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 = (u_char *) 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 = (u_char *) 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;
2137 blk_queue_bounce(q, &rq->bio);
2139 if (blk_execute_rq(q, cdi->disk, rq, 0)) {
2140 struct request_sense *s = rq->sense;
2142 cdi->last_sense = s->sense_key;
2145 if (blk_rq_unmap_user(bio, len))
2156 blk_put_request(rq);
2160 static int cdrom_read_cdda(struct cdrom_device_info *cdi, __u8 __user *ubuf,
2161 int lba, int nframes)
2165 if (cdi->cdda_method == CDDA_OLD)
2166 return cdrom_read_cdda_old(cdi, ubuf, lba, nframes);
2170 * for anything else than success and io error, we need to retry
2172 ret = cdrom_read_cdda_bpc(cdi, ubuf, lba, nframes);
2173 if (!ret || ret != -EIO)
2177 * I've seen drives get sense 4/8/3 udma crc errors on multi
2178 * frame dma, so drop to single frame dma if we need to
2180 if (cdi->cdda_method == CDDA_BPC_FULL && nframes > 1) {
2181 printk("cdrom: dropping to single frame dma\n");
2182 cdi->cdda_method = CDDA_BPC_SINGLE;
2187 * so we have an io error of some sort with multi frame dma. if the
2188 * condition wasn't a hardware error
2189 * problems, not for any error
2191 if (cdi->last_sense != 0x04 && cdi->last_sense != 0x0b)
2194 printk("cdrom: dropping to old style cdda (sense=%x)\n", cdi->last_sense);
2195 cdi->cdda_method = CDDA_OLD;
2196 return cdrom_read_cdda_old(cdi, ubuf, lba, nframes);
2199 static int cdrom_ioctl_multisession(struct cdrom_device_info *cdi,
2202 struct cdrom_multisession ms_info;
2203 u8 requested_format;
2206 cdinfo(CD_DO_IOCTL, "entering CDROMMULTISESSION\n");
2208 if (!(cdi->ops->capability & CDC_MULTI_SESSION))
2211 if (copy_from_user(&ms_info, argp, sizeof(ms_info)))
2214 requested_format = ms_info.addr_format;
2215 if (requested_format != CDROM_MSF && requested_format != CDROM_LBA)
2217 ms_info.addr_format = CDROM_LBA;
2219 ret = cdi->ops->get_last_session(cdi, &ms_info);
2223 sanitize_format(&ms_info.addr, &ms_info.addr_format, requested_format);
2225 if (copy_to_user(argp, &ms_info, sizeof(ms_info)))
2228 cdinfo(CD_DO_IOCTL, "CDROMMULTISESSION successful\n");
2232 static int cdrom_ioctl_eject(struct cdrom_device_info *cdi)
2234 cdinfo(CD_DO_IOCTL, "entering CDROMEJECT\n");
2236 if (!CDROM_CAN(CDC_OPEN_TRAY))
2238 if (cdi->use_count != 1 || keeplocked)
2240 if (CDROM_CAN(CDC_LOCK)) {
2241 int ret = cdi->ops->lock_door(cdi, 0);
2246 return cdi->ops->tray_move(cdi, 1);
2249 static int cdrom_ioctl_closetray(struct cdrom_device_info *cdi)
2251 cdinfo(CD_DO_IOCTL, "entering CDROMCLOSETRAY\n");
2253 if (!CDROM_CAN(CDC_CLOSE_TRAY))
2255 return cdi->ops->tray_move(cdi, 0);
2258 static int cdrom_ioctl_eject_sw(struct cdrom_device_info *cdi,
2261 cdinfo(CD_DO_IOCTL, "entering CDROMEJECT_SW\n");
2263 if (!CDROM_CAN(CDC_OPEN_TRAY))
2268 cdi->options &= ~(CDO_AUTO_CLOSE | CDO_AUTO_EJECT);
2270 cdi->options |= CDO_AUTO_CLOSE | CDO_AUTO_EJECT;
2274 static int cdrom_ioctl_media_changed(struct cdrom_device_info *cdi,
2277 struct cdrom_changer_info *info;
2280 cdinfo(CD_DO_IOCTL, "entering CDROM_MEDIA_CHANGED\n");
2282 if (!CDROM_CAN(CDC_MEDIA_CHANGED))
2285 /* cannot select disc or select current disc */
2286 if (!CDROM_CAN(CDC_SELECT_DISC) || arg == CDSL_CURRENT)
2287 return media_changed(cdi, 1);
2289 if ((unsigned int)arg >= cdi->capacity)
2292 info = kmalloc(sizeof(*info), GFP_KERNEL);
2296 ret = cdrom_read_mech_status(cdi, info);
2298 ret = info->slots[arg].change;
2303 static int cdrom_ioctl_set_options(struct cdrom_device_info *cdi,
2306 cdinfo(CD_DO_IOCTL, "entering CDROM_SET_OPTIONS\n");
2309 * Options need to be in sync with capability.
2310 * Too late for that, so we have to check each one separately.
2313 case CDO_USE_FFLAGS:
2314 case CDO_CHECK_TYPE:
2317 if (!CDROM_CAN(CDC_LOCK))
2321 return cdi->options;
2322 /* default is basically CDO_[AUTO_CLOSE|AUTO_EJECT] */
2324 if (!CDROM_CAN(arg))
2327 cdi->options |= (int) arg;
2328 return cdi->options;
2331 static int cdrom_ioctl_clear_options(struct cdrom_device_info *cdi,
2334 cdinfo(CD_DO_IOCTL, "entering CDROM_CLEAR_OPTIONS\n");
2336 cdi->options &= ~(int) arg;
2337 return cdi->options;
2340 static int cdrom_ioctl_select_speed(struct cdrom_device_info *cdi,
2343 cdinfo(CD_DO_IOCTL, "entering CDROM_SELECT_SPEED\n");
2345 if (!CDROM_CAN(CDC_SELECT_SPEED))
2347 return cdi->ops->select_speed(cdi, arg);
2350 static int cdrom_ioctl_select_disc(struct cdrom_device_info *cdi,
2353 cdinfo(CD_DO_IOCTL, "entering CDROM_SELECT_DISC\n");
2355 if (!CDROM_CAN(CDC_SELECT_DISC))
2358 if (arg != CDSL_CURRENT && arg != CDSL_NONE) {
2359 if ((int)arg >= cdi->capacity)
2364 * ->select_disc is a hook to allow a driver-specific way of
2365 * seleting disc. However, since there is no equivalent hook for
2366 * cdrom_slot_status this may not actually be useful...
2368 if (cdi->ops->select_disc)
2369 return cdi->ops->select_disc(cdi, arg);
2371 cdinfo(CD_CHANGER, "Using generic cdrom_select_disc()\n");
2372 return cdrom_select_disc(cdi, arg);
2375 static int cdrom_ioctl_reset(struct cdrom_device_info *cdi,
2376 struct block_device *bdev)
2378 cdinfo(CD_DO_IOCTL, "entering CDROM_RESET\n");
2380 if (!capable(CAP_SYS_ADMIN))
2382 if (!CDROM_CAN(CDC_RESET))
2384 invalidate_bdev(bdev, 0);
2385 return cdi->ops->reset(cdi);
2388 static int cdrom_ioctl_lock_door(struct cdrom_device_info *cdi,
2391 cdinfo(CD_DO_IOCTL, "%socking door.\n", arg ? "L" : "Unl");
2393 if (!CDROM_CAN(CDC_LOCK))
2394 return -EDRIVE_CANT_DO_THIS;
2396 keeplocked = arg ? 1 : 0;
2399 * Don't unlock the door on multiple opens by default, but allow
2402 if (cdi->use_count != 1 && !arg && !capable(CAP_SYS_ADMIN))
2404 return cdi->ops->lock_door(cdi, arg);
2407 static int cdrom_ioctl_debug(struct cdrom_device_info *cdi,
2410 cdinfo(CD_DO_IOCTL, "%sabling debug.\n", arg ? "En" : "Dis");
2412 if (!capable(CAP_SYS_ADMIN))
2414 debug = arg ? 1 : 0;
2418 static int cdrom_ioctl_get_capability(struct cdrom_device_info *cdi)
2420 cdinfo(CD_DO_IOCTL, "entering CDROM_GET_CAPABILITY\n");
2421 return (cdi->ops->capability & ~cdi->mask);
2425 * The following function is implemented, although very few audio
2426 * discs give Universal Product Code information, which should just be
2427 * the Medium Catalog Number on the box. Note, that the way the code
2428 * is written on the CD is /not/ uniform across all discs!
2430 static int cdrom_ioctl_get_mcn(struct cdrom_device_info *cdi,
2433 struct cdrom_mcn mcn;
2436 cdinfo(CD_DO_IOCTL, "entering CDROM_GET_MCN\n");
2438 if (!(cdi->ops->capability & CDC_MCN))
2440 ret = cdi->ops->get_mcn(cdi, &mcn);
2444 if (copy_to_user(argp, &mcn, sizeof(mcn)))
2446 cdinfo(CD_DO_IOCTL, "CDROM_GET_MCN successful\n");
2450 static int cdrom_ioctl_drive_status(struct cdrom_device_info *cdi,
2453 cdinfo(CD_DO_IOCTL, "entering CDROM_DRIVE_STATUS\n");
2455 if (!(cdi->ops->capability & CDC_DRIVE_STATUS))
2457 if (!CDROM_CAN(CDC_SELECT_DISC) ||
2458 (arg == CDSL_CURRENT || arg == CDSL_NONE))
2459 return cdi->ops->drive_status(cdi, CDSL_CURRENT);
2460 if (((int)arg >= cdi->capacity))
2462 return cdrom_slot_status(cdi, arg);
2466 * Ok, this is where problems start. The current interface for the
2467 * CDROM_DISC_STATUS ioctl is flawed. It makes the false assumption that
2468 * CDs are all CDS_DATA_1 or all CDS_AUDIO, etc. Unfortunatly, while this
2469 * is often the case, it is also very common for CDs to have some tracks
2470 * with data, and some tracks with audio. Just because I feel like it,
2471 * I declare the following to be the best way to cope. If the CD has ANY
2472 * data tracks on it, it will be returned as a data CD. If it has any XA
2473 * tracks, I will return it as that. Now I could simplify this interface
2474 * by combining these returns with the above, but this more clearly
2475 * demonstrates the problem with the current interface. Too bad this
2476 * wasn't designed to use bitmasks... -Erik
2478 * Well, now we have the option CDS_MIXED: a mixed-type CD.
2479 * User level programmers might feel the ioctl is not very useful.
2482 static int cdrom_ioctl_disc_status(struct cdrom_device_info *cdi)
2486 cdinfo(CD_DO_IOCTL, "entering CDROM_DISC_STATUS\n");
2488 cdrom_count_tracks(cdi, &tracks);
2490 return tracks.error;
2492 /* Policy mode on */
2493 if (tracks.audio > 0) {
2494 if (!tracks.data && !tracks.cdi && !tracks.xa)
2504 if (tracks.data > 0)
2506 /* Policy mode off */
2508 cdinfo(CD_WARNING,"This disc doesn't have any tracks I recognize!\n");
2512 static int cdrom_ioctl_changer_nslots(struct cdrom_device_info *cdi)
2514 cdinfo(CD_DO_IOCTL, "entering CDROM_CHANGER_NSLOTS\n");
2515 return cdi->capacity;
2518 static int cdrom_ioctl_get_subchnl(struct cdrom_device_info *cdi,
2521 struct cdrom_subchnl q;
2525 /* cdinfo(CD_DO_IOCTL,"entering CDROMSUBCHNL\n");*/
2527 if (!CDROM_CAN(CDC_PLAY_AUDIO))
2529 if (copy_from_user(&q, argp, sizeof(q)))
2532 requested = q.cdsc_format;
2533 if (requested != CDROM_MSF && requested != CDROM_LBA)
2535 q.cdsc_format = CDROM_MSF;
2537 ret = cdi->ops->audio_ioctl(cdi, CDROMSUBCHNL, &q);
2541 back = q.cdsc_format; /* local copy */
2542 sanitize_format(&q.cdsc_absaddr, &back, requested);
2543 sanitize_format(&q.cdsc_reladdr, &q.cdsc_format, requested);
2545 if (copy_to_user(argp, &q, sizeof(q)))
2547 /* cdinfo(CD_DO_IOCTL, "CDROMSUBCHNL successful\n"); */
2551 static int cdrom_ioctl_read_tochdr(struct cdrom_device_info *cdi,
2554 struct cdrom_tochdr header;
2557 /* cdinfo(CD_DO_IOCTL, "entering CDROMREADTOCHDR\n"); */
2559 if (!CDROM_CAN(CDC_PLAY_AUDIO))
2561 if (copy_from_user(&header, argp, sizeof(header)))
2564 ret = cdi->ops->audio_ioctl(cdi, CDROMREADTOCHDR, &header);
2568 if (copy_to_user(argp, &header, sizeof(header)))
2570 /* cdinfo(CD_DO_IOCTL, "CDROMREADTOCHDR successful\n"); */
2574 static int cdrom_ioctl_read_tocentry(struct cdrom_device_info *cdi,
2577 struct cdrom_tocentry entry;
2578 u8 requested_format;
2581 /* cdinfo(CD_DO_IOCTL, "entering CDROMREADTOCENTRY\n"); */
2583 if (!CDROM_CAN(CDC_PLAY_AUDIO))
2585 if (copy_from_user(&entry, argp, sizeof(entry)))
2588 requested_format = entry.cdte_format;
2589 if (requested_format != CDROM_MSF && requested_format != CDROM_LBA)
2591 /* make interface to low-level uniform */
2592 entry.cdte_format = CDROM_MSF;
2593 ret = cdi->ops->audio_ioctl(cdi, CDROMREADTOCENTRY, &entry);
2596 sanitize_format(&entry.cdte_addr, &entry.cdte_format, requested_format);
2598 if (copy_to_user(argp, &entry, sizeof(entry)))
2600 /* cdinfo(CD_DO_IOCTL, "CDROMREADTOCENTRY successful\n"); */
2604 static int cdrom_ioctl_play_msf(struct cdrom_device_info *cdi,
2607 struct cdrom_msf msf;
2609 cdinfo(CD_DO_IOCTL, "entering CDROMPLAYMSF\n");
2611 if (!CDROM_CAN(CDC_PLAY_AUDIO))
2613 if (copy_from_user(&msf, argp, sizeof(msf)))
2615 return cdi->ops->audio_ioctl(cdi, CDROMPLAYMSF, &msf);
2618 static int cdrom_ioctl_play_trkind(struct cdrom_device_info *cdi,
2624 cdinfo(CD_DO_IOCTL, "entering CDROMPLAYTRKIND\n");
2626 if (!CDROM_CAN(CDC_PLAY_AUDIO))
2628 if (copy_from_user(&ti, argp, sizeof(ti)))
2631 ret = check_for_audio_disc(cdi, cdi->ops);
2634 return cdi->ops->audio_ioctl(cdi, CDROMPLAYTRKIND, &ti);
2636 static int cdrom_ioctl_volctrl(struct cdrom_device_info *cdi,
2639 struct cdrom_volctrl volume;
2641 cdinfo(CD_DO_IOCTL, "entering CDROMVOLCTRL\n");
2643 if (!CDROM_CAN(CDC_PLAY_AUDIO))
2645 if (copy_from_user(&volume, argp, sizeof(volume)))
2647 return cdi->ops->audio_ioctl(cdi, CDROMVOLCTRL, &volume);
2650 static int cdrom_ioctl_volread(struct cdrom_device_info *cdi,
2653 struct cdrom_volctrl volume;
2656 cdinfo(CD_DO_IOCTL, "entering CDROMVOLREAD\n");
2658 if (!CDROM_CAN(CDC_PLAY_AUDIO))
2661 ret = cdi->ops->audio_ioctl(cdi, CDROMVOLREAD, &volume);
2665 if (copy_to_user(argp, &volume, sizeof(volume)))
2670 static int cdrom_ioctl_audioctl(struct cdrom_device_info *cdi,
2675 cdinfo(CD_DO_IOCTL, "doing audio ioctl (start/stop/pause/resume)\n");
2677 if (!CDROM_CAN(CDC_PLAY_AUDIO))
2679 ret = check_for_audio_disc(cdi, cdi->ops);
2682 return cdi->ops->audio_ioctl(cdi, cmd, NULL);
2686 * Just about every imaginable ioctl is supported in the Uniform layer
2688 * ATAPI / SCSI specific code now mainly resides in mmc_ioctl().
2690 int cdrom_ioctl(struct file * file, struct cdrom_device_info *cdi,
2691 struct inode *ip, unsigned int cmd, unsigned long arg)
2693 void __user *argp = (void __user *)arg;
2697 * Try the generic SCSI command ioctl's first.
2699 ret = scsi_cmd_ioctl(file, ip->i_bdev->bd_disk, cmd, argp);
2704 case CDROMMULTISESSION:
2705 return cdrom_ioctl_multisession(cdi, argp);
2707 return cdrom_ioctl_eject(cdi);
2708 case CDROMCLOSETRAY:
2709 return cdrom_ioctl_closetray(cdi);
2711 return cdrom_ioctl_eject_sw(cdi, arg);
2712 case CDROM_MEDIA_CHANGED:
2713 return cdrom_ioctl_media_changed(cdi, arg);
2714 case CDROM_SET_OPTIONS:
2715 return cdrom_ioctl_set_options(cdi, arg);
2716 case CDROM_CLEAR_OPTIONS:
2717 return cdrom_ioctl_clear_options(cdi, arg);
2718 case CDROM_SELECT_SPEED:
2719 return cdrom_ioctl_select_speed(cdi, arg);
2720 case CDROM_SELECT_DISC:
2721 return cdrom_ioctl_select_disc(cdi, arg);
2723 return cdrom_ioctl_reset(cdi, ip->i_bdev);
2724 case CDROM_LOCKDOOR:
2725 return cdrom_ioctl_lock_door(cdi, arg);
2727 return cdrom_ioctl_debug(cdi, arg);
2728 case CDROM_GET_CAPABILITY:
2729 return cdrom_ioctl_get_capability(cdi);
2731 return cdrom_ioctl_get_mcn(cdi, argp);
2732 case CDROM_DRIVE_STATUS:
2733 return cdrom_ioctl_drive_status(cdi, arg);
2734 case CDROM_DISC_STATUS:
2735 return cdrom_ioctl_disc_status(cdi);
2736 case CDROM_CHANGER_NSLOTS:
2737 return cdrom_ioctl_changer_nslots(cdi);
2741 * Use the ioctls that are implemented through the generic_packet()
2742 * interface. this may look at bit funny, but if -ENOTTY is
2743 * returned that particular ioctl is not implemented and we
2744 * let it go through the device specific ones.
2746 if (CDROM_CAN(CDC_GENERIC_PACKET)) {
2747 ret = mmc_ioctl(cdi, cmd, arg);
2753 * Note: most of the cdinfo() calls are commented out here,
2754 * because they fill up the sys log when CD players poll
2759 return cdrom_ioctl_get_subchnl(cdi, argp);
2760 case CDROMREADTOCHDR:
2761 return cdrom_ioctl_read_tochdr(cdi, argp);
2762 case CDROMREADTOCENTRY:
2763 return cdrom_ioctl_read_tocentry(cdi, argp);
2765 return cdrom_ioctl_play_msf(cdi, argp);
2766 case CDROMPLAYTRKIND:
2767 return cdrom_ioctl_play_trkind(cdi, argp);
2769 return cdrom_ioctl_volctrl(cdi, argp);
2771 return cdrom_ioctl_volread(cdi, argp);
2776 return cdrom_ioctl_audioctl(cdi, cmd);
2783 int msf_to_lba(char m, char s, char f)
2785 return (((m * CD_SECS) + s) * CD_FRAMES + f) - CD_MSF_OFFSET;
2789 * Required when we need to use READ_10 to issue other than 2048 block
2792 static int cdrom_switch_blocksize(struct cdrom_device_info *cdi, int size)
2794 struct cdrom_device_ops *cdo = cdi->ops;
2795 struct packet_command cgc;
2796 struct modesel_head mh;
2798 memset(&mh, 0, sizeof(mh));
2799 mh.block_desc_length = 0x08;
2800 mh.block_length_med = (size >> 8) & 0xff;
2801 mh.block_length_lo = size & 0xff;
2803 memset(&cgc, 0, sizeof(cgc));
2805 cgc.cmd[1] = 1 << 4;
2807 cgc.buflen = sizeof(mh);
2808 cgc.buffer = (char *) &mh;
2809 cgc.data_direction = CGC_DATA_WRITE;
2810 mh.block_desc_length = 0x08;
2811 mh.block_length_med = (size >> 8) & 0xff;
2812 mh.block_length_lo = size & 0xff;
2814 return cdo->generic_packet(cdi, &cgc);
2817 static int mmc_ioctl(struct cdrom_device_info *cdi, unsigned int cmd,
2820 struct cdrom_device_ops *cdo = cdi->ops;
2821 struct packet_command cgc;
2822 struct request_sense sense;
2823 unsigned char buffer[32];
2826 memset(&cgc, 0, sizeof(cgc));
2828 /* build a unified command and queue it through
2829 cdo->generic_packet() */
2832 case CDROMREADMODE1:
2833 case CDROMREADMODE2: {
2834 struct cdrom_msf msf;
2835 int blocksize = 0, format = 0, lba;
2839 blocksize = CD_FRAMESIZE_RAW;
2841 case CDROMREADMODE1:
2842 blocksize = CD_FRAMESIZE;
2845 case CDROMREADMODE2:
2846 blocksize = CD_FRAMESIZE_RAW0;
2849 IOCTL_IN(arg, struct cdrom_msf, msf);
2850 lba = msf_to_lba(msf.cdmsf_min0,msf.cdmsf_sec0,msf.cdmsf_frame0);
2851 /* FIXME: we need upper bound checking, too!! */
2854 cgc.buffer = (char *) kmalloc(blocksize, GFP_KERNEL);
2855 if (cgc.buffer == NULL)
2857 memset(&sense, 0, sizeof(sense));
2859 cgc.data_direction = CGC_DATA_READ;
2860 ret = cdrom_read_block(cdi, &cgc, lba, 1, format, blocksize);
2861 if (ret && sense.sense_key==0x05 && sense.asc==0x20 && sense.ascq==0x00) {
2863 * SCSI-II devices are not required to support
2864 * READ_CD, so let's try switching block size
2866 /* FIXME: switch back again... */
2867 if ((ret = cdrom_switch_blocksize(cdi, blocksize))) {
2872 ret = cdrom_read_cd(cdi, &cgc, lba, blocksize, 1);
2873 ret |= cdrom_switch_blocksize(cdi, blocksize);
2875 if (!ret && copy_to_user((char __user *)arg, cgc.buffer, blocksize))
2880 case CDROMREADAUDIO: {
2881 struct cdrom_read_audio ra;
2884 IOCTL_IN(arg, struct cdrom_read_audio, ra);
2886 if (ra.addr_format == CDROM_MSF)
2887 lba = msf_to_lba(ra.addr.msf.minute,
2890 else if (ra.addr_format == CDROM_LBA)
2895 /* FIXME: we need upper bound checking, too!! */
2896 if (lba < 0 || ra.nframes <= 0 || ra.nframes > CD_FRAMES)
2899 return cdrom_read_cdda(cdi, ra.buf, lba, ra.nframes);
2901 case CDROMSUBCHNL: {
2902 struct cdrom_subchnl q;
2903 u_char requested, back;
2904 IOCTL_IN(arg, struct cdrom_subchnl, q);
2905 requested = q.cdsc_format;
2906 if (!((requested == CDROM_MSF) ||
2907 (requested == CDROM_LBA)))
2909 q.cdsc_format = CDROM_MSF;
2910 if ((ret = cdrom_read_subchannel(cdi, &q, 0)))
2912 back = q.cdsc_format; /* local copy */
2913 sanitize_format(&q.cdsc_absaddr, &back, requested);
2914 sanitize_format(&q.cdsc_reladdr, &q.cdsc_format, requested);
2915 IOCTL_OUT(arg, struct cdrom_subchnl, q);
2916 /* cdinfo(CD_DO_IOCTL, "CDROMSUBCHNL successful\n"); */
2919 case CDROMPLAYMSF: {
2920 struct cdrom_msf msf;
2921 cdinfo(CD_DO_IOCTL, "entering CDROMPLAYMSF\n");
2922 IOCTL_IN(arg, struct cdrom_msf, msf);
2923 cgc.cmd[0] = GPCMD_PLAY_AUDIO_MSF;
2924 cgc.cmd[3] = msf.cdmsf_min0;
2925 cgc.cmd[4] = msf.cdmsf_sec0;
2926 cgc.cmd[5] = msf.cdmsf_frame0;
2927 cgc.cmd[6] = msf.cdmsf_min1;
2928 cgc.cmd[7] = msf.cdmsf_sec1;
2929 cgc.cmd[8] = msf.cdmsf_frame1;
2930 cgc.data_direction = CGC_DATA_NONE;
2931 return cdo->generic_packet(cdi, &cgc);
2933 case CDROMPLAYBLK: {
2934 struct cdrom_blk blk;
2935 cdinfo(CD_DO_IOCTL, "entering CDROMPLAYBLK\n");
2936 IOCTL_IN(arg, struct cdrom_blk, blk);
2937 cgc.cmd[0] = GPCMD_PLAY_AUDIO_10;
2938 cgc.cmd[2] = (blk.from >> 24) & 0xff;
2939 cgc.cmd[3] = (blk.from >> 16) & 0xff;
2940 cgc.cmd[4] = (blk.from >> 8) & 0xff;
2941 cgc.cmd[5] = blk.from & 0xff;
2942 cgc.cmd[7] = (blk.len >> 8) & 0xff;
2943 cgc.cmd[8] = blk.len & 0xff;
2944 cgc.data_direction = CGC_DATA_NONE;
2945 return cdo->generic_packet(cdi, &cgc);
2948 case CDROMVOLREAD: {
2949 struct cdrom_volctrl volctrl;
2950 char mask[sizeof(buffer)];
2951 unsigned short offset;
2953 cdinfo(CD_DO_IOCTL, "entering CDROMVOLUME\n");
2955 IOCTL_IN(arg, struct cdrom_volctrl, volctrl);
2957 cgc.buffer = buffer;
2959 if ((ret = cdrom_mode_sense(cdi, &cgc, GPMODE_AUDIO_CTL_PAGE, 0)))
2962 /* originally the code depended on buffer[1] to determine
2963 how much data is available for transfer. buffer[1] is
2964 unfortunately ambigious and the only reliable way seem
2965 to be to simply skip over the block descriptor... */
2966 offset = 8 + be16_to_cpu(*(__be16 *)(buffer+6));
2968 if (offset + 16 > sizeof(buffer))
2971 if (offset + 16 > cgc.buflen) {
2972 cgc.buflen = offset+16;
2973 ret = cdrom_mode_sense(cdi, &cgc,
2974 GPMODE_AUDIO_CTL_PAGE, 0);
2980 if ((buffer[offset] & 0x3f) != GPMODE_AUDIO_CTL_PAGE ||
2981 buffer[offset+1] < 14)
2984 /* now we have the current volume settings. if it was only
2985 a CDROMVOLREAD, return these values */
2986 if (cmd == CDROMVOLREAD) {
2987 volctrl.channel0 = buffer[offset+9];
2988 volctrl.channel1 = buffer[offset+11];
2989 volctrl.channel2 = buffer[offset+13];
2990 volctrl.channel3 = buffer[offset+15];
2991 IOCTL_OUT(arg, struct cdrom_volctrl, volctrl);
2995 /* get the volume mask */
2997 if ((ret = cdrom_mode_sense(cdi, &cgc,
2998 GPMODE_AUDIO_CTL_PAGE, 1)))
3001 buffer[offset+9] = volctrl.channel0 & mask[offset+9];
3002 buffer[offset+11] = volctrl.channel1 & mask[offset+11];
3003 buffer[offset+13] = volctrl.channel2 & mask[offset+13];
3004 buffer[offset+15] = volctrl.channel3 & mask[offset+15];
3007 cgc.buffer = buffer + offset - 8;
3008 memset(cgc.buffer, 0, 8);
3009 return cdrom_mode_select(cdi, &cgc);
3014 cdinfo(CD_DO_IOCTL, "entering CDROMSTART/CDROMSTOP\n");
3015 cgc.cmd[0] = GPCMD_START_STOP_UNIT;
3017 cgc.cmd[4] = (cmd == CDROMSTART) ? 1 : 0;
3018 cgc.data_direction = CGC_DATA_NONE;
3019 return cdo->generic_packet(cdi, &cgc);
3024 cdinfo(CD_DO_IOCTL, "entering CDROMPAUSE/CDROMRESUME\n");
3025 cgc.cmd[0] = GPCMD_PAUSE_RESUME;
3026 cgc.cmd[8] = (cmd == CDROMRESUME) ? 1 : 0;
3027 cgc.data_direction = CGC_DATA_NONE;
3028 return cdo->generic_packet(cdi, &cgc);
3031 case DVD_READ_STRUCT: {
3033 int size = sizeof(dvd_struct);
3034 if (!CDROM_CAN(CDC_DVD))
3036 if ((s = (dvd_struct *) kmalloc(size, GFP_KERNEL)) == NULL)
3038 cdinfo(CD_DO_IOCTL, "entering DVD_READ_STRUCT\n");
3039 if (copy_from_user(s, (dvd_struct __user *)arg, size)) {
3043 if ((ret = dvd_read_struct(cdi, s))) {
3047 if (copy_to_user((dvd_struct __user *)arg, s, size))
3055 if (!CDROM_CAN(CDC_DVD))
3057 cdinfo(CD_DO_IOCTL, "entering DVD_AUTH\n");
3058 IOCTL_IN(arg, dvd_authinfo, ai);
3059 if ((ret = dvd_do_auth (cdi, &ai)))
3061 IOCTL_OUT(arg, dvd_authinfo, ai);
3065 case CDROM_NEXT_WRITABLE: {
3067 cdinfo(CD_DO_IOCTL, "entering CDROM_NEXT_WRITABLE\n");
3068 if ((ret = cdrom_get_next_writable(cdi, &next)))
3070 IOCTL_OUT(arg, long, next);
3073 case CDROM_LAST_WRITTEN: {
3075 cdinfo(CD_DO_IOCTL, "entering CDROM_LAST_WRITTEN\n");
3076 if ((ret = cdrom_get_last_written(cdi, &last)))
3078 IOCTL_OUT(arg, long, last);
3086 static int cdrom_get_track_info(struct cdrom_device_info *cdi, __u16 track, __u8 type,
3087 track_information *ti)
3089 struct cdrom_device_ops *cdo = cdi->ops;
3090 struct packet_command cgc;
3093 init_cdrom_command(&cgc, ti, 8, CGC_DATA_READ);
3094 cgc.cmd[0] = GPCMD_READ_TRACK_RZONE_INFO;
3095 cgc.cmd[1] = type & 3;
3096 cgc.cmd[4] = (track & 0xff00) >> 8;
3097 cgc.cmd[5] = track & 0xff;
3101 if ((ret = cdo->generic_packet(cdi, &cgc)))
3104 buflen = be16_to_cpu(ti->track_information_length) +
3105 sizeof(ti->track_information_length);
3107 if (buflen > sizeof(track_information))
3108 buflen = sizeof(track_information);
3110 cgc.cmd[8] = cgc.buflen = buflen;
3111 if ((ret = cdo->generic_packet(cdi, &cgc)))
3114 /* return actual fill size */
3118 /* requires CD R/RW */
3119 static int cdrom_get_disc_info(struct cdrom_device_info *cdi, disc_information *di)
3121 struct cdrom_device_ops *cdo = cdi->ops;
3122 struct packet_command cgc;
3125 /* set up command and get the disc info */
3126 init_cdrom_command(&cgc, di, sizeof(*di), CGC_DATA_READ);
3127 cgc.cmd[0] = GPCMD_READ_DISC_INFO;
3128 cgc.cmd[8] = cgc.buflen = 2;
3131 if ((ret = cdo->generic_packet(cdi, &cgc)))
3134 /* not all drives have the same disc_info length, so requeue
3135 * packet with the length the drive tells us it can supply
3137 buflen = be16_to_cpu(di->disc_information_length) +
3138 sizeof(di->disc_information_length);
3140 if (buflen > sizeof(disc_information))
3141 buflen = sizeof(disc_information);
3143 cgc.cmd[8] = cgc.buflen = buflen;
3144 if ((ret = cdo->generic_packet(cdi, &cgc)))
3147 /* return actual fill size */
3151 /* return the last written block on the CD-R media. this is for the udf
3153 int cdrom_get_last_written(struct cdrom_device_info *cdi, long *last_written)
3155 struct cdrom_tocentry toc;
3156 disc_information di;
3157 track_information ti;
3159 int ret = -1, ti_size;
3161 if (!CDROM_CAN(CDC_GENERIC_PACKET))
3164 ret = cdrom_get_disc_info(cdi, &di);
3165 if (ret < (int)(offsetof(typeof(di), last_track_lsb)
3166 + sizeof(di.last_track_lsb)))
3169 /* if unit didn't return msb, it's zeroed by cdrom_get_disc_info */
3170 last_track = (di.last_track_msb << 8) | di.last_track_lsb;
3171 ti_size = cdrom_get_track_info(cdi, last_track, 1, &ti);
3172 if (ti_size < (int)offsetof(typeof(ti), track_start))
3175 /* if this track is blank, try the previous. */
3180 ti_size = cdrom_get_track_info(cdi, last_track, 1, &ti);
3183 if (ti_size < (int)(offsetof(typeof(ti), track_size)
3184 + sizeof(ti.track_size)))
3187 /* if last recorded field is valid, return it. */
3188 if (ti.lra_v && ti_size >= (int)(offsetof(typeof(ti), last_rec_address)
3189 + sizeof(ti.last_rec_address))) {
3190 *last_written = be32_to_cpu(ti.last_rec_address);
3192 /* make it up instead */
3193 *last_written = be32_to_cpu(ti.track_start) +
3194 be32_to_cpu(ti.track_size);
3196 *last_written -= (be32_to_cpu(ti.free_blocks) + 7);
3200 /* this is where we end up if the drive either can't do a
3201 GPCMD_READ_DISC_INFO or GPCMD_READ_TRACK_RZONE_INFO or if
3202 it doesn't give enough information or fails. then we return
3203 the toc contents. */
3205 toc.cdte_format = CDROM_MSF;
3206 toc.cdte_track = CDROM_LEADOUT;
3207 if ((ret = cdi->ops->audio_ioctl(cdi, CDROMREADTOCENTRY, &toc)))
3209 sanitize_format(&toc.cdte_addr, &toc.cdte_format, CDROM_LBA);
3210 *last_written = toc.cdte_addr.lba;
3214 /* return the next writable block. also for udf file system. */
3215 static int cdrom_get_next_writable(struct cdrom_device_info *cdi, long *next_writable)
3217 disc_information di;
3218 track_information ti;
3222 if (!CDROM_CAN(CDC_GENERIC_PACKET))
3223 goto use_last_written;
3225 ret = cdrom_get_disc_info(cdi, &di);
3226 if (ret < 0 || ret < offsetof(typeof(di), last_track_lsb)
3227 + sizeof(di.last_track_lsb))
3228 goto use_last_written;
3230 /* if unit didn't return msb, it's zeroed by cdrom_get_disc_info */
3231 last_track = (di.last_track_msb << 8) | di.last_track_lsb;
3232 ti_size = cdrom_get_track_info(cdi, last_track, 1, &ti);
3233 if (ti_size < 0 || ti_size < offsetof(typeof(ti), track_start))
3234 goto use_last_written;
3236 /* if this track is blank, try the previous. */
3238 if (last_track == 1)
3239 goto use_last_written;
3241 ti_size = cdrom_get_track_info(cdi, last_track, 1, &ti);
3243 goto use_last_written;
3246 /* if next recordable address field is valid, use it. */
3247 if (ti.nwa_v && ti_size >= offsetof(typeof(ti), next_writable)
3248 + sizeof(ti.next_writable)) {
3249 *next_writable = be32_to_cpu(ti.next_writable);
3254 if ((ret = cdrom_get_last_written(cdi, next_writable))) {
3258 *next_writable += 7;
3263 EXPORT_SYMBOL(cdrom_get_last_written);
3264 EXPORT_SYMBOL(register_cdrom);
3265 EXPORT_SYMBOL(unregister_cdrom);
3266 EXPORT_SYMBOL(cdrom_open);
3267 EXPORT_SYMBOL(cdrom_release);
3268 EXPORT_SYMBOL(cdrom_ioctl);
3269 EXPORT_SYMBOL(cdrom_media_changed);
3270 EXPORT_SYMBOL(cdrom_number_of_slots);
3271 EXPORT_SYMBOL(cdrom_mode_select);
3272 EXPORT_SYMBOL(cdrom_mode_sense);
3273 EXPORT_SYMBOL(init_cdrom_command);
3274 EXPORT_SYMBOL(cdrom_get_media_event);
3276 #ifdef CONFIG_SYSCTL
3278 #define CDROM_STR_SIZE 1000
3280 static struct cdrom_sysctl_settings {
3281 char info[CDROM_STR_SIZE]; /* general info */
3282 int autoclose; /* close tray upon mount, etc */
3283 int autoeject; /* eject on umount */
3284 int debug; /* turn on debugging messages */
3285 int lock; /* lock the door on device open */
3286 int check; /* check media type */
3287 } cdrom_sysctl_settings;
3289 static int cdrom_sysctl_info(ctl_table *ctl, int write, struct file * filp,
3290 void __user *buffer, size_t *lenp, loff_t *ppos)
3293 struct cdrom_device_info *cdi;
3294 char *info = cdrom_sysctl_settings.info;
3296 if (!*lenp || (*ppos && !write)) {
3301 pos = sprintf(info, "CD-ROM information, " VERSION "\n");
3303 pos += sprintf(info+pos, "\ndrive name:\t");
3304 for (cdi=topCdromPtr;cdi!=NULL;cdi=cdi->next)
3305 pos += sprintf(info+pos, "\t%s", cdi->name);
3307 pos += sprintf(info+pos, "\ndrive speed:\t");
3308 for (cdi=topCdromPtr;cdi!=NULL;cdi=cdi->next)
3309 pos += sprintf(info+pos, "\t%d", cdi->speed);
3311 pos += sprintf(info+pos, "\ndrive # of slots:");
3312 for (cdi=topCdromPtr;cdi!=NULL;cdi=cdi->next)
3313 pos += sprintf(info+pos, "\t%d", cdi->capacity);
3315 pos += sprintf(info+pos, "\nCan close tray:\t");
3316 for (cdi=topCdromPtr;cdi!=NULL;cdi=cdi->next)
3317 pos += sprintf(info+pos, "\t%d", CDROM_CAN(CDC_CLOSE_TRAY) != 0);
3319 pos += sprintf(info+pos, "\nCan open tray:\t");
3320 for (cdi=topCdromPtr;cdi!=NULL;cdi=cdi->next)
3321 pos += sprintf(info+pos, "\t%d", CDROM_CAN(CDC_OPEN_TRAY) != 0);
3323 pos += sprintf(info+pos, "\nCan lock tray:\t");
3324 for (cdi=topCdromPtr;cdi!=NULL;cdi=cdi->next)
3325 pos += sprintf(info+pos, "\t%d", CDROM_CAN(CDC_LOCK) != 0);
3327 pos += sprintf(info+pos, "\nCan change speed:");
3328 for (cdi=topCdromPtr;cdi!=NULL;cdi=cdi->next)
3329 pos += sprintf(info+pos, "\t%d", CDROM_CAN(CDC_SELECT_SPEED) != 0);
3331 pos += sprintf(info+pos, "\nCan select disk:");
3332 for (cdi=topCdromPtr;cdi!=NULL;cdi=cdi->next)
3333 pos += sprintf(info+pos, "\t%d", CDROM_CAN(CDC_SELECT_DISC) != 0);
3335 pos += sprintf(info+pos, "\nCan read multisession:");
3336 for (cdi=topCdromPtr;cdi!=NULL;cdi=cdi->next)
3337 pos += sprintf(info+pos, "\t%d", CDROM_CAN(CDC_MULTI_SESSION) != 0);
3339 pos += sprintf(info+pos, "\nCan read MCN:\t");
3340 for (cdi=topCdromPtr;cdi!=NULL;cdi=cdi->next)
3341 pos += sprintf(info+pos, "\t%d", CDROM_CAN(CDC_MCN) != 0);
3343 pos += sprintf(info+pos, "\nReports media changed:");
3344 for (cdi=topCdromPtr;cdi!=NULL;cdi=cdi->next)
3345 pos += sprintf(info+pos, "\t%d", CDROM_CAN(CDC_MEDIA_CHANGED) != 0);
3347 pos += sprintf(info+pos, "\nCan play audio:\t");
3348 for (cdi=topCdromPtr;cdi!=NULL;cdi=cdi->next)
3349 pos += sprintf(info+pos, "\t%d", CDROM_CAN(CDC_PLAY_AUDIO) != 0);
3351 pos += sprintf(info+pos, "\nCan write CD-R:\t");
3352 for (cdi=topCdromPtr;cdi!=NULL;cdi=cdi->next)
3353 pos += sprintf(info+pos, "\t%d", CDROM_CAN(CDC_CD_R) != 0);
3355 pos += sprintf(info+pos, "\nCan write CD-RW:");
3356 for (cdi=topCdromPtr;cdi!=NULL;cdi=cdi->next)
3357 pos += sprintf(info+pos, "\t%d", CDROM_CAN(CDC_CD_RW) != 0);
3359 pos += sprintf(info+pos, "\nCan read DVD:\t");
3360 for (cdi=topCdromPtr;cdi!=NULL;cdi=cdi->next)
3361 pos += sprintf(info+pos, "\t%d", CDROM_CAN(CDC_DVD) != 0);
3363 pos += sprintf(info+pos, "\nCan write DVD-R:");
3364 for (cdi=topCdromPtr;cdi!=NULL;cdi=cdi->next)
3365 pos += sprintf(info+pos, "\t%d", CDROM_CAN(CDC_DVD_R) != 0);
3367 pos += sprintf(info+pos, "\nCan write DVD-RAM:");
3368 for (cdi=topCdromPtr;cdi!=NULL;cdi=cdi->next)
3369 pos += sprintf(info+pos, "\t%d", CDROM_CAN(CDC_DVD_RAM) != 0);
3371 pos += sprintf(info+pos, "\nCan read MRW:\t");
3372 for (cdi=topCdromPtr;cdi!=NULL;cdi=cdi->next)
3373 pos += sprintf(info+pos, "\t%d", CDROM_CAN(CDC_MRW) != 0);
3375 pos += sprintf(info+pos, "\nCan write MRW:\t");
3376 for (cdi=topCdromPtr;cdi!=NULL;cdi=cdi->next)
3377 pos += sprintf(info+pos, "\t%d", CDROM_CAN(CDC_MRW_W) != 0);
3379 pos += sprintf(info+pos, "\nCan write RAM:\t");
3380 for (cdi=topCdromPtr;cdi!=NULL;cdi=cdi->next)
3381 pos += sprintf(info+pos, "\t%d", CDROM_CAN(CDC_RAM) != 0);
3383 strcpy(info+pos,"\n\n");
3385 return proc_dostring(ctl, write, filp, buffer, lenp, ppos);
3388 /* Unfortunately, per device settings are not implemented through
3389 procfs/sysctl yet. When they are, this will naturally disappear. For now
3390 just update all drives. Later this will become the template on which
3391 new registered drives will be based. */
3392 static void cdrom_update_settings(void)
3394 struct cdrom_device_info *cdi;
3396 for (cdi = topCdromPtr; cdi != NULL; cdi = cdi->next) {
3397 if (autoclose && CDROM_CAN(CDC_CLOSE_TRAY))
3398 cdi->options |= CDO_AUTO_CLOSE;
3399 else if (!autoclose)
3400 cdi->options &= ~CDO_AUTO_CLOSE;
3401 if (autoeject && CDROM_CAN(CDC_OPEN_TRAY))
3402 cdi->options |= CDO_AUTO_EJECT;
3403 else if (!autoeject)
3404 cdi->options &= ~CDO_AUTO_EJECT;
3405 if (lockdoor && CDROM_CAN(CDC_LOCK))
3406 cdi->options |= CDO_LOCK;
3408 cdi->options &= ~CDO_LOCK;
3409 if (check_media_type)
3410 cdi->options |= CDO_CHECK_TYPE;
3412 cdi->options &= ~CDO_CHECK_TYPE;
3416 static int cdrom_sysctl_handler(ctl_table *ctl, int write, struct file * filp,
3417 void __user *buffer, size_t *lenp, loff_t *ppos)
3419 int *valp = ctl->data;
3423 ret = proc_dointvec(ctl, write, filp, buffer, lenp, ppos);
3425 if (write && *valp != val) {
3427 /* we only care for 1 or 0. */
3433 switch (ctl->ctl_name) {
3434 case DEV_CDROM_AUTOCLOSE: {
3435 if (valp == &cdrom_sysctl_settings.autoclose)
3436 autoclose = cdrom_sysctl_settings.autoclose;
3439 case DEV_CDROM_AUTOEJECT: {
3440 if (valp == &cdrom_sysctl_settings.autoeject)
3441 autoeject = cdrom_sysctl_settings.autoeject;
3444 case DEV_CDROM_DEBUG: {
3445 if (valp == &cdrom_sysctl_settings.debug)
3446 debug = cdrom_sysctl_settings.debug;
3449 case DEV_CDROM_LOCK: {
3450 if (valp == &cdrom_sysctl_settings.lock)
3451 lockdoor = cdrom_sysctl_settings.lock;
3454 case DEV_CDROM_CHECK_MEDIA: {
3455 if (valp == &cdrom_sysctl_settings.check)
3456 check_media_type = cdrom_sysctl_settings.check;
3460 /* update the option flags according to the changes. we
3461 don't have per device options through sysctl yet,
3462 but we will have and then this will disappear. */
3463 cdrom_update_settings();
3469 /* Place files in /proc/sys/dev/cdrom */
3470 static ctl_table cdrom_table[] = {
3472 .ctl_name = DEV_CDROM_INFO,
3474 .data = &cdrom_sysctl_settings.info,
3475 .maxlen = CDROM_STR_SIZE,
3477 .proc_handler = &cdrom_sysctl_info,
3480 .ctl_name = DEV_CDROM_AUTOCLOSE,
3481 .procname = "autoclose",
3482 .data = &cdrom_sysctl_settings.autoclose,
3483 .maxlen = sizeof(int),
3485 .proc_handler = &cdrom_sysctl_handler,
3488 .ctl_name = DEV_CDROM_AUTOEJECT,
3489 .procname = "autoeject",
3490 .data = &cdrom_sysctl_settings.autoeject,
3491 .maxlen = sizeof(int),
3493 .proc_handler = &cdrom_sysctl_handler,
3496 .ctl_name = DEV_CDROM_DEBUG,
3497 .procname = "debug",
3498 .data = &cdrom_sysctl_settings.debug,
3499 .maxlen = sizeof(int),
3501 .proc_handler = &cdrom_sysctl_handler,
3504 .ctl_name = DEV_CDROM_LOCK,
3506 .data = &cdrom_sysctl_settings.lock,
3507 .maxlen = sizeof(int),
3509 .proc_handler = &cdrom_sysctl_handler,
3512 .ctl_name = DEV_CDROM_CHECK_MEDIA,
3513 .procname = "check_media",
3514 .data = &cdrom_sysctl_settings.check,
3515 .maxlen = sizeof(int),
3517 .proc_handler = &cdrom_sysctl_handler
3522 static ctl_table cdrom_cdrom_table[] = {
3524 .ctl_name = DEV_CDROM,
3525 .procname = "cdrom",
3528 .child = cdrom_table,
3533 /* Make sure that /proc/sys/dev is there */
3534 static ctl_table cdrom_root_table[] = {
3536 .ctl_name = CTL_DEV,
3540 .child = cdrom_cdrom_table,
3544 static struct ctl_table_header *cdrom_sysctl_header;
3546 static void cdrom_sysctl_register(void)
3548 static int initialized;
3550 if (initialized == 1)
3553 cdrom_sysctl_header = register_sysctl_table(cdrom_root_table, 1);
3554 if (cdrom_root_table->ctl_name && cdrom_root_table->child->de)
3555 cdrom_root_table->child->de->owner = THIS_MODULE;
3557 /* set the defaults */
3558 cdrom_sysctl_settings.autoclose = autoclose;
3559 cdrom_sysctl_settings.autoeject = autoeject;
3560 cdrom_sysctl_settings.debug = debug;
3561 cdrom_sysctl_settings.lock = lockdoor;
3562 cdrom_sysctl_settings.check = check_media_type;
3567 static void cdrom_sysctl_unregister(void)
3569 if (cdrom_sysctl_header)
3570 unregister_sysctl_table(cdrom_sysctl_header);
3573 #endif /* CONFIG_SYSCTL */
3575 static int __init cdrom_init(void)
3577 #ifdef CONFIG_SYSCTL
3578 cdrom_sysctl_register();
3583 static void __exit cdrom_exit(void)
3585 printk(KERN_INFO "Uniform CD-ROM driver unloaded\n");
3586 #ifdef CONFIG_SYSCTL
3587 cdrom_sysctl_unregister();
3591 module_init(cdrom_init);
3592 module_exit(cdrom_exit);
3593 MODULE_LICENSE("GPL");
projects / linux-drm-fsl-dcu.git / blob