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 rq->cmd[0] = GPCMD_READ_CD;
2110 rq->cmd[1] = 1 << 2;
2111 rq->cmd[2] = (lba >> 24) & 0xff;
2112 rq->cmd[3] = (lba >> 16) & 0xff;
2113 rq->cmd[4] = (lba >> 8) & 0xff;
2114 rq->cmd[5] = lba & 0xff;
2115 rq->cmd[6] = (nr >> 16) & 0xff;
2116 rq->cmd[7] = (nr >> 8) & 0xff;
2117 rq->cmd[8] = nr & 0xff;
2121 rq->cmd_type = REQ_TYPE_BLOCK_PC;
2122 rq->timeout = 60 * HZ;
2125 if (blk_execute_rq(q, cdi->disk, rq, 0)) {
2126 struct request_sense *s = rq->sense;
2128 cdi->last_sense = s->sense_key;
2131 if (blk_rq_unmap_user(bio))
2142 blk_put_request(rq);
2146 static int cdrom_read_cdda(struct cdrom_device_info *cdi, __u8 __user *ubuf,
2147 int lba, int nframes)
2151 if (cdi->cdda_method == CDDA_OLD)
2152 return cdrom_read_cdda_old(cdi, ubuf, lba, nframes);
2156 * for anything else than success and io error, we need to retry
2158 ret = cdrom_read_cdda_bpc(cdi, ubuf, lba, nframes);
2159 if (!ret || ret != -EIO)
2163 * I've seen drives get sense 4/8/3 udma crc errors on multi
2164 * frame dma, so drop to single frame dma if we need to
2166 if (cdi->cdda_method == CDDA_BPC_FULL && nframes > 1) {
2167 printk("cdrom: dropping to single frame dma\n");
2168 cdi->cdda_method = CDDA_BPC_SINGLE;
2173 * so we have an io error of some sort with multi frame dma. if the
2174 * condition wasn't a hardware error
2175 * problems, not for any error
2177 if (cdi->last_sense != 0x04 && cdi->last_sense != 0x0b)
2180 printk("cdrom: dropping to old style cdda (sense=%x)\n", cdi->last_sense);
2181 cdi->cdda_method = CDDA_OLD;
2182 return cdrom_read_cdda_old(cdi, ubuf, lba, nframes);
2185 static int cdrom_ioctl_multisession(struct cdrom_device_info *cdi,
2188 struct cdrom_multisession ms_info;
2189 u8 requested_format;
2192 cdinfo(CD_DO_IOCTL, "entering CDROMMULTISESSION\n");
2194 if (!(cdi->ops->capability & CDC_MULTI_SESSION))
2197 if (copy_from_user(&ms_info, argp, sizeof(ms_info)))
2200 requested_format = ms_info.addr_format;
2201 if (requested_format != CDROM_MSF && requested_format != CDROM_LBA)
2203 ms_info.addr_format = CDROM_LBA;
2205 ret = cdi->ops->get_last_session(cdi, &ms_info);
2209 sanitize_format(&ms_info.addr, &ms_info.addr_format, requested_format);
2211 if (copy_to_user(argp, &ms_info, sizeof(ms_info)))
2214 cdinfo(CD_DO_IOCTL, "CDROMMULTISESSION successful\n");
2218 static int cdrom_ioctl_eject(struct cdrom_device_info *cdi)
2220 cdinfo(CD_DO_IOCTL, "entering CDROMEJECT\n");
2222 if (!CDROM_CAN(CDC_OPEN_TRAY))
2224 if (cdi->use_count != 1 || keeplocked)
2226 if (CDROM_CAN(CDC_LOCK)) {
2227 int ret = cdi->ops->lock_door(cdi, 0);
2232 return cdi->ops->tray_move(cdi, 1);
2235 static int cdrom_ioctl_closetray(struct cdrom_device_info *cdi)
2237 cdinfo(CD_DO_IOCTL, "entering CDROMCLOSETRAY\n");
2239 if (!CDROM_CAN(CDC_CLOSE_TRAY))
2241 return cdi->ops->tray_move(cdi, 0);
2244 static int cdrom_ioctl_eject_sw(struct cdrom_device_info *cdi,
2247 cdinfo(CD_DO_IOCTL, "entering CDROMEJECT_SW\n");
2249 if (!CDROM_CAN(CDC_OPEN_TRAY))
2254 cdi->options &= ~(CDO_AUTO_CLOSE | CDO_AUTO_EJECT);
2256 cdi->options |= CDO_AUTO_CLOSE | CDO_AUTO_EJECT;
2260 static int cdrom_ioctl_media_changed(struct cdrom_device_info *cdi,
2263 struct cdrom_changer_info *info;
2266 cdinfo(CD_DO_IOCTL, "entering CDROM_MEDIA_CHANGED\n");
2268 if (!CDROM_CAN(CDC_MEDIA_CHANGED))
2271 /* cannot select disc or select current disc */
2272 if (!CDROM_CAN(CDC_SELECT_DISC) || arg == CDSL_CURRENT)
2273 return media_changed(cdi, 1);
2275 if ((unsigned int)arg >= cdi->capacity)
2278 info = kmalloc(sizeof(*info), GFP_KERNEL);
2282 ret = cdrom_read_mech_status(cdi, info);
2284 ret = info->slots[arg].change;
2289 static int cdrom_ioctl_set_options(struct cdrom_device_info *cdi,
2292 cdinfo(CD_DO_IOCTL, "entering CDROM_SET_OPTIONS\n");
2295 * Options need to be in sync with capability.
2296 * Too late for that, so we have to check each one separately.
2299 case CDO_USE_FFLAGS:
2300 case CDO_CHECK_TYPE:
2303 if (!CDROM_CAN(CDC_LOCK))
2307 return cdi->options;
2308 /* default is basically CDO_[AUTO_CLOSE|AUTO_EJECT] */
2310 if (!CDROM_CAN(arg))
2313 cdi->options |= (int) arg;
2314 return cdi->options;
2317 static int cdrom_ioctl_clear_options(struct cdrom_device_info *cdi,
2320 cdinfo(CD_DO_IOCTL, "entering CDROM_CLEAR_OPTIONS\n");
2322 cdi->options &= ~(int) arg;
2323 return cdi->options;
2326 static int cdrom_ioctl_select_speed(struct cdrom_device_info *cdi,
2329 cdinfo(CD_DO_IOCTL, "entering CDROM_SELECT_SPEED\n");
2331 if (!CDROM_CAN(CDC_SELECT_SPEED))
2333 return cdi->ops->select_speed(cdi, arg);
2336 static int cdrom_ioctl_select_disc(struct cdrom_device_info *cdi,
2339 cdinfo(CD_DO_IOCTL, "entering CDROM_SELECT_DISC\n");
2341 if (!CDROM_CAN(CDC_SELECT_DISC))
2344 if (arg != CDSL_CURRENT && arg != CDSL_NONE) {
2345 if ((int)arg >= cdi->capacity)
2350 * ->select_disc is a hook to allow a driver-specific way of
2351 * seleting disc. However, since there is no equivalent hook for
2352 * cdrom_slot_status this may not actually be useful...
2354 if (cdi->ops->select_disc)
2355 return cdi->ops->select_disc(cdi, arg);
2357 cdinfo(CD_CHANGER, "Using generic cdrom_select_disc()\n");
2358 return cdrom_select_disc(cdi, arg);
2361 static int cdrom_ioctl_reset(struct cdrom_device_info *cdi,
2362 struct block_device *bdev)
2364 cdinfo(CD_DO_IOCTL, "entering CDROM_RESET\n");
2366 if (!capable(CAP_SYS_ADMIN))
2368 if (!CDROM_CAN(CDC_RESET))
2370 invalidate_bdev(bdev);
2371 return cdi->ops->reset(cdi);
2374 static int cdrom_ioctl_lock_door(struct cdrom_device_info *cdi,
2377 cdinfo(CD_DO_IOCTL, "%socking door.\n", arg ? "L" : "Unl");
2379 if (!CDROM_CAN(CDC_LOCK))
2380 return -EDRIVE_CANT_DO_THIS;
2382 keeplocked = arg ? 1 : 0;
2385 * Don't unlock the door on multiple opens by default, but allow
2388 if (cdi->use_count != 1 && !arg && !capable(CAP_SYS_ADMIN))
2390 return cdi->ops->lock_door(cdi, arg);
2393 static int cdrom_ioctl_debug(struct cdrom_device_info *cdi,
2396 cdinfo(CD_DO_IOCTL, "%sabling debug.\n", arg ? "En" : "Dis");
2398 if (!capable(CAP_SYS_ADMIN))
2400 debug = arg ? 1 : 0;
2404 static int cdrom_ioctl_get_capability(struct cdrom_device_info *cdi)
2406 cdinfo(CD_DO_IOCTL, "entering CDROM_GET_CAPABILITY\n");
2407 return (cdi->ops->capability & ~cdi->mask);
2411 * The following function is implemented, although very few audio
2412 * discs give Universal Product Code information, which should just be
2413 * the Medium Catalog Number on the box. Note, that the way the code
2414 * is written on the CD is /not/ uniform across all discs!
2416 static int cdrom_ioctl_get_mcn(struct cdrom_device_info *cdi,
2419 struct cdrom_mcn mcn;
2422 cdinfo(CD_DO_IOCTL, "entering CDROM_GET_MCN\n");
2424 if (!(cdi->ops->capability & CDC_MCN))
2426 ret = cdi->ops->get_mcn(cdi, &mcn);
2430 if (copy_to_user(argp, &mcn, sizeof(mcn)))
2432 cdinfo(CD_DO_IOCTL, "CDROM_GET_MCN successful\n");
2436 static int cdrom_ioctl_drive_status(struct cdrom_device_info *cdi,
2439 cdinfo(CD_DO_IOCTL, "entering CDROM_DRIVE_STATUS\n");
2441 if (!(cdi->ops->capability & CDC_DRIVE_STATUS))
2443 if (!CDROM_CAN(CDC_SELECT_DISC) ||
2444 (arg == CDSL_CURRENT || arg == CDSL_NONE))
2445 return cdi->ops->drive_status(cdi, CDSL_CURRENT);
2446 if (((int)arg >= cdi->capacity))
2448 return cdrom_slot_status(cdi, arg);
2452 * Ok, this is where problems start. The current interface for the
2453 * CDROM_DISC_STATUS ioctl is flawed. It makes the false assumption that
2454 * CDs are all CDS_DATA_1 or all CDS_AUDIO, etc. Unfortunatly, while this
2455 * is often the case, it is also very common for CDs to have some tracks
2456 * with data, and some tracks with audio. Just because I feel like it,
2457 * I declare the following to be the best way to cope. If the CD has ANY
2458 * data tracks on it, it will be returned as a data CD. If it has any XA
2459 * tracks, I will return it as that. Now I could simplify this interface
2460 * by combining these returns with the above, but this more clearly
2461 * demonstrates the problem with the current interface. Too bad this
2462 * wasn't designed to use bitmasks... -Erik
2464 * Well, now we have the option CDS_MIXED: a mixed-type CD.
2465 * User level programmers might feel the ioctl is not very useful.
2468 static int cdrom_ioctl_disc_status(struct cdrom_device_info *cdi)
2472 cdinfo(CD_DO_IOCTL, "entering CDROM_DISC_STATUS\n");
2474 cdrom_count_tracks(cdi, &tracks);
2476 return tracks.error;
2478 /* Policy mode on */
2479 if (tracks.audio > 0) {
2480 if (!tracks.data && !tracks.cdi && !tracks.xa)
2490 if (tracks.data > 0)
2492 /* Policy mode off */
2494 cdinfo(CD_WARNING,"This disc doesn't have any tracks I recognize!\n");
2498 static int cdrom_ioctl_changer_nslots(struct cdrom_device_info *cdi)
2500 cdinfo(CD_DO_IOCTL, "entering CDROM_CHANGER_NSLOTS\n");
2501 return cdi->capacity;
2504 static int cdrom_ioctl_get_subchnl(struct cdrom_device_info *cdi,
2507 struct cdrom_subchnl q;
2511 /* cdinfo(CD_DO_IOCTL,"entering CDROMSUBCHNL\n");*/
2513 if (!CDROM_CAN(CDC_PLAY_AUDIO))
2515 if (copy_from_user(&q, argp, sizeof(q)))
2518 requested = q.cdsc_format;
2519 if (requested != CDROM_MSF && requested != CDROM_LBA)
2521 q.cdsc_format = CDROM_MSF;
2523 ret = cdi->ops->audio_ioctl(cdi, CDROMSUBCHNL, &q);
2527 back = q.cdsc_format; /* local copy */
2528 sanitize_format(&q.cdsc_absaddr, &back, requested);
2529 sanitize_format(&q.cdsc_reladdr, &q.cdsc_format, requested);
2531 if (copy_to_user(argp, &q, sizeof(q)))
2533 /* cdinfo(CD_DO_IOCTL, "CDROMSUBCHNL successful\n"); */
2537 static int cdrom_ioctl_read_tochdr(struct cdrom_device_info *cdi,
2540 struct cdrom_tochdr header;
2543 /* cdinfo(CD_DO_IOCTL, "entering CDROMREADTOCHDR\n"); */
2545 if (!CDROM_CAN(CDC_PLAY_AUDIO))
2547 if (copy_from_user(&header, argp, sizeof(header)))
2550 ret = cdi->ops->audio_ioctl(cdi, CDROMREADTOCHDR, &header);
2554 if (copy_to_user(argp, &header, sizeof(header)))
2556 /* cdinfo(CD_DO_IOCTL, "CDROMREADTOCHDR successful\n"); */
2560 static int cdrom_ioctl_read_tocentry(struct cdrom_device_info *cdi,
2563 struct cdrom_tocentry entry;
2564 u8 requested_format;
2567 /* cdinfo(CD_DO_IOCTL, "entering CDROMREADTOCENTRY\n"); */
2569 if (!CDROM_CAN(CDC_PLAY_AUDIO))
2571 if (copy_from_user(&entry, argp, sizeof(entry)))
2574 requested_format = entry.cdte_format;
2575 if (requested_format != CDROM_MSF && requested_format != CDROM_LBA)
2577 /* make interface to low-level uniform */
2578 entry.cdte_format = CDROM_MSF;
2579 ret = cdi->ops->audio_ioctl(cdi, CDROMREADTOCENTRY, &entry);
2582 sanitize_format(&entry.cdte_addr, &entry.cdte_format, requested_format);
2584 if (copy_to_user(argp, &entry, sizeof(entry)))
2586 /* cdinfo(CD_DO_IOCTL, "CDROMREADTOCENTRY successful\n"); */
2590 static int cdrom_ioctl_play_msf(struct cdrom_device_info *cdi,
2593 struct cdrom_msf msf;
2595 cdinfo(CD_DO_IOCTL, "entering CDROMPLAYMSF\n");
2597 if (!CDROM_CAN(CDC_PLAY_AUDIO))
2599 if (copy_from_user(&msf, argp, sizeof(msf)))
2601 return cdi->ops->audio_ioctl(cdi, CDROMPLAYMSF, &msf);
2604 static int cdrom_ioctl_play_trkind(struct cdrom_device_info *cdi,
2610 cdinfo(CD_DO_IOCTL, "entering CDROMPLAYTRKIND\n");
2612 if (!CDROM_CAN(CDC_PLAY_AUDIO))
2614 if (copy_from_user(&ti, argp, sizeof(ti)))
2617 ret = check_for_audio_disc(cdi, cdi->ops);
2620 return cdi->ops->audio_ioctl(cdi, CDROMPLAYTRKIND, &ti);
2622 static int cdrom_ioctl_volctrl(struct cdrom_device_info *cdi,
2625 struct cdrom_volctrl volume;
2627 cdinfo(CD_DO_IOCTL, "entering CDROMVOLCTRL\n");
2629 if (!CDROM_CAN(CDC_PLAY_AUDIO))
2631 if (copy_from_user(&volume, argp, sizeof(volume)))
2633 return cdi->ops->audio_ioctl(cdi, CDROMVOLCTRL, &volume);
2636 static int cdrom_ioctl_volread(struct cdrom_device_info *cdi,
2639 struct cdrom_volctrl volume;
2642 cdinfo(CD_DO_IOCTL, "entering CDROMVOLREAD\n");
2644 if (!CDROM_CAN(CDC_PLAY_AUDIO))
2647 ret = cdi->ops->audio_ioctl(cdi, CDROMVOLREAD, &volume);
2651 if (copy_to_user(argp, &volume, sizeof(volume)))
2656 static int cdrom_ioctl_audioctl(struct cdrom_device_info *cdi,
2661 cdinfo(CD_DO_IOCTL, "doing audio ioctl (start/stop/pause/resume)\n");
2663 if (!CDROM_CAN(CDC_PLAY_AUDIO))
2665 ret = check_for_audio_disc(cdi, cdi->ops);
2668 return cdi->ops->audio_ioctl(cdi, cmd, NULL);
2672 * Just about every imaginable ioctl is supported in the Uniform layer
2674 * ATAPI / SCSI specific code now mainly resides in mmc_ioctl().
2676 int cdrom_ioctl(struct file * file, struct cdrom_device_info *cdi,
2677 struct inode *ip, unsigned int cmd, unsigned long arg)
2679 void __user *argp = (void __user *)arg;
2681 struct gendisk *disk = ip->i_bdev->bd_disk;
2684 * Try the generic SCSI command ioctl's first.
2686 ret = scsi_cmd_ioctl(file, disk->queue, disk, cmd, argp);
2691 case CDROMMULTISESSION:
2692 return cdrom_ioctl_multisession(cdi, argp);
2694 return cdrom_ioctl_eject(cdi);
2695 case CDROMCLOSETRAY:
2696 return cdrom_ioctl_closetray(cdi);
2698 return cdrom_ioctl_eject_sw(cdi, arg);
2699 case CDROM_MEDIA_CHANGED:
2700 return cdrom_ioctl_media_changed(cdi, arg);
2701 case CDROM_SET_OPTIONS:
2702 return cdrom_ioctl_set_options(cdi, arg);
2703 case CDROM_CLEAR_OPTIONS:
2704 return cdrom_ioctl_clear_options(cdi, arg);
2705 case CDROM_SELECT_SPEED:
2706 return cdrom_ioctl_select_speed(cdi, arg);
2707 case CDROM_SELECT_DISC:
2708 return cdrom_ioctl_select_disc(cdi, arg);
2710 return cdrom_ioctl_reset(cdi, ip->i_bdev);
2711 case CDROM_LOCKDOOR:
2712 return cdrom_ioctl_lock_door(cdi, arg);
2714 return cdrom_ioctl_debug(cdi, arg);
2715 case CDROM_GET_CAPABILITY:
2716 return cdrom_ioctl_get_capability(cdi);
2718 return cdrom_ioctl_get_mcn(cdi, argp);
2719 case CDROM_DRIVE_STATUS:
2720 return cdrom_ioctl_drive_status(cdi, arg);
2721 case CDROM_DISC_STATUS:
2722 return cdrom_ioctl_disc_status(cdi);
2723 case CDROM_CHANGER_NSLOTS:
2724 return cdrom_ioctl_changer_nslots(cdi);
2728 * Use the ioctls that are implemented through the generic_packet()
2729 * interface. this may look at bit funny, but if -ENOTTY is
2730 * returned that particular ioctl is not implemented and we
2731 * let it go through the device specific ones.
2733 if (CDROM_CAN(CDC_GENERIC_PACKET)) {
2734 ret = mmc_ioctl(cdi, cmd, arg);
2740 * Note: most of the cdinfo() calls are commented out here,
2741 * because they fill up the sys log when CD players poll
2746 return cdrom_ioctl_get_subchnl(cdi, argp);
2747 case CDROMREADTOCHDR:
2748 return cdrom_ioctl_read_tochdr(cdi, argp);
2749 case CDROMREADTOCENTRY:
2750 return cdrom_ioctl_read_tocentry(cdi, argp);
2752 return cdrom_ioctl_play_msf(cdi, argp);
2753 case CDROMPLAYTRKIND:
2754 return cdrom_ioctl_play_trkind(cdi, argp);
2756 return cdrom_ioctl_volctrl(cdi, argp);
2758 return cdrom_ioctl_volread(cdi, argp);
2763 return cdrom_ioctl_audioctl(cdi, cmd);
2770 * Required when we need to use READ_10 to issue other than 2048 block
2773 static int cdrom_switch_blocksize(struct cdrom_device_info *cdi, int size)
2775 struct cdrom_device_ops *cdo = cdi->ops;
2776 struct packet_command cgc;
2777 struct modesel_head mh;
2779 memset(&mh, 0, sizeof(mh));
2780 mh.block_desc_length = 0x08;
2781 mh.block_length_med = (size >> 8) & 0xff;
2782 mh.block_length_lo = size & 0xff;
2784 memset(&cgc, 0, sizeof(cgc));
2786 cgc.cmd[1] = 1 << 4;
2788 cgc.buflen = sizeof(mh);
2789 cgc.buffer = (char *) &mh;
2790 cgc.data_direction = CGC_DATA_WRITE;
2791 mh.block_desc_length = 0x08;
2792 mh.block_length_med = (size >> 8) & 0xff;
2793 mh.block_length_lo = size & 0xff;
2795 return cdo->generic_packet(cdi, &cgc);
2798 static int mmc_ioctl(struct cdrom_device_info *cdi, unsigned int cmd,
2801 struct cdrom_device_ops *cdo = cdi->ops;
2802 struct packet_command cgc;
2803 struct request_sense sense;
2804 unsigned char buffer[32];
2807 memset(&cgc, 0, sizeof(cgc));
2809 /* build a unified command and queue it through
2810 cdo->generic_packet() */
2813 case CDROMREADMODE1:
2814 case CDROMREADMODE2: {
2815 struct cdrom_msf msf;
2816 int blocksize = 0, format = 0, lba;
2820 blocksize = CD_FRAMESIZE_RAW;
2822 case CDROMREADMODE1:
2823 blocksize = CD_FRAMESIZE;
2826 case CDROMREADMODE2:
2827 blocksize = CD_FRAMESIZE_RAW0;
2830 IOCTL_IN(arg, struct cdrom_msf, msf);
2831 lba = msf_to_lba(msf.cdmsf_min0,msf.cdmsf_sec0,msf.cdmsf_frame0);
2832 /* FIXME: we need upper bound checking, too!! */
2835 cgc.buffer = kmalloc(blocksize, GFP_KERNEL);
2836 if (cgc.buffer == NULL)
2838 memset(&sense, 0, sizeof(sense));
2840 cgc.data_direction = CGC_DATA_READ;
2841 ret = cdrom_read_block(cdi, &cgc, lba, 1, format, blocksize);
2842 if (ret && sense.sense_key==0x05 && sense.asc==0x20 && sense.ascq==0x00) {
2844 * SCSI-II devices are not required to support
2845 * READ_CD, so let's try switching block size
2847 /* FIXME: switch back again... */
2848 if ((ret = cdrom_switch_blocksize(cdi, blocksize))) {
2853 ret = cdrom_read_cd(cdi, &cgc, lba, blocksize, 1);
2854 ret |= cdrom_switch_blocksize(cdi, blocksize);
2856 if (!ret && copy_to_user((char __user *)arg, cgc.buffer, blocksize))
2861 case CDROMREADAUDIO: {
2862 struct cdrom_read_audio ra;
2865 IOCTL_IN(arg, struct cdrom_read_audio, ra);
2867 if (ra.addr_format == CDROM_MSF)
2868 lba = msf_to_lba(ra.addr.msf.minute,
2871 else if (ra.addr_format == CDROM_LBA)
2876 /* FIXME: we need upper bound checking, too!! */
2877 if (lba < 0 || ra.nframes <= 0 || ra.nframes > CD_FRAMES)
2880 return cdrom_read_cdda(cdi, ra.buf, lba, ra.nframes);
2882 case CDROMSUBCHNL: {
2883 struct cdrom_subchnl q;
2884 u_char requested, back;
2885 IOCTL_IN(arg, struct cdrom_subchnl, q);
2886 requested = q.cdsc_format;
2887 if (!((requested == CDROM_MSF) ||
2888 (requested == CDROM_LBA)))
2890 q.cdsc_format = CDROM_MSF;
2891 if ((ret = cdrom_read_subchannel(cdi, &q, 0)))
2893 back = q.cdsc_format; /* local copy */
2894 sanitize_format(&q.cdsc_absaddr, &back, requested);
2895 sanitize_format(&q.cdsc_reladdr, &q.cdsc_format, requested);
2896 IOCTL_OUT(arg, struct cdrom_subchnl, q);
2897 /* cdinfo(CD_DO_IOCTL, "CDROMSUBCHNL successful\n"); */
2900 case CDROMPLAYMSF: {
2901 struct cdrom_msf msf;
2902 cdinfo(CD_DO_IOCTL, "entering CDROMPLAYMSF\n");
2903 IOCTL_IN(arg, struct cdrom_msf, msf);
2904 cgc.cmd[0] = GPCMD_PLAY_AUDIO_MSF;
2905 cgc.cmd[3] = msf.cdmsf_min0;
2906 cgc.cmd[4] = msf.cdmsf_sec0;
2907 cgc.cmd[5] = msf.cdmsf_frame0;
2908 cgc.cmd[6] = msf.cdmsf_min1;
2909 cgc.cmd[7] = msf.cdmsf_sec1;
2910 cgc.cmd[8] = msf.cdmsf_frame1;
2911 cgc.data_direction = CGC_DATA_NONE;
2912 return cdo->generic_packet(cdi, &cgc);
2914 case CDROMPLAYBLK: {
2915 struct cdrom_blk blk;
2916 cdinfo(CD_DO_IOCTL, "entering CDROMPLAYBLK\n");
2917 IOCTL_IN(arg, struct cdrom_blk, blk);
2918 cgc.cmd[0] = GPCMD_PLAY_AUDIO_10;
2919 cgc.cmd[2] = (blk.from >> 24) & 0xff;
2920 cgc.cmd[3] = (blk.from >> 16) & 0xff;
2921 cgc.cmd[4] = (blk.from >> 8) & 0xff;
2922 cgc.cmd[5] = blk.from & 0xff;
2923 cgc.cmd[7] = (blk.len >> 8) & 0xff;
2924 cgc.cmd[8] = blk.len & 0xff;
2925 cgc.data_direction = CGC_DATA_NONE;
2926 return cdo->generic_packet(cdi, &cgc);
2929 case CDROMVOLREAD: {
2930 struct cdrom_volctrl volctrl;
2931 char mask[sizeof(buffer)];
2932 unsigned short offset;
2934 cdinfo(CD_DO_IOCTL, "entering CDROMVOLUME\n");
2936 IOCTL_IN(arg, struct cdrom_volctrl, volctrl);
2938 cgc.buffer = buffer;
2940 if ((ret = cdrom_mode_sense(cdi, &cgc, GPMODE_AUDIO_CTL_PAGE, 0)))
2943 /* originally the code depended on buffer[1] to determine
2944 how much data is available for transfer. buffer[1] is
2945 unfortunately ambigious and the only reliable way seem
2946 to be to simply skip over the block descriptor... */
2947 offset = 8 + be16_to_cpu(*(__be16 *)(buffer+6));
2949 if (offset + 16 > sizeof(buffer))
2952 if (offset + 16 > cgc.buflen) {
2953 cgc.buflen = offset+16;
2954 ret = cdrom_mode_sense(cdi, &cgc,
2955 GPMODE_AUDIO_CTL_PAGE, 0);
2961 if ((buffer[offset] & 0x3f) != GPMODE_AUDIO_CTL_PAGE ||
2962 buffer[offset+1] < 14)
2965 /* now we have the current volume settings. if it was only
2966 a CDROMVOLREAD, return these values */
2967 if (cmd == CDROMVOLREAD) {
2968 volctrl.channel0 = buffer[offset+9];
2969 volctrl.channel1 = buffer[offset+11];
2970 volctrl.channel2 = buffer[offset+13];
2971 volctrl.channel3 = buffer[offset+15];
2972 IOCTL_OUT(arg, struct cdrom_volctrl, volctrl);
2976 /* get the volume mask */
2978 if ((ret = cdrom_mode_sense(cdi, &cgc,
2979 GPMODE_AUDIO_CTL_PAGE, 1)))
2982 buffer[offset+9] = volctrl.channel0 & mask[offset+9];
2983 buffer[offset+11] = volctrl.channel1 & mask[offset+11];
2984 buffer[offset+13] = volctrl.channel2 & mask[offset+13];
2985 buffer[offset+15] = volctrl.channel3 & mask[offset+15];
2988 cgc.buffer = buffer + offset - 8;
2989 memset(cgc.buffer, 0, 8);
2990 return cdrom_mode_select(cdi, &cgc);
2995 cdinfo(CD_DO_IOCTL, "entering CDROMSTART/CDROMSTOP\n");
2996 cgc.cmd[0] = GPCMD_START_STOP_UNIT;
2998 cgc.cmd[4] = (cmd == CDROMSTART) ? 1 : 0;
2999 cgc.data_direction = CGC_DATA_NONE;
3000 return cdo->generic_packet(cdi, &cgc);
3005 cdinfo(CD_DO_IOCTL, "entering CDROMPAUSE/CDROMRESUME\n");
3006 cgc.cmd[0] = GPCMD_PAUSE_RESUME;
3007 cgc.cmd[8] = (cmd == CDROMRESUME) ? 1 : 0;
3008 cgc.data_direction = CGC_DATA_NONE;
3009 return cdo->generic_packet(cdi, &cgc);
3012 case DVD_READ_STRUCT: {
3014 int size = sizeof(dvd_struct);
3015 if (!CDROM_CAN(CDC_DVD))
3017 if ((s = kmalloc(size, GFP_KERNEL)) == NULL)
3019 cdinfo(CD_DO_IOCTL, "entering DVD_READ_STRUCT\n");
3020 if (copy_from_user(s, (dvd_struct __user *)arg, size)) {
3024 if ((ret = dvd_read_struct(cdi, s))) {
3028 if (copy_to_user((dvd_struct __user *)arg, s, size))
3036 if (!CDROM_CAN(CDC_DVD))
3038 cdinfo(CD_DO_IOCTL, "entering DVD_AUTH\n");
3039 IOCTL_IN(arg, dvd_authinfo, ai);
3040 if ((ret = dvd_do_auth (cdi, &ai)))
3042 IOCTL_OUT(arg, dvd_authinfo, ai);
3046 case CDROM_NEXT_WRITABLE: {
3048 cdinfo(CD_DO_IOCTL, "entering CDROM_NEXT_WRITABLE\n");
3049 if ((ret = cdrom_get_next_writable(cdi, &next)))
3051 IOCTL_OUT(arg, long, next);
3054 case CDROM_LAST_WRITTEN: {
3056 cdinfo(CD_DO_IOCTL, "entering CDROM_LAST_WRITTEN\n");
3057 if ((ret = cdrom_get_last_written(cdi, &last)))
3059 IOCTL_OUT(arg, long, last);
3067 static int cdrom_get_track_info(struct cdrom_device_info *cdi, __u16 track, __u8 type,
3068 track_information *ti)
3070 struct cdrom_device_ops *cdo = cdi->ops;
3071 struct packet_command cgc;
3074 init_cdrom_command(&cgc, ti, 8, CGC_DATA_READ);
3075 cgc.cmd[0] = GPCMD_READ_TRACK_RZONE_INFO;
3076 cgc.cmd[1] = type & 3;
3077 cgc.cmd[4] = (track & 0xff00) >> 8;
3078 cgc.cmd[5] = track & 0xff;
3082 if ((ret = cdo->generic_packet(cdi, &cgc)))
3085 buflen = be16_to_cpu(ti->track_information_length) +
3086 sizeof(ti->track_information_length);
3088 if (buflen > sizeof(track_information))
3089 buflen = sizeof(track_information);
3091 cgc.cmd[8] = cgc.buflen = buflen;
3092 if ((ret = cdo->generic_packet(cdi, &cgc)))
3095 /* return actual fill size */
3099 /* requires CD R/RW */
3100 static int cdrom_get_disc_info(struct cdrom_device_info *cdi, disc_information *di)
3102 struct cdrom_device_ops *cdo = cdi->ops;
3103 struct packet_command cgc;
3106 /* set up command and get the disc info */
3107 init_cdrom_command(&cgc, di, sizeof(*di), CGC_DATA_READ);
3108 cgc.cmd[0] = GPCMD_READ_DISC_INFO;
3109 cgc.cmd[8] = cgc.buflen = 2;
3112 if ((ret = cdo->generic_packet(cdi, &cgc)))
3115 /* not all drives have the same disc_info length, so requeue
3116 * packet with the length the drive tells us it can supply
3118 buflen = be16_to_cpu(di->disc_information_length) +
3119 sizeof(di->disc_information_length);
3121 if (buflen > sizeof(disc_information))
3122 buflen = sizeof(disc_information);
3124 cgc.cmd[8] = cgc.buflen = buflen;
3125 if ((ret = cdo->generic_packet(cdi, &cgc)))
3128 /* return actual fill size */
3132 /* return the last written block on the CD-R media. this is for the udf
3134 int cdrom_get_last_written(struct cdrom_device_info *cdi, long *last_written)
3136 struct cdrom_tocentry toc;
3137 disc_information di;
3138 track_information ti;
3140 int ret = -1, ti_size;
3142 if (!CDROM_CAN(CDC_GENERIC_PACKET))
3145 ret = cdrom_get_disc_info(cdi, &di);
3146 if (ret < (int)(offsetof(typeof(di), last_track_lsb)
3147 + sizeof(di.last_track_lsb)))
3150 /* if unit didn't return msb, it's zeroed by cdrom_get_disc_info */
3151 last_track = (di.last_track_msb << 8) | di.last_track_lsb;
3152 ti_size = cdrom_get_track_info(cdi, last_track, 1, &ti);
3153 if (ti_size < (int)offsetof(typeof(ti), track_start))
3156 /* if this track is blank, try the previous. */
3161 ti_size = cdrom_get_track_info(cdi, last_track, 1, &ti);
3164 if (ti_size < (int)(offsetof(typeof(ti), track_size)
3165 + sizeof(ti.track_size)))
3168 /* if last recorded field is valid, return it. */
3169 if (ti.lra_v && ti_size >= (int)(offsetof(typeof(ti), last_rec_address)
3170 + sizeof(ti.last_rec_address))) {
3171 *last_written = be32_to_cpu(ti.last_rec_address);
3173 /* make it up instead */
3174 *last_written = be32_to_cpu(ti.track_start) +
3175 be32_to_cpu(ti.track_size);
3177 *last_written -= (be32_to_cpu(ti.free_blocks) + 7);
3181 /* this is where we end up if the drive either can't do a
3182 GPCMD_READ_DISC_INFO or GPCMD_READ_TRACK_RZONE_INFO or if
3183 it doesn't give enough information or fails. then we return
3184 the toc contents. */
3186 toc.cdte_format = CDROM_MSF;
3187 toc.cdte_track = CDROM_LEADOUT;
3188 if ((ret = cdi->ops->audio_ioctl(cdi, CDROMREADTOCENTRY, &toc)))
3190 sanitize_format(&toc.cdte_addr, &toc.cdte_format, CDROM_LBA);
3191 *last_written = toc.cdte_addr.lba;
3195 /* return the next writable block. also for udf file system. */
3196 static int cdrom_get_next_writable(struct cdrom_device_info *cdi, long *next_writable)
3198 disc_information di;
3199 track_information ti;
3203 if (!CDROM_CAN(CDC_GENERIC_PACKET))
3204 goto use_last_written;
3206 ret = cdrom_get_disc_info(cdi, &di);
3207 if (ret < 0 || ret < offsetof(typeof(di), last_track_lsb)
3208 + sizeof(di.last_track_lsb))
3209 goto use_last_written;
3211 /* if unit didn't return msb, it's zeroed by cdrom_get_disc_info */
3212 last_track = (di.last_track_msb << 8) | di.last_track_lsb;
3213 ti_size = cdrom_get_track_info(cdi, last_track, 1, &ti);
3214 if (ti_size < 0 || ti_size < offsetof(typeof(ti), track_start))
3215 goto use_last_written;
3217 /* if this track is blank, try the previous. */
3219 if (last_track == 1)
3220 goto use_last_written;
3222 ti_size = cdrom_get_track_info(cdi, last_track, 1, &ti);
3224 goto use_last_written;
3227 /* if next recordable address field is valid, use it. */
3228 if (ti.nwa_v && ti_size >= offsetof(typeof(ti), next_writable)
3229 + sizeof(ti.next_writable)) {
3230 *next_writable = be32_to_cpu(ti.next_writable);
3235 if ((ret = cdrom_get_last_written(cdi, next_writable))) {
3239 *next_writable += 7;
3244 EXPORT_SYMBOL(cdrom_get_last_written);
3245 EXPORT_SYMBOL(register_cdrom);
3246 EXPORT_SYMBOL(unregister_cdrom);
3247 EXPORT_SYMBOL(cdrom_open);
3248 EXPORT_SYMBOL(cdrom_release);
3249 EXPORT_SYMBOL(cdrom_ioctl);
3250 EXPORT_SYMBOL(cdrom_media_changed);
3251 EXPORT_SYMBOL(cdrom_number_of_slots);
3252 EXPORT_SYMBOL(cdrom_mode_select);
3253 EXPORT_SYMBOL(cdrom_mode_sense);
3254 EXPORT_SYMBOL(init_cdrom_command);
3255 EXPORT_SYMBOL(cdrom_get_media_event);
3257 #ifdef CONFIG_SYSCTL
3259 #define CDROM_STR_SIZE 1000
3261 static struct cdrom_sysctl_settings {
3262 char info[CDROM_STR_SIZE]; /* general info */
3263 int autoclose; /* close tray upon mount, etc */
3264 int autoeject; /* eject on umount */
3265 int debug; /* turn on debugging messages */
3266 int lock; /* lock the door on device open */
3267 int check; /* check media type */
3268 } cdrom_sysctl_settings;
3270 enum cdrom_print_option {
3277 static int cdrom_print_info(const char *header, int val, char *info,
3278 int *pos, enum cdrom_print_option option)
3280 const int max_size = sizeof(cdrom_sysctl_settings.info);
3281 struct cdrom_device_info *cdi;
3284 ret = scnprintf(info + *pos, max_size - *pos, header);
3290 list_for_each_entry(cdi, &cdrom_list, list) {
3293 ret = scnprintf(info + *pos, max_size - *pos,
3297 ret = scnprintf(info + *pos, max_size - *pos,
3298 "\t%d", cdi->speed);
3301 ret = scnprintf(info + *pos, max_size - *pos,
3302 "\t%d", cdi->capacity);
3304 case CTL_CAPABILITY:
3305 ret = scnprintf(info + *pos, max_size - *pos,
3306 "\t%d", CDROM_CAN(val) != 0);
3309 printk(KERN_INFO "cdrom: invalid option%d\n", option);
3320 static int cdrom_sysctl_info(ctl_table *ctl, int write, struct file * filp,
3321 void __user *buffer, size_t *lenp, loff_t *ppos)
3324 char *info = cdrom_sysctl_settings.info;
3325 const int max_size = sizeof(cdrom_sysctl_settings.info);
3327 if (!*lenp || (*ppos && !write)) {
3332 mutex_lock(&cdrom_mutex);
3334 pos = sprintf(info, "CD-ROM information, " VERSION "\n");
3336 if (cdrom_print_info("\ndrive name:\t", 0, info, &pos, CTL_NAME))
3338 if (cdrom_print_info("\ndrive speed:\t", 0, info, &pos, CTL_SPEED))
3340 if (cdrom_print_info("\ndrive # of slots:", 0, info, &pos, CTL_SLOTS))
3342 if (cdrom_print_info("\nCan close tray:\t",
3343 CDC_CLOSE_TRAY, info, &pos, CTL_CAPABILITY))
3345 if (cdrom_print_info("\nCan open tray:\t",
3346 CDC_OPEN_TRAY, info, &pos, CTL_CAPABILITY))
3348 if (cdrom_print_info("\nCan lock tray:\t",
3349 CDC_LOCK, info, &pos, CTL_CAPABILITY))
3351 if (cdrom_print_info("\nCan change speed:",
3352 CDC_SELECT_SPEED, info, &pos, CTL_CAPABILITY))
3354 if (cdrom_print_info("\nCan select disk:",
3355 CDC_SELECT_DISC, info, &pos, CTL_CAPABILITY))
3357 if (cdrom_print_info("\nCan read multisession:",
3358 CDC_MULTI_SESSION, info, &pos, CTL_CAPABILITY))
3360 if (cdrom_print_info("\nCan read MCN:\t",
3361 CDC_MCN, info, &pos, CTL_CAPABILITY))
3363 if (cdrom_print_info("\nReports media changed:",
3364 CDC_MEDIA_CHANGED, info, &pos, CTL_CAPABILITY))
3366 if (cdrom_print_info("\nCan play audio:\t",
3367 CDC_PLAY_AUDIO, info, &pos, CTL_CAPABILITY))
3369 if (cdrom_print_info("\nCan write CD-R:\t",
3370 CDC_CD_R, info, &pos, CTL_CAPABILITY))
3372 if (cdrom_print_info("\nCan write CD-RW:",
3373 CDC_CD_RW, info, &pos, CTL_CAPABILITY))
3375 if (cdrom_print_info("\nCan read DVD:\t",
3376 CDC_DVD, info, &pos, CTL_CAPABILITY))
3378 if (cdrom_print_info("\nCan write DVD-R:",
3379 CDC_DVD_R, info, &pos, CTL_CAPABILITY))
3381 if (cdrom_print_info("\nCan write DVD-RAM:",
3382 CDC_DVD_RAM, info, &pos, CTL_CAPABILITY))
3384 if (cdrom_print_info("\nCan read MRW:\t",
3385 CDC_MRW, info, &pos, CTL_CAPABILITY))
3387 if (cdrom_print_info("\nCan write MRW:\t",
3388 CDC_MRW_W, info, &pos, CTL_CAPABILITY))
3390 if (cdrom_print_info("\nCan write RAM:\t",
3391 CDC_RAM, info, &pos, CTL_CAPABILITY))
3393 if (!scnprintf(info + pos, max_size - pos, "\n\n"))
3396 mutex_unlock(&cdrom_mutex);
3397 return proc_dostring(ctl, write, filp, buffer, lenp, ppos);
3399 printk(KERN_INFO "cdrom: info buffer too small\n");
3403 /* Unfortunately, per device settings are not implemented through
3404 procfs/sysctl yet. When they are, this will naturally disappear. For now
3405 just update all drives. Later this will become the template on which
3406 new registered drives will be based. */
3407 static void cdrom_update_settings(void)
3409 struct cdrom_device_info *cdi;
3411 mutex_lock(&cdrom_mutex);
3412 list_for_each_entry(cdi, &cdrom_list, list) {
3413 if (autoclose && CDROM_CAN(CDC_CLOSE_TRAY))
3414 cdi->options |= CDO_AUTO_CLOSE;
3415 else if (!autoclose)
3416 cdi->options &= ~CDO_AUTO_CLOSE;
3417 if (autoeject && CDROM_CAN(CDC_OPEN_TRAY))
3418 cdi->options |= CDO_AUTO_EJECT;
3419 else if (!autoeject)
3420 cdi->options &= ~CDO_AUTO_EJECT;
3421 if (lockdoor && CDROM_CAN(CDC_LOCK))
3422 cdi->options |= CDO_LOCK;
3424 cdi->options &= ~CDO_LOCK;
3425 if (check_media_type)
3426 cdi->options |= CDO_CHECK_TYPE;
3428 cdi->options &= ~CDO_CHECK_TYPE;
3430 mutex_unlock(&cdrom_mutex);
3433 static int cdrom_sysctl_handler(ctl_table *ctl, int write, struct file * filp,
3434 void __user *buffer, size_t *lenp, loff_t *ppos)
3438 ret = proc_dointvec(ctl, write, filp, buffer, lenp, ppos);
3442 /* we only care for 1 or 0. */
3443 autoclose = !!cdrom_sysctl_settings.autoclose;
3444 autoeject = !!cdrom_sysctl_settings.autoeject;
3445 debug = !!cdrom_sysctl_settings.debug;
3446 lockdoor = !!cdrom_sysctl_settings.lock;
3447 check_media_type = !!cdrom_sysctl_settings.check;
3449 /* update the option flags according to the changes. we
3450 don't have per device options through sysctl yet,
3451 but we will have and then this will disappear. */
3452 cdrom_update_settings();
3458 /* Place files in /proc/sys/dev/cdrom */
3459 static ctl_table cdrom_table[] = {
3462 .data = &cdrom_sysctl_settings.info,
3463 .maxlen = CDROM_STR_SIZE,
3465 .proc_handler = &cdrom_sysctl_info,
3468 .procname = "autoclose",
3469 .data = &cdrom_sysctl_settings.autoclose,
3470 .maxlen = sizeof(int),
3472 .proc_handler = &cdrom_sysctl_handler,
3475 .procname = "autoeject",
3476 .data = &cdrom_sysctl_settings.autoeject,
3477 .maxlen = sizeof(int),
3479 .proc_handler = &cdrom_sysctl_handler,
3482 .procname = "debug",
3483 .data = &cdrom_sysctl_settings.debug,
3484 .maxlen = sizeof(int),
3486 .proc_handler = &cdrom_sysctl_handler,
3490 .data = &cdrom_sysctl_settings.lock,
3491 .maxlen = sizeof(int),
3493 .proc_handler = &cdrom_sysctl_handler,
3496 .procname = "check_media",
3497 .data = &cdrom_sysctl_settings.check,
3498 .maxlen = sizeof(int),
3500 .proc_handler = &cdrom_sysctl_handler
3505 static ctl_table cdrom_cdrom_table[] = {
3507 .ctl_name = DEV_CDROM,
3508 .procname = "cdrom",
3511 .child = cdrom_table,
3516 /* Make sure that /proc/sys/dev is there */
3517 static ctl_table cdrom_root_table[] = {
3519 .ctl_name = CTL_DEV,
3523 .child = cdrom_cdrom_table,
3527 static struct ctl_table_header *cdrom_sysctl_header;
3529 static void cdrom_sysctl_register(void)
3531 static int initialized;
3533 if (initialized == 1)
3536 cdrom_sysctl_header = register_sysctl_table(cdrom_root_table);
3538 /* set the defaults */
3539 cdrom_sysctl_settings.autoclose = autoclose;
3540 cdrom_sysctl_settings.autoeject = autoeject;
3541 cdrom_sysctl_settings.debug = debug;
3542 cdrom_sysctl_settings.lock = lockdoor;
3543 cdrom_sysctl_settings.check = check_media_type;
3548 static void cdrom_sysctl_unregister(void)
3550 if (cdrom_sysctl_header)
3551 unregister_sysctl_table(cdrom_sysctl_header);
3554 #else /* CONFIG_SYSCTL */
3556 static void cdrom_sysctl_register(void)
3560 static void cdrom_sysctl_unregister(void)
3564 #endif /* CONFIG_SYSCTL */
3566 static int __init cdrom_init(void)
3568 cdrom_sysctl_register();
3573 static void __exit cdrom_exit(void)
3575 printk(KERN_INFO "Uniform CD-ROM driver unloaded\n");
3576 cdrom_sysctl_unregister();
3579 module_init(cdrom_init);
3580 module_exit(cdrom_exit);
3581 MODULE_LICENSE("GPL");
projects / linux-2.6 / blob