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/module.h>
267 #include <linux/fs.h>
268 #include <linux/buffer_head.h>
269 #include <linux/major.h>
270 #include <linux/types.h>
271 #include <linux/errno.h>
272 #include <linux/kernel.h>
273 #include <linux/mm.h>
274 #include <linux/slab.h>
275 #include <linux/cdrom.h>
276 #include <linux/sysctl.h>
277 #include <linux/proc_fs.h>
278 #include <linux/blkpg.h>
279 #include <linux/init.h>
280 #include <linux/fcntl.h>
281 #include <linux/blkdev.h>
282 #include <linux/times.h>
284 #include <asm/uaccess.h>
286 /* used to tell the module to turn on full debugging messages */
288 /* used to keep tray locked at all times */
289 static int keeplocked;
290 /* default compatibility mode */
291 static int autoclose=1;
292 static int autoeject;
293 static int lockdoor = 1;
294 /* will we ever get to use this... sigh. */
295 static int check_media_type;
296 /* automatically restart mrw format */
297 static int mrw_format_restart = 1;
298 module_param(debug, bool, 0);
299 module_param(autoclose, bool, 0);
300 module_param(autoeject, bool, 0);
301 module_param(lockdoor, bool, 0);
302 module_param(check_media_type, bool, 0);
303 module_param(mrw_format_restart, bool, 0);
305 static DEFINE_MUTEX(cdrom_mutex);
307 static const char *mrw_format_status[] = {
314 static const char *mrw_address_space[] = { "DMA", "GAA" };
316 #if (ERRLOGMASK!=CD_NOTHING)
317 #define cdinfo(type, fmt, args...) \
318 if ((ERRLOGMASK & type) || debug==1 ) \
319 printk(KERN_INFO "cdrom: " fmt, ## args)
321 #define cdinfo(type, fmt, args...)
324 /* These are used to simplify getting data in from and back to user land */
325 #define IOCTL_IN(arg, type, in) \
326 if (copy_from_user(&(in), (type __user *) (arg), sizeof (in))) \
329 #define IOCTL_OUT(arg, type, out) \
330 if (copy_to_user((type __user *) (arg), &(out), sizeof (out))) \
333 /* The (cdo->capability & ~cdi->mask & CDC_XXX) construct was used in
334 a lot of places. This macro makes the code more clear. */
335 #define CDROM_CAN(type) (cdi->ops->capability & ~cdi->mask & (type))
337 /* used in the audio ioctls */
338 #define CHECKAUDIO if ((ret=check_for_audio_disc(cdi, cdo))) return ret
341 * Another popular OS uses 7 seconds as the hard timeout for default
342 * commands, so it is a good choice for us as well.
344 #define CDROM_DEF_TIMEOUT (7 * HZ)
346 /* Not-exported routines. */
347 static int open_for_data(struct cdrom_device_info * cdi);
348 static int check_for_audio_disc(struct cdrom_device_info * cdi,
349 struct cdrom_device_ops * cdo);
350 static void sanitize_format(union cdrom_addr *addr,
351 u_char * curr, u_char requested);
352 static int mmc_ioctl(struct cdrom_device_info *cdi, unsigned int cmd,
355 int cdrom_get_last_written(struct cdrom_device_info *, long *);
356 static int cdrom_get_next_writable(struct cdrom_device_info *, long *);
357 static void cdrom_count_tracks(struct cdrom_device_info *, tracktype*);
359 static int cdrom_mrw_exit(struct cdrom_device_info *cdi);
361 static int cdrom_get_disc_info(struct cdrom_device_info *cdi, disc_information *di);
363 static void cdrom_sysctl_register(void);
365 static LIST_HEAD(cdrom_list);
367 static int cdrom_dummy_generic_packet(struct cdrom_device_info *cdi,
368 struct packet_command *cgc)
371 cgc->sense->sense_key = 0x05;
372 cgc->sense->asc = 0x20;
373 cgc->sense->ascq = 0x00;
380 /* This macro makes sure we don't have to check on cdrom_device_ops
381 * existence in the run-time routines below. Change_capability is a
382 * hack to have the capability flags defined const, while we can still
383 * change it here without gcc complaining at every line.
385 #define ENSURE(call, bits) if (cdo->call == NULL) *change_capability &= ~(bits)
387 int register_cdrom(struct cdrom_device_info *cdi)
389 static char banner_printed;
390 struct cdrom_device_ops *cdo = cdi->ops;
391 int *change_capability = (int *)&cdo->capability; /* hack */
393 cdinfo(CD_OPEN, "entering register_cdrom\n");
395 if (cdo->open == NULL || cdo->release == NULL)
397 if (!banner_printed) {
398 printk(KERN_INFO "Uniform CD-ROM driver " REVISION "\n");
400 cdrom_sysctl_register();
403 ENSURE(drive_status, CDC_DRIVE_STATUS );
404 ENSURE(media_changed, CDC_MEDIA_CHANGED);
405 ENSURE(tray_move, CDC_CLOSE_TRAY | CDC_OPEN_TRAY);
406 ENSURE(lock_door, CDC_LOCK);
407 ENSURE(select_speed, CDC_SELECT_SPEED);
408 ENSURE(get_last_session, CDC_MULTI_SESSION);
409 ENSURE(get_mcn, CDC_MCN);
410 ENSURE(reset, CDC_RESET);
411 ENSURE(audio_ioctl, CDC_PLAY_AUDIO);
412 ENSURE(generic_packet, CDC_GENERIC_PACKET);
415 cdi->options = CDO_USE_FFLAGS;
417 if (autoclose==1 && CDROM_CAN(CDC_CLOSE_TRAY))
418 cdi->options |= (int) CDO_AUTO_CLOSE;
419 if (autoeject==1 && CDROM_CAN(CDC_OPEN_TRAY))
420 cdi->options |= (int) CDO_AUTO_EJECT;
422 cdi->options |= (int) CDO_LOCK;
423 if (check_media_type==1)
424 cdi->options |= (int) CDO_CHECK_TYPE;
426 if (CDROM_CAN(CDC_MRW_W))
427 cdi->exit = cdrom_mrw_exit;
430 cdi->cdda_method = CDDA_BPC_FULL;
432 cdi->cdda_method = CDDA_OLD;
434 if (!cdo->generic_packet)
435 cdo->generic_packet = cdrom_dummy_generic_packet;
437 cdinfo(CD_REG_UNREG, "drive \"/dev/%s\" registered\n", cdi->name);
438 mutex_lock(&cdrom_mutex);
439 list_add(&cdi->list, &cdrom_list);
440 mutex_unlock(&cdrom_mutex);
445 void unregister_cdrom(struct cdrom_device_info *cdi)
447 cdinfo(CD_OPEN, "entering unregister_cdrom\n");
449 mutex_lock(&cdrom_mutex);
450 list_del(&cdi->list);
451 mutex_unlock(&cdrom_mutex);
456 cdi->ops->n_minors--;
457 cdinfo(CD_REG_UNREG, "drive \"/dev/%s\" unregistered\n", cdi->name);
460 int cdrom_get_media_event(struct cdrom_device_info *cdi,
461 struct media_event_desc *med)
463 struct packet_command cgc;
464 unsigned char buffer[8];
465 struct event_header *eh = (struct event_header *) buffer;
467 init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_READ);
468 cgc.cmd[0] = GPCMD_GET_EVENT_STATUS_NOTIFICATION;
469 cgc.cmd[1] = 1; /* IMMED */
470 cgc.cmd[4] = 1 << 4; /* media event */
471 cgc.cmd[8] = sizeof(buffer);
474 if (cdi->ops->generic_packet(cdi, &cgc))
477 if (be16_to_cpu(eh->data_len) < sizeof(*med))
480 if (eh->nea || eh->notification_class != 0x4)
483 memcpy(med, &buffer[sizeof(*eh)], sizeof(*med));
488 * the first prototypes used 0x2c as the page code for the mrw mode page,
489 * subsequently this was changed to 0x03. probe the one used by this drive
491 static int cdrom_mrw_probe_pc(struct cdrom_device_info *cdi)
493 struct packet_command cgc;
496 init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_READ);
501 if (!cdrom_mode_sense(cdi, &cgc, MRW_MODE_PC, 0)) {
502 cdi->mrw_mode_page = MRW_MODE_PC;
504 } else if (!cdrom_mode_sense(cdi, &cgc, MRW_MODE_PC_PRE1, 0)) {
505 cdi->mrw_mode_page = MRW_MODE_PC_PRE1;
512 static int cdrom_is_mrw(struct cdrom_device_info *cdi, int *write)
514 struct packet_command cgc;
515 struct mrw_feature_desc *mfd;
516 unsigned char buffer[16];
521 init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_READ);
523 cgc.cmd[0] = GPCMD_GET_CONFIGURATION;
524 cgc.cmd[3] = CDF_MRW;
525 cgc.cmd[8] = sizeof(buffer);
528 if ((ret = cdi->ops->generic_packet(cdi, &cgc)))
531 mfd = (struct mrw_feature_desc *)&buffer[sizeof(struct feature_header)];
532 if (be16_to_cpu(mfd->feature_code) != CDF_MRW)
536 if ((ret = cdrom_mrw_probe_pc(cdi))) {
544 static int cdrom_mrw_bgformat(struct cdrom_device_info *cdi, int cont)
546 struct packet_command cgc;
547 unsigned char buffer[12];
550 printk(KERN_INFO "cdrom: %sstarting format\n", cont ? "Re" : "");
553 * FmtData bit set (bit 4), format type is 1
555 init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_WRITE);
556 cgc.cmd[0] = GPCMD_FORMAT_UNIT;
557 cgc.cmd[1] = (1 << 4) | 1;
559 cgc.timeout = 5 * 60 * HZ;
562 * 4 byte format list header, 8 byte format list descriptor
575 buffer[8] = 0x24 << 2;
578 ret = cdi->ops->generic_packet(cdi, &cgc);
580 printk(KERN_INFO "cdrom: bgformat failed\n");
585 static int cdrom_mrw_bgformat_susp(struct cdrom_device_info *cdi, int immed)
587 struct packet_command cgc;
589 init_cdrom_command(&cgc, NULL, 0, CGC_DATA_NONE);
590 cgc.cmd[0] = GPCMD_CLOSE_TRACK;
593 * Session = 1, Track = 0
595 cgc.cmd[1] = !!immed;
598 cgc.timeout = 5 * 60 * HZ;
600 return cdi->ops->generic_packet(cdi, &cgc);
603 static int cdrom_flush_cache(struct cdrom_device_info *cdi)
605 struct packet_command cgc;
607 init_cdrom_command(&cgc, NULL, 0, CGC_DATA_NONE);
608 cgc.cmd[0] = GPCMD_FLUSH_CACHE;
610 cgc.timeout = 5 * 60 * HZ;
612 return cdi->ops->generic_packet(cdi, &cgc);
615 static int cdrom_mrw_exit(struct cdrom_device_info *cdi)
620 ret = cdrom_get_disc_info(cdi, &di);
621 if (ret < 0 || ret < (int)offsetof(typeof(di),disc_type))
625 if (di.mrw_status == CDM_MRW_BGFORMAT_ACTIVE) {
626 printk(KERN_INFO "cdrom: issuing MRW back ground "
628 ret = cdrom_mrw_bgformat_susp(cdi, 0);
631 if (!ret && cdi->media_written)
632 ret = cdrom_flush_cache(cdi);
637 static int cdrom_mrw_set_lba_space(struct cdrom_device_info *cdi, int space)
639 struct packet_command cgc;
640 struct mode_page_header *mph;
642 int ret, offset, size;
644 init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_READ);
647 cgc.buflen = sizeof(buffer);
649 if ((ret = cdrom_mode_sense(cdi, &cgc, cdi->mrw_mode_page, 0)))
652 mph = (struct mode_page_header *) buffer;
653 offset = be16_to_cpu(mph->desc_length);
654 size = be16_to_cpu(mph->mode_data_length) + 2;
656 buffer[offset + 3] = space;
659 if ((ret = cdrom_mode_select(cdi, &cgc)))
662 printk(KERN_INFO "cdrom: %s: mrw address space %s selected\n", cdi->name, mrw_address_space[space]);
666 static int cdrom_get_random_writable(struct cdrom_device_info *cdi,
667 struct rwrt_feature_desc *rfd)
669 struct packet_command cgc;
673 init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_READ);
675 cgc.cmd[0] = GPCMD_GET_CONFIGURATION; /* often 0x46 */
676 cgc.cmd[3] = CDF_RWRT; /* often 0x0020 */
677 cgc.cmd[8] = sizeof(buffer); /* often 0x18 */
680 if ((ret = cdi->ops->generic_packet(cdi, &cgc)))
683 memcpy(rfd, &buffer[sizeof(struct feature_header)], sizeof (*rfd));
687 static int cdrom_has_defect_mgt(struct cdrom_device_info *cdi)
689 struct packet_command cgc;
691 __be16 *feature_code;
694 init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_READ);
696 cgc.cmd[0] = GPCMD_GET_CONFIGURATION;
697 cgc.cmd[3] = CDF_HWDM;
698 cgc.cmd[8] = sizeof(buffer);
701 if ((ret = cdi->ops->generic_packet(cdi, &cgc)))
704 feature_code = (__be16 *) &buffer[sizeof(struct feature_header)];
705 if (be16_to_cpu(*feature_code) == CDF_HWDM)
712 static int cdrom_is_random_writable(struct cdrom_device_info *cdi, int *write)
714 struct rwrt_feature_desc rfd;
719 if ((ret = cdrom_get_random_writable(cdi, &rfd)))
722 if (CDF_RWRT == be16_to_cpu(rfd.feature_code))
728 static int cdrom_media_erasable(struct cdrom_device_info *cdi)
733 ret = cdrom_get_disc_info(cdi, &di);
734 if (ret < 0 || ret < offsetof(typeof(di), n_first_track))
741 * FIXME: check RO bit
743 static int cdrom_dvdram_open_write(struct cdrom_device_info *cdi)
745 int ret = cdrom_media_erasable(cdi);
748 * allow writable open if media info read worked and media is
749 * erasable, _or_ if it fails since not all drives support it
757 static int cdrom_mrw_open_write(struct cdrom_device_info *cdi)
763 * always reset to DMA lba space on open
765 if (cdrom_mrw_set_lba_space(cdi, MRW_LBA_DMA)) {
766 printk(KERN_ERR "cdrom: failed setting lba address space\n");
770 ret = cdrom_get_disc_info(cdi, &di);
771 if (ret < 0 || ret < offsetof(typeof(di),disc_type))
779 * 0 - not MRW formatted
780 * 1 - MRW bgformat started, but not running or complete
781 * 2 - MRW bgformat in progress
782 * 3 - MRW formatting complete
785 printk(KERN_INFO "cdrom open: mrw_status '%s'\n",
786 mrw_format_status[di.mrw_status]);
789 else if (di.mrw_status == CDM_MRW_BGFORMAT_INACTIVE &&
791 ret = cdrom_mrw_bgformat(cdi, 1);
796 static int mo_open_write(struct cdrom_device_info *cdi)
798 struct packet_command cgc;
802 init_cdrom_command(&cgc, &buffer, 4, CGC_DATA_READ);
806 * obtain write protect information as per
807 * drivers/scsi/sd.c:sd_read_write_protect_flag
810 ret = cdrom_mode_sense(cdi, &cgc, GPMODE_ALL_PAGES, 0);
812 ret = cdrom_mode_sense(cdi, &cgc, GPMODE_VENDOR_PAGE, 0);
815 ret = cdrom_mode_sense(cdi, &cgc, GPMODE_ALL_PAGES, 0);
818 /* drive gave us no info, let the user go ahead */
822 return buffer[3] & 0x80;
825 static int cdrom_ram_open_write(struct cdrom_device_info *cdi)
827 struct rwrt_feature_desc rfd;
830 if ((ret = cdrom_has_defect_mgt(cdi)))
833 if ((ret = cdrom_get_random_writable(cdi, &rfd)))
835 else if (CDF_RWRT == be16_to_cpu(rfd.feature_code))
838 cdinfo(CD_OPEN, "can open for random write\n");
842 static void cdrom_mmc3_profile(struct cdrom_device_info *cdi)
844 struct packet_command cgc;
846 int ret, mmc3_profile;
848 init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_READ);
850 cgc.cmd[0] = GPCMD_GET_CONFIGURATION;
852 cgc.cmd[2] = cgc.cmd[3] = 0; /* Starting Feature Number */
853 cgc.cmd[8] = sizeof(buffer); /* Allocation Length */
856 if ((ret = cdi->ops->generic_packet(cdi, &cgc)))
857 mmc3_profile = 0xffff;
859 mmc3_profile = (buffer[6] << 8) | buffer[7];
861 cdi->mmc3_profile = mmc3_profile;
864 static int cdrom_is_dvd_rw(struct cdrom_device_info *cdi)
866 switch (cdi->mmc3_profile) {
867 case 0x12: /* DVD-RAM */
868 case 0x1A: /* DVD+RW */
876 * returns 0 for ok to open write, non-0 to disallow
878 static int cdrom_open_write(struct cdrom_device_info *cdi)
880 int mrw, mrw_write, ram_write;
884 if (!cdrom_is_mrw(cdi, &mrw_write))
887 if (CDROM_CAN(CDC_MO_DRIVE))
890 (void) cdrom_is_random_writable(cdi, &ram_write);
893 cdi->mask &= ~CDC_MRW;
895 cdi->mask |= CDC_MRW;
898 cdi->mask &= ~CDC_MRW_W;
900 cdi->mask |= CDC_MRW_W;
903 cdi->mask &= ~CDC_RAM;
905 cdi->mask |= CDC_RAM;
907 if (CDROM_CAN(CDC_MRW_W))
908 ret = cdrom_mrw_open_write(cdi);
909 else if (CDROM_CAN(CDC_DVD_RAM))
910 ret = cdrom_dvdram_open_write(cdi);
911 else if (CDROM_CAN(CDC_RAM) &&
912 !CDROM_CAN(CDC_CD_R|CDC_CD_RW|CDC_DVD|CDC_DVD_R|CDC_MRW|CDC_MO_DRIVE))
913 ret = cdrom_ram_open_write(cdi);
914 else if (CDROM_CAN(CDC_MO_DRIVE))
915 ret = mo_open_write(cdi);
916 else if (!cdrom_is_dvd_rw(cdi))
922 static void cdrom_dvd_rw_close_write(struct cdrom_device_info *cdi)
924 struct packet_command cgc;
926 if (cdi->mmc3_profile != 0x1a) {
927 cdinfo(CD_CLOSE, "%s: No DVD+RW\n", cdi->name);
931 if (!cdi->media_written) {
932 cdinfo(CD_CLOSE, "%s: DVD+RW media clean\n", cdi->name);
936 printk(KERN_INFO "cdrom: %s: dirty DVD+RW media, \"finalizing\"\n",
939 init_cdrom_command(&cgc, NULL, 0, CGC_DATA_NONE);
940 cgc.cmd[0] = GPCMD_FLUSH_CACHE;
942 cdi->ops->generic_packet(cdi, &cgc);
944 init_cdrom_command(&cgc, NULL, 0, CGC_DATA_NONE);
945 cgc.cmd[0] = GPCMD_CLOSE_TRACK;
946 cgc.timeout = 3000*HZ;
948 cdi->ops->generic_packet(cdi, &cgc);
950 init_cdrom_command(&cgc, NULL, 0, CGC_DATA_NONE);
951 cgc.cmd[0] = GPCMD_CLOSE_TRACK;
952 cgc.cmd[2] = 2; /* Close session */
954 cgc.timeout = 3000*HZ;
955 cdi->ops->generic_packet(cdi, &cgc);
957 cdi->media_written = 0;
960 static int cdrom_close_write(struct cdrom_device_info *cdi)
963 return cdrom_flush_cache(cdi);
969 /* We use the open-option O_NONBLOCK to indicate that the
970 * purpose of opening is only for subsequent ioctl() calls; no device
971 * integrity checks are performed.
973 * We hope that all cd-player programs will adopt this convention. It
974 * is in their own interest: device control becomes a lot easier
977 int cdrom_open(struct cdrom_device_info *cdi, struct inode *ip, struct file *fp)
981 cdinfo(CD_OPEN, "entering cdrom_open\n");
983 /* if this was a O_NONBLOCK open and we should honor the flags,
984 * do a quick open without drive/disc integrity checks. */
986 if ((fp->f_flags & O_NONBLOCK) && (cdi->options & CDO_USE_FFLAGS)) {
987 ret = cdi->ops->open(cdi, 1);
989 ret = open_for_data(cdi);
992 cdrom_mmc3_profile(cdi);
993 if (fp->f_mode & FMODE_WRITE) {
995 if (cdrom_open_write(cdi))
997 if (!CDROM_CAN(CDC_RAM))
1000 cdi->media_written = 0;
1007 cdinfo(CD_OPEN, "Use count for \"/dev/%s\" now %d\n",
1008 cdi->name, cdi->use_count);
1009 /* Do this on open. Don't wait for mount, because they might
1010 not be mounting, but opening with O_NONBLOCK */
1011 check_disk_change(ip->i_bdev);
1014 if (CDROM_CAN(CDC_LOCK) && cdi->options & CDO_LOCK) {
1015 cdi->ops->lock_door(cdi, 0);
1016 cdinfo(CD_OPEN, "door unlocked.\n");
1018 cdi->ops->release(cdi);
1025 int open_for_data(struct cdrom_device_info * cdi)
1028 struct cdrom_device_ops *cdo = cdi->ops;
1030 cdinfo(CD_OPEN, "entering open_for_data\n");
1031 /* Check if the driver can report drive status. If it can, we
1032 can do clever things. If it can't, well, we at least tried! */
1033 if (cdo->drive_status != NULL) {
1034 ret = cdo->drive_status(cdi, CDSL_CURRENT);
1035 cdinfo(CD_OPEN, "drive_status=%d\n", ret);
1036 if (ret == CDS_TRAY_OPEN) {
1037 cdinfo(CD_OPEN, "the tray is open...\n");
1038 /* can/may i close it? */
1039 if (CDROM_CAN(CDC_CLOSE_TRAY) &&
1040 cdi->options & CDO_AUTO_CLOSE) {
1041 cdinfo(CD_OPEN, "trying to close the tray.\n");
1042 ret=cdo->tray_move(cdi,0);
1044 cdinfo(CD_OPEN, "bummer. tried to close the tray but failed.\n");
1045 /* Ignore the error from the low
1046 level driver. We don't care why it
1047 couldn't close the tray. We only care
1048 that there is no disc in the drive,
1049 since that is the _REAL_ problem here.*/
1051 goto clean_up_and_return;
1054 cdinfo(CD_OPEN, "bummer. this drive can't close the tray.\n");
1056 goto clean_up_and_return;
1058 /* Ok, the door should be closed now.. Check again */
1059 ret = cdo->drive_status(cdi, CDSL_CURRENT);
1060 if ((ret == CDS_NO_DISC) || (ret==CDS_TRAY_OPEN)) {
1061 cdinfo(CD_OPEN, "bummer. the tray is still not closed.\n");
1062 cdinfo(CD_OPEN, "tray might not contain a medium.\n");
1064 goto clean_up_and_return;
1066 cdinfo(CD_OPEN, "the tray is now closed.\n");
1068 /* the door should be closed now, check for the disc */
1069 ret = cdo->drive_status(cdi, CDSL_CURRENT);
1070 if (ret!=CDS_DISC_OK) {
1072 goto clean_up_and_return;
1075 cdrom_count_tracks(cdi, &tracks);
1076 if (tracks.error == CDS_NO_DISC) {
1077 cdinfo(CD_OPEN, "bummer. no disc.\n");
1079 goto clean_up_and_return;
1081 /* CD-Players which don't use O_NONBLOCK, workman
1082 * for example, need bit CDO_CHECK_TYPE cleared! */
1083 if (tracks.data==0) {
1084 if (cdi->options & CDO_CHECK_TYPE) {
1085 /* give people a warning shot, now that CDO_CHECK_TYPE
1086 is the default case! */
1087 cdinfo(CD_OPEN, "bummer. wrong media type.\n");
1088 cdinfo(CD_WARNING, "pid %d must open device O_NONBLOCK!\n",
1089 (unsigned int)task_pid_nr(current));
1091 goto clean_up_and_return;
1094 cdinfo(CD_OPEN, "wrong media type, but CDO_CHECK_TYPE not set.\n");
1098 cdinfo(CD_OPEN, "all seems well, opening the device.\n");
1100 /* all seems well, we can open the device */
1101 ret = cdo->open(cdi, 0); /* open for data */
1102 cdinfo(CD_OPEN, "opening the device gave me %d.\n", ret);
1103 /* After all this careful checking, we shouldn't have problems
1104 opening the device, but we don't want the device locked if
1105 this somehow fails... */
1107 cdinfo(CD_OPEN, "open device failed.\n");
1108 goto clean_up_and_return;
1110 if (CDROM_CAN(CDC_LOCK) && (cdi->options & CDO_LOCK)) {
1111 cdo->lock_door(cdi, 1);
1112 cdinfo(CD_OPEN, "door locked.\n");
1114 cdinfo(CD_OPEN, "device opened successfully.\n");
1117 /* Something failed. Try to unlock the drive, because some drivers
1118 (notably ide-cd) lock the drive after every command. This produced
1119 a nasty bug where after mount failed, the drive would remain locked!
1120 This ensures that the drive gets unlocked after a mount fails. This
1121 is a goto to avoid bloating the driver with redundant code. */
1122 clean_up_and_return:
1123 cdinfo(CD_OPEN, "open failed.\n");
1124 if (CDROM_CAN(CDC_LOCK) && cdi->options & CDO_LOCK) {
1125 cdo->lock_door(cdi, 0);
1126 cdinfo(CD_OPEN, "door unlocked.\n");
1131 /* This code is similar to that in open_for_data. The routine is called
1132 whenever an audio play operation is requested.
1134 static int check_for_audio_disc(struct cdrom_device_info * cdi,
1135 struct cdrom_device_ops * cdo)
1139 cdinfo(CD_OPEN, "entering check_for_audio_disc\n");
1140 if (!(cdi->options & CDO_CHECK_TYPE))
1142 if (cdo->drive_status != NULL) {
1143 ret = cdo->drive_status(cdi, CDSL_CURRENT);
1144 cdinfo(CD_OPEN, "drive_status=%d\n", ret);
1145 if (ret == CDS_TRAY_OPEN) {
1146 cdinfo(CD_OPEN, "the tray is open...\n");
1147 /* can/may i close it? */
1148 if (CDROM_CAN(CDC_CLOSE_TRAY) &&
1149 cdi->options & CDO_AUTO_CLOSE) {
1150 cdinfo(CD_OPEN, "trying to close the tray.\n");
1151 ret=cdo->tray_move(cdi,0);
1153 cdinfo(CD_OPEN, "bummer. tried to close tray but failed.\n");
1154 /* Ignore the error from the low
1155 level driver. We don't care why it
1156 couldn't close the tray. We only care
1157 that there is no disc in the drive,
1158 since that is the _REAL_ problem here.*/
1162 cdinfo(CD_OPEN, "bummer. this driver can't close the tray.\n");
1165 /* Ok, the door should be closed now.. Check again */
1166 ret = cdo->drive_status(cdi, CDSL_CURRENT);
1167 if ((ret == CDS_NO_DISC) || (ret==CDS_TRAY_OPEN)) {
1168 cdinfo(CD_OPEN, "bummer. the tray is still not closed.\n");
1171 if (ret!=CDS_DISC_OK) {
1172 cdinfo(CD_OPEN, "bummer. disc isn't ready.\n");
1175 cdinfo(CD_OPEN, "the tray is now closed.\n");
1178 cdrom_count_tracks(cdi, &tracks);
1180 return(tracks.error);
1182 if (tracks.audio==0)
1183 return -EMEDIUMTYPE;
1188 int cdrom_release(struct cdrom_device_info *cdi, struct file *fp)
1190 struct cdrom_device_ops *cdo = cdi->ops;
1191 int opened_for_data;
1193 cdinfo(CD_CLOSE, "entering cdrom_release\n");
1195 if (cdi->use_count > 0)
1198 if (cdi->use_count == 0) {
1199 cdinfo(CD_CLOSE, "Use count for \"/dev/%s\" now zero\n", cdi->name);
1200 cdrom_dvd_rw_close_write(cdi);
1202 if ((cdo->capability & CDC_LOCK) && !keeplocked) {
1203 cdinfo(CD_CLOSE, "Unlocking door!\n");
1204 cdo->lock_door(cdi, 0);
1208 opened_for_data = !(cdi->options & CDO_USE_FFLAGS) ||
1209 !(fp && fp->f_flags & O_NONBLOCK);
1212 * flush cache on last write release
1214 if (CDROM_CAN(CDC_RAM) && !cdi->use_count && cdi->for_data)
1215 cdrom_close_write(cdi);
1218 if (cdi->use_count == 0) { /* last process that closes dev*/
1219 if (opened_for_data &&
1220 cdi->options & CDO_AUTO_EJECT && CDROM_CAN(CDC_OPEN_TRAY))
1221 cdo->tray_move(cdi, 1);
1226 static int cdrom_read_mech_status(struct cdrom_device_info *cdi,
1227 struct cdrom_changer_info *buf)
1229 struct packet_command cgc;
1230 struct cdrom_device_ops *cdo = cdi->ops;
1234 * Sanyo changer isn't spec compliant (doesn't use regular change
1235 * LOAD_UNLOAD command, and it doesn't implement the mech status
1238 if (cdi->sanyo_slot) {
1239 buf->hdr.nslots = 3;
1240 buf->hdr.curslot = cdi->sanyo_slot == 3 ? 0 : cdi->sanyo_slot;
1241 for (length = 0; length < 3; length++) {
1242 buf->slots[length].disc_present = 1;
1243 buf->slots[length].change = 0;
1248 length = sizeof(struct cdrom_mechstat_header) +
1249 cdi->capacity * sizeof(struct cdrom_slot);
1251 init_cdrom_command(&cgc, buf, length, CGC_DATA_READ);
1252 cgc.cmd[0] = GPCMD_MECHANISM_STATUS;
1253 cgc.cmd[8] = (length >> 8) & 0xff;
1254 cgc.cmd[9] = length & 0xff;
1255 return cdo->generic_packet(cdi, &cgc);
1258 static int cdrom_slot_status(struct cdrom_device_info *cdi, int slot)
1260 struct cdrom_changer_info *info;
1263 cdinfo(CD_CHANGER, "entering cdrom_slot_status()\n");
1264 if (cdi->sanyo_slot)
1267 info = kmalloc(sizeof(*info), GFP_KERNEL);
1271 if ((ret = cdrom_read_mech_status(cdi, info)))
1274 if (info->slots[slot].disc_present)
1284 /* Return the number of slots for an ATAPI/SCSI cdrom,
1285 * return 1 if not a changer.
1287 int cdrom_number_of_slots(struct cdrom_device_info *cdi)
1291 struct cdrom_changer_info *info;
1293 cdinfo(CD_CHANGER, "entering cdrom_number_of_slots()\n");
1294 /* cdrom_read_mech_status requires a valid value for capacity: */
1297 info = kmalloc(sizeof(*info), GFP_KERNEL);
1301 if ((status = cdrom_read_mech_status(cdi, info)) == 0)
1302 nslots = info->hdr.nslots;
1309 /* If SLOT < 0, unload the current slot. Otherwise, try to load SLOT. */
1310 static int cdrom_load_unload(struct cdrom_device_info *cdi, int slot)
1312 struct packet_command cgc;
1314 cdinfo(CD_CHANGER, "entering cdrom_load_unload()\n");
1315 if (cdi->sanyo_slot && slot < 0)
1318 init_cdrom_command(&cgc, NULL, 0, CGC_DATA_NONE);
1319 cgc.cmd[0] = GPCMD_LOAD_UNLOAD;
1320 cgc.cmd[4] = 2 + (slot >= 0);
1322 cgc.timeout = 60 * HZ;
1324 /* The Sanyo 3 CD changer uses byte 7 of the
1325 GPCMD_TEST_UNIT_READY to command to switch CDs instead of
1326 using the GPCMD_LOAD_UNLOAD opcode. */
1327 if (cdi->sanyo_slot && -1 < slot) {
1328 cgc.cmd[0] = GPCMD_TEST_UNIT_READY;
1330 cgc.cmd[4] = cgc.cmd[8] = 0;
1331 cdi->sanyo_slot = slot ? slot : 3;
1334 return cdi->ops->generic_packet(cdi, &cgc);
1337 static int cdrom_select_disc(struct cdrom_device_info *cdi, int slot)
1339 struct cdrom_changer_info *info;
1343 cdinfo(CD_CHANGER, "entering cdrom_select_disc()\n");
1344 if (!CDROM_CAN(CDC_SELECT_DISC))
1345 return -EDRIVE_CANT_DO_THIS;
1347 (void) cdi->ops->media_changed(cdi, slot);
1349 if (slot == CDSL_NONE) {
1350 /* set media changed bits, on both queues */
1351 cdi->mc_flags = 0x3;
1352 return cdrom_load_unload(cdi, -1);
1355 info = kmalloc(sizeof(*info), GFP_KERNEL);
1359 if ((ret = cdrom_read_mech_status(cdi, info))) {
1364 curslot = info->hdr.curslot;
1367 if (cdi->use_count > 1 || keeplocked) {
1368 if (slot == CDSL_CURRENT) {
1375 /* Specifying CDSL_CURRENT will attempt to load the currnet slot,
1376 which is useful if it had been previously unloaded.
1377 Whether it can or not, it returns the current slot.
1378 Similarly, if slot happens to be the current one, we still
1380 if (slot == CDSL_CURRENT)
1383 /* set media changed bits on both queues */
1384 cdi->mc_flags = 0x3;
1385 if ((ret = cdrom_load_unload(cdi, slot)))
1391 /* We want to make media_changed accessible to the user through an
1392 * ioctl. The main problem now is that we must double-buffer the
1393 * low-level implementation, to assure that the VFS and the user both
1394 * see a medium change once.
1398 int media_changed(struct cdrom_device_info *cdi, int queue)
1400 unsigned int mask = (1 << (queue & 1));
1401 int ret = !!(cdi->mc_flags & mask);
1403 if (!CDROM_CAN(CDC_MEDIA_CHANGED))
1405 /* changed since last call? */
1406 if (cdi->ops->media_changed(cdi, CDSL_CURRENT)) {
1407 cdi->mc_flags = 0x3; /* set bit on both queues */
1409 cdi->media_written = 0;
1411 cdi->mc_flags &= ~mask; /* clear bit */
1415 int cdrom_media_changed(struct cdrom_device_info *cdi)
1417 /* This talks to the VFS, which doesn't like errors - just 1 or 0.
1418 * Returning "0" is always safe (media hasn't been changed). Do that
1419 * if the low-level cdrom driver dosn't support media changed. */
1420 if (cdi == NULL || cdi->ops->media_changed == NULL)
1422 if (!CDROM_CAN(CDC_MEDIA_CHANGED))
1424 return media_changed(cdi, 0);
1427 /* badly broken, I know. Is due for a fixup anytime. */
1428 static void cdrom_count_tracks(struct cdrom_device_info *cdi, tracktype* tracks)
1430 struct cdrom_tochdr header;
1431 struct cdrom_tocentry entry;
1438 cdinfo(CD_COUNT_TRACKS, "entering cdrom_count_tracks\n");
1439 if (!CDROM_CAN(CDC_PLAY_AUDIO)) {
1440 tracks->error=CDS_NO_INFO;
1443 /* Grab the TOC header so we can see how many tracks there are */
1444 if ((ret = cdi->ops->audio_ioctl(cdi, CDROMREADTOCHDR, &header))) {
1445 if (ret == -ENOMEDIUM)
1446 tracks->error = CDS_NO_DISC;
1448 tracks->error = CDS_NO_INFO;
1451 /* check what type of tracks are on this disc */
1452 entry.cdte_format = CDROM_MSF;
1453 for (i = header.cdth_trk0; i <= header.cdth_trk1; i++) {
1454 entry.cdte_track = i;
1455 if (cdi->ops->audio_ioctl(cdi, CDROMREADTOCENTRY, &entry)) {
1456 tracks->error=CDS_NO_INFO;
1459 if (entry.cdte_ctrl & CDROM_DATA_TRACK) {
1460 if (entry.cdte_format == 0x10)
1462 else if (entry.cdte_format == 0x20)
1468 cdinfo(CD_COUNT_TRACKS, "track %d: format=%d, ctrl=%d\n",
1469 i, entry.cdte_format, entry.cdte_ctrl);
1471 cdinfo(CD_COUNT_TRACKS, "disc has %d tracks: %d=audio %d=data %d=Cd-I %d=XA\n",
1472 header.cdth_trk1, tracks->audio, tracks->data,
1473 tracks->cdi, tracks->xa);
1476 /* Requests to the low-level drivers will /always/ be done in the
1477 following format convention:
1479 CDROM_LBA: all data-related requests.
1480 CDROM_MSF: all audio-related requests.
1482 However, a low-level implementation is allowed to refuse this
1483 request, and return information in its own favorite format.
1485 It doesn't make sense /at all/ to ask for a play_audio in LBA
1486 format, or ask for multi-session info in MSF format. However, for
1487 backward compatibility these format requests will be satisfied, but
1488 the requests to the low-level drivers will be sanitized in the more
1489 meaningful format indicated above.
1493 void sanitize_format(union cdrom_addr *addr,
1494 u_char * curr, u_char requested)
1496 if (*curr == requested)
1497 return; /* nothing to be done! */
1498 if (requested == CDROM_LBA) {
1499 addr->lba = (int) addr->msf.frame +
1500 75 * (addr->msf.second - 2 + 60 * addr->msf.minute);
1501 } else { /* CDROM_MSF */
1502 int lba = addr->lba;
1503 addr->msf.frame = lba % 75;
1506 addr->msf.second = lba % 60;
1507 addr->msf.minute = lba / 60;
1512 void init_cdrom_command(struct packet_command *cgc, void *buf, int len,
1515 memset(cgc, 0, sizeof(struct packet_command));
1517 memset(buf, 0, len);
1518 cgc->buffer = (char *) buf;
1520 cgc->data_direction = type;
1521 cgc->timeout = CDROM_DEF_TIMEOUT;
1526 #define copy_key(dest,src) memcpy((dest), (src), sizeof(dvd_key))
1527 #define copy_chal(dest,src) memcpy((dest), (src), sizeof(dvd_challenge))
1529 static void setup_report_key(struct packet_command *cgc, unsigned agid, unsigned type)
1531 cgc->cmd[0] = GPCMD_REPORT_KEY;
1532 cgc->cmd[10] = type | (agid << 6);
1534 case 0: case 8: case 5: {
1547 cgc->cmd[9] = cgc->buflen;
1548 cgc->data_direction = CGC_DATA_READ;
1551 static void setup_send_key(struct packet_command *cgc, unsigned agid, unsigned type)
1553 cgc->cmd[0] = GPCMD_SEND_KEY;
1554 cgc->cmd[10] = type | (agid << 6);
1569 cgc->cmd[9] = cgc->buflen;
1570 cgc->data_direction = CGC_DATA_WRITE;
1573 static int dvd_do_auth(struct cdrom_device_info *cdi, dvd_authinfo *ai)
1577 struct packet_command cgc;
1578 struct cdrom_device_ops *cdo = cdi->ops;
1579 rpc_state_t rpc_state;
1581 memset(buf, 0, sizeof(buf));
1582 init_cdrom_command(&cgc, buf, 0, CGC_DATA_READ);
1586 case DVD_LU_SEND_AGID:
1587 cdinfo(CD_DVD, "entering DVD_LU_SEND_AGID\n");
1589 setup_report_key(&cgc, ai->lsa.agid, 0);
1591 if ((ret = cdo->generic_packet(cdi, &cgc)))
1594 ai->lsa.agid = buf[7] >> 6;
1595 /* Returning data, let host change state */
1598 case DVD_LU_SEND_KEY1:
1599 cdinfo(CD_DVD, "entering DVD_LU_SEND_KEY1\n");
1600 setup_report_key(&cgc, ai->lsk.agid, 2);
1602 if ((ret = cdo->generic_packet(cdi, &cgc)))
1605 copy_key(ai->lsk.key, &buf[4]);
1606 /* Returning data, let host change state */
1609 case DVD_LU_SEND_CHALLENGE:
1610 cdinfo(CD_DVD, "entering DVD_LU_SEND_CHALLENGE\n");
1611 setup_report_key(&cgc, ai->lsc.agid, 1);
1613 if ((ret = cdo->generic_packet(cdi, &cgc)))
1616 copy_chal(ai->lsc.chal, &buf[4]);
1617 /* Returning data, let host change state */
1621 case DVD_LU_SEND_TITLE_KEY:
1622 cdinfo(CD_DVD, "entering DVD_LU_SEND_TITLE_KEY\n");
1624 setup_report_key(&cgc, ai->lstk.agid, 4);
1625 cgc.cmd[5] = ai->lstk.lba;
1626 cgc.cmd[4] = ai->lstk.lba >> 8;
1627 cgc.cmd[3] = ai->lstk.lba >> 16;
1628 cgc.cmd[2] = ai->lstk.lba >> 24;
1630 if ((ret = cdo->generic_packet(cdi, &cgc)))
1633 ai->lstk.cpm = (buf[4] >> 7) & 1;
1634 ai->lstk.cp_sec = (buf[4] >> 6) & 1;
1635 ai->lstk.cgms = (buf[4] >> 4) & 3;
1636 copy_key(ai->lstk.title_key, &buf[5]);
1637 /* Returning data, let host change state */
1640 case DVD_LU_SEND_ASF:
1641 cdinfo(CD_DVD, "entering DVD_LU_SEND_ASF\n");
1642 setup_report_key(&cgc, ai->lsasf.agid, 5);
1644 if ((ret = cdo->generic_packet(cdi, &cgc)))
1647 ai->lsasf.asf = buf[7] & 1;
1650 /* LU data receive (LU changes state) */
1651 case DVD_HOST_SEND_CHALLENGE:
1652 cdinfo(CD_DVD, "entering DVD_HOST_SEND_CHALLENGE\n");
1653 setup_send_key(&cgc, ai->hsc.agid, 1);
1655 copy_chal(&buf[4], ai->hsc.chal);
1657 if ((ret = cdo->generic_packet(cdi, &cgc)))
1660 ai->type = DVD_LU_SEND_KEY1;
1663 case DVD_HOST_SEND_KEY2:
1664 cdinfo(CD_DVD, "entering DVD_HOST_SEND_KEY2\n");
1665 setup_send_key(&cgc, ai->hsk.agid, 3);
1667 copy_key(&buf[4], ai->hsk.key);
1669 if ((ret = cdo->generic_packet(cdi, &cgc))) {
1670 ai->type = DVD_AUTH_FAILURE;
1673 ai->type = DVD_AUTH_ESTABLISHED;
1677 case DVD_INVALIDATE_AGID:
1679 cdinfo(CD_DVD, "entering DVD_INVALIDATE_AGID\n");
1680 setup_report_key(&cgc, ai->lsa.agid, 0x3f);
1681 if ((ret = cdo->generic_packet(cdi, &cgc)))
1685 /* Get region settings */
1686 case DVD_LU_SEND_RPC_STATE:
1687 cdinfo(CD_DVD, "entering DVD_LU_SEND_RPC_STATE\n");
1688 setup_report_key(&cgc, 0, 8);
1689 memset(&rpc_state, 0, sizeof(rpc_state_t));
1690 cgc.buffer = (char *) &rpc_state;
1692 if ((ret = cdo->generic_packet(cdi, &cgc)))
1695 ai->lrpcs.type = rpc_state.type_code;
1696 ai->lrpcs.vra = rpc_state.vra;
1697 ai->lrpcs.ucca = rpc_state.ucca;
1698 ai->lrpcs.region_mask = rpc_state.region_mask;
1699 ai->lrpcs.rpc_scheme = rpc_state.rpc_scheme;
1702 /* Set region settings */
1703 case DVD_HOST_SEND_RPC_STATE:
1704 cdinfo(CD_DVD, "entering DVD_HOST_SEND_RPC_STATE\n");
1705 setup_send_key(&cgc, 0, 6);
1707 buf[4] = ai->hrpcs.pdrc;
1709 if ((ret = cdo->generic_packet(cdi, &cgc)))
1714 cdinfo(CD_WARNING, "Invalid DVD key ioctl (%d)\n", ai->type);
1721 static int dvd_read_physical(struct cdrom_device_info *cdi, dvd_struct *s)
1723 unsigned char buf[21], *base;
1724 struct dvd_layer *layer;
1725 struct packet_command cgc;
1726 struct cdrom_device_ops *cdo = cdi->ops;
1727 int ret, layer_num = s->physical.layer_num;
1729 if (layer_num >= DVD_LAYERS)
1732 init_cdrom_command(&cgc, buf, sizeof(buf), CGC_DATA_READ);
1733 cgc.cmd[0] = GPCMD_READ_DVD_STRUCTURE;
1734 cgc.cmd[6] = layer_num;
1735 cgc.cmd[7] = s->type;
1736 cgc.cmd[9] = cgc.buflen & 0xff;
1739 * refrain from reporting errors on non-existing layers (mainly)
1743 if ((ret = cdo->generic_packet(cdi, &cgc)))
1747 layer = &s->physical.layer[layer_num];
1750 * place the data... really ugly, but at least we won't have to
1751 * worry about endianess in userspace.
1753 memset(layer, 0, sizeof(*layer));
1754 layer->book_version = base[0] & 0xf;
1755 layer->book_type = base[0] >> 4;
1756 layer->min_rate = base[1] & 0xf;
1757 layer->disc_size = base[1] >> 4;
1758 layer->layer_type = base[2] & 0xf;
1759 layer->track_path = (base[2] >> 4) & 1;
1760 layer->nlayers = (base[2] >> 5) & 3;
1761 layer->track_density = base[3] & 0xf;
1762 layer->linear_density = base[3] >> 4;
1763 layer->start_sector = base[5] << 16 | base[6] << 8 | base[7];
1764 layer->end_sector = base[9] << 16 | base[10] << 8 | base[11];
1765 layer->end_sector_l0 = base[13] << 16 | base[14] << 8 | base[15];
1766 layer->bca = base[16] >> 7;
1771 static int dvd_read_copyright(struct cdrom_device_info *cdi, dvd_struct *s)
1775 struct packet_command cgc;
1776 struct cdrom_device_ops *cdo = cdi->ops;
1778 init_cdrom_command(&cgc, buf, sizeof(buf), CGC_DATA_READ);
1779 cgc.cmd[0] = GPCMD_READ_DVD_STRUCTURE;
1780 cgc.cmd[6] = s->copyright.layer_num;
1781 cgc.cmd[7] = s->type;
1782 cgc.cmd[8] = cgc.buflen >> 8;
1783 cgc.cmd[9] = cgc.buflen & 0xff;
1785 if ((ret = cdo->generic_packet(cdi, &cgc)))
1788 s->copyright.cpst = buf[4];
1789 s->copyright.rmi = buf[5];
1794 static int dvd_read_disckey(struct cdrom_device_info *cdi, dvd_struct *s)
1798 struct packet_command cgc;
1799 struct cdrom_device_ops *cdo = cdi->ops;
1801 size = sizeof(s->disckey.value) + 4;
1803 if ((buf = kmalloc(size, GFP_KERNEL)) == NULL)
1806 init_cdrom_command(&cgc, buf, size, CGC_DATA_READ);
1807 cgc.cmd[0] = GPCMD_READ_DVD_STRUCTURE;
1808 cgc.cmd[7] = s->type;
1809 cgc.cmd[8] = size >> 8;
1810 cgc.cmd[9] = size & 0xff;
1811 cgc.cmd[10] = s->disckey.agid << 6;
1813 if (!(ret = cdo->generic_packet(cdi, &cgc)))
1814 memcpy(s->disckey.value, &buf[4], sizeof(s->disckey.value));
1820 static int dvd_read_bca(struct cdrom_device_info *cdi, dvd_struct *s)
1823 u_char buf[4 + 188];
1824 struct packet_command cgc;
1825 struct cdrom_device_ops *cdo = cdi->ops;
1827 init_cdrom_command(&cgc, buf, sizeof(buf), CGC_DATA_READ);
1828 cgc.cmd[0] = GPCMD_READ_DVD_STRUCTURE;
1829 cgc.cmd[7] = s->type;
1830 cgc.cmd[9] = cgc.buflen & 0xff;
1832 if ((ret = cdo->generic_packet(cdi, &cgc)))
1835 s->bca.len = buf[0] << 8 | buf[1];
1836 if (s->bca.len < 12 || s->bca.len > 188) {
1837 cdinfo(CD_WARNING, "Received invalid BCA length (%d)\n", s->bca.len);
1840 memcpy(s->bca.value, &buf[4], s->bca.len);
1845 static int dvd_read_manufact(struct cdrom_device_info *cdi, dvd_struct *s)
1849 struct packet_command cgc;
1850 struct cdrom_device_ops *cdo = cdi->ops;
1852 size = sizeof(s->manufact.value) + 4;
1854 if ((buf = kmalloc(size, GFP_KERNEL)) == NULL)
1857 init_cdrom_command(&cgc, buf, size, CGC_DATA_READ);
1858 cgc.cmd[0] = GPCMD_READ_DVD_STRUCTURE;
1859 cgc.cmd[7] = s->type;
1860 cgc.cmd[8] = size >> 8;
1861 cgc.cmd[9] = size & 0xff;
1863 if ((ret = cdo->generic_packet(cdi, &cgc))) {
1868 s->manufact.len = buf[0] << 8 | buf[1];
1869 if (s->manufact.len < 0 || s->manufact.len > 2048) {
1870 cdinfo(CD_WARNING, "Received invalid manufacture info length"
1871 " (%d)\n", s->manufact.len);
1874 memcpy(s->manufact.value, &buf[4], s->manufact.len);
1881 static int dvd_read_struct(struct cdrom_device_info *cdi, dvd_struct *s)
1884 case DVD_STRUCT_PHYSICAL:
1885 return dvd_read_physical(cdi, s);
1887 case DVD_STRUCT_COPYRIGHT:
1888 return dvd_read_copyright(cdi, s);
1890 case DVD_STRUCT_DISCKEY:
1891 return dvd_read_disckey(cdi, s);
1893 case DVD_STRUCT_BCA:
1894 return dvd_read_bca(cdi, s);
1896 case DVD_STRUCT_MANUFACT:
1897 return dvd_read_manufact(cdi, s);
1900 cdinfo(CD_WARNING, ": Invalid DVD structure read requested (%d)\n",
1906 int cdrom_mode_sense(struct cdrom_device_info *cdi,
1907 struct packet_command *cgc,
1908 int page_code, int page_control)
1910 struct cdrom_device_ops *cdo = cdi->ops;
1912 memset(cgc->cmd, 0, sizeof(cgc->cmd));
1914 cgc->cmd[0] = GPCMD_MODE_SENSE_10;
1915 cgc->cmd[2] = page_code | (page_control << 6);
1916 cgc->cmd[7] = cgc->buflen >> 8;
1917 cgc->cmd[8] = cgc->buflen & 0xff;
1918 cgc->data_direction = CGC_DATA_READ;
1919 return cdo->generic_packet(cdi, cgc);
1922 int cdrom_mode_select(struct cdrom_device_info *cdi,
1923 struct packet_command *cgc)
1925 struct cdrom_device_ops *cdo = cdi->ops;
1927 memset(cgc->cmd, 0, sizeof(cgc->cmd));
1928 memset(cgc->buffer, 0, 2);
1929 cgc->cmd[0] = GPCMD_MODE_SELECT_10;
1930 cgc->cmd[1] = 0x10; /* PF */
1931 cgc->cmd[7] = cgc->buflen >> 8;
1932 cgc->cmd[8] = cgc->buflen & 0xff;
1933 cgc->data_direction = CGC_DATA_WRITE;
1934 return cdo->generic_packet(cdi, cgc);
1937 static int cdrom_read_subchannel(struct cdrom_device_info *cdi,
1938 struct cdrom_subchnl *subchnl, int mcn)
1940 struct cdrom_device_ops *cdo = cdi->ops;
1941 struct packet_command cgc;
1945 init_cdrom_command(&cgc, buffer, 16, CGC_DATA_READ);
1946 cgc.cmd[0] = GPCMD_READ_SUBCHANNEL;
1947 cgc.cmd[1] = 2; /* MSF addressing */
1948 cgc.cmd[2] = 0x40; /* request subQ data */
1949 cgc.cmd[3] = mcn ? 2 : 1;
1952 if ((ret = cdo->generic_packet(cdi, &cgc)))
1955 subchnl->cdsc_audiostatus = cgc.buffer[1];
1956 subchnl->cdsc_format = CDROM_MSF;
1957 subchnl->cdsc_ctrl = cgc.buffer[5] & 0xf;
1958 subchnl->cdsc_trk = cgc.buffer[6];
1959 subchnl->cdsc_ind = cgc.buffer[7];
1961 subchnl->cdsc_reladdr.msf.minute = cgc.buffer[13];
1962 subchnl->cdsc_reladdr.msf.second = cgc.buffer[14];
1963 subchnl->cdsc_reladdr.msf.frame = cgc.buffer[15];
1964 subchnl->cdsc_absaddr.msf.minute = cgc.buffer[9];
1965 subchnl->cdsc_absaddr.msf.second = cgc.buffer[10];
1966 subchnl->cdsc_absaddr.msf.frame = cgc.buffer[11];
1972 * Specific READ_10 interface
1974 static int cdrom_read_cd(struct cdrom_device_info *cdi,
1975 struct packet_command *cgc, int lba,
1976 int blocksize, int nblocks)
1978 struct cdrom_device_ops *cdo = cdi->ops;
1980 memset(&cgc->cmd, 0, sizeof(cgc->cmd));
1981 cgc->cmd[0] = GPCMD_READ_10;
1982 cgc->cmd[2] = (lba >> 24) & 0xff;
1983 cgc->cmd[3] = (lba >> 16) & 0xff;
1984 cgc->cmd[4] = (lba >> 8) & 0xff;
1985 cgc->cmd[5] = lba & 0xff;
1986 cgc->cmd[6] = (nblocks >> 16) & 0xff;
1987 cgc->cmd[7] = (nblocks >> 8) & 0xff;
1988 cgc->cmd[8] = nblocks & 0xff;
1989 cgc->buflen = blocksize * nblocks;
1990 return cdo->generic_packet(cdi, cgc);
1993 /* very generic interface for reading the various types of blocks */
1994 static int cdrom_read_block(struct cdrom_device_info *cdi,
1995 struct packet_command *cgc,
1996 int lba, int nblocks, int format, int blksize)
1998 struct cdrom_device_ops *cdo = cdi->ops;
2000 memset(&cgc->cmd, 0, sizeof(cgc->cmd));
2001 cgc->cmd[0] = GPCMD_READ_CD;
2002 /* expected sector size - cdda,mode1,etc. */
2003 cgc->cmd[1] = format << 2;
2004 /* starting address */
2005 cgc->cmd[2] = (lba >> 24) & 0xff;
2006 cgc->cmd[3] = (lba >> 16) & 0xff;
2007 cgc->cmd[4] = (lba >> 8) & 0xff;
2008 cgc->cmd[5] = lba & 0xff;
2009 /* number of blocks */
2010 cgc->cmd[6] = (nblocks >> 16) & 0xff;
2011 cgc->cmd[7] = (nblocks >> 8) & 0xff;
2012 cgc->cmd[8] = nblocks & 0xff;
2013 cgc->buflen = blksize * nblocks;
2015 /* set the header info returned */
2017 case CD_FRAMESIZE_RAW0 : cgc->cmd[9] = 0x58; break;
2018 case CD_FRAMESIZE_RAW1 : cgc->cmd[9] = 0x78; break;
2019 case CD_FRAMESIZE_RAW : cgc->cmd[9] = 0xf8; break;
2020 default : cgc->cmd[9] = 0x10;
2023 return cdo->generic_packet(cdi, cgc);
2026 static int cdrom_read_cdda_old(struct cdrom_device_info *cdi, __u8 __user *ubuf,
2027 int lba, int nframes)
2029 struct packet_command cgc;
2033 cdi->last_sense = 0;
2035 memset(&cgc, 0, sizeof(cgc));
2038 * start with will ra.nframes size, back down if alloc fails
2042 cgc.buffer = kmalloc(CD_FRAMESIZE_RAW * nr, GFP_KERNEL);
2052 if (!access_ok(VERIFY_WRITE, ubuf, nframes * CD_FRAMESIZE_RAW)) {
2057 cgc.data_direction = CGC_DATA_READ;
2058 while (nframes > 0) {
2062 ret = cdrom_read_block(cdi, &cgc, lba, nr, 1, CD_FRAMESIZE_RAW);
2065 if (__copy_to_user(ubuf, cgc.buffer, CD_FRAMESIZE_RAW * nr)) {
2069 ubuf += CD_FRAMESIZE_RAW * nr;
2078 static int cdrom_read_cdda_bpc(struct cdrom_device_info *cdi, __u8 __user *ubuf,
2079 int lba, int nframes)
2081 struct request_queue *q = cdi->disk->queue;
2090 rq = blk_get_request(q, READ, GFP_KERNEL);
2094 cdi->last_sense = 0;
2098 if (cdi->cdda_method == CDDA_BPC_SINGLE)
2100 if (nr * CD_FRAMESIZE_RAW > (q->max_sectors << 9))
2101 nr = (q->max_sectors << 9) / CD_FRAMESIZE_RAW;
2103 len = nr * CD_FRAMESIZE_RAW;
2105 ret = blk_rq_map_user(q, rq, ubuf, len);
2109 memset(rq->cmd, 0, sizeof(rq->cmd));
2110 rq->cmd[0] = GPCMD_READ_CD;
2111 rq->cmd[1] = 1 << 2;
2112 rq->cmd[2] = (lba >> 24) & 0xff;
2113 rq->cmd[3] = (lba >> 16) & 0xff;
2114 rq->cmd[4] = (lba >> 8) & 0xff;
2115 rq->cmd[5] = lba & 0xff;
2116 rq->cmd[6] = (nr >> 16) & 0xff;
2117 rq->cmd[7] = (nr >> 8) & 0xff;
2118 rq->cmd[8] = nr & 0xff;
2122 rq->cmd_type = REQ_TYPE_BLOCK_PC;
2123 rq->timeout = 60 * HZ;
2126 if (blk_execute_rq(q, cdi->disk, rq, 0)) {
2127 struct request_sense *s = rq->sense;
2129 cdi->last_sense = s->sense_key;
2132 if (blk_rq_unmap_user(bio))
2143 blk_put_request(rq);
2147 static int cdrom_read_cdda(struct cdrom_device_info *cdi, __u8 __user *ubuf,
2148 int lba, int nframes)
2152 if (cdi->cdda_method == CDDA_OLD)
2153 return cdrom_read_cdda_old(cdi, ubuf, lba, nframes);
2157 * for anything else than success and io error, we need to retry
2159 ret = cdrom_read_cdda_bpc(cdi, ubuf, lba, nframes);
2160 if (!ret || ret != -EIO)
2164 * I've seen drives get sense 4/8/3 udma crc errors on multi
2165 * frame dma, so drop to single frame dma if we need to
2167 if (cdi->cdda_method == CDDA_BPC_FULL && nframes > 1) {
2168 printk("cdrom: dropping to single frame dma\n");
2169 cdi->cdda_method = CDDA_BPC_SINGLE;
2174 * so we have an io error of some sort with multi frame dma. if the
2175 * condition wasn't a hardware error
2176 * problems, not for any error
2178 if (cdi->last_sense != 0x04 && cdi->last_sense != 0x0b)
2181 printk("cdrom: dropping to old style cdda (sense=%x)\n", cdi->last_sense);
2182 cdi->cdda_method = CDDA_OLD;
2183 return cdrom_read_cdda_old(cdi, ubuf, lba, nframes);
2186 static int cdrom_ioctl_multisession(struct cdrom_device_info *cdi,
2189 struct cdrom_multisession ms_info;
2190 u8 requested_format;
2193 cdinfo(CD_DO_IOCTL, "entering CDROMMULTISESSION\n");
2195 if (!(cdi->ops->capability & CDC_MULTI_SESSION))
2198 if (copy_from_user(&ms_info, argp, sizeof(ms_info)))
2201 requested_format = ms_info.addr_format;
2202 if (requested_format != CDROM_MSF && requested_format != CDROM_LBA)
2204 ms_info.addr_format = CDROM_LBA;
2206 ret = cdi->ops->get_last_session(cdi, &ms_info);
2210 sanitize_format(&ms_info.addr, &ms_info.addr_format, requested_format);
2212 if (copy_to_user(argp, &ms_info, sizeof(ms_info)))
2215 cdinfo(CD_DO_IOCTL, "CDROMMULTISESSION successful\n");
2219 static int cdrom_ioctl_eject(struct cdrom_device_info *cdi)
2221 cdinfo(CD_DO_IOCTL, "entering CDROMEJECT\n");
2223 if (!CDROM_CAN(CDC_OPEN_TRAY))
2225 if (cdi->use_count != 1 || keeplocked)
2227 if (CDROM_CAN(CDC_LOCK)) {
2228 int ret = cdi->ops->lock_door(cdi, 0);
2233 return cdi->ops->tray_move(cdi, 1);
2236 static int cdrom_ioctl_closetray(struct cdrom_device_info *cdi)
2238 cdinfo(CD_DO_IOCTL, "entering CDROMCLOSETRAY\n");
2240 if (!CDROM_CAN(CDC_CLOSE_TRAY))
2242 return cdi->ops->tray_move(cdi, 0);
2245 static int cdrom_ioctl_eject_sw(struct cdrom_device_info *cdi,
2248 cdinfo(CD_DO_IOCTL, "entering CDROMEJECT_SW\n");
2250 if (!CDROM_CAN(CDC_OPEN_TRAY))
2255 cdi->options &= ~(CDO_AUTO_CLOSE | CDO_AUTO_EJECT);
2257 cdi->options |= CDO_AUTO_CLOSE | CDO_AUTO_EJECT;
2261 static int cdrom_ioctl_media_changed(struct cdrom_device_info *cdi,
2264 struct cdrom_changer_info *info;
2267 cdinfo(CD_DO_IOCTL, "entering CDROM_MEDIA_CHANGED\n");
2269 if (!CDROM_CAN(CDC_MEDIA_CHANGED))
2272 /* cannot select disc or select current disc */
2273 if (!CDROM_CAN(CDC_SELECT_DISC) || arg == CDSL_CURRENT)
2274 return media_changed(cdi, 1);
2276 if ((unsigned int)arg >= cdi->capacity)
2279 info = kmalloc(sizeof(*info), GFP_KERNEL);
2283 ret = cdrom_read_mech_status(cdi, info);
2285 ret = info->slots[arg].change;
2290 static int cdrom_ioctl_set_options(struct cdrom_device_info *cdi,
2293 cdinfo(CD_DO_IOCTL, "entering CDROM_SET_OPTIONS\n");
2296 * Options need to be in sync with capability.
2297 * Too late for 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 static int cdrom_ioctl_clear_options(struct cdrom_device_info *cdi,
2321 cdinfo(CD_DO_IOCTL, "entering CDROM_CLEAR_OPTIONS\n");
2323 cdi->options &= ~(int) arg;
2324 return cdi->options;
2327 static int cdrom_ioctl_select_speed(struct cdrom_device_info *cdi,
2330 cdinfo(CD_DO_IOCTL, "entering CDROM_SELECT_SPEED\n");
2332 if (!CDROM_CAN(CDC_SELECT_SPEED))
2334 return cdi->ops->select_speed(cdi, arg);
2337 static int cdrom_ioctl_select_disc(struct cdrom_device_info *cdi,
2340 cdinfo(CD_DO_IOCTL, "entering CDROM_SELECT_DISC\n");
2342 if (!CDROM_CAN(CDC_SELECT_DISC))
2345 if (arg != CDSL_CURRENT && arg != CDSL_NONE) {
2346 if ((int)arg >= cdi->capacity)
2351 * ->select_disc is a hook to allow a driver-specific way of
2352 * seleting disc. However, since there is no equivalent hook for
2353 * cdrom_slot_status this may not actually be useful...
2355 if (cdi->ops->select_disc)
2356 return cdi->ops->select_disc(cdi, arg);
2358 cdinfo(CD_CHANGER, "Using generic cdrom_select_disc()\n");
2359 return cdrom_select_disc(cdi, arg);
2362 static int cdrom_ioctl_reset(struct cdrom_device_info *cdi,
2363 struct block_device *bdev)
2365 cdinfo(CD_DO_IOCTL, "entering CDROM_RESET\n");
2367 if (!capable(CAP_SYS_ADMIN))
2369 if (!CDROM_CAN(CDC_RESET))
2371 invalidate_bdev(bdev);
2372 return cdi->ops->reset(cdi);
2375 static int cdrom_ioctl_lock_door(struct cdrom_device_info *cdi,
2378 cdinfo(CD_DO_IOCTL, "%socking door.\n", arg ? "L" : "Unl");
2380 if (!CDROM_CAN(CDC_LOCK))
2381 return -EDRIVE_CANT_DO_THIS;
2383 keeplocked = arg ? 1 : 0;
2386 * Don't unlock the door on multiple opens by default, but allow
2389 if (cdi->use_count != 1 && !arg && !capable(CAP_SYS_ADMIN))
2391 return cdi->ops->lock_door(cdi, arg);
2394 static int cdrom_ioctl_debug(struct cdrom_device_info *cdi,
2397 cdinfo(CD_DO_IOCTL, "%sabling debug.\n", arg ? "En" : "Dis");
2399 if (!capable(CAP_SYS_ADMIN))
2401 debug = arg ? 1 : 0;
2405 static int cdrom_ioctl_get_capability(struct cdrom_device_info *cdi)
2407 cdinfo(CD_DO_IOCTL, "entering CDROM_GET_CAPABILITY\n");
2408 return (cdi->ops->capability & ~cdi->mask);
2412 * The following function is implemented, although very few audio
2413 * discs give Universal Product Code information, which should just be
2414 * the Medium Catalog Number on the box. Note, that the way the code
2415 * is written on the CD is /not/ uniform across all discs!
2417 static int cdrom_ioctl_get_mcn(struct cdrom_device_info *cdi,
2420 struct cdrom_mcn mcn;
2423 cdinfo(CD_DO_IOCTL, "entering CDROM_GET_MCN\n");
2425 if (!(cdi->ops->capability & CDC_MCN))
2427 ret = cdi->ops->get_mcn(cdi, &mcn);
2431 if (copy_to_user(argp, &mcn, sizeof(mcn)))
2433 cdinfo(CD_DO_IOCTL, "CDROM_GET_MCN successful\n");
2437 static int cdrom_ioctl_drive_status(struct cdrom_device_info *cdi,
2440 cdinfo(CD_DO_IOCTL, "entering CDROM_DRIVE_STATUS\n");
2442 if (!(cdi->ops->capability & CDC_DRIVE_STATUS))
2444 if (!CDROM_CAN(CDC_SELECT_DISC) ||
2445 (arg == CDSL_CURRENT || arg == CDSL_NONE))
2446 return cdi->ops->drive_status(cdi, CDSL_CURRENT);
2447 if (((int)arg >= cdi->capacity))
2449 return cdrom_slot_status(cdi, arg);
2453 * Ok, this is where problems start. The current interface for the
2454 * CDROM_DISC_STATUS ioctl is flawed. It makes the false assumption that
2455 * CDs are all CDS_DATA_1 or all CDS_AUDIO, etc. Unfortunatly, while this
2456 * is often the case, it is also very common for CDs to have some tracks
2457 * with data, and some tracks with audio. Just because I feel like it,
2458 * I declare the following to be the best way to cope. If the CD has ANY
2459 * data tracks on it, it will be returned as a data CD. If it has any XA
2460 * tracks, I will return it as that. Now I could simplify this interface
2461 * by combining these returns with the above, but this more clearly
2462 * demonstrates the problem with the current interface. Too bad this
2463 * wasn't designed to use bitmasks... -Erik
2465 * Well, now we have the option CDS_MIXED: a mixed-type CD.
2466 * User level programmers might feel the ioctl is not very useful.
2469 static int cdrom_ioctl_disc_status(struct cdrom_device_info *cdi)
2473 cdinfo(CD_DO_IOCTL, "entering CDROM_DISC_STATUS\n");
2475 cdrom_count_tracks(cdi, &tracks);
2477 return tracks.error;
2479 /* Policy mode on */
2480 if (tracks.audio > 0) {
2481 if (!tracks.data && !tracks.cdi && !tracks.xa)
2491 if (tracks.data > 0)
2493 /* Policy mode off */
2495 cdinfo(CD_WARNING,"This disc doesn't have any tracks I recognize!\n");
2499 static int cdrom_ioctl_changer_nslots(struct cdrom_device_info *cdi)
2501 cdinfo(CD_DO_IOCTL, "entering CDROM_CHANGER_NSLOTS\n");
2502 return cdi->capacity;
2505 static int cdrom_ioctl_get_subchnl(struct cdrom_device_info *cdi,
2508 struct cdrom_subchnl q;
2512 /* cdinfo(CD_DO_IOCTL,"entering CDROMSUBCHNL\n");*/
2514 if (!CDROM_CAN(CDC_PLAY_AUDIO))
2516 if (copy_from_user(&q, argp, sizeof(q)))
2519 requested = q.cdsc_format;
2520 if (requested != CDROM_MSF && requested != CDROM_LBA)
2522 q.cdsc_format = CDROM_MSF;
2524 ret = cdi->ops->audio_ioctl(cdi, CDROMSUBCHNL, &q);
2528 back = q.cdsc_format; /* local copy */
2529 sanitize_format(&q.cdsc_absaddr, &back, requested);
2530 sanitize_format(&q.cdsc_reladdr, &q.cdsc_format, requested);
2532 if (copy_to_user(argp, &q, sizeof(q)))
2534 /* cdinfo(CD_DO_IOCTL, "CDROMSUBCHNL successful\n"); */
2538 static int cdrom_ioctl_read_tochdr(struct cdrom_device_info *cdi,
2541 struct cdrom_tochdr header;
2544 /* cdinfo(CD_DO_IOCTL, "entering CDROMREADTOCHDR\n"); */
2546 if (!CDROM_CAN(CDC_PLAY_AUDIO))
2548 if (copy_from_user(&header, argp, sizeof(header)))
2551 ret = cdi->ops->audio_ioctl(cdi, CDROMREADTOCHDR, &header);
2555 if (copy_to_user(argp, &header, sizeof(header)))
2557 /* cdinfo(CD_DO_IOCTL, "CDROMREADTOCHDR successful\n"); */
2561 static int cdrom_ioctl_read_tocentry(struct cdrom_device_info *cdi,
2564 struct cdrom_tocentry entry;
2565 u8 requested_format;
2568 /* cdinfo(CD_DO_IOCTL, "entering CDROMREADTOCENTRY\n"); */
2570 if (!CDROM_CAN(CDC_PLAY_AUDIO))
2572 if (copy_from_user(&entry, argp, sizeof(entry)))
2575 requested_format = entry.cdte_format;
2576 if (requested_format != CDROM_MSF && requested_format != CDROM_LBA)
2578 /* make interface to low-level uniform */
2579 entry.cdte_format = CDROM_MSF;
2580 ret = cdi->ops->audio_ioctl(cdi, CDROMREADTOCENTRY, &entry);
2583 sanitize_format(&entry.cdte_addr, &entry.cdte_format, requested_format);
2585 if (copy_to_user(argp, &entry, sizeof(entry)))
2587 /* cdinfo(CD_DO_IOCTL, "CDROMREADTOCENTRY successful\n"); */
2591 static int cdrom_ioctl_play_msf(struct cdrom_device_info *cdi,
2594 struct cdrom_msf msf;
2596 cdinfo(CD_DO_IOCTL, "entering CDROMPLAYMSF\n");
2598 if (!CDROM_CAN(CDC_PLAY_AUDIO))
2600 if (copy_from_user(&msf, argp, sizeof(msf)))
2602 return cdi->ops->audio_ioctl(cdi, CDROMPLAYMSF, &msf);
2605 static int cdrom_ioctl_play_trkind(struct cdrom_device_info *cdi,
2611 cdinfo(CD_DO_IOCTL, "entering CDROMPLAYTRKIND\n");
2613 if (!CDROM_CAN(CDC_PLAY_AUDIO))
2615 if (copy_from_user(&ti, argp, sizeof(ti)))
2618 ret = check_for_audio_disc(cdi, cdi->ops);
2621 return cdi->ops->audio_ioctl(cdi, CDROMPLAYTRKIND, &ti);
2623 static int cdrom_ioctl_volctrl(struct cdrom_device_info *cdi,
2626 struct cdrom_volctrl volume;
2628 cdinfo(CD_DO_IOCTL, "entering CDROMVOLCTRL\n");
2630 if (!CDROM_CAN(CDC_PLAY_AUDIO))
2632 if (copy_from_user(&volume, argp, sizeof(volume)))
2634 return cdi->ops->audio_ioctl(cdi, CDROMVOLCTRL, &volume);
2637 static int cdrom_ioctl_volread(struct cdrom_device_info *cdi,
2640 struct cdrom_volctrl volume;
2643 cdinfo(CD_DO_IOCTL, "entering CDROMVOLREAD\n");
2645 if (!CDROM_CAN(CDC_PLAY_AUDIO))
2648 ret = cdi->ops->audio_ioctl(cdi, CDROMVOLREAD, &volume);
2652 if (copy_to_user(argp, &volume, sizeof(volume)))
2657 static int cdrom_ioctl_audioctl(struct cdrom_device_info *cdi,
2662 cdinfo(CD_DO_IOCTL, "doing audio ioctl (start/stop/pause/resume)\n");
2664 if (!CDROM_CAN(CDC_PLAY_AUDIO))
2666 ret = check_for_audio_disc(cdi, cdi->ops);
2669 return cdi->ops->audio_ioctl(cdi, cmd, NULL);
2673 * Just about every imaginable ioctl is supported in the Uniform layer
2675 * ATAPI / SCSI specific code now mainly resides in mmc_ioctl().
2677 int cdrom_ioctl(struct file * file, struct cdrom_device_info *cdi,
2678 struct inode *ip, unsigned int cmd, unsigned long arg)
2680 void __user *argp = (void __user *)arg;
2682 struct gendisk *disk = ip->i_bdev->bd_disk;
2685 * Try the generic SCSI command ioctl's first.
2687 ret = scsi_cmd_ioctl(file, disk->queue, disk, cmd, argp);
2692 case CDROMMULTISESSION:
2693 return cdrom_ioctl_multisession(cdi, argp);
2695 return cdrom_ioctl_eject(cdi);
2696 case CDROMCLOSETRAY:
2697 return cdrom_ioctl_closetray(cdi);
2699 return cdrom_ioctl_eject_sw(cdi, arg);
2700 case CDROM_MEDIA_CHANGED:
2701 return cdrom_ioctl_media_changed(cdi, arg);
2702 case CDROM_SET_OPTIONS:
2703 return cdrom_ioctl_set_options(cdi, arg);
2704 case CDROM_CLEAR_OPTIONS:
2705 return cdrom_ioctl_clear_options(cdi, arg);
2706 case CDROM_SELECT_SPEED:
2707 return cdrom_ioctl_select_speed(cdi, arg);
2708 case CDROM_SELECT_DISC:
2709 return cdrom_ioctl_select_disc(cdi, arg);
2711 return cdrom_ioctl_reset(cdi, ip->i_bdev);
2712 case CDROM_LOCKDOOR:
2713 return cdrom_ioctl_lock_door(cdi, arg);
2715 return cdrom_ioctl_debug(cdi, arg);
2716 case CDROM_GET_CAPABILITY:
2717 return cdrom_ioctl_get_capability(cdi);
2719 return cdrom_ioctl_get_mcn(cdi, argp);
2720 case CDROM_DRIVE_STATUS:
2721 return cdrom_ioctl_drive_status(cdi, arg);
2722 case CDROM_DISC_STATUS:
2723 return cdrom_ioctl_disc_status(cdi);
2724 case CDROM_CHANGER_NSLOTS:
2725 return cdrom_ioctl_changer_nslots(cdi);
2729 * Use the ioctls that are implemented through the generic_packet()
2730 * interface. this may look at bit funny, but if -ENOTTY is
2731 * returned that particular ioctl is not implemented and we
2732 * let it go through the device specific ones.
2734 if (CDROM_CAN(CDC_GENERIC_PACKET)) {
2735 ret = mmc_ioctl(cdi, cmd, arg);
2741 * Note: most of the cdinfo() calls are commented out here,
2742 * because they fill up the sys log when CD players poll
2747 return cdrom_ioctl_get_subchnl(cdi, argp);
2748 case CDROMREADTOCHDR:
2749 return cdrom_ioctl_read_tochdr(cdi, argp);
2750 case CDROMREADTOCENTRY:
2751 return cdrom_ioctl_read_tocentry(cdi, argp);
2753 return cdrom_ioctl_play_msf(cdi, argp);
2754 case CDROMPLAYTRKIND:
2755 return cdrom_ioctl_play_trkind(cdi, argp);
2757 return cdrom_ioctl_volctrl(cdi, argp);
2759 return cdrom_ioctl_volread(cdi, argp);
2764 return cdrom_ioctl_audioctl(cdi, cmd);
2771 * Required when we need to use READ_10 to issue other than 2048 block
2774 static int cdrom_switch_blocksize(struct cdrom_device_info *cdi, int size)
2776 struct cdrom_device_ops *cdo = cdi->ops;
2777 struct packet_command cgc;
2778 struct modesel_head mh;
2780 memset(&mh, 0, sizeof(mh));
2781 mh.block_desc_length = 0x08;
2782 mh.block_length_med = (size >> 8) & 0xff;
2783 mh.block_length_lo = size & 0xff;
2785 memset(&cgc, 0, sizeof(cgc));
2787 cgc.cmd[1] = 1 << 4;
2789 cgc.buflen = sizeof(mh);
2790 cgc.buffer = (char *) &mh;
2791 cgc.data_direction = CGC_DATA_WRITE;
2792 mh.block_desc_length = 0x08;
2793 mh.block_length_med = (size >> 8) & 0xff;
2794 mh.block_length_lo = size & 0xff;
2796 return cdo->generic_packet(cdi, &cgc);
2799 static int mmc_ioctl(struct cdrom_device_info *cdi, unsigned int cmd,
2802 struct cdrom_device_ops *cdo = cdi->ops;
2803 struct packet_command cgc;
2804 struct request_sense sense;
2805 unsigned char buffer[32];
2808 memset(&cgc, 0, sizeof(cgc));
2810 /* build a unified command and queue it through
2811 cdo->generic_packet() */
2814 case CDROMREADMODE1:
2815 case CDROMREADMODE2: {
2816 struct cdrom_msf msf;
2817 int blocksize = 0, format = 0, lba;
2821 blocksize = CD_FRAMESIZE_RAW;
2823 case CDROMREADMODE1:
2824 blocksize = CD_FRAMESIZE;
2827 case CDROMREADMODE2:
2828 blocksize = CD_FRAMESIZE_RAW0;
2831 IOCTL_IN(arg, struct cdrom_msf, msf);
2832 lba = msf_to_lba(msf.cdmsf_min0,msf.cdmsf_sec0,msf.cdmsf_frame0);
2833 /* FIXME: we need upper bound checking, too!! */
2836 cgc.buffer = kmalloc(blocksize, GFP_KERNEL);
2837 if (cgc.buffer == NULL)
2839 memset(&sense, 0, sizeof(sense));
2841 cgc.data_direction = CGC_DATA_READ;
2842 ret = cdrom_read_block(cdi, &cgc, lba, 1, format, blocksize);
2843 if (ret && sense.sense_key==0x05 && sense.asc==0x20 && sense.ascq==0x00) {
2845 * SCSI-II devices are not required to support
2846 * READ_CD, so let's try switching block size
2848 /* FIXME: switch back again... */
2849 if ((ret = cdrom_switch_blocksize(cdi, blocksize))) {
2854 ret = cdrom_read_cd(cdi, &cgc, lba, blocksize, 1);
2855 ret |= cdrom_switch_blocksize(cdi, blocksize);
2857 if (!ret && copy_to_user((char __user *)arg, cgc.buffer, blocksize))
2862 case CDROMREADAUDIO: {
2863 struct cdrom_read_audio ra;
2866 IOCTL_IN(arg, struct cdrom_read_audio, ra);
2868 if (ra.addr_format == CDROM_MSF)
2869 lba = msf_to_lba(ra.addr.msf.minute,
2872 else if (ra.addr_format == CDROM_LBA)
2877 /* FIXME: we need upper bound checking, too!! */
2878 if (lba < 0 || ra.nframes <= 0 || ra.nframes > CD_FRAMES)
2881 return cdrom_read_cdda(cdi, ra.buf, lba, ra.nframes);
2883 case CDROMSUBCHNL: {
2884 struct cdrom_subchnl q;
2885 u_char requested, back;
2886 IOCTL_IN(arg, struct cdrom_subchnl, q);
2887 requested = q.cdsc_format;
2888 if (!((requested == CDROM_MSF) ||
2889 (requested == CDROM_LBA)))
2891 q.cdsc_format = CDROM_MSF;
2892 if ((ret = cdrom_read_subchannel(cdi, &q, 0)))
2894 back = q.cdsc_format; /* local copy */
2895 sanitize_format(&q.cdsc_absaddr, &back, requested);
2896 sanitize_format(&q.cdsc_reladdr, &q.cdsc_format, requested);
2897 IOCTL_OUT(arg, struct cdrom_subchnl, q);
2898 /* cdinfo(CD_DO_IOCTL, "CDROMSUBCHNL successful\n"); */
2901 case CDROMPLAYMSF: {
2902 struct cdrom_msf msf;
2903 cdinfo(CD_DO_IOCTL, "entering CDROMPLAYMSF\n");
2904 IOCTL_IN(arg, struct cdrom_msf, msf);
2905 cgc.cmd[0] = GPCMD_PLAY_AUDIO_MSF;
2906 cgc.cmd[3] = msf.cdmsf_min0;
2907 cgc.cmd[4] = msf.cdmsf_sec0;
2908 cgc.cmd[5] = msf.cdmsf_frame0;
2909 cgc.cmd[6] = msf.cdmsf_min1;
2910 cgc.cmd[7] = msf.cdmsf_sec1;
2911 cgc.cmd[8] = msf.cdmsf_frame1;
2912 cgc.data_direction = CGC_DATA_NONE;
2913 return cdo->generic_packet(cdi, &cgc);
2915 case CDROMPLAYBLK: {
2916 struct cdrom_blk blk;
2917 cdinfo(CD_DO_IOCTL, "entering CDROMPLAYBLK\n");
2918 IOCTL_IN(arg, struct cdrom_blk, blk);
2919 cgc.cmd[0] = GPCMD_PLAY_AUDIO_10;
2920 cgc.cmd[2] = (blk.from >> 24) & 0xff;
2921 cgc.cmd[3] = (blk.from >> 16) & 0xff;
2922 cgc.cmd[4] = (blk.from >> 8) & 0xff;
2923 cgc.cmd[5] = blk.from & 0xff;
2924 cgc.cmd[7] = (blk.len >> 8) & 0xff;
2925 cgc.cmd[8] = blk.len & 0xff;
2926 cgc.data_direction = CGC_DATA_NONE;
2927 return cdo->generic_packet(cdi, &cgc);
2930 case CDROMVOLREAD: {
2931 struct cdrom_volctrl volctrl;
2932 char mask[sizeof(buffer)];
2933 unsigned short offset;
2935 cdinfo(CD_DO_IOCTL, "entering CDROMVOLUME\n");
2937 IOCTL_IN(arg, struct cdrom_volctrl, volctrl);
2939 cgc.buffer = buffer;
2941 if ((ret = cdrom_mode_sense(cdi, &cgc, GPMODE_AUDIO_CTL_PAGE, 0)))
2944 /* originally the code depended on buffer[1] to determine
2945 how much data is available for transfer. buffer[1] is
2946 unfortunately ambigious and the only reliable way seem
2947 to be to simply skip over the block descriptor... */
2948 offset = 8 + be16_to_cpu(*(__be16 *)(buffer+6));
2950 if (offset + 16 > sizeof(buffer))
2953 if (offset + 16 > cgc.buflen) {
2954 cgc.buflen = offset+16;
2955 ret = cdrom_mode_sense(cdi, &cgc,
2956 GPMODE_AUDIO_CTL_PAGE, 0);
2962 if ((buffer[offset] & 0x3f) != GPMODE_AUDIO_CTL_PAGE ||
2963 buffer[offset+1] < 14)
2966 /* now we have the current volume settings. if it was only
2967 a CDROMVOLREAD, return these values */
2968 if (cmd == CDROMVOLREAD) {
2969 volctrl.channel0 = buffer[offset+9];
2970 volctrl.channel1 = buffer[offset+11];
2971 volctrl.channel2 = buffer[offset+13];
2972 volctrl.channel3 = buffer[offset+15];
2973 IOCTL_OUT(arg, struct cdrom_volctrl, volctrl);
2977 /* get the volume mask */
2979 if ((ret = cdrom_mode_sense(cdi, &cgc,
2980 GPMODE_AUDIO_CTL_PAGE, 1)))
2983 buffer[offset+9] = volctrl.channel0 & mask[offset+9];
2984 buffer[offset+11] = volctrl.channel1 & mask[offset+11];
2985 buffer[offset+13] = volctrl.channel2 & mask[offset+13];
2986 buffer[offset+15] = volctrl.channel3 & mask[offset+15];
2989 cgc.buffer = buffer + offset - 8;
2990 memset(cgc.buffer, 0, 8);
2991 return cdrom_mode_select(cdi, &cgc);
2996 cdinfo(CD_DO_IOCTL, "entering CDROMSTART/CDROMSTOP\n");
2997 cgc.cmd[0] = GPCMD_START_STOP_UNIT;
2999 cgc.cmd[4] = (cmd == CDROMSTART) ? 1 : 0;
3000 cgc.data_direction = CGC_DATA_NONE;
3001 return cdo->generic_packet(cdi, &cgc);
3006 cdinfo(CD_DO_IOCTL, "entering CDROMPAUSE/CDROMRESUME\n");
3007 cgc.cmd[0] = GPCMD_PAUSE_RESUME;
3008 cgc.cmd[8] = (cmd == CDROMRESUME) ? 1 : 0;
3009 cgc.data_direction = CGC_DATA_NONE;
3010 return cdo->generic_packet(cdi, &cgc);
3013 case DVD_READ_STRUCT: {
3015 int size = sizeof(dvd_struct);
3016 if (!CDROM_CAN(CDC_DVD))
3018 if ((s = kmalloc(size, GFP_KERNEL)) == NULL)
3020 cdinfo(CD_DO_IOCTL, "entering DVD_READ_STRUCT\n");
3021 if (copy_from_user(s, (dvd_struct __user *)arg, size)) {
3025 if ((ret = dvd_read_struct(cdi, s))) {
3029 if (copy_to_user((dvd_struct __user *)arg, s, size))
3037 if (!CDROM_CAN(CDC_DVD))
3039 cdinfo(CD_DO_IOCTL, "entering DVD_AUTH\n");
3040 IOCTL_IN(arg, dvd_authinfo, ai);
3041 if ((ret = dvd_do_auth (cdi, &ai)))
3043 IOCTL_OUT(arg, dvd_authinfo, ai);
3047 case CDROM_NEXT_WRITABLE: {
3049 cdinfo(CD_DO_IOCTL, "entering CDROM_NEXT_WRITABLE\n");
3050 if ((ret = cdrom_get_next_writable(cdi, &next)))
3052 IOCTL_OUT(arg, long, next);
3055 case CDROM_LAST_WRITTEN: {
3057 cdinfo(CD_DO_IOCTL, "entering CDROM_LAST_WRITTEN\n");
3058 if ((ret = cdrom_get_last_written(cdi, &last)))
3060 IOCTL_OUT(arg, long, last);
3068 static int cdrom_get_track_info(struct cdrom_device_info *cdi, __u16 track, __u8 type,
3069 track_information *ti)
3071 struct cdrom_device_ops *cdo = cdi->ops;
3072 struct packet_command cgc;
3075 init_cdrom_command(&cgc, ti, 8, CGC_DATA_READ);
3076 cgc.cmd[0] = GPCMD_READ_TRACK_RZONE_INFO;
3077 cgc.cmd[1] = type & 3;
3078 cgc.cmd[4] = (track & 0xff00) >> 8;
3079 cgc.cmd[5] = track & 0xff;
3083 if ((ret = cdo->generic_packet(cdi, &cgc)))
3086 buflen = be16_to_cpu(ti->track_information_length) +
3087 sizeof(ti->track_information_length);
3089 if (buflen > sizeof(track_information))
3090 buflen = sizeof(track_information);
3092 cgc.cmd[8] = cgc.buflen = buflen;
3093 if ((ret = cdo->generic_packet(cdi, &cgc)))
3096 /* return actual fill size */
3100 /* requires CD R/RW */
3101 static int cdrom_get_disc_info(struct cdrom_device_info *cdi, disc_information *di)
3103 struct cdrom_device_ops *cdo = cdi->ops;
3104 struct packet_command cgc;
3107 /* set up command and get the disc info */
3108 init_cdrom_command(&cgc, di, sizeof(*di), CGC_DATA_READ);
3109 cgc.cmd[0] = GPCMD_READ_DISC_INFO;
3110 cgc.cmd[8] = cgc.buflen = 2;
3113 if ((ret = cdo->generic_packet(cdi, &cgc)))
3116 /* not all drives have the same disc_info length, so requeue
3117 * packet with the length the drive tells us it can supply
3119 buflen = be16_to_cpu(di->disc_information_length) +
3120 sizeof(di->disc_information_length);
3122 if (buflen > sizeof(disc_information))
3123 buflen = sizeof(disc_information);
3125 cgc.cmd[8] = cgc.buflen = buflen;
3126 if ((ret = cdo->generic_packet(cdi, &cgc)))
3129 /* return actual fill size */
3133 /* return the last written block on the CD-R media. this is for the udf
3135 int cdrom_get_last_written(struct cdrom_device_info *cdi, long *last_written)
3137 struct cdrom_tocentry toc;
3138 disc_information di;
3139 track_information ti;
3141 int ret = -1, ti_size;
3143 if (!CDROM_CAN(CDC_GENERIC_PACKET))
3146 ret = cdrom_get_disc_info(cdi, &di);
3147 if (ret < (int)(offsetof(typeof(di), last_track_lsb)
3148 + sizeof(di.last_track_lsb)))
3151 /* if unit didn't return msb, it's zeroed by cdrom_get_disc_info */
3152 last_track = (di.last_track_msb << 8) | di.last_track_lsb;
3153 ti_size = cdrom_get_track_info(cdi, last_track, 1, &ti);
3154 if (ti_size < (int)offsetof(typeof(ti), track_start))
3157 /* if this track is blank, try the previous. */
3162 ti_size = cdrom_get_track_info(cdi, last_track, 1, &ti);
3165 if (ti_size < (int)(offsetof(typeof(ti), track_size)
3166 + sizeof(ti.track_size)))
3169 /* if last recorded field is valid, return it. */
3170 if (ti.lra_v && ti_size >= (int)(offsetof(typeof(ti), last_rec_address)
3171 + sizeof(ti.last_rec_address))) {
3172 *last_written = be32_to_cpu(ti.last_rec_address);
3174 /* make it up instead */
3175 *last_written = be32_to_cpu(ti.track_start) +
3176 be32_to_cpu(ti.track_size);
3178 *last_written -= (be32_to_cpu(ti.free_blocks) + 7);
3182 /* this is where we end up if the drive either can't do a
3183 GPCMD_READ_DISC_INFO or GPCMD_READ_TRACK_RZONE_INFO or if
3184 it doesn't give enough information or fails. then we return
3185 the toc contents. */
3187 toc.cdte_format = CDROM_MSF;
3188 toc.cdte_track = CDROM_LEADOUT;
3189 if ((ret = cdi->ops->audio_ioctl(cdi, CDROMREADTOCENTRY, &toc)))
3191 sanitize_format(&toc.cdte_addr, &toc.cdte_format, CDROM_LBA);
3192 *last_written = toc.cdte_addr.lba;
3196 /* return the next writable block. also for udf file system. */
3197 static int cdrom_get_next_writable(struct cdrom_device_info *cdi, long *next_writable)
3199 disc_information di;
3200 track_information ti;
3204 if (!CDROM_CAN(CDC_GENERIC_PACKET))
3205 goto use_last_written;
3207 ret = cdrom_get_disc_info(cdi, &di);
3208 if (ret < 0 || ret < offsetof(typeof(di), last_track_lsb)
3209 + sizeof(di.last_track_lsb))
3210 goto use_last_written;
3212 /* if unit didn't return msb, it's zeroed by cdrom_get_disc_info */
3213 last_track = (di.last_track_msb << 8) | di.last_track_lsb;
3214 ti_size = cdrom_get_track_info(cdi, last_track, 1, &ti);
3215 if (ti_size < 0 || ti_size < offsetof(typeof(ti), track_start))
3216 goto use_last_written;
3218 /* if this track is blank, try the previous. */
3220 if (last_track == 1)
3221 goto use_last_written;
3223 ti_size = cdrom_get_track_info(cdi, last_track, 1, &ti);
3225 goto use_last_written;
3228 /* if next recordable address field is valid, use it. */
3229 if (ti.nwa_v && ti_size >= offsetof(typeof(ti), next_writable)
3230 + sizeof(ti.next_writable)) {
3231 *next_writable = be32_to_cpu(ti.next_writable);
3236 if ((ret = cdrom_get_last_written(cdi, next_writable))) {
3240 *next_writable += 7;
3245 EXPORT_SYMBOL(cdrom_get_last_written);
3246 EXPORT_SYMBOL(register_cdrom);
3247 EXPORT_SYMBOL(unregister_cdrom);
3248 EXPORT_SYMBOL(cdrom_open);
3249 EXPORT_SYMBOL(cdrom_release);
3250 EXPORT_SYMBOL(cdrom_ioctl);
3251 EXPORT_SYMBOL(cdrom_media_changed);
3252 EXPORT_SYMBOL(cdrom_number_of_slots);
3253 EXPORT_SYMBOL(cdrom_mode_select);
3254 EXPORT_SYMBOL(cdrom_mode_sense);
3255 EXPORT_SYMBOL(init_cdrom_command);
3256 EXPORT_SYMBOL(cdrom_get_media_event);
3258 #ifdef CONFIG_SYSCTL
3260 #define CDROM_STR_SIZE 1000
3262 static struct cdrom_sysctl_settings {
3263 char info[CDROM_STR_SIZE]; /* general info */
3264 int autoclose; /* close tray upon mount, etc */
3265 int autoeject; /* eject on umount */
3266 int debug; /* turn on debugging messages */
3267 int lock; /* lock the door on device open */
3268 int check; /* check media type */
3269 } cdrom_sysctl_settings;
3271 enum cdrom_print_option {
3278 static int cdrom_print_info(const char *header, int val, char *info,
3279 int *pos, enum cdrom_print_option option)
3281 const int max_size = sizeof(cdrom_sysctl_settings.info);
3282 struct cdrom_device_info *cdi;
3285 ret = scnprintf(info + *pos, max_size - *pos, header);
3291 list_for_each_entry(cdi, &cdrom_list, list) {
3294 ret = scnprintf(info + *pos, max_size - *pos,
3298 ret = scnprintf(info + *pos, max_size - *pos,
3299 "\t%d", cdi->speed);
3302 ret = scnprintf(info + *pos, max_size - *pos,
3303 "\t%d", cdi->capacity);
3305 case CTL_CAPABILITY:
3306 ret = scnprintf(info + *pos, max_size - *pos,
3307 "\t%d", CDROM_CAN(val) != 0);
3310 printk(KERN_INFO "cdrom: invalid option%d\n", option);
3321 static int cdrom_sysctl_info(ctl_table *ctl, int write, struct file * filp,
3322 void __user *buffer, size_t *lenp, loff_t *ppos)
3325 char *info = cdrom_sysctl_settings.info;
3326 const int max_size = sizeof(cdrom_sysctl_settings.info);
3328 if (!*lenp || (*ppos && !write)) {
3333 mutex_lock(&cdrom_mutex);
3335 pos = sprintf(info, "CD-ROM information, " VERSION "\n");
3337 if (cdrom_print_info("\ndrive name:\t", 0, info, &pos, CTL_NAME))
3339 if (cdrom_print_info("\ndrive speed:\t", 0, info, &pos, CTL_SPEED))
3341 if (cdrom_print_info("\ndrive # of slots:", 0, info, &pos, CTL_SLOTS))
3343 if (cdrom_print_info("\nCan close tray:\t",
3344 CDC_CLOSE_TRAY, info, &pos, CTL_CAPABILITY))
3346 if (cdrom_print_info("\nCan open tray:\t",
3347 CDC_OPEN_TRAY, info, &pos, CTL_CAPABILITY))
3349 if (cdrom_print_info("\nCan lock tray:\t",
3350 CDC_LOCK, info, &pos, CTL_CAPABILITY))
3352 if (cdrom_print_info("\nCan change speed:",
3353 CDC_SELECT_SPEED, info, &pos, CTL_CAPABILITY))
3355 if (cdrom_print_info("\nCan select disk:",
3356 CDC_SELECT_DISC, info, &pos, CTL_CAPABILITY))
3358 if (cdrom_print_info("\nCan read multisession:",
3359 CDC_MULTI_SESSION, info, &pos, CTL_CAPABILITY))
3361 if (cdrom_print_info("\nCan read MCN:\t",
3362 CDC_MCN, info, &pos, CTL_CAPABILITY))
3364 if (cdrom_print_info("\nReports media changed:",
3365 CDC_MEDIA_CHANGED, info, &pos, CTL_CAPABILITY))
3367 if (cdrom_print_info("\nCan play audio:\t",
3368 CDC_PLAY_AUDIO, info, &pos, CTL_CAPABILITY))
3370 if (cdrom_print_info("\nCan write CD-R:\t",
3371 CDC_CD_R, info, &pos, CTL_CAPABILITY))
3373 if (cdrom_print_info("\nCan write CD-RW:",
3374 CDC_CD_RW, info, &pos, CTL_CAPABILITY))
3376 if (cdrom_print_info("\nCan read DVD:\t",
3377 CDC_DVD, info, &pos, CTL_CAPABILITY))
3379 if (cdrom_print_info("\nCan write DVD-R:",
3380 CDC_DVD_R, info, &pos, CTL_CAPABILITY))
3382 if (cdrom_print_info("\nCan write DVD-RAM:",
3383 CDC_DVD_RAM, info, &pos, CTL_CAPABILITY))
3385 if (cdrom_print_info("\nCan read MRW:\t",
3386 CDC_MRW, info, &pos, CTL_CAPABILITY))
3388 if (cdrom_print_info("\nCan write MRW:\t",
3389 CDC_MRW_W, info, &pos, CTL_CAPABILITY))
3391 if (cdrom_print_info("\nCan write RAM:\t",
3392 CDC_RAM, info, &pos, CTL_CAPABILITY))
3394 if (!scnprintf(info + pos, max_size - pos, "\n\n"))
3397 mutex_unlock(&cdrom_mutex);
3398 return proc_dostring(ctl, write, filp, buffer, lenp, ppos);
3400 printk(KERN_INFO "cdrom: info buffer too small\n");
3404 /* Unfortunately, per device settings are not implemented through
3405 procfs/sysctl yet. When they are, this will naturally disappear. For now
3406 just update all drives. Later this will become the template on which
3407 new registered drives will be based. */
3408 static void cdrom_update_settings(void)
3410 struct cdrom_device_info *cdi;
3412 mutex_lock(&cdrom_mutex);
3413 list_for_each_entry(cdi, &cdrom_list, list) {
3414 if (autoclose && CDROM_CAN(CDC_CLOSE_TRAY))
3415 cdi->options |= CDO_AUTO_CLOSE;
3416 else if (!autoclose)
3417 cdi->options &= ~CDO_AUTO_CLOSE;
3418 if (autoeject && CDROM_CAN(CDC_OPEN_TRAY))
3419 cdi->options |= CDO_AUTO_EJECT;
3420 else if (!autoeject)
3421 cdi->options &= ~CDO_AUTO_EJECT;
3422 if (lockdoor && CDROM_CAN(CDC_LOCK))
3423 cdi->options |= CDO_LOCK;
3425 cdi->options &= ~CDO_LOCK;
3426 if (check_media_type)
3427 cdi->options |= CDO_CHECK_TYPE;
3429 cdi->options &= ~CDO_CHECK_TYPE;
3431 mutex_unlock(&cdrom_mutex);
3434 static int cdrom_sysctl_handler(ctl_table *ctl, int write, struct file * filp,
3435 void __user *buffer, size_t *lenp, loff_t *ppos)
3439 ret = proc_dointvec(ctl, write, filp, buffer, lenp, ppos);
3443 /* we only care for 1 or 0. */
3444 autoclose = !!cdrom_sysctl_settings.autoclose;
3445 autoeject = !!cdrom_sysctl_settings.autoeject;
3446 debug = !!cdrom_sysctl_settings.debug;
3447 lockdoor = !!cdrom_sysctl_settings.lock;
3448 check_media_type = !!cdrom_sysctl_settings.check;
3450 /* update the option flags according to the changes. we
3451 don't have per device options through sysctl yet,
3452 but we will have and then this will disappear. */
3453 cdrom_update_settings();
3459 /* Place files in /proc/sys/dev/cdrom */
3460 static ctl_table cdrom_table[] = {
3463 .data = &cdrom_sysctl_settings.info,
3464 .maxlen = CDROM_STR_SIZE,
3466 .proc_handler = &cdrom_sysctl_info,
3469 .procname = "autoclose",
3470 .data = &cdrom_sysctl_settings.autoclose,
3471 .maxlen = sizeof(int),
3473 .proc_handler = &cdrom_sysctl_handler,
3476 .procname = "autoeject",
3477 .data = &cdrom_sysctl_settings.autoeject,
3478 .maxlen = sizeof(int),
3480 .proc_handler = &cdrom_sysctl_handler,
3483 .procname = "debug",
3484 .data = &cdrom_sysctl_settings.debug,
3485 .maxlen = sizeof(int),
3487 .proc_handler = &cdrom_sysctl_handler,
3491 .data = &cdrom_sysctl_settings.lock,
3492 .maxlen = sizeof(int),
3494 .proc_handler = &cdrom_sysctl_handler,
3497 .procname = "check_media",
3498 .data = &cdrom_sysctl_settings.check,
3499 .maxlen = sizeof(int),
3501 .proc_handler = &cdrom_sysctl_handler
3506 static ctl_table cdrom_cdrom_table[] = {
3508 .ctl_name = DEV_CDROM,
3509 .procname = "cdrom",
3512 .child = cdrom_table,
3517 /* Make sure that /proc/sys/dev is there */
3518 static ctl_table cdrom_root_table[] = {
3520 .ctl_name = CTL_DEV,
3524 .child = cdrom_cdrom_table,
3528 static struct ctl_table_header *cdrom_sysctl_header;
3530 static void cdrom_sysctl_register(void)
3532 static int initialized;
3534 if (initialized == 1)
3537 cdrom_sysctl_header = register_sysctl_table(cdrom_root_table);
3539 /* set the defaults */
3540 cdrom_sysctl_settings.autoclose = autoclose;
3541 cdrom_sysctl_settings.autoeject = autoeject;
3542 cdrom_sysctl_settings.debug = debug;
3543 cdrom_sysctl_settings.lock = lockdoor;
3544 cdrom_sysctl_settings.check = check_media_type;
3549 static void cdrom_sysctl_unregister(void)
3551 if (cdrom_sysctl_header)
3552 unregister_sysctl_table(cdrom_sysctl_header);
3555 #else /* CONFIG_SYSCTL */
3557 static void cdrom_sysctl_register(void)
3561 static void cdrom_sysctl_unregister(void)
3565 #endif /* CONFIG_SYSCTL */
3567 static int __init cdrom_init(void)
3569 cdrom_sysctl_register();
3574 static void __exit cdrom_exit(void)
3576 printk(KERN_INFO "Uniform CD-ROM driver unloaded\n");
3577 cdrom_sysctl_unregister();
3580 module_init(cdrom_init);
3581 module_exit(cdrom_exit);
3582 MODULE_LICENSE("GPL");