1 /* linux/drivers/cdrom/cdrom.c.
2 Copyright (c) 1996, 1997 David A. van Leeuwen.
3 Copyright (c) 1997, 1998 Erik Andersen <andersee@debian.org>
4 Copyright (c) 1998, 1999 Jens Axboe <axboe@image.dk>
6 May be copied or modified under the terms of the GNU General Public
7 License. See linux/COPYING for more information.
9 Uniform CD-ROM driver for Linux.
10 See Documentation/cdrom/cdrom-standard.tex for usage information.
12 The routines in the file provide a uniform interface between the
13 software that uses CD-ROMs and the various low-level drivers that
14 actually talk to the hardware. Suggestions are welcome.
15 Patches that work are more welcome though. ;-)
18 ----------------------------------
20 -- Modify sysctl/proc interface. I plan on having one directory per
21 drive, with entries for outputing general drive information, and sysctl
22 based tunable parameters such as whether the tray should auto-close for
23 that drive. Suggestions (or patches) for this welcome!
27 ----------------------------------
28 1.00 Date Unknown -- David van Leeuwen <david@tm.tno.nl>
29 -- Initial version by David A. van Leeuwen. I don't have a detailed
30 changelog for the 1.x series, David?
32 2.00 Dec 2, 1997 -- Erik Andersen <andersee@debian.org>
33 -- New maintainer! As David A. van Leeuwen has been too busy to activly
34 maintain and improve this driver, I am now carrying on the torch. If
35 you have a problem with this driver, please feel free to contact me.
37 -- Added (rudimentary) sysctl interface. I realize this is really weak
38 right now, and is _very_ badly implemented. It will be improved...
40 -- Modified CDROM_DISC_STATUS so that it is now incorporated into
41 the Uniform CD-ROM driver via the cdrom_count_tracks function.
42 The cdrom_count_tracks function helps resolve some of the false
43 assumptions of the CDROM_DISC_STATUS ioctl, and is also used to check
44 for the correct media type when mounting or playing audio from a CD.
46 -- Remove the calls to verify_area and only use the copy_from_user and
47 copy_to_user stuff, since these calls now provide their own memory
48 checking with the 2.1.x kernels.
50 -- Major update to return codes so that errors from low-level drivers
51 are passed on through (thanks to Gerd Knorr for pointing out this
54 -- Made it so if a function isn't implemented in a low-level driver,
55 ENOSYS is now returned instead of EINVAL.
57 -- Simplified some complex logic so that the source code is easier to read.
59 -- Other stuff I probably forgot to mention (lots of changes).
61 2.01 to 2.11 Dec 1997-Jan 1998
62 -- TO-DO! Write changelogs for 2.01 to 2.12.
64 2.12 Jan 24, 1998 -- Erik Andersen <andersee@debian.org>
65 -- Fixed a bug in the IOCTL_IN and IOCTL_OUT macros. It turns out that
66 copy_*_user does not return EFAULT on error, but instead returns the number
67 of bytes not copied. I was returning whatever non-zero stuff came back from
68 the copy_*_user functions directly, which would result in strange errors.
70 2.13 July 17, 1998 -- Erik Andersen <andersee@debian.org>
71 -- Fixed a bug in CDROM_SELECT_SPEED where you couldn't lower the speed
72 of the drive. Thanks to Tobias Ringstr|m <tori@prosolvia.se> for pointing
73 this out and providing a simple fix.
74 -- Fixed the procfs-unload-module bug with the fill_inode procfs callback.
75 thanks to Andrea Arcangeli
76 -- Fixed it so that the /proc entry now also shows up when cdrom is
77 compiled into the kernel. Before it only worked when loaded as a module.
79 2.14 August 17, 1998 -- Erik Andersen <andersee@debian.org>
80 -- Fixed a bug in cdrom_media_changed and handling of reporting that
81 the media had changed for devices that _don't_ implement media_changed.
82 Thanks to Grant R. Guenther <grant@torque.net> for spotting this bug.
83 -- Made a few things more pedanticly correct.
85 2.50 Oct 19, 1998 - Jens Axboe <axboe@image.dk>
86 -- New maintainers! Erik was too busy to continue the work on the driver,
87 so now Chris Zwilling <chris@cloudnet.com> and Jens Axboe <axboe@image.dk>
88 will do their best to follow in his footsteps
90 2.51 Dec 20, 1998 - Jens Axboe <axboe@image.dk>
91 -- Check if drive is capable of doing what we ask before blindly changing
92 cdi->options in various ioctl.
93 -- Added version to proc entry.
95 2.52 Jan 16, 1999 - Jens Axboe <axboe@image.dk>
96 -- Fixed an error in open_for_data where we would sometimes not return
97 the correct error value. Thanks Huba Gaspar <huba@softcell.hu>.
98 -- Fixed module usage count - usage was based on /proc/sys/dev
99 instead of /proc/sys/dev/cdrom. This could lead to an oops when other
100 modules had entries in dev. Feb 02 - real bug was in sysctl.c where
101 dev would be removed even though it was used. cdrom.c just illuminated
104 2.53 Feb 22, 1999 - Jens Axboe <axboe@image.dk>
105 -- Fixup of several ioctl calls, in particular CDROM_SET_OPTIONS has
106 been "rewritten" because capabilities and options aren't in sync. They
108 -- Added CDROM_LOCKDOOR ioctl. Locks the door and keeps it that way.
109 -- Added CDROM_RESET ioctl.
110 -- Added CDROM_DEBUG ioctl. Enable debug messages on-the-fly.
111 -- Added CDROM_GET_CAPABILITY ioctl. This relieves userspace programs
112 from parsing /proc/sys/dev/cdrom/info.
114 2.54 Mar 15, 1999 - Jens Axboe <axboe@image.dk>
115 -- Check capability mask from low level driver when counting tracks as
116 per suggestion from Corey J. Scotts <cstotts@blue.weeg.uiowa.edu>.
118 2.55 Apr 25, 1999 - Jens Axboe <axboe@image.dk>
119 -- autoclose was mistakenly checked against CDC_OPEN_TRAY instead of
121 -- proc info didn't mask against capabilities mask.
123 3.00 Aug 5, 1999 - Jens Axboe <axboe@image.dk>
124 -- Unified audio ioctl handling across CD-ROM drivers. A lot of the
125 code was duplicated before. Drives that support the generic packet
126 interface are now being fed packets from here instead.
127 -- First attempt at adding support for MMC2 commands - for DVD and
128 CD-R(W) drives. Only the DVD parts are in now - the interface used is
129 the same as for the audio ioctls.
130 -- ioctl cleanups. if a drive couldn't play audio, it didn't get
131 a change to perform device specific ioctls as well.
132 -- Defined CDROM_CAN(CDC_XXX) for checking the capabilities.
133 -- Put in sysctl files for autoclose, autoeject, check_media, debug,
135 -- /proc/sys/dev/cdrom/info has been updated to also contain info about
136 CD-Rx and DVD capabilities.
137 -- Now default to checking media type.
138 -- CDROM_SEND_PACKET ioctl added. The infrastructure was in place for
139 doing this anyway, with the generic_packet addition.
141 3.01 Aug 6, 1999 - Jens Axboe <axboe@image.dk>
142 -- Fix up the sysctl handling so that the option flags get set
144 -- Fix up ioctl handling so the device specific ones actually get
147 3.02 Aug 8, 1999 - Jens Axboe <axboe@image.dk>
148 -- Fixed volume control on SCSI drives (or others with longer audio
150 -- Fixed a couple of DVD minors. Thanks to Andrew T. Veliath
151 <andrewtv@usa.net> for telling me and for having defined the various
152 DVD structures and ioctls in the first place! He designed the original
153 DVD patches for ide-cd and while I rearranged and unified them, the
154 interface is still the same.
156 3.03 Sep 1, 1999 - Jens Axboe <axboe@image.dk>
157 -- Moved the rest of the audio ioctls from the CD-ROM drivers here. Only
158 CDROMREADTOCENTRY and CDROMREADTOCHDR are left.
159 -- Moved the CDROMREADxxx ioctls in here.
160 -- Defined the cdrom_get_last_written and cdrom_get_next_block as ioctls
161 and exported functions.
162 -- Erik Andersen <andersen@xmission.com> modified all SCMD_ commands
163 to now read GPCMD_ for the new generic packet interface. All low level
164 drivers are updated as well.
165 -- Various other cleanups.
167 3.04 Sep 12, 1999 - Jens Axboe <axboe@image.dk>
168 -- Fixed a couple of possible memory leaks (if an operation failed and
169 we didn't free the buffer before returning the error).
170 -- Integrated Uniform CD Changer handling from Richard Sharman
171 <rsharman@pobox.com>.
172 -- Defined CD_DVD and CD_CHANGER log levels.
173 -- Fixed the CDROMREADxxx ioctls.
174 -- CDROMPLAYTRKIND uses the GPCMD_PLAY_AUDIO_MSF command - too few
175 drives supported it. We lose the index part, however.
176 -- Small modifications to accommodate opens of /dev/hdc1, required
177 for ide-cd to handle multisession discs.
178 -- Export cdrom_mode_sense and cdrom_mode_select.
179 -- init_cdrom_command() for setting up a cgc command.
181 3.05 Oct 24, 1999 - Jens Axboe <axboe@image.dk>
182 -- Changed the interface for CDROM_SEND_PACKET. Before it was virtually
183 impossible to send the drive data in a sensible way.
184 -- Lowered stack usage in mmc_ioctl(), dvd_read_disckey(), and
186 -- Added setup of write mode for packet writing.
187 -- Fixed CDDA ripping with cdda2wav - accept much larger requests of
188 number of frames and split the reads in blocks of 8.
190 3.06 Dec 13, 1999 - Jens Axboe <axboe@image.dk>
191 -- Added support for changing the region of DVD drives.
192 -- Added sense data to generic command.
194 3.07 Feb 2, 2000 - Jens Axboe <axboe@suse.de>
195 -- Do same "read header length" trick in cdrom_get_disc_info() as
196 we do in cdrom_get_track_info() -- some drive don't obey specs and
197 fail if they can't supply the full Mt Fuji size table.
198 -- Deleted stuff related to setting up write modes. It has a different
200 -- Clear header length in mode_select unconditionally.
201 -- Removed the register_disk() that was added, not needed here.
203 3.08 May 1, 2000 - Jens Axboe <axboe@suse.de>
204 -- Fix direction flag in setup_send_key and setup_report_key. This
205 gave some SCSI adapters problems.
206 -- Always return -EROFS for write opens
207 -- Convert to module_init/module_exit style init and remove some
208 of the #ifdef MODULE stuff
209 -- Fix several dvd errors - DVD_LU_SEND_ASF should pass agid,
210 DVD_HOST_SEND_RPC_STATE did not set buffer size in cdb, and
211 dvd_do_auth passed uninitialized data to drive because init_cdrom_command
212 did not clear a 0 sized buffer.
214 3.09 May 12, 2000 - Jens Axboe <axboe@suse.de>
215 -- Fix Video-CD on SCSI drives that don't support READ_CD command. In
216 that case switch block size and issue plain READ_10 again, then switch
219 3.10 Jun 10, 2000 - Jens Axboe <axboe@suse.de>
220 -- Fix volume control on CD's - old SCSI-II drives now use their own
221 code, as doing MODE6 stuff in here is really not my intention.
222 -- Use READ_DISC_INFO for more reliable end-of-disc.
224 3.11 Jun 12, 2000 - Jens Axboe <axboe@suse.de>
225 -- Fix bug in getting rpc phase 2 region info.
226 -- Reinstate "correct" CDROMPLAYTRKIND
228 3.12 Oct 18, 2000 - Jens Axboe <axboe@suse.de>
229 -- Use quiet bit on packet commands not known to work
231 3.20 Dec 17, 2003 - Jens Axboe <axboe@suse.de>
232 -- Various fixes and lots of cleanups not listed :-)
234 -- Mt Rainier support
235 -- DVD-RAM write open fixes
237 Nov 5 2001, Aug 8 2002. Modified by Andy Polyakov
238 <appro@fy.chalmers.se> to support MMC-3 compliant DVD+RW units.
240 Modified by Nigel Kukard <nkukard@lbsd.net> - support DVD+RW
241 2.4.x patch by Andy Polyakov <appro@fy.chalmers.se>
243 -------------------------------------------------------------------------*/
245 #define REVISION "Revision: 3.20"
246 #define VERSION "Id: cdrom.c 3.20 2003/12/17"
248 /* I use an error-log mask to give fine grain control over the type of
249 messages dumped to the system logs. The available masks include: */
250 #define CD_NOTHING 0x0
251 #define CD_WARNING 0x1
252 #define CD_REG_UNREG 0x2
253 #define CD_DO_IOCTL 0x4
255 #define CD_CLOSE 0x10
256 #define CD_COUNT_TRACKS 0x20
257 #define CD_CHANGER 0x40
260 /* Define this to remove _all_ the debugging messages */
261 /* #define ERRLOGMASK CD_NOTHING */
262 #define ERRLOGMASK CD_WARNING
263 /* #define ERRLOGMASK (CD_WARNING|CD_OPEN|CD_COUNT_TRACKS|CD_CLOSE) */
264 /* #define ERRLOGMASK (CD_WARNING|CD_REG_UNREG|CD_DO_IOCTL|CD_OPEN|CD_CLOSE|CD_COUNT_TRACKS) */
266 #include <linux/config.h>
267 #include <linux/module.h>
268 #include <linux/fs.h>
269 #include <linux/buffer_head.h>
270 #include <linux/major.h>
271 #include <linux/types.h>
272 #include <linux/errno.h>
273 #include <linux/kernel.h>
274 #include <linux/mm.h>
275 #include <linux/slab.h>
276 #include <linux/cdrom.h>
277 #include <linux/sysctl.h>
278 #include <linux/proc_fs.h>
279 #include <linux/blkpg.h>
280 #include <linux/init.h>
281 #include <linux/fcntl.h>
282 #include <linux/blkdev.h>
283 #include <linux/times.h>
285 #include <asm/uaccess.h>
287 /* used to tell the module to turn on full debugging messages */
289 /* used to keep tray locked at all times */
290 static int keeplocked;
291 /* default compatibility mode */
292 static int autoclose=1;
293 static int autoeject;
294 static int lockdoor = 1;
295 /* will we ever get to use this... sigh. */
296 static int check_media_type;
297 /* automatically restart mrw format */
298 static int mrw_format_restart = 1;
299 module_param(debug, bool, 0);
300 module_param(autoclose, bool, 0);
301 module_param(autoeject, bool, 0);
302 module_param(lockdoor, bool, 0);
303 module_param(check_media_type, bool, 0);
304 module_param(mrw_format_restart, bool, 0);
306 static DEFINE_SPINLOCK(cdrom_lock);
308 static const char *mrw_format_status[] = {
315 static const char *mrw_address_space[] = { "DMA", "GAA" };
317 #if (ERRLOGMASK!=CD_NOTHING)
318 #define cdinfo(type, fmt, args...) \
319 if ((ERRLOGMASK & type) || debug==1 ) \
320 printk(KERN_INFO "cdrom: " fmt, ## args)
322 #define cdinfo(type, fmt, args...)
325 /* These are used to simplify getting data in from and back to user land */
326 #define IOCTL_IN(arg, type, in) \
327 if (copy_from_user(&(in), (type __user *) (arg), sizeof (in))) \
330 #define IOCTL_OUT(arg, type, out) \
331 if (copy_to_user((type __user *) (arg), &(out), sizeof (out))) \
334 /* The (cdo->capability & ~cdi->mask & CDC_XXX) construct was used in
335 a lot of places. This macro makes the code more clear. */
336 #define CDROM_CAN(type) (cdi->ops->capability & ~cdi->mask & (type))
338 /* used in the audio ioctls */
339 #define CHECKAUDIO if ((ret=check_for_audio_disc(cdi, cdo))) return ret
341 /* Not-exported routines. */
342 static int open_for_data(struct cdrom_device_info * cdi);
343 static int check_for_audio_disc(struct cdrom_device_info * cdi,
344 struct cdrom_device_ops * cdo);
345 static void sanitize_format(union cdrom_addr *addr,
346 u_char * curr, u_char requested);
347 static int mmc_ioctl(struct cdrom_device_info *cdi, unsigned int cmd,
350 int cdrom_get_last_written(struct cdrom_device_info *, long *);
351 static int cdrom_get_next_writable(struct cdrom_device_info *, long *);
352 static void cdrom_count_tracks(struct cdrom_device_info *, tracktype*);
354 static int cdrom_mrw_exit(struct cdrom_device_info *cdi);
356 static int cdrom_get_disc_info(struct cdrom_device_info *cdi, disc_information *di);
359 static void cdrom_sysctl_register(void);
360 #endif /* CONFIG_SYSCTL */
361 static struct cdrom_device_info *topCdromPtr;
363 static int cdrom_dummy_generic_packet(struct cdrom_device_info *cdi,
364 struct packet_command *cgc)
367 cgc->sense->sense_key = 0x05;
368 cgc->sense->asc = 0x20;
369 cgc->sense->ascq = 0x00;
376 /* This macro makes sure we don't have to check on cdrom_device_ops
377 * existence in the run-time routines below. Change_capability is a
378 * hack to have the capability flags defined const, while we can still
379 * change it here without gcc complaining at every line.
381 #define ENSURE(call, bits) if (cdo->call == NULL) *change_capability &= ~(bits)
383 int register_cdrom(struct cdrom_device_info *cdi)
385 static char banner_printed;
386 struct cdrom_device_ops *cdo = cdi->ops;
387 int *change_capability = (int *)&cdo->capability; /* hack */
389 cdinfo(CD_OPEN, "entering register_cdrom\n");
391 if (cdo->open == NULL || cdo->release == NULL)
393 if (!banner_printed) {
394 printk(KERN_INFO "Uniform CD-ROM driver " REVISION "\n");
397 cdrom_sysctl_register();
398 #endif /* CONFIG_SYSCTL */
401 ENSURE(drive_status, CDC_DRIVE_STATUS );
402 ENSURE(media_changed, CDC_MEDIA_CHANGED);
403 ENSURE(tray_move, CDC_CLOSE_TRAY | CDC_OPEN_TRAY);
404 ENSURE(lock_door, CDC_LOCK);
405 ENSURE(select_speed, CDC_SELECT_SPEED);
406 ENSURE(get_last_session, CDC_MULTI_SESSION);
407 ENSURE(get_mcn, CDC_MCN);
408 ENSURE(reset, CDC_RESET);
409 ENSURE(audio_ioctl, CDC_PLAY_AUDIO);
410 ENSURE(dev_ioctl, CDC_IOCTLS);
411 ENSURE(generic_packet, CDC_GENERIC_PACKET);
414 cdi->options = CDO_USE_FFLAGS;
416 if (autoclose==1 && CDROM_CAN(CDC_CLOSE_TRAY))
417 cdi->options |= (int) CDO_AUTO_CLOSE;
418 if (autoeject==1 && CDROM_CAN(CDC_OPEN_TRAY))
419 cdi->options |= (int) CDO_AUTO_EJECT;
421 cdi->options |= (int) CDO_LOCK;
422 if (check_media_type==1)
423 cdi->options |= (int) CDO_CHECK_TYPE;
425 if (CDROM_CAN(CDC_MRW_W))
426 cdi->exit = cdrom_mrw_exit;
429 cdi->cdda_method = CDDA_BPC_FULL;
431 cdi->cdda_method = CDDA_OLD;
433 if (!cdo->generic_packet)
434 cdo->generic_packet = cdrom_dummy_generic_packet;
436 cdinfo(CD_REG_UNREG, "drive \"/dev/%s\" registered\n", cdi->name);
437 spin_lock(&cdrom_lock);
438 cdi->next = topCdromPtr;
440 spin_unlock(&cdrom_lock);
445 int unregister_cdrom(struct cdrom_device_info *unreg)
447 struct cdrom_device_info *cdi, *prev;
448 cdinfo(CD_OPEN, "entering unregister_cdrom\n");
451 spin_lock(&cdrom_lock);
453 while (cdi && cdi != unreg) {
459 spin_unlock(&cdrom_lock);
463 prev->next = cdi->next;
465 topCdromPtr = cdi->next;
467 spin_unlock(&cdrom_lock);
472 cdi->ops->n_minors--;
473 cdinfo(CD_REG_UNREG, "drive \"/dev/%s\" unregistered\n", cdi->name);
477 int cdrom_get_media_event(struct cdrom_device_info *cdi,
478 struct media_event_desc *med)
480 struct packet_command cgc;
481 unsigned char buffer[8];
482 struct event_header *eh = (struct event_header *) buffer;
484 init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_READ);
485 cgc.cmd[0] = GPCMD_GET_EVENT_STATUS_NOTIFICATION;
486 cgc.cmd[1] = 1; /* IMMED */
487 cgc.cmd[4] = 1 << 4; /* media event */
488 cgc.cmd[8] = sizeof(buffer);
491 if (cdi->ops->generic_packet(cdi, &cgc))
494 if (be16_to_cpu(eh->data_len) < sizeof(*med))
497 if (eh->nea || eh->notification_class != 0x4)
500 memcpy(med, &buffer[sizeof(*eh)], sizeof(*med));
505 * the first prototypes used 0x2c as the page code for the mrw mode page,
506 * subsequently this was changed to 0x03. probe the one used by this drive
508 static int cdrom_mrw_probe_pc(struct cdrom_device_info *cdi)
510 struct packet_command cgc;
513 init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_READ);
518 if (!cdrom_mode_sense(cdi, &cgc, MRW_MODE_PC, 0)) {
519 cdi->mrw_mode_page = MRW_MODE_PC;
521 } else if (!cdrom_mode_sense(cdi, &cgc, MRW_MODE_PC_PRE1, 0)) {
522 cdi->mrw_mode_page = MRW_MODE_PC_PRE1;
529 static int cdrom_is_mrw(struct cdrom_device_info *cdi, int *write)
531 struct packet_command cgc;
532 struct mrw_feature_desc *mfd;
533 unsigned char buffer[16];
538 init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_READ);
540 cgc.cmd[0] = GPCMD_GET_CONFIGURATION;
541 cgc.cmd[3] = CDF_MRW;
542 cgc.cmd[8] = sizeof(buffer);
545 if ((ret = cdi->ops->generic_packet(cdi, &cgc)))
548 mfd = (struct mrw_feature_desc *)&buffer[sizeof(struct feature_header)];
549 if (be16_to_cpu(mfd->feature_code) != CDF_MRW)
553 if ((ret = cdrom_mrw_probe_pc(cdi))) {
561 static int cdrom_mrw_bgformat(struct cdrom_device_info *cdi, int cont)
563 struct packet_command cgc;
564 unsigned char buffer[12];
567 printk(KERN_INFO "cdrom: %sstarting format\n", cont ? "Re" : "");
570 * FmtData bit set (bit 4), format type is 1
572 init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_WRITE);
573 cgc.cmd[0] = GPCMD_FORMAT_UNIT;
574 cgc.cmd[1] = (1 << 4) | 1;
576 cgc.timeout = 5 * 60 * HZ;
579 * 4 byte format list header, 8 byte format list descriptor
592 buffer[8] = 0x24 << 2;
595 ret = cdi->ops->generic_packet(cdi, &cgc);
597 printk(KERN_INFO "cdrom: bgformat failed\n");
602 static int cdrom_mrw_bgformat_susp(struct cdrom_device_info *cdi, int immed)
604 struct packet_command cgc;
606 init_cdrom_command(&cgc, NULL, 0, CGC_DATA_NONE);
607 cgc.cmd[0] = GPCMD_CLOSE_TRACK;
610 * Session = 1, Track = 0
612 cgc.cmd[1] = !!immed;
615 cgc.timeout = 5 * 60 * HZ;
617 return cdi->ops->generic_packet(cdi, &cgc);
620 static int cdrom_flush_cache(struct cdrom_device_info *cdi)
622 struct packet_command cgc;
624 init_cdrom_command(&cgc, NULL, 0, CGC_DATA_NONE);
625 cgc.cmd[0] = GPCMD_FLUSH_CACHE;
627 cgc.timeout = 5 * 60 * HZ;
629 return cdi->ops->generic_packet(cdi, &cgc);
632 static int cdrom_mrw_exit(struct cdrom_device_info *cdi)
637 ret = cdrom_get_disc_info(cdi, &di);
638 if (ret < 0 || ret < (int)offsetof(typeof(di),disc_type))
642 if (di.mrw_status == CDM_MRW_BGFORMAT_ACTIVE) {
643 printk(KERN_INFO "cdrom: issuing MRW back ground "
645 ret = cdrom_mrw_bgformat_susp(cdi, 0);
648 if (!ret && cdi->media_written)
649 ret = cdrom_flush_cache(cdi);
654 static int cdrom_mrw_set_lba_space(struct cdrom_device_info *cdi, int space)
656 struct packet_command cgc;
657 struct mode_page_header *mph;
659 int ret, offset, size;
661 init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_READ);
664 cgc.buflen = sizeof(buffer);
666 if ((ret = cdrom_mode_sense(cdi, &cgc, cdi->mrw_mode_page, 0)))
669 mph = (struct mode_page_header *) buffer;
670 offset = be16_to_cpu(mph->desc_length);
671 size = be16_to_cpu(mph->mode_data_length) + 2;
673 buffer[offset + 3] = space;
676 if ((ret = cdrom_mode_select(cdi, &cgc)))
679 printk(KERN_INFO "cdrom: %s: mrw address space %s selected\n", cdi->name, mrw_address_space[space]);
683 static int cdrom_get_random_writable(struct cdrom_device_info *cdi,
684 struct rwrt_feature_desc *rfd)
686 struct packet_command cgc;
690 init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_READ);
692 cgc.cmd[0] = GPCMD_GET_CONFIGURATION; /* often 0x46 */
693 cgc.cmd[3] = CDF_RWRT; /* often 0x0020 */
694 cgc.cmd[8] = sizeof(buffer); /* often 0x18 */
697 if ((ret = cdi->ops->generic_packet(cdi, &cgc)))
700 memcpy(rfd, &buffer[sizeof(struct feature_header)], sizeof (*rfd));
704 static int cdrom_has_defect_mgt(struct cdrom_device_info *cdi)
706 struct packet_command cgc;
711 init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_READ);
713 cgc.cmd[0] = GPCMD_GET_CONFIGURATION;
714 cgc.cmd[3] = CDF_HWDM;
715 cgc.cmd[8] = sizeof(buffer);
718 if ((ret = cdi->ops->generic_packet(cdi, &cgc)))
721 feature_code = (__u16 *) &buffer[sizeof(struct feature_header)];
722 if (be16_to_cpu(*feature_code) == CDF_HWDM)
729 static int cdrom_is_random_writable(struct cdrom_device_info *cdi, int *write)
731 struct rwrt_feature_desc rfd;
736 if ((ret = cdrom_get_random_writable(cdi, &rfd)))
739 if (CDF_RWRT == be16_to_cpu(rfd.feature_code))
745 static int cdrom_media_erasable(struct cdrom_device_info *cdi)
750 ret = cdrom_get_disc_info(cdi, &di);
751 if (ret < 0 || ret < offsetof(typeof(di), n_first_track))
758 * FIXME: check RO bit
760 static int cdrom_dvdram_open_write(struct cdrom_device_info *cdi)
762 int ret = cdrom_media_erasable(cdi);
765 * allow writable open if media info read worked and media is
766 * erasable, _or_ if it fails since not all drives support it
774 static int cdrom_mrw_open_write(struct cdrom_device_info *cdi)
780 * always reset to DMA lba space on open
782 if (cdrom_mrw_set_lba_space(cdi, MRW_LBA_DMA)) {
783 printk(KERN_ERR "cdrom: failed setting lba address space\n");
787 ret = cdrom_get_disc_info(cdi, &di);
788 if (ret < 0 || ret < offsetof(typeof(di),disc_type))
796 * 0 - not MRW formatted
797 * 1 - MRW bgformat started, but not running or complete
798 * 2 - MRW bgformat in progress
799 * 3 - MRW formatting complete
802 printk(KERN_INFO "cdrom open: mrw_status '%s'\n",
803 mrw_format_status[di.mrw_status]);
806 else if (di.mrw_status == CDM_MRW_BGFORMAT_INACTIVE &&
808 ret = cdrom_mrw_bgformat(cdi, 1);
813 static int mo_open_write(struct cdrom_device_info *cdi)
815 struct packet_command cgc;
819 init_cdrom_command(&cgc, &buffer, 4, CGC_DATA_READ);
823 * obtain write protect information as per
824 * drivers/scsi/sd.c:sd_read_write_protect_flag
827 ret = cdrom_mode_sense(cdi, &cgc, GPMODE_ALL_PAGES, 0);
829 ret = cdrom_mode_sense(cdi, &cgc, GPMODE_VENDOR_PAGE, 0);
832 ret = cdrom_mode_sense(cdi, &cgc, GPMODE_ALL_PAGES, 0);
835 /* drive gave us no info, let the user go ahead */
839 return buffer[3] & 0x80;
842 static int cdrom_ram_open_write(struct cdrom_device_info *cdi)
844 struct rwrt_feature_desc rfd;
847 if ((ret = cdrom_has_defect_mgt(cdi)))
850 if ((ret = cdrom_get_random_writable(cdi, &rfd)))
852 else if (CDF_RWRT == be16_to_cpu(rfd.feature_code))
855 cdinfo(CD_OPEN, "can open for random write\n");
859 static void cdrom_mmc3_profile(struct cdrom_device_info *cdi)
861 struct packet_command cgc;
863 int ret, mmc3_profile;
865 init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_READ);
867 cgc.cmd[0] = GPCMD_GET_CONFIGURATION;
869 cgc.cmd[2] = cgc.cmd[3] = 0; /* Starting Feature Number */
870 cgc.cmd[8] = sizeof(buffer); /* Allocation Length */
873 if ((ret = cdi->ops->generic_packet(cdi, &cgc)))
874 mmc3_profile = 0xffff;
876 mmc3_profile = (buffer[6] << 8) | buffer[7];
878 cdi->mmc3_profile = mmc3_profile;
881 static int cdrom_is_dvd_rw(struct cdrom_device_info *cdi)
883 switch (cdi->mmc3_profile) {
884 case 0x12: /* DVD-RAM */
885 case 0x1A: /* DVD+RW */
893 * returns 0 for ok to open write, non-0 to disallow
895 static int cdrom_open_write(struct cdrom_device_info *cdi)
897 int mrw, mrw_write, ram_write;
901 if (!cdrom_is_mrw(cdi, &mrw_write))
904 if (CDROM_CAN(CDC_MO_DRIVE))
907 (void) cdrom_is_random_writable(cdi, &ram_write);
910 cdi->mask &= ~CDC_MRW;
912 cdi->mask |= CDC_MRW;
915 cdi->mask &= ~CDC_MRW_W;
917 cdi->mask |= CDC_MRW_W;
920 cdi->mask &= ~CDC_RAM;
922 cdi->mask |= CDC_RAM;
924 if (CDROM_CAN(CDC_MRW_W))
925 ret = cdrom_mrw_open_write(cdi);
926 else if (CDROM_CAN(CDC_DVD_RAM))
927 ret = cdrom_dvdram_open_write(cdi);
928 else if (CDROM_CAN(CDC_RAM) &&
929 !CDROM_CAN(CDC_CD_R|CDC_CD_RW|CDC_DVD|CDC_DVD_R|CDC_MRW|CDC_MO_DRIVE))
930 ret = cdrom_ram_open_write(cdi);
931 else if (CDROM_CAN(CDC_MO_DRIVE))
932 ret = mo_open_write(cdi);
933 else if (!cdrom_is_dvd_rw(cdi))
939 static void cdrom_dvd_rw_close_write(struct cdrom_device_info *cdi)
941 struct packet_command cgc;
943 if (cdi->mmc3_profile != 0x1a) {
944 cdinfo(CD_CLOSE, "%s: No DVD+RW\n", cdi->name);
948 if (!cdi->media_written) {
949 cdinfo(CD_CLOSE, "%s: DVD+RW media clean\n", cdi->name);
953 printk(KERN_INFO "cdrom: %s: dirty DVD+RW media, \"finalizing\"\n",
956 init_cdrom_command(&cgc, NULL, 0, CGC_DATA_NONE);
957 cgc.cmd[0] = GPCMD_FLUSH_CACHE;
959 cdi->ops->generic_packet(cdi, &cgc);
961 init_cdrom_command(&cgc, NULL, 0, CGC_DATA_NONE);
962 cgc.cmd[0] = GPCMD_CLOSE_TRACK;
963 cgc.timeout = 3000*HZ;
965 cdi->ops->generic_packet(cdi, &cgc);
967 init_cdrom_command(&cgc, NULL, 0, CGC_DATA_NONE);
968 cgc.cmd[0] = GPCMD_CLOSE_TRACK;
969 cgc.cmd[2] = 2; /* Close session */
971 cgc.timeout = 3000*HZ;
972 cdi->ops->generic_packet(cdi, &cgc);
974 cdi->media_written = 0;
977 static int cdrom_close_write(struct cdrom_device_info *cdi)
980 return cdrom_flush_cache(cdi);
986 /* We use the open-option O_NONBLOCK to indicate that the
987 * purpose of opening is only for subsequent ioctl() calls; no device
988 * integrity checks are performed.
990 * We hope that all cd-player programs will adopt this convention. It
991 * is in their own interest: device control becomes a lot easier
994 int cdrom_open(struct cdrom_device_info *cdi, struct inode *ip, struct file *fp)
998 cdinfo(CD_OPEN, "entering cdrom_open\n");
1000 /* if this was a O_NONBLOCK open and we should honor the flags,
1001 * do a quick open without drive/disc integrity checks. */
1003 if ((fp->f_flags & O_NONBLOCK) && (cdi->options & CDO_USE_FFLAGS)) {
1004 ret = cdi->ops->open(cdi, 1);
1006 ret = open_for_data(cdi);
1009 cdrom_mmc3_profile(cdi);
1010 if (fp->f_mode & FMODE_WRITE) {
1012 if (cdrom_open_write(cdi))
1014 if (!CDROM_CAN(CDC_RAM))
1017 cdi->media_written = 0;
1024 cdinfo(CD_OPEN, "Use count for \"/dev/%s\" now %d\n",
1025 cdi->name, cdi->use_count);
1026 /* Do this on open. Don't wait for mount, because they might
1027 not be mounting, but opening with O_NONBLOCK */
1028 check_disk_change(ip->i_bdev);
1036 int open_for_data(struct cdrom_device_info * cdi)
1039 struct cdrom_device_ops *cdo = cdi->ops;
1041 cdinfo(CD_OPEN, "entering open_for_data\n");
1042 /* Check if the driver can report drive status. If it can, we
1043 can do clever things. If it can't, well, we at least tried! */
1044 if (cdo->drive_status != NULL) {
1045 ret = cdo->drive_status(cdi, CDSL_CURRENT);
1046 cdinfo(CD_OPEN, "drive_status=%d\n", ret);
1047 if (ret == CDS_TRAY_OPEN) {
1048 cdinfo(CD_OPEN, "the tray is open...\n");
1049 /* can/may i close it? */
1050 if (CDROM_CAN(CDC_CLOSE_TRAY) &&
1051 cdi->options & CDO_AUTO_CLOSE) {
1052 cdinfo(CD_OPEN, "trying to close the tray.\n");
1053 ret=cdo->tray_move(cdi,0);
1055 cdinfo(CD_OPEN, "bummer. tried to close the tray but failed.\n");
1056 /* Ignore the error from the low
1057 level driver. We don't care why it
1058 couldn't close the tray. We only care
1059 that there is no disc in the drive,
1060 since that is the _REAL_ problem here.*/
1062 goto clean_up_and_return;
1065 cdinfo(CD_OPEN, "bummer. this drive can't close the tray.\n");
1067 goto clean_up_and_return;
1069 /* Ok, the door should be closed now.. Check again */
1070 ret = cdo->drive_status(cdi, CDSL_CURRENT);
1071 if ((ret == CDS_NO_DISC) || (ret==CDS_TRAY_OPEN)) {
1072 cdinfo(CD_OPEN, "bummer. the tray is still not closed.\n");
1073 cdinfo(CD_OPEN, "tray might not contain a medium.\n");
1075 goto clean_up_and_return;
1077 cdinfo(CD_OPEN, "the tray is now closed.\n");
1079 /* the door should be closed now, check for the disc */
1080 ret = cdo->drive_status(cdi, CDSL_CURRENT);
1081 if (ret!=CDS_DISC_OK) {
1083 goto clean_up_and_return;
1086 cdrom_count_tracks(cdi, &tracks);
1087 if (tracks.error == CDS_NO_DISC) {
1088 cdinfo(CD_OPEN, "bummer. no disc.\n");
1090 goto clean_up_and_return;
1092 /* CD-Players which don't use O_NONBLOCK, workman
1093 * for example, need bit CDO_CHECK_TYPE cleared! */
1094 if (tracks.data==0) {
1095 if (cdi->options & CDO_CHECK_TYPE) {
1096 /* give people a warning shot, now that CDO_CHECK_TYPE
1097 is the default case! */
1098 cdinfo(CD_OPEN, "bummer. wrong media type.\n");
1099 cdinfo(CD_WARNING, "pid %d must open device O_NONBLOCK!\n",
1100 (unsigned int)current->pid);
1102 goto clean_up_and_return;
1105 cdinfo(CD_OPEN, "wrong media type, but CDO_CHECK_TYPE not set.\n");
1109 cdinfo(CD_OPEN, "all seems well, opening the device.\n");
1111 /* all seems well, we can open the device */
1112 ret = cdo->open(cdi, 0); /* open for data */
1113 cdinfo(CD_OPEN, "opening the device gave me %d.\n", ret);
1114 /* After all this careful checking, we shouldn't have problems
1115 opening the device, but we don't want the device locked if
1116 this somehow fails... */
1118 cdinfo(CD_OPEN, "open device failed.\n");
1119 goto clean_up_and_return;
1121 if (CDROM_CAN(CDC_LOCK) && (cdi->options & CDO_LOCK)) {
1122 cdo->lock_door(cdi, 1);
1123 cdinfo(CD_OPEN, "door locked.\n");
1125 cdinfo(CD_OPEN, "device opened successfully.\n");
1128 /* Something failed. Try to unlock the drive, because some drivers
1129 (notably ide-cd) lock the drive after every command. This produced
1130 a nasty bug where after mount failed, the drive would remain locked!
1131 This ensures that the drive gets unlocked after a mount fails. This
1132 is a goto to avoid bloating the driver with redundant code. */
1133 clean_up_and_return:
1134 /* Don't log this, its a perfectly normal user occurence */
1135 /* cdinfo(CD_WARNING, "open failed.\n"); */
1136 if (CDROM_CAN(CDC_LOCK) && cdi->options & CDO_LOCK) {
1137 cdo->lock_door(cdi, 0);
1138 cdinfo(CD_OPEN, "door unlocked.\n");
1143 /* This code is similar to that in open_for_data. The routine is called
1144 whenever an audio play operation is requested.
1146 int check_for_audio_disc(struct cdrom_device_info * cdi,
1147 struct cdrom_device_ops * cdo)
1151 cdinfo(CD_OPEN, "entering check_for_audio_disc\n");
1152 if (!(cdi->options & CDO_CHECK_TYPE))
1154 if (cdo->drive_status != NULL) {
1155 ret = cdo->drive_status(cdi, CDSL_CURRENT);
1156 cdinfo(CD_OPEN, "drive_status=%d\n", ret);
1157 if (ret == CDS_TRAY_OPEN) {
1158 cdinfo(CD_OPEN, "the tray is open...\n");
1159 /* can/may i close it? */
1160 if (CDROM_CAN(CDC_CLOSE_TRAY) &&
1161 cdi->options & CDO_AUTO_CLOSE) {
1162 cdinfo(CD_OPEN, "trying to close the tray.\n");
1163 ret=cdo->tray_move(cdi,0);
1165 cdinfo(CD_OPEN, "bummer. tried to close tray but failed.\n");
1166 /* Ignore the error from the low
1167 level driver. We don't care why it
1168 couldn't close the tray. We only care
1169 that there is no disc in the drive,
1170 since that is the _REAL_ problem here.*/
1174 cdinfo(CD_OPEN, "bummer. this driver can't close the tray.\n");
1177 /* Ok, the door should be closed now.. Check again */
1178 ret = cdo->drive_status(cdi, CDSL_CURRENT);
1179 if ((ret == CDS_NO_DISC) || (ret==CDS_TRAY_OPEN)) {
1180 cdinfo(CD_OPEN, "bummer. the tray is still not closed.\n");
1183 if (ret!=CDS_DISC_OK) {
1184 cdinfo(CD_OPEN, "bummer. disc isn't ready.\n");
1187 cdinfo(CD_OPEN, "the tray is now closed.\n");
1190 cdrom_count_tracks(cdi, &tracks);
1192 return(tracks.error);
1194 if (tracks.audio==0)
1195 return -EMEDIUMTYPE;
1200 /* Admittedly, the logic below could be performed in a nicer way. */
1201 int cdrom_release(struct cdrom_device_info *cdi, struct file *fp)
1203 struct cdrom_device_ops *cdo = cdi->ops;
1204 int opened_for_data;
1206 cdinfo(CD_CLOSE, "entering cdrom_release\n");
1208 if (cdi->use_count > 0)
1210 if (cdi->use_count == 0)
1211 cdinfo(CD_CLOSE, "Use count for \"/dev/%s\" now zero\n", cdi->name);
1212 if (cdi->use_count == 0)
1213 cdrom_dvd_rw_close_write(cdi);
1214 if (cdi->use_count == 0 &&
1215 (cdo->capability & CDC_LOCK) && !keeplocked) {
1216 cdinfo(CD_CLOSE, "Unlocking door!\n");
1217 cdo->lock_door(cdi, 0);
1219 opened_for_data = !(cdi->options & CDO_USE_FFLAGS) ||
1220 !(fp && fp->f_flags & O_NONBLOCK);
1223 * flush cache on last write release
1225 if (CDROM_CAN(CDC_RAM) && !cdi->use_count && cdi->for_data)
1226 cdrom_close_write(cdi);
1229 if (cdi->use_count == 0) { /* last process that closes dev*/
1230 if (opened_for_data &&
1231 cdi->options & CDO_AUTO_EJECT && CDROM_CAN(CDC_OPEN_TRAY))
1232 cdo->tray_move(cdi, 1);
1237 static int cdrom_read_mech_status(struct cdrom_device_info *cdi,
1238 struct cdrom_changer_info *buf)
1240 struct packet_command cgc;
1241 struct cdrom_device_ops *cdo = cdi->ops;
1245 * Sanyo changer isn't spec compliant (doesn't use regular change
1246 * LOAD_UNLOAD command, and it doesn't implement the mech status
1249 if (cdi->sanyo_slot) {
1250 buf->hdr.nslots = 3;
1251 buf->hdr.curslot = cdi->sanyo_slot == 3 ? 0 : cdi->sanyo_slot;
1252 for (length = 0; length < 3; length++) {
1253 buf->slots[length].disc_present = 1;
1254 buf->slots[length].change = 0;
1259 length = sizeof(struct cdrom_mechstat_header) +
1260 cdi->capacity * sizeof(struct cdrom_slot);
1262 init_cdrom_command(&cgc, buf, length, CGC_DATA_READ);
1263 cgc.cmd[0] = GPCMD_MECHANISM_STATUS;
1264 cgc.cmd[8] = (length >> 8) & 0xff;
1265 cgc.cmd[9] = length & 0xff;
1266 return cdo->generic_packet(cdi, &cgc);
1269 static int cdrom_slot_status(struct cdrom_device_info *cdi, int slot)
1271 struct cdrom_changer_info *info;
1274 cdinfo(CD_CHANGER, "entering cdrom_slot_status()\n");
1275 if (cdi->sanyo_slot)
1278 info = kmalloc(sizeof(*info), GFP_KERNEL);
1282 if ((ret = cdrom_read_mech_status(cdi, info)))
1285 if (info->slots[slot].disc_present)
1295 /* Return the number of slots for an ATAPI/SCSI cdrom,
1296 * return 1 if not a changer.
1298 int cdrom_number_of_slots(struct cdrom_device_info *cdi)
1302 struct cdrom_changer_info *info;
1304 cdinfo(CD_CHANGER, "entering cdrom_number_of_slots()\n");
1305 /* cdrom_read_mech_status requires a valid value for capacity: */
1308 info = kmalloc(sizeof(*info), GFP_KERNEL);
1312 if ((status = cdrom_read_mech_status(cdi, info)) == 0)
1313 nslots = info->hdr.nslots;
1320 /* If SLOT < 0, unload the current slot. Otherwise, try to load SLOT. */
1321 static int cdrom_load_unload(struct cdrom_device_info *cdi, int slot)
1323 struct packet_command cgc;
1325 cdinfo(CD_CHANGER, "entering cdrom_load_unload()\n");
1326 if (cdi->sanyo_slot && slot < 0)
1329 init_cdrom_command(&cgc, NULL, 0, CGC_DATA_NONE);
1330 cgc.cmd[0] = GPCMD_LOAD_UNLOAD;
1331 cgc.cmd[4] = 2 + (slot >= 0);
1333 cgc.timeout = 60 * HZ;
1335 /* The Sanyo 3 CD changer uses byte 7 of the
1336 GPCMD_TEST_UNIT_READY to command to switch CDs instead of
1337 using the GPCMD_LOAD_UNLOAD opcode. */
1338 if (cdi->sanyo_slot && -1 < slot) {
1339 cgc.cmd[0] = GPCMD_TEST_UNIT_READY;
1341 cgc.cmd[4] = cgc.cmd[8] = 0;
1342 cdi->sanyo_slot = slot ? slot : 3;
1345 return cdi->ops->generic_packet(cdi, &cgc);
1348 static int cdrom_select_disc(struct cdrom_device_info *cdi, int slot)
1350 struct cdrom_changer_info *info;
1354 cdinfo(CD_CHANGER, "entering cdrom_select_disc()\n");
1355 if (!CDROM_CAN(CDC_SELECT_DISC))
1356 return -EDRIVE_CANT_DO_THIS;
1358 (void) cdi->ops->media_changed(cdi, slot);
1360 if (slot == CDSL_NONE) {
1361 /* set media changed bits, on both queues */
1362 cdi->mc_flags = 0x3;
1363 return cdrom_load_unload(cdi, -1);
1366 info = kmalloc(sizeof(*info), GFP_KERNEL);
1370 if ((ret = cdrom_read_mech_status(cdi, info))) {
1375 curslot = info->hdr.curslot;
1378 if (cdi->use_count > 1 || keeplocked) {
1379 if (slot == CDSL_CURRENT) {
1386 /* Specifying CDSL_CURRENT will attempt to load the currnet slot,
1387 which is useful if it had been previously unloaded.
1388 Whether it can or not, it returns the current slot.
1389 Similarly, if slot happens to be the current one, we still
1391 if (slot == CDSL_CURRENT)
1394 /* set media changed bits on both queues */
1395 cdi->mc_flags = 0x3;
1396 if ((ret = cdrom_load_unload(cdi, slot)))
1402 /* We want to make media_changed accessible to the user through an
1403 * ioctl. The main problem now is that we must double-buffer the
1404 * low-level implementation, to assure that the VFS and the user both
1405 * see a medium change once.
1409 int media_changed(struct cdrom_device_info *cdi, int queue)
1411 unsigned int mask = (1 << (queue & 1));
1412 int ret = !!(cdi->mc_flags & mask);
1414 if (!CDROM_CAN(CDC_MEDIA_CHANGED))
1416 /* changed since last call? */
1417 if (cdi->ops->media_changed(cdi, CDSL_CURRENT)) {
1418 cdi->mc_flags = 0x3; /* set bit on both queues */
1420 cdi->media_written = 0;
1422 cdi->mc_flags &= ~mask; /* clear bit */
1426 int cdrom_media_changed(struct cdrom_device_info *cdi)
1428 /* This talks to the VFS, which doesn't like errors - just 1 or 0.
1429 * Returning "0" is always safe (media hasn't been changed). Do that
1430 * if the low-level cdrom driver dosn't support media changed. */
1431 if (cdi == NULL || cdi->ops->media_changed == NULL)
1433 if (!CDROM_CAN(CDC_MEDIA_CHANGED))
1435 return media_changed(cdi, 0);
1438 /* badly broken, I know. Is due for a fixup anytime. */
1439 static void cdrom_count_tracks(struct cdrom_device_info *cdi, tracktype* tracks)
1441 struct cdrom_tochdr header;
1442 struct cdrom_tocentry entry;
1449 cdinfo(CD_COUNT_TRACKS, "entering cdrom_count_tracks\n");
1450 if (!CDROM_CAN(CDC_PLAY_AUDIO)) {
1451 tracks->error=CDS_NO_INFO;
1454 /* Grab the TOC header so we can see how many tracks there are */
1455 if ((ret = cdi->ops->audio_ioctl(cdi, CDROMREADTOCHDR, &header))) {
1456 if (ret == -ENOMEDIUM)
1457 tracks->error = CDS_NO_DISC;
1459 tracks->error = CDS_NO_INFO;
1462 /* check what type of tracks are on this disc */
1463 entry.cdte_format = CDROM_MSF;
1464 for (i = header.cdth_trk0; i <= header.cdth_trk1; i++) {
1465 entry.cdte_track = i;
1466 if (cdi->ops->audio_ioctl(cdi, CDROMREADTOCENTRY, &entry)) {
1467 tracks->error=CDS_NO_INFO;
1470 if (entry.cdte_ctrl & CDROM_DATA_TRACK) {
1471 if (entry.cdte_format == 0x10)
1473 else if (entry.cdte_format == 0x20)
1479 cdinfo(CD_COUNT_TRACKS, "track %d: format=%d, ctrl=%d\n",
1480 i, entry.cdte_format, entry.cdte_ctrl);
1482 cdinfo(CD_COUNT_TRACKS, "disc has %d tracks: %d=audio %d=data %d=Cd-I %d=XA\n",
1483 header.cdth_trk1, tracks->audio, tracks->data,
1484 tracks->cdi, tracks->xa);
1487 /* Requests to the low-level drivers will /always/ be done in the
1488 following format convention:
1490 CDROM_LBA: all data-related requests.
1491 CDROM_MSF: all audio-related requests.
1493 However, a low-level implementation is allowed to refuse this
1494 request, and return information in its own favorite format.
1496 It doesn't make sense /at all/ to ask for a play_audio in LBA
1497 format, or ask for multi-session info in MSF format. However, for
1498 backward compatibility these format requests will be satisfied, but
1499 the requests to the low-level drivers will be sanitized in the more
1500 meaningful format indicated above.
1504 void sanitize_format(union cdrom_addr *addr,
1505 u_char * curr, u_char requested)
1507 if (*curr == requested)
1508 return; /* nothing to be done! */
1509 if (requested == CDROM_LBA) {
1510 addr->lba = (int) addr->msf.frame +
1511 75 * (addr->msf.second - 2 + 60 * addr->msf.minute);
1512 } else { /* CDROM_MSF */
1513 int lba = addr->lba;
1514 addr->msf.frame = lba % 75;
1517 addr->msf.second = lba % 60;
1518 addr->msf.minute = lba / 60;
1523 void init_cdrom_command(struct packet_command *cgc, void *buf, int len,
1526 memset(cgc, 0, sizeof(struct packet_command));
1528 memset(buf, 0, len);
1529 cgc->buffer = (char *) buf;
1531 cgc->data_direction = type;
1532 cgc->timeout = 5*HZ;
1537 #define copy_key(dest,src) memcpy((dest), (src), sizeof(dvd_key))
1538 #define copy_chal(dest,src) memcpy((dest), (src), sizeof(dvd_challenge))
1540 static void setup_report_key(struct packet_command *cgc, unsigned agid, unsigned type)
1542 cgc->cmd[0] = GPCMD_REPORT_KEY;
1543 cgc->cmd[10] = type | (agid << 6);
1545 case 0: case 8: case 5: {
1558 cgc->cmd[9] = cgc->buflen;
1559 cgc->data_direction = CGC_DATA_READ;
1562 static void setup_send_key(struct packet_command *cgc, unsigned agid, unsigned type)
1564 cgc->cmd[0] = GPCMD_SEND_KEY;
1565 cgc->cmd[10] = type | (agid << 6);
1580 cgc->cmd[9] = cgc->buflen;
1581 cgc->data_direction = CGC_DATA_WRITE;
1584 static int dvd_do_auth(struct cdrom_device_info *cdi, dvd_authinfo *ai)
1588 struct packet_command cgc;
1589 struct cdrom_device_ops *cdo = cdi->ops;
1590 rpc_state_t rpc_state;
1592 memset(buf, 0, sizeof(buf));
1593 init_cdrom_command(&cgc, buf, 0, CGC_DATA_READ);
1597 case DVD_LU_SEND_AGID:
1598 cdinfo(CD_DVD, "entering DVD_LU_SEND_AGID\n");
1600 setup_report_key(&cgc, ai->lsa.agid, 0);
1602 if ((ret = cdo->generic_packet(cdi, &cgc)))
1605 ai->lsa.agid = buf[7] >> 6;
1606 /* Returning data, let host change state */
1609 case DVD_LU_SEND_KEY1:
1610 cdinfo(CD_DVD, "entering DVD_LU_SEND_KEY1\n");
1611 setup_report_key(&cgc, ai->lsk.agid, 2);
1613 if ((ret = cdo->generic_packet(cdi, &cgc)))
1616 copy_key(ai->lsk.key, &buf[4]);
1617 /* Returning data, let host change state */
1620 case DVD_LU_SEND_CHALLENGE:
1621 cdinfo(CD_DVD, "entering DVD_LU_SEND_CHALLENGE\n");
1622 setup_report_key(&cgc, ai->lsc.agid, 1);
1624 if ((ret = cdo->generic_packet(cdi, &cgc)))
1627 copy_chal(ai->lsc.chal, &buf[4]);
1628 /* Returning data, let host change state */
1632 case DVD_LU_SEND_TITLE_KEY:
1633 cdinfo(CD_DVD, "entering DVD_LU_SEND_TITLE_KEY\n");
1635 setup_report_key(&cgc, ai->lstk.agid, 4);
1636 cgc.cmd[5] = ai->lstk.lba;
1637 cgc.cmd[4] = ai->lstk.lba >> 8;
1638 cgc.cmd[3] = ai->lstk.lba >> 16;
1639 cgc.cmd[2] = ai->lstk.lba >> 24;
1641 if ((ret = cdo->generic_packet(cdi, &cgc)))
1644 ai->lstk.cpm = (buf[4] >> 7) & 1;
1645 ai->lstk.cp_sec = (buf[4] >> 6) & 1;
1646 ai->lstk.cgms = (buf[4] >> 4) & 3;
1647 copy_key(ai->lstk.title_key, &buf[5]);
1648 /* Returning data, let host change state */
1651 case DVD_LU_SEND_ASF:
1652 cdinfo(CD_DVD, "entering DVD_LU_SEND_ASF\n");
1653 setup_report_key(&cgc, ai->lsasf.agid, 5);
1655 if ((ret = cdo->generic_packet(cdi, &cgc)))
1658 ai->lsasf.asf = buf[7] & 1;
1661 /* LU data receive (LU changes state) */
1662 case DVD_HOST_SEND_CHALLENGE:
1663 cdinfo(CD_DVD, "entering DVD_HOST_SEND_CHALLENGE\n");
1664 setup_send_key(&cgc, ai->hsc.agid, 1);
1666 copy_chal(&buf[4], ai->hsc.chal);
1668 if ((ret = cdo->generic_packet(cdi, &cgc)))
1671 ai->type = DVD_LU_SEND_KEY1;
1674 case DVD_HOST_SEND_KEY2:
1675 cdinfo(CD_DVD, "entering DVD_HOST_SEND_KEY2\n");
1676 setup_send_key(&cgc, ai->hsk.agid, 3);
1678 copy_key(&buf[4], ai->hsk.key);
1680 if ((ret = cdo->generic_packet(cdi, &cgc))) {
1681 ai->type = DVD_AUTH_FAILURE;
1684 ai->type = DVD_AUTH_ESTABLISHED;
1688 case DVD_INVALIDATE_AGID:
1690 cdinfo(CD_DVD, "entering DVD_INVALIDATE_AGID\n");
1691 setup_report_key(&cgc, ai->lsa.agid, 0x3f);
1692 if ((ret = cdo->generic_packet(cdi, &cgc)))
1696 /* Get region settings */
1697 case DVD_LU_SEND_RPC_STATE:
1698 cdinfo(CD_DVD, "entering DVD_LU_SEND_RPC_STATE\n");
1699 setup_report_key(&cgc, 0, 8);
1700 memset(&rpc_state, 0, sizeof(rpc_state_t));
1701 cgc.buffer = (char *) &rpc_state;
1703 if ((ret = cdo->generic_packet(cdi, &cgc)))
1706 ai->lrpcs.type = rpc_state.type_code;
1707 ai->lrpcs.vra = rpc_state.vra;
1708 ai->lrpcs.ucca = rpc_state.ucca;
1709 ai->lrpcs.region_mask = rpc_state.region_mask;
1710 ai->lrpcs.rpc_scheme = rpc_state.rpc_scheme;
1713 /* Set region settings */
1714 case DVD_HOST_SEND_RPC_STATE:
1715 cdinfo(CD_DVD, "entering DVD_HOST_SEND_RPC_STATE\n");
1716 setup_send_key(&cgc, 0, 6);
1718 buf[4] = ai->hrpcs.pdrc;
1720 if ((ret = cdo->generic_packet(cdi, &cgc)))
1725 cdinfo(CD_WARNING, "Invalid DVD key ioctl (%d)\n", ai->type);
1732 static int dvd_read_physical(struct cdrom_device_info *cdi, dvd_struct *s)
1734 unsigned char buf[21], *base;
1735 struct dvd_layer *layer;
1736 struct packet_command cgc;
1737 struct cdrom_device_ops *cdo = cdi->ops;
1738 int ret, layer_num = s->physical.layer_num;
1740 if (layer_num >= DVD_LAYERS)
1743 init_cdrom_command(&cgc, buf, sizeof(buf), CGC_DATA_READ);
1744 cgc.cmd[0] = GPCMD_READ_DVD_STRUCTURE;
1745 cgc.cmd[6] = layer_num;
1746 cgc.cmd[7] = s->type;
1747 cgc.cmd[9] = cgc.buflen & 0xff;
1750 * refrain from reporting errors on non-existing layers (mainly)
1754 if ((ret = cdo->generic_packet(cdi, &cgc)))
1758 layer = &s->physical.layer[layer_num];
1761 * place the data... really ugly, but at least we won't have to
1762 * worry about endianess in userspace.
1764 memset(layer, 0, sizeof(*layer));
1765 layer->book_version = base[0] & 0xf;
1766 layer->book_type = base[0] >> 4;
1767 layer->min_rate = base[1] & 0xf;
1768 layer->disc_size = base[1] >> 4;
1769 layer->layer_type = base[2] & 0xf;
1770 layer->track_path = (base[2] >> 4) & 1;
1771 layer->nlayers = (base[2] >> 5) & 3;
1772 layer->track_density = base[3] & 0xf;
1773 layer->linear_density = base[3] >> 4;
1774 layer->start_sector = base[5] << 16 | base[6] << 8 | base[7];
1775 layer->end_sector = base[9] << 16 | base[10] << 8 | base[11];
1776 layer->end_sector_l0 = base[13] << 16 | base[14] << 8 | base[15];
1777 layer->bca = base[16] >> 7;
1782 static int dvd_read_copyright(struct cdrom_device_info *cdi, dvd_struct *s)
1786 struct packet_command cgc;
1787 struct cdrom_device_ops *cdo = cdi->ops;
1789 init_cdrom_command(&cgc, buf, sizeof(buf), CGC_DATA_READ);
1790 cgc.cmd[0] = GPCMD_READ_DVD_STRUCTURE;
1791 cgc.cmd[6] = s->copyright.layer_num;
1792 cgc.cmd[7] = s->type;
1793 cgc.cmd[8] = cgc.buflen >> 8;
1794 cgc.cmd[9] = cgc.buflen & 0xff;
1796 if ((ret = cdo->generic_packet(cdi, &cgc)))
1799 s->copyright.cpst = buf[4];
1800 s->copyright.rmi = buf[5];
1805 static int dvd_read_disckey(struct cdrom_device_info *cdi, dvd_struct *s)
1809 struct packet_command cgc;
1810 struct cdrom_device_ops *cdo = cdi->ops;
1812 size = sizeof(s->disckey.value) + 4;
1814 if ((buf = (u_char *) kmalloc(size, GFP_KERNEL)) == NULL)
1817 init_cdrom_command(&cgc, buf, size, CGC_DATA_READ);
1818 cgc.cmd[0] = GPCMD_READ_DVD_STRUCTURE;
1819 cgc.cmd[7] = s->type;
1820 cgc.cmd[8] = size >> 8;
1821 cgc.cmd[9] = size & 0xff;
1822 cgc.cmd[10] = s->disckey.agid << 6;
1824 if (!(ret = cdo->generic_packet(cdi, &cgc)))
1825 memcpy(s->disckey.value, &buf[4], sizeof(s->disckey.value));
1831 static int dvd_read_bca(struct cdrom_device_info *cdi, dvd_struct *s)
1834 u_char buf[4 + 188];
1835 struct packet_command cgc;
1836 struct cdrom_device_ops *cdo = cdi->ops;
1838 init_cdrom_command(&cgc, buf, sizeof(buf), CGC_DATA_READ);
1839 cgc.cmd[0] = GPCMD_READ_DVD_STRUCTURE;
1840 cgc.cmd[7] = s->type;
1841 cgc.cmd[9] = cgc.buflen = 0xff;
1843 if ((ret = cdo->generic_packet(cdi, &cgc)))
1846 s->bca.len = buf[0] << 8 | buf[1];
1847 if (s->bca.len < 12 || s->bca.len > 188) {
1848 cdinfo(CD_WARNING, "Received invalid BCA length (%d)\n", s->bca.len);
1851 memcpy(s->bca.value, &buf[4], s->bca.len);
1856 static int dvd_read_manufact(struct cdrom_device_info *cdi, dvd_struct *s)
1860 struct packet_command cgc;
1861 struct cdrom_device_ops *cdo = cdi->ops;
1863 size = sizeof(s->manufact.value) + 4;
1865 if ((buf = (u_char *) kmalloc(size, GFP_KERNEL)) == NULL)
1868 init_cdrom_command(&cgc, buf, size, CGC_DATA_READ);
1869 cgc.cmd[0] = GPCMD_READ_DVD_STRUCTURE;
1870 cgc.cmd[7] = s->type;
1871 cgc.cmd[8] = size >> 8;
1872 cgc.cmd[9] = size & 0xff;
1874 if ((ret = cdo->generic_packet(cdi, &cgc))) {
1879 s->manufact.len = buf[0] << 8 | buf[1];
1880 if (s->manufact.len < 0 || s->manufact.len > 2048) {
1881 cdinfo(CD_WARNING, "Received invalid manufacture info length"
1882 " (%d)\n", s->manufact.len);
1885 memcpy(s->manufact.value, &buf[4], s->manufact.len);
1892 static int dvd_read_struct(struct cdrom_device_info *cdi, dvd_struct *s)
1895 case DVD_STRUCT_PHYSICAL:
1896 return dvd_read_physical(cdi, s);
1898 case DVD_STRUCT_COPYRIGHT:
1899 return dvd_read_copyright(cdi, s);
1901 case DVD_STRUCT_DISCKEY:
1902 return dvd_read_disckey(cdi, s);
1904 case DVD_STRUCT_BCA:
1905 return dvd_read_bca(cdi, s);
1907 case DVD_STRUCT_MANUFACT:
1908 return dvd_read_manufact(cdi, s);
1911 cdinfo(CD_WARNING, ": Invalid DVD structure read requested (%d)\n",
1917 int cdrom_mode_sense(struct cdrom_device_info *cdi,
1918 struct packet_command *cgc,
1919 int page_code, int page_control)
1921 struct cdrom_device_ops *cdo = cdi->ops;
1923 memset(cgc->cmd, 0, sizeof(cgc->cmd));
1925 cgc->cmd[0] = GPCMD_MODE_SENSE_10;
1926 cgc->cmd[2] = page_code | (page_control << 6);
1927 cgc->cmd[7] = cgc->buflen >> 8;
1928 cgc->cmd[8] = cgc->buflen & 0xff;
1929 cgc->data_direction = CGC_DATA_READ;
1930 return cdo->generic_packet(cdi, cgc);
1933 int cdrom_mode_select(struct cdrom_device_info *cdi,
1934 struct packet_command *cgc)
1936 struct cdrom_device_ops *cdo = cdi->ops;
1938 memset(cgc->cmd, 0, sizeof(cgc->cmd));
1939 memset(cgc->buffer, 0, 2);
1940 cgc->cmd[0] = GPCMD_MODE_SELECT_10;
1941 cgc->cmd[1] = 0x10; /* PF */
1942 cgc->cmd[7] = cgc->buflen >> 8;
1943 cgc->cmd[8] = cgc->buflen & 0xff;
1944 cgc->data_direction = CGC_DATA_WRITE;
1945 return cdo->generic_packet(cdi, cgc);
1948 static int cdrom_read_subchannel(struct cdrom_device_info *cdi,
1949 struct cdrom_subchnl *subchnl, int mcn)
1951 struct cdrom_device_ops *cdo = cdi->ops;
1952 struct packet_command cgc;
1956 init_cdrom_command(&cgc, buffer, 16, CGC_DATA_READ);
1957 cgc.cmd[0] = GPCMD_READ_SUBCHANNEL;
1958 cgc.cmd[1] = 2; /* MSF addressing */
1959 cgc.cmd[2] = 0x40; /* request subQ data */
1960 cgc.cmd[3] = mcn ? 2 : 1;
1963 if ((ret = cdo->generic_packet(cdi, &cgc)))
1966 subchnl->cdsc_audiostatus = cgc.buffer[1];
1967 subchnl->cdsc_format = CDROM_MSF;
1968 subchnl->cdsc_ctrl = cgc.buffer[5] & 0xf;
1969 subchnl->cdsc_trk = cgc.buffer[6];
1970 subchnl->cdsc_ind = cgc.buffer[7];
1972 subchnl->cdsc_reladdr.msf.minute = cgc.buffer[13];
1973 subchnl->cdsc_reladdr.msf.second = cgc.buffer[14];
1974 subchnl->cdsc_reladdr.msf.frame = cgc.buffer[15];
1975 subchnl->cdsc_absaddr.msf.minute = cgc.buffer[9];
1976 subchnl->cdsc_absaddr.msf.second = cgc.buffer[10];
1977 subchnl->cdsc_absaddr.msf.frame = cgc.buffer[11];
1983 * Specific READ_10 interface
1985 static int cdrom_read_cd(struct cdrom_device_info *cdi,
1986 struct packet_command *cgc, int lba,
1987 int blocksize, int nblocks)
1989 struct cdrom_device_ops *cdo = cdi->ops;
1991 memset(&cgc->cmd, 0, sizeof(cgc->cmd));
1992 cgc->cmd[0] = GPCMD_READ_10;
1993 cgc->cmd[2] = (lba >> 24) & 0xff;
1994 cgc->cmd[3] = (lba >> 16) & 0xff;
1995 cgc->cmd[4] = (lba >> 8) & 0xff;
1996 cgc->cmd[5] = lba & 0xff;
1997 cgc->cmd[6] = (nblocks >> 16) & 0xff;
1998 cgc->cmd[7] = (nblocks >> 8) & 0xff;
1999 cgc->cmd[8] = nblocks & 0xff;
2000 cgc->buflen = blocksize * nblocks;
2001 return cdo->generic_packet(cdi, cgc);
2004 /* very generic interface for reading the various types of blocks */
2005 static int cdrom_read_block(struct cdrom_device_info *cdi,
2006 struct packet_command *cgc,
2007 int lba, int nblocks, int format, int blksize)
2009 struct cdrom_device_ops *cdo = cdi->ops;
2011 memset(&cgc->cmd, 0, sizeof(cgc->cmd));
2012 cgc->cmd[0] = GPCMD_READ_CD;
2013 /* expected sector size - cdda,mode1,etc. */
2014 cgc->cmd[1] = format << 2;
2015 /* starting address */
2016 cgc->cmd[2] = (lba >> 24) & 0xff;
2017 cgc->cmd[3] = (lba >> 16) & 0xff;
2018 cgc->cmd[4] = (lba >> 8) & 0xff;
2019 cgc->cmd[5] = lba & 0xff;
2020 /* number of blocks */
2021 cgc->cmd[6] = (nblocks >> 16) & 0xff;
2022 cgc->cmd[7] = (nblocks >> 8) & 0xff;
2023 cgc->cmd[8] = nblocks & 0xff;
2024 cgc->buflen = blksize * nblocks;
2026 /* set the header info returned */
2028 case CD_FRAMESIZE_RAW0 : cgc->cmd[9] = 0x58; break;
2029 case CD_FRAMESIZE_RAW1 : cgc->cmd[9] = 0x78; break;
2030 case CD_FRAMESIZE_RAW : cgc->cmd[9] = 0xf8; break;
2031 default : cgc->cmd[9] = 0x10;
2034 return cdo->generic_packet(cdi, cgc);
2037 static int cdrom_read_cdda_old(struct cdrom_device_info *cdi, __u8 __user *ubuf,
2038 int lba, int nframes)
2040 struct packet_command cgc;
2044 cdi->last_sense = 0;
2046 memset(&cgc, 0, sizeof(cgc));
2049 * start with will ra.nframes size, back down if alloc fails
2053 cgc.buffer = kmalloc(CD_FRAMESIZE_RAW * nr, GFP_KERNEL);
2063 if (!access_ok(VERIFY_WRITE, ubuf, nframes * CD_FRAMESIZE_RAW)) {
2068 cgc.data_direction = CGC_DATA_READ;
2069 while (nframes > 0) {
2073 ret = cdrom_read_block(cdi, &cgc, lba, nr, 1, CD_FRAMESIZE_RAW);
2076 if (__copy_to_user(ubuf, cgc.buffer, CD_FRAMESIZE_RAW * nr)) {
2080 ubuf += CD_FRAMESIZE_RAW * nr;
2089 static int cdrom_read_cdda_bpc(struct cdrom_device_info *cdi, __u8 __user *ubuf,
2090 int lba, int nframes)
2092 request_queue_t *q = cdi->disk->queue;
2101 cdi->last_sense = 0;
2105 if (cdi->cdda_method == CDDA_BPC_SINGLE)
2107 if (nr * CD_FRAMESIZE_RAW > (q->max_sectors << 9))
2108 nr = (q->max_sectors << 9) / CD_FRAMESIZE_RAW;
2110 len = nr * CD_FRAMESIZE_RAW;
2112 rq = blk_rq_map_user(q, READ, ubuf, len);
2116 memset(rq->cmd, 0, sizeof(rq->cmd));
2117 rq->cmd[0] = GPCMD_READ_CD;
2118 rq->cmd[1] = 1 << 2;
2119 rq->cmd[2] = (lba >> 24) & 0xff;
2120 rq->cmd[3] = (lba >> 16) & 0xff;
2121 rq->cmd[4] = (lba >> 8) & 0xff;
2122 rq->cmd[5] = lba & 0xff;
2123 rq->cmd[6] = (nr >> 16) & 0xff;
2124 rq->cmd[7] = (nr >> 8) & 0xff;
2125 rq->cmd[8] = nr & 0xff;
2129 rq->flags |= REQ_BLOCK_PC;
2130 rq->timeout = 60 * HZ;
2134 blk_queue_bounce(q, &rq->bio);
2136 if (blk_execute_rq(q, cdi->disk, rq)) {
2137 struct request_sense *s = rq->sense;
2139 cdi->last_sense = s->sense_key;
2142 if (blk_rq_unmap_user(rq, bio, len))
2156 static int cdrom_read_cdda(struct cdrom_device_info *cdi, __u8 __user *ubuf,
2157 int lba, int nframes)
2161 if (cdi->cdda_method == CDDA_OLD)
2162 return cdrom_read_cdda_old(cdi, ubuf, lba, nframes);
2166 * for anything else than success and io error, we need to retry
2168 ret = cdrom_read_cdda_bpc(cdi, ubuf, lba, nframes);
2169 if (!ret || ret != -EIO)
2173 * I've seen drives get sense 4/8/3 udma crc errors on multi
2174 * frame dma, so drop to single frame dma if we need to
2176 if (cdi->cdda_method == CDDA_BPC_FULL && nframes > 1) {
2177 printk("cdrom: dropping to single frame dma\n");
2178 cdi->cdda_method = CDDA_BPC_SINGLE;
2183 * so we have an io error of some sort with multi frame dma. if the
2184 * condition wasn't a hardware error
2185 * problems, not for any error
2187 if (cdi->last_sense != 0x04 && cdi->last_sense != 0x0b)
2190 printk("cdrom: dropping to old style cdda (sense=%x)\n", cdi->last_sense);
2191 cdi->cdda_method = CDDA_OLD;
2192 return cdrom_read_cdda_old(cdi, ubuf, lba, nframes);
2195 /* Just about every imaginable ioctl is supported in the Uniform layer
2196 * these days. ATAPI / SCSI specific code now mainly resides in
2199 int cdrom_ioctl(struct file * file, struct cdrom_device_info *cdi,
2200 struct inode *ip, unsigned int cmd, unsigned long arg)
2202 struct cdrom_device_ops *cdo = cdi->ops;
2205 /* Try the generic SCSI command ioctl's first.. */
2206 ret = scsi_cmd_ioctl(file, ip->i_bdev->bd_disk, cmd, (void __user *)arg);
2210 /* the first few commands do not deal with audio drive_info, but
2211 only with routines in cdrom device operations. */
2213 case CDROMMULTISESSION: {
2214 struct cdrom_multisession ms_info;
2215 u_char requested_format;
2216 cdinfo(CD_DO_IOCTL, "entering CDROMMULTISESSION\n");
2217 if (!(cdo->capability & CDC_MULTI_SESSION))
2219 IOCTL_IN(arg, struct cdrom_multisession, ms_info);
2220 requested_format = ms_info.addr_format;
2221 if (!((requested_format == CDROM_MSF) ||
2222 (requested_format == CDROM_LBA)))
2224 ms_info.addr_format = CDROM_LBA;
2225 if ((ret=cdo->get_last_session(cdi, &ms_info)))
2227 sanitize_format(&ms_info.addr, &ms_info.addr_format,
2229 IOCTL_OUT(arg, struct cdrom_multisession, ms_info);
2230 cdinfo(CD_DO_IOCTL, "CDROMMULTISESSION successful\n");
2235 cdinfo(CD_DO_IOCTL, "entering CDROMEJECT\n");
2236 if (!CDROM_CAN(CDC_OPEN_TRAY))
2238 if (cdi->use_count != 1 || keeplocked)
2240 if (CDROM_CAN(CDC_LOCK))
2241 if ((ret=cdo->lock_door(cdi, 0)))
2244 return cdo->tray_move(cdi, 1);
2247 case CDROMCLOSETRAY: {
2248 cdinfo(CD_DO_IOCTL, "entering CDROMCLOSETRAY\n");
2249 if (!CDROM_CAN(CDC_CLOSE_TRAY))
2251 return cdo->tray_move(cdi, 0);
2254 case CDROMEJECT_SW: {
2255 cdinfo(CD_DO_IOCTL, "entering CDROMEJECT_SW\n");
2256 if (!CDROM_CAN(CDC_OPEN_TRAY))
2260 cdi->options &= ~(CDO_AUTO_CLOSE | CDO_AUTO_EJECT);
2262 cdi->options |= CDO_AUTO_CLOSE | CDO_AUTO_EJECT;
2266 case CDROM_MEDIA_CHANGED: {
2267 struct cdrom_changer_info *info;
2270 cdinfo(CD_DO_IOCTL, "entering CDROM_MEDIA_CHANGED\n");
2271 if (!CDROM_CAN(CDC_MEDIA_CHANGED))
2274 /* cannot select disc or select current disc */
2275 if (!CDROM_CAN(CDC_SELECT_DISC) || arg == CDSL_CURRENT)
2276 return media_changed(cdi, 1);
2278 if ((unsigned int)arg >= cdi->capacity)
2281 info = kmalloc(sizeof(*info), GFP_KERNEL);
2285 if ((ret = cdrom_read_mech_status(cdi, info))) {
2290 changed = info->slots[arg].change;
2295 case CDROM_SET_OPTIONS: {
2296 cdinfo(CD_DO_IOCTL, "entering CDROM_SET_OPTIONS\n");
2297 /* options need to be in sync with capability. too late for
2298 that, so we have to check each one separately... */
2300 case CDO_USE_FFLAGS:
2301 case CDO_CHECK_TYPE:
2304 if (!CDROM_CAN(CDC_LOCK))
2308 return cdi->options;
2309 /* default is basically CDO_[AUTO_CLOSE|AUTO_EJECT] */
2311 if (!CDROM_CAN(arg))
2314 cdi->options |= (int) arg;
2315 return cdi->options;
2318 case CDROM_CLEAR_OPTIONS: {
2319 cdinfo(CD_DO_IOCTL, "entering CDROM_CLEAR_OPTIONS\n");
2320 cdi->options &= ~(int) arg;
2321 return cdi->options;
2324 case CDROM_SELECT_SPEED: {
2325 cdinfo(CD_DO_IOCTL, "entering CDROM_SELECT_SPEED\n");
2326 if (!CDROM_CAN(CDC_SELECT_SPEED))
2328 return cdo->select_speed(cdi, arg);
2331 case CDROM_SELECT_DISC: {
2332 cdinfo(CD_DO_IOCTL, "entering CDROM_SELECT_DISC\n");
2333 if (!CDROM_CAN(CDC_SELECT_DISC))
2336 if ((arg != CDSL_CURRENT) && (arg != CDSL_NONE))
2337 if ((int)arg >= cdi->capacity)
2340 /* cdo->select_disc is a hook to allow a driver-specific
2341 * way of seleting disc. However, since there is no
2342 * equiv hook for cdrom_slot_status this may not
2343 * actually be useful...
2345 if (cdo->select_disc != NULL)
2346 return cdo->select_disc(cdi, arg);
2348 /* no driver specific select_disc(), call our own */
2349 cdinfo(CD_CHANGER, "Using generic cdrom_select_disc()\n");
2350 return cdrom_select_disc(cdi, arg);
2354 if (!capable(CAP_SYS_ADMIN))
2356 cdinfo(CD_DO_IOCTL, "entering CDROM_RESET\n");
2357 if (!CDROM_CAN(CDC_RESET))
2359 invalidate_bdev(ip->i_bdev, 0);
2360 return cdo->reset(cdi);
2363 case CDROM_LOCKDOOR: {
2364 cdinfo(CD_DO_IOCTL, "%socking door.\n", arg ? "L" : "Unl");
2365 if (!CDROM_CAN(CDC_LOCK))
2366 return -EDRIVE_CANT_DO_THIS;
2367 keeplocked = arg ? 1 : 0;
2368 /* don't unlock the door on multiple opens,but allow root
2370 if ((cdi->use_count != 1) && !arg && !capable(CAP_SYS_ADMIN))
2372 return cdo->lock_door(cdi, arg);
2376 if (!capable(CAP_SYS_ADMIN))
2378 cdinfo(CD_DO_IOCTL, "%sabling debug.\n", arg ? "En" : "Dis");
2379 debug = arg ? 1 : 0;
2383 case CDROM_GET_CAPABILITY: {
2384 cdinfo(CD_DO_IOCTL, "entering CDROM_GET_CAPABILITY\n");
2385 return (cdo->capability & ~cdi->mask);
2388 /* The following function is implemented, although very few audio
2389 * discs give Universal Product Code information, which should just be
2390 * the Medium Catalog Number on the box. Note, that the way the code
2391 * is written on the CD is /not/ uniform across all discs!
2393 case CDROM_GET_MCN: {
2394 struct cdrom_mcn mcn;
2395 cdinfo(CD_DO_IOCTL, "entering CDROM_GET_MCN\n");
2396 if (!(cdo->capability & CDC_MCN))
2398 if ((ret=cdo->get_mcn(cdi, &mcn)))
2400 IOCTL_OUT(arg, struct cdrom_mcn, mcn);
2401 cdinfo(CD_DO_IOCTL, "CDROM_GET_MCN successful\n");
2405 case CDROM_DRIVE_STATUS: {
2406 cdinfo(CD_DO_IOCTL, "entering CDROM_DRIVE_STATUS\n");
2407 if (!(cdo->capability & CDC_DRIVE_STATUS))
2409 if (!CDROM_CAN(CDC_SELECT_DISC))
2410 return cdo->drive_status(cdi, CDSL_CURRENT);
2411 if ((arg == CDSL_CURRENT) || (arg == CDSL_NONE))
2412 return cdo->drive_status(cdi, CDSL_CURRENT);
2413 if (((int)arg >= cdi->capacity))
2415 return cdrom_slot_status(cdi, arg);
2418 /* Ok, this is where problems start. The current interface for the
2419 CDROM_DISC_STATUS ioctl is flawed. It makes the false assumption
2420 that CDs are all CDS_DATA_1 or all CDS_AUDIO, etc. Unfortunatly,
2421 while this is often the case, it is also very common for CDs to
2422 have some tracks with data, and some tracks with audio. Just
2423 because I feel like it, I declare the following to be the best
2424 way to cope. If the CD has ANY data tracks on it, it will be
2425 returned as a data CD. If it has any XA tracks, I will return
2426 it as that. Now I could simplify this interface by combining these
2427 returns with the above, but this more clearly demonstrates
2428 the problem with the current interface. Too bad this wasn't
2429 designed to use bitmasks... -Erik
2431 Well, now we have the option CDS_MIXED: a mixed-type CD.
2432 User level programmers might feel the ioctl is not very useful.
2435 case CDROM_DISC_STATUS: {
2437 cdinfo(CD_DO_IOCTL, "entering CDROM_DISC_STATUS\n");
2438 cdrom_count_tracks(cdi, &tracks);
2440 return(tracks.error);
2442 /* Policy mode on */
2443 if (tracks.audio > 0) {
2444 if (tracks.data==0 && tracks.cdi==0 && tracks.xa==0)
2449 if (tracks.cdi > 0) return CDS_XA_2_2;
2450 if (tracks.xa > 0) return CDS_XA_2_1;
2451 if (tracks.data > 0) return CDS_DATA_1;
2452 /* Policy mode off */
2454 cdinfo(CD_WARNING,"This disc doesn't have any tracks I recognize!\n");
2458 case CDROM_CHANGER_NSLOTS: {
2459 cdinfo(CD_DO_IOCTL, "entering CDROM_CHANGER_NSLOTS\n");
2460 return cdi->capacity;
2464 /* use the ioctls that are implemented through the generic_packet()
2465 interface. this may look at bit funny, but if -ENOTTY is
2466 returned that particular ioctl is not implemented and we
2467 let it go through the device specific ones. */
2468 if (CDROM_CAN(CDC_GENERIC_PACKET)) {
2469 ret = mmc_ioctl(cdi, cmd, arg);
2470 if (ret != -ENOTTY) {
2475 /* note: most of the cdinfo() calls are commented out here,
2476 because they fill up the sys log when CD players poll
2479 case CDROMSUBCHNL: {
2480 struct cdrom_subchnl q;
2481 u_char requested, back;
2482 if (!CDROM_CAN(CDC_PLAY_AUDIO))
2484 /* cdinfo(CD_DO_IOCTL,"entering CDROMSUBCHNL\n");*/
2485 IOCTL_IN(arg, struct cdrom_subchnl, q);
2486 requested = q.cdsc_format;
2487 if (!((requested == CDROM_MSF) ||
2488 (requested == CDROM_LBA)))
2490 q.cdsc_format = CDROM_MSF;
2491 if ((ret=cdo->audio_ioctl(cdi, cmd, &q)))
2493 back = q.cdsc_format; /* local copy */
2494 sanitize_format(&q.cdsc_absaddr, &back, requested);
2495 sanitize_format(&q.cdsc_reladdr, &q.cdsc_format, requested);
2496 IOCTL_OUT(arg, struct cdrom_subchnl, q);
2497 /* cdinfo(CD_DO_IOCTL, "CDROMSUBCHNL successful\n"); */
2500 case CDROMREADTOCHDR: {
2501 struct cdrom_tochdr header;
2502 if (!CDROM_CAN(CDC_PLAY_AUDIO))
2504 /* cdinfo(CD_DO_IOCTL, "entering CDROMREADTOCHDR\n"); */
2505 IOCTL_IN(arg, struct cdrom_tochdr, header);
2506 if ((ret=cdo->audio_ioctl(cdi, cmd, &header)))
2508 IOCTL_OUT(arg, struct cdrom_tochdr, header);
2509 /* cdinfo(CD_DO_IOCTL, "CDROMREADTOCHDR successful\n"); */
2512 case CDROMREADTOCENTRY: {
2513 struct cdrom_tocentry entry;
2514 u_char requested_format;
2515 if (!CDROM_CAN(CDC_PLAY_AUDIO))
2517 /* cdinfo(CD_DO_IOCTL, "entering CDROMREADTOCENTRY\n"); */
2518 IOCTL_IN(arg, struct cdrom_tocentry, entry);
2519 requested_format = entry.cdte_format;
2520 if (!((requested_format == CDROM_MSF) ||
2521 (requested_format == CDROM_LBA)))
2523 /* make interface to low-level uniform */
2524 entry.cdte_format = CDROM_MSF;
2525 if ((ret=cdo->audio_ioctl(cdi, cmd, &entry)))
2527 sanitize_format(&entry.cdte_addr,
2528 &entry.cdte_format, requested_format);
2529 IOCTL_OUT(arg, struct cdrom_tocentry, entry);
2530 /* cdinfo(CD_DO_IOCTL, "CDROMREADTOCENTRY successful\n"); */
2533 case CDROMPLAYMSF: {
2534 struct cdrom_msf msf;
2535 if (!CDROM_CAN(CDC_PLAY_AUDIO))
2537 cdinfo(CD_DO_IOCTL, "entering CDROMPLAYMSF\n");
2538 IOCTL_IN(arg, struct cdrom_msf, msf);
2539 return cdo->audio_ioctl(cdi, cmd, &msf);
2541 case CDROMPLAYTRKIND: {
2543 if (!CDROM_CAN(CDC_PLAY_AUDIO))
2545 cdinfo(CD_DO_IOCTL, "entering CDROMPLAYTRKIND\n");
2546 IOCTL_IN(arg, struct cdrom_ti, ti);
2548 return cdo->audio_ioctl(cdi, cmd, &ti);
2550 case CDROMVOLCTRL: {
2551 struct cdrom_volctrl volume;
2552 if (!CDROM_CAN(CDC_PLAY_AUDIO))
2554 cdinfo(CD_DO_IOCTL, "entering CDROMVOLCTRL\n");
2555 IOCTL_IN(arg, struct cdrom_volctrl, volume);
2556 return cdo->audio_ioctl(cdi, cmd, &volume);
2558 case CDROMVOLREAD: {
2559 struct cdrom_volctrl volume;
2560 if (!CDROM_CAN(CDC_PLAY_AUDIO))
2562 cdinfo(CD_DO_IOCTL, "entering CDROMVOLREAD\n");
2563 if ((ret=cdo->audio_ioctl(cdi, cmd, &volume)))
2565 IOCTL_OUT(arg, struct cdrom_volctrl, volume);
2572 if (!CDROM_CAN(CDC_PLAY_AUDIO))
2574 cdinfo(CD_DO_IOCTL, "doing audio ioctl (start/stop/pause/resume)\n");
2576 return cdo->audio_ioctl(cdi, cmd, NULL);
2580 /* do the device specific ioctls */
2581 if (CDROM_CAN(CDC_IOCTLS))
2582 return cdo->dev_ioctl(cdi, cmd, arg);
2588 int msf_to_lba(char m, char s, char f)
2590 return (((m * CD_SECS) + s) * CD_FRAMES + f) - CD_MSF_OFFSET;
2594 * Required when we need to use READ_10 to issue other than 2048 block
2597 static int cdrom_switch_blocksize(struct cdrom_device_info *cdi, int size)
2599 struct cdrom_device_ops *cdo = cdi->ops;
2600 struct packet_command cgc;
2601 struct modesel_head mh;
2603 memset(&mh, 0, sizeof(mh));
2604 mh.block_desc_length = 0x08;
2605 mh.block_length_med = (size >> 8) & 0xff;
2606 mh.block_length_lo = size & 0xff;
2608 memset(&cgc, 0, sizeof(cgc));
2610 cgc.cmd[1] = 1 << 4;
2612 cgc.buflen = sizeof(mh);
2613 cgc.buffer = (char *) &mh;
2614 cgc.data_direction = CGC_DATA_WRITE;
2615 mh.block_desc_length = 0x08;
2616 mh.block_length_med = (size >> 8) & 0xff;
2617 mh.block_length_lo = size & 0xff;
2619 return cdo->generic_packet(cdi, &cgc);
2622 static int mmc_ioctl(struct cdrom_device_info *cdi, unsigned int cmd,
2625 struct cdrom_device_ops *cdo = cdi->ops;
2626 struct packet_command cgc;
2627 struct request_sense sense;
2628 unsigned char buffer[32];
2631 memset(&cgc, 0, sizeof(cgc));
2633 /* build a unified command and queue it through
2634 cdo->generic_packet() */
2637 case CDROMREADMODE1:
2638 case CDROMREADMODE2: {
2639 struct cdrom_msf msf;
2640 int blocksize = 0, format = 0, lba;
2644 blocksize = CD_FRAMESIZE_RAW;
2646 case CDROMREADMODE1:
2647 blocksize = CD_FRAMESIZE;
2650 case CDROMREADMODE2:
2651 blocksize = CD_FRAMESIZE_RAW0;
2654 IOCTL_IN(arg, struct cdrom_msf, msf);
2655 lba = msf_to_lba(msf.cdmsf_min0,msf.cdmsf_sec0,msf.cdmsf_frame0);
2656 /* FIXME: we need upper bound checking, too!! */
2659 cgc.buffer = (char *) kmalloc(blocksize, GFP_KERNEL);
2660 if (cgc.buffer == NULL)
2662 memset(&sense, 0, sizeof(sense));
2664 cgc.data_direction = CGC_DATA_READ;
2665 ret = cdrom_read_block(cdi, &cgc, lba, 1, format, blocksize);
2666 if (ret && sense.sense_key==0x05 && sense.asc==0x20 && sense.ascq==0x00) {
2668 * SCSI-II devices are not required to support
2669 * READ_CD, so let's try switching block size
2671 /* FIXME: switch back again... */
2672 if ((ret = cdrom_switch_blocksize(cdi, blocksize))) {
2677 ret = cdrom_read_cd(cdi, &cgc, lba, blocksize, 1);
2678 ret |= cdrom_switch_blocksize(cdi, blocksize);
2680 if (!ret && copy_to_user((char __user *)arg, cgc.buffer, blocksize))
2685 case CDROMREADAUDIO: {
2686 struct cdrom_read_audio ra;
2689 IOCTL_IN(arg, struct cdrom_read_audio, ra);
2691 if (ra.addr_format == CDROM_MSF)
2692 lba = msf_to_lba(ra.addr.msf.minute,
2695 else if (ra.addr_format == CDROM_LBA)
2700 /* FIXME: we need upper bound checking, too!! */
2701 if (lba < 0 || ra.nframes <= 0 || ra.nframes > CD_FRAMES)
2704 return cdrom_read_cdda(cdi, ra.buf, lba, ra.nframes);
2706 case CDROMSUBCHNL: {
2707 struct cdrom_subchnl q;
2708 u_char requested, back;
2709 IOCTL_IN(arg, struct cdrom_subchnl, q);
2710 requested = q.cdsc_format;
2711 if (!((requested == CDROM_MSF) ||
2712 (requested == CDROM_LBA)))
2714 q.cdsc_format = CDROM_MSF;
2715 if ((ret = cdrom_read_subchannel(cdi, &q, 0)))
2717 back = q.cdsc_format; /* local copy */
2718 sanitize_format(&q.cdsc_absaddr, &back, requested);
2719 sanitize_format(&q.cdsc_reladdr, &q.cdsc_format, requested);
2720 IOCTL_OUT(arg, struct cdrom_subchnl, q);
2721 /* cdinfo(CD_DO_IOCTL, "CDROMSUBCHNL successful\n"); */
2724 case CDROMPLAYMSF: {
2725 struct cdrom_msf msf;
2726 cdinfo(CD_DO_IOCTL, "entering CDROMPLAYMSF\n");
2727 IOCTL_IN(arg, struct cdrom_msf, msf);
2728 cgc.cmd[0] = GPCMD_PLAY_AUDIO_MSF;
2729 cgc.cmd[3] = msf.cdmsf_min0;
2730 cgc.cmd[4] = msf.cdmsf_sec0;
2731 cgc.cmd[5] = msf.cdmsf_frame0;
2732 cgc.cmd[6] = msf.cdmsf_min1;
2733 cgc.cmd[7] = msf.cdmsf_sec1;
2734 cgc.cmd[8] = msf.cdmsf_frame1;
2735 cgc.data_direction = CGC_DATA_NONE;
2736 return cdo->generic_packet(cdi, &cgc);
2738 case CDROMPLAYBLK: {
2739 struct cdrom_blk blk;
2740 cdinfo(CD_DO_IOCTL, "entering CDROMPLAYBLK\n");
2741 IOCTL_IN(arg, struct cdrom_blk, blk);
2742 cgc.cmd[0] = GPCMD_PLAY_AUDIO_10;
2743 cgc.cmd[2] = (blk.from >> 24) & 0xff;
2744 cgc.cmd[3] = (blk.from >> 16) & 0xff;
2745 cgc.cmd[4] = (blk.from >> 8) & 0xff;
2746 cgc.cmd[5] = blk.from & 0xff;
2747 cgc.cmd[7] = (blk.len >> 8) & 0xff;
2748 cgc.cmd[8] = blk.len & 0xff;
2749 cgc.data_direction = CGC_DATA_NONE;
2750 return cdo->generic_packet(cdi, &cgc);
2753 case CDROMVOLREAD: {
2754 struct cdrom_volctrl volctrl;
2755 char mask[sizeof(buffer)];
2756 unsigned short offset;
2758 cdinfo(CD_DO_IOCTL, "entering CDROMVOLUME\n");
2760 IOCTL_IN(arg, struct cdrom_volctrl, volctrl);
2762 cgc.buffer = buffer;
2764 if ((ret = cdrom_mode_sense(cdi, &cgc, GPMODE_AUDIO_CTL_PAGE, 0)))
2767 /* originally the code depended on buffer[1] to determine
2768 how much data is available for transfer. buffer[1] is
2769 unfortunately ambigious and the only reliable way seem
2770 to be to simply skip over the block descriptor... */
2771 offset = 8 + be16_to_cpu(*(unsigned short *)(buffer+6));
2773 if (offset + 16 > sizeof(buffer))
2776 if (offset + 16 > cgc.buflen) {
2777 cgc.buflen = offset+16;
2778 ret = cdrom_mode_sense(cdi, &cgc,
2779 GPMODE_AUDIO_CTL_PAGE, 0);
2785 if ((buffer[offset] & 0x3f) != GPMODE_AUDIO_CTL_PAGE ||
2786 buffer[offset+1] < 14)
2789 /* now we have the current volume settings. if it was only
2790 a CDROMVOLREAD, return these values */
2791 if (cmd == CDROMVOLREAD) {
2792 volctrl.channel0 = buffer[offset+9];
2793 volctrl.channel1 = buffer[offset+11];
2794 volctrl.channel2 = buffer[offset+13];
2795 volctrl.channel3 = buffer[offset+15];
2796 IOCTL_OUT(arg, struct cdrom_volctrl, volctrl);
2800 /* get the volume mask */
2802 if ((ret = cdrom_mode_sense(cdi, &cgc,
2803 GPMODE_AUDIO_CTL_PAGE, 1)))
2806 buffer[offset+9] = volctrl.channel0 & mask[offset+9];
2807 buffer[offset+11] = volctrl.channel1 & mask[offset+11];
2808 buffer[offset+13] = volctrl.channel2 & mask[offset+13];
2809 buffer[offset+15] = volctrl.channel3 & mask[offset+15];
2812 cgc.buffer = buffer + offset - 8;
2813 memset(cgc.buffer, 0, 8);
2814 return cdrom_mode_select(cdi, &cgc);
2819 cdinfo(CD_DO_IOCTL, "entering CDROMSTART/CDROMSTOP\n");
2820 cgc.cmd[0] = GPCMD_START_STOP_UNIT;
2822 cgc.cmd[4] = (cmd == CDROMSTART) ? 1 : 0;
2823 cgc.data_direction = CGC_DATA_NONE;
2824 return cdo->generic_packet(cdi, &cgc);
2829 cdinfo(CD_DO_IOCTL, "entering CDROMPAUSE/CDROMRESUME\n");
2830 cgc.cmd[0] = GPCMD_PAUSE_RESUME;
2831 cgc.cmd[8] = (cmd == CDROMRESUME) ? 1 : 0;
2832 cgc.data_direction = CGC_DATA_NONE;
2833 return cdo->generic_packet(cdi, &cgc);
2836 case DVD_READ_STRUCT: {
2838 int size = sizeof(dvd_struct);
2839 if (!CDROM_CAN(CDC_DVD))
2841 if ((s = (dvd_struct *) kmalloc(size, GFP_KERNEL)) == NULL)
2843 cdinfo(CD_DO_IOCTL, "entering DVD_READ_STRUCT\n");
2844 if (copy_from_user(s, (dvd_struct __user *)arg, size)) {
2848 if ((ret = dvd_read_struct(cdi, s))) {
2852 if (copy_to_user((dvd_struct __user *)arg, s, size))
2860 if (!CDROM_CAN(CDC_DVD))
2862 cdinfo(CD_DO_IOCTL, "entering DVD_AUTH\n");
2863 IOCTL_IN(arg, dvd_authinfo, ai);
2864 if ((ret = dvd_do_auth (cdi, &ai)))
2866 IOCTL_OUT(arg, dvd_authinfo, ai);
2870 case CDROM_NEXT_WRITABLE: {
2872 cdinfo(CD_DO_IOCTL, "entering CDROM_NEXT_WRITABLE\n");
2873 if ((ret = cdrom_get_next_writable(cdi, &next)))
2875 IOCTL_OUT(arg, long, next);
2878 case CDROM_LAST_WRITTEN: {
2880 cdinfo(CD_DO_IOCTL, "entering CDROM_LAST_WRITTEN\n");
2881 if ((ret = cdrom_get_last_written(cdi, &last)))
2883 IOCTL_OUT(arg, long, last);
2891 static int cdrom_get_track_info(struct cdrom_device_info *cdi, __u16 track, __u8 type,
2892 track_information *ti)
2894 struct cdrom_device_ops *cdo = cdi->ops;
2895 struct packet_command cgc;
2898 init_cdrom_command(&cgc, ti, 8, CGC_DATA_READ);
2899 cgc.cmd[0] = GPCMD_READ_TRACK_RZONE_INFO;
2900 cgc.cmd[1] = type & 3;
2901 cgc.cmd[4] = (track & 0xff00) >> 8;
2902 cgc.cmd[5] = track & 0xff;
2906 if ((ret = cdo->generic_packet(cdi, &cgc)))
2909 buflen = be16_to_cpu(ti->track_information_length) +
2910 sizeof(ti->track_information_length);
2912 if (buflen > sizeof(track_information))
2913 buflen = sizeof(track_information);
2915 cgc.cmd[8] = cgc.buflen = buflen;
2916 if ((ret = cdo->generic_packet(cdi, &cgc)))
2919 /* return actual fill size */
2923 /* requires CD R/RW */
2924 static int cdrom_get_disc_info(struct cdrom_device_info *cdi, disc_information *di)
2926 struct cdrom_device_ops *cdo = cdi->ops;
2927 struct packet_command cgc;
2930 /* set up command and get the disc info */
2931 init_cdrom_command(&cgc, di, sizeof(*di), CGC_DATA_READ);
2932 cgc.cmd[0] = GPCMD_READ_DISC_INFO;
2933 cgc.cmd[8] = cgc.buflen = 2;
2936 if ((ret = cdo->generic_packet(cdi, &cgc)))
2939 /* not all drives have the same disc_info length, so requeue
2940 * packet with the length the drive tells us it can supply
2942 buflen = be16_to_cpu(di->disc_information_length) +
2943 sizeof(di->disc_information_length);
2945 if (buflen > sizeof(disc_information))
2946 buflen = sizeof(disc_information);
2948 cgc.cmd[8] = cgc.buflen = buflen;
2949 if ((ret = cdo->generic_packet(cdi, &cgc)))
2952 /* return actual fill size */
2956 /* return the last written block on the CD-R media. this is for the udf
2958 int cdrom_get_last_written(struct cdrom_device_info *cdi, long *last_written)
2960 struct cdrom_tocentry toc;
2961 disc_information di;
2962 track_information ti;
2964 int ret = -1, ti_size;
2966 if (!CDROM_CAN(CDC_GENERIC_PACKET))
2969 ret = cdrom_get_disc_info(cdi, &di);
2970 if (ret < (int)(offsetof(typeof(di), last_track_lsb)
2971 + sizeof(di.last_track_lsb)))
2974 /* if unit didn't return msb, it's zeroed by cdrom_get_disc_info */
2975 last_track = (di.last_track_msb << 8) | di.last_track_lsb;
2976 ti_size = cdrom_get_track_info(cdi, last_track, 1, &ti);
2977 if (ti_size < (int)offsetof(typeof(ti), track_start))
2980 /* if this track is blank, try the previous. */
2985 ti_size = cdrom_get_track_info(cdi, last_track, 1, &ti);
2988 if (ti_size < (int)(offsetof(typeof(ti), track_size)
2989 + sizeof(ti.track_size)))
2992 /* if last recorded field is valid, return it. */
2993 if (ti.lra_v && ti_size >= (int)(offsetof(typeof(ti), last_rec_address)
2994 + sizeof(ti.last_rec_address))) {
2995 *last_written = be32_to_cpu(ti.last_rec_address);
2997 /* make it up instead */
2998 *last_written = be32_to_cpu(ti.track_start) +
2999 be32_to_cpu(ti.track_size);
3001 *last_written -= (be32_to_cpu(ti.free_blocks) + 7);
3005 /* this is where we end up if the drive either can't do a
3006 GPCMD_READ_DISC_INFO or GPCMD_READ_TRACK_RZONE_INFO or if
3007 it doesn't give enough information or fails. then we return
3008 the toc contents. */
3010 toc.cdte_format = CDROM_MSF;
3011 toc.cdte_track = CDROM_LEADOUT;
3012 if ((ret = cdi->ops->audio_ioctl(cdi, CDROMREADTOCENTRY, &toc)))
3014 sanitize_format(&toc.cdte_addr, &toc.cdte_format, CDROM_LBA);
3015 *last_written = toc.cdte_addr.lba;
3019 /* return the next writable block. also for udf file system. */
3020 static int cdrom_get_next_writable(struct cdrom_device_info *cdi, long *next_writable)
3022 disc_information di;
3023 track_information ti;
3027 if (!CDROM_CAN(CDC_GENERIC_PACKET))
3028 goto use_last_written;
3030 ret = cdrom_get_disc_info(cdi, &di);
3031 if (ret < 0 || ret < offsetof(typeof(di), last_track_lsb)
3032 + sizeof(di.last_track_lsb))
3033 goto use_last_written;
3035 /* if unit didn't return msb, it's zeroed by cdrom_get_disc_info */
3036 last_track = (di.last_track_msb << 8) | di.last_track_lsb;
3037 ti_size = cdrom_get_track_info(cdi, last_track, 1, &ti);
3038 if (ti_size < 0 || ti_size < offsetof(typeof(ti), track_start))
3039 goto use_last_written;
3041 /* if this track is blank, try the previous. */
3043 if (last_track == 1)
3044 goto use_last_written;
3046 ti_size = cdrom_get_track_info(cdi, last_track, 1, &ti);
3048 goto use_last_written;
3051 /* if next recordable address field is valid, use it. */
3052 if (ti.nwa_v && ti_size >= offsetof(typeof(ti), next_writable)
3053 + sizeof(ti.next_writable)) {
3054 *next_writable = be32_to_cpu(ti.next_writable);
3059 if ((ret = cdrom_get_last_written(cdi, next_writable))) {
3063 *next_writable += 7;
3068 EXPORT_SYMBOL(cdrom_get_last_written);
3069 EXPORT_SYMBOL(register_cdrom);
3070 EXPORT_SYMBOL(unregister_cdrom);
3071 EXPORT_SYMBOL(cdrom_open);
3072 EXPORT_SYMBOL(cdrom_release);
3073 EXPORT_SYMBOL(cdrom_ioctl);
3074 EXPORT_SYMBOL(cdrom_media_changed);
3075 EXPORT_SYMBOL(cdrom_number_of_slots);
3076 EXPORT_SYMBOL(cdrom_mode_select);
3077 EXPORT_SYMBOL(cdrom_mode_sense);
3078 EXPORT_SYMBOL(init_cdrom_command);
3079 EXPORT_SYMBOL(cdrom_get_media_event);
3081 #ifdef CONFIG_SYSCTL
3083 #define CDROM_STR_SIZE 1000
3085 static struct cdrom_sysctl_settings {
3086 char info[CDROM_STR_SIZE]; /* general info */
3087 int autoclose; /* close tray upon mount, etc */
3088 int autoeject; /* eject on umount */
3089 int debug; /* turn on debugging messages */
3090 int lock; /* lock the door on device open */
3091 int check; /* check media type */
3092 } cdrom_sysctl_settings;
3094 static int cdrom_sysctl_info(ctl_table *ctl, int write, struct file * filp,
3095 void __user *buffer, size_t *lenp, loff_t *ppos)
3098 struct cdrom_device_info *cdi;
3099 char *info = cdrom_sysctl_settings.info;
3101 if (!*lenp || (*ppos && !write)) {
3106 pos = sprintf(info, "CD-ROM information, " VERSION "\n");
3108 pos += sprintf(info+pos, "\ndrive name:\t");
3109 for (cdi=topCdromPtr;cdi!=NULL;cdi=cdi->next)
3110 pos += sprintf(info+pos, "\t%s", cdi->name);
3112 pos += sprintf(info+pos, "\ndrive speed:\t");
3113 for (cdi=topCdromPtr;cdi!=NULL;cdi=cdi->next)
3114 pos += sprintf(info+pos, "\t%d", cdi->speed);
3116 pos += sprintf(info+pos, "\ndrive # of slots:");
3117 for (cdi=topCdromPtr;cdi!=NULL;cdi=cdi->next)
3118 pos += sprintf(info+pos, "\t%d", cdi->capacity);
3120 pos += sprintf(info+pos, "\nCan close tray:\t");
3121 for (cdi=topCdromPtr;cdi!=NULL;cdi=cdi->next)
3122 pos += sprintf(info+pos, "\t%d", CDROM_CAN(CDC_CLOSE_TRAY) != 0);
3124 pos += sprintf(info+pos, "\nCan open tray:\t");
3125 for (cdi=topCdromPtr;cdi!=NULL;cdi=cdi->next)
3126 pos += sprintf(info+pos, "\t%d", CDROM_CAN(CDC_OPEN_TRAY) != 0);
3128 pos += sprintf(info+pos, "\nCan lock tray:\t");
3129 for (cdi=topCdromPtr;cdi!=NULL;cdi=cdi->next)
3130 pos += sprintf(info+pos, "\t%d", CDROM_CAN(CDC_LOCK) != 0);
3132 pos += sprintf(info+pos, "\nCan change speed:");
3133 for (cdi=topCdromPtr;cdi!=NULL;cdi=cdi->next)
3134 pos += sprintf(info+pos, "\t%d", CDROM_CAN(CDC_SELECT_SPEED) != 0);
3136 pos += sprintf(info+pos, "\nCan select disk:");
3137 for (cdi=topCdromPtr;cdi!=NULL;cdi=cdi->next)
3138 pos += sprintf(info+pos, "\t%d", CDROM_CAN(CDC_SELECT_DISC) != 0);
3140 pos += sprintf(info+pos, "\nCan read multisession:");
3141 for (cdi=topCdromPtr;cdi!=NULL;cdi=cdi->next)
3142 pos += sprintf(info+pos, "\t%d", CDROM_CAN(CDC_MULTI_SESSION) != 0);
3144 pos += sprintf(info+pos, "\nCan read MCN:\t");
3145 for (cdi=topCdromPtr;cdi!=NULL;cdi=cdi->next)
3146 pos += sprintf(info+pos, "\t%d", CDROM_CAN(CDC_MCN) != 0);
3148 pos += sprintf(info+pos, "\nReports media changed:");
3149 for (cdi=topCdromPtr;cdi!=NULL;cdi=cdi->next)
3150 pos += sprintf(info+pos, "\t%d", CDROM_CAN(CDC_MEDIA_CHANGED) != 0);
3152 pos += sprintf(info+pos, "\nCan play audio:\t");
3153 for (cdi=topCdromPtr;cdi!=NULL;cdi=cdi->next)
3154 pos += sprintf(info+pos, "\t%d", CDROM_CAN(CDC_PLAY_AUDIO) != 0);
3156 pos += sprintf(info+pos, "\nCan write CD-R:\t");
3157 for (cdi=topCdromPtr;cdi!=NULL;cdi=cdi->next)
3158 pos += sprintf(info+pos, "\t%d", CDROM_CAN(CDC_CD_R) != 0);
3160 pos += sprintf(info+pos, "\nCan write CD-RW:");
3161 for (cdi=topCdromPtr;cdi!=NULL;cdi=cdi->next)
3162 pos += sprintf(info+pos, "\t%d", CDROM_CAN(CDC_CD_RW) != 0);
3164 pos += sprintf(info+pos, "\nCan read DVD:\t");
3165 for (cdi=topCdromPtr;cdi!=NULL;cdi=cdi->next)
3166 pos += sprintf(info+pos, "\t%d", CDROM_CAN(CDC_DVD) != 0);
3168 pos += sprintf(info+pos, "\nCan write DVD-R:");
3169 for (cdi=topCdromPtr;cdi!=NULL;cdi=cdi->next)
3170 pos += sprintf(info+pos, "\t%d", CDROM_CAN(CDC_DVD_R) != 0);
3172 pos += sprintf(info+pos, "\nCan write DVD-RAM:");
3173 for (cdi=topCdromPtr;cdi!=NULL;cdi=cdi->next)
3174 pos += sprintf(info+pos, "\t%d", CDROM_CAN(CDC_DVD_RAM) != 0);
3176 pos += sprintf(info+pos, "\nCan read MRW:\t");
3177 for (cdi=topCdromPtr;cdi!=NULL;cdi=cdi->next)
3178 pos += sprintf(info+pos, "\t%d", CDROM_CAN(CDC_MRW) != 0);
3180 pos += sprintf(info+pos, "\nCan write MRW:\t");
3181 for (cdi=topCdromPtr;cdi!=NULL;cdi=cdi->next)
3182 pos += sprintf(info+pos, "\t%d", CDROM_CAN(CDC_MRW_W) != 0);
3184 pos += sprintf(info+pos, "\nCan write RAM:\t");
3185 for (cdi=topCdromPtr;cdi!=NULL;cdi=cdi->next)
3186 pos += sprintf(info+pos, "\t%d", CDROM_CAN(CDC_RAM) != 0);
3188 strcpy(info+pos,"\n\n");
3190 return proc_dostring(ctl, write, filp, buffer, lenp, ppos);
3193 /* Unfortunately, per device settings are not implemented through
3194 procfs/sysctl yet. When they are, this will naturally disappear. For now
3195 just update all drives. Later this will become the template on which
3196 new registered drives will be based. */
3197 static void cdrom_update_settings(void)
3199 struct cdrom_device_info *cdi;
3201 for (cdi = topCdromPtr; cdi != NULL; cdi = cdi->next) {
3202 if (autoclose && CDROM_CAN(CDC_CLOSE_TRAY))
3203 cdi->options |= CDO_AUTO_CLOSE;
3204 else if (!autoclose)
3205 cdi->options &= ~CDO_AUTO_CLOSE;
3206 if (autoeject && CDROM_CAN(CDC_OPEN_TRAY))
3207 cdi->options |= CDO_AUTO_EJECT;
3208 else if (!autoeject)
3209 cdi->options &= ~CDO_AUTO_EJECT;
3210 if (lockdoor && CDROM_CAN(CDC_LOCK))
3211 cdi->options |= CDO_LOCK;
3213 cdi->options &= ~CDO_LOCK;
3214 if (check_media_type)
3215 cdi->options |= CDO_CHECK_TYPE;
3217 cdi->options &= ~CDO_CHECK_TYPE;
3221 static int cdrom_sysctl_handler(ctl_table *ctl, int write, struct file * filp,
3222 void __user *buffer, size_t *lenp, loff_t *ppos)
3224 int *valp = ctl->data;
3228 ret = proc_dointvec(ctl, write, filp, buffer, lenp, ppos);
3230 if (write && *valp != val) {
3232 /* we only care for 1 or 0. */
3238 switch (ctl->ctl_name) {
3239 case DEV_CDROM_AUTOCLOSE: {
3240 if (valp == &cdrom_sysctl_settings.autoclose)
3241 autoclose = cdrom_sysctl_settings.autoclose;
3244 case DEV_CDROM_AUTOEJECT: {
3245 if (valp == &cdrom_sysctl_settings.autoeject)
3246 autoeject = cdrom_sysctl_settings.autoeject;
3249 case DEV_CDROM_DEBUG: {
3250 if (valp == &cdrom_sysctl_settings.debug)
3251 debug = cdrom_sysctl_settings.debug;
3254 case DEV_CDROM_LOCK: {
3255 if (valp == &cdrom_sysctl_settings.lock)
3256 lockdoor = cdrom_sysctl_settings.lock;
3259 case DEV_CDROM_CHECK_MEDIA: {
3260 if (valp == &cdrom_sysctl_settings.check)
3261 check_media_type = cdrom_sysctl_settings.check;
3265 /* update the option flags according to the changes. we
3266 don't have per device options through sysctl yet,
3267 but we will have and then this will disappear. */
3268 cdrom_update_settings();
3274 /* Place files in /proc/sys/dev/cdrom */
3275 static ctl_table cdrom_table[] = {
3277 .ctl_name = DEV_CDROM_INFO,
3279 .data = &cdrom_sysctl_settings.info,
3280 .maxlen = CDROM_STR_SIZE,
3282 .proc_handler = &cdrom_sysctl_info,
3285 .ctl_name = DEV_CDROM_AUTOCLOSE,
3286 .procname = "autoclose",
3287 .data = &cdrom_sysctl_settings.autoclose,
3288 .maxlen = sizeof(int),
3290 .proc_handler = &cdrom_sysctl_handler,
3293 .ctl_name = DEV_CDROM_AUTOEJECT,
3294 .procname = "autoeject",
3295 .data = &cdrom_sysctl_settings.autoeject,
3296 .maxlen = sizeof(int),
3298 .proc_handler = &cdrom_sysctl_handler,
3301 .ctl_name = DEV_CDROM_DEBUG,
3302 .procname = "debug",
3303 .data = &cdrom_sysctl_settings.debug,
3304 .maxlen = sizeof(int),
3306 .proc_handler = &cdrom_sysctl_handler,
3309 .ctl_name = DEV_CDROM_LOCK,
3311 .data = &cdrom_sysctl_settings.lock,
3312 .maxlen = sizeof(int),
3314 .proc_handler = &cdrom_sysctl_handler,
3317 .ctl_name = DEV_CDROM_CHECK_MEDIA,
3318 .procname = "check_media",
3319 .data = &cdrom_sysctl_settings.check,
3320 .maxlen = sizeof(int),
3322 .proc_handler = &cdrom_sysctl_handler
3327 static ctl_table cdrom_cdrom_table[] = {
3329 .ctl_name = DEV_CDROM,
3330 .procname = "cdrom",
3333 .child = cdrom_table,
3338 /* Make sure that /proc/sys/dev is there */
3339 static ctl_table cdrom_root_table[] = {
3341 .ctl_name = CTL_DEV,
3345 .child = cdrom_cdrom_table,
3349 static struct ctl_table_header *cdrom_sysctl_header;
3351 static void cdrom_sysctl_register(void)
3353 static int initialized;
3355 if (initialized == 1)
3358 cdrom_sysctl_header = register_sysctl_table(cdrom_root_table, 1);
3359 if (cdrom_root_table->ctl_name && cdrom_root_table->child->de)
3360 cdrom_root_table->child->de->owner = THIS_MODULE;
3362 /* set the defaults */
3363 cdrom_sysctl_settings.autoclose = autoclose;
3364 cdrom_sysctl_settings.autoeject = autoeject;
3365 cdrom_sysctl_settings.debug = debug;
3366 cdrom_sysctl_settings.lock = lockdoor;
3367 cdrom_sysctl_settings.check = check_media_type;
3372 static void cdrom_sysctl_unregister(void)
3374 if (cdrom_sysctl_header)
3375 unregister_sysctl_table(cdrom_sysctl_header);
3378 #endif /* CONFIG_SYSCTL */
3380 static int __init cdrom_init(void)
3382 #ifdef CONFIG_SYSCTL
3383 cdrom_sysctl_register();
3388 static void __exit cdrom_exit(void)
3390 printk(KERN_INFO "Uniform CD-ROM driver unloaded\n");
3391 #ifdef CONFIG_SYSCTL
3392 cdrom_sysctl_unregister();
3396 module_init(cdrom_init);
3397 module_exit(cdrom_exit);
3398 MODULE_LICENSE("GPL");