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 spinlock_t cdrom_lock = SPIN_LOCK_UNLOCKED;
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 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 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);
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 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 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 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 if (ret!=CDS_DISC_OK) {
1081 goto clean_up_and_return;
1084 cdrom_count_tracks(cdi, &tracks);
1085 if (tracks.error == CDS_NO_DISC) {
1086 cdinfo(CD_OPEN, "bummer. no disc.\n");
1088 goto clean_up_and_return;
1090 /* CD-Players which don't use O_NONBLOCK, workman
1091 * for example, need bit CDO_CHECK_TYPE cleared! */
1092 if (tracks.data==0) {
1093 if (cdi->options & CDO_CHECK_TYPE) {
1094 /* give people a warning shot, now that CDO_CHECK_TYPE
1095 is the default case! */
1096 cdinfo(CD_OPEN, "bummer. wrong media type.\n");
1097 cdinfo(CD_WARNING, "pid %d must open device O_NONBLOCK!\n",
1098 (unsigned int)current->pid);
1100 goto clean_up_and_return;
1103 cdinfo(CD_OPEN, "wrong media type, but CDO_CHECK_TYPE not set.\n");
1107 cdinfo(CD_OPEN, "all seems well, opening the device.\n");
1109 /* all seems well, we can open the device */
1110 ret = cdo->open(cdi, 0); /* open for data */
1111 cdinfo(CD_OPEN, "opening the device gave me %d.\n", ret);
1112 /* After all this careful checking, we shouldn't have problems
1113 opening the device, but we don't want the device locked if
1114 this somehow fails... */
1116 cdinfo(CD_OPEN, "open device failed.\n");
1117 goto clean_up_and_return;
1119 if (CDROM_CAN(CDC_LOCK) && (cdi->options & CDO_LOCK)) {
1120 cdo->lock_door(cdi, 1);
1121 cdinfo(CD_OPEN, "door locked.\n");
1123 cdinfo(CD_OPEN, "device opened successfully.\n");
1126 /* Something failed. Try to unlock the drive, because some drivers
1127 (notably ide-cd) lock the drive after every command. This produced
1128 a nasty bug where after mount failed, the drive would remain locked!
1129 This ensures that the drive gets unlocked after a mount fails. This
1130 is a goto to avoid bloating the driver with redundant code. */
1131 clean_up_and_return:
1132 cdinfo(CD_WARNING, "open failed.\n");
1133 if (CDROM_CAN(CDC_LOCK) && cdi->options & CDO_LOCK) {
1134 cdo->lock_door(cdi, 0);
1135 cdinfo(CD_OPEN, "door unlocked.\n");
1140 /* This code is similar to that in open_for_data. The routine is called
1141 whenever an audio play operation is requested.
1143 int check_for_audio_disc(struct cdrom_device_info * cdi,
1144 struct cdrom_device_ops * cdo)
1148 cdinfo(CD_OPEN, "entering check_for_audio_disc\n");
1149 if (!(cdi->options & CDO_CHECK_TYPE))
1151 if (cdo->drive_status != NULL) {
1152 ret = cdo->drive_status(cdi, CDSL_CURRENT);
1153 cdinfo(CD_OPEN, "drive_status=%d\n", ret);
1154 if (ret == CDS_TRAY_OPEN) {
1155 cdinfo(CD_OPEN, "the tray is open...\n");
1156 /* can/may i close it? */
1157 if (CDROM_CAN(CDC_CLOSE_TRAY) &&
1158 cdi->options & CDO_AUTO_CLOSE) {
1159 cdinfo(CD_OPEN, "trying to close the tray.\n");
1160 ret=cdo->tray_move(cdi,0);
1162 cdinfo(CD_OPEN, "bummer. tried to close tray but failed.\n");
1163 /* Ignore the error from the low
1164 level driver. We don't care why it
1165 couldn't close the tray. We only care
1166 that there is no disc in the drive,
1167 since that is the _REAL_ problem here.*/
1171 cdinfo(CD_OPEN, "bummer. this driver can't close the tray.\n");
1174 /* Ok, the door should be closed now.. Check again */
1175 ret = cdo->drive_status(cdi, CDSL_CURRENT);
1176 if ((ret == CDS_NO_DISC) || (ret==CDS_TRAY_OPEN)) {
1177 cdinfo(CD_OPEN, "bummer. the tray is still not closed.\n");
1180 if (ret!=CDS_DISC_OK) {
1181 cdinfo(CD_OPEN, "bummer. disc isn't ready.\n");
1184 cdinfo(CD_OPEN, "the tray is now closed.\n");
1187 cdrom_count_tracks(cdi, &tracks);
1189 return(tracks.error);
1191 if (tracks.audio==0)
1192 return -EMEDIUMTYPE;
1197 /* Admittedly, the logic below could be performed in a nicer way. */
1198 int cdrom_release(struct cdrom_device_info *cdi, struct file *fp)
1200 struct cdrom_device_ops *cdo = cdi->ops;
1201 int opened_for_data;
1203 cdinfo(CD_CLOSE, "entering cdrom_release\n");
1205 if (cdi->use_count > 0)
1207 if (cdi->use_count == 0)
1208 cdinfo(CD_CLOSE, "Use count for \"/dev/%s\" now zero\n", cdi->name);
1209 if (cdi->use_count == 0)
1210 cdrom_dvd_rw_close_write(cdi);
1211 if (cdi->use_count == 0 &&
1212 (cdo->capability & CDC_LOCK) && !keeplocked) {
1213 cdinfo(CD_CLOSE, "Unlocking door!\n");
1214 cdo->lock_door(cdi, 0);
1216 opened_for_data = !(cdi->options & CDO_USE_FFLAGS) ||
1217 !(fp && fp->f_flags & O_NONBLOCK);
1220 * flush cache on last write release
1222 if (CDROM_CAN(CDC_RAM) && !cdi->use_count && cdi->for_data)
1223 cdrom_close_write(cdi);
1226 if (cdi->use_count == 0) { /* last process that closes dev*/
1227 if (opened_for_data &&
1228 cdi->options & CDO_AUTO_EJECT && CDROM_CAN(CDC_OPEN_TRAY))
1229 cdo->tray_move(cdi, 1);
1234 static int cdrom_read_mech_status(struct cdrom_device_info *cdi,
1235 struct cdrom_changer_info *buf)
1237 struct packet_command cgc;
1238 struct cdrom_device_ops *cdo = cdi->ops;
1242 * Sanyo changer isn't spec compliant (doesn't use regular change
1243 * LOAD_UNLOAD command, and it doesn't implement the mech status
1246 if (cdi->sanyo_slot) {
1247 buf->hdr.nslots = 3;
1248 buf->hdr.curslot = cdi->sanyo_slot == 3 ? 0 : cdi->sanyo_slot;
1249 for (length = 0; length < 3; length++) {
1250 buf->slots[length].disc_present = 1;
1251 buf->slots[length].change = 0;
1256 length = sizeof(struct cdrom_mechstat_header) +
1257 cdi->capacity * sizeof(struct cdrom_slot);
1259 init_cdrom_command(&cgc, buf, length, CGC_DATA_READ);
1260 cgc.cmd[0] = GPCMD_MECHANISM_STATUS;
1261 cgc.cmd[8] = (length >> 8) & 0xff;
1262 cgc.cmd[9] = length & 0xff;
1263 return cdo->generic_packet(cdi, &cgc);
1266 static int cdrom_slot_status(struct cdrom_device_info *cdi, int slot)
1268 struct cdrom_changer_info *info;
1271 cdinfo(CD_CHANGER, "entering cdrom_slot_status()\n");
1272 if (cdi->sanyo_slot)
1275 info = kmalloc(sizeof(*info), GFP_KERNEL);
1279 if ((ret = cdrom_read_mech_status(cdi, info)))
1282 if (info->slots[slot].disc_present)
1292 /* Return the number of slots for an ATAPI/SCSI cdrom,
1293 * return 1 if not a changer.
1295 int cdrom_number_of_slots(struct cdrom_device_info *cdi)
1299 struct cdrom_changer_info *info;
1301 cdinfo(CD_CHANGER, "entering cdrom_number_of_slots()\n");
1302 /* cdrom_read_mech_status requires a valid value for capacity: */
1305 info = kmalloc(sizeof(*info), GFP_KERNEL);
1309 if ((status = cdrom_read_mech_status(cdi, info)) == 0)
1310 nslots = info->hdr.nslots;
1317 /* If SLOT < 0, unload the current slot. Otherwise, try to load SLOT. */
1318 static int cdrom_load_unload(struct cdrom_device_info *cdi, int slot)
1320 struct packet_command cgc;
1322 cdinfo(CD_CHANGER, "entering cdrom_load_unload()\n");
1323 if (cdi->sanyo_slot && slot < 0)
1326 init_cdrom_command(&cgc, NULL, 0, CGC_DATA_NONE);
1327 cgc.cmd[0] = GPCMD_LOAD_UNLOAD;
1328 cgc.cmd[4] = 2 + (slot >= 0);
1330 cgc.timeout = 60 * HZ;
1332 /* The Sanyo 3 CD changer uses byte 7 of the
1333 GPCMD_TEST_UNIT_READY to command to switch CDs instead of
1334 using the GPCMD_LOAD_UNLOAD opcode. */
1335 if (cdi->sanyo_slot && -1 < slot) {
1336 cgc.cmd[0] = GPCMD_TEST_UNIT_READY;
1338 cgc.cmd[4] = cgc.cmd[8] = 0;
1339 cdi->sanyo_slot = slot ? slot : 3;
1342 return cdi->ops->generic_packet(cdi, &cgc);
1345 static int cdrom_select_disc(struct cdrom_device_info *cdi, int slot)
1347 struct cdrom_changer_info *info;
1351 cdinfo(CD_CHANGER, "entering cdrom_select_disc()\n");
1352 if (!CDROM_CAN(CDC_SELECT_DISC))
1353 return -EDRIVE_CANT_DO_THIS;
1355 (void) cdi->ops->media_changed(cdi, slot);
1357 if (slot == CDSL_NONE) {
1358 /* set media changed bits, on both queues */
1359 cdi->mc_flags = 0x3;
1360 return cdrom_load_unload(cdi, -1);
1363 info = kmalloc(sizeof(*info), GFP_KERNEL);
1367 if ((ret = cdrom_read_mech_status(cdi, info))) {
1372 curslot = info->hdr.curslot;
1375 if (cdi->use_count > 1 || keeplocked) {
1376 if (slot == CDSL_CURRENT) {
1383 /* Specifying CDSL_CURRENT will attempt to load the currnet slot,
1384 which is useful if it had been previously unloaded.
1385 Whether it can or not, it returns the current slot.
1386 Similarly, if slot happens to be the current one, we still
1388 if (slot == CDSL_CURRENT)
1391 /* set media changed bits on both queues */
1392 cdi->mc_flags = 0x3;
1393 if ((ret = cdrom_load_unload(cdi, slot)))
1399 /* We want to make media_changed accessible to the user through an
1400 * ioctl. The main problem now is that we must double-buffer the
1401 * low-level implementation, to assure that the VFS and the user both
1402 * see a medium change once.
1406 int media_changed(struct cdrom_device_info *cdi, int queue)
1408 unsigned int mask = (1 << (queue & 1));
1409 int ret = !!(cdi->mc_flags & mask);
1411 if (!CDROM_CAN(CDC_MEDIA_CHANGED))
1413 /* changed since last call? */
1414 if (cdi->ops->media_changed(cdi, CDSL_CURRENT)) {
1415 cdi->mc_flags = 0x3; /* set bit on both queues */
1417 cdi->media_written = 0;
1419 cdi->mc_flags &= ~mask; /* clear bit */
1423 int cdrom_media_changed(struct cdrom_device_info *cdi)
1425 /* This talks to the VFS, which doesn't like errors - just 1 or 0.
1426 * Returning "0" is always safe (media hasn't been changed). Do that
1427 * if the low-level cdrom driver dosn't support media changed. */
1428 if (cdi == NULL || cdi->ops->media_changed == NULL)
1430 if (!CDROM_CAN(CDC_MEDIA_CHANGED))
1432 return media_changed(cdi, 0);
1435 /* badly broken, I know. Is due for a fixup anytime. */
1436 static void cdrom_count_tracks(struct cdrom_device_info *cdi, tracktype* tracks)
1438 struct cdrom_tochdr header;
1439 struct cdrom_tocentry entry;
1446 cdinfo(CD_COUNT_TRACKS, "entering cdrom_count_tracks\n");
1447 if (!CDROM_CAN(CDC_PLAY_AUDIO)) {
1448 tracks->error=CDS_NO_INFO;
1451 /* Grab the TOC header so we can see how many tracks there are */
1452 if ((ret = cdi->ops->audio_ioctl(cdi, CDROMREADTOCHDR, &header))) {
1453 if (ret == -ENOMEDIUM)
1454 tracks->error = CDS_NO_DISC;
1456 tracks->error = CDS_NO_INFO;
1459 /* check what type of tracks are on this disc */
1460 entry.cdte_format = CDROM_MSF;
1461 for (i = header.cdth_trk0; i <= header.cdth_trk1; i++) {
1462 entry.cdte_track = i;
1463 if (cdi->ops->audio_ioctl(cdi, CDROMREADTOCENTRY, &entry)) {
1464 tracks->error=CDS_NO_INFO;
1467 if (entry.cdte_ctrl & CDROM_DATA_TRACK) {
1468 if (entry.cdte_format == 0x10)
1470 else if (entry.cdte_format == 0x20)
1476 cdinfo(CD_COUNT_TRACKS, "track %d: format=%d, ctrl=%d\n",
1477 i, entry.cdte_format, entry.cdte_ctrl);
1479 cdinfo(CD_COUNT_TRACKS, "disc has %d tracks: %d=audio %d=data %d=Cd-I %d=XA\n",
1480 header.cdth_trk1, tracks->audio, tracks->data,
1481 tracks->cdi, tracks->xa);
1484 /* Requests to the low-level drivers will /always/ be done in the
1485 following format convention:
1487 CDROM_LBA: all data-related requests.
1488 CDROM_MSF: all audio-related requests.
1490 However, a low-level implementation is allowed to refuse this
1491 request, and return information in its own favorite format.
1493 It doesn't make sense /at all/ to ask for a play_audio in LBA
1494 format, or ask for multi-session info in MSF format. However, for
1495 backward compatibility these format requests will be satisfied, but
1496 the requests to the low-level drivers will be sanitized in the more
1497 meaningful format indicated above.
1501 void sanitize_format(union cdrom_addr *addr,
1502 u_char * curr, u_char requested)
1504 if (*curr == requested)
1505 return; /* nothing to be done! */
1506 if (requested == CDROM_LBA) {
1507 addr->lba = (int) addr->msf.frame +
1508 75 * (addr->msf.second - 2 + 60 * addr->msf.minute);
1509 } else { /* CDROM_MSF */
1510 int lba = addr->lba;
1511 addr->msf.frame = lba % 75;
1514 addr->msf.second = lba % 60;
1515 addr->msf.minute = lba / 60;
1520 void init_cdrom_command(struct packet_command *cgc, void *buf, int len,
1523 memset(cgc, 0, sizeof(struct packet_command));
1525 memset(buf, 0, len);
1526 cgc->buffer = (char *) buf;
1528 cgc->data_direction = type;
1529 cgc->timeout = 5*HZ;
1534 #define copy_key(dest,src) memcpy((dest), (src), sizeof(dvd_key))
1535 #define copy_chal(dest,src) memcpy((dest), (src), sizeof(dvd_challenge))
1537 static void setup_report_key(struct packet_command *cgc, unsigned agid, unsigned type)
1539 cgc->cmd[0] = GPCMD_REPORT_KEY;
1540 cgc->cmd[10] = type | (agid << 6);
1542 case 0: case 8: case 5: {
1555 cgc->cmd[9] = cgc->buflen;
1556 cgc->data_direction = CGC_DATA_READ;
1559 static void setup_send_key(struct packet_command *cgc, unsigned agid, unsigned type)
1561 cgc->cmd[0] = GPCMD_SEND_KEY;
1562 cgc->cmd[10] = type | (agid << 6);
1577 cgc->cmd[9] = cgc->buflen;
1578 cgc->data_direction = CGC_DATA_WRITE;
1581 static int dvd_do_auth(struct cdrom_device_info *cdi, dvd_authinfo *ai)
1585 struct packet_command cgc;
1586 struct cdrom_device_ops *cdo = cdi->ops;
1587 rpc_state_t rpc_state;
1589 memset(buf, 0, sizeof(buf));
1590 init_cdrom_command(&cgc, buf, 0, CGC_DATA_READ);
1594 case DVD_LU_SEND_AGID:
1595 cdinfo(CD_DVD, "entering DVD_LU_SEND_AGID\n");
1597 setup_report_key(&cgc, ai->lsa.agid, 0);
1599 if ((ret = cdo->generic_packet(cdi, &cgc)))
1602 ai->lsa.agid = buf[7] >> 6;
1603 /* Returning data, let host change state */
1606 case DVD_LU_SEND_KEY1:
1607 cdinfo(CD_DVD, "entering DVD_LU_SEND_KEY1\n");
1608 setup_report_key(&cgc, ai->lsk.agid, 2);
1610 if ((ret = cdo->generic_packet(cdi, &cgc)))
1613 copy_key(ai->lsk.key, &buf[4]);
1614 /* Returning data, let host change state */
1617 case DVD_LU_SEND_CHALLENGE:
1618 cdinfo(CD_DVD, "entering DVD_LU_SEND_CHALLENGE\n");
1619 setup_report_key(&cgc, ai->lsc.agid, 1);
1621 if ((ret = cdo->generic_packet(cdi, &cgc)))
1624 copy_chal(ai->lsc.chal, &buf[4]);
1625 /* Returning data, let host change state */
1629 case DVD_LU_SEND_TITLE_KEY:
1630 cdinfo(CD_DVD, "entering DVD_LU_SEND_TITLE_KEY\n");
1632 setup_report_key(&cgc, ai->lstk.agid, 4);
1633 cgc.cmd[5] = ai->lstk.lba;
1634 cgc.cmd[4] = ai->lstk.lba >> 8;
1635 cgc.cmd[3] = ai->lstk.lba >> 16;
1636 cgc.cmd[2] = ai->lstk.lba >> 24;
1638 if ((ret = cdo->generic_packet(cdi, &cgc)))
1641 ai->lstk.cpm = (buf[4] >> 7) & 1;
1642 ai->lstk.cp_sec = (buf[4] >> 6) & 1;
1643 ai->lstk.cgms = (buf[4] >> 4) & 3;
1644 copy_key(ai->lstk.title_key, &buf[5]);
1645 /* Returning data, let host change state */
1648 case DVD_LU_SEND_ASF:
1649 cdinfo(CD_DVD, "entering DVD_LU_SEND_ASF\n");
1650 setup_report_key(&cgc, ai->lsasf.agid, 5);
1652 if ((ret = cdo->generic_packet(cdi, &cgc)))
1655 ai->lsasf.asf = buf[7] & 1;
1658 /* LU data receive (LU changes state) */
1659 case DVD_HOST_SEND_CHALLENGE:
1660 cdinfo(CD_DVD, "entering DVD_HOST_SEND_CHALLENGE\n");
1661 setup_send_key(&cgc, ai->hsc.agid, 1);
1663 copy_chal(&buf[4], ai->hsc.chal);
1665 if ((ret = cdo->generic_packet(cdi, &cgc)))
1668 ai->type = DVD_LU_SEND_KEY1;
1671 case DVD_HOST_SEND_KEY2:
1672 cdinfo(CD_DVD, "entering DVD_HOST_SEND_KEY2\n");
1673 setup_send_key(&cgc, ai->hsk.agid, 3);
1675 copy_key(&buf[4], ai->hsk.key);
1677 if ((ret = cdo->generic_packet(cdi, &cgc))) {
1678 ai->type = DVD_AUTH_FAILURE;
1681 ai->type = DVD_AUTH_ESTABLISHED;
1685 case DVD_INVALIDATE_AGID:
1687 cdinfo(CD_DVD, "entering DVD_INVALIDATE_AGID\n");
1688 setup_report_key(&cgc, ai->lsa.agid, 0x3f);
1689 if ((ret = cdo->generic_packet(cdi, &cgc)))
1693 /* Get region settings */
1694 case DVD_LU_SEND_RPC_STATE:
1695 cdinfo(CD_DVD, "entering DVD_LU_SEND_RPC_STATE\n");
1696 setup_report_key(&cgc, 0, 8);
1697 memset(&rpc_state, 0, sizeof(rpc_state_t));
1698 cgc.buffer = (char *) &rpc_state;
1700 if ((ret = cdo->generic_packet(cdi, &cgc)))
1703 ai->lrpcs.type = rpc_state.type_code;
1704 ai->lrpcs.vra = rpc_state.vra;
1705 ai->lrpcs.ucca = rpc_state.ucca;
1706 ai->lrpcs.region_mask = rpc_state.region_mask;
1707 ai->lrpcs.rpc_scheme = rpc_state.rpc_scheme;
1710 /* Set region settings */
1711 case DVD_HOST_SEND_RPC_STATE:
1712 cdinfo(CD_DVD, "entering DVD_HOST_SEND_RPC_STATE\n");
1713 setup_send_key(&cgc, 0, 6);
1715 buf[4] = ai->hrpcs.pdrc;
1717 if ((ret = cdo->generic_packet(cdi, &cgc)))
1722 cdinfo(CD_WARNING, "Invalid DVD key ioctl (%d)\n", ai->type);
1729 static int dvd_read_physical(struct cdrom_device_info *cdi, dvd_struct *s)
1731 unsigned char buf[21], *base;
1732 struct dvd_layer *layer;
1733 struct packet_command cgc;
1734 struct cdrom_device_ops *cdo = cdi->ops;
1735 int ret, layer_num = s->physical.layer_num;
1737 if (layer_num >= DVD_LAYERS)
1740 init_cdrom_command(&cgc, buf, sizeof(buf), CGC_DATA_READ);
1741 cgc.cmd[0] = GPCMD_READ_DVD_STRUCTURE;
1742 cgc.cmd[6] = layer_num;
1743 cgc.cmd[7] = s->type;
1744 cgc.cmd[9] = cgc.buflen & 0xff;
1747 * refrain from reporting errors on non-existing layers (mainly)
1751 if ((ret = cdo->generic_packet(cdi, &cgc)))
1755 layer = &s->physical.layer[layer_num];
1758 * place the data... really ugly, but at least we won't have to
1759 * worry about endianess in userspace.
1761 memset(layer, 0, sizeof(*layer));
1762 layer->book_version = base[0] & 0xf;
1763 layer->book_type = base[0] >> 4;
1764 layer->min_rate = base[1] & 0xf;
1765 layer->disc_size = base[1] >> 4;
1766 layer->layer_type = base[2] & 0xf;
1767 layer->track_path = (base[2] >> 4) & 1;
1768 layer->nlayers = (base[2] >> 5) & 3;
1769 layer->track_density = base[3] & 0xf;
1770 layer->linear_density = base[3] >> 4;
1771 layer->start_sector = base[5] << 16 | base[6] << 8 | base[7];
1772 layer->end_sector = base[9] << 16 | base[10] << 8 | base[11];
1773 layer->end_sector_l0 = base[13] << 16 | base[14] << 8 | base[15];
1774 layer->bca = base[16] >> 7;
1779 static int dvd_read_copyright(struct cdrom_device_info *cdi, dvd_struct *s)
1783 struct packet_command cgc;
1784 struct cdrom_device_ops *cdo = cdi->ops;
1786 init_cdrom_command(&cgc, buf, sizeof(buf), CGC_DATA_READ);
1787 cgc.cmd[0] = GPCMD_READ_DVD_STRUCTURE;
1788 cgc.cmd[6] = s->copyright.layer_num;
1789 cgc.cmd[7] = s->type;
1790 cgc.cmd[8] = cgc.buflen >> 8;
1791 cgc.cmd[9] = cgc.buflen & 0xff;
1793 if ((ret = cdo->generic_packet(cdi, &cgc)))
1796 s->copyright.cpst = buf[4];
1797 s->copyright.rmi = buf[5];
1802 static int dvd_read_disckey(struct cdrom_device_info *cdi, dvd_struct *s)
1806 struct packet_command cgc;
1807 struct cdrom_device_ops *cdo = cdi->ops;
1809 size = sizeof(s->disckey.value) + 4;
1811 if ((buf = (u_char *) kmalloc(size, GFP_KERNEL)) == NULL)
1814 init_cdrom_command(&cgc, buf, size, CGC_DATA_READ);
1815 cgc.cmd[0] = GPCMD_READ_DVD_STRUCTURE;
1816 cgc.cmd[7] = s->type;
1817 cgc.cmd[8] = size >> 8;
1818 cgc.cmd[9] = size & 0xff;
1819 cgc.cmd[10] = s->disckey.agid << 6;
1821 if (!(ret = cdo->generic_packet(cdi, &cgc)))
1822 memcpy(s->disckey.value, &buf[4], sizeof(s->disckey.value));
1828 static int dvd_read_bca(struct cdrom_device_info *cdi, dvd_struct *s)
1831 u_char buf[4 + 188];
1832 struct packet_command cgc;
1833 struct cdrom_device_ops *cdo = cdi->ops;
1835 init_cdrom_command(&cgc, buf, sizeof(buf), CGC_DATA_READ);
1836 cgc.cmd[0] = GPCMD_READ_DVD_STRUCTURE;
1837 cgc.cmd[7] = s->type;
1838 cgc.cmd[9] = cgc.buflen = 0xff;
1840 if ((ret = cdo->generic_packet(cdi, &cgc)))
1843 s->bca.len = buf[0] << 8 | buf[1];
1844 if (s->bca.len < 12 || s->bca.len > 188) {
1845 cdinfo(CD_WARNING, "Received invalid BCA length (%d)\n", s->bca.len);
1848 memcpy(s->bca.value, &buf[4], s->bca.len);
1853 static int dvd_read_manufact(struct cdrom_device_info *cdi, dvd_struct *s)
1857 struct packet_command cgc;
1858 struct cdrom_device_ops *cdo = cdi->ops;
1860 size = sizeof(s->manufact.value) + 4;
1862 if ((buf = (u_char *) kmalloc(size, GFP_KERNEL)) == NULL)
1865 init_cdrom_command(&cgc, buf, size, CGC_DATA_READ);
1866 cgc.cmd[0] = GPCMD_READ_DVD_STRUCTURE;
1867 cgc.cmd[7] = s->type;
1868 cgc.cmd[8] = size >> 8;
1869 cgc.cmd[9] = size & 0xff;
1871 if ((ret = cdo->generic_packet(cdi, &cgc))) {
1876 s->manufact.len = buf[0] << 8 | buf[1];
1877 if (s->manufact.len < 0 || s->manufact.len > 2048) {
1878 cdinfo(CD_WARNING, "Received invalid manufacture info length"
1879 " (%d)\n", s->manufact.len);
1882 memcpy(s->manufact.value, &buf[4], s->manufact.len);
1889 static int dvd_read_struct(struct cdrom_device_info *cdi, dvd_struct *s)
1892 case DVD_STRUCT_PHYSICAL:
1893 return dvd_read_physical(cdi, s);
1895 case DVD_STRUCT_COPYRIGHT:
1896 return dvd_read_copyright(cdi, s);
1898 case DVD_STRUCT_DISCKEY:
1899 return dvd_read_disckey(cdi, s);
1901 case DVD_STRUCT_BCA:
1902 return dvd_read_bca(cdi, s);
1904 case DVD_STRUCT_MANUFACT:
1905 return dvd_read_manufact(cdi, s);
1908 cdinfo(CD_WARNING, ": Invalid DVD structure read requested (%d)\n",
1914 int cdrom_mode_sense(struct cdrom_device_info *cdi,
1915 struct packet_command *cgc,
1916 int page_code, int page_control)
1918 struct cdrom_device_ops *cdo = cdi->ops;
1920 memset(cgc->cmd, 0, sizeof(cgc->cmd));
1922 cgc->cmd[0] = GPCMD_MODE_SENSE_10;
1923 cgc->cmd[2] = page_code | (page_control << 6);
1924 cgc->cmd[7] = cgc->buflen >> 8;
1925 cgc->cmd[8] = cgc->buflen & 0xff;
1926 cgc->data_direction = CGC_DATA_READ;
1927 return cdo->generic_packet(cdi, cgc);
1930 int cdrom_mode_select(struct cdrom_device_info *cdi,
1931 struct packet_command *cgc)
1933 struct cdrom_device_ops *cdo = cdi->ops;
1935 memset(cgc->cmd, 0, sizeof(cgc->cmd));
1936 memset(cgc->buffer, 0, 2);
1937 cgc->cmd[0] = GPCMD_MODE_SELECT_10;
1938 cgc->cmd[1] = 0x10; /* PF */
1939 cgc->cmd[7] = cgc->buflen >> 8;
1940 cgc->cmd[8] = cgc->buflen & 0xff;
1941 cgc->data_direction = CGC_DATA_WRITE;
1942 return cdo->generic_packet(cdi, cgc);
1945 static int cdrom_read_subchannel(struct cdrom_device_info *cdi,
1946 struct cdrom_subchnl *subchnl, int mcn)
1948 struct cdrom_device_ops *cdo = cdi->ops;
1949 struct packet_command cgc;
1953 init_cdrom_command(&cgc, buffer, 16, CGC_DATA_READ);
1954 cgc.cmd[0] = GPCMD_READ_SUBCHANNEL;
1955 cgc.cmd[1] = 2; /* MSF addressing */
1956 cgc.cmd[2] = 0x40; /* request subQ data */
1957 cgc.cmd[3] = mcn ? 2 : 1;
1960 if ((ret = cdo->generic_packet(cdi, &cgc)))
1963 subchnl->cdsc_audiostatus = cgc.buffer[1];
1964 subchnl->cdsc_format = CDROM_MSF;
1965 subchnl->cdsc_ctrl = cgc.buffer[5] & 0xf;
1966 subchnl->cdsc_trk = cgc.buffer[6];
1967 subchnl->cdsc_ind = cgc.buffer[7];
1969 subchnl->cdsc_reladdr.msf.minute = cgc.buffer[13];
1970 subchnl->cdsc_reladdr.msf.second = cgc.buffer[14];
1971 subchnl->cdsc_reladdr.msf.frame = cgc.buffer[15];
1972 subchnl->cdsc_absaddr.msf.minute = cgc.buffer[9];
1973 subchnl->cdsc_absaddr.msf.second = cgc.buffer[10];
1974 subchnl->cdsc_absaddr.msf.frame = cgc.buffer[11];
1980 * Specific READ_10 interface
1982 static int cdrom_read_cd(struct cdrom_device_info *cdi,
1983 struct packet_command *cgc, int lba,
1984 int blocksize, int nblocks)
1986 struct cdrom_device_ops *cdo = cdi->ops;
1988 memset(&cgc->cmd, 0, sizeof(cgc->cmd));
1989 cgc->cmd[0] = GPCMD_READ_10;
1990 cgc->cmd[2] = (lba >> 24) & 0xff;
1991 cgc->cmd[3] = (lba >> 16) & 0xff;
1992 cgc->cmd[4] = (lba >> 8) & 0xff;
1993 cgc->cmd[5] = lba & 0xff;
1994 cgc->cmd[6] = (nblocks >> 16) & 0xff;
1995 cgc->cmd[7] = (nblocks >> 8) & 0xff;
1996 cgc->cmd[8] = nblocks & 0xff;
1997 cgc->buflen = blocksize * nblocks;
1998 return cdo->generic_packet(cdi, cgc);
2001 /* very generic interface for reading the various types of blocks */
2002 static int cdrom_read_block(struct cdrom_device_info *cdi,
2003 struct packet_command *cgc,
2004 int lba, int nblocks, int format, int blksize)
2006 struct cdrom_device_ops *cdo = cdi->ops;
2008 memset(&cgc->cmd, 0, sizeof(cgc->cmd));
2009 cgc->cmd[0] = GPCMD_READ_CD;
2010 /* expected sector size - cdda,mode1,etc. */
2011 cgc->cmd[1] = format << 2;
2012 /* starting address */
2013 cgc->cmd[2] = (lba >> 24) & 0xff;
2014 cgc->cmd[3] = (lba >> 16) & 0xff;
2015 cgc->cmd[4] = (lba >> 8) & 0xff;
2016 cgc->cmd[5] = lba & 0xff;
2017 /* number of blocks */
2018 cgc->cmd[6] = (nblocks >> 16) & 0xff;
2019 cgc->cmd[7] = (nblocks >> 8) & 0xff;
2020 cgc->cmd[8] = nblocks & 0xff;
2021 cgc->buflen = blksize * nblocks;
2023 /* set the header info returned */
2025 case CD_FRAMESIZE_RAW0 : cgc->cmd[9] = 0x58; break;
2026 case CD_FRAMESIZE_RAW1 : cgc->cmd[9] = 0x78; break;
2027 case CD_FRAMESIZE_RAW : cgc->cmd[9] = 0xf8; break;
2028 default : cgc->cmd[9] = 0x10;
2031 return cdo->generic_packet(cdi, cgc);
2034 static int cdrom_read_cdda_old(struct cdrom_device_info *cdi, __u8 __user *ubuf,
2035 int lba, int nframes)
2037 struct packet_command cgc;
2041 cdi->last_sense = 0;
2043 memset(&cgc, 0, sizeof(cgc));
2046 * start with will ra.nframes size, back down if alloc fails
2050 cgc.buffer = kmalloc(CD_FRAMESIZE_RAW * nr, GFP_KERNEL);
2060 if (!access_ok(VERIFY_WRITE, ubuf, nframes * CD_FRAMESIZE_RAW)) {
2065 cgc.data_direction = CGC_DATA_READ;
2066 while (nframes > 0) {
2070 ret = cdrom_read_block(cdi, &cgc, lba, nr, 1, CD_FRAMESIZE_RAW);
2073 if (__copy_to_user(ubuf, cgc.buffer, CD_FRAMESIZE_RAW * nr)) {
2077 ubuf += CD_FRAMESIZE_RAW * nr;
2086 static int cdrom_read_cdda_bpc(struct cdrom_device_info *cdi, __u8 __user *ubuf,
2087 int lba, int nframes)
2089 request_queue_t *q = cdi->disk->queue;
2098 cdi->last_sense = 0;
2102 if (cdi->cdda_method == CDDA_BPC_SINGLE)
2104 if (nr * CD_FRAMESIZE_RAW > (q->max_sectors << 9))
2105 nr = (q->max_sectors << 9) / CD_FRAMESIZE_RAW;
2107 len = nr * CD_FRAMESIZE_RAW;
2109 rq = blk_rq_map_user(q, READ, ubuf, len);
2113 memset(rq->cmd, 0, sizeof(rq->cmd));
2114 rq->cmd[0] = GPCMD_READ_CD;
2115 rq->cmd[1] = 1 << 2;
2116 rq->cmd[2] = (lba >> 24) & 0xff;
2117 rq->cmd[3] = (lba >> 16) & 0xff;
2118 rq->cmd[4] = (lba >> 8) & 0xff;
2119 rq->cmd[5] = lba & 0xff;
2120 rq->cmd[6] = (nr >> 16) & 0xff;
2121 rq->cmd[7] = (nr >> 8) & 0xff;
2122 rq->cmd[8] = nr & 0xff;
2126 rq->flags |= REQ_BLOCK_PC;
2127 rq->timeout = 60 * HZ;
2131 blk_queue_bounce(q, &rq->bio);
2133 if (blk_execute_rq(q, cdi->disk, rq)) {
2134 struct request_sense *s = rq->sense;
2136 cdi->last_sense = s->sense_key;
2139 if (blk_rq_unmap_user(rq, bio, len))
2153 static int cdrom_read_cdda(struct cdrom_device_info *cdi, __u8 __user *ubuf,
2154 int lba, int nframes)
2158 if (cdi->cdda_method == CDDA_OLD)
2159 return cdrom_read_cdda_old(cdi, ubuf, lba, nframes);
2163 * for anything else than success and io error, we need to retry
2165 ret = cdrom_read_cdda_bpc(cdi, ubuf, lba, nframes);
2166 if (!ret || ret != -EIO)
2170 * I've seen drives get sense 4/8/3 udma crc errors on multi
2171 * frame dma, so drop to single frame dma if we need to
2173 if (cdi->cdda_method == CDDA_BPC_FULL && nframes > 1) {
2174 printk("cdrom: dropping to single frame dma\n");
2175 cdi->cdda_method = CDDA_BPC_SINGLE;
2180 * so we have an io error of some sort with multi frame dma. if the
2181 * condition wasn't a hardware error
2182 * problems, not for any error
2184 if (cdi->last_sense != 0x04 && cdi->last_sense != 0x0b)
2187 printk("cdrom: dropping to old style cdda (sense=%x)\n", cdi->last_sense);
2188 cdi->cdda_method = CDDA_OLD;
2189 return cdrom_read_cdda_old(cdi, ubuf, lba, nframes);
2192 /* Just about every imaginable ioctl is supported in the Uniform layer
2193 * these days. ATAPI / SCSI specific code now mainly resides in
2196 int cdrom_ioctl(struct file * file, struct cdrom_device_info *cdi,
2197 struct inode *ip, unsigned int cmd, unsigned long arg)
2199 struct cdrom_device_ops *cdo = cdi->ops;
2202 /* Try the generic SCSI command ioctl's first.. */
2203 ret = scsi_cmd_ioctl(file, ip->i_bdev->bd_disk, cmd, (void __user *)arg);
2207 /* the first few commands do not deal with audio drive_info, but
2208 only with routines in cdrom device operations. */
2210 case CDROMMULTISESSION: {
2211 struct cdrom_multisession ms_info;
2212 u_char requested_format;
2213 cdinfo(CD_DO_IOCTL, "entering CDROMMULTISESSION\n");
2214 if (!(cdo->capability & CDC_MULTI_SESSION))
2216 IOCTL_IN(arg, struct cdrom_multisession, ms_info);
2217 requested_format = ms_info.addr_format;
2218 if (!((requested_format == CDROM_MSF) ||
2219 (requested_format == CDROM_LBA)))
2221 ms_info.addr_format = CDROM_LBA;
2222 if ((ret=cdo->get_last_session(cdi, &ms_info)))
2224 sanitize_format(&ms_info.addr, &ms_info.addr_format,
2226 IOCTL_OUT(arg, struct cdrom_multisession, ms_info);
2227 cdinfo(CD_DO_IOCTL, "CDROMMULTISESSION successful\n");
2232 cdinfo(CD_DO_IOCTL, "entering CDROMEJECT\n");
2233 if (!CDROM_CAN(CDC_OPEN_TRAY))
2235 if (cdi->use_count != 1 || keeplocked)
2237 if (CDROM_CAN(CDC_LOCK))
2238 if ((ret=cdo->lock_door(cdi, 0)))
2241 return cdo->tray_move(cdi, 1);
2244 case CDROMCLOSETRAY: {
2245 cdinfo(CD_DO_IOCTL, "entering CDROMCLOSETRAY\n");
2246 if (!CDROM_CAN(CDC_CLOSE_TRAY))
2248 return cdo->tray_move(cdi, 0);
2251 case CDROMEJECT_SW: {
2252 cdinfo(CD_DO_IOCTL, "entering CDROMEJECT_SW\n");
2253 if (!CDROM_CAN(CDC_OPEN_TRAY))
2257 cdi->options &= ~(CDO_AUTO_CLOSE | CDO_AUTO_EJECT);
2259 cdi->options |= CDO_AUTO_CLOSE | CDO_AUTO_EJECT;
2263 case CDROM_MEDIA_CHANGED: {
2264 struct cdrom_changer_info *info;
2267 cdinfo(CD_DO_IOCTL, "entering CDROM_MEDIA_CHANGED\n");
2268 if (!CDROM_CAN(CDC_MEDIA_CHANGED))
2271 /* cannot select disc or select current disc */
2272 if (!CDROM_CAN(CDC_SELECT_DISC) || arg == CDSL_CURRENT)
2273 return media_changed(cdi, 1);
2275 if ((unsigned int)arg >= cdi->capacity)
2278 info = kmalloc(sizeof(*info), GFP_KERNEL);
2282 if ((ret = cdrom_read_mech_status(cdi, info))) {
2287 changed = info->slots[arg].change;
2292 case CDROM_SET_OPTIONS: {
2293 cdinfo(CD_DO_IOCTL, "entering CDROM_SET_OPTIONS\n");
2294 /* options need to be in sync with capability. too late for
2295 that, so we have to check each one separately... */
2297 case CDO_USE_FFLAGS:
2298 case CDO_CHECK_TYPE:
2301 if (!CDROM_CAN(CDC_LOCK))
2305 return cdi->options;
2306 /* default is basically CDO_[AUTO_CLOSE|AUTO_EJECT] */
2308 if (!CDROM_CAN(arg))
2311 cdi->options |= (int) arg;
2312 return cdi->options;
2315 case CDROM_CLEAR_OPTIONS: {
2316 cdinfo(CD_DO_IOCTL, "entering CDROM_CLEAR_OPTIONS\n");
2317 cdi->options &= ~(int) arg;
2318 return cdi->options;
2321 case CDROM_SELECT_SPEED: {
2322 cdinfo(CD_DO_IOCTL, "entering CDROM_SELECT_SPEED\n");
2323 if (!CDROM_CAN(CDC_SELECT_SPEED))
2325 return cdo->select_speed(cdi, arg);
2328 case CDROM_SELECT_DISC: {
2329 cdinfo(CD_DO_IOCTL, "entering CDROM_SELECT_DISC\n");
2330 if (!CDROM_CAN(CDC_SELECT_DISC))
2333 if ((arg != CDSL_CURRENT) && (arg != CDSL_NONE))
2334 if ((int)arg >= cdi->capacity)
2337 /* cdo->select_disc is a hook to allow a driver-specific
2338 * way of seleting disc. However, since there is no
2339 * equiv hook for cdrom_slot_status this may not
2340 * actually be useful...
2342 if (cdo->select_disc != NULL)
2343 return cdo->select_disc(cdi, arg);
2345 /* no driver specific select_disc(), call our own */
2346 cdinfo(CD_CHANGER, "Using generic cdrom_select_disc()\n");
2347 return cdrom_select_disc(cdi, arg);
2351 if (!capable(CAP_SYS_ADMIN))
2353 cdinfo(CD_DO_IOCTL, "entering CDROM_RESET\n");
2354 if (!CDROM_CAN(CDC_RESET))
2356 invalidate_bdev(ip->i_bdev, 0);
2357 return cdo->reset(cdi);
2360 case CDROM_LOCKDOOR: {
2361 cdinfo(CD_DO_IOCTL, "%socking door.\n", arg ? "L" : "Unl");
2362 if (!CDROM_CAN(CDC_LOCK))
2363 return -EDRIVE_CANT_DO_THIS;
2364 keeplocked = arg ? 1 : 0;
2365 /* don't unlock the door on multiple opens,but allow root
2367 if ((cdi->use_count != 1) && !arg && !capable(CAP_SYS_ADMIN))
2369 return cdo->lock_door(cdi, arg);
2373 if (!capable(CAP_SYS_ADMIN))
2375 cdinfo(CD_DO_IOCTL, "%sabling debug.\n", arg ? "En" : "Dis");
2376 debug = arg ? 1 : 0;
2380 case CDROM_GET_CAPABILITY: {
2381 cdinfo(CD_DO_IOCTL, "entering CDROM_GET_CAPABILITY\n");
2382 return (cdo->capability & ~cdi->mask);
2385 /* The following function is implemented, although very few audio
2386 * discs give Universal Product Code information, which should just be
2387 * the Medium Catalog Number on the box. Note, that the way the code
2388 * is written on the CD is /not/ uniform across all discs!
2390 case CDROM_GET_MCN: {
2391 struct cdrom_mcn mcn;
2392 cdinfo(CD_DO_IOCTL, "entering CDROM_GET_MCN\n");
2393 if (!(cdo->capability & CDC_MCN))
2395 if ((ret=cdo->get_mcn(cdi, &mcn)))
2397 IOCTL_OUT(arg, struct cdrom_mcn, mcn);
2398 cdinfo(CD_DO_IOCTL, "CDROM_GET_MCN successful\n");
2402 case CDROM_DRIVE_STATUS: {
2403 cdinfo(CD_DO_IOCTL, "entering CDROM_DRIVE_STATUS\n");
2404 if (!(cdo->capability & CDC_DRIVE_STATUS))
2406 if (!CDROM_CAN(CDC_SELECT_DISC))
2407 return cdo->drive_status(cdi, CDSL_CURRENT);
2408 if ((arg == CDSL_CURRENT) || (arg == CDSL_NONE))
2409 return cdo->drive_status(cdi, CDSL_CURRENT);
2410 if (((int)arg >= cdi->capacity))
2412 return cdrom_slot_status(cdi, arg);
2415 /* Ok, this is where problems start. The current interface for the
2416 CDROM_DISC_STATUS ioctl is flawed. It makes the false assumption
2417 that CDs are all CDS_DATA_1 or all CDS_AUDIO, etc. Unfortunatly,
2418 while this is often the case, it is also very common for CDs to
2419 have some tracks with data, and some tracks with audio. Just
2420 because I feel like it, I declare the following to be the best
2421 way to cope. If the CD has ANY data tracks on it, it will be
2422 returned as a data CD. If it has any XA tracks, I will return
2423 it as that. Now I could simplify this interface by combining these
2424 returns with the above, but this more clearly demonstrates
2425 the problem with the current interface. Too bad this wasn't
2426 designed to use bitmasks... -Erik
2428 Well, now we have the option CDS_MIXED: a mixed-type CD.
2429 User level programmers might feel the ioctl is not very useful.
2432 case CDROM_DISC_STATUS: {
2434 cdinfo(CD_DO_IOCTL, "entering CDROM_DISC_STATUS\n");
2435 cdrom_count_tracks(cdi, &tracks);
2437 return(tracks.error);
2439 /* Policy mode on */
2440 if (tracks.audio > 0) {
2441 if (tracks.data==0 && tracks.cdi==0 && tracks.xa==0)
2446 if (tracks.cdi > 0) return CDS_XA_2_2;
2447 if (tracks.xa > 0) return CDS_XA_2_1;
2448 if (tracks.data > 0) return CDS_DATA_1;
2449 /* Policy mode off */
2451 cdinfo(CD_WARNING,"This disc doesn't have any tracks I recognize!\n");
2455 case CDROM_CHANGER_NSLOTS: {
2456 cdinfo(CD_DO_IOCTL, "entering CDROM_CHANGER_NSLOTS\n");
2457 return cdi->capacity;
2461 /* use the ioctls that are implemented through the generic_packet()
2462 interface. this may look at bit funny, but if -ENOTTY is
2463 returned that particular ioctl is not implemented and we
2464 let it go through the device specific ones. */
2465 if (CDROM_CAN(CDC_GENERIC_PACKET)) {
2466 ret = mmc_ioctl(cdi, cmd, arg);
2467 if (ret != -ENOTTY) {
2472 /* note: most of the cdinfo() calls are commented out here,
2473 because they fill up the sys log when CD players poll
2476 case CDROMSUBCHNL: {
2477 struct cdrom_subchnl q;
2478 u_char requested, back;
2479 if (!CDROM_CAN(CDC_PLAY_AUDIO))
2481 /* cdinfo(CD_DO_IOCTL,"entering CDROMSUBCHNL\n");*/
2482 IOCTL_IN(arg, struct cdrom_subchnl, q);
2483 requested = q.cdsc_format;
2484 if (!((requested == CDROM_MSF) ||
2485 (requested == CDROM_LBA)))
2487 q.cdsc_format = CDROM_MSF;
2488 if ((ret=cdo->audio_ioctl(cdi, cmd, &q)))
2490 back = q.cdsc_format; /* local copy */
2491 sanitize_format(&q.cdsc_absaddr, &back, requested);
2492 sanitize_format(&q.cdsc_reladdr, &q.cdsc_format, requested);
2493 IOCTL_OUT(arg, struct cdrom_subchnl, q);
2494 /* cdinfo(CD_DO_IOCTL, "CDROMSUBCHNL successful\n"); */
2497 case CDROMREADTOCHDR: {
2498 struct cdrom_tochdr header;
2499 if (!CDROM_CAN(CDC_PLAY_AUDIO))
2501 /* cdinfo(CD_DO_IOCTL, "entering CDROMREADTOCHDR\n"); */
2502 IOCTL_IN(arg, struct cdrom_tochdr, header);
2503 if ((ret=cdo->audio_ioctl(cdi, cmd, &header)))
2505 IOCTL_OUT(arg, struct cdrom_tochdr, header);
2506 /* cdinfo(CD_DO_IOCTL, "CDROMREADTOCHDR successful\n"); */
2509 case CDROMREADTOCENTRY: {
2510 struct cdrom_tocentry entry;
2511 u_char requested_format;
2512 if (!CDROM_CAN(CDC_PLAY_AUDIO))
2514 /* cdinfo(CD_DO_IOCTL, "entering CDROMREADTOCENTRY\n"); */
2515 IOCTL_IN(arg, struct cdrom_tocentry, entry);
2516 requested_format = entry.cdte_format;
2517 if (!((requested_format == CDROM_MSF) ||
2518 (requested_format == CDROM_LBA)))
2520 /* make interface to low-level uniform */
2521 entry.cdte_format = CDROM_MSF;
2522 if ((ret=cdo->audio_ioctl(cdi, cmd, &entry)))
2524 sanitize_format(&entry.cdte_addr,
2525 &entry.cdte_format, requested_format);
2526 IOCTL_OUT(arg, struct cdrom_tocentry, entry);
2527 /* cdinfo(CD_DO_IOCTL, "CDROMREADTOCENTRY successful\n"); */
2530 case CDROMPLAYMSF: {
2531 struct cdrom_msf msf;
2532 if (!CDROM_CAN(CDC_PLAY_AUDIO))
2534 cdinfo(CD_DO_IOCTL, "entering CDROMPLAYMSF\n");
2535 IOCTL_IN(arg, struct cdrom_msf, msf);
2536 return cdo->audio_ioctl(cdi, cmd, &msf);
2538 case CDROMPLAYTRKIND: {
2540 if (!CDROM_CAN(CDC_PLAY_AUDIO))
2542 cdinfo(CD_DO_IOCTL, "entering CDROMPLAYTRKIND\n");
2543 IOCTL_IN(arg, struct cdrom_ti, ti);
2545 return cdo->audio_ioctl(cdi, cmd, &ti);
2547 case CDROMVOLCTRL: {
2548 struct cdrom_volctrl volume;
2549 if (!CDROM_CAN(CDC_PLAY_AUDIO))
2551 cdinfo(CD_DO_IOCTL, "entering CDROMVOLCTRL\n");
2552 IOCTL_IN(arg, struct cdrom_volctrl, volume);
2553 return cdo->audio_ioctl(cdi, cmd, &volume);
2555 case CDROMVOLREAD: {
2556 struct cdrom_volctrl volume;
2557 if (!CDROM_CAN(CDC_PLAY_AUDIO))
2559 cdinfo(CD_DO_IOCTL, "entering CDROMVOLREAD\n");
2560 if ((ret=cdo->audio_ioctl(cdi, cmd, &volume)))
2562 IOCTL_OUT(arg, struct cdrom_volctrl, volume);
2569 if (!CDROM_CAN(CDC_PLAY_AUDIO))
2571 cdinfo(CD_DO_IOCTL, "doing audio ioctl (start/stop/pause/resume)\n");
2573 return cdo->audio_ioctl(cdi, cmd, NULL);
2577 /* do the device specific ioctls */
2578 if (CDROM_CAN(CDC_IOCTLS))
2579 return cdo->dev_ioctl(cdi, cmd, arg);
2585 int msf_to_lba(char m, char s, char f)
2587 return (((m * CD_SECS) + s) * CD_FRAMES + f) - CD_MSF_OFFSET;
2591 * Required when we need to use READ_10 to issue other than 2048 block
2594 static int cdrom_switch_blocksize(struct cdrom_device_info *cdi, int size)
2596 struct cdrom_device_ops *cdo = cdi->ops;
2597 struct packet_command cgc;
2598 struct modesel_head mh;
2600 memset(&mh, 0, sizeof(mh));
2601 mh.block_desc_length = 0x08;
2602 mh.block_length_med = (size >> 8) & 0xff;
2603 mh.block_length_lo = size & 0xff;
2605 memset(&cgc, 0, sizeof(cgc));
2607 cgc.cmd[1] = 1 << 4;
2609 cgc.buflen = sizeof(mh);
2610 cgc.buffer = (char *) &mh;
2611 cgc.data_direction = CGC_DATA_WRITE;
2612 mh.block_desc_length = 0x08;
2613 mh.block_length_med = (size >> 8) & 0xff;
2614 mh.block_length_lo = size & 0xff;
2616 return cdo->generic_packet(cdi, &cgc);
2619 static int mmc_ioctl(struct cdrom_device_info *cdi, unsigned int cmd,
2622 struct cdrom_device_ops *cdo = cdi->ops;
2623 struct packet_command cgc;
2624 struct request_sense sense;
2625 unsigned char buffer[32];
2628 memset(&cgc, 0, sizeof(cgc));
2630 /* build a unified command and queue it through
2631 cdo->generic_packet() */
2634 case CDROMREADMODE1:
2635 case CDROMREADMODE2: {
2636 struct cdrom_msf msf;
2637 int blocksize = 0, format = 0, lba;
2641 blocksize = CD_FRAMESIZE_RAW;
2643 case CDROMREADMODE1:
2644 blocksize = CD_FRAMESIZE;
2647 case CDROMREADMODE2:
2648 blocksize = CD_FRAMESIZE_RAW0;
2651 IOCTL_IN(arg, struct cdrom_msf, msf);
2652 lba = msf_to_lba(msf.cdmsf_min0,msf.cdmsf_sec0,msf.cdmsf_frame0);
2653 /* FIXME: we need upper bound checking, too!! */
2656 cgc.buffer = (char *) kmalloc(blocksize, GFP_KERNEL);
2657 if (cgc.buffer == NULL)
2659 memset(&sense, 0, sizeof(sense));
2661 cgc.data_direction = CGC_DATA_READ;
2662 ret = cdrom_read_block(cdi, &cgc, lba, 1, format, blocksize);
2663 if (ret && sense.sense_key==0x05 && sense.asc==0x20 && sense.ascq==0x00) {
2665 * SCSI-II devices are not required to support
2666 * READ_CD, so let's try switching block size
2668 /* FIXME: switch back again... */
2669 if ((ret = cdrom_switch_blocksize(cdi, blocksize))) {
2674 ret = cdrom_read_cd(cdi, &cgc, lba, blocksize, 1);
2675 ret |= cdrom_switch_blocksize(cdi, blocksize);
2677 if (!ret && copy_to_user((char __user *)arg, cgc.buffer, blocksize))
2682 case CDROMREADAUDIO: {
2683 struct cdrom_read_audio ra;
2686 IOCTL_IN(arg, struct cdrom_read_audio, ra);
2688 if (ra.addr_format == CDROM_MSF)
2689 lba = msf_to_lba(ra.addr.msf.minute,
2692 else if (ra.addr_format == CDROM_LBA)
2697 /* FIXME: we need upper bound checking, too!! */
2698 if (lba < 0 || ra.nframes <= 0 || ra.nframes > CD_FRAMES)
2701 return cdrom_read_cdda(cdi, ra.buf, lba, ra.nframes);
2703 case CDROMSUBCHNL: {
2704 struct cdrom_subchnl q;
2705 u_char requested, back;
2706 IOCTL_IN(arg, struct cdrom_subchnl, q);
2707 requested = q.cdsc_format;
2708 if (!((requested == CDROM_MSF) ||
2709 (requested == CDROM_LBA)))
2711 q.cdsc_format = CDROM_MSF;
2712 if ((ret = cdrom_read_subchannel(cdi, &q, 0)))
2714 back = q.cdsc_format; /* local copy */
2715 sanitize_format(&q.cdsc_absaddr, &back, requested);
2716 sanitize_format(&q.cdsc_reladdr, &q.cdsc_format, requested);
2717 IOCTL_OUT(arg, struct cdrom_subchnl, q);
2718 /* cdinfo(CD_DO_IOCTL, "CDROMSUBCHNL successful\n"); */
2721 case CDROMPLAYMSF: {
2722 struct cdrom_msf msf;
2723 cdinfo(CD_DO_IOCTL, "entering CDROMPLAYMSF\n");
2724 IOCTL_IN(arg, struct cdrom_msf, msf);
2725 cgc.cmd[0] = GPCMD_PLAY_AUDIO_MSF;
2726 cgc.cmd[3] = msf.cdmsf_min0;
2727 cgc.cmd[4] = msf.cdmsf_sec0;
2728 cgc.cmd[5] = msf.cdmsf_frame0;
2729 cgc.cmd[6] = msf.cdmsf_min1;
2730 cgc.cmd[7] = msf.cdmsf_sec1;
2731 cgc.cmd[8] = msf.cdmsf_frame1;
2732 cgc.data_direction = CGC_DATA_NONE;
2733 return cdo->generic_packet(cdi, &cgc);
2735 case CDROMPLAYBLK: {
2736 struct cdrom_blk blk;
2737 cdinfo(CD_DO_IOCTL, "entering CDROMPLAYBLK\n");
2738 IOCTL_IN(arg, struct cdrom_blk, blk);
2739 cgc.cmd[0] = GPCMD_PLAY_AUDIO_10;
2740 cgc.cmd[2] = (blk.from >> 24) & 0xff;
2741 cgc.cmd[3] = (blk.from >> 16) & 0xff;
2742 cgc.cmd[4] = (blk.from >> 8) & 0xff;
2743 cgc.cmd[5] = blk.from & 0xff;
2744 cgc.cmd[7] = (blk.len >> 8) & 0xff;
2745 cgc.cmd[8] = blk.len & 0xff;
2746 cgc.data_direction = CGC_DATA_NONE;
2747 return cdo->generic_packet(cdi, &cgc);
2750 case CDROMVOLREAD: {
2751 struct cdrom_volctrl volctrl;
2752 char mask[sizeof(buffer)];
2753 unsigned short offset;
2755 cdinfo(CD_DO_IOCTL, "entering CDROMVOLUME\n");
2757 IOCTL_IN(arg, struct cdrom_volctrl, volctrl);
2759 cgc.buffer = buffer;
2761 if ((ret = cdrom_mode_sense(cdi, &cgc, GPMODE_AUDIO_CTL_PAGE, 0)))
2764 /* originally the code depended on buffer[1] to determine
2765 how much data is available for transfer. buffer[1] is
2766 unfortunately ambigious and the only reliable way seem
2767 to be to simply skip over the block descriptor... */
2768 offset = 8 + be16_to_cpu(*(unsigned short *)(buffer+6));
2770 if (offset + 16 > sizeof(buffer))
2773 if (offset + 16 > cgc.buflen) {
2774 cgc.buflen = offset+16;
2775 ret = cdrom_mode_sense(cdi, &cgc,
2776 GPMODE_AUDIO_CTL_PAGE, 0);
2782 if ((buffer[offset] & 0x3f) != GPMODE_AUDIO_CTL_PAGE ||
2783 buffer[offset+1] < 14)
2786 /* now we have the current volume settings. if it was only
2787 a CDROMVOLREAD, return these values */
2788 if (cmd == CDROMVOLREAD) {
2789 volctrl.channel0 = buffer[offset+9];
2790 volctrl.channel1 = buffer[offset+11];
2791 volctrl.channel2 = buffer[offset+13];
2792 volctrl.channel3 = buffer[offset+15];
2793 IOCTL_OUT(arg, struct cdrom_volctrl, volctrl);
2797 /* get the volume mask */
2799 if ((ret = cdrom_mode_sense(cdi, &cgc,
2800 GPMODE_AUDIO_CTL_PAGE, 1)))
2803 buffer[offset+9] = volctrl.channel0 & mask[offset+9];
2804 buffer[offset+11] = volctrl.channel1 & mask[offset+11];
2805 buffer[offset+13] = volctrl.channel2 & mask[offset+13];
2806 buffer[offset+15] = volctrl.channel3 & mask[offset+15];
2809 cgc.buffer = buffer + offset - 8;
2810 memset(cgc.buffer, 0, 8);
2811 return cdrom_mode_select(cdi, &cgc);
2816 cdinfo(CD_DO_IOCTL, "entering CDROMSTART/CDROMSTOP\n");
2817 cgc.cmd[0] = GPCMD_START_STOP_UNIT;
2819 cgc.cmd[4] = (cmd == CDROMSTART) ? 1 : 0;
2820 cgc.data_direction = CGC_DATA_NONE;
2821 return cdo->generic_packet(cdi, &cgc);
2826 cdinfo(CD_DO_IOCTL, "entering CDROMPAUSE/CDROMRESUME\n");
2827 cgc.cmd[0] = GPCMD_PAUSE_RESUME;
2828 cgc.cmd[8] = (cmd == CDROMRESUME) ? 1 : 0;
2829 cgc.data_direction = CGC_DATA_NONE;
2830 return cdo->generic_packet(cdi, &cgc);
2833 case DVD_READ_STRUCT: {
2835 int size = sizeof(dvd_struct);
2836 if (!CDROM_CAN(CDC_DVD))
2838 if ((s = (dvd_struct *) kmalloc(size, GFP_KERNEL)) == NULL)
2840 cdinfo(CD_DO_IOCTL, "entering DVD_READ_STRUCT\n");
2841 if (copy_from_user(s, (dvd_struct __user *)arg, size)) {
2845 if ((ret = dvd_read_struct(cdi, s))) {
2849 if (copy_to_user((dvd_struct __user *)arg, s, size))
2857 if (!CDROM_CAN(CDC_DVD))
2859 cdinfo(CD_DO_IOCTL, "entering DVD_AUTH\n");
2860 IOCTL_IN(arg, dvd_authinfo, ai);
2861 if ((ret = dvd_do_auth (cdi, &ai)))
2863 IOCTL_OUT(arg, dvd_authinfo, ai);
2867 case CDROM_NEXT_WRITABLE: {
2869 cdinfo(CD_DO_IOCTL, "entering CDROM_NEXT_WRITABLE\n");
2870 if ((ret = cdrom_get_next_writable(cdi, &next)))
2872 IOCTL_OUT(arg, long, next);
2875 case CDROM_LAST_WRITTEN: {
2877 cdinfo(CD_DO_IOCTL, "entering CDROM_LAST_WRITTEN\n");
2878 if ((ret = cdrom_get_last_written(cdi, &last)))
2880 IOCTL_OUT(arg, long, last);
2888 static int cdrom_get_track_info(struct cdrom_device_info *cdi, __u16 track, __u8 type,
2889 track_information *ti)
2891 struct cdrom_device_ops *cdo = cdi->ops;
2892 struct packet_command cgc;
2895 init_cdrom_command(&cgc, ti, 8, CGC_DATA_READ);
2896 cgc.cmd[0] = GPCMD_READ_TRACK_RZONE_INFO;
2897 cgc.cmd[1] = type & 3;
2898 cgc.cmd[4] = (track & 0xff00) >> 8;
2899 cgc.cmd[5] = track & 0xff;
2903 if ((ret = cdo->generic_packet(cdi, &cgc)))
2906 buflen = be16_to_cpu(ti->track_information_length) +
2907 sizeof(ti->track_information_length);
2909 if (buflen > sizeof(track_information))
2910 buflen = sizeof(track_information);
2912 cgc.cmd[8] = cgc.buflen = buflen;
2913 if ((ret = cdo->generic_packet(cdi, &cgc)))
2916 /* return actual fill size */
2920 /* requires CD R/RW */
2921 static int cdrom_get_disc_info(struct cdrom_device_info *cdi, disc_information *di)
2923 struct cdrom_device_ops *cdo = cdi->ops;
2924 struct packet_command cgc;
2927 /* set up command and get the disc info */
2928 init_cdrom_command(&cgc, di, sizeof(*di), CGC_DATA_READ);
2929 cgc.cmd[0] = GPCMD_READ_DISC_INFO;
2930 cgc.cmd[8] = cgc.buflen = 2;
2933 if ((ret = cdo->generic_packet(cdi, &cgc)))
2936 /* not all drives have the same disc_info length, so requeue
2937 * packet with the length the drive tells us it can supply
2939 buflen = be16_to_cpu(di->disc_information_length) +
2940 sizeof(di->disc_information_length);
2942 if (buflen > sizeof(disc_information))
2943 buflen = sizeof(disc_information);
2945 cgc.cmd[8] = cgc.buflen = buflen;
2946 if ((ret = cdo->generic_packet(cdi, &cgc)))
2949 /* return actual fill size */
2953 /* return the last written block on the CD-R media. this is for the udf
2955 int cdrom_get_last_written(struct cdrom_device_info *cdi, long *last_written)
2957 struct cdrom_tocentry toc;
2958 disc_information di;
2959 track_information ti;
2961 int ret = -1, ti_size;
2963 if (!CDROM_CAN(CDC_GENERIC_PACKET))
2966 ret = cdrom_get_disc_info(cdi, &di);
2967 if (ret < (int)(offsetof(typeof(di), last_track_lsb)
2968 + sizeof(di.last_track_lsb)))
2971 /* if unit didn't return msb, it's zeroed by cdrom_get_disc_info */
2972 last_track = (di.last_track_msb << 8) | di.last_track_lsb;
2973 ti_size = cdrom_get_track_info(cdi, last_track, 1, &ti);
2974 if (ti_size < (int)offsetof(typeof(ti), track_start))
2977 /* if this track is blank, try the previous. */
2982 ti_size = cdrom_get_track_info(cdi, last_track, 1, &ti);
2985 if (ti_size < (int)(offsetof(typeof(ti), track_size)
2986 + sizeof(ti.track_size)))
2989 /* if last recorded field is valid, return it. */
2990 if (ti.lra_v && ti_size >= (int)(offsetof(typeof(ti), last_rec_address)
2991 + sizeof(ti.last_rec_address))) {
2992 *last_written = be32_to_cpu(ti.last_rec_address);
2994 /* make it up instead */
2995 *last_written = be32_to_cpu(ti.track_start) +
2996 be32_to_cpu(ti.track_size);
2998 *last_written -= (be32_to_cpu(ti.free_blocks) + 7);
3002 /* this is where we end up if the drive either can't do a
3003 GPCMD_READ_DISC_INFO or GPCMD_READ_TRACK_RZONE_INFO or if
3004 it doesn't give enough information or fails. then we return
3005 the toc contents. */
3007 toc.cdte_format = CDROM_MSF;
3008 toc.cdte_track = CDROM_LEADOUT;
3009 if ((ret = cdi->ops->audio_ioctl(cdi, CDROMREADTOCENTRY, &toc)))
3011 sanitize_format(&toc.cdte_addr, &toc.cdte_format, CDROM_LBA);
3012 *last_written = toc.cdte_addr.lba;
3016 /* return the next writable block. also for udf file system. */
3017 static int cdrom_get_next_writable(struct cdrom_device_info *cdi, long *next_writable)
3019 disc_information di;
3020 track_information ti;
3024 if (!CDROM_CAN(CDC_GENERIC_PACKET))
3025 goto use_last_written;
3027 ret = cdrom_get_disc_info(cdi, &di);
3028 if (ret < 0 || ret < offsetof(typeof(di), last_track_lsb)
3029 + sizeof(di.last_track_lsb))
3030 goto use_last_written;
3032 /* if unit didn't return msb, it's zeroed by cdrom_get_disc_info */
3033 last_track = (di.last_track_msb << 8) | di.last_track_lsb;
3034 ti_size = cdrom_get_track_info(cdi, last_track, 1, &ti);
3035 if (ti_size < 0 || ti_size < offsetof(typeof(ti), track_start))
3036 goto use_last_written;
3038 /* if this track is blank, try the previous. */
3040 if (last_track == 1)
3041 goto use_last_written;
3043 ti_size = cdrom_get_track_info(cdi, last_track, 1, &ti);
3045 goto use_last_written;
3048 /* if next recordable address field is valid, use it. */
3049 if (ti.nwa_v && ti_size >= offsetof(typeof(ti), next_writable)
3050 + sizeof(ti.next_writable)) {
3051 *next_writable = be32_to_cpu(ti.next_writable);
3056 if ((ret = cdrom_get_last_written(cdi, next_writable))) {
3060 *next_writable += 7;
3065 EXPORT_SYMBOL(cdrom_get_last_written);
3066 EXPORT_SYMBOL(register_cdrom);
3067 EXPORT_SYMBOL(unregister_cdrom);
3068 EXPORT_SYMBOL(cdrom_open);
3069 EXPORT_SYMBOL(cdrom_release);
3070 EXPORT_SYMBOL(cdrom_ioctl);
3071 EXPORT_SYMBOL(cdrom_media_changed);
3072 EXPORT_SYMBOL(cdrom_number_of_slots);
3073 EXPORT_SYMBOL(cdrom_mode_select);
3074 EXPORT_SYMBOL(cdrom_mode_sense);
3075 EXPORT_SYMBOL(init_cdrom_command);
3076 EXPORT_SYMBOL(cdrom_get_media_event);
3077 EXPORT_SYMBOL(cdrom_is_mrw);
3078 EXPORT_SYMBOL(cdrom_is_random_writable);
3080 #ifdef CONFIG_SYSCTL
3082 #define CDROM_STR_SIZE 1000
3084 struct cdrom_sysctl_settings {
3085 char info[CDROM_STR_SIZE]; /* general info */
3086 int autoclose; /* close tray upon mount, etc */
3087 int autoeject; /* eject on umount */
3088 int debug; /* turn on debugging messages */
3089 int lock; /* lock the door on device open */
3090 int check; /* check media type */
3091 } cdrom_sysctl_settings;
3093 int cdrom_sysctl_info(ctl_table *ctl, int write, struct file * filp,
3094 void __user *buffer, size_t *lenp, loff_t *ppos)
3097 struct cdrom_device_info *cdi;
3098 char *info = cdrom_sysctl_settings.info;
3100 if (!*lenp || (*ppos && !write)) {
3105 pos = sprintf(info, "CD-ROM information, " VERSION "\n");
3107 pos += sprintf(info+pos, "\ndrive name:\t");
3108 for (cdi=topCdromPtr;cdi!=NULL;cdi=cdi->next)
3109 pos += sprintf(info+pos, "\t%s", cdi->name);
3111 pos += sprintf(info+pos, "\ndrive speed:\t");
3112 for (cdi=topCdromPtr;cdi!=NULL;cdi=cdi->next)
3113 pos += sprintf(info+pos, "\t%d", cdi->speed);
3115 pos += sprintf(info+pos, "\ndrive # of slots:");
3116 for (cdi=topCdromPtr;cdi!=NULL;cdi=cdi->next)
3117 pos += sprintf(info+pos, "\t%d", cdi->capacity);
3119 pos += sprintf(info+pos, "\nCan close tray:\t");
3120 for (cdi=topCdromPtr;cdi!=NULL;cdi=cdi->next)
3121 pos += sprintf(info+pos, "\t%d", CDROM_CAN(CDC_CLOSE_TRAY) != 0);
3123 pos += sprintf(info+pos, "\nCan open tray:\t");
3124 for (cdi=topCdromPtr;cdi!=NULL;cdi=cdi->next)
3125 pos += sprintf(info+pos, "\t%d", CDROM_CAN(CDC_OPEN_TRAY) != 0);
3127 pos += sprintf(info+pos, "\nCan lock tray:\t");
3128 for (cdi=topCdromPtr;cdi!=NULL;cdi=cdi->next)
3129 pos += sprintf(info+pos, "\t%d", CDROM_CAN(CDC_LOCK) != 0);
3131 pos += sprintf(info+pos, "\nCan change speed:");
3132 for (cdi=topCdromPtr;cdi!=NULL;cdi=cdi->next)
3133 pos += sprintf(info+pos, "\t%d", CDROM_CAN(CDC_SELECT_SPEED) != 0);
3135 pos += sprintf(info+pos, "\nCan select disk:");
3136 for (cdi=topCdromPtr;cdi!=NULL;cdi=cdi->next)
3137 pos += sprintf(info+pos, "\t%d", CDROM_CAN(CDC_SELECT_DISC) != 0);
3139 pos += sprintf(info+pos, "\nCan read multisession:");
3140 for (cdi=topCdromPtr;cdi!=NULL;cdi=cdi->next)
3141 pos += sprintf(info+pos, "\t%d", CDROM_CAN(CDC_MULTI_SESSION) != 0);
3143 pos += sprintf(info+pos, "\nCan read MCN:\t");
3144 for (cdi=topCdromPtr;cdi!=NULL;cdi=cdi->next)
3145 pos += sprintf(info+pos, "\t%d", CDROM_CAN(CDC_MCN) != 0);
3147 pos += sprintf(info+pos, "\nReports media changed:");
3148 for (cdi=topCdromPtr;cdi!=NULL;cdi=cdi->next)
3149 pos += sprintf(info+pos, "\t%d", CDROM_CAN(CDC_MEDIA_CHANGED) != 0);
3151 pos += sprintf(info+pos, "\nCan play audio:\t");
3152 for (cdi=topCdromPtr;cdi!=NULL;cdi=cdi->next)
3153 pos += sprintf(info+pos, "\t%d", CDROM_CAN(CDC_PLAY_AUDIO) != 0);
3155 pos += sprintf(info+pos, "\nCan write CD-R:\t");
3156 for (cdi=topCdromPtr;cdi!=NULL;cdi=cdi->next)
3157 pos += sprintf(info+pos, "\t%d", CDROM_CAN(CDC_CD_R) != 0);
3159 pos += sprintf(info+pos, "\nCan write CD-RW:");
3160 for (cdi=topCdromPtr;cdi!=NULL;cdi=cdi->next)
3161 pos += sprintf(info+pos, "\t%d", CDROM_CAN(CDC_CD_RW) != 0);
3163 pos += sprintf(info+pos, "\nCan read DVD:\t");
3164 for (cdi=topCdromPtr;cdi!=NULL;cdi=cdi->next)
3165 pos += sprintf(info+pos, "\t%d", CDROM_CAN(CDC_DVD) != 0);
3167 pos += sprintf(info+pos, "\nCan write DVD-R:");
3168 for (cdi=topCdromPtr;cdi!=NULL;cdi=cdi->next)
3169 pos += sprintf(info+pos, "\t%d", CDROM_CAN(CDC_DVD_R) != 0);
3171 pos += sprintf(info+pos, "\nCan write DVD-RAM:");
3172 for (cdi=topCdromPtr;cdi!=NULL;cdi=cdi->next)
3173 pos += sprintf(info+pos, "\t%d", CDROM_CAN(CDC_DVD_RAM) != 0);
3175 pos += sprintf(info+pos, "\nCan read MRW:\t");
3176 for (cdi=topCdromPtr;cdi!=NULL;cdi=cdi->next)
3177 pos += sprintf(info+pos, "\t%d", CDROM_CAN(CDC_MRW) != 0);
3179 pos += sprintf(info+pos, "\nCan write MRW:\t");
3180 for (cdi=topCdromPtr;cdi!=NULL;cdi=cdi->next)
3181 pos += sprintf(info+pos, "\t%d", CDROM_CAN(CDC_MRW_W) != 0);
3183 pos += sprintf(info+pos, "\nCan write RAM:\t");
3184 for (cdi=topCdromPtr;cdi!=NULL;cdi=cdi->next)
3185 pos += sprintf(info+pos, "\t%d", CDROM_CAN(CDC_RAM) != 0);
3187 strcpy(info+pos,"\n\n");
3189 return proc_dostring(ctl, write, filp, buffer, lenp, ppos);
3192 /* Unfortunately, per device settings are not implemented through
3193 procfs/sysctl yet. When they are, this will naturally disappear. For now
3194 just update all drives. Later this will become the template on which
3195 new registered drives will be based. */
3196 void cdrom_update_settings(void)
3198 struct cdrom_device_info *cdi;
3200 for (cdi = topCdromPtr; cdi != NULL; cdi = cdi->next) {
3201 if (autoclose && CDROM_CAN(CDC_CLOSE_TRAY))
3202 cdi->options |= CDO_AUTO_CLOSE;
3203 else if (!autoclose)
3204 cdi->options &= ~CDO_AUTO_CLOSE;
3205 if (autoeject && CDROM_CAN(CDC_OPEN_TRAY))
3206 cdi->options |= CDO_AUTO_EJECT;
3207 else if (!autoeject)
3208 cdi->options &= ~CDO_AUTO_EJECT;
3209 if (lockdoor && CDROM_CAN(CDC_LOCK))
3210 cdi->options |= CDO_LOCK;
3212 cdi->options &= ~CDO_LOCK;
3213 if (check_media_type)
3214 cdi->options |= CDO_CHECK_TYPE;
3216 cdi->options &= ~CDO_CHECK_TYPE;
3220 static int cdrom_sysctl_handler(ctl_table *ctl, int write, struct file * filp,
3221 void __user *buffer, size_t *lenp, loff_t *ppos)
3223 int *valp = ctl->data;
3227 ret = proc_dointvec(ctl, write, filp, buffer, lenp, ppos);
3229 if (write && *valp != val) {
3231 /* we only care for 1 or 0. */
3237 switch (ctl->ctl_name) {
3238 case DEV_CDROM_AUTOCLOSE: {
3239 if (valp == &cdrom_sysctl_settings.autoclose)
3240 autoclose = cdrom_sysctl_settings.autoclose;
3243 case DEV_CDROM_AUTOEJECT: {
3244 if (valp == &cdrom_sysctl_settings.autoeject)
3245 autoeject = cdrom_sysctl_settings.autoeject;
3248 case DEV_CDROM_DEBUG: {
3249 if (valp == &cdrom_sysctl_settings.debug)
3250 debug = cdrom_sysctl_settings.debug;
3253 case DEV_CDROM_LOCK: {
3254 if (valp == &cdrom_sysctl_settings.lock)
3255 lockdoor = cdrom_sysctl_settings.lock;
3258 case DEV_CDROM_CHECK_MEDIA: {
3259 if (valp == &cdrom_sysctl_settings.check)
3260 check_media_type = cdrom_sysctl_settings.check;
3264 /* update the option flags according to the changes. we
3265 don't have per device options through sysctl yet,
3266 but we will have and then this will disappear. */
3267 cdrom_update_settings();
3273 /* Place files in /proc/sys/dev/cdrom */
3274 ctl_table cdrom_table[] = {
3276 .ctl_name = DEV_CDROM_INFO,
3278 .data = &cdrom_sysctl_settings.info,
3279 .maxlen = CDROM_STR_SIZE,
3281 .proc_handler = &cdrom_sysctl_info,
3284 .ctl_name = DEV_CDROM_AUTOCLOSE,
3285 .procname = "autoclose",
3286 .data = &cdrom_sysctl_settings.autoclose,
3287 .maxlen = sizeof(int),
3289 .proc_handler = &cdrom_sysctl_handler,
3292 .ctl_name = DEV_CDROM_AUTOEJECT,
3293 .procname = "autoeject",
3294 .data = &cdrom_sysctl_settings.autoeject,
3295 .maxlen = sizeof(int),
3297 .proc_handler = &cdrom_sysctl_handler,
3300 .ctl_name = DEV_CDROM_DEBUG,
3301 .procname = "debug",
3302 .data = &cdrom_sysctl_settings.debug,
3303 .maxlen = sizeof(int),
3305 .proc_handler = &cdrom_sysctl_handler,
3308 .ctl_name = DEV_CDROM_LOCK,
3310 .data = &cdrom_sysctl_settings.lock,
3311 .maxlen = sizeof(int),
3313 .proc_handler = &cdrom_sysctl_handler,
3316 .ctl_name = DEV_CDROM_CHECK_MEDIA,
3317 .procname = "check_media",
3318 .data = &cdrom_sysctl_settings.check,
3319 .maxlen = sizeof(int),
3321 .proc_handler = &cdrom_sysctl_handler
3326 ctl_table cdrom_cdrom_table[] = {
3328 .ctl_name = DEV_CDROM,
3329 .procname = "cdrom",
3332 .child = cdrom_table,
3337 /* Make sure that /proc/sys/dev is there */
3338 ctl_table cdrom_root_table[] = {
3340 .ctl_name = CTL_DEV,
3344 .child = cdrom_cdrom_table,
3348 static struct ctl_table_header *cdrom_sysctl_header;
3350 static void cdrom_sysctl_register(void)
3352 static int initialized;
3354 if (initialized == 1)
3357 cdrom_sysctl_header = register_sysctl_table(cdrom_root_table, 1);
3358 if (cdrom_root_table->ctl_name && cdrom_root_table->child->de)
3359 cdrom_root_table->child->de->owner = THIS_MODULE;
3361 /* set the defaults */
3362 cdrom_sysctl_settings.autoclose = autoclose;
3363 cdrom_sysctl_settings.autoeject = autoeject;
3364 cdrom_sysctl_settings.debug = debug;
3365 cdrom_sysctl_settings.lock = lockdoor;
3366 cdrom_sysctl_settings.check = check_media_type;
3371 static void cdrom_sysctl_unregister(void)
3373 if (cdrom_sysctl_header)
3374 unregister_sysctl_table(cdrom_sysctl_header);
3377 #endif /* CONFIG_SYSCTL */
3379 static int __init cdrom_init(void)
3381 #ifdef CONFIG_SYSCTL
3382 cdrom_sysctl_register();
3387 static void __exit cdrom_exit(void)
3389 printk(KERN_INFO "Uniform CD-ROM driver unloaded\n");
3390 #ifdef CONFIG_SYSCTL
3391 cdrom_sysctl_unregister();
3395 module_init(cdrom_init);
3396 module_exit(cdrom_exit);
3397 MODULE_LICENSE("GPL");