- }
- new_file->data = (void *)new_file;
- new_file->read_proc = &mixcom_read_proc;
- new_file->write_proc = &mixcom_write_proc;
- new_file->nlink = 1;
-
- if ((new_file = create_proc_entry(FILENAME_IRQ, S_IFREG | 0644,
- ch->procdir)) == NULL) {
- goto cleanup_filename_io;
- }
- new_file->data = (void *)new_file;
- new_file->read_proc = &mixcom_read_proc;
- new_file->write_proc = &mixcom_write_proc;
- new_file->nlink = 1;
-
-#if 0
- if ((new_file = create_proc_entry(FILENAME_CLOCK, S_IFREG | 0644,
- ch->procdir)) == NULL) {
- return -EIO;
- }
- new_file->data = (void *)new_file;
- new_file->read_proc = &mixcom_read_proc;
- new_file->write_proc = &mixcom_write_proc;
- new_file->nlink = 1;
-#endif
-
- if ((new_file = create_proc_entry(FILENAME_CHANNEL, S_IFREG | 0644,
- ch->procdir)) == NULL) {
- goto cleanup_filename_irq;
- }
- new_file->data = (void *)new_file;
- new_file->read_proc = &mixcom_read_proc;
- new_file->write_proc = &mixcom_write_proc;
- new_file->nlink = 1;
-
- if ((new_file = create_proc_entry(FILENAME_TWIN, S_IFREG | 0444,
- ch->procdir)) == NULL) {
- goto cleanup_filename_channel;
- }
- new_file->data = (void *)new_file;
- new_file->read_proc = &mixcom_read_proc;
- new_file->write_proc = &mixcom_write_proc;
- new_file->nlink = 1;
-
- setup_twin(dev);
-
- /* Fill in ch_struct hw specific pointers */
- ch->HW_access_board = NULL;
- ch->HW_release_board = NULL;
- ch->HW_txe = MIXCOM_txe;
- ch->HW_open = MIXCOM_open;
- ch->HW_close = MIXCOM_close;
- ch->HW_send_packet = MIXCOM_send_packet;
- ch->HW_statistics = MIXCOM_statistics;
- ch->HW_set_clock = NULL;
-
- dev->base_addr = MIXCOM_DEV_BASE(MIXCOM_DEFAULT_IO,0);
- dev->irq = MIXCOM_DEFAULT_IRQ;
-
- MOD_INC_USE_COUNT;
- return 0;
-cleanup_filename_channel:
- remove_proc_entry(FILENAME_CHANNEL, ch->procdir);
-cleanup_filename_irq:
- remove_proc_entry(FILENAME_IRQ, ch->procdir);
-cleanup_filename_io:
- remove_proc_entry(FILENAME_IO, ch->procdir);
-cleanup_HW_privdata:
- kfree(ch->HW_privdata);
- return -EIO;
-}
-
-static int MIXCOM_exit(struct net_device *dev)
-{
- struct comx_channel *ch = dev->priv;
- struct mixcom_privdata *hw = ch->HW_privdata;
-
- if(hw->channel==0 && TWIN(dev)) {
- return -EBUSY;
- }
-
- if(hw->channel==1 && TWIN(dev)) {
- TWIN(TWIN(dev))=NULL;
- }
-
- kfree(ch->HW_privdata);
- remove_proc_entry(FILENAME_IO, ch->procdir);
- remove_proc_entry(FILENAME_IRQ, ch->procdir);
-#if 0
- remove_proc_entry(FILENAME_CLOCK, ch->procdir);
-#endif
- remove_proc_entry(FILENAME_CHANNEL, ch->procdir);
- remove_proc_entry(FILENAME_TWIN, ch->procdir);
-
- MOD_DEC_USE_COUNT;
- return 0;
-}
-
-static struct comx_hardware mixcomhw = {
- "mixcom",
- VERSION,
- MIXCOM_init,
- MIXCOM_exit,
- MIXCOM_dump,
- NULL
-};
-
-static int __init comx_hw_mixcom_init(void)
-{
- return comx_register_hardware(&mixcomhw);
-}
-
-static void __exit comx_hw_mixcom_exit(void)
-{
- comx_unregister_hardware("mixcom");
-}
-
-module_init(comx_hw_mixcom_init);
-module_exit(comx_hw_mixcom_exit);
+++ /dev/null
-/*
- * Hardware-level driver for the SliceCOM board for Linux kernels 2.4.X
- *
- * Current maintainer / latest changes: Pasztor Szilard <don@itc.hu>
- *
- * Original author: Bartok Istvan <bartoki@itc.hu>
- * Based on skeleton by Tivadar Szemethy <tiv@itc.hu>
- *
- * 0.51:
- * - port for 2.4.x
- * - clean up some code, make it more portable
- * - busted direct hardware access through mapped memory
- * - fix a possible race
- * - prevent procfs buffer overflow
- *
- * 0.50:
- * - support for the pcicom board, lots of rearrangements
- * - handle modem status lines
- *
- * 0.50a:
- * - fix for falc version 1.0
- *
- * 0.50b: T&t
- * - fix for bad localbus
- */
-
-#define VERSION "0.51"
-#define VERSIONSTR "SliceCOM v" VERSION ", 2002/01/07\n"
-
-#include <linux/config.h>
-#include <linux/ctype.h>
-#include <linux/module.h>
-#include <linux/types.h>
-#include <linux/netdevice.h>
-#include <linux/proc_fs.h>
-#include <linux/ioport.h>
-#include <linux/pci.h>
-#include <linux/init.h>
-
-#include <asm/delay.h>
-#include <asm/types.h>
-#include <asm/uaccess.h>
-#include <asm/io.h>
-
-#define COMX_NEW
-
-#ifndef COMX_NEW
-#include "../include/comx.h"
-#include "../include/munich32x.h"
-#include "../include/falc-lh.h"
-#else
-#include "comx.h"
-#include "munich32x.h"
-#include "falc-lh.h"
-#endif
-
-MODULE_AUTHOR("Bartok Istvan <bartoki@itc.hu>, Gergely Madarasz <gorgo@itc.hu>, Szilard Pasztor <don@itc.hu>");
-MODULE_DESCRIPTION("Hardware-level driver for the SliceCOM and PciCOM (WelCOM) adapters");
-MODULE_LICENSE("GPL");
-/*
- * TODO: az ilyenek a comxhw.h -ban szoktak lenni, idovel menjenek majd oda:
- */
-
-#define FILENAME_BOARDNUM "boardnum" /* /proc/comx/comx0.1/boardnum */
-#define FILENAME_TIMESLOTS "timeslots" /* /proc/comx/comx0.1/timeslots */
-#define FILENAME_FRAMING "framing" /* /proc/comx/comx0.1/framing */
-#define FILENAME_LINECODE "linecode" /* /proc/comx/comx0.1/linecode */
-#define FILENAME_CLOCK_SOURCE "clock_source" /* /proc/comx/comx0.1/clock_source */
-#define FILENAME_LOOPBACK "loopback" /* /proc/comx/comx0.1/loopback */
-#define FILENAME_REG "reg" /* /proc/comx/comx0.1/reg */
-#define FILENAME_LBIREG "lbireg" /* /proc/comx/comx0.1/lbireg */
-
-#define SLICECOM_BOARDNUM_DEFAULT 0
-
-#define SLICECOM_FRAMING_CRC4 1
-#define SLICECOM_FRAMING_NO_CRC4 2
-#define SLICECOM_FRAMING_DEFAULT SLICECOM_FRAMING_CRC4
-
-#define SLICECOM_LINECODE_HDB3 1
-#define SLICECOM_LINECODE_AMI 2
-#define SLICECOM_LINECODE_DEFAULT SLICECOM_LINECODE_HDB3
-
-#define SLICECOM_CLOCK_SOURCE_LINE 1
-#define SLICECOM_CLOCK_SOURCE_INTERNAL 2
-#define SLICECOM_CLOCK_SOURCE_DEFAULT SLICECOM_CLOCK_SOURCE_LINE
-
-#define SLICECOM_LOOPBACK_NONE 1
-#define SLICECOM_LOOPBACK_LOCAL 2
-#define SLICECOM_LOOPBACK_REMOTE 3
-#define SLICECOM_LOOPBACK_DEFAULT SLICECOM_LOOPBACK_NONE
-
-#define MUNICH_VIRT(addr) (void *)(&bar1[addr])
-
-struct slicecom_stringtable
-{
- char *name;
- int value;
-};
-
-/* A convention: keep "default" the last not NULL when reading from /proc,
- "error" is an indication that something went wrong, we have an undefined value */
-
-struct slicecom_stringtable slicecom_framings[] =
-{
- {"crc4", SLICECOM_FRAMING_CRC4},
- {"no-crc4", SLICECOM_FRAMING_NO_CRC4},
- {"default", SLICECOM_FRAMING_DEFAULT},
- {"error", 0}
-};
-
-struct slicecom_stringtable slicecom_linecodes[] =
-{
- {"hdb3", SLICECOM_LINECODE_HDB3},
- {"ami", SLICECOM_LINECODE_AMI},
- {"default", SLICECOM_LINECODE_DEFAULT},
- {"error", 0}
-};
-
-struct slicecom_stringtable slicecom_clock_sources[] =
-{
- {"line", SLICECOM_CLOCK_SOURCE_LINE},
- {"internal", SLICECOM_CLOCK_SOURCE_INTERNAL},
- {"default", SLICECOM_CLOCK_SOURCE_DEFAULT},
- {"error", 0}
-};
-
-struct slicecom_stringtable slicecom_loopbacks[] =
-{
- {"none", SLICECOM_LOOPBACK_NONE},
- {"local", SLICECOM_LOOPBACK_LOCAL},
- {"remote", SLICECOM_LOOPBACK_REMOTE},
- {"default", SLICECOM_LOOPBACK_DEFAULT},
- {"error", 0}
-};
-
-/*
- * Some tunable values...
- *
- * Note: when tuning values which change the length of text in
- * /proc/comx/comx[n]/status, keep in mind that it must be shorter then
- * PAGESIZE !
- */
-
-#define MAX_BOARDS 4 /* ezzel 4 kartya lehet a gepben: 0..3 */
-#define RX_DESC_MAX 8 /* Rx ring size, must be >= 4 */
-#define TX_DESC_MAX 4 /* Tx ring size, must be >= 2 */
- /* a sokkal hosszabb Tx ring mar ronthatja a nem-FIFO packet */
- /* schedulerek (fair queueing, stb.) hatekonysagat. */
-#define MAX_WORK 10 /* TOD: update the info max. ennyi-1 esemenyt dolgoz fel egy interrupt hivasnal */
-
-/*
- * These are tunable too, but don't touch them without fully understanding what is happening
- */
-
-#define UDELAY 20 /* We wait UDELAY usecs with disabled interrupts before and */
- /* after each command to avoid writing into each other's */
- /* ccb->action_spec. A _send_packet nem var, mert azt az */
- /* _interrupt()-bol is meghivhatja a LINE_tx() */
-
-/*
- * Just to avoid warnings about implicit declarations:
- */
-
-static int MUNICH_close(struct net_device *dev);
-static struct comx_hardware slicecomhw;
-static struct comx_hardware pcicomhw;
-
-static unsigned long flags;
-static spinlock_t mister_lock = SPIN_LOCK_UNLOCKED;
-
-typedef volatile struct /* Time Slot Assignment */
-{
- u32 rxfillmask:8, // ----------------------------+------+
- // | |
- rxchannel:5, // ----------------------+---+ | |
- rti:1, // ---------------------+| | | |
- res2:2, // -------------------++|| | | |
- // |||| | | |
- txfillmask:8, // ----------+------+ |||| | | |
- // | | |||| | | |
- txchannel:5, // ----+---+ | | |||| | | |
- tti:1, // ---+| | | | |||| | | |
- res1:2; // -++|| | | | |||| | | |
- // 3 2 1
- // 10987654 32109876 54321098 76543210
-} timeslot_spec_t;
-
-typedef volatile struct /* Receive Descriptor */
-{
- u32 zero1:16, no:13, hi:1, hold:1, zero2:1;
-
- u32 next;
- u32 data;
-
- u32 zero3:8, status:8, bno:13, zero4:1, c:1, fe:1;
-} rx_desc_t;
-
-typedef volatile struct /* Transmit Descriptor */
-{
- u32 fnum:11, csm:1, no13:1, zero1:2, v110:1, no:13, hi:1, hold:1, fe:1;
-
- u32 next;
- u32 data;
-
-} tx_desc_t;
-
-typedef volatile struct /* Channel Specification */
-{
- u32 iftf:1, mode:2, fa:1, trv:2, crc:1, inv:1, cs:1, tflag:7, ra:1, ro:1,
- th:1, ta:1, to:1, ti:1, ri:1, nitbs:1, fit:1, fir:1, re:1, te:1, ch:1,
- ifc:1, sfe:1, fe2:1;
-
- u32 frda;
- u32 ftda;
-
- u32 itbs:6, zero1:26;
-
-} channel_spec_t;
-
-typedef volatile struct /* Configuration Control Block */
-{
- u32 action_spec;
- u32 reserved1;
- u32 reserved2;
- timeslot_spec_t timeslot_spec[32];
- channel_spec_t channel_spec[32];
- u32 current_rx_desc[32];
- u32 current_tx_desc[32];
- u32 csa; /* Control Start Address. CSA = *CCBA; CCB = *CSA */
- /* MUNICH does it like: CCB = *( *CCBA ) */
-} munich_ccb_t;
-
-typedef volatile struct /* Entry in the interrupt queue */
-{
- u32 all;
-} munich_intq_t;
-
-#define MUNICH_INTQLEN 63 /* Rx/Tx Interrupt Queue Length
- (not the real len, but the TIQL/RIQL value) */
-#define MUNICH_INTQMAX ( 16*(MUNICH_INTQLEN+1) ) /* Rx/Tx/Periph Interrupt Queue size in munich_intq_t's */
-#define MUNICH_INTQSIZE ( 4*MUNICH_INTQMAX ) /* Rx/Tx/Periph Interrupt Queue size in bytes */
-
-#define MUNICH_PIQLEN 4 /* Peripheral Interrupt Queue Length. Unlike the RIQL/TIQL, */
-#define MUNICH_PIQMAX ( 4*MUNICH_PIQLEN ) /* PIQL register needs it like this */
-#define MUNICH_PIQSIZE ( 4*MUNICH_PIQMAX )
-
-typedef volatile u32 vol_u32; /* TOD: ezek megszunnek ha atirom readw()/writew()-re - kész */
-typedef volatile u8 vol_u8;
-
-typedef volatile struct /* counters of E1-errors and errored seconds, see rfc2495 */
-{
- /* use here only unsigned ints, we depend on it when calculating the sum for the last N intervals */
-
- unsigned line_code_violations, /* AMI: bipolar violations, HDB3: hdb3 violations */
- path_code_violations, /* FAS errors and CRC4 errors */
- e_bit_errors, /* E-Bit Errors (the remote side received from us with CRC4-error) */
- slip_secs, /* number of seconds with (receive) Controlled Slip(s) */
- fr_loss_secs, /* number of seconds an Out Of Frame defect was detected */
- line_err_secs, /* number of seconds with one or more Line Code Violations */
- degraded_mins, /* Degraded Minute - the estimated error rate is >1E-6, but <1E-3 */
- errored_secs, /* Errored Second - at least one of these happened:
- - Path Code Violation
- - Out Of Frame defect
- - Slip
- - receiving AIS
- - not incremented during an Unavailable Second */
- bursty_err_secs, /* Bursty Errored Second: (rfc2495 says it does not apply to E1)
- - Path Code Violations >1, but <320
- - not a Severely Errored Second
- - no AIS
- - not incremented during an Unavailabla Second */
- severely_err_secs, /* Severely Errored Second:
- - CRC4: >=832 Path COde Violations || >0 Out Of Frame defects
- - noCRC4: >=2048 Line Code Violations
- - not incremented during an Unavailable Second */
- unavail_secs; /* number of Unavailable Seconds. Unavailable state is said after:
- - 10 contiguous Severely Errored Seconds
- - or RAI || AIS || LOF || LOS
- - (any) loopback has been set */
-
- /*
- * we do not strictly comply to the rfc: we do not retroactively reduce errored_secs,
- * bursty_err_secs, severely_err_secs when 'unavailable state' is reached
- */
-
-} e1_stats_t;
-
-typedef volatile struct /* ezek board-adatok, nem lehetnek a slicecom_privdata -ban */
-{
- int use_count; /* num. of interfaces using the board */
- int irq; /* a kartya irq-ja. belemasoljuk a dev->irq -kba is, de csak hogy */
- /* szebb legyen az ifconfig outputja */
- /* ha != 0, az azt jelenti hogy az az irq most nekunk sikeresen */
- /* le van foglalva */
- struct pci_dev *pci; /* a kartya PCI strukturaja. NULL, ha nincs kartya */
- u32 *bar1; /* pci->base_address[0] ioremap()-ed by munich_probe(), */
- /* on x86 can be used both as a bus or virtual address. */
- /* These are the Munich's registers */
- u8 *lbi; /* pci->base_address[1] ioremap()-ed by munich_probe(), */
- /* this is a 256-byte range, the start of the LBI on the board */
- munich_ccb_t *ccb; /* virtual address of CCB */
- munich_intq_t *tiq; /* Tx Interrupt Queue */
- munich_intq_t *riq; /* Rx Interrupt Queue */
- munich_intq_t *piq; /* Peripheral Interrupt Queue (FALC interrupts arrive here) */
- int tiq_ptr, /* A 'current' helyek a tiq/riq/piq -ban. */
- riq_ptr, /* amikor feldolgoztam az interruptokat, a legelso ures */
- piq_ptr; /* interrupt_information szora mutatnak. */
- struct net_device *twins[32]; /* MUNICH channel -> network interface assignment */
-
- unsigned long lastcheck; /* When were the Rx rings last checked. Time in jiffies */
-
- struct timer_list modemline_timer;
- char isx21;
- char lineup;
- char framing; /* a beallitasok tarolasa */
- char linecode;
- char clock_source;
- char loopback;
-
- char devname[30]; /* what to show in /proc/interrupts */
- unsigned histogram[MAX_WORK]; /* number of processed events in the interrupt loop */
- unsigned stat_pri_races; /* number of special events, we try to handle them */
- unsigned stat_pti_races;
- unsigned stat_pri_races_missed; /* when it can not be handled, because of MAX_WORK */
- unsigned stat_pti_races_missed;
-
-#define SLICECOM_BOARD_INTERVALS_SIZE 97
- e1_stats_t intervals[SLICECOM_BOARD_INTERVALS_SIZE]; /* E1 line statistics */
- unsigned current_interval; /* pointer to the current interval */
- unsigned elapsed_seconds; /* elapsed seconds from the start of the current interval */
- unsigned ses_seconds; /* counter of contiguous Severely Errored Seconds */
- unsigned is_unavailable; /* set to 1 after 10 contiguous Severely Errored Seconds */
- unsigned no_ses_seconds; /* contiguous Severely Error -free seconds in unavail state */
-
- unsigned deg_elapsed_seconds; /* for counting the 'Degraded Mins' */
- unsigned deg_cumulated_errors;
-
- struct module *owner; /* pointer to our module to avoid module load races */
-} munich_board_t;
-
-struct slicecom_privdata
-{
- int busy; /* transmitter busy - number of packets in the Tx ring */
- int channel; /* Munich logical channel ('channel-group' in Cisco) */
- unsigned boardnum;
- u32 timeslots; /* i-th bit means i-th timeslot is our */
-
- int tx_ring_hist[TX_DESC_MAX]; /* histogram: number of packets in Tx ring when _send_packet is called */
-
- tx_desc_t tx_desc[TX_DESC_MAX]; /* the ring of Tx descriptors */
- u8 tx_data[TX_DESC_MAX][TXBUFFER_SIZE]; /* buffers for data to transmit */
- int tx_desc_ptr; /* hanyadik descriptornal tartunk a beirassal */
- /* ahol ez all, oda irtunk utoljara */
-
- rx_desc_t rx_desc[RX_DESC_MAX]; /* the ring of Rx descriptors */
- u8 rx_data[RX_DESC_MAX][RXBUFFER_SIZE]; /* buffers for received data */
- int rx_desc_ptr; /* hanyadik descriptornal tartunk az olvasassal */
-
- int rafutott;
-};
-
-static u32 reg, reg_ertek; /* why static: don't write stack trash into regs if strtoul() fails */
-static u32 lbireg;
-static u8 lbireg_ertek; /* why static: don't write stack trash into regs if strtoul() fails */
-
-static munich_board_t slicecom_boards[MAX_BOARDS];
-static munich_board_t pcicom_boards[MAX_BOARDS];
-
-/*
- * Reprogram Idle Channel Registers in the FALC - send special code in not used channels
- * Should be called from the open and close, when the timeslot assignment changes
- */
-
-void rework_idle_channels(struct net_device *dev)
-{
- struct comx_channel *ch = netdev_priv(dev);
- struct slicecom_privdata *hw = ch->HW_privdata;
- munich_board_t *board = slicecom_boards + hw->boardnum;
- munich_ccb_t *ccb = board->ccb;
-
- u8 *lbi = board->lbi;
- int i, j, tmp;
-
-
- spin_lock_irqsave(&mister_lock, flags);
-
- for (i = 0; i < 4; i++)
- {
- tmp = 0xFF;
- for (j = 0; j < 8; j++)
- if (ccb->timeslot_spec[8 * i + j].tti == 0) tmp ^= (0x80 >> j);
- writeb(tmp, lbi + 0x30 + i);
- }
-
- spin_unlock_irqrestore(&mister_lock, flags);
-}
-
-/*
- * Set PCM framing - /proc/comx/comx0/framing
- */
-
-void slicecom_set_framing(int boardnum, int value)
-{
- u8 *lbi = slicecom_boards[boardnum].lbi;
-
- spin_lock_irqsave(&mister_lock, flags);
-
- slicecom_boards[boardnum].framing = value;
- switch (value)
- {
- case SLICECOM_FRAMING_CRC4:
- writeb(readb(lbi + FMR1) | 8, lbi + FMR1);
- writeb((readb(lbi + FMR2) & 0x3f) | 0x80, lbi + FMR2);
- break;
- case SLICECOM_FRAMING_NO_CRC4:
- writeb(readb(lbi + FMR1) & 0xf7, lbi + FMR1);
- writeb(readb(lbi + FMR2) & 0x3f, lbi + FMR2);
- break;
- default:
- printk("slicecom: board %d: unhandled " FILENAME_FRAMING
- " value %d\n", boardnum, value);
- }
-
- spin_unlock_irqrestore(&mister_lock, flags);
-}
-
-/*
- * Set PCM linecode - /proc/comx/comx0/linecode
- */
-
-void slicecom_set_linecode(int boardnum, int value)
-{
- u8 *lbi = slicecom_boards[boardnum].lbi;
-
- spin_lock_irqsave(&mister_lock, flags);
-
- slicecom_boards[boardnum].linecode = value;
- switch (value)
- {
- case SLICECOM_LINECODE_HDB3:
- writeb(readb(lbi + FMR0) | 0xf0, lbi + FMR0);
- break;
- case SLICECOM_LINECODE_AMI:
- writeb((readb(lbi + FMR0) & 0x0f) | 0xa0, lbi + FMR0);
- break;
- default:
- printk("slicecom: board %d: unhandled " FILENAME_LINECODE
- " value %d\n", boardnum, value);
- }
- spin_unlock_irqrestore(&mister_lock, flags);
-}
-
-/*
- * Set PCM clock source - /proc/comx/comx0/clock_source
- */
-
-void slicecom_set_clock_source(int boardnum, int value)
-{
- u8 *lbi = slicecom_boards[boardnum].lbi;
-
- spin_lock_irqsave(&mister_lock, flags);
-
- slicecom_boards[boardnum].clock_source = value;
- switch (value)
- {
- case SLICECOM_CLOCK_SOURCE_LINE:
- writeb(readb(lbi + LIM0) & ~1, lbi + LIM0);
- break;
- case SLICECOM_CLOCK_SOURCE_INTERNAL:
- writeb(readb(lbi + LIM0) | 1, lbi + LIM0);
- break;
- default:
- printk("slicecom: board %d: unhandled " FILENAME_CLOCK_SOURCE
- " value %d\n", boardnum, value);
- }
- spin_unlock_irqrestore(&mister_lock, flags);
-}
-
-/*
- * Set loopbacks - /proc/comx/comx0/loopback
- */
-
-void slicecom_set_loopback(int boardnum, int value)
-{
- u8 *lbi = slicecom_boards[boardnum].lbi;
-
- spin_lock_irqsave(&mister_lock, flags);
-
- slicecom_boards[boardnum].loopback = value;
- switch (value)
- {
- case SLICECOM_LOOPBACK_NONE:
- writeb(readb(lbi + LIM0) & ~2, lbi + LIM0); /* Local Loop OFF */
- writeb(readb(lbi + LIM1) & ~2, lbi + LIM1); /* Remote Loop OFF */
- break;
- case SLICECOM_LOOPBACK_LOCAL:
- writeb(readb(lbi + LIM1) & ~2, lbi + LIM1); /* Remote Loop OFF */
- writeb(readb(lbi + LIM0) | 2, lbi + LIM0); /* Local Loop ON */
- break;
- case SLICECOM_LOOPBACK_REMOTE:
- writeb(readb(lbi + LIM0) & ~2, lbi + LIM0); /* Local Loop OFF */
- writeb(readb(lbi + LIM1) | 2, lbi + LIM1); /* Remote Loop ON */
- break;
- default:
- printk("slicecom: board %d: unhandled " FILENAME_LOOPBACK
- " value %d\n", boardnum, value);
- }
- spin_unlock_irqrestore(&mister_lock, flags);
-}
-
-/*
- * Update E1 line status LEDs on the adapter
- */
-
-void slicecom_update_leds(munich_board_t * board)
-{
- u32 *bar1 = board->bar1;
- u8 *lbi = board->lbi;
- u8 frs0;
- u32 leds;
- int i;
-
- spin_lock_irqsave(&mister_lock, flags);
-
- leds = 0;
- frs0 = readb(lbi + FRS0); /* FRS0 bits described on page 137 */
-
- if (!(frs0 & 0xa0))
- {
- leds |= 0x2000; /* Green LED: Input signal seems to be OK, no LOS, no LFA */
- if (frs0 & 0x10)
- leds |= 0x8000; /* Red LED: Receiving Remote Alarm */
- }
- writel(leds, MUNICH_VIRT(GPDATA));
-
- if (leds == 0x2000 && !board->lineup)
- { /* line up */
- board->lineup = 1;
- for (i = 0; i < 32; i++)
- {
- if (board->twins[i] && (board->twins[i]->flags & IFF_RUNNING))
- {
- struct comx_channel *ch = board->twins[i]->priv;
-
- if (!test_and_set_bit(0, &ch->lineup_pending))
- {
- ch->lineup_timer.function = comx_lineup_func;
- ch->lineup_timer.data = (unsigned long)board->twins[i];
- ch->lineup_timer.expires = jiffies + HZ * ch->lineup_delay;
- add_timer(&ch->lineup_timer);
- }
- }
- }
- }
- else if (leds != 0x2000 && board->lineup)
- { /* line down */
- board->lineup = 0;
- for (i = 0; i < 32; i++)
- if (board->twins[i] && (board->twins[i]->flags & IFF_RUNNING))
- {
- struct comx_channel *ch = board->twins[i]->priv;
-
- if (test_and_clear_bit(0, &ch->lineup_pending))
- del_timer(&ch->lineup_timer);
- else if (ch->line_status & LINE_UP)
- {
- ch->line_status &= ~LINE_UP;
- if (ch->LINE_status)
- ch->LINE_status(board->twins[i], ch->line_status);
- }
- }
- }
- spin_unlock_irqrestore(&mister_lock, flags);
-}
-
-/*
- * This function gets called every second when the FALC issues the interrupt.
- * Hardware counters contain error counts for last 1-second time interval.
- * We add them to the global counters here.
- * Read rfc2495 to understand this.
- */
-
-void slicecom_update_line_counters(munich_board_t * board)
-{
- e1_stats_t *curr_int = &board->intervals[board->current_interval];
-
- u8 *lbi = board->lbi;
-
- unsigned framing_errors, code_violations, path_code_violations, crc4_errors,
- e_bit_errors;
- unsigned slip_detected, /* this one has logical value, not the number of slips! */
- out_of_frame_defect, /* logical value */
- ais_defect, /* logical value */
- errored_sec, bursty_err_sec, severely_err_sec = 0, failure_sec;
- u8 isr2, isr3, isr5, frs0;
-
- spin_lock_irqsave(&mister_lock, flags);
-
- isr2 = readb(lbi + ISR2); /* ISR0-5 described on page 156 */
- isr3 = readb(lbi + ISR3);
- isr5 = readb(lbi + ISR5);
- frs0 = readb(lbi + FRS0); /* FRS0 described on page 137 */
-
- /* Error Events: */
-
- code_violations = readb(lbi + CVCL) + (readb(lbi + CVCH) << 8);
- framing_errors = readb(lbi + FECL) + (readb(lbi + FECH) << 8);
- crc4_errors = readb(lbi + CEC1L) + (readb(lbi + CEC1H) << 8);
- e_bit_errors = readb(lbi + EBCL) + (readb(lbi + EBCH) << 8);
- slip_detected = isr3 & (ISR3_RSN | ISR3_RSP);
-
- path_code_violations = framing_errors + crc4_errors;
-
- curr_int->line_code_violations += code_violations;
- curr_int->path_code_violations += path_code_violations;
- curr_int->e_bit_errors += e_bit_errors;
-
- /* Performance Defects: */
-
- /* there was an LFA in the last second, but maybe disappeared: */
- out_of_frame_defect = (isr2 & ISR2_LFA) || (frs0 & FRS0_LFA);
-
- /* there was an AIS in the last second, but maybe disappeared: */
- ais_defect = (isr2 & ISR2_AIS) || (frs0 & FRS0_AIS);
-
- /* Performance Parameters: */
-
- if (out_of_frame_defect)
- curr_int->fr_loss_secs++;
- if (code_violations)
- curr_int->line_err_secs++;
-
- errored_sec = ((board->framing == SLICECOM_FRAMING_NO_CRC4) &&
- (code_violations)) || path_code_violations ||
- out_of_frame_defect || slip_detected || ais_defect;
-
- bursty_err_sec = !out_of_frame_defect && !ais_defect &&
- (path_code_violations > 1) && (path_code_violations < 320);
-
- switch (board->framing)
- {
- case SLICECOM_FRAMING_CRC4:
- severely_err_sec = out_of_frame_defect ||
- (path_code_violations >= 832);
- break;
- case SLICECOM_FRAMING_NO_CRC4:
- severely_err_sec = (code_violations >= 2048);
- break;
- }
-
- /*
- * failure_sec: true if there was a condition leading to a failure
- * (and leading to unavailable state) in this second:
- */
-
- failure_sec = (isr2 & ISR2_RA) || (frs0 & FRS0_RRA) /* Remote/Far End/Distant Alarm Failure */
- || ais_defect || out_of_frame_defect /* AIS or LOF Failure */
- || (isr2 & ISR2_LOS) || (frs0 & FRS0_LOS) /* Loss Of Signal Failure */
- || (board->loopback != SLICECOM_LOOPBACK_NONE); /* Loopback has been set */
-
- if (board->is_unavailable)
- {
- if (severely_err_sec)
- board->no_ses_seconds = 0;
- else
- board->no_ses_seconds++;
-
- if ((board->no_ses_seconds >= 10) && !failure_sec)
- {
- board->is_unavailable = 0;
- board->ses_seconds = 0;
- board->no_ses_seconds = 0;
- }
- }
- else
- {
- if (severely_err_sec)
- board->ses_seconds++;
- else
- board->ses_seconds = 0;
-
- if ((board->ses_seconds >= 10) || failure_sec)
- {
- board->is_unavailable = 1;
- board->ses_seconds = 0;
- board->no_ses_seconds = 0;
- }
- }
-
- if (board->is_unavailable)
- curr_int->unavail_secs++;
- else
- {
- if (slip_detected)
- curr_int->slip_secs++;
- curr_int->errored_secs += errored_sec;
- curr_int->bursty_err_secs += bursty_err_sec;
- curr_int->severely_err_secs += severely_err_sec;
- }
-
- /* the RFC does not say clearly which errors to count here, we try to count bit errors */
-
- if (!board->is_unavailable && !severely_err_sec)
- {
- board->deg_cumulated_errors += code_violations;
- board->deg_elapsed_seconds++;
- if (board->deg_elapsed_seconds >= 60)
- {
- if (board->deg_cumulated_errors >= 123)
- curr_int->degraded_mins++;
- board->deg_cumulated_errors = 0;
- board->deg_elapsed_seconds = 0;
- }
-
- }
-
- board->elapsed_seconds++;
- if (board->elapsed_seconds >= 900)
- {
- board->current_interval =
- (board->current_interval + 1) % SLICECOM_BOARD_INTERVALS_SIZE;
- memset((void *)&board->intervals[board->current_interval], 0,
- sizeof(e1_stats_t));
- board->elapsed_seconds = 0;
- }
-
- spin_unlock_irqrestore(&mister_lock, flags);
-}
-
-static void pcicom_modemline(unsigned long b)
-{
- munich_board_t *board = (munich_board_t *) b;
- struct net_device *dev = board->twins[0];
- struct comx_channel *ch = netdev_priv(dev);
- unsigned long regs;
-
- regs = readl((void *)(&board->bar1[GPDATA]));
- if ((ch->line_status & LINE_UP) && (regs & 0x0800))
- {
- ch->line_status &= ~LINE_UP;
- board->lineup = 0;
- if (ch->LINE_status)
- {
- ch->LINE_status(dev, ch->line_status);
- }
- }
-
- if (!(ch->line_status & LINE_UP) && !(regs & 0x0800))
- {
- ch->line_status |= LINE_UP;
- board->lineup = 1;
- if (ch->LINE_status)
- {
- ch->LINE_status(dev, ch->line_status);
- }
- }
-
- mod_timer((struct timer_list *)&board->modemline_timer, jiffies + HZ);
-}
-
-/*
- * Is it possible to transmit ?
- * Called (may be called) by the protocol layer
- */
-
-static int MUNICH_txe(struct net_device *dev)
-{
- struct comx_channel *ch = netdev_priv(dev);
- struct slicecom_privdata *hw = ch->HW_privdata;
-
- return (hw->busy < TX_DESC_MAX - 1);
-}
-
-/*
- * Hw probe function. Detects all the boards in the system,
- * and fills up slicecom_boards[] and pcicom_boards[]
- * Returns 0 on success.
- * We do not disable interrupts!
- */
-static int munich_probe(void)
-{
- struct pci_dev *pci;
- int boardnum;
- int slicecom_boardnum;
- int pcicom_boardnum;
- u32 *bar1;
- u8 *lbi;
- munich_board_t *board;
-
- for (boardnum = 0; boardnum < MAX_BOARDS; boardnum++)
- {
- pcicom_boards[boardnum].pci = 0;
- pcicom_boards[boardnum].bar1 = 0;
- pcicom_boards[boardnum].lbi = 0;
- slicecom_boards[boardnum].pci = 0;
- slicecom_boards[boardnum].bar1 = 0;
- slicecom_boards[boardnum].lbi = 0;
- }
-
- pci = NULL;
- board = NULL;
- slicecom_boardnum = 0;
- pcicom_boardnum = 0;
-
- for (boardnum = 0;
- boardnum < MAX_BOARDS && (pci = pci_find_device(PCI_VENDOR_ID_SIEMENS,
- PCI_DEVICE_ID_SIEMENS_MUNICH32X, pci)); boardnum++)
- {
- if (pci_enable_device(pci))
- continue;
-
- printk("munich_probe: munich chip found, IRQ %d\n", pci->irq);
-
- bar1 = ioremap_nocache(pci->resource[0].start, 0x100);
- lbi = ioremap_nocache(pci->resource[1].start, 0x100);
-
- if (bar1 && lbi)
- {
- pci_write_config_dword(pci, MUNICH_PCI_PCIRES, 0xe0000);
- set_current_state(TASK_UNINTERRUPTIBLE);
- schedule_timeout(1);
- pci_write_config_dword(pci, MUNICH_PCI_PCIRES, 0);
- set_current_state(TASK_UNINTERRUPTIBLE);
- schedule_timeout(1);
- /* check the type of the card */
- writel(LREG0_MAGIC, MUNICH_VIRT(LREG0));
- writel(LREG1_MAGIC, MUNICH_VIRT(LREG1));
- writel(LREG2_MAGIC, MUNICH_VIRT(LREG2));
- writel(LREG3_MAGIC, MUNICH_VIRT(LREG3));
- writel(LREG4_MAGIC, MUNICH_VIRT(LREG4));
- writel(LREG5_MAGIC, MUNICH_VIRT(LREG5));
- writel(LCONF_MAGIC2,MUNICH_VIRT(LCONF)); /* enable the DMSM */
-
- if ((readb(lbi + VSTR) == 0x13) || (readb(lbi + VSTR) == 0x10))
- {
- board = slicecom_boards + slicecom_boardnum;
- sprintf((char *)board->devname, "slicecom%d",
- slicecom_boardnum);
- board->isx21 = 0;
- slicecom_boardnum++;
- }
- else if ((readb(lbi + VSTR) == 0x6) || (readb(lbi + GIS) == 0x6))
- {
- board = pcicom_boards + pcicom_boardnum;
- sprintf((char *)board->devname, "pcicom%d", pcicom_boardnum);
- board->isx21 = 1;
- pcicom_boardnum++;
- }
- if (board)
- {
- printk("munich_probe: %s board found\n", board->devname);
- writel(LCONF_MAGIC1, MUNICH_VIRT(LCONF)); /* reset the DMSM */
- board->pci = pci;
- board->bar1 = bar1;
- board->lbi = lbi;
- board->framing = SLICECOM_FRAMING_DEFAULT;
- board->linecode = SLICECOM_LINECODE_DEFAULT;
- board->clock_source = SLICECOM_CLOCK_SOURCE_DEFAULT;
- board->loopback = SLICECOM_LOOPBACK_DEFAULT;
- board->owner = THIS_MODULE;
- }
- else
- {
- printk("munich_probe: Board error, VSTR: %02X\n",
- readb(lbi + VSTR));
- iounmap((void *)bar1);
- iounmap((void *)lbi);
- }
- }
- else
- {
- printk("munich_probe: ioremap() failed, not enabling this board!\n");
- /* .pci = NULL, so the MUNICH_open will not try to open it */
- if (bar1) iounmap((void *)bar1);
- if (lbi) iounmap((void *)lbi);
- }
- }
-
- if (!pci && !boardnum)
- {
- printk("munich_probe: no PCI present!\n");
- return -ENODEV;
- }
-
- if (pcicom_boardnum + slicecom_boardnum == 0)
- {
- printk
- ("munich_probe: Couldn't find any munich board: vendor:device %x:%x not found\n",
- PCI_VENDOR_ID_SIEMENS, PCI_DEVICE_ID_SIEMENS_MUNICH32X);
- return -ENODEV;
- }
-
- /* Found some */
- if (pcicom_boardnum)
- printk("%d pcicom board(s) found.\n", pcicom_boardnum);
- if (slicecom_boardnum)
- printk("%d slicecom board(s) found.\n", slicecom_boardnum);
-
- return 0;
-}
-
-/*
- * Reset the hardware. Get called only from within this module if needed.
- */
-#if 0
-static int slicecom_reset(struct net_device *dev)
-{
- struct comx_channel *ch = netdev_priv(dev);
-
- printk("slicecom_reset: resetting the hardware\n");
-
- /* Begin to reset the hardware */
-
- if (ch->HW_set_clock)
- ch->HW_set_clock(dev);
-
- /* And finish it */
-
- return 0;
-}
-#endif
-
-/*
- * Transmit a packet.
- * Called by the protocol layer
- * Return values:
- * FRAME_ACCEPTED: frame is being transmited, transmitter is busy
- * FRAME_QUEUED: frame is being transmitted, there's more room in
- * the transmitter for additional packet(s)
- * FRAME_ERROR:
- * FRAME_DROPPED: there was some error
- */
-
-static int MUNICH_send_packet(struct net_device *dev, struct sk_buff *skb)
-{
- struct comx_channel *ch = netdev_priv(dev);
- struct slicecom_privdata *hw = ch->HW_privdata;
-
- /* Send it to the debug facility too if needed: */
-
- if (ch->debug_flags & DEBUG_HW_TX)
- comx_debug_bytes(dev, skb->data, skb->len, "MUNICH_send_packet");
-
- /* If the line is inactive, don't accept: */
-
- /* TODO: atgondolni hogy mi is legyen itt */
- /* if (!(ch->line_status & LINE_UP)) return FRAME_DROPPED; */
-
- /* More check, to be sure: */
-
- if (skb->len > TXBUFFER_SIZE)
- {
- ch->stats.tx_errors++;
- kfree_skb(skb);
- return FRAME_ERROR;
- }
-
- /* Maybe you have to disable irq's while programming the hw: */
-
- spin_lock_irqsave(&mister_lock, flags);
-
- /* And more check: */
-
- if (hw->busy >= TX_DESC_MAX - 1)
- {
- printk(KERN_ERR
- "%s: Transmitter called while busy... dropping frame, busy = %d\n",
- dev->name, hw->busy);
- spin_unlock_irqrestore(&mister_lock, flags);
- kfree_skb(skb);
- return FRAME_DROPPED;
- }
-
- if (hw->busy >= 0)
- hw->tx_ring_hist[hw->busy]++;
- /* DELL: */
- else
- printk("slicecom: %s: FATAL: busy = %d\n", dev->name, hw->busy);
-
-// /* DEL: */
-// printk("slicecom: %s: _send_packet called, busy = %d\n", dev->name, hw->busy );
-
- /* Packet can go, update stats: */
-
- ch->stats.tx_packets++;
- ch->stats.tx_bytes += skb->len;
-
- /* Pass the packet to the HW: */
- /* Step forward with the transmit descriptors: */
-
- hw->tx_desc_ptr = (hw->tx_desc_ptr + 1) % TX_DESC_MAX;
-
- memcpy(&(hw->tx_data[hw->tx_desc_ptr][0]), skb->data, skb->len);
- hw->tx_desc[hw->tx_desc_ptr].no = skb->len;
-
- /* We don't issue any command, just step with the HOLD bit */
-
- hw->tx_desc[hw->tx_desc_ptr].hold = 1;
- hw->tx_desc[(hw->tx_desc_ptr + TX_DESC_MAX - 1) % TX_DESC_MAX].hold = 0;
-
-#ifdef COMX_NEW
- dev_kfree_skb(skb);
-#endif
- /* csomag kerult a Tx ringbe: */
-
- hw->busy++;
-
- /* Report it: */
-
- if (ch->debug_flags & DEBUG_HW_TX)
- comx_debug(dev, "%s: MUNICH_send_packet was successful\n\n", dev->name);
-
- if (hw->busy >= TX_DESC_MAX - 1)
- {
- spin_unlock_irqrestore(&mister_lock, flags);
- return FRAME_ACCEPTED;
- }
-
- spin_unlock_irqrestore(&mister_lock, flags);
-
- /* All done */
-
- return FRAME_QUEUED;
-}
-
-/*
- * Interrupt handler routine.
- * Called by the Linux kernel.
- * BEWARE! The interrupts are enabled on the call!
- */
-static irqreturn_t MUNICH_interrupt(int irq, void *dev_id, struct pt_regs *regs)
-{
- struct sk_buff *skb;
- int length;
- int rx_status;
- int work; /* hany esemenyt kezeltem mar le */
- u32 *bar1;
- u8 *lbi;
- u32 stat, /* az esemenyek, amiket a ebben a loop korben le kell meg kezelni */
- race_stat = 0, /* race eseten ebben uzenek magamnak hogy mit kell meg lekezelni */
- ack; /* ezt fogom a vegen a STAT-ba irni, kiveszek belole 1-1 bitet ha */
-
- /* az adott dolgot nem kell ack-olni mert volt vele munkam, es */
- /* legjobb ha visszaterek ide megegyszer */
- munich_intq_t int_info;
-
- struct net_device *dev;
- struct comx_channel *ch;
- struct slicecom_privdata *hw;
- munich_board_t *board = (munich_board_t *) dev_id;
- int channel;
-
- // , boardnum = (int)dev_id;
-
- // board = munich_boards + boardnum;
- bar1 = board->bar1;
- lbi = board->lbi;
-
- // Do not uncomment this under heavy load! :->
- // printk("MUNICH_interrupt: masked STAT=0x%08x, tiq=0x%08x, riq=0x%08x, piq=0x%08x\n", stat, board->tiq[0].all, board->riq[0].all, board->piq[0].all );
-
- for (work = 0; (stat = (race_stat | (readl(MUNICH_VIRT(STAT)) & ~STAT_NOT_HANDLED_BY_INTERRUPT))) && (work < MAX_WORK - 1); work++)
- {
- ack = stat & (STAT_PRI | STAT_PTI | STAT_LBII);
-
- /* Handle the interrupt information in the Rx queue. We don't really trust */
- /* info from this queue, because it can be overflowed, so later check */
- /* every Rx ring for received packets. But there are some errors which can't */
- /* be counted from the Rx rings, so we parse it. */
-
- int_info = board->riq[board->riq_ptr];
- if (int_info.all & 0xF0000000) /* ha ez nem 0, akkor itt interrupt_info van */
- {
- ack &= ~STAT_PRI; /* don't ack the interrupt, we had some work to do */
-
- channel = PCM_INT_CHANNEL(int_info.all);
- dev = board->twins[channel];
-
- if (dev == NULL)
- {
- printk
- ("MUNICH_interrupt: got an Rx interrupt info for NULL device "
- "%s.twins[%d], int_info = 0x%08x\n", board->devname,
- channel, int_info.all);
- goto go_for_next_interrupt;
- }
-
- ch = netdev_priv(dev);
- hw = (struct slicecom_privdata *)ch->HW_privdata;
-
- // printk("Rx STAT=0x%08x int_info=0x%08x rx_desc_ptr=%d rx_desc.status=0x%01x\n",
- // stat, int_info.all, hw->rx_desc_ptr, hw->rx_desc[ hw->rx_desc_ptr ].status );
-
- if (int_info.all & PCM_INT_HI)
- printk("SliceCOM: %s: Host Initiated interrupt\n", dev->name);
- if (int_info.all & PCM_INT_IFC)
- printk("SliceCOM: %s: Idle/Flag Change\n", dev->name);
- /* TOD: jo ez az Idle/Flag Change valamire? - azonnal latszik belole hogy mikor ad a masik oldal */
- /* TOD: ilyen IT most nem is jon, mert ki van maszkolva az interrupt, biztosan kell ez? */
-
- if (int_info.all & PCM_INT_FO)
- /* Internal buffer (RB) overrun */
- ch->stats.rx_over_errors++; /* TOD: Ez azt jelenti hogy a belso RB nem volt hozzaferheto, es ezert kihagyott valamit. De nem csak csomag lehetett, hanem esemeny, stb. is. lasd page 247. Ezzel a 'cat status'-hoz igazodok, de a netdevice.h szerint nem egyertelmu hogy ide ez kellene. Nem lehet hogy rx_missed ? */
- /* DE: nem gotozok sehova, elvileg jo igy */
- /* kesobb meg visszaterek az FO-ra, ha packet-FO volt. Keresd a "packet-FO"-t. */
- if (int_info.all & PCM_INT_FI) /* frame received, but we do not trust the int_info queue */
- if (int_info.all & PCM_INT_SF)
- { /* Short Frame: rovidebb mint a CRC */
- /* "rovidebb mint CRC+2byte" vizsgalat a "CRC+2"-nel */
- ch->stats.rx_length_errors++; /* TOD: noveljem? ne noveljem? */
- goto go_for_next_interrupt;
- }
-
- go_for_next_interrupt: /* One step in the interrupt queue */
- board->riq[board->riq_ptr].all = 0; /* megjelolom hogy itt meg nem jart a hw */
- board->riq_ptr = (board->riq_ptr + 1) % MUNICH_INTQMAX;
-
- }
-
- /* Check every Rx ring for incomed packets: */
-
- for (channel = 0; channel < 32; channel++)
- {
- dev = board->twins[channel];
-
- if (dev != NULL)
- {
- ch = netdev_priv(dev);
- hw = (struct slicecom_privdata *)ch->HW_privdata;
-
- rx_status = hw->rx_desc[hw->rx_desc_ptr].status;
-
- if (!(rx_status & 0x80)) /* mar jart itt a hardver */
- {
- ack &= ~STAT_PRI; /* Don't ack, we had some work */
-
- /* Ez most egy kicsit zuros, mert itt mar nem latom az int_infot */
- if (rx_status & RX_STATUS_ROF)
- ch->stats.rx_over_errors++; /* TOD: 'cat status'-hoz igazodok */
-
- if (rx_status & RX_STATUS_RA)
- /* Abort received or issued on channel */
- ch->stats.rx_frame_errors++; /* or HOLD bit in the descriptor */
- /* TOD: 'cat status'-hoz igazodok */
-
- if (rx_status & RX_STATUS_LFD)
- { /* Long Frame (longer then MFL in the MODE1) */
- ch->stats.rx_length_errors++;
- goto go_for_next_frame;
- }
-
- if (rx_status & RX_STATUS_NOB)
- { /* Not n*8 bits long frame - frame alignment */
- ch->stats.rx_frame_errors++; /* ez viszont nem igazodik a 'cat status'-hoz */
- goto go_for_next_frame;
- }
-
- if (rx_status & RX_STATUS_CRCO)
- { /* CRC error */
- ch->stats.rx_crc_errors++;
- goto go_for_next_frame;
- }
-
- if (rx_status & RX_STATUS_SF)
- { /* Short Frame: rovidebb mint CRC+2byte */
- ch->stats.rx_errors++; /* The HW does not set PCI_INT_ERR bit for this one, see page 246 */
- ch->stats.rx_length_errors++;
- goto go_for_next_frame;
- }
-
- if (rx_status != 0)
- {
- printk("SliceCOM: %s: unhandled rx_status: 0x%02x\n",
- dev->name, rx_status);
- goto go_for_next_frame;
- }
-
- /* frame received without errors: */
-
- length = hw->rx_desc[hw->rx_desc_ptr].bno;
- ch->stats.rx_packets++; /* Count only 'good' packets */
- ch->stats.rx_bytes += length;
-
- /* Allocate a larger skb and reserve the heading for efficiency: */
-
- if ((skb = dev_alloc_skb(length + 16)) == NULL)
- {
- ch->stats.rx_dropped++;
- goto go_for_next_frame;
- }
-
- /* Do bookkeeping: */
-
- skb_reserve(skb, 16);
- skb_put(skb, length);
- skb->dev = dev;
-
- /* Now copy the data into the buffer: */
-
- memcpy(skb->data, &(hw->rx_data[hw->rx_desc_ptr][0]), length);
-
- /* DEL: UGLY HACK!!!! */
- if (*((int *)skb->data) == 0x02000000 &&
- *(((int *)skb->data) + 1) == 0x3580008f)
- {
- printk("%s: swapping hack\n", dev->name);
- *((int *)skb->data) = 0x3580008f;
- *(((int *)skb->data) + 1) = 0x02000000;
- }
-
- if (ch->debug_flags & DEBUG_HW_RX)
- comx_debug_skb(dev, skb, "MUNICH_interrupt receiving");
-
- /* Pass it to the protocol entity: */
-
- ch->LINE_rx(dev, skb);
-
- go_for_next_frame:
- /* DEL: rafutott-e a HOLD bitre -detektalas */
- {
- if( ((rx_desc_t*)phys_to_virt(board->ccb->current_rx_desc[channel]))->hold
- && ((rx_desc_t*)phys_to_virt(board->ccb->current_rx_desc[channel]))->status != 0xff)
- hw->rafutott++; /* rafutott: hanyszor volt olyan hogy a current descriptoron HOLD bit volt, es a hw mar befejezte az irast (azaz a hw rafutott a HOLD bitre) */
- }
-
- // if( jiffies % 2 ) /* DELL: okozzunk egy kis Rx ring slipet :) */
- // {
- /* Step forward with the receive descriptors: */
- /* if you change this, change the copy of it below too! Search for: "RxSlip" */
- hw->rx_desc[(hw->rx_desc_ptr + RX_DESC_MAX - 1) % RX_DESC_MAX].hold = 1;
- hw->rx_desc[hw->rx_desc_ptr].status = 0xFF; /* megjelolom hogy itt meg nem jart a hw */
- hw->rx_desc[(hw->rx_desc_ptr + RX_DESC_MAX - 2) % RX_DESC_MAX].hold = 0;
- hw->rx_desc_ptr = (hw->rx_desc_ptr + 1) % RX_DESC_MAX;
- // }
- }
- }
- }
-
- stat &= ~STAT_PRI;
-
-// }
-
-// if( stat & STAT_PTI ) /* TOD: primko megvalositas: mindig csak egy esemenyt dolgozok fel, */
- /* es nem torlom a STAT-ot, ezert ujra visszajon ide a rendszer. Amikor */
- /* jon interrupt, de nincs mit feldolgozni, akkor torlom a STAT-ot. */
- /* 'needs a rewrite', de elso megoldasnak jo lesz */
-// {
- int_info = board->tiq[board->tiq_ptr];
- if (int_info.all & 0xF0000000) /* ha ez nem 0, akkor itt interrupt_info van */
- {
- ack &= ~STAT_PTI; /* don't ack the interrupt, we had some work to do */
-
- channel = PCM_INT_CHANNEL(int_info.all);
- dev = board->twins[channel];
-
- if (dev == NULL)
- {
- printk("MUNICH_interrupt: got a Tx interrupt for NULL device "
- "%s.twins[%d], int_info = 0x%08x\n",
- board->isx21 ? "pcicom" : "slicecom", channel, int_info.all);
- goto go_for_next_tx_interrupt;
- }
-
- ch = netdev_priv(dev);
- hw = (struct slicecom_privdata *)ch->HW_privdata;
-
- // printk("Tx STAT=0x%08x int_info=0x%08x tiq_ptr=%d\n", stat, int_info.all, board->tiq_ptr );
-
- if (int_info.all & PCM_INT_FE2)
- { /* "Tx available" */
- /* do nothing */
- }
- else if (int_info.all & PCM_INT_FO)
- { /* Internal buffer (RB) overrun */
- ch->stats.rx_over_errors++;
- }
- else
- {
- printk("slicecom: %s: unhandled Tx int_info: 0x%08x\n",
- dev->name, int_info.all);
- }
-
- go_for_next_tx_interrupt:
- board->tiq[board->tiq_ptr].all = 0;
- board->tiq_ptr = (board->tiq_ptr + 1) % MUNICH_INTQMAX;
- }
-
- /* Check every Tx ring for incoming packets: */
-
- for (channel = 0; channel < 32; channel++)
- {
- dev = board->twins[channel];
-
- if (dev != NULL)
- {
- int newbusy;
-
- ch = netdev_priv(dev);
- hw = (struct slicecom_privdata *)ch->HW_privdata;
-
- /* We don't trust the "Tx available" info from the TIQ, but check */
- /* every ring if there is some free room */
-
- if (ch->init_status && netif_running(dev))
- {
- newbusy = ( TX_DESC_MAX + (& hw->tx_desc[ hw->tx_desc_ptr ]) -
- (tx_desc_t*)phys_to_virt(board->ccb->current_tx_desc[ hw->channel ]) ) % TX_DESC_MAX;
-
- if(newbusy < 0)
- {
- printk("slicecom: %s: FATAL: fresly computed busy = %d, HW: 0x%p, SW: 0x%p\n",
- dev->name, newbusy,
- phys_to_virt(board->ccb->current_tx_desc[hw->channel]),
- & hw->tx_desc[hw->tx_desc_ptr]);
- }
-
- /* Fogyott valami a Tx ringbol? */
-
- if (newbusy < hw->busy)
- {
- // ack &= ~STAT_PTI; /* Don't ack, we had some work */
- hw->busy = newbusy;
- if (ch->LINE_tx)
- ch->LINE_tx(dev); /* Report it to protocol driver */
- }
- else if (newbusy > hw->busy)
- printk("slicecom: %s: newbusy > hw->busy, this should not happen!\n", dev->name);
- }
- }
- }
- stat &= ~STAT_PTI;
-
- int_info = board->piq[board->piq_ptr];
- if (int_info.all & 0xF0000000) /* ha ez nem 0, akkor itt interrupt_info van */
- {
- ack &= ~STAT_LBII; /* don't ack the interrupt, we had some work to do */
-
- /* We do not really use (yet) the interrupt info from this queue, */
-
- // printk("slicecom: %s: LBI Interrupt event: %08x\n", board->devname, int_info.all);
-
- if (!board->isx21)
- {
- slicecom_update_leds(board);
- slicecom_update_line_counters(board);
- }
-
- goto go_for_next_lbi_interrupt; /* To avoid warning about unused label */
-
- go_for_next_lbi_interrupt: /* One step in the interrupt queue */
- board->piq[board->piq_ptr].all = 0; /* megjelolom hogy itt meg nem jart a hw */
- board->piq_ptr = (board->piq_ptr + 1) % MUNICH_PIQMAX;
- }
- stat &= ~STAT_LBII;
-
- writel(ack, MUNICH_VIRT(STAT));
-
- if (stat & STAT_TSPA)
- {
- // printk("slicecom: %s: PCM TSP Asynchronous\n", board->devname);
- writel(STAT_TSPA, MUNICH_VIRT(STAT));
- stat &= ~STAT_TSPA;
- }
-
- if (stat & STAT_RSPA)
- {
- // printk("slicecom: %s: PCM RSP Asynchronous\n", board->devname);
- writel(STAT_RSPA, MUNICH_VIRT(STAT));
- stat &= ~STAT_RSPA;
- }
- if (stat)
- {
- printk("MUNICH_interrupt: unhandled interrupt, STAT=0x%08x\n",
- stat);
- writel(stat, MUNICH_VIRT(STAT)); /* ha valamit megsem kezeltunk le, azert ack-ot kuldunk neki */
- }
-
- }
- board->histogram[work]++;
-
- /* We can miss these if we reach the MAX_WORK */
- /* Count it to see how often it happens */
-
- if (race_stat & STAT_PRI)
- board->stat_pri_races_missed++;
- if (race_stat & STAT_PTI)
- board->stat_pti_races_missed++;
- return IRQ_HANDLED;
-}
-
-/*
- * Hardware open routine.
- * Called by comx (upper) layer when the user wants to bring up the interface
- * with ifconfig.
- * Initializes hardware, allocates resources etc.
- * Returns 0 on OK, or standard error value on error.
- */
-
-static int MUNICH_open(struct net_device *dev)
-{
- struct comx_channel *ch = netdev_priv(dev);
- struct slicecom_privdata *hw = ch->HW_privdata;
- struct proc_dir_entry *procfile = ch->procdir->subdir;
- munich_board_t *board;
- munich_ccb_t *ccb;
-
- u32 *bar1;
- u8 *lbi;
- u32 stat;
- unsigned long flags, jiffs;
-
- int i, channel;
- u32 timeslots = hw->timeslots;
-
- board = hw->boardnum + (ch->hardware == &pcicomhw ? pcicom_boards : slicecom_boards);
-
- bar1 = board->bar1;
- lbi = board->lbi;
-
- /* TODO: a timeslotok ellenorzese kell majd ide .. hat, biztos? mar a write_proc-ban is
- ellenorzom valamennyire.
- if (!dev->io || !dev->irq) return -ENODEV;
- */
-
- if (!board->pci)
- {
- printk("MUNICH_open: no %s board with boardnum = %d\n",
- ch->hardware->name, hw->boardnum);
- return -ENODEV;
- }
-
- spin_lock_irqsave(&mister_lock, flags);
- /* lock the section to avoid race with multiple opens and make sure
- that no interrupts get called while this lock is active */
-
- if (board->use_count == 0) /* bring up the board if it was unused */
- /* if fails, frees allocated resources and returns. */
- /* TOD: is it safe? nem kellene resetelni a kartyat? */
- {
- printk("MUNICH_open: %s: bringing up board\n", board->devname);
-
- /* Clean up the board's static struct if messed: */
-
- for (i = 0; i < 32; i++)
- board->twins[i] = NULL;
- for (i = 0; i < MAX_WORK; i++)
- board->histogram[i] = 0;
-
- board->lineup = 0;
-
- /* Allocate CCB: */
- board->ccb = kmalloc(sizeof(munich_ccb_t), GFP_KERNEL);
- if (board->ccb == NULL)
- {
- spin_unlock_irqrestore(&mister_lock, flags);
- return -ENOMEM;
- }
- memset((void *)board->ccb, 0, sizeof(munich_ccb_t));
- board->ccb->csa = virt_to_phys(board->ccb);
- ccb = board->ccb;
- for (i = 0; i < 32; i++)
- {
- ccb->timeslot_spec[i].tti = 1;
- ccb->timeslot_spec[i].rti = 1;
- }
-
- /* Interrupt queues: */
-
- board->tiq = kmalloc(MUNICH_INTQSIZE, GFP_KERNEL);
- if (board->tiq == NULL)
- {
- spin_unlock_irqrestore(&mister_lock, flags);
- return -ENOMEM;
- }
- memset((void *)board->tiq, 0, MUNICH_INTQSIZE);
-
- board->riq = kmalloc(MUNICH_INTQSIZE, GFP_KERNEL);
- if (board->riq == NULL)
- {
- spin_unlock_irqrestore(&mister_lock, flags);
- return -ENOMEM;
- }
- memset((void *)board->riq, 0, MUNICH_INTQSIZE);
-
- board->piq = kmalloc(MUNICH_PIQSIZE, GFP_KERNEL);
- if (board->piq == NULL)
- {
- spin_unlock_irqrestore(&mister_lock, flags);
- return -ENOMEM;
- }
- memset((void *)board->piq, 0, MUNICH_PIQSIZE);
-
- board->tiq_ptr = 0;
- board->riq_ptr = 0;
- board->piq_ptr = 0;
-
- /* Request irq: */
-
- board->irq = 0;
-
- /* (char*) cast to avoid warning about discarding volatile: */
- if (request_irq(board->pci->irq, MUNICH_interrupt, 0,
- (char *)board->devname, (void *)board))
- {
- printk("MUNICH_open: %s: unable to obtain irq %d\n", board->devname,
- board->pci->irq);
- /* TOD: free other resources (a sok malloc feljebb) */
- spin_unlock_irqrestore(&mister_lock, flags);
- return -EAGAIN;
- }
- board->irq = board->pci->irq; /* csak akkor legyen != 0, ha tenyleg le van foglalva nekunk */
-
- /* Programming device: */
-
- /* Reset the board like a power-on: */
- /* TOD:
- - It is not a real power-on: if a DMA transaction fails with master abort, the board
- stays in half-dead state.
- - It doesn't reset the FALC line driver */
-
- pci_write_config_dword(board->pci, MUNICH_PCI_PCIRES, 0xe0000);
- set_current_state(TASK_UNINTERRUPTIBLE);
- schedule_timeout(1);
- pci_write_config_dword(board->pci, MUNICH_PCI_PCIRES, 0);
- set_current_state(TASK_UNINTERRUPTIBLE);
- schedule_timeout(1);
-
- writel(virt_to_phys(&ccb->csa), MUNICH_VIRT(CCBA));
- writel(virt_to_phys( board->tiq ), MUNICH_VIRT(TIQBA));
- writel(MUNICH_INTQLEN, MUNICH_VIRT(TIQL));
- writel(virt_to_phys( board->riq ), MUNICH_VIRT(RIQBA));
- writel(MUNICH_INTQLEN, MUNICH_VIRT(RIQL));
- writel(virt_to_phys( board->piq ), MUNICH_VIRT(PIQBA));
- writel(MUNICH_PIQLEN, MUNICH_VIRT(PIQL));
-
- /* Put the magic values into the registers: */
-
- writel(MODE1_MAGIC, MUNICH_VIRT(MODE1));
- writel(MODE2_MAGIC, MUNICH_VIRT(MODE2));
-
- writel(LREG0_MAGIC, MUNICH_VIRT(LREG0));
- writel(LREG1_MAGIC, MUNICH_VIRT(LREG1));
- writel(LREG2_MAGIC, MUNICH_VIRT(LREG2));
- writel(LREG3_MAGIC, MUNICH_VIRT(LREG3));
- writel(LREG4_MAGIC, MUNICH_VIRT(LREG4));
- writel(LREG5_MAGIC, MUNICH_VIRT(LREG5));
-
- writel(LCONF_MAGIC1, MUNICH_VIRT(LCONF)); /* reset the DMSM */
- writel(LCONF_MAGIC2, MUNICH_VIRT(LCONF)); /* enable the DMSM */
-
- writel(~0, MUNICH_VIRT(TXPOLL));
- writel(board->isx21 ? 0x1400 : 0xa000, MUNICH_VIRT(GPDIR));
-
- if (readl(MUNICH_VIRT(STAT))) writel(readl(MUNICH_VIRT(STAT)), MUNICH_VIRT(STAT));
-
- ccb->action_spec = CCB_ACTIONSPEC_RES | CCB_ACTIONSPEC_IA;
- writel(CMD_ARPCM, MUNICH_VIRT(CMD)); /* Start the PCM core reset */
- set_current_state(TASK_UNINTERRUPTIBLE);
- schedule_timeout(1);
-
- stat = 0; /* Wait for the action to complete max. 1 second */
- jiffs = jiffies;
- while (!((stat = readl(MUNICH_VIRT(STAT))) & (STAT_PCMA | STAT_PCMF)) && time_before(jiffies, jiffs + HZ))
- {
- set_current_state(TASK_UNINTERRUPTIBLE);
- schedule_timeout(1);
- }
-
- if (stat & STAT_PCMF)
- {
- printk(KERN_ERR
- "MUNICH_open: %s: Initial ARPCM failed. STAT=0x%08x\n",
- board->devname, stat);
- writel(readl(MUNICH_VIRT(STAT)) & STAT_PCMF, MUNICH_VIRT(STAT));
- free_irq(board->irq, (void *)board); /* TOD: free other resources too *//* maybe shut down hw? */
- board->irq = 0;
- spin_unlock_irqrestore(&mister_lock, flags);
- return -EAGAIN;
- }
- else if (!(stat & STAT_PCMA))
- {
- printk(KERN_ERR
- "MUNICH_open: %s: Initial ARPCM timeout. STAT=0x%08x\n",
- board->devname, stat);
- free_irq(board->irq, (void *)board); /* TOD: free other resources too *//* maybe shut off the hw? */
- board->irq = 0;
- spin_unlock_irqrestore(&mister_lock, flags);
- return -EIO;
- }
-
- writel(readl(MUNICH_VIRT(STAT)) & STAT_PCMA, MUNICH_VIRT(STAT)); /* Acknowledge */
-
- if (board->isx21) writel(0, MUNICH_VIRT(GPDATA));
-
- printk("MUNICH_open: %s: succesful HW-open took %ld jiffies\n",
- board->devname, jiffies - jiffs);
-
- /* Set up the FALC hanging on the Local Bus: */
-
- if (!board->isx21)
- {
- writeb(0x0e, lbi + FMR1);
- writeb(0, lbi + LIM0);
- writeb(0xb0, lbi + LIM1); /* TODO: input threshold */
- writeb(0xf7, lbi + XPM0);
- writeb(0x02, lbi + XPM1);
- writeb(0x00, lbi + XPM2);
- writeb(0xf0, lbi + FMR0);
- writeb(0x80, lbi + PCD);
- writeb(0x80, lbi + PCR);
- writeb(0x00, lbi + LIM2);
- writeb(0x07, lbi + XC0);
- writeb(0x3d, lbi + XC1);
- writeb(0x05, lbi + RC0);
- writeb(0x00, lbi + RC1);
- writeb(0x83, lbi + FMR2);
- writeb(0x9f, lbi + XSW);
- writeb(0x0f, lbi + XSP);
- writeb(0x00, lbi + TSWM);
- writeb(0xe0, lbi + MODE);
- writeb(0xff, lbi + IDLE); /* Idle Code to send in unused timeslots */
- writeb(0x83, lbi + IPC); /* interrupt query line mode: Push/pull output, active high */
- writeb(0xbf, lbi + IMR3); /* send an interrupt every second */
-
- slicecom_set_framing(hw->boardnum, board->framing);
- slicecom_set_linecode(hw->boardnum, board->linecode);
- slicecom_set_clock_source(hw->boardnum, board->clock_source);
- slicecom_set_loopback(hw->boardnum, board->loopback);
-
- memset((void *)board->intervals, 0, sizeof(board->intervals));
- board->current_interval = 0;
- board->elapsed_seconds = 0;
- board->ses_seconds = 0;
- board->is_unavailable = 0;
- board->no_ses_seconds = 0;
- board->deg_elapsed_seconds = 0;
- board->deg_cumulated_errors = 0;
- }
-
- /* Enable the interrupts last */
- /* These interrupts will be enabled. We do not need the others. */
-
- writel(readl(MUNICH_VIRT(IMASK)) & ~(STAT_PTI | STAT_PRI | STAT_LBII | STAT_TSPA | STAT_RSPA), MUNICH_VIRT(IMASK));
- }
-
- spin_unlock_irqrestore(&mister_lock, flags);
-
- dev->irq = board->irq; /* hogy szep legyen az ifconfig outputja */
- ccb = board->ccb; /* TODO: ez igy csunya egy kicsit hogy benn is meg kinn is beletoltom :( */
-
- spin_lock_irqsave(&mister_lock, flags);
-
- set_current_state(TASK_UNINTERRUPTIBLE);
- schedule_timeout(1);
-
- /* Check if the selected timeslots aren't used already */
-
- for (i = 0; i < 32; i++)
- if (((1 << i) & timeslots) && !ccb->timeslot_spec[i].tti)
- {
- printk("MUNICH_open: %s: timeslot %d already used by %s\n",
- dev->name, i, board->twins[ccb->timeslot_spec[i].txchannel]->name);
- spin_unlock_irqrestore(&mister_lock, flags);
- return -EBUSY; /* TODO: lehet hogy valami mas errno kellene? */
- }
-
- /* find a free channel: */
- /* TODO: ugly, rewrite it */
-
- for (channel = 0; channel <= 32; channel++)
- {
- if (channel == 32)
- { /* not found a free one */
- printk
- ("MUNICH_open: %s: FATAL: can not find a free channel - this should not happen!\n",
- dev->name);
- spin_unlock_irqrestore(&mister_lock, flags);
- return -ENODEV;
- }
- if (board->twins[channel] == NULL)
- break; /* found the first free one */
- }
-
- board->lastcheck = jiffies; /* avoid checking uninitialized hardware channel */
-
- /* Open the channel. If fails, calls MUNICH_close() to properly free resources and stop the HW */
-
- hw->channel = channel;
- board->twins[channel] = dev;
-
- board->use_count++; /* meg nem nyitottuk meg a csatornat, de a twins-ben
- mar elfoglaltunk egyet, es ha a _close-t akarjuk hivni, akkor ez kell. */
- for (i = 0; i < 32; i++)
- if ((1 << i) & timeslots)
- {
- ccb->timeslot_spec[i].tti = 0;
- ccb->timeslot_spec[i].txchannel = channel;
- ccb->timeslot_spec[i].txfillmask = ~0;
-
- ccb->timeslot_spec[i].rti = 0;
- ccb->timeslot_spec[i].rxchannel = channel;
- ccb->timeslot_spec[i].rxfillmask = ~0;
- }
-
- if (!board->isx21) rework_idle_channels(dev);
-
- memset((void *)&(hw->tx_desc), 0, TX_DESC_MAX * sizeof(tx_desc_t));
- memset((void *)&(hw->rx_desc), 0, RX_DESC_MAX * sizeof(rx_desc_t));
-
- for (i = 0; i < TX_DESC_MAX; i++)
- {
- hw->tx_desc[i].fe = 1;
- hw->tx_desc[i].fnum = 2;
- hw->tx_desc[i].data = virt_to_phys( & (hw->tx_data[i][0]) );
- hw->tx_desc[i].next = virt_to_phys( & (hw->tx_desc[ (i+1) % TX_DESC_MAX ]) );
-
- }
- hw->tx_desc_ptr = 0; /* we will send an initial packet so it is correct: "oda irtunk utoljara" */
- hw->busy = 0;
- hw->tx_desc[hw->tx_desc_ptr].hold = 1;
- hw->tx_desc[hw->tx_desc_ptr].no = 1; /* TOD: inkabb csak 0 hosszut kuldjunk ki az initkor? */
-
- for (i = 0; i < RX_DESC_MAX; i++)
- {
- hw->rx_desc[i].no = RXBUFFER_SIZE;
- hw->rx_desc[i].data = virt_to_phys(&(hw->rx_data[i][0]));
- hw->rx_desc[i].next = virt_to_phys(&(hw->rx_desc[(i+1) % RX_DESC_MAX]));
- hw->rx_desc[i].status = 0xFF;
- }
- hw->rx_desc_ptr = 0;
-
- hw->rx_desc[(hw->rx_desc_ptr + RX_DESC_MAX - 2) % RX_DESC_MAX].hold = 1;
-
- memset((void *)&ccb->channel_spec[channel], 0, sizeof(channel_spec_t));
-
- ccb->channel_spec[channel].ti = 0; /* Transmit off */
- ccb->channel_spec[channel].to = 1;
- ccb->channel_spec[channel].ta = 0;
-
- ccb->channel_spec[channel].th = 1; /* Transmit hold */
-
- ccb->channel_spec[channel].ri = 0; /* Receive off */
- ccb->channel_spec[channel].ro = 1;
- ccb->channel_spec[channel].ra = 0;
-
- ccb->channel_spec[channel].mode = 3; /* HDLC */
-
- ccb->action_spec = CCB_ACTIONSPEC_IN | (channel << 8);
- writel(CMD_ARPCM, MUNICH_VIRT(CMD));
- set_current_state(TASK_UNINTERRUPTIBLE);
- schedule_timeout(1);
-
- spin_unlock_irqrestore(&mister_lock, flags);
-
- stat = 0;
- jiffs = jiffies;
- while (!((stat = readl(MUNICH_VIRT(STAT))) & (STAT_PCMA | STAT_PCMF)) && time_before(jiffies, jiffs + HZ))
- {
- set_current_state(TASK_UNINTERRUPTIBLE);
- schedule_timeout(1);
- }
-
- if (stat & STAT_PCMF)
- {
- printk(KERN_ERR "MUNICH_open: %s: %s channel %d off failed\n",
- dev->name, board->devname, channel);
- writel(readl(MUNICH_VIRT(STAT)) & STAT_PCMF, MUNICH_VIRT(STAT));
- MUNICH_close(dev);
- return -EAGAIN;
- }
- else if (!(stat & STAT_PCMA))
- {
- printk(KERN_ERR "MUNICH_open: %s: %s channel %d off timeout\n",
- dev->name, board->devname, channel);
- MUNICH_close(dev);
- return -EIO;
- }
-
- writel(readl(MUNICH_VIRT(STAT)) & STAT_PCMA, MUNICH_VIRT(STAT));
- // printk("MUNICH_open: %s: succesful channel off took %ld jiffies\n", board->devname, jiffies-jiffs);
-
- spin_lock_irqsave(&mister_lock, flags);
-
- set_current_state(TASK_UNINTERRUPTIBLE);
- schedule_timeout(1);
-
- ccb->channel_spec[channel].ifc = 1; /* 1 .. 'Idle/Flag change' interrupt letiltva */
- ccb->channel_spec[channel].fit = 1;
- ccb->channel_spec[channel].nitbs = 1;
- ccb->channel_spec[channel].itbs = 2;
-
- /* TODOO: lehet hogy jo lenne igy, de utana kellene nezni hogy nem okoz-e fragmentaciot */
- // ccb->channel_spec[channel].itbs = 2 * number_of_timeslots;
- // printk("open: %s: number_of_timeslots: %d\n", dev->name, number_of_timeslots);
-
- ccb->channel_spec[channel].mode = 3; /* HDLC */
- ccb->channel_spec[channel].ftda = virt_to_phys(&(hw->tx_desc));
- ccb->channel_spec[channel].frda = virt_to_phys(&(hw->rx_desc[0]));
-
- ccb->channel_spec[channel].ti = 1; /* Transmit init */
- ccb->channel_spec[channel].to = 0;
- ccb->channel_spec[channel].ta = 1;
-
- ccb->channel_spec[channel].th = 0;
-
- ccb->channel_spec[channel].ri = 1; /* Receive init */
- ccb->channel_spec[channel].ro = 0;
- ccb->channel_spec[channel].ra = 1;
-
- ccb->action_spec = CCB_ACTIONSPEC_ICO | (channel << 8);
- writel(CMD_ARPCM, MUNICH_VIRT(CMD)); /* Start the channel init */
- set_current_state(TASK_UNINTERRUPTIBLE);
- schedule_timeout(1);
-
- spin_unlock_irqrestore(&mister_lock, flags);
-
- stat = 0; /* Wait for the action to complete max. 1 second */
- jiffs = jiffies;
- while (!((stat = readl(MUNICH_VIRT(STAT))) & (STAT_PCMA | STAT_PCMF)) && time_before(jiffies, jiffs + HZ))
- {
- set_current_state(TASK_UNINTERRUPTIBLE);
- schedule_timeout(1);
- }
-
- if (stat & STAT_PCMF)
- {
- printk(KERN_ERR "MUNICH_open: %s: channel open ARPCM failed\n",
- board->devname);
- writel(readl(MUNICH_VIRT(STAT)) & STAT_PCMF, MUNICH_VIRT(STAT));
- MUNICH_close(dev);
- return -EAGAIN;
- }
- else if (!(stat & STAT_PCMA))
- {
- printk(KERN_ERR "MUNICH_open: %s: channel open ARPCM timeout\n",
- board->devname);
- MUNICH_close(dev);
- return -EIO;
- }
-
- writel(readl(MUNICH_VIRT(STAT)) & STAT_PCMA, MUNICH_VIRT(STAT));
- // printk("MUNICH_open: %s: succesful channel open took %ld jiffies\n", board->devname, jiffies-jiffs);
-
- spin_lock_irqsave(&mister_lock, flags);
-
- ccb->channel_spec[channel].nitbs = 0; /* once ITBS defined, these must be 0 */
- ccb->channel_spec[channel].itbs = 0;
-
- if (board->isx21)
- {
- init_timer(&board->modemline_timer);
- board->modemline_timer.data = (unsigned long)board;
- board->modemline_timer.function = pcicom_modemline;
- board->modemline_timer.expires = jiffies + HZ;
- add_timer((struct timer_list *)&board->modemline_timer);
- }
-
- /* It is done. Declare that we're open: */
- hw->busy = 0; /* It may be 1 if the frame at Tx init already ended, but it is not */
- /* a real problem: we compute hw->busy on every interrupt */
- hw->rafutott = 0;
- ch->init_status |= HW_OPEN;
-
- /* Initialize line state: */
- if (board->lineup)
- ch->line_status |= LINE_UP;
- else
- ch->line_status &= ~LINE_UP;
-
- /* Remove w attribute from /proc files associated to hw parameters:
- no write when the device is open */
-
- for (; procfile; procfile = procfile->next)
- if (strcmp(procfile->name, FILENAME_BOARDNUM) == 0 ||
- strcmp(procfile->name, FILENAME_TIMESLOTS) == 0)
- procfile->mode = S_IFREG | 0444;
-
- spin_unlock_irqrestore(&mister_lock, flags);
-
- return 0;
-}
-
-/*
- * Hardware close routine.
- * Called by comx (upper) layer when the user wants to bring down the interface
- * with ifconfig.
- * We also call it from MUNICH_open, if the open fails.
- * Brings down hardware, frees resources, stops receiver
- * Returns 0 on OK, or standard error value on error.
- */
-
-static int MUNICH_close(struct net_device *dev)
-{
- struct comx_channel *ch = netdev_priv(dev);
- struct slicecom_privdata *hw = ch->HW_privdata;
- struct proc_dir_entry *procfile = ch->procdir->subdir;
- munich_board_t *board;
- munich_ccb_t *ccb;
-
- u32 *bar1;
- u32 timeslots = hw->timeslots;
- int stat, i, channel = hw->channel;
- unsigned long jiffs;
-
- board = hw->boardnum + (ch->hardware == &pcicomhw ? pcicom_boards : slicecom_boards);
-
- ccb = board->ccb;
- bar1 = board->bar1;
-
- if (board->isx21)
- del_timer((struct timer_list *)&board->modemline_timer);
-
- spin_lock_irqsave(&mister_lock, flags);
-
- set_current_state(TASK_UNINTERRUPTIBLE);
- schedule_timeout(1);
-
- /* Disable receiver for the channel: */
-
- for (i = 0; i < 32; i++)
- if ((1 << i) & timeslots)
- {
- ccb->timeslot_spec[i].tti = 1;
- ccb->timeslot_spec[i].txfillmask = 0; /* just to be double-sure :) */
-
- ccb->timeslot_spec[i].rti = 1;
- ccb->timeslot_spec[i].rxfillmask = 0;
- }
-
- if (!board->isx21) rework_idle_channels(dev);
-
- ccb->channel_spec[channel].ti = 0; /* Receive off, Transmit off */
- ccb->channel_spec[channel].to = 1;
- ccb->channel_spec[channel].ta = 0;
- ccb->channel_spec[channel].th = 1;
-
- ccb->channel_spec[channel].ri = 0;
- ccb->channel_spec[channel].ro = 1;
- ccb->channel_spec[channel].ra = 0;
-
- board->twins[channel] = NULL;
-
- ccb->action_spec = CCB_ACTIONSPEC_IN | (channel << 8);
- writel(CMD_ARPCM, MUNICH_VIRT(CMD));
- set_current_state(TASK_UNINTERRUPTIBLE);
- schedule_timeout(1);
-
- spin_unlock_irqrestore(&mister_lock, flags);
-
- stat = 0;
- jiffs = jiffies;
- while (!((stat = readl(MUNICH_VIRT(STAT))) & (STAT_PCMA | STAT_PCMF)) && time_before(jiffies, jiffs + HZ))
- {
- set_current_state(TASK_UNINTERRUPTIBLE);
- schedule_timeout(1);
- }
-
- if (stat & STAT_PCMF)
- {
- printk(KERN_ERR
- "MUNICH_close: %s: FATAL: channel off ARPCM failed, not closing!\n",
- dev->name);
- writel(readl(MUNICH_VIRT(STAT)) & STAT_PCMF, MUNICH_VIRT(STAT));
- /* If we return success, the privdata (and the descriptor list) will be freed */
- return -EIO;
- }
- else if (!(stat & STAT_PCMA))
- printk(KERN_ERR "MUNICH_close: %s: channel off ARPCM timeout\n",
- board->devname);
-
- writel(readl(MUNICH_VIRT(STAT)) & STAT_PCMA, MUNICH_VIRT(STAT));
- // printk("MUNICH_close: %s: channel off took %ld jiffies\n", board->devname, jiffies-jiffs);
-
- spin_lock_irqsave(&mister_lock, flags);
-
- if (board->use_count) board->use_count--;
-
- if (!board->use_count) /* we were the last user of the board */
- {
- printk("MUNICH_close: bringing down board %s\n", board->devname);
-
- /* program down the board: */
-
- writel(0x0000FF7F, MUNICH_VIRT(IMASK)); /* do not send any interrupts */
- writel(0, MUNICH_VIRT(CMD)); /* stop the timer if someone started it */
- writel(~0U, MUNICH_VIRT(STAT)); /* if an interrupt came between the cli()-sti(), quiet it */
- if (ch->hardware == &pcicomhw)
- writel(0x1400, MUNICH_VIRT(GPDATA));
-
- /* Put the board into 'reset' state: */
- pci_write_config_dword(board->pci, MUNICH_PCI_PCIRES, 0xe0000);
-
- /* Free irq and other resources: */
- if (board->irq)
- free_irq(board->irq, (void *)board); /* Ha nem inicializalta magat, akkor meg nincs irq */
- board->irq = 0;
-
- /* Free CCB and the interrupt queues */
- if (board->ccb) kfree((void *)board->ccb);
- if (board->tiq) kfree((void *)board->tiq);
- if (board->riq) kfree((void *)board->riq);
- if (board->piq) kfree((void *)board->piq);
- board->ccb = NULL;
- board->tiq = board->riq = board->piq = NULL;
- }
-
- /* Enable setting of hw parameters */
- for (; procfile; procfile = procfile->next)
- if (strcmp(procfile->name, FILENAME_BOARDNUM) == 0 ||
- strcmp(procfile->name, FILENAME_TIMESLOTS) == 0)
- procfile->mode = S_IFREG | 0644;
-
- /* We're not open anymore */
- ch->init_status &= ~HW_OPEN;
-
- spin_unlock_irqrestore(&mister_lock, flags);
-
- return 0;
-}
-
-/*
- * Give (textual) status information.
- * The text it returns will be a part of what appears when the user does a
- * cat /proc/comx/comx[n]/status
- * Don't write more than PAGESIZE.
- * Return value: number of bytes written (length of the string, incl. 0)
- */
-
-static int MUNICH_minden(struct net_device *dev, char *page)
-{
- struct comx_channel *ch = netdev_priv(dev);
- struct slicecom_privdata *hw = ch->HW_privdata;
- munich_board_t *board;
- struct net_device *devp;
-
- u8 *lbi;
- e1_stats_t *curr_int, *prev_int;
- e1_stats_t last4, last96; /* sum of last 4, resp. last 96 intervals */
- unsigned *sump, /* running pointer for the sum data */
- *p; /* running pointer for the interval data */
-
- int len = 0;
- u8 frs0, frs1;
- u8 fmr2;
- int i, j;
- u32 timeslots;
-
- board = hw->boardnum + (ch->hardware == &pcicomhw ? pcicom_boards : slicecom_boards);
-
- lbi = board->lbi;
- curr_int = &board->intervals[board->current_interval];
- prev_int =
- &board->
- intervals[(board->current_interval + SLICECOM_BOARD_INTERVALS_SIZE -
- 1) % SLICECOM_BOARD_INTERVALS_SIZE];
-
- if (!board->isx21)
- {
- frs0 = readb(lbi + FRS0);
- fmr2 = readb(lbi + FMR2);
- len += scnprintf(page + len, PAGE_SIZE - len, "Controller status:\n");
- if (frs0 == 0)
- len += scnprintf(page + len, PAGE_SIZE - len, "\tNo alarms\n");
- else
- {
- if (frs0 & FRS0_LOS)
- len += scnprintf(page + len, PAGE_SIZE - len, "\tLoss Of Signal\n");
- else
- {
- if (frs0 & FRS0_AIS)
- len += scnprintf(page + len, PAGE_SIZE - len,
- "\tAlarm Indication Signal\n");
- else
- {
- if (frs0 & FRS0_AUXP)
- len += scnprintf(page + len, PAGE_SIZE - len,
- "\tAuxiliary Pattern Indication\n");
- if (frs0 & FRS0_LFA)
- len += scnprintf(page + len, PAGE_SIZE - len,
- "\tLoss of Frame Alignment\n");
- else
- {
- if (frs0 & FRS0_RRA)
- len += scnprintf(page + len, PAGE_SIZE - len,
- "\tReceive Remote Alarm\n");
-
- /* You can't set this framing with the /proc interface, but it */
- /* may be good to have here this alarm if you set it by hand: */
-
- if ((board->framing == SLICECOM_FRAMING_CRC4) &&
- (frs0 & FRS0_LMFA))
- len += scnprintf(page + len, PAGE_SIZE - len,
- "\tLoss of CRC4 Multiframe Alignment\n");
-
- if (((fmr2 & 0xc0) == 0xc0) && (frs0 & FRS0_NMF))
- len += scnprintf(page + len, PAGE_SIZE - len,
- "\tNo CRC4 Multiframe alignment Found after 400 msec\n");
- }
- }
- }
- }
-
- frs1 = readb(lbi + FRS1);
- if (FRS1_XLS & frs1)
- len += scnprintf(page + len, PAGE_SIZE - len,
- "\tTransmit Line Short\n");
-
- /* debug Rx ring: DEL: - vagy meghagyni, de akkor legyen kicsit altalanosabb */
- }
-
- len += scnprintf(page + len, PAGE_SIZE - len, "Rx ring:\n");
- len += scnprintf(page + len, PAGE_SIZE - len, "\trafutott: %d\n", hw->rafutott);
- len += scnprintf(page + len, PAGE_SIZE - len,
- "\tlastcheck: %ld, jiffies: %ld\n", board->lastcheck, jiffies);
- len += scnprintf(page + len, PAGE_SIZE - len, "\tbase: %08x\n",
- (u32) virt_to_phys(&hw->rx_desc[0]));
- len += scnprintf(page + len, PAGE_SIZE - len, "\trx_desc_ptr: %d\n",
- hw->rx_desc_ptr);
- len += scnprintf(page + len, PAGE_SIZE - len, "\trx_desc_ptr: %08x\n",
- (u32) virt_to_phys(&hw->rx_desc[hw->rx_desc_ptr]));
- len += scnprintf(page + len, PAGE_SIZE - len, "\thw_curr_ptr: %08x\n",
- board->ccb->current_rx_desc[hw->channel]);
-
- for (i = 0; i < RX_DESC_MAX; i++)
- len += scnprintf(page + len, PAGE_SIZE - len, "\t%08x %08x %08x %08x\n",
- *((u32 *) & hw->rx_desc[i] + 0),
- *((u32 *) & hw->rx_desc[i] + 1),
- *((u32 *) & hw->rx_desc[i] + 2),
- *((u32 *) & hw->rx_desc[i] + 3));
-
- if (!board->isx21)
- {
- len += scnprintf(page + len, PAGE_SIZE - len,
- "Interfaces using this board: (channel-group, interface, timeslots)\n");
- for (i = 0; i < 32; i++)
- {
- devp = board->twins[i];
- if (devp != NULL)
- {
- timeslots =
- ((struct slicecom_privdata *)((struct comx_channel *)devp->
- priv)->HW_privdata)->
- timeslots;
- len += scnprintf(page + len, PAGE_SIZE - len, "\t%2d %s: ", i,
- devp->name);
- for (j = 0; j < 32; j++)
- if ((1 << j) & timeslots)
- len += scnprintf(page + len, PAGE_SIZE - len, "%d ", j);
- len += scnprintf(page + len, PAGE_SIZE - len, "\n");
- }
- }
- }
-
- len += scnprintf(page + len, PAGE_SIZE - len, "Interrupt work histogram:\n");
- for (i = 0; i < MAX_WORK; i++)
- len += scnprintf(page + len, PAGE_SIZE - len, "hist[%2d]: %8u%c", i,
- board->histogram[i], (i &&
- ((i + 1) % 4 == 0 ||
- i == MAX_WORK - 1)) ? '\n' : ' ');
-
- len += scnprintf(page + len, PAGE_SIZE - len, "Tx ring histogram:\n");
- for (i = 0; i < TX_DESC_MAX; i++)
- len += scnprintf(page + len, PAGE_SIZE - len, "hist[%2d]: %8u%c", i,
- hw->tx_ring_hist[i], (i &&
- ((i + 1) % 4 == 0 ||
- i ==
- TX_DESC_MAX - 1)) ? '\n' : ' ');
-
- if (!board->isx21)
- {
-
- memset((void *)&last4, 0, sizeof(last4));
- memset((void *)&last96, 0, sizeof(last96));
-
- /* Calculate the sum of last 4 intervals: */
-
- for (i = 1; i <= 4; i++)
- {
- p = (unsigned *)&board->intervals[(board->current_interval +
- SLICECOM_BOARD_INTERVALS_SIZE -
- i) % SLICECOM_BOARD_INTERVALS_SIZE];
- sump = (unsigned *)&last4;
- for (j = 0; j < (sizeof(e1_stats_t) / sizeof(unsigned)); j++)
- sump[j] += p[j];
- }
-
- /* Calculate the sum of last 96 intervals: */
-
- for (i = 1; i <= 96; i++)
- {
- p = (unsigned *)&board->intervals[(board->current_interval +
- SLICECOM_BOARD_INTERVALS_SIZE -
- i) % SLICECOM_BOARD_INTERVALS_SIZE];
- sump = (unsigned *)&last96;
- for (j = 0; j < (sizeof(e1_stats_t) / sizeof(unsigned)); j++)
- sump[j] += p[j];
- }
-
- len += scnprintf(page + len, PAGE_SIZE - len,
- "Data in current interval (%d seconds elapsed):\n",
- board->elapsed_seconds);
- len += scnprintf(page + len, PAGE_SIZE - len,
- " %d Line Code Violations, %d Path Code Violations, %d E-Bit Errors\n",
- curr_int->line_code_violations,
- curr_int->path_code_violations, curr_int->e_bit_errors);
- len += scnprintf(page + len, PAGE_SIZE - len,
- " %d Slip Secs, %d Fr Loss Secs, %d Line Err Secs, %d Degraded Mins\n",
- curr_int->slip_secs, curr_int->fr_loss_secs,
- curr_int->line_err_secs, curr_int->degraded_mins);
- len += scnprintf(page + len, PAGE_SIZE - len,
- " %d Errored Secs, %d Bursty Err Secs, %d Severely Err Secs, %d Unavail Secs\n",
- curr_int->errored_secs, curr_int->bursty_err_secs,
- curr_int->severely_err_secs, curr_int->unavail_secs);
-
- len += scnprintf(page + len, PAGE_SIZE - len,
- "Data in Interval 1 (15 minutes):\n");
- len += scnprintf(page + len, PAGE_SIZE - len,
- " %d Line Code Violations, %d Path Code Violations, %d E-Bit Errors\n",
- prev_int->line_code_violations,
- prev_int->path_code_violations, prev_int->e_bit_errors);
- len += scnprintf(page + len, PAGE_SIZE - len,
- " %d Slip Secs, %d Fr Loss Secs, %d Line Err Secs, %d Degraded Mins\n",
- prev_int->slip_secs, prev_int->fr_loss_secs,
- prev_int->line_err_secs, prev_int->degraded_mins);
- len += scnprintf(page + len, PAGE_SIZE - len,
- " %d Errored Secs, %d Bursty Err Secs, %d Severely Err Secs, %d Unavail Secs\n",
- prev_int->errored_secs, prev_int->bursty_err_secs,
- prev_int->severely_err_secs, prev_int->unavail_secs);
-
- len += scnprintf(page + len, PAGE_SIZE - len,
- "Data in last 4 intervals (1 hour):\n");
- len += scnprintf(page + len, PAGE_SIZE - len,
- " %d Line Code Violations, %d Path Code Violations, %d E-Bit Errors\n",
- last4.line_code_violations, last4.path_code_violations,
- last4.e_bit_errors);
- len += scnprintf(page + len, PAGE_SIZE - len,
- " %d Slip Secs, %d Fr Loss Secs, %d Line Err Secs, %d Degraded Mins\n",
- last4.slip_secs, last4.fr_loss_secs, last4.line_err_secs,
- last4.degraded_mins);
- len += scnprintf(page + len, PAGE_SIZE - len,
- " %d Errored Secs, %d Bursty Err Secs, %d Severely Err Secs, %d Unavail Secs\n",
- last4.errored_secs, last4.bursty_err_secs,
- last4.severely_err_secs, last4.unavail_secs);
-
- len += scnprintf(page + len, PAGE_SIZE - len,
- "Data in last 96 intervals (24 hours):\n");
- len += scnprintf(page + len, PAGE_SIZE - len,
- " %d Line Code Violations, %d Path Code Violations, %d E-Bit Errors\n",
- last96.line_code_violations, last96.path_code_violations,
- last96.e_bit_errors);
- len += scnprintf(page + len, PAGE_SIZE - len,
- " %d Slip Secs, %d Fr Loss Secs, %d Line Err Secs, %d Degraded Mins\n",
- last96.slip_secs, last96.fr_loss_secs,
- last96.line_err_secs, last96.degraded_mins);
- len += scnprintf(page + len, PAGE_SIZE - len,
- " %d Errored Secs, %d Bursty Err Secs, %d Severely Err Secs, %d Unavail Secs\n",
- last96.errored_secs, last96.bursty_err_secs,
- last96.severely_err_secs, last96.unavail_secs);
-
- }
-
-// len +=scnprintf( page + len, PAGE_SIZE - len, "Special events:\n" );
-// len +=scnprintf( page + len, PAGE_SIZE - len, "\tstat_pri/missed: %u / %u\n", board->stat_pri_races, board->stat_pri_races_missed );
-// len +=scnprintf( page + len, PAGE_SIZE - len, "\tstat_pti/missed: %u / %u\n", board->stat_pti_races, board->stat_pti_races_missed );
- return len;
-}
-
-/*
- * Memory dump function. Not used currently.
- */
-static int BOARD_dump(struct net_device *dev)
-{
- printk
- ("BOARD_dump() requested. It is unimplemented, it should not be called\n");
- return (-1);
-}
-
-/*
- * /proc file read function for the files registered by this module.
- * This function is called by the procfs implementation when a user
- * wants to read from a file registered by this module.
- * page is the workspace, start should point to the real start of data,
- * off is the file offset, data points to the file's proc_dir_entry
- * structure.
- * Returns the number of bytes copied to the request buffer.
- */
-
-static int munich_read_proc(char *page, char **start, off_t off, int count,
- int *eof, void *data)
-{
- struct proc_dir_entry *file = (struct proc_dir_entry *)data;
- struct net_device *dev = file->parent->data;
- struct comx_channel *ch = netdev_priv(dev);
- struct slicecom_privdata *hw = ch->HW_privdata;
- munich_board_t *board;
-
- int len = 0, i;
- u32 timeslots = hw->timeslots;
-
- board = hw->boardnum + (ch->hardware == &pcicomhw ? pcicom_boards : slicecom_boards);
-
- if (!strcmp(file->name, FILENAME_BOARDNUM))
- len = sprintf(page, "%d\n", hw->boardnum);
- else if (!strcmp(file->name, FILENAME_TIMESLOTS))
- {
- for (i = 0; i < 32; i++)
- if ((1 << i) & timeslots)
- len += scnprintf(page + len, PAGE_SIZE - len, "%d ", i);
- len += scnprintf(page + len, PAGE_SIZE - len, "\n");
- }
- else if (!strcmp(file->name, FILENAME_FRAMING))
- {
- i = 0;
- while (slicecom_framings[i].value &&
- slicecom_framings[i].value != board->framing)
- i++;
- len += scnprintf(page + len, PAGE_SIZE - len, "%s\n",
- slicecom_framings[i].name);
- }
- else if (!strcmp(file->name, FILENAME_LINECODE))
- {
- i = 0;
- while (slicecom_linecodes[i].value &&
- slicecom_linecodes[i].value != board->linecode)
- i++;
- len += scnprintf(page + len, PAGE_SIZE - len, "%s\n",
- slicecom_linecodes[i].name);
- }
- else if (!strcmp(file->name, FILENAME_CLOCK_SOURCE))
- {
- i = 0;
- while (slicecom_clock_sources[i].value &&
- slicecom_clock_sources[i].value != board->clock_source)
- i++;
- len +=
- scnprintf(page + len, PAGE_SIZE - len, "%s\n",
- slicecom_clock_sources[i].name);
- }
- else if (!strcmp(file->name, FILENAME_LOOPBACK))
- {
- i = 0;
- while (slicecom_loopbacks[i].value &&
- slicecom_loopbacks[i].value != board->loopback)
- i++;
- len += scnprintf(page + len, PAGE_SIZE - len, "%s\n",
- slicecom_loopbacks[i].name);
- }
- /* We set permissions to write-only for REG and LBIREG, but root can read them anyway: */
- else if (!strcmp(file->name, FILENAME_REG))
- {
- len += scnprintf(page + len, PAGE_SIZE - len,
- "%s: " FILENAME_REG ": write-only file\n", dev->name);
- }
- else if (!strcmp(file->name, FILENAME_LBIREG))
- {
- len += scnprintf(page + len, PAGE_SIZE - len,
- "%s: " FILENAME_LBIREG ": write-only file\n", dev->name);
- }
- else
- {
- printk("slicecom_read_proc: internal error, filename %s\n", file->name);
- return -EBADF;
- }
- /* file handling administration: count eof status, offset, start address
- and count: */
-
- if (off >= len)
- {
- *eof = 1;
- return 0;
- }
-
- *start = page + off;
- if (count >= len - off)
- *eof = 1;
- return min((off_t) count, (off_t) len - off);
-}
-
-/*
- * Write function for /proc files registered by us.
- * See the comment on read function above.
- * Beware! buffer is in userspace!!!
- * Returns the number of bytes written
- */
-
-static int munich_write_proc(struct file *file, const char *buffer,
- u_long count, void *data)
-{
- struct proc_dir_entry *entry = (struct proc_dir_entry *)data;
- struct net_device *dev = (struct net_device *)entry->parent->data;
- struct comx_channel *ch = netdev_priv(dev);
- struct slicecom_privdata *hw = ch->HW_privdata;
- munich_board_t *board;
-
- unsigned long ts, tmp_boardnum;
-
- u32 tmp_timeslots = 0;
- char *page, *p;
- int i;
-
- board = hw->boardnum + (ch->hardware == &pcicomhw ? pcicom_boards : slicecom_boards);
-
- /* Paranoia checking: */
-
- if (PDE(file->f_dentry->d_inode) != entry)
- {
- printk(KERN_ERR "munich_write_proc: file <-> data internal error\n");
- return -EIO;
- }
-
- /* Request tmp buffer */
- if (!(page = (char *)__get_free_page(GFP_KERNEL)))
- return -ENOMEM;
-
- /* Copy user data and cut trailing \n */
- if (copy_from_user(page, buffer, count = min(count, PAGE_SIZE))) {
- free_page((unsigned long)page);
- return -EFAULT;
- }
- if (*(page + count - 1) == '\n')
- *(page + count - 1) = 0;
- *(page + PAGE_SIZE - 1) = 0;
-
- if (!strcmp(entry->name, FILENAME_BOARDNUM))
- {
- tmp_boardnum = simple_strtoul(page, NULL, 0);
- if (0 <= tmp_boardnum && tmp_boardnum < MAX_BOARDS)
- hw->boardnum = tmp_boardnum;
- else
- {
- printk("%s: " FILENAME_BOARDNUM " range is 0...%d\n", dev->name,
- MAX_BOARDS - 1);
- free_page((unsigned long)page);
- return -EINVAL;
- }
- }
- else if (!strcmp(entry->name, FILENAME_TIMESLOTS))
- {
- p = page;
- while (*p)
- {
- if (isspace(*p))
- p++;
- else
- {
- ts = simple_strtoul(p, &p, 10); /* base = 10: Don't read 09 as an octal number */
- /* ts = 0 ha nem tudta beolvasni a stringet, erre egy kicsit epitek itt: */
- if (0 <= ts && ts < 32)
- {
- tmp_timeslots |= (1 << ts);
- }
- else
- {
- printk("%s: " FILENAME_TIMESLOTS " range is 1...31\n",
- dev->name);
- free_page((unsigned long)page);
- return -EINVAL;
- }
- }
- }
- hw->timeslots = tmp_timeslots;
- }
- else if (!strcmp(entry->name, FILENAME_FRAMING))
- {
- i = 0;
- while (slicecom_framings[i].value &&
- strncmp(slicecom_framings[i].name, page,
- strlen(slicecom_framings[i].name)))
- i++;
- if (!slicecom_framings[i].value)
- {
- printk("slicecom: %s: Invalid " FILENAME_FRAMING " '%s'\n",
- dev->name, page);
- free_page((unsigned long)page);
- return -EINVAL;
- }
- else
- { /*
- * If somebody says:
- * echo >boardnum 0
- * echo >framing no-crc4
- * echo >boardnum 1
- * - when the framing was set, hw->boardnum was 0, so it would set the framing for board 0
- * Workaround: allow to set it only if interface is administrative UP
- */
- if (netif_running(dev))
- slicecom_set_framing(hw->boardnum, slicecom_framings[i].value);
- else
- {
- printk("%s: " FILENAME_FRAMING
- " can not be set while the interface is DOWN\n",
- dev->name);
- free_page((unsigned long)page);
- return -EINVAL;
- }
- }
- }
- else if (!strcmp(entry->name, FILENAME_LINECODE))
- {
- i = 0;
- while (slicecom_linecodes[i].value &&
- strncmp(slicecom_linecodes[i].name, page,
- strlen(slicecom_linecodes[i].name)))
- i++;
- if (!slicecom_linecodes[i].value)
- {
- printk("slicecom: %s: Invalid " FILENAME_LINECODE " '%s'\n",
- dev->name, page);
- free_page((unsigned long)page);
- return -EINVAL;
- }
- else
- { /*
- * Allow to set it only if interface is administrative UP,
- * for the same reason as FILENAME_FRAMING
- */
- if (netif_running(dev))
- slicecom_set_linecode(hw->boardnum,
- slicecom_linecodes[i].value);
- else
- {
- printk("%s: " FILENAME_LINECODE
- " can not be set while the interface is DOWN\n",
- dev->name);
- free_page((unsigned long)page);
- return -EINVAL;
- }
- }
- }
- else if (!strcmp(entry->name, FILENAME_CLOCK_SOURCE))
- {
- i = 0;
- while (slicecom_clock_sources[i].value &&
- strncmp(slicecom_clock_sources[i].name, page,
- strlen(slicecom_clock_sources[i].name)))
- i++;
- if (!slicecom_clock_sources[i].value)
- {
- printk("%s: Invalid " FILENAME_CLOCK_SOURCE " '%s'\n", dev->name,
- page);
- free_page((unsigned long)page);
- return -EINVAL;
- }
- else
- { /*
- * Allow to set it only if interface is administrative UP,
- * for the same reason as FILENAME_FRAMING
- */
- if (netif_running(dev))
- slicecom_set_clock_source(hw->boardnum,
- slicecom_clock_sources[i].value);
- else
- {
- printk("%s: " FILENAME_CLOCK_SOURCE
- " can not be set while the interface is DOWN\n",
- dev->name);
- free_page((unsigned long)page);
- return -EINVAL;
- }
- }
- }
- else if (!strcmp(entry->name, FILENAME_LOOPBACK))
- {
- i = 0;
- while (slicecom_loopbacks[i].value &&
- strncmp(slicecom_loopbacks[i].name, page,
- strlen(slicecom_loopbacks[i].name)))
- i++;
- if (!slicecom_loopbacks[i].value)
- {
- printk("%s: Invalid " FILENAME_LOOPBACK " '%s'\n", dev->name, page);
- free_page((unsigned long)page);
- return -EINVAL;
- }
- else
- { /*
- * Allow to set it only if interface is administrative UP,
- * for the same reason as FILENAME_FRAMING
- */
- if (netif_running(dev))
- slicecom_set_loopback(hw->boardnum,
- slicecom_loopbacks[i].value);
- else
- {
- printk("%s: " FILENAME_LOOPBACK
- " can not be set while the interface is DOWN\n",
- dev->name);
- free_page((unsigned long)page);
- return -EINVAL;
- }
- }
- }
- else if (!strcmp(entry->name, FILENAME_REG))
- { /* DEL: 'reg' csak tmp */
- char *p;
- u32 *bar1 = board->bar1;
-
- reg = simple_strtoul(page, &p, 0);
- reg_ertek = simple_strtoul(p + 1, NULL, 0);
-
- if (reg < 0x100)
- {
- printk("reg(0x%02x) := 0x%08x jiff: %lu\n", reg, reg_ertek, jiffies);
- writel(reg_ertek, MUNICH_VIRT(reg >> 2));
- }
- else
- {
- printk("reg(0x%02x) is 0x%08x jiff: %lu\n", reg - 0x100,
- readl(MUNICH_VIRT((reg - 0x100) >> 2)), jiffies);
- }
- }
- else if (!strcmp(entry->name, FILENAME_LBIREG))
- { /* DEL: 'lbireg' csak tmp */
- char *p;
- u8 *lbi = board->lbi;
-
- lbireg = simple_strtoul(page, &p, 0);
- lbireg_ertek = simple_strtoul(p + 1, NULL, 0);
-
- if (lbireg < 0x100)
- {
- printk("lbireg(0x%02x) := 0x%02x jiff: %lu\n", lbireg,
- lbireg_ertek, jiffies);
- writeb(lbireg_ertek, lbi + lbireg);
- }
- else
- printk("lbireg(0x%02x) is 0x%02x jiff: %lu\n", lbireg - 0x100,
- readb(lbi + lbireg - 0x100), jiffies);
- }
- else
- {
- printk(KERN_ERR "munich_write_proc: internal error, filename %s\n",
- entry->name);
- free_page((unsigned long)page);
- return -EBADF;
- }
-
- /* Don't forget to free the workspace */
- free_page((unsigned long)page);
- return count;
-}
-
-/*
- * Boardtype init function.
- * Called by the comx (upper) layer, when you set boardtype.
- * Allocates resources associated to using munich board for this device,
- * initializes ch_struct pointers etc.
- * Returns 0 on success and standard error codes on error.
- */
-
-static int init_escape(struct comx_channel *ch)
-{
- kfree(ch->HW_privdata);
- return -EIO;
-}
-
-static int BOARD_init(struct net_device *dev)
-{
- struct comx_channel *ch = netdev_priv(dev);
- struct slicecom_privdata *hw;
- struct proc_dir_entry *new_file;
-
- /* Alloc data for private structure */
- if ((ch->HW_privdata =
- kmalloc(sizeof(struct slicecom_privdata), GFP_KERNEL)) == NULL)
- return -ENOMEM;
-
- memset(hw = ch->HW_privdata, 0, sizeof(struct slicecom_privdata));
-
- /* Register /proc files */
- if ((new_file = create_proc_entry(FILENAME_BOARDNUM, S_IFREG | 0644,
- ch->procdir)) == NULL)
- return init_escape(ch);
- new_file->data = (void *)new_file;
- new_file->read_proc = &munich_read_proc;
- new_file->write_proc = &munich_write_proc;
-// new_file->proc_iops = &comx_normal_inode_ops;
- new_file->nlink = 1;
-
- if (ch->hardware == &slicecomhw)
- {
- if ((new_file = create_proc_entry(FILENAME_TIMESLOTS, S_IFREG | 0644,
- ch->procdir)) == NULL)
- return init_escape(ch);
- new_file->data = (void *)new_file;
- new_file->read_proc = &munich_read_proc;
- new_file->write_proc = &munich_write_proc;
-// new_file->proc_iops = &comx_normal_inode_ops;
- new_file->nlink = 1;
-
- if ((new_file = create_proc_entry(FILENAME_FRAMING, S_IFREG | 0644,
- ch->procdir)) == NULL)
- return init_escape(ch);
- new_file->data = (void *)new_file;
- new_file->read_proc = &munich_read_proc;
- new_file->write_proc = &munich_write_proc;
-// new_file->proc_iops = &comx_normal_inode_ops;
- new_file->nlink = 1;
-
- if ((new_file = create_proc_entry(FILENAME_LINECODE, S_IFREG | 0644,
- ch->procdir)) == NULL)
- return init_escape(ch);
- new_file->data = (void *)new_file;
- new_file->read_proc = &munich_read_proc;
- new_file->write_proc = &munich_write_proc;
-// new_file->proc_iops = &comx_normal_inode_ops;
- new_file->nlink = 1;
-
- if ((new_file = create_proc_entry(FILENAME_CLOCK_SOURCE, S_IFREG | 0644,
- ch->procdir)) == NULL)
- return init_escape(ch);
- new_file->data = (void *)new_file;
- new_file->read_proc = &munich_read_proc;
- new_file->write_proc = &munich_write_proc;
-// new_file->proc_iops = &comx_normal_inode_ops;
- new_file->nlink = 1;
-
- if ((new_file = create_proc_entry(FILENAME_LOOPBACK, S_IFREG | 0644,
- ch->procdir)) == NULL)
- return init_escape(ch);
- new_file->data = (void *)new_file;
- new_file->read_proc = &munich_read_proc;
- new_file->write_proc = &munich_write_proc;
-// new_file->proc_iops = &comx_normal_inode_ops;
- new_file->nlink = 1;
- }
-
- /* DEL: ez itt csak fejlesztesi celokra!! */
- if ((new_file = create_proc_entry(FILENAME_REG, S_IFREG | 0200, ch->procdir)) == NULL)
- return init_escape(ch);
- new_file->data = (void *)new_file;
- new_file->read_proc = &munich_read_proc;
- new_file->write_proc = &munich_write_proc;
-// new_file->proc_iops = &comx_normal_inode_ops;
- new_file->nlink = 1;
-
- /* DEL: ez itt csak fejlesztesi celokra!! */
- if ((new_file = create_proc_entry(FILENAME_LBIREG, S_IFREG | 0200,
- ch->procdir)) == NULL)
- return init_escape(ch);
- new_file->data = (void *)new_file;
- new_file->read_proc = &munich_read_proc;
- new_file->write_proc = &munich_write_proc;
-// new_file->proc_iops = &comx_normal_inode_ops;
- new_file->nlink = 1;
-
- /* Fill in ch_struct hw specific pointers: */
-
- ch->HW_txe = MUNICH_txe;
- ch->HW_open = MUNICH_open;
- ch->HW_close = MUNICH_close;
- ch->HW_send_packet = MUNICH_send_packet;
-#ifndef COMX_NEW
- ch->HW_minden = MUNICH_minden;
-#else
- ch->HW_statistics = MUNICH_minden;
-#endif
-
- hw->boardnum = SLICECOM_BOARDNUM_DEFAULT;
- hw->timeslots = ch->hardware == &pcicomhw ? 0xffffffff : 2;
-
- /* O.K. Count one more user on this module */
- MOD_INC_USE_COUNT;
- return 0;
-}
-
-/*
- * Boardtype exit function.
- * Called by the comx (upper) layer, when you clear boardtype from munich.
- * Frees resources associated to using munich board for this device,
- * resets ch_struct pointers etc.
- */
-static int BOARD_exit(struct net_device *dev)
-{
- struct comx_channel *ch = netdev_priv(dev);
-
- /* Free private data area */
-// board = hw->boardnum + (ch->hardware == &pcicomhw ? pcicom_boards : slicecom_boards);
-
- kfree(ch->HW_privdata);
- /* Remove /proc files */
- remove_proc_entry(FILENAME_BOARDNUM, ch->procdir);
- if (ch->hardware == &slicecomhw)
- {
- remove_proc_entry(FILENAME_TIMESLOTS, ch->procdir);
- remove_proc_entry(FILENAME_FRAMING, ch->procdir);
- remove_proc_entry(FILENAME_LINECODE, ch->procdir);
- remove_proc_entry(FILENAME_CLOCK_SOURCE, ch->procdir);
- remove_proc_entry(FILENAME_LOOPBACK, ch->procdir);
- }
- remove_proc_entry(FILENAME_REG, ch->procdir);
- remove_proc_entry(FILENAME_LBIREG, ch->procdir);
-
- /* Minus one user for the module accounting */
- MOD_DEC_USE_COUNT;
- return 0;
-}
-
-static struct comx_hardware slicecomhw =
-{
- "slicecom",
-#ifdef COMX_NEW
- VERSION,
-#endif
- BOARD_init,
- BOARD_exit,
- BOARD_dump,
- NULL
-};
-
-static struct comx_hardware pcicomhw =
-{
- "pcicom",
-#ifdef COMX_NEW
- VERSION,
-#endif
- BOARD_init,
- BOARD_exit,
- BOARD_dump,
- NULL
-};
-
-/* Module management */
-
-static int __init init_mister(void)
-{
- printk(VERSIONSTR);
- comx_register_hardware(&slicecomhw);
- comx_register_hardware(&pcicomhw);
- return munich_probe();
-}
-
-static void __exit cleanup_mister(void)
-{
- int i;
-
- comx_unregister_hardware("slicecom");
- comx_unregister_hardware("pcicom");
-
- for (i = 0; i < MAX_BOARDS; i++)
- {
- if (slicecom_boards[i].bar1)
- iounmap((void *)slicecom_boards[i].bar1);
- if (slicecom_boards[i].lbi)
- iounmap((void *)slicecom_boards[i].lbi);
- if (pcicom_boards[i].bar1)
- iounmap((void *)pcicom_boards[i].bar1);
- if (pcicom_boards[i].lbi)
- iounmap((void *)pcicom_boards[i].lbi);
- }
-}
-
-module_init(init_mister);
-module_exit(cleanup_mister);
+++ /dev/null
-/*
- * Frame-relay protocol module for the COMX driver
- * for Linux 2.2.X
- *
- * Original author: Tivadar Szemethy <tiv@itc.hu>
- * Maintainer: Gergely Madarasz <gorgo@itc.hu>
- *
- * Copyright (C) 1998-1999 ITConsult-Pro Co. <info@itc.hu>
- *
- * Contributors:
- * Arnaldo Carvalho de Melo <acme@conectiva.com.br> (0.73)
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- *
- * Version 0.70 (99/06/14):
- * - cleaned up the source code a bit
- * - ported back to kernel, now works as builtin code
- *
- * Version 0.71 (99/06/25):
- * - use skb priorities and queues for sending keepalive
- * - use device queues for slave->master data transmit
- * - set IFF_RUNNING only line protocol up
- * - fixes on slave device flags
- *
- * Version 0.72 (99/07/09):
- * - handle slave tbusy with master tbusy (should be fixed)
- * - fix the keepalive timer addition/deletion
- *
- * Version 0.73 (00/08/15)
- * - resource release on failure at fr_master_init and
- * fr_slave_init
- */
-
-#define VERSION "0.73"
-
-#include <linux/module.h>
-#include <linux/types.h>
-#include <linux/jiffies.h>
-#include <linux/netdevice.h>
-#include <linux/proc_fs.h>
-#include <linux/if_arp.h>
-#include <linux/inetdevice.h>
-#include <linux/pkt_sched.h>
-#include <linux/init.h>
-
-#include <asm/uaccess.h>
-
-#include "comx.h"
-#include "comxhw.h"
-
-MODULE_AUTHOR("Author: Tivadar Szemethy <tiv@itc.hu>");
-MODULE_DESCRIPTION("Frame Relay protocol implementation for the COMX drivers"
- "for Linux kernel 2.4.X");
-MODULE_LICENSE("GPL");
-
-#define FRAD_UI 0x03
-#define NLPID_IP 0xcc
-#define NLPID_Q933_LMI 0x08
-#define NLPID_CISCO_LMI 0x09
-#define Q933_ENQ 0x75
-#define Q933_LINESTAT 0x51
-#define Q933_COUNTERS 0x53
-
-#define MAXALIVECNT 3 /* No. of failures */
-
-struct fr_data {
- u16 dlci;
- struct net_device *master;
- char keepa_pend;
- char keepa_freq;
- char keepalivecnt, keeploopcnt;
- struct timer_list keepa_timer;
- u8 local_cnt, remote_cnt;
-};
-
-static struct comx_protocol fr_master_protocol;
-static struct comx_protocol fr_slave_protocol;
-static struct comx_hardware fr_dlci;
-
-static void fr_keepalive_send(struct net_device *dev)
-{
- struct comx_channel *ch = dev->priv;
- struct fr_data *fr = ch->LINE_privdata;
- struct sk_buff *skb;
- u8 *fr_packet;
-
- skb=alloc_skb(dev->hard_header_len + 13, GFP_ATOMIC);
-
- if(skb==NULL)
- return;
-
- skb_reserve(skb, dev->hard_header_len);
-
- fr_packet=(u8*)skb_put(skb, 13);
-
- fr_packet[0] = (fr->dlci & (1024 - 15)) >> 2;
- fr_packet[1] = (fr->dlci & 15) << 4 | 1; // EA bit 1
- fr_packet[2] = FRAD_UI;
- fr_packet[3] = NLPID_Q933_LMI;
- fr_packet[4] = 0;
- fr_packet[5] = Q933_ENQ;
- fr_packet[6] = Q933_LINESTAT;
- fr_packet[7] = 0x01;
- fr_packet[8] = 0x01;
- fr_packet[9] = Q933_COUNTERS;
- fr_packet[10] = 0x02;
- fr_packet[11] = ++fr->local_cnt;
- fr_packet[12] = fr->remote_cnt;
-
- skb->dev = dev;
- skb->priority = TC_PRIO_CONTROL;
- dev_queue_xmit(skb);
-}
-
-static void fr_keepalive_timerfun(unsigned long d)
-{
- struct net_device *dev = (struct net_device *)d;
- struct comx_channel *ch = dev->priv;
- struct fr_data *fr = ch->LINE_privdata;
- struct proc_dir_entry *dir = ch->procdir->parent->subdir;
- struct comx_channel *sch;
- struct fr_data *sfr;
- struct net_device *sdev;
-
- if (ch->init_status & LINE_OPEN) {
- if (fr->keepalivecnt == MAXALIVECNT) {
- comx_status(dev, ch->line_status & ~PROTO_UP);
- dev->flags &= ~IFF_RUNNING;
- for (; dir ; dir = dir->next) {
- if(!S_ISDIR(dir->mode)) {
- continue;
- }
-
- if ((sdev = dir->data) && (sch = sdev->priv) &&
- (sdev->type == ARPHRD_DLCI) &&
- (sfr = sch->LINE_privdata)
- && (sfr->master == dev) &&
- (sdev->flags & IFF_UP)) {
- sdev->flags &= ~IFF_RUNNING;
- comx_status(sdev,
- sch->line_status & ~PROTO_UP);
- }
- }
- }
- if (fr->keepalivecnt <= MAXALIVECNT) {
- ++fr->keepalivecnt;
- }
- fr_keepalive_send(dev);
- }
- mod_timer(&fr->keepa_timer, jiffies + HZ * fr->keepa_freq);
-}
-
-static void fr_rx_lmi(struct net_device *dev, struct sk_buff *skb,
- u16 dlci, u8 nlpid)
-{
- struct comx_channel *ch = dev->priv;
- struct fr_data *fr = ch->LINE_privdata;
- struct proc_dir_entry *dir = ch->procdir->parent->subdir;
- struct comx_channel *sch;
- struct fr_data *sfr;
- struct net_device *sdev;
-
- if (dlci != fr->dlci || nlpid != NLPID_Q933_LMI || !fr->keepa_freq) {
- return;
- }
-
- fr->remote_cnt = skb->data[7];
- if (skb->data[8] == fr->local_cnt) { // keepalive UP!
- fr->keepalivecnt = 0;
- if ((ch->line_status & LINE_UP) &&
- !(ch->line_status & PROTO_UP)) {
- comx_status(dev, ch->line_status |= PROTO_UP);
- dev->flags |= IFF_RUNNING;
- for (; dir ; dir = dir->next) {
- if(!S_ISDIR(dir->mode)) {
- continue;
- }
-
- if ((sdev = dir->data) && (sch = sdev->priv) &&
- (sdev->type == ARPHRD_DLCI) &&
- (sfr = sch->LINE_privdata)
- && (sfr->master == dev) &&
- (sdev->flags & IFF_UP)) {
- sdev->flags |= IFF_RUNNING;
- comx_status(sdev,
- sch->line_status | PROTO_UP);
- }
- }
- }
- }
-}
-
-static void fr_set_keepalive(struct net_device *dev, int keepa)
-{
- struct comx_channel *ch = dev->priv;
- struct fr_data *fr = ch->LINE_privdata;
-
- if (!keepa && fr->keepa_freq) { // switch off
- fr->keepa_freq = 0;
- if (ch->line_status & LINE_UP) {
- comx_status(dev, ch->line_status | PROTO_UP);
- dev->flags |= IFF_RUNNING;
- del_timer(&fr->keepa_timer);
- }
- return;
- }
-
- if (keepa) { // bekapcs
- if(fr->keepa_freq && (ch->line_status & LINE_UP)) {
- del_timer(&fr->keepa_timer);
- }
- fr->keepa_freq = keepa;
- fr->local_cnt = fr->remote_cnt = 0;
- init_timer(&fr->keepa_timer);
- fr->keepa_timer.expires = jiffies + HZ;
- fr->keepa_timer.function = fr_keepalive_timerfun;
- fr->keepa_timer.data = (unsigned long)dev;
- ch->line_status &= ~(PROTO_UP | PROTO_LOOP);
- dev->flags &= ~IFF_RUNNING;
- comx_status(dev, ch->line_status);
- if(ch->line_status & LINE_UP) {
- add_timer(&fr->keepa_timer);
- }
- }
-}
-
-static void fr_rx(struct net_device *dev, struct sk_buff *skb)
-{
- struct comx_channel *ch = dev->priv;
- struct proc_dir_entry *dir = ch->procdir->parent->subdir;
- struct net_device *sdev = dev;
- struct comx_channel *sch;
- struct fr_data *sfr;
- u16 dlci;
- u8 nlpid;
-
- if(skb->len <= 4 || skb->data[2] != FRAD_UI) {
- kfree_skb(skb);
- return;
- }
-
- /* Itt majd ki kell talalni, melyik slave kapja a csomagot */
- dlci = ((skb->data[0] & 0xfc) << 2) | ((skb->data[1] & 0xf0) >> 4);
- if ((nlpid = skb->data[3]) == 0) { // Optional padding
- nlpid = skb->data[4];
- skb_pull(skb, 1);
- }
- skb_pull(skb, 4); /* DLCI and header throw away */
-
- if (ch->debug_flags & DEBUG_COMX_DLCI) {
- comx_debug(dev, "Frame received, DLCI: %d, NLPID: 0x%02x\n",
- dlci, nlpid);
- comx_debug_skb(dev, skb, "Contents");
- }
-
- /* Megkeressuk, kihez tartozik */
- for (; dir ; dir = dir->next) {
- if(!S_ISDIR(dir->mode)) {
- continue;
- }
- if ((sdev = dir->data) && (sch = sdev->priv) &&
- (sdev->type == ARPHRD_DLCI) && (sfr = sch->LINE_privdata) &&
- (sfr->master == dev) && (sfr->dlci == dlci)) {
- skb->dev = sdev;
- if (ch->debug_flags & DEBUG_COMX_DLCI) {
- comx_debug(dev, "Passing it to %s\n",sdev->name);
- }
- if (dev != sdev) {
- sch->stats.rx_packets++;
- sch->stats.rx_bytes += skb->len;
- }
- break;
- }
- }
- switch(nlpid) {
- case NLPID_IP:
- skb->protocol = htons(ETH_P_IP);
- skb->mac.raw = skb->data;
- comx_rx(sdev, skb);
- break;
- case NLPID_Q933_LMI:
- fr_rx_lmi(dev, skb, dlci, nlpid);
- default:
- kfree_skb(skb);
- break;
- }
-}
-
-static int fr_tx(struct net_device *dev)
-{
- struct comx_channel *ch = dev->priv;
- struct proc_dir_entry *dir = ch->procdir->parent->subdir;
- struct net_device *sdev;
- struct comx_channel *sch;
- struct fr_data *sfr;
- int cnt = 1;
-
- /* Ha minden igaz, 2 helyen fog allni a tbusy: a masternel,
- es annal a slave-nel aki eppen kuldott.
- Egy helyen akkor all, ha a master kuldott.
- Ez megint jo lesz majd, ha utemezni akarunk */
-
- /* This should be fixed, the slave tbusy should be set when
- the masters queue is full and reset when not */
-
- for (; dir ; dir = dir->next) {
- if(!S_ISDIR(dir->mode)) {
- continue;
- }
- if ((sdev = dir->data) && (sch = sdev->priv) &&
- (sdev->type == ARPHRD_DLCI) && (sfr = sch->LINE_privdata) &&
- (sfr->master == dev) && (netif_queue_stopped(sdev))) {
- netif_wake_queue(sdev);
- cnt++;
- }
- }
-
- netif_wake_queue(dev);
- return 0;
-}
-
-static void fr_status(struct net_device *dev, unsigned short status)
-{
- struct comx_channel *ch = dev->priv;
- struct fr_data *fr = ch->LINE_privdata;
- struct proc_dir_entry *dir = ch->procdir->parent->subdir;
- struct net_device *sdev;
- struct comx_channel *sch;
- struct fr_data *sfr;
-
- if (status & LINE_UP) {
- if (!fr->keepa_freq) {
- status |= PROTO_UP;
- }
- } else {
- status &= ~(PROTO_UP | PROTO_LOOP);
- }
-
- if (dev == fr->master && fr->keepa_freq) {
- if (status & LINE_UP) {
- fr->keepa_timer.expires = jiffies + HZ;
- add_timer(&fr->keepa_timer);
- fr->keepalivecnt = MAXALIVECNT + 1;
- fr->keeploopcnt = 0;
- } else {
- del_timer(&fr->keepa_timer);
- }
- }
-
- /* Itt a status valtozast vegig kell vinni az osszes slave-n */
- for (; dir ; dir = dir->next) {
- if(!S_ISDIR(dir->mode)) {
- continue;
- }
-
- if ((sdev = dir->data) && (sch = sdev->priv) &&
- (sdev->type == ARPHRD_FRAD || sdev->type == ARPHRD_DLCI) &&
- (sfr = sch->LINE_privdata) && (sfr->master == dev)) {
- if(status & LINE_UP) {
- netif_wake_queue(sdev);
- }
- comx_status(sdev, status);
- if(status & (PROTO_UP | PROTO_LOOP)) {
- dev->flags |= IFF_RUNNING;
- } else {
- dev->flags &= ~IFF_RUNNING;
- }
- }
- }
-}
-
-static int fr_open(struct net_device *dev)
-{
- struct comx_channel *ch = dev->priv;
- struct fr_data *fr = ch->LINE_privdata;
- struct proc_dir_entry *comxdir = ch->procdir;
- struct comx_channel *mch;
-
- if (!(ch->init_status & HW_OPEN)) {
- return -ENODEV;
- }
-
- if ((ch->hardware == &fr_dlci && ch->protocol != &fr_slave_protocol) ||
- (ch->protocol == &fr_slave_protocol && ch->hardware != &fr_dlci)) {
- printk(KERN_ERR "Trying to open an improperly set FR interface, giving up\n");
- return -EINVAL;
- }
-
- if (!fr->master) {
- return -ENODEV;
- }
- mch = fr->master->priv;
- if (fr->master != dev && (!(mch->init_status & LINE_OPEN)
- || (mch->protocol != &fr_master_protocol))) {
- printk(KERN_ERR "Master %s is inactive, or incorrectly set up, "
- "unable to open %s\n", fr->master->name, dev->name);
- return -ENODEV;
- }
-
- ch->init_status |= LINE_OPEN;
- ch->line_status &= ~(PROTO_UP | PROTO_LOOP);
- dev->flags &= ~IFF_RUNNING;
-
- if (fr->master == dev) {
- if (fr->keepa_freq) {
- fr->keepa_timer.function = fr_keepalive_timerfun;
- fr->keepa_timer.data = (unsigned long)dev;
- add_timer(&fr->keepa_timer);
- } else {
- if (ch->line_status & LINE_UP) {
- ch->line_status |= PROTO_UP;
- dev->flags |= IFF_RUNNING;
- }
- }
- } else {
- ch->line_status = mch->line_status;
- if(fr->master->flags & IFF_RUNNING) {
- dev->flags |= IFF_RUNNING;
- }
- }
-
- for (; comxdir ; comxdir = comxdir->next) {
- if (strcmp(comxdir->name, FILENAME_DLCI) == 0 ||
- strcmp(comxdir->name, FILENAME_MASTER) == 0 ||
- strcmp(comxdir->name, FILENAME_KEEPALIVE) == 0) {
- comxdir->mode = S_IFREG | 0444;
- }
- }
-// comx_status(dev, ch->line_status);
- return 0;
-}
-
-static int fr_close(struct net_device *dev)
-{
- struct comx_channel *ch = dev->priv;
- struct fr_data *fr = ch->LINE_privdata;
- struct proc_dir_entry *comxdir = ch->procdir;
-
- if (fr->master == dev) { // Ha master
- struct proc_dir_entry *dir = ch->procdir->parent->subdir;
- struct net_device *sdev = dev;
- struct comx_channel *sch;
- struct fr_data *sfr;
-
- if (!(ch->init_status & HW_OPEN)) {
- return -ENODEV;
- }
-
- if (fr->keepa_freq) {
- del_timer(&fr->keepa_timer);
- }
-
- for (; dir ; dir = dir->next) {
- if(!S_ISDIR(dir->mode)) {
- continue;
- }
- if ((sdev = dir->data) && (sch = sdev->priv) &&
- (sdev->type == ARPHRD_DLCI) &&
- (sfr = sch->LINE_privdata) &&
- (sfr->master == dev) &&
- (sch->init_status & LINE_OPEN)) {
- dev_close(sdev);
- }
- }
- }
-
- ch->init_status &= ~LINE_OPEN;
- ch->line_status &= ~(PROTO_UP | PROTO_LOOP);
- dev->flags &= ~IFF_RUNNING;
-
- for (; comxdir ; comxdir = comxdir->next) {
- if (strcmp(comxdir->name, FILENAME_DLCI) == 0 ||
- strcmp(comxdir->name, FILENAME_MASTER) == 0 ||
- strcmp(comxdir->name, FILENAME_KEEPALIVE) == 0) {
- comxdir->mode = S_IFREG | 0444;
- }
- }
-
- return 0;
-}
-
-static int fr_xmit(struct sk_buff *skb, struct net_device *dev)
-{
- struct comx_channel *ch = dev->priv;
- struct comx_channel *sch, *mch;
- struct fr_data *fr = ch->LINE_privdata;
- struct fr_data *sfr;
- struct net_device *sdev;
- struct proc_dir_entry *dir = ch->procdir->parent->subdir;
-
- if (!fr->master) {
- printk(KERN_ERR "BUG: fr_xmit without a master!!! dev: %s\n", dev->name);
- return 0;
- }
-
- mch = fr->master->priv;
-
- /* Ennek majd a slave utemezeskor lesz igazan jelentosege */
- if (ch->debug_flags & DEBUG_COMX_DLCI) {
- comx_debug_skb(dev, skb, "Sending frame");
- }
-
- if (dev != fr->master) {
- struct sk_buff *newskb=skb_clone(skb, GFP_ATOMIC);
- if (!newskb)
- return -ENOMEM;
- newskb->dev=fr->master;
- dev_queue_xmit(newskb);
- ch->stats.tx_bytes += skb->len;
- ch->stats.tx_packets++;
- dev_kfree_skb(skb);
- } else {
- netif_stop_queue(dev);
- for (; dir ; dir = dir->next) {
- if(!S_ISDIR(dir->mode)) {
- continue;
- }
- if ((sdev = dir->data) && (sch = sdev->priv) &&
- (sdev->type == ARPHRD_DLCI) && (sfr = sch->LINE_privdata) &&
- (sfr->master == dev) && (netif_queue_stopped(sdev))) {
- netif_stop_queue(sdev);
- }
- }
-
- switch(mch->HW_send_packet(dev, skb)) {
- case FRAME_QUEUED:
- netif_wake_queue(dev);
- break;
- case FRAME_ACCEPTED:
- case FRAME_DROPPED:
- break;
- case FRAME_ERROR:
- printk(KERN_ERR "%s: Transmit frame error (len %d)\n",
- dev->name, skb->len);
- break;
- }
- }
- return 0;
-}
-
-static int fr_header(struct sk_buff *skb, struct net_device *dev,
- unsigned short type, void *daddr, void *saddr, unsigned len)
-{
- struct comx_channel *ch = dev->priv;
- struct fr_data *fr = ch->LINE_privdata;
-
- skb_push(skb, dev->hard_header_len);
- /* Put in DLCI */
- skb->data[0] = (fr->dlci & (1024 - 15)) >> 2;
- skb->data[1] = (fr->dlci & 15) << 4 | 1; // EA bit 1
- skb->data[2] = FRAD_UI;
- skb->data[3] = NLPID_IP;
-
- return dev->hard_header_len;
-}
-
-static int fr_statistics(struct net_device *dev, char *page)
-{
- struct comx_channel *ch = dev->priv;
- struct fr_data *fr = ch->LINE_privdata;
- int len = 0;
-
- if (fr->master == dev) {
- struct proc_dir_entry *dir = ch->procdir->parent->subdir;
- struct net_device *sdev;
- struct comx_channel *sch;
- struct fr_data *sfr;
- int slaves = 0;
-
- len += sprintf(page + len,
- "This is a Frame Relay master device\nSlaves: ");
- for (; dir ; dir = dir->next) {
- if(!S_ISDIR(dir->mode)) {
- continue;
- }
- if ((sdev = dir->data) && (sch = sdev->priv) &&
- (sdev->type == ARPHRD_DLCI) &&
- (sfr = sch->LINE_privdata) &&
- (sfr->master == dev) && (sdev != dev)) {
- slaves++;
- len += sprintf(page + len, "%s ", sdev->name);
- }
- }
- len += sprintf(page + len, "%s\n", slaves ? "" : "(none)");
- if (fr->keepa_freq) {
- len += sprintf(page + len, "Line keepalive (value %d) "
- "status %s [%d]\n", fr->keepa_freq,
- ch->line_status & PROTO_LOOP ? "LOOP" :
- ch->line_status & PROTO_UP ? "UP" : "DOWN",
- fr->keepalivecnt);
- } else {
- len += sprintf(page + len, "Line keepalive protocol "
- "is not set\n");
- }
- } else { // if slave
- len += sprintf(page + len,
- "This is a Frame Relay slave device, master: %s\n",
- fr->master ? fr->master->name : "(not set)");
- }
- return len;
-}
-
-static int fr_read_proc(char *page, char **start, off_t off, int count,
- int *eof, void *data)
-{
- struct proc_dir_entry *file = (struct proc_dir_entry *)data;
- struct net_device *dev = file->parent->data;
- struct comx_channel *ch = dev->priv;
- struct fr_data *fr = NULL;
- int len = 0;
-
- if (ch) {
- fr = ch->LINE_privdata;
- }
-
- if (strcmp(file->name, FILENAME_DLCI) == 0) {
- len = sprintf(page, "%04d\n", fr->dlci);
- } else if (strcmp(file->name, FILENAME_MASTER) == 0) {
- len = sprintf(page, "%-9s\n", fr->master ? fr->master->name :
- "(none)");
- } else if (strcmp(file->name, FILENAME_KEEPALIVE) == 0) {
- len = fr->keepa_freq ? sprintf(page, "% 3d\n", fr->keepa_freq)
- : sprintf(page, "off\n");
- } else {
- printk(KERN_ERR "comxfr: internal error, filename %s\n", file->name);
- return -EBADF;
- }
-
- if (off >= len) {
- *eof = 1;
- return 0;
- }
-
- *start = page + off;
- if (count >= len - off) *eof = 1;
- return min_t(int, count, len - off);
-}
-
-static int fr_write_proc(struct file *file, const char *buffer,
- u_long count, void *data)
-{
- struct proc_dir_entry *entry = (struct proc_dir_entry *)data;
- struct net_device *dev = entry->parent->data;
- struct comx_channel *ch = dev->priv;
- struct fr_data *fr = NULL;
- char *page;
-
- if (ch) {
- fr = ch->LINE_privdata;
- }
-
- if (!(page = (char *)__get_free_page(GFP_KERNEL))) {
- return -ENOMEM;
- }
-
- if (copy_from_user(page, buffer, count)) {
- free_page((unsigned long)page);
- return -EFAULT;
- }
- if (*(page + count - 1) == '\n') {
- *(page + count - 1) = 0;
- }
-
- if (strcmp(entry->name, FILENAME_DLCI) == 0) {
- u16 dlci_new = simple_strtoul(page, NULL, 10);
-
- if (dlci_new > 1023) {
- printk(KERN_ERR "Invalid DLCI value\n");
- }
- else fr->dlci = dlci_new;
- } else if (strcmp(entry->name, FILENAME_MASTER) == 0) {
- struct net_device *new_master = dev_get_by_name(page);
-
- if (new_master && new_master->type == ARPHRD_FRAD) {
- struct comx_channel *sch = new_master->priv;
- struct fr_data *sfr = sch->LINE_privdata;
-
- if (sfr && sfr->master == new_master) {
- if(fr->master)
- dev_put(fr->master);
- fr->master = new_master;
- /* Megorokli a master statuszat */
- ch->line_status = sch->line_status;
- }
- }
- } else if (strcmp(entry->name, FILENAME_KEEPALIVE) == 0) {
- int keepa_new = -1;
-
- if (strcmp(page, KEEPALIVE_OFF) == 0) {
- keepa_new = 0;
- } else {
- keepa_new = simple_strtoul(page, NULL, 10);
- }
-
- if (keepa_new < 0 || keepa_new > 100) {
- printk(KERN_ERR "invalid keepalive\n");
- } else {
- if (fr->keepa_freq && keepa_new != fr->keepa_freq) {
- fr_set_keepalive(dev, 0);
- }
- if (keepa_new) {
- fr_set_keepalive(dev, keepa_new);
- }
- }
- } else {
- printk(KERN_ERR "comxfr_write_proc: internal error, filename %s\n",
- entry->name);
- count = -EBADF;
- }
-
- free_page((unsigned long)page);
- return count;
-}
-
-static int fr_exit(struct net_device *dev)
-{
- struct comx_channel *ch = dev->priv;
- struct fr_data *fr = ch->LINE_privdata;
- struct net_device *sdev = dev;
- struct comx_channel *sch;
- struct fr_data *sfr;
- struct proc_dir_entry *dir = ch->procdir->parent->subdir;
-
- /* Ha lezarunk egy master-t, le kell kattintani a slave-eket is */
- if (fr->master && fr->master == dev) {
- for (; dir ; dir = dir->next) {
- if(!S_ISDIR(dir->mode)) {
- continue;
- }
- if ((sdev = dir->data) && (sch = sdev->priv) &&
- (sdev->type == ARPHRD_DLCI) &&
- (sfr = sch->LINE_privdata) && (sfr->master == dev)) {
- dev_close(sdev);
- sfr->master = NULL;
- }
- }
- }
- dev->flags = 0;
- dev->type = 0;
- dev->mtu = 0;
- dev->hard_header_len = 0;
-
- ch->LINE_rx = NULL;
- ch->LINE_tx = NULL;
- ch->LINE_status = NULL;
- ch->LINE_open = NULL;
- ch->LINE_close = NULL;
- ch->LINE_xmit = NULL;
- ch->LINE_header = NULL;
- ch->LINE_rebuild_header = NULL;
- ch->LINE_statistics = NULL;
-
- ch->LINE_status = 0;
-
- if (fr->master != dev) { // if not master, remove dlci
- if(fr->master)
- dev_put(fr->master);
- remove_proc_entry(FILENAME_DLCI, ch->procdir);
- remove_proc_entry(FILENAME_MASTER, ch->procdir);
- } else {
- if (fr->keepa_freq) {
- fr_set_keepalive(dev, 0);
- }
- remove_proc_entry(FILENAME_KEEPALIVE, ch->procdir);
- remove_proc_entry(FILENAME_DLCI, ch->procdir);
- }
-
- kfree(fr);
- ch->LINE_privdata = NULL;
-
- MOD_DEC_USE_COUNT;
- return 0;
-}
-
-static int fr_master_init(struct net_device *dev)
-{
- struct comx_channel *ch = dev->priv;
- struct fr_data *fr;
- struct proc_dir_entry *new_file;
-
- if ((fr = ch->LINE_privdata = kmalloc(sizeof(struct fr_data),
- GFP_KERNEL)) == NULL) {
- return -ENOMEM;
- }
- memset(fr, 0, sizeof(struct fr_data));
- fr->master = dev; // this means master
- fr->dlci = 0; // let's say default
-
- dev->flags = IFF_POINTOPOINT | IFF_NOARP | IFF_MULTICAST;
- dev->type = ARPHRD_FRAD;
- dev->mtu = 1500;
- dev->hard_header_len = 4;
- dev->addr_len = 0;
-
- ch->LINE_rx = fr_rx;
- ch->LINE_tx = fr_tx;
- ch->LINE_status = fr_status;
- ch->LINE_open = fr_open;
- ch->LINE_close = fr_close;
- ch->LINE_xmit = fr_xmit;
- ch->LINE_header = fr_header;
- ch->LINE_rebuild_header = NULL;
- ch->LINE_statistics = fr_statistics;
-
- if ((new_file = create_proc_entry(FILENAME_DLCI, S_IFREG | 0644,
- ch->procdir)) == NULL) {
- goto cleanup_LINE_privdata;
- }
- new_file->data = (void *)new_file;
- new_file->read_proc = &fr_read_proc;
- new_file->write_proc = &fr_write_proc;
- new_file->size = 5;
- new_file->nlink = 1;
-
- if ((new_file = create_proc_entry(FILENAME_KEEPALIVE, S_IFREG | 0644,
- ch->procdir)) == NULL) {
- goto cleanup_filename_dlci;
- }
- new_file->data = (void *)new_file;
- new_file->read_proc = &fr_read_proc;
- new_file->write_proc = &fr_write_proc;
- new_file->size = 4;
- new_file->nlink = 1;
-
- fr_set_keepalive(dev, 0);
-
- MOD_INC_USE_COUNT;
- return 0;
-cleanup_filename_dlci:
- remove_proc_entry(FILENAME_DLCI, ch->procdir);
-cleanup_LINE_privdata:
- kfree(fr);
- return -EIO;
-}
-
-static int fr_slave_init(struct net_device *dev)
-{
- struct comx_channel *ch = dev->priv;
- struct fr_data *fr;
- struct proc_dir_entry *new_file;
-
- if ((fr = ch->LINE_privdata = kmalloc(sizeof(struct fr_data),
- GFP_KERNEL)) == NULL) {
- return -ENOMEM;
- }
- memset(fr, 0, sizeof(struct fr_data));
-
- dev->flags = IFF_POINTOPOINT | IFF_NOARP | IFF_MULTICAST;
- dev->type = ARPHRD_DLCI;
- dev->mtu = 1500;
- dev->hard_header_len = 4;
- dev->addr_len = 0;
-
- ch->LINE_rx = fr_rx;
- ch->LINE_tx = fr_tx;
- ch->LINE_status = fr_status;
- ch->LINE_open = fr_open;
- ch->LINE_close = fr_close;
- ch->LINE_xmit = fr_xmit;
- ch->LINE_header = fr_header;
- ch->LINE_rebuild_header = NULL;
- ch->LINE_statistics = fr_statistics;
-
- if ((new_file = create_proc_entry(FILENAME_DLCI, S_IFREG | 0644,
- ch->procdir)) == NULL) {
- goto cleanup_LINE_privdata;
- }
-
- new_file->data = (void *)new_file;
- new_file->read_proc = &fr_read_proc;
- new_file->write_proc = &fr_write_proc;
- new_file->size = 5;
- new_file->nlink = 1;
-
- if ((new_file = create_proc_entry(FILENAME_MASTER, S_IFREG | 0644,
- ch->procdir)) == NULL) {
- goto cleanup_filename_dlci;
- }
- new_file->data = (void *)new_file;
- new_file->read_proc = &fr_read_proc;
- new_file->write_proc = &fr_write_proc;
- new_file->size = 10;
- new_file->nlink = 1;
- MOD_INC_USE_COUNT;
- return 0;
-cleanup_filename_dlci:
- remove_proc_entry(FILENAME_DLCI, ch->procdir);
-cleanup_LINE_privdata:
- kfree(fr);
- return -EIO;
-}
-
-static int dlci_open(struct net_device *dev)
-{
- struct comx_channel *ch = dev->priv;
-
- ch->init_status |= HW_OPEN;
-
- MOD_INC_USE_COUNT;
- return 0;
-}
-
-static int dlci_close(struct net_device *dev)
-{
- struct comx_channel *ch = dev->priv;
-
- ch->init_status &= ~HW_OPEN;
-
- MOD_DEC_USE_COUNT;
- return 0;
-}
-
-static int dlci_txe(struct net_device *dev)
-{
- struct comx_channel *ch = dev->priv;
- struct fr_data *fr = ch->LINE_privdata;
-
- if (!fr->master) {
- return 0;
- }
-
- ch = fr->master->priv;
- fr = ch->LINE_privdata;
- return ch->HW_txe(fr->master);
-}
-
-static int dlci_statistics(struct net_device *dev, char *page)
-{
- return 0;
-}
-
-static int dlci_init(struct net_device *dev)
-{
- struct comx_channel *ch = dev->priv;
-
- ch->HW_open = dlci_open;
- ch->HW_close = dlci_close;
- ch->HW_txe = dlci_txe;
- ch->HW_statistics = dlci_statistics;
-
- /* Nincs egyeb hw info, mert ugyis a fr->master-bol fog minden kiderulni */
-
- MOD_INC_USE_COUNT;
- return 0;
-}
-
-static int dlci_exit(struct net_device *dev)
-{
- struct comx_channel *ch = dev->priv;
-
- ch->HW_open = NULL;
- ch->HW_close = NULL;
- ch->HW_txe = NULL;
- ch->HW_statistics = NULL;
-
- MOD_DEC_USE_COUNT;
- return 0;
-}
-
-static int dlci_dump(struct net_device *dev)
-{
- printk(KERN_INFO "dlci_dump %s, HOGY MI ???\n", dev->name);
- return -1;
-}
-
-static struct comx_protocol fr_master_protocol = {
- .name = "frad",
- .version = VERSION,
- .encap_type = ARPHRD_FRAD,
- .line_init = fr_master_init,
- .line_exit = fr_exit,
-};
-
-static struct comx_protocol fr_slave_protocol = {
- .name = "ietf-ip",
- .version = VERSION,
- .encap_type = ARPHRD_DLCI,
- .line_init = fr_slave_init,
- .line_exit = fr_exit,
-};
-
-static struct comx_hardware fr_dlci = {
- .name = "dlci",
- .version = VERSION,
- .hw_init = dlci_init,
- .hw_exit = dlci_exit,
- .hw_dump = dlci_dump,
-};
-
-static int __init comx_proto_fr_init(void)
-{
- int ret;
-
- if ((ret = comx_register_hardware(&fr_dlci))) {
- return ret;
- }
- if ((ret = comx_register_protocol(&fr_master_protocol))) {
- return ret;
- }
- return comx_register_protocol(&fr_slave_protocol);
-}
-
-static void __exit comx_proto_fr_exit(void)
-{
- comx_unregister_hardware(fr_dlci.name);
- comx_unregister_protocol(fr_master_protocol.name);
- comx_unregister_protocol(fr_slave_protocol.name);
-}
-
-module_init(comx_proto_fr_init);
-module_exit(comx_proto_fr_exit);
+++ /dev/null
-/*
- * LAPB protocol module for the COMX driver
- * for Linux kernel 2.2.X
- *
- * Original author: Tivadar Szemethy <tiv@itc.hu>
- * Maintainer: Gergely Madarasz <gorgo@itc.hu>
- *
- * Copyright (C) 1997-1999 (C) ITConsult-Pro Co. <info@itc.hu>
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- *
- * Version 0.80 (99/06/14):
- * - cleaned up the source code a bit
- * - ported back to kernel, now works as non-module
- *
- * Changed (00/10/29, Henner Eisen):
- * - comx_rx() / comxlapb_data_indication() return status.
- *
- */
-
-#define VERSION "0.80"
-
-#include <linux/module.h>
-#include <linux/types.h>
-#include <linux/netdevice.h>
-#include <linux/proc_fs.h>
-#include <linux/if_arp.h>
-#include <linux/inetdevice.h>
-#include <asm/uaccess.h>
-#include <linux/lapb.h>
-#include <linux/init.h>
-
-#include "comx.h"
-#include "comxhw.h"
-
-static struct proc_dir_entry *create_comxlapb_proc_entry(char *name, int mode,
- int size, struct proc_dir_entry *dir);
-
-static void comxlapb_rx(struct net_device *dev, struct sk_buff *skb)
-{
- if (!dev || !dev->priv) {
- dev_kfree_skb(skb);
- } else {
- lapb_data_received(dev, skb);
- }
-}
-
-static int comxlapb_tx(struct net_device *dev)
-{
- netif_wake_queue(dev);
- return 0;
-}
-
-static int comxlapb_header(struct sk_buff *skb, struct net_device *dev,
- unsigned short type, void *daddr, void *saddr, unsigned len)
-{
- return dev->hard_header_len;
-}
-
-static void comxlapb_status(struct net_device *dev, unsigned short status)
-{
- struct comx_channel *ch;
-
- if (!dev || !(ch = dev->priv)) {
- return;
- }
- if (status & LINE_UP) {
- netif_wake_queue(dev);
- }
- comx_status(dev, status);
-}
-
-static int comxlapb_open(struct net_device *dev)
-{
- struct comx_channel *ch = dev->priv;
- int err = 0;
-
- if (!(ch->init_status & HW_OPEN)) {
- return -ENODEV;
- }
-
- err = lapb_connect_request(dev);
-
- if (ch->debug_flags & DEBUG_COMX_LAPB) {
- comx_debug(dev, "%s: lapb opened, error code: %d\n",
- dev->name, err);
- }
-
- if (!err) {
- ch->init_status |= LINE_OPEN;
- MOD_INC_USE_COUNT;
- }
- return err;
-}
-
-static int comxlapb_close(struct net_device *dev)
-{
- struct comx_channel *ch = dev->priv;
-
- if (!(ch->init_status & HW_OPEN)) {
- return -ENODEV;
- }
-
- if (ch->debug_flags & DEBUG_COMX_LAPB) {
- comx_debug(dev, "%s: lapb closed\n", dev->name);
- }
-
- lapb_disconnect_request(dev);
-
- ch->init_status &= ~LINE_OPEN;
- ch->line_status &= ~PROTO_UP;
- MOD_DEC_USE_COUNT;
- return 0;
-}
-
-static int comxlapb_xmit(struct sk_buff *skb, struct net_device *dev)
-{
- struct comx_channel *ch = dev->priv;
- struct sk_buff *skb2;
-
- if (!dev || !(ch = dev->priv) || !(dev->flags & (IFF_UP | IFF_RUNNING))) {
- return -ENODEV;
- }
-
- if (dev->type == ARPHRD_X25) { // first byte tells what to do
- switch(skb->data[0]) {
- case 0x00:
- break; // transmit
- case 0x01:
- lapb_connect_request(dev);
- kfree_skb(skb);
- return 0;
- case 0x02:
- lapb_disconnect_request(dev);
- default:
- kfree_skb(skb);
- return 0;
- }
- skb_pull(skb,1);
- }
-
- netif_stop_queue(dev);
-
- if ((skb2 = skb_clone(skb, GFP_ATOMIC)) != NULL) {
- lapb_data_request(dev, skb2);
- }
-
- return FRAME_ACCEPTED;
-}
-
-static int comxlapb_statistics(struct net_device *dev, char *page)
-{
- struct lapb_parms_struct parms;
- int len = 0;
-
- len += sprintf(page + len, "Line status: ");
- if (lapb_getparms(dev, &parms) != LAPB_OK) {
- len += sprintf(page + len, "not initialized\n");
- return len;
- }
- len += sprintf(page + len, "%s (%s), T1: %d/%d, T2: %d/%d, N2: %d/%d, "
- "window: %d\n", parms.mode & LAPB_DCE ? "DCE" : "DTE",
- parms.mode & LAPB_EXTENDED ? "EXTENDED" : "STANDARD",
- parms.t1timer, parms.t1, parms.t2timer, parms.t2,
- parms.n2count, parms.n2, parms.window);
-
- return len;
-}
-
-static int comxlapb_read_proc(char *page, char **start, off_t off, int count,
- int *eof, void *data)
-{
- struct proc_dir_entry *file = (struct proc_dir_entry *)data;
- struct net_device *dev = file->parent->data;
- struct lapb_parms_struct parms;
- int len = 0;
-
- if (lapb_getparms(dev, &parms)) {
- return -ENODEV;
- }
-
- if (strcmp(file->name, FILENAME_T1) == 0) {
- len += sprintf(page + len, "%02u / %02u\n",
- parms.t1timer, parms.t1);
- } else if (strcmp(file->name, FILENAME_T2) == 0) {
- len += sprintf(page + len, "%02u / %02u\n",
- parms.t2timer, parms.t2);
- } else if (strcmp(file->name, FILENAME_N2) == 0) {
- len += sprintf(page + len, "%02u / %02u\n",
- parms.n2count, parms.n2);
- } else if (strcmp(file->name, FILENAME_WINDOW) == 0) {
- len += sprintf(page + len, "%u\n", parms.window);
- } else if (strcmp(file->name, FILENAME_MODE) == 0) {
- len += sprintf(page + len, "%s, %s\n",
- parms.mode & LAPB_DCE ? "DCE" : "DTE",
- parms.mode & LAPB_EXTENDED ? "EXTENDED" : "STANDARD");
- } else {
- printk(KERN_ERR "comxlapb: internal error, filename %s\n", file->name);
- return -EBADF;
- }
-
- if (off >= len) {
- *eof = 1;
- return 0;
- }
-
- *start = page + off;
- if (count >= len - off) {
- *eof = 1;
- }
- return min_t(int, count, len - off);
-}
-
-static int comxlapb_write_proc(struct file *file, const char *buffer,
- u_long count, void *data)
-{
- struct proc_dir_entry *entry = (struct proc_dir_entry *)data;
- struct net_device *dev = entry->parent->data;
- struct lapb_parms_struct parms;
- unsigned long parm;
- char *page;
-
- if (lapb_getparms(dev, &parms)) {
- return -ENODEV;
- }
-
- if (!(page = (char *)__get_free_page(GFP_KERNEL))) {
- return -ENOMEM;
- }
-
- if (copy_from_user(page, buffer, count)) {
- free_page((unsigned long)page);
- return -EFAULT;
- }
- if (*(page + count - 1) == '\n') {
- *(page + count - 1) = 0;
- }
-
- if (strcmp(entry->name, FILENAME_T1) == 0) {
- parm=simple_strtoul(page,NULL,10);
- if (parm > 0 && parm < 100) {
- parms.t1=parm;
- lapb_setparms(dev, &parms);
- }
- } else if (strcmp(entry->name, FILENAME_T2) == 0) {
- parm=simple_strtoul(page, NULL, 10);
- if (parm > 0 && parm < 100) {
- parms.t2=parm;
- lapb_setparms(dev, &parms);
- }
- } else if (strcmp(entry->name, FILENAME_N2) == 0) {
- parm=simple_strtoul(page, NULL, 10);
- if (parm > 0 && parm < 100) {
- parms.n2=parm;
- lapb_setparms(dev, &parms);
- }
- } else if (strcmp(entry->name, FILENAME_WINDOW) == 0) {
- parms.window = simple_strtoul(page, NULL, 10);
- lapb_setparms(dev, &parms);
- } else if (strcmp(entry->name, FILENAME_MODE) == 0) {
- if (comx_strcasecmp(page, "dte") == 0) {
- parms.mode &= ~(LAPB_DCE | LAPB_DTE);
- parms.mode |= LAPB_DTE;
- } else if (comx_strcasecmp(page, "dce") == 0) {
- parms.mode &= ~(LAPB_DTE | LAPB_DCE);
- parms.mode |= LAPB_DCE;
- } else if (comx_strcasecmp(page, "std") == 0 ||
- comx_strcasecmp(page, "standard") == 0) {
- parms.mode &= ~LAPB_EXTENDED;
- parms.mode |= LAPB_STANDARD;
- } else if (comx_strcasecmp(page, "ext") == 0 ||
- comx_strcasecmp(page, "extended") == 0) {
- parms.mode &= ~LAPB_STANDARD;
- parms.mode |= LAPB_EXTENDED;
- }
- lapb_setparms(dev, &parms);
- } else {
- printk(KERN_ERR "comxlapb_write_proc: internal error, filename %s\n",
- entry->name);
- return -EBADF;
- }
-
- free_page((unsigned long)page);
- return count;
-}
-
-static void comxlapb_connected(struct net_device *dev, int reason)
-{
- struct comx_channel *ch = dev->priv;
- struct proc_dir_entry *comxdir = ch->procdir->subdir;
-
- if (ch->debug_flags & DEBUG_COMX_LAPB) {
- comx_debug(ch->dev, "%s: lapb connected, reason: %d\n",
- ch->dev->name, reason);
- }
-
- if (ch->dev->type == ARPHRD_X25) {
- unsigned char *p;
- struct sk_buff *skb;
-
- if ((skb = dev_alloc_skb(1)) == NULL) {
- printk(KERN_ERR "comxlapb: out of memory!\n");
- return;
- }
- p = skb_put(skb,1);
- *p = 0x01; // link established
- skb->dev = ch->dev;
- skb->protocol = htons(ETH_P_X25);
- skb->mac.raw = skb->data;
- skb->pkt_type = PACKET_HOST;
-
- netif_rx(skb);
- ch->dev->last_rx = jiffies;
- }
-
- for (; comxdir; comxdir = comxdir->next) {
- if (strcmp(comxdir->name, FILENAME_MODE) == 0) {
- comxdir->mode = S_IFREG | 0444;
- }
- }
-
-
- ch->line_status |= PROTO_UP;
- comx_status(ch->dev, ch->line_status);
-}
-
-static void comxlapb_disconnected(struct net_device *dev, int reason)
-{
- struct comx_channel *ch = dev->priv;
- struct proc_dir_entry *comxdir = ch->procdir->subdir;
-
- if (ch->debug_flags & DEBUG_COMX_LAPB) {
- comx_debug(ch->dev, "%s: lapb disconnected, reason: %d\n",
- ch->dev->name, reason);
- }
-
- if (ch->dev->type == ARPHRD_X25) {
- unsigned char *p;
- struct sk_buff *skb;
-
- if ((skb = dev_alloc_skb(1)) == NULL) {
- printk(KERN_ERR "comxlapb: out of memory!\n");
- return;
- }
- p = skb_put(skb,1);
- *p = 0x02; // link disconnected
- skb->dev = ch->dev;
- skb->protocol = htons(ETH_P_X25);
- skb->mac.raw = skb->data;
- skb->pkt_type = PACKET_HOST;
-
- netif_rx(skb);
- ch->dev->last_rx = jiffies;
- }
-
- for (; comxdir; comxdir = comxdir->next) {
- if (strcmp(comxdir->name, FILENAME_MODE) == 0) {
- comxdir->mode = S_IFREG | 0644;
- }
- }
-
- ch->line_status &= ~PROTO_UP;
- comx_status(ch->dev, ch->line_status);
-}
-
-static int comxlapb_data_indication(struct net_device *dev, struct sk_buff *skb)
-{
- struct comx_channel *ch = dev->priv;
-
- if (ch->dev->type == ARPHRD_X25) {
- skb_push(skb, 1);
-
- if (skb_cow(skb, 1))
- return NET_RX_DROP;
-
- skb->data[0] = 0; // indicate data for X25
- skb->protocol = htons(ETH_P_X25);
- } else {
- skb->protocol = htons(ETH_P_IP);
- }
-
- skb->dev = ch->dev;
- skb->mac.raw = skb->data;
- return comx_rx(ch->dev, skb);
-}
-
-static void comxlapb_data_transmit(struct net_device *dev, struct sk_buff *skb)
-{
- struct comx_channel *ch = dev->priv;
-
- if (ch->HW_send_packet) {
- ch->HW_send_packet(ch->dev, skb);
- }
-}
-
-static int comxlapb_exit(struct net_device *dev)
-{
- struct comx_channel *ch = dev->priv;
-
- dev->flags = 0;
- dev->type = 0;
- dev->mtu = 0;
- dev->hard_header_len = 0;
-
- ch->LINE_rx = NULL;
- ch->LINE_tx = NULL;
- ch->LINE_status = NULL;
- ch->LINE_open = NULL;
- ch->LINE_close = NULL;
- ch->LINE_xmit = NULL;
- ch->LINE_header = NULL;
- ch->LINE_statistics = NULL;
-
- if (ch->debug_flags & DEBUG_COMX_LAPB) {
- comx_debug(dev, "%s: unregistering lapb\n", dev->name);
- }
- lapb_unregister(dev);
-
- remove_proc_entry(FILENAME_T1, ch->procdir);
- remove_proc_entry(FILENAME_T2, ch->procdir);
- remove_proc_entry(FILENAME_N2, ch->procdir);
- remove_proc_entry(FILENAME_MODE, ch->procdir);
- remove_proc_entry(FILENAME_WINDOW, ch->procdir);
-
- MOD_DEC_USE_COUNT;
- return 0;
-}
-
-static int comxlapb_init(struct net_device *dev)
-{
- struct comx_channel *ch = dev->priv;
- struct lapb_register_struct lapbreg;
-
- dev->mtu = 1500;
- dev->hard_header_len = 4;
- dev->addr_len = 0;
-
- ch->LINE_rx = comxlapb_rx;
- ch->LINE_tx = comxlapb_tx;
- ch->LINE_status = comxlapb_status;
- ch->LINE_open = comxlapb_open;
- ch->LINE_close = comxlapb_close;
- ch->LINE_xmit = comxlapb_xmit;
- ch->LINE_header = comxlapb_header;
- ch->LINE_statistics = comxlapb_statistics;
-
- lapbreg.connect_confirmation = comxlapb_connected;
- lapbreg.connect_indication = comxlapb_connected;
- lapbreg.disconnect_confirmation = comxlapb_disconnected;
- lapbreg.disconnect_indication = comxlapb_disconnected;
- lapbreg.data_indication = comxlapb_data_indication;
- lapbreg.data_transmit = comxlapb_data_transmit;
- if (lapb_register(dev, &lapbreg)) {
- return -ENOMEM;
- }
- if (ch->debug_flags & DEBUG_COMX_LAPB) {
- comx_debug(dev, "%s: lapb registered\n", dev->name);
- }
-
- if (!create_comxlapb_proc_entry(FILENAME_T1, 0644, 8, ch->procdir)) {
- return -ENOMEM;
- }
- if (!create_comxlapb_proc_entry(FILENAME_T2, 0644, 8, ch->procdir)) {
- return -ENOMEM;
- }
- if (!create_comxlapb_proc_entry(FILENAME_N2, 0644, 8, ch->procdir)) {
- return -ENOMEM;
- }
- if (!create_comxlapb_proc_entry(FILENAME_MODE, 0644, 14, ch->procdir)) {
- return -ENOMEM;
- }
- if (!create_comxlapb_proc_entry(FILENAME_WINDOW, 0644, 0, ch->procdir)) {
- return -ENOMEM;
- }
-
- MOD_INC_USE_COUNT;
- return 0;
-}
-
-static int comxlapb_init_lapb(struct net_device *dev)
-{
- dev->flags = IFF_POINTOPOINT | IFF_NOARP | IFF_MULTICAST;
- dev->type = ARPHRD_LAPB;
-
- return(comxlapb_init(dev));
-}
-
-static int comxlapb_init_x25(struct net_device *dev)
-{
- dev->flags = IFF_NOARP;
- dev->type = ARPHRD_X25;
-
- return(comxlapb_init(dev));
-}
-
-static struct proc_dir_entry *create_comxlapb_proc_entry(char *name, int mode,
- int size, struct proc_dir_entry *dir)
-{
- struct proc_dir_entry *new_file;
-
- if ((new_file = create_proc_entry(name, S_IFREG | mode, dir)) != NULL) {
- new_file->data = (void *)new_file;
- new_file->read_proc = &comxlapb_read_proc;
- new_file->write_proc = &comxlapb_write_proc;
- new_file->size = size;
- new_file->nlink = 1;
- }
- return(new_file);
-}
-
-static struct comx_protocol comxlapb_protocol = {
- "lapb",
- VERSION,
- ARPHRD_LAPB,
- comxlapb_init_lapb,
- comxlapb_exit,
- NULL
-};
-
-static struct comx_protocol comx25_protocol = {
- "x25",
- VERSION,
- ARPHRD_X25,
- comxlapb_init_x25,
- comxlapb_exit,
- NULL
-};
-
-static int __init comx_proto_lapb_init(void)
-{
- int ret;
-
- if ((ret = comx_register_protocol(&comxlapb_protocol)) != 0) {
- return ret;
- }
- return comx_register_protocol(&comx25_protocol);
-}
-
-static void __exit comx_proto_lapb_exit(void)
-{
- comx_unregister_protocol(comxlapb_protocol.name);
- comx_unregister_protocol(comx25_protocol.name);
-}
-
-module_init(comx_proto_lapb_init);
-module_exit(comx_proto_lapb_exit);
-
-MODULE_LICENSE("GPL");
+++ /dev/null
-/*
- * Synchronous PPP / Cisco-HDLC driver for the COMX boards
- *
- * Author: Gergely Madarasz <gorgo@itc.hu>
- *
- * based on skeleton code by Tivadar Szemethy <tiv@itc.hu>
- *
- * Copyright (C) 1999 ITConsult-Pro Co. <info@itc.hu>
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- *
- *
- * Version 0.10 (99/06/10):
- * - written the first code :)
- *
- * Version 0.20 (99/06/16):
- * - added hdlc protocol
- * - protocol up is IFF_RUNNING
- *
- * Version 0.21 (99/07/15):
- * - some small fixes with the line status
- *
- * Version 0.22 (99/08/05):
- * - don't test IFF_RUNNING but the pp_link_state of the sppp
- *
- * Version 0.23 (99/12/02):
- * - tbusy fixes
- *
- */
-
-#define VERSION "0.23"
-
-#include <linux/module.h>
-#include <linux/types.h>
-#include <linux/jiffies.h>
-#include <linux/netdevice.h>
-#include <linux/proc_fs.h>
-#include <linux/if_arp.h>
-#include <linux/inetdevice.h>
-#include <asm/uaccess.h>
-#include <linux/init.h>
-
-#include <net/syncppp.h>
-#include "comx.h"
-
-MODULE_AUTHOR("Author: Gergely Madarasz <gorgo@itc.hu>");
-MODULE_DESCRIPTION("Cisco-HDLC / Synchronous PPP driver for the COMX sync serial boards");
-MODULE_LICENSE("GPL");
-
-static struct comx_protocol syncppp_protocol;
-static struct comx_protocol hdlc_protocol;
-
-struct syncppp_data {
- struct timer_list status_timer;
-};
-
-static void syncppp_status_timerfun(unsigned long d) {
- struct net_device *dev=(struct net_device *)d;
- struct comx_channel *ch=dev->priv;
- struct syncppp_data *spch=ch->LINE_privdata;
- struct sppp *sp = (struct sppp *)sppp_of(dev);
-
- if(!(ch->line_status & PROTO_UP) &&
- (sp->pp_link_state==SPPP_LINK_UP)) {
- comx_status(dev, ch->line_status | PROTO_UP);
- }
- if((ch->line_status & PROTO_UP) &&
- (sp->pp_link_state==SPPP_LINK_DOWN)) {
- comx_status(dev, ch->line_status & ~PROTO_UP);
- }
- mod_timer(&spch->status_timer,jiffies + HZ*3);
-}
-
-static int syncppp_tx(struct net_device *dev)
-{
- struct comx_channel *ch=dev->priv;
-
- if(ch->line_status & LINE_UP) {
- netif_wake_queue(dev);
- }
- return 0;
-}
-
-static void syncppp_status(struct net_device *dev, unsigned short status)
-{
- status &= ~(PROTO_UP | PROTO_LOOP);
- if(status & LINE_UP) {
- netif_wake_queue(dev);
- sppp_open(dev);
- } else {
- /* Line went down */
- netif_stop_queue(dev);
- sppp_close(dev);
- }
- comx_status(dev, status);
-}
-
-static int syncppp_open(struct net_device *dev)
-{
- struct comx_channel *ch = dev->priv;
- struct syncppp_data *spch = ch->LINE_privdata;
-
- if (!(ch->init_status & HW_OPEN)) return -ENODEV;
-
- ch->init_status |= LINE_OPEN;
- ch->line_status &= ~(PROTO_UP | PROTO_LOOP);
-
- if(ch->line_status & LINE_UP) {
- sppp_open(dev);
- }
-
- init_timer(&spch->status_timer);
- spch->status_timer.function=syncppp_status_timerfun;
- spch->status_timer.data=(unsigned long)dev;
- spch->status_timer.expires=jiffies + HZ*3;
- add_timer(&spch->status_timer);
-
- return 0;
-}
-
-static int syncppp_close(struct net_device *dev)
-{
- struct comx_channel *ch = dev->priv;
- struct syncppp_data *spch = ch->LINE_privdata;
-
- if (!(ch->init_status & HW_OPEN)) return -ENODEV;
- del_timer(&spch->status_timer);
-
- sppp_close(dev);
-
- ch->init_status &= ~LINE_OPEN;
- ch->line_status &= ~(PROTO_UP | PROTO_LOOP);
-
- return 0;
-}
-
-static int syncppp_xmit(struct sk_buff *skb, struct net_device *dev)
-{
- struct comx_channel *ch = dev->priv;
-
- netif_stop_queue(dev);
- switch(ch->HW_send_packet(dev, skb)) {
- case FRAME_QUEUED:
- netif_wake_queue(dev);
- break;
- case FRAME_ACCEPTED:
- case FRAME_DROPPED:
- break;
- case FRAME_ERROR:
- printk(KERN_ERR "%s: Transmit frame error (len %d)\n",
- dev->name, skb->len);
- break;
- }
- return 0;
-}
-
-
-static int syncppp_statistics(struct net_device *dev, char *page)
-{
- int len = 0;
-
- len += sprintf(page + len, " ");
- return len;
-}
-
-
-static int syncppp_exit(struct net_device *dev)
-{
- struct comx_channel *ch = dev->priv;
-
- sppp_detach(dev);
-
- dev->flags = 0;
- dev->type = 0;
- dev->mtu = 0;
-
- ch->LINE_rx = NULL;
- ch->LINE_tx = NULL;
- ch->LINE_status = NULL;
- ch->LINE_open = NULL;
- ch->LINE_close = NULL;
- ch->LINE_xmit = NULL;
- ch->LINE_header = NULL;
- ch->LINE_rebuild_header = NULL;
- ch->LINE_statistics = NULL;
-
- kfree(ch->LINE_privdata);
- ch->LINE_privdata = NULL;
-
- MOD_DEC_USE_COUNT;
- return 0;
-}
-
-static int syncppp_init(struct net_device *dev)
-{
- struct comx_channel *ch = dev->priv;
- struct ppp_device *pppdev = (struct ppp_device *)ch->if_ptr;
-
- ch->LINE_privdata = kmalloc(sizeof(struct syncppp_data), GFP_KERNEL);
- if (!ch->LINE_privdata)
- return -ENOMEM;
-
- pppdev->dev = dev;
- sppp_attach(pppdev);
-
- if(ch->protocol == &hdlc_protocol) {
- pppdev->sppp.pp_flags |= PP_CISCO;
- dev->type = ARPHRD_HDLC;
- } else {
- pppdev->sppp.pp_flags &= ~PP_CISCO;
- dev->type = ARPHRD_PPP;
- }
-
- ch->LINE_rx = sppp_input;
- ch->LINE_tx = syncppp_tx;
- ch->LINE_status = syncppp_status;
- ch->LINE_open = syncppp_open;
- ch->LINE_close = syncppp_close;
- ch->LINE_xmit = syncppp_xmit;
- ch->LINE_header = NULL;
- ch->LINE_statistics = syncppp_statistics;
-
-
- MOD_INC_USE_COUNT;
- return 0;
-}
-
-static struct comx_protocol syncppp_protocol = {
- "ppp",
- VERSION,
- ARPHRD_PPP,
- syncppp_init,
- syncppp_exit,
- NULL
-};
-
-static struct comx_protocol hdlc_protocol = {
- "hdlc",
- VERSION,
- ARPHRD_PPP,
- syncppp_init,
- syncppp_exit,
- NULL
-};
-
-static int __init comx_proto_ppp_init(void)
-{
- int ret;
-
- ret = comx_register_protocol(&hdlc_protocol);
- if (!ret) {
- ret = comx_register_protocol(&syncppp_protocol);
- if (ret)
- comx_unregister_protocol(hdlc_protocol.name);
- }
- return ret;
-}
-
-static void __exit comx_proto_ppp_exit(void)
-{
- comx_unregister_protocol(syncppp_protocol.name);
- comx_unregister_protocol(hdlc_protocol.name);
-}
-
-module_init(comx_proto_ppp_init);
-module_exit(comx_proto_ppp_exit);
+++ /dev/null
-/*
- * Device driver framework for the COMX line of synchronous serial boards
- *
- * for Linux kernel 2.2.X / 2.4.X
- *
- * Original authors: Arpad Bakay <bakay.arpad@synergon.hu>,
- * Peter Bajan <bajan.peter@synergon.hu>,
- * Previous maintainer: Tivadar Szemethy <tiv@itc.hu>
- * Current maintainer: Gergely Madarasz <gorgo@itc.hu>
- *
- * Copyright (C) 1995-1999 ITConsult-Pro Co.
- *
- * Contributors:
- * Arnaldo Carvalho de Melo <acme@conectiva.com.br> (0.85)
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- *
- * Version 0.80 (99/06/11):
- * - clean up source code (playing a bit of indent)
- * - port back to kernel, add support for non-module versions
- * - add support for board resets when channel protocol is down
- * - reset the device structure after protocol exit
- * the syncppp driver needs it
- * - add support for /proc/comx/protocols and
- * /proc/comx/boardtypes
- *
- * Version 0.81 (99/06/21):
- * - comment out the board reset support code, the locomx
- * driver seems not buggy now
- * - printk() levels fixed
- *
- * Version 0.82 (99/07/08):
- * - Handle stats correctly if the lowlevel driver is
- * is not a comx one (locomx - z85230)
- *
- * Version 0.83 (99/07/15):
- * - reset line_status when interface is down
- *
- * Version 0.84 (99/12/01):
- * - comx_status should not check for IFF_UP (to report
- * line status from dev->open())
- *
- * Version 0.85 (00/08/15):
- * - resource release on failure in comx_mkdir
- * - fix return value on failure at comx_write_proc
- *
- * Changed (00/10/29, Henner Eisen):
- * - comx_rx() / comxlapb_data_indication() return status.
- */
-
-#define VERSION "0.85"
-
-#include <linux/config.h>
-#include <linux/module.h>
-
-#include <linux/types.h>
-#include <linux/jiffies.h>
-#include <linux/netdevice.h>
-#include <linux/proc_fs.h>
-#include <asm/uaccess.h>
-#include <linux/ctype.h>
-#include <linux/init.h>
-#include <linux/smp_lock.h>
-
-#ifdef CONFIG_KMOD
-#include <linux/kmod.h>
-#endif
-
-#ifndef CONFIG_PROC_FS
-#error For now, COMX really needs the /proc filesystem
-#endif
-
-#include <net/syncppp.h>
-#include "comx.h"
-
-MODULE_AUTHOR("Gergely Madarasz <gorgo@itc.hu>");
-MODULE_DESCRIPTION("Common code for the COMX synchronous serial adapters");
-MODULE_LICENSE("GPL");
-
-static struct comx_hardware *comx_channels = NULL;
-static struct comx_protocol *comx_lines = NULL;
-
-static int comx_mkdir(struct inode *, struct dentry *, int);
-static int comx_rmdir(struct inode *, struct dentry *);
-static struct dentry *comx_lookup(struct inode *, struct dentry *, struct nameidata *);
-
-static struct inode_operations comx_root_inode_ops = {
- .lookup = comx_lookup,
- .mkdir = comx_mkdir,
- .rmdir = comx_rmdir,
-};
-
-static int comx_delete_dentry(struct dentry *dentry);
-static struct proc_dir_entry *create_comx_proc_entry(char *name, int mode,
- int size, struct proc_dir_entry *dir);
-
-static struct dentry_operations comx_dentry_operations = {
- .d_delete = comx_delete_dentry,
-};
-
-
-static struct proc_dir_entry * comx_root_dir;
-
-struct comx_debugflags_struct comx_debugflags[] = {
- { "comx_rx", DEBUG_COMX_RX },
- { "comx_tx", DEBUG_COMX_TX },
- { "hw_tx", DEBUG_HW_TX },
- { "hw_rx", DEBUG_HW_RX },
- { "hdlc_keepalive", DEBUG_HDLC_KEEPALIVE },
- { "comxppp", DEBUG_COMX_PPP },
- { "comxlapb", DEBUG_COMX_LAPB },
- { "dlci", DEBUG_COMX_DLCI },
- { NULL, 0 }
-};
-
-
-int comx_debug(struct net_device *dev, char *fmt, ...)
-{
- struct comx_channel *ch = dev->priv;
- char *page,*str;
- va_list args;
- int len;
-
- if (!ch->debug_area) return 0;
-
- if (!(page = (char *)__get_free_page(GFP_ATOMIC))) return -ENOMEM;
-
- va_start(args, fmt);
- len = vsprintf(str = page, fmt, args);
- va_end(args);
-
- if (len >= PAGE_SIZE) {
- printk(KERN_ERR "comx_debug: PANIC! len = %d !!!\n", len);
- free_page((unsigned long)page);
- return -EINVAL;
- }
-
- while (len) {
- int to_copy;
- int free = (ch->debug_start - ch->debug_end + ch->debug_size)
- % ch->debug_size;
-
- to_copy = min_t(int, free ? free : ch->debug_size,
- min_t(int, ch->debug_size - ch->debug_end, len));
- memcpy(ch->debug_area + ch->debug_end, str, to_copy);
- str += to_copy;
- len -= to_copy;
- ch->debug_end = (ch->debug_end + to_copy) % ch->debug_size;
- if (ch->debug_start == ch->debug_end) // Full ? push start away
- ch->debug_start = (ch->debug_start + len + 1) %
- ch->debug_size;
- ch->debug_file->size = (ch->debug_end - ch->debug_start +
- ch->debug_size) % ch->debug_size;
- }
-
- free_page((unsigned long)page);
- return 0;
-}
-
-int comx_debug_skb(struct net_device *dev, struct sk_buff *skb, char *msg)
-{
- struct comx_channel *ch = dev->priv;
-
- if (!ch->debug_area) return 0;
- if (!skb) comx_debug(dev, "%s: %s NULL skb\n\n", dev->name, msg);
- if (!skb->len) comx_debug(dev, "%s: %s empty skb\n\n", dev->name, msg);
-
- return comx_debug_bytes(dev, skb->data, skb->len, msg);
-}
-
-int comx_debug_bytes(struct net_device *dev, unsigned char *bytes, int len,
- char *msg)
-{
- int pos = 0;
- struct comx_channel *ch = dev->priv;
-
- if (!ch->debug_area) return 0;
-
- comx_debug(dev, "%s: %s len %d\n", dev->name, msg, len);
-
- while (pos != len) {
- char line[80];
- int i = 0;
-
- memset(line, 0, 80);
- sprintf(line,"%04d ", pos);
- do {
- sprintf(line + 5 + (pos % 16) * 3, "%02x", bytes[pos]);
- sprintf(line + 60 + (pos % 16), "%c",
- isprint(bytes[pos]) ? bytes[pos] : '.');
- pos++;
- } while (pos != len && pos % 16);
-
- while ( i++ != 78 ) if (line[i] == 0) line[i] = ' ';
- line[77] = '\n';
- line[78] = 0;
-
- comx_debug(dev, "%s", line);
- }
- comx_debug(dev, "\n");
- return 0;
-}
-
-static void comx_loadavg_timerfun(unsigned long d)
-{
- struct net_device *dev = (struct net_device *)d;
- struct comx_channel *ch = dev->priv;
-
- ch->avg_bytes[ch->loadavg_counter] = ch->current_stats->rx_bytes;
- ch->avg_bytes[ch->loadavg_counter + ch->loadavg_size] =
- ch->current_stats->tx_bytes;
-
- ch->loadavg_counter = (ch->loadavg_counter + 1) % ch->loadavg_size;
-
- mod_timer(&ch->loadavg_timer,jiffies + HZ * ch->loadavg[0]);
-}
-
-#if 0
-static void comx_reset_timerfun(unsigned long d)
-{
- struct net_device *dev = (struct net_device *)d;
- struct comx_channel *ch = dev->priv;
-
- if(!(ch->line_status & (PROTO_LOOP | PROTO_UP))) {
- if(test_and_set_bit(0,&ch->reset_pending) && ch->HW_reset) {
- ch->HW_reset(dev);
- }
- }
-
- mod_timer(&ch->reset_timer, jiffies + HZ * ch->reset_timeout);
-}
-#endif
-
-static int comx_open(struct net_device *dev)
-{
- struct comx_channel *ch = dev->priv;
- struct proc_dir_entry *comxdir = ch->procdir->subdir;
- int ret=0;
-
- if (!ch->protocol || !ch->hardware) return -ENODEV;
-
- if ((ret = ch->HW_open(dev))) return ret;
- if ((ret = ch->LINE_open(dev))) {
- ch->HW_close(dev);
- return ret;
- };
-
- for (; comxdir ; comxdir = comxdir->next) {
- if (strcmp(comxdir->name, FILENAME_HARDWARE) == 0 ||
- strcmp(comxdir->name, FILENAME_PROTOCOL) == 0)
- comxdir->mode = S_IFREG | 0444;
- }
-
-#if 0
- ch->reset_pending = 1;
- ch->reset_timeout = 30;
- ch->reset_timer.function = comx_reset_timerfun;
- ch->reset_timer.data = (unsigned long)dev;
- ch->reset_timer.expires = jiffies + HZ * ch->reset_timeout;
- add_timer(&ch->reset_timer);
-#endif
-
- return 0;
-}
-
-static int comx_close(struct net_device *dev)
-{
- struct comx_channel *ch = dev->priv;
- struct proc_dir_entry *comxdir = ch->procdir->subdir;
- int ret = -ENODEV;
-
- if (test_and_clear_bit(0, &ch->lineup_pending)) {
- del_timer(&ch->lineup_timer);
- }
-
-#if 0
- del_timer(&ch->reset_timer);
-#endif
-
- if (ch->init_status & LINE_OPEN && ch->protocol && ch->LINE_close) {
- ret = ch->LINE_close(dev);
- }
-
- if (ret) return ret;
-
- if (ch->init_status & HW_OPEN && ch->hardware && ch->HW_close) {
- ret = ch->HW_close(dev);
- }
-
- ch->line_status=0;
-
- for (; comxdir ; comxdir = comxdir->next) {
- if (strcmp(comxdir->name, FILENAME_HARDWARE) == 0 ||
- strcmp(comxdir->name, FILENAME_PROTOCOL) == 0)
- comxdir->mode = S_IFREG | 0644;
- }
-
- return ret;
-}
-
-void comx_status(struct net_device *dev, int status)
-{
- struct comx_channel *ch = dev->priv;
-
-#if 0
- if(status & (PROTO_UP | PROTO_LOOP)) {
- clear_bit(0,&ch->reset_pending);
- }
-#endif
-
- printk(KERN_NOTICE "Interface %s: modem status %s, line protocol %s\n",
- dev->name, status & LINE_UP ? "UP" : "DOWN",
- status & PROTO_LOOP ? "LOOP" : status & PROTO_UP ?
- "UP" : "DOWN");
-
- ch->line_status = status;
-}
-
-static int comx_xmit(struct sk_buff *skb, struct net_device *dev)
-{
- struct comx_channel *ch = dev->priv;
- int rc;
-
- if (skb->len > dev->mtu + dev->hard_header_len) {
- printk(KERN_ERR "comx_xmit: %s: skb->len %d > dev->mtu %d\n", dev->name,
- (int)skb->len, dev->mtu);
- }
-
- if (ch->debug_flags & DEBUG_COMX_TX) {
- comx_debug_skb(dev, skb, "comx_xmit skb");
- }
-
- rc=ch->LINE_xmit(skb, dev);
-// if (!rc) dev_kfree_skb(skb);
-
- return rc;
-}
-
-static int comx_header(struct sk_buff *skb, struct net_device *dev,
- unsigned short type, void *daddr, void *saddr, unsigned len)
-{
- struct comx_channel *ch = dev->priv;
-
- if (ch->LINE_header) {
- return (ch->LINE_header(skb, dev, type, daddr, saddr, len));
- } else {
- return 0;
- }
-}
-
-static int comx_rebuild_header(struct sk_buff *skb)
-{
- struct net_device *dev = skb->dev;
- struct comx_channel *ch = dev->priv;
-
- if (ch->LINE_rebuild_header) {
- return(ch->LINE_rebuild_header(skb));
- } else {
- return 0;
- }
-}
-
-int comx_rx(struct net_device *dev, struct sk_buff *skb)
-{
- struct comx_channel *ch = dev->priv;
-
- if (ch->debug_flags & DEBUG_COMX_RX) {
- comx_debug_skb(dev, skb, "comx_rx skb");
- }
- if (skb) {
- netif_rx(skb);
- dev->last_rx = jiffies;
- }
- return 0;
-}
-
-static struct net_device_stats *comx_stats(struct net_device *dev)
-{
- struct comx_channel *ch = dev->priv;
-
- return ch->current_stats;
-}
-
-void comx_lineup_func(unsigned long d)
-{
- struct net_device *dev = (struct net_device *)d;
- struct comx_channel *ch = dev->priv;
-
- del_timer(&ch->lineup_timer);
- clear_bit(0, &ch->lineup_pending);
-
- if (ch->LINE_status) {
- ch->LINE_status(dev, ch->line_status |= LINE_UP);
- }
-}
-
-#define LOADAVG(avg, off) (int) \
- ((ch->avg_bytes[(ch->loadavg_counter - 1 + ch->loadavg_size * 2) \
- % ch->loadavg_size + off] - ch->avg_bytes[(ch->loadavg_counter - 1 \
- - ch->loadavg[avg] / ch->loadavg[0] + ch->loadavg_size * 2) \
- % ch->loadavg_size + off]) / ch->loadavg[avg] * 8)
-
-static int comx_statistics(struct net_device *dev, char *page)
-{
- struct comx_channel *ch = dev->priv;
- int len = 0;
- int tmp;
- int i = 0;
- char tmpstr[20];
- int tmpstrlen = 0;
-
- len += sprintf(page + len, "Interface administrative status is %s, "
- "modem status is %s, protocol is %s\n",
- dev->flags & IFF_UP ? "UP" : "DOWN",
- ch->line_status & LINE_UP ? "UP" : "DOWN",
- ch->line_status & PROTO_LOOP ? "LOOP" :
- ch->line_status & PROTO_UP ? "UP" : "DOWN");
- len += sprintf(page + len, "Modem status changes: %lu, Transmitter status "
- "is %s, tbusy: %d\n", ch->current_stats->tx_carrier_errors, ch->HW_txe ?
- ch->HW_txe(dev) ? "IDLE" : "BUSY" : "NOT READY", netif_running(dev));
- len += sprintf(page + len, "Interface load (input): %d / %d / %d bits/s (",
- LOADAVG(0,0), LOADAVG(1, 0), LOADAVG(2, 0));
- tmpstr[0] = 0;
- for (i=0; i != 3; i++) {
- char tf;
-
- tf = ch->loadavg[i] % 60 == 0 &&
- ch->loadavg[i] / 60 > 0 ? 'm' : 's';
- tmpstrlen += sprintf(tmpstr + tmpstrlen, "%d%c%s",
- ch->loadavg[i] / (tf == 'm' ? 60 : 1), tf,
- i == 2 ? ")\n" : "/");
- }
- len += sprintf(page + len,
- "%s (output): %d / %d / %d bits/s (%s", tmpstr,
- LOADAVG(0,ch->loadavg_size), LOADAVG(1, ch->loadavg_size),
- LOADAVG(2, ch->loadavg_size), tmpstr);
-
- len += sprintf(page + len, "Debug flags: ");
- tmp = len; i = 0;
- while (comx_debugflags[i].name) {
- if (ch->debug_flags & comx_debugflags[i].value)
- len += sprintf(page + len, "%s ",
- comx_debugflags[i].name);
- i++;
- }
- len += sprintf(page + len, "%s\n", tmp == len ? "none" : "");
-
- len += sprintf(page + len, "RX errors: len: %lu, overrun: %lu, crc: %lu, "
- "aborts: %lu\n buffer overrun: %lu, pbuffer overrun: %lu\n"
- "TX errors: underrun: %lu\n",
- ch->current_stats->rx_length_errors, ch->current_stats->rx_over_errors,
- ch->current_stats->rx_crc_errors, ch->current_stats->rx_frame_errors,
- ch->current_stats->rx_missed_errors, ch->current_stats->rx_fifo_errors,
- ch->current_stats->tx_fifo_errors);
-
- if (ch->LINE_statistics && (ch->init_status & LINE_OPEN)) {
- len += ch->LINE_statistics(dev, page + len);
- } else {
- len += sprintf(page+len, "Line status: driver not initialized\n");
- }
- if (ch->HW_statistics && (ch->init_status & HW_OPEN)) {
- len += ch->HW_statistics(dev, page + len);
- } else {
- len += sprintf(page+len, "Board status: driver not initialized\n");
- }
-
- return len;
-}
-
-static int comx_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
-{
- struct comx_channel *ch = dev->priv;
-
- if (ch->LINE_ioctl) {
- return(ch->LINE_ioctl(dev, ifr, cmd));
- }
- return -EINVAL;
-}
-
-static void comx_reset_dev(struct net_device *dev)
-{
- dev->open = comx_open;
- dev->stop = comx_close;
- dev->hard_start_xmit = comx_xmit;
- dev->hard_header = comx_header;
- dev->rebuild_header = comx_rebuild_header;
- dev->get_stats = comx_stats;
- dev->do_ioctl = comx_ioctl;
- dev->change_mtu = NULL;
- dev->tx_queue_len = 20;
- dev->flags = IFF_NOARP;
-}
-
-static int comx_init_dev(struct net_device *dev)
-{
- struct comx_channel *ch;
-
- if ((ch = kmalloc(sizeof(struct comx_channel), GFP_KERNEL)) == NULL) {
- return -ENOMEM;
- }
- memset(ch, 0, sizeof(struct comx_channel));
-
- ch->loadavg[0] = 5;
- ch->loadavg[1] = 300;
- ch->loadavg[2] = 900;
- ch->loadavg_size = ch->loadavg[2] / ch->loadavg[0] + 1;
- if ((ch->avg_bytes = kmalloc(ch->loadavg_size *
- sizeof(unsigned long) * 2, GFP_KERNEL)) == NULL) {
- kfree(ch);
- return -ENOMEM;
- }
-
- memset(ch->avg_bytes, 0, ch->loadavg_size * sizeof(unsigned long) * 2);
- ch->loadavg_counter = 0;
- ch->loadavg_timer.function = comx_loadavg_timerfun;
- ch->loadavg_timer.data = (unsigned long)dev;
- ch->loadavg_timer.expires = jiffies + HZ * ch->loadavg[0];
- add_timer(&ch->loadavg_timer);
-
- dev->priv = (void *)ch;
- ch->dev = dev;
- ch->line_status &= ~LINE_UP;
-
- ch->current_stats = &ch->stats;
-
- comx_reset_dev(dev);
- return 0;
-}
-
-static int comx_read_proc(char *page, char **start, off_t off, int count,
- int *eof, void *data)
-{
- struct proc_dir_entry *file = (struct proc_dir_entry *)data;
- struct net_device *dev = file->parent->data;
- struct comx_channel *ch = dev->priv;
- int len = 0;
-
- if (strcmp(file->name, FILENAME_STATUS) == 0) {
- len = comx_statistics(dev, page);
- } else if (strcmp(file->name, FILENAME_HARDWARE) == 0) {
- len = sprintf(page, "%s\n", ch->hardware ?
- ch->hardware->name : HWNAME_NONE);
- } else if (strcmp(file->name, FILENAME_PROTOCOL) == 0) {
- len = sprintf(page, "%s\n", ch->protocol ?
- ch->protocol->name : PROTONAME_NONE);
- } else if (strcmp(file->name, FILENAME_LINEUPDELAY) == 0) {
- len = sprintf(page, "%01d\n", ch->lineup_delay);
- }
-
- if (off >= len) {
- *eof = 1;
- return 0;
- }
-
- *start = page + off;
- if (count >= len - off) {
- *eof = 1;
- }
- return min_t(int, count, len - off);
-}
-
-
-static int comx_root_read_proc(char *page, char **start, off_t off, int count,
- int *eof, void *data)
-{
- struct proc_dir_entry *file = (struct proc_dir_entry *)data;
- struct comx_hardware *hw;
- struct comx_protocol *line;
-
- int len = 0;
-
- if (strcmp(file->name, FILENAME_HARDWARELIST) == 0) {
- for(hw=comx_channels;hw;hw=hw->next)
- len+=sprintf(page+len, "%s\n", hw->name);
- } else if (strcmp(file->name, FILENAME_PROTOCOLLIST) == 0) {
- for(line=comx_lines;line;line=line->next)
- len+=sprintf(page+len, "%s\n", line->name);
- }
-
- if (off >= len) {
- *eof = 1;
- return 0;
- }
-
- *start = page + off;
- if (count >= len - off) {
- *eof = 1;
- }
- return min_t(int, count, len - off);
-}
-
-
-
-static int comx_write_proc(struct file *file, const char *buffer, u_long count,
- void *data)
-{
- struct proc_dir_entry *entry = (struct proc_dir_entry *)data;
- struct net_device *dev = (struct net_device *)entry->parent->data;
- struct comx_channel *ch = dev->priv;
- char *page;
- struct comx_hardware *hw = comx_channels;
- struct comx_protocol *line = comx_lines;
- int ret=0;
-
- if (count > PAGE_SIZE) {
- printk(KERN_ERR "count is %lu > %d!!!\n", count, (int)PAGE_SIZE);
- return -ENOSPC;
- }
-
- if (!(page = (char *)__get_free_page(GFP_KERNEL))) return -ENOMEM;
-
- if(copy_from_user(page, buffer, count))
- {
- count = -EFAULT;
- goto out;
- }
-
- if (page[count-1] == '\n')
- page[count-1] = '\0';
- else if (count < PAGE_SIZE)
- page[count] = '\0';
- else if (page[count]) {
- count = -EINVAL;
- goto out;
- }
-
- if (strcmp(entry->name, FILENAME_DEBUG) == 0) {
- int i;
- int ret = 0;
-
- if ((i = simple_strtoul(page, NULL, 10)) != 0) {
- unsigned long flags;
-
- save_flags(flags); cli();
- if (ch->debug_area) kfree(ch->debug_area);
- if ((ch->debug_area = kmalloc(ch->debug_size = i,
- GFP_KERNEL)) == NULL) {
- ret = -ENOMEM;
- }
- ch->debug_start = ch->debug_end = 0;
- restore_flags(flags);
- free_page((unsigned long)page);
- return ret ? ret : count;
- }
-
- if (*page != '+' && *page != '-') {
- free_page((unsigned long)page);
- return -EINVAL;
- }
- while (comx_debugflags[i].value &&
- strncmp(comx_debugflags[i].name, page + 1,
- strlen(comx_debugflags[i].name))) {
- i++;
- }
-
- if (comx_debugflags[i].value == 0) {
- printk(KERN_ERR "Invalid debug option\n");
- free_page((unsigned long)page);
- return -EINVAL;
- }
- if (*page == '+') {
- ch->debug_flags |= comx_debugflags[i].value;
- } else {
- ch->debug_flags &= ~comx_debugflags[i].value;
- }
- } else if (strcmp(entry->name, FILENAME_HARDWARE) == 0) {
- if(strlen(page)>10) {
- free_page((unsigned long)page);
- return -EINVAL;
- }
- while (hw) {
- if (strcmp(hw->name, page) == 0) {
- break;
- } else {
- hw = hw->next;
- }
- }
-#ifdef CONFIG_KMOD
- if(!hw && comx_strcasecmp(HWNAME_NONE,page) != 0){
- request_module("comx-hw-%s",page);
- }
- hw=comx_channels;
- while (hw) {
- if (comx_strcasecmp(hw->name, page) == 0) {
- break;
- } else {
- hw = hw->next;
- }
- }
-#endif
-
- if (comx_strcasecmp(HWNAME_NONE, page) != 0 && !hw) {
- free_page((unsigned long)page);
- return -ENODEV;
- }
- if (ch->init_status & HW_OPEN) {
- free_page((unsigned long)page);
- return -EBUSY;
- }
- if (ch->hardware && ch->hardware->hw_exit &&
- (ret=ch->hardware->hw_exit(dev))) {
- free_page((unsigned long)page);
- return ret;
- }
- ch->hardware = hw;
- entry->size = strlen(page) + 1;
- if (hw && hw->hw_init) hw->hw_init(dev);
- } else if (strcmp(entry->name, FILENAME_PROTOCOL) == 0) {
- if(strlen(page)>10) {
- free_page((unsigned long)page);
- return -EINVAL;
- }
- while (line) {
- if (comx_strcasecmp(line->name, page) == 0) {
- break;
- } else {
- line = line->next;
- }
- }
-#ifdef CONFIG_KMOD
- if(!line && comx_strcasecmp(PROTONAME_NONE, page) != 0) {
- request_module("comx-proto-%s",page);
- }
- line=comx_lines;
- while (line) {
- if (comx_strcasecmp(line->name, page) == 0) {
- break;
- } else {
- line = line->next;
- }
- }
-#endif
-
- if (comx_strcasecmp(PROTONAME_NONE, page) != 0 && !line) {
- free_page((unsigned long)page);
- return -ENODEV;
- }
-
- if (ch->init_status & LINE_OPEN) {
- free_page((unsigned long)page);
- return -EBUSY;
- }
-
- if (ch->protocol && ch->protocol->line_exit &&
- (ret=ch->protocol->line_exit(dev))) {
- free_page((unsigned long)page);
- return ret;
- }
- ch->protocol = line;
- entry->size = strlen(page) + 1;
- comx_reset_dev(dev);
- if (line && line->line_init) line->line_init(dev);
- } else if (strcmp(entry->name, FILENAME_LINEUPDELAY) == 0) {
- int i;
-
- if ((i = simple_strtoul(page, NULL, 10)) != 0) {
- if (i >=0 && i < 10) {
- ch->lineup_delay = i;
- } else {
- printk(KERN_ERR "comx: invalid lineup_delay value\n");
- }
- }
- }
-out:
- free_page((unsigned long)page);
- return count;
-}
-
-static int comx_mkdir(struct inode *dir, struct dentry *dentry, int mode)
-{
- struct proc_dir_entry *new_dir, *debug_file;
- struct net_device *dev;
- struct comx_channel *ch;
- int ret = -EIO;
-
- if ((dev = kmalloc(sizeof(struct net_device), GFP_KERNEL)) == NULL) {
- return -ENOMEM;
- }
- memset(dev, 0, sizeof(struct net_device));
-
- lock_kernel();
- if ((new_dir = create_proc_entry(dentry->d_name.name, mode | S_IFDIR,
- comx_root_dir)) == NULL) {
- goto cleanup_dev;
- }
-
- new_dir->nlink = 2;
- new_dir->data = NULL; // ide jon majd a struct dev
-
- /* Ezek kellenek */
- if (!create_comx_proc_entry(FILENAME_HARDWARE, 0644,
- strlen(HWNAME_NONE) + 1, new_dir)) {
- goto cleanup_new_dir;
- }
- if (!create_comx_proc_entry(FILENAME_PROTOCOL, 0644,
- strlen(PROTONAME_NONE) + 1, new_dir)) {
- goto cleanup_filename_hardware;
- }
- if (!create_comx_proc_entry(FILENAME_STATUS, 0444, 0, new_dir)) {
- goto cleanup_filename_protocol;
- }
- if (!create_comx_proc_entry(FILENAME_LINEUPDELAY, 0644, 2, new_dir)) {
- goto cleanup_filename_status;
- }
-
- if ((debug_file = create_proc_entry(FILENAME_DEBUG,
- S_IFREG | 0644, new_dir)) == NULL) {
- goto cleanup_filename_lineupdelay;
- }
- debug_file->data = (void *)debug_file;
- debug_file->read_proc = NULL; // see below
- debug_file->write_proc = &comx_write_proc;
- debug_file->nlink = 1;
-
- strcpy(dev->name, (char *)new_dir->name);
- dev->init = comx_init_dev;
-
- if (register_netdevice(dev)) {
- goto cleanup_filename_debug;
- }
- ch = dev->priv;
- if((ch->if_ptr = (void *)kmalloc(sizeof(struct ppp_device),
- GFP_KERNEL)) == NULL) {
- goto cleanup_register;
- }
- memset(ch->if_ptr, 0, sizeof(struct ppp_device));
- ch->debug_file = debug_file;
- ch->procdir = new_dir;
- new_dir->data = dev;
-
- ch->debug_start = ch->debug_end = 0;
- if ((ch->debug_area = kmalloc(ch->debug_size = DEFAULT_DEBUG_SIZE,
- GFP_KERNEL)) == NULL) {
- ret = -ENOMEM;
- goto cleanup_if_ptr;
- }
-
- ch->lineup_delay = DEFAULT_LINEUP_DELAY;
-
- MOD_INC_USE_COUNT;
- unlock_kernel();
- return 0;
-cleanup_if_ptr:
- kfree(ch->if_ptr);
-cleanup_register:
- unregister_netdevice(dev);
-cleanup_filename_debug:
- remove_proc_entry(FILENAME_DEBUG, new_dir);
-cleanup_filename_lineupdelay:
- remove_proc_entry(FILENAME_LINEUPDELAY, new_dir);
-cleanup_filename_status:
- remove_proc_entry(FILENAME_STATUS, new_dir);
-cleanup_filename_protocol:
- remove_proc_entry(FILENAME_PROTOCOL, new_dir);
-cleanup_filename_hardware:
- remove_proc_entry(FILENAME_HARDWARE, new_dir);
-cleanup_new_dir:
- remove_proc_entry(dentry->d_name.name, comx_root_dir);
-cleanup_dev:
- kfree(dev);
- unlock_kernel();
- return ret;
-}
-
-static int comx_rmdir(struct inode *dir, struct dentry *dentry)
-{
- struct proc_dir_entry *entry = PDE(dentry->d_inode);
- struct net_device *dev;
- struct comx_channel *ch;
- int ret;
-
- lock_kernel();
- dev = entry->data;
- ch = dev->priv;
- if (dev->flags & IFF_UP) {
- printk(KERN_ERR "%s: down interface before removing it\n", dev->name);
- unlock_kernel();
- return -EBUSY;
- }
-
- if (ch->protocol && ch->protocol->line_exit &&
- (ret=ch->protocol->line_exit(dev))) {
- unlock_kernel();
- return ret;
- }
- if (ch->hardware && ch->hardware->hw_exit &&
- (ret=ch->hardware->hw_exit(dev))) {
- if(ch->protocol && ch->protocol->line_init) {
- ch->protocol->line_init(dev);
- }
- unlock_kernel();
- return ret;
- }
- ch->protocol = NULL;
- ch->hardware = NULL;
-
- del_timer(&ch->loadavg_timer);
- kfree(ch->avg_bytes);
-
- unregister_netdev(dev);
- if (ch->debug_area) {
- kfree(ch->debug_area);
- }
- if (dev->priv) {
- kfree(dev->priv);
- }
- free_netdev(dev);
-
- remove_proc_entry(FILENAME_DEBUG, entry);
- remove_proc_entry(FILENAME_LINEUPDELAY, entry);
- remove_proc_entry(FILENAME_STATUS, entry);
- remove_proc_entry(FILENAME_HARDWARE, entry);
- remove_proc_entry(FILENAME_PROTOCOL, entry);
- remove_proc_entry(dentry->d_name.name, comx_root_dir);
-
- MOD_DEC_USE_COUNT;
- unlock_kernel();
- return 0;
-}
-
-static struct dentry *comx_lookup(struct inode *dir, struct dentry *dentry, struct nameidata *nd)
-{
- struct proc_dir_entry *de;
- struct inode *inode = NULL;
-
- lock_kernel();
- if ((de = PDE(dir)) != NULL) {
- for (de = de->subdir ; de ; de = de->next) {
- if ((de->namelen == dentry->d_name.len) &&
- (memcmp(dentry->d_name.name, de->name,
- de->namelen) == 0)) {
- if ((inode = proc_get_inode(dir->i_sb,
- de->low_ino, de)) == NULL) {
- printk(KERN_ERR "COMX: lookup error\n");
- unlock_kernel();
- return ERR_PTR(-EINVAL);
- }
- break;
- }
- }
- }
- unlock_kernel();
- dentry->d_op = &comx_dentry_operations;
- d_add(dentry, inode);
- return NULL;
-}
-
-int comx_strcasecmp(const char *cs, const char *ct)
-{
- register signed char __res;
-
- while (1) {
- if ((__res = toupper(*cs) - toupper(*ct++)) != 0 || !*cs++) {
- break;
- }
- }
- return __res;
-}
-
-static int comx_delete_dentry(struct dentry *dentry)
-{
- return 1;
-}
-
-static struct proc_dir_entry *create_comx_proc_entry(char *name, int mode,
- int size, struct proc_dir_entry *dir)
-{
- struct proc_dir_entry *new_file;
-
- if ((new_file = create_proc_entry(name, S_IFREG | mode, dir)) != NULL) {
- new_file->data = (void *)new_file;
- new_file->read_proc = &comx_read_proc;
- new_file->write_proc = &comx_write_proc;
- new_file->size = size;
- new_file->nlink = 1;
- }
- return(new_file);
-}
-
-int comx_register_hardware(struct comx_hardware *comx_hw)
-{
- struct comx_hardware *hw = comx_channels;
-
- if (!hw) {
- comx_channels = comx_hw;
- } else {
- while (hw->next != NULL && strcmp(comx_hw->name, hw->name) != 0) {
- hw = hw->next;
- }
- if (strcmp(comx_hw->name, hw->name) == 0) {
- return -1;
- }
- hw->next = comx_hw;
- }
-
- printk(KERN_INFO "COMX: driver for hardware type %s, version %s\n", comx_hw->name, comx_hw->version);
- return 0;
-}
-
-int comx_unregister_hardware(char *name)
-{
- struct comx_hardware *hw = comx_channels;
-
- if (!hw) {
- return -1;
- }
-
- if (strcmp(hw->name, name) == 0) {
- comx_channels = comx_channels->next;
- return 0;
- }
-
- while (hw->next != NULL && strcmp(hw->next->name,name) != 0) {
- hw = hw->next;
- }
-
- if (hw->next != NULL && strcmp(hw->next->name, name) == 0) {
- hw->next = hw->next->next;
- return 0;
- }
- return -1;
-}
-
-int comx_register_protocol(struct comx_protocol *comx_line)
-{
- struct comx_protocol *pr = comx_lines;
-
- if (!pr) {
- comx_lines = comx_line;
- } else {
- while (pr->next != NULL && strcmp(comx_line->name, pr->name) !=0) {
- pr = pr->next;
- }
- if (strcmp(comx_line->name, pr->name) == 0) {
- return -1;
- }
- pr->next = comx_line;
- }
-
- printk(KERN_INFO "COMX: driver for protocol type %s, version %s\n", comx_line->name, comx_line->version);
- return 0;
-}
-
-int comx_unregister_protocol(char *name)
-{
- struct comx_protocol *pr = comx_lines;
-
- if (!pr) {
- return -1;
- }
-
- if (strcmp(pr->name, name) == 0) {
- comx_lines = comx_lines->next;
- return 0;
- }
-
- while (pr->next != NULL && strcmp(pr->next->name,name) != 0) {
- pr = pr->next;
- }
-
- if (pr->next != NULL && strcmp(pr->next->name, name) == 0) {
- pr->next = pr->next->next;
- return 0;
- }
- return -1;
-}
-
-static int __init comx_init(void)
-{
- struct proc_dir_entry *new_file;
-
- comx_root_dir = create_proc_entry("comx",
- S_IFDIR | S_IWUSR | S_IRUGO | S_IXUGO, &proc_root);
- if (!comx_root_dir)
- return -ENOMEM;
- comx_root_dir->proc_iops = &comx_root_inode_ops;
-
- if ((new_file = create_proc_entry(FILENAME_HARDWARELIST,
- S_IFREG | 0444, comx_root_dir)) == NULL) {
- return -ENOMEM;
- }
-
- new_file->data = new_file;
- new_file->read_proc = &comx_root_read_proc;
- new_file->write_proc = NULL;
- new_file->nlink = 1;
-
- if ((new_file = create_proc_entry(FILENAME_PROTOCOLLIST,
- S_IFREG | 0444, comx_root_dir)) == NULL) {
- return -ENOMEM;
- }
-
- new_file->data = new_file;
- new_file->read_proc = &comx_root_read_proc;
- new_file->write_proc = NULL;
- new_file->nlink = 1;
-
-
- printk(KERN_INFO "COMX: driver version %s (C) 1995-1999 ITConsult-Pro Co. <info@itc.hu>\n",
- VERSION);
- return 0;
-}
-
-static void __exit comx_exit(void)
-{
- remove_proc_entry(FILENAME_HARDWARELIST, comx_root_dir);
- remove_proc_entry(FILENAME_PROTOCOLLIST, comx_root_dir);
- remove_proc_entry(comx_root_dir->name, &proc_root);
-}
-
-module_init(comx_init);
-module_exit(comx_exit);
-
-EXPORT_SYMBOL(comx_register_hardware);
-EXPORT_SYMBOL(comx_unregister_hardware);
-EXPORT_SYMBOL(comx_register_protocol);
-EXPORT_SYMBOL(comx_unregister_protocol);
-EXPORT_SYMBOL(comx_debug_skb);
-EXPORT_SYMBOL(comx_debug_bytes);
-EXPORT_SYMBOL(comx_debug);
-EXPORT_SYMBOL(comx_lineup_func);
-EXPORT_SYMBOL(comx_status);
-EXPORT_SYMBOL(comx_rx);
-EXPORT_SYMBOL(comx_strcasecmp);
-EXPORT_SYMBOL(comx_root_dir);
+++ /dev/null
-/*
- * General definitions for the COMX driver
- *
- * Original authors: Arpad Bakay <bakay.arpad@synergon.hu>,
- * Peter Bajan <bajan.peter@synergon.hu>,
- * Previous maintainer: Tivadar Szemethy <tiv@itc.hu>
- * Currently maintained by: Gergely Madarasz <gorgo@itc.hu>
- *
- * Copyright (C) 1995-1999 ITConsult-Pro Co. <info@itc.hu>
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- *
- *
- * net_device_stats:
- * rx_length_errors rec_len < 4 || rec_len > 2000
- * rx_over_errors receive overrun (OVR)
- * rx_crc_errors rx crc error
- * rx_frame_errors aborts rec'd (ABO)
- * rx_fifo_errors status fifo overrun (PBUFOVR)
- * rx_missed_errors receive buffer overrun (BUFOVR)
- * tx_aborted_errors ?
- * tx_carrier_errors modem line status changes
- * tx_fifo_errors tx underrun (locomx)
- */
-#include <linux/config.h>
-
-struct comx_protocol {
- char *name;
- char *version;
- unsigned short encap_type;
- int (*line_init)(struct net_device *dev);
- int (*line_exit)(struct net_device *dev);
- struct comx_protocol *next;
- };
-
-struct comx_hardware {
- char *name;
- char *version;
- int (*hw_init)(struct net_device *dev);
- int (*hw_exit)(struct net_device *dev);
- int (*hw_dump)(struct net_device *dev);
- struct comx_hardware *next;
- };
-
-struct comx_channel {
- void *if_ptr; // General purpose pointer
- struct net_device *dev; // Where we belong to
- struct net_device *twin; // On dual-port cards
- struct proc_dir_entry *procdir; // the directory
-
- unsigned char init_status;
- unsigned char line_status;
-
- struct timer_list lineup_timer; // against line jitter
- long int lineup_pending;
- unsigned char lineup_delay;
-
-#if 0
- struct timer_list reset_timer; // for board resetting
- long reset_pending;
- int reset_timeout;
-#endif
-
- struct net_device_stats stats;
- struct net_device_stats *current_stats;
-#if 0
- unsigned long board_resets;
-#endif
- unsigned long *avg_bytes;
- int loadavg_counter, loadavg_size;
- int loadavg[3];
- struct timer_list loadavg_timer;
- int debug_flags;
- char *debug_area;
- int debug_start, debug_end, debug_size;
- struct proc_dir_entry *debug_file;
-#ifdef CONFIG_COMX_DEBUG_RAW
- char *raw;
- int raw_len;
-#endif
- // LINE specific
- struct comx_protocol *protocol;
- void (*LINE_rx)(struct net_device *dev, struct sk_buff *skb);
- int (*LINE_tx)(struct net_device *dev);
- void (*LINE_status)(struct net_device *dev, u_short status);
- int (*LINE_open)(struct net_device *dev);
- int (*LINE_close)(struct net_device *dev);
- int (*LINE_xmit)(struct sk_buff *skb, struct net_device *dev);
- int (*LINE_header)(struct sk_buff *skb, struct net_device *dev,
- u_short type,void *daddr, void *saddr,
- unsigned len);
- int (*LINE_rebuild_header)(struct sk_buff *skb);
- int (*LINE_statistics)(struct net_device *dev, char *page);
- int (*LINE_parameter_check)(struct net_device *dev);
- int (*LINE_ioctl)(struct net_device *dev, struct ifreq *ifr,
- int cmd);
- void (*LINE_mod_use)(int);
- void * LINE_privdata;
-
- // HW specific
-
- struct comx_hardware *hardware;
- void (*HW_board_on)(struct net_device *dev);
- void (*HW_board_off)(struct net_device *dev);
- struct net_device *(*HW_access_board)(struct net_device *dev);
- void (*HW_release_board)(struct net_device *dev, struct net_device *savep);
- int (*HW_txe)(struct net_device *dev);
- int (*HW_open)(struct net_device *dev);
- int (*HW_close)(struct net_device *dev);
- int (*HW_send_packet)(struct net_device *dev,struct sk_buff *skb);
- int (*HW_statistics)(struct net_device *dev, char *page);
-#if 0
- int (*HW_reset)(struct net_device *dev, char *page);
-#endif
- int (*HW_load_board)(struct net_device *dev);
- void (*HW_set_clock)(struct net_device *dev);
- void *HW_privdata;
- };
-
-struct comx_debugflags_struct {
- char *name;
- int value;
- };
-
-#define COMX_ROOT_DIR_NAME "comx"
-
-#define FILENAME_HARDWARE "boardtype"
-#define FILENAME_HARDWARELIST "boardtypes"
-#define FILENAME_PROTOCOL "protocol"
-#define FILENAME_PROTOCOLLIST "protocols"
-#define FILENAME_DEBUG "debug"
-#define FILENAME_CLOCK "clock"
-#define FILENAME_STATUS "status"
-#define FILENAME_IO "io"
-#define FILENAME_IRQ "irq"
-#define FILENAME_KEEPALIVE "keepalive"
-#define FILENAME_LINEUPDELAY "lineup_delay"
-#define FILENAME_CHANNEL "channel"
-#define FILENAME_FIRMWARE "firmware"
-#define FILENAME_MEMADDR "memaddr"
-#define FILENAME_TWIN "twin"
-#define FILENAME_T1 "t1"
-#define FILENAME_T2 "t2"
-#define FILENAME_N2 "n2"
-#define FILENAME_WINDOW "window"
-#define FILENAME_MODE "mode"
-#define FILENAME_DLCI "dlci"
-#define FILENAME_MASTER "master"
-#ifdef CONFIG_COMX_DEBUG_RAW
-#define FILENAME_RAW "raw"
-#endif
-
-#define PROTONAME_NONE "none"
-#define HWNAME_NONE "none"
-#define KEEPALIVE_OFF "off"
-
-#define FRAME_ACCEPTED 0 /* sending and xmitter busy */
-#define FRAME_DROPPED 1
-#define FRAME_ERROR 2 /* xmitter error */
-#define FRAME_QUEUED 3 /* sending but more can come */
-
-#define LINE_UP 1 /* Modem UP */
-#define PROTO_UP 2
-#define PROTO_LOOP 4
-
-#define HW_OPEN 1
-#define LINE_OPEN 2
-#define FW_LOADED 4
-#define IRQ_ALLOCATED 8
-
-#define DEBUG_COMX_RX 2
-#define DEBUG_COMX_TX 4
-#define DEBUG_HW_TX 16
-#define DEBUG_HW_RX 32
-#define DEBUG_HDLC_KEEPALIVE 64
-#define DEBUG_COMX_PPP 128
-#define DEBUG_COMX_LAPB 256
-#define DEBUG_COMX_DLCI 512
-
-#define DEBUG_PAGESIZE 3072
-#define DEFAULT_DEBUG_SIZE 4096
-#define DEFAULT_LINEUP_DELAY 1
-#define FILE_PAGESIZE 3072
-
-#ifndef COMX_PPP_MAJOR
-#define COMX_PPP_MAJOR 88
-#endif
-
-
-#define COMX_CHANNEL(dev) ((struct comx_channel*)dev->priv)
-
-#define TWIN(dev) (COMX_CHANNEL(dev)->twin)
-
-
-#ifndef byte
-typedef u8 byte;
-#endif
-#ifndef word
-typedef u16 word;
-#endif
-
-#ifndef SEEK_SET
-#define SEEK_SET 0
-#endif
-#ifndef SEEK_CUR
-#define SEEK_CUR 1
-#endif
-#ifndef SEEK_END
-#define SEEK_END 2
-#endif
-
-extern struct proc_dir_entry * comx_root_dir;
-
-extern int comx_register_hardware(struct comx_hardware *comx_hw);
-extern int comx_unregister_hardware(char *name);
-extern int comx_register_protocol(struct comx_protocol *comx_line);
-extern int comx_unregister_protocol(char *name);
-
-extern int comx_rx(struct net_device *dev, struct sk_buff *skb);
-extern void comx_status(struct net_device *dev, int status);
-extern void comx_lineup_func(unsigned long d);
-
-extern int comx_debug(struct net_device *dev, char *fmt, ...);
-extern int comx_debug_skb(struct net_device *dev, struct sk_buff *skb, char *msg);
-extern int comx_debug_bytes(struct net_device *dev, unsigned char *bytes, int len,
- char *msg);
-extern int comx_strcasecmp(const char *cs, const char *ct);
-
-extern struct inode_operations comx_normal_inode_ops;
+++ /dev/null
-/*
- * Defines for comxhw.c
- *
- * Original authors: Arpad Bakay <bakay.arpad@synergon.hu>,
- * Peter Bajan <bajan.peter@synergon.hu>,
- * Previous maintainer: Tivadar Szemethy <tiv@itc.hu>
- * Current maintainer: Gergely Madarasz <gorgo@itc.hu>
- *
- * Copyright (C) 1995-1999 ITConsult-Pro Co. <info@itc.hu>
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- *
- */
-
-#define LOCOMX_IO_EXTENT 8
-#define COMX_IO_EXTENT 4
-#define HICOMX_IO_EXTENT 16
-
-#define COMX_MAX_TX_SIZE 1600
-#define COMX_MAX_RX_SIZE 2048
-
-#define COMX_JAIL_OFFSET 0xffff
-#define COMX_JAIL_VALUE 0xfe
-#define COMX_MEMORY_SIZE 65536
-#define HICOMX_MEMORY_SIZE 16384
-#define COMX_MEM_MIN 0xa0000
-#define COMX_MEM_MAX 0xf0000
-
-#define COMX_DEFAULT_IO 0x360
-#define COMX_DEFAULT_IRQ 10
-#define COMX_DEFAULT_MEMADDR 0xd0000
-#define HICOMX_DEFAULT_IO 0x320
-#define HICOMX_DEFAULT_IRQ 10
-#define HICOMX_DEFAULT_MEMADDR 0xd0000
-#define LOCOMX_DEFAULT_IO 0x368
-#define LOCOMX_DEFAULT_IRQ 7
-
-#define MAX_CHANNELNO 2
-
-#define COMX_CHANNEL_OFFSET 0x2000
-
-#define COMX_ENABLE_BOARD_IT 0x40
-#define COMX_BOARD_RESET 0x20
-#define COMX_ENABLE_BOARD_MEM 0x10
-#define COMX_DISABLE_BOARD_MEM 0
-#define COMX_DISABLE_ALL 0x00
-
-#define HICOMX_DISABLE_ALL 0x00
-#define HICOMX_ENABLE_BOARD_MEM 0x02
-#define HICOMX_DISABLE_BOARD_MEM 0x0
-#define HICOMX_BOARD_RESET 0x01
-#define HICOMX_PRG_MEM 4
-#define HICOMX_DATA_MEM 0
-#define HICOMX_ID_BYTE 0x55
-
-#define CMX_ID_BYTE 0x31
-#define COMX_CLOCK_CONST 8000
-
-#define LINKUP_READY 3
-
-#define OFF_FW_L1_ID 0x01e /* ID bytes */
-#define OFF_FW_L2_ID 0x1006
-#define FW_L1_ID_1 0xab
-#define FW_L1_ID_2_COMX 0xc0
-#define FW_L1_ID_2_HICOMX 0xc1
-#define FW_L2_ID_1 0xab
-
-#define OFF_A_L2_CMD 0x130 /* command register for L2 */
-#define OFF_A_L2_CMDPAR 0x131 /* command parameter byte */
-#define OFF_A_L1_STATB 0x122 /* stat. block for L1 */
-#define OFF_A_L1_ABOREC 0x122 /* receive ABORT counter */
-#define OFF_A_L1_OVERRUN 0x123 /* receive overrun counter */
-#define OFF_A_L1_CRCREC 0x124 /* CRC error counter */
-#define OFF_A_L1_BUFFOVR 0x125 /* buffer overrun counter */
-#define OFF_A_L1_PBUFOVR 0x126 /* priority buffer overrun counter */
-#define OFF_A_L1_MODSTAT 0x127 /* current state of modem ctrl lines */
-#define OFF_A_L1_STATE 0x127 /* end of stat. block for L1 */
-#define OFF_A_L1_TXPC 0x128 /* Tx counter for the PC */
-#define OFF_A_L1_TXZ80 0x129 /* Tx counter for the Z80 */
-#define OFF_A_L1_RXPC 0x12a /* Rx counter for the PC */
-#define OFF_A_L1_RXZ80 0x12b /* Rx counter for the Z80 */
-#define OFF_A_L1_REPENA 0x12c /* IT rep disable */
-#define OFF_A_L1_CHNR 0x12d /* L1 channel logical number */
-#define OFF_A_L1_CLKINI 0x12e /* Timer Const */
-#define OFF_A_L2_LINKUP 0x132 /* Linkup byte */
-#define OFF_A_L2_DAV 0x134 /* Rx DAV */
-#define OFF_A_L2_RxBUFP 0x136 /* Rx buff relative to membase */
-#define OFF_A_L2_TxEMPTY 0x138 /* Tx Empty */
-#define OFF_A_L2_TxBUFP 0x13a /* Tx Buf */
-#define OFF_A_L2_NBUFFS 0x144 /* Number of buffers to fetch */
-
-#define OFF_A_L2_SABMREC 0x164 /* LAPB no. of SABMs received */
-#define OFF_A_L2_SABMSENT 0x165 /* LAPB no. of SABMs sent */
-#define OFF_A_L2_REJREC 0x166 /* LAPB no. of REJs received */
-#define OFF_A_L2_REJSENT 0x167 /* LAPB no. of REJs sent */
-#define OFF_A_L2_FRMRREC 0x168 /* LAPB no. of FRMRs received */
-#define OFF_A_L2_FRMRSENT 0x169 /* LAPB no. of FRMRs sent */
-#define OFF_A_L2_PROTERR 0x16A /* LAPB no. of protocol errors rec'd */
-#define OFF_A_L2_LONGREC 0x16B /* LAPB no. of long frames */
-#define OFF_A_L2_INVNR 0x16C /* LAPB no. of invalid N(R)s rec'd */
-#define OFF_A_L2_UNDEFFR 0x16D /* LAPB no. of invalid frames */
-
-#define OFF_A_L2_T1 0x174 /* T1 timer */
-#define OFF_A_L2_ADDR 0x176 /* DCE = 1, DTE = 3 */
-
-#define COMX_CMD_INIT 1
-#define COMX_CMD_EXIT 2
-#define COMX_CMD_OPEN 16
-#define COMX_CMD_CLOSE 17
-
+++ /dev/null
-/*
- * Defines for comx-hw-slicecom.c - FALC-LH specific
- *
- * Author: Bartok Istvan <bartoki@itc.hu>
- * Last modified: Mon Feb 7 20:00:38 CET 2000
- *
- * :set tabstop=6
- */
-
-/*
- * Control register offsets on the LBI (page 90)
- * use it like:
- * lbi[ MODE ] = 0x34;
- */
-
-#define MODE 0x03
-#define IPC 0x08
-#define IMR0 0x14 /* Interrupt Mask Register 0 */
-#define IMR1 0x15
-#define IMR2 0x16
-#define IMR3 0x17
-#define IMR4 0x18
-#define IMR5 0x19
-#define FMR0 0x1a /* Framer Mode Register 0 */
-#define FMR1 0x1b
-#define FMR2 0x1c
-#define XSW 0x1e
-#define XSP 0x1f
-#define XC0 0x20
-#define XC1 0x21
-#define RC0 0x22
-#define RC1 0x23
-#define XPM0 0x24
-#define XPM1 0x25
-#define XPM2 0x26
-#define TSWM 0x27
-#define IDLE 0x29 /* Idle Code */
-#define LIM0 0x34
-#define LIM1 0x35
-#define PCD 0x36
-#define PCR 0x37
-#define LIM2 0x38
-
-/*
- * Status registers on the LBI (page 134)
- * these are read-only, use it like:
- * if( lbi[ FRS0 ] ) ...
- */
-
-#define FRS0 0x4c /* Framer Receive Status register 0 */
-#define FRS1 0x4d /* Framer Receive Status register 1 */
-#define FECL 0x50 /* Framing Error Counter low byte */ /* Counts FAS word receive errors */
-#define FECH 0x51 /* high byte */
-#define CVCL 0x52 /* Code Violation Counter low byte */ /* Counts bipolar and HDB3 code violations */
-#define CVCH 0x53 /* high byte */
-#define CEC1L 0x54 /* CRC4 Error Counter 1 low byte */ /* Counts CRC4 errors in the incoming stream */
-#define CEC1H 0x55 /* high byte */
-#define EBCL 0x56 /* E Bit error Counter low byte */ /* E-bits: the remote end sends them, when */
-#define EBCH 0x57 /* high byte */ /* it detected a CRC4-error */
-#define ISR0 0x68 /* Interrupt Status Register 0 */
-#define ISR1 0x69 /* Interrupt Status Register 1 */
-#define ISR2 0x6a /* Interrupt Status Register 2 */
-#define ISR3 0x6b /* Interrupt Status Register 3 */
-#define ISR5 0x6c /* Interrupt Status Register 5 */
-#define GIS 0x6e /* Global Interrupt Status Register */
-#define VSTR 0x6f /* version information */
-
-/*
- * Bit fields
- */
-
-#define FRS0_LOS (1 << 7)
-#define FRS0_AIS (1 << 6)
-#define FRS0_LFA (1 << 5)
-#define FRS0_RRA (1 << 4)
-#define FRS0_AUXP (1 << 3)
-#define FRS0_NMF (1 << 2)
-#define FRS0_LMFA (1 << 1)
-
-#define FRS1_XLS (1 << 1)
-#define FRS1_XLO (1)
-
-#define ISR2_FAR (1 << 7)
-#define ISR2_LFA (1 << 6)
-#define ISR2_MFAR (1 << 5)
-#define ISR2_T400MS (1 << 4)
-#define ISR2_AIS (1 << 3)
-#define ISR2_LOS (1 << 2)
-#define ISR2_RAR (1 << 1)
-#define ISR2_RA (1)
-
-#define ISR3_ES (1 << 7)
-#define ISR3_SEC (1 << 6)
-#define ISR3_LMFA16 (1 << 5)
-#define ISR3_AIS16 (1 << 4)
-#define ISR3_RA16 (1 << 3)
-#define ISR3_API (1 << 2)
-#define ISR3_RSN (1 << 1)
-#define ISR3_RSP (1)
-
-#define ISR5_XSP (1 << 7)
-#define ISR5_XSN (1 << 6)
+++ /dev/null
-#define HSCX_MTU 1600
-
-#define HSCX_ISTA 0x00
-#define HSCX_MASK 0x00
-#define HSCX_STAR 0x01
-#define HSCX_CMDR 0x01
-#define HSCX_MODE 0x02
-#define HSCX_TIMR 0x03
-#define HSCX_EXIR 0x04
-#define HSCX_XAD1 0x04
-#define HSCX_RBCL 0x05
-#define HSCX_SAD2 0x05
-#define HSCX_RAH1 0x06
-#define HSCX_RSTA 0x07
-#define HSCX_RAH2 0x07
-#define HSCX_RAL1 0x08
-#define HSCX_RCHR 0x09
-#define HSCX_RAL2 0x09
-#define HSCX_XBCL 0x0a
-#define HSCX_BGR 0x0b
-#define HSCX_CCR2 0x0c
-#define HSCX_RBCH 0x0d
-#define HSCX_XBCH 0x0d
-#define HSCX_VSTR 0x0e
-#define HSCX_RLCR 0x0e
-#define HSCX_CCR1 0x0f
-#define HSCX_FIFO 0x1e
-
-#define HSCX_HSCX_CHOFFS 0x400
-#define HSCX_SEROFFS 0x1000
-
-#define HSCX_RME 0x80
-#define HSCX_RPF 0x40
-#define HSCX_RSC 0x20
-#define HSCX_XPR 0x10
-#define HSCX_TIN 0x08
-#define HSCX_ICA 0x04
-#define HSCX_EXA 0x02
-#define HSCX_EXB 0x01
-
-#define HSCX_XMR 0x80
-#define HSCX_XDU 0x40
-#define HSCX_EXE 0x40
-#define HSCX_PCE 0x20
-#define HSCX_RFO 0x10
-#define HSCX_CSC 0x08
-#define HSCX_RFS 0x04
-
-#define HSCX_XDOV 0x80
-#define HSCX_XFW 0x40
-#define HSCX_XRNR 0x20
-#define HSCX_RRNR 0x10
-#define HSCX_RLI 0x08
-#define HSCX_CEC 0x04
-#define HSCX_CTS 0x02
-#define HSCX_WFA 0x01
-
-#define HSCX_RMC 0x80
-#define HSCX_RHR 0x40
-#define HSCX_RNR 0x20
-#define HSCX_XREP 0x20
-#define HSCX_STI 0x10
-#define HSCX_XTF 0x08
-#define HSCX_XIF 0x04
-#define HSCX_XME 0x02
-#define HSCX_XRES 0x01
-
-#define HSCX_AUTO 0x00
-#define HSCX_NONAUTO 0x40
-#define HSCX_TRANS 0x80
-#define HSCX_XTRANS 0xc0
-#define HSCX_ADM16 0x20
-#define HSCX_ADM8 0x00
-#define HSCX_TMD_EXT 0x00
-#define HSCX_TMD_INT 0x10
-#define HSCX_RAC 0x08
-#define HSCX_RTS 0x04
-#define HSCX_TLP 0x01
-
-#define HSCX_VFR 0x80
-#define HSCX_RDO 0x40
-#define HSCX_CRC 0x20
-#define HSCX_RAB 0x10
-
-#define HSCX_CIE 0x04
-#define HSCX_RIE 0x02
-
-#define HSCX_DMA 0x80
-#define HSCX_NRM 0x40
-#define HSCX_CAS 0x20
-#define HSCX_XC 0x10
-
-#define HSCX_OV 0x10
-
-#define HSCX_CD 0x80
-
-#define HSCX_RC 0x80
-
-#define HSCX_PU 0x80
-#define HSCX_NRZ 0x00
-#define HSCX_NRZI 0x40
-#define HSCX_ODS 0x10
-#define HSCX_ITF 0x08
+++ /dev/null
-/*
- * Defines for the mixcom board
- *
- * Author: Gergely Madarasz <gorgo@itc.hu>
- *
- * Copyright (C) 1999 ITConsult-Pro Co. <info@itc.hu>
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- *
- */
-
-#define MIXCOM_IO_EXTENT 0x20
-
-#define MIXCOM_DEFAULT_IO 0x180
-#define MIXCOM_DEFAULT_IRQ 5
-
-#define MIXCOM_ID 0x11
-#define MIXCOM_SERIAL_OFFSET 0x1000
-#define MIXCOM_CHANNEL_OFFSET 0x400
-#define MIXCOM_IT_OFFSET 0xc14
-#define MIXCOM_STATUS_OFFSET 0xc14
-#define MIXCOM_ID_OFFSET 0xc10
-#define MIXCOM_ON 0x1
-#define MIXCOM_OFF 0x0
-
-/* Status register bits */
-
-#define MIXCOM_CTSB 0x1
-#define MIXCOM_CTSA 0x2
-#define MIXCOM_CHANNELNO 0x20
-#define MIXCOM_POWERFAIL 0x40
-#define MIXCOM_BOOT 0x80
+++ /dev/null
-/*
- * Defines for comx-hw-slicecom.c - MUNICH32X specific
- *
- * Author: Bartok Istvan <bartoki@itc.hu>
- * Last modified: Tue Jan 11 14:27:36 CET 2000
- *
- * :set tabstop=6
- */
-
-#define TXBUFFER_SIZE 1536 /* Max mennyit tud a kartya hardver atvenni */
-#define RXBUFFER_SIZE (TXBUFFER_SIZE+4) /* For Rx reasons it must be a multiple of 4, and =>4 (page 265) */
- /* +4 .. see page 265, bit FE */
- /* TOD: a MODE1-be nem is ezt teszem, hanem a TXBUFFER-t, lehet hogy nem is kell? */
-
-//#define PCI_VENDOR_ID_SIEMENS 0x110a
-#define PCI_DEVICE_ID_SIEMENS_MUNICH32X 0x2101
-
-/*
- * PCI config space registers (page 120)
- */
-
-#define MUNICH_PCI_PCIRES 0x4c /* 0xe0000 resets the chip */
-
-
-/*
- * MUNICH slave register offsets relative to base_address[0] (PCI BAR1) (page 181):
- * offsets are in bytes, registers are u32's, so we need a >>2 for indexing
- * the int[] by byte offsets. Use it like:
- *
- * bar1[ STAT ] = ~0L; or
- * x = bar1[ STAT ];
- */
-
-#define CONF (0x00 >> 2)
-#define CMD (0x04 >> 2)
-#define STAT (0x08 >> 2)
-#define STACK (0x08 >> 2)
-#define IMASK (0x0c >> 2)
-#define PIQBA (0x14 >> 2)
-#define PIQL (0x18 >> 2)
-#define MODE1 (0x20 >> 2)
-#define MODE2 (0x24 >> 2)
-#define CCBA (0x28 >> 2)
-#define TXPOLL (0x2c >> 2)
-#define TIQBA (0x30 >> 2)
-#define TIQL (0x34 >> 2)
-#define RIQBA (0x38 >> 2)
-#define RIQL (0x3c >> 2)
-#define LCONF (0x40 >> 2) /* LBI Configuration Register */
-#define LCCBA (0x44 >> 2) /* LBI Configuration Control Block */ /* DE: lehet hogy nem is kell? */
-#define LTIQBA (0x50 >> 2) /* DE: lehet hogy nem is kell? page 210: LBI DMA Controller intq - nem hasznalunk DMA-t.. */
-#define LTIQL (0x54 >> 2) /* DE: lehet hogy nem is kell? */
-#define LRIQBA (0x58 >> 2) /* DE: lehet hogy nem is kell? */
-#define LRIQL (0x5c >> 2) /* DE: lehet hogy nem is kell? */
-#define LREG0 (0x60 >> 2) /* LBI Indirect External Configuration register 0 */
-#define LREG1 (0x64 >> 2)
-#define LREG2 (0x68 >> 2)
-#define LREG3 (0x6c >> 2)
-#define LREG4 (0x70 >> 2)
-#define LREG5 (0x74 >> 2)
-#define LREG6 (0x78 >> 2) /* LBI Indirect External Configuration register 6 */
-#define LSTAT (0x7c >> 2) /* LBI Status Register */
-#define GPDIR (0x80 >> 2) /* General Purpose Bus DIRection - 0..input, 1..output */
-#define GPDATA (0x84 >> 2) /* General Purpose Bus DATA */
-
-
-/*
- * MUNICH commands: (they go into register CMD)
- */
-
-#define CMD_ARPCM 0x01 /* Action Request Serial PCM Core */
-#define CMD_ARLBI 0x02 /* Action Request LBI */
-
-
-/*
- * MUNICH event bits in the STAT, STACK, IMASK registers (page 188,189)
- */
-
-#define STAT_PTI (1 << 15)
-#define STAT_PRI (1 << 14)
-#define STAT_LTI (1 << 13)
-#define STAT_LRI (1 << 12)
-#define STAT_IOMI (1 << 11)
-#define STAT_SSCI (1 << 10)
-#define STAT_LBII (1 << 9)
-#define STAT_MBI (1 << 8)
-
-#define STAT_TI (1 << 6)
-#define STAT_TSPA (1 << 5)
-#define STAT_RSPA (1 << 4)
-#define STAT_LBIF (1 << 3)
-#define STAT_LBIA (1 << 2)
-#define STAT_PCMF (1 << 1)
-#define STAT_PCMA (1)
-
-/*
- * We do not handle these (and do not touch their STAT bits) in the interrupt loop
- */
-
-#define STAT_NOT_HANDLED_BY_INTERRUPT (STAT_PCMF | STAT_PCMA)
-
-
-/*
- * MUNICH MODE1/MODE2 slave register fields (page 193,196)
- * these are not all masks, MODE1_XX_YY are my magic values!
- */
-
-#define MODE1_PCM_E1 (1 << 31) /* E1, 2.048 Mbit/sec */
-#define MODE1_TBS_4 (1 << 24) /* TBS = 4 .. no Tx bit shift */
-#define MODE1_RBS_4 (1 << 18) /* RBS = 4 .. no Rx bit shift */
-#define MODE1_REN (1 << 15) /* Rx Enable */
-#define MODE1_MFL_MY TXBUFFER_SIZE /* Maximum Frame Length */
-#define MODE1_MAGIC (MODE1_PCM_E1 | MODE1_TBS_4 | MODE1_RBS_4 | MODE1_REN | MODE1_MFL_MY)
-
-#define MODE2_HPOLL (1 << 8) /* Hold Poll */
-#define MODE2_SPOLL (1 << 7) /* Slow Poll */
-#define MODE2_TSF (1) /* real magic - discovered by probing :) */
-// #define MODE2_MAGIC (MODE2_TSF)
-#define MODE2_MAGIC (MODE2_SPOLL | MODE2_TSF)
-
-
-/*
- * LCONF bits (page 205)
- * these are not all masks, LCONF_XX_YY are my magic values!
- */
-
-#define LCONF_IPA (1 << 31) /* Interrupt Pass. Use 1 for FALC54 */
-#define LCONF_DCA (1 << 30) /* Disregard the int's for Channel A - DMSM does not try to handle them */
-#define LCONF_DCB (1 << 29) /* Disregard the int's for Channel B */
-#define LCONF_EBCRES (1 << 22) /* Reset LBI External Bus Controller, 0..reset, 1..normal operation */
-#define LCONF_LBIRES (1 << 21) /* Reset LBI DMSM, 0..reset, 1..normal operation */
-#define LCONF_BTYP_16DEMUX (1 << 7) /* 16-bit demultiplexed bus */
-#define LCONF_ABM (1 << 4) /* Arbitration Master */
-
-/* writing LCONF_MAGIC1 followed by a LCONF_MAGIC2 into LCONF resets the EBC and DMSM: */
-
-#define LCONF_MAGIC1 (LCONF_BTYP_16DEMUX | LCONF_ABM | LCONF_IPA | LCONF_DCA | LCONF_DCB)
-#define LCONF_MAGIC2 (LCONF_MAGIC1 | LCONF_EBCRES | LCONF_LBIRES)
-
-
-/*
- * LREGx magic values if a FALC54 is on the LBI (page 217)
- */
-
-#define LREG0_MAGIC 0x00000264
-#define LREG1_MAGIC 0x6e6a6b66
-#define LREG2_MAGIC 0x00000264
-#define LREG3_MAGIC 0x6e686966
-#define LREG4_MAGIC 0x00000000
-#define LREG5_MAGIC ( (7<<27) | (3<<24) | (1<<21) | (7<<3) | (2<<9) )
-
-
-/*
- * PCM Action Specification fields (munich_ccb_t.action_spec)
- */
-
-#define CCB_ACTIONSPEC_IN (1 << 15) /* init */
-#define CCB_ACTIONSPEC_ICO (1 << 14) /* init only this channel */
-#define CCB_ACTIONSPEC_RES (1 << 6) /* reset all channels */
-#define CCB_ACTIONSPEC_LOC (1 << 5)
-#define CCB_ACTIONSPEC_LOOP (1 << 4)
-#define CCB_ACTIONSPEC_LOOPI (1 << 3)
-#define CCB_ACTIONSPEC_IA (1 << 2)
-
-
-/*
- * Interrupt Information bits in the TIQ, RIQ
- */
-
-#define PCM_INT_HI (1 << 12)
-#define PCM_INT_FI (1 << 11)
-#define PCM_INT_IFC (1 << 10)
-#define PCM_INT_SF (1 << 9)
-#define PCM_INT_ERR (1 << 8)
-#define PCM_INT_FO (1 << 7)
-#define PCM_INT_FE2 (1 << 6)
-
-#define PCM_INT_CHANNEL( info ) (info & 0x1F)
-
-
-/*
- * Rx status info in the rx_desc_t.status
- */
-
-#define RX_STATUS_SF (1 << 6)
-#define RX_STATUS_LOSS (1 << 5)
-#define RX_STATUS_CRCO (1 << 4)
-#define RX_STATUS_NOB (1 << 3)
-#define RX_STATUS_LFD (1 << 2)
-#define RX_STATUS_RA (1 << 1)
-#define RX_STATUS_ROF 1
+++ /dev/null
-static u8 firmware[]={
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-0x01,0x08,0x23,0xC2,0xFF,0xF9,0x01,0x0C,0x23,0xFC,0x00,0x00,0x01,0x03,0xFF,0xF9,
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-0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00
-};
+++ /dev/null
-/*======================================================================
-
- Device driver for the PCMCIA control functionality of StrongARM
- SA-1100 microprocessors.
-
- The contents of this file are subject to the Mozilla Public
- License Version 1.1 (the "License"); you may not use this file
- except in compliance with the License. You may obtain a copy of
- the License at http://www.mozilla.org/MPL/
-
- Software distributed under the License is distributed on an "AS
- IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
- implied. See the License for the specific language governing
- rights and limitations under the License.
-
- The initial developer of the original code is John G. Dorsey
- <john+@cs.cmu.edu>. Portions created by John G. Dorsey are
- Copyright (C) 1999 John G. Dorsey. All Rights Reserved.
-
- Alternatively, the contents of this file may be used under the
- terms of the GNU Public License version 2 (the "GPL"), in which
- case the provisions of the GPL are applicable instead of the
- above. If you wish to allow the use of your version of this file
- only under the terms of the GPL and not to allow others to use
- your version of this file under the MPL, indicate your decision
- by deleting the provisions above and replace them with the notice
- and other provisions required by the GPL. If you do not delete
- the provisions above, a recipient may use your version of this
- file under either the MPL or the GPL.
-
-======================================================================*/
-
-#if !defined(_PCMCIA_SA1100_H)
-# define _PCMCIA_SA1100_H
-
-#include <pcmcia/cs_types.h>
-#include <pcmcia/ss.h>
-#include <pcmcia/bulkmem.h>
-#include <pcmcia/cistpl.h>
-#include "cs_internal.h"
-#include "sa1100_generic.h"
-
-/* MECR: Expansion Memory Configuration Register
- * (SA-1100 Developers Manual, p.10-13; SA-1110 Developers Manual, p.10-24)
- *
- * MECR layout is:
- *
- * FAST1 BSM1<4:0> BSA1<4:0> BSIO1<4:0> FAST0 BSM0<4:0> BSA0<4:0> BSIO0<4:0>
- *
- * (This layout is actually true only for the SA-1110; the FASTn bits are
- * reserved on the SA-1100.)
- */
-
-#define MECR_SOCKET_0_SHIFT (0)
-#define MECR_SOCKET_1_SHIFT (16)
-
-#define MECR_BS_MASK (0x1f)
-#define MECR_FAST_MODE_MASK (0x01)
-
-#define MECR_BSIO_SHIFT (0)
-#define MECR_BSA_SHIFT (5)
-#define MECR_BSM_SHIFT (10)
-#define MECR_FAST_SHIFT (15)
-
-#define MECR_SET(mecr, sock, shift, mask, bs) \
-((mecr)=((mecr)&~(((mask)<<(shift))<<\
- ((sock)==0?MECR_SOCKET_0_SHIFT:MECR_SOCKET_1_SHIFT)))|\
- (((bs)<<(shift))<<((sock)==0?MECR_SOCKET_0_SHIFT:MECR_SOCKET_1_SHIFT)))
-
-#define MECR_GET(mecr, sock, shift, mask) \
-((((mecr)>>(((sock)==0)?MECR_SOCKET_0_SHIFT:MECR_SOCKET_1_SHIFT))>>\
- (shift))&(mask))
-
-#define MECR_BSIO_SET(mecr, sock, bs) \
-MECR_SET((mecr), (sock), MECR_BSIO_SHIFT, MECR_BS_MASK, (bs))
-
-#define MECR_BSIO_GET(mecr, sock) \
-MECR_GET((mecr), (sock), MECR_BSIO_SHIFT, MECR_BS_MASK)
-
-#define MECR_BSA_SET(mecr, sock, bs) \
-MECR_SET((mecr), (sock), MECR_BSA_SHIFT, MECR_BS_MASK, (bs))
-
-#define MECR_BSA_GET(mecr, sock) \
-MECR_GET((mecr), (sock), MECR_BSA_SHIFT, MECR_BS_MASK)
-
-#define MECR_BSM_SET(mecr, sock, bs) \
-MECR_SET((mecr), (sock), MECR_BSM_SHIFT, MECR_BS_MASK, (bs))
-
-#define MECR_BSM_GET(mecr, sock) \
-MECR_GET((mecr), (sock), MECR_BSM_SHIFT, MECR_BS_MASK)
-
-#define MECR_FAST_SET(mecr, sock, fast) \
-MECR_SET((mecr), (sock), MECR_FAST_SHIFT, MECR_FAST_MODE_MASK, (fast))
-
-#define MECR_FAST_GET(mecr, sock) \
-MECR_GET((mecr), (sock), MECR_FAST_SHIFT, MECR_FAST_MODE_MASK)
-
-
-/* This function implements the BS value calculation for setting the MECR
- * using integer arithmetic:
- */
-static inline unsigned int sa1100_pcmcia_mecr_bs(unsigned int pcmcia_cycle_ns,
- unsigned int cpu_clock_khz){
- unsigned int t = ((pcmcia_cycle_ns * cpu_clock_khz) / 6) - 1000000;
- return (t / 1000000) + (((t % 1000000) == 0) ? 0 : 1);
-}
-
-/* This function returns the (approxmiate) command assertion period, in
- * nanoseconds, for a given CPU clock frequency and MECR BS value:
- */
-static inline unsigned int sa1100_pcmcia_cmd_time(unsigned int cpu_clock_khz,
- unsigned int pcmcia_mecr_bs){
- return (((10000000 * 2) / cpu_clock_khz) * (3 * (pcmcia_mecr_bs + 1))) / 10;
-}
-
-
-/* SA-1100 PCMCIA Memory and I/O timing
- * ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
- * The SA-1110 Developer's Manual, section 10.2.5, says the following:
- *
- * "To calculate the recommended BS_xx value for each address space:
- * divide the command width time (the greater of twIOWR and twIORD,
- * or the greater of twWE and twOE) by processor cycle time; divide
- * by 2; divide again by 3 (number of BCLK's per command assertion);
- * round up to the next whole number; and subtract 1."
- *
- * The PC Card Standard, Release 7, section 4.13.4, says that twIORD
- * has a minimum value of 165ns. Section 4.13.5 says that twIOWR has
- * a minimum value of 165ns, as well. Section 4.7.2 (describing
- * common and attribute memory write timing) says that twWE has a
- * minimum value of 150ns for a 250ns cycle time (for 5V operation;
- * see section 4.7.4), or 300ns for a 600ns cycle time (for 3.3V
- * operation, also section 4.7.4). Section 4.7.3 says that taOE
- * has a maximum value of 150ns for a 300ns cycle time (for 5V
- * operation), or 300ns for a 600ns cycle time (for 3.3V operation).
- *
- * When configuring memory maps, Card Services appears to adopt the policy
- * that a memory access time of "0" means "use the default." The default
- * PCMCIA I/O command width time is 165ns. The default PCMCIA 5V attribute
- * and memory command width time is 150ns; the PCMCIA 3.3V attribute and
- * memory command width time is 300ns.
- */
-#define SA1100_PCMCIA_IO_ACCESS (165)
-#define SA1100_PCMCIA_5V_MEM_ACCESS (150)
-#define SA1100_PCMCIA_3V_MEM_ACCESS (300)
-
-
-/* The socket driver actually works nicely in interrupt-driven form,
- * so the (relatively infrequent) polling is "just to be sure."
- */
-#define SA1100_PCMCIA_POLL_PERIOD (2*HZ)
-
-struct pcmcia_low_level;
-
-/* I/O pins replacing memory pins
- * (PCMCIA System Architecture, 2nd ed., by Don Anderson, p.75)
- *
- * These signals change meaning when going from memory-only to
- * memory-or-I/O interface:
- */
-#define iostschg bvd1
-#define iospkr bvd2
-
-#endif /* !defined(_PCMCIA_SA1100_H) */
+++ /dev/null
-/*======================================================================
-
- Device driver for the PCMCIA control functionality of StrongARM
- SA-1100 microprocessors.
-
- The contents of this file are subject to the Mozilla Public
- License Version 1.1 (the "License"); you may not use this file
- except in compliance with the License. You may obtain a copy of
- the License at http://www.mozilla.org/MPL/
-
- Software distributed under the License is distributed on an "AS
- IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
- implied. See the License for the specific language governing
- rights and limitations under the License.
-
- The initial developer of the original code is John G. Dorsey
- <john+@cs.cmu.edu>. Portions created by John G. Dorsey are
- Copyright (C) 1999 John G. Dorsey. All Rights Reserved.
-
- Alternatively, the contents of this file may be used under the
- terms of the GNU Public License version 2 (the "GPL"), in which
- case the provisions of the GPL are applicable instead of the
- above. If you wish to allow the use of your version of this file
- only under the terms of the GPL and not to allow others to use
- your version of this file under the MPL, indicate your decision
- by deleting the provisions above and replace them with the notice
- and other provisions required by the GPL. If you do not delete
- the provisions above, a recipient may use your version of this
- file under either the MPL or the GPL.
-
-======================================================================*/
-/*
- * Please see linux/Documentation/arm/SA1100/PCMCIA for more information
- * on the low-level kernel interface.
- */
-
-#include <linux/module.h>
-#include <linux/moduleparam.h>
-#include <linux/init.h>
-#include <linux/config.h>
-#include <linux/cpufreq.h>
-#include <linux/ioport.h>
-#include <linux/kernel.h>
-#include <linux/timer.h>
-#include <linux/mm.h>
-#include <linux/notifier.h>
-#include <linux/interrupt.h>
-#include <linux/spinlock.h>
-
-#include <asm/hardware.h>
-#include <asm/io.h>
-#include <asm/irq.h>
-#include <asm/system.h>
-
-#include "sa11xx_core.h"
-#include "sa1100.h"
-
-#ifdef DEBUG
-static int pc_debug;
-
-module_param(pc_debug, int, 0644);
-
-#define debug(skt, lvl, fmt, arg...) do { \
- if (pc_debug > (lvl)) \
- printk(KERN_DEBUG "skt%u: %s: " fmt, \
- (skt)->nr, __func__ , ## arg); \
-} while (0)
-
-#else
-#define debug(skt, lvl, fmt, arg...) do { } while (0)
-#endif
-
-#define to_sa1100_socket(x) container_of(x, struct sa1100_pcmcia_socket, socket)
-
-/*
- * sa1100_pcmcia_default_mecr_timing
- * ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
- *
- * Calculate MECR clock wait states for given CPU clock
- * speed and command wait state. This function can be over-
- * written by a board specific version.
- *
- * The default is to simply calculate the BS values as specified in
- * the INTEL SA1100 development manual
- * "Expansion Memory (PCMCIA) Configuration Register (MECR)"
- * that's section 10.2.5 in _my_ version of the manual ;)
- */
-static unsigned int
-sa1100_pcmcia_default_mecr_timing(struct sa1100_pcmcia_socket *skt,
- unsigned int cpu_speed,
- unsigned int cmd_time)
-{
- return sa1100_pcmcia_mecr_bs(cmd_time, cpu_speed);
-}
-
-static unsigned short
-calc_speed(unsigned short *spds, int num, unsigned short dflt)
-{
- unsigned short speed = 0;
- int i;
-
- for (i = 0; i < num; i++)
- if (speed < spds[i])
- speed = spds[i];
- if (speed == 0)
- speed = dflt;
-
- return speed;
-}
-
-/* sa1100_pcmcia_set_mecr()
- * ^^^^^^^^^^^^^^^^^^^^^^^^^^^
- *
- * set MECR value for socket <sock> based on this sockets
- * io, mem and attribute space access speed.
- * Call board specific BS value calculation to allow boards
- * to tweak the BS values.
- */
-static int
-sa1100_pcmcia_set_mecr(struct sa1100_pcmcia_socket *skt, unsigned int cpu_clock)
-{
- u32 mecr, old_mecr;
- unsigned long flags;
- unsigned short speed;
- unsigned int bs_io, bs_mem, bs_attr;
-
- speed = calc_speed(skt->spd_io, MAX_IO_WIN, SA1100_PCMCIA_IO_ACCESS);
- bs_io = skt->ops->socket_get_timing(skt, cpu_clock, speed);
-
- speed = calc_speed(skt->spd_mem, MAX_WIN, SA1100_PCMCIA_3V_MEM_ACCESS);
- bs_mem = skt->ops->socket_get_timing(skt, cpu_clock, speed);
-
- speed = calc_speed(skt->spd_attr, MAX_WIN, SA1100_PCMCIA_3V_MEM_ACCESS);
- bs_attr = skt->ops->socket_get_timing(skt, cpu_clock, speed);
-
- local_irq_save(flags);
-
- old_mecr = mecr = MECR;
- MECR_FAST_SET(mecr, skt->nr, 0);
- MECR_BSIO_SET(mecr, skt->nr, bs_io);
- MECR_BSA_SET(mecr, skt->nr, bs_attr);
- MECR_BSM_SET(mecr, skt->nr, bs_mem);
- if (old_mecr != mecr)
- MECR = mecr;
-
- local_irq_restore(flags);
-
- debug(skt, 2, "FAST %X BSM %X BSA %X BSIO %X\n",
- MECR_FAST_GET(mecr, skt->nr),
- MECR_BSM_GET(mecr, skt->nr), MECR_BSA_GET(mecr, skt->nr),
- MECR_BSIO_GET(mecr, skt->nr));
-
- return 0;
-}
-
-static unsigned int sa1100_pcmcia_skt_state(struct sa1100_pcmcia_socket *skt)
-{
- struct pcmcia_state state;
- unsigned int stat;
-
- memset(&state, 0, sizeof(struct pcmcia_state));
-
- skt->ops->socket_state(skt, &state);
-
- stat = state.detect ? SS_DETECT : 0;
- stat |= state.ready ? SS_READY : 0;
- stat |= state.wrprot ? SS_WRPROT : 0;
- stat |= state.vs_3v ? SS_3VCARD : 0;
- stat |= state.vs_Xv ? SS_XVCARD : 0;
-
- /* The power status of individual sockets is not available
- * explicitly from the hardware, so we just remember the state
- * and regurgitate it upon request:
- */
- stat |= skt->cs_state.Vcc ? SS_POWERON : 0;
-
- if (skt->cs_state.flags & SS_IOCARD)
- stat |= state.bvd1 ? SS_STSCHG : 0;
- else {
- if (state.bvd1 == 0)
- stat |= SS_BATDEAD;
- else if (state.bvd2 == 0)
- stat |= SS_BATWARN;
- }
- return stat;
-}
-
-/*
- * sa1100_pcmcia_config_skt
- * ^^^^^^^^^^^^^^^^^^^^^^^^
- *
- * Convert PCMCIA socket state to our socket configure structure.
- */
-static int
-sa1100_pcmcia_config_skt(struct sa1100_pcmcia_socket *skt, socket_state_t *state)
-{
- int ret;
-
- ret = skt->ops->configure_socket(skt, state);
- if (ret == 0) {
- /*
- * This really needs a better solution. The IRQ
- * may or may not be claimed by the driver.
- */
- if (skt->irq_state != 1 && state->io_irq) {
- skt->irq_state = 1;
- set_irq_type(skt->irq, IRQT_FALLING);
- } else if (skt->irq_state == 1 && state->io_irq == 0) {
- skt->irq_state = 0;
- set_irq_type(skt->irq, IRQT_NOEDGE);
- }
-
- skt->cs_state = *state;
- }
-
- if (ret < 0)
- printk(KERN_ERR "sa1100_pcmcia: unable to configure "
- "socket %d\n", skt->nr);
-
- return ret;
-}
-
-/* sa1100_pcmcia_sock_init()
- * ^^^^^^^^^^^^^^^^^^^^^^^^^
- *
- * (Re-)Initialise the socket, turning on status interrupts
- * and PCMCIA bus. This must wait for power to stabilise
- * so that the card status signals report correctly.
- *
- * Returns: 0
- */
-static int sa1100_pcmcia_sock_init(struct pcmcia_socket *sock)
-{
- struct sa1100_pcmcia_socket *skt = to_sa1100_socket(sock);
-
- debug(skt, 2, "initializing socket\n");
-
- skt->ops->socket_init(skt);
- return 0;
-}
-
-
-/*
- * sa1100_pcmcia_suspend()
- * ^^^^^^^^^^^^^^^^^^^^^^^
- *
- * Remove power on the socket, disable IRQs from the card.
- * Turn off status interrupts, and disable the PCMCIA bus.
- *
- * Returns: 0
- */
-static int sa1100_pcmcia_suspend(struct pcmcia_socket *sock)
-{
- struct sa1100_pcmcia_socket *skt = to_sa1100_socket(sock);
- int ret;
-
- debug(skt, 2, "suspending socket\n");
-
- ret = sa1100_pcmcia_config_skt(skt, &dead_socket);
- if (ret == 0)
- skt->ops->socket_suspend(skt);
-
- return ret;
-}
-
-static spinlock_t status_lock = SPIN_LOCK_UNLOCKED;
-
-/* sa1100_check_status()
- * ^^^^^^^^^^^^^^^^^^^^^
- */
-static void sa1100_check_status(struct sa1100_pcmcia_socket *skt)
-{
- unsigned int events;
-
- debug(skt, 4, "entering PCMCIA monitoring thread\n");
-
- do {
- unsigned int status;
- unsigned long flags;
-
- status = sa1100_pcmcia_skt_state(skt);
-
- spin_lock_irqsave(&status_lock, flags);
- events = (status ^ skt->status) & skt->cs_state.csc_mask;
- skt->status = status;
- spin_unlock_irqrestore(&status_lock, flags);
-
- debug(skt, 4, "events: %s%s%s%s%s%s\n",
- events == 0 ? "<NONE>" : "",
- events & SS_DETECT ? "DETECT " : "",
- events & SS_READY ? "READY " : "",
- events & SS_BATDEAD ? "BATDEAD " : "",
- events & SS_BATWARN ? "BATWARN " : "",
- events & SS_STSCHG ? "STSCHG " : "");
-
- if (events)
- pcmcia_parse_events(&skt->socket, events);
- } while (events);
-}
-
-/* sa1100_pcmcia_poll_event()
- * ^^^^^^^^^^^^^^^^^^^^^^^^^^
- * Let's poll for events in addition to IRQs since IRQ only is unreliable...
- */
-static void sa1100_pcmcia_poll_event(unsigned long dummy)
-{
- struct sa1100_pcmcia_socket *skt = (struct sa1100_pcmcia_socket *)dummy;
- debug(skt, 4, "polling for events\n");
-
- mod_timer(&skt->poll_timer, jiffies + SA1100_PCMCIA_POLL_PERIOD);
-
- sa1100_check_status(skt);
-}
-
-
-/* sa1100_pcmcia_interrupt()
- * ^^^^^^^^^^^^^^^^^^^^^^^^^
- * Service routine for socket driver interrupts (requested by the
- * low-level PCMCIA init() operation via sa1100_pcmcia_thread()).
- * The actual interrupt-servicing work is performed by
- * sa1100_pcmcia_thread(), largely because the Card Services event-
- * handling code performs scheduling operations which cannot be
- * executed from within an interrupt context.
- */
-static irqreturn_t sa1100_pcmcia_interrupt(int irq, void *dev, struct pt_regs *regs)
-{
- struct sa1100_pcmcia_socket *skt = dev;
-
- debug(skt, 3, "servicing IRQ %d\n", irq);
-
- sa1100_check_status(skt);
-
- return IRQ_HANDLED;
-}
-
-
-/* sa1100_pcmcia_get_status()
- * ^^^^^^^^^^^^^^^^^^^^^^^^^^
- * Implements the get_status() operation for the in-kernel PCMCIA
- * service (formerly SS_GetStatus in Card Services). Essentially just
- * fills in bits in `status' according to internal driver state or
- * the value of the voltage detect chipselect register.
- *
- * As a debugging note, during card startup, the PCMCIA core issues
- * three set_socket() commands in a row the first with RESET deasserted,
- * the second with RESET asserted, and the last with RESET deasserted
- * again. Following the third set_socket(), a get_status() command will
- * be issued. The kernel is looking for the SS_READY flag (see
- * setup_socket(), reset_socket(), and unreset_socket() in cs.c).
- *
- * Returns: 0
- */
-static int
-sa1100_pcmcia_get_status(struct pcmcia_socket *sock, unsigned int *status)
-{
- struct sa1100_pcmcia_socket *skt = to_sa1100_socket(sock);
-
- skt->status = sa1100_pcmcia_skt_state(skt);
- *status = skt->status;
-
- return 0;
-}
-
-
-/* sa1100_pcmcia_get_socket()
- * ^^^^^^^^^^^^^^^^^^^^^^^^^^
- * Implements the get_socket() operation for the in-kernel PCMCIA
- * service (formerly SS_GetSocket in Card Services). Not a very
- * exciting routine.
- *
- * Returns: 0
- */
-static int
-sa1100_pcmcia_get_socket(struct pcmcia_socket *sock, socket_state_t *state)
-{
- struct sa1100_pcmcia_socket *skt = to_sa1100_socket(sock);
-
- debug(skt, 2, "\n");
-
- *state = skt->cs_state;
-
- return 0;
-}
-
-/* sa1100_pcmcia_set_socket()
- * ^^^^^^^^^^^^^^^^^^^^^^^^^^
- * Implements the set_socket() operation for the in-kernel PCMCIA
- * service (formerly SS_SetSocket in Card Services). We more or
- * less punt all of this work and let the kernel handle the details
- * of power configuration, reset, &c. We also record the value of
- * `state' in order to regurgitate it to the PCMCIA core later.
- *
- * Returns: 0
- */
-static int
-sa1100_pcmcia_set_socket(struct pcmcia_socket *sock, socket_state_t *state)
-{
- struct sa1100_pcmcia_socket *skt = to_sa1100_socket(sock);
-
- debug(skt, 2, "mask: %s%s%s%s%s%sflags: %s%s%s%s%s%sVcc %d Vpp %d irq %d\n",
- (state->csc_mask==0)?"<NONE> ":"",
- (state->csc_mask&SS_DETECT)?"DETECT ":"",
- (state->csc_mask&SS_READY)?"READY ":"",
- (state->csc_mask&SS_BATDEAD)?"BATDEAD ":"",
- (state->csc_mask&SS_BATWARN)?"BATWARN ":"",
- (state->csc_mask&SS_STSCHG)?"STSCHG ":"",
- (state->flags==0)?"<NONE> ":"",
- (state->flags&SS_PWR_AUTO)?"PWR_AUTO ":"",
- (state->flags&SS_IOCARD)?"IOCARD ":"",
- (state->flags&SS_RESET)?"RESET ":"",
- (state->flags&SS_SPKR_ENA)?"SPKR_ENA ":"",
- (state->flags&SS_OUTPUT_ENA)?"OUTPUT_ENA ":"",
- state->Vcc, state->Vpp, state->io_irq);
-
- return sa1100_pcmcia_config_skt(skt, state);
-} /* sa1100_pcmcia_set_socket() */
-
-
-/* sa1100_pcmcia_set_io_map()
- * ^^^^^^^^^^^^^^^^^^^^^^^^^^
- * Implements the set_io_map() operation for the in-kernel PCMCIA
- * service (formerly SS_SetIOMap in Card Services). We configure
- * the map speed as requested, but override the address ranges
- * supplied by Card Services.
- *
- * Returns: 0 on success, -1 on error
- */
-static int
-sa1100_pcmcia_set_io_map(struct pcmcia_socket *sock, struct pccard_io_map *map)
-{
- struct sa1100_pcmcia_socket *skt = to_sa1100_socket(sock);
- unsigned short speed = map->speed;
-
- debug(skt, 2, "map %u speed %u start 0x%08x stop 0x%08x\n",
- map->map, map->speed, map->start, map->stop);
- debug(skt, 2, "flags: %s%s%s%s%s%s%s%s\n",
- (map->flags==0)?"<NONE>":"",
- (map->flags&MAP_ACTIVE)?"ACTIVE ":"",
- (map->flags&MAP_16BIT)?"16BIT ":"",
- (map->flags&MAP_AUTOSZ)?"AUTOSZ ":"",
- (map->flags&MAP_0WS)?"0WS ":"",
- (map->flags&MAP_WRPROT)?"WRPROT ":"",
- (map->flags&MAP_USE_WAIT)?"USE_WAIT ":"",
- (map->flags&MAP_PREFETCH)?"PREFETCH ":"");
-
- if (map->map >= MAX_IO_WIN) {
- printk(KERN_ERR "%s(): map (%d) out of range\n", __FUNCTION__,
- map->map);
- return -1;
- }
-
- if (map->flags & MAP_ACTIVE) {
- if (speed == 0)
- speed = SA1100_PCMCIA_IO_ACCESS;
- } else {
- speed = 0;
- }
-
- skt->spd_io[map->map] = speed;
- sa1100_pcmcia_set_mecr(skt, cpufreq_get(0));
-
- if (map->stop == 1)
- map->stop = PAGE_SIZE-1;
-
- map->stop -= map->start;
- map->stop += (unsigned long)skt->virt_io;
- map->start = (unsigned long)skt->virt_io;
-
- return 0;
-} /* sa1100_pcmcia_set_io_map() */
-
-
-/* sa1100_pcmcia_set_mem_map()
- * ^^^^^^^^^^^^^^^^^^^^^^^^^^^
- * Implements the set_mem_map() operation for the in-kernel PCMCIA
- * service (formerly SS_SetMemMap in Card Services). We configure
- * the map speed as requested, but override the address ranges
- * supplied by Card Services.
- *
- * Returns: 0 on success, -1 on error
- */
-static int
-sa1100_pcmcia_set_mem_map(struct pcmcia_socket *sock, struct pccard_mem_map *map)
-{
- struct sa1100_pcmcia_socket *skt = to_sa1100_socket(sock);
- struct resource *res;
- unsigned short speed = map->speed;
-
- debug(skt, 2, "map %u speed %u card_start %08x\n",
- map->map, map->speed, map->card_start);
- debug(skt, 2, "flags: %s%s%s%s%s%s%s%s\n",
- (map->flags==0)?"<NONE>":"",
- (map->flags&MAP_ACTIVE)?"ACTIVE ":"",
- (map->flags&MAP_16BIT)?"16BIT ":"",
- (map->flags&MAP_AUTOSZ)?"AUTOSZ ":"",
- (map->flags&MAP_0WS)?"0WS ":"",
- (map->flags&MAP_WRPROT)?"WRPROT ":"",
- (map->flags&MAP_ATTRIB)?"ATTRIB ":"",
- (map->flags&MAP_USE_WAIT)?"USE_WAIT ":"");
-
- if (map->map >= MAX_WIN)
- return -EINVAL;
-
- if (map->flags & MAP_ACTIVE) {
- if (speed == 0)
- speed = 300;
- } else {
- speed = 0;
- }
-
- if (map->flags & MAP_ATTRIB) {
- res = &skt->res_attr;
- skt->spd_attr[map->map] = speed;
- skt->spd_mem[map->map] = 0;
- } else {
- res = &skt->res_mem;
- skt->spd_attr[map->map] = 0;
- skt->spd_mem[map->map] = speed;
- }
-
- sa1100_pcmcia_set_mecr(skt, cpufreq_get(0));
-
- map->sys_stop -= map->sys_start;
- map->sys_stop += res->start + map->card_start;
- map->sys_start = res->start + map->card_start;
-
- return 0;
-}
-
-struct bittbl {
- unsigned int mask;
- const char *name;
-};
-
-static struct bittbl status_bits[] = {
- { SS_WRPROT, "SS_WRPROT" },
- { SS_BATDEAD, "SS_BATDEAD" },
- { SS_BATWARN, "SS_BATWARN" },
- { SS_READY, "SS_READY" },
- { SS_DETECT, "SS_DETECT" },
- { SS_POWERON, "SS_POWERON" },
- { SS_STSCHG, "SS_STSCHG" },
- { SS_3VCARD, "SS_3VCARD" },
- { SS_XVCARD, "SS_XVCARD" },
-};
-
-static struct bittbl conf_bits[] = {
- { SS_PWR_AUTO, "SS_PWR_AUTO" },
- { SS_IOCARD, "SS_IOCARD" },
- { SS_RESET, "SS_RESET" },
- { SS_DMA_MODE, "SS_DMA_MODE" },
- { SS_SPKR_ENA, "SS_SPKR_ENA" },
- { SS_OUTPUT_ENA, "SS_OUTPUT_ENA" },
-};
-
-static void
-dump_bits(char **p, const char *prefix, unsigned int val, struct bittbl *bits, int sz)
-{
- char *b = *p;
- int i;
-
- b += sprintf(b, "%-9s:", prefix);
- for (i = 0; i < sz; i++)
- if (val & bits[i].mask)
- b += sprintf(b, " %s", bits[i].name);
- *b++ = '\n';
- *p = b;
-}
-
-/* show_status()
- * ^^^^^^^^^^^^^^^^^^^^^^^^^^^
- * Implements the /sys/class/pcmcia_socket/??/status file.
- *
- * Returns: the number of characters added to the buffer
- */
-static ssize_t show_status(struct class_device *class_dev, char *buf)
-{
- struct sa1100_pcmcia_socket *skt = container_of(class_dev,
- struct sa1100_pcmcia_socket, socket.dev);
- unsigned int clock = cpufreq_get(0);
- unsigned long mecr = MECR;
- char *p = buf;
-
- p+=sprintf(p, "slot : %d\n", skt->nr);
-
- dump_bits(&p, "status", skt->status,
- status_bits, ARRAY_SIZE(status_bits));
- dump_bits(&p, "csc_mask", skt->cs_state.csc_mask,
- status_bits, ARRAY_SIZE(status_bits));
- dump_bits(&p, "cs_flags", skt->cs_state.flags,
- conf_bits, ARRAY_SIZE(conf_bits));
-
- p+=sprintf(p, "Vcc : %d\n", skt->cs_state.Vcc);
- p+=sprintf(p, "Vpp : %d\n", skt->cs_state.Vpp);
- p+=sprintf(p, "IRQ : %d (%d)\n", skt->cs_state.io_irq, skt->irq);
-
- p+=sprintf(p, "I/O : %u (%u)\n",
- calc_speed(skt->spd_io, MAX_IO_WIN, SA1100_PCMCIA_IO_ACCESS),
- sa1100_pcmcia_cmd_time(clock, MECR_BSIO_GET(mecr, skt->nr)));
-
- p+=sprintf(p, "attribute: %u (%u)\n",
- calc_speed(skt->spd_attr, MAX_WIN, SA1100_PCMCIA_3V_MEM_ACCESS),
- sa1100_pcmcia_cmd_time(clock, MECR_BSA_GET(mecr, skt->nr)));
-
- p+=sprintf(p, "common : %u (%u)\n",
- calc_speed(skt->spd_mem, MAX_WIN, SA1100_PCMCIA_3V_MEM_ACCESS),
- sa1100_pcmcia_cmd_time(clock, MECR_BSM_GET(mecr, skt->nr)));
-
- return p-buf;
-}
-static CLASS_DEVICE_ATTR(status, S_IRUGO, show_status, NULL);
-
-
-static struct pccard_operations sa11xx_pcmcia_operations = {
- .init = sa1100_pcmcia_sock_init,
- .suspend = sa1100_pcmcia_suspend,
- .get_status = sa1100_pcmcia_get_status,
- .get_socket = sa1100_pcmcia_get_socket,
- .set_socket = sa1100_pcmcia_set_socket,
- .set_io_map = sa1100_pcmcia_set_io_map,
- .set_mem_map = sa1100_pcmcia_set_mem_map,
-};
-
-int sa11xx_request_irqs(struct sa1100_pcmcia_socket *skt, struct pcmcia_irqs *irqs, int nr)
-{
- int i, res = 0;
-
- for (i = 0; i < nr; i++) {
- if (irqs[i].sock != skt->nr)
- continue;
- res = request_irq(irqs[i].irq, sa1100_pcmcia_interrupt,
- SA_INTERRUPT, irqs[i].str, skt);
- if (res)
- break;
- set_irq_type(irqs[i].irq, IRQT_NOEDGE);
- }
-
- if (res) {
- printk(KERN_ERR "PCMCIA: request for IRQ%d failed (%d)\n",
- irqs[i].irq, res);
-
- while (i--)
- if (irqs[i].sock == skt->nr)
- free_irq(irqs[i].irq, skt);
- }
- return res;
-}
-EXPORT_SYMBOL(sa11xx_request_irqs);
-
-void sa11xx_free_irqs(struct sa1100_pcmcia_socket *skt, struct pcmcia_irqs *irqs, int nr)
-{
- int i;
-
- for (i = 0; i < nr; i++)
- if (irqs[i].sock == skt->nr)
- free_irq(irqs[i].irq, skt);
-}
-EXPORT_SYMBOL(sa11xx_free_irqs);
-
-void sa11xx_disable_irqs(struct sa1100_pcmcia_socket *skt, struct pcmcia_irqs *irqs, int nr)
-{
- int i;
-
- for (i = 0; i < nr; i++)
- if (irqs[i].sock == skt->nr)
- set_irq_type(irqs[i].irq, IRQT_NOEDGE);
-}
-EXPORT_SYMBOL(sa11xx_disable_irqs);
-
-void sa11xx_enable_irqs(struct sa1100_pcmcia_socket *skt, struct pcmcia_irqs *irqs, int nr)
-{
- int i;
-
- for (i = 0; i < nr; i++)
- if (irqs[i].sock == skt->nr) {
- set_irq_type(irqs[i].irq, IRQT_RISING);
- set_irq_type(irqs[i].irq, IRQT_BOTHEDGE);
- }
-}
-EXPORT_SYMBOL(sa11xx_enable_irqs);
-
-static LIST_HEAD(sa1100_sockets);
-static DECLARE_MUTEX(sa1100_sockets_lock);
-
-static const char *skt_names[] = {
- "PCMCIA socket 0",
- "PCMCIA socket 1",
-};
-
-struct skt_dev_info {
- int nskt;
- struct sa1100_pcmcia_socket skt[0];
-};
-
-#define SKT_DEV_INFO_SIZE(n) \
- (sizeof(struct skt_dev_info) + (n)*sizeof(struct sa1100_pcmcia_socket))
-
-int sa11xx_drv_pcmcia_probe(struct device *dev, struct pcmcia_low_level *ops, int first, int nr)
-{
- struct skt_dev_info *sinfo;
- unsigned int cpu_clock;
- int ret, i;
-
- /*
- * set default MECR calculation if the board specific
- * code did not specify one...
- */
- if (!ops->socket_get_timing)
- ops->socket_get_timing = sa1100_pcmcia_default_mecr_timing;
-
- down(&sa1100_sockets_lock);
-
- sinfo = kmalloc(SKT_DEV_INFO_SIZE(nr), GFP_KERNEL);
- if (!sinfo) {
- ret = -ENOMEM;
- goto out;
- }
-
- memset(sinfo, 0, SKT_DEV_INFO_SIZE(nr));
- sinfo->nskt = nr;
-
- cpu_clock = cpufreq_get(0);
-
- /*
- * Initialise the per-socket structure.
- */
- for (i = 0; i < nr; i++) {
- struct sa1100_pcmcia_socket *skt = &sinfo->skt[i];
-
- skt->socket.ops = &sa11xx_pcmcia_operations;
- skt->socket.owner = ops->owner;
- skt->socket.dev.dev = dev;
-
- init_timer(&skt->poll_timer);
- skt->poll_timer.function = sa1100_pcmcia_poll_event;
- skt->poll_timer.data = (unsigned long)skt;
- skt->poll_timer.expires = jiffies + SA1100_PCMCIA_POLL_PERIOD;
-
- skt->nr = first + i;
- skt->irq = NO_IRQ;
- skt->dev = dev;
- skt->ops = ops;
-
- skt->res_skt.start = _PCMCIA(skt->nr);
- skt->res_skt.end = _PCMCIA(skt->nr) + PCMCIASp - 1;
- skt->res_skt.name = skt_names[skt->nr];
- skt->res_skt.flags = IORESOURCE_MEM;
-
- ret = request_resource(&iomem_resource, &skt->res_skt);
- if (ret)
- goto out_err_1;
-
- skt->res_io.start = _PCMCIAIO(skt->nr);
- skt->res_io.end = _PCMCIAIO(skt->nr) + PCMCIAIOSp - 1;
- skt->res_io.name = "io";
- skt->res_io.flags = IORESOURCE_MEM | IORESOURCE_BUSY;
-
- ret = request_resource(&skt->res_skt, &skt->res_io);
- if (ret)
- goto out_err_2;
-
- skt->res_mem.start = _PCMCIAMem(skt->nr);
- skt->res_mem.end = _PCMCIAMem(skt->nr) + PCMCIAMemSp - 1;
- skt->res_mem.name = "memory";
- skt->res_mem.flags = IORESOURCE_MEM;
-
- ret = request_resource(&skt->res_skt, &skt->res_mem);
- if (ret)
- goto out_err_3;
-
- skt->res_attr.start = _PCMCIAAttr(skt->nr);
- skt->res_attr.end = _PCMCIAAttr(skt->nr) + PCMCIAAttrSp - 1;
- skt->res_attr.name = "attribute";
- skt->res_attr.flags = IORESOURCE_MEM;
-
- ret = request_resource(&skt->res_skt, &skt->res_attr);
- if (ret)
- goto out_err_4;
-
- skt->virt_io = ioremap(skt->res_io.start, 0x10000);
- if (skt->virt_io == NULL) {
- ret = -ENOMEM;
- goto out_err_5;
- }
-
- list_add(&skt->node, &sa1100_sockets);
-
- /*
- * We initialize the MECR to default values here, because
- * we are not guaranteed to see a SetIOMap operation at
- * runtime.
- */
- sa1100_pcmcia_set_mecr(skt, cpu_clock);
-
- ret = ops->hw_init(skt);
- if (ret)
- goto out_err_6;
-
- skt->socket.features = SS_CAP_STATIC_MAP|SS_CAP_PCCARD;
- skt->socket.irq_mask = 0;
- skt->socket.map_size = PAGE_SIZE;
- skt->socket.pci_irq = skt->irq;
- skt->socket.io_offset = (unsigned long)skt->virt_io;
-
- skt->status = sa1100_pcmcia_skt_state(skt);
-
- ret = pcmcia_register_socket(&skt->socket);
- if (ret)
- goto out_err_7;
-
- WARN_ON(skt->socket.sock != i);
-
- add_timer(&skt->poll_timer);
-
- class_device_create_file(&skt->socket.dev, &class_device_attr_status);
- }
-
- dev_set_drvdata(dev, sinfo);
- ret = 0;
- goto out;
-
- do {
- struct sa1100_pcmcia_socket *skt = &sinfo->skt[i];
-
- del_timer_sync(&skt->poll_timer);
- pcmcia_unregister_socket(&skt->socket);
-
- out_err_7:
- flush_scheduled_work();
-
- ops->hw_shutdown(skt);
- out_err_6:
- list_del(&skt->node);
- iounmap(skt->virt_io);
- out_err_5:
- release_resource(&skt->res_attr);
- out_err_4:
- release_resource(&skt->res_mem);
- out_err_3:
- release_resource(&skt->res_io);
- out_err_2:
- release_resource(&skt->res_skt);
- out_err_1:
- i--;
- } while (i > 0);
-
- kfree(sinfo);
-
- out:
- up(&sa1100_sockets_lock);
- return ret;
-}
-EXPORT_SYMBOL(sa11xx_drv_pcmcia_probe);
-
-int sa11xx_drv_pcmcia_remove(struct device *dev)
-{
- struct skt_dev_info *sinfo = dev_get_drvdata(dev);
- int i;
-
- dev_set_drvdata(dev, NULL);
-
- down(&sa1100_sockets_lock);
- for (i = 0; i < sinfo->nskt; i++) {
- struct sa1100_pcmcia_socket *skt = &sinfo->skt[i];
-
- del_timer_sync(&skt->poll_timer);
-
- pcmcia_unregister_socket(&skt->socket);
-
- flush_scheduled_work();
-
- skt->ops->hw_shutdown(skt);
-
- sa1100_pcmcia_config_skt(skt, &dead_socket);
-
- list_del(&skt->node);
- iounmap(skt->virt_io);
- skt->virt_io = NULL;
- release_resource(&skt->res_attr);
- release_resource(&skt->res_mem);
- release_resource(&skt->res_io);
- release_resource(&skt->res_skt);
- }
- up(&sa1100_sockets_lock);
-
- kfree(sinfo);
-
- return 0;
-}
-EXPORT_SYMBOL(sa11xx_drv_pcmcia_remove);
-
-#ifdef CONFIG_CPU_FREQ
-
-/* sa1100_pcmcia_update_mecr()
- * ^^^^^^^^^^^^^^^^^^^^^^^^^^^
- * When sa1100_pcmcia_notifier() decides that a MECR adjustment (due
- * to a core clock frequency change) is needed, this routine establishes
- * new BS_xx values consistent with the clock speed `clock'.
- */
-static void sa1100_pcmcia_update_mecr(unsigned int clock)
-{
- struct sa1100_pcmcia_socket *skt;
-
- down(&sa1100_sockets_lock);
- list_for_each_entry(skt, &sa1100_sockets, node)
- sa1100_pcmcia_set_mecr(skt, clock);
- up(&sa1100_sockets_lock);
-}
-
-/* sa1100_pcmcia_notifier()
- * ^^^^^^^^^^^^^^^^^^^^^^^^
- * When changing the processor core clock frequency, it is necessary
- * to adjust the MECR timings accordingly. We've recorded the timings
- * requested by Card Services, so this is just a matter of finding
- * out what our current speed is, and then recomputing the new MECR
- * values.
- *
- * Returns: 0 on success, -1 on error
- */
-static int
-sa1100_pcmcia_notifier(struct notifier_block *nb, unsigned long val,
- void *data)
-{
- struct cpufreq_freqs *freqs = data;
-
- switch (val) {
- case CPUFREQ_PRECHANGE:
- if (freqs->new > freqs->old)
- sa1100_pcmcia_update_mecr(freqs->new);
- break;
-
- case CPUFREQ_POSTCHANGE:
- if (freqs->new < freqs->old)
- sa1100_pcmcia_update_mecr(freqs->new);
- break;
- }
-
- return 0;
-}
-
-static struct notifier_block sa1100_pcmcia_notifier_block = {
- .notifier_call = sa1100_pcmcia_notifier
-};
-
-static int __init sa11xx_pcmcia_init(void)
-{
- int ret;
-
- printk(KERN_INFO "SA11xx PCMCIA\n");
-
- ret = cpufreq_register_notifier(&sa1100_pcmcia_notifier_block,
- CPUFREQ_TRANSITION_NOTIFIER);
- if (ret < 0)
- printk(KERN_ERR "Unable to register CPU frequency change "
- "notifier (%d)\n", ret);
-
- return ret;
-}
-module_init(sa11xx_pcmcia_init);
-
-static void __exit sa11xx_pcmcia_exit(void)
-{
- cpufreq_unregister_notifier(&sa1100_pcmcia_notifier_block, CPUFREQ_TRANSITION_NOTIFIER);
-}
-
-module_exit(sa11xx_pcmcia_exit);
-#endif
-
-MODULE_AUTHOR("John Dorsey <john+@cs.cmu.edu>");
-MODULE_DESCRIPTION("Linux PCMCIA Card Services: SA-11xx core socket driver");
-MODULE_LICENSE("Dual MPL/GPL");
+++ /dev/null
-/*
- * linux/include/asm/arch/pcmcia.h
- *
- * Copyright (C) 2000 John G Dorsey <john+@cs.cmu.edu>
- *
- * This file contains definitions for the low-level SA-1100 kernel PCMCIA
- * interface. Please see linux/Documentation/arm/SA1100/PCMCIA for details.
- */
-#ifndef _ASM_ARCH_PCMCIA
-#define _ASM_ARCH_PCMCIA
-
-/* include the world */
-#include <pcmcia/version.h>
-#include <pcmcia/cs_types.h>
-#include <pcmcia/cs.h>
-#include <pcmcia/ss.h>
-#include <pcmcia/bulkmem.h>
-#include <pcmcia/cistpl.h>
-#include "cs_internal.h"
-
-struct device;
-
-/* Ideally, we'd support up to MAX_SOCK sockets, but the SA-1100 only
- * has support for two. This shows up in lots of hardwired ways, such
- * as the fact that MECR only has enough bits to configure two sockets.
- * Since it's so entrenched in the hardware, limiting the software
- * in this way doesn't seem too terrible.
- */
-#define SA1100_PCMCIA_MAX_SOCK (2)
-
-struct pcmcia_state {
- unsigned detect: 1,
- ready: 1,
- bvd1: 1,
- bvd2: 1,
- wrprot: 1,
- vs_3v: 1,
- vs_Xv: 1;
-};
-
-/*
- * This structure encapsulates per-socket state which we might need to
- * use when responding to a Card Services query of some kind.
- */
-struct sa1100_pcmcia_socket {
- struct pcmcia_socket socket;
-
- /*
- * Info from low level handler
- */
- struct device *dev;
- unsigned int nr;
- unsigned int irq;
-
- /*
- * Core PCMCIA state
- */
- struct pcmcia_low_level *ops;
-
- unsigned int status;
- socket_state_t cs_state;
-
- unsigned short spd_io[MAX_IO_WIN];
- unsigned short spd_mem[MAX_WIN];
- unsigned short spd_attr[MAX_WIN];
-
- struct resource res_skt;
- struct resource res_io;
- struct resource res_mem;
- struct resource res_attr;
- void *virt_io;
-
- unsigned int irq_state;
-
- struct timer_list poll_timer;
- struct list_head node;
-};
-
-struct pcmcia_low_level {
- struct module *owner;
-
- int (*hw_init)(struct sa1100_pcmcia_socket *);
- void (*hw_shutdown)(struct sa1100_pcmcia_socket *);
-
- void (*socket_state)(struct sa1100_pcmcia_socket *, struct pcmcia_state *);
- int (*configure_socket)(struct sa1100_pcmcia_socket *, const socket_state_t *);
-
- /*
- * Enable card status IRQs on (re-)initialisation. This can
- * be called at initialisation, power management event, or
- * pcmcia event.
- */
- void (*socket_init)(struct sa1100_pcmcia_socket *);
-
- /*
- * Disable card status IRQs and PCMCIA bus on suspend.
- */
- void (*socket_suspend)(struct sa1100_pcmcia_socket *);
-
- /*
- * Calculate MECR timing clock wait states
- */
- unsigned int (*socket_get_timing)(struct sa1100_pcmcia_socket *,
- unsigned int cpu_speed, unsigned int cmd_time);
-};
-
-struct pcmcia_irqs {
- int sock;
- int irq;
- const char *str;
-};
-
-int sa11xx_request_irqs(struct sa1100_pcmcia_socket *skt, struct pcmcia_irqs *irqs, int nr);
-void sa11xx_free_irqs(struct sa1100_pcmcia_socket *skt, struct pcmcia_irqs *irqs, int nr);
-void sa11xx_disable_irqs(struct sa1100_pcmcia_socket *skt, struct pcmcia_irqs *irqs, int nr);
-void sa11xx_enable_irqs(struct sa1100_pcmcia_socket *skt, struct pcmcia_irqs *irqs, int nr);
-
-extern int sa11xx_drv_pcmcia_probe(struct device *dev, struct pcmcia_low_level *ops, int first, int nr);
-extern int sa11xx_drv_pcmcia_remove(struct device *dev);
-
-#endif
+++ /dev/null
-#define PCMCIA 1
-#include "qlogicfas.c"
+++ /dev/null
-/* to be used by qlogicfas and qlogic_cs */
-#ifndef __QLOGICFAS_H
-#define __QLOGICFAS_H
-
-/*----------------------------------------------------------------*/
-/* Configuration */
-
-/* Set the following to 2 to use normal interrupt (active high/totempole-
- tristate), otherwise use 0 (REQUIRED FOR PCMCIA) for active low, open
- drain */
-
-#define QL_INT_ACTIVE_HIGH 2
-
-/* Set the following to max out the speed of the PIO PseudoDMA transfers,
- again, 0 tends to be slower, but more stable. */
-
-#define QL_TURBO_PDMA 1
-
-/* This should be 1 to enable parity detection */
-
-#define QL_ENABLE_PARITY 1
-
-/* This will reset all devices when the driver is initialized (during bootup).
- The other linux drivers don't do this, but the DOS drivers do, and after
- using DOS or some kind of crash or lockup this will bring things back
- without requiring a cold boot. It does take some time to recover from a
- reset, so it is slower, and I have seen timeouts so that devices weren't
- recognized when this was set. */
-
-#define QL_RESET_AT_START 0
-
-/* crystal frequency in megahertz (for offset 5 and 9)
- Please set this for your card. Most Qlogic cards are 40 Mhz. The
- Control Concepts ISA (not VLB) is 24 Mhz */
-
-#define XTALFREQ 40
-
-/**********/
-/* DANGER! modify these at your own risk */
-/* SLOWCABLE can usually be reset to zero if you have a clean setup and
- proper termination. The rest are for synchronous transfers and other
- advanced features if your device can transfer faster than 5Mb/sec.
- If you are really curious, email me for a quick howto until I have
- something official */
-/**********/
-
-/*****/
-/* config register 1 (offset 8) options */
-/* This needs to be set to 1 if your cabling is long or noisy */
-#define SLOWCABLE 1
-
-/*****/
-/* offset 0xc */
-/* This will set fast (10Mhz) synchronous timing when set to 1
- For this to have an effect, FASTCLK must also be 1 */
-#define FASTSCSI 0
-
-/* This when set to 1 will set a faster sync transfer rate */
-#define FASTCLK 0 /*(XTALFREQ>25?1:0)*/
-
-/*****/
-/* offset 6 */
-/* This is the sync transfer divisor, XTALFREQ/X will be the maximum
- achievable data rate (assuming the rest of the system is capable
- and set properly) */
-#define SYNCXFRPD 5 /*(XTALFREQ/5)*/
-
-/*****/
-/* offset 7 */
-/* This is the count of how many synchronous transfers can take place
- i.e. how many reqs can occur before an ack is given.
- The maximum value for this is 15, the upper bits can modify
- REQ/ACK assertion and deassertion during synchronous transfers
- If this is 0, the bus will only transfer asynchronously */
-#define SYNCOFFST 0
-/* for the curious, bits 7&6 control the deassertion delay in 1/2 cycles
- of the 40Mhz clock. If FASTCLK is 1, specifying 01 (1/2) will
- cause the deassertion to be early by 1/2 clock. Bits 5&4 control
- the assertion delay, also in 1/2 clocks (FASTCLK is ignored here). */
-
-/*----------------------------------------------------------------*/
-#ifdef PCMCIA
-#undef QL_INT_ACTIVE_HIGH
-#define QL_INT_ACTIVE_HIGH 0
-#endif
-
-struct qlogicfas_priv;
-typedef struct qlogicfas_priv *qlogicfas_priv_t;
-struct qlogicfas_priv {
- int qbase; /* Port */
- int qinitid; /* initiator ID */
- int qabort; /* Flag to cause an abort */
- int qlirq; /* IRQ being used */
- char qinfo[80]; /* description */
- Scsi_Cmnd *qlcmd; /* current command being processed */
- struct Scsi_Host *shost; /* pointer back to host */
- qlogicfas_priv_t next; /* next private struct */
-};
-
-extern int qlcfg5;
-extern int qlcfg6;
-extern int qlcfg7;
-extern int qlcfg8;
-extern int qlcfg9;
-extern int qlcfgc;
-
-/* The qlogic card uses two register maps - These macros select which one */
-#define REG0 ( outb( inb( qbase + 0xd ) & 0x7f , qbase + 0xd ), outb( 4 , qbase + 0xd ))
-#define REG1 ( outb( inb( qbase + 0xd ) | 0x80 , qbase + 0xd ), outb( 0xb4 | QL_INT_ACTIVE_HIGH , qbase + 0xd ))
-
-/* following is watchdog timeout in microseconds */
-#define WATCHDOG 5000000
-
-/*----------------------------------------------------------------*/
-/* the following will set the monitor border color (useful to find
- where something crashed or gets stuck at and as a simple profiler) */
-
-#if 0
-#define rtrc(i) {inb(0x3da);outb(0x31,0x3c0);outb((i),0x3c0);}
-#else
-#define rtrc(i) {}
-#endif
-#endif /* __QLOGICFAS_H */
-
+++ /dev/null
-/*
- * drivers/usb/core/driverfs.c
- *
- * (C) Copyright 2002 David Brownell
- * (C) Copyright 2002 Greg Kroah-Hartman
- * (C) Copyright 2002 IBM Corp.
- *
- * All of the driverfs file attributes for usb devices and interfaces.
- *
- */
-
-
-#include <linux/config.h>
-#include <linux/kernel.h>
-
-#ifdef CONFIG_USB_DEBUG
- #define DEBUG
-#else
- #undef DEBUG
-#endif
-#include <linux/usb.h>
-
-#include "usb.h"
-
-/* Active configuration fields */
-#define usb_actconfig_show(field, multiplier, format_string) \
-static ssize_t show_##field (struct device *dev, char *buf) \
-{ \
- struct usb_device *udev; \
- \
- udev = to_usb_device (dev); \
- if (udev->actconfig) \
- return sprintf (buf, format_string, \
- udev->actconfig->desc.field * multiplier); \
- else \
- return 0; \
-} \
-
-#define usb_actconfig_attr(field, multiplier, format_string) \
-usb_actconfig_show(field, multiplier, format_string) \
-static DEVICE_ATTR(field, S_IRUGO, show_##field, NULL);
-
-usb_actconfig_attr (bNumInterfaces, 1, "%2d\n")
-usb_actconfig_attr (bmAttributes, 1, "%2x\n")
-usb_actconfig_attr (bMaxPower, 2, "%3dmA\n")
-
-/* configuration value is always present, and r/w */
-usb_actconfig_show(bConfigurationValue, 1, "%u\n");
-
-static ssize_t
-set_bConfigurationValue (struct device *dev, const char *buf, size_t count)
-{
- struct usb_device *udev = udev = to_usb_device (dev);
- int config, value;
-
- if (sscanf (buf, "%u", &config) != 1 || config > 255)
- return -EINVAL;
- down(&udev->serialize);
- value = usb_set_configuration (udev, config);
- up(&udev->serialize);
- return (value < 0) ? value : count;
-}
-
-static DEVICE_ATTR(bConfigurationValue, S_IRUGO | S_IWUSR,
- show_bConfigurationValue, set_bConfigurationValue);
-
-/* String fields */
-#define usb_string_attr(name, field) \
-static ssize_t show_##name(struct device *dev, char *buf) \
-{ \
- struct usb_device *udev; \
- int len; \
- \
- udev = to_usb_device (dev); \
- len = usb_string(udev, udev->descriptor.field, buf, PAGE_SIZE); \
- if (len < 0) \
- return 0; \
- buf[len] = '\n'; \
- buf[len+1] = 0; \
- return len+1; \
-} \
-static DEVICE_ATTR(name, S_IRUGO, show_##name, NULL);
-
-usb_string_attr(product, iProduct);
-usb_string_attr(manufacturer, iManufacturer);
-usb_string_attr(serial, iSerialNumber);
-
-static ssize_t
-show_speed (struct device *dev, char *buf)
-{
- struct usb_device *udev;
- char *speed;
-
- udev = to_usb_device (dev);
-
- switch (udev->speed) {
- case USB_SPEED_LOW:
- speed = "1.5";
- break;
- case USB_SPEED_UNKNOWN:
- case USB_SPEED_FULL:
- speed = "12";
- break;
- case USB_SPEED_HIGH:
- speed = "480";
- break;
- default:
- speed = "unknown";
- }
- return sprintf (buf, "%s\n", speed);
-}
-static DEVICE_ATTR(speed, S_IRUGO, show_speed, NULL);
-
-static ssize_t
-show_devnum (struct device *dev, char *buf)
-{
- struct usb_device *udev;
-
- udev = to_usb_device (dev);
- return sprintf (buf, "%d\n", udev->devnum);
-}
-static DEVICE_ATTR(devnum, S_IRUGO, show_devnum, NULL);
-
-static ssize_t
-show_version (struct device *dev, char *buf)
-{
- struct usb_device *udev;
-
- udev = to_usb_device (dev);
- return sprintf (buf, "%2x.%02x\n", udev->descriptor.bcdUSB >> 8,
- udev->descriptor.bcdUSB & 0xff);
-}
-static DEVICE_ATTR(version, S_IRUGO, show_version, NULL);
-
-static ssize_t
-show_maxchild (struct device *dev, char *buf)
-{
- struct usb_device *udev;
-
- udev = to_usb_device (dev);
- return sprintf (buf, "%d\n", udev->maxchild);
-}
-static DEVICE_ATTR(maxchild, S_IRUGO, show_maxchild, NULL);
-
-/* Descriptor fields */
-#define usb_descriptor_attr(field, format_string) \
-static ssize_t \
-show_##field (struct device *dev, char *buf) \
-{ \
- struct usb_device *udev; \
- \
- udev = to_usb_device (dev); \
- return sprintf (buf, format_string, udev->descriptor.field); \
-} \
-static DEVICE_ATTR(field, S_IRUGO, show_##field, NULL);
-
-usb_descriptor_attr (idVendor, "%04x\n")
-usb_descriptor_attr (idProduct, "%04x\n")
-usb_descriptor_attr (bcdDevice, "%04x\n")
-usb_descriptor_attr (bDeviceClass, "%02x\n")
-usb_descriptor_attr (bDeviceSubClass, "%02x\n")
-usb_descriptor_attr (bDeviceProtocol, "%02x\n")
-usb_descriptor_attr (bNumConfigurations, "%d\n")
-
-
-void usb_create_driverfs_dev_files (struct usb_device *udev)
-{
- struct device *dev = &udev->dev;
-
- /* current configuration's attributes */
- device_create_file (dev, &dev_attr_bNumInterfaces);
- device_create_file (dev, &dev_attr_bConfigurationValue);
- device_create_file (dev, &dev_attr_bmAttributes);
- device_create_file (dev, &dev_attr_bMaxPower);
-
- /* device attributes */
- device_create_file (dev, &dev_attr_idVendor);
- device_create_file (dev, &dev_attr_idProduct);
- device_create_file (dev, &dev_attr_bcdDevice);
- device_create_file (dev, &dev_attr_bDeviceClass);
- device_create_file (dev, &dev_attr_bDeviceSubClass);
- device_create_file (dev, &dev_attr_bDeviceProtocol);
- device_create_file (dev, &dev_attr_bNumConfigurations);
-
- /* speed varies depending on how you connect the device */
- device_create_file (dev, &dev_attr_speed);
- // FIXME iff there are other speed configs, show how many
-
- if (udev->descriptor.iManufacturer)
- device_create_file (dev, &dev_attr_manufacturer);
- if (udev->descriptor.iProduct)
- device_create_file (dev, &dev_attr_product);
- if (udev->descriptor.iSerialNumber)
- device_create_file (dev, &dev_attr_serial);
-
- device_create_file (dev, &dev_attr_devnum);
- device_create_file (dev, &dev_attr_version);
- device_create_file (dev, &dev_attr_maxchild);
-}
-
-/* Interface fields */
-#define usb_intf_attr(field, format_string) \
-static ssize_t \
-show_##field (struct device *dev, char *buf) \
-{ \
- struct usb_interface *intf = to_usb_interface (dev); \
- \
- return sprintf (buf, format_string, intf->cur_altsetting->desc.field); \
-} \
-static DEVICE_ATTR(field, S_IRUGO, show_##field, NULL);
-
-usb_intf_attr (bInterfaceNumber, "%02x\n")
-usb_intf_attr (bAlternateSetting, "%2d\n")
-usb_intf_attr (bNumEndpoints, "%02x\n")
-usb_intf_attr (bInterfaceClass, "%02x\n")
-usb_intf_attr (bInterfaceSubClass, "%02x\n")
-usb_intf_attr (bInterfaceProtocol, "%02x\n")
-usb_intf_attr (iInterface, "%02x\n")
-
-void usb_create_driverfs_intf_files (struct usb_interface *intf)
-{
- device_create_file (&intf->dev, &dev_attr_bInterfaceNumber);
- device_create_file (&intf->dev, &dev_attr_bAlternateSetting);
- device_create_file (&intf->dev, &dev_attr_bNumEndpoints);
- device_create_file (&intf->dev, &dev_attr_bInterfaceClass);
- device_create_file (&intf->dev, &dev_attr_bInterfaceSubClass);
- device_create_file (&intf->dev, &dev_attr_bInterfaceProtocol);
- device_create_file (&intf->dev, &dev_attr_iInterface);
-}
+++ /dev/null
-/*
- * linux/fs/ext3/resize.c
- *
- * Support for resizing an ext3 filesystem while it is mounted.
- *
- * Copyright (C) 2001, 2002 Andreas Dilger <adilger@clusterfs.com>
- *
- * This could probably be made into a module, because it is not often in use.
- */
-
-#include <linux/config.h>
-
-#define EXT3FS_DEBUG
-
-#include <linux/sched.h>
-#include <linux/smp_lock.h>
-#include <linux/ext3_jbd.h>
-
-#include <linux/errno.h>
-#include <linux/slab.h>
-
-
-#define outside(b, first, last) ((b) < (first) || (b) >= (last))
-#define inside(b, first, last) ((b) >= (first) && (b) < (last))
-
-static int verify_group_input(struct super_block *sb,
- struct ext3_new_group_data *input)
-{
- struct ext3_sb_info *sbi = EXT3_SB(sb);
- struct ext3_super_block *es = sbi->s_es;
- unsigned start = le32_to_cpu(es->s_blocks_count);
- unsigned end = start + input->blocks_count;
- unsigned group = input->group;
- unsigned itend = input->inode_table + EXT3_SB(sb)->s_itb_per_group;
- unsigned overhead = ext3_bg_has_super(sb, group) ?
- (1 + ext3_bg_num_gdb(sb, group) +
- le16_to_cpu(es->s_reserved_gdt_blocks)) : 0;
- unsigned metaend = start + overhead;
- struct buffer_head *bh;
- int free_blocks_count;
- int err = -EINVAL;
-
- input->free_blocks_count = free_blocks_count =
- input->blocks_count - 2 - overhead - sbi->s_itb_per_group;
-
- if (test_opt(sb, DEBUG))
- printk("EXT3-fs: adding %s group %u: %u blocks "
- "(%d free, %u reserved)\n",
- ext3_bg_has_super(sb, input->group) ? "normal" :
- "no-super", input->group, input->blocks_count,
- free_blocks_count, input->reserved_blocks);
-
- if (group != sbi->s_groups_count)
- ext3_warning(sb, __FUNCTION__,
- "Cannot add at group %u (only %lu groups)",
- input->group, sbi->s_groups_count);
- else if ((start - le32_to_cpu(es->s_first_data_block)) %
- EXT3_BLOCKS_PER_GROUP(sb))
- ext3_warning(sb, __FUNCTION__, "Last group not full");
- else if (input->reserved_blocks > input->blocks_count / 5)
- ext3_warning(sb, __FUNCTION__, "Reserved blocks too high (%u)",
- input->reserved_blocks);
- else if (free_blocks_count < 0)
- ext3_warning(sb, __FUNCTION__, "Bad blocks count %u",
- input->blocks_count);
- else if (!(bh = sb_bread(sb, end - 1)))
- ext3_warning(sb, __FUNCTION__, "Cannot read last block (%u)",
- end - 1);
- else if (outside(input->block_bitmap, start, end))
- ext3_warning(sb, __FUNCTION__,
- "Block bitmap not in group (block %u)",
- input->block_bitmap);
- else if (outside(input->inode_bitmap, start, end))
- ext3_warning(sb, __FUNCTION__,
- "Inode bitmap not in group (block %u)",
- input->inode_bitmap);
- else if (outside(input->inode_table, start, end) ||
- outside(itend - 1, start, end))
- ext3_warning(sb, __FUNCTION__,
- "Inode table not in group (blocks %u-%u)",
- input->inode_table, itend - 1);
- else if (input->inode_bitmap == input->block_bitmap)
- ext3_warning(sb, __FUNCTION__,
- "Block bitmap same as inode bitmap (%u)",
- input->block_bitmap);
- else if (inside(input->block_bitmap, input->inode_table, itend))
- ext3_warning(sb, __FUNCTION__,
- "Block bitmap (%u) in inode table (%u-%u)",
- input->block_bitmap, input->inode_table, itend-1);
- else if (inside(input->inode_bitmap, input->inode_table, itend))
- ext3_warning(sb, __FUNCTION__,
- "Inode bitmap (%u) in inode table (%u-%u)",
- input->inode_bitmap, input->inode_table, itend-1);
- else if (inside(input->block_bitmap, start, metaend))
- ext3_warning(sb, __FUNCTION__,
- "Block bitmap (%u) in GDT table (%u-%u)",
- input->block_bitmap, start, metaend - 1);
- else if (inside(input->inode_bitmap, start, metaend))
- ext3_warning(sb, __FUNCTION__,
- "Inode bitmap (%u) in GDT table (%u-%u)",
- input->inode_bitmap, start, metaend - 1);
- else if (inside(input->inode_table, start, metaend) ||
- inside(itend - 1, start, metaend))
- ext3_warning(sb, __FUNCTION__,
- "Inode table (%u-%u) overlaps GDT table (%u-%u)",
- input->inode_table, itend - 1, start, metaend - 1);
- else {
- brelse(bh);
- err = 0;
- }
-
- return err;
-}
-
-static struct buffer_head *bclean(handle_t *handle, struct super_block *sb,
- unsigned long blk)
-{
- struct buffer_head *bh;
- int err;
-
- bh = sb_getblk(sb, blk);
- set_buffer_uptodate(bh);
- if ((err = ext3_journal_get_write_access(handle, bh))) {
- brelse(bh);
- bh = ERR_PTR(err);
- } else
- memset(bh->b_data, 0, sb->s_blocksize);
-
- return bh;
-}
-
-/*
- * To avoid calling the atomic setbit hundreds or thousands of times, we only
- * need to use it within a single byte (to ensure we get endianness right).
- * We can use memset for the rest of the bitmap as there are no other users.
- */
-static void mark_bitmap_end(int start_bit, int end_bit, char *bitmap)
-{
- int i;
-
- if (start_bit >= end_bit)
- return;
-
- ext3_debug("mark end bits +%d through +%d used\n", start_bit, end_bit);
- for (i = start_bit; i < ((start_bit + 7) & ~7UL); i++)
- ext3_set_bit(i, bitmap);
- if (i < end_bit)
- memset(bitmap + (i >> 3), 0xff, (end_bit - i) >> 3);
-}
-
-/*
- * Set up the block and inode bitmaps, and the inode table for the new group.
- * This doesn't need to be part of the main transaction, since we are only
- * changing blocks outside the actual filesystem. We still do journaling to
- * ensure the recovery is correct in case of a failure just after resize.
- * If any part of this fails, we simply abort the resize.
- *
- * We only pass inode because of the ext3 journal wrappers.
- */
-static int setup_new_group_blocks(struct super_block *sb, struct inode *inode,
- struct ext3_new_group_data *input)
-{
- struct ext3_sb_info *sbi = EXT3_SB(sb);
- unsigned long start = input->group * sbi->s_blocks_per_group +
- le32_to_cpu(sbi->s_es->s_first_data_block);
- int reserved_gdb = ext3_bg_has_super(sb, input->group) ?
- le16_to_cpu(sbi->s_es->s_reserved_gdt_blocks) : 0;
- unsigned long gdblocks = ext3_bg_num_gdb(sb, input->group);
- struct buffer_head *bh;
- handle_t *handle;
- unsigned long block;
- int bit;
- int i;
- int err = 0, err2;
-
- handle = ext3_journal_start(inode, reserved_gdb + gdblocks +
- 2 + sbi->s_itb_per_group);
- if (IS_ERR(handle))
- return PTR_ERR(handle);
-
- lock_super(sb);
- if (input->group != sbi->s_groups_count) {
- err = -EBUSY;
- goto exit_journal;
- }
-
- if (IS_ERR(bh = bclean(handle, sb, input->block_bitmap))) {
- err = PTR_ERR(bh);
- goto exit_journal;
- }
-
- if (ext3_bg_has_super(sb, input->group)) {
- ext3_debug("mark backup superblock %#04lx (+0)\n", start);
- ext3_set_bit(0, bh->b_data);
- }
-
- /* Copy all of the GDT blocks into the backup in this group */
- for (i = 0, bit = 1, block = start + 1;
- i < gdblocks; i++, block++, bit++) {
- struct buffer_head *gdb;
-
- ext3_debug("update backup group %#04lx (+%d)\n", block, bit);
-
- gdb = sb_getblk(sb, block);
- set_buffer_uptodate(gdb);
- if ((err = ext3_journal_get_write_access(handle, gdb))) {
- brelse(gdb);
- goto exit_bh;
- }
- memcpy(gdb->b_data, sbi->s_group_desc[i], bh->b_size);
- ext3_journal_dirty_metadata(handle, gdb);
- ext3_set_bit(bit, bh->b_data);
- brelse(gdb);
- }
-
- /* Zero out all of the reserved backup group descriptor table blocks */
- for (i = 0, bit = gdblocks + 1, block = start + bit;
- i < reserved_gdb; i++, block++, bit++) {
- struct buffer_head *gdb;
-
- ext3_debug("clear reserved block %#04lx (+%d)\n", block, bit);
-
- if (IS_ERR(gdb = bclean(handle, sb, block))) {
- err = PTR_ERR(bh);
- goto exit_bh;
- }
- ext3_journal_dirty_metadata(handle, gdb);
- ext3_set_bit(bit, bh->b_data);
- brelse(gdb);
- }
- ext3_debug("mark block bitmap %#04x (+%ld)\n", input->block_bitmap,
- input->block_bitmap - start);
- ext3_set_bit(input->block_bitmap - start, bh->b_data);
- ext3_debug("mark inode bitmap %#04x (+%ld)\n", input->inode_bitmap,
- input->inode_bitmap - start);
- ext3_set_bit(input->inode_bitmap - start, bh->b_data);
-
- /* Zero out all of the inode table blocks */
- for (i = 0, block = input->inode_table, bit = block - start;
- i < sbi->s_itb_per_group; i++, bit++, block++) {
- struct buffer_head *it;
-
- ext3_debug("clear inode block %#04x (+%ld)\n", block, bit);
- if (IS_ERR(it = bclean(handle, sb, block))) {
- err = PTR_ERR(it);
- goto exit_bh;
- }
- ext3_journal_dirty_metadata(handle, it);
- brelse(it);
- ext3_set_bit(bit, bh->b_data);
- }
- mark_bitmap_end(input->blocks_count, EXT3_BLOCKS_PER_GROUP(sb),
- bh->b_data);
- ext3_journal_dirty_metadata(handle, bh);
- brelse(bh);
-
- /* Mark unused entries in inode bitmap used */
- ext3_debug("clear inode bitmap %#04x (+%ld)\n",
- input->inode_bitmap, input->inode_bitmap - start);
- if (IS_ERR(bh = bclean(handle, sb, input->inode_bitmap))) {
- err = PTR_ERR(bh);
- goto exit_journal;
- }
-
- mark_bitmap_end(EXT3_INODES_PER_GROUP(sb), EXT3_BLOCKS_PER_GROUP(sb),
- bh->b_data);
- ext3_journal_dirty_metadata(handle, bh);
-exit_bh:
- brelse(bh);
-
-exit_journal:
- unlock_super(sb);
- if ((err2 = ext3_journal_stop(handle)) && !err)
- err = err2;
-
- return err;
-}
-
-/*
- * Iterate through the groups which hold BACKUP superblock/GDT copies in an
- * ext3 filesystem. The counters should be initialized to 1, 5, and 7 before
- * calling this for the first time. In a sparse filesystem it will be the
- * sequence of powers of 3, 5, and 7: 1, 3, 5, 7, 9, 25, 27, 49, 81, ...
- * For a non-sparse filesystem it will be every group: 1, 2, 3, 4, ...
- */
-unsigned ext3_list_backups(struct super_block *sb, unsigned *three,
- unsigned *five, unsigned *seven)
-{
- unsigned *min = three;
- int mult = 3;
- unsigned ret;
-
- if (!EXT3_HAS_RO_COMPAT_FEATURE(sb,
- EXT3_FEATURE_RO_COMPAT_SPARSE_SUPER)) {
- ret = *min;
- *min += 1;
- return ret;
- }
-
- if (*five < *min) {
- min = five;
- mult = 5;
- }
- if (*seven < *min) {
- min = seven;
- mult = 7;
- }
-
- ret = *min;
- *min *= mult;
-
- return ret;
-}
-
-/*
- * Check that all of the backup GDT blocks are held in the primary GDT block.
- * It is assumed that they are stored in group order. Returns the number of
- * groups in current filesystem that have BACKUPS, or -ve error code.
- */
-static int verify_reserved_gdb(struct super_block *sb,
- struct buffer_head *primary)
-{
- const unsigned long blk = primary->b_blocknr;
- const unsigned long end = EXT3_SB(sb)->s_groups_count;
- unsigned three = 1;
- unsigned five = 5;
- unsigned seven = 7;
- unsigned grp;
- __u32 *p = (__u32 *)primary->b_data;
- int gdbackups = 0;
-
- while ((grp = ext3_list_backups(sb, &three, &five, &seven)) < end) {
- if (le32_to_cpu(*p++) != grp * EXT3_BLOCKS_PER_GROUP(sb) + blk){
- ext3_warning(sb, __FUNCTION__,
- "reserved GDT %ld missing grp %d (%ld)\n",
- blk, grp,
- grp * EXT3_BLOCKS_PER_GROUP(sb) + blk);
- return -EINVAL;
- }
- if (++gdbackups > EXT3_ADDR_PER_BLOCK(sb))
- return -EFBIG;
- }
-
- return gdbackups;
-}
-
-/*
- * Called when we need to bring a reserved group descriptor table block into
- * use from the resize inode. The primary copy of the new GDT block currently
- * is an indirect block (under the double indirect block in the resize inode).
- * The new backup GDT blocks will be stored as leaf blocks in this indirect
- * block, in group order. Even though we know all the block numbers we need,
- * we check to ensure that the resize inode has actually reserved these blocks.
- *
- * Don't need to update the block bitmaps because the blocks are still in use.
- *
- * We get all of the error cases out of the way, so that we are sure to not
- * fail once we start modifying the data on disk, because JBD has no rollback.
- */
-static int add_new_gdb(handle_t *handle, struct inode *inode,
- struct ext3_new_group_data *input,
- struct buffer_head **primary)
-{
- struct super_block *sb = inode->i_sb;
- struct ext3_super_block *es = EXT3_SB(sb)->s_es;
- unsigned long gdb_num = input->group / EXT3_DESC_PER_BLOCK(sb);
- unsigned long gdb_off = input->group % EXT3_DESC_PER_BLOCK(sb);
- unsigned long gdblock = EXT3_SB(sb)->s_sbh->b_blocknr + 1 + gdb_num;
- struct buffer_head **o_group_desc, **n_group_desc;
- struct buffer_head *dind;
- int gdbackups;
- struct ext3_iloc iloc;
- __u32 *data;
- int err;
-
- if (test_opt(sb, DEBUG))
- printk("EXT3-fs: ext3_add_new_gdb: adding group block %lu\n",
- gdb_num);
-
- /*
- * If we are not using the primary superblock/GDT copy don't resize,
- * because the user tools have no way of handling this. Probably a
- * bad time to do it anyways.
- */
- if (EXT3_SB(sb)->s_sbh->b_blocknr !=
- le32_to_cpu(EXT3_SB(sb)->s_es->s_first_data_block)) {
- ext3_warning(sb, __FUNCTION__,
- "won't resize using backup superblock at %lu\n",
- EXT3_SB(sb)->s_sbh->b_blocknr);
- return -EPERM;
- }
-
- *primary = sb_bread(sb, gdblock);
- if (!*primary)
- return -EIO;
-
- if ((gdbackups = verify_reserved_gdb(sb, *primary)) < 0) {
- err = gdbackups;
- goto exit_bh;
- }
-
- data = EXT3_I(inode)->i_data + EXT3_DIND_BLOCK;
- dind = sb_bread(sb, le32_to_cpu(*data));
- if (!dind) {
- err = -EIO;
- goto exit_bh;
- }
-
- data = (__u32 *)dind->b_data;
- if (le32_to_cpu(data[gdb_num % EXT3_ADDR_PER_BLOCK(sb)]) != gdblock) {
- ext3_warning(sb, __FUNCTION__,
- "new group %u GDT block %lu not reserved\n",
- input->group, gdblock);
- err = -EINVAL;
- goto exit_dind;
- }
-
- if ((err = ext3_journal_get_write_access(handle, EXT3_SB(sb)->s_sbh)))
- goto exit_dind;
-
- if ((err = ext3_journal_get_write_access(handle, *primary)))
- goto exit_sbh;
-
- if ((err = ext3_journal_get_write_access(handle, dind)))
- goto exit_primary;
-
- /* ext3_reserve_inode_write() gets a reference on the iloc */
- if ((err = ext3_reserve_inode_write(handle, inode, &iloc)))
- goto exit_dindj;
-
- n_group_desc = (struct buffer_head **)kmalloc((gdb_num + 1) *
- sizeof(struct buffer_head *), GFP_KERNEL);
- if (!n_group_desc) {
- err = -ENOMEM;
- ext3_warning (sb, __FUNCTION__,
- "not enough memory for %lu groups", gdb_num + 1);
- goto exit_inode;
- }
-
- /*
- * Finally, we have all of the possible failures behind us...
- *
- * Remove new GDT block from inode double-indirect block and clear out
- * the new GDT block for use (which also "frees" the backup GDT blocks
- * from the reserved inode). We don't need to change the bitmaps for
- * these blocks, because they are marked as in-use from being in the
- * reserved inode, and will become GDT blocks (primary and backup).
- */
- /*
- printk("removing block %d = %ld from dindir %ld[%ld]\n",
- ((__u32 *)(dind->b_data))[gdb_off], gdblock, dind->b_blocknr,
- gdb_num); */
- data[gdb_num % EXT3_ADDR_PER_BLOCK(sb)] = 0;
- ext3_journal_dirty_metadata(handle, dind);
- brelse(dind);
- inode->i_blocks -= (gdbackups + 1) * sb->s_blocksize >> 9;
- ext3_mark_iloc_dirty(handle, inode, &iloc);
- memset((*primary)->b_data, 0, sb->s_blocksize);
- ext3_journal_dirty_metadata(handle, *primary);
-
- o_group_desc = EXT3_SB(sb)->s_group_desc;
- memcpy(n_group_desc, o_group_desc,
- EXT3_SB(sb)->s_gdb_count * sizeof(struct buffer_head *));
- n_group_desc[gdb_num] = *primary;
- EXT3_SB(sb)->s_group_desc = n_group_desc;
- EXT3_SB(sb)->s_gdb_count++;
- kfree(o_group_desc);
-
- es->s_reserved_gdt_blocks =
- cpu_to_le16(le16_to_cpu(es->s_reserved_gdt_blocks) - 1);
- ext3_journal_dirty_metadata(handle, EXT3_SB(sb)->s_sbh);
-
- return 0;
-
-exit_inode:
- //ext3_journal_release_buffer(handle, iloc.bh);
- brelse(iloc.bh);
-exit_dindj:
- //ext3_journal_release_buffer(handle, dind);
-exit_primary:
- //ext3_journal_release_buffer(handle, *primary);
-exit_sbh:
- //ext3_journal_release_buffer(handle, *primary);
-exit_dind:
- brelse(dind);
-exit_bh:
- brelse(*primary);
-
- ext3_debug("leaving with error %d\n", err);
- return err;
-}
-
-/*
- * Called when we are adding a new group which has a backup copy of each of
- * the GDT blocks (i.e. sparse group) and there are reserved GDT blocks.
- * We need to add these reserved backup GDT blocks to the resize inode, so
- * that they are kept for future resizing and not allocated to files.
- *
- * Each reserved backup GDT block will go into a different indirect block.
- * The indirect blocks are actually the primary reserved GDT blocks,
- * so we know in advance what their block numbers are. We only get the
- * double-indirect block to verify it is pointing to the primary reserved
- * GDT blocks so we don't overwrite a data block by accident. The reserved
- * backup GDT blocks are stored in their reserved primary GDT block.
- */
-static int reserve_backup_gdb(handle_t *handle, struct inode *inode,
- struct ext3_new_group_data *input)
-{
- struct super_block *sb = inode->i_sb;
- int reserved_gdb =le16_to_cpu(EXT3_SB(sb)->s_es->s_reserved_gdt_blocks);
- struct buffer_head **primary;
- struct buffer_head *dind;
- struct ext3_iloc iloc;
- unsigned long blk;
- __u32 *data, *end;
- int gdbackups = 0;
- int res, i;
- int err;
-
- primary = kmalloc(reserved_gdb * sizeof(*primary), GFP_KERNEL);
- if (!primary)
- return -ENOMEM;
-
- data = EXT3_I(inode)->i_data + EXT3_DIND_BLOCK;
- dind = sb_bread(sb, le32_to_cpu(*data));
- if (!dind) {
- err = -EIO;
- goto exit_free;
- }
-
- blk = EXT3_SB(sb)->s_sbh->b_blocknr + 1 + EXT3_SB(sb)->s_gdb_count;
- data = (__u32 *)dind->b_data + EXT3_SB(sb)->s_gdb_count;
- end = (__u32 *)dind->b_data + EXT3_ADDR_PER_BLOCK(sb);
-
- /* Get each reserved primary GDT block and verify it holds backups */
- for (res = 0; res < reserved_gdb; res++, blk++) {
- if (le32_to_cpu(*data) != blk) {
- ext3_warning(sb, __FUNCTION__,
- "reserved block %lu not at offset %ld\n",
- blk, (long)(data - (__u32 *)dind->b_data));
- err = -EINVAL;
- goto exit_bh;
- }
- primary[res] = sb_bread(sb, blk);
- if (!primary[res]) {
- err = -EIO;
- goto exit_bh;
- }
- if ((gdbackups = verify_reserved_gdb(sb, primary[res])) < 0) {
- brelse(primary[res]);
- err = gdbackups;
- goto exit_bh;
- }
- if (++data >= end)
- data = (__u32 *)dind->b_data;
- }
-
- for (i = 0; i < reserved_gdb; i++) {
- if ((err = ext3_journal_get_write_access(handle, primary[i]))) {
- /*
- int j;
- for (j = 0; j < i; j++)
- ext3_journal_release_buffer(handle, primary[j]);
- */
- goto exit_bh;
- }
- }
-
- if ((err = ext3_reserve_inode_write(handle, inode, &iloc)))
- goto exit_bh;
-
- /*
- * Finally we can add each of the reserved backup GDT blocks from
- * the new group to its reserved primary GDT block.
- */
- blk = input->group * EXT3_BLOCKS_PER_GROUP(sb);
- for (i = 0; i < reserved_gdb; i++) {
- int err2;
- data = (__u32 *)primary[i]->b_data;
- /* printk("reserving backup %lu[%u] = %lu\n",
- primary[i]->b_blocknr, gdbackups,
- blk + primary[i]->b_blocknr); */
- data[gdbackups] = cpu_to_le32(blk + primary[i]->b_blocknr);
- err2 = ext3_journal_dirty_metadata(handle, primary[i]);
- if (!err)
- err = err2;
- }
- inode->i_blocks += reserved_gdb * sb->s_blocksize >> 9;
- ext3_mark_iloc_dirty(handle, inode, &iloc);
-
-exit_bh:
- while (--res >= 0)
- brelse(primary[res]);
- brelse(dind);
-
-exit_free:
- kfree(primary);
-
- return err;
-}
-
-/*
- * Update the backup copies of the ext3 metadata. These don't need to be part
- * of the main resize transaction, because e2fsck will re-write them if there
- * is a problem (basically only OOM will cause a problem). However, we
- * _should_ update the backups if possible, in case the primary gets trashed
- * for some reason and we need to run e2fsck from a backup superblock. The
- * important part is that the new block and inode counts are in the backup
- * superblocks, and the location of the new group metadata in the GDT backups.
- *
- * We do not need lock_super() for this, because these blocks are not
- * otherwise touched by the filesystem code when it is mounted. We don't
- * need to worry about last changing from sbi->s_groups_count, because the
- * worst that can happen is that we do not copy the full number of backups
- * at this time. The resize which changed s_groups_count will backup again.
- *
- * We only pass inode because of the ext3 journal wrappers.
- */
-static void update_backups(struct super_block *sb, struct inode *inode,
- int blk_off, char *data, int size)
-{
- struct ext3_sb_info *sbi = EXT3_SB(sb);
- const unsigned long last = sbi->s_groups_count;
- const int bpg = EXT3_BLOCKS_PER_GROUP(sb);
- unsigned three = 1;
- unsigned five = 5;
- unsigned seven = 7;
- unsigned group;
- int rest = sb->s_blocksize - size;
- handle_t *handle;
- int err = 0, err2;
-
- handle = ext3_journal_start(inode, EXT3_MAX_TRANS_DATA);
- if (IS_ERR(handle)) {
- group = 1;
- err = PTR_ERR(handle);
- goto exit_err;
- }
-
- while ((group = ext3_list_backups(sb, &three, &five, &seven)) < last) {
- struct buffer_head *bh;
-
- /* Out of journal space, and can't get more - abort - so sad */
- if (handle->h_buffer_credits == 0 &&
- ext3_journal_extend(handle, EXT3_MAX_TRANS_DATA) &&
- (err = ext3_journal_restart(handle, EXT3_MAX_TRANS_DATA)))
- break;
-
- bh = sb_getblk(sb, group * bpg + blk_off);
- set_buffer_uptodate(bh);
- ext3_debug(sb, __FUNCTION__, "update metadata backup %#04lx\n",
- bh->b_blocknr);
- if ((err = ext3_journal_get_write_access(handle, bh)))
- break;
- memcpy(bh->b_data, data, size);
- if (rest)
- memset(bh->b_data + size, 0, rest);
- ext3_journal_dirty_metadata(handle, bh);
- brelse(bh);
- }
- if ((err2 = ext3_journal_stop(handle)) && !err)
- err = err2;
-
- /*
- * Ugh! Need to have e2fsck write the backup copies. It is too
- * late to revert the resize, we shouldn't fail just because of
- * the backup copies (they are only needed in case of corruption).
- *
- * However, if we got here we have a journal problem too, so we
- * can't really start a transaction to mark the superblock.
- * Chicken out and just set the flag on the hope it will be written
- * to disk, and if not - we will simply wait until next fsck.
- */
-exit_err:
- if (err) {
- ext3_warning(sb, __FUNCTION__,
- "can't update backup for group %d (err %d), "
- "forcing fsck on next reboot\n", group, err);
- sbi->s_mount_state &= ~EXT3_VALID_FS;
- sbi->s_es->s_state &= ~cpu_to_le16(EXT3_VALID_FS);
- mark_buffer_dirty(sbi->s_sbh);
- }
-}
-
-/* Add group descriptor data to an existing or new group descriptor block.
- * Ensure we handle all possible error conditions _before_ we start modifying
- * the filesystem, because we cannot abort the transaction and not have it
- * write the data to disk.
- *
- * If we are on a GDT block boundary, we need to get the reserved GDT block.
- * Otherwise, we may need to add backup GDT blocks for a sparse group.
- *
- * We only need to hold the superblock lock while we are actually adding
- * in the new group's counts to the superblock. Prior to that we have
- * not really "added" the group at all. We re-check that we are still
- * adding in the last group in case things have changed since verifying.
- */
-int ext3_group_add(struct super_block *sb, struct ext3_new_group_data *input)
-{
- struct ext3_sb_info *sbi = EXT3_SB(sb);
- struct ext3_super_block *es = sbi->s_es;
- int reserved_gdb = ext3_bg_has_super(sb, input->group) ?
- le16_to_cpu(es->s_reserved_gdt_blocks) : 0;
- struct buffer_head *primary = NULL;
- struct ext3_group_desc *gdp;
- struct inode *inode = NULL;
- struct inode bogus;
- handle_t *handle;
- int gdb_off, gdb_num;
- int err, err2;
-
- gdb_num = input->group / EXT3_DESC_PER_BLOCK(sb);
- gdb_off = input->group % EXT3_DESC_PER_BLOCK(sb);
-
- if (gdb_off == 0 && !EXT3_HAS_RO_COMPAT_FEATURE(sb,
- EXT3_FEATURE_RO_COMPAT_SPARSE_SUPER)) {
- ext3_warning(sb, __FUNCTION__,
- "Can't resize non-sparse filesystem further\n");
- return -EPERM;
- }
-
- if (reserved_gdb || gdb_off == 0) {
- if (!EXT3_HAS_COMPAT_FEATURE(sb,
- EXT3_FEATURE_COMPAT_RESIZE_INODE)){
- ext3_warning(sb, __FUNCTION__,
- "No reserved GDT blocks, can't resize\n");
- return -EPERM;
- }
- inode = iget(sb, EXT3_RESIZE_INO);
- if (!inode || is_bad_inode(inode)) {
- ext3_warning(sb, __FUNCTION__,
- "Error opening resize inode\n");
- iput(inode);
- return -ENOENT;
- }
- } else {
- /* Used only for ext3 journal wrapper functions to get sb */
- inode = &bogus;
- bogus.i_sb = sb;
- }
-
- if ((err = verify_group_input(sb, input)))
- goto exit_put;
-
- if ((err = setup_new_group_blocks(sb, inode, input)))
- goto exit_put;
-
- /*
- * We will always be modifying at least the superblock and a GDT
- * block. If we are adding a group past the last current GDT block,
- * we will also modify the inode and the dindirect block. If we
- * are adding a group with superblock/GDT backups we will also
- * modify each of the reserved GDT dindirect blocks.
- */
- handle = ext3_journal_start(inode, ext3_bg_has_super(sb, input->group) ?
- 3 + reserved_gdb : 4);
- if (IS_ERR(handle)) {
- err = PTR_ERR(handle);
- goto exit_put;
- }
-
- lock_super(sb);
- if (input->group != EXT3_SB(sb)->s_groups_count) {
- ext3_warning(sb, __FUNCTION__,
- "multiple resizers run on filesystem!\n");
- goto exit_journal;
- }
-
- if ((err = ext3_journal_get_write_access(handle, sbi->s_sbh)))
- goto exit_journal;
-
- /*
- * We will only either add reserved group blocks to a backup group
- * or remove reserved blocks for the first group in a new group block.
- * Doing both would be mean more complex code, and sane people don't
- * use non-sparse filesystems anymore. This is already checked above.
- */
- if (gdb_off) {
- primary = sbi->s_group_desc[gdb_num];
- if ((err = ext3_journal_get_write_access(handle, primary)))
- goto exit_journal;
-
- if (reserved_gdb && ext3_bg_num_gdb(sb, input->group) &&
- (err = reserve_backup_gdb(handle, inode, input)))
- goto exit_journal;
- } else if ((err = add_new_gdb(handle, inode, input, &primary)))
- goto exit_journal;
-
- /* Finally update group descriptor block for new group */
- gdp = (struct ext3_group_desc *)primary->b_data + gdb_off;
-
- gdp->bg_block_bitmap = cpu_to_le32(input->block_bitmap);
- gdp->bg_inode_bitmap = cpu_to_le32(input->inode_bitmap);
- gdp->bg_inode_table = cpu_to_le32(input->inode_table);
- gdp->bg_free_blocks_count = cpu_to_le16(input->free_blocks_count);
- gdp->bg_free_inodes_count = cpu_to_le16(EXT3_INODES_PER_GROUP(sb));
-
- EXT3_SB(sb)->s_groups_count++;
- ext3_journal_dirty_metadata(handle, primary);
-
- /* Update superblock with new block counts */
- es->s_blocks_count = cpu_to_le32(le32_to_cpu(es->s_blocks_count) +
- input->blocks_count);
- es->s_free_blocks_count =
- cpu_to_le32(le32_to_cpu(es->s_free_blocks_count) +
- input->free_blocks_count);
- es->s_r_blocks_count = cpu_to_le32(le32_to_cpu(es->s_r_blocks_count) +
- input->reserved_blocks);
- es->s_inodes_count = cpu_to_le32(le32_to_cpu(es->s_inodes_count) +
- EXT3_INODES_PER_GROUP(sb));
- es->s_free_inodes_count =
- cpu_to_le32(le32_to_cpu(es->s_free_inodes_count) +
- EXT3_INODES_PER_GROUP(sb));
- ext3_journal_dirty_metadata(handle, EXT3_SB(sb)->s_sbh);
- sb->s_dirt = 1;
-
-exit_journal:
- unlock_super(sb);
- handle->h_sync = 1;
- if ((err2 = ext3_journal_stop(handle)) && !err)
- err = err2;
- if (!err) {
- update_backups(sb, inode, sbi->s_sbh->b_blocknr, (char *)es,
- sizeof(struct ext3_super_block));
- update_backups(sb, inode, primary->b_blocknr, primary->b_data,
- primary->b_size);
- }
-exit_put:
- if (inode != &bogus)
- iput(inode);
- return err;
-} /* ext3_group_add */
-
-/* Extend the filesystem to the new number of blocks specified. This entry
- * point is only used to extend the current filesystem to the end of the last
- * existing group. It can be accessed via ioctl, or by "remount,resize=<size>"
- * for emergencies (because it has no dependencies on reserved blocks).
- *
- * If we _really_ wanted, we could use default values to call ext3_group_add()
- * allow the "remount" trick to work for arbitrary resizing, assuming enough
- * GDT blocks are reserved to grow to the desired size.
- */
-int ext3_group_extend(struct super_block *sb, struct ext3_super_block *es,
- unsigned long n_blocks_count)
-{
- unsigned long o_blocks_count;
- unsigned long o_groups_count;
- unsigned long last;
- int add;
- struct inode *inode;
- struct buffer_head * bh;
- handle_t *handle;
- int err;
-
- o_blocks_count = le32_to_cpu(es->s_blocks_count);
- o_groups_count = EXT3_SB(sb)->s_groups_count;
-
- if (test_opt(sb, DEBUG))
- printk("EXT3-fs: extending last group from %lu to %lu blocks\n",
- o_blocks_count, n_blocks_count);
-
- if (n_blocks_count == 0 || n_blocks_count == o_blocks_count)
- return 0;
-
- if (n_blocks_count < o_blocks_count) {
- ext3_warning(sb, __FUNCTION__,
- "can't shrink FS - resize aborted");
- return -EBUSY;
- }
-
- /* Handle the remaining blocks in the last group only. */
- last = (o_blocks_count - le32_to_cpu(es->s_first_data_block)) %
- EXT3_BLOCKS_PER_GROUP(sb);
-
- if (last == 0) {
- ext3_warning(sb, __FUNCTION__,
- "need to use ext2online to resize further\n");
- return -EPERM;
- }
-
- add = EXT3_BLOCKS_PER_GROUP(sb) - last;
-
- if (o_blocks_count + add > n_blocks_count)
- add = n_blocks_count - o_blocks_count;
-
- if (o_blocks_count + add < n_blocks_count)
- ext3_warning(sb, __FUNCTION__,
- "will only finish group (%lu blocks, %u new)",
- o_blocks_count + add, add);
-
- /* See if the device is actually as big as what was requested */
- bh = sb_bread(sb, o_blocks_count + add -1);
- if (!bh) {
- ext3_warning(sb, __FUNCTION__,
- "can't read last block, resize aborted");
- return -ENOSPC;
- }
- brelse(bh);
-
- /* Get a bogus inode to "free" the new blocks in this group. */
- if (!(inode = new_inode(sb))) {
- ext3_warning(sb, __FUNCTION__,
- "error getting dummy resize inode");
- return -ENOMEM;
- }
- inode->i_ino = 0;
-
- EXT3_I(inode)->i_state = EXT3_STATE_RESIZE;
-
- /* We will update the superblock, one block bitmap, and
- * one group descriptor via ext3_free_blocks().
- */
- handle = ext3_journal_start(inode, 3);
- if (IS_ERR(handle)) {
- err = PTR_ERR(handle);
- ext3_warning(sb, __FUNCTION__, "error %d on journal start",err);
- goto exit_put;
- }
-
- lock_super(sb);
- if (o_blocks_count != le32_to_cpu(es->s_blocks_count)) {
- ext3_warning(sb, __FUNCTION__,
- "multiple resizers run on filesystem!\n");
- err = -EBUSY;
- goto exit_put;
- }
-
- if ((err = ext3_journal_get_write_access(handle,
- EXT3_SB(sb)->s_sbh))) {
- ext3_warning(sb, __FUNCTION__,
- "error %d on journal write access", err);
- unlock_super(sb);
- ext3_journal_stop(handle);
- goto exit_put;
- }
- es->s_blocks_count = cpu_to_le32(o_blocks_count + add);
- ext3_journal_dirty_metadata(handle, EXT3_SB(sb)->s_sbh);
- sb->s_dirt = 1;
- unlock_super(sb);
- ext3_debug("freeing blocks %ld through %ld\n", o_blocks_count,
- o_blocks_count + add);
- ext3_free_blocks(handle, inode, o_blocks_count, add);
- ext3_debug("freed blocks %ld through %ld\n", o_blocks_count,
- o_blocks_count + add);
- if ((err = ext3_journal_stop(handle)))
- goto exit_put;
- if (test_opt(sb, DEBUG))
- printk("EXT3-fs: extended group to %u blocks\n",
- le32_to_cpu(es->s_blocks_count));
- update_backups(sb, inode, EXT3_SB(sb)->s_sbh->b_blocknr, (char *)es,
- sizeof(struct ext3_super_block));
-exit_put:
- iput(inode);
-
- return err;
-} /* ext3_group_extend */
+++ /dev/null
-#
-# Copyright (C) 2000 Jeff Dike (jdike@karaya.com)
-# Licensed under the GPL
-#
-
-# struct stat64 changed the inode field name between 2.2 and 2.4 from st_ino
-# to __st_ino. It stayed in the same place, so as long as the correct name
-# is used, hostfs compiled on 2.2 should work on 2.4 and vice versa.
-
-STAT64_INO_FIELD := $(shell grep -q __st_ino /usr/include/bits/stat.h && \
- echo __)st_ino
-
-hostfs-objs := hostfs_kern.o hostfs_user.o
-
-obj-y =
-obj-$(CONFIG_HOSTFS) += hostfs.o
-
-SINGLE_OBJS = $(foreach f,$(patsubst %.o,%,$(obj-y) $(obj-m)),$($(f)-objs))
-
-USER_OBJS := $(filter %_user.o,$(obj-y) $(obj-m) $(SINGLE_OBJS))
-USER_OBJS := $(foreach file,$(USER_OBJS),$(obj)/$(file))
-
-USER_CFLAGS += -DSTAT64_INO_FIELD=$(STAT64_INO_FIELD)
-
-$(USER_OBJS) : %.o: %.c
- $(CC) $(CFLAGS_$(notdir $@)) $(USER_CFLAGS) -c -o $@ $<
+++ /dev/null
-#ifndef __UM_FS_HOSTFS
-#define __UM_FS_HOSTFS
-
-#include "os.h"
-
-/* These are exactly the same definitions as in fs.h, but the names are
- * changed so that this file can be included in both kernel and user files.
- */
-
-#define HOSTFS_ATTR_MODE 1
-#define HOSTFS_ATTR_UID 2
-#define HOSTFS_ATTR_GID 4
-#define HOSTFS_ATTR_SIZE 8
-#define HOSTFS_ATTR_ATIME 16
-#define HOSTFS_ATTR_MTIME 32
-#define HOSTFS_ATTR_CTIME 64
-#define HOSTFS_ATTR_ATIME_SET 128
-#define HOSTFS_ATTR_MTIME_SET 256
-#define HOSTFS_ATTR_FORCE 512 /* Not a change, but a change it */
-#define HOSTFS_ATTR_ATTR_FLAG 1024
-
-struct hostfs_iattr {
- unsigned int ia_valid;
- mode_t ia_mode;
- uid_t ia_uid;
- gid_t ia_gid;
- loff_t ia_size;
- struct timespec ia_atime;
- struct timespec ia_mtime;
- struct timespec ia_ctime;
- unsigned int ia_attr_flags;
-};
-
-extern int stat_file(const char *path, unsigned long long *inode_out,
- int *mode_out, int *nlink_out, int *uid_out, int *gid_out,
- unsigned long long *size_out, struct timespec *atime_out,
- struct timespec *mtime_out, struct timespec *ctime_out,
- int *blksize_out, unsigned long long *blocks_out);
-extern int access_file(char *path, int r, int w, int x);
-extern int open_file(char *path, int r, int w, int append);
-extern int file_type(const char *path, int *rdev);
-extern void *open_dir(char *path, int *err_out);
-extern char *read_dir(void *stream, unsigned long long *pos,
- unsigned long long *ino_out, int *len_out);
-extern void close_file(void *stream);
-extern void close_dir(void *stream);
-extern int read_file(int fd, unsigned long long *offset, char *buf, int len);
-extern int write_file(int fd, unsigned long long *offset, const char *buf,
- int len);
-extern int lseek_file(int fd, long long offset, int whence);
-extern int file_create(char *name, int ur, int uw, int ux, int gr,
- int gw, int gx, int or, int ow, int ox);
-extern int set_attr(const char *file, struct hostfs_iattr *attrs);
-extern int make_symlink(const char *from, const char *to);
-extern int unlink_file(const char *file);
-extern int do_mkdir(const char *file, int mode);
-extern int do_rmdir(const char *file);
-extern int do_mknod(const char *file, int mode, int dev);
-extern int link_file(const char *from, const char *to);
-extern int do_readlink(char *file, char *buf, int size);
-extern int rename_file(char *from, char *to);
-extern int do_statfs(char *root, long *bsize_out, long long *blocks_out,
- long long *bfree_out, long long *bavail_out,
- long long *files_out, long long *ffree_out,
- void *fsid_out, int fsid_size, long *namelen_out,
- long *spare_out);
-
-#endif
-
-/*
- * Overrides for Emacs so that we follow Linus's tabbing style.
- * Emacs will notice this stuff at the end of the file and automatically
- * adjust the settings for this buffer only. This must remain at the end
- * of the file.
- * ---------------------------------------------------------------------------
- * Local variables:
- * c-file-style: "linux"
- * End:
- */
+++ /dev/null
-/*
- * Copyright (C) 2000, 2001, 2002 Jeff Dike (jdike@karaya.com)
- * Licensed under the GPL
- *
- * Ported the filesystem routines to 2.5.
- * 2003-02-10 Petr Baudis <pasky@ucw.cz>
- */
-
-#include <linux/stddef.h>
-#include <linux/fs.h>
-#include <linux/version.h>
-#include <linux/module.h>
-#include <linux/init.h>
-#include <linux/slab.h>
-#include <linux/pagemap.h>
-#include <linux/blkdev.h>
-#include <linux/list.h>
-#include <linux/buffer_head.h>
-#include <linux/root_dev.h>
-#include <linux/statfs.h>
-#include <asm/uaccess.h>
-#include "hostfs.h"
-#include "kern_util.h"
-#include "kern.h"
-#include "user_util.h"
-#include "2_5compat.h"
-#include "init.h"
-
-struct hostfs_inode_info {
- char *host_filename;
- int fd;
- int mode;
- struct inode vfs_inode;
-};
-
-static inline struct hostfs_inode_info *HOSTFS_I(struct inode *inode)
-{
- return(list_entry(inode, struct hostfs_inode_info, vfs_inode));
-}
-
-#define FILE_HOSTFS_I(file) HOSTFS_I((file)->f_dentry->d_inode)
-
-int hostfs_d_delete(struct dentry *dentry)
-{
- return(1);
-}
-
-struct dentry_operations hostfs_dentry_ops = {
- .d_delete = hostfs_d_delete,
-};
-
-/* Changed in hostfs_args before the kernel starts running */
-static char *root_ino = "/";
-static int append = 0;
-
-#define HOSTFS_SUPER_MAGIC 0x00c0ffee
-
-static struct inode_operations hostfs_iops;
-static struct inode_operations hostfs_dir_iops;
-static struct address_space_operations hostfs_link_aops;
-
-static int __init hostfs_args(char *options, int *add)
-{
- char *ptr;
-
- ptr = strchr(options, ',');
- if(ptr != NULL)
- *ptr++ = '\0';
- if(*options != '\0')
- root_ino = options;
-
- options = ptr;
- while(options){
- ptr = strchr(options, ',');
- if(ptr != NULL)
- *ptr++ = '\0';
- if(*options != '\0'){
- if(!strcmp(options, "append"))
- append = 1;
- else printf("hostfs_args - unsupported option - %s\n",
- options);
- }
- options = ptr;
- }
- return(0);
-}
-
-__uml_setup("hostfs=", hostfs_args,
-"hostfs=<root dir>,<flags>,...\n"
-" This is used to set hostfs parameters. The root directory argument\n"
-" is used to confine all hostfs mounts to within the specified directory\n"
-" tree on the host. If this isn't specified, then a user inside UML can\n"
-" mount anything on the host that's accessible to the user that's running\n"
-" it.\n"
-" The only flag currently supported is 'append', which specifies that all\n"
-" files opened by hostfs will be opened in append mode.\n\n"
-);
-
-static char *dentry_name(struct dentry *dentry, int extra)
-{
- struct dentry *parent;
- char *root, *name;
- int len;
-
- len = 0;
- parent = dentry;
- while(parent->d_parent != parent){
- len += parent->d_name.len + 1;
- parent = parent->d_parent;
- }
-
- root = HOSTFS_I(parent->d_inode)->host_filename;
- len += strlen(root);
- name = kmalloc(len + extra + 1, GFP_KERNEL);
- if(name == NULL) return(NULL);
-
- name[len] = '\0';
- parent = dentry;
- while(parent->d_parent != parent){
- len -= parent->d_name.len + 1;
- name[len] = '/';
- strncpy(&name[len + 1], parent->d_name.name,
- parent->d_name.len);
- parent = parent->d_parent;
- }
- strncpy(name, root, strlen(root));
- return(name);
-}
-
-static char *inode_name(struct inode *ino, int extra)
-{
- struct dentry *dentry;
-
- dentry = list_entry(ino->i_dentry.next, struct dentry, d_alias);
- return(dentry_name(dentry, extra));
-}
-
-static int read_name(struct inode *ino, char *name)
-{
- /* The non-int inode fields are copied into ints by stat_file and
- * then copied into the inode because passing the actual pointers
- * in and having them treated as int * breaks on big-endian machines
- */
- int err;
- int i_mode, i_nlink, i_blksize;
- unsigned long long i_size;
- unsigned long long i_ino;
- unsigned long long i_blocks;
-
- err = stat_file(name, &i_ino, &i_mode, &i_nlink, &ino->i_uid,
- &ino->i_gid, &i_size, &ino->i_atime, &ino->i_mtime,
- &ino->i_ctime, &i_blksize, &i_blocks);
- if(err)
- return(err);
-
- ino->i_ino = i_ino;
- ino->i_mode = i_mode;
- ino->i_nlink = i_nlink;
- ino->i_size = i_size;
- ino->i_blksize = i_blksize;
- ino->i_blocks = i_blocks;
- if((ino->i_sb->s_dev == ROOT_DEV) && (ino->i_uid == getuid()))
- ino->i_uid = 0;
- return(0);
-}
-
-static char *follow_link(char *link)
-{
- int len, n;
- char *name, *resolved, *end;
-
- len = 64;
- while(1){
- n = -ENOMEM;
- name = kmalloc(len, GFP_KERNEL);
- if(name == NULL)
- goto out;
-
- n = do_readlink(link, name, len);
- if(n < len)
- break;
- len *= 2;
- kfree(name);
- }
- if(n < 0)
- goto out_free;
-
- if(*name == '/')
- return(name);
-
- end = strrchr(link, '/');
- if(end == NULL)
- return(name);
-
- *(end + 1) = '\0';
- len = strlen(link) + strlen(name) + 1;
-
- resolved = kmalloc(len, GFP_KERNEL);
- if(resolved == NULL){
- n = -ENOMEM;
- goto out_free;
- }
-
- sprintf(resolved, "%s%s", link, name);
- kfree(name);
- kfree(link);
- return(resolved);
-
- out_free:
- kfree(name);
- out:
- return(ERR_PTR(n));
-}
-
-static int read_inode(struct inode *ino)
-{
- char *name;
- int err = 0;
-
- /* Unfortunately, we are called from iget() when we don't have a dentry
- * allocated yet.
- */
- if(list_empty(&ino->i_dentry))
- goto out;
-
- err = -ENOMEM;
- name = inode_name(ino, 0);
- if(name == NULL)
- goto out;
-
- if(file_type(name, NULL) == OS_TYPE_SYMLINK){
- name = follow_link(name);
- if(IS_ERR(name)){
- err = PTR_ERR(name);
- goto out;
- }
- }
-
- err = read_name(ino, name);
- kfree(name);
- out:
- return(err);
-}
-
-int hostfs_statfs(struct super_block *sb, struct kstatfs *sf)
-{
- /* do_statfs uses struct statfs64 internally, but the linux kernel
- * struct statfs still has 32-bit versions for most of these fields,
- * so we convert them here
- */
- int err;
- long long f_blocks;
- long long f_bfree;
- long long f_bavail;
- long long f_files;
- long long f_ffree;
-
- err = do_statfs(HOSTFS_I(sb->s_root->d_inode)->host_filename,
- &sf->f_bsize, &f_blocks, &f_bfree, &f_bavail, &f_files,
- &f_ffree, &sf->f_fsid, sizeof(sf->f_fsid),
- &sf->f_namelen, sf->f_spare);
- if(err) return(err);
- sf->f_blocks = f_blocks;
- sf->f_bfree = f_bfree;
- sf->f_bavail = f_bavail;
- sf->f_files = f_files;
- sf->f_ffree = f_ffree;
- sf->f_type = HOSTFS_SUPER_MAGIC;
- return(0);
-}
-
-static struct inode *hostfs_alloc_inode(struct super_block *sb)
-{
- struct hostfs_inode_info *hi;
-
- hi = kmalloc(sizeof(*hi), GFP_KERNEL);
- if(hi == NULL)
- return(NULL);
-
- *hi = ((struct hostfs_inode_info) { .host_filename = NULL,
- .fd = -1,
- .mode = 0 });
- inode_init_once(&hi->vfs_inode);
- return(&hi->vfs_inode);
-}
-
-static void hostfs_destroy_inode(struct inode *inode)
-{
- if(HOSTFS_I(inode)->host_filename)
- kfree(HOSTFS_I(inode)->host_filename);
-
- if(HOSTFS_I(inode)->fd != -1)
- close_file(&HOSTFS_I(inode)->fd);
-
- kfree(HOSTFS_I(inode));
-}
-
-static void hostfs_read_inode(struct inode *inode)
-{
- read_inode(inode);
-}
-
-static struct super_operations hostfs_sbops = {
- .alloc_inode = hostfs_alloc_inode,
- .destroy_inode = hostfs_destroy_inode,
- .read_inode = hostfs_read_inode,
- .statfs = hostfs_statfs,
-};
-
-int hostfs_readdir(struct file *file, void *ent, filldir_t filldir)
-{
- void *dir;
- char *name;
- unsigned long long next, ino;
- int error, len;
-
- name = dentry_name(file->f_dentry, 0);
- if(name == NULL) return(-ENOMEM);
- dir = open_dir(name, &error);
- kfree(name);
- if(dir == NULL) return(-error);
- next = file->f_pos;
- while((name = read_dir(dir, &next, &ino, &len)) != NULL){
- error = (*filldir)(ent, name, len, file->f_pos,
- ino, DT_UNKNOWN);
- if(error) break;
- file->f_pos = next;
- }
- close_dir(dir);
- return(0);
-}
-
-int hostfs_file_open(struct inode *ino, struct file *file)
-{
- char *name;
- int mode = 0, r = 0, w = 0, fd;
-
- mode = file->f_mode & (FMODE_READ | FMODE_WRITE);
- if((mode & HOSTFS_I(ino)->mode) == mode)
- return(0);
-
- /* The file may already have been opened, but with the wrong access,
- * so this resets things and reopens the file with the new access.
- */
- if(HOSTFS_I(ino)->fd != -1){
- close_file(&HOSTFS_I(ino)->fd);
- HOSTFS_I(ino)->fd = -1;
- }
-
- HOSTFS_I(ino)->mode |= mode;
- if(HOSTFS_I(ino)->mode & FMODE_READ)
- r = 1;
- if(HOSTFS_I(ino)->mode & FMODE_WRITE)
- w = 1;
- if(w)
- r = 1;
-
- name = dentry_name(file->f_dentry, 0);
- if(name == NULL)
- return(-ENOMEM);
-
- fd = open_file(name, r, w, append);
- kfree(name);
- if(fd < 0) return(fd);
- FILE_HOSTFS_I(file)->fd = fd;
-
- return(0);
-}
-
-int hostfs_fsync(struct file *file, struct dentry *dentry, int datasync)
-{
- return(0);
-}
-
-static struct file_operations hostfs_file_fops = {
- .llseek = generic_file_llseek,
- .read = generic_file_read,
- .write = generic_file_write,
- .mmap = generic_file_mmap,
- .open = hostfs_file_open,
- .release = NULL,
- .fsync = hostfs_fsync,
-};
-
-static struct file_operations hostfs_dir_fops = {
- .readdir = hostfs_readdir,
- .read = generic_read_dir,
-};
-
-int hostfs_writepage(struct page *page, struct writeback_control *wbc)
-{
- struct address_space *mapping = page->mapping;
- struct inode *inode = mapping->host;
- char *buffer;
- unsigned long long base;
- int count = PAGE_CACHE_SIZE;
- int end_index = inode->i_size >> PAGE_CACHE_SHIFT;
- int err;
-
- if (page->index >= end_index)
- count = inode->i_size & (PAGE_CACHE_SIZE-1);
-
- buffer = kmap(page);
- base = ((unsigned long long) page->index) << PAGE_CACHE_SHIFT;
-
- err = write_file(HOSTFS_I(inode)->fd, &base, buffer, count);
- if(err != count){
- ClearPageUptodate(page);
- goto out;
- }
-
- if (base > inode->i_size)
- inode->i_size = base;
-
- if (PageError(page))
- ClearPageError(page);
- err = 0;
-
- out:
- kunmap(page);
-
- unlock_page(page);
- return err;
-}
-
-int hostfs_readpage(struct file *file, struct page *page)
-{
- char *buffer;
- long long start;
- int err = 0;
-
- start = (long long) page->index << PAGE_CACHE_SHIFT;
- buffer = kmap(page);
- err = read_file(FILE_HOSTFS_I(file)->fd, &start, buffer,
- PAGE_CACHE_SIZE);
- if(err < 0) goto out;
-
- memset(&buffer[err], 0, PAGE_CACHE_SIZE - err);
-
- flush_dcache_page(page);
- SetPageUptodate(page);
- if (PageError(page)) ClearPageError(page);
- err = 0;
- out:
- kunmap(page);
- unlock_page(page);
- return(err);
-}
-
-int hostfs_prepare_write(struct file *file, struct page *page,
- unsigned int from, unsigned int to)
-{
- char *buffer;
- long long start, tmp;
- int err;
-
- start = (long long) page->index << PAGE_CACHE_SHIFT;
- buffer = kmap(page);
- if(from != 0){
- tmp = start;
- err = read_file(FILE_HOSTFS_I(file)->fd, &tmp, buffer,
- from);
- if(err < 0) goto out;
- }
- if(to != PAGE_CACHE_SIZE){
- start += to;
- err = read_file(FILE_HOSTFS_I(file)->fd, &start, buffer + to,
- PAGE_CACHE_SIZE - to);
- if(err < 0) goto out;
- }
- err = 0;
- out:
- kunmap(page);
- return(err);
-}
-
-int hostfs_commit_write(struct file *file, struct page *page, unsigned from,
- unsigned to)
-{
- struct address_space *mapping = page->mapping;
- struct inode *inode = mapping->host;
- char *buffer;
- long long start;
- int err = 0;
-
- start = (long long) (page->index << PAGE_CACHE_SHIFT) + from;
- buffer = kmap(page);
- err = write_file(FILE_HOSTFS_I(file)->fd, &start, buffer + from,
- to - from);
- if(err > 0) err = 0;
- if(!err && (start > inode->i_size))
- inode->i_size = start;
-
- kunmap(page);
- return(err);
-}
-
-static struct address_space_operations hostfs_aops = {
- .writepage = hostfs_writepage,
- .readpage = hostfs_readpage,
-/* .set_page_dirty = __set_page_dirty_nobuffers, */
- .prepare_write = hostfs_prepare_write,
- .commit_write = hostfs_commit_write
-};
-
-static int init_inode(struct inode *inode, struct dentry *dentry)
-{
- char *name;
- int type, err = -ENOMEM, rdev;
-
- if(dentry){
- name = dentry_name(dentry, 0);
- if(name == NULL)
- goto out;
- type = file_type(name, &rdev);
- kfree(name);
- }
- else type = OS_TYPE_DIR;
-
- err = 0;
- if(type == OS_TYPE_SYMLINK)
- inode->i_op = &page_symlink_inode_operations;
- else if(type == OS_TYPE_DIR)
- inode->i_op = &hostfs_dir_iops;
- else inode->i_op = &hostfs_iops;
-
- if(type == OS_TYPE_DIR) inode->i_fop = &hostfs_dir_fops;
- else inode->i_fop = &hostfs_file_fops;
-
- if(type == OS_TYPE_SYMLINK)
- inode->i_mapping->a_ops = &hostfs_link_aops;
- else inode->i_mapping->a_ops = &hostfs_aops;
-
- switch (type) {
- case OS_TYPE_CHARDEV:
- init_special_inode(inode, S_IFCHR, rdev);
- break;
- case OS_TYPE_BLOCKDEV:
- init_special_inode(inode, S_IFBLK, rdev);
- break;
- case OS_TYPE_FIFO:
- init_special_inode(inode, S_IFIFO, 0);
- break;
- case OS_TYPE_SOCK:
- init_special_inode(inode, S_IFSOCK, 0);
- break;
- }
- out:
- return(err);
-}
-
-int hostfs_create(struct inode *dir, struct dentry *dentry, int mode,
- struct nameidata *nd)
-{
- struct inode *inode;
- char *name;
- int error, fd;
-
- error = -ENOMEM;
- inode = iget(dir->i_sb, 0);
- if(inode == NULL) goto out;
-
- error = init_inode(inode, dentry);
- if(error)
- goto out_put;
-
- error = -ENOMEM;
- name = dentry_name(dentry, 0);
- if(name == NULL)
- goto out_put;
-
- fd = file_create(name,
- mode & S_IRUSR, mode & S_IWUSR, mode & S_IXUSR,
- mode & S_IRGRP, mode & S_IWGRP, mode & S_IXGRP,
- mode & S_IROTH, mode & S_IWOTH, mode & S_IXOTH);
- if(fd < 0)
- error = fd;
- else error = read_name(inode, name);
-
- kfree(name);
- if(error)
- goto out_put;
-
- HOSTFS_I(inode)->fd = fd;
- HOSTFS_I(inode)->mode = FMODE_READ | FMODE_WRITE;
- d_instantiate(dentry, inode);
- return(0);
-
- out_put:
- iput(inode);
- out:
- return(error);
-}
-
-struct dentry *hostfs_lookup(struct inode *ino, struct dentry *dentry,
- struct nameidata *nd)
-{
- struct inode *inode;
- char *name;
- int err;
-
- err = -ENOMEM;
- inode = iget(ino->i_sb, 0);
- if(inode == NULL)
- goto out;
-
- err = init_inode(inode, dentry);
- if(err)
- goto out_put;
-
- err = -ENOMEM;
- name = dentry_name(dentry, 0);
- if(name == NULL)
- goto out_put;
-
- err = read_name(inode, name);
- kfree(name);
- if(err == -ENOENT){
- iput(inode);
- inode = NULL;
- }
- else if(err)
- goto out_put;
-
- d_add(dentry, inode);
- dentry->d_op = &hostfs_dentry_ops;
- return(NULL);
-
- out_put:
- iput(inode);
- out:
- return(ERR_PTR(err));
-}
-
-static char *inode_dentry_name(struct inode *ino, struct dentry *dentry)
-{
- char *file;
- int len;
-
- file = inode_name(ino, dentry->d_name.len + 1);
- if(file == NULL) return(NULL);
- strcat(file, "/");
- len = strlen(file);
- strncat(file, dentry->d_name.name, dentry->d_name.len);
- file[len + dentry->d_name.len] = '\0';
- return(file);
-}
-
-int hostfs_link(struct dentry *to, struct inode *ino, struct dentry *from)
-{
- char *from_name, *to_name;
- int err;
-
- if((from_name = inode_dentry_name(ino, from)) == NULL)
- return(-ENOMEM);
- to_name = dentry_name(to, 0);
- if(to_name == NULL){
- kfree(from_name);
- return(-ENOMEM);
- }
- err = link_file(to_name, from_name);
- kfree(from_name);
- kfree(to_name);
- return(err);
-}
-
-int hostfs_unlink(struct inode *ino, struct dentry *dentry)
-{
- char *file;
- int err;
-
- if((file = inode_dentry_name(ino, dentry)) == NULL) return(-ENOMEM);
- if(append)
- return(-EPERM);
-
- err = unlink_file(file);
- kfree(file);
- return(err);
-}
-
-int hostfs_symlink(struct inode *ino, struct dentry *dentry, const char *to)
-{
- char *file;
- int err;
-
- if((file = inode_dentry_name(ino, dentry)) == NULL) return(-ENOMEM);
- err = make_symlink(file, to);
- kfree(file);
- return(err);
-}
-
-int hostfs_mkdir(struct inode *ino, struct dentry *dentry, int mode)
-{
- char *file;
- int err;
-
- if((file = inode_dentry_name(ino, dentry)) == NULL) return(-ENOMEM);
- err = do_mkdir(file, mode);
- kfree(file);
- return(err);
-}
-
-int hostfs_rmdir(struct inode *ino, struct dentry *dentry)
-{
- char *file;
- int err;
-
- if((file = inode_dentry_name(ino, dentry)) == NULL) return(-ENOMEM);
- err = do_rmdir(file);
- kfree(file);
- return(err);
-}
-
-int hostfs_mknod(struct inode *dir, struct dentry *dentry, int mode, dev_t dev)
-{
- struct inode *inode;
- char *name;
- int err = -ENOMEM;
-
- inode = iget(dir->i_sb, 0);
- if(inode == NULL)
- goto out;
-
- err = init_inode(inode, dentry);
- if(err)
- goto out_put;
-
- err = -ENOMEM;
- name = dentry_name(dentry, 0);
- if(name == NULL)
- goto out_put;
-
- init_special_inode(inode, mode, dev);
- err = do_mknod(name, mode, dev);
- if(err)
- goto out_free;
-
- err = read_name(inode, name);
- kfree(name);
- if(err)
- goto out_put;
-
- d_instantiate(dentry, inode);
- return(0);
-
- out_free:
- kfree(name);
- out_put:
- iput(inode);
- out:
- return(err);
-}
-
-int hostfs_rename(struct inode *from_ino, struct dentry *from,
- struct inode *to_ino, struct dentry *to)
-{
- char *from_name, *to_name;
- int err;
-
- if((from_name = inode_dentry_name(from_ino, from)) == NULL)
- return(-ENOMEM);
- if((to_name = inode_dentry_name(to_ino, to)) == NULL){
- kfree(from_name);
- return(-ENOMEM);
- }
- err = rename_file(from_name, to_name);
- kfree(from_name);
- kfree(to_name);
- return(err);
-}
-
-void hostfs_truncate(struct inode *ino)
-{
- not_implemented();
-}
-
-int hostfs_permission(struct inode *ino, int desired, struct nameidata *nd)
-{
- char *name;
- int r = 0, w = 0, x = 0, err;
-
- if(desired & MAY_READ) r = 1;
- if(desired & MAY_WRITE) w = 1;
- if(desired & MAY_EXEC) x = 1;
- name = inode_name(ino, 0);
- if(name == NULL) return(-ENOMEM);
- err = access_file(name, r, w, x);
- kfree(name);
- if(!err) err = vfs_permission(ino, desired);
- return(err);
-}
-
-int hostfs_setattr(struct dentry *dentry, struct iattr *attr)
-{
- struct hostfs_iattr attrs;
- char *name;
- int err;
-
- if(append)
- attr->ia_valid &= ~ATTR_SIZE;
-
- attrs.ia_valid = 0;
- if(attr->ia_valid & ATTR_MODE){
- attrs.ia_valid |= HOSTFS_ATTR_MODE;
- attrs.ia_mode = attr->ia_mode;
- }
- if(attr->ia_valid & ATTR_UID){
- if((dentry->d_inode->i_sb->s_dev == ROOT_DEV) &&
- (attr->ia_uid == 0))
- attr->ia_uid = getuid();
- attrs.ia_valid |= HOSTFS_ATTR_UID;
- attrs.ia_uid = attr->ia_uid;
- }
- if(attr->ia_valid & ATTR_GID){
- if((dentry->d_inode->i_sb->s_dev == ROOT_DEV) &&
- (attr->ia_gid == 0))
- attr->ia_gid = getuid();
- attrs.ia_valid |= HOSTFS_ATTR_GID;
- attrs.ia_gid = attr->ia_gid;
- }
- if(attr->ia_valid & ATTR_SIZE){
- attrs.ia_valid |= HOSTFS_ATTR_SIZE;
- attrs.ia_size = attr->ia_size;
- }
- if(attr->ia_valid & ATTR_ATIME){
- attrs.ia_valid |= HOSTFS_ATTR_ATIME;
- attrs.ia_atime = attr->ia_atime;
- }
- if(attr->ia_valid & ATTR_MTIME){
- attrs.ia_valid |= HOSTFS_ATTR_MTIME;
- attrs.ia_mtime = attr->ia_mtime;
- }
- if(attr->ia_valid & ATTR_CTIME){
- attrs.ia_valid |= HOSTFS_ATTR_CTIME;
- attrs.ia_ctime = attr->ia_ctime;
- }
- if(attr->ia_valid & ATTR_ATIME_SET){
- attrs.ia_valid |= HOSTFS_ATTR_ATIME_SET;
- }
- if(attr->ia_valid & ATTR_MTIME_SET){
- attrs.ia_valid |= HOSTFS_ATTR_MTIME_SET;
- }
- name = dentry_name(dentry, 0);
- if(name == NULL) return(-ENOMEM);
- err = set_attr(name, &attrs);
- kfree(name);
- if(err)
- return(err);
-
- return(inode_setattr(dentry->d_inode, attr));
-}
-
-int hostfs_getattr(struct vfsmount *mnt, struct dentry *dentry,
- struct kstat *stat)
-{
- generic_fillattr(dentry->d_inode, stat);
- return(0);
-}
-
-static struct inode_operations hostfs_iops = {
- .create = hostfs_create,
- .link = hostfs_link,
- .unlink = hostfs_unlink,
- .symlink = hostfs_symlink,
- .mkdir = hostfs_mkdir,
- .rmdir = hostfs_rmdir,
- .mknod = hostfs_mknod,
- .rename = hostfs_rename,
- .truncate = hostfs_truncate,
- .permission = hostfs_permission,
- .setattr = hostfs_setattr,
- .getattr = hostfs_getattr,
-};
-
-static struct inode_operations hostfs_dir_iops = {
- .create = hostfs_create,
- .lookup = hostfs_lookup,
- .link = hostfs_link,
- .unlink = hostfs_unlink,
- .symlink = hostfs_symlink,
- .mkdir = hostfs_mkdir,
- .rmdir = hostfs_rmdir,
- .mknod = hostfs_mknod,
- .rename = hostfs_rename,
- .truncate = hostfs_truncate,
- .permission = hostfs_permission,
- .setattr = hostfs_setattr,
- .getattr = hostfs_getattr,
-};
-
-int hostfs_link_readpage(struct file *file, struct page *page)
-{
- char *buffer, *name;
- long long start;
- int err;
-
- start = page->index << PAGE_CACHE_SHIFT;
- buffer = kmap(page);
- name = inode_name(page->mapping->host, 0);
- if(name == NULL) return(-ENOMEM);
- err = do_readlink(name, buffer, PAGE_CACHE_SIZE);
- kfree(name);
- if(err == PAGE_CACHE_SIZE)
- err = -E2BIG;
- else if(err > 0){
- flush_dcache_page(page);
- SetPageUptodate(page);
- if (PageError(page)) ClearPageError(page);
- err = 0;
- }
- kunmap(page);
- unlock_page(page);
- return(err);
-}
-
-static struct address_space_operations hostfs_link_aops = {
- .readpage = hostfs_link_readpage,
-};
-
-static int hostfs_fill_sb_common(struct super_block *sb, void *d, int silent)
-{
- struct inode *root_inode;
- char *name, *data = d;
- int err;
-
- sb->s_blocksize = 1024;
- sb->s_blocksize_bits = 10;
- sb->s_magic = HOSTFS_SUPER_MAGIC;
- sb->s_op = &hostfs_sbops;
-
- if((data == NULL) || (*data == '\0'))
- data = root_ino;
-
- err = -ENOMEM;
- name = kmalloc(strlen(data) + 1, GFP_KERNEL);
- if(name == NULL)
- goto out;
-
- strcpy(name, data);
-
- root_inode = iget(sb, 0);
- if(root_inode == NULL)
- goto out_free;
-
- err = init_inode(root_inode, NULL);
- if(err)
- goto out_put;
-
- HOSTFS_I(root_inode)->host_filename = name;
-
- err = -ENOMEM;
- sb->s_root = d_alloc_root(root_inode);
- if(sb->s_root == NULL)
- goto out_put;
-
- err = read_inode(root_inode);
- if(err)
- goto out_put;
-
- return(0);
-
- out_put:
- iput(root_inode);
- out_free:
- kfree(name);
- out:
- return(err);
-}
-
-static struct super_block *hostfs_read_sb(struct file_system_type *type,
- int flags, const char *dev_name,
- void *data)
-{
- return(get_sb_nodev(type, flags, data, hostfs_fill_sb_common));
-}
-
-static struct file_system_type hostfs_type = {
- .owner = THIS_MODULE,
- .name = "hostfs",
- .get_sb = hostfs_read_sb,
- .kill_sb = kill_anon_super,
- .fs_flags = 0,
-};
-
-static int __init init_hostfs(void)
-{
- return(register_filesystem(&hostfs_type));
-}
-
-static void __exit exit_hostfs(void)
-{
- unregister_filesystem(&hostfs_type);
-}
-
-module_init(init_hostfs)
-module_exit(exit_hostfs)
-MODULE_LICENSE("GPL");
-
-/*
- * Overrides for Emacs so that we follow Linus's tabbing style.
- * Emacs will notice this stuff at the end of the file and automatically
- * adjust the settings for this buffer only. This must remain at the end
- * of the file.
- * ---------------------------------------------------------------------------
- * Local variables:
- * c-file-style: "linux"
- * End:
- */
+++ /dev/null
-/*
- * Copyright (C) 2000 Jeff Dike (jdike@karaya.com)
- * Licensed under the GPL
- */
-
-#include <unistd.h>
-#include <stdio.h>
-#include <fcntl.h>
-#include <dirent.h>
-#include <errno.h>
-#include <utime.h>
-#include <string.h>
-#include <sys/stat.h>
-#include <sys/time.h>
-#include <sys/vfs.h>
-#include "hostfs.h"
-#include "kern_util.h"
-#include "user.h"
-
-int stat_file(const char *path, unsigned long long *inode_out, int *mode_out,
- int *nlink_out, int *uid_out, int *gid_out,
- unsigned long long *size_out, struct timespec *atime_out,
- struct timespec *mtime_out, struct timespec *ctime_out,
- int *blksize_out, unsigned long long *blocks_out)
-{
- struct stat64 buf;
-
- if(lstat64(path, &buf) < 0)
- return(-errno);
-
- /* See the Makefile for why STAT64_INO_FIELD is passed in
- * by the build
- */
- if(inode_out != NULL) *inode_out = buf.STAT64_INO_FIELD;
- if(mode_out != NULL) *mode_out = buf.st_mode;
- if(nlink_out != NULL) *nlink_out = buf.st_nlink;
- if(uid_out != NULL) *uid_out = buf.st_uid;
- if(gid_out != NULL) *gid_out = buf.st_gid;
- if(size_out != NULL) *size_out = buf.st_size;
- if(atime_out != NULL) {
- atime_out->tv_sec = buf.st_atime;
- atime_out->tv_nsec = 0;
- }
- if(mtime_out != NULL) {
- mtime_out->tv_sec = buf.st_mtime;
- mtime_out->tv_nsec = 0;
- }
- if(ctime_out != NULL) {
- ctime_out->tv_sec = buf.st_ctime;
- ctime_out->tv_nsec = 0;
- }
- if(blksize_out != NULL) *blksize_out = buf.st_blksize;
- if(blocks_out != NULL) *blocks_out = buf.st_blocks;
- return(0);
-}
-
-int file_type(const char *path, int *rdev)
-{
- struct stat64 buf;
-
- if(lstat64(path, &buf) < 0)
- return(-errno);
- if(rdev != NULL)
- *rdev = buf.st_rdev;
-
- if(S_ISDIR(buf.st_mode)) return(OS_TYPE_DIR);
- else if(S_ISLNK(buf.st_mode)) return(OS_TYPE_SYMLINK);
- else if(S_ISCHR(buf.st_mode)) return(OS_TYPE_CHARDEV);
- else if(S_ISBLK(buf.st_mode)) return(OS_TYPE_BLOCKDEV);
- else if(S_ISFIFO(buf.st_mode))return(OS_TYPE_FIFO);
- else if(S_ISSOCK(buf.st_mode))return(OS_TYPE_SOCK);
- else return(OS_TYPE_FILE);
-}
-
-int access_file(char *path, int r, int w, int x)
-{
- int mode = 0;
-
- if(r) mode = R_OK;
- if(w) mode |= W_OK;
- if(x) mode |= X_OK;
- if(access(path, mode) != 0) return(-errno);
- else return(0);
-}
-
-int open_file(char *path, int r, int w, int append)
-{
- int mode = 0, fd;
-
- if(r && !w)
- mode = O_RDONLY;
- else if(!r && w)
- mode = O_WRONLY;
- else if(r && w)
- mode = O_RDWR;
- else panic("Impossible mode in open_file");
-
- if(append)
- mode |= O_APPEND;
- fd = open64(path, mode);
- if(fd < 0) return(-errno);
- else return(fd);
-}
-
-void *open_dir(char *path, int *err_out)
-{
- DIR *dir;
-
- dir = opendir(path);
- *err_out = errno;
- if(dir == NULL) return(NULL);
- return(dir);
-}
-
-char *read_dir(void *stream, unsigned long long *pos,
- unsigned long long *ino_out, int *len_out)
-{
- DIR *dir = stream;
- struct dirent *ent;
-
- seekdir(dir, *pos);
- ent = readdir(dir);
- if(ent == NULL) return(NULL);
- *len_out = strlen(ent->d_name);
- *ino_out = ent->d_ino;
- *pos = telldir(dir);
- return(ent->d_name);
-}
-
-int read_file(int fd, unsigned long long *offset, char *buf, int len)
-{
- int n;
-
- n = pread64(fd, buf, len, *offset);
- if(n < 0) return(-errno);
- *offset += n;
- return(n);
-}
-
-int write_file(int fd, unsigned long long *offset, const char *buf, int len)
-{
- int n;
-
- n = pwrite64(fd, buf, len, *offset);
- if(n < 0) return(-errno);
- *offset += n;
- return(n);
-}
-
-int lseek_file(int fd, long long offset, int whence)
-{
- int ret;
-
- ret = lseek64(fd, offset, whence);
- if(ret < 0) return(-errno);
- return(0);
-}
-
-void close_file(void *stream)
-{
- close(*((int *) stream));
-}
-
-void close_dir(void *stream)
-{
- closedir(stream);
-}
-
-int file_create(char *name, int ur, int uw, int ux, int gr,
- int gw, int gx, int or, int ow, int ox)
-{
- int mode, fd;
-
- mode = 0;
- mode |= ur ? S_IRUSR : 0;
- mode |= uw ? S_IWUSR : 0;
- mode |= ux ? S_IXUSR : 0;
- mode |= gr ? S_IRGRP : 0;
- mode |= gw ? S_IWGRP : 0;
- mode |= gx ? S_IXGRP : 0;
- mode |= or ? S_IROTH : 0;
- mode |= ow ? S_IWOTH : 0;
- mode |= ox ? S_IXOTH : 0;
- fd = open64(name, O_CREAT | O_RDWR, mode);
- if(fd < 0)
- return(-errno);
- return(fd);
-}
-
-int set_attr(const char *file, struct hostfs_iattr *attrs)
-{
- struct utimbuf buf;
- int err, ma;
-
- if(attrs->ia_valid & HOSTFS_ATTR_MODE){
- if(chmod(file, attrs->ia_mode) != 0) return(-errno);
- }
- if(attrs->ia_valid & HOSTFS_ATTR_UID){
- if(chown(file, attrs->ia_uid, -1)) return(-errno);
- }
- if(attrs->ia_valid & HOSTFS_ATTR_GID){
- if(chown(file, -1, attrs->ia_gid)) return(-errno);
- }
- if(attrs->ia_valid & HOSTFS_ATTR_SIZE){
- if(truncate(file, attrs->ia_size)) return(-errno);
- }
- ma = HOSTFS_ATTR_ATIME_SET | HOSTFS_ATTR_MTIME_SET;
- if((attrs->ia_valid & ma) == ma){
- buf.actime = attrs->ia_atime.tv_sec;
- buf.modtime = attrs->ia_mtime.tv_sec;
- if(utime(file, &buf) != 0) return(-errno);
- }
- else {
- struct timespec ts;
-
- if(attrs->ia_valid & HOSTFS_ATTR_ATIME_SET){
- err = stat_file(file, NULL, NULL, NULL, NULL, NULL,
- NULL, NULL, &ts, NULL, NULL, NULL);
- if(err != 0)
- return(err);
- buf.actime = attrs->ia_atime.tv_sec;
- buf.modtime = ts.tv_sec;
- if(utime(file, &buf) != 0)
- return(-errno);
- }
- if(attrs->ia_valid & HOSTFS_ATTR_MTIME_SET){
- err = stat_file(file, NULL, NULL, NULL, NULL, NULL,
- NULL, &ts, NULL, NULL, NULL, NULL);
- if(err != 0)
- return(err);
- buf.actime = ts.tv_sec;
- buf.modtime = attrs->ia_mtime.tv_sec;
- if(utime(file, &buf) != 0)
- return(-errno);
- }
- }
- if(attrs->ia_valid & HOSTFS_ATTR_CTIME) ;
- if(attrs->ia_valid & (HOSTFS_ATTR_ATIME | HOSTFS_ATTR_MTIME)){
- err = stat_file(file, NULL, NULL, NULL, NULL, NULL, NULL,
- &attrs->ia_atime, &attrs->ia_mtime, NULL,
- NULL, NULL);
- if(err != 0) return(err);
- }
- return(0);
-}
-
-int make_symlink(const char *from, const char *to)
-{
- int err;
-
- err = symlink(to, from);
- if(err) return(-errno);
- return(0);
-}
-
-int unlink_file(const char *file)
-{
- int err;
-
- err = unlink(file);
- if(err) return(-errno);
- return(0);
-}
-
-int do_mkdir(const char *file, int mode)
-{
- int err;
-
- err = mkdir(file, mode);
- if(err) return(-errno);
- return(0);
-}
-
-int do_rmdir(const char *file)
-{
- int err;
-
- err = rmdir(file);
- if(err) return(-errno);
- return(0);
-}
-
-int do_mknod(const char *file, int mode, int dev)
-{
- int err;
-
- err = mknod(file, mode, dev);
- if(err) return(-errno);
- return(0);
-}
-
-int link_file(const char *to, const char *from)
-{
- int err;
-
- err = link(to, from);
- if(err) return(-errno);
- return(0);
-}
-
-int do_readlink(char *file, char *buf, int size)
-{
- int n;
-
- n = readlink(file, buf, size);
- if(n < 0)
- return(-errno);
- if(n < size)
- buf[n] = '\0';
- return(n);
-}
-
-int rename_file(char *from, char *to)
-{
- int err;
-
- err = rename(from, to);
- if(err < 0) return(-errno);
- return(0);
-}
-
-int do_statfs(char *root, long *bsize_out, long long *blocks_out,
- long long *bfree_out, long long *bavail_out,
- long long *files_out, long long *ffree_out,
- void *fsid_out, int fsid_size, long *namelen_out,
- long *spare_out)
-{
- struct statfs64 buf;
- int err;
-
- err = statfs64(root, &buf);
- if(err < 0) return(-errno);
- *bsize_out = buf.f_bsize;
- *blocks_out = buf.f_blocks;
- *bfree_out = buf.f_bfree;
- *bavail_out = buf.f_bavail;
- *files_out = buf.f_files;
- *ffree_out = buf.f_ffree;
- memcpy(fsid_out, &buf.f_fsid,
- sizeof(buf.f_fsid) > fsid_size ? fsid_size :
- sizeof(buf.f_fsid));
- *namelen_out = buf.f_namelen;
- spare_out[0] = buf.f_spare[0];
- spare_out[1] = buf.f_spare[1];
- spare_out[2] = buf.f_spare[2];
- spare_out[3] = buf.f_spare[3];
- spare_out[4] = buf.f_spare[4];
- spare_out[5] = buf.f_spare[5];
- return(0);
-}
-
-/*
- * Overrides for Emacs so that we follow Linus's tabbing style.
- * Emacs will notice this stuff at the end of the file and automatically
- * adjust the settings for this buffer only. This must remain at the end
- * of the file.
- * ---------------------------------------------------------------------------
- * Local variables:
- * c-file-style: "linux"
- * End:
- */
+++ /dev/null
-#
-# Copyright (C) 2002, 2003 Jeff Dike (jdike@karaya.com)
-# Licensed under the GPL
-#
-
-hppfs-objs := hppfs_kern.o
-
-obj-y =
-obj-$(CONFIG_HPPFS) += hppfs.o
-
-clean:
-
-modules:
-
-fastdep:
-
-dep:
-
-archmrproper: clean
+++ /dev/null
-/*
- * Copyright (C) 2002 Jeff Dike (jdike@karaya.com)
- * Licensed under the GPL
- */
-
-#include <linux/fs.h>
-#include <linux/module.h>
-#include <linux/init.h>
-#include <linux/slab.h>
-#include <linux/list.h>
-#include <linux/kernel.h>
-#include <linux/ctype.h>
-#include <linux/dcache.h>
-#include <linux/statfs.h>
-#include <asm/uaccess.h>
-#include <asm/fcntl.h>
-#include "os.h"
-
-static int init_inode(struct inode *inode, struct dentry *dentry);
-
-struct hppfs_data {
- struct list_head list;
- char contents[PAGE_SIZE - sizeof(struct list_head)];
-};
-
-struct hppfs_private {
- struct file proc_file;
- int host_fd;
- loff_t len;
- struct hppfs_data *contents;
-};
-
-struct hppfs_inode_info {
- struct dentry *proc_dentry;
- struct inode vfs_inode;
-};
-
-static inline struct hppfs_inode_info *HPPFS_I(struct inode *inode)
-{
- return(list_entry(inode, struct hppfs_inode_info, vfs_inode));
-}
-
-#define HPPFS_SUPER_MAGIC 0xb00000ee
-
-static struct super_operations hppfs_sbops;
-
-static int is_pid(struct dentry *dentry)
-{
- struct super_block *sb;
- int i;
-
- sb = dentry->d_sb;
- if((sb->s_op != &hppfs_sbops) || (dentry->d_parent != sb->s_root))
- return(0);
-
- for(i = 0; i < dentry->d_name.len; i++){
- if(!isdigit(dentry->d_name.name[i]))
- return(0);
- }
- return(1);
-}
-
-static char *dentry_name(struct dentry *dentry, int extra)
-{
- struct dentry *parent;
- char *root, *name;
- const char *seg_name;
- int len, seg_len;
-
- len = 0;
- parent = dentry;
- while(parent->d_parent != parent){
- if(is_pid(parent))
- len += strlen("pid") + 1;
- else len += parent->d_name.len + 1;
- parent = parent->d_parent;
- }
-
- root = "proc";
- len += strlen(root);
- name = kmalloc(len + extra + 1, GFP_KERNEL);
- if(name == NULL) return(NULL);
-
- name[len] = '\0';
- parent = dentry;
- while(parent->d_parent != parent){
- if(is_pid(parent)){
- seg_name = "pid";
- seg_len = strlen("pid");
- }
- else {
- seg_name = parent->d_name.name;
- seg_len = parent->d_name.len;
- }
-
- len -= seg_len + 1;
- name[len] = '/';
- strncpy(&name[len + 1], seg_name, seg_len);
- parent = parent->d_parent;
- }
- strncpy(name, root, strlen(root));
- return(name);
-}
-
-struct dentry_operations hppfs_dentry_ops = {
-};
-
-static int file_removed(struct dentry *dentry, const char *file)
-{
- char *host_file;
- int extra, fd;
-
- extra = 0;
- if(file != NULL) extra += strlen(file) + 1;
-
- host_file = dentry_name(dentry, extra + strlen("/remove"));
- if(host_file == NULL){
- printk("file_removed : allocation failed\n");
- return(-ENOMEM);
- }
-
- if(file != NULL){
- strcat(host_file, "/");
- strcat(host_file, file);
- }
- strcat(host_file, "/remove");
-
- fd = os_open_file(host_file, of_read(OPENFLAGS()), 0);
- kfree(host_file);
- if(fd > 0){
- os_close_file(fd);
- return(1);
- }
- return(0);
-}
-
-static void hppfs_read_inode(struct inode *ino)
-{
- struct inode *proc_ino;
-
- if(HPPFS_I(ino)->proc_dentry == NULL)
- return;
-
- proc_ino = HPPFS_I(ino)->proc_dentry->d_inode;
- ino->i_uid = proc_ino->i_uid;
- ino->i_gid = proc_ino->i_gid;
- ino->i_atime = proc_ino->i_atime;
- ino->i_mtime = proc_ino->i_mtime;
- ino->i_ctime = proc_ino->i_ctime;
- ino->i_ino = proc_ino->i_ino;
- ino->i_mode = proc_ino->i_mode;
- ino->i_nlink = proc_ino->i_nlink;
- ino->i_size = proc_ino->i_size;
- ino->i_blksize = proc_ino->i_blksize;
- ino->i_blocks = proc_ino->i_blocks;
-}
-
-static struct dentry *hppfs_lookup(struct inode *ino, struct dentry *dentry,
- struct nameidata *nd)
-{
- struct dentry *proc_dentry, *new, *parent;
- struct inode *inode;
- int err, deleted;
-
- deleted = file_removed(dentry, NULL);
- if(deleted < 0)
- return(ERR_PTR(deleted));
- else if(deleted)
- return(ERR_PTR(-ENOENT));
-
- err = -ENOMEM;
- parent = HPPFS_I(ino)->proc_dentry;
- down(&parent->d_inode->i_sem);
- proc_dentry = d_lookup(parent, &dentry->d_name);
- if(proc_dentry == NULL){
- proc_dentry = d_alloc(parent, &dentry->d_name);
- if(proc_dentry == NULL){
- up(&parent->d_inode->i_sem);
- goto out;
- }
- new = (*parent->d_inode->i_op->lookup)(parent->d_inode,
- proc_dentry, NULL);
- if(new){
- dput(proc_dentry);
- proc_dentry = new;
- }
- }
- up(&parent->d_inode->i_sem);
-
- if(IS_ERR(proc_dentry))
- return(proc_dentry);
-
- inode = iget(ino->i_sb, 0);
- if(inode == NULL)
- goto out_dput;
-
- err = init_inode(inode, proc_dentry);
- if(err)
- goto out_put;
-
- hppfs_read_inode(inode);
-
- d_add(dentry, inode);
- dentry->d_op = &hppfs_dentry_ops;
- return(NULL);
-
- out_put:
- iput(inode);
- out_dput:
- dput(proc_dentry);
- out:
- return(ERR_PTR(err));
-}
-
-static struct inode_operations hppfs_file_iops = {
-};
-
-static ssize_t read_proc(struct file *file, char *buf, ssize_t count,
- loff_t *ppos, int is_user)
-{
- ssize_t (*read)(struct file *, char *, size_t, loff_t *);
- ssize_t n;
-
- read = file->f_dentry->d_inode->i_fop->read;
-
- if(!is_user)
- set_fs(KERNEL_DS);
-
- n = (*read)(file, buf, count, &file->f_pos);
-
- if(!is_user)
- set_fs(USER_DS);
-
- if(ppos) *ppos = file->f_pos;
- return(n);
-}
-
-static ssize_t hppfs_read_file(int fd, char *buf, ssize_t count)
-{
- ssize_t n;
- int cur, err;
- char *new_buf;
-
- n = -ENOMEM;
- new_buf = kmalloc(PAGE_SIZE, GFP_KERNEL);
- if(new_buf == NULL){
- printk("hppfs_read_file : kmalloc failed\n");
- goto out;
- }
- n = 0;
- while(count > 0){
- cur = min_t(ssize_t, count, PAGE_SIZE);
- err = os_read_file(fd, new_buf, cur);
- if(err < 0){
- printk("hppfs_read : read failed, errno = %d\n",
- count);
- n = err;
- goto out_free;
- }
- else if(err == 0)
- break;
-
- if(copy_to_user(buf, new_buf, err)){
- n = -EFAULT;
- goto out_free;
- }
- n += err;
- count -= err;
- }
- out_free:
- kfree(new_buf);
- out:
- return(n);
-}
-
-static ssize_t hppfs_read(struct file *file, char *buf, size_t count,
- loff_t *ppos)
-{
- struct hppfs_private *hppfs = file->private_data;
- struct hppfs_data *data;
- loff_t off;
- int err;
-
- if(hppfs->contents != NULL){
- if(*ppos >= hppfs->len) return(0);
-
- data = hppfs->contents;
- off = *ppos;
- while(off >= sizeof(data->contents)){
- data = list_entry(data->list.next, struct hppfs_data,
- list);
- off -= sizeof(data->contents);
- }
-
- if(off + count > hppfs->len)
- count = hppfs->len - off;
- copy_to_user(buf, &data->contents[off], count);
- *ppos += count;
- }
- else if(hppfs->host_fd != -1){
- err = os_seek_file(hppfs->host_fd, *ppos);
- if(err){
- printk("hppfs_read : seek failed, errno = %d\n", err);
- return(err);
- }
- count = hppfs_read_file(hppfs->host_fd, buf, count);
- if(count > 0)
- *ppos += count;
- }
- else count = read_proc(&hppfs->proc_file, buf, count, ppos, 1);
-
- return(count);
-}
-
-static ssize_t hppfs_write(struct file *file, const char *buf, size_t len,
- loff_t *ppos)
-{
- struct hppfs_private *data = file->private_data;
- struct file *proc_file = &data->proc_file;
- ssize_t (*write)(struct file *, const char *, size_t, loff_t *);
- int err;
-
- write = proc_file->f_dentry->d_inode->i_fop->write;
-
- proc_file->f_pos = file->f_pos;
- err = (*write)(proc_file, buf, len, &proc_file->f_pos);
- file->f_pos = proc_file->f_pos;
-
- return(err);
-}
-
-static int open_host_sock(char *host_file, int *filter_out)
-{
- char *end;
- int fd;
-
- end = &host_file[strlen(host_file)];
- strcpy(end, "/rw");
- *filter_out = 1;
- fd = os_connect_socket(host_file);
- if(fd > 0)
- return(fd);
-
- strcpy(end, "/r");
- *filter_out = 0;
- fd = os_connect_socket(host_file);
- return(fd);
-}
-
-static void free_contents(struct hppfs_data *head)
-{
- struct hppfs_data *data;
- struct list_head *ele, *next;
-
- if(head == NULL) return;
-
- list_for_each_safe(ele, next, &head->list){
- data = list_entry(ele, struct hppfs_data, list);
- kfree(data);
- }
- kfree(head);
-}
-
-static struct hppfs_data *hppfs_get_data(int fd, int filter,
- struct file *proc_file,
- struct file *hppfs_file,
- loff_t *size_out)
-{
- struct hppfs_data *data, *new, *head;
- int n, err;
-
- err = -ENOMEM;
- data = kmalloc(sizeof(*data), GFP_KERNEL);
- if(data == NULL){
- printk("hppfs_get_data : head allocation failed\n");
- goto failed;
- }
-
- INIT_LIST_HEAD(&data->list);
-
- head = data;
- *size_out = 0;
-
- if(filter){
- while((n = read_proc(proc_file, data->contents,
- sizeof(data->contents), NULL, 0)) > 0)
- os_write_file(fd, data->contents, n);
- err = os_shutdown_socket(fd, 0, 1);
- if(err){
- printk("hppfs_get_data : failed to shut down "
- "socket\n");
- goto failed_free;
- }
- }
- while(1){
- n = os_read_file(fd, data->contents, sizeof(data->contents));
- if(n < 0){
- err = n;
- printk("hppfs_get_data : read failed, errno = %d\n",
- err);
- goto failed_free;
- }
- else if(n == 0)
- break;
-
- *size_out += n;
-
- if(n < sizeof(data->contents))
- break;
-
- new = kmalloc(sizeof(*data), GFP_KERNEL);
- if(new == 0){
- printk("hppfs_get_data : data allocation failed\n");
- err = -ENOMEM;
- goto failed_free;
- }
-
- INIT_LIST_HEAD(&new->list);
- list_add(&new->list, &data->list);
- data = new;
- }
- return(head);
-
- failed_free:
- free_contents(head);
- failed:
- return(ERR_PTR(err));
-}
-
-static struct hppfs_private *hppfs_data(void)
-{
- struct hppfs_private *data;
-
- data = kmalloc(sizeof(*data), GFP_KERNEL);
- if(data == NULL)
- return(data);
-
- *data = ((struct hppfs_private ) { .host_fd = -1,
- .len = -1,
- .contents = NULL } );
- return(data);
-}
-
-static int file_mode(int fmode)
-{
- if(fmode == (FMODE_READ | FMODE_WRITE))
- return(O_RDWR);
- if(fmode == FMODE_READ)
- return(O_RDONLY);
- if(fmode == FMODE_WRITE)
- return(O_WRONLY);
- return(0);
-}
-
-static int hppfs_open(struct inode *inode, struct file *file)
-{
- struct hppfs_private *data;
- struct dentry *proc_dentry;
- char *host_file;
- int err, fd, type, filter;
-
- err = -ENOMEM;
- data = hppfs_data();
- if(data == NULL)
- goto out;
-
- host_file = dentry_name(file->f_dentry, strlen("/rw"));
- if(host_file == NULL)
- goto out_free2;
-
- proc_dentry = HPPFS_I(inode)->proc_dentry;
-
- /* XXX This isn't closed anywhere */
- err = open_private_file(&data->proc_file, proc_dentry,
- file_mode(file->f_mode));
- if(err)
- goto out_free1;
-
- type = os_file_type(host_file);
- if(type == OS_TYPE_FILE){
- fd = os_open_file(host_file, of_read(OPENFLAGS()), 0);
- if(fd >= 0)
- data->host_fd = fd;
- else printk("hppfs_open : failed to open '%s', errno = %d\n",
- host_file, -fd);
-
- data->contents = NULL;
- }
- else if(type == OS_TYPE_DIR){
- fd = open_host_sock(host_file, &filter);
- if(fd > 0){
- data->contents = hppfs_get_data(fd, filter,
- &data->proc_file,
- file, &data->len);
- if(!IS_ERR(data->contents))
- data->host_fd = fd;
- }
- else printk("hppfs_open : failed to open a socket in "
- "'%s', errno = %d\n", host_file, -fd);
- }
- kfree(host_file);
-
- file->private_data = data;
- return(0);
-
- out_free1:
- kfree(host_file);
- out_free2:
- free_contents(data->contents);
- kfree(data);
- out:
- return(err);
-}
-
-static int hppfs_dir_open(struct inode *inode, struct file *file)
-{
- struct hppfs_private *data;
- struct dentry *proc_dentry;
- int err;
-
- err = -ENOMEM;
- data = hppfs_data();
- if(data == NULL)
- goto out;
-
- proc_dentry = HPPFS_I(inode)->proc_dentry;
- err = open_private_file(&data->proc_file, proc_dentry,
- file_mode(file->f_mode));
- if(err)
- goto out_free;
-
- file->private_data = data;
- return(0);
-
- out_free:
- kfree(data);
- out:
- return(err);
-}
-
-static loff_t hppfs_llseek(struct file *file, loff_t off, int where)
-{
- struct hppfs_private *data = file->private_data;
- struct file *proc_file = &data->proc_file;
- loff_t (*llseek)(struct file *, loff_t, int);
- loff_t ret;
-
- llseek = proc_file->f_dentry->d_inode->i_fop->llseek;
- if(llseek != NULL){
- ret = (*llseek)(proc_file, off, where);
- if(ret < 0)
- return(ret);
- }
-
- return(default_llseek(file, off, where));
-}
-
-static struct file_operations hppfs_file_fops = {
- .owner = NULL,
- .llseek = hppfs_llseek,
- .read = hppfs_read,
- .write = hppfs_write,
- .open = hppfs_open,
-};
-
-struct hppfs_dirent {
- void *vfs_dirent;
- filldir_t filldir;
- struct dentry *dentry;
-};
-
-static int hppfs_filldir(void *d, const char *name, int size,
- loff_t offset, ino_t inode, unsigned int type)
-{
- struct hppfs_dirent *dirent = d;
-
- if(file_removed(dirent->dentry, name))
- return(0);
-
- return((*dirent->filldir)(dirent->vfs_dirent, name, size, offset,
- inode, type));
-}
-
-static int hppfs_readdir(struct file *file, void *ent, filldir_t filldir)
-{
- struct hppfs_private *data = file->private_data;
- struct file *proc_file = &data->proc_file;
- int (*readdir)(struct file *, void *, filldir_t);
- struct hppfs_dirent dirent = ((struct hppfs_dirent)
- { .vfs_dirent = ent,
- .filldir = filldir,
- .dentry = file->f_dentry } );
- int err;
-
- readdir = proc_file->f_dentry->d_inode->i_fop->readdir;
-
- proc_file->f_pos = file->f_pos;
- err = (*readdir)(proc_file, &dirent, hppfs_filldir);
- file->f_pos = proc_file->f_pos;
-
- return(err);
-}
-
-static int hppfs_fsync(struct file *file, struct dentry *dentry, int datasync)
-{
- return(0);
-}
-
-static struct file_operations hppfs_dir_fops = {
- .owner = NULL,
- .readdir = hppfs_readdir,
- .open = hppfs_dir_open,
- .fsync = hppfs_fsync,
-};
-
-static int hppfs_statfs(struct super_block *sb, struct kstatfs *sf)
-{
- sf->f_blocks = 0;
- sf->f_bfree = 0;
- sf->f_bavail = 0;
- sf->f_files = 0;
- sf->f_ffree = 0;
- sf->f_type = HPPFS_SUPER_MAGIC;
- return(0);
-}
-
-static struct inode *hppfs_alloc_inode(struct super_block *sb)
-{
- struct hppfs_inode_info *hi;
-
- hi = kmalloc(sizeof(*hi), GFP_KERNEL);
- if(hi == NULL)
- return(NULL);
-
- *hi = ((struct hppfs_inode_info) { .proc_dentry = NULL });
- inode_init_once(&hi->vfs_inode);
- return(&hi->vfs_inode);
-}
-
-void hppfs_delete_inode(struct inode *ino)
-{
- clear_inode(ino);
-}
-
-static void hppfs_destroy_inode(struct inode *inode)
-{
- kfree(HPPFS_I(inode));
-}
-
-static struct super_operations hppfs_sbops = {
- .alloc_inode = hppfs_alloc_inode,
- .destroy_inode = hppfs_destroy_inode,
- .read_inode = hppfs_read_inode,
- .delete_inode = hppfs_delete_inode,
- .statfs = hppfs_statfs,
-};
-
-static int hppfs_readlink(struct dentry *dentry, char *buffer, int buflen)
-{
- struct file proc_file;
- struct dentry *proc_dentry;
- int (*readlink)(struct dentry *, char *, int);
- int err, n;
-
- proc_dentry = HPPFS_I(dentry->d_inode)->proc_dentry;
- err = open_private_file(&proc_file, proc_dentry, O_RDONLY);
- if(err)
- return(err);
-
- readlink = proc_dentry->d_inode->i_op->readlink;
- n = (*readlink)(proc_dentry, buffer, buflen);
-
- close_private_file(&proc_file);
-
- return(n);
-}
-
-static int hppfs_follow_link(struct dentry *dentry, struct nameidata *nd)
-{
- struct file proc_file;
- struct dentry *proc_dentry;
- int (*follow_link)(struct dentry *, struct nameidata *);
- int err, n;
-
- proc_dentry = HPPFS_I(dentry->d_inode)->proc_dentry;
- err = open_private_file(&proc_file, proc_dentry, O_RDONLY);
- if(err)
- return(err);
-
- follow_link = proc_dentry->d_inode->i_op->follow_link;
- n = (*follow_link)(proc_dentry, nd);
-
- close_private_file(&proc_file);
-
- return(n);
-}
-
-static struct inode_operations hppfs_dir_iops = {
- .lookup = hppfs_lookup,
-};
-
-static struct inode_operations hppfs_link_iops = {
- .readlink = hppfs_readlink,
- .follow_link = hppfs_follow_link,
-};
-
-static int init_inode(struct inode *inode, struct dentry *dentry)
-{
- if(S_ISDIR(dentry->d_inode->i_mode)){
- inode->i_op = &hppfs_dir_iops;
- inode->i_fop = &hppfs_dir_fops;
- }
- else if(S_ISLNK(dentry->d_inode->i_mode)){
- inode->i_op = &hppfs_link_iops;
- inode->i_fop = &hppfs_file_fops;
- }
- else {
- inode->i_op = &hppfs_file_iops;
- inode->i_fop = &hppfs_file_fops;
- }
-
- HPPFS_I(inode)->proc_dentry = dentry;
-
- return(0);
-}
-
-static int hppfs_fill_super(struct super_block *sb, void *d, int silent)
-{
- struct inode *root_inode;
- struct file_system_type *procfs;
- struct super_block *proc_sb;
- int err;
-
- err = -ENOENT;
- procfs = get_fs_type("proc");
- if(procfs == NULL)
- goto out;
-
- if(list_empty(&procfs->fs_supers))
- goto out;
-
- proc_sb = list_entry(procfs->fs_supers.next, struct super_block,
- s_instances);
-
- sb->s_blocksize = 1024;
- sb->s_blocksize_bits = 10;
- sb->s_magic = HPPFS_SUPER_MAGIC;
- sb->s_op = &hppfs_sbops;
-
- root_inode = iget(sb, 0);
- if(root_inode == NULL)
- goto out;
-
- err = init_inode(root_inode, proc_sb->s_root);
- if(err)
- goto out_put;
-
- err = -ENOMEM;
- sb->s_root = d_alloc_root(root_inode);
- if(sb->s_root == NULL)
- goto out_put;
-
- hppfs_read_inode(root_inode);
-
- return(0);
-
- out_put:
- iput(root_inode);
- out:
- return(err);
-}
-
-static struct super_block *hppfs_read_super(struct file_system_type *type,
- int flags, const char *dev_name,
- void *data)
-{
- return(get_sb_nodev(type, flags, data, hppfs_fill_super));
-}
-
-static struct file_system_type hppfs_type = {
- .owner = THIS_MODULE,
- .name = "hppfs",
- .get_sb = hppfs_read_super,
- .kill_sb = kill_anon_super,
- .fs_flags = 0,
-};
-
-static int __init init_hppfs(void)
-{
- return(register_filesystem(&hppfs_type));
-}
-
-static void __exit exit_hppfs(void)
-{
- unregister_filesystem(&hppfs_type);
-}
-
-module_init(init_hppfs)
-module_exit(exit_hppfs)
-MODULE_LICENSE("GPL");
-
-/*
- * Overrides for Emacs so that we follow Linus's tabbing style.
- * Emacs will notice this stuff at the end of the file and automatically
- * adjust the settings for this buffer only. This must remain at the end
- * of the file.
- * ---------------------------------------------------------------------------
- * Local variables:
- * c-file-style: "linux"
- * End:
- */
+++ /dev/null
-#
-# Makefile 1.00 Peter Braam <braam@clusterfs.com>
-#
-
-obj-$(CONFIG_INTERMEZZO_FS) += intermezzo.o
-
-intermezzo-objs := cache.o dcache.o dir.o ext_attr.o file.o fileset.o \
- inode.o journal.o journal_ext2.o journal_ext3.o \
- journal_obdfs.o journal_reiserfs.o journal_tmpfs.o journal_xfs.o \
- kml_reint.o kml_unpack.o methods.o presto.o psdev.o replicator.o \
- super.o sysctl.o upcall.o vfs.o
+++ /dev/null
-/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
- * vim:expandtab:shiftwidth=8:tabstop=8:
- *
- * Copyright (C) 2000 Stelias Computing, Inc.
- * Copyright (C) 2000 Red Hat, Inc.
- *
- * This file is part of InterMezzo, http://www.inter-mezzo.org.
- *
- * InterMezzo is free software; you can redistribute it and/or
- * modify it under the terms of version 2 of the GNU General Public
- * License as published by the Free Software Foundation.
- *
- * InterMezzo is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with InterMezzo; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- */
-
-#include <linux/module.h>
-#include <asm/bitops.h>
-#include <asm/uaccess.h>
-#include <asm/system.h>
-
-#include <linux/errno.h>
-#include <linux/fs.h>
-#include <linux/ext2_fs.h>
-#include <linux/slab.h>
-#include <linux/vmalloc.h>
-#include <linux/sched.h>
-#include <linux/stat.h>
-#include <linux/string.h>
-#include <linux/blkdev.h>
-#include <linux/init.h>
-
-#include "intermezzo_fs.h"
-#include "intermezzo_psdev.h"
-
-/*
- This file contains the routines associated with managing a
- cache of files for InterMezzo. These caches have two reqs:
- - need to be found fast so they are hashed by the device,
- with an attempt to have collision chains of length 1.
- The methods for the cache are set up in methods.
-*/
-
-extern kmem_cache_t * presto_dentry_slab;
-
-/* the intent of this hash is to have collision chains of length 1 */
-#define CACHES_BITS 8
-#define CACHES_SIZE (1 << CACHES_BITS)
-#define CACHES_MASK CACHES_SIZE - 1
-static struct list_head presto_caches[CACHES_SIZE];
-
-static inline int presto_cache_hash(struct super_block *s)
-{
- return (CACHES_MASK) & ((unsigned long)s >> L1_CACHE_SHIFT);
-}
-
-inline void presto_cache_add(struct presto_cache *cache)
-{
- list_add(&cache->cache_chain,
- &presto_caches[presto_cache_hash(cache->cache_sb)]);
-}
-
-inline void presto_cache_init_hash(void)
-{
- int i;
- for ( i = 0; i < CACHES_SIZE; i++ ) {
- INIT_LIST_HEAD(&presto_caches[i]);
- }
-}
-
-int izo_ioctl_packlen(struct izo_ioctl_data *data)
-{
- int len = sizeof(struct izo_ioctl_data);
- len += size_round(data->ioc_inllen1);
- len += size_round(data->ioc_inllen2);
- return len;
-}
-
-/* map a device to a cache */
-struct presto_cache *presto_cache_find(struct super_block *s)
-{
- struct presto_cache *cache;
- struct list_head *lh, *tmp;
-
- lh = tmp = &(presto_caches[presto_cache_hash(s)]);
- while ( (tmp = lh->next) != lh ) {
- cache = list_entry(tmp, struct presto_cache, cache_chain);
- if (cache->cache_sb == s)
- return cache;
- }
- return NULL;
-}
-
-
-/* map an inode to a cache */
-struct presto_cache *presto_get_cache(struct inode *inode)
-{
- struct presto_cache *cache;
- ENTRY;
- /* find the correct presto_cache here, based on the device */
- cache = presto_cache_find(inode->i_sb);
- if ( !cache ) {
- CERROR("WARNING: no presto cache for %s, ino %ld\n",
- inode->i_sb->s_id, inode->i_ino);
- EXIT;
- return NULL;
- }
- EXIT;
- return cache;
-}
-
-/* another debugging routine: check fs is InterMezzo fs */
-int presto_ispresto(struct inode *inode)
-{
- struct presto_cache *cache;
-
- if ( !inode )
- return 0;
- cache = presto_get_cache(inode);
- if ( !cache )
- return 0;
- return inode->i_sb == cache->cache_sb;
-}
-
-/* setup a cache structure when we need one */
-struct presto_cache *presto_cache_init(void)
-{
- struct presto_cache *cache;
-
- PRESTO_ALLOC(cache, sizeof(struct presto_cache));
- if ( cache ) {
- memset(cache, 0, sizeof(struct presto_cache));
- INIT_LIST_HEAD(&cache->cache_chain);
- INIT_LIST_HEAD(&cache->cache_fset_list);
- cache->cache_lock = SPIN_LOCK_UNLOCKED;
- cache->cache_reserved = 0;
- }
- return cache;
-}
-
-/* free a cache structure and all of the memory it is pointing to */
-inline void presto_free_cache(struct presto_cache *cache)
-{
- if (!cache)
- return;
-
- list_del(&cache->cache_chain);
- if (cache->cache_sb && cache->cache_sb->s_root &&
- presto_d2d(cache->cache_sb->s_root)) {
- kmem_cache_free(presto_dentry_slab,
- presto_d2d(cache->cache_sb->s_root));
- cache->cache_sb->s_root->d_fsdata = NULL;
- }
-
- PRESTO_FREE(cache, sizeof(struct presto_cache));
-}
-
-int presto_reserve_space(struct presto_cache *cache, loff_t req)
-{
- struct filter_fs *filter;
- loff_t avail;
- struct super_block *sb = cache->cache_sb;
- filter = cache->cache_filter;
- if (!filter ) {
- EXIT;
- return 0;
- }
- if (!filter->o_trops ) {
- EXIT;
- return 0;
- }
- if (!filter->o_trops->tr_avail ) {
- EXIT;
- return 0;
- }
-
- spin_lock(&cache->cache_lock);
- avail = filter->o_trops->tr_avail(cache, sb);
- CDEBUG(D_SUPER, "ESC::%ld +++> %ld \n", (long) cache->cache_reserved,
- (long) (cache->cache_reserved + req));
- CDEBUG(D_SUPER, "ESC::Avail::%ld \n", (long) avail);
- if (req + cache->cache_reserved > avail) {
- spin_unlock(&cache->cache_lock);
- EXIT;
- return -ENOSPC;
- }
- cache->cache_reserved += req;
- spin_unlock(&cache->cache_lock);
-
- EXIT;
- return 0;
-}
-
-void presto_release_space(struct presto_cache *cache, loff_t req)
-{
- CDEBUG(D_SUPER, "ESC::%ld ---> %ld \n", (long) cache->cache_reserved,
- (long) (cache->cache_reserved - req));
- spin_lock(&cache->cache_lock);
- cache->cache_reserved -= req;
- spin_unlock(&cache->cache_lock);
-}
+++ /dev/null
-/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
- * vim:expandtab:shiftwidth=8:tabstop=8:
- *
- * Original version: Copyright (C) 1996 P. Braam and M. Callahan
- * Rewritten for Linux 2.1. Copyright (C) 1997 Carnegie Mellon University
- * d_fsdata and NFS compatiblity fixes Copyright (C) 2001 Tacit Networks, Inc.
- *
- * This file is part of InterMezzo, http://www.inter-mezzo.org.
- *
- * InterMezzo is free software; you can redistribute it and/or
- * modify it under the terms of version 2 of the GNU General Public
- * License as published by the Free Software Foundation.
- *
- * InterMezzo is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with InterMezzo; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- *
- * Directory operations for InterMezzo filesystem
- */
-
-/* inode dentry alias list walking code adapted from linux/fs/dcache.c
- *
- * fs/dcache.c
- *
- * (C) 1997 Thomas Schoebel-Theuer,
- * with heavy changes by Linus Torvalds
- */
-
-#include <linux/types.h>
-#include <linux/kernel.h>
-#include <linux/sched.h>
-#include <linux/fs.h>
-#include <linux/stat.h>
-#include <linux/errno.h>
-#include <linux/slab.h>
-#include <asm/segment.h>
-#include <asm/uaccess.h>
-#include <linux/string.h>
-#include <linux/vmalloc.h>
-
-#include "intermezzo_fs.h"
-
-kmem_cache_t * presto_dentry_slab;
-
-/* called when a cache lookup succeeds */
-static int presto_d_revalidate(struct dentry *de, struct nameidata *nd)
-{
- struct inode *inode = de->d_inode;
- struct presto_file_set * root_fset;
-
- ENTRY;
- if (!inode) {
- EXIT;
- return 0;
- }
-
- if (is_bad_inode(inode)) {
- EXIT;
- return 0;
- }
-
- if (!presto_d2d(de)) {
- presto_set_dd(de);
- }
-
- if (!presto_d2d(de)) {
- EXIT;
- return 0;
- }
-
- root_fset = presto_d2d(de->d_inode->i_sb->s_root)->dd_fset;
- if (root_fset->fset_flags & FSET_FLAT_BRANCH &&
- (presto_d2d(de)->dd_fset != root_fset )) {
- presto_d2d(de)->dd_fset = root_fset;
- }
-
- EXIT;
- return 1;
-
-#if 0
- /* The following is needed for metadata on demand. */
- if ( S_ISDIR(inode->i_mode) ) {
- EXIT;
- return (presto_chk(de, PRESTO_DATA) &&
- (presto_chk(de, PRESTO_ATTR)));
- } else {
- EXIT;
- return presto_chk(de, PRESTO_ATTR);
- }
-#endif
-}
-
-static void presto_d_release(struct dentry *dentry)
-{
- if (!presto_d2d(dentry)) {
- /* This can happen for dentries from NFSd */
- return;
- }
- presto_d2d(dentry)->dd_count--;
-
- if (!presto_d2d(dentry)->dd_count) {
- kmem_cache_free(presto_dentry_slab, presto_d2d(dentry));
- dentry->d_fsdata = NULL;
- }
-}
-
-struct dentry_operations presto_dentry_ops =
-{
- .d_revalidate = presto_d_revalidate,
- .d_release = presto_d_release
-};
-
-static inline int presto_is_dentry_ROOT (struct dentry *dentry)
-{
- return(dentry_name_cmp(dentry,"ROOT") &&
- !dentry_name_cmp(dentry->d_parent,".intermezzo"));
-}
-
-static struct presto_file_set* presto_try_find_fset(struct dentry* dentry,
- int *is_under_d_intermezzo)
-{
- struct dentry* temp_dentry;
- struct presto_dentry_data *d_data;
- int found_root=0;
-
- ENTRY;
- CDEBUG(D_FSDATA, "finding fileset for %p:%s\n", dentry,
- dentry->d_name.name);
-
- *is_under_d_intermezzo = 0;
-
- /* walk up through the branch to get the fileset */
- /* The dentry we are passed presumably does not have the correct
- * fset information. However, we still want to start walking up
- * the branch from this dentry to get our found_root and
- * is_under_d_intermezzo decisions correct
- */
- for (temp_dentry = dentry ; ; temp_dentry = temp_dentry->d_parent) {
- CDEBUG(D_FSDATA, "--->dentry %p:%*s\n", temp_dentry,
- temp_dentry->d_name.len,temp_dentry->d_name.name);
- if (presto_is_dentry_ROOT(temp_dentry))
- found_root = 1;
- if (!found_root &&
- dentry_name_cmp(temp_dentry, ".intermezzo")) {
- *is_under_d_intermezzo = 1;
- }
- d_data = presto_d2d(temp_dentry);
- if (d_data) {
- /* If we found a "ROOT" dentry while walking up the
- * branch, we will journal regardless of whether
- * we are under .intermezzo or not.
- * If we are already under d_intermezzo don't reverse
- * the decision here...even if we found a "ROOT"
- * dentry above .intermezzo (if we were ever to
- * modify the directory structure).
- */
- if (!*is_under_d_intermezzo)
- *is_under_d_intermezzo = !found_root &&
- (d_data->dd_flags & PRESTO_DONT_JOURNAL);
- EXIT;
- return d_data->dd_fset;
- }
- if (temp_dentry->d_parent == temp_dentry) {
- break;
- }
- }
- EXIT;
- return NULL;
-}
-
-/* Only call this function on positive dentries */
-static struct presto_dentry_data* presto_try_find_alias_with_dd (
- struct dentry* dentry)
-{
- struct inode *inode=dentry->d_inode;
- struct list_head *head, *next, *tmp;
- struct dentry *tmp_dentry;
-
- /* Search through the alias list for dentries with d_fsdata */
- spin_lock(&dcache_lock);
- head = &inode->i_dentry;
- next = inode->i_dentry.next;
- while (next != head) {
- tmp = next;
- next = tmp->next;
- tmp_dentry = list_entry(tmp, struct dentry, d_alias);
- if (!presto_d2d(tmp_dentry)) {
- spin_unlock(&dcache_lock);
- return presto_d2d(tmp_dentry);
- }
- }
- spin_unlock(&dcache_lock);
- return NULL;
-}
-
-/* Only call this function on positive dentries */
-static void presto_set_alias_dd (struct dentry *dentry,
- struct presto_dentry_data* dd)
-{
- struct inode *inode=dentry->d_inode;
- struct list_head *head, *next, *tmp;
- struct dentry *tmp_dentry;
-
- /* Set d_fsdata for this dentry */
- dd->dd_count++;
- dentry->d_fsdata = dd;
-
- /* Now set d_fsdata for all dentries in the alias list. */
- spin_lock(&dcache_lock);
- head = &inode->i_dentry;
- next = inode->i_dentry.next;
- while (next != head) {
- tmp = next;
- next = tmp->next;
- tmp_dentry = list_entry(tmp, struct dentry, d_alias);
- if (!presto_d2d(tmp_dentry)) {
- dd->dd_count++;
- tmp_dentry->d_fsdata = dd;
- }
- }
- spin_unlock(&dcache_lock);
- return;
-}
-
-inline struct presto_dentry_data *izo_alloc_ddata(void)
-{
- struct presto_dentry_data *dd;
-
- dd = kmem_cache_alloc(presto_dentry_slab, SLAB_KERNEL);
- if (dd == NULL) {
- CERROR("IZO: out of memory trying to allocate presto_dentry_data\n");
- return NULL;
- }
- memset(dd, 0, sizeof(*dd));
- dd->dd_count = 1;
-
- return dd;
-}
-
-/* This uses the BKL! */
-int presto_set_dd(struct dentry * dentry)
-{
- struct presto_file_set *fset;
- struct presto_dentry_data *dd;
- int is_under_d_izo;
- int error=0;
-
- ENTRY;
-
- if (!dentry)
- BUG();
-
- lock_kernel();
-
- /* Did we lose a race? */
- if (dentry->d_fsdata) {
- CERROR("dentry %p already has d_fsdata set\n", dentry);
- if (dentry->d_inode)
- CERROR(" inode: %ld\n", dentry->d_inode->i_ino);
- EXIT;
- goto out_unlock;
- }
-
- if (dentry->d_inode != NULL) {
- /* NFSd runs find_fh_dentry which instantiates disconnected
- * dentries which are then connected without a lookup().
- * So it is possible to have connected dentries that do not
- * have d_fsdata set. So we walk the list trying to find
- * an alias which has its d_fsdata set and then use that
- * for all the other dentries as well.
- * - SHP,Vinny.
- */
-
- /* If there is an alias with d_fsdata use it. */
- if ((dd = presto_try_find_alias_with_dd (dentry))) {
- presto_set_alias_dd (dentry, dd);
- EXIT;
- goto out_unlock;
- }
- } else {
- /* Negative dentry */
- CDEBUG(D_FSDATA,"negative dentry %p: %*s\n", dentry,
- dentry->d_name.len, dentry->d_name.name);
- }
-
- /* No pre-existing d_fsdata, we need to construct one.
- * First, we must walk up the tree to find the fileset
- * If a fileset can't be found, we leave a null fsdata
- * and return EROFS to indicate that we can't journal
- * updates.
- */
- fset = presto_try_find_fset (dentry, &is_under_d_izo);
- if (!fset) {
-#ifdef PRESTO_NO_NFS
- CERROR("No fileset for dentry %p: %*s\n", dentry,
- dentry->d_name.len, dentry->d_name.name);
-#endif
- error = -EROFS;
- EXIT;
- goto out_unlock;
- }
-
- dentry->d_fsdata = izo_alloc_ddata();
- if (!presto_d2d(dentry)) {
- CERROR ("InterMezzo: out of memory allocating d_fsdata\n");
- error = -ENOMEM;
- goto out_unlock;
- }
- presto_d2d(dentry)->dd_fset = fset;
- if (is_under_d_izo)
- presto_d2d(dentry)->dd_flags |= PRESTO_DONT_JOURNAL;
- EXIT;
-
-out_unlock:
- CDEBUG(D_FSDATA,"presto_set_dd dentry %p: %*s, d_fsdata %p\n",
- dentry, dentry->d_name.len, dentry->d_name.name,
- dentry->d_fsdata);
- unlock_kernel();
- return error;
-}
-
-int presto_init_ddata_cache(void)
-{
- ENTRY;
- presto_dentry_slab =
- kmem_cache_create("presto_cache",
- sizeof(struct presto_dentry_data), 0,
- SLAB_HWCACHE_ALIGN, NULL,
- NULL);
- EXIT;
- return (presto_dentry_slab != NULL);
-}
-
-void presto_cleanup_ddata_cache(void)
-{
- kmem_cache_destroy(presto_dentry_slab);
-}
+++ /dev/null
-/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
- * vim:expandtab:shiftwidth=8:tabstop=8:
- *
- * Copyright (C) 2000 Stelias Computing, Inc.
- * Copyright (C) 2000 Red Hat, Inc.
- * Copyright (C) 2000 Tacitus Systems
- * Copyright (C) 2000 Peter J. Braam
- *
- * This file is part of InterMezzo, http://www.inter-mezzo.org.
- *
- * InterMezzo is free software; you can redistribute it and/or
- * modify it under the terms of version 2 of the GNU General Public
- * License as published by the Free Software Foundation.
- *
- * InterMezzo is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with InterMezzo; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- */
-
-#include <asm/bitops.h>
-#include <asm/termios.h>
-#include <asm/uaccess.h>
-#include <asm/system.h>
-
-#include <linux/errno.h>
-#include <linux/fs.h>
-#include <linux/namei.h>
-#include <linux/ext2_fs.h>
-#include <linux/slab.h>
-#include <linux/vmalloc.h>
-#include <linux/sched.h>
-#include <linux/stat.h>
-#include <linux/string.h>
-#include <linux/blkdev.h>
-#include <linux/init.h>
-#include <linux/module.h>
-
-#include "intermezzo_fs.h"
-#include "intermezzo_psdev.h"
-
-static inline void presto_relock_sem(struct inode *dir)
-{
- /* the lock from sys_mkdir / lookup_create */
- down(&dir->i_sem);
- /* the rest is done by the do_{create,mkdir, ...} */
-}
-
-static inline void presto_relock_other(struct inode *dir)
-{
- /* vfs_mkdir locks */
- // down(&dir->i_zombie);
- //lock_kernel();
-}
-
-static inline void presto_fulllock(struct inode *dir)
-{
- /* the lock from sys_mkdir / lookup_create */
- down(&dir->i_sem);
- /* vfs_mkdir locks */
- // down(&dir->i_zombie);
- //lock_kernel();
-}
-
-static inline void presto_unlock(struct inode *dir)
-{
- /* vfs_mkdir locks */
- //unlock_kernel();
- // up(&dir->i_zombie);
- /* the lock from sys_mkdir / lookup_create */
- up(&dir->i_sem);
-}
-
-
-/*
- * these are initialized in super.c
- */
-extern int presto_permission(struct inode *inode, int mask, struct nameidata *nd);
-static int izo_authorized_uid;
-
-int izo_dentry_is_ilookup(struct dentry *dentry, ino_t *id,
- unsigned int *generation)
-{
- char tmpname[64];
- char *next;
-
- ENTRY;
- /* prefix is 7 characters: '...ino:' */
- if ( dentry->d_name.len < 7 || dentry->d_name.len > 64 ||
- memcmp(dentry->d_name.name, PRESTO_ILOOKUP_MAGIC, 7) != 0 ) {
- EXIT;
- return 0;
- }
-
- memcpy(tmpname, dentry->d_name.name + 7, dentry->d_name.len - 7);
- *(tmpname + dentry->d_name.len - 7) = '\0';
-
- /* name is of the form ...ino:<inode number>:<generation> */
- *id = simple_strtoul(tmpname, &next, 16);
- if ( *next == PRESTO_ILOOKUP_SEP ) {
- *generation = simple_strtoul(next + 1, 0, 16);
- CDEBUG(D_INODE, "ino string: %s, Id = %lx (%lu), "
- "generation %x (%d)\n",
- tmpname, *id, *id, *generation, *generation);
- EXIT;
- return 1;
- } else {
- EXIT;
- return 0;
- }
-}
-
-struct dentry *presto_tmpfs_ilookup(struct inode *dir,
- struct dentry *dentry,
- ino_t ino,
- unsigned int generation)
-{
- return dentry;
-}
-
-
-inline int presto_can_ilookup(void)
-{
- return (current->euid == izo_authorized_uid ||
- capable(CAP_DAC_READ_SEARCH));
-}
-
-struct dentry *presto_iget_ilookup(struct inode *dir,
- struct dentry *dentry,
- ino_t ino,
- unsigned int generation)
-{
- struct inode *inode;
- int error;
-
- ENTRY;
-
- if ( !presto_can_ilookup() ) {
- CERROR("ilookup denied: euid %u, authorized_uid %u\n",
- current->euid, izo_authorized_uid);
- return ERR_PTR(-EPERM);
- }
- error = -ENOENT;
- inode = iget(dir->i_sb, ino);
- if (!inode) {
- CERROR("fatal: NULL inode ino %lu\n", ino);
- goto cleanup_iput;
- }
- if (is_bad_inode(inode) || inode->i_nlink == 0) {
- CERROR("fatal: bad inode ino %lu, links %d\n", ino, inode->i_nlink);
- goto cleanup_iput;
- }
- if (inode->i_generation != generation) {
- CERROR("fatal: bad generation %u (want %u)\n",
- inode->i_generation, generation);
- goto cleanup_iput;
- }
-
- d_instantiate(dentry, inode);
- dentry->d_flags |= DCACHE_DISCONNECTED; /* NFS hack */
-
- EXIT;
- return NULL;
-
-cleanup_iput:
- if (inode)
- iput(inode);
- return ERR_PTR(error);
-}
-
-struct dentry *presto_add_ilookup_dentry(struct dentry *parent,
- struct dentry *real)
-{
- struct inode *inode = real->d_inode;
- struct dentry *de;
- char buf[32];
- char *ptr = buf;
- struct dentry *inodir;
- struct presto_dentry_data *dd;
-
- inodir = lookup_one_len("..iopen..", parent, strlen("..iopen.."));
- if (!inodir || IS_ERR(inodir) || !inodir->d_inode ) {
- CERROR("%s: bad ..iopen.. lookup\n", __FUNCTION__);
- return NULL;
- }
- inodir->d_inode->i_op = &presto_dir_iops;
-
- snprintf(ptr, 32, "...ino:%lx:%x", inode->i_ino, inode->i_generation);
-
- de = lookup_one_len(ptr, inodir, strlen(ptr));
- if (!de || IS_ERR(de)) {
- CERROR("%s: bad ...ino lookup %ld\n",
- __FUNCTION__, PTR_ERR(de));
- dput(inodir);
- return NULL;
- }
-
- dd = presto_d2d(real);
- if (!dd)
- BUG();
-
- /* already exists */
- if (de->d_inode)
- BUG();
-#if 0
- if (de->d_inode != inode ) {
- CERROR("XX de->d_inode %ld, inode %ld\n",
- de->d_inode->i_ino, inode->i_ino);
- BUG();
- }
- if (dd->dd_inodentry) {
- CERROR("inodentry exists %ld \n", inode->i_ino);
- BUG();
- }
- dput(inodir);
- return de;
- }
-#endif
-
- if (presto_d2d(de))
- BUG();
-
- atomic_inc(&inode->i_count);
- de->d_op = &presto_dentry_ops;
- d_add(de, inode);
- if (!de->d_op)
- CERROR("DD: no ops dentry %p, dd %p\n", de, dd);
- dd->dd_inodentry = de;
- dd->dd_count++;
- de->d_fsdata = dd;
-
- dput(inodir);
- return de;
-}
-
-struct dentry *presto_lookup(struct inode * dir, struct dentry *dentry, struct nameidata *nd)
-{
- int rc = 0;
- struct dentry *de;
- struct presto_cache *cache;
- int minor;
- ino_t ino;
- unsigned int generation;
- struct inode_operations *iops;
- int is_ilookup = 0;
-
- ENTRY;
- cache = presto_get_cache(dir);
- if (cache == NULL) {
- CERROR("InterMezzo BUG: no cache in presto_lookup "
- "(dir ino: %ld)!\n", dir->i_ino);
- EXIT;
- return NULL;
- }
- minor = presto_c2m(cache);
-
- iops = filter_c2cdiops(cache->cache_filter);
- if (!iops || !iops->lookup) {
- CERROR("InterMezzo BUG: filesystem has no lookup\n");
- EXIT;
- return NULL;
- }
-
-
- CDEBUG(D_CACHE, "dentry %p, dir ino: %ld, name: %*s, islento: %d\n",
- dentry, dir->i_ino, dentry->d_name.len, dentry->d_name.name,
- ISLENTO(minor));
-
- if (dentry->d_fsdata)
- CERROR("DD -- BAD dentry %p has data\n", dentry);
-
- dentry->d_fsdata = NULL;
-#if 0
- if (ext2_check_for_iopen(dir, dentry))
- de = NULL;
- else {
-#endif
- if ( izo_dentry_is_ilookup(dentry, &ino, &generation) ) {
- de = cache->cache_filter->o_trops->tr_ilookup
- (dir, dentry, ino, generation);
- is_ilookup = 1;
- } else
- de = iops->lookup(dir, dentry, nd);
-#if 0
- }
-#endif
-
- if ( IS_ERR(de) ) {
- CERROR("dentry lookup error %ld\n", PTR_ERR(de));
- return de;
- }
-
- /* some file systems have no read_inode: set methods here */
- if (dentry->d_inode)
- presto_set_ops(dentry->d_inode, cache->cache_filter);
-
- filter_setup_dentry_ops(cache->cache_filter,
- dentry->d_op, &presto_dentry_ops);
- dentry->d_op = filter_c2udops(cache->cache_filter);
-
- /* In lookup we will tolerate EROFS return codes from presto_set_dd
- * to placate NFS. EROFS indicates that a fileset was not found but
- * we should still be able to continue through a lookup.
- * Anything else is a hard error and must be returned to VFS. */
- if (!is_ilookup)
- rc = presto_set_dd(dentry);
- if (rc && rc != -EROFS) {
- CERROR("presto_set_dd failed (dir %ld, name %*s): %d\n",
- dir->i_ino, dentry->d_name.len, dentry->d_name.name, rc);
- return ERR_PTR(rc);
- }
-
- EXIT;
- return NULL;
-}
-
-static inline int presto_check_set_fsdata (struct dentry *de)
-{
- if (presto_d2d(de) == NULL) {
-#ifdef PRESTO_NO_NFS
- CERROR("dentry without fsdata: %p: %*s\n", de,
- de->d_name.len, de->d_name.name);
- BUG();
-#endif
- return presto_set_dd (de);
- }
-
- return 0;
-}
-
-int presto_setattr(struct dentry *de, struct iattr *iattr)
-{
- int error;
- struct presto_cache *cache;
- struct presto_file_set *fset;
- struct lento_vfs_context info = { 0, {0}, 0 };
-
- ENTRY;
-
- error = presto_prep(de, &cache, &fset);
- if ( error ) {
- EXIT;
- return error;
- }
-
- if (!iattr->ia_valid)
- CDEBUG(D_INODE, "presto_setattr: iattr is not valid\n");
-
- CDEBUG(D_INODE, "valid %#x, mode %#o, uid %u, gid %u, size %Lu, "
- "atime %lu mtime %lu ctime %lu flags %d\n",
- iattr->ia_valid, iattr->ia_mode, iattr->ia_uid, iattr->ia_gid,
- iattr->ia_size, iattr->ia_atime.tv_sec, iattr->ia_mtime.tv_sec,
- iattr->ia_ctime.tv_sec, iattr->ia_attr_flags);
-
- if ( presto_get_permit(de->d_inode) < 0 ) {
- EXIT;
- return -EROFS;
- }
-
- if (!ISLENTO(presto_c2m(cache)))
- info.flags = LENTO_FL_KML;
- info.flags |= LENTO_FL_IGNORE_TIME;
- error = presto_do_setattr(fset, de, iattr, &info);
- presto_put_permit(de->d_inode);
- return error;
-}
-
-/*
- * Now the meat: the fs operations that require journaling
- *
- *
- * XXX: some of these need modifications for hierarchical filesets
- */
-
-int presto_prep(struct dentry *dentry, struct presto_cache **cache,
- struct presto_file_set **fset)
-{
- int rc;
-
- /* NFS might pass us dentries which have not gone through lookup.
- * Test and set d_fsdata for such dentries
- */
- rc = presto_check_set_fsdata (dentry);
- if (rc) return rc;
-
- *fset = presto_fset(dentry);
- if ( *fset == NULL ) {
- CERROR("No file set for dentry at %p: %*s\n", dentry,
- dentry->d_name.len, dentry->d_name.name);
- return -EROFS;
- }
-
- *cache = (*fset)->fset_cache;
- if ( *cache == NULL ) {
- CERROR("PRESTO: BAD, BAD: cannot find cache\n");
- return -EBADF;
- }
-
- CDEBUG(D_PIOCTL, "---> cache flags %x, fset flags %x\n",
- (*cache)->cache_flags, (*fset)->fset_flags);
- if( presto_is_read_only(*fset) ) {
- CERROR("PRESTO: cannot modify read-only fileset, minor %d.\n",
- presto_c2m(*cache));
- return -EROFS;
- }
- return 0;
-}
-
-static int presto_create(struct inode * dir, struct dentry * dentry, int mode,
- struct nameidata *nd)
-{
- int error;
- struct presto_cache *cache;
- struct dentry *parent = dentry->d_parent;
- struct lento_vfs_context info;
- struct presto_file_set *fset;
-
- ENTRY;
- error = presto_check_set_fsdata(dentry);
- if ( error ) {
- EXIT;
- return error;
- }
-
- error = presto_prep(dentry->d_parent, &cache, &fset);
- if ( error ) {
- EXIT;
- return error;
- }
- presto_unlock(dir);
-
- /* Does blocking and non-blocking behavious need to be
- checked for. Without blocking (return 1), the permit
- was acquired without reintegration
- */
- if ( presto_get_permit(dir) < 0 ) {
- EXIT;
- presto_fulllock(dir);
- return -EROFS;
- }
-
- presto_relock_sem(dir);
- parent = dentry->d_parent;
- memset(&info, 0, sizeof(info));
- if (!ISLENTO(presto_c2m(cache)))
- info.flags = LENTO_FL_KML;
- info.flags |= LENTO_FL_IGNORE_TIME;
- error = presto_do_create(fset, parent, dentry, mode, &info);
-
- presto_relock_other(dir);
- presto_put_permit(dir);
- EXIT;
- return error;
-}
-
-static int presto_link(struct dentry *old_dentry, struct inode *dir,
- struct dentry *new_dentry)
-{
- int error;
- struct presto_cache *cache, *new_cache;
- struct presto_file_set *fset, *new_fset;
- struct dentry *parent = new_dentry->d_parent;
- struct lento_vfs_context info;
-
- ENTRY;
- error = presto_prep(old_dentry, &cache, &fset);
- if ( error ) {
- EXIT;
- return error;
- }
-
- error = presto_check_set_fsdata(new_dentry);
- if ( error ) {
- EXIT;
- return error;
- }
-
- error = presto_prep(new_dentry->d_parent, &new_cache, &new_fset);
- if ( error ) {
- EXIT;
- return error;
- }
-
- if (fset != new_fset) {
- EXIT;
- return -EXDEV;
- }
-
- presto_unlock(dir);
- if ( presto_get_permit(old_dentry->d_inode) < 0 ) {
- EXIT;
- presto_fulllock(dir);
- return -EROFS;
- }
-
- if ( presto_get_permit(dir) < 0 ) {
- EXIT;
- presto_fulllock(dir);
- return -EROFS;
- }
-
- presto_relock_sem(dir);
- parent = new_dentry->d_parent;
-
- memset(&info, 0, sizeof(info));
- if (!ISLENTO(presto_c2m(cache)))
- info.flags = LENTO_FL_KML;
- info.flags |= LENTO_FL_IGNORE_TIME;
- error = presto_do_link(fset, old_dentry, parent,
- new_dentry, &info);
-
-#if 0
- /* XXX for links this is not right */
- if (cache->cache_filter->o_trops->tr_add_ilookup ) {
- struct dentry *d;
- d = cache->cache_filter->o_trops->tr_add_ilookup
- (dir->i_sb->s_root, new_dentry, 1);
- }
-#endif
-
- presto_relock_other(dir);
- presto_put_permit(dir);
- presto_put_permit(old_dentry->d_inode);
- return error;
-}
-
-static int presto_mkdir(struct inode * dir, struct dentry * dentry, int mode)
-{
- int error;
- struct presto_file_set *fset;
- struct presto_cache *cache;
- struct dentry *parent = dentry->d_parent;
- struct lento_vfs_context info;
-
- ENTRY;
-
- error = presto_check_set_fsdata(dentry);
- if ( error ) {
- EXIT;
- return error;
- }
-
- error = presto_prep(dentry->d_parent, &cache, &fset);
- if ( error ) {
- EXIT;
- return error;
- }
-
- presto_unlock(dir);
-
- if ( presto_get_permit(dir) < 0 ) {
- EXIT;
- presto_fulllock(dir);
- return -EROFS;
- }
-
- memset(&info, 0, sizeof(info));
- if (!ISLENTO(presto_c2m(cache)))
- info.flags = LENTO_FL_KML;
- info.flags |= LENTO_FL_IGNORE_TIME;
-
- presto_relock_sem(dir);
- parent = dentry->d_parent;
- error = presto_do_mkdir(fset, parent, dentry, mode, &info);
- presto_relock_other(dir);
- presto_put_permit(dir);
- return error;
-}
-
-
-
-static int presto_symlink(struct inode *dir, struct dentry *dentry,
- const char *name)
-{
- int error;
- struct presto_cache *cache;
- struct presto_file_set *fset;
- struct dentry *parent = dentry->d_parent;
- struct lento_vfs_context info;
-
- ENTRY;
- error = presto_check_set_fsdata(dentry);
- if ( error ) {
- EXIT;
- return error;
- }
-
- error = presto_prep(dentry->d_parent, &cache, &fset);
- if ( error ) {
- EXIT;
- return error;
- }
-
- presto_unlock(dir);
- if ( presto_get_permit(dir) < 0 ) {
- EXIT;
- presto_fulllock(dir);
- return -EROFS;
- }
-
- presto_relock_sem(dir);
- parent = dentry->d_parent;
- memset(&info, 0, sizeof(info));
- if (!ISLENTO(presto_c2m(cache)))
- info.flags = LENTO_FL_KML;
- info.flags |= LENTO_FL_IGNORE_TIME;
- error = presto_do_symlink(fset, parent, dentry, name, &info);
- presto_relock_other(dir);
- presto_put_permit(dir);
- return error;
-}
-
-int presto_unlink(struct inode *dir, struct dentry *dentry)
-{
- int error;
- struct presto_cache *cache;
- struct presto_file_set *fset;
- struct dentry *parent = dentry->d_parent;
- struct lento_vfs_context info;
-
- ENTRY;
- error = presto_check_set_fsdata(dentry);
- if ( error ) {
- EXIT;
- return error;
- }
-
- error = presto_prep(dentry->d_parent, &cache, &fset);
- if ( error ) {
- EXIT;
- return error;
- }
-
- presto_unlock(dir);
- if ( presto_get_permit(dir) < 0 ) {
- EXIT;
- presto_fulllock(dir);
- return -EROFS;
- }
-
- presto_relock_sem(dir);
- parent = dentry->d_parent;
- memset(&info, 0, sizeof(info));
- if (!ISLENTO(presto_c2m(cache)))
- info.flags = LENTO_FL_KML;
- info.flags |= LENTO_FL_IGNORE_TIME;
-
- error = presto_do_unlink(fset, parent, dentry, &info);
-
- presto_relock_other(dir);
- presto_put_permit(dir);
- return error;
-}
-
-static int presto_rmdir(struct inode *dir, struct dentry *dentry)
-{
- int error;
- struct presto_cache *cache;
- struct presto_file_set *fset;
- struct dentry *parent = dentry->d_parent;
- struct lento_vfs_context info;
-
- ENTRY;
- CDEBUG(D_FILE, "prepping presto\n");
- error = presto_check_set_fsdata(dentry);
-
- if ( error ) {
- EXIT;
- return error;
- }
-
- error = presto_prep(dentry->d_parent, &cache, &fset);
- if ( error ) {
- EXIT;
- return error;
- }
-
- CDEBUG(D_FILE, "unlocking\n");
- /* We need to dget() before the dput in double_unlock, to ensure we
- * still have dentry references. double_lock doesn't do dget for us.
- */
- if (d_unhashed(dentry))
- d_rehash(dentry);
- // double_up(&dir->i_zombie, &dentry->d_inode->i_zombie);
- up(&dentry->d_inode->i_sem);
- up(&dir->i_sem);
-
- CDEBUG(D_FILE, "getting permit\n");
- if ( presto_get_permit(parent->d_inode) < 0 ) {
- EXIT;
- down(&dir->i_sem);
- down(&dentry->d_inode->i_sem);
- // double_down(&dir->i_sem, &dentry->d_inode->i_sem);
- // double_down(&dir->i_zombie, &dentry->d_inode->i_zombie);
-
- lock_kernel();
- return -EROFS;
- }
- CDEBUG(D_FILE, "locking\n");
-
- down(&dir->i_sem);
- down(&dentry->d_inode->i_sem);
- parent = dentry->d_parent;
- memset(&info, 0, sizeof(info));
- if (!ISLENTO(presto_c2m(cache)))
- info.flags = LENTO_FL_KML;
- info.flags |= LENTO_FL_IGNORE_TIME;
- error = presto_do_rmdir(fset, parent, dentry, &info);
- presto_put_permit(parent->d_inode);
- lock_kernel();
- EXIT;
- return error;
-}
-
-static int presto_mknod(struct inode * dir, struct dentry * dentry, int mode, dev_t rdev)
-{
- int error;
- struct presto_cache *cache;
- struct presto_file_set *fset;
- struct dentry *parent = dentry->d_parent;
- struct lento_vfs_context info;
-
- if (!old_valid_dev(rdev))
- return -EINVAL;
-
- ENTRY;
- error = presto_check_set_fsdata(dentry);
- if ( error ) {
- EXIT;
- return error;
- }
-
- error = presto_prep(dentry->d_parent, &cache, &fset);
- if ( error ) {
- EXIT;
- return error;
- }
-
- presto_unlock(dir);
- if ( presto_get_permit(dir) < 0 ) {
- EXIT;
- presto_fulllock(dir);
- return -EROFS;
- }
-
- presto_relock_sem(dir);
- parent = dentry->d_parent;
- memset(&info, 0, sizeof(info));
- if (!ISLENTO(presto_c2m(cache)))
- info.flags = LENTO_FL_KML;
- info.flags |= LENTO_FL_IGNORE_TIME;
- error = presto_do_mknod(fset, parent, dentry, mode, rdev, &info);
- presto_relock_other(dir);
- presto_put_permit(dir);
- EXIT;
- return error;
-}
-
-
-
-// XXX this can be optimized: renamtes across filesets only require
-// multiple KML records, but can locally be executed normally.
-int presto_rename(struct inode *old_dir, struct dentry *old_dentry,
- struct inode *new_dir, struct dentry *new_dentry)
-{
- int error;
- struct presto_cache *cache, *new_cache;
- struct presto_file_set *fset, *new_fset;
- struct lento_vfs_context info;
- struct dentry *old_parent = old_dentry->d_parent;
- struct dentry *new_parent = new_dentry->d_parent;
- int triple;
-
- ENTRY;
- error = presto_prep(old_dentry, &cache, &fset);
- if ( error ) {
- EXIT;
- return error;
- }
- error = presto_prep(new_parent, &new_cache, &new_fset);
- if ( error ) {
- EXIT;
- return error;
- }
-
- if ( fset != new_fset ) {
- EXIT;
- return -EXDEV;
- }
-
- /* We need to do dget before the dput in double_unlock, to ensure we
- * still have dentry references. double_lock doesn't do dget for us.
- */
-
- triple = (S_ISDIR(old_dentry->d_inode->i_mode) && new_dentry->d_inode)?
- 1:0;
-
- unlock_rename(new_dentry->d_parent, old_dentry->d_parent);
-
- if ( presto_get_permit(old_dir) < 0 ) {
- EXIT;
- return -EROFS;
- }
- if ( presto_get_permit(new_dir) < 0 ) {
- EXIT;
- return -EROFS;
- }
-
- lock_rename(new_dentry->d_parent, old_dentry->d_parent);
- memset(&info, 0, sizeof(info));
- if (!ISLENTO(presto_c2m(cache)))
- info.flags = LENTO_FL_KML;
- info.flags |= LENTO_FL_IGNORE_TIME;
- error = do_rename(fset, old_parent, old_dentry, new_parent,
- new_dentry, &info);
-
- presto_put_permit(new_dir);
- presto_put_permit(old_dir);
- return error;
-}
-
-/* basically this allows the ilookup processes access to all files for
- * reading, while not making ilookup totally insecure. This could all
- * go away if we could set the CAP_DAC_READ_SEARCH capability for the client.
- */
-/* If posix acls are available, the underlying cache fs will export the
- * appropriate permission function. Thus we do not worry here about ACLs
- * or EAs. -SHP
- */
-int presto_permission(struct inode *inode, int mask, struct nameidata *nd)
-{
- unsigned short mode = inode->i_mode;
- struct presto_cache *cache;
- int rc;
-
- ENTRY;
- if ( presto_can_ilookup() && !(mask & S_IWOTH)) {
- CDEBUG(D_CACHE, "ilookup on %ld OK\n", inode->i_ino);
- EXIT;
- return 0;
- }
-
- cache = presto_get_cache(inode);
-
- if ( cache ) {
- /* we only override the file/dir permission operations */
- struct inode_operations *fiops = filter_c2cfiops(cache->cache_filter);
- struct inode_operations *diops = filter_c2cdiops(cache->cache_filter);
-
- if ( S_ISREG(mode) && fiops && fiops->permission ) {
- EXIT;
- return fiops->permission(inode, mask, nd);
- }
- if ( S_ISDIR(mode) && diops && diops->permission ) {
- EXIT;
- return diops->permission(inode, mask, nd);
- }
- }
-
- /* The cache filesystem doesn't have its own permission function,
- * so we call the default one.
- */
- rc = vfs_permission(inode, mask);
-
- EXIT;
- return rc;
-}
-
-
-int presto_ioctl(struct inode *inode, struct file *file,
- unsigned int cmd, unsigned long arg)
-{
- char buf[1024];
- struct izo_ioctl_data *data = NULL;
- struct presto_dentry_data *dd;
- int rc;
-
- ENTRY;
-
- /* Try the filesystem's ioctl first, and return if it succeeded. */
- dd = presto_d2d(file->f_dentry);
- if (dd && dd->dd_fset) {
- int (*cache_ioctl)(struct inode *, struct file *, unsigned int, unsigned long ) = filter_c2cdfops(dd->dd_fset->fset_cache->cache_filter)->ioctl;
- rc = -ENOTTY;
- if (cache_ioctl)
- rc = cache_ioctl(inode, file, cmd, arg);
- if (rc != -ENOTTY) {
- EXIT;
- return rc;
- }
- }
-
- if (current->euid != 0 && current->euid != izo_authorized_uid) {
- EXIT;
- return -EPERM;
- }
-
- memset(buf, 0, sizeof(buf));
-
- if (izo_ioctl_getdata(buf, buf + 1024, (void *)arg)) {
- CERROR("intermezzo ioctl: data error\n");
- return -EINVAL;
- }
- data = (struct izo_ioctl_data *)buf;
-
- switch(cmd) {
- case IZO_IOC_REINTKML: {
- int rc;
- int cperr;
- rc = kml_reint_rec(file, data);
-
- EXIT;
- cperr = copy_to_user((char *)arg, data, sizeof(*data));
- if (cperr) {
- CERROR("WARNING: cperr %d\n", cperr);
- rc = -EFAULT;
- }
- return rc;
- }
-
- case IZO_IOC_GET_RCVD: {
- struct izo_rcvd_rec rec;
- struct presto_file_set *fset;
- int rc;
-
- fset = presto_fset(file->f_dentry);
- if (fset == NULL) {
- EXIT;
- return -ENODEV;
- }
- rc = izo_rcvd_get(&rec, fset, data->ioc_uuid);
- if (rc < 0) {
- EXIT;
- return rc;
- }
-
- EXIT;
- return copy_to_user((char *)arg, &rec, sizeof(rec))? -EFAULT : 0;
- }
-
- case IZO_IOC_REPSTATUS: {
- __u64 client_kmlsize;
- struct izo_rcvd_rec *lr_client;
- struct izo_rcvd_rec rec;
- struct presto_file_set *fset;
- int minor;
- int rc;
-
- fset = presto_fset(file->f_dentry);
- if (fset == NULL) {
- EXIT;
- return -ENODEV;
- }
- minor = presto_f2m(fset);
-
- client_kmlsize = data->ioc_kmlsize;
- lr_client = (struct izo_rcvd_rec *) data->ioc_pbuf1;
-
- rc = izo_repstatus(fset, client_kmlsize,
- lr_client, &rec);
- if (rc < 0) {
- EXIT;
- return rc;
- }
-
- EXIT;
- return copy_to_user((char *)arg, &rec, sizeof(rec))? -EFAULT : 0;
- }
-
- case IZO_IOC_GET_CHANNEL: {
- struct presto_file_set *fset;
-
- fset = presto_fset(file->f_dentry);
- if (fset == NULL) {
- EXIT;
- return -ENODEV;
- }
-
- data->ioc_dev = fset->fset_cache->cache_psdev->uc_minor;
- CDEBUG(D_PSDEV, "CHANNEL %d\n", data->ioc_dev);
- EXIT;
- return copy_to_user((char *)arg, data, sizeof(*data))? -EFAULT : 0;
- }
-
- case IZO_IOC_SET_IOCTL_UID:
- izo_authorized_uid = data->ioc_uid;
- EXIT;
- return 0;
-
- case IZO_IOC_SET_PID:
- rc = izo_psdev_setpid(data->ioc_dev);
- EXIT;
- return rc;
-
- case IZO_IOC_SET_CHANNEL:
- rc = izo_psdev_setchannel(file, data->ioc_dev);
- EXIT;
- return rc;
-
- case IZO_IOC_GET_KML_SIZE: {
- struct presto_file_set *fset;
- __u64 kmlsize;
-
- fset = presto_fset(file->f_dentry);
- if (fset == NULL) {
- EXIT;
- return -ENODEV;
- }
-
- kmlsize = presto_kml_offset(fset) + fset->fset_kml_logical_off;
-
- EXIT;
- return copy_to_user((char *)arg, &kmlsize, sizeof(kmlsize))?-EFAULT : 0;
- }
-
- case IZO_IOC_PURGE_FILE_DATA: {
- struct presto_file_set *fset;
-
- fset = presto_fset(file->f_dentry);
- if (fset == NULL) {
- EXIT;
- return -ENODEV;
- }
-
- rc = izo_purge_file(fset, data->ioc_inlbuf1);
- EXIT;
- return rc;
- }
-
- case IZO_IOC_GET_FILEID: {
- rc = izo_get_fileid(file, data);
- EXIT;
- if (rc)
- return rc;
- return copy_to_user((char *)arg, data, sizeof(*data))? -EFAULT : 0;
- }
-
- case IZO_IOC_SET_FILEID: {
- rc = izo_set_fileid(file, data);
- EXIT;
- if (rc)
- return rc;
- return copy_to_user((char *)arg, data, sizeof(*data))? -EFAULT : 0;
- }
-
- case IZO_IOC_ADJUST_LML: {
- struct lento_vfs_context *info;
- info = (struct lento_vfs_context *)data->ioc_inlbuf1;
- rc = presto_adjust_lml(file, info);
- EXIT;
- return rc;
- }
-
- case IZO_IOC_CONNECT: {
- struct presto_file_set *fset;
- int minor;
-
- fset = presto_fset(file->f_dentry);
- if (fset == NULL) {
- EXIT;
- return -ENODEV;
- }
- minor = presto_f2m(fset);
-
- rc = izo_upc_connect(minor, data->ioc_ino,
- data->ioc_generation, data->ioc_uuid,
- data->ioc_flags);
- EXIT;
- return rc;
- }
-
- case IZO_IOC_GO_FETCH_KML: {
- struct presto_file_set *fset;
- int minor;
-
- fset = presto_fset(file->f_dentry);
- if (fset == NULL) {
- EXIT;
- return -ENODEV;
- }
- minor = presto_f2m(fset);
-
- rc = izo_upc_go_fetch_kml(minor, fset->fset_name,
- data->ioc_uuid, data->ioc_kmlsize);
- EXIT;
- return rc;
- }
-
- case IZO_IOC_REVOKE_PERMIT:
- if (data->ioc_flags)
- rc = izo_revoke_permit(file->f_dentry, data->ioc_uuid);
- else
- rc = izo_revoke_permit(file->f_dentry, NULL);
- EXIT;
- return rc;
-
- case IZO_IOC_CLEAR_FSET:
- rc = izo_clear_fsetroot(file->f_dentry);
- EXIT;
- return rc;
-
- case IZO_IOC_CLEAR_ALL_FSETS: {
- struct presto_file_set *fset;
-
- fset = presto_fset(file->f_dentry);
- if (fset == NULL) {
- EXIT;
- return -ENODEV;
- }
-
- rc = izo_clear_all_fsetroots(fset->fset_cache);
- EXIT;
- return rc;
- }
-
- case IZO_IOC_SET_FSET:
- /*
- * Mark this dentry as being a fileset root.
- */
- rc = presto_set_fsetroot_from_ioc(file->f_dentry,
- data->ioc_inlbuf1,
- data->ioc_flags);
- EXIT;
- return rc;
-
-
- case IZO_IOC_MARK: {
- int res = 0; /* resulting flags - returned to user */
- int error;
-
- CDEBUG(D_DOWNCALL, "mark inode: %ld, and: %x, or: %x, what %d\n",
- file->f_dentry->d_inode->i_ino, data->ioc_and_flag,
- data->ioc_or_flag, data->ioc_mark_what);
-
- switch (data->ioc_mark_what) {
- case MARK_DENTRY:
- error = izo_mark_dentry(file->f_dentry,
- data->ioc_and_flag,
- data->ioc_or_flag, &res);
- break;
- case MARK_FSET:
- error = izo_mark_fset(file->f_dentry,
- data->ioc_and_flag,
- data->ioc_or_flag, &res);
- break;
- case MARK_CACHE:
- error = izo_mark_cache(file->f_dentry,
- data->ioc_and_flag,
- data->ioc_or_flag, &res);
- break;
- case MARK_GETFL: {
- int fflags, cflags;
- data->ioc_and_flag = 0xffffffff;
- data->ioc_or_flag = 0;
- error = izo_mark_dentry(file->f_dentry,
- data->ioc_and_flag,
- data->ioc_or_flag, &res);
- if (error)
- break;
- error = izo_mark_fset(file->f_dentry,
- data->ioc_and_flag,
- data->ioc_or_flag, &fflags);
- if (error)
- break;
- error = izo_mark_cache(file->f_dentry,
- data->ioc_and_flag,
- data->ioc_or_flag,
- &cflags);
-
- if (error)
- break;
- data->ioc_and_flag = fflags;
- data->ioc_or_flag = cflags;
- break;
- }
- default:
- error = -EINVAL;
- }
-
- if (error) {
- EXIT;
- return error;
- }
- data->ioc_mark_what = res;
- CDEBUG(D_DOWNCALL, "mark inode: %ld, and: %x, or: %x, what %x\n",
- file->f_dentry->d_inode->i_ino, data->ioc_and_flag,
- data->ioc_or_flag, data->ioc_mark_what);
-
- EXIT;
- return copy_to_user((char *)arg, data, sizeof(*data))? -EFAULT : 0;
- }
-#if 0
- case IZO_IOC_CLIENT_MAKE_BRANCH: {
- struct presto_file_set *fset;
- int minor;
-
- fset = presto_fset(file->f_dentry);
- if (fset == NULL) {
- EXIT;
- return -ENODEV;
- }
- minor = presto_f2m(fset);
-
- rc = izo_upc_client_make_branch(minor, fset->fset_name,
- data->ioc_inlbuf1,
- data->ioc_inlbuf2);
- EXIT;
- return rc;
- }
-#endif
- case IZO_IOC_SERVER_MAKE_BRANCH: {
- struct presto_file_set *fset;
- int minor;
-
- fset = presto_fset(file->f_dentry);
- if (fset == NULL) {
- EXIT;
- return -ENODEV;
- }
- minor = presto_f2m(fset);
-
- izo_upc_server_make_branch(minor, data->ioc_inlbuf1);
- EXIT;
- return 0;
- }
- case IZO_IOC_SET_KMLSIZE: {
- struct presto_file_set *fset;
- int minor;
- struct izo_rcvd_rec rec;
-
- fset = presto_fset(file->f_dentry);
- if (fset == NULL) {
- EXIT;
- return -ENODEV;
- }
- minor = presto_f2m(fset);
-
- rc = izo_upc_set_kmlsize(minor, fset->fset_name, data->ioc_uuid,
- data->ioc_kmlsize);
-
- if (rc != 0) {
- EXIT;
- return rc;
- }
-
- rc = izo_rcvd_get(&rec, fset, data->ioc_uuid);
- if (rc == -EINVAL) {
- /* We don't know anything about this uuid yet; no
- * worries. */
- memset(&rec, 0, sizeof(rec));
- } else if (rc <= 0) {
- CERROR("InterMezzo: error reading last_rcvd: %d\n", rc);
- EXIT;
- return rc;
- }
- rec.lr_remote_offset = data->ioc_kmlsize;
- rc = izo_rcvd_write(fset, &rec);
- if (rc <= 0) {
- CERROR("InterMezzo: error writing last_rcvd: %d\n", rc);
- EXIT;
- return rc;
- }
- EXIT;
- return rc;
- }
- case IZO_IOC_BRANCH_UNDO: {
- struct presto_file_set *fset;
- int minor;
-
- fset = presto_fset(file->f_dentry);
- if (fset == NULL) {
- EXIT;
- return -ENODEV;
- }
- minor = presto_f2m(fset);
-
- rc = izo_upc_branch_undo(minor, fset->fset_name,
- data->ioc_inlbuf1);
- EXIT;
- return rc;
- }
- case IZO_IOC_BRANCH_REDO: {
- struct presto_file_set *fset;
- int minor;
-
- fset = presto_fset(file->f_dentry);
- if (fset == NULL) {
- EXIT;
- return -ENODEV;
- }
- minor = presto_f2m(fset);
-
- rc = izo_upc_branch_redo(minor, fset->fset_name,
- data->ioc_inlbuf1);
- EXIT;
- return rc;
- }
-
- default:
- EXIT;
- return -ENOTTY;
-
- }
- EXIT;
- return 0;
-}
-
-struct file_operations presto_dir_fops = {
- .ioctl = presto_ioctl
-};
-
-struct inode_operations presto_dir_iops = {
- .create = presto_create,
- .lookup = presto_lookup,
- .link = presto_link,
- .unlink = presto_unlink,
- .symlink = presto_symlink,
- .mkdir = presto_mkdir,
- .rmdir = presto_rmdir,
- .mknod = presto_mknod,
- .rename = presto_rename,
- .permission = presto_permission,
- .setattr = presto_setattr,
-#ifdef CONFIG_FS_EXT_ATTR
- .set_ext_attr = presto_set_ext_attr,
-#endif
-};
-
-
+++ /dev/null
-/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
- * vim:expandtab:shiftwidth=8:tabstop=8:
- *
- * Copyright (C) 2001 Tacit Networks, Inc.
- * Author: Shirish H. Phatak <shirish@tacitnetworks.com>
- *
- * This file is part of InterMezzo, http://www.inter-mezzo.org.
- *
- * InterMezzo is free software; you can redistribute it and/or
- * modify it under the terms of version 2 of the GNU General Public
- * License as published by the Free Software Foundation.
- *
- * InterMezzo is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with InterMezzo; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- *
- * Extended attribute handling for presto.
- */
-
-#include <linux/module.h>
-#include <linux/kernel.h>
-#include <linux/mm.h>
-#include <linux/string.h>
-#include <linux/stat.h>
-#include <linux/errno.h>
-#include <linux/unistd.h>
-
-#include <asm/system.h>
-#include <asm/uaccess.h>
-
-#include <linux/fs.h>
-#include <linux/slab.h>
-#include <linux/vmalloc.h>
-#include <asm/segment.h>
-
-#include "intermezzo_fs.h"
-#include "intermezzo_psdev.h"
-
-#ifdef CONFIG_FS_EXT_ATTR
-#include <linux/ext_attr.h>
-
-extern inline void presto_debug_fail_blkdev(struct presto_file_set *fset,
- unsigned long value);
-
-
-/* VFS interface */
-/* XXX! Fixme test for user defined attributes */
-int presto_set_ext_attr(struct inode *inode,
- const char *name, void *buffer,
- size_t buffer_len, int flags)
-{
- int error;
- struct presto_cache *cache;
- struct presto_file_set *fset;
- struct lento_vfs_context info;
- struct dentry *dentry;
- int minor = presto_i2m(inode);
- char *buf = NULL;
-
- ENTRY;
- if (minor < 0) {
- EXIT;
- return -1;
- }
-
- if ( ISLENTO(minor) ) {
- EXIT;
- return -EINVAL;
- }
-
- /* BAD...vfs should really pass down the dentry to use, especially
- * since every other operation in iops does. But for now
- * we do a reverse mapping from inode to the first dentry
- */
- if (list_empty(&inode->i_dentry)) {
- CERROR("No alias for inode %d\n", (int) inode->i_ino);
- EXIT;
- return -EINVAL;
- }
-
- dentry = list_entry(inode->i_dentry.next, struct dentry, d_alias);
-
- error = presto_prep(dentry, &cache, &fset);
- if ( error ) {
- EXIT;
- return error;
- }
-
- if ((buffer != NULL) && (buffer_len != 0)) {
- /* If buffer is a user space pointer copy it to kernel space
- * and reset the flag. We do this since the journal functions need
- * access to the contents of the buffer, and the file system
- * does not care. When we actually invoke the function, we remove
- * the EXT_ATTR_FLAG_USER flag.
- *
- * XXX:Check if the "fs does not care" assertion is always true -SHP
- * (works for ext3)
- */
- if (flags & EXT_ATTR_FLAG_USER) {
- PRESTO_ALLOC(buf, buffer_len);
- if (!buf) {
- CERROR("InterMezzo: out of memory!!!\n");
- return -ENOMEM;
- }
- error = copy_from_user(buf, buffer, buffer_len);
- if (error)
- return -EFAULT;
- } else
- buf = buffer;
- } else
- buf = buffer;
-
- if ( presto_get_permit(inode) < 0 ) {
- EXIT;
- if (buffer_len && (flags & EXT_ATTR_FLAG_USER))
- PRESTO_FREE(buf, buffer_len);
- return -EROFS;
- }
-
- /* Simulate presto_setup_info */
- memset(&info, 0, sizeof(info));
- /* For now redundant..but we keep it around just in case */
- info.flags = LENTO_FL_IGNORE_TIME;
- if (!ISLENTO(cache->cache_psdev->uc_minor))
- info.flags |= LENTO_FL_KML;
-
- /* We pass in the kernel space pointer and reset the
- * EXT_ATTR_FLAG_USER flag.
- * See comments above.
- */
- /* Note that mode is already set by VFS so we send in a NULL */
- error = presto_do_set_ext_attr(fset, dentry, name, buf,
- buffer_len, flags & ~EXT_ATTR_FLAG_USER,
- NULL, &info);
- presto_put_permit(inode);
-
- if (buffer_len && (flags & EXT_ATTR_FLAG_USER))
- PRESTO_FREE(buf, buffer_len);
- EXIT;
- return error;
-}
-
-/* Lento Interface */
-/* XXX: ignore flags? We should be forcing these operations through? -SHP*/
-int lento_set_ext_attr(const char *path, const char *name,
- void *buffer, size_t buffer_len, int flags, mode_t mode,
- struct lento_vfs_context *info)
-{
- int error;
- char * pathname;
- struct nameidata nd;
- struct dentry *dentry;
- struct presto_file_set *fset;
-
- ENTRY;
- lock_kernel();
-
- pathname=getname(path);
- error = PTR_ERR(pathname);
- if (IS_ERR(pathname)) {
- EXIT;
- goto exit;
- }
-
- /* Note that ext_attrs apply to both files and directories..*/
- error=presto_walk(pathname,&nd);
- if (error)
- goto exit;
- dentry = nd.dentry;
-
- fset = presto_fset(dentry);
- error = -EINVAL;
- if ( !fset ) {
- CERROR("No fileset!\n");
- EXIT;
- goto exit_dentry;
- }
-
- if (buffer==NULL) buffer_len=0;
-
- error = presto_do_set_ext_attr(fset, dentry, name, buffer,
- buffer_len, flags, &mode, info);
-exit_dentry:
- path_release(&nd);
-exit_path:
- putname(pathname);
-exit:
- unlock_kernel();
- return error;
-}
-
-#endif /*CONFIG_FS_EXT_ATTR*/
+++ /dev/null
-/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
- * vim:expandtab:shiftwidth=8:tabstop=8:
- *
- * Copyright (C) 2000 Stelias Computing, Inc.
- * Copyright (C) 2000 Red Hat, Inc.
- * Copyright (C) 2000 TurboLinux, Inc.
- * Copyright (C) 2000 Los Alamos National Laboratory.
- * Copyright (C) 2000, 2001 Tacit Networks, Inc.
- * Copyright (C) 2000 Peter J. Braam
- * Copyright (C) 2001 Mountain View Data, Inc.
- * Copyright (C) 2001 Cluster File Systems, Inc.
- *
- * This file is part of InterMezzo, http://www.inter-mezzo.org.
- *
- * InterMezzo is free software; you can redistribute it and/or
- * modify it under the terms of version 2 of the GNU General Public
- * License as published by the Free Software Foundation.
- *
- * InterMezzo is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with InterMezzo; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- *
- * This file manages file I/O
- *
- */
-
-#include <asm/bitops.h>
-#include <asm/uaccess.h>
-#include <asm/system.h>
-
-#include <linux/errno.h>
-#include <linux/fs.h>
-#include <linux/ext2_fs.h>
-#include <linux/slab.h>
-#include <linux/vmalloc.h>
-#include <linux/sched.h>
-#include <linux/stat.h>
-#include <linux/string.h>
-#include <linux/blkdev.h>
-#include <linux/init.h>
-#include <linux/module.h>
-
-#include <linux/fsfilter.h>
-#include "intermezzo_fs.h"
-#include "intermezzo_psdev.h"
-/*
- * these are initialized in super.c
- */
-extern int presto_permission(struct inode *inode, int mask, struct nameidata *nd);
-
-
-static int presto_open_upcall(int minor, struct dentry *de)
-{
- int rc = 0;
- char *path, *buffer;
- struct presto_file_set *fset;
- int pathlen;
- struct lento_vfs_context info;
- struct presto_dentry_data *dd = presto_d2d(de);
-
- PRESTO_ALLOC(buffer, PAGE_SIZE);
- if ( !buffer ) {
- CERROR("PRESTO: out of memory!\n");
- return -ENOMEM;
- }
- fset = presto_fset(de);
- path = presto_path(de, fset->fset_dentry, buffer, PAGE_SIZE);
- pathlen = MYPATHLEN(buffer, path);
-
- CDEBUG(D_FILE, "de %p, dd %p\n", de, dd);
- if (dd->remote_ino == 0) {
- rc = presto_get_fileid(minor, fset, de);
- }
- memset (&info, 0, sizeof(info));
- if (dd->remote_ino > 0) {
- info.remote_ino = dd->remote_ino;
- info.remote_generation = dd->remote_generation;
- } else
- CERROR("get_fileid failed %d, ino: %Lx, fetching by name\n", rc,
- (unsigned long long) dd->remote_ino);
-
- rc = izo_upc_open(minor, pathlen, path, fset->fset_name, &info);
- PRESTO_FREE(buffer, PAGE_SIZE);
- return rc;
-}
-
-static inline int open_check_dod(struct file *file,
- struct presto_file_set *fset)
-{
- int gen, is_iopen = 0, minor;
- struct presto_cache *cache = fset->fset_cache;
- ino_t inum;
-
- minor = presto_c2m(cache);
-
- if ( ISLENTO(minor) ) {
- CDEBUG(D_CACHE, "is lento, not doing DOD.\n");
- return 0;
- }
-
- /* Files are only ever opened by inode during backfetches, when by
- * definition we have the authoritative copy of the data. No DOD. */
- is_iopen = izo_dentry_is_ilookup(file->f_dentry, &inum, &gen);
-
- if (is_iopen) {
- CDEBUG(D_CACHE, "doing iopen, not doing DOD.\n");
- return 0;
- }
-
- if (!(fset->fset_flags & FSET_DATA_ON_DEMAND)) {
- CDEBUG(D_CACHE, "fileset not on demand.\n");
- return 0;
- }
-
- if (file->f_flags & O_TRUNC) {
- CDEBUG(D_CACHE, "fileset dod: O_TRUNC.\n");
- return 0;
- }
-
- if (presto_chk(file->f_dentry, PRESTO_DONT_JOURNAL)) {
- CDEBUG(D_CACHE, "file under .intermezzo, not doing DOD\n");
- return 0;
- }
-
- if (presto_chk(file->f_dentry, PRESTO_DATA)) {
- CDEBUG(D_CACHE, "PRESTO_DATA is set, not doing DOD.\n");
- return 0;
- }
-
- if (cache->cache_filter->o_trops->tr_all_data(file->f_dentry->d_inode)) {
- CDEBUG(D_CACHE, "file not sparse, not doing DOD.\n");
- return 0;
- }
-
- return 1;
-}
-
-static int presto_file_open(struct inode *inode, struct file *file)
-{
- int rc = 0;
- struct file_operations *fops;
- struct presto_cache *cache;
- struct presto_file_set *fset;
- struct presto_file_data *fdata;
- int writable = (file->f_flags & (O_RDWR | O_WRONLY));
- int minor, i;
-
- ENTRY;
-
- if (presto_prep(file->f_dentry, &cache, &fset) < 0) {
- EXIT;
- return -EBADF;
- }
-
- minor = presto_c2m(cache);
-
- CDEBUG(D_CACHE, "DATA_OK: %d, ino: %ld, islento: %d\n",
- presto_chk(file->f_dentry, PRESTO_DATA), inode->i_ino,
- ISLENTO(minor));
-
- if ( !ISLENTO(minor) && (file->f_flags & O_RDWR ||
- file->f_flags & O_WRONLY)) {
- CDEBUG(D_CACHE, "calling presto_get_permit\n");
- if ( presto_get_permit(inode) < 0 ) {
- EXIT;
- return -EROFS;
- }
- presto_put_permit(inode);
- }
-
- if (open_check_dod(file, fset)) {
- CDEBUG(D_CACHE, "presto_open_upcall\n");
- CDEBUG(D_CACHE, "dentry: %p setting DATA, ATTR\n", file->f_dentry);
- presto_set(file->f_dentry, PRESTO_ATTR | PRESTO_DATA);
- rc = presto_open_upcall(minor, file->f_dentry);
- if (rc) {
- EXIT;
- CERROR("%s: returning error %d\n", __FUNCTION__, rc);
- return rc;
- }
-
- }
-
- /* file was truncated upon open: do not refetch */
- if (file->f_flags & O_TRUNC) {
- CDEBUG(D_CACHE, "setting DATA, ATTR\n");
- presto_set(file->f_dentry, PRESTO_ATTR | PRESTO_DATA);
- }
-
- fops = filter_c2cffops(cache->cache_filter);
- if ( fops->open ) {
- CDEBUG(D_CACHE, "calling fs open\n");
- rc = fops->open(inode, file);
-
- if (rc) {
- EXIT;
- return rc;
- }
- }
-
- if (writable) {
- PRESTO_ALLOC(fdata, sizeof(*fdata));
- if (!fdata) {
- EXIT;
- return -ENOMEM;
- }
- /* LOCK: XXX check that the kernel lock protects this alloc */
- fdata->fd_do_lml = 0;
- fdata->fd_bytes_written = 0;
- fdata->fd_fsuid = current->fsuid;
- fdata->fd_fsgid = current->fsgid;
- fdata->fd_mode = file->f_dentry->d_inode->i_mode;
- fdata->fd_uid = file->f_dentry->d_inode->i_uid;
- fdata->fd_gid = file->f_dentry->d_inode->i_gid;
- fdata->fd_ngroups = current->group_info->ngroups;
- for (i=0 ; i < current->group_info->ngroups ; i++)
- fdata->fd_groups[i] = GROUP_AT(current->group_info,i);
- if (!ISLENTO(minor))
- fdata->fd_info.flags = LENTO_FL_KML;
- else {
- /* this is for the case of DOD,
- reint_close will adjust flags if needed */
- fdata->fd_info.flags = 0;
- }
-
- presto_getversion(&fdata->fd_version, inode);
- file->private_data = fdata;
- } else {
- file->private_data = NULL;
- }
-
- EXIT;
- return 0;
-}
-
-int presto_adjust_lml(struct file *file, struct lento_vfs_context *info)
-{
- struct presto_file_data *fdata =
- (struct presto_file_data *) file->private_data;
-
- if (!fdata) {
- EXIT;
- return -EINVAL;
- }
-
- memcpy(&fdata->fd_info, info, sizeof(*info));
- EXIT;
- return 0;
-}
-
-
-static int presto_file_release(struct inode *inode, struct file *file)
-{
- int rc;
- struct file_operations *fops;
- struct presto_cache *cache;
- struct presto_file_set *fset;
- struct presto_file_data *fdata =
- (struct presto_file_data *)file->private_data;
- ENTRY;
-
- rc = presto_prep(file->f_dentry, &cache, &fset);
- if ( rc ) {
- EXIT;
- return rc;
- }
-
- fops = filter_c2cffops(cache->cache_filter);
- if (fops && fops->release)
- rc = fops->release(inode, file);
-
- CDEBUG(D_CACHE, "islento = %d (minor %d), rc %d, data %p\n",
- ISLENTO(cache->cache_psdev->uc_minor),
- cache->cache_psdev->uc_minor, rc, fdata);
-
- /* this file was modified: ignore close errors, write KML */
- if (fdata && fdata->fd_do_lml) {
- /* XXX: remove when lento gets file granularity cd */
- if ( presto_get_permit(inode) < 0 ) {
- EXIT;
- return -EROFS;
- }
-
- fdata->fd_info.updated_time = file->f_dentry->d_inode->i_mtime;
- rc = presto_do_close(fset, file);
- presto_put_permit(inode);
- }
-
- if (!rc && fdata) {
- PRESTO_FREE(fdata, sizeof(*fdata));
- file->private_data = NULL;
- }
-
- EXIT;
- return rc;
-}
-
-static void presto_apply_write_policy(struct file *file,
- struct presto_file_set *fset, loff_t res)
-{
- struct presto_file_data *fdata =
- (struct presto_file_data *)file->private_data;
- struct presto_cache *cache = fset->fset_cache;
- struct presto_version new_file_ver;
- int error;
- struct rec_info rec;
-
- /* Here we do a journal close after a fixed or a specified
- amount of KBytes, currently a global parameter set with
- sysctl. If files are open for a long time, this gives added
- protection. (XXX todo: per cache, add ioctl, handle
- journaling in a thread, add more options etc.)
- */
-
- if ((fset->fset_flags & FSET_JCLOSE_ON_WRITE) &&
- (!ISLENTO(cache->cache_psdev->uc_minor))) {
- fdata->fd_bytes_written += res;
-
- if (fdata->fd_bytes_written >= fset->fset_file_maxio) {
- presto_getversion(&new_file_ver,
- file->f_dentry->d_inode);
- /* This is really heavy weight and should be fixed
- ASAP. At most we should be recording the number
- of bytes written and not locking the kernel,
- wait for permits, etc, on the write path. SHP
- */
- lock_kernel();
- if ( presto_get_permit(file->f_dentry->d_inode) < 0 ) {
- EXIT;
- /* we must be disconnected, not to worry */
- unlock_kernel();
- return;
- }
- error = presto_journal_close(&rec, fset, fdata,
- file->f_dentry,
- &fdata->fd_version,
- &new_file_ver);
- presto_put_permit(file->f_dentry->d_inode);
- unlock_kernel();
- if ( error ) {
- CERROR("presto_close: cannot journal close\n");
- /* XXX these errors are really bad */
- /* panic(); */
- return;
- }
- fdata->fd_bytes_written = 0;
- }
- }
-}
-
-static ssize_t presto_file_write(struct file *file, const char *buf,
- size_t size, loff_t *off)
-{
- struct rec_info rec;
- int error;
- struct presto_cache *cache;
- struct presto_file_set *fset;
- struct file_operations *fops;
- ssize_t res;
- int do_lml_here;
- void *handle = NULL;
- unsigned long blocks;
- struct presto_file_data *fdata;
- loff_t res_size;
-
- error = presto_prep(file->f_dentry, &cache, &fset);
- if ( error ) {
- EXIT;
- return error;
- }
-
- blocks = (size >> file->f_dentry->d_inode->i_sb->s_blocksize_bits) + 1;
- /* XXX 3 is for ext2 indirect blocks ... */
- res_size = 2 * PRESTO_REQHIGH + ((blocks+3)
- << file->f_dentry->d_inode->i_sb->s_blocksize_bits);
-
- error = presto_reserve_space(fset->fset_cache, res_size);
- CDEBUG(D_INODE, "Reserved %Ld for %Zd\n", res_size, size);
- if ( error ) {
- EXIT;
- return -ENOSPC;
- }
-
- CDEBUG(D_INODE, "islento %d, minor: %d\n",
- ISLENTO(cache->cache_psdev->uc_minor),
- cache->cache_psdev->uc_minor);
-
- /*
- * XXX this lock should become a per inode lock when
- * Vinny's changes are in; we could just use i_sem.
- */
- read_lock(&fset->fset_lml.fd_lock);
- fdata = (struct presto_file_data *)file->private_data;
- do_lml_here = size && (fdata->fd_do_lml == 0) &&
- !presto_chk(file->f_dentry, PRESTO_DONT_JOURNAL);
-
- if (do_lml_here)
- fdata->fd_do_lml = 1;
- read_unlock(&fset->fset_lml.fd_lock);
-
- /* XXX
- There might be a bug here. We need to make
- absolutely sure that the ext3_file_write commits
- after our transaction that writes the LML record.
- Nesting the file write helps if new blocks are allocated.
- */
- res = 0;
- if (do_lml_here) {
- struct presto_version file_version;
- /* handle different space reqs from file system below! */
- handle = presto_trans_start(fset, file->f_dentry->d_inode,
- KML_OPCODE_WRITE);
- if ( IS_ERR(handle) ) {
- presto_release_space(fset->fset_cache, res_size);
- CERROR("presto_write: no space for transaction\n");
- return -ENOSPC;
- }
-
- presto_getversion(&file_version, file->f_dentry->d_inode);
- res = presto_write_lml_close(&rec, fset, file,
- fdata->fd_info.remote_ino,
- fdata->fd_info.remote_generation,
- &fdata->fd_info.remote_version,
- &file_version);
- fdata->fd_lml_offset = rec.offset;
- if ( res ) {
- CERROR("intermezzo: PANIC failed to write LML\n");
- *(int *)0 = 1;
- EXIT;
- goto exit_write;
- }
- presto_trans_commit(fset, handle);
- }
-
- fops = filter_c2cffops(cache->cache_filter);
- res = fops->write(file, buf, size, off);
- if ( res != size ) {
- CDEBUG(D_FILE, "file write returns short write: size %Zd, res %Zd\n", size, res);
- }
-
- if ( (res > 0) && fdata )
- presto_apply_write_policy(file, fset, res);
-
- exit_write:
- presto_release_space(fset->fset_cache, res_size);
- return res;
-}
-
-struct file_operations presto_file_fops = {
- .write = presto_file_write,
- .open = presto_file_open,
- .release = presto_file_release,
- .ioctl = presto_ioctl
-};
-
-struct inode_operations presto_file_iops = {
- .permission = presto_permission,
- .setattr = presto_setattr,
-#ifdef CONFIG_FS_EXT_ATTR
- .set_ext_attr = presto_set_ext_attr,
-#endif
-};
-
-/* FIXME: I bet we want to add a lock here and in presto_file_open. */
-int izo_purge_file(struct presto_file_set *fset, char *file)
-{
-#if 0
- void *handle = NULL;
- char *path = NULL;
- struct nameidata nd;
- struct dentry *dentry;
- int rc = 0, len;
- loff_t oldsize;
-
- /* FIXME: not mtpt it's gone */
- len = strlen(fset->fset_cache->cache_mtpt) + strlen(file) + 1;
- PRESTO_ALLOC(path, len + 1);
- if (path == NULL)
- return -1;
-
- sprintf(path, "%s/%s", fset->fset_cache->cache_mtpt, file);
- rc = izo_lookup_file(fset, path, &nd);
- if (rc)
- goto error;
- dentry = nd.dentry;
-
- /* FIXME: take a lock here */
-
- if (dentry->d_inode->i_atime.tv_sec > get_seconds() - 5) {
- /* We lost the race; this file was accessed while we were doing
- * ioctls and lookups and whatnot. */
- rc = -EBUSY;
- goto error_unlock;
- }
-
- /* FIXME: Check if this file is open. */
-
- handle = presto_trans_start(fset, dentry->d_inode, KML_OPCODE_TRUNC);
- if (IS_ERR(handle)) {
- rc = -ENOMEM;
- goto error_unlock;
- }
-
- /* FIXME: Write LML record */
-
- oldsize = dentry->d_inode->i_size;
- rc = izo_do_truncate(fset, dentry, 0, oldsize);
- if (rc != 0)
- goto error_clear;
- rc = izo_do_truncate(fset, dentry, oldsize, 0);
- if (rc != 0)
- goto error_clear;
-
- error_clear:
- /* FIXME: clear LML record */
-
- error_unlock:
- /* FIXME: release the lock here */
-
- error:
- if (handle != NULL && !IS_ERR(handle))
- presto_trans_commit(fset, handle);
- if (path != NULL)
- PRESTO_FREE(path, len + 1);
- return rc;
-#else
- return 0;
-#endif
-}
+++ /dev/null
-/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
- * vim:expandtab:shiftwidth=8:tabstop=8:
- *
- * Copyright (C) 2001 Cluster File Systems, Inc. <braam@clusterfs.com>
- *
- * This file is part of InterMezzo, http://www.inter-mezzo.org.
- *
- * InterMezzo is free software; you can redistribute it and/or
- * modify it under the terms of version 2 of the GNU General Public
- * License as published by the Free Software Foundation.
- *
- * InterMezzo is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with InterMezzo; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- *
- * Managing filesets
- *
- */
-
-#include <asm/bitops.h>
-#include <asm/uaccess.h>
-#include <asm/system.h>
-
-#include <linux/errno.h>
-#include <linux/fs.h>
-#include <linux/namei.h>
-#include <linux/ext2_fs.h>
-#include <linux/slab.h>
-#include <linux/vmalloc.h>
-#include <linux/sched.h>
-#include <linux/stat.h>
-#include <linux/string.h>
-#include <linux/blkdev.h>
-#include <linux/init.h>
-#include <linux/module.h>
-
-#include "intermezzo_fs.h"
-#include "intermezzo_psdev.h"
-
-static inline struct presto_file_set *presto_dentry2fset(struct dentry *dentry)
-{
- if (presto_d2d(dentry) == NULL) {
- EXIT;
- return NULL;
- }
- return presto_d2d(dentry)->dd_fset;
-}
-
-/* find the fileset dentry for this dentry */
-struct presto_file_set *presto_fset(struct dentry *de)
-{
- struct dentry *fsde;
- ENTRY;
- if ( !de->d_inode ) {
- /* FIXME: is this ok to be NULL? */
- CDEBUG(D_INODE,"presto_fset: warning %*s has NULL inode.\n",
- de->d_name.len, de->d_name.name);
- }
- for (fsde = de;; fsde = fsde->d_parent) {
- if ( presto_dentry2fset(fsde) ) {
- EXIT;
- return presto_dentry2fset(fsde);
- }
- if (fsde->d_parent == fsde)
- break;
- }
- EXIT;
- return NULL;
-}
-
-int presto_get_lastrecno(char *path, off_t *recno)
-{
- struct nameidata nd;
- struct presto_file_set *fset;
- struct dentry *dentry;
- int error;
- ENTRY;
-
- error = presto_walk(path, &nd);
- if (error) {
- EXIT;
- return error;
- }
-
- dentry = nd.dentry;
-
- error = -ENXIO;
- if ( !presto_ispresto(dentry->d_inode) ) {
- EXIT;
- goto kml_out;
- }
-
- error = -EINVAL;
- if ( ! presto_dentry2fset(dentry)) {
- EXIT;
- goto kml_out;
- }
-
- fset = presto_dentry2fset(dentry);
- if (!fset) {
- EXIT;
- goto kml_out;
- }
- error = 0;
- *recno = fset->fset_kml.fd_recno;
-
- kml_out:
- path_release(&nd);
- return error;
-}
-
-static char * _izo_make_path(char *fsetname, char *name)
-{
- char *path = NULL;
- int len;
-
- len = strlen("/.intermezzo/") + strlen(fsetname)
- + 1 + strlen(name) + 1;
-
- PRESTO_ALLOC(path, len);
- if (path == NULL)
- return NULL;
-
- sprintf(path, "/.intermezzo/%s/%s", fsetname, name);
-
- return path;
-}
-
-char * izo_make_path(struct presto_file_set *fset, char *name)
-{
- return _izo_make_path(fset->fset_name, name);
-}
-
-static struct file *_izo_fset_open(char *fsetname, char *name, int flags, int mode)
-{
- char *path;
- struct file *f;
- int error;
- ENTRY;
-
- path = _izo_make_path(fsetname, name);
- if (path == NULL) {
- EXIT;
- return ERR_PTR(-ENOMEM);
- }
-
- CDEBUG(D_INODE, "opening file %s\n", path);
- f = filp_open(path, flags, mode);
- error = PTR_ERR(f);
- if (IS_ERR(f)) {
- CDEBUG(D_INODE, "Error %d\n", error);
- }
-
- PRESTO_FREE(path, strlen(path));
-
- EXIT;
- return f;
-
-}
-
-struct file *izo_fset_open(struct presto_file_set *fset, char *name, int flags, int mode)
-{
- return _izo_fset_open(fset->fset_name, name, flags, mode);
-}
-
-
-
-/*
- * note: this routine "pins" a dentry for a fileset root
- */
-int presto_set_fsetroot(struct dentry *ioctl_dentry, char *fsetname,
- unsigned int flags)
-{
- struct presto_file_set *fset = NULL;
- struct presto_cache *cache;
- int error;
- struct file *fset_root;
- struct dentry *dentry;
-
- ENTRY;
-
- fset_root = _izo_fset_open(fsetname, "ROOT", O_RDONLY, 000);
- if (IS_ERR(fset_root)) {
- CERROR("Can't open %s/ROOT\n", fsetname);
- EXIT;
- error = PTR_ERR(fset_root);
- goto out;
- }
- dentry = dget(fset_root->f_dentry);
- filp_close(fset_root, NULL);
-
- dentry->d_inode->i_op = ioctl_dentry->d_inode->i_op;
- dentry->d_inode->i_fop = ioctl_dentry->d_inode->i_fop;
- dentry->d_op = ioctl_dentry->d_op;
- fset = presto_dentry2fset(dentry);
- if (fset && (fset->fset_dentry == dentry) ) {
- CERROR("Fsetroot already set (inode %ld)\n",
- dentry->d_inode->i_ino);
- /* XXX: ignore because clear_fsetroot is broken */
-#if 0
- dput(dentry);
- EXIT;
- error = -EEXIST;
- goto out;
-#endif
- }
-
- cache = presto_get_cache(dentry->d_inode);
- if (!cache) {
- CERROR("No cache found for inode %ld\n",
- dentry->d_inode->i_ino);
- EXIT;
- error = -ENODEV;
- goto out_free;
- }
-
- PRESTO_ALLOC(fset, sizeof(*fset));
- if ( !fset ) {
- CERROR("No memory allocating fset for %s\n", fsetname);
- EXIT;
- error = -ENOMEM;
- goto out_free;
- }
- CDEBUG(D_INODE, "fset at %p\n", fset);
-
- CDEBUG(D_INODE, "InterMezzo: fsetroot: inode %ld, fileset name %s\n",
- dentry->d_inode->i_ino, fsetname);
-
- fset->fset_mnt = mntget(current->fs->pwdmnt);
- fset->fset_cache = cache;
- fset->fset_dentry = dentry;
- fset->fset_name = strdup(fsetname);
- fset->fset_chunkbits = CHUNK_BITS;
- fset->fset_flags = flags;
- fset->fset_file_maxio = FSET_DEFAULT_MAX_FILEIO;
- fset->fset_permit_lock = SPIN_LOCK_UNLOCKED;
- PRESTO_ALLOC(fset->fset_reint_buf, 64 * 1024);
- if (fset->fset_reint_buf == NULL) {
- EXIT;
- error = -ENOMEM;
- goto out_free;
- }
- init_waitqueue_head(&fset->fset_permit_queue);
-
- if (presto_d2d(dentry) == NULL) {
- dentry->d_fsdata = izo_alloc_ddata();
- }
- if (presto_d2d(dentry) == NULL) {
- CERROR("InterMezzo: %s: no memory\n", __FUNCTION__);
- EXIT;
- error = -ENOMEM;
- goto out_free;
- }
- presto_d2d(dentry)->dd_fset = fset;
- list_add(&fset->fset_list, &cache->cache_fset_list);
-
- error = izo_init_kml_file(fset, &fset->fset_kml);
- if ( error ) {
- EXIT;
- CDEBUG(D_JOURNAL, "Error init_kml %d\n", error);
- goto out_list_del;
- }
-
- error = izo_init_lml_file(fset, &fset->fset_lml);
- if ( error ) {
- int rc;
- EXIT;
- rc = izo_log_close(&fset->fset_kml);
- CDEBUG(D_JOURNAL, "Error init_lml %d, cleanup %d\n", error, rc);
- goto out_list_del;
- }
-
- /* init_last_rcvd_file could trigger a presto_file_write(), which
- * requires that the lml structure be initialized. -phil */
- error = izo_init_last_rcvd_file(fset, &fset->fset_rcvd);
- if ( error ) {
- int rc;
- EXIT;
- rc = izo_log_close(&fset->fset_kml);
- rc = izo_log_close(&fset->fset_lml);
- CDEBUG(D_JOURNAL, "Error init_lastrcvd %d, cleanup %d\n", error, rc);
- goto out_list_del;
- }
-
- CDEBUG(D_PIOCTL, "-------> fset at %p, dentry at %p, mtpt %p,"
- "fset %s, cache %p, presto_d2d(dentry)->dd_fset %p\n",
- fset, dentry, fset->fset_dentry, fset->fset_name, cache,
- presto_d2d(dentry)->dd_fset);
-
- EXIT;
- return 0;
-
- out_list_del:
- list_del(&fset->fset_list);
- presto_d2d(dentry)->dd_fset = NULL;
- out_free:
- if (fset) {
- mntput(fset->fset_mnt);
- if (fset->fset_reint_buf != NULL)
- PRESTO_FREE(fset->fset_reint_buf, 64 * 1024);
- PRESTO_FREE(fset, sizeof(*fset));
- }
- dput(dentry);
- out:
- return error;
-}
-
-static int izo_cleanup_fset(struct presto_file_set *fset)
-{
- int error;
- struct presto_cache *cache;
-
- ENTRY;
-
- CERROR("Cleaning up fset %s\n", fset->fset_name);
-
- error = izo_log_close(&fset->fset_kml);
- if (error)
- CERROR("InterMezzo: Closing kml for fset %s: %d\n",
- fset->fset_name, error);
- error = izo_log_close(&fset->fset_lml);
- if (error)
- CERROR("InterMezzo: Closing lml for fset %s: %d\n",
- fset->fset_name, error);
- error = izo_log_close(&fset->fset_rcvd);
- if (error)
- CERROR("InterMezzo: Closing last_rcvd for fset %s: %d\n",
- fset->fset_name, error);
-
- cache = fset->fset_cache;
-
- list_del(&fset->fset_list);
-
- presto_d2d(fset->fset_dentry)->dd_fset = NULL;
- dput(fset->fset_dentry);
- mntput(fset->fset_mnt);
-
- PRESTO_FREE(fset->fset_name, strlen(fset->fset_name) + 1);
- PRESTO_FREE(fset->fset_reint_buf, 64 * 1024);
- PRESTO_FREE(fset, sizeof(*fset));
- EXIT;
- return error;
-}
-
-int izo_clear_fsetroot(struct dentry *dentry)
-{
- struct presto_file_set *fset;
-
- ENTRY;
-
- fset = presto_dentry2fset(dentry);
- if (!fset) {
- EXIT;
- return -EINVAL;
- }
-
- izo_cleanup_fset(fset);
- EXIT;
- return 0;
-}
-
-int izo_clear_all_fsetroots(struct presto_cache *cache)
-{
- struct presto_file_set *fset;
- struct list_head *tmp,*tmpnext;
- int error;
-
- error = 0;
- tmp = &cache->cache_fset_list;
- tmpnext = tmp->next;
- while ( tmpnext != &cache->cache_fset_list) {
- tmp = tmpnext;
- tmpnext = tmp->next;
- fset = list_entry(tmp, struct presto_file_set, fset_list);
-
- error = izo_cleanup_fset(fset);
- if (error)
- break;
- }
- return error;
-}
-
-static struct vfsmount *izo_alloc_vfsmnt(void)
-{
- struct vfsmount *mnt;
- PRESTO_ALLOC(mnt, sizeof(*mnt));
- if (mnt) {
- memset(mnt, 0, sizeof(struct vfsmount));
- atomic_set(&mnt->mnt_count,1);
- INIT_LIST_HEAD(&mnt->mnt_hash);
- INIT_LIST_HEAD(&mnt->mnt_child);
- INIT_LIST_HEAD(&mnt->mnt_mounts);
- INIT_LIST_HEAD(&mnt->mnt_list);
- }
- return mnt;
-}
-
-
-static void izo_setup_ctxt(struct dentry *root, struct vfsmount *mnt,
- struct run_ctxt *save)
-{
- struct run_ctxt new;
-
- mnt->mnt_root = root;
- mnt->mnt_sb = root->d_inode->i_sb;
- unlock_super(mnt->mnt_sb);
-
- new.rootmnt = mnt;
- new.root = root;
- new.pwdmnt = mnt;
- new.pwd = root;
- new.fsuid = 0;
- new.fsgid = 0;
- new.fs = get_fs();
- /* XXX where can we get the groups from? */
- new.group_info = groups_alloc(0);
-
- push_ctxt(save, &new);
-}
-
-static void izo_cleanup_ctxt(struct vfsmount *mnt, struct run_ctxt *save)
-{
- lock_super(mnt->mnt_sb);
- pop_ctxt(save);
-}
-
-static int izo_simple_mkdir(struct dentry *dir, char *name, int mode)
-{
- struct dentry *dchild;
- int err;
- ENTRY;
-
- dchild = lookup_one_len(name, dir, strlen(name));
- if (IS_ERR(dchild)) {
- EXIT;
- return PTR_ERR(dchild);
- }
-
- if (dchild->d_inode) {
- dput(dchild);
- EXIT;
- return -EEXIST;
- }
-
- err = vfs_mkdir(dir->d_inode, dchild, mode);
- dput(dchild);
-
- EXIT;
- return err;
-}
-
-static int izo_simple_symlink(struct dentry *dir, char *name, char *tgt)
-{
- struct dentry *dchild;
- int err;
- ENTRY;
-
- dchild = lookup_one_len(name, dir, strlen(name));
- if (IS_ERR(dchild)) {
- EXIT;
- return PTR_ERR(dchild);
- }
-
- if (dchild->d_inode) {
- dput(dchild);
- EXIT;
- return -EEXIST;
- }
-
- err = vfs_symlink(dir->d_inode, dchild, tgt);
- dput(dchild);
-
- EXIT;
- return err;
-}
-
-/*
- * run set_fsetroot in chroot environment
- */
-int presto_set_fsetroot_from_ioc(struct dentry *root, char *fsetname,
- unsigned int flags)
-{
- int rc;
- struct presto_cache *cache;
- struct vfsmount *mnt;
- struct run_ctxt save;
-
- if (root != root->d_inode->i_sb->s_root) {
- CERROR ("IOC_SET_FSET must be called on mount point\n");
- return -ENODEV;
- }
-
- cache = presto_get_cache(root->d_inode);
- mnt = cache->cache_vfsmount;
- if (!mnt) {
- EXIT;
- return -ENOMEM;
- }
-
- izo_setup_ctxt(root, mnt, &save);
- rc = presto_set_fsetroot(root, fsetname, flags);
- izo_cleanup_ctxt(mnt, &save);
- return rc;
-}
-
-/* XXX: this function should detect if fsetname is already in use for
- the cache under root
-*/
-int izo_prepare_fileset(struct dentry *root, char *fsetname)
-{
- int err;
- struct dentry *dotizo = NULL, *fsetdir = NULL, *dotiopen = NULL;
- struct presto_cache *cache;
- struct vfsmount *mnt;
- struct run_ctxt save;
-
- cache = presto_get_cache(root->d_inode);
- mnt = cache->cache_vfsmount = izo_alloc_vfsmnt();
- if (!mnt) {
- EXIT;
- return -ENOMEM;
- }
-
- if (!fsetname)
- fsetname = "rootfset";
-
- izo_setup_ctxt(root, mnt, &save);
-
- err = izo_simple_mkdir(root, ".intermezzo", 0755);
- CDEBUG(D_CACHE, "mkdir on .intermezzo err %d\n", err);
-
- err = izo_simple_mkdir(root, "..iopen..", 0755);
- CDEBUG(D_CACHE, "mkdir on ..iopen.. err %d\n", err);
-
- dotiopen = lookup_one_len("..iopen..", root, strlen("..iopen.."));
- if (IS_ERR(dotiopen)) {
- EXIT;
- goto out;
- }
- dotiopen->d_inode->i_op = &presto_dir_iops;
- dput(dotiopen);
-
-
- dotizo = lookup_one_len(".intermezzo", root, strlen(".intermezzo"));
- if (IS_ERR(dotizo)) {
- EXIT;
- goto out;
- }
-
-
- err = izo_simple_mkdir(dotizo, fsetname, 0755);
- CDEBUG(D_CACHE, "mkdir err %d\n", err);
-
- /* XXX find the dentry of the root of the fileset (root for now) */
- fsetdir = lookup_one_len(fsetname, dotizo, strlen(fsetname));
- if (IS_ERR(fsetdir)) {
- EXIT;
- goto out;
- }
-
- err = izo_simple_symlink(fsetdir, "ROOT", "../..");
-
- /* XXX read flags from flags file */
- err = presto_set_fsetroot(root, fsetname, 0);
- CDEBUG(D_CACHE, "set_fsetroot err %d\n", err);
-
- out:
- if (dotizo && !IS_ERR(dotizo))
- dput(dotizo);
- if (fsetdir && !IS_ERR(fsetdir))
- dput(fsetdir);
- izo_cleanup_ctxt(mnt, &save);
- return err;
-}
-
-int izo_set_fileid(struct file *dir, struct izo_ioctl_data *data)
-{
- int rc = 0;
- struct presto_cache *cache;
- struct vfsmount *mnt;
- struct run_ctxt save;
- struct nameidata nd;
- struct dentry *dentry;
- struct presto_dentry_data *dd;
- struct dentry *root;
- char *buf = NULL;
-
- ENTRY;
-
-
- root = dir->f_dentry;
-
- /* actually, needs to be called on ROOT of fset, not mount point
- if (root != root->d_inode->i_sb->s_root) {
- CERROR ("IOC_SET_FSET must be called on mount point\n");
- return -ENODEV;
- }
- */
-
- cache = presto_get_cache(root->d_inode);
- mnt = cache->cache_vfsmount;
- if (!mnt) {
- EXIT;
- return -ENOMEM;
- }
-
- izo_setup_ctxt(root, mnt, &save);
-
- PRESTO_ALLOC(buf, data->ioc_plen1);
- if (!buf) {
- rc = -ENOMEM;
- EXIT;
- goto out;
- }
- if (copy_from_user(buf, data->ioc_pbuf1, data->ioc_plen1)) {
- rc = -EFAULT;
- EXIT;
- goto out;
- }
-
- rc = presto_walk(buf, &nd);
- if (rc) {
- CERROR("Unable to open: %s\n", buf);
- EXIT;
- goto out;
- }
- dentry = nd.dentry;
- if (!dentry) {
- CERROR("no dentry!\n");
- rc = -EINVAL;
- EXIT;
- goto out_close;
- }
- dd = presto_d2d(dentry);
- if (!dd) {
- CERROR("no dentry_data!\n");
- rc = -EINVAL;
- EXIT;
- goto out_close;
- }
-
- CDEBUG(D_FILE,"de:%p dd:%p\n", dentry, dd);
-
- if (dd->remote_ino != 0) {
- CERROR("remote_ino already set? %Lx:%Lx\n",
- (unsigned long long) dd->remote_ino,
- (unsigned long long) dd->remote_generation);
- rc = 0;
- EXIT;
- goto out_close;
- }
-
-
- CDEBUG(D_FILE,"setting %p %p, %s to %Lx:%Lx\n", dentry, dd,
- buf,
- (unsigned long long) data->ioc_ino,
- (unsigned long long) data->ioc_generation);
- dd->remote_ino = data->ioc_ino;
- dd->remote_generation = data->ioc_generation;
-
- EXIT;
- out_close:
- path_release(&nd);
- out:
- if (buf)
- PRESTO_FREE(buf, data->ioc_plen1);
- izo_cleanup_ctxt(mnt, &save);
- return rc;
-}
+++ /dev/null
-/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
- * vim:expandtab:shiftwidth=8:tabstop=8:
- *
- * Copyright (C) 1996 Peter J. Braam <braam@maths.ox.ac.uk> and
- * Michael Callahan <callahan@maths.ox.ac.uk>
- * Copyright (C) 1999 Carnegie Mellon University
- * Rewritten for Linux 2.1. Peter Braam <braam@cs.cmu.edu>
- *
- * This file is part of InterMezzo, http://www.inter-mezzo.org.
- *
- * InterMezzo is free software; you can redistribute it and/or
- * modify it under the terms of version 2 of the GNU General Public
- * License as published by the Free Software Foundation.
- *
- * InterMezzo is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with InterMezzo; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- *
- * Super block/filesystem wide operations
- */
-
-#include <linux/module.h>
-#include <linux/kernel.h>
-#include <linux/mm.h>
-#include <linux/string.h>
-#include <linux/stat.h>
-#include <linux/errno.h>
-#include <linux/unistd.h>
-
-#include <asm/system.h>
-#include <asm/uaccess.h>
-
-#include <linux/fs.h>
-#include <linux/slab.h>
-#include <linux/vmalloc.h>
-#include <asm/segment.h>
-
-#include "intermezzo_fs.h"
-#include "intermezzo_psdev.h"
-
-extern void presto_free_cache(struct presto_cache *);
-
-void presto_set_ops(struct inode *inode, struct filter_fs *filter)
-{
- ENTRY;
-
- if (!inode || is_bad_inode(inode))
- return;
-
- if (S_ISREG(inode->i_mode)) {
- if ( !filter_c2cfiops(filter) ) {
- filter_setup_file_ops(filter,
- inode, &presto_file_iops,
- &presto_file_fops);
- }
- inode->i_op = filter_c2ufiops(filter);
- inode->i_fop = filter_c2uffops(filter);
- CDEBUG(D_INODE, "set file methods for %ld to %p\n",
- inode->i_ino, inode->i_op);
- } else if (S_ISDIR(inode->i_mode)) {
- inode->i_op = filter_c2udiops(filter);
- inode->i_fop = filter_c2udfops(filter);
- CDEBUG(D_INODE, "set dir methods for %ld to %p ioctl %p\n",
- inode->i_ino, inode->i_op, inode->i_fop->ioctl);
- } else if (S_ISLNK(inode->i_mode)) {
- if ( !filter_c2csiops(filter)) {
- filter_setup_symlink_ops(filter,
- inode,
- &presto_sym_iops,
- &presto_sym_fops);
- }
- inode->i_op = filter_c2usiops(filter);
- inode->i_fop = filter_c2usfops(filter);
- CDEBUG(D_INODE, "set link methods for %ld to %p\n",
- inode->i_ino, inode->i_op);
- }
- EXIT;
-}
-
-void presto_read_inode(struct inode *inode)
-{
- struct presto_cache *cache;
-
- cache = presto_get_cache(inode);
- if ( !cache ) {
- CERROR("PRESTO: BAD, BAD: cannot find cache\n");
- make_bad_inode(inode);
- return ;
- }
-
- filter_c2csops(cache->cache_filter)->read_inode(inode);
-
- CDEBUG(D_INODE, "presto_read_inode: ino %ld, gid %d\n",
- inode->i_ino, inode->i_gid);
-
- presto_set_ops(inode, cache->cache_filter);
- /* XXX handle special inodes here or not - probably not? */
-}
-
-static void presto_put_super(struct super_block *sb)
-{
- struct presto_cache *cache;
- struct upc_channel *channel;
- struct super_operations *sops;
- struct list_head *lh;
- int err;
-
- ENTRY;
- cache = presto_cache_find(sb);
- if (!cache) {
- EXIT;
- goto exit;
- }
- channel = &izo_channels[presto_c2m(cache)];
- sops = filter_c2csops(cache->cache_filter);
- err = izo_clear_all_fsetroots(cache);
- if (err) {
- CERROR("%s: err %d\n", __FUNCTION__, err);
- }
- PRESTO_FREE(cache->cache_vfsmount, sizeof(struct vfsmount));
-
- /* look at kill_super - fsync_super is not exported GRRR but
- probably not needed */
- unlock_super(sb);
- shrink_dcache_parent(cache->cache_root);
- dput(cache->cache_root);
- //fsync_super(sb);
- lock_super(sb);
-
- if (sops->write_super)
- sops->write_super(sb);
-
- if (sops->put_super)
- sops->put_super(sb);
-
- /* free any remaining async upcalls when the filesystem is unmounted */
- spin_lock(&channel->uc_lock);
- lh = channel->uc_pending.next;
- while ( lh != &channel->uc_pending) {
- struct upc_req *req;
- req = list_entry(lh, struct upc_req, rq_chain);
-
- /* assignment must be here: we are about to free &lh */
- lh = lh->next;
- if ( ! (req->rq_flags & REQ_ASYNC) )
- continue;
- list_del(&(req->rq_chain));
- PRESTO_FREE(req->rq_data, req->rq_bufsize);
- PRESTO_FREE(req, sizeof(struct upc_req));
- }
- list_del(&cache->cache_channel_list);
- spin_unlock(&channel->uc_lock);
-
- presto_free_cache(cache);
-
-exit:
- CDEBUG(D_MALLOC, "after umount: kmem %ld, vmem %ld\n",
- presto_kmemory, presto_vmemory);
- return ;
-}
-
-struct super_operations presto_super_ops = {
- .read_inode = presto_read_inode,
- .put_super = presto_put_super,
-};
-
-
-/* symlinks can be chowned */
-struct inode_operations presto_sym_iops = {
- .setattr = presto_setattr
-};
-
-/* NULL for now */
-struct file_operations presto_sym_fops;
+++ /dev/null
-/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
- * vim:expandtab:shiftwidth=8:tabstop=8:
- *
- * Copyright (C) 2001, 2002 Cluster File Systems, Inc.
- * Copyright (C) 2001 Tacitus Systems, Inc.
- * Copyright (C) 2000 Stelias Computing, Inc.
- * Copyright (C) 2000 Red Hat, Inc.
- * Copyright (C) 2000 TurboLinux, Inc.
- * Copyright (C) 2000 Los Alamos National Laboratory.
- *
- * This file is part of InterMezzo, http://www.inter-mezzo.org.
- *
- * InterMezzo is free software; you can redistribute it and/or
- * modify it under the terms of version 2 of the GNU General Public
- * License as published by the Free Software Foundation.
- *
- * InterMezzo is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with InterMezzo; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- */
-
-#ifndef __INTERMEZZO_FS_H_
-#define __INTERMEZZO_FS_H_ 1
-
-#include "intermezzo_lib.h"
-#include "intermezzo_idl.h"
-
-
-#ifdef __KERNEL__
-typedef __u8 uuid_t[16];
-#else
-# include <uuid/uuid.h>
-#endif
-
-struct lento_vfs_context {
- __u64 kml_offset;
- struct timespec updated_time;
- __u64 remote_ino;
- __u64 remote_generation;
- __u32 slot_offset;
- __u32 recno;
- __u32 flags;
- uuid_t uuid;
- struct presto_version remote_version;
-};
-
-#ifdef __KERNEL__
-# include <linux/smp.h>
-# include <linux/fsfilter.h>
-# include <linux/mount.h>
-# include <linux/slab.h>
-# include <linux/vmalloc.h>
-# include <linux/smp_lock.h>
-
-/* fixups for fs.h */
-# ifndef fs_down
-# define fs_down(sem) down(sem)
-# endif
-
-# ifndef fs_up
-# define fs_up(sem) up(sem)
-# endif
-
-# define KML_IDLE 0
-# define KML_DECODE 1
-# define KML_OPTIMIZE 2
-# define KML_REINT 3
-
-# define KML_OPEN_REINT 0x0100
-# define KML_REINT_BEGIN 0x0200
-# define KML_BACKFETCH 0x0400
-# define KML_REINT_END 0x0800
-# define KML_CLOSE_REINT 0x1000
-# define KML_REINT_MAXBUF (64 * 1024)
-
-# define CACHE_CLIENT_RO 0x4
-# define CACHE_LENTO_RO 0x8
-
-/* global variables */
-extern int presto_debug;
-extern int presto_print_entry;
-extern long presto_kmemory;
-extern long presto_vmemory;
-
-# define PRESTO_DEBUG
-# ifdef PRESTO_DEBUG
-/* debugging masks */
-# define D_SUPER 1
-# define D_INODE 2
-# define D_FILE 4
-# define D_CACHE 8 /* cache debugging */
-# define D_MALLOC 16 /* print malloc, de-alloc information */
-# define D_JOURNAL 32
-# define D_UPCALL 64 /* up and downcall debugging */
-# define D_PSDEV 128
-# define D_PIOCTL 256
-# define D_SPECIAL 512
-# define D_TIMING 1024
-# define D_DOWNCALL 2048
-# define D_KML 4096
-# define D_FSDATA 8192
-
-# define CDEBUG(mask, format, a...) \
- do { \
- if (presto_debug & mask) { \
- printk("(%s:%s,l. %d %d): " format, __FILE__, \
- __FUNCTION__, __LINE__, current->pid \
- , ## a); \
- } \
- } while (0)
-
-#define CERROR(format, a...) \
-do { \
- printk("(%s:%s,l. %d %d): " format, __FILE__, __FUNCTION__, \
- __LINE__, current->pid , ## a); \
-} while (0)
-
-# define ENTRY \
- if (presto_print_entry) \
- printk("Process %d entered %s\n", current->pid, __FUNCTION__)
-
-# define EXIT \
- if (presto_print_entry) \
- printk("Process %d leaving %s at %d\n", current->pid, \
- __FUNCTION__, __LINE__)
-
-# define presto_kmem_inc(ptr, size) presto_kmemory += (size)
-# define presto_kmem_dec(ptr, size) presto_kmemory -= (size)
-# define presto_vmem_inc(ptr, size) presto_vmemory += (size)
-# define presto_vmem_dec(ptr, size) presto_vmemory -= (size)
-# else /* !PRESTO_DEBUG */
-# define CDEBUG(mask, format, a...) do {} while (0)
-# define ENTRY do {} while (0)
-# define EXIT do {} while (0)
-# define presto_kmem_inc(ptr, size) do {} while (0)
-# define presto_kmem_dec(ptr, size) do {} while (0)
-# define presto_vmem_inc(ptr, size) do {} while (0)
-# define presto_vmem_dec(ptr, size) do {} while (0)
-# endif /* PRESTO_DEBUG */
-
-
-struct run_ctxt {
- struct vfsmount *pwdmnt;
- struct dentry *pwd;
- struct vfsmount *rootmnt;
- struct dentry *root;
- uid_t fsuid;
- gid_t fsgid;
- mm_segment_t fs;
- struct group_info * group_info;
-/* int ngroups;
- gid_t groups[NGROUPS];*/
-
-};
-
-static inline void push_ctxt(struct run_ctxt *save, struct run_ctxt *new)
-{
- save->fs = get_fs();
- save->pwd = dget(current->fs->pwd);
- save->pwdmnt = mntget(current->fs->pwdmnt);
- save->fsgid = current->fsgid;
- save->fsuid = current->fsuid;
- save->root = current->fs->root;
- save->rootmnt = current->fs->rootmnt;
- save->group_info = current->group_info;
-/* save->ngroups = current->ngroups;
- for (i = 0; i< current->ngroups; i++)
- save->groups[i] = current->groups[i];*/
-
- set_fs(new->fs);
- lock_kernel();
- set_fs_pwd(current->fs, new->pwdmnt, new->pwd);
- if (new->root)
- set_fs_root(current->fs, new->rootmnt, new->root);
- unlock_kernel();
- current->fsuid = new->fsuid;
- current->fsgid = new->fsgid;
- /*if (new->ngroups > 0) {
- current->ngroups = new->ngroups;
- for (i = 0; i< new->ngroups; i++)
- current->groups[i] = new->groups[i];
- }*/
- current->group_info = new->group_info;
-
-}
-
-static inline void pop_ctxt(struct run_ctxt *saved)
-{
- set_fs(saved->fs);
- lock_kernel();
- set_fs_pwd(current->fs, saved->pwdmnt, saved->pwd);
- if (saved->root)
- set_fs_root(current->fs, saved->rootmnt, saved->root);
- unlock_kernel();
- current->fsuid = saved->fsuid;
- current->fsgid = saved->fsgid;
- current->group_info = saved->group_info;
-/*
- current->ngroups = saved->ngroups;
- for (i = 0; i< saved->ngroups; i++)
- current->groups[i] = saved->groups[i];
-*/
- mntput(saved->pwdmnt);
- dput(saved->pwd);
-}
-
-static inline struct presto_dentry_data *presto_d2d(struct dentry *dentry)
-{
- return (struct presto_dentry_data *)(dentry->d_fsdata);
-}
-
-struct presto_cache {
- spinlock_t cache_lock;
- loff_t cache_reserved;
- struct vfsmount *cache_vfsmount;
- struct super_block *cache_sb;
- struct dentry *cache_root;
- struct list_head cache_chain; /* for the dev/cache hash */
-
- int cache_flags;
-
- char *cache_type; /* filesystem type of cache */
- struct filter_fs *cache_filter;
-
- struct upc_channel *cache_psdev; /* points to channel used */
- struct list_head cache_channel_list;
- struct list_head cache_fset_list; /* filesets mounted in cache */
-};
-
-struct presto_log_fd {
- rwlock_t fd_lock;
- loff_t fd_offset; /* offset where next record should go */
- struct file *fd_file;
- int fd_truncating;
- unsigned int fd_recno; /* last recno written */
- struct list_head fd_reservations;
-};
-
-/* file sets */
-# define CHUNK_BITS 16
-
-struct presto_file_set {
- struct list_head fset_list;
- struct presto_log_fd fset_kml;
- struct presto_log_fd fset_lml;
- struct presto_log_fd fset_rcvd;
- struct list_head *fset_clients; /* cache of clients */
- struct dentry *fset_dentry;
- struct vfsmount *fset_mnt;
- struct presto_cache *fset_cache;
-
- unsigned int fset_lento_recno; /* last recno mentioned to lento */
- loff_t fset_lento_off; /* last offset mentioned to lento */
- loff_t fset_kml_logical_off; /* logical offset of kml file byte 0 */
- char * fset_name;
-
- int fset_flags;
- int fset_chunkbits;
- char *fset_reint_buf; /* temporary buffer holds kml during reint */
-
- spinlock_t fset_permit_lock;
- int fset_permit_count;
- int fset_permit_upcall_count;
- /* This queue is used both for processes waiting for the kernel to give
- * up the permit as well as processes waiting for the kernel to be given
- * the permit, depending on the state of FSET_HASPERMIT. */
- wait_queue_head_t fset_permit_queue;
-
- loff_t fset_file_maxio; /* writing more than this causes a close */
- unsigned long int kml_truncate_size;
-};
-
-/* This is the default number of bytes written before a close is recorded*/
-#define FSET_DEFAULT_MAX_FILEIO (1024<<10)
-
-struct dentry *presto_tmpfs_ilookup(struct inode *dir, struct dentry *dentry,
- ino_t ino, unsigned int generation);
-struct dentry *presto_iget_ilookup(struct inode *dir, struct dentry *dentry,
- ino_t ino, unsigned int generation);
-struct dentry *presto_add_ilookup_dentry(struct dentry *parent,
- struct dentry *real);
-
-struct journal_ops {
- int (*tr_all_data)(struct inode *);
- loff_t (*tr_avail)(struct presto_cache *fset, struct super_block *);
- void *(*tr_start)(struct presto_file_set *, struct inode *, int op);
- void (*tr_commit)(struct presto_file_set *, void *handle);
- void (*tr_journal_data)(struct inode *);
- struct dentry *(*tr_ilookup)(struct inode *dir, struct dentry *dentry, ino_t ino, unsigned int generation);
- struct dentry *(*tr_add_ilookup)(struct dentry *parent, struct dentry *real);
-};
-
-extern struct journal_ops presto_ext2_journal_ops;
-extern struct journal_ops presto_ext3_journal_ops;
-extern struct journal_ops presto_tmpfs_journal_ops;
-extern struct journal_ops presto_xfs_journal_ops;
-extern struct journal_ops presto_reiserfs_journal_ops;
-extern struct journal_ops presto_obdfs_journal_ops;
-
-# define LENTO_FL_KML 0x0001
-# define LENTO_FL_EXPECT 0x0002
-# define LENTO_FL_VFSCHECK 0x0004
-# define LENTO_FL_JUSTLOG 0x0008
-# define LENTO_FL_WRITE_KML 0x0010
-# define LENTO_FL_CANCEL_LML 0x0020
-# define LENTO_FL_WRITE_EXPECT 0x0040
-# define LENTO_FL_IGNORE_TIME 0x0080
-# define LENTO_FL_TOUCH_PARENT 0x0100
-# define LENTO_FL_TOUCH_NEWOBJ 0x0200
-# define LENTO_FL_SET_DDFILEID 0x0400
-
-struct presto_cache *presto_get_cache(struct inode *inode);
-int presto_sprint_mounts(char *buf, int buflen, int minor);
-struct presto_file_set *presto_fset(struct dentry *de);
-int presto_journal(struct dentry *dentry, char *buf, size_t size);
-int presto_fwrite(struct file *file, const char *str, int len, loff_t *off);
-int presto_ispresto(struct inode *);
-
-/* super.c */
-extern struct file_system_type presto_fs_type;
-extern int init_intermezzo_fs(void);
-
-/* fileset.c */
-extern int izo_prepare_fileset(struct dentry *root, char *fsetname);
-char * izo_make_path(struct presto_file_set *fset, char *name);
-struct file *izo_fset_open(struct presto_file_set *fset, char *name, int flags, int mode);
-
-/* psdev.c */
-int izo_psdev_get_free_channel(void);
-int presto_psdev_init(void);
-int izo_psdev_setpid(int minor);
-extern void presto_psdev_cleanup(void);
-int presto_lento_up(int minor);
-int izo_psdev_setchannel(struct file *file, int fd);
-
-/* inode.c */
-extern struct super_operations presto_super_ops;
-void presto_set_ops(struct inode *inode, struct filter_fs *filter);
-
-/* dcache.c */
-void presto_frob_dop(struct dentry *de);
-char *presto_path(struct dentry *dentry, struct dentry *root,
- char *buffer, int buflen);
-struct presto_dentry_data *izo_alloc_ddata(void);
-int presto_set_dd(struct dentry *);
-int presto_init_ddata_cache(void);
-void presto_cleanup_ddata_cache(void);
-extern struct dentry_operations presto_dentry_ops;
-
-/* dir.c */
-extern struct inode_operations presto_dir_iops;
-extern struct inode_operations presto_file_iops;
-extern struct inode_operations presto_sym_iops;
-extern struct file_operations presto_dir_fops;
-extern struct file_operations presto_file_fops;
-extern struct file_operations presto_sym_fops;
-int presto_setattr(struct dentry *de, struct iattr *iattr);
-int presto_settime(struct presto_file_set *fset, struct dentry *newobj,
- struct dentry *parent, struct dentry *target,
- struct lento_vfs_context *ctx, int valid);
-int presto_ioctl(struct inode *inode, struct file *file,
- unsigned int cmd, unsigned long arg);
-
-extern int presto_ilookup_uid;
-# define PRESTO_ILOOKUP_MAGIC "...ino:"
-# define PRESTO_ILOOKUP_SEP ':'
-int izo_dentry_is_ilookup(struct dentry *, ino_t *id, unsigned int *generation);
-struct dentry *presto_lookup(struct inode * dir, struct dentry *dentry, struct nameidata *nd);
-
-struct presto_dentry_data {
- int dd_count; /* how mnay dentries are using this dentry */
- struct presto_file_set *dd_fset;
- struct dentry *dd_inodentry;
- loff_t dd_kml_offset;
- int dd_flags;
- __u64 remote_ino;
- __u64 remote_generation;
-};
-
-struct presto_file_data {
- int fd_do_lml;
- loff_t fd_lml_offset;
- size_t fd_bytes_written;
- /* authorization related data of file at open time */
- uid_t fd_uid;
- gid_t fd_gid;
- mode_t fd_mode;
- /* identification data of calling process */
- uid_t fd_fsuid;
- gid_t fd_fsgid;
- int fd_ngroups;
- gid_t fd_groups[NGROUPS_SMALL];
- /* information how to complete the close operation */
- struct lento_vfs_context fd_info;
- struct presto_version fd_version;
-};
-
-/* presto.c and Lento::Downcall */
-
-int presto_walk(const char *name, struct nameidata *nd);
-int izo_clear_fsetroot(struct dentry *dentry);
-int izo_clear_all_fsetroots(struct presto_cache *cache);
-int presto_get_kmlsize(char *path, __u64 *size);
-int presto_get_lastrecno(char *path, off_t *size);
-int presto_set_fsetroot(struct dentry *dentry, char *fsetname,
- unsigned int flags);
-int presto_set_fsetroot_from_ioc(struct dentry *dentry, char *fsetname,
- unsigned int flags);
-int presto_is_read_only(struct presto_file_set *);
-int presto_truncate_lml(struct presto_file_set *fset);
-int lento_write_lml(char *path,
- __u64 remote_ino,
- __u32 remote_generation,
- __u32 remote_version,
- struct presto_version *remote_file_version);
-int lento_complete_closes(char *path);
-int presto_f2m(struct presto_file_set *fset);
-int presto_prep(struct dentry *, struct presto_cache **,
- struct presto_file_set **);
-/* cache.c */
-extern struct presto_cache *presto_cache_init(void);
-extern void presto_cache_add(struct presto_cache *cache);
-extern void presto_cache_init_hash(void);
-
-struct presto_cache *presto_cache_find(struct super_block *sb);
-
-#define PRESTO_REQLOW (3 * 4096)
-#define PRESTO_REQHIGH (6 * 4096)
-void presto_release_space(struct presto_cache *cache, loff_t req);
-int presto_reserve_space(struct presto_cache *cache, loff_t req);
-
-#define PRESTO_DATA 0x00000002 /* cached data is valid */
-#define PRESTO_ATTR 0x00000004 /* attributes cached */
-#define PRESTO_DONT_JOURNAL 0x00000008 /* things like .intermezzo/ */
-
-struct presto_file_set *presto_path2fileset(const char *name);
-int izo_revoke_permit(struct dentry *, uuid_t uuid);
-int presto_chk(struct dentry *dentry, int flag);
-void presto_set(struct dentry *dentry, int flag);
-int presto_get_permit(struct inode *inode);
-int presto_put_permit(struct inode *inode);
-int presto_set_max_kml_size(const char *path, unsigned long max_size);
-int izo_mark_dentry(struct dentry *dentry, int and, int or, int *res);
-int izo_mark_cache(struct dentry *dentry, int and_bits, int or_bits, int *);
-int izo_mark_fset(struct dentry *dentry, int and_bits, int or_bits, int *);
-void presto_getversion(struct presto_version *pv, struct inode *inode);
-int presto_i2m(struct inode *inode);
-int presto_c2m(struct presto_cache *cache);
-
-
-/* file.c */
-int izo_purge_file(struct presto_file_set *fset, char *file);
-int presto_adjust_lml(struct file *file, struct lento_vfs_context *info);
-
-/* journal.c */
-struct rec_info {
- loff_t offset;
- int size;
- int recno;
- int is_kml;
-};
-
-void presto_trans_commit(struct presto_file_set *fset, void *handle);
-void *presto_trans_start(struct presto_file_set *fset, struct inode *inode,
- int op);
-int presto_fread(struct file *file, char *str, int len, loff_t *off);
-int presto_clear_lml_close(struct presto_file_set *fset,
- loff_t lml_offset);
-int presto_complete_lml(struct presto_file_set *fset);
-int presto_read_kml_logical_offset(struct rec_info *recinfo,
- struct presto_file_set *fset);
-int presto_write_kml_logical_offset(struct presto_file_set *fset);
-struct file *presto_copy_kml_tail(struct presto_file_set *fset,
- unsigned long int start);
-int presto_finish_kml_truncate(struct presto_file_set *fset,
- unsigned long int offset);
-int izo_lookup_file(struct presto_file_set *fset, char *path,
- struct nameidata *nd);
-int izo_do_truncate(struct presto_file_set *fset, struct dentry *dentry,
- loff_t length, loff_t size_check);
-int izo_log_close(struct presto_log_fd *logfd);
-struct file *izo_log_open(struct presto_file_set *fset, char *name, int flags);
-int izo_init_kml_file(struct presto_file_set *, struct presto_log_fd *);
-int izo_init_lml_file(struct presto_file_set *, struct presto_log_fd *);
-int izo_init_last_rcvd_file(struct presto_file_set *, struct presto_log_fd *);
-
-/* vfs.c */
-
-/* Extra data needed in the KML for rollback operations; this structure is
- * passed around during the KML-writing process. */
-struct izo_rollback_data {
- __u32 rb_mode;
- __u32 rb_rdev;
- __u64 rb_uid;
- __u64 rb_gid;
-};
-
-int presto_write_last_rcvd(struct rec_info *recinfo,
- struct presto_file_set *fset,
- struct lento_vfs_context *info);
-void izo_get_rollback_data(struct inode *inode, struct izo_rollback_data *rb);
-int presto_do_close(struct presto_file_set *fset, struct file *file);
-int presto_do_setattr(struct presto_file_set *fset, struct dentry *dentry,
- struct iattr *iattr, struct lento_vfs_context *info);
-int presto_do_create(struct presto_file_set *fset, struct dentry *dir,
- struct dentry *dentry, int mode,
- struct lento_vfs_context *info);
-int presto_do_link(struct presto_file_set *fset, struct dentry *dir,
- struct dentry *old_dentry, struct dentry *new_dentry,
- struct lento_vfs_context *info);
-int presto_do_unlink(struct presto_file_set *fset, struct dentry *dir,
- struct dentry *dentry, struct lento_vfs_context *info);
-int presto_do_symlink(struct presto_file_set *fset, struct dentry *dir,
- struct dentry *dentry, const char *name,
- struct lento_vfs_context *info);
-int presto_do_mkdir(struct presto_file_set *fset, struct dentry *dir,
- struct dentry *dentry, int mode,
- struct lento_vfs_context *info);
-int presto_do_rmdir(struct presto_file_set *fset, struct dentry *dir,
- struct dentry *dentry, struct lento_vfs_context *info);
-int presto_do_mknod(struct presto_file_set *fset, struct dentry *dir,
- struct dentry *dentry, int mode, dev_t dev,
- struct lento_vfs_context *info);
-int do_rename(struct presto_file_set *fset, struct dentry *old_dir,
- struct dentry *old_dentry, struct dentry *new_dir,
- struct dentry *new_dentry, struct lento_vfs_context *info);
-int presto_do_statfs (struct presto_file_set *fset,
- struct kstatfs * buf);
-
-int lento_setattr(const char *name, struct iattr *iattr,
- struct lento_vfs_context *info);
-int lento_create(const char *name, int mode, struct lento_vfs_context *info);
-int lento_link(const char *oldname, const char *newname,
- struct lento_vfs_context *info);
-int lento_unlink(const char *name, struct lento_vfs_context *info);
-int lento_symlink(const char *oldname,const char *newname,
- struct lento_vfs_context *info);
-int lento_mkdir(const char *name, int mode, struct lento_vfs_context *info);
-int lento_rmdir(const char *name, struct lento_vfs_context *info);
-int lento_mknod(const char *name, int mode, dev_t dev,
- struct lento_vfs_context *info);
-int lento_rename(const char *oldname, const char *newname,
- struct lento_vfs_context *info);
-int lento_iopen(const char *name, ino_t ino, unsigned int generation,int flags);
-
-/* journal.c */
-
-#define JOURNAL_PAGE_SZ PAGE_SIZE
-
-int presto_no_journal(struct presto_file_set *fset);
-int journal_fetch(int minor);
-int presto_log(struct presto_file_set *fset, struct rec_info *rec,
- const char *buf, size_t size,
- const char *string1, int len1,
- const char *string2, int len2,
- const char *string3, int len3);
-int presto_get_fileid(int minor, struct presto_file_set *fset,
- struct dentry *dentry);
-int presto_journal_setattr(struct rec_info *rec, struct presto_file_set *fset,
- struct dentry *dentry, struct presto_version *old_ver,
- struct izo_rollback_data *, struct iattr *iattr);
-int presto_journal_create(struct rec_info *rec, struct presto_file_set *fset,
- struct dentry *dentry,
- struct presto_version *tgt_dir_ver,
- struct presto_version *new_file_ver, int mode);
-int presto_journal_link(struct rec_info *rec, struct presto_file_set *fset,
- struct dentry *src, struct dentry *tgt,
- struct presto_version *tgt_dir_ver,
- struct presto_version *new_link_ver);
-int presto_journal_unlink(struct rec_info *rec, struct presto_file_set *fset,
- struct dentry *dir,
- struct presto_version *tgt_dir_ver,
- struct presto_version *old_file_ver,
- struct izo_rollback_data *, struct dentry *dentry,
- char *old_target, int old_targetlen);
-int presto_journal_symlink(struct rec_info *rec, struct presto_file_set *fset,
- struct dentry *dentry, const char *target,
- struct presto_version *tgt_dir_ver,
- struct presto_version *new_link_ver);
-int presto_journal_mkdir(struct rec_info *rec, struct presto_file_set *fset,
- struct dentry *dentry,
- struct presto_version *tgt_dir_ver,
- struct presto_version *new_dir_ver, int mode);
-int presto_journal_rmdir(struct rec_info *rec, struct presto_file_set *fset,
- struct dentry *dentry,
- struct presto_version *tgt_dir_ver,
- struct presto_version *old_dir_ver,
- struct izo_rollback_data *, int len, const char *name);
-int presto_journal_mknod(struct rec_info *rec, struct presto_file_set *fset,
- struct dentry *dentry,
- struct presto_version *tgt_dir_ver,
- struct presto_version *new_node_ver, int mode,
- int dmajor, int dminor);
-int presto_journal_rename(struct rec_info *rec, struct presto_file_set *fset,
- struct dentry *src, struct dentry *tgt,
- struct presto_version *src_dir_ver,
- struct presto_version *tgt_dir_ver);
-int presto_journal_open(struct rec_info *, struct presto_file_set *,
- struct dentry *, struct presto_version *old_ver);
-int presto_journal_close(struct rec_info *rec, struct presto_file_set *,
- struct presto_file_data *, struct dentry *,
- struct presto_version *old_file_ver,
- struct presto_version *new_file_ver);
-int presto_write_lml_close(struct rec_info *rec,
- struct presto_file_set *fset,
- struct file *file,
- __u64 remote_ino,
- __u64 remote_generation,
- struct presto_version *remote_version,
- struct presto_version *new_file_ver);
-void presto_log_op(void *data, int len);
-loff_t presto_kml_offset(struct presto_file_set *fset);
-
-/* upcall.c */
-#define SYNCHRONOUS 0
-#define ASYNCHRONOUS 1
-/* asynchronous calls */
-int izo_upc_kml(int minor, __u64 offset, __u32 first_recno, __u64 length,
- __u32 last_recno, char *fsetname);
-int izo_upc_kml_truncate(int minor, __u64 length, __u32 last_recno,
- char *fsetname);
-int izo_upc_go_fetch_kml(int minor, char *fsetname, uuid_t uuid, __u64 kmlsize);
-int izo_upc_backfetch(int minor, char *path, char *fileset,
- struct lento_vfs_context *);
-
-/* synchronous calls */
-int izo_upc_get_fileid(int minor, __u32 reclen, char *rec,
- __u32 pathlen, char *path, char *fsetname);
-int izo_upc_permit(int minor, struct dentry *, __u32 pathlen, char *path,
- char *fset);
-int izo_upc_open(int minor, __u32 pathlen, char *path, char *fsetname,
- struct lento_vfs_context *info);
-int izo_upc_connect(int minor, __u64 ip_address, __u64 port, __u8 uuid[16],
- int client_flag);
-int izo_upc_revoke_permit(int minor, char *fsetname, uuid_t uuid);
-int izo_upc_set_kmlsize(int minor, char *fsetname, uuid_t uuid, __u64 kmlsize);
-int izo_upc_client_make_branch(int minor, char *fsetname);
-int izo_upc_server_make_branch(int minor, char *fsetname);
-int izo_upc_branch_undo(int minor, char *fsetname, char *branchname);
-int izo_upc_branch_redo(int minor, char *fsetname, char *branchname);
-int izo_upc_repstatus(int minor, char * fsetname, struct izo_rcvd_rec *lr_server);
-
-/* general mechanism */
-int izo_upc_upcall(int minor, int *size, struct izo_upcall_hdr *, int async);
-
-/* replicator.c */
-int izo_repstatus(struct presto_file_set *fset, __u64 client_kmlsize,
- struct izo_rcvd_rec *lr_client, struct izo_rcvd_rec *lr_server);
-int izo_rep_cache_init(struct presto_file_set *);
-loff_t izo_rcvd_get(struct izo_rcvd_rec *, struct presto_file_set *, char *uuid);
-loff_t izo_rcvd_write(struct presto_file_set *, struct izo_rcvd_rec *);
-loff_t izo_rcvd_upd_remote(struct presto_file_set *fset, char * uuid, __u64 remote_recno,
- __u64 remote_offset);
-
-int izo_ioctl_packlen(struct izo_ioctl_data *data);
-
-/* sysctl.c */
-int init_intermezzo_sysctl(void);
-void cleanup_intermezzo_sysctl(void);
-
-/* ext_attr.c */
-/* We will be more tolerant than the default ea patch with attr name sizes and
- * the size of value. If these come via VFS from the default ea patches, the
- * corresponding character strings will be truncated anyway. During journalling- * we journal length for both name and value. See journal_set_ext_attr.
- */
-#define PRESTO_EXT_ATTR_NAME_MAX 128
-#define PRESTO_EXT_ATTR_VALUE_MAX 8192
-
-#define PRESTO_ALLOC(ptr, size) \
-do { \
- long s = (size); \
- (ptr) = kmalloc(s, GFP_KERNEL); \
- if ((ptr) == NULL) \
- CERROR("IZO: out of memory at %s:%d (trying to " \
- "allocate %ld)\n", __FILE__, __LINE__, s); \
- else { \
- presto_kmem_inc((ptr), s); \
- memset((ptr), 0, s); \
- } \
- CDEBUG(D_MALLOC, "kmalloced: %ld at %p (tot %ld).\n", \
- s, (ptr), presto_kmemory); \
-} while (0)
-
-#define PRESTO_FREE(ptr, size) \
-do { \
- long s = (size); \
- if ((ptr) == NULL) { \
- CERROR("IZO: free NULL pointer (%ld bytes) at " \
- "%s:%d\n", s, __FILE__, __LINE__); \
- break; \
- } \
- kfree(ptr); \
- CDEBUG(D_MALLOC, "kfreed: %ld at %p (tot %ld).\n", \
- s, (ptr), presto_kmemory); \
- presto_kmem_dec((ptr), s); \
-} while (0)
-
-static inline int dentry_name_cmp(struct dentry *dentry, char *name)
-{
- return (strlen(name) == dentry->d_name.len &&
- memcmp(name, dentry->d_name.name, dentry->d_name.len) == 0);
-}
-
-static inline char *strdup(char *str)
-{
- char *tmp;
- tmp = kmalloc(strlen(str) + 1, GFP_KERNEL);
- if (tmp)
- memcpy(tmp, str, strlen(str) + 1);
-
- return tmp;
-}
-
-static inline int izo_ioctl_is_invalid(struct izo_ioctl_data *data)
-{
- if (data->ioc_len > (1<<30)) {
- CERROR("IZO ioctl: ioc_len larger than 1<<30\n");
- return 1;
- }
- if (data->ioc_inllen1 > (1<<30)) {
- CERROR("IZO ioctl: ioc_inllen1 larger than 1<<30\n");
- return 1;
- }
- if (data->ioc_inllen2 > (1<<30)) {
- CERROR("IZO ioctl: ioc_inllen2 larger than 1<<30\n");
- return 1;
- }
- if (data->ioc_inlbuf1 && !data->ioc_inllen1) {
- CERROR("IZO ioctl: inlbuf1 pointer but 0 length\n");
- return 1;
- }
- if (data->ioc_inlbuf2 && !data->ioc_inllen2) {
- CERROR("IZO ioctl: inlbuf2 pointer but 0 length\n");
- return 1;
- }
- if (data->ioc_pbuf1 && !data->ioc_plen1) {
- CERROR("IZO ioctl: pbuf1 pointer but 0 length\n");
- return 1;
- }
- if (data->ioc_pbuf2 && !data->ioc_plen2) {
- CERROR("IZO ioctl: pbuf2 pointer but 0 length\n");
- return 1;
- }
- if (izo_ioctl_packlen(data) != data->ioc_len ) {
- CERROR("IZO ioctl: packlen exceeds ioc_len\n");
- return 1;
- }
- if (data->ioc_inllen1 &&
- data->ioc_bulk[data->ioc_inllen1 - 1] != '\0') {
- CERROR("IZO ioctl: inlbuf1 not 0 terminated\n");
- return 1;
- }
- if (data->ioc_inllen2 &&
- data->ioc_bulk[size_round(data->ioc_inllen1) + data->ioc_inllen2
- - 1] != '\0') {
- CERROR("IZO ioctl: inlbuf2 not 0 terminated\n");
- return 1;
- }
- return 0;
-}
-
-/* buffer MUST be at least the size of izo_ioctl_hdr */
-static inline int izo_ioctl_getdata(char *buf, char *end, void *arg)
-{
- struct izo_ioctl_hdr *hdr;
- struct izo_ioctl_data *data;
- int err;
- ENTRY;
-
- hdr = (struct izo_ioctl_hdr *)buf;
- data = (struct izo_ioctl_data *)buf;
-
- err = copy_from_user(buf, (void *)arg, sizeof(*hdr));
- if ( err ) {
- EXIT;
- return err;
- }
-
- if (hdr->ioc_version != IZO_IOCTL_VERSION) {
- CERROR("IZO: version mismatch kernel vs application\n");
- return -EINVAL;
- }
-
- if (hdr->ioc_len + buf >= end) {
- CERROR("IZO: user buffer exceeds kernel buffer\n");
- return -EINVAL;
- }
-
- if (hdr->ioc_len < sizeof(struct izo_ioctl_data)) {
- CERROR("IZO: user buffer too small for ioctl\n");
- return -EINVAL;
- }
-
- err = copy_from_user(buf, (void *)arg, hdr->ioc_len);
- if ( err ) {
- EXIT;
- return err;
- }
-
- if (izo_ioctl_is_invalid(data)) {
- CERROR("IZO: ioctl not correctly formatted\n");
- return -EINVAL;
- }
-
- if (data->ioc_inllen1) {
- data->ioc_inlbuf1 = &data->ioc_bulk[0];
- }
-
- if (data->ioc_inllen2) {
- data->ioc_inlbuf2 = &data->ioc_bulk[0] +
- size_round(data->ioc_inllen1);
- }
-
- EXIT;
- return 0;
-}
-
-# define MYPATHLEN(buffer, path) ((buffer) + PAGE_SIZE - (path))
-
-# define free kfree
-# define malloc(a) kmalloc(a, GFP_KERNEL)
-# define printf printk
-int kml_reint_rec(struct file *dir, struct izo_ioctl_data *data);
-int izo_get_fileid(struct file *dir, struct izo_ioctl_data *data);
-int izo_set_fileid(struct file *dir, struct izo_ioctl_data *data);
-
-#else /* __KERNEL__ */
-# include <stdlib.h>
-# include <stdio.h>
-# include <sys/types.h>
-# include <sys/ioctl.h>
-# include <string.h>
-
-# define printk printf
-# ifndef CERROR
-# define CERROR printf
-# endif
-# define kmalloc(a,b) malloc(a)
-
-void init_fsreintdata (void);
-int kml_fsreint(struct kml_rec *rec, char *basedir);
-int kml_iocreint(__u32 size, char *ptr, __u32 offset, int dird,
- uuid_t uuid, __u32 generate_kml);
-
-static inline void izo_ioctl_init(struct izo_ioctl_data *data)
-{
- memset(data, 0, sizeof(*data));
- data->ioc_len = sizeof(*data);
- data->ioc_version = IZO_IOCTL_VERSION;
-}
-
-static inline int
-izo_ioctl_pack(struct izo_ioctl_data *data, char **pbuf, int max)
-{
- char *ptr;
- struct izo_ioctl_data *overlay;
- data->ioc_len = izo_ioctl_packlen(data);
- data->ioc_version = IZO_IOCTL_VERSION;
-
- if (*pbuf && izo_ioctl_packlen(data) > max)
- return 1;
- if (*pbuf == NULL)
- *pbuf = malloc(data->ioc_len);
- if (*pbuf == NULL)
- return 1;
- overlay = (struct izo_ioctl_data *)*pbuf;
- memcpy(*pbuf, data, sizeof(*data));
-
- ptr = overlay->ioc_bulk;
- if (data->ioc_inlbuf1)
- LOGL(data->ioc_inlbuf1, data->ioc_inllen1, ptr);
- if (data->ioc_inlbuf2)
- LOGL(data->ioc_inlbuf2, data->ioc_inllen2, ptr);
- if (izo_ioctl_is_invalid(overlay))
- return 1;
-
- return 0;
-}
-
-#endif /* __KERNEL__*/
-
-#define IZO_ERROR_NAME 1
-#define IZO_ERROR_UPDATE 2
-#define IZO_ERROR_DELETE 3
-#define IZO_ERROR_RENAME 4
-
-static inline char *izo_error(int err)
-{
-#ifndef __KERNEL__
- if (err <= 0)
- return strerror(-err);
-#endif
- switch (err) {
- case IZO_ERROR_NAME:
- return "InterMezzo name/name conflict";
- case IZO_ERROR_UPDATE:
- return "InterMezzo update/update conflict";
- case IZO_ERROR_DELETE:
- return "InterMezzo update/delete conflict";
- case IZO_ERROR_RENAME:
- return "InterMezzo rename/rename conflict";
- }
- return "Unknown InterMezzo error";
-}
-
-/* kml_unpack.c */
-char *kml_print_rec(struct kml_rec *rec, int brief);
-int kml_unpack(struct kml_rec *rec, char **buf, char *end);
-
-/* fs 2.5 compat */
-
-/* is_read_only() is replaced by bdev_read_only which takes struct
- block_device *. Since this is only needed for debugging, it can be
- safely ignored now.
-*/
-#define is_read_only(dev) 0
-
-#endif
+++ /dev/null
-/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
- * vim:expandtab:shiftwidth=8:tabstop=8:
- *
- * Copyright (C) 2001, 2002 Cluster File Systems, Inc.
- * Copyright (C) 2001 Tacit Networks, Inc.
- *
- * This file is part of InterMezzo, http://www.inter-mezzo.org.
- *
- * InterMezzo is free software; you can redistribute it and/or
- * modify it under the terms of version 2 of the GNU General Public
- * License as published by the Free Software Foundation.
- *
- * InterMezzo is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with InterMezzo; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- */
-
-#ifndef __INTERMEZZO_IDL_H__
-#define __INTERMEZZO_IDL_H__
-
-#include <linux/ioctl.h>
-#include <linux/types.h>
-
-/* this file contains all data structures used in InterMezzo's interfaces:
- * - upcalls
- * - ioctl's
- * - KML records
- * - RCVD records
- * - rpc's
- */
-
-/* UPCALL */
-#define INTERMEZZO_MINOR 248
-
-
-#define IZO_UPC_VERSION 0x00010002
-#define IZO_UPC_PERMIT 1
-#define IZO_UPC_CONNECT 2
-#define IZO_UPC_GO_FETCH_KML 3
-#define IZO_UPC_OPEN 4
-#define IZO_UPC_REVOKE_PERMIT 5
-#define IZO_UPC_KML 6
-#define IZO_UPC_BACKFETCH 7
-#define IZO_UPC_KML_TRUNC 8
-#define IZO_UPC_SET_KMLSIZE 9
-#define IZO_UPC_BRANCH_UNDO 10
-#define IZO_UPC_BRANCH_REDO 11
-#define IZO_UPC_GET_FILEID 12
-#define IZO_UPC_CLIENT_MAKE_BRANCH 13
-#define IZO_UPC_SERVER_MAKE_BRANCH 14
-#define IZO_UPC_REPSTATUS 15
-
-#define IZO_UPC_LARGEST_OPCODE 15
-
-struct izo_upcall_hdr {
- __u32 u_len;
- __u32 u_version;
- __u32 u_opc;
- __u32 u_uniq;
- __u32 u_pid;
- __u32 u_uid;
- __u32 u_pathlen;
- __u32 u_fsetlen;
- __u64 u_offset;
- __u64 u_length;
- __u32 u_first_recno;
- __u32 u_last_recno;
- __u32 u_async;
- __u32 u_reclen;
- __u8 u_uuid[16];
-};
-
-/* This structure _must_ sit at the beginning of the buffer */
-struct izo_upcall_resp {
- __u32 opcode;
- __u32 unique;
- __u32 result;
-};
-
-
-/* IOCTL */
-
-#define IZO_IOCTL_VERSION 0x00010003
-
-/* maximum size supported for ioc_pbuf1 */
-#define KML_MAX_BUF (64*1024)
-
-struct izo_ioctl_hdr {
- __u32 ioc_len;
- __u32 ioc_version;
-};
-
-struct izo_ioctl_data {
- __u32 ioc_len;
- __u32 ioc_version;
- __u32 ioc_izodev;
- __u32 ioc_kmlrecno;
- __u64 ioc_kmlsize;
- __u32 ioc_flags;
- __s32 ioc_inofd;
- __u64 ioc_ino;
- __u64 ioc_generation;
- __u32 ioc_mark_what;
- __u32 ioc_and_flag;
- __u32 ioc_or_flag;
- __u32 ioc_dev;
- __u32 ioc_offset;
- __u32 ioc_slot;
- __u64 ioc_uid;
- __u8 ioc_uuid[16];
-
- __u32 ioc_inllen1; /* path */
- char *ioc_inlbuf1;
- __u32 ioc_inllen2; /* fileset */
- char *ioc_inlbuf2;
-
- __u32 ioc_plen1; /* buffers in user space (KML) */
- char *ioc_pbuf1;
- __u32 ioc_plen2; /* buffers in user space (KML) */
- char *ioc_pbuf2;
-
- char ioc_bulk[0];
-};
-
-#define IZO_IOC_DEVICE _IOW ('p',0x50, void *)
-#define IZO_IOC_REINTKML _IOW ('p',0x51, void *)
-#define IZO_IOC_GET_RCVD _IOW ('p',0x52, void *)
-#define IZO_IOC_SET_IOCTL_UID _IOW ('p',0x53, void *)
-#define IZO_IOC_GET_KML_SIZE _IOW ('p',0x54, void *)
-#define IZO_IOC_PURGE_FILE_DATA _IOW ('p',0x55, void *)
-#define IZO_IOC_CONNECT _IOW ('p',0x56, void *)
-#define IZO_IOC_GO_FETCH_KML _IOW ('p',0x57, void *)
-#define IZO_IOC_MARK _IOW ('p',0x58, void *)
-#define IZO_IOC_CLEAR_FSET _IOW ('p',0x59, void *)
-#define IZO_IOC_CLEAR_ALL_FSETS _IOW ('p',0x60, void *)
-#define IZO_IOC_SET_FSET _IOW ('p',0x61, void *)
-#define IZO_IOC_REVOKE_PERMIT _IOW ('p',0x62, void *)
-#define IZO_IOC_SET_KMLSIZE _IOW ('p',0x63, void *)
-#define IZO_IOC_CLIENT_MAKE_BRANCH _IOW ('p',0x64, void *)
-#define IZO_IOC_SERVER_MAKE_BRANCH _IOW ('p',0x65, void *)
-#define IZO_IOC_BRANCH_UNDO _IOW ('p',0x66, void *)
-#define IZO_IOC_BRANCH_REDO _IOW ('p',0x67, void *)
-#define IZO_IOC_SET_PID _IOW ('p',0x68, void *)
-#define IZO_IOC_SET_CHANNEL _IOW ('p',0x69, void *)
-#define IZO_IOC_GET_CHANNEL _IOW ('p',0x70, void *)
-#define IZO_IOC_GET_FILEID _IOW ('p',0x71, void *)
-#define IZO_IOC_ADJUST_LML _IOW ('p',0x72, void *)
-#define IZO_IOC_SET_FILEID _IOW ('p',0x73, void *)
-#define IZO_IOC_REPSTATUS _IOW ('p',0x74, void *)
-
-/* marking flags for fsets */
-#define FSET_CLIENT_RO 0x00000001
-#define FSET_LENTO_RO 0x00000002
-#define FSET_HASPERMIT 0x00000004 /* we have a permit to WB */
-#define FSET_INSYNC 0x00000008 /* this fileset is in sync */
-#define FSET_PERMIT_WAITING 0x00000010 /* Lento is waiting for permit */
-#define FSET_STEAL_PERMIT 0x00000020 /* take permit if Lento is dead */
-#define FSET_JCLOSE_ON_WRITE 0x00000040 /* Journal closes on writes */
-#define FSET_DATA_ON_DEMAND 0x00000080 /* update data on file_open() */
-#define FSET_PERMIT_EXCLUSIVE 0x00000100 /* only one permitholder allowed */
-#define FSET_HAS_BRANCHES 0x00000200 /* this fileset contains branches */
-#define FSET_IS_BRANCH 0x00000400 /* this fileset is a branch */
-#define FSET_FLAT_BRANCH 0x00000800 /* this fileset is ROOT with branches */
-
-/* what to mark indicator (ioctl parameter) */
-#define MARK_DENTRY 101
-#define MARK_FSET 102
-#define MARK_CACHE 103
-#define MARK_GETFL 104
-
-/* KML */
-
-#define KML_MAJOR_VERSION 0x00010000
-#define KML_MINOR_VERSION 0x00000002
-#define KML_OPCODE_NOOP 0
-#define KML_OPCODE_CREATE 1
-#define KML_OPCODE_MKDIR 2
-#define KML_OPCODE_UNLINK 3
-#define KML_OPCODE_RMDIR 4
-#define KML_OPCODE_CLOSE 5
-#define KML_OPCODE_SYMLINK 6
-#define KML_OPCODE_RENAME 7
-#define KML_OPCODE_SETATTR 8
-#define KML_OPCODE_LINK 9
-#define KML_OPCODE_OPEN 10
-#define KML_OPCODE_MKNOD 11
-#define KML_OPCODE_WRITE 12
-#define KML_OPCODE_RELEASE 13
-#define KML_OPCODE_TRUNC 14
-#define KML_OPCODE_SETEXTATTR 15
-#define KML_OPCODE_DELEXTATTR 16
-#define KML_OPCODE_KML_TRUNC 17
-#define KML_OPCODE_GET_FILEID 18
-#define KML_OPCODE_NUM 19
-/* new stuff */
-struct presto_version {
- __u32 pv_mtime_sec;
- __u32 pv_mtime_nsec;
- __u32 pv_ctime_sec;
- __u32 pv_ctime_nsec;
- __u64 pv_size;
-};
-
-struct kml_prefix_hdr {
- __u32 len;
- __u32 version;
- __u32 pid;
- __u32 auid;
- __u32 fsuid;
- __u32 fsgid;
- __u32 opcode;
- __u32 ngroups;
-};
-
-struct kml_prefix {
- struct kml_prefix_hdr *hdr;
- __u32 *groups;
-};
-
-struct kml_suffix {
- __u32 prevrec;
- __u32 recno;
- __u32 time;
- __u32 len;
-};
-
-struct kml_rec {
- char *buf;
- struct kml_prefix prefix;
- __u64 offset;
- char *path;
- int pathlen;
- char *name;
- int namelen;
- char *target;
- int targetlen;
- struct presto_version *old_objectv;
- struct presto_version *new_objectv;
- struct presto_version *old_parentv;
- struct presto_version *new_parentv;
- struct presto_version *old_targetv;
- struct presto_version *new_targetv;
- __u32 valid;
- __u32 mode;
- __u32 uid;
- __u32 gid;
- __u64 size;
- __u32 mtime_sec;
- __u32 mtime_nsec;
- __u32 ctime_sec;
- __u32 ctime_nsec;
- __u32 flags;
- __u32 ino;
- __u32 rdev;
- __u32 major;
- __u32 minor;
- __u32 generation;
- __u32 old_mode;
- __u32 old_rdev;
- __u64 old_uid;
- __u64 old_gid;
- char *old_target;
- int old_targetlen;
- struct kml_suffix *suffix;
-};
-
-
-/* RCVD */
-
-/* izo_rcvd_rec fills the .intermezzo/fset/last_rcvd file and provides data about
- * our view of reintegration offsets for a given peer.
- *
- * The only exception is the last_rcvd record which has a UUID consisting of all
- * zeroes; this record's lr_local_offset field is the logical byte offset of our
- * KML, which is updated when KML truncation takes place. All other fields are
- * reserved. */
-
-/* XXX - document how clean shutdowns are recorded */
-
-struct izo_rcvd_rec {
- __u8 lr_uuid[16]; /* which peer? */
- __u64 lr_remote_recno; /* last confirmed remote recno */
- __u64 lr_remote_offset; /* last confirmed remote offset */
- __u64 lr_local_recno; /* last locally reinted recno */
- __u64 lr_local_offset; /* last locally reinted offset */
- __u64 lr_last_ctime; /* the largest ctime that has reintegrated */
-};
-
-/* Cache purge database
- *
- * Each DB entry is this structure followed by the path name, no trailing NUL. */
-struct izo_purge_entry {
- __u64 p_atime;
- __u32 p_pathlen;
-};
-
-/* RPC */
-
-#endif
+++ /dev/null
-#ifndef __PRESTO_JOURNAL_H
-#define __PRESTO_JOURNAL_H
-
-
-struct journal_prefix {
- int len;
- u32 version;
- int pid;
- int uid;
- int fsuid;
- int fsgid;
- int opcode;
- u32 ngroups;
- u32 groups[0];
-};
-
-struct journal_suffix {
- unsigned long prevrec; /* offset of previous record for dentry */
- int recno;
- int time;
- int len;
-};
-
-#endif
+++ /dev/null
-#ifndef __INTERMEZZO_KML_H
-#define __INTERMEZZO_KML_H
-
-#include "intermezzo_psdev.h"
-#include <linux/fs.h>
-#include "intermezzo_journal.h"
-
-#define PRESTO_KML_MAJOR_VERSION 0x00010000
-#define PRESTO_KML_MINOR_VERSION 0x00002001
-#define PRESTO_OP_NOOP 0
-#define PRESTO_OP_CREATE 1
-#define PRESTO_OP_MKDIR 2
-#define PRESTO_OP_UNLINK 3
-#define PRESTO_OP_RMDIR 4
-#define PRESTO_OP_CLOSE 5
-#define PRESTO_OP_SYMLINK 6
-#define PRESTO_OP_RENAME 7
-#define PRESTO_OP_SETATTR 8
-#define PRESTO_OP_LINK 9
-#define PRESTO_OP_OPEN 10
-#define PRESTO_OP_MKNOD 11
-#define PRESTO_OP_WRITE 12
-#define PRESTO_OP_RELEASE 13
-#define PRESTO_OP_TRUNC 14
-#define PRESTO_OP_SETEXTATTR 15
-#define PRESTO_OP_DELEXTATTR 16
-
-#define PRESTO_LML_DONE 1 /* flag to get first write to do LML */
-#define KML_KOP_MARK 0xffff
-
-struct presto_lml_data {
- loff_t rec_offset;
-};
-
-struct big_journal_prefix {
- u32 len;
- u32 version;
- u32 pid;
- u32 uid;
- u32 fsuid;
- u32 fsgid;
- u32 opcode;
- u32 ngroups;
- u32 groups[NGROUPS_SMALL];
-};
-
-enum kml_opcode {
- KML_CREATE = 1,
- KML_MKDIR,
- KML_UNLINK,
- KML_RMDIR,
- KML_CLOSE,
- KML_SYMLINK,
- KML_RENAME,
- KML_SETATTR,
- KML_LINK,
- KML_OPEN,
- KML_MKNOD,
- KML_ENDMARK = 0xff
-};
-
-struct kml_create {
- char *path;
- struct presto_version new_objectv,
- old_parentv,
- new_parentv;
- int mode;
- int uid;
- int gid;
-};
-
-struct kml_open {
-};
-
-struct kml_mkdir {
- char *path;
- struct presto_version new_objectv,
- old_parentv,
- new_parentv;
- int mode;
- int uid;
- int gid;
-};
-
-struct kml_unlink {
- char *path,
- *name;
- struct presto_version old_tgtv,
- old_parentv,
- new_parentv;
-};
-
-struct kml_rmdir {
- char *path,
- *name;
- struct presto_version old_tgtv,
- old_parentv,
- new_parentv;
-};
-
-struct kml_close {
- int open_mode,
- open_uid,
- open_gid;
- char *path;
- struct presto_version new_objectv;
- __u64 ino;
- int generation;
-};
-
-struct kml_symlink {
- char *sourcepath,
- *targetpath;
- struct presto_version new_objectv,
- old_parentv,
- new_parentv;
- int uid;
- int gid;
-};
-
-struct kml_rename {
- char *sourcepath,
- *targetpath;
- struct presto_version old_objectv,
- new_objectv,
- old_tgtv,
- new_tgtv;
-};
-
-struct kml_setattr {
- char *path;
- struct presto_version old_objectv;
- struct iattr iattr;
-};
-
-struct kml_link {
- char *sourcepath,
- *targetpath;
- struct presto_version new_objectv,
- old_parentv,
- new_parentv;
-};
-
-struct kml_mknod {
- char *path;
- struct presto_version new_objectv,
- old_parentv,
- new_parentv;
- int mode;
- int uid;
- int gid;
- int major;
- int minor;
-};
-
-/* kml record items for optimizing */
-struct kml_kop_node
-{
- u32 kml_recno;
- u32 kml_flag;
- u32 kml_op;
- nlink_t i_nlink;
- u32 i_ino;
-};
-
-struct kml_kop_lnode
-{
- struct list_head chains;
- struct kml_kop_node node;
-};
-
-struct kml_endmark {
- u32 total;
- struct kml_kop_node *kop;
-};
-
-/* kml_flag */
-#define KML_REC_DELETE 1
-#define KML_REC_EXIST 0
-
-struct kml_optimize {
- struct list_head kml_chains;
- u32 kml_flag;
- u32 kml_op;
- nlink_t i_nlink;
- u32 i_ino;
-};
-
-struct kml_rec {
- /* attribute of this record */
- int rec_size;
- int rec_kml_offset;
-
- struct big_journal_prefix rec_head;
- union {
- struct kml_create create;
- struct kml_open open;
- struct kml_mkdir mkdir;
- struct kml_unlink unlink;
- struct kml_rmdir rmdir;
- struct kml_close close;
- struct kml_symlink symlink;
- struct kml_rename rename;
- struct kml_setattr setattr;
- struct kml_mknod mknod;
- struct kml_link link;
- struct kml_endmark endmark;
- } rec_kml;
- struct journal_suffix rec_tail;
-
- /* for kml optimize only */
- struct kml_optimize kml_optimize;
-};
-
-/* kml record items for optimizing */
-extern void kml_kop_init (struct presto_file_set *fset);
-extern void kml_kop_addrec (struct presto_file_set *fset,
- struct inode *ino, u32 op, u32 flag);
-extern int kml_kop_flush (struct presto_file_set *fset);
-
-/* defined in kml_setup.c */
-extern int kml_init (struct presto_file_set *fset);
-extern int kml_cleanup (struct presto_file_set *fset);
-
-/* defined in kml.c */
-extern int begin_kml_reint (struct file *file, unsigned long arg);
-extern int do_kml_reint (struct file *file, unsigned long arg);
-extern int end_kml_reint (struct file *file, unsigned long arg);
-
-/* kml_utils.c */
-extern char *dlogit (void *tbuf, const void *sbuf, int size);
-extern char * bdup_printf (char *format, ...);
-
-/* defined in kml_decode.c */
-/* printop */
-#define PRINT_KML_PREFIX 0x1
-#define PRINT_KML_SUFFIX 0x2
-#define PRINT_KML_REC 0x4
-#define PRINT_KML_OPTIMIZE 0x8
-#define PRINT_KML_EXIST 0x10
-#define PRINT_KML_DELETE 0x20
-extern void kml_printrec (struct kml_rec *rec, int printop);
-extern int print_allkmlrec (struct list_head *head, int printop);
-extern int delete_kmlrec (struct list_head *head);
-extern int kml_decoderec (char *buf, int pos, int buflen, int *size,
- struct kml_rec **newrec);
-extern int decode_kmlrec (struct list_head *head, char *kml_buf, int buflen);
-extern void kml_freerec (struct kml_rec *rec);
-
-/* defined in kml_reint.c */
-#define KML_CLOSE_BACKFETCH 1
-extern int kml_reintbuf (struct kml_fsdata *kml_fsdata,
- char *mtpt, struct kml_rec **rec);
-
-/* defined in kml_setup.c */
-extern int kml_init (struct presto_file_set *fset);
-extern int kml_cleanup (struct presto_file_set *fset);
-
-#endif
-
+++ /dev/null
-/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
- * vim:expandtab:shiftwidth=8:tabstop=8:
- *
- * Copyright (C) 2001 Cluster File Systems, Inc. <braam@clusterfs.com>
- *
- * This file is part of InterMezzo, http://www.inter-mezzo.org.
- *
- * InterMezzo is free software; you can redistribute it and/or
- * modify it under the terms of version 2 of the GNU General Public
- * License as published by the Free Software Foundation.
- *
- * InterMezzo is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with InterMezzo; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- *
- * Data structures unpacking/packing macros & inlines
- *
- */
-
-#ifndef _INTERMEZZO_LIB_H
-#define _INTERMEZZO_LIB_H
-
-#ifdef __KERNEL__
-# include <linux/types.h>
-#else
-# include <string.h>
-# include <sys/types.h>
-#endif
-
-static inline int size_round (int val)
-{
- return (val + 3) & (~0x3);
-}
-
-static inline int size_round0(int val)
-{
- if (!val)
- return 0;
- return (val + 1 + 3) & (~0x3);
-}
-
-static inline size_t round_strlen(char *fset)
-{
- return size_round(strlen(fset) + 1);
-}
-
-#ifdef __KERNEL__
-# define NTOH__u32(var) le32_to_cpu(var)
-# define NTOH__u64(var) le64_to_cpu(var)
-# define HTON__u32(var) cpu_to_le32(var)
-# define HTON__u64(var) cpu_to_le64(var)
-#else
-# include <glib.h>
-# define NTOH__u32(var) GUINT32_FROM_LE(var)
-# define NTOH__u64(var) GUINT64_FROM_LE(var)
-# define HTON__u32(var) GUINT32_TO_LE(var)
-# define HTON__u64(var) GUINT64_TO_LE(var)
-#endif
-
-/*
- * copy sizeof(type) bytes from pointer to var and move ptr forward.
- * return EFAULT if pointer goes beyond end
- */
-#define UNLOGV(var,type,ptr,end) \
-do { \
- var = *(type *)ptr; \
- ptr += sizeof(type); \
- if (ptr > end ) \
- return -EFAULT; \
-} while (0)
-
-/* the following two macros convert to little endian */
-/* type MUST be __u32 or __u64 */
-#define LUNLOGV(var,type,ptr,end) \
-do { \
- var = NTOH##type(*(type *)ptr); \
- ptr += sizeof(type); \
- if (ptr > end ) \
- return -EFAULT; \
-} while (0)
-
-/* now log values */
-#define LOGV(var,type,ptr) \
-do { \
- *((type *)ptr) = var; \
- ptr += sizeof(type); \
-} while (0)
-
-/* and in network order */
-#define LLOGV(var,type,ptr) \
-do { \
- *((type *)ptr) = HTON##type(var); \
- ptr += sizeof(type); \
-} while (0)
-
-
-/*
- * set var to point at (type *)ptr, move ptr forward with sizeof(type)
- * return from function with EFAULT if ptr goes beyond end
- */
-#define UNLOGP(var,type,ptr,end) \
-do { \
- var = (type *)ptr; \
- ptr += sizeof(type); \
- if (ptr > end ) \
- return -EFAULT; \
-} while (0)
-
-#define LOGP(var,type,ptr) \
-do { \
- memcpy(ptr, var, sizeof(type)); \
- ptr += sizeof(type); \
-} while (0)
-
-/*
- * set var to point at (char *)ptr, move ptr forward by size_round(len);
- * return from function with EFAULT if ptr goes beyond end
- */
-#define UNLOGL(var,type,len,ptr,end) \
-do { \
- if (len == 0) \
- var = (type *)0; \
- else { \
- var = (type *)ptr; \
- ptr += size_round(len * sizeof(type)); \
- } \
- if (ptr > end ) \
- return -EFAULT; \
-} while (0)
-
-#define UNLOGL0(var,type,len,ptr,end) \
-do { \
- UNLOGL(var,type,len+1,ptr,end); \
- if ( *((char *)ptr - size_round(len+1) + len) != '\0') \
- return -EFAULT; \
-} while (0)
-
-#define LOGL(var,len,ptr) \
-do { \
- size_t __fill = size_round(len); \
- /* Prevent data leakage. */ \
- if (__fill > 0) \
- memset((char *)ptr, 0, __fill); \
- memcpy((char *)ptr, (const char *)var, len); \
- ptr += __fill; \
-} while (0)
-
-#define LOGL0(var,len,ptr) \
-do { \
- if (!len) break; \
- memcpy((char *)ptr, (const char *)var, len); \
- *((char *)(ptr) + len) = 0; \
- ptr += size_round(len + 1); \
-} while (0)
-
-#endif /* _INTERMEZZO_LIB_H */
-
+++ /dev/null
-/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
- * vim:expandtab:shiftwidth=8:tabstop=8:
- */
-
-#ifndef __PRESTO_PSDEV_H
-#define __PRESTO_PSDEV_H
-
-#define MAX_CHANNEL 16
-#define PROCNAME_SIZE 32
-#include <linux/smp_lock.h>
-
-/* represents state of an instance reached with /dev/intermezzo */
-/* communication pending & processing queues */
-struct upc_channel {
- unsigned int uc_seq;
- wait_queue_head_t uc_waitq; /* Lento wait queue */
- struct list_head uc_pending;
- struct list_head uc_processing;
- spinlock_t uc_lock;
- int uc_pid; /* Lento's pid */
- int uc_hard; /* allows signals during upcalls */
- int uc_no_filter;
- int uc_no_journal;
- int uc_no_upcall;
- int uc_timeout; /* . sec: signals will dequeue upc */
- long uc_errorval; /* for testing I/O failures */
- struct list_head uc_cache_list;
- int uc_minor;
-};
-
-#define ISLENTO(minor) (current->pid == izo_channels[minor].uc_pid \
- || current->real_parent->pid == izo_channels[minor].uc_pid \
- || current->real_parent->real_parent->pid == izo_channels[minor].uc_pid)
-
-extern struct upc_channel izo_channels[MAX_CHANNEL];
-
-/* message types between presto filesystem in kernel */
-#define REQ_READ 1
-#define REQ_WRITE 2
-#define REQ_ASYNC 4
-#define REQ_DEAD 8
-
-struct upc_req {
- struct list_head rq_chain;
- caddr_t rq_data;
- int rq_flags;
- int rq_bufsize;
- int rq_rep_size;
- int rq_opcode; /* copied from data to save lookup */
- int rq_unique;
- wait_queue_head_t rq_sleep; /* process' wait queue */
- unsigned long rq_posttime;
-};
-
-#endif
+++ /dev/null
-/*
- * Based on cfs.h from Coda, but revamped for increased simplicity.
- * Linux modifications by Peter Braam, Aug 1996
- * Rewritten for InterMezzo
- */
-
-#ifndef _PRESTO_HEADER_
-#define _PRESTO_HEADER_
-
-
-/* upcall.c */
-#define SYNCHRONOUS 0
-#define ASYNCHRONOUS 1
-
-int lento_permit(int minor, int pathlen, int fsetnamelen, char *path, char *fset);
-int lento_opendir(int minor, int pathlen, char *path, int async);
-int lento_kml(int minor, unsigned int offset, unsigned int first_recno,
- unsigned int length, unsigned int last_recno, int namelen,
- char *fsetname);
-int lento_open(int minor, int pathlen, char *path);
-int lento_journal(int minor, char *page, int async);
-int lento_release_permit(int minor, int cookie);
-
-/*
- * Kernel <--> Lento communications.
- */
-/* upcalls */
-#define LENTO_PERMIT 1
-#define LENTO_JOURNAL 2
-#define LENTO_OPENDIR 3
-#define LENTO_OPEN 4
-#define LENTO_SIGNAL 5
-#define LENTO_KML 6
-#define LENTO_COOKIE 7
-
-/* Lento <-> Presto RPC arguments */
-struct lento_up_hdr {
- unsigned int opcode;
- unsigned int unique; /* Keep multiple outstanding msgs distinct */
- u_short pid; /* Common to all */
- u_short uid;
-};
-
-/* This structure _must_ sit at the beginning of the buffer */
-struct lento_down_hdr {
- unsigned int opcode;
- unsigned int unique;
- unsigned int result;
-};
-
-/* lento_permit: */
-struct lento_permit_in {
- struct lento_up_hdr uh;
- int pathlen;
- int fsetnamelen;
- char path[0];
-};
-struct lento_permit_out {
- struct lento_down_hdr dh;
-};
-
-
-/* lento_opendir: */
-struct lento_opendir_in {
- struct lento_up_hdr uh;
- int async;
- int pathlen;
- char path[0];
-};
-struct lento_opendir_out {
- struct lento_down_hdr dh;
-};
-
-
-/* lento_kml: */
-struct lento_kml_in {
- struct lento_up_hdr uh;
- unsigned int offset;
- unsigned int first_recno;
- unsigned int length;
- unsigned int last_recno;
- int namelen;
- char fsetname[0];
-};
-
-struct lento_kml_out {
- struct lento_down_hdr dh;
-};
-
-
-/* lento_open: */
-struct lento_open_in {
- struct lento_up_hdr uh;
- int pathlen;
- char path[0];
-};
-struct lento_open_out {
- struct lento_down_hdr dh;
-};
-
-/* lento_response_cookie */
-struct lento_response_cookie_in {
- struct lento_up_hdr uh;
- int cookie;
-};
-
-struct lento_response_cookie_out {
- struct lento_down_hdr dh;
-};
-
-
-struct lento_mknod {
- struct lento_down_hdr dh;
- int major;
- int minor;
- int mode;
- char path[0];
-};
-
-
-/* NB: every struct below begins with an up_hdr */
-union up_args {
- struct lento_up_hdr uh;
- struct lento_permit_in lento_permit;
- struct lento_open_in lento_open;
- struct lento_opendir_in lento_opendir;
- struct lento_kml_in lento_kml;
- struct lento_response_cookie_in lento_response_cookie;
-};
-
-union down_args {
- struct lento_down_hdr dh;
- struct lento_permit_out lento_permit;
- struct lento_open_out lento_open;
- struct lento_opendir_out lento_opendir;
- struct lento_kml_out lento_kml;
- struct lento_response_cookie_out lento_response_cookie;
-};
-
-#include "intermezzo_psdev.h"
-
-int lento_upcall(int minor, int read_size, int *rep_size,
- union up_args *buffer, int async,
- struct upc_req *rq );
-#endif
-
+++ /dev/null
-/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
- * vim:expandtab:shiftwidth=8:tabstop=8:
- *
- * Copyright (C) 1998 Peter J. Braam
- * Copyright (C) 2001 Cluster File Systems, Inc.
- * Copyright (C) 2001 Tacit Networks, Inc. <phil@off.net>
- *
- * Support for journalling extended attributes
- * Copyright (C) 2001 Shirish H. Phatak, Tacit Networks, Inc.
- *
- * This file is part of InterMezzo, http://www.inter-mezzo.org.
- *
- * InterMezzo is free software; you can redistribute it and/or
- * modify it under the terms of version 2 of the GNU General Public
- * License as published by the Free Software Foundation.
- *
- * InterMezzo is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with InterMezzo; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- */
-
-#include <linux/types.h>
-#include <linux/kernel.h>
-#include <linux/sched.h>
-#include <linux/fs.h>
-#include <linux/namei.h>
-#include <linux/slab.h>
-#include <linux/vmalloc.h>
-#include <linux/time.h>
-#include <linux/errno.h>
-#include <asm/segment.h>
-#include <asm/uaccess.h>
-#include <linux/string.h>
-
-#include "intermezzo_fs.h"
-#include "intermezzo_psdev.h"
-
-struct presto_reservation_data {
- unsigned int ri_recno;
- loff_t ri_offset;
- loff_t ri_size;
- struct list_head ri_list;
-};
-
-/*
- * Locking Semantics
- *
- * write lock in struct presto_log_fd:
- * - name: fd_lock
- * - required for: accessing any field in a presto_log_fd
- * - may not be held across I/O
- * -
- *
- */
-
-/*
- * reserve record space and/or atomically request state of the log
- * rec will hold the location reserved record upon return
- * this reservation will be placed in the queue
- */
-static void presto_reserve_record(struct presto_file_set *fset,
- struct presto_log_fd *fd,
- struct rec_info *rec,
- struct presto_reservation_data *rd)
-{
- int chunked_record = 0;
- ENTRY;
-
- write_lock(&fd->fd_lock);
- if ( rec->is_kml ) {
- int chunk = 1 << fset->fset_chunkbits;
- int chunk_mask = ~(chunk -1);
- loff_t boundary;
-
- boundary = (fd->fd_offset + chunk - 1) & chunk_mask;
- if ( fd->fd_offset + rec->size >= boundary ) {
- chunked_record = 1;
- fd->fd_offset = boundary;
- }
- }
-
- fd->fd_recno++;
-
- /* this moves the fd_offset back after truncation */
- if ( list_empty(&fd->fd_reservations) &&
- !chunked_record) {
- fd->fd_offset = fd->fd_file->f_dentry->d_inode->i_size;
- }
-
- rec->offset = fd->fd_offset;
- if (rec->is_kml)
- rec->offset += fset->fset_kml_logical_off;
-
- rec->recno = fd->fd_recno;
-
- /* add the reservation data to the end of the list */
- rd->ri_offset = fd->fd_offset;
- rd->ri_size = rec->size;
- rd->ri_recno = rec->recno;
- list_add(&rd->ri_list, fd->fd_reservations.prev);
-
- fd->fd_offset += rec->size;
-
- write_unlock(&fd->fd_lock);
-
- EXIT;
-}
-
-static inline void presto_release_record(struct presto_log_fd *fd,
- struct presto_reservation_data *rd)
-{
- write_lock(&fd->fd_lock);
- list_del(&rd->ri_list);
- write_unlock(&fd->fd_lock);
-}
-
-/* XXX should we ask for do_truncate to be exported? */
-int izo_do_truncate(struct presto_file_set *fset, struct dentry *dentry,
- loff_t length, loff_t size_check)
-{
- struct inode *inode = dentry->d_inode;
- int error;
- struct iattr newattrs;
-
- ENTRY;
-
- if (length < 0) {
- EXIT;
- return -EINVAL;
- }
-
- down(&inode->i_sem);
- lock_kernel();
-
- if (size_check != inode->i_size) {
- unlock_kernel();
- up(&inode->i_sem);
- EXIT;
- return -EALREADY;
- }
-
- newattrs.ia_size = length;
- newattrs.ia_valid = ATTR_SIZE | ATTR_CTIME;
-
- if (inode->i_op && inode->i_op->setattr)
- error = inode->i_op->setattr(dentry, &newattrs);
- else {
- inode_setattr(dentry->d_inode, &newattrs);
- error = 0;
- }
-
- unlock_kernel();
- up(&inode->i_sem);
- EXIT;
- return error;
-}
-
-static void presto_kml_truncate(struct presto_file_set *fset)
-{
- int rc;
- ENTRY;
-
- write_lock(&fset->fset_kml.fd_lock);
- if (fset->fset_kml.fd_truncating == 1 ) {
- write_unlock(&fset->fset_kml.fd_lock);
- EXIT;
- return;
- }
-
- fset->fset_kml.fd_truncating = 1;
- write_unlock(&fset->fset_kml.fd_lock);
-
- CERROR("islento: %d, count: %d\n",
- ISLENTO(presto_i2m(fset->fset_dentry->d_inode)),
- fset->fset_permit_count);
-
- rc = izo_upc_kml_truncate(fset->fset_cache->cache_psdev->uc_minor,
- fset->fset_lento_off, fset->fset_lento_recno,
- fset->fset_name);
-
- /* Userspace is the only permitholder now, and will retain an exclusive
- * hold on the permit until KML truncation completes. */
- /* FIXME: double check this code path now that the precise semantics of
- * fset->fset_permit_count have changed. */
-
- if (rc != 0) {
- write_lock(&fset->fset_kml.fd_lock);
- fset->fset_kml.fd_truncating = 0;
- write_unlock(&fset->fset_kml.fd_lock);
- }
-
- EXIT;
-}
-
-void *presto_trans_start(struct presto_file_set *fset, struct inode *inode,
- int op)
-{
- ENTRY;
- if ( !fset->fset_cache->cache_filter->o_trops ) {
- EXIT;
- return NULL;
- }
- EXIT;
- return fset->fset_cache->cache_filter->o_trops->tr_start
- (fset, inode, op);
-}
-
-void presto_trans_commit(struct presto_file_set *fset, void *handle)
-{
- ENTRY;
- if (!fset->fset_cache->cache_filter->o_trops ) {
- EXIT;
- return;
- }
-
- fset->fset_cache->cache_filter->o_trops->tr_commit(fset, handle);
-
- /* Check to see if the KML needs truncated. */
- if (fset->kml_truncate_size > 0 &&
- !fset->fset_kml.fd_truncating &&
- fset->fset_kml.fd_offset > fset->kml_truncate_size) {
- CDEBUG(D_JOURNAL, "kml size: %lu; truncating\n",
- (unsigned long)fset->fset_kml.fd_offset);
- presto_kml_truncate(fset);
- }
- EXIT;
-}
-
-inline int presto_no_journal(struct presto_file_set *fset)
-{
- int minor = fset->fset_cache->cache_psdev->uc_minor;
- return izo_channels[minor].uc_no_journal;
-}
-
-#define size_round(x) (((x)+3) & ~0x3)
-
-#define BUFF_FREE(buf) PRESTO_FREE(buf, PAGE_SIZE)
-#define BUFF_ALLOC(newbuf, oldbuf) \
- PRESTO_ALLOC(newbuf, PAGE_SIZE); \
- if ( !newbuf ) { \
- if (oldbuf) \
- BUFF_FREE(oldbuf); \
- return -ENOMEM; \
- }
-
-/*
- * "buflen" should be PAGE_SIZE or more.
- * Give relative path wrt to a fsetroot
- */
-char * presto_path(struct dentry *dentry, struct dentry *root,
- char *buffer, int buflen)
-{
- char * end = buffer+buflen;
- char * retval;
-
- *--end = '\0';
- buflen--;
- if (dentry->d_parent != dentry && d_unhashed(dentry)) {
- buflen -= 10;
- end -= 10;
- memcpy(end, " (deleted)", 10);
- }
-
- /* Get '/' right */
- retval = end-1;
- *retval = '/';
-
- for (;;) {
- struct dentry * parent;
- int namelen;
-
- if (dentry == root)
- break;
- parent = dentry->d_parent;
- if (dentry == parent)
- break;
- namelen = dentry->d_name.len;
- buflen -= namelen + 1;
- if (buflen < 0)
- break;
- end -= namelen;
- memcpy(end, dentry->d_name.name, namelen);
- *--end = '/';
- retval = end;
- dentry = parent;
- }
- return retval;
-}
-
-static inline char *logit(char *buf, const void *value, int size)
-{
- char *ptr = (char *)value;
-
- memcpy(buf, ptr, size);
- buf += size;
- return buf;
-}
-
-
-static inline char *
-journal_log_prefix_with_groups_and_ids(char *buf, int opcode,
- struct rec_info *rec,
- __u32 ngroups, gid_t *groups,
- __u32 fsuid, __u32 fsgid)
-{
- struct kml_prefix_hdr p;
- u32 loggroups[NGROUPS_SMALL];
-
- int i;
-
- p.len = cpu_to_le32(rec->size);
- p.version = KML_MAJOR_VERSION | KML_MINOR_VERSION;
- p.pid = cpu_to_le32(current->pid);
- p.auid = cpu_to_le32(current->uid);
- p.fsuid = cpu_to_le32(fsuid);
- p.fsgid = cpu_to_le32(fsgid);
- p.ngroups = cpu_to_le32(ngroups);
- p.opcode = cpu_to_le32(opcode);
- for (i=0 ; i < ngroups ; i++)
- loggroups[i] = cpu_to_le32((__u32) groups[i]);
-
- buf = logit(buf, &p, sizeof(struct kml_prefix_hdr));
- buf = logit(buf, &loggroups, sizeof(__u32) * ngroups);
- return buf;
-}
-
-static inline char *
-journal_log_prefix(char *buf, int opcode, struct rec_info *rec)
-{
- __u32 groups[NGROUPS_SMALL];
- int i;
-
- /* convert 16 bit gid's to 32 bit gid's */
- for (i=0; i<current->group_info->ngroups; i++)
- groups[i] = GROUP_AT(current->group_info,i);
-
- return journal_log_prefix_with_groups_and_ids(buf, opcode, rec,
- (__u32)current->group_info->ngroups,
- groups,
- (__u32)current->fsuid,
- (__u32)current->fsgid);
-}
-
-static inline char *
-journal_log_prefix_with_groups(char *buf, int opcode, struct rec_info *rec,
- __u32 ngroups, gid_t *groups)
-{
- return journal_log_prefix_with_groups_and_ids(buf, opcode, rec,
- ngroups, groups,
- (__u32)current->fsuid,
- (__u32)current->fsgid);
-}
-
-static inline char *log_dentry_version(char *buf, struct dentry *dentry)
-{
- struct presto_version version;
-
- presto_getversion(&version, dentry->d_inode);
-
- version.pv_mtime_sec = HTON__u32(version.pv_mtime_sec);
- version.pv_ctime_sec = HTON__u32(version.pv_ctime_sec);
- version.pv_mtime_nsec = HTON__u32(version.pv_mtime_nsec);
- version.pv_ctime_nsec = HTON__u32(version.pv_ctime_nsec);
- version.pv_size = HTON__u64(version.pv_size);
-
- return logit(buf, &version, sizeof(version));
-}
-
-static inline char *log_version(char *buf, struct presto_version *pv)
-{
- struct presto_version version;
-
- memcpy(&version, pv, sizeof(version));
-
- version.pv_mtime_sec = HTON__u32(version.pv_mtime_sec);
- version.pv_mtime_nsec = HTON__u32(version.pv_mtime_nsec);
- version.pv_ctime_sec = HTON__u32(version.pv_ctime_sec);
- version.pv_ctime_nsec = HTON__u32(version.pv_ctime_nsec);
- version.pv_size = HTON__u64(version.pv_size);
-
- return logit(buf, &version, sizeof(version));
-}
-
-static inline char *log_rollback(char *buf, struct izo_rollback_data *rb)
-{
- struct izo_rollback_data rollback;
-
- rollback.rb_mode = HTON__u32(rb->rb_mode);
- rollback.rb_rdev = HTON__u32(rb->rb_rdev);
- rollback.rb_uid = HTON__u64(rb->rb_uid);
- rollback.rb_gid = HTON__u64(rb->rb_gid);
-
- return logit(buf, &rollback, sizeof(rollback));
-}
-
-static inline char *journal_log_suffix(char *buf, char *log,
- struct presto_file_set *fset,
- struct dentry *dentry,
- struct rec_info *rec)
-{
- struct kml_suffix s;
- struct kml_prefix_hdr *p = (struct kml_prefix_hdr *)log;
-
-#if 0
- /* XXX needs to be done after reservation,
- disable ths until version 1.2 */
- if ( dentry ) {
- s.prevrec = cpu_to_le32(rec->offset -
- presto_d2d(dentry)->dd_kml_offset);
- presto_d2d(dentry)->dd_kml_offset = rec->offset;
- } else {
- s.prevrec = -1;
- }
-#endif
- s.prevrec = 0;
-
- /* record number needs to be filled in after reservation
- s.recno = cpu_to_le32(rec->recno); */
- s.time = cpu_to_le32(get_seconds());
- s.len = p->len;
- return logit(buf, &s, sizeof(s));
-}
-
-int izo_log_close(struct presto_log_fd *logfd)
-{
- int rc = 0;
-
- if (logfd->fd_file) {
- rc = filp_close(logfd->fd_file, 0);
- logfd->fd_file = NULL;
- } else
- CERROR("InterMezzo: %s: no filp\n", __FUNCTION__);
- if (rc != 0)
- CERROR("InterMezzo: close files: filp won't close: %d\n", rc);
-
- return rc;
-}
-
-int presto_fwrite(struct file *file, const char *str, int len, loff_t *off)
-{
- int rc;
- mm_segment_t old_fs;
- ENTRY;
-
- rc = -EINVAL;
- if ( !off ) {
- EXIT;
- return rc;
- }
-
- if ( ! file ) {
- EXIT;
- return rc;
- }
-
- if ( ! file->f_op ) {
- EXIT;
- return rc;
- }
-
- if ( ! file->f_op->write ) {
- EXIT;
- return rc;
- }
-
- old_fs = get_fs();
- set_fs(get_ds());
- rc = file->f_op->write(file, str, len, off);
- if (rc != len) {
- CERROR("presto_fwrite: wrote %d bytes instead of "
- "%d at %ld\n", rc, len, (long)*off);
- rc = -EIO;
- }
- set_fs(old_fs);
- EXIT;
- return rc;
-}
-
-int presto_fread(struct file *file, char *str, int len, loff_t *off)
-{
- int rc;
- mm_segment_t old_fs;
- ENTRY;
-
- if (len > 512)
- CERROR("presto_fread: read at %Ld for %d bytes, ino %ld\n",
- *off, len, file->f_dentry->d_inode->i_ino);
-
- rc = -EINVAL;
- if ( !off ) {
- EXIT;
- return rc;
- }
-
- if ( ! file ) {
- EXIT;
- return rc;
- }
-
- if ( ! file->f_op ) {
- EXIT;
- return rc;
- }
-
- if ( ! file->f_op->read ) {
- EXIT;
- return rc;
- }
-
- old_fs = get_fs();
- set_fs(get_ds());
- rc = file->f_op->read(file, str, len, off);
- if (rc != len) {
- CDEBUG(D_FILE, "presto_fread: read %d bytes instead of "
- "%d at %Ld\n", rc, len, *off);
- rc = -EIO;
- }
- set_fs(old_fs);
- EXIT;
- return rc;
-}
-
-loff_t presto_kml_offset(struct presto_file_set *fset)
-{
- unsigned int kml_recno;
- struct presto_log_fd *fd = &fset->fset_kml;
- loff_t offset;
- ENTRY;
-
- write_lock(&fd->fd_lock);
-
- /* Determine the largest valid offset, i.e. up until the first
- * reservation held on the file. */
- if ( !list_empty(&fd->fd_reservations) ) {
- struct presto_reservation_data *rd;
- rd = list_entry(fd->fd_reservations.next,
- struct presto_reservation_data,
- ri_list);
- offset = rd->ri_offset;
- kml_recno = rd->ri_recno;
- } else {
- offset = fd->fd_file->f_dentry->d_inode->i_size;
- kml_recno = fset->fset_kml.fd_recno;
- }
- write_unlock(&fd->fd_lock);
- return offset;
-}
-
-static int presto_kml_dispatch(struct presto_file_set *fset)
-{
- int rc = 0;
- unsigned int kml_recno;
- struct presto_log_fd *fd = &fset->fset_kml;
- loff_t offset;
- ENTRY;
-
- write_lock(&fd->fd_lock);
-
- /* Determine the largest valid offset, i.e. up until the first
- * reservation held on the file. */
- if ( !list_empty(&fd->fd_reservations) ) {
- struct presto_reservation_data *rd;
- rd = list_entry(fd->fd_reservations.next,
- struct presto_reservation_data,
- ri_list);
- offset = rd->ri_offset;
- kml_recno = rd->ri_recno;
- } else {
- offset = fd->fd_file->f_dentry->d_inode->i_size;
- kml_recno = fset->fset_kml.fd_recno;
- }
-
- if ( kml_recno < fset->fset_lento_recno ) {
- CERROR("presto_kml_dispatch: smoke is coming\n");
- write_unlock(&fd->fd_lock);
- EXIT;
- return 0;
- } else if ( kml_recno == fset->fset_lento_recno ) {
- write_unlock(&fd->fd_lock);
- EXIT;
- return 0;
- /* XXX add a further "if" here to delay the KML upcall */
-#if 0
- } else if ( kml_recno < fset->fset_lento_recno + 100) {
- write_unlock(&fd->fd_lock);
- EXIT;
- return 0;
-#endif
- }
- CDEBUG(D_PIOCTL, "fset: %s\n", fset->fset_name);
-
- rc = izo_upc_kml(fset->fset_cache->cache_psdev->uc_minor,
- fset->fset_lento_off, fset->fset_lento_recno,
- offset + fset->fset_kml_logical_off, kml_recno,
- fset->fset_name);
-
- if ( rc ) {
- write_unlock(&fd->fd_lock);
- EXIT;
- return rc;
- }
-
- fset->fset_lento_off = offset;
- fset->fset_lento_recno = kml_recno;
- write_unlock(&fd->fd_lock);
- EXIT;
- return 0;
-}
-
-int izo_lookup_file(struct presto_file_set *fset, char *path,
- struct nameidata *nd)
-{
- int error = 0;
-
- CDEBUG(D_CACHE, "looking up: %s\n", path);
-
- error = path_lookup(path, LOOKUP_PARENT, nd);
- if (error) {
- EXIT;
- return error;
- }
-
- return 0;
-}
-
-/* FIXME: this function is a mess of locking and error handling. There's got to
- * be a better way. */
-static int do_truncate_rename(struct presto_file_set *fset, char *oldname,
- char *newname)
-{
- struct dentry *old_dentry, *new_dentry;
- struct nameidata oldnd, newnd;
- char *oldpath, *newpath;
- int error;
-
- ENTRY;
-
- oldpath = izo_make_path(fset, oldname);
- if (oldpath == NULL) {
- EXIT;
- return -ENOENT;
- }
-
- newpath = izo_make_path(fset, newname);
- if (newpath == NULL) {
- error = -ENOENT;
- EXIT;
- goto exit;
- }
-
- if ((error = izo_lookup_file(fset, oldpath, &oldnd)) != 0) {
- EXIT;
- goto exit1;
- }
-
- if ((error = izo_lookup_file(fset, newpath, &newnd)) != 0) {
- EXIT;
- goto exit2;
- }
-
- lock_rename(newnd.dentry, oldnd.dentry);
- old_dentry = lookup_hash(&oldnd.last, oldnd.dentry);
- error = PTR_ERR(old_dentry);
- if (IS_ERR(old_dentry)) {
- EXIT;
- goto exit3;
- }
- error = -ENOENT;
- if (!old_dentry->d_inode) {
- EXIT;
- goto exit4;
- }
- new_dentry = lookup_hash(&newnd.last, newnd.dentry);
- error = PTR_ERR(new_dentry);
- if (IS_ERR(new_dentry)) {
- EXIT;
- goto exit4;
- }
-
- {
- extern int presto_rename(struct inode *old_dir,struct dentry *old_dentry,
- struct inode *new_dir,struct dentry *new_dentry);
- error = presto_rename(old_dentry->d_parent->d_inode, old_dentry,
- new_dentry->d_parent->d_inode, new_dentry);
- }
-
- dput(new_dentry);
- EXIT;
- exit4:
- dput(old_dentry);
- exit3:
- unlock_rename(newnd.dentry, oldnd.dentry);
- path_release(&newnd);
- exit2:
- path_release(&oldnd);
- exit1:
- PRESTO_FREE(newpath, strlen(newpath) + 1);
- exit:
- PRESTO_FREE(oldpath, strlen(oldpath) + 1);
- return error;
-}
-
-/* This function is called with the fset->fset_kml.fd_lock held */
-int presto_finish_kml_truncate(struct presto_file_set *fset,
- unsigned long int offset)
-{
- struct lento_vfs_context info;
- void *handle;
- struct file *f;
- struct dentry *dentry;
- int error = 0, len;
- struct nameidata nd;
- char *kmlpath = NULL, *smlpath = NULL;
- ENTRY;
-
- if (offset == 0) {
- /* Lento couldn't do what it needed to; abort the truncation. */
- fset->fset_kml.fd_truncating = 0;
- EXIT;
- return 0;
- }
-
- /* someone is about to write to the end of the KML; try again later. */
- if ( !list_empty(&fset->fset_kml.fd_reservations) ) {
- EXIT;
- return -EAGAIN;
- }
-
- f = presto_copy_kml_tail(fset, offset);
- if (IS_ERR(f)) {
- EXIT;
- return PTR_ERR(f);
- }
-
- /* In a single transaction:
- *
- * - unlink 'kml'
- * - rename 'kml_tmp' to 'kml'
- * - unlink 'sml'
- * - rename 'sml_tmp' to 'sml'
- * - rewrite the first record of last_rcvd with the new kml
- * offset.
- */
- handle = presto_trans_start(fset, fset->fset_dentry->d_inode,
- KML_OPCODE_KML_TRUNC);
- if (IS_ERR(handle)) {
- presto_release_space(fset->fset_cache, PRESTO_REQLOW);
- CERROR("ERROR: presto_finish_kml_truncate: no space for transaction\n");
- EXIT;
- return -ENOMEM;
- }
-
- memset(&info, 0, sizeof(info));
- info.flags = LENTO_FL_IGNORE_TIME;
-
- kmlpath = izo_make_path(fset, "kml");
- if (kmlpath == NULL) {
- error = -ENOMEM;
- CERROR("make_path failed: ENOMEM\n");
- EXIT;
- goto exit_commit;
- }
-
- if ((error = izo_lookup_file(fset, kmlpath, &nd)) != 0) {
- CERROR("izo_lookup_file(kml) failed: %d.\n", error);
- EXIT;
- goto exit_commit;
- }
- down(&nd.dentry->d_inode->i_sem);
- dentry = lookup_hash(&nd.last, nd.dentry);
- error = PTR_ERR(dentry);
- if (IS_ERR(dentry)) {
- up(&nd.dentry->d_inode->i_sem);
- path_release(&nd);
- CERROR("lookup_hash failed\n");
- EXIT;
- goto exit_commit;
- }
- error = presto_do_unlink(fset, dentry->d_parent, dentry, &info);
- dput(dentry);
- up(&nd.dentry->d_inode->i_sem);
- path_release(&nd);
-
- if (error != 0) {
- CERROR("presto_do_unlink(kml) failed: %d.\n", error);
- EXIT;
- goto exit_commit;
- }
-
- smlpath = izo_make_path(fset, "sml");
- if (smlpath == NULL) {
- error = -ENOMEM;
- CERROR("make_path() failed: ENOMEM\n");
- EXIT;
- goto exit_commit;
- }
-
- if ((error = izo_lookup_file(fset, smlpath, &nd)) != 0) {
- CERROR("izo_lookup_file(sml) failed: %d.\n", error);
- EXIT;
- goto exit_commit;
- }
- down(&nd.dentry->d_inode->i_sem);
- dentry = lookup_hash(&nd.last, nd.dentry);
- error = PTR_ERR(dentry);
- if (IS_ERR(dentry)) {
- up(&nd.dentry->d_inode->i_sem);
- path_release(&nd);
- CERROR("lookup_hash failed\n");
- EXIT;
- goto exit_commit;
- }
- error = presto_do_unlink(fset, dentry->d_parent, dentry, &info);
- dput(dentry);
- up(&nd.dentry->d_inode->i_sem);
- path_release(&nd);
-
- if (error != 0) {
- CERROR("presto_do_unlink(sml) failed: %d.\n", error);
- EXIT;
- goto exit_commit;
- }
-
- error = do_truncate_rename(fset, "kml_tmp", "kml");
- if (error != 0)
- CERROR("do_truncate_rename(kml_tmp, kml) failed: %d\n", error);
- error = do_truncate_rename(fset, "sml_tmp", "sml");
- if (error != 0)
- CERROR("do_truncate_rename(sml_tmp, sml) failed: %d\n", error);
-
- /* Write a new 'last_rcvd' record with the new KML offset */
- fset->fset_kml_logical_off += offset;
- CDEBUG(D_CACHE, "new kml_logical_offset: %Lu\n",
- fset->fset_kml_logical_off);
- if (presto_write_kml_logical_offset(fset) != 0) {
- CERROR("presto_write_kml_logical_offset failed\n");
- }
-
- presto_trans_commit(fset, handle);
-
- /* Everything was successful, so swap the KML file descriptors */
- filp_close(fset->fset_kml.fd_file, NULL);
- fset->fset_kml.fd_file = f;
- fset->fset_kml.fd_offset -= offset;
- fset->fset_kml.fd_truncating = 0;
-
- EXIT;
- return 0;
-
- exit_commit:
- presto_trans_commit(fset, handle);
- len = strlen("/.intermezzo/") + strlen(fset->fset_name) +strlen("sml");
- if (kmlpath != NULL)
- PRESTO_FREE(kmlpath, len);
- if (smlpath != NULL)
- PRESTO_FREE(smlpath, len);
- return error;
-}
-
-/* structure of an extended log record:
-
- buf-prefix buf-body [string1 [string2 [string3]]] buf-suffix
-
- note: moves offset forward
-*/
-static inline int presto_write_record(struct file *f, loff_t *off,
- const char *buf, size_t size,
- const char *string1, int len1,
- const char *string2, int len2,
- const char *string3, int len3)
-{
- size_t prefix_size;
- int rc;
-
- prefix_size = size - sizeof(struct kml_suffix);
- rc = presto_fwrite(f, buf, prefix_size, off);
- if ( rc != prefix_size ) {
- CERROR("Write error!\n");
- EXIT;
- return -EIO;
- }
-
- if ( string1 && len1 ) {
- rc = presto_fwrite(f, string1, len1, off);
- if ( rc != len1 ) {
- CERROR("Write error!\n");
- EXIT;
- return -EIO;
- }
- }
-
- if ( string2 && len2 ) {
- rc = presto_fwrite(f, string2, len2, off);
- if ( rc != len2 ) {
- CERROR("Write error!\n");
- EXIT;
- return -EIO;
- }
- }
-
- if ( string3 && len3 ) {
- rc = presto_fwrite(f, string3, len3, off);
- if ( rc != len3 ) {
- CERROR("Write error!\n");
- EXIT;
- return -EIO;
- }
- }
-
- rc = presto_fwrite(f, buf + prefix_size,
- sizeof(struct kml_suffix), off);
- if ( rc != sizeof(struct kml_suffix) ) {
- CERROR("Write error!\n");
- EXIT;
- return -EIO;
- }
- return 0;
-}
-
-
-/*
- * rec->size must be valid prior to calling this function.
- *
- * had to export this for branch_reinter in kml_reint.c
- */
-int presto_log(struct presto_file_set *fset, struct rec_info *rec,
- const char *buf, size_t size,
- const char *string1, int len1,
- const char *string2, int len2,
- const char *string3, int len3)
-{
- int rc;
- struct presto_reservation_data rd;
- loff_t offset;
- struct presto_log_fd *fd;
- struct kml_suffix *s;
- int prefix_size;
-
- ENTRY;
-
- /* buf is NULL when no_journal is in effect */
- if (!buf) {
- EXIT;
- return -EINVAL;
- }
-
- if (rec->is_kml) {
- fd = &fset->fset_kml;
- } else {
- fd = &fset->fset_lml;
- }
-
- presto_reserve_record(fset, fd, rec, &rd);
-
- if (rec->is_kml) {
- if (rec->offset < fset->fset_kml_logical_off) {
- CERROR("record with pre-trunc offset. tell phil.\n");
- BUG();
- }
- offset = rec->offset - fset->fset_kml_logical_off;
- } else {
- offset = rec->offset;
- }
-
- /* now we know the record number */
- prefix_size = size - sizeof(struct kml_suffix);
- s = (struct kml_suffix *) (buf + prefix_size);
- s->recno = cpu_to_le32(rec->recno);
-
- rc = presto_write_record(fd->fd_file, &offset, buf, size,
- string1, len1, string2, len2, string3, len3);
- if (rc) {
- CERROR("presto: error writing record to %s\n",
- rec->is_kml ? "KML" : "LML");
- return rc;
- }
- presto_release_record(fd, &rd);
-
- rc = presto_kml_dispatch(fset);
-
- EXIT;
- return rc;
-}
-
-/* read from the record at tail */
-static int presto_last_record(struct presto_log_fd *fd, loff_t *size,
- loff_t *tail_offset, __u32 *recno, loff_t tail)
-{
- struct kml_suffix suffix;
- int rc;
- loff_t zeroes;
-
- *recno = 0;
- *tail_offset = 0;
- *size = 0;
-
- if (tail < sizeof(struct kml_prefix_hdr) + sizeof(suffix)) {
- EXIT;
- return 0;
- }
-
- zeroes = tail - sizeof(int);
- while ( zeroes >= 0 ) {
- int data;
- rc = presto_fread(fd->fd_file, (char *)&data, sizeof(data),
- &zeroes);
- if ( rc != sizeof(data) ) {
- rc = -EIO;
- return rc;
- }
- if (data)
- break;
- zeroes -= 2 * sizeof(data);
- }
-
- /* zeroes at the begining of file. this is needed to prevent
- presto_fread errors -SHP
- */
- if (zeroes <= 0) return 0;
-
- zeroes -= sizeof(suffix) + sizeof(int);
- rc = presto_fread(fd->fd_file, (char *)&suffix, sizeof(suffix), &zeroes);
- if ( rc != sizeof(suffix) ) {
- EXIT;
- return rc;
- }
- if ( suffix.len > 500 ) {
- CERROR("InterMezzo: Warning long record tail at %ld, rec tail_offset at %ld (size %d)\n",
- (long) zeroes, (long)*tail_offset, suffix.len);
- }
-
- *recno = suffix.recno;
- *size = suffix.len;
- *tail_offset = zeroes;
- return 0;
-}
-
-static int izo_kml_last_recno(struct presto_log_fd *logfd)
-{
- int rc;
- loff_t size;
- loff_t tail_offset;
- int recno;
- loff_t tail = logfd->fd_file->f_dentry->d_inode->i_size;
-
- rc = presto_last_record(logfd, &size, &tail_offset, &recno, tail);
- if (rc != 0) {
- EXIT;
- return rc;
- }
-
- logfd->fd_offset = tail_offset;
- logfd->fd_recno = recno;
- CDEBUG(D_JOURNAL, "setting fset_kml->fd_recno to %d, offset %Ld\n",
- recno, tail_offset);
- EXIT;
- return 0;
-}
-
-struct file *izo_log_open(struct presto_file_set *fset, char *name, int flags)
-{
- struct presto_cache *cache = fset->fset_cache;
- struct file *f;
- int error;
- ENTRY;
-
- f = izo_fset_open(fset, name, flags, 0644);
- error = PTR_ERR(f);
- if (IS_ERR(f)) {
- EXIT;
- return f;
- }
-
- error = -EINVAL;
- if ( cache != presto_get_cache(f->f_dentry->d_inode) ) {
- CERROR("InterMezzo: %s cache does not match fset cache!\n",name);
- fset->fset_kml.fd_file = NULL;
- filp_close(f, NULL);
- f = NULL;
- EXIT;
- return f;
- }
-
- if (cache->cache_filter && cache->cache_filter->o_trops &&
- cache->cache_filter->o_trops->tr_journal_data) {
- cache->cache_filter->o_trops->tr_journal_data
- (f->f_dentry->d_inode);
- } else {
- CERROR("InterMezzo WARNING: no file data logging!\n");
- }
-
- EXIT;
-
- return f;
-}
-
-int izo_init_kml_file(struct presto_file_set *fset, struct presto_log_fd *logfd)
-{
- int error = 0;
- struct file *f;
-
- ENTRY;
- if (logfd->fd_file) {
- CDEBUG(D_INODE, "fset already has KML open\n");
- EXIT;
- return 0;
- }
-
- logfd->fd_lock = RW_LOCK_UNLOCKED;
- INIT_LIST_HEAD(&logfd->fd_reservations);
- f = izo_log_open(fset, "kml", O_RDWR | O_CREAT);
- if (IS_ERR(f)) {
- error = PTR_ERR(f);
- return error;
- }
-
- logfd->fd_file = f;
- error = izo_kml_last_recno(logfd);
-
- if (error) {
- logfd->fd_file = NULL;
- filp_close(f, NULL);
- CERROR("InterMezzo: IO error in KML of fset %s\n",
- fset->fset_name);
- EXIT;
- return error;
- }
- fset->fset_lento_off = logfd->fd_offset;
- fset->fset_lento_recno = logfd->fd_recno;
-
- EXIT;
- return error;
-}
-
-int izo_init_last_rcvd_file(struct presto_file_set *fset, struct presto_log_fd *logfd)
-{
- int error = 0;
- struct file *f;
- struct rec_info recinfo;
-
- ENTRY;
- if (logfd->fd_file != NULL) {
- CDEBUG(D_INODE, "fset already has last_rcvd open\n");
- EXIT;
- return 0;
- }
-
- logfd->fd_lock = RW_LOCK_UNLOCKED;
- INIT_LIST_HEAD(&logfd->fd_reservations);
- f = izo_log_open(fset, "last_rcvd", O_RDWR | O_CREAT);
- if (IS_ERR(f)) {
- error = PTR_ERR(f);
- return error;
- }
-
- logfd->fd_file = f;
- logfd->fd_offset = f->f_dentry->d_inode->i_size;
-
- error = izo_rep_cache_init(fset);
-
- if (presto_read_kml_logical_offset(&recinfo, fset) == 0) {
- fset->fset_kml_logical_off = recinfo.offset;
- } else {
- /* The 'last_rcvd' file doesn't contain a kml offset record,
- * probably because we just created 'last_rcvd'. Write one. */
- fset->fset_kml_logical_off = 0;
- presto_write_kml_logical_offset(fset);
- }
-
- EXIT;
- return error;
-}
-
-int izo_init_lml_file(struct presto_file_set *fset, struct presto_log_fd *logfd)
-{
- int error = 0;
- struct file *f;
-
- ENTRY;
- if (logfd->fd_file) {
- CDEBUG(D_INODE, "fset already has lml open\n");
- EXIT;
- return 0;
- }
-
- logfd->fd_lock = RW_LOCK_UNLOCKED;
- INIT_LIST_HEAD(&logfd->fd_reservations);
- f = izo_log_open(fset, "lml", O_RDWR | O_CREAT);
- if (IS_ERR(f)) {
- error = PTR_ERR(f);
- return error;
- }
-
- logfd->fd_file = f;
- logfd->fd_offset = f->f_dentry->d_inode->i_size;
-
- EXIT;
- return error;
-}
-
-/* Get the KML-offset record from the last_rcvd file */
-int presto_read_kml_logical_offset(struct rec_info *recinfo,
- struct presto_file_set *fset)
-{
- loff_t off;
- struct izo_rcvd_rec rec;
- char uuid[16] = {0};
-
- off = izo_rcvd_get(&rec, fset, uuid);
- if (off < 0)
- return -1;
-
- recinfo->offset = rec.lr_local_offset;
- return 0;
-}
-
-int presto_write_kml_logical_offset(struct presto_file_set *fset)
-{
- loff_t rc;
- struct izo_rcvd_rec rec;
- char uuid[16] = {0};
-
- rc = izo_rcvd_get(&rec, fset, uuid);
- if (rc < 0)
- memset(&rec, 0, sizeof(rec));
-
- rec.lr_local_offset =
- cpu_to_le64(fset->fset_kml_logical_off);
-
- return izo_rcvd_write(fset, &rec);
-}
-
-struct file * presto_copy_kml_tail(struct presto_file_set *fset,
- unsigned long int start)
-{
- struct file *f;
- int len;
- loff_t read_off, write_off, bytes;
-
- ENTRY;
-
- /* Copy the tail of 'kml' to 'kml_tmp' */
- f = izo_log_open(fset, "kml_tmp", O_RDWR);
- if (IS_ERR(f)) {
- EXIT;
- return f;
- }
-
- write_off = 0;
- read_off = start;
- bytes = fset->fset_kml.fd_offset - start;
- while (bytes > 0) {
- char buf[4096];
- int toread;
-
- if (bytes > sizeof(buf))
- toread = sizeof(buf);
- else
- toread = bytes;
-
- len = presto_fread(fset->fset_kml.fd_file, buf, toread,
- &read_off);
- if (len <= 0)
- break;
-
- if (presto_fwrite(f, buf, len, &write_off) != len) {
- filp_close(f, NULL);
- EXIT;
- return ERR_PTR(-EIO);
- }
-
- bytes -= len;
- }
-
- EXIT;
- return f;
-}
-
-
-/* LML records here */
-/* this writes an LML record to the LML file (rec->is_kml =0) */
-int presto_write_lml_close(struct rec_info *rec,
- struct presto_file_set *fset,
- struct file *file,
- __u64 remote_ino,
- __u64 remote_generation,
- struct presto_version *remote_version,
- struct presto_version *new_file_ver)
-{
- int opcode = KML_OPCODE_CLOSE;
- char *buffer;
- struct dentry *dentry = file->f_dentry;
- __u64 ino;
- __u32 pathlen;
- char *path;
- __u32 generation;
- int size;
- char *logrecord;
- char record[292];
- struct dentry *root;
- int error;
-
- ENTRY;
-
- if ( presto_no_journal(fset) ) {
- EXIT;
- return 0;
- }
- root = fset->fset_dentry;
-
- BUFF_ALLOC(buffer, NULL);
- path = presto_path(dentry, root, buffer, PAGE_SIZE);
- CDEBUG(D_INODE, "Path: %s\n", path);
- pathlen = cpu_to_le32(MYPATHLEN(buffer, path));
- ino = cpu_to_le64(dentry->d_inode->i_ino);
- generation = cpu_to_le32(dentry->d_inode->i_generation);
- size = sizeof(__u32) * current->group_info->ngroups +
- sizeof(struct kml_prefix_hdr) + sizeof(*new_file_ver) +
- sizeof(ino) + sizeof(generation) + sizeof(pathlen) +
- sizeof(remote_ino) + sizeof(remote_generation) +
- sizeof(remote_version) + sizeof(rec->offset) +
- sizeof(struct kml_suffix);
-
- if ( size > sizeof(record) )
- CERROR("InterMezzo: BUFFER OVERFLOW in %s!\n", __FUNCTION__);
-
- rec->is_kml = 0;
- rec->size = size + size_round(le32_to_cpu(pathlen));
-
- logrecord = journal_log_prefix(record, opcode, rec);
- logrecord = log_version(logrecord, new_file_ver);
- logrecord = logit(logrecord, &ino, sizeof(ino));
- logrecord = logit(logrecord, &generation, sizeof(generation));
- logrecord = logit(logrecord, &pathlen, sizeof(pathlen));
- logrecord = logit(logrecord, &remote_ino, sizeof(remote_ino));
- logrecord = logit(logrecord, &remote_generation,
- sizeof(remote_generation));
- logrecord = log_version(logrecord, remote_version);
- logrecord = logit(logrecord, &rec->offset, sizeof(rec->offset));
- logrecord = journal_log_suffix(logrecord, record, fset, dentry, rec);
-
- error = presto_log(fset, rec, record, size,
- path, size_round(le32_to_cpu(pathlen)),
- NULL, 0, NULL, 0);
-
- BUFF_FREE(buffer);
-
- EXIT;
- return error;
-}
-
-/*
- * Check if the given record is at the end of the file. If it is, truncate
- * the lml to the record's offset, removing it. Repeat on prior record,
- * until we reach an active record or a reserved record (as defined by the
- * reservations list).
- */
-static int presto_truncate_lml_tail(struct presto_file_set *fset)
-{
- loff_t lml_tail;
- loff_t lml_last_rec;
- loff_t lml_last_recsize;
- loff_t local_offset;
- int recno;
- struct kml_prefix_hdr prefix;
- struct inode *inode = fset->fset_lml.fd_file->f_dentry->d_inode;
- void *handle;
- int rc;
-
- ENTRY;
- /* If someone else is already truncating the LML, return. */
- write_lock(&fset->fset_lml.fd_lock);
- if (fset->fset_lml.fd_truncating == 1 ) {
- write_unlock(&fset->fset_lml.fd_lock);
- EXIT;
- return 0;
- }
- /* someone is about to write to the end of the LML */
- if ( !list_empty(&fset->fset_lml.fd_reservations) ) {
- write_unlock(&fset->fset_lml.fd_lock);
- EXIT;
- return 0;
- }
- lml_tail = fset->fset_lml.fd_file->f_dentry->d_inode->i_size;
- /* Nothing to truncate?*/
- if (lml_tail == 0) {
- write_unlock(&fset->fset_lml.fd_lock);
- EXIT;
- return 0;
- }
- fset->fset_lml.fd_truncating = 1;
- write_unlock(&fset->fset_lml.fd_lock);
-
- presto_last_record(&fset->fset_lml, &lml_last_recsize,
- &lml_last_rec, &recno, lml_tail);
- /* Do we have a record to check? If not we have zeroes at the
- beginning of the file. -SHP
- */
- if (lml_last_recsize != 0) {
- local_offset = lml_last_rec - lml_last_recsize;
- rc = presto_fread(fset->fset_lml.fd_file, (char *)&prefix,
- sizeof(prefix), &local_offset);
- if (rc != sizeof(prefix)) {
- EXIT;
- goto tr_out;
- }
-
- if ( prefix.opcode != KML_OPCODE_NOOP ) {
- EXIT;
- rc = 0;
- /* We may have zeroes at the end of the file, should
- we clear them out? -SHP
- */
- goto tr_out;
- }
- } else
- lml_last_rec=0;
-
- handle = presto_trans_start(fset, inode, KML_OPCODE_TRUNC);
- if ( IS_ERR(handle) ) {
- EXIT;
- rc = -ENOMEM;
- goto tr_out;
- }
-
- rc = izo_do_truncate(fset, fset->fset_lml.fd_file->f_dentry,
- lml_last_rec - lml_last_recsize, lml_tail);
- presto_trans_commit(fset, handle);
- if ( rc == 0 ) {
- rc = 1;
- }
- EXIT;
-
- tr_out:
- CDEBUG(D_JOURNAL, "rc = %d\n", rc);
- write_lock(&fset->fset_lml.fd_lock);
- fset->fset_lml.fd_truncating = 0;
- write_unlock(&fset->fset_lml.fd_lock);
- return rc;
-}
-
-int presto_truncate_lml(struct presto_file_set *fset)
-{
- int rc;
- ENTRY;
-
- while ( (rc = presto_truncate_lml_tail(fset)) > 0);
- if ( rc < 0 && rc != -EALREADY) {
- CERROR("truncate_lml error %d\n", rc);
- }
- EXIT;
- return rc;
-}
-
-int presto_clear_lml_close(struct presto_file_set *fset, loff_t lml_offset)
-{
- int rc;
- struct kml_prefix_hdr record;
- loff_t offset = lml_offset;
-
- ENTRY;
-
- if ( presto_no_journal(fset) ) {
- EXIT;
- return 0;
- }
-
- CDEBUG(D_JOURNAL, "reading prefix: off %ld, size %Zd\n",
- (long)lml_offset, sizeof(record));
- rc = presto_fread(fset->fset_lml.fd_file, (char *)&record,
- sizeof(record), &offset);
-
- if ( rc != sizeof(record) ) {
- CERROR("presto: clear_lml io error %d\n", rc);
- EXIT;
- return -EIO;
- }
-
- /* overwrite the prefix */
- CDEBUG(D_JOURNAL, "overwriting prefix: off %ld\n", (long)lml_offset);
- record.opcode = KML_OPCODE_NOOP;
- offset = lml_offset;
- /* note: this does just a single transaction in the cache */
- rc = presto_fwrite(fset->fset_lml.fd_file, (char *)(&record),
- sizeof(record), &offset);
- if ( rc != sizeof(record) ) {
- EXIT;
- return -EIO;
- }
-
- EXIT;
- return 0;
-}
-
-
-
-/* now a journal function for every operation */
-
-int presto_journal_setattr(struct rec_info *rec, struct presto_file_set *fset,
- struct dentry *dentry, struct presto_version *old_ver,
- struct izo_rollback_data *rb, struct iattr *iattr)
-{
- int opcode = KML_OPCODE_SETATTR;
- char *buffer, *path, *logrecord, record[316];
- struct dentry *root;
- __u32 uid, gid, mode, valid, flags, pathlen;
- __u64 fsize, mtime, ctime;
- int error, size;
-
- ENTRY;
- if ( presto_no_journal(fset) ) {
- EXIT;
- return 0;
- }
-
- if (!dentry->d_inode || (dentry->d_inode->i_nlink == 0)
- || ((dentry->d_parent != dentry) && d_unhashed(dentry))) {
- EXIT;
- return 0;
- }
-
- root = fset->fset_dentry;
-
- BUFF_ALLOC(buffer, NULL);
- path = presto_path(dentry, root, buffer, PAGE_SIZE);
- pathlen = cpu_to_le32(MYPATHLEN(buffer, path));
- size = sizeof(__u32) * current->group_info->ngroups +
- sizeof(struct kml_prefix_hdr) + sizeof(*old_ver) +
- sizeof(valid) + sizeof(mode) + sizeof(uid) + sizeof(gid) +
- sizeof(fsize) + sizeof(mtime) + sizeof(ctime) + sizeof(flags) +
- sizeof(pathlen) + sizeof(*rb) + sizeof(struct kml_suffix);
-
- if ( size > sizeof(record) )
- CERROR("InterMezzo: BUFFER OVERFLOW in %s!\n", __FUNCTION__);
-
- /* Only journal one kind of mtime, and not atime at all. Also don't
- * journal bogus data in iattr, to make the journal more compressible.
- */
- if (iattr->ia_valid & ATTR_MTIME_SET)
- iattr->ia_valid = iattr->ia_valid | ATTR_MTIME;
- valid = cpu_to_le32(iattr->ia_valid & ~(ATTR_ATIME | ATTR_MTIME_SET |
- ATTR_ATIME_SET));
- mode = iattr->ia_valid & ATTR_MODE ? cpu_to_le32(iattr->ia_mode): 0;
- uid = iattr->ia_valid & ATTR_UID ? cpu_to_le32(iattr->ia_uid): 0;
- gid = iattr->ia_valid & ATTR_GID ? cpu_to_le32(iattr->ia_gid): 0;
- fsize = iattr->ia_valid & ATTR_SIZE ? cpu_to_le64(iattr->ia_size): 0;
- mtime = iattr->ia_valid & ATTR_MTIME ? cpu_to_le64(iattr->ia_mtime.tv_sec): 0;
- ctime = iattr->ia_valid & ATTR_CTIME ? cpu_to_le64(iattr->ia_ctime.tv_sec): 0;
- flags = iattr->ia_valid & ATTR_ATTR_FLAG ?
- cpu_to_le32(iattr->ia_attr_flags): 0;
-
- rec->is_kml = 1;
- rec->size = size + size_round(le32_to_cpu(pathlen));
-
- logrecord = journal_log_prefix(record, opcode, rec);
- logrecord = log_version(logrecord, old_ver);
- logrecord = logit(logrecord, &valid, sizeof(valid));
- logrecord = logit(logrecord, &mode, sizeof(mode));
- logrecord = logit(logrecord, &uid, sizeof(uid));
- logrecord = logit(logrecord, &gid, sizeof(gid));
- logrecord = logit(logrecord, &fsize, sizeof(fsize));
- logrecord = logit(logrecord, &mtime, sizeof(mtime));
- logrecord = logit(logrecord, &ctime, sizeof(ctime));
- logrecord = logit(logrecord, &flags, sizeof(flags));
- logrecord = log_rollback(logrecord, rb);
- logrecord = logit(logrecord, &pathlen, sizeof(pathlen));
- logrecord = journal_log_suffix(logrecord, record, fset, dentry, rec);
-
- error = presto_log(fset, rec, record, size,
- path, size_round(le32_to_cpu(pathlen)),
- NULL, 0, NULL, 0);
-
- BUFF_FREE(buffer);
- EXIT;
- return error;
-}
-
-int presto_get_fileid(int minor, struct presto_file_set *fset,
- struct dentry *dentry)
-{
- int opcode = KML_OPCODE_GET_FILEID;
- struct rec_info rec;
- char *buffer, *path, *logrecord, record[4096]; /*include path*/
- struct dentry *root;
- __u32 uid, gid, pathlen;
- int error, size;
- struct kml_suffix *suffix;
-
- ENTRY;
-
- root = fset->fset_dentry;
-
- uid = cpu_to_le32(dentry->d_inode->i_uid);
- gid = cpu_to_le32(dentry->d_inode->i_gid);
- BUFF_ALLOC(buffer, NULL);
- path = presto_path(dentry, root, buffer, PAGE_SIZE);
- pathlen = cpu_to_le32(MYPATHLEN(buffer, path));
- size = sizeof(__u32) * current->group_info->ngroups +
- sizeof(struct kml_prefix_hdr) + sizeof(pathlen) +
- size_round(le32_to_cpu(pathlen)) +
- sizeof(struct kml_suffix);
-
- CDEBUG(D_FILE, "kml size: %d\n", size);
- if ( size > sizeof(record) )
- CERROR("InterMezzo: BUFFER OVERFLOW in %s!\n", __FUNCTION__);
-
- memset(&rec, 0, sizeof(rec));
- rec.is_kml = 1;
- rec.size = size;
-
- logrecord = journal_log_prefix(record, opcode, &rec);
- logrecord = logit(logrecord, &pathlen, sizeof(pathlen));
- logrecord = logit(logrecord, path, size_round(le32_to_cpu(pathlen)));
- suffix = (struct kml_suffix *)logrecord;
- logrecord = journal_log_suffix(logrecord, record, fset, dentry, &rec);
- /* journal_log_suffix expects journal_log to set this */
- suffix->recno = 0;
-
- CDEBUG(D_FILE, "actual kml size: %Zd\n", logrecord - record);
- CDEBUG(D_FILE, "get fileid: uid %d, gid %d, path: %s\n", uid, gid,path);
-
- error = izo_upc_get_fileid(minor, size, record,
- size_round(le32_to_cpu(pathlen)), path,
- fset->fset_name);
-
- BUFF_FREE(buffer);
- EXIT;
- return error;
-}
-
-int presto_journal_create(struct rec_info *rec, struct presto_file_set *fset,
- struct dentry *dentry,
- struct presto_version *tgt_dir_ver,
- struct presto_version *new_file_ver, int mode)
-{
- int opcode = KML_OPCODE_CREATE;
- char *buffer, *path, *logrecord, record[292];
- struct dentry *root;
- __u32 uid, gid, lmode, pathlen;
- int error, size;
-
- ENTRY;
- if ( presto_no_journal(fset) ) {
- EXIT;
- return 0;
- }
-
- root = fset->fset_dentry;
-
- uid = cpu_to_le32(dentry->d_inode->i_uid);
- gid = cpu_to_le32(dentry->d_inode->i_gid);
- lmode = cpu_to_le32(mode);
-
- BUFF_ALLOC(buffer, NULL);
- path = presto_path(dentry, root, buffer, PAGE_SIZE);
- pathlen = cpu_to_le32(MYPATHLEN(buffer, path));
- size = sizeof(__u32) * current->group_info->ngroups +
- sizeof(struct kml_prefix_hdr) + 3 * sizeof(*tgt_dir_ver) +
- sizeof(lmode) + sizeof(uid) + sizeof(gid) + sizeof(pathlen) +
- sizeof(struct kml_suffix);
-
- if ( size > sizeof(record) )
- CERROR("InterMezzo: BUFFER OVERFLOW in %s!\n", __FUNCTION__);
-
- rec->is_kml = 1;
- rec->size = size + size_round(le32_to_cpu(pathlen));
-
- logrecord = journal_log_prefix(record, opcode, rec);
- logrecord = log_version(logrecord, tgt_dir_ver);
- logrecord = log_dentry_version(logrecord, dentry->d_parent);
- logrecord = log_version(logrecord, new_file_ver);
- logrecord = logit(logrecord, &lmode, sizeof(lmode));
- logrecord = logit(logrecord, &uid, sizeof(uid));
- logrecord = logit(logrecord, &gid, sizeof(gid));
- logrecord = logit(logrecord, &pathlen, sizeof(pathlen));
- logrecord = journal_log_suffix(logrecord, record, fset, dentry, rec);
-
- error = presto_log(fset, rec, record, size,
- path, size_round(le32_to_cpu(pathlen)),
- NULL, 0, NULL, 0);
-
- BUFF_FREE(buffer);
- EXIT;
- return error;
-}
-
-int presto_journal_symlink(struct rec_info *rec, struct presto_file_set *fset,
- struct dentry *dentry, const char *target,
- struct presto_version *tgt_dir_ver,
- struct presto_version *new_link_ver)
-{
- int opcode = KML_OPCODE_SYMLINK;
- char *buffer, *path, *logrecord, record[292];
- struct dentry *root;
- __u32 uid, gid, pathlen;
- __u32 targetlen = cpu_to_le32(strlen(target));
- int error, size;
-
- ENTRY;
- if ( presto_no_journal(fset) ) {
- EXIT;
- return 0;
- }
-
- root = fset->fset_dentry;
-
- uid = cpu_to_le32(dentry->d_inode->i_uid);
- gid = cpu_to_le32(dentry->d_inode->i_gid);
-
- BUFF_ALLOC(buffer, NULL);
- path = presto_path(dentry, root, buffer, PAGE_SIZE);
- pathlen = cpu_to_le32(MYPATHLEN(buffer, path));
- size = sizeof(__u32) * current->group_info->ngroups +
- sizeof(struct kml_prefix_hdr) + 3 * sizeof(*tgt_dir_ver) +
- sizeof(uid) + sizeof(gid) + sizeof(pathlen) +
- sizeof(targetlen) + sizeof(struct kml_suffix);
-
- if ( size > sizeof(record) )
- CERROR("InterMezzo: BUFFER OVERFLOW in %s!\n", __FUNCTION__);
-
- rec->is_kml = 1;
- rec->size = size + size_round(le32_to_cpu(pathlen)) +
- size_round(le32_to_cpu(targetlen));
-
- logrecord = journal_log_prefix(record, opcode, rec);
- logrecord = log_version(logrecord, tgt_dir_ver);
- logrecord = log_dentry_version(logrecord, dentry->d_parent);
- logrecord = log_version(logrecord, new_link_ver);
- logrecord = logit(logrecord, &uid, sizeof(uid));
- logrecord = logit(logrecord, &gid, sizeof(gid));
- logrecord = logit(logrecord, &pathlen, sizeof(pathlen));
- logrecord = logit(logrecord, &targetlen, sizeof(targetlen));
- logrecord = journal_log_suffix(logrecord, record, fset, dentry, rec);
-
- error = presto_log(fset, rec, record, size,
- path, size_round(le32_to_cpu(pathlen)),
- target, size_round(le32_to_cpu(targetlen)),
- NULL, 0);
-
- BUFF_FREE(buffer);
- EXIT;
- return error;
-}
-
-int presto_journal_mkdir(struct rec_info *rec, struct presto_file_set *fset,
- struct dentry *dentry,
- struct presto_version *tgt_dir_ver,
- struct presto_version *new_dir_ver, int mode)
-{
- int opcode = KML_OPCODE_MKDIR;
- char *buffer, *path, *logrecord, record[292];
- struct dentry *root;
- __u32 uid, gid, lmode, pathlen;
- int error, size;
-
- ENTRY;
- if ( presto_no_journal(fset) ) {
- EXIT;
- return 0;
- }
-
- root = fset->fset_dentry;
-
- uid = cpu_to_le32(dentry->d_inode->i_uid);
- gid = cpu_to_le32(dentry->d_inode->i_gid);
- lmode = cpu_to_le32(mode);
-
- BUFF_ALLOC(buffer, NULL);
- path = presto_path(dentry, root, buffer, PAGE_SIZE);
- pathlen = cpu_to_le32(MYPATHLEN(buffer, path));
- size = sizeof(__u32) * current->group_info->ngroups +
- sizeof(struct kml_prefix_hdr) + 3 * sizeof(*tgt_dir_ver) +
- sizeof(lmode) + sizeof(uid) + sizeof(gid) + sizeof(pathlen) +
- sizeof(struct kml_suffix);
-
- if ( size > sizeof(record) )
- CERROR("InterMezzo: BUFFER OVERFLOW in %s!\n", __FUNCTION__);
-
- rec->is_kml = 1;
- rec->size = size + size_round(le32_to_cpu(pathlen));
- logrecord = journal_log_prefix(record, opcode, rec);
-
- logrecord = log_version(logrecord, tgt_dir_ver);
- logrecord = log_dentry_version(logrecord, dentry->d_parent);
- logrecord = log_version(logrecord, new_dir_ver);
- logrecord = logit(logrecord, &lmode, sizeof(lmode));
- logrecord = logit(logrecord, &uid, sizeof(uid));
- logrecord = logit(logrecord, &gid, sizeof(gid));
- logrecord = logit(logrecord, &pathlen, sizeof(pathlen));
- logrecord = journal_log_suffix(logrecord, record, fset, dentry, rec);
-
- error = presto_log(fset, rec, record, size,
- path, size_round(le32_to_cpu(pathlen)),
- NULL, 0, NULL, 0);
-
- BUFF_FREE(buffer);
- EXIT;
- return error;
-}
-
-
-int
-presto_journal_rmdir(struct rec_info *rec, struct presto_file_set *fset,
- struct dentry *dir, struct presto_version *tgt_dir_ver,
- struct presto_version *old_dir_ver,
- struct izo_rollback_data *rb, int len, const char *name)
-{
- int opcode = KML_OPCODE_RMDIR;
- char *buffer, *path, *logrecord, record[316];
- __u32 pathlen, llen;
- struct dentry *root;
- int error, size;
-
- ENTRY;
- if ( presto_no_journal(fset) ) {
- EXIT;
- return 0;
- }
-
- root = fset->fset_dentry;
-
- llen = cpu_to_le32(len);
- BUFF_ALLOC(buffer, NULL);
- path = presto_path(dir, root, buffer, PAGE_SIZE);
- pathlen = cpu_to_le32(MYPATHLEN(buffer, path));
- size = sizeof(__u32) * current->group_info->ngroups +
- sizeof(struct kml_prefix_hdr) + 3 * sizeof(*tgt_dir_ver) +
- sizeof(pathlen) + sizeof(llen) + sizeof(*rb) +
- sizeof(struct kml_suffix);
-
- if ( size > sizeof(record) )
- CERROR("InterMezzo: BUFFER OVERFLOW in %s!\n", __FUNCTION__);
-
- CDEBUG(D_JOURNAL, "path: %s (%d), name: %s (%d), size %d\n",
- path, pathlen, name, len, size);
-
- rec->is_kml = 1;
- rec->size = size + size_round(le32_to_cpu(pathlen)) +
- size_round(len);
-
- logrecord = journal_log_prefix(record, opcode, rec);
- logrecord = log_version(logrecord, tgt_dir_ver);
- logrecord = log_dentry_version(logrecord, dir);
- logrecord = log_version(logrecord, old_dir_ver);
- logrecord = logit(logrecord, rb, sizeof(*rb));
- logrecord = logit(logrecord, &pathlen, sizeof(pathlen));
- logrecord = logit(logrecord, &llen, sizeof(llen));
- logrecord = journal_log_suffix(logrecord, record, fset, dir, rec);
- error = presto_log(fset, rec, record, size,
- path, size_round(le32_to_cpu(pathlen)),
- name, size_round(len),
- NULL, 0);
-
- BUFF_FREE(buffer);
- EXIT;
- return error;
-}
-
-
-int
-presto_journal_mknod(struct rec_info *rec, struct presto_file_set *fset,
- struct dentry *dentry, struct presto_version *tgt_dir_ver,
- struct presto_version *new_node_ver, int mode,
- int dmajor, int dminor )
-{
- int opcode = KML_OPCODE_MKNOD;
- char *buffer, *path, *logrecord, record[292];
- struct dentry *root;
- __u32 uid, gid, lmode, lmajor, lminor, pathlen;
- int error, size;
-
- ENTRY;
- if ( presto_no_journal(fset) ) {
- EXIT;
- return 0;
- }
-
- root = fset->fset_dentry;
-
- uid = cpu_to_le32(dentry->d_inode->i_uid);
- gid = cpu_to_le32(dentry->d_inode->i_gid);
- lmode = cpu_to_le32(mode);
- lmajor = cpu_to_le32(dmajor);
- lminor = cpu_to_le32(dminor);
-
- BUFF_ALLOC(buffer, NULL);
- path = presto_path(dentry, root, buffer, PAGE_SIZE);
- pathlen = cpu_to_le32(MYPATHLEN(buffer, path));
- size = sizeof(__u32) * current->group_info->ngroups +
- sizeof(struct kml_prefix_hdr) + 3 * sizeof(*tgt_dir_ver) +
- sizeof(lmode) + sizeof(uid) + sizeof(gid) + sizeof(lmajor) +
- sizeof(lminor) + sizeof(pathlen) +
- sizeof(struct kml_suffix);
-
- if ( size > sizeof(record) )
- CERROR("InterMezzo: BUFFER OVERFLOW in %s!\n", __FUNCTION__);
-
- rec->is_kml = 1;
- rec->size = size + size_round(le32_to_cpu(pathlen));
-
- logrecord = journal_log_prefix(record, opcode, rec);
- logrecord = log_version(logrecord, tgt_dir_ver);
- logrecord = log_dentry_version(logrecord, dentry->d_parent);
- logrecord = log_version(logrecord, new_node_ver);
- logrecord = logit(logrecord, &lmode, sizeof(lmode));
- logrecord = logit(logrecord, &uid, sizeof(uid));
- logrecord = logit(logrecord, &gid, sizeof(gid));
- logrecord = logit(logrecord, &lmajor, sizeof(lmajor));
- logrecord = logit(logrecord, &lminor, sizeof(lminor));
- logrecord = logit(logrecord, &pathlen, sizeof(pathlen));
- logrecord = journal_log_suffix(logrecord, record, fset, dentry, rec);
-
- error = presto_log(fset, rec, record, size,
- path, size_round(le32_to_cpu(pathlen)),
- NULL, 0, NULL, 0);
-
- BUFF_FREE(buffer);
- EXIT;
- return error;
-}
-
-int
-presto_journal_link(struct rec_info *rec, struct presto_file_set *fset,
- struct dentry *src, struct dentry *tgt,
- struct presto_version *tgt_dir_ver,
- struct presto_version *new_link_ver)
-{
- int opcode = KML_OPCODE_LINK;
- char *buffer, *srcbuffer, *path, *srcpath, *logrecord, record[292];
- __u32 pathlen, srcpathlen;
- struct dentry *root;
- int error, size;
-
- ENTRY;
- if ( presto_no_journal(fset) ) {
- EXIT;
- return 0;
- }
-
- root = fset->fset_dentry;
-
- BUFF_ALLOC(srcbuffer, NULL);
- srcpath = presto_path(src, root, srcbuffer, PAGE_SIZE);
- srcpathlen = cpu_to_le32(MYPATHLEN(srcbuffer, srcpath));
-
- BUFF_ALLOC(buffer, srcbuffer);
- path = presto_path(tgt, root, buffer, PAGE_SIZE);
- pathlen = cpu_to_le32(MYPATHLEN(buffer, path));
- size = sizeof(__u32) * current->group_info->ngroups +
- sizeof(struct kml_prefix_hdr) + 3 * sizeof(*tgt_dir_ver) +
- sizeof(srcpathlen) + sizeof(pathlen) +
- sizeof(struct kml_suffix);
-
- if ( size > sizeof(record) )
- CERROR("InterMezzo: BUFFER OVERFLOW in %s!\n", __FUNCTION__);
-
- rec->is_kml = 1;
- rec->size = size + size_round(le32_to_cpu(pathlen)) +
- size_round(le32_to_cpu(srcpathlen));
-
- logrecord = journal_log_prefix(record, opcode, rec);
- logrecord = log_version(logrecord, tgt_dir_ver);
- logrecord = log_dentry_version(logrecord, tgt->d_parent);
- logrecord = log_version(logrecord, new_link_ver);
- logrecord = logit(logrecord, &srcpathlen, sizeof(srcpathlen));
- logrecord = logit(logrecord, &pathlen, sizeof(pathlen));
- logrecord = journal_log_suffix(logrecord, record, fset, tgt, rec);
-
- error = presto_log(fset, rec, record, size,
- srcpath, size_round(le32_to_cpu(srcpathlen)),
- path, size_round(le32_to_cpu(pathlen)),
- NULL, 0);
-
- BUFF_FREE(srcbuffer);
- BUFF_FREE(buffer);
- EXIT;
- return error;
-}
-
-
-int presto_journal_rename(struct rec_info *rec, struct presto_file_set *fset,
- struct dentry *src, struct dentry *tgt,
- struct presto_version *src_dir_ver,
- struct presto_version *tgt_dir_ver)
-{
- int opcode = KML_OPCODE_RENAME;
- char *buffer, *srcbuffer, *path, *srcpath, *logrecord, record[292];
- __u32 pathlen, srcpathlen;
- struct dentry *root;
- int error, size;
-
- ENTRY;
- if ( presto_no_journal(fset) ) {
- EXIT;
- return 0;
- }
-
- root = fset->fset_dentry;
-
- BUFF_ALLOC(srcbuffer, NULL);
- srcpath = presto_path(src, root, srcbuffer, PAGE_SIZE);
- srcpathlen = cpu_to_le32(MYPATHLEN(srcbuffer, srcpath));
-
- BUFF_ALLOC(buffer, srcbuffer);
- path = presto_path(tgt, root, buffer, PAGE_SIZE);
- pathlen = cpu_to_le32(MYPATHLEN(buffer, path));
- size = sizeof(__u32) * current->group_info->ngroups +
- sizeof(struct kml_prefix_hdr) + 4 * sizeof(*src_dir_ver) +
- sizeof(srcpathlen) + sizeof(pathlen) +
- sizeof(struct kml_suffix);
-
- if ( size > sizeof(record) )
- CERROR("InterMezzo: BUFFER OVERFLOW in %s!\n", __FUNCTION__);
-
- rec->is_kml = 1;
- rec->size = size + size_round(le32_to_cpu(pathlen)) +
- size_round(le32_to_cpu(srcpathlen));
-
- logrecord = journal_log_prefix(record, opcode, rec);
- logrecord = log_version(logrecord, src_dir_ver);
- logrecord = log_dentry_version(logrecord, src->d_parent);
- logrecord = log_version(logrecord, tgt_dir_ver);
- logrecord = log_dentry_version(logrecord, tgt->d_parent);
- logrecord = logit(logrecord, &srcpathlen, sizeof(srcpathlen));
- logrecord = logit(logrecord, &pathlen, sizeof(pathlen));
- logrecord = journal_log_suffix(logrecord, record, fset, tgt, rec);
-
- error = presto_log(fset, rec, record, size,
- srcpath, size_round(le32_to_cpu(srcpathlen)),
- path, size_round(le32_to_cpu(pathlen)),
- NULL, 0);
-
- BUFF_FREE(buffer);
- BUFF_FREE(srcbuffer);
- EXIT;
- return error;
-}
-
-int presto_journal_unlink(struct rec_info *rec, struct presto_file_set *fset,
- struct dentry *dir, struct presto_version *tgt_dir_ver,
- struct presto_version *old_file_ver,
- struct izo_rollback_data *rb, struct dentry *dentry,
- char *old_target, int old_targetlen)
-{
- int opcode = KML_OPCODE_UNLINK;
- char *buffer, *path, *logrecord, record[316];
- const char *name;
- __u32 pathlen, llen;
- struct dentry *root;
- int error, size, len;
-
- ENTRY;
- if ( presto_no_journal(fset) ) {
- EXIT;
- return 0;
- }
-
- root = fset->fset_dentry;
-
- name = dentry->d_name.name;
- len = dentry->d_name.len;
-
- llen = cpu_to_le32(len);
- BUFF_ALLOC(buffer, NULL);
- path = presto_path(dir, root, buffer, PAGE_SIZE);
- pathlen = cpu_to_le32(MYPATHLEN(buffer, path));
- size = sizeof(__u32) * current->group_info->ngroups +
- sizeof(struct kml_prefix_hdr) + 3 * sizeof(*tgt_dir_ver) +
- sizeof(pathlen) + sizeof(llen) + sizeof(*rb) +
- sizeof(old_targetlen) + sizeof(struct kml_suffix);
-
- if ( size > sizeof(record) )
- CERROR("InterMezzo: BUFFER OVERFLOW in %s!\n", __FUNCTION__);
-
- rec->is_kml = 1;
- rec->size = size + size_round(le32_to_cpu(pathlen)) + size_round(len) +
- size_round(old_targetlen);
-
- logrecord = journal_log_prefix(record, opcode, rec);
- logrecord = log_version(logrecord, tgt_dir_ver);
- logrecord = log_dentry_version(logrecord, dir);
- logrecord = log_version(logrecord, old_file_ver);
- logrecord = log_rollback(logrecord, rb);
- logrecord = logit(logrecord, &pathlen, sizeof(pathlen));
- logrecord = logit(logrecord, &llen, sizeof(llen));
- logrecord = logit(logrecord, &old_targetlen, sizeof(old_targetlen));
- logrecord = journal_log_suffix(logrecord, record, fset, dir, rec);
-
- error = presto_log(fset, rec, record, size,
- path, size_round(le32_to_cpu(pathlen)),
- name, size_round(len),
- old_target, size_round(old_targetlen));
-
- BUFF_FREE(buffer);
- EXIT;
- return error;
-}
-
-int
-presto_journal_close(struct rec_info *rec, struct presto_file_set *fset,
- struct presto_file_data *fd, struct dentry *dentry,
- struct presto_version *old_file_ver,
- struct presto_version *new_file_ver)
-{
- int opcode = KML_OPCODE_CLOSE;
- char *buffer, *path, *logrecord, record[316];
- struct dentry *root;
- int error, size, i;
- __u32 pathlen, generation;
- __u64 ino;
- __u32 open_fsuid;
- __u32 open_fsgid;
- __u32 open_ngroups;
- __u32 open_groups[NGROUPS_SMALL];
- __u32 open_mode;
- __u32 open_uid;
- __u32 open_gid;
-
- ENTRY;
-
- if ( presto_no_journal(fset) ) {
- EXIT;
- return 0;
- }
-
- if (!dentry->d_inode || (dentry->d_inode->i_nlink == 0)
- || ((dentry->d_parent != dentry) && d_unhashed(dentry))) {
- EXIT;
- return 0;
- }
-
- root = fset->fset_dentry;
-
- if (fd) {
- open_ngroups = fd->fd_ngroups;
- for (i = 0; i < fd->fd_ngroups; i++)
- open_groups[i] = (__u32) fd->fd_groups[i];
- open_mode = fd->fd_mode;
- open_uid = fd->fd_uid;
- open_gid = fd->fd_gid;
- open_fsuid = fd->fd_fsuid;
- open_fsgid = fd->fd_fsgid;
- } else {
- open_ngroups = current->group_info->ngroups;
- for (i=0; i<current->group_info->ngroups; i++)
- open_groups[i] = (__u32) GROUP_AT(current->group_info,i);
- open_mode = dentry->d_inode->i_mode;
- open_uid = dentry->d_inode->i_uid;
- open_gid = dentry->d_inode->i_gid;
- open_fsuid = current->fsuid;
- open_fsgid = current->fsgid;
- }
- BUFF_ALLOC(buffer, NULL);
- path = presto_path(dentry, root, buffer, PAGE_SIZE);
- pathlen = cpu_to_le32(MYPATHLEN(buffer, path));
- ino = cpu_to_le64(dentry->d_inode->i_ino);
- generation = cpu_to_le32(dentry->d_inode->i_generation);
- size = sizeof(__u32) * open_ngroups +
- sizeof(open_mode) + sizeof(open_uid) + sizeof(open_gid) +
- sizeof(struct kml_prefix_hdr) + sizeof(*old_file_ver) +
- sizeof(*new_file_ver) + sizeof(ino) + sizeof(generation) +
- sizeof(pathlen) + sizeof(struct kml_suffix);
-
- if ( size > sizeof(record) )
- CERROR("InterMezzo: BUFFER OVERFLOW in %s!\n", __FUNCTION__);
-
- rec->is_kml = 1;
- rec->size = size + size_round(le32_to_cpu(pathlen));
-
- logrecord = journal_log_prefix_with_groups_and_ids(
- record, opcode, rec, open_ngroups, open_groups,
- open_fsuid, open_fsgid);
- logrecord = logit(logrecord, &open_mode, sizeof(open_mode));
- logrecord = logit(logrecord, &open_uid, sizeof(open_uid));
- logrecord = logit(logrecord, &open_gid, sizeof(open_gid));
- logrecord = log_version(logrecord, old_file_ver);
- logrecord = log_version(logrecord, new_file_ver);
- logrecord = logit(logrecord, &ino, sizeof(ino));
- logrecord = logit(logrecord, &generation, sizeof(generation));
- logrecord = logit(logrecord, &pathlen, sizeof(pathlen));
- logrecord = journal_log_suffix(logrecord, record, fset, dentry, rec);
-
- error = presto_log(fset, rec, record, size,
- path, size_round(le32_to_cpu(pathlen)),
- NULL, 0, NULL, 0);
- BUFF_FREE(buffer);
-
- EXIT;
- return error;
-}
-
-int presto_rewrite_close(struct rec_info *rec, struct presto_file_set *fset,
- char *path, __u32 pathlen,
- int ngroups, __u32 *groups,
- __u64 ino, __u32 generation,
- struct presto_version *new_file_ver)
-{
- int opcode = KML_OPCODE_CLOSE;
- char *logrecord, record[292];
- struct dentry *root;
- int error, size;
-
- ENTRY;
-
- if ( presto_no_journal(fset) ) {
- EXIT;
- return 0;
- }
-
- root = fset->fset_dentry;
-
- size = sizeof(__u32) * ngroups +
- sizeof(struct kml_prefix_hdr) + sizeof(*new_file_ver) +
- sizeof(ino) + sizeof(generation) +
- sizeof(le32_to_cpu(pathlen)) +
- sizeof(struct kml_suffix);
-
- if ( size > sizeof(record) )
- CERROR("InterMezzo: BUFFER OVERFLOW in %s!\n", __FUNCTION__);
-
- rec->is_kml = 1;
- rec->size = size + size_round(le32_to_cpu(pathlen));
-
- logrecord = journal_log_prefix_with_groups(record, opcode, rec,
- ngroups, groups);
- logrecord = log_version(logrecord, new_file_ver);
- logrecord = logit(logrecord, &ino, sizeof(ino));
- logrecord = logit(logrecord, &generation, sizeof(generation));
- logrecord = logit(logrecord, &pathlen, sizeof(pathlen));
- logrecord = journal_log_suffix(logrecord, record, fset, NULL, rec);
-
- error = presto_log(fset, rec, record, size,
- path, size_round(le32_to_cpu(pathlen)),
- NULL, 0, NULL, 0);
-
- EXIT;
- return error;
-}
-
-
-/* write closes for the local close records in the LML */
-int presto_complete_lml(struct presto_file_set *fset)
-{
- __u32 groups[NGROUPS_SMALL];
- loff_t lml_offset;
- loff_t read_offset;
- char *buffer;
- void *handle;
- struct rec_info rec;
- struct close_rec {
- struct presto_version new_file_ver;
- __u64 ino;
- __u32 generation;
- __u32 pathlen;
- __u64 remote_ino;
- __u32 remote_generation;
- __u32 remote_version;
- __u64 lml_offset;
- } close_rec;
- struct file *file = fset->fset_lml.fd_file;
- struct kml_prefix_hdr prefix;
- int rc = 0;
- ENTRY;
-
- lml_offset = 0;
- again:
- if (lml_offset >= file->f_dentry->d_inode->i_size) {
- EXIT;
- return rc;
- }
-
- read_offset = lml_offset;
- rc = presto_fread(file, (char *)&prefix,
- sizeof(prefix), &read_offset);
- if ( rc != sizeof(prefix) ) {
- EXIT;
- CERROR("presto_complete_lml: ioerror - 1, tell Peter\n");
- return -EIO;
- }
-
- if ( prefix.opcode == KML_OPCODE_NOOP ) {
- lml_offset += prefix.len;
- goto again;
- }
-
- rc = presto_fread(file, (char *)groups,
- prefix.ngroups * sizeof(__u32), &read_offset);
- if ( rc != prefix.ngroups * sizeof(__u32) ) {
- EXIT;
- CERROR("presto_complete_lml: ioerror - 2, tell Peter\n");
- return -EIO;
- }
-
- rc = presto_fread(file, (char *)&close_rec,
- sizeof(close_rec), &read_offset);
- if ( rc != sizeof(close_rec) ) {
- EXIT;
- CERROR("presto_complete_lml: ioerror - 3, tell Peter\n");
- return -EIO;
- }
-
- /* is this a backfetch or a close record? */
- if ( le64_to_cpu(close_rec.remote_ino) != 0 ) {
- lml_offset += prefix.len;
- goto again;
- }
-
- BUFF_ALLOC(buffer, NULL);
- rc = presto_fread(file, (char *)buffer,
- le32_to_cpu(close_rec.pathlen), &read_offset);
- if ( rc != le32_to_cpu(close_rec.pathlen) ) {
- EXIT;
- CERROR("presto_complete_lml: ioerror - 4, tell Peter\n");
- return -EIO;
- }
-
- handle = presto_trans_start(fset, file->f_dentry->d_inode,
- KML_OPCODE_RELEASE);
- if ( IS_ERR(handle) ) {
- EXIT;
- return -ENOMEM;
- }
-
- rc = presto_clear_lml_close(fset, lml_offset);
- if ( rc ) {
- CERROR("error during clearing: %d\n", rc);
- presto_trans_commit(fset, handle);
- EXIT;
- return rc;
- }
-
- rc = presto_rewrite_close(&rec, fset, buffer, close_rec.pathlen,
- prefix.ngroups, groups,
- close_rec.ino, close_rec.generation,
- &close_rec.new_file_ver);
- if ( rc ) {
- CERROR("error during rewrite close: %d\n", rc);
- presto_trans_commit(fset, handle);
- EXIT;
- return rc;
- }
-
- presto_trans_commit(fset, handle);
- if ( rc ) {
- CERROR("error during truncation: %d\n", rc);
- EXIT;
- return rc;
- }
-
- lml_offset += prefix.len;
- CDEBUG(D_JOURNAL, "next LML record at: %ld\n", (long)lml_offset);
- goto again;
-
- EXIT;
- return -EINVAL;
-}
-
-
-#ifdef CONFIG_FS_EXT_ATTR
-/* Journal an ea operation. A NULL buffer implies the attribute is
- * getting deleted. In this case we simply change the opcode, but nothing
- * else is affected.
- */
-int presto_journal_set_ext_attr (struct rec_info *rec,
- struct presto_file_set *fset,
- struct dentry *dentry,
- struct presto_version *ver, const char *name,
- const char *buffer, int buffer_len,
- int flags)
-{
- int opcode = (buffer == NULL) ?
- KML_OPCODE_DELEXTATTR :
- KML_OPCODE_SETEXTATTR ;
- char *temp, *path, *logrecord, record[292];
- struct dentry *root;
- int error, size;
- __u32 namelen=cpu_to_le32(strnlen(name,PRESTO_EXT_ATTR_NAME_MAX));
- __u32 buflen=(buffer != NULL)? cpu_to_le32(buffer_len): cpu_to_le32(0);
- __u32 mode, pathlen;
-
- ENTRY;
- if ( presto_no_journal(fset) ) {
- EXIT;
- return 0;
- }
-
- if (!dentry->d_inode || (dentry->d_inode->i_nlink == 0)
- || ((dentry->d_parent != dentry) && d_unhashed(dentry))) {
- EXIT;
- return 0;
- }
-
- root = fset->fset_dentry;
-
- BUFF_ALLOC(temp, NULL);
- path = presto_path(dentry, root, temp, PAGE_SIZE);
- pathlen = cpu_to_le32(MYPATHLEN(temp, path));
-
- flags=cpu_to_le32(flags);
- /* Ugly, but needed. posix ACLs change the mode without using
- * setattr, we need to record these changes. The EA code per se
- * is not really affected.
- */
- mode=cpu_to_le32(dentry->d_inode->i_mode);
-
- size = sizeof(__u32) * current->group_info->ngroups +
- sizeof(struct kml_prefix_hdr) +
- 2 * sizeof(struct presto_version) +
- sizeof(flags) + sizeof(mode) + sizeof(namelen) +
- sizeof(buflen) + sizeof(pathlen) +
- sizeof(struct kml_suffix);
-
- if ( size > sizeof(record) )
- CERROR("InterMezzo: BUFFER OVERFLOW in %s!\n", __FUNCTION__);
-
- rec->is_kml = 1;
- /* Make space for a path, a attr name and value*/
- /* We use the buflen instead of buffer_len to make sure that we
- * journal the right length. This may be a little paranoid, but
- * with 64 bits round the corner, I would rather be safe than sorry!
- * Also this handles deletes with non-zero buffer_lengths correctly.
- * SHP
- */
- rec->size = size + size_round(le32_to_cpu(pathlen)) +
- size_round(le32_to_cpu(namelen)) +
- size_round(le32_to_cpu(buflen));
-
- logrecord = journal_log_prefix(record, opcode, rec);
- logrecord = log_version(logrecord, ver);
- logrecord = log_dentry_version(logrecord, dentry);
- logrecord = logit(logrecord, &flags, sizeof(flags));
- logrecord = logit(logrecord, &mode, sizeof(flags));
- logrecord = logit(logrecord, &pathlen, sizeof(pathlen));
- logrecord = logit(logrecord, &namelen, sizeof(namelen));
- logrecord = logit(logrecord, &buflen, sizeof(buflen));
- logrecord = journal_log_suffix(logrecord, record, fset, dentry, rec);
-
- error = presto_log(fset, rec, record, size,
- path, size_round(le32_to_cpu(pathlen)),
- name, size_round(le32_to_cpu(namelen)),
- buffer, size_round(le32_to_cpu(buflen)));
-
- BUFF_FREE(temp);
- EXIT;
- return error;
-}
-#endif
+++ /dev/null
-/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
- * vim:expandtab:shiftwidth=8:tabstop=8:
- *
- * Copyright (C) 1998 Peter J. Braam <braam@clusterfs.com>
- *
- * This file is part of InterMezzo, http://www.inter-mezzo.org.
- *
- * InterMezzo is free software; you can redistribute it and/or
- * modify it under the terms of version 2 of the GNU General Public
- * License as published by the Free Software Foundation.
- *
- * InterMezzo is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with InterMezzo; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- */
-
-#include <linux/types.h>
-#include <linux/kernel.h>
-#include <linux/sched.h>
-#include <linux/fs.h>
-#include <linux/slab.h>
-#include <linux/vmalloc.h>
-#include <linux/stat.h>
-#include <linux/errno.h>
-#include <asm/segment.h>
-#include <asm/uaccess.h>
-#include <linux/string.h>
-#include <linux/ext2_fs.h>
-
-#include "intermezzo_fs.h"
-#include "intermezzo_psdev.h"
-
-#if defined(CONFIG_EXT2_FS)
-
-/* EXT2 has no journalling, so these functions do nothing */
-static loff_t presto_e2_freespace(struct presto_cache *cache,
- struct super_block *sb)
-{
- unsigned long freebl = le32_to_cpu(EXT2_SB(sb)->s_es->s_free_blocks_count);
- unsigned long avail = freebl - le32_to_cpu(EXT2_SB(sb)->s_es->s_r_blocks_count);
- return (avail << EXT2_BLOCK_SIZE_BITS(sb));
-}
-
-/* start the filesystem journal operations */
-static void *presto_e2_trans_start(struct presto_file_set *fset, struct inode *inode, int op)
-{
- __u32 avail_kmlblocks;
-
- if ( presto_no_journal(fset) ||
- strcmp(fset->fset_cache->cache_type, "ext2"))
- return NULL;
-
- avail_kmlblocks = EXT2_SB(inode->i_sb)->s_es->s_free_blocks_count;
-
- if ( avail_kmlblocks < 3 ) {
- return ERR_PTR(-ENOSPC);
- }
-
- if ( (op != KML_OPCODE_UNLINK && op != KML_OPCODE_RMDIR)
- && avail_kmlblocks < 6 ) {
- return ERR_PTR(-ENOSPC);
- }
- return (void *) 1;
-}
-
-static void presto_e2_trans_commit(struct presto_file_set *fset, void *handle)
-{
- do {} while (0);
-}
-
-static int presto_e2_has_all_data(struct inode *inode)
-{
- BUG();
- return 0;
-}
-
-struct journal_ops presto_ext2_journal_ops = {
- .tr_all_data = presto_e2_has_all_data,
- .tr_avail = presto_e2_freespace,
- .tr_start = presto_e2_trans_start,
- .tr_commit = presto_e2_trans_commit,
- .tr_journal_data = NULL
-};
-
-#endif /* CONFIG_EXT2_FS */
+++ /dev/null
-/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
- * vim:expandtab:shiftwidth=8:tabstop=8:
- *
- * Copyright (C) 1998 Peter J. Braam <braam@clusterfs.com>
- * Copyright (C) 2000 Red Hat, Inc.
- * Copyright (C) 2000 Los Alamos National Laboratory
- * Copyright (C) 2000 TurboLinux, Inc.
- * Copyright (C) 2001 Mountain View Data, Inc.
- * Copyright (C) 2001 Tacit Networks, Inc. <phil@off.net>
- *
- * This file is part of InterMezzo, http://www.inter-mezzo.org.
- *
- * InterMezzo is free software; you can redistribute it and/or
- * modify it under the terms of version 2 of the GNU General Public
- * License as published by the Free Software Foundation.
- *
- * InterMezzo is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with InterMezzo; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- */
-
-#include <linux/types.h>
-#include <linux/param.h>
-#include <linux/kernel.h>
-#include <linux/sched.h>
-#include <linux/fs.h>
-#include <linux/slab.h>
-#include <linux/vmalloc.h>
-#include <linux/stat.h>
-#include <linux/errno.h>
-#include <asm/segment.h>
-#include <asm/uaccess.h>
-#include <linux/string.h>
-#if defined(CONFIG_EXT3_FS) || defined (CONFIG_EXT3_FS_MODULE)
-#include <linux/jbd.h>
-#include <linux/ext3_fs.h>
-#include <linux/ext3_jbd.h>
-#endif
-
-#include "intermezzo_fs.h"
-#include "intermezzo_psdev.h"
-
-#if defined(CONFIG_EXT3_FS) || defined (CONFIG_EXT3_FS_MODULE)
-
-#define MAX_PATH_BLOCKS(inode) (PATH_MAX >> EXT3_BLOCK_SIZE_BITS((inode)->i_sb))
-#define MAX_NAME_BLOCKS(inode) (NAME_MAX >> EXT3_BLOCK_SIZE_BITS((inode)->i_sb))
-
-/* space requirements:
- presto_do_truncate:
- used to truncate the KML forward to next fset->chunksize boundary
- - zero partial block
- - update inode
- presto_write_record:
- write header (< one block)
- write one path (< MAX_PATHLEN)
- possibly write another path (< MAX_PATHLEN)
- write suffix (< one block)
- presto_update_last_rcvd
- write one block
-*/
-
-static loff_t presto_e3_freespace(struct presto_cache *cache,
- struct super_block *sb)
-{
- loff_t freebl = le32_to_cpu(EXT3_SB(sb)->s_es->s_free_blocks_count);
- loff_t avail = freebl -
- le32_to_cpu(EXT3_SB(sb)->s_es->s_r_blocks_count);
- return (avail << EXT3_BLOCK_SIZE_BITS(sb));
-}
-
-/* start the filesystem journal operations */
-static void *presto_e3_trans_start(struct presto_file_set *fset,
- struct inode *inode,
- int op)
-{
- int jblocks;
- int trunc_blks, one_path_blks, extra_path_blks,
- extra_name_blks, lml_blks;
- __u32 avail_kmlblocks;
- handle_t *handle;
-
- if ( presto_no_journal(fset) ||
- strcmp(fset->fset_cache->cache_type, "ext3"))
- {
- CDEBUG(D_JOURNAL, "got cache_type \"%s\"\n",
- fset->fset_cache->cache_type);
- return NULL;
- }
-
- avail_kmlblocks = EXT3_SB(inode->i_sb)->s_es->s_free_blocks_count;
-
- if ( avail_kmlblocks < 3 ) {
- return ERR_PTR(-ENOSPC);
- }
-
- if ( (op != KML_OPCODE_UNLINK && op != KML_OPCODE_RMDIR)
- && avail_kmlblocks < 6 ) {
- return ERR_PTR(-ENOSPC);
- }
-
- /* Need journal space for:
- at least three writes to KML (two one block writes, one a path)
- possibly a second name (unlink, rmdir)
- possibly a second path (symlink, rename)
- a one block write to the last rcvd file
- */
-
- trunc_blks = EXT3_DATA_TRANS_BLOCKS + 1;
- one_path_blks = 4*EXT3_DATA_TRANS_BLOCKS + MAX_PATH_BLOCKS(inode) + 3;
- lml_blks = 4*EXT3_DATA_TRANS_BLOCKS + MAX_PATH_BLOCKS(inode) + 2;
- extra_path_blks = EXT3_DATA_TRANS_BLOCKS + MAX_PATH_BLOCKS(inode);
- extra_name_blks = EXT3_DATA_TRANS_BLOCKS + MAX_NAME_BLOCKS(inode);
-
- /* additional blocks appear for "two pathname" operations
- and operations involving the LML records
- */
- switch (op) {
- case KML_OPCODE_TRUNC:
- jblocks = one_path_blks + extra_name_blks + trunc_blks
- + EXT3_DELETE_TRANS_BLOCKS;
- break;
- case KML_OPCODE_KML_TRUNC:
- /* Hopefully this is a little better, but I'm still mostly
- * guessing here. */
- /* unlink 1 */
- jblocks = extra_name_blks + trunc_blks +
- EXT3_DELETE_TRANS_BLOCKS + 2;
-
- /* unlink 2 */
- jblocks += extra_name_blks + trunc_blks +
- EXT3_DELETE_TRANS_BLOCKS + 2;
-
- /* rename 1 */
- jblocks += 2 * extra_path_blks + trunc_blks +
- 2 * EXT3_DATA_TRANS_BLOCKS + 2 + 3;
-
- /* rename 2 */
- jblocks += 2 * extra_path_blks + trunc_blks +
- 2 * EXT3_DATA_TRANS_BLOCKS + 2 + 3;
- break;
- case KML_OPCODE_RELEASE:
- /*
- jblocks = one_path_blks + lml_blks + 2*trunc_blks;
- */
- jblocks = one_path_blks;
- break;
- case KML_OPCODE_SETATTR:
- jblocks = one_path_blks + trunc_blks + 1 ;
- break;
- case KML_OPCODE_CREATE:
- jblocks = one_path_blks + trunc_blks
- + EXT3_DATA_TRANS_BLOCKS + 3 + 2;
- break;
- case KML_OPCODE_LINK:
- jblocks = one_path_blks + trunc_blks
- + EXT3_DATA_TRANS_BLOCKS + 2;
- break;
- case KML_OPCODE_UNLINK:
- jblocks = one_path_blks + extra_name_blks + trunc_blks
- + EXT3_DELETE_TRANS_BLOCKS + 2;
- break;
- case KML_OPCODE_SYMLINK:
- jblocks = one_path_blks + extra_path_blks + trunc_blks
- + EXT3_DATA_TRANS_BLOCKS + 5;
- break;
- case KML_OPCODE_MKDIR:
- jblocks = one_path_blks + trunc_blks
- + EXT3_DATA_TRANS_BLOCKS + 4 + 2;
- break;
- case KML_OPCODE_RMDIR:
- jblocks = one_path_blks + extra_name_blks + trunc_blks
- + EXT3_DELETE_TRANS_BLOCKS + 1;
- break;
- case KML_OPCODE_MKNOD:
- jblocks = one_path_blks + trunc_blks +
- EXT3_DATA_TRANS_BLOCKS + 3 + 2;
- break;
- case KML_OPCODE_RENAME:
- jblocks = one_path_blks + extra_path_blks + trunc_blks +
- 2 * EXT3_DATA_TRANS_BLOCKS + 2 + 3;
- break;
- case KML_OPCODE_WRITE:
- jblocks = one_path_blks;
- /* add this when we can wrap our transaction with
- that of ext3_file_write (ordered writes)
- + EXT3_DATA_TRANS_BLOCKS;
- */
- break;
- default:
- CDEBUG(D_JOURNAL, "invalid operation %d for journal\n", op);
- return NULL;
- }
-
- CDEBUG(D_JOURNAL, "creating journal handle (%d blocks) for op %d\n",
- jblocks, op);
- /* journal_start/stop does not do its own locking while updating
- * the handle/transaction information. Hence we create our own
- * critical section to protect these calls. -SHP
- */
- lock_kernel();
- handle = journal_start(EXT3_JOURNAL(inode), jblocks);
- unlock_kernel();
- return handle;
-}
-
-static void presto_e3_trans_commit(struct presto_file_set *fset, void *handle)
-{
- if ( presto_no_journal(fset) || !handle)
- return;
-
- /* See comments before journal_start above. -SHP */
- lock_kernel();
- journal_stop(handle);
- unlock_kernel();
-}
-
-static void presto_e3_journal_file_data(struct inode *inode)
-{
-#ifdef EXT3_JOURNAL_DATA_FL
- EXT3_I(inode)->i_flags |= EXT3_JOURNAL_DATA_FL;
-#else
-#warning You must have a facility to enable journaled writes for recovery!
-#endif
-}
-
-/* The logic here is a slightly modified version of ext3/inode.c:block_to_path
- */
-static int presto_e3_has_all_data(struct inode *inode)
-{
- int ptrs = EXT3_ADDR_PER_BLOCK(inode->i_sb);
- int ptrs_bits = EXT3_ADDR_PER_BLOCK_BITS(inode->i_sb);
- const long direct_blocks = EXT3_NDIR_BLOCKS,
- indirect_blocks = ptrs,
- double_blocks = (1 << (ptrs_bits * 2));
- long block = (inode->i_size + inode->i_sb->s_blocksize - 1) >>
- inode->i_sb->s_blocksize_bits;
-
- ENTRY;
-
- if (inode->i_size == 0) {
- EXIT;
- return 1;
- }
-
- if (block < direct_blocks) {
- /* No indirect blocks, no problem. */
- } else if (block < indirect_blocks + direct_blocks) {
- block++;
- } else if (block < double_blocks + indirect_blocks + direct_blocks) {
- block += 2;
- } else if (((block - double_blocks - indirect_blocks - direct_blocks)
- >> (ptrs_bits * 2)) < ptrs) {
- block += 3;
- }
-
- block *= (inode->i_sb->s_blocksize / 512);
-
- CDEBUG(D_CACHE, "Need %ld blocks, have %ld.\n", block, inode->i_blocks);
-
- if (block > inode->i_blocks) {
- EXIT;
- return 0;
- }
-
- EXIT;
- return 1;
-}
-
-struct journal_ops presto_ext3_journal_ops = {
- .tr_all_data = presto_e3_has_all_data,
- .tr_avail = presto_e3_freespace,
- .tr_start = presto_e3_trans_start,
- .tr_commit = presto_e3_trans_commit,
- .tr_journal_data = presto_e3_journal_file_data,
- .tr_ilookup = presto_iget_ilookup
-};
-
-#endif /* CONFIG_EXT3_FS */
+++ /dev/null
-/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
- * vim:expandtab:shiftwidth=8:tabstop=8:
- *
- * Copyright (C) 1998 Peter J. Braam <braam@clusterfs.com>
- * Copyright (C) 2000 Red Hat, Inc.
- * Copyright (C) 2000 Los Alamos National Laboratory
- * Copyright (C) 2000 TurboLinux, Inc.
- * Copyright (C) 2001 Mountain View Data, Inc.
- *
- * This file is part of InterMezzo, http://www.inter-mezzo.org.
- *
- * InterMezzo is free software; you can redistribute it and/or
- * modify it under the terms of version 2 of the GNU General Public
- * License as published by the Free Software Foundation.
- *
- * InterMezzo is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with InterMezzo; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- */
-
-#include <linux/types.h>
-#include <linux/param.h>
-#include <linux/kernel.h>
-#include <linux/sched.h>
-#include <linux/fs.h>
-#include <linux/slab.h>
-#include <linux/vmalloc.h>
-#include <linux/stat.h>
-#include <linux/errno.h>
-#include <asm/segment.h>
-#include <asm/uaccess.h>
-#include <linux/string.h>
-#ifdef CONFIG_OBDFS_FS
-#include /usr/src/obd/include/linux/obdfs.h
-#endif
-
-#include "intermezzo_fs.h"
-#include "intermezzo_psdev.h"
-
-#ifdef CONFIG_OBDFS_FS
-
-
-static unsigned long presto_obdfs_freespace(struct presto_file_set *fset,
- struct super_block *sb)
-{
- return 0x0fffff;
-}
-
-/* start the filesystem journal operations */
-static void *presto_obdfs_trans_start(struct presto_file_set *fset,
- struct inode *inode,
- int op)
-{
-
- return (void *) 1;
-}
-
-#if 0
- int jblocks;
- int trunc_blks, one_path_blks, extra_path_blks,
- extra_name_blks, lml_blks;
- __u32 avail_kmlblocks;
-
- if ( presto_no_journal(fset) ||
- strcmp(fset->fset_cache->cache_type, "ext3"))
- {
- CDEBUG(D_JOURNAL, "got cache_type \"%s\"\n",
- fset->fset_cache->cache_type);
- return NULL;
- }
-
- avail_kmlblocks = inode->i_sb->u.ext3_sb.s_es->s_free_blocks_count;
-
- if ( avail_kmlblocks < 3 ) {
- return ERR_PTR(-ENOSPC);
- }
-
- if ( (op != PRESTO_OP_UNLINK && op != PRESTO_OP_RMDIR)
- && avail_kmlblocks < 6 ) {
- return ERR_PTR(-ENOSPC);
- }
-
- /* Need journal space for:
- at least three writes to KML (two one block writes, one a path)
- possibly a second name (unlink, rmdir)
- possibly a second path (symlink, rename)
- a one block write to the last rcvd file
- */
-
- trunc_blks = EXT3_DATA_TRANS_BLOCKS + 1;
- one_path_blks = 4*EXT3_DATA_TRANS_BLOCKS + MAX_PATH_BLOCKS(inode) + 3;
- lml_blks = 4*EXT3_DATA_TRANS_BLOCKS + MAX_PATH_BLOCKS(inode) + 2;
- extra_path_blks = EXT3_DATA_TRANS_BLOCKS + MAX_PATH_BLOCKS(inode);
- extra_name_blks = EXT3_DATA_TRANS_BLOCKS + MAX_NAME_BLOCKS(inode);
-
- /* additional blocks appear for "two pathname" operations
- and operations involving the LML records
- */
- switch (op) {
- case PRESTO_OP_TRUNC:
- jblocks = one_path_blks + extra_name_blks + trunc_blks
- + EXT3_DELETE_TRANS_BLOCKS;
- break;
- case PRESTO_OP_RELEASE:
- /*
- jblocks = one_path_blks + lml_blks + 2*trunc_blks;
- */
- jblocks = one_path_blks;
- break;
- case PRESTO_OP_SETATTR:
- jblocks = one_path_blks + trunc_blks + 1 ;
- break;
- case PRESTO_OP_CREATE:
- jblocks = one_path_blks + trunc_blks
- + EXT3_DATA_TRANS_BLOCKS + 3;
- break;
- case PRESTO_OP_LINK:
- jblocks = one_path_blks + trunc_blks
- + EXT3_DATA_TRANS_BLOCKS;
- break;
- case PRESTO_OP_UNLINK:
- jblocks = one_path_blks + extra_name_blks + trunc_blks
- + EXT3_DELETE_TRANS_BLOCKS;
- break;
- case PRESTO_OP_SYMLINK:
- jblocks = one_path_blks + extra_path_blks + trunc_blks
- + EXT3_DATA_TRANS_BLOCKS + 5;
- break;
- case PRESTO_OP_MKDIR:
- jblocks = one_path_blks + trunc_blks
- + EXT3_DATA_TRANS_BLOCKS + 4;
- break;
- case PRESTO_OP_RMDIR:
- jblocks = one_path_blks + extra_name_blks + trunc_blks
- + EXT3_DELETE_TRANS_BLOCKS;
- break;
- case PRESTO_OP_MKNOD:
- jblocks = one_path_blks + trunc_blks +
- EXT3_DATA_TRANS_BLOCKS + 3;
- break;
- case PRESTO_OP_RENAME:
- jblocks = one_path_blks + extra_path_blks + trunc_blks +
- 2 * EXT3_DATA_TRANS_BLOCKS + 2;
- break;
- case PRESTO_OP_WRITE:
- jblocks = one_path_blks;
- /* add this when we can wrap our transaction with
- that of ext3_file_write (ordered writes)
- + EXT3_DATA_TRANS_BLOCKS;
- */
- break;
- default:
- CDEBUG(D_JOURNAL, "invalid operation %d for journal\n", op);
- return NULL;
- }
-
- CDEBUG(D_JOURNAL, "creating journal handle (%d blocks)\n", jblocks);
- return journal_start(EXT3_JOURNAL(inode), jblocks);
-}
-#endif
-
-void presto_obdfs_trans_commit(struct presto_file_set *fset, void *handle)
-{
-#if 0
- if ( presto_no_journal(fset) || !handle)
- return;
-
- journal_stop(handle);
-#endif
-}
-
-void presto_obdfs_journal_file_data(struct inode *inode)
-{
-#ifdef EXT3_JOURNAL_DATA_FL
- inode->u.ext3_i.i_flags |= EXT3_JOURNAL_DATA_FL;
-#else
-#warning You must have a facility to enable journaled writes for recovery!
-#endif
-}
-
-struct journal_ops presto_obdfs_journal_ops = {
- .tr_avail = presto_obdfs_freespace,
- .tr_start = presto_obdfs_trans_start,
- .tr_commit = presto_obdfs_trans_commit,
- .tr_journal_data = presto_obdfs_journal_file_data
-};
-
-#endif
+++ /dev/null
-/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
- * vim:expandtab:shiftwidth=8:tabstop=8:
- *
- * Copyright (C) 1998 Peter J. Braam <braam@clusterfs.com>
- * Copyright (C) 2000 Red Hat, Inc.
- * Copyright (C) 2000 Los Alamos National Laboratory
- * Copyright (C) 2000 TurboLinux, Inc.
- * Copyright (C) 2001 Mountain View Data, Inc.
- *
- * This file is part of InterMezzo, http://www.inter-mezzo.org.
- *
- * InterMezzo is free software; you can redistribute it and/or
- * modify it under the terms of version 2 of the GNU General Public
- * License as published by the Free Software Foundation.
- *
- * InterMezzo is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with InterMezzo; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- */
-
-#include <linux/types.h>
-#include <linux/param.h>
-#include <linux/sched.h>
-#include <linux/fs.h>
-#include <linux/slab.h>
-#include <linux/vmalloc.h>
-#include <linux/stat.h>
-#include <linux/errno.h>
-#include <asm/segment.h>
-#include <asm/uaccess.h>
-#include <linux/string.h>
-#if 0
-#if defined(CONFIG_REISERFS_FS) || defined(CONFIG_REISERFS_FS_MODULE)
-#include <linux/reiserfs_fs.h>
-#include <linux/reiserfs_fs_sb.h>
-#include <linux/reiserfs_fs_i.h>
-#endif
-
-#include "intermezzo_fs.h"
-#include "intermezzo_psdev.h"
-
-#if defined(CONFIG_REISERFS_FS) || defined(CONFIG_REISERFS_FS_MODULE)
-
-
-static loff_t presto_reiserfs_freespace(struct presto_cache *cache,
- struct super_block *sb)
-{
- struct reiserfs_super_block * rs = SB_DISK_SUPER_BLOCK (sb);
- loff_t avail;
-
- avail = le32_to_cpu(rs->s_free_blocks) *
- le16_to_cpu(rs->s_blocksize);
- return avail;
-}
-
-/* start the filesystem journal operations */
-static void *presto_reiserfs_trans_start(struct presto_file_set *fset,
- struct inode *inode,
- int op)
-{
- int jblocks;
- __u32 avail_kmlblocks;
- struct reiserfs_transaction_handle *th ;
-
- PRESTO_ALLOC(th, sizeof(*th));
- if (!th) {
- CERROR("presto: No memory for trans handle\n");
- return NULL;
- }
-
- avail_kmlblocks = presto_reiserfs_freespace(fset->fset_cache,
- inode->i_sb);
- if ( presto_no_journal(fset) ||
- strcmp(fset->fset_cache->cache_type, "reiserfs"))
- {
- CDEBUG(D_JOURNAL, "got cache_type \"%s\"\n",
- fset->fset_cache->cache_type);
- return NULL;
- }
-
- if ( avail_kmlblocks < 3 ) {
- return ERR_PTR(-ENOSPC);
- }
-
- if ( (op != PRESTO_OP_UNLINK && op != PRESTO_OP_RMDIR)
- && avail_kmlblocks < 6 ) {
- return ERR_PTR(-ENOSPC);
- }
-
- jblocks = 3 + JOURNAL_PER_BALANCE_CNT * 4;
- CDEBUG(D_JOURNAL, "creating journal handle (%d blocks)\n", jblocks);
-
- lock_kernel();
- journal_begin(th, inode->i_sb, jblocks);
- unlock_kernel();
- return th;
-}
-
-static void presto_reiserfs_trans_commit(struct presto_file_set *fset,
- void *handle)
-{
- int jblocks;
- jblocks = 3 + JOURNAL_PER_BALANCE_CNT * 4;
-
- lock_kernel();
- journal_end(handle, fset->fset_cache->cache_sb, jblocks);
- unlock_kernel();
- PRESTO_FREE(handle, sizeof(struct reiserfs_transaction_handle));
-}
-
-static void presto_reiserfs_journal_file_data(struct inode *inode)
-{
-#ifdef EXT3_JOURNAL_DATA_FL
- inode->u.ext3_i.i_flags |= EXT3_JOURNAL_DATA_FL;
-#else
-#warning You must have a facility to enable journaled writes for recovery!
-#endif
-}
-
-static int presto_reiserfs_has_all_data(struct inode *inode)
-{
- BUG();
- return 0;
-}
-
-struct journal_ops presto_reiserfs_journal_ops = {
- .tr_all_data = presto_reiserfs_has_all_data,
- .tr_avail = presto_reiserfs_freespace,
- .tr_start = presto_reiserfs_trans_start,
- .tr_commit = presto_reiserfs_trans_commit,
- .tr_journal_data = presto_reiserfs_journal_file_data
-};
-
-#endif
-#endif
+++ /dev/null
-/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
- * vim:expandtab:shiftwidth=8:tabstop=8:
- *
- * Copyright (C) 1998 Peter J. Braam <braam@clusterfs.com>
- * Copyright (C) 2000 Red Hat, Inc.
- * Copyright (C) 2000 Los Alamos National Laboratory
- * Copyright (C) 2000 TurboLinux, Inc.
- * Copyright (C) 2001 Mountain View Data, Inc.
- * Copyright (C) 2001 Tacit Networks, Inc. <phil@off.net>
- *
- * This file is part of InterMezzo, http://www.inter-mezzo.org.
- *
- * InterMezzo is free software; you can redistribute it and/or
- * modify it under the terms of version 2 of the GNU General Public
- * License as published by the Free Software Foundation.
- *
- * InterMezzo is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with InterMezzo; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- */
-
-#include <linux/types.h>
-#include <linux/param.h>
-#include <linux/kernel.h>
-#include <linux/sched.h>
-#include <linux/fs.h>
-#include <linux/slab.h>
-#include <linux/vmalloc.h>
-#include <linux/stat.h>
-#include <linux/errno.h>
-#include <asm/segment.h>
-#include <asm/uaccess.h>
-#include <linux/string.h>
-#if defined(CONFIG_TMPFS)
-#include <linux/jbd.h>
-#if defined(CONFIG_EXT3)
-#include <linux/ext3_fs.h>
-#include <linux/ext3_jbd.h>
-#endif
-#endif
-
-#include "intermezzo_fs.h"
-#include "intermezzo_psdev.h"
-
-#if defined(CONFIG_TMPFS)
-
-/* space requirements:
- presto_do_truncate:
- used to truncate the KML forward to next fset->chunksize boundary
- - zero partial block
- - update inode
- presto_write_record:
- write header (< one block)
- write one path (< MAX_PATHLEN)
- possibly write another path (< MAX_PATHLEN)
- write suffix (< one block)
- presto_update_last_rcvd
- write one block
-*/
-
-static loff_t presto_tmpfs_freespace(struct presto_cache *cache,
- struct super_block *sb)
-{
- return (1<<30);
-}
-
-/* start the filesystem journal operations */
-static void *presto_tmpfs_trans_start(struct presto_file_set *fset,
- struct inode *inode,
- int op)
-{
- return (void *)1;
-}
-
-static void presto_tmpfs_trans_commit(struct presto_file_set *fset, void *handle)
-{
- return;
-}
-
-static void presto_tmpfs_journal_file_data(struct inode *inode)
-{
- return;
-}
-
-/* The logic here is a slightly modified version of ext3/inode.c:block_to_path
- */
-static int presto_tmpfs_has_all_data(struct inode *inode)
-{
- return 0;
-}
-
-struct journal_ops presto_tmpfs_journal_ops = {
- .tr_all_data = presto_tmpfs_has_all_data,
- .tr_avail = presto_tmpfs_freespace,
- .tr_start = presto_tmpfs_trans_start,
- .tr_commit = presto_tmpfs_trans_commit,
- .tr_journal_data = presto_tmpfs_journal_file_data,
- .tr_ilookup = presto_tmpfs_ilookup,
- .tr_add_ilookup = presto_add_ilookup_dentry
-};
-
-#endif /* CONFIG_EXT3_FS */
+++ /dev/null
-/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
- * vim:expandtab:shiftwidth=8:tabstop=8:
- *
- * Copyright (C) 1998 Peter J. Braam <braam@clusterfs.com>
- *
- * This file is part of InterMezzo, http://www.inter-mezzo.org.
- *
- * InterMezzo is free software; you can redistribute it and/or
- * modify it under the terms of version 2 of the GNU General Public
- * License as published by the Free Software Foundation.
- *
- * InterMezzo is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with InterMezzo; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- */
-
-#include <linux/types.h>
-#include <linux/kernel.h>
-#include <linux/sched.h>
-#include <linux/fs.h>
-#include <linux/slab.h>
-#include <linux/vmalloc.h>
-#include <linux/stat.h>
-#include <linux/errno.h>
-#include <asm/segment.h>
-#include <asm/uaccess.h>
-#include <linux/string.h>
-#if 0
-/* XFS Support not there yet */
-#ifdef CONFIG_FS_XFS
-#include <linux/xfs_fs.h>
-#endif
-#include "intermezzo_fs.h"
-#include "intermezzo_psdev.h"
-#include "intermezzo_journal.h"
-
-#if 0
-
-/* XFS has journalling, but these functions do nothing yet... */
-
-static unsigned long presto_xfs_freespace(struct presto_file_set *fset,
- struct super_block *sb)
-{
-
-#if 0
- vfs_t *vfsp = LINVFS_GET_VFS(sb);
- struct statvfs_t stat;
- bhv_desc_t *bdp;
- unsigned long avail;
- int rc;
-
- VFS_STATVFS(vfsp, &stat, NULL, rc);
- avail = statp.f_bfree;
-
- return sbp->sb_fdblocks;
-#endif
- return 0x0fffffff;
-}
-
-
-/* start the filesystem journal operations */
-static void *
-presto_xfs_trans_start(struct presto_file_set *fset,
- struct inode *inode, int op)
-{
- int xfs_op;
- /* do a free blocks check as in journal_ext3? does anything protect
- * the space in that case or can it disappear out from under us
- * anyway? */
-
-/* copied from xfs_trans.h, skipping header maze for now */
-#define XFS_TRANS_SETATTR_NOT_SIZE 1
-#define XFS_TRANS_SETATTR_SIZE 2
-#define XFS_TRANS_INACTIVE 3
-#define XFS_TRANS_CREATE 4
-#define XFS_TRANS_CREATE_TRUNC 5
-#define XFS_TRANS_TRUNCATE_FILE 6
-#define XFS_TRANS_REMOVE 7
-#define XFS_TRANS_LINK 8
-#define XFS_TRANS_RENAME 9
-#define XFS_TRANS_MKDIR 10
-#define XFS_TRANS_RMDIR 11
-#define XFS_TRANS_SYMLINK 12
-
- /* map the op onto the values for XFS so it can do reservation. if
- * we don't have enough info to differentiate between e.g. setattr
- * with or without size, what do we do? will it adjust? */
- switch (op) {
- case PRESTO_OP_SETATTR:
- /* or XFS_TRANS_SETATTR_NOT_SIZE? */
- xfs_op = XFS_TRANS_SETATTR_SIZE;
- break;
- case PRESTO_OP_CREATE:
- /* or CREATE_TRUNC? */
- xfs_op = XFS_TRANS_CREATE;
- break;
- case PRESTO_OP_LINK:
- xfs_op = XFS_TRANS_LINK;
- break;
- case PRESTO_OP_UNLINK:
- xfs_op = XFS_TRANS_REMOVE;
- break;
- case PRESTO_OP_SYMLINK:
- xfs_op = XFS_TRANS_SYMLINK;
- break;
- case PRESTO_OP_MKDIR:
- xfs_op = XFS_TRANS_MKDIR;
- break;
- case PRESTO_OP_RMDIR:
- xfs_op = XFS_TRANS_RMDIR;
- break;
- case PRESTO_OP_MKNOD:
- /* XXX can't find an analog for mknod? */
- xfs_op = XFS_TRANS_CREATE;
- break;
- case PRESTO_OP_RENAME:
- xfs_op = XFS_TRANS_RENAME;
- break;
- default:
- CDEBUG(D_JOURNAL, "invalid operation %d for journal\n", op);
- return NULL;
- }
-
- return xfs_trans_start(inode, xfs_op);
-}
-
-static void presto_xfs_trans_commit(struct presto_file_set *fset, void *handle)
-{
- /* assert (handle == current->j_handle) */
- xfs_trans_stop(handle);
-}
-
-static void presto_xfs_journal_file_data(struct inode *inode)
-{
- return;
-}
-
-static int presto_xfs_has_all_data(struct inode *inode)
-{
- BUG();
- return 0;
-}
-
-struct journal_ops presto_xfs_journal_ops = {
- .tr_all_data = presto_xfs_has_all_data,
- .tr_avail = presto_xfs_freespace,
- .tr_start = presto_xfs_trans_start,
- .tr_commit = presto_xfs_trans_commit,
- .tr_journal_data = presto_xfs_journal_file_data
-};
-
-#endif
-
-
-#endif /* CONFIG_XFS_FS */
-
+++ /dev/null
-#include <linux/errno.h>
-#include <linux/slab.h>
-#include <linux/vmalloc.h>
-#include <linux/module.h>
-#include <asm/uaccess.h>
-
-#include "intermezzo_fs.h"
-#include "intermezzo_upcall.h"
-#include "intermezzo_psdev.h"
-#include "intermezzo_kml.h"
-
-static struct presto_file_set * kml_getfset (char *path)
-{
- return presto_path2fileset(path);
-}
-
-/* Send the KML buffer and related volume info into kernel */
-int begin_kml_reint (struct file *file, unsigned long arg)
-{
- struct {
- char *volname;
- int namelen;
- char *recbuf;
- int reclen; /* int newpos; */
- } input;
- struct kml_fsdata *kml_fsdata = NULL;
- struct presto_file_set *fset = NULL;
- char *path;
- int error;
-
- ENTRY;
- /* allocate buffer & copy it to kernel space */
- if (copy_from_user(&input, (char *)arg, sizeof(input))) {
- EXIT;
- return -EFAULT;
- }
-
- if (input.reclen > kml_fsdata->kml_maxsize)
- return -ENOMEM; /* we'll find solution to this in the future */
-
- PRESTO_ALLOC(path, char *, input.namelen + 1);
- if ( !path ) {
- EXIT;
- return -ENOMEM;
- }
- if (copy_from_user(path, input.volname, input.namelen)) {
- PRESTO_FREE(path, input.namelen + 1);
- EXIT;
- return -EFAULT;
- }
- path[input.namelen] = '\0';
- fset = kml_getfset (path);
- PRESTO_FREE(path, input.namelen + 1);
-
- kml_fsdata = FSET_GET_KMLDATA(fset);
- /* read the buf from user memory here */
- if (copy_from_user(kml_fsdata->kml_buf, input.recbuf, input.reclen)) {
- EXIT;
- return -EFAULT;
- }
- kml_fsdata->kml_len = input.reclen;
-
- decode_kmlrec (&kml_fsdata->kml_reint_cache,
- kml_fsdata->kml_buf, kml_fsdata->kml_len);
-
- kml_fsdata->kml_reint_current = kml_fsdata->kml_reint_cache.next;
- kml_fsdata->kml_reintpos = 0;
- kml_fsdata->kml_count = 0;
- return 0;
-}
-
-/* DO_KML_REINT */
-int do_kml_reint (struct file *file, unsigned long arg)
-{
- struct {
- char *volname;
- int namelen;
- char *path;
- int pathlen;
- int recno;
- int offset;
- int len;
- int generation;
- __u64 ino;
- } input;
- int error;
- char *path;
- struct kml_rec *close_rec;
- struct kml_fsdata *kml_fsdata;
- struct presto_file_set *fset;
-
- ENTRY;
- if (copy_from_user(&input, (char *)arg, sizeof(input))) {
- EXIT;
- return -EFAULT;
- }
- PRESTO_ALLOC(path, char *, input.namelen + 1);
- if ( !path ) {
- EXIT;
- return -ENOMEM;
- }
- if (copy_from_user(path, input.volname, input.namelen)) {
- PRESTO_FREE(path, input.namelen + 1);
- EXIT;
- return -EFAULT;
- }
- path[input.namelen] = '\0';
- fset = kml_getfset (path);
- PRESTO_FREE(path, input.namelen + 1);
-
- kml_fsdata = FSET_GET_KMLDATA(fset);
-
- error = kml_reintbuf(kml_fsdata,
- fset->fset_mtpt->d_name.name,
- &close_rec);
-
- if (error == KML_CLOSE_BACKFETCH && close_rec != NULL) {
- struct kml_close *close = &close_rec->rec_kml.close;
- input.ino = close->ino;
- input.generation = close->generation;
- if (strlen (close->path) + 1 < input.pathlen) {
- strcpy (input.path, close->path);
- input.pathlen = strlen (close->path) + 1;
- input.recno = close_rec->rec_tail.recno;
- input.offset = close_rec->rec_kml_offset;
- input.len = close_rec->rec_size;
- input.generation = close->generation;
- input.ino = close->ino;
- }
- else {
- CDEBUG(D_KML, "KML_DO_REINT::no space to save:%d < %d",
- strlen (close->path) + 1, input.pathlen);
- error = -ENOMEM;
- }
- if (copy_to_user((char *)arg, &input, sizeof (input)))
- return -EFAULT;
- }
- return error;
-}
-
-/* END_KML_REINT */
-int end_kml_reint (struct file *file, unsigned long arg)
-{
- /* Free KML buffer and related volume info */
- struct {
- char *volname;
- int namelen;
-#if 0
- int count;
- int newpos;
-#endif
- } input;
- struct presto_file_set *fset = NULL;
- struct kml_fsdata *kml_fsdata = NULL;
- int error;
- char *path;
-
- ENTRY;
- if (copy_from_user(&input, (char *)arg, sizeof(input))) {
- EXIT;
- return -EFAULT;
- }
-
- PRESTO_ALLOC(path, char *, input.namelen + 1);
- if ( !path ) {
- EXIT;
- return -ENOMEM;
- }
- if (copy_from_user(path, input.volname, input.namelen)) {
- if ( error ) {
- PRESTO_FREE(path, input.namelen + 1);
- EXIT;
- return -EFAULT;
- }
- path[input.namelen] = '\0';
- fset = kml_getfset (path);
- PRESTO_FREE(path, input.namelen + 1);
-
- kml_fsdata = FSET_GET_KMLDATA(fset);
- delete_kmlrec (&kml_fsdata->kml_reint_cache);
-
- /* kml reint support */
- kml_fsdata->kml_reint_current = NULL;
- kml_fsdata->kml_len = 0;
- kml_fsdata->kml_reintpos = 0;
- kml_fsdata->kml_count = 0;
-#if 0
- input.newpos = kml_upc->newpos;
- input.count = kml_upc->count;
- if (copy_to_user((char *)arg, &input, sizeof (input)))
- return -EFAULT;
-#endif
- return error;
-}
+++ /dev/null
-/*
- * KML Decoding
- *
- * Copryright (C) 1996 Arthur Ma <arthur.ma@mountainviewdata.com>
- *
- * Copyright (C) 2001 Mountainview Data, Inc.
- */
-#include <linux/module.h>
-#include <linux/errno.h>
-#include <linux/kernel.h>
-#include <linux/major.h>
-#include <linux/slab.h>
-#include <linux/vmalloc.h>
-#include <linux/mm.h>
-#include "intermezzo_fs.h"
-#include "intermezzo_kml.h"
-
-static int size_round (int val);
-static int unpack_create (struct kml_create *rec, char *buf,
- int pos, int *rec_offs);
-static int unpack_open (struct kml_open *rec, char *buf,
- int pos, int *rec_offs);
-static int unpack_symlink (struct kml_symlink *rec, char *buf,
- int pos, int *rec_offs);
-static int unpack_mknod (struct kml_mknod *rec, char *buf,
- int pos, int *rec_offs);
-static int unpack_link (struct kml_link *rec, char *buf,
- int pos, int *rec_offs);
-static int unpack_rename (struct kml_rename *rec, char *buf,
- int pos, int *rec_offs);
-static int unpack_unlink (struct kml_unlink *rec, char *buf,
- int pos, int *rec_offs);
-static int unpack_rmdir (struct kml_rmdir *rec, char *buf,
- int pos, int *rec_offs);
-static int unpack_setattr (struct kml_setattr *rec, char *buf,
- int pos, int *rec_offs);
-static int unpack_close (struct kml_close *rec, char *buf,
- int pos, int *rec_offs);
-static int unpack_mkdir (struct kml_mkdir *rec, char *buf,
- int pos, int *rec_offs);
-
-#if 0
-static int unpack_endmark (struct kml_endmark *rec, char *buf,
- int pos, int *rec_offs);
-static void print_kml_endmark (struct kml_endmark *rec);
-#endif
-
-static int kml_unpack (char *kml_buf, int rec_size, int kml_offset,
- struct kml_rec **newrec);
-static char *kml_version (struct presto_version *ver);
-static void print_kml_prefix (struct big_journal_prefix *head);
-static void print_kml_create (struct kml_create *rec);
-static void print_kml_mkdir (struct kml_mkdir *rec);
-static void print_kml_unlink (struct kml_unlink *rec);
-static void print_kml_rmdir (struct kml_rmdir *rec);
-static void print_kml_close (struct kml_close *rec);
-static void print_kml_symlink (struct kml_symlink *rec);
-static void print_kml_rename (struct kml_rename *rec);
-static void print_kml_setattr (struct kml_setattr *rec);
-static void print_kml_link (struct kml_link *rec);
-static void print_kml_mknod (struct kml_mknod *rec);
-static void print_kml_open (struct kml_open *rec);
-static void print_kml_suffix (struct journal_suffix *tail);
-static char *readrec (char *recbuf, int reclen, int pos, int *size);
-
-#define KML_PREFIX_WORDS 8
-static int kml_unpack (char *kml_buf, int rec_size, int kml_offset,
- struct kml_rec **newrec)
-{
- struct kml_rec *rec;
- char *p;
- int pos, rec_offs;
- int error;
-
- ENTRY;
- if (rec_size < sizeof (struct journal_prefix) +
- sizeof (struct journal_suffix))
- return -EBADF;
-
- PRESTO_ALLOC(rec, struct kml_rec *, sizeof (struct kml_rec));
- if (rec == NULL) {
- EXIT;
- return -ENOMEM;
- }
- rec->rec_kml_offset = kml_offset;
- rec->rec_size = rec_size;
- p = kml_buf;
- p = dlogit (&rec->rec_head, p, KML_PREFIX_WORDS * sizeof (int));
- p = dlogit (&rec->rec_head.groups, p,
- sizeof (int) * rec->rec_head.ngroups);
-
- pos = sizeof (struct journal_prefix) +
- sizeof (int) * rec->rec_head.ngroups;
- switch (rec->rec_head.opcode)
- {
- case KML_CREATE:
- error = unpack_create (&rec->rec_kml.create,
- kml_buf, pos, &rec_offs);
- break;
- case KML_MKDIR:
- error = unpack_mkdir (&rec->rec_kml.mkdir,
- kml_buf, pos, &rec_offs);
- break;
- case KML_UNLINK:
- error = unpack_unlink (&rec->rec_kml.unlink,
- kml_buf, pos, &rec_offs);
- break;
- case KML_RMDIR:
- error = unpack_rmdir (&rec->rec_kml.rmdir,
- kml_buf, pos, &rec_offs);
- break;
- case KML_CLOSE:
- error = unpack_close (&rec->rec_kml.close,
- kml_buf, pos, &rec_offs);
- break;
- case KML_SYMLINK:
- error = unpack_symlink (&rec->rec_kml.symlink,
- kml_buf, pos, &rec_offs);
- break;
- case KML_RENAME:
- error = unpack_rename (&rec->rec_kml.rename,
- kml_buf, pos, &rec_offs);
- break;
- case KML_SETATTR:
- error = unpack_setattr (&rec->rec_kml.setattr,
- kml_buf, pos, &rec_offs);
- break;
- case KML_LINK:
- error = unpack_link (&rec->rec_kml.link,
- kml_buf, pos, &rec_offs);
- break;
- case KML_OPEN:
- error = unpack_open (&rec->rec_kml.open,
- kml_buf, pos, &rec_offs);
- break;
- case KML_MKNOD:
- error = unpack_mknod (&rec->rec_kml.mknod,
- kml_buf, pos, &rec_offs);
- break;
-#if 0
- case KML_ENDMARK:
- error = unpack_endmark (&rec->rec_kml.endmark,
- kml_buf, pos, &rec_offs);
- break;
-#endif
- default:
- CDEBUG (D_KML, "wrong opcode::%u\n",
- rec->rec_head.opcode);
- EXIT;
- return -EINVAL;
- }
- if (error) {
- PRESTO_FREE (rec, sizeof (struct kml_rec));
- return -EINVAL;
- }
- p = kml_buf + rec_offs;
- p = dlogit (&rec->rec_tail, p, sizeof (struct journal_suffix));
- memset (&rec->kml_optimize, 0, sizeof (struct kml_optimize));
- *newrec = rec;
- EXIT;
- return 0;
-}
-
-static int size_round (int val)
-{
- return (val + 3) & (~0x3);
-}
-
-static int unpack_create (struct kml_create *rec, char *buf,
- int pos, int *rec_offs)
-{
- char *p, *q;
- int unpack_size = 88;
- int pathlen;
-
- ENTRY;
- p = buf + pos;
- p = dlogit (&rec->old_parentv, p, sizeof (struct presto_version));
- p = dlogit (&rec->new_parentv, p, sizeof (struct presto_version));
- p = dlogit (&rec->new_objectv, p, sizeof (struct presto_version));
- p = dlogit (&rec->mode, p, sizeof (int));
- p = dlogit (&rec->uid, p, sizeof (int));
- p = dlogit (&rec->gid, p, sizeof (int));
- p = dlogit (&pathlen, p, sizeof (int));
-
- PRESTO_ALLOC(q, char *, pathlen + 1);
- if (q == NULL) {
- EXIT;
- return -ENOMEM;
- }
-
- memcpy (q, p, pathlen);
- q[pathlen] = '\0';
- rec->path = q;
-
- *rec_offs = pos + unpack_size + size_round(pathlen);
- EXIT;
- return 0;
-}
-
-static int unpack_open (struct kml_open *rec, char *buf,
- int pos, int *rec_offs)
-{
- *rec_offs = pos;
- return 0;
-}
-
-static int unpack_symlink (struct kml_symlink *rec, char *buf,
- int pos, int *rec_offs)
-{
- char *p, *q;
- int unpack_size = 88;
- int pathlen, targetlen;
-
- ENTRY;
- p = buf + pos;
- p = dlogit (&rec->old_parentv, p, sizeof (struct presto_version));
- p = dlogit (&rec->new_parentv, p, sizeof (struct presto_version));
- p = dlogit (&rec->new_objectv, p, sizeof (struct presto_version));
- p = dlogit (&rec->uid, p, sizeof (int));
- p = dlogit (&rec->gid, p, sizeof (int));
- p = dlogit (&pathlen, p, sizeof (int));
- p = dlogit (&targetlen, p, sizeof (int));
-
- PRESTO_ALLOC(q, char *, pathlen + 1);
- if (q == NULL) {
- EXIT;
- return -ENOMEM;
- }
-
- memcpy (q, p, pathlen);
- q[pathlen] = '\0';
- rec->sourcepath = q;
-
- PRESTO_ALLOC(q, char *, targetlen + 1);
- if (q == NULL) {
- PRESTO_FREE (rec->sourcepath, pathlen + 1);
- EXIT;
- return -ENOMEM;
- }
-
- memcpy (q, p, targetlen);
- q[targetlen] = '\0';
- rec->targetpath = q;
-
- *rec_offs = pos + unpack_size + size_round(pathlen) +
- size_round(targetlen);
- EXIT;
- return 0;
-}
-
-static int unpack_mknod (struct kml_mknod *rec, char *buf,
- int pos, int *rec_offs)
-{
- char *p, *q;
- int unpack_size = 96;
- int pathlen;
-
- ENTRY;
- p = buf + pos;
- p = dlogit (&rec->old_parentv, p, sizeof (struct presto_version));
- p = dlogit (&rec->new_parentv, p, sizeof (struct presto_version));
- p = dlogit (&rec->new_objectv, p, sizeof (struct presto_version));
- p = dlogit (&rec->mode, p, sizeof (int));
- p = dlogit (&rec->uid, p, sizeof (int));
- p = dlogit (&rec->gid, p, sizeof (int));
- p = dlogit (&rec->major, p, sizeof (int));
- p = dlogit (&rec->minor, p, sizeof (int));
- p = dlogit (&pathlen, p, sizeof (int));
-
- PRESTO_ALLOC(q, char *, pathlen + 1);
- if (q == NULL) {
- EXIT;
- return -ENOMEM;
- }
-
- memcpy (q, p, pathlen);
- q[pathlen] = '\0';
- rec->path = q;
-
- *rec_offs = pos + unpack_size + size_round(pathlen);
- EXIT;
- return 0;
-}
-
-static int unpack_link (struct kml_link *rec, char *buf,
- int pos, int *rec_offs)
-{
- char *p, *q;
- int unpack_size = 80;
- int pathlen, targetlen;
-
- ENTRY;
- p = buf + pos;
- p = dlogit (&rec->old_parentv, p, sizeof (struct presto_version));
- p = dlogit (&rec->new_parentv, p, sizeof (struct presto_version));
- p = dlogit (&rec->new_objectv, p, sizeof (struct presto_version));
- p = dlogit (&pathlen, p, sizeof (int));
- p = dlogit (&targetlen, p, sizeof (int));
-
- PRESTO_ALLOC(q, char *, pathlen + 1);
- if (q == NULL) {
- EXIT;
- return -ENOMEM;
- }
-
- memcpy (q, p, pathlen);
- q[pathlen] = '\0';
- rec->sourcepath = q;
- p += size_round (pathlen);
-
- PRESTO_ALLOC(q, char *, targetlen + 1);
- if (q == NULL) {
- PRESTO_FREE (rec->sourcepath, pathlen + 1);
- EXIT;
- return -ENOMEM;
- }
- memcpy (q, p, targetlen);
- q[targetlen] = '\0';
- rec->targetpath = q;
-
- *rec_offs = pos + unpack_size + size_round(pathlen) +
- size_round(targetlen);
- EXIT;
- return 0;
-}
-
-static int unpack_rename (struct kml_rename *rec, char *buf,
- int pos, int *rec_offs)
-{
- char *p, *q;
- int unpack_size = 104;
- int pathlen, targetlen;
-
- ENTRY;
- p = buf + pos;
- p = dlogit (&rec->old_objectv, p, sizeof (struct presto_version));
- p = dlogit (&rec->new_objectv, p, sizeof (struct presto_version));
- p = dlogit (&rec->new_tgtv, p, sizeof (struct presto_version));
- p = dlogit (&rec->old_tgtv, p, sizeof (struct presto_version));
- p = dlogit (&pathlen, p, sizeof (int));
- p = dlogit (&targetlen, p, sizeof (int));
-
- PRESTO_ALLOC(q, char *, pathlen + 1);
- if (q == NULL) {
- EXIT;
- return -ENOMEM;
- }
-
- memcpy (q, p, pathlen);
- q[pathlen] = '\0';
- rec->sourcepath = q;
- p += size_round (pathlen);
-
- PRESTO_ALLOC(q, char *, targetlen + 1);
- if (q == NULL) {
- PRESTO_FREE (rec->sourcepath, pathlen + 1);
- EXIT;
- return -ENOMEM;
- }
-
- memcpy (q, p, targetlen);
- q[targetlen] = '\0';
- rec->targetpath = q;
-
- *rec_offs = pos + unpack_size + size_round(pathlen) +
- size_round(targetlen);
- EXIT;
- return 0;
-}
-
-static int unpack_unlink (struct kml_unlink *rec, char *buf,
- int pos, int *rec_offs)
-{
- char *p, *q;
- int unpack_size = 80;
- int pathlen, targetlen;
-
- ENTRY;
- p = buf + pos;
- p = dlogit (&rec->old_parentv, p, sizeof (struct presto_version));
- p = dlogit (&rec->new_parentv, p, sizeof (struct presto_version));
- p = dlogit (&rec->old_tgtv, p, sizeof (struct presto_version));
- p = dlogit (&pathlen, p, sizeof (int));
- p = dlogit (&targetlen, p, sizeof (int));
-
- PRESTO_ALLOC(q, char *, pathlen + 1);
- if (q == NULL) {
- EXIT;
- return -ENOMEM;
- }
-
- memcpy (q, p, pathlen);
- q[pathlen] = '\0';
- rec->path = q;
- p += size_round (pathlen);
-
- PRESTO_ALLOC(q, char *, targetlen + 1);
- if (q == NULL) {
- PRESTO_FREE (rec->path, pathlen + 1);
- EXIT;
- return -ENOMEM;
- }
-
- memcpy (q, p, targetlen);
- q[targetlen] = '\0';
- rec->name = q;
-
- /* fix the presto_journal_unlink problem */
- *rec_offs = pos + unpack_size + size_round(pathlen) +
- size_round(targetlen);
- EXIT;
- return 0;
-}
-
-static int unpack_rmdir (struct kml_rmdir *rec, char *buf,
- int pos, int *rec_offs)
-{
- char *p, *q;
- int unpack_size = 80;
- int pathlen, targetlen;
-
- ENTRY;
- p = buf + pos;
- p = dlogit (&rec->old_parentv, p, sizeof (struct presto_version));
- p = dlogit (&rec->new_parentv, p, sizeof (struct presto_version));
- p = dlogit (&rec->old_tgtv, p, sizeof (struct presto_version));
- p = dlogit (&pathlen, p, sizeof (int));
- p = dlogit (&targetlen, p, sizeof (int));
-
- PRESTO_ALLOC(q, char *, pathlen + 1);
- if (q == NULL) {
- EXIT;
- return -ENOMEM;
- }
-
- memcpy (q, p, pathlen);
- q[pathlen] = '\0';
- rec->path = q;
- p += size_round (pathlen);
-
- PRESTO_ALLOC(q, char *, targetlen + 1);
- if (q == NULL) {
- PRESTO_FREE (rec->path, pathlen + 1);
- EXIT;
- return -ENOMEM;
- }
- memcpy (q, p, targetlen);
- q[targetlen] = '\0';
- rec->name = q;
-
- *rec_offs = pos + unpack_size + size_round(pathlen) +
- size_round(targetlen);
- EXIT;
- return 0;
-}
-
-static int unpack_setattr (struct kml_setattr *rec, char *buf,
- int pos, int *rec_offs)
-{
- char *p, *q;
- int unpack_size = 72;
- struct kml_attr {
- __u64 size, mtime, ctime;
- } objattr;
- int valid, mode, uid, gid, flags;
- int pathlen;
-
- ENTRY;
- p = buf + pos;
- p = dlogit (&rec->old_objectv, p, sizeof (struct presto_version));
- p = dlogit (&valid, p, sizeof (int));
- p = dlogit (&mode, p, sizeof (int));
- p = dlogit (&uid, p, sizeof (int));
- p = dlogit (&gid, p, sizeof (int));
- p = dlogit (&objattr, p, sizeof (struct kml_attr));
- p = dlogit (&flags, p, sizeof (int));
- p = dlogit (&pathlen, p, sizeof (int));
-
- rec->iattr.ia_valid = valid;
- rec->iattr.ia_mode = mode;
- rec->iattr.ia_uid = uid;
- rec->iattr.ia_gid = gid;
- rec->iattr.ia_size = objattr.size;
- rec->iattr.ia_mtime = objattr.mtime;
- rec->iattr.ia_ctime = objattr.ctime;
- rec->iattr.ia_atime = 0;
- rec->iattr.ia_attr_flags = flags;
-
- PRESTO_ALLOC(q, char *, pathlen + 1);
- if (q == NULL) {
- EXIT;
- return -ENOMEM;
- }
- memcpy (q, p, pathlen);
- q[pathlen] = '\0';
- rec->path = q;
- p += pathlen;
-
- *rec_offs = pos + unpack_size + size_round(pathlen);
- EXIT;
- return 0;
-}
-
-static int unpack_close (struct kml_close *rec, char *buf,
- int pos, int *rec_offs)
-{
- char *p, *q;
- int unpack_size = 52;
- int pathlen;
-
- ENTRY;
- p = buf + pos;
- p = dlogit (&rec->open_mode, p, sizeof (int));
- p = dlogit (&rec->open_uid, p, sizeof (int));
- p = dlogit (&rec->open_gid, p, sizeof (int));
- p = dlogit (&rec->new_objectv, p, sizeof (struct presto_version));
- p = dlogit (&rec->ino, p, sizeof (__u64));
- p = dlogit (&rec->generation, p, sizeof (int));
- p = dlogit (&pathlen, p, sizeof (int));
-
- PRESTO_ALLOC(q, char *, pathlen + 1);
- if (q == NULL) {
- EXIT;
- return -ENOMEM;
- }
-
- memcpy (q, p, pathlen);
- q[pathlen] = '\0';
- rec->path = q;
- p += pathlen;
-
- *rec_offs = pos + unpack_size + size_round(pathlen);
- EXIT;
- return 0;
-}
-
-static int unpack_mkdir (struct kml_mkdir *rec, char *buf,
- int pos, int *rec_offs)
-{
- char *p, *q;
- int unpack_size = 88;
- int pathlen;
-
- ENTRY;
- p = buf + pos;
- p = dlogit (&rec->old_parentv, p, sizeof (struct presto_version));
- p = dlogit (&rec->new_parentv, p, sizeof (struct presto_version));
- p = dlogit (&rec->new_objectv, p, sizeof (struct presto_version));
- p = dlogit (&rec->mode, p, sizeof (int));
- p = dlogit (&rec->uid, p, sizeof (int));
- p = dlogit (&rec->gid, p, sizeof (int));
- p = dlogit (&pathlen, p, sizeof (int));
-
- PRESTO_ALLOC(q, char *, pathlen + 1);
- if (q == NULL) {
- EXIT;
- return -ENOMEM;
- }
-
- memcpy (q, p, pathlen);
- q[pathlen] = '\0';
- rec->path = q;
- p += pathlen;
-
- *rec_offs = pos + unpack_size + size_round(pathlen);
- EXIT;
- return 0;
-}
-
-#if 0
-static int unpack_endmark (struct kml_endmark *rec, char *buf,
- int pos, int *rec_offs)
-{
- char *p;
- p = buf + pos;
- p = dlogit (&rec->total, p, sizeof (int));
-
- PRESTO_ALLOC (rec->kop, struct kml_kop_node *,
- sizeof (struct kml_kop_node) * rec->total);
- if (rec->kop == NULL) {
- EXIT;
- return -ENOMEM;
- }
-
- p = dlogit (rec->kop, p, sizeof (struct kml_kop_node) * rec->total);
-
- *rec_offs = pos + sizeof (int) + sizeof (struct kml_kop_node) * rec->total;
- return 0;
-}
-#endif
-
-static char *kml_version (struct presto_version *ver)
-{
- static char buf[256];
- sprintf (buf, "mt::%lld, ct::%lld, size::%lld",
- ver->pv_mtime, ver->pv_ctime, ver->pv_size);
- return buf;
-}
-
-static void print_kml_prefix (struct big_journal_prefix *head)
-{
- int i;
-
- CDEBUG (D_KML, " === KML PREFIX\n");
- CDEBUG (D_KML, " len = %u\n", head->len);
- CDEBUG (D_KML, " version = %u\n", head->version);
- CDEBUG (D_KML, " pid = %u\n", head->pid);
- CDEBUG (D_KML, " uid = %u\n", head->uid);
- CDEBUG (D_KML, " fsuid = %u\n", head->fsuid);
- CDEBUG (D_KML, " fsgid = %u\n", head->fsgid);
- CDEBUG (D_KML, " opcode = %u\n", head->opcode);
- CDEBUG (D_KML, " ngroup = %u", head->ngroups);
- for (i = 0; i < head->ngroups; i++)
- CDEBUG (D_KML, "%u ", head->groups[i]);
- CDEBUG (D_KML, "\n");
-}
-
-static void print_kml_create (struct kml_create *rec)
-{
- CDEBUG (D_KML, " === CREATE\n");
- CDEBUG (D_KML, " path::%s\n", rec->path);
- CDEBUG (D_KML, " new_objv::%s\n", kml_version (&rec->new_objectv));
- CDEBUG (D_KML, " old_parv::%s\n", kml_version (&rec->old_parentv));
- CDEBUG (D_KML, " new_parv::%s\n", kml_version (&rec->new_parentv));
- CDEBUG (D_KML, " mode::%o\n", rec->mode);
- CDEBUG (D_KML, " uid::%d\n", rec->uid);
- CDEBUG (D_KML, " gid::%d\n", rec->gid);
-}
-
-static void print_kml_mkdir (struct kml_mkdir *rec)
-{
- CDEBUG (D_KML, " === MKDIR\n");
- CDEBUG (D_KML, " path::%s\n", rec->path);
- CDEBUG (D_KML, " new_objv::%s\n", kml_version (&rec->new_objectv));
- CDEBUG (D_KML, " old_parv::%s\n", kml_version (&rec->old_parentv));
- CDEBUG (D_KML, " new_parv::%s\n", kml_version (&rec->new_parentv));
- CDEBUG (D_KML, " mode::%o\n", rec->mode);
- CDEBUG (D_KML, " uid::%d\n", rec->uid);
- CDEBUG (D_KML, " gid::%d\n", rec->gid);
-}
-
-static void print_kml_unlink (struct kml_unlink *rec)
-{
- CDEBUG (D_KML, " === UNLINK\n");
- CDEBUG (D_KML, " path::%s/%s\n", rec->path, rec->name);
- CDEBUG (D_KML, " old_tgtv::%s\n", kml_version (&rec->old_tgtv));
- CDEBUG (D_KML, " old_parv::%s\n", kml_version (&rec->old_parentv));
- CDEBUG (D_KML, " new_parv::%s\n", kml_version (&rec->new_parentv));
-}
-
-static void print_kml_rmdir (struct kml_rmdir *rec)
-{
- CDEBUG (D_KML, " === RMDIR\n");
- CDEBUG (D_KML, " path::%s/%s\n", rec->path, rec->name);
- CDEBUG (D_KML, " old_tgtv::%s\n", kml_version (&rec->old_tgtv));
- CDEBUG (D_KML, " old_parv::%s\n", kml_version (&rec->old_parentv));
- CDEBUG (D_KML, " new_parv::%s\n", kml_version (&rec->new_parentv));
-}
-
-static void print_kml_close (struct kml_close *rec)
-{
- CDEBUG (D_KML, " === CLOSE\n");
- CDEBUG (D_KML, " mode::%o\n", rec->open_mode);
- CDEBUG (D_KML, " uid::%d\n", rec->open_uid);
- CDEBUG (D_KML, " gid::%d\n", rec->open_gid);
- CDEBUG (D_KML, " path::%s\n", rec->path);
- CDEBUG (D_KML, " new_objv::%s\n", kml_version (&rec->new_objectv));
- CDEBUG (D_KML, " ino::%lld\n", rec->ino);
- CDEBUG (D_KML, " gen::%u\n", rec->generation);
-}
-
-static void print_kml_symlink (struct kml_symlink *rec)
-{
- CDEBUG (D_KML, " === SYMLINK\n");
- CDEBUG (D_KML, " s-path::%s\n", rec->sourcepath);
- CDEBUG (D_KML, " t-path::%s\n", rec->targetpath);
- CDEBUG (D_KML, " old_parv::%s\n", kml_version (&rec->old_parentv));
- CDEBUG (D_KML, " new_parv::%s\n", kml_version (&rec->new_parentv));
- CDEBUG (D_KML, " new_objv::%s\n", kml_version (&rec->new_objectv));
- CDEBUG (D_KML, " uid::%d\n", rec->uid);
- CDEBUG (D_KML, " gid::%d\n", rec->gid);
-}
-
-static void print_kml_rename (struct kml_rename *rec)
-{
- CDEBUG (D_KML, " === RENAME\n");
- CDEBUG (D_KML, " s-path::%s\n", rec->sourcepath);
- CDEBUG (D_KML, " t-path::%s\n", rec->targetpath);
- CDEBUG (D_KML, " old_tgtv::%s\n", kml_version (&rec->old_tgtv));
- CDEBUG (D_KML, " new_tgtv::%s\n", kml_version (&rec->new_tgtv));
- CDEBUG (D_KML, " new_objv::%s\n", kml_version (&rec->new_objectv));
- CDEBUG (D_KML, " old_objv::%s\n", kml_version (&rec->old_objectv));
-}
-
-static void print_kml_setattr (struct kml_setattr *rec)
-{
- CDEBUG (D_KML, " === SETATTR\n");
- CDEBUG (D_KML, " path::%s\n", rec->path);
- CDEBUG (D_KML, " old_objv::%s\n", kml_version (&rec->old_objectv));
- CDEBUG (D_KML, " valid::0x%x\n", rec->iattr.ia_valid);
- CDEBUG (D_KML, " mode::%o\n", rec->iattr.ia_mode);
- CDEBUG (D_KML, " uid::%d\n", rec->iattr.ia_uid);
- CDEBUG (D_KML, " gid::%d\n", rec->iattr.ia_gid);
- CDEBUG (D_KML, " size::%u\n", (u32) rec->iattr.ia_size);
- CDEBUG (D_KML, " mtime::%u\n", (u32) rec->iattr.ia_mtime);
- CDEBUG (D_KML, " ctime::%u\n", (u32) rec->iattr.ia_ctime);
- CDEBUG (D_KML, " flags::%u\n", (u32) rec->iattr.ia_attr_flags);
-}
-
-static void print_kml_link (struct kml_link *rec)
-{
- CDEBUG (D_KML, " === LINK\n");
- CDEBUG (D_KML, " path::%s ==> %s\n", rec->sourcepath, rec->targetpath);
- CDEBUG (D_KML, " old_parv::%s\n", kml_version (&rec->old_parentv));
- CDEBUG (D_KML, " new_obj::%s\n", kml_version (&rec->new_objectv));
- CDEBUG (D_KML, " new_parv::%s\n", kml_version (&rec->new_parentv));
-}
-
-static void print_kml_mknod (struct kml_mknod *rec)
-{
- CDEBUG (D_KML, " === MKNOD\n");
- CDEBUG (D_KML, " path::%s\n", rec->path);
- CDEBUG (D_KML, " new_obj::%s\n", kml_version (&rec->new_objectv));
- CDEBUG (D_KML, " old_parv::%s\n", kml_version (&rec->old_parentv));
- CDEBUG (D_KML, " new_parv::%s\n", kml_version (&rec->new_parentv));
- CDEBUG (D_KML, " mode::%o\n", rec->mode);
- CDEBUG (D_KML, " uid::%d\n", rec->uid);
- CDEBUG (D_KML, " gid::%d\n", rec->gid);
- CDEBUG (D_KML, " major::%d\n", rec->major);
- CDEBUG (D_KML, " minor::%d\n", rec->minor);
-}
-
-static void print_kml_open (struct kml_open *rec)
-{
- CDEBUG (D_KML, " === OPEN\n");
-}
-
-#if 0
-static void print_kml_endmark (struct kml_endmark *rec)
-{
- int i;
- CDEBUG (D_KML, " === ENDMARK\n");
- CDEBUG (D_KML, " total::%u\n", rec->total);
- for (i = 0; i < rec->total; i++)
- {
- CDEBUG (D_KML, " recno=%ld::flag=%ld,op=%ld, i_ino=%ld, \
- i_nlink=%ld\n", (long) rec->kop[i].kml_recno,
- (long) rec->kop[i].kml_flag, (long) rec->kop[i].kml_op,
- (long) rec->kop[i].i_ino, (long) rec->kop[i].i_nlink);
- }
-}
-#endif
-
-static void print_kml_optimize (struct kml_optimize *rec)
-{
- CDEBUG (D_KML, " === OPTIMIZE\n");
- if (rec->kml_flag == KML_REC_DELETE)
- CDEBUG (D_KML, " kml_flag::deleted\n");
- else
- CDEBUG (D_KML, " kml_flag::exist\n");
- CDEBUG (D_KML, " kml_op::%u\n", rec->kml_op);
- CDEBUG (D_KML, " i_nlink::%d\n", rec->i_nlink);
- CDEBUG (D_KML, " i_ino::%u\n", rec->i_ino);
-}
-
-static void print_kml_suffix (struct journal_suffix *tail)
-{
- CDEBUG (D_KML, " === KML SUFFIX\n");
- CDEBUG (D_KML, " prevrec::%ld\n", tail->prevrec);
- CDEBUG (D_KML, " recno::%ld\n", (long) tail->recno);
- CDEBUG (D_KML, " time::%d\n", tail->time);
- CDEBUG (D_KML, " len::%d\n", tail->len);
-}
-
-void kml_printrec (struct kml_rec *rec, int kml_printop)
-{
- if (kml_printop & PRINT_KML_PREFIX)
- print_kml_prefix (&rec->rec_head);
- if (kml_printop & PRINT_KML_REC)
- {
- switch (rec->rec_head.opcode)
- {
- case KML_CREATE:
- print_kml_create (&rec->rec_kml.create);
- break;
- case KML_MKDIR:
- print_kml_mkdir (&rec->rec_kml.mkdir);
- break;
- case KML_UNLINK:
- print_kml_unlink (&rec->rec_kml.unlink);
- break;
- case KML_RMDIR:
- print_kml_rmdir (&rec->rec_kml.rmdir);
- break;
- case KML_CLOSE:
- print_kml_close (&rec->rec_kml.close);
- break;
- case KML_SYMLINK:
- print_kml_symlink (&rec->rec_kml.symlink);
- break;
- case KML_RENAME:
- print_kml_rename (&rec->rec_kml.rename);
- break;
- case KML_SETATTR:
- print_kml_setattr (&rec->rec_kml.setattr);
- break;
- case KML_LINK:
- print_kml_link (&rec->rec_kml.link);
- break;
- case KML_OPEN:
- print_kml_open (&rec->rec_kml.open);
- break;
- case KML_MKNOD:
- print_kml_mknod (&rec->rec_kml.mknod);
- break;
-#if 0
- case KML_ENDMARK:
- print_kml_endmark (&rec->rec_kml.endmark);
-#endif
- break;
- default:
- CDEBUG (D_KML, " === BAD RECORD, opcode=%u\n",
- rec->rec_head.opcode);
- break;
- }
- }
- if (kml_printop & PRINT_KML_SUFFIX)
- print_kml_suffix (&rec->rec_tail);
- if (kml_printop & PRINT_KML_OPTIMIZE)
- print_kml_optimize (&rec->kml_optimize);
-}
-
-void kml_freerec (struct kml_rec *rec)
-{
- char *sourcepath = NULL,
- *targetpath = NULL;
- switch (rec->rec_head.opcode)
- {
- case KML_CREATE:
- sourcepath = rec->rec_kml.create.path;
- break;
- case KML_MKDIR:
- sourcepath = rec->rec_kml.create.path;
- break;
- case KML_UNLINK:
- sourcepath = rec->rec_kml.unlink.path;
- targetpath = rec->rec_kml.unlink.name;
- break;
- case KML_RMDIR:
- sourcepath = rec->rec_kml.rmdir.path;
- targetpath = rec->rec_kml.rmdir.name;
- break;
- case KML_CLOSE:
- sourcepath = rec->rec_kml.close.path;
- break;
- case KML_SYMLINK:
- sourcepath = rec->rec_kml.symlink.sourcepath;
- targetpath = rec->rec_kml.symlink.targetpath;
- break;
- case KML_RENAME:
- sourcepath = rec->rec_kml.rename.sourcepath;
- targetpath = rec->rec_kml.rename.targetpath;
- break;
- case KML_SETATTR:
- sourcepath = rec->rec_kml.setattr.path;
- break;
- case KML_LINK:
- sourcepath = rec->rec_kml.link.sourcepath;
- targetpath = rec->rec_kml.link.targetpath;
- break;
- case KML_OPEN:
- break;
- case KML_MKNOD:
- sourcepath = rec->rec_kml.mknod.path;
- break;
-#if 0
- case KML_ENDMARK:
- PRESTO_FREE (rec->rec_kml.endmark.kop, sizeof (int) +
- sizeof (struct kml_kop_node) *
- rec->rec_kml.endmark.total);
-#endif
- break;
- default:
- break;
- }
- if (sourcepath != NULL)
- PRESTO_FREE (sourcepath, strlen (sourcepath) + 1);
- if (targetpath != NULL)
- PRESTO_FREE (targetpath, strlen (targetpath) + 1);
-}
-
-char *readrec (char *recbuf, int reclen, int pos, int *size)
-{
- char *p = recbuf + pos;
- *size = *((int *) p);
- if (*size > (reclen - pos))
- return NULL;
- return p;
-}
-
-int kml_decoderec (char *buf, int pos, int buflen, int *size,
- struct kml_rec **newrec)
-{
- char *tmp;
- int error;
- tmp = readrec (buf, buflen, pos, size);
- if (tmp == NULL)
- return -EBADF;
- error = kml_unpack (tmp, *size, pos, newrec);
- return error;
-}
-
-#if 0
-static void fill_kmlrec_optimize (struct list_head *head,
- struct kml_rec *optrec)
-{
- struct kml_rec *kmlrec;
- struct list_head *tmp;
- struct kml_endmark *km;
- struct kml_optimize *ko;
- int n;
-
- if (optrec->rec_kml.endmark.total == 0)
- return;
- n = optrec->rec_kml.endmark.total - 1;
- tmp = head->prev;
- km = &optrec->rec_kml.endmark;
- while ( n >= 0 && tmp != head )
- {
- kmlrec = list_entry(tmp, struct kml_rec,
- kml_optimize.kml_chains);
- tmp = tmp->prev;
- if (kmlrec->rec_tail.recno == km->kop[n].kml_recno)
- {
- ko = &kmlrec->kml_optimize;
- ko->kml_flag = km->kop[n].kml_flag;
- ko->kml_op = km->kop[n].kml_op;
- ko->i_nlink = km->kop[n].i_nlink;
- ko->i_ino = km->kop[n].i_ino;
- n --;
- }
- }
- if (n != -1)
- CDEBUG (D_KML, "Yeah!!!, KML optimize error, recno=%d, n=%d\n",
- optrec->rec_tail.recno, n);
-}
-#endif
-
-int decode_kmlrec (struct list_head *head, char *kml_buf, int buflen)
-{
- struct kml_rec *rec;
- int pos = 0, size;
- int err;
- while (pos < buflen) {
- err = kml_decoderec (kml_buf, pos, buflen, &size, &rec);
- if (err != 0)
- break;
-#if 0
- if (rec->rec_head.opcode == KML_ENDMARK) {
- fill_kmlrec_optimize (head, rec);
- mark_rec_deleted (rec);
- }
-#endif
- list_add_tail (&rec->kml_optimize.kml_chains, head);
- pos += size;
- }
- return err;
-}
-
-int delete_kmlrec (struct list_head *head)
-{
- struct kml_rec *rec;
- struct list_head *tmp;
-
- if (list_empty(head))
- return 0;
- tmp = head->next;
- while ( tmp != head ) {
- rec = list_entry(tmp, struct kml_rec,
- kml_optimize.kml_chains);
- tmp = tmp->next;
- kml_freerec (rec);
- }
- INIT_LIST_HEAD(head);
- return 0;
-}
-
-int print_allkmlrec (struct list_head *head, int printop)
-{
- struct kml_rec *rec;
- struct list_head *tmp;
-
- if (list_empty(head))
- return 0;
- tmp = head->next;
- while ( tmp != head ) {
- rec = list_entry(tmp, struct kml_rec,
- kml_optimize.kml_chains);
- tmp = tmp->next;
-#if 0
- if (printop & PRINT_KML_EXIST) {
- if (is_deleted_node (rec))
- continue;
- }
- else if (printop & PRINT_KML_DELETE) {
- if (! is_deleted_node (rec))
- continue;
- }
-#endif
- kml_printrec (rec, printop);
- }
- INIT_LIST_HEAD(head);
- return 0;
-}
-
+++ /dev/null
-/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
- * vim:expandtab:shiftwidth=8:tabstop=8:
- *
- * Copyright (C) 2001 Cluster File Systems, Inc. <braam@clusterfs.com>
- *
- * This file is part of InterMezzo, http://www.inter-mezzo.org.
- *
- * InterMezzo is free software; you can redistribute it and/or
- * modify it under the terms of version 2 of the GNU General Public
- * License as published by the Free Software Foundation.
- *
- * InterMezzo is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with InterMezzo; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- *
- * Reintegration of KML records
- *
- */
-
-#include <linux/module.h>
-#include <linux/errno.h>
-#include <linux/fs.h>
-#include <linux/kernel.h>
-#include <linux/major.h>
-#include <linux/slab.h>
-#include <linux/vmalloc.h>
-#include <linux/mm.h>
-#include <asm/uaccess.h>
-#include <asm/pgtable.h>
-#include <asm/mmu_context.h>
-
-#include "intermezzo_fs.h"
-#include "intermezzo_psdev.h"
-
-static void kmlreint_pre_secure(struct kml_rec *rec, struct file *dir,
- struct run_ctxt *saved)
-{
- struct run_ctxt ctxt;
- struct presto_dentry_data *dd = presto_d2d(dir->f_dentry);
- int i;
-
- ctxt.fsuid = rec->prefix.hdr->fsuid;
- ctxt.fsgid = rec->prefix.hdr->fsgid;
- ctxt.fs = KERNEL_DS;
- ctxt.pwd = dd->dd_fset->fset_dentry;
- ctxt.pwdmnt = dd->dd_fset->fset_mnt;
-
- ctxt.root = ctxt.pwd;
- ctxt.rootmnt = ctxt.pwdmnt;
- if (rec->prefix.hdr->ngroups > 0) {
- ctxt.group_info = groups_alloc(rec->prefix.hdr->ngroups);
- for (i = 0; i< ctxt.group_info->ngroups; i++)
- GROUP_AT(ctxt.group_info,i)= rec->prefix.groups[i];
- } else
- ctxt.group_info = groups_alloc(0);
-
- push_ctxt(saved, &ctxt);
-}
-
-
-/* Append two strings in a less-retarded fashion. */
-static char * path_join(char *p1, int p1len, char *p2, int p2len)
-{
- int size = p1len + p2len + 2; /* possibly one extra /, one NULL */
- char *path;
-
- path = kmalloc(size, GFP_KERNEL);
- if (path == NULL)
- return NULL;
-
- memcpy(path, p1, p1len);
- if (path[p1len - 1] != '/') {
- path[p1len] = '/';
- p1len++;
- }
- memcpy(path + p1len, p2, p2len);
- path[p1len + p2len] = '\0';
-
- return path;
-}
-
-static inline int kml_recno_equal(struct kml_rec *rec,
- struct presto_file_set *fset)
-{
- return (rec->suffix->recno == fset->fset_lento_recno + 1);
-}
-
-static inline int version_equal(struct presto_version *a, struct inode *inode)
-{
- if (a == NULL)
- return 1;
-
- if (inode == NULL) {
- CERROR("InterMezzo: NULL inode in version_equal()\n");
- return 0;
- }
-
- if (inode->i_mtime.tv_sec == a->pv_mtime_sec &&
- inode->i_mtime.tv_nsec == a->pv_mtime_nsec &&
- (S_ISDIR(inode->i_mode) || inode->i_size == a->pv_size))
- return 1;
-
- return 0;
-}
-
-static int reint_close(struct kml_rec *rec, struct file *file,
- struct lento_vfs_context *given_info)
-{
- struct run_ctxt saved_ctxt;
- int error;
- struct presto_file_set *fset;
- struct lento_vfs_context info;
- ENTRY;
-
- memcpy(&info, given_info, sizeof(*given_info));
-
-
- CDEBUG (D_KML, "=====REINT_CLOSE::%s\n", rec->path);
-
- fset = presto_fset(file->f_dentry);
- if (fset->fset_flags & FSET_DATA_ON_DEMAND) {
- struct iattr iattr;
-
- iattr.ia_valid = ATTR_CTIME | ATTR_MTIME | ATTR_SIZE;
- iattr.ia_mtime.tv_sec = (time_t)rec->new_objectv->pv_mtime_sec;
- iattr.ia_mtime.tv_nsec = (time_t)rec->new_objectv->pv_mtime_nsec;
- iattr.ia_ctime.tv_sec = (time_t)rec->new_objectv->pv_ctime_sec;
- iattr.ia_ctime.tv_nsec = (time_t)rec->new_objectv->pv_ctime_nsec;
- iattr.ia_size = (time_t)rec->new_objectv->pv_size;
-
- /* no kml record, but update last rcvd */
- /* save fileid in dentry for later backfetch */
- info.flags |= LENTO_FL_EXPECT | LENTO_FL_SET_DDFILEID;
- info.remote_ino = rec->ino;
- info.remote_generation = rec->generation;
- info.flags &= ~LENTO_FL_KML;
- kmlreint_pre_secure(rec, file, &saved_ctxt);
- error = lento_setattr(rec->path, &iattr, &info);
- pop_ctxt(&saved_ctxt);
-
- presto_d2d(file->f_dentry)->dd_flags &= ~PRESTO_DATA;
- } else {
- int minor = presto_f2m(fset);
-
- info.updated_time.tv_sec = rec->new_objectv->pv_mtime_sec;
- info.updated_time.tv_nsec = rec->new_objectv->pv_mtime_nsec;
- memcpy(&info.remote_version, rec->old_objectv,
- sizeof(*rec->old_objectv));
- info.remote_ino = rec->ino;
- info.remote_generation = rec->generation;
- error = izo_upc_backfetch(minor, rec->path, fset->fset_name,
- &info);
- if (error) {
- CERROR("backfetch error %d\n", error);
- /* if file doesn't exist anymore, then ignore the CLOSE
- * and just update the last_rcvd.
- */
- if (error == ENOENT) {
- CDEBUG(D_KML, "manually updating remote offset uuid %s"
- "recno %d offset %Lu\n", info.uuid, info.recno,
- (unsigned long long) info.kml_offset);
- error = izo_rcvd_upd_remote(fset, info.uuid, info.recno, info.kml_offset);
- if(error)
- CERROR("izo_rcvd_upd_remote error %d\n", error);
-
- }
- }
-
- /* propagate error to avoid further reint */
- }
-
- EXIT;
- return error;
-}
-
-static int reint_create(struct kml_rec *rec, struct file *dir,
- struct lento_vfs_context *info)
-{
- struct run_ctxt saved_ctxt;
- int error; ENTRY;
-
- CDEBUG (D_KML, "=====REINT_CREATE::%s\n", rec->path);
- info->updated_time.tv_sec = rec->new_objectv->pv_ctime_sec;
- info->updated_time.tv_nsec = rec->new_objectv->pv_ctime_nsec;
- kmlreint_pre_secure(rec, dir, &saved_ctxt);
- error = lento_create(rec->path, rec->mode, info);
- pop_ctxt(&saved_ctxt);
-
- EXIT;
- return error;
-}
-
-static int reint_link(struct kml_rec *rec, struct file *dir,
- struct lento_vfs_context *info)
-{
- struct run_ctxt saved_ctxt;
- int error;
-
- ENTRY;
-
- CDEBUG (D_KML, "=====REINT_LINK::%s -> %s\n", rec->path, rec->target);
- info->updated_time.tv_sec = rec->new_objectv->pv_mtime_sec;
- info->updated_time.tv_nsec = rec->new_objectv->pv_mtime_nsec;
- kmlreint_pre_secure(rec, dir, &saved_ctxt);
- error = lento_link(rec->path, rec->target, info);
- pop_ctxt(&saved_ctxt);
-
- EXIT;
- return error;
-}
-
-static int reint_mkdir(struct kml_rec *rec, struct file *dir,
- struct lento_vfs_context *info)
-{
- struct run_ctxt saved_ctxt;
- int error;
-
- ENTRY;
-
- CDEBUG (D_KML, "=====REINT_MKDIR::%s\n", rec->path);
- info->updated_time.tv_sec = rec->new_objectv->pv_ctime_sec;
- info->updated_time.tv_nsec = rec->new_objectv->pv_ctime_nsec;
- kmlreint_pre_secure(rec, dir, &saved_ctxt);
- error = lento_mkdir(rec->path, rec->mode, info);
- pop_ctxt(&saved_ctxt);
-
- EXIT;
- return error;
-}
-
-static int reint_mknod(struct kml_rec *rec, struct file *dir,
- struct lento_vfs_context *info)
-{
- struct run_ctxt saved_ctxt;
- int error;
- dev_t dev;
-
- ENTRY;
-
- CDEBUG (D_KML, "=====REINT_MKNOD::%s\n", rec->path);
- info->updated_time.tv_sec = rec->new_objectv->pv_ctime_sec;
- info->updated_time.tv_nsec = rec->new_objectv->pv_ctime_nsec;
- kmlreint_pre_secure(rec, dir, &saved_ctxt);
-
- dev = rec->rdev ? old_decode_dev(rec->rdev) : MKDEV(rec->major, rec->minor);
-
- error = lento_mknod(rec->path, rec->mode, dev, info);
- pop_ctxt(&saved_ctxt);
-
- EXIT;
- return error;
-}
-
-
-static int reint_noop(struct kml_rec *rec, struct file *dir,
- struct lento_vfs_context *info)
-{
- return 0;
-}
-
-static int reint_rename(struct kml_rec *rec, struct file *dir,
- struct lento_vfs_context *info)
-{
- struct run_ctxt saved_ctxt;
- int error;
-
- ENTRY;
-
- CDEBUG (D_KML, "=====REINT_RENAME::%s -> %s\n", rec->path, rec->target);
- info->updated_time.tv_sec = rec->new_objectv->pv_mtime_sec;
- info->updated_time.tv_nsec = rec->new_objectv->pv_mtime_nsec;
- kmlreint_pre_secure(rec, dir, &saved_ctxt);
- error = lento_rename(rec->path, rec->target, info);
- pop_ctxt(&saved_ctxt);
-
- EXIT;
- return error;
-}
-
-static int reint_rmdir(struct kml_rec *rec, struct file *dir,
- struct lento_vfs_context *info)
-{
- struct run_ctxt saved_ctxt;
- int error;
- char *path;
-
- ENTRY;
-
- path = path_join(rec->path, rec->pathlen - 1, rec->target, rec->targetlen);
- if (path == NULL) {
- EXIT;
- return -ENOMEM;
- }
-
- CDEBUG (D_KML, "=====REINT_RMDIR::%s\n", path);
- info->updated_time.tv_sec = rec->new_parentv->pv_mtime_sec;
- info->updated_time.tv_nsec = rec->new_parentv->pv_mtime_nsec;
- kmlreint_pre_secure(rec, dir, &saved_ctxt);
- error = lento_rmdir(path, info);
- pop_ctxt(&saved_ctxt);
-
- kfree(path);
- EXIT;
- return error;
-}
-
-static int reint_setattr(struct kml_rec *rec, struct file *dir,
- struct lento_vfs_context *info)
-{
- struct run_ctxt saved_ctxt;
- struct iattr iattr;
- int error;
-
- ENTRY;
-
- iattr.ia_valid = rec->valid;
- iattr.ia_mode = (umode_t)rec->mode;
- iattr.ia_uid = (uid_t)rec->uid;
- iattr.ia_gid = (gid_t)rec->gid;
- iattr.ia_size = (off_t)rec->size;
- iattr.ia_ctime.tv_sec = rec->ctime_sec;
- iattr.ia_ctime.tv_nsec = rec->ctime_nsec;
- iattr.ia_mtime.tv_sec = rec->mtime_sec;
- iattr.ia_mtime.tv_nsec = rec->mtime_nsec;
- iattr.ia_atime = iattr.ia_mtime; /* We don't track atimes. */
- iattr.ia_attr_flags = rec->flags;
-
- CDEBUG (D_KML, "=====REINT_SETATTR::%s (%d)\n", rec->path, rec->valid);
- kmlreint_pre_secure(rec, dir, &saved_ctxt);
- error = lento_setattr(rec->path, &iattr, info);
- pop_ctxt(&saved_ctxt);
-
- EXIT;
- return error;
-}
-
-static int reint_symlink(struct kml_rec *rec, struct file *dir,
- struct lento_vfs_context *info)
-{
- struct run_ctxt saved_ctxt;
- int error;
-
- ENTRY;
-
- CDEBUG (D_KML, "=====REINT_SYMLINK::%s -> %s\n", rec->path, rec->target);
- info->updated_time.tv_sec = rec->new_objectv->pv_ctime_sec;
- info->updated_time.tv_nsec = rec->new_objectv->pv_ctime_nsec;
- kmlreint_pre_secure(rec, dir, &saved_ctxt);
- error = lento_symlink(rec->target, rec->path, info);
- pop_ctxt(&saved_ctxt);
-
- EXIT;
- return error;
-}
-
-static int reint_unlink(struct kml_rec *rec, struct file *dir,
- struct lento_vfs_context *info)
-{
- struct run_ctxt saved_ctxt;
- int error;
- char *path;
-
- ENTRY;
-
- path = path_join(rec->path, rec->pathlen - 1, rec->target, rec->targetlen);
- if (path == NULL) {
- EXIT;
- return -ENOMEM;
- }
-
- CDEBUG (D_KML, "=====REINT_UNLINK::%s\n", path);
- info->updated_time.tv_sec = rec->new_parentv->pv_mtime_sec;
- info->updated_time.tv_nsec = rec->new_parentv->pv_mtime_nsec;
- kmlreint_pre_secure(rec, dir, &saved_ctxt);
- error = lento_unlink(path, info);
- pop_ctxt(&saved_ctxt);
-
- kfree(path);
- EXIT;
- return error;
-}
-
-static int branch_reint_rename(struct presto_file_set *fset, struct kml_rec *rec,
- struct file *dir, struct lento_vfs_context *info,
- char * kml_data, __u64 kml_size)
-{
- int error;
-
- ENTRY;
-
- error = reint_rename(rec, dir, info);
- if (error == -ENOENT) {
- /* normal reint failed because path was not found */
- struct rec_info rec;
-
- CDEBUG(D_KML, "saving branch rename kml\n");
- rec.is_kml = 1;
- rec.size = kml_size;
- error = presto_log(fset, &rec, kml_data, kml_size,
- NULL, 0, NULL, 0, NULL, 0);
- if (error == 0)
- error = presto_write_last_rcvd(&rec, fset, info);
- }
-
- EXIT;
- return error;
-}
-
-int branch_reinter(struct presto_file_set *fset, struct kml_rec *rec,
- struct file *dir, struct lento_vfs_context *info,
- char * kml_data, __u64 kml_size)
-{
- int error = 0;
- int op = rec->prefix.hdr->opcode;
-
- if (op == KML_OPCODE_CLOSE) {
- /* regular close and backfetch */
- error = reint_close(rec, dir, info);
- } else if (op == KML_OPCODE_RENAME) {
- /* rename only if name already exists */
- error = branch_reint_rename(fset, rec, dir, info,
- kml_data, kml_size);
- } else {
- /* just rewrite kml into branch/kml and update last_rcvd */
- struct rec_info rec;
-
- CDEBUG(D_KML, "Saving branch kml\n");
- rec.is_kml = 1;
- rec.size = kml_size;
- error = presto_log(fset, &rec, kml_data, kml_size,
- NULL, 0, NULL, 0, NULL, 0);
- if (error == 0)
- error = presto_write_last_rcvd(&rec, fset, info);
- }
-
- return error;
-}
-
-typedef int (*reinter_t)(struct kml_rec *rec, struct file *basedir,
- struct lento_vfs_context *info);
-
-static reinter_t presto_reinters[KML_OPCODE_NUM] =
-{
- [KML_OPCODE_CLOSE] = reint_close,
- [KML_OPCODE_CREATE] = reint_create,
- [KML_OPCODE_LINK] = reint_link,
- [KML_OPCODE_MKDIR] = reint_mkdir,
- [KML_OPCODE_MKNOD] = reint_mknod,
- [KML_OPCODE_NOOP] = reint_noop,
- [KML_OPCODE_RENAME] = reint_rename,
- [KML_OPCODE_RMDIR] = reint_rmdir,
- [KML_OPCODE_SETATTR] = reint_setattr,
- [KML_OPCODE_SYMLINK] = reint_symlink,
- [KML_OPCODE_UNLINK] = reint_unlink,
-};
-
-static inline reinter_t get_reinter(int op)
-{
- if (op < 0 || op >= sizeof(presto_reinters) / sizeof(reinter_t))
- return NULL;
- else
- return presto_reinters[op];
-}
-
-int kml_reint_rec(struct file *dir, struct izo_ioctl_data *data)
-{
- char *ptr;
- char *end;
- struct kml_rec rec;
- int error = 0;
- struct lento_vfs_context info;
- struct presto_cache *cache;
- struct presto_file_set *fset;
- struct presto_dentry_data *dd = presto_d2d(dir->f_dentry);
- int op;
- reinter_t reinter;
-
- struct izo_rcvd_rec lr_rec;
- int off;
-
- ENTRY;
-
- error = presto_prep(dir->f_dentry, &cache, &fset);
- if ( error ) {
- CERROR("intermezzo: Reintegration on invalid file\n");
- return error;
- }
-
- if (!dd || !dd->dd_fset || dd->dd_fset->fset_dentry != dir->f_dentry) {
- CERROR("intermezzo: reintegration on non-fset root (ino %ld)\n",
- dir->f_dentry->d_inode->i_ino);
-
- return -EINVAL;
- }
-
- if (data->ioc_plen1 > 64 * 1024) {
- EXIT;
- return -ENOSPC;
- }
-
- ptr = fset->fset_reint_buf;
- end = ptr + data->ioc_plen1;
-
- if (copy_from_user(ptr, data->ioc_pbuf1, data->ioc_plen1)) {
- EXIT;
- error = -EFAULT;
- goto out;
- }
-
- error = kml_unpack(&rec, &ptr, end);
- if (error) {
- EXIT;
- error = -EFAULT;
- goto out;
- }
-
- off = izo_rcvd_get(&lr_rec, fset, data->ioc_uuid);
- if (off < 0) {
- CERROR("No last_rcvd record, setting to 0\n");
- memset(&lr_rec, 0, sizeof(lr_rec));
- }
-
- data->ioc_kmlsize = ptr - fset->fset_reint_buf;
-
- if (rec.suffix->recno != lr_rec.lr_remote_recno + 1) {
- CERROR("KML record number %Lu expected, not %d\n",
- (unsigned long long) (lr_rec.lr_remote_recno + 1),
- rec.suffix->recno);
-
-#if 0
- if (!version_check(&rec, dd->dd_fset, &info)) {
- /* FIXME: do an upcall to resolve conflicts */
- CERROR("intermezzo: would be a conflict!\n");
- error = -EINVAL;
- EXIT;
- goto out;
- }
-#endif
- }
-
- op = rec.prefix.hdr->opcode;
-
- reinter = get_reinter(op);
- if (!reinter) {
- CERROR("%s: Unrecognized KML opcode %d\n", __FUNCTION__, op);
- error = -EINVAL;
- EXIT;
- goto out;
- }
-
- info.kml_offset = data->ioc_offset + data->ioc_kmlsize;
- info.recno = rec.suffix->recno;
- info.flags = LENTO_FL_EXPECT;
- if (data->ioc_flags)
- info.flags |= LENTO_FL_KML;
-
- memcpy(info.uuid, data->ioc_uuid, sizeof(info.uuid));
-
- if (fset->fset_flags & FSET_IS_BRANCH && data->ioc_flags)
- error = branch_reinter(fset, &rec, dir, &info, fset->fset_reint_buf,
- data->ioc_kmlsize);
- else
- error = reinter(&rec, dir, &info);
- out:
- EXIT;
- return error;
-}
-
-int izo_get_fileid(struct file *dir, struct izo_ioctl_data *data)
-{
- char *buf = NULL;
- char *ptr;
- char *end;
- struct kml_rec rec;
- struct file *file;
- struct presto_cache *cache;
- struct presto_file_set *fset;
- struct presto_dentry_data *dd = presto_d2d(dir->f_dentry);
- struct run_ctxt saved_ctxt;
- int error;
-
- ENTRY;
-
- error = presto_prep(dir->f_dentry, &cache, &fset);
- if ( error ) {
- CERROR("intermezzo: Reintegration on invalid file\n");
- return error;
- }
-
- if (!dd || !dd->dd_fset || dd->dd_fset->fset_dentry != dir->f_dentry) {
- CERROR("intermezzo: reintegration on non-fset root (ino %ld)\n",
- dir->f_dentry->d_inode->i_ino);
-
- return -EINVAL;
- }
-
-
- PRESTO_ALLOC(buf, data->ioc_plen1);
- if (!buf) {
- EXIT;
- return -ENOMEM;
- }
- ptr = buf;
- end = buf + data->ioc_plen1;
-
- if (copy_from_user(buf, data->ioc_pbuf1, data->ioc_plen1)) {
- EXIT;
- PRESTO_FREE(buf, data->ioc_plen1);
- return -EFAULT;
- }
-
- error = kml_unpack(&rec, &ptr, end);
- if (error) {
- EXIT;
- PRESTO_FREE(buf, data->ioc_plen1);
- return -EFAULT;
- }
-
- kmlreint_pre_secure(&rec, dir, &saved_ctxt);
-
- file = filp_open(rec.path, O_RDONLY, 0);
- if (!file || IS_ERR(file)) {
- error = PTR_ERR(file);
- goto out;
- }
- data->ioc_ino = file->f_dentry->d_inode->i_ino;
- data->ioc_generation = file->f_dentry->d_inode->i_generation;
- filp_close(file, 0);
-
- CDEBUG(D_FILE, "%s ino %Lx, gen %Lx\n", rec.path,
- (unsigned long long) data->ioc_ino,
- (unsigned long long) data->ioc_generation);
-
- out:
- if (buf)
- PRESTO_FREE(buf, data->ioc_plen1);
- pop_ctxt(&saved_ctxt);
- EXIT;
- return error;
-}
-
-
+++ /dev/null
-#include <linux/errno.h>
-#include <linux/slab.h>
-#include <linux/vmalloc.h>
-#include <linux/module.h>
-#include <asm/uaccess.h>
-
-#include "intermezzo_fs.h"
-#include "intermezzo_upcall.h"
-#include "intermezzo_psdev.h"
-#include "intermezzo_kml.h"
-
-int kml_init (struct presto_file_set *fset)
-{
- struct kml_fsdata *data;
-
- ENTRY;
- PRESTO_ALLOC (data, struct kml_fsdata *, sizeof (struct kml_fsdata));
- if (data == NULL) {
- EXIT;
- return -ENOMEM;
- }
- INIT_LIST_HEAD (&data->kml_reint_cache);
- INIT_LIST_HEAD (&data->kml_kop_cache);
-
- PRESTO_ALLOC (data->kml_buf, char *, KML_REINT_MAXBUF);
- if (data->kml_buf == NULL) {
- PRESTO_FREE (data, sizeof (struct kml_fsdata));
- EXIT;
- return -ENOMEM;
- }
-
- data->kml_maxsize = KML_REINT_MAXBUF;
- data->kml_len = 0;
- data->kml_reintpos = 0;
- data->kml_count = 0;
- fset->fset_kmldata = data;
- EXIT;
- return 0;
-}
-
-int kml_cleanup (struct presto_file_set *fset)
-{
- struct kml_fsdata *data = fset->fset_kmldata;
-
- if (data == NULL)
- return 0;
-
- fset->fset_kmldata = NULL;
-#if 0
- kml_sop_cleanup (&data->kml_reint_cache);
- kml_kop_cleanup (&data->kml_kop_cache);
-#endif
- PRESTO_FREE (data->kml_buf, KML_REINT_MAXBUF);
- PRESTO_FREE (data, sizeof (struct kml_fsdata));
- return 0;
-}
-
-
+++ /dev/null
-/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
- * vim:expandtab:shiftwidth=8:tabstop=8:
- *
- * Copyright (C) 2001 Cluster File Systems, Inc. <braam@clusterfs.com>
- *
- * This file is part of InterMezzo, http://www.inter-mezzo.org.
- *
- * InterMezzo is free software; you can redistribute it and/or
- * modify it under the terms of version 2 of the GNU General Public
- * License as published by the Free Software Foundation.
- *
- * InterMezzo is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with InterMezzo; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- *
- * Unpacking of KML records
- *
- */
-
-#ifdef __KERNEL__
-# include <linux/module.h>
-# include <linux/errno.h>
-# include <linux/kernel.h>
-# include <linux/major.h>
-# include <linux/sched.h>
-# include <linux/lp.h>
-# include <linux/slab.h>
-# include <linux/ioport.h>
-# include <linux/fcntl.h>
-# include <linux/delay.h>
-# include <linux/skbuff.h>
-# include <linux/proc_fs.h>
-# include <linux/vmalloc.h>
-# include <linux/fs.h>
-# include <linux/poll.h>
-# include <linux/init.h>
-# include <linux/list.h>
-# include <linux/stat.h>
-# include <asm/io.h>
-# include <asm/segment.h>
-# include <asm/system.h>
-# include <asm/poll.h>
-# include <asm/uaccess.h>
-#else
-# include <time.h>
-# include <stdio.h>
-# include <string.h>
-# include <stdlib.h>
-# include <errno.h>
-# include <sys/stat.h>
-# include <glib.h>
-#endif
-
-#include "intermezzo_lib.h"
-#include "intermezzo_idl.h"
-#include "intermezzo_fs.h"
-
-int kml_unpack_version(struct presto_version **ver, char **buf, char *end)
-{
- char *ptr = *buf;
- struct presto_version *pv;
-
- UNLOGP(*ver, struct presto_version, ptr, end);
- pv = *ver;
- pv->pv_mtime_sec = NTOH__u32(pv->pv_mtime_sec);
- pv->pv_mtime_nsec = NTOH__u32(pv->pv_mtime_nsec);
- pv->pv_ctime_sec = NTOH__u32(pv->pv_ctime_sec);
- pv->pv_ctime_nsec = NTOH__u32(pv->pv_ctime_nsec);
- pv->pv_size = NTOH__u64(pv->pv_size);
-
- *buf = ptr;
-
- return 0;
-}
-
-
-static int kml_unpack_noop(struct kml_rec *rec, char **buf, char *end)
-{
- return 0;
-}
-
-
-static int kml_unpack_get_fileid(struct kml_rec *rec, char **buf, char *end)
-{
- char *ptr = *buf;
-
- LUNLOGV(rec->pathlen, __u32, ptr, end);
- UNLOGL(rec->path, char, rec->pathlen, ptr, end);
-
- *buf = ptr;
- return 0;
-}
-
-static int kml_unpack_create(struct kml_rec *rec, char **buf, char *end)
-{
- char *ptr = *buf;
-
- kml_unpack_version(&rec->old_parentv, &ptr, end);
- kml_unpack_version(&rec->new_parentv, &ptr, end);
- kml_unpack_version(&rec->new_objectv, &ptr, end);
- LUNLOGV(rec->mode, __u32, ptr, end);
- LUNLOGV(rec->uid, __u32, ptr, end);
- LUNLOGV(rec->gid, __u32, ptr, end);
- LUNLOGV(rec->pathlen, __u32, ptr, end);
- UNLOGL(rec->path, char, rec->pathlen, ptr, end);
-
- *buf = ptr;
-
- return 0;
-}
-
-
-static int kml_unpack_mkdir(struct kml_rec *rec, char **buf, char *end)
-{
- char *ptr = *buf;
-
- kml_unpack_version(&rec->old_parentv, &ptr, end);
- kml_unpack_version(&rec->new_parentv, &ptr, end);
- kml_unpack_version(&rec->new_objectv, &ptr, end);
- LUNLOGV(rec->mode, __u32, ptr, end);
- LUNLOGV(rec->uid, __u32, ptr, end);
- LUNLOGV(rec->gid, __u32, ptr, end);
- LUNLOGV(rec->pathlen, __u32, ptr, end);
- UNLOGL(rec->path, char, rec->pathlen, ptr, end);
-
- *buf = ptr;
-
- return 0;
-}
-
-
-static int kml_unpack_unlink(struct kml_rec *rec, char **buf, char *end)
-{
- char *ptr = *buf;
-
- kml_unpack_version(&rec->old_parentv, &ptr, end);
- kml_unpack_version(&rec->new_parentv, &ptr, end);
- kml_unpack_version(&rec->old_objectv, &ptr, end);
- LUNLOGV(rec->old_mode, __u32, ptr, end);
- LUNLOGV(rec->old_rdev, __u32, ptr, end);
- LUNLOGV(rec->old_uid, __u64, ptr, end);
- LUNLOGV(rec->old_gid, __u64, ptr, end);
- LUNLOGV(rec->pathlen, __u32, ptr, end);
- LUNLOGV(rec->targetlen, __u32, ptr, end);
- LUNLOGV(rec->old_targetlen, __u32, ptr, end);
- UNLOGL(rec->path, char, rec->pathlen, ptr, end);
- UNLOGL(rec->target, char, rec->targetlen, ptr, end);
- UNLOGL(rec->old_target, char, rec->old_targetlen, ptr, end);
-
- *buf = ptr;
-
- return 0;
-}
-
-
-static int kml_unpack_rmdir(struct kml_rec *rec, char **buf, char *end)
-{
- char *ptr = *buf;
-
- kml_unpack_version(&rec->old_parentv, &ptr, end);
- kml_unpack_version(&rec->new_parentv, &ptr, end);
- kml_unpack_version(&rec->old_objectv, &ptr, end);
- LUNLOGV(rec->old_mode, __u32, ptr, end);
- LUNLOGV(rec->old_rdev, __u32, ptr, end);
- LUNLOGV(rec->old_uid, __u64, ptr, end);
- LUNLOGV(rec->old_gid, __u64, ptr, end);
- LUNLOGV(rec->pathlen, __u32, ptr, end);
- LUNLOGV(rec->targetlen, __u32, ptr, end);
- UNLOGL(rec->path, char, rec->pathlen, ptr, end);
- UNLOGL(rec->target, char, rec->targetlen, ptr, end);
-
- *buf = ptr;
-
- return 0;
-}
-
-
-static int kml_unpack_close(struct kml_rec *rec, char **buf, char *end)
-{
- char *ptr = *buf;
-
- LUNLOGV(rec->mode, __u32, ptr, end); // used for open_mode
- LUNLOGV(rec->uid, __u32, ptr, end); // used for open_uid
- LUNLOGV(rec->gid, __u32, ptr, end); // used for open_gid
- kml_unpack_version(&rec->old_objectv, &ptr, end);
- kml_unpack_version(&rec->new_objectv, &ptr, end);
- LUNLOGV(rec->ino, __u64, ptr, end);
- LUNLOGV(rec->generation, __u32, ptr, end);
- LUNLOGV(rec->pathlen, __u32, ptr, end);
- UNLOGL(rec->path, char, rec->pathlen, ptr, end);
-
- *buf = ptr;
-
- return 0;
-}
-
-
-static int kml_unpack_symlink(struct kml_rec *rec, char **buf, char *end)
-{
- char *ptr = *buf;
-
- kml_unpack_version(&rec->old_parentv, &ptr, end);
- kml_unpack_version(&rec->new_parentv, &ptr, end);
- kml_unpack_version(&rec->new_objectv, &ptr, end);
- LUNLOGV(rec->uid, __u32, ptr, end);
- LUNLOGV(rec->gid, __u32, ptr, end);
- LUNLOGV(rec->pathlen, __u32, ptr, end);
- LUNLOGV(rec->targetlen, __u32, ptr, end);
- UNLOGL(rec->path, char, rec->pathlen, ptr, end);
- UNLOGL(rec->target, char, rec->targetlen, ptr, end);
-
- *buf = ptr;
-
- return 0;
-}
-
-
-static int kml_unpack_rename(struct kml_rec *rec, char **buf, char *end)
-{
- char *ptr = *buf;
-
- kml_unpack_version(&rec->old_objectv, &ptr, end);
- kml_unpack_version(&rec->new_objectv, &ptr, end);
- kml_unpack_version(&rec->old_parentv, &ptr, end);
- kml_unpack_version(&rec->new_parentv, &ptr, end);
- LUNLOGV(rec->pathlen, __u32, ptr, end);
- LUNLOGV(rec->targetlen, __u32, ptr, end);
- UNLOGL(rec->path, char, rec->pathlen, ptr, end);
- UNLOGL(rec->target, char, rec->targetlen, ptr, end);
-
- *buf = ptr;
-
- return 0;
-}
-
-
-static int kml_unpack_setattr(struct kml_rec *rec, char **buf, char *end)
-{
- char *ptr = *buf;
-
- kml_unpack_version(&rec->old_objectv, &ptr, end);
- LUNLOGV(rec->valid, __u32, ptr, end);
- LUNLOGV(rec->mode, __u32, ptr, end);
- LUNLOGV(rec->uid, __u32, ptr, end);
- LUNLOGV(rec->gid, __u32, ptr, end);
- LUNLOGV(rec->size, __u64, ptr, end);
- LUNLOGV(rec->mtime_sec, __u32, ptr, end);
- LUNLOGV(rec->mtime_nsec, __u32, ptr, end);
- LUNLOGV(rec->ctime_sec, __u32, ptr, end);
- LUNLOGV(rec->ctime_nsec, __u32, ptr, end);
- LUNLOGV(rec->flags, __u32, ptr, end);
- LUNLOGV(rec->old_mode, __u32, ptr, end);
- LUNLOGV(rec->old_rdev, __u32, ptr, end);
- LUNLOGV(rec->old_uid, __u64, ptr, end);
- LUNLOGV(rec->old_gid, __u64, ptr, end);
- LUNLOGV(rec->pathlen, __u32, ptr, end);
- UNLOGL(rec->path, char, rec->pathlen, ptr, end);
-
- *buf = ptr;
-
- return 0;
-}
-
-
-static int kml_unpack_link(struct kml_rec *rec, char **buf, char *end)
-{
- char *ptr = *buf;
-
- kml_unpack_version(&rec->old_parentv, &ptr, end);
- kml_unpack_version(&rec->new_parentv, &ptr, end);
- kml_unpack_version(&rec->new_objectv, &ptr, end);
- LUNLOGV(rec->pathlen, __u32, ptr, end);
- LUNLOGV(rec->targetlen, __u32, ptr, end);
- UNLOGL(rec->path, char, rec->pathlen, ptr, end);
- UNLOGL(rec->target, char, rec->targetlen, ptr, end);
-
- *buf = ptr;
-
- return 0;
-}
-
-static int kml_unpack_mknod(struct kml_rec *rec, char **buf, char *end)
-{
- char *ptr = *buf;
-
- kml_unpack_version(&rec->old_parentv, &ptr, end);
- kml_unpack_version(&rec->new_parentv, &ptr, end);
- kml_unpack_version(&rec->new_objectv, &ptr, end);
- LUNLOGV(rec->mode, __u32, ptr, end);
- LUNLOGV(rec->uid, __u32, ptr, end);
- LUNLOGV(rec->gid, __u32, ptr, end);
- LUNLOGV(rec->major, __u32, ptr, end);
- LUNLOGV(rec->minor, __u32, ptr, end);
- LUNLOGV(rec->pathlen, __u32, ptr, end);
- UNLOGL(rec->path, char, rec->pathlen, ptr, end);
-
- *buf = ptr;
-
- return 0;
-}
-
-
-static int kml_unpack_write(struct kml_rec *rec, char **buf, char *end)
-{
- printf("NOT IMPLEMENTED");
- return 0;
-}
-
-
-static int kml_unpack_release(struct kml_rec *rec, char **buf, char *end)
-{
- printf("NOT IMPLEMENTED");
- return 0;
-}
-
-
-static int kml_unpack_trunc(struct kml_rec *rec, char **buf, char *end)
-{
- printf("NOT IMPLEMENTED");
- return 0;
-}
-
-
-static int kml_unpack_setextattr(struct kml_rec *rec, char **buf, char *end)
-{
- char *ptr = *buf;
-
- kml_unpack_version(&rec->old_objectv, &ptr, end);
- kml_unpack_version(&rec->new_objectv, &ptr, end);
- LUNLOGV(rec->flags, __u32, ptr, end);
- LUNLOGV(rec->mode, __u32, ptr, end);
- LUNLOGV(rec->pathlen, __u32, ptr, end);
- LUNLOGV(rec->namelen, __u32, ptr, end);
- LUNLOGV(rec->targetlen, __u32, ptr, end);
- UNLOGL(rec->path, char, rec->pathlen, ptr, end);
- UNLOGL(rec->name, char, rec->namelen, ptr, end);
- UNLOGL(rec->target, char, rec->targetlen, ptr, end);
-
- *buf = ptr;
-
- return 0;
-}
-
-
-static int kml_unpack_delextattr(struct kml_rec *rec, char **buf, char *end)
-{
- char *ptr = *buf;
-
- kml_unpack_version(&rec->old_objectv, &ptr, end);
- kml_unpack_version(&rec->new_objectv, &ptr, end);
- LUNLOGV(rec->flags, __u32, ptr, end);
- LUNLOGV(rec->mode, __u32, ptr, end);
- LUNLOGV(rec->pathlen, __u32, ptr, end);
- LUNLOGV(rec->namelen, __u32, ptr, end);
- LUNLOGV(rec->targetlen, __u32, ptr, end);
- UNLOGL(rec->path, char, rec->pathlen, ptr, end);
- UNLOGL(rec->name, char, rec->namelen, ptr, end);
-
- *buf = ptr;
-
- return 0;
-}
-
-static int kml_unpack_open(struct kml_rec *rec, char **buf, char *end)
-{
- printf("NOT IMPLEMENTED");
- return 0;
-}
-
-static int kml_unpack_kml_trunc(struct kml_rec *rec, char **buf, char *end)
-{
-
- printf("NOT IMPLEMENTED");
- return 0;
-}
-
-
-typedef int (*unpacker)(struct kml_rec *rec, char **buf, char *end);
-
-static unpacker unpackers[KML_OPCODE_NUM] =
-{
- [KML_OPCODE_NOOP] = kml_unpack_noop,
- [KML_OPCODE_CREATE] = kml_unpack_create,
- [KML_OPCODE_MKDIR] = kml_unpack_mkdir,
- [KML_OPCODE_UNLINK] = kml_unpack_unlink,
- [KML_OPCODE_RMDIR] = kml_unpack_rmdir,
- [KML_OPCODE_CLOSE] = kml_unpack_close,
- [KML_OPCODE_SYMLINK] = kml_unpack_symlink,
- [KML_OPCODE_RENAME] = kml_unpack_rename,
- [KML_OPCODE_SETATTR] = kml_unpack_setattr,
- [KML_OPCODE_LINK] = kml_unpack_link,
- [KML_OPCODE_OPEN] = kml_unpack_open,
- [KML_OPCODE_MKNOD] = kml_unpack_mknod,
- [KML_OPCODE_WRITE] = kml_unpack_write,
- [KML_OPCODE_RELEASE] = kml_unpack_release,
- [KML_OPCODE_TRUNC] = kml_unpack_trunc,
- [KML_OPCODE_SETEXTATTR] = kml_unpack_setextattr,
- [KML_OPCODE_DELEXTATTR] = kml_unpack_delextattr,
- [KML_OPCODE_KML_TRUNC] = kml_unpack_kml_trunc,
- [KML_OPCODE_GET_FILEID] = kml_unpack_get_fileid
-};
-
-int kml_unpack_prefix(struct kml_rec *rec, char **buf, char *end)
-{
- char *ptr = *buf;
- int n;
-
- UNLOGP(rec->prefix.hdr, struct kml_prefix_hdr, ptr, end);
- rec->prefix.hdr->len = NTOH__u32(rec->prefix.hdr->len);
- rec->prefix.hdr->version = NTOH__u32(rec->prefix.hdr->version);
- rec->prefix.hdr->pid = NTOH__u32(rec->prefix.hdr->pid);
- rec->prefix.hdr->auid = NTOH__u32(rec->prefix.hdr->auid);
- rec->prefix.hdr->fsuid = NTOH__u32(rec->prefix.hdr->fsuid);
- rec->prefix.hdr->fsgid = NTOH__u32(rec->prefix.hdr->fsgid);
- rec->prefix.hdr->opcode = NTOH__u32(rec->prefix.hdr->opcode);
- rec->prefix.hdr->ngroups = NTOH__u32(rec->prefix.hdr->ngroups);
-
- UNLOGL(rec->prefix.groups, __u32, rec->prefix.hdr->ngroups, ptr, end);
- for (n = 0; n < rec->prefix.hdr->ngroups; n++) {
- rec->prefix.groups[n] = NTOH__u32(rec->prefix.groups[n]);
- }
-
- *buf = ptr;
-
- return 0;
-}
-
-int kml_unpack_suffix(struct kml_rec *rec, char **buf, char *end)
-{
- char *ptr = *buf;
-
- UNLOGP(rec->suffix, struct kml_suffix, ptr, end);
- rec->suffix->prevrec = NTOH__u32(rec->suffix->prevrec);
- rec->suffix->recno = NTOH__u32(rec->suffix->recno);
- rec->suffix->time = NTOH__u32(rec->suffix->time);
- rec->suffix->len = NTOH__u32(rec->suffix->len);
-
- *buf = ptr;
-
- return 0;
-}
-
-int kml_unpack(struct kml_rec *rec, char **buf, char *end)
-{
- char *ptr = *buf;
- int err;
-
- if (((unsigned long)ptr % 4) != 0) {
- printf("InterMezzo: %s: record misaligned.\n", __FUNCTION__);
- return -EINVAL;
- }
-
- while (ptr < end) {
- __u32 *i = (__u32 *)ptr;
- if (*i)
- break;
- ptr += sizeof(*i);
- }
- *buf = ptr;
-
- memset(rec, 0, sizeof(*rec));
-
- err = kml_unpack_prefix(rec, &ptr, end);
- if (err) {
- printf("InterMezzo: %s: unpack_prefix failed: %d\n",
- __FUNCTION__, err);
- return err;
- }
-
- if (rec->prefix.hdr->opcode < 0 ||
- rec->prefix.hdr->opcode >= KML_OPCODE_NUM) {
- printf("InterMezzo: %s: invalid opcode (%d)\n",
- __FUNCTION__, rec->prefix.hdr->opcode);
- return -EINVAL;
- }
- err = unpackers[rec->prefix.hdr->opcode](rec, &ptr, end);
- if (err) {
- printf("InterMezzo: %s: unpacker failed: %d\n",
- __FUNCTION__, err);
- return err;
- }
-
- err = kml_unpack_suffix(rec, &ptr, end);
- if (err) {
- printf("InterMezzo: %s: unpack_suffix failed: %d\n",
- __FUNCTION__, err);
- return err;
- }
-
-
- if (rec->prefix.hdr->len != rec->suffix->len) {
- printf("InterMezzo: %s: lengths don't match\n",
- __FUNCTION__);
- return -EINVAL;
- }
- if ((rec->prefix.hdr->len % 4) != 0) {
- printf("InterMezzo: %s: record length not a "
- "multiple of 4.\n", __FUNCTION__);
- return -EINVAL;
- }
- if (ptr - *buf != rec->prefix.hdr->len) {
- printf("InterMezzo: %s: unpacking error\n",
- __FUNCTION__);
- return -EINVAL;
- }
- while (ptr < end) {
- __u32 *i = (__u32 *)ptr;
- if (*i)
- break;
- ptr += sizeof(*i);
- }
- *buf = ptr;
- return 0;
-}
-
-
-#ifndef __KERNEL__
-#define STR(ptr) ((ptr))? (ptr) : ""
-
-#define OPNAME(n) [KML_OPCODE_##n] = #n
-static char *opnames[KML_OPCODE_NUM] = {
- OPNAME(NOOP),
- OPNAME(CREATE),
- OPNAME(MKDIR),
- OPNAME(UNLINK),
- OPNAME(RMDIR),
- OPNAME(CLOSE),
- OPNAME(SYMLINK),
- OPNAME(RENAME),
- OPNAME(SETATTR),
- OPNAME(LINK),
- OPNAME(OPEN),
- OPNAME(MKNOD),
- OPNAME(WRITE),
- OPNAME(RELEASE),
- OPNAME(TRUNC),
- OPNAME(SETEXTATTR),
- OPNAME(DELEXTATTR),
- OPNAME(KML_TRUNC),
- OPNAME(GET_FILEID)
-};
-#undef OPNAME
-
-static char *print_opname(int op)
-{
- if (op < 0 || op >= sizeof (opnames) / sizeof (*opnames))
- return NULL;
- return opnames[op];
-}
-
-
-static char *print_time(__u64 i)
-{
- char buf[128];
-
- memset(buf, 0, 128);
-
-#ifndef __KERNEL__
- strftime(buf, 128, "%Y/%m/%d %H:%M:%S", gmtime((time_t *)&i));
-#else
- sprintf(buf, "%Ld\n", i);
-#endif
-
- return strdup(buf);
-}
-
-static char *print_version(struct presto_version *ver)
-{
- char ver_buf[128];
- char *mtime;
- char *ctime;
-
- if (!ver || ver->pv_ctime == 0) {
- return strdup("");
- }
- mtime = print_time(ver->pv_mtime);
- ctime = print_time(ver->pv_ctime);
- sprintf(ver_buf, "mtime %s, ctime %s, len %lld",
- mtime, ctime, ver->pv_size);
- free(mtime);
- free(ctime);
- return strdup(ver_buf);
-}
-
-
-char *kml_print_rec(struct kml_rec *rec, int brief)
-{
- char *str;
- char *nov, *oov, *ntv, *otv, *npv, *opv;
- char *rectime, *mtime, *ctime;
-
- if (brief) {
- str = g_strdup_printf(" %08d %7s %*s %*s",
- rec->suffix->recno,
- print_opname (rec->prefix.hdr->opcode),
- rec->pathlen, STR(rec->path),
- rec->targetlen, STR(rec->target));
-
- return str;
- }
-
- rectime = print_time(rec->suffix->time);
- mtime = print_time(rec->mtime);
- ctime = print_time(rec->ctime);
-
- nov = print_version(rec->new_objectv);
- oov = print_version(rec->old_objectv);
- ntv = print_version(rec->new_targetv);
- otv = print_version(rec->old_targetv);
- npv = print_version(rec->new_parentv);
- opv = print_version(rec->old_parentv);
-
- str = g_strdup_printf("\n -- Record:\n"
- " Recno %d\n"
- " KML off %lld\n"
- " Version %d\n"
- " Len %d\n"
- " Suf len %d\n"
- " Time %s\n"
- " Opcode %d\n"
- " Op %s\n"
- " Pid %d\n"
- " AUid %d\n"
- " Fsuid %d\n"
- " Fsgid %d\n"
- " Prevrec %d\n"
- " Ngroups %d\n"
- //" Groups @{$self->{groups}}\n"
- " -- Path:\n"
- " Inode %d\n"
- " Gen num %u\n"
- " Old mode %o\n"
- " Old rdev %x\n"
- " Old uid %llu\n"
- " Old gid %llu\n"
- " Path %*s\n"
- //" Open_mode %o\n",
- " Pathlen %d\n"
- " Tgt %*s\n"
- " Tgtlen %d\n"
- " Old Tgt %*s\n"
- " Old Tgtln %d\n"
- " -- Attr:\n"
- " Valid %x\n"
- " mode %o, uid %d, gid %d, size %lld, mtime %s, ctime %s rdev %x (%d:%d)\n"
- " -- Versions:\n"
- " New object %s\n"
- " Old object %s\n"
- " New target %s\n"
- " Old target %s\n"
- " New parent %s\n"
- " Old parent %s\n",
-
- rec->suffix->recno,
- rec->offset,
- rec->prefix.hdr->version,
- rec->prefix.hdr->len,
- rec->suffix->len,
- rectime,
- rec->prefix.hdr->opcode,
- print_opname (rec->prefix.hdr->opcode),
- rec->prefix.hdr->pid,
- rec->prefix.hdr->auid,
- rec->prefix.hdr->fsuid,
- rec->prefix.hdr->fsgid,
- rec->suffix->prevrec,
- rec->prefix.hdr->ngroups,
- rec->ino,
- rec->generation,
- rec->old_mode,
- rec->old_rdev,
- rec->old_uid,
- rec->old_gid,
- rec->pathlen,
- STR(rec->path),
- rec->pathlen,
- rec->targetlen,
- STR(rec->target),
- rec->targetlen,
- rec->old_targetlen,
- STR(rec->old_target),
- rec->old_targetlen,
-
- rec->valid,
- rec->mode,
- rec->uid,
- rec->gid,
- rec->size,
- mtime,
- ctime,
- rec->rdev, rec->major, rec->minor,
- nov, oov, ntv, otv, npv, opv);
-
- free(nov);
- free(oov);
- free(ntv);
- free(otv);
- free(npv);
- free(opv);
-
- free(rectime);
- free(ctime);
- free(mtime);
-
- return str;
-}
-#endif
+++ /dev/null
-#include <linux/list.h>
-#include <linux/mm.h>
-#include <linux/slab.h>
-#include <linux/vmalloc.h>
-
-#include "intermezzo_fs.h"
-#include "intermezzo_kml.h"
-
-
-// dlogit -- oppsite to logit ()
-// return the sbuf + size;
-char *dlogit (void *tbuf, const void *sbuf, int size)
-{
- char *ptr = (char *)sbuf;
- memcpy(tbuf, ptr, size);
- ptr += size;
- return ptr;
-}
-
-static spinlock_t kml_lock = SPIN_LOCK_UNLOCKED;
-static char buf[1024];
-char * bdup_printf (char *format, ...)
-{
- va_list args;
- int i;
- char *path;
- unsigned long flags;
-
- spin_lock_irqsave(&kml_lock, flags);
- va_start(args, format);
- i = vsprintf(buf, format, args); /* hopefully i < sizeof(buf) */
- va_end(args);
-
- PRESTO_ALLOC (path, char *, i + 1);
- if (path == NULL)
- return NULL;
- strcpy (path, buf);
-
- spin_unlock_irqrestore(&kml_lock, flags);
- return path;
-}
-
-
+++ /dev/null
-/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
- * vim:expandtab:shiftwidth=8:tabstop=8:
- *
- * Copyright (C) 2000 Stelias Computing, Inc.
- * Copyright (C) 2000 Red Hat, Inc.
- * Copyright (C) 2000 Mountain View Data, Inc.
- *
- * Extended Attribute Support
- * Copyright (C) 2001 Shirish H. Phatak, Tacit Networks, Inc.
- *
- * This file is part of InterMezzo, http://www.inter-mezzo.org.
- *
- * InterMezzo is free software; you can redistribute it and/or
- * modify it under the terms of version 2 of the GNU General Public
- * License as published by the Free Software Foundation.
- *
- * InterMezzo is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with InterMezzo; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- *
- */
-
-#include <asm/bitops.h>
-#include <asm/uaccess.h>
-#include <asm/system.h>
-
-#include <linux/errno.h>
-#include <linux/fs.h>
-#include <linux/ext2_fs.h>
-#include <linux/slab.h>
-#include <linux/vmalloc.h>
-#include <linux/sched.h>
-#include <linux/stat.h>
-#include <linux/string.h>
-#include <linux/blkdev.h>
-#include <linux/init.h>
-#include <linux/module.h>
-
-#include <linux/fsfilter.h>
-#include "intermezzo_fs.h"
-
-
-int filter_print_entry = 0;
-int filter_debug = 0xfffffff;
-/*
- * The function in this file are responsible for setting up the
- * correct methods layered file systems like InterMezzo and snapfs
- */
-
-
-static struct filter_fs filter_oppar[FILTER_FS_TYPES];
-
-/* get to the upper methods (intermezzo, snapfs) */
-inline struct super_operations *filter_c2usops(struct filter_fs *cache)
-{
- return &cache->o_fops.filter_sops;
-}
-
-inline struct inode_operations *filter_c2udiops(struct filter_fs *cache)
-{
- return &cache->o_fops.filter_dir_iops;
-}
-
-
-inline struct inode_operations *filter_c2ufiops(struct filter_fs *cache)
-{
- return &cache->o_fops.filter_file_iops;
-}
-
-inline struct inode_operations *filter_c2usiops(struct filter_fs *cache)
-{
- return &cache->o_fops.filter_sym_iops;
-}
-
-
-inline struct file_operations *filter_c2udfops(struct filter_fs *cache)
-{
- return &cache->o_fops.filter_dir_fops;
-}
-
-inline struct file_operations *filter_c2uffops(struct filter_fs *cache)
-{
- return &cache->o_fops.filter_file_fops;
-}
-
-inline struct file_operations *filter_c2usfops(struct filter_fs *cache)
-{
- return &cache->o_fops.filter_sym_fops;
-}
-
-inline struct dentry_operations *filter_c2udops(struct filter_fs *cache)
-{
- return &cache->o_fops.filter_dentry_ops;
-}
-
-/* get to the cache (lower) methods */
-inline struct super_operations *filter_c2csops(struct filter_fs *cache)
-{
- return cache->o_caops.cache_sops;
-}
-
-inline struct inode_operations *filter_c2cdiops(struct filter_fs *cache)
-{
- return cache->o_caops.cache_dir_iops;
-}
-
-inline struct inode_operations *filter_c2cfiops(struct filter_fs *cache)
-{
- return cache->o_caops.cache_file_iops;
-}
-
-inline struct inode_operations *filter_c2csiops(struct filter_fs *cache)
-{
- return cache->o_caops.cache_sym_iops;
-}
-
-inline struct file_operations *filter_c2cdfops(struct filter_fs *cache)
-{
- return cache->o_caops.cache_dir_fops;
-}
-
-inline struct file_operations *filter_c2cffops(struct filter_fs *cache)
-{
- return cache->o_caops.cache_file_fops;
-}
-
-inline struct file_operations *filter_c2csfops(struct filter_fs *cache)
-{
- return cache->o_caops.cache_sym_fops;
-}
-
-inline struct dentry_operations *filter_c2cdops(struct filter_fs *cache)
-{
- return cache->o_caops.cache_dentry_ops;
-}
-
-
-void filter_setup_journal_ops(struct filter_fs *ops, char *cache_type)
-{
- if ( strlen(cache_type) == strlen("ext2") &&
- memcmp(cache_type, "ext2", strlen("ext2")) == 0 ) {
-#ifdef CONFIG_EXT2_FS
- ops->o_trops = &presto_ext2_journal_ops;
-#else
- ops->o_trops = NULL;
-#endif
- FDEBUG(D_SUPER, "ops at %p\n", ops);
- }
-
- if ( strlen(cache_type) == strlen("ext3") &&
- memcmp(cache_type, "ext3", strlen("ext3")) == 0 ) {
-#if defined(CONFIG_EXT3_FS) || defined (CONFIG_EXT3_FS_MODULE)
- ops->o_trops = &presto_ext3_journal_ops;
-#else
- ops->o_trops = NULL;
-#endif
- FDEBUG(D_SUPER, "ops at %p\n", ops);
- }
-
- if ( strlen(cache_type) == strlen("tmpfs") &&
- memcmp(cache_type, "tmpfs", strlen("tmpfs")) == 0 ) {
-#if defined(CONFIG_TMPFS)
- ops->o_trops = &presto_tmpfs_journal_ops;
-#else
- ops->o_trops = NULL;
-#endif
- FDEBUG(D_SUPER, "ops at %p\n", ops);
- }
-
- if ( strlen(cache_type) == strlen("reiserfs") &&
- memcmp(cache_type, "reiserfs", strlen("reiserfs")) == 0 ) {
-#if 0
- /* #if defined(CONFIG_REISERFS_FS) || defined(CONFIG_REISERFS_FS_MODULE) */
- ops->o_trops = &presto_reiserfs_journal_ops;
-#else
- ops->o_trops = NULL;
-#endif
- FDEBUG(D_SUPER, "ops at %p\n", ops);
- }
-
- if ( strlen(cache_type) == strlen("xfs") &&
- memcmp(cache_type, "xfs", strlen("xfs")) == 0 ) {
-#if 0
-/*#if defined(CONFIG_XFS_FS) || defined (CONFIG_XFS_FS_MODULE) */
- ops->o_trops = &presto_xfs_journal_ops;
-#else
- ops->o_trops = NULL;
-#endif
- FDEBUG(D_SUPER, "ops at %p\n", ops);
- }
-
- if ( strlen(cache_type) == strlen("obdfs") &&
- memcmp(cache_type, "obdfs", strlen("obdfs")) == 0 ) {
-#if defined(CONFIG_OBDFS_FS) || defined (CONFIG_OBDFS_FS_MODULE)
- ops->o_trops = presto_obdfs_journal_ops;
-#else
- ops->o_trops = NULL;
-#endif
- FDEBUG(D_SUPER, "ops at %p\n", ops);
- }
-}
-
-
-/* find the cache for this FS */
-struct filter_fs *filter_get_filter_fs(const char *cache_type)
-{
- struct filter_fs *ops = NULL;
- FENTRY;
-
- if ( strlen(cache_type) == strlen("ext2") &&
- memcmp(cache_type, "ext2", strlen("ext2")) == 0 ) {
- ops = &filter_oppar[FILTER_FS_EXT2];
- FDEBUG(D_SUPER, "ops at %p\n", ops);
- }
-
- if ( strlen(cache_type) == strlen("xfs") &&
- memcmp(cache_type, "xfs", strlen("xfs")) == 0 ) {
- ops = &filter_oppar[FILTER_FS_XFS];
- FDEBUG(D_SUPER, "ops at %p\n", ops);
- }
-
- if ( strlen(cache_type) == strlen("ext3") &&
- memcmp(cache_type, "ext3", strlen("ext3")) == 0 ) {
- ops = &filter_oppar[FILTER_FS_EXT3];
- FDEBUG(D_SUPER, "ops at %p\n", ops);
- }
-
- if ( strlen(cache_type) == strlen("tmpfs") &&
- memcmp(cache_type, "tmpfs", strlen("tmpfs")) == 0 ) {
- ops = &filter_oppar[FILTER_FS_TMPFS];
- FDEBUG(D_SUPER, "ops at %p\n", ops);
- }
-
- if ( strlen(cache_type) == strlen("reiserfs") &&
- memcmp(cache_type, "reiserfs", strlen("reiserfs")) == 0 ) {
- ops = &filter_oppar[FILTER_FS_REISERFS];
- FDEBUG(D_SUPER, "ops at %p\n", ops);
- }
- if ( strlen(cache_type) == strlen("obdfs") &&
- memcmp(cache_type, "obdfs", strlen("obdfs")) == 0 ) {
- ops = &filter_oppar[FILTER_FS_OBDFS];
- FDEBUG(D_SUPER, "ops at %p\n", ops);
- }
-
- if (ops == NULL) {
- CERROR("prepare to die: unrecognized cache type for Filter\n");
- }
- FEXIT;
- return ops;
-}
-
-
-/*
- * Frobnicate the InterMezzo operations
- * this establishes the link between the InterMezzo file system
- * and the underlying file system used for the cache.
- */
-
-void filter_setup_super_ops(struct filter_fs *cache, struct super_operations *cache_sops, struct super_operations *filter_sops)
-{
- /* Get ptr to the shared struct snapfs_ops structure. */
- struct filter_ops *props = &cache->o_fops;
- /* Get ptr to the shared struct cache_ops structure. */
- struct cache_ops *caops = &cache->o_caops;
-
- FENTRY;
-
- if ( cache->o_flags & FILTER_DID_SUPER_OPS ) {
- FEXIT;
- return;
- }
- cache->o_flags |= FILTER_DID_SUPER_OPS;
-
- /* Set the cache superblock operations to point to the
- superblock operations of the underlying file system. */
- caops->cache_sops = cache_sops;
-
- /*
- * Copy the cache (real fs) superblock ops to the "filter"
- * superblock ops as defaults. Some will be changed below
- */
- memcpy(&props->filter_sops, cache_sops, sizeof(*cache_sops));
-
- /* 'put_super' unconditionally is that of filter */
- if (filter_sops->put_super) {
- props->filter_sops.put_super = filter_sops->put_super;
- }
-
- if (cache_sops->read_inode) {
- props->filter_sops.read_inode = filter_sops->read_inode;
- FDEBUG(D_INODE, "setting filter_read_inode, cache_ops %p, cache %p, ri at %p\n",
- cache, cache, props->filter_sops.read_inode);
- }
-
- if (cache_sops->remount_fs)
- props->filter_sops.remount_fs = filter_sops->remount_fs;
- FEXIT;
-}
-
-
-void filter_setup_dir_ops(struct filter_fs *cache, struct inode *inode, struct inode_operations *filter_iops, struct file_operations *filter_fops)
-{
- struct inode_operations *cache_filter_iops;
- struct inode_operations *cache_iops = inode->i_op;
- struct file_operations *cache_fops = inode->i_fop;
- FENTRY;
-
- if ( cache->o_flags & FILTER_DID_DIR_OPS ) {
- FEXIT;
- return;
- }
- cache->o_flags |= FILTER_DID_DIR_OPS;
-
- /* former ops become cache_ops */
- cache->o_caops.cache_dir_iops = cache_iops;
- cache->o_caops.cache_dir_fops = cache_fops;
- FDEBUG(D_SUPER, "filter at %p, cache iops %p, iops %p\n",
- cache, cache_iops, filter_c2udiops(cache));
-
- /* setup our dir iops: copy and modify */
- memcpy(filter_c2udiops(cache), cache_iops, sizeof(*cache_iops));
-
- /* abbreviate */
- cache_filter_iops = filter_c2udiops(cache);
-
- /* methods that filter if cache filesystem has these ops */
- if (cache_iops->lookup && filter_iops->lookup)
- cache_filter_iops->lookup = filter_iops->lookup;
- if (cache_iops->create && filter_iops->create)
- cache_filter_iops->create = filter_iops->create;
- if (cache_iops->link && filter_iops->link)
- cache_filter_iops->link = filter_iops->link;
- if (cache_iops->unlink && filter_iops->unlink)
- cache_filter_iops->unlink = filter_iops->unlink;
- if (cache_iops->mkdir && filter_iops->mkdir)
- cache_filter_iops->mkdir = filter_iops->mkdir;
- if (cache_iops->rmdir && filter_iops->rmdir)
- cache_filter_iops->rmdir = filter_iops->rmdir;
- if (cache_iops->symlink && filter_iops->symlink)
- cache_filter_iops->symlink = filter_iops->symlink;
- if (cache_iops->rename && filter_iops->rename)
- cache_filter_iops->rename = filter_iops->rename;
- if (cache_iops->mknod && filter_iops->mknod)
- cache_filter_iops->mknod = filter_iops->mknod;
- if (cache_iops->permission && filter_iops->permission)
- cache_filter_iops->permission = filter_iops->permission;
- if (cache_iops->getattr)
- cache_filter_iops->getattr = filter_iops->getattr;
- /* Some filesystems do not use a setattr method of their own
- instead relying on inode_setattr/write_inode. We still need to
- journal these so we make setattr an unconditional operation.
- XXX: we should probably check for write_inode. SHP
- */
- /*if (cache_iops->setattr)*/
- cache_filter_iops->setattr = filter_iops->setattr;
-#ifdef CONFIG_FS_EXT_ATTR
- /* For now we assume that posix acls are handled through extended
- * attributes. If this is not the case, we must explicitly trap
- * posix_set_acl. SHP
- */
- if (cache_iops->set_ext_attr && filter_iops->set_ext_attr)
- cache_filter_iops->set_ext_attr = filter_iops->set_ext_attr;
-#endif
-
-
- /* copy dir fops */
- memcpy(filter_c2udfops(cache), cache_fops, sizeof(*cache_fops));
-
- /* unconditional filtering operations */
- filter_c2udfops(cache)->ioctl = filter_fops->ioctl;
-
- FEXIT;
-}
-
-
-void filter_setup_file_ops(struct filter_fs *cache, struct inode *inode, struct inode_operations *filter_iops, struct file_operations *filter_fops)
-{
- struct inode_operations *pr_iops;
- struct inode_operations *cache_iops = inode->i_op;
- struct file_operations *cache_fops = inode->i_fop;
- FENTRY;
-
- if ( cache->o_flags & FILTER_DID_FILE_OPS ) {
- FEXIT;
- return;
- }
- cache->o_flags |= FILTER_DID_FILE_OPS;
-
- /* steal the old ops */
- /* former ops become cache_ops */
- cache->o_caops.cache_file_iops = cache_iops;
- cache->o_caops.cache_file_fops = cache_fops;
-
- /* abbreviate */
- pr_iops = filter_c2ufiops(cache);
-
- /* setup our dir iops: copy and modify */
- memcpy(pr_iops, cache_iops, sizeof(*cache_iops));
-
- /* copy dir fops */
- CERROR("*** cache file ops at %p\n", cache_fops);
- memcpy(filter_c2uffops(cache), cache_fops, sizeof(*cache_fops));
-
- /* assign */
- /* See comments above in filter_setup_dir_ops. SHP */
- /*if (cache_iops->setattr)*/
- pr_iops->setattr = filter_iops->setattr;
- if (cache_iops->getattr)
- pr_iops->getattr = filter_iops->getattr;
- /* XXX Should this be conditional rmr ? */
- pr_iops->permission = filter_iops->permission;
-#ifdef CONFIG_FS_EXT_ATTR
- /* For now we assume that posix acls are handled through extended
- * attributes. If this is not the case, we must explicitly trap and
- * posix_set_acl
- */
- if (cache_iops->set_ext_attr && filter_iops->set_ext_attr)
- pr_iops->set_ext_attr = filter_iops->set_ext_attr;
-#endif
-
-
- /* unconditional filtering operations */
- filter_c2uffops(cache)->open = filter_fops->open;
- filter_c2uffops(cache)->release = filter_fops->release;
- filter_c2uffops(cache)->write = filter_fops->write;
- filter_c2uffops(cache)->ioctl = filter_fops->ioctl;
-
- FEXIT;
-}
-
-/* XXX in 2.3 there are "fast" and "slow" symlink ops for ext2 XXX */
-void filter_setup_symlink_ops(struct filter_fs *cache, struct inode *inode, struct inode_operations *filter_iops, struct file_operations *filter_fops)
-{
- struct inode_operations *pr_iops;
- struct inode_operations *cache_iops = inode->i_op;
- struct file_operations *cache_fops = inode->i_fop;
- FENTRY;
-
- if ( cache->o_flags & FILTER_DID_SYMLINK_OPS ) {
- FEXIT;
- return;
- }
- cache->o_flags |= FILTER_DID_SYMLINK_OPS;
-
- /* steal the old ops */
- cache->o_caops.cache_sym_iops = cache_iops;
- cache->o_caops.cache_sym_fops = cache_fops;
-
- /* abbreviate */
- pr_iops = filter_c2usiops(cache);
-
- /* setup our dir iops: copy and modify */
- memcpy(pr_iops, cache_iops, sizeof(*cache_iops));
-
- /* See comments above in filter_setup_dir_ops. SHP */
- /* if (cache_iops->setattr) */
- pr_iops->setattr = filter_iops->setattr;
- if (cache_iops->getattr)
- pr_iops->getattr = filter_iops->getattr;
-
- /* assign */
- /* copy fops - careful for symlinks they might be NULL */
- if ( cache_fops ) {
- memcpy(filter_c2usfops(cache), cache_fops, sizeof(*cache_fops));
- }
-
- FEXIT;
-}
-
-void filter_setup_dentry_ops(struct filter_fs *cache,
- struct dentry_operations *cache_dop,
- struct dentry_operations *filter_dop)
-{
- if ( cache->o_flags & FILTER_DID_DENTRY_OPS ) {
- FEXIT;
- return;
- }
- cache->o_flags |= FILTER_DID_DENTRY_OPS;
-
- cache->o_caops.cache_dentry_ops = cache_dop;
- memcpy(&cache->o_fops.filter_dentry_ops,
- filter_dop, sizeof(*filter_dop));
-
- if (cache_dop && cache_dop != filter_dop && cache_dop->d_revalidate){
- CERROR("WARNING: filter overriding revalidation!\n");
- }
- return;
-}
+++ /dev/null
-/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
- * vim:expandtab:shiftwidth=8:tabstop=8:
- *
- * Author: Peter J. Braam <braam@clusterfs.com>
- * Copyright (C) 1998 Stelias Computing Inc
- * Copyright (C) 1999 Red Hat Inc.
- *
- * This file is part of InterMezzo, http://www.inter-mezzo.org.
- *
- * InterMezzo is free software; you can redistribute it and/or
- * modify it under the terms of version 2 of the GNU General Public
- * License as published by the Free Software Foundation.
- *
- * InterMezzo is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with InterMezzo; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- *
- * This file implements basic routines supporting the semantics
- */
-#include <linux/types.h>
-#include <linux/kernel.h>
-#include <linux/sched.h>
-#include <linux/fs.h>
-#include <linux/namei.h>
-#include <linux/stat.h>
-#include <linux/errno.h>
-#include <linux/vmalloc.h>
-#include <linux/slab.h>
-#include <asm/segment.h>
-#include <asm/uaccess.h>
-#include <linux/string.h>
-
-#include "intermezzo_fs.h"
-#include "intermezzo_psdev.h"
-
-int presto_walk(const char *name, struct nameidata *nd)
-{
- int err;
- /* we do not follow symlinks to support symlink operations
- correctly. The vfs should always hand us resolved dentries
- so we should not be required to use LOOKUP_FOLLOW. At the
- reintegrating end, lento again should be working with the
- resolved pathname and not the symlink. SHP
- XXX: This code implies that direct symlinks do not work. SHP
- */
- unsigned int flags = 0; //LOOKUP_POSITIVE;
-
- ENTRY;
- err = path_lookup(name, flags, nd);
- return err;
-}
-
-
-/* find the presto minor device for this inode */
-int presto_i2m(struct inode *inode)
-{
- struct presto_cache *cache;
- ENTRY;
- cache = presto_get_cache(inode);
- CDEBUG(D_PSDEV, "\n");
- if ( !cache ) {
- CERROR("PRESTO: BAD: cannot find cache for dev %s, ino %ld\n",
- inode->i_sb->s_id, inode->i_ino);
- EXIT;
- return -1;
- }
- EXIT;
- return cache->cache_psdev->uc_minor;
-}
-
-inline int presto_f2m(struct presto_file_set *fset)
-{
- return fset->fset_cache->cache_psdev->uc_minor;
-
-}
-
-inline int presto_c2m(struct presto_cache *cache)
-{
- return cache->cache_psdev->uc_minor;
-
-}
-
-/* XXX check this out */
-struct presto_file_set *presto_path2fileset(const char *name)
-{
- struct nameidata nd;
- struct presto_file_set *fileset;
- int error;
- ENTRY;
-
- error = presto_walk(name, &nd);
- if (!error) {
-#if 0
- error = do_revalidate(nd.dentry);
-#endif
- if (!error)
- fileset = presto_fset(nd.dentry);
- path_release(&nd);
- EXIT;
- } else
- fileset = ERR_PTR(error);
-
- EXIT;
- return fileset;
-}
-
-/* check a flag on this dentry or fset root. Semantics:
- - most flags: test if it is set
- - PRESTO_ATTR, PRESTO_DATA return 1 if PRESTO_FSETINSYNC is set
-*/
-int presto_chk(struct dentry *dentry, int flag)
-{
- int minor;
- struct presto_file_set *fset = presto_fset(dentry);
-
- ENTRY;
- minor = presto_i2m(dentry->d_inode);
- if ( izo_channels[minor].uc_no_filter ) {
- EXIT;
- return ~0;
- }
-
- /* if the fileset is in sync DATA and ATTR are OK */
- if ( fset &&
- (flag == PRESTO_ATTR || flag == PRESTO_DATA) &&
- (fset->fset_flags & FSET_INSYNC) ) {
- CDEBUG(D_INODE, "fset in sync (ino %ld)!\n",
- fset->fset_dentry->d_inode->i_ino);
- EXIT;
- return 1;
- }
-
- EXIT;
- return (presto_d2d(dentry)->dd_flags & flag);
-}
-
-/* set a bit in the dentry flags */
-void presto_set(struct dentry *dentry, int flag)
-{
- ENTRY;
- if ( dentry->d_inode ) {
- CDEBUG(D_INODE, "SET ino %ld, flag %x\n",
- dentry->d_inode->i_ino, flag);
- }
- if ( presto_d2d(dentry) == NULL) {
- CERROR("dentry without d_fsdata in presto_set: %p: %*s", dentry,
- dentry->d_name.len, dentry->d_name.name);
- BUG();
- }
- presto_d2d(dentry)->dd_flags |= flag;
- EXIT;
-}
-
-/* given a path: complete the closes on the fset */
-int lento_complete_closes(char *path)
-{
- struct nameidata nd;
- struct dentry *dentry;
- int error;
- struct presto_file_set *fset;
- ENTRY;
-
- error = presto_walk(path, &nd);
- if (error) {
- EXIT;
- return error;
- }
-
- dentry = nd.dentry;
-
- error = -ENXIO;
- if ( !presto_ispresto(dentry->d_inode) ) {
- EXIT;
- goto out_complete;
- }
-
- fset = presto_fset(dentry);
- error = -EINVAL;
- if ( !fset ) {
- CERROR("No fileset!\n");
- EXIT;
- goto out_complete;
- }
-
- /* transactions and locking are internal to this function */
- error = presto_complete_lml(fset);
-
- EXIT;
- out_complete:
- path_release(&nd);
- return error;
-}
-
-#if 0
-/* given a path: write a close record and cancel an LML record, finally
- call truncate LML. Lento is doing this so it goes in with uid/gid's
- root.
-*/
-int lento_cancel_lml(char *path,
- __u64 lml_offset,
- __u64 remote_ino,
- __u32 remote_generation,
- __u32 remote_version,
- struct lento_vfs_context *info)
-{
- struct nameidata nd;
- struct rec_info rec;
- struct dentry *dentry;
- int error;
- struct presto_file_set *fset;
- void *handle;
- struct presto_version new_ver;
- ENTRY;
-
-
- error = presto_walk(path, &nd);
- if (error) {
- EXIT;
- return error;
- }
- dentry = nd.dentry;
-
- error = -ENXIO;
- if ( !presto_ispresto(dentry->d_inode) ) {
- EXIT;
- goto out_cancel_lml;
- }
-
- fset = presto_fset(dentry);
-
- error=-EINVAL;
- if (fset==NULL) {
- CERROR("No fileset!\n");
- EXIT;
- goto out_cancel_lml;
- }
-
- /* this only requires a transaction below which is automatic */
- handle = presto_trans_start(fset, dentry->d_inode, PRESTO_OP_RELEASE);
- if ( IS_ERR(handle) ) {
- error = -ENOMEM;
- EXIT;
- goto out_cancel_lml;
- }
-
- if (info->flags & LENTO_FL_CANCEL_LML) {
- error = presto_clear_lml_close(fset, lml_offset);
- if ( error ) {
- presto_trans_commit(fset, handle);
- EXIT;
- goto out_cancel_lml;
- }
- }
-
-
- if (info->flags & LENTO_FL_WRITE_KML) {
- presto_getversion(&new_ver, dentry->d_inode);
- error = presto_journal_close(&rec, fset, NULL, dentry,
- &new_ver);
- if ( error ) {
- EXIT;
- presto_trans_commit(fset, handle);
- goto out_cancel_lml;
- }
- }
-
- if (info->flags & LENTO_FL_WRITE_EXPECT) {
- error = presto_write_last_rcvd(&rec, fset, info);
- if ( error < 0 ) {
- EXIT;
- presto_trans_commit(fset, handle);
- goto out_cancel_lml;
- }
- }
-
- presto_trans_commit(fset, handle);
-
- if (info->flags & LENTO_FL_CANCEL_LML) {
- presto_truncate_lml(fset);
- }
-
-
- out_cancel_lml:
- EXIT;
- path_release(&nd);
- return error;
-}
-#endif
-
-/* given a dentry, operate on the flags in its dentry. Used by downcalls */
-int izo_mark_dentry(struct dentry *dentry, int and_flag, int or_flag,
- int *res)
-{
- int error = 0;
-
- if (presto_d2d(dentry) == NULL) {
- CERROR("InterMezzo: no ddata for inode %ld in %s\n",
- dentry->d_inode->i_ino, __FUNCTION__);
- return -EINVAL;
- }
-
- CDEBUG(D_INODE, "inode: %ld, and flag %x, or flag %x, dd_flags %x\n",
- dentry->d_inode->i_ino, and_flag, or_flag,
- presto_d2d(dentry)->dd_flags);
-
- presto_d2d(dentry)->dd_flags &= and_flag;
- presto_d2d(dentry)->dd_flags |= or_flag;
- if (res)
- *res = presto_d2d(dentry)->dd_flags;
-
- return error;
-}
-
-/* given a path, operate on the flags in its cache. Used by mark_ioctl */
-int izo_mark_cache(struct dentry *dentry, int and_flag, int or_flag,
- int *res)
-{
- struct presto_cache *cache;
-
- if (presto_d2d(dentry) == NULL) {
- CERROR("InterMezzo: no ddata for inode %ld in %s\n",
- dentry->d_inode->i_ino, __FUNCTION__);
- return -EINVAL;
- }
-
- CDEBUG(D_INODE, "inode: %ld, and flag %x, or flag %x, dd_flags %x\n",
- dentry->d_inode->i_ino, and_flag, or_flag,
- presto_d2d(dentry)->dd_flags);
-
- cache = presto_get_cache(dentry->d_inode);
- if ( !cache ) {
- CERROR("PRESTO: BAD: cannot find cache in izo_mark_cache\n");
- return -EBADF;
- }
-
- cache->cache_flags &= and_flag;
- cache->cache_flags |= or_flag;
- if (res)
- *res = (int)cache->cache_flags;
-
- return 0;
-}
-
-int presto_set_max_kml_size(const char *path, unsigned long max_size)
-{
- struct presto_file_set *fset;
-
- ENTRY;
-
- fset = presto_path2fileset(path);
- if (IS_ERR(fset)) {
- EXIT;
- return PTR_ERR(fset);
- }
-
- fset->kml_truncate_size = max_size;
- CDEBUG(D_CACHE, "KML truncate size set to %lu bytes for fset %s.\n",
- max_size, path);
-
- EXIT;
- return 0;
-}
-
-int izo_mark_fset(struct dentry *dentry, int and_flag, int or_flag,
- int * res)
-{
- struct presto_file_set *fset;
-
- fset = presto_fset(dentry);
- if ( !fset ) {
- CERROR("PRESTO: BAD: cannot find cache in izo_mark_cache\n");
- make_bad_inode(dentry->d_inode);
- return -EBADF;
- }
- fset->fset_flags &= and_flag;
- fset->fset_flags |= or_flag;
- if (res)
- *res = (int)fset->fset_flags;
-
- return 0;
-}
-
-/* talk to Lento about the permit */
-static int presto_permit_upcall(struct dentry *dentry)
-{
- int rc;
- char *path, *buffer;
- int pathlen;
- int minor;
- int fsetnamelen;
- struct presto_file_set *fset = NULL;
-
- ENTRY;
-
- if ( (minor = presto_i2m(dentry->d_inode)) < 0) {
- EXIT;
- return -EINVAL;
- }
-
- fset = presto_fset(dentry);
- if (!fset) {
- EXIT;
- return -ENOTCONN;
- }
-
- if ( !presto_lento_up(minor) ) {
- if ( fset->fset_flags & FSET_STEAL_PERMIT ) {
- EXIT;
- return 0;
- } else {
- EXIT;
- return -ENOTCONN;
- }
- }
-
- PRESTO_ALLOC(buffer, PAGE_SIZE);
- if ( !buffer ) {
- CERROR("PRESTO: out of memory!\n");
- EXIT;
- return -ENOMEM;
- }
- path = presto_path(dentry, fset->fset_dentry, buffer, PAGE_SIZE);
- pathlen = MYPATHLEN(buffer, path);
- fsetnamelen = strlen(fset->fset_name);
- rc = izo_upc_permit(minor, dentry, pathlen, path, fset->fset_name);
- PRESTO_FREE(buffer, PAGE_SIZE);
- EXIT;
- return rc;
-}
-
-/* get a write permit for the fileset of this inode
- * - if this returns a negative value there was an error
- * - if 0 is returned the permit was already in the kernel -- or --
- * Lento gave us the permit without reintegration
- * - lento returns the number of records it reintegrated
- *
- * Note that if this fileset has branches, a permit will -never- to a normal
- * process for writing in the data area (ie, outside of .intermezzo)
- */
-int presto_get_permit(struct inode * inode)
-{
- struct dentry *de;
- struct presto_file_set *fset;
- int minor = presto_i2m(inode);
- int rc = 0;
-
- ENTRY;
- if (minor < 0) {
- EXIT;
- return -1;
- }
-
- if ( ISLENTO(minor) ) {
- EXIT;
- return 0;
- }
-
- if (list_empty(&inode->i_dentry)) {
- CERROR("No alias for inode %d\n", (int) inode->i_ino);
- EXIT;
- return -EINVAL;
- }
-
- de = list_entry(inode->i_dentry.next, struct dentry, d_alias);
-
- if (presto_chk(de, PRESTO_DONT_JOURNAL)) {
- EXIT;
- return 0;
- }
-
- fset = presto_fset(de);
- if ( !fset ) {
- CERROR("Presto: no fileset in presto_get_permit!\n");
- EXIT;
- return -EINVAL;
- }
-
- if (fset->fset_flags & FSET_HAS_BRANCHES) {
- EXIT;
- return -EROFS;
- }
-
- spin_lock(&fset->fset_permit_lock);
- if (fset->fset_flags & FSET_HASPERMIT) {
- fset->fset_permit_count++;
- CDEBUG(D_INODE, "permit count now %d, inode %lx\n",
- fset->fset_permit_count, inode->i_ino);
- spin_unlock(&fset->fset_permit_lock);
- EXIT;
- return 0;
- }
-
- /* Allow reintegration to proceed without locks -SHP */
- fset->fset_permit_upcall_count++;
- if (fset->fset_permit_upcall_count == 1) {
- spin_unlock(&fset->fset_permit_lock);
- rc = presto_permit_upcall(fset->fset_dentry);
- spin_lock(&fset->fset_permit_lock);
- fset->fset_permit_upcall_count--;
- if (rc == 0) {
- izo_mark_fset(fset->fset_dentry, ~0, FSET_HASPERMIT,
- NULL);
- fset->fset_permit_count++;
- } else if (rc == ENOTCONN) {
- CERROR("InterMezzo: disconnected operation. stealing permit.\n");
- izo_mark_fset(fset->fset_dentry, ~0, FSET_HASPERMIT,
- NULL);
- fset->fset_permit_count++;
- /* set a disconnected flag here to stop upcalls */
- rc = 0;
- } else {
- CERROR("InterMezzo: presto_permit_upcall failed: %d\n", rc);
- rc = -EROFS;
- /* go to sleep here and try again? */
- }
- wake_up_interruptible(&fset->fset_permit_queue);
- } else {
- /* Someone is already doing an upcall; go to sleep. */
- DECLARE_WAITQUEUE(wait, current);
-
- spin_unlock(&fset->fset_permit_lock);
- add_wait_queue(&fset->fset_permit_queue, &wait);
- while (1) {
- set_current_state(TASK_INTERRUPTIBLE);
-
- spin_lock(&fset->fset_permit_lock);
- if (fset->fset_permit_upcall_count == 0)
- break;
- spin_unlock(&fset->fset_permit_lock);
-
- if (signal_pending(current)) {
- remove_wait_queue(&fset->fset_permit_queue,
- &wait);
- return -ERESTARTSYS;
- }
- schedule();
- }
- remove_wait_queue(&fset->fset_permit_queue, &wait);
- /* We've been woken up: do we have the permit? */
- if (fset->fset_flags & FSET_HASPERMIT)
- /* FIXME: Is this the right thing? */
- rc = -EAGAIN;
- }
-
- CDEBUG(D_INODE, "permit count now %d, ino %ld (likely 1), "
- "rc %d\n", fset->fset_permit_count, inode->i_ino, rc);
- spin_unlock(&fset->fset_permit_lock);
- EXIT;
- return rc;
-}
-
-int presto_put_permit(struct inode * inode)
-{
- struct dentry *de;
- struct presto_file_set *fset;
- int minor = presto_i2m(inode);
-
- ENTRY;
- if (minor < 0) {
- EXIT;
- return -1;
- }
-
- if ( ISLENTO(minor) ) {
- EXIT;
- return 0;
- }
-
- if (list_empty(&inode->i_dentry)) {
- CERROR("No alias for inode %d\n", (int) inode->i_ino);
- EXIT;
- return -1;
- }
-
- de = list_entry(inode->i_dentry.next, struct dentry, d_alias);
-
- fset = presto_fset(de);
- if ( !fset ) {
- CERROR("InterMezzo: no fileset in %s!\n", __FUNCTION__);
- EXIT;
- return -1;
- }
-
- if (presto_chk(de, PRESTO_DONT_JOURNAL)) {
- EXIT;
- return 0;
- }
-
- spin_lock(&fset->fset_permit_lock);
- if (fset->fset_flags & FSET_HASPERMIT) {
- if (fset->fset_permit_count > 0)
- fset->fset_permit_count--;
- else
- CERROR("Put permit while permit count is 0, "
- "inode %ld!\n", inode->i_ino);
- } else {
- fset->fset_permit_count = 0;
- CERROR("InterMezzo: put permit while no permit, inode %ld, "
- "flags %x!\n", inode->i_ino, fset->fset_flags);
- }
-
- CDEBUG(D_INODE, "permit count now %d, inode %ld\n",
- fset->fset_permit_count, inode->i_ino);
-
- if (fset->fset_flags & FSET_PERMIT_WAITING &&
- fset->fset_permit_count == 0) {
- CDEBUG(D_INODE, "permit count now 0, ino %ld, wake sleepers\n",
- inode->i_ino);
- wake_up_interruptible(&fset->fset_permit_queue);
- }
- spin_unlock(&fset->fset_permit_lock);
-
- EXIT;
- return 0;
-}
-
-void presto_getversion(struct presto_version * presto_version,
- struct inode * inode)
-{
- presto_version->pv_mtime_sec = inode->i_mtime.tv_sec;
- presto_version->pv_mtime_nsec = inode->i_mtime.tv_nsec;
- presto_version->pv_ctime_sec = inode->i_ctime.tv_sec;
- presto_version->pv_ctime_nsec = inode->i_ctime.tv_nsec;
- presto_version->pv_size = (__u64)inode->i_size;
-}
-
-
-/* If uuid is non-null, it is the uuid of the peer that's making the revocation
- * request. If it is null, this request was made locally, without external
- * pressure to give up the permit. This most often occurs when a client
- * starts up.
- *
- * FIXME: this function needs to be refactored slightly once we start handling
- * multiple clients.
- */
-int izo_revoke_permit(struct dentry *dentry, __u8 uuid[16])
-{
- struct presto_file_set *fset;
- DECLARE_WAITQUEUE(wait, current);
- int minor, rc;
-
- ENTRY;
-
- minor = presto_i2m(dentry->d_inode);
- if (minor < 0) {
- EXIT;
- return -ENODEV;
- }
-
- fset = presto_fset(dentry);
- if (fset == NULL) {
- EXIT;
- return -ENODEV;
- }
-
- spin_lock(&fset->fset_permit_lock);
- if (fset->fset_flags & FSET_PERMIT_WAITING) {
- CERROR("InterMezzo: Two processes are waiting on the same permit--this not yet supported! Aborting this particular permit request...\n");
- EXIT;
- spin_unlock(&fset->fset_permit_lock);
- return -EINVAL;
- }
-
- if (fset->fset_permit_count == 0)
- goto got_permit;
-
- /* Something is still using this permit. Mark that we're waiting for it
- * and go to sleep. */
- rc = izo_mark_fset(dentry, ~0, FSET_PERMIT_WAITING, NULL);
- spin_unlock(&fset->fset_permit_lock);
- if (rc < 0) {
- EXIT;
- return rc;
- }
-
- add_wait_queue(&fset->fset_permit_queue, &wait);
- while (1) {
- set_current_state(TASK_INTERRUPTIBLE);
-
- spin_lock(&fset->fset_permit_lock);
- if (fset->fset_permit_count == 0)
- break;
- spin_unlock(&fset->fset_permit_lock);
-
- if (signal_pending(current)) {
- /* FIXME: there must be a better thing to return... */
- remove_wait_queue(&fset->fset_permit_queue, &wait);
- EXIT;
- return -ERESTARTSYS;
- }
-
- /* FIXME: maybe there should be a timeout here. */
-
- schedule();
- }
-
- remove_wait_queue(&fset->fset_permit_queue, &wait);
- got_permit:
- /* By this point fset->fset_permit_count is zero and we're holding the
- * lock. */
- CDEBUG(D_CACHE, "InterMezzo: releasing permit inode %ld\n",
- dentry->d_inode->i_ino);
-
- if (uuid != NULL) {
- rc = izo_upc_revoke_permit(minor, fset->fset_name, uuid);
- if (rc < 0) {
- spin_unlock(&fset->fset_permit_lock);
- EXIT;
- return rc;
- }
- }
-
- izo_mark_fset(fset->fset_dentry, ~FSET_PERMIT_WAITING, 0, NULL);
- izo_mark_fset(fset->fset_dentry, ~FSET_HASPERMIT, 0, NULL);
- spin_unlock(&fset->fset_permit_lock);
- EXIT;
- return 0;
-}
-
-inline int presto_is_read_only(struct presto_file_set * fset)
-{
- int minor, mask;
- struct presto_cache *cache = fset->fset_cache;
-
- minor= cache->cache_psdev->uc_minor;
- mask= (ISLENTO(minor)? FSET_LENTO_RO : FSET_CLIENT_RO);
- if ( fset->fset_flags & mask )
- return 1;
- mask= (ISLENTO(minor)? CACHE_LENTO_RO : CACHE_CLIENT_RO);
- return ((cache->cache_flags & mask)? 1 : 0);
-}
+++ /dev/null
-/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
- * vim:expandtab:shiftwidth=8:tabstop=8:
- *
- * An implementation of a loadable kernel mode driver providing
- * multiple kernel/user space bidirectional communications links.
- *
- * Author: Alan Cox <alan@cymru.net>
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * version 2 as published by the Free Software Foundation.
- *
- * Adapted to become the Linux 2.0 Coda pseudo device
- * Peter Braam <braam@maths.ox.ac.uk>
- * Michael Callahan <mjc@emmy.smith.edu>
- *
- * Changes for Linux 2.1
- * Copyright (c) 1997 Carnegie-Mellon University
- *
- * Redone again for InterMezzo
- * Copyright (c) 1998 Peter J. Braam
- * Copyright (c) 2000 Mountain View Data, Inc.
- * Copyright (c) 2000 Tacitus Systems, Inc.
- * Copyright (c) 2001 Cluster File Systems, Inc.
- *
- */
-
-#include <linux/module.h>
-#include <linux/errno.h>
-#include <linux/kernel.h>
-#include <linux/major.h>
-#include <linux/sched.h>
-#include <linux/lp.h>
-#include <linux/slab.h>
-#include <linux/ioport.h>
-#include <linux/fcntl.h>
-#include <linux/delay.h>
-#include <linux/skbuff.h>
-#include <linux/proc_fs.h>
-#include <linux/vmalloc.h>
-#include <linux/fs.h>
-#include <linux/file.h>
-#include <linux/poll.h>
-#include <linux/init.h>
-#include <linux/list.h>
-#include <linux/devfs_fs_kernel.h>
-#include <asm/io.h>
-#include <asm/segment.h>
-#include <asm/system.h>
-#include <asm/poll.h>
-#include <asm/uaccess.h>
-#include <linux/miscdevice.h>
-
-#include "intermezzo_fs.h"
-#include "intermezzo_psdev.h"
-
-
-#ifdef PRESTO_DEVEL
-int presto_print_entry = 1;
-int presto_debug = 4095;
-#else
-int presto_print_entry = 0;
-int presto_debug = 0;
-#endif
-
-/* Like inode.c (presto_sym_iops), the initializer is just to prevent
- izo_channels from appearing as a COMMON symbol (and therefore
- interfering with other modules that use the same variable name). */
-struct upc_channel izo_channels[MAX_CHANNEL] = {{0}};
-
-int izo_psdev_get_free_channel(void)
-{
- int i, result = -1;
-
- for (i = 0 ; i < MAX_CHANNEL ; i++ ) {
- if (list_empty(&(izo_channels[i].uc_cache_list))) {
- result = i;
- break;
- }
- }
- return result;
-}
-
-
-int izo_psdev_setpid(int minor)
-{
- struct upc_channel *channel;
- if (minor < 0 || minor >= MAX_CHANNEL) {
- return -EINVAL;
- }
-
- channel = &(izo_channels[minor]);
- /*
- * This ioctl is performed by each Lento that starts up
- * and wants to do further communication with presto.
- */
- CDEBUG(D_PSDEV, "Setting current pid to %d channel %d\n",
- current->pid, minor);
- channel->uc_pid = current->pid;
- spin_lock(&channel->uc_lock);
- if ( !list_empty(&channel->uc_processing) ) {
- struct list_head *lh;
- struct upc_req *req;
- CERROR("WARNING: setpid & processing not empty!\n");
- list_for_each(lh, &channel->uc_processing) {
- req = list_entry(lh, struct upc_req, rq_chain);
- /* freeing of req and data is done by the sleeper */
- wake_up(&req->rq_sleep);
- }
- }
- if ( !list_empty(&channel->uc_processing) ) {
- CERROR("BAD: FAILDED TO CLEAN PROCESSING LIST!\n");
- }
- spin_unlock(&channel->uc_lock);
- EXIT;
- return 0;
-}
-
-int izo_psdev_setchannel(struct file *file, int fd)
-{
-
- struct file *psdev_file = fget(fd);
- struct presto_cache *cache = presto_get_cache(file->f_dentry->d_inode);
-
- if (!psdev_file) {
- CERROR("%s: no psdev_file!\n", __FUNCTION__);
- return -EINVAL;
- }
-
- if (!cache) {
- CERROR("%s: no cache!\n", __FUNCTION__);
- fput(psdev_file);
- return -EINVAL;
- }
-
- if (psdev_file->private_data) {
- CERROR("%s: channel already set!\n", __FUNCTION__);
- fput(psdev_file);
- return -EINVAL;
- }
-
- psdev_file->private_data = cache->cache_psdev;
- fput(psdev_file);
- EXIT;
- return 0;
-}
-
-inline int presto_lento_up(int minor)
-{
- return izo_channels[minor].uc_pid;
-}
-
-static unsigned int presto_psdev_poll(struct file *file, poll_table * wait)
- {
- struct upc_channel *channel = (struct upc_channel *)file->private_data;
- unsigned int mask = POLLOUT | POLLWRNORM;
-
- /* ENTRY; this will flood you */
- if ( ! channel ) {
- CERROR("%s: bad psdev file\n", __FUNCTION__);
- return -EBADF;
- }
-
- poll_wait(file, &(channel->uc_waitq), wait);
-
- spin_lock(&channel->uc_lock);
- if (!list_empty(&channel->uc_pending)) {
- CDEBUG(D_PSDEV, "Non-empty pending list.\n");
- mask |= POLLIN | POLLRDNORM;
- }
- spin_unlock(&channel->uc_lock);
-
- /* EXIT; will flood you */
- return mask;
-}
-
-/*
- * Receive a message written by Lento to the psdev
- */
-static ssize_t presto_psdev_write(struct file *file, const char *buf,
- size_t count, loff_t *off)
-{
- struct upc_channel *channel = (struct upc_channel *)file->private_data;
- struct upc_req *req = NULL;
- struct upc_req *tmp;
- struct list_head *lh;
- struct izo_upcall_resp hdr;
- int error;
-
- if ( ! channel ) {
- CERROR("%s: bad psdev file\n", __FUNCTION__);
- return -EBADF;
- }
-
- /* Peek at the opcode, uniquefier */
- if ( count < sizeof(hdr) ) {
- CERROR("presto_psdev_write: Lento didn't write full hdr.\n");
- return -EINVAL;
- }
-
- error = copy_from_user(&hdr, buf, sizeof(hdr));
- if ( error )
- return -EFAULT;
-
- CDEBUG(D_PSDEV, "(process,opc,uniq)=(%d,%d,%d)\n",
- current->pid, hdr.opcode, hdr.unique);
-
- spin_lock(&channel->uc_lock);
- /* Look for the message on the processing queue. */
- list_for_each(lh, &channel->uc_processing) {
- tmp = list_entry(lh, struct upc_req , rq_chain);
- if (tmp->rq_unique == hdr.unique) {
- req = tmp;
- /* unlink here: keeps search length minimal */
- list_del_init(&req->rq_chain);
- CDEBUG(D_PSDEV,"Eureka opc %d uniq %d!\n",
- hdr.opcode, hdr.unique);
- break;
- }
- }
- spin_unlock(&channel->uc_lock);
- if (!req) {
- CERROR("psdev_write: msg (%d, %d) not found\n",
- hdr.opcode, hdr.unique);
- return(-ESRCH);
- }
-
- /* move data into response buffer. */
- if (req->rq_bufsize < count) {
- CERROR("psdev_write: too much cnt: %d, cnt: %Zd, "
- "opc: %d, uniq: %d.\n",
- req->rq_bufsize, count, hdr.opcode, hdr.unique);
- count = req->rq_bufsize; /* don't have more space! */
- }
- error = copy_from_user(req->rq_data, buf, count);
- if ( error )
- return -EFAULT;
-
- /* adjust outsize: good upcalls can be aware of this */
- req->rq_rep_size = count;
- req->rq_flags |= REQ_WRITE;
-
- wake_up(&req->rq_sleep);
- return(count);
-}
-
-/*
- * Read a message from the kernel to Lento
- */
-static ssize_t presto_psdev_read(struct file * file, char * buf,
- size_t count, loff_t *off)
-{
- struct upc_channel *channel = (struct upc_channel *)file->private_data;
- struct upc_req *req;
- int result = count;
-
- if ( ! channel ) {
- CERROR("%s: bad psdev file\n", __FUNCTION__);
- return -EBADF;
- }
-
- spin_lock(&channel->uc_lock);
- if (list_empty(&(channel->uc_pending))) {
- CDEBUG(D_UPCALL, "Empty pending list in read, not good\n");
- spin_unlock(&channel->uc_lock);
- return -EINVAL;
- }
- req = list_entry((channel->uc_pending.next), struct upc_req, rq_chain);
- list_del(&(req->rq_chain));
- if (! (req->rq_flags & REQ_ASYNC) ) {
- list_add(&(req->rq_chain), channel->uc_processing.prev);
- }
- spin_unlock(&channel->uc_lock);
-
- req->rq_flags |= REQ_READ;
-
- /* Move the input args into userspace */
- CDEBUG(D_PSDEV, "\n");
- if (req->rq_bufsize <= count) {
- result = req->rq_bufsize;
- }
-
- if (count < req->rq_bufsize) {
- CERROR ("psdev_read: buffer too small, read %Zd of %d bytes\n",
- count, req->rq_bufsize);
- }
-
- if ( copy_to_user(buf, req->rq_data, result) ) {
- BUG();
- return -EFAULT;
- }
-
- /* If request was asynchronous don't enqueue, but free */
- if (req->rq_flags & REQ_ASYNC) {
- CDEBUG(D_PSDEV, "psdev_read: async msg (%d, %d), result %d\n",
- req->rq_opcode, req->rq_unique, result);
- PRESTO_FREE(req->rq_data, req->rq_bufsize);
- PRESTO_FREE(req, sizeof(*req));
- return result;
- }
-
- return result;
-}
-
-
-static int presto_psdev_open(struct inode * inode, struct file * file)
-{
- ENTRY;
-
- file->private_data = NULL;
-
- CDEBUG(D_PSDEV, "Psdev_open: caller: %d, flags: %d\n", current->pid, file->f_flags);
-
- EXIT;
- return 0;
-}
-
-
-
-static int presto_psdev_release(struct inode * inode, struct file * file)
-{
- struct upc_channel *channel = (struct upc_channel *)file->private_data;
- struct upc_req *req;
- struct list_head *lh;
- ENTRY;
-
- if ( ! channel ) {
- CERROR("%s: bad psdev file\n", __FUNCTION__);
- return -EBADF;
- }
-
- CDEBUG(D_PSDEV, "Lento: pid %d\n", current->pid);
- channel->uc_pid = 0;
-
- /* Wake up clients so they can return. */
- CDEBUG(D_PSDEV, "Wake up clients sleeping for pending.\n");
- spin_lock(&channel->uc_lock);
- list_for_each(lh, &channel->uc_pending) {
- req = list_entry(lh, struct upc_req, rq_chain);
-
- /* Async requests stay around for a new lento */
- if (req->rq_flags & REQ_ASYNC) {
- continue;
- }
- /* the sleeper will free the req and data */
- req->rq_flags |= REQ_DEAD;
- wake_up(&req->rq_sleep);
- }
-
- CDEBUG(D_PSDEV, "Wake up clients sleeping for processing\n");
- list_for_each(lh, &channel->uc_processing) {
- req = list_entry(lh, struct upc_req, rq_chain);
- /* freeing of req and data is done by the sleeper */
- req->rq_flags |= REQ_DEAD;
- wake_up(&req->rq_sleep);
- }
- spin_unlock(&channel->uc_lock);
- CDEBUG(D_PSDEV, "Done.\n");
-
- EXIT;
- return 0;
-}
-
-static struct file_operations presto_psdev_fops = {
- .owner = THIS_MODULE,
- .read = presto_psdev_read,
- .write = presto_psdev_write,
- .poll = presto_psdev_poll,
- .open = presto_psdev_open,
- .release = presto_psdev_release
-};
-
-/* modules setup */
-static struct miscdevice intermezzo_psdev = {
- INTERMEZZO_MINOR,
- "intermezzo",
- &presto_psdev_fops
-};
-
-int presto_psdev_init(void)
-{
- int i;
- int err;
-
- if ( (err = misc_register(&intermezzo_psdev)) ) {
- CERROR("%s: cannot register %d err %d\n",
- __FUNCTION__, INTERMEZZO_MINOR, err);
- return -EIO;
- }
-
- memset(&izo_channels, 0, sizeof(izo_channels));
- for ( i = 0 ; i < MAX_CHANNEL ; i++ ) {
- struct upc_channel *channel = &(izo_channels[i]);
- INIT_LIST_HEAD(&channel->uc_pending);
- INIT_LIST_HEAD(&channel->uc_processing);
- INIT_LIST_HEAD(&channel->uc_cache_list);
- init_waitqueue_head(&channel->uc_waitq);
- channel->uc_lock = SPIN_LOCK_UNLOCKED;
- channel->uc_hard = 0;
- channel->uc_no_filter = 0;
- channel->uc_no_journal = 0;
- channel->uc_no_upcall = 0;
- channel->uc_timeout = 30;
- channel->uc_errorval = 0;
- channel->uc_minor = i;
- }
- return 0;
-}
-
-void presto_psdev_cleanup(void)
-{
- int i;
-
- misc_deregister(&intermezzo_psdev);
-
- for ( i = 0 ; i < MAX_CHANNEL ; i++ ) {
- struct upc_channel *channel = &(izo_channels[i]);
- struct list_head *lh, *next;
-
- spin_lock(&channel->uc_lock);
- if ( ! list_empty(&channel->uc_pending)) {
- CERROR("Weird, tell Peter: module cleanup and pending list not empty dev %d\n", i);
- }
- if ( ! list_empty(&channel->uc_processing)) {
- CERROR("Weird, tell Peter: module cleanup and processing list not empty dev %d\n", i);
- }
- if ( ! list_empty(&channel->uc_cache_list)) {
- CERROR("Weird, tell Peter: module cleanup and cache listnot empty dev %d\n", i);
- }
- list_for_each_safe(lh, next, &channel->uc_pending) {
- struct upc_req *req;
-
- req = list_entry(lh, struct upc_req, rq_chain);
- if ( req->rq_flags & REQ_ASYNC ) {
- list_del(&(req->rq_chain));
- CDEBUG(D_UPCALL, "free pending upcall type %d\n",
- req->rq_opcode);
- PRESTO_FREE(req->rq_data, req->rq_bufsize);
- PRESTO_FREE(req, sizeof(struct upc_req));
- } else {
- req->rq_flags |= REQ_DEAD;
- wake_up(&req->rq_sleep);
- }
- }
- list_for_each(lh, &channel->uc_processing) {
- struct upc_req *req;
- req = list_entry(lh, struct upc_req, rq_chain);
- list_del(&(req->rq_chain));
- req->rq_flags |= REQ_DEAD;
- wake_up(&req->rq_sleep);
- }
- spin_unlock(&channel->uc_lock);
- }
-}
-
-/*
- * lento_upcall and lento_downcall routines
- */
-static inline unsigned long lento_waitfor_upcall
- (struct upc_channel *channel, struct upc_req *req, int minor)
-{
- DECLARE_WAITQUEUE(wait, current);
- unsigned long posttime;
-
- req->rq_posttime = posttime = jiffies;
-
- add_wait_queue(&req->rq_sleep, &wait);
- for (;;) {
- if ( izo_channels[minor].uc_hard == 0 )
- set_current_state(TASK_INTERRUPTIBLE);
- else
- set_current_state(TASK_UNINTERRUPTIBLE);
-
- /* got a reply */
- if ( req->rq_flags & (REQ_WRITE | REQ_DEAD) )
- break;
-
- /* these cases only apply when TASK_INTERRUPTIBLE */
- if ( !izo_channels[minor].uc_hard && signal_pending(current) ) {
- /* if this process really wants to die, let it go */
- if (sigismember(&(current->pending.signal), SIGKILL)||
- sigismember(&(current->pending.signal), SIGINT) )
- break;
- /* signal is present: after timeout always return
- really smart idea, probably useless ... */
- if ( time_after(jiffies, req->rq_posttime +
- izo_channels[minor].uc_timeout * HZ) )
- break;
- }
- schedule();
- }
-
- spin_lock(&channel->uc_lock);
- list_del_init(&req->rq_chain);
- spin_unlock(&channel->uc_lock);
- remove_wait_queue(&req->rq_sleep, &wait);
- set_current_state(TASK_RUNNING);
-
- CDEBUG(D_SPECIAL, "posttime: %ld, returned: %ld\n",
- posttime, jiffies-posttime);
- return (jiffies - posttime);
-}
-
-/*
- * lento_upcall will return an error in the case of
- * failed communication with Lento _or_ will peek at Lento
- * reply and return Lento's error.
- *
- * As lento has 2 types of errors, normal errors (positive) and internal
- * errors (negative), normal errors are negated, while internal errors
- * are all mapped to -EINTR, while showing a nice warning message. (jh)
- *
- * lento_upcall will always free buffer, either directly, when an upcall
- * is read (in presto_psdev_read), when the filesystem is unmounted, or
- * when the module is unloaded.
- */
-int izo_upc_upcall(int minor, int *size, struct izo_upcall_hdr *buffer,
- int async)
-{
- unsigned long runtime;
- struct upc_channel *channel;
- struct izo_upcall_resp *out;
- struct upc_req *req;
- int error = 0;
-
- ENTRY;
- channel = &(izo_channels[minor]);
-
- if (channel->uc_no_upcall) {
- EXIT;
- goto exit_buf;
- }
- if (!channel->uc_pid && !async) {
- EXIT;
- error = -ENXIO;
- goto exit_buf;
- }
-
- /* Format the request message. */
- PRESTO_ALLOC(req, sizeof(struct upc_req));
- if ( !req ) {
- EXIT;
- error = -ENOMEM;
- goto exit_buf;
- }
- req->rq_data = (void *)buffer;
- req->rq_flags = 0;
- req->rq_bufsize = *size;
- req->rq_rep_size = 0;
- req->rq_opcode = buffer->u_opc;
- req->rq_unique = ++channel->uc_seq;
- init_waitqueue_head(&req->rq_sleep);
-
- /* Fill in the common input args. */
- buffer->u_uniq = req->rq_unique;
- buffer->u_async = async;
-
- /* Remove potential datarace possibility*/
- if ( async )
- req->rq_flags = REQ_ASYNC;
-
- spin_lock(&channel->uc_lock);
- /* Append msg to pending queue and poke Lento. */
- list_add(&req->rq_chain, channel->uc_pending.prev);
- spin_unlock(&channel->uc_lock);
- CDEBUG(D_UPCALL,
- "Proc %d waking Lento %d for(opc,uniq) =(%d,%d) msg at %p.\n",
- current->pid, channel->uc_pid, req->rq_opcode,
- req->rq_unique, req);
- wake_up_interruptible(&channel->uc_waitq);
-
- if ( async ) {
- /* req, rq_data are freed in presto_psdev_read for async */
- /* req->rq_flags = REQ_ASYNC;*/
- EXIT;
- return 0;
- }
-
- /* We can be interrupted while we wait for Lento to process
- * our request. If the interrupt occurs before Lento has read
- * the request, we dequeue and return. If it occurs after the
- * read but before the reply, we dequeue, send a signal
- * message, and return. If it occurs after the reply we ignore
- * it. In no case do we want to restart the syscall. If it
- * was interrupted by a lento shutdown (psdev_close), return
- * ENODEV. */
-
- /* Go to sleep. Wake up on signals only after the timeout. */
- runtime = lento_waitfor_upcall(channel, req, minor);
-
- CDEBUG(D_TIMING, "opc: %d time: %ld uniq: %d size: %d\n",
- req->rq_opcode, jiffies - req->rq_posttime,
- req->rq_unique, req->rq_rep_size);
- CDEBUG(D_UPCALL,
- "..process %d woken up by Lento for req at 0x%p, data at %p\n",
- current->pid, req, req->rq_data);
-
- if (channel->uc_pid) { /* i.e. Lento is still alive */
- /* Op went through, interrupt or not we go on */
- if (req->rq_flags & REQ_WRITE) {
- out = (struct izo_upcall_resp *)req->rq_data;
- /* here we map positive Lento errors to kernel errors */
- if ( out->result < 0 ) {
- CERROR("Tell Peter: Lento returns negative error %d, for oc %d!\n",
- out->result, out->opcode);
- out->result = EINVAL;
- }
- error = -out->result;
- CDEBUG(D_UPCALL, "upcall: (u,o,r) (%d, %d, %d) out at %p\n",
- out->unique, out->opcode, out->result, out);
- *size = req->rq_rep_size;
- EXIT;
- goto exit_req;
- }
- /* Interrupted before lento read it. */
- if ( !(req->rq_flags & REQ_READ) && signal_pending(current)) {
- CDEBUG(D_UPCALL,
- "Interrupt before read: (op,un)=(%d,%d), flags %x\n",
- req->rq_opcode, req->rq_unique, req->rq_flags);
- /* perhaps the best way to convince the app to give up? */
- error = -EINTR;
- EXIT;
- goto exit_req;
- }
-
- /* interrupted after Lento did its read, send signal */
- if ( (req->rq_flags & REQ_READ) && signal_pending(current) ) {
- CDEBUG(D_UPCALL,"Interrupt after read: op = %d.%d, flags = %x\n",
- req->rq_opcode, req->rq_unique, req->rq_flags);
-
- error = -EINTR;
- } else {
- CERROR("Lento: Strange interruption - tell Peter.\n");
- error = -EINTR;
- }
- } else { /* If lento died i.e. !UC_OPEN(channel) */
- CERROR("lento_upcall: Lento dead on (op,un) (%d.%d) flags %d\n",
- req->rq_opcode, req->rq_unique, req->rq_flags);
- error = -ENODEV;
- }
-
-exit_req:
- PRESTO_FREE(req, sizeof(struct upc_req));
-exit_buf:
- PRESTO_FREE(buffer,*size);
- return error;
-}
+++ /dev/null
-/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
- * vim:expandtab:shiftwidth=8:tabstop=8:
- *
- * Copyright (C) 2001 Cluster File Systems, Inc. <braam@clusterfs.com>
- * Copyright (C) 2001 Tacit Networks, Inc. <phil@off.net>
- *
- * This file is part of InterMezzo, http://www.inter-mezzo.org.
- *
- * InterMezzo is free software; you can redistribute it and/or
- * modify it under the terms of version 2 of the GNU General Public
- * License as published by the Free Software Foundation.
- *
- * InterMezzo is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with InterMezzo; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- *
- * Manage RCVD records for clients in the kernel
- *
- */
-
-#include <linux/module.h>
-#include <asm/uaccess.h>
-
-#include <linux/errno.h>
-#include <linux/fs.h>
-#include <linux/fsfilter.h>
-
-#include "intermezzo_fs.h"
-
-/*
- * this file contains a hash table of replicators/clients for a
- * fileset. It allows fast lookup and update of reintegration status
- */
-
-struct izo_offset_rec {
- struct list_head or_list;
- char or_uuid[16];
- loff_t or_offset;
-};
-
-#define RCACHE_BITS 8
-#define RCACHE_SIZE (1 << RCACHE_BITS)
-#define RCACHE_MASK (RCACHE_SIZE - 1)
-
-static struct list_head *
-izo_rep_cache(void)
-{
- int i;
- struct list_head *cache;
- PRESTO_ALLOC(cache, sizeof(struct list_head) * RCACHE_SIZE);
- if (cache == NULL) {
- CERROR("intermezzo-fatal: no memory for replicator cache\n");
- return NULL;
- }
- memset(cache, 0, sizeof(struct list_head) * RCACHE_SIZE);
- for (i = 0; i < RCACHE_SIZE; i++)
- INIT_LIST_HEAD(&cache[i]);
-
- return cache;
-}
-
-static struct list_head *
-izo_rep_hash(struct list_head *cache, char *uuid)
-{
- return &cache[(RCACHE_MASK & uuid[1])];
-}
-
-static void
-izo_rep_cache_clean(struct presto_file_set *fset)
-{
- int i;
- struct list_head *bucket;
- struct list_head *tmp;
-
- if (fset->fset_clients == NULL)
- return;
- for (i = 0; i < RCACHE_SIZE; i++) {
- tmp = bucket = &fset->fset_clients[i];
-
- tmp = tmp->next;
- while (tmp != bucket) {
- struct izo_offset_rec *offrec;
- tmp = tmp->next;
- list_del(tmp);
- offrec = list_entry(tmp, struct izo_offset_rec,
- or_list);
- PRESTO_FREE(offrec, sizeof(struct izo_offset_rec));
- }
- }
-}
-
-struct izo_offset_rec *
-izo_rep_cache_find(struct presto_file_set *fset, char *uuid)
-{
- struct list_head *tmp, *buck = izo_rep_hash(fset->fset_clients, uuid);
- struct izo_offset_rec *rec = NULL;
-
- list_for_each(tmp, buck) {
- rec = list_entry(tmp, struct izo_offset_rec, or_list);
- if ( memcmp(rec->or_uuid, uuid, sizeof(rec->or_uuid)) == 0 )
- return rec;
- }
-
- return NULL;
-}
-
-static int
-izo_rep_cache_add(struct presto_file_set *fset, struct izo_rcvd_rec *rec,
- loff_t offset)
-{
- struct izo_offset_rec *offrec;
-
- if (izo_rep_cache_find(fset, rec->lr_uuid)) {
- CERROR("izo: duplicate client entry %s off %Ld\n",
- fset->fset_name, offset);
- return -EINVAL;
- }
-
- PRESTO_ALLOC(offrec, sizeof(*offrec));
- if (offrec == NULL) {
- CERROR("izo: cannot allocate offrec\n");
- return -ENOMEM;
- }
-
- memcpy(offrec->or_uuid, rec->lr_uuid, sizeof(rec->lr_uuid));
- offrec->or_offset = offset;
-
- list_add(&offrec->or_list,
- izo_rep_hash(fset->fset_clients, rec->lr_uuid));
- return 0;
-}
-
-int
-izo_rep_cache_init(struct presto_file_set *fset)
-{
- struct izo_rcvd_rec rec;
- loff_t offset = 0, last_offset = 0;
-
- fset->fset_clients = izo_rep_cache();
- if (fset->fset_clients == NULL) {
- CERROR("Error initializing client cache\n");
- return -ENOMEM;
- }
-
- while ( presto_fread(fset->fset_rcvd.fd_file, (char *)&rec,
- sizeof(rec), &offset) == sizeof(rec) ) {
- int rc;
-
- if ((rc = izo_rep_cache_add(fset, &rec, last_offset)) < 0) {
- izo_rep_cache_clean(fset);
- return rc;
- }
-
- last_offset = offset;
- }
-
- return 0;
-}
-
-/*
- * Return local last_rcvd record for the client. Update or create
- * if necessary.
- *
- * XXX: After this call, any -EINVAL from izo_rcvd_get is a real error.
- */
-int
-izo_repstatus(struct presto_file_set *fset, __u64 client_kmlsize,
- struct izo_rcvd_rec *lr_client, struct izo_rcvd_rec *lr_server)
-{
- int rc;
- rc = izo_rcvd_get(lr_server, fset, lr_client->lr_uuid);
- if (rc < 0 && rc != -EINVAL) {
- return rc;
- }
-
- /* client is new or has been reset. */
- if (rc < 0 || (client_kmlsize == 0 && lr_client->lr_remote_offset == 0)) {
- memset(lr_server, 0, sizeof(*lr_server));
- memcpy(lr_server->lr_uuid, lr_client->lr_uuid, sizeof(lr_server->lr_uuid));
- rc = izo_rcvd_write(fset, lr_server);
- if (rc < 0)
- return rc;
- }
-
- /* update intersync */
- rc = izo_upc_repstatus(presto_f2m(fset), fset->fset_name, lr_server);
- return rc;
-}
-
-loff_t
-izo_rcvd_get(struct izo_rcvd_rec *rec, struct presto_file_set *fset, char *uuid)
-{
- struct izo_offset_rec *offrec;
- struct izo_rcvd_rec tmprec;
- loff_t offset;
-
- offrec = izo_rep_cache_find(fset, uuid);
- if (offrec == NULL) {
- CDEBUG(D_SPECIAL, "izo_get_rcvd: uuid not in hash.\n");
- return -EINVAL;
- }
- offset = offrec->or_offset;
-
- if (rec == NULL)
- return offset;
-
- if (presto_fread(fset->fset_rcvd.fd_file, (char *)&tmprec,
- sizeof(tmprec), &offset) != sizeof(tmprec)) {
- CERROR("izo_get_rcvd: Unable to read from last_rcvd file offset "
- "%Lu\n", offset);
- return -EIO;
- }
-
- memcpy(rec->lr_uuid, tmprec.lr_uuid, sizeof(tmprec.lr_uuid));
- rec->lr_remote_recno = le64_to_cpu(tmprec.lr_remote_recno);
- rec->lr_remote_offset = le64_to_cpu(tmprec.lr_remote_offset);
- rec->lr_local_recno = le64_to_cpu(tmprec.lr_local_recno);
- rec->lr_local_offset = le64_to_cpu(tmprec.lr_local_offset);
- rec->lr_last_ctime = le64_to_cpu(tmprec.lr_last_ctime);
-
- return offrec->or_offset;
-}
-
-/* Try to lookup the UUID in the hash. Insert it if it isn't found. Write the
- * data to the file.
- *
- * Returns the offset of the beginning of the record in the last_rcvd file. */
-loff_t
-izo_rcvd_write(struct presto_file_set *fset, struct izo_rcvd_rec *rec)
-{
- struct izo_offset_rec *offrec;
- loff_t offset, rc;
-
- ENTRY;
-
- offrec = izo_rep_cache_find(fset, rec->lr_uuid);
- if (offrec == NULL) {
- /* I don't think it should be possible for an entry to be not in
- * the hash table without also having an invalid offset, but we
- * handle it gracefully regardless. */
- write_lock(&fset->fset_rcvd.fd_lock);
- offset = fset->fset_rcvd.fd_offset;
- fset->fset_rcvd.fd_offset += sizeof(*rec);
- write_unlock(&fset->fset_rcvd.fd_lock);
-
- rc = izo_rep_cache_add(fset, rec, offset);
- if (rc < 0) {
- EXIT;
- return rc;
- }
- } else
- offset = offrec->or_offset;
-
-
- rc = presto_fwrite(fset->fset_rcvd.fd_file, (char *)rec, sizeof(*rec),
- &offset);
- if (rc == sizeof(*rec))
- /* presto_fwrite() advances 'offset' */
- rc = offset - sizeof(*rec);
-
- EXIT;
- return rc;
-}
-
-loff_t
-izo_rcvd_upd_remote(struct presto_file_set *fset, char * uuid, __u64 remote_recno,
- __u64 remote_offset)
-{
- struct izo_rcvd_rec rec;
-
- loff_t rc;
-
- ENTRY;
- rc = izo_rcvd_get(&rec, fset, uuid);
- if (rc < 0)
- return rc;
- rec.lr_remote_recno = remote_recno;
- rec.lr_remote_offset = remote_offset;
-
- rc = izo_rcvd_write(fset, &rec);
- EXIT;
- if (rc < 0)
- return rc;
- return 0;
-}
+++ /dev/null
-/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
- * vim:expandtab:shiftwidth=8:tabstop=8:
- *
- * Copyright (C) 1998 Peter J. Braam <braam@clusterfs.com>
- * Copyright (C) 2000 Stelias Computing, Inc.
- * Copyright (C) 2000 Red Hat, Inc.
- *
- * This file is part of InterMezzo, http://www.inter-mezzo.org.
- *
- * InterMezzo is free software; you can redistribute it and/or
- * modify it under the terms of version 2 of the GNU General Public
- * License as published by the Free Software Foundation.
- *
- * InterMezzo is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with InterMezzo; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- *
- * presto's super.c
- */
-
-static char rcsid[] __attribute ((unused)) = "$Id: super.c,v 1.4 2002/10/12 02:16:19 rread Exp $";
-#define INTERMEZZO_VERSION "$Revision: 1.4 $"
-
-#include <asm/bitops.h>
-#include <asm/uaccess.h>
-#include <asm/system.h>
-
-#include <linux/errno.h>
-#include <linux/fs.h>
-#include <linux/ext2_fs.h>
-#include <linux/slab.h>
-#include <linux/vmalloc.h>
-#include <linux/sched.h>
-#include <linux/stat.h>
-#include <linux/string.h>
-#include <linux/blkdev.h>
-#include <linux/init.h>
-#include <linux/devfs_fs_kernel.h>
-#include <linux/module.h>
-
-#include "intermezzo_fs.h"
-#include "intermezzo_psdev.h"
-
-#ifdef PRESTO_DEBUG
-long presto_vmemory = 0;
-long presto_kmemory = 0;
-#endif
-
-/* returns an allocated string, copied out from data if opt is found */
-static char *opt_read(const char *opt, char *data)
-{
- char *value;
- char *retval;
-
- CDEBUG(D_SUPER, "option: %s, data %s\n", opt, data);
- if ( strncmp(opt, data, strlen(opt)) )
- return NULL;
-
- if ( (value = strchr(data, '=')) == NULL )
- return NULL;
-
- value++;
- PRESTO_ALLOC(retval, strlen(value) + 1);
- if ( !retval ) {
- CERROR("InterMezzo: Out of memory!\n");
- return NULL;
- }
-
- strcpy(retval, value);
- CDEBUG(D_SUPER, "Assigned option: %s, value %s\n", opt, retval);
- return retval;
-}
-
-static void opt_store(char **dst, char *opt)
-{
- if (!dst)
- CERROR("intermezzo: store_opt, error dst == NULL\n");
-
- if (*dst)
- PRESTO_FREE(*dst, strlen(*dst) + 1);
- *dst = opt;
-}
-
-static void opt_set_default(char **dst, char *defval)
-{
- if (!dst)
- CERROR("intermezzo: store_opt, error dst == NULL\n");
-
- if (*dst)
- PRESTO_FREE(*dst, strlen(*dst) + 1);
- if (defval) {
- char *def_alloced;
- PRESTO_ALLOC(def_alloced, strlen(defval)+1);
- if (!def_alloced) {
- CERROR("InterMezzo: Out of memory!\n");
- return ;
- }
- strcpy(def_alloced, defval);
- *dst = def_alloced;
- }
-}
-
-
-/* Find the options for InterMezzo in "options", saving them into the
- * passed pointers. If the pointer is null, the option is discarded.
- * Copy out all non-InterMezzo options into cache_data (to be passed
- * to the read_super operation of the cache). The return value will
- * be a pointer to the end of the cache_data.
- */
-static char *presto_options(struct file_system_type *fstype,
- char *options, char *cache_data,
- char **cache_type, char **fileset,
- char **channel)
-{
- char *this_char;
- char *opt_ptr = options;
- char *cache_data_end = cache_data;
-
- /* set the defaults */
- if (strcmp(fstype->name, "intermezzo") == 0)
- opt_set_default(cache_type, "ext3");
- else
- opt_set_default(cache_type, "tmpfs");
-
- if (!options || !cache_data)
- return cache_data_end;
-
-
- CDEBUG(D_SUPER, "parsing options\n");
- while ((this_char = strsep (&opt_ptr, ",")) != NULL) {
- char *opt;
- if (!*this_char)
- continue;
- CDEBUG(D_SUPER, "this_char %s\n", this_char);
-
- if ( (opt = opt_read("fileset", this_char)) ) {
- opt_store(fileset, opt);
- continue;
- }
- if ( (opt = opt_read("cache_type", this_char)) ) {
- opt_store(cache_type, opt);
- continue;
- }
- if ( (opt = opt_read("channel", this_char)) ) {
- opt_store(channel, opt);
- continue;
- }
-
- cache_data_end +=
- sprintf(cache_data_end, "%s%s",
- cache_data_end != cache_data ? ",":"",
- this_char);
- }
-
- return cache_data_end;
-}
-
-static int presto_set_channel(struct presto_cache *cache, char *channel)
-{
- int minor;
-
- ENTRY;
- if (!channel) {
- minor = izo_psdev_get_free_channel();
- } else {
- minor = simple_strtoul(channel, NULL, 0);
- }
- if (minor < 0 || minor >= MAX_CHANNEL) {
- CERROR("all channels in use or channel too large %d\n",
- minor);
- return -EINVAL;
- }
-
- cache->cache_psdev = &(izo_channels[minor]);
- list_add(&cache->cache_channel_list,
- &cache->cache_psdev->uc_cache_list);
-
- EXIT;
- return minor;
-}
-
-/* We always need to remove the presto options before passing
- mount options to cache FS */
-struct super_block *
-presto_get_sb(struct file_system_type *izo_type, int flags,
- const char *devname, void *data)
-{
- struct file_system_type *fstype;
- struct presto_cache *cache = NULL;
- char *cache_data = NULL;
- char *cache_data_end;
- char *cache_type = NULL;
- char *fileset = NULL;
- char *channel = NULL;
- struct super_block *sb;
- int err;
- unsigned int minor;
-
- ENTRY;
-
- /* reserve space for the cache's data */
- PRESTO_ALLOC(cache_data, PAGE_SIZE);
- if ( !cache_data ) {
- CERROR("presto_read_super: Cannot allocate data page.\n");
- EXIT;
- goto out_err;
- }
-
- /* read and validate options */
- cache_data_end = presto_options(izo_type, data, cache_data, &cache_type,
- &fileset, &channel);
-
- /* was there anything for the cache filesystem in the data? */
- if (cache_data_end == cache_data) {
- PRESTO_FREE(cache_data, PAGE_SIZE);
- cache_data_end = cache_data = NULL;
- } else {
- CDEBUG(D_SUPER, "cache_data at %p is: %s\n", cache_data,
- cache_data);
- }
-
- /* set up the cache */
- cache = presto_cache_init();
- if ( !cache ) {
- CERROR("presto_read_super: failure allocating cache.\n");
- EXIT;
- goto out_err;
- }
- cache->cache_type = cache_type;
-
- /* link cache to channel */
- minor = presto_set_channel(cache, channel);
- if (minor < 0) {
- EXIT;
- goto out_err;
- }
-
- CDEBUG(D_SUPER, "Presto: type=%s, fset=%s, dev= %d, flags %x\n",
- cache_type, fileset?fileset:"NULL", minor, cache->cache_flags);
-
- /* get the filter for the cache */
- fstype = get_fs_type(cache_type);
- cache->cache_filter = filter_get_filter_fs((const char *)cache_type);
- if ( !fstype || !cache->cache_filter) {
- CERROR("Presto: unrecognized fs type or cache type\n");
- EXIT;
- goto out_err;
- }
-
- sb = fstype->get_sb(fstype, flags, devname, cache_data);
-
- if ( !sb || IS_ERR(sb)) {
- CERROR("InterMezzo: cache mount failure.\n");
- EXIT;
- goto out_err;
- }
-
- /* can we in fact mount the cache */
- if (sb->s_bdev && (strcmp(fstype->name, "vintermezzo") == 0)) {
- CERROR("vintermezzo must not be used with a block device\n");
- EXIT;
- goto out_err;
- }
-
- /* this might have been freed above */
- if (cache_data) {
- PRESTO_FREE(cache_data, PAGE_SIZE);
- cache_data = NULL;
- }
-
- cache->cache_sb = sb;
- cache->cache_root = dget(sb->s_root);
-
- /* we now know the dev of the cache: hash the cache */
- presto_cache_add(cache);
- err = izo_prepare_fileset(sb->s_root, fileset);
-
- filter_setup_journal_ops(cache->cache_filter, cache->cache_type);
-
- /* make sure we have our own super operations: sb
- still contains the cache operations */
- filter_setup_super_ops(cache->cache_filter, sb->s_op,
- &presto_super_ops);
- sb->s_op = filter_c2usops(cache->cache_filter);
-
- /* get izo directory operations: sb->s_root->d_inode exists now */
- filter_setup_dir_ops(cache->cache_filter, sb->s_root->d_inode,
- &presto_dir_iops, &presto_dir_fops);
- filter_setup_dentry_ops(cache->cache_filter, sb->s_root->d_op,
- &presto_dentry_ops);
- sb->s_root->d_inode->i_op = filter_c2udiops(cache->cache_filter);
- sb->s_root->d_inode->i_fop = filter_c2udfops(cache->cache_filter);
- sb->s_root->d_op = filter_c2udops(cache->cache_filter);
-
- EXIT;
- return sb;
-
- out_err:
- CDEBUG(D_SUPER, "out_err called\n");
- if (cache)
- PRESTO_FREE(cache, sizeof(struct presto_cache));
- if (cache_data)
- PRESTO_FREE(cache_data, PAGE_SIZE);
- if (fileset)
- PRESTO_FREE(fileset, strlen(fileset) + 1);
- if (channel)
- PRESTO_FREE(channel, strlen(channel) + 1);
- if (cache_type)
- PRESTO_FREE(cache_type, strlen(cache_type) + 1);
-
- CDEBUG(D_MALLOC, "mount error exit: kmem %ld, vmem %ld\n",
- presto_kmemory, presto_vmemory);
- return ERR_PTR(-EINVAL);
-}
-
-
-
-
-#ifdef PRESTO_DEVEL
-static DECLARE_FSTYPE(presto_fs_type, "izo", presto_read_super, FS_REQUIRES_DEV);
-static DECLARE_FSTYPE(vpresto_fs_type, "vintermezzo", presto_read_super, FS_LITTER);
-#else
-static struct file_system_type vpresto_fs_type = {
- .owner = THIS_MODULE,
- .name = "vintermezzo",
- .get_sb = presto_get_sb,
- .kill_sb = kill_litter_super,
-};
-static struct file_system_type presto_fs_type = {
- .owner = THIS_MODULE,
- .name = "intermezzo",
- .get_sb = presto_get_sb,
- .kill_sb = kill_block_super,
- .fs_flags = FS_REQUIRES_DEV,
-};
-#endif
-
-
-
-int __init init_intermezzo_fs(void)
-{
- int status;
-
- printk(KERN_INFO "InterMezzo Kernel/Intersync communications " INTERMEZZO_VERSION
- " info@clusterfs.com\n");
-
- status = presto_psdev_init();
- if ( status ) {
- CERROR("Problem (%d) in init_intermezzo_psdev\n", status);
- return status;
- }
-
- status = init_intermezzo_sysctl();
- if (status) {
- CERROR("presto: failed in init_intermezzo_sysctl!\n");
- }
-
- presto_cache_init_hash();
-
- if (!presto_init_ddata_cache()) {
- CERROR("presto out of memory!\n");
- return -ENOMEM;
- }
-
- status = register_filesystem(&presto_fs_type);
- if (status) {
- CERROR("presto: failed in register_filesystem!\n");
- }
- status = register_filesystem(&vpresto_fs_type);
- if (status) {
- CERROR("vpresto: failed in register_filesystem!\n");
- }
- return status;
-}
-
-void __exit exit_intermezzo_fs(void)
-{
- int err;
-
- ENTRY;
-
- if ( (err = unregister_filesystem(&presto_fs_type)) != 0 ) {
- CERROR("presto: failed to unregister filesystem\n");
- }
- if ( (err = unregister_filesystem(&vpresto_fs_type)) != 0 ) {
- CERROR("vpresto: failed to unregister filesystem\n");
- }
-
- presto_psdev_cleanup();
- cleanup_intermezzo_sysctl();
- presto_cleanup_ddata_cache();
- CERROR("after cleanup: kmem %ld, vmem %ld\n",
- presto_kmemory, presto_vmemory);
-}
-
-
-MODULE_AUTHOR("Cluster Filesystems Inc. <info@clusterfs.com>");
-MODULE_DESCRIPTION("InterMezzo Kernel/Intersync communications " INTERMEZZO_VERSION);
-MODULE_LICENSE("GPL");
-
-module_init(init_intermezzo_fs)
-module_exit(exit_intermezzo_fs)
+++ /dev/null
-/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
- * vim:expandtab:shiftwidth=8:tabstop=8:
- *
- * Copyright (C) 1999 Peter J. Braam <braam@clusterfs.com>
- *
- * This file is part of InterMezzo, http://www.inter-mezzo.org.
- *
- * InterMezzo is free software; you can redistribute it and/or
- * modify it under the terms of version 2 of the GNU General Public
- * License as published by the Free Software Foundation.
- *
- * InterMezzo is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with InterMezzo; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- *
- * Sysctrl entries for Intermezzo!
- */
-
-#include <linux/config.h> /* for CONFIG_PROC_FS */
-#include <linux/module.h>
-#include <linux/sched.h>
-#include <linux/mm.h>
-#include <linux/sysctl.h>
-#include <linux/proc_fs.h>
-#include <linux/slab.h>
-#include <linux/vmalloc.h>
-#include <linux/stat.h>
-#include <linux/ctype.h>
-#include <linux/init.h>
-#include <asm/bitops.h>
-#include <asm/segment.h>
-#include <asm/uaccess.h>
-#include <linux/utsname.h>
-
-#include "intermezzo_fs.h"
-#include "intermezzo_psdev.h"
-
-/* /proc entries */
-
-#ifdef CONFIG_PROC_FS
-struct proc_dir_entry *proc_fs_intermezzo;
-int intermezzo_mount_get_info( char * buffer, char ** start, off_t offset,
- int length)
-{
- int len=0;
-
- /* this works as long as we are below 1024 characters! */
- *start = buffer + offset;
- len -= offset;
-
- if ( len < 0 )
- return -EINVAL;
-
- return len;
-}
-
-#endif
-
-
-/* SYSCTL below */
-
-static struct ctl_table_header *intermezzo_table_header = NULL;
-/* 0x100 to avoid any chance of collisions at any point in the tree with
- * non-directories
- */
-#define PSDEV_INTERMEZZO (0x100)
-
-#define PSDEV_DEBUG 1 /* control debugging */
-#define PSDEV_TRACE 2 /* control enter/leave pattern */
-#define PSDEV_TIMEOUT 3 /* timeout on upcalls to become intrble */
-#define PSDEV_HARD 4 /* mount type "hard" or "soft" */
-#define PSDEV_NO_FILTER 5 /* controls presto_chk */
-#define PSDEV_NO_JOURNAL 6 /* controls presto_chk */
-#define PSDEV_NO_UPCALL 7 /* controls lento_upcall */
-#define PSDEV_ERRORVAL 8 /* controls presto_debug_fail_blkdev */
-#define PSDEV_EXCL_GID 9 /* which GID is ignored by presto */
-#define PSDEV_BYTES_TO_CLOSE 11 /* bytes to write before close */
-
-/* These are global presto control options */
-#define PRESTO_PRIMARY_CTLCNT 2
-static struct ctl_table presto_table[ PRESTO_PRIMARY_CTLCNT + MAX_CHANNEL + 1] =
-{
- {PSDEV_DEBUG, "debug", &presto_debug, sizeof(int), 0644, NULL, &proc_dointvec},
- {PSDEV_TRACE, "trace", &presto_print_entry, sizeof(int), 0644, NULL, &proc_dointvec},
-};
-
-/*
- * Intalling the sysctl entries: strategy
- * - have templates for each /proc/sys/intermezzo/ entry
- * such an entry exists for each /dev/presto
- * (proto_channel_entry)
- * - have a template for the contents of such directories
- * (proto_psdev_table)
- * - have the master table (presto_table)
- *
- * When installing, malloc, memcpy and fix up the pointers to point to
- * the appropriate constants in izo_channels[your_minor]
- */
-
-static ctl_table proto_psdev_table[] = {
- {PSDEV_HARD, "hard", 0, sizeof(int), 0644, NULL, &proc_dointvec},
- {PSDEV_NO_FILTER, "no_filter", 0, sizeof(int), 0644, NULL, &proc_dointvec},
- {PSDEV_NO_JOURNAL, "no_journal", NULL, sizeof(int), 0644, NULL, &proc_dointvec},
- {PSDEV_NO_UPCALL, "no_upcall", NULL, sizeof(int), 0644, NULL, &proc_dointvec},
- {PSDEV_TIMEOUT, "timeout", NULL, sizeof(int), 0644, NULL, &proc_dointvec},
-#ifdef PRESTO_DEBUG
- {PSDEV_ERRORVAL, "errorval", NULL, sizeof(int), 0644, NULL, &proc_dointvec},
-#endif
- { 0 }
-};
-
-static ctl_table proto_channel_entry = {
- PSDEV_INTERMEZZO, 0, NULL, 0, 0555, 0,
-};
-
-static ctl_table intermezzo_table[2] = {
- {PSDEV_INTERMEZZO, "intermezzo", NULL, 0, 0555, presto_table},
- {0}
-};
-
-/* support for external setting and getting of opts. */
-/* particularly via ioctl. The Right way to do this is via sysctl,
- * but that will have to wait until intermezzo gets its own nice set of
- * sysctl IDs
- */
-/* we made these separate as setting may in future be more restricted
- * than getting
- */
-#ifdef RON_MINNICH
-int dosetopt(int minor, struct psdev_opt *opt)
-{
- int retval = 0;
- int newval = opt->optval;
-
- ENTRY;
-
- switch(opt->optname) {
-
- case PSDEV_TIMEOUT:
- izo_channels[minor].uc_timeout = newval;
- break;
-
- case PSDEV_HARD:
- izo_channels[minor].uc_hard = newval;
- break;
-
- case PSDEV_NO_FILTER:
- izo_channels[minor].uc_no_filter = newval;
- break;
-
- case PSDEV_NO_JOURNAL:
- izo_channels[minor].uc_no_journal = newval;
- break;
-
- case PSDEV_NO_UPCALL:
- izo_channels[minor].uc_no_upcall = newval;
- break;
-
-#ifdef PRESTO_DEBUG
- case PSDEV_ERRORVAL: {
- /* If we have a positive arg, set a breakpoint for that
- * value. If we have a negative arg, make that device
- * read-only. FIXME It would be much better to only
- * allow setting the underlying device read-only for the
- * current presto cache.
- */
- int errorval = izo_channels[minor].uc_errorval;
- if (errorval < 0) {
- if (newval == 0)
- set_device_ro(-errorval, 0);
- else
- CERROR("device %s already read only\n",
- kdevname(-errorval));
- } else {
- if (newval < 0)
- set_device_ro(-newval, 1);
- izo_channels[minor].uc_errorval = newval;
- CDEBUG(D_PSDEV, "setting errorval to %d\n", newval);
- }
-
- break;
- }
-#endif
-
- case PSDEV_TRACE:
- case PSDEV_DEBUG:
- case PSDEV_BYTES_TO_CLOSE:
- default:
- CDEBUG(D_PSDEV,
- "ioctl: dosetopt: minor %d, bad optname 0x%x, \n",
- minor, opt->optname);
-
- retval = -EINVAL;
- }
-
- EXIT;
- return retval;
-}
-
-int dogetopt(int minor, struct psdev_opt *opt)
-{
- int retval = 0;
-
- ENTRY;
-
- switch(opt->optname) {
-
- case PSDEV_TIMEOUT:
- opt->optval = izo_channels[minor].uc_timeout;
- break;
-
- case PSDEV_HARD:
- opt->optval = izo_channels[minor].uc_hard;
- break;
-
- case PSDEV_NO_FILTER:
- opt->optval = izo_channels[minor].uc_no_filter;
- break;
-
- case PSDEV_NO_JOURNAL:
- opt->optval = izo_channels[minor].uc_no_journal;
- break;
-
- case PSDEV_NO_UPCALL:
- opt->optval = izo_channels[minor].uc_no_upcall;
- break;
-
-#ifdef PSDEV_DEBUG
- case PSDEV_ERRORVAL: {
- int errorval = izo_channels[minor].uc_errorval;
- if (errorval < 0 && is_read_only(-errorval))
- CERROR("device %s has been set read-only\n",
- kdevname(-errorval));
- opt->optval = izo_channels[minor].uc_errorval;
- break;
- }
-#endif
-
- case PSDEV_TRACE:
- case PSDEV_DEBUG:
- case PSDEV_BYTES_TO_CLOSE:
- default:
- CDEBUG(D_PSDEV,
- "ioctl: dogetopt: minor %d, bad optval 0x%x, \n",
- minor, opt->optname);
-
- retval = -EINVAL;
- }
-
- EXIT;
- return retval;
-}
-#endif
-
-
-/* allocate the tables for the presto devices. We need
- * sizeof(proto_channel_table)/sizeof(proto_channel_table[0])
- * entries for each dev
- */
-int /* __init */ init_intermezzo_sysctl(void)
-{
- int i;
- int total_dev = MAX_CHANNEL;
- int entries_per_dev = sizeof(proto_psdev_table) /
- sizeof(proto_psdev_table[0]);
- int total_entries = entries_per_dev * total_dev;
- ctl_table *dev_ctl_table;
-
- PRESTO_ALLOC(dev_ctl_table, sizeof(ctl_table) * total_entries);
-
- if (! dev_ctl_table) {
- CERROR("WARNING: presto couldn't allocate dev_ctl_table\n");
- EXIT;
- return -ENOMEM;
- }
-
- /* now fill in the entries ... we put the individual presto<x>
- * entries at the end of the table, and the per-presto stuff
- * starting at the front. We assume that the compiler makes
- * this code more efficient, but really, who cares ... it
- * happens once per reboot.
- */
- for(i = 0; i < total_dev; i++) {
- void *p;
-
- /* entry for this /proc/sys/intermezzo/intermezzo"i" */
- ctl_table *psdev = &presto_table[i + PRESTO_PRIMARY_CTLCNT];
- /* entries for the individual "files" in this "directory" */
- ctl_table *psdev_entries = &dev_ctl_table[i * entries_per_dev];
- /* init the psdev and psdev_entries with the prototypes */
- *psdev = proto_channel_entry;
- memcpy(psdev_entries, proto_psdev_table,
- sizeof(proto_psdev_table));
- /* now specialize them ... */
- /* the psdev has to point to psdev_entries, and fix the number */
- psdev->ctl_name = psdev->ctl_name + i + 1; /* sorry */
-
- PRESTO_ALLOC(p, PROCNAME_SIZE);
- psdev->procname = p;
- if (!psdev->procname) {
- PRESTO_FREE(dev_ctl_table,
- sizeof(ctl_table) * total_entries);
- return -ENOMEM;
- }
- sprintf((char *) psdev->procname, "intermezzo%d", i);
- /* hook presto into */
- psdev->child = psdev_entries;
-
- /* now for each psdev entry ... */
- psdev_entries[0].data = &(izo_channels[i].uc_hard);
- psdev_entries[1].data = &(izo_channels[i].uc_no_filter);
- psdev_entries[2].data = &(izo_channels[i].uc_no_journal);
- psdev_entries[3].data = &(izo_channels[i].uc_no_upcall);
- psdev_entries[4].data = &(izo_channels[i].uc_timeout);
-#ifdef PRESTO_DEBUG
- psdev_entries[5].data = &(izo_channels[i].uc_errorval);
-#endif
- }
-
-
-#ifdef CONFIG_SYSCTL
- if ( !intermezzo_table_header )
- intermezzo_table_header =
- register_sysctl_table(intermezzo_table, 0);
-#endif
-#ifdef CONFIG_PROC_FS
- proc_fs_intermezzo = proc_mkdir("intermezzo", proc_root_fs);
- proc_fs_intermezzo->owner = THIS_MODULE;
- create_proc_info_entry("mounts", 0, proc_fs_intermezzo,
- intermezzo_mount_get_info);
-#endif
- return 0;
-}
-
-void cleanup_intermezzo_sysctl(void)
-{
- int total_dev = MAX_CHANNEL;
- int entries_per_dev = sizeof(proto_psdev_table) /
- sizeof(proto_psdev_table[0]);
- int total_entries = entries_per_dev * total_dev;
- int i;
-
-#ifdef CONFIG_SYSCTL
- if ( intermezzo_table_header )
- unregister_sysctl_table(intermezzo_table_header);
- intermezzo_table_header = NULL;
-#endif
- for(i = 0; i < total_dev; i++) {
- /* entry for this /proc/sys/intermezzo/intermezzo"i" */
- ctl_table *psdev = &presto_table[i + PRESTO_PRIMARY_CTLCNT];
- PRESTO_FREE(psdev->procname, PROCNAME_SIZE);
- }
- /* presto_table[PRESTO_PRIMARY_CTLCNT].child points to the
- * dev_ctl_table previously allocated in init_intermezzo_psdev()
- */
- PRESTO_FREE(presto_table[PRESTO_PRIMARY_CTLCNT].child, sizeof(ctl_table) * total_entries);
-
-#ifdef CONFIG_PROC_FS
- remove_proc_entry("mounts", proc_fs_intermezzo);
- remove_proc_entry("intermezzo", proc_root_fs);
-#endif
-}
-
+++ /dev/null
-/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
- * vim:expandtab:shiftwidth=8:tabstop=8:
- *
- * Copyright (C) 2001, 2002 Cluster File Systems, Inc. <braam@clusterfs.com>
- * Copyright (C) 2001 Tacit Networks, Inc. <phil@off.net>
- *
- * This file is part of InterMezzo, http://www.inter-mezzo.org.
- *
- * InterMezzo is free software; you can redistribute it and/or
- * modify it under the terms of version 2 of the GNU General Public
- * License as published by the Free Software Foundation.
- *
- * InterMezzo is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with InterMezzo; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- *
- * Mostly platform independent upcall operations to a cache manager:
- * -- upcalls
- * -- upcall routines
- *
- */
-
-#include <asm/system.h>
-#include <asm/segment.h>
-#include <asm/signal.h>
-#include <linux/signal.h>
-
-#include <linux/types.h>
-#include <linux/kernel.h>
-#include <linux/mm.h>
-#include <linux/vmalloc.h>
-#include <linux/slab.h>
-#include <linux/sched.h>
-#include <linux/fs.h>
-#include <linux/stat.h>
-#include <linux/errno.h>
-#include <linux/string.h>
-#include <asm/uaccess.h>
-
-#include "intermezzo_lib.h"
-#include "intermezzo_fs.h"
-#include "intermezzo_psdev.h"
-
-#include "intermezzo_idl.h"
-
-/*
- At present:
- -- Asynchronous calls:
- - kml: give a "more" kml indication to userland
- - kml_truncate: initiate KML truncation
- - release_permit: kernel is done with permit
- -- Synchronous
- - open: fetch file
- - permit: get a permit
-
- Errors returned by user level code are positive
-
- */
-
-static struct izo_upcall_hdr *upc_pack(__u32 opcode, int pathlen, char *path,
- char *fsetname, int reclen, char *rec,
- int *size)
-{
- struct izo_upcall_hdr *hdr;
- char *ptr;
- ENTRY;
-
- *size = sizeof(struct izo_upcall_hdr);
- if ( fsetname ) {
- *size += round_strlen(fsetname);
- }
- if ( path ) {
- *size += round_strlen(path);
- }
- if ( rec ) {
- *size += size_round(reclen);
- }
- PRESTO_ALLOC(hdr, *size);
- if (!hdr) {
- CERROR("intermezzo upcall: out of memory (opc %d)\n", opcode);
- EXIT;
- return NULL;
- }
- memset(hdr, 0, *size);
-
- ptr = (char *)hdr + sizeof(*hdr);
-
- /* XXX do we need fsuid ? */
- hdr->u_len = *size;
- hdr->u_version = IZO_UPC_VERSION;
- hdr->u_opc = opcode;
- hdr->u_pid = current->pid;
- hdr->u_uid = current->fsuid;
-
- if (path) {
- /*XXX Robert: please review what len to pass in for
- NUL terminated strings */
- hdr->u_pathlen = strlen(path);
- LOGL0(path, hdr->u_pathlen, ptr);
- }
- if (fsetname) {
- hdr->u_fsetlen = strlen(fsetname);
- LOGL0(fsetname, strlen(fsetname), ptr);
- }
- if (rec) {
- hdr->u_reclen = reclen;
- LOGL(rec, reclen, ptr);
- }
-
- EXIT;
- return hdr;
-}
-
-/* the upcalls */
-int izo_upc_kml(int minor, __u64 offset, __u32 first_recno, __u64 length, __u32 last_recno, char *fsetname)
-{
- int size;
- int error;
- struct izo_upcall_hdr *hdr;
-
- ENTRY;
- if (!presto_lento_up(minor)) {
- EXIT;
- return 0;
- }
-
- hdr = upc_pack(IZO_UPC_KML, 0, NULL, fsetname, 0, NULL, &size);
- if (!hdr || IS_ERR(hdr)) {
- EXIT;
- return -PTR_ERR(hdr);
- }
-
- hdr->u_offset = offset;
- hdr->u_first_recno = first_recno;
- hdr->u_length = length;
- hdr->u_last_recno = last_recno;
-
- CDEBUG(D_UPCALL, "KML: fileset %s, offset %Lu, length %Lu, "
- "first %u, last %d; minor %d\n",
- fsetname,
- (unsigned long long) hdr->u_offset,
- (unsigned long long) hdr->u_length,
- hdr->u_first_recno,
- hdr->u_last_recno, minor);
-
- error = izo_upc_upcall(minor, &size, hdr, ASYNCHRONOUS);
-
- EXIT;
- return -error;
-}
-
-int izo_upc_kml_truncate(int minor, __u64 length, __u32 last_recno, char *fsetname)
-{
- int size;
- int error;
- struct izo_upcall_hdr *hdr;
-
- ENTRY;
- if (!presto_lento_up(minor)) {
- EXIT;
- return 0;
- }
-
- hdr = upc_pack(IZO_UPC_KML_TRUNC, 0, NULL, fsetname, 0, NULL, &size);
- if (!hdr || IS_ERR(hdr)) {
- EXIT;
- return -PTR_ERR(hdr);
- }
-
- hdr->u_length = length;
- hdr->u_last_recno = last_recno;
-
- CDEBUG(D_UPCALL, "KML TRUNCATE: fileset %s, length %Lu, "
- "last recno %d, minor %d\n",
- fsetname,
- (unsigned long long) hdr->u_length,
- hdr->u_last_recno, minor);
-
- error = izo_upc_upcall(minor, &size, hdr, ASYNCHRONOUS);
-
- EXIT;
- return error;
-}
-
-int izo_upc_open(int minor, __u32 pathlen, char *path, char *fsetname, struct lento_vfs_context *info)
-{
- int size;
- int error;
- struct izo_upcall_hdr *hdr;
- ENTRY;
-
- if (!presto_lento_up(minor)) {
- EXIT;
- return -EIO;
- }
-
- hdr = upc_pack(IZO_UPC_OPEN, pathlen, path, fsetname,
- sizeof(*info), (char*)info, &size);
- if (!hdr || IS_ERR(hdr)) {
- EXIT;
- return -PTR_ERR(hdr);
- }
-
- CDEBUG(D_UPCALL, "path %s\n", path);
-
- error = izo_upc_upcall(minor, &size, hdr, SYNCHRONOUS);
- if (error)
- CERROR("InterMezzo: %s: error %d\n", __FUNCTION__, error);
-
- EXIT;
- return -error;
-}
-
-int izo_upc_get_fileid(int minor, __u32 reclen, char *rec,
- __u32 pathlen, char *path, char *fsetname)
-{
- int size;
- int error;
- struct izo_upcall_hdr *hdr;
- ENTRY;
-
- if (!presto_lento_up(minor)) {
- EXIT;
- return -EIO;
- }
-
- hdr = upc_pack(IZO_UPC_GET_FILEID, pathlen, path, fsetname, reclen, rec, &size);
- if (!hdr || IS_ERR(hdr)) {
- EXIT;
- return -PTR_ERR(hdr);
- }
-
- CDEBUG(D_UPCALL, "path %s\n", path);
-
- error = izo_upc_upcall(minor, &size, hdr, SYNCHRONOUS);
- if (error)
- CERROR("InterMezzo: %s: error %d\n", __FUNCTION__, error);
-
- EXIT;
- return -error;
-}
-
-int izo_upc_backfetch(int minor, char *path, char *fsetname, struct lento_vfs_context *info)
-{
- int size;
- int error;
- struct izo_upcall_hdr *hdr;
- ENTRY;
-
- if (!presto_lento_up(minor)) {
- EXIT;
- return -EIO;
- }
-
- hdr = upc_pack(IZO_UPC_BACKFETCH, strlen(path), path, fsetname,
- sizeof(*info), (char *)info, &size);
- if (!hdr || IS_ERR(hdr)) {
- EXIT;
- return -PTR_ERR(hdr);
- }
-
- /* This is currently synchronous, kml_reint_record blocks */
- error = izo_upc_upcall(minor, &size, hdr, SYNCHRONOUS);
- if (error)
- CERROR("InterMezzo: %s: error %d\n", __FUNCTION__, error);
-
- EXIT;
- return -error;
-}
-
-int izo_upc_permit(int minor, struct dentry *dentry, __u32 pathlen, char *path,
- char *fsetname)
-{
- int size;
- int error;
- struct izo_upcall_hdr *hdr;
-
- ENTRY;
-
- hdr = upc_pack(IZO_UPC_PERMIT, pathlen, path, fsetname, 0, NULL, &size);
- if (!hdr || IS_ERR(hdr)) {
- EXIT;
- return -PTR_ERR(hdr);
- }
-
- CDEBUG(D_UPCALL, "Permit minor %d path %s\n", minor, path);
-
- error = izo_upc_upcall(minor, &size, hdr, SYNCHRONOUS);
-
- if (error == -EROFS) {
- int err;
- CERROR("InterMezzo: ERROR - requested permit for read-only "
- "fileset.\n Setting \"%s\" read-only!\n", path);
- err = izo_mark_cache(dentry, 0xFFFFFFFF, CACHE_CLIENT_RO, NULL);
- if (err)
- CERROR("InterMezzo ERROR: mark_cache %d\n", err);
- } else if (error) {
- CERROR("InterMezzo: %s: error %d\n", __FUNCTION__, error);
- }
-
- EXIT;
- return error;
-}
-
-/* This is a ping-pong upcall handled on the server when a client (uuid)
- * requests the permit for itself. */
-int izo_upc_revoke_permit(int minor, char *fsetname, __u8 uuid[16])
-{
- int size;
- int error;
- struct izo_upcall_hdr *hdr;
-
- ENTRY;
-
- hdr = upc_pack(IZO_UPC_REVOKE_PERMIT, 0, NULL, fsetname, 0, NULL, &size);
- if (!hdr || IS_ERR(hdr)) {
- EXIT;
- return -PTR_ERR(hdr);
- }
-
- memcpy(hdr->u_uuid, uuid, sizeof(hdr->u_uuid));
-
- error = izo_upc_upcall(minor, &size, hdr, SYNCHRONOUS);
-
- if (error)
- CERROR("InterMezzo: %s: error %d\n", __FUNCTION__, error);
-
- EXIT;
- return -error;
-}
-
-int izo_upc_go_fetch_kml(int minor, char *fsetname, __u8 uuid[16],
- __u64 kmlsize)
-{
- int size;
- int error;
- struct izo_upcall_hdr *hdr;
- ENTRY;
-
- if (!presto_lento_up(minor)) {
- EXIT;
- return -EIO;
- }
-
- hdr = upc_pack(IZO_UPC_GO_FETCH_KML, 0, NULL, fsetname, 0, NULL, &size);
- if (!hdr || IS_ERR(hdr)) {
- EXIT;
- return -PTR_ERR(hdr);
- }
-
- hdr->u_offset = kmlsize;
- memcpy(hdr->u_uuid, uuid, sizeof(hdr->u_uuid));
-
- error = izo_upc_upcall(minor, &size, hdr, ASYNCHRONOUS);
- if (error)
- CERROR("%s: error %d\n", __FUNCTION__, error);
-
- EXIT;
- return -error;
-}
-
-int izo_upc_connect(int minor, __u64 ip_address, __u64 port, __u8 uuid[16],
- int client_flag)
-{
- int size;
- int error;
- struct izo_upcall_hdr *hdr;
- ENTRY;
-
- if (!presto_lento_up(minor)) {
- EXIT;
- return -EIO;
- }
-
- hdr = upc_pack(IZO_UPC_CONNECT, 0, NULL, NULL, 0, NULL, &size);
- if (!hdr || IS_ERR(hdr)) {
- EXIT;
- return -PTR_ERR(hdr);
- }
-
- hdr->u_offset = ip_address;
- hdr->u_length = port;
- memcpy(hdr->u_uuid, uuid, sizeof(hdr->u_uuid));
- hdr->u_first_recno = client_flag;
-
- error = izo_upc_upcall(minor, &size, hdr, SYNCHRONOUS);
- if (error) {
- CERROR("%s: error %d\n", __FUNCTION__, error);
- }
-
- EXIT;
- return -error;
-}
-
-int izo_upc_set_kmlsize(int minor, char *fsetname, __u8 uuid[16], __u64 kmlsize)
-{
- int size;
- int error;
- struct izo_upcall_hdr *hdr;
- ENTRY;
-
- if (!presto_lento_up(minor)) {
- EXIT;
- return -EIO;
- }
-
- hdr = upc_pack(IZO_UPC_SET_KMLSIZE, 0, NULL, fsetname, 0, NULL, &size);
- if (!hdr || IS_ERR(hdr)) {
- EXIT;
- return -PTR_ERR(hdr);
- }
-
- memcpy(hdr->u_uuid, uuid, sizeof(hdr->u_uuid));
- hdr->u_length = kmlsize;
-
- error = izo_upc_upcall(minor, &size, hdr, SYNCHRONOUS);
- if (error)
- CERROR("%s: error %d\n", __FUNCTION__, error);
-
- EXIT;
- return -error;
-}
-
-int izo_upc_repstatus(int minor, char * fsetname, struct izo_rcvd_rec *lr_server)
-{
- int size;
- int error;
- struct izo_upcall_hdr *hdr;
- ENTRY;
-
- if (!presto_lento_up(minor)) {
- EXIT;
- return -EIO;
- }
-
- hdr = upc_pack(IZO_UPC_REPSTATUS, 0, NULL, fsetname,
- sizeof(*lr_server), (char*)lr_server,
- &size);
- if (!hdr || IS_ERR(hdr)) {
- EXIT;
- return -PTR_ERR(hdr);
- }
-
- error = izo_upc_upcall(minor, &size, hdr, SYNCHRONOUS);
- if (error)
- CERROR("%s: error %d\n", __FUNCTION__, error);
-
- EXIT;
- return -error;
-}
-
-
-#if 0
-int izo_upc_client_make_branch(int minor, char *fsetname, char *tagname,
- char *branchname)
-{
- int size, error;
- struct izo_upcall_hdr *hdr;
- int pathlen;
- char *path;
- ENTRY;
-
- hdr = upc_pack(IZO_UPC_CLIENT_MAKE_BRANCH, strlen(tagname), tagname,
- fsetname, strlen(branchname) + 1, branchname, &size);
- if (!hdr || IS_ERR(hdr)) {
- error = -PTR_ERR(hdr);
- goto error;
- }
-
- error = izo_upc_upcall(minor, &size, hdr, SYNCHRONOUS);
- if (error)
- CERROR("InterMezzo: error %d\n", error);
-
- error:
- PRESTO_FREE(path, pathlen);
- EXIT;
- return error;
-}
-#endif
-
-int izo_upc_server_make_branch(int minor, char *fsetname)
-{
- int size, error;
- struct izo_upcall_hdr *hdr;
- ENTRY;
-
- hdr = upc_pack(IZO_UPC_SERVER_MAKE_BRANCH, 0, NULL, fsetname, 0, NULL, &size);
- if (!hdr || IS_ERR(hdr)) {
- error = -PTR_ERR(hdr);
- goto error;
- }
-
- error = izo_upc_upcall(minor, &size, hdr, SYNCHRONOUS);
- if (error)
- CERROR("InterMezzo: error %d\n", error);
-
- error:
- EXIT;
- return -error;
-}
-
-int izo_upc_branch_undo(int minor, char *fsetname, char *branchname)
-{
- int size;
- int error;
- struct izo_upcall_hdr *hdr;
- ENTRY;
-
- if (!presto_lento_up(minor)) {
- EXIT;
- return -EIO;
- }
-
- hdr = upc_pack(IZO_UPC_BRANCH_UNDO, strlen(branchname), branchname,
- fsetname, 0, NULL, &size);
- if (!hdr || IS_ERR(hdr)) {
- EXIT;
- return -PTR_ERR(hdr);
- }
-
- error = izo_upc_upcall(minor, &size, hdr, SYNCHRONOUS);
- if (error)
- CERROR("InterMezzo: %s: error %d\n", __FUNCTION__, error);
-
- EXIT;
- return -error;
-}
-
-int izo_upc_branch_redo(int minor, char *fsetname, char *branchname)
-{
- int size;
- int error;
- struct izo_upcall_hdr *hdr;
- ENTRY;
-
- if (!presto_lento_up(minor)) {
- EXIT;
- return -EIO;
- }
-
- hdr = upc_pack(IZO_UPC_BRANCH_REDO, strlen(branchname) + 1, branchname,
- fsetname, 0, NULL, &size);
- if (!hdr || IS_ERR(hdr)) {
- EXIT;
- return -PTR_ERR(hdr);
- }
-
- error = izo_upc_upcall(minor, &size, hdr, SYNCHRONOUS);
- if (error)
- CERROR("InterMezzo: %s: error %d\n", __FUNCTION__, error);
-
- EXIT;
- return -error;
-}
+++ /dev/null
-/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
- * vim:expandtab:shiftwidth=8:tabstop=8:
- *
- * Copyright (C) 2001, 2002 Cluster File Systems, Inc.
- * Copyright (C) 2000 Stelias Computing, Inc.
- * Copyright (C) 2000 Red Hat, Inc.
- *
- * This file is part of InterMezzo, http://www.inter-mezzo.org.
- *
- * InterMezzo is free software; you can redistribute it and/or
- * modify it under the terms of version 2 of the GNU General Public
- * License as published by the Free Software Foundation.
- *
- * InterMezzo is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with InterMezzo; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- *
- * vfs.c
- *
- * This file implements kernel downcalls from lento.
- *
- * Author: Rob Simmonds <simmonds@stelias.com>
- * Andreas Dilger <adilger@stelias.com>
- * Copyright (C) 2000 Stelias Computing Inc
- * Copyright (C) 2000 Red Hat Inc.
- *
- * Extended attribute support
- * Copyright (C) 2001 Shirish H. Phatak, Tacit Networks, Inc.
- *
- * This code is based on code from namei.c in the linux file system;
- * see copyright notice below.
- */
-
-/** namei.c copyright **/
-
-/*
- * linux/fs/namei.c
- *
- * Copyright (C) 1991, 1992 Linus Torvalds
- */
-/*
- * Some corrections by tytso.
- */
-
-/* [Feb 1997 T. Schoebel-Theuer] Complete rewrite of the pathname
- * lookup logic.
- */
-
-/** end of namei.c copyright **/
-
-#include <linux/mm.h>
-#include <linux/proc_fs.h>
-#include <linux/quotaops.h>
-
-#include <asm/uaccess.h>
-#include <asm/unaligned.h>
-#include <asm/semaphore.h>
-#include <asm/pgtable.h>
-
-#include <linux/file.h>
-#include <linux/fs.h>
-#include <linux/namei.h>
-#include <linux/genhd.h>
-
-#include "intermezzo_fs.h"
-#include "intermezzo_psdev.h"
-
-#ifdef CONFIG_FS_EXT_ATTR
-# include <linux/ext_attr.h>
-
-# if 0 /* was a broken check for Posix ACLs */
-# include <linux/posix_acl.h>
-# endif
-#endif
-
-extern struct inode_operations presto_sym_iops;
-
-/* Write the last_rcvd values to the last_rcvd file. We don't know what the
- * UUID or last_ctime values are, so we have to read from the file first
- * (sigh).
- * exported for branch_reinter in kml_reint.c*/
-int presto_write_last_rcvd(struct rec_info *recinfo,
- struct presto_file_set *fset,
- struct lento_vfs_context *info)
-{
- int rc;
- struct izo_rcvd_rec rcvd_rec;
-
- ENTRY;
-
- memset(&rcvd_rec, 0, sizeof(rcvd_rec));
- memcpy(rcvd_rec.lr_uuid, info->uuid, sizeof(rcvd_rec.lr_uuid));
- rcvd_rec.lr_remote_recno = HTON__u64(info->recno);
- rcvd_rec.lr_remote_offset = HTON__u64(info->kml_offset);
- rcvd_rec.lr_local_recno = HTON__u64(recinfo->recno);
- rcvd_rec.lr_local_offset = HTON__u64(recinfo->offset + recinfo->size);
-
- rc = izo_rcvd_write(fset, &rcvd_rec);
- if (rc < 0) {
- /* izo_rcvd_write returns negative errors and non-negative
- * offsets */
- CERROR("InterMezzo: izo_rcvd_write failed: %d\n", rc);
- EXIT;
- return rc;
- }
- EXIT;
- return 0;
-}
-
-/*
- * It's inline, so penalty for filesystems that don't use sticky bit is
- * minimal.
- */
-static inline int check_sticky(struct inode *dir, struct inode *inode)
-{
- if (!(dir->i_mode & S_ISVTX))
- return 0;
- if (inode->i_uid == current->fsuid)
- return 0;
- if (dir->i_uid == current->fsuid)
- return 0;
- return !capable(CAP_FOWNER);
-}
-
-/* from linux/fs/namei.c */
-static inline int may_delete(struct inode *dir,struct dentry *victim, int isdir)
-{
- int error;
- if (!victim->d_inode || victim->d_parent->d_inode != dir)
- return -ENOENT;
- error = permission(dir,MAY_WRITE | MAY_EXEC, NULL);
- if (error)
- return error;
- if (IS_APPEND(dir))
- return -EPERM;
- if (check_sticky(dir, victim->d_inode)||IS_APPEND(victim->d_inode)||
- IS_IMMUTABLE(victim->d_inode))
- return -EPERM;
- if (isdir) {
- if (!S_ISDIR(victim->d_inode->i_mode))
- return -ENOTDIR;
- if (IS_ROOT(victim))
- return -EBUSY;
- } else if (S_ISDIR(victim->d_inode->i_mode))
- return -EISDIR;
- return 0;
-}
-
-/* from linux/fs/namei.c */
-static inline int may_create(struct inode *dir, struct dentry *child) {
- if (child->d_inode)
- return -EEXIST;
- if (IS_DEADDIR(dir))
- return -ENOENT;
- return permission(dir,MAY_WRITE | MAY_EXEC, NULL);
-}
-
-#ifdef PRESTO_DEBUG
-/* The loop_discard_io() function is available via a kernel patch to the
- * loop block device. It "works" by accepting writes, but throwing them
- * away, rather than trying to write them to disk. The old method worked
- * by setting the underlying device read-only, but that has the problem
- * that dirty buffers are kept in memory, and ext3 didn't like that at all.
- */
-#ifdef CONFIG_LOOP_DISCARD
-#define BLKDEV_FAIL(dev,fail) loop_discard_io(dev,fail)
-#else
-#define BLKDEV_FAIL(dev,fail) set_device_ro(dev, 1)
-#endif
-
-/* If a breakpoint has been set via /proc/sys/intermezzo/intermezzoX/errorval,
- * that is the same as "value", the underlying device will "fail" now.
- */
-inline void presto_debug_fail_blkdev(struct presto_file_set *fset,
- unsigned long value)
-{
- int minor = presto_f2m(fset);
- int errorval = izo_channels[minor].uc_errorval;
- struct block_device *bdev = fset->fset_dentry->d_inode->i_sb->s_bdev;
- char b[BDEVNAME_SIZE];
-
- if (errorval && errorval == (long)value && !bdev_read_only(bdev)) {
- CDEBUG(D_SUPER, "setting device %s read only\n",
- bdevname(bdev, b));
- BLKDEV_FAIL(bdev, 1);
- izo_channels[minor].uc_errorval = -bdev->bd_dev;
- }
-}
-#else
-#define presto_debug_fail_blkdev(dev,value) do {} while (0)
-#endif
-
-
-static inline int presto_do_kml(struct lento_vfs_context *info,
- struct dentry *dentry)
-{
- if ( ! (info->flags & LENTO_FL_KML) )
- return 0;
- if ( presto_chk(dentry, PRESTO_DONT_JOURNAL) )
- return 0;
- return 1;
-}
-
-static inline int presto_do_rcvd(struct lento_vfs_context *info,
- struct dentry *dentry)
-{
- if ( ! (info->flags & LENTO_FL_EXPECT) )
- return 0;
- if ( presto_chk(dentry, PRESTO_DONT_JOURNAL) )
- return 0;
- return 1;
-}
-
-
-/* XXX fixme: this should not fail, all these dentries are in memory
- when _we_ call this */
-int presto_settime(struct presto_file_set *fset,
- struct dentry *newobj,
- struct dentry *parent,
- struct dentry *target,
- struct lento_vfs_context *ctx,
- int valid)
-{
- int error = 0;
- struct dentry *dentry;
- struct inode *inode;
- struct inode_operations *iops;
- struct iattr iattr;
-
- ENTRY;
- if (ctx->flags & LENTO_FL_IGNORE_TIME ) {
- EXIT;
- return 0;
- }
-
- iattr.ia_ctime = ctx->updated_time;
- iattr.ia_mtime = ctx->updated_time;
- iattr.ia_valid = valid;
-
- while (1) {
- if (parent && ctx->flags & LENTO_FL_TOUCH_PARENT) {
- dentry = parent;
- parent = NULL;
- } else if (newobj && ctx->flags & LENTO_FL_TOUCH_NEWOBJ) {
- dentry = newobj;
- newobj = NULL;
- } else if (target) {
- dentry = target;
- target = NULL;
- } else
- break;
-
- inode = dentry->d_inode;
-
- error = -EROFS;
- if (IS_RDONLY(inode)) {
- EXIT;
- return -EROFS;
- }
-
- if (IS_IMMUTABLE(inode) || IS_APPEND(inode)) {
- EXIT;
- return -EPERM;
- }
-
- error = -EPERM;
- iops = filter_c2cdiops(fset->fset_cache->cache_filter);
- if (!iops) {
- EXIT;
- return error;
- }
-
- if (iops->setattr != NULL)
- error = iops->setattr(dentry, &iattr);
- else {
- error = 0;
- inode_setattr(dentry->d_inode, &iattr);
- }
- }
- EXIT;
- return error;
-}
-
-void izo_get_rollback_data(struct inode *inode, struct izo_rollback_data *rb)
-{
- rb->rb_mode = (__u32)inode->i_mode;
- rb->rb_rdev = (__u32)old_encode_dev(inode->i_rdev);
- rb->rb_uid = (__u64)inode->i_uid;
- rb->rb_gid = (__u64)inode->i_gid;
-}
-
-
-int presto_do_close(struct presto_file_set *fset, struct file *file)
-{
- struct rec_info rec;
- int rc = -ENOSPC;
- void *handle;
- struct inode *inode = file->f_dentry->d_inode;
- struct presto_file_data *fdata =
- (struct presto_file_data *)file->private_data;
-
- ENTRY;
- presto_getversion(&fdata->fd_info.remote_version, inode);
-
- rc = presto_reserve_space(fset->fset_cache, PRESTO_REQHIGH);
- if (rc) {
- EXIT;
- return rc;
- }
-
- handle = presto_trans_start(fset, file->f_dentry->d_inode,
- KML_OPCODE_RELEASE);
- if ( IS_ERR(handle) ) {
- CERROR("presto_release: no space for transaction\n");
- return rc;
- }
-
- if (fdata->fd_info.flags & LENTO_FL_KML)
- rc = presto_journal_close(&rec, fset, fdata, file->f_dentry,
- &fdata->fd_version,
- &fdata->fd_info.remote_version);
- if (rc) {
- CERROR("presto_close: cannot journal close\n");
- goto out;
- }
-
- if (fdata->fd_info.flags & LENTO_FL_EXPECT)
- rc = presto_write_last_rcvd(&rec, fset, &fdata->fd_info);
-
- if (rc) {
- CERROR("presto_close: cannot journal last_rcvd\n");
- goto out;
- }
- presto_trans_commit(fset, handle);
-
- /* cancel the LML record */
- handle = presto_trans_start(fset, inode, KML_OPCODE_WRITE);
- if ( IS_ERR(handle) ) {
- CERROR("presto_release: no space for clear\n");
- return -ENOSPC;
- }
-
- rc = presto_clear_lml_close(fset, fdata->fd_lml_offset);
- if (rc < 0 ) {
- CERROR("presto_close: cannot journal close\n");
- goto out;
- }
- presto_truncate_lml(fset);
-
- out:
- presto_release_space(fset->fset_cache, PRESTO_REQHIGH);
- presto_trans_commit(fset, handle);
- EXIT;
- return rc;
-}
-
-int presto_do_setattr(struct presto_file_set *fset, struct dentry *dentry,
- struct iattr *iattr, struct lento_vfs_context *info)
-{
- struct rec_info rec;
- struct inode *inode = dentry->d_inode;
- struct inode_operations *iops;
- int error;
- struct presto_version old_ver, new_ver;
- struct izo_rollback_data rb;
- void *handle;
- loff_t old_size=inode->i_size;
-
- ENTRY;
- error = -EROFS;
- if (IS_RDONLY(inode)) {
- EXIT;
- return -EROFS;
- }
-
- if (IS_IMMUTABLE(inode) || IS_APPEND(inode)) {
- EXIT;
- return -EPERM;
- }
-
- presto_getversion(&old_ver, dentry->d_inode);
- izo_get_rollback_data(dentry->d_inode, &rb);
- error = -EPERM;
- iops = filter_c2cdiops(fset->fset_cache->cache_filter);
-
- error = presto_reserve_space(fset->fset_cache, 2*PRESTO_REQHIGH);
- if (error) {
- EXIT;
- return error;
- }
-
- if (iattr->ia_valid & ATTR_SIZE) {
- if (izo_mark_dentry(dentry, ~PRESTO_DATA, 0, NULL) != 0)
- CERROR("izo_mark_dentry(inode %ld, ~PRESTO_DATA) "
- "failed\n", dentry->d_inode->i_ino);
- handle = presto_trans_start(fset, dentry->d_inode,
- KML_OPCODE_TRUNC);
- } else {
- handle = presto_trans_start(fset, dentry->d_inode,
- KML_OPCODE_SETATTR);
- }
-
- if ( IS_ERR(handle) ) {
- CERROR("presto_do_setattr: no space for transaction\n");
- presto_release_space(fset->fset_cache, 2*PRESTO_REQHIGH);
- return -ENOSPC;
- }
-
- if (dentry->d_inode && iops && iops->setattr) {
- error = iops->setattr(dentry, iattr);
- } else {
- error = inode_change_ok(dentry->d_inode, iattr);
- if (!error)
- inode_setattr(inode, iattr);
- }
-
- if (!error && (iattr->ia_valid & ATTR_SIZE))
- vmtruncate(inode, iattr->ia_size);
-
- if (error) {
- EXIT;
- goto exit;
- }
-
- presto_debug_fail_blkdev(fset, KML_OPCODE_SETATTR | 0x10);
-
- if ( presto_do_kml(info, dentry) ) {
- if ((iattr->ia_valid & ATTR_SIZE) && (old_size != inode->i_size)) {
- /* Journal a close whenever we see a potential truncate
- * At the receiving end, lento should explicitly remove
- * ATTR_SIZE from the list of valid attributes */
- presto_getversion(&new_ver, inode);
- error = presto_journal_close(&rec, fset, NULL, dentry,
- &old_ver, &new_ver);
- }
-
- if (!error)
- error = presto_journal_setattr(&rec, fset, dentry,
- &old_ver, &rb, iattr);
- }
-
- presto_debug_fail_blkdev(fset, KML_OPCODE_SETATTR | 0x20);
- if ( presto_do_rcvd(info, dentry) )
- error = presto_write_last_rcvd(&rec, fset, info);
-
- presto_debug_fail_blkdev(fset, KML_OPCODE_SETATTR | 0x30);
-
- EXIT;
-exit:
- presto_release_space(fset->fset_cache, 2*PRESTO_REQHIGH);
- presto_trans_commit(fset, handle);
- return error;
-}
-
-int lento_setattr(const char *name, struct iattr *iattr,
- struct lento_vfs_context *info)
-{
- struct nameidata nd;
- struct dentry *dentry;
- struct presto_file_set *fset;
- int error;
-#if 0 /* was a broken check for Posix ACLs */
- int (*set_posix_acl)(struct inode *, int type, posix_acl_t *)=NULL;
-#endif
-
- ENTRY;
- CDEBUG(D_PIOCTL,"name %s, valid %#x, mode %#o, uid %d, gid %d, size %Ld\n",
- name, iattr->ia_valid, iattr->ia_mode, iattr->ia_uid,
- iattr->ia_gid, iattr->ia_size);
- CDEBUG(D_PIOCTL, "atime %#lx, mtime %#lx, ctime %#lx, attr_flags %#x\n",
- iattr->ia_atime.tv_sec, iattr->ia_mtime.tv_sec, iattr->ia_ctime.tv_sec,
- iattr->ia_attr_flags);
- CDEBUG(D_PIOCTL, "offset %d, recno %d, flags %#x\n",
- info->slot_offset, info->recno, info->flags);
-
- lock_kernel();
- error = presto_walk(name, &nd);
- if (error) {
- EXIT;
- goto exit;
- }
- dentry = nd.dentry;
-
- fset = presto_fset(dentry);
- error = -EINVAL;
- if ( !fset ) {
- CERROR("No fileset!\n");
- EXIT;
- goto exit_lock;
- }
-
- /* NOTE: this prevents us from changing the filetype on setattr,
- * as we normally only want to change permission bits.
- * If this is not correct, then we need to fix the perl code
- * to always send the file type OR'ed with the permission.
- */
- if (iattr->ia_valid & ATTR_MODE) {
- int set_mode = iattr->ia_mode;
- iattr->ia_mode = (iattr->ia_mode & S_IALLUGO) |
- (dentry->d_inode->i_mode & ~S_IALLUGO);
- CDEBUG(D_PIOCTL, "chmod: orig %#o, set %#o, result %#o\n",
- dentry->d_inode->i_mode, set_mode, iattr->ia_mode);
-#if 0 /* was a broken check for Posix ACLs */
- /* ACl code interacts badly with setattr
- * since it tries to modify the ACL using
- * set_ext_attr which recurses back into presto.
- * This only happens if ATTR_MODE is set.
- * Here we are doing a "forced" mode set
- * (initiated by lento), so we disable the
- * set_posix_acl operation which
- * prevents such recursion. -SHP
- *
- * This will probably still be required when native
- * acl journalling is in place.
- */
- set_posix_acl=dentry->d_inode->i_op->set_posix_acl;
- dentry->d_inode->i_op->set_posix_acl=NULL;
-#endif
- }
-
- error = presto_do_setattr(fset, dentry, iattr, info);
-
- if (info->flags & LENTO_FL_SET_DDFILEID) {
- struct presto_dentry_data *dd = presto_d2d(dentry);
- if (dd) {
- dd->remote_ino = info->remote_ino;
- dd->remote_generation = info->remote_generation;
- }
- }
-
-#if 0 /* was a broken check for Posix ACLs */
- /* restore the inode_operations if we changed them*/
- if (iattr->ia_valid & ATTR_MODE)
- dentry->d_inode->i_op->set_posix_acl=set_posix_acl;
-#endif
-
-
- EXIT;
-exit_lock:
- path_release(&nd);
-exit:
- unlock_kernel();
- return error;
-}
-
-int presto_do_create(struct presto_file_set *fset, struct dentry *dir,
- struct dentry *dentry, int mode,
- struct lento_vfs_context *info)
-{
- struct rec_info rec;
- int error;
- struct presto_version tgt_dir_ver, new_file_ver;
- struct inode_operations *iops;
- void *handle;
-
- ENTRY;
- mode &= S_IALLUGO;
- mode |= S_IFREG;
-
- // down(&dir->d_inode->i_zombie);
- error = presto_reserve_space(fset->fset_cache, PRESTO_REQHIGH);
- if (error) {
- EXIT;
- // up(&dir->d_inode->i_zombie);
- return error;
- }
-
- error = may_create(dir->d_inode, dentry);
- if (error) {
- EXIT;
- goto exit_pre_lock;
- }
-
- error = -EPERM;
- iops = filter_c2cdiops(fset->fset_cache->cache_filter);
- if (!iops->create) {
- EXIT;
- goto exit_pre_lock;
- }
-
- presto_getversion(&tgt_dir_ver, dir->d_inode);
- handle = presto_trans_start(fset, dir->d_inode, KML_OPCODE_CREATE);
- if ( IS_ERR(handle) ) {
- EXIT;
- presto_release_space(fset->fset_cache, PRESTO_REQHIGH);
- CERROR("presto_do_create: no space for transaction\n");
- error=-ENOSPC;
- goto exit_pre_lock;
- }
- DQUOT_INIT(dir->d_inode);
- lock_kernel();
- error = iops->create(dir->d_inode, dentry, mode, NULL);
- if (error) {
- EXIT;
- goto exit_lock;
- }
-
- if (dentry->d_inode) {
- struct presto_cache *cache = fset->fset_cache;
- /* was this already done? */
- presto_set_ops(dentry->d_inode, cache->cache_filter);
-
- filter_setup_dentry_ops(cache->cache_filter,
- dentry->d_op,
- &presto_dentry_ops);
- dentry->d_op = filter_c2udops(cache->cache_filter);
-
- /* if Lento creates this file, we won't have data */
- if ( ISLENTO(presto_c2m(cache)) ) {
- presto_set(dentry, PRESTO_ATTR);
- } else {
- presto_set(dentry, PRESTO_ATTR | PRESTO_DATA);
- }
- }
-
- info->flags |= LENTO_FL_TOUCH_PARENT;
- error = presto_settime(fset, NULL, dir, dentry,
- info, ATTR_CTIME | ATTR_MTIME);
- if (error) {
- EXIT;
- goto exit_lock;
- }
-
- presto_debug_fail_blkdev(fset, KML_OPCODE_CREATE | 0x10);
-
- if ( presto_do_kml(info, dentry) ) {
- presto_getversion(&new_file_ver, dentry->d_inode);
- error = presto_journal_create(&rec, fset, dentry, &tgt_dir_ver,
- &new_file_ver,
- dentry->d_inode->i_mode);
- }
-
- presto_debug_fail_blkdev(fset, KML_OPCODE_CREATE | 0x20);
-
- if ( presto_do_rcvd(info, dentry) )
- error = presto_write_last_rcvd(&rec, fset, info);
-
- presto_debug_fail_blkdev(fset, KML_OPCODE_CREATE | 0x30);
-
- /* add inode dentry */
- if (fset->fset_cache->cache_filter->o_trops->tr_add_ilookup ) {
- struct dentry *d;
- d = fset->fset_cache->cache_filter->o_trops->tr_add_ilookup
- (dir->d_inode->i_sb->s_root, dentry);
- }
-
- EXIT;
-
- exit_lock:
- unlock_kernel();
- presto_trans_commit(fset, handle);
- exit_pre_lock:
- presto_release_space(fset->fset_cache, PRESTO_REQHIGH);
- // up(&dir->d_inode->i_zombie);
- return error;
-}
-
-int lento_create(const char *name, int mode, struct lento_vfs_context *info)
-{
- int error;
- struct nameidata nd;
- char * pathname;
- struct dentry *dentry;
- struct presto_file_set *fset;
-
- ENTRY;
- pathname = getname(name);
- error = PTR_ERR(pathname);
- if (IS_ERR(pathname)) {
- EXIT;
- goto exit;
- }
-
- /* this looks up the parent */
- error = path_lookup(pathname, LOOKUP_PARENT, &nd);
- if (error) {
- EXIT;
- goto exit;
- }
- dentry = lookup_create(&nd, 0);
- error = PTR_ERR(dentry);
- if (IS_ERR(dentry)) {
- EXIT;
- goto exit_lock;
- }
-
- fset = presto_fset(dentry);
- error = -EINVAL;
- if ( !fset ) {
- CERROR("No fileset!\n");
- EXIT;
- goto exit_lock;
- }
- error = presto_do_create(fset, dentry->d_parent, dentry, (mode&S_IALLUGO)|S_IFREG,
- info);
-
- EXIT;
-
- exit_lock:
- path_release (&nd);
- dput(dentry);
- up(&dentry->d_parent->d_inode->i_sem);
- putname(pathname);
-exit:
- return error;
-}
-
-int presto_do_link(struct presto_file_set *fset, struct dentry *old_dentry,
- struct dentry *dir, struct dentry *new_dentry,
- struct lento_vfs_context *info)
-{
- struct rec_info rec;
- struct inode *inode;
- int error;
- struct inode_operations *iops;
- struct presto_version tgt_dir_ver;
- struct presto_version new_link_ver;
- void *handle;
-
- // down(&dir->d_inode->i_zombie);
- error = presto_reserve_space(fset->fset_cache, PRESTO_REQHIGH);
- if (error) {
- EXIT;
- // up(&dir->d_inode->i_zombie);
- return error;
- }
- error = -ENOENT;
- inode = old_dentry->d_inode;
- if (!inode)
- goto exit_lock;
-
- error = may_create(dir->d_inode, new_dentry);
- if (error)
- goto exit_lock;
-
- error = -EXDEV;
- if (dir->d_inode->i_sb != inode->i_sb)
- goto exit_lock;
-
- /*
- * A link to an append-only or immutable file cannot be created.
- */
- error = -EPERM;
- if (IS_APPEND(inode) || IS_IMMUTABLE(inode)) {
- EXIT;
- goto exit_lock;
- }
-
- iops = filter_c2cdiops(fset->fset_cache->cache_filter);
- if (!iops->link) {
- EXIT;
- goto exit_lock;
- }
-
-
- presto_getversion(&tgt_dir_ver, dir->d_inode);
- handle = presto_trans_start(fset, dir->d_inode, KML_OPCODE_LINK);
- if ( IS_ERR(handle) ) {
- presto_release_space(fset->fset_cache, PRESTO_REQHIGH);
- CERROR("presto_do_link: no space for transaction\n");
- return -ENOSPC;
- }
-
- DQUOT_INIT(dir->d_inode);
- lock_kernel();
- error = iops->link(old_dentry, dir->d_inode, new_dentry);
- unlock_kernel();
- if (error) {
- EXIT;
- goto exit_lock;
- }
-
- /* link dd data to that of existing dentry */
- old_dentry->d_op->d_release(new_dentry);
- if (!presto_d2d(old_dentry))
- BUG();
- presto_d2d(old_dentry)->dd_count++;
-
- new_dentry->d_fsdata = presto_d2d(old_dentry);
-
- info->flags |= LENTO_FL_TOUCH_PARENT;
- error = presto_settime(fset, NULL, dir, new_dentry,
- info, ATTR_CTIME);
- if (error) {
- EXIT;
- goto exit_lock;
- }
-
- presto_debug_fail_blkdev(fset, KML_OPCODE_LINK | 0x10);
- presto_getversion(&new_link_ver, new_dentry->d_inode);
- if ( presto_do_kml(info, old_dentry) )
- error = presto_journal_link(&rec, fset, old_dentry, new_dentry,
- &tgt_dir_ver, &new_link_ver);
-
- presto_debug_fail_blkdev(fset, KML_OPCODE_LINK | 0x20);
- if ( presto_do_rcvd(info, old_dentry) )
- error = presto_write_last_rcvd(&rec, fset, info);
-
- presto_debug_fail_blkdev(fset, KML_OPCODE_LINK | 0x30);
- EXIT;
- presto_trans_commit(fset, handle);
-exit_lock:
- presto_release_space(fset->fset_cache, PRESTO_REQHIGH);
- // up(&dir->d_inode->i_zombie);
- return error;
-}
-
-
-int lento_link(const char * oldname, const char * newname,
- struct lento_vfs_context *info)
-{
- int error;
- char * to;
- struct presto_file_set *fset;
-
- to = getname(newname);
- error = PTR_ERR(to);
- if (!IS_ERR(to)) {
- struct dentry *new_dentry;
- struct nameidata nd, old_nd;
-
- error = __user_walk(oldname, 0, &old_nd);
- if (error)
- goto exit;
- error = path_lookup(to, LOOKUP_PARENT, &nd);
- if (error)
- goto out;
- error = -EXDEV;
- if (old_nd.mnt != nd.mnt)
- goto out;
- new_dentry = lookup_create(&nd, 0);
- error = PTR_ERR(new_dentry);
-
- if (!IS_ERR(new_dentry)) {
- fset = presto_fset(new_dentry);
- error = -EINVAL;
- if ( !fset ) {
- CERROR("No fileset!\n");
- EXIT;
- goto out2;
- }
- error = presto_do_link(fset, old_nd.dentry,
- nd.dentry,
- new_dentry, info);
- dput(new_dentry);
- }
- out2:
- up(&nd.dentry->d_inode->i_sem);
- path_release(&nd);
- out:
- path_release(&old_nd);
- exit:
- putname(to);
- }
- return error;
-}
-
-int presto_do_unlink(struct presto_file_set *fset, struct dentry *dir,
- struct dentry *dentry, struct lento_vfs_context *info)
-{
- struct rec_info rec;
- struct inode_operations *iops;
- struct presto_version tgt_dir_ver, old_file_ver;
- struct izo_rollback_data rb;
- void *handle;
- int do_kml = 0, do_rcvd = 0, linkno = 0, error, old_targetlen = 0;
- char *old_target = NULL;
-
- ENTRY;
- // down(&dir->d_inode->i_zombie);
- error = may_delete(dir->d_inode, dentry, 0);
- if (error) {
- EXIT;
- // up(&dir->d_inode->i_zombie);
- return error;
- }
-
- error = -EPERM;
- iops = filter_c2cdiops(fset->fset_cache->cache_filter);
- if (!iops->unlink) {
- EXIT;
- // up(&dir->d_inode->i_zombie);
- return error;
- }
-
- error = presto_reserve_space(fset->fset_cache, PRESTO_REQLOW);
- if (error) {
- EXIT;
- // up(&dir->d_inode->i_zombie);
- return error;
- }
-
-
- if (presto_d2d(dentry)) {
- struct presto_dentry_data *dd = presto_d2d(dentry);
- struct dentry *de = dd->dd_inodentry;
- if (de && dentry->d_inode->i_nlink == 1) {
- dd->dd_count--;
- dd->dd_inodentry = NULL;
- de->d_fsdata = NULL;
- atomic_dec(&de->d_inode->i_count);
- de->d_inode = NULL;
- dput(de);
- }
- }
-
- presto_getversion(&tgt_dir_ver, dir->d_inode);
- presto_getversion(&old_file_ver, dentry->d_inode);
- izo_get_rollback_data(dentry->d_inode, &rb);
- handle = presto_trans_start(fset, dir->d_inode, KML_OPCODE_UNLINK);
- if ( IS_ERR(handle) ) {
- presto_release_space(fset->fset_cache, PRESTO_REQLOW);
- CERROR("ERROR: presto_do_unlink: no space for transaction. Tell Peter.\n");
- // up(&dir->d_inode->i_zombie);
- return -ENOSPC;
- }
- DQUOT_INIT(dir->d_inode);
- if (d_mountpoint(dentry))
- error = -EBUSY;
- else {
- lock_kernel();
- linkno = dentry->d_inode->i_nlink;
- if (linkno > 1) {
- dget(dentry);
- }
-
- if (S_ISLNK(dentry->d_inode->i_mode)) {
- mm_segment_t old_fs;
- struct inode_operations *riops;
- riops = filter_c2csiops(fset->fset_cache->cache_filter);
-
- PRESTO_ALLOC(old_target, PATH_MAX);
- if (old_target == NULL) {
- error = -ENOMEM;
- EXIT;
- goto exit;
- }
-
- old_fs = get_fs();
- set_fs(get_ds());
-
- if (riops->readlink == NULL)
- CERROR("InterMezzo %s: no readlink iops.\n",
- __FUNCTION__);
- else
- old_targetlen =
- riops->readlink(dentry, old_target,
- PATH_MAX);
- if (old_targetlen < 0) {
- CERROR("InterMezzo: readlink failed: %ld\n",
- PTR_ERR(old_target));
- PRESTO_FREE(old_target, PATH_MAX);
- old_target = NULL;
- old_targetlen = 0;
- }
- set_fs(old_fs);
- }
-
- do_kml = presto_do_kml(info, dir);
- do_rcvd = presto_do_rcvd(info, dir);
- error = iops->unlink(dir->d_inode, dentry);
- unlock_kernel();
- }
-
- if (linkno > 1) {
- /* FIXME: Combine this with the next call? */
- error = presto_settime(fset, NULL, NULL, dentry,
- info, ATTR_CTIME);
- dput(dentry);
- if (error) {
- EXIT;
- goto exit;
- }
- }
-
- error = presto_settime(fset, NULL, NULL, dir,
- info, ATTR_CTIME | ATTR_MTIME);
- if (error) {
- EXIT;
- goto exit;
- }
-
- // up(&dir->d_inode->i_zombie);
-
- presto_debug_fail_blkdev(fset, KML_OPCODE_UNLINK | 0x10);
- if ( do_kml )
- error = presto_journal_unlink(&rec, fset, dir, &tgt_dir_ver,
- &old_file_ver, &rb, dentry,
- old_target, old_targetlen);
- presto_debug_fail_blkdev(fset, KML_OPCODE_UNLINK | 0x20);
- if ( do_rcvd ) {
- error = presto_write_last_rcvd(&rec, fset, info);
- }
- presto_debug_fail_blkdev(fset, KML_OPCODE_UNLINK | 0x30);
- EXIT;
-exit:
- presto_release_space(fset->fset_cache, PRESTO_REQLOW);
- presto_trans_commit(fset, handle);
- if (old_target != NULL)
- PRESTO_FREE(old_target, PATH_MAX);
- return error;
-}
-
-
-int lento_unlink(const char *pathname, struct lento_vfs_context *info)
-{
- int error = 0;
- char * name;
- struct dentry *dentry;
- struct nameidata nd;
- struct presto_file_set *fset;
-
- ENTRY;
-
- name = getname(pathname);
- if(IS_ERR(name))
- return PTR_ERR(name);
-
- error = path_lookup(name, LOOKUP_PARENT, &nd);
- if (error)
- goto exit;
- error = -EISDIR;
- if (nd.last_type != LAST_NORM)
- goto exit1;
- down(&nd.dentry->d_inode->i_sem);
- dentry = lookup_hash(&nd.last, nd.dentry);
- error = PTR_ERR(dentry);
- if (!IS_ERR(dentry)) {
- fset = presto_fset(dentry);
- error = -EINVAL;
- if ( !fset ) {
- CERROR("No fileset!\n");
- EXIT;
- goto exit2;
- }
- /* Why not before? Because we want correct error value */
- if (nd.last.name[nd.last.len])
- goto slashes;
- error = presto_do_unlink(fset, nd.dentry, dentry, info);
- if (!error)
- d_delete(dentry);
- exit2:
- EXIT;
- dput(dentry);
- }
- up(&nd.dentry->d_inode->i_sem);
-exit1:
- path_release(&nd);
-exit:
- putname(name);
-
- return error;
-
-slashes:
- error = !dentry->d_inode ? -ENOENT :
- S_ISDIR(dentry->d_inode->i_mode) ? -EISDIR : -ENOTDIR;
- goto exit2;
-}
-
-int presto_do_symlink(struct presto_file_set *fset, struct dentry *dir,
- struct dentry *dentry, const char *oldname,
- struct lento_vfs_context *info)
-{
- struct rec_info rec;
- int error;
- struct presto_version tgt_dir_ver, new_link_ver;
- struct inode_operations *iops;
- void *handle;
-
- ENTRY;
- // down(&dir->d_inode->i_zombie);
- /* record + max path len + space to free */
- error = presto_reserve_space(fset->fset_cache, PRESTO_REQHIGH + 4096);
- if (error) {
- EXIT;
- // up(&dir->d_inode->i_zombie);
- return error;
- }
-
- error = may_create(dir->d_inode, dentry);
- if (error) {
- EXIT;
- goto exit_lock;
- }
-
- error = -EPERM;
- iops = filter_c2cdiops(fset->fset_cache->cache_filter);
- if (!iops->symlink) {
- EXIT;
- goto exit_lock;
- }
-
- presto_getversion(&tgt_dir_ver, dir->d_inode);
- handle = presto_trans_start(fset, dir->d_inode, KML_OPCODE_SYMLINK);
- if ( IS_ERR(handle) ) {
- presto_release_space(fset->fset_cache, PRESTO_REQHIGH + 4096);
- CERROR("ERROR: presto_do_symlink: no space for transaction. Tell Peter.\n");
- EXIT;
- // up(&dir->d_inode->i_zombie);
- return -ENOSPC;
- }
- DQUOT_INIT(dir->d_inode);
- lock_kernel();
- error = iops->symlink(dir->d_inode, dentry, oldname);
- if (error) {
- EXIT;
- goto exit;
- }
-
- if (dentry->d_inode) {
- struct presto_cache *cache = fset->fset_cache;
-
- presto_set_ops(dentry->d_inode, cache->cache_filter);
-
- filter_setup_dentry_ops(cache->cache_filter, dentry->d_op,
- &presto_dentry_ops);
- dentry->d_op = filter_c2udops(cache->cache_filter);
- /* XXX ? Cache state ? if Lento creates a symlink */
- if ( ISLENTO(presto_c2m(cache)) ) {
- presto_set(dentry, PRESTO_ATTR);
- } else {
- presto_set(dentry, PRESTO_ATTR | PRESTO_DATA);
- }
- }
-
- info->flags |= LENTO_FL_TOUCH_PARENT;
- error = presto_settime(fset, NULL, dir, dentry,
- info, ATTR_CTIME | ATTR_MTIME);
- if (error) {
- EXIT;
- goto exit;
- }
-
- presto_debug_fail_blkdev(fset, KML_OPCODE_SYMLINK | 0x10);
- presto_getversion(&new_link_ver, dentry->d_inode);
- if ( presto_do_kml(info, dentry) )
- error = presto_journal_symlink(&rec, fset, dentry, oldname,
- &tgt_dir_ver, &new_link_ver);
-
- presto_debug_fail_blkdev(fset, KML_OPCODE_SYMLINK | 0x20);
- if ( presto_do_rcvd(info, dentry) )
- error = presto_write_last_rcvd(&rec, fset, info);
-
- presto_debug_fail_blkdev(fset, KML_OPCODE_SYMLINK | 0x30);
- EXIT;
-exit:
- unlock_kernel();
- presto_trans_commit(fset, handle);
- exit_lock:
- presto_release_space(fset->fset_cache, PRESTO_REQHIGH + 4096);
- // up(&dir->d_inode->i_zombie);
- return error;
-}
-
-int lento_symlink(const char *oldname, const char *newname,
- struct lento_vfs_context *info)
-{
- int error;
- char *from;
- char *to;
- struct dentry *dentry;
- struct presto_file_set *fset;
- struct nameidata nd;
-
- ENTRY;
- lock_kernel();
- from = getname(oldname);
- error = PTR_ERR(from);
- if (IS_ERR(from)) {
- EXIT;
- goto exit;
- }
-
- to = getname(newname);
- error = PTR_ERR(to);
- if (IS_ERR(to)) {
- EXIT;
- goto exit_from;
- }
-
- error = path_lookup(to, LOOKUP_PARENT, &nd);
- if (error) {
- EXIT;
- goto exit_to;
- }
-
- dentry = lookup_create(&nd, 0);
- error = PTR_ERR(dentry);
- if (IS_ERR(dentry)) {
- path_release(&nd);
- EXIT;
- goto exit_to;
- }
-
- fset = presto_fset(dentry);
- error = -EINVAL;
- if ( !fset ) {
- CERROR("No fileset!\n");
- path_release(&nd);
- EXIT;
- goto exit_lock;
- }
- error = presto_do_symlink(fset, nd.dentry,
- dentry, from, info);
- path_release(&nd);
- EXIT;
- exit_lock:
- up(&nd.dentry->d_inode->i_sem);
- dput(dentry);
- exit_to:
- putname(to);
- exit_from:
- putname(from);
- exit:
- unlock_kernel();
- return error;
-}
-
-int presto_do_mkdir(struct presto_file_set *fset, struct dentry *dir,
- struct dentry *dentry, int mode,
- struct lento_vfs_context *info)
-{
- struct rec_info rec;
- int error;
- struct presto_version tgt_dir_ver, new_dir_ver;
- void *handle;
-
- ENTRY;
- // down(&dir->d_inode->i_zombie);
-
- /* one journal record + directory block + room for removals*/
- error = presto_reserve_space(fset->fset_cache, PRESTO_REQHIGH + 4096);
- if (error) {
- EXIT;
- // up(&dir->d_inode->i_zombie);
- return error;
- }
-
- error = may_create(dir->d_inode, dentry);
- if (error) {
- EXIT;
- goto exit_lock;
- }
-
- error = -EPERM;
- if (!filter_c2cdiops(fset->fset_cache->cache_filter)->mkdir) {
- EXIT;
- goto exit_lock;
- }
-
- error = -ENOSPC;
- presto_getversion(&tgt_dir_ver, dir->d_inode);
- handle = presto_trans_start(fset, dir->d_inode, KML_OPCODE_MKDIR);
- if ( IS_ERR(handle) ) {
- presto_release_space(fset->fset_cache, PRESTO_REQHIGH + 4096);
- CERROR("presto_do_mkdir: no space for transaction\n");
- goto exit_lock;
- }
-
- DQUOT_INIT(dir->d_inode);
- mode &= (S_IRWXUGO|S_ISVTX);
- lock_kernel();
- error = filter_c2cdiops(fset->fset_cache->cache_filter)->mkdir(dir->d_inode, dentry, mode);
- if (error) {
- EXIT;
- goto exit;
- }
-
- if ( dentry->d_inode && !error) {
- struct presto_cache *cache = fset->fset_cache;
-
- presto_set_ops(dentry->d_inode, cache->cache_filter);
-
- filter_setup_dentry_ops(cache->cache_filter,
- dentry->d_op,
- &presto_dentry_ops);
- dentry->d_op = filter_c2udops(cache->cache_filter);
- /* if Lento does this, we won't have data */
- if ( ISLENTO(presto_c2m(cache)) ) {
- presto_set(dentry, PRESTO_ATTR);
- } else {
- presto_set(dentry, PRESTO_ATTR | PRESTO_DATA);
- }
- }
-
- info->flags |= LENTO_FL_TOUCH_PARENT;
- error = presto_settime(fset, NULL, dir, dentry,
- info, ATTR_CTIME | ATTR_MTIME);
- if (error) {
- EXIT;
- goto exit;
- }
-
- presto_debug_fail_blkdev(fset, KML_OPCODE_MKDIR | 0x10);
- presto_getversion(&new_dir_ver, dentry->d_inode);
- if ( presto_do_kml(info, dir) )
- error = presto_journal_mkdir(&rec, fset, dentry, &tgt_dir_ver,
- &new_dir_ver,
- dentry->d_inode->i_mode);
-
- presto_debug_fail_blkdev(fset, KML_OPCODE_MKDIR | 0x20);
- if ( presto_do_rcvd(info, dentry) )
- error = presto_write_last_rcvd(&rec, fset, info);
-
- presto_debug_fail_blkdev(fset, KML_OPCODE_MKDIR | 0x30);
- EXIT;
-exit:
- unlock_kernel();
- presto_trans_commit(fset, handle);
- exit_lock:
- presto_release_space(fset->fset_cache, PRESTO_REQHIGH + 4096);
- // up(&dir->d_inode->i_zombie);
- return error;
-}
-
-/*
- * Look out: this function may change a normal dentry
- * into a directory dentry (different size)..
- */
-int lento_mkdir(const char *name, int mode, struct lento_vfs_context *info)
-{
- int error;
- char *pathname;
- struct dentry *dentry;
- struct presto_file_set *fset;
- struct nameidata nd;
-
- ENTRY;
- CDEBUG(D_PIOCTL, "name: %s, mode %o, offset %d, recno %d, flags %x\n",
- name, mode, info->slot_offset, info->recno, info->flags);
- pathname = getname(name);
- error = PTR_ERR(pathname);
- if (IS_ERR(pathname)) {
- EXIT;
- return error;
- }
-
- error = path_lookup(pathname, LOOKUP_PARENT, &nd);
- if (error)
- goto out_name;
-
- dentry = lookup_create(&nd, 1);
- error = PTR_ERR(dentry);
- if (!IS_ERR(dentry)) {
- fset = presto_fset(dentry);
- error = -EINVAL;
- if (!fset) {
- CERROR("No fileset!\n");
- EXIT;
- goto out_dput;
- }
-
- error = presto_do_mkdir(fset, nd.dentry, dentry,
- mode & S_IALLUGO, info);
-out_dput:
- dput(dentry);
- }
- up(&nd.dentry->d_inode->i_sem);
- path_release(&nd);
-out_name:
- EXIT;
- putname(pathname);
- CDEBUG(D_PIOCTL, "error: %d\n", error);
- return error;
-}
-
-static void d_unhash(struct dentry *dentry)
-{
- dget(dentry);
- switch (atomic_read(&dentry->d_count)) {
- default:
- shrink_dcache_parent(dentry);
- if (atomic_read(&dentry->d_count) != 2)
- break;
- case 2:
- d_drop(dentry);
- }
-}
-
-int presto_do_rmdir(struct presto_file_set *fset, struct dentry *dir,
- struct dentry *dentry, struct lento_vfs_context *info)
-{
- struct rec_info rec;
- int error;
- struct presto_version tgt_dir_ver, old_dir_ver;
- struct izo_rollback_data rb;
- struct inode_operations *iops;
- void *handle;
- int do_kml, do_rcvd;
- int size;
-
- ENTRY;
- error = may_delete(dir->d_inode, dentry, 1);
- if (error)
- return error;
-
- error = -EPERM;
- iops = filter_c2cdiops(fset->fset_cache->cache_filter);
- if (!iops->rmdir) {
- EXIT;
- return error;
- }
-
- size = PRESTO_REQHIGH - dentry->d_inode->i_size;
- error = presto_reserve_space(fset->fset_cache, size);
- if (error) {
- EXIT;
- return error;
- }
-
- presto_getversion(&tgt_dir_ver, dir->d_inode);
- presto_getversion(&old_dir_ver, dentry->d_inode);
- izo_get_rollback_data(dentry->d_inode, &rb);
- handle = presto_trans_start(fset, dir->d_inode, KML_OPCODE_RMDIR);
- if ( IS_ERR(handle) ) {
- presto_release_space(fset->fset_cache, size);
- CERROR("ERROR: presto_do_rmdir: no space for transaction. Tell Peter.\n");
- return -ENOSPC;
- }
-
- DQUOT_INIT(dir->d_inode);
-
- do_kml = presto_do_kml(info, dir);
- do_rcvd = presto_do_rcvd(info, dir);
-
- // double_down(&dir->d_inode->i_zombie, &dentry->d_inode->i_zombie);
- d_unhash(dentry);
- if (IS_DEADDIR(dir->d_inode))
- error = -ENOENT;
- else if (d_mountpoint(dentry)) {
- CERROR("foo: d_mountpoint(dentry): ino %ld\n",
- dentry->d_inode->i_ino);
- error = -EBUSY;
- } else {
- lock_kernel();
- error = iops->rmdir(dir->d_inode, dentry);
- unlock_kernel();
- if (!error) {
- dentry->d_inode->i_flags |= S_DEAD;
- error = presto_settime(fset, NULL, NULL, dir, info,
- ATTR_CTIME | ATTR_MTIME);
- }
- }
- // double_up(&dir->d_inode->i_zombie, &dentry->d_inode->i_zombie);
- if (!error)
- d_delete(dentry);
- dput(dentry);
-
- presto_debug_fail_blkdev(fset, KML_OPCODE_RMDIR | 0x10);
- if ( !error && do_kml )
- error = presto_journal_rmdir(&rec, fset, dir, &tgt_dir_ver,
- &old_dir_ver, &rb,
- dentry->d_name.len,
- dentry->d_name.name);
-
- presto_debug_fail_blkdev(fset, KML_OPCODE_RMDIR | 0x20);
- if ( !error && do_rcvd )
- error = presto_write_last_rcvd(&rec, fset, info);
-
- presto_debug_fail_blkdev(fset, KML_OPCODE_RMDIR | 0x30);
- EXIT;
-
- presto_trans_commit(fset, handle);
- presto_release_space(fset->fset_cache, size);
- return error;
-}
-
-int lento_rmdir(const char *pathname, struct lento_vfs_context *info)
-{
- int error = 0;
- char * name;
- struct dentry *dentry;
- struct presto_file_set *fset;
- struct nameidata nd;
-
- ENTRY;
- name = getname(pathname);
- if(IS_ERR(name)) {
- EXIT;
- return PTR_ERR(name);
- }
-
- error = path_lookup(name, LOOKUP_PARENT, &nd);
- if (error) {
- EXIT;
- goto exit;
- }
- switch(nd.last_type) {
- case LAST_DOTDOT:
- error = -ENOTEMPTY;
- EXIT;
- goto exit1;
- case LAST_ROOT:
- case LAST_DOT:
- error = -EBUSY;
- EXIT;
- goto exit1;
- }
- down(&nd.dentry->d_inode->i_sem);
- dentry = lookup_hash(&nd.last, nd.dentry);
- error = PTR_ERR(dentry);
- if (!IS_ERR(dentry)) {
- fset = presto_fset(dentry);
- error = -EINVAL;
- if ( !fset ) {
- CERROR("No fileset!\n");
- EXIT;
- goto exit_put;
- }
- error = presto_do_rmdir(fset, nd.dentry, dentry, info);
- exit_put:
- dput(dentry);
- }
- up(&nd.dentry->d_inode->i_sem);
-exit1:
- path_release(&nd);
-exit:
- putname(name);
- EXIT;
- return error;
-}
-
-int presto_do_mknod(struct presto_file_set *fset, struct dentry *dir,
- struct dentry *dentry, int mode, dev_t dev,
- struct lento_vfs_context *info)
-{
- struct rec_info rec;
- int error = -EPERM;
- struct presto_version tgt_dir_ver, new_node_ver;
- struct inode_operations *iops;
- void *handle;
-
- ENTRY;
-
- // down(&dir->d_inode->i_zombie);
- /* one KML entry */
- error = presto_reserve_space(fset->fset_cache, PRESTO_REQHIGH);
- if (error) {
- EXIT;
- // up(&dir->d_inode->i_zombie);
- return error;
- }
-
- if ((S_ISCHR(mode) || S_ISBLK(mode)) && !capable(CAP_MKNOD)) {
- EXIT;
- goto exit_lock;
- }
-
- error = may_create(dir->d_inode, dentry);
- if (error) {
- EXIT;
- goto exit_lock;
- }
-
- error = -EPERM;
- iops = filter_c2cdiops(fset->fset_cache->cache_filter);
- if (!iops->mknod) {
- EXIT;
- goto exit_lock;
- }
-
- DQUOT_INIT(dir->d_inode);
- lock_kernel();
-
- error = -ENOSPC;
- presto_getversion(&tgt_dir_ver, dir->d_inode);
- handle = presto_trans_start(fset, dir->d_inode, KML_OPCODE_MKNOD);
- if ( IS_ERR(handle) ) {
- presto_release_space(fset->fset_cache, PRESTO_REQHIGH);
- CERROR("presto_do_mknod: no space for transaction\n");
- goto exit_lock2;
- }
-
- error = iops->mknod(dir->d_inode, dentry, mode, dev);
- if (error) {
- EXIT;
- goto exit_commit;
- }
- if ( dentry->d_inode) {
- struct presto_cache *cache = fset->fset_cache;
-
- presto_set_ops(dentry->d_inode, cache->cache_filter);
-
- filter_setup_dentry_ops(cache->cache_filter, dentry->d_op,
- &presto_dentry_ops);
- dentry->d_op = filter_c2udops(cache->cache_filter);
-
- /* if Lento does this, we won't have data */
- if ( ISLENTO(presto_c2m(cache)) ) {
- presto_set(dentry, PRESTO_ATTR);
- } else {
- presto_set(dentry, PRESTO_ATTR | PRESTO_DATA);
- }
- }
-
- error = presto_settime(fset, NULL, NULL, dir,
- info, ATTR_MTIME);
- if (error) {
- EXIT;
- }
- error = presto_settime(fset, NULL, NULL, dentry,
- info, ATTR_CTIME | ATTR_MTIME);
- if (error) {
- EXIT;
- }
-
- presto_debug_fail_blkdev(fset, KML_OPCODE_MKNOD | 0x10);
- presto_getversion(&new_node_ver, dentry->d_inode);
- if ( presto_do_kml(info, dentry) )
- error = presto_journal_mknod(&rec, fset, dentry, &tgt_dir_ver,
- &new_node_ver,
- dentry->d_inode->i_mode,
- MAJOR(dev), MINOR(dev) );
-
- presto_debug_fail_blkdev(fset, KML_OPCODE_MKNOD | 0x20);
- if ( presto_do_rcvd(info, dentry) )
- error = presto_write_last_rcvd(&rec, fset, info);
-
- presto_debug_fail_blkdev(fset, KML_OPCODE_MKNOD | 0x30);
- EXIT;
- exit_commit:
- presto_trans_commit(fset, handle);
- exit_lock2:
- unlock_kernel();
- exit_lock:
- presto_release_space(fset->fset_cache, PRESTO_REQHIGH);
- // up(&dir->d_inode->i_zombie);
- return error;
-}
-
-int lento_mknod(const char *filename, int mode, dev_t dev,
- struct lento_vfs_context *info)
-{
- int error = 0;
- char * tmp;
- struct dentry * dentry;
- struct nameidata nd;
- struct presto_file_set *fset;
-
- ENTRY;
-
- if (S_ISDIR(mode))
- return -EPERM;
- tmp = getname(filename);
- if (IS_ERR(tmp))
- return PTR_ERR(tmp);
-
- error = path_lookup(tmp, LOOKUP_PARENT, &nd);
- if (error)
- goto out;
- dentry = lookup_create(&nd, 0);
- error = PTR_ERR(dentry);
- if (!IS_ERR(dentry)) {
- fset = presto_fset(dentry);
- error = -EINVAL;
- if ( !fset ) {
- CERROR("No fileset!\n");
- EXIT;
- goto exit_put;
- }
- switch (mode & S_IFMT) {
- case 0: case S_IFREG:
- error = -EOPNOTSUPP;
- break;
- case S_IFCHR: case S_IFBLK: case S_IFIFO: case S_IFSOCK:
- error = presto_do_mknod(fset, nd.dentry, dentry,
- mode, dev, info);
- break;
- case S_IFDIR:
- error = -EPERM;
- break;
- default:
- error = -EINVAL;
- }
- exit_put:
- dput(dentry);
- }
- up(&nd.dentry->d_inode->i_sem);
- path_release(&nd);
-out:
- putname(tmp);
-
- return error;
-}
-
-int do_rename(struct presto_file_set *fset,
- struct dentry *old_parent, struct dentry *old_dentry,
- struct dentry *new_parent, struct dentry *new_dentry,
- struct lento_vfs_context *info)
-{
- struct rec_info rec;
- int error;
- struct inode_operations *iops;
- struct presto_version src_dir_ver, tgt_dir_ver;
- void *handle;
- int new_inode_unlink = 0;
- struct inode *old_dir = old_parent->d_inode;
- struct inode *new_dir = new_parent->d_inode;
-
- ENTRY;
- presto_getversion(&src_dir_ver, old_dir);
- presto_getversion(&tgt_dir_ver, new_dir);
-
- error = -EPERM;
- iops = filter_c2cdiops(fset->fset_cache->cache_filter);
- if (!iops || !iops->rename) {
- EXIT;
- return error;
- }
-
- error = presto_reserve_space(fset->fset_cache, PRESTO_REQHIGH);
- if (error) {
- EXIT;
- return error;
- }
- handle = presto_trans_start(fset, old_dir, KML_OPCODE_RENAME);
- if ( IS_ERR(handle) ) {
- presto_release_space(fset->fset_cache, PRESTO_REQHIGH);
- CERROR("presto_do_rename: no space for transaction\n");
- return -ENOSPC;
- }
- if (new_dentry->d_inode && new_dentry->d_inode->i_nlink > 1) {
- dget(new_dentry);
- new_inode_unlink = 1;
- }
-
- error = iops->rename(old_dir, old_dentry, new_dir, new_dentry);
-
- if (error) {
- EXIT;
- goto exit;
- }
-
- if (new_inode_unlink) {
- error = presto_settime(fset, NULL, NULL, old_dentry,
- info, ATTR_CTIME);
- dput(old_dentry);
- if (error) {
- EXIT;
- goto exit;
- }
- }
- info->flags |= LENTO_FL_TOUCH_PARENT;
- error = presto_settime(fset, NULL, new_parent, old_parent,
- info, ATTR_CTIME | ATTR_MTIME);
- if (error) {
- EXIT;
- goto exit;
- }
-
- /* XXX make a distinction between cross file set
- * and intra file set renames here
- */
- presto_debug_fail_blkdev(fset, KML_OPCODE_RENAME | 0x10);
- if ( presto_do_kml(info, old_dentry) )
- error = presto_journal_rename(&rec, fset, old_dentry,
- new_dentry,
- &src_dir_ver, &tgt_dir_ver);
-
- presto_debug_fail_blkdev(fset, KML_OPCODE_RENAME | 0x20);
-
- if ( presto_do_rcvd(info, old_dentry) )
- error = presto_write_last_rcvd(&rec, fset, info);
-
- presto_debug_fail_blkdev(fset, KML_OPCODE_RENAME | 0x30);
- EXIT;
-exit:
- presto_trans_commit(fset, handle);
- presto_release_space(fset->fset_cache, PRESTO_REQHIGH);
- return error;
-}
-
-static
-int presto_rename_dir(struct presto_file_set *fset, struct dentry *old_parent,
- struct dentry *old_dentry, struct dentry *new_parent,
- struct dentry *new_dentry, struct lento_vfs_context *info)
-{
- int error;
- struct inode *target;
- struct inode *old_dir = old_parent->d_inode;
- struct inode *new_dir = new_parent->d_inode;
-
- if (old_dentry->d_inode == new_dentry->d_inode)
- return 0;
-
- error = may_delete(old_dir, old_dentry, 1);
- if (error)
- return error;
-
- if (new_dir->i_sb != old_dir->i_sb)
- return -EXDEV;
-
- if (!new_dentry->d_inode)
- error = may_create(new_dir, new_dentry);
- else
- error = may_delete(new_dir, new_dentry, 1);
- if (error)
- return error;
-
- if (!old_dir->i_op || !old_dir->i_op->rename)
- return -EPERM;
-
- /*
- * If we are going to change the parent - check write permissions,
- * we'll need to flip '..'.
- */
- if (new_dir != old_dir) {
- error = permission(old_dentry->d_inode, MAY_WRITE, NULL);
- }
- if (error)
- return error;
-
- DQUOT_INIT(old_dir);
- DQUOT_INIT(new_dir);
- down(&old_dir->i_sb->s_vfs_rename_sem);
- error = -EINVAL;
- if (is_subdir(new_dentry, old_dentry))
- goto out_unlock;
- target = new_dentry->d_inode;
- if (target) { /* Hastur! Hastur! Hastur! */
- // triple_down(&old_dir->i_zombie,
- // &new_dir->i_zombie,
- // &target->i_zombie);
- d_unhash(new_dentry);
- } else
- // double_down(&old_dir->i_zombie,
- // &new_dir->i_zombie);
- if (IS_DEADDIR(old_dir)||IS_DEADDIR(new_dir))
- error = -ENOENT;
- else if (d_mountpoint(old_dentry)||d_mountpoint(new_dentry))
- error = -EBUSY;
- else
- error = do_rename(fset, old_parent, old_dentry,
- new_parent, new_dentry, info);
- if (target) {
- if (!error)
- target->i_flags |= S_DEAD;
- // triple_up(&old_dir->i_zombie,
- // &new_dir->i_zombie,
- // &target->i_zombie);
- if (d_unhashed(new_dentry))
- d_rehash(new_dentry);
- dput(new_dentry);
- } else
- // double_up(&old_dir->i_zombie,
- // &new_dir->i_zombie);
-
- if (!error)
- d_move(old_dentry,new_dentry);
-out_unlock:
- up(&old_dir->i_sb->s_vfs_rename_sem);
- return error;
-}
-
-static
-int presto_rename_other(struct presto_file_set *fset, struct dentry *old_parent,
- struct dentry *old_dentry, struct dentry *new_parent,
- struct dentry *new_dentry, struct lento_vfs_context *info)
-{
- struct inode *old_dir = old_parent->d_inode;
- struct inode *new_dir = new_parent->d_inode;
- int error;
-
- if (old_dentry->d_inode == new_dentry->d_inode)
- return 0;
-
- error = may_delete(old_dir, old_dentry, 0);
- if (error)
- return error;
-
- if (new_dir->i_sb != old_dir->i_sb)
- return -EXDEV;
-
- if (!new_dentry->d_inode)
- error = may_create(new_dir, new_dentry);
- else
- error = may_delete(new_dir, new_dentry, 0);
- if (error)
- return error;
-
- if (!old_dir->i_op || !old_dir->i_op->rename)
- return -EPERM;
-
- DQUOT_INIT(old_dir);
- DQUOT_INIT(new_dir);
- // double_down(&old_dir->i_zombie, &new_dir->i_zombie);
- if (d_mountpoint(old_dentry)||d_mountpoint(new_dentry))
- error = -EBUSY;
- else
- error = do_rename(fset, old_parent, old_dentry,
- new_parent, new_dentry, info);
- // double_up(&old_dir->i_zombie, &new_dir->i_zombie);
- if (error)
- return error;
- /* The following d_move() should become unconditional */
- if (!(old_dir->i_sb->s_type->fs_flags & FS_ODD_RENAME)) {
- d_move(old_dentry, new_dentry);
- }
- return 0;
-}
-
-int presto_do_rename(struct presto_file_set *fset,
- struct dentry *old_parent, struct dentry *old_dentry,
- struct dentry *new_parent, struct dentry *new_dentry,
- struct lento_vfs_context *info)
-{
- if (S_ISDIR(old_dentry->d_inode->i_mode))
- return presto_rename_dir(fset, old_parent,old_dentry,new_parent,
- new_dentry, info);
- else
- return presto_rename_other(fset, old_parent, old_dentry,
- new_parent,new_dentry, info);
-}
-
-
-int lento_do_rename(const char *oldname, const char *newname,
- struct lento_vfs_context *info)
-{
- int error = 0;
- struct dentry * old_dir, * new_dir;
- struct dentry * old_dentry, *new_dentry;
- struct nameidata oldnd, newnd;
- struct presto_file_set *fset;
-
- ENTRY;
-
- error = path_lookup(oldname, LOOKUP_PARENT, &oldnd);
- if (error)
- goto exit;
-
- error = path_lookup(newname, LOOKUP_PARENT, &newnd);
- if (error)
- goto exit1;
-
- error = -EXDEV;
- if (oldnd.mnt != newnd.mnt)
- goto exit2;
-
- old_dir = oldnd.dentry;
- error = -EBUSY;
- if (oldnd.last_type != LAST_NORM)
- goto exit2;
-
- new_dir = newnd.dentry;
- if (newnd.last_type != LAST_NORM)
- goto exit2;
-
- lock_rename(new_dir, old_dir);
-
- old_dentry = lookup_hash(&oldnd.last, old_dir);
- error = PTR_ERR(old_dentry);
- if (IS_ERR(old_dentry))
- goto exit3;
- /* source must exist */
- error = -ENOENT;
- if (!old_dentry->d_inode)
- goto exit4;
- fset = presto_fset(old_dentry);
- error = -EINVAL;
- if ( !fset ) {
- CERROR("No fileset!\n");
- EXIT;
- goto exit4;
- }
- /* unless the source is a directory trailing slashes give -ENOTDIR */
- if (!S_ISDIR(old_dentry->d_inode->i_mode)) {
- error = -ENOTDIR;
- if (oldnd.last.name[oldnd.last.len])
- goto exit4;
- if (newnd.last.name[newnd.last.len])
- goto exit4;
- }
- new_dentry = lookup_hash(&newnd.last, new_dir);
- error = PTR_ERR(new_dentry);
- if (IS_ERR(new_dentry))
- goto exit4;
-
- lock_kernel();
- error = presto_do_rename(fset, old_dir, old_dentry,
- new_dir, new_dentry, info);
- unlock_kernel();
-
- dput(new_dentry);
-exit4:
- dput(old_dentry);
-exit3:
- unlock_rename(new_dir, old_dir);
-exit2:
- path_release(&newnd);
-exit1:
- path_release(&oldnd);
-exit:
- return error;
-}
-
-int lento_rename(const char * oldname, const char * newname,
- struct lento_vfs_context *info)
-{
- int error;
- char * from;
- char * to;
-
- from = getname(oldname);
- if(IS_ERR(from))
- return PTR_ERR(from);
- to = getname(newname);
- error = PTR_ERR(to);
- if (!IS_ERR(to)) {
- error = lento_do_rename(from,to, info);
- putname(to);
- }
- putname(from);
- return error;
-}
-
-struct dentry *presto_iopen(struct dentry *dentry,
- ino_t ino, unsigned int generation)
-{
- struct presto_file_set *fset;
- char name[48];
- int error;
-
- ENTRY;
- /* see if we already have the dentry we want */
- if (dentry->d_inode && dentry->d_inode->i_ino == ino &&
- dentry->d_inode->i_generation == generation) {
- EXIT;
- return dentry;
- }
-
- /* Make sure we have a cache beneath us. We should always find at
- * least one dentry inside the cache (if it exists), otherwise not
- * even the cache root exists, or we passed in a bad name.
- */
- fset = presto_fset(dentry);
- error = -EINVAL;
- if (!fset) {
- CERROR("No fileset for %*s!\n",
- dentry->d_name.len, dentry->d_name.name);
- EXIT;
- dput(dentry);
- return ERR_PTR(error);
- }
- dput(dentry);
-
- sprintf(name, "%s%#lx%c%#x",
- PRESTO_ILOOKUP_MAGIC, ino, PRESTO_ILOOKUP_SEP, generation);
- CDEBUG(D_PIOCTL, "opening %ld by number (as %s)\n", ino, name);
- return lookup_one_len(name, fset->fset_dentry, strlen(name));
-}
-
-static struct file *presto_filp_dopen(struct dentry *dentry, int flags)
-{
- struct file *f;
- struct inode *inode;
- int flag, error;
-
- ENTRY;
- error = -ENFILE;
- f = get_empty_filp();
- if (!f) {
- CDEBUG(D_PIOCTL, "error getting file pointer\n");
- EXIT;
- goto out;
- }
- f->f_flags = flag = flags;
- f->f_mode = (flag+1) & O_ACCMODE;
- inode = dentry->d_inode;
- if (f->f_mode & FMODE_WRITE) {
- error = get_write_access(inode);
- if (error) {
- CDEBUG(D_PIOCTL, "error getting write access\n");
- EXIT; goto cleanup_file;
- }
- }
-
- /* XXX: where the fuck is ->f_vfsmnt? */
- f->f_dentry = dentry;
- f->f_mapping = dentry->d_inode->i_mapping;
- f->f_pos = 0;
- //f->f_reada = 0;
- f->f_op = NULL;
- if (inode->i_op)
- /* XXX should we set to presto ops, or leave at cache ops? */
- f->f_op = inode->i_fop;
- if (f->f_op && f->f_op->open) {
- error = f->f_op->open(inode, f);
- if (error) {
- CDEBUG(D_PIOCTL, "error calling cache 'open'\n");
- EXIT;
- goto cleanup_all;
- }
- }
- f->f_flags &= ~(O_CREAT | O_EXCL | O_NOCTTY | O_TRUNC);
-
- return f;
-
-cleanup_all:
- if (f->f_mode & FMODE_WRITE)
- put_write_access(inode);
-cleanup_file:
- put_filp(f);
-out:
- return ERR_PTR(error);
-}
-
-
-/* Open an inode by number. We pass in the cache root name (or a subdirectory
- * from the cache that is guaranteed to exist) to be able to access the cache.
- */
-int lento_iopen(const char *name, ino_t ino, unsigned int generation,
- int flags)
-{
- char * tmp;
- struct dentry *dentry;
- struct nameidata nd;
- int fd;
- int error;
-
- ENTRY;
- CDEBUG(D_PIOCTL,
- "open %s:inode %#lx (%ld), generation %x (%d), flags %d \n",
- name, ino, ino, generation, generation, flags);
- /* We don't allow creation of files by number only, as it would
- * lead to a dangling files not in any directory. We could also
- * just turn off the flag and ignore it.
- */
- if (flags & O_CREAT) {
- CERROR("%s: create file by inode number (%ld) not allowed\n",
- __FUNCTION__, ino);
- EXIT;
- return -EACCES;
- }
-
- tmp = getname(name);
- if (IS_ERR(tmp)) {
- EXIT;
- return PTR_ERR(tmp);
- }
-
- lock_kernel();
-again: /* look the named file or a parent directory so we can get the cache */
- error = presto_walk(tmp, &nd);
- if ( error && error != -ENOENT ) {
- EXIT;
- unlock_kernel();
- putname(tmp);
- return error;
- }
- if (error == -ENOENT)
- dentry = NULL;
- else
- dentry = nd.dentry;
-
- /* we didn't find the named file, so see if a parent exists */
- if (!dentry) {
- char *slash;
-
- slash = strrchr(tmp, '/');
- if (slash && slash != tmp) {
- *slash = '\0';
- path_release(&nd);
- goto again;
- }
- /* we should never get here... */
- CDEBUG(D_PIOCTL, "no more path components to try!\n");
- fd = -ENOENT;
- goto exit;
- }
- CDEBUG(D_PIOCTL, "returned dentry %p\n", dentry);
-
- dentry = presto_iopen(dentry, ino, generation);
- fd = PTR_ERR(dentry);
- if (IS_ERR(dentry)) {
- EXIT;
- goto exit;
- }
-
- /* XXX start of code that might be replaced by something like:
- * if (flags & (O_WRONLY | O_RDWR)) {
- * error = get_write_access(dentry->d_inode);
- * if (error) {
- * EXIT;
- * goto cleanup_dput;
- * }
- * }
- * fd = open_dentry(dentry, flags);
- *
- * including the presto_filp_dopen() function (check dget counts!)
- */
- fd = get_unused_fd();
- if (fd < 0) {
- EXIT;
- goto exit;
- }
-
- {
- int error;
- struct file * f = presto_filp_dopen(dentry, flags);
- error = PTR_ERR(f);
- if (IS_ERR(f)) {
- put_unused_fd(fd);
- fd = error;
- } else {
- fd_install(fd, f);
- }
- }
- /* end of code that might be replaced by open_dentry */
-
- EXIT;
-exit:
- unlock_kernel();
- path_release(&nd);
- putname(tmp);
- return fd;
-}
-
-#ifdef CONFIG_FS_EXT_ATTR
-
-#if 0 /* was a broken check for Posix ACLs */
-/* Posix ACL code changes i_mode without using a notify_change (or
- * a mark_inode_dirty!). We need to duplicate this at the reintegrator
- * which is done by this function. This function also takes care of
- * resetting the cached posix acls in this inode. If we don't reset these
- * VFS continues using the old acl information, which by now may be out of
- * date.
- */
-int presto_setmode(struct presto_file_set *fset, struct dentry *dentry,
- mode_t mode)
-{
- struct inode *inode = dentry->d_inode;
-
- ENTRY;
- /* The extended attributes for this inode were modified.
- * At this point we can not be sure if any of the ACL
- * information for this inode was updated. So we will
- * force VFS to reread the acls. Note that we do this
- * only when called from the SETEXTATTR ioctl, which is why we
- * do this while setting the mode of the file. Also note
- * that mark_inode_dirty is not be needed for i_*acl only
- * to force i_mode info to disk, and should be removed once
- * we use notify_change to update the mode.
- * XXX: is mode setting really needed? Just setting acl's should
- * be enough! VFS should change the i_mode as needed? SHP
- */
- if (inode->i_acl &&
- inode->i_acl != POSIX_ACL_NOT_CACHED)
- posix_acl_release(inode->i_acl);
- if (inode->i_default_acl &&
- inode->i_default_acl != POSIX_ACL_NOT_CACHED)
- posix_acl_release(inode->i_default_acl);
- inode->i_acl = POSIX_ACL_NOT_CACHED;
- inode->i_default_acl = POSIX_ACL_NOT_CACHED;
- inode->i_mode = mode;
- /* inode should already be dirty...but just in case */
- mark_inode_dirty(inode);
- return 0;
-
-#if 0
- /* XXX: The following code is the preferred way to set mode,
- * however, I need to carefully go through possible recursion
- * paths back into presto. See comments in presto_do_setattr.
- */
- {
- int error=0;
- struct super_operations *sops;
- struct iattr iattr;
-
- iattr.ia_mode = mode;
- iattr.ia_valid = ATTR_MODE|ATTR_FORCE;
-
- error = -EPERM;
- sops = filter_c2csops(fset->fset_cache->cache_filter);
- if (!sops &&
- !sops->notify_change) {
- EXIT;
- return error;
- }
-
- error = sops->notify_change(dentry, &iattr);
-
- EXIT;
- return error;
- }
-#endif
-}
-#endif
-
-/* setextattr Interface to cache filesystem */
-int presto_do_set_ext_attr(struct presto_file_set *fset,
- struct dentry *dentry,
- const char *name, void *buffer,
- size_t buffer_len, int flags, mode_t *mode,
- struct lento_vfs_context *info)
-{
- struct rec_info rec;
- struct inode *inode = dentry->d_inode;
- struct inode_operations *iops;
- int error;
- struct presto_version ver;
- void *handle;
- char temp[PRESTO_EXT_ATTR_NAME_MAX+1];
-
- ENTRY;
- error = -EROFS;
- if (IS_RDONLY(inode)) {
- EXIT;
- return -EROFS;
- }
-
- if (IS_IMMUTABLE(inode) || IS_APPEND(inode)) {
- EXIT;
- return -EPERM;
- }
-
- presto_getversion(&ver, inode);
- error = -EPERM;
- /* We need to invoke different filters based on whether
- * this dentry is a regular file, directory or symlink.
- */
- switch (inode->i_mode & S_IFMT) {
- case S_IFLNK: /* symlink */
- iops = filter_c2csiops(fset->fset_cache->cache_filter);
- break;
- case S_IFDIR: /* directory */
- iops = filter_c2cdiops(fset->fset_cache->cache_filter);
- break;
- case S_IFREG:
- default: /* everything else including regular files */
- iops = filter_c2cfiops(fset->fset_cache->cache_filter);
- }
-
- if (!iops && !iops->set_ext_attr) {
- EXIT;
- return error;
- }
-
- error = presto_reserve_space(fset->fset_cache, PRESTO_REQHIGH);
- if (error) {
- EXIT;
- return error;
- }
-
-
- handle = presto_trans_start(fset,dentry->d_inode,KML_OPCODE_SETEXTATTR);
- if ( IS_ERR(handle) ) {
- CERROR("presto_do_set_ext_attr: no space for transaction\n");
- presto_release_space(fset->fset_cache, PRESTO_REQHIGH);
- return -ENOSPC;
- }
-
- /* We first "truncate" name to the maximum allowable in presto */
- /* This simulates the strncpy_from_use code in fs/ext_attr.c */
- strlcpy(temp,name,sizeof(temp));
-
- /* Pass down to cache*/
- error = iops->set_ext_attr(inode,temp,buffer,buffer_len,flags);
- if (error) {
- EXIT;
- goto exit;
- }
-
-#if 0 /* was a broken check for Posix ACLs */
- /* Reset mode if specified*/
- /* XXX: when we do native acl support, move this code out! */
- if (mode != NULL) {
- error = presto_setmode(fset, dentry, *mode);
- if (error) {
- EXIT;
- goto exit;
- }
- }
-#endif
-
- /* Reset ctime. Only inode change time (ctime) is affected */
- error = presto_settime(fset, NULL, NULL, dentry, info, ATTR_CTIME);
- if (error) {
- EXIT;
- goto exit;
- }
-
- if (flags & EXT_ATTR_FLAG_USER) {
- CERROR(" USER flag passed to presto_do_set_ext_attr!\n");
- BUG();
- }
-
- /* We are here, so set_ext_attr succeeded. We no longer need to keep
- * track of EXT_ATTR_FLAG_{EXISTS,CREATE}, instead, we will force
- * the attribute value during log replay. -SHP
- */
- flags &= ~(EXT_ATTR_FLAG_EXISTS | EXT_ATTR_FLAG_CREATE);
-
- presto_debug_fail_blkdev(fset, KML_OPCODE_SETEXTATTR | 0x10);
- if ( presto_do_kml(info, dentry) )
- error = presto_journal_set_ext_attr
- (&rec, fset, dentry, &ver, name, buffer,
- buffer_len, flags);
-
- presto_debug_fail_blkdev(fset, KML_OPCODE_SETEXTATTR | 0x20);
- if ( presto_do_rcvd(info, dentry) )
- error = presto_write_last_rcvd(&rec, fset, info);
-
- presto_debug_fail_blkdev(fset, KML_OPCODE_SETEXTATTR | 0x30);
- EXIT;
-exit:
- presto_release_space(fset->fset_cache, PRESTO_REQHIGH);
- presto_trans_commit(fset, handle);
-
- return error;
-}
-#endif
+++ /dev/null
-#
-# relayfs Makefile
-#
-
-obj-$(CONFIG_RELAYFS_FS) += relayfs.o
-
-relayfs-y := relay.o relay_lockless.o relay_locking.o inode.o resize.o
-relayfs-$(CONFIG_KLOG_CHANNEL) += klog.o
+++ /dev/null
-/*
- * VFS-related code for RelayFS, a high-speed data relay filesystem.
- *
- * Copyright (C) 2003 - Tom Zanussi <zanussi@us.ibm.com>, IBM Corp
- * Copyright (C) 2003 - Karim Yaghmour <karim@opersys.com>
- *
- * Based on ramfs, Copyright (C) 2002 - Linus Torvalds
- *
- * This file is released under the GPL.
- */
-
-#include <linux/module.h>
-#include <linux/fs.h>
-#include <linux/mount.h>
-#include <linux/pagemap.h>
-#include <linux/highmem.h>
-#include <linux/init.h>
-#include <linux/string.h>
-#include <linux/smp_lock.h>
-#include <linux/backing-dev.h>
-#include <linux/namei.h>
-#include <linux/poll.h>
-#include <asm/uaccess.h>
-#include <asm/relay.h>
-
-#define RELAYFS_MAGIC 0x26F82121
-
-static struct super_operations relayfs_ops;
-static struct address_space_operations relayfs_aops;
-static struct inode_operations relayfs_file_inode_operations;
-static struct file_operations relayfs_file_operations;
-static struct inode_operations relayfs_dir_inode_operations;
-
-static struct vfsmount * relayfs_mount;
-static int relayfs_mount_count;
-
-static struct backing_dev_info relayfs_backing_dev_info = {
- .ra_pages = 0, /* No readahead */
- .memory_backed = 1, /* Does not contribute to dirty memory */
-};
-
-static struct inode *
-relayfs_get_inode(struct super_block *sb, int mode, dev_t dev)
-{
- struct inode * inode;
-
- inode = new_inode(sb);
-
- if (inode) {
- inode->i_mode = mode;
- inode->i_uid = current->fsuid;
- inode->i_gid = current->fsgid;
- inode->i_blksize = PAGE_CACHE_SIZE;
- inode->i_blocks = 0;
- inode->i_mapping->a_ops = &relayfs_aops;
- inode->i_mapping->backing_dev_info = &relayfs_backing_dev_info;
- inode->i_atime = inode->i_mtime = inode->i_ctime = CURRENT_TIME;
- switch (mode & S_IFMT) {
- default:
- init_special_inode(inode, mode, dev);
- break;
- case S_IFREG:
- inode->i_op = &relayfs_file_inode_operations;
- inode->i_fop = &relayfs_file_operations;
- break;
- case S_IFDIR:
- inode->i_op = &relayfs_dir_inode_operations;
- inode->i_fop = &simple_dir_operations;
-
- /* directory inodes start off with i_nlink == 2 (for "." entry) */
- inode->i_nlink++;
- break;
- case S_IFLNK:
- inode->i_op = &page_symlink_inode_operations;
- break;
- }
- }
- return inode;
-}
-
-/*
- * File creation. Allocate an inode, and we're done..
- */
-/* SMP-safe */
-static int
-relayfs_mknod(struct inode *dir, struct dentry *dentry, int mode, dev_t dev)
-{
- struct inode * inode;
- int error = -ENOSPC;
-
- inode = relayfs_get_inode(dir->i_sb, mode, dev);
-
- if (inode) {
- d_instantiate(dentry, inode);
- dget(dentry); /* Extra count - pin the dentry in core */
- error = 0;
- }
- return error;
-}
-
-static int
-relayfs_mkdir(struct inode * dir, struct dentry * dentry, int mode)
-{
- int retval;
-
- retval = relayfs_mknod(dir, dentry, mode | S_IFDIR, 0);
-
- if (!retval)
- dir->i_nlink++;
- return retval;
-}
-
-static int
-relayfs_create(struct inode *dir, struct dentry *dentry, int mode, struct nameidata *nd)
-{
- return relayfs_mknod(dir, dentry, mode | S_IFREG, 0);
-}
-
-static int
-relayfs_symlink(struct inode * dir, struct dentry *dentry, const char * symname)
-{
- struct inode *inode;
- int error = -ENOSPC;
-
- inode = relayfs_get_inode(dir->i_sb, S_IFLNK|S_IRWXUGO, 0);
-
- if (inode) {
- int l = strlen(symname)+1;
- error = page_symlink(inode, symname, l);
- if (!error) {
- d_instantiate(dentry, inode);
- dget(dentry);
- } else
- iput(inode);
- }
- return error;
-}
-
-/**
- * relayfs_create_entry - create a relayfs directory or file
- * @name: the name of the file to create
- * @parent: parent directory
- * @dentry: result dentry
- * @entry_type: type of file to create (S_IFREG, S_IFDIR)
- * @mode: mode
- * @data: data to associate with the file
- *
- * Creates a file or directory with the specifed permissions.
- */
-static int
-relayfs_create_entry(const char * name, struct dentry * parent, struct dentry **dentry, int entry_type, int mode, void * data)
-{
- struct qstr qname;
- struct dentry * d;
-
- int error = 0;
-
- error = simple_pin_fs("relayfs", &relayfs_mount, &relayfs_mount_count);
- if (error) {
- printk(KERN_ERR "Couldn't mount relayfs: errcode %d\n", error);
- return error;
- }
-
- qname.name = name;
- qname.len = strlen(name);
- qname.hash = full_name_hash(name, qname.len);
-
- if (parent == NULL)
- if (relayfs_mount && relayfs_mount->mnt_sb)
- parent = relayfs_mount->mnt_sb->s_root;
-
- if (parent == NULL) {
- simple_release_fs(&relayfs_mount, &relayfs_mount_count);
- return -EINVAL;
- }
-
- parent = dget(parent);
- down(&parent->d_inode->i_sem);
- d = lookup_hash(&qname, parent);
- if (IS_ERR(d)) {
- error = PTR_ERR(d);
- goto release_mount;
- }
-
- if (d->d_inode) {
- error = -EEXIST;
- goto release_mount;
- }
-
- if (entry_type == S_IFREG)
- error = relayfs_create(parent->d_inode, d, entry_type | mode, NULL);
- else
- error = relayfs_mkdir(parent->d_inode, d, entry_type | mode);
- if (error)
- goto release_mount;
-
- if ((entry_type == S_IFREG) && data) {
- d->d_inode->u.generic_ip = data;
- goto exit; /* don't release mount for regular files */
- }
-
-release_mount:
- simple_release_fs(&relayfs_mount, &relayfs_mount_count);
-exit:
- *dentry = d;
- up(&parent->d_inode->i_sem);
- dput(parent);
-
- return error;
-}
-
-/**
- * relayfs_create_file - create a file in the relay filesystem
- * @name: the name of the file to create
- * @parent: parent directory
- * @dentry: result dentry
- * @data: data to associate with the file
- * @mode: mode, if not specied the default perms are used
- *
- * The file will be created user rw on behalf of current user.
- */
-int
-relayfs_create_file(const char * name, struct dentry * parent, struct dentry **dentry, void * data, int mode)
-{
- if (!mode)
- mode = S_IRUSR | S_IWUSR;
-
- return relayfs_create_entry(name, parent, dentry, S_IFREG,
- mode, data);
-}
-
-/**
- * relayfs_create_dir - create a directory in the relay filesystem
- * @name: the name of the directory to create
- * @parent: parent directory
- * @dentry: result dentry
- *
- * The directory will be created world rwx on behalf of current user.
- */
-int
-relayfs_create_dir(const char * name, struct dentry * parent, struct dentry **dentry)
-{
- return relayfs_create_entry(name, parent, dentry, S_IFDIR,
- S_IRWXU | S_IRUGO | S_IXUGO, NULL);
-}
-
-/**
- * relayfs_remove_file - remove a file in the relay filesystem
- * @dentry: file dentry
- *
- * Remove a file previously created by relayfs_create_file.
- */
-int
-relayfs_remove_file(struct dentry *dentry)
-{
- struct dentry *parent;
- int is_reg;
-
- parent = dentry->d_parent;
- if (parent == NULL)
- return -EINVAL;
-
- is_reg = S_ISREG(dentry->d_inode->i_mode);
-
- parent = dget(parent);
- down(&parent->d_inode->i_sem);
- if (dentry->d_inode) {
- simple_unlink(parent->d_inode, dentry);
- d_delete(dentry);
- }
- dput(dentry);
- up(&parent->d_inode->i_sem);
- dput(parent);
-
- if(is_reg)
- simple_release_fs(&relayfs_mount, &relayfs_mount_count);
-
- return 0;
-}
-
-/**
- * relayfs_open - open file op for relayfs files
- * @inode: the inode
- * @filp: the file
- *
- * Associates the channel with the file, and increments the
- * channel refcount. Reads will be 'auto-consuming'.
- */
-int
-relayfs_open(struct inode *inode, struct file *filp)
-{
- struct rchan *rchan;
- struct rchan_reader *reader;
- int retval = 0;
-
- if (inode->u.generic_ip) {
- rchan = (struct rchan *)inode->u.generic_ip;
- if (rchan == NULL)
- return -EACCES;
- reader = __add_rchan_reader(rchan, filp, 1, 0);
- if (reader == NULL)
- return -ENOMEM;
- filp->private_data = reader;
- retval = rchan->callbacks->fileop_notify(rchan->id, filp,
- RELAY_FILE_OPEN);
- if (retval == 0)
- /* Inc relay channel refcount for file */
- rchan_get(rchan->id);
- else {
- __remove_rchan_reader(reader);
- retval = -EPERM;
- }
- }
-
- return retval;
-}
-
-/**
- * relayfs_mmap - mmap file op for relayfs files
- * @filp: the file
- * @vma: the vma describing what to map
- *
- * Calls upon relay_mmap_buffer to map the file into user space.
- */
-int
-relayfs_mmap(struct file *filp, struct vm_area_struct *vma)
-{
- struct rchan *rchan;
-
- rchan = ((struct rchan_reader *)filp->private_data)->rchan;
-
- return __relay_mmap_buffer(rchan, vma);
-}
-
-/**
- * relayfs_file_read - read file op for relayfs files
- * @filp: the file
- * @buf: user buf to read into
- * @count: bytes requested
- * @offset: offset into file
- *
- * Reads count bytes from the channel, or as much as is available within
- * the sub-buffer currently being read. Reads are 'auto-consuming'.
- * See relay_read() for details.
- *
- * Returns bytes read on success, 0 or -EAGAIN if nothing available,
- * negative otherwise.
- */
-ssize_t
-relayfs_file_read(struct file *filp, char * buf, size_t count, loff_t *offset)
-{
- size_t read_count;
- struct rchan_reader *reader;
- u32 dummy; /* all VFS readers are auto-consuming */
-
- if (offset != &filp->f_pos) /* pread, seeking not supported */
- return -ESPIPE;
-
- if (count == 0)
- return 0;
-
- reader = (struct rchan_reader *)filp->private_data;
- read_count = relay_read(reader, buf, count,
- filp->f_flags & (O_NDELAY | O_NONBLOCK) ? 0 : 1, &dummy);
-
- return read_count;
-}
-
-/**
- * relayfs_file_write - write file op for relayfs files
- * @filp: the file
- * @buf: user buf to write from
- * @count: bytes to write
- * @offset: offset into file
- *
- * Reserves a slot in the relay buffer and writes count bytes
- * into it. The current limit for a single write is 2 pages
- * worth. The user_deliver() channel callback will be invoked on
- *
- * Returns bytes written on success, 0 or -EAGAIN if nothing available,
- * negative otherwise.
- */
-ssize_t
-relayfs_file_write(struct file *filp, const char *buf, size_t count, loff_t *offset)
-{
- int write_count;
- char * write_buf;
- struct rchan *rchan;
- int err = 0;
- void *wrote_pos;
- struct rchan_reader *reader;
-
- reader = (struct rchan_reader *)filp->private_data;
- if (reader == NULL)
- return -EPERM;
-
- rchan = reader->rchan;
- if (rchan == NULL)
- return -EPERM;
-
- if (count == 0)
- return 0;
-
- /* Change this if need to write more than 2 pages at once */
- if (count > 2 * PAGE_SIZE)
- return -EINVAL;
-
- write_buf = (char *)__get_free_pages(GFP_KERNEL, 1);
- if (write_buf == NULL)
- return -ENOMEM;
-
- if (copy_from_user(write_buf, buf, count))
- return -EFAULT;
-
- if (filp->f_flags & (O_NDELAY | O_NONBLOCK)) {
- write_count = relay_write(rchan->id, write_buf, count, -1, &wrote_pos);
- if (write_count == 0)
- return -EAGAIN;
- } else {
- err = wait_event_interruptible(rchan->write_wait,
- (write_count = relay_write(rchan->id, write_buf, count, -1, &wrote_pos)));
- if (err)
- return err;
- }
-
- free_pages((unsigned long)write_buf, 1);
-
- rchan->callbacks->user_deliver(rchan->id, wrote_pos, write_count);
-
- return write_count;
-}
-
-/**
- * relayfs_ioctl - ioctl file op for relayfs files
- * @inode: the inode
- * @filp: the file
- * @cmd: the command
- * @arg: command arg
- *
- * Passes the specified cmd/arg to the kernel client. arg may be a
- * pointer to user-space data, in which case the kernel client is
- * responsible for copying the data to/from user space appropriately.
- * The kernel client is also responsible for returning a meaningful
- * return value for ioctl calls.
- *
- * Returns result of relay channel callback, -EPERM if unsuccessful.
- */
-int
-relayfs_ioctl(struct inode *inode, struct file *filp, unsigned int cmd, unsigned long arg)
-{
- struct rchan *rchan;
- struct rchan_reader *reader;
-
- reader = (struct rchan_reader *)filp->private_data;
- if (reader == NULL)
- return -EPERM;
-
- rchan = reader->rchan;
- if (rchan == NULL)
- return -EPERM;
-
- return rchan->callbacks->ioctl(rchan->id, cmd, arg);
-}
-
-/**
- * relayfs_poll - poll file op for relayfs files
- * @filp: the file
- * @wait: poll table
- *
- * Poll implemention.
- */
-static unsigned int
-relayfs_poll(struct file *filp, poll_table *wait)
-{
- struct rchan_reader *reader;
- unsigned int mask = 0;
-
- reader = (struct rchan_reader *)filp->private_data;
-
- if (reader->rchan->finalized)
- return POLLERR;
-
- if (filp->f_mode & FMODE_READ) {
- poll_wait(filp, &reader->rchan->read_wait, wait);
- if (!rchan_empty(reader))
- mask |= POLLIN | POLLRDNORM;
- }
-
- if (filp->f_mode & FMODE_WRITE) {
- poll_wait(filp, &reader->rchan->write_wait, wait);
- if (!rchan_full(reader))
- mask |= POLLOUT | POLLWRNORM;
- }
-
- return mask;
-}
-
-/**
- * relayfs_release - release file op for relayfs files
- * @inode: the inode
- * @filp: the file
- *
- * Decrements the channel refcount, as the filesystem is
- * no longer using it.
- */
-int
-relayfs_release(struct inode *inode, struct file *filp)
-{
- struct rchan_reader *reader;
- struct rchan *rchan;
-
- reader = (struct rchan_reader *)filp->private_data;
- if (reader == NULL || reader->rchan == NULL)
- return 0;
- rchan = reader->rchan;
-
- rchan->callbacks->fileop_notify(reader->rchan->id, filp,
- RELAY_FILE_CLOSE);
- __remove_rchan_reader(reader);
- /* The channel is no longer in use as far as this file is concerned */
- rchan_put(rchan);
-
- return 0;
-}
-
-static struct address_space_operations relayfs_aops = {
- .readpage = simple_readpage,
- .prepare_write = simple_prepare_write,
- .commit_write = simple_commit_write
-};
-
-static struct file_operations relayfs_file_operations = {
- .open = relayfs_open,
- .read = relayfs_file_read,
- .write = relayfs_file_write,
- .ioctl = relayfs_ioctl,
- .poll = relayfs_poll,
- .mmap = relayfs_mmap,
- .fsync = simple_sync_file,
- .release = relayfs_release,
-};
-
-static struct inode_operations relayfs_file_inode_operations = {
- .getattr = simple_getattr,
-};
-
-static struct inode_operations relayfs_dir_inode_operations = {
- .create = relayfs_create,
- .lookup = simple_lookup,
- .link = simple_link,
- .unlink = simple_unlink,
- .symlink = relayfs_symlink,
- .mkdir = relayfs_mkdir,
- .rmdir = simple_rmdir,
- .mknod = relayfs_mknod,
- .rename = simple_rename,
-};
-
-static struct super_operations relayfs_ops = {
- .statfs = simple_statfs,
- .drop_inode = generic_delete_inode,
-};
-
-static int
-relayfs_fill_super(struct super_block * sb, void * data, int silent)
-{
- struct inode * inode;
- struct dentry * root;
-
- sb->s_blocksize = PAGE_CACHE_SIZE;
- sb->s_blocksize_bits = PAGE_CACHE_SHIFT;
- sb->s_magic = RELAYFS_MAGIC;
- sb->s_op = &relayfs_ops;
- inode = relayfs_get_inode(sb, S_IFDIR | 0755, 0);
-
- if (!inode)
- return -ENOMEM;
-
- root = d_alloc_root(inode);
- if (!root) {
- iput(inode);
- return -ENOMEM;
- }
- sb->s_root = root;
-
- return 0;
-}
-
-static struct super_block *
-relayfs_get_sb(struct file_system_type *fs_type,
- int flags, const char *dev_name, void *data)
-{
- return get_sb_single(fs_type, flags, data, relayfs_fill_super);
-}
-
-static struct file_system_type relayfs_fs_type = {
- .owner = THIS_MODULE,
- .name = "relayfs",
- .get_sb = relayfs_get_sb,
- .kill_sb = kill_litter_super,
-};
-
-static int __init
-init_relayfs_fs(void)
-{
- int err = register_filesystem(&relayfs_fs_type);
-#ifdef CONFIG_KLOG_CHANNEL
- if (!err)
- create_klog_channel();
-#endif
- return err;
-}
-
-static void __exit
-exit_relayfs_fs(void)
-{
-#ifdef CONFIG_KLOG_CHANNEL
- remove_klog_channel();
-#endif
- unregister_filesystem(&relayfs_fs_type);
-}
-
-module_init(init_relayfs_fs)
-module_exit(exit_relayfs_fs)
-
-MODULE_AUTHOR("Tom Zanussi <zanussi@us.ibm.com> and Karim Yaghmour <karim@opersys.com>");
-MODULE_DESCRIPTION("Relay Filesystem");
-MODULE_LICENSE("GPL");
-
+++ /dev/null
-/*
- * KLOG Generic Logging facility built upon the relayfs infrastructure
- *
- * Authors: Hubertus Franke (frankeh@us.ibm.com)
- * Tom Zanussi (zanussi@us.ibm.com)
- *
- * Please direct all questions/comments to zanussi@us.ibm.com
- *
- * Copyright (C) 2003, IBM Corp
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- */
-
-#include <linux/kernel.h>
-#include <linux/smp_lock.h>
-#include <linux/console.h>
-#include <linux/init.h>
-#include <linux/module.h>
-#include <linux/config.h>
-#include <linux/delay.h>
-#include <linux/smp.h>
-#include <linux/sysctl.h>
-#include <linux/relayfs_fs.h>
-#include <linux/klog.h>
-
-/* klog channel id */
-static int klog_channel = -1;
-
-/* maximum size of klog formatting buffer beyond which truncation will occur */
-#define KLOG_BUF_SIZE (512)
-/* per-cpu klog formatting buffer */
-static char buf[NR_CPUS][KLOG_BUF_SIZE];
-
-/*
- * klog_enabled determines whether klog()/klog_raw() actually do write
- * to the klog channel at any given time. If klog_enabled == 1 they do,
- * otherwise they don't. Settable using sysctl fs.relayfs.klog_enabled.
- */
-#ifdef CONFIG_KLOG_CHANNEL_AUTOENABLE
-static int klog_enabled = 1;
-#else
-static int klog_enabled = 0;
-#endif
-
-/**
- * klog - write a formatted string into the klog channel
- * @fmt: format string
- *
- * Returns number of bytes written, negative number on failure.
- */
-int klog(const char *fmt, ...)
-{
- va_list args;
- int len, err;
- char *cbuf;
- unsigned long flags;
-
- if (!klog_enabled || klog_channel < 0)
- return 0;
-
- local_irq_save(flags);
- cbuf = buf[smp_processor_id()];
-
- va_start(args, fmt);
- len = vsnprintf(cbuf, KLOG_BUF_SIZE, fmt, args);
- va_end(args);
-
- err = relay_write(klog_channel, cbuf, len, -1, NULL);
- local_irq_restore(flags);
-
- return err;
-}
-
-/**
- * klog_raw - directly write into the klog channel
- * @buf: buffer containing data to write
- * @len: # bytes to write
- *
- * Returns number of bytes written, negative number on failure.
- */
-int klog_raw(const char *buf,int len)
-{
- int err = 0;
-
- if (klog_enabled && klog_channel >= 0)
- err = relay_write(klog_channel, buf, len, -1, NULL);
-
- return err;
-}
-
-/**
- * relayfs sysctl data
- *
- * Only sys/fs/relayfs/klog_enabled for now.
- */
-#define CTL_ENABLE_KLOG 100
-#define CTL_RELAYFS 100
-
-static struct ctl_table_header *relayfs_ctl_table_header;
-
-static struct ctl_table relayfs_table[] =
-{
- {
- .ctl_name = CTL_ENABLE_KLOG,
- .procname = "klog_enabled",
- .data = &klog_enabled,
- .maxlen = sizeof(int),
- .mode = 0644,
- .proc_handler = &proc_dointvec,
- },
- {
- 0
- }
-};
-
-static struct ctl_table relayfs_dir_table[] =
-{
- {
- .ctl_name = CTL_RELAYFS,
- .procname = "relayfs",
- .data = NULL,
- .maxlen = 0,
- .mode = 0555,
- .child = relayfs_table,
- },
- {
- 0
- }
-};
-
-static struct ctl_table relayfs_root_table[] =
-{
- {
- .ctl_name = CTL_FS,
- .procname = "fs",
- .data = NULL,
- .maxlen = 0,
- .mode = 0555,
- .child = relayfs_dir_table,
- },
- {
- 0
- }
-};
-
-/**
- * create_klog_channel - creates channel /mnt/relay/klog
- *
- * Returns channel id on success, negative otherwise.
- */
-int
-create_klog_channel(void)
-{
- u32 bufsize, nbufs;
- u32 channel_flags;
-
- channel_flags = RELAY_DELIVERY_PACKET | RELAY_USAGE_GLOBAL;
- channel_flags |= RELAY_SCHEME_ANY | RELAY_TIMESTAMP_ANY;
-
- bufsize = 1 << (CONFIG_KLOG_CHANNEL_SHIFT - 2);
- nbufs = 4;
-
- klog_channel = relay_open("klog",
- bufsize,
- nbufs,
- channel_flags,
- NULL,
- 0,
- 0,
- 0,
- 0,
- 0,
- 0,
- NULL,
- 0);
-
- if (klog_channel < 0)
- printk("klog channel creation failed, errcode: %d\n", klog_channel);
- else {
- printk("klog channel created (%u bytes)\n", 1 << CONFIG_KLOG_CHANNEL_SHIFT);
- relayfs_ctl_table_header = register_sysctl_table(relayfs_root_table, 1);
- }
-
- return klog_channel;
-}
-
-/**
- * remove_klog_channel - destroys channel /mnt/relay/klog
- *
- * Returns 0, negative otherwise.
- */
-int
-remove_klog_channel(void)
-{
- if (relayfs_ctl_table_header)
- unregister_sysctl_table(relayfs_ctl_table_header);
-
- return relay_close(klog_channel);
-}
-
-EXPORT_SYMBOL(klog);
-EXPORT_SYMBOL(klog_raw);
-
+++ /dev/null
-/*
- * Public API and common code for RelayFS.
- *
- * Please see Documentation/filesystems/relayfs.txt for API description.
- *
- * Copyright (C) 2002, 2003 - Tom Zanussi (zanussi@us.ibm.com), IBM Corp
- * Copyright (C) 1999, 2000, 2001, 2002 - Karim Yaghmour (karim@opersys.com)
- *
- * This file is released under the GPL.
- */
-
-#include <linux/init.h>
-#include <linux/errno.h>
-#include <linux/stddef.h>
-#include <linux/slab.h>
-#include <linux/module.h>
-#include <linux/sched.h>
-#include <linux/string.h>
-#include <linux/time.h>
-#include <linux/page-flags.h>
-#include <linux/vmalloc.h>
-#include <linux/mm.h>
-#include <linux/mman.h>
-#include <linux/delay.h>
-
-#include <asm/io.h>
-#include <asm/current.h>
-#include <asm/uaccess.h>
-#include <asm/bitops.h>
-#include <asm/pgtable.h>
-#include <asm/relay.h>
-#include <asm/hardirq.h>
-
-#include "relay_lockless.h"
-#include "relay_locking.h"
-#include "resize.h"
-
-/* Relay channel table, indexed by channel id */
-static struct rchan * rchan_table[RELAY_MAX_CHANNELS];
-static rwlock_t rchan_table_lock = RW_LOCK_UNLOCKED;
-
-/* Relay operation structs, one per scheme */
-static struct relay_ops lockless_ops = {
- .reserve = lockless_reserve,
- .commit = lockless_commit,
- .get_offset = lockless_get_offset,
- .finalize = lockless_finalize,
- .reset = lockless_reset,
- .reset_index = lockless_reset_index
-};
-
-static struct relay_ops locking_ops = {
- .reserve = locking_reserve,
- .commit = locking_commit,
- .get_offset = locking_get_offset,
- .finalize = locking_finalize,
- .reset = locking_reset,
- .reset_index = locking_reset_index
-};
-
-/*
- * Low-level relayfs kernel API. These functions should not normally be
- * used by clients. See high-level kernel API below.
- */
-
-/**
- * rchan_get - get channel associated with id, incrementing refcount
- * @rchan_id: the channel id
- *
- * Returns channel if successful, NULL otherwise.
- */
-struct rchan *
-rchan_get(int rchan_id)
-{
- struct rchan *rchan;
-
- if ((rchan_id < 0) || (rchan_id >= RELAY_MAX_CHANNELS))
- return NULL;
-
- read_lock(&rchan_table_lock);
- rchan = rchan_table[rchan_id];
- if (rchan)
- atomic_inc(&rchan->refcount);
- read_unlock(&rchan_table_lock);
-
- return rchan;
-}
-
-/**
- * clear_readers - clear non-VFS readers
- * @rchan: the channel
- *
- * Clear the channel pointers of all non-VFS readers open on the channel.
- */
-static inline void
-clear_readers(struct rchan *rchan)
-{
- struct list_head *p;
- struct rchan_reader *reader;
-
- read_lock(&rchan->open_readers_lock);
- list_for_each(p, &rchan->open_readers) {
- reader = list_entry(p, struct rchan_reader, list);
- if (!reader->vfs_reader)
- reader->rchan = NULL;
- }
- read_unlock(&rchan->open_readers_lock);
-}
-
-/**
- * rchan_alloc_id - reserve a channel id and store associated channel
- * @rchan: the channel
- *
- * Returns channel id if successful, -1 otherwise.
- */
-static inline int
-rchan_alloc_id(struct rchan *rchan)
-{
- int i;
- int rchan_id = -1;
-
- if (rchan == NULL)
- return -1;
-
- write_lock(&rchan_table_lock);
- for (i = 0; i < RELAY_MAX_CHANNELS; i++) {
- if (rchan_table[i] == NULL) {
- rchan_table[i] = rchan;
- rchan_id = rchan->id = i;
- break;
- }
- }
- if (rchan_id != -1)
- atomic_inc(&rchan->refcount);
- write_unlock(&rchan_table_lock);
-
- return rchan_id;
-}
-
-/**
- * rchan_free_id - revoke a channel id and remove associated channel
- * @rchan_id: the channel id
- */
-static inline void
-rchan_free_id(int rchan_id)
-{
- struct rchan *rchan;
-
- if ((rchan_id < 0) || (rchan_id >= RELAY_MAX_CHANNELS))
- return;
-
- write_lock(&rchan_table_lock);
- rchan = rchan_table[rchan_id];
- rchan_table[rchan_id] = NULL;
- write_unlock(&rchan_table_lock);
-}
-
-/**
- * rchan_destroy_buf - destroy the current channel buffer
- * @rchan: the channel
- */
-static inline void
-rchan_destroy_buf(struct rchan *rchan)
-{
- if (rchan->buf && !rchan->init_buf)
- free_rchan_buf(rchan->buf,
- rchan->buf_page_array,
- rchan->buf_page_count);
-}
-
-/**
- * relay_release - perform end-of-buffer processing for last buffer
- * @rchan: the channel
- *
- * Returns 0 if successful, negative otherwise.
- *
- * Releases the channel buffer, destroys the channel, and removes the
- * relay file from the relayfs filesystem. Should only be called from
- * rchan_put(). If we're here, it means by definition refcount is 0.
- */
-static int
-relay_release(struct rchan *rchan)
-{
- if (rchan == NULL)
- return -EBADF;
-
- rchan_destroy_buf(rchan);
- rchan_free_id(rchan->id);
- relayfs_remove_file(rchan->dentry);
- clear_readers(rchan);
- kfree(rchan);
-
- return 0;
-}
-
-/**
- * rchan_get - decrement channel refcount, releasing it if 0
- * @rchan: the channel
- *
- * If the refcount reaches 0, the channel will be destroyed.
- */
-void
-rchan_put(struct rchan *rchan)
-{
- if (atomic_dec_and_test(&rchan->refcount))
- relay_release(rchan);
-}
-
-/**
- * relay_reserve - reserve a slot in the channel buffer
- * @rchan: the channel
- * @len: the length of the slot to reserve
- * @td: the time delta between buffer start and current write, or TSC
- * @err: receives the result flags
- * @interrupting: 1 if interrupting previous, used only in locking scheme
- *
- * Returns pointer to the beginning of the reserved slot, NULL if error.
- *
- * The errcode value contains the result flags and is an ORed combination
- * of the following:
- *
- * RELAY_BUFFER_SWITCH_NONE - no buffer switch occurred
- * RELAY_EVENT_DISCARD_NONE - event should not be discarded
- * RELAY_BUFFER_SWITCH - buffer switch occurred
- * RELAY_EVENT_DISCARD - event should be discarded (all buffers are full)
- * RELAY_EVENT_TOO_LONG - event won't fit into even an empty buffer
- *
- * buffer_start and buffer_end callbacks are triggered at this point
- * if applicable.
- */
-char *
-relay_reserve(struct rchan *rchan,
- u32 len,
- struct timeval *ts,
- u32 *td,
- int *err,
- int *interrupting)
-{
- if (rchan == NULL)
- return NULL;
-
- *interrupting = 0;
-
- return rchan->relay_ops->reserve(rchan, len, ts, td, err, interrupting);
-}
-
-
-/**
- * wakeup_readers - wake up VFS readers waiting on a channel
- * @private: the channel
- *
- * This is the work function used to defer reader waking. The
- * reason waking is deferred is that calling directly from commit
- * causes problems if you're writing from say the scheduler.
- */
-static void
-wakeup_readers(void *private)
-{
- struct rchan *rchan = (struct rchan *)private;
-
- wake_up_interruptible(&rchan->read_wait);
-}
-
-
-/**
- * relay_commit - commit a reserved slot in the buffer
- * @rchan: the channel
- * @from: commit the length starting here
- * @len: length committed
- * @interrupting: 1 if interrupting previous, used only in locking scheme
- *
- * After the write into the reserved buffer has been complted, this
- * function must be called in order for the relay to determine whether
- * buffers are complete and to wake up VFS readers.
- *
- * delivery callback is triggered at this point if applicable.
- */
-void
-relay_commit(struct rchan *rchan,
- char *from,
- u32 len,
- int reserve_code,
- int interrupting)
-{
- int deliver;
-
- if (rchan == NULL)
- return;
-
- deliver = packet_delivery(rchan) ||
- (reserve_code & RELAY_BUFFER_SWITCH);
-
- rchan->relay_ops->commit(rchan, from, len, deliver, interrupting);
-
- /* The params are always the same, so no worry about re-queuing */
- if (deliver && waitqueue_active(&rchan->read_wait)) {
- PREPARE_WORK(&rchan->wake_readers, wakeup_readers, rchan);
- schedule_delayed_work(&rchan->wake_readers, 1);
- }
-}
-
-/**
- * relay_get_offset - get current and max channel buffer offsets
- * @rchan: the channel
- * @max_offset: maximum channel offset
- *
- * Returns the current and maximum channel buffer offsets.
- */
-u32
-relay_get_offset(struct rchan *rchan, u32 *max_offset)
-{
- return rchan->relay_ops->get_offset(rchan, max_offset);
-}
-
-/**
- * reset_index - try once to reset the current channel index
- * @rchan: the channel
- * @old_index: the index read before reset
- *
- * Attempts to reset the channel index to 0. It tries once, and
- * if it fails, returns negative, 0 otherwise.
- */
-int
-reset_index(struct rchan *rchan, u32 old_index)
-{
- return rchan->relay_ops->reset_index(rchan, old_index);
-}
-
-/*
- * close() vm_op implementation for relayfs file mapping.
- */
-static void
-relay_file_mmap_close(struct vm_area_struct *vma)
-{
- struct file *filp = vma->vm_file;
- struct rchan_reader *reader;
- struct rchan *rchan;
-
- reader = (struct rchan_reader *)filp->private_data;
- rchan = reader->rchan;
-
- atomic_dec(&rchan->mapped);
-
- rchan->callbacks->fileop_notify(reader->rchan->id, filp,
- RELAY_FILE_UNMAP);
-}
-
-/*
- * vm_ops for relay file mappings.
- */
-static struct vm_operations_struct relay_file_mmap_ops = {
- .close = relay_file_mmap_close
-};
-
-/* \begin{Code inspired from BTTV driver} */
-static inline unsigned long
-kvirt_to_pa(unsigned long adr)
-{
- unsigned long kva, ret;
-
- kva = (unsigned long) page_address(vmalloc_to_page((void *) adr));
- kva |= adr & (PAGE_SIZE - 1);
- ret = __pa(kva);
- return ret;
-}
-
-static int
-relay_mmap_region(struct vm_area_struct *vma,
- const char *adr,
- const char *start_pos,
- unsigned long size)
-{
- unsigned long start = (unsigned long) adr;
- unsigned long page, pos;
-
- pos = (unsigned long) start_pos;
-
- while (size > 0) {
- page = kvirt_to_pa(pos);
- if (remap_page_range(vma, start, page, PAGE_SIZE, PAGE_SHARED))
- return -EAGAIN;
- start += PAGE_SIZE;
- pos += PAGE_SIZE;
- size -= PAGE_SIZE;
- }
-
- return 0;
-}
-/* \end{Code inspired from BTTV driver} */
-
-/**
- * relay_mmap_buffer: - mmap buffer to process address space
- * @rchan_id: relay channel id
- * @vma: vm_area_struct describing memory to be mapped
- *
- * Returns:
- * 0 if ok
- * -EAGAIN, when remap failed
- * -EINVAL, invalid requested length
- *
- * Caller should already have grabbed mmap_sem.
- */
-int
-__relay_mmap_buffer(struct rchan *rchan,
- struct vm_area_struct *vma)
-{
- int err = 0;
- unsigned long length = vma->vm_end - vma->vm_start;
- struct file *filp = vma->vm_file;
-
- if (rchan == NULL) {
- err = -EBADF;
- goto exit;
- }
-
- if (rchan->init_buf) {
- err = -EPERM;
- goto exit;
- }
-
- if (length != (unsigned long)rchan->alloc_size) {
- err = -EINVAL;
- goto exit;
- }
-
- err = relay_mmap_region(vma,
- (char *)vma->vm_start,
- rchan->buf,
- rchan->alloc_size);
-
- if (err == 0) {
- vma->vm_ops = &relay_file_mmap_ops;
- err = rchan->callbacks->fileop_notify(rchan->id, filp,
- RELAY_FILE_MAP);
- if (err == 0)
- atomic_inc(&rchan->mapped);
- }
-exit:
- return err;
-}
-
-/*
- * High-level relayfs kernel API. See Documentation/filesystems/relafys.txt.
- */
-
-/*
- * rchan_callback implementations defining default channel behavior. Used
- * in place of corresponding NULL values in client callback struct.
- */
-
-/*
- * buffer_end() default callback. Does nothing.
- */
-static int
-buffer_end_default_callback(int rchan_id,
- char *current_write_pos,
- char *end_of_buffer,
- struct timeval end_time,
- u32 end_tsc,
- int using_tsc)
-{
- return 0;
-}
-
-/*
- * buffer_start() default callback. Does nothing.
- */
-static int
-buffer_start_default_callback(int rchan_id,
- char *current_write_pos,
- u32 buffer_id,
- struct timeval start_time,
- u32 start_tsc,
- int using_tsc)
-{
- return 0;
-}
-
-/*
- * deliver() default callback. Does nothing.
- */
-static void
-deliver_default_callback(int rchan_id, char *from, u32 len)
-{
-}
-
-/*
- * user_deliver() default callback. Does nothing.
- */
-static void
-user_deliver_default_callback(int rchan_id, char *from, u32 len)
-{
-}
-
-/*
- * needs_resize() default callback. Does nothing.
- */
-static void
-needs_resize_default_callback(int rchan_id,
- int resize_type,
- u32 suggested_buf_size,
- u32 suggested_n_bufs)
-{
-}
-
-/*
- * fileop_notify() default callback. Does nothing.
- */
-static int
-fileop_notify_default_callback(int rchan_id,
- struct file *filp,
- enum relay_fileop fileop)
-{
- return 0;
-}
-
-/*
- * ioctl() default callback. Does nothing.
- */
-static int
-ioctl_default_callback(int rchan_id,
- unsigned int cmd,
- unsigned long arg)
-{
- return 0;
-}
-
-/* relay channel default callbacks */
-static struct rchan_callbacks default_channel_callbacks = {
- .buffer_start = buffer_start_default_callback,
- .buffer_end = buffer_end_default_callback,
- .deliver = deliver_default_callback,
- .user_deliver = user_deliver_default_callback,
- .needs_resize = needs_resize_default_callback,
- .fileop_notify = fileop_notify_default_callback,
- .ioctl = ioctl_default_callback,
-};
-
-/**
- * check_attribute_flags - check sanity of channel attributes
- * @flags: channel attributes
- * @resizeable: 1 if true
- *
- * Returns 0 if successful, negative otherwise.
- */
-static int
-check_attribute_flags(u32 *attribute_flags, int resizeable)
-{
- u32 flags = *attribute_flags;
-
- if (!(flags & RELAY_DELIVERY_BULK) && !(flags & RELAY_DELIVERY_PACKET))
- return -EINVAL; /* Delivery mode must be specified */
-
- if (!(flags & RELAY_USAGE_SMP) && !(flags & RELAY_USAGE_GLOBAL))
- return -EINVAL; /* Usage must be specified */
-
- if (resizeable) { /* Resizeable can never be continuous */
- *attribute_flags &= ~RELAY_MODE_CONTINUOUS;
- *attribute_flags |= RELAY_MODE_NO_OVERWRITE;
- }
-
- if ((flags & RELAY_MODE_CONTINUOUS) &&
- (flags & RELAY_MODE_NO_OVERWRITE))
- return -EINVAL; /* Can't have it both ways */
-
- if (!(flags & RELAY_MODE_CONTINUOUS) &&
- !(flags & RELAY_MODE_NO_OVERWRITE))
- *attribute_flags |= RELAY_MODE_CONTINUOUS; /* Default to continuous */
-
- if (!(flags & RELAY_SCHEME_ANY))
- return -EINVAL; /* One or both must be specified */
- else if (flags & RELAY_SCHEME_LOCKLESS) {
- if (have_cmpxchg())
- *attribute_flags &= ~RELAY_SCHEME_LOCKING;
- else if (flags & RELAY_SCHEME_LOCKING)
- *attribute_flags &= ~RELAY_SCHEME_LOCKLESS;
- else
- return -EINVAL; /* Locking scheme not an alternative */
- }
-
- if (!(flags & RELAY_TIMESTAMP_ANY))
- return -EINVAL; /* One or both must be specified */
- else if (flags & RELAY_TIMESTAMP_TSC) {
- if (have_tsc())
- *attribute_flags &= ~RELAY_TIMESTAMP_GETTIMEOFDAY;
- else if (flags & RELAY_TIMESTAMP_GETTIMEOFDAY)
- *attribute_flags &= ~RELAY_TIMESTAMP_TSC;
- else
- return -EINVAL; /* gettimeofday not an alternative */
- }
-
- return 0;
-}
-
-/*
- * High-level API functions.
- */
-
-/**
- * __relay_reset - internal reset function
- * @rchan: the channel
- * @init: 1 if this is a first-time channel initialization
- *
- * See relay_reset for description of effect.
- */
-void
-__relay_reset(struct rchan *rchan, int init)
-{
- int i;
-
- if (init) {
- rchan->version = RELAYFS_CHANNEL_VERSION;
- init_MUTEX(&rchan->resize_sem);
- init_waitqueue_head(&rchan->read_wait);
- init_waitqueue_head(&rchan->write_wait);
- atomic_set(&rchan->refcount, 0);
- INIT_LIST_HEAD(&rchan->open_readers);
- rchan->open_readers_lock = RW_LOCK_UNLOCKED;
- }
-
- rchan->buf_id = rchan->buf_idx = 0;
- atomic_set(&rchan->suspended, 0);
- atomic_set(&rchan->mapped, 0);
- rchan->half_switch = 0;
- rchan->bufs_produced = 0;
- rchan->bufs_consumed = 0;
- rchan->bytes_consumed = 0;
- rchan->initialized = 0;
- rchan->finalized = 0;
- rchan->resize_min = rchan->resize_max = 0;
- rchan->resizing = 0;
- rchan->replace_buffer = 0;
- rchan->resize_buf = NULL;
- rchan->resize_buf_size = 0;
- rchan->resize_alloc_size = 0;
- rchan->resize_n_bufs = 0;
- rchan->resize_err = 0;
- rchan->resize_failures = 0;
- rchan->resize_order = 0;
-
- rchan->expand_page_array = NULL;
- rchan->expand_page_count = 0;
- rchan->shrink_page_array = NULL;
- rchan->shrink_page_count = 0;
- rchan->resize_page_array = NULL;
- rchan->resize_page_count = 0;
- rchan->old_buf_page_array = NULL;
- rchan->expand_buf_id = 0;
-
- INIT_WORK(&rchan->wake_readers, NULL, NULL);
- INIT_WORK(&rchan->wake_writers, NULL, NULL);
-
- for (i = 0; i < RELAY_MAX_BUFS; i++)
- rchan->unused_bytes[i] = 0;
-
- rchan->relay_ops->reset(rchan, init);
-}
-
-/**
- * relay_reset - reset the channel
- * @rchan: the channel
- *
- * Returns 0 if successful, negative if not.
- *
- * This has the effect of erasing all data from the buffer and
- * restarting the channel in its initial state. The buffer itself
- * is not freed, so any mappings are still in effect.
- *
- * NOTE: Care should be taken that the channnel isn't actually
- * being used by anything when this call is made.
- */
-int
-relay_reset(int rchan_id)
-{
- struct rchan *rchan;
-
- rchan = rchan_get(rchan_id);
- if (rchan == NULL)
- return -EBADF;
-
- __relay_reset(rchan, 0);
- update_readers_consumed(rchan, 0, 0);
-
- rchan_put(rchan);
-
- return 0;
-}
-
-/**
- * check_init_buf - check the sanity of init_buf, if present
- * @init_buf: the initbuf
- * @init_buf_size: the total initbuf size
- * @bufsize: the channel's sub-buffer size
- * @nbufs: the number of sub-buffers in the channel
- *
- * Returns 0 if ok, negative otherwise.
- */
-static int
-check_init_buf(char *init_buf, u32 init_buf_size, u32 bufsize, u32 nbufs)
-{
- int err = 0;
-
- if (init_buf && nbufs == 1) /* 1 sub-buffer makes no sense */
- err = -EINVAL;
-
- if (init_buf && (bufsize * nbufs != init_buf_size))
- err = -EINVAL;
-
- return err;
-}
-
-/**
- * rchan_create_buf - allocate the initial channel buffer
- * @rchan: the channel
- * @size_alloc: the total size of the channel buffer
- *
- * Returns 0 if successful, negative otherwise.
- */
-static inline int
-rchan_create_buf(struct rchan *rchan, int size_alloc)
-{
- struct page **page_array;
- int page_count;
-
- if ((rchan->buf = (char *)alloc_rchan_buf(size_alloc, &page_array, &page_count)) == NULL) {
- rchan->buf_page_array = NULL;
- rchan->buf_page_count = 0;
- return -ENOMEM;
- }
-
- rchan->buf_page_array = page_array;
- rchan->buf_page_count = page_count;
-
- return 0;
-}
-
-/**
- * rchan_create - allocate and initialize a channel, including buffer
- * @chanpath: path specifying the relayfs channel file to create
- * @bufsize: the size of the sub-buffers within the channel buffer
- * @nbufs: the number of sub-buffers within the channel buffer
- * @rchan_flags: flags specifying buffer attributes
- * @err: err code
- *
- * Returns channel if successful, NULL otherwise, err receives errcode.
- *
- * Allocates a struct rchan representing a relay channel, according
- * to the attributes passed in via rchan_flags. Does some basic sanity
- * checking but doesn't try to do anything smart. In particular, the
- * number of buffers must be a power of 2, and if the lockless scheme
- * is being used, the sub-buffer size must also be a power of 2. The
- * locking scheme can use buffers of any size.
- */
-static struct rchan *
-rchan_create(const char *chanpath,
- int bufsize,
- int nbufs,
- u32 rchan_flags,
- char *init_buf,
- u32 init_buf_size,
- int *err)
-{
- int size_alloc;
- struct rchan *rchan = NULL;
-
- *err = 0;
-
- rchan = (struct rchan *)kmalloc(sizeof(struct rchan), GFP_KERNEL);
- if (rchan == NULL) {
- *err = -ENOMEM;
- return NULL;
- }
- rchan->buf = rchan->init_buf = NULL;
-
- *err = check_init_buf(init_buf, init_buf_size, bufsize, nbufs);
- if (*err)
- goto exit;
-
- if (nbufs == 1 && bufsize) {
- rchan->n_bufs = nbufs;
- rchan->buf_size = bufsize;
- size_alloc = bufsize;
- goto alloc;
- }
-
- if (bufsize <= 0 ||
- (rchan_flags & RELAY_SCHEME_LOCKLESS && hweight32(bufsize) != 1) ||
- hweight32(nbufs) != 1 ||
- nbufs < RELAY_MIN_BUFS ||
- nbufs > RELAY_MAX_BUFS) {
- *err = -EINVAL;
- goto exit;
- }
-
- size_alloc = FIX_SIZE(bufsize * nbufs);
- if (size_alloc > RELAY_MAX_BUF_SIZE) {
- *err = -EINVAL;
- goto exit;
- }
- rchan->n_bufs = nbufs;
- rchan->buf_size = bufsize;
-
- if (rchan_flags & RELAY_SCHEME_LOCKLESS) {
- offset_bits(rchan) = ffs(bufsize) - 1;
- offset_mask(rchan) = RELAY_BUF_OFFSET_MASK(offset_bits(rchan));
- bufno_bits(rchan) = ffs(nbufs) - 1;
- }
-alloc:
- if (rchan_alloc_id(rchan) == -1) {
- *err = -ENOMEM;
- goto exit;
- }
-
- if (init_buf == NULL) {
- *err = rchan_create_buf(rchan, size_alloc);
- if (*err) {
- rchan_free_id(rchan->id);
- goto exit;
- }
- } else
- rchan->buf = rchan->init_buf = init_buf;
-
- rchan->alloc_size = size_alloc;
-
- if (rchan_flags & RELAY_SCHEME_LOCKLESS)
- rchan->relay_ops = &lockless_ops;
- else
- rchan->relay_ops = &locking_ops;
-
-exit:
- if (*err) {
- kfree(rchan);
- rchan = NULL;
- }
-
- return rchan;
-}
-
-
-static char tmpname[NAME_MAX];
-
-/**
- * rchan_create_dir - create directory for file
- * @chanpath: path to file, including filename
- * @residual: filename remaining after parse
- * @topdir: the directory filename should be created in
- *
- * Returns 0 if successful, negative otherwise.
- *
- * Inspired by xlate_proc_name() in procfs. Given a file path which
- * includes the filename, creates any and all directories necessary
- * to create the file.
- */
-static int
-rchan_create_dir(const char * chanpath,
- const char **residual,
- struct dentry **topdir)
-{
- const char *cp = chanpath, *next;
- struct dentry *parent = NULL;
- int len, err = 0;
-
- while (1) {
- next = strchr(cp, '/');
- if (!next)
- break;
-
- len = next - cp;
-
- strncpy(tmpname, cp, len);
- tmpname[len] = '\0';
- err = relayfs_create_dir(tmpname, parent, &parent);
- if (err && (err != -EEXIST))
- return err;
- cp += len + 1;
- }
-
- *residual = cp;
- *topdir = parent;
-
- return err;
-}
-
-/**
- * rchan_create_file - create file, including parent directories
- * @chanpath: path to file, including filename
- * @dentry: result dentry
- * @data: data to associate with the file
- *
- * Returns 0 if successful, negative otherwise.
- */
-static int
-rchan_create_file(const char * chanpath,
- struct dentry **dentry,
- struct rchan * data,
- int mode)
-{
- int err;
- const char * fname;
- struct dentry *topdir;
-
- err = rchan_create_dir(chanpath, &fname, &topdir);
- if (err && (err != -EEXIST))
- return err;
-
- err = relayfs_create_file(fname, topdir, dentry, (void *)data, mode);
-
- return err;
-}
-
-/**
- * relay_open - create a new file/channel buffer in relayfs
- * @chanpath: name of file to create, including path
- * @bufsize: size of sub-buffers
- * @nbufs: number of sub-buffers
- * @flags: channel attributes
- * @callbacks: client callback functions
- * @start_reserve: number of bytes to reserve at start of each sub-buffer
- * @end_reserve: number of bytes to reserve at end of each sub-buffer
- * @rchan_start_reserve: additional reserve at start of first sub-buffer
- * @resize_min: minimum total buffer size, if set
- * @resize_max: maximum total buffer size, if set
- * @mode: the perms to be given to the relayfs file, 0 to accept defaults
- * @init_buf: initial memory buffer to start out with, NULL if N/A
- * @init_buf_size: initial memory buffer size to start out with, 0 if N/A
- *
- * Returns channel id if successful, negative otherwise.
- *
- * Creates a relay channel using the sizes and attributes specified.
- * The default permissions, used if mode == 0 are S_IRUSR | S_IWUSR. See
- * Documentation/filesystems/relayfs.txt for details.
- */
-int
-relay_open(const char *chanpath,
- int bufsize,
- int nbufs,
- u32 flags,
- struct rchan_callbacks *channel_callbacks,
- u32 start_reserve,
- u32 end_reserve,
- u32 rchan_start_reserve,
- u32 resize_min,
- u32 resize_max,
- int mode,
- char *init_buf,
- u32 init_buf_size)
-{
- int err;
- struct rchan *rchan;
- struct dentry *dentry;
- struct rchan_callbacks *callbacks = NULL;
-
- if (chanpath == NULL)
- return -EINVAL;
-
- if (nbufs != 1) {
- err = check_attribute_flags(&flags, resize_min ? 1 : 0);
- if (err)
- return err;
- }
-
- rchan = rchan_create(chanpath, bufsize, nbufs, flags, init_buf, init_buf_size, &err);
-
- if (err < 0)
- return err;
-
- /* Create file in fs */
- if ((err = rchan_create_file(chanpath, &dentry, rchan, mode)) < 0) {
- rchan_destroy_buf(rchan);
- rchan_free_id(rchan->id);
- kfree(rchan);
- return err;
- }
-
- rchan->dentry = dentry;
-
- if (channel_callbacks == NULL)
- callbacks = &default_channel_callbacks;
- else
- callbacks = channel_callbacks;
-
- if (callbacks->buffer_end == NULL)
- callbacks->buffer_end = buffer_end_default_callback;
- if (callbacks->buffer_start == NULL)
- callbacks->buffer_start = buffer_start_default_callback;
- if (callbacks->deliver == NULL)
- callbacks->deliver = deliver_default_callback;
- if (callbacks->user_deliver == NULL)
- callbacks->user_deliver = user_deliver_default_callback;
- if (callbacks->needs_resize == NULL)
- callbacks->needs_resize = needs_resize_default_callback;
- if (callbacks->fileop_notify == NULL)
- callbacks->fileop_notify = fileop_notify_default_callback;
- if (callbacks->ioctl == NULL)
- callbacks->ioctl = ioctl_default_callback;
- rchan->callbacks = callbacks;
-
- /* Just to let the client know the sizes used */
- rchan->callbacks->needs_resize(rchan->id,
- RELAY_RESIZE_REPLACED,
- rchan->buf_size,
- rchan->n_bufs);
-
- rchan->flags = flags;
- rchan->start_reserve = start_reserve;
- rchan->end_reserve = end_reserve;
- rchan->rchan_start_reserve = rchan_start_reserve;
-
- __relay_reset(rchan, 1);
-
- if (resize_min > 0 && resize_max > 0 &&
- resize_max < RELAY_MAX_TOTAL_BUF_SIZE) {
- rchan->resize_min = resize_min;
- rchan->resize_max = resize_max;
- init_shrink_timer(rchan);
- }
-
- rchan_get(rchan->id);
-
- return rchan->id;
-}
-
-/**
- * relay_discard_init_buf - alloc channel buffer and copy init_buf into it
- * @rchan_id: the channel id
- *
- * Returns 0 if successful, negative otherwise.
- *
- * NOTE: May sleep. Should also be called only when the channel isn't
- * actively being written into.
- */
-int
-relay_discard_init_buf(int rchan_id)
-{
- struct rchan *rchan;
- int err = 0;
-
- rchan = rchan_get(rchan_id);
- if (rchan == NULL)
- return -EBADF;
-
- if (rchan->init_buf == NULL) {
- err = -EINVAL;
- goto out;
- }
-
- err = rchan_create_buf(rchan, rchan->alloc_size);
- if (err)
- goto out;
-
- memcpy(rchan->buf, rchan->init_buf, rchan->n_bufs * rchan->buf_size);
- rchan->init_buf = NULL;
-out:
- rchan_put(rchan);
-
- return err;
-}
-
-/**
- * relay_finalize - perform end-of-buffer processing for last buffer
- * @rchan_id: the channel id
- * @releasing: true if called when releasing file
- *
- * Returns 0 if successful, negative otherwise.
- */
-static int
-relay_finalize(int rchan_id)
-{
- struct rchan *rchan = rchan_get(rchan_id);
- if (rchan == NULL)
- return -EBADF;
-
- if (rchan->finalized == 0) {
- rchan->relay_ops->finalize(rchan);
- rchan->finalized = 1;
- }
-
- if (waitqueue_active(&rchan->read_wait)) {
- PREPARE_WORK(&rchan->wake_readers, wakeup_readers, rchan);
- schedule_delayed_work(&rchan->wake_readers, 1);
- }
-
- rchan_put(rchan);
-
- return 0;
-}
-
-/**
- * restore_callbacks - restore default channel callbacks
- * @rchan: the channel
- *
- * Restore callbacks to the default versions.
- */
-static inline void
-restore_callbacks(struct rchan *rchan)
-{
- if (rchan->callbacks != &default_channel_callbacks)
- rchan->callbacks = &default_channel_callbacks;
-}
-
-/**
- * relay_close - close the channel
- * @rchan_id: relay channel id
- *
- * Finalizes the last sub-buffer and marks the channel as finalized.
- * The channel buffer and channel data structure are then freed
- * automatically when the last reference to the channel is given up.
- */
-int
-relay_close(int rchan_id)
-{
- int err;
- struct rchan *rchan;
-
- if ((rchan_id < 0) || (rchan_id >= RELAY_MAX_CHANNELS))
- return -EBADF;
-
- err = relay_finalize(rchan_id);
-
- if (!err) {
- read_lock(&rchan_table_lock);
- rchan = rchan_table[rchan_id];
- read_unlock(&rchan_table_lock);
-
- if (rchan) {
- restore_callbacks(rchan);
- if (rchan->resize_min)
- del_timer(&rchan->shrink_timer);
- rchan_put(rchan);
- }
- }
-
- return err;
-}
-
-/**
- * relay_write - reserve a slot in the channel and write data into it
- * @rchan_id: relay channel id
- * @data_ptr: data to be written into reserved slot
- * @count: number of bytes to write
- * @td_offset: optional offset where time delta should be written
- * @wrote_pos: optional ptr returning buf pos written to, ignored if NULL
- *
- * Returns the number of bytes written, 0 or negative on failure.
- *
- * Reserves space in the channel and writes count bytes of data_ptr
- * to it. Automatically performs any necessary locking, depending
- * on the scheme and SMP usage in effect (no locking is done for the
- * lockless scheme regardless of usage).
- *
- * If td_offset is >= 0, the internal time delta calculated when
- * slot was reserved will be written at that offset.
- *
- * If wrote_pos is non-NULL, it will receive the location the data
- * was written to, which may be needed for some applications but is not
- * normally interesting.
- */
-int
-relay_write(int rchan_id,
- const void *data_ptr,
- size_t count,
- int td_offset,
- void **wrote_pos)
-{
- unsigned long flags;
- char *reserved, *write_pos;
- int bytes_written = 0;
- int reserve_code, interrupting;
- struct timeval ts;
- u32 td;
- struct rchan *rchan;
-
- rchan = rchan_get(rchan_id);
- if (rchan == NULL)
- return -EBADF;
-
- relay_lock_channel(rchan, flags); /* nop for lockless */
-
- write_pos = reserved = relay_reserve(rchan, count, &ts, &td,
- &reserve_code, &interrupting);
-
- if (reserved != NULL) {
- relay_write_direct(write_pos, data_ptr, count);
- if ((td_offset >= 0) && (td_offset < count - sizeof(td)))
- *((u32 *)(reserved + td_offset)) = td;
- bytes_written = count;
- } else if (reserve_code == RELAY_WRITE_TOO_LONG)
- bytes_written = -EINVAL;
-
- if (bytes_written > 0)
- relay_commit(rchan, reserved, bytes_written, reserve_code, interrupting);
-
- relay_unlock_channel(rchan, flags); /* nop for lockless */
-
- rchan_put(rchan);
-
- if (wrote_pos)
- *wrote_pos = reserved;
-
- return bytes_written;
-}
-
-/**
- * wakeup_writers - wake up VFS writers waiting on a channel
- * @private: the channel
- *
- * This is the work function used to defer writer waking. The
- * reason waking is deferred is that calling directly from
- * buffers_consumed causes problems if you're writing from say
- * the scheduler.
- */
-static void
-wakeup_writers(void *private)
-{
- struct rchan *rchan = (struct rchan *)private;
-
- wake_up_interruptible(&rchan->write_wait);
-}
-
-
-/**
- * __relay_buffers_consumed - internal version of relay_buffers_consumed
- * @rchan: the relay channel
- * @bufs_consumed: number of buffers to add to current count for channel
- *
- * Internal - updates the channel's consumed buffer count.
- */
-static void
-__relay_buffers_consumed(struct rchan *rchan, u32 bufs_consumed)
-{
- rchan->bufs_consumed += bufs_consumed;
-
- if (rchan->bufs_consumed > rchan->bufs_produced)
- rchan->bufs_consumed = rchan->bufs_produced;
-
- atomic_set(&rchan->suspended, 0);
-
- PREPARE_WORK(&rchan->wake_writers, wakeup_writers, rchan);
- schedule_delayed_work(&rchan->wake_writers, 1);
-}
-
-/**
- * __reader_buffers_consumed - update reader/channel consumed buffer count
- * @reader: channel reader
- * @bufs_consumed: number of buffers to add to current count for channel
- *
- * Internal - updates the reader's consumed buffer count. If the reader's
- * resulting total is greater than the channel's, update the channel's.
-*/
-static void
-__reader_buffers_consumed(struct rchan_reader *reader, u32 bufs_consumed)
-{
- reader->bufs_consumed += bufs_consumed;
-
- if (reader->bufs_consumed > reader->rchan->bufs_consumed)
- __relay_buffers_consumed(reader->rchan, bufs_consumed);
-}
-
-/**
- * relay_buffers_consumed - add to the # buffers consumed for the channel
- * @reader: channel reader
- * @bufs_consumed: number of buffers to add to current count for channel
- *
- * Adds to the channel's consumed buffer count. buffers_consumed should
- * be the number of buffers newly consumed, not the total number consumed.
- *
- * NOTE: kernel clients don't need to call this function if the reader
- * is auto-consuming or the channel is MODE_CONTINUOUS.
- */
-void
-relay_buffers_consumed(struct rchan_reader *reader, u32 bufs_consumed)
-{
- if (reader && reader->rchan)
- __reader_buffers_consumed(reader, bufs_consumed);
-}
-
-/**
- * __relay_bytes_consumed - internal version of relay_bytes_consumed
- * @rchan: the relay channel
- * @bytes_consumed: number of bytes to add to current count for channel
- * @read_offset: where the bytes were consumed from
- *
- * Internal - updates the channel's consumed count.
-*/
-static void
-__relay_bytes_consumed(struct rchan *rchan, u32 bytes_consumed, u32 read_offset)
-{
- u32 consuming_idx;
- u32 unused;
-
- consuming_idx = read_offset / rchan->buf_size;
-
- if (consuming_idx >= rchan->n_bufs)
- consuming_idx = rchan->n_bufs - 1;
- rchan->bytes_consumed += bytes_consumed;
-
- unused = rchan->unused_bytes[consuming_idx];
-
- if (rchan->bytes_consumed + unused >= rchan->buf_size) {
- __relay_buffers_consumed(rchan, 1);
- rchan->bytes_consumed = 0;
- }
-}
-
-/**
- * __reader_bytes_consumed - update reader/channel consumed count
- * @reader: channel reader
- * @bytes_consumed: number of bytes to add to current count for channel
- * @read_offset: where the bytes were consumed from
- *
- * Internal - updates the reader's consumed count. If the reader's
- * resulting total is greater than the channel's, update the channel's.
-*/
-static void
-__reader_bytes_consumed(struct rchan_reader *reader, u32 bytes_consumed, u32 read_offset)
-{
- u32 consuming_idx;
- u32 unused;
-
- consuming_idx = read_offset / reader->rchan->buf_size;
-
- if (consuming_idx >= reader->rchan->n_bufs)
- consuming_idx = reader->rchan->n_bufs - 1;
-
- reader->bytes_consumed += bytes_consumed;
-
- unused = reader->rchan->unused_bytes[consuming_idx];
-
- if (reader->bytes_consumed + unused >= reader->rchan->buf_size) {
- reader->bufs_consumed++;
- reader->bytes_consumed = 0;
- }
-
- if ((reader->bufs_consumed > reader->rchan->bufs_consumed) ||
- ((reader->bufs_consumed == reader->rchan->bufs_consumed) &&
- (reader->bytes_consumed > reader->rchan->bytes_consumed)))
- __relay_bytes_consumed(reader->rchan, bytes_consumed, read_offset);
-}
-
-/**
- * relay_bytes_consumed - add to the # bytes consumed for the channel
- * @reader: channel reader
- * @bytes_consumed: number of bytes to add to current count for channel
- * @read_offset: where the bytes were consumed from
- *
- * Adds to the channel's consumed count. bytes_consumed should be the
- * number of bytes actually read e.g. return value of relay_read() and
- * the read_offset should be the actual offset the bytes were read from
- * e.g. the actual_read_offset set by relay_read(). See
- * Documentation/filesystems/relayfs.txt for more details.
- *
- * NOTE: kernel clients don't need to call this function if the reader
- * is auto-consuming or the channel is MODE_CONTINUOUS.
- */
-void
-relay_bytes_consumed(struct rchan_reader *reader, u32 bytes_consumed, u32 read_offset)
-{
- if (reader && reader->rchan)
- __reader_bytes_consumed(reader, bytes_consumed, read_offset);
-}
-
-/**
- * update_readers_consumed - apply offset change to reader
- * @rchan: the channel
- *
- * Apply the consumed counts to all readers open on the channel.
- */
-void
-update_readers_consumed(struct rchan *rchan, u32 bufs_consumed, u32 bytes_consumed)
-{
- struct list_head *p;
- struct rchan_reader *reader;
-
- read_lock(&rchan->open_readers_lock);
- list_for_each(p, &rchan->open_readers) {
- reader = list_entry(p, struct rchan_reader, list);
- reader->bufs_consumed = bufs_consumed;
- reader->bytes_consumed = bytes_consumed;
- if (reader->vfs_reader)
- reader->pos.file->f_pos = 0;
- else
- reader->pos.f_pos = 0;
- reader->offset_changed = 1;
- }
- read_unlock(&rchan->open_readers_lock);
-}
-
-/**
- * do_read - utility function to do the actual read to user
- * @rchan: the channel
- * @buf: user buf to read into, NULL if just getting info
- * @count: bytes requested
- * @read_offset: offset into channel
- * @new_offset: new offset into channel after read
- * @actual_read_offset: read offset actually used
- *
- * Returns the number of bytes read, 0 if none.
- */
-static ssize_t
-do_read(struct rchan *rchan, char *buf, size_t count, u32 read_offset, u32 *new_offset, u32 *actual_read_offset)
-{
- u32 read_bufno, cur_bufno;
- u32 avail_offset, cur_idx, max_offset, buf_end_offset;
- u32 avail_count, buf_size;
- int unused_bytes = 0;
- size_t read_count = 0;
- u32 last_buf_byte_offset;
-
- *actual_read_offset = read_offset;
-
- buf_size = rchan->buf_size;
- if (unlikely(!buf_size)) BUG();
-
- read_bufno = read_offset / buf_size;
- if (unlikely(read_bufno >= RELAY_MAX_BUFS)) BUG();
- unused_bytes = rchan->unused_bytes[read_bufno];
-
- avail_offset = cur_idx = relay_get_offset(rchan, &max_offset);
-
- if (cur_idx == read_offset) {
- if (atomic_read(&rchan->suspended) == 1) {
- read_offset += 1;
- if (read_offset >= max_offset)
- read_offset = 0;
- *actual_read_offset = read_offset;
- } else {
- *new_offset = read_offset;
- return 0;
- }
- } else {
- last_buf_byte_offset = (read_bufno + 1) * buf_size - 1;
- if (read_offset == last_buf_byte_offset) {
- if (unused_bytes != 1) {
- read_offset += 1;
- if (read_offset >= max_offset)
- read_offset = 0;
- *actual_read_offset = read_offset;
- }
- }
- }
-
- read_bufno = read_offset / buf_size;
- if (unlikely(read_bufno >= RELAY_MAX_BUFS)) BUG();
- unused_bytes = rchan->unused_bytes[read_bufno];
-
- cur_bufno = cur_idx / buf_size;
-
- buf_end_offset = (read_bufno + 1) * buf_size - unused_bytes;
- if (avail_offset > buf_end_offset)
- avail_offset = buf_end_offset;
- else if (avail_offset < read_offset)
- avail_offset = buf_end_offset;
- avail_count = avail_offset - read_offset;
- read_count = avail_count >= count ? count : avail_count;
-
- if (read_count && buf != NULL)
- if (copy_to_user(buf, rchan->buf + read_offset, read_count))
- return -EFAULT;
-
- if (read_bufno == cur_bufno)
- if (read_count && (read_offset + read_count >= buf_end_offset) && (read_offset + read_count <= cur_idx)) {
- *new_offset = cur_idx;
- return read_count;
- }
-
- if (read_offset + read_count + unused_bytes > max_offset)
- *new_offset = 0;
- else if (read_offset + read_count >= buf_end_offset)
- *new_offset = read_offset + read_count + unused_bytes;
- else
- *new_offset = read_offset + read_count;
-
- return read_count;
-}
-
-/**
- * __relay_read - read bytes from channel, relative to current reader pos
- * @reader: channel reader
- * @buf: user buf to read into, NULL if just getting info
- * @count: bytes requested
- * @read_offset: offset into channel
- * @new_offset: new offset into channel after read
- * @actual_read_offset: read offset actually used
- * @wait: if non-zero, wait for something to read
- *
- * Internal - see relay_read() for details.
- *
- * Returns the number of bytes read, 0 if none, negative on failure.
- */
-static ssize_t
-__relay_read(struct rchan_reader *reader, char *buf, size_t count, u32 read_offset, u32 *new_offset, u32 *actual_read_offset, int wait)
-{
- int err = 0;
- size_t read_count = 0;
- struct rchan *rchan = reader->rchan;
-
- if (!wait && !rchan->initialized)
- return -EAGAIN;
-
- if (using_lockless(rchan))
- read_offset &= idx_mask(rchan);
-
- if (read_offset >= rchan->n_bufs * rchan->buf_size) {
- *new_offset = 0;
- if (!wait)
- return -EAGAIN;
- else
- return -EINTR;
- }
-
- if (buf != NULL && wait) {
- err = wait_event_interruptible(rchan->read_wait,
- ((rchan->finalized == 1) ||
- (atomic_read(&rchan->suspended) == 1) ||
- (relay_get_offset(rchan, NULL) != read_offset)));
-
- if (rchan->finalized)
- return 0;
-
- if (reader->offset_changed) {
- reader->offset_changed = 0;
- return -EINTR;
- }
-
- if (err)
- return err;
- }
-
- read_count = do_read(rchan, buf, count, read_offset, new_offset, actual_read_offset);
-
- if (read_count < 0)
- err = read_count;
-
- if (err)
- return err;
- else
- return read_count;
-}
-
-/**
- * relay_read - read bytes from channel, relative to current reader pos
- * @reader: channel reader
- * @buf: user buf to read into, NULL if just getting info
- * @count: bytes requested
- * @wait: if non-zero, wait for something to read
- * @actual_read_offset: set read offset actually used, must not be NULL
- *
- * Reads count bytes from the channel, or as much as is available within
- * the sub-buffer currently being read. The read offset that will be
- * read from is the position contained within the reader object. If the
- * wait flag is set, buf is non-NULL, and there is nothing available,
- * it will wait until there is. If the wait flag is 0 and there is
- * nothing available, -EAGAIN is returned. If buf is NULL, the value
- * returned is the number of bytes that would have been read.
- * actual_read_offset is the value that should be passed as the read
- * offset to relay_bytes_consumed, needed only if the reader is not
- * auto-consuming and the channel is MODE_NO_OVERWRITE, but in any case,
- * it must not be NULL. See Documentation/filesystems/relayfs.txt for
- * more details.
- */
-ssize_t
-relay_read(struct rchan_reader *reader, char *buf, size_t count, int wait, u32 *actual_read_offset)
-{
- u32 new_offset;
- u32 read_offset;
- ssize_t read_count;
-
- if (reader == NULL || reader->rchan == NULL)
- return -EBADF;
-
- if (actual_read_offset == NULL)
- return -EINVAL;
-
- if (reader->vfs_reader)
- read_offset = (u32)(reader->pos.file->f_pos);
- else
- read_offset = reader->pos.f_pos;
- *actual_read_offset = read_offset;
-
- read_count = __relay_read(reader, buf, count, read_offset,
- &new_offset, actual_read_offset, wait);
-
- if (read_count < 0)
- return read_count;
-
- if (reader->vfs_reader)
- reader->pos.file->f_pos = new_offset;
- else
- reader->pos.f_pos = new_offset;
-
- if (reader->auto_consume && ((read_count) || (new_offset != read_offset)))
- __reader_bytes_consumed(reader, read_count, *actual_read_offset);
-
- if (read_count == 0 && !wait)
- return -EAGAIN;
-
- return read_count;
-}
-
-/**
- * relay_bytes_avail - number of bytes available in current sub-buffer
- * @reader: channel reader
- *
- * Returns the number of bytes available relative to the reader's
- * current read position within the corresponding sub-buffer, 0 if
- * there is nothing available. See Documentation/filesystems/relayfs.txt
- * for more details.
- */
-ssize_t
-relay_bytes_avail(struct rchan_reader *reader)
-{
- u32 f_pos;
- u32 new_offset;
- u32 actual_read_offset;
- ssize_t bytes_read;
-
- if (reader == NULL || reader->rchan == NULL)
- return -EBADF;
-
- if (reader->vfs_reader)
- f_pos = (u32)reader->pos.file->f_pos;
- else
- f_pos = reader->pos.f_pos;
- new_offset = f_pos;
-
- bytes_read = __relay_read(reader, NULL, reader->rchan->buf_size,
- f_pos, &new_offset, &actual_read_offset, 0);
-
- if ((new_offset != f_pos) &&
- ((bytes_read == -EINTR) || (bytes_read == 0)))
- bytes_read = -EAGAIN;
- else if ((bytes_read < 0) && (bytes_read != -EAGAIN))
- bytes_read = 0;
-
- return bytes_read;
-}
-
-/**
- * rchan_empty - boolean, is the channel empty wrt reader?
- * @reader: channel reader
- *
- * Returns 1 if the channel is empty, 0 otherwise.
- */
-int
-rchan_empty(struct rchan_reader *reader)
-{
- ssize_t avail_count;
- u32 buffers_ready;
- struct rchan *rchan = reader->rchan;
- u32 cur_idx, curbuf_bytes;
- int mapped;
-
- if (atomic_read(&rchan->suspended) == 1)
- return 0;
-
- mapped = atomic_read(&rchan->mapped);
-
- if (mapped && bulk_delivery(rchan)) {
- buffers_ready = rchan->bufs_produced - rchan->bufs_consumed;
- return buffers_ready ? 0 : 1;
- }
-
- if (mapped && packet_delivery(rchan)) {
- buffers_ready = rchan->bufs_produced - rchan->bufs_consumed;
- if (buffers_ready)
- return 0;
- else {
- cur_idx = relay_get_offset(rchan, NULL);
- curbuf_bytes = cur_idx % rchan->buf_size;
- return curbuf_bytes == rchan->bytes_consumed ? 1 : 0;
- }
- }
-
- avail_count = relay_bytes_avail(reader);
-
- return avail_count ? 0 : 1;
-}
-
-/**
- * rchan_full - boolean, is the channel full wrt consuming reader?
- * @reader: channel reader
- *
- * Returns 1 if the channel is full, 0 otherwise.
- */
-int
-rchan_full(struct rchan_reader *reader)
-{
- u32 buffers_ready;
- struct rchan *rchan = reader->rchan;
-
- if (mode_continuous(rchan))
- return 0;
-
- buffers_ready = rchan->bufs_produced - rchan->bufs_consumed;
-
- return buffers_ready > reader->rchan->n_bufs - 1 ? 1 : 0;
-}
-
-/**
- * relay_info - get status and other information about a relay channel
- * @rchan_id: relay channel id
- * @rchan_info: pointer to the rchan_info struct to be filled in
- *
- * Fills in an rchan_info struct with channel status and attribute
- * information. See Documentation/filesystems/relayfs.txt for details.
- *
- * Returns 0 if successful, negative otherwise.
- */
-int
-relay_info(int rchan_id, struct rchan_info *rchan_info)
-{
- int i;
- struct rchan *rchan;
-
- rchan = rchan_get(rchan_id);
- if (rchan == NULL)
- return -EBADF;
-
- rchan_info->flags = rchan->flags;
- rchan_info->buf_size = rchan->buf_size;
- rchan_info->buf_addr = rchan->buf;
- rchan_info->alloc_size = rchan->alloc_size;
- rchan_info->n_bufs = rchan->n_bufs;
- rchan_info->cur_idx = relay_get_offset(rchan, NULL);
- rchan_info->bufs_produced = rchan->bufs_produced;
- rchan_info->bufs_consumed = rchan->bufs_consumed;
- rchan_info->buf_id = rchan->buf_id;
-
- for (i = 0; i < rchan->n_bufs; i++) {
- rchan_info->unused_bytes[i] = rchan->unused_bytes[i];
- if (using_lockless(rchan))
- rchan_info->buffer_complete[i] = (atomic_read(&fill_count(rchan, i)) == rchan->buf_size);
- else
- rchan_info->buffer_complete[i] = 0;
- }
-
- rchan_put(rchan);
-
- return 0;
-}
-
-/**
- * __add_rchan_reader - creates and adds a reader to a channel
- * @rchan: relay channel
- * @filp: the file associated with rchan, if applicable
- * @auto_consume: boolean, whether reader's reads automatically consume
- * @map_reader: boolean, whether reader's reading via a channel mapping
- *
- * Returns a pointer to the reader object create, NULL if unsuccessful
- *
- * Creates and initializes an rchan_reader object for reading the channel.
- * If filp is non-NULL, the reader is a VFS reader, otherwise not.
- *
- * If the reader is a map reader, it isn't considered a VFS reader for
- * our purposes. Also, map_readers can't be auto-consuming.
- */
-struct rchan_reader *
-__add_rchan_reader(struct rchan *rchan, struct file *filp, int auto_consume, int map_reader)
-{
- struct rchan_reader *reader;
- u32 will_read;
-
- reader = kmalloc(sizeof(struct rchan_reader), GFP_KERNEL);
-
- if (reader) {
- write_lock(&rchan->open_readers_lock);
- reader->rchan = rchan;
- if (filp) {
- reader->vfs_reader = 1;
- reader->pos.file = filp;
- } else {
- reader->vfs_reader = 0;
- reader->pos.f_pos = 0;
- }
- reader->map_reader = map_reader;
- reader->auto_consume = auto_consume;
-
- if (!map_reader) {
- will_read = rchan->bufs_produced % rchan->n_bufs;
- if (!will_read && atomic_read(&rchan->suspended))
- will_read = rchan->n_bufs;
- reader->bufs_consumed = rchan->bufs_produced - will_read;
- rchan->bufs_consumed = reader->bufs_consumed;
- rchan->bytes_consumed = reader->bytes_consumed = 0;
- reader->offset_changed = 0;
- }
-
- list_add(&reader->list, &rchan->open_readers);
- write_unlock(&rchan->open_readers_lock);
- }
-
- return reader;
-}
-
-/**
- * add_rchan_reader - create a reader for a channel
- * @rchan_id: relay channel handle
- * @auto_consume: boolean, whether reader's reads automatically consume
- *
- * Returns a pointer to the reader object created, NULL if unsuccessful
- *
- * Creates and initializes an rchan_reader object for reading the channel.
- * This function is useful only for non-VFS readers.
- */
-struct rchan_reader *
-add_rchan_reader(int rchan_id, int auto_consume)
-{
- struct rchan *rchan = rchan_get(rchan_id);
- if (rchan == NULL)
- return NULL;
-
- return __add_rchan_reader(rchan, NULL, auto_consume, 0);
-}
-
-/**
- * add_map_reader - create a map reader for a channel
- * @rchan_id: relay channel handle
- *
- * Returns a pointer to the reader object created, NULL if unsuccessful
- *
- * Creates and initializes an rchan_reader object for reading the channel.
- * This function is useful only for map readers.
- */
-struct rchan_reader *
-add_map_reader(int rchan_id)
-{
- struct rchan *rchan = rchan_get(rchan_id);
- if (rchan == NULL)
- return NULL;
-
- return __add_rchan_reader(rchan, NULL, 0, 1);
-}
-
-/**
- * __remove_rchan_reader - destroy a channel reader
- * @reader: channel reader
- *
- * Internal - removes reader from the open readers list, and frees it.
- */
-void
-__remove_rchan_reader(struct rchan_reader *reader)
-{
- struct list_head *p;
- struct rchan_reader *found_reader = NULL;
-
- write_lock(&reader->rchan->open_readers_lock);
- list_for_each(p, &reader->rchan->open_readers) {
- found_reader = list_entry(p, struct rchan_reader, list);
- if (found_reader == reader) {
- list_del(&found_reader->list);
- break;
- }
- }
- write_unlock(&reader->rchan->open_readers_lock);
-
- if (found_reader)
- kfree(found_reader);
-}
-
-/**
- * remove_rchan_reader - destroy a channel reader
- * @reader: channel reader
- *
- * Finds and removes the given reader from the channel. This function
- * is useful only for non-VFS readers.
- *
- * Returns 0 if successful, negative otherwise.
- */
-int
-remove_rchan_reader(struct rchan_reader *reader)
-{
- int err = 0;
-
- if (reader) {
- rchan_put(reader->rchan);
- __remove_rchan_reader(reader);
- } else
- err = -EINVAL;
-
- return err;
-}
-
-/**
- * remove_map_reader - destroy a map reader
- * @reader: channel reader
- *
- * Finds and removes the given map reader from the channel. This function
- * is useful only for map readers.
- *
- * Returns 0 if successful, negative otherwise.
- */
-int
-remove_map_reader(struct rchan_reader *reader)
-{
- return remove_rchan_reader(reader);
-}
-
-EXPORT_SYMBOL(relay_open);
-EXPORT_SYMBOL(relay_close);
-EXPORT_SYMBOL(relay_reset);
-EXPORT_SYMBOL(relay_reserve);
-EXPORT_SYMBOL(relay_commit);
-EXPORT_SYMBOL(relay_read);
-EXPORT_SYMBOL(relay_write);
-EXPORT_SYMBOL(relay_bytes_avail);
-EXPORT_SYMBOL(relay_buffers_consumed);
-EXPORT_SYMBOL(relay_bytes_consumed);
-EXPORT_SYMBOL(relay_info);
-EXPORT_SYMBOL(relay_discard_init_buf);
-
-
+++ /dev/null
-/*
- * RelayFS locking scheme implementation.
- *
- * Copyright (C) 1999, 2000, 2001, 2002 - Karim Yaghmour (karim@opersys.com)
- * Copyright (C) 2002, 2003 - Tom Zanussi (zanussi@us.ibm.com), IBM Corp
- *
- * This file is released under the GPL.
- */
-
-#include <asm/relay.h>
-#include "relay_locking.h"
-#include "resize.h"
-
-/**
- * switch_buffers - switches between read and write buffers.
- * @cur_time: current time.
- * @cur_tsc: the TSC associated with current_time, if applicable
- * @rchan: the channel
- * @finalizing: if true, don't start a new buffer
- * @resetting: if true,
- *
- * This should be called from with interrupts disabled.
- */
-static void
-switch_buffers(struct timeval cur_time,
- u32 cur_tsc,
- struct rchan *rchan,
- int finalizing,
- int resetting,
- int finalize_buffer_only)
-{
- char *chan_buf_end;
- int bytes_written;
-
- if (!rchan->half_switch) {
- bytes_written = rchan->callbacks->buffer_end(rchan->id,
- cur_write_pos(rchan), write_buf_end(rchan),
- cur_time, cur_tsc, using_tsc(rchan));
- if (bytes_written == 0)
- rchan->unused_bytes[rchan->buf_idx % rchan->n_bufs] =
- write_buf_end(rchan) - cur_write_pos(rchan);
- }
-
- if (finalize_buffer_only) {
- rchan->bufs_produced++;
- return;
- }
-
- chan_buf_end = rchan->buf + rchan->n_bufs * rchan->buf_size;
- if((write_buf(rchan) + rchan->buf_size >= chan_buf_end) || resetting)
- write_buf(rchan) = rchan->buf;
- else
- write_buf(rchan) += rchan->buf_size;
- write_buf_end(rchan) = write_buf(rchan) + rchan->buf_size;
- write_limit(rchan) = write_buf_end(rchan) - rchan->end_reserve;
- cur_write_pos(rchan) = write_buf(rchan);
-
- rchan->buf_start_time = cur_time;
- rchan->buf_start_tsc = cur_tsc;
-
- if (resetting)
- rchan->buf_idx = 0;
- else
- rchan->buf_idx++;
- rchan->buf_id++;
-
- if (!packet_delivery(rchan))
- rchan->unused_bytes[rchan->buf_idx % rchan->n_bufs] = 0;
-
- if (resetting) {
- rchan->bufs_produced = rchan->bufs_produced + rchan->n_bufs;
- rchan->bufs_produced -= rchan->bufs_produced % rchan->n_bufs;
- rchan->bufs_consumed = rchan->bufs_produced;
- rchan->bytes_consumed = 0;
- update_readers_consumed(rchan, rchan->bufs_consumed, rchan->bytes_consumed);
- } else if (!rchan->half_switch)
- rchan->bufs_produced++;
-
- rchan->half_switch = 0;
-
- if (!finalizing) {
- bytes_written = rchan->callbacks->buffer_start(rchan->id, cur_write_pos(rchan), rchan->buf_id, cur_time, cur_tsc, using_tsc(rchan));
- cur_write_pos(rchan) += bytes_written;
- }
-}
-
-/**
- * locking_reserve - reserve a slot in the buffer for an event.
- * @rchan: the channel
- * @slot_len: the length of the slot to reserve
- * @ts: variable that will receive the time the slot was reserved
- * @tsc: the timestamp counter associated with time
- * @err: receives the result flags
- * @interrupting: if this write is interrupting another, set to non-zero
- *
- * Returns pointer to the beginning of the reserved slot, NULL if error.
- *
- * The err value contains the result flags and is an ORed combination
- * of the following:
- *
- * RELAY_BUFFER_SWITCH_NONE - no buffer switch occurred
- * RELAY_EVENT_DISCARD_NONE - event should not be discarded
- * RELAY_BUFFER_SWITCH - buffer switch occurred
- * RELAY_EVENT_DISCARD - event should be discarded (all buffers are full)
- * RELAY_EVENT_TOO_LONG - event won't fit into even an empty buffer
- */
-inline char *
-locking_reserve(struct rchan *rchan,
- u32 slot_len,
- struct timeval *ts,
- u32 *tsc,
- int *err,
- int *interrupting)
-{
- u32 buffers_ready;
- int bytes_written;
-
- *err = RELAY_BUFFER_SWITCH_NONE;
-
- if (slot_len >= rchan->buf_size) {
- *err = RELAY_WRITE_DISCARD | RELAY_WRITE_TOO_LONG;
- return NULL;
- }
-
- if (rchan->initialized == 0) {
- rchan->initialized = 1;
- get_timestamp(&rchan->buf_start_time,
- &rchan->buf_start_tsc, rchan);
- rchan->unused_bytes[0] = 0;
- bytes_written = rchan->callbacks->buffer_start(
- rchan->id, cur_write_pos(rchan),
- rchan->buf_id, rchan->buf_start_time,
- rchan->buf_start_tsc, using_tsc(rchan));
- cur_write_pos(rchan) += bytes_written;
- *tsc = get_time_delta(ts, rchan);
- return cur_write_pos(rchan);
- }
-
- *tsc = get_time_delta(ts, rchan);
-
- if (in_progress_event_size(rchan)) {
- interrupted_pos(rchan) = cur_write_pos(rchan);
- cur_write_pos(rchan) = in_progress_event_pos(rchan)
- + in_progress_event_size(rchan)
- + interrupting_size(rchan);
- *interrupting = 1;
- } else {
- in_progress_event_pos(rchan) = cur_write_pos(rchan);
- in_progress_event_size(rchan) = slot_len;
- interrupting_size(rchan) = 0;
- }
-
- if (cur_write_pos(rchan) + slot_len > write_limit(rchan)) {
- if (atomic_read(&rchan->suspended) == 1) {
- in_progress_event_pos(rchan) = NULL;
- in_progress_event_size(rchan) = 0;
- interrupting_size(rchan) = 0;
- *err = RELAY_WRITE_DISCARD;
- return NULL;
- }
-
- buffers_ready = rchan->bufs_produced - rchan->bufs_consumed;
- if (buffers_ready == rchan->n_bufs - 1) {
- if (!mode_continuous(rchan)) {
- atomic_set(&rchan->suspended, 1);
- in_progress_event_pos(rchan) = NULL;
- in_progress_event_size(rchan) = 0;
- interrupting_size(rchan) = 0;
- get_timestamp(ts, tsc, rchan);
- switch_buffers(*ts, *tsc, rchan, 0, 0, 1);
- recalc_time_delta(ts, tsc, rchan);
- rchan->half_switch = 1;
-
- cur_write_pos(rchan) = write_buf_end(rchan) - 1;
- *err = RELAY_BUFFER_SWITCH | RELAY_WRITE_DISCARD;
- return NULL;
- }
- }
-
- get_timestamp(ts, tsc, rchan);
- switch_buffers(*ts, *tsc, rchan, 0, 0, 0);
- recalc_time_delta(ts, tsc, rchan);
- *err = RELAY_BUFFER_SWITCH;
- }
-
- return cur_write_pos(rchan);
-}
-
-/**
- * locking_commit - commit a reserved slot in the buffer
- * @rchan: the channel
- * @from: commit the length starting here
- * @len: length committed
- * @deliver: length committed
- * @interrupting: not used
- *
- * Commits len bytes and calls deliver callback if applicable.
- */
-inline void
-locking_commit(struct rchan *rchan,
- char *from,
- u32 len,
- int deliver,
- int interrupting)
-{
- cur_write_pos(rchan) += len;
-
- if (interrupting) {
- cur_write_pos(rchan) = interrupted_pos(rchan);
- interrupting_size(rchan) += len;
- } else {
- in_progress_event_size(rchan) = 0;
- if (interrupting_size(rchan)) {
- cur_write_pos(rchan) += interrupting_size(rchan);
- interrupting_size(rchan) = 0;
- }
- }
-
- if (deliver) {
- if (bulk_delivery(rchan)) {
- u32 cur_idx = cur_write_pos(rchan) - rchan->buf;
- u32 cur_bufno = cur_idx / rchan->buf_size;
- from = rchan->buf + cur_bufno * rchan->buf_size;
- len = cur_idx - cur_bufno * rchan->buf_size;
- }
- rchan->callbacks->deliver(rchan->id, from, len);
- expand_check(rchan);
- }
-}
-
-/**
- * locking_finalize: - finalize last buffer at end of channel use
- * @rchan: the channel
- */
-inline void
-locking_finalize(struct rchan *rchan)
-{
- unsigned long int flags;
- struct timeval time;
- u32 tsc;
-
- local_irq_save(flags);
- get_timestamp(&time, &tsc, rchan);
- switch_buffers(time, tsc, rchan, 1, 0, 0);
- local_irq_restore(flags);
-}
-
-/**
- * locking_get_offset - get current and max 'file' offsets for VFS
- * @rchan: the channel
- * @max_offset: maximum channel offset
- *
- * Returns the current and maximum buffer offsets in VFS terms.
- */
-u32
-locking_get_offset(struct rchan *rchan,
- u32 *max_offset)
-{
- if (max_offset)
- *max_offset = rchan->buf_size * rchan->n_bufs - 1;
-
- return cur_write_pos(rchan) - rchan->buf;
-}
-
-/**
- * locking_reset - reset the channel
- * @rchan: the channel
- * @init: 1 if this is a first-time channel initialization
- */
-void locking_reset(struct rchan *rchan, int init)
-{
- if (init)
- channel_lock(rchan) = SPIN_LOCK_UNLOCKED;
- write_buf(rchan) = rchan->buf;
- write_buf_end(rchan) = write_buf(rchan) + rchan->buf_size;
- cur_write_pos(rchan) = write_buf(rchan);
- write_limit(rchan) = write_buf_end(rchan) - rchan->end_reserve;
- in_progress_event_pos(rchan) = NULL;
- in_progress_event_size(rchan) = 0;
- interrupted_pos(rchan) = NULL;
- interrupting_size(rchan) = 0;
-}
-
-/**
- * locking_reset_index - atomically set channel index to the beginning
- * @rchan: the channel
- *
- * If this fails, it means that something else just logged something
- * and therefore we probably no longer want to do this. It's up to the
- * caller anyway...
- *
- * Returns 0 if the index was successfully set, negative otherwise
- */
-int
-locking_reset_index(struct rchan *rchan, u32 old_idx)
-{
- unsigned long flags;
- struct timeval time;
- u32 tsc;
- u32 cur_idx;
-
- relay_lock_channel(rchan, flags);
- cur_idx = locking_get_offset(rchan, NULL);
- if (cur_idx != old_idx) {
- relay_unlock_channel(rchan, flags);
- return -1;
- }
-
- get_timestamp(&time, &tsc, rchan);
- switch_buffers(time, tsc, rchan, 0, 1, 0);
-
- relay_unlock_channel(rchan, flags);
-
- return 0;
-}
-
-
-
-
-
-
-
+++ /dev/null
-#ifndef _RELAY_LOCKING_H
-#define _RELAY_LOCKING_H
-
-extern char *
-locking_reserve(struct rchan *rchan,
- u32 slot_len,
- struct timeval *time_stamp,
- u32 *tsc,
- int *err,
- int *interrupting);
-
-extern void
-locking_commit(struct rchan *rchan,
- char *from,
- u32 len,
- int deliver,
- int interrupting);
-
-extern void
-locking_resume(struct rchan *rchan);
-
-extern void
-locking_finalize(struct rchan *rchan);
-
-extern u32
-locking_get_offset(struct rchan *rchan, u32 *max_offset);
-
-extern void
-locking_reset(struct rchan *rchan, int init);
-
-extern int
-locking_reset_index(struct rchan *rchan, u32 old_idx);
-
-#endif /* _RELAY_LOCKING_H */
+++ /dev/null
-/*
- * RelayFS lockless scheme implementation.
- *
- * Copyright (C) 1999, 2000, 2001, 2002 - Karim Yaghmour (karim@opersys.com)
- * Copyright (C) 2002, 2003 - Tom Zanussi (zanussi@us.ibm.com), IBM Corp
- * Copyright (C) 2002, 2003 - Bob Wisniewski (bob@watson.ibm.com), IBM Corp
- *
- * This file is released under the GPL.
- */
-
-#include <asm/relay.h>
-#include "relay_lockless.h"
-#include "resize.h"
-
-/**
- * compare_and_store_volatile - self-explicit
- * @ptr: ptr to the word that will receive the new value
- * @oval: the value we think is currently in *ptr
- * @nval: the value *ptr will get if we were right
- */
-inline int
-compare_and_store_volatile(volatile u32 *ptr,
- u32 oval,
- u32 nval)
-{
- u32 prev;
-
- barrier();
- prev = cmpxchg(ptr, oval, nval);
- barrier();
-
- return (prev == oval);
-}
-
-/**
- * atomic_set_volatile - atomically set the value in ptr to nval.
- * @ptr: ptr to the word that will receive the new value
- * @nval: the new value
- */
-inline void
-atomic_set_volatile(atomic_t *ptr,
- u32 nval)
-{
- barrier();
- atomic_set(ptr, (int)nval);
- barrier();
-}
-
-/**
- * atomic_add_volatile - atomically add val to the value at ptr.
- * @ptr: ptr to the word that will receive the addition
- * @val: the value to add to *ptr
- */
-inline void
-atomic_add_volatile(atomic_t *ptr, u32 val)
-{
- barrier();
- atomic_add((int)val, ptr);
- barrier();
-}
-
-/**
- * atomic_sub_volatile - atomically substract val from the value at ptr.
- * @ptr: ptr to the word that will receive the subtraction
- * @val: the value to subtract from *ptr
- */
-inline void
-atomic_sub_volatile(atomic_t *ptr, s32 val)
-{
- barrier();
- atomic_sub((int)val, ptr);
- barrier();
-}
-
-/**
- * lockless_commit - commit a reserved slot in the buffer
- * @rchan: the channel
- * @from: commit the length starting here
- * @len: length committed
- * @deliver: length committed
- * @interrupting: not used
- *
- * Commits len bytes and calls deliver callback if applicable.
- */
-inline void
-lockless_commit(struct rchan *rchan,
- char *from,
- u32 len,
- int deliver,
- int interrupting)
-{
- u32 bufno, idx;
-
- idx = from - rchan->buf;
-
- if (len > 0) {
- bufno = RELAY_BUFNO_GET(idx, offset_bits(rchan));
- atomic_add_volatile(&fill_count(rchan, bufno), len);
- }
-
- if (deliver) {
- u32 mask = offset_mask(rchan);
- if (bulk_delivery(rchan)) {
- from = rchan->buf + RELAY_BUF_OFFSET_CLEAR(idx, mask);
- len += RELAY_BUF_OFFSET_GET(idx, mask);
- }
- rchan->callbacks->deliver(rchan->id, from, len);
- expand_check(rchan);
- }
-}
-
-/**
- * get_buffer_end - get the address of the end of buffer
- * @rchan: the channel
- * @buf_idx: index into channel corresponding to address
- */
-static inline char *
-get_buffer_end(struct rchan *rchan, u32 buf_idx)
-{
- return rchan->buf
- + RELAY_BUF_OFFSET_CLEAR(buf_idx, offset_mask(rchan))
- + RELAY_BUF_SIZE(offset_bits(rchan));
-}
-
-
-/**
- * finalize_buffer - utility function consolidating end-of-buffer tasks.
- * @rchan: the channel
- * @end_idx: index into buffer to write the end-buffer event at
- * @size_lost: number of unused bytes at the end of the buffer
- * @time_stamp: the time of the end-buffer event
- * @tsc: the timestamp counter associated with time
- * @resetting: are we resetting the channel?
- *
- * This function must be called with local irqs disabled.
- */
-static inline void
-finalize_buffer(struct rchan *rchan,
- u32 end_idx,
- u32 size_lost,
- struct timeval *time_stamp,
- u32 *tsc,
- int resetting)
-{
- char* cur_write_pos;
- char* write_buf_end;
- u32 bufno;
- int bytes_written;
-
- cur_write_pos = rchan->buf + end_idx;
- write_buf_end = get_buffer_end(rchan, end_idx - 1);
-
- bytes_written = rchan->callbacks->buffer_end(rchan->id, cur_write_pos,
- write_buf_end, *time_stamp, *tsc, using_tsc(rchan));
- if (bytes_written == 0)
- rchan->unused_bytes[rchan->buf_idx % rchan->n_bufs] = size_lost;
-
- bufno = RELAY_BUFNO_GET(end_idx, offset_bits(rchan));
- atomic_add_volatile(&fill_count(rchan, bufno), size_lost);
- if (resetting) {
- rchan->bufs_produced = rchan->bufs_produced + rchan->n_bufs;
- rchan->bufs_produced -= rchan->bufs_produced % rchan->n_bufs;
- rchan->bufs_consumed = rchan->bufs_produced;
- rchan->bytes_consumed = 0;
- update_readers_consumed(rchan, rchan->bufs_consumed, rchan->bytes_consumed);
- } else
- rchan->bufs_produced++;
-}
-
-/**
- * lockless_finalize: - finalize last buffer at end of channel use
- * @rchan: the channel
- */
-inline void
-lockless_finalize(struct rchan *rchan)
-{
- u32 event_end_idx;
- u32 size_lost;
- unsigned long int flags;
- struct timeval time;
- u32 tsc;
-
- event_end_idx = RELAY_BUF_OFFSET_GET(idx(rchan), offset_mask(rchan));
- size_lost = RELAY_BUF_SIZE(offset_bits(rchan)) - event_end_idx;
-
- local_irq_save(flags);
- get_timestamp(&time, &tsc, rchan);
- finalize_buffer(rchan, idx(rchan) & idx_mask(rchan), size_lost,
- &time, &tsc, 0);
- local_irq_restore(flags);
-}
-
-/**
- * discard_check: - determine whether a write should be discarded
- * @rchan: the channel
- * @old_idx: index into buffer where check for space should begin
- * @write_len: the length of the write to check
- * @time_stamp: the time of the end-buffer event
- * @tsc: the timestamp counter associated with time
- *
- * The return value contains the result flags and is an ORed combination
- * of the following:
- *
- * RELAY_WRITE_DISCARD_NONE - write should not be discarded
- * RELAY_BUFFER_SWITCH - buffer switch occurred
- * RELAY_WRITE_DISCARD - write should be discarded (all buffers are full)
- * RELAY_WRITE_TOO_LONG - write won't fit into even an empty buffer
- */
-static inline int
-discard_check(struct rchan *rchan,
- u32 old_idx,
- u32 write_len,
- struct timeval *time_stamp,
- u32 *tsc)
-{
- u32 buffers_ready;
- u32 offset_mask = offset_mask(rchan);
- u8 offset_bits = offset_bits(rchan);
- u32 idx_mask = idx_mask(rchan);
- u32 size_lost;
- unsigned long int flags;
-
- if (write_len > RELAY_BUF_SIZE(offset_bits))
- return RELAY_WRITE_DISCARD | RELAY_WRITE_TOO_LONG;
-
- if (mode_continuous(rchan))
- return RELAY_WRITE_DISCARD_NONE;
-
- local_irq_save(flags);
- if (atomic_read(&rchan->suspended) == 1) {
- local_irq_restore(flags);
- return RELAY_WRITE_DISCARD;
- }
- if (rchan->half_switch) {
- local_irq_restore(flags);
- return RELAY_WRITE_DISCARD_NONE;
- }
- buffers_ready = rchan->bufs_produced - rchan->bufs_consumed;
- if (buffers_ready == rchan->n_bufs - 1) {
- atomic_set(&rchan->suspended, 1);
- size_lost = RELAY_BUF_SIZE(offset_bits)
- - RELAY_BUF_OFFSET_GET(old_idx, offset_mask);
- finalize_buffer(rchan, old_idx & idx_mask, size_lost,
- time_stamp, tsc, 0);
- rchan->half_switch = 1;
- idx(rchan) = RELAY_BUF_OFFSET_CLEAR((old_idx & idx_mask), offset_mask(rchan)) + RELAY_BUF_SIZE(offset_bits) - 1;
- local_irq_restore(flags);
-
- return RELAY_BUFFER_SWITCH | RELAY_WRITE_DISCARD;
- }
- local_irq_restore(flags);
-
- return RELAY_WRITE_DISCARD_NONE;
-}
-
-/**
- * switch_buffers - switch over to a new sub-buffer
- * @rchan: the channel
- * @slot_len: the length of the slot needed for the current write
- * @offset: the offset calculated for the new index
- * @ts: timestamp
- * @tsc: the timestamp counter associated with time
- * @old_idx: the value of the buffer control index when we were called
- * @old_idx: the new calculated value of the buffer control index
- * @resetting: are we resetting the channel?
- */
-static inline void
-switch_buffers(struct rchan *rchan,
- u32 slot_len,
- u32 offset,
- struct timeval *ts,
- u32 *tsc,
- u32 new_idx,
- u32 old_idx,
- int resetting)
-{
- u32 size_lost = rchan->end_reserve;
- unsigned long int flags;
- u32 idx_mask = idx_mask(rchan);
- u8 offset_bits = offset_bits(rchan);
- char *cur_write_pos;
- u32 new_buf_no;
- u32 start_reserve = rchan->start_reserve;
-
- if (resetting)
- size_lost = RELAY_BUF_SIZE(offset_bits(rchan)) - old_idx % rchan->buf_size;
-
- if (offset > 0)
- size_lost += slot_len - offset;
- else
- old_idx += slot_len;
-
- local_irq_save(flags);
- if (!rchan->half_switch)
- finalize_buffer(rchan, old_idx & idx_mask, size_lost,
- ts, tsc, resetting);
- rchan->half_switch = 0;
- rchan->buf_start_time = *ts;
- rchan->buf_start_tsc = *tsc;
- local_irq_restore(flags);
-
- cur_write_pos = rchan->buf + RELAY_BUF_OFFSET_CLEAR((new_idx
- & idx_mask), offset_mask(rchan));
- if (resetting)
- rchan->buf_idx = 0;
- else
- rchan->buf_idx++;
- rchan->buf_id++;
-
- rchan->unused_bytes[rchan->buf_idx % rchan->n_bufs] = 0;
-
- rchan->callbacks->buffer_start(rchan->id, cur_write_pos,
- rchan->buf_id, *ts, *tsc, using_tsc(rchan));
- new_buf_no = RELAY_BUFNO_GET(new_idx & idx_mask, offset_bits);
- atomic_sub_volatile(&fill_count(rchan, new_buf_no),
- RELAY_BUF_SIZE(offset_bits) - start_reserve);
- if (atomic_read(&fill_count(rchan, new_buf_no)) < start_reserve)
- atomic_set_volatile(&fill_count(rchan, new_buf_no),
- start_reserve);
-}
-
-/**
- * lockless_reserve_slow - the slow reserve path in the lockless scheme
- * @rchan: the channel
- * @slot_len: the length of the slot to reserve
- * @ts: variable that will receive the time the slot was reserved
- * @tsc: the timestamp counter associated with time
- * @old_idx: the value of the buffer control index when we were called
- * @err: receives the result flags
- *
- * Returns pointer to the beginning of the reserved slot, NULL if error.
-
- * err values same as for lockless_reserve.
- */
-static inline char *
-lockless_reserve_slow(struct rchan *rchan,
- u32 slot_len,
- struct timeval *ts,
- u32 *tsc,
- u32 old_idx,
- int *err)
-{
- u32 new_idx, offset;
- unsigned long int flags;
- u32 offset_mask = offset_mask(rchan);
- u32 idx_mask = idx_mask(rchan);
- u32 start_reserve = rchan->start_reserve;
- u32 end_reserve = rchan->end_reserve;
- int discard_event;
- u32 reserved_idx;
- char *cur_write_pos;
- int initializing = 0;
-
- *err = RELAY_BUFFER_SWITCH_NONE;
-
- discard_event = discard_check(rchan, old_idx, slot_len, ts, tsc);
- if (discard_event != RELAY_WRITE_DISCARD_NONE) {
- *err = discard_event;
- return NULL;
- }
-
- local_irq_save(flags);
- if (rchan->initialized == 0) {
- rchan->initialized = initializing = 1;
- idx(rchan) = rchan->start_reserve + rchan->rchan_start_reserve;
- }
- local_irq_restore(flags);
-
- do {
- old_idx = idx(rchan);
- new_idx = old_idx + slot_len;
-
- offset = RELAY_BUF_OFFSET_GET(new_idx + end_reserve,
- offset_mask);
- if ((offset < slot_len) && (offset > 0)) {
- reserved_idx = RELAY_BUF_OFFSET_CLEAR(new_idx
- + end_reserve, offset_mask) + start_reserve;
- new_idx = reserved_idx + slot_len;
- } else if (offset < slot_len) {
- reserved_idx = old_idx;
- new_idx = RELAY_BUF_OFFSET_CLEAR(new_idx
- + end_reserve, offset_mask) + start_reserve;
- } else
- reserved_idx = old_idx;
- get_timestamp(ts, tsc, rchan);
- } while (!compare_and_store_volatile(&idx(rchan), old_idx, new_idx));
-
- reserved_idx &= idx_mask;
-
- if (initializing == 1) {
- cur_write_pos = rchan->buf
- + RELAY_BUF_OFFSET_CLEAR((old_idx & idx_mask),
- offset_mask(rchan));
- rchan->buf_start_time = *ts;
- rchan->buf_start_tsc = *tsc;
- rchan->unused_bytes[0] = 0;
-
- rchan->callbacks->buffer_start(rchan->id, cur_write_pos,
- rchan->buf_id, *ts, *tsc, using_tsc(rchan));
- }
-
- if (offset < slot_len) {
- switch_buffers(rchan, slot_len, offset, ts, tsc, new_idx,
- old_idx, 0);
- *err = RELAY_BUFFER_SWITCH;
- }
-
- /* If not using TSC, need to calc time delta */
- recalc_time_delta(ts, tsc, rchan);
-
- return rchan->buf + reserved_idx;
-}
-
-/**
- * lockless_reserve - reserve a slot in the buffer for an event.
- * @rchan: the channel
- * @slot_len: the length of the slot to reserve
- * @ts: variable that will receive the time the slot was reserved
- * @tsc: the timestamp counter associated with time
- * @err: receives the result flags
- * @interrupting: not used
- *
- * Returns pointer to the beginning of the reserved slot, NULL if error.
- *
- * The err value contains the result flags and is an ORed combination
- * of the following:
- *
- * RELAY_BUFFER_SWITCH_NONE - no buffer switch occurred
- * RELAY_EVENT_DISCARD_NONE - event should not be discarded
- * RELAY_BUFFER_SWITCH - buffer switch occurred
- * RELAY_EVENT_DISCARD - event should be discarded (all buffers are full)
- * RELAY_EVENT_TOO_LONG - event won't fit into even an empty buffer
- */
-inline char *
-lockless_reserve(struct rchan *rchan,
- u32 slot_len,
- struct timeval *ts,
- u32 *tsc,
- int *err,
- int *interrupting)
-{
- u32 old_idx, new_idx, offset;
- u32 offset_mask = offset_mask(rchan);
-
- do {
- old_idx = idx(rchan);
- new_idx = old_idx + slot_len;
-
- offset = RELAY_BUF_OFFSET_GET(new_idx + rchan->end_reserve,
- offset_mask);
- if (offset < slot_len)
- return lockless_reserve_slow(rchan, slot_len,
- ts, tsc, old_idx, err);
- get_time_or_tsc(ts, tsc, rchan);
- } while (!compare_and_store_volatile(&idx(rchan), old_idx, new_idx));
-
- /* If not using TSC, need to calc time delta */
- recalc_time_delta(ts, tsc, rchan);
-
- *err = RELAY_BUFFER_SWITCH_NONE;
-
- return rchan->buf + (old_idx & idx_mask(rchan));
-}
-
-/**
- * lockless_get_offset - get current and max channel offsets
- * @rchan: the channel
- * @max_offset: maximum channel offset
- *
- * Returns the current and maximum channel offsets.
- */
-u32
-lockless_get_offset(struct rchan *rchan,
- u32 *max_offset)
-{
- if (max_offset)
- *max_offset = rchan->buf_size * rchan->n_bufs - 1;
-
- return rchan->initialized ? idx(rchan) & idx_mask(rchan) : 0;
-}
-
-/**
- * lockless_reset - reset the channel
- * @rchan: the channel
- * @init: 1 if this is a first-time channel initialization
- */
-void lockless_reset(struct rchan *rchan, int init)
-{
- int i;
-
- /* Start first buffer at 0 - (end_reserve + 1) so that it
- gets initialized via buffer_start callback as well. */
- idx(rchan) = 0UL - (rchan->end_reserve + 1);
- idx_mask(rchan) =
- (1UL << (bufno_bits(rchan) + offset_bits(rchan))) - 1;
- atomic_set(&fill_count(rchan, 0),
- (int)rchan->start_reserve +
- (int)rchan->rchan_start_reserve);
- for (i = 1; i < rchan->n_bufs; i++)
- atomic_set(&fill_count(rchan, i),
- (int)RELAY_BUF_SIZE(offset_bits(rchan)));
-}
-
-/**
- * lockless_reset_index - atomically set channel index to the beginning
- * @rchan: the channel
- * @old_idx: the current index
- *
- * If this fails, it means that something else just logged something
- * and therefore we probably no longer want to do this. It's up to the
- * caller anyway...
- *
- * Returns 0 if the index was successfully set, negative otherwise
- */
-int
-lockless_reset_index(struct rchan *rchan, u32 old_idx)
-{
- struct timeval ts;
- u32 tsc;
- u32 new_idx;
-
- if (compare_and_store_volatile(&idx(rchan), old_idx, 0)) {
- new_idx = rchan->start_reserve;
- switch_buffers(rchan, 0, 0, &ts, &tsc, new_idx, old_idx, 1);
- return 0;
- } else
- return -1;
-}
-
-
-
-
-
-
-
-
-
-
-
-
-
+++ /dev/null
-#ifndef _RELAY_LOCKLESS_H
-#define _RELAY_LOCKLESS_H
-
-extern char *
-lockless_reserve(struct rchan *rchan,
- u32 slot_len,
- struct timeval *time_stamp,
- u32 *tsc,
- int * interrupting,
- int * errcode);
-
-extern void
-lockless_commit(struct rchan *rchan,
- char * from,
- u32 len,
- int deliver,
- int interrupting);
-
-extern void
-lockless_resume(struct rchan *rchan);
-
-extern void
-lockless_finalize(struct rchan *rchan);
-
-extern u32
-lockless_get_offset(struct rchan *rchan, u32 *max_offset);
-
-extern void
-lockless_reset(struct rchan *rchan, int init);
-
-extern int
-lockless_reset_index(struct rchan *rchan, u32 old_idx);
-
-#endif/* _RELAY_LOCKLESS_H */
+++ /dev/null
-/*
- * RelayFS buffer management and resizing code.
- *
- * Copyright (C) 2002, 2003 - Tom Zanussi (zanussi@us.ibm.com), IBM Corp
- * Copyright (C) 1999, 2000, 2001, 2002 - Karim Yaghmour (karim@opersys.com)
- *
- * This file is released under the GPL.
- */
-
-#include <linux/module.h>
-#include <linux/vmalloc.h>
-#include <linux/mm.h>
-#include <asm/relay.h>
-#include "resize.h"
-
-/**
- * alloc_page_array - alloc array to hold pages, but not pages
- * @size: the total size of the memory represented by the page array
- * @page_count: the number of pages the array can hold
- * @err: 0 on success, negative otherwise
- *
- * Returns a pointer to the page array if successful, NULL otherwise.
- */
-static struct page **
-alloc_page_array(int size, int *page_count, int *err)
-{
- int n_pages;
- struct page **page_array;
- int page_array_size;
-
- *err = 0;
-
- size = PAGE_ALIGN(size);
- n_pages = size >> PAGE_SHIFT;
- page_array_size = n_pages * sizeof(struct page *);
- page_array = kmalloc(page_array_size, GFP_KERNEL);
- if (page_array == NULL) {
- *err = -ENOMEM;
- return NULL;
- }
- *page_count = n_pages;
- memset(page_array, 0, page_array_size);
-
- return page_array;
-}
-
-/**
- * free_page_array - free array to hold pages, but not pages
- * @page_array: pointer to the page array
- */
-static inline void
-free_page_array(struct page **page_array)
-{
- kfree(page_array);
-}
-
-/**
- * depopulate_page_array - free and unreserve all pages in the array
- * @page_array: pointer to the page array
- * @page_count: number of pages to free
- */
-static void
-depopulate_page_array(struct page **page_array, int page_count)
-{
- int i;
-
- for (i = 0; i < page_count; i++) {
- ClearPageReserved(page_array[i]);
- __free_page(page_array[i]);
- }
-}
-
-/**
- * populate_page_array - allocate and reserve pages
- * @page_array: pointer to the page array
- * @page_count: number of pages to allocate
- *
- * Returns 0 if successful, negative otherwise.
- */
-static int
-populate_page_array(struct page **page_array, int page_count)
-{
- int i;
-
- for (i = 0; i < page_count; i++) {
- page_array[i] = alloc_page(GFP_KERNEL);
- if (unlikely(!page_array[i])) {
- depopulate_page_array(page_array, i);
- return -ENOMEM;
- }
- SetPageReserved(page_array[i]);
- }
- return 0;
-}
-
-/**
- * alloc_rchan_buf - allocate the initial channel buffer
- * @size: total size of the buffer
- * @page_array: receives a pointer to the buffer's page array
- * @page_count: receives the number of pages allocated
- *
- * Returns a pointer to the resulting buffer, NULL if unsuccessful
- */
-void *
-alloc_rchan_buf(unsigned long size, struct page ***page_array, int *page_count)
-{
- void *mem;
- int err;
-
- *page_array = alloc_page_array(size, page_count, &err);
- if (!*page_array)
- return NULL;
-
- err = populate_page_array(*page_array, *page_count);
- if (err) {
- free_page_array(*page_array);
- *page_array = NULL;
- return NULL;
- }
-
- mem = vmap(*page_array, *page_count, GFP_KERNEL, PAGE_KERNEL);
- if (!mem) {
- depopulate_page_array(*page_array, *page_count);
- free_page_array(*page_array);
- *page_array = NULL;
- return NULL;
- }
- memset(mem, 0, size);
-
- return mem;
-}
-
-/**
- * free_rchan_buf - free a channel buffer
- * @buf: pointer to the buffer to free
- * @page_array: pointer to the buffer's page array
- * @page_count: number of pages in page array
- */
-void
-free_rchan_buf(void *buf, struct page **page_array, int page_count)
-{
- vunmap(buf);
- depopulate_page_array(page_array, page_count);
- free_page_array(page_array);
-}
-
-/**
- * expand_check - check whether the channel needs expanding
- * @rchan: the channel
- *
- * If the channel needs expanding, the needs_resize callback is
- * called with RELAY_RESIZE_EXPAND.
- *
- * Returns the suggested number of sub-buffers for the new
- * buffer.
- */
-void
-expand_check(struct rchan *rchan)
-{
- u32 active_bufs;
- u32 new_n_bufs = 0;
- u32 threshold = rchan->n_bufs * RESIZE_THRESHOLD;
-
- if (rchan->init_buf)
- return;
-
- if (rchan->resize_min == 0)
- return;
-
- if (rchan->resizing || rchan->replace_buffer)
- return;
-
- active_bufs = rchan->bufs_produced - rchan->bufs_consumed + 1;
-
- if (rchan->resize_max && active_bufs == threshold) {
- new_n_bufs = rchan->n_bufs * 2;
- }
-
- if (new_n_bufs && (new_n_bufs * rchan->buf_size <= rchan->resize_max))
- rchan->callbacks->needs_resize(rchan->id,
- RELAY_RESIZE_EXPAND,
- rchan->buf_size,
- new_n_bufs);
-}
-
-/**
- * can_shrink - check whether the channel can shrink
- * @rchan: the channel
- * @cur_idx: the current channel index
- *
- * Returns the suggested number of sub-buffers for the new
- * buffer, 0 if the buffer is not shrinkable.
- */
-static inline u32
-can_shrink(struct rchan *rchan, u32 cur_idx)
-{
- u32 active_bufs = rchan->bufs_produced - rchan->bufs_consumed + 1;
- u32 new_n_bufs = 0;
- u32 cur_bufno_bytes = cur_idx % rchan->buf_size;
-
- if (rchan->resize_min == 0 ||
- rchan->resize_min >= rchan->n_bufs * rchan->buf_size)
- goto out;
-
- if (active_bufs > 1)
- goto out;
-
- if (cur_bufno_bytes != rchan->bytes_consumed)
- goto out;
-
- new_n_bufs = rchan->resize_min / rchan->buf_size;
-out:
- return new_n_bufs;
-}
-
-/**
- * shrink_check: - timer function checking whether the channel can shrink
- * @data: unused
- *
- * Every SHRINK_TIMER_SECS, check whether the channel is shrinkable.
- * If so, we attempt to atomically reset the channel to the beginning.
- * The needs_resize callback is then called with RELAY_RESIZE_SHRINK.
- * If the reset fails, it means we really shouldn't be shrinking now
- * and need to wait until the next time around.
- */
-static void
-shrink_check(unsigned long data)
-{
- struct rchan *rchan = (struct rchan *)data;
- u32 shrink_to_nbufs, cur_idx;
-
- del_timer(&rchan->shrink_timer);
- rchan->shrink_timer.expires = jiffies + SHRINK_TIMER_SECS * HZ;
- add_timer(&rchan->shrink_timer);
-
- if (rchan->init_buf)
- return;
-
- if (rchan->resizing || rchan->replace_buffer)
- return;
-
- if (using_lockless(rchan))
- cur_idx = idx(rchan);
- else
- cur_idx = relay_get_offset(rchan, NULL);
-
- shrink_to_nbufs = can_shrink(rchan, cur_idx);
- if (shrink_to_nbufs != 0 && reset_index(rchan, cur_idx) == 0) {
- update_readers_consumed(rchan, rchan->bufs_consumed, 0);
- rchan->callbacks->needs_resize(rchan->id,
- RELAY_RESIZE_SHRINK,
- rchan->buf_size,
- shrink_to_nbufs);
- }
-}
-
-/**
- * init_shrink_timer: - Start timer used to check shrinkability.
- * @rchan: the channel
- */
-void
-init_shrink_timer(struct rchan *rchan)
-{
- if (rchan->resize_min) {
- init_timer(&rchan->shrink_timer);
- rchan->shrink_timer.function = shrink_check;
- rchan->shrink_timer.data = (unsigned long)rchan;
- rchan->shrink_timer.expires = jiffies + SHRINK_TIMER_SECS * HZ;
- add_timer(&rchan->shrink_timer);
- }
-}
-
-
-/**
- * alloc_new_pages - allocate new pages for expanding buffer
- * @rchan: the channel
- *
- * Returns 0 on success, negative otherwise.
- */
-static int
-alloc_new_pages(struct rchan *rchan)
-{
- int new_pages_size, err;
-
- if (unlikely(rchan->expand_page_array)) BUG();
-
- new_pages_size = rchan->resize_alloc_size - rchan->alloc_size;
- rchan->expand_page_array = alloc_page_array(new_pages_size,
- &rchan->expand_page_count, &err);
- if (rchan->expand_page_array == NULL) {
- rchan->resize_err = -ENOMEM;
- return -ENOMEM;
- }
-
- err = populate_page_array(rchan->expand_page_array,
- rchan->expand_page_count);
- if (err) {
- rchan->resize_err = -ENOMEM;
- free_page_array(rchan->expand_page_array);
- rchan->expand_page_array = NULL;
- }
-
- return err;
-}
-
-/**
- * clear_resize_offset - helper function for buffer resizing
- * @rchan: the channel
- *
- * Clear the saved offset change.
- */
-static inline void
-clear_resize_offset(struct rchan *rchan)
-{
- rchan->resize_offset.ge = 0UL;
- rchan->resize_offset.le = 0UL;
- rchan->resize_offset.delta = 0;
-}
-
-/**
- * save_resize_offset - helper function for buffer resizing
- * @rchan: the channel
- * @ge: affected region ge this
- * @le: affected region le this
- * @delta: apply this delta
- *
- * Save a resize offset.
- */
-static inline void
-save_resize_offset(struct rchan *rchan, u32 ge, u32 le, int delta)
-{
- rchan->resize_offset.ge = ge;
- rchan->resize_offset.le = le;
- rchan->resize_offset.delta = delta;
-}
-
-/**
- * update_file_offset - apply offset change to reader
- * @reader: the channel reader
- * @change_idx: the offset index into the offsets array
- *
- * Returns non-zero if the offset was applied.
- *
- * Apply the offset delta saved in change_idx to the reader's
- * current read position.
- */
-static inline int
-update_file_offset(struct rchan_reader *reader)
-{
- int applied = 0;
- struct rchan *rchan = reader->rchan;
- u32 f_pos;
- int delta = reader->rchan->resize_offset.delta;
-
- if (reader->vfs_reader)
- f_pos = (u32)reader->pos.file->f_pos;
- else
- f_pos = reader->pos.f_pos;
-
- if (f_pos == relay_get_offset(rchan, NULL))
- return 0;
-
- if ((f_pos >= rchan->resize_offset.ge - 1) &&
- (f_pos <= rchan->resize_offset.le)) {
- if (reader->vfs_reader)
- reader->pos.file->f_pos += delta;
- else
- reader->pos.f_pos += delta;
- applied = 1;
- }
-
- return applied;
-}
-
-/**
- * update_file_offsets - apply offset change to readers
- * @rchan: the channel
- *
- * Apply the saved offset deltas to all files open on the channel.
- */
-static inline void
-update_file_offsets(struct rchan *rchan)
-{
- struct list_head *p;
- struct rchan_reader *reader;
-
- read_lock(&rchan->open_readers_lock);
- list_for_each(p, &rchan->open_readers) {
- reader = list_entry(p, struct rchan_reader, list);
- if (update_file_offset(reader))
- reader->offset_changed = 1;
- }
- read_unlock(&rchan->open_readers_lock);
-}
-
-/**
- * setup_expand_buf - setup expand buffer for replacement
- * @rchan: the channel
- * @newsize: the size of the new buffer
- * @oldsize: the size of the old buffer
- * @old_n_bufs: the number of sub-buffers in the old buffer
- *
- * Inserts new pages into the old buffer to create a larger
- * new channel buffer, splitting them at old_cur_idx, the bottom
- * half of the old buffer going to the bottom of the new, likewise
- * for the top half.
- */
-static void
-setup_expand_buf(struct rchan *rchan, int newsize, int oldsize, u32 old_n_bufs)
-{
- u32 cur_idx;
- int cur_bufno, delta, i, j;
- u32 ge, le;
- int cur_pageno;
- u32 free_bufs, free_pages;
- u32 free_pages_in_cur_buf;
- u32 free_bufs_to_end;
- u32 cur_pages = rchan->alloc_size >> PAGE_SHIFT;
- u32 pages_per_buf = cur_pages / rchan->n_bufs;
- u32 bufs_ready = rchan->bufs_produced - rchan->bufs_consumed;
-
- if (!rchan->resize_page_array || !rchan->expand_page_array ||
- !rchan->buf_page_array)
- return;
-
- if (bufs_ready >= rchan->n_bufs) {
- bufs_ready = rchan->n_bufs;
- free_bufs = 0;
- } else
- free_bufs = rchan->n_bufs - bufs_ready - 1;
-
- cur_idx = relay_get_offset(rchan, NULL);
- cur_pageno = cur_idx / PAGE_SIZE;
- cur_bufno = cur_idx / rchan->buf_size;
-
- free_pages_in_cur_buf = (pages_per_buf - 1) - (cur_pageno % pages_per_buf);
- free_pages = free_bufs * pages_per_buf + free_pages_in_cur_buf;
- free_bufs_to_end = (rchan->n_bufs - 1) - cur_bufno;
- if (free_bufs >= free_bufs_to_end) {
- free_pages = free_bufs_to_end * pages_per_buf + free_pages_in_cur_buf;
- free_bufs = free_bufs_to_end;
- }
-
- for (i = 0, j = 0; i <= cur_pageno + free_pages; i++, j++)
- rchan->resize_page_array[j] = rchan->buf_page_array[i];
- for (i = 0; i < rchan->expand_page_count; i++, j++)
- rchan->resize_page_array[j] = rchan->expand_page_array[i];
- for (i = cur_pageno + free_pages + 1; i < rchan->buf_page_count; i++, j++)
- rchan->resize_page_array[j] = rchan->buf_page_array[i];
-
- delta = newsize - oldsize;
- ge = (cur_pageno + 1 + free_pages) * PAGE_SIZE;
- le = oldsize;
- save_resize_offset(rchan, ge, le, delta);
-
- rchan->expand_buf_id = rchan->buf_id + 1 + free_bufs;
-}
-
-/**
- * setup_shrink_buf - setup shrink buffer for replacement
- * @rchan: the channel
- *
- * Removes pages from the old buffer to create a smaller
- * new channel buffer.
- */
-static void
-setup_shrink_buf(struct rchan *rchan)
-{
- int i;
- int copy_end_page;
-
- if (!rchan->resize_page_array || !rchan->shrink_page_array ||
- !rchan->buf_page_array)
- return;
-
- copy_end_page = rchan->resize_alloc_size / PAGE_SIZE;
-
- for (i = 0; i < copy_end_page; i++)
- rchan->resize_page_array[i] = rchan->buf_page_array[i];
-}
-
-/**
- * cleanup_failed_alloc - relaybuf_alloc helper
- */
-static void
-cleanup_failed_alloc(struct rchan *rchan)
-{
- if (rchan->expand_page_array) {
- depopulate_page_array(rchan->expand_page_array,
- rchan->expand_page_count);
- free_page_array(rchan->expand_page_array);
- rchan->expand_page_array = NULL;
- rchan->expand_page_count = 0;
- } else if (rchan->shrink_page_array) {
- free_page_array(rchan->shrink_page_array);
- rchan->shrink_page_array = NULL;
- rchan->shrink_page_count = 0;
- }
-
- if (rchan->resize_page_array) {
- free_page_array(rchan->resize_page_array);
- rchan->resize_page_array = NULL;
- rchan->resize_page_count = 0;
- }
-}
-
-/**
- * relaybuf_alloc - allocate a new resized channel buffer
- * @private: pointer to the channel struct
- *
- * Internal - manages the allocation and remapping of new channel
- * buffers.
- */
-static void
-relaybuf_alloc(void *private)
-{
- struct rchan *rchan = (struct rchan *)private;
- int i, j, err;
- u32 old_cur_idx;
- int free_size;
- int free_start_page, free_end_page;
- u32 newsize, oldsize;
-
- if (rchan->resize_alloc_size > rchan->alloc_size) {
- err = alloc_new_pages(rchan);
- if (err) goto cleanup;
- } else {
- free_size = rchan->alloc_size - rchan->resize_alloc_size;
- BUG_ON(free_size <= 0);
- rchan->shrink_page_array = alloc_page_array(free_size,
- &rchan->shrink_page_count, &err);
- if (rchan->shrink_page_array == NULL)
- goto cleanup;
- free_start_page = rchan->resize_alloc_size / PAGE_SIZE;
- free_end_page = rchan->alloc_size / PAGE_SIZE;
- for (i = 0, j = free_start_page; j < free_end_page; i++, j++)
- rchan->shrink_page_array[i] = rchan->buf_page_array[j];
- }
-
- rchan->resize_page_array = alloc_page_array(rchan->resize_alloc_size,
- &rchan->resize_page_count, &err);
- if (rchan->resize_page_array == NULL)
- goto cleanup;
-
- old_cur_idx = relay_get_offset(rchan, NULL);
- clear_resize_offset(rchan);
- newsize = rchan->resize_alloc_size;
- oldsize = rchan->alloc_size;
- if (newsize > oldsize)
- setup_expand_buf(rchan, newsize, oldsize, rchan->n_bufs);
- else
- setup_shrink_buf(rchan);
-
- rchan->resize_buf = vmap(rchan->resize_page_array, rchan->resize_page_count, GFP_KERNEL, PAGE_KERNEL);
-
- if (rchan->resize_buf == NULL)
- goto cleanup;
-
- rchan->replace_buffer = 1;
- rchan->resizing = 0;
-
- rchan->callbacks->needs_resize(rchan->id, RELAY_RESIZE_REPLACE, 0, 0);
- return;
-
-cleanup:
- cleanup_failed_alloc(rchan);
- rchan->resize_err = -ENOMEM;
- return;
-}
-
-/**
- * relaybuf_free - free a resized channel buffer
- * @private: pointer to the channel struct
- *
- * Internal - manages the de-allocation and unmapping of old channel
- * buffers.
- */
-static void
-relaybuf_free(void *private)
-{
- struct free_rchan_buf *free_buf = (struct free_rchan_buf *)private;
- int i;
-
- if (free_buf->unmap_buf)
- vunmap(free_buf->unmap_buf);
-
- for (i = 0; i < 3; i++) {
- if (!free_buf->page_array[i].array)
- continue;
- if (free_buf->page_array[i].count)
- depopulate_page_array(free_buf->page_array[i].array,
- free_buf->page_array[i].count);
- free_page_array(free_buf->page_array[i].array);
- }
-
- kfree(free_buf);
-}
-
-/**
- * calc_order - determine the power-of-2 order of a resize
- * @high: the larger size
- * @low: the smaller size
- *
- * Returns order
- */
-static inline int
-calc_order(u32 high, u32 low)
-{
- int order = 0;
-
- if (!high || !low || high <= low)
- return 0;
-
- while (high > low) {
- order++;
- high /= 2;
- }
-
- return order;
-}
-
-/**
- * check_size - check the sanity of the requested channel size
- * @rchan: the channel
- * @nbufs: the new number of sub-buffers
- * @err: return code
- *
- * Returns the non-zero total buffer size if ok, otherwise 0 and
- * sets errcode if not.
- */
-static inline u32
-check_size(struct rchan *rchan, u32 nbufs, int *err)
-{
- u32 new_channel_size = 0;
-
- *err = 0;
-
- if (nbufs > rchan->n_bufs) {
- rchan->resize_order = calc_order(nbufs, rchan->n_bufs);
- if (!rchan->resize_order) {
- *err = -EINVAL;
- goto out;
- }
-
- new_channel_size = rchan->buf_size * nbufs;
- if (new_channel_size > rchan->resize_max) {
- *err = -EINVAL;
- goto out;
- }
- } else if (nbufs < rchan->n_bufs) {
- if (rchan->n_bufs < 2) {
- *err = -EINVAL;
- goto out;
- }
- rchan->resize_order = -calc_order(rchan->n_bufs, nbufs);
- if (!rchan->resize_order) {
- *err = -EINVAL;
- goto out;
- }
-
- new_channel_size = rchan->buf_size * nbufs;
- if (new_channel_size < rchan->resize_min) {
- *err = -EINVAL;
- goto out;
- }
- } else
- *err = -EINVAL;
-out:
- return new_channel_size;
-}
-
-/**
- * __relay_realloc_buffer - allocate a new channel buffer
- * @rchan: the channel
- * @new_nbufs: the new number of sub-buffers
- * @async: do the allocation using a work queue
- *
- * Internal - see relay_realloc_buffer() for details.
- */
-static int
-__relay_realloc_buffer(struct rchan *rchan, u32 new_nbufs, int async)
-{
- u32 new_channel_size;
- int err = 0;
-
- if (new_nbufs == rchan->n_bufs)
- return -EINVAL;
-
- if (down_trylock(&rchan->resize_sem))
- return -EBUSY;
-
- if (rchan->init_buf) {
- err = -EPERM;
- goto out;
- }
-
- if (rchan->replace_buffer) {
- err = -EBUSY;
- goto out;
- }
-
- if (rchan->resizing) {
- err = -EBUSY;
- goto out;
- } else
- rchan->resizing = 1;
-
- if (rchan->resize_failures > MAX_RESIZE_FAILURES) {
- err = -ENOMEM;
- goto out;
- }
-
- new_channel_size = check_size(rchan, new_nbufs, &err);
- if (err)
- goto out;
-
- rchan->resize_n_bufs = new_nbufs;
- rchan->resize_buf_size = rchan->buf_size;
- rchan->resize_alloc_size = FIX_SIZE(new_channel_size);
-
- if (async) {
- INIT_WORK(&rchan->work, relaybuf_alloc, rchan);
- schedule_delayed_work(&rchan->work, 1);
- } else
- relaybuf_alloc((void *)rchan);
-out:
- up(&rchan->resize_sem);
-
- return err;
-}
-
-/**
- * relay_realloc_buffer - allocate a new channel buffer
- * @rchan_id: the channel id
- * @bufsize: the new sub-buffer size
- * @nbufs: the new number of sub-buffers
- *
- * Allocates a new channel buffer using the specified sub-buffer size
- * and count. If async is non-zero, the allocation is done in the
- * background using a work queue. When the allocation has completed,
- * the needs_resize() callback is called with a resize_type of
- * RELAY_RESIZE_REPLACE. This function doesn't replace the old buffer
- * with the new - see relay_replace_buffer(). See
- * Documentation/filesystems/relayfs.txt for more details.
- *
- * Returns 0 on success, or errcode if the channel is busy or if
- * the allocation couldn't happen for some reason.
- */
-int
-relay_realloc_buffer(int rchan_id, u32 new_nbufs, int async)
-{
- int err;
-
- struct rchan *rchan;
-
- rchan = rchan_get(rchan_id);
- if (rchan == NULL)
- return -EBADF;
-
- err = __relay_realloc_buffer(rchan, new_nbufs, async);
-
- rchan_put(rchan);
-
- return err;
-}
-
-/**
- * expand_cancel_check - check whether the current expand needs canceling
- * @rchan: the channel
- *
- * Returns 1 if the expand should be canceled, 0 otherwise.
- */
-static int
-expand_cancel_check(struct rchan *rchan)
-{
- if (rchan->buf_id >= rchan->expand_buf_id)
- return 1;
- else
- return 0;
-}
-
-/**
- * shrink_cancel_check - check whether the current shrink needs canceling
- * @rchan: the channel
- *
- * Returns 1 if the shrink should be canceled, 0 otherwise.
- */
-static int
-shrink_cancel_check(struct rchan *rchan, u32 newsize)
-{
- u32 active_bufs = rchan->bufs_produced - rchan->bufs_consumed + 1;
- u32 cur_idx = relay_get_offset(rchan, NULL);
-
- if (cur_idx >= newsize)
- return 1;
-
- if (active_bufs > 1)
- return 1;
-
- return 0;
-}
-
-/**
- * switch_rchan_buf - do_replace_buffer helper
- */
-static void
-switch_rchan_buf(struct rchan *rchan,
- int newsize,
- int oldsize,
- u32 old_nbufs,
- u32 cur_idx)
-{
- u32 newbufs, cur_bufno;
- int i;
-
- cur_bufno = cur_idx / rchan->buf_size;
-
- rchan->buf = rchan->resize_buf;
- rchan->alloc_size = rchan->resize_alloc_size;
- rchan->n_bufs = rchan->resize_n_bufs;
-
- if (newsize > oldsize) {
- u32 ge = rchan->resize_offset.ge;
- u32 moved_buf = ge / rchan->buf_size;
-
- newbufs = (newsize - oldsize) / rchan->buf_size;
- for (i = moved_buf; i < old_nbufs; i++) {
- if (using_lockless(rchan))
- atomic_set(&fill_count(rchan, i + newbufs),
- atomic_read(&fill_count(rchan, i)));
- rchan->unused_bytes[i + newbufs] = rchan->unused_bytes[i];
- }
- for (i = moved_buf; i < moved_buf + newbufs; i++) {
- if (using_lockless(rchan))
- atomic_set(&fill_count(rchan, i),
- (int)RELAY_BUF_SIZE(offset_bits(rchan)));
- rchan->unused_bytes[i] = 0;
- }
- }
-
- rchan->buf_idx = cur_bufno;
-
- if (!using_lockless(rchan)) {
- cur_write_pos(rchan) = rchan->buf + cur_idx;
- write_buf(rchan) = rchan->buf + cur_bufno * rchan->buf_size;
- write_buf_end(rchan) = write_buf(rchan) + rchan->buf_size;
- write_limit(rchan) = write_buf_end(rchan) - rchan->end_reserve;
- } else {
- idx(rchan) &= idx_mask(rchan);
- bufno_bits(rchan) += rchan->resize_order;
- idx_mask(rchan) =
- (1UL << (bufno_bits(rchan) + offset_bits(rchan))) - 1;
- }
-}
-
-/**
- * do_replace_buffer - does the work of channel buffer replacement
- * @rchan: the channel
- * @newsize: new channel buffer size
- * @oldsize: old channel buffer size
- * @old_n_bufs: old channel sub-buffer count
- *
- * Returns 0 if replacement happened, 1 if canceled
- *
- * Does the work of switching buffers and fixing everything up
- * so the channel can continue with a new size.
- */
-static int
-do_replace_buffer(struct rchan *rchan,
- int newsize,
- int oldsize,
- u32 old_nbufs)
-{
- u32 cur_idx;
- int err = 0;
- int canceled;
-
- cur_idx = relay_get_offset(rchan, NULL);
-
- if (newsize > oldsize)
- canceled = expand_cancel_check(rchan);
- else
- canceled = shrink_cancel_check(rchan, newsize);
-
- if (canceled) {
- err = -EAGAIN;
- goto out;
- }
-
- switch_rchan_buf(rchan, newsize, oldsize, old_nbufs, cur_idx);
-
- if (rchan->resize_offset.delta)
- update_file_offsets(rchan);
-
- atomic_set(&rchan->suspended, 0);
-
- rchan->old_buf_page_array = rchan->buf_page_array;
- rchan->buf_page_array = rchan->resize_page_array;
- rchan->buf_page_count = rchan->resize_page_count;
- rchan->resize_page_array = NULL;
- rchan->resize_page_count = 0;
- rchan->resize_buf = NULL;
- rchan->resize_buf_size = 0;
- rchan->resize_alloc_size = 0;
- rchan->resize_n_bufs = 0;
- rchan->resize_err = 0;
- rchan->resize_order = 0;
-out:
- rchan->callbacks->needs_resize(rchan->id,
- RELAY_RESIZE_REPLACED,
- rchan->buf_size,
- rchan->n_bufs);
- return err;
-}
-
-/**
- * add_free_page_array - add a page_array to be freed
- * @free_rchan_buf: the free_rchan_buf struct
- * @page_array: the page array to free
- * @page_count: the number of pages to free, 0 to free the array only
- *
- * Internal - Used add page_arrays to be freed asynchronously.
- */
-static inline void
-add_free_page_array(struct free_rchan_buf *free_rchan_buf,
- struct page **page_array, int page_count)
-{
- int cur = free_rchan_buf->cur++;
-
- free_rchan_buf->page_array[cur].array = page_array;
- free_rchan_buf->page_array[cur].count = page_count;
-}
-
-/**
- * free_replaced_buffer - free a channel's old buffer
- * @rchan: the channel
- * @oldbuf: the old buffer
- * @oldsize: old buffer size
- *
- * Frees a channel buffer via work queue.
- */
-static int
-free_replaced_buffer(struct rchan *rchan, char *oldbuf, int oldsize)
-{
- struct free_rchan_buf *free_buf;
-
- free_buf = kmalloc(sizeof(struct free_rchan_buf), GFP_ATOMIC);
- if (!free_buf)
- return -ENOMEM;
- memset(free_buf, 0, sizeof(struct free_rchan_buf));
-
- free_buf->unmap_buf = oldbuf;
- add_free_page_array(free_buf, rchan->old_buf_page_array, 0);
- rchan->old_buf_page_array = NULL;
- add_free_page_array(free_buf, rchan->expand_page_array, 0);
- add_free_page_array(free_buf, rchan->shrink_page_array, rchan->shrink_page_count);
-
- rchan->expand_page_array = NULL;
- rchan->expand_page_count = 0;
- rchan->shrink_page_array = NULL;
- rchan->shrink_page_count = 0;
-
- INIT_WORK(&free_buf->work, relaybuf_free, free_buf);
- schedule_delayed_work(&free_buf->work, 1);
-
- return 0;
-}
-
-/**
- * free_canceled_resize - free buffers allocated for a canceled resize
- * @rchan: the channel
- *
- * Frees canceled buffers via work queue.
- */
-static int
-free_canceled_resize(struct rchan *rchan)
-{
- struct free_rchan_buf *free_buf;
-
- free_buf = kmalloc(sizeof(struct free_rchan_buf), GFP_ATOMIC);
- if (!free_buf)
- return -ENOMEM;
- memset(free_buf, 0, sizeof(struct free_rchan_buf));
-
- if (rchan->resize_alloc_size > rchan->alloc_size)
- add_free_page_array(free_buf, rchan->expand_page_array, rchan->expand_page_count);
- else
- add_free_page_array(free_buf, rchan->shrink_page_array, 0);
-
- add_free_page_array(free_buf, rchan->resize_page_array, 0);
- free_buf->unmap_buf = rchan->resize_buf;
-
- rchan->expand_page_array = NULL;
- rchan->expand_page_count = 0;
- rchan->shrink_page_array = NULL;
- rchan->shrink_page_count = 0;
- rchan->resize_page_array = NULL;
- rchan->resize_page_count = 0;
- rchan->resize_buf = NULL;
-
- INIT_WORK(&free_buf->work, relaybuf_free, free_buf);
- schedule_delayed_work(&free_buf->work, 1);
-
- return 0;
-}
-
-/**
- * __relay_replace_buffer - replace channel buffer with new buffer
- * @rchan: the channel
- *
- * Internal - see relay_replace_buffer() for details.
- *
- * Returns 0 if successful, negative otherwise.
- */
-static int
-__relay_replace_buffer(struct rchan *rchan)
-{
- int oldsize;
- int err = 0;
- char *oldbuf;
-
- if (down_trylock(&rchan->resize_sem))
- return -EBUSY;
-
- if (rchan->init_buf) {
- err = -EPERM;
- goto out;
- }
-
- if (!rchan->replace_buffer)
- goto out;
-
- if (rchan->resizing) {
- err = -EBUSY;
- goto out;
- }
-
- if (rchan->resize_buf == NULL) {
- err = -EINVAL;
- goto out;
- }
-
- oldbuf = rchan->buf;
- oldsize = rchan->alloc_size;
-
- err = do_replace_buffer(rchan, rchan->resize_alloc_size,
- oldsize, rchan->n_bufs);
- if (err == 0)
- err = free_replaced_buffer(rchan, oldbuf, oldsize);
- else
- err = free_canceled_resize(rchan);
-out:
- rchan->replace_buffer = 0;
- up(&rchan->resize_sem);
-
- return err;
-}
-
-/**
- * relay_replace_buffer - replace channel buffer with new buffer
- * @rchan_id: the channel id
- *
- * Replaces the current channel buffer with the new buffer allocated
- * by relay_alloc_buffer and contained in the channel struct. When the
- * replacement is complete, the needs_resize() callback is called with
- * RELAY_RESIZE_REPLACED.
- *
- * Returns 0 on success, or errcode if the channel is busy or if
- * the replacement or previous allocation didn't happen for some reason.
- */
-int
-relay_replace_buffer(int rchan_id)
-{
- int err;
-
- struct rchan *rchan;
-
- rchan = rchan_get(rchan_id);
- if (rchan == NULL)
- return -EBADF;
-
- err = __relay_replace_buffer(rchan);
-
- rchan_put(rchan);
-
- return err;
-}
-
-EXPORT_SYMBOL(relay_realloc_buffer);
-EXPORT_SYMBOL(relay_replace_buffer);
-
+++ /dev/null
-#ifndef _RELAY_RESIZE_H
-#define _RELAY_RESIZE_H
-
-/*
- * If the channel usage has been below the low water mark for more than
- * this amount of time, we can shrink the buffer if necessary.
- */
-#define SHRINK_TIMER_SECS 60
-
-/* This inspired by rtai/shmem */
-#define FIX_SIZE(x) (((x) - 1) & PAGE_MASK) + PAGE_SIZE
-
-/* Don't attempt resizing again after this many failures */
-#define MAX_RESIZE_FAILURES 1
-
-/* Trigger resizing if a resizable channel is this full */
-#define RESIZE_THRESHOLD 3 / 4
-
-/*
- * Used for deferring resized channel free
- */
-struct free_rchan_buf
-{
- char *unmap_buf;
- struct
- {
- struct page **array;
- int count;
- } page_array[3];
-
- int cur;
- struct work_struct work; /* resize de-allocation work struct */
-};
-
-extern void *
-alloc_rchan_buf(unsigned long size,
- struct page ***page_array,
- int *page_count);
-
-extern void
-free_rchan_buf(void *buf,
- struct page **page_array,
- int page_count);
-
-extern void
-expand_check(struct rchan *rchan);
-
-extern void
-init_shrink_timer(struct rchan *rchan);
-
-#endif/* _RELAY_RESIZE_H */
+++ /dev/null
-/*
- * Copyright (c) 2000-2003 Silicon Graphics, Inc. All Rights Reserved.
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of version 2 of the GNU General Public License as
- * published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it would be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
- *
- * Further, this software is distributed without any warranty that it is
- * free of the rightful claim of any third person regarding infringement
- * or the like. Any license provided herein, whether implied or
- * otherwise, applies only to this software file. Patent licenses, if
- * any, provided herein do not apply to combinations of this program with
- * other software, or any other product whatsoever.
- *
- * You should have received a copy of the GNU General Public License along
- * with this program; if not, write the Free Software Foundation, Inc., 59
- * Temple Place - Suite 330, Boston MA 02111-1307, USA.
- *
- * Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy,
- * Mountain View, CA 94043, or:
- *
- * http://www.sgi.com
- *
- * For further information regarding this notice, see:
- *
- * http://oss.sgi.com/projects/GenInfo/SGIGPLNoticeExplan/
- */
-#ifndef __XFS_SUPPORT_KMEM_H__
-#define __XFS_SUPPORT_KMEM_H__
-
-#include <linux/mm.h>
-#include <linux/highmem.h>
-#include <linux/slab.h>
-#include <linux/vmalloc.h>
-
-/*
- * Cutoff point to use vmalloc instead of kmalloc.
- */
-#define MAX_SLAB_SIZE 0x10000
-
-/*
- * XFS uses slightly different names for these due to the
- * IRIX heritage.
- */
-#define kmem_zone kmem_cache_s
-#define kmem_zone_t kmem_cache_t
-
-#define KM_SLEEP 0x0001
-#define KM_NOSLEEP 0x0002
-#define KM_NOFS 0x0004
-
-typedef unsigned long xfs_pflags_t;
-
-#define PFLAGS_TEST_FSTRANS() (current->flags & PF_FSTRANS)
-
-/* these could be nested, so we save state */
-#define PFLAGS_SET_FSTRANS(STATEP) do { \
- *(STATEP) = current->flags; \
- current->flags |= PF_FSTRANS; \
-} while (0)
-
-#define PFLAGS_CLEAR_FSTRANS(STATEP) do { \
- *(STATEP) = current->flags; \
- current->flags &= ~PF_FSTRANS; \
-} while (0)
-
-/* Restore the PF_FSTRANS state to what was saved in STATEP */
-#define PFLAGS_RESTORE_FSTRANS(STATEP) do { \
- current->flags = ((current->flags & ~PF_FSTRANS) | \
- (*(STATEP) & PF_FSTRANS)); \
-} while (0)
-
-#define PFLAGS_DUP(OSTATEP, NSTATEP) do { \
- *(NSTATEP) = *(OSTATEP); \
-} while (0)
-
-/*
- * XXX get rid of the unconditional __GFP_NOFAIL by adding
- * a KM_FAIL flag and using it where we're allowed to fail.
- */
-static __inline unsigned int
-kmem_flags_convert(int flags)
-{
- int lflags;
-
-#if DEBUG
- if (unlikely(flags & ~(KM_SLEEP|KM_NOSLEEP|KM_NOFS))) {
- printk(KERN_WARNING
- "XFS: memory allocation with wrong flags (%x)\n", flags);
- BUG();
- }
-#endif
-
- lflags = (flags & KM_NOSLEEP) ? GFP_ATOMIC : (GFP_KERNEL|__GFP_NOFAIL);
-
- /* avoid recusive callbacks to filesystem during transactions */
- if (PFLAGS_TEST_FSTRANS() || (flags & KM_NOFS))
- lflags &= ~__GFP_FS;
-
- return lflags;
-}
-
-static __inline void *
-kmem_alloc(size_t size, int flags)
-{
- if (unlikely(MAX_SLAB_SIZE < size))
- /* Avoid doing filesystem sensitive stuff to get this */
- return __vmalloc(size, kmem_flags_convert(flags), PAGE_KERNEL);
- return kmalloc(size, kmem_flags_convert(flags));
-}
-
-static __inline void *
-kmem_zalloc(size_t size, int flags)
-{
- void *ptr = kmem_alloc(size, flags);
- if (likely(ptr != NULL))
- memset(ptr, 0, size);
- return ptr;
-}
-
-static __inline void
-kmem_free(void *ptr, size_t size)
-{
- if (unlikely((unsigned long)ptr < VMALLOC_START ||
- (unsigned long)ptr >= VMALLOC_END))
- kfree(ptr);
- else
- vfree(ptr);
-}
-
-static __inline void *
-kmem_realloc(void *ptr, size_t newsize, size_t oldsize, int flags)
-{
- void *new = kmem_alloc(newsize, flags);
-
- if (likely(ptr != NULL)) {
- if (likely(new != NULL))
- memcpy(new, ptr, min(oldsize, newsize));
- kmem_free(ptr, oldsize);
- }
-
- return new;
-}
-
-static __inline kmem_zone_t *
-kmem_zone_init(int size, char *zone_name)
-{
- return kmem_cache_create(zone_name, size, 0, 0, NULL, NULL);
-}
-
-static __inline void *
-kmem_zone_alloc(kmem_zone_t *zone, int flags)
-{
- return kmem_cache_alloc(zone, kmem_flags_convert(flags));
-}
-
-static __inline void *
-kmem_zone_zalloc(kmem_zone_t *zone, int flags)
-{
- void *ptr = kmem_zone_alloc(zone, flags);
- if (likely(ptr != NULL))
- memset(ptr, 0, kmem_cache_size(zone));
- return ptr;
-}
-
-static __inline void
-kmem_zone_free(kmem_zone_t *zone, void *ptr)
-{
- kmem_cache_free(zone, ptr);
-}
-
-typedef struct shrinker *kmem_shaker_t;
-typedef int (*kmem_shake_func_t)(int, unsigned int);
-
-static __inline kmem_shaker_t
-kmem_shake_register(kmem_shake_func_t sfunc)
-{
- return set_shrinker(DEFAULT_SEEKS, sfunc);
-}
-
-static __inline void
-kmem_shake_deregister(kmem_shaker_t shrinker)
-{
- remove_shrinker(shrinker);
-}
-
-static __inline int
-kmem_shake_allow(unsigned int gfp_mask)
-{
- return (gfp_mask & __GFP_WAIT);
-}
-
-#endif /* __XFS_SUPPORT_KMEM_H__ */
+++ /dev/null
-/*
- * Copyright (c) 2000-2004 Silicon Graphics, Inc. All Rights Reserved.
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of version 2 of the GNU General Public License as
- * published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it would be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
- *
- * Further, this software is distributed without any warranty that it is
- * free of the rightful claim of any third person regarding infringement
- * or the like. Any license provided herein, whether implied or
- * otherwise, applies only to this software file. Patent licenses, if
- * any, provided herein do not apply to combinations of this program with
- * other software, or any other product whatsoever.
- *
- * You should have received a copy of the GNU General Public License along
- * with this program; if not, write the Free Software Foundation, Inc., 59
- * Temple Place - Suite 330, Boston MA 02111-1307, USA.
- *
- * Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy,
- * Mountain View, CA 94043, or:
- *
- * http://www.sgi.com
- *
- * For further information regarding this notice, see:
- *
- * http://oss.sgi.com/projects/GenInfo/SGIGPLNoticeExplan/
- */
-#ifndef __XFS_SUPPORT_MRLOCK_H__
-#define __XFS_SUPPORT_MRLOCK_H__
-
-#include <linux/rwsem.h>
-
-enum { MR_NONE, MR_ACCESS, MR_UPDATE };
-
-typedef struct {
- struct rw_semaphore mr_lock;
- int mr_writer;
-} mrlock_t;
-
-#define mrinit(mrp, name) \
- ( (mrp)->mr_writer = 0, init_rwsem(&(mrp)->mr_lock) )
-#define mrlock_init(mrp, t,n,s) mrinit(mrp, n)
-#define mrfree(mrp) do { } while (0)
-#define mraccess(mrp) mraccessf(mrp, 0)
-#define mrupdate(mrp) mrupdatef(mrp, 0)
-
-static inline void mraccessf(mrlock_t *mrp, int flags)
-{
- down_read(&mrp->mr_lock);
-}
-
-static inline void mrupdatef(mrlock_t *mrp, int flags)
-{
- down_write(&mrp->mr_lock);
- mrp->mr_writer = 1;
-}
-
-static inline int mrtryaccess(mrlock_t *mrp)
-{
- return down_read_trylock(&mrp->mr_lock);
-}
-
-static inline int mrtryupdate(mrlock_t *mrp)
-{
- if (!down_write_trylock(&mrp->mr_lock))
- return 0;
- mrp->mr_writer = 1;
- return 1;
-}
-
-static inline void mrunlock(mrlock_t *mrp)
-{
- if (mrp->mr_writer) {
- mrp->mr_writer = 0;
- up_write(&mrp->mr_lock);
- } else {
- up_read(&mrp->mr_lock);
- }
-}
-
-static inline void mrdemote(mrlock_t *mrp)
-{
- mrp->mr_writer = 0;
- downgrade_write(&mrp->mr_lock);
-}
-
-#ifdef DEBUG
-/*
- * Debug-only routine, without some platform-specific asm code, we can
- * now only answer requests regarding whether we hold the lock for write
- * (reader state is outside our visibility, we only track writer state).
- * Note: means !ismrlocked would give false positivies, so don't do that.
- */
-static inline int ismrlocked(mrlock_t *mrp, int type)
-{
- if (mrp && type == MR_UPDATE)
- return mrp->mr_writer;
- return 1;
-}
-#endif
-
-#endif /* __XFS_SUPPORT_MRLOCK_H__ */
+++ /dev/null
-/*
- * Copyright (c) 2000-2003 Silicon Graphics, Inc. All Rights Reserved.
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of version 2 of the GNU General Public License as
- * published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it would be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
- *
- * Further, this software is distributed without any warranty that it is
- * free of the rightful claim of any third person regarding infringement
- * or the like. Any license provided herein, whether implied or
- * otherwise, applies only to this software file. Patent licenses, if
- * any, provided herein do not apply to combinations of this program with
- * other software, or any other product whatsoever.
- *
- * You should have received a copy of the GNU General Public License along
- * with this program; if not, write the Free Software Foundation, Inc., 59
- * Temple Place - Suite 330, Boston MA 02111-1307, USA.
- *
- * Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy,
- * Mountain View, CA 94043, or:
- *
- * http://www.sgi.com
- *
- * For further information regarding this notice, see:
- *
- * http://oss.sgi.com/projects/GenInfo/SGIGPLNoticeExplan/
- */
-#ifndef __XFS_SUPPORT_MUTEX_H__
-#define __XFS_SUPPORT_MUTEX_H__
-
-#include <linux/spinlock.h>
-#include <asm/semaphore.h>
-
-/*
- * Map the mutex'es from IRIX to Linux semaphores.
- *
- * Destroy just simply initializes to -99 which should block all other
- * callers.
- */
-#define MUTEX_DEFAULT 0x0
-typedef struct semaphore mutex_t;
-
-#define mutex_init(lock, type, name) sema_init(lock, 1)
-#define mutex_destroy(lock) sema_init(lock, -99)
-#define mutex_lock(lock, num) down(lock)
-#define mutex_trylock(lock) (down_trylock(lock) ? 0 : 1)
-#define mutex_unlock(lock) up(lock)
-
-#endif /* __XFS_SUPPORT_MUTEX_H__ */
+++ /dev/null
-/*
- * Copyright (c) 2000-2002 Silicon Graphics, Inc. All Rights Reserved.
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of version 2 of the GNU General Public License as
- * published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it would be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
- *
- * Further, this software is distributed without any warranty that it is
- * free of the rightful claim of any third person regarding infringement
- * or the like. Any license provided herein, whether implied or
- * otherwise, applies only to this software file. Patent licenses, if
- * any, provided herein do not apply to combinations of this program with
- * other software, or any other product whatsoever.
- *
- * You should have received a copy of the GNU General Public License along
- * with this program; if not, write the Free Software Foundation, Inc., 59
- * Temple Place - Suite 330, Boston MA 02111-1307, USA.
- *
- * Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy,
- * Mountain View, CA 94043, or:
- *
- * http://www.sgi.com
- *
- * For further information regarding this notice, see:
- *
- * http://oss.sgi.com/projects/GenInfo/SGIGPLNoticeExplan/
- */
-#ifndef __XFS_SUPPORT_SEMA_H__
-#define __XFS_SUPPORT_SEMA_H__
-
-#include <linux/time.h>
-#include <linux/wait.h>
-#include <asm/atomic.h>
-#include <asm/semaphore.h>
-
-/*
- * sema_t structure just maps to struct semaphore in Linux kernel.
- */
-
-typedef struct semaphore sema_t;
-
-#define init_sema(sp, val, c, d) sema_init(sp, val)
-#define initsema(sp, val) sema_init(sp, val)
-#define initnsema(sp, val, name) sema_init(sp, val)
-#define psema(sp, b) down(sp)
-#define vsema(sp) up(sp)
-#define valusema(sp) (atomic_read(&(sp)->count))
-#define freesema(sema)
-
-/*
- * Map cpsema (try to get the sema) to down_trylock. We need to switch
- * the return values since cpsema returns 1 (acquired) 0 (failed) and
- * down_trylock returns the reverse 0 (acquired) 1 (failed).
- */
-
-#define cpsema(sp) (down_trylock(sp) ? 0 : 1)
-
-/*
- * Didn't do cvsema(sp). Not sure how to map this to up/down/...
- * It does a vsema if the values is < 0 other wise nothing.
- */
-
-#endif /* __XFS_SUPPORT_SEMA_H__ */
+++ /dev/null
-/*
- * Copyright (c) 2000-2002 Silicon Graphics, Inc. All Rights Reserved.
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of version 2 of the GNU General Public License as
- * published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it would be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
- *
- * Further, this software is distributed without any warranty that it is
- * free of the rightful claim of any third person regarding infringement
- * or the like. Any license provided herein, whether implied or
- * otherwise, applies only to this software file. Patent licenses, if
- * any, provided herein do not apply to combinations of this program with
- * other software, or any other product whatsoever.
- *
- * You should have received a copy of the GNU General Public License along
- * with this program; if not, write the Free Software Foundation, Inc., 59
- * Temple Place - Suite 330, Boston MA 02111-1307, USA.
- *
- * Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy,
- * Mountain View, CA 94043, or:
- *
- * http://www.sgi.com
- *
- * For further information regarding this notice, see:
- *
- * http://oss.sgi.com/projects/GenInfo/SGIGPLNoticeExplan/
- */
-#ifndef __XFS_SUPPORT_SPIN_H__
-#define __XFS_SUPPORT_SPIN_H__
-
-#include <linux/sched.h> /* preempt needs this */
-#include <linux/spinlock.h>
-
-/*
- * Map lock_t from IRIX to Linux spinlocks.
- *
- * Note that linux turns on/off spinlocks depending on CONFIG_SMP.
- * We don't need to worry about SMP or not here.
- */
-
-#define SPLDECL(s) unsigned long s
-
-typedef spinlock_t lock_t;
-
-#define spinlock_init(lock, name) spin_lock_init(lock)
-#define spinlock_destroy(lock)
-
-static inline unsigned long mutex_spinlock(lock_t *lock)
-{
- spin_lock(lock);
- return 0;
-}
-
-/*ARGSUSED*/
-static inline void mutex_spinunlock(lock_t *lock, unsigned long s)
-{
- spin_unlock(lock);
-}
-
-static inline void nested_spinlock(lock_t *lock)
-{
- spin_lock(lock);
-}
-
-static inline void nested_spinunlock(lock_t *lock)
-{
- spin_unlock(lock);
-}
-
-#endif /* __XFS_SUPPORT_SPIN_H__ */
+++ /dev/null
-/*
- * Copyright (c) 2000-2002 Silicon Graphics, Inc. All Rights Reserved.
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of version 2 of the GNU General Public License as
- * published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it would be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
- *
- * Further, this software is distributed without any warranty that it is
- * free of the rightful claim of any third person regarding infringement
- * or the like. Any license provided herein, whether implied or
- * otherwise, applies only to this software file. Patent licenses, if
- * any, provided herein do not apply to combinations of this program with
- * other software, or any other product whatsoever.
- *
- * You should have received a copy of the GNU General Public License along
- * with this program; if not, write the Free Software Foundation, Inc., 59
- * Temple Place - Suite 330, Boston MA 02111-1307, USA.
- *
- * Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy,
- * Mountain View, CA 94043, or:
- *
- * http://www.sgi.com
- *
- * For further information regarding this notice, see:
- *
- * http://oss.sgi.com/projects/GenInfo/SGIGPLNoticeExplan/
- */
-#ifndef __XFS_SUPPORT_SV_H__
-#define __XFS_SUPPORT_SV_H__
-
-#include <linux/wait.h>
-#include <linux/sched.h>
-#include <linux/spinlock.h>
-
-/*
- * Synchronisation variables.
- *
- * (Parameters "pri", "svf" and "rts" are not implemented)
- */
-
-typedef struct sv_s {
- wait_queue_head_t waiters;
-} sv_t;
-
-#define SV_FIFO 0x0 /* sv_t is FIFO type */
-#define SV_LIFO 0x2 /* sv_t is LIFO type */
-#define SV_PRIO 0x4 /* sv_t is PRIO type */
-#define SV_KEYED 0x6 /* sv_t is KEYED type */
-#define SV_DEFAULT SV_FIFO
-
-
-static inline void _sv_wait(sv_t *sv, spinlock_t *lock, int state,
- unsigned long timeout)
-{
- DECLARE_WAITQUEUE(wait, current);
-
- add_wait_queue_exclusive(&sv->waiters, &wait);
- __set_current_state(state);
- spin_unlock(lock);
-
- schedule_timeout(timeout);
-
- remove_wait_queue(&sv->waiters, &wait);
-}
-
-#define init_sv(sv,type,name,flag) \
- init_waitqueue_head(&(sv)->waiters)
-#define sv_init(sv,flag,name) \
- init_waitqueue_head(&(sv)->waiters)
-#define sv_destroy(sv) \
- /*NOTHING*/
-#define sv_wait(sv, pri, lock, s) \
- _sv_wait(sv, lock, TASK_UNINTERRUPTIBLE, MAX_SCHEDULE_TIMEOUT)
-#define sv_wait_sig(sv, pri, lock, s) \
- _sv_wait(sv, lock, TASK_INTERRUPTIBLE, MAX_SCHEDULE_TIMEOUT)
-#define sv_timedwait(sv, pri, lock, s, svf, ts, rts) \
- _sv_wait(sv, lock, TASK_UNINTERRUPTIBLE, timespec_to_jiffies(ts))
-#define sv_timedwait_sig(sv, pri, lock, s, svf, ts, rts) \
- _sv_wait(sv, lock, TASK_INTERRUPTIBLE, timespec_to_jiffies(ts))
-#define sv_signal(sv) \
- wake_up(&(sv)->waiters)
-#define sv_broadcast(sv) \
- wake_up_all(&(sv)->waiters)
-
-#endif /* __XFS_SUPPORT_SV_H__ */
+++ /dev/null
-/*
- * Copyright (c) 2000-2003 Silicon Graphics, Inc. All Rights Reserved.
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of version 2 of the GNU General Public License as
- * published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it would be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
- *
- * Further, this software is distributed without any warranty that it is
- * free of the rightful claim of any third person regarding infringement
- * or the like. Any license provided herein, whether implied or
- * otherwise, applies only to this software file. Patent licenses, if
- * any, provided herein do not apply to combinations of this program with
- * other software, or any other product whatsoever.
- *
- * You should have received a copy of the GNU General Public License along
- * with this program; if not, write the Free Software Foundation, Inc., 59
- * Temple Place - Suite 330, Boston MA 02111-1307, USA.
- *
- * Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy,
- * Mountain View, CA 94043, or:
- *
- * http://www.sgi.com
- *
- * For further information regarding this notice, see:
- *
- * http://oss.sgi.com/projects/GenInfo/SGIGPLNoticeExplan/
- */
-#ifndef __XFS_SUPPORT_TIME_H__
-#define __XFS_SUPPORT_TIME_H__
-
-#include <linux/sched.h>
-#include <linux/time.h>
-
-typedef struct timespec timespec_t;
-
-static inline void delay(long ticks)
-{
- current->state = TASK_UNINTERRUPTIBLE;
- schedule_timeout(ticks);
-}
-
-static inline void nanotime(struct timespec *tvp)
-{
- *tvp = CURRENT_TIME;
-}
-
-#endif /* __XFS_SUPPORT_TIME_H__ */
+++ /dev/null
-/*
- * Copyright (c) 2000-2004 Silicon Graphics, Inc. All Rights Reserved.
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of version 2 of the GNU General Public License as
- * published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it would be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
- *
- * Further, this software is distributed without any warranty that it is
- * free of the rightful claim of any third person regarding infringement
- * or the like. Any license provided herein, whether implied or
- * otherwise, applies only to this software file. Patent licenses, if
- * any, provided herein do not apply to combinations of this program with
- * other software, or any other product whatsoever.
- *
- * You should have received a copy of the GNU General Public License along
- * with this program; if not, write the Free Software Foundation, Inc., 59
- * Temple Place - Suite 330, Boston MA 02111-1307, USA.
- *
- * Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy,
- * Mountain View, CA 94043, or:
- *
- * http://www.sgi.com
- *
- * For further information regarding this notice, see:
- *
- * http://oss.sgi.com/projects/GenInfo/SGIGPLNoticeExplan/
- */
-
-#include "xfs.h"
-#include "xfs_inum.h"
-#include "xfs_log.h"
-#include "xfs_sb.h"
-#include "xfs_dir.h"
-#include "xfs_dir2.h"
-#include "xfs_trans.h"
-#include "xfs_dmapi.h"
-#include "xfs_mount.h"
-#include "xfs_bmap_btree.h"
-#include "xfs_alloc_btree.h"
-#include "xfs_ialloc_btree.h"
-#include "xfs_alloc.h"
-#include "xfs_btree.h"
-#include "xfs_attr_sf.h"
-#include "xfs_dir_sf.h"
-#include "xfs_dir2_sf.h"
-#include "xfs_dinode.h"
-#include "xfs_inode.h"
-#include "xfs_error.h"
-#include "xfs_rw.h"
-#include "xfs_iomap.h"
-#include <linux/mpage.h>
-
-STATIC void xfs_count_page_state(struct page *, int *, int *, int *);
-STATIC void xfs_convert_page(struct inode *, struct page *,
- xfs_iomap_t *, void *, int, int);
-
-#if defined(XFS_RW_TRACE)
-void
-xfs_page_trace(
- int tag,
- struct inode *inode,
- struct page *page,
- int mask)
-{
- xfs_inode_t *ip;
- bhv_desc_t *bdp;
- vnode_t *vp = LINVFS_GET_VP(inode);
- loff_t isize = i_size_read(inode);
- loff_t offset = page->index << PAGE_CACHE_SHIFT;
- int delalloc = -1, unmapped = -1, unwritten = -1;
-
- if (page_has_buffers(page))
- xfs_count_page_state(page, &delalloc, &unmapped, &unwritten);
-
- bdp = vn_bhv_lookup(VN_BHV_HEAD(vp), &xfs_vnodeops);
- ip = XFS_BHVTOI(bdp);
- if (!ip->i_rwtrace)
- return;
-
- ktrace_enter(ip->i_rwtrace,
- (void *)((unsigned long)tag),
- (void *)ip,
- (void *)inode,
- (void *)page,
- (void *)((unsigned long)mask),
- (void *)((unsigned long)((ip->i_d.di_size >> 32) & 0xffffffff)),
- (void *)((unsigned long)(ip->i_d.di_size & 0xffffffff)),
- (void *)((unsigned long)((isize >> 32) & 0xffffffff)),
- (void *)((unsigned long)(isize & 0xffffffff)),
- (void *)((unsigned long)((offset >> 32) & 0xffffffff)),
- (void *)((unsigned long)(offset & 0xffffffff)),
- (void *)((unsigned long)delalloc),
- (void *)((unsigned long)unmapped),
- (void *)((unsigned long)unwritten),
- (void *)NULL,
- (void *)NULL);
-}
-#else
-#define xfs_page_trace(tag, inode, page, mask)
-#endif
-
-void
-linvfs_unwritten_done(
- struct buffer_head *bh,
- int uptodate)
-{
- xfs_buf_t *pb = (xfs_buf_t *)bh->b_private;
-
- ASSERT(buffer_unwritten(bh));
- bh->b_end_io = NULL;
- clear_buffer_unwritten(bh);
- if (!uptodate)
- pagebuf_ioerror(pb, EIO);
- if (atomic_dec_and_test(&pb->pb_io_remaining) == 1) {
- pagebuf_iodone(pb, 1, 1);
- }
- end_buffer_async_write(bh, uptodate);
-}
-
-/*
- * Issue transactions to convert a buffer range from unwritten
- * to written extents (buffered IO).
- */
-STATIC void
-linvfs_unwritten_convert(
- xfs_buf_t *bp)
-{
- vnode_t *vp = XFS_BUF_FSPRIVATE(bp, vnode_t *);
- int error;
-
- BUG_ON(atomic_read(&bp->pb_hold) < 1);
- VOP_BMAP(vp, XFS_BUF_OFFSET(bp), XFS_BUF_SIZE(bp),
- BMAPI_UNWRITTEN, NULL, NULL, error);
- XFS_BUF_SET_FSPRIVATE(bp, NULL);
- XFS_BUF_CLR_IODONE_FUNC(bp);
- XFS_BUF_UNDATAIO(bp);
- iput(LINVFS_GET_IP(vp));
- pagebuf_iodone(bp, 0, 0);
-}
-
-/*
- * Issue transactions to convert a buffer range from unwritten
- * to written extents (direct IO).
- */
-STATIC void
-linvfs_unwritten_convert_direct(
- struct inode *inode,
- loff_t offset,
- ssize_t size,
- void *private)
-{
- ASSERT(!private || inode == (struct inode *)private);
-
- /* private indicates an unwritten extent lay beneath this IO,
- * see linvfs_get_block_core.
- */
- if (private && size > 0) {
- vnode_t *vp = LINVFS_GET_VP(inode);
- int error;
-
- VOP_BMAP(vp, offset, size, BMAPI_UNWRITTEN, NULL, NULL, error);
- }
-}
-
-STATIC int
-xfs_map_blocks(
- struct inode *inode,
- loff_t offset,
- ssize_t count,
- xfs_iomap_t *iomapp,
- int flags)
-{
- vnode_t *vp = LINVFS_GET_VP(inode);
- int error, niomaps = 1;
-
- if (((flags & (BMAPI_DIRECT|BMAPI_SYNC)) == BMAPI_DIRECT) &&
- (offset >= i_size_read(inode)))
- count = max_t(ssize_t, count, XFS_WRITE_IO_LOG);
-retry:
- VOP_BMAP(vp, offset, count, flags, iomapp, &niomaps, error);
- if ((error == EAGAIN) || (error == EIO))
- return -error;
- if (unlikely((flags & (BMAPI_WRITE|BMAPI_DIRECT)) ==
- (BMAPI_WRITE|BMAPI_DIRECT) && niomaps &&
- (iomapp->iomap_flags & IOMAP_DELAY))) {
- flags = BMAPI_ALLOCATE;
- goto retry;
- }
- if (flags & (BMAPI_WRITE|BMAPI_ALLOCATE)) {
- VMODIFY(vp);
- }
- return -error;
-}
-
-/*
- * Finds the corresponding mapping in block @map array of the
- * given @offset within a @page.
- */
-STATIC xfs_iomap_t *
-xfs_offset_to_map(
- struct page *page,
- xfs_iomap_t *iomapp,
- unsigned long offset)
-{
- loff_t full_offset; /* offset from start of file */
-
- ASSERT(offset < PAGE_CACHE_SIZE);
-
- full_offset = page->index; /* NB: using 64bit number */
- full_offset <<= PAGE_CACHE_SHIFT; /* offset from file start */
- full_offset += offset; /* offset from page start */
-
- if (full_offset < iomapp->iomap_offset)
- return NULL;
- if (iomapp->iomap_offset + iomapp->iomap_bsize > full_offset)
- return iomapp;
- return NULL;
-}
-
-STATIC void
-xfs_map_at_offset(
- struct page *page,
- struct buffer_head *bh,
- unsigned long offset,
- int block_bits,
- xfs_iomap_t *iomapp)
-{
- xfs_daddr_t bn;
- loff_t delta;
- int sector_shift;
-
- ASSERT(!(iomapp->iomap_flags & IOMAP_HOLE));
- ASSERT(!(iomapp->iomap_flags & IOMAP_DELAY));
- ASSERT(iomapp->iomap_bn != IOMAP_DADDR_NULL);
-
- delta = page->index;
- delta <<= PAGE_CACHE_SHIFT;
- delta += offset;
- delta -= iomapp->iomap_offset;
- delta >>= block_bits;
-
- sector_shift = block_bits - BBSHIFT;
- bn = iomapp->iomap_bn >> sector_shift;
- bn += delta;
- ASSERT((bn << sector_shift) >= iomapp->iomap_bn);
-
- lock_buffer(bh);
- bh->b_blocknr = bn;
- bh->b_bdev = iomapp->iomap_target->pbr_bdev;
- set_buffer_mapped(bh);
- clear_buffer_delay(bh);
-}
-
-/*
- * Look for a page at index which is unlocked and contains our
- * unwritten extent flagged buffers at its head. Returns page
- * locked and with an extra reference count, and length of the
- * unwritten extent component on this page that we can write,
- * in units of filesystem blocks.
- */
-STATIC struct page *
-xfs_probe_unwritten_page(
- struct address_space *mapping,
- pgoff_t index,
- xfs_iomap_t *iomapp,
- xfs_buf_t *pb,
- unsigned long max_offset,
- unsigned long *fsbs,
- unsigned int bbits)
-{
- struct page *page;
-
- page = find_trylock_page(mapping, index);
- if (!page)
- return 0;
- if (PageWriteback(page))
- goto out;
-
- if (page->mapping && page_has_buffers(page)) {
- struct buffer_head *bh, *head;
- unsigned long p_offset = 0;
-
- *fsbs = 0;
- bh = head = page_buffers(page);
- do {
- if (!buffer_unwritten(bh))
- break;
- if (!xfs_offset_to_map(page, iomapp, p_offset))
- break;
- if (p_offset >= max_offset)
- break;
- xfs_map_at_offset(page, bh, p_offset, bbits, iomapp);
- set_buffer_unwritten_io(bh);
- bh->b_private = pb;
- p_offset += bh->b_size;
- (*fsbs)++;
- } while ((bh = bh->b_this_page) != head);
-
- if (p_offset)
- return page;
- }
-
-out:
- unlock_page(page);
- return NULL;
-}
-
-/*
- * Look for a page at index which is unlocked and not mapped
- * yet - clustering for mmap write case.
- */
-STATIC unsigned int
-xfs_probe_unmapped_page(
- struct address_space *mapping,
- pgoff_t index,
- unsigned int pg_offset)
-{
- struct page *page;
- int ret = 0;
-
- page = find_trylock_page(mapping, index);
- if (!page)
- return 0;
- if (PageWriteback(page))
- goto out;
-
- if (page->mapping && PageDirty(page)) {
- if (page_has_buffers(page)) {
- struct buffer_head *bh, *head;
-
- bh = head = page_buffers(page);
- do {
- if (buffer_mapped(bh) || !buffer_uptodate(bh))
- break;
- ret += bh->b_size;
- if (ret >= pg_offset)
- break;
- } while ((bh = bh->b_this_page) != head);
- } else
- ret = PAGE_CACHE_SIZE;
- }
-
-out:
- unlock_page(page);
- return ret;
-}
-
-STATIC unsigned int
-xfs_probe_unmapped_cluster(
- struct inode *inode,
- struct page *startpage,
- struct buffer_head *bh,
- struct buffer_head *head)
-{
- pgoff_t tindex, tlast, tloff;
- unsigned int pg_offset, len, total = 0;
- struct address_space *mapping = inode->i_mapping;
-
- /* First sum forwards in this page */
- do {
- if (buffer_mapped(bh))
- break;
- total += bh->b_size;
- } while ((bh = bh->b_this_page) != head);
-
- /* If we reached the end of the page, sum forwards in
- * following pages.
- */
- if (bh == head) {
- tlast = i_size_read(inode) >> PAGE_CACHE_SHIFT;
- /* Prune this back to avoid pathological behavior */
- tloff = min(tlast, startpage->index + 64);
- for (tindex = startpage->index + 1; tindex < tloff; tindex++) {
- len = xfs_probe_unmapped_page(mapping, tindex,
- PAGE_CACHE_SIZE);
- if (!len)
- return total;
- total += len;
- }
- if (tindex == tlast &&
- (pg_offset = i_size_read(inode) & (PAGE_CACHE_SIZE - 1))) {
- total += xfs_probe_unmapped_page(mapping,
- tindex, pg_offset);
- }
- }
- return total;
-}
-
-/*
- * Probe for a given page (index) in the inode and test if it is delayed
- * and without unwritten buffers. Returns page locked and with an extra
- * reference count.
- */
-STATIC struct page *
-xfs_probe_delalloc_page(
- struct inode *inode,
- pgoff_t index)
-{
- struct page *page;
-
- page = find_trylock_page(inode->i_mapping, index);
- if (!page)
- return NULL;
- if (PageWriteback(page))
- goto out;
-
- if (page->mapping && page_has_buffers(page)) {
- struct buffer_head *bh, *head;
- int acceptable = 0;
-
- bh = head = page_buffers(page);
- do {
- if (buffer_unwritten(bh)) {
- acceptable = 0;
- break;
- } else if (buffer_delay(bh)) {
- acceptable = 1;
- }
- } while ((bh = bh->b_this_page) != head);
-
- if (acceptable)
- return page;
- }
-
-out:
- unlock_page(page);
- return NULL;
-}
-
-STATIC int
-xfs_map_unwritten(
- struct inode *inode,
- struct page *start_page,
- struct buffer_head *head,
- struct buffer_head *curr,
- unsigned long p_offset,
- int block_bits,
- xfs_iomap_t *iomapp,
- int startio,
- int all_bh)
-{
- struct buffer_head *bh = curr;
- xfs_iomap_t *tmp;
- xfs_buf_t *pb;
- loff_t offset, size;
- unsigned long nblocks = 0;
-
- offset = start_page->index;
- offset <<= PAGE_CACHE_SHIFT;
- offset += p_offset;
-
- /* get an "empty" pagebuf to manage IO completion
- * Proper values will be set before returning */
- pb = pagebuf_lookup(iomapp->iomap_target, 0, 0, 0);
- if (!pb)
- return -EAGAIN;
-
- /* Take a reference to the inode to prevent it from
- * being reclaimed while we have outstanding unwritten
- * extent IO on it.
- */
- if ((igrab(inode)) != inode) {
- pagebuf_free(pb);
- return -EAGAIN;
- }
-
- /* Set the count to 1 initially, this will stop an I/O
- * completion callout which happens before we have started
- * all the I/O from calling pagebuf_iodone too early.
- */
- atomic_set(&pb->pb_io_remaining, 1);
-
- /* First map forwards in the page consecutive buffers
- * covering this unwritten extent
- */
- do {
- if (!buffer_unwritten(bh))
- break;
- tmp = xfs_offset_to_map(start_page, iomapp, p_offset);
- if (!tmp)
- break;
- xfs_map_at_offset(start_page, bh, p_offset, block_bits, iomapp);
- set_buffer_unwritten_io(bh);
- bh->b_private = pb;
- p_offset += bh->b_size;
- nblocks++;
- } while ((bh = bh->b_this_page) != head);
-
- atomic_add(nblocks, &pb->pb_io_remaining);
-
- /* If we reached the end of the page, map forwards in any
- * following pages which are also covered by this extent.
- */
- if (bh == head) {
- struct address_space *mapping = inode->i_mapping;
- pgoff_t tindex, tloff, tlast;
- unsigned long bs;
- unsigned int pg_offset, bbits = inode->i_blkbits;
- struct page *page;
-
- tlast = i_size_read(inode) >> PAGE_CACHE_SHIFT;
- tloff = (iomapp->iomap_offset + iomapp->iomap_bsize) >> PAGE_CACHE_SHIFT;
- tloff = min(tlast, tloff);
- for (tindex = start_page->index + 1; tindex < tloff; tindex++) {
- page = xfs_probe_unwritten_page(mapping,
- tindex, iomapp, pb,
- PAGE_CACHE_SIZE, &bs, bbits);
- if (!page)
- break;
- nblocks += bs;
- atomic_add(bs, &pb->pb_io_remaining);
- xfs_convert_page(inode, page, iomapp, pb,
- startio, all_bh);
- /* stop if converting the next page might add
- * enough blocks that the corresponding byte
- * count won't fit in our ulong page buf length */
- if (nblocks >= ((ULONG_MAX - PAGE_SIZE) >> block_bits))
- goto enough;
- }
-
- if (tindex == tlast &&
- (pg_offset = (i_size_read(inode) & (PAGE_CACHE_SIZE - 1)))) {
- page = xfs_probe_unwritten_page(mapping,
- tindex, iomapp, pb,
- pg_offset, &bs, bbits);
- if (page) {
- nblocks += bs;
- atomic_add(bs, &pb->pb_io_remaining);
- xfs_convert_page(inode, page, iomapp, pb,
- startio, all_bh);
- if (nblocks >= ((ULONG_MAX - PAGE_SIZE) >> block_bits))
- goto enough;
- }
- }
- }
-
-enough:
- size = nblocks; /* NB: using 64bit number here */
- size <<= block_bits; /* convert fsb's to byte range */
-
- XFS_BUF_DATAIO(pb);
- XFS_BUF_ASYNC(pb);
- XFS_BUF_SET_SIZE(pb, size);
- XFS_BUF_SET_COUNT(pb, size);
- XFS_BUF_SET_OFFSET(pb, offset);
- XFS_BUF_SET_FSPRIVATE(pb, LINVFS_GET_VP(inode));
- XFS_BUF_SET_IODONE_FUNC(pb, linvfs_unwritten_convert);
-
- if (atomic_dec_and_test(&pb->pb_io_remaining) == 1) {
- pagebuf_iodone(pb, 1, 1);
- }
-
- return 0;
-}
-
-STATIC void
-xfs_submit_page(
- struct page *page,
- struct buffer_head *bh_arr[],
- int cnt)
-{
- struct buffer_head *bh;
- int i;
-
- BUG_ON(PageWriteback(page));
- set_page_writeback(page);
- clear_page_dirty(page);
- unlock_page(page);
-
- if (cnt) {
- for (i = 0; i < cnt; i++) {
- bh = bh_arr[i];
- mark_buffer_async_write(bh);
- if (buffer_unwritten(bh))
- set_buffer_unwritten_io(bh);
- set_buffer_uptodate(bh);
- clear_buffer_dirty(bh);
- }
-
- for (i = 0; i < cnt; i++)
- submit_bh(WRITE, bh_arr[i]);
- } else
- end_page_writeback(page);
-}
-
-/*
- * Allocate & map buffers for page given the extent map. Write it out.
- * except for the original page of a writepage, this is called on
- * delalloc/unwritten pages only, for the original page it is possible
- * that the page has no mapping at all.
- */
-STATIC void
-xfs_convert_page(
- struct inode *inode,
- struct page *page,
- xfs_iomap_t *iomapp,
- void *private,
- int startio,
- int all_bh)
-{
- struct buffer_head *bh_arr[MAX_BUF_PER_PAGE], *bh, *head;
- xfs_iomap_t *mp = iomapp, *tmp;
- unsigned long end, offset;
- pgoff_t end_index;
- int i = 0, index = 0;
- int bbits = inode->i_blkbits;
-
- end_index = i_size_read(inode) >> PAGE_CACHE_SHIFT;
- if (page->index < end_index) {
- end = PAGE_CACHE_SIZE;
- } else {
- end = i_size_read(inode) & (PAGE_CACHE_SIZE-1);
- }
- bh = head = page_buffers(page);
- do {
- offset = i << bbits;
- if (!(PageUptodate(page) || buffer_uptodate(bh)))
- continue;
- if (buffer_mapped(bh) && all_bh &&
- !buffer_unwritten(bh) && !buffer_delay(bh)) {
- if (startio && (offset < end)) {
- lock_buffer(bh);
- bh_arr[index++] = bh;
- }
- continue;
- }
- tmp = xfs_offset_to_map(page, mp, offset);
- if (!tmp)
- continue;
- ASSERT(!(tmp->iomap_flags & IOMAP_HOLE));
- ASSERT(!(tmp->iomap_flags & IOMAP_DELAY));
-
- /* If this is a new unwritten extent buffer (i.e. one
- * that we haven't passed in private data for, we must
- * now map this buffer too.
- */
- if (buffer_unwritten(bh) && !bh->b_end_io) {
- ASSERT(tmp->iomap_flags & IOMAP_UNWRITTEN);
- xfs_map_unwritten(inode, page, head, bh,
- offset, bbits, tmp, startio, all_bh);
- } else if (! (buffer_unwritten(bh) && buffer_locked(bh))) {
- xfs_map_at_offset(page, bh, offset, bbits, tmp);
- if (buffer_unwritten(bh)) {
- set_buffer_unwritten_io(bh);
- bh->b_private = private;
- ASSERT(private);
- }
- }
- if (startio && (offset < end)) {
- bh_arr[index++] = bh;
- } else {
- set_buffer_dirty(bh);
- unlock_buffer(bh);
- mark_buffer_dirty(bh);
- }
- } while (i++, (bh = bh->b_this_page) != head);
-
- if (startio) {
- xfs_submit_page(page, bh_arr, index);
- } else {
- unlock_page(page);
- }
-}
-
-/*
- * Convert & write out a cluster of pages in the same extent as defined
- * by mp and following the start page.
- */
-STATIC void
-xfs_cluster_write(
- struct inode *inode,
- pgoff_t tindex,
- xfs_iomap_t *iomapp,
- int startio,
- int all_bh)
-{
- pgoff_t tlast;
- struct page *page;
-
- tlast = (iomapp->iomap_offset + iomapp->iomap_bsize) >> PAGE_CACHE_SHIFT;
- for (; tindex < tlast; tindex++) {
- page = xfs_probe_delalloc_page(inode, tindex);
- if (!page)
- break;
- xfs_convert_page(inode, page, iomapp, NULL, startio, all_bh);
- }
-}
-
-/*
- * Calling this without startio set means we are being asked to make a dirty
- * page ready for freeing it's buffers. When called with startio set then
- * we are coming from writepage.
- *
- * When called with startio set it is important that we write the WHOLE
- * page if possible.
- * The bh->b_state's cannot know if any of the blocks or which block for
- * that matter are dirty due to mmap writes, and therefore bh uptodate is
- * only vaild if the page itself isn't completely uptodate. Some layers
- * may clear the page dirty flag prior to calling write page, under the
- * assumption the entire page will be written out; by not writing out the
- * whole page the page can be reused before all valid dirty data is
- * written out. Note: in the case of a page that has been dirty'd by
- * mapwrite and but partially setup by block_prepare_write the
- * bh->b_states's will not agree and only ones setup by BPW/BCW will have
- * valid state, thus the whole page must be written out thing.
- */
-
-STATIC int
-xfs_page_state_convert(
- struct inode *inode,
- struct page *page,
- int startio,
- int unmapped) /* also implies page uptodate */
-{
- struct buffer_head *bh_arr[MAX_BUF_PER_PAGE], *bh, *head;
- xfs_iomap_t *iomp, iomap;
- unsigned long p_offset = 0;
- pgoff_t end_index;
- loff_t offset;
- unsigned long long end_offset;
- int len, err, i, cnt = 0, uptodate = 1;
- int flags = startio ? 0 : BMAPI_TRYLOCK;
- int page_dirty = 1;
-
-
- /* Are we off the end of the file ? */
- end_index = i_size_read(inode) >> PAGE_CACHE_SHIFT;
- if (page->index >= end_index) {
- if ((page->index >= end_index + 1) ||
- !(i_size_read(inode) & (PAGE_CACHE_SIZE - 1))) {
- err = -EIO;
- goto error;
- }
- }
-
- offset = (loff_t)page->index << PAGE_CACHE_SHIFT;
- end_offset = min_t(unsigned long long,
- offset + PAGE_CACHE_SIZE, i_size_read(inode));
-
- bh = head = page_buffers(page);
- iomp = NULL;
-
- len = bh->b_size;
- do {
- if (offset >= end_offset)
- break;
- if (!buffer_uptodate(bh))
- uptodate = 0;
- if (!(PageUptodate(page) || buffer_uptodate(bh)) && !startio)
- continue;
-
- if (iomp) {
- iomp = xfs_offset_to_map(page, &iomap, p_offset);
- }
-
- /*
- * First case, map an unwritten extent and prepare for
- * extent state conversion transaction on completion.
- */
- if (buffer_unwritten(bh)) {
- if (!iomp) {
- err = xfs_map_blocks(inode, offset, len, &iomap,
- BMAPI_READ|BMAPI_IGNSTATE);
- if (err) {
- goto error;
- }
- iomp = xfs_offset_to_map(page, &iomap,
- p_offset);
- }
- if (iomp && startio) {
- if (!bh->b_end_io) {
- err = xfs_map_unwritten(inode, page,
- head, bh, p_offset,
- inode->i_blkbits, iomp,
- startio, unmapped);
- if (err) {
- goto error;
- }
- }
- bh_arr[cnt++] = bh;
- page_dirty = 0;
- }
- /*
- * Second case, allocate space for a delalloc buffer.
- * We can return EAGAIN here in the release page case.
- */
- } else if (buffer_delay(bh)) {
- if (!iomp) {
- err = xfs_map_blocks(inode, offset, len, &iomap,
- BMAPI_ALLOCATE | flags);
- if (err) {
- goto error;
- }
- iomp = xfs_offset_to_map(page, &iomap,
- p_offset);
- }
- if (iomp) {
- xfs_map_at_offset(page, bh, p_offset,
- inode->i_blkbits, iomp);
- if (startio) {
- bh_arr[cnt++] = bh;
- } else {
- set_buffer_dirty(bh);
- unlock_buffer(bh);
- mark_buffer_dirty(bh);
- }
- page_dirty = 0;
- }
- } else if ((buffer_uptodate(bh) || PageUptodate(page)) &&
- (unmapped || startio)) {
-
- if (!buffer_mapped(bh)) {
- int size;
-
- /*
- * Getting here implies an unmapped buffer
- * was found, and we are in a path where we
- * need to write the whole page out.
- */
- if (!iomp) {
- size = xfs_probe_unmapped_cluster(
- inode, page, bh, head);
- err = xfs_map_blocks(inode, offset,
- size, &iomap,
- BMAPI_WRITE|BMAPI_MMAP);
- if (err) {
- goto error;
- }
- iomp = xfs_offset_to_map(page, &iomap,
- p_offset);
- }
- if (iomp) {
- xfs_map_at_offset(page,
- bh, p_offset,
- inode->i_blkbits, iomp);
- if (startio) {
- bh_arr[cnt++] = bh;
- } else {
- set_buffer_dirty(bh);
- unlock_buffer(bh);
- mark_buffer_dirty(bh);
- }
- page_dirty = 0;
- }
- } else if (startio) {
- if (buffer_uptodate(bh) &&
- !test_and_set_bit(BH_Lock, &bh->b_state)) {
- bh_arr[cnt++] = bh;
- page_dirty = 0;
- }
- }
- }
- } while (offset += len, p_offset += len,
- ((bh = bh->b_this_page) != head));
-
- if (uptodate && bh == head)
- SetPageUptodate(page);
-
- if (startio)
- xfs_submit_page(page, bh_arr, cnt);
-
- if (iomp)
- xfs_cluster_write(inode, page->index + 1, iomp, startio, unmapped);
-
- return page_dirty;
-
-error:
- for (i = 0; i < cnt; i++) {
- unlock_buffer(bh_arr[i]);
- }
-
- /*
- * If it's delalloc and we have nowhere to put it,
- * throw it away, unless the lower layers told
- * us to try again.
- */
- if (err != -EAGAIN) {
- if (!unmapped) {
- block_invalidatepage(page, 0);
- }
- ClearPageUptodate(page);
- }
- return err;
-}
-
-STATIC int
-linvfs_get_block_core(
- struct inode *inode,
- sector_t iblock,
- unsigned long blocks,
- struct buffer_head *bh_result,
- int create,
- int direct,
- bmapi_flags_t flags)
-{
- vnode_t *vp = LINVFS_GET_VP(inode);
- xfs_iomap_t iomap;
- int retpbbm = 1;
- int error;
- ssize_t size;
- loff_t offset = (loff_t)iblock << inode->i_blkbits;
-
- /* If we are doing writes at the end of the file,
- * allocate in chunks
- */
- if (blocks)
- size = blocks << inode->i_blkbits;
- else if (create && (offset >= i_size_read(inode)))
- size = 1 << XFS_WRITE_IO_LOG;
- else
- size = 1 << inode->i_blkbits;
-
- VOP_BMAP(vp, offset, size,
- create ? flags : BMAPI_READ, &iomap, &retpbbm, error);
- if (error)
- return -error;
-
- if (retpbbm == 0)
- return 0;
-
- if (iomap.iomap_bn != IOMAP_DADDR_NULL) {
- xfs_daddr_t bn;
- loff_t delta;
-
- /* For unwritten extents do not report a disk address on
- * the read case (treat as if we're reading into a hole).
- */
- if (create || !(iomap.iomap_flags & IOMAP_UNWRITTEN)) {
- delta = offset - iomap.iomap_offset;
- delta >>= inode->i_blkbits;
-
- bn = iomap.iomap_bn >> (inode->i_blkbits - BBSHIFT);
- bn += delta;
-
- bh_result->b_blocknr = bn;
- bh_result->b_bdev = iomap.iomap_target->pbr_bdev;
- set_buffer_mapped(bh_result);
- }
- if (create && (iomap.iomap_flags & IOMAP_UNWRITTEN)) {
- if (direct)
- bh_result->b_private = inode;
- set_buffer_unwritten(bh_result);
- set_buffer_delay(bh_result);
- }
- }
-
- /* If this is a realtime file, data might be on a new device */
- bh_result->b_bdev = iomap.iomap_target->pbr_bdev;
-
- /* If we previously allocated a block out beyond eof and
- * we are now coming back to use it then we will need to
- * flag it as new even if it has a disk address.
- */
- if (create &&
- ((!buffer_mapped(bh_result) && !buffer_uptodate(bh_result)) ||
- (offset >= i_size_read(inode)) || (iomap.iomap_flags & IOMAP_NEW))) {
- set_buffer_new(bh_result);
- }
-
- if (iomap.iomap_flags & IOMAP_DELAY) {
- if (unlikely(direct))
- BUG();
- if (create) {
- set_buffer_mapped(bh_result);
- set_buffer_uptodate(bh_result);
- }
- bh_result->b_bdev = iomap.iomap_target->pbr_bdev;
- set_buffer_delay(bh_result);
- }
-
- if (blocks) {
- loff_t iosize;
- iosize = (iomap.iomap_bsize - iomap.iomap_delta);
- bh_result->b_size =
- (ssize_t)min(iosize, (loff_t)(blocks << inode->i_blkbits));
- }
-
- return 0;
-}
-
-int
-linvfs_get_block(
- struct inode *inode,
- sector_t iblock,
- struct buffer_head *bh_result,
- int create)
-{
- return linvfs_get_block_core(inode, iblock, 0, bh_result,
- create, 0, BMAPI_WRITE);
-}
-
-STATIC int
-linvfs_get_block_sync(
- struct inode *inode,
- sector_t iblock,
- struct buffer_head *bh_result,
- int create)
-{
- return linvfs_get_block_core(inode, iblock, 0, bh_result,
- create, 0, BMAPI_SYNC|BMAPI_WRITE);
-}
-
-STATIC int
-linvfs_get_blocks_direct(
- struct inode *inode,
- sector_t iblock,
- unsigned long max_blocks,
- struct buffer_head *bh_result,
- int create)
-{
- return linvfs_get_block_core(inode, iblock, max_blocks, bh_result,
- create, 1, BMAPI_WRITE|BMAPI_DIRECT);
-}
-
-STATIC ssize_t
-linvfs_direct_IO(
- int rw,
- struct kiocb *iocb,
- const struct iovec *iov,
- loff_t offset,
- unsigned long nr_segs)
-{
- struct file *file = iocb->ki_filp;
- struct inode *inode = file->f_mapping->host;
- vnode_t *vp = LINVFS_GET_VP(inode);
- xfs_iomap_t iomap;
- int maps = 1;
- int error;
-
- VOP_BMAP(vp, offset, 0, BMAPI_DEVICE, &iomap, &maps, error);
- if (error)
- return -error;
-
- return blockdev_direct_IO_no_locking(rw, iocb, inode,
- iomap.iomap_target->pbr_bdev,
- iov, offset, nr_segs,
- linvfs_get_blocks_direct,
- linvfs_unwritten_convert_direct);
-}
-
-
-STATIC sector_t
-linvfs_bmap(
- struct address_space *mapping,
- sector_t block)
-{
- struct inode *inode = (struct inode *)mapping->host;
- vnode_t *vp = LINVFS_GET_VP(inode);
- int error;
-
- vn_trace_entry(vp, "linvfs_bmap", (inst_t *)__return_address);
-
- VOP_RWLOCK(vp, VRWLOCK_READ);
- VOP_FLUSH_PAGES(vp, (xfs_off_t)0, -1, 0, FI_REMAPF, error);
- VOP_RWUNLOCK(vp, VRWLOCK_READ);
- return generic_block_bmap(mapping, block, linvfs_get_block);
-}
-
-STATIC int
-linvfs_readpage(
- struct file *unused,
- struct page *page)
-{
- return mpage_readpage(page, linvfs_get_block);
-}
-
-STATIC int
-linvfs_readpages(
- struct file *unused,
- struct address_space *mapping,
- struct list_head *pages,
- unsigned nr_pages)
-{
- return mpage_readpages(mapping, pages, nr_pages, linvfs_get_block);
-}
-
-STATIC void
-xfs_count_page_state(
- struct page *page,
- int *delalloc,
- int *unmapped,
- int *unwritten)
-{
- struct buffer_head *bh, *head;
-
- *delalloc = *unmapped = *unwritten = 0;
-
- bh = head = page_buffers(page);
- do {
- if (buffer_uptodate(bh) && !buffer_mapped(bh))
- (*unmapped) = 1;
- else if (buffer_unwritten(bh) && !buffer_delay(bh))
- clear_buffer_unwritten(bh);
- else if (buffer_unwritten(bh))
- (*unwritten) = 1;
- else if (buffer_delay(bh))
- (*delalloc) = 1;
- } while ((bh = bh->b_this_page) != head);
-}
-
-
-/*
- * writepage: Called from one of two places:
- *
- * 1. we are flushing a delalloc buffer head.
- *
- * 2. we are writing out a dirty page. Typically the page dirty
- * state is cleared before we get here. In this case is it
- * conceivable we have no buffer heads.
- *
- * For delalloc space on the page we need to allocate space and
- * flush it. For unmapped buffer heads on the page we should
- * allocate space if the page is uptodate. For any other dirty
- * buffer heads on the page we should flush them.
- *
- * If we detect that a transaction would be required to flush
- * the page, we have to check the process flags first, if we
- * are already in a transaction or disk I/O during allocations
- * is off, we need to fail the writepage and redirty the page.
- */
-
-STATIC int
-linvfs_writepage(
- struct page *page,
- struct writeback_control *wbc)
-{
- int error;
- int need_trans;
- int delalloc, unmapped, unwritten;
- struct inode *inode = page->mapping->host;
-
- xfs_page_trace(XFS_WRITEPAGE_ENTER, inode, page, 0);
-
- /*
- * We need a transaction if:
- * 1. There are delalloc buffers on the page
- * 2. The page is uptodate and we have unmapped buffers
- * 3. The page is uptodate and we have no buffers
- * 4. There are unwritten buffers on the page
- */
-
- if (!page_has_buffers(page)) {
- unmapped = 1;
- need_trans = 1;
- } else {
- xfs_count_page_state(page, &delalloc, &unmapped, &unwritten);
- if (!PageUptodate(page))
- unmapped = 0;
- need_trans = delalloc + unmapped + unwritten;
- }
-
- /*
- * If we need a transaction and the process flags say
- * we are already in a transaction, or no IO is allowed
- * then mark the page dirty again and leave the page
- * as is.
- */
- if (PFLAGS_TEST_FSTRANS() && need_trans)
- goto out_fail;
-
- /*
- * Delay hooking up buffer heads until we have
- * made our go/no-go decision.
- */
- if (!page_has_buffers(page))
- create_empty_buffers(page, 1 << inode->i_blkbits, 0);
-
- /*
- * Convert delayed allocate, unwritten or unmapped space
- * to real space and flush out to disk.
- */
- error = xfs_page_state_convert(inode, page, 1, unmapped);
- if (error == -EAGAIN)
- goto out_fail;
- if (unlikely(error < 0))
- goto out_unlock;
-
- return 0;
-
-out_fail:
- set_page_dirty(page);
- unlock_page(page);
- return 0;
-out_unlock:
- unlock_page(page);
- return error;
-}
-
-/*
- * Called to move a page into cleanable state - and from there
- * to be released. Possibly the page is already clean. We always
- * have buffer heads in this call.
- *
- * Returns 0 if the page is ok to release, 1 otherwise.
- *
- * Possible scenarios are:
- *
- * 1. We are being called to release a page which has been written
- * to via regular I/O. buffer heads will be dirty and possibly
- * delalloc. If no delalloc buffer heads in this case then we
- * can just return zero.
- *
- * 2. We are called to release a page which has been written via
- * mmap, all we need to do is ensure there is no delalloc
- * state in the buffer heads, if not we can let the caller
- * free them and we should come back later via writepage.
- */
-STATIC int
-linvfs_release_page(
- struct page *page,
- int gfp_mask)
-{
- struct inode *inode = page->mapping->host;
- int dirty, delalloc, unmapped, unwritten;
-
- xfs_page_trace(XFS_RELEASEPAGE_ENTER, inode, page, gfp_mask);
-
- xfs_count_page_state(page, &delalloc, &unmapped, &unwritten);
- if (!delalloc && !unwritten)
- goto free_buffers;
-
- if (!(gfp_mask & __GFP_FS))
- return 0;
-
- /* If we are already inside a transaction or the thread cannot
- * do I/O, we cannot release this page.
- */
- if (PFLAGS_TEST_FSTRANS())
- return 0;
-
- /*
- * Convert delalloc space to real space, do not flush the
- * data out to disk, that will be done by the caller.
- * Never need to allocate space here - we will always
- * come back to writepage in that case.
- */
- dirty = xfs_page_state_convert(inode, page, 0, 0);
- if (dirty == 0 && !unwritten)
- goto free_buffers;
- return 0;
-
-free_buffers:
- return try_to_free_buffers(page);
-}
-
-STATIC int
-linvfs_prepare_write(
- struct file *file,
- struct page *page,
- unsigned int from,
- unsigned int to)
-{
- if (file && (file->f_flags & O_SYNC)) {
- return block_prepare_write(page, from, to,
- linvfs_get_block_sync);
- } else {
- return block_prepare_write(page, from, to,
- linvfs_get_block);
- }
-}
-
-struct address_space_operations linvfs_aops = {
- .readpage = linvfs_readpage,
- .readpages = linvfs_readpages,
- .writepage = linvfs_writepage,
- .sync_page = block_sync_page,
- .releasepage = linvfs_release_page,
- .prepare_write = linvfs_prepare_write,
- .commit_write = generic_commit_write,
- .bmap = linvfs_bmap,
- .direct_IO = linvfs_direct_IO,
-};
+++ /dev/null
-/*
- * Copyright (c) 2000-2004 Silicon Graphics, Inc. All Rights Reserved.
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of version 2 of the GNU General Public License as
- * published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it would be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
- *
- * Further, this software is distributed without any warranty that it is
- * free of the rightful claim of any third person regarding infringement
- * or the like. Any license provided herein, whether implied or
- * otherwise, applies only to this software file. Patent licenses, if
- * any, provided herein do not apply to combinations of this program with
- * other software, or any other product whatsoever.
- *
- * You should have received a copy of the GNU General Public License along
- * with this program; if not, write the Free Software Foundation, Inc., 59
- * Temple Place - Suite 330, Boston MA 02111-1307, USA.
- *
- * Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy,
- * Mountain View, CA 94043, or:
- *
- * http://www.sgi.com
- *
- * For further information regarding this notice, see:
- *
- * http://oss.sgi.com/projects/GenInfo/SGIGPLNoticeExplan/
- */
-
-/*
- * The xfs_buf.c code provides an abstract buffer cache model on top
- * of the Linux page cache. Cached metadata blocks for a file system
- * are hashed to the inode for the block device. xfs_buf.c assembles
- * buffers (xfs_buf_t) on demand to aggregate such cached pages for I/O.
- *
- * Written by Steve Lord, Jim Mostek, Russell Cattelan
- * and Rajagopal Ananthanarayanan ("ananth") at SGI.
- *
- */
-
-#include <linux/stddef.h>
-#include <linux/errno.h>
-#include <linux/slab.h>
-#include <linux/pagemap.h>
-#include <linux/init.h>
-#include <linux/vmalloc.h>
-#include <linux/bio.h>
-#include <linux/sysctl.h>
-#include <linux/proc_fs.h>
-#include <linux/workqueue.h>
-#include <linux/suspend.h>
-#include <linux/percpu.h>
-
-#include "xfs_linux.h"
-
-#ifndef GFP_READAHEAD
-#define GFP_READAHEAD (__GFP_NOWARN|__GFP_NORETRY)
-#endif
-
-/*
- * File wide globals
- */
-
-STATIC kmem_cache_t *pagebuf_cache;
-STATIC void pagebuf_daemon_wakeup(void);
-STATIC void pagebuf_delwri_queue(xfs_buf_t *, int);
-STATIC struct workqueue_struct *pagebuf_logio_workqueue;
-STATIC struct workqueue_struct *pagebuf_dataio_workqueue;
-
-/*
- * Pagebuf debugging
- */
-
-#ifdef PAGEBUF_TRACE
-void
-pagebuf_trace(
- xfs_buf_t *pb,
- char *id,
- void *data,
- void *ra)
-{
- ktrace_enter(pagebuf_trace_buf,
- pb, id,
- (void *)(unsigned long)pb->pb_flags,
- (void *)(unsigned long)pb->pb_hold.counter,
- (void *)(unsigned long)pb->pb_sema.count.counter,
- (void *)current,
- data, ra,
- (void *)(unsigned long)((pb->pb_file_offset>>32) & 0xffffffff),
- (void *)(unsigned long)(pb->pb_file_offset & 0xffffffff),
- (void *)(unsigned long)pb->pb_buffer_length,
- NULL, NULL, NULL, NULL, NULL);
-}
-ktrace_t *pagebuf_trace_buf;
-#define PAGEBUF_TRACE_SIZE 4096
-#define PB_TRACE(pb, id, data) \
- pagebuf_trace(pb, id, (void *)data, (void *)__builtin_return_address(0))
-#else
-#define PB_TRACE(pb, id, data) do { } while (0)
-#endif
-
-#ifdef PAGEBUF_LOCK_TRACKING
-# define PB_SET_OWNER(pb) ((pb)->pb_last_holder = current->pid)
-# define PB_CLEAR_OWNER(pb) ((pb)->pb_last_holder = -1)
-# define PB_GET_OWNER(pb) ((pb)->pb_last_holder)
-#else
-# define PB_SET_OWNER(pb) do { } while (0)
-# define PB_CLEAR_OWNER(pb) do { } while (0)
-# define PB_GET_OWNER(pb) do { } while (0)
-#endif
-
-/*
- * Pagebuf allocation / freeing.
- */
-
-#define pb_to_gfp(flags) \
- (((flags) & PBF_READ_AHEAD) ? GFP_READAHEAD : \
- ((flags) & PBF_DONT_BLOCK) ? GFP_NOFS : GFP_KERNEL)
-
-#define pb_to_km(flags) \
- (((flags) & PBF_DONT_BLOCK) ? KM_NOFS : KM_SLEEP)
-
-
-#define pagebuf_allocate(flags) \
- kmem_zone_alloc(pagebuf_cache, pb_to_km(flags))
-#define pagebuf_deallocate(pb) \
- kmem_zone_free(pagebuf_cache, (pb));
-
-/*
- * Pagebuf hashing
- */
-
-#define NBITS 8
-#define NHASH (1<<NBITS)
-
-typedef struct {
- struct list_head pb_hash;
- spinlock_t pb_hash_lock;
-} pb_hash_t;
-
-STATIC pb_hash_t pbhash[NHASH];
-#define pb_hash(pb) &pbhash[pb->pb_hash_index]
-
-STATIC int
-_bhash(
- struct block_device *bdev,
- loff_t base)
-{
- int bit, hval;
-
- base >>= 9;
- base ^= (unsigned long)bdev / L1_CACHE_BYTES;
- for (bit = hval = 0; base && bit < sizeof(base) * 8; bit += NBITS) {
- hval ^= (int)base & (NHASH-1);
- base >>= NBITS;
- }
- return hval;
-}
-
-/*
- * Mapping of multi-page buffers into contiguous virtual space
- */
-
-typedef struct a_list {
- void *vm_addr;
- struct a_list *next;
-} a_list_t;
-
-STATIC a_list_t *as_free_head;
-STATIC int as_list_len;
-STATIC spinlock_t as_lock = SPIN_LOCK_UNLOCKED;
-
-/*
- * Try to batch vunmaps because they are costly.
- */
-STATIC void
-free_address(
- void *addr)
-{
- a_list_t *aentry;
-
- aentry = kmalloc(sizeof(a_list_t), GFP_ATOMIC);
- if (aentry) {
- spin_lock(&as_lock);
- aentry->next = as_free_head;
- aentry->vm_addr = addr;
- as_free_head = aentry;
- as_list_len++;
- spin_unlock(&as_lock);
- } else {
- vunmap(addr);
- }
-}
-
-STATIC void
-purge_addresses(void)
-{
- a_list_t *aentry, *old;
-
- if (as_free_head == NULL)
- return;
-
- spin_lock(&as_lock);
- aentry = as_free_head;
- as_free_head = NULL;
- as_list_len = 0;
- spin_unlock(&as_lock);
-
- while ((old = aentry) != NULL) {
- vunmap(aentry->vm_addr);
- aentry = aentry->next;
- kfree(old);
- }
-}
-
-/*
- * Internal pagebuf object manipulation
- */
-
-STATIC void
-_pagebuf_initialize(
- xfs_buf_t *pb,
- xfs_buftarg_t *target,
- loff_t range_base,
- size_t range_length,
- page_buf_flags_t flags)
-{
- /*
- * We don't want certain flags to appear in pb->pb_flags.
- */
- flags &= ~(PBF_LOCK|PBF_MAPPED|PBF_DONT_BLOCK|PBF_READ_AHEAD);
-
- memset(pb, 0, sizeof(xfs_buf_t));
- atomic_set(&pb->pb_hold, 1);
- init_MUTEX_LOCKED(&pb->pb_iodonesema);
- INIT_LIST_HEAD(&pb->pb_list);
- INIT_LIST_HEAD(&pb->pb_hash_list);
- init_MUTEX_LOCKED(&pb->pb_sema); /* held, no waiters */
- PB_SET_OWNER(pb);
- pb->pb_target = target;
- pb->pb_file_offset = range_base;
- /*
- * Set buffer_length and count_desired to the same value initially.
- * I/O routines should use count_desired, which will be the same in
- * most cases but may be reset (e.g. XFS recovery).
- */
- pb->pb_buffer_length = pb->pb_count_desired = range_length;
- pb->pb_flags = flags | PBF_NONE;
- pb->pb_bn = XFS_BUF_DADDR_NULL;
- atomic_set(&pb->pb_pin_count, 0);
- init_waitqueue_head(&pb->pb_waiters);
-
- XFS_STATS_INC(pb_create);
- PB_TRACE(pb, "initialize", target);
-}
-
-/*
- * Allocate a page array capable of holding a specified number
- * of pages, and point the page buf at it.
- */
-STATIC int
-_pagebuf_get_pages(
- xfs_buf_t *pb,
- int page_count,
- page_buf_flags_t flags)
-{
- /* Make sure that we have a page list */
- if (pb->pb_pages == NULL) {
- pb->pb_offset = page_buf_poff(pb->pb_file_offset);
- pb->pb_page_count = page_count;
- if (page_count <= PB_PAGES) {
- pb->pb_pages = pb->pb_page_array;
- } else {
- pb->pb_pages = kmem_alloc(sizeof(struct page *) *
- page_count, pb_to_km(flags));
- if (pb->pb_pages == NULL)
- return -ENOMEM;
- }
- memset(pb->pb_pages, 0, sizeof(struct page *) * page_count);
- }
- return 0;
-}
-
-/*
- * Frees pb_pages if it was malloced.
- */
-STATIC void
-_pagebuf_free_pages(
- xfs_buf_t *bp)
-{
- if (bp->pb_pages != bp->pb_page_array) {
- kmem_free(bp->pb_pages,
- bp->pb_page_count * sizeof(struct page *));
- }
-}
-
-/*
- * Releases the specified buffer.
- *
- * The modification state of any associated pages is left unchanged.
- * The buffer most not be on any hash - use pagebuf_rele instead for
- * hashed and refcounted buffers
- */
-void
-pagebuf_free(
- xfs_buf_t *bp)
-{
- PB_TRACE(bp, "free", 0);
-
- ASSERT(list_empty(&bp->pb_hash_list));
-
- if (bp->pb_flags & _PBF_PAGE_CACHE) {
- uint i;
-
- if ((bp->pb_flags & PBF_MAPPED) && (bp->pb_page_count > 1))
- free_address(bp->pb_addr - bp->pb_offset);
-
- for (i = 0; i < bp->pb_page_count; i++)
- page_cache_release(bp->pb_pages[i]);
- _pagebuf_free_pages(bp);
- } else if (bp->pb_flags & _PBF_KMEM_ALLOC) {
- /*
- * XXX(hch): bp->pb_count_desired might be incorrect (see
- * pagebuf_associate_memory for details), but fortunately
- * the Linux version of kmem_free ignores the len argument..
- */
- kmem_free(bp->pb_addr, bp->pb_count_desired);
- _pagebuf_free_pages(bp);
- }
-
- pagebuf_deallocate(bp);
-}
-
-/*
- * Finds all pages for buffer in question and builds it's page list.
- */
-STATIC int
-_pagebuf_lookup_pages(
- xfs_buf_t *bp,
- uint flags)
-{
- struct address_space *mapping = bp->pb_target->pbr_mapping;
- unsigned int sectorshift = bp->pb_target->pbr_sshift;
- size_t blocksize = bp->pb_target->pbr_bsize;
- size_t size = bp->pb_count_desired;
- size_t nbytes, offset;
- int gfp_mask = pb_to_gfp(flags);
- unsigned short page_count, i;
- pgoff_t first;
- loff_t end;
- int error;
-
- end = bp->pb_file_offset + bp->pb_buffer_length;
- page_count = page_buf_btoc(end) - page_buf_btoct(bp->pb_file_offset);
-
- error = _pagebuf_get_pages(bp, page_count, flags);
- if (unlikely(error))
- return error;
-
- offset = bp->pb_offset;
- first = bp->pb_file_offset >> PAGE_CACHE_SHIFT;
-
- for (i = 0; i < bp->pb_page_count; i++) {
- struct page *page;
- uint retries = 0;
-
- retry:
- page = find_or_create_page(mapping, first + i, gfp_mask);
- if (unlikely(page == NULL)) {
- if (flags & PBF_READ_AHEAD)
- return -ENOMEM;
-
- /*
- * This could deadlock.
- *
- * But until all the XFS lowlevel code is revamped to
- * handle buffer allocation failures we can't do much.
- */
- if (!(++retries % 100)) {
- printk(KERN_ERR "possibly deadlocking in %s\n",
- __FUNCTION__);
- }
-
- XFS_STATS_INC(pb_page_retries);
- pagebuf_daemon_wakeup();
- current->state = TASK_UNINTERRUPTIBLE;
- schedule_timeout(10);
- goto retry;
- }
-
- XFS_STATS_INC(pb_page_found);
-
- nbytes = min_t(size_t, size, PAGE_CACHE_SIZE - offset);
- size -= nbytes;
-
- if (!PageUptodate(page)) {
- page_count--;
- if (blocksize == PAGE_CACHE_SIZE) {
- if (flags & PBF_READ)
- bp->pb_locked = 1;
- } else if (!PagePrivate(page)) {
- unsigned long j, range;
-
- /*
- * In this case page->private holds a bitmap
- * of uptodate sectors within the page
- */
- ASSERT(blocksize < PAGE_CACHE_SIZE);
- range = (offset + nbytes) >> sectorshift;
- for (j = offset >> sectorshift; j < range; j++)
- if (!test_bit(j, &page->private))
- break;
- if (j == range)
- page_count++;
- }
- }
-
- bp->pb_pages[i] = page;
- offset = 0;
- }
-
- if (!bp->pb_locked) {
- for (i = 0; i < bp->pb_page_count; i++)
- unlock_page(bp->pb_pages[i]);
- }
-
- bp->pb_flags |= _PBF_PAGE_CACHE;
-
- if (page_count) {
- /* if we have any uptodate pages, mark that in the buffer */
- bp->pb_flags &= ~PBF_NONE;
-
- /* if some pages aren't uptodate, mark that in the buffer */
- if (page_count != bp->pb_page_count)
- bp->pb_flags |= PBF_PARTIAL;
- }
-
- PB_TRACE(bp, "lookup_pages", (long)page_count);
- return error;
-}
-
-/*
- * Map buffer into kernel address-space if nessecary.
- */
-STATIC int
-_pagebuf_map_pages(
- xfs_buf_t *bp,
- uint flags)
-{
- /* A single page buffer is always mappable */
- if (bp->pb_page_count == 1) {
- bp->pb_addr = page_address(bp->pb_pages[0]) + bp->pb_offset;
- bp->pb_flags |= PBF_MAPPED;
- } else if (flags & PBF_MAPPED) {
- if (as_list_len > 64)
- purge_addresses();
- bp->pb_addr = vmap(bp->pb_pages, bp->pb_page_count,
- VM_MAP, PAGE_KERNEL);
- if (unlikely(bp->pb_addr == NULL))
- return -ENOMEM;
- bp->pb_addr += bp->pb_offset;
- bp->pb_flags |= PBF_MAPPED;
- }
-
- return 0;
-}
-
-/*
- * Finding and Reading Buffers
- */
-
-/*
- * _pagebuf_find
- *
- * Looks up, and creates if absent, a lockable buffer for
- * a given range of an inode. The buffer is returned
- * locked. If other overlapping buffers exist, they are
- * released before the new buffer is created and locked,
- * which may imply that this call will block until those buffers
- * are unlocked. No I/O is implied by this call.
- */
-STATIC xfs_buf_t *
-_pagebuf_find( /* find buffer for block */
- xfs_buftarg_t *target,/* target for block */
- loff_t ioff, /* starting offset of range */
- size_t isize, /* length of range */
- page_buf_flags_t flags, /* PBF_TRYLOCK */
- xfs_buf_t *new_pb)/* newly allocated buffer */
-{
- loff_t range_base;
- size_t range_length;
- int hval;
- pb_hash_t *h;
- xfs_buf_t *pb, *n;
- int not_locked;
-
- range_base = (ioff << BBSHIFT);
- range_length = (isize << BBSHIFT);
-
- /* Ensure we never do IOs smaller than the sector size */
- BUG_ON(range_length < (1 << target->pbr_sshift));
-
- /* Ensure we never do IOs that are not sector aligned */
- BUG_ON(range_base & (loff_t)target->pbr_smask);
-
- hval = _bhash(target->pbr_bdev, range_base);
- h = &pbhash[hval];
-
- spin_lock(&h->pb_hash_lock);
- list_for_each_entry_safe(pb, n, &h->pb_hash, pb_hash_list) {
- if (pb->pb_target == target &&
- pb->pb_file_offset == range_base &&
- pb->pb_buffer_length == range_length) {
- /* If we look at something bring it to the
- * front of the list for next time
- */
- atomic_inc(&pb->pb_hold);
- list_move(&pb->pb_hash_list, &h->pb_hash);
- goto found;
- }
- }
-
- /* No match found */
- if (new_pb) {
- _pagebuf_initialize(new_pb, target, range_base,
- range_length, flags);
- new_pb->pb_hash_index = hval;
- list_add(&new_pb->pb_hash_list, &h->pb_hash);
- } else {
- XFS_STATS_INC(pb_miss_locked);
- }
-
- spin_unlock(&h->pb_hash_lock);
- return (new_pb);
-
-found:
- spin_unlock(&h->pb_hash_lock);
-
- /* Attempt to get the semaphore without sleeping,
- * if this does not work then we need to drop the
- * spinlock and do a hard attempt on the semaphore.
- */
- not_locked = down_trylock(&pb->pb_sema);
- if (not_locked) {
- if (!(flags & PBF_TRYLOCK)) {
- /* wait for buffer ownership */
- PB_TRACE(pb, "get_lock", 0);
- pagebuf_lock(pb);
- XFS_STATS_INC(pb_get_locked_waited);
- } else {
- /* We asked for a trylock and failed, no need
- * to look at file offset and length here, we
- * know that this pagebuf at least overlaps our
- * pagebuf and is locked, therefore our buffer
- * either does not exist, or is this buffer
- */
-
- pagebuf_rele(pb);
- XFS_STATS_INC(pb_busy_locked);
- return (NULL);
- }
- } else {
- /* trylock worked */
- PB_SET_OWNER(pb);
- }
-
- if (pb->pb_flags & PBF_STALE)
- pb->pb_flags &= PBF_MAPPED;
- PB_TRACE(pb, "got_lock", 0);
- XFS_STATS_INC(pb_get_locked);
- return (pb);
-}
-
-
-/*
- * pagebuf_find
- *
- * pagebuf_find returns a buffer matching the specified range of
- * data for the specified target, if any of the relevant blocks
- * are in memory. The buffer may have unallocated holes, if
- * some, but not all, of the blocks are in memory. Even where
- * pages are present in the buffer, not all of every page may be
- * valid.
- */
-xfs_buf_t *
-pagebuf_find( /* find buffer for block */
- /* if the block is in memory */
- xfs_buftarg_t *target,/* target for block */
- loff_t ioff, /* starting offset of range */
- size_t isize, /* length of range */
- page_buf_flags_t flags) /* PBF_TRYLOCK */
-{
- return _pagebuf_find(target, ioff, isize, flags, NULL);
-}
-
-/*
- * pagebuf_get
- *
- * pagebuf_get assembles a buffer covering the specified range.
- * Some or all of the blocks in the range may be valid. Storage
- * in memory for all portions of the buffer will be allocated,
- * although backing storage may not be. If PBF_READ is set in
- * flags, pagebuf_iostart is called also.
- */
-xfs_buf_t *
-pagebuf_get( /* allocate a buffer */
- xfs_buftarg_t *target,/* target for buffer */
- loff_t ioff, /* starting offset of range */
- size_t isize, /* length of range */
- page_buf_flags_t flags) /* PBF_TRYLOCK */
-{
- xfs_buf_t *pb, *new_pb;
- int error = 0, i;
-
- new_pb = pagebuf_allocate(flags);
- if (unlikely(!new_pb))
- return NULL;
-
- pb = _pagebuf_find(target, ioff, isize, flags, new_pb);
- if (pb == new_pb) {
- error = _pagebuf_lookup_pages(pb, flags);
- if (unlikely(error)) {
- printk(KERN_WARNING
- "pagebuf_get: failed to lookup pages\n");
- goto no_buffer;
- }
- } else {
- pagebuf_deallocate(new_pb);
- if (unlikely(pb == NULL))
- return NULL;
- }
-
- for (i = 0; i < pb->pb_page_count; i++)
- mark_page_accessed(pb->pb_pages[i]);
-
- if (!(pb->pb_flags & PBF_MAPPED)) {
- error = _pagebuf_map_pages(pb, flags);
- if (unlikely(error)) {
- printk(KERN_WARNING
- "pagebuf_get: failed to map pages\n");
- goto no_buffer;
- }
- }
-
- XFS_STATS_INC(pb_get);
-
- /*
- * Always fill in the block number now, the mapped cases can do
- * their own overlay of this later.
- */
- pb->pb_bn = ioff;
- pb->pb_count_desired = pb->pb_buffer_length;
-
- if (flags & PBF_READ) {
- if (PBF_NOT_DONE(pb)) {
- PB_TRACE(pb, "get_read", (unsigned long)flags);
- XFS_STATS_INC(pb_get_read);
- pagebuf_iostart(pb, flags);
- } else if (flags & PBF_ASYNC) {
- PB_TRACE(pb, "get_read_async", (unsigned long)flags);
- /*
- * Read ahead call which is already satisfied,
- * drop the buffer
- */
- goto no_buffer;
- } else {
- PB_TRACE(pb, "get_read_done", (unsigned long)flags);
- /* We do not want read in the flags */
- pb->pb_flags &= ~PBF_READ;
- }
- } else {
- PB_TRACE(pb, "get_write", (unsigned long)flags);
- }
-
- return pb;
-
-no_buffer:
- if (flags & (PBF_LOCK | PBF_TRYLOCK))
- pagebuf_unlock(pb);
- pagebuf_rele(pb);
- return NULL;
-}
-
-/*
- * Create a skeletal pagebuf (no pages associated with it).
- */
-xfs_buf_t *
-pagebuf_lookup(
- xfs_buftarg_t *target,
- loff_t ioff,
- size_t isize,
- page_buf_flags_t flags)
-{
- xfs_buf_t *pb;
-
- pb = pagebuf_allocate(flags);
- if (pb) {
- _pagebuf_initialize(pb, target, ioff, isize, flags);
- }
- return pb;
-}
-
-/*
- * If we are not low on memory then do the readahead in a deadlock
- * safe manner.
- */
-void
-pagebuf_readahead(
- xfs_buftarg_t *target,
- loff_t ioff,
- size_t isize,
- page_buf_flags_t flags)
-{
- struct backing_dev_info *bdi;
-
- bdi = target->pbr_mapping->backing_dev_info;
- if (bdi_read_congested(bdi))
- return;
- if (bdi_write_congested(bdi))
- return;
-
- flags |= (PBF_TRYLOCK|PBF_READ|PBF_ASYNC|PBF_READ_AHEAD);
- pagebuf_get(target, ioff, isize, flags);
-}
-
-xfs_buf_t *
-pagebuf_get_empty(
- size_t len,
- xfs_buftarg_t *target)
-{
- xfs_buf_t *pb;
-
- pb = pagebuf_allocate(0);
- if (pb)
- _pagebuf_initialize(pb, target, 0, len, 0);
- return pb;
-}
-
-static inline struct page *
-mem_to_page(
- void *addr)
-{
- if (((unsigned long)addr < VMALLOC_START) ||
- ((unsigned long)addr >= VMALLOC_END)) {
- return virt_to_page(addr);
- } else {
- return vmalloc_to_page(addr);
- }
-}
-
-int
-pagebuf_associate_memory(
- xfs_buf_t *pb,
- void *mem,
- size_t len)
-{
- int rval;
- int i = 0;
- size_t ptr;
- size_t end, end_cur;
- off_t offset;
- int page_count;
-
- page_count = PAGE_CACHE_ALIGN(len) >> PAGE_CACHE_SHIFT;
- offset = (off_t) mem - ((off_t)mem & PAGE_CACHE_MASK);
- if (offset && (len > PAGE_CACHE_SIZE))
- page_count++;
-
- /* Free any previous set of page pointers */
- if (pb->pb_pages)
- _pagebuf_free_pages(pb);
-
- pb->pb_pages = NULL;
- pb->pb_addr = mem;
-
- rval = _pagebuf_get_pages(pb, page_count, 0);
- if (rval)
- return rval;
-
- pb->pb_offset = offset;
- ptr = (size_t) mem & PAGE_CACHE_MASK;
- end = PAGE_CACHE_ALIGN((size_t) mem + len);
- end_cur = end;
- /* set up first page */
- pb->pb_pages[0] = mem_to_page(mem);
-
- ptr += PAGE_CACHE_SIZE;
- pb->pb_page_count = ++i;
- while (ptr < end) {
- pb->pb_pages[i] = mem_to_page((void *)ptr);
- pb->pb_page_count = ++i;
- ptr += PAGE_CACHE_SIZE;
- }
- pb->pb_locked = 0;
-
- pb->pb_count_desired = pb->pb_buffer_length = len;
- pb->pb_flags |= PBF_MAPPED;
-
- return 0;
-}
-
-xfs_buf_t *
-pagebuf_get_no_daddr(
- size_t len,
- xfs_buftarg_t *target)
-{
- size_t malloc_len = len;
- xfs_buf_t *bp;
- void *data;
- int error;
-
- if (unlikely(len > 0x20000))
- goto fail;
-
- bp = pagebuf_allocate(0);
- if (unlikely(bp == NULL))
- goto fail;
- _pagebuf_initialize(bp, target, 0, len, PBF_FORCEIO);
-
- try_again:
- data = kmem_alloc(malloc_len, KM_SLEEP);
- if (unlikely(data == NULL))
- goto fail_free_buf;
-
- /* check whether alignment matches.. */
- if ((__psunsigned_t)data !=
- ((__psunsigned_t)data & ~target->pbr_smask)) {
- /* .. else double the size and try again */
- kmem_free(data, malloc_len);
- malloc_len <<= 1;
- goto try_again;
- }
-
- error = pagebuf_associate_memory(bp, data, len);
- if (error)
- goto fail_free_mem;
- bp->pb_flags |= _PBF_KMEM_ALLOC;
-
- pagebuf_unlock(bp);
-
- PB_TRACE(bp, "no_daddr", data);
- return bp;
- fail_free_mem:
- kmem_free(data, malloc_len);
- fail_free_buf:
- pagebuf_free(bp);
- fail:
- return NULL;
-}
-
-/*
- * pagebuf_hold
- *
- * Increment reference count on buffer, to hold the buffer concurrently
- * with another thread which may release (free) the buffer asynchronously.
- *
- * Must hold the buffer already to call this function.
- */
-void
-pagebuf_hold(
- xfs_buf_t *pb)
-{
- atomic_inc(&pb->pb_hold);
- PB_TRACE(pb, "hold", 0);
-}
-
-/*
- * pagebuf_rele
- *
- * pagebuf_rele releases a hold on the specified buffer. If the
- * the hold count is 1, pagebuf_rele calls pagebuf_free.
- */
-void
-pagebuf_rele(
- xfs_buf_t *pb)
-{
- pb_hash_t *hash = pb_hash(pb);
-
- PB_TRACE(pb, "rele", pb->pb_relse);
-
- if (atomic_dec_and_lock(&pb->pb_hold, &hash->pb_hash_lock)) {
- int do_free = 1;
-
- if (pb->pb_relse) {
- atomic_inc(&pb->pb_hold);
- spin_unlock(&hash->pb_hash_lock);
- (*(pb->pb_relse)) (pb);
- spin_lock(&hash->pb_hash_lock);
- do_free = 0;
- }
-
- if (pb->pb_flags & PBF_DELWRI) {
- pb->pb_flags |= PBF_ASYNC;
- atomic_inc(&pb->pb_hold);
- pagebuf_delwri_queue(pb, 0);
- do_free = 0;
- } else if (pb->pb_flags & PBF_FS_MANAGED) {
- do_free = 0;
- }
-
- if (do_free) {
- list_del_init(&pb->pb_hash_list);
- spin_unlock(&hash->pb_hash_lock);
- pagebuf_free(pb);
- } else {
- spin_unlock(&hash->pb_hash_lock);
- }
- }
-}
-
-
-/*
- * Mutual exclusion on buffers. Locking model:
- *
- * Buffers associated with inodes for which buffer locking
- * is not enabled are not protected by semaphores, and are
- * assumed to be exclusively owned by the caller. There is a
- * spinlock in the buffer, used by the caller when concurrent
- * access is possible.
- */
-
-/*
- * pagebuf_cond_lock
- *
- * pagebuf_cond_lock locks a buffer object, if it is not already locked.
- * Note that this in no way
- * locks the underlying pages, so it is only useful for synchronizing
- * concurrent use of page buffer objects, not for synchronizing independent
- * access to the underlying pages.
- */
-int
-pagebuf_cond_lock( /* lock buffer, if not locked */
- /* returns -EBUSY if locked) */
- xfs_buf_t *pb)
-{
- int locked;
-
- locked = down_trylock(&pb->pb_sema) == 0;
- if (locked) {
- PB_SET_OWNER(pb);
- }
- PB_TRACE(pb, "cond_lock", (long)locked);
- return(locked ? 0 : -EBUSY);
-}
-
-/*
- * pagebuf_lock_value
- *
- * Return lock value for a pagebuf
- */
-int
-pagebuf_lock_value(
- xfs_buf_t *pb)
-{
- return(atomic_read(&pb->pb_sema.count));
-}
-
-/*
- * pagebuf_lock
- *
- * pagebuf_lock locks a buffer object. Note that this in no way
- * locks the underlying pages, so it is only useful for synchronizing
- * concurrent use of page buffer objects, not for synchronizing independent
- * access to the underlying pages.
- */
-int
-pagebuf_lock(
- xfs_buf_t *pb)
-{
- PB_TRACE(pb, "lock", 0);
- if (atomic_read(&pb->pb_io_remaining))
- blk_run_address_space(pb->pb_target->pbr_mapping);
- down(&pb->pb_sema);
- PB_SET_OWNER(pb);
- PB_TRACE(pb, "locked", 0);
- return 0;
-}
-
-/*
- * pagebuf_unlock
- *
- * pagebuf_unlock releases the lock on the buffer object created by
- * pagebuf_lock or pagebuf_cond_lock (not any
- * pinning of underlying pages created by pagebuf_pin).
- */
-void
-pagebuf_unlock( /* unlock buffer */
- xfs_buf_t *pb) /* buffer to unlock */
-{
- PB_CLEAR_OWNER(pb);
- up(&pb->pb_sema);
- PB_TRACE(pb, "unlock", 0);
-}
-
-
-/*
- * Pinning Buffer Storage in Memory
- */
-
-/*
- * pagebuf_pin
- *
- * pagebuf_pin locks all of the memory represented by a buffer in
- * memory. Multiple calls to pagebuf_pin and pagebuf_unpin, for
- * the same or different buffers affecting a given page, will
- * properly count the number of outstanding "pin" requests. The
- * buffer may be released after the pagebuf_pin and a different
- * buffer used when calling pagebuf_unpin, if desired.
- * pagebuf_pin should be used by the file system when it wants be
- * assured that no attempt will be made to force the affected
- * memory to disk. It does not assure that a given logical page
- * will not be moved to a different physical page.
- */
-void
-pagebuf_pin(
- xfs_buf_t *pb)
-{
- atomic_inc(&pb->pb_pin_count);
- PB_TRACE(pb, "pin", (long)pb->pb_pin_count.counter);
-}
-
-/*
- * pagebuf_unpin
- *
- * pagebuf_unpin reverses the locking of memory performed by
- * pagebuf_pin. Note that both functions affected the logical
- * pages associated with the buffer, not the buffer itself.
- */
-void
-pagebuf_unpin(
- xfs_buf_t *pb)
-{
- if (atomic_dec_and_test(&pb->pb_pin_count)) {
- wake_up_all(&pb->pb_waiters);
- }
- PB_TRACE(pb, "unpin", (long)pb->pb_pin_count.counter);
-}
-
-int
-pagebuf_ispin(
- xfs_buf_t *pb)
-{
- return atomic_read(&pb->pb_pin_count);
-}
-
-/*
- * pagebuf_wait_unpin
- *
- * pagebuf_wait_unpin waits until all of the memory associated
- * with the buffer is not longer locked in memory. It returns
- * immediately if none of the affected pages are locked.
- */
-static inline void
-_pagebuf_wait_unpin(
- xfs_buf_t *pb)
-{
- DECLARE_WAITQUEUE (wait, current);
-
- if (atomic_read(&pb->pb_pin_count) == 0)
- return;
-
- add_wait_queue(&pb->pb_waiters, &wait);
- for (;;) {
- current->state = TASK_UNINTERRUPTIBLE;
- if (atomic_read(&pb->pb_pin_count) == 0)
- break;
- if (atomic_read(&pb->pb_io_remaining))
- blk_run_address_space(pb->pb_target->pbr_mapping);
- schedule();
- }
- remove_wait_queue(&pb->pb_waiters, &wait);
- current->state = TASK_RUNNING;
-}
-
-/*
- * Buffer Utility Routines
- */
-
-/*
- * pagebuf_iodone
- *
- * pagebuf_iodone marks a buffer for which I/O is in progress
- * done with respect to that I/O. The pb_iodone routine, if
- * present, will be called as a side-effect.
- */
-void
-pagebuf_iodone_work(
- void *v)
-{
- xfs_buf_t *bp = (xfs_buf_t *)v;
-
- if (bp->pb_iodone)
- (*(bp->pb_iodone))(bp);
- else if (bp->pb_flags & PBF_ASYNC)
- xfs_buf_relse(bp);
-}
-
-void
-pagebuf_iodone(
- xfs_buf_t *pb,
- int dataio,
- int schedule)
-{
- pb->pb_flags &= ~(PBF_READ | PBF_WRITE);
- if (pb->pb_error == 0) {
- pb->pb_flags &= ~(PBF_PARTIAL | PBF_NONE);
- }
-
- PB_TRACE(pb, "iodone", pb->pb_iodone);
-
- if ((pb->pb_iodone) || (pb->pb_flags & PBF_ASYNC)) {
- if (schedule) {
- INIT_WORK(&pb->pb_iodone_work, pagebuf_iodone_work, pb);
- queue_work(dataio ? pagebuf_dataio_workqueue :
- pagebuf_logio_workqueue, &pb->pb_iodone_work);
- } else {
- pagebuf_iodone_work(pb);
- }
- } else {
- up(&pb->pb_iodonesema);
- }
-}
-
-/*
- * pagebuf_ioerror
- *
- * pagebuf_ioerror sets the error code for a buffer.
- */
-void
-pagebuf_ioerror( /* mark/clear buffer error flag */
- xfs_buf_t *pb, /* buffer to mark */
- int error) /* error to store (0 if none) */
-{
- ASSERT(error >= 0 && error <= 0xffff);
- pb->pb_error = (unsigned short)error;
- PB_TRACE(pb, "ioerror", (unsigned long)error);
-}
-
-/*
- * pagebuf_iostart
- *
- * pagebuf_iostart initiates I/O on a buffer, based on the flags supplied.
- * If necessary, it will arrange for any disk space allocation required,
- * and it will break up the request if the block mappings require it.
- * The pb_iodone routine in the buffer supplied will only be called
- * when all of the subsidiary I/O requests, if any, have been completed.
- * pagebuf_iostart calls the pagebuf_ioinitiate routine or
- * pagebuf_iorequest, if the former routine is not defined, to start
- * the I/O on a given low-level request.
- */
-int
-pagebuf_iostart( /* start I/O on a buffer */
- xfs_buf_t *pb, /* buffer to start */
- page_buf_flags_t flags) /* PBF_LOCK, PBF_ASYNC, PBF_READ, */
- /* PBF_WRITE, PBF_DELWRI, */
- /* PBF_DONT_BLOCK */
-{
- int status = 0;
-
- PB_TRACE(pb, "iostart", (unsigned long)flags);
-
- if (flags & PBF_DELWRI) {
- pb->pb_flags &= ~(PBF_READ | PBF_WRITE | PBF_ASYNC);
- pb->pb_flags |= flags & (PBF_DELWRI | PBF_ASYNC);
- pagebuf_delwri_queue(pb, 1);
- return status;
- }
-
- pb->pb_flags &= ~(PBF_READ | PBF_WRITE | PBF_ASYNC | PBF_DELWRI | \
- PBF_READ_AHEAD | _PBF_RUN_QUEUES);
- pb->pb_flags |= flags & (PBF_READ | PBF_WRITE | PBF_ASYNC | \
- PBF_READ_AHEAD | _PBF_RUN_QUEUES);
-
- BUG_ON(pb->pb_bn == XFS_BUF_DADDR_NULL);
-
- /* For writes allow an alternate strategy routine to precede
- * the actual I/O request (which may not be issued at all in
- * a shutdown situation, for example).
- */
- status = (flags & PBF_WRITE) ?
- pagebuf_iostrategy(pb) : pagebuf_iorequest(pb);
-
- /* Wait for I/O if we are not an async request.
- * Note: async I/O request completion will release the buffer,
- * and that can already be done by this point. So using the
- * buffer pointer from here on, after async I/O, is invalid.
- */
- if (!status && !(flags & PBF_ASYNC))
- status = pagebuf_iowait(pb);
-
- return status;
-}
-
-/*
- * Helper routine for pagebuf_iorequest
- */
-
-STATIC __inline__ int
-_pagebuf_iolocked(
- xfs_buf_t *pb)
-{
- ASSERT(pb->pb_flags & (PBF_READ|PBF_WRITE));
- if (pb->pb_flags & PBF_READ)
- return pb->pb_locked;
- return 0;
-}
-
-STATIC __inline__ void
-_pagebuf_iodone(
- xfs_buf_t *pb,
- int schedule)
-{
- if (atomic_dec_and_test(&pb->pb_io_remaining) == 1) {
- pb->pb_locked = 0;
- pagebuf_iodone(pb, (pb->pb_flags & PBF_FS_DATAIOD), schedule);
- }
-}
-
-STATIC int
-bio_end_io_pagebuf(
- struct bio *bio,
- unsigned int bytes_done,
- int error)
-{
- xfs_buf_t *pb = (xfs_buf_t *)bio->bi_private;
- unsigned int i, blocksize = pb->pb_target->pbr_bsize;
- unsigned int sectorshift = pb->pb_target->pbr_sshift;
- struct bio_vec *bvec = bio->bi_io_vec;
-
- if (bio->bi_size)
- return 1;
-
- if (!test_bit(BIO_UPTODATE, &bio->bi_flags))
- pb->pb_error = EIO;
-
- for (i = 0; i < bio->bi_vcnt; i++, bvec++) {
- struct page *page = bvec->bv_page;
-
- if (pb->pb_error) {
- SetPageError(page);
- } else if (blocksize == PAGE_CACHE_SIZE) {
- SetPageUptodate(page);
- } else if (!PagePrivate(page) &&
- (pb->pb_flags & _PBF_PAGE_CACHE)) {
- unsigned long j, range;
-
- ASSERT(blocksize < PAGE_CACHE_SIZE);
- range = (bvec->bv_offset + bvec->bv_len) >> sectorshift;
- for (j = bvec->bv_offset >> sectorshift; j < range; j++)
- set_bit(j, &page->private);
- if (page->private == (unsigned long)(PAGE_CACHE_SIZE-1))
- SetPageUptodate(page);
- }
-
- if (_pagebuf_iolocked(pb)) {
- unlock_page(page);
- }
- }
-
- _pagebuf_iodone(pb, 1);
- bio_put(bio);
- return 0;
-}
-
-void
-_pagebuf_ioapply(
- xfs_buf_t *pb)
-{
- int i, map_i, total_nr_pages, nr_pages;
- struct bio *bio;
- int offset = pb->pb_offset;
- int size = pb->pb_count_desired;
- sector_t sector = pb->pb_bn;
- unsigned int blocksize = pb->pb_target->pbr_bsize;
- int locking = _pagebuf_iolocked(pb);
-
- total_nr_pages = pb->pb_page_count;
- map_i = 0;
-
- /* Special code path for reading a sub page size pagebuf in --
- * we populate up the whole page, and hence the other metadata
- * in the same page. This optimization is only valid when the
- * filesystem block size and the page size are equal.
- */
- if ((pb->pb_buffer_length < PAGE_CACHE_SIZE) &&
- (pb->pb_flags & PBF_READ) && locking &&
- (blocksize == PAGE_CACHE_SIZE)) {
- bio = bio_alloc(GFP_NOIO, 1);
-
- bio->bi_bdev = pb->pb_target->pbr_bdev;
- bio->bi_sector = sector - (offset >> BBSHIFT);
- bio->bi_end_io = bio_end_io_pagebuf;
- bio->bi_private = pb;
-
- bio_add_page(bio, pb->pb_pages[0], PAGE_CACHE_SIZE, 0);
- size = 0;
-
- atomic_inc(&pb->pb_io_remaining);
-
- goto submit_io;
- }
-
- /* Lock down the pages which we need to for the request */
- if (locking && (pb->pb_flags & PBF_WRITE) && (pb->pb_locked == 0)) {
- for (i = 0; size; i++) {
- int nbytes = PAGE_CACHE_SIZE - offset;
- struct page *page = pb->pb_pages[i];
-
- if (nbytes > size)
- nbytes = size;
-
- lock_page(page);
-
- size -= nbytes;
- offset = 0;
- }
- offset = pb->pb_offset;
- size = pb->pb_count_desired;
- }
-
-next_chunk:
- atomic_inc(&pb->pb_io_remaining);
- nr_pages = BIO_MAX_SECTORS >> (PAGE_SHIFT - BBSHIFT);
- if (nr_pages > total_nr_pages)
- nr_pages = total_nr_pages;
-
- bio = bio_alloc(GFP_NOIO, nr_pages);
- bio->bi_bdev = pb->pb_target->pbr_bdev;
- bio->bi_sector = sector;
- bio->bi_end_io = bio_end_io_pagebuf;
- bio->bi_private = pb;
-
- for (; size && nr_pages; nr_pages--, map_i++) {
- int nbytes = PAGE_CACHE_SIZE - offset;
-
- if (nbytes > size)
- nbytes = size;
-
- if (bio_add_page(bio, pb->pb_pages[map_i],
- nbytes, offset) < nbytes)
- break;
-
- offset = 0;
- sector += nbytes >> BBSHIFT;
- size -= nbytes;
- total_nr_pages--;
- }
-
-submit_io:
- if (likely(bio->bi_size)) {
- submit_bio((pb->pb_flags & PBF_READ) ? READ : WRITE, bio);
- if (size)
- goto next_chunk;
- } else {
- bio_put(bio);
- pagebuf_ioerror(pb, EIO);
- }
-
- if (pb->pb_flags & _PBF_RUN_QUEUES) {
- pb->pb_flags &= ~_PBF_RUN_QUEUES;
- if (atomic_read(&pb->pb_io_remaining) > 1)
- blk_run_address_space(pb->pb_target->pbr_mapping);
- }
-}
-
-/*
- * pagebuf_iorequest -- the core I/O request routine.
- */
-int
-pagebuf_iorequest( /* start real I/O */
- xfs_buf_t *pb) /* buffer to convey to device */
-{
- PB_TRACE(pb, "iorequest", 0);
-
- if (pb->pb_flags & PBF_DELWRI) {
- pagebuf_delwri_queue(pb, 1);
- return 0;
- }
-
- if (pb->pb_flags & PBF_WRITE) {
- _pagebuf_wait_unpin(pb);
- }
-
- pagebuf_hold(pb);
-
- /* Set the count to 1 initially, this will stop an I/O
- * completion callout which happens before we have started
- * all the I/O from calling pagebuf_iodone too early.
- */
- atomic_set(&pb->pb_io_remaining, 1);
- _pagebuf_ioapply(pb);
- _pagebuf_iodone(pb, 0);
-
- pagebuf_rele(pb);
- return 0;
-}
-
-/*
- * pagebuf_iowait
- *
- * pagebuf_iowait waits for I/O to complete on the buffer supplied.
- * It returns immediately if no I/O is pending. In any case, it returns
- * the error code, if any, or 0 if there is no error.
- */
-int
-pagebuf_iowait(
- xfs_buf_t *pb)
-{
- PB_TRACE(pb, "iowait", 0);
- if (atomic_read(&pb->pb_io_remaining))
- blk_run_address_space(pb->pb_target->pbr_mapping);
- down(&pb->pb_iodonesema);
- PB_TRACE(pb, "iowaited", (long)pb->pb_error);
- return pb->pb_error;
-}
-
-caddr_t
-pagebuf_offset(
- xfs_buf_t *pb,
- size_t offset)
-{
- struct page *page;
-
- offset += pb->pb_offset;
-
- page = pb->pb_pages[offset >> PAGE_CACHE_SHIFT];
- return (caddr_t) page_address(page) + (offset & (PAGE_CACHE_SIZE - 1));
-}
-
-/*
- * pagebuf_iomove
- *
- * Move data into or out of a buffer.
- */
-void
-pagebuf_iomove(
- xfs_buf_t *pb, /* buffer to process */
- size_t boff, /* starting buffer offset */
- size_t bsize, /* length to copy */
- caddr_t data, /* data address */
- page_buf_rw_t mode) /* read/write flag */
-{
- size_t bend, cpoff, csize;
- struct page *page;
-
- bend = boff + bsize;
- while (boff < bend) {
- page = pb->pb_pages[page_buf_btoct(boff + pb->pb_offset)];
- cpoff = page_buf_poff(boff + pb->pb_offset);
- csize = min_t(size_t,
- PAGE_CACHE_SIZE-cpoff, pb->pb_count_desired-boff);
-
- ASSERT(((csize + cpoff) <= PAGE_CACHE_SIZE));
-
- switch (mode) {
- case PBRW_ZERO:
- memset(page_address(page) + cpoff, 0, csize);
- break;
- case PBRW_READ:
- memcpy(data, page_address(page) + cpoff, csize);
- break;
- case PBRW_WRITE:
- memcpy(page_address(page) + cpoff, data, csize);
- }
-
- boff += csize;
- data += csize;
- }
-}
-
-/*
- * Handling of buftargs.
- */
-
-void
-xfs_free_buftarg(
- xfs_buftarg_t *btp,
- int external)
-{
- xfs_flush_buftarg(btp, 1);
- if (external)
- xfs_blkdev_put(btp->pbr_bdev);
- kmem_free(btp, sizeof(*btp));
-}
-
-void
-xfs_incore_relse(
- xfs_buftarg_t *btp,
- int delwri_only,
- int wait)
-{
- invalidate_bdev(btp->pbr_bdev, 1);
- truncate_inode_pages(btp->pbr_mapping, 0LL);
-}
-
-void
-xfs_setsize_buftarg(
- xfs_buftarg_t *btp,
- unsigned int blocksize,
- unsigned int sectorsize)
-{
- btp->pbr_bsize = blocksize;
- btp->pbr_sshift = ffs(sectorsize) - 1;
- btp->pbr_smask = sectorsize - 1;
-
- if (set_blocksize(btp->pbr_bdev, sectorsize)) {
- printk(KERN_WARNING
- "XFS: Cannot set_blocksize to %u on device %s\n",
- sectorsize, XFS_BUFTARG_NAME(btp));
- }
-}
-
-xfs_buftarg_t *
-xfs_alloc_buftarg(
- struct block_device *bdev)
-{
- xfs_buftarg_t *btp;
-
- btp = kmem_zalloc(sizeof(*btp), KM_SLEEP);
-
- btp->pbr_dev = bdev->bd_dev;
- btp->pbr_bdev = bdev;
- btp->pbr_mapping = bdev->bd_inode->i_mapping;
- xfs_setsize_buftarg(btp, PAGE_CACHE_SIZE, bdev_hardsect_size(bdev));
-
- return btp;
-}
-
-
-/*
- * Pagebuf delayed write buffer handling
- */
-
-STATIC LIST_HEAD(pbd_delwrite_queue);
-STATIC spinlock_t pbd_delwrite_lock = SPIN_LOCK_UNLOCKED;
-
-STATIC void
-pagebuf_delwri_queue(
- xfs_buf_t *pb,
- int unlock)
-{
- PB_TRACE(pb, "delwri_q", (long)unlock);
- ASSERT(pb->pb_flags & PBF_DELWRI);
-
- spin_lock(&pbd_delwrite_lock);
- /* If already in the queue, dequeue and place at tail */
- if (!list_empty(&pb->pb_list)) {
- if (unlock) {
- atomic_dec(&pb->pb_hold);
- }
- list_del(&pb->pb_list);
- }
-
- list_add_tail(&pb->pb_list, &pbd_delwrite_queue);
- pb->pb_queuetime = jiffies;
- spin_unlock(&pbd_delwrite_lock);
-
- if (unlock)
- pagebuf_unlock(pb);
-}
-
-void
-pagebuf_delwri_dequeue(
- xfs_buf_t *pb)
-{
- PB_TRACE(pb, "delwri_uq", 0);
- spin_lock(&pbd_delwrite_lock);
- list_del_init(&pb->pb_list);
- pb->pb_flags &= ~PBF_DELWRI;
- spin_unlock(&pbd_delwrite_lock);
-}
-
-STATIC void
-pagebuf_runall_queues(
- struct workqueue_struct *queue)
-{
- flush_workqueue(queue);
-}
-
-/* Defines for pagebuf daemon */
-STATIC DECLARE_COMPLETION(pagebuf_daemon_done);
-STATIC struct task_struct *pagebuf_daemon_task;
-STATIC int pagebuf_daemon_active;
-STATIC int force_flush;
-
-STATIC void
-pagebuf_daemon_wakeup(void)
-{
- force_flush = 1;
- barrier();
- wake_up_process(pagebuf_daemon_task);
-}
-
-STATIC int
-pagebuf_daemon(
- void *data)
-{
- struct list_head tmp;
- xfs_buf_t *pb, *n;
-
- /* Set up the thread */
- daemonize("xfsbufd");
- current->flags |= PF_MEMALLOC;
-
- pagebuf_daemon_task = current;
- pagebuf_daemon_active = 1;
- barrier();
-
- INIT_LIST_HEAD(&tmp);
- do {
- /* swsusp */
- if (current->flags & PF_FREEZE)
- refrigerator(PF_FREEZE);
-
- set_current_state(TASK_INTERRUPTIBLE);
- schedule_timeout(xfs_flush_interval);
-
- spin_lock(&pbd_delwrite_lock);
- list_for_each_entry_safe(pb, n, &pbd_delwrite_queue, pb_list) {
- PB_TRACE(pb, "walkq1", (long)pagebuf_ispin(pb));
- ASSERT(pb->pb_flags & PBF_DELWRI);
-
- if (!pagebuf_ispin(pb) && !pagebuf_cond_lock(pb)) {
- if (!force_flush &&
- time_before(jiffies,
- pb->pb_queuetime +
- xfs_age_buffer)) {
- pagebuf_unlock(pb);
- break;
- }
-
- pb->pb_flags &= ~PBF_DELWRI;
- pb->pb_flags |= PBF_WRITE;
- list_move(&pb->pb_list, &tmp);
- }
- }
- spin_unlock(&pbd_delwrite_lock);
-
- while (!list_empty(&tmp)) {
- pb = list_entry(tmp.next, xfs_buf_t, pb_list);
- list_del_init(&pb->pb_list);
- pagebuf_iostrategy(pb);
- blk_run_address_space(pb->pb_target->pbr_mapping);
- }
-
- if (as_list_len > 0)
- purge_addresses();
-
- force_flush = 0;
- } while (pagebuf_daemon_active);
-
- complete_and_exit(&pagebuf_daemon_done, 0);
-}
-
-/*
- * Go through all incore buffers, and release buffers if they belong to
- * the given device. This is used in filesystem error handling to
- * preserve the consistency of its metadata.
- */
-int
-xfs_flush_buftarg(
- xfs_buftarg_t *target,
- int wait)
-{
- struct list_head tmp;
- xfs_buf_t *pb, *n;
- int pincount = 0;
-
- pagebuf_runall_queues(pagebuf_dataio_workqueue);
- pagebuf_runall_queues(pagebuf_logio_workqueue);
-
- INIT_LIST_HEAD(&tmp);
- spin_lock(&pbd_delwrite_lock);
- list_for_each_entry_safe(pb, n, &pbd_delwrite_queue, pb_list) {
-
- if (pb->pb_target != target)
- continue;
-
- ASSERT(pb->pb_flags & PBF_DELWRI);
- PB_TRACE(pb, "walkq2", (long)pagebuf_ispin(pb));
- if (pagebuf_ispin(pb)) {
- pincount++;
- continue;
- }
-
- pb->pb_flags &= ~PBF_DELWRI;
- pb->pb_flags |= PBF_WRITE;
- list_move(&pb->pb_list, &tmp);
- }
- spin_unlock(&pbd_delwrite_lock);
-
- /*
- * Dropped the delayed write list lock, now walk the temporary list
- */
- list_for_each_entry_safe(pb, n, &tmp, pb_list) {
- if (wait)
- pb->pb_flags &= ~PBF_ASYNC;
- else
- list_del_init(&pb->pb_list);
-
- pagebuf_lock(pb);
- pagebuf_iostrategy(pb);
- }
-
- /*
- * Remaining list items must be flushed before returning
- */
- while (!list_empty(&tmp)) {
- pb = list_entry(tmp.next, xfs_buf_t, pb_list);
-
- list_del_init(&pb->pb_list);
- xfs_iowait(pb);
- xfs_buf_relse(pb);
- }
-
- if (wait)
- blk_run_address_space(target->pbr_mapping);
-
- return pincount;
-}
-
-STATIC int
-pagebuf_daemon_start(void)
-{
- int rval;
-
- pagebuf_logio_workqueue = create_workqueue("xfslogd");
- if (!pagebuf_logio_workqueue)
- return -ENOMEM;
-
- pagebuf_dataio_workqueue = create_workqueue("xfsdatad");
- if (!pagebuf_dataio_workqueue) {
- destroy_workqueue(pagebuf_logio_workqueue);
- return -ENOMEM;
- }
-
- rval = kernel_thread(pagebuf_daemon, NULL, CLONE_FS|CLONE_FILES);
- if (rval < 0) {
- destroy_workqueue(pagebuf_logio_workqueue);
- destroy_workqueue(pagebuf_dataio_workqueue);
- }
-
- return rval;
-}
-
-/*
- * pagebuf_daemon_stop
- *
- * Note: do not mark as __exit, it is called from pagebuf_terminate.
- */
-STATIC void
-pagebuf_daemon_stop(void)
-{
- pagebuf_daemon_active = 0;
- barrier();
- wait_for_completion(&pagebuf_daemon_done);
-
- destroy_workqueue(pagebuf_logio_workqueue);
- destroy_workqueue(pagebuf_dataio_workqueue);
-}
-
-/*
- * Initialization and Termination
- */
-
-int __init
-pagebuf_init(void)
-{
- int i;
-
- pagebuf_cache = kmem_cache_create("xfs_buf_t", sizeof(xfs_buf_t), 0,
- SLAB_HWCACHE_ALIGN, NULL, NULL);
- if (pagebuf_cache == NULL) {
- printk("pagebuf: couldn't init pagebuf cache\n");
- pagebuf_terminate();
- return -ENOMEM;
- }
-
- for (i = 0; i < NHASH; i++) {
- spin_lock_init(&pbhash[i].pb_hash_lock);
- INIT_LIST_HEAD(&pbhash[i].pb_hash);
- }
-
-#ifdef PAGEBUF_TRACE
- pagebuf_trace_buf = ktrace_alloc(PAGEBUF_TRACE_SIZE, KM_SLEEP);
-#endif
-
- pagebuf_daemon_start();
- return 0;
-}
-
-
-/*
- * pagebuf_terminate.
- *
- * Note: do not mark as __exit, this is also called from the __init code.
- */
-void
-pagebuf_terminate(void)
-{
- pagebuf_daemon_stop();
-
-#ifdef PAGEBUF_TRACE
- ktrace_free(pagebuf_trace_buf);
-#endif
-
- kmem_cache_destroy(pagebuf_cache);
-}
+++ /dev/null
-/*
- * Copyright (c) 2000-2004 Silicon Graphics, Inc. All Rights Reserved.
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of version 2 of the GNU General Public License as
- * published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it would be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
- *
- * Further, this software is distributed without any warranty that it is
- * free of the rightful claim of any third person regarding infringement
- * or the like. Any license provided herein, whether implied or
- * otherwise, applies only to this software file. Patent licenses, if
- * any, provided herein do not apply to combinations of this program with
- * other software, or any other product whatsoever.
- *
- * You should have received a copy of the GNU General Public License along
- * with this program; if not, write the Free Software Foundation, Inc., 59
- * Temple Place - Suite 330, Boston MA 02111-1307, USA.
- *
- * Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy,
- * Mountain View, CA 94043, or:
- *
- * http://www.sgi.com
- *
- * For further information regarding this notice, see:
- *
- * http://oss.sgi.com/projects/GenInfo/SGIGPLNoticeExplan/
- */
-
-/*
- * Written by Steve Lord, Jim Mostek, Russell Cattelan at SGI
- */
-
-#ifndef __XFS_BUF_H__
-#define __XFS_BUF_H__
-
-#include <linux/config.h>
-#include <linux/list.h>
-#include <linux/types.h>
-#include <linux/spinlock.h>
-#include <asm/system.h>
-#include <linux/mm.h>
-#include <linux/fs.h>
-#include <linux/buffer_head.h>
-#include <linux/uio.h>
-
-/*
- * Base types
- */
-
-#define XFS_BUF_DADDR_NULL ((xfs_daddr_t) (-1LL))
-
-#define page_buf_ctob(pp) ((pp) * PAGE_CACHE_SIZE)
-#define page_buf_btoc(dd) (((dd) + PAGE_CACHE_SIZE - 1) >> PAGE_CACHE_SHIFT)
-#define page_buf_btoct(dd) ((dd) >> PAGE_CACHE_SHIFT)
-#define page_buf_poff(aa) ((aa) & ~PAGE_CACHE_MASK)
-
-typedef enum page_buf_rw_e {
- PBRW_READ = 1, /* transfer into target memory */
- PBRW_WRITE = 2, /* transfer from target memory */
- PBRW_ZERO = 3 /* Zero target memory */
-} page_buf_rw_t;
-
-
-typedef enum page_buf_flags_e { /* pb_flags values */
- PBF_READ = (1 << 0), /* buffer intended for reading from device */
- PBF_WRITE = (1 << 1), /* buffer intended for writing to device */
- PBF_MAPPED = (1 << 2), /* buffer mapped (pb_addr valid) */
- PBF_PARTIAL = (1 << 3), /* buffer partially read */
- PBF_ASYNC = (1 << 4), /* initiator will not wait for completion */
- PBF_NONE = (1 << 5), /* buffer not read at all */
- PBF_DELWRI = (1 << 6), /* buffer has dirty pages */
- PBF_STALE = (1 << 7), /* buffer has been staled, do not find it */
- PBF_FS_MANAGED = (1 << 8), /* filesystem controls freeing memory */
- PBF_FS_DATAIOD = (1 << 9), /* schedule IO completion on fs datad */
- PBF_FORCEIO = (1 << 10), /* ignore any cache state */
- PBF_FLUSH = (1 << 11), /* flush disk write cache */
- PBF_READ_AHEAD = (1 << 12), /* asynchronous read-ahead */
-
- /* flags used only as arguments to access routines */
- PBF_LOCK = (1 << 14), /* lock requested */
- PBF_TRYLOCK = (1 << 15), /* lock requested, but do not wait */
- PBF_DONT_BLOCK = (1 << 16), /* do not block in current thread */
-
- /* flags used only internally */
- _PBF_PAGE_CACHE = (1 << 17),/* backed by pagecache */
- _PBF_KMEM_ALLOC = (1 << 18),/* backed by kmem_alloc() */
- _PBF_RUN_QUEUES = (1 << 19),/* run block device task queue */
-} page_buf_flags_t;
-
-#define PBF_UPDATE (PBF_READ | PBF_WRITE)
-#define PBF_NOT_DONE(pb) (((pb)->pb_flags & (PBF_PARTIAL|PBF_NONE)) != 0)
-#define PBF_DONE(pb) (((pb)->pb_flags & (PBF_PARTIAL|PBF_NONE)) == 0)
-
-typedef struct xfs_buftarg {
- dev_t pbr_dev;
- struct block_device *pbr_bdev;
- struct address_space *pbr_mapping;
- unsigned int pbr_bsize;
- unsigned int pbr_sshift;
- size_t pbr_smask;
-} xfs_buftarg_t;
-
-/*
- * xfs_buf_t: Buffer structure for page cache-based buffers
- *
- * This buffer structure is used by the page cache buffer management routines
- * to refer to an assembly of pages forming a logical buffer. The actual
- * I/O is performed with buffer_head or bio structures, as required by drivers,
- * for drivers which do not understand this structure. The buffer structure is
- * used on temporary basis only, and discarded when released.
- *
- * The real data storage is recorded in the page cache. Metadata is
- * hashed to the inode for the block device on which the file system resides.
- * File data is hashed to the inode for the file. Pages which are only
- * partially filled with data have bits set in their block_map entry
- * to indicate which disk blocks in the page are not valid.
- */
-
-struct xfs_buf;
-typedef void (*page_buf_iodone_t)(struct xfs_buf *);
- /* call-back function on I/O completion */
-typedef void (*page_buf_relse_t)(struct xfs_buf *);
- /* call-back function on I/O completion */
-typedef int (*page_buf_bdstrat_t)(struct xfs_buf *);
-
-#define PB_PAGES 4
-
-typedef struct xfs_buf {
- struct semaphore pb_sema; /* semaphore for lockables */
- unsigned long pb_queuetime; /* time buffer was queued */
- atomic_t pb_pin_count; /* pin count */
- wait_queue_head_t pb_waiters; /* unpin waiters */
- struct list_head pb_list;
- page_buf_flags_t pb_flags; /* status flags */
- struct list_head pb_hash_list;
- xfs_buftarg_t *pb_target; /* logical object */
- atomic_t pb_hold; /* reference count */
- xfs_daddr_t pb_bn; /* block number for I/O */
- loff_t pb_file_offset; /* offset in file */
- size_t pb_buffer_length; /* size of buffer in bytes */
- size_t pb_count_desired; /* desired transfer size */
- void *pb_addr; /* virtual address of buffer */
- struct work_struct pb_iodone_work;
- atomic_t pb_io_remaining;/* #outstanding I/O requests */
- page_buf_iodone_t pb_iodone; /* I/O completion function */
- page_buf_relse_t pb_relse; /* releasing function */
- page_buf_bdstrat_t pb_strat; /* pre-write function */
- struct semaphore pb_iodonesema; /* Semaphore for I/O waiters */
- void *pb_fspriv;
- void *pb_fspriv2;
- void *pb_fspriv3;
- unsigned short pb_error; /* error code on I/O */
- unsigned short pb_page_count; /* size of page array */
- unsigned short pb_offset; /* page offset in first page */
- unsigned char pb_locked; /* page array is locked */
- unsigned char pb_hash_index; /* hash table index */
- struct page **pb_pages; /* array of page pointers */
- struct page *pb_page_array[PB_PAGES]; /* inline pages */
-#ifdef PAGEBUF_LOCK_TRACKING
- int pb_last_holder;
-#endif
-} xfs_buf_t;
-
-
-/* Finding and Reading Buffers */
-
-extern xfs_buf_t *pagebuf_find( /* find buffer for block if */
- /* the block is in memory */
- xfs_buftarg_t *, /* inode for block */
- loff_t, /* starting offset of range */
- size_t, /* length of range */
- page_buf_flags_t); /* PBF_LOCK */
-
-extern xfs_buf_t *pagebuf_get( /* allocate a buffer */
- xfs_buftarg_t *, /* inode for buffer */
- loff_t, /* starting offset of range */
- size_t, /* length of range */
- page_buf_flags_t); /* PBF_LOCK, PBF_READ, */
- /* PBF_ASYNC */
-
-extern xfs_buf_t *pagebuf_lookup(
- xfs_buftarg_t *,
- loff_t, /* starting offset of range */
- size_t, /* length of range */
- page_buf_flags_t); /* PBF_READ, PBF_WRITE, */
- /* PBF_FORCEIO, */
-
-extern xfs_buf_t *pagebuf_get_empty( /* allocate pagebuf struct with */
- /* no memory or disk address */
- size_t len,
- xfs_buftarg_t *); /* mount point "fake" inode */
-
-extern xfs_buf_t *pagebuf_get_no_daddr(/* allocate pagebuf struct */
- /* without disk address */
- size_t len,
- xfs_buftarg_t *); /* mount point "fake" inode */
-
-extern int pagebuf_associate_memory(
- xfs_buf_t *,
- void *,
- size_t);
-
-extern void pagebuf_hold( /* increment reference count */
- xfs_buf_t *); /* buffer to hold */
-
-extern void pagebuf_readahead( /* read ahead into cache */
- xfs_buftarg_t *, /* target for buffer (or NULL) */
- loff_t, /* starting offset of range */
- size_t, /* length of range */
- page_buf_flags_t); /* additional read flags */
-
-/* Releasing Buffers */
-
-extern void pagebuf_free( /* deallocate a buffer */
- xfs_buf_t *); /* buffer to deallocate */
-
-extern void pagebuf_rele( /* release hold on a buffer */
- xfs_buf_t *); /* buffer to release */
-
-/* Locking and Unlocking Buffers */
-
-extern int pagebuf_cond_lock( /* lock buffer, if not locked */
- /* (returns -EBUSY if locked) */
- xfs_buf_t *); /* buffer to lock */
-
-extern int pagebuf_lock_value( /* return count on lock */
- xfs_buf_t *); /* buffer to check */
-
-extern int pagebuf_lock( /* lock buffer */
- xfs_buf_t *); /* buffer to lock */
-
-extern void pagebuf_unlock( /* unlock buffer */
- xfs_buf_t *); /* buffer to unlock */
-
-/* Buffer Read and Write Routines */
-
-extern void pagebuf_iodone( /* mark buffer I/O complete */
- xfs_buf_t *, /* buffer to mark */
- int, /* use data/log helper thread. */
- int); /* run completion locally, or in
- * a helper thread. */
-
-extern void pagebuf_ioerror( /* mark buffer in error (or not) */
- xfs_buf_t *, /* buffer to mark */
- int); /* error to store (0 if none) */
-
-extern int pagebuf_iostart( /* start I/O on a buffer */
- xfs_buf_t *, /* buffer to start */
- page_buf_flags_t); /* PBF_LOCK, PBF_ASYNC, */
- /* PBF_READ, PBF_WRITE, */
- /* PBF_DELWRI */
-
-extern int pagebuf_iorequest( /* start real I/O */
- xfs_buf_t *); /* buffer to convey to device */
-
-extern int pagebuf_iowait( /* wait for buffer I/O done */
- xfs_buf_t *); /* buffer to wait on */
-
-extern void pagebuf_iomove( /* move data in/out of pagebuf */
- xfs_buf_t *, /* buffer to manipulate */
- size_t, /* starting buffer offset */
- size_t, /* length in buffer */
- caddr_t, /* data pointer */
- page_buf_rw_t); /* direction */
-
-static inline int pagebuf_iostrategy(xfs_buf_t *pb)
-{
- return pb->pb_strat ? pb->pb_strat(pb) : pagebuf_iorequest(pb);
-}
-
-static inline int pagebuf_geterror(xfs_buf_t *pb)
-{
- return pb ? pb->pb_error : ENOMEM;
-}
-
-/* Buffer Utility Routines */
-
-extern caddr_t pagebuf_offset( /* pointer at offset in buffer */
- xfs_buf_t *, /* buffer to offset into */
- size_t); /* offset */
-
-/* Pinning Buffer Storage in Memory */
-
-extern void pagebuf_pin( /* pin buffer in memory */
- xfs_buf_t *); /* buffer to pin */
-
-extern void pagebuf_unpin( /* unpin buffered data */
- xfs_buf_t *); /* buffer to unpin */
-
-extern int pagebuf_ispin( /* check if buffer is pinned */
- xfs_buf_t *); /* buffer to check */
-
-/* Delayed Write Buffer Routines */
-
-extern void pagebuf_delwri_dequeue(xfs_buf_t *);
-
-/* Buffer Daemon Setup Routines */
-
-extern int pagebuf_init(void);
-extern void pagebuf_terminate(void);
-
-
-#ifdef PAGEBUF_TRACE
-extern ktrace_t *pagebuf_trace_buf;
-extern void pagebuf_trace(
- xfs_buf_t *, /* buffer being traced */
- char *, /* description of operation */
- void *, /* arbitrary diagnostic value */
- void *); /* return address */
-#else
-# define pagebuf_trace(pb, id, ptr, ra) do { } while (0)
-#endif
-
-#define pagebuf_target_name(target) \
- ({ char __b[BDEVNAME_SIZE]; bdevname((target)->pbr_bdev, __b); __b; })
-
-
-
-
-
-/* These are just for xfs_syncsub... it sets an internal variable
- * then passes it to VOP_FLUSH_PAGES or adds the flags to a newly gotten buf_t
- */
-#define XFS_B_ASYNC PBF_ASYNC
-#define XFS_B_DELWRI PBF_DELWRI
-#define XFS_B_READ PBF_READ
-#define XFS_B_WRITE PBF_WRITE
-#define XFS_B_STALE PBF_STALE
-
-#define XFS_BUF_TRYLOCK PBF_TRYLOCK
-#define XFS_INCORE_TRYLOCK PBF_TRYLOCK
-#define XFS_BUF_LOCK PBF_LOCK
-#define XFS_BUF_MAPPED PBF_MAPPED
-
-#define BUF_BUSY PBF_DONT_BLOCK
-
-#define XFS_BUF_BFLAGS(x) ((x)->pb_flags)
-#define XFS_BUF_ZEROFLAGS(x) \
- ((x)->pb_flags &= ~(PBF_READ|PBF_WRITE|PBF_ASYNC|PBF_DELWRI))
-
-#define XFS_BUF_STALE(x) ((x)->pb_flags |= XFS_B_STALE)
-#define XFS_BUF_UNSTALE(x) ((x)->pb_flags &= ~XFS_B_STALE)
-#define XFS_BUF_ISSTALE(x) ((x)->pb_flags & XFS_B_STALE)
-#define XFS_BUF_SUPER_STALE(x) do { \
- XFS_BUF_STALE(x); \
- xfs_buf_undelay(x); \
- XFS_BUF_DONE(x); \
- } while (0)
-
-#define XFS_BUF_MANAGE PBF_FS_MANAGED
-#define XFS_BUF_UNMANAGE(x) ((x)->pb_flags &= ~PBF_FS_MANAGED)
-
-static inline void xfs_buf_undelay(xfs_buf_t *pb)
-{
- if (pb->pb_flags & PBF_DELWRI) {
- if (pb->pb_list.next != &pb->pb_list) {
- pagebuf_delwri_dequeue(pb);
- pagebuf_rele(pb);
- } else {
- pb->pb_flags &= ~PBF_DELWRI;
- }
- }
-}
-
-#define XFS_BUF_DELAYWRITE(x) ((x)->pb_flags |= PBF_DELWRI)
-#define XFS_BUF_UNDELAYWRITE(x) xfs_buf_undelay(x)
-#define XFS_BUF_ISDELAYWRITE(x) ((x)->pb_flags & PBF_DELWRI)
-
-#define XFS_BUF_ERROR(x,no) pagebuf_ioerror(x,no)
-#define XFS_BUF_GETERROR(x) pagebuf_geterror(x)
-#define XFS_BUF_ISERROR(x) (pagebuf_geterror(x)?1:0)
-
-#define XFS_BUF_DONE(x) ((x)->pb_flags &= ~(PBF_PARTIAL|PBF_NONE))
-#define XFS_BUF_UNDONE(x) ((x)->pb_flags |= PBF_PARTIAL|PBF_NONE)
-#define XFS_BUF_ISDONE(x) (!(PBF_NOT_DONE(x)))
-
-#define XFS_BUF_BUSY(x) ((x)->pb_flags |= PBF_FORCEIO)
-#define XFS_BUF_UNBUSY(x) ((x)->pb_flags &= ~PBF_FORCEIO)
-#define XFS_BUF_ISBUSY(x) (1)
-
-#define XFS_BUF_ASYNC(x) ((x)->pb_flags |= PBF_ASYNC)
-#define XFS_BUF_UNASYNC(x) ((x)->pb_flags &= ~PBF_ASYNC)
-#define XFS_BUF_ISASYNC(x) ((x)->pb_flags & PBF_ASYNC)
-
-#define XFS_BUF_FLUSH(x) ((x)->pb_flags |= PBF_FLUSH)
-#define XFS_BUF_UNFLUSH(x) ((x)->pb_flags &= ~PBF_FLUSH)
-#define XFS_BUF_ISFLUSH(x) ((x)->pb_flags & PBF_FLUSH)
-
-#define XFS_BUF_SHUT(x) printk("XFS_BUF_SHUT not implemented yet\n")
-#define XFS_BUF_UNSHUT(x) printk("XFS_BUF_UNSHUT not implemented yet\n")
-#define XFS_BUF_ISSHUT(x) (0)
-
-#define XFS_BUF_HOLD(x) pagebuf_hold(x)
-#define XFS_BUF_READ(x) ((x)->pb_flags |= PBF_READ)
-#define XFS_BUF_UNREAD(x) ((x)->pb_flags &= ~PBF_READ)
-#define XFS_BUF_ISREAD(x) ((x)->pb_flags & PBF_READ)
-
-#define XFS_BUF_WRITE(x) ((x)->pb_flags |= PBF_WRITE)
-#define XFS_BUF_UNWRITE(x) ((x)->pb_flags &= ~PBF_WRITE)
-#define XFS_BUF_ISWRITE(x) ((x)->pb_flags & PBF_WRITE)
-
-#define XFS_BUF_ISUNINITIAL(x) (0)
-#define XFS_BUF_UNUNINITIAL(x) (0)
-
-#define XFS_BUF_BP_ISMAPPED(bp) 1
-
-#define XFS_BUF_DATAIO(x) ((x)->pb_flags |= PBF_FS_DATAIOD)
-#define XFS_BUF_UNDATAIO(x) ((x)->pb_flags &= ~PBF_FS_DATAIOD)
-
-#define XFS_BUF_IODONE_FUNC(buf) (buf)->pb_iodone
-#define XFS_BUF_SET_IODONE_FUNC(buf, func) \
- (buf)->pb_iodone = (func)
-#define XFS_BUF_CLR_IODONE_FUNC(buf) \
- (buf)->pb_iodone = NULL
-#define XFS_BUF_SET_BDSTRAT_FUNC(buf, func) \
- (buf)->pb_strat = (func)
-#define XFS_BUF_CLR_BDSTRAT_FUNC(buf) \
- (buf)->pb_strat = NULL
-
-#define XFS_BUF_FSPRIVATE(buf, type) \
- ((type)(buf)->pb_fspriv)
-#define XFS_BUF_SET_FSPRIVATE(buf, value) \
- (buf)->pb_fspriv = (void *)(value)
-#define XFS_BUF_FSPRIVATE2(buf, type) \
- ((type)(buf)->pb_fspriv2)
-#define XFS_BUF_SET_FSPRIVATE2(buf, value) \
- (buf)->pb_fspriv2 = (void *)(value)
-#define XFS_BUF_FSPRIVATE3(buf, type) \
- ((type)(buf)->pb_fspriv3)
-#define XFS_BUF_SET_FSPRIVATE3(buf, value) \
- (buf)->pb_fspriv3 = (void *)(value)
-#define XFS_BUF_SET_START(buf)
-
-#define XFS_BUF_SET_BRELSE_FUNC(buf, value) \
- (buf)->pb_relse = (value)
-
-#define XFS_BUF_PTR(bp) (xfs_caddr_t)((bp)->pb_addr)
-
-extern inline xfs_caddr_t xfs_buf_offset(xfs_buf_t *bp, size_t offset)
-{
- if (bp->pb_flags & PBF_MAPPED)
- return XFS_BUF_PTR(bp) + offset;
- return (xfs_caddr_t) pagebuf_offset(bp, offset);
-}
-
-#define XFS_BUF_SET_PTR(bp, val, count) \
- pagebuf_associate_memory(bp, val, count)
-#define XFS_BUF_ADDR(bp) ((bp)->pb_bn)
-#define XFS_BUF_SET_ADDR(bp, blk) \
- ((bp)->pb_bn = (blk))
-#define XFS_BUF_OFFSET(bp) ((bp)->pb_file_offset)
-#define XFS_BUF_SET_OFFSET(bp, off) \
- ((bp)->pb_file_offset = (off))
-#define XFS_BUF_COUNT(bp) ((bp)->pb_count_desired)
-#define XFS_BUF_SET_COUNT(bp, cnt) \
- ((bp)->pb_count_desired = (cnt))
-#define XFS_BUF_SIZE(bp) ((bp)->pb_buffer_length)
-#define XFS_BUF_SET_SIZE(bp, cnt) \
- ((bp)->pb_buffer_length = (cnt))
-#define XFS_BUF_SET_VTYPE_REF(bp, type, ref)
-#define XFS_BUF_SET_VTYPE(bp, type)
-#define XFS_BUF_SET_REF(bp, ref)
-
-#define XFS_BUF_ISPINNED(bp) pagebuf_ispin(bp)
-
-#define XFS_BUF_VALUSEMA(bp) pagebuf_lock_value(bp)
-#define XFS_BUF_CPSEMA(bp) (pagebuf_cond_lock(bp) == 0)
-#define XFS_BUF_VSEMA(bp) pagebuf_unlock(bp)
-#define XFS_BUF_PSEMA(bp,x) pagebuf_lock(bp)
-#define XFS_BUF_V_IODONESEMA(bp) up(&bp->pb_iodonesema);
-
-/* setup the buffer target from a buftarg structure */
-#define XFS_BUF_SET_TARGET(bp, target) \
- (bp)->pb_target = (target)
-#define XFS_BUF_TARGET(bp) ((bp)->pb_target)
-#define XFS_BUFTARG_NAME(target) \
- pagebuf_target_name(target)
-
-#define XFS_BUF_SET_VTYPE_REF(bp, type, ref)
-#define XFS_BUF_SET_VTYPE(bp, type)
-#define XFS_BUF_SET_REF(bp, ref)
-
-#define xfs_buf_read(target, blkno, len, flags) \
- pagebuf_get((target), (blkno), (len), \
- PBF_LOCK | PBF_READ | PBF_MAPPED)
-#define xfs_buf_get(target, blkno, len, flags) \
- pagebuf_get((target), (blkno), (len), \
- PBF_LOCK | PBF_MAPPED)
-
-#define xfs_buf_read_flags(target, blkno, len, flags) \
- pagebuf_get((target), (blkno), (len), PBF_READ | (flags))
-#define xfs_buf_get_flags(target, blkno, len, flags) \
- pagebuf_get((target), (blkno), (len), (flags))
-
-static inline int xfs_bawrite(void *mp, xfs_buf_t *bp)
-{
- bp->pb_fspriv3 = mp;
- bp->pb_strat = xfs_bdstrat_cb;
- xfs_buf_undelay(bp);
- return pagebuf_iostart(bp, PBF_WRITE | PBF_ASYNC | _PBF_RUN_QUEUES);
-}
-
-static inline void xfs_buf_relse(xfs_buf_t *bp)
-{
- if (!bp->pb_relse)
- pagebuf_unlock(bp);
- pagebuf_rele(bp);
-}
-
-#define xfs_bpin(bp) pagebuf_pin(bp)
-#define xfs_bunpin(bp) pagebuf_unpin(bp)
-
-#define xfs_buftrace(id, bp) \
- pagebuf_trace(bp, id, NULL, (void *)__builtin_return_address(0))
-
-#define xfs_biodone(pb) \
- pagebuf_iodone(pb, (pb->pb_flags & PBF_FS_DATAIOD), 0)
-
-#define xfs_incore(buftarg,blkno,len,lockit) \
- pagebuf_find(buftarg, blkno ,len, lockit)
-
-
-#define xfs_biomove(pb, off, len, data, rw) \
- pagebuf_iomove((pb), (off), (len), (data), \
- ((rw) == XFS_B_WRITE) ? PBRW_WRITE : PBRW_READ)
-
-#define xfs_biozero(pb, off, len) \
- pagebuf_iomove((pb), (off), (len), NULL, PBRW_ZERO)
-
-
-static inline int XFS_bwrite(xfs_buf_t *pb)
-{
- int iowait = (pb->pb_flags & PBF_ASYNC) == 0;
- int error = 0;
-
- if (!iowait)
- pb->pb_flags |= _PBF_RUN_QUEUES;
-
- xfs_buf_undelay(pb);
- pagebuf_iostrategy(pb);
- if (iowait) {
- error = pagebuf_iowait(pb);
- xfs_buf_relse(pb);
- }
- return error;
-}
-
-#define XFS_bdwrite(pb) \
- pagebuf_iostart(pb, PBF_DELWRI | PBF_ASYNC)
-
-static inline int xfs_bdwrite(void *mp, xfs_buf_t *bp)
-{
- bp->pb_strat = xfs_bdstrat_cb;
- bp->pb_fspriv3 = mp;
-
- return pagebuf_iostart(bp, PBF_DELWRI | PBF_ASYNC);
-}
-
-#define XFS_bdstrat(bp) pagebuf_iorequest(bp)
-
-#define xfs_iowait(pb) pagebuf_iowait(pb)
-
-#define xfs_baread(target, rablkno, ralen) \
- pagebuf_readahead((target), (rablkno), (ralen), PBF_DONT_BLOCK)
-
-#define xfs_buf_get_empty(len, target) pagebuf_get_empty((len), (target))
-#define xfs_buf_get_noaddr(len, target) pagebuf_get_no_daddr((len), (target))
-#define xfs_buf_free(bp) pagebuf_free(bp)
-
-
-/*
- * Handling of buftargs.
- */
-
-extern xfs_buftarg_t *xfs_alloc_buftarg(struct block_device *);
-extern void xfs_free_buftarg(xfs_buftarg_t *, int);
-extern void xfs_setsize_buftarg(xfs_buftarg_t *, unsigned int, unsigned int);
-extern void xfs_incore_relse(xfs_buftarg_t *, int, int);
-extern int xfs_flush_buftarg(xfs_buftarg_t *, int);
-
-#define xfs_getsize_buftarg(buftarg) \
- block_size((buftarg)->pbr_bdev)
-#define xfs_readonly_buftarg(buftarg) \
- bdev_read_only((buftarg)->pbr_bdev)
-#define xfs_binval(buftarg) \
- xfs_flush_buftarg(buftarg, 1)
-#define XFS_bflush(buftarg) \
- xfs_flush_buftarg(buftarg, 1)
-
-#endif /* __XFS_BUF_H__ */
+++ /dev/null
-/*
- * Copyright (c) 2000-2002 Silicon Graphics, Inc. All Rights Reserved.
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of version 2 of the GNU General Public License as
- * published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it would be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
- *
- * Further, this software is distributed without any warranty that it is
- * free of the rightful claim of any third person regarding infringement
- * or the like. Any license provided herein, whether implied or
- * otherwise, applies only to this software file. Patent licenses, if
- * any, provided herein do not apply to combinations of this program with
- * other software, or any other product whatsoever.
- *
- * You should have received a copy of the GNU General Public License along
- * with this program; if not, write the Free Software Foundation, Inc., 59
- * Temple Place - Suite 330, Boston MA 02111-1307, USA.
- *
- * Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy,
- * Mountain View, CA 94043, or:
- *
- * http://www.sgi.com
- *
- * For further information regarding this notice, see:
- *
- * http://oss.sgi.com/projects/GenInfo/SGIGPLNoticeExplan/
- */
-#ifndef __XFS_CRED_H__
-#define __XFS_CRED_H__
-
-/*
- * Credentials
- */
-typedef struct cred {
- /* EMPTY */
-} cred_t;
-
-extern struct cred *sys_cred;
-
-/* this is a hack.. (assums sys_cred is the only cred_t in the system) */
-static __inline int capable_cred(cred_t *cr, int cid)
-{
- return (cr == sys_cred) ? 1 : capable(cid);
-}
-
-#endif /* __XFS_CRED_H__ */
+++ /dev/null
-/*
- * Copyright (c) 2000-2003 Silicon Graphics, Inc. All Rights Reserved.
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of version 2 of the GNU General Public License as
- * published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it would be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
- *
- * Further, this software is distributed without any warranty that it is
- * free of the rightful claim of any third person regarding infringement
- * or the like. Any license provided herein, whether implied or
- * otherwise, applies only to this software file. Patent licenses, if
- * any, provided herein do not apply to combinations of this program with
- * other software, or any other product whatsoever.
- *
- * You should have received a copy of the GNU General Public License along
- * with this program; if not, write the Free Software Foundation, Inc., 59
- * Temple Place - Suite 330, Boston MA 02111-1307, USA.
- *
- * Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy,
- * Mountain View, CA 94043, or:
- *
- * http://www.sgi.com
- *
- * For further information regarding this notice, see:
- *
- * http://oss.sgi.com/projects/GenInfo/SGIGPLNoticeExplan/
- */
-
-#include "xfs.h"
-#include "xfs_inum.h"
-#include "xfs_log.h"
-#include "xfs_sb.h"
-#include "xfs_dir.h"
-#include "xfs_dir2.h"
-#include "xfs_trans.h"
-#include "xfs_dmapi.h"
-#include "xfs_mount.h"
-#include "xfs_bmap_btree.h"
-#include "xfs_alloc_btree.h"
-#include "xfs_ialloc_btree.h"
-#include "xfs_alloc.h"
-#include "xfs_btree.h"
-#include "xfs_attr_sf.h"
-#include "xfs_dir_sf.h"
-#include "xfs_dir2_sf.h"
-#include "xfs_dinode.h"
-#include "xfs_inode.h"
-#include "xfs_error.h"
-#include "xfs_rw.h"
-
-#include <linux/dcache.h>
-
-static struct vm_operations_struct linvfs_file_vm_ops;
-
-
-STATIC inline ssize_t
-__linvfs_read(
- struct kiocb *iocb,
- char __user *buf,
- int ioflags,
- size_t count,
- loff_t pos)
-{
- struct iovec iov = {buf, count};
- struct file *file = iocb->ki_filp;
- vnode_t *vp = LINVFS_GET_VP(file->f_dentry->d_inode);
- ssize_t rval;
-
- BUG_ON(iocb->ki_pos != pos);
-
- if (unlikely(file->f_flags & O_DIRECT))
- ioflags |= IO_ISDIRECT;
- VOP_READ(vp, iocb, &iov, 1, &iocb->ki_pos, ioflags, NULL, rval);
- return rval;
-}
-
-
-STATIC ssize_t
-linvfs_read(
- struct kiocb *iocb,
- char __user *buf,
- size_t count,
- loff_t pos)
-{
- return __linvfs_read(iocb, buf, 0, count, pos);
-}
-
-STATIC ssize_t
-linvfs_read_invis(
- struct kiocb *iocb,
- char __user *buf,
- size_t count,
- loff_t pos)
-{
- return __linvfs_read(iocb, buf, IO_INVIS, count, pos);
-}
-
-
-STATIC inline ssize_t
-__linvfs_write(
- struct kiocb *iocb,
- const char *buf,
- int ioflags,
- size_t count,
- loff_t pos)
-{
- struct iovec iov = {(void *)buf, count};
- struct file *file = iocb->ki_filp;
- struct inode *inode = file->f_mapping->host;
- vnode_t *vp = LINVFS_GET_VP(inode);
- ssize_t rval;
-
- BUG_ON(iocb->ki_pos != pos);
- if (unlikely(file->f_flags & O_DIRECT)) {
- ioflags |= IO_ISDIRECT;
- VOP_WRITE(vp, iocb, &iov, 1, &iocb->ki_pos,
- ioflags, NULL, rval);
- } else {
- down(&inode->i_sem);
- VOP_WRITE(vp, iocb, &iov, 1, &iocb->ki_pos,
- ioflags, NULL, rval);
- up(&inode->i_sem);
- }
-
- return rval;
-}
-
-
-STATIC ssize_t
-linvfs_write(
- struct kiocb *iocb,
- const char __user *buf,
- size_t count,
- loff_t pos)
-{
- return __linvfs_write(iocb, buf, 0, count, pos);
-}
-
-STATIC ssize_t
-linvfs_write_invis(
- struct kiocb *iocb,
- const char __user *buf,
- size_t count,
- loff_t pos)
-{
- return __linvfs_write(iocb, buf, IO_INVIS, count, pos);
-}
-
-
-STATIC inline ssize_t
-__linvfs_readv(
- struct file *file,
- const struct iovec *iov,
- int ioflags,
- unsigned long nr_segs,
- loff_t *ppos)
-{
- struct inode *inode = file->f_mapping->host;
- vnode_t *vp = LINVFS_GET_VP(inode);
- struct kiocb kiocb;
- ssize_t rval;
-
- init_sync_kiocb(&kiocb, file);
- kiocb.ki_pos = *ppos;
-
- if (unlikely(file->f_flags & O_DIRECT))
- ioflags |= IO_ISDIRECT;
- VOP_READ(vp, &kiocb, iov, nr_segs, &kiocb.ki_pos, ioflags, NULL, rval);
- if (rval == -EIOCBQUEUED)
- rval = wait_on_sync_kiocb(&kiocb);
-
- *ppos = kiocb.ki_pos;
- return rval;
-}
-
-STATIC ssize_t
-linvfs_readv(
- struct file *file,
- const struct iovec *iov,
- unsigned long nr_segs,
- loff_t *ppos)
-{
- return __linvfs_readv(file, iov, 0, nr_segs, ppos);
-}
-
-STATIC ssize_t
-linvfs_readv_invis(
- struct file *file,
- const struct iovec *iov,
- unsigned long nr_segs,
- loff_t *ppos)
-{
- return __linvfs_readv(file, iov, IO_INVIS, nr_segs, ppos);
-}
-
-
-STATIC inline ssize_t
-__linvfs_writev(
- struct file *file,
- const struct iovec *iov,
- int ioflags,
- unsigned long nr_segs,
- loff_t *ppos)
-{
- struct inode *inode = file->f_mapping->host;
- vnode_t *vp = LINVFS_GET_VP(inode);
- struct kiocb kiocb;
- ssize_t rval;
-
- init_sync_kiocb(&kiocb, file);
- kiocb.ki_pos = *ppos;
- if (unlikely(file->f_flags & O_DIRECT)) {
- ioflags |= IO_ISDIRECT;
- VOP_WRITE(vp, &kiocb, iov, nr_segs, &kiocb.ki_pos,
- ioflags, NULL, rval);
- } else {
- down(&inode->i_sem);
- VOP_WRITE(vp, &kiocb, iov, nr_segs, &kiocb.ki_pos,
- ioflags, NULL, rval);
- up(&inode->i_sem);
- }
-
- if (rval == -EIOCBQUEUED)
- rval = wait_on_sync_kiocb(&kiocb);
-
- *ppos = kiocb.ki_pos;
- return rval;
-}
-
-
-STATIC ssize_t
-linvfs_writev(
- struct file *file,
- const struct iovec *iov,
- unsigned long nr_segs,
- loff_t *ppos)
-{
- return __linvfs_writev(file, iov, 0, nr_segs, ppos);
-}
-
-STATIC ssize_t
-linvfs_writev_invis(
- struct file *file,
- const struct iovec *iov,
- unsigned long nr_segs,
- loff_t *ppos)
-{
- return __linvfs_writev(file, iov, IO_INVIS, nr_segs, ppos);
-}
-
-STATIC ssize_t
-linvfs_sendfile(
- struct file *filp,
- loff_t *ppos,
- size_t count,
- read_actor_t actor,
- void *target)
-{
- vnode_t *vp = LINVFS_GET_VP(filp->f_dentry->d_inode);
- int error;
-
- VOP_SENDFILE(vp, filp, ppos, 0, count, actor, target, NULL, error);
- return error;
-}
-
-
-STATIC int
-linvfs_open(
- struct inode *inode,
- struct file *filp)
-{
- vnode_t *vp = LINVFS_GET_VP(inode);
- int error;
-
- if (!(filp->f_flags & O_LARGEFILE) && i_size_read(inode) > MAX_NON_LFS)
- return -EFBIG;
-
- ASSERT(vp);
- VOP_OPEN(vp, NULL, error);
- return -error;
-}
-
-
-STATIC int
-linvfs_release(
- struct inode *inode,
- struct file *filp)
-{
- vnode_t *vp = LINVFS_GET_VP(inode);
- int error = 0;
-
- if (vp)
- VOP_RELEASE(vp, error);
- return -error;
-}
-
-
-STATIC int
-linvfs_fsync(
- struct file *filp,
- struct dentry *dentry,
- int datasync)
-{
- struct inode *inode = dentry->d_inode;
- vnode_t *vp = LINVFS_GET_VP(inode);
- int error;
- int flags = FSYNC_WAIT;
-
- if (datasync)
- flags |= FSYNC_DATA;
-
- ASSERT(vp);
- VOP_FSYNC(vp, flags, NULL, (xfs_off_t)0, (xfs_off_t)-1, error);
- return -error;
-}
-
-/*
- * linvfs_readdir maps to VOP_READDIR().
- * We need to build a uio, cred, ...
- */
-
-#define nextdp(dp) ((struct xfs_dirent *)((char *)(dp) + (dp)->d_reclen))
-
-STATIC int
-linvfs_readdir(
- struct file *filp,
- void *dirent,
- filldir_t filldir)
-{
- int error = 0;
- vnode_t *vp;
- uio_t uio;
- iovec_t iov;
- int eof = 0;
- caddr_t read_buf;
- int namelen, size = 0;
- size_t rlen = PAGE_CACHE_SIZE;
- xfs_off_t start_offset, curr_offset;
- xfs_dirent_t *dbp = NULL;
-
- vp = LINVFS_GET_VP(filp->f_dentry->d_inode);
- ASSERT(vp);
-
- /* Try fairly hard to get memory */
- do {
- if ((read_buf = (caddr_t)kmalloc(rlen, GFP_KERNEL)))
- break;
- rlen >>= 1;
- } while (rlen >= 1024);
-
- if (read_buf == NULL)
- return -ENOMEM;
-
- uio.uio_iov = &iov;
- uio.uio_segflg = UIO_SYSSPACE;
- curr_offset = filp->f_pos;
- if (filp->f_pos != 0x7fffffff)
- uio.uio_offset = filp->f_pos;
- else
- uio.uio_offset = 0xffffffff;
-
- while (!eof) {
- uio.uio_resid = iov.iov_len = rlen;
- iov.iov_base = read_buf;
- uio.uio_iovcnt = 1;
-
- start_offset = uio.uio_offset;
-
- VOP_READDIR(vp, &uio, NULL, &eof, error);
- if ((uio.uio_offset == start_offset) || error) {
- size = 0;
- break;
- }
-
- size = rlen - uio.uio_resid;
- dbp = (xfs_dirent_t *)read_buf;
- while (size > 0) {
- namelen = strlen(dbp->d_name);
-
- if (filldir(dirent, dbp->d_name, namelen,
- (loff_t) curr_offset & 0x7fffffff,
- (ino_t) dbp->d_ino,
- DT_UNKNOWN)) {
- goto done;
- }
- size -= dbp->d_reclen;
- curr_offset = (loff_t)dbp->d_off /* & 0x7fffffff */;
- dbp = nextdp(dbp);
- }
- }
-done:
- if (!error) {
- if (size == 0)
- filp->f_pos = uio.uio_offset & 0x7fffffff;
- else if (dbp)
- filp->f_pos = curr_offset;
- }
-
- kfree(read_buf);
- return -error;
-}
-
-
-STATIC int
-linvfs_file_mmap(
- struct file *filp,
- struct vm_area_struct *vma)
-{
- struct inode *ip = filp->f_dentry->d_inode;
- vnode_t *vp = LINVFS_GET_VP(ip);
- vattr_t va = { .va_mask = XFS_AT_UPDATIME };
- int error;
-
- if ((vp->v_type == VREG) && (vp->v_vfsp->vfs_flag & VFS_DMI)) {
- xfs_mount_t *mp = XFS_VFSTOM(vp->v_vfsp);
-
- error = -XFS_SEND_MMAP(mp, vma, 0);
- if (error)
- return error;
- }
-
- vma->vm_ops = &linvfs_file_vm_ops;
-
- VOP_SETATTR(vp, &va, XFS_AT_UPDATIME, NULL, error);
- return 0;
-}
-
-
-STATIC int
-linvfs_ioctl(
- struct inode *inode,
- struct file *filp,
- unsigned int cmd,
- unsigned long arg)
-{
- int error;
- vnode_t *vp = LINVFS_GET_VP(inode);
-
- ASSERT(vp);
- VOP_IOCTL(vp, inode, filp, 0, cmd, arg, error);
- VMODIFY(vp);
-
- /* NOTE: some of the ioctl's return positive #'s as a
- * byte count indicating success, such as
- * readlink_by_handle. So we don't "sign flip"
- * like most other routines. This means true
- * errors need to be returned as a negative value.
- */
- return error;
-}
-
-STATIC int
-linvfs_ioctl_invis(
- struct inode *inode,
- struct file *filp,
- unsigned int cmd,
- unsigned long arg)
-{
- int error;
- vnode_t *vp = LINVFS_GET_VP(inode);
-
- ASSERT(vp);
- VOP_IOCTL(vp, inode, filp, IO_INVIS, cmd, arg, error);
- VMODIFY(vp);
-
- /* NOTE: some of the ioctl's return positive #'s as a
- * byte count indicating success, such as
- * readlink_by_handle. So we don't "sign flip"
- * like most other routines. This means true
- * errors need to be returned as a negative value.
- */
- return error;
-}
-
-#ifdef HAVE_VMOP_MPROTECT
-STATIC int
-linvfs_mprotect(
- struct vm_area_struct *vma,
- unsigned int newflags)
-{
- vnode_t *vp = LINVFS_GET_VP(vma->vm_file->f_dentry->d_inode);
- int error = 0;
-
- if ((vp->v_type == VREG) && (vp->v_vfsp->vfs_flag & VFS_DMI)) {
- if ((vma->vm_flags & VM_MAYSHARE) &&
- (newflags & VM_WRITE) && !(vma->vm_flags & VM_WRITE)) {
- xfs_mount_t *mp = XFS_VFSTOM(vp->v_vfsp);
-
- error = XFS_SEND_MMAP(mp, vma, VM_WRITE);
- }
- }
- return error;
-}
-#endif /* HAVE_VMOP_MPROTECT */
-
-
-struct file_operations linvfs_file_operations = {
- .llseek = generic_file_llseek,
- .read = do_sync_read,
- .write = do_sync_write,
- .readv = linvfs_readv,
- .writev = linvfs_writev,
- .aio_read = linvfs_read,
- .aio_write = linvfs_write,
- .sendfile = linvfs_sendfile,
- .ioctl = linvfs_ioctl,
- .mmap = linvfs_file_mmap,
- .open = linvfs_open,
- .release = linvfs_release,
- .fsync = linvfs_fsync,
-};
-
-struct file_operations linvfs_invis_file_operations = {
- .llseek = generic_file_llseek,
- .read = do_sync_read,
- .write = do_sync_write,
- .readv = linvfs_readv_invis,
- .writev = linvfs_writev_invis,
- .aio_read = linvfs_read_invis,
- .aio_write = linvfs_write_invis,
- .sendfile = linvfs_sendfile,
- .ioctl = linvfs_ioctl_invis,
- .mmap = linvfs_file_mmap,
- .open = linvfs_open,
- .release = linvfs_release,
- .fsync = linvfs_fsync,
-};
-
-
-struct file_operations linvfs_dir_operations = {
- .read = generic_read_dir,
- .readdir = linvfs_readdir,
- .ioctl = linvfs_ioctl,
- .fsync = linvfs_fsync,
-};
-
-static struct vm_operations_struct linvfs_file_vm_ops = {
- .nopage = filemap_nopage,
-#ifdef HAVE_VMOP_MPROTECT
- .mprotect = linvfs_mprotect,
-#endif
-};
+++ /dev/null
-/*
- * Copyright (c) 2000-2002 Silicon Graphics, Inc. All Rights Reserved.
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of version 2 of the GNU General Public License as
- * published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it would be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
- *
- * Further, this software is distributed without any warranty that it is
- * free of the rightful claim of any third person regarding infringement
- * or the like. Any license provided herein, whether implied or
- * otherwise, applies only to this software file. Patent licenses, if
- * any, provided herein do not apply to combinations of this program with
- * other software, or any other product whatsoever.
- *
- * You should have received a copy of the GNU General Public License along
- * with this program; if not, write the Free Software Foundation, Inc., 59
- * Temple Place - Suite 330, Boston MA 02111-1307, USA.
- *
- * Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy,
- * Mountain View, CA 94043, or:
- *
- * http://www.sgi.com
- *
- * For further information regarding this notice, see:
- *
- * http://oss.sgi.com/projects/GenInfo/SGIGPLNoticeExplan/
- */
-
-#include "xfs.h"
-
-/*
- * Stub for no-op vnode operations that return error status.
- */
-int
-fs_noerr()
-{
- return 0;
-}
-
-/*
- * Operation unsupported under this file system.
- */
-int
-fs_nosys()
-{
- return ENOSYS;
-}
-
-/*
- * Stub for inactive, strategy, and read/write lock/unlock. Does nothing.
- */
-/* ARGSUSED */
-void
-fs_noval()
-{
-}
-
-/*
- * vnode pcache layer for vnode_tosspages.
- * 'last' parameter unused but left in for IRIX compatibility
- */
-void
-fs_tosspages(
- bhv_desc_t *bdp,
- xfs_off_t first,
- xfs_off_t last,
- int fiopt)
-{
- vnode_t *vp = BHV_TO_VNODE(bdp);
- struct inode *ip = LINVFS_GET_IP(vp);
-
- if (VN_CACHED(vp))
- truncate_inode_pages(ip->i_mapping, first);
-}
-
-
-/*
- * vnode pcache layer for vnode_flushinval_pages.
- * 'last' parameter unused but left in for IRIX compatibility
- */
-void
-fs_flushinval_pages(
- bhv_desc_t *bdp,
- xfs_off_t first,
- xfs_off_t last,
- int fiopt)
-{
- vnode_t *vp = BHV_TO_VNODE(bdp);
- struct inode *ip = LINVFS_GET_IP(vp);
-
- if (VN_CACHED(vp)) {
- filemap_fdatawrite(ip->i_mapping);
- filemap_fdatawait(ip->i_mapping);
-
- truncate_inode_pages(ip->i_mapping, first);
- }
-}
-
-/*
- * vnode pcache layer for vnode_flush_pages.
- * 'last' parameter unused but left in for IRIX compatibility
- */
-int
-fs_flush_pages(
- bhv_desc_t *bdp,
- xfs_off_t first,
- xfs_off_t last,
- uint64_t flags,
- int fiopt)
-{
- vnode_t *vp = BHV_TO_VNODE(bdp);
- struct inode *ip = LINVFS_GET_IP(vp);
-
- if (VN_CACHED(vp)) {
- filemap_fdatawrite(ip->i_mapping);
- filemap_fdatawait(ip->i_mapping);
- }
-
- return 0;
-}
+++ /dev/null
-/*
- * Copyright (c) 2000, 2002 Silicon Graphics, Inc. All Rights Reserved.
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of version 2 of the GNU General Public License as
- * published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it would be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
- *
- * Further, this software is distributed without any warranty that it is
- * free of the rightful claim of any third person regarding infringement
- * or the like. Any license provided herein, whether implied or
- * otherwise, applies only to this software file. Patent licenses, if
- * any, provided herein do not apply to combinations of this program with
- * other software, or any other product whatsoever.
- *
- * You should have received a copy of the GNU General Public License along
- * with this program; if not, write the Free Software Foundation, Inc., 59
- * Temple Place - Suite 330, Boston MA 02111-1307, USA.
- *
- * Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy,
- * Mountain View, CA 94043, or:
- *
- * http://www.sgi.com
- *
- * For further information regarding this notice, see:
- *
- * http://oss.sgi.com/projects/GenInfo/SGIGPLNoticeExplan/
- */
-#ifndef __XFS_SUBR_H__
-#define __XFS_SUBR_H__
-
-/*
- * Utilities shared among file system implementations.
- */
-
-struct cred;
-
-extern int fs_noerr(void);
-extern int fs_nosys(void);
-extern int fs_nodev(void);
-extern void fs_noval(void);
-extern void fs_tosspages(bhv_desc_t *, xfs_off_t, xfs_off_t, int);
-extern void fs_flushinval_pages(bhv_desc_t *, xfs_off_t, xfs_off_t, int);
-extern int fs_flush_pages(bhv_desc_t *, xfs_off_t, xfs_off_t, uint64_t, int);
-
-#endif /* __XFS_FS_SUBR_H__ */
+++ /dev/null
-/*
- * Copyright (c) 2000-2004 Silicon Graphics, Inc. All Rights Reserved.
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of version 2 of the GNU General Public License as
- * published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it would be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
- *
- * Further, this software is distributed without any warranty that it is
- * free of the rightful claim of any third person regarding infringement
- * or the like. Any license provided herein, whether implied or
- * otherwise, applies only to this software file. Patent licenses, if
- * any, provided herein do not apply to combinations of this program with
- * other software, or any other product whatsoever.
- *
- * You should have received a copy of the GNU General Public License along
- * with this program; if not, write the Free Software Foundation, Inc., 59
- * Temple Place - Suite 330, Boston MA 02111-1307, USA.
- *
- * Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy,
- * Mountain View, CA 94043, or:
- *
- * http://www.sgi.com
- *
- * For further information regarding this notice, see:
- *
- * http://oss.sgi.com/projects/GenInfo/SGIGPLNoticeExplan/
- */
-
-/*
- * This file contains globals needed by XFS that were normally defined
- * somewhere else in IRIX.
- */
-
-#include "xfs.h"
-#include "xfs_cred.h"
-#include "xfs_sysctl.h"
-
-/*
- * System memory size - used to scale certain data structures in XFS.
- */
-unsigned long xfs_physmem;
-
-/*
- * Tunable XFS parameters. xfs_params is required even when CONFIG_SYSCTL=n,
- * other XFS code uses these values.
- */
-
-xfs_param_t xfs_params = {
- /* MIN DFLT MAX */
- .restrict_chown = { 0, 1, 1 },
- .sgid_inherit = { 0, 0, 1 },
- .symlink_mode = { 0, 0, 1 },
- .panic_mask = { 0, 0, 127 },
- .error_level = { 0, 3, 11 },
- .sync_interval = { USER_HZ, 30*USER_HZ, 7200*USER_HZ },
- .stats_clear = { 0, 0, 1 },
- .inherit_sync = { 0, 1, 1 },
- .inherit_nodump = { 0, 1, 1 },
- .inherit_noatim = { 0, 1, 1 },
- .flush_interval = { USER_HZ/2, USER_HZ, 30*USER_HZ },
- .age_buffer = { 1*USER_HZ, 15*USER_HZ, 7200*USER_HZ },
-};
-
-/*
- * Global system credential structure.
- */
-cred_t sys_cred_val, *sys_cred = &sys_cred_val;
-
+++ /dev/null
-/*
- * Copyright (c) 2000-2003 Silicon Graphics, Inc. All Rights Reserved.
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of version 2 of the GNU General Public License as
- * published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it would be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
- *
- * Further, this software is distributed without any warranty that it is
- * free of the rightful claim of any third person regarding infringement
- * or the like. Any license provided herein, whether implied or
- * otherwise, applies only to this software file. Patent licenses, if
- * any, provided herein do not apply to combinations of this program with
- * other software, or any other product whatsoever.
- *
- * You should have received a copy of the GNU General Public License along
- * with this program; if not, write the Free Software Foundation, Inc., 59
- * Temple Place - Suite 330, Boston MA 02111-1307, USA.
- *
- * Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy,
- * Mountain View, CA 94043, or:
- *
- * http://www.sgi.com
- *
- * For further information regarding this notice, see:
- *
- * http://oss.sgi.com/projects/GenInfo/SGIGPLNoticeExplan/
- */
-#ifndef __XFS_GLOBALS_H__
-#define __XFS_GLOBALS_H__
-
-/*
- * This file declares globals needed by XFS that were normally defined
- * somewhere else in IRIX.
- */
-
-extern uint64_t xfs_panic_mask; /* set to cause more panics */
-extern unsigned long xfs_physmem;
-extern struct cred *sys_cred;
-
-#endif /* __XFS_GLOBALS_H__ */
+++ /dev/null
-/*
- * Copyright (c) 2000-2003 Silicon Graphics, Inc. All Rights Reserved.
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of version 2 of the GNU General Public License as
- * published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it would be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
- *
- * Further, this software is distributed without any warranty that it is
- * free of the rightful claim of any third person regarding infringement
- * or the like. Any license provided herein, whether implied or
- * otherwise, applies only to this software file. Patent licenses, if
- * any, provided herein do not apply to combinations of this program with
- * other software, or any other product whatsoever.
- *
- * You should have received a copy of the GNU General Public License along
- * with this program; if not, write the Free Software Foundation, Inc., 59
- * Temple Place - Suite 330, Boston MA 02111-1307, USA.
- *
- * Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy,
- * Mountain View, CA 94043, or:
- *
- * http://www.sgi.com
- *
- * For further information regarding this notice, see:
- *
- * http://oss.sgi.com/projects/GenInfo/SGIGPLNoticeExplan/
- */
-
-#include "xfs.h"
-
-#include "xfs_fs.h"
-#include "xfs_inum.h"
-#include "xfs_log.h"
-#include "xfs_trans.h"
-#include "xfs_sb.h"
-#include "xfs_dir.h"
-#include "xfs_dir2.h"
-#include "xfs_alloc.h"
-#include "xfs_dmapi.h"
-#include "xfs_mount.h"
-#include "xfs_alloc_btree.h"
-#include "xfs_bmap_btree.h"
-#include "xfs_ialloc_btree.h"
-#include "xfs_btree.h"
-#include "xfs_ialloc.h"
-#include "xfs_attr_sf.h"
-#include "xfs_dir_sf.h"
-#include "xfs_dir2_sf.h"
-#include "xfs_dinode.h"
-#include "xfs_inode.h"
-#include "xfs_bmap.h"
-#include "xfs_bit.h"
-#include "xfs_rtalloc.h"
-#include "xfs_error.h"
-#include "xfs_itable.h"
-#include "xfs_rw.h"
-#include "xfs_acl.h"
-#include "xfs_cap.h"
-#include "xfs_mac.h"
-#include "xfs_attr.h"
-#include "xfs_buf_item.h"
-#include "xfs_utils.h"
-#include "xfs_dfrag.h"
-#include "xfs_fsops.h"
-
-#include <linux/dcache.h>
-#include <linux/mount.h>
-#include <linux/namei.h>
-#include <linux/pagemap.h>
-
-/*
- * ioctl commands that are used by Linux filesystems
- */
-#define XFS_IOC_GETXFLAGS _IOR('f', 1, long)
-#define XFS_IOC_SETXFLAGS _IOW('f', 2, long)
-#define XFS_IOC_GETVERSION _IOR('v', 1, long)
-
-
-/*
- * xfs_find_handle maps from userspace xfs_fsop_handlereq structure to
- * a file or fs handle.
- *
- * XFS_IOC_PATH_TO_FSHANDLE
- * returns fs handle for a mount point or path within that mount point
- * XFS_IOC_FD_TO_HANDLE
- * returns full handle for a FD opened in user space
- * XFS_IOC_PATH_TO_HANDLE
- * returns full handle for a path
- */
-STATIC int
-xfs_find_handle(
- unsigned int cmd,
- unsigned long arg)
-{
- int hsize;
- xfs_handle_t handle;
- xfs_fsop_handlereq_t hreq;
- struct inode *inode;
- struct vnode *vp;
-
- if (copy_from_user(&hreq, (xfs_fsop_handlereq_t *)arg, sizeof(hreq)))
- return -XFS_ERROR(EFAULT);
-
- memset((char *)&handle, 0, sizeof(handle));
-
- switch (cmd) {
- case XFS_IOC_PATH_TO_FSHANDLE:
- case XFS_IOC_PATH_TO_HANDLE: {
- struct nameidata nd;
- int error;
-
- error = user_path_walk_link(hreq.path, &nd);
- if (error)
- return error;
-
- ASSERT(nd.dentry);
- ASSERT(nd.dentry->d_inode);
- inode = igrab(nd.dentry->d_inode);
- path_release(&nd);
- break;
- }
-
- case XFS_IOC_FD_TO_HANDLE: {
- struct file *file;
-
- file = fget(hreq.fd);
- if (!file)
- return -EBADF;
-
- ASSERT(file->f_dentry);
- ASSERT(file->f_dentry->d_inode);
- inode = igrab(file->f_dentry->d_inode);
- fput(file);
- break;
- }
-
- default:
- ASSERT(0);
- return -XFS_ERROR(EINVAL);
- }
-
- if (inode->i_sb->s_magic != XFS_SB_MAGIC) {
- /* we're not in XFS anymore, Toto */
- iput(inode);
- return -XFS_ERROR(EINVAL);
- }
-
- /* we need the vnode */
- vp = LINVFS_GET_VP(inode);
- if (vp->v_type != VREG && vp->v_type != VDIR && vp->v_type != VLNK) {
- iput(inode);
- return -XFS_ERROR(EBADF);
- }
-
- /* now we can grab the fsid */
- memcpy(&handle.ha_fsid, vp->v_vfsp->vfs_altfsid, sizeof(xfs_fsid_t));
- hsize = sizeof(xfs_fsid_t);
-
- if (cmd != XFS_IOC_PATH_TO_FSHANDLE) {
- xfs_inode_t *ip;
- bhv_desc_t *bhv;
- int lock_mode;
-
- /* need to get access to the xfs_inode to read the generation */
- bhv = vn_bhv_lookup_unlocked(VN_BHV_HEAD(vp), &xfs_vnodeops);
- ASSERT(bhv);
- ip = XFS_BHVTOI(bhv);
- ASSERT(ip);
- lock_mode = xfs_ilock_map_shared(ip);
-
- /* fill in fid section of handle from inode */
- handle.ha_fid.xfs_fid_len = sizeof(xfs_fid_t) -
- sizeof(handle.ha_fid.xfs_fid_len);
- handle.ha_fid.xfs_fid_pad = 0;
- handle.ha_fid.xfs_fid_gen = ip->i_d.di_gen;
- handle.ha_fid.xfs_fid_ino = ip->i_ino;
-
- xfs_iunlock_map_shared(ip, lock_mode);
-
- hsize = XFS_HSIZE(handle);
- }
-
- /* now copy our handle into the user buffer & write out the size */
- if (copy_to_user((xfs_handle_t *)hreq.ohandle, &handle, hsize) ||
- copy_to_user(hreq.ohandlen, &hsize, sizeof(__s32))) {
- iput(inode);
- return -XFS_ERROR(EFAULT);
- }
-
- iput(inode);
- return 0;
-}
-
-
-/*
- * Convert userspace handle data into vnode (and inode).
- * We [ab]use the fact that all the fsop_handlereq ioctl calls
- * have a data structure argument whose first component is always
- * a xfs_fsop_handlereq_t, so we can cast to and from this type.
- * This allows us to optimise the copy_from_user calls and gives
- * a handy, shared routine.
- *
- * If no error, caller must always VN_RELE the returned vp.
- */
-STATIC int
-xfs_vget_fsop_handlereq(
- xfs_mount_t *mp,
- struct inode *parinode, /* parent inode pointer */
- int cap, /* capability level for op */
- unsigned long arg, /* userspace data pointer */
- unsigned long size, /* size of expected struct */
- /* output arguments */
- xfs_fsop_handlereq_t *hreq,
- vnode_t **vp,
- struct inode **inode)
-{
- void *hanp;
- size_t hlen;
- xfs_fid_t *xfid;
- xfs_handle_t *handlep;
- xfs_handle_t handle;
- xfs_inode_t *ip;
- struct inode *inodep;
- vnode_t *vpp;
- xfs_ino_t ino;
- __u32 igen;
- int error;
-
- if (!capable(cap))
- return XFS_ERROR(EPERM);
-
- /*
- * Only allow handle opens under a directory.
- */
- if (!S_ISDIR(parinode->i_mode))
- return XFS_ERROR(ENOTDIR);
-
- /*
- * Copy the handle down from the user and validate
- * that it looks to be in the correct format.
- */
- if (copy_from_user(hreq, (struct xfs_fsop_handlereq *)arg, size))
- return XFS_ERROR(EFAULT);
-
- hanp = hreq->ihandle;
- hlen = hreq->ihandlen;
- handlep = &handle;
-
- if (hlen < sizeof(handlep->ha_fsid) || hlen > sizeof(*handlep))
- return XFS_ERROR(EINVAL);
- if (copy_from_user(handlep, hanp, hlen))
- return XFS_ERROR(EFAULT);
- if (hlen < sizeof(*handlep))
- memset(((char *)handlep) + hlen, 0, sizeof(*handlep) - hlen);
- if (hlen > sizeof(handlep->ha_fsid)) {
- if (handlep->ha_fid.xfs_fid_len !=
- (hlen - sizeof(handlep->ha_fsid)
- - sizeof(handlep->ha_fid.xfs_fid_len))
- || handlep->ha_fid.xfs_fid_pad)
- return XFS_ERROR(EINVAL);
- }
-
- /*
- * Crack the handle, obtain the inode # & generation #
- */
- xfid = (struct xfs_fid *)&handlep->ha_fid;
- if (xfid->xfs_fid_len == sizeof(*xfid) - sizeof(xfid->xfs_fid_len)) {
- ino = xfid->xfs_fid_ino;
- igen = xfid->xfs_fid_gen;
- } else {
- return XFS_ERROR(EINVAL);
- }
-
- /*
- * Get the XFS inode, building a vnode to go with it.
- */
- error = xfs_iget(mp, NULL, ino, XFS_ILOCK_SHARED, &ip, 0);
- if (error)
- return error;
- if (ip == NULL)
- return XFS_ERROR(EIO);
- if (ip->i_d.di_mode == 0 || ip->i_d.di_gen != igen) {
- xfs_iput_new(ip, XFS_ILOCK_SHARED);
- return XFS_ERROR(ENOENT);
- }
-
- vpp = XFS_ITOV(ip);
- inodep = LINVFS_GET_IP(vpp);
- xfs_iunlock(ip, XFS_ILOCK_SHARED);
-
- *vp = vpp;
- *inode = inodep;
- return 0;
-}
-
-STATIC int
-xfs_open_by_handle(
- xfs_mount_t *mp,
- unsigned long arg,
- struct file *parfilp,
- struct inode *parinode)
-{
- int error;
- int new_fd;
- int permflag;
- struct file *filp;
- struct inode *inode;
- struct dentry *dentry;
- vnode_t *vp;
- xfs_fsop_handlereq_t hreq;
-
- error = xfs_vget_fsop_handlereq(mp, parinode, CAP_SYS_ADMIN, arg,
- sizeof(xfs_fsop_handlereq_t),
- &hreq, &vp, &inode);
- if (error)
- return -error;
-
- /* Restrict xfs_open_by_handle to directories & regular files. */
- if (!(S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode))) {
- iput(inode);
- return -XFS_ERROR(EINVAL);
- }
-
-#if BITS_PER_LONG != 32
- hreq.oflags |= O_LARGEFILE;
-#endif
- /* Put open permission in namei format. */
- permflag = hreq.oflags;
- if ((permflag+1) & O_ACCMODE)
- permflag++;
- if (permflag & O_TRUNC)
- permflag |= 2;
-
- if ((!(permflag & O_APPEND) || (permflag & O_TRUNC)) &&
- (permflag & FMODE_WRITE) && IS_APPEND(inode)) {
- iput(inode);
- return -XFS_ERROR(EPERM);
- }
-
- if ((permflag & FMODE_WRITE) && IS_IMMUTABLE(inode)) {
- iput(inode);
- return -XFS_ERROR(EACCES);
- }
-
- /* Can't write directories. */
- if ( S_ISDIR(inode->i_mode) && (permflag & FMODE_WRITE)) {
- iput(inode);
- return -XFS_ERROR(EISDIR);
- }
-
- if ((new_fd = get_unused_fd()) < 0) {
- iput(inode);
- return new_fd;
- }
-
- dentry = d_alloc_anon(inode);
- if (dentry == NULL) {
- iput(inode);
- put_unused_fd(new_fd);
- return -XFS_ERROR(ENOMEM);
- }
-
- /* Ensure umount returns EBUSY on umounts while this file is open. */
- mntget(parfilp->f_vfsmnt);
-
- /* Create file pointer. */
- filp = dentry_open(dentry, parfilp->f_vfsmnt, hreq.oflags);
- if (IS_ERR(filp)) {
- put_unused_fd(new_fd);
- return -XFS_ERROR(-PTR_ERR(filp));
- }
- if (inode->i_mode & S_IFREG)
- filp->f_op = &linvfs_invis_file_operations;
-
- fd_install(new_fd, filp);
- return new_fd;
-}
-
-STATIC int
-xfs_readlink_by_handle(
- xfs_mount_t *mp,
- unsigned long arg,
- struct file *parfilp,
- struct inode *parinode)
-{
- int error;
- struct iovec aiov;
- struct uio auio;
- struct inode *inode;
- xfs_fsop_handlereq_t hreq;
- vnode_t *vp;
- __u32 olen;
-
- error = xfs_vget_fsop_handlereq(mp, parinode, CAP_SYS_ADMIN, arg,
- sizeof(xfs_fsop_handlereq_t),
- &hreq, &vp, &inode);
- if (error)
- return -error;
-
- /* Restrict this handle operation to symlinks only. */
- if (vp->v_type != VLNK) {
- VN_RELE(vp);
- return -XFS_ERROR(EINVAL);
- }
-
- if (copy_from_user(&olen, hreq.ohandlen, sizeof(__u32))) {
- VN_RELE(vp);
- return -XFS_ERROR(EFAULT);
- }
- aiov.iov_len = olen;
- aiov.iov_base = hreq.ohandle;
-
- auio.uio_iov = &aiov;
- auio.uio_iovcnt = 1;
- auio.uio_offset = 0;
- auio.uio_segflg = UIO_USERSPACE;
- auio.uio_resid = olen;
-
- VOP_READLINK(vp, &auio, IO_INVIS, NULL, error);
-
- VN_RELE(vp);
- return (olen - auio.uio_resid);
-}
-
-STATIC int
-xfs_fssetdm_by_handle(
- xfs_mount_t *mp,
- unsigned long arg,
- struct file *parfilp,
- struct inode *parinode)
-{
- int error;
- struct fsdmidata fsd;
- xfs_fsop_setdm_handlereq_t dmhreq;
- struct inode *inode;
- bhv_desc_t *bdp;
- vnode_t *vp;
-
- error = xfs_vget_fsop_handlereq(mp, parinode, CAP_MKNOD, arg,
- sizeof(xfs_fsop_setdm_handlereq_t),
- (xfs_fsop_handlereq_t *)&dmhreq,
- &vp, &inode);
- if (error)
- return -error;
-
- if (IS_IMMUTABLE(inode) || IS_APPEND(inode)) {
- VN_RELE(vp);
- return -XFS_ERROR(EPERM);
- }
-
- if (copy_from_user(&fsd, dmhreq.data, sizeof(fsd))) {
- VN_RELE(vp);
- return -XFS_ERROR(EFAULT);
- }
-
- bdp = bhv_base_unlocked(VN_BHV_HEAD(vp));
- error = xfs_set_dmattrs(bdp, fsd.fsd_dmevmask, fsd.fsd_dmstate, NULL);
-
- VN_RELE(vp);
- if (error)
- return -error;
- return 0;
-}
-
-STATIC int
-xfs_attrlist_by_handle(
- xfs_mount_t *mp,
- unsigned long arg,
- struct file *parfilp,
- struct inode *parinode)
-{
- int error;
- attrlist_cursor_kern_t *cursor;
- xfs_fsop_attrlist_handlereq_t al_hreq;
- struct inode *inode;
- vnode_t *vp;
-
- error = xfs_vget_fsop_handlereq(mp, parinode, CAP_SYS_ADMIN, arg,
- sizeof(xfs_fsop_attrlist_handlereq_t),
- (xfs_fsop_handlereq_t *)&al_hreq,
- &vp, &inode);
- if (error)
- return -error;
-
- cursor = (attrlist_cursor_kern_t *)&al_hreq.pos;
- VOP_ATTR_LIST(vp, al_hreq.buffer, al_hreq.buflen, al_hreq.flags,
- cursor, NULL, error);
- VN_RELE(vp);
- if (error)
- return -error;
- return 0;
-}
-
-STATIC int
-xfs_attrmulti_by_handle(
- xfs_mount_t *mp,
- unsigned long arg,
- struct file *parfilp,
- struct inode *parinode)
-{
- int error;
- xfs_attr_multiop_t *ops;
- xfs_fsop_attrmulti_handlereq_t am_hreq;
- struct inode *inode;
- vnode_t *vp;
- int i, size;
-
- error = xfs_vget_fsop_handlereq(mp, parinode, CAP_SYS_ADMIN, arg,
- sizeof(xfs_fsop_attrmulti_handlereq_t),
- (xfs_fsop_handlereq_t *)&am_hreq,
- &vp, &inode);
- if (error)
- return -error;
-
- size = am_hreq.opcount * sizeof(attr_multiop_t);
- ops = (xfs_attr_multiop_t *)kmalloc(size, GFP_KERNEL);
- if (!ops) {
- VN_RELE(vp);
- return -XFS_ERROR(ENOMEM);
- }
-
- if (copy_from_user(ops, am_hreq.ops, size)) {
- kfree(ops);
- VN_RELE(vp);
- return -XFS_ERROR(EFAULT);
- }
-
- for (i = 0; i < am_hreq.opcount; i++) {
- switch(ops[i].am_opcode) {
- case ATTR_OP_GET:
- VOP_ATTR_GET(vp,ops[i].am_attrname, ops[i].am_attrvalue,
- &ops[i].am_length, ops[i].am_flags,
- NULL, ops[i].am_error);
- break;
- case ATTR_OP_SET:
- if (IS_IMMUTABLE(inode) || IS_APPEND(inode)) {
- ops[i].am_error = EPERM;
- break;
- }
- VOP_ATTR_SET(vp,ops[i].am_attrname, ops[i].am_attrvalue,
- ops[i].am_length, ops[i].am_flags,
- NULL, ops[i].am_error);
- break;
- case ATTR_OP_REMOVE:
- if (IS_IMMUTABLE(inode) || IS_APPEND(inode)) {
- ops[i].am_error = EPERM;
- break;
- }
- VOP_ATTR_REMOVE(vp, ops[i].am_attrname, ops[i].am_flags,
- NULL, ops[i].am_error);
- break;
- default:
- ops[i].am_error = EINVAL;
- }
- }
-
- if (copy_to_user(am_hreq.ops, ops, size))
- error = -XFS_ERROR(EFAULT);
-
- kfree(ops);
- VN_RELE(vp);
- return error;
-}
-
-/* prototypes for a few of the stack-hungry cases that have
- * their own functions. Functions are defined after their use
- * so gcc doesn't get fancy and inline them with -03 */
-
-STATIC int
-xfs_ioc_space(
- bhv_desc_t *bdp,
- vnode_t *vp,
- struct file *filp,
- int flags,
- unsigned int cmd,
- unsigned long arg);
-
-STATIC int
-xfs_ioc_bulkstat(
- xfs_mount_t *mp,
- unsigned int cmd,
- unsigned long arg);
-
-STATIC int
-xfs_ioc_fsgeometry_v1(
- xfs_mount_t *mp,
- unsigned long arg);
-
-STATIC int
-xfs_ioc_fsgeometry(
- xfs_mount_t *mp,
- unsigned long arg);
-
-STATIC int
-xfs_ioc_xattr(
- vnode_t *vp,
- xfs_inode_t *ip,
- struct file *filp,
- unsigned int cmd,
- unsigned long arg);
-
-STATIC int
-xfs_ioc_getbmap(
- bhv_desc_t *bdp,
- struct file *filp,
- int flags,
- unsigned int cmd,
- unsigned long arg);
-
-STATIC int
-xfs_ioc_getbmapx(
- bhv_desc_t *bdp,
- unsigned long arg);
-
-int
-xfs_ioctl(
- bhv_desc_t *bdp,
- struct inode *inode,
- struct file *filp,
- int ioflags,
- unsigned int cmd,
- unsigned long arg)
-{
- int error;
- vnode_t *vp;
- xfs_inode_t *ip;
- xfs_mount_t *mp;
-
- vp = LINVFS_GET_VP(inode);
-
- vn_trace_entry(vp, "xfs_ioctl", (inst_t *)__return_address);
-
- ip = XFS_BHVTOI(bdp);
- mp = ip->i_mount;
-
- switch (cmd) {
-
- case XFS_IOC_ALLOCSP:
- case XFS_IOC_FREESP:
- case XFS_IOC_RESVSP:
- case XFS_IOC_UNRESVSP:
- case XFS_IOC_ALLOCSP64:
- case XFS_IOC_FREESP64:
- case XFS_IOC_RESVSP64:
- case XFS_IOC_UNRESVSP64:
- /*
- * Only allow the sys admin to reserve space unless
- * unwritten extents are enabled.
- */
- if (!XFS_SB_VERSION_HASEXTFLGBIT(&mp->m_sb) &&
- !capable(CAP_SYS_ADMIN))
- return -EPERM;
-
- return xfs_ioc_space(bdp, vp, filp, ioflags, cmd, arg);
-
- case XFS_IOC_DIOINFO: {
- struct dioattr da;
- xfs_buftarg_t *target =
- (ip->i_d.di_flags & XFS_DIFLAG_REALTIME) ?
- mp->m_rtdev_targp : mp->m_ddev_targp;
-
- da.d_mem = da.d_miniosz = 1 << target->pbr_sshift;
- /* The size dio will do in one go */
- da.d_maxiosz = 64 * PAGE_CACHE_SIZE;
-
- if (copy_to_user((struct dioattr *)arg, &da, sizeof(da)))
- return -XFS_ERROR(EFAULT);
- return 0;
- }
-
- case XFS_IOC_FSBULKSTAT_SINGLE:
- case XFS_IOC_FSBULKSTAT:
- case XFS_IOC_FSINUMBERS:
- return xfs_ioc_bulkstat(mp, cmd, arg);
-
- case XFS_IOC_FSGEOMETRY_V1:
- return xfs_ioc_fsgeometry_v1(mp, arg);
-
- case XFS_IOC_FSGEOMETRY:
- return xfs_ioc_fsgeometry(mp, arg);
-
- case XFS_IOC_GETVERSION:
- case XFS_IOC_GETXFLAGS:
- case XFS_IOC_SETXFLAGS:
- case XFS_IOC_FSGETXATTR:
- case XFS_IOC_FSSETXATTR:
- case XFS_IOC_FSGETXATTRA:
- return xfs_ioc_xattr(vp, ip, filp, cmd, arg);
-
- case XFS_IOC_FSSETDM: {
- struct fsdmidata dmi;
-
- if (copy_from_user(&dmi, (struct fsdmidata *)arg, sizeof(dmi)))
- return -XFS_ERROR(EFAULT);
-
- error = xfs_set_dmattrs(bdp, dmi.fsd_dmevmask, dmi.fsd_dmstate,
- NULL);
- return -error;
- }
-
- case XFS_IOC_GETBMAP:
- case XFS_IOC_GETBMAPA:
- return xfs_ioc_getbmap(bdp, filp, ioflags, cmd, arg);
-
- case XFS_IOC_GETBMAPX:
- return xfs_ioc_getbmapx(bdp, arg);
-
- case XFS_IOC_FD_TO_HANDLE:
- case XFS_IOC_PATH_TO_HANDLE:
- case XFS_IOC_PATH_TO_FSHANDLE:
- return xfs_find_handle(cmd, arg);
-
- case XFS_IOC_OPEN_BY_HANDLE:
- return xfs_open_by_handle(mp, arg, filp, inode);
-
- case XFS_IOC_FSSETDM_BY_HANDLE:
- return xfs_fssetdm_by_handle(mp, arg, filp, inode);
-
- case XFS_IOC_READLINK_BY_HANDLE:
- return xfs_readlink_by_handle(mp, arg, filp, inode);
-
- case XFS_IOC_ATTRLIST_BY_HANDLE:
- return xfs_attrlist_by_handle(mp, arg, filp, inode);
-
- case XFS_IOC_ATTRMULTI_BY_HANDLE:
- return xfs_attrmulti_by_handle(mp, arg, filp, inode);
-
- case XFS_IOC_SWAPEXT: {
- error = xfs_swapext((struct xfs_swapext *)arg);
- return -error;
- }
-
- case XFS_IOC_FSCOUNTS: {
- xfs_fsop_counts_t out;
-
- error = xfs_fs_counts(mp, &out);
- if (error)
- return -error;
-
- if (copy_to_user((char *)arg, &out, sizeof(out)))
- return -XFS_ERROR(EFAULT);
- return 0;
- }
-
- case XFS_IOC_SET_RESBLKS: {
- xfs_fsop_resblks_t inout;
- __uint64_t in;
-
- if (!capable(CAP_SYS_ADMIN))
- return -EPERM;
-
- if (copy_from_user(&inout, (char *)arg, sizeof(inout)))
- return -XFS_ERROR(EFAULT);
-
- /* input parameter is passed in resblks field of structure */
- in = inout.resblks;
- error = xfs_reserve_blocks(mp, &in, &inout);
- if (error)
- return -error;
-
- if (copy_to_user((char *)arg, &inout, sizeof(inout)))
- return -XFS_ERROR(EFAULT);
- return 0;
- }
-
- case XFS_IOC_GET_RESBLKS: {
- xfs_fsop_resblks_t out;
-
- if (!capable(CAP_SYS_ADMIN))
- return -EPERM;
-
- error = xfs_reserve_blocks(mp, NULL, &out);
- if (error)
- return -error;
-
- if (copy_to_user((char *)arg, &out, sizeof(out)))
- return -XFS_ERROR(EFAULT);
-
- return 0;
- }
-
- case XFS_IOC_FSGROWFSDATA: {
- xfs_growfs_data_t in;
-
- if (!capable(CAP_SYS_ADMIN))
- return -EPERM;
-
- if (copy_from_user(&in, (char *)arg, sizeof(in)))
- return -XFS_ERROR(EFAULT);
-
- error = xfs_growfs_data(mp, &in);
- return -error;
- }
-
- case XFS_IOC_FSGROWFSLOG: {
- xfs_growfs_log_t in;
-
- if (!capable(CAP_SYS_ADMIN))
- return -EPERM;
-
- if (copy_from_user(&in, (char *)arg, sizeof(in)))
- return -XFS_ERROR(EFAULT);
-
- error = xfs_growfs_log(mp, &in);
- return -error;
- }
-
- case XFS_IOC_FSGROWFSRT: {
- xfs_growfs_rt_t in;
-
- if (!capable(CAP_SYS_ADMIN))
- return -EPERM;
-
- if (copy_from_user(&in, (char *)arg, sizeof(in)))
- return -XFS_ERROR(EFAULT);
-
- error = xfs_growfs_rt(mp, &in);
- return -error;
- }
-
- case XFS_IOC_FREEZE:
- if (!capable(CAP_SYS_ADMIN))
- return -EPERM;
-
- freeze_bdev(inode->i_sb->s_bdev);
- return 0;
-
- case XFS_IOC_THAW:
- if (!capable(CAP_SYS_ADMIN))
- return -EPERM;
- thaw_bdev(inode->i_sb->s_bdev, inode->i_sb);
- return 0;
-
- case XFS_IOC_GOINGDOWN: {
- __uint32_t in;
-
- if (!capable(CAP_SYS_ADMIN))
- return -EPERM;
-
- if (get_user(in, (__uint32_t *)arg))
- return -XFS_ERROR(EFAULT);
-
- error = xfs_fs_goingdown(mp, in);
- return -error;
- }
-
- case XFS_IOC_ERROR_INJECTION: {
- xfs_error_injection_t in;
-
- if (!capable(CAP_SYS_ADMIN))
- return -EPERM;
-
- if (copy_from_user(&in, (char *)arg, sizeof(in)))
- return -XFS_ERROR(EFAULT);
-
- error = xfs_errortag_add(in.errtag, mp);
- return -error;
- }
-
- case XFS_IOC_ERROR_CLEARALL:
- if (!capable(CAP_SYS_ADMIN))
- return -EPERM;
-
- error = xfs_errortag_clearall(mp);
- return -error;
-
- default:
- return -ENOTTY;
- }
-}
-
-STATIC int
-xfs_ioc_space(
- bhv_desc_t *bdp,
- vnode_t *vp,
- struct file *filp,
- int ioflags,
- unsigned int cmd,
- unsigned long arg)
-{
- xfs_flock64_t bf;
- int attr_flags = 0;
- int error;
-
- if (vp->v_inode.i_flags & (S_IMMUTABLE|S_APPEND))
- return -XFS_ERROR(EPERM);
-
- if (!(filp->f_flags & FMODE_WRITE))
- return -XFS_ERROR(EBADF);
-
- if (vp->v_type != VREG)
- return -XFS_ERROR(EINVAL);
-
- if (copy_from_user(&bf, (xfs_flock64_t *)arg, sizeof(bf)))
- return -XFS_ERROR(EFAULT);
-
- if (filp->f_flags & (O_NDELAY|O_NONBLOCK))
- attr_flags |= ATTR_NONBLOCK;
- if (ioflags & IO_INVIS)
- attr_flags |= ATTR_DMI;
-
- error = xfs_change_file_space(bdp, cmd, &bf, filp->f_pos,
- NULL, attr_flags);
- return -error;
-}
-
-STATIC int
-xfs_ioc_bulkstat(
- xfs_mount_t *mp,
- unsigned int cmd,
- unsigned long arg)
-{
- xfs_fsop_bulkreq_t bulkreq;
- int count; /* # of records returned */
- xfs_ino_t inlast; /* last inode number */
- int done;
- int error;
-
- /* done = 1 if there are more stats to get and if bulkstat */
- /* should be called again (unused here, but used in dmapi) */
-
- if (!capable(CAP_SYS_ADMIN))
- return -EPERM;
-
- if (XFS_FORCED_SHUTDOWN(mp))
- return -XFS_ERROR(EIO);
-
- if (copy_from_user(&bulkreq, (xfs_fsop_bulkreq_t *)arg,
- sizeof(xfs_fsop_bulkreq_t)))
- return -XFS_ERROR(EFAULT);
-
- if (copy_from_user(&inlast, (__s64 *)bulkreq.lastip,
- sizeof(__s64)))
- return -XFS_ERROR(EFAULT);
-
- if ((count = bulkreq.icount) <= 0)
- return -XFS_ERROR(EINVAL);
-
- if (cmd == XFS_IOC_FSINUMBERS)
- error = xfs_inumbers(mp, NULL, &inlast, &count,
- bulkreq.ubuffer);
- else if (cmd == XFS_IOC_FSBULKSTAT_SINGLE)
- error = xfs_bulkstat_single(mp, &inlast,
- bulkreq.ubuffer, &done);
- else { /* XFS_IOC_FSBULKSTAT */
- if (count == 1 && inlast != 0) {
- inlast++;
- error = xfs_bulkstat_single(mp, &inlast,
- bulkreq.ubuffer, &done);
- } else {
- error = xfs_bulkstat(mp, NULL, &inlast, &count,
- (bulkstat_one_pf)xfs_bulkstat_one, NULL,
- sizeof(xfs_bstat_t), bulkreq.ubuffer,
- BULKSTAT_FG_QUICK, &done);
- }
- }
-
- if (error)
- return -error;
-
- if (bulkreq.ocount != NULL) {
- if (copy_to_user((xfs_ino_t *)bulkreq.lastip, &inlast,
- sizeof(xfs_ino_t)))
- return -XFS_ERROR(EFAULT);
-
- if (copy_to_user((__s32 *)bulkreq.ocount, &count,
- sizeof(count)))
- return -XFS_ERROR(EFAULT);
- }
-
- return 0;
-}
-
-STATIC int
-xfs_ioc_fsgeometry_v1(
- xfs_mount_t *mp,
- unsigned long arg)
-{
- xfs_fsop_geom_v1_t fsgeo;
- int error;
-
- error = xfs_fs_geometry(mp, (xfs_fsop_geom_t *)&fsgeo, 3);
- if (error)
- return -error;
-
- if (copy_to_user((xfs_fsop_geom_t *)arg, &fsgeo, sizeof(fsgeo)))
- return -XFS_ERROR(EFAULT);
- return 0;
-}
-
-STATIC int
-xfs_ioc_fsgeometry(
- xfs_mount_t *mp,
- unsigned long arg)
-{
- xfs_fsop_geom_t fsgeo;
- int error;
-
- error = xfs_fs_geometry(mp, &fsgeo, 4);
- if (error)
- return -error;
-
- if (copy_to_user((xfs_fsop_geom_t *)arg, &fsgeo, sizeof(fsgeo)))
- return -XFS_ERROR(EFAULT);
- return 0;
-}
-
-/*
- * Linux extended inode flags interface.
- */
-#define LINUX_XFLAG_SYNC 0x00000008 /* Synchronous updates */
-#define LINUX_XFLAG_IMMUTABLE 0x00000010 /* Immutable file */
-#define LINUX_XFLAG_APPEND 0x00000020 /* writes to file may only append */
-#define LINUX_XFLAG_NODUMP 0x00000040 /* do not dump file */
-#define LINUX_XFLAG_NOATIME 0x00000080 /* do not update atime */
-
-STATIC unsigned int
-xfs_merge_ioc_xflags(
- unsigned int flags,
- unsigned int start)
-{
- unsigned int xflags = start;
-
- if (flags & LINUX_XFLAG_IMMUTABLE)
- xflags |= XFS_XFLAG_IMMUTABLE;
- else
- xflags &= ~XFS_XFLAG_IMMUTABLE;
- if (flags & LINUX_XFLAG_APPEND)
- xflags |= XFS_XFLAG_APPEND;
- else
- xflags &= ~XFS_XFLAG_APPEND;
- if (flags & LINUX_XFLAG_SYNC)
- xflags |= XFS_XFLAG_SYNC;
- else
- xflags &= ~XFS_XFLAG_SYNC;
- if (flags & LINUX_XFLAG_NOATIME)
- xflags |= XFS_XFLAG_NOATIME;
- else
- xflags &= ~XFS_XFLAG_NOATIME;
- if (flags & LINUX_XFLAG_NODUMP)
- xflags |= XFS_XFLAG_NODUMP;
- else
- xflags &= ~XFS_XFLAG_NODUMP;
-
- return xflags;
-}
-
-STATIC int
-xfs_ioc_xattr(
- vnode_t *vp,
- xfs_inode_t *ip,
- struct file *filp,
- unsigned int cmd,
- unsigned long arg)
-{
- struct fsxattr fa;
- vattr_t va;
- int error;
- int attr_flags;
- unsigned int flags;
-
- switch (cmd) {
- case XFS_IOC_FSGETXATTR: {
- va.va_mask = XFS_AT_XFLAGS|XFS_AT_EXTSIZE|XFS_AT_NEXTENTS;
- VOP_GETATTR(vp, &va, 0, NULL, error);
- if (error)
- return -error;
-
- fa.fsx_xflags = va.va_xflags;
- fa.fsx_extsize = va.va_extsize;
- fa.fsx_nextents = va.va_nextents;
-
- if (copy_to_user((struct fsxattr *)arg, &fa, sizeof(fa)))
- return -XFS_ERROR(EFAULT);
- return 0;
- }
-
- case XFS_IOC_FSSETXATTR: {
- if (copy_from_user(&fa, (struct fsxattr *)arg, sizeof(fa)))
- return -XFS_ERROR(EFAULT);
-
- attr_flags = 0;
- if (filp->f_flags & (O_NDELAY|O_NONBLOCK))
- attr_flags |= ATTR_NONBLOCK;
-
- va.va_mask = XFS_AT_XFLAGS | XFS_AT_EXTSIZE;
- va.va_xflags = fa.fsx_xflags;
- va.va_extsize = fa.fsx_extsize;
-
- VOP_SETATTR(vp, &va, attr_flags, NULL, error);
- if (!error)
- vn_revalidate(vp); /* update Linux inode flags */
- return -error;
- }
-
- case XFS_IOC_FSGETXATTRA: {
- va.va_mask = XFS_AT_XFLAGS|XFS_AT_EXTSIZE|XFS_AT_ANEXTENTS;
- VOP_GETATTR(vp, &va, 0, NULL, error);
- if (error)
- return -error;
-
- fa.fsx_xflags = va.va_xflags;
- fa.fsx_extsize = va.va_extsize;
- fa.fsx_nextents = va.va_anextents;
-
- if (copy_to_user((struct fsxattr *)arg, &fa, sizeof(fa)))
- return -XFS_ERROR(EFAULT);
- return 0;
- }
-
- case XFS_IOC_GETXFLAGS: {
- flags = 0;
- if (ip->i_d.di_flags & XFS_XFLAG_IMMUTABLE)
- flags |= LINUX_XFLAG_IMMUTABLE;
- if (ip->i_d.di_flags & XFS_XFLAG_APPEND)
- flags |= LINUX_XFLAG_APPEND;
- if (ip->i_d.di_flags & XFS_XFLAG_SYNC)
- flags |= LINUX_XFLAG_SYNC;
- if (ip->i_d.di_flags & XFS_XFLAG_NOATIME)
- flags |= LINUX_XFLAG_NOATIME;
- if (ip->i_d.di_flags & XFS_XFLAG_NODUMP)
- flags |= LINUX_XFLAG_NODUMP;
- if (copy_to_user((unsigned int *)arg, &flags, sizeof(flags)))
- return -XFS_ERROR(EFAULT);
- return 0;
- }
-
- case XFS_IOC_SETXFLAGS: {
- if (copy_from_user(&flags, (unsigned int *)arg, sizeof(flags)))
- return -XFS_ERROR(EFAULT);
-
- if (flags & ~(LINUX_XFLAG_IMMUTABLE | LINUX_XFLAG_APPEND | \
- LINUX_XFLAG_NOATIME | LINUX_XFLAG_NODUMP | \
- LINUX_XFLAG_SYNC))
- return -XFS_ERROR(EOPNOTSUPP);
-
- attr_flags = 0;
- if (filp->f_flags & (O_NDELAY|O_NONBLOCK))
- attr_flags |= ATTR_NONBLOCK;
-
- va.va_mask = XFS_AT_XFLAGS;
- va.va_xflags = xfs_merge_ioc_xflags(flags, ip->i_d.di_flags);
-
- VOP_SETATTR(vp, &va, attr_flags, NULL, error);
- if (!error)
- vn_revalidate(vp); /* update Linux inode flags */
- return -error;
- }
-
- case XFS_IOC_GETVERSION: {
- flags = LINVFS_GET_IP(vp)->i_generation;
- if (copy_to_user((unsigned int *)arg, &flags, sizeof(flags)))
- return -XFS_ERROR(EFAULT);
- return 0;
- }
-
- default:
- return -ENOTTY;
- }
-}
-
-STATIC int
-xfs_ioc_getbmap(
- bhv_desc_t *bdp,
- struct file *filp,
- int ioflags,
- unsigned int cmd,
- unsigned long arg)
-{
- struct getbmap bm;
- int iflags;
- int error;
-
- if (copy_from_user(&bm, (struct getbmap *)arg, sizeof(bm)))
- return -XFS_ERROR(EFAULT);
-
- if (bm.bmv_count < 2)
- return -XFS_ERROR(EINVAL);
-
- iflags = (cmd == XFS_IOC_GETBMAPA ? BMV_IF_ATTRFORK : 0);
- if (ioflags & IO_INVIS)
- iflags |= BMV_IF_NO_DMAPI_READ;
-
- error = xfs_getbmap(bdp, &bm, (struct getbmap *)arg+1, iflags);
- if (error)
- return -error;
-
- if (copy_to_user((struct getbmap *)arg, &bm, sizeof(bm)))
- return -XFS_ERROR(EFAULT);
- return 0;
-}
-
-STATIC int
-xfs_ioc_getbmapx(
- bhv_desc_t *bdp,
- unsigned long arg)
-{
- struct getbmapx bmx;
- struct getbmap bm;
- int iflags;
- int error;
-
- if (copy_from_user(&bmx, (struct getbmapx *)arg, sizeof(bmx)))
- return -XFS_ERROR(EFAULT);
-
- if (bmx.bmv_count < 2)
- return -XFS_ERROR(EINVAL);
-
- /*
- * Map input getbmapx structure to a getbmap
- * structure for xfs_getbmap.
- */
- GETBMAP_CONVERT(bmx, bm);
-
- iflags = bmx.bmv_iflags;
-
- if (iflags & (~BMV_IF_VALID))
- return -XFS_ERROR(EINVAL);
-
- iflags |= BMV_IF_EXTENDED;
-
- error = xfs_getbmap(bdp, &bm, (struct getbmapx *)arg+1, iflags);
- if (error)
- return -error;
-
- GETBMAP_CONVERT(bm, bmx);
-
- if (copy_to_user((struct getbmapx *)arg, &bmx, sizeof(bmx)))
- return -XFS_ERROR(EFAULT);
-
- return 0;
-}
+++ /dev/null
-/*
- * Copyright (c) 2000-2003 Silicon Graphics, Inc. All Rights Reserved.
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of version 2 of the GNU General Public License as
- * published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it would be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
- *
- * Further, this software is distributed without any warranty that it is
- * free of the rightful claim of any third person regarding infringement
- * or the like. Any license provided herein, whether implied or
- * otherwise, applies only to this software file. Patent licenses, if
- * any, provided herein do not apply to combinations of this program with
- * other software, or any other product whatsoever.
- *
- * You should have received a copy of the GNU General Public License along
- * with this program; if not, write the Free Software Foundation, Inc., 59
- * Temple Place - Suite 330, Boston MA 02111-1307, USA.
- *
- * Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy,
- * Mountain View, CA 94043, or:
- *
- * http://www.sgi.com
- *
- * For further information regarding this notice, see:
- *
- * http://oss.sgi.com/projects/GenInfo/SGIGPLNoticeExplan/
- */
-
-#include "xfs.h"
-#include "xfs_fs.h"
-#include "xfs_inum.h"
-#include "xfs_log.h"
-#include "xfs_trans.h"
-#include "xfs_sb.h"
-#include "xfs_ag.h"
-#include "xfs_dir.h"
-#include "xfs_dir2.h"
-#include "xfs_alloc.h"
-#include "xfs_dmapi.h"
-#include "xfs_quota.h"
-#include "xfs_mount.h"
-#include "xfs_alloc_btree.h"
-#include "xfs_bmap_btree.h"
-#include "xfs_ialloc_btree.h"
-#include "xfs_btree.h"
-#include "xfs_ialloc.h"
-#include "xfs_attr_sf.h"
-#include "xfs_dir_sf.h"
-#include "xfs_dir2_sf.h"
-#include "xfs_dinode.h"
-#include "xfs_inode.h"
-#include "xfs_bmap.h"
-#include "xfs_bit.h"
-#include "xfs_rtalloc.h"
-#include "xfs_error.h"
-#include "xfs_itable.h"
-#include "xfs_rw.h"
-#include "xfs_acl.h"
-#include "xfs_cap.h"
-#include "xfs_mac.h"
-#include "xfs_attr.h"
-#include "xfs_buf_item.h"
-#include "xfs_utils.h"
-
-#include <linux/xattr.h>
-
-
-/*
- * Pull the link count and size up from the xfs inode to the linux inode
- */
-STATIC void
-validate_fields(
- struct inode *ip)
-{
- vnode_t *vp = LINVFS_GET_VP(ip);
- vattr_t va;
- int error;
-
- va.va_mask = XFS_AT_NLINK|XFS_AT_SIZE|XFS_AT_NBLOCKS;
- VOP_GETATTR(vp, &va, ATTR_LAZY, NULL, error);
- if (likely(!error)) {
- ip->i_nlink = va.va_nlink;
- ip->i_blocks = va.va_nblocks;
-
- /* we're under i_sem so i_size can't change under us */
- if (i_size_read(ip) != va.va_size)
- i_size_write(ip, va.va_size);
- }
-}
-
-/*
- * Determine whether a process has a valid fs_struct (kernel daemons
- * like knfsd don't have an fs_struct).
- *
- * XXX(hch): nfsd is broken, better fix it instead.
- */
-STATIC inline int
-has_fs_struct(struct task_struct *task)
-{
- return (task->fs != init_task.fs);
-}
-
-STATIC int
-linvfs_mknod(
- struct inode *dir,
- struct dentry *dentry,
- int mode,
- dev_t rdev)
-{
- struct inode *ip;
- vattr_t va;
- vnode_t *vp = NULL, *dvp = LINVFS_GET_VP(dir);
- xfs_acl_t *default_acl = NULL;
- attrexists_t test_default_acl = _ACL_DEFAULT_EXISTS;
- int error;
-
- /*
- * Irix uses Missed'em'V split, but doesn't want to see
- * the upper 5 bits of (14bit) major.
- */
- if (!sysv_valid_dev(rdev) || MAJOR(rdev) & ~0x1ff)
- return -EINVAL;
-
- if (test_default_acl && test_default_acl(dvp)) {
- if (!_ACL_ALLOC(default_acl))
- return -ENOMEM;
- if (!_ACL_GET_DEFAULT(dvp, default_acl)) {
- _ACL_FREE(default_acl);
- default_acl = NULL;
- }
- }
-
- if (IS_POSIXACL(dir) && !default_acl && has_fs_struct(current))
- mode &= ~current->fs->umask;
-
- memset(&va, 0, sizeof(va));
- va.va_mask = XFS_AT_TYPE|XFS_AT_MODE;
- va.va_type = IFTOVT(mode);
- va.va_mode = mode;
-
- switch (mode & S_IFMT) {
- case S_IFCHR: case S_IFBLK: case S_IFIFO: case S_IFSOCK:
- va.va_rdev = sysv_encode_dev(rdev);
- va.va_mask |= XFS_AT_RDEV;
- /*FALLTHROUGH*/
- case S_IFREG:
- VOP_CREATE(dvp, dentry, &va, &vp, NULL, error);
- break;
- case S_IFDIR:
- VOP_MKDIR(dvp, dentry, &va, &vp, NULL, error);
- break;
- default:
- error = EINVAL;
- break;
- }
-
- if (default_acl) {
- if (!error) {
- error = _ACL_INHERIT(vp, &va, default_acl);
- if (!error) {
- VMODIFY(vp);
- } else {
- struct dentry teardown = {};
- int err2;
-
- /* Oh, the horror.
- * If we can't add the ACL we must back out.
- * ENOSPC can hit here, among other things.
- */
- teardown.d_inode = ip = LINVFS_GET_IP(vp);
- teardown.d_name = dentry->d_name;
- remove_inode_hash(ip);
- make_bad_inode(ip);
- if (S_ISDIR(mode))
- VOP_RMDIR(dvp, &teardown, NULL, err2);
- else
- VOP_REMOVE(dvp, &teardown, NULL, err2);
- VN_RELE(vp);
- }
- }
- _ACL_FREE(default_acl);
- }
-
- if (!error) {
- ASSERT(vp);
- ip = LINVFS_GET_IP(vp);
-
- if (S_ISCHR(mode) || S_ISBLK(mode))
- ip->i_rdev = rdev;
- else if (S_ISDIR(mode))
- validate_fields(ip);
- d_instantiate(dentry, ip);
- validate_fields(dir);
- }
- return -error;
-}
-
-STATIC int
-linvfs_create(
- struct inode *dir,
- struct dentry *dentry,
- int mode,
- struct nameidata *nd)
-{
- return linvfs_mknod(dir, dentry, mode, 0);
-}
-
-STATIC int
-linvfs_mkdir(
- struct inode *dir,
- struct dentry *dentry,
- int mode)
-{
- return linvfs_mknod(dir, dentry, mode|S_IFDIR, 0);
-}
-
-STATIC struct dentry *
-linvfs_lookup(
- struct inode *dir,
- struct dentry *dentry,
- struct nameidata *nd)
-{
- struct inode *ip = NULL;
- vnode_t *vp, *cvp = NULL;
- int error;
-
- if (dentry->d_name.len >= MAXNAMELEN)
- return ERR_PTR(-ENAMETOOLONG);
-
- vp = LINVFS_GET_VP(dir);
- VOP_LOOKUP(vp, dentry, &cvp, 0, NULL, NULL, error);
- if (!error) {
- ASSERT(cvp);
- ip = LINVFS_GET_IP(cvp);
- if (!ip) {
- VN_RELE(cvp);
- return ERR_PTR(-EACCES);
- }
- }
- if (error && (error != ENOENT))
- return ERR_PTR(-error);
- return d_splice_alias(ip, dentry);
-}
-
-STATIC int
-linvfs_link(
- struct dentry *old_dentry,
- struct inode *dir,
- struct dentry *dentry)
-{
- struct inode *ip; /* inode of guy being linked to */
- vnode_t *tdvp; /* target directory for new name/link */
- vnode_t *vp; /* vp of name being linked */
- int error;
-
- ip = old_dentry->d_inode; /* inode being linked to */
- if (S_ISDIR(ip->i_mode))
- return -EPERM;
-
- tdvp = LINVFS_GET_VP(dir);
- vp = LINVFS_GET_VP(ip);
-
- VOP_LINK(tdvp, vp, dentry, NULL, error);
- if (!error) {
- VMODIFY(tdvp);
- VN_HOLD(vp);
- validate_fields(ip);
- d_instantiate(dentry, ip);
- }
- return -error;
-}
-
-STATIC int
-linvfs_unlink(
- struct inode *dir,
- struct dentry *dentry)
-{
- struct inode *inode;
- vnode_t *dvp; /* directory containing name to remove */
- int error;
-
- inode = dentry->d_inode;
- dvp = LINVFS_GET_VP(dir);
-
- VOP_REMOVE(dvp, dentry, NULL, error);
- if (!error) {
- validate_fields(dir); /* For size only */
- validate_fields(inode);
- }
-
- return -error;
-}
-
-STATIC int
-linvfs_symlink(
- struct inode *dir,
- struct dentry *dentry,
- const char *symname)
-{
- struct inode *ip;
- vattr_t va;
- vnode_t *dvp; /* directory containing name to remove */
- vnode_t *cvp; /* used to lookup symlink to put in dentry */
- int error;
-
- dvp = LINVFS_GET_VP(dir);
- cvp = NULL;
-
- memset(&va, 0, sizeof(va));
- va.va_type = VLNK;
- va.va_mode = irix_symlink_mode ? 0777 & ~current->fs->umask : S_IRWXUGO;
- va.va_mask = XFS_AT_TYPE|XFS_AT_MODE;
-
- error = 0;
- VOP_SYMLINK(dvp, dentry, &va, (char *)symname, &cvp, NULL, error);
- if (!error && cvp) {
- ASSERT(cvp->v_type == VLNK);
- ip = LINVFS_GET_IP(cvp);
- d_instantiate(dentry, ip);
- validate_fields(dir);
- validate_fields(ip); /* size needs update */
- }
- return -error;
-}
-
-STATIC int
-linvfs_rmdir(
- struct inode *dir,
- struct dentry *dentry)
-{
- struct inode *inode = dentry->d_inode;
- vnode_t *dvp = LINVFS_GET_VP(dir);
- int error;
-
- VOP_RMDIR(dvp, dentry, NULL, error);
- if (!error) {
- validate_fields(inode);
- validate_fields(dir);
- }
- return -error;
-}
-
-STATIC int
-linvfs_rename(
- struct inode *odir,
- struct dentry *odentry,
- struct inode *ndir,
- struct dentry *ndentry)
-{
- struct inode *new_inode = ndentry->d_inode;
- vnode_t *fvp; /* from directory */
- vnode_t *tvp; /* target directory */
- int error;
-
- fvp = LINVFS_GET_VP(odir);
- tvp = LINVFS_GET_VP(ndir);
-
- VOP_RENAME(fvp, odentry, tvp, ndentry, NULL, error);
- if (error)
- return -error;
-
- if (new_inode)
- validate_fields(new_inode);
-
- validate_fields(odir);
- if (ndir != odir)
- validate_fields(ndir);
- return 0;
-}
-
-STATIC int
-linvfs_readlink(
- struct dentry *dentry,
- char *buf,
- int size)
-{
- vnode_t *vp = LINVFS_GET_VP(dentry->d_inode);
- uio_t uio;
- iovec_t iov;
- int error;
-
- iov.iov_base = buf;
- iov.iov_len = size;
-
- uio.uio_iov = &iov;
- uio.uio_offset = 0;
- uio.uio_segflg = UIO_USERSPACE;
- uio.uio_resid = size;
- uio.uio_iovcnt = 1;
-
- VOP_READLINK(vp, &uio, 0, NULL, error);
- if (error)
- return -error;
-
- return (size - uio.uio_resid);
-}
-
-/*
- * careful here - this function can get called recursively, so
- * we need to be very careful about how much stack we use.
- * uio is kmalloced for this reason...
- */
-STATIC int
-linvfs_follow_link(
- struct dentry *dentry,
- struct nameidata *nd)
-{
- vnode_t *vp;
- uio_t *uio;
- iovec_t iov;
- int error;
- char *link;
-
- ASSERT(dentry);
- ASSERT(nd);
-
- link = (char *)kmalloc(MAXNAMELEN+1, GFP_KERNEL);
- if (!link)
- return -ENOMEM;
-
- uio = (uio_t *)kmalloc(sizeof(uio_t), GFP_KERNEL);
- if (!uio) {
- kfree(link);
- return -ENOMEM;
- }
-
- vp = LINVFS_GET_VP(dentry->d_inode);
-
- iov.iov_base = link;
- iov.iov_len = MAXNAMELEN;
-
- uio->uio_iov = &iov;
- uio->uio_offset = 0;
- uio->uio_segflg = UIO_SYSSPACE;
- uio->uio_resid = MAXNAMELEN;
- uio->uio_iovcnt = 1;
-
- VOP_READLINK(vp, uio, 0, NULL, error);
- if (error) {
- kfree(uio);
- kfree(link);
- return -error;
- }
-
- link[MAXNAMELEN - uio->uio_resid] = '\0';
- kfree(uio);
-
- /* vfs_follow_link returns (-) errors */
- error = vfs_follow_link(nd, link);
- kfree(link);
- return error;
-}
-
-#ifdef CONFIG_XFS_POSIX_ACL
-STATIC int
-linvfs_permission(
- struct inode *inode,
- int mode,
- struct nameidata *nd)
-{
- vnode_t *vp = LINVFS_GET_VP(inode);
- int error;
-
- mode <<= 6; /* convert from linux to vnode access bits */
- VOP_ACCESS(vp, mode, NULL, error);
- return -error;
-}
-#else
-#define linvfs_permission NULL
-#endif
-
-STATIC int
-linvfs_getattr(
- struct vfsmount *mnt,
- struct dentry *dentry,
- struct kstat *stat)
-{
- struct inode *inode = dentry->d_inode;
- vnode_t *vp = LINVFS_GET_VP(inode);
- int error = 0;
-
- if (unlikely(vp->v_flag & VMODIFIED))
- error = vn_revalidate(vp);
- if (!error)
- generic_fillattr(inode, stat);
- return 0;
-}
-
-STATIC int
-linvfs_setattr(
- struct dentry *dentry,
- struct iattr *attr)
-{
- struct inode *inode = dentry->d_inode;
- unsigned int ia_valid = attr->ia_valid;
- vnode_t *vp = LINVFS_GET_VP(inode);
- vattr_t vattr;
- int flags = 0;
- int error;
-
- memset(&vattr, 0, sizeof(vattr_t));
- if (ia_valid & ATTR_UID) {
- vattr.va_mask |= XFS_AT_UID;
- vattr.va_uid = attr->ia_uid;
- }
- if (ia_valid & ATTR_GID) {
- vattr.va_mask |= XFS_AT_GID;
- vattr.va_gid = attr->ia_gid;
- }
- if (ia_valid & ATTR_SIZE) {
- vattr.va_mask |= XFS_AT_SIZE;
- vattr.va_size = attr->ia_size;
- }
- if (ia_valid & ATTR_ATIME) {
- vattr.va_mask |= XFS_AT_ATIME;
- vattr.va_atime = attr->ia_atime;
- }
- if (ia_valid & ATTR_MTIME) {
- vattr.va_mask |= XFS_AT_MTIME;
- vattr.va_mtime = attr->ia_mtime;
- }
- if (ia_valid & ATTR_CTIME) {
- vattr.va_mask |= XFS_AT_CTIME;
- vattr.va_ctime = attr->ia_ctime;
- }
- if (ia_valid & ATTR_MODE) {
- vattr.va_mask |= XFS_AT_MODE;
- vattr.va_mode = attr->ia_mode;
- if (!in_group_p(inode->i_gid) && !capable(CAP_FSETID))
- inode->i_mode &= ~S_ISGID;
- }
-
- if (ia_valid & (ATTR_MTIME_SET | ATTR_ATIME_SET))
- flags = ATTR_UTIME;
-#ifdef ATTR_NO_BLOCK
- if ((ia_valid & ATTR_NO_BLOCK))
- flags |= ATTR_NONBLOCK;
-#endif
-
- VOP_SETATTR(vp, &vattr, flags, NULL, error);
- if (error)
- return(-error); /* Positive error up from XFS */
- if (ia_valid & ATTR_SIZE) {
- error = vmtruncate(inode, attr->ia_size);
- }
-
- if (!error) {
- vn_revalidate(vp);
- }
- return error;
-}
-
-STATIC void
-linvfs_truncate(
- struct inode *inode)
-{
- block_truncate_page(inode->i_mapping, inode->i_size, linvfs_get_block);
-}
-
-STATIC int
-linvfs_setxattr(
- struct dentry *dentry,
- const char *name,
- const void *data,
- size_t size,
- int flags)
-{
- vnode_t *vp = LINVFS_GET_VP(dentry->d_inode);
- char *attr = (char *)name;
- attrnames_t *namesp;
- int xflags = 0;
- int error;
-
- namesp = attr_lookup_namespace(attr, attr_namespaces, ATTR_NAMECOUNT);
- if (!namesp)
- return -EOPNOTSUPP;
- attr += namesp->attr_namelen;
- error = namesp->attr_capable(vp, NULL);
- if (error)
- return error;
-
- /* Convert Linux syscall to XFS internal ATTR flags */
- if (flags & XATTR_CREATE)
- xflags |= ATTR_CREATE;
- if (flags & XATTR_REPLACE)
- xflags |= ATTR_REPLACE;
- xflags |= namesp->attr_flag;
- return namesp->attr_set(vp, attr, (void *)data, size, xflags);
-}
-
-STATIC ssize_t
-linvfs_getxattr(
- struct dentry *dentry,
- const char *name,
- void *data,
- size_t size)
-{
- vnode_t *vp = LINVFS_GET_VP(dentry->d_inode);
- char *attr = (char *)name;
- attrnames_t *namesp;
- int xflags = 0;
- ssize_t error;
-
- namesp = attr_lookup_namespace(attr, attr_namespaces, ATTR_NAMECOUNT);
- if (!namesp)
- return -EOPNOTSUPP;
- attr += namesp->attr_namelen;
- error = namesp->attr_capable(vp, NULL);
- if (error)
- return error;
-
- /* Convert Linux syscall to XFS internal ATTR flags */
- if (!size) {
- xflags |= ATTR_KERNOVAL;
- data = NULL;
- }
- xflags |= namesp->attr_flag;
- return namesp->attr_get(vp, attr, (void *)data, size, xflags);
-}
-
-STATIC ssize_t
-linvfs_listxattr(
- struct dentry *dentry,
- char *data,
- size_t size)
-{
- vnode_t *vp = LINVFS_GET_VP(dentry->d_inode);
- int error, xflags = ATTR_KERNAMELS;
- ssize_t result;
-
- if (!size)
- xflags |= ATTR_KERNOVAL;
- xflags |= capable(CAP_SYS_ADMIN) ? ATTR_KERNFULLS : ATTR_KERNORMALS;
-
- error = attr_generic_list(vp, data, size, xflags, &result);
- if (error < 0)
- return error;
- return result;
-}
-
-STATIC int
-linvfs_removexattr(
- struct dentry *dentry,
- const char *name)
-{
- vnode_t *vp = LINVFS_GET_VP(dentry->d_inode);
- char *attr = (char *)name;
- attrnames_t *namesp;
- int xflags = 0;
- int error;
-
- namesp = attr_lookup_namespace(attr, attr_namespaces, ATTR_NAMECOUNT);
- if (!namesp)
- return -EOPNOTSUPP;
- attr += namesp->attr_namelen;
- error = namesp->attr_capable(vp, NULL);
- if (error)
- return error;
- xflags |= namesp->attr_flag;
- return namesp->attr_remove(vp, attr, xflags);
-}
-
-
-struct inode_operations linvfs_file_inode_operations = {
- .permission = linvfs_permission,
- .truncate = linvfs_truncate,
- .getattr = linvfs_getattr,
- .setattr = linvfs_setattr,
- .setxattr = linvfs_setxattr,
- .getxattr = linvfs_getxattr,
- .listxattr = linvfs_listxattr,
- .removexattr = linvfs_removexattr,
-};
-
-struct inode_operations linvfs_dir_inode_operations = {
- .create = linvfs_create,
- .lookup = linvfs_lookup,
- .link = linvfs_link,
- .unlink = linvfs_unlink,
- .symlink = linvfs_symlink,
- .mkdir = linvfs_mkdir,
- .rmdir = linvfs_rmdir,
- .mknod = linvfs_mknod,
- .rename = linvfs_rename,
- .permission = linvfs_permission,
- .getattr = linvfs_getattr,
- .setattr = linvfs_setattr,
- .setxattr = linvfs_setxattr,
- .getxattr = linvfs_getxattr,
- .listxattr = linvfs_listxattr,
- .removexattr = linvfs_removexattr,
-};
-
-struct inode_operations linvfs_symlink_inode_operations = {
- .readlink = linvfs_readlink,
- .follow_link = linvfs_follow_link,
- .permission = linvfs_permission,
- .getattr = linvfs_getattr,
- .setattr = linvfs_setattr,
- .setxattr = linvfs_setxattr,
- .getxattr = linvfs_getxattr,
- .listxattr = linvfs_listxattr,
- .removexattr = linvfs_removexattr,
-};
+++ /dev/null
-/*
- * Copyright (c) 2000-2003 Silicon Graphics, Inc. All Rights Reserved.
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of version 2 of the GNU General Public License as
- * published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it would be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
- *
- * Further, this software is distributed without any warranty that it is
- * free of the rightful claim of any third person regarding infringement
- * or the like. Any license provided herein, whether implied or
- * otherwise, applies only to this software file. Patent licenses, if
- * any, provided herein do not apply to combinations of this program with
- * other software, or any other product whatsoever.
- *
- * You should have received a copy of the GNU General Public License along
- * with this program; if not, write the Free Software Foundation, Inc., 59
- * Temple Place - Suite 330, Boston MA 02111-1307, USA.
- *
- * Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy,
- * Mountain View, CA 94043, or:
- *
- * http://www.sgi.com
- *
- * For further information regarding this notice, see:
- *
- * http://oss.sgi.com/projects/GenInfo/SGIGPLNoticeExplan/
- */
-#ifndef __XFS_IOPS_H__
-#define __XFS_IOPS_H__
-
-extern struct inode_operations linvfs_file_inode_operations;
-extern struct inode_operations linvfs_dir_inode_operations;
-extern struct inode_operations linvfs_symlink_inode_operations;
-
-extern struct file_operations linvfs_file_operations;
-extern struct file_operations linvfs_invis_file_operations;
-extern struct file_operations linvfs_dir_operations;
-
-extern struct address_space_operations linvfs_aops;
-
-extern int linvfs_get_block(struct inode *, sector_t, struct buffer_head *, int);
-extern void linvfs_unwritten_done(struct buffer_head *, int);
-
-extern int xfs_ioctl(struct bhv_desc *, struct inode *, struct file *,
- int, unsigned int, unsigned long);
-
-#endif /* __XFS_IOPS_H__ */
+++ /dev/null
-/*
- * Copyright (c) 2000-2003 Silicon Graphics, Inc. All Rights Reserved.
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of version 2 of the GNU General Public License as
- * published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it would be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
- *
- * Further, this software is distributed without any warranty that it is
- * free of the rightful claim of any third person regarding infringement
- * or the like. Any license provided herein, whether implied or
- * otherwise, applies only to this software file. Patent licenses, if
- * any, provided herein do not apply to combinations of this program with
- * other software, or any other product whatsoever.
- *
- * You should have received a copy of the GNU General Public License along
- * with this program; if not, write the Free Software Foundation, Inc., 59
- * Temple Place - Suite 330, Boston MA 02111-1307, USA.
- *
- * Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy,
- * Mountain View, CA 94043, or:
- *
- * http://www.sgi.com
- *
- * For further information regarding this notice, see:
- *
- * http://oss.sgi.com/projects/GenInfo/SGIGPLNoticeExplan/
- */
-#ifndef __XFS_LINUX__
-#define __XFS_LINUX__
-
-#include <linux/types.h>
-#include <linux/config.h>
-
-/*
- * Some types are conditional depending on the target system.
- * XFS_BIG_BLKNOS needs block layer disk addresses to be 64 bits.
- * XFS_BIG_INUMS needs the VFS inode number to be 64 bits, as well
- * as requiring XFS_BIG_BLKNOS to be set.
- */
-#if defined(CONFIG_LBD) || (BITS_PER_LONG == 64)
-# define XFS_BIG_BLKNOS 1
-# if BITS_PER_LONG == 64
-# define XFS_BIG_INUMS 1
-# else
-# define XFS_BIG_INUMS 0
-# endif
-#else
-# define XFS_BIG_BLKNOS 0
-# define XFS_BIG_INUMS 0
-#endif
-
-#include <xfs_types.h>
-#include <xfs_arch.h>
-
-#include <kmem.h>
-#include <mrlock.h>
-#include <spin.h>
-#include <sv.h>
-#include <mutex.h>
-#include <sema.h>
-#include <time.h>
-
-#include <support/qsort.h>
-#include <support/ktrace.h>
-#include <support/debug.h>
-#include <support/move.h>
-#include <support/uuid.h>
-
-#include <linux/mm.h>
-#include <linux/kernel.h>
-#include <linux/blkdev.h>
-#include <linux/slab.h>
-#include <linux/module.h>
-#include <linux/file.h>
-#include <linux/swap.h>
-#include <linux/errno.h>
-#include <linux/sched.h>
-#include <linux/bitops.h>
-#include <linux/major.h>
-#include <linux/pagemap.h>
-#include <linux/vfs.h>
-#include <linux/seq_file.h>
-#include <linux/init.h>
-#include <linux/proc_fs.h>
-#include <linux/version.h>
-
-#include <asm/page.h>
-#include <asm/div64.h>
-#include <asm/param.h>
-#include <asm/uaccess.h>
-#include <asm/byteorder.h>
-#include <asm/unaligned.h>
-
-#include <xfs_behavior.h>
-#include <xfs_vfs.h>
-#include <xfs_cred.h>
-#include <xfs_vnode.h>
-#include <xfs_stats.h>
-#include <xfs_sysctl.h>
-#include <xfs_iops.h>
-#include <xfs_super.h>
-#include <xfs_globals.h>
-#include <xfs_fs_subr.h>
-#include <xfs_lrw.h>
-#include <xfs_buf.h>
-
-/*
- * Feature macros (disable/enable)
- */
-#undef HAVE_REFCACHE /* reference cache not needed for NFS in 2.6 */
-#define HAVE_SENDFILE /* sendfile(2) exists in 2.6, but not in 2.4 */
-
-/*
- * State flag for unwritten extent buffers.
- *
- * We need to be able to distinguish between these and delayed
- * allocate buffers within XFS. The generic IO path code does
- * not need to distinguish - we use the BH_Delay flag for both
- * delalloc and these ondisk-uninitialised buffers.
- */
-BUFFER_FNS(PrivateStart, unwritten);
-static inline void set_buffer_unwritten_io(struct buffer_head *bh)
-{
- bh->b_end_io = linvfs_unwritten_done;
-}
-
-#define xfs_refcache_size xfs_params.refcache_size.val
-#define xfs_refcache_purge_count xfs_params.refcache_purge.val
-#define restricted_chown xfs_params.restrict_chown.val
-#define irix_sgid_inherit xfs_params.sgid_inherit.val
-#define irix_symlink_mode xfs_params.symlink_mode.val
-#define xfs_panic_mask xfs_params.panic_mask.val
-#define xfs_error_level xfs_params.error_level.val
-#define xfs_syncd_interval (xfs_params.sync_interval.val * HZ / USER_HZ)
-#define xfs_stats_clear xfs_params.stats_clear.val
-#define xfs_inherit_sync xfs_params.inherit_sync.val
-#define xfs_inherit_nodump xfs_params.inherit_nodump.val
-#define xfs_inherit_noatime xfs_params.inherit_noatim.val
-#define xfs_flush_interval (xfs_params.flush_interval.val * HZ / USER_HZ)
-#define xfs_age_buffer (xfs_params.age_buffer.val * HZ / USER_HZ)
-
-#define current_cpu() smp_processor_id()
-#define current_pid() (current->pid)
-#define current_fsuid(cred) (current->fsuid)
-#define current_fsgid(cred) (current->fsgid)
-
-#define NBPP PAGE_SIZE
-#define DPPSHFT (PAGE_SHIFT - 9)
-#define NDPP (1 << (PAGE_SHIFT - 9))
-#define dtop(DD) (((DD) + NDPP - 1) >> DPPSHFT)
-#define dtopt(DD) ((DD) >> DPPSHFT)
-#define dpoff(DD) ((DD) & (NDPP-1))
-
-#define NBBY 8 /* number of bits per byte */
-#define NBPC PAGE_SIZE /* Number of bytes per click */
-#define BPCSHIFT PAGE_SHIFT /* LOG2(NBPC) if exact */
-
-/*
- * Size of block device i/o is parameterized here.
- * Currently the system supports page-sized i/o.
- */
-#define BLKDEV_IOSHIFT BPCSHIFT
-#define BLKDEV_IOSIZE (1<<BLKDEV_IOSHIFT)
-/* number of BB's per block device block */
-#define BLKDEV_BB BTOBB(BLKDEV_IOSIZE)
-
-/* bytes to clicks */
-#define btoc(x) (((__psunsigned_t)(x)+(NBPC-1))>>BPCSHIFT)
-#define btoct(x) ((__psunsigned_t)(x)>>BPCSHIFT)
-#define btoc64(x) (((__uint64_t)(x)+(NBPC-1))>>BPCSHIFT)
-#define btoct64(x) ((__uint64_t)(x)>>BPCSHIFT)
-#define io_btoc(x) (((__psunsigned_t)(x)+(IO_NBPC-1))>>IO_BPCSHIFT)
-#define io_btoct(x) ((__psunsigned_t)(x)>>IO_BPCSHIFT)
-
-/* off_t bytes to clicks */
-#define offtoc(x) (((__uint64_t)(x)+(NBPC-1))>>BPCSHIFT)
-#define offtoct(x) ((xfs_off_t)(x)>>BPCSHIFT)
-
-/* clicks to off_t bytes */
-#define ctooff(x) ((xfs_off_t)(x)<<BPCSHIFT)
-
-/* clicks to bytes */
-#define ctob(x) ((__psunsigned_t)(x)<<BPCSHIFT)
-#define btoct(x) ((__psunsigned_t)(x)>>BPCSHIFT)
-#define ctob64(x) ((__uint64_t)(x)<<BPCSHIFT)
-#define io_ctob(x) ((__psunsigned_t)(x)<<IO_BPCSHIFT)
-
-/* bytes to clicks */
-#define btoc(x) (((__psunsigned_t)(x)+(NBPC-1))>>BPCSHIFT)
-
-#ifndef CELL_CAPABLE
-#define FSC_NOTIFY_NAME_CHANGED(vp)
-#endif
-
-#ifndef ENOATTR
-#define ENOATTR ENODATA /* Attribute not found */
-#endif
-
-/* Note: EWRONGFS never visible outside the kernel */
-#define EWRONGFS EINVAL /* Mount with wrong filesystem type */
-
-/*
- * XXX EFSCORRUPTED needs a real value in errno.h. asm-i386/errno.h won't
- * return codes out of its known range in errno.
- * XXX Also note: needs to be < 1000 and fairly unique on Linux (mustn't
- * conflict with any code we use already or any code a driver may use)
- * XXX Some options (currently we do #2):
- * 1/ New error code ["Filesystem is corrupted", _after_ glibc updated]
- * 2/ 990 ["Unknown error 990"]
- * 3/ EUCLEAN ["Structure needs cleaning"]
- * 4/ Convert EFSCORRUPTED to EIO [just prior to return into userspace]
- */
-#define EFSCORRUPTED 990 /* Filesystem is corrupted */
-
-#define SYNCHRONIZE() barrier()
-#define __return_address __builtin_return_address(0)
-
-/*
- * IRIX (BSD) quotactl makes use of separate commands for user/group,
- * whereas on Linux the syscall encodes this information into the cmd
- * field (see the QCMD macro in quota.h). These macros help keep the
- * code portable - they are not visible from the syscall interface.
- */
-#define Q_XSETGQLIM XQM_CMD(0x8) /* set groups disk limits */
-#define Q_XGETGQUOTA XQM_CMD(0x9) /* get groups disk limits */
-
-/* IRIX uses a dynamic sizing algorithm (ndquot = 200 + numprocs*2) */
-/* we may well need to fine-tune this if it ever becomes an issue. */
-#define DQUOT_MAX_HEURISTIC 1024 /* NR_DQUOTS */
-#define ndquot DQUOT_MAX_HEURISTIC
-
-/* IRIX uses the current size of the name cache to guess a good value */
-/* - this isn't the same but is a good enough starting point for now. */
-#define DQUOT_HASH_HEURISTIC files_stat.nr_files
-
-/* IRIX inodes maintain the project ID also, zero this field on Linux */
-#define DEFAULT_PROJID 0
-#define dfltprid DEFAULT_PROJID
-
-#define MAXPATHLEN 1024
-
-#define MIN(a,b) (min(a,b))
-#define MAX(a,b) (max(a,b))
-#define howmany(x, y) (((x)+((y)-1))/(y))
-#define roundup(x, y) ((((x)+((y)-1))/(y))*(y))
-
-#define xfs_stack_trace() dump_stack()
-
-#define xfs_itruncate_data(ip, off) \
- (-vmtruncate(LINVFS_GET_IP(XFS_ITOV(ip)), (off)))
-
-
-/* Move the kernel do_div definition off to one side */
-
-#if defined __i386__
-/* For ia32 we need to pull some tricks to get past various versions
- * of the compiler which do not like us using do_div in the middle
- * of large functions.
- */
-static inline __u32 xfs_do_div(void *a, __u32 b, int n)
-{
- __u32 mod;
-
- switch (n) {
- case 4:
- mod = *(__u32 *)a % b;
- *(__u32 *)a = *(__u32 *)a / b;
- return mod;
- case 8:
- {
- unsigned long __upper, __low, __high, __mod;
- __u64 c = *(__u64 *)a;
- __upper = __high = c >> 32;
- __low = c;
- if (__high) {
- __upper = __high % (b);
- __high = __high / (b);
- }
- asm("divl %2":"=a" (__low), "=d" (__mod):"rm" (b), "0" (__low), "1" (__upper));
- asm("":"=A" (c):"a" (__low),"d" (__high));
- *(__u64 *)a = c;
- return __mod;
- }
- }
-
- /* NOTREACHED */
- return 0;
-}
-
-/* Side effect free 64 bit mod operation */
-static inline __u32 xfs_do_mod(void *a, __u32 b, int n)
-{
- switch (n) {
- case 4:
- return *(__u32 *)a % b;
- case 8:
- {
- unsigned long __upper, __low, __high, __mod;
- __u64 c = *(__u64 *)a;
- __upper = __high = c >> 32;
- __low = c;
- if (__high) {
- __upper = __high % (b);
- __high = __high / (b);
- }
- asm("divl %2":"=a" (__low), "=d" (__mod):"rm" (b), "0" (__low), "1" (__upper));
- asm("":"=A" (c):"a" (__low),"d" (__high));
- return __mod;
- }
- }
-
- /* NOTREACHED */
- return 0;
-}
-#else
-static inline __u32 xfs_do_div(void *a, __u32 b, int n)
-{
- __u32 mod;
-
- switch (n) {
- case 4:
- mod = *(__u32 *)a % b;
- *(__u32 *)a = *(__u32 *)a / b;
- return mod;
- case 8:
- mod = do_div(*(__u64 *)a, b);
- return mod;
- }
-
- /* NOTREACHED */
- return 0;
-}
-
-/* Side effect free 64 bit mod operation */
-static inline __u32 xfs_do_mod(void *a, __u32 b, int n)
-{
- switch (n) {
- case 4:
- return *(__u32 *)a % b;
- case 8:
- {
- __u64 c = *(__u64 *)a;
- return do_div(c, b);
- }
- }
-
- /* NOTREACHED */
- return 0;
-}
-#endif
-
-#undef do_div
-#define do_div(a, b) xfs_do_div(&(a), (b), sizeof(a))
-#define do_mod(a, b) xfs_do_mod(&(a), (b), sizeof(a))
-
-static inline __uint64_t roundup_64(__uint64_t x, __uint32_t y)
-{
- x += y - 1;
- do_div(x, y);
- return(x * y);
-}
-
-#endif /* __XFS_LINUX__ */
+++ /dev/null
-/*
- * Copyright (c) 2000-2003 Silicon Graphics, Inc. All Rights Reserved.
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of version 2 of the GNU General Public License as
- * published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it would be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
- *
- * Further, this software is distributed without any warranty that it is
- * free of the rightful claim of any third person regarding infringement
- * or the like. Any license provided herein, whether implied or
- * otherwise, applies only to this software file. Patent licenses, if
- * any, provided herein do not apply to combinations of this program with
- * other software, or any other product whatsoever.
- *
- * You should have received a copy of the GNU General Public License along
- * with this program; if not, write the Free Software Foundation, Inc., 59
- * Temple Place - Suite 330, Boston MA 02111-1307, USA.
- *
- * Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy,
- * Mountain View, CA 94043, or:
- *
- * http://www.sgi.com
- *
- * For further information regarding this notice, see:
- *
- * http://oss.sgi.com/projects/GenInfo/SGIGPLNoticeExplan/
- */
-/*
- * fs/xfs/linux/xfs_lrw.c (Linux Read Write stuff)
- *
- */
-
-#include "xfs.h"
-
-#include "xfs_fs.h"
-#include "xfs_inum.h"
-#include "xfs_log.h"
-#include "xfs_trans.h"
-#include "xfs_sb.h"
-#include "xfs_ag.h"
-#include "xfs_dir.h"
-#include "xfs_dir2.h"
-#include "xfs_alloc.h"
-#include "xfs_dmapi.h"
-#include "xfs_quota.h"
-#include "xfs_mount.h"
-#include "xfs_alloc_btree.h"
-#include "xfs_bmap_btree.h"
-#include "xfs_ialloc_btree.h"
-#include "xfs_btree.h"
-#include "xfs_ialloc.h"
-#include "xfs_attr_sf.h"
-#include "xfs_dir_sf.h"
-#include "xfs_dir2_sf.h"
-#include "xfs_dinode.h"
-#include "xfs_inode.h"
-#include "xfs_bmap.h"
-#include "xfs_bit.h"
-#include "xfs_rtalloc.h"
-#include "xfs_error.h"
-#include "xfs_itable.h"
-#include "xfs_rw.h"
-#include "xfs_acl.h"
-#include "xfs_cap.h"
-#include "xfs_mac.h"
-#include "xfs_attr.h"
-#include "xfs_inode_item.h"
-#include "xfs_buf_item.h"
-#include "xfs_utils.h"
-#include "xfs_iomap.h"
-
-#include <linux/capability.h>
-
-
-#if defined(XFS_RW_TRACE)
-void
-xfs_rw_enter_trace(
- int tag,
- xfs_iocore_t *io,
- const struct iovec *iovp,
- size_t segs,
- loff_t offset,
- int ioflags)
-{
- xfs_inode_t *ip = XFS_IO_INODE(io);
-
- if (ip->i_rwtrace == NULL)
- return;
- ktrace_enter(ip->i_rwtrace,
- (void *)(unsigned long)tag,
- (void *)ip,
- (void *)((unsigned long)((ip->i_d.di_size >> 32) & 0xffffffff)),
- (void *)((unsigned long)(ip->i_d.di_size & 0xffffffff)),
- (void *)(__psint_t)iovp,
- (void *)((unsigned long)segs),
- (void *)((unsigned long)((offset >> 32) & 0xffffffff)),
- (void *)((unsigned long)(offset & 0xffffffff)),
- (void *)((unsigned long)ioflags),
- (void *)((unsigned long)((io->io_new_size >> 32) & 0xffffffff)),
- (void *)((unsigned long)(io->io_new_size & 0xffffffff)),
- (void *)NULL,
- (void *)NULL,
- (void *)NULL,
- (void *)NULL,
- (void *)NULL);
-}
-
-void
-xfs_inval_cached_trace(
- xfs_iocore_t *io,
- xfs_off_t offset,
- xfs_off_t len,
- xfs_off_t first,
- xfs_off_t last)
-{
- xfs_inode_t *ip = XFS_IO_INODE(io);
-
- if (ip->i_rwtrace == NULL)
- return;
- ktrace_enter(ip->i_rwtrace,
- (void *)(__psint_t)XFS_INVAL_CACHED,
- (void *)ip,
- (void *)((unsigned long)((offset >> 32) & 0xffffffff)),
- (void *)((unsigned long)(offset & 0xffffffff)),
- (void *)((unsigned long)((len >> 32) & 0xffffffff)),
- (void *)((unsigned long)(len & 0xffffffff)),
- (void *)((unsigned long)((first >> 32) & 0xffffffff)),
- (void *)((unsigned long)(first & 0xffffffff)),
- (void *)((unsigned long)((last >> 32) & 0xffffffff)),
- (void *)((unsigned long)(last & 0xffffffff)),
- (void *)NULL,
- (void *)NULL,
- (void *)NULL,
- (void *)NULL,
- (void *)NULL,
- (void *)NULL);
-}
-#endif
-
-/*
- * xfs_iozero
- *
- * xfs_iozero clears the specified range of buffer supplied,
- * and marks all the affected blocks as valid and modified. If
- * an affected block is not allocated, it will be allocated. If
- * an affected block is not completely overwritten, and is not
- * valid before the operation, it will be read from disk before
- * being partially zeroed.
- */
-STATIC int
-xfs_iozero(
- struct inode *ip, /* inode */
- loff_t pos, /* offset in file */
- size_t count, /* size of data to zero */
- loff_t end_size) /* max file size to set */
-{
- unsigned bytes;
- struct page *page;
- struct address_space *mapping;
- char *kaddr;
- int status;
-
- mapping = ip->i_mapping;
- do {
- unsigned long index, offset;
-
- offset = (pos & (PAGE_CACHE_SIZE -1)); /* Within page */
- index = pos >> PAGE_CACHE_SHIFT;
- bytes = PAGE_CACHE_SIZE - offset;
- if (bytes > count)
- bytes = count;
-
- status = -ENOMEM;
- page = grab_cache_page(mapping, index);
- if (!page)
- break;
-
- kaddr = kmap(page);
- status = mapping->a_ops->prepare_write(NULL, page, offset,
- offset + bytes);
- if (status) {
- goto unlock;
- }
-
- memset((void *) (kaddr + offset), 0, bytes);
- flush_dcache_page(page);
- status = mapping->a_ops->commit_write(NULL, page, offset,
- offset + bytes);
- if (!status) {
- pos += bytes;
- count -= bytes;
- if (pos > i_size_read(ip))
- i_size_write(ip, pos < end_size ? pos : end_size);
- }
-
-unlock:
- kunmap(page);
- unlock_page(page);
- page_cache_release(page);
- if (status)
- break;
- } while (count);
-
- return (-status);
-}
-
-/*
- * xfs_inval_cached_pages
- *
- * This routine is responsible for keeping direct I/O and buffered I/O
- * somewhat coherent. From here we make sure that we're at least
- * temporarily holding the inode I/O lock exclusively and then call
- * the page cache to flush and invalidate any cached pages. If there
- * are no cached pages this routine will be very quick.
- */
-void
-xfs_inval_cached_pages(
- vnode_t *vp,
- xfs_iocore_t *io,
- xfs_off_t offset,
- int write,
- int relock)
-{
- xfs_mount_t *mp;
-
- if (!VN_CACHED(vp)) {
- return;
- }
-
- mp = io->io_mount;
-
- /*
- * We need to get the I/O lock exclusively in order
- * to safely invalidate pages and mappings.
- */
- if (relock) {
- XFS_IUNLOCK(mp, io, XFS_IOLOCK_SHARED);
- XFS_ILOCK(mp, io, XFS_IOLOCK_EXCL);
- }
-
- /* Writing beyond EOF creates a hole that must be zeroed */
- if (write && (offset > XFS_SIZE(mp, io))) {
- xfs_fsize_t isize;
-
- XFS_ILOCK(mp, io, XFS_ILOCK_EXCL|XFS_EXTSIZE_RD);
- isize = XFS_SIZE(mp, io);
- if (offset > isize) {
- xfs_zero_eof(vp, io, offset, isize, offset);
- }
- XFS_IUNLOCK(mp, io, XFS_ILOCK_EXCL|XFS_EXTSIZE_RD);
- }
-
- xfs_inval_cached_trace(io, offset, -1, ctooff(offtoct(offset)), -1);
- VOP_FLUSHINVAL_PAGES(vp, ctooff(offtoct(offset)), -1, FI_REMAPF_LOCKED);
- if (relock) {
- XFS_ILOCK_DEMOTE(mp, io, XFS_IOLOCK_EXCL);
- }
-}
-
-ssize_t /* bytes read, or (-) error */
-xfs_read(
- bhv_desc_t *bdp,
- struct kiocb *iocb,
- const struct iovec *iovp,
- unsigned int segs,
- loff_t *offset,
- int ioflags,
- cred_t *credp)
-{
- struct file *file = iocb->ki_filp;
- size_t size = 0;
- ssize_t ret;
- xfs_fsize_t n;
- xfs_inode_t *ip;
- xfs_mount_t *mp;
- vnode_t *vp;
- unsigned long seg;
-
- ip = XFS_BHVTOI(bdp);
- vp = BHV_TO_VNODE(bdp);
- mp = ip->i_mount;
-
- XFS_STATS_INC(xs_read_calls);
-
- /* START copy & waste from filemap.c */
- for (seg = 0; seg < segs; seg++) {
- const struct iovec *iv = &iovp[seg];
-
- /*
- * If any segment has a negative length, or the cumulative
- * length ever wraps negative then return -EINVAL.
- */
- size += iv->iov_len;
- if (unlikely((ssize_t)(size|iv->iov_len) < 0))
- return XFS_ERROR(-EINVAL);
- }
- /* END copy & waste from filemap.c */
-
- if (ioflags & IO_ISDIRECT) {
- xfs_buftarg_t *target =
- (ip->i_d.di_flags & XFS_DIFLAG_REALTIME) ?
- mp->m_rtdev_targp : mp->m_ddev_targp;
- if ((*offset & target->pbr_smask) ||
- (size & target->pbr_smask)) {
- if (*offset == ip->i_d.di_size) {
- return (0);
- }
- return -XFS_ERROR(EINVAL);
- }
- }
-
- n = XFS_MAXIOFFSET(mp) - *offset;
- if ((n <= 0) || (size == 0))
- return 0;
-
- if (n < size)
- size = n;
-
- if (XFS_FORCED_SHUTDOWN(mp)) {
- return -EIO;
- }
-
- /* OK so we are holding the I/O lock for the duration
- * of the submission, then what happens if the I/O
- * does not really happen here, but is scheduled
- * later?
- */
- xfs_ilock(ip, XFS_IOLOCK_SHARED);
-
- if (DM_EVENT_ENABLED(vp->v_vfsp, ip, DM_EVENT_READ) &&
- !(ioflags & IO_INVIS)) {
- vrwlock_t locktype = VRWLOCK_READ;
-
- ret = XFS_SEND_DATA(mp, DM_EVENT_READ,
- BHV_TO_VNODE(bdp), *offset, size,
- FILP_DELAY_FLAG(file), &locktype);
- if (ret) {
- xfs_iunlock(ip, XFS_IOLOCK_SHARED);
- return -ret;
- }
- }
-
- xfs_rw_enter_trace(XFS_READ_ENTER, &ip->i_iocore,
- iovp, segs, *offset, ioflags);
- ret = __generic_file_aio_read(iocb, iovp, segs, offset);
- xfs_iunlock(ip, XFS_IOLOCK_SHARED);
-
- if (ret > 0)
- XFS_STATS_ADD(xs_read_bytes, ret);
-
- if (likely(!(ioflags & IO_INVIS)))
- xfs_ichgtime(ip, XFS_ICHGTIME_ACC);
-
- return ret;
-}
-
-ssize_t
-xfs_sendfile(
- bhv_desc_t *bdp,
- struct file *filp,
- loff_t *offset,
- int ioflags,
- size_t count,
- read_actor_t actor,
- void *target,
- cred_t *credp)
-{
- ssize_t ret;
- xfs_fsize_t n;
- xfs_inode_t *ip;
- xfs_mount_t *mp;
- vnode_t *vp;
-
- ip = XFS_BHVTOI(bdp);
- vp = BHV_TO_VNODE(bdp);
- mp = ip->i_mount;
-
- XFS_STATS_INC(xs_read_calls);
-
- n = XFS_MAXIOFFSET(mp) - *offset;
- if ((n <= 0) || (count == 0))
- return 0;
-
- if (n < count)
- count = n;
-
- if (XFS_FORCED_SHUTDOWN(ip->i_mount))
- return -EIO;
-
- xfs_ilock(ip, XFS_IOLOCK_SHARED);
-
- if (DM_EVENT_ENABLED(vp->v_vfsp, ip, DM_EVENT_READ) &&
- (!(ioflags & IO_INVIS))) {
- vrwlock_t locktype = VRWLOCK_READ;
- int error;
-
- error = XFS_SEND_DATA(mp, DM_EVENT_READ, BHV_TO_VNODE(bdp), *offset, count,
- FILP_DELAY_FLAG(filp), &locktype);
- if (error) {
- xfs_iunlock(ip, XFS_IOLOCK_SHARED);
- return -error;
- }
- }
- xfs_rw_enter_trace(XFS_SENDFILE_ENTER, &ip->i_iocore,
- target, count, *offset, ioflags);
- ret = generic_file_sendfile(filp, offset, count, actor, target);
- xfs_iunlock(ip, XFS_IOLOCK_SHARED);
-
- XFS_STATS_ADD(xs_read_bytes, ret);
- xfs_ichgtime(ip, XFS_ICHGTIME_ACC);
- return ret;
-}
-
-/*
- * This routine is called to handle zeroing any space in the last
- * block of the file that is beyond the EOF. We do this since the
- * size is being increased without writing anything to that block
- * and we don't want anyone to read the garbage on the disk.
- */
-STATIC int /* error (positive) */
-xfs_zero_last_block(
- struct inode *ip,
- xfs_iocore_t *io,
- xfs_off_t offset,
- xfs_fsize_t isize,
- xfs_fsize_t end_size)
-{
- xfs_fileoff_t last_fsb;
- xfs_mount_t *mp;
- int nimaps;
- int zero_offset;
- int zero_len;
- int isize_fsb_offset;
- int error = 0;
- xfs_bmbt_irec_t imap;
- loff_t loff;
- size_t lsize;
-
- ASSERT(ismrlocked(io->io_lock, MR_UPDATE) != 0);
- ASSERT(offset > isize);
-
- mp = io->io_mount;
-
- isize_fsb_offset = XFS_B_FSB_OFFSET(mp, isize);
- if (isize_fsb_offset == 0) {
- /*
- * There are no extra bytes in the last block on disk to
- * zero, so return.
- */
- return 0;
- }
-
- last_fsb = XFS_B_TO_FSBT(mp, isize);
- nimaps = 1;
- error = XFS_BMAPI(mp, NULL, io, last_fsb, 1, 0, NULL, 0, &imap,
- &nimaps, NULL);
- if (error) {
- return error;
- }
- ASSERT(nimaps > 0);
- /*
- * If the block underlying isize is just a hole, then there
- * is nothing to zero.
- */
- if (imap.br_startblock == HOLESTARTBLOCK) {
- return 0;
- }
- /*
- * Zero the part of the last block beyond the EOF, and write it
- * out sync. We need to drop the ilock while we do this so we
- * don't deadlock when the buffer cache calls back to us.
- */
- XFS_IUNLOCK(mp, io, XFS_ILOCK_EXCL| XFS_EXTSIZE_RD);
- loff = XFS_FSB_TO_B(mp, last_fsb);
- lsize = XFS_FSB_TO_B(mp, 1);
-
- zero_offset = isize_fsb_offset;
- zero_len = mp->m_sb.sb_blocksize - isize_fsb_offset;
-
- error = xfs_iozero(ip, loff + zero_offset, zero_len, end_size);
-
- XFS_ILOCK(mp, io, XFS_ILOCK_EXCL|XFS_EXTSIZE_RD);
- ASSERT(error >= 0);
- return error;
-}
-
-/*
- * Zero any on disk space between the current EOF and the new,
- * larger EOF. This handles the normal case of zeroing the remainder
- * of the last block in the file and the unusual case of zeroing blocks
- * out beyond the size of the file. This second case only happens
- * with fixed size extents and when the system crashes before the inode
- * size was updated but after blocks were allocated. If fill is set,
- * then any holes in the range are filled and zeroed. If not, the holes
- * are left alone as holes.
- */
-
-int /* error (positive) */
-xfs_zero_eof(
- vnode_t *vp,
- xfs_iocore_t *io,
- xfs_off_t offset, /* starting I/O offset */
- xfs_fsize_t isize, /* current inode size */
- xfs_fsize_t end_size) /* terminal inode size */
-{
- struct inode *ip = LINVFS_GET_IP(vp);
- xfs_fileoff_t start_zero_fsb;
- xfs_fileoff_t end_zero_fsb;
- xfs_fileoff_t prev_zero_fsb;
- xfs_fileoff_t zero_count_fsb;
- xfs_fileoff_t last_fsb;
- xfs_extlen_t buf_len_fsb;
- xfs_extlen_t prev_zero_count;
- xfs_mount_t *mp;
- int nimaps;
- int error = 0;
- xfs_bmbt_irec_t imap;
- loff_t loff;
- size_t lsize;
-
- ASSERT(ismrlocked(io->io_lock, MR_UPDATE));
- ASSERT(ismrlocked(io->io_iolock, MR_UPDATE));
-
- mp = io->io_mount;
-
- /*
- * First handle zeroing the block on which isize resides.
- * We only zero a part of that block so it is handled specially.
- */
- error = xfs_zero_last_block(ip, io, offset, isize, end_size);
- if (error) {
- ASSERT(ismrlocked(io->io_lock, MR_UPDATE));
- ASSERT(ismrlocked(io->io_iolock, MR_UPDATE));
- return error;
- }
-
- /*
- * Calculate the range between the new size and the old
- * where blocks needing to be zeroed may exist. To get the
- * block where the last byte in the file currently resides,
- * we need to subtract one from the size and truncate back
- * to a block boundary. We subtract 1 in case the size is
- * exactly on a block boundary.
- */
- last_fsb = isize ? XFS_B_TO_FSBT(mp, isize - 1) : (xfs_fileoff_t)-1;
- start_zero_fsb = XFS_B_TO_FSB(mp, (xfs_ufsize_t)isize);
- end_zero_fsb = XFS_B_TO_FSBT(mp, offset - 1);
- ASSERT((xfs_sfiloff_t)last_fsb < (xfs_sfiloff_t)start_zero_fsb);
- if (last_fsb == end_zero_fsb) {
- /*
- * The size was only incremented on its last block.
- * We took care of that above, so just return.
- */
- return 0;
- }
-
- ASSERT(start_zero_fsb <= end_zero_fsb);
- prev_zero_fsb = NULLFILEOFF;
- prev_zero_count = 0;
- while (start_zero_fsb <= end_zero_fsb) {
- nimaps = 1;
- zero_count_fsb = end_zero_fsb - start_zero_fsb + 1;
- error = XFS_BMAPI(mp, NULL, io, start_zero_fsb, zero_count_fsb,
- 0, NULL, 0, &imap, &nimaps, NULL);
- if (error) {
- ASSERT(ismrlocked(io->io_lock, MR_UPDATE));
- ASSERT(ismrlocked(io->io_iolock, MR_UPDATE));
- return error;
- }
- ASSERT(nimaps > 0);
-
- if (imap.br_state == XFS_EXT_UNWRITTEN ||
- imap.br_startblock == HOLESTARTBLOCK) {
- /*
- * This loop handles initializing pages that were
- * partially initialized by the code below this
- * loop. It basically zeroes the part of the page
- * that sits on a hole and sets the page as P_HOLE
- * and calls remapf if it is a mapped file.
- */
- prev_zero_fsb = NULLFILEOFF;
- prev_zero_count = 0;
- start_zero_fsb = imap.br_startoff +
- imap.br_blockcount;
- ASSERT(start_zero_fsb <= (end_zero_fsb + 1));
- continue;
- }
-
- /*
- * There are blocks in the range requested.
- * Zero them a single write at a time. We actually
- * don't zero the entire range returned if it is
- * too big and simply loop around to get the rest.
- * That is not the most efficient thing to do, but it
- * is simple and this path should not be exercised often.
- */
- buf_len_fsb = XFS_FILBLKS_MIN(imap.br_blockcount,
- mp->m_writeio_blocks << 8);
- /*
- * Drop the inode lock while we're doing the I/O.
- * We'll still have the iolock to protect us.
- */
- XFS_IUNLOCK(mp, io, XFS_ILOCK_EXCL|XFS_EXTSIZE_RD);
-
- loff = XFS_FSB_TO_B(mp, start_zero_fsb);
- lsize = XFS_FSB_TO_B(mp, buf_len_fsb);
-
- error = xfs_iozero(ip, loff, lsize, end_size);
-
- if (error) {
- goto out_lock;
- }
-
- prev_zero_fsb = start_zero_fsb;
- prev_zero_count = buf_len_fsb;
- start_zero_fsb = imap.br_startoff + buf_len_fsb;
- ASSERT(start_zero_fsb <= (end_zero_fsb + 1));
-
- XFS_ILOCK(mp, io, XFS_ILOCK_EXCL|XFS_EXTSIZE_RD);
- }
-
- return 0;
-
-out_lock:
-
- XFS_ILOCK(mp, io, XFS_ILOCK_EXCL|XFS_EXTSIZE_RD);
- ASSERT(error >= 0);
- return error;
-}
-
-ssize_t /* bytes written, or (-) error */
-xfs_write(
- bhv_desc_t *bdp,
- struct kiocb *iocb,
- const struct iovec *iovp,
- unsigned int segs,
- loff_t *offset,
- int ioflags,
- cred_t *credp)
-{
- struct file *file = iocb->ki_filp;
- size_t size = 0;
- xfs_inode_t *xip;
- xfs_mount_t *mp;
- ssize_t ret;
- int error = 0;
- xfs_fsize_t isize, new_size;
- xfs_fsize_t n, limit;
- xfs_iocore_t *io;
- vnode_t *vp;
- unsigned long seg;
- int iolock;
- int eventsent = 0;
- vrwlock_t locktype;
-
- XFS_STATS_INC(xs_write_calls);
-
- vp = BHV_TO_VNODE(bdp);
- xip = XFS_BHVTOI(bdp);
-
- /* START copy & waste from filemap.c */
- for (seg = 0; seg < segs; seg++) {
- const struct iovec *iv = &iovp[seg];
-
- /*
- * If any segment has a negative length, or the cumulative
- * length ever wraps negative then return -EINVAL.
- */
- size += iv->iov_len;
- if (unlikely((ssize_t)(size|iv->iov_len) < 0))
- return XFS_ERROR(-EINVAL);
- }
- /* END copy & waste from filemap.c */
-
- if (size == 0)
- return 0;
-
- io = &xip->i_iocore;
- mp = io->io_mount;
-
- if (XFS_FORCED_SHUTDOWN(mp)) {
- return -EIO;
- }
-
- if (ioflags & IO_ISDIRECT) {
- xfs_buftarg_t *target =
- (xip->i_d.di_flags & XFS_DIFLAG_REALTIME) ?
- mp->m_rtdev_targp : mp->m_ddev_targp;
-
- if ((*offset & target->pbr_smask) ||
- (size & target->pbr_smask)) {
- return XFS_ERROR(-EINVAL);
- }
- iolock = XFS_IOLOCK_SHARED;
- locktype = VRWLOCK_WRITE_DIRECT;
- } else {
- iolock = XFS_IOLOCK_EXCL;
- locktype = VRWLOCK_WRITE;
- }
-
- xfs_ilock(xip, XFS_ILOCK_EXCL|iolock);
-
- isize = xip->i_d.di_size;
- limit = XFS_MAXIOFFSET(mp);
-
- if (file->f_flags & O_APPEND)
- *offset = isize;
-
-start:
- n = limit - *offset;
- if (n <= 0) {
- xfs_iunlock(xip, XFS_ILOCK_EXCL|iolock);
- return -EFBIG;
- }
-
- if (n < size)
- size = n;
-
- new_size = *offset + size;
- if (new_size > isize) {
- io->io_new_size = new_size;
- }
-
- if ((DM_EVENT_ENABLED(vp->v_vfsp, xip, DM_EVENT_WRITE) &&
- !(ioflags & IO_INVIS) && !eventsent)) {
- loff_t savedsize = *offset;
- int dmflags = FILP_DELAY_FLAG(file) | DM_SEM_FLAG_RD(ioflags);
-
- xfs_iunlock(xip, XFS_ILOCK_EXCL);
- error = XFS_SEND_DATA(xip->i_mount, DM_EVENT_WRITE, vp,
- *offset, size,
- dmflags, &locktype);
- if (error) {
- xfs_iunlock(xip, iolock);
- return -error;
- }
- xfs_ilock(xip, XFS_ILOCK_EXCL);
- eventsent = 1;
-
- /*
- * The iolock was dropped and reaquired in XFS_SEND_DATA
- * so we have to recheck the size when appending.
- * We will only "goto start;" once, since having sent the
- * event prevents another call to XFS_SEND_DATA, which is
- * what allows the size to change in the first place.
- */
- if ((file->f_flags & O_APPEND) &&
- savedsize != xip->i_d.di_size) {
- *offset = isize = xip->i_d.di_size;
- goto start;
- }
- }
-
- /*
- * On Linux, generic_file_write updates the times even if
- * no data is copied in so long as the write had a size.
- *
- * We must update xfs' times since revalidate will overcopy xfs.
- */
- if (size && !(ioflags & IO_INVIS))
- xfs_ichgtime(xip, XFS_ICHGTIME_MOD | XFS_ICHGTIME_CHG);
-
- /*
- * If the offset is beyond the size of the file, we have a couple
- * of things to do. First, if there is already space allocated
- * we need to either create holes or zero the disk or ...
- *
- * If there is a page where the previous size lands, we need
- * to zero it out up to the new size.
- */
-
- if (!(ioflags & IO_ISDIRECT) && (*offset > isize && isize)) {
- error = xfs_zero_eof(BHV_TO_VNODE(bdp), io, *offset,
- isize, *offset + size);
- if (error) {
- xfs_iunlock(xip, XFS_ILOCK_EXCL|iolock);
- return(-error);
- }
- }
- xfs_iunlock(xip, XFS_ILOCK_EXCL);
-
- /*
- * If we're writing the file then make sure to clear the
- * setuid and setgid bits if the process is not being run
- * by root. This keeps people from modifying setuid and
- * setgid binaries.
- */
-
- if (((xip->i_d.di_mode & S_ISUID) ||
- ((xip->i_d.di_mode & (S_ISGID | S_IXGRP)) ==
- (S_ISGID | S_IXGRP))) &&
- !capable(CAP_FSETID)) {
- error = xfs_write_clear_setuid(xip);
- if (error) {
- xfs_iunlock(xip, iolock);
- return -error;
- }
- }
-
-retry:
- if (ioflags & IO_ISDIRECT) {
- xfs_inval_cached_pages(vp, io, *offset, 1, 1);
- xfs_rw_enter_trace(XFS_DIOWR_ENTER,
- io, iovp, segs, *offset, ioflags);
- } else {
- xfs_rw_enter_trace(XFS_WRITE_ENTER,
- io, iovp, segs, *offset, ioflags);
- }
- ret = generic_file_aio_write_nolock(iocb, iovp, segs, offset);
-
- if ((ret == -ENOSPC) &&
- DM_EVENT_ENABLED(vp->v_vfsp, xip, DM_EVENT_NOSPACE) &&
- !(ioflags & IO_INVIS)) {
-
- xfs_rwunlock(bdp, locktype);
- error = XFS_SEND_NAMESP(xip->i_mount, DM_EVENT_NOSPACE, vp,
- DM_RIGHT_NULL, vp, DM_RIGHT_NULL, NULL, NULL,
- 0, 0, 0); /* Delay flag intentionally unused */
- if (error)
- return -error;
- xfs_rwlock(bdp, locktype);
- *offset = xip->i_d.di_size;
- goto retry;
- }
-
- if (*offset > xip->i_d.di_size) {
- xfs_ilock(xip, XFS_ILOCK_EXCL);
- if (*offset > xip->i_d.di_size) {
- struct inode *inode = LINVFS_GET_IP(vp);
-
- xip->i_d.di_size = *offset;
- i_size_write(inode, *offset);
- xip->i_update_core = 1;
- xip->i_update_size = 1;
- }
- xfs_iunlock(xip, XFS_ILOCK_EXCL);
- }
-
- if (ret <= 0) {
- xfs_rwunlock(bdp, locktype);
- return ret;
- }
-
- XFS_STATS_ADD(xs_write_bytes, ret);
-
- /* Handle various SYNC-type writes */
- if ((file->f_flags & O_SYNC) || IS_SYNC(file->f_dentry->d_inode)) {
-
- /*
- * If we're treating this as O_DSYNC and we have not updated the
- * size, force the log.
- */
-
- if (!(mp->m_flags & XFS_MOUNT_OSYNCISOSYNC)
- && !(xip->i_update_size)) {
- /*
- * If an allocation transaction occurred
- * without extending the size, then we have to force
- * the log up the proper point to ensure that the
- * allocation is permanent. We can't count on
- * the fact that buffered writes lock out direct I/O
- * writes - the direct I/O write could have extended
- * the size nontransactionally, then finished before
- * we started. xfs_write_file will think that the file
- * didn't grow but the update isn't safe unless the
- * size change is logged.
- *
- * Force the log if we've committed a transaction
- * against the inode or if someone else has and
- * the commit record hasn't gone to disk (e.g.
- * the inode is pinned). This guarantees that
- * all changes affecting the inode are permanent
- * when we return.
- */
-
- xfs_inode_log_item_t *iip;
- xfs_lsn_t lsn;
-
- iip = xip->i_itemp;
- if (iip && iip->ili_last_lsn) {
- lsn = iip->ili_last_lsn;
- xfs_log_force(mp, lsn,
- XFS_LOG_FORCE | XFS_LOG_SYNC);
- } else if (xfs_ipincount(xip) > 0) {
- xfs_log_force(mp, (xfs_lsn_t)0,
- XFS_LOG_FORCE | XFS_LOG_SYNC);
- }
-
- } else {
- xfs_trans_t *tp;
-
- /*
- * O_SYNC or O_DSYNC _with_ a size update are handled
- * the same way.
- *
- * If the write was synchronous then we need to make
- * sure that the inode modification time is permanent.
- * We'll have updated the timestamp above, so here
- * we use a synchronous transaction to log the inode.
- * It's not fast, but it's necessary.
- *
- * If this a dsync write and the size got changed
- * non-transactionally, then we need to ensure that
- * the size change gets logged in a synchronous
- * transaction.
- */
-
- tp = xfs_trans_alloc(mp, XFS_TRANS_WRITE_SYNC);
- if ((error = xfs_trans_reserve(tp, 0,
- XFS_SWRITE_LOG_RES(mp),
- 0, 0, 0))) {
- /* Transaction reserve failed */
- xfs_trans_cancel(tp, 0);
- } else {
- /* Transaction reserve successful */
- xfs_ilock(xip, XFS_ILOCK_EXCL);
- xfs_trans_ijoin(tp, xip, XFS_ILOCK_EXCL);
- xfs_trans_ihold(tp, xip);
- xfs_trans_log_inode(tp, xip, XFS_ILOG_CORE);
- xfs_trans_set_sync(tp);
- error = xfs_trans_commit(tp, 0, (xfs_lsn_t)0);
- xfs_iunlock(xip, XFS_ILOCK_EXCL);
- }
- }
- } /* (ioflags & O_SYNC) */
-
- xfs_rwunlock(bdp, locktype);
- return(ret);
-}
-
-/*
- * All xfs metadata buffers except log state machine buffers
- * get this attached as their b_bdstrat callback function.
- * This is so that we can catch a buffer
- * after prematurely unpinning it to forcibly shutdown the filesystem.
- */
-int
-xfs_bdstrat_cb(struct xfs_buf *bp)
-{
- xfs_mount_t *mp;
-
- mp = XFS_BUF_FSPRIVATE3(bp, xfs_mount_t *);
- if (!XFS_FORCED_SHUTDOWN(mp)) {
- pagebuf_iorequest(bp);
- return 0;
- } else {
- xfs_buftrace("XFS__BDSTRAT IOERROR", bp);
- /*
- * Metadata write that didn't get logged but
- * written delayed anyway. These aren't associated
- * with a transaction, and can be ignored.
- */
- if (XFS_BUF_IODONE_FUNC(bp) == NULL &&
- (XFS_BUF_ISREAD(bp)) == 0)
- return (xfs_bioerror_relse(bp));
- else
- return (xfs_bioerror(bp));
- }
-}
-
-
-int
-xfs_bmap(bhv_desc_t *bdp,
- xfs_off_t offset,
- ssize_t count,
- int flags,
- xfs_iomap_t *iomapp,
- int *niomaps)
-{
- xfs_inode_t *ip = XFS_BHVTOI(bdp);
- xfs_iocore_t *io = &ip->i_iocore;
-
- ASSERT((ip->i_d.di_mode & S_IFMT) == S_IFREG);
- ASSERT(((ip->i_d.di_flags & XFS_DIFLAG_REALTIME) != 0) ==
- ((ip->i_iocore.io_flags & XFS_IOCORE_RT) != 0));
-
- return xfs_iomap(io, offset, count, flags, iomapp, niomaps);
-}
-
-/*
- * Wrapper around bdstrat so that we can stop data
- * from going to disk in case we are shutting down the filesystem.
- * Typically user data goes thru this path; one of the exceptions
- * is the superblock.
- */
-int
-xfsbdstrat(
- struct xfs_mount *mp,
- struct xfs_buf *bp)
-{
- ASSERT(mp);
- if (!XFS_FORCED_SHUTDOWN(mp)) {
- /* Grio redirection would go here
- * if (XFS_BUF_IS_GRIO(bp)) {
- */
-
- pagebuf_iorequest(bp);
- return 0;
- }
-
- xfs_buftrace("XFSBDSTRAT IOERROR", bp);
- return (xfs_bioerror_relse(bp));
-}
-
-/*
- * If the underlying (data/log/rt) device is readonly, there are some
- * operations that cannot proceed.
- */
-int
-xfs_dev_is_read_only(
- xfs_mount_t *mp,
- char *message)
-{
- if (xfs_readonly_buftarg(mp->m_ddev_targp) ||
- xfs_readonly_buftarg(mp->m_logdev_targp) ||
- (mp->m_rtdev_targp && xfs_readonly_buftarg(mp->m_rtdev_targp))) {
- cmn_err(CE_NOTE,
- "XFS: %s required on read-only device.", message);
- cmn_err(CE_NOTE,
- "XFS: write access unavailable, cannot proceed.");
- return EROFS;
- }
- return 0;
-}
+++ /dev/null
-/*
- * Copyright (c) 2000-2003 Silicon Graphics, Inc. All Rights Reserved.
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of version 2 of the GNU General Public License as
- * published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it would be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
- *
- * Further, this software is distributed without any warranty that it is
- * free of the rightful claim of any third person regarding infringement
- * or the like. Any license provided herein, whether implied or
- * otherwise, applies only to this software file. Patent licenses, if
- * any, provided herein do not apply to combinations of this program with
- * other software, or any other product whatsoever.
- *
- * You should have received a copy of the GNU General Public License along
- * with this program; if not, write the Free Software Foundation, Inc., 59
- * Temple Place - Suite 330, Boston MA 02111-1307, USA.
- *
- * Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy,
- * Mountain View, CA 94043, or:
- *
- * http://www.sgi.com
- *
- * For further information regarding this notice, see:
- *
- * http://oss.sgi.com/projects/GenInfo/SGIGPLNoticeExplan/
- */
-#ifndef __XFS_LRW_H__
-#define __XFS_LRW_H__
-
-struct vnode;
-struct bhv_desc;
-struct xfs_mount;
-struct xfs_iocore;
-struct xfs_inode;
-struct xfs_bmbt_irec;
-struct xfs_buf;
-struct xfs_iomap;
-
-#if defined(XFS_RW_TRACE)
-/*
- * Defines for the trace mechanisms in xfs_lrw.c.
- */
-#define XFS_RW_KTRACE_SIZE 128
-
-#define XFS_READ_ENTER 1
-#define XFS_WRITE_ENTER 2
-#define XFS_IOMAP_READ_ENTER 3
-#define XFS_IOMAP_WRITE_ENTER 4
-#define XFS_IOMAP_READ_MAP 5
-#define XFS_IOMAP_WRITE_MAP 6
-#define XFS_IOMAP_WRITE_NOSPACE 7
-#define XFS_ITRUNC_START 8
-#define XFS_ITRUNC_FINISH1 9
-#define XFS_ITRUNC_FINISH2 10
-#define XFS_CTRUNC1 11
-#define XFS_CTRUNC2 12
-#define XFS_CTRUNC3 13
-#define XFS_CTRUNC4 14
-#define XFS_CTRUNC5 15
-#define XFS_CTRUNC6 16
-#define XFS_BUNMAPI 17
-#define XFS_INVAL_CACHED 18
-#define XFS_DIORD_ENTER 19
-#define XFS_DIOWR_ENTER 20
-#define XFS_SENDFILE_ENTER 21
-#define XFS_WRITEPAGE_ENTER 22
-#define XFS_RELEASEPAGE_ENTER 23
-#define XFS_IOMAP_ALLOC_ENTER 24
-#define XFS_IOMAP_ALLOC_MAP 25
-#define XFS_IOMAP_UNWRITTEN 26
-extern void xfs_rw_enter_trace(int, struct xfs_iocore *,
- const struct iovec *, size_t, loff_t, int);
-extern void xfs_inval_cached_trace(struct xfs_iocore *,
- xfs_off_t, xfs_off_t, xfs_off_t, xfs_off_t);
-#else
-#define xfs_rw_enter_trace(tag, io, iovec, segs, offset, ioflags)
-#define xfs_inval_cached_trace(io, offset, len, first, last)
-#endif
-
-/*
- * Maximum count of bmaps used by read and write paths.
- */
-#define XFS_MAX_RW_NBMAPS 4
-
-extern int xfs_bmap(struct bhv_desc *, xfs_off_t, ssize_t, int,
- struct xfs_iomap *, int *);
-extern int xfsbdstrat(struct xfs_mount *, struct xfs_buf *);
-extern int xfs_bdstrat_cb(struct xfs_buf *);
-
-extern int xfs_zero_eof(struct vnode *, struct xfs_iocore *, xfs_off_t,
- xfs_fsize_t, xfs_fsize_t);
-extern void xfs_inval_cached_pages(struct vnode *, struct xfs_iocore *,
- xfs_off_t, int, int);
-extern ssize_t xfs_read(struct bhv_desc *, struct kiocb *,
- const struct iovec *, unsigned int,
- loff_t *, int, struct cred *);
-extern ssize_t xfs_write(struct bhv_desc *, struct kiocb *,
- const struct iovec *, unsigned int,
- loff_t *, int, struct cred *);
-extern ssize_t xfs_sendfile(struct bhv_desc *, struct file *,
- loff_t *, int, size_t, read_actor_t,
- void *, struct cred *);
-
-extern int xfs_dev_is_read_only(struct xfs_mount *, char *);
-
-#define XFS_FSB_TO_DB_IO(io,fsb) \
- (((io)->io_flags & XFS_IOCORE_RT) ? \
- XFS_FSB_TO_BB((io)->io_mount, (fsb)) : \
- XFS_FSB_TO_DADDR((io)->io_mount, (fsb)))
-
-#endif /* __XFS_LRW_H__ */
+++ /dev/null
-/*
- * Copyright (c) 2000-2003 Silicon Graphics, Inc. All Rights Reserved.
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of version 2 of the GNU General Public License as
- * published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it would be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
- *
- * Further, this software is distributed without any warranty that it is
- * free of the rightful claim of any third person regarding infringement
- * or the like. Any license provided herein, whether implied or
- * otherwise, applies only to this software file. Patent licenses, if
- * any, provided herein do not apply to combinations of this program with
- * other software, or any other product whatsoever.
- *
- * You should have received a copy of the GNU General Public License along
- * with this program; if not, write the Free Software Foundation, Inc., 59
- * Temple Place - Suite 330, Boston MA 02111-1307, USA.
- *
- * Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy,
- * Mountain View, CA 94043, or:
- *
- * http://www.sgi.com
- *
- * For further information regarding this notice, see:
- *
- * http://oss.sgi.com/projects/GenInfo/SGIGPLNoticeExplan/
- */
-
-#include "xfs.h"
-#include <linux/proc_fs.h>
-
-DEFINE_PER_CPU(struct xfsstats, xfsstats);
-
-STATIC int
-xfs_read_xfsstats(
- char *buffer,
- char **start,
- off_t offset,
- int count,
- int *eof,
- void *data)
-{
- int c, i, j, len, val;
- __uint64_t xs_xstrat_bytes = 0;
- __uint64_t xs_write_bytes = 0;
- __uint64_t xs_read_bytes = 0;
-
- static struct xstats_entry {
- char *desc;
- int endpoint;
- } xstats[] = {
- { "extent_alloc", XFSSTAT_END_EXTENT_ALLOC },
- { "abt", XFSSTAT_END_ALLOC_BTREE },
- { "blk_map", XFSSTAT_END_BLOCK_MAPPING },
- { "bmbt", XFSSTAT_END_BLOCK_MAP_BTREE },
- { "dir", XFSSTAT_END_DIRECTORY_OPS },
- { "trans", XFSSTAT_END_TRANSACTIONS },
- { "ig", XFSSTAT_END_INODE_OPS },
- { "log", XFSSTAT_END_LOG_OPS },
- { "push_ail", XFSSTAT_END_TAIL_PUSHING },
- { "xstrat", XFSSTAT_END_WRITE_CONVERT },
- { "rw", XFSSTAT_END_READ_WRITE_OPS },
- { "attr", XFSSTAT_END_ATTRIBUTE_OPS },
- { "icluster", XFSSTAT_END_INODE_CLUSTER },
- { "vnodes", XFSSTAT_END_VNODE_OPS },
- { "buf", XFSSTAT_END_BUF },
- };
-
- /* Loop over all stats groups */
- for (i=j=len = 0; i < sizeof(xstats)/sizeof(struct xstats_entry); i++) {
- len += sprintf(buffer + len, xstats[i].desc);
- /* inner loop does each group */
- while (j < xstats[i].endpoint) {
- val = 0;
- /* sum over all cpus */
- for (c = 0; c < NR_CPUS; c++) {
- if (!cpu_possible(c)) continue;
- val += *(((__u32*)&per_cpu(xfsstats, c) + j));
- }
- len += sprintf(buffer + len, " %u", val);
- j++;
- }
- buffer[len++] = '\n';
- }
- /* extra precision counters */
- for (i = 0; i < NR_CPUS; i++) {
- if (!cpu_possible(i)) continue;
- xs_xstrat_bytes += per_cpu(xfsstats, i).xs_xstrat_bytes;
- xs_write_bytes += per_cpu(xfsstats, i).xs_write_bytes;
- xs_read_bytes += per_cpu(xfsstats, i).xs_read_bytes;
- }
-
- len += sprintf(buffer + len, "xpc %Lu %Lu %Lu\n",
- xs_xstrat_bytes, xs_write_bytes, xs_read_bytes);
- len += sprintf(buffer + len, "debug %u\n",
-#if defined(XFSDEBUG)
- 1);
-#else
- 0);
-#endif
-
- if (offset >= len) {
- *start = buffer;
- *eof = 1;
- return 0;
- }
- *start = buffer + offset;
- if ((len -= offset) > count)
- return count;
- *eof = 1;
-
- return len;
-}
-
-void
-xfs_init_procfs(void)
-{
- if (!proc_mkdir("fs/xfs", 0))
- return;
- create_proc_read_entry("fs/xfs/stat", 0, 0, xfs_read_xfsstats, NULL);
-}
-
-void
-xfs_cleanup_procfs(void)
-{
- remove_proc_entry("fs/xfs/stat", NULL);
- remove_proc_entry("fs/xfs", NULL);
-}
+++ /dev/null
-/*
- * Copyright (c) 2000 Silicon Graphics, Inc. All Rights Reserved.
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of version 2 of the GNU General Public License as
- * published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it would be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
- *
- * Further, this software is distributed without any warranty that it is
- * free of the rightful claim of any third person regarding infringement
- * or the like. Any license provided herein, whether implied or
- * otherwise, applies only to this software file. Patent licenses, if
- * any, provided herein do not apply to combinations of this program with
- * other software, or any other product whatsoever.
- *
- * You should have received a copy of the GNU General Public License along
- * with this program; if not, write the Free Software Foundation, Inc., 59
- * Temple Place - Suite 330, Boston MA 02111-1307, USA.
- *
- * Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy,
- * Mountain View, CA 94043, or:
- *
- * http://www.sgi.com
- *
- * For further information regarding this notice, see:
- *
- * http://oss.sgi.com/projects/GenInfo/SGIGPLNoticeExplan/
- */
-#ifndef __XFS_STATS_H__
-#define __XFS_STATS_H__
-
-
-#if defined(CONFIG_PROC_FS) && !defined(XFS_STATS_OFF)
-
-#include <linux/percpu.h>
-
-/*
- * XFS global statistics
- */
-struct xfsstats {
-# define XFSSTAT_END_EXTENT_ALLOC 4
- __uint32_t xs_allocx;
- __uint32_t xs_allocb;
- __uint32_t xs_freex;
- __uint32_t xs_freeb;
-# define XFSSTAT_END_ALLOC_BTREE (XFSSTAT_END_EXTENT_ALLOC+4)
- __uint32_t xs_abt_lookup;
- __uint32_t xs_abt_compare;
- __uint32_t xs_abt_insrec;
- __uint32_t xs_abt_delrec;
-# define XFSSTAT_END_BLOCK_MAPPING (XFSSTAT_END_ALLOC_BTREE+7)
- __uint32_t xs_blk_mapr;
- __uint32_t xs_blk_mapw;
- __uint32_t xs_blk_unmap;
- __uint32_t xs_add_exlist;
- __uint32_t xs_del_exlist;
- __uint32_t xs_look_exlist;
- __uint32_t xs_cmp_exlist;
-# define XFSSTAT_END_BLOCK_MAP_BTREE (XFSSTAT_END_BLOCK_MAPPING+4)
- __uint32_t xs_bmbt_lookup;
- __uint32_t xs_bmbt_compare;
- __uint32_t xs_bmbt_insrec;
- __uint32_t xs_bmbt_delrec;
-# define XFSSTAT_END_DIRECTORY_OPS (XFSSTAT_END_BLOCK_MAP_BTREE+4)
- __uint32_t xs_dir_lookup;
- __uint32_t xs_dir_create;
- __uint32_t xs_dir_remove;
- __uint32_t xs_dir_getdents;
-# define XFSSTAT_END_TRANSACTIONS (XFSSTAT_END_DIRECTORY_OPS+3)
- __uint32_t xs_trans_sync;
- __uint32_t xs_trans_async;
- __uint32_t xs_trans_empty;
-# define XFSSTAT_END_INODE_OPS (XFSSTAT_END_TRANSACTIONS+7)
- __uint32_t xs_ig_attempts;
- __uint32_t xs_ig_found;
- __uint32_t xs_ig_frecycle;
- __uint32_t xs_ig_missed;
- __uint32_t xs_ig_dup;
- __uint32_t xs_ig_reclaims;
- __uint32_t xs_ig_attrchg;
-# define XFSSTAT_END_LOG_OPS (XFSSTAT_END_INODE_OPS+5)
- __uint32_t xs_log_writes;
- __uint32_t xs_log_blocks;
- __uint32_t xs_log_noiclogs;
- __uint32_t xs_log_force;
- __uint32_t xs_log_force_sleep;
-# define XFSSTAT_END_TAIL_PUSHING (XFSSTAT_END_LOG_OPS+10)
- __uint32_t xs_try_logspace;
- __uint32_t xs_sleep_logspace;
- __uint32_t xs_push_ail;
- __uint32_t xs_push_ail_success;
- __uint32_t xs_push_ail_pushbuf;
- __uint32_t xs_push_ail_pinned;
- __uint32_t xs_push_ail_locked;
- __uint32_t xs_push_ail_flushing;
- __uint32_t xs_push_ail_restarts;
- __uint32_t xs_push_ail_flush;
-# define XFSSTAT_END_WRITE_CONVERT (XFSSTAT_END_TAIL_PUSHING+2)
- __uint32_t xs_xstrat_quick;
- __uint32_t xs_xstrat_split;
-# define XFSSTAT_END_READ_WRITE_OPS (XFSSTAT_END_WRITE_CONVERT+2)
- __uint32_t xs_write_calls;
- __uint32_t xs_read_calls;
-# define XFSSTAT_END_ATTRIBUTE_OPS (XFSSTAT_END_READ_WRITE_OPS+4)
- __uint32_t xs_attr_get;
- __uint32_t xs_attr_set;
- __uint32_t xs_attr_remove;
- __uint32_t xs_attr_list;
-# define XFSSTAT_END_INODE_CLUSTER (XFSSTAT_END_ATTRIBUTE_OPS+3)
- __uint32_t xs_iflush_count;
- __uint32_t xs_icluster_flushcnt;
- __uint32_t xs_icluster_flushinode;
-# define XFSSTAT_END_VNODE_OPS (XFSSTAT_END_INODE_CLUSTER+8)
- __uint32_t vn_active; /* # vnodes not on free lists */
- __uint32_t vn_alloc; /* # times vn_alloc called */
- __uint32_t vn_get; /* # times vn_get called */
- __uint32_t vn_hold; /* # times vn_hold called */
- __uint32_t vn_rele; /* # times vn_rele called */
- __uint32_t vn_reclaim; /* # times vn_reclaim called */
- __uint32_t vn_remove; /* # times vn_remove called */
- __uint32_t vn_free; /* # times vn_free called */
-#define XFSSTAT_END_BUF (XFSSTAT_END_VNODE_OPS+9)
- __uint32_t pb_get;
- __uint32_t pb_create;
- __uint32_t pb_get_locked;
- __uint32_t pb_get_locked_waited;
- __uint32_t pb_busy_locked;
- __uint32_t pb_miss_locked;
- __uint32_t pb_page_retries;
- __uint32_t pb_page_found;
- __uint32_t pb_get_read;
-/* Extra precision counters */
- __uint64_t xs_xstrat_bytes;
- __uint64_t xs_write_bytes;
- __uint64_t xs_read_bytes;
-};
-
-DECLARE_PER_CPU(struct xfsstats, xfsstats);
-
-/* We don't disable preempt, not too worried about poking the
- * wrong cpu's stat for now */
-#define XFS_STATS_INC(count) (__get_cpu_var(xfsstats).count++)
-#define XFS_STATS_DEC(count) (__get_cpu_var(xfsstats).count--)
-#define XFS_STATS_ADD(count, inc) (__get_cpu_var(xfsstats).count += (inc))
-
-extern void xfs_init_procfs(void);
-extern void xfs_cleanup_procfs(void);
-
-
-#else /* !CONFIG_PROC_FS */
-
-# define XFS_STATS_INC(count)
-# define XFS_STATS_DEC(count)
-# define XFS_STATS_ADD(count, inc)
-
-static __inline void xfs_init_procfs(void) { };
-static __inline void xfs_cleanup_procfs(void) { };
-
-#endif /* !CONFIG_PROC_FS */
-
-#endif /* __XFS_STATS_H__ */
+++ /dev/null
-/*
- * Copyright (c) 2000-2004 Silicon Graphics, Inc. All Rights Reserved.
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of version 2 of the GNU General Public License as
- * published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it would be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
- *
- * Further, this software is distributed without any warranty that it is
- * free of the rightful claim of any third person regarding infringement
- * or the like. Any license provided herein, whether implied or
- * otherwise, applies only to this software file. Patent licenses, if
- * any, provided herein do not apply to combinations of this program with
- * other software, or any other product whatsoever.
- *
- * You should have received a copy of the GNU General Public License along
- * with this program; if not, write the Free Software Foundation, Inc., 59
- * Temple Place - Suite 330, Boston MA 02111-1307, USA.
- *
- * Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy,
- * Mountain View, CA 94043, or:
- *
- * http://www.sgi.com
- *
- * For further information regarding this notice, see:
- *
- * http://oss.sgi.com/projects/GenInfo/SGIGPLNoticeExplan/
- */
-
-#include "xfs.h"
-
-#include "xfs_inum.h"
-#include "xfs_log.h"
-#include "xfs_clnt.h"
-#include "xfs_trans.h"
-#include "xfs_sb.h"
-#include "xfs_dir.h"
-#include "xfs_dir2.h"
-#include "xfs_alloc.h"
-#include "xfs_dmapi.h"
-#include "xfs_quota.h"
-#include "xfs_mount.h"
-#include "xfs_alloc_btree.h"
-#include "xfs_bmap_btree.h"
-#include "xfs_ialloc_btree.h"
-#include "xfs_btree.h"
-#include "xfs_ialloc.h"
-#include "xfs_attr_sf.h"
-#include "xfs_dir_sf.h"
-#include "xfs_dir2_sf.h"
-#include "xfs_dinode.h"
-#include "xfs_inode.h"
-#include "xfs_bmap.h"
-#include "xfs_bit.h"
-#include "xfs_rtalloc.h"
-#include "xfs_error.h"
-#include "xfs_itable.h"
-#include "xfs_rw.h"
-#include "xfs_acl.h"
-#include "xfs_cap.h"
-#include "xfs_mac.h"
-#include "xfs_attr.h"
-#include "xfs_buf_item.h"
-#include "xfs_utils.h"
-#include "xfs_version.h"
-
-#include <linux/namei.h>
-#include <linux/init.h>
-#include <linux/mount.h>
-#include <linux/suspend.h>
-
-STATIC struct quotactl_ops linvfs_qops;
-STATIC struct super_operations linvfs_sops;
-STATIC struct export_operations linvfs_export_ops;
-STATIC kmem_cache_t * linvfs_inode_cachep;
-
-STATIC struct xfs_mount_args *
-xfs_args_allocate(
- struct super_block *sb)
-{
- struct xfs_mount_args *args;
-
- args = kmem_zalloc(sizeof(struct xfs_mount_args), KM_SLEEP);
- args->logbufs = args->logbufsize = -1;
- strncpy(args->fsname, sb->s_id, MAXNAMELEN);
-
- /* Copy the already-parsed mount(2) flags we're interested in */
- if (sb->s_flags & MS_NOATIME)
- args->flags |= XFSMNT_NOATIME;
-
- /* Default to 32 bit inodes on Linux all the time */
- args->flags |= XFSMNT_32BITINODES;
-
- return args;
-}
-
-__uint64_t
-xfs_max_file_offset(
- unsigned int blockshift)
-{
- unsigned int pagefactor = 1;
- unsigned int bitshift = BITS_PER_LONG - 1;
-
- /* Figure out maximum filesize, on Linux this can depend on
- * the filesystem blocksize (on 32 bit platforms).
- * __block_prepare_write does this in an [unsigned] long...
- * page->index << (PAGE_CACHE_SHIFT - bbits)
- * So, for page sized blocks (4K on 32 bit platforms),
- * this wraps at around 8Tb (hence MAX_LFS_FILESIZE which is
- * (((u64)PAGE_CACHE_SIZE << (BITS_PER_LONG-1))-1)
- * but for smaller blocksizes it is less (bbits = log2 bsize).
- * Note1: get_block_t takes a long (implicit cast from above)
- * Note2: The Large Block Device (LBD and HAVE_SECTOR_T) patch
- * can optionally convert the [unsigned] long from above into
- * an [unsigned] long long.
- */
-
-#if BITS_PER_LONG == 32
-# if defined(CONFIG_LBD)
- ASSERT(sizeof(sector_t) == 8);
- pagefactor = PAGE_CACHE_SIZE;
- bitshift = BITS_PER_LONG;
-# else
- pagefactor = PAGE_CACHE_SIZE >> (PAGE_CACHE_SHIFT - blockshift);
-# endif
-#endif
-
- return (((__uint64_t)pagefactor) << bitshift) - 1;
-}
-
-STATIC __inline__ void
-xfs_set_inodeops(
- struct inode *inode)
-{
- vnode_t *vp = LINVFS_GET_VP(inode);
-
- if (vp->v_type == VNON) {
- make_bad_inode(inode);
- } else if (S_ISREG(inode->i_mode)) {
- inode->i_op = &linvfs_file_inode_operations;
- inode->i_fop = &linvfs_file_operations;
- inode->i_mapping->a_ops = &linvfs_aops;
- } else if (S_ISDIR(inode->i_mode)) {
- inode->i_op = &linvfs_dir_inode_operations;
- inode->i_fop = &linvfs_dir_operations;
- } else if (S_ISLNK(inode->i_mode)) {
- inode->i_op = &linvfs_symlink_inode_operations;
- if (inode->i_blocks)
- inode->i_mapping->a_ops = &linvfs_aops;
- } else {
- inode->i_op = &linvfs_file_inode_operations;
- init_special_inode(inode, inode->i_mode, inode->i_rdev);
- }
-}
-
-STATIC __inline__ void
-xfs_revalidate_inode(
- xfs_mount_t *mp,
- vnode_t *vp,
- xfs_inode_t *ip)
-{
- struct inode *inode = LINVFS_GET_IP(vp);
-
- inode->i_mode = (ip->i_d.di_mode & MODEMASK) | VTTOIF(vp->v_type);
- inode->i_nlink = ip->i_d.di_nlink;
- inode->i_uid = ip->i_d.di_uid;
- inode->i_gid = ip->i_d.di_gid;
- if (((1 << vp->v_type) & ((1<<VBLK) | (1<<VCHR))) == 0) {
- inode->i_rdev = 0;
- } else {
- xfs_dev_t dev = ip->i_df.if_u2.if_rdev;
- inode->i_rdev = MKDEV(sysv_major(dev) & 0x1ff, sysv_minor(dev));
- }
- inode->i_blksize = PAGE_CACHE_SIZE;
- inode->i_generation = ip->i_d.di_gen;
- i_size_write(inode, ip->i_d.di_size);
- inode->i_blocks =
- XFS_FSB_TO_BB(mp, ip->i_d.di_nblocks + ip->i_delayed_blks);
- inode->i_atime.tv_sec = ip->i_d.di_atime.t_sec;
- inode->i_atime.tv_nsec = ip->i_d.di_atime.t_nsec;
- inode->i_mtime.tv_sec = ip->i_d.di_mtime.t_sec;
- inode->i_mtime.tv_nsec = ip->i_d.di_mtime.t_nsec;
- inode->i_ctime.tv_sec = ip->i_d.di_ctime.t_sec;
- inode->i_ctime.tv_nsec = ip->i_d.di_ctime.t_nsec;
- if (ip->i_d.di_flags & XFS_DIFLAG_IMMUTABLE)
- inode->i_flags |= S_IMMUTABLE;
- else
- inode->i_flags &= ~S_IMMUTABLE;
- if (ip->i_d.di_flags & XFS_DIFLAG_APPEND)
- inode->i_flags |= S_APPEND;
- else
- inode->i_flags &= ~S_APPEND;
- if (ip->i_d.di_flags & XFS_DIFLAG_SYNC)
- inode->i_flags |= S_SYNC;
- else
- inode->i_flags &= ~S_SYNC;
- if (ip->i_d.di_flags & XFS_DIFLAG_NOATIME)
- inode->i_flags |= S_NOATIME;
- else
- inode->i_flags &= ~S_NOATIME;
- vp->v_flag &= ~VMODIFIED;
-}
-
-void
-xfs_initialize_vnode(
- bhv_desc_t *bdp,
- vnode_t *vp,
- bhv_desc_t *inode_bhv,
- int unlock)
-{
- xfs_inode_t *ip = XFS_BHVTOI(inode_bhv);
- struct inode *inode = LINVFS_GET_IP(vp);
-
- if (!inode_bhv->bd_vobj) {
- vp->v_vfsp = bhvtovfs(bdp);
- bhv_desc_init(inode_bhv, ip, vp, &xfs_vnodeops);
- bhv_insert(VN_BHV_HEAD(vp), inode_bhv);
- }
-
- vp->v_type = IFTOVT(ip->i_d.di_mode);
-
- /* Have we been called during the new inode create process,
- * in which case we are too early to fill in the Linux inode.
- */
- if (vp->v_type == VNON)
- return;
-
- xfs_revalidate_inode(XFS_BHVTOM(bdp), vp, ip);
-
- /* For new inodes we need to set the ops vectors,
- * and unlock the inode.
- */
- if (unlock && (inode->i_state & I_NEW)) {
- xfs_set_inodeops(inode);
- unlock_new_inode(inode);
- }
-}
-
-void
-xfs_flush_inode(
- xfs_inode_t *ip)
-{
- struct inode *inode = LINVFS_GET_IP(XFS_ITOV(ip));
-
- filemap_flush(inode->i_mapping);
-}
-
-void
-xfs_flush_device(
- xfs_inode_t *ip)
-{
- sync_blockdev(XFS_ITOV(ip)->v_vfsp->vfs_super->s_bdev);
- xfs_log_force(ip->i_mount, (xfs_lsn_t)0, XFS_LOG_FORCE|XFS_LOG_SYNC);
-}
-
-int
-xfs_blkdev_get(
- xfs_mount_t *mp,
- const char *name,
- struct block_device **bdevp)
-{
- int error = 0;
-
- *bdevp = open_bdev_excl(name, 0, mp);
- if (IS_ERR(*bdevp)) {
- error = PTR_ERR(*bdevp);
- printk("XFS: Invalid device [%s], error=%d\n", name, error);
- }
-
- return -error;
-}
-
-void
-xfs_blkdev_put(
- struct block_device *bdev)
-{
- if (bdev)
- close_bdev_excl(bdev);
-}
-
-
-STATIC struct inode *
-linvfs_alloc_inode(
- struct super_block *sb)
-{
- vnode_t *vp;
-
- vp = (vnode_t *)kmem_cache_alloc(linvfs_inode_cachep,
- kmem_flags_convert(KM_SLEEP));
- if (!vp)
- return NULL;
- return LINVFS_GET_IP(vp);
-}
-
-STATIC void
-linvfs_destroy_inode(
- struct inode *inode)
-{
- kmem_cache_free(linvfs_inode_cachep, LINVFS_GET_VP(inode));
-}
-
-STATIC void
-init_once(
- void *data,
- kmem_cache_t *cachep,
- unsigned long flags)
-{
- vnode_t *vp = (vnode_t *)data;
-
- if ((flags & (SLAB_CTOR_VERIFY|SLAB_CTOR_CONSTRUCTOR)) ==
- SLAB_CTOR_CONSTRUCTOR)
- inode_init_once(LINVFS_GET_IP(vp));
-}
-
-STATIC int
-init_inodecache( void )
-{
- linvfs_inode_cachep = kmem_cache_create("linvfs_icache",
- sizeof(vnode_t), 0,
- SLAB_HWCACHE_ALIGN|SLAB_RECLAIM_ACCOUNT,
- init_once, NULL);
-
- if (linvfs_inode_cachep == NULL)
- return -ENOMEM;
- return 0;
-}
-
-STATIC void
-destroy_inodecache( void )
-{
- if (kmem_cache_destroy(linvfs_inode_cachep))
- printk(KERN_WARNING "%s: cache still in use!\n", __FUNCTION__);
-}
-
-/*
- * Attempt to flush the inode, this will actually fail
- * if the inode is pinned, but we dirty the inode again
- * at the point when it is unpinned after a log write,
- * since this is when the inode itself becomes flushable.
- */
-STATIC void
-linvfs_write_inode(
- struct inode *inode,
- int sync)
-{
- vnode_t *vp = LINVFS_GET_VP(inode);
- int error, flags = FLUSH_INODE;
-
- if (vp) {
- vn_trace_entry(vp, __FUNCTION__, (inst_t *)__return_address);
- if (sync)
- flags |= FLUSH_SYNC;
- VOP_IFLUSH(vp, flags, error);
- }
-}
-
-STATIC void
-linvfs_clear_inode(
- struct inode *inode)
-{
- vnode_t *vp = LINVFS_GET_VP(inode);
-
- if (vp) {
- vn_rele(vp);
- vn_trace_entry(vp, __FUNCTION__, (inst_t *)__return_address);
- /*
- * Do all our cleanup, and remove this vnode.
- */
- vn_remove(vp);
- }
-}
-
-
-#define SYNCD_FLAGS (SYNC_FSDATA|SYNC_BDFLUSH|SYNC_ATTR)
-
-STATIC int
-xfssyncd(
- void *arg)
-{
- vfs_t *vfsp = (vfs_t *) arg;
- int error;
-
- daemonize("xfssyncd");
-
- vfsp->vfs_sync_task = current;
- wmb();
- wake_up(&vfsp->vfs_wait_sync_task);
-
- for (;;) {
- set_current_state(TASK_INTERRUPTIBLE);
- schedule_timeout(xfs_syncd_interval);
- /* swsusp */
- if (current->flags & PF_FREEZE)
- refrigerator(PF_FREEZE);
- if (vfsp->vfs_flag & VFS_UMOUNT)
- break;
- if (vfsp->vfs_flag & VFS_RDONLY)
- continue;
- VFS_SYNC(vfsp, SYNCD_FLAGS, NULL, error);
- }
-
- vfsp->vfs_sync_task = NULL;
- wmb();
- wake_up(&vfsp->vfs_wait_sync_task);
-
- return 0;
-}
-
-STATIC int
-linvfs_start_syncd(
- vfs_t *vfsp)
-{
- int pid;
-
- pid = kernel_thread(xfssyncd, (void *) vfsp,
- CLONE_VM | CLONE_FS | CLONE_FILES);
- if (pid < 0)
- return -pid;
- wait_event(vfsp->vfs_wait_sync_task, vfsp->vfs_sync_task);
- return 0;
-}
-
-STATIC void
-linvfs_stop_syncd(
- vfs_t *vfsp)
-{
- vfsp->vfs_flag |= VFS_UMOUNT;
- wmb();
-
- wake_up_process(vfsp->vfs_sync_task);
- wait_event(vfsp->vfs_wait_sync_task, !vfsp->vfs_sync_task);
-}
-
-STATIC void
-linvfs_put_super(
- struct super_block *sb)
-{
- vfs_t *vfsp = LINVFS_GET_VFS(sb);
- int error;
-
- linvfs_stop_syncd(vfsp);
- VFS_SYNC(vfsp, SYNC_ATTR|SYNC_DELWRI, NULL, error);
- if (!error)
- VFS_UNMOUNT(vfsp, 0, NULL, error);
- if (error) {
- printk("XFS unmount got error %d\n", error);
- printk("%s: vfsp/0x%p left dangling!\n", __FUNCTION__, vfsp);
- return;
- }
-
- vfs_deallocate(vfsp);
-}
-
-STATIC void
-linvfs_write_super(
- struct super_block *sb)
-{
- vfs_t *vfsp = LINVFS_GET_VFS(sb);
- int error;
-
- if (sb->s_flags & MS_RDONLY) {
- sb->s_dirt = 0; /* paranoia */
- return;
- }
- /* Push the log and superblock a little */
- VFS_SYNC(vfsp, SYNC_FSDATA, NULL, error);
- sb->s_dirt = 0;
-}
-
-STATIC int
-linvfs_sync_super(
- struct super_block *sb,
- int wait)
-{
- vfs_t *vfsp = LINVFS_GET_VFS(sb);
- int error;
- int flags = SYNC_FSDATA;
-
- if (wait)
- flags |= SYNC_WAIT;
-
- VFS_SYNC(vfsp, flags, NULL, error);
- sb->s_dirt = 0;
-
- return -error;
-}
-
-STATIC int
-linvfs_statfs(
- struct super_block *sb,
- struct kstatfs *statp)
-{
- vfs_t *vfsp = LINVFS_GET_VFS(sb);
- int error;
-
- VFS_STATVFS(vfsp, statp, NULL, error);
- return -error;
-}
-
-STATIC int
-linvfs_remount(
- struct super_block *sb,
- int *flags,
- char *options)
-{
- vfs_t *vfsp = LINVFS_GET_VFS(sb);
- struct xfs_mount_args *args = xfs_args_allocate(sb);
- int error;
-
- VFS_PARSEARGS(vfsp, options, args, 1, error);
- if (!error)
- VFS_MNTUPDATE(vfsp, flags, args, error);
- kmem_free(args, sizeof(*args));
- return -error;
-}
-
-STATIC void
-linvfs_freeze_fs(
- struct super_block *sb)
-{
- VFS_FREEZE(LINVFS_GET_VFS(sb));
-}
-
-STATIC struct dentry *
-linvfs_get_parent(
- struct dentry *child)
-{
- int error;
- vnode_t *vp, *cvp;
- struct dentry *parent;
- struct inode *ip = NULL;
- struct dentry dotdot;
-
- dotdot.d_name.name = "..";
- dotdot.d_name.len = 2;
- dotdot.d_inode = 0;
-
- cvp = NULL;
- vp = LINVFS_GET_VP(child->d_inode);
- VOP_LOOKUP(vp, &dotdot, &cvp, 0, NULL, NULL, error);
-
- if (!error) {
- ASSERT(cvp);
- ip = LINVFS_GET_IP(cvp);
- if (!ip) {
- VN_RELE(cvp);
- return ERR_PTR(-EACCES);
- }
- }
- if (error)
- return ERR_PTR(-error);
- parent = d_alloc_anon(ip);
- if (!parent) {
- VN_RELE(cvp);
- parent = ERR_PTR(-ENOMEM);
- }
- return parent;
-}
-
-STATIC struct dentry *
-linvfs_get_dentry(
- struct super_block *sb,
- void *data)
-{
- vnode_t *vp;
- struct inode *inode;
- struct dentry *result;
- xfs_fid2_t xfid;
- vfs_t *vfsp = LINVFS_GET_VFS(sb);
- int error;
-
- xfid.fid_len = sizeof(xfs_fid2_t) - sizeof(xfid.fid_len);
- xfid.fid_pad = 0;
- xfid.fid_gen = ((__u32 *)data)[1];
- xfid.fid_ino = ((__u32 *)data)[0];
-
- VFS_VGET(vfsp, &vp, (fid_t *)&xfid, error);
- if (error || vp == NULL)
- return ERR_PTR(-ESTALE) ;
-
- inode = LINVFS_GET_IP(vp);
- result = d_alloc_anon(inode);
- if (!result) {
- iput(inode);
- return ERR_PTR(-ENOMEM);
- }
- return result;
-}
-
-STATIC int
-linvfs_show_options(
- struct seq_file *m,
- struct vfsmount *mnt)
-{
- struct vfs *vfsp = LINVFS_GET_VFS(mnt->mnt_sb);
- int error;
-
- VFS_SHOWARGS(vfsp, m, error);
- return error;
-}
-
-STATIC int
-linvfs_getxstate(
- struct super_block *sb,
- struct fs_quota_stat *fqs)
-{
- struct vfs *vfsp = LINVFS_GET_VFS(sb);
- int error;
-
- VFS_QUOTACTL(vfsp, Q_XGETQSTAT, 0, (caddr_t)fqs, error);
- return -error;
-}
-
-STATIC int
-linvfs_setxstate(
- struct super_block *sb,
- unsigned int flags,
- int op)
-{
- struct vfs *vfsp = LINVFS_GET_VFS(sb);
- int error;
-
- VFS_QUOTACTL(vfsp, op, 0, (caddr_t)&flags, error);
- return -error;
-}
-
-STATIC int
-linvfs_getxquota(
- struct super_block *sb,
- int type,
- qid_t id,
- struct fs_disk_quota *fdq)
-{
- struct vfs *vfsp = LINVFS_GET_VFS(sb);
- int error, getmode;
-
- getmode = (type == GRPQUOTA) ? Q_XGETGQUOTA : Q_XGETQUOTA;
- VFS_QUOTACTL(vfsp, getmode, id, (caddr_t)fdq, error);
- return -error;
-}
-
-STATIC int
-linvfs_setxquota(
- struct super_block *sb,
- int type,
- qid_t id,
- struct fs_disk_quota *fdq)
-{
- struct vfs *vfsp = LINVFS_GET_VFS(sb);
- int error, setmode;
-
- setmode = (type == GRPQUOTA) ? Q_XSETGQLIM : Q_XSETQLIM;
- VFS_QUOTACTL(vfsp, setmode, id, (caddr_t)fdq, error);
- return -error;
-}
-
-STATIC int
-linvfs_fill_super(
- struct super_block *sb,
- void *data,
- int silent)
-{
- vnode_t *rootvp;
- struct vfs *vfsp = vfs_allocate();
- struct xfs_mount_args *args = xfs_args_allocate(sb);
- struct kstatfs statvfs;
- int error, error2;
-
- vfsp->vfs_super = sb;
- LINVFS_SET_VFS(sb, vfsp);
- if (sb->s_flags & MS_RDONLY)
- vfsp->vfs_flag |= VFS_RDONLY;
- bhv_insert_all_vfsops(vfsp);
-
- VFS_PARSEARGS(vfsp, (char *)data, args, 0, error);
- if (error) {
- bhv_remove_all_vfsops(vfsp, 1);
- goto fail_vfsop;
- }
-
- sb_min_blocksize(sb, BBSIZE);
- sb->s_export_op = &linvfs_export_ops;
- sb->s_qcop = &linvfs_qops;
- sb->s_op = &linvfs_sops;
-
- VFS_MOUNT(vfsp, args, NULL, error);
- if (error) {
- bhv_remove_all_vfsops(vfsp, 1);
- goto fail_vfsop;
- }
-
- VFS_STATVFS(vfsp, &statvfs, NULL, error);
- if (error)
- goto fail_unmount;
-
- sb->s_dirt = 1;
- sb->s_magic = statvfs.f_type;
- sb->s_blocksize = statvfs.f_bsize;
- sb->s_blocksize_bits = ffs(statvfs.f_bsize) - 1;
- sb->s_maxbytes = xfs_max_file_offset(sb->s_blocksize_bits);
- set_posix_acl_flag(sb);
-
- VFS_ROOT(vfsp, &rootvp, error);
- if (error)
- goto fail_unmount;
-
- sb->s_root = d_alloc_root(LINVFS_GET_IP(rootvp));
- if (!sb->s_root) {
- error = ENOMEM;
- goto fail_vnrele;
- }
- if (is_bad_inode(sb->s_root->d_inode)) {
- error = EINVAL;
- goto fail_vnrele;
- }
- if ((error = linvfs_start_syncd(vfsp)))
- goto fail_vnrele;
- vn_trace_exit(rootvp, __FUNCTION__, (inst_t *)__return_address);
-
- kmem_free(args, sizeof(*args));
- return 0;
-
-fail_vnrele:
- if (sb->s_root) {
- dput(sb->s_root);
- sb->s_root = NULL;
- } else {
- VN_RELE(rootvp);
- }
-
-fail_unmount:
- VFS_UNMOUNT(vfsp, 0, NULL, error2);
-
-fail_vfsop:
- vfs_deallocate(vfsp);
- kmem_free(args, sizeof(*args));
- return -error;
-}
-
-STATIC struct super_block *
-linvfs_get_sb(
- struct file_system_type *fs_type,
- int flags,
- const char *dev_name,
- void *data)
-{
- return get_sb_bdev(fs_type, flags, dev_name, data, linvfs_fill_super);
-}
-
-
-STATIC struct export_operations linvfs_export_ops = {
- .get_parent = linvfs_get_parent,
- .get_dentry = linvfs_get_dentry,
-};
-
-STATIC struct super_operations linvfs_sops = {
- .alloc_inode = linvfs_alloc_inode,
- .destroy_inode = linvfs_destroy_inode,
- .write_inode = linvfs_write_inode,
- .clear_inode = linvfs_clear_inode,
- .put_super = linvfs_put_super,
- .write_super = linvfs_write_super,
- .sync_fs = linvfs_sync_super,
- .write_super_lockfs = linvfs_freeze_fs,
- .statfs = linvfs_statfs,
- .remount_fs = linvfs_remount,
- .show_options = linvfs_show_options,
-};
-
-STATIC struct quotactl_ops linvfs_qops = {
- .get_xstate = linvfs_getxstate,
- .set_xstate = linvfs_setxstate,
- .get_xquota = linvfs_getxquota,
- .set_xquota = linvfs_setxquota,
-};
-
-STATIC struct file_system_type xfs_fs_type = {
- .owner = THIS_MODULE,
- .name = "xfs",
- .get_sb = linvfs_get_sb,
- .kill_sb = kill_block_super,
- .fs_flags = FS_REQUIRES_DEV,
-};
-
-
-STATIC int __init
-init_xfs_fs( void )
-{
- int error;
- struct sysinfo si;
- static char message[] __initdata = KERN_INFO \
- XFS_VERSION_STRING " with " XFS_BUILD_OPTIONS " enabled\n";
-
- printk(message);
-
- si_meminfo(&si);
- xfs_physmem = si.totalram;
-
- ktrace_init(64);
-
- error = init_inodecache();
- if (error < 0)
- goto undo_inodecache;
-
- error = pagebuf_init();
- if (error < 0)
- goto undo_pagebuf;
-
- vn_init();
- xfs_init();
- uuid_init();
- vfs_initdmapi();
- vfs_initquota();
-
- error = register_filesystem(&xfs_fs_type);
- if (error)
- goto undo_register;
- return 0;
-
-undo_register:
- pagebuf_terminate();
-
-undo_pagebuf:
- destroy_inodecache();
-
-undo_inodecache:
- return error;
-}
-
-STATIC void __exit
-exit_xfs_fs( void )
-{
- vfs_exitquota();
- vfs_exitdmapi();
- unregister_filesystem(&xfs_fs_type);
- xfs_cleanup();
- pagebuf_terminate();
- destroy_inodecache();
- ktrace_uninit();
-}
-
-module_init(init_xfs_fs);
-module_exit(exit_xfs_fs);
-
-MODULE_AUTHOR("Silicon Graphics, Inc.");
-MODULE_DESCRIPTION(XFS_VERSION_STRING " with " XFS_BUILD_OPTIONS " enabled");
-MODULE_LICENSE("GPL");
+++ /dev/null
-/*
- * Copyright (c) 2000-2003 Silicon Graphics, Inc. All Rights Reserved.
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of version 2 of the GNU General Public License as
- * published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it would be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
- *
- * Further, this software is distributed without any warranty that it is
- * free of the rightful claim of any third person regarding infringement
- * or the like. Any license provided herein, whether implied or
- * otherwise, applies only to this software file. Patent licenses, if
- * any, provided herein do not apply to combinations of this program with
- * other software, or any other product whatsoever.
- *
- * You should have received a copy of the GNU General Public License along
- * with this program; if not, write the Free Software Foundation, Inc., 59
- * Temple Place - Suite 330, Boston MA 02111-1307, USA.
- *
- * Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy,
- * Mountain View, CA 94043, or:
- *
- * http://www.sgi.com
- *
- * For further information regarding this notice, see:
- *
- * http://oss.sgi.com/projects/GenInfo/SGIGPLNoticeExplan/
- */
-#ifndef __XFS_SUPER_H__
-#define __XFS_SUPER_H__
-
-#ifdef CONFIG_XFS_DMAPI
-# define vfs_insertdmapi(vfs) vfs_insertops(vfsp, &xfs_dmops)
-# define vfs_initdmapi() dmapi_init()
-# define vfs_exitdmapi() dmapi_uninit()
-#else
-# define vfs_insertdmapi(vfs) do { } while (0)
-# define vfs_initdmapi() do { } while (0)
-# define vfs_exitdmapi() do { } while (0)
-#endif
-
-#ifdef CONFIG_XFS_QUOTA
-# define vfs_insertquota(vfs) vfs_insertops(vfsp, &xfs_qmops)
-extern void xfs_qm_init(void);
-extern void xfs_qm_exit(void);
-# define vfs_initquota() xfs_qm_init()
-# define vfs_exitquota() xfs_qm_exit()
-#else
-# define vfs_insertquota(vfs) do { } while (0)
-# define vfs_initquota() do { } while (0)
-# define vfs_exitquota() do { } while (0)
-#endif
-
-#ifdef CONFIG_XFS_POSIX_ACL
-# define XFS_ACL_STRING "ACLs, "
-# define set_posix_acl_flag(sb) ((sb)->s_flags |= MS_POSIXACL)
-#else
-# define XFS_ACL_STRING
-# define set_posix_acl_flag(sb) do { } while (0)
-#endif
-
-#ifdef CONFIG_XFS_SECURITY
-# define XFS_SECURITY_STRING "security attributes, "
-# define ENOSECURITY 0
-#else
-# define XFS_SECURITY_STRING
-# define ENOSECURITY EOPNOTSUPP
-#endif
-
-#ifdef CONFIG_XFS_RT
-# define XFS_REALTIME_STRING "realtime, "
-#else
-# define XFS_REALTIME_STRING
-#endif
-
-#if XFS_BIG_BLKNOS
-# if XFS_BIG_INUMS
-# define XFS_BIGFS_STRING "large block/inode numbers, "
-# else
-# define XFS_BIGFS_STRING "large block numbers, "
-# endif
-#else
-# define XFS_BIGFS_STRING
-#endif
-
-#ifdef CONFIG_XFS_TRACE
-# define XFS_TRACE_STRING "tracing, "
-#else
-# define XFS_TRACE_STRING
-#endif
-
-#ifdef XFSDEBUG
-# define XFS_DBG_STRING "debug"
-#else
-# define XFS_DBG_STRING "no debug"
-#endif
-
-#define XFS_BUILD_OPTIONS XFS_ACL_STRING \
- XFS_SECURITY_STRING \
- XFS_REALTIME_STRING \
- XFS_BIGFS_STRING \
- XFS_TRACE_STRING \
- XFS_DBG_STRING /* DBG must be last */
-
-#define LINVFS_GET_VFS(s) \
- (vfs_t *)((s)->s_fs_info)
-#define LINVFS_SET_VFS(s, vfsp) \
- ((s)->s_fs_info = vfsp)
-
-struct xfs_inode;
-struct xfs_mount;
-struct xfs_buftarg;
-struct block_device;
-
-extern __uint64_t xfs_max_file_offset(unsigned int);
-
-extern void xfs_initialize_vnode(bhv_desc_t *, vnode_t *, bhv_desc_t *, int);
-
-extern void xfs_flush_inode(struct xfs_inode *);
-extern void xfs_flush_device(struct xfs_inode *);
-
-extern int xfs_blkdev_get(struct xfs_mount *, const char *,
- struct block_device **);
-extern void xfs_blkdev_put(struct block_device *);
-
-#endif /* __XFS_SUPER_H__ */
+++ /dev/null
-/*
- * Copyright (c) 2001-2002 Silicon Graphics, Inc. All Rights Reserved.
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of version 2 of the GNU General Public License as
- * published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it would be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
- *
- * Further, this software is distributed without any warranty that it is
- * free of the rightful claim of any third person regarding infringement
- * or the like. Any license provided herein, whether implied or
- * otherwise, applies only to this software file. Patent licenses, if
- * any, provided herein do not apply to combinations of this program with
- * other software, or any other product whatsoever.
- *
- * You should have received a copy of the GNU General Public License along
- * with this program; if not, write the Free Software Foundation, Inc., 59
- * Temple Place - Suite 330, Boston MA 02111-1307, USA.
- *
- * Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy,
- * Mountain View, CA 94043, or:
- *
- * http://www.sgi.com
- *
- * For further information regarding this notice, see:
- *
- * http://oss.sgi.com/projects/GenInfo/SGIGPLNoticeExplan/
- */
-
-#include "xfs.h"
-#include "xfs_rw.h"
-#include <linux/sysctl.h>
-#include <linux/proc_fs.h>
-
-
-static struct ctl_table_header *xfs_table_header;
-
-
-#ifdef CONFIG_PROC_FS
-STATIC int
-xfs_stats_clear_proc_handler(
- ctl_table *ctl,
- int write,
- struct file *filp,
- void *buffer,
- size_t *lenp)
-{
- int c, ret, *valp = ctl->data;
- __uint32_t vn_active;
-
- ret = proc_dointvec_minmax(ctl, write, filp, buffer, lenp);
-
- if (!ret && write && *valp) {
- printk("XFS Clearing xfsstats\n");
- for (c = 0; c < NR_CPUS; c++) {
- if (!cpu_possible(c)) continue;
- preempt_disable();
- /* save vn_active, it's a universal truth! */
- vn_active = per_cpu(xfsstats, c).vn_active;
- memset(&per_cpu(xfsstats, c), 0,
- sizeof(struct xfsstats));
- per_cpu(xfsstats, c).vn_active = vn_active;
- preempt_enable();
- }
- xfs_stats_clear = 0;
- }
-
- return ret;
-}
-#endif /* CONFIG_PROC_FS */
-
-STATIC ctl_table xfs_table[] = {
- {XFS_RESTRICT_CHOWN, "restrict_chown", &xfs_params.restrict_chown.val,
- sizeof(int), 0644, NULL, &proc_dointvec_minmax,
- &sysctl_intvec, NULL,
- &xfs_params.restrict_chown.min, &xfs_params.restrict_chown.max},
-
- {XFS_SGID_INHERIT, "irix_sgid_inherit", &xfs_params.sgid_inherit.val,
- sizeof(int), 0644, NULL, &proc_dointvec_minmax,
- &sysctl_intvec, NULL,
- &xfs_params.sgid_inherit.min, &xfs_params.sgid_inherit.max},
-
- {XFS_SYMLINK_MODE, "irix_symlink_mode", &xfs_params.symlink_mode.val,
- sizeof(int), 0644, NULL, &proc_dointvec_minmax,
- &sysctl_intvec, NULL,
- &xfs_params.symlink_mode.min, &xfs_params.symlink_mode.max},
-
- {XFS_PANIC_MASK, "panic_mask", &xfs_params.panic_mask.val,
- sizeof(int), 0644, NULL, &proc_dointvec_minmax,
- &sysctl_intvec, NULL,
- &xfs_params.panic_mask.min, &xfs_params.panic_mask.max},
-
- {XFS_ERRLEVEL, "error_level", &xfs_params.error_level.val,
- sizeof(int), 0644, NULL, &proc_dointvec_minmax,
- &sysctl_intvec, NULL,
- &xfs_params.error_level.min, &xfs_params.error_level.max},
-
- {XFS_SYNC_INTERVAL, "sync_interval", &xfs_params.sync_interval.val,
- sizeof(int), 0644, NULL, &proc_dointvec_minmax,
- &sysctl_intvec, NULL,
- &xfs_params.sync_interval.min, &xfs_params.sync_interval.max},
-
- {XFS_INHERIT_SYNC, "inherit_sync", &xfs_params.inherit_sync.val,
- sizeof(int), 0644, NULL, &proc_dointvec_minmax,
- &sysctl_intvec, NULL,
- &xfs_params.inherit_sync.min, &xfs_params.inherit_sync.max},
-
- {XFS_INHERIT_NODUMP, "inherit_nodump", &xfs_params.inherit_nodump.val,
- sizeof(int), 0644, NULL, &proc_dointvec_minmax,
- &sysctl_intvec, NULL,
- &xfs_params.inherit_nodump.min, &xfs_params.inherit_nodump.max},
-
- {XFS_INHERIT_NOATIME, "inherit_noatime", &xfs_params.inherit_noatim.val,
- sizeof(int), 0644, NULL, &proc_dointvec_minmax,
- &sysctl_intvec, NULL,
- &xfs_params.inherit_noatim.min, &xfs_params.inherit_noatim.max},
-
- {XFS_FLUSH_INTERVAL, "flush_interval", &xfs_params.flush_interval.val,
- sizeof(int), 0644, NULL, &proc_dointvec_minmax,
- &sysctl_intvec, NULL,
- &xfs_params.flush_interval.min, &xfs_params.flush_interval.max},
-
- {XFS_AGE_BUFFER, "age_buffer", &xfs_params.age_buffer.val,
- sizeof(int), 0644, NULL, &proc_dointvec_minmax,
- &sysctl_intvec, NULL,
- &xfs_params.age_buffer.min, &xfs_params.age_buffer.max},
-
- /* please keep this the last entry */
-#ifdef CONFIG_PROC_FS
- {XFS_STATS_CLEAR, "stats_clear", &xfs_params.stats_clear.val,
- sizeof(int), 0644, NULL, &xfs_stats_clear_proc_handler,
- &sysctl_intvec, NULL,
- &xfs_params.stats_clear.min, &xfs_params.stats_clear.max},
-#endif /* CONFIG_PROC_FS */
-
- {0}
-};
-
-STATIC ctl_table xfs_dir_table[] = {
- {FS_XFS, "xfs", NULL, 0, 0555, xfs_table},
- {0}
-};
-
-STATIC ctl_table xfs_root_table[] = {
- {CTL_FS, "fs", NULL, 0, 0555, xfs_dir_table},
- {0}
-};
-
-void
-xfs_sysctl_register(void)
-{
- xfs_table_header = register_sysctl_table(xfs_root_table, 1);
-}
-
-void
-xfs_sysctl_unregister(void)
-{
- if (xfs_table_header)
- unregister_sysctl_table(xfs_table_header);
-}
+++ /dev/null
-/*
- * Copyright (c) 2001-2002 Silicon Graphics, Inc. All Rights Reserved.
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of version 2 of the GNU General Public License as
- * published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it would be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
- *
- * Further, this software is distributed without any warranty that it is
- * free of the rightful claim of any third person regarding infringement
- * or the like. Any license provided herein, whether implied or
- * otherwise, applies only to this software file. Patent licenses, if
- * any, provided herein do not apply to combinations of this program with
- * other software, or any other product whatsoever.
- *
- * You should have received a copy of the GNU General Public License along
- * with this program; if not, write the Free Software Foundation, Inc., 59
- * Temple Place - Suite 330, Boston MA 02111-1307, USA.
- *
- * Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy,
- * Mountain View, CA 94043, or:
- *
- * http://www.sgi.com
- *
- * For further information regarding this notice, see:
- *
- * http://oss.sgi.com/projects/GenInfo/SGIGPLNoticeExplan/
- */
-
-#ifndef __XFS_SYSCTL_H__
-#define __XFS_SYSCTL_H__
-
-#include <linux/sysctl.h>
-
-/*
- * Tunable xfs parameters
- */
-
-typedef struct xfs_sysctl_val {
- int min;
- int val;
- int max;
-} xfs_sysctl_val_t;
-
-typedef struct xfs_param {
- xfs_sysctl_val_t restrict_chown;/* Root/non-root can give away files.*/
- xfs_sysctl_val_t sgid_inherit; /* Inherit S_ISGID bit if process' GID
- * is not a member of the parent dir
- * GID */
- xfs_sysctl_val_t symlink_mode; /* Link creat mode affected by umask */
- xfs_sysctl_val_t panic_mask; /* bitmask to cause panic on errors. */
- xfs_sysctl_val_t error_level; /* Degree of reporting for problems */
- xfs_sysctl_val_t sync_interval; /* time between sync calls */
- xfs_sysctl_val_t stats_clear; /* Reset all XFS statistics to zero. */
- xfs_sysctl_val_t inherit_sync; /* Inherit the "sync" inode flag. */
- xfs_sysctl_val_t inherit_nodump;/* Inherit the "nodump" inode flag. */
- xfs_sysctl_val_t inherit_noatim;/* Inherit the "noatime" inode flag. */
- xfs_sysctl_val_t flush_interval;/* interval between runs of the
- * delwri flush daemon. */
- xfs_sysctl_val_t age_buffer; /* time for buffer to age before
- * we flush it. */
-} xfs_param_t;
-
-/*
- * xfs_error_level:
- *
- * How much error reporting will be done when internal problems are
- * encountered. These problems normally return an EFSCORRUPTED to their
- * caller, with no other information reported.
- *
- * 0 No error reports
- * 1 Report EFSCORRUPTED errors that will cause a filesystem shutdown
- * 5 Report all EFSCORRUPTED errors (all of the above errors, plus any
- * additional errors that are known to not cause shutdowns)
- *
- * xfs_panic_mask bit 0x8 turns the error reports into panics
- */
-
-enum {
- XFS_RESTRICT_CHOWN = 3,
- XFS_SGID_INHERIT = 4,
- XFS_SYMLINK_MODE = 5,
- XFS_PANIC_MASK = 6,
- XFS_ERRLEVEL = 7,
- XFS_SYNC_INTERVAL = 8,
- XFS_STATS_CLEAR = 12,
- XFS_INHERIT_SYNC = 13,
- XFS_INHERIT_NODUMP = 14,
- XFS_INHERIT_NOATIME = 15,
- XFS_FLUSH_INTERVAL = 16,
- XFS_AGE_BUFFER = 17,
-};
-
-extern xfs_param_t xfs_params;
-
-#ifdef CONFIG_SYSCTL
-extern void xfs_sysctl_register(void);
-extern void xfs_sysctl_unregister(void);
-#else
-# define xfs_sysctl_register() do { } while (0)
-# define xfs_sysctl_unregister() do { } while (0)
-#endif /* CONFIG_SYSCTL */
-
-#endif /* __XFS_SYSCTL_H__ */
+++ /dev/null
-/*
- * Copyright (c) 2001-2002 Silicon Graphics, Inc. All Rights Reserved.
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of version 2 of the GNU General Public License as
- * published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it would be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
- *
- * Further, this software is distributed without any warranty that it is
- * free of the rightful claim of any third person regarding infringement
- * or the like. Any license provided herein, whether implied or
- * otherwise, applies only to this software file. Patent licenses, if
- * any, provided herein do not apply to combinations of this program with
- * other software, or any other product whatsoever.
- *
- * You should have received a copy of the GNU General Public License along
- * with this program; if not, write the Free Software Foundation, Inc., 59
- * Temple Place - Suite 330, Boston MA 02111-1307, USA.
- *
- * Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy,
- * Mountain View, CA 94043, or:
- *
- * http://www.sgi.com
- *
- * For further information regarding this notice, see:
- *
- * http://oss.sgi.com/projects/GenInfo/SGIGPLNoticeExplan/
- */
-
-/*
- * Dummy file that can contain a timestamp to put into the
- * XFS init string, to help users keep track of what they're
- * running
- */
-
-#ifndef __XFS_VERSION_H__
-#define __XFS_VERSION_H__
-
-#define XFS_VERSION_STRING "SGI XFS"
-
-#endif /* __XFS_VERSION_H__ */
+++ /dev/null
-/*
- * Copyright (c) 2000-2003 Silicon Graphics, Inc. All Rights Reserved.
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of version 2 of the GNU General Public License as
- * published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it would be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
- *
- * Further, this software is distributed without any warranty that it is
- * free of the rightful claim of any third person regarding infringement
- * or the like. Any license provided herein, whether implied or
- * otherwise, applies only to this software file. Patent licenses, if
- * any, provided herein do not apply to combinations of this program with
- * other software, or any other product whatsoever.
- *
- * You should have received a copy of the GNU General Public License along
- * with this program; if not, write the Free Software Foundation, Inc., 59
- * Temple Place - Suite 330, Boston MA 02111-1307, USA.
- *
- * Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy,
- * Mountain View, CA 94043, or:
- *
- * http://www.sgi.com
- *
- * For further information regarding this notice, see:
- *
- * http://oss.sgi.com/projects/GenInfo/SGIGPLNoticeExplan/
- */
-
-#include "xfs.h"
-#include "xfs_fs.h"
-#include "xfs_macros.h"
-#include "xfs_inum.h"
-#include "xfs_log.h"
-#include "xfs_clnt.h"
-#include "xfs_trans.h"
-#include "xfs_sb.h"
-#include "xfs_ag.h"
-#include "xfs_dir.h"
-#include "xfs_dir2.h"
-#include "xfs_imap.h"
-#include "xfs_alloc.h"
-#include "xfs_dmapi.h"
-#include "xfs_mount.h"
-#include "xfs_quota.h"
-
-int
-vfs_mount(
- struct bhv_desc *bdp,
- struct xfs_mount_args *args,
- struct cred *cr)
-{
- struct bhv_desc *next = bdp;
-
- ASSERT(next);
- while (! (bhvtovfsops(next))->vfs_mount)
- next = BHV_NEXT(next);
- return ((*bhvtovfsops(next)->vfs_mount)(next, args, cr));
-}
-
-int
-vfs_parseargs(
- struct bhv_desc *bdp,
- char *s,
- struct xfs_mount_args *args,
- int f)
-{
- struct bhv_desc *next = bdp;
-
- ASSERT(next);
- while (! (bhvtovfsops(next))->vfs_parseargs)
- next = BHV_NEXT(next);
- return ((*bhvtovfsops(next)->vfs_parseargs)(next, s, args, f));
-}
-
-int
-vfs_showargs(
- struct bhv_desc *bdp,
- struct seq_file *m)
-{
- struct bhv_desc *next = bdp;
-
- ASSERT(next);
- while (! (bhvtovfsops(next))->vfs_showargs)
- next = BHV_NEXT(next);
- return ((*bhvtovfsops(next)->vfs_showargs)(next, m));
-}
-
-int
-vfs_unmount(
- struct bhv_desc *bdp,
- int fl,
- struct cred *cr)
-{
- struct bhv_desc *next = bdp;
-
- ASSERT(next);
- while (! (bhvtovfsops(next))->vfs_unmount)
- next = BHV_NEXT(next);
- return ((*bhvtovfsops(next)->vfs_unmount)(next, fl, cr));
-}
-
-int
-vfs_mntupdate(
- struct bhv_desc *bdp,
- int *fl,
- struct xfs_mount_args *args)
-{
- struct bhv_desc *next = bdp;
-
- ASSERT(next);
- while (! (bhvtovfsops(next))->vfs_mntupdate)
- next = BHV_NEXT(next);
- return ((*bhvtovfsops(next)->vfs_mntupdate)(next, fl, args));
-}
-
-int
-vfs_root(
- struct bhv_desc *bdp,
- struct vnode **vpp)
-{
- struct bhv_desc *next = bdp;
-
- ASSERT(next);
- while (! (bhvtovfsops(next))->vfs_root)
- next = BHV_NEXT(next);
- return ((*bhvtovfsops(next)->vfs_root)(next, vpp));
-}
-
-int
-vfs_statvfs(
- struct bhv_desc *bdp,
- xfs_statfs_t *sp,
- struct vnode *vp)
-{
- struct bhv_desc *next = bdp;
-
- ASSERT(next);
- while (! (bhvtovfsops(next))->vfs_statvfs)
- next = BHV_NEXT(next);
- return ((*bhvtovfsops(next)->vfs_statvfs)(next, sp, vp));
-}
-
-int
-vfs_sync(
- struct bhv_desc *bdp,
- int fl,
- struct cred *cr)
-{
- struct bhv_desc *next = bdp;
-
- ASSERT(next);
- while (! (bhvtovfsops(next))->vfs_sync)
- next = BHV_NEXT(next);
- return ((*bhvtovfsops(next)->vfs_sync)(next, fl, cr));
-}
-
-int
-vfs_vget(
- struct bhv_desc *bdp,
- struct vnode **vpp,
- struct fid *fidp)
-{
- struct bhv_desc *next = bdp;
-
- ASSERT(next);
- while (! (bhvtovfsops(next))->vfs_vget)
- next = BHV_NEXT(next);
- return ((*bhvtovfsops(next)->vfs_vget)(next, vpp, fidp));
-}
-
-int
-vfs_dmapiops(
- struct bhv_desc *bdp,
- caddr_t addr)
-{
- struct bhv_desc *next = bdp;
-
- ASSERT(next);
- while (! (bhvtovfsops(next))->vfs_dmapiops)
- next = BHV_NEXT(next);
- return ((*bhvtovfsops(next)->vfs_dmapiops)(next, addr));
-}
-
-int
-vfs_quotactl(
- struct bhv_desc *bdp,
- int cmd,
- int id,
- caddr_t addr)
-{
- struct bhv_desc *next = bdp;
-
- ASSERT(next);
- while (! (bhvtovfsops(next))->vfs_quotactl)
- next = BHV_NEXT(next);
- return ((*bhvtovfsops(next)->vfs_quotactl)(next, cmd, id, addr));
-}
-
-void
-vfs_init_vnode(
- struct bhv_desc *bdp,
- struct vnode *vp,
- struct bhv_desc *bp,
- int unlock)
-{
- struct bhv_desc *next = bdp;
-
- ASSERT(next);
- while (! (bhvtovfsops(next))->vfs_init_vnode)
- next = BHV_NEXT(next);
- ((*bhvtovfsops(next)->vfs_init_vnode)(next, vp, bp, unlock));
-}
-
-void
-vfs_force_shutdown(
- struct bhv_desc *bdp,
- int fl,
- char *file,
- int line)
-{
- struct bhv_desc *next = bdp;
-
- ASSERT(next);
- while (! (bhvtovfsops(next))->vfs_force_shutdown)
- next = BHV_NEXT(next);
- ((*bhvtovfsops(next)->vfs_force_shutdown)(next, fl, file, line));
-}
-
-void
-vfs_freeze(
- struct bhv_desc *bdp)
-{
- struct bhv_desc *next = bdp;
-
- ASSERT(next);
- while (! (bhvtovfsops(next))->vfs_freeze)
- next = BHV_NEXT(next);
- ((*bhvtovfsops(next)->vfs_freeze)(next));
-}
-
-vfs_t *
-vfs_allocate( void )
-{
- struct vfs *vfsp;
-
- vfsp = kmem_zalloc(sizeof(vfs_t), KM_SLEEP);
- bhv_head_init(VFS_BHVHEAD(vfsp), "vfs");
- init_waitqueue_head(&vfsp->vfs_wait_sync_task);
- return vfsp;
-}
-
-void
-vfs_deallocate(
- struct vfs *vfsp)
-{
- bhv_head_destroy(VFS_BHVHEAD(vfsp));
- kmem_free(vfsp, sizeof(vfs_t));
-}
-
-void
-vfs_insertops(
- struct vfs *vfsp,
- struct bhv_vfsops *vfsops)
-{
- struct bhv_desc *bdp;
-
- bdp = kmem_alloc(sizeof(struct bhv_desc), KM_SLEEP);
- bhv_desc_init(bdp, NULL, vfsp, vfsops);
- bhv_insert(&vfsp->vfs_bh, bdp);
-}
-
-void
-vfs_insertbhv(
- struct vfs *vfsp,
- struct bhv_desc *bdp,
- struct vfsops *vfsops,
- void *mount)
-{
- bhv_desc_init(bdp, mount, vfsp, vfsops);
- bhv_insert_initial(&vfsp->vfs_bh, bdp);
-}
-
-void
-bhv_remove_vfsops(
- struct vfs *vfsp,
- int pos)
-{
- struct bhv_desc *bhv;
-
- bhv = bhv_lookup_range(&vfsp->vfs_bh, pos, pos);
- if (!bhv)
- return;
- bhv_remove(&vfsp->vfs_bh, bhv);
- kmem_free(bhv, sizeof(*bhv));
-}
-
-void
-bhv_remove_all_vfsops(
- struct vfs *vfsp,
- int freebase)
-{
- struct xfs_mount *mp;
-
- bhv_remove_vfsops(vfsp, VFS_POSITION_QM);
- bhv_remove_vfsops(vfsp, VFS_POSITION_DM);
- if (!freebase)
- return;
- mp = XFS_BHVTOM(bhv_lookup(VFS_BHVHEAD(vfsp), &xfs_vfsops));
- VFS_REMOVEBHV(vfsp, &mp->m_bhv);
- xfs_mount_free(mp, 0);
-}
-
-void
-bhv_insert_all_vfsops(
- struct vfs *vfsp)
-{
- struct xfs_mount *mp;
-
- mp = xfs_mount_init();
- vfs_insertbhv(vfsp, &mp->m_bhv, &xfs_vfsops, mp);
- vfs_insertdmapi(vfsp);
- vfs_insertquota(vfsp);
-}
+++ /dev/null
-/*
- * Copyright (c) 2000-2003 Silicon Graphics, Inc. All Rights Reserved.
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of version 2 of the GNU General Public License as
- * published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it would be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
- *
- * Further, this software is distributed without any warranty that it is
- * free of the rightful claim of any third person regarding infringement
- * or the like. Any license provided herein, whether implied or
- * otherwise, applies only to this software file. Patent licenses, if
- * any, provided herein do not apply to combinations of this program with
- * other software, or any other product whatsoever.
- *
- * You should have received a copy of the GNU General Public License along
- * with this program; if not, write the Free Software Foundation, Inc., 59
- * Temple Place - Suite 330, Boston MA 02111-1307, USA.
- *
- * Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy,
- * Mountain View, CA 94043, or:
- *
- * http://www.sgi.com
- *
- * For further information regarding this notice, see:
- *
- * http://oss.sgi.com/projects/GenInfo/SGIGPLNoticeExplan/
- */
-#ifndef __XFS_VFS_H__
-#define __XFS_VFS_H__
-
-#include <linux/vfs.h>
-#include "xfs_fs.h"
-
-struct fid;
-struct cred;
-struct vnode;
-struct kstatfs;
-struct seq_file;
-struct super_block;
-struct xfs_mount_args;
-
-typedef struct kstatfs xfs_statfs_t;
-
-typedef struct vfs {
- u_int vfs_flag; /* flags */
- xfs_fsid_t vfs_fsid; /* file system ID */
- xfs_fsid_t *vfs_altfsid; /* An ID fixed for life of FS */
- bhv_head_t vfs_bh; /* head of vfs behavior chain */
- struct super_block *vfs_super; /* Linux superblock structure */
- struct task_struct *vfs_sync_task;
- wait_queue_head_t vfs_wait_sync_task;
-} vfs_t;
-
-#define vfs_fbhv vfs_bh.bh_first /* 1st on vfs behavior chain */
-
-#define bhvtovfs(bdp) ( (struct vfs *)BHV_VOBJ(bdp) )
-#define bhvtovfsops(bdp) ( (struct vfsops *)BHV_OPS(bdp) )
-#define VFS_BHVHEAD(vfs) ( &(vfs)->vfs_bh )
-#define VFS_REMOVEBHV(vfs, bdp) ( bhv_remove(VFS_BHVHEAD(vfs), bdp) )
-
-#define VFS_POSITION_BASE BHV_POSITION_BASE /* chain bottom */
-#define VFS_POSITION_TOP BHV_POSITION_TOP /* chain top */
-#define VFS_POSITION_INVALID BHV_POSITION_INVALID /* invalid pos. num */
-
-typedef enum {
- VFS_BHV_UNKNOWN, /* not specified */
- VFS_BHV_XFS, /* xfs */
- VFS_BHV_DM, /* data migration */
- VFS_BHV_QM, /* quota manager */
- VFS_BHV_IO, /* IO path */
- VFS_BHV_END /* housekeeping end-of-range */
-} vfs_bhv_t;
-
-#define VFS_POSITION_XFS (BHV_POSITION_BASE)
-#define VFS_POSITION_DM (VFS_POSITION_BASE+10)
-#define VFS_POSITION_QM (VFS_POSITION_BASE+20)
-#define VFS_POSITION_IO (VFS_POSITION_BASE+30)
-
-#define VFS_RDONLY 0x0001 /* read-only vfs */
-#define VFS_GRPID 0x0002 /* group-ID assigned from directory */
-#define VFS_DMI 0x0004 /* filesystem has the DMI enabled */
-#define VFS_UMOUNT 0x0008 /* unmount in progress */
-#define VFS_END 0x0008 /* max flag */
-
-#define SYNC_ATTR 0x0001 /* sync attributes */
-#define SYNC_CLOSE 0x0002 /* close file system down */
-#define SYNC_DELWRI 0x0004 /* look at delayed writes */
-#define SYNC_WAIT 0x0008 /* wait for i/o to complete */
-#define SYNC_BDFLUSH 0x0010 /* BDFLUSH is calling -- don't block */
-#define SYNC_FSDATA 0x0020 /* flush fs data (e.g. superblocks) */
-#define SYNC_REFCACHE 0x0040 /* prune some of the nfs ref cache */
-#define SYNC_REMOUNT 0x0080 /* remount readonly, no dummy LRs */
-
-typedef int (*vfs_mount_t)(bhv_desc_t *,
- struct xfs_mount_args *, struct cred *);
-typedef int (*vfs_parseargs_t)(bhv_desc_t *, char *,
- struct xfs_mount_args *, int);
-typedef int (*vfs_showargs_t)(bhv_desc_t *, struct seq_file *);
-typedef int (*vfs_unmount_t)(bhv_desc_t *, int, struct cred *);
-typedef int (*vfs_mntupdate_t)(bhv_desc_t *, int *,
- struct xfs_mount_args *);
-typedef int (*vfs_root_t)(bhv_desc_t *, struct vnode **);
-typedef int (*vfs_statvfs_t)(bhv_desc_t *, xfs_statfs_t *, struct vnode *);
-typedef int (*vfs_sync_t)(bhv_desc_t *, int, struct cred *);
-typedef int (*vfs_vget_t)(bhv_desc_t *, struct vnode **, struct fid *);
-typedef int (*vfs_dmapiops_t)(bhv_desc_t *, caddr_t);
-typedef int (*vfs_quotactl_t)(bhv_desc_t *, int, int, caddr_t);
-typedef void (*vfs_init_vnode_t)(bhv_desc_t *,
- struct vnode *, bhv_desc_t *, int);
-typedef void (*vfs_force_shutdown_t)(bhv_desc_t *, int, char *, int);
-typedef void (*vfs_freeze_t)(bhv_desc_t *);
-
-typedef struct vfsops {
- bhv_position_t vf_position; /* behavior chain position */
- vfs_mount_t vfs_mount; /* mount file system */
- vfs_parseargs_t vfs_parseargs; /* parse mount options */
- vfs_showargs_t vfs_showargs; /* unparse mount options */
- vfs_unmount_t vfs_unmount; /* unmount file system */
- vfs_mntupdate_t vfs_mntupdate; /* update file system options */
- vfs_root_t vfs_root; /* get root vnode */
- vfs_statvfs_t vfs_statvfs; /* file system statistics */
- vfs_sync_t vfs_sync; /* flush files */
- vfs_vget_t vfs_vget; /* get vnode from fid */
- vfs_dmapiops_t vfs_dmapiops; /* data migration */
- vfs_quotactl_t vfs_quotactl; /* disk quota */
- vfs_init_vnode_t vfs_init_vnode; /* initialize a new vnode */
- vfs_force_shutdown_t vfs_force_shutdown; /* crash and burn */
- vfs_freeze_t vfs_freeze; /* freeze fs for snapshot */
-} vfsops_t;
-
-/*
- * VFS's. Operates on vfs structure pointers (starts at bhv head).
- */
-#define VHEAD(v) ((v)->vfs_fbhv)
-#define VFS_MOUNT(v, ma,cr, rv) ((rv) = vfs_mount(VHEAD(v), ma,cr))
-#define VFS_PARSEARGS(v, o,ma,f, rv) ((rv) = vfs_parseargs(VHEAD(v), o,ma,f))
-#define VFS_SHOWARGS(v, m, rv) ((rv) = vfs_showargs(VHEAD(v), m))
-#define VFS_UNMOUNT(v, f, cr, rv) ((rv) = vfs_unmount(VHEAD(v), f,cr))
-#define VFS_MNTUPDATE(v, fl, args, rv) ((rv) = vfs_mntupdate(VHEAD(v), fl, args))
-#define VFS_ROOT(v, vpp, rv) ((rv) = vfs_root(VHEAD(v), vpp))
-#define VFS_STATVFS(v, sp,vp, rv) ((rv) = vfs_statvfs(VHEAD(v), sp,vp))
-#define VFS_SYNC(v, flag,cr, rv) ((rv) = vfs_sync(VHEAD(v), flag,cr))
-#define VFS_VGET(v, vpp,fidp, rv) ((rv) = vfs_vget(VHEAD(v), vpp,fidp))
-#define VFS_DMAPIOPS(v, p, rv) ((rv) = vfs_dmapiops(VHEAD(v), p))
-#define VFS_QUOTACTL(v, c,id,p, rv) ((rv) = vfs_quotactl(VHEAD(v), c,id,p))
-#define VFS_INIT_VNODE(v, vp,b,ul) ( vfs_init_vnode(VHEAD(v), vp,b,ul) )
-#define VFS_FORCE_SHUTDOWN(v, fl,f,l) ( vfs_force_shutdown(VHEAD(v), fl,f,l) )
-#define VFS_FREEZE(v) ( vfs_freeze(VHEAD(v)) )
-
-/*
- * PVFS's. Operates on behavior descriptor pointers.
- */
-#define PVFS_MOUNT(b, ma,cr, rv) ((rv) = vfs_mount(b, ma,cr))
-#define PVFS_PARSEARGS(b, o,ma,f, rv) ((rv) = vfs_parseargs(b, o,ma,f))
-#define PVFS_SHOWARGS(b, m, rv) ((rv) = vfs_showargs(b, m))
-#define PVFS_UNMOUNT(b, f,cr, rv) ((rv) = vfs_unmount(b, f,cr))
-#define PVFS_MNTUPDATE(b, fl, args, rv) ((rv) = vfs_mntupdate(b, fl, args))
-#define PVFS_ROOT(b, vpp, rv) ((rv) = vfs_root(b, vpp))
-#define PVFS_STATVFS(b, sp,vp, rv) ((rv) = vfs_statvfs(b, sp,vp))
-#define PVFS_SYNC(b, flag,cr, rv) ((rv) = vfs_sync(b, flag,cr))
-#define PVFS_VGET(b, vpp,fidp, rv) ((rv) = vfs_vget(b, vpp,fidp))
-#define PVFS_DMAPIOPS(b, p, rv) ((rv) = vfs_dmapiops(b, p))
-#define PVFS_QUOTACTL(b, c,id,p, rv) ((rv) = vfs_quotactl(b, c,id,p))
-#define PVFS_INIT_VNODE(b, vp,b2,ul) ( vfs_init_vnode(b, vp,b2,ul) )
-#define PVFS_FORCE_SHUTDOWN(b, fl,f,l) ( vfs_force_shutdown(b, fl,f,l) )
-#define PVFS_FREEZE(b) ( vfs_freeze(b) )
-
-extern int vfs_mount(bhv_desc_t *, struct xfs_mount_args *, struct cred *);
-extern int vfs_parseargs(bhv_desc_t *, char *, struct xfs_mount_args *, int);
-extern int vfs_showargs(bhv_desc_t *, struct seq_file *);
-extern int vfs_unmount(bhv_desc_t *, int, struct cred *);
-extern int vfs_mntupdate(bhv_desc_t *, int *, struct xfs_mount_args *);
-extern int vfs_root(bhv_desc_t *, struct vnode **);
-extern int vfs_statvfs(bhv_desc_t *, xfs_statfs_t *, struct vnode *);
-extern int vfs_sync(bhv_desc_t *, int, struct cred *);
-extern int vfs_vget(bhv_desc_t *, struct vnode **, struct fid *);
-extern int vfs_dmapiops(bhv_desc_t *, caddr_t);
-extern int vfs_quotactl(bhv_desc_t *, int, int, caddr_t);
-extern void vfs_init_vnode(bhv_desc_t *, struct vnode *, bhv_desc_t *, int);
-extern void vfs_force_shutdown(bhv_desc_t *, int, char *, int);
-extern void vfs_freeze(bhv_desc_t *);
-
-typedef struct bhv_vfsops {
- struct vfsops bhv_common;
- void * bhv_custom;
-} bhv_vfsops_t;
-
-#define vfs_bhv_lookup(v, id) ( bhv_lookup_range(&(v)->vfs_bh, (id), (id)) )
-#define vfs_bhv_custom(b) ( ((bhv_vfsops_t *)BHV_OPS(b))->bhv_custom )
-#define vfs_bhv_set_custom(b,o) ( (b)->bhv_custom = (void *)(o))
-#define vfs_bhv_clr_custom(b) ( (b)->bhv_custom = NULL )
-
-extern vfs_t *vfs_allocate(void);
-extern void vfs_deallocate(vfs_t *);
-extern void vfs_insertops(vfs_t *, bhv_vfsops_t *);
-extern void vfs_insertbhv(vfs_t *, bhv_desc_t *, vfsops_t *, void *);
-
-extern void bhv_insert_all_vfsops(struct vfs *);
-extern void bhv_remove_all_vfsops(struct vfs *, int);
-extern void bhv_remove_vfsops(struct vfs *, int);
-
-#endif /* __XFS_VFS_H__ */
+++ /dev/null
-/*
- * Copyright (c) 2000-2003 Silicon Graphics, Inc. All Rights Reserved.
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of version 2 of the GNU General Public License as
- * published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it would be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
- *
- * Further, this software is distributed without any warranty that it is
- * free of the rightful claim of any third person regarding infringement
- * or the like. Any license provided herein, whether implied or
- * otherwise, applies only to this software file. Patent licenses, if
- * any, provided herein do not apply to combinations of this program with
- * other software, or any other product whatsoever.
- *
- * You should have received a copy of the GNU General Public License along
- * with this program; if not, write the Free Software Foundation, Inc., 59
- * Temple Place - Suite 330, Boston MA 02111-1307, USA.
- *
- * Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy,
- * Mountain View, CA 94043, or:
- *
- * http://www.sgi.com
- *
- * For further information regarding this notice, see:
- *
- * http://oss.sgi.com/projects/GenInfo/SGIGPLNoticeExplan/
- */
-
-#include "xfs.h"
-
-
-uint64_t vn_generation; /* vnode generation number */
-spinlock_t vnumber_lock = SPIN_LOCK_UNLOCKED;
-
-/*
- * Dedicated vnode inactive/reclaim sync semaphores.
- * Prime number of hash buckets since address is used as the key.
- */
-#define NVSYNC 37
-#define vptosync(v) (&vsync[((unsigned long)v) % NVSYNC])
-sv_t vsync[NVSYNC];
-
-/*
- * Translate stat(2) file types to vnode types and vice versa.
- * Aware of numeric order of S_IFMT and vnode type values.
- */
-enum vtype iftovt_tab[] = {
- VNON, VFIFO, VCHR, VNON, VDIR, VNON, VBLK, VNON,
- VREG, VNON, VLNK, VNON, VSOCK, VNON, VNON, VNON
-};
-
-u_short vttoif_tab[] = {
- 0, S_IFREG, S_IFDIR, S_IFBLK, S_IFCHR, S_IFLNK, S_IFIFO, 0, S_IFSOCK
-};
-
-
-void
-vn_init(void)
-{
- register sv_t *svp;
- register int i;
-
- for (svp = vsync, i = 0; i < NVSYNC; i++, svp++)
- init_sv(svp, SV_DEFAULT, "vsy", i);
-}
-
-/*
- * Clean a vnode of filesystem-specific data and prepare it for reuse.
- */
-STATIC int
-vn_reclaim(
- struct vnode *vp)
-{
- int error;
-
- XFS_STATS_INC(vn_reclaim);
- vn_trace_entry(vp, "vn_reclaim", (inst_t *)__return_address);
-
- /*
- * Only make the VOP_RECLAIM call if there are behaviors
- * to call.
- */
- if (vp->v_fbhv) {
- VOP_RECLAIM(vp, error);
- if (error)
- return -error;
- }
- ASSERT(vp->v_fbhv == NULL);
-
- VN_LOCK(vp);
- vp->v_flag &= (VRECLM|VWAIT);
- VN_UNLOCK(vp, 0);
-
- vp->v_type = VNON;
- vp->v_fbhv = NULL;
-
-#ifdef XFS_VNODE_TRACE
- ktrace_free(vp->v_trace);
- vp->v_trace = NULL;
-#endif
-
- return 0;
-}
-
-STATIC void
-vn_wakeup(
- struct vnode *vp)
-{
- VN_LOCK(vp);
- if (vp->v_flag & VWAIT)
- sv_broadcast(vptosync(vp));
- vp->v_flag &= ~(VRECLM|VWAIT|VMODIFIED);
- VN_UNLOCK(vp, 0);
-}
-
-int
-vn_wait(
- struct vnode *vp)
-{
- VN_LOCK(vp);
- if (vp->v_flag & (VINACT | VRECLM)) {
- vp->v_flag |= VWAIT;
- sv_wait(vptosync(vp), PINOD, &vp->v_lock, 0);
- return 1;
- }
- VN_UNLOCK(vp, 0);
- return 0;
-}
-
-struct vnode *
-vn_initialize(
- struct inode *inode)
-{
- struct vnode *vp = LINVFS_GET_VP(inode);
-
- XFS_STATS_INC(vn_active);
- XFS_STATS_INC(vn_alloc);
-
- vp->v_flag = VMODIFIED;
- spinlock_init(&vp->v_lock, "v_lock");
-
- spin_lock(&vnumber_lock);
- if (!++vn_generation) /* v_number shouldn't be zero */
- vn_generation++;
- vp->v_number = vn_generation;
- spin_unlock(&vnumber_lock);
-
- ASSERT(VN_CACHED(vp) == 0);
-
- /* Initialize the first behavior and the behavior chain head. */
- vn_bhv_head_init(VN_BHV_HEAD(vp), "vnode");
-
-#ifdef XFS_VNODE_TRACE
- vp->v_trace = ktrace_alloc(VNODE_TRACE_SIZE, KM_SLEEP);
- printk("Allocated VNODE_TRACE at 0x%p\n", vp->v_trace);
-#endif /* XFS_VNODE_TRACE */
-
- vn_trace_exit(vp, "vn_initialize", (inst_t *)__return_address);
- return vp;
-}
-
-/*
- * Get a reference on a vnode.
- */
-vnode_t *
-vn_get(
- struct vnode *vp,
- vmap_t *vmap)
-{
- struct inode *inode;
-
- XFS_STATS_INC(vn_get);
- inode = LINVFS_GET_IP(vp);
- if (inode->i_state & I_FREEING)
- return NULL;
-
- inode = ilookup(vmap->v_vfsp->vfs_super, vmap->v_ino);
- if (!inode) /* Inode not present */
- return NULL;
-
- vn_trace_exit(vp, "vn_get", (inst_t *)__return_address);
-
- return vp;
-}
-
-/*
- * Revalidate the Linux inode from the vnode.
- */
-int
-vn_revalidate(
- struct vnode *vp)
-{
- struct inode *inode;
- vattr_t va;
- int error;
-
- vn_trace_entry(vp, "vn_revalidate", (inst_t *)__return_address);
- ASSERT(vp->v_fbhv != NULL);
-
- va.va_mask = XFS_AT_STAT|XFS_AT_XFLAGS;
- VOP_GETATTR(vp, &va, 0, NULL, error);
- if (!error) {
- inode = LINVFS_GET_IP(vp);
- inode->i_mode = VTTOIF(va.va_type) | va.va_mode;
- inode->i_nlink = va.va_nlink;
- inode->i_uid = va.va_uid;
- inode->i_gid = va.va_gid;
- inode->i_blocks = va.va_nblocks;
- inode->i_mtime = va.va_mtime;
- inode->i_ctime = va.va_ctime;
- inode->i_atime = va.va_atime;
- if (va.va_xflags & XFS_XFLAG_IMMUTABLE)
- inode->i_flags |= S_IMMUTABLE;
- else
- inode->i_flags &= ~S_IMMUTABLE;
- if (va.va_xflags & XFS_XFLAG_APPEND)
- inode->i_flags |= S_APPEND;
- else
- inode->i_flags &= ~S_APPEND;
- if (va.va_xflags & XFS_XFLAG_SYNC)
- inode->i_flags |= S_SYNC;
- else
- inode->i_flags &= ~S_SYNC;
- if (va.va_xflags & XFS_XFLAG_NOATIME)
- inode->i_flags |= S_NOATIME;
- else
- inode->i_flags &= ~S_NOATIME;
- VUNMODIFY(vp);
- }
- return -error;
-}
-
-/*
- * purge a vnode from the cache
- * At this point the vnode is guaranteed to have no references (vn_count == 0)
- * The caller has to make sure that there are no ways someone could
- * get a handle (via vn_get) on the vnode (usually done via a mount/vfs lock).
- */
-void
-vn_purge(
- struct vnode *vp,
- vmap_t *vmap)
-{
- vn_trace_entry(vp, "vn_purge", (inst_t *)__return_address);
-
-again:
- /*
- * Check whether vp has already been reclaimed since our caller
- * sampled its version while holding a filesystem cache lock that
- * its VOP_RECLAIM function acquires.
- */
- VN_LOCK(vp);
- if (vp->v_number != vmap->v_number) {
- VN_UNLOCK(vp, 0);
- return;
- }
-
- /*
- * If vp is being reclaimed or inactivated, wait until it is inert,
- * then proceed. Can't assume that vnode is actually reclaimed
- * just because the reclaimed flag is asserted -- a vn_alloc
- * reclaim can fail.
- */
- if (vp->v_flag & (VINACT | VRECLM)) {
- ASSERT(vn_count(vp) == 0);
- vp->v_flag |= VWAIT;
- sv_wait(vptosync(vp), PINOD, &vp->v_lock, 0);
- goto again;
- }
-
- /*
- * Another process could have raced in and gotten this vnode...
- */
- if (vn_count(vp) > 0) {
- VN_UNLOCK(vp, 0);
- return;
- }
-
- XFS_STATS_DEC(vn_active);
- vp->v_flag |= VRECLM;
- VN_UNLOCK(vp, 0);
-
- /*
- * Call VOP_RECLAIM and clean vp. The FSYNC_INVAL flag tells
- * vp's filesystem to flush and invalidate all cached resources.
- * When vn_reclaim returns, vp should have no private data,
- * either in a system cache or attached to v_data.
- */
- if (vn_reclaim(vp) != 0)
- panic("vn_purge: cannot reclaim");
-
- /*
- * Wakeup anyone waiting for vp to be reclaimed.
- */
- vn_wakeup(vp);
-}
-
-/*
- * Add a reference to a referenced vnode.
- */
-struct vnode *
-vn_hold(
- struct vnode *vp)
-{
- struct inode *inode;
-
- XFS_STATS_INC(vn_hold);
-
- VN_LOCK(vp);
- inode = igrab(LINVFS_GET_IP(vp));
- ASSERT(inode);
- VN_UNLOCK(vp, 0);
-
- return vp;
-}
-
-/*
- * Call VOP_INACTIVE on last reference.
- */
-void
-vn_rele(
- struct vnode *vp)
-{
- int vcnt;
- int cache;
-
- XFS_STATS_INC(vn_rele);
-
- VN_LOCK(vp);
-
- vn_trace_entry(vp, "vn_rele", (inst_t *)__return_address);
- vcnt = vn_count(vp);
-
- /*
- * Since we always get called from put_inode we know
- * that i_count won't be decremented after we
- * return.
- */
- if (!vcnt) {
- /*
- * As soon as we turn this on, noone can find us in vn_get
- * until we turn off VINACT or VRECLM
- */
- vp->v_flag |= VINACT;
- VN_UNLOCK(vp, 0);
-
- /*
- * Do not make the VOP_INACTIVE call if there
- * are no behaviors attached to the vnode to call.
- */
- if (vp->v_fbhv)
- VOP_INACTIVE(vp, NULL, cache);
-
- VN_LOCK(vp);
- if (vp->v_flag & VWAIT)
- sv_broadcast(vptosync(vp));
-
- vp->v_flag &= ~(VINACT|VWAIT|VRECLM|VMODIFIED);
- }
-
- VN_UNLOCK(vp, 0);
-
- vn_trace_exit(vp, "vn_rele", (inst_t *)__return_address);
-}
-
-/*
- * Finish the removal of a vnode.
- */
-void
-vn_remove(
- struct vnode *vp)
-{
- vmap_t vmap;
-
- /* Make sure we don't do this to the same vnode twice */
- if (!(vp->v_fbhv))
- return;
-
- XFS_STATS_INC(vn_remove);
- vn_trace_exit(vp, "vn_remove", (inst_t *)__return_address);
-
- /*
- * After the following purge the vnode
- * will no longer exist.
- */
- VMAP(vp, vmap);
- vn_purge(vp, &vmap);
-}
-
-
-#ifdef XFS_VNODE_TRACE
-
-#define KTRACE_ENTER(vp, vk, s, line, ra) \
- ktrace_enter( (vp)->v_trace, \
-/* 0 */ (void *)(__psint_t)(vk), \
-/* 1 */ (void *)(s), \
-/* 2 */ (void *)(__psint_t) line, \
-/* 3 */ (void *)(vn_count(vp)), \
-/* 4 */ (void *)(ra), \
-/* 5 */ (void *)(__psunsigned_t)(vp)->v_flag, \
-/* 6 */ (void *)(__psint_t)smp_processor_id(), \
-/* 7 */ (void *)(__psint_t)(current->pid), \
-/* 8 */ (void *)__return_address, \
-/* 9 */ 0, 0, 0, 0, 0, 0, 0)
-
-/*
- * Vnode tracing code.
- */
-void
-vn_trace_entry(vnode_t *vp, char *func, inst_t *ra)
-{
- KTRACE_ENTER(vp, VNODE_KTRACE_ENTRY, func, 0, ra);
-}
-
-void
-vn_trace_exit(vnode_t *vp, char *func, inst_t *ra)
-{
- KTRACE_ENTER(vp, VNODE_KTRACE_EXIT, func, 0, ra);
-}
-
-void
-vn_trace_hold(vnode_t *vp, char *file, int line, inst_t *ra)
-{
- KTRACE_ENTER(vp, VNODE_KTRACE_HOLD, file, line, ra);
-}
-
-void
-vn_trace_ref(vnode_t *vp, char *file, int line, inst_t *ra)
-{
- KTRACE_ENTER(vp, VNODE_KTRACE_REF, file, line, ra);
-}
-
-void
-vn_trace_rele(vnode_t *vp, char *file, int line, inst_t *ra)
-{
- KTRACE_ENTER(vp, VNODE_KTRACE_RELE, file, line, ra);
-}
-#endif /* XFS_VNODE_TRACE */
+++ /dev/null
-/*
- * Copyright (c) 2000-2003 Silicon Graphics, Inc. All Rights Reserved.
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of version 2 of the GNU General Public License as
- * published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it would be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
- *
- * Further, this software is distributed without any warranty that it is
- * free of the rightful claim of any third person regarding infringement
- * or the like. Any license provided herein, whether implied or
- * otherwise, applies only to this software file. Patent licenses, if
- * any, provided herein do not apply to combinations of this program with
- * other software, or any other product whatsoever.
- *
- * You should have received a copy of the GNU General Public License along
- * with this program; if not, write the Free Software Foundation, Inc., 59
- * Temple Place - Suite 330, Boston MA 02111-1307, USA.
- *
- * Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy,
- * Mountain View, CA 94043, or:
- *
- * http://www.sgi.com
- *
- * For further information regarding this notice, see:
- *
- * http://oss.sgi.com/projects/GenInfo/SGIGPLNoticeExplan/
- *
- * Portions Copyright (c) 1989, 1993
- * The Regents of the University of California. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. Neither the name of the University nor the names of its contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-#ifndef __XFS_VNODE_H__
-#define __XFS_VNODE_H__
-
-struct uio;
-struct file;
-struct vattr;
-struct xfs_iomap;
-struct attrlist_cursor_kern;
-
-/*
- * Vnode types. VNON means no type.
- */
-enum vtype { VNON, VREG, VDIR, VBLK, VCHR, VLNK, VFIFO, VBAD, VSOCK };
-
-typedef xfs_ino_t vnumber_t;
-typedef struct dentry vname_t;
-typedef bhv_head_t vn_bhv_head_t;
-
-/*
- * MP locking protocols:
- * v_flag, v_vfsp VN_LOCK/VN_UNLOCK
- * v_type read-only or fs-dependent
- */
-typedef struct vnode {
- __u32 v_flag; /* vnode flags (see below) */
- enum vtype v_type; /* vnode type */
- struct vfs *v_vfsp; /* ptr to containing VFS */
- vnumber_t v_number; /* in-core vnode number */
- vn_bhv_head_t v_bh; /* behavior head */
- spinlock_t v_lock; /* VN_LOCK/VN_UNLOCK */
- struct inode v_inode; /* Linux inode */
-#ifdef XFS_VNODE_TRACE
- struct ktrace *v_trace; /* trace header structure */
-#endif
-} vnode_t;
-
-#define v_fbhv v_bh.bh_first /* first behavior */
-#define v_fops v_bh.bh_first->bd_ops /* first behavior ops */
-
-#define VNODE_POSITION_BASE BHV_POSITION_BASE /* chain bottom */
-#define VNODE_POSITION_TOP BHV_POSITION_TOP /* chain top */
-#define VNODE_POSITION_INVALID BHV_POSITION_INVALID /* invalid pos. num */
-
-typedef enum {
- VN_BHV_UNKNOWN, /* not specified */
- VN_BHV_XFS, /* xfs */
- VN_BHV_DM, /* data migration */
- VN_BHV_QM, /* quota manager */
- VN_BHV_IO, /* IO path */
- VN_BHV_END /* housekeeping end-of-range */
-} vn_bhv_t;
-
-#define VNODE_POSITION_XFS (VNODE_POSITION_BASE)
-#define VNODE_POSITION_DM (VNODE_POSITION_BASE+10)
-#define VNODE_POSITION_QM (VNODE_POSITION_BASE+20)
-#define VNODE_POSITION_IO (VNODE_POSITION_BASE+30)
-
-/*
- * Macros for dealing with the behavior descriptor inside of the vnode.
- */
-#define BHV_TO_VNODE(bdp) ((vnode_t *)BHV_VOBJ(bdp))
-#define BHV_TO_VNODE_NULL(bdp) ((vnode_t *)BHV_VOBJNULL(bdp))
-
-#define VN_BHV_HEAD(vp) ((bhv_head_t *)(&((vp)->v_bh)))
-#define vn_bhv_head_init(bhp,name) bhv_head_init(bhp,name)
-#define vn_bhv_remove(bhp,bdp) bhv_remove(bhp,bdp)
-#define vn_bhv_lookup(bhp,ops) bhv_lookup(bhp,ops)
-#define vn_bhv_lookup_unlocked(bhp,ops) bhv_lookup_unlocked(bhp,ops)
-
-/*
- * Vnode to Linux inode mapping.
- */
-#define LINVFS_GET_VP(inode) ((vnode_t *)list_entry(inode, vnode_t, v_inode))
-#define LINVFS_GET_IP(vp) (&(vp)->v_inode)
-
-/*
- * Convert between vnode types and inode formats (since POSIX.1
- * defines mode word of stat structure in terms of inode formats).
- */
-extern enum vtype iftovt_tab[];
-extern u_short vttoif_tab[];
-#define IFTOVT(mode) (iftovt_tab[((mode) & S_IFMT) >> 12])
-#define VTTOIF(indx) (vttoif_tab[(int)(indx)])
-#define MAKEIMODE(indx, mode) (int)(VTTOIF(indx) | (mode))
-
-
-/*
- * Vnode flags.
- */
-#define VINACT 0x1 /* vnode is being inactivated */
-#define VRECLM 0x2 /* vnode is being reclaimed */
-#define VWAIT 0x4 /* waiting for VINACT/VRECLM to end */
-#define VMODIFIED 0x8 /* XFS inode state possibly differs */
- /* to the Linux inode state. */
-
-/*
- * Values for the VOP_RWLOCK and VOP_RWUNLOCK flags parameter.
- */
-typedef enum vrwlock {
- VRWLOCK_NONE,
- VRWLOCK_READ,
- VRWLOCK_WRITE,
- VRWLOCK_WRITE_DIRECT,
- VRWLOCK_TRY_READ,
- VRWLOCK_TRY_WRITE
-} vrwlock_t;
-
-/*
- * Return values for VOP_INACTIVE. A return value of
- * VN_INACTIVE_NOCACHE implies that the file system behavior
- * has disassociated its state and bhv_desc_t from the vnode.
- */
-#define VN_INACTIVE_CACHE 0
-#define VN_INACTIVE_NOCACHE 1
-
-/*
- * Values for the cmd code given to VOP_VNODE_CHANGE.
- */
-typedef enum vchange {
- VCHANGE_FLAGS_FRLOCKS = 0,
- VCHANGE_FLAGS_ENF_LOCKING = 1,
- VCHANGE_FLAGS_TRUNCATED = 2,
- VCHANGE_FLAGS_PAGE_DIRTY = 3,
- VCHANGE_FLAGS_IOEXCL_COUNT = 4
-} vchange_t;
-
-
-typedef int (*vop_open_t)(bhv_desc_t *, struct cred *);
-typedef ssize_t (*vop_read_t)(bhv_desc_t *, struct kiocb *,
- const struct iovec *, unsigned int,
- loff_t *, int, struct cred *);
-typedef ssize_t (*vop_write_t)(bhv_desc_t *, struct kiocb *,
- const struct iovec *, unsigned int,
- loff_t *, int, struct cred *);
-typedef ssize_t (*vop_sendfile_t)(bhv_desc_t *, struct file *,
- loff_t *, int, size_t, read_actor_t,
- void *, struct cred *);
-typedef int (*vop_ioctl_t)(bhv_desc_t *, struct inode *, struct file *,
- int, unsigned int, unsigned long);
-typedef int (*vop_getattr_t)(bhv_desc_t *, struct vattr *, int,
- struct cred *);
-typedef int (*vop_setattr_t)(bhv_desc_t *, struct vattr *, int,
- struct cred *);
-typedef int (*vop_access_t)(bhv_desc_t *, int, struct cred *);
-typedef int (*vop_lookup_t)(bhv_desc_t *, vname_t *, vnode_t **,
- int, vnode_t *, struct cred *);
-typedef int (*vop_create_t)(bhv_desc_t *, vname_t *, struct vattr *,
- vnode_t **, struct cred *);
-typedef int (*vop_remove_t)(bhv_desc_t *, vname_t *, struct cred *);
-typedef int (*vop_link_t)(bhv_desc_t *, vnode_t *, vname_t *,
- struct cred *);
-typedef int (*vop_rename_t)(bhv_desc_t *, vname_t *, vnode_t *, vname_t *,
- struct cred *);
-typedef int (*vop_mkdir_t)(bhv_desc_t *, vname_t *, struct vattr *,
- vnode_t **, struct cred *);
-typedef int (*vop_rmdir_t)(bhv_desc_t *, vname_t *, struct cred *);
-typedef int (*vop_readdir_t)(bhv_desc_t *, struct uio *, struct cred *,
- int *);
-typedef int (*vop_symlink_t)(bhv_desc_t *, vname_t *, struct vattr *,
- char *, vnode_t **, struct cred *);
-typedef int (*vop_readlink_t)(bhv_desc_t *, struct uio *, int,
- struct cred *);
-typedef int (*vop_fsync_t)(bhv_desc_t *, int, struct cred *,
- xfs_off_t, xfs_off_t);
-typedef int (*vop_inactive_t)(bhv_desc_t *, struct cred *);
-typedef int (*vop_fid2_t)(bhv_desc_t *, struct fid *);
-typedef int (*vop_release_t)(bhv_desc_t *);
-typedef int (*vop_rwlock_t)(bhv_desc_t *, vrwlock_t);
-typedef void (*vop_rwunlock_t)(bhv_desc_t *, vrwlock_t);
-typedef int (*vop_bmap_t)(bhv_desc_t *, xfs_off_t, ssize_t, int,
- struct xfs_iomap *, int *);
-typedef int (*vop_reclaim_t)(bhv_desc_t *);
-typedef int (*vop_attr_get_t)(bhv_desc_t *, char *, char *, int *, int,
- struct cred *);
-typedef int (*vop_attr_set_t)(bhv_desc_t *, char *, char *, int, int,
- struct cred *);
-typedef int (*vop_attr_remove_t)(bhv_desc_t *, char *, int, struct cred *);
-typedef int (*vop_attr_list_t)(bhv_desc_t *, char *, int, int,
- struct attrlist_cursor_kern *, struct cred *);
-typedef void (*vop_link_removed_t)(bhv_desc_t *, vnode_t *, int);
-typedef void (*vop_vnode_change_t)(bhv_desc_t *, vchange_t, __psint_t);
-typedef void (*vop_ptossvp_t)(bhv_desc_t *, xfs_off_t, xfs_off_t, int);
-typedef void (*vop_pflushinvalvp_t)(bhv_desc_t *, xfs_off_t, xfs_off_t, int);
-typedef int (*vop_pflushvp_t)(bhv_desc_t *, xfs_off_t, xfs_off_t,
- uint64_t, int);
-typedef int (*vop_iflush_t)(bhv_desc_t *, int);
-
-
-typedef struct vnodeops {
- bhv_position_t vn_position; /* position within behavior chain */
- vop_open_t vop_open;
- vop_read_t vop_read;
- vop_write_t vop_write;
- vop_sendfile_t vop_sendfile;
- vop_ioctl_t vop_ioctl;
- vop_getattr_t vop_getattr;
- vop_setattr_t vop_setattr;
- vop_access_t vop_access;
- vop_lookup_t vop_lookup;
- vop_create_t vop_create;
- vop_remove_t vop_remove;
- vop_link_t vop_link;
- vop_rename_t vop_rename;
- vop_mkdir_t vop_mkdir;
- vop_rmdir_t vop_rmdir;
- vop_readdir_t vop_readdir;
- vop_symlink_t vop_symlink;
- vop_readlink_t vop_readlink;
- vop_fsync_t vop_fsync;
- vop_inactive_t vop_inactive;
- vop_fid2_t vop_fid2;
- vop_rwlock_t vop_rwlock;
- vop_rwunlock_t vop_rwunlock;
- vop_bmap_t vop_bmap;
- vop_reclaim_t vop_reclaim;
- vop_attr_get_t vop_attr_get;
- vop_attr_set_t vop_attr_set;
- vop_attr_remove_t vop_attr_remove;
- vop_attr_list_t vop_attr_list;
- vop_link_removed_t vop_link_removed;
- vop_vnode_change_t vop_vnode_change;
- vop_ptossvp_t vop_tosspages;
- vop_pflushinvalvp_t vop_flushinval_pages;
- vop_pflushvp_t vop_flush_pages;
- vop_release_t vop_release;
- vop_iflush_t vop_iflush;
-} vnodeops_t;
-
-/*
- * VOP's.
- */
-#define _VOP_(op, vp) (*((vnodeops_t *)(vp)->v_fops)->op)
-
-#define VOP_READ(vp,file,iov,segs,offset,ioflags,cr,rv) \
- rv = _VOP_(vop_read, vp)((vp)->v_fbhv,file,iov,segs,offset,ioflags,cr)
-#define VOP_WRITE(vp,file,iov,segs,offset,ioflags,cr,rv) \
- rv = _VOP_(vop_write, vp)((vp)->v_fbhv,file,iov,segs,offset,ioflags,cr)
-#define VOP_SENDFILE(vp,f,off,ioflags,cnt,act,targ,cr,rv) \
- rv = _VOP_(vop_sendfile, vp)((vp)->v_fbhv,f,off,ioflags,cnt,act,targ,cr)
-#define VOP_BMAP(vp,of,sz,rw,b,n,rv) \
- rv = _VOP_(vop_bmap, vp)((vp)->v_fbhv,of,sz,rw,b,n)
-#define VOP_OPEN(vp, cr, rv) \
- rv = _VOP_(vop_open, vp)((vp)->v_fbhv, cr)
-#define VOP_GETATTR(vp, vap, f, cr, rv) \
- rv = _VOP_(vop_getattr, vp)((vp)->v_fbhv, vap, f, cr)
-#define VOP_SETATTR(vp, vap, f, cr, rv) \
- rv = _VOP_(vop_setattr, vp)((vp)->v_fbhv, vap, f, cr)
-#define VOP_ACCESS(vp, mode, cr, rv) \
- rv = _VOP_(vop_access, vp)((vp)->v_fbhv, mode, cr)
-#define VOP_LOOKUP(vp,d,vpp,f,rdir,cr,rv) \
- rv = _VOP_(vop_lookup, vp)((vp)->v_fbhv,d,vpp,f,rdir,cr)
-#define VOP_CREATE(dvp,d,vap,vpp,cr,rv) \
- rv = _VOP_(vop_create, dvp)((dvp)->v_fbhv,d,vap,vpp,cr)
-#define VOP_REMOVE(dvp,d,cr,rv) \
- rv = _VOP_(vop_remove, dvp)((dvp)->v_fbhv,d,cr)
-#define VOP_LINK(tdvp,fvp,d,cr,rv) \
- rv = _VOP_(vop_link, tdvp)((tdvp)->v_fbhv,fvp,d,cr)
-#define VOP_RENAME(fvp,fnm,tdvp,tnm,cr,rv) \
- rv = _VOP_(vop_rename, fvp)((fvp)->v_fbhv,fnm,tdvp,tnm,cr)
-#define VOP_MKDIR(dp,d,vap,vpp,cr,rv) \
- rv = _VOP_(vop_mkdir, dp)((dp)->v_fbhv,d,vap,vpp,cr)
-#define VOP_RMDIR(dp,d,cr,rv) \
- rv = _VOP_(vop_rmdir, dp)((dp)->v_fbhv,d,cr)
-#define VOP_READDIR(vp,uiop,cr,eofp,rv) \
- rv = _VOP_(vop_readdir, vp)((vp)->v_fbhv,uiop,cr,eofp)
-#define VOP_SYMLINK(dvp,d,vap,tnm,vpp,cr,rv) \
- rv = _VOP_(vop_symlink, dvp) ((dvp)->v_fbhv,d,vap,tnm,vpp,cr)
-#define VOP_READLINK(vp,uiop,fl,cr,rv) \
- rv = _VOP_(vop_readlink, vp)((vp)->v_fbhv,uiop,fl,cr)
-#define VOP_FSYNC(vp,f,cr,b,e,rv) \
- rv = _VOP_(vop_fsync, vp)((vp)->v_fbhv,f,cr,b,e)
-#define VOP_INACTIVE(vp, cr, rv) \
- rv = _VOP_(vop_inactive, vp)((vp)->v_fbhv, cr)
-#define VOP_RELEASE(vp, rv) \
- rv = _VOP_(vop_release, vp)((vp)->v_fbhv)
-#define VOP_FID2(vp, fidp, rv) \
- rv = _VOP_(vop_fid2, vp)((vp)->v_fbhv, fidp)
-#define VOP_RWLOCK(vp,i) \
- (void)_VOP_(vop_rwlock, vp)((vp)->v_fbhv, i)
-#define VOP_RWLOCK_TRY(vp,i) \
- _VOP_(vop_rwlock, vp)((vp)->v_fbhv, i)
-#define VOP_RWUNLOCK(vp,i) \
- (void)_VOP_(vop_rwunlock, vp)((vp)->v_fbhv, i)
-#define VOP_FRLOCK(vp,c,fl,flags,offset,fr,rv) \
- rv = _VOP_(vop_frlock, vp)((vp)->v_fbhv,c,fl,flags,offset,fr)
-#define VOP_RECLAIM(vp, rv) \
- rv = _VOP_(vop_reclaim, vp)((vp)->v_fbhv)
-#define VOP_ATTR_GET(vp, name, val, vallenp, fl, cred, rv) \
- rv = _VOP_(vop_attr_get, vp)((vp)->v_fbhv,name,val,vallenp,fl,cred)
-#define VOP_ATTR_SET(vp, name, val, vallen, fl, cred, rv) \
- rv = _VOP_(vop_attr_set, vp)((vp)->v_fbhv,name,val,vallen,fl,cred)
-#define VOP_ATTR_REMOVE(vp, name, flags, cred, rv) \
- rv = _VOP_(vop_attr_remove, vp)((vp)->v_fbhv,name,flags,cred)
-#define VOP_ATTR_LIST(vp, buf, buflen, fl, cursor, cred, rv) \
- rv = _VOP_(vop_attr_list, vp)((vp)->v_fbhv,buf,buflen,fl,cursor,cred)
-#define VOP_LINK_REMOVED(vp, dvp, linkzero) \
- (void)_VOP_(vop_link_removed, vp)((vp)->v_fbhv, dvp, linkzero)
-#define VOP_VNODE_CHANGE(vp, cmd, val) \
- (void)_VOP_(vop_vnode_change, vp)((vp)->v_fbhv,cmd,val)
-/*
- * These are page cache functions that now go thru VOPs.
- * 'last' parameter is unused and left in for IRIX compatibility
- */
-#define VOP_TOSS_PAGES(vp, first, last, fiopt) \
- _VOP_(vop_tosspages, vp)((vp)->v_fbhv,first, last, fiopt)
-/*
- * 'last' parameter is unused and left in for IRIX compatibility
- */
-#define VOP_FLUSHINVAL_PAGES(vp, first, last, fiopt) \
- _VOP_(vop_flushinval_pages, vp)((vp)->v_fbhv,first,last,fiopt)
-/*
- * 'last' parameter is unused and left in for IRIX compatibility
- */
-#define VOP_FLUSH_PAGES(vp, first, last, flags, fiopt, rv) \
- rv = _VOP_(vop_flush_pages, vp)((vp)->v_fbhv,first,last,flags,fiopt)
-#define VOP_IOCTL(vp, inode, filp, fl, cmd, arg, rv) \
- rv = _VOP_(vop_ioctl, vp)((vp)->v_fbhv,inode,filp,fl,cmd,arg)
-#define VOP_IFLUSH(vp, flags, rv) \
- rv = _VOP_(vop_iflush, vp)((vp)->v_fbhv, flags)
-
-/*
- * Flags for read/write calls - same values as IRIX
- */
-#define IO_ISDIRECT 0x00004 /* bypass page cache */
-#define IO_INVIS 0x00020 /* don't update inode timestamps */
-
-/*
- * Flags for VOP_IFLUSH call
- */
-#define FLUSH_SYNC 1 /* wait for flush to complete */
-#define FLUSH_INODE 2 /* flush the inode itself */
-#define FLUSH_LOG 4 /* force the last log entry for
- * this inode out to disk */
-
-/*
- * Flush/Invalidate options for VOP_TOSS_PAGES, VOP_FLUSHINVAL_PAGES and
- * VOP_FLUSH_PAGES.
- */
-#define FI_NONE 0 /* none */
-#define FI_REMAPF 1 /* Do a remapf prior to the operation */
-#define FI_REMAPF_LOCKED 2 /* Do a remapf prior to the operation.
- Prevent VM access to the pages until
- the operation completes. */
-
-/*
- * Vnode attributes. va_mask indicates those attributes the caller
- * wants to set or extract.
- */
-typedef struct vattr {
- int va_mask; /* bit-mask of attributes present */
- enum vtype va_type; /* vnode type (for create) */
- mode_t va_mode; /* file access mode and type */
- nlink_t va_nlink; /* number of references to file */
- uid_t va_uid; /* owner user id */
- gid_t va_gid; /* owner group id */
- xfs_ino_t va_nodeid; /* file id */
- xfs_off_t va_size; /* file size in bytes */
- u_long va_blocksize; /* blocksize preferred for i/o */
- struct timespec va_atime; /* time of last access */
- struct timespec va_mtime; /* time of last modification */
- struct timespec va_ctime; /* time file changed */
- u_int va_gen; /* generation number of file */
- xfs_dev_t va_rdev; /* device the special file represents */
- __int64_t va_nblocks; /* number of blocks allocated */
- u_long va_xflags; /* random extended file flags */
- u_long va_extsize; /* file extent size */
- u_long va_nextents; /* number of extents in file */
- u_long va_anextents; /* number of attr extents in file */
- int va_projid; /* project id */
-} vattr_t;
-
-/*
- * setattr or getattr attributes
- */
-#define XFS_AT_TYPE 0x00000001
-#define XFS_AT_MODE 0x00000002
-#define XFS_AT_UID 0x00000004
-#define XFS_AT_GID 0x00000008
-#define XFS_AT_FSID 0x00000010
-#define XFS_AT_NODEID 0x00000020
-#define XFS_AT_NLINK 0x00000040
-#define XFS_AT_SIZE 0x00000080
-#define XFS_AT_ATIME 0x00000100
-#define XFS_AT_MTIME 0x00000200
-#define XFS_AT_CTIME 0x00000400
-#define XFS_AT_RDEV 0x00000800
-#define XFS_AT_BLKSIZE 0x00001000
-#define XFS_AT_NBLOCKS 0x00002000
-#define XFS_AT_VCODE 0x00004000
-#define XFS_AT_MAC 0x00008000
-#define XFS_AT_UPDATIME 0x00010000
-#define XFS_AT_UPDMTIME 0x00020000
-#define XFS_AT_UPDCTIME 0x00040000
-#define XFS_AT_ACL 0x00080000
-#define XFS_AT_CAP 0x00100000
-#define XFS_AT_INF 0x00200000
-#define XFS_AT_XFLAGS 0x00400000
-#define XFS_AT_EXTSIZE 0x00800000
-#define XFS_AT_NEXTENTS 0x01000000
-#define XFS_AT_ANEXTENTS 0x02000000
-#define XFS_AT_PROJID 0x04000000
-#define XFS_AT_SIZE_NOPERM 0x08000000
-#define XFS_AT_GENCOUNT 0x10000000
-
-#define XFS_AT_ALL (XFS_AT_TYPE|XFS_AT_MODE|XFS_AT_UID|XFS_AT_GID|\
- XFS_AT_FSID|XFS_AT_NODEID|XFS_AT_NLINK|XFS_AT_SIZE|\
- XFS_AT_ATIME|XFS_AT_MTIME|XFS_AT_CTIME|XFS_AT_RDEV|\
- XFS_AT_BLKSIZE|XFS_AT_NBLOCKS|XFS_AT_VCODE|XFS_AT_MAC|\
- XFS_AT_ACL|XFS_AT_CAP|XFS_AT_INF|XFS_AT_XFLAGS|XFS_AT_EXTSIZE|\
- XFS_AT_NEXTENTS|XFS_AT_ANEXTENTS|XFS_AT_PROJID|XFS_AT_GENCOUNT)
-
-#define XFS_AT_STAT (XFS_AT_TYPE|XFS_AT_MODE|XFS_AT_UID|XFS_AT_GID|\
- XFS_AT_FSID|XFS_AT_NODEID|XFS_AT_NLINK|XFS_AT_SIZE|\
- XFS_AT_ATIME|XFS_AT_MTIME|XFS_AT_CTIME|XFS_AT_RDEV|\
- XFS_AT_BLKSIZE|XFS_AT_NBLOCKS|XFS_AT_PROJID)
-
-#define XFS_AT_TIMES (XFS_AT_ATIME|XFS_AT_MTIME|XFS_AT_CTIME)
-
-#define XFS_AT_UPDTIMES (XFS_AT_UPDATIME|XFS_AT_UPDMTIME|XFS_AT_UPDCTIME)
-
-#define XFS_AT_NOSET (XFS_AT_NLINK|XFS_AT_RDEV|XFS_AT_FSID|XFS_AT_NODEID|\
- XFS_AT_TYPE|XFS_AT_BLKSIZE|XFS_AT_NBLOCKS|XFS_AT_VCODE|\
- XFS_AT_NEXTENTS|XFS_AT_ANEXTENTS|XFS_AT_GENCOUNT)
-
-/*
- * Modes.
- */
-#define VSUID S_ISUID /* set user id on execution */
-#define VSGID S_ISGID /* set group id on execution */
-#define VSVTX S_ISVTX /* save swapped text even after use */
-#define VREAD S_IRUSR /* read, write, execute permissions */
-#define VWRITE S_IWUSR
-#define VEXEC S_IXUSR
-
-#define MODEMASK S_IALLUGO /* mode bits plus permission bits */
-
-/*
- * Check whether mandatory file locking is enabled.
- */
-#define MANDLOCK(vp, mode) \
- ((vp)->v_type == VREG && ((mode) & (VSGID|(VEXEC>>3))) == VSGID)
-
-extern void vn_init(void);
-extern int vn_wait(struct vnode *);
-extern vnode_t *vn_initialize(struct inode *);
-
-/*
- * Acquiring and invalidating vnodes:
- *
- * if (vn_get(vp, version, 0))
- * ...;
- * vn_purge(vp, version);
- *
- * vn_get and vn_purge must be called with vmap_t arguments, sampled
- * while a lock that the vnode's VOP_RECLAIM function acquires is
- * held, to ensure that the vnode sampled with the lock held isn't
- * recycled (VOP_RECLAIMed) or deallocated between the release of the lock
- * and the subsequent vn_get or vn_purge.
- */
-
-/*
- * vnode_map structures _must_ match vn_epoch and vnode structure sizes.
- */
-typedef struct vnode_map {
- vfs_t *v_vfsp;
- vnumber_t v_number; /* in-core vnode number */
- xfs_ino_t v_ino; /* inode # */
-} vmap_t;
-
-#define VMAP(vp, vmap) {(vmap).v_vfsp = (vp)->v_vfsp, \
- (vmap).v_number = (vp)->v_number, \
- (vmap).v_ino = (vp)->v_inode.i_ino; }
-
-extern void vn_purge(struct vnode *, vmap_t *);
-extern vnode_t *vn_get(struct vnode *, vmap_t *);
-extern int vn_revalidate(struct vnode *);
-extern void vn_remove(struct vnode *);
-
-static inline int vn_count(struct vnode *vp)
-{
- return atomic_read(&LINVFS_GET_IP(vp)->i_count);
-}
-
-/*
- * Vnode reference counting functions (and macros for compatibility).
- */
-extern vnode_t *vn_hold(struct vnode *);
-extern void vn_rele(struct vnode *);
-
-#if defined(XFS_VNODE_TRACE)
-#define VN_HOLD(vp) \
- ((void)vn_hold(vp), \
- vn_trace_hold(vp, __FILE__, __LINE__, (inst_t *)__return_address))
-#define VN_RELE(vp) \
- (vn_trace_rele(vp, __FILE__, __LINE__, (inst_t *)__return_address), \
- iput(LINVFS_GET_IP(vp)))
-#else
-#define VN_HOLD(vp) ((void)vn_hold(vp))
-#define VN_RELE(vp) (iput(LINVFS_GET_IP(vp)))
-#endif
-
-/*
- * Vname handling macros.
- */
-#define VNAME(dentry) ((char *) (dentry)->d_name.name)
-#define VNAMELEN(dentry) ((dentry)->d_name.len)
-#define VNAME_TO_VNODE(dentry) (LINVFS_GET_VP((dentry)->d_inode))
-
-/*
- * Vnode spinlock manipulation.
- */
-#define VN_LOCK(vp) mutex_spinlock(&(vp)->v_lock)
-#define VN_UNLOCK(vp, s) mutex_spinunlock(&(vp)->v_lock, s)
-#define VN_FLAGSET(vp,b) vn_flagset(vp,b)
-#define VN_FLAGCLR(vp,b) vn_flagclr(vp,b)
-
-static __inline__ void vn_flagset(struct vnode *vp, uint flag)
-{
- spin_lock(&vp->v_lock);
- vp->v_flag |= flag;
- spin_unlock(&vp->v_lock);
-}
-
-static __inline__ void vn_flagclr(struct vnode *vp, uint flag)
-{
- spin_lock(&vp->v_lock);
- vp->v_flag &= ~flag;
- spin_unlock(&vp->v_lock);
-}
-
-/*
- * Update modify/access/change times on the vnode
- */
-#define VN_MTIMESET(vp, tvp) (LINVFS_GET_IP(vp)->i_mtime = *(tvp))
-#define VN_ATIMESET(vp, tvp) (LINVFS_GET_IP(vp)->i_atime = *(tvp))
-#define VN_CTIMESET(vp, tvp) (LINVFS_GET_IP(vp)->i_ctime = *(tvp))
-
-/*
- * Some useful predicates.
- */
-#define VN_MAPPED(vp) mapping_mapped(LINVFS_GET_IP(vp)->i_mapping)
-#define VN_CACHED(vp) (LINVFS_GET_IP(vp)->i_mapping->nrpages)
-#define VN_DIRTY(vp) mapping_tagged(LINVFS_GET_IP(vp)->i_mapping, \
- PAGECACHE_TAG_DIRTY)
-#define VMODIFY(vp) VN_FLAGSET(vp, VMODIFIED)
-#define VUNMODIFY(vp) VN_FLAGCLR(vp, VMODIFIED)
-
-/*
- * Flags to VOP_SETATTR/VOP_GETATTR.
- */
-#define ATTR_UTIME 0x01 /* non-default utime(2) request */
-#define ATTR_DMI 0x08 /* invocation from a DMI function */
-#define ATTR_LAZY 0x80 /* set/get attributes lazily */
-#define ATTR_NONBLOCK 0x100 /* return EAGAIN if operation would block */
-
-/*
- * Flags to VOP_FSYNC and VOP_RECLAIM.
- */
-#define FSYNC_NOWAIT 0 /* asynchronous flush */
-#define FSYNC_WAIT 0x1 /* synchronous fsync or forced reclaim */
-#define FSYNC_INVAL 0x2 /* flush and invalidate cached data */
-#define FSYNC_DATA 0x4 /* synchronous fsync of data only */
-
-/*
- * Tracking vnode activity.
- */
-#if defined(XFS_VNODE_TRACE)
-
-#define VNODE_TRACE_SIZE 16 /* number of trace entries */
-#define VNODE_KTRACE_ENTRY 1
-#define VNODE_KTRACE_EXIT 2
-#define VNODE_KTRACE_HOLD 3
-#define VNODE_KTRACE_REF 4
-#define VNODE_KTRACE_RELE 5
-
-extern void vn_trace_entry(struct vnode *, char *, inst_t *);
-extern void vn_trace_exit(struct vnode *, char *, inst_t *);
-extern void vn_trace_hold(struct vnode *, char *, int, inst_t *);
-extern void vn_trace_ref(struct vnode *, char *, int, inst_t *);
-extern void vn_trace_rele(struct vnode *, char *, int, inst_t *);
-
-#define VN_TRACE(vp) \
- vn_trace_ref(vp, __FILE__, __LINE__, (inst_t *)__return_address)
-#else
-#define vn_trace_entry(a,b,c)
-#define vn_trace_exit(a,b,c)
-#define vn_trace_hold(a,b,c,d)
-#define vn_trace_ref(a,b,c,d)
-#define vn_trace_rele(a,b,c,d)
-#define VN_TRACE(vp)
-#endif
-
-#endif /* __XFS_VNODE_H__ */
+++ /dev/null
-#ifndef _ASM_ALPHA_RELAY_H
-#define _ASM_ALPHA_RELAY_H
-
-#include <asm-generic/relay.h>
-#endif
+++ /dev/null
-#ifndef _ALPHA_RMAP_H
-#define _ALPHA_RMAP_H
-
-/* nothing to see, move along */
-#include <asm-generic/rmap.h>
-
-#endif
+++ /dev/null
-/*
- * linux/include/asm-arm/arch-cl7500/ide.h
- *
- * Copyright (c) 1997 Russell King
- *
- * Modifications:
- * 29-07-1998 RMK Major re-work of IDE architecture specific code
- */
-#include <asm/irq.h>
-#include <asm/arch/hardware.h>
-
-/*
- * Set up a hw structure for a specified data port, control port and IRQ.
- * This should follow whatever the default interface uses.
- */
-static inline void ide_init_hwif_ports(hw_regs_t *hw, unsigned long data_port,
- unsigned long ctrl_port, int *irq)
-{
- unsigned long reg = data_port;
- int i;
-
- memset(hw, 0, sizeof(*hw));
-
- for (i = IDE_DATA_OFFSET; i <= IDE_STATUS_OFFSET; i++) {
- hw->io_ports[i] = reg;
- reg += 1;
- }
- if (ctrl_port) {
- hw->io_ports[IDE_CONTROL_OFFSET] = ctrl_port;
- } else {
- hw->io_ports[IDE_CONTROL_OFFSET] = data_port + 0x206;
- }
- if (irq != NULL)
- *irq = 0;
- hw->io_ports[IDE_IRQ_OFFSET] = 0;
-}
-
-/*
- * This registers the standard ports for this architecture with the IDE
- * driver.
- */
-static __inline__ void
-ide_init_default_hwifs(void)
-{
- hw_regs_t hw;
-
- ide_init_hwif_ports(&hw, ISASLOT_IO + 0x1f0, ISASLOT_IO + 0x3f6, NULL);
- hw.irq = IRQ_ISA_14;
- ide_register_hw(&hw);
-}
+++ /dev/null
-/*
- * linux/include/asm-arm/arch-cl7500/keyboard.h
- * from linux/include/asm-arm/arch-rpc/keyboard.h
- *
- * Keyboard driver definitions for CL7500 architecture
- *
- * Copyright (C) 1998-2001 Russell King
- */
-#include <asm/irq.h>
-#define NR_SCANCODES 128
-
-extern int ps2kbd_init_hw(void);
-
-#define kbd_disable_irq() disable_irq(IRQ_KEYBOARDRX)
-#define kbd_enable_irq() enable_irq(IRQ_KEYBOARDRX)
-#define kbd_init_hw() ps2kbd_init_hw()
+++ /dev/null
-/*
- * linux/include/asm-arm/arch-clps711x/keyboard.h
- *
- * Copyright (C) 1998-2001 Russell King
- */
-#include <asm/mach-types.h>
-
-#define NR_SCANCODES 128
-
-#define kbd_disable_irq() do { } while (0)
-#define kbd_enable_irq() do { } while (0)
-
-/*
- * EDB7211 keyboard driver
- */
-extern void edb7211_kbd_init_hw(void);
-extern void clps711x_kbd_init_hw(void);
-
-static inline void kbd_init_hw(void)
-{
- if (machine_is_edb7211())
- edb7211_kbd_init_hw();
-
- if (machine_is_autcpu12())
- clps711x_kbd_init_hw();
-}
+++ /dev/null
-/* no ide */
+++ /dev/null
-/*
- * linux/include/asm-arm/arch-ebsa285/ide.h
- *
- * Copyright (C) 1998 Russell King
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
- * Modifications:
- * 29-07-1998 RMK Major re-work of IDE architecture specific code
- */
-#include <asm/irq.h>
-
-/*
- * Set up a hw structure for a specified data port, control port and IRQ.
- * This should follow whatever the default interface uses.
- */
-static inline void ide_init_hwif_ports(hw_regs_t *hw, unsigned long data_port,
- unsigned long ctrl_port, int *irq)
-{
- unsigned long reg = data_port;
- int i;
-
- for (i = IDE_DATA_OFFSET; i <= IDE_STATUS_OFFSET; i++) {
- hw->io_ports[i] = reg;
- reg += 1;
- }
- hw->io_ports[IDE_CONTROL_OFFSET] = ctrl_port;
- if (irq)
- *irq = 0;
-}
-
-/*
- * This registers the standard ports for this architecture with the IDE
- * driver.
- */
-static __inline__ void ide_init_default_hwifs(void)
-{
-#if 0
- hw_regs_t hw;
-
- memset(hw, 0, sizeof(*hw));
-
- ide_init_hwif_ports(&hw, 0x1f0, 0x3f6, NULL);
- hw.irq = IRQ_HARDDISK;
- ide_register_hw(&hw);
-#endif
-}
+++ /dev/null
-/*
- * include/asm-arm/arch-iop3xx/ide.h
- *
- * Generic IDE functions for IOP310 systems
- *
- * Author: Deepak Saxena <dsaxena@mvista.com>
- *
- * Copyright 2001 MontaVista Software Inc.
- *
- * 09/26/2001 - Sharon Baartmans
- * Fixed so it actually works.
- */
-
-#ifndef _ASM_ARCH_IDE_H_
-#define _ASM_ARCH_IDE_H_
-
-/*
- * Set up a hw structure for a specified data port, control port and IRQ.
- * This should follow whatever the default interface uses.
- */
-static inline void ide_init_hwif_ports(hw_regs_t *hw, unsigned long data_port,
- unsigned long ctrl_port, int *irq)
-{
- unsigned long reg = data_port;
- int i;
- int regincr = 1;
-
- memset(hw, 0, sizeof(*hw));
-
- for (i = IDE_DATA_OFFSET; i <= IDE_STATUS_OFFSET; i++) {
- hw->io_ports[i] = reg;
- reg += regincr;
- }
-
- hw->io_ports[IDE_CONTROL_OFFSET] = ctrl_port;
-
- if (irq) *irq = 0;
-}
-
-/*
- * This registers the standard ports for this architecture with the IDE
- * driver.
- */
-static __inline__ void ide_init_default_hwifs(void)
-{
- /* There are no standard ports */
-}
-
-#endif
+++ /dev/null
-/*
- * linux/include/asm-arm/arch-l7200/ide.h
- *
- * Copyright (c) 2000 Steve Hill (sjhill@cotw.com)
- *
- * Changelog:
- * 03-29-2000 SJH Created file placeholder
- */
-#include <asm/irq.h>
-
-/*
- * Set up a hw structure for a specified data port, control port and IRQ.
- * This should follow whatever the default interface uses.
- */
-static inline void ide_init_hwif_ports(hw_regs_t *hw, unsigned long data_port,
- unsigned long ctrl_port, int *irq)
-{
-}
-
-/*
- * This registers the standard ports for this architecture with the IDE
- * driver.
- */
-static __inline__ void
-ide_init_default_hwifs(void)
-{
-}
+++ /dev/null
-/*
- * linux/include/asm-arm/arch-l7200/keyboard.h
- *
- * Keyboard driver definitions for LinkUp Systems L7200 architecture
- *
- * Copyright (C) 2000 Scott A McConnell (samcconn@cotw.com)
- * Steve Hill (sjhill@cotw.com)
- *
- * This file is subject to the terms and conditions of the GNU General Public
- * License. See the file COPYING in the main directory of this archive for
- * more details.
- *
- * Changelog:
- * 07-18-2000 SAM Created file
- * 07-28-2000 SJH Complete rewrite
- */
-
-#include <asm/irq.h>
-
-#error This needs fixing --rmk
-
-/*
- * Layout of L7200 keyboard registers
- */
-struct KBD_Port {
- unsigned int KBDR;
- unsigned int KBDMR;
- unsigned int KBSBSR;
- unsigned int Reserved;
- unsigned int KBKSR;
-};
-
-#define KBD_BASE IO_BASE_2 + 0x4000
-#define l7200kbd_hwregs ((volatile struct KBD_Port *) (KBD_BASE))
-
-extern void l7200kbd_init_hw(void);
-extern int l7200kbd_translate(unsigned char scancode, unsigned char *keycode,
- char raw_mode);
-
-#define kbd_setkeycode(sc,kc) (-EINVAL)
-#define kbd_getkeycode(sc) (-EINVAL)
-
-#define kbd_translate(sc, kcp, rm) ({ *(kcp) = (sc); 1; })
-#define kbd_unexpected_up(kc) (0200)
-#define kbd_leds(leds) do {} while (0)
-#define kbd_init_hw() l7200kbd_init_hw()
-#define kbd_sysrq_xlate ((unsigned char *)NULL)
-#define kbd_disable_irq() disable_irq(IRQ_GCTC2)
-#define kbd_enable_irq() enable_irq(IRQ_GCTC2)
-
-#define SYSRQ_KEY 13
+++ /dev/null
-/*
- * linux/include/asm-arm/arch-nexuspci/ide.h
- *
- * Copyright (c) 1998 Russell King
- *
- * Modifications:
- * 29-07-1998 RMK Major re-work of IDE architecture specific code
- */
-#include <asm/irq.h>
-
-/*
- * Set up a hw structure for a specified data port, control port and IRQ.
- * This should follow whatever the default interface uses.
- */
-static inline void ide_init_hwif_ports(hw_regs_t *hw, unsigned long data_port,
- unsigned long ctrl_port, int *irq)
-{
- unsigned long reg = data_port;
- int i;
-
- for (i = IDE_DATA_OFFSET; i <= IDE_STATUS_OFFSET; i++) {
- hw->io_ports[i] = reg;
- reg += 1;
- }
- hw->io_ports[IDE_CONTROL_OFFSET] = ctrl_port;
- if (irq)
- *irq = 0;
-}
-
-/*
- * This registers the standard ports for this architecture with the IDE
- * driver.
- */
-static __inline__ void ide_init_default_hwifs(void)
-{
- /* There are no standard ports */
-}
+++ /dev/null
-/*
- * linux/include/asm-arm/arch-omap/omap-h2.h
- *
- * Hardware definitions for TI OMAP1610 H2 board.
- *
- * Cleanup for Linux-2.6 by Dirk Behme <dirk.behme@de.bosch.com>
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by the
- * Free Software Foundation; either version 2 of the License, or (at your
- * option) any later version.
- *
- * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
- * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
- * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
- * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
- * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
- * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
- * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
- * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
- * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- *
- * You should have received a copy of the GNU General Public License along
- * with this program; if not, write to the Free Software Foundation, Inc.,
- * 675 Mass Ave, Cambridge, MA 02139, USA.
- */
-
-#ifndef __ASM_ARCH_OMAP_H2_H
-#define __ASM_ARCH_OMAP_H2_H
-
-/* Placeholder for H2 specific defines */
-
-#endif /* __ASM_ARCH_OMAP_H2_H */
-
+++ /dev/null
-/*
- * linux/include/asm-arm/arch-omap/omap-innovator.h
- *
- * Copyright (C) 2001 RidgeRun, Inc.
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by the
- * Free Software Foundation; either version 2 of the License, or (at your
- * option) any later version.
- *
- * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
- * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
- * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
- * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
- * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
- * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
- * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
- * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
- * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- *
- * You should have received a copy of the GNU General Public License along
- * with this program; if not, write to the Free Software Foundation, Inc.,
- * 675 Mass Ave, Cambridge, MA 02139, USA.
- */
-#ifndef __ASM_ARCH_OMAP_INNOVATOR_H
-#define __ASM_ARCH_OMAP_INNOVATOR_H
-
-#if defined (CONFIG_ARCH_OMAP1510)
-
-/*
- * ---------------------------------------------------------------------------
- * OMAP-1510 FPGA
- * ---------------------------------------------------------------------------
- */
-#define OMAP1510P1_FPGA_BASE 0xE8000000 /* Virtual */
-#define OMAP1510P1_FPGA_SIZE SZ_4K
-#define OMAP1510P1_FPGA_START 0x08000000 /* Physical */
-
-/* Revision */
-#define OMAP1510P1_FPGA_REV_LOW (OMAP1510P1_FPGA_BASE + 0x0)
-#define OMAP1510P1_FPGA_REV_HIGH (OMAP1510P1_FPGA_BASE + 0x1)
-
-#define OMAP1510P1_FPGA_LCD_PANEL_CONTROL (OMAP1510P1_FPGA_BASE + 0x2)
-#define OMAP1510P1_FPGA_LED_DIGIT (OMAP1510P1_FPGA_BASE + 0x3)
-#define INNOVATOR_FPGA_HID_SPI (OMAP1510P1_FPGA_BASE + 0x4)
-#define OMAP1510P1_FPGA_POWER (OMAP1510P1_FPGA_BASE + 0x5)
-
-/* Interrupt status */
-#define OMAP1510P1_FPGA_ISR_LO (OMAP1510P1_FPGA_BASE + 0x6)
-#define OMAP1510P1_FPGA_ISR_HI (OMAP1510P1_FPGA_BASE + 0x7)
-
-/* Interrupt mask */
-#define OMAP1510P1_FPGA_IMR_LO (OMAP1510P1_FPGA_BASE + 0x8)
-#define OMAP1510P1_FPGA_IMR_HI (OMAP1510P1_FPGA_BASE + 0x9)
-
-/* Reset registers */
-#define OMAP1510P1_FPGA_HOST_RESET (OMAP1510P1_FPGA_BASE + 0xa)
-#define OMAP1510P1_FPGA_RST (OMAP1510P1_FPGA_BASE + 0xb)
-
-#define OMAP1510P1_FPGA_AUDIO (OMAP1510P1_FPGA_BASE + 0xc)
-#define OMAP1510P1_FPGA_DIP (OMAP1510P1_FPGA_BASE + 0xe)
-#define OMAP1510P1_FPGA_FPGA_IO (OMAP1510P1_FPGA_BASE + 0xf)
-#define OMAP1510P1_FPGA_UART1 (OMAP1510P1_FPGA_BASE + 0x14)
-#define OMAP1510P1_FPGA_UART2 (OMAP1510P1_FPGA_BASE + 0x15)
-#define OMAP1510P1_FPGA_OMAP1510_STATUS (OMAP1510P1_FPGA_BASE + 0x16)
-#define OMAP1510P1_FPGA_BOARD_REV (OMAP1510P1_FPGA_BASE + 0x18)
-#define OMAP1510P1_PPT_DATA (OMAP1510P1_FPGA_BASE + 0x100)
-#define OMAP1510P1_PPT_STATUS (OMAP1510P1_FPGA_BASE + 0x101)
-#define OMAP1510P1_PPT_CONTROL (OMAP1510P1_FPGA_BASE + 0x102)
-
-#define OMAP1510P1_FPGA_TOUCHSCREEN (OMAP1510P1_FPGA_BASE + 0x204)
-
-#define INNOVATOR_FPGA_INFO (OMAP1510P1_FPGA_BASE + 0x205)
-#define INNOVATOR_FPGA_LCD_BRIGHT_LO (OMAP1510P1_FPGA_BASE + 0x206)
-#define INNOVATOR_FPGA_LCD_BRIGHT_HI (OMAP1510P1_FPGA_BASE + 0x207)
-#define INNOVATOR_FPGA_LED_GRN_LO (OMAP1510P1_FPGA_BASE + 0x208)
-#define INNOVATOR_FPGA_LED_GRN_HI (OMAP1510P1_FPGA_BASE + 0x209)
-#define INNOVATOR_FPGA_LED_RED_LO (OMAP1510P1_FPGA_BASE + 0x20a)
-#define INNOVATOR_FPGA_LED_RED_HI (OMAP1510P1_FPGA_BASE + 0x20b)
-#define INNOVATOR_FPGA_CAM_USB_CONTROL (OMAP1510P1_FPGA_BASE + 0x20c)
-#define INNOVATOR_FPGA_EXP_CONTROL (OMAP1510P1_FPGA_BASE + 0x20d)
-#define INNOVATOR_FPGA_ISR2 (OMAP1510P1_FPGA_BASE + 0x20e)
-#define INNOVATOR_FPGA_IMR2 (OMAP1510P1_FPGA_BASE + 0x210)
-
-#define OMAP1510P1_FPGA_ETHR_START (OMAP1510P1_FPGA_START + 0x300)
-#define OMAP1510P1_FPGA_ETHR_BASE (OMAP1510P1_FPGA_BASE + 0x300)
-
-/*
- * Power up Giga UART driver, turn on HID clock.
- * Turn off BT power, since we're not using it and it
- * draws power.
- */
-#define OMAP1510P1_FPGA_RESET_VALUE 0x42
-
-#define OMAP1510P1_FPGA_PCR_IF_PD0 (1 << 7)
-#define OMAP1510P1_FPGA_PCR_COM2_EN (1 << 6)
-#define OMAP1510P1_FPGA_PCR_COM1_EN (1 << 5)
-#define OMAP1510P1_FPGA_PCR_EXP_PD0 (1 << 4)
-#define OMAP1510P1_FPGA_PCR_EXP_PD1 (1 << 3)
-#define OMAP1510P1_FPGA_PCR_48MHZ_CLK (1 << 2)
-#define OMAP1510P1_FPGA_PCR_4MHZ_CLK (1 << 1)
-#define OMAP1510P1_FPGA_PCR_RSRVD_BIT0 (1 << 0)
-
-/*
- * Innovator/OMAP1510 FPGA HID register bit definitions
- */
-#define FPGA_HID_SCLK (1<<0) /* output */
-#define FPGA_HID_MOSI (1<<1) /* output */
-#define FPGA_HID_nSS (1<<2) /* output 0/1 chip idle/select */
-#define FPGA_HID_nHSUS (1<<3) /* output 0/1 host active/suspended */
-#define FPGA_HID_MISO (1<<4) /* input */
-#define FPGA_HID_ATN (1<<5) /* input 0/1 chip idle/ATN */
-#define FPGA_HID_rsrvd (1<<6)
-#define FPGA_HID_RESETn (1<<7) /* output - 0/1 USAR reset/run */
-
-#ifndef OMAP_SDRAM_DEVICE
-#define OMAP_SDRAM_DEVICE D256M_1X16_4B
-#endif
-
-#define OMAP1510P1_IMIF_PRI_VALUE 0x00
-#define OMAP1510P1_EMIFS_PRI_VALUE 0x00
-#define OMAP1510P1_EMIFF_PRI_VALUE 0x00
-
-/*
- * These definitions define an area of FLASH set aside
- * for the use of MTD/JFFS2. This is the area of flash
- * that a JFFS2 filesystem will reside which is mounted
- * at boot with the "root=/dev/mtdblock/0 rw"
- * command line option. The flash address used here must
- * fall within the legal range defined by rrload for storing
- * the filesystem component. This address will be sufficiently
- * deep into the overall flash range to avoid the other
- * components also stored in flash such as the bootloader,
- * the bootloader params, and the kernel.
- * The SW2 settings for the map below are:
- * 1 off, 2 off, 3 on, 4 off.
- */
-
-/* Intel flash_0, partitioned as expected by rrload */
-#define OMAP_FLASH_0_BASE 0xD8000000
-#define OMAP_FLASH_0_START 0x00000000
-#define OMAP_FLASH_0_SIZE SZ_16M
-
-/* Intel flash_1, used for cramfs or other flash file systems */
-#define OMAP_FLASH_1_BASE 0xD9000000
-#define OMAP_FLASH_1_START 0x01000000
-#define OMAP_FLASH_1_SIZE SZ_16M
-
-/* The FPGA IRQ is cascaded through GPIO_13 */
-#define INT_FPGA (IH_GPIO_BASE + 13)
-
-/* IRQ Numbers for interrupts muxed through the FPGA */
-#define IH_FPGA_BASE IH_BOARD_BASE
-#define INT_FPGA_ATN (IH_FPGA_BASE + 0)
-#define INT_FPGA_ACK (IH_FPGA_BASE + 1)
-#define INT_FPGA2 (IH_FPGA_BASE + 2)
-#define INT_FPGA3 (IH_FPGA_BASE + 3)
-#define INT_FPGA4 (IH_FPGA_BASE + 4)
-#define INT_FPGA5 (IH_FPGA_BASE + 5)
-#define INT_FPGA6 (IH_FPGA_BASE + 6)
-#define INT_FPGA7 (IH_FPGA_BASE + 7)
-#define INT_FPGA8 (IH_FPGA_BASE + 8)
-#define INT_FPGA9 (IH_FPGA_BASE + 9)
-#define INT_FPGA10 (IH_FPGA_BASE + 10)
-#define INT_FPGA11 (IH_FPGA_BASE + 11)
-#define INT_FPGA12 (IH_FPGA_BASE + 12)
-#define INT_ETHER (IH_FPGA_BASE + 13)
-#define INT_FPGAUART1 (IH_FPGA_BASE + 14)
-#define INT_FPGAUART2 (IH_FPGA_BASE + 15)
-#define INT_FPGA_TS (IH_FPGA_BASE + 16)
-#define INT_FPGA17 (IH_FPGA_BASE + 17)
-#define INT_FPGA_CAM (IH_FPGA_BASE + 18)
-#define INT_FPGA_RTC_A (IH_FPGA_BASE + 19)
-#define INT_FPGA_RTC_B (IH_FPGA_BASE + 20)
-#define INT_FPGA_CD (IH_FPGA_BASE + 21)
-#define INT_FPGA22 (IH_FPGA_BASE + 22)
-#define INT_FPGA23 (IH_FPGA_BASE + 23)
-
-#define NR_FPGA_IRQS 24
-
-#define MAXIRQNUM (IH_FPGA_BASE + NR_FPGA_IRQS - 1)
-#define MAXFIQNUM MAXIRQNUM
-#define MAXSWINUM MAXIRQNUM
-
-#define NR_IRQS 256
-
-#ifndef __ASSEMBLY__
-void fpga_write(unsigned char val, int reg);
-unsigned char fpga_read(int reg);
-#endif
-
-#elif defined (CONFIG_ARCH_OMAP1610)
-
-/* At OMAP1610 Innovator the Ethernet is directly connected to CS1 */
-#define OMAP1610_ETHR_BASE 0xE8000000
-#define OMAP1610_ETHR_SIZE SZ_4K
-#define OMAP1610_ETHR_START 0x04000000
-
-/* Intel STRATA NOR flash at CS3 */
-#define OMAP1610_NOR_FLASH_BASE 0xD8000000
-#define OMAP1610_NOR_FLASH_SIZE SZ_32M
-#define OMAP1610_NOR_FLASH_START 0x0C000000
-
-#define MAXIRQNUM (IH_BOARD_BASE)
-#define MAXFIQNUM MAXIRQNUM
-#define MAXSWINUM MAXIRQNUM
-
-#define NR_IRQS (MAXIRQNUM + 1)
-
-#else
-#error "Only OMAP1510 and OMAP1610 Innovator supported!"
-#endif
-#endif
+++ /dev/null
-/*
- * linux/include/asm-arm/arch-omap/omap-perseus2.h
- *
- * Copyright 2003 by Texas Instruments Incorporated
- * OMAP730 / P2-sample additions
- * Author: Jean Pihet
- *
- * Copyright (C) 2001 RidgeRun, Inc. (http://www.ridgerun.com)
- * Author: RidgeRun, Inc.
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by the
- * Free Software Foundation; either version 2 of the License, or (at your
- * option) any later version.
- *
- * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
- * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
- * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
- * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
- * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
- * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
- * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
- * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
- * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- *
- * You should have received a copy of the GNU General Public License along
- * with this program; if not, write to the Free Software Foundation, Inc.,
- * 675 Mass Ave, Cambridge, MA 02139, USA.
- */
-#ifndef __ASM_ARCH_OMAP_P2SAMPLE_H
-#define __ASM_ARCH_OMAP_P2SAMPLE_H
-
-#if defined(CONFIG_ARCH_OMAP730) && defined (CONFIG_MACH_OMAP_PERSEUS2)
-
-/*
- * NOTE: ALL DEFINITIONS IN THIS FILE NEED TO BE PREFIXED BY IDENTIFIER
- * P2SAMPLE_ since they are specific to the EVM and not the chip.
- */
-
-/* ---------------------------------------------------------------------------
- * OMAP730 Debug Board FPGA
- * ---------------------------------------------------------------------------
- *
- */
-
-/* maps in the FPGA registers and the ETHR registers */
-#define OMAP730_FPGA_BASE 0xE8000000 /* VA */
-#define OMAP730_FPGA_SIZE SZ_4K /* SIZE */
-#define OMAP730_FPGA_START 0x04000000 /* PA */
-
-#define OMAP730_FPGA_ETHR_START OMAP730_FPGA_START
-#define OMAP730_FPGA_ETHR_BASE OMAP730_FPGA_BASE
-#define OMAP730_FPGA_FPGA_REV (OMAP730_FPGA_BASE + 0x10) /* FPGA Revision */
-#define OMAP730_FPGA_BOARD_REV (OMAP730_FPGA_BASE + 0x12) /* Board Revision */
-#define OMAP730_FPGA_GPIO (OMAP730_FPGA_BASE + 0x14) /* GPIO outputs */
-#define OMAP730_FPGA_LEDS (OMAP730_FPGA_BASE + 0x16) /* LEDs outputs */
-#define OMAP730_FPGA_MISC_INPUTS (OMAP730_FPGA_BASE + 0x18) /* Misc inputs */
-#define OMAP730_FPGA_LAN_STATUS (OMAP730_FPGA_BASE + 0x1A) /* LAN Status line */
-#define OMAP730_FPGA_LAN_RESET (OMAP730_FPGA_BASE + 0x1C) /* LAN Reset line */
-
-// LEDs definition on debug board (16 LEDs)
-#define OMAP730_FPGA_LED_CLAIMRELEASE (1 << 15)
-#define OMAP730_FPGA_LED_STARTSTOP (1 << 14)
-#define OMAP730_FPGA_LED_HALTED (1 << 13)
-#define OMAP730_FPGA_LED_IDLE (1 << 12)
-#define OMAP730_FPGA_LED_TIMER (1 << 11)
-// cpu0 load-meter LEDs
-#define OMAP730_FPGA_LOAD_METER (1 << 0) // A bit of fun on our board ...
-#define OMAP730_FPGA_LOAD_METER_SIZE 11
-#define OMAP730_FPGA_LOAD_METER_MASK ((1 << OMAP730_FPGA_LOAD_METER_SIZE) - 1)
-
-#ifndef OMAP_SDRAM_DEVICE
-#define OMAP_SDRAM_DEVICE D256M_1X16_4B
-#endif
-
-
-/*
- * These definitions define an area of FLASH set aside
- * for the use of MTD/JFFS2. This is the area of flash
- * that a JFFS2 filesystem will reside which is mounted
- * at boot with the "root=/dev/mtdblock/0 rw"
- * command line option.
- */
-
-/* Intel flash_0, partitioned as expected by rrload */
-#define OMAP_FLASH_0_BASE 0xD8000000 /* VA */
-#define OMAP_FLASH_0_START 0x00000000 /* PA */
-#define OMAP_FLASH_0_SIZE SZ_32M
-
-/* 2.9.6 Traffic Controller Memory Interface Registers */
-#define OMAP_FLASH_CFG_0 0xfffecc10
-#define OMAP_FLASH_ACFG_0 0xfffecc50
-
-#define OMAP_FLASH_CFG_1 0xfffecc14
-#define OMAP_FLASH_ACFG_1 0xfffecc54
-
-/*
- * Configuration Registers
- */
-#define PERSEUS2_CONFIG_BASE 0xfffe1000
-#define PERSEUS2_IO_CONF_0 0xfffe1070
-#define PERSEUS2_IO_CONF_1 0xfffe1074
-#define PERSEUS2_IO_CONF_2 0xfffe1078
-#define PERSEUS2_IO_CONF_3 0xfffe107c
-#define PERSEUS2_IO_CONF_4 0xfffe1080
-#define PERSEUS2_IO_CONF_5 0xfffe1084
-#define PERSEUS2_IO_CONF_6 0xfffe1088
-#define PERSEUS2_IO_CONF_7 0xfffe108c
-#define PERSEUS2_IO_CONF_8 0xfffe1090
-#define PERSEUS2_IO_CONF_9 0xfffe1094
-#define PERSEUS2_IO_CONF_10 0xfffe1098
-#define PERSEUS2_IO_CONF_11 0xfffe109c
-#define PERSEUS2_IO_CONF_12 0xfffe10a0
-#define PERSEUS2_IO_CONF_13 0xfffe10a4
-
-#define PERSEUS2_MODE_1 0xfffe1010
-#define PERSEUS2_MODE_2 0xfffe1014
-
-/* CSMI specials: in terms of base + offset */
-#define PERSEUS2_MODE2_OFFSET 0x14
-
-/* DSP control: ICR registers */
-#define ICR_BASE 0xfffbb800
-/* M_CTL */
-#define DSP_M_CTL ((volatile __u16 *)0xfffbb804)
-/* DSP control: MMU registers */
-#define DSP_MMU_BASE ((volatile __u16 *)0xfffed200)
-
-/* The Ethernet Controller IRQ is cascaded to MPU_EXT_nIRQ througb the FPGA */
-#define INT_ETHER INT_730_MPU_EXT_NIRQ
-
-#define MAXIRQNUM IH_BOARD_BASE
-#define MAXFIQNUM MAXIRQNUM
-#define MAXSWINUM MAXIRQNUM
-
-#define NR_IRQS (MAXIRQNUM + 1)
-
-#ifndef __ASSEMBLY__
-void fpga_write(unsigned char val, int reg);
-unsigned char fpga_read(int reg);
-#endif
-
-/* PCC_UPLD control register: OMAP730 */
-#define PCC_UPLD_CTRL_REG_BASE (0xfffe0900)
-#define PCC_UPLD_CTRL_REG (volatile __u16 *)(PCC_UPLD_CTRL_REG_BASE + 0x00)
-
-#else
-#error "Only OMAP730 Perseus2 supported!"
-#endif
-
-#endif
+++ /dev/null
-/*
- * linux/include/asm-arm/arch-pxa/ide.h
- *
- * Author: George Davis
- * Created: Jan 10, 2002
- * Copyright: MontaVista Software Inc.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
- *
- * Originally based upon linux/include/asm-arm/arch-sa1100/ide.h
- *
- */
-
-#include <asm/irq.h>
-#include <asm/hardware.h>
-#include <asm/mach-types.h>
-
-
-/*
- * Set up a hw structure for a specified data port, control port and IRQ.
- * This should follow whatever the default interface uses.
- */
-static inline void ide_init_hwif_ports(hw_regs_t *hw, unsigned long data_port,
- unsigned long ctrl_port, int *irq)
-{
- unsigned long reg = data_port;
- int i;
- int regincr = 1;
-
- memset(hw, 0, sizeof(*hw));
-
- for (i = IDE_DATA_OFFSET; i <= IDE_STATUS_OFFSET; i++) {
- hw->io_ports[i] = reg;
- reg += regincr;
- }
-
- hw->io_ports[IDE_CONTROL_OFFSET] = ctrl_port;
-
- if (irq)
- *irq = 0;
-}
-
-
-/*
- * Register the standard ports for this architecture with the IDE driver.
- */
-static __inline__ void
-ide_init_default_hwifs(void)
-{
- /* Nothing to declare... */
-}
+++ /dev/null
-/*
- * linux/include/asm-arm/arch-pxa/keyboard.h
- *
- * This file contains the architecture specific keyboard definitions
- */
-
-#ifndef _PXA_KEYBOARD_H
-#define _PXA_KEYBOARD_H
-
-#include <asm/mach-types.h>
-#include <asm/hardware.h>
-
-extern struct kbd_ops_struct *kbd_ops;
-
-#define kbd_disable_irq() do { } while(0);
-#define kbd_enable_irq() do { } while(0);
-
-extern int sa1111_kbd_init_hw(void);
-
-static inline void kbd_init_hw(void)
-{
- if (machine_is_lubbock())
- sa1111_kbd_init_hw();
-}
-
-
-#endif /* _PXA_KEYBOARD_H */
-
+++ /dev/null
-/*
- * linux/include/asm-arm/arch-rpc/ide.h
- *
- * Copyright (C) 1997 Russell King
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
- * Modifications:
- * 29-07-1998 RMK Major re-work of IDE architecture specific code
- */
-#include <asm/irq.h>
-
-/*
- * Set up a hw structure for a specified data port, control port and IRQ.
- * This should follow whatever the default interface uses.
- */
-static inline void ide_init_hwif_ports(hw_regs_t *hw, unsigned long data_port,
- unsigned long ctrl_port, int *irq)
-{
- unsigned long reg = data_port;
- int i;
-
- memset(hw, 0, sizeof(*hw));
-
- for (i = IDE_DATA_OFFSET; i <= IDE_STATUS_OFFSET; i++) {
- hw->io_ports[i] = reg;
- reg += 1;
- }
- hw->io_ports[IDE_CONTROL_OFFSET] = ctrl_port;
- if (irq)
- *irq = 0;
-}
-
-/*
- * This registers the standard ports for this architecture with the IDE
- * driver.
- */
-static __inline__ void
-ide_init_default_hwifs(void)
-{
- hw_regs_t hw;
-
- ide_init_hwif_ports(&hw, 0x1f0, 0x3f6, NULL);
- hw.irq = IRQ_HARDDISK;
- ide_register_hw(&hw, NULL);
-}
+++ /dev/null
-/* linux/include/asm-arm/arch-s3c2410/ide.h
- *
- * Copyright (C) 1997 Russell King
- * Copyright (C) 2003 Simtec Electronics
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
- * Modifications:
- * 29-07-1998 RMK Major re-work of IDE architecture specific code
- * 16-05-2003 BJD Changed to work with BAST IDE ports
- * 04-09-2003 BJD Modifications for V2.6
- */
-
-#ifndef __ASM_ARCH_IDE_H
-#define __ASM_ARCH_IDE_H
-
-#include <asm/irq.h>
-
-/*
- * Set up a hw structure for a specified data port, control port and IRQ.
- * This should follow whatever the default interface uses.
- */
-
-static inline void ide_init_hwif_ports(hw_regs_t *hw, unsigned long data_port,
- unsigned long ctrl_port, int *irq)
-{
- unsigned long reg = data_port;
- int i;
-
- memset(hw, 0, sizeof(*hw));
-
- for (i = IDE_DATA_OFFSET; i <= IDE_STATUS_OFFSET; i++) {
- hw->io_ports[i] = reg;
- reg += 1;
- }
- hw->io_ports[IDE_CONTROL_OFFSET] = ctrl_port;
- if (irq)
- *irq = 0;
-}
-
-/* we initialise our ide devices from the main ide core, due to problems
- * with doing it in this function
-*/
-
-#define ide_init_default_hwifs() do { } while(0)
-
-#endif /* __ASM_ARCH_IDE_H */
+++ /dev/null
-/*
- * linux/include/asm-arm/arch-sa1100/keyboard.h
- * Created 16 Dec 1999 by Nicolas Pitre <nico@cam.org>
- * This file contains the SA1100 architecture specific keyboard definitions
- */
-#ifndef _SA1100_KEYBOARD_H
-#define _SA1100_KEYBOARD_H
-
-#include <linux/config.h>
-#include <asm/mach-types.h>
-
-extern void gc_kbd_init_hw(void);
-extern void smartio_kbd_init_hw(void);
-
-static inline void kbd_init_hw(void)
-{
- if (machine_is_graphicsclient())
- gc_kbd_init_hw();
- if (machine_is_adsbitsy())
- smartio_kbd_init_hw();
-}
-
-#endif /* _SA1100_KEYBOARD_H */
+++ /dev/null
-/*
- * linux/include/asm-arm/arch-shark/ide.h
- *
- * by Alexander Schulz
- *
- * derived from:
- * linux/include/asm-arm/arch-ebsa285/ide.h
- * Copyright (c) 1998 Russell King
- */
-
-#include <asm/irq.h>
-
-/*
- * Set up a hw structure for a specified data port, control port and IRQ.
- * This should follow whatever the default interface uses.
- */
-static inline void ide_init_hwif_ports(hw_regs_t *hw, unsigned long data_port,
- unsigned long ctrl_port, int *irq)
-{
- unsigned long reg = data_port;
- int i;
-
- memset(hw, 0, sizeof(*hw));
-
- for (i = IDE_DATA_OFFSET; i <= IDE_STATUS_OFFSET; i++) {
- hw->io_ports[i] = reg;
- reg += 1;
- }
- hw->io_ports[IDE_CONTROL_OFFSET] = ctrl_port;
- if (irq)
- *irq = 0;
-}
-
-/*
- * This registers the standard ports for this architecture with the IDE
- * driver.
- */
-static __inline__ void
-ide_init_default_hwifs(void)
-{
- hw_regs_t hw;
-
- ide_init_hwif_ports(&hw, 0x1f0, 0x3f6, NULL);
- hw.irq = 14;
- ide_register_hw(&hw,NULL);
-}
-
+++ /dev/null
-/*
- * linux/include/asm-arm/arch-shark/keyboard.h
- * by Alexander Schulz
- *
- * Derived from linux/include/asm-arm/arch-ebsa285/keyboard.h
- * (C) 1998 Russell King
- * (C) 1998 Phil Blundell
- */
-#include <linux/config.h>
-#include <linux/ioport.h>
-#include <asm/irq.h>
-#include <asm/io.h>
-#include <asm/system.h>
-
-#define KEYBOARD_IRQ IRQ_ISA_KEYBOARD
-#define NR_SCANCODES 128
-
-#define kbd_disable_irq() do { } while (0)
-#define kbd_enable_irq() do { } while (0)
-
-extern int pckbd_setkeycode(unsigned int scancode, unsigned int keycode);
-extern int pckbd_getkeycode(unsigned int scancode);
-extern int pckbd_translate(unsigned char scancode, unsigned char *keycode,
- char raw_mode);
-extern char pckbd_unexpected_up(unsigned char keycode);
-extern void pckbd_leds(unsigned char leds);
-extern void pckbd_init_hw(void);
-extern unsigned char pckbd_sysrq_xlate[128];
-
-static inline void kbd_init_hw(void)
-{
- k_setkeycode = pckbd_setkeycode;
- k_getkeycode = pckbd_getkeycode;
- k_translate = pckbd_translate;
- k_unexpected_up = pckbd_unexpected_up;
- k_leds = pckbd_leds;
-#ifdef CONFIG_MAGIC_SYSRQ
- k_sysrq_key = 0x54;
- k_sysrq_xlate = pckbd_sysrq_xlate;
-#endif
- pckbd_init_hw();
-}
-
-/*
- * PC Keyboard specifics
- */
-
-/* resource allocation */
-#define kbd_request_region() request_region(0x60, 16, "keyboard")
-#define kbd_request_irq(handler) request_irq(KEYBOARD_IRQ, handler, 0, \
- "keyboard", NULL)
-
-/* How to access the keyboard macros on this platform. */
-#define kbd_read_input() inb(KBD_DATA_REG)
-#define kbd_read_status() inb(KBD_STATUS_REG)
-#define kbd_write_output(val) outb(val, KBD_DATA_REG)
-#define kbd_write_command(val) outb(val, KBD_CNTL_REG)
-
-/* Some stoneage hardware needs delays after some operations. */
-#define kbd_pause() do { } while(0)
-
-/*
- * Machine specific bits for the PS/2 driver
- */
-#define aux_request_irq(hand, dev_id) \
- request_irq(AUX_IRQ, hand, SA_SHIRQ, "PS/2 Mouse", dev_id)
-
-#define aux_free_irq(dev_id) free_irq(AUX_IRQ, dev_id)
+++ /dev/null
-/*
- * linux/include/asm-arm/arch-tbox/ide.h
- */
+++ /dev/null
-#ifndef _ASM_ARM_RELAY_H
-#define _ASM_ARM_RELAY_H
-
-#include <asm-generic/relay.h>
-#endif
+++ /dev/null
-#ifndef _ARM_RMAP_H
-#define _ARM_RMAP_H
-
-#include <asm-generic/rmap.h>
-
-#endif /* _ARM_RMAP_H */
+++ /dev/null
-#ifndef _ASM_ARM_RELAY_H
-#define _ASM_ARM_RELAY_H
-
-#include <asm-generic/relay.h>
-#endif
+++ /dev/null
-#ifndef _ARM_RMAP_H
-#define _ARM_RMAP_H
-
-/*
- * linux/include/asm-arm26/proc-armv/rmap.h
- *
- * Architecture dependant parts of the reverse mapping code,
- *
- * ARM is different since hardware page tables are smaller than
- * the page size and Linux uses a "duplicate" one with extra info.
- * For rmap this means that the first 2 kB of a page are the hardware
- * page tables and the last 2 kB are the software page tables.
- */
-
-static inline void pgtable_add_rmap(struct page *page, struct mm_struct * mm, unsigned long address)
-{
- page->mapping = (void *)mm;
- page->index = address & ~((PTRS_PER_PTE * PAGE_SIZE) - 1);
- inc_page_state(nr_page_table_pages);
-}
-
-static inline void pgtable_remove_rmap(struct page *page)
-{
- page->mapping = NULL;
- page->index = 0;
- dec_page_state(nr_page_table_pages);
-}
-
-static inline struct mm_struct * ptep_to_mm(pte_t * ptep)
-{
- struct page * page = virt_to_page(ptep);
- return (struct mm_struct *)page->mapping;
-}
-
-/* The page table takes half of the page */
-#define PTE_MASK ((PAGE_SIZE / 2) - 1)
-
-static inline unsigned long ptep_to_address(pte_t * ptep)
-{
- struct page * page = virt_to_page(ptep);
- unsigned long low_bits;
-
- low_bits = ((unsigned long)ptep & PTE_MASK) * PTRS_PER_PTE;
- return page->index + low_bits;
-}
-
-//FIXME!!! IS these correct?
-static inline pte_addr_t ptep_to_paddr(pte_t *ptep)
-{
- return (pte_addr_t)ptep;
-}
-
-static inline pte_t *rmap_ptep_map(pte_addr_t pte_paddr)
-{
- return (pte_t *)pte_paddr;
-}
-
-static inline void rmap_ptep_unmap(pte_t *pte)
-{
- return;
-}
-
-
-//#include <asm-generic/rmap.h>
-
-#endif /* _ARM_RMAP_H */
+++ /dev/null
-#ifndef _ASM_CRIS_RELAY_H
-#define _ASM_CRIS_RELAY_H
-
-#include <asm-generic/relay.h>
-#endif
+++ /dev/null
-#ifndef _CRIS_RMAP_H
-#define _CRIS_RMAP_H
-
-/* nothing to see, move along :) */
-#include <asm-generic/rmap.h>
-
-#endif
+++ /dev/null
-#ifndef _ASM_GENERIC_RELAY_H
-#define _ASM_GENERIC_RELAY_H
-/*
- * linux/include/asm-generic/relay.h
- *
- * Copyright (C) 2002, 2003 - Tom Zanussi (zanussi@us.ibm.com), IBM Corp
- * Copyright (C) 2002 - Karim Yaghmour (karim@opersys.com)
- *
- * Architecture-independent definitions for relayfs
- */
-
-#include <linux/relayfs_fs.h>
-
-/**
- * get_time_delta - utility function for getting time delta
- * @now: pointer to a timeval struct that may be given current time
- * @rchan: the channel
- *
- * Returns the time difference between the current time and the buffer
- * start time.
- */
-static inline u32
-get_time_delta(struct timeval *now, struct rchan *rchan)
-{
- u32 time_delta;
-
- do_gettimeofday(now);
- time_delta = calc_time_delta(now, &rchan->buf_start_time);
-
- return time_delta;
-}
-
-/**
- * get_timestamp - utility function for getting a time and TSC pair
- * @now: current time
- * @tsc: the TSC associated with now
- * @rchan: the channel
- *
- * Sets the value pointed to by now to the current time. Value pointed to
- * by tsc is not set since there is no generic TSC support.
- */
-static inline void
-get_timestamp(struct timeval *now,
- u32 *tsc,
- struct rchan *rchan)
-{
- do_gettimeofday(now);
-}
-
-/**
- * get_time_or_tsc: - Utility function for getting a time or a TSC.
- * @now: current time
- * @tsc: current TSC
- * @rchan: the channel
- *
- * Sets the value pointed to by now to the current time.
- */
-static inline void
-get_time_or_tsc(struct timeval *now,
- u32 *tsc,
- struct rchan *rchan)
-{
- do_gettimeofday(now);
-}
-
-/**
- * have_tsc - does this platform have a useable TSC?
- *
- * Returns 0.
- */
-static inline int
-have_tsc(void)
-{
- return 0;
-}
-#endif
+++ /dev/null
-#ifndef _GENERIC_RMAP_H
-#define _GENERIC_RMAP_H
-/*
- * linux/include/asm-generic/rmap.h
- *
- * Architecture dependent parts of the reverse mapping code,
- * this version should work for most architectures with a
- * 'normal' page table layout.
- *
- * We use the struct page of the page table page to find out
- * the process and full address of a page table entry:
- * - page->mapping points to the process' mm_struct
- * - page->index has the high bits of the address
- * - the lower bits of the address are calculated from the
- * offset of the page table entry within the page table page
- *
- * For CONFIG_HIGHPTE, we need to represent the address of a pte in a
- * scalar pte_addr_t. The pfn of the pte's page is shifted left by PAGE_SIZE
- * bits and is then ORed with the byte offset of the pte within its page.
- *
- * For CONFIG_HIGHMEM4G, the pte_addr_t is 32 bits. 20 for the pfn, 12 for
- * the offset.
- *
- * For CONFIG_HIGHMEM64G, the pte_addr_t is 64 bits. 52 for the pfn, 12 for
- * the offset.
- */
-#include <linux/mm.h>
-
-static inline void pgtable_add_rmap(struct page * page, struct mm_struct * mm, unsigned long address)
-{
-#ifdef BROKEN_PPC_PTE_ALLOC_ONE
- /* OK, so PPC calls pte_alloc() before mem_map[] is setup ... ;( */
- extern int mem_init_done;
-
- if (!mem_init_done)
- return;
-#endif
- page->mapping = (void *)mm;
- page->index = address & ~((PTRS_PER_PTE * PAGE_SIZE) - 1);
- inc_page_state(nr_page_table_pages);
-}
-
-static inline void pgtable_remove_rmap(struct page * page)
-{
- page->mapping = NULL;
- page->index = 0;
- dec_page_state(nr_page_table_pages);
-}
-
-static inline struct mm_struct * ptep_to_mm(pte_t * ptep)
-{
- struct page * page = kmap_atomic_to_page(ptep);
- return (struct mm_struct *) page->mapping;
-}
-
-static inline unsigned long ptep_to_address(pte_t * ptep)
-{
- struct page * page = kmap_atomic_to_page(ptep);
- unsigned long low_bits;
- low_bits = ((unsigned long)ptep & (PTRS_PER_PTE*sizeof(pte_t) - 1))
- * (PAGE_SIZE/sizeof(pte_t));
- return page->index + low_bits;
-}
-
-#ifdef CONFIG_HIGHPTE
-static inline pte_addr_t ptep_to_paddr(pte_t *ptep)
-{
- pte_addr_t paddr;
- paddr = ((pte_addr_t)page_to_pfn(kmap_atomic_to_page(ptep))) << PAGE_SHIFT;
- return paddr + (pte_addr_t)((unsigned long)ptep & ~PAGE_MASK);
-}
-#else
-static inline pte_addr_t ptep_to_paddr(pte_t *ptep)
-{
- return (pte_addr_t)ptep;
-}
-#endif
-
-#ifndef CONFIG_HIGHPTE
-static inline pte_t *rmap_ptep_map(pte_addr_t pte_paddr)
-{
- return (pte_t *)pte_paddr;
-}
-
-static inline void rmap_ptep_unmap(pte_t *pte)
-{
- return;
-}
-#endif
-
-#endif /* _GENERIC_RMAP_H */
+++ /dev/null
-/* AE-3068 board depend header */
-
-/* TIMER rate define */
-#ifdef H8300_TIMER_DEFINE
-#define H8300_TIMER_COUNT_DATA 20000*10/8192
-#define H8300_TIMER_FREQ 20000*1000/8192
-#endif
-
-/* AE-3068 RTL8019AS Config */
-#ifdef H8300_NE_DEFINE
-
-#define NE2000_ADDR 0x200000
-#define NE2000_IRQ 5
-#define NE2000_BYTE volatile unsigned short
-
-#define WCRL 0xfee023
-#define MAR0A 0xffff20
-#define ETCR0A 0xffff24
-#define DTCR0A 0xffff27
-#define MAR0B 0xffff28
-#define DTCR0B 0xffff2f
-
-#define H8300_INIT_NE() \
-do { \
- wordlength = 1; \
- outb_p(0x48, ioaddr + EN0_DCFG); \
-} while(0)
-
-#endif
+++ /dev/null
-/* EDOSK2674 board depend header */
-
-/* TIMER rate define */
-#ifdef H8300_TIMER_DEFINE
-#define H8300_TIMER_COUNT_DATA 33000*10/8192
-#define H8300_TIMER_FREQ 33000*1000/8192
-#endif
-
-/* EDOSK-2674R SMSC Network Controler Target Depend impliments */
-#ifdef H8300_SMSC_DEFINE
-
-#define SMSC_BASE 0xf80000
-#define SMSC_IRQ 16
-
-/* sorry quick hack */
-#if defined(outw)
-# undef outw
-#endif
-#define outw(d,a) edosk2674_smsc_outw(d,(volatile unsigned short *)(a))
-#if defined(inw)
-# undef inw
-#endif
-#define inw(a) edosk2674_smsc_inw((volatile unsigned short *)(a))
-#if defined(outsw)
-# undef outsw
-#endif
-#define outsw(a,p,l) edosk2674_smsc_outsw((volatile unsigned short *)(a),p,l)
-#if defined(insw)
-# undef insw
-#endif
-#define insw(a,p,l) edosk2674_smsc_insw((volatile unsigned short *)(a),p,l)
-
-static inline void edosk2674_smsc_outw(
- unsigned short d,
- volatile unsigned short *a
- )
-{
- *a = (d >> 8) | (d << 8);
-}
-
-static inline unsigned short edosk2674_smsc_inw(
- volatile unsigned short *a
- )
-{
- unsigned short d;
- d = *a;
- return (d >> 8) | (d << 8);
-}
-
-static inline void edosk2674_smsc_outsw(
- volatile unsigned short *a,
- unsigned short *p,
- unsigned long l
- )
-{
- for (; l != 0; --l, p++)
- *a = *p;
-}
-
-static inline void edosk2674_smsc_insw(
- volatile unsigned short *a,
- unsigned short *p,
- unsigned long l
- )
-{
- for (; l != 0; --l, p++)
- *p = *a;
-}
-
-#endif
+++ /dev/null
-/* machine depend header */
-
-/* TIMER rate define */
-#ifdef H8300_TIMER_DEFINE
-#include <linux/config.h>
-#if defined(CONFIG_H83007) || defined(CONFIG_H83068) || defined(CONFIG_H8S2678)
-#define H8300_TIMER_COUNT_DATA CONFIG_CPU_CLOCK*10/8192
-#define H8300_TIMER_FREQ CONFIG_CPU_CLOCK*1000/8192
-#endif
-
-#if defined(CONFIG_H8_3002) || defined(CONFIG_H83048)
-#define H8300_TIMER_COUNT_DATA CONFIG_CPU_CLOCK*10/8
-#define H8300_TIMER_FREQ CONFIG_CPU_CLOCK*1000/8
-#endif
-
-#endif
-
+++ /dev/null
-#include <linux/config.h>
-
-#if defined(CONFIG_H83007) || defined(CONFIG_H83068) || defined(CONFIG_H8S2678)
-#define H8300_TIMER_COUNT_DATA CONFIG_CPU_CLOCK*10/8192
-#define H8300_TIMER_FREQ CONFIG_CPU_CLOCK*1000/8192
-#endif
-
-#if defined(H8_3002) || defined(CONFIG_H83048)
-#define H8300_TIMER_COUNT_DATA CONFIG_CPU_CLOCK*10/8
-#define H8300_TIMER_FREQ CONFIG_CPU_CLOCK*1000/8
-#endif
-
-#if !defined(H8300_TIMER_COUNT_DATA)
-#error illigal configuration
-#endif
+++ /dev/null
-/****************************************************************************/
-
-/*
- * h8300_smsc.h -- SMSC in H8/300H and H8S Evalution Board.
- *
- * (C) Copyright 2003, Yoshinori Sato <ysato@users.sourceforge.jp>
- */
-
-/****************************************************************************/
-#ifndef h8300smsc_h
-#define h8300smsc_h
-/****************************************************************************/
-
-/* Such a description is OK ? */
-#define H8300_SMSC_DEFINE
-#include <asm/machine-depend.h>
-#undef H8300_SMSC_DEFINE
-
-/****************************************************************************/
-#endif /* h8300smsc_h */
+++ /dev/null
-/* H8MAX board depend header */
-
-/* TIMER rate define */
-#ifdef H8300_TIMER_DEFINE
-#define H8300_TIMER_COUNT_DATA 25000*10/8192
-#define H8300_TIMER_FREQ 25000*1000/8192
-#endif
-
-/* H8MAX RTL8019AS Config */
-#ifdef H8300_NE_DEFINE
-
-#define NE2000_ADDR 0x800600
-#define NE2000_IRQ 4
-#define NE2000_IRQ_VECTOR (12 + NE2000_IRQ)
-#define NE2000_BYTE volatile unsigned short
-
-/* sorry quick hack */
-#if defined(outb)
-# undef outb
-#endif
-#define outb(d,a) h8max_outb((d),(a) - NE2000_ADDR)
-#if defined(inb)
-# undef inb
-#endif
-#define inb(a) h8max_inb((a) - NE2000_ADDR)
-#if defined(outb_p)
-# undef outb_p
-#endif
-#define outb_p(d,a) h8max_outb((d),(a) - NE2000_ADDR)
-#if defined(inb_p)
-# undef inb_p
-#endif
-#define inb_p(a) h8max_inb((a) - NE2000_ADDR)
-#if defined(outsw)
-# undef outsw
-#endif
-#define outsw(a,p,l) h8max_outsw((a) - NE2000_ADDR,(unsigned short *)p,l)
-#if defined(insw)
-# undef insw
-#endif
-#define insw(a,p,l) h8max_insw((a) - NE2000_ADDR,(unsigned short *)p,l)
-#if defined(outsb)
-# undef outsb
-#endif
-#define outsb(a,p,l) h8max_outsb((a) - NE2000_ADDR,(unsigned char *)p,l)
-#if defined(insb)
-# undef insb
-#endif
-#define insb(a,p,l) h8max_insb((a) - NE2000_ADDR,(unsigned char *)p,l)
-
-#define H8300_INIT_NE() \
-do { \
- wordlength = 2; \
- h8max_outb(0x49, ioaddr + EN0_DCFG); \
- SA_prom[14] = SA_prom[15] = 0x57;\
-} while(0)
-
-static inline void h8max_outb(unsigned char d,unsigned char a)
-{
- *(unsigned short *)(NE2000_ADDR + (a << 1)) = d;
-}
-
-static inline unsigned char h8max_inb(unsigned char a)
-{
- return *(unsigned char *)(NE2000_ADDR + (a << 1) +1);
-}
-
-static inline void h8max_outsw(unsigned char a,unsigned short *p,unsigned long l)
-{
- unsigned short d;
- for (; l != 0; --l, p++) {
- d = (((*p) >> 8) & 0xff) | ((*p) << 8);
- *(unsigned short *)(NE2000_ADDR + (a << 1)) = d;
- }
-}
-
-static inline void h8max_insw(unsigned char a,unsigned short *p,unsigned long l)
-{
- unsigned short d;
- for (; l != 0; --l, p++) {
- d = *(unsigned short *)(NE2000_ADDR + (a << 1));
- *p = (d << 8)|((d >> 8) & 0xff);
- }
-}
-
-static inline void h8max_outsb(unsigned char a,unsigned char *p,unsigned long l)
-{
- for (; l != 0; --l, p++) {
- *(unsigned short *)(NE2000_ADDR + (a << 1)) = *p;
- }
-}
-
-static inline void h8max_insb(unsigned char a,unsigned char *p,unsigned long l)
-{
- for (; l != 0; --l, p++) {
- *p = *((unsigned char *)(NE2000_ADDR + (a << 1))+1);
- }
-}
-
-#endif
+++ /dev/null
-#ifndef _ASM_H8300_RELAY_H
-#define _ASM_H8300_RELAY_H
-
-#include <asm-generic/relay.h>
-#endif
+++ /dev/null
-#ifndef _ASM_I386_RELAY_H
-#define _ASM_I386_RELAY_H
-/*
- * linux/include/asm-i386/relay.h
- *
- * Copyright (C) 2002, 2003 - Tom Zanussi (zanussi@us.ibm.com), IBM Corp
- * Copyright (C) 2002 - Karim Yaghmour (karim@opersys.com)
- *
- * i386 definitions for relayfs
- */
-
-#include <linux/relayfs_fs.h>
-
-#ifdef CONFIG_X86_TSC
-#include <asm/msr.h>
-
-/**
- * get_time_delta - utility function for getting time delta
- * @now: pointer to a timeval struct that may be given current time
- * @rchan: the channel
- *
- * Returns either the TSC if TSCs are being used, or the time and the
- * time difference between the current time and the buffer start time
- * if TSCs are not being used.
- */
-static inline u32
-get_time_delta(struct timeval *now, struct rchan *rchan)
-{
- u32 time_delta;
-
- if ((using_tsc(rchan) == 1) && cpu_has_tsc)
- rdtscl(time_delta);
- else {
- do_gettimeofday(now);
- time_delta = calc_time_delta(now, &rchan->buf_start_time);
- }
-
- return time_delta;
-}
-
-/**
- * get_timestamp - utility function for getting a time and TSC pair
- * @now: current time
- * @tsc: the TSC associated with now
- * @rchan: the channel
- *
- * Sets the value pointed to by now to the current time and the value
- * pointed to by tsc to the tsc associated with that time, if the
- * platform supports TSC.
- */
-static inline void
-get_timestamp(struct timeval *now,
- u32 *tsc,
- struct rchan *rchan)
-{
- do_gettimeofday(now);
-
- if ((using_tsc(rchan) == 1) && cpu_has_tsc)
- rdtscl(*tsc);
-}
-
-/**
- * get_time_or_tsc - utility function for getting a time or a TSC
- * @now: current time
- * @tsc: current TSC
- * @rchan: the channel
- *
- * Sets the value pointed to by now to the current time or the value
- * pointed to by tsc to the current tsc, depending on whether we're
- * using TSCs or not.
- */
-static inline void
-get_time_or_tsc(struct timeval *now,
- u32 *tsc,
- struct rchan *rchan)
-{
- if ((using_tsc(rchan) == 1) && cpu_has_tsc)
- rdtscl(*tsc);
- else
- do_gettimeofday(now);
-}
-
-/**
- * have_tsc - does this platform have a useable TSC?
- *
- * Returns 1 if this platform has a useable TSC counter for
- * timestamping purposes, 0 otherwise.
- */
-static inline int
-have_tsc(void)
-{
- if (cpu_has_tsc)
- return 1;
- else
- return 0;
-}
-
-#else /* No TSC support (#ifdef CONFIG_X86_TSC) */
-#include <asm-generic/relay.h>
-#endif /* #ifdef CONFIG_X86_TSC */
-#endif
+++ /dev/null
-#ifndef _I386_RMAP_H
-#define _I386_RMAP_H
-
-/* nothing to see, move along */
-#include <asm-generic/rmap.h>
-
-#ifdef CONFIG_HIGHPTE
-static inline pte_t *rmap_ptep_map(pte_addr_t pte_paddr)
-{
- unsigned long pfn = (unsigned long)(pte_paddr >> PAGE_SHIFT);
- unsigned long off = ((unsigned long)pte_paddr) & ~PAGE_MASK;
- return (pte_t *)((char *)kmap_atomic(pfn_to_page(pfn), KM_PTE2) + off);
-}
-
-static inline void rmap_ptep_unmap(pte_t *pte)
-{
- kunmap_atomic(pte, KM_PTE2);
-}
-#endif
-
-#endif
+++ /dev/null
-#ifndef _ASM_IA64_RELAY_H
-#define _ASM_IA64_RELAY_H
-
-#include <asm-generic/relay.h>
-#endif
+++ /dev/null
-#ifndef _ASM_IA64_RMAP_H
-#define _ASM_IA64_RMAP_H
-
-/* nothing to see, move along */
-#include <asm-generic/rmap.h>
-
-#endif /* _ASM_IA64_RMAP_H */
+++ /dev/null
-#ifndef _ASM_M68K_RELAY_H
-#define _ASM_M68K_RELAY_H
-
-#include <asm-generic/relay.h>
-#endif
+++ /dev/null
-#ifndef _M68K_RMAP_H
-#define _M68K_RMAP_H
-
-/* nothing to see, move along */
-#include <asm-generic/rmap.h>
-
-#endif
+++ /dev/null
-#ifndef _ASM_M68KNOMMU_RELAY_H
-#define _ASM_M68KNOMMU_RELAY_H
-
-#include <asm-generic/relay.h>
-#endif
+++ /dev/null
-/* Do not need anything here */
-
+++ /dev/null
-#ifndef _ASM_RELAY_H
-#define _ASM_RELAY_H
-
-#include <asm-generic/relay.h>
-#endif
+++ /dev/null
-#ifndef __ASM_RMAP_H
-#define __ASM_RMAP_H
-
-/* nothing to see, move along */
-#include <asm-generic/rmap.h>
-
-#endif /* __ASM_RMAP_H */
+++ /dev/null
-#ifndef _ASM_RELAY_H
-#define _ASM_RELAY_H
-
-#include <asm-generic/relay.h>
-#endif
+++ /dev/null
-#ifndef _ASM_PARISC_RELAY_H
-#define _ASM_PARISC_RELAY_H
-
-#include <asm-generic/relay.h>
-#endif
+++ /dev/null
-#ifndef _PARISC_RMAP_H
-#define _PARISC_RMAP_H
-
-/* nothing to see, move along */
-#include <asm-generic/rmap.h>
-
-#endif
+++ /dev/null
-#ifndef _ASM_PPC_RELAY_H
-#define _ASM_PPC_RELAY_H
-
-#include <asm-generic/relay.h>
-#endif
+++ /dev/null
-#ifndef _PPC_RMAP_H
-#define _PPC_RMAP_H
-
-/* PPC calls pte_alloc() before mem_map[] is setup ... */
-#define BROKEN_PPC_PTE_ALLOC_ONE
-
-#include <asm-generic/rmap.h>
-
-#endif
+++ /dev/null
-#ifndef _ASM_PPC64_RELAY_H
-#define _ASM_PPC64_RELAY_H
-
-#include <asm-generic/relay.h>
-#endif
+++ /dev/null
-#ifndef _PPC64_RMAP_H
-#define _PPC64_RMAP_H
-
-/* PPC64 calls pte_alloc() before mem_map[] is setup ... */
-#define BROKEN_PPC_PTE_ALLOC_ONE
-
-#include <asm-generic/rmap.h>
-
-#endif
+++ /dev/null
-#ifndef _ASM_S390_RELAY_H
-#define _ASM_S390_RELAY_H
-
-#include <asm-generic/relay.h>
-#endif
+++ /dev/null
-#ifndef _S390_RMAP_H
-#define _S390_RMAP_H
-
-/* nothing to see, move along */
-#include <asm-generic/rmap.h>
-
-#endif
+++ /dev/null
-#ifndef _ASM_SH_RELAY_H
-#define _ASM_SH_RELAY_H
-
-#include <asm-generic/relay.h>
-#endif
+++ /dev/null
-#ifndef _SH_RMAP_H
-#define _SH_RMAP_H
-
-/* nothing to see, move along */
-#include <asm-generic/rmap.h>
-
-#endif
+++ /dev/null
-#ifndef _ASM_SPARC_RELAY_H
-#define _ASM_SPARC_RELAY_H
-
-#include <asm-generic/relay.h>
-#endif
+++ /dev/null
-#ifndef _SPARC_RMAP_H
-#define _SPARC_RMAP_H
-
-/* nothing to see, move along */
-#include <asm-generic/rmap.h>
-
-#endif
+++ /dev/null
-#ifndef _ASM_SPARC64_RELAY_H
-#define _ASM_SPARC64_RELAY_H
-
-#include <asm-generic/relay.h>
-#endif
+++ /dev/null
-#ifndef _SPARC64_RMAP_H
-#define _SPARC64_RMAP_H
-
-/* nothing to see, move along */
-#include <asm-generic/rmap.h>
-
-#endif
+++ /dev/null
-#ifndef __UM_CPUFEATURE_H
-#define __UM_CPUFEATURE_H
-
-#include "asm/arch/cpufeature.h"
-
-#endif
+++ /dev/null
-#ifndef __UM_LOCAL_H
-#define __UM_LOCAL_H
-
-#include "asm/arch/local.h"
-
-#endif
+++ /dev/null
-#ifndef __UM_MODULE_GENERIC_H
-#define __UM_MODULE_GENERIC_H
-
-#include "asm/arch/module.h"
-
-#endif
+++ /dev/null
-#ifndef __UM_RMAP_H
-#define __UM_RMAP_H
-
-#include "asm/arch/rmap.h"
-
-#endif
+++ /dev/null
-#ifndef _UM_SECTIONS_H
-#define _UM_SECTIONS_H
-
-/* nothing to see, move along */
-#include <asm-generic/sections.h>
-
-#endif
+++ /dev/null
-#ifndef __V850_RELAY_H
-#define __V850_RELAY_H
-
-#include <asm-generic/relay.h>
-#endif
+++ /dev/null
-/* Do not need anything here */
+++ /dev/null
-#ifndef _ASM_X86_64_RELAY_H
-#define _ASM_X86_64_RELAY_H
-
-#include <asm-generic/relay.h>
-#endif
+++ /dev/null
-#ifndef _X8664_RMAP_H
-#define _X8664_RMAP_H
-
-/* nothing to see, move along */
-#include <asm-generic/rmap.h>
-
-#endif
+++ /dev/null
-/*
- * KLOG Generic Logging facility built upon the relayfs infrastructure
- *
- * Authors: Hubertus Frankeh (frankeh@us.ibm.com)
- * Tom Zanussi (zanussi@us.ibm.com)
- *
- * Please direct all questions/comments to zanussi@us.ibm.com
- *
- * Copyright (C) 2003, IBM Corp
- *
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- */
-
-#ifndef _LINUX_KLOG_H
-#define _LINUX_KLOG_H
-
-extern int klog(const char *fmt, ...);
-extern int klog_raw(const char *buf,int len);
-
-#endif /* _LINUX_KLOG_H */
+++ /dev/null
-/*
- * linux/include/linux/relayfs_fs.h
- *
- * Copyright (C) 2002, 2003 - Tom Zanussi (zanussi@us.ibm.com), IBM Corp
- * Copyright (C) 1999, 2000, 2001, 2002 - Karim Yaghmour (karim@opersys.com)
- *
- * RelayFS definitions and declarations
- *
- * Please see Documentation/filesystems/relayfs.txt for more info.
- */
-
-#ifndef _LINUX_RELAYFS_FS_H
-#define _LINUX_RELAYFS_FS_H
-
-#include <linux/config.h>
-#include <linux/types.h>
-#include <linux/sched.h>
-#include <linux/wait.h>
-#include <linux/list.h>
-#include <linux/fs.h>
-
-/*
- * Tracks changes to rchan struct
- */
-#define RELAYFS_CHANNEL_VERSION 1
-
-/*
- * Maximum number of simultaneously open channels
- */
-#define RELAY_MAX_CHANNELS 256
-
-/*
- * Relay properties
- */
-#define RELAY_MIN_BUFS 2
-#define RELAY_MIN_BUFSIZE 4096
-#define RELAY_MAX_BUFS 256
-#define RELAY_MAX_BUF_SIZE 0x1000000
-#define RELAY_MAX_TOTAL_BUF_SIZE 0x8000000
-
-/*
- * Lockless scheme utility macros
- */
-#define RELAY_MAX_BUFNO(bufno_bits) (1UL << (bufno_bits))
-#define RELAY_BUF_SIZE(offset_bits) (1UL << (offset_bits))
-#define RELAY_BUF_OFFSET_MASK(offset_bits) (RELAY_BUF_SIZE(offset_bits) - 1)
-#define RELAY_BUFNO_GET(index, offset_bits) ((index) >> (offset_bits))
-#define RELAY_BUF_OFFSET_GET(index, mask) ((index) & (mask))
-#define RELAY_BUF_OFFSET_CLEAR(index, mask) ((index) & ~(mask))
-
-/*
- * Flags returned by relay_reserve()
- */
-#define RELAY_BUFFER_SWITCH_NONE 0x0
-#define RELAY_WRITE_DISCARD_NONE 0x0
-#define RELAY_BUFFER_SWITCH 0x1
-#define RELAY_WRITE_DISCARD 0x2
-#define RELAY_WRITE_TOO_LONG 0x4
-
-/*
- * Relay attribute flags
- */
-#define RELAY_DELIVERY_BULK 0x1
-#define RELAY_DELIVERY_PACKET 0x2
-#define RELAY_SCHEME_LOCKLESS 0x4
-#define RELAY_SCHEME_LOCKING 0x8
-#define RELAY_SCHEME_ANY 0xC
-#define RELAY_TIMESTAMP_TSC 0x10
-#define RELAY_TIMESTAMP_GETTIMEOFDAY 0x20
-#define RELAY_TIMESTAMP_ANY 0x30
-#define RELAY_USAGE_SMP 0x40
-#define RELAY_USAGE_GLOBAL 0x80
-#define RELAY_MODE_CONTINUOUS 0x100
-#define RELAY_MODE_NO_OVERWRITE 0x200
-
-/*
- * Flags for needs_resize() callback
- */
-#define RELAY_RESIZE_NONE 0x0
-#define RELAY_RESIZE_EXPAND 0x1
-#define RELAY_RESIZE_SHRINK 0x2
-#define RELAY_RESIZE_REPLACE 0x4
-#define RELAY_RESIZE_REPLACED 0x8
-
-/*
- * Values for fileop_notify() callback
- */
-enum relay_fileop
-{
- RELAY_FILE_OPEN,
- RELAY_FILE_CLOSE,
- RELAY_FILE_MAP,
- RELAY_FILE_UNMAP
-};
-
-/*
- * Data structure returned by relay_info()
- */
-struct rchan_info
-{
- u32 flags; /* relay attribute flags for channel */
- u32 buf_size; /* channel's sub-buffer size */
- char *buf_addr; /* address of channel start */
- u32 alloc_size; /* total buffer size actually allocated */
- u32 n_bufs; /* number of sub-buffers in channel */
- u32 cur_idx; /* current write index into channel */
- u32 bufs_produced; /* current count of sub-buffers produced */
- u32 bufs_consumed; /* current count of sub-buffers consumed */
- u32 buf_id; /* buf_id of current sub-buffer */
- int buffer_complete[RELAY_MAX_BUFS]; /* boolean per sub-buffer */
- int unused_bytes[RELAY_MAX_BUFS]; /* count per sub-buffer */
-};
-
-/*
- * Relay channel client callbacks
- */
-struct rchan_callbacks
-{
- /*
- * buffer_start - called at the beginning of a new sub-buffer
- * @rchan_id: the channel id
- * @current_write_pos: position in sub-buffer client should write to
- * @buffer_id: the id of the new sub-buffer
- * @start_time: the timestamp associated with the start of sub-buffer
- * @start_tsc: the TSC associated with the timestamp, if using_tsc
- * @using_tsc: boolean, indicates whether start_tsc is valid
- *
- * Return value should be the number of bytes written by the client.
- *
- * See Documentation/filesystems/relayfs.txt for details.
- */
- int (*buffer_start) (int rchan_id,
- char *current_write_pos,
- u32 buffer_id,
- struct timeval start_time,
- u32 start_tsc,
- int using_tsc);
-
- /*
- * buffer_end - called at the end of a sub-buffer
- * @rchan_id: the channel id
- * @current_write_pos: position in sub-buffer of end of data
- * @end_of_buffer: the position of the end of the sub-buffer
- * @end_time: the timestamp associated with the end of the sub-buffer
- * @end_tsc: the TSC associated with the end_time, if using_tsc
- * @using_tsc: boolean, indicates whether end_tsc is valid
- *
- * Return value should be the number of bytes written by the client.
- *
- * See Documentation/filesystems/relayfs.txt for details.
- */
- int (*buffer_end) (int rchan_id,
- char *current_write_pos,
- char *end_of_buffer,
- struct timeval end_time,
- u32 end_tsc,
- int using_tsc);
-
- /*
- * deliver - called when data is ready for the client
- * @rchan_id: the channel id
- * @from: the start of the delivered data
- * @len: the length of the delivered data
- *
- * See Documentation/filesystems/relayfs.txt for details.
- */
- void (*deliver) (int rchan_id, char *from, u32 len);
-
- /*
- * user_deliver - called when data has been written from userspace
- * @rchan_id: the channel id
- * @from: the start of the delivered data
- * @len: the length of the delivered data
- *
- * See Documentation/filesystems/relayfs.txt for details.
- */
- void (*user_deliver) (int rchan_id, char *from, u32 len);
-
- /*
- * needs_resize - called when a resizing event occurs
- * @rchan_id: the channel id
- * @resize_type: the type of resizing event
- * @suggested_buf_size: the suggested new sub-buffer size
- * @suggested_buf_size: the suggested new number of sub-buffers
- *
- * See Documentation/filesystems/relayfs.txt for details.
- */
- void (*needs_resize)(int rchan_id,
- int resize_type,
- u32 suggested_buf_size,
- u32 suggested_n_bufs);
-
- /*
- * fileop_notify - called on open/close/mmap/munmap of a relayfs file
- * @rchan_id: the channel id
- * @filp: relayfs file pointer
- * @fileop: which file operation is in progress
- *
- * The return value can direct the outcome of the operation.
- *
- * See Documentation/filesystems/relayfs.txt for details.
- */
- int (*fileop_notify)(int rchan_id,
- struct file *filp,
- enum relay_fileop fileop);
-
- /*
- * ioctl - called in ioctl context from userspace
- * @rchan_id: the channel id
- * @cmd: ioctl cmd
- * @arg: ioctl cmd arg
- *
- * The return value is returned as the value from the ioctl call.
- *
- * See Documentation/filesystems/relayfs.txt for details.
- */
- int (*ioctl) (int rchan_id, unsigned int cmd, unsigned long arg);
-};
-
-/*
- * Lockless scheme-specific data
- */
-struct lockless_rchan
-{
- u8 bufno_bits; /* # bits used for sub-buffer id */
- u8 offset_bits; /* # bits used for offset within sub-buffer */
- u32 index; /* current index = sub-buffer id and offset */
- u32 offset_mask; /* used to obtain offset portion of index */
- u32 index_mask; /* used to mask off unused bits index */
- atomic_t fill_count[RELAY_MAX_BUFS]; /* fill count per sub-buffer */
-};
-
-/*
- * Locking scheme-specific data
- */
-struct locking_rchan
-{
- char *write_buf; /* start of write sub-buffer */
- char *write_buf_end; /* end of write sub-buffer */
- char *current_write_pos; /* current write pointer */
- char *write_limit; /* takes reserves into account */
- char *in_progress_event_pos; /* used for interrupted writes */
- u16 in_progress_event_size; /* used for interrupted writes */
- char *interrupted_pos; /* used for interrupted writes */
- u16 interrupting_size; /* used for interrupted writes */
- spinlock_t lock; /* channel lock for locking scheme */
-};
-
-struct relay_ops;
-
-/*
- * Offset resizing data structure
- */
-struct resize_offset
-{
- u32 ge;
- u32 le;
- int delta;
-};
-
-/*
- * Relay channel data structure
- */
-struct rchan
-{
- u32 version; /* the version of this struct */
- char *buf; /* the channel buffer */
- union
- {
- struct lockless_rchan lockless;
- struct locking_rchan locking;
- } scheme; /* scheme-specific channel data */
-
- int id; /* the channel id */
- struct rchan_callbacks *callbacks; /* client callbacks */
- u32 flags; /* relay channel attributes */
- u32 buf_id; /* current sub-buffer id */
- u32 buf_idx; /* current sub-buffer index */
-
- atomic_t mapped; /* map count */
-
- atomic_t suspended; /* channel suspended i.e full? */
- int half_switch; /* used internally for suspend */
-
- struct timeval buf_start_time; /* current sub-buffer start time */
- u32 buf_start_tsc; /* current sub-buffer start TSC */
-
- u32 buf_size; /* sub-buffer size */
- u32 alloc_size; /* total buffer size allocated */
- u32 n_bufs; /* number of sub-buffers */
-
- u32 bufs_produced; /* count of sub-buffers produced */
- u32 bufs_consumed; /* count of sub-buffers consumed */
- u32 bytes_consumed; /* bytes consumed in cur sub-buffer */
-
- int initialized; /* first buffer initialized? */
- int finalized; /* channel finalized? */
-
- u32 start_reserve; /* reserve at start of sub-buffers */
- u32 end_reserve; /* reserve at end of sub-buffers */
- u32 rchan_start_reserve; /* additional reserve sub-buffer 0 */
-
- struct dentry *dentry; /* channel file dentry */
-
- wait_queue_head_t read_wait; /* VFS read wait queue */
- wait_queue_head_t write_wait; /* VFS write wait queue */
- struct work_struct wake_readers; /* reader wake-up work struct */
- struct work_struct wake_writers; /* reader wake-up work struct */
- atomic_t refcount; /* channel refcount */
-
- struct relay_ops *relay_ops; /* scheme-specific channel ops */
-
- int unused_bytes[RELAY_MAX_BUFS]; /* unused count per sub-buffer */
-
- struct semaphore resize_sem; /* serializes alloc/repace */
- struct work_struct work; /* resize allocation work struct */
-
- struct list_head open_readers; /* open readers for this channel */
- rwlock_t open_readers_lock; /* protection for open_readers list */
-
- char *init_buf; /* init channel buffer, if non-NULL */
-
- u32 resize_min; /* minimum resized total buffer size */
- u32 resize_max; /* maximum resized total buffer size */
- char *resize_buf; /* for autosize alloc/free */
- u32 resize_buf_size; /* resized sub-buffer size */
- u32 resize_n_bufs; /* resized number of sub-buffers */
- u32 resize_alloc_size; /* resized actual total size */
- int resizing; /* is resizing in progress? */
- int resize_err; /* resizing err code */
- int resize_failures; /* number of resize failures */
- int replace_buffer; /* is the alloced buffer ready? */
- struct resize_offset resize_offset; /* offset change */
- struct timer_list shrink_timer; /* timer used for shrinking */
- int resize_order; /* size of last resize */
- u32 expand_buf_id; /* subbuf id expand will occur at */
-
- struct page **buf_page_array; /* array of current buffer pages */
- int buf_page_count; /* number of current buffer pages */
- struct page **expand_page_array;/* new pages to be inserted */
- int expand_page_count; /* number of new pages */
- struct page **shrink_page_array;/* old pages to be freed */
- int shrink_page_count; /* number of old pages */
- struct page **resize_page_array;/* will become current pages */
- int resize_page_count; /* number of resize pages */
- struct page **old_buf_page_array; /* hold for freeing */
-} ____cacheline_aligned;
-
-/*
- * Relay channel reader struct
- */
-struct rchan_reader
-{
- struct list_head list; /* for list inclusion */
- struct rchan *rchan; /* the channel we're reading from */
- int auto_consume; /* does this reader auto-consume? */
- u32 bufs_consumed; /* buffers this reader has consumed */
- u32 bytes_consumed; /* bytes consumed in cur sub-buffer */
- int offset_changed; /* have channel offsets changed? */
- int vfs_reader; /* are we a VFS reader? */
- int map_reader; /* are we an mmap reader? */
-
- union
- {
- struct file *file;
- u32 f_pos;
- } pos; /* current read offset */
-};
-
-/*
- * These help make union member access less tedious
- */
-#define channel_buffer(rchan) ((rchan)->buf)
-#define idx(rchan) ((rchan)->scheme.lockless.index)
-#define bufno_bits(rchan) ((rchan)->scheme.lockless.bufno_bits)
-#define offset_bits(rchan) ((rchan)->scheme.lockless.offset_bits)
-#define offset_mask(rchan) ((rchan)->scheme.lockless.offset_mask)
-#define idx_mask(rchan) ((rchan)->scheme.lockless.index_mask)
-#define bulk_delivery(rchan) (((rchan)->flags & RELAY_DELIVERY_BULK) ? 1 : 0)
-#define packet_delivery(rchan) (((rchan)->flags & RELAY_DELIVERY_PACKET) ? 1 : 0)
-#define using_lockless(rchan) (((rchan)->flags & RELAY_SCHEME_LOCKLESS) ? 1 : 0)
-#define using_locking(rchan) (((rchan)->flags & RELAY_SCHEME_LOCKING) ? 1 : 0)
-#define using_tsc(rchan) (((rchan)->flags & RELAY_TIMESTAMP_TSC) ? 1 : 0)
-#define using_gettimeofday(rchan) (((rchan)->flags & RELAY_TIMESTAMP_GETTIMEOFDAY) ? 1 : 0)
-#define usage_smp(rchan) (((rchan)->flags & RELAY_USAGE_SMP) ? 1 : 0)
-#define usage_global(rchan) (((rchan)->flags & RELAY_USAGE_GLOBAL) ? 1 : 0)
-#define mode_continuous(rchan) (((rchan)->flags & RELAY_MODE_CONTINUOUS) ? 1 : 0)
-#define fill_count(rchan, i) ((rchan)->scheme.lockless.fill_count[(i)])
-#define write_buf(rchan) ((rchan)->scheme.locking.write_buf)
-#define read_buf(rchan) ((rchan)->scheme.locking.read_buf)
-#define write_buf_end(rchan) ((rchan)->scheme.locking.write_buf_end)
-#define read_buf_end(rchan) ((rchan)->scheme.locking.read_buf_end)
-#define cur_write_pos(rchan) ((rchan)->scheme.locking.current_write_pos)
-#define read_limit(rchan) ((rchan)->scheme.locking.read_limit)
-#define write_limit(rchan) ((rchan)->scheme.locking.write_limit)
-#define in_progress_event_pos(rchan) ((rchan)->scheme.locking.in_progress_event_pos)
-#define in_progress_event_size(rchan) ((rchan)->scheme.locking.in_progress_event_size)
-#define interrupted_pos(rchan) ((rchan)->scheme.locking.interrupted_pos)
-#define interrupting_size(rchan) ((rchan)->scheme.locking.interrupting_size)
-#define channel_lock(rchan) ((rchan)->scheme.locking.lock)
-
-
-/**
- * calc_time_delta - utility function for time delta calculation
- * @now: current time
- * @start: start time
- *
- * Returns the time delta produced by subtracting start time from now.
- */
-static inline u32
-calc_time_delta(struct timeval *now,
- struct timeval *start)
-{
- return (now->tv_sec - start->tv_sec) * 1000000
- + (now->tv_usec - start->tv_usec);
-}
-
-/**
- * recalc_time_delta - utility function for time delta recalculation
- * @now: current time
- * @new_delta: the new time delta calculated
- * @cpu: the associated CPU id
- */
-static inline void
-recalc_time_delta(struct timeval *now,
- u32 *new_delta,
- struct rchan *rchan)
-{
- if (using_tsc(rchan) == 0)
- *new_delta = calc_time_delta(now, &rchan->buf_start_time);
-}
-
-/**
- * have_cmpxchg - does this architecture have a cmpxchg?
- *
- * Returns 1 if this architecture has a cmpxchg useable by
- * the lockless scheme, 0 otherwise.
- */
-static inline int
-have_cmpxchg(void)
-{
-#if defined(__HAVE_ARCH_CMPXCHG)
- return 1;
-#else
- return 0;
-#endif
-}
-
-/**
- * relay_write_direct - write data directly into destination buffer
- */
-#define relay_write_direct(DEST, SRC, SIZE) \
-do\
-{\
- memcpy(DEST, SRC, SIZE);\
- DEST += SIZE;\
-} while (0);
-
-/**
- * relay_lock_channel - lock the relay channel if applicable
- *
- * This macro only affects the locking scheme. If the locking scheme
- * is in use and the channel usage is SMP, does a local_irq_save. If the
- * locking sheme is in use and the channel usage is GLOBAL, uses
- * spin_lock_irqsave. FLAGS is initialized to 0 since we know that
- * it is being initialized prior to use and we avoid the compiler warning.
- */
-#define relay_lock_channel(RCHAN, FLAGS) \
-do\
-{\
- FLAGS = 0;\
- if (using_locking(RCHAN)) {\
- if (usage_smp(RCHAN)) {\
- local_irq_save(FLAGS); \
- } else {\
- spin_lock_irqsave(&(RCHAN)->scheme.locking.lock, FLAGS); \
- }\
- }\
-} while (0);
-
-/**
- * relay_unlock_channel - unlock the relay channel if applicable
- *
- * This macro only affects the locking scheme. See relay_lock_channel.
- */
-#define relay_unlock_channel(RCHAN, FLAGS) \
-do\
-{\
- if (using_locking(RCHAN)) {\
- if (usage_smp(RCHAN)) {\
- local_irq_restore(FLAGS); \
- } else {\
- spin_unlock_irqrestore(&(RCHAN)->scheme.locking.lock, FLAGS); \
- }\
- }\
-} while (0);
-
-/*
- * Define cmpxchg if we don't have it
- */
-#ifndef __HAVE_ARCH_CMPXCHG
-#define cmpxchg(p,o,n) 0
-#endif
-
-/*
- * High-level relayfs kernel API, fs/relayfs/relay.c
- */
-extern int
-relay_open(const char *chanpath,
- int bufsize,
- int nbufs,
- u32 flags,
- struct rchan_callbacks *channel_callbacks,
- u32 start_reserve,
- u32 end_reserve,
- u32 rchan_start_reserve,
- u32 resize_min,
- u32 resize_max,
- int mode,
- char *init_buf,
- u32 init_buf_size);
-
-extern int
-relay_close(int rchan_id);
-
-extern int
-relay_write(int rchan_id,
- const void *data_ptr,
- size_t count,
- int td_offset,
- void **wrote_pos);
-
-extern ssize_t
-relay_read(struct rchan_reader *reader,
- char *buf,
- size_t count,
- int wait,
- u32 *actual_read_offset);
-
-extern int
-relay_discard_init_buf(int rchan_id);
-
-extern struct rchan_reader *
-add_rchan_reader(int rchan_id, int autoconsume);
-
-extern int
-remove_rchan_reader(struct rchan_reader *reader);
-
-extern struct rchan_reader *
-add_map_reader(int rchan_id);
-
-extern int
-remove_map_reader(struct rchan_reader *reader);
-
-extern int
-relay_info(int rchan_id, struct rchan_info *rchan_info);
-
-extern void
-relay_buffers_consumed(struct rchan_reader *reader, u32 buffers_consumed);
-
-extern void
-relay_bytes_consumed(struct rchan_reader *reader, u32 bytes_consumed, u32 read_offset);
-
-extern ssize_t
-relay_bytes_avail(struct rchan_reader *reader);
-
-extern int
-relay_realloc_buffer(int rchan_id, u32 new_nbufs, int in_background);
-
-extern int
-relay_replace_buffer(int rchan_id);
-
-extern int
-rchan_empty(struct rchan_reader *reader);
-
-extern int
-rchan_full(struct rchan_reader *reader);
-
-extern void
-update_readers_consumed(struct rchan *rchan, u32 bufs_consumed, u32 bytes_consumed);
-
-extern int
-__relay_mmap_buffer(struct rchan *rchan, struct vm_area_struct *vma);
-
-extern struct rchan_reader *
-__add_rchan_reader(struct rchan *rchan, struct file *filp, int auto_consume, int map_reader);
-
-extern void
-__remove_rchan_reader(struct rchan_reader *reader);
-
-/*
- * Low-level relayfs kernel API, fs/relayfs/relay.c
- */
-extern struct rchan *
-rchan_get(int rchan_id);
-
-extern void
-rchan_put(struct rchan *rchan);
-
-extern char *
-relay_reserve(struct rchan *rchan,
- u32 data_len,
- struct timeval *time_stamp,
- u32 *time_delta,
- int *errcode,
- int *interrupting);
-
-extern void
-relay_commit(struct rchan *rchan,
- char *from,
- u32 len,
- int reserve_code,
- int interrupting);
-
-extern u32
-relay_get_offset(struct rchan *rchan, u32 *max_offset);
-
-extern int
-relay_reset(int rchan_id);
-
-/*
- * VFS functions, fs/relayfs/inode.c
- */
-extern int
-relayfs_create_dir(const char *name,
- struct dentry *parent,
- struct dentry **dentry);
-
-extern int
-relayfs_create_file(const char * name,
- struct dentry *parent,
- struct dentry **dentry,
- void * data,
- int mode);
-
-extern int
-relayfs_remove_file(struct dentry *dentry);
-
-extern int
-reset_index(struct rchan *rchan, u32 old_index);
-
-
-/*
- * klog functions, fs/relayfs/klog.c
- */
-extern int
-create_klog_channel(void);
-
-extern int
-remove_klog_channel(void);
-
-/*
- * Scheme-specific channel ops
- */
-struct relay_ops
-{
- char * (*reserve) (struct rchan *rchan,
- u32 slot_len,
- struct timeval *time_stamp,
- u32 *tsc,
- int * errcode,
- int * interrupting);
-
- void (*commit) (struct rchan *rchan,
- char *from,
- u32 len,
- int deliver,
- int interrupting);
-
- u32 (*get_offset) (struct rchan *rchan,
- u32 *max_offset);
-
- void (*resume) (struct rchan *rchan);
- void (*finalize) (struct rchan *rchan);
- void (*reset) (struct rchan *rchan,
- int init);
- int (*reset_index) (struct rchan *rchan,
- u32 old_index);
-};
-
-#endif /* _LINUX_RELAYFS_FS_H */
-
-
-
-
-
+++ /dev/null
-/*
- BlueZ - Bluetooth protocol stack for Linux
- Copyright (C) 2000-2001 Qualcomm Incorporated
-
- Written 2000,2001 by Maxim Krasnyansky <maxk@qualcomm.com>
-
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License version 2 as
- published by the Free Software Foundation;
-
- THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
- OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS.
- IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY
- CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES
- WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
- ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
- OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
-
- ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS,
- COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS
- SOFTWARE IS DISCLAIMED.
-*/
-
-/*
- * Bluetooth symbols.
- *
- * $Id: syms.c,v 1.1 2002/03/08 21:06:59 maxk Exp $
- */
-
-#include <linux/config.h>
-#include <linux/module.h>
-
-#include <linux/types.h>
-#include <linux/errno.h>
-#include <linux/kernel.h>
-#include <linux/init.h>
-#include <linux/skbuff.h>
-#include <linux/socket.h>
-
-#include <net/bluetooth/bluetooth.h>
-#include <net/bluetooth/hci_core.h>
-
-/* HCI Core */
-EXPORT_SYMBOL(hci_alloc_dev);
-EXPORT_SYMBOL(hci_free_dev);
-EXPORT_SYMBOL(hci_register_dev);
-EXPORT_SYMBOL(hci_unregister_dev);
-EXPORT_SYMBOL(hci_suspend_dev);
-EXPORT_SYMBOL(hci_resume_dev);
-
-EXPORT_SYMBOL(hci_register_proto);
-EXPORT_SYMBOL(hci_unregister_proto);
-
-EXPORT_SYMBOL(hci_get_route);
-EXPORT_SYMBOL(hci_connect);
-EXPORT_SYMBOL(hci_dev_get);
-EXPORT_SYMBOL(hci_conn_auth);
-EXPORT_SYMBOL(hci_conn_encrypt);
-
-EXPORT_SYMBOL(hci_send_acl);
-EXPORT_SYMBOL(hci_send_sco);
-EXPORT_SYMBOL(hci_send_cmd);
-EXPORT_SYMBOL(hci_si_event);
-
-/* Bluetooth lib */
-EXPORT_SYMBOL(bt_dump);
-EXPORT_SYMBOL(baswap);
-EXPORT_SYMBOL(batostr);
-EXPORT_SYMBOL(bt_err);
-
-/* Bluetooth sockets */
-EXPORT_SYMBOL(bt_sock_register);
-EXPORT_SYMBOL(bt_sock_unregister);
-EXPORT_SYMBOL(bt_sock_alloc);
-EXPORT_SYMBOL(bt_sock_link);
-EXPORT_SYMBOL(bt_sock_unlink);
-EXPORT_SYMBOL(bt_sock_recvmsg);
-EXPORT_SYMBOL(bt_sock_poll);
-EXPORT_SYMBOL(bt_accept_enqueue);
-EXPORT_SYMBOL(bt_accept_dequeue);
-EXPORT_SYMBOL(bt_sock_wait_state);
-
-EXPORT_SYMBOL(proc_bt);
+++ /dev/null
-/*
- * ALSA driver for ICEnsemble VT1724 (Envy24HT)
- *
- * Lowlevel functions for AudioTrak Prodigy 7.1 (and possibly 192) cards
- * Copyright (c) 2003 Dimitromanolakis Apostolos <apostol@cs.utoronto.ca>
- * based on the aureon.c code (c) 2003 by Takashi Iwai <tiwai@suse.de>
- *
- * version 0.82: Stable / not all features work yet (no communication with AC97 secondary)
- * added 64x/128x oversampling switch (should be 64x only for 96khz)
- * fixed some recording labels (still need to check the rest)
- * recording is working probably thanks to correct wm8770 initialization
- *
- * version 0.5: Initial release:
- * working: analog output, mixer, headphone amplifier switch
- * not working: prety much everything else, at least i could verify that
- * we have no digital output, no capture, pretty bad clicks and poops
- * on mixer switch and other coll stuff.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- *
- *
- * NOTES:
- *
- *
- *
- * - we reuse the akm4xxx_t record for storing the wm8770 codec data.
- * both wm and akm codecs are pretty similar, so we can integrate
- * both controls in the future, once if wm codecs are reused in
- * many boards.
- *
- * - writing over SPI is implemented but reading is not yet.
- * the SPDIF-in channel status, etc. can be read from CS chip.
- *
- * - DAC digital volumes are not implemented in the mixer.
- * if they show better response than DAC analog volumes, we can use them
- * instead.
- *
- * - Prodigy boards are equipped with AC97 STAC9744 chip , too. it's used to do
- * the analog mixing but not easily controllable (it's not connected
- * directly from envy24ht chip). so let's leave it as it is.
- *
- */
-
-#define REVISION 0.82b
-
-#include <sound/driver.h>
-#include <asm/io.h>
-#include <linux/delay.h>
-#include <linux/interrupt.h>
-#include <linux/init.h>
-#include <linux/slab.h>
-#include <sound/core.h>
-
-#include "ice1712.h"
-#include "envy24ht.h"
-#include "prodigy.h"
-
-
-static int prodigy_set_headphone_amp(ice1712_t *ice, int enable)
-{
- unsigned int tmp, tmp2;
-
- tmp2 = tmp = snd_ice1712_gpio_read(ice);
- if (enable)
- tmp |= PRODIGY_HP_AMP_EN;
- else
- tmp &= ~ PRODIGY_HP_AMP_EN;
- if (tmp != tmp2) {
- snd_ice1712_gpio_write(ice, tmp);
- return 1;
- }
- return 0;
-}
-
-
-static int prodigy_get_headphone_amp(ice1712_t *ice)
-{
- unsigned int tmp = snd_ice1712_gpio_read(ice);
-
- return ( tmp & PRODIGY_HP_AMP_EN )!= 0;
-}
-
-
-/*
- * write data in the SPI mode
- */
-static void prodigy_spi_write(ice1712_t *ice, unsigned int cs, unsigned int data, int bits)
-{
- unsigned int tmp;
- int i;
-
- tmp = snd_ice1712_gpio_read(ice);
-
- snd_ice1712_gpio_set_mask(ice, ~(PRODIGY_WM_RW|PRODIGY_WM_DATA|PRODIGY_WM_CLK|
- PRODIGY_WM_CS|PRODIGY_CS8415_CS|PRODIGY_HP_AMP_EN));
- tmp |= PRODIGY_WM_RW;
- tmp &= ~cs;
- snd_ice1712_gpio_write(ice, tmp);
- udelay(1);
-
- for (i = bits - 1; i >= 0; i--) {
- tmp &= ~PRODIGY_WM_CLK;
- snd_ice1712_gpio_write(ice, tmp);
- udelay(1);
- if (data & (1 << i))
- tmp |= PRODIGY_WM_DATA;
- else
- tmp &= ~PRODIGY_WM_DATA;
- snd_ice1712_gpio_write(ice, tmp);
- udelay(1);
- tmp |= PRODIGY_WM_CLK;
- snd_ice1712_gpio_write(ice, tmp);
- udelay(1);
- }
-
- tmp &= ~PRODIGY_WM_CLK;
- tmp |= cs;
- snd_ice1712_gpio_write(ice, tmp);
- udelay(1);
- tmp |= PRODIGY_WM_CLK;
- snd_ice1712_gpio_write(ice, tmp);
- udelay(1);
-}
-
-
-/*
- * get the current register value of WM codec
- */
-static unsigned short wm_get(ice1712_t *ice, int reg)
-{
- reg <<= 1;
- return ((unsigned short)ice->akm[0].images[reg] << 8) |
- ice->akm[0].images[reg + 1];
-}
-
-/*
- * set the register value of WM codec and remember it
- */
-static void wm_put(ice1712_t *ice, int reg, unsigned short val)
-{
- prodigy_spi_write(ice, PRODIGY_WM_CS, (reg << 9) | (val & 0x1ff), 16);
- reg <<= 1;
- ice->akm[0].images[reg] = val >> 8;
- ice->akm[0].images[reg + 1] = val;
-}
-
-
-/*********************************
- ********* Controls section ******
- *********************************/
-
-#define PRODIGY_CON_HPAMP \
- { \
- .iface = SNDRV_CTL_ELEM_IFACE_MIXER, \
- .name = "Headphone Amplifier", \
- .info = prodigy_hpamp_info, \
- .get = prodigy_hpamp_get, \
- .put = prodigy_hpamp_put \
- }
-
-static int prodigy_hpamp_info(snd_kcontrol_t *k, snd_ctl_elem_info_t *uinfo)
-{
- static char *texts[2] = {
- "Off", "On"
- };
-
- uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
- uinfo->count = 1;
- uinfo->value.enumerated.items = 2;
-
- if (uinfo->value.enumerated.item >= uinfo->value.enumerated.items)
- uinfo->value.enumerated.item = uinfo->value.enumerated.items - 1;
- strcpy(uinfo->value.enumerated.name, texts[uinfo->value.enumerated.item]);
-
- return 0;
-}
-
-
-static int prodigy_hpamp_get(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *ucontrol)
-{
- ice1712_t *ice = snd_kcontrol_chip(kcontrol);
-
- ucontrol->value.integer.value[0] = prodigy_get_headphone_amp(ice);
- return 0;
-}
-
-
-static int prodigy_hpamp_put(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *ucontrol)
-{
- ice1712_t *ice = snd_kcontrol_chip(kcontrol);
-
- return prodigy_set_headphone_amp(ice,ucontrol->value.integer.value[0]);
-}
-
-
-
-#define PRODIGY_CON_DEEMP \
- { \
- .iface = SNDRV_CTL_ELEM_IFACE_MIXER, \
- .name = "DAC De-emphasis", \
- .info = prodigy_deemp_info, \
- .get = prodigy_deemp_get, \
- .put = prodigy_deemp_put \
- }
-
-static int prodigy_deemp_info(snd_kcontrol_t *k, snd_ctl_elem_info_t *uinfo)
-{
- static char *texts[2] = { "Off", "On" };
-
- uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
- uinfo->count = 1;
- uinfo->value.enumerated.items = 2;
-
- if (uinfo->value.enumerated.item >= uinfo->value.enumerated.items)
- uinfo->value.enumerated.item = uinfo->value.enumerated.items - 1;
- strcpy(uinfo->value.enumerated.name, texts[uinfo->value.enumerated.item]);
-
- return 0;
-}
-
-static int prodigy_deemp_get(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *ucontrol)
-{
- ice1712_t *ice = snd_kcontrol_chip(kcontrol);
- ucontrol->value.integer.value[0] = (wm_get(ice, 0x15) & 0xf) == 0xf;
- return 0;
-}
-
-static int prodigy_deemp_put(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *ucontrol)
-{
- ice1712_t *ice = snd_kcontrol_chip(kcontrol);
- int temp, temp2;
- temp2 = temp = wm_get(ice, 0x15);
- temp = (temp & ~0xf) | ((ucontrol->value.integer.value[0])*0xf);
- if (temp != temp2) {
- wm_put(ice,0x15,temp);
- return 1;
- }
- return 0;
-}
-
-
-#define PRODIGY_CON_OVERSAMPLING \
- { \
- .iface = SNDRV_CTL_ELEM_IFACE_MIXER, \
- .name = "ADC Oversampling", \
- .info = prodigy_oversampling_info, \
- .get = prodigy_oversampling_get, \
- .put = prodigy_oversampling_put \
- }
-
-static int prodigy_oversampling_info(snd_kcontrol_t *k, snd_ctl_elem_info_t *uinfo)
-{
- static char *texts[2] = { "128x", "64x" };
-
- uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
- uinfo->count = 1;
- uinfo->value.enumerated.items = 2;
-
- if (uinfo->value.enumerated.item >= uinfo->value.enumerated.items)
- uinfo->value.enumerated.item = uinfo->value.enumerated.items - 1;
- strcpy(uinfo->value.enumerated.name, texts[uinfo->value.enumerated.item]);
-
- return 0;
-}
-
-static int prodigy_oversampling_get(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *ucontrol)
-{
- ice1712_t *ice = snd_kcontrol_chip(kcontrol);
- ucontrol->value.integer.value[0] = (wm_get(ice, 0x17) & 0x8) == 0x8;
- return 0;
-}
-
-static int prodigy_oversampling_put(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *ucontrol)
-{
- int temp, temp2;
- ice1712_t *ice = snd_kcontrol_chip(kcontrol);
-
- temp2 = temp = wm_get(ice, 0x17);
-
- if( ucontrol->value.integer.value[0] ) {
- temp |= 0x8;
- } else {
- temp &= ~0x8;
- }
-
- if (temp != temp2) {
- wm_put(ice,0x17,temp);
- return 1;
- }
- return 0;
-}
-
-
-
-
-/*
- * DAC volume attenuation mixer control
- */
-static int wm_dac_vol_info(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t *uinfo)
-{
- uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
- uinfo->count = 1;
- uinfo->value.integer.min = 0; /* mute */
- uinfo->value.integer.max = 101; /* 0dB */
- return 0;
-}
-
-static int wm_dac_vol_get(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *ucontrol)
-{
- ice1712_t *ice = snd_kcontrol_chip(kcontrol);
- int idx;
- unsigned short vol;
-
- down(&ice->gpio_mutex);
- if (kcontrol->private_value)
- idx = WM_DAC_MASTER_ATTEN;
- else
- idx = snd_ctl_get_ioffidx(kcontrol, &ucontrol->id) + WM_DAC_ATTEN;
- vol = wm_get(ice, idx) & 0x7f;
- if (vol <= 0x1a)
- ucontrol->value.integer.value[0] = 0;
- else
- ucontrol->value.integer.value[0] = vol - 0x1a;
- up(&ice->gpio_mutex);
-
- return 0;
-}
-
-static int wm_dac_vol_put(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *ucontrol)
-{
- ice1712_t *ice = snd_kcontrol_chip(kcontrol);
- int idx;
- unsigned short ovol, nvol;
- int change;
-
- snd_ice1712_save_gpio_status(ice);
- if (kcontrol->private_value)
- idx = WM_DAC_MASTER_ATTEN;
- else
- idx = snd_ctl_get_ioffidx(kcontrol, &ucontrol->id) + WM_DAC_ATTEN;
- nvol = ucontrol->value.integer.value[0] + 0x1a;
- ovol = wm_get(ice, idx) & 0x7f;
- change = (ovol != nvol);
- if (change) {
- if (nvol <= 0x1a && ovol <= 0x1a)
- change = 0;
- else
- wm_put(ice, idx, nvol | 0x180); /* update on zero detect */
- }
- snd_ice1712_restore_gpio_status(ice);
- return change;
-}
-
-/*
- * ADC gain mixer control
- */
-static int wm_adc_vol_info(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t *uinfo)
-{
- uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
- uinfo->count = 1;
- uinfo->value.integer.min = 0; /* -12dB */
- uinfo->value.integer.max = 0x1f; /* 19dB */
- return 0;
-}
-
-static int wm_adc_vol_get(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *ucontrol)
-{
- ice1712_t *ice = snd_kcontrol_chip(kcontrol);
- int idx;
- unsigned short vol;
-
- down(&ice->gpio_mutex);
- idx = snd_ctl_get_ioffidx(kcontrol, &ucontrol->id) + WM_ADC_GAIN;
- vol = wm_get(ice, idx) & 0x1f;
- ucontrol->value.integer.value[0] = vol;
- up(&ice->gpio_mutex);
- return 0;
-}
-
-static int wm_adc_vol_put(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *ucontrol)
-{
- ice1712_t *ice = snd_kcontrol_chip(kcontrol);
- int idx;
- unsigned short ovol, nvol;
- int change;
-
- snd_ice1712_save_gpio_status(ice);
- idx = snd_ctl_get_ioffidx(kcontrol, &ucontrol->id) + WM_ADC_GAIN;
- nvol = ucontrol->value.integer.value[0];
- ovol = wm_get(ice, idx) & 0x1f;
- change = (ovol != nvol);
- if (change)
- wm_put(ice, idx, nvol);
- snd_ice1712_restore_gpio_status(ice);
- return change;
-}
-
-/*
- * ADC input mux mixer control
- */
-static int wm_adc_mux_info(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t *uinfo)
-{
- static char *texts[] = {
- "CD Left",
- "CD Right",
- "Line Left",
- "Line Right",
- "Aux Left",
- "Aux Right",
- "Mic Left",
- "Mic Right",
- };
- uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
- uinfo->count = 2;
- uinfo->value.enumerated.items = 8;
- if (uinfo->value.enumerated.item >= uinfo->value.enumerated.items)
- uinfo->value.enumerated.item = uinfo->value.enumerated.items - 1;
- strcpy(uinfo->value.enumerated.name, texts[uinfo->value.enumerated.item]);
- return 0;
-}
-
-static int wm_adc_mux_get(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t *ucontrol)
-{
- ice1712_t *ice = snd_kcontrol_chip(kcontrol);
- unsigned short val;
-
- down(&ice->gpio_mutex);
- val = wm_get(ice, WM_ADC_MUX);
- ucontrol->value.integer.value[0] = val & 7;
- ucontrol->value.integer.value[1] = (val >> 4) & 7;
- up(&ice->gpio_mutex);
- return 0;
-}
-
-static int wm_adc_mux_put(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t *ucontrol)
-{
- ice1712_t *ice = snd_kcontrol_chip(kcontrol);
- unsigned short oval, nval;
- int change;
-
- snd_ice1712_save_gpio_status(ice);
- oval = wm_get(ice, WM_ADC_MUX);
- nval = oval & ~0x77;
- nval |= ucontrol->value.integer.value[0] & 7;
- nval |= (ucontrol->value.integer.value[1] & 7) << 4;
- change = (oval != nval);
- if (change)
- wm_put(ice, WM_ADC_MUX, nval);
- snd_ice1712_restore_gpio_status(ice);
- return 0;
-}
-
-/*
- * mixers
- */
-
-static snd_kcontrol_new_t prodigy71_dac_control __devinitdata = {
- .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
- .name = "DAC Volume",
- .count = 8,
- .info = wm_dac_vol_info,
- .get = wm_dac_vol_get,
- .put = wm_dac_vol_put,
-};
-
-static snd_kcontrol_new_t wm_controls[] __devinitdata = {
- {
- .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
- .name = "Master Playback Volume",
- .info = wm_dac_vol_info,
- .get = wm_dac_vol_get,
- .put = wm_dac_vol_put,
- .private_value = 1,
- },
- {
- .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
- .name = "ADC Volume",
- .count = 2,
- .info = wm_adc_vol_info,
- .get = wm_adc_vol_get,
- .put = wm_adc_vol_put,
- },
- {
- .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
- .name = "Capture Route",
- .info = wm_adc_mux_info,
- .get = wm_adc_mux_get,
- .put = wm_adc_mux_put,
- },
- PRODIGY_CON_HPAMP ,
- PRODIGY_CON_DEEMP ,
- PRODIGY_CON_OVERSAMPLING
-};
-
-
-static int __devinit prodigy_add_controls(ice1712_t *ice)
-{
- unsigned int i;
- int err;
-
- err = snd_ctl_add(ice->card, snd_ctl_new1(&prodigy71_dac_control, ice));
- if (err < 0)
- return err;
-
- for (i = 0; i < ARRAY_SIZE(wm_controls); i++) {
- err = snd_ctl_add(ice->card, snd_ctl_new1(&wm_controls[i], ice));
- if (err < 0)
- return err;
- }
- return 0;
-}
-
-
-/*
- * initialize the chip
- */
-static int __devinit prodigy_init(ice1712_t *ice)
-{
- static unsigned short wm_inits[] = {
-
- /* These come first to reduce init pop noise */
- 0x1b, 0x000, /* ADC Mux */
- 0x1c, 0x009, /* Out Mux1 */
- 0x1d, 0x009, /* Out Mux2 */
-
- 0x18, 0x000, /* All power-up */
-
- 0x16, 0x022, /* I2S, normal polarity, 24bit, high-pass on */
- 0x17, 0x006, /* 128fs, slave mode */
-
- 0x00, 0, /* DAC1 analog mute */
- 0x01, 0, /* DAC2 analog mute */
- 0x02, 0, /* DAC3 analog mute */
- 0x03, 0, /* DAC4 analog mute */
- 0x04, 0, /* DAC5 analog mute */
- 0x05, 0, /* DAC6 analog mute */
- 0x06, 0, /* DAC7 analog mute */
- 0x07, 0, /* DAC8 analog mute */
- 0x08, 0x100, /* master analog mute */
-
- 0x09, 0x7f, /* DAC1 digital full */
- 0x0a, 0x7f, /* DAC2 digital full */
- 0x0b, 0x7f, /* DAC3 digital full */
- 0x0c, 0x7f, /* DAC4 digital full */
- 0x0d, 0x7f, /* DAC5 digital full */
- 0x0e, 0x7f, /* DAC6 digital full */
- 0x0f, 0x7f, /* DAC7 digital full */
- 0x10, 0x7f, /* DAC8 digital full */
- 0x11, 0x1FF, /* master digital full */
-
- 0x12, 0x000, /* phase normal */
- 0x13, 0x090, /* unmute DAC L/R */
- 0x14, 0x000, /* all unmute */
- 0x15, 0x000, /* no deemphasis, no ZFLG */
-
- 0x19, 0x000, /* -12dB ADC/L */
- 0x1a, 0x000 /* -12dB ADC/R */
-
- };
-
- static unsigned short cs_inits[] = {
- 0x0441, /* RUN */
- 0x0100, /* no mute */
- 0x0200, /* */
- 0x0600, /* slave, 24bit */
- };
-
- unsigned int tmp;
- unsigned int i;
-
- printk(KERN_INFO "ice1724: AudioTrak Prodigy 7.1 driver rev. 0.82b\n");
- printk(KERN_INFO "ice1724: This driver is in beta stage. Forsuccess/failure reporting contact\n");
- printk(KERN_INFO "ice1724: Apostolos Dimitromanolakis <apostol@cs.utoronto.ca>\n");
-
- ice->num_total_dacs = 8;
- ice->num_total_adcs = 8;
-
- /* to remeber the register values */
- ice->akm = snd_kcalloc(sizeof(akm4xxx_t), GFP_KERNEL);
- if (! ice->akm)
- return -ENOMEM;
- ice->akm_codecs = 1;
-
- snd_ice1712_gpio_set_dir(ice, 0xbfffff); /* fix this for the time being */
-
- /* reset the wm codec as the SPI mode */
- snd_ice1712_save_gpio_status(ice);
- snd_ice1712_gpio_set_mask(ice,~( PRODIGY_WM_RESET|PRODIGY_WM_CS|
- PRODIGY_CS8415_CS|PRODIGY_HP_AMP_EN ));
-
- tmp = snd_ice1712_gpio_read(ice);
- tmp &= ~PRODIGY_WM_RESET;
- snd_ice1712_gpio_write(ice, tmp);
- udelay(1);
- tmp |= PRODIGY_WM_CS | PRODIGY_CS8415_CS;
- snd_ice1712_gpio_write(ice, tmp);
- udelay(1);
- tmp |= PRODIGY_WM_RESET;
- snd_ice1712_gpio_write(ice, tmp);
- udelay(1);
-
- /* initialize WM8770 codec */
- for (i = 0; i < ARRAY_SIZE(wm_inits); i += 2)
- wm_put(ice, wm_inits[i], wm_inits[i+1]);
-
- /* initialize CS8415A codec */
- for (i = 0; i < ARRAY_SIZE(cs_inits); i++)
- prodigy_spi_write(ice, PRODIGY_CS8415_CS,
- cs_inits[i] | 0x200000, 24);
-
-
- prodigy_set_headphone_amp(ice, 1);
-
- snd_ice1712_restore_gpio_status(ice);
-
- return 0;
-}
-
-/*
- * Prodigy boards don't provide the EEPROM data except for the vendor IDs.
- * hence the driver needs to sets up it properly.
- */
-
-static unsigned char prodigy71_eeprom[] __devinitdata = {
- 0x2b, /* SYSCONF: clock 512, mpu401, spdif-in/ADC, 4DACs */
- 0x80, /* ACLINK: I2S */
- 0xf8, /* I2S: vol, 96k, 24bit, 192k */
- 0xc3, /* SPDIF: out-en, out-int, spdif-in */
- 0xff, /* GPIO_DIR */
- 0xff, /* GPIO_DIR1 */
- 0xbf, /* GPIO_DIR2 */
- 0x00, /* GPIO_MASK */
- 0x00, /* GPIO_MASK1 */
- 0x00, /* GPIO_MASK2 */
- 0x00, /* GPIO_STATE */
- 0x00, /* GPIO_STATE1 */
- 0x00, /* GPIO_STATE2 */
-};
-
-/* entry point */
-struct snd_ice1712_card_info snd_vt1724_prodigy_cards[] __devinitdata = {
- {
- .subvendor = VT1724_SUBDEVICE_PRODIGY71,
- .name = "Audiotrak Prodigy 7.1",
- .chip_init = prodigy_init,
- .build_controls = prodigy_add_controls,
- .eeprom_size = sizeof(prodigy71_eeprom),
- .eeprom_data = prodigy71_eeprom,
- },
- { } /* terminator */
-};
+++ /dev/null
-#ifndef __SOUND_PRODIGY_H
-#define __SOUND_PRODIGY_H
-
-/*
- * ALSA driver for VIA VT1724 (Envy24HT)
- *
- * Lowlevel functions for Terratec PRODIGY cards
- *
- * Copyright (c) 2003 Takashi Iwai <tiwai@suse.de>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- *
- */
-
-#define PRODIGY_DEVICE_DESC "{AudioTrak,Prodigy 7.1},"
-
-#define VT1724_SUBDEVICE_PRODIGY71 0x33495345 /* PRODIGY 7.1 */
-
-extern struct snd_ice1712_card_info snd_vt1724_prodigy_cards[];
-
-/* GPIO bits */
-#define PRODIGY_CS8415_CS (1 << 23)
-#define PRODIGY_CS8415_CDTO (1 << 22)
-#define PRODIGY_WM_RESET (1 << 20)
-#define PRODIGY_WM_CLK (1 << 19)
-#define PRODIGY_WM_DATA (1 << 18)
-#define PRODIGY_WM_RW (1 << 17)
-#define PRODIGY_AC97_RESET (1 << 16)
-#define PRODIGY_DIGITAL_SEL1 (1 << 15)
-// #define PRODIGY_HP_SEL (1 << 14)
-#define PRODIGY_WM_CS (1 << 12)
-
-#define PRODIGY_HP_AMP_EN (1 << 14)
-
-
-/* WM8770 registers */
-#define WM_DAC_ATTEN 0x00 /* DAC1-8 analog attenuation */
-#define WM_DAC_MASTER_ATTEN 0x08 /* DAC master analog attenuation */
-#define WM_DAC_DIG_ATTEN 0x09 /* DAC1-8 digital attenuation */
-#define WM_DAC_DIG_MATER_ATTEN 0x11 /* DAC master digital attenuation */
-#define WM_PHASE_SWAP 0x12 /* DAC phase */
-#define WM_DAC_CTRL1 0x13 /* DAC control bits */
-#define WM_MUTE 0x14 /* mute controls */
-#define WM_DAC_CTRL2 0x15 /* de-emphasis and zefo-flag */
-#define WM_INT_CTRL 0x16 /* interface control */
-#define WM_MASTER 0x17 /* master clock and mode */
-#define WM_POWERDOWN 0x18 /* power-down controls */
-#define WM_ADC_GAIN 0x19 /* ADC gain L(19)/R(1a) */
-#define WM_ADC_MUX 0x1b /* input MUX */
-#define WM_OUT_MUX1 0x1c /* output MUX */
-#define WM_OUT_MUX2 0x1e /* output MUX */
-#define WM_RESET 0x1f /* software reset */
-
-
-#endif /* __SOUND_PRODIGY_H */
git://git.onelab.eu / linux-2.6.git / commitdiff