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 loose the index part, however.
176 -- Small modifications to accomodate 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 -------------------------------------------------------------------------*/
233 #define REVISION "Revision: 3.12"
234 #define VERSION "Id: cdrom.c 3.12 2000/10/18"
236 /* I use an error-log mask to give fine grain control over the type of
237 messages dumped to the system logs. The available masks include: */
238 #define CD_NOTHING 0x0
239 #define CD_WARNING 0x1
240 #define CD_REG_UNREG 0x2
241 #define CD_DO_IOCTL 0x4
243 #define CD_CLOSE 0x10
244 #define CD_COUNT_TRACKS 0x20
245 #define CD_CHANGER 0x40
248 /* Define this to remove _all_ the debugging messages */
249 /* #define ERRLOGMASK CD_NOTHING */
250 #define ERRLOGMASK (CD_WARNING)
251 /* #define ERRLOGMASK (CD_WARNING|CD_OPEN|CD_COUNT_TRACKS|CD_CLOSE) */
252 /* #define ERRLOGMASK (CD_WARNING|CD_REG_UNREG|CD_DO_IOCTL|CD_OPEN|CD_CLOSE|CD_COUNT_TRACKS) */
254 #include <linux/config.h>
255 #include <linux/module.h>
256 #include <linux/fs.h>
257 #include <linux/major.h>
258 #include <linux/types.h>
259 #include <linux/errno.h>
260 #include <linux/kernel.h>
261 #include <linux/mm.h>
262 #include <linux/slab.h>
263 #include <linux/cdrom.h>
264 #include <linux/sysctl.h>
265 #include <linux/proc_fs.h>
266 #include <linux/init.h>
268 #include <asm/fcntl.h>
269 #include <asm/segment.h>
270 #include <asm/uaccess.h>
272 /* used to tell the module to turn on full debugging messages */
274 /* used to keep tray locked at all times */
275 static int keeplocked;
276 /* default compatibility mode */
277 static int autoclose=1;
278 static int autoeject;
279 static int lockdoor = 1;
280 /* will we ever get to use this... sigh. */
281 static int check_media_type;
282 MODULE_PARM(debug, "i");
283 MODULE_PARM(autoclose, "i");
284 MODULE_PARM(autoeject, "i");
285 MODULE_PARM(lockdoor, "i");
286 MODULE_PARM(check_media_type, "i");
288 #if (ERRLOGMASK!=CD_NOTHING)
289 #define cdinfo(type, fmt, args...) \
290 if ((ERRLOGMASK & type) || debug==1 ) \
291 printk(KERN_INFO "cdrom: " fmt, ## args)
293 #define cdinfo(type, fmt, args...)
296 /* These are used to simplify getting data in from and back to user land */
297 #define IOCTL_IN(arg, type, in) \
298 if (copy_from_user(&(in), (type *) (arg), sizeof (in))) \
301 #define IOCTL_OUT(arg, type, out) \
302 if (copy_to_user((type *) (arg), &(out), sizeof (out))) \
305 /* The (cdo->capability & ~cdi->mask & CDC_XXX) construct was used in
306 a lot of places. This macro makes the code more clear. */
307 #define CDROM_CAN(type) (cdi->ops->capability & ~cdi->mask & (type))
309 /* used in the audio ioctls */
310 #define CHECKAUDIO if ((ret=check_for_audio_disc(cdi, cdo))) return ret
312 /* Not-exported routines. */
313 static int open_for_data(struct cdrom_device_info * cdi);
314 static int check_for_audio_disc(struct cdrom_device_info * cdi,
315 struct cdrom_device_ops * cdo);
316 static void sanitize_format(union cdrom_addr *addr,
317 u_char * curr, u_char requested);
318 static int mmc_ioctl(struct cdrom_device_info *cdi, unsigned int cmd,
321 int cdrom_get_last_written(kdev_t dev, long *last_written);
322 int cdrom_get_next_writable(kdev_t dev, long *next_writable);
325 static void cdrom_sysctl_register(void);
326 #endif /* CONFIG_SYSCTL */
327 static struct cdrom_device_info *topCdromPtr;
328 static devfs_handle_t devfs_handle;
329 static struct unique_numspace cdrom_numspace = UNIQUE_NUMBERSPACE_INITIALISER;
331 /* This macro makes sure we don't have to check on cdrom_device_ops
332 * existence in the run-time routines below. Change_capability is a
333 * hack to have the capability flags defined const, while we can still
334 * change it here without gcc complaining at every line.
336 #define ENSURE(call, bits) if (cdo->call == NULL) *change_capability &= ~(bits)
338 int register_cdrom(struct cdrom_device_info *cdi)
340 static char banner_printed;
341 int major = MAJOR(cdi->dev);
342 struct cdrom_device_ops *cdo = cdi->ops;
343 int *change_capability = (int *)&cdo->capability; /* hack */
345 cdinfo(CD_OPEN, "entering register_cdrom\n");
347 if (major < 0 || major >= MAX_BLKDEV)
349 if (cdo->open == NULL || cdo->release == NULL)
351 if ( !banner_printed ) {
352 printk(KERN_INFO "Uniform CD-ROM driver " REVISION "\n");
355 cdrom_sysctl_register();
356 #endif /* CONFIG_SYSCTL */
358 ENSURE(drive_status, CDC_DRIVE_STATUS );
359 ENSURE(media_changed, CDC_MEDIA_CHANGED);
360 ENSURE(tray_move, CDC_CLOSE_TRAY | CDC_OPEN_TRAY);
361 ENSURE(lock_door, CDC_LOCK);
362 ENSURE(select_speed, CDC_SELECT_SPEED);
363 ENSURE(get_last_session, CDC_MULTI_SESSION);
364 ENSURE(get_mcn, CDC_MCN);
365 ENSURE(reset, CDC_RESET);
366 ENSURE(audio_ioctl, CDC_PLAY_AUDIO);
367 ENSURE(dev_ioctl, CDC_IOCTLS);
368 ENSURE(generic_packet, CDC_GENERIC_PACKET);
371 cdi->options = CDO_USE_FFLAGS;
373 if (autoclose==1 && CDROM_CAN(CDC_CLOSE_TRAY))
374 cdi->options |= (int) CDO_AUTO_CLOSE;
375 if (autoeject==1 && CDROM_CAN(CDC_OPEN_TRAY))
376 cdi->options |= (int) CDO_AUTO_EJECT;
378 cdi->options |= (int) CDO_LOCK;
379 if (check_media_type==1)
380 cdi->options |= (int) CDO_CHECK_TYPE;
383 devfs_handle = devfs_mk_dir (NULL, "cdroms", NULL);
384 cdi->number = devfs_alloc_unique_number (&cdrom_numspace);
387 devfs_handle_t slave;
390 pos = devfs_generate_path (cdi->de, rname + 3,
394 sprintf (vname, "cdrom%d", cdi->number);
395 strncpy (rname + pos, "../", 3);
396 devfs_mk_symlink (devfs_handle, vname,
398 rname + pos, &slave, NULL);
399 devfs_auto_unregister (cdi->de, slave);
402 cdinfo(CD_REG_UNREG, "drive \"/dev/%s\" registered\n", cdi->name);
403 cdi->next = topCdromPtr;
409 int unregister_cdrom(struct cdrom_device_info *unreg)
411 struct cdrom_device_info *cdi, *prev;
412 int major = MAJOR(unreg->dev);
414 cdinfo(CD_OPEN, "entering unregister_cdrom\n");
416 if (major < 0 || major >= MAX_BLKDEV)
421 while (cdi != NULL && cdi->dev != unreg->dev) {
429 prev->next = cdi->next;
431 topCdromPtr = cdi->next;
432 cdi->ops->n_minors--;
433 devfs_unregister (cdi->de);
434 devfs_dealloc_unique_number (&cdrom_numspace, cdi->number);
435 cdinfo(CD_REG_UNREG, "drive \"/dev/%s\" unregistered\n", cdi->name);
439 struct cdrom_device_info *cdrom_find_device(kdev_t dev)
441 struct cdrom_device_info *cdi;
444 while (cdi != NULL && cdi->dev != dev)
450 /* We use the open-option O_NONBLOCK to indicate that the
451 * purpose of opening is only for subsequent ioctl() calls; no device
452 * integrity checks are performed.
454 * We hope that all cd-player programs will adopt this convention. It
455 * is in their own interest: device control becomes a lot easier
458 int cdrom_open(struct inode *ip, struct file *fp)
460 struct cdrom_device_info *cdi;
461 kdev_t dev = ip->i_rdev;
464 cdinfo(CD_OPEN, "entering cdrom_open\n");
465 if ((cdi = cdrom_find_device(dev)) == NULL)
468 if ((fp->f_mode & FMODE_WRITE) && !CDROM_CAN(CDC_DVD_RAM))
471 /* if this was a O_NONBLOCK open and we should honor the flags,
472 * do a quick open without drive/disc integrity checks. */
473 if ((fp->f_flags & O_NONBLOCK) && (cdi->options & CDO_USE_FFLAGS))
474 ret = cdi->ops->open(cdi, 1);
476 ret = open_for_data(cdi);
478 if (!ret) cdi->use_count++;
480 cdinfo(CD_OPEN, "Use count for \"/dev/%s\" now %d\n", cdi->name, cdi->use_count);
481 /* Do this on open. Don't wait for mount, because they might
482 not be mounting, but opening with O_NONBLOCK */
483 check_disk_change(dev);
488 int open_for_data(struct cdrom_device_info * cdi)
491 struct cdrom_device_ops *cdo = cdi->ops;
493 cdinfo(CD_OPEN, "entering open_for_data\n");
494 /* Check if the driver can report drive status. If it can, we
495 can do clever things. If it can't, well, we at least tried! */
496 if (cdo->drive_status != NULL) {
497 ret = cdo->drive_status(cdi, CDSL_CURRENT);
498 cdinfo(CD_OPEN, "drive_status=%d\n", ret);
499 if (ret == CDS_TRAY_OPEN) {
500 cdinfo(CD_OPEN, "the tray is open...\n");
501 /* can/may i close it? */
502 if (CDROM_CAN(CDC_CLOSE_TRAY) &&
503 cdi->options & CDO_AUTO_CLOSE) {
504 cdinfo(CD_OPEN, "trying to close the tray.\n");
505 ret=cdo->tray_move(cdi,0);
507 cdinfo(CD_OPEN, "bummer. tried to close the tray but failed.\n");
508 /* Ignore the error from the low
509 level driver. We don't care why it
510 couldn't close the tray. We only care
511 that there is no disc in the drive,
512 since that is the _REAL_ problem here.*/
514 goto clean_up_and_return;
517 cdinfo(CD_OPEN, "bummer. this drive can't close the tray.\n");
519 goto clean_up_and_return;
521 /* Ok, the door should be closed now.. Check again */
522 ret = cdo->drive_status(cdi, CDSL_CURRENT);
523 if ((ret == CDS_NO_DISC) || (ret==CDS_TRAY_OPEN)) {
524 cdinfo(CD_OPEN, "bummer. the tray is still not closed.\n");
525 cdinfo(CD_OPEN, "tray might not contain a medium.\n");
527 goto clean_up_and_return;
529 cdinfo(CD_OPEN, "the tray is now closed.\n");
531 if (ret!=CDS_DISC_OK) {
533 goto clean_up_and_return;
536 cdrom_count_tracks(cdi, &tracks);
537 if (tracks.error == CDS_NO_DISC) {
538 cdinfo(CD_OPEN, "bummer. no disc.\n");
540 goto clean_up_and_return;
542 /* CD-Players which don't use O_NONBLOCK, workman
543 * for example, need bit CDO_CHECK_TYPE cleared! */
544 if (tracks.data==0) {
545 if (cdi->options & CDO_CHECK_TYPE) {
546 /* give people a warning shot, now that CDO_CHECK_TYPE
547 is the default case! */
548 cdinfo(CD_OPEN, "bummer. wrong media type.\n");
549 cdinfo(CD_WARNING, "pid %d must open device O_NONBLOCK!\n",
550 (unsigned int)current->pid);
552 goto clean_up_and_return;
555 cdinfo(CD_OPEN, "wrong media type, but CDO_CHECK_TYPE not set.\n");
559 cdinfo(CD_OPEN, "all seems well, opening the device.\n");
561 /* all seems well, we can open the device */
562 ret = cdo->open(cdi, 0); /* open for data */
563 cdinfo(CD_OPEN, "opening the device gave me %d.\n", ret);
564 /* After all this careful checking, we shouldn't have problems
565 opening the device, but we don't want the device locked if
566 this somehow fails... */
568 cdinfo(CD_OPEN, "open device failed.\n");
569 goto clean_up_and_return;
571 if (CDROM_CAN(CDC_LOCK) && cdi->options & CDO_LOCK) {
572 cdo->lock_door(cdi, 1);
573 cdinfo(CD_OPEN, "door locked.\n");
575 cdinfo(CD_OPEN, "device opened successfully.\n");
578 /* Something failed. Try to unlock the drive, because some drivers
579 (notably ide-cd) lock the drive after every command. This produced
580 a nasty bug where after mount failed, the drive would remain locked!
581 This ensures that the drive gets unlocked after a mount fails. This
582 is a goto to avoid bloating the driver with redundant code. */
584 cdinfo(CD_WARNING, "open failed.\n");
585 if (CDROM_CAN(CDC_LOCK) && cdi->options & CDO_LOCK) {
586 cdo->lock_door(cdi, 0);
587 cdinfo(CD_OPEN, "door unlocked.\n");
592 /* This code is similar to that in open_for_data. The routine is called
593 whenever an audio play operation is requested.
595 int check_for_audio_disc(struct cdrom_device_info * cdi,
596 struct cdrom_device_ops * cdo)
600 cdinfo(CD_OPEN, "entering check_for_audio_disc\n");
601 if (!(cdi->options & CDO_CHECK_TYPE))
603 if (cdo->drive_status != NULL) {
604 ret = cdo->drive_status(cdi, CDSL_CURRENT);
605 cdinfo(CD_OPEN, "drive_status=%d\n", ret);
606 if (ret == CDS_TRAY_OPEN) {
607 cdinfo(CD_OPEN, "the tray is open...\n");
608 /* can/may i close it? */
609 if (CDROM_CAN(CDC_CLOSE_TRAY) &&
610 cdi->options & CDO_AUTO_CLOSE) {
611 cdinfo(CD_OPEN, "trying to close the tray.\n");
612 ret=cdo->tray_move(cdi,0);
614 cdinfo(CD_OPEN, "bummer. tried to close tray but failed.\n");
615 /* Ignore the error from the low
616 level driver. We don't care why it
617 couldn't close the tray. We only care
618 that there is no disc in the drive,
619 since that is the _REAL_ problem here.*/
623 cdinfo(CD_OPEN, "bummer. this driver can't close the tray.\n");
626 /* Ok, the door should be closed now.. Check again */
627 ret = cdo->drive_status(cdi, CDSL_CURRENT);
628 if ((ret == CDS_NO_DISC) || (ret==CDS_TRAY_OPEN)) {
629 cdinfo(CD_OPEN, "bummer. the tray is still not closed.\n");
632 if (ret!=CDS_DISC_OK) {
633 cdinfo(CD_OPEN, "bummer. disc isn't ready.\n");
636 cdinfo(CD_OPEN, "the tray is now closed.\n");
639 cdrom_count_tracks(cdi, &tracks);
641 return(tracks.error);
650 /* Admittedly, the logic below could be performed in a nicer way. */
651 int cdrom_release(struct inode *ip, struct file *fp)
653 kdev_t dev = ip->i_rdev;
654 struct cdrom_device_info *cdi = cdrom_find_device(dev);
655 struct cdrom_device_ops *cdo = cdi->ops;
658 cdinfo(CD_CLOSE, "entering cdrom_release\n");
660 if (cdi->use_count > 0)
662 if (cdi->use_count == 0)
663 cdinfo(CD_CLOSE, "Use count for \"/dev/%s\" now zero\n", cdi->name);
664 if (cdi->use_count == 0 &&
665 cdo->capability & CDC_LOCK && !keeplocked) {
666 cdinfo(CD_CLOSE, "Unlocking door!\n");
667 cdo->lock_door(cdi, 0);
669 opened_for_data = !(cdi->options & CDO_USE_FFLAGS) ||
670 !(fp && fp->f_flags & O_NONBLOCK);
672 if (cdi->use_count == 0) { /* last process that closes dev*/
673 if (opened_for_data &&
674 cdi->options & CDO_AUTO_EJECT && CDROM_CAN(CDC_OPEN_TRAY))
675 cdo->tray_move(cdi, 1);
680 static int cdrom_read_mech_status(struct cdrom_device_info *cdi,
681 struct cdrom_changer_info *buf)
683 struct cdrom_generic_command cgc;
684 struct cdrom_device_ops *cdo = cdi->ops;
688 * Sanyo changer isn't spec compliant (doesn't use regular change
689 * LOAD_UNLOAD command, and it doesn't implement the mech status
692 if (cdi->sanyo_slot) {
694 buf->hdr.curslot = cdi->sanyo_slot == 3 ? 0 : cdi->sanyo_slot;
695 for (length = 0; length < 3; length++) {
696 buf->slots[length].disc_present = 1;
697 buf->slots[length].change = 0;
702 length = sizeof(struct cdrom_mechstat_header) +
703 cdi->capacity * sizeof(struct cdrom_slot);
705 init_cdrom_command(&cgc, buf, length, CGC_DATA_READ);
706 cgc.cmd[0] = GPCMD_MECHANISM_STATUS;
707 cgc.cmd[8] = (length >> 8) & 0xff;
708 cgc.cmd[9] = length & 0xff;
709 return cdo->generic_packet(cdi, &cgc);
712 static int cdrom_slot_status(struct cdrom_device_info *cdi, int slot)
714 struct cdrom_changer_info info;
717 cdinfo(CD_CHANGER, "entering cdrom_slot_status()\n");
721 if ((ret = cdrom_read_mech_status(cdi, &info)))
724 if (info.slots[slot].disc_present)
731 /* Return the number of slots for an ATAPI/SCSI cdrom,
732 * return 1 if not a changer.
734 int cdrom_number_of_slots(struct cdrom_device_info *cdi)
738 struct cdrom_changer_info info;
740 cdinfo(CD_CHANGER, "entering cdrom_number_of_slots()\n");
741 /* cdrom_read_mech_status requires a valid value for capacity: */
744 if ((status = cdrom_read_mech_status(cdi, &info)) == 0)
745 nslots = info.hdr.nslots;
751 /* If SLOT < 0, unload the current slot. Otherwise, try to load SLOT. */
752 static int cdrom_load_unload(struct cdrom_device_info *cdi, int slot)
754 struct cdrom_generic_command cgc;
756 cdinfo(CD_CHANGER, "entering cdrom_load_unload()\n");
757 if (cdi->sanyo_slot && slot < 0)
760 init_cdrom_command(&cgc, NULL, 0, CGC_DATA_NONE);
761 cgc.cmd[0] = GPCMD_LOAD_UNLOAD;
762 cgc.cmd[4] = 2 + (slot >= 0);
764 cgc.timeout = 60 * HZ;
766 /* The Sanyo 3 CD changer uses byte 7 of the
767 GPCMD_TEST_UNIT_READY to command to switch CDs instead of
768 using the GPCMD_LOAD_UNLOAD opcode. */
769 if (cdi->sanyo_slot && -1 < slot) {
770 cgc.cmd[0] = GPCMD_TEST_UNIT_READY;
772 cgc.cmd[4] = cgc.cmd[8] = 0;
773 cdi->sanyo_slot = slot ? slot : 3;
776 return cdi->ops->generic_packet(cdi, &cgc);
779 int cdrom_select_disc(struct cdrom_device_info *cdi, int slot)
781 struct cdrom_changer_info info;
785 cdinfo(CD_CHANGER, "entering cdrom_select_disc()\n");
786 if (!CDROM_CAN(CDC_SELECT_DISC))
787 return -EDRIVE_CANT_DO_THIS;
789 (void) cdi->ops->media_changed(cdi, slot);
791 if (slot == CDSL_NONE) {
792 /* set media changed bits, on both queues */
794 return cdrom_load_unload(cdi, -1);
797 if ((ret = cdrom_read_mech_status(cdi, &info)))
800 curslot = info.hdr.curslot;
802 if (cdi->use_count > 1 || keeplocked) {
803 if (slot == CDSL_CURRENT) {
810 /* Specifying CDSL_CURRENT will attempt to load the currnet slot,
811 which is useful if it had been previously unloaded.
812 Whether it can or not, it returns the current slot.
813 Similarly, if slot happens to be the current one, we still
815 if (slot == CDSL_CURRENT)
818 /* set media changed bits on both queues */
820 if ((ret = cdrom_load_unload(cdi, slot)))
826 /* We want to make media_changed accessible to the user through an
827 * ioctl. The main problem now is that we must double-buffer the
828 * low-level implementation, to assure that the VFS and the user both
829 * see a medium change once.
833 int media_changed(struct cdrom_device_info *cdi, int queue)
835 unsigned int mask = (1 << (queue & 1));
836 int ret = !!(cdi->mc_flags & mask);
838 if (!CDROM_CAN(CDC_MEDIA_CHANGED))
840 /* changed since last call? */
841 if (cdi->ops->media_changed(cdi, CDSL_CURRENT)) {
842 cdi->mc_flags = 0x3; /* set bit on both queues */
845 cdi->mc_flags &= ~mask; /* clear bit */
849 int cdrom_media_changed(kdev_t dev)
851 struct cdrom_device_info *cdi = cdrom_find_device(dev);
852 /* This talks to the VFS, which doesn't like errors - just 1 or 0.
853 * Returning "0" is always safe (media hasn't been changed). Do that
854 * if the low-level cdrom driver dosn't support media changed. */
855 if (cdi == NULL || cdi->ops->media_changed == NULL)
857 if (!CDROM_CAN(CDC_MEDIA_CHANGED))
859 return media_changed(cdi, 0);
862 /* badly broken, I know. Is due for a fixup anytime. */
863 void cdrom_count_tracks(struct cdrom_device_info *cdi, tracktype* tracks)
865 struct cdrom_tochdr header;
866 struct cdrom_tocentry entry;
873 cdinfo(CD_COUNT_TRACKS, "entering cdrom_count_tracks\n");
874 if (!CDROM_CAN(CDC_PLAY_AUDIO)) {
875 tracks->error=CDS_NO_INFO;
878 /* Grab the TOC header so we can see how many tracks there are */
879 if ((ret = cdi->ops->audio_ioctl(cdi, CDROMREADTOCHDR, &header))) {
880 if (ret == -ENOMEDIUM)
881 tracks->error = CDS_NO_DISC;
883 tracks->error = CDS_NO_INFO;
886 /* check what type of tracks are on this disc */
887 entry.cdte_format = CDROM_MSF;
888 for (i = header.cdth_trk0; i <= header.cdth_trk1; i++) {
889 entry.cdte_track = i;
890 if (cdi->ops->audio_ioctl(cdi, CDROMREADTOCENTRY, &entry)) {
891 tracks->error=CDS_NO_INFO;
894 if (entry.cdte_ctrl & CDROM_DATA_TRACK) {
895 if (entry.cdte_format == 0x10)
897 else if (entry.cdte_format == 0x20)
903 cdinfo(CD_COUNT_TRACKS, "track %d: format=%d, ctrl=%d\n",
904 i, entry.cdte_format, entry.cdte_ctrl);
906 cdinfo(CD_COUNT_TRACKS, "disc has %d tracks: %d=audio %d=data %d=Cd-I %d=XA\n",
907 header.cdth_trk1, tracks->audio, tracks->data,
908 tracks->cdi, tracks->xa);
911 /* Requests to the low-level drivers will /always/ be done in the
912 following format convention:
914 CDROM_LBA: all data-related requests.
915 CDROM_MSF: all audio-related requests.
917 However, a low-level implementation is allowed to refuse this
918 request, and return information in its own favorite format.
920 It doesn't make sense /at all/ to ask for a play_audio in LBA
921 format, or ask for multi-session info in MSF format. However, for
922 backward compatibility these format requests will be satisfied, but
923 the requests to the low-level drivers will be sanitized in the more
924 meaningful format indicated above.
928 void sanitize_format(union cdrom_addr *addr,
929 u_char * curr, u_char requested)
931 if (*curr == requested)
932 return; /* nothing to be done! */
933 if (requested == CDROM_LBA) {
934 addr->lba = (int) addr->msf.frame +
935 75 * (addr->msf.second - 2 + 60 * addr->msf.minute);
936 } else { /* CDROM_MSF */
938 addr->msf.frame = lba % 75;
941 addr->msf.second = lba % 60;
942 addr->msf.minute = lba / 60;
947 void init_cdrom_command(struct cdrom_generic_command *cgc, void *buf, int len,
950 memset(cgc, 0, sizeof(struct cdrom_generic_command));
953 cgc->buffer = (char *) buf;
955 cgc->data_direction = type;
961 #define copy_key(dest,src) memcpy((dest), (src), sizeof(dvd_key))
962 #define copy_chal(dest,src) memcpy((dest), (src), sizeof(dvd_challenge))
964 static void setup_report_key(struct cdrom_generic_command *cgc, unsigned agid, unsigned type)
966 cgc->cmd[0] = GPCMD_REPORT_KEY;
967 cgc->cmd[10] = type | (agid << 6);
969 case 0: case 8: case 5: {
982 cgc->cmd[9] = cgc->buflen;
983 cgc->data_direction = CGC_DATA_READ;
986 static void setup_send_key(struct cdrom_generic_command *cgc, unsigned agid, unsigned type)
988 cgc->cmd[0] = GPCMD_SEND_KEY;
989 cgc->cmd[10] = type | (agid << 6);
1004 cgc->cmd[9] = cgc->buflen;
1005 cgc->data_direction = CGC_DATA_WRITE;
1008 static int dvd_do_auth(struct cdrom_device_info *cdi, dvd_authinfo *ai)
1012 struct cdrom_generic_command cgc;
1013 struct cdrom_device_ops *cdo = cdi->ops;
1014 rpc_state_t rpc_state;
1016 memset(buf, 0, sizeof(buf));
1017 init_cdrom_command(&cgc, buf, 0, CGC_DATA_READ);
1021 case DVD_LU_SEND_AGID:
1022 cdinfo(CD_DVD, "entering DVD_LU_SEND_AGID\n");
1023 setup_report_key(&cgc, ai->lsa.agid, 0);
1025 if ((ret = cdo->generic_packet(cdi, &cgc)))
1028 ai->lsa.agid = buf[7] >> 6;
1029 /* Returning data, let host change state */
1032 case DVD_LU_SEND_KEY1:
1033 cdinfo(CD_DVD, "entering DVD_LU_SEND_KEY1\n");
1034 setup_report_key(&cgc, ai->lsk.agid, 2);
1036 if ((ret = cdo->generic_packet(cdi, &cgc)))
1039 copy_key(ai->lsk.key, &buf[4]);
1040 /* Returning data, let host change state */
1043 case DVD_LU_SEND_CHALLENGE:
1044 cdinfo(CD_DVD, "entering DVD_LU_SEND_CHALLENGE\n");
1045 setup_report_key(&cgc, ai->lsc.agid, 1);
1047 if ((ret = cdo->generic_packet(cdi, &cgc)))
1050 copy_chal(ai->lsc.chal, &buf[4]);
1051 /* Returning data, let host change state */
1055 case DVD_LU_SEND_TITLE_KEY:
1056 cdinfo(CD_DVD, "entering DVD_LU_SEND_TITLE_KEY\n");
1057 setup_report_key(&cgc, ai->lstk.agid, 4);
1058 cgc.cmd[5] = ai->lstk.lba;
1059 cgc.cmd[4] = ai->lstk.lba >> 8;
1060 cgc.cmd[3] = ai->lstk.lba >> 16;
1061 cgc.cmd[2] = ai->lstk.lba >> 24;
1063 if ((ret = cdo->generic_packet(cdi, &cgc)))
1066 ai->lstk.cpm = (buf[4] >> 7) & 1;
1067 ai->lstk.cp_sec = (buf[4] >> 6) & 1;
1068 ai->lstk.cgms = (buf[4] >> 4) & 3;
1069 copy_key(ai->lstk.title_key, &buf[5]);
1070 /* Returning data, let host change state */
1073 case DVD_LU_SEND_ASF:
1074 cdinfo(CD_DVD, "entering DVD_LU_SEND_ASF\n");
1075 setup_report_key(&cgc, ai->lsasf.agid, 5);
1077 if ((ret = cdo->generic_packet(cdi, &cgc)))
1080 ai->lsasf.asf = buf[7] & 1;
1083 /* LU data receive (LU changes state) */
1084 case DVD_HOST_SEND_CHALLENGE:
1085 cdinfo(CD_DVD, "entering DVD_HOST_SEND_CHALLENGE\n");
1086 setup_send_key(&cgc, ai->hsc.agid, 1);
1088 copy_chal(&buf[4], ai->hsc.chal);
1090 if ((ret = cdo->generic_packet(cdi, &cgc)))
1093 ai->type = DVD_LU_SEND_KEY1;
1096 case DVD_HOST_SEND_KEY2:
1097 cdinfo(CD_DVD, "entering DVD_HOST_SEND_KEY2\n");
1098 setup_send_key(&cgc, ai->hsk.agid, 3);
1100 copy_key(&buf[4], ai->hsk.key);
1102 if ((ret = cdo->generic_packet(cdi, &cgc))) {
1103 ai->type = DVD_AUTH_FAILURE;
1106 ai->type = DVD_AUTH_ESTABLISHED;
1110 case DVD_INVALIDATE_AGID:
1111 cdinfo(CD_DVD, "entering DVD_INVALIDATE_AGID\n");
1112 setup_report_key(&cgc, ai->lsa.agid, 0x3f);
1113 if ((ret = cdo->generic_packet(cdi, &cgc)))
1117 /* Get region settings */
1118 case DVD_LU_SEND_RPC_STATE:
1119 cdinfo(CD_DVD, "entering DVD_LU_SEND_RPC_STATE\n");
1120 setup_report_key(&cgc, 0, 8);
1121 memset(&rpc_state, 0, sizeof(rpc_state_t));
1122 cgc.buffer = (char *) &rpc_state;
1124 if ((ret = cdo->generic_packet(cdi, &cgc)))
1127 ai->lrpcs.type = rpc_state.type_code;
1128 ai->lrpcs.vra = rpc_state.vra;
1129 ai->lrpcs.ucca = rpc_state.ucca;
1130 ai->lrpcs.region_mask = rpc_state.region_mask;
1131 ai->lrpcs.rpc_scheme = rpc_state.rpc_scheme;
1134 /* Set region settings */
1135 case DVD_HOST_SEND_RPC_STATE:
1136 cdinfo(CD_DVD, "entering DVD_HOST_SEND_RPC_STATE\n");
1137 setup_send_key(&cgc, 0, 6);
1139 buf[4] = ai->hrpcs.pdrc;
1141 if ((ret = cdo->generic_packet(cdi, &cgc)))
1146 cdinfo(CD_WARNING, "Invalid DVD key ioctl (%d)\n", ai->type);
1153 static int dvd_read_physical(struct cdrom_device_info *cdi, dvd_struct *s)
1155 unsigned char buf[20], *base;
1156 struct dvd_layer *layer;
1157 struct cdrom_generic_command cgc;
1158 struct cdrom_device_ops *cdo = cdi->ops;
1159 int ret, layer_num = s->physical.layer_num;
1161 if (layer_num >= DVD_LAYERS)
1164 init_cdrom_command(&cgc, buf, sizeof(buf), CGC_DATA_READ);
1165 cgc.cmd[0] = GPCMD_READ_DVD_STRUCTURE;
1166 cgc.cmd[6] = layer_num;
1167 cgc.cmd[7] = s->type;
1168 cgc.cmd[9] = cgc.buflen & 0xff;
1171 * refrain from reporting errors on non-existing layers (mainly)
1175 if ((ret = cdo->generic_packet(cdi, &cgc)))
1179 layer = &s->physical.layer[layer_num];
1182 * place the data... really ugly, but at least we won't have to
1183 * worry about endianess in userspace.
1185 memset(layer, 0, sizeof(*layer));
1186 layer->book_version = base[0] & 0xf;
1187 layer->book_type = base[0] >> 4;
1188 layer->min_rate = base[1] & 0xf;
1189 layer->disc_size = base[1] >> 4;
1190 layer->layer_type = base[2] & 0xf;
1191 layer->track_path = (base[2] >> 4) & 1;
1192 layer->nlayers = (base[2] >> 5) & 3;
1193 layer->track_density = base[3] & 0xf;
1194 layer->linear_density = base[3] >> 4;
1195 layer->start_sector = base[5] << 16 | base[6] << 8 | base[7];
1196 layer->end_sector = base[9] << 16 | base[10] << 8 | base[11];
1197 layer->end_sector_l0 = base[13] << 16 | base[14] << 8 | base[15];
1198 layer->bca = base[16] >> 7;
1203 static int dvd_read_copyright(struct cdrom_device_info *cdi, dvd_struct *s)
1207 struct cdrom_generic_command cgc;
1208 struct cdrom_device_ops *cdo = cdi->ops;
1210 init_cdrom_command(&cgc, buf, sizeof(buf), CGC_DATA_READ);
1211 cgc.cmd[0] = GPCMD_READ_DVD_STRUCTURE;
1212 cgc.cmd[6] = s->copyright.layer_num;
1213 cgc.cmd[7] = s->type;
1214 cgc.cmd[8] = cgc.buflen >> 8;
1215 cgc.cmd[9] = cgc.buflen & 0xff;
1217 if ((ret = cdo->generic_packet(cdi, &cgc)))
1220 s->copyright.cpst = buf[4];
1221 s->copyright.rmi = buf[5];
1226 static int dvd_read_disckey(struct cdrom_device_info *cdi, dvd_struct *s)
1230 struct cdrom_generic_command cgc;
1231 struct cdrom_device_ops *cdo = cdi->ops;
1233 size = sizeof(s->disckey.value) + 4;
1235 if ((buf = (u_char *) kmalloc(size, GFP_KERNEL)) == NULL)
1238 init_cdrom_command(&cgc, buf, size, CGC_DATA_READ);
1239 cgc.cmd[0] = GPCMD_READ_DVD_STRUCTURE;
1240 cgc.cmd[7] = s->type;
1241 cgc.cmd[8] = size >> 8;
1242 cgc.cmd[9] = size & 0xff;
1243 cgc.cmd[10] = s->disckey.agid << 6;
1245 if (!(ret = cdo->generic_packet(cdi, &cgc)))
1246 memcpy(s->disckey.value, &buf[4], sizeof(s->disckey.value));
1252 static int dvd_read_bca(struct cdrom_device_info *cdi, dvd_struct *s)
1255 u_char buf[4 + 188];
1256 struct cdrom_generic_command cgc;
1257 struct cdrom_device_ops *cdo = cdi->ops;
1259 init_cdrom_command(&cgc, buf, sizeof(buf), CGC_DATA_READ);
1260 cgc.cmd[0] = GPCMD_READ_DVD_STRUCTURE;
1261 cgc.cmd[7] = s->type;
1262 cgc.cmd[9] = cgc.buflen & 0xff;
1264 if ((ret = cdo->generic_packet(cdi, &cgc)))
1267 s->bca.len = buf[0] << 8 | buf[1];
1268 if (s->bca.len < 12 || s->bca.len > 188) {
1269 cdinfo(CD_WARNING, "Received invalid BCA length (%d)\n", s->bca.len);
1272 memcpy(s->bca.value, &buf[4], s->bca.len);
1277 static int dvd_read_manufact(struct cdrom_device_info *cdi, dvd_struct *s)
1281 struct cdrom_generic_command cgc;
1282 struct cdrom_device_ops *cdo = cdi->ops;
1284 size = sizeof(s->manufact.value) + 4;
1286 if ((buf = (u_char *) kmalloc(size, GFP_KERNEL)) == NULL)
1289 init_cdrom_command(&cgc, buf, size, CGC_DATA_READ);
1290 cgc.cmd[0] = GPCMD_READ_DVD_STRUCTURE;
1291 cgc.cmd[7] = s->type;
1292 cgc.cmd[8] = size >> 8;
1293 cgc.cmd[9] = size & 0xff;
1295 if ((ret = cdo->generic_packet(cdi, &cgc))) {
1300 s->manufact.len = buf[0] << 8 | buf[1];
1301 if (s->manufact.len < 0 || s->manufact.len > 2048) {
1302 cdinfo(CD_WARNING, "Received invalid manufacture info length"
1303 " (%d)\n", s->bca.len);
1306 memcpy(s->manufact.value, &buf[4], s->manufact.len);
1313 static int dvd_read_struct(struct cdrom_device_info *cdi, dvd_struct *s)
1316 case DVD_STRUCT_PHYSICAL:
1317 return dvd_read_physical(cdi, s);
1319 case DVD_STRUCT_COPYRIGHT:
1320 return dvd_read_copyright(cdi, s);
1322 case DVD_STRUCT_DISCKEY:
1323 return dvd_read_disckey(cdi, s);
1325 case DVD_STRUCT_BCA:
1326 return dvd_read_bca(cdi, s);
1328 case DVD_STRUCT_MANUFACT:
1329 return dvd_read_manufact(cdi, s);
1332 cdinfo(CD_WARNING, ": Invalid DVD structure read requested (%d)\n",
1338 int cdrom_mode_sense(struct cdrom_device_info *cdi,
1339 struct cdrom_generic_command *cgc,
1340 int page_code, int page_control)
1342 struct cdrom_device_ops *cdo = cdi->ops;
1344 memset(cgc->cmd, 0, sizeof(cgc->cmd));
1346 cgc->cmd[0] = GPCMD_MODE_SENSE_10;
1347 cgc->cmd[2] = page_code | (page_control << 6);
1348 cgc->cmd[7] = cgc->buflen >> 8;
1349 cgc->cmd[8] = cgc->buflen & 0xff;
1350 cgc->data_direction = CGC_DATA_READ;
1351 return cdo->generic_packet(cdi, cgc);
1354 int cdrom_mode_select(struct cdrom_device_info *cdi,
1355 struct cdrom_generic_command *cgc)
1357 struct cdrom_device_ops *cdo = cdi->ops;
1359 memset(cgc->cmd, 0, sizeof(cgc->cmd));
1360 memset(cgc->buffer, 0, 2);
1361 cgc->cmd[0] = GPCMD_MODE_SELECT_10;
1362 cgc->cmd[1] = 0x10; /* PF */
1363 cgc->cmd[7] = cgc->buflen >> 8;
1364 cgc->cmd[8] = cgc->buflen & 0xff;
1365 cgc->data_direction = CGC_DATA_WRITE;
1366 return cdo->generic_packet(cdi, cgc);
1369 static int cdrom_read_subchannel(struct cdrom_device_info *cdi,
1370 struct cdrom_subchnl *subchnl, int mcn)
1372 struct cdrom_device_ops *cdo = cdi->ops;
1373 struct cdrom_generic_command cgc;
1377 init_cdrom_command(&cgc, buffer, 16, CGC_DATA_READ);
1378 cgc.cmd[0] = GPCMD_READ_SUBCHANNEL;
1379 cgc.cmd[1] = 2; /* MSF addressing */
1380 cgc.cmd[2] = 0x40; /* request subQ data */
1381 cgc.cmd[3] = mcn ? 2 : 1;
1384 if ((ret = cdo->generic_packet(cdi, &cgc)))
1387 subchnl->cdsc_audiostatus = cgc.buffer[1];
1388 subchnl->cdsc_format = CDROM_MSF;
1389 subchnl->cdsc_ctrl = cgc.buffer[5] & 0xf;
1390 subchnl->cdsc_trk = cgc.buffer[6];
1391 subchnl->cdsc_ind = cgc.buffer[7];
1393 subchnl->cdsc_reladdr.msf.minute = cgc.buffer[13];
1394 subchnl->cdsc_reladdr.msf.second = cgc.buffer[14];
1395 subchnl->cdsc_reladdr.msf.frame = cgc.buffer[15];
1396 subchnl->cdsc_absaddr.msf.minute = cgc.buffer[9];
1397 subchnl->cdsc_absaddr.msf.second = cgc.buffer[10];
1398 subchnl->cdsc_absaddr.msf.frame = cgc.buffer[11];
1404 * Specific READ_10 interface
1406 static int cdrom_read_cd(struct cdrom_device_info *cdi,
1407 struct cdrom_generic_command *cgc, int lba,
1408 int blocksize, int nblocks)
1410 struct cdrom_device_ops *cdo = cdi->ops;
1412 memset(&cgc->cmd, 0, sizeof(cgc->cmd));
1413 cgc->cmd[0] = GPCMD_READ_10;
1414 cgc->cmd[2] = (lba >> 24) & 0xff;
1415 cgc->cmd[3] = (lba >> 16) & 0xff;
1416 cgc->cmd[4] = (lba >> 8) & 0xff;
1417 cgc->cmd[5] = lba & 0xff;
1418 cgc->cmd[6] = (nblocks >> 16) & 0xff;
1419 cgc->cmd[7] = (nblocks >> 8) & 0xff;
1420 cgc->cmd[8] = nblocks & 0xff;
1421 cgc->buflen = blocksize * nblocks;
1422 return cdo->generic_packet(cdi, cgc);
1425 /* very generic interface for reading the various types of blocks */
1426 static int cdrom_read_block(struct cdrom_device_info *cdi,
1427 struct cdrom_generic_command *cgc,
1428 int lba, int nblocks, int format, int blksize)
1430 struct cdrom_device_ops *cdo = cdi->ops;
1432 memset(&cgc->cmd, 0, sizeof(cgc->cmd));
1433 cgc->cmd[0] = GPCMD_READ_CD;
1434 /* expected sector size - cdda,mode1,etc. */
1435 cgc->cmd[1] = format << 2;
1436 /* starting address */
1437 cgc->cmd[2] = (lba >> 24) & 0xff;
1438 cgc->cmd[3] = (lba >> 16) & 0xff;
1439 cgc->cmd[4] = (lba >> 8) & 0xff;
1440 cgc->cmd[5] = lba & 0xff;
1441 /* number of blocks */
1442 cgc->cmd[6] = (nblocks >> 16) & 0xff;
1443 cgc->cmd[7] = (nblocks >> 8) & 0xff;
1444 cgc->cmd[8] = nblocks & 0xff;
1445 cgc->buflen = blksize * nblocks;
1447 /* set the header info returned */
1449 case CD_FRAMESIZE_RAW0 : cgc->cmd[9] = 0x58; break;
1450 case CD_FRAMESIZE_RAW1 : cgc->cmd[9] = 0x78; break;
1451 case CD_FRAMESIZE_RAW : cgc->cmd[9] = 0xf8; break;
1452 default : cgc->cmd[9] = 0x10;
1455 return cdo->generic_packet(cdi, cgc);
1458 /* Just about every imaginable ioctl is supported in the Uniform layer
1459 * these days. ATAPI / SCSI specific code now mainly resides in
1462 int cdrom_ioctl(struct inode *ip, struct file *fp, unsigned int cmd,
1465 kdev_t dev = ip->i_rdev;
1466 struct cdrom_device_info *cdi = cdrom_find_device(dev);
1467 struct cdrom_device_ops *cdo = cdi->ops;
1470 /* the first few commands do not deal with audio drive_info, but
1471 only with routines in cdrom device operations. */
1473 case CDROMMULTISESSION: {
1474 struct cdrom_multisession ms_info;
1475 u_char requested_format;
1476 cdinfo(CD_DO_IOCTL, "entering CDROMMULTISESSION\n");
1477 if (!(cdo->capability & CDC_MULTI_SESSION))
1479 IOCTL_IN(arg, struct cdrom_multisession, ms_info);
1480 requested_format = ms_info.addr_format;
1481 if (!((requested_format == CDROM_MSF) ||
1482 (requested_format == CDROM_LBA)))
1484 ms_info.addr_format = CDROM_LBA;
1485 if ((ret=cdo->get_last_session(cdi, &ms_info)))
1487 sanitize_format(&ms_info.addr, &ms_info.addr_format,
1489 IOCTL_OUT(arg, struct cdrom_multisession, ms_info);
1490 cdinfo(CD_DO_IOCTL, "CDROMMULTISESSION successful\n");
1495 cdinfo(CD_DO_IOCTL, "entering CDROMEJECT\n");
1496 if (!CDROM_CAN(CDC_OPEN_TRAY))
1498 if (cdi->use_count != 1 || keeplocked)
1500 if (CDROM_CAN(CDC_LOCK))
1501 if ((ret=cdo->lock_door(cdi, 0)))
1504 return cdo->tray_move(cdi, 1);
1507 case CDROMCLOSETRAY: {
1508 cdinfo(CD_DO_IOCTL, "entering CDROMCLOSETRAY\n");
1509 if (!CDROM_CAN(CDC_CLOSE_TRAY))
1511 return cdo->tray_move(cdi, 0);
1514 case CDROMEJECT_SW: {
1515 cdinfo(CD_DO_IOCTL, "entering CDROMEJECT_SW\n");
1516 if (!CDROM_CAN(CDC_OPEN_TRAY))
1520 cdi->options &= ~(CDO_AUTO_CLOSE | CDO_AUTO_EJECT);
1522 cdi->options |= CDO_AUTO_CLOSE | CDO_AUTO_EJECT;
1526 case CDROM_MEDIA_CHANGED: {
1527 struct cdrom_changer_info info;
1529 cdinfo(CD_DO_IOCTL, "entering CDROM_MEDIA_CHANGED\n");
1530 if (!CDROM_CAN(CDC_MEDIA_CHANGED))
1533 /* cannot select disc or select current disc */
1534 if (!CDROM_CAN(CDC_SELECT_DISC) || arg == CDSL_CURRENT)
1535 return media_changed(cdi, 1);
1537 if ((unsigned int)arg >= cdi->capacity)
1540 if ((ret = cdrom_read_mech_status(cdi, &info)))
1543 return info.slots[arg].change;
1546 case CDROM_SET_OPTIONS: {
1547 cdinfo(CD_DO_IOCTL, "entering CDROM_SET_OPTIONS\n");
1548 /* options need to be in sync with capability. too late for
1549 that, so we have to check each one separately... */
1551 case CDO_USE_FFLAGS:
1552 case CDO_CHECK_TYPE:
1555 if (!CDROM_CAN(CDC_LOCK))
1559 return cdi->options;
1560 /* default is basically CDO_[AUTO_CLOSE|AUTO_EJECT] */
1562 if (!CDROM_CAN(arg))
1565 cdi->options |= (int) arg;
1566 return cdi->options;
1569 case CDROM_CLEAR_OPTIONS: {
1570 cdinfo(CD_DO_IOCTL, "entering CDROM_CLEAR_OPTIONS\n");
1571 cdi->options &= ~(int) arg;
1572 return cdi->options;
1575 case CDROM_SELECT_SPEED: {
1576 cdinfo(CD_DO_IOCTL, "entering CDROM_SELECT_SPEED\n");
1577 if (!CDROM_CAN(CDC_SELECT_SPEED))
1579 return cdo->select_speed(cdi, arg);
1582 case CDROM_SELECT_DISC: {
1583 cdinfo(CD_DO_IOCTL, "entering CDROM_SELECT_DISC\n");
1584 if (!CDROM_CAN(CDC_SELECT_DISC))
1587 if ((arg != CDSL_CURRENT) && (arg != CDSL_NONE))
1588 if ((int)arg >= cdi->capacity)
1591 /* cdo->select_disc is a hook to allow a driver-specific
1592 * way of seleting disc. However, since there is no
1593 * equiv hook for cdrom_slot_status this may not
1594 * actually be useful...
1596 if (cdo->select_disc != NULL)
1597 return cdo->select_disc(cdi, arg);
1599 /* no driver specific select_disc(), call our own */
1600 cdinfo(CD_CHANGER, "Using generic cdrom_select_disc()\n");
1601 return cdrom_select_disc(cdi, arg);
1605 if (!capable(CAP_SYS_ADMIN))
1607 cdinfo(CD_DO_IOCTL, "entering CDROM_RESET\n");
1608 if (!CDROM_CAN(CDC_RESET))
1610 return cdo->reset(cdi);
1613 case CDROM_LOCKDOOR: {
1614 cdinfo(CD_DO_IOCTL, "%socking door.\n", arg ? "L" : "Unl");
1615 if (!CDROM_CAN(CDC_LOCK))
1616 return -EDRIVE_CANT_DO_THIS;
1617 keeplocked = arg ? 1 : 0;
1618 /* don't unlock the door on multiple opens,but allow root
1620 if ((cdi->use_count != 1) && !arg && !capable(CAP_SYS_ADMIN))
1622 return cdo->lock_door(cdi, arg);
1626 if (!capable(CAP_SYS_ADMIN))
1628 cdinfo(CD_DO_IOCTL, "%sabling debug.\n", arg ? "En" : "Dis");
1629 debug = arg ? 1 : 0;
1633 case CDROM_GET_CAPABILITY: {
1634 cdinfo(CD_DO_IOCTL, "entering CDROM_GET_CAPABILITY\n");
1635 return (cdo->capability & ~cdi->mask);
1638 /* The following function is implemented, although very few audio
1639 * discs give Universal Product Code information, which should just be
1640 * the Medium Catalog Number on the box. Note, that the way the code
1641 * is written on the CD is /not/ uniform across all discs!
1643 case CDROM_GET_MCN: {
1644 struct cdrom_mcn mcn;
1645 cdinfo(CD_DO_IOCTL, "entering CDROM_GET_MCN\n");
1646 if (!(cdo->capability & CDC_MCN))
1648 if ((ret=cdo->get_mcn(cdi, &mcn)))
1650 IOCTL_OUT(arg, struct cdrom_mcn, mcn);
1651 cdinfo(CD_DO_IOCTL, "CDROM_GET_MCN successful\n");
1655 case CDROM_DRIVE_STATUS: {
1656 cdinfo(CD_DO_IOCTL, "entering CDROM_DRIVE_STATUS\n");
1657 if (!(cdo->capability & CDC_DRIVE_STATUS))
1659 if (!CDROM_CAN(CDC_SELECT_DISC))
1660 return cdo->drive_status(cdi, CDSL_CURRENT);
1661 if ((arg == CDSL_CURRENT) || (arg == CDSL_NONE))
1662 return cdo->drive_status(cdi, CDSL_CURRENT);
1663 if (((int)arg >= cdi->capacity))
1665 return cdrom_slot_status(cdi, arg);
1668 /* Ok, this is where problems start. The current interface for the
1669 CDROM_DISC_STATUS ioctl is flawed. It makes the false assumption
1670 that CDs are all CDS_DATA_1 or all CDS_AUDIO, etc. Unfortunatly,
1671 while this is often the case, it is also very common for CDs to
1672 have some tracks with data, and some tracks with audio. Just
1673 because I feel like it, I declare the following to be the best
1674 way to cope. If the CD has ANY data tracks on it, it will be
1675 returned as a data CD. If it has any XA tracks, I will return
1676 it as that. Now I could simplify this interface by combining these
1677 returns with the above, but this more clearly demonstrates
1678 the problem with the current interface. Too bad this wasn't
1679 designed to use bitmasks... -Erik
1681 Well, now we have the option CDS_MIXED: a mixed-type CD.
1682 User level programmers might feel the ioctl is not very useful.
1685 case CDROM_DISC_STATUS: {
1687 cdinfo(CD_DO_IOCTL, "entering CDROM_DISC_STATUS\n");
1688 cdrom_count_tracks(cdi, &tracks);
1690 return(tracks.error);
1692 /* Policy mode on */
1693 if (tracks.audio > 0) {
1694 if (tracks.data==0 && tracks.cdi==0 && tracks.xa==0)
1699 if (tracks.cdi > 0) return CDS_XA_2_2;
1700 if (tracks.xa > 0) return CDS_XA_2_1;
1701 if (tracks.data > 0) return CDS_DATA_1;
1702 /* Policy mode off */
1704 cdinfo(CD_WARNING,"This disc doesn't have any tracks I recognize!\n");
1708 case CDROM_CHANGER_NSLOTS: {
1709 cdinfo(CD_DO_IOCTL, "entering CDROM_CHANGER_NSLOTS\n");
1710 return cdi->capacity;
1714 /* use the ioctls that are implemented through the generic_packet()
1715 interface. this may look at bit funny, but if -ENOTTY is
1716 returned that particular ioctl is not implemented and we
1717 let it go through the device specific ones. */
1718 if (CDROM_CAN(CDC_GENERIC_PACKET)) {
1719 ret = mmc_ioctl(cdi, cmd, arg);
1720 if (ret != -ENOTTY) {
1725 /* note: most of the cdinfo() calls are commented out here,
1726 because they fill up the sys log when CD players poll
1729 case CDROMSUBCHNL: {
1730 struct cdrom_subchnl q;
1731 u_char requested, back;
1732 if (!CDROM_CAN(CDC_PLAY_AUDIO))
1734 /* cdinfo(CD_DO_IOCTL,"entering CDROMSUBCHNL\n");*/
1735 IOCTL_IN(arg, struct cdrom_subchnl, q);
1736 requested = q.cdsc_format;
1737 if (!((requested == CDROM_MSF) ||
1738 (requested == CDROM_LBA)))
1740 q.cdsc_format = CDROM_MSF;
1741 if ((ret=cdo->audio_ioctl(cdi, cmd, &q)))
1743 back = q.cdsc_format; /* local copy */
1744 sanitize_format(&q.cdsc_absaddr, &back, requested);
1745 sanitize_format(&q.cdsc_reladdr, &q.cdsc_format, requested);
1746 IOCTL_OUT(arg, struct cdrom_subchnl, q);
1747 /* cdinfo(CD_DO_IOCTL, "CDROMSUBCHNL successful\n"); */
1750 case CDROMREADTOCHDR: {
1751 struct cdrom_tochdr header;
1752 if (!CDROM_CAN(CDC_PLAY_AUDIO))
1754 /* cdinfo(CD_DO_IOCTL, "entering CDROMREADTOCHDR\n"); */
1755 IOCTL_IN(arg, struct cdrom_tochdr, header);
1756 if ((ret=cdo->audio_ioctl(cdi, cmd, &header)))
1758 IOCTL_OUT(arg, struct cdrom_tochdr, header);
1759 /* cdinfo(CD_DO_IOCTL, "CDROMREADTOCHDR successful\n"); */
1762 case CDROMREADTOCENTRY: {
1763 struct cdrom_tocentry entry;
1764 u_char requested_format;
1765 if (!CDROM_CAN(CDC_PLAY_AUDIO))
1767 /* cdinfo(CD_DO_IOCTL, "entering CDROMREADTOCENTRY\n"); */
1768 IOCTL_IN(arg, struct cdrom_tocentry, entry);
1769 requested_format = entry.cdte_format;
1770 if (!((requested_format == CDROM_MSF) ||
1771 (requested_format == CDROM_LBA)))
1773 /* make interface to low-level uniform */
1774 entry.cdte_format = CDROM_MSF;
1775 if ((ret=cdo->audio_ioctl(cdi, cmd, &entry)))
1777 sanitize_format(&entry.cdte_addr,
1778 &entry.cdte_format, requested_format);
1779 IOCTL_OUT(arg, struct cdrom_tocentry, entry);
1780 /* cdinfo(CD_DO_IOCTL, "CDROMREADTOCENTRY successful\n"); */
1783 case CDROMPLAYMSF: {
1784 struct cdrom_msf msf;
1785 if (!CDROM_CAN(CDC_PLAY_AUDIO))
1787 cdinfo(CD_DO_IOCTL, "entering CDROMPLAYMSF\n");
1788 IOCTL_IN(arg, struct cdrom_msf, msf);
1789 return cdo->audio_ioctl(cdi, cmd, &msf);
1791 case CDROMPLAYTRKIND: {
1793 if (!CDROM_CAN(CDC_PLAY_AUDIO))
1795 cdinfo(CD_DO_IOCTL, "entering CDROMPLAYTRKIND\n");
1796 IOCTL_IN(arg, struct cdrom_ti, ti);
1798 return cdo->audio_ioctl(cdi, cmd, &ti);
1800 case CDROMVOLCTRL: {
1801 struct cdrom_volctrl volume;
1802 if (!CDROM_CAN(CDC_PLAY_AUDIO))
1804 cdinfo(CD_DO_IOCTL, "entering CDROMVOLCTRL\n");
1805 IOCTL_IN(arg, struct cdrom_volctrl, volume);
1806 return cdo->audio_ioctl(cdi, cmd, &volume);
1808 case CDROMVOLREAD: {
1809 struct cdrom_volctrl volume;
1810 if (!CDROM_CAN(CDC_PLAY_AUDIO))
1812 cdinfo(CD_DO_IOCTL, "entering CDROMVOLREAD\n");
1813 if ((ret=cdo->audio_ioctl(cdi, cmd, &volume)))
1815 IOCTL_OUT(arg, struct cdrom_volctrl, volume);
1822 if (!CDROM_CAN(CDC_PLAY_AUDIO))
1824 cdinfo(CD_DO_IOCTL, "doing audio ioctl (start/stop/pause/resume)\n");
1826 return cdo->audio_ioctl(cdi, cmd, NULL);
1830 /* do the device specific ioctls */
1831 if (CDROM_CAN(CDC_IOCTLS))
1832 return cdo->dev_ioctl(cdi, cmd, arg);
1838 int msf_to_lba(char m, char s, char f)
1840 return (((m * CD_SECS) + s) * CD_FRAMES + f) - CD_MSF_OFFSET;
1844 * Required when we need to use READ_10 to issue other than 2048 block
1847 static int cdrom_switch_blocksize(struct cdrom_device_info *cdi, int size)
1849 struct cdrom_device_ops *cdo = cdi->ops;
1850 struct cdrom_generic_command cgc;
1851 struct modesel_head mh;
1853 memset(&mh, 0, sizeof(mh));
1854 mh.block_desc_length = 0x08;
1855 mh.block_length_med = (size >> 8) & 0xff;
1856 mh.block_length_lo = size & 0xff;
1858 memset(&cgc, 0, sizeof(cgc));
1860 cgc.cmd[1] = 1 << 4;
1862 cgc.buflen = sizeof(mh);
1863 cgc.buffer = (char *) &mh;
1864 cgc.data_direction = CGC_DATA_WRITE;
1865 mh.block_desc_length = 0x08;
1866 mh.block_length_med = (size >> 8) & 0xff;
1867 mh.block_length_lo = size & 0xff;
1869 return cdo->generic_packet(cdi, &cgc);
1872 static int cdrom_do_cmd(struct cdrom_device_info *cdi,
1873 struct cdrom_generic_command *cgc)
1875 struct request_sense *usense, sense;
1876 unsigned char *ubuf;
1879 if (cgc->data_direction == CGC_DATA_UNKNOWN)
1882 if (cgc->buflen < 0 || cgc->buflen >= 131072)
1885 usense = cgc->sense;
1886 cgc->sense = &sense;
1887 if (usense && !access_ok(VERIFY_WRITE, usense, sizeof(*usense))) {
1892 if (cgc->data_direction == CGC_DATA_READ ||
1893 cgc->data_direction == CGC_DATA_WRITE) {
1894 cgc->buffer = kmalloc(cgc->buflen, GFP_KERNEL);
1895 if (cgc->buffer == NULL)
1900 if (cgc->data_direction == CGC_DATA_READ) {
1901 if (!access_ok(VERIFY_READ, ubuf, cgc->buflen)) {
1905 } else if (cgc->data_direction == CGC_DATA_WRITE) {
1906 if (copy_from_user(cgc->buffer, ubuf, cgc->buflen)) {
1912 ret = cdi->ops->generic_packet(cdi, cgc);
1913 __copy_to_user(usense, cgc->sense, sizeof(*usense));
1914 if (!ret && cgc->data_direction == CGC_DATA_READ)
1915 __copy_to_user(ubuf, cgc->buffer, cgc->buflen);
1916 if (cgc->data_direction == CGC_DATA_READ ||
1917 cgc->data_direction == CGC_DATA_WRITE) {
1923 static int mmc_ioctl(struct cdrom_device_info *cdi, unsigned int cmd,
1926 struct cdrom_device_ops *cdo = cdi->ops;
1927 struct cdrom_generic_command cgc;
1928 struct request_sense sense;
1929 kdev_t dev = cdi->dev;
1933 memset(&cgc, 0, sizeof(cgc));
1935 /* build a unified command and queue it through
1936 cdo->generic_packet() */
1939 case CDROMREADMODE1:
1940 case CDROMREADMODE2: {
1941 struct cdrom_msf msf;
1942 int blocksize = 0, format = 0, lba;
1946 blocksize = CD_FRAMESIZE_RAW;
1948 case CDROMREADMODE1:
1949 blocksize = CD_FRAMESIZE;
1952 case CDROMREADMODE2:
1953 blocksize = CD_FRAMESIZE_RAW0;
1956 IOCTL_IN(arg, struct cdrom_msf, msf);
1957 lba = msf_to_lba(msf.cdmsf_min0,msf.cdmsf_sec0,msf.cdmsf_frame0);
1958 /* FIXME: we need upper bound checking, too!! */
1961 cgc.buffer = (char *) kmalloc(blocksize, GFP_KERNEL);
1962 if (cgc.buffer == NULL)
1964 memset(&sense, 0, sizeof(sense));
1966 cgc.data_direction = CGC_DATA_READ;
1967 ret = cdrom_read_block(cdi, &cgc, lba, 1, format, blocksize);
1968 if (ret && sense.sense_key==0x05 && sense.asc==0x20 && sense.ascq==0x00) {
1970 * SCSI-II devices are not required to support
1971 * READ_CD, so let's try switching block size
1973 /* FIXME: switch back again... */
1974 if ((ret = cdrom_switch_blocksize(cdi, blocksize))) {
1979 ret = cdrom_read_cd(cdi, &cgc, lba, blocksize, 1);
1980 ret |= cdrom_switch_blocksize(cdi, blocksize);
1982 if (!ret && copy_to_user((char *)arg, cgc.buffer, blocksize))
1987 case CDROMREADAUDIO: {
1988 struct cdrom_read_audio ra;
1991 IOCTL_IN(arg, struct cdrom_read_audio, ra);
1993 if (ra.addr_format == CDROM_MSF)
1994 lba = msf_to_lba(ra.addr.msf.minute,
1997 else if (ra.addr_format == CDROM_LBA)
2002 /* FIXME: we need upper bound checking, too!! */
2003 if (lba < 0 || ra.nframes <= 0)
2007 * start with will ra.nframes size, back down if alloc fails
2011 cgc.buffer = kmalloc(CD_FRAMESIZE_RAW * nr, GFP_KERNEL);
2021 if (!access_ok(VERIFY_WRITE, ra.buf, ra.nframes*CD_FRAMESIZE_RAW)) {
2025 cgc.data_direction = CGC_DATA_READ;
2026 while (ra.nframes > 0) {
2027 if (nr > ra.nframes)
2030 ret = cdrom_read_block(cdi, &cgc, lba, nr, 1, CD_FRAMESIZE_RAW);
2033 __copy_to_user(ra.buf, cgc.buffer, CD_FRAMESIZE_RAW*nr);
2034 ra.buf += CD_FRAMESIZE_RAW * nr;
2041 case CDROMSUBCHNL: {
2042 struct cdrom_subchnl q;
2043 u_char requested, back;
2044 IOCTL_IN(arg, struct cdrom_subchnl, q);
2045 requested = q.cdsc_format;
2046 if (!((requested == CDROM_MSF) ||
2047 (requested == CDROM_LBA)))
2049 q.cdsc_format = CDROM_MSF;
2050 if ((ret = cdrom_read_subchannel(cdi, &q, 0)))
2052 back = q.cdsc_format; /* local copy */
2053 sanitize_format(&q.cdsc_absaddr, &back, requested);
2054 sanitize_format(&q.cdsc_reladdr, &q.cdsc_format, requested);
2055 IOCTL_OUT(arg, struct cdrom_subchnl, q);
2056 /* cdinfo(CD_DO_IOCTL, "CDROMSUBCHNL successful\n"); */
2059 case CDROMPLAYMSF: {
2060 struct cdrom_msf msf;
2061 cdinfo(CD_DO_IOCTL, "entering CDROMPLAYMSF\n");
2062 IOCTL_IN(arg, struct cdrom_msf, msf);
2063 cgc.cmd[0] = GPCMD_PLAY_AUDIO_MSF;
2064 cgc.cmd[3] = msf.cdmsf_min0;
2065 cgc.cmd[4] = msf.cdmsf_sec0;
2066 cgc.cmd[5] = msf.cdmsf_frame0;
2067 cgc.cmd[6] = msf.cdmsf_min1;
2068 cgc.cmd[7] = msf.cdmsf_sec1;
2069 cgc.cmd[8] = msf.cdmsf_frame1;
2070 cgc.data_direction = CGC_DATA_NONE;
2071 return cdo->generic_packet(cdi, &cgc);
2073 case CDROMPLAYBLK: {
2074 struct cdrom_blk blk;
2075 cdinfo(CD_DO_IOCTL, "entering CDROMPLAYBLK\n");
2076 IOCTL_IN(arg, struct cdrom_blk, blk);
2077 cgc.cmd[0] = GPCMD_PLAY_AUDIO_10;
2078 cgc.cmd[2] = (blk.from >> 24) & 0xff;
2079 cgc.cmd[3] = (blk.from >> 16) & 0xff;
2080 cgc.cmd[4] = (blk.from >> 8) & 0xff;
2081 cgc.cmd[5] = blk.from & 0xff;
2082 cgc.cmd[7] = (blk.len >> 8) & 0xff;
2083 cgc.cmd[8] = blk.len & 0xff;
2084 cgc.data_direction = CGC_DATA_NONE;
2085 return cdo->generic_packet(cdi, &cgc);
2088 case CDROMVOLREAD: {
2089 struct cdrom_volctrl volctrl;
2091 unsigned short offset;
2092 cdinfo(CD_DO_IOCTL, "entering CDROMVOLUME\n");
2094 IOCTL_IN(arg, struct cdrom_volctrl, volctrl);
2096 cgc.buffer = buffer;
2098 if ((ret = cdrom_mode_sense(cdi, &cgc, GPMODE_AUDIO_CTL_PAGE, 0)))
2101 /* some drives have longer pages, adjust and reread. */
2102 if (buffer[1] > cgc.buflen) {
2103 cgc.buflen = buffer[1] + 2;
2104 if ((ret = cdrom_mode_sense(cdi, &cgc,
2105 GPMODE_AUDIO_CTL_PAGE, 0)))
2109 /* get the offset from the length of the page. length
2110 is measure from byte 2 an on, thus the 14. */
2111 offset = buffer[1] - 14;
2113 /* now we have the current volume settings. if it was only
2114 a CDROMVOLREAD, return these values */
2115 if (cmd == CDROMVOLREAD) {
2116 volctrl.channel0 = buffer[offset+9];
2117 volctrl.channel1 = buffer[offset+11];
2118 volctrl.channel2 = buffer[offset+13];
2119 volctrl.channel3 = buffer[offset+15];
2120 IOCTL_OUT(arg, struct cdrom_volctrl, volctrl);
2124 /* get the volume mask */
2126 if ((ret = cdrom_mode_sense(cdi, &cgc,
2127 GPMODE_AUDIO_CTL_PAGE, 1)))
2130 buffer[offset+9] = volctrl.channel0 & mask[offset+9];
2131 buffer[offset+11] = volctrl.channel1 & mask[offset+11];
2132 buffer[offset+13] = volctrl.channel2 & mask[offset+13];
2133 buffer[offset+15] = volctrl.channel3 & mask[offset+15];
2136 cgc.buffer = buffer;
2137 return cdrom_mode_select(cdi, &cgc);
2142 cdinfo(CD_DO_IOCTL, "entering CDROMSTART/CDROMSTOP\n");
2143 cgc.cmd[0] = GPCMD_START_STOP_UNIT;
2145 cgc.cmd[4] = (cmd == CDROMSTART) ? 1 : 0;
2146 cgc.data_direction = CGC_DATA_NONE;
2147 return cdo->generic_packet(cdi, &cgc);
2152 cdinfo(CD_DO_IOCTL, "entering CDROMPAUSE/CDROMRESUME\n");
2153 cgc.cmd[0] = GPCMD_PAUSE_RESUME;
2154 cgc.cmd[8] = (cmd == CDROMRESUME) ? 1 : 0;
2155 cgc.data_direction = CGC_DATA_NONE;
2156 return cdo->generic_packet(cdi, &cgc);
2159 case DVD_READ_STRUCT: {
2161 int size = sizeof(dvd_struct);
2162 if (!CDROM_CAN(CDC_DVD))
2164 if ((s = (dvd_struct *) kmalloc(size, GFP_KERNEL)) == NULL)
2166 cdinfo(CD_DO_IOCTL, "entering DVD_READ_STRUCT\n");
2167 if (copy_from_user(s, (dvd_struct *)arg, size)) {
2171 if ((ret = dvd_read_struct(cdi, s))) {
2175 if (copy_to_user((dvd_struct *)arg, s, size))
2183 if (!CDROM_CAN(CDC_DVD))
2185 cdinfo(CD_DO_IOCTL, "entering DVD_AUTH\n");
2186 IOCTL_IN(arg, dvd_authinfo, ai);
2187 if ((ret = dvd_do_auth (cdi, &ai)))
2189 IOCTL_OUT(arg, dvd_authinfo, ai);
2193 case CDROM_SEND_PACKET: {
2194 if (!CDROM_CAN(CDC_GENERIC_PACKET))
2196 cdinfo(CD_DO_IOCTL, "entering CDROM_SEND_PACKET\n");
2197 IOCTL_IN(arg, struct cdrom_generic_command, cgc);
2198 return cdrom_do_cmd(cdi, &cgc);
2200 case CDROM_NEXT_WRITABLE: {
2202 cdinfo(CD_DO_IOCTL, "entering CDROM_NEXT_WRITABLE\n");
2203 if ((ret = cdrom_get_next_writable(dev, &next)))
2205 IOCTL_OUT(arg, long, next);
2208 case CDROM_LAST_WRITTEN: {
2210 cdinfo(CD_DO_IOCTL, "entering CDROM_LAST_WRITTEN\n");
2211 if ((ret = cdrom_get_last_written(dev, &last)))
2213 IOCTL_OUT(arg, long, last);
2221 int cdrom_get_track_info(kdev_t dev, __u16 track, __u8 type,
2222 track_information *ti)
2224 struct cdrom_device_info *cdi = cdrom_find_device(dev);
2225 struct cdrom_device_ops *cdo = cdi->ops;
2226 struct cdrom_generic_command cgc;
2229 init_cdrom_command(&cgc, ti, 8, CGC_DATA_READ);
2230 cgc.cmd[0] = GPCMD_READ_TRACK_RZONE_INFO;
2231 cgc.cmd[1] = type & 3;
2232 cgc.cmd[4] = (track & 0xff00) >> 8;
2233 cgc.cmd[5] = track & 0xff;
2237 if ((ret = cdo->generic_packet(cdi, &cgc)))
2240 cgc.buflen = be16_to_cpu(ti->track_information_length) +
2241 sizeof(ti->track_information_length);
2243 if (cgc.buflen > sizeof(track_information))
2244 cgc.buflen = sizeof(track_information);
2246 cgc.cmd[8] = cgc.buflen;
2247 return cdo->generic_packet(cdi, &cgc);
2250 /* requires CD R/RW */
2251 int cdrom_get_disc_info(kdev_t dev, disc_information *di)
2253 struct cdrom_device_info *cdi = cdrom_find_device(dev);
2254 struct cdrom_device_ops *cdo = cdi->ops;
2255 struct cdrom_generic_command cgc;
2258 /* set up command and get the disc info */
2259 init_cdrom_command(&cgc, di, sizeof(*di), CGC_DATA_READ);
2260 cgc.cmd[0] = GPCMD_READ_DISC_INFO;
2261 cgc.cmd[8] = cgc.buflen = 2;
2264 if ((ret = cdo->generic_packet(cdi, &cgc)))
2267 /* not all drives have the same disc_info length, so requeue
2268 * packet with the length the drive tells us it can supply
2270 cgc.buflen = be16_to_cpu(di->disc_information_length) +
2271 sizeof(di->disc_information_length);
2273 if (cgc.buflen > sizeof(disc_information))
2274 cgc.buflen = sizeof(disc_information);
2276 cgc.cmd[8] = cgc.buflen;
2277 return cdo->generic_packet(cdi, &cgc);
2281 /* return the last written block on the CD-R media. this is for the udf
2283 int cdrom_get_last_written(kdev_t dev, long *last_written)
2285 struct cdrom_device_info *cdi = cdrom_find_device(dev);
2286 struct cdrom_tocentry toc;
2287 disc_information di;
2288 track_information ti;
2292 if (!CDROM_CAN(CDC_GENERIC_PACKET))
2295 if ((ret = cdrom_get_disc_info(dev, &di)))
2298 last_track = (di.last_track_msb << 8) | di.last_track_lsb;
2299 if ((ret = cdrom_get_track_info(dev, last_track, 1, &ti)))
2302 /* if this track is blank, try the previous. */
2305 if ((ret = cdrom_get_track_info(dev, last_track, 1, &ti)))
2309 /* if last recorded field is valid, return it. */
2311 *last_written = be32_to_cpu(ti.last_rec_address);
2313 /* make it up instead */
2314 *last_written = be32_to_cpu(ti.track_start) +
2315 be32_to_cpu(ti.track_size);
2317 *last_written -= (be32_to_cpu(ti.free_blocks) + 7);
2321 /* this is where we end up if the drive either can't do a
2322 GPCMD_READ_DISC_INFO or GPCMD_READ_TRACK_RZONE_INFO or if
2323 it fails. then we return the toc contents. */
2325 toc.cdte_format = CDROM_MSF;
2326 toc.cdte_track = CDROM_LEADOUT;
2327 if (cdi->ops->audio_ioctl(cdi, CDROMREADTOCENTRY, &toc))
2329 sanitize_format(&toc.cdte_addr, &toc.cdte_format, CDROM_LBA);
2330 *last_written = toc.cdte_addr.lba;
2334 /* return the next writable block. also for udf file system. */
2335 int cdrom_get_next_writable(kdev_t dev, long *next_writable)
2337 struct cdrom_device_info *cdi = cdrom_find_device(dev);
2338 disc_information di;
2339 track_information ti;
2343 if (!CDROM_CAN(CDC_GENERIC_PACKET))
2344 goto use_last_written;
2346 if ((ret = cdrom_get_disc_info(dev, &di)))
2347 goto use_last_written;
2349 last_track = (di.last_track_msb << 8) | di.last_track_lsb;
2350 if ((ret = cdrom_get_track_info(dev, last_track, 1, &ti)))
2351 goto use_last_written;
2353 /* if this track is blank, try the previous. */
2356 if ((ret = cdrom_get_track_info(dev, last_track, 1, &ti)))
2357 goto use_last_written;
2360 /* if next recordable address field is valid, use it. */
2362 *next_writable = be32_to_cpu(ti.next_writable);
2364 goto use_last_written;
2369 if ((ret = cdrom_get_last_written(dev, next_writable))) {
2373 *next_writable += 7;
2378 EXPORT_SYMBOL(cdrom_get_disc_info);
2379 EXPORT_SYMBOL(cdrom_get_track_info);
2380 EXPORT_SYMBOL(cdrom_get_next_writable);
2381 EXPORT_SYMBOL(cdrom_get_last_written);
2382 EXPORT_SYMBOL(cdrom_count_tracks);
2383 EXPORT_SYMBOL(register_cdrom);
2384 EXPORT_SYMBOL(unregister_cdrom);
2385 EXPORT_SYMBOL(cdrom_open);
2386 EXPORT_SYMBOL(cdrom_release);
2387 EXPORT_SYMBOL(cdrom_ioctl);
2388 EXPORT_SYMBOL(cdrom_media_changed);
2389 EXPORT_SYMBOL(cdrom_number_of_slots);
2390 EXPORT_SYMBOL(cdrom_select_disc);
2391 EXPORT_SYMBOL(cdrom_mode_select);
2392 EXPORT_SYMBOL(cdrom_mode_sense);
2393 EXPORT_SYMBOL(init_cdrom_command);
2394 EXPORT_SYMBOL(cdrom_find_device);
2396 #ifdef CONFIG_SYSCTL
2398 #define CDROM_STR_SIZE 1000
2400 struct cdrom_sysctl_settings {
2401 char info[CDROM_STR_SIZE]; /* general info */
2402 int autoclose; /* close tray upon mount, etc */
2403 int autoeject; /* eject on umount */
2404 int debug; /* turn on debugging messages */
2405 int lock; /* lock the door on device open */
2406 int check; /* check media type */
2407 } cdrom_sysctl_settings;
2409 int cdrom_sysctl_info(ctl_table *ctl, int write, struct file * filp,
2410 void *buffer, size_t *lenp)
2413 struct cdrom_device_info *cdi;
2414 char *info = cdrom_sysctl_settings.info;
2416 if (!*lenp || (filp->f_pos && !write)) {
2421 pos = sprintf(info, "CD-ROM information, " VERSION "\n");
2423 pos += sprintf(info+pos, "\ndrive name:\t");
2424 for (cdi=topCdromPtr;cdi!=NULL;cdi=cdi->next)
2425 pos += sprintf(info+pos, "\t%s", cdi->name);
2427 pos += sprintf(info+pos, "\ndrive speed:\t");
2428 for (cdi=topCdromPtr;cdi!=NULL;cdi=cdi->next)
2429 pos += sprintf(info+pos, "\t%d", cdi->speed);
2431 pos += sprintf(info+pos, "\ndrive # of slots:");
2432 for (cdi=topCdromPtr;cdi!=NULL;cdi=cdi->next)
2433 pos += sprintf(info+pos, "\t%d", cdi->capacity);
2435 pos += sprintf(info+pos, "\nCan close tray:\t");
2436 for (cdi=topCdromPtr;cdi!=NULL;cdi=cdi->next)
2437 pos += sprintf(info+pos, "\t%d", CDROM_CAN(CDC_CLOSE_TRAY) != 0);
2439 pos += sprintf(info+pos, "\nCan open tray:\t");
2440 for (cdi=topCdromPtr;cdi!=NULL;cdi=cdi->next)
2441 pos += sprintf(info+pos, "\t%d", CDROM_CAN(CDC_OPEN_TRAY) != 0);
2443 pos += sprintf(info+pos, "\nCan lock tray:\t");
2444 for (cdi=topCdromPtr;cdi!=NULL;cdi=cdi->next)
2445 pos += sprintf(info+pos, "\t%d", CDROM_CAN(CDC_LOCK) != 0);
2447 pos += sprintf(info+pos, "\nCan change speed:");
2448 for (cdi=topCdromPtr;cdi!=NULL;cdi=cdi->next)
2449 pos += sprintf(info+pos, "\t%d", CDROM_CAN(CDC_SELECT_SPEED) != 0);
2451 pos += sprintf(info+pos, "\nCan select disk:");
2452 for (cdi=topCdromPtr;cdi!=NULL;cdi=cdi->next)
2453 pos += sprintf(info+pos, "\t%d", CDROM_CAN(CDC_SELECT_DISC) != 0);
2455 pos += sprintf(info+pos, "\nCan read multisession:");
2456 for (cdi=topCdromPtr;cdi!=NULL;cdi=cdi->next)
2457 pos += sprintf(info+pos, "\t%d", CDROM_CAN(CDC_MULTI_SESSION) != 0);
2459 pos += sprintf(info+pos, "\nCan read MCN:\t");
2460 for (cdi=topCdromPtr;cdi!=NULL;cdi=cdi->next)
2461 pos += sprintf(info+pos, "\t%d", CDROM_CAN(CDC_MCN) != 0);
2463 pos += sprintf(info+pos, "\nReports media changed:");
2464 for (cdi=topCdromPtr;cdi!=NULL;cdi=cdi->next)
2465 pos += sprintf(info+pos, "\t%d", CDROM_CAN(CDC_MEDIA_CHANGED) != 0);
2467 pos += sprintf(info+pos, "\nCan play audio:\t");
2468 for (cdi=topCdromPtr;cdi!=NULL;cdi=cdi->next)
2469 pos += sprintf(info+pos, "\t%d", CDROM_CAN(CDC_PLAY_AUDIO) != 0);
2471 pos += sprintf(info+pos, "\nCan write CD-R:\t");
2472 for (cdi=topCdromPtr;cdi!=NULL;cdi=cdi->next)
2473 pos += sprintf(info+pos, "\t%d", CDROM_CAN(CDC_CD_R) != 0);
2475 pos += sprintf(info+pos, "\nCan write CD-RW:");
2476 for (cdi=topCdromPtr;cdi!=NULL;cdi=cdi->next)
2477 pos += sprintf(info+pos, "\t%d", CDROM_CAN(CDC_CD_RW) != 0);
2479 pos += sprintf(info+pos, "\nCan read DVD:\t");
2480 for (cdi=topCdromPtr;cdi!=NULL;cdi=cdi->next)
2481 pos += sprintf(info+pos, "\t%d", CDROM_CAN(CDC_DVD) != 0);
2483 pos += sprintf(info+pos, "\nCan write DVD-R:");
2484 for (cdi=topCdromPtr;cdi!=NULL;cdi=cdi->next)
2485 pos += sprintf(info+pos, "\t%d", CDROM_CAN(CDC_DVD_R) != 0);
2487 pos += sprintf(info+pos, "\nCan write DVD-RAM:");
2488 for (cdi=topCdromPtr;cdi!=NULL;cdi=cdi->next)
2489 pos += sprintf(info+pos, "\t%d", CDROM_CAN(CDC_DVD_RAM) != 0);
2491 strcpy(info+pos,"\n\n");
2493 return proc_dostring(ctl, write, filp, buffer, lenp);
2496 /* Unfortunately, per device settings are not implemented through
2497 procfs/sysctl yet. When they are, this will naturally disappear. For now
2498 just update all drives. Later this will become the template on which
2499 new registered drives will be based. */
2500 void cdrom_update_settings(void)
2502 struct cdrom_device_info *cdi;
2504 for (cdi = topCdromPtr; cdi != NULL; cdi = cdi->next) {
2505 if (autoclose && CDROM_CAN(CDC_CLOSE_TRAY))
2506 cdi->options |= CDO_AUTO_CLOSE;
2507 else if (!autoclose)
2508 cdi->options &= ~CDO_AUTO_CLOSE;
2509 if (autoeject && CDROM_CAN(CDC_OPEN_TRAY))
2510 cdi->options |= CDO_AUTO_EJECT;
2511 else if (!autoeject)
2512 cdi->options &= ~CDO_AUTO_EJECT;
2513 if (lockdoor && CDROM_CAN(CDC_LOCK))
2514 cdi->options |= CDO_LOCK;
2516 cdi->options &= ~CDO_LOCK;
2517 if (check_media_type)
2518 cdi->options |= CDO_CHECK_TYPE;
2520 cdi->options &= ~CDO_CHECK_TYPE;
2524 static int cdrom_sysctl_handler(ctl_table *ctl, int write, struct file * filp,
2525 void *buffer, size_t *lenp)
2527 int *valp = ctl->data;
2531 ret = proc_dointvec(ctl, write, filp, buffer, lenp);
2533 if (write && *valp != val) {
2535 /* we only care for 1 or 0. */
2541 switch (ctl->ctl_name) {
2542 case DEV_CDROM_AUTOCLOSE: {
2543 if (valp == &cdrom_sysctl_settings.autoclose)
2544 autoclose = cdrom_sysctl_settings.autoclose;
2547 case DEV_CDROM_AUTOEJECT: {
2548 if (valp == &cdrom_sysctl_settings.autoeject)
2549 autoeject = cdrom_sysctl_settings.autoeject;
2552 case DEV_CDROM_DEBUG: {
2553 if (valp == &cdrom_sysctl_settings.debug)
2554 debug = cdrom_sysctl_settings.debug;
2557 case DEV_CDROM_LOCK: {
2558 if (valp == &cdrom_sysctl_settings.lock)
2559 lockdoor = cdrom_sysctl_settings.lock;
2562 case DEV_CDROM_CHECK_MEDIA: {
2563 if (valp == &cdrom_sysctl_settings.check)
2564 check_media_type = cdrom_sysctl_settings.check;
2568 /* update the option flags according to the changes. we
2569 don't have per device options through sysctl yet,
2570 but we will have and then this will disappear. */
2571 cdrom_update_settings();
2577 /* Place files in /proc/sys/dev/cdrom */
2578 ctl_table cdrom_table[] = {
2579 {DEV_CDROM_INFO, "info", &cdrom_sysctl_settings.info,
2580 CDROM_STR_SIZE, 0444, NULL, &cdrom_sysctl_info},
2581 {DEV_CDROM_AUTOCLOSE, "autoclose", &cdrom_sysctl_settings.autoclose,
2582 sizeof(int), 0644, NULL, &cdrom_sysctl_handler },
2583 {DEV_CDROM_AUTOEJECT, "autoeject", &cdrom_sysctl_settings.autoeject,
2584 sizeof(int), 0644, NULL, &cdrom_sysctl_handler },
2585 {DEV_CDROM_DEBUG, "debug", &cdrom_sysctl_settings.debug,
2586 sizeof(int), 0644, NULL, &cdrom_sysctl_handler },
2587 {DEV_CDROM_LOCK, "lock", &cdrom_sysctl_settings.lock,
2588 sizeof(int), 0644, NULL, &cdrom_sysctl_handler },
2589 {DEV_CDROM_CHECK_MEDIA, "check_media", &cdrom_sysctl_settings.check,
2590 sizeof(int), 0644, NULL, &cdrom_sysctl_handler },
2594 ctl_table cdrom_cdrom_table[] = {
2595 {DEV_CDROM, "cdrom", NULL, 0, 0555, cdrom_table},
2599 /* Make sure that /proc/sys/dev is there */
2600 ctl_table cdrom_root_table[] = {
2601 {CTL_DEV, "dev", NULL, 0, 0555, cdrom_cdrom_table},
2604 static struct ctl_table_header *cdrom_sysctl_header;
2606 static void cdrom_sysctl_register(void)
2608 static int initialized;
2610 if (initialized == 1)
2613 cdrom_sysctl_header = register_sysctl_table(cdrom_root_table, 1);
2614 cdrom_root_table->child->de->owner = THIS_MODULE;
2616 /* set the defaults */
2617 cdrom_sysctl_settings.autoclose = autoclose;
2618 cdrom_sysctl_settings.autoeject = autoeject;
2619 cdrom_sysctl_settings.debug = debug;
2620 cdrom_sysctl_settings.lock = lockdoor;
2621 cdrom_sysctl_settings.check = check_media_type;
2626 static void cdrom_sysctl_unregister(void)
2628 if (cdrom_sysctl_header)
2629 unregister_sysctl_table(cdrom_sysctl_header);
2632 #endif /* CONFIG_SYSCTL */
2634 static int __init cdrom_init(void)
2636 #ifdef CONFIG_SYSCTL
2637 cdrom_sysctl_register();
2640 devfs_handle = devfs_mk_dir(NULL, "cdroms", NULL);
2644 static void __exit cdrom_exit(void)
2646 printk(KERN_INFO "Uniform CD-ROM driver unloaded\n");
2647 #ifdef CONFIG_SYSCTL
2648 cdrom_sysctl_unregister();
2650 devfs_unregister(devfs_handle);
2653 module_init(cdrom_init);
2654 module_exit(cdrom_exit);
2655 MODULE_LICENSE("GPL");