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(generic_packet, CDC_GENERIC_PACKET);
414 cdi->options = CDO_USE_FFLAGS;
416 if (autoclose==1 && CDROM_CAN(CDC_CLOSE_TRAY))
417 cdi->options |= (int) CDO_AUTO_CLOSE;
418 if (autoeject==1 && CDROM_CAN(CDC_OPEN_TRAY))
419 cdi->options |= (int) CDO_AUTO_EJECT;
421 cdi->options |= (int) CDO_LOCK;
422 if (check_media_type==1)
423 cdi->options |= (int) CDO_CHECK_TYPE;
425 if (CDROM_CAN(CDC_MRW_W))
426 cdi->exit = cdrom_mrw_exit;
429 cdi->cdda_method = CDDA_BPC_FULL;
431 cdi->cdda_method = CDDA_OLD;
433 if (!cdo->generic_packet)
434 cdo->generic_packet = cdrom_dummy_generic_packet;
436 cdinfo(CD_REG_UNREG, "drive \"/dev/%s\" registered\n", cdi->name);
437 mutex_lock(&cdrom_mutex);
438 list_add(&cdi->list, &cdrom_list);
439 mutex_unlock(&cdrom_mutex);
444 void unregister_cdrom(struct cdrom_device_info *cdi)
446 cdinfo(CD_OPEN, "entering unregister_cdrom\n");
448 mutex_lock(&cdrom_mutex);
449 list_del(&cdi->list);
450 mutex_unlock(&cdrom_mutex);
455 cdi->ops->n_minors--;
456 cdinfo(CD_REG_UNREG, "drive \"/dev/%s\" unregistered\n", cdi->name);
459 int cdrom_get_media_event(struct cdrom_device_info *cdi,
460 struct media_event_desc *med)
462 struct packet_command cgc;
463 unsigned char buffer[8];
464 struct event_header *eh = (struct event_header *) buffer;
466 init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_READ);
467 cgc.cmd[0] = GPCMD_GET_EVENT_STATUS_NOTIFICATION;
468 cgc.cmd[1] = 1; /* IMMED */
469 cgc.cmd[4] = 1 << 4; /* media event */
470 cgc.cmd[8] = sizeof(buffer);
473 if (cdi->ops->generic_packet(cdi, &cgc))
476 if (be16_to_cpu(eh->data_len) < sizeof(*med))
479 if (eh->nea || eh->notification_class != 0x4)
482 memcpy(med, &buffer[sizeof(*eh)], sizeof(*med));
487 * the first prototypes used 0x2c as the page code for the mrw mode page,
488 * subsequently this was changed to 0x03. probe the one used by this drive
490 static int cdrom_mrw_probe_pc(struct cdrom_device_info *cdi)
492 struct packet_command cgc;
495 init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_READ);
500 if (!cdrom_mode_sense(cdi, &cgc, MRW_MODE_PC, 0)) {
501 cdi->mrw_mode_page = MRW_MODE_PC;
503 } else if (!cdrom_mode_sense(cdi, &cgc, MRW_MODE_PC_PRE1, 0)) {
504 cdi->mrw_mode_page = MRW_MODE_PC_PRE1;
511 static int cdrom_is_mrw(struct cdrom_device_info *cdi, int *write)
513 struct packet_command cgc;
514 struct mrw_feature_desc *mfd;
515 unsigned char buffer[16];
520 init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_READ);
522 cgc.cmd[0] = GPCMD_GET_CONFIGURATION;
523 cgc.cmd[3] = CDF_MRW;
524 cgc.cmd[8] = sizeof(buffer);
527 if ((ret = cdi->ops->generic_packet(cdi, &cgc)))
530 mfd = (struct mrw_feature_desc *)&buffer[sizeof(struct feature_header)];
531 if (be16_to_cpu(mfd->feature_code) != CDF_MRW)
535 if ((ret = cdrom_mrw_probe_pc(cdi))) {
543 static int cdrom_mrw_bgformat(struct cdrom_device_info *cdi, int cont)
545 struct packet_command cgc;
546 unsigned char buffer[12];
549 printk(KERN_INFO "cdrom: %sstarting format\n", cont ? "Re" : "");
552 * FmtData bit set (bit 4), format type is 1
554 init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_WRITE);
555 cgc.cmd[0] = GPCMD_FORMAT_UNIT;
556 cgc.cmd[1] = (1 << 4) | 1;
558 cgc.timeout = 5 * 60 * HZ;
561 * 4 byte format list header, 8 byte format list descriptor
574 buffer[8] = 0x24 << 2;
577 ret = cdi->ops->generic_packet(cdi, &cgc);
579 printk(KERN_INFO "cdrom: bgformat failed\n");
584 static int cdrom_mrw_bgformat_susp(struct cdrom_device_info *cdi, int immed)
586 struct packet_command cgc;
588 init_cdrom_command(&cgc, NULL, 0, CGC_DATA_NONE);
589 cgc.cmd[0] = GPCMD_CLOSE_TRACK;
592 * Session = 1, Track = 0
594 cgc.cmd[1] = !!immed;
597 cgc.timeout = 5 * 60 * HZ;
599 return cdi->ops->generic_packet(cdi, &cgc);
602 static int cdrom_flush_cache(struct cdrom_device_info *cdi)
604 struct packet_command cgc;
606 init_cdrom_command(&cgc, NULL, 0, CGC_DATA_NONE);
607 cgc.cmd[0] = GPCMD_FLUSH_CACHE;
609 cgc.timeout = 5 * 60 * HZ;
611 return cdi->ops->generic_packet(cdi, &cgc);
614 static int cdrom_mrw_exit(struct cdrom_device_info *cdi)
619 ret = cdrom_get_disc_info(cdi, &di);
620 if (ret < 0 || ret < (int)offsetof(typeof(di),disc_type))
624 if (di.mrw_status == CDM_MRW_BGFORMAT_ACTIVE) {
625 printk(KERN_INFO "cdrom: issuing MRW back ground "
627 ret = cdrom_mrw_bgformat_susp(cdi, 0);
630 if (!ret && cdi->media_written)
631 ret = cdrom_flush_cache(cdi);
636 static int cdrom_mrw_set_lba_space(struct cdrom_device_info *cdi, int space)
638 struct packet_command cgc;
639 struct mode_page_header *mph;
641 int ret, offset, size;
643 init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_READ);
646 cgc.buflen = sizeof(buffer);
648 if ((ret = cdrom_mode_sense(cdi, &cgc, cdi->mrw_mode_page, 0)))
651 mph = (struct mode_page_header *) buffer;
652 offset = be16_to_cpu(mph->desc_length);
653 size = be16_to_cpu(mph->mode_data_length) + 2;
655 buffer[offset + 3] = space;
658 if ((ret = cdrom_mode_select(cdi, &cgc)))
661 printk(KERN_INFO "cdrom: %s: mrw address space %s selected\n", cdi->name, mrw_address_space[space]);
665 static int cdrom_get_random_writable(struct cdrom_device_info *cdi,
666 struct rwrt_feature_desc *rfd)
668 struct packet_command cgc;
672 init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_READ);
674 cgc.cmd[0] = GPCMD_GET_CONFIGURATION; /* often 0x46 */
675 cgc.cmd[3] = CDF_RWRT; /* often 0x0020 */
676 cgc.cmd[8] = sizeof(buffer); /* often 0x18 */
679 if ((ret = cdi->ops->generic_packet(cdi, &cgc)))
682 memcpy(rfd, &buffer[sizeof(struct feature_header)], sizeof (*rfd));
686 static int cdrom_has_defect_mgt(struct cdrom_device_info *cdi)
688 struct packet_command cgc;
690 __be16 *feature_code;
693 init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_READ);
695 cgc.cmd[0] = GPCMD_GET_CONFIGURATION;
696 cgc.cmd[3] = CDF_HWDM;
697 cgc.cmd[8] = sizeof(buffer);
700 if ((ret = cdi->ops->generic_packet(cdi, &cgc)))
703 feature_code = (__be16 *) &buffer[sizeof(struct feature_header)];
704 if (be16_to_cpu(*feature_code) == CDF_HWDM)
711 static int cdrom_is_random_writable(struct cdrom_device_info *cdi, int *write)
713 struct rwrt_feature_desc rfd;
718 if ((ret = cdrom_get_random_writable(cdi, &rfd)))
721 if (CDF_RWRT == be16_to_cpu(rfd.feature_code))
727 static int cdrom_media_erasable(struct cdrom_device_info *cdi)
732 ret = cdrom_get_disc_info(cdi, &di);
733 if (ret < 0 || ret < offsetof(typeof(di), n_first_track))
740 * FIXME: check RO bit
742 static int cdrom_dvdram_open_write(struct cdrom_device_info *cdi)
744 int ret = cdrom_media_erasable(cdi);
747 * allow writable open if media info read worked and media is
748 * erasable, _or_ if it fails since not all drives support it
756 static int cdrom_mrw_open_write(struct cdrom_device_info *cdi)
762 * always reset to DMA lba space on open
764 if (cdrom_mrw_set_lba_space(cdi, MRW_LBA_DMA)) {
765 printk(KERN_ERR "cdrom: failed setting lba address space\n");
769 ret = cdrom_get_disc_info(cdi, &di);
770 if (ret < 0 || ret < offsetof(typeof(di),disc_type))
778 * 0 - not MRW formatted
779 * 1 - MRW bgformat started, but not running or complete
780 * 2 - MRW bgformat in progress
781 * 3 - MRW formatting complete
784 printk(KERN_INFO "cdrom open: mrw_status '%s'\n",
785 mrw_format_status[di.mrw_status]);
788 else if (di.mrw_status == CDM_MRW_BGFORMAT_INACTIVE &&
790 ret = cdrom_mrw_bgformat(cdi, 1);
795 static int mo_open_write(struct cdrom_device_info *cdi)
797 struct packet_command cgc;
801 init_cdrom_command(&cgc, &buffer, 4, CGC_DATA_READ);
805 * obtain write protect information as per
806 * drivers/scsi/sd.c:sd_read_write_protect_flag
809 ret = cdrom_mode_sense(cdi, &cgc, GPMODE_ALL_PAGES, 0);
811 ret = cdrom_mode_sense(cdi, &cgc, GPMODE_VENDOR_PAGE, 0);
814 ret = cdrom_mode_sense(cdi, &cgc, GPMODE_ALL_PAGES, 0);
817 /* drive gave us no info, let the user go ahead */
821 return buffer[3] & 0x80;
824 static int cdrom_ram_open_write(struct cdrom_device_info *cdi)
826 struct rwrt_feature_desc rfd;
829 if ((ret = cdrom_has_defect_mgt(cdi)))
832 if ((ret = cdrom_get_random_writable(cdi, &rfd)))
834 else if (CDF_RWRT == be16_to_cpu(rfd.feature_code))
837 cdinfo(CD_OPEN, "can open for random write\n");
841 static void cdrom_mmc3_profile(struct cdrom_device_info *cdi)
843 struct packet_command cgc;
845 int ret, mmc3_profile;
847 init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_READ);
849 cgc.cmd[0] = GPCMD_GET_CONFIGURATION;
851 cgc.cmd[2] = cgc.cmd[3] = 0; /* Starting Feature Number */
852 cgc.cmd[8] = sizeof(buffer); /* Allocation Length */
855 if ((ret = cdi->ops->generic_packet(cdi, &cgc)))
856 mmc3_profile = 0xffff;
858 mmc3_profile = (buffer[6] << 8) | buffer[7];
860 cdi->mmc3_profile = mmc3_profile;
863 static int cdrom_is_dvd_rw(struct cdrom_device_info *cdi)
865 switch (cdi->mmc3_profile) {
866 case 0x12: /* DVD-RAM */
867 case 0x1A: /* DVD+RW */
875 * returns 0 for ok to open write, non-0 to disallow
877 static int cdrom_open_write(struct cdrom_device_info *cdi)
879 int mrw, mrw_write, ram_write;
883 if (!cdrom_is_mrw(cdi, &mrw_write))
886 if (CDROM_CAN(CDC_MO_DRIVE))
889 (void) cdrom_is_random_writable(cdi, &ram_write);
892 cdi->mask &= ~CDC_MRW;
894 cdi->mask |= CDC_MRW;
897 cdi->mask &= ~CDC_MRW_W;
899 cdi->mask |= CDC_MRW_W;
902 cdi->mask &= ~CDC_RAM;
904 cdi->mask |= CDC_RAM;
906 if (CDROM_CAN(CDC_MRW_W))
907 ret = cdrom_mrw_open_write(cdi);
908 else if (CDROM_CAN(CDC_DVD_RAM))
909 ret = cdrom_dvdram_open_write(cdi);
910 else if (CDROM_CAN(CDC_RAM) &&
911 !CDROM_CAN(CDC_CD_R|CDC_CD_RW|CDC_DVD|CDC_DVD_R|CDC_MRW|CDC_MO_DRIVE))
912 ret = cdrom_ram_open_write(cdi);
913 else if (CDROM_CAN(CDC_MO_DRIVE))
914 ret = mo_open_write(cdi);
915 else if (!cdrom_is_dvd_rw(cdi))
921 static void cdrom_dvd_rw_close_write(struct cdrom_device_info *cdi)
923 struct packet_command cgc;
925 if (cdi->mmc3_profile != 0x1a) {
926 cdinfo(CD_CLOSE, "%s: No DVD+RW\n", cdi->name);
930 if (!cdi->media_written) {
931 cdinfo(CD_CLOSE, "%s: DVD+RW media clean\n", cdi->name);
935 printk(KERN_INFO "cdrom: %s: dirty DVD+RW media, \"finalizing\"\n",
938 init_cdrom_command(&cgc, NULL, 0, CGC_DATA_NONE);
939 cgc.cmd[0] = GPCMD_FLUSH_CACHE;
941 cdi->ops->generic_packet(cdi, &cgc);
943 init_cdrom_command(&cgc, NULL, 0, CGC_DATA_NONE);
944 cgc.cmd[0] = GPCMD_CLOSE_TRACK;
945 cgc.timeout = 3000*HZ;
947 cdi->ops->generic_packet(cdi, &cgc);
949 init_cdrom_command(&cgc, NULL, 0, CGC_DATA_NONE);
950 cgc.cmd[0] = GPCMD_CLOSE_TRACK;
951 cgc.cmd[2] = 2; /* Close session */
953 cgc.timeout = 3000*HZ;
954 cdi->ops->generic_packet(cdi, &cgc);
956 cdi->media_written = 0;
959 static int cdrom_close_write(struct cdrom_device_info *cdi)
962 return cdrom_flush_cache(cdi);
968 /* We use the open-option O_NONBLOCK to indicate that the
969 * purpose of opening is only for subsequent ioctl() calls; no device
970 * integrity checks are performed.
972 * We hope that all cd-player programs will adopt this convention. It
973 * is in their own interest: device control becomes a lot easier
976 int cdrom_open(struct cdrom_device_info *cdi, struct block_device *bdev, fmode_t mode)
980 cdinfo(CD_OPEN, "entering cdrom_open\n");
982 /* if this was a O_NONBLOCK open and we should honor the flags,
983 * do a quick open without drive/disc integrity checks. */
985 if ((mode & FMODE_NDELAY) && (cdi->options & CDO_USE_FFLAGS)) {
986 ret = cdi->ops->open(cdi, 1);
988 ret = open_for_data(cdi);
991 cdrom_mmc3_profile(cdi);
992 if (mode & FMODE_WRITE) {
994 if (cdrom_open_write(cdi))
996 if (!CDROM_CAN(CDC_RAM))
999 cdi->media_written = 0;
1006 cdinfo(CD_OPEN, "Use count for \"/dev/%s\" now %d\n",
1007 cdi->name, cdi->use_count);
1008 /* Do this on open. Don't wait for mount, because they might
1009 not be mounting, but opening with O_NONBLOCK */
1010 check_disk_change(bdev);
1013 if (CDROM_CAN(CDC_LOCK) && cdi->options & CDO_LOCK) {
1014 cdi->ops->lock_door(cdi, 0);
1015 cdinfo(CD_OPEN, "door unlocked.\n");
1017 cdi->ops->release(cdi);
1024 int open_for_data(struct cdrom_device_info * cdi)
1027 struct cdrom_device_ops *cdo = cdi->ops;
1029 cdinfo(CD_OPEN, "entering open_for_data\n");
1030 /* Check if the driver can report drive status. If it can, we
1031 can do clever things. If it can't, well, we at least tried! */
1032 if (cdo->drive_status != NULL) {
1033 ret = cdo->drive_status(cdi, CDSL_CURRENT);
1034 cdinfo(CD_OPEN, "drive_status=%d\n", ret);
1035 if (ret == CDS_TRAY_OPEN) {
1036 cdinfo(CD_OPEN, "the tray is open...\n");
1037 /* can/may i close it? */
1038 if (CDROM_CAN(CDC_CLOSE_TRAY) &&
1039 cdi->options & CDO_AUTO_CLOSE) {
1040 cdinfo(CD_OPEN, "trying to close the tray.\n");
1041 ret=cdo->tray_move(cdi,0);
1043 cdinfo(CD_OPEN, "bummer. tried to close the tray but failed.\n");
1044 /* Ignore the error from the low
1045 level driver. We don't care why it
1046 couldn't close the tray. We only care
1047 that there is no disc in the drive,
1048 since that is the _REAL_ problem here.*/
1050 goto clean_up_and_return;
1053 cdinfo(CD_OPEN, "bummer. this drive can't close the tray.\n");
1055 goto clean_up_and_return;
1057 /* Ok, the door should be closed now.. Check again */
1058 ret = cdo->drive_status(cdi, CDSL_CURRENT);
1059 if ((ret == CDS_NO_DISC) || (ret==CDS_TRAY_OPEN)) {
1060 cdinfo(CD_OPEN, "bummer. the tray is still not closed.\n");
1061 cdinfo(CD_OPEN, "tray might not contain a medium.\n");
1063 goto clean_up_and_return;
1065 cdinfo(CD_OPEN, "the tray is now closed.\n");
1067 /* the door should be closed now, check for the disc */
1068 ret = cdo->drive_status(cdi, CDSL_CURRENT);
1069 if (ret!=CDS_DISC_OK) {
1071 goto clean_up_and_return;
1074 cdrom_count_tracks(cdi, &tracks);
1075 if (tracks.error == CDS_NO_DISC) {
1076 cdinfo(CD_OPEN, "bummer. no disc.\n");
1078 goto clean_up_and_return;
1080 /* CD-Players which don't use O_NONBLOCK, workman
1081 * for example, need bit CDO_CHECK_TYPE cleared! */
1082 if (tracks.data==0) {
1083 if (cdi->options & CDO_CHECK_TYPE) {
1084 /* give people a warning shot, now that CDO_CHECK_TYPE
1085 is the default case! */
1086 cdinfo(CD_OPEN, "bummer. wrong media type.\n");
1087 cdinfo(CD_WARNING, "pid %d must open device O_NONBLOCK!\n",
1088 (unsigned int)task_pid_nr(current));
1090 goto clean_up_and_return;
1093 cdinfo(CD_OPEN, "wrong media type, but CDO_CHECK_TYPE not set.\n");
1097 cdinfo(CD_OPEN, "all seems well, opening the device.\n");
1099 /* all seems well, we can open the device */
1100 ret = cdo->open(cdi, 0); /* open for data */
1101 cdinfo(CD_OPEN, "opening the device gave me %d.\n", ret);
1102 /* After all this careful checking, we shouldn't have problems
1103 opening the device, but we don't want the device locked if
1104 this somehow fails... */
1106 cdinfo(CD_OPEN, "open device failed.\n");
1107 goto clean_up_and_return;
1109 if (CDROM_CAN(CDC_LOCK) && (cdi->options & CDO_LOCK)) {
1110 cdo->lock_door(cdi, 1);
1111 cdinfo(CD_OPEN, "door locked.\n");
1113 cdinfo(CD_OPEN, "device opened successfully.\n");
1116 /* Something failed. Try to unlock the drive, because some drivers
1117 (notably ide-cd) lock the drive after every command. This produced
1118 a nasty bug where after mount failed, the drive would remain locked!
1119 This ensures that the drive gets unlocked after a mount fails. This
1120 is a goto to avoid bloating the driver with redundant code. */
1121 clean_up_and_return:
1122 cdinfo(CD_OPEN, "open failed.\n");
1123 if (CDROM_CAN(CDC_LOCK) && cdi->options & CDO_LOCK) {
1124 cdo->lock_door(cdi, 0);
1125 cdinfo(CD_OPEN, "door unlocked.\n");
1130 /* This code is similar to that in open_for_data. The routine is called
1131 whenever an audio play operation is requested.
1133 static int check_for_audio_disc(struct cdrom_device_info * cdi,
1134 struct cdrom_device_ops * cdo)
1138 cdinfo(CD_OPEN, "entering check_for_audio_disc\n");
1139 if (!(cdi->options & CDO_CHECK_TYPE))
1141 if (cdo->drive_status != NULL) {
1142 ret = cdo->drive_status(cdi, CDSL_CURRENT);
1143 cdinfo(CD_OPEN, "drive_status=%d\n", ret);
1144 if (ret == CDS_TRAY_OPEN) {
1145 cdinfo(CD_OPEN, "the tray is open...\n");
1146 /* can/may i close it? */
1147 if (CDROM_CAN(CDC_CLOSE_TRAY) &&
1148 cdi->options & CDO_AUTO_CLOSE) {
1149 cdinfo(CD_OPEN, "trying to close the tray.\n");
1150 ret=cdo->tray_move(cdi,0);
1152 cdinfo(CD_OPEN, "bummer. tried to close tray but failed.\n");
1153 /* Ignore the error from the low
1154 level driver. We don't care why it
1155 couldn't close the tray. We only care
1156 that there is no disc in the drive,
1157 since that is the _REAL_ problem here.*/
1161 cdinfo(CD_OPEN, "bummer. this driver can't close the tray.\n");
1164 /* Ok, the door should be closed now.. Check again */
1165 ret = cdo->drive_status(cdi, CDSL_CURRENT);
1166 if ((ret == CDS_NO_DISC) || (ret==CDS_TRAY_OPEN)) {
1167 cdinfo(CD_OPEN, "bummer. the tray is still not closed.\n");
1170 if (ret!=CDS_DISC_OK) {
1171 cdinfo(CD_OPEN, "bummer. disc isn't ready.\n");
1174 cdinfo(CD_OPEN, "the tray is now closed.\n");
1177 cdrom_count_tracks(cdi, &tracks);
1179 return(tracks.error);
1181 if (tracks.audio==0)
1182 return -EMEDIUMTYPE;
1187 void cdrom_release(struct cdrom_device_info *cdi, fmode_t mode)
1189 struct cdrom_device_ops *cdo = cdi->ops;
1190 int opened_for_data;
1192 cdinfo(CD_CLOSE, "entering cdrom_release\n");
1194 if (cdi->use_count > 0)
1197 if (cdi->use_count == 0) {
1198 cdinfo(CD_CLOSE, "Use count for \"/dev/%s\" now zero\n", cdi->name);
1199 cdrom_dvd_rw_close_write(cdi);
1201 if ((cdo->capability & CDC_LOCK) && !keeplocked) {
1202 cdinfo(CD_CLOSE, "Unlocking door!\n");
1203 cdo->lock_door(cdi, 0);
1207 opened_for_data = !(cdi->options & CDO_USE_FFLAGS) ||
1208 !(mode & FMODE_NDELAY);
1211 * flush cache on last write release
1213 if (CDROM_CAN(CDC_RAM) && !cdi->use_count && cdi->for_data)
1214 cdrom_close_write(cdi);
1217 if (cdi->use_count == 0) { /* last process that closes dev*/
1218 if (opened_for_data &&
1219 cdi->options & CDO_AUTO_EJECT && CDROM_CAN(CDC_OPEN_TRAY))
1220 cdo->tray_move(cdi, 1);
1224 static int cdrom_read_mech_status(struct cdrom_device_info *cdi,
1225 struct cdrom_changer_info *buf)
1227 struct packet_command cgc;
1228 struct cdrom_device_ops *cdo = cdi->ops;
1232 * Sanyo changer isn't spec compliant (doesn't use regular change
1233 * LOAD_UNLOAD command, and it doesn't implement the mech status
1236 if (cdi->sanyo_slot) {
1237 buf->hdr.nslots = 3;
1238 buf->hdr.curslot = cdi->sanyo_slot == 3 ? 0 : cdi->sanyo_slot;
1239 for (length = 0; length < 3; length++) {
1240 buf->slots[length].disc_present = 1;
1241 buf->slots[length].change = 0;
1246 length = sizeof(struct cdrom_mechstat_header) +
1247 cdi->capacity * sizeof(struct cdrom_slot);
1249 init_cdrom_command(&cgc, buf, length, CGC_DATA_READ);
1250 cgc.cmd[0] = GPCMD_MECHANISM_STATUS;
1251 cgc.cmd[8] = (length >> 8) & 0xff;
1252 cgc.cmd[9] = length & 0xff;
1253 return cdo->generic_packet(cdi, &cgc);
1256 static int cdrom_slot_status(struct cdrom_device_info *cdi, int slot)
1258 struct cdrom_changer_info *info;
1261 cdinfo(CD_CHANGER, "entering cdrom_slot_status()\n");
1262 if (cdi->sanyo_slot)
1265 info = kmalloc(sizeof(*info), GFP_KERNEL);
1269 if ((ret = cdrom_read_mech_status(cdi, info)))
1272 if (info->slots[slot].disc_present)
1282 /* Return the number of slots for an ATAPI/SCSI cdrom,
1283 * return 1 if not a changer.
1285 int cdrom_number_of_slots(struct cdrom_device_info *cdi)
1289 struct cdrom_changer_info *info;
1291 cdinfo(CD_CHANGER, "entering cdrom_number_of_slots()\n");
1292 /* cdrom_read_mech_status requires a valid value for capacity: */
1295 info = kmalloc(sizeof(*info), GFP_KERNEL);
1299 if ((status = cdrom_read_mech_status(cdi, info)) == 0)
1300 nslots = info->hdr.nslots;
1307 /* If SLOT < 0, unload the current slot. Otherwise, try to load SLOT. */
1308 static int cdrom_load_unload(struct cdrom_device_info *cdi, int slot)
1310 struct packet_command cgc;
1312 cdinfo(CD_CHANGER, "entering cdrom_load_unload()\n");
1313 if (cdi->sanyo_slot && slot < 0)
1316 init_cdrom_command(&cgc, NULL, 0, CGC_DATA_NONE);
1317 cgc.cmd[0] = GPCMD_LOAD_UNLOAD;
1318 cgc.cmd[4] = 2 + (slot >= 0);
1320 cgc.timeout = 60 * HZ;
1322 /* The Sanyo 3 CD changer uses byte 7 of the
1323 GPCMD_TEST_UNIT_READY to command to switch CDs instead of
1324 using the GPCMD_LOAD_UNLOAD opcode. */
1325 if (cdi->sanyo_slot && -1 < slot) {
1326 cgc.cmd[0] = GPCMD_TEST_UNIT_READY;
1328 cgc.cmd[4] = cgc.cmd[8] = 0;
1329 cdi->sanyo_slot = slot ? slot : 3;
1332 return cdi->ops->generic_packet(cdi, &cgc);
1335 static int cdrom_select_disc(struct cdrom_device_info *cdi, int slot)
1337 struct cdrom_changer_info *info;
1341 cdinfo(CD_CHANGER, "entering cdrom_select_disc()\n");
1342 if (!CDROM_CAN(CDC_SELECT_DISC))
1343 return -EDRIVE_CANT_DO_THIS;
1345 (void) cdi->ops->media_changed(cdi, slot);
1347 if (slot == CDSL_NONE) {
1348 /* set media changed bits, on both queues */
1349 cdi->mc_flags = 0x3;
1350 return cdrom_load_unload(cdi, -1);
1353 info = kmalloc(sizeof(*info), GFP_KERNEL);
1357 if ((ret = cdrom_read_mech_status(cdi, info))) {
1362 curslot = info->hdr.curslot;
1365 if (cdi->use_count > 1 || keeplocked) {
1366 if (slot == CDSL_CURRENT) {
1373 /* Specifying CDSL_CURRENT will attempt to load the currnet slot,
1374 which is useful if it had been previously unloaded.
1375 Whether it can or not, it returns the current slot.
1376 Similarly, if slot happens to be the current one, we still
1378 if (slot == CDSL_CURRENT)
1381 /* set media changed bits on both queues */
1382 cdi->mc_flags = 0x3;
1383 if ((ret = cdrom_load_unload(cdi, slot)))
1389 /* We want to make media_changed accessible to the user through an
1390 * ioctl. The main problem now is that we must double-buffer the
1391 * low-level implementation, to assure that the VFS and the user both
1392 * see a medium change once.
1396 int media_changed(struct cdrom_device_info *cdi, int queue)
1398 unsigned int mask = (1 << (queue & 1));
1399 int ret = !!(cdi->mc_flags & mask);
1401 if (!CDROM_CAN(CDC_MEDIA_CHANGED))
1403 /* changed since last call? */
1404 if (cdi->ops->media_changed(cdi, CDSL_CURRENT)) {
1405 cdi->mc_flags = 0x3; /* set bit on both queues */
1407 cdi->media_written = 0;
1409 cdi->mc_flags &= ~mask; /* clear bit */
1413 int cdrom_media_changed(struct cdrom_device_info *cdi)
1415 /* This talks to the VFS, which doesn't like errors - just 1 or 0.
1416 * Returning "0" is always safe (media hasn't been changed). Do that
1417 * if the low-level cdrom driver dosn't support media changed. */
1418 if (cdi == NULL || cdi->ops->media_changed == NULL)
1420 if (!CDROM_CAN(CDC_MEDIA_CHANGED))
1422 return media_changed(cdi, 0);
1425 /* badly broken, I know. Is due for a fixup anytime. */
1426 static void cdrom_count_tracks(struct cdrom_device_info *cdi, tracktype* tracks)
1428 struct cdrom_tochdr header;
1429 struct cdrom_tocentry entry;
1436 cdinfo(CD_COUNT_TRACKS, "entering cdrom_count_tracks\n");
1437 /* Grab the TOC header so we can see how many tracks there are */
1438 if ((ret = cdi->ops->audio_ioctl(cdi, CDROMREADTOCHDR, &header))) {
1439 if (ret == -ENOMEDIUM)
1440 tracks->error = CDS_NO_DISC;
1442 tracks->error = CDS_NO_INFO;
1445 /* check what type of tracks are on this disc */
1446 entry.cdte_format = CDROM_MSF;
1447 for (i = header.cdth_trk0; i <= header.cdth_trk1; i++) {
1448 entry.cdte_track = i;
1449 if (cdi->ops->audio_ioctl(cdi, CDROMREADTOCENTRY, &entry)) {
1450 tracks->error=CDS_NO_INFO;
1453 if (entry.cdte_ctrl & CDROM_DATA_TRACK) {
1454 if (entry.cdte_format == 0x10)
1456 else if (entry.cdte_format == 0x20)
1462 cdinfo(CD_COUNT_TRACKS, "track %d: format=%d, ctrl=%d\n",
1463 i, entry.cdte_format, entry.cdte_ctrl);
1465 cdinfo(CD_COUNT_TRACKS, "disc has %d tracks: %d=audio %d=data %d=Cd-I %d=XA\n",
1466 header.cdth_trk1, tracks->audio, tracks->data,
1467 tracks->cdi, tracks->xa);
1470 /* Requests to the low-level drivers will /always/ be done in the
1471 following format convention:
1473 CDROM_LBA: all data-related requests.
1474 CDROM_MSF: all audio-related requests.
1476 However, a low-level implementation is allowed to refuse this
1477 request, and return information in its own favorite format.
1479 It doesn't make sense /at all/ to ask for a play_audio in LBA
1480 format, or ask for multi-session info in MSF format. However, for
1481 backward compatibility these format requests will be satisfied, but
1482 the requests to the low-level drivers will be sanitized in the more
1483 meaningful format indicated above.
1487 void sanitize_format(union cdrom_addr *addr,
1488 u_char * curr, u_char requested)
1490 if (*curr == requested)
1491 return; /* nothing to be done! */
1492 if (requested == CDROM_LBA) {
1493 addr->lba = (int) addr->msf.frame +
1494 75 * (addr->msf.second - 2 + 60 * addr->msf.minute);
1495 } else { /* CDROM_MSF */
1496 int lba = addr->lba;
1497 addr->msf.frame = lba % 75;
1500 addr->msf.second = lba % 60;
1501 addr->msf.minute = lba / 60;
1506 void init_cdrom_command(struct packet_command *cgc, void *buf, int len,
1509 memset(cgc, 0, sizeof(struct packet_command));
1511 memset(buf, 0, len);
1512 cgc->buffer = (char *) buf;
1514 cgc->data_direction = type;
1515 cgc->timeout = CDROM_DEF_TIMEOUT;
1520 #define copy_key(dest,src) memcpy((dest), (src), sizeof(dvd_key))
1521 #define copy_chal(dest,src) memcpy((dest), (src), sizeof(dvd_challenge))
1523 static void setup_report_key(struct packet_command *cgc, unsigned agid, unsigned type)
1525 cgc->cmd[0] = GPCMD_REPORT_KEY;
1526 cgc->cmd[10] = type | (agid << 6);
1528 case 0: case 8: case 5: {
1541 cgc->cmd[9] = cgc->buflen;
1542 cgc->data_direction = CGC_DATA_READ;
1545 static void setup_send_key(struct packet_command *cgc, unsigned agid, unsigned type)
1547 cgc->cmd[0] = GPCMD_SEND_KEY;
1548 cgc->cmd[10] = type | (agid << 6);
1563 cgc->cmd[9] = cgc->buflen;
1564 cgc->data_direction = CGC_DATA_WRITE;
1567 static int dvd_do_auth(struct cdrom_device_info *cdi, dvd_authinfo *ai)
1571 struct packet_command cgc;
1572 struct cdrom_device_ops *cdo = cdi->ops;
1573 rpc_state_t rpc_state;
1575 memset(buf, 0, sizeof(buf));
1576 init_cdrom_command(&cgc, buf, 0, CGC_DATA_READ);
1580 case DVD_LU_SEND_AGID:
1581 cdinfo(CD_DVD, "entering DVD_LU_SEND_AGID\n");
1583 setup_report_key(&cgc, ai->lsa.agid, 0);
1585 if ((ret = cdo->generic_packet(cdi, &cgc)))
1588 ai->lsa.agid = buf[7] >> 6;
1589 /* Returning data, let host change state */
1592 case DVD_LU_SEND_KEY1:
1593 cdinfo(CD_DVD, "entering DVD_LU_SEND_KEY1\n");
1594 setup_report_key(&cgc, ai->lsk.agid, 2);
1596 if ((ret = cdo->generic_packet(cdi, &cgc)))
1599 copy_key(ai->lsk.key, &buf[4]);
1600 /* Returning data, let host change state */
1603 case DVD_LU_SEND_CHALLENGE:
1604 cdinfo(CD_DVD, "entering DVD_LU_SEND_CHALLENGE\n");
1605 setup_report_key(&cgc, ai->lsc.agid, 1);
1607 if ((ret = cdo->generic_packet(cdi, &cgc)))
1610 copy_chal(ai->lsc.chal, &buf[4]);
1611 /* Returning data, let host change state */
1615 case DVD_LU_SEND_TITLE_KEY:
1616 cdinfo(CD_DVD, "entering DVD_LU_SEND_TITLE_KEY\n");
1618 setup_report_key(&cgc, ai->lstk.agid, 4);
1619 cgc.cmd[5] = ai->lstk.lba;
1620 cgc.cmd[4] = ai->lstk.lba >> 8;
1621 cgc.cmd[3] = ai->lstk.lba >> 16;
1622 cgc.cmd[2] = ai->lstk.lba >> 24;
1624 if ((ret = cdo->generic_packet(cdi, &cgc)))
1627 ai->lstk.cpm = (buf[4] >> 7) & 1;
1628 ai->lstk.cp_sec = (buf[4] >> 6) & 1;
1629 ai->lstk.cgms = (buf[4] >> 4) & 3;
1630 copy_key(ai->lstk.title_key, &buf[5]);
1631 /* Returning data, let host change state */
1634 case DVD_LU_SEND_ASF:
1635 cdinfo(CD_DVD, "entering DVD_LU_SEND_ASF\n");
1636 setup_report_key(&cgc, ai->lsasf.agid, 5);
1638 if ((ret = cdo->generic_packet(cdi, &cgc)))
1641 ai->lsasf.asf = buf[7] & 1;
1644 /* LU data receive (LU changes state) */
1645 case DVD_HOST_SEND_CHALLENGE:
1646 cdinfo(CD_DVD, "entering DVD_HOST_SEND_CHALLENGE\n");
1647 setup_send_key(&cgc, ai->hsc.agid, 1);
1649 copy_chal(&buf[4], ai->hsc.chal);
1651 if ((ret = cdo->generic_packet(cdi, &cgc)))
1654 ai->type = DVD_LU_SEND_KEY1;
1657 case DVD_HOST_SEND_KEY2:
1658 cdinfo(CD_DVD, "entering DVD_HOST_SEND_KEY2\n");
1659 setup_send_key(&cgc, ai->hsk.agid, 3);
1661 copy_key(&buf[4], ai->hsk.key);
1663 if ((ret = cdo->generic_packet(cdi, &cgc))) {
1664 ai->type = DVD_AUTH_FAILURE;
1667 ai->type = DVD_AUTH_ESTABLISHED;
1671 case DVD_INVALIDATE_AGID:
1673 cdinfo(CD_DVD, "entering DVD_INVALIDATE_AGID\n");
1674 setup_report_key(&cgc, ai->lsa.agid, 0x3f);
1675 if ((ret = cdo->generic_packet(cdi, &cgc)))
1679 /* Get region settings */
1680 case DVD_LU_SEND_RPC_STATE:
1681 cdinfo(CD_DVD, "entering DVD_LU_SEND_RPC_STATE\n");
1682 setup_report_key(&cgc, 0, 8);
1683 memset(&rpc_state, 0, sizeof(rpc_state_t));
1684 cgc.buffer = (char *) &rpc_state;
1686 if ((ret = cdo->generic_packet(cdi, &cgc)))
1689 ai->lrpcs.type = rpc_state.type_code;
1690 ai->lrpcs.vra = rpc_state.vra;
1691 ai->lrpcs.ucca = rpc_state.ucca;
1692 ai->lrpcs.region_mask = rpc_state.region_mask;
1693 ai->lrpcs.rpc_scheme = rpc_state.rpc_scheme;
1696 /* Set region settings */
1697 case DVD_HOST_SEND_RPC_STATE:
1698 cdinfo(CD_DVD, "entering DVD_HOST_SEND_RPC_STATE\n");
1699 setup_send_key(&cgc, 0, 6);
1701 buf[4] = ai->hrpcs.pdrc;
1703 if ((ret = cdo->generic_packet(cdi, &cgc)))
1708 cdinfo(CD_WARNING, "Invalid DVD key ioctl (%d)\n", ai->type);
1715 static int dvd_read_physical(struct cdrom_device_info *cdi, dvd_struct *s,
1716 struct packet_command *cgc)
1718 unsigned char buf[21], *base;
1719 struct dvd_layer *layer;
1720 struct cdrom_device_ops *cdo = cdi->ops;
1721 int ret, layer_num = s->physical.layer_num;
1723 if (layer_num >= DVD_LAYERS)
1726 init_cdrom_command(cgc, buf, sizeof(buf), CGC_DATA_READ);
1727 cgc->cmd[0] = GPCMD_READ_DVD_STRUCTURE;
1728 cgc->cmd[6] = layer_num;
1729 cgc->cmd[7] = s->type;
1730 cgc->cmd[9] = cgc->buflen & 0xff;
1733 * refrain from reporting errors on non-existing layers (mainly)
1737 ret = cdo->generic_packet(cdi, cgc);
1742 layer = &s->physical.layer[layer_num];
1745 * place the data... really ugly, but at least we won't have to
1746 * worry about endianess in userspace.
1748 memset(layer, 0, sizeof(*layer));
1749 layer->book_version = base[0] & 0xf;
1750 layer->book_type = base[0] >> 4;
1751 layer->min_rate = base[1] & 0xf;
1752 layer->disc_size = base[1] >> 4;
1753 layer->layer_type = base[2] & 0xf;
1754 layer->track_path = (base[2] >> 4) & 1;
1755 layer->nlayers = (base[2] >> 5) & 3;
1756 layer->track_density = base[3] & 0xf;
1757 layer->linear_density = base[3] >> 4;
1758 layer->start_sector = base[5] << 16 | base[6] << 8 | base[7];
1759 layer->end_sector = base[9] << 16 | base[10] << 8 | base[11];
1760 layer->end_sector_l0 = base[13] << 16 | base[14] << 8 | base[15];
1761 layer->bca = base[16] >> 7;
1766 static int dvd_read_copyright(struct cdrom_device_info *cdi, dvd_struct *s,
1767 struct packet_command *cgc)
1771 struct cdrom_device_ops *cdo = cdi->ops;
1773 init_cdrom_command(cgc, buf, sizeof(buf), CGC_DATA_READ);
1774 cgc->cmd[0] = GPCMD_READ_DVD_STRUCTURE;
1775 cgc->cmd[6] = s->copyright.layer_num;
1776 cgc->cmd[7] = s->type;
1777 cgc->cmd[8] = cgc->buflen >> 8;
1778 cgc->cmd[9] = cgc->buflen & 0xff;
1780 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,
1791 struct packet_command *cgc)
1795 struct cdrom_device_ops *cdo = cdi->ops;
1797 size = sizeof(s->disckey.value) + 4;
1799 buf = kmalloc(size, GFP_KERNEL);
1803 init_cdrom_command(cgc, buf, size, CGC_DATA_READ);
1804 cgc->cmd[0] = GPCMD_READ_DVD_STRUCTURE;
1805 cgc->cmd[7] = s->type;
1806 cgc->cmd[8] = size >> 8;
1807 cgc->cmd[9] = size & 0xff;
1808 cgc->cmd[10] = s->disckey.agid << 6;
1810 ret = cdo->generic_packet(cdi, cgc);
1812 memcpy(s->disckey.value, &buf[4], sizeof(s->disckey.value));
1818 static int dvd_read_bca(struct cdrom_device_info *cdi, dvd_struct *s,
1819 struct packet_command *cgc)
1821 int ret, size = 4 + 188;
1823 struct cdrom_device_ops *cdo = cdi->ops;
1825 buf = kmalloc(size, GFP_KERNEL);
1829 init_cdrom_command(cgc, buf, size, CGC_DATA_READ);
1830 cgc->cmd[0] = GPCMD_READ_DVD_STRUCTURE;
1831 cgc->cmd[7] = s->type;
1832 cgc->cmd[9] = cgc->buflen & 0xff;
1834 ret = cdo->generic_packet(cdi, cgc);
1838 s->bca.len = buf[0] << 8 | buf[1];
1839 if (s->bca.len < 12 || s->bca.len > 188) {
1840 cdinfo(CD_WARNING, "Received invalid BCA length (%d)\n", s->bca.len);
1844 memcpy(s->bca.value, &buf[4], s->bca.len);
1851 static int dvd_read_manufact(struct cdrom_device_info *cdi, dvd_struct *s,
1852 struct packet_command *cgc)
1856 struct cdrom_device_ops *cdo = cdi->ops;
1858 size = sizeof(s->manufact.value) + 4;
1860 buf = kmalloc(size, GFP_KERNEL);
1864 init_cdrom_command(cgc, buf, size, CGC_DATA_READ);
1865 cgc->cmd[0] = GPCMD_READ_DVD_STRUCTURE;
1866 cgc->cmd[7] = s->type;
1867 cgc->cmd[8] = size >> 8;
1868 cgc->cmd[9] = size & 0xff;
1870 ret = cdo->generic_packet(cdi, cgc);
1874 s->manufact.len = buf[0] << 8 | buf[1];
1875 if (s->manufact.len < 0 || s->manufact.len > 2048) {
1876 cdinfo(CD_WARNING, "Received invalid manufacture info length"
1877 " (%d)\n", s->manufact.len);
1880 memcpy(s->manufact.value, &buf[4], s->manufact.len);
1888 static int dvd_read_struct(struct cdrom_device_info *cdi, dvd_struct *s,
1889 struct packet_command *cgc)
1892 case DVD_STRUCT_PHYSICAL:
1893 return dvd_read_physical(cdi, s, cgc);
1895 case DVD_STRUCT_COPYRIGHT:
1896 return dvd_read_copyright(cdi, s, cgc);
1898 case DVD_STRUCT_DISCKEY:
1899 return dvd_read_disckey(cdi, s, cgc);
1901 case DVD_STRUCT_BCA:
1902 return dvd_read_bca(cdi, s, cgc);
1904 case DVD_STRUCT_MANUFACT:
1905 return dvd_read_manufact(cdi, s, cgc);
1908 cdinfo(CD_WARNING, ": Invalid DVD structure read requested (%d)\n",
1914 int cdrom_mode_sense(struct cdrom_device_info *cdi,
1915 struct packet_command *cgc,
1916 int page_code, int page_control)
1918 struct cdrom_device_ops *cdo = cdi->ops;
1920 memset(cgc->cmd, 0, sizeof(cgc->cmd));
1922 cgc->cmd[0] = GPCMD_MODE_SENSE_10;
1923 cgc->cmd[2] = page_code | (page_control << 6);
1924 cgc->cmd[7] = cgc->buflen >> 8;
1925 cgc->cmd[8] = cgc->buflen & 0xff;
1926 cgc->data_direction = CGC_DATA_READ;
1927 return cdo->generic_packet(cdi, cgc);
1930 int cdrom_mode_select(struct cdrom_device_info *cdi,
1931 struct packet_command *cgc)
1933 struct cdrom_device_ops *cdo = cdi->ops;
1935 memset(cgc->cmd, 0, sizeof(cgc->cmd));
1936 memset(cgc->buffer, 0, 2);
1937 cgc->cmd[0] = GPCMD_MODE_SELECT_10;
1938 cgc->cmd[1] = 0x10; /* PF */
1939 cgc->cmd[7] = cgc->buflen >> 8;
1940 cgc->cmd[8] = cgc->buflen & 0xff;
1941 cgc->data_direction = CGC_DATA_WRITE;
1942 return cdo->generic_packet(cdi, cgc);
1945 static int cdrom_read_subchannel(struct cdrom_device_info *cdi,
1946 struct cdrom_subchnl *subchnl, int mcn)
1948 struct cdrom_device_ops *cdo = cdi->ops;
1949 struct packet_command cgc;
1953 init_cdrom_command(&cgc, buffer, 16, CGC_DATA_READ);
1954 cgc.cmd[0] = GPCMD_READ_SUBCHANNEL;
1955 cgc.cmd[1] = 2; /* MSF addressing */
1956 cgc.cmd[2] = 0x40; /* request subQ data */
1957 cgc.cmd[3] = mcn ? 2 : 1;
1960 if ((ret = cdo->generic_packet(cdi, &cgc)))
1963 subchnl->cdsc_audiostatus = cgc.buffer[1];
1964 subchnl->cdsc_format = CDROM_MSF;
1965 subchnl->cdsc_ctrl = cgc.buffer[5] & 0xf;
1966 subchnl->cdsc_trk = cgc.buffer[6];
1967 subchnl->cdsc_ind = cgc.buffer[7];
1969 subchnl->cdsc_reladdr.msf.minute = cgc.buffer[13];
1970 subchnl->cdsc_reladdr.msf.second = cgc.buffer[14];
1971 subchnl->cdsc_reladdr.msf.frame = cgc.buffer[15];
1972 subchnl->cdsc_absaddr.msf.minute = cgc.buffer[9];
1973 subchnl->cdsc_absaddr.msf.second = cgc.buffer[10];
1974 subchnl->cdsc_absaddr.msf.frame = cgc.buffer[11];
1980 * Specific READ_10 interface
1982 static int cdrom_read_cd(struct cdrom_device_info *cdi,
1983 struct packet_command *cgc, int lba,
1984 int blocksize, int nblocks)
1986 struct cdrom_device_ops *cdo = cdi->ops;
1988 memset(&cgc->cmd, 0, sizeof(cgc->cmd));
1989 cgc->cmd[0] = GPCMD_READ_10;
1990 cgc->cmd[2] = (lba >> 24) & 0xff;
1991 cgc->cmd[3] = (lba >> 16) & 0xff;
1992 cgc->cmd[4] = (lba >> 8) & 0xff;
1993 cgc->cmd[5] = lba & 0xff;
1994 cgc->cmd[6] = (nblocks >> 16) & 0xff;
1995 cgc->cmd[7] = (nblocks >> 8) & 0xff;
1996 cgc->cmd[8] = nblocks & 0xff;
1997 cgc->buflen = blocksize * nblocks;
1998 return cdo->generic_packet(cdi, cgc);
2001 /* very generic interface for reading the various types of blocks */
2002 static int cdrom_read_block(struct cdrom_device_info *cdi,
2003 struct packet_command *cgc,
2004 int lba, int nblocks, int format, int blksize)
2006 struct cdrom_device_ops *cdo = cdi->ops;
2008 memset(&cgc->cmd, 0, sizeof(cgc->cmd));
2009 cgc->cmd[0] = GPCMD_READ_CD;
2010 /* expected sector size - cdda,mode1,etc. */
2011 cgc->cmd[1] = format << 2;
2012 /* starting address */
2013 cgc->cmd[2] = (lba >> 24) & 0xff;
2014 cgc->cmd[3] = (lba >> 16) & 0xff;
2015 cgc->cmd[4] = (lba >> 8) & 0xff;
2016 cgc->cmd[5] = lba & 0xff;
2017 /* number of blocks */
2018 cgc->cmd[6] = (nblocks >> 16) & 0xff;
2019 cgc->cmd[7] = (nblocks >> 8) & 0xff;
2020 cgc->cmd[8] = nblocks & 0xff;
2021 cgc->buflen = blksize * nblocks;
2023 /* set the header info returned */
2025 case CD_FRAMESIZE_RAW0 : cgc->cmd[9] = 0x58; break;
2026 case CD_FRAMESIZE_RAW1 : cgc->cmd[9] = 0x78; break;
2027 case CD_FRAMESIZE_RAW : cgc->cmd[9] = 0xf8; break;
2028 default : cgc->cmd[9] = 0x10;
2031 return cdo->generic_packet(cdi, cgc);
2034 static int cdrom_read_cdda_old(struct cdrom_device_info *cdi, __u8 __user *ubuf,
2035 int lba, int nframes)
2037 struct packet_command cgc;
2041 cdi->last_sense = 0;
2043 memset(&cgc, 0, sizeof(cgc));
2046 * start with will ra.nframes size, back down if alloc fails
2050 cgc.buffer = kmalloc(CD_FRAMESIZE_RAW * nr, GFP_KERNEL);
2060 if (!access_ok(VERIFY_WRITE, ubuf, nframes * CD_FRAMESIZE_RAW)) {
2065 cgc.data_direction = CGC_DATA_READ;
2066 while (nframes > 0) {
2070 ret = cdrom_read_block(cdi, &cgc, lba, nr, 1, CD_FRAMESIZE_RAW);
2073 if (__copy_to_user(ubuf, cgc.buffer, CD_FRAMESIZE_RAW * nr)) {
2077 ubuf += CD_FRAMESIZE_RAW * nr;
2086 static int cdrom_read_cdda_bpc(struct cdrom_device_info *cdi, __u8 __user *ubuf,
2087 int lba, int nframes)
2089 struct request_queue *q = cdi->disk->queue;
2098 cdi->last_sense = 0;
2102 if (cdi->cdda_method == CDDA_BPC_SINGLE)
2104 if (nr * CD_FRAMESIZE_RAW > (q->max_sectors << 9))
2105 nr = (q->max_sectors << 9) / CD_FRAMESIZE_RAW;
2107 len = nr * CD_FRAMESIZE_RAW;
2109 rq = blk_get_request(q, READ, GFP_KERNEL);
2115 ret = blk_rq_map_user(q, rq, NULL, ubuf, len, GFP_KERNEL);
2117 blk_put_request(rq);
2121 rq->cmd[0] = GPCMD_READ_CD;
2122 rq->cmd[1] = 1 << 2;
2123 rq->cmd[2] = (lba >> 24) & 0xff;
2124 rq->cmd[3] = (lba >> 16) & 0xff;
2125 rq->cmd[4] = (lba >> 8) & 0xff;
2126 rq->cmd[5] = lba & 0xff;
2127 rq->cmd[6] = (nr >> 16) & 0xff;
2128 rq->cmd[7] = (nr >> 8) & 0xff;
2129 rq->cmd[8] = nr & 0xff;
2133 rq->cmd_type = REQ_TYPE_BLOCK_PC;
2134 rq->timeout = 60 * HZ;
2137 if (blk_execute_rq(q, cdi->disk, rq, 0)) {
2138 struct request_sense *s = rq->sense;
2140 cdi->last_sense = s->sense_key;
2143 if (blk_rq_unmap_user(bio))
2145 blk_put_request(rq);
2158 static int cdrom_read_cdda(struct cdrom_device_info *cdi, __u8 __user *ubuf,
2159 int lba, int nframes)
2163 if (cdi->cdda_method == CDDA_OLD)
2164 return cdrom_read_cdda_old(cdi, ubuf, lba, nframes);
2168 * for anything else than success and io error, we need to retry
2170 ret = cdrom_read_cdda_bpc(cdi, ubuf, lba, nframes);
2171 if (!ret || ret != -EIO)
2175 * I've seen drives get sense 4/8/3 udma crc errors on multi
2176 * frame dma, so drop to single frame dma if we need to
2178 if (cdi->cdda_method == CDDA_BPC_FULL && nframes > 1) {
2179 printk("cdrom: dropping to single frame dma\n");
2180 cdi->cdda_method = CDDA_BPC_SINGLE;
2185 * so we have an io error of some sort with multi frame dma. if the
2186 * condition wasn't a hardware error
2187 * problems, not for any error
2189 if (cdi->last_sense != 0x04 && cdi->last_sense != 0x0b)
2192 printk("cdrom: dropping to old style cdda (sense=%x)\n", cdi->last_sense);
2193 cdi->cdda_method = CDDA_OLD;
2194 return cdrom_read_cdda_old(cdi, ubuf, lba, nframes);
2197 static int cdrom_ioctl_multisession(struct cdrom_device_info *cdi,
2200 struct cdrom_multisession ms_info;
2201 u8 requested_format;
2204 cdinfo(CD_DO_IOCTL, "entering CDROMMULTISESSION\n");
2206 if (!(cdi->ops->capability & CDC_MULTI_SESSION))
2209 if (copy_from_user(&ms_info, argp, sizeof(ms_info)))
2212 requested_format = ms_info.addr_format;
2213 if (requested_format != CDROM_MSF && requested_format != CDROM_LBA)
2215 ms_info.addr_format = CDROM_LBA;
2217 ret = cdi->ops->get_last_session(cdi, &ms_info);
2221 sanitize_format(&ms_info.addr, &ms_info.addr_format, requested_format);
2223 if (copy_to_user(argp, &ms_info, sizeof(ms_info)))
2226 cdinfo(CD_DO_IOCTL, "CDROMMULTISESSION successful\n");
2230 static int cdrom_ioctl_eject(struct cdrom_device_info *cdi)
2232 cdinfo(CD_DO_IOCTL, "entering CDROMEJECT\n");
2234 if (!CDROM_CAN(CDC_OPEN_TRAY))
2236 if (cdi->use_count != 1 || keeplocked)
2238 if (CDROM_CAN(CDC_LOCK)) {
2239 int ret = cdi->ops->lock_door(cdi, 0);
2244 return cdi->ops->tray_move(cdi, 1);
2247 static int cdrom_ioctl_closetray(struct cdrom_device_info *cdi)
2249 cdinfo(CD_DO_IOCTL, "entering CDROMCLOSETRAY\n");
2251 if (!CDROM_CAN(CDC_CLOSE_TRAY))
2253 return cdi->ops->tray_move(cdi, 0);
2256 static int cdrom_ioctl_eject_sw(struct cdrom_device_info *cdi,
2259 cdinfo(CD_DO_IOCTL, "entering CDROMEJECT_SW\n");
2261 if (!CDROM_CAN(CDC_OPEN_TRAY))
2266 cdi->options &= ~(CDO_AUTO_CLOSE | CDO_AUTO_EJECT);
2268 cdi->options |= CDO_AUTO_CLOSE | CDO_AUTO_EJECT;
2272 static int cdrom_ioctl_media_changed(struct cdrom_device_info *cdi,
2275 struct cdrom_changer_info *info;
2278 cdinfo(CD_DO_IOCTL, "entering CDROM_MEDIA_CHANGED\n");
2280 if (!CDROM_CAN(CDC_MEDIA_CHANGED))
2283 /* cannot select disc or select current disc */
2284 if (!CDROM_CAN(CDC_SELECT_DISC) || arg == CDSL_CURRENT)
2285 return media_changed(cdi, 1);
2287 if ((unsigned int)arg >= cdi->capacity)
2290 info = kmalloc(sizeof(*info), GFP_KERNEL);
2294 ret = cdrom_read_mech_status(cdi, info);
2296 ret = info->slots[arg].change;
2301 static int cdrom_ioctl_set_options(struct cdrom_device_info *cdi,
2304 cdinfo(CD_DO_IOCTL, "entering CDROM_SET_OPTIONS\n");
2307 * Options need to be in sync with capability.
2308 * Too late for that, so we have to check each one separately.
2311 case CDO_USE_FFLAGS:
2312 case CDO_CHECK_TYPE:
2315 if (!CDROM_CAN(CDC_LOCK))
2319 return cdi->options;
2320 /* default is basically CDO_[AUTO_CLOSE|AUTO_EJECT] */
2322 if (!CDROM_CAN(arg))
2325 cdi->options |= (int) arg;
2326 return cdi->options;
2329 static int cdrom_ioctl_clear_options(struct cdrom_device_info *cdi,
2332 cdinfo(CD_DO_IOCTL, "entering CDROM_CLEAR_OPTIONS\n");
2334 cdi->options &= ~(int) arg;
2335 return cdi->options;
2338 static int cdrom_ioctl_select_speed(struct cdrom_device_info *cdi,
2341 cdinfo(CD_DO_IOCTL, "entering CDROM_SELECT_SPEED\n");
2343 if (!CDROM_CAN(CDC_SELECT_SPEED))
2345 return cdi->ops->select_speed(cdi, arg);
2348 static int cdrom_ioctl_select_disc(struct cdrom_device_info *cdi,
2351 cdinfo(CD_DO_IOCTL, "entering CDROM_SELECT_DISC\n");
2353 if (!CDROM_CAN(CDC_SELECT_DISC))
2356 if (arg != CDSL_CURRENT && arg != CDSL_NONE) {
2357 if ((int)arg >= cdi->capacity)
2362 * ->select_disc is a hook to allow a driver-specific way of
2363 * seleting disc. However, since there is no equivalent hook for
2364 * cdrom_slot_status this may not actually be useful...
2366 if (cdi->ops->select_disc)
2367 return cdi->ops->select_disc(cdi, arg);
2369 cdinfo(CD_CHANGER, "Using generic cdrom_select_disc()\n");
2370 return cdrom_select_disc(cdi, arg);
2373 static int cdrom_ioctl_reset(struct cdrom_device_info *cdi,
2374 struct block_device *bdev)
2376 cdinfo(CD_DO_IOCTL, "entering CDROM_RESET\n");
2378 if (!capable(CAP_SYS_ADMIN))
2380 if (!CDROM_CAN(CDC_RESET))
2382 invalidate_bdev(bdev);
2383 return cdi->ops->reset(cdi);
2386 static int cdrom_ioctl_lock_door(struct cdrom_device_info *cdi,
2389 cdinfo(CD_DO_IOCTL, "%socking door.\n", arg ? "L" : "Unl");
2391 if (!CDROM_CAN(CDC_LOCK))
2392 return -EDRIVE_CANT_DO_THIS;
2394 keeplocked = arg ? 1 : 0;
2397 * Don't unlock the door on multiple opens by default, but allow
2400 if (cdi->use_count != 1 && !arg && !capable(CAP_SYS_ADMIN))
2402 return cdi->ops->lock_door(cdi, arg);
2405 static int cdrom_ioctl_debug(struct cdrom_device_info *cdi,
2408 cdinfo(CD_DO_IOCTL, "%sabling debug.\n", arg ? "En" : "Dis");
2410 if (!capable(CAP_SYS_ADMIN))
2412 debug = arg ? 1 : 0;
2416 static int cdrom_ioctl_get_capability(struct cdrom_device_info *cdi)
2418 cdinfo(CD_DO_IOCTL, "entering CDROM_GET_CAPABILITY\n");
2419 return (cdi->ops->capability & ~cdi->mask);
2423 * The following function is implemented, although very few audio
2424 * discs give Universal Product Code information, which should just be
2425 * the Medium Catalog Number on the box. Note, that the way the code
2426 * is written on the CD is /not/ uniform across all discs!
2428 static int cdrom_ioctl_get_mcn(struct cdrom_device_info *cdi,
2431 struct cdrom_mcn mcn;
2434 cdinfo(CD_DO_IOCTL, "entering CDROM_GET_MCN\n");
2436 if (!(cdi->ops->capability & CDC_MCN))
2438 ret = cdi->ops->get_mcn(cdi, &mcn);
2442 if (copy_to_user(argp, &mcn, sizeof(mcn)))
2444 cdinfo(CD_DO_IOCTL, "CDROM_GET_MCN successful\n");
2448 static int cdrom_ioctl_drive_status(struct cdrom_device_info *cdi,
2451 cdinfo(CD_DO_IOCTL, "entering CDROM_DRIVE_STATUS\n");
2453 if (!(cdi->ops->capability & CDC_DRIVE_STATUS))
2455 if (!CDROM_CAN(CDC_SELECT_DISC) ||
2456 (arg == CDSL_CURRENT || arg == CDSL_NONE))
2457 return cdi->ops->drive_status(cdi, CDSL_CURRENT);
2458 if (((int)arg >= cdi->capacity))
2460 return cdrom_slot_status(cdi, arg);
2464 * Ok, this is where problems start. The current interface for the
2465 * CDROM_DISC_STATUS ioctl is flawed. It makes the false assumption that
2466 * CDs are all CDS_DATA_1 or all CDS_AUDIO, etc. Unfortunatly, while this
2467 * is often the case, it is also very common for CDs to have some tracks
2468 * with data, and some tracks with audio. Just because I feel like it,
2469 * I declare the following to be the best way to cope. If the CD has ANY
2470 * data tracks on it, it will be returned as a data CD. If it has any XA
2471 * tracks, I will return it as that. Now I could simplify this interface
2472 * by combining these returns with the above, but this more clearly
2473 * demonstrates the problem with the current interface. Too bad this
2474 * wasn't designed to use bitmasks... -Erik
2476 * Well, now we have the option CDS_MIXED: a mixed-type CD.
2477 * User level programmers might feel the ioctl is not very useful.
2480 static int cdrom_ioctl_disc_status(struct cdrom_device_info *cdi)
2484 cdinfo(CD_DO_IOCTL, "entering CDROM_DISC_STATUS\n");
2486 cdrom_count_tracks(cdi, &tracks);
2488 return tracks.error;
2490 /* Policy mode on */
2491 if (tracks.audio > 0) {
2492 if (!tracks.data && !tracks.cdi && !tracks.xa)
2502 if (tracks.data > 0)
2504 /* Policy mode off */
2506 cdinfo(CD_WARNING,"This disc doesn't have any tracks I recognize!\n");
2510 static int cdrom_ioctl_changer_nslots(struct cdrom_device_info *cdi)
2512 cdinfo(CD_DO_IOCTL, "entering CDROM_CHANGER_NSLOTS\n");
2513 return cdi->capacity;
2516 static int cdrom_ioctl_get_subchnl(struct cdrom_device_info *cdi,
2519 struct cdrom_subchnl q;
2523 /* cdinfo(CD_DO_IOCTL,"entering CDROMSUBCHNL\n");*/
2525 if (copy_from_user(&q, argp, sizeof(q)))
2528 requested = q.cdsc_format;
2529 if (requested != CDROM_MSF && requested != CDROM_LBA)
2531 q.cdsc_format = CDROM_MSF;
2533 ret = cdi->ops->audio_ioctl(cdi, CDROMSUBCHNL, &q);
2537 back = q.cdsc_format; /* local copy */
2538 sanitize_format(&q.cdsc_absaddr, &back, requested);
2539 sanitize_format(&q.cdsc_reladdr, &q.cdsc_format, requested);
2541 if (copy_to_user(argp, &q, sizeof(q)))
2543 /* cdinfo(CD_DO_IOCTL, "CDROMSUBCHNL successful\n"); */
2547 static int cdrom_ioctl_read_tochdr(struct cdrom_device_info *cdi,
2550 struct cdrom_tochdr header;
2553 /* cdinfo(CD_DO_IOCTL, "entering CDROMREADTOCHDR\n"); */
2555 if (copy_from_user(&header, argp, sizeof(header)))
2558 ret = cdi->ops->audio_ioctl(cdi, CDROMREADTOCHDR, &header);
2562 if (copy_to_user(argp, &header, sizeof(header)))
2564 /* cdinfo(CD_DO_IOCTL, "CDROMREADTOCHDR successful\n"); */
2568 static int cdrom_ioctl_read_tocentry(struct cdrom_device_info *cdi,
2571 struct cdrom_tocentry entry;
2572 u8 requested_format;
2575 /* cdinfo(CD_DO_IOCTL, "entering CDROMREADTOCENTRY\n"); */
2577 if (copy_from_user(&entry, argp, sizeof(entry)))
2580 requested_format = entry.cdte_format;
2581 if (requested_format != CDROM_MSF && requested_format != CDROM_LBA)
2583 /* make interface to low-level uniform */
2584 entry.cdte_format = CDROM_MSF;
2585 ret = cdi->ops->audio_ioctl(cdi, CDROMREADTOCENTRY, &entry);
2588 sanitize_format(&entry.cdte_addr, &entry.cdte_format, requested_format);
2590 if (copy_to_user(argp, &entry, sizeof(entry)))
2592 /* cdinfo(CD_DO_IOCTL, "CDROMREADTOCENTRY successful\n"); */
2596 static int cdrom_ioctl_play_msf(struct cdrom_device_info *cdi,
2599 struct cdrom_msf msf;
2601 cdinfo(CD_DO_IOCTL, "entering CDROMPLAYMSF\n");
2603 if (!CDROM_CAN(CDC_PLAY_AUDIO))
2605 if (copy_from_user(&msf, argp, sizeof(msf)))
2607 return cdi->ops->audio_ioctl(cdi, CDROMPLAYMSF, &msf);
2610 static int cdrom_ioctl_play_trkind(struct cdrom_device_info *cdi,
2616 cdinfo(CD_DO_IOCTL, "entering CDROMPLAYTRKIND\n");
2618 if (!CDROM_CAN(CDC_PLAY_AUDIO))
2620 if (copy_from_user(&ti, argp, sizeof(ti)))
2623 ret = check_for_audio_disc(cdi, cdi->ops);
2626 return cdi->ops->audio_ioctl(cdi, CDROMPLAYTRKIND, &ti);
2628 static int cdrom_ioctl_volctrl(struct cdrom_device_info *cdi,
2631 struct cdrom_volctrl volume;
2633 cdinfo(CD_DO_IOCTL, "entering CDROMVOLCTRL\n");
2635 if (!CDROM_CAN(CDC_PLAY_AUDIO))
2637 if (copy_from_user(&volume, argp, sizeof(volume)))
2639 return cdi->ops->audio_ioctl(cdi, CDROMVOLCTRL, &volume);
2642 static int cdrom_ioctl_volread(struct cdrom_device_info *cdi,
2645 struct cdrom_volctrl volume;
2648 cdinfo(CD_DO_IOCTL, "entering CDROMVOLREAD\n");
2650 if (!CDROM_CAN(CDC_PLAY_AUDIO))
2653 ret = cdi->ops->audio_ioctl(cdi, CDROMVOLREAD, &volume);
2657 if (copy_to_user(argp, &volume, sizeof(volume)))
2662 static int cdrom_ioctl_audioctl(struct cdrom_device_info *cdi,
2667 cdinfo(CD_DO_IOCTL, "doing audio ioctl (start/stop/pause/resume)\n");
2669 if (!CDROM_CAN(CDC_PLAY_AUDIO))
2671 ret = check_for_audio_disc(cdi, cdi->ops);
2674 return cdi->ops->audio_ioctl(cdi, cmd, NULL);
2678 * Just about every imaginable ioctl is supported in the Uniform layer
2680 * ATAPI / SCSI specific code now mainly resides in mmc_ioctl().
2682 int cdrom_ioctl(struct cdrom_device_info *cdi, struct block_device *bdev,
2683 fmode_t mode, unsigned int cmd, unsigned long arg)
2685 void __user *argp = (void __user *)arg;
2687 struct gendisk *disk = bdev->bd_disk;
2690 * Try the generic SCSI command ioctl's first.
2692 ret = scsi_cmd_ioctl(disk->queue, disk, mode, cmd, argp);
2697 case CDROMMULTISESSION:
2698 return cdrom_ioctl_multisession(cdi, argp);
2700 return cdrom_ioctl_eject(cdi);
2701 case CDROMCLOSETRAY:
2702 return cdrom_ioctl_closetray(cdi);
2704 return cdrom_ioctl_eject_sw(cdi, arg);
2705 case CDROM_MEDIA_CHANGED:
2706 return cdrom_ioctl_media_changed(cdi, arg);
2707 case CDROM_SET_OPTIONS:
2708 return cdrom_ioctl_set_options(cdi, arg);
2709 case CDROM_CLEAR_OPTIONS:
2710 return cdrom_ioctl_clear_options(cdi, arg);
2711 case CDROM_SELECT_SPEED:
2712 return cdrom_ioctl_select_speed(cdi, arg);
2713 case CDROM_SELECT_DISC:
2714 return cdrom_ioctl_select_disc(cdi, arg);
2716 return cdrom_ioctl_reset(cdi, bdev);
2717 case CDROM_LOCKDOOR:
2718 return cdrom_ioctl_lock_door(cdi, arg);
2720 return cdrom_ioctl_debug(cdi, arg);
2721 case CDROM_GET_CAPABILITY:
2722 return cdrom_ioctl_get_capability(cdi);
2724 return cdrom_ioctl_get_mcn(cdi, argp);
2725 case CDROM_DRIVE_STATUS:
2726 return cdrom_ioctl_drive_status(cdi, arg);
2727 case CDROM_DISC_STATUS:
2728 return cdrom_ioctl_disc_status(cdi);
2729 case CDROM_CHANGER_NSLOTS:
2730 return cdrom_ioctl_changer_nslots(cdi);
2734 * Use the ioctls that are implemented through the generic_packet()
2735 * interface. this may look at bit funny, but if -ENOTTY is
2736 * returned that particular ioctl is not implemented and we
2737 * let it go through the device specific ones.
2739 if (CDROM_CAN(CDC_GENERIC_PACKET)) {
2740 ret = mmc_ioctl(cdi, cmd, arg);
2746 * Note: most of the cdinfo() calls are commented out here,
2747 * because they fill up the sys log when CD players poll
2752 return cdrom_ioctl_get_subchnl(cdi, argp);
2753 case CDROMREADTOCHDR:
2754 return cdrom_ioctl_read_tochdr(cdi, argp);
2755 case CDROMREADTOCENTRY:
2756 return cdrom_ioctl_read_tocentry(cdi, argp);
2758 return cdrom_ioctl_play_msf(cdi, argp);
2759 case CDROMPLAYTRKIND:
2760 return cdrom_ioctl_play_trkind(cdi, argp);
2762 return cdrom_ioctl_volctrl(cdi, argp);
2764 return cdrom_ioctl_volread(cdi, argp);
2769 return cdrom_ioctl_audioctl(cdi, cmd);
2776 * Required when we need to use READ_10 to issue other than 2048 block
2779 static int cdrom_switch_blocksize(struct cdrom_device_info *cdi, int size)
2781 struct cdrom_device_ops *cdo = cdi->ops;
2782 struct packet_command cgc;
2783 struct modesel_head mh;
2785 memset(&mh, 0, sizeof(mh));
2786 mh.block_desc_length = 0x08;
2787 mh.block_length_med = (size >> 8) & 0xff;
2788 mh.block_length_lo = size & 0xff;
2790 memset(&cgc, 0, sizeof(cgc));
2792 cgc.cmd[1] = 1 << 4;
2794 cgc.buflen = sizeof(mh);
2795 cgc.buffer = (char *) &mh;
2796 cgc.data_direction = CGC_DATA_WRITE;
2797 mh.block_desc_length = 0x08;
2798 mh.block_length_med = (size >> 8) & 0xff;
2799 mh.block_length_lo = size & 0xff;
2801 return cdo->generic_packet(cdi, &cgc);
2804 static noinline int mmc_ioctl_cdrom_read_data(struct cdrom_device_info *cdi,
2806 struct packet_command *cgc,
2809 struct request_sense sense;
2810 struct cdrom_msf msf;
2811 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!! */
2832 cgc->buffer = kmalloc(blocksize, GFP_KERNEL);
2833 if (cgc->buffer == NULL)
2836 memset(&sense, 0, sizeof(sense));
2837 cgc->sense = &sense;
2838 cgc->data_direction = CGC_DATA_READ;
2839 ret = cdrom_read_block(cdi, cgc, lba, 1, format, blocksize);
2840 if (ret && sense.sense_key == 0x05 &&
2841 sense.asc == 0x20 &&
2842 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 ret = cdrom_switch_blocksize(cdi, blocksize);
2852 ret = cdrom_read_cd(cdi, cgc, lba, blocksize, 1);
2853 ret |= cdrom_switch_blocksize(cdi, blocksize);
2855 if (!ret && copy_to_user(arg, cgc->buffer, blocksize))
2862 static noinline int mmc_ioctl_cdrom_read_audio(struct cdrom_device_info *cdi,
2865 struct cdrom_read_audio ra;
2868 IOCTL_IN(arg, struct cdrom_read_audio, ra);
2870 if (ra.addr_format == CDROM_MSF)
2871 lba = msf_to_lba(ra.addr.msf.minute,
2874 else if (ra.addr_format == CDROM_LBA)
2879 /* FIXME: we need upper bound checking, too!! */
2880 if (lba < 0 || ra.nframes <= 0 || ra.nframes > CD_FRAMES)
2883 return cdrom_read_cdda(cdi, ra.buf, lba, ra.nframes);
2886 static noinline int mmc_ioctl_cdrom_subchannel(struct cdrom_device_info *cdi,
2890 struct cdrom_subchnl q;
2891 u_char requested, back;
2892 IOCTL_IN(arg, struct cdrom_subchnl, q);
2893 requested = q.cdsc_format;
2894 if (!((requested == CDROM_MSF) ||
2895 (requested == CDROM_LBA)))
2897 q.cdsc_format = CDROM_MSF;
2898 ret = cdrom_read_subchannel(cdi, &q, 0);
2901 back = q.cdsc_format; /* local copy */
2902 sanitize_format(&q.cdsc_absaddr, &back, requested);
2903 sanitize_format(&q.cdsc_reladdr, &q.cdsc_format, requested);
2904 IOCTL_OUT(arg, struct cdrom_subchnl, q);
2905 /* cdinfo(CD_DO_IOCTL, "CDROMSUBCHNL successful\n"); */
2909 static noinline int mmc_ioctl_cdrom_play_msf(struct cdrom_device_info *cdi,
2911 struct packet_command *cgc)
2913 struct cdrom_device_ops *cdo = cdi->ops;
2914 struct cdrom_msf msf;
2915 cdinfo(CD_DO_IOCTL, "entering CDROMPLAYMSF\n");
2916 IOCTL_IN(arg, struct cdrom_msf, msf);
2917 cgc->cmd[0] = GPCMD_PLAY_AUDIO_MSF;
2918 cgc->cmd[3] = msf.cdmsf_min0;
2919 cgc->cmd[4] = msf.cdmsf_sec0;
2920 cgc->cmd[5] = msf.cdmsf_frame0;
2921 cgc->cmd[6] = msf.cdmsf_min1;
2922 cgc->cmd[7] = msf.cdmsf_sec1;
2923 cgc->cmd[8] = msf.cdmsf_frame1;
2924 cgc->data_direction = CGC_DATA_NONE;
2925 return cdo->generic_packet(cdi, cgc);
2928 static noinline int mmc_ioctl_cdrom_play_blk(struct cdrom_device_info *cdi,
2930 struct packet_command *cgc)
2932 struct cdrom_device_ops *cdo = cdi->ops;
2933 struct cdrom_blk blk;
2934 cdinfo(CD_DO_IOCTL, "entering CDROMPLAYBLK\n");
2935 IOCTL_IN(arg, struct cdrom_blk, blk);
2936 cgc->cmd[0] = GPCMD_PLAY_AUDIO_10;
2937 cgc->cmd[2] = (blk.from >> 24) & 0xff;
2938 cgc->cmd[3] = (blk.from >> 16) & 0xff;
2939 cgc->cmd[4] = (blk.from >> 8) & 0xff;
2940 cgc->cmd[5] = blk.from & 0xff;
2941 cgc->cmd[7] = (blk.len >> 8) & 0xff;
2942 cgc->cmd[8] = blk.len & 0xff;
2943 cgc->data_direction = CGC_DATA_NONE;
2944 return cdo->generic_packet(cdi, cgc);
2947 static noinline int mmc_ioctl_cdrom_volume(struct cdrom_device_info *cdi,
2949 struct packet_command *cgc,
2952 struct cdrom_volctrl volctrl;
2953 unsigned char buffer[32];
2954 char mask[sizeof(buffer)];
2955 unsigned short offset;
2958 cdinfo(CD_DO_IOCTL, "entering CDROMVOLUME\n");
2960 IOCTL_IN(arg, struct cdrom_volctrl, volctrl);
2962 cgc->buffer = buffer;
2964 ret = cdrom_mode_sense(cdi, cgc, GPMODE_AUDIO_CTL_PAGE, 0);
2968 /* originally the code depended on buffer[1] to determine
2969 how much data is available for transfer. buffer[1] is
2970 unfortunately ambigious and the only reliable way seem
2971 to be to simply skip over the block descriptor... */
2972 offset = 8 + be16_to_cpu(*(__be16 *)(buffer + 6));
2974 if (offset + 16 > sizeof(buffer))
2977 if (offset + 16 > cgc->buflen) {
2978 cgc->buflen = offset + 16;
2979 ret = cdrom_mode_sense(cdi, cgc,
2980 GPMODE_AUDIO_CTL_PAGE, 0);
2986 if ((buffer[offset] & 0x3f) != GPMODE_AUDIO_CTL_PAGE ||
2987 buffer[offset + 1] < 14)
2990 /* now we have the current volume settings. if it was only
2991 a CDROMVOLREAD, return these values */
2992 if (cmd == CDROMVOLREAD) {
2993 volctrl.channel0 = buffer[offset+9];
2994 volctrl.channel1 = buffer[offset+11];
2995 volctrl.channel2 = buffer[offset+13];
2996 volctrl.channel3 = buffer[offset+15];
2997 IOCTL_OUT(arg, struct cdrom_volctrl, volctrl);
3001 /* get the volume mask */
3003 ret = cdrom_mode_sense(cdi, cgc, GPMODE_AUDIO_CTL_PAGE, 1);
3007 buffer[offset + 9] = volctrl.channel0 & mask[offset + 9];
3008 buffer[offset + 11] = volctrl.channel1 & mask[offset + 11];
3009 buffer[offset + 13] = volctrl.channel2 & mask[offset + 13];
3010 buffer[offset + 15] = volctrl.channel3 & mask[offset + 15];
3013 cgc->buffer = buffer + offset - 8;
3014 memset(cgc->buffer, 0, 8);
3015 return cdrom_mode_select(cdi, cgc);
3018 static noinline int mmc_ioctl_cdrom_start_stop(struct cdrom_device_info *cdi,
3019 struct packet_command *cgc,
3022 struct cdrom_device_ops *cdo = cdi->ops;
3023 cdinfo(CD_DO_IOCTL, "entering CDROMSTART/CDROMSTOP\n");
3024 cgc->cmd[0] = GPCMD_START_STOP_UNIT;
3026 cgc->cmd[4] = (cmd == CDROMSTART) ? 1 : 0;
3027 cgc->data_direction = CGC_DATA_NONE;
3028 return cdo->generic_packet(cdi, cgc);
3031 static noinline int mmc_ioctl_cdrom_pause_resume(struct cdrom_device_info *cdi,
3032 struct packet_command *cgc,
3035 struct cdrom_device_ops *cdo = cdi->ops;
3036 cdinfo(CD_DO_IOCTL, "entering CDROMPAUSE/CDROMRESUME\n");
3037 cgc->cmd[0] = GPCMD_PAUSE_RESUME;
3038 cgc->cmd[8] = (cmd == CDROMRESUME) ? 1 : 0;
3039 cgc->data_direction = CGC_DATA_NONE;
3040 return cdo->generic_packet(cdi, cgc);
3043 static noinline int mmc_ioctl_dvd_read_struct(struct cdrom_device_info *cdi,
3045 struct packet_command *cgc)
3049 int size = sizeof(dvd_struct);
3051 if (!CDROM_CAN(CDC_DVD))
3054 s = kmalloc(size, GFP_KERNEL);
3058 cdinfo(CD_DO_IOCTL, "entering DVD_READ_STRUCT\n");
3059 if (copy_from_user(s, arg, size)) {
3064 ret = dvd_read_struct(cdi, s, cgc);
3068 if (copy_to_user(arg, s, size))
3075 static noinline int mmc_ioctl_dvd_auth(struct cdrom_device_info *cdi,
3080 if (!CDROM_CAN(CDC_DVD))
3082 cdinfo(CD_DO_IOCTL, "entering DVD_AUTH\n");
3083 IOCTL_IN(arg, dvd_authinfo, ai);
3084 ret = dvd_do_auth(cdi, &ai);
3087 IOCTL_OUT(arg, dvd_authinfo, ai);
3091 static noinline int mmc_ioctl_cdrom_next_writable(struct cdrom_device_info *cdi,
3096 cdinfo(CD_DO_IOCTL, "entering CDROM_NEXT_WRITABLE\n");
3097 ret = cdrom_get_next_writable(cdi, &next);
3100 IOCTL_OUT(arg, long, next);
3104 static noinline int mmc_ioctl_cdrom_last_written(struct cdrom_device_info *cdi,
3109 cdinfo(CD_DO_IOCTL, "entering CDROM_LAST_WRITTEN\n");
3110 ret = cdrom_get_last_written(cdi, &last);
3113 IOCTL_OUT(arg, long, last);
3117 static int mmc_ioctl(struct cdrom_device_info *cdi, unsigned int cmd,
3120 struct packet_command cgc;
3121 void __user *userptr = (void __user *)arg;
3123 memset(&cgc, 0, sizeof(cgc));
3125 /* build a unified command and queue it through
3126 cdo->generic_packet() */
3129 case CDROMREADMODE1:
3130 case CDROMREADMODE2:
3131 return mmc_ioctl_cdrom_read_data(cdi, userptr, &cgc, cmd);
3132 case CDROMREADAUDIO:
3133 return mmc_ioctl_cdrom_read_audio(cdi, userptr);
3135 return mmc_ioctl_cdrom_subchannel(cdi, userptr);
3137 return mmc_ioctl_cdrom_play_msf(cdi, userptr, &cgc);
3139 return mmc_ioctl_cdrom_play_blk(cdi, userptr, &cgc);
3142 return mmc_ioctl_cdrom_volume(cdi, userptr, &cgc, cmd);
3145 return mmc_ioctl_cdrom_start_stop(cdi, &cgc, cmd);
3148 return mmc_ioctl_cdrom_pause_resume(cdi, &cgc, cmd);
3149 case DVD_READ_STRUCT:
3150 return mmc_ioctl_dvd_read_struct(cdi, userptr, &cgc);
3152 return mmc_ioctl_dvd_auth(cdi, userptr);
3153 case CDROM_NEXT_WRITABLE:
3154 return mmc_ioctl_cdrom_next_writable(cdi, userptr);
3155 case CDROM_LAST_WRITTEN:
3156 return mmc_ioctl_cdrom_last_written(cdi, userptr);
3162 static int cdrom_get_track_info(struct cdrom_device_info *cdi, __u16 track, __u8 type,
3163 track_information *ti)
3165 struct cdrom_device_ops *cdo = cdi->ops;
3166 struct packet_command cgc;
3169 init_cdrom_command(&cgc, ti, 8, CGC_DATA_READ);
3170 cgc.cmd[0] = GPCMD_READ_TRACK_RZONE_INFO;
3171 cgc.cmd[1] = type & 3;
3172 cgc.cmd[4] = (track & 0xff00) >> 8;
3173 cgc.cmd[5] = track & 0xff;
3177 if ((ret = cdo->generic_packet(cdi, &cgc)))
3180 buflen = be16_to_cpu(ti->track_information_length) +
3181 sizeof(ti->track_information_length);
3183 if (buflen > sizeof(track_information))
3184 buflen = sizeof(track_information);
3186 cgc.cmd[8] = cgc.buflen = buflen;
3187 if ((ret = cdo->generic_packet(cdi, &cgc)))
3190 /* return actual fill size */
3194 /* requires CD R/RW */
3195 static int cdrom_get_disc_info(struct cdrom_device_info *cdi, disc_information *di)
3197 struct cdrom_device_ops *cdo = cdi->ops;
3198 struct packet_command cgc;
3201 /* set up command and get the disc info */
3202 init_cdrom_command(&cgc, di, sizeof(*di), CGC_DATA_READ);
3203 cgc.cmd[0] = GPCMD_READ_DISC_INFO;
3204 cgc.cmd[8] = cgc.buflen = 2;
3207 if ((ret = cdo->generic_packet(cdi, &cgc)))
3210 /* not all drives have the same disc_info length, so requeue
3211 * packet with the length the drive tells us it can supply
3213 buflen = be16_to_cpu(di->disc_information_length) +
3214 sizeof(di->disc_information_length);
3216 if (buflen > sizeof(disc_information))
3217 buflen = sizeof(disc_information);
3219 cgc.cmd[8] = cgc.buflen = buflen;
3220 if ((ret = cdo->generic_packet(cdi, &cgc)))
3223 /* return actual fill size */
3227 /* return the last written block on the CD-R media. this is for the udf
3229 int cdrom_get_last_written(struct cdrom_device_info *cdi, long *last_written)
3231 struct cdrom_tocentry toc;
3232 disc_information di;
3233 track_information ti;
3235 int ret = -1, ti_size;
3237 if (!CDROM_CAN(CDC_GENERIC_PACKET))
3240 ret = cdrom_get_disc_info(cdi, &di);
3241 if (ret < (int)(offsetof(typeof(di), last_track_lsb)
3242 + sizeof(di.last_track_lsb)))
3245 /* if unit didn't return msb, it's zeroed by cdrom_get_disc_info */
3246 last_track = (di.last_track_msb << 8) | di.last_track_lsb;
3247 ti_size = cdrom_get_track_info(cdi, last_track, 1, &ti);
3248 if (ti_size < (int)offsetof(typeof(ti), track_start))
3251 /* if this track is blank, try the previous. */
3256 ti_size = cdrom_get_track_info(cdi, last_track, 1, &ti);
3259 if (ti_size < (int)(offsetof(typeof(ti), track_size)
3260 + sizeof(ti.track_size)))
3263 /* if last recorded field is valid, return it. */
3264 if (ti.lra_v && ti_size >= (int)(offsetof(typeof(ti), last_rec_address)
3265 + sizeof(ti.last_rec_address))) {
3266 *last_written = be32_to_cpu(ti.last_rec_address);
3268 /* make it up instead */
3269 *last_written = be32_to_cpu(ti.track_start) +
3270 be32_to_cpu(ti.track_size);
3272 *last_written -= (be32_to_cpu(ti.free_blocks) + 7);
3276 /* this is where we end up if the drive either can't do a
3277 GPCMD_READ_DISC_INFO or GPCMD_READ_TRACK_RZONE_INFO or if
3278 it doesn't give enough information or fails. then we return
3279 the toc contents. */
3281 toc.cdte_format = CDROM_MSF;
3282 toc.cdte_track = CDROM_LEADOUT;
3283 if ((ret = cdi->ops->audio_ioctl(cdi, CDROMREADTOCENTRY, &toc)))
3285 sanitize_format(&toc.cdte_addr, &toc.cdte_format, CDROM_LBA);
3286 *last_written = toc.cdte_addr.lba;
3290 /* return the next writable block. also for udf file system. */
3291 static int cdrom_get_next_writable(struct cdrom_device_info *cdi, long *next_writable)
3293 disc_information di;
3294 track_information ti;
3298 if (!CDROM_CAN(CDC_GENERIC_PACKET))
3299 goto use_last_written;
3301 ret = cdrom_get_disc_info(cdi, &di);
3302 if (ret < 0 || ret < offsetof(typeof(di), last_track_lsb)
3303 + sizeof(di.last_track_lsb))
3304 goto use_last_written;
3306 /* if unit didn't return msb, it's zeroed by cdrom_get_disc_info */
3307 last_track = (di.last_track_msb << 8) | di.last_track_lsb;
3308 ti_size = cdrom_get_track_info(cdi, last_track, 1, &ti);
3309 if (ti_size < 0 || ti_size < offsetof(typeof(ti), track_start))
3310 goto use_last_written;
3312 /* if this track is blank, try the previous. */
3314 if (last_track == 1)
3315 goto use_last_written;
3317 ti_size = cdrom_get_track_info(cdi, last_track, 1, &ti);
3319 goto use_last_written;
3322 /* if next recordable address field is valid, use it. */
3323 if (ti.nwa_v && ti_size >= offsetof(typeof(ti), next_writable)
3324 + sizeof(ti.next_writable)) {
3325 *next_writable = be32_to_cpu(ti.next_writable);
3330 if ((ret = cdrom_get_last_written(cdi, next_writable))) {
3334 *next_writable += 7;
3339 EXPORT_SYMBOL(cdrom_get_last_written);
3340 EXPORT_SYMBOL(register_cdrom);
3341 EXPORT_SYMBOL(unregister_cdrom);
3342 EXPORT_SYMBOL(cdrom_open);
3343 EXPORT_SYMBOL(cdrom_release);
3344 EXPORT_SYMBOL(cdrom_ioctl);
3345 EXPORT_SYMBOL(cdrom_media_changed);
3346 EXPORT_SYMBOL(cdrom_number_of_slots);
3347 EXPORT_SYMBOL(cdrom_mode_select);
3348 EXPORT_SYMBOL(cdrom_mode_sense);
3349 EXPORT_SYMBOL(init_cdrom_command);
3350 EXPORT_SYMBOL(cdrom_get_media_event);
3352 #ifdef CONFIG_SYSCTL
3354 #define CDROM_STR_SIZE 1000
3356 static struct cdrom_sysctl_settings {
3357 char info[CDROM_STR_SIZE]; /* general info */
3358 int autoclose; /* close tray upon mount, etc */
3359 int autoeject; /* eject on umount */
3360 int debug; /* turn on debugging messages */
3361 int lock; /* lock the door on device open */
3362 int check; /* check media type */
3363 } cdrom_sysctl_settings;
3365 enum cdrom_print_option {
3372 static int cdrom_print_info(const char *header, int val, char *info,
3373 int *pos, enum cdrom_print_option option)
3375 const int max_size = sizeof(cdrom_sysctl_settings.info);
3376 struct cdrom_device_info *cdi;
3379 ret = scnprintf(info + *pos, max_size - *pos, header);
3385 list_for_each_entry(cdi, &cdrom_list, list) {
3388 ret = scnprintf(info + *pos, max_size - *pos,
3392 ret = scnprintf(info + *pos, max_size - *pos,
3393 "\t%d", cdi->speed);
3396 ret = scnprintf(info + *pos, max_size - *pos,
3397 "\t%d", cdi->capacity);
3399 case CTL_CAPABILITY:
3400 ret = scnprintf(info + *pos, max_size - *pos,
3401 "\t%d", CDROM_CAN(val) != 0);
3404 printk(KERN_INFO "cdrom: invalid option%d\n", option);
3415 static int cdrom_sysctl_info(ctl_table *ctl, int write, struct file * filp,
3416 void __user *buffer, size_t *lenp, loff_t *ppos)
3419 char *info = cdrom_sysctl_settings.info;
3420 const int max_size = sizeof(cdrom_sysctl_settings.info);
3422 if (!*lenp || (*ppos && !write)) {
3427 mutex_lock(&cdrom_mutex);
3429 pos = sprintf(info, "CD-ROM information, " VERSION "\n");
3431 if (cdrom_print_info("\ndrive name:\t", 0, info, &pos, CTL_NAME))
3433 if (cdrom_print_info("\ndrive speed:\t", 0, info, &pos, CTL_SPEED))
3435 if (cdrom_print_info("\ndrive # of slots:", 0, info, &pos, CTL_SLOTS))
3437 if (cdrom_print_info("\nCan close tray:\t",
3438 CDC_CLOSE_TRAY, info, &pos, CTL_CAPABILITY))
3440 if (cdrom_print_info("\nCan open tray:\t",
3441 CDC_OPEN_TRAY, info, &pos, CTL_CAPABILITY))
3443 if (cdrom_print_info("\nCan lock tray:\t",
3444 CDC_LOCK, info, &pos, CTL_CAPABILITY))
3446 if (cdrom_print_info("\nCan change speed:",
3447 CDC_SELECT_SPEED, info, &pos, CTL_CAPABILITY))
3449 if (cdrom_print_info("\nCan select disk:",
3450 CDC_SELECT_DISC, info, &pos, CTL_CAPABILITY))
3452 if (cdrom_print_info("\nCan read multisession:",
3453 CDC_MULTI_SESSION, info, &pos, CTL_CAPABILITY))
3455 if (cdrom_print_info("\nCan read MCN:\t",
3456 CDC_MCN, info, &pos, CTL_CAPABILITY))
3458 if (cdrom_print_info("\nReports media changed:",
3459 CDC_MEDIA_CHANGED, info, &pos, CTL_CAPABILITY))
3461 if (cdrom_print_info("\nCan play audio:\t",
3462 CDC_PLAY_AUDIO, info, &pos, CTL_CAPABILITY))
3464 if (cdrom_print_info("\nCan write CD-R:\t",
3465 CDC_CD_R, info, &pos, CTL_CAPABILITY))
3467 if (cdrom_print_info("\nCan write CD-RW:",
3468 CDC_CD_RW, info, &pos, CTL_CAPABILITY))
3470 if (cdrom_print_info("\nCan read DVD:\t",
3471 CDC_DVD, info, &pos, CTL_CAPABILITY))
3473 if (cdrom_print_info("\nCan write DVD-R:",
3474 CDC_DVD_R, info, &pos, CTL_CAPABILITY))
3476 if (cdrom_print_info("\nCan write DVD-RAM:",
3477 CDC_DVD_RAM, info, &pos, CTL_CAPABILITY))
3479 if (cdrom_print_info("\nCan read MRW:\t",
3480 CDC_MRW, info, &pos, CTL_CAPABILITY))
3482 if (cdrom_print_info("\nCan write MRW:\t",
3483 CDC_MRW_W, info, &pos, CTL_CAPABILITY))
3485 if (cdrom_print_info("\nCan write RAM:\t",
3486 CDC_RAM, info, &pos, CTL_CAPABILITY))
3488 if (!scnprintf(info + pos, max_size - pos, "\n\n"))
3491 mutex_unlock(&cdrom_mutex);
3492 return proc_dostring(ctl, write, filp, buffer, lenp, ppos);
3494 printk(KERN_INFO "cdrom: info buffer too small\n");
3498 /* Unfortunately, per device settings are not implemented through
3499 procfs/sysctl yet. When they are, this will naturally disappear. For now
3500 just update all drives. Later this will become the template on which
3501 new registered drives will be based. */
3502 static void cdrom_update_settings(void)
3504 struct cdrom_device_info *cdi;
3506 mutex_lock(&cdrom_mutex);
3507 list_for_each_entry(cdi, &cdrom_list, list) {
3508 if (autoclose && CDROM_CAN(CDC_CLOSE_TRAY))
3509 cdi->options |= CDO_AUTO_CLOSE;
3510 else if (!autoclose)
3511 cdi->options &= ~CDO_AUTO_CLOSE;
3512 if (autoeject && CDROM_CAN(CDC_OPEN_TRAY))
3513 cdi->options |= CDO_AUTO_EJECT;
3514 else if (!autoeject)
3515 cdi->options &= ~CDO_AUTO_EJECT;
3516 if (lockdoor && CDROM_CAN(CDC_LOCK))
3517 cdi->options |= CDO_LOCK;
3519 cdi->options &= ~CDO_LOCK;
3520 if (check_media_type)
3521 cdi->options |= CDO_CHECK_TYPE;
3523 cdi->options &= ~CDO_CHECK_TYPE;
3525 mutex_unlock(&cdrom_mutex);
3528 static int cdrom_sysctl_handler(ctl_table *ctl, int write, struct file * filp,
3529 void __user *buffer, size_t *lenp, loff_t *ppos)
3533 ret = proc_dointvec(ctl, write, filp, buffer, lenp, ppos);
3537 /* we only care for 1 or 0. */
3538 autoclose = !!cdrom_sysctl_settings.autoclose;
3539 autoeject = !!cdrom_sysctl_settings.autoeject;
3540 debug = !!cdrom_sysctl_settings.debug;
3541 lockdoor = !!cdrom_sysctl_settings.lock;
3542 check_media_type = !!cdrom_sysctl_settings.check;
3544 /* update the option flags according to the changes. we
3545 don't have per device options through sysctl yet,
3546 but we will have and then this will disappear. */
3547 cdrom_update_settings();
3553 /* Place files in /proc/sys/dev/cdrom */
3554 static ctl_table cdrom_table[] = {
3557 .data = &cdrom_sysctl_settings.info,
3558 .maxlen = CDROM_STR_SIZE,
3560 .proc_handler = &cdrom_sysctl_info,
3563 .procname = "autoclose",
3564 .data = &cdrom_sysctl_settings.autoclose,
3565 .maxlen = sizeof(int),
3567 .proc_handler = &cdrom_sysctl_handler,
3570 .procname = "autoeject",
3571 .data = &cdrom_sysctl_settings.autoeject,
3572 .maxlen = sizeof(int),
3574 .proc_handler = &cdrom_sysctl_handler,
3577 .procname = "debug",
3578 .data = &cdrom_sysctl_settings.debug,
3579 .maxlen = sizeof(int),
3581 .proc_handler = &cdrom_sysctl_handler,
3585 .data = &cdrom_sysctl_settings.lock,
3586 .maxlen = sizeof(int),
3588 .proc_handler = &cdrom_sysctl_handler,
3591 .procname = "check_media",
3592 .data = &cdrom_sysctl_settings.check,
3593 .maxlen = sizeof(int),
3595 .proc_handler = &cdrom_sysctl_handler
3600 static ctl_table cdrom_cdrom_table[] = {
3602 .ctl_name = DEV_CDROM,
3603 .procname = "cdrom",
3606 .child = cdrom_table,
3611 /* Make sure that /proc/sys/dev is there */
3612 static ctl_table cdrom_root_table[] = {
3614 .ctl_name = CTL_DEV,
3618 .child = cdrom_cdrom_table,
3622 static struct ctl_table_header *cdrom_sysctl_header;
3624 static void cdrom_sysctl_register(void)
3626 static int initialized;
3628 if (initialized == 1)
3631 cdrom_sysctl_header = register_sysctl_table(cdrom_root_table);
3633 /* set the defaults */
3634 cdrom_sysctl_settings.autoclose = autoclose;
3635 cdrom_sysctl_settings.autoeject = autoeject;
3636 cdrom_sysctl_settings.debug = debug;
3637 cdrom_sysctl_settings.lock = lockdoor;
3638 cdrom_sysctl_settings.check = check_media_type;
3643 static void cdrom_sysctl_unregister(void)
3645 if (cdrom_sysctl_header)
3646 unregister_sysctl_table(cdrom_sysctl_header);
3649 #else /* CONFIG_SYSCTL */
3651 static void cdrom_sysctl_register(void)
3655 static void cdrom_sysctl_unregister(void)
3659 #endif /* CONFIG_SYSCTL */
3661 static int __init cdrom_init(void)
3663 cdrom_sysctl_register();
3668 static void __exit cdrom_exit(void)
3670 printk(KERN_INFO "Uniform CD-ROM driver unloaded\n");
3671 cdrom_sysctl_unregister();
3674 module_init(cdrom_init);
3675 module_exit(cdrom_exit);
3676 MODULE_LICENSE("GPL");
projects / linux-2.6 / blob