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 inode *ip, struct file *fp)
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 ((fp->f_flags & O_NONBLOCK) && (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 (fp->f_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(ip->i_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 int cdrom_release(struct cdrom_device_info *cdi, struct file *fp)
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 !(fp && fp->f_flags & O_NONBLOCK);
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);
1225 static int cdrom_read_mech_status(struct cdrom_device_info *cdi,
1226 struct cdrom_changer_info *buf)
1228 struct packet_command cgc;
1229 struct cdrom_device_ops *cdo = cdi->ops;
1233 * Sanyo changer isn't spec compliant (doesn't use regular change
1234 * LOAD_UNLOAD command, and it doesn't implement the mech status
1237 if (cdi->sanyo_slot) {
1238 buf->hdr.nslots = 3;
1239 buf->hdr.curslot = cdi->sanyo_slot == 3 ? 0 : cdi->sanyo_slot;
1240 for (length = 0; length < 3; length++) {
1241 buf->slots[length].disc_present = 1;
1242 buf->slots[length].change = 0;
1247 length = sizeof(struct cdrom_mechstat_header) +
1248 cdi->capacity * sizeof(struct cdrom_slot);
1250 init_cdrom_command(&cgc, buf, length, CGC_DATA_READ);
1251 cgc.cmd[0] = GPCMD_MECHANISM_STATUS;
1252 cgc.cmd[8] = (length >> 8) & 0xff;
1253 cgc.cmd[9] = length & 0xff;
1254 return cdo->generic_packet(cdi, &cgc);
1257 static int cdrom_slot_status(struct cdrom_device_info *cdi, int slot)
1259 struct cdrom_changer_info *info;
1262 cdinfo(CD_CHANGER, "entering cdrom_slot_status()\n");
1263 if (cdi->sanyo_slot)
1266 info = kmalloc(sizeof(*info), GFP_KERNEL);
1270 if ((ret = cdrom_read_mech_status(cdi, info)))
1273 if (info->slots[slot].disc_present)
1283 /* Return the number of slots for an ATAPI/SCSI cdrom,
1284 * return 1 if not a changer.
1286 int cdrom_number_of_slots(struct cdrom_device_info *cdi)
1290 struct cdrom_changer_info *info;
1292 cdinfo(CD_CHANGER, "entering cdrom_number_of_slots()\n");
1293 /* cdrom_read_mech_status requires a valid value for capacity: */
1296 info = kmalloc(sizeof(*info), GFP_KERNEL);
1300 if ((status = cdrom_read_mech_status(cdi, info)) == 0)
1301 nslots = info->hdr.nslots;
1308 /* If SLOT < 0, unload the current slot. Otherwise, try to load SLOT. */
1309 static int cdrom_load_unload(struct cdrom_device_info *cdi, int slot)
1311 struct packet_command cgc;
1313 cdinfo(CD_CHANGER, "entering cdrom_load_unload()\n");
1314 if (cdi->sanyo_slot && slot < 0)
1317 init_cdrom_command(&cgc, NULL, 0, CGC_DATA_NONE);
1318 cgc.cmd[0] = GPCMD_LOAD_UNLOAD;
1319 cgc.cmd[4] = 2 + (slot >= 0);
1321 cgc.timeout = 60 * HZ;
1323 /* The Sanyo 3 CD changer uses byte 7 of the
1324 GPCMD_TEST_UNIT_READY to command to switch CDs instead of
1325 using the GPCMD_LOAD_UNLOAD opcode. */
1326 if (cdi->sanyo_slot && -1 < slot) {
1327 cgc.cmd[0] = GPCMD_TEST_UNIT_READY;
1329 cgc.cmd[4] = cgc.cmd[8] = 0;
1330 cdi->sanyo_slot = slot ? slot : 3;
1333 return cdi->ops->generic_packet(cdi, &cgc);
1336 static int cdrom_select_disc(struct cdrom_device_info *cdi, int slot)
1338 struct cdrom_changer_info *info;
1342 cdinfo(CD_CHANGER, "entering cdrom_select_disc()\n");
1343 if (!CDROM_CAN(CDC_SELECT_DISC))
1344 return -EDRIVE_CANT_DO_THIS;
1346 (void) cdi->ops->media_changed(cdi, slot);
1348 if (slot == CDSL_NONE) {
1349 /* set media changed bits, on both queues */
1350 cdi->mc_flags = 0x3;
1351 return cdrom_load_unload(cdi, -1);
1354 info = kmalloc(sizeof(*info), GFP_KERNEL);
1358 if ((ret = cdrom_read_mech_status(cdi, info))) {
1363 curslot = info->hdr.curslot;
1366 if (cdi->use_count > 1 || keeplocked) {
1367 if (slot == CDSL_CURRENT) {
1374 /* Specifying CDSL_CURRENT will attempt to load the currnet slot,
1375 which is useful if it had been previously unloaded.
1376 Whether it can or not, it returns the current slot.
1377 Similarly, if slot happens to be the current one, we still
1379 if (slot == CDSL_CURRENT)
1382 /* set media changed bits on both queues */
1383 cdi->mc_flags = 0x3;
1384 if ((ret = cdrom_load_unload(cdi, slot)))
1390 /* We want to make media_changed accessible to the user through an
1391 * ioctl. The main problem now is that we must double-buffer the
1392 * low-level implementation, to assure that the VFS and the user both
1393 * see a medium change once.
1397 int media_changed(struct cdrom_device_info *cdi, int queue)
1399 unsigned int mask = (1 << (queue & 1));
1400 int ret = !!(cdi->mc_flags & mask);
1402 if (!CDROM_CAN(CDC_MEDIA_CHANGED))
1404 /* changed since last call? */
1405 if (cdi->ops->media_changed(cdi, CDSL_CURRENT)) {
1406 cdi->mc_flags = 0x3; /* set bit on both queues */
1408 cdi->media_written = 0;
1410 cdi->mc_flags &= ~mask; /* clear bit */
1414 int cdrom_media_changed(struct cdrom_device_info *cdi)
1416 /* This talks to the VFS, which doesn't like errors - just 1 or 0.
1417 * Returning "0" is always safe (media hasn't been changed). Do that
1418 * if the low-level cdrom driver dosn't support media changed. */
1419 if (cdi == NULL || cdi->ops->media_changed == NULL)
1421 if (!CDROM_CAN(CDC_MEDIA_CHANGED))
1423 return media_changed(cdi, 0);
1426 /* badly broken, I know. Is due for a fixup anytime. */
1427 static void cdrom_count_tracks(struct cdrom_device_info *cdi, tracktype* tracks)
1429 struct cdrom_tochdr header;
1430 struct cdrom_tocentry entry;
1437 cdinfo(CD_COUNT_TRACKS, "entering cdrom_count_tracks\n");
1438 /* Grab the TOC header so we can see how many tracks there are */
1439 if ((ret = cdi->ops->audio_ioctl(cdi, CDROMREADTOCHDR, &header))) {
1440 if (ret == -ENOMEDIUM)
1441 tracks->error = CDS_NO_DISC;
1443 tracks->error = CDS_NO_INFO;
1446 /* check what type of tracks are on this disc */
1447 entry.cdte_format = CDROM_MSF;
1448 for (i = header.cdth_trk0; i <= header.cdth_trk1; i++) {
1449 entry.cdte_track = i;
1450 if (cdi->ops->audio_ioctl(cdi, CDROMREADTOCENTRY, &entry)) {
1451 tracks->error=CDS_NO_INFO;
1454 if (entry.cdte_ctrl & CDROM_DATA_TRACK) {
1455 if (entry.cdte_format == 0x10)
1457 else if (entry.cdte_format == 0x20)
1463 cdinfo(CD_COUNT_TRACKS, "track %d: format=%d, ctrl=%d\n",
1464 i, entry.cdte_format, entry.cdte_ctrl);
1466 cdinfo(CD_COUNT_TRACKS, "disc has %d tracks: %d=audio %d=data %d=Cd-I %d=XA\n",
1467 header.cdth_trk1, tracks->audio, tracks->data,
1468 tracks->cdi, tracks->xa);
1471 /* Requests to the low-level drivers will /always/ be done in the
1472 following format convention:
1474 CDROM_LBA: all data-related requests.
1475 CDROM_MSF: all audio-related requests.
1477 However, a low-level implementation is allowed to refuse this
1478 request, and return information in its own favorite format.
1480 It doesn't make sense /at all/ to ask for a play_audio in LBA
1481 format, or ask for multi-session info in MSF format. However, for
1482 backward compatibility these format requests will be satisfied, but
1483 the requests to the low-level drivers will be sanitized in the more
1484 meaningful format indicated above.
1488 void sanitize_format(union cdrom_addr *addr,
1489 u_char * curr, u_char requested)
1491 if (*curr == requested)
1492 return; /* nothing to be done! */
1493 if (requested == CDROM_LBA) {
1494 addr->lba = (int) addr->msf.frame +
1495 75 * (addr->msf.second - 2 + 60 * addr->msf.minute);
1496 } else { /* CDROM_MSF */
1497 int lba = addr->lba;
1498 addr->msf.frame = lba % 75;
1501 addr->msf.second = lba % 60;
1502 addr->msf.minute = lba / 60;
1507 void init_cdrom_command(struct packet_command *cgc, void *buf, int len,
1510 memset(cgc, 0, sizeof(struct packet_command));
1512 memset(buf, 0, len);
1513 cgc->buffer = (char *) buf;
1515 cgc->data_direction = type;
1516 cgc->timeout = CDROM_DEF_TIMEOUT;
1521 #define copy_key(dest,src) memcpy((dest), (src), sizeof(dvd_key))
1522 #define copy_chal(dest,src) memcpy((dest), (src), sizeof(dvd_challenge))
1524 static void setup_report_key(struct packet_command *cgc, unsigned agid, unsigned type)
1526 cgc->cmd[0] = GPCMD_REPORT_KEY;
1527 cgc->cmd[10] = type | (agid << 6);
1529 case 0: case 8: case 5: {
1542 cgc->cmd[9] = cgc->buflen;
1543 cgc->data_direction = CGC_DATA_READ;
1546 static void setup_send_key(struct packet_command *cgc, unsigned agid, unsigned type)
1548 cgc->cmd[0] = GPCMD_SEND_KEY;
1549 cgc->cmd[10] = type | (agid << 6);
1564 cgc->cmd[9] = cgc->buflen;
1565 cgc->data_direction = CGC_DATA_WRITE;
1568 static int dvd_do_auth(struct cdrom_device_info *cdi, dvd_authinfo *ai)
1572 struct packet_command cgc;
1573 struct cdrom_device_ops *cdo = cdi->ops;
1574 rpc_state_t rpc_state;
1576 memset(buf, 0, sizeof(buf));
1577 init_cdrom_command(&cgc, buf, 0, CGC_DATA_READ);
1581 case DVD_LU_SEND_AGID:
1582 cdinfo(CD_DVD, "entering DVD_LU_SEND_AGID\n");
1584 setup_report_key(&cgc, ai->lsa.agid, 0);
1586 if ((ret = cdo->generic_packet(cdi, &cgc)))
1589 ai->lsa.agid = buf[7] >> 6;
1590 /* Returning data, let host change state */
1593 case DVD_LU_SEND_KEY1:
1594 cdinfo(CD_DVD, "entering DVD_LU_SEND_KEY1\n");
1595 setup_report_key(&cgc, ai->lsk.agid, 2);
1597 if ((ret = cdo->generic_packet(cdi, &cgc)))
1600 copy_key(ai->lsk.key, &buf[4]);
1601 /* Returning data, let host change state */
1604 case DVD_LU_SEND_CHALLENGE:
1605 cdinfo(CD_DVD, "entering DVD_LU_SEND_CHALLENGE\n");
1606 setup_report_key(&cgc, ai->lsc.agid, 1);
1608 if ((ret = cdo->generic_packet(cdi, &cgc)))
1611 copy_chal(ai->lsc.chal, &buf[4]);
1612 /* Returning data, let host change state */
1616 case DVD_LU_SEND_TITLE_KEY:
1617 cdinfo(CD_DVD, "entering DVD_LU_SEND_TITLE_KEY\n");
1619 setup_report_key(&cgc, ai->lstk.agid, 4);
1620 cgc.cmd[5] = ai->lstk.lba;
1621 cgc.cmd[4] = ai->lstk.lba >> 8;
1622 cgc.cmd[3] = ai->lstk.lba >> 16;
1623 cgc.cmd[2] = ai->lstk.lba >> 24;
1625 if ((ret = cdo->generic_packet(cdi, &cgc)))
1628 ai->lstk.cpm = (buf[4] >> 7) & 1;
1629 ai->lstk.cp_sec = (buf[4] >> 6) & 1;
1630 ai->lstk.cgms = (buf[4] >> 4) & 3;
1631 copy_key(ai->lstk.title_key, &buf[5]);
1632 /* Returning data, let host change state */
1635 case DVD_LU_SEND_ASF:
1636 cdinfo(CD_DVD, "entering DVD_LU_SEND_ASF\n");
1637 setup_report_key(&cgc, ai->lsasf.agid, 5);
1639 if ((ret = cdo->generic_packet(cdi, &cgc)))
1642 ai->lsasf.asf = buf[7] & 1;
1645 /* LU data receive (LU changes state) */
1646 case DVD_HOST_SEND_CHALLENGE:
1647 cdinfo(CD_DVD, "entering DVD_HOST_SEND_CHALLENGE\n");
1648 setup_send_key(&cgc, ai->hsc.agid, 1);
1650 copy_chal(&buf[4], ai->hsc.chal);
1652 if ((ret = cdo->generic_packet(cdi, &cgc)))
1655 ai->type = DVD_LU_SEND_KEY1;
1658 case DVD_HOST_SEND_KEY2:
1659 cdinfo(CD_DVD, "entering DVD_HOST_SEND_KEY2\n");
1660 setup_send_key(&cgc, ai->hsk.agid, 3);
1662 copy_key(&buf[4], ai->hsk.key);
1664 if ((ret = cdo->generic_packet(cdi, &cgc))) {
1665 ai->type = DVD_AUTH_FAILURE;
1668 ai->type = DVD_AUTH_ESTABLISHED;
1672 case DVD_INVALIDATE_AGID:
1674 cdinfo(CD_DVD, "entering DVD_INVALIDATE_AGID\n");
1675 setup_report_key(&cgc, ai->lsa.agid, 0x3f);
1676 if ((ret = cdo->generic_packet(cdi, &cgc)))
1680 /* Get region settings */
1681 case DVD_LU_SEND_RPC_STATE:
1682 cdinfo(CD_DVD, "entering DVD_LU_SEND_RPC_STATE\n");
1683 setup_report_key(&cgc, 0, 8);
1684 memset(&rpc_state, 0, sizeof(rpc_state_t));
1685 cgc.buffer = (char *) &rpc_state;
1687 if ((ret = cdo->generic_packet(cdi, &cgc)))
1690 ai->lrpcs.type = rpc_state.type_code;
1691 ai->lrpcs.vra = rpc_state.vra;
1692 ai->lrpcs.ucca = rpc_state.ucca;
1693 ai->lrpcs.region_mask = rpc_state.region_mask;
1694 ai->lrpcs.rpc_scheme = rpc_state.rpc_scheme;
1697 /* Set region settings */
1698 case DVD_HOST_SEND_RPC_STATE:
1699 cdinfo(CD_DVD, "entering DVD_HOST_SEND_RPC_STATE\n");
1700 setup_send_key(&cgc, 0, 6);
1702 buf[4] = ai->hrpcs.pdrc;
1704 if ((ret = cdo->generic_packet(cdi, &cgc)))
1709 cdinfo(CD_WARNING, "Invalid DVD key ioctl (%d)\n", ai->type);
1716 static int dvd_read_physical(struct cdrom_device_info *cdi, dvd_struct *s)
1718 unsigned char buf[21], *base;
1719 struct dvd_layer *layer;
1720 struct packet_command cgc;
1721 struct cdrom_device_ops *cdo = cdi->ops;
1722 int ret, layer_num = s->physical.layer_num;
1724 if (layer_num >= DVD_LAYERS)
1727 init_cdrom_command(&cgc, buf, sizeof(buf), CGC_DATA_READ);
1728 cgc.cmd[0] = GPCMD_READ_DVD_STRUCTURE;
1729 cgc.cmd[6] = layer_num;
1730 cgc.cmd[7] = s->type;
1731 cgc.cmd[9] = cgc.buflen & 0xff;
1734 * refrain from reporting errors on non-existing layers (mainly)
1738 if ((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)
1770 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 if ((ret = cdo->generic_packet(cdi, &cgc)))
1783 s->copyright.cpst = buf[4];
1784 s->copyright.rmi = buf[5];
1789 static int dvd_read_disckey(struct cdrom_device_info *cdi, dvd_struct *s)
1793 struct packet_command cgc;
1794 struct cdrom_device_ops *cdo = cdi->ops;
1796 size = sizeof(s->disckey.value) + 4;
1798 if ((buf = kmalloc(size, GFP_KERNEL)) == NULL)
1801 init_cdrom_command(&cgc, buf, size, CGC_DATA_READ);
1802 cgc.cmd[0] = GPCMD_READ_DVD_STRUCTURE;
1803 cgc.cmd[7] = s->type;
1804 cgc.cmd[8] = size >> 8;
1805 cgc.cmd[9] = size & 0xff;
1806 cgc.cmd[10] = s->disckey.agid << 6;
1808 if (!(ret = cdo->generic_packet(cdi, &cgc)))
1809 memcpy(s->disckey.value, &buf[4], sizeof(s->disckey.value));
1815 static int dvd_read_bca(struct cdrom_device_info *cdi, dvd_struct *s)
1818 u_char buf[4 + 188];
1819 struct packet_command cgc;
1820 struct cdrom_device_ops *cdo = cdi->ops;
1822 init_cdrom_command(&cgc, buf, sizeof(buf), CGC_DATA_READ);
1823 cgc.cmd[0] = GPCMD_READ_DVD_STRUCTURE;
1824 cgc.cmd[7] = s->type;
1825 cgc.cmd[9] = cgc.buflen & 0xff;
1827 if ((ret = cdo->generic_packet(cdi, &cgc)))
1830 s->bca.len = buf[0] << 8 | buf[1];
1831 if (s->bca.len < 12 || s->bca.len > 188) {
1832 cdinfo(CD_WARNING, "Received invalid BCA length (%d)\n", s->bca.len);
1835 memcpy(s->bca.value, &buf[4], s->bca.len);
1840 static int dvd_read_manufact(struct cdrom_device_info *cdi, dvd_struct *s)
1844 struct packet_command cgc;
1845 struct cdrom_device_ops *cdo = cdi->ops;
1847 size = sizeof(s->manufact.value) + 4;
1849 if ((buf = kmalloc(size, GFP_KERNEL)) == NULL)
1852 init_cdrom_command(&cgc, buf, size, CGC_DATA_READ);
1853 cgc.cmd[0] = GPCMD_READ_DVD_STRUCTURE;
1854 cgc.cmd[7] = s->type;
1855 cgc.cmd[8] = size >> 8;
1856 cgc.cmd[9] = size & 0xff;
1858 if ((ret = cdo->generic_packet(cdi, &cgc))) {
1863 s->manufact.len = buf[0] << 8 | buf[1];
1864 if (s->manufact.len < 0 || s->manufact.len > 2048) {
1865 cdinfo(CD_WARNING, "Received invalid manufacture info length"
1866 " (%d)\n", s->manufact.len);
1869 memcpy(s->manufact.value, &buf[4], s->manufact.len);
1876 static int dvd_read_struct(struct cdrom_device_info *cdi, dvd_struct *s)
1879 case DVD_STRUCT_PHYSICAL:
1880 return dvd_read_physical(cdi, s);
1882 case DVD_STRUCT_COPYRIGHT:
1883 return dvd_read_copyright(cdi, s);
1885 case DVD_STRUCT_DISCKEY:
1886 return dvd_read_disckey(cdi, s);
1888 case DVD_STRUCT_BCA:
1889 return dvd_read_bca(cdi, s);
1891 case DVD_STRUCT_MANUFACT:
1892 return dvd_read_manufact(cdi, s);
1895 cdinfo(CD_WARNING, ": Invalid DVD structure read requested (%d)\n",
1901 int cdrom_mode_sense(struct cdrom_device_info *cdi,
1902 struct packet_command *cgc,
1903 int page_code, int page_control)
1905 struct cdrom_device_ops *cdo = cdi->ops;
1907 memset(cgc->cmd, 0, sizeof(cgc->cmd));
1909 cgc->cmd[0] = GPCMD_MODE_SENSE_10;
1910 cgc->cmd[2] = page_code | (page_control << 6);
1911 cgc->cmd[7] = cgc->buflen >> 8;
1912 cgc->cmd[8] = cgc->buflen & 0xff;
1913 cgc->data_direction = CGC_DATA_READ;
1914 return cdo->generic_packet(cdi, cgc);
1917 int cdrom_mode_select(struct cdrom_device_info *cdi,
1918 struct packet_command *cgc)
1920 struct cdrom_device_ops *cdo = cdi->ops;
1922 memset(cgc->cmd, 0, sizeof(cgc->cmd));
1923 memset(cgc->buffer, 0, 2);
1924 cgc->cmd[0] = GPCMD_MODE_SELECT_10;
1925 cgc->cmd[1] = 0x10; /* PF */
1926 cgc->cmd[7] = cgc->buflen >> 8;
1927 cgc->cmd[8] = cgc->buflen & 0xff;
1928 cgc->data_direction = CGC_DATA_WRITE;
1929 return cdo->generic_packet(cdi, cgc);
1932 static int cdrom_read_subchannel(struct cdrom_device_info *cdi,
1933 struct cdrom_subchnl *subchnl, int mcn)
1935 struct cdrom_device_ops *cdo = cdi->ops;
1936 struct packet_command cgc;
1940 init_cdrom_command(&cgc, buffer, 16, CGC_DATA_READ);
1941 cgc.cmd[0] = GPCMD_READ_SUBCHANNEL;
1942 cgc.cmd[1] = 2; /* MSF addressing */
1943 cgc.cmd[2] = 0x40; /* request subQ data */
1944 cgc.cmd[3] = mcn ? 2 : 1;
1947 if ((ret = cdo->generic_packet(cdi, &cgc)))
1950 subchnl->cdsc_audiostatus = cgc.buffer[1];
1951 subchnl->cdsc_format = CDROM_MSF;
1952 subchnl->cdsc_ctrl = cgc.buffer[5] & 0xf;
1953 subchnl->cdsc_trk = cgc.buffer[6];
1954 subchnl->cdsc_ind = cgc.buffer[7];
1956 subchnl->cdsc_reladdr.msf.minute = cgc.buffer[13];
1957 subchnl->cdsc_reladdr.msf.second = cgc.buffer[14];
1958 subchnl->cdsc_reladdr.msf.frame = cgc.buffer[15];
1959 subchnl->cdsc_absaddr.msf.minute = cgc.buffer[9];
1960 subchnl->cdsc_absaddr.msf.second = cgc.buffer[10];
1961 subchnl->cdsc_absaddr.msf.frame = cgc.buffer[11];
1967 * Specific READ_10 interface
1969 static int cdrom_read_cd(struct cdrom_device_info *cdi,
1970 struct packet_command *cgc, int lba,
1971 int blocksize, int nblocks)
1973 struct cdrom_device_ops *cdo = cdi->ops;
1975 memset(&cgc->cmd, 0, sizeof(cgc->cmd));
1976 cgc->cmd[0] = GPCMD_READ_10;
1977 cgc->cmd[2] = (lba >> 24) & 0xff;
1978 cgc->cmd[3] = (lba >> 16) & 0xff;
1979 cgc->cmd[4] = (lba >> 8) & 0xff;
1980 cgc->cmd[5] = lba & 0xff;
1981 cgc->cmd[6] = (nblocks >> 16) & 0xff;
1982 cgc->cmd[7] = (nblocks >> 8) & 0xff;
1983 cgc->cmd[8] = nblocks & 0xff;
1984 cgc->buflen = blocksize * nblocks;
1985 return cdo->generic_packet(cdi, cgc);
1988 /* very generic interface for reading the various types of blocks */
1989 static int cdrom_read_block(struct cdrom_device_info *cdi,
1990 struct packet_command *cgc,
1991 int lba, int nblocks, int format, int blksize)
1993 struct cdrom_device_ops *cdo = cdi->ops;
1995 memset(&cgc->cmd, 0, sizeof(cgc->cmd));
1996 cgc->cmd[0] = GPCMD_READ_CD;
1997 /* expected sector size - cdda,mode1,etc. */
1998 cgc->cmd[1] = format << 2;
1999 /* starting address */
2000 cgc->cmd[2] = (lba >> 24) & 0xff;
2001 cgc->cmd[3] = (lba >> 16) & 0xff;
2002 cgc->cmd[4] = (lba >> 8) & 0xff;
2003 cgc->cmd[5] = lba & 0xff;
2004 /* number of blocks */
2005 cgc->cmd[6] = (nblocks >> 16) & 0xff;
2006 cgc->cmd[7] = (nblocks >> 8) & 0xff;
2007 cgc->cmd[8] = nblocks & 0xff;
2008 cgc->buflen = blksize * nblocks;
2010 /* set the header info returned */
2012 case CD_FRAMESIZE_RAW0 : cgc->cmd[9] = 0x58; break;
2013 case CD_FRAMESIZE_RAW1 : cgc->cmd[9] = 0x78; break;
2014 case CD_FRAMESIZE_RAW : cgc->cmd[9] = 0xf8; break;
2015 default : cgc->cmd[9] = 0x10;
2018 return cdo->generic_packet(cdi, cgc);
2021 static int cdrom_read_cdda_old(struct cdrom_device_info *cdi, __u8 __user *ubuf,
2022 int lba, int nframes)
2024 struct packet_command cgc;
2028 cdi->last_sense = 0;
2030 memset(&cgc, 0, sizeof(cgc));
2033 * start with will ra.nframes size, back down if alloc fails
2037 cgc.buffer = kmalloc(CD_FRAMESIZE_RAW * nr, GFP_KERNEL);
2047 if (!access_ok(VERIFY_WRITE, ubuf, nframes * CD_FRAMESIZE_RAW)) {
2052 cgc.data_direction = CGC_DATA_READ;
2053 while (nframes > 0) {
2057 ret = cdrom_read_block(cdi, &cgc, lba, nr, 1, CD_FRAMESIZE_RAW);
2060 if (__copy_to_user(ubuf, cgc.buffer, CD_FRAMESIZE_RAW * nr)) {
2064 ubuf += CD_FRAMESIZE_RAW * nr;
2073 static int cdrom_read_cdda_bpc(struct cdrom_device_info *cdi, __u8 __user *ubuf,
2074 int lba, int nframes)
2076 struct request_queue *q = cdi->disk->queue;
2085 rq = blk_get_request(q, READ, GFP_KERNEL);
2089 cdi->last_sense = 0;
2093 if (cdi->cdda_method == CDDA_BPC_SINGLE)
2095 if (nr * CD_FRAMESIZE_RAW > (q->max_sectors << 9))
2096 nr = (q->max_sectors << 9) / CD_FRAMESIZE_RAW;
2098 len = nr * CD_FRAMESIZE_RAW;
2100 ret = blk_rq_map_user(q, rq, ubuf, len);
2104 rq->cmd[0] = GPCMD_READ_CD;
2105 rq->cmd[1] = 1 << 2;
2106 rq->cmd[2] = (lba >> 24) & 0xff;
2107 rq->cmd[3] = (lba >> 16) & 0xff;
2108 rq->cmd[4] = (lba >> 8) & 0xff;
2109 rq->cmd[5] = lba & 0xff;
2110 rq->cmd[6] = (nr >> 16) & 0xff;
2111 rq->cmd[7] = (nr >> 8) & 0xff;
2112 rq->cmd[8] = nr & 0xff;
2116 rq->cmd_type = REQ_TYPE_BLOCK_PC;
2117 rq->timeout = 60 * HZ;
2120 if (blk_execute_rq(q, cdi->disk, rq, 0)) {
2121 struct request_sense *s = rq->sense;
2123 cdi->last_sense = s->sense_key;
2126 if (blk_rq_unmap_user(bio))
2137 blk_put_request(rq);
2141 static int cdrom_read_cdda(struct cdrom_device_info *cdi, __u8 __user *ubuf,
2142 int lba, int nframes)
2146 if (cdi->cdda_method == CDDA_OLD)
2147 return cdrom_read_cdda_old(cdi, ubuf, lba, nframes);
2151 * for anything else than success and io error, we need to retry
2153 ret = cdrom_read_cdda_bpc(cdi, ubuf, lba, nframes);
2154 if (!ret || ret != -EIO)
2158 * I've seen drives get sense 4/8/3 udma crc errors on multi
2159 * frame dma, so drop to single frame dma if we need to
2161 if (cdi->cdda_method == CDDA_BPC_FULL && nframes > 1) {
2162 printk("cdrom: dropping to single frame dma\n");
2163 cdi->cdda_method = CDDA_BPC_SINGLE;
2168 * so we have an io error of some sort with multi frame dma. if the
2169 * condition wasn't a hardware error
2170 * problems, not for any error
2172 if (cdi->last_sense != 0x04 && cdi->last_sense != 0x0b)
2175 printk("cdrom: dropping to old style cdda (sense=%x)\n", cdi->last_sense);
2176 cdi->cdda_method = CDDA_OLD;
2177 return cdrom_read_cdda_old(cdi, ubuf, lba, nframes);
2180 static int cdrom_ioctl_multisession(struct cdrom_device_info *cdi,
2183 struct cdrom_multisession ms_info;
2184 u8 requested_format;
2187 cdinfo(CD_DO_IOCTL, "entering CDROMMULTISESSION\n");
2189 if (!(cdi->ops->capability & CDC_MULTI_SESSION))
2192 if (copy_from_user(&ms_info, argp, sizeof(ms_info)))
2195 requested_format = ms_info.addr_format;
2196 if (requested_format != CDROM_MSF && requested_format != CDROM_LBA)
2198 ms_info.addr_format = CDROM_LBA;
2200 ret = cdi->ops->get_last_session(cdi, &ms_info);
2204 sanitize_format(&ms_info.addr, &ms_info.addr_format, requested_format);
2206 if (copy_to_user(argp, &ms_info, sizeof(ms_info)))
2209 cdinfo(CD_DO_IOCTL, "CDROMMULTISESSION successful\n");
2213 static int cdrom_ioctl_eject(struct cdrom_device_info *cdi)
2215 cdinfo(CD_DO_IOCTL, "entering CDROMEJECT\n");
2217 if (!CDROM_CAN(CDC_OPEN_TRAY))
2219 if (cdi->use_count != 1 || keeplocked)
2221 if (CDROM_CAN(CDC_LOCK)) {
2222 int ret = cdi->ops->lock_door(cdi, 0);
2227 return cdi->ops->tray_move(cdi, 1);
2230 static int cdrom_ioctl_closetray(struct cdrom_device_info *cdi)
2232 cdinfo(CD_DO_IOCTL, "entering CDROMCLOSETRAY\n");
2234 if (!CDROM_CAN(CDC_CLOSE_TRAY))
2236 return cdi->ops->tray_move(cdi, 0);
2239 static int cdrom_ioctl_eject_sw(struct cdrom_device_info *cdi,
2242 cdinfo(CD_DO_IOCTL, "entering CDROMEJECT_SW\n");
2244 if (!CDROM_CAN(CDC_OPEN_TRAY))
2249 cdi->options &= ~(CDO_AUTO_CLOSE | CDO_AUTO_EJECT);
2251 cdi->options |= CDO_AUTO_CLOSE | CDO_AUTO_EJECT;
2255 static int cdrom_ioctl_media_changed(struct cdrom_device_info *cdi,
2258 struct cdrom_changer_info *info;
2261 cdinfo(CD_DO_IOCTL, "entering CDROM_MEDIA_CHANGED\n");
2263 if (!CDROM_CAN(CDC_MEDIA_CHANGED))
2266 /* cannot select disc or select current disc */
2267 if (!CDROM_CAN(CDC_SELECT_DISC) || arg == CDSL_CURRENT)
2268 return media_changed(cdi, 1);
2270 if ((unsigned int)arg >= cdi->capacity)
2273 info = kmalloc(sizeof(*info), GFP_KERNEL);
2277 ret = cdrom_read_mech_status(cdi, info);
2279 ret = info->slots[arg].change;
2284 static int cdrom_ioctl_set_options(struct cdrom_device_info *cdi,
2287 cdinfo(CD_DO_IOCTL, "entering CDROM_SET_OPTIONS\n");
2290 * Options need to be in sync with capability.
2291 * Too late for that, so we have to check each one separately.
2294 case CDO_USE_FFLAGS:
2295 case CDO_CHECK_TYPE:
2298 if (!CDROM_CAN(CDC_LOCK))
2302 return cdi->options;
2303 /* default is basically CDO_[AUTO_CLOSE|AUTO_EJECT] */
2305 if (!CDROM_CAN(arg))
2308 cdi->options |= (int) arg;
2309 return cdi->options;
2312 static int cdrom_ioctl_clear_options(struct cdrom_device_info *cdi,
2315 cdinfo(CD_DO_IOCTL, "entering CDROM_CLEAR_OPTIONS\n");
2317 cdi->options &= ~(int) arg;
2318 return cdi->options;
2321 static int cdrom_ioctl_select_speed(struct cdrom_device_info *cdi,
2324 cdinfo(CD_DO_IOCTL, "entering CDROM_SELECT_SPEED\n");
2326 if (!CDROM_CAN(CDC_SELECT_SPEED))
2328 return cdi->ops->select_speed(cdi, arg);
2331 static int cdrom_ioctl_select_disc(struct cdrom_device_info *cdi,
2334 cdinfo(CD_DO_IOCTL, "entering CDROM_SELECT_DISC\n");
2336 if (!CDROM_CAN(CDC_SELECT_DISC))
2339 if (arg != CDSL_CURRENT && arg != CDSL_NONE) {
2340 if ((int)arg >= cdi->capacity)
2345 * ->select_disc is a hook to allow a driver-specific way of
2346 * seleting disc. However, since there is no equivalent hook for
2347 * cdrom_slot_status this may not actually be useful...
2349 if (cdi->ops->select_disc)
2350 return cdi->ops->select_disc(cdi, arg);
2352 cdinfo(CD_CHANGER, "Using generic cdrom_select_disc()\n");
2353 return cdrom_select_disc(cdi, arg);
2356 static int cdrom_ioctl_reset(struct cdrom_device_info *cdi,
2357 struct block_device *bdev)
2359 cdinfo(CD_DO_IOCTL, "entering CDROM_RESET\n");
2361 if (!capable(CAP_SYS_ADMIN))
2363 if (!CDROM_CAN(CDC_RESET))
2365 invalidate_bdev(bdev);
2366 return cdi->ops->reset(cdi);
2369 static int cdrom_ioctl_lock_door(struct cdrom_device_info *cdi,
2372 cdinfo(CD_DO_IOCTL, "%socking door.\n", arg ? "L" : "Unl");
2374 if (!CDROM_CAN(CDC_LOCK))
2375 return -EDRIVE_CANT_DO_THIS;
2377 keeplocked = arg ? 1 : 0;
2380 * Don't unlock the door on multiple opens by default, but allow
2383 if (cdi->use_count != 1 && !arg && !capable(CAP_SYS_ADMIN))
2385 return cdi->ops->lock_door(cdi, arg);
2388 static int cdrom_ioctl_debug(struct cdrom_device_info *cdi,
2391 cdinfo(CD_DO_IOCTL, "%sabling debug.\n", arg ? "En" : "Dis");
2393 if (!capable(CAP_SYS_ADMIN))
2395 debug = arg ? 1 : 0;
2399 static int cdrom_ioctl_get_capability(struct cdrom_device_info *cdi)
2401 cdinfo(CD_DO_IOCTL, "entering CDROM_GET_CAPABILITY\n");
2402 return (cdi->ops->capability & ~cdi->mask);
2406 * The following function is implemented, although very few audio
2407 * discs give Universal Product Code information, which should just be
2408 * the Medium Catalog Number on the box. Note, that the way the code
2409 * is written on the CD is /not/ uniform across all discs!
2411 static int cdrom_ioctl_get_mcn(struct cdrom_device_info *cdi,
2414 struct cdrom_mcn mcn;
2417 cdinfo(CD_DO_IOCTL, "entering CDROM_GET_MCN\n");
2419 if (!(cdi->ops->capability & CDC_MCN))
2421 ret = cdi->ops->get_mcn(cdi, &mcn);
2425 if (copy_to_user(argp, &mcn, sizeof(mcn)))
2427 cdinfo(CD_DO_IOCTL, "CDROM_GET_MCN successful\n");
2431 static int cdrom_ioctl_drive_status(struct cdrom_device_info *cdi,
2434 cdinfo(CD_DO_IOCTL, "entering CDROM_DRIVE_STATUS\n");
2436 if (!(cdi->ops->capability & CDC_DRIVE_STATUS))
2438 if (!CDROM_CAN(CDC_SELECT_DISC) ||
2439 (arg == CDSL_CURRENT || arg == CDSL_NONE))
2440 return cdi->ops->drive_status(cdi, CDSL_CURRENT);
2441 if (((int)arg >= cdi->capacity))
2443 return cdrom_slot_status(cdi, arg);
2447 * Ok, this is where problems start. The current interface for the
2448 * CDROM_DISC_STATUS ioctl is flawed. It makes the false assumption that
2449 * CDs are all CDS_DATA_1 or all CDS_AUDIO, etc. Unfortunatly, while this
2450 * is often the case, it is also very common for CDs to have some tracks
2451 * with data, and some tracks with audio. Just because I feel like it,
2452 * I declare the following to be the best way to cope. If the CD has ANY
2453 * data tracks on it, it will be returned as a data CD. If it has any XA
2454 * tracks, I will return it as that. Now I could simplify this interface
2455 * by combining these returns with the above, but this more clearly
2456 * demonstrates the problem with the current interface. Too bad this
2457 * wasn't designed to use bitmasks... -Erik
2459 * Well, now we have the option CDS_MIXED: a mixed-type CD.
2460 * User level programmers might feel the ioctl is not very useful.
2463 static int cdrom_ioctl_disc_status(struct cdrom_device_info *cdi)
2467 cdinfo(CD_DO_IOCTL, "entering CDROM_DISC_STATUS\n");
2469 cdrom_count_tracks(cdi, &tracks);
2471 return tracks.error;
2473 /* Policy mode on */
2474 if (tracks.audio > 0) {
2475 if (!tracks.data && !tracks.cdi && !tracks.xa)
2485 if (tracks.data > 0)
2487 /* Policy mode off */
2489 cdinfo(CD_WARNING,"This disc doesn't have any tracks I recognize!\n");
2493 static int cdrom_ioctl_changer_nslots(struct cdrom_device_info *cdi)
2495 cdinfo(CD_DO_IOCTL, "entering CDROM_CHANGER_NSLOTS\n");
2496 return cdi->capacity;
2499 static int cdrom_ioctl_get_subchnl(struct cdrom_device_info *cdi,
2502 struct cdrom_subchnl q;
2506 /* cdinfo(CD_DO_IOCTL,"entering CDROMSUBCHNL\n");*/
2508 if (copy_from_user(&q, argp, sizeof(q)))
2511 requested = q.cdsc_format;
2512 if (requested != CDROM_MSF && requested != CDROM_LBA)
2514 q.cdsc_format = CDROM_MSF;
2516 ret = cdi->ops->audio_ioctl(cdi, CDROMSUBCHNL, &q);
2520 back = q.cdsc_format; /* local copy */
2521 sanitize_format(&q.cdsc_absaddr, &back, requested);
2522 sanitize_format(&q.cdsc_reladdr, &q.cdsc_format, requested);
2524 if (copy_to_user(argp, &q, sizeof(q)))
2526 /* cdinfo(CD_DO_IOCTL, "CDROMSUBCHNL successful\n"); */
2530 static int cdrom_ioctl_read_tochdr(struct cdrom_device_info *cdi,
2533 struct cdrom_tochdr header;
2536 /* cdinfo(CD_DO_IOCTL, "entering CDROMREADTOCHDR\n"); */
2538 if (copy_from_user(&header, argp, sizeof(header)))
2541 ret = cdi->ops->audio_ioctl(cdi, CDROMREADTOCHDR, &header);
2545 if (copy_to_user(argp, &header, sizeof(header)))
2547 /* cdinfo(CD_DO_IOCTL, "CDROMREADTOCHDR successful\n"); */
2551 static int cdrom_ioctl_read_tocentry(struct cdrom_device_info *cdi,
2554 struct cdrom_tocentry entry;
2555 u8 requested_format;
2558 /* cdinfo(CD_DO_IOCTL, "entering CDROMREADTOCENTRY\n"); */
2560 if (copy_from_user(&entry, argp, sizeof(entry)))
2563 requested_format = entry.cdte_format;
2564 if (requested_format != CDROM_MSF && requested_format != CDROM_LBA)
2566 /* make interface to low-level uniform */
2567 entry.cdte_format = CDROM_MSF;
2568 ret = cdi->ops->audio_ioctl(cdi, CDROMREADTOCENTRY, &entry);
2571 sanitize_format(&entry.cdte_addr, &entry.cdte_format, requested_format);
2573 if (copy_to_user(argp, &entry, sizeof(entry)))
2575 /* cdinfo(CD_DO_IOCTL, "CDROMREADTOCENTRY successful\n"); */
2579 static int cdrom_ioctl_play_msf(struct cdrom_device_info *cdi,
2582 struct cdrom_msf msf;
2584 cdinfo(CD_DO_IOCTL, "entering CDROMPLAYMSF\n");
2586 if (!CDROM_CAN(CDC_PLAY_AUDIO))
2588 if (copy_from_user(&msf, argp, sizeof(msf)))
2590 return cdi->ops->audio_ioctl(cdi, CDROMPLAYMSF, &msf);
2593 static int cdrom_ioctl_play_trkind(struct cdrom_device_info *cdi,
2599 cdinfo(CD_DO_IOCTL, "entering CDROMPLAYTRKIND\n");
2601 if (!CDROM_CAN(CDC_PLAY_AUDIO))
2603 if (copy_from_user(&ti, argp, sizeof(ti)))
2606 ret = check_for_audio_disc(cdi, cdi->ops);
2609 return cdi->ops->audio_ioctl(cdi, CDROMPLAYTRKIND, &ti);
2611 static int cdrom_ioctl_volctrl(struct cdrom_device_info *cdi,
2614 struct cdrom_volctrl volume;
2616 cdinfo(CD_DO_IOCTL, "entering CDROMVOLCTRL\n");
2618 if (!CDROM_CAN(CDC_PLAY_AUDIO))
2620 if (copy_from_user(&volume, argp, sizeof(volume)))
2622 return cdi->ops->audio_ioctl(cdi, CDROMVOLCTRL, &volume);
2625 static int cdrom_ioctl_volread(struct cdrom_device_info *cdi,
2628 struct cdrom_volctrl volume;
2631 cdinfo(CD_DO_IOCTL, "entering CDROMVOLREAD\n");
2633 if (!CDROM_CAN(CDC_PLAY_AUDIO))
2636 ret = cdi->ops->audio_ioctl(cdi, CDROMVOLREAD, &volume);
2640 if (copy_to_user(argp, &volume, sizeof(volume)))
2645 static int cdrom_ioctl_audioctl(struct cdrom_device_info *cdi,
2650 cdinfo(CD_DO_IOCTL, "doing audio ioctl (start/stop/pause/resume)\n");
2652 if (!CDROM_CAN(CDC_PLAY_AUDIO))
2654 ret = check_for_audio_disc(cdi, cdi->ops);
2657 return cdi->ops->audio_ioctl(cdi, cmd, NULL);
2661 * Just about every imaginable ioctl is supported in the Uniform layer
2663 * ATAPI / SCSI specific code now mainly resides in mmc_ioctl().
2665 int cdrom_ioctl(struct file * file, struct cdrom_device_info *cdi,
2666 struct inode *ip, unsigned int cmd, unsigned long arg)
2668 void __user *argp = (void __user *)arg;
2670 struct gendisk *disk = ip->i_bdev->bd_disk;
2673 * Try the generic SCSI command ioctl's first.
2675 ret = scsi_cmd_ioctl(file, disk->queue, disk, cmd, argp);
2680 case CDROMMULTISESSION:
2681 return cdrom_ioctl_multisession(cdi, argp);
2683 return cdrom_ioctl_eject(cdi);
2684 case CDROMCLOSETRAY:
2685 return cdrom_ioctl_closetray(cdi);
2687 return cdrom_ioctl_eject_sw(cdi, arg);
2688 case CDROM_MEDIA_CHANGED:
2689 return cdrom_ioctl_media_changed(cdi, arg);
2690 case CDROM_SET_OPTIONS:
2691 return cdrom_ioctl_set_options(cdi, arg);
2692 case CDROM_CLEAR_OPTIONS:
2693 return cdrom_ioctl_clear_options(cdi, arg);
2694 case CDROM_SELECT_SPEED:
2695 return cdrom_ioctl_select_speed(cdi, arg);
2696 case CDROM_SELECT_DISC:
2697 return cdrom_ioctl_select_disc(cdi, arg);
2699 return cdrom_ioctl_reset(cdi, ip->i_bdev);
2700 case CDROM_LOCKDOOR:
2701 return cdrom_ioctl_lock_door(cdi, arg);
2703 return cdrom_ioctl_debug(cdi, arg);
2704 case CDROM_GET_CAPABILITY:
2705 return cdrom_ioctl_get_capability(cdi);
2707 return cdrom_ioctl_get_mcn(cdi, argp);
2708 case CDROM_DRIVE_STATUS:
2709 return cdrom_ioctl_drive_status(cdi, arg);
2710 case CDROM_DISC_STATUS:
2711 return cdrom_ioctl_disc_status(cdi);
2712 case CDROM_CHANGER_NSLOTS:
2713 return cdrom_ioctl_changer_nslots(cdi);
2717 * Use the ioctls that are implemented through the generic_packet()
2718 * interface. this may look at bit funny, but if -ENOTTY is
2719 * returned that particular ioctl is not implemented and we
2720 * let it go through the device specific ones.
2722 if (CDROM_CAN(CDC_GENERIC_PACKET)) {
2723 ret = mmc_ioctl(cdi, cmd, arg);
2729 * Note: most of the cdinfo() calls are commented out here,
2730 * because they fill up the sys log when CD players poll
2735 return cdrom_ioctl_get_subchnl(cdi, argp);
2736 case CDROMREADTOCHDR:
2737 return cdrom_ioctl_read_tochdr(cdi, argp);
2738 case CDROMREADTOCENTRY:
2739 return cdrom_ioctl_read_tocentry(cdi, argp);
2741 return cdrom_ioctl_play_msf(cdi, argp);
2742 case CDROMPLAYTRKIND:
2743 return cdrom_ioctl_play_trkind(cdi, argp);
2745 return cdrom_ioctl_volctrl(cdi, argp);
2747 return cdrom_ioctl_volread(cdi, argp);
2752 return cdrom_ioctl_audioctl(cdi, cmd);
2759 * Required when we need to use READ_10 to issue other than 2048 block
2762 static int cdrom_switch_blocksize(struct cdrom_device_info *cdi, int size)
2764 struct cdrom_device_ops *cdo = cdi->ops;
2765 struct packet_command cgc;
2766 struct modesel_head mh;
2768 memset(&mh, 0, sizeof(mh));
2769 mh.block_desc_length = 0x08;
2770 mh.block_length_med = (size >> 8) & 0xff;
2771 mh.block_length_lo = size & 0xff;
2773 memset(&cgc, 0, sizeof(cgc));
2775 cgc.cmd[1] = 1 << 4;
2777 cgc.buflen = sizeof(mh);
2778 cgc.buffer = (char *) &mh;
2779 cgc.data_direction = CGC_DATA_WRITE;
2780 mh.block_desc_length = 0x08;
2781 mh.block_length_med = (size >> 8) & 0xff;
2782 mh.block_length_lo = size & 0xff;
2784 return cdo->generic_packet(cdi, &cgc);
2787 static int mmc_ioctl(struct cdrom_device_info *cdi, unsigned int cmd,
2790 struct cdrom_device_ops *cdo = cdi->ops;
2791 struct packet_command cgc;
2792 struct request_sense sense;
2793 unsigned char buffer[32];
2796 memset(&cgc, 0, sizeof(cgc));
2798 /* build a unified command and queue it through
2799 cdo->generic_packet() */
2802 case CDROMREADMODE1:
2803 case CDROMREADMODE2: {
2804 struct cdrom_msf msf;
2805 int blocksize = 0, format = 0, lba;
2809 blocksize = CD_FRAMESIZE_RAW;
2811 case CDROMREADMODE1:
2812 blocksize = CD_FRAMESIZE;
2815 case CDROMREADMODE2:
2816 blocksize = CD_FRAMESIZE_RAW0;
2819 IOCTL_IN(arg, struct cdrom_msf, msf);
2820 lba = msf_to_lba(msf.cdmsf_min0,msf.cdmsf_sec0,msf.cdmsf_frame0);
2821 /* FIXME: we need upper bound checking, too!! */
2824 cgc.buffer = kmalloc(blocksize, GFP_KERNEL);
2825 if (cgc.buffer == NULL)
2827 memset(&sense, 0, sizeof(sense));
2829 cgc.data_direction = CGC_DATA_READ;
2830 ret = cdrom_read_block(cdi, &cgc, lba, 1, format, blocksize);
2831 if (ret && sense.sense_key==0x05 && sense.asc==0x20 && sense.ascq==0x00) {
2833 * SCSI-II devices are not required to support
2834 * READ_CD, so let's try switching block size
2836 /* FIXME: switch back again... */
2837 if ((ret = cdrom_switch_blocksize(cdi, blocksize))) {
2842 ret = cdrom_read_cd(cdi, &cgc, lba, blocksize, 1);
2843 ret |= cdrom_switch_blocksize(cdi, blocksize);
2845 if (!ret && copy_to_user((char __user *)arg, cgc.buffer, blocksize))
2850 case CDROMREADAUDIO: {
2851 struct cdrom_read_audio ra;
2854 IOCTL_IN(arg, struct cdrom_read_audio, ra);
2856 if (ra.addr_format == CDROM_MSF)
2857 lba = msf_to_lba(ra.addr.msf.minute,
2860 else if (ra.addr_format == CDROM_LBA)
2865 /* FIXME: we need upper bound checking, too!! */
2866 if (lba < 0 || ra.nframes <= 0 || ra.nframes > CD_FRAMES)
2869 return cdrom_read_cdda(cdi, ra.buf, lba, ra.nframes);
2871 case CDROMSUBCHNL: {
2872 struct cdrom_subchnl q;
2873 u_char requested, back;
2874 IOCTL_IN(arg, struct cdrom_subchnl, q);
2875 requested = q.cdsc_format;
2876 if (!((requested == CDROM_MSF) ||
2877 (requested == CDROM_LBA)))
2879 q.cdsc_format = CDROM_MSF;
2880 if ((ret = cdrom_read_subchannel(cdi, &q, 0)))
2882 back = q.cdsc_format; /* local copy */
2883 sanitize_format(&q.cdsc_absaddr, &back, requested);
2884 sanitize_format(&q.cdsc_reladdr, &q.cdsc_format, requested);
2885 IOCTL_OUT(arg, struct cdrom_subchnl, q);
2886 /* cdinfo(CD_DO_IOCTL, "CDROMSUBCHNL successful\n"); */
2889 case CDROMPLAYMSF: {
2890 struct cdrom_msf msf;
2891 cdinfo(CD_DO_IOCTL, "entering CDROMPLAYMSF\n");
2892 IOCTL_IN(arg, struct cdrom_msf, msf);
2893 cgc.cmd[0] = GPCMD_PLAY_AUDIO_MSF;
2894 cgc.cmd[3] = msf.cdmsf_min0;
2895 cgc.cmd[4] = msf.cdmsf_sec0;
2896 cgc.cmd[5] = msf.cdmsf_frame0;
2897 cgc.cmd[6] = msf.cdmsf_min1;
2898 cgc.cmd[7] = msf.cdmsf_sec1;
2899 cgc.cmd[8] = msf.cdmsf_frame1;
2900 cgc.data_direction = CGC_DATA_NONE;
2901 return cdo->generic_packet(cdi, &cgc);
2903 case CDROMPLAYBLK: {
2904 struct cdrom_blk blk;
2905 cdinfo(CD_DO_IOCTL, "entering CDROMPLAYBLK\n");
2906 IOCTL_IN(arg, struct cdrom_blk, blk);
2907 cgc.cmd[0] = GPCMD_PLAY_AUDIO_10;
2908 cgc.cmd[2] = (blk.from >> 24) & 0xff;
2909 cgc.cmd[3] = (blk.from >> 16) & 0xff;
2910 cgc.cmd[4] = (blk.from >> 8) & 0xff;
2911 cgc.cmd[5] = blk.from & 0xff;
2912 cgc.cmd[7] = (blk.len >> 8) & 0xff;
2913 cgc.cmd[8] = blk.len & 0xff;
2914 cgc.data_direction = CGC_DATA_NONE;
2915 return cdo->generic_packet(cdi, &cgc);
2918 case CDROMVOLREAD: {
2919 struct cdrom_volctrl volctrl;
2920 char mask[sizeof(buffer)];
2921 unsigned short offset;
2923 cdinfo(CD_DO_IOCTL, "entering CDROMVOLUME\n");
2925 IOCTL_IN(arg, struct cdrom_volctrl, volctrl);
2927 cgc.buffer = buffer;
2929 if ((ret = cdrom_mode_sense(cdi, &cgc, GPMODE_AUDIO_CTL_PAGE, 0)))
2932 /* originally the code depended on buffer[1] to determine
2933 how much data is available for transfer. buffer[1] is
2934 unfortunately ambigious and the only reliable way seem
2935 to be to simply skip over the block descriptor... */
2936 offset = 8 + be16_to_cpu(*(__be16 *)(buffer+6));
2938 if (offset + 16 > sizeof(buffer))
2941 if (offset + 16 > cgc.buflen) {
2942 cgc.buflen = offset+16;
2943 ret = cdrom_mode_sense(cdi, &cgc,
2944 GPMODE_AUDIO_CTL_PAGE, 0);
2950 if ((buffer[offset] & 0x3f) != GPMODE_AUDIO_CTL_PAGE ||
2951 buffer[offset+1] < 14)
2954 /* now we have the current volume settings. if it was only
2955 a CDROMVOLREAD, return these values */
2956 if (cmd == CDROMVOLREAD) {
2957 volctrl.channel0 = buffer[offset+9];
2958 volctrl.channel1 = buffer[offset+11];
2959 volctrl.channel2 = buffer[offset+13];
2960 volctrl.channel3 = buffer[offset+15];
2961 IOCTL_OUT(arg, struct cdrom_volctrl, volctrl);
2965 /* get the volume mask */
2967 if ((ret = cdrom_mode_sense(cdi, &cgc,
2968 GPMODE_AUDIO_CTL_PAGE, 1)))
2971 buffer[offset+9] = volctrl.channel0 & mask[offset+9];
2972 buffer[offset+11] = volctrl.channel1 & mask[offset+11];
2973 buffer[offset+13] = volctrl.channel2 & mask[offset+13];
2974 buffer[offset+15] = volctrl.channel3 & mask[offset+15];
2977 cgc.buffer = buffer + offset - 8;
2978 memset(cgc.buffer, 0, 8);
2979 return cdrom_mode_select(cdi, &cgc);
2984 cdinfo(CD_DO_IOCTL, "entering CDROMSTART/CDROMSTOP\n");
2985 cgc.cmd[0] = GPCMD_START_STOP_UNIT;
2987 cgc.cmd[4] = (cmd == CDROMSTART) ? 1 : 0;
2988 cgc.data_direction = CGC_DATA_NONE;
2989 return cdo->generic_packet(cdi, &cgc);
2994 cdinfo(CD_DO_IOCTL, "entering CDROMPAUSE/CDROMRESUME\n");
2995 cgc.cmd[0] = GPCMD_PAUSE_RESUME;
2996 cgc.cmd[8] = (cmd == CDROMRESUME) ? 1 : 0;
2997 cgc.data_direction = CGC_DATA_NONE;
2998 return cdo->generic_packet(cdi, &cgc);
3001 case DVD_READ_STRUCT: {
3003 int size = sizeof(dvd_struct);
3004 if (!CDROM_CAN(CDC_DVD))
3006 if ((s = kmalloc(size, GFP_KERNEL)) == NULL)
3008 cdinfo(CD_DO_IOCTL, "entering DVD_READ_STRUCT\n");
3009 if (copy_from_user(s, (dvd_struct __user *)arg, size)) {
3013 if ((ret = dvd_read_struct(cdi, s))) {
3017 if (copy_to_user((dvd_struct __user *)arg, s, size))
3025 if (!CDROM_CAN(CDC_DVD))
3027 cdinfo(CD_DO_IOCTL, "entering DVD_AUTH\n");
3028 IOCTL_IN(arg, dvd_authinfo, ai);
3029 if ((ret = dvd_do_auth (cdi, &ai)))
3031 IOCTL_OUT(arg, dvd_authinfo, ai);
3035 case CDROM_NEXT_WRITABLE: {
3037 cdinfo(CD_DO_IOCTL, "entering CDROM_NEXT_WRITABLE\n");
3038 if ((ret = cdrom_get_next_writable(cdi, &next)))
3040 IOCTL_OUT(arg, long, next);
3043 case CDROM_LAST_WRITTEN: {
3045 cdinfo(CD_DO_IOCTL, "entering CDROM_LAST_WRITTEN\n");
3046 if ((ret = cdrom_get_last_written(cdi, &last)))
3048 IOCTL_OUT(arg, long, last);
3056 static int cdrom_get_track_info(struct cdrom_device_info *cdi, __u16 track, __u8 type,
3057 track_information *ti)
3059 struct cdrom_device_ops *cdo = cdi->ops;
3060 struct packet_command cgc;
3063 init_cdrom_command(&cgc, ti, 8, CGC_DATA_READ);
3064 cgc.cmd[0] = GPCMD_READ_TRACK_RZONE_INFO;
3065 cgc.cmd[1] = type & 3;
3066 cgc.cmd[4] = (track & 0xff00) >> 8;
3067 cgc.cmd[5] = track & 0xff;
3071 if ((ret = cdo->generic_packet(cdi, &cgc)))
3074 buflen = be16_to_cpu(ti->track_information_length) +
3075 sizeof(ti->track_information_length);
3077 if (buflen > sizeof(track_information))
3078 buflen = sizeof(track_information);
3080 cgc.cmd[8] = cgc.buflen = buflen;
3081 if ((ret = cdo->generic_packet(cdi, &cgc)))
3084 /* return actual fill size */
3088 /* requires CD R/RW */
3089 static int cdrom_get_disc_info(struct cdrom_device_info *cdi, disc_information *di)
3091 struct cdrom_device_ops *cdo = cdi->ops;
3092 struct packet_command cgc;
3095 /* set up command and get the disc info */
3096 init_cdrom_command(&cgc, di, sizeof(*di), CGC_DATA_READ);
3097 cgc.cmd[0] = GPCMD_READ_DISC_INFO;
3098 cgc.cmd[8] = cgc.buflen = 2;
3101 if ((ret = cdo->generic_packet(cdi, &cgc)))
3104 /* not all drives have the same disc_info length, so requeue
3105 * packet with the length the drive tells us it can supply
3107 buflen = be16_to_cpu(di->disc_information_length) +
3108 sizeof(di->disc_information_length);
3110 if (buflen > sizeof(disc_information))
3111 buflen = sizeof(disc_information);
3113 cgc.cmd[8] = cgc.buflen = buflen;
3114 if ((ret = cdo->generic_packet(cdi, &cgc)))
3117 /* return actual fill size */
3121 /* return the last written block on the CD-R media. this is for the udf
3123 int cdrom_get_last_written(struct cdrom_device_info *cdi, long *last_written)
3125 struct cdrom_tocentry toc;
3126 disc_information di;
3127 track_information ti;
3129 int ret = -1, ti_size;
3131 if (!CDROM_CAN(CDC_GENERIC_PACKET))
3134 ret = cdrom_get_disc_info(cdi, &di);
3135 if (ret < (int)(offsetof(typeof(di), last_track_lsb)
3136 + sizeof(di.last_track_lsb)))
3139 /* if unit didn't return msb, it's zeroed by cdrom_get_disc_info */
3140 last_track = (di.last_track_msb << 8) | di.last_track_lsb;
3141 ti_size = cdrom_get_track_info(cdi, last_track, 1, &ti);
3142 if (ti_size < (int)offsetof(typeof(ti), track_start))
3145 /* if this track is blank, try the previous. */
3150 ti_size = cdrom_get_track_info(cdi, last_track, 1, &ti);
3153 if (ti_size < (int)(offsetof(typeof(ti), track_size)
3154 + sizeof(ti.track_size)))
3157 /* if last recorded field is valid, return it. */
3158 if (ti.lra_v && ti_size >= (int)(offsetof(typeof(ti), last_rec_address)
3159 + sizeof(ti.last_rec_address))) {
3160 *last_written = be32_to_cpu(ti.last_rec_address);
3162 /* make it up instead */
3163 *last_written = be32_to_cpu(ti.track_start) +
3164 be32_to_cpu(ti.track_size);
3166 *last_written -= (be32_to_cpu(ti.free_blocks) + 7);
3170 /* this is where we end up if the drive either can't do a
3171 GPCMD_READ_DISC_INFO or GPCMD_READ_TRACK_RZONE_INFO or if
3172 it doesn't give enough information or fails. then we return
3173 the toc contents. */
3175 toc.cdte_format = CDROM_MSF;
3176 toc.cdte_track = CDROM_LEADOUT;
3177 if ((ret = cdi->ops->audio_ioctl(cdi, CDROMREADTOCENTRY, &toc)))
3179 sanitize_format(&toc.cdte_addr, &toc.cdte_format, CDROM_LBA);
3180 *last_written = toc.cdte_addr.lba;
3184 /* return the next writable block. also for udf file system. */
3185 static int cdrom_get_next_writable(struct cdrom_device_info *cdi, long *next_writable)
3187 disc_information di;
3188 track_information ti;
3192 if (!CDROM_CAN(CDC_GENERIC_PACKET))
3193 goto use_last_written;
3195 ret = cdrom_get_disc_info(cdi, &di);
3196 if (ret < 0 || ret < offsetof(typeof(di), last_track_lsb)
3197 + sizeof(di.last_track_lsb))
3198 goto use_last_written;
3200 /* if unit didn't return msb, it's zeroed by cdrom_get_disc_info */
3201 last_track = (di.last_track_msb << 8) | di.last_track_lsb;
3202 ti_size = cdrom_get_track_info(cdi, last_track, 1, &ti);
3203 if (ti_size < 0 || ti_size < offsetof(typeof(ti), track_start))
3204 goto use_last_written;
3206 /* if this track is blank, try the previous. */
3208 if (last_track == 1)
3209 goto use_last_written;
3211 ti_size = cdrom_get_track_info(cdi, last_track, 1, &ti);
3213 goto use_last_written;
3216 /* if next recordable address field is valid, use it. */
3217 if (ti.nwa_v && ti_size >= offsetof(typeof(ti), next_writable)
3218 + sizeof(ti.next_writable)) {
3219 *next_writable = be32_to_cpu(ti.next_writable);
3224 if ((ret = cdrom_get_last_written(cdi, next_writable))) {
3228 *next_writable += 7;
3233 EXPORT_SYMBOL(cdrom_get_last_written);
3234 EXPORT_SYMBOL(register_cdrom);
3235 EXPORT_SYMBOL(unregister_cdrom);
3236 EXPORT_SYMBOL(cdrom_open);
3237 EXPORT_SYMBOL(cdrom_release);
3238 EXPORT_SYMBOL(cdrom_ioctl);
3239 EXPORT_SYMBOL(cdrom_media_changed);
3240 EXPORT_SYMBOL(cdrom_number_of_slots);
3241 EXPORT_SYMBOL(cdrom_mode_select);
3242 EXPORT_SYMBOL(cdrom_mode_sense);
3243 EXPORT_SYMBOL(init_cdrom_command);
3244 EXPORT_SYMBOL(cdrom_get_media_event);
3246 #ifdef CONFIG_SYSCTL
3248 #define CDROM_STR_SIZE 1000
3250 static struct cdrom_sysctl_settings {
3251 char info[CDROM_STR_SIZE]; /* general info */
3252 int autoclose; /* close tray upon mount, etc */
3253 int autoeject; /* eject on umount */
3254 int debug; /* turn on debugging messages */
3255 int lock; /* lock the door on device open */
3256 int check; /* check media type */
3257 } cdrom_sysctl_settings;
3259 enum cdrom_print_option {
3266 static int cdrom_print_info(const char *header, int val, char *info,
3267 int *pos, enum cdrom_print_option option)
3269 const int max_size = sizeof(cdrom_sysctl_settings.info);
3270 struct cdrom_device_info *cdi;
3273 ret = scnprintf(info + *pos, max_size - *pos, header);
3279 list_for_each_entry(cdi, &cdrom_list, list) {
3282 ret = scnprintf(info + *pos, max_size - *pos,
3286 ret = scnprintf(info + *pos, max_size - *pos,
3287 "\t%d", cdi->speed);
3290 ret = scnprintf(info + *pos, max_size - *pos,
3291 "\t%d", cdi->capacity);
3293 case CTL_CAPABILITY:
3294 ret = scnprintf(info + *pos, max_size - *pos,
3295 "\t%d", CDROM_CAN(val) != 0);
3298 printk(KERN_INFO "cdrom: invalid option%d\n", option);
3309 static int cdrom_sysctl_info(ctl_table *ctl, int write, struct file * filp,
3310 void __user *buffer, size_t *lenp, loff_t *ppos)
3313 char *info = cdrom_sysctl_settings.info;
3314 const int max_size = sizeof(cdrom_sysctl_settings.info);
3316 if (!*lenp || (*ppos && !write)) {
3321 mutex_lock(&cdrom_mutex);
3323 pos = sprintf(info, "CD-ROM information, " VERSION "\n");
3325 if (cdrom_print_info("\ndrive name:\t", 0, info, &pos, CTL_NAME))
3327 if (cdrom_print_info("\ndrive speed:\t", 0, info, &pos, CTL_SPEED))
3329 if (cdrom_print_info("\ndrive # of slots:", 0, info, &pos, CTL_SLOTS))
3331 if (cdrom_print_info("\nCan close tray:\t",
3332 CDC_CLOSE_TRAY, info, &pos, CTL_CAPABILITY))
3334 if (cdrom_print_info("\nCan open tray:\t",
3335 CDC_OPEN_TRAY, info, &pos, CTL_CAPABILITY))
3337 if (cdrom_print_info("\nCan lock tray:\t",
3338 CDC_LOCK, info, &pos, CTL_CAPABILITY))
3340 if (cdrom_print_info("\nCan change speed:",
3341 CDC_SELECT_SPEED, info, &pos, CTL_CAPABILITY))
3343 if (cdrom_print_info("\nCan select disk:",
3344 CDC_SELECT_DISC, info, &pos, CTL_CAPABILITY))
3346 if (cdrom_print_info("\nCan read multisession:",
3347 CDC_MULTI_SESSION, info, &pos, CTL_CAPABILITY))
3349 if (cdrom_print_info("\nCan read MCN:\t",
3350 CDC_MCN, info, &pos, CTL_CAPABILITY))
3352 if (cdrom_print_info("\nReports media changed:",
3353 CDC_MEDIA_CHANGED, info, &pos, CTL_CAPABILITY))
3355 if (cdrom_print_info("\nCan play audio:\t",
3356 CDC_PLAY_AUDIO, info, &pos, CTL_CAPABILITY))
3358 if (cdrom_print_info("\nCan write CD-R:\t",
3359 CDC_CD_R, info, &pos, CTL_CAPABILITY))
3361 if (cdrom_print_info("\nCan write CD-RW:",
3362 CDC_CD_RW, info, &pos, CTL_CAPABILITY))
3364 if (cdrom_print_info("\nCan read DVD:\t",
3365 CDC_DVD, info, &pos, CTL_CAPABILITY))
3367 if (cdrom_print_info("\nCan write DVD-R:",
3368 CDC_DVD_R, info, &pos, CTL_CAPABILITY))
3370 if (cdrom_print_info("\nCan write DVD-RAM:",
3371 CDC_DVD_RAM, info, &pos, CTL_CAPABILITY))
3373 if (cdrom_print_info("\nCan read MRW:\t",
3374 CDC_MRW, info, &pos, CTL_CAPABILITY))
3376 if (cdrom_print_info("\nCan write MRW:\t",
3377 CDC_MRW_W, info, &pos, CTL_CAPABILITY))
3379 if (cdrom_print_info("\nCan write RAM:\t",
3380 CDC_RAM, info, &pos, CTL_CAPABILITY))
3382 if (!scnprintf(info + pos, max_size - pos, "\n\n"))
3385 mutex_unlock(&cdrom_mutex);
3386 return proc_dostring(ctl, write, filp, buffer, lenp, ppos);
3388 printk(KERN_INFO "cdrom: info buffer too small\n");
3392 /* Unfortunately, per device settings are not implemented through
3393 procfs/sysctl yet. When they are, this will naturally disappear. For now
3394 just update all drives. Later this will become the template on which
3395 new registered drives will be based. */
3396 static void cdrom_update_settings(void)
3398 struct cdrom_device_info *cdi;
3400 mutex_lock(&cdrom_mutex);
3401 list_for_each_entry(cdi, &cdrom_list, list) {
3402 if (autoclose && CDROM_CAN(CDC_CLOSE_TRAY))
3403 cdi->options |= CDO_AUTO_CLOSE;
3404 else if (!autoclose)
3405 cdi->options &= ~CDO_AUTO_CLOSE;
3406 if (autoeject && CDROM_CAN(CDC_OPEN_TRAY))
3407 cdi->options |= CDO_AUTO_EJECT;
3408 else if (!autoeject)
3409 cdi->options &= ~CDO_AUTO_EJECT;
3410 if (lockdoor && CDROM_CAN(CDC_LOCK))
3411 cdi->options |= CDO_LOCK;
3413 cdi->options &= ~CDO_LOCK;
3414 if (check_media_type)
3415 cdi->options |= CDO_CHECK_TYPE;
3417 cdi->options &= ~CDO_CHECK_TYPE;
3419 mutex_unlock(&cdrom_mutex);
3422 static int cdrom_sysctl_handler(ctl_table *ctl, int write, struct file * filp,
3423 void __user *buffer, size_t *lenp, loff_t *ppos)
3427 ret = proc_dointvec(ctl, write, filp, buffer, lenp, ppos);
3431 /* we only care for 1 or 0. */
3432 autoclose = !!cdrom_sysctl_settings.autoclose;
3433 autoeject = !!cdrom_sysctl_settings.autoeject;
3434 debug = !!cdrom_sysctl_settings.debug;
3435 lockdoor = !!cdrom_sysctl_settings.lock;
3436 check_media_type = !!cdrom_sysctl_settings.check;
3438 /* update the option flags according to the changes. we
3439 don't have per device options through sysctl yet,
3440 but we will have and then this will disappear. */
3441 cdrom_update_settings();
3447 /* Place files in /proc/sys/dev/cdrom */
3448 static ctl_table cdrom_table[] = {
3451 .data = &cdrom_sysctl_settings.info,
3452 .maxlen = CDROM_STR_SIZE,
3454 .proc_handler = &cdrom_sysctl_info,
3457 .procname = "autoclose",
3458 .data = &cdrom_sysctl_settings.autoclose,
3459 .maxlen = sizeof(int),
3461 .proc_handler = &cdrom_sysctl_handler,
3464 .procname = "autoeject",
3465 .data = &cdrom_sysctl_settings.autoeject,
3466 .maxlen = sizeof(int),
3468 .proc_handler = &cdrom_sysctl_handler,
3471 .procname = "debug",
3472 .data = &cdrom_sysctl_settings.debug,
3473 .maxlen = sizeof(int),
3475 .proc_handler = &cdrom_sysctl_handler,
3479 .data = &cdrom_sysctl_settings.lock,
3480 .maxlen = sizeof(int),
3482 .proc_handler = &cdrom_sysctl_handler,
3485 .procname = "check_media",
3486 .data = &cdrom_sysctl_settings.check,
3487 .maxlen = sizeof(int),
3489 .proc_handler = &cdrom_sysctl_handler
3494 static ctl_table cdrom_cdrom_table[] = {
3496 .ctl_name = DEV_CDROM,
3497 .procname = "cdrom",
3500 .child = cdrom_table,
3505 /* Make sure that /proc/sys/dev is there */
3506 static ctl_table cdrom_root_table[] = {
3508 .ctl_name = CTL_DEV,
3512 .child = cdrom_cdrom_table,
3516 static struct ctl_table_header *cdrom_sysctl_header;
3518 static void cdrom_sysctl_register(void)
3520 static int initialized;
3522 if (initialized == 1)
3525 cdrom_sysctl_header = register_sysctl_table(cdrom_root_table);
3527 /* set the defaults */
3528 cdrom_sysctl_settings.autoclose = autoclose;
3529 cdrom_sysctl_settings.autoeject = autoeject;
3530 cdrom_sysctl_settings.debug = debug;
3531 cdrom_sysctl_settings.lock = lockdoor;
3532 cdrom_sysctl_settings.check = check_media_type;
3537 static void cdrom_sysctl_unregister(void)
3539 if (cdrom_sysctl_header)
3540 unregister_sysctl_table(cdrom_sysctl_header);
3543 #else /* CONFIG_SYSCTL */
3545 static void cdrom_sysctl_register(void)
3549 static void cdrom_sysctl_unregister(void)
3553 #endif /* CONFIG_SYSCTL */
3555 static int __init cdrom_init(void)
3557 cdrom_sysctl_register();
3562 static void __exit cdrom_exit(void)
3564 printk(KERN_INFO "Uniform CD-ROM driver unloaded\n");
3565 cdrom_sysctl_unregister();
3568 module_init(cdrom_init);
3569 module_exit(cdrom_exit);
3570 MODULE_LICENSE("GPL");
projects / linux-2.6 / blob