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_SPINLOCK(cdrom_lock);
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
340 /* Not-exported routines. */
341 static int open_for_data(struct cdrom_device_info * cdi);
342 static int check_for_audio_disc(struct cdrom_device_info * cdi,
343 struct cdrom_device_ops * cdo);
344 static void sanitize_format(union cdrom_addr *addr,
345 u_char * curr, u_char requested);
346 static int mmc_ioctl(struct cdrom_device_info *cdi, unsigned int cmd,
349 int cdrom_get_last_written(struct cdrom_device_info *, long *);
350 static int cdrom_get_next_writable(struct cdrom_device_info *, long *);
351 static void cdrom_count_tracks(struct cdrom_device_info *, tracktype*);
353 static int cdrom_mrw_exit(struct cdrom_device_info *cdi);
355 static int cdrom_get_disc_info(struct cdrom_device_info *cdi, disc_information *di);
358 static void cdrom_sysctl_register(void);
359 #endif /* CONFIG_SYSCTL */
360 static struct cdrom_device_info *topCdromPtr;
362 static int cdrom_dummy_generic_packet(struct cdrom_device_info *cdi,
363 struct packet_command *cgc)
366 cgc->sense->sense_key = 0x05;
367 cgc->sense->asc = 0x20;
368 cgc->sense->ascq = 0x00;
375 /* This macro makes sure we don't have to check on cdrom_device_ops
376 * existence in the run-time routines below. Change_capability is a
377 * hack to have the capability flags defined const, while we can still
378 * change it here without gcc complaining at every line.
380 #define ENSURE(call, bits) if (cdo->call == NULL) *change_capability &= ~(bits)
382 int register_cdrom(struct cdrom_device_info *cdi)
384 static char banner_printed;
385 struct cdrom_device_ops *cdo = cdi->ops;
386 int *change_capability = (int *)&cdo->capability; /* hack */
388 cdinfo(CD_OPEN, "entering register_cdrom\n");
390 if (cdo->open == NULL || cdo->release == NULL)
392 if (!banner_printed) {
393 printk(KERN_INFO "Uniform CD-ROM driver " REVISION "\n");
396 cdrom_sysctl_register();
397 #endif /* CONFIG_SYSCTL */
400 ENSURE(drive_status, CDC_DRIVE_STATUS );
401 ENSURE(media_changed, CDC_MEDIA_CHANGED);
402 ENSURE(tray_move, CDC_CLOSE_TRAY | CDC_OPEN_TRAY);
403 ENSURE(lock_door, CDC_LOCK);
404 ENSURE(select_speed, CDC_SELECT_SPEED);
405 ENSURE(get_last_session, CDC_MULTI_SESSION);
406 ENSURE(get_mcn, CDC_MCN);
407 ENSURE(reset, CDC_RESET);
408 ENSURE(audio_ioctl, CDC_PLAY_AUDIO);
409 ENSURE(generic_packet, CDC_GENERIC_PACKET);
412 cdi->options = CDO_USE_FFLAGS;
414 if (autoclose==1 && CDROM_CAN(CDC_CLOSE_TRAY))
415 cdi->options |= (int) CDO_AUTO_CLOSE;
416 if (autoeject==1 && CDROM_CAN(CDC_OPEN_TRAY))
417 cdi->options |= (int) CDO_AUTO_EJECT;
419 cdi->options |= (int) CDO_LOCK;
420 if (check_media_type==1)
421 cdi->options |= (int) CDO_CHECK_TYPE;
423 if (CDROM_CAN(CDC_MRW_W))
424 cdi->exit = cdrom_mrw_exit;
427 cdi->cdda_method = CDDA_BPC_FULL;
429 cdi->cdda_method = CDDA_OLD;
431 if (!cdo->generic_packet)
432 cdo->generic_packet = cdrom_dummy_generic_packet;
434 cdinfo(CD_REG_UNREG, "drive \"/dev/%s\" registered\n", cdi->name);
435 spin_lock(&cdrom_lock);
436 cdi->next = topCdromPtr;
438 spin_unlock(&cdrom_lock);
443 int unregister_cdrom(struct cdrom_device_info *unreg)
445 struct cdrom_device_info *cdi, *prev;
446 cdinfo(CD_OPEN, "entering unregister_cdrom\n");
449 spin_lock(&cdrom_lock);
451 while (cdi && cdi != unreg) {
457 spin_unlock(&cdrom_lock);
461 prev->next = cdi->next;
463 topCdromPtr = cdi->next;
465 spin_unlock(&cdrom_lock);
470 cdi->ops->n_minors--;
471 cdinfo(CD_REG_UNREG, "drive \"/dev/%s\" unregistered\n", cdi->name);
475 int cdrom_get_media_event(struct cdrom_device_info *cdi,
476 struct media_event_desc *med)
478 struct packet_command cgc;
479 unsigned char buffer[8];
480 struct event_header *eh = (struct event_header *) buffer;
482 init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_READ);
483 cgc.cmd[0] = GPCMD_GET_EVENT_STATUS_NOTIFICATION;
484 cgc.cmd[1] = 1; /* IMMED */
485 cgc.cmd[4] = 1 << 4; /* media event */
486 cgc.cmd[8] = sizeof(buffer);
489 if (cdi->ops->generic_packet(cdi, &cgc))
492 if (be16_to_cpu(eh->data_len) < sizeof(*med))
495 if (eh->nea || eh->notification_class != 0x4)
498 memcpy(med, &buffer[sizeof(*eh)], sizeof(*med));
503 * the first prototypes used 0x2c as the page code for the mrw mode page,
504 * subsequently this was changed to 0x03. probe the one used by this drive
506 static int cdrom_mrw_probe_pc(struct cdrom_device_info *cdi)
508 struct packet_command cgc;
511 init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_READ);
516 if (!cdrom_mode_sense(cdi, &cgc, MRW_MODE_PC, 0)) {
517 cdi->mrw_mode_page = MRW_MODE_PC;
519 } else if (!cdrom_mode_sense(cdi, &cgc, MRW_MODE_PC_PRE1, 0)) {
520 cdi->mrw_mode_page = MRW_MODE_PC_PRE1;
527 static int cdrom_is_mrw(struct cdrom_device_info *cdi, int *write)
529 struct packet_command cgc;
530 struct mrw_feature_desc *mfd;
531 unsigned char buffer[16];
536 init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_READ);
538 cgc.cmd[0] = GPCMD_GET_CONFIGURATION;
539 cgc.cmd[3] = CDF_MRW;
540 cgc.cmd[8] = sizeof(buffer);
543 if ((ret = cdi->ops->generic_packet(cdi, &cgc)))
546 mfd = (struct mrw_feature_desc *)&buffer[sizeof(struct feature_header)];
547 if (be16_to_cpu(mfd->feature_code) != CDF_MRW)
551 if ((ret = cdrom_mrw_probe_pc(cdi))) {
559 static int cdrom_mrw_bgformat(struct cdrom_device_info *cdi, int cont)
561 struct packet_command cgc;
562 unsigned char buffer[12];
565 printk(KERN_INFO "cdrom: %sstarting format\n", cont ? "Re" : "");
568 * FmtData bit set (bit 4), format type is 1
570 init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_WRITE);
571 cgc.cmd[0] = GPCMD_FORMAT_UNIT;
572 cgc.cmd[1] = (1 << 4) | 1;
574 cgc.timeout = 5 * 60 * HZ;
577 * 4 byte format list header, 8 byte format list descriptor
590 buffer[8] = 0x24 << 2;
593 ret = cdi->ops->generic_packet(cdi, &cgc);
595 printk(KERN_INFO "cdrom: bgformat failed\n");
600 static int cdrom_mrw_bgformat_susp(struct cdrom_device_info *cdi, int immed)
602 struct packet_command cgc;
604 init_cdrom_command(&cgc, NULL, 0, CGC_DATA_NONE);
605 cgc.cmd[0] = GPCMD_CLOSE_TRACK;
608 * Session = 1, Track = 0
610 cgc.cmd[1] = !!immed;
613 cgc.timeout = 5 * 60 * HZ;
615 return cdi->ops->generic_packet(cdi, &cgc);
618 static int cdrom_flush_cache(struct cdrom_device_info *cdi)
620 struct packet_command cgc;
622 init_cdrom_command(&cgc, NULL, 0, CGC_DATA_NONE);
623 cgc.cmd[0] = GPCMD_FLUSH_CACHE;
625 cgc.timeout = 5 * 60 * HZ;
627 return cdi->ops->generic_packet(cdi, &cgc);
630 static int cdrom_mrw_exit(struct cdrom_device_info *cdi)
635 ret = cdrom_get_disc_info(cdi, &di);
636 if (ret < 0 || ret < (int)offsetof(typeof(di),disc_type))
640 if (di.mrw_status == CDM_MRW_BGFORMAT_ACTIVE) {
641 printk(KERN_INFO "cdrom: issuing MRW back ground "
643 ret = cdrom_mrw_bgformat_susp(cdi, 0);
646 if (!ret && cdi->media_written)
647 ret = cdrom_flush_cache(cdi);
652 static int cdrom_mrw_set_lba_space(struct cdrom_device_info *cdi, int space)
654 struct packet_command cgc;
655 struct mode_page_header *mph;
657 int ret, offset, size;
659 init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_READ);
662 cgc.buflen = sizeof(buffer);
664 if ((ret = cdrom_mode_sense(cdi, &cgc, cdi->mrw_mode_page, 0)))
667 mph = (struct mode_page_header *) buffer;
668 offset = be16_to_cpu(mph->desc_length);
669 size = be16_to_cpu(mph->mode_data_length) + 2;
671 buffer[offset + 3] = space;
674 if ((ret = cdrom_mode_select(cdi, &cgc)))
677 printk(KERN_INFO "cdrom: %s: mrw address space %s selected\n", cdi->name, mrw_address_space[space]);
681 static int cdrom_get_random_writable(struct cdrom_device_info *cdi,
682 struct rwrt_feature_desc *rfd)
684 struct packet_command cgc;
688 init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_READ);
690 cgc.cmd[0] = GPCMD_GET_CONFIGURATION; /* often 0x46 */
691 cgc.cmd[3] = CDF_RWRT; /* often 0x0020 */
692 cgc.cmd[8] = sizeof(buffer); /* often 0x18 */
695 if ((ret = cdi->ops->generic_packet(cdi, &cgc)))
698 memcpy(rfd, &buffer[sizeof(struct feature_header)], sizeof (*rfd));
702 static int cdrom_has_defect_mgt(struct cdrom_device_info *cdi)
704 struct packet_command cgc;
706 __be16 *feature_code;
709 init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_READ);
711 cgc.cmd[0] = GPCMD_GET_CONFIGURATION;
712 cgc.cmd[3] = CDF_HWDM;
713 cgc.cmd[8] = sizeof(buffer);
716 if ((ret = cdi->ops->generic_packet(cdi, &cgc)))
719 feature_code = (__be16 *) &buffer[sizeof(struct feature_header)];
720 if (be16_to_cpu(*feature_code) == CDF_HWDM)
727 static int cdrom_is_random_writable(struct cdrom_device_info *cdi, int *write)
729 struct rwrt_feature_desc rfd;
734 if ((ret = cdrom_get_random_writable(cdi, &rfd)))
737 if (CDF_RWRT == be16_to_cpu(rfd.feature_code))
743 static int cdrom_media_erasable(struct cdrom_device_info *cdi)
748 ret = cdrom_get_disc_info(cdi, &di);
749 if (ret < 0 || ret < offsetof(typeof(di), n_first_track))
756 * FIXME: check RO bit
758 static int cdrom_dvdram_open_write(struct cdrom_device_info *cdi)
760 int ret = cdrom_media_erasable(cdi);
763 * allow writable open if media info read worked and media is
764 * erasable, _or_ if it fails since not all drives support it
772 static int cdrom_mrw_open_write(struct cdrom_device_info *cdi)
778 * always reset to DMA lba space on open
780 if (cdrom_mrw_set_lba_space(cdi, MRW_LBA_DMA)) {
781 printk(KERN_ERR "cdrom: failed setting lba address space\n");
785 ret = cdrom_get_disc_info(cdi, &di);
786 if (ret < 0 || ret < offsetof(typeof(di),disc_type))
794 * 0 - not MRW formatted
795 * 1 - MRW bgformat started, but not running or complete
796 * 2 - MRW bgformat in progress
797 * 3 - MRW formatting complete
800 printk(KERN_INFO "cdrom open: mrw_status '%s'\n",
801 mrw_format_status[di.mrw_status]);
804 else if (di.mrw_status == CDM_MRW_BGFORMAT_INACTIVE &&
806 ret = cdrom_mrw_bgformat(cdi, 1);
811 static int mo_open_write(struct cdrom_device_info *cdi)
813 struct packet_command cgc;
817 init_cdrom_command(&cgc, &buffer, 4, CGC_DATA_READ);
821 * obtain write protect information as per
822 * drivers/scsi/sd.c:sd_read_write_protect_flag
825 ret = cdrom_mode_sense(cdi, &cgc, GPMODE_ALL_PAGES, 0);
827 ret = cdrom_mode_sense(cdi, &cgc, GPMODE_VENDOR_PAGE, 0);
830 ret = cdrom_mode_sense(cdi, &cgc, GPMODE_ALL_PAGES, 0);
833 /* drive gave us no info, let the user go ahead */
837 return buffer[3] & 0x80;
840 static int cdrom_ram_open_write(struct cdrom_device_info *cdi)
842 struct rwrt_feature_desc rfd;
845 if ((ret = cdrom_has_defect_mgt(cdi)))
848 if ((ret = cdrom_get_random_writable(cdi, &rfd)))
850 else if (CDF_RWRT == be16_to_cpu(rfd.feature_code))
853 cdinfo(CD_OPEN, "can open for random write\n");
857 static void cdrom_mmc3_profile(struct cdrom_device_info *cdi)
859 struct packet_command cgc;
861 int ret, mmc3_profile;
863 init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_READ);
865 cgc.cmd[0] = GPCMD_GET_CONFIGURATION;
867 cgc.cmd[2] = cgc.cmd[3] = 0; /* Starting Feature Number */
868 cgc.cmd[8] = sizeof(buffer); /* Allocation Length */
871 if ((ret = cdi->ops->generic_packet(cdi, &cgc)))
872 mmc3_profile = 0xffff;
874 mmc3_profile = (buffer[6] << 8) | buffer[7];
876 cdi->mmc3_profile = mmc3_profile;
879 static int cdrom_is_dvd_rw(struct cdrom_device_info *cdi)
881 switch (cdi->mmc3_profile) {
882 case 0x12: /* DVD-RAM */
883 case 0x1A: /* DVD+RW */
891 * returns 0 for ok to open write, non-0 to disallow
893 static int cdrom_open_write(struct cdrom_device_info *cdi)
895 int mrw, mrw_write, ram_write;
899 if (!cdrom_is_mrw(cdi, &mrw_write))
902 if (CDROM_CAN(CDC_MO_DRIVE))
905 (void) cdrom_is_random_writable(cdi, &ram_write);
908 cdi->mask &= ~CDC_MRW;
910 cdi->mask |= CDC_MRW;
913 cdi->mask &= ~CDC_MRW_W;
915 cdi->mask |= CDC_MRW_W;
918 cdi->mask &= ~CDC_RAM;
920 cdi->mask |= CDC_RAM;
922 if (CDROM_CAN(CDC_MRW_W))
923 ret = cdrom_mrw_open_write(cdi);
924 else if (CDROM_CAN(CDC_DVD_RAM))
925 ret = cdrom_dvdram_open_write(cdi);
926 else if (CDROM_CAN(CDC_RAM) &&
927 !CDROM_CAN(CDC_CD_R|CDC_CD_RW|CDC_DVD|CDC_DVD_R|CDC_MRW|CDC_MO_DRIVE))
928 ret = cdrom_ram_open_write(cdi);
929 else if (CDROM_CAN(CDC_MO_DRIVE))
930 ret = mo_open_write(cdi);
931 else if (!cdrom_is_dvd_rw(cdi))
937 static void cdrom_dvd_rw_close_write(struct cdrom_device_info *cdi)
939 struct packet_command cgc;
941 if (cdi->mmc3_profile != 0x1a) {
942 cdinfo(CD_CLOSE, "%s: No DVD+RW\n", cdi->name);
946 if (!cdi->media_written) {
947 cdinfo(CD_CLOSE, "%s: DVD+RW media clean\n", cdi->name);
951 printk(KERN_INFO "cdrom: %s: dirty DVD+RW media, \"finalizing\"\n",
954 init_cdrom_command(&cgc, NULL, 0, CGC_DATA_NONE);
955 cgc.cmd[0] = GPCMD_FLUSH_CACHE;
957 cdi->ops->generic_packet(cdi, &cgc);
959 init_cdrom_command(&cgc, NULL, 0, CGC_DATA_NONE);
960 cgc.cmd[0] = GPCMD_CLOSE_TRACK;
961 cgc.timeout = 3000*HZ;
963 cdi->ops->generic_packet(cdi, &cgc);
965 init_cdrom_command(&cgc, NULL, 0, CGC_DATA_NONE);
966 cgc.cmd[0] = GPCMD_CLOSE_TRACK;
967 cgc.cmd[2] = 2; /* Close session */
969 cgc.timeout = 3000*HZ;
970 cdi->ops->generic_packet(cdi, &cgc);
972 cdi->media_written = 0;
975 static int cdrom_close_write(struct cdrom_device_info *cdi)
978 return cdrom_flush_cache(cdi);
984 /* We use the open-option O_NONBLOCK to indicate that the
985 * purpose of opening is only for subsequent ioctl() calls; no device
986 * integrity checks are performed.
988 * We hope that all cd-player programs will adopt this convention. It
989 * is in their own interest: device control becomes a lot easier
992 int cdrom_open(struct cdrom_device_info *cdi, struct inode *ip, struct file *fp)
996 cdinfo(CD_OPEN, "entering cdrom_open\n");
998 /* if this was a O_NONBLOCK open and we should honor the flags,
999 * do a quick open without drive/disc integrity checks. */
1001 if ((fp->f_flags & O_NONBLOCK) && (cdi->options & CDO_USE_FFLAGS)) {
1002 ret = cdi->ops->open(cdi, 1);
1004 ret = open_for_data(cdi);
1007 cdrom_mmc3_profile(cdi);
1008 if (fp->f_mode & FMODE_WRITE) {
1010 if (cdrom_open_write(cdi))
1012 if (!CDROM_CAN(CDC_RAM))
1015 cdi->media_written = 0;
1022 cdinfo(CD_OPEN, "Use count for \"/dev/%s\" now %d\n",
1023 cdi->name, cdi->use_count);
1024 /* Do this on open. Don't wait for mount, because they might
1025 not be mounting, but opening with O_NONBLOCK */
1026 check_disk_change(ip->i_bdev);
1029 cdi->ops->release(cdi);
1036 int open_for_data(struct cdrom_device_info * cdi)
1039 struct cdrom_device_ops *cdo = cdi->ops;
1041 cdinfo(CD_OPEN, "entering open_for_data\n");
1042 /* Check if the driver can report drive status. If it can, we
1043 can do clever things. If it can't, well, we at least tried! */
1044 if (cdo->drive_status != NULL) {
1045 ret = cdo->drive_status(cdi, CDSL_CURRENT);
1046 cdinfo(CD_OPEN, "drive_status=%d\n", ret);
1047 if (ret == CDS_TRAY_OPEN) {
1048 cdinfo(CD_OPEN, "the tray is open...\n");
1049 /* can/may i close it? */
1050 if (CDROM_CAN(CDC_CLOSE_TRAY) &&
1051 cdi->options & CDO_AUTO_CLOSE) {
1052 cdinfo(CD_OPEN, "trying to close the tray.\n");
1053 ret=cdo->tray_move(cdi,0);
1055 cdinfo(CD_OPEN, "bummer. tried to close the tray but failed.\n");
1056 /* Ignore the error from the low
1057 level driver. We don't care why it
1058 couldn't close the tray. We only care
1059 that there is no disc in the drive,
1060 since that is the _REAL_ problem here.*/
1062 goto clean_up_and_return;
1065 cdinfo(CD_OPEN, "bummer. this drive can't close the tray.\n");
1067 goto clean_up_and_return;
1069 /* Ok, the door should be closed now.. Check again */
1070 ret = cdo->drive_status(cdi, CDSL_CURRENT);
1071 if ((ret == CDS_NO_DISC) || (ret==CDS_TRAY_OPEN)) {
1072 cdinfo(CD_OPEN, "bummer. the tray is still not closed.\n");
1073 cdinfo(CD_OPEN, "tray might not contain a medium.\n");
1075 goto clean_up_and_return;
1077 cdinfo(CD_OPEN, "the tray is now closed.\n");
1079 /* the door should be closed now, check for the disc */
1080 ret = cdo->drive_status(cdi, CDSL_CURRENT);
1081 if (ret!=CDS_DISC_OK) {
1083 goto clean_up_and_return;
1086 cdrom_count_tracks(cdi, &tracks);
1087 if (tracks.error == CDS_NO_DISC) {
1088 cdinfo(CD_OPEN, "bummer. no disc.\n");
1090 goto clean_up_and_return;
1092 /* CD-Players which don't use O_NONBLOCK, workman
1093 * for example, need bit CDO_CHECK_TYPE cleared! */
1094 if (tracks.data==0) {
1095 if (cdi->options & CDO_CHECK_TYPE) {
1096 /* give people a warning shot, now that CDO_CHECK_TYPE
1097 is the default case! */
1098 cdinfo(CD_OPEN, "bummer. wrong media type.\n");
1099 cdinfo(CD_WARNING, "pid %d must open device O_NONBLOCK!\n",
1100 (unsigned int)current->pid);
1102 goto clean_up_and_return;
1105 cdinfo(CD_OPEN, "wrong media type, but CDO_CHECK_TYPE not set.\n");
1109 cdinfo(CD_OPEN, "all seems well, opening the device.\n");
1111 /* all seems well, we can open the device */
1112 ret = cdo->open(cdi, 0); /* open for data */
1113 cdinfo(CD_OPEN, "opening the device gave me %d.\n", ret);
1114 /* After all this careful checking, we shouldn't have problems
1115 opening the device, but we don't want the device locked if
1116 this somehow fails... */
1118 cdinfo(CD_OPEN, "open device failed.\n");
1119 goto clean_up_and_return;
1121 if (CDROM_CAN(CDC_LOCK) && (cdi->options & CDO_LOCK)) {
1122 cdo->lock_door(cdi, 1);
1123 cdinfo(CD_OPEN, "door locked.\n");
1125 cdinfo(CD_OPEN, "device opened successfully.\n");
1128 /* Something failed. Try to unlock the drive, because some drivers
1129 (notably ide-cd) lock the drive after every command. This produced
1130 a nasty bug where after mount failed, the drive would remain locked!
1131 This ensures that the drive gets unlocked after a mount fails. This
1132 is a goto to avoid bloating the driver with redundant code. */
1133 clean_up_and_return:
1134 cdinfo(CD_OPEN, "open failed.\n");
1135 if (CDROM_CAN(CDC_LOCK) && cdi->options & CDO_LOCK) {
1136 cdo->lock_door(cdi, 0);
1137 cdinfo(CD_OPEN, "door unlocked.\n");
1142 /* This code is similar to that in open_for_data. The routine is called
1143 whenever an audio play operation is requested.
1145 int check_for_audio_disc(struct cdrom_device_info * cdi,
1146 struct cdrom_device_ops * cdo)
1150 cdinfo(CD_OPEN, "entering check_for_audio_disc\n");
1151 if (!(cdi->options & CDO_CHECK_TYPE))
1153 if (cdo->drive_status != NULL) {
1154 ret = cdo->drive_status(cdi, CDSL_CURRENT);
1155 cdinfo(CD_OPEN, "drive_status=%d\n", ret);
1156 if (ret == CDS_TRAY_OPEN) {
1157 cdinfo(CD_OPEN, "the tray is open...\n");
1158 /* can/may i close it? */
1159 if (CDROM_CAN(CDC_CLOSE_TRAY) &&
1160 cdi->options & CDO_AUTO_CLOSE) {
1161 cdinfo(CD_OPEN, "trying to close the tray.\n");
1162 ret=cdo->tray_move(cdi,0);
1164 cdinfo(CD_OPEN, "bummer. tried to close tray but failed.\n");
1165 /* Ignore the error from the low
1166 level driver. We don't care why it
1167 couldn't close the tray. We only care
1168 that there is no disc in the drive,
1169 since that is the _REAL_ problem here.*/
1173 cdinfo(CD_OPEN, "bummer. this driver can't close the tray.\n");
1176 /* Ok, the door should be closed now.. Check again */
1177 ret = cdo->drive_status(cdi, CDSL_CURRENT);
1178 if ((ret == CDS_NO_DISC) || (ret==CDS_TRAY_OPEN)) {
1179 cdinfo(CD_OPEN, "bummer. the tray is still not closed.\n");
1182 if (ret!=CDS_DISC_OK) {
1183 cdinfo(CD_OPEN, "bummer. disc isn't ready.\n");
1186 cdinfo(CD_OPEN, "the tray is now closed.\n");
1189 cdrom_count_tracks(cdi, &tracks);
1191 return(tracks.error);
1193 if (tracks.audio==0)
1194 return -EMEDIUMTYPE;
1199 /* Admittedly, the logic below could be performed in a nicer way. */
1200 int cdrom_release(struct cdrom_device_info *cdi, struct file *fp)
1202 struct cdrom_device_ops *cdo = cdi->ops;
1203 int opened_for_data;
1205 cdinfo(CD_CLOSE, "entering cdrom_release\n");
1207 if (cdi->use_count > 0)
1209 if (cdi->use_count == 0)
1210 cdinfo(CD_CLOSE, "Use count for \"/dev/%s\" now zero\n", cdi->name);
1211 if (cdi->use_count == 0)
1212 cdrom_dvd_rw_close_write(cdi);
1213 if (cdi->use_count == 0 &&
1214 (cdo->capability & CDC_LOCK) && !keeplocked) {
1215 cdinfo(CD_CLOSE, "Unlocking door!\n");
1216 cdo->lock_door(cdi, 0);
1218 opened_for_data = !(cdi->options & CDO_USE_FFLAGS) ||
1219 !(fp && fp->f_flags & O_NONBLOCK);
1222 * flush cache on last write release
1224 if (CDROM_CAN(CDC_RAM) && !cdi->use_count && cdi->for_data)
1225 cdrom_close_write(cdi);
1228 if (cdi->use_count == 0) { /* last process that closes dev*/
1229 if (opened_for_data &&
1230 cdi->options & CDO_AUTO_EJECT && CDROM_CAN(CDC_OPEN_TRAY))
1231 cdo->tray_move(cdi, 1);
1236 static int cdrom_read_mech_status(struct cdrom_device_info *cdi,
1237 struct cdrom_changer_info *buf)
1239 struct packet_command cgc;
1240 struct cdrom_device_ops *cdo = cdi->ops;
1244 * Sanyo changer isn't spec compliant (doesn't use regular change
1245 * LOAD_UNLOAD command, and it doesn't implement the mech status
1248 if (cdi->sanyo_slot) {
1249 buf->hdr.nslots = 3;
1250 buf->hdr.curslot = cdi->sanyo_slot == 3 ? 0 : cdi->sanyo_slot;
1251 for (length = 0; length < 3; length++) {
1252 buf->slots[length].disc_present = 1;
1253 buf->slots[length].change = 0;
1258 length = sizeof(struct cdrom_mechstat_header) +
1259 cdi->capacity * sizeof(struct cdrom_slot);
1261 init_cdrom_command(&cgc, buf, length, CGC_DATA_READ);
1262 cgc.cmd[0] = GPCMD_MECHANISM_STATUS;
1263 cgc.cmd[8] = (length >> 8) & 0xff;
1264 cgc.cmd[9] = length & 0xff;
1265 return cdo->generic_packet(cdi, &cgc);
1268 static int cdrom_slot_status(struct cdrom_device_info *cdi, int slot)
1270 struct cdrom_changer_info *info;
1273 cdinfo(CD_CHANGER, "entering cdrom_slot_status()\n");
1274 if (cdi->sanyo_slot)
1277 info = kmalloc(sizeof(*info), GFP_KERNEL);
1281 if ((ret = cdrom_read_mech_status(cdi, info)))
1284 if (info->slots[slot].disc_present)
1294 /* Return the number of slots for an ATAPI/SCSI cdrom,
1295 * return 1 if not a changer.
1297 int cdrom_number_of_slots(struct cdrom_device_info *cdi)
1301 struct cdrom_changer_info *info;
1303 cdinfo(CD_CHANGER, "entering cdrom_number_of_slots()\n");
1304 /* cdrom_read_mech_status requires a valid value for capacity: */
1307 info = kmalloc(sizeof(*info), GFP_KERNEL);
1311 if ((status = cdrom_read_mech_status(cdi, info)) == 0)
1312 nslots = info->hdr.nslots;
1319 /* If SLOT < 0, unload the current slot. Otherwise, try to load SLOT. */
1320 static int cdrom_load_unload(struct cdrom_device_info *cdi, int slot)
1322 struct packet_command cgc;
1324 cdinfo(CD_CHANGER, "entering cdrom_load_unload()\n");
1325 if (cdi->sanyo_slot && slot < 0)
1328 init_cdrom_command(&cgc, NULL, 0, CGC_DATA_NONE);
1329 cgc.cmd[0] = GPCMD_LOAD_UNLOAD;
1330 cgc.cmd[4] = 2 + (slot >= 0);
1332 cgc.timeout = 60 * HZ;
1334 /* The Sanyo 3 CD changer uses byte 7 of the
1335 GPCMD_TEST_UNIT_READY to command to switch CDs instead of
1336 using the GPCMD_LOAD_UNLOAD opcode. */
1337 if (cdi->sanyo_slot && -1 < slot) {
1338 cgc.cmd[0] = GPCMD_TEST_UNIT_READY;
1340 cgc.cmd[4] = cgc.cmd[8] = 0;
1341 cdi->sanyo_slot = slot ? slot : 3;
1344 return cdi->ops->generic_packet(cdi, &cgc);
1347 static int cdrom_select_disc(struct cdrom_device_info *cdi, int slot)
1349 struct cdrom_changer_info *info;
1353 cdinfo(CD_CHANGER, "entering cdrom_select_disc()\n");
1354 if (!CDROM_CAN(CDC_SELECT_DISC))
1355 return -EDRIVE_CANT_DO_THIS;
1357 (void) cdi->ops->media_changed(cdi, slot);
1359 if (slot == CDSL_NONE) {
1360 /* set media changed bits, on both queues */
1361 cdi->mc_flags = 0x3;
1362 return cdrom_load_unload(cdi, -1);
1365 info = kmalloc(sizeof(*info), GFP_KERNEL);
1369 if ((ret = cdrom_read_mech_status(cdi, info))) {
1374 curslot = info->hdr.curslot;
1377 if (cdi->use_count > 1 || keeplocked) {
1378 if (slot == CDSL_CURRENT) {
1385 /* Specifying CDSL_CURRENT will attempt to load the currnet slot,
1386 which is useful if it had been previously unloaded.
1387 Whether it can or not, it returns the current slot.
1388 Similarly, if slot happens to be the current one, we still
1390 if (slot == CDSL_CURRENT)
1393 /* set media changed bits on both queues */
1394 cdi->mc_flags = 0x3;
1395 if ((ret = cdrom_load_unload(cdi, slot)))
1401 /* We want to make media_changed accessible to the user through an
1402 * ioctl. The main problem now is that we must double-buffer the
1403 * low-level implementation, to assure that the VFS and the user both
1404 * see a medium change once.
1408 int media_changed(struct cdrom_device_info *cdi, int queue)
1410 unsigned int mask = (1 << (queue & 1));
1411 int ret = !!(cdi->mc_flags & mask);
1413 if (!CDROM_CAN(CDC_MEDIA_CHANGED))
1415 /* changed since last call? */
1416 if (cdi->ops->media_changed(cdi, CDSL_CURRENT)) {
1417 cdi->mc_flags = 0x3; /* set bit on both queues */
1419 cdi->media_written = 0;
1421 cdi->mc_flags &= ~mask; /* clear bit */
1425 int cdrom_media_changed(struct cdrom_device_info *cdi)
1427 /* This talks to the VFS, which doesn't like errors - just 1 or 0.
1428 * Returning "0" is always safe (media hasn't been changed). Do that
1429 * if the low-level cdrom driver dosn't support media changed. */
1430 if (cdi == NULL || cdi->ops->media_changed == NULL)
1432 if (!CDROM_CAN(CDC_MEDIA_CHANGED))
1434 return media_changed(cdi, 0);
1437 /* badly broken, I know. Is due for a fixup anytime. */
1438 static void cdrom_count_tracks(struct cdrom_device_info *cdi, tracktype* tracks)
1440 struct cdrom_tochdr header;
1441 struct cdrom_tocentry entry;
1448 cdinfo(CD_COUNT_TRACKS, "entering cdrom_count_tracks\n");
1449 if (!CDROM_CAN(CDC_PLAY_AUDIO)) {
1450 tracks->error=CDS_NO_INFO;
1453 /* Grab the TOC header so we can see how many tracks there are */
1454 if ((ret = cdi->ops->audio_ioctl(cdi, CDROMREADTOCHDR, &header))) {
1455 if (ret == -ENOMEDIUM)
1456 tracks->error = CDS_NO_DISC;
1458 tracks->error = CDS_NO_INFO;
1461 /* check what type of tracks are on this disc */
1462 entry.cdte_format = CDROM_MSF;
1463 for (i = header.cdth_trk0; i <= header.cdth_trk1; i++) {
1464 entry.cdte_track = i;
1465 if (cdi->ops->audio_ioctl(cdi, CDROMREADTOCENTRY, &entry)) {
1466 tracks->error=CDS_NO_INFO;
1469 if (entry.cdte_ctrl & CDROM_DATA_TRACK) {
1470 if (entry.cdte_format == 0x10)
1472 else if (entry.cdte_format == 0x20)
1478 cdinfo(CD_COUNT_TRACKS, "track %d: format=%d, ctrl=%d\n",
1479 i, entry.cdte_format, entry.cdte_ctrl);
1481 cdinfo(CD_COUNT_TRACKS, "disc has %d tracks: %d=audio %d=data %d=Cd-I %d=XA\n",
1482 header.cdth_trk1, tracks->audio, tracks->data,
1483 tracks->cdi, tracks->xa);
1486 /* Requests to the low-level drivers will /always/ be done in the
1487 following format convention:
1489 CDROM_LBA: all data-related requests.
1490 CDROM_MSF: all audio-related requests.
1492 However, a low-level implementation is allowed to refuse this
1493 request, and return information in its own favorite format.
1495 It doesn't make sense /at all/ to ask for a play_audio in LBA
1496 format, or ask for multi-session info in MSF format. However, for
1497 backward compatibility these format requests will be satisfied, but
1498 the requests to the low-level drivers will be sanitized in the more
1499 meaningful format indicated above.
1503 void sanitize_format(union cdrom_addr *addr,
1504 u_char * curr, u_char requested)
1506 if (*curr == requested)
1507 return; /* nothing to be done! */
1508 if (requested == CDROM_LBA) {
1509 addr->lba = (int) addr->msf.frame +
1510 75 * (addr->msf.second - 2 + 60 * addr->msf.minute);
1511 } else { /* CDROM_MSF */
1512 int lba = addr->lba;
1513 addr->msf.frame = lba % 75;
1516 addr->msf.second = lba % 60;
1517 addr->msf.minute = lba / 60;
1522 void init_cdrom_command(struct packet_command *cgc, void *buf, int len,
1525 memset(cgc, 0, sizeof(struct packet_command));
1527 memset(buf, 0, len);
1528 cgc->buffer = (char *) buf;
1530 cgc->data_direction = type;
1531 cgc->timeout = 5*HZ;
1536 #define copy_key(dest,src) memcpy((dest), (src), sizeof(dvd_key))
1537 #define copy_chal(dest,src) memcpy((dest), (src), sizeof(dvd_challenge))
1539 static void setup_report_key(struct packet_command *cgc, unsigned agid, unsigned type)
1541 cgc->cmd[0] = GPCMD_REPORT_KEY;
1542 cgc->cmd[10] = type | (agid << 6);
1544 case 0: case 8: case 5: {
1557 cgc->cmd[9] = cgc->buflen;
1558 cgc->data_direction = CGC_DATA_READ;
1561 static void setup_send_key(struct packet_command *cgc, unsigned agid, unsigned type)
1563 cgc->cmd[0] = GPCMD_SEND_KEY;
1564 cgc->cmd[10] = type | (agid << 6);
1579 cgc->cmd[9] = cgc->buflen;
1580 cgc->data_direction = CGC_DATA_WRITE;
1583 static int dvd_do_auth(struct cdrom_device_info *cdi, dvd_authinfo *ai)
1587 struct packet_command cgc;
1588 struct cdrom_device_ops *cdo = cdi->ops;
1589 rpc_state_t rpc_state;
1591 memset(buf, 0, sizeof(buf));
1592 init_cdrom_command(&cgc, buf, 0, CGC_DATA_READ);
1596 case DVD_LU_SEND_AGID:
1597 cdinfo(CD_DVD, "entering DVD_LU_SEND_AGID\n");
1599 setup_report_key(&cgc, ai->lsa.agid, 0);
1601 if ((ret = cdo->generic_packet(cdi, &cgc)))
1604 ai->lsa.agid = buf[7] >> 6;
1605 /* Returning data, let host change state */
1608 case DVD_LU_SEND_KEY1:
1609 cdinfo(CD_DVD, "entering DVD_LU_SEND_KEY1\n");
1610 setup_report_key(&cgc, ai->lsk.agid, 2);
1612 if ((ret = cdo->generic_packet(cdi, &cgc)))
1615 copy_key(ai->lsk.key, &buf[4]);
1616 /* Returning data, let host change state */
1619 case DVD_LU_SEND_CHALLENGE:
1620 cdinfo(CD_DVD, "entering DVD_LU_SEND_CHALLENGE\n");
1621 setup_report_key(&cgc, ai->lsc.agid, 1);
1623 if ((ret = cdo->generic_packet(cdi, &cgc)))
1626 copy_chal(ai->lsc.chal, &buf[4]);
1627 /* Returning data, let host change state */
1631 case DVD_LU_SEND_TITLE_KEY:
1632 cdinfo(CD_DVD, "entering DVD_LU_SEND_TITLE_KEY\n");
1634 setup_report_key(&cgc, ai->lstk.agid, 4);
1635 cgc.cmd[5] = ai->lstk.lba;
1636 cgc.cmd[4] = ai->lstk.lba >> 8;
1637 cgc.cmd[3] = ai->lstk.lba >> 16;
1638 cgc.cmd[2] = ai->lstk.lba >> 24;
1640 if ((ret = cdo->generic_packet(cdi, &cgc)))
1643 ai->lstk.cpm = (buf[4] >> 7) & 1;
1644 ai->lstk.cp_sec = (buf[4] >> 6) & 1;
1645 ai->lstk.cgms = (buf[4] >> 4) & 3;
1646 copy_key(ai->lstk.title_key, &buf[5]);
1647 /* Returning data, let host change state */
1650 case DVD_LU_SEND_ASF:
1651 cdinfo(CD_DVD, "entering DVD_LU_SEND_ASF\n");
1652 setup_report_key(&cgc, ai->lsasf.agid, 5);
1654 if ((ret = cdo->generic_packet(cdi, &cgc)))
1657 ai->lsasf.asf = buf[7] & 1;
1660 /* LU data receive (LU changes state) */
1661 case DVD_HOST_SEND_CHALLENGE:
1662 cdinfo(CD_DVD, "entering DVD_HOST_SEND_CHALLENGE\n");
1663 setup_send_key(&cgc, ai->hsc.agid, 1);
1665 copy_chal(&buf[4], ai->hsc.chal);
1667 if ((ret = cdo->generic_packet(cdi, &cgc)))
1670 ai->type = DVD_LU_SEND_KEY1;
1673 case DVD_HOST_SEND_KEY2:
1674 cdinfo(CD_DVD, "entering DVD_HOST_SEND_KEY2\n");
1675 setup_send_key(&cgc, ai->hsk.agid, 3);
1677 copy_key(&buf[4], ai->hsk.key);
1679 if ((ret = cdo->generic_packet(cdi, &cgc))) {
1680 ai->type = DVD_AUTH_FAILURE;
1683 ai->type = DVD_AUTH_ESTABLISHED;
1687 case DVD_INVALIDATE_AGID:
1689 cdinfo(CD_DVD, "entering DVD_INVALIDATE_AGID\n");
1690 setup_report_key(&cgc, ai->lsa.agid, 0x3f);
1691 if ((ret = cdo->generic_packet(cdi, &cgc)))
1695 /* Get region settings */
1696 case DVD_LU_SEND_RPC_STATE:
1697 cdinfo(CD_DVD, "entering DVD_LU_SEND_RPC_STATE\n");
1698 setup_report_key(&cgc, 0, 8);
1699 memset(&rpc_state, 0, sizeof(rpc_state_t));
1700 cgc.buffer = (char *) &rpc_state;
1702 if ((ret = cdo->generic_packet(cdi, &cgc)))
1705 ai->lrpcs.type = rpc_state.type_code;
1706 ai->lrpcs.vra = rpc_state.vra;
1707 ai->lrpcs.ucca = rpc_state.ucca;
1708 ai->lrpcs.region_mask = rpc_state.region_mask;
1709 ai->lrpcs.rpc_scheme = rpc_state.rpc_scheme;
1712 /* Set region settings */
1713 case DVD_HOST_SEND_RPC_STATE:
1714 cdinfo(CD_DVD, "entering DVD_HOST_SEND_RPC_STATE\n");
1715 setup_send_key(&cgc, 0, 6);
1717 buf[4] = ai->hrpcs.pdrc;
1719 if ((ret = cdo->generic_packet(cdi, &cgc)))
1724 cdinfo(CD_WARNING, "Invalid DVD key ioctl (%d)\n", ai->type);
1731 static int dvd_read_physical(struct cdrom_device_info *cdi, dvd_struct *s)
1733 unsigned char buf[21], *base;
1734 struct dvd_layer *layer;
1735 struct packet_command cgc;
1736 struct cdrom_device_ops *cdo = cdi->ops;
1737 int ret, layer_num = s->physical.layer_num;
1739 if (layer_num >= DVD_LAYERS)
1742 init_cdrom_command(&cgc, buf, sizeof(buf), CGC_DATA_READ);
1743 cgc.cmd[0] = GPCMD_READ_DVD_STRUCTURE;
1744 cgc.cmd[6] = layer_num;
1745 cgc.cmd[7] = s->type;
1746 cgc.cmd[9] = cgc.buflen & 0xff;
1749 * refrain from reporting errors on non-existing layers (mainly)
1753 if ((ret = cdo->generic_packet(cdi, &cgc)))
1757 layer = &s->physical.layer[layer_num];
1760 * place the data... really ugly, but at least we won't have to
1761 * worry about endianess in userspace.
1763 memset(layer, 0, sizeof(*layer));
1764 layer->book_version = base[0] & 0xf;
1765 layer->book_type = base[0] >> 4;
1766 layer->min_rate = base[1] & 0xf;
1767 layer->disc_size = base[1] >> 4;
1768 layer->layer_type = base[2] & 0xf;
1769 layer->track_path = (base[2] >> 4) & 1;
1770 layer->nlayers = (base[2] >> 5) & 3;
1771 layer->track_density = base[3] & 0xf;
1772 layer->linear_density = base[3] >> 4;
1773 layer->start_sector = base[5] << 16 | base[6] << 8 | base[7];
1774 layer->end_sector = base[9] << 16 | base[10] << 8 | base[11];
1775 layer->end_sector_l0 = base[13] << 16 | base[14] << 8 | base[15];
1776 layer->bca = base[16] >> 7;
1781 static int dvd_read_copyright(struct cdrom_device_info *cdi, dvd_struct *s)
1785 struct packet_command cgc;
1786 struct cdrom_device_ops *cdo = cdi->ops;
1788 init_cdrom_command(&cgc, buf, sizeof(buf), CGC_DATA_READ);
1789 cgc.cmd[0] = GPCMD_READ_DVD_STRUCTURE;
1790 cgc.cmd[6] = s->copyright.layer_num;
1791 cgc.cmd[7] = s->type;
1792 cgc.cmd[8] = cgc.buflen >> 8;
1793 cgc.cmd[9] = cgc.buflen & 0xff;
1795 if ((ret = cdo->generic_packet(cdi, &cgc)))
1798 s->copyright.cpst = buf[4];
1799 s->copyright.rmi = buf[5];
1804 static int dvd_read_disckey(struct cdrom_device_info *cdi, dvd_struct *s)
1808 struct packet_command cgc;
1809 struct cdrom_device_ops *cdo = cdi->ops;
1811 size = sizeof(s->disckey.value) + 4;
1813 if ((buf = kmalloc(size, GFP_KERNEL)) == NULL)
1816 init_cdrom_command(&cgc, buf, size, CGC_DATA_READ);
1817 cgc.cmd[0] = GPCMD_READ_DVD_STRUCTURE;
1818 cgc.cmd[7] = s->type;
1819 cgc.cmd[8] = size >> 8;
1820 cgc.cmd[9] = size & 0xff;
1821 cgc.cmd[10] = s->disckey.agid << 6;
1823 if (!(ret = cdo->generic_packet(cdi, &cgc)))
1824 memcpy(s->disckey.value, &buf[4], sizeof(s->disckey.value));
1830 static int dvd_read_bca(struct cdrom_device_info *cdi, dvd_struct *s)
1833 u_char buf[4 + 188];
1834 struct packet_command cgc;
1835 struct cdrom_device_ops *cdo = cdi->ops;
1837 init_cdrom_command(&cgc, buf, sizeof(buf), CGC_DATA_READ);
1838 cgc.cmd[0] = GPCMD_READ_DVD_STRUCTURE;
1839 cgc.cmd[7] = s->type;
1840 cgc.cmd[9] = cgc.buflen & 0xff;
1842 if ((ret = cdo->generic_packet(cdi, &cgc)))
1845 s->bca.len = buf[0] << 8 | buf[1];
1846 if (s->bca.len < 12 || s->bca.len > 188) {
1847 cdinfo(CD_WARNING, "Received invalid BCA length (%d)\n", s->bca.len);
1850 memcpy(s->bca.value, &buf[4], s->bca.len);
1855 static int dvd_read_manufact(struct cdrom_device_info *cdi, dvd_struct *s)
1859 struct packet_command cgc;
1860 struct cdrom_device_ops *cdo = cdi->ops;
1862 size = sizeof(s->manufact.value) + 4;
1864 if ((buf = kmalloc(size, GFP_KERNEL)) == NULL)
1867 init_cdrom_command(&cgc, buf, size, CGC_DATA_READ);
1868 cgc.cmd[0] = GPCMD_READ_DVD_STRUCTURE;
1869 cgc.cmd[7] = s->type;
1870 cgc.cmd[8] = size >> 8;
1871 cgc.cmd[9] = size & 0xff;
1873 if ((ret = cdo->generic_packet(cdi, &cgc))) {
1878 s->manufact.len = buf[0] << 8 | buf[1];
1879 if (s->manufact.len < 0 || s->manufact.len > 2048) {
1880 cdinfo(CD_WARNING, "Received invalid manufacture info length"
1881 " (%d)\n", s->manufact.len);
1884 memcpy(s->manufact.value, &buf[4], s->manufact.len);
1891 static int dvd_read_struct(struct cdrom_device_info *cdi, dvd_struct *s)
1894 case DVD_STRUCT_PHYSICAL:
1895 return dvd_read_physical(cdi, s);
1897 case DVD_STRUCT_COPYRIGHT:
1898 return dvd_read_copyright(cdi, s);
1900 case DVD_STRUCT_DISCKEY:
1901 return dvd_read_disckey(cdi, s);
1903 case DVD_STRUCT_BCA:
1904 return dvd_read_bca(cdi, s);
1906 case DVD_STRUCT_MANUFACT:
1907 return dvd_read_manufact(cdi, s);
1910 cdinfo(CD_WARNING, ": Invalid DVD structure read requested (%d)\n",
1916 int cdrom_mode_sense(struct cdrom_device_info *cdi,
1917 struct packet_command *cgc,
1918 int page_code, int page_control)
1920 struct cdrom_device_ops *cdo = cdi->ops;
1922 memset(cgc->cmd, 0, sizeof(cgc->cmd));
1924 cgc->cmd[0] = GPCMD_MODE_SENSE_10;
1925 cgc->cmd[2] = page_code | (page_control << 6);
1926 cgc->cmd[7] = cgc->buflen >> 8;
1927 cgc->cmd[8] = cgc->buflen & 0xff;
1928 cgc->data_direction = CGC_DATA_READ;
1929 return cdo->generic_packet(cdi, cgc);
1932 int cdrom_mode_select(struct cdrom_device_info *cdi,
1933 struct packet_command *cgc)
1935 struct cdrom_device_ops *cdo = cdi->ops;
1937 memset(cgc->cmd, 0, sizeof(cgc->cmd));
1938 memset(cgc->buffer, 0, 2);
1939 cgc->cmd[0] = GPCMD_MODE_SELECT_10;
1940 cgc->cmd[1] = 0x10; /* PF */
1941 cgc->cmd[7] = cgc->buflen >> 8;
1942 cgc->cmd[8] = cgc->buflen & 0xff;
1943 cgc->data_direction = CGC_DATA_WRITE;
1944 return cdo->generic_packet(cdi, cgc);
1947 static int cdrom_read_subchannel(struct cdrom_device_info *cdi,
1948 struct cdrom_subchnl *subchnl, int mcn)
1950 struct cdrom_device_ops *cdo = cdi->ops;
1951 struct packet_command cgc;
1955 init_cdrom_command(&cgc, buffer, 16, CGC_DATA_READ);
1956 cgc.cmd[0] = GPCMD_READ_SUBCHANNEL;
1957 cgc.cmd[1] = 2; /* MSF addressing */
1958 cgc.cmd[2] = 0x40; /* request subQ data */
1959 cgc.cmd[3] = mcn ? 2 : 1;
1962 if ((ret = cdo->generic_packet(cdi, &cgc)))
1965 subchnl->cdsc_audiostatus = cgc.buffer[1];
1966 subchnl->cdsc_format = CDROM_MSF;
1967 subchnl->cdsc_ctrl = cgc.buffer[5] & 0xf;
1968 subchnl->cdsc_trk = cgc.buffer[6];
1969 subchnl->cdsc_ind = cgc.buffer[7];
1971 subchnl->cdsc_reladdr.msf.minute = cgc.buffer[13];
1972 subchnl->cdsc_reladdr.msf.second = cgc.buffer[14];
1973 subchnl->cdsc_reladdr.msf.frame = cgc.buffer[15];
1974 subchnl->cdsc_absaddr.msf.minute = cgc.buffer[9];
1975 subchnl->cdsc_absaddr.msf.second = cgc.buffer[10];
1976 subchnl->cdsc_absaddr.msf.frame = cgc.buffer[11];
1982 * Specific READ_10 interface
1984 static int cdrom_read_cd(struct cdrom_device_info *cdi,
1985 struct packet_command *cgc, int lba,
1986 int blocksize, int nblocks)
1988 struct cdrom_device_ops *cdo = cdi->ops;
1990 memset(&cgc->cmd, 0, sizeof(cgc->cmd));
1991 cgc->cmd[0] = GPCMD_READ_10;
1992 cgc->cmd[2] = (lba >> 24) & 0xff;
1993 cgc->cmd[3] = (lba >> 16) & 0xff;
1994 cgc->cmd[4] = (lba >> 8) & 0xff;
1995 cgc->cmd[5] = lba & 0xff;
1996 cgc->cmd[6] = (nblocks >> 16) & 0xff;
1997 cgc->cmd[7] = (nblocks >> 8) & 0xff;
1998 cgc->cmd[8] = nblocks & 0xff;
1999 cgc->buflen = blocksize * nblocks;
2000 return cdo->generic_packet(cdi, cgc);
2003 /* very generic interface for reading the various types of blocks */
2004 static int cdrom_read_block(struct cdrom_device_info *cdi,
2005 struct packet_command *cgc,
2006 int lba, int nblocks, int format, int blksize)
2008 struct cdrom_device_ops *cdo = cdi->ops;
2010 memset(&cgc->cmd, 0, sizeof(cgc->cmd));
2011 cgc->cmd[0] = GPCMD_READ_CD;
2012 /* expected sector size - cdda,mode1,etc. */
2013 cgc->cmd[1] = format << 2;
2014 /* starting address */
2015 cgc->cmd[2] = (lba >> 24) & 0xff;
2016 cgc->cmd[3] = (lba >> 16) & 0xff;
2017 cgc->cmd[4] = (lba >> 8) & 0xff;
2018 cgc->cmd[5] = lba & 0xff;
2019 /* number of blocks */
2020 cgc->cmd[6] = (nblocks >> 16) & 0xff;
2021 cgc->cmd[7] = (nblocks >> 8) & 0xff;
2022 cgc->cmd[8] = nblocks & 0xff;
2023 cgc->buflen = blksize * nblocks;
2025 /* set the header info returned */
2027 case CD_FRAMESIZE_RAW0 : cgc->cmd[9] = 0x58; break;
2028 case CD_FRAMESIZE_RAW1 : cgc->cmd[9] = 0x78; break;
2029 case CD_FRAMESIZE_RAW : cgc->cmd[9] = 0xf8; break;
2030 default : cgc->cmd[9] = 0x10;
2033 return cdo->generic_packet(cdi, cgc);
2036 static int cdrom_read_cdda_old(struct cdrom_device_info *cdi, __u8 __user *ubuf,
2037 int lba, int nframes)
2039 struct packet_command cgc;
2043 cdi->last_sense = 0;
2045 memset(&cgc, 0, sizeof(cgc));
2048 * start with will ra.nframes size, back down if alloc fails
2052 cgc.buffer = kmalloc(CD_FRAMESIZE_RAW * nr, GFP_KERNEL);
2062 if (!access_ok(VERIFY_WRITE, ubuf, nframes * CD_FRAMESIZE_RAW)) {
2067 cgc.data_direction = CGC_DATA_READ;
2068 while (nframes > 0) {
2072 ret = cdrom_read_block(cdi, &cgc, lba, nr, 1, CD_FRAMESIZE_RAW);
2075 if (__copy_to_user(ubuf, cgc.buffer, CD_FRAMESIZE_RAW * nr)) {
2079 ubuf += CD_FRAMESIZE_RAW * nr;
2088 static int cdrom_read_cdda_bpc(struct cdrom_device_info *cdi, __u8 __user *ubuf,
2089 int lba, int nframes)
2091 request_queue_t *q = cdi->disk->queue;
2100 rq = blk_get_request(q, READ, GFP_KERNEL);
2104 cdi->last_sense = 0;
2108 if (cdi->cdda_method == CDDA_BPC_SINGLE)
2110 if (nr * CD_FRAMESIZE_RAW > (q->max_sectors << 9))
2111 nr = (q->max_sectors << 9) / CD_FRAMESIZE_RAW;
2113 len = nr * CD_FRAMESIZE_RAW;
2115 ret = blk_rq_map_user(q, rq, ubuf, len);
2119 memset(rq->cmd, 0, sizeof(rq->cmd));
2120 rq->cmd[0] = GPCMD_READ_CD;
2121 rq->cmd[1] = 1 << 2;
2122 rq->cmd[2] = (lba >> 24) & 0xff;
2123 rq->cmd[3] = (lba >> 16) & 0xff;
2124 rq->cmd[4] = (lba >> 8) & 0xff;
2125 rq->cmd[5] = lba & 0xff;
2126 rq->cmd[6] = (nr >> 16) & 0xff;
2127 rq->cmd[7] = (nr >> 8) & 0xff;
2128 rq->cmd[8] = nr & 0xff;
2132 rq->cmd_type = REQ_TYPE_BLOCK_PC;
2133 rq->timeout = 60 * HZ;
2136 if (blk_execute_rq(q, cdi->disk, rq, 0)) {
2137 struct request_sense *s = rq->sense;
2139 cdi->last_sense = s->sense_key;
2142 if (blk_rq_unmap_user(bio))
2153 blk_put_request(rq);
2157 static int cdrom_read_cdda(struct cdrom_device_info *cdi, __u8 __user *ubuf,
2158 int lba, int nframes)
2162 if (cdi->cdda_method == CDDA_OLD)
2163 return cdrom_read_cdda_old(cdi, ubuf, lba, nframes);
2167 * for anything else than success and io error, we need to retry
2169 ret = cdrom_read_cdda_bpc(cdi, ubuf, lba, nframes);
2170 if (!ret || ret != -EIO)
2174 * I've seen drives get sense 4/8/3 udma crc errors on multi
2175 * frame dma, so drop to single frame dma if we need to
2177 if (cdi->cdda_method == CDDA_BPC_FULL && nframes > 1) {
2178 printk("cdrom: dropping to single frame dma\n");
2179 cdi->cdda_method = CDDA_BPC_SINGLE;
2184 * so we have an io error of some sort with multi frame dma. if the
2185 * condition wasn't a hardware error
2186 * problems, not for any error
2188 if (cdi->last_sense != 0x04 && cdi->last_sense != 0x0b)
2191 printk("cdrom: dropping to old style cdda (sense=%x)\n", cdi->last_sense);
2192 cdi->cdda_method = CDDA_OLD;
2193 return cdrom_read_cdda_old(cdi, ubuf, lba, nframes);
2196 static int cdrom_ioctl_multisession(struct cdrom_device_info *cdi,
2199 struct cdrom_multisession ms_info;
2200 u8 requested_format;
2203 cdinfo(CD_DO_IOCTL, "entering CDROMMULTISESSION\n");
2205 if (!(cdi->ops->capability & CDC_MULTI_SESSION))
2208 if (copy_from_user(&ms_info, argp, sizeof(ms_info)))
2211 requested_format = ms_info.addr_format;
2212 if (requested_format != CDROM_MSF && requested_format != CDROM_LBA)
2214 ms_info.addr_format = CDROM_LBA;
2216 ret = cdi->ops->get_last_session(cdi, &ms_info);
2220 sanitize_format(&ms_info.addr, &ms_info.addr_format, requested_format);
2222 if (copy_to_user(argp, &ms_info, sizeof(ms_info)))
2225 cdinfo(CD_DO_IOCTL, "CDROMMULTISESSION successful\n");
2229 static int cdrom_ioctl_eject(struct cdrom_device_info *cdi)
2231 cdinfo(CD_DO_IOCTL, "entering CDROMEJECT\n");
2233 if (!CDROM_CAN(CDC_OPEN_TRAY))
2235 if (cdi->use_count != 1 || keeplocked)
2237 if (CDROM_CAN(CDC_LOCK)) {
2238 int ret = cdi->ops->lock_door(cdi, 0);
2243 return cdi->ops->tray_move(cdi, 1);
2246 static int cdrom_ioctl_closetray(struct cdrom_device_info *cdi)
2248 cdinfo(CD_DO_IOCTL, "entering CDROMCLOSETRAY\n");
2250 if (!CDROM_CAN(CDC_CLOSE_TRAY))
2252 return cdi->ops->tray_move(cdi, 0);
2255 static int cdrom_ioctl_eject_sw(struct cdrom_device_info *cdi,
2258 cdinfo(CD_DO_IOCTL, "entering CDROMEJECT_SW\n");
2260 if (!CDROM_CAN(CDC_OPEN_TRAY))
2265 cdi->options &= ~(CDO_AUTO_CLOSE | CDO_AUTO_EJECT);
2267 cdi->options |= CDO_AUTO_CLOSE | CDO_AUTO_EJECT;
2271 static int cdrom_ioctl_media_changed(struct cdrom_device_info *cdi,
2274 struct cdrom_changer_info *info;
2277 cdinfo(CD_DO_IOCTL, "entering CDROM_MEDIA_CHANGED\n");
2279 if (!CDROM_CAN(CDC_MEDIA_CHANGED))
2282 /* cannot select disc or select current disc */
2283 if (!CDROM_CAN(CDC_SELECT_DISC) || arg == CDSL_CURRENT)
2284 return media_changed(cdi, 1);
2286 if ((unsigned int)arg >= cdi->capacity)
2289 info = kmalloc(sizeof(*info), GFP_KERNEL);
2293 ret = cdrom_read_mech_status(cdi, info);
2295 ret = info->slots[arg].change;
2300 static int cdrom_ioctl_set_options(struct cdrom_device_info *cdi,
2303 cdinfo(CD_DO_IOCTL, "entering CDROM_SET_OPTIONS\n");
2306 * Options need to be in sync with capability.
2307 * Too late for that, so we have to check each one separately.
2310 case CDO_USE_FFLAGS:
2311 case CDO_CHECK_TYPE:
2314 if (!CDROM_CAN(CDC_LOCK))
2318 return cdi->options;
2319 /* default is basically CDO_[AUTO_CLOSE|AUTO_EJECT] */
2321 if (!CDROM_CAN(arg))
2324 cdi->options |= (int) arg;
2325 return cdi->options;
2328 static int cdrom_ioctl_clear_options(struct cdrom_device_info *cdi,
2331 cdinfo(CD_DO_IOCTL, "entering CDROM_CLEAR_OPTIONS\n");
2333 cdi->options &= ~(int) arg;
2334 return cdi->options;
2337 static int cdrom_ioctl_select_speed(struct cdrom_device_info *cdi,
2340 cdinfo(CD_DO_IOCTL, "entering CDROM_SELECT_SPEED\n");
2342 if (!CDROM_CAN(CDC_SELECT_SPEED))
2344 return cdi->ops->select_speed(cdi, arg);
2347 static int cdrom_ioctl_select_disc(struct cdrom_device_info *cdi,
2350 cdinfo(CD_DO_IOCTL, "entering CDROM_SELECT_DISC\n");
2352 if (!CDROM_CAN(CDC_SELECT_DISC))
2355 if (arg != CDSL_CURRENT && arg != CDSL_NONE) {
2356 if ((int)arg >= cdi->capacity)
2361 * ->select_disc is a hook to allow a driver-specific way of
2362 * seleting disc. However, since there is no equivalent hook for
2363 * cdrom_slot_status this may not actually be useful...
2365 if (cdi->ops->select_disc)
2366 return cdi->ops->select_disc(cdi, arg);
2368 cdinfo(CD_CHANGER, "Using generic cdrom_select_disc()\n");
2369 return cdrom_select_disc(cdi, arg);
2372 static int cdrom_ioctl_reset(struct cdrom_device_info *cdi,
2373 struct block_device *bdev)
2375 cdinfo(CD_DO_IOCTL, "entering CDROM_RESET\n");
2377 if (!capable(CAP_SYS_ADMIN))
2379 if (!CDROM_CAN(CDC_RESET))
2381 invalidate_bdev(bdev, 0);
2382 return cdi->ops->reset(cdi);
2385 static int cdrom_ioctl_lock_door(struct cdrom_device_info *cdi,
2388 cdinfo(CD_DO_IOCTL, "%socking door.\n", arg ? "L" : "Unl");
2390 if (!CDROM_CAN(CDC_LOCK))
2391 return -EDRIVE_CANT_DO_THIS;
2393 keeplocked = arg ? 1 : 0;
2396 * Don't unlock the door on multiple opens by default, but allow
2399 if (cdi->use_count != 1 && !arg && !capable(CAP_SYS_ADMIN))
2401 return cdi->ops->lock_door(cdi, arg);
2404 static int cdrom_ioctl_debug(struct cdrom_device_info *cdi,
2407 cdinfo(CD_DO_IOCTL, "%sabling debug.\n", arg ? "En" : "Dis");
2409 if (!capable(CAP_SYS_ADMIN))
2411 debug = arg ? 1 : 0;
2415 static int cdrom_ioctl_get_capability(struct cdrom_device_info *cdi)
2417 cdinfo(CD_DO_IOCTL, "entering CDROM_GET_CAPABILITY\n");
2418 return (cdi->ops->capability & ~cdi->mask);
2422 * The following function is implemented, although very few audio
2423 * discs give Universal Product Code information, which should just be
2424 * the Medium Catalog Number on the box. Note, that the way the code
2425 * is written on the CD is /not/ uniform across all discs!
2427 static int cdrom_ioctl_get_mcn(struct cdrom_device_info *cdi,
2430 struct cdrom_mcn mcn;
2433 cdinfo(CD_DO_IOCTL, "entering CDROM_GET_MCN\n");
2435 if (!(cdi->ops->capability & CDC_MCN))
2437 ret = cdi->ops->get_mcn(cdi, &mcn);
2441 if (copy_to_user(argp, &mcn, sizeof(mcn)))
2443 cdinfo(CD_DO_IOCTL, "CDROM_GET_MCN successful\n");
2447 static int cdrom_ioctl_drive_status(struct cdrom_device_info *cdi,
2450 cdinfo(CD_DO_IOCTL, "entering CDROM_DRIVE_STATUS\n");
2452 if (!(cdi->ops->capability & CDC_DRIVE_STATUS))
2454 if (!CDROM_CAN(CDC_SELECT_DISC) ||
2455 (arg == CDSL_CURRENT || arg == CDSL_NONE))
2456 return cdi->ops->drive_status(cdi, CDSL_CURRENT);
2457 if (((int)arg >= cdi->capacity))
2459 return cdrom_slot_status(cdi, arg);
2463 * Ok, this is where problems start. The current interface for the
2464 * CDROM_DISC_STATUS ioctl is flawed. It makes the false assumption that
2465 * CDs are all CDS_DATA_1 or all CDS_AUDIO, etc. Unfortunatly, while this
2466 * is often the case, it is also very common for CDs to have some tracks
2467 * with data, and some tracks with audio. Just because I feel like it,
2468 * I declare the following to be the best way to cope. If the CD has ANY
2469 * data tracks on it, it will be returned as a data CD. If it has any XA
2470 * tracks, I will return it as that. Now I could simplify this interface
2471 * by combining these returns with the above, but this more clearly
2472 * demonstrates the problem with the current interface. Too bad this
2473 * wasn't designed to use bitmasks... -Erik
2475 * Well, now we have the option CDS_MIXED: a mixed-type CD.
2476 * User level programmers might feel the ioctl is not very useful.
2479 static int cdrom_ioctl_disc_status(struct cdrom_device_info *cdi)
2483 cdinfo(CD_DO_IOCTL, "entering CDROM_DISC_STATUS\n");
2485 cdrom_count_tracks(cdi, &tracks);
2487 return tracks.error;
2489 /* Policy mode on */
2490 if (tracks.audio > 0) {
2491 if (!tracks.data && !tracks.cdi && !tracks.xa)
2501 if (tracks.data > 0)
2503 /* Policy mode off */
2505 cdinfo(CD_WARNING,"This disc doesn't have any tracks I recognize!\n");
2509 static int cdrom_ioctl_changer_nslots(struct cdrom_device_info *cdi)
2511 cdinfo(CD_DO_IOCTL, "entering CDROM_CHANGER_NSLOTS\n");
2512 return cdi->capacity;
2515 static int cdrom_ioctl_get_subchnl(struct cdrom_device_info *cdi,
2518 struct cdrom_subchnl q;
2522 /* cdinfo(CD_DO_IOCTL,"entering CDROMSUBCHNL\n");*/
2524 if (!CDROM_CAN(CDC_PLAY_AUDIO))
2526 if (copy_from_user(&q, argp, sizeof(q)))
2529 requested = q.cdsc_format;
2530 if (requested != CDROM_MSF && requested != CDROM_LBA)
2532 q.cdsc_format = CDROM_MSF;
2534 ret = cdi->ops->audio_ioctl(cdi, CDROMSUBCHNL, &q);
2538 back = q.cdsc_format; /* local copy */
2539 sanitize_format(&q.cdsc_absaddr, &back, requested);
2540 sanitize_format(&q.cdsc_reladdr, &q.cdsc_format, requested);
2542 if (copy_to_user(argp, &q, sizeof(q)))
2544 /* cdinfo(CD_DO_IOCTL, "CDROMSUBCHNL successful\n"); */
2548 static int cdrom_ioctl_read_tochdr(struct cdrom_device_info *cdi,
2551 struct cdrom_tochdr header;
2554 /* cdinfo(CD_DO_IOCTL, "entering CDROMREADTOCHDR\n"); */
2556 if (!CDROM_CAN(CDC_PLAY_AUDIO))
2558 if (copy_from_user(&header, argp, sizeof(header)))
2561 ret = cdi->ops->audio_ioctl(cdi, CDROMREADTOCHDR, &header);
2565 if (copy_to_user(argp, &header, sizeof(header)))
2567 /* cdinfo(CD_DO_IOCTL, "CDROMREADTOCHDR successful\n"); */
2571 static int cdrom_ioctl_read_tocentry(struct cdrom_device_info *cdi,
2574 struct cdrom_tocentry entry;
2575 u8 requested_format;
2578 /* cdinfo(CD_DO_IOCTL, "entering CDROMREADTOCENTRY\n"); */
2580 if (!CDROM_CAN(CDC_PLAY_AUDIO))
2582 if (copy_from_user(&entry, argp, sizeof(entry)))
2585 requested_format = entry.cdte_format;
2586 if (requested_format != CDROM_MSF && requested_format != CDROM_LBA)
2588 /* make interface to low-level uniform */
2589 entry.cdte_format = CDROM_MSF;
2590 ret = cdi->ops->audio_ioctl(cdi, CDROMREADTOCENTRY, &entry);
2593 sanitize_format(&entry.cdte_addr, &entry.cdte_format, requested_format);
2595 if (copy_to_user(argp, &entry, sizeof(entry)))
2597 /* cdinfo(CD_DO_IOCTL, "CDROMREADTOCENTRY successful\n"); */
2601 static int cdrom_ioctl_play_msf(struct cdrom_device_info *cdi,
2604 struct cdrom_msf msf;
2606 cdinfo(CD_DO_IOCTL, "entering CDROMPLAYMSF\n");
2608 if (!CDROM_CAN(CDC_PLAY_AUDIO))
2610 if (copy_from_user(&msf, argp, sizeof(msf)))
2612 return cdi->ops->audio_ioctl(cdi, CDROMPLAYMSF, &msf);
2615 static int cdrom_ioctl_play_trkind(struct cdrom_device_info *cdi,
2621 cdinfo(CD_DO_IOCTL, "entering CDROMPLAYTRKIND\n");
2623 if (!CDROM_CAN(CDC_PLAY_AUDIO))
2625 if (copy_from_user(&ti, argp, sizeof(ti)))
2628 ret = check_for_audio_disc(cdi, cdi->ops);
2631 return cdi->ops->audio_ioctl(cdi, CDROMPLAYTRKIND, &ti);
2633 static int cdrom_ioctl_volctrl(struct cdrom_device_info *cdi,
2636 struct cdrom_volctrl volume;
2638 cdinfo(CD_DO_IOCTL, "entering CDROMVOLCTRL\n");
2640 if (!CDROM_CAN(CDC_PLAY_AUDIO))
2642 if (copy_from_user(&volume, argp, sizeof(volume)))
2644 return cdi->ops->audio_ioctl(cdi, CDROMVOLCTRL, &volume);
2647 static int cdrom_ioctl_volread(struct cdrom_device_info *cdi,
2650 struct cdrom_volctrl volume;
2653 cdinfo(CD_DO_IOCTL, "entering CDROMVOLREAD\n");
2655 if (!CDROM_CAN(CDC_PLAY_AUDIO))
2658 ret = cdi->ops->audio_ioctl(cdi, CDROMVOLREAD, &volume);
2662 if (copy_to_user(argp, &volume, sizeof(volume)))
2667 static int cdrom_ioctl_audioctl(struct cdrom_device_info *cdi,
2672 cdinfo(CD_DO_IOCTL, "doing audio ioctl (start/stop/pause/resume)\n");
2674 if (!CDROM_CAN(CDC_PLAY_AUDIO))
2676 ret = check_for_audio_disc(cdi, cdi->ops);
2679 return cdi->ops->audio_ioctl(cdi, cmd, NULL);
2683 * Just about every imaginable ioctl is supported in the Uniform layer
2685 * ATAPI / SCSI specific code now mainly resides in mmc_ioctl().
2687 int cdrom_ioctl(struct file * file, struct cdrom_device_info *cdi,
2688 struct inode *ip, unsigned int cmd, unsigned long arg)
2690 void __user *argp = (void __user *)arg;
2694 * Try the generic SCSI command ioctl's first.
2696 ret = scsi_cmd_ioctl(file, ip->i_bdev->bd_disk, cmd, argp);
2701 case CDROMMULTISESSION:
2702 return cdrom_ioctl_multisession(cdi, argp);
2704 return cdrom_ioctl_eject(cdi);
2705 case CDROMCLOSETRAY:
2706 return cdrom_ioctl_closetray(cdi);
2708 return cdrom_ioctl_eject_sw(cdi, arg);
2709 case CDROM_MEDIA_CHANGED:
2710 return cdrom_ioctl_media_changed(cdi, arg);
2711 case CDROM_SET_OPTIONS:
2712 return cdrom_ioctl_set_options(cdi, arg);
2713 case CDROM_CLEAR_OPTIONS:
2714 return cdrom_ioctl_clear_options(cdi, arg);
2715 case CDROM_SELECT_SPEED:
2716 return cdrom_ioctl_select_speed(cdi, arg);
2717 case CDROM_SELECT_DISC:
2718 return cdrom_ioctl_select_disc(cdi, arg);
2720 return cdrom_ioctl_reset(cdi, ip->i_bdev);
2721 case CDROM_LOCKDOOR:
2722 return cdrom_ioctl_lock_door(cdi, arg);
2724 return cdrom_ioctl_debug(cdi, arg);
2725 case CDROM_GET_CAPABILITY:
2726 return cdrom_ioctl_get_capability(cdi);
2728 return cdrom_ioctl_get_mcn(cdi, argp);
2729 case CDROM_DRIVE_STATUS:
2730 return cdrom_ioctl_drive_status(cdi, arg);
2731 case CDROM_DISC_STATUS:
2732 return cdrom_ioctl_disc_status(cdi);
2733 case CDROM_CHANGER_NSLOTS:
2734 return cdrom_ioctl_changer_nslots(cdi);
2738 * Use the ioctls that are implemented through the generic_packet()
2739 * interface. this may look at bit funny, but if -ENOTTY is
2740 * returned that particular ioctl is not implemented and we
2741 * let it go through the device specific ones.
2743 if (CDROM_CAN(CDC_GENERIC_PACKET)) {
2744 ret = mmc_ioctl(cdi, cmd, arg);
2750 * Note: most of the cdinfo() calls are commented out here,
2751 * because they fill up the sys log when CD players poll
2756 return cdrom_ioctl_get_subchnl(cdi, argp);
2757 case CDROMREADTOCHDR:
2758 return cdrom_ioctl_read_tochdr(cdi, argp);
2759 case CDROMREADTOCENTRY:
2760 return cdrom_ioctl_read_tocentry(cdi, argp);
2762 return cdrom_ioctl_play_msf(cdi, argp);
2763 case CDROMPLAYTRKIND:
2764 return cdrom_ioctl_play_trkind(cdi, argp);
2766 return cdrom_ioctl_volctrl(cdi, argp);
2768 return cdrom_ioctl_volread(cdi, argp);
2773 return cdrom_ioctl_audioctl(cdi, cmd);
2780 int msf_to_lba(char m, char s, char f)
2782 return (((m * CD_SECS) + s) * CD_FRAMES + f) - CD_MSF_OFFSET;
2786 * Required when we need to use READ_10 to issue other than 2048 block
2789 static int cdrom_switch_blocksize(struct cdrom_device_info *cdi, int size)
2791 struct cdrom_device_ops *cdo = cdi->ops;
2792 struct packet_command cgc;
2793 struct modesel_head mh;
2795 memset(&mh, 0, sizeof(mh));
2796 mh.block_desc_length = 0x08;
2797 mh.block_length_med = (size >> 8) & 0xff;
2798 mh.block_length_lo = size & 0xff;
2800 memset(&cgc, 0, sizeof(cgc));
2802 cgc.cmd[1] = 1 << 4;
2804 cgc.buflen = sizeof(mh);
2805 cgc.buffer = (char *) &mh;
2806 cgc.data_direction = CGC_DATA_WRITE;
2807 mh.block_desc_length = 0x08;
2808 mh.block_length_med = (size >> 8) & 0xff;
2809 mh.block_length_lo = size & 0xff;
2811 return cdo->generic_packet(cdi, &cgc);
2814 static int mmc_ioctl(struct cdrom_device_info *cdi, unsigned int cmd,
2817 struct cdrom_device_ops *cdo = cdi->ops;
2818 struct packet_command cgc;
2819 struct request_sense sense;
2820 unsigned char buffer[32];
2823 memset(&cgc, 0, sizeof(cgc));
2825 /* build a unified command and queue it through
2826 cdo->generic_packet() */
2829 case CDROMREADMODE1:
2830 case CDROMREADMODE2: {
2831 struct cdrom_msf msf;
2832 int blocksize = 0, format = 0, lba;
2836 blocksize = CD_FRAMESIZE_RAW;
2838 case CDROMREADMODE1:
2839 blocksize = CD_FRAMESIZE;
2842 case CDROMREADMODE2:
2843 blocksize = CD_FRAMESIZE_RAW0;
2846 IOCTL_IN(arg, struct cdrom_msf, msf);
2847 lba = msf_to_lba(msf.cdmsf_min0,msf.cdmsf_sec0,msf.cdmsf_frame0);
2848 /* FIXME: we need upper bound checking, too!! */
2851 cgc.buffer = kmalloc(blocksize, GFP_KERNEL);
2852 if (cgc.buffer == NULL)
2854 memset(&sense, 0, sizeof(sense));
2856 cgc.data_direction = CGC_DATA_READ;
2857 ret = cdrom_read_block(cdi, &cgc, lba, 1, format, blocksize);
2858 if (ret && sense.sense_key==0x05 && sense.asc==0x20 && sense.ascq==0x00) {
2860 * SCSI-II devices are not required to support
2861 * READ_CD, so let's try switching block size
2863 /* FIXME: switch back again... */
2864 if ((ret = cdrom_switch_blocksize(cdi, blocksize))) {
2869 ret = cdrom_read_cd(cdi, &cgc, lba, blocksize, 1);
2870 ret |= cdrom_switch_blocksize(cdi, blocksize);
2872 if (!ret && copy_to_user((char __user *)arg, cgc.buffer, blocksize))
2877 case CDROMREADAUDIO: {
2878 struct cdrom_read_audio ra;
2881 IOCTL_IN(arg, struct cdrom_read_audio, ra);
2883 if (ra.addr_format == CDROM_MSF)
2884 lba = msf_to_lba(ra.addr.msf.minute,
2887 else if (ra.addr_format == CDROM_LBA)
2892 /* FIXME: we need upper bound checking, too!! */
2893 if (lba < 0 || ra.nframes <= 0 || ra.nframes > CD_FRAMES)
2896 return cdrom_read_cdda(cdi, ra.buf, lba, ra.nframes);
2898 case CDROMSUBCHNL: {
2899 struct cdrom_subchnl q;
2900 u_char requested, back;
2901 IOCTL_IN(arg, struct cdrom_subchnl, q);
2902 requested = q.cdsc_format;
2903 if (!((requested == CDROM_MSF) ||
2904 (requested == CDROM_LBA)))
2906 q.cdsc_format = CDROM_MSF;
2907 if ((ret = cdrom_read_subchannel(cdi, &q, 0)))
2909 back = q.cdsc_format; /* local copy */
2910 sanitize_format(&q.cdsc_absaddr, &back, requested);
2911 sanitize_format(&q.cdsc_reladdr, &q.cdsc_format, requested);
2912 IOCTL_OUT(arg, struct cdrom_subchnl, q);
2913 /* cdinfo(CD_DO_IOCTL, "CDROMSUBCHNL successful\n"); */
2916 case CDROMPLAYMSF: {
2917 struct cdrom_msf msf;
2918 cdinfo(CD_DO_IOCTL, "entering CDROMPLAYMSF\n");
2919 IOCTL_IN(arg, struct cdrom_msf, msf);
2920 cgc.cmd[0] = GPCMD_PLAY_AUDIO_MSF;
2921 cgc.cmd[3] = msf.cdmsf_min0;
2922 cgc.cmd[4] = msf.cdmsf_sec0;
2923 cgc.cmd[5] = msf.cdmsf_frame0;
2924 cgc.cmd[6] = msf.cdmsf_min1;
2925 cgc.cmd[7] = msf.cdmsf_sec1;
2926 cgc.cmd[8] = msf.cdmsf_frame1;
2927 cgc.data_direction = CGC_DATA_NONE;
2928 return cdo->generic_packet(cdi, &cgc);
2930 case CDROMPLAYBLK: {
2931 struct cdrom_blk blk;
2932 cdinfo(CD_DO_IOCTL, "entering CDROMPLAYBLK\n");
2933 IOCTL_IN(arg, struct cdrom_blk, blk);
2934 cgc.cmd[0] = GPCMD_PLAY_AUDIO_10;
2935 cgc.cmd[2] = (blk.from >> 24) & 0xff;
2936 cgc.cmd[3] = (blk.from >> 16) & 0xff;
2937 cgc.cmd[4] = (blk.from >> 8) & 0xff;
2938 cgc.cmd[5] = blk.from & 0xff;
2939 cgc.cmd[7] = (blk.len >> 8) & 0xff;
2940 cgc.cmd[8] = blk.len & 0xff;
2941 cgc.data_direction = CGC_DATA_NONE;
2942 return cdo->generic_packet(cdi, &cgc);
2945 case CDROMVOLREAD: {
2946 struct cdrom_volctrl volctrl;
2947 char mask[sizeof(buffer)];
2948 unsigned short offset;
2950 cdinfo(CD_DO_IOCTL, "entering CDROMVOLUME\n");
2952 IOCTL_IN(arg, struct cdrom_volctrl, volctrl);
2954 cgc.buffer = buffer;
2956 if ((ret = cdrom_mode_sense(cdi, &cgc, GPMODE_AUDIO_CTL_PAGE, 0)))
2959 /* originally the code depended on buffer[1] to determine
2960 how much data is available for transfer. buffer[1] is
2961 unfortunately ambigious and the only reliable way seem
2962 to be to simply skip over the block descriptor... */
2963 offset = 8 + be16_to_cpu(*(__be16 *)(buffer+6));
2965 if (offset + 16 > sizeof(buffer))
2968 if (offset + 16 > cgc.buflen) {
2969 cgc.buflen = offset+16;
2970 ret = cdrom_mode_sense(cdi, &cgc,
2971 GPMODE_AUDIO_CTL_PAGE, 0);
2977 if ((buffer[offset] & 0x3f) != GPMODE_AUDIO_CTL_PAGE ||
2978 buffer[offset+1] < 14)
2981 /* now we have the current volume settings. if it was only
2982 a CDROMVOLREAD, return these values */
2983 if (cmd == CDROMVOLREAD) {
2984 volctrl.channel0 = buffer[offset+9];
2985 volctrl.channel1 = buffer[offset+11];
2986 volctrl.channel2 = buffer[offset+13];
2987 volctrl.channel3 = buffer[offset+15];
2988 IOCTL_OUT(arg, struct cdrom_volctrl, volctrl);
2992 /* get the volume mask */
2994 if ((ret = cdrom_mode_sense(cdi, &cgc,
2995 GPMODE_AUDIO_CTL_PAGE, 1)))
2998 buffer[offset+9] = volctrl.channel0 & mask[offset+9];
2999 buffer[offset+11] = volctrl.channel1 & mask[offset+11];
3000 buffer[offset+13] = volctrl.channel2 & mask[offset+13];
3001 buffer[offset+15] = volctrl.channel3 & mask[offset+15];
3004 cgc.buffer = buffer + offset - 8;
3005 memset(cgc.buffer, 0, 8);
3006 return cdrom_mode_select(cdi, &cgc);
3011 cdinfo(CD_DO_IOCTL, "entering CDROMSTART/CDROMSTOP\n");
3012 cgc.cmd[0] = GPCMD_START_STOP_UNIT;
3014 cgc.cmd[4] = (cmd == CDROMSTART) ? 1 : 0;
3015 cgc.data_direction = CGC_DATA_NONE;
3016 return cdo->generic_packet(cdi, &cgc);
3021 cdinfo(CD_DO_IOCTL, "entering CDROMPAUSE/CDROMRESUME\n");
3022 cgc.cmd[0] = GPCMD_PAUSE_RESUME;
3023 cgc.cmd[8] = (cmd == CDROMRESUME) ? 1 : 0;
3024 cgc.data_direction = CGC_DATA_NONE;
3025 return cdo->generic_packet(cdi, &cgc);
3028 case DVD_READ_STRUCT: {
3030 int size = sizeof(dvd_struct);
3031 if (!CDROM_CAN(CDC_DVD))
3033 if ((s = kmalloc(size, GFP_KERNEL)) == NULL)
3035 cdinfo(CD_DO_IOCTL, "entering DVD_READ_STRUCT\n");
3036 if (copy_from_user(s, (dvd_struct __user *)arg, size)) {
3040 if ((ret = dvd_read_struct(cdi, s))) {
3044 if (copy_to_user((dvd_struct __user *)arg, s, size))
3052 if (!CDROM_CAN(CDC_DVD))
3054 cdinfo(CD_DO_IOCTL, "entering DVD_AUTH\n");
3055 IOCTL_IN(arg, dvd_authinfo, ai);
3056 if ((ret = dvd_do_auth (cdi, &ai)))
3058 IOCTL_OUT(arg, dvd_authinfo, ai);
3062 case CDROM_NEXT_WRITABLE: {
3064 cdinfo(CD_DO_IOCTL, "entering CDROM_NEXT_WRITABLE\n");
3065 if ((ret = cdrom_get_next_writable(cdi, &next)))
3067 IOCTL_OUT(arg, long, next);
3070 case CDROM_LAST_WRITTEN: {
3072 cdinfo(CD_DO_IOCTL, "entering CDROM_LAST_WRITTEN\n");
3073 if ((ret = cdrom_get_last_written(cdi, &last)))
3075 IOCTL_OUT(arg, long, last);
3083 static int cdrom_get_track_info(struct cdrom_device_info *cdi, __u16 track, __u8 type,
3084 track_information *ti)
3086 struct cdrom_device_ops *cdo = cdi->ops;
3087 struct packet_command cgc;
3090 init_cdrom_command(&cgc, ti, 8, CGC_DATA_READ);
3091 cgc.cmd[0] = GPCMD_READ_TRACK_RZONE_INFO;
3092 cgc.cmd[1] = type & 3;
3093 cgc.cmd[4] = (track & 0xff00) >> 8;
3094 cgc.cmd[5] = track & 0xff;
3098 if ((ret = cdo->generic_packet(cdi, &cgc)))
3101 buflen = be16_to_cpu(ti->track_information_length) +
3102 sizeof(ti->track_information_length);
3104 if (buflen > sizeof(track_information))
3105 buflen = sizeof(track_information);
3107 cgc.cmd[8] = cgc.buflen = buflen;
3108 if ((ret = cdo->generic_packet(cdi, &cgc)))
3111 /* return actual fill size */
3115 /* requires CD R/RW */
3116 static int cdrom_get_disc_info(struct cdrom_device_info *cdi, disc_information *di)
3118 struct cdrom_device_ops *cdo = cdi->ops;
3119 struct packet_command cgc;
3122 /* set up command and get the disc info */
3123 init_cdrom_command(&cgc, di, sizeof(*di), CGC_DATA_READ);
3124 cgc.cmd[0] = GPCMD_READ_DISC_INFO;
3125 cgc.cmd[8] = cgc.buflen = 2;
3128 if ((ret = cdo->generic_packet(cdi, &cgc)))
3131 /* not all drives have the same disc_info length, so requeue
3132 * packet with the length the drive tells us it can supply
3134 buflen = be16_to_cpu(di->disc_information_length) +
3135 sizeof(di->disc_information_length);
3137 if (buflen > sizeof(disc_information))
3138 buflen = sizeof(disc_information);
3140 cgc.cmd[8] = cgc.buflen = buflen;
3141 if ((ret = cdo->generic_packet(cdi, &cgc)))
3144 /* return actual fill size */
3148 /* return the last written block on the CD-R media. this is for the udf
3150 int cdrom_get_last_written(struct cdrom_device_info *cdi, long *last_written)
3152 struct cdrom_tocentry toc;
3153 disc_information di;
3154 track_information ti;
3156 int ret = -1, ti_size;
3158 if (!CDROM_CAN(CDC_GENERIC_PACKET))
3161 ret = cdrom_get_disc_info(cdi, &di);
3162 if (ret < (int)(offsetof(typeof(di), last_track_lsb)
3163 + sizeof(di.last_track_lsb)))
3166 /* if unit didn't return msb, it's zeroed by cdrom_get_disc_info */
3167 last_track = (di.last_track_msb << 8) | di.last_track_lsb;
3168 ti_size = cdrom_get_track_info(cdi, last_track, 1, &ti);
3169 if (ti_size < (int)offsetof(typeof(ti), track_start))
3172 /* if this track is blank, try the previous. */
3177 ti_size = cdrom_get_track_info(cdi, last_track, 1, &ti);
3180 if (ti_size < (int)(offsetof(typeof(ti), track_size)
3181 + sizeof(ti.track_size)))
3184 /* if last recorded field is valid, return it. */
3185 if (ti.lra_v && ti_size >= (int)(offsetof(typeof(ti), last_rec_address)
3186 + sizeof(ti.last_rec_address))) {
3187 *last_written = be32_to_cpu(ti.last_rec_address);
3189 /* make it up instead */
3190 *last_written = be32_to_cpu(ti.track_start) +
3191 be32_to_cpu(ti.track_size);
3193 *last_written -= (be32_to_cpu(ti.free_blocks) + 7);
3197 /* this is where we end up if the drive either can't do a
3198 GPCMD_READ_DISC_INFO or GPCMD_READ_TRACK_RZONE_INFO or if
3199 it doesn't give enough information or fails. then we return
3200 the toc contents. */
3202 toc.cdte_format = CDROM_MSF;
3203 toc.cdte_track = CDROM_LEADOUT;
3204 if ((ret = cdi->ops->audio_ioctl(cdi, CDROMREADTOCENTRY, &toc)))
3206 sanitize_format(&toc.cdte_addr, &toc.cdte_format, CDROM_LBA);
3207 *last_written = toc.cdte_addr.lba;
3211 /* return the next writable block. also for udf file system. */
3212 static int cdrom_get_next_writable(struct cdrom_device_info *cdi, long *next_writable)
3214 disc_information di;
3215 track_information ti;
3219 if (!CDROM_CAN(CDC_GENERIC_PACKET))
3220 goto use_last_written;
3222 ret = cdrom_get_disc_info(cdi, &di);
3223 if (ret < 0 || ret < offsetof(typeof(di), last_track_lsb)
3224 + sizeof(di.last_track_lsb))
3225 goto use_last_written;
3227 /* if unit didn't return msb, it's zeroed by cdrom_get_disc_info */
3228 last_track = (di.last_track_msb << 8) | di.last_track_lsb;
3229 ti_size = cdrom_get_track_info(cdi, last_track, 1, &ti);
3230 if (ti_size < 0 || ti_size < offsetof(typeof(ti), track_start))
3231 goto use_last_written;
3233 /* if this track is blank, try the previous. */
3235 if (last_track == 1)
3236 goto use_last_written;
3238 ti_size = cdrom_get_track_info(cdi, last_track, 1, &ti);
3240 goto use_last_written;
3243 /* if next recordable address field is valid, use it. */
3244 if (ti.nwa_v && ti_size >= offsetof(typeof(ti), next_writable)
3245 + sizeof(ti.next_writable)) {
3246 *next_writable = be32_to_cpu(ti.next_writable);
3251 if ((ret = cdrom_get_last_written(cdi, next_writable))) {
3255 *next_writable += 7;
3260 EXPORT_SYMBOL(cdrom_get_last_written);
3261 EXPORT_SYMBOL(register_cdrom);
3262 EXPORT_SYMBOL(unregister_cdrom);
3263 EXPORT_SYMBOL(cdrom_open);
3264 EXPORT_SYMBOL(cdrom_release);
3265 EXPORT_SYMBOL(cdrom_ioctl);
3266 EXPORT_SYMBOL(cdrom_media_changed);
3267 EXPORT_SYMBOL(cdrom_number_of_slots);
3268 EXPORT_SYMBOL(cdrom_mode_select);
3269 EXPORT_SYMBOL(cdrom_mode_sense);
3270 EXPORT_SYMBOL(init_cdrom_command);
3271 EXPORT_SYMBOL(cdrom_get_media_event);
3273 #ifdef CONFIG_SYSCTL
3275 #define CDROM_STR_SIZE 1000
3277 static struct cdrom_sysctl_settings {
3278 char info[CDROM_STR_SIZE]; /* general info */
3279 int autoclose; /* close tray upon mount, etc */
3280 int autoeject; /* eject on umount */
3281 int debug; /* turn on debugging messages */
3282 int lock; /* lock the door on device open */
3283 int check; /* check media type */
3284 } cdrom_sysctl_settings;
3286 static int cdrom_sysctl_info(ctl_table *ctl, int write, struct file * filp,
3287 void __user *buffer, size_t *lenp, loff_t *ppos)
3290 struct cdrom_device_info *cdi;
3291 char *info = cdrom_sysctl_settings.info;
3293 if (!*lenp || (*ppos && !write)) {
3298 pos = sprintf(info, "CD-ROM information, " VERSION "\n");
3300 pos += sprintf(info+pos, "\ndrive name:\t");
3301 for (cdi=topCdromPtr;cdi!=NULL;cdi=cdi->next)
3302 pos += sprintf(info+pos, "\t%s", cdi->name);
3304 pos += sprintf(info+pos, "\ndrive speed:\t");
3305 for (cdi=topCdromPtr;cdi!=NULL;cdi=cdi->next)
3306 pos += sprintf(info+pos, "\t%d", cdi->speed);
3308 pos += sprintf(info+pos, "\ndrive # of slots:");
3309 for (cdi=topCdromPtr;cdi!=NULL;cdi=cdi->next)
3310 pos += sprintf(info+pos, "\t%d", cdi->capacity);
3312 pos += sprintf(info+pos, "\nCan close tray:\t");
3313 for (cdi=topCdromPtr;cdi!=NULL;cdi=cdi->next)
3314 pos += sprintf(info+pos, "\t%d", CDROM_CAN(CDC_CLOSE_TRAY) != 0);
3316 pos += sprintf(info+pos, "\nCan open tray:\t");
3317 for (cdi=topCdromPtr;cdi!=NULL;cdi=cdi->next)
3318 pos += sprintf(info+pos, "\t%d", CDROM_CAN(CDC_OPEN_TRAY) != 0);
3320 pos += sprintf(info+pos, "\nCan lock tray:\t");
3321 for (cdi=topCdromPtr;cdi!=NULL;cdi=cdi->next)
3322 pos += sprintf(info+pos, "\t%d", CDROM_CAN(CDC_LOCK) != 0);
3324 pos += sprintf(info+pos, "\nCan change speed:");
3325 for (cdi=topCdromPtr;cdi!=NULL;cdi=cdi->next)
3326 pos += sprintf(info+pos, "\t%d", CDROM_CAN(CDC_SELECT_SPEED) != 0);
3328 pos += sprintf(info+pos, "\nCan select disk:");
3329 for (cdi=topCdromPtr;cdi!=NULL;cdi=cdi->next)
3330 pos += sprintf(info+pos, "\t%d", CDROM_CAN(CDC_SELECT_DISC) != 0);
3332 pos += sprintf(info+pos, "\nCan read multisession:");
3333 for (cdi=topCdromPtr;cdi!=NULL;cdi=cdi->next)
3334 pos += sprintf(info+pos, "\t%d", CDROM_CAN(CDC_MULTI_SESSION) != 0);
3336 pos += sprintf(info+pos, "\nCan read MCN:\t");
3337 for (cdi=topCdromPtr;cdi!=NULL;cdi=cdi->next)
3338 pos += sprintf(info+pos, "\t%d", CDROM_CAN(CDC_MCN) != 0);
3340 pos += sprintf(info+pos, "\nReports media changed:");
3341 for (cdi=topCdromPtr;cdi!=NULL;cdi=cdi->next)
3342 pos += sprintf(info+pos, "\t%d", CDROM_CAN(CDC_MEDIA_CHANGED) != 0);
3344 pos += sprintf(info+pos, "\nCan play audio:\t");
3345 for (cdi=topCdromPtr;cdi!=NULL;cdi=cdi->next)
3346 pos += sprintf(info+pos, "\t%d", CDROM_CAN(CDC_PLAY_AUDIO) != 0);
3348 pos += sprintf(info+pos, "\nCan write CD-R:\t");
3349 for (cdi=topCdromPtr;cdi!=NULL;cdi=cdi->next)
3350 pos += sprintf(info+pos, "\t%d", CDROM_CAN(CDC_CD_R) != 0);
3352 pos += sprintf(info+pos, "\nCan write CD-RW:");
3353 for (cdi=topCdromPtr;cdi!=NULL;cdi=cdi->next)
3354 pos += sprintf(info+pos, "\t%d", CDROM_CAN(CDC_CD_RW) != 0);
3356 pos += sprintf(info+pos, "\nCan read DVD:\t");
3357 for (cdi=topCdromPtr;cdi!=NULL;cdi=cdi->next)
3358 pos += sprintf(info+pos, "\t%d", CDROM_CAN(CDC_DVD) != 0);
3360 pos += sprintf(info+pos, "\nCan write DVD-R:");
3361 for (cdi=topCdromPtr;cdi!=NULL;cdi=cdi->next)
3362 pos += sprintf(info+pos, "\t%d", CDROM_CAN(CDC_DVD_R) != 0);
3364 pos += sprintf(info+pos, "\nCan write DVD-RAM:");
3365 for (cdi=topCdromPtr;cdi!=NULL;cdi=cdi->next)
3366 pos += sprintf(info+pos, "\t%d", CDROM_CAN(CDC_DVD_RAM) != 0);
3368 pos += sprintf(info+pos, "\nCan read MRW:\t");
3369 for (cdi=topCdromPtr;cdi!=NULL;cdi=cdi->next)
3370 pos += sprintf(info+pos, "\t%d", CDROM_CAN(CDC_MRW) != 0);
3372 pos += sprintf(info+pos, "\nCan write MRW:\t");
3373 for (cdi=topCdromPtr;cdi!=NULL;cdi=cdi->next)
3374 pos += sprintf(info+pos, "\t%d", CDROM_CAN(CDC_MRW_W) != 0);
3376 pos += sprintf(info+pos, "\nCan write RAM:\t");
3377 for (cdi=topCdromPtr;cdi!=NULL;cdi=cdi->next)
3378 pos += sprintf(info+pos, "\t%d", CDROM_CAN(CDC_RAM) != 0);
3380 strcpy(info+pos,"\n\n");
3382 return proc_dostring(ctl, write, filp, buffer, lenp, ppos);
3385 /* Unfortunately, per device settings are not implemented through
3386 procfs/sysctl yet. When they are, this will naturally disappear. For now
3387 just update all drives. Later this will become the template on which
3388 new registered drives will be based. */
3389 static void cdrom_update_settings(void)
3391 struct cdrom_device_info *cdi;
3393 for (cdi = topCdromPtr; cdi != NULL; cdi = cdi->next) {
3394 if (autoclose && CDROM_CAN(CDC_CLOSE_TRAY))
3395 cdi->options |= CDO_AUTO_CLOSE;
3396 else if (!autoclose)
3397 cdi->options &= ~CDO_AUTO_CLOSE;
3398 if (autoeject && CDROM_CAN(CDC_OPEN_TRAY))
3399 cdi->options |= CDO_AUTO_EJECT;
3400 else if (!autoeject)
3401 cdi->options &= ~CDO_AUTO_EJECT;
3402 if (lockdoor && CDROM_CAN(CDC_LOCK))
3403 cdi->options |= CDO_LOCK;
3405 cdi->options &= ~CDO_LOCK;
3406 if (check_media_type)
3407 cdi->options |= CDO_CHECK_TYPE;
3409 cdi->options &= ~CDO_CHECK_TYPE;
3413 static int cdrom_sysctl_handler(ctl_table *ctl, int write, struct file * filp,
3414 void __user *buffer, size_t *lenp, loff_t *ppos)
3416 int *valp = ctl->data;
3420 ret = proc_dointvec(ctl, write, filp, buffer, lenp, ppos);
3422 if (write && *valp != val) {
3424 /* we only care for 1 or 0. */
3430 switch (ctl->ctl_name) {
3431 case DEV_CDROM_AUTOCLOSE: {
3432 if (valp == &cdrom_sysctl_settings.autoclose)
3433 autoclose = cdrom_sysctl_settings.autoclose;
3436 case DEV_CDROM_AUTOEJECT: {
3437 if (valp == &cdrom_sysctl_settings.autoeject)
3438 autoeject = cdrom_sysctl_settings.autoeject;
3441 case DEV_CDROM_DEBUG: {
3442 if (valp == &cdrom_sysctl_settings.debug)
3443 debug = cdrom_sysctl_settings.debug;
3446 case DEV_CDROM_LOCK: {
3447 if (valp == &cdrom_sysctl_settings.lock)
3448 lockdoor = cdrom_sysctl_settings.lock;
3451 case DEV_CDROM_CHECK_MEDIA: {
3452 if (valp == &cdrom_sysctl_settings.check)
3453 check_media_type = cdrom_sysctl_settings.check;
3457 /* update the option flags according to the changes. we
3458 don't have per device options through sysctl yet,
3459 but we will have and then this will disappear. */
3460 cdrom_update_settings();
3466 /* Place files in /proc/sys/dev/cdrom */
3467 static ctl_table cdrom_table[] = {
3469 .ctl_name = DEV_CDROM_INFO,
3471 .data = &cdrom_sysctl_settings.info,
3472 .maxlen = CDROM_STR_SIZE,
3474 .proc_handler = &cdrom_sysctl_info,
3477 .ctl_name = DEV_CDROM_AUTOCLOSE,
3478 .procname = "autoclose",
3479 .data = &cdrom_sysctl_settings.autoclose,
3480 .maxlen = sizeof(int),
3482 .proc_handler = &cdrom_sysctl_handler,
3485 .ctl_name = DEV_CDROM_AUTOEJECT,
3486 .procname = "autoeject",
3487 .data = &cdrom_sysctl_settings.autoeject,
3488 .maxlen = sizeof(int),
3490 .proc_handler = &cdrom_sysctl_handler,
3493 .ctl_name = DEV_CDROM_DEBUG,
3494 .procname = "debug",
3495 .data = &cdrom_sysctl_settings.debug,
3496 .maxlen = sizeof(int),
3498 .proc_handler = &cdrom_sysctl_handler,
3501 .ctl_name = DEV_CDROM_LOCK,
3503 .data = &cdrom_sysctl_settings.lock,
3504 .maxlen = sizeof(int),
3506 .proc_handler = &cdrom_sysctl_handler,
3509 .ctl_name = DEV_CDROM_CHECK_MEDIA,
3510 .procname = "check_media",
3511 .data = &cdrom_sysctl_settings.check,
3512 .maxlen = sizeof(int),
3514 .proc_handler = &cdrom_sysctl_handler
3519 static ctl_table cdrom_cdrom_table[] = {
3521 .ctl_name = DEV_CDROM,
3522 .procname = "cdrom",
3525 .child = cdrom_table,
3530 /* Make sure that /proc/sys/dev is there */
3531 static ctl_table cdrom_root_table[] = {
3533 .ctl_name = CTL_DEV,
3537 .child = cdrom_cdrom_table,
3541 static struct ctl_table_header *cdrom_sysctl_header;
3543 static void cdrom_sysctl_register(void)
3545 static int initialized;
3547 if (initialized == 1)
3550 cdrom_sysctl_header = register_sysctl_table(cdrom_root_table, 1);
3551 if (cdrom_root_table->ctl_name && cdrom_root_table->child->de)
3552 cdrom_root_table->child->de->owner = THIS_MODULE;
3554 /* set the defaults */
3555 cdrom_sysctl_settings.autoclose = autoclose;
3556 cdrom_sysctl_settings.autoeject = autoeject;
3557 cdrom_sysctl_settings.debug = debug;
3558 cdrom_sysctl_settings.lock = lockdoor;
3559 cdrom_sysctl_settings.check = check_media_type;
3564 static void cdrom_sysctl_unregister(void)
3566 if (cdrom_sysctl_header)
3567 unregister_sysctl_table(cdrom_sysctl_header);
3570 #endif /* CONFIG_SYSCTL */
3572 static int __init cdrom_init(void)
3574 #ifdef CONFIG_SYSCTL
3575 cdrom_sysctl_register();
3580 static void __exit cdrom_exit(void)
3582 printk(KERN_INFO "Uniform CD-ROM driver unloaded\n");
3583 #ifdef CONFIG_SYSCTL
3584 cdrom_sysctl_unregister();
3588 module_init(cdrom_init);
3589 module_exit(cdrom_exit);
3590 MODULE_LICENSE("GPL");
projects / linux-2.6 / blob