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 /* Grab the TOC header so we can see how many tracks there are */
1440 if ((ret = cdi->ops->audio_ioctl(cdi, CDROMREADTOCHDR, &header))) {
1441 if (ret == -ENOMEDIUM)
1442 tracks->error = CDS_NO_DISC;
1444 tracks->error = CDS_NO_INFO;
1447 /* check what type of tracks are on this disc */
1448 entry.cdte_format = CDROM_MSF;
1449 for (i = header.cdth_trk0; i <= header.cdth_trk1; i++) {
1450 entry.cdte_track = i;
1451 if (cdi->ops->audio_ioctl(cdi, CDROMREADTOCENTRY, &entry)) {
1452 tracks->error=CDS_NO_INFO;
1455 if (entry.cdte_ctrl & CDROM_DATA_TRACK) {
1456 if (entry.cdte_format == 0x10)
1458 else if (entry.cdte_format == 0x20)
1464 cdinfo(CD_COUNT_TRACKS, "track %d: format=%d, ctrl=%d\n",
1465 i, entry.cdte_format, entry.cdte_ctrl);
1467 cdinfo(CD_COUNT_TRACKS, "disc has %d tracks: %d=audio %d=data %d=Cd-I %d=XA\n",
1468 header.cdth_trk1, tracks->audio, tracks->data,
1469 tracks->cdi, tracks->xa);
1472 /* Requests to the low-level drivers will /always/ be done in the
1473 following format convention:
1475 CDROM_LBA: all data-related requests.
1476 CDROM_MSF: all audio-related requests.
1478 However, a low-level implementation is allowed to refuse this
1479 request, and return information in its own favorite format.
1481 It doesn't make sense /at all/ to ask for a play_audio in LBA
1482 format, or ask for multi-session info in MSF format. However, for
1483 backward compatibility these format requests will be satisfied, but
1484 the requests to the low-level drivers will be sanitized in the more
1485 meaningful format indicated above.
1489 void sanitize_format(union cdrom_addr *addr,
1490 u_char * curr, u_char requested)
1492 if (*curr == requested)
1493 return; /* nothing to be done! */
1494 if (requested == CDROM_LBA) {
1495 addr->lba = (int) addr->msf.frame +
1496 75 * (addr->msf.second - 2 + 60 * addr->msf.minute);
1497 } else { /* CDROM_MSF */
1498 int lba = addr->lba;
1499 addr->msf.frame = lba % 75;
1502 addr->msf.second = lba % 60;
1503 addr->msf.minute = lba / 60;
1508 void init_cdrom_command(struct packet_command *cgc, void *buf, int len,
1511 memset(cgc, 0, sizeof(struct packet_command));
1513 memset(buf, 0, len);
1514 cgc->buffer = (char *) buf;
1516 cgc->data_direction = type;
1517 cgc->timeout = CDROM_DEF_TIMEOUT;
1522 #define copy_key(dest,src) memcpy((dest), (src), sizeof(dvd_key))
1523 #define copy_chal(dest,src) memcpy((dest), (src), sizeof(dvd_challenge))
1525 static void setup_report_key(struct packet_command *cgc, unsigned agid, unsigned type)
1527 cgc->cmd[0] = GPCMD_REPORT_KEY;
1528 cgc->cmd[10] = type | (agid << 6);
1530 case 0: case 8: case 5: {
1543 cgc->cmd[9] = cgc->buflen;
1544 cgc->data_direction = CGC_DATA_READ;
1547 static void setup_send_key(struct packet_command *cgc, unsigned agid, unsigned type)
1549 cgc->cmd[0] = GPCMD_SEND_KEY;
1550 cgc->cmd[10] = type | (agid << 6);
1565 cgc->cmd[9] = cgc->buflen;
1566 cgc->data_direction = CGC_DATA_WRITE;
1569 static int dvd_do_auth(struct cdrom_device_info *cdi, dvd_authinfo *ai)
1573 struct packet_command cgc;
1574 struct cdrom_device_ops *cdo = cdi->ops;
1575 rpc_state_t rpc_state;
1577 memset(buf, 0, sizeof(buf));
1578 init_cdrom_command(&cgc, buf, 0, CGC_DATA_READ);
1582 case DVD_LU_SEND_AGID:
1583 cdinfo(CD_DVD, "entering DVD_LU_SEND_AGID\n");
1585 setup_report_key(&cgc, ai->lsa.agid, 0);
1587 if ((ret = cdo->generic_packet(cdi, &cgc)))
1590 ai->lsa.agid = buf[7] >> 6;
1591 /* Returning data, let host change state */
1594 case DVD_LU_SEND_KEY1:
1595 cdinfo(CD_DVD, "entering DVD_LU_SEND_KEY1\n");
1596 setup_report_key(&cgc, ai->lsk.agid, 2);
1598 if ((ret = cdo->generic_packet(cdi, &cgc)))
1601 copy_key(ai->lsk.key, &buf[4]);
1602 /* Returning data, let host change state */
1605 case DVD_LU_SEND_CHALLENGE:
1606 cdinfo(CD_DVD, "entering DVD_LU_SEND_CHALLENGE\n");
1607 setup_report_key(&cgc, ai->lsc.agid, 1);
1609 if ((ret = cdo->generic_packet(cdi, &cgc)))
1612 copy_chal(ai->lsc.chal, &buf[4]);
1613 /* Returning data, let host change state */
1617 case DVD_LU_SEND_TITLE_KEY:
1618 cdinfo(CD_DVD, "entering DVD_LU_SEND_TITLE_KEY\n");
1620 setup_report_key(&cgc, ai->lstk.agid, 4);
1621 cgc.cmd[5] = ai->lstk.lba;
1622 cgc.cmd[4] = ai->lstk.lba >> 8;
1623 cgc.cmd[3] = ai->lstk.lba >> 16;
1624 cgc.cmd[2] = ai->lstk.lba >> 24;
1626 if ((ret = cdo->generic_packet(cdi, &cgc)))
1629 ai->lstk.cpm = (buf[4] >> 7) & 1;
1630 ai->lstk.cp_sec = (buf[4] >> 6) & 1;
1631 ai->lstk.cgms = (buf[4] >> 4) & 3;
1632 copy_key(ai->lstk.title_key, &buf[5]);
1633 /* Returning data, let host change state */
1636 case DVD_LU_SEND_ASF:
1637 cdinfo(CD_DVD, "entering DVD_LU_SEND_ASF\n");
1638 setup_report_key(&cgc, ai->lsasf.agid, 5);
1640 if ((ret = cdo->generic_packet(cdi, &cgc)))
1643 ai->lsasf.asf = buf[7] & 1;
1646 /* LU data receive (LU changes state) */
1647 case DVD_HOST_SEND_CHALLENGE:
1648 cdinfo(CD_DVD, "entering DVD_HOST_SEND_CHALLENGE\n");
1649 setup_send_key(&cgc, ai->hsc.agid, 1);
1651 copy_chal(&buf[4], ai->hsc.chal);
1653 if ((ret = cdo->generic_packet(cdi, &cgc)))
1656 ai->type = DVD_LU_SEND_KEY1;
1659 case DVD_HOST_SEND_KEY2:
1660 cdinfo(CD_DVD, "entering DVD_HOST_SEND_KEY2\n");
1661 setup_send_key(&cgc, ai->hsk.agid, 3);
1663 copy_key(&buf[4], ai->hsk.key);
1665 if ((ret = cdo->generic_packet(cdi, &cgc))) {
1666 ai->type = DVD_AUTH_FAILURE;
1669 ai->type = DVD_AUTH_ESTABLISHED;
1673 case DVD_INVALIDATE_AGID:
1675 cdinfo(CD_DVD, "entering DVD_INVALIDATE_AGID\n");
1676 setup_report_key(&cgc, ai->lsa.agid, 0x3f);
1677 if ((ret = cdo->generic_packet(cdi, &cgc)))
1681 /* Get region settings */
1682 case DVD_LU_SEND_RPC_STATE:
1683 cdinfo(CD_DVD, "entering DVD_LU_SEND_RPC_STATE\n");
1684 setup_report_key(&cgc, 0, 8);
1685 memset(&rpc_state, 0, sizeof(rpc_state_t));
1686 cgc.buffer = (char *) &rpc_state;
1688 if ((ret = cdo->generic_packet(cdi, &cgc)))
1691 ai->lrpcs.type = rpc_state.type_code;
1692 ai->lrpcs.vra = rpc_state.vra;
1693 ai->lrpcs.ucca = rpc_state.ucca;
1694 ai->lrpcs.region_mask = rpc_state.region_mask;
1695 ai->lrpcs.rpc_scheme = rpc_state.rpc_scheme;
1698 /* Set region settings */
1699 case DVD_HOST_SEND_RPC_STATE:
1700 cdinfo(CD_DVD, "entering DVD_HOST_SEND_RPC_STATE\n");
1701 setup_send_key(&cgc, 0, 6);
1703 buf[4] = ai->hrpcs.pdrc;
1705 if ((ret = cdo->generic_packet(cdi, &cgc)))
1710 cdinfo(CD_WARNING, "Invalid DVD key ioctl (%d)\n", ai->type);
1717 static int dvd_read_physical(struct cdrom_device_info *cdi, dvd_struct *s)
1719 unsigned char buf[21], *base;
1720 struct dvd_layer *layer;
1721 struct packet_command cgc;
1722 struct cdrom_device_ops *cdo = cdi->ops;
1723 int ret, layer_num = s->physical.layer_num;
1725 if (layer_num >= DVD_LAYERS)
1728 init_cdrom_command(&cgc, buf, sizeof(buf), CGC_DATA_READ);
1729 cgc.cmd[0] = GPCMD_READ_DVD_STRUCTURE;
1730 cgc.cmd[6] = layer_num;
1731 cgc.cmd[7] = s->type;
1732 cgc.cmd[9] = cgc.buflen & 0xff;
1735 * refrain from reporting errors on non-existing layers (mainly)
1739 if ((ret = cdo->generic_packet(cdi, &cgc)))
1743 layer = &s->physical.layer[layer_num];
1746 * place the data... really ugly, but at least we won't have to
1747 * worry about endianess in userspace.
1749 memset(layer, 0, sizeof(*layer));
1750 layer->book_version = base[0] & 0xf;
1751 layer->book_type = base[0] >> 4;
1752 layer->min_rate = base[1] & 0xf;
1753 layer->disc_size = base[1] >> 4;
1754 layer->layer_type = base[2] & 0xf;
1755 layer->track_path = (base[2] >> 4) & 1;
1756 layer->nlayers = (base[2] >> 5) & 3;
1757 layer->track_density = base[3] & 0xf;
1758 layer->linear_density = base[3] >> 4;
1759 layer->start_sector = base[5] << 16 | base[6] << 8 | base[7];
1760 layer->end_sector = base[9] << 16 | base[10] << 8 | base[11];
1761 layer->end_sector_l0 = base[13] << 16 | base[14] << 8 | base[15];
1762 layer->bca = base[16] >> 7;
1767 static int dvd_read_copyright(struct cdrom_device_info *cdi, dvd_struct *s)
1771 struct packet_command cgc;
1772 struct cdrom_device_ops *cdo = cdi->ops;
1774 init_cdrom_command(&cgc, buf, sizeof(buf), CGC_DATA_READ);
1775 cgc.cmd[0] = GPCMD_READ_DVD_STRUCTURE;
1776 cgc.cmd[6] = s->copyright.layer_num;
1777 cgc.cmd[7] = s->type;
1778 cgc.cmd[8] = cgc.buflen >> 8;
1779 cgc.cmd[9] = cgc.buflen & 0xff;
1781 if ((ret = cdo->generic_packet(cdi, &cgc)))
1784 s->copyright.cpst = buf[4];
1785 s->copyright.rmi = buf[5];
1790 static int dvd_read_disckey(struct cdrom_device_info *cdi, dvd_struct *s)
1794 struct packet_command cgc;
1795 struct cdrom_device_ops *cdo = cdi->ops;
1797 size = sizeof(s->disckey.value) + 4;
1799 if ((buf = kmalloc(size, GFP_KERNEL)) == NULL)
1802 init_cdrom_command(&cgc, buf, size, CGC_DATA_READ);
1803 cgc.cmd[0] = GPCMD_READ_DVD_STRUCTURE;
1804 cgc.cmd[7] = s->type;
1805 cgc.cmd[8] = size >> 8;
1806 cgc.cmd[9] = size & 0xff;
1807 cgc.cmd[10] = s->disckey.agid << 6;
1809 if (!(ret = cdo->generic_packet(cdi, &cgc)))
1810 memcpy(s->disckey.value, &buf[4], sizeof(s->disckey.value));
1816 static int dvd_read_bca(struct cdrom_device_info *cdi, dvd_struct *s)
1819 u_char buf[4 + 188];
1820 struct packet_command cgc;
1821 struct cdrom_device_ops *cdo = cdi->ops;
1823 init_cdrom_command(&cgc, buf, sizeof(buf), CGC_DATA_READ);
1824 cgc.cmd[0] = GPCMD_READ_DVD_STRUCTURE;
1825 cgc.cmd[7] = s->type;
1826 cgc.cmd[9] = cgc.buflen & 0xff;
1828 if ((ret = cdo->generic_packet(cdi, &cgc)))
1831 s->bca.len = buf[0] << 8 | buf[1];
1832 if (s->bca.len < 12 || s->bca.len > 188) {
1833 cdinfo(CD_WARNING, "Received invalid BCA length (%d)\n", s->bca.len);
1836 memcpy(s->bca.value, &buf[4], s->bca.len);
1841 static int dvd_read_manufact(struct cdrom_device_info *cdi, dvd_struct *s)
1845 struct packet_command cgc;
1846 struct cdrom_device_ops *cdo = cdi->ops;
1848 size = sizeof(s->manufact.value) + 4;
1850 if ((buf = kmalloc(size, GFP_KERNEL)) == NULL)
1853 init_cdrom_command(&cgc, buf, size, CGC_DATA_READ);
1854 cgc.cmd[0] = GPCMD_READ_DVD_STRUCTURE;
1855 cgc.cmd[7] = s->type;
1856 cgc.cmd[8] = size >> 8;
1857 cgc.cmd[9] = size & 0xff;
1859 if ((ret = cdo->generic_packet(cdi, &cgc))) {
1864 s->manufact.len = buf[0] << 8 | buf[1];
1865 if (s->manufact.len < 0 || s->manufact.len > 2048) {
1866 cdinfo(CD_WARNING, "Received invalid manufacture info length"
1867 " (%d)\n", s->manufact.len);
1870 memcpy(s->manufact.value, &buf[4], s->manufact.len);
1877 static int dvd_read_struct(struct cdrom_device_info *cdi, dvd_struct *s)
1880 case DVD_STRUCT_PHYSICAL:
1881 return dvd_read_physical(cdi, s);
1883 case DVD_STRUCT_COPYRIGHT:
1884 return dvd_read_copyright(cdi, s);
1886 case DVD_STRUCT_DISCKEY:
1887 return dvd_read_disckey(cdi, s);
1889 case DVD_STRUCT_BCA:
1890 return dvd_read_bca(cdi, s);
1892 case DVD_STRUCT_MANUFACT:
1893 return dvd_read_manufact(cdi, s);
1896 cdinfo(CD_WARNING, ": Invalid DVD structure read requested (%d)\n",
1902 int cdrom_mode_sense(struct cdrom_device_info *cdi,
1903 struct packet_command *cgc,
1904 int page_code, int page_control)
1906 struct cdrom_device_ops *cdo = cdi->ops;
1908 memset(cgc->cmd, 0, sizeof(cgc->cmd));
1910 cgc->cmd[0] = GPCMD_MODE_SENSE_10;
1911 cgc->cmd[2] = page_code | (page_control << 6);
1912 cgc->cmd[7] = cgc->buflen >> 8;
1913 cgc->cmd[8] = cgc->buflen & 0xff;
1914 cgc->data_direction = CGC_DATA_READ;
1915 return cdo->generic_packet(cdi, cgc);
1918 int cdrom_mode_select(struct cdrom_device_info *cdi,
1919 struct packet_command *cgc)
1921 struct cdrom_device_ops *cdo = cdi->ops;
1923 memset(cgc->cmd, 0, sizeof(cgc->cmd));
1924 memset(cgc->buffer, 0, 2);
1925 cgc->cmd[0] = GPCMD_MODE_SELECT_10;
1926 cgc->cmd[1] = 0x10; /* PF */
1927 cgc->cmd[7] = cgc->buflen >> 8;
1928 cgc->cmd[8] = cgc->buflen & 0xff;
1929 cgc->data_direction = CGC_DATA_WRITE;
1930 return cdo->generic_packet(cdi, cgc);
1933 static int cdrom_read_subchannel(struct cdrom_device_info *cdi,
1934 struct cdrom_subchnl *subchnl, int mcn)
1936 struct cdrom_device_ops *cdo = cdi->ops;
1937 struct packet_command cgc;
1941 init_cdrom_command(&cgc, buffer, 16, CGC_DATA_READ);
1942 cgc.cmd[0] = GPCMD_READ_SUBCHANNEL;
1943 cgc.cmd[1] = 2; /* MSF addressing */
1944 cgc.cmd[2] = 0x40; /* request subQ data */
1945 cgc.cmd[3] = mcn ? 2 : 1;
1948 if ((ret = cdo->generic_packet(cdi, &cgc)))
1951 subchnl->cdsc_audiostatus = cgc.buffer[1];
1952 subchnl->cdsc_format = CDROM_MSF;
1953 subchnl->cdsc_ctrl = cgc.buffer[5] & 0xf;
1954 subchnl->cdsc_trk = cgc.buffer[6];
1955 subchnl->cdsc_ind = cgc.buffer[7];
1957 subchnl->cdsc_reladdr.msf.minute = cgc.buffer[13];
1958 subchnl->cdsc_reladdr.msf.second = cgc.buffer[14];
1959 subchnl->cdsc_reladdr.msf.frame = cgc.buffer[15];
1960 subchnl->cdsc_absaddr.msf.minute = cgc.buffer[9];
1961 subchnl->cdsc_absaddr.msf.second = cgc.buffer[10];
1962 subchnl->cdsc_absaddr.msf.frame = cgc.buffer[11];
1968 * Specific READ_10 interface
1970 static int cdrom_read_cd(struct cdrom_device_info *cdi,
1971 struct packet_command *cgc, int lba,
1972 int blocksize, int nblocks)
1974 struct cdrom_device_ops *cdo = cdi->ops;
1976 memset(&cgc->cmd, 0, sizeof(cgc->cmd));
1977 cgc->cmd[0] = GPCMD_READ_10;
1978 cgc->cmd[2] = (lba >> 24) & 0xff;
1979 cgc->cmd[3] = (lba >> 16) & 0xff;
1980 cgc->cmd[4] = (lba >> 8) & 0xff;
1981 cgc->cmd[5] = lba & 0xff;
1982 cgc->cmd[6] = (nblocks >> 16) & 0xff;
1983 cgc->cmd[7] = (nblocks >> 8) & 0xff;
1984 cgc->cmd[8] = nblocks & 0xff;
1985 cgc->buflen = blocksize * nblocks;
1986 return cdo->generic_packet(cdi, cgc);
1989 /* very generic interface for reading the various types of blocks */
1990 static int cdrom_read_block(struct cdrom_device_info *cdi,
1991 struct packet_command *cgc,
1992 int lba, int nblocks, int format, int blksize)
1994 struct cdrom_device_ops *cdo = cdi->ops;
1996 memset(&cgc->cmd, 0, sizeof(cgc->cmd));
1997 cgc->cmd[0] = GPCMD_READ_CD;
1998 /* expected sector size - cdda,mode1,etc. */
1999 cgc->cmd[1] = format << 2;
2000 /* starting address */
2001 cgc->cmd[2] = (lba >> 24) & 0xff;
2002 cgc->cmd[3] = (lba >> 16) & 0xff;
2003 cgc->cmd[4] = (lba >> 8) & 0xff;
2004 cgc->cmd[5] = lba & 0xff;
2005 /* number of blocks */
2006 cgc->cmd[6] = (nblocks >> 16) & 0xff;
2007 cgc->cmd[7] = (nblocks >> 8) & 0xff;
2008 cgc->cmd[8] = nblocks & 0xff;
2009 cgc->buflen = blksize * nblocks;
2011 /* set the header info returned */
2013 case CD_FRAMESIZE_RAW0 : cgc->cmd[9] = 0x58; break;
2014 case CD_FRAMESIZE_RAW1 : cgc->cmd[9] = 0x78; break;
2015 case CD_FRAMESIZE_RAW : cgc->cmd[9] = 0xf8; break;
2016 default : cgc->cmd[9] = 0x10;
2019 return cdo->generic_packet(cdi, cgc);
2022 static int cdrom_read_cdda_old(struct cdrom_device_info *cdi, __u8 __user *ubuf,
2023 int lba, int nframes)
2025 struct packet_command cgc;
2029 cdi->last_sense = 0;
2031 memset(&cgc, 0, sizeof(cgc));
2034 * start with will ra.nframes size, back down if alloc fails
2038 cgc.buffer = kmalloc(CD_FRAMESIZE_RAW * nr, GFP_KERNEL);
2048 if (!access_ok(VERIFY_WRITE, ubuf, nframes * CD_FRAMESIZE_RAW)) {
2053 cgc.data_direction = CGC_DATA_READ;
2054 while (nframes > 0) {
2058 ret = cdrom_read_block(cdi, &cgc, lba, nr, 1, CD_FRAMESIZE_RAW);
2061 if (__copy_to_user(ubuf, cgc.buffer, CD_FRAMESIZE_RAW * nr)) {
2065 ubuf += CD_FRAMESIZE_RAW * nr;
2074 static int cdrom_read_cdda_bpc(struct cdrom_device_info *cdi, __u8 __user *ubuf,
2075 int lba, int nframes)
2077 struct request_queue *q = cdi->disk->queue;
2086 rq = blk_get_request(q, READ, GFP_KERNEL);
2090 cdi->last_sense = 0;
2094 if (cdi->cdda_method == CDDA_BPC_SINGLE)
2096 if (nr * CD_FRAMESIZE_RAW > (q->max_sectors << 9))
2097 nr = (q->max_sectors << 9) / CD_FRAMESIZE_RAW;
2099 len = nr * CD_FRAMESIZE_RAW;
2101 ret = blk_rq_map_user(q, rq, ubuf, len);
2105 rq->cmd[0] = GPCMD_READ_CD;
2106 rq->cmd[1] = 1 << 2;
2107 rq->cmd[2] = (lba >> 24) & 0xff;
2108 rq->cmd[3] = (lba >> 16) & 0xff;
2109 rq->cmd[4] = (lba >> 8) & 0xff;
2110 rq->cmd[5] = lba & 0xff;
2111 rq->cmd[6] = (nr >> 16) & 0xff;
2112 rq->cmd[7] = (nr >> 8) & 0xff;
2113 rq->cmd[8] = nr & 0xff;
2117 rq->cmd_type = REQ_TYPE_BLOCK_PC;
2118 rq->timeout = 60 * HZ;
2121 if (blk_execute_rq(q, cdi->disk, rq, 0)) {
2122 struct request_sense *s = rq->sense;
2124 cdi->last_sense = s->sense_key;
2127 if (blk_rq_unmap_user(bio))
2138 blk_put_request(rq);
2142 static int cdrom_read_cdda(struct cdrom_device_info *cdi, __u8 __user *ubuf,
2143 int lba, int nframes)
2147 if (cdi->cdda_method == CDDA_OLD)
2148 return cdrom_read_cdda_old(cdi, ubuf, lba, nframes);
2152 * for anything else than success and io error, we need to retry
2154 ret = cdrom_read_cdda_bpc(cdi, ubuf, lba, nframes);
2155 if (!ret || ret != -EIO)
2159 * I've seen drives get sense 4/8/3 udma crc errors on multi
2160 * frame dma, so drop to single frame dma if we need to
2162 if (cdi->cdda_method == CDDA_BPC_FULL && nframes > 1) {
2163 printk("cdrom: dropping to single frame dma\n");
2164 cdi->cdda_method = CDDA_BPC_SINGLE;
2169 * so we have an io error of some sort with multi frame dma. if the
2170 * condition wasn't a hardware error
2171 * problems, not for any error
2173 if (cdi->last_sense != 0x04 && cdi->last_sense != 0x0b)
2176 printk("cdrom: dropping to old style cdda (sense=%x)\n", cdi->last_sense);
2177 cdi->cdda_method = CDDA_OLD;
2178 return cdrom_read_cdda_old(cdi, ubuf, lba, nframes);
2181 static int cdrom_ioctl_multisession(struct cdrom_device_info *cdi,
2184 struct cdrom_multisession ms_info;
2185 u8 requested_format;
2188 cdinfo(CD_DO_IOCTL, "entering CDROMMULTISESSION\n");
2190 if (!(cdi->ops->capability & CDC_MULTI_SESSION))
2193 if (copy_from_user(&ms_info, argp, sizeof(ms_info)))
2196 requested_format = ms_info.addr_format;
2197 if (requested_format != CDROM_MSF && requested_format != CDROM_LBA)
2199 ms_info.addr_format = CDROM_LBA;
2201 ret = cdi->ops->get_last_session(cdi, &ms_info);
2205 sanitize_format(&ms_info.addr, &ms_info.addr_format, requested_format);
2207 if (copy_to_user(argp, &ms_info, sizeof(ms_info)))
2210 cdinfo(CD_DO_IOCTL, "CDROMMULTISESSION successful\n");
2214 static int cdrom_ioctl_eject(struct cdrom_device_info *cdi)
2216 cdinfo(CD_DO_IOCTL, "entering CDROMEJECT\n");
2218 if (!CDROM_CAN(CDC_OPEN_TRAY))
2220 if (cdi->use_count != 1 || keeplocked)
2222 if (CDROM_CAN(CDC_LOCK)) {
2223 int ret = cdi->ops->lock_door(cdi, 0);
2228 return cdi->ops->tray_move(cdi, 1);
2231 static int cdrom_ioctl_closetray(struct cdrom_device_info *cdi)
2233 cdinfo(CD_DO_IOCTL, "entering CDROMCLOSETRAY\n");
2235 if (!CDROM_CAN(CDC_CLOSE_TRAY))
2237 return cdi->ops->tray_move(cdi, 0);
2240 static int cdrom_ioctl_eject_sw(struct cdrom_device_info *cdi,
2243 cdinfo(CD_DO_IOCTL, "entering CDROMEJECT_SW\n");
2245 if (!CDROM_CAN(CDC_OPEN_TRAY))
2250 cdi->options &= ~(CDO_AUTO_CLOSE | CDO_AUTO_EJECT);
2252 cdi->options |= CDO_AUTO_CLOSE | CDO_AUTO_EJECT;
2256 static int cdrom_ioctl_media_changed(struct cdrom_device_info *cdi,
2259 struct cdrom_changer_info *info;
2262 cdinfo(CD_DO_IOCTL, "entering CDROM_MEDIA_CHANGED\n");
2264 if (!CDROM_CAN(CDC_MEDIA_CHANGED))
2267 /* cannot select disc or select current disc */
2268 if (!CDROM_CAN(CDC_SELECT_DISC) || arg == CDSL_CURRENT)
2269 return media_changed(cdi, 1);
2271 if ((unsigned int)arg >= cdi->capacity)
2274 info = kmalloc(sizeof(*info), GFP_KERNEL);
2278 ret = cdrom_read_mech_status(cdi, info);
2280 ret = info->slots[arg].change;
2285 static int cdrom_ioctl_set_options(struct cdrom_device_info *cdi,
2288 cdinfo(CD_DO_IOCTL, "entering CDROM_SET_OPTIONS\n");
2291 * Options need to be in sync with capability.
2292 * Too late for that, so we have to check each one separately.
2295 case CDO_USE_FFLAGS:
2296 case CDO_CHECK_TYPE:
2299 if (!CDROM_CAN(CDC_LOCK))
2303 return cdi->options;
2304 /* default is basically CDO_[AUTO_CLOSE|AUTO_EJECT] */
2306 if (!CDROM_CAN(arg))
2309 cdi->options |= (int) arg;
2310 return cdi->options;
2313 static int cdrom_ioctl_clear_options(struct cdrom_device_info *cdi,
2316 cdinfo(CD_DO_IOCTL, "entering CDROM_CLEAR_OPTIONS\n");
2318 cdi->options &= ~(int) arg;
2319 return cdi->options;
2322 static int cdrom_ioctl_select_speed(struct cdrom_device_info *cdi,
2325 cdinfo(CD_DO_IOCTL, "entering CDROM_SELECT_SPEED\n");
2327 if (!CDROM_CAN(CDC_SELECT_SPEED))
2329 return cdi->ops->select_speed(cdi, arg);
2332 static int cdrom_ioctl_select_disc(struct cdrom_device_info *cdi,
2335 cdinfo(CD_DO_IOCTL, "entering CDROM_SELECT_DISC\n");
2337 if (!CDROM_CAN(CDC_SELECT_DISC))
2340 if (arg != CDSL_CURRENT && arg != CDSL_NONE) {
2341 if ((int)arg >= cdi->capacity)
2346 * ->select_disc is a hook to allow a driver-specific way of
2347 * seleting disc. However, since there is no equivalent hook for
2348 * cdrom_slot_status this may not actually be useful...
2350 if (cdi->ops->select_disc)
2351 return cdi->ops->select_disc(cdi, arg);
2353 cdinfo(CD_CHANGER, "Using generic cdrom_select_disc()\n");
2354 return cdrom_select_disc(cdi, arg);
2357 static int cdrom_ioctl_reset(struct cdrom_device_info *cdi,
2358 struct block_device *bdev)
2360 cdinfo(CD_DO_IOCTL, "entering CDROM_RESET\n");
2362 if (!capable(CAP_SYS_ADMIN))
2364 if (!CDROM_CAN(CDC_RESET))
2366 invalidate_bdev(bdev);
2367 return cdi->ops->reset(cdi);
2370 static int cdrom_ioctl_lock_door(struct cdrom_device_info *cdi,
2373 cdinfo(CD_DO_IOCTL, "%socking door.\n", arg ? "L" : "Unl");
2375 if (!CDROM_CAN(CDC_LOCK))
2376 return -EDRIVE_CANT_DO_THIS;
2378 keeplocked = arg ? 1 : 0;
2381 * Don't unlock the door on multiple opens by default, but allow
2384 if (cdi->use_count != 1 && !arg && !capable(CAP_SYS_ADMIN))
2386 return cdi->ops->lock_door(cdi, arg);
2389 static int cdrom_ioctl_debug(struct cdrom_device_info *cdi,
2392 cdinfo(CD_DO_IOCTL, "%sabling debug.\n", arg ? "En" : "Dis");
2394 if (!capable(CAP_SYS_ADMIN))
2396 debug = arg ? 1 : 0;
2400 static int cdrom_ioctl_get_capability(struct cdrom_device_info *cdi)
2402 cdinfo(CD_DO_IOCTL, "entering CDROM_GET_CAPABILITY\n");
2403 return (cdi->ops->capability & ~cdi->mask);
2407 * The following function is implemented, although very few audio
2408 * discs give Universal Product Code information, which should just be
2409 * the Medium Catalog Number on the box. Note, that the way the code
2410 * is written on the CD is /not/ uniform across all discs!
2412 static int cdrom_ioctl_get_mcn(struct cdrom_device_info *cdi,
2415 struct cdrom_mcn mcn;
2418 cdinfo(CD_DO_IOCTL, "entering CDROM_GET_MCN\n");
2420 if (!(cdi->ops->capability & CDC_MCN))
2422 ret = cdi->ops->get_mcn(cdi, &mcn);
2426 if (copy_to_user(argp, &mcn, sizeof(mcn)))
2428 cdinfo(CD_DO_IOCTL, "CDROM_GET_MCN successful\n");
2432 static int cdrom_ioctl_drive_status(struct cdrom_device_info *cdi,
2435 cdinfo(CD_DO_IOCTL, "entering CDROM_DRIVE_STATUS\n");
2437 if (!(cdi->ops->capability & CDC_DRIVE_STATUS))
2439 if (!CDROM_CAN(CDC_SELECT_DISC) ||
2440 (arg == CDSL_CURRENT || arg == CDSL_NONE))
2441 return cdi->ops->drive_status(cdi, CDSL_CURRENT);
2442 if (((int)arg >= cdi->capacity))
2444 return cdrom_slot_status(cdi, arg);
2448 * Ok, this is where problems start. The current interface for the
2449 * CDROM_DISC_STATUS ioctl is flawed. It makes the false assumption that
2450 * CDs are all CDS_DATA_1 or all CDS_AUDIO, etc. Unfortunatly, while this
2451 * is often the case, it is also very common for CDs to have some tracks
2452 * with data, and some tracks with audio. Just because I feel like it,
2453 * I declare the following to be the best way to cope. If the CD has ANY
2454 * data tracks on it, it will be returned as a data CD. If it has any XA
2455 * tracks, I will return it as that. Now I could simplify this interface
2456 * by combining these returns with the above, but this more clearly
2457 * demonstrates the problem with the current interface. Too bad this
2458 * wasn't designed to use bitmasks... -Erik
2460 * Well, now we have the option CDS_MIXED: a mixed-type CD.
2461 * User level programmers might feel the ioctl is not very useful.
2464 static int cdrom_ioctl_disc_status(struct cdrom_device_info *cdi)
2468 cdinfo(CD_DO_IOCTL, "entering CDROM_DISC_STATUS\n");
2470 cdrom_count_tracks(cdi, &tracks);
2472 return tracks.error;
2474 /* Policy mode on */
2475 if (tracks.audio > 0) {
2476 if (!tracks.data && !tracks.cdi && !tracks.xa)
2486 if (tracks.data > 0)
2488 /* Policy mode off */
2490 cdinfo(CD_WARNING,"This disc doesn't have any tracks I recognize!\n");
2494 static int cdrom_ioctl_changer_nslots(struct cdrom_device_info *cdi)
2496 cdinfo(CD_DO_IOCTL, "entering CDROM_CHANGER_NSLOTS\n");
2497 return cdi->capacity;
2500 static int cdrom_ioctl_get_subchnl(struct cdrom_device_info *cdi,
2503 struct cdrom_subchnl q;
2507 /* cdinfo(CD_DO_IOCTL,"entering CDROMSUBCHNL\n");*/
2509 if (!CDROM_CAN(CDC_PLAY_AUDIO))
2511 if (copy_from_user(&q, argp, sizeof(q)))
2514 requested = q.cdsc_format;
2515 if (requested != CDROM_MSF && requested != CDROM_LBA)
2517 q.cdsc_format = CDROM_MSF;
2519 ret = cdi->ops->audio_ioctl(cdi, CDROMSUBCHNL, &q);
2523 back = q.cdsc_format; /* local copy */
2524 sanitize_format(&q.cdsc_absaddr, &back, requested);
2525 sanitize_format(&q.cdsc_reladdr, &q.cdsc_format, requested);
2527 if (copy_to_user(argp, &q, sizeof(q)))
2529 /* cdinfo(CD_DO_IOCTL, "CDROMSUBCHNL successful\n"); */
2533 static int cdrom_ioctl_read_tochdr(struct cdrom_device_info *cdi,
2536 struct cdrom_tochdr header;
2539 /* cdinfo(CD_DO_IOCTL, "entering CDROMREADTOCHDR\n"); */
2541 if (!CDROM_CAN(CDC_PLAY_AUDIO))
2543 if (copy_from_user(&header, argp, sizeof(header)))
2546 ret = cdi->ops->audio_ioctl(cdi, CDROMREADTOCHDR, &header);
2550 if (copy_to_user(argp, &header, sizeof(header)))
2552 /* cdinfo(CD_DO_IOCTL, "CDROMREADTOCHDR successful\n"); */
2556 static int cdrom_ioctl_read_tocentry(struct cdrom_device_info *cdi,
2559 struct cdrom_tocentry entry;
2560 u8 requested_format;
2563 /* cdinfo(CD_DO_IOCTL, "entering CDROMREADTOCENTRY\n"); */
2565 if (!CDROM_CAN(CDC_PLAY_AUDIO))
2567 if (copy_from_user(&entry, argp, sizeof(entry)))
2570 requested_format = entry.cdte_format;
2571 if (requested_format != CDROM_MSF && requested_format != CDROM_LBA)
2573 /* make interface to low-level uniform */
2574 entry.cdte_format = CDROM_MSF;
2575 ret = cdi->ops->audio_ioctl(cdi, CDROMREADTOCENTRY, &entry);
2578 sanitize_format(&entry.cdte_addr, &entry.cdte_format, requested_format);
2580 if (copy_to_user(argp, &entry, sizeof(entry)))
2582 /* cdinfo(CD_DO_IOCTL, "CDROMREADTOCENTRY successful\n"); */
2586 static int cdrom_ioctl_play_msf(struct cdrom_device_info *cdi,
2589 struct cdrom_msf msf;
2591 cdinfo(CD_DO_IOCTL, "entering CDROMPLAYMSF\n");
2593 if (!CDROM_CAN(CDC_PLAY_AUDIO))
2595 if (copy_from_user(&msf, argp, sizeof(msf)))
2597 return cdi->ops->audio_ioctl(cdi, CDROMPLAYMSF, &msf);
2600 static int cdrom_ioctl_play_trkind(struct cdrom_device_info *cdi,
2606 cdinfo(CD_DO_IOCTL, "entering CDROMPLAYTRKIND\n");
2608 if (!CDROM_CAN(CDC_PLAY_AUDIO))
2610 if (copy_from_user(&ti, argp, sizeof(ti)))
2613 ret = check_for_audio_disc(cdi, cdi->ops);
2616 return cdi->ops->audio_ioctl(cdi, CDROMPLAYTRKIND, &ti);
2618 static int cdrom_ioctl_volctrl(struct cdrom_device_info *cdi,
2621 struct cdrom_volctrl volume;
2623 cdinfo(CD_DO_IOCTL, "entering CDROMVOLCTRL\n");
2625 if (!CDROM_CAN(CDC_PLAY_AUDIO))
2627 if (copy_from_user(&volume, argp, sizeof(volume)))
2629 return cdi->ops->audio_ioctl(cdi, CDROMVOLCTRL, &volume);
2632 static int cdrom_ioctl_volread(struct cdrom_device_info *cdi,
2635 struct cdrom_volctrl volume;
2638 cdinfo(CD_DO_IOCTL, "entering CDROMVOLREAD\n");
2640 if (!CDROM_CAN(CDC_PLAY_AUDIO))
2643 ret = cdi->ops->audio_ioctl(cdi, CDROMVOLREAD, &volume);
2647 if (copy_to_user(argp, &volume, sizeof(volume)))
2652 static int cdrom_ioctl_audioctl(struct cdrom_device_info *cdi,
2657 cdinfo(CD_DO_IOCTL, "doing audio ioctl (start/stop/pause/resume)\n");
2659 if (!CDROM_CAN(CDC_PLAY_AUDIO))
2661 ret = check_for_audio_disc(cdi, cdi->ops);
2664 return cdi->ops->audio_ioctl(cdi, cmd, NULL);
2668 * Just about every imaginable ioctl is supported in the Uniform layer
2670 * ATAPI / SCSI specific code now mainly resides in mmc_ioctl().
2672 int cdrom_ioctl(struct file * file, struct cdrom_device_info *cdi,
2673 struct inode *ip, unsigned int cmd, unsigned long arg)
2675 void __user *argp = (void __user *)arg;
2677 struct gendisk *disk = ip->i_bdev->bd_disk;
2680 * Try the generic SCSI command ioctl's first.
2682 ret = scsi_cmd_ioctl(file, disk->queue, disk, cmd, argp);
2687 case CDROMMULTISESSION:
2688 return cdrom_ioctl_multisession(cdi, argp);
2690 return cdrom_ioctl_eject(cdi);
2691 case CDROMCLOSETRAY:
2692 return cdrom_ioctl_closetray(cdi);
2694 return cdrom_ioctl_eject_sw(cdi, arg);
2695 case CDROM_MEDIA_CHANGED:
2696 return cdrom_ioctl_media_changed(cdi, arg);
2697 case CDROM_SET_OPTIONS:
2698 return cdrom_ioctl_set_options(cdi, arg);
2699 case CDROM_CLEAR_OPTIONS:
2700 return cdrom_ioctl_clear_options(cdi, arg);
2701 case CDROM_SELECT_SPEED:
2702 return cdrom_ioctl_select_speed(cdi, arg);
2703 case CDROM_SELECT_DISC:
2704 return cdrom_ioctl_select_disc(cdi, arg);
2706 return cdrom_ioctl_reset(cdi, ip->i_bdev);
2707 case CDROM_LOCKDOOR:
2708 return cdrom_ioctl_lock_door(cdi, arg);
2710 return cdrom_ioctl_debug(cdi, arg);
2711 case CDROM_GET_CAPABILITY:
2712 return cdrom_ioctl_get_capability(cdi);
2714 return cdrom_ioctl_get_mcn(cdi, argp);
2715 case CDROM_DRIVE_STATUS:
2716 return cdrom_ioctl_drive_status(cdi, arg);
2717 case CDROM_DISC_STATUS:
2718 return cdrom_ioctl_disc_status(cdi);
2719 case CDROM_CHANGER_NSLOTS:
2720 return cdrom_ioctl_changer_nslots(cdi);
2724 * Use the ioctls that are implemented through the generic_packet()
2725 * interface. this may look at bit funny, but if -ENOTTY is
2726 * returned that particular ioctl is not implemented and we
2727 * let it go through the device specific ones.
2729 if (CDROM_CAN(CDC_GENERIC_PACKET)) {
2730 ret = mmc_ioctl(cdi, cmd, arg);
2736 * Note: most of the cdinfo() calls are commented out here,
2737 * because they fill up the sys log when CD players poll
2742 return cdrom_ioctl_get_subchnl(cdi, argp);
2743 case CDROMREADTOCHDR:
2744 return cdrom_ioctl_read_tochdr(cdi, argp);
2745 case CDROMREADTOCENTRY:
2746 return cdrom_ioctl_read_tocentry(cdi, argp);
2748 return cdrom_ioctl_play_msf(cdi, argp);
2749 case CDROMPLAYTRKIND:
2750 return cdrom_ioctl_play_trkind(cdi, argp);
2752 return cdrom_ioctl_volctrl(cdi, argp);
2754 return cdrom_ioctl_volread(cdi, argp);
2759 return cdrom_ioctl_audioctl(cdi, cmd);
2766 * Required when we need to use READ_10 to issue other than 2048 block
2769 static int cdrom_switch_blocksize(struct cdrom_device_info *cdi, int size)
2771 struct cdrom_device_ops *cdo = cdi->ops;
2772 struct packet_command cgc;
2773 struct modesel_head mh;
2775 memset(&mh, 0, sizeof(mh));
2776 mh.block_desc_length = 0x08;
2777 mh.block_length_med = (size >> 8) & 0xff;
2778 mh.block_length_lo = size & 0xff;
2780 memset(&cgc, 0, sizeof(cgc));
2782 cgc.cmd[1] = 1 << 4;
2784 cgc.buflen = sizeof(mh);
2785 cgc.buffer = (char *) &mh;
2786 cgc.data_direction = CGC_DATA_WRITE;
2787 mh.block_desc_length = 0x08;
2788 mh.block_length_med = (size >> 8) & 0xff;
2789 mh.block_length_lo = size & 0xff;
2791 return cdo->generic_packet(cdi, &cgc);
2794 static int mmc_ioctl(struct cdrom_device_info *cdi, unsigned int cmd,
2797 struct cdrom_device_ops *cdo = cdi->ops;
2798 struct packet_command cgc;
2799 struct request_sense sense;
2800 unsigned char buffer[32];
2803 memset(&cgc, 0, sizeof(cgc));
2805 /* build a unified command and queue it through
2806 cdo->generic_packet() */
2809 case CDROMREADMODE1:
2810 case CDROMREADMODE2: {
2811 struct cdrom_msf msf;
2812 int blocksize = 0, format = 0, lba;
2816 blocksize = CD_FRAMESIZE_RAW;
2818 case CDROMREADMODE1:
2819 blocksize = CD_FRAMESIZE;
2822 case CDROMREADMODE2:
2823 blocksize = CD_FRAMESIZE_RAW0;
2826 IOCTL_IN(arg, struct cdrom_msf, msf);
2827 lba = msf_to_lba(msf.cdmsf_min0,msf.cdmsf_sec0,msf.cdmsf_frame0);
2828 /* FIXME: we need upper bound checking, too!! */
2831 cgc.buffer = kmalloc(blocksize, GFP_KERNEL);
2832 if (cgc.buffer == NULL)
2834 memset(&sense, 0, sizeof(sense));
2836 cgc.data_direction = CGC_DATA_READ;
2837 ret = cdrom_read_block(cdi, &cgc, lba, 1, format, blocksize);
2838 if (ret && sense.sense_key==0x05 && sense.asc==0x20 && sense.ascq==0x00) {
2840 * SCSI-II devices are not required to support
2841 * READ_CD, so let's try switching block size
2843 /* FIXME: switch back again... */
2844 if ((ret = cdrom_switch_blocksize(cdi, blocksize))) {
2849 ret = cdrom_read_cd(cdi, &cgc, lba, blocksize, 1);
2850 ret |= cdrom_switch_blocksize(cdi, blocksize);
2852 if (!ret && copy_to_user((char __user *)arg, cgc.buffer, blocksize))
2857 case CDROMREADAUDIO: {
2858 struct cdrom_read_audio ra;
2861 IOCTL_IN(arg, struct cdrom_read_audio, ra);
2863 if (ra.addr_format == CDROM_MSF)
2864 lba = msf_to_lba(ra.addr.msf.minute,
2867 else if (ra.addr_format == CDROM_LBA)
2872 /* FIXME: we need upper bound checking, too!! */
2873 if (lba < 0 || ra.nframes <= 0 || ra.nframes > CD_FRAMES)
2876 return cdrom_read_cdda(cdi, ra.buf, lba, ra.nframes);
2878 case CDROMSUBCHNL: {
2879 struct cdrom_subchnl q;
2880 u_char requested, back;
2881 IOCTL_IN(arg, struct cdrom_subchnl, q);
2882 requested = q.cdsc_format;
2883 if (!((requested == CDROM_MSF) ||
2884 (requested == CDROM_LBA)))
2886 q.cdsc_format = CDROM_MSF;
2887 if ((ret = cdrom_read_subchannel(cdi, &q, 0)))
2889 back = q.cdsc_format; /* local copy */
2890 sanitize_format(&q.cdsc_absaddr, &back, requested);
2891 sanitize_format(&q.cdsc_reladdr, &q.cdsc_format, requested);
2892 IOCTL_OUT(arg, struct cdrom_subchnl, q);
2893 /* cdinfo(CD_DO_IOCTL, "CDROMSUBCHNL successful\n"); */
2896 case CDROMPLAYMSF: {
2897 struct cdrom_msf msf;
2898 cdinfo(CD_DO_IOCTL, "entering CDROMPLAYMSF\n");
2899 IOCTL_IN(arg, struct cdrom_msf, msf);
2900 cgc.cmd[0] = GPCMD_PLAY_AUDIO_MSF;
2901 cgc.cmd[3] = msf.cdmsf_min0;
2902 cgc.cmd[4] = msf.cdmsf_sec0;
2903 cgc.cmd[5] = msf.cdmsf_frame0;
2904 cgc.cmd[6] = msf.cdmsf_min1;
2905 cgc.cmd[7] = msf.cdmsf_sec1;
2906 cgc.cmd[8] = msf.cdmsf_frame1;
2907 cgc.data_direction = CGC_DATA_NONE;
2908 return cdo->generic_packet(cdi, &cgc);
2910 case CDROMPLAYBLK: {
2911 struct cdrom_blk blk;
2912 cdinfo(CD_DO_IOCTL, "entering CDROMPLAYBLK\n");
2913 IOCTL_IN(arg, struct cdrom_blk, blk);
2914 cgc.cmd[0] = GPCMD_PLAY_AUDIO_10;
2915 cgc.cmd[2] = (blk.from >> 24) & 0xff;
2916 cgc.cmd[3] = (blk.from >> 16) & 0xff;
2917 cgc.cmd[4] = (blk.from >> 8) & 0xff;
2918 cgc.cmd[5] = blk.from & 0xff;
2919 cgc.cmd[7] = (blk.len >> 8) & 0xff;
2920 cgc.cmd[8] = blk.len & 0xff;
2921 cgc.data_direction = CGC_DATA_NONE;
2922 return cdo->generic_packet(cdi, &cgc);
2925 case CDROMVOLREAD: {
2926 struct cdrom_volctrl volctrl;
2927 char mask[sizeof(buffer)];
2928 unsigned short offset;
2930 cdinfo(CD_DO_IOCTL, "entering CDROMVOLUME\n");
2932 IOCTL_IN(arg, struct cdrom_volctrl, volctrl);
2934 cgc.buffer = buffer;
2936 if ((ret = cdrom_mode_sense(cdi, &cgc, GPMODE_AUDIO_CTL_PAGE, 0)))
2939 /* originally the code depended on buffer[1] to determine
2940 how much data is available for transfer. buffer[1] is
2941 unfortunately ambigious and the only reliable way seem
2942 to be to simply skip over the block descriptor... */
2943 offset = 8 + be16_to_cpu(*(__be16 *)(buffer+6));
2945 if (offset + 16 > sizeof(buffer))
2948 if (offset + 16 > cgc.buflen) {
2949 cgc.buflen = offset+16;
2950 ret = cdrom_mode_sense(cdi, &cgc,
2951 GPMODE_AUDIO_CTL_PAGE, 0);
2957 if ((buffer[offset] & 0x3f) != GPMODE_AUDIO_CTL_PAGE ||
2958 buffer[offset+1] < 14)
2961 /* now we have the current volume settings. if it was only
2962 a CDROMVOLREAD, return these values */
2963 if (cmd == CDROMVOLREAD) {
2964 volctrl.channel0 = buffer[offset+9];
2965 volctrl.channel1 = buffer[offset+11];
2966 volctrl.channel2 = buffer[offset+13];
2967 volctrl.channel3 = buffer[offset+15];
2968 IOCTL_OUT(arg, struct cdrom_volctrl, volctrl);
2972 /* get the volume mask */
2974 if ((ret = cdrom_mode_sense(cdi, &cgc,
2975 GPMODE_AUDIO_CTL_PAGE, 1)))
2978 buffer[offset+9] = volctrl.channel0 & mask[offset+9];
2979 buffer[offset+11] = volctrl.channel1 & mask[offset+11];
2980 buffer[offset+13] = volctrl.channel2 & mask[offset+13];
2981 buffer[offset+15] = volctrl.channel3 & mask[offset+15];
2984 cgc.buffer = buffer + offset - 8;
2985 memset(cgc.buffer, 0, 8);
2986 return cdrom_mode_select(cdi, &cgc);
2991 cdinfo(CD_DO_IOCTL, "entering CDROMSTART/CDROMSTOP\n");
2992 cgc.cmd[0] = GPCMD_START_STOP_UNIT;
2994 cgc.cmd[4] = (cmd == CDROMSTART) ? 1 : 0;
2995 cgc.data_direction = CGC_DATA_NONE;
2996 return cdo->generic_packet(cdi, &cgc);
3001 cdinfo(CD_DO_IOCTL, "entering CDROMPAUSE/CDROMRESUME\n");
3002 cgc.cmd[0] = GPCMD_PAUSE_RESUME;
3003 cgc.cmd[8] = (cmd == CDROMRESUME) ? 1 : 0;
3004 cgc.data_direction = CGC_DATA_NONE;
3005 return cdo->generic_packet(cdi, &cgc);
3008 case DVD_READ_STRUCT: {
3010 int size = sizeof(dvd_struct);
3011 if (!CDROM_CAN(CDC_DVD))
3013 if ((s = kmalloc(size, GFP_KERNEL)) == NULL)
3015 cdinfo(CD_DO_IOCTL, "entering DVD_READ_STRUCT\n");
3016 if (copy_from_user(s, (dvd_struct __user *)arg, size)) {
3020 if ((ret = dvd_read_struct(cdi, s))) {
3024 if (copy_to_user((dvd_struct __user *)arg, s, size))
3032 if (!CDROM_CAN(CDC_DVD))
3034 cdinfo(CD_DO_IOCTL, "entering DVD_AUTH\n");
3035 IOCTL_IN(arg, dvd_authinfo, ai);
3036 if ((ret = dvd_do_auth (cdi, &ai)))
3038 IOCTL_OUT(arg, dvd_authinfo, ai);
3042 case CDROM_NEXT_WRITABLE: {
3044 cdinfo(CD_DO_IOCTL, "entering CDROM_NEXT_WRITABLE\n");
3045 if ((ret = cdrom_get_next_writable(cdi, &next)))
3047 IOCTL_OUT(arg, long, next);
3050 case CDROM_LAST_WRITTEN: {
3052 cdinfo(CD_DO_IOCTL, "entering CDROM_LAST_WRITTEN\n");
3053 if ((ret = cdrom_get_last_written(cdi, &last)))
3055 IOCTL_OUT(arg, long, last);
3063 static int cdrom_get_track_info(struct cdrom_device_info *cdi, __u16 track, __u8 type,
3064 track_information *ti)
3066 struct cdrom_device_ops *cdo = cdi->ops;
3067 struct packet_command cgc;
3070 init_cdrom_command(&cgc, ti, 8, CGC_DATA_READ);
3071 cgc.cmd[0] = GPCMD_READ_TRACK_RZONE_INFO;
3072 cgc.cmd[1] = type & 3;
3073 cgc.cmd[4] = (track & 0xff00) >> 8;
3074 cgc.cmd[5] = track & 0xff;
3078 if ((ret = cdo->generic_packet(cdi, &cgc)))
3081 buflen = be16_to_cpu(ti->track_information_length) +
3082 sizeof(ti->track_information_length);
3084 if (buflen > sizeof(track_information))
3085 buflen = sizeof(track_information);
3087 cgc.cmd[8] = cgc.buflen = buflen;
3088 if ((ret = cdo->generic_packet(cdi, &cgc)))
3091 /* return actual fill size */
3095 /* requires CD R/RW */
3096 static int cdrom_get_disc_info(struct cdrom_device_info *cdi, disc_information *di)
3098 struct cdrom_device_ops *cdo = cdi->ops;
3099 struct packet_command cgc;
3102 /* set up command and get the disc info */
3103 init_cdrom_command(&cgc, di, sizeof(*di), CGC_DATA_READ);
3104 cgc.cmd[0] = GPCMD_READ_DISC_INFO;
3105 cgc.cmd[8] = cgc.buflen = 2;
3108 if ((ret = cdo->generic_packet(cdi, &cgc)))
3111 /* not all drives have the same disc_info length, so requeue
3112 * packet with the length the drive tells us it can supply
3114 buflen = be16_to_cpu(di->disc_information_length) +
3115 sizeof(di->disc_information_length);
3117 if (buflen > sizeof(disc_information))
3118 buflen = sizeof(disc_information);
3120 cgc.cmd[8] = cgc.buflen = buflen;
3121 if ((ret = cdo->generic_packet(cdi, &cgc)))
3124 /* return actual fill size */
3128 /* return the last written block on the CD-R media. this is for the udf
3130 int cdrom_get_last_written(struct cdrom_device_info *cdi, long *last_written)
3132 struct cdrom_tocentry toc;
3133 disc_information di;
3134 track_information ti;
3136 int ret = -1, ti_size;
3138 if (!CDROM_CAN(CDC_GENERIC_PACKET))
3141 ret = cdrom_get_disc_info(cdi, &di);
3142 if (ret < (int)(offsetof(typeof(di), last_track_lsb)
3143 + sizeof(di.last_track_lsb)))
3146 /* if unit didn't return msb, it's zeroed by cdrom_get_disc_info */
3147 last_track = (di.last_track_msb << 8) | di.last_track_lsb;
3148 ti_size = cdrom_get_track_info(cdi, last_track, 1, &ti);
3149 if (ti_size < (int)offsetof(typeof(ti), track_start))
3152 /* if this track is blank, try the previous. */
3157 ti_size = cdrom_get_track_info(cdi, last_track, 1, &ti);
3160 if (ti_size < (int)(offsetof(typeof(ti), track_size)
3161 + sizeof(ti.track_size)))
3164 /* if last recorded field is valid, return it. */
3165 if (ti.lra_v && ti_size >= (int)(offsetof(typeof(ti), last_rec_address)
3166 + sizeof(ti.last_rec_address))) {
3167 *last_written = be32_to_cpu(ti.last_rec_address);
3169 /* make it up instead */
3170 *last_written = be32_to_cpu(ti.track_start) +
3171 be32_to_cpu(ti.track_size);
3173 *last_written -= (be32_to_cpu(ti.free_blocks) + 7);
3177 /* this is where we end up if the drive either can't do a
3178 GPCMD_READ_DISC_INFO or GPCMD_READ_TRACK_RZONE_INFO or if
3179 it doesn't give enough information or fails. then we return
3180 the toc contents. */
3182 toc.cdte_format = CDROM_MSF;
3183 toc.cdte_track = CDROM_LEADOUT;
3184 if ((ret = cdi->ops->audio_ioctl(cdi, CDROMREADTOCENTRY, &toc)))
3186 sanitize_format(&toc.cdte_addr, &toc.cdte_format, CDROM_LBA);
3187 *last_written = toc.cdte_addr.lba;
3191 /* return the next writable block. also for udf file system. */
3192 static int cdrom_get_next_writable(struct cdrom_device_info *cdi, long *next_writable)
3194 disc_information di;
3195 track_information ti;
3199 if (!CDROM_CAN(CDC_GENERIC_PACKET))
3200 goto use_last_written;
3202 ret = cdrom_get_disc_info(cdi, &di);
3203 if (ret < 0 || ret < offsetof(typeof(di), last_track_lsb)
3204 + sizeof(di.last_track_lsb))
3205 goto use_last_written;
3207 /* if unit didn't return msb, it's zeroed by cdrom_get_disc_info */
3208 last_track = (di.last_track_msb << 8) | di.last_track_lsb;
3209 ti_size = cdrom_get_track_info(cdi, last_track, 1, &ti);
3210 if (ti_size < 0 || ti_size < offsetof(typeof(ti), track_start))
3211 goto use_last_written;
3213 /* if this track is blank, try the previous. */
3215 if (last_track == 1)
3216 goto use_last_written;
3218 ti_size = cdrom_get_track_info(cdi, last_track, 1, &ti);
3220 goto use_last_written;
3223 /* if next recordable address field is valid, use it. */
3224 if (ti.nwa_v && ti_size >= offsetof(typeof(ti), next_writable)
3225 + sizeof(ti.next_writable)) {
3226 *next_writable = be32_to_cpu(ti.next_writable);
3231 if ((ret = cdrom_get_last_written(cdi, next_writable))) {
3235 *next_writable += 7;
3240 EXPORT_SYMBOL(cdrom_get_last_written);
3241 EXPORT_SYMBOL(register_cdrom);
3242 EXPORT_SYMBOL(unregister_cdrom);
3243 EXPORT_SYMBOL(cdrom_open);
3244 EXPORT_SYMBOL(cdrom_release);
3245 EXPORT_SYMBOL(cdrom_ioctl);
3246 EXPORT_SYMBOL(cdrom_media_changed);
3247 EXPORT_SYMBOL(cdrom_number_of_slots);
3248 EXPORT_SYMBOL(cdrom_mode_select);
3249 EXPORT_SYMBOL(cdrom_mode_sense);
3250 EXPORT_SYMBOL(init_cdrom_command);
3251 EXPORT_SYMBOL(cdrom_get_media_event);
3253 #ifdef CONFIG_SYSCTL
3255 #define CDROM_STR_SIZE 1000
3257 static struct cdrom_sysctl_settings {
3258 char info[CDROM_STR_SIZE]; /* general info */
3259 int autoclose; /* close tray upon mount, etc */
3260 int autoeject; /* eject on umount */
3261 int debug; /* turn on debugging messages */
3262 int lock; /* lock the door on device open */
3263 int check; /* check media type */
3264 } cdrom_sysctl_settings;
3266 enum cdrom_print_option {
3273 static int cdrom_print_info(const char *header, int val, char *info,
3274 int *pos, enum cdrom_print_option option)
3276 const int max_size = sizeof(cdrom_sysctl_settings.info);
3277 struct cdrom_device_info *cdi;
3280 ret = scnprintf(info + *pos, max_size - *pos, header);
3286 list_for_each_entry(cdi, &cdrom_list, list) {
3289 ret = scnprintf(info + *pos, max_size - *pos,
3293 ret = scnprintf(info + *pos, max_size - *pos,
3294 "\t%d", cdi->speed);
3297 ret = scnprintf(info + *pos, max_size - *pos,
3298 "\t%d", cdi->capacity);
3300 case CTL_CAPABILITY:
3301 ret = scnprintf(info + *pos, max_size - *pos,
3302 "\t%d", CDROM_CAN(val) != 0);
3305 printk(KERN_INFO "cdrom: invalid option%d\n", option);
3316 static int cdrom_sysctl_info(ctl_table *ctl, int write, struct file * filp,
3317 void __user *buffer, size_t *lenp, loff_t *ppos)
3320 char *info = cdrom_sysctl_settings.info;
3321 const int max_size = sizeof(cdrom_sysctl_settings.info);
3323 if (!*lenp || (*ppos && !write)) {
3328 mutex_lock(&cdrom_mutex);
3330 pos = sprintf(info, "CD-ROM information, " VERSION "\n");
3332 if (cdrom_print_info("\ndrive name:\t", 0, info, &pos, CTL_NAME))
3334 if (cdrom_print_info("\ndrive speed:\t", 0, info, &pos, CTL_SPEED))
3336 if (cdrom_print_info("\ndrive # of slots:", 0, info, &pos, CTL_SLOTS))
3338 if (cdrom_print_info("\nCan close tray:\t",
3339 CDC_CLOSE_TRAY, info, &pos, CTL_CAPABILITY))
3341 if (cdrom_print_info("\nCan open tray:\t",
3342 CDC_OPEN_TRAY, info, &pos, CTL_CAPABILITY))
3344 if (cdrom_print_info("\nCan lock tray:\t",
3345 CDC_LOCK, info, &pos, CTL_CAPABILITY))
3347 if (cdrom_print_info("\nCan change speed:",
3348 CDC_SELECT_SPEED, info, &pos, CTL_CAPABILITY))
3350 if (cdrom_print_info("\nCan select disk:",
3351 CDC_SELECT_DISC, info, &pos, CTL_CAPABILITY))
3353 if (cdrom_print_info("\nCan read multisession:",
3354 CDC_MULTI_SESSION, info, &pos, CTL_CAPABILITY))
3356 if (cdrom_print_info("\nCan read MCN:\t",
3357 CDC_MCN, info, &pos, CTL_CAPABILITY))
3359 if (cdrom_print_info("\nReports media changed:",
3360 CDC_MEDIA_CHANGED, info, &pos, CTL_CAPABILITY))
3362 if (cdrom_print_info("\nCan play audio:\t",
3363 CDC_PLAY_AUDIO, info, &pos, CTL_CAPABILITY))
3365 if (cdrom_print_info("\nCan write CD-R:\t",
3366 CDC_CD_R, info, &pos, CTL_CAPABILITY))
3368 if (cdrom_print_info("\nCan write CD-RW:",
3369 CDC_CD_RW, info, &pos, CTL_CAPABILITY))
3371 if (cdrom_print_info("\nCan read DVD:\t",
3372 CDC_DVD, info, &pos, CTL_CAPABILITY))
3374 if (cdrom_print_info("\nCan write DVD-R:",
3375 CDC_DVD_R, info, &pos, CTL_CAPABILITY))
3377 if (cdrom_print_info("\nCan write DVD-RAM:",
3378 CDC_DVD_RAM, info, &pos, CTL_CAPABILITY))
3380 if (cdrom_print_info("\nCan read MRW:\t",
3381 CDC_MRW, info, &pos, CTL_CAPABILITY))
3383 if (cdrom_print_info("\nCan write MRW:\t",
3384 CDC_MRW_W, info, &pos, CTL_CAPABILITY))
3386 if (cdrom_print_info("\nCan write RAM:\t",
3387 CDC_RAM, info, &pos, CTL_CAPABILITY))
3389 if (!scnprintf(info + pos, max_size - pos, "\n\n"))
3392 mutex_unlock(&cdrom_mutex);
3393 return proc_dostring(ctl, write, filp, buffer, lenp, ppos);
3395 printk(KERN_INFO "cdrom: info buffer too small\n");
3399 /* Unfortunately, per device settings are not implemented through
3400 procfs/sysctl yet. When they are, this will naturally disappear. For now
3401 just update all drives. Later this will become the template on which
3402 new registered drives will be based. */
3403 static void cdrom_update_settings(void)
3405 struct cdrom_device_info *cdi;
3407 mutex_lock(&cdrom_mutex);
3408 list_for_each_entry(cdi, &cdrom_list, list) {
3409 if (autoclose && CDROM_CAN(CDC_CLOSE_TRAY))
3410 cdi->options |= CDO_AUTO_CLOSE;
3411 else if (!autoclose)
3412 cdi->options &= ~CDO_AUTO_CLOSE;
3413 if (autoeject && CDROM_CAN(CDC_OPEN_TRAY))
3414 cdi->options |= CDO_AUTO_EJECT;
3415 else if (!autoeject)
3416 cdi->options &= ~CDO_AUTO_EJECT;
3417 if (lockdoor && CDROM_CAN(CDC_LOCK))
3418 cdi->options |= CDO_LOCK;
3420 cdi->options &= ~CDO_LOCK;
3421 if (check_media_type)
3422 cdi->options |= CDO_CHECK_TYPE;
3424 cdi->options &= ~CDO_CHECK_TYPE;
3426 mutex_unlock(&cdrom_mutex);
3429 static int cdrom_sysctl_handler(ctl_table *ctl, int write, struct file * filp,
3430 void __user *buffer, size_t *lenp, loff_t *ppos)
3434 ret = proc_dointvec(ctl, write, filp, buffer, lenp, ppos);
3438 /* we only care for 1 or 0. */
3439 autoclose = !!cdrom_sysctl_settings.autoclose;
3440 autoeject = !!cdrom_sysctl_settings.autoeject;
3441 debug = !!cdrom_sysctl_settings.debug;
3442 lockdoor = !!cdrom_sysctl_settings.lock;
3443 check_media_type = !!cdrom_sysctl_settings.check;
3445 /* update the option flags according to the changes. we
3446 don't have per device options through sysctl yet,
3447 but we will have and then this will disappear. */
3448 cdrom_update_settings();
3454 /* Place files in /proc/sys/dev/cdrom */
3455 static ctl_table cdrom_table[] = {
3458 .data = &cdrom_sysctl_settings.info,
3459 .maxlen = CDROM_STR_SIZE,
3461 .proc_handler = &cdrom_sysctl_info,
3464 .procname = "autoclose",
3465 .data = &cdrom_sysctl_settings.autoclose,
3466 .maxlen = sizeof(int),
3468 .proc_handler = &cdrom_sysctl_handler,
3471 .procname = "autoeject",
3472 .data = &cdrom_sysctl_settings.autoeject,
3473 .maxlen = sizeof(int),
3475 .proc_handler = &cdrom_sysctl_handler,
3478 .procname = "debug",
3479 .data = &cdrom_sysctl_settings.debug,
3480 .maxlen = sizeof(int),
3482 .proc_handler = &cdrom_sysctl_handler,
3486 .data = &cdrom_sysctl_settings.lock,
3487 .maxlen = sizeof(int),
3489 .proc_handler = &cdrom_sysctl_handler,
3492 .procname = "check_media",
3493 .data = &cdrom_sysctl_settings.check,
3494 .maxlen = sizeof(int),
3496 .proc_handler = &cdrom_sysctl_handler
3501 static ctl_table cdrom_cdrom_table[] = {
3503 .ctl_name = DEV_CDROM,
3504 .procname = "cdrom",
3507 .child = cdrom_table,
3512 /* Make sure that /proc/sys/dev is there */
3513 static ctl_table cdrom_root_table[] = {
3515 .ctl_name = CTL_DEV,
3519 .child = cdrom_cdrom_table,
3523 static struct ctl_table_header *cdrom_sysctl_header;
3525 static void cdrom_sysctl_register(void)
3527 static int initialized;
3529 if (initialized == 1)
3532 cdrom_sysctl_header = register_sysctl_table(cdrom_root_table);
3534 /* set the defaults */
3535 cdrom_sysctl_settings.autoclose = autoclose;
3536 cdrom_sysctl_settings.autoeject = autoeject;
3537 cdrom_sysctl_settings.debug = debug;
3538 cdrom_sysctl_settings.lock = lockdoor;
3539 cdrom_sysctl_settings.check = check_media_type;
3544 static void cdrom_sysctl_unregister(void)
3546 if (cdrom_sysctl_header)
3547 unregister_sysctl_table(cdrom_sysctl_header);
3550 #else /* CONFIG_SYSCTL */
3552 static void cdrom_sysctl_register(void)
3556 static void cdrom_sysctl_unregister(void)
3560 #endif /* CONFIG_SYSCTL */
3562 static int __init cdrom_init(void)
3564 cdrom_sysctl_register();
3569 static void __exit cdrom_exit(void)
3571 printk(KERN_INFO "Uniform CD-ROM driver unloaded\n");
3572 cdrom_sysctl_unregister();
3575 module_init(cdrom_init);
3576 module_exit(cdrom_exit);
3577 MODULE_LICENSE("GPL");
projects / linux-2.6 / blob