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/config.h>
267 #include <linux/module.h>
268 #include <linux/fs.h>
269 #include <linux/buffer_head.h>
270 #include <linux/major.h>
271 #include <linux/types.h>
272 #include <linux/errno.h>
273 #include <linux/kernel.h>
274 #include <linux/mm.h>
275 #include <linux/slab.h>
276 #include <linux/cdrom.h>
277 #include <linux/sysctl.h>
278 #include <linux/proc_fs.h>
279 #include <linux/blkpg.h>
280 #include <linux/init.h>
281 #include <linux/fcntl.h>
282 #include <linux/blkdev.h>
283 #include <linux/times.h>
285 #include <asm/uaccess.h>
287 /* used to tell the module to turn on full debugging messages */
289 /* used to keep tray locked at all times */
290 static int keeplocked;
291 /* default compatibility mode */
292 static int autoclose=1;
293 static int autoeject;
294 static int lockdoor = 1;
295 /* will we ever get to use this... sigh. */
296 static int check_media_type;
297 /* automatically restart mrw format */
298 static int mrw_format_restart = 1;
299 module_param(debug, bool, 0);
300 module_param(autoclose, bool, 0);
301 module_param(autoeject, bool, 0);
302 module_param(lockdoor, bool, 0);
303 module_param(check_media_type, bool, 0);
304 module_param(mrw_format_restart, bool, 0);
306 static DEFINE_SPINLOCK(cdrom_lock);
308 static const char *mrw_format_status[] = {
315 static const char *mrw_address_space[] = { "DMA", "GAA" };
317 #if (ERRLOGMASK!=CD_NOTHING)
318 #define cdinfo(type, fmt, args...) \
319 if ((ERRLOGMASK & type) || debug==1 ) \
320 printk(KERN_INFO "cdrom: " fmt, ## args)
322 #define cdinfo(type, fmt, args...)
325 /* These are used to simplify getting data in from and back to user land */
326 #define IOCTL_IN(arg, type, in) \
327 if (copy_from_user(&(in), (type __user *) (arg), sizeof (in))) \
330 #define IOCTL_OUT(arg, type, out) \
331 if (copy_to_user((type __user *) (arg), &(out), sizeof (out))) \
334 /* The (cdo->capability & ~cdi->mask & CDC_XXX) construct was used in
335 a lot of places. This macro makes the code more clear. */
336 #define CDROM_CAN(type) (cdi->ops->capability & ~cdi->mask & (type))
338 /* used in the audio ioctls */
339 #define CHECKAUDIO if ((ret=check_for_audio_disc(cdi, cdo))) return ret
341 /* Not-exported routines. */
342 static int open_for_data(struct cdrom_device_info * cdi);
343 static int check_for_audio_disc(struct cdrom_device_info * cdi,
344 struct cdrom_device_ops * cdo);
345 static void sanitize_format(union cdrom_addr *addr,
346 u_char * curr, u_char requested);
347 static int mmc_ioctl(struct cdrom_device_info *cdi, unsigned int cmd,
350 int cdrom_get_last_written(struct cdrom_device_info *, long *);
351 static int cdrom_get_next_writable(struct cdrom_device_info *, long *);
352 static void cdrom_count_tracks(struct cdrom_device_info *, tracktype*);
354 static int cdrom_mrw_exit(struct cdrom_device_info *cdi);
356 static int cdrom_get_disc_info(struct cdrom_device_info *cdi, disc_information *di);
359 static void cdrom_sysctl_register(void);
360 #endif /* CONFIG_SYSCTL */
361 static struct cdrom_device_info *topCdromPtr;
363 static int cdrom_dummy_generic_packet(struct cdrom_device_info *cdi,
364 struct packet_command *cgc)
367 cgc->sense->sense_key = 0x05;
368 cgc->sense->asc = 0x20;
369 cgc->sense->ascq = 0x00;
376 /* This macro makes sure we don't have to check on cdrom_device_ops
377 * existence in the run-time routines below. Change_capability is a
378 * hack to have the capability flags defined const, while we can still
379 * change it here without gcc complaining at every line.
381 #define ENSURE(call, bits) if (cdo->call == NULL) *change_capability &= ~(bits)
383 int register_cdrom(struct cdrom_device_info *cdi)
385 static char banner_printed;
386 struct cdrom_device_ops *cdo = cdi->ops;
387 int *change_capability = (int *)&cdo->capability; /* hack */
389 cdinfo(CD_OPEN, "entering register_cdrom\n");
391 if (cdo->open == NULL || cdo->release == NULL)
393 if (!banner_printed) {
394 printk(KERN_INFO "Uniform CD-ROM driver " REVISION "\n");
397 cdrom_sysctl_register();
398 #endif /* CONFIG_SYSCTL */
401 ENSURE(drive_status, CDC_DRIVE_STATUS );
402 ENSURE(media_changed, CDC_MEDIA_CHANGED);
403 ENSURE(tray_move, CDC_CLOSE_TRAY | CDC_OPEN_TRAY);
404 ENSURE(lock_door, CDC_LOCK);
405 ENSURE(select_speed, CDC_SELECT_SPEED);
406 ENSURE(get_last_session, CDC_MULTI_SESSION);
407 ENSURE(get_mcn, CDC_MCN);
408 ENSURE(reset, CDC_RESET);
409 ENSURE(audio_ioctl, CDC_PLAY_AUDIO);
410 ENSURE(generic_packet, CDC_GENERIC_PACKET);
413 cdi->options = CDO_USE_FFLAGS;
415 if (autoclose==1 && CDROM_CAN(CDC_CLOSE_TRAY))
416 cdi->options |= (int) CDO_AUTO_CLOSE;
417 if (autoeject==1 && CDROM_CAN(CDC_OPEN_TRAY))
418 cdi->options |= (int) CDO_AUTO_EJECT;
420 cdi->options |= (int) CDO_LOCK;
421 if (check_media_type==1)
422 cdi->options |= (int) CDO_CHECK_TYPE;
424 if (CDROM_CAN(CDC_MRW_W))
425 cdi->exit = cdrom_mrw_exit;
428 cdi->cdda_method = CDDA_BPC_FULL;
430 cdi->cdda_method = CDDA_OLD;
432 if (!cdo->generic_packet)
433 cdo->generic_packet = cdrom_dummy_generic_packet;
435 cdinfo(CD_REG_UNREG, "drive \"/dev/%s\" registered\n", cdi->name);
436 spin_lock(&cdrom_lock);
437 cdi->next = topCdromPtr;
439 spin_unlock(&cdrom_lock);
444 int unregister_cdrom(struct cdrom_device_info *unreg)
446 struct cdrom_device_info *cdi, *prev;
447 cdinfo(CD_OPEN, "entering unregister_cdrom\n");
450 spin_lock(&cdrom_lock);
452 while (cdi && cdi != unreg) {
458 spin_unlock(&cdrom_lock);
462 prev->next = cdi->next;
464 topCdromPtr = cdi->next;
466 spin_unlock(&cdrom_lock);
471 cdi->ops->n_minors--;
472 cdinfo(CD_REG_UNREG, "drive \"/dev/%s\" unregistered\n", cdi->name);
476 int cdrom_get_media_event(struct cdrom_device_info *cdi,
477 struct media_event_desc *med)
479 struct packet_command cgc;
480 unsigned char buffer[8];
481 struct event_header *eh = (struct event_header *) buffer;
483 init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_READ);
484 cgc.cmd[0] = GPCMD_GET_EVENT_STATUS_NOTIFICATION;
485 cgc.cmd[1] = 1; /* IMMED */
486 cgc.cmd[4] = 1 << 4; /* media event */
487 cgc.cmd[8] = sizeof(buffer);
490 if (cdi->ops->generic_packet(cdi, &cgc))
493 if (be16_to_cpu(eh->data_len) < sizeof(*med))
496 if (eh->nea || eh->notification_class != 0x4)
499 memcpy(med, &buffer[sizeof(*eh)], sizeof(*med));
504 * the first prototypes used 0x2c as the page code for the mrw mode page,
505 * subsequently this was changed to 0x03. probe the one used by this drive
507 static int cdrom_mrw_probe_pc(struct cdrom_device_info *cdi)
509 struct packet_command cgc;
512 init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_READ);
517 if (!cdrom_mode_sense(cdi, &cgc, MRW_MODE_PC, 0)) {
518 cdi->mrw_mode_page = MRW_MODE_PC;
520 } else if (!cdrom_mode_sense(cdi, &cgc, MRW_MODE_PC_PRE1, 0)) {
521 cdi->mrw_mode_page = MRW_MODE_PC_PRE1;
528 static int cdrom_is_mrw(struct cdrom_device_info *cdi, int *write)
530 struct packet_command cgc;
531 struct mrw_feature_desc *mfd;
532 unsigned char buffer[16];
537 init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_READ);
539 cgc.cmd[0] = GPCMD_GET_CONFIGURATION;
540 cgc.cmd[3] = CDF_MRW;
541 cgc.cmd[8] = sizeof(buffer);
544 if ((ret = cdi->ops->generic_packet(cdi, &cgc)))
547 mfd = (struct mrw_feature_desc *)&buffer[sizeof(struct feature_header)];
548 if (be16_to_cpu(mfd->feature_code) != CDF_MRW)
552 if ((ret = cdrom_mrw_probe_pc(cdi))) {
560 static int cdrom_mrw_bgformat(struct cdrom_device_info *cdi, int cont)
562 struct packet_command cgc;
563 unsigned char buffer[12];
566 printk(KERN_INFO "cdrom: %sstarting format\n", cont ? "Re" : "");
569 * FmtData bit set (bit 4), format type is 1
571 init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_WRITE);
572 cgc.cmd[0] = GPCMD_FORMAT_UNIT;
573 cgc.cmd[1] = (1 << 4) | 1;
575 cgc.timeout = 5 * 60 * HZ;
578 * 4 byte format list header, 8 byte format list descriptor
591 buffer[8] = 0x24 << 2;
594 ret = cdi->ops->generic_packet(cdi, &cgc);
596 printk(KERN_INFO "cdrom: bgformat failed\n");
601 static int cdrom_mrw_bgformat_susp(struct cdrom_device_info *cdi, int immed)
603 struct packet_command cgc;
605 init_cdrom_command(&cgc, NULL, 0, CGC_DATA_NONE);
606 cgc.cmd[0] = GPCMD_CLOSE_TRACK;
609 * Session = 1, Track = 0
611 cgc.cmd[1] = !!immed;
614 cgc.timeout = 5 * 60 * HZ;
616 return cdi->ops->generic_packet(cdi, &cgc);
619 static int cdrom_flush_cache(struct cdrom_device_info *cdi)
621 struct packet_command cgc;
623 init_cdrom_command(&cgc, NULL, 0, CGC_DATA_NONE);
624 cgc.cmd[0] = GPCMD_FLUSH_CACHE;
626 cgc.timeout = 5 * 60 * HZ;
628 return cdi->ops->generic_packet(cdi, &cgc);
631 static int cdrom_mrw_exit(struct cdrom_device_info *cdi)
636 ret = cdrom_get_disc_info(cdi, &di);
637 if (ret < 0 || ret < (int)offsetof(typeof(di),disc_type))
641 if (di.mrw_status == CDM_MRW_BGFORMAT_ACTIVE) {
642 printk(KERN_INFO "cdrom: issuing MRW back ground "
644 ret = cdrom_mrw_bgformat_susp(cdi, 0);
647 if (!ret && cdi->media_written)
648 ret = cdrom_flush_cache(cdi);
653 static int cdrom_mrw_set_lba_space(struct cdrom_device_info *cdi, int space)
655 struct packet_command cgc;
656 struct mode_page_header *mph;
658 int ret, offset, size;
660 init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_READ);
663 cgc.buflen = sizeof(buffer);
665 if ((ret = cdrom_mode_sense(cdi, &cgc, cdi->mrw_mode_page, 0)))
668 mph = (struct mode_page_header *) buffer;
669 offset = be16_to_cpu(mph->desc_length);
670 size = be16_to_cpu(mph->mode_data_length) + 2;
672 buffer[offset + 3] = space;
675 if ((ret = cdrom_mode_select(cdi, &cgc)))
678 printk(KERN_INFO "cdrom: %s: mrw address space %s selected\n", cdi->name, mrw_address_space[space]);
682 static int cdrom_get_random_writable(struct cdrom_device_info *cdi,
683 struct rwrt_feature_desc *rfd)
685 struct packet_command cgc;
689 init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_READ);
691 cgc.cmd[0] = GPCMD_GET_CONFIGURATION; /* often 0x46 */
692 cgc.cmd[3] = CDF_RWRT; /* often 0x0020 */
693 cgc.cmd[8] = sizeof(buffer); /* often 0x18 */
696 if ((ret = cdi->ops->generic_packet(cdi, &cgc)))
699 memcpy(rfd, &buffer[sizeof(struct feature_header)], sizeof (*rfd));
703 static int cdrom_has_defect_mgt(struct cdrom_device_info *cdi)
705 struct packet_command cgc;
710 init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_READ);
712 cgc.cmd[0] = GPCMD_GET_CONFIGURATION;
713 cgc.cmd[3] = CDF_HWDM;
714 cgc.cmd[8] = sizeof(buffer);
717 if ((ret = cdi->ops->generic_packet(cdi, &cgc)))
720 feature_code = (__u16 *) &buffer[sizeof(struct feature_header)];
721 if (be16_to_cpu(*feature_code) == CDF_HWDM)
728 static int cdrom_is_random_writable(struct cdrom_device_info *cdi, int *write)
730 struct rwrt_feature_desc rfd;
735 if ((ret = cdrom_get_random_writable(cdi, &rfd)))
738 if (CDF_RWRT == be16_to_cpu(rfd.feature_code))
744 static int cdrom_media_erasable(struct cdrom_device_info *cdi)
749 ret = cdrom_get_disc_info(cdi, &di);
750 if (ret < 0 || ret < offsetof(typeof(di), n_first_track))
757 * FIXME: check RO bit
759 static int cdrom_dvdram_open_write(struct cdrom_device_info *cdi)
761 int ret = cdrom_media_erasable(cdi);
764 * allow writable open if media info read worked and media is
765 * erasable, _or_ if it fails since not all drives support it
773 static int cdrom_mrw_open_write(struct cdrom_device_info *cdi)
779 * always reset to DMA lba space on open
781 if (cdrom_mrw_set_lba_space(cdi, MRW_LBA_DMA)) {
782 printk(KERN_ERR "cdrom: failed setting lba address space\n");
786 ret = cdrom_get_disc_info(cdi, &di);
787 if (ret < 0 || ret < offsetof(typeof(di),disc_type))
795 * 0 - not MRW formatted
796 * 1 - MRW bgformat started, but not running or complete
797 * 2 - MRW bgformat in progress
798 * 3 - MRW formatting complete
801 printk(KERN_INFO "cdrom open: mrw_status '%s'\n",
802 mrw_format_status[di.mrw_status]);
805 else if (di.mrw_status == CDM_MRW_BGFORMAT_INACTIVE &&
807 ret = cdrom_mrw_bgformat(cdi, 1);
812 static int mo_open_write(struct cdrom_device_info *cdi)
814 struct packet_command cgc;
818 init_cdrom_command(&cgc, &buffer, 4, CGC_DATA_READ);
822 * obtain write protect information as per
823 * drivers/scsi/sd.c:sd_read_write_protect_flag
826 ret = cdrom_mode_sense(cdi, &cgc, GPMODE_ALL_PAGES, 0);
828 ret = cdrom_mode_sense(cdi, &cgc, GPMODE_VENDOR_PAGE, 0);
831 ret = cdrom_mode_sense(cdi, &cgc, GPMODE_ALL_PAGES, 0);
834 /* drive gave us no info, let the user go ahead */
838 return buffer[3] & 0x80;
841 static int cdrom_ram_open_write(struct cdrom_device_info *cdi)
843 struct rwrt_feature_desc rfd;
846 if ((ret = cdrom_has_defect_mgt(cdi)))
849 if ((ret = cdrom_get_random_writable(cdi, &rfd)))
851 else if (CDF_RWRT == be16_to_cpu(rfd.feature_code))
854 cdinfo(CD_OPEN, "can open for random write\n");
858 static void cdrom_mmc3_profile(struct cdrom_device_info *cdi)
860 struct packet_command cgc;
862 int ret, mmc3_profile;
864 init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_READ);
866 cgc.cmd[0] = GPCMD_GET_CONFIGURATION;
868 cgc.cmd[2] = cgc.cmd[3] = 0; /* Starting Feature Number */
869 cgc.cmd[8] = sizeof(buffer); /* Allocation Length */
872 if ((ret = cdi->ops->generic_packet(cdi, &cgc)))
873 mmc3_profile = 0xffff;
875 mmc3_profile = (buffer[6] << 8) | buffer[7];
877 cdi->mmc3_profile = mmc3_profile;
880 static int cdrom_is_dvd_rw(struct cdrom_device_info *cdi)
882 switch (cdi->mmc3_profile) {
883 case 0x12: /* DVD-RAM */
884 case 0x1A: /* DVD+RW */
892 * returns 0 for ok to open write, non-0 to disallow
894 static int cdrom_open_write(struct cdrom_device_info *cdi)
896 int mrw, mrw_write, ram_write;
900 if (!cdrom_is_mrw(cdi, &mrw_write))
903 if (CDROM_CAN(CDC_MO_DRIVE))
906 (void) cdrom_is_random_writable(cdi, &ram_write);
909 cdi->mask &= ~CDC_MRW;
911 cdi->mask |= CDC_MRW;
914 cdi->mask &= ~CDC_MRW_W;
916 cdi->mask |= CDC_MRW_W;
919 cdi->mask &= ~CDC_RAM;
921 cdi->mask |= CDC_RAM;
923 if (CDROM_CAN(CDC_MRW_W))
924 ret = cdrom_mrw_open_write(cdi);
925 else if (CDROM_CAN(CDC_DVD_RAM))
926 ret = cdrom_dvdram_open_write(cdi);
927 else if (CDROM_CAN(CDC_RAM) &&
928 !CDROM_CAN(CDC_CD_R|CDC_CD_RW|CDC_DVD|CDC_DVD_R|CDC_MRW|CDC_MO_DRIVE))
929 ret = cdrom_ram_open_write(cdi);
930 else if (CDROM_CAN(CDC_MO_DRIVE))
931 ret = mo_open_write(cdi);
932 else if (!cdrom_is_dvd_rw(cdi))
938 static void cdrom_dvd_rw_close_write(struct cdrom_device_info *cdi)
940 struct packet_command cgc;
942 if (cdi->mmc3_profile != 0x1a) {
943 cdinfo(CD_CLOSE, "%s: No DVD+RW\n", cdi->name);
947 if (!cdi->media_written) {
948 cdinfo(CD_CLOSE, "%s: DVD+RW media clean\n", cdi->name);
952 printk(KERN_INFO "cdrom: %s: dirty DVD+RW media, \"finalizing\"\n",
955 init_cdrom_command(&cgc, NULL, 0, CGC_DATA_NONE);
956 cgc.cmd[0] = GPCMD_FLUSH_CACHE;
958 cdi->ops->generic_packet(cdi, &cgc);
960 init_cdrom_command(&cgc, NULL, 0, CGC_DATA_NONE);
961 cgc.cmd[0] = GPCMD_CLOSE_TRACK;
962 cgc.timeout = 3000*HZ;
964 cdi->ops->generic_packet(cdi, &cgc);
966 init_cdrom_command(&cgc, NULL, 0, CGC_DATA_NONE);
967 cgc.cmd[0] = GPCMD_CLOSE_TRACK;
968 cgc.cmd[2] = 2; /* Close session */
970 cgc.timeout = 3000*HZ;
971 cdi->ops->generic_packet(cdi, &cgc);
973 cdi->media_written = 0;
976 static int cdrom_close_write(struct cdrom_device_info *cdi)
979 return cdrom_flush_cache(cdi);
985 /* We use the open-option O_NONBLOCK to indicate that the
986 * purpose of opening is only for subsequent ioctl() calls; no device
987 * integrity checks are performed.
989 * We hope that all cd-player programs will adopt this convention. It
990 * is in their own interest: device control becomes a lot easier
993 int cdrom_open(struct cdrom_device_info *cdi, struct inode *ip, struct file *fp)
997 cdinfo(CD_OPEN, "entering cdrom_open\n");
999 /* if this was a O_NONBLOCK open and we should honor the flags,
1000 * do a quick open without drive/disc integrity checks. */
1002 if ((fp->f_flags & O_NONBLOCK) && (cdi->options & CDO_USE_FFLAGS)) {
1003 ret = cdi->ops->open(cdi, 1);
1005 ret = open_for_data(cdi);
1008 cdrom_mmc3_profile(cdi);
1009 if (fp->f_mode & FMODE_WRITE) {
1011 if (cdrom_open_write(cdi))
1013 if (!CDROM_CAN(CDC_RAM))
1016 cdi->media_written = 0;
1023 cdinfo(CD_OPEN, "Use count for \"/dev/%s\" now %d\n",
1024 cdi->name, cdi->use_count);
1025 /* Do this on open. Don't wait for mount, because they might
1026 not be mounting, but opening with O_NONBLOCK */
1027 check_disk_change(ip->i_bdev);
1035 int open_for_data(struct cdrom_device_info * cdi)
1038 struct cdrom_device_ops *cdo = cdi->ops;
1040 cdinfo(CD_OPEN, "entering open_for_data\n");
1041 /* Check if the driver can report drive status. If it can, we
1042 can do clever things. If it can't, well, we at least tried! */
1043 if (cdo->drive_status != NULL) {
1044 ret = cdo->drive_status(cdi, CDSL_CURRENT);
1045 cdinfo(CD_OPEN, "drive_status=%d\n", ret);
1046 if (ret == CDS_TRAY_OPEN) {
1047 cdinfo(CD_OPEN, "the tray is open...\n");
1048 /* can/may i close it? */
1049 if (CDROM_CAN(CDC_CLOSE_TRAY) &&
1050 cdi->options & CDO_AUTO_CLOSE) {
1051 cdinfo(CD_OPEN, "trying to close the tray.\n");
1052 ret=cdo->tray_move(cdi,0);
1054 cdinfo(CD_OPEN, "bummer. tried to close the tray but failed.\n");
1055 /* Ignore the error from the low
1056 level driver. We don't care why it
1057 couldn't close the tray. We only care
1058 that there is no disc in the drive,
1059 since that is the _REAL_ problem here.*/
1061 goto clean_up_and_return;
1064 cdinfo(CD_OPEN, "bummer. this drive can't close the tray.\n");
1066 goto clean_up_and_return;
1068 /* Ok, the door should be closed now.. Check again */
1069 ret = cdo->drive_status(cdi, CDSL_CURRENT);
1070 if ((ret == CDS_NO_DISC) || (ret==CDS_TRAY_OPEN)) {
1071 cdinfo(CD_OPEN, "bummer. the tray is still not closed.\n");
1072 cdinfo(CD_OPEN, "tray might not contain a medium.\n");
1074 goto clean_up_and_return;
1076 cdinfo(CD_OPEN, "the tray is now closed.\n");
1078 /* the door should be closed now, check for the disc */
1079 ret = cdo->drive_status(cdi, CDSL_CURRENT);
1080 if (ret!=CDS_DISC_OK) {
1082 goto clean_up_and_return;
1085 cdrom_count_tracks(cdi, &tracks);
1086 if (tracks.error == CDS_NO_DISC) {
1087 cdinfo(CD_OPEN, "bummer. no disc.\n");
1089 goto clean_up_and_return;
1091 /* CD-Players which don't use O_NONBLOCK, workman
1092 * for example, need bit CDO_CHECK_TYPE cleared! */
1093 if (tracks.data==0) {
1094 if (cdi->options & CDO_CHECK_TYPE) {
1095 /* give people a warning shot, now that CDO_CHECK_TYPE
1096 is the default case! */
1097 cdinfo(CD_OPEN, "bummer. wrong media type.\n");
1098 cdinfo(CD_WARNING, "pid %d must open device O_NONBLOCK!\n",
1099 (unsigned int)current->pid);
1101 goto clean_up_and_return;
1104 cdinfo(CD_OPEN, "wrong media type, but CDO_CHECK_TYPE not set.\n");
1108 cdinfo(CD_OPEN, "all seems well, opening the device.\n");
1110 /* all seems well, we can open the device */
1111 ret = cdo->open(cdi, 0); /* open for data */
1112 cdinfo(CD_OPEN, "opening the device gave me %d.\n", ret);
1113 /* After all this careful checking, we shouldn't have problems
1114 opening the device, but we don't want the device locked if
1115 this somehow fails... */
1117 cdinfo(CD_OPEN, "open device failed.\n");
1118 goto clean_up_and_return;
1120 if (CDROM_CAN(CDC_LOCK) && (cdi->options & CDO_LOCK)) {
1121 cdo->lock_door(cdi, 1);
1122 cdinfo(CD_OPEN, "door locked.\n");
1124 cdinfo(CD_OPEN, "device opened successfully.\n");
1127 /* Something failed. Try to unlock the drive, because some drivers
1128 (notably ide-cd) lock the drive after every command. This produced
1129 a nasty bug where after mount failed, the drive would remain locked!
1130 This ensures that the drive gets unlocked after a mount fails. This
1131 is a goto to avoid bloating the driver with redundant code. */
1132 clean_up_and_return:
1133 cdinfo(CD_OPEN, "open failed.\n");
1134 if (CDROM_CAN(CDC_LOCK) && cdi->options & CDO_LOCK) {
1135 cdo->lock_door(cdi, 0);
1136 cdinfo(CD_OPEN, "door unlocked.\n");
1141 /* This code is similar to that in open_for_data. The routine is called
1142 whenever an audio play operation is requested.
1144 int check_for_audio_disc(struct cdrom_device_info * cdi,
1145 struct cdrom_device_ops * cdo)
1149 cdinfo(CD_OPEN, "entering check_for_audio_disc\n");
1150 if (!(cdi->options & CDO_CHECK_TYPE))
1152 if (cdo->drive_status != NULL) {
1153 ret = cdo->drive_status(cdi, CDSL_CURRENT);
1154 cdinfo(CD_OPEN, "drive_status=%d\n", ret);
1155 if (ret == CDS_TRAY_OPEN) {
1156 cdinfo(CD_OPEN, "the tray is open...\n");
1157 /* can/may i close it? */
1158 if (CDROM_CAN(CDC_CLOSE_TRAY) &&
1159 cdi->options & CDO_AUTO_CLOSE) {
1160 cdinfo(CD_OPEN, "trying to close the tray.\n");
1161 ret=cdo->tray_move(cdi,0);
1163 cdinfo(CD_OPEN, "bummer. tried to close tray but failed.\n");
1164 /* Ignore the error from the low
1165 level driver. We don't care why it
1166 couldn't close the tray. We only care
1167 that there is no disc in the drive,
1168 since that is the _REAL_ problem here.*/
1172 cdinfo(CD_OPEN, "bummer. this driver can't close the tray.\n");
1175 /* Ok, the door should be closed now.. Check again */
1176 ret = cdo->drive_status(cdi, CDSL_CURRENT);
1177 if ((ret == CDS_NO_DISC) || (ret==CDS_TRAY_OPEN)) {
1178 cdinfo(CD_OPEN, "bummer. the tray is still not closed.\n");
1181 if (ret!=CDS_DISC_OK) {
1182 cdinfo(CD_OPEN, "bummer. disc isn't ready.\n");
1185 cdinfo(CD_OPEN, "the tray is now closed.\n");
1188 cdrom_count_tracks(cdi, &tracks);
1190 return(tracks.error);
1192 if (tracks.audio==0)
1193 return -EMEDIUMTYPE;
1198 /* Admittedly, the logic below could be performed in a nicer way. */
1199 int cdrom_release(struct cdrom_device_info *cdi, struct file *fp)
1201 struct cdrom_device_ops *cdo = cdi->ops;
1202 int opened_for_data;
1204 cdinfo(CD_CLOSE, "entering cdrom_release\n");
1206 if (cdi->use_count > 0)
1208 if (cdi->use_count == 0)
1209 cdinfo(CD_CLOSE, "Use count for \"/dev/%s\" now zero\n", cdi->name);
1210 if (cdi->use_count == 0)
1211 cdrom_dvd_rw_close_write(cdi);
1212 if (cdi->use_count == 0 &&
1213 (cdo->capability & CDC_LOCK) && !keeplocked) {
1214 cdinfo(CD_CLOSE, "Unlocking door!\n");
1215 cdo->lock_door(cdi, 0);
1217 opened_for_data = !(cdi->options & CDO_USE_FFLAGS) ||
1218 !(fp && fp->f_flags & O_NONBLOCK);
1221 * flush cache on last write release
1223 if (CDROM_CAN(CDC_RAM) && !cdi->use_count && cdi->for_data)
1224 cdrom_close_write(cdi);
1227 if (cdi->use_count == 0) { /* last process that closes dev*/
1228 if (opened_for_data &&
1229 cdi->options & CDO_AUTO_EJECT && CDROM_CAN(CDC_OPEN_TRAY))
1230 cdo->tray_move(cdi, 1);
1235 static int cdrom_read_mech_status(struct cdrom_device_info *cdi,
1236 struct cdrom_changer_info *buf)
1238 struct packet_command cgc;
1239 struct cdrom_device_ops *cdo = cdi->ops;
1243 * Sanyo changer isn't spec compliant (doesn't use regular change
1244 * LOAD_UNLOAD command, and it doesn't implement the mech status
1247 if (cdi->sanyo_slot) {
1248 buf->hdr.nslots = 3;
1249 buf->hdr.curslot = cdi->sanyo_slot == 3 ? 0 : cdi->sanyo_slot;
1250 for (length = 0; length < 3; length++) {
1251 buf->slots[length].disc_present = 1;
1252 buf->slots[length].change = 0;
1257 length = sizeof(struct cdrom_mechstat_header) +
1258 cdi->capacity * sizeof(struct cdrom_slot);
1260 init_cdrom_command(&cgc, buf, length, CGC_DATA_READ);
1261 cgc.cmd[0] = GPCMD_MECHANISM_STATUS;
1262 cgc.cmd[8] = (length >> 8) & 0xff;
1263 cgc.cmd[9] = length & 0xff;
1264 return cdo->generic_packet(cdi, &cgc);
1267 static int cdrom_slot_status(struct cdrom_device_info *cdi, int slot)
1269 struct cdrom_changer_info *info;
1272 cdinfo(CD_CHANGER, "entering cdrom_slot_status()\n");
1273 if (cdi->sanyo_slot)
1276 info = kmalloc(sizeof(*info), GFP_KERNEL);
1280 if ((ret = cdrom_read_mech_status(cdi, info)))
1283 if (info->slots[slot].disc_present)
1293 /* Return the number of slots for an ATAPI/SCSI cdrom,
1294 * return 1 if not a changer.
1296 int cdrom_number_of_slots(struct cdrom_device_info *cdi)
1300 struct cdrom_changer_info *info;
1302 cdinfo(CD_CHANGER, "entering cdrom_number_of_slots()\n");
1303 /* cdrom_read_mech_status requires a valid value for capacity: */
1306 info = kmalloc(sizeof(*info), GFP_KERNEL);
1310 if ((status = cdrom_read_mech_status(cdi, info)) == 0)
1311 nslots = info->hdr.nslots;
1318 /* If SLOT < 0, unload the current slot. Otherwise, try to load SLOT. */
1319 static int cdrom_load_unload(struct cdrom_device_info *cdi, int slot)
1321 struct packet_command cgc;
1323 cdinfo(CD_CHANGER, "entering cdrom_load_unload()\n");
1324 if (cdi->sanyo_slot && slot < 0)
1327 init_cdrom_command(&cgc, NULL, 0, CGC_DATA_NONE);
1328 cgc.cmd[0] = GPCMD_LOAD_UNLOAD;
1329 cgc.cmd[4] = 2 + (slot >= 0);
1331 cgc.timeout = 60 * HZ;
1333 /* The Sanyo 3 CD changer uses byte 7 of the
1334 GPCMD_TEST_UNIT_READY to command to switch CDs instead of
1335 using the GPCMD_LOAD_UNLOAD opcode. */
1336 if (cdi->sanyo_slot && -1 < slot) {
1337 cgc.cmd[0] = GPCMD_TEST_UNIT_READY;
1339 cgc.cmd[4] = cgc.cmd[8] = 0;
1340 cdi->sanyo_slot = slot ? slot : 3;
1343 return cdi->ops->generic_packet(cdi, &cgc);
1346 static int cdrom_select_disc(struct cdrom_device_info *cdi, int slot)
1348 struct cdrom_changer_info *info;
1352 cdinfo(CD_CHANGER, "entering cdrom_select_disc()\n");
1353 if (!CDROM_CAN(CDC_SELECT_DISC))
1354 return -EDRIVE_CANT_DO_THIS;
1356 (void) cdi->ops->media_changed(cdi, slot);
1358 if (slot == CDSL_NONE) {
1359 /* set media changed bits, on both queues */
1360 cdi->mc_flags = 0x3;
1361 return cdrom_load_unload(cdi, -1);
1364 info = kmalloc(sizeof(*info), GFP_KERNEL);
1368 if ((ret = cdrom_read_mech_status(cdi, info))) {
1373 curslot = info->hdr.curslot;
1376 if (cdi->use_count > 1 || keeplocked) {
1377 if (slot == CDSL_CURRENT) {
1384 /* Specifying CDSL_CURRENT will attempt to load the currnet slot,
1385 which is useful if it had been previously unloaded.
1386 Whether it can or not, it returns the current slot.
1387 Similarly, if slot happens to be the current one, we still
1389 if (slot == CDSL_CURRENT)
1392 /* set media changed bits on both queues */
1393 cdi->mc_flags = 0x3;
1394 if ((ret = cdrom_load_unload(cdi, slot)))
1400 /* We want to make media_changed accessible to the user through an
1401 * ioctl. The main problem now is that we must double-buffer the
1402 * low-level implementation, to assure that the VFS and the user both
1403 * see a medium change once.
1407 int media_changed(struct cdrom_device_info *cdi, int queue)
1409 unsigned int mask = (1 << (queue & 1));
1410 int ret = !!(cdi->mc_flags & mask);
1412 if (!CDROM_CAN(CDC_MEDIA_CHANGED))
1414 /* changed since last call? */
1415 if (cdi->ops->media_changed(cdi, CDSL_CURRENT)) {
1416 cdi->mc_flags = 0x3; /* set bit on both queues */
1418 cdi->media_written = 0;
1420 cdi->mc_flags &= ~mask; /* clear bit */
1424 int cdrom_media_changed(struct cdrom_device_info *cdi)
1426 /* This talks to the VFS, which doesn't like errors - just 1 or 0.
1427 * Returning "0" is always safe (media hasn't been changed). Do that
1428 * if the low-level cdrom driver dosn't support media changed. */
1429 if (cdi == NULL || cdi->ops->media_changed == NULL)
1431 if (!CDROM_CAN(CDC_MEDIA_CHANGED))
1433 return media_changed(cdi, 0);
1436 /* badly broken, I know. Is due for a fixup anytime. */
1437 static void cdrom_count_tracks(struct cdrom_device_info *cdi, tracktype* tracks)
1439 struct cdrom_tochdr header;
1440 struct cdrom_tocentry entry;
1447 cdinfo(CD_COUNT_TRACKS, "entering cdrom_count_tracks\n");
1448 if (!CDROM_CAN(CDC_PLAY_AUDIO)) {
1449 tracks->error=CDS_NO_INFO;
1452 /* Grab the TOC header so we can see how many tracks there are */
1453 if ((ret = cdi->ops->audio_ioctl(cdi, CDROMREADTOCHDR, &header))) {
1454 if (ret == -ENOMEDIUM)
1455 tracks->error = CDS_NO_DISC;
1457 tracks->error = CDS_NO_INFO;
1460 /* check what type of tracks are on this disc */
1461 entry.cdte_format = CDROM_MSF;
1462 for (i = header.cdth_trk0; i <= header.cdth_trk1; i++) {
1463 entry.cdte_track = i;
1464 if (cdi->ops->audio_ioctl(cdi, CDROMREADTOCENTRY, &entry)) {
1465 tracks->error=CDS_NO_INFO;
1468 if (entry.cdte_ctrl & CDROM_DATA_TRACK) {
1469 if (entry.cdte_format == 0x10)
1471 else if (entry.cdte_format == 0x20)
1477 cdinfo(CD_COUNT_TRACKS, "track %d: format=%d, ctrl=%d\n",
1478 i, entry.cdte_format, entry.cdte_ctrl);
1480 cdinfo(CD_COUNT_TRACKS, "disc has %d tracks: %d=audio %d=data %d=Cd-I %d=XA\n",
1481 header.cdth_trk1, tracks->audio, tracks->data,
1482 tracks->cdi, tracks->xa);
1485 /* Requests to the low-level drivers will /always/ be done in the
1486 following format convention:
1488 CDROM_LBA: all data-related requests.
1489 CDROM_MSF: all audio-related requests.
1491 However, a low-level implementation is allowed to refuse this
1492 request, and return information in its own favorite format.
1494 It doesn't make sense /at all/ to ask for a play_audio in LBA
1495 format, or ask for multi-session info in MSF format. However, for
1496 backward compatibility these format requests will be satisfied, but
1497 the requests to the low-level drivers will be sanitized in the more
1498 meaningful format indicated above.
1502 void sanitize_format(union cdrom_addr *addr,
1503 u_char * curr, u_char requested)
1505 if (*curr == requested)
1506 return; /* nothing to be done! */
1507 if (requested == CDROM_LBA) {
1508 addr->lba = (int) addr->msf.frame +
1509 75 * (addr->msf.second - 2 + 60 * addr->msf.minute);
1510 } else { /* CDROM_MSF */
1511 int lba = addr->lba;
1512 addr->msf.frame = lba % 75;
1515 addr->msf.second = lba % 60;
1516 addr->msf.minute = lba / 60;
1521 void init_cdrom_command(struct packet_command *cgc, void *buf, int len,
1524 memset(cgc, 0, sizeof(struct packet_command));
1526 memset(buf, 0, len);
1527 cgc->buffer = (char *) buf;
1529 cgc->data_direction = type;
1530 cgc->timeout = 5*HZ;
1535 #define copy_key(dest,src) memcpy((dest), (src), sizeof(dvd_key))
1536 #define copy_chal(dest,src) memcpy((dest), (src), sizeof(dvd_challenge))
1538 static void setup_report_key(struct packet_command *cgc, unsigned agid, unsigned type)
1540 cgc->cmd[0] = GPCMD_REPORT_KEY;
1541 cgc->cmd[10] = type | (agid << 6);
1543 case 0: case 8: case 5: {
1556 cgc->cmd[9] = cgc->buflen;
1557 cgc->data_direction = CGC_DATA_READ;
1560 static void setup_send_key(struct packet_command *cgc, unsigned agid, unsigned type)
1562 cgc->cmd[0] = GPCMD_SEND_KEY;
1563 cgc->cmd[10] = type | (agid << 6);
1578 cgc->cmd[9] = cgc->buflen;
1579 cgc->data_direction = CGC_DATA_WRITE;
1582 static int dvd_do_auth(struct cdrom_device_info *cdi, dvd_authinfo *ai)
1586 struct packet_command cgc;
1587 struct cdrom_device_ops *cdo = cdi->ops;
1588 rpc_state_t rpc_state;
1590 memset(buf, 0, sizeof(buf));
1591 init_cdrom_command(&cgc, buf, 0, CGC_DATA_READ);
1595 case DVD_LU_SEND_AGID:
1596 cdinfo(CD_DVD, "entering DVD_LU_SEND_AGID\n");
1598 setup_report_key(&cgc, ai->lsa.agid, 0);
1600 if ((ret = cdo->generic_packet(cdi, &cgc)))
1603 ai->lsa.agid = buf[7] >> 6;
1604 /* Returning data, let host change state */
1607 case DVD_LU_SEND_KEY1:
1608 cdinfo(CD_DVD, "entering DVD_LU_SEND_KEY1\n");
1609 setup_report_key(&cgc, ai->lsk.agid, 2);
1611 if ((ret = cdo->generic_packet(cdi, &cgc)))
1614 copy_key(ai->lsk.key, &buf[4]);
1615 /* Returning data, let host change state */
1618 case DVD_LU_SEND_CHALLENGE:
1619 cdinfo(CD_DVD, "entering DVD_LU_SEND_CHALLENGE\n");
1620 setup_report_key(&cgc, ai->lsc.agid, 1);
1622 if ((ret = cdo->generic_packet(cdi, &cgc)))
1625 copy_chal(ai->lsc.chal, &buf[4]);
1626 /* Returning data, let host change state */
1630 case DVD_LU_SEND_TITLE_KEY:
1631 cdinfo(CD_DVD, "entering DVD_LU_SEND_TITLE_KEY\n");
1633 setup_report_key(&cgc, ai->lstk.agid, 4);
1634 cgc.cmd[5] = ai->lstk.lba;
1635 cgc.cmd[4] = ai->lstk.lba >> 8;
1636 cgc.cmd[3] = ai->lstk.lba >> 16;
1637 cgc.cmd[2] = ai->lstk.lba >> 24;
1639 if ((ret = cdo->generic_packet(cdi, &cgc)))
1642 ai->lstk.cpm = (buf[4] >> 7) & 1;
1643 ai->lstk.cp_sec = (buf[4] >> 6) & 1;
1644 ai->lstk.cgms = (buf[4] >> 4) & 3;
1645 copy_key(ai->lstk.title_key, &buf[5]);
1646 /* Returning data, let host change state */
1649 case DVD_LU_SEND_ASF:
1650 cdinfo(CD_DVD, "entering DVD_LU_SEND_ASF\n");
1651 setup_report_key(&cgc, ai->lsasf.agid, 5);
1653 if ((ret = cdo->generic_packet(cdi, &cgc)))
1656 ai->lsasf.asf = buf[7] & 1;
1659 /* LU data receive (LU changes state) */
1660 case DVD_HOST_SEND_CHALLENGE:
1661 cdinfo(CD_DVD, "entering DVD_HOST_SEND_CHALLENGE\n");
1662 setup_send_key(&cgc, ai->hsc.agid, 1);
1664 copy_chal(&buf[4], ai->hsc.chal);
1666 if ((ret = cdo->generic_packet(cdi, &cgc)))
1669 ai->type = DVD_LU_SEND_KEY1;
1672 case DVD_HOST_SEND_KEY2:
1673 cdinfo(CD_DVD, "entering DVD_HOST_SEND_KEY2\n");
1674 setup_send_key(&cgc, ai->hsk.agid, 3);
1676 copy_key(&buf[4], ai->hsk.key);
1678 if ((ret = cdo->generic_packet(cdi, &cgc))) {
1679 ai->type = DVD_AUTH_FAILURE;
1682 ai->type = DVD_AUTH_ESTABLISHED;
1686 case DVD_INVALIDATE_AGID:
1688 cdinfo(CD_DVD, "entering DVD_INVALIDATE_AGID\n");
1689 setup_report_key(&cgc, ai->lsa.agid, 0x3f);
1690 if ((ret = cdo->generic_packet(cdi, &cgc)))
1694 /* Get region settings */
1695 case DVD_LU_SEND_RPC_STATE:
1696 cdinfo(CD_DVD, "entering DVD_LU_SEND_RPC_STATE\n");
1697 setup_report_key(&cgc, 0, 8);
1698 memset(&rpc_state, 0, sizeof(rpc_state_t));
1699 cgc.buffer = (char *) &rpc_state;
1701 if ((ret = cdo->generic_packet(cdi, &cgc)))
1704 ai->lrpcs.type = rpc_state.type_code;
1705 ai->lrpcs.vra = rpc_state.vra;
1706 ai->lrpcs.ucca = rpc_state.ucca;
1707 ai->lrpcs.region_mask = rpc_state.region_mask;
1708 ai->lrpcs.rpc_scheme = rpc_state.rpc_scheme;
1711 /* Set region settings */
1712 case DVD_HOST_SEND_RPC_STATE:
1713 cdinfo(CD_DVD, "entering DVD_HOST_SEND_RPC_STATE\n");
1714 setup_send_key(&cgc, 0, 6);
1716 buf[4] = ai->hrpcs.pdrc;
1718 if ((ret = cdo->generic_packet(cdi, &cgc)))
1723 cdinfo(CD_WARNING, "Invalid DVD key ioctl (%d)\n", ai->type);
1730 static int dvd_read_physical(struct cdrom_device_info *cdi, dvd_struct *s)
1732 unsigned char buf[21], *base;
1733 struct dvd_layer *layer;
1734 struct packet_command cgc;
1735 struct cdrom_device_ops *cdo = cdi->ops;
1736 int ret, layer_num = s->physical.layer_num;
1738 if (layer_num >= DVD_LAYERS)
1741 init_cdrom_command(&cgc, buf, sizeof(buf), CGC_DATA_READ);
1742 cgc.cmd[0] = GPCMD_READ_DVD_STRUCTURE;
1743 cgc.cmd[6] = layer_num;
1744 cgc.cmd[7] = s->type;
1745 cgc.cmd[9] = cgc.buflen & 0xff;
1748 * refrain from reporting errors on non-existing layers (mainly)
1752 if ((ret = cdo->generic_packet(cdi, &cgc)))
1756 layer = &s->physical.layer[layer_num];
1759 * place the data... really ugly, but at least we won't have to
1760 * worry about endianess in userspace.
1762 memset(layer, 0, sizeof(*layer));
1763 layer->book_version = base[0] & 0xf;
1764 layer->book_type = base[0] >> 4;
1765 layer->min_rate = base[1] & 0xf;
1766 layer->disc_size = base[1] >> 4;
1767 layer->layer_type = base[2] & 0xf;
1768 layer->track_path = (base[2] >> 4) & 1;
1769 layer->nlayers = (base[2] >> 5) & 3;
1770 layer->track_density = base[3] & 0xf;
1771 layer->linear_density = base[3] >> 4;
1772 layer->start_sector = base[5] << 16 | base[6] << 8 | base[7];
1773 layer->end_sector = base[9] << 16 | base[10] << 8 | base[11];
1774 layer->end_sector_l0 = base[13] << 16 | base[14] << 8 | base[15];
1775 layer->bca = base[16] >> 7;
1780 static int dvd_read_copyright(struct cdrom_device_info *cdi, dvd_struct *s)
1784 struct packet_command cgc;
1785 struct cdrom_device_ops *cdo = cdi->ops;
1787 init_cdrom_command(&cgc, buf, sizeof(buf), CGC_DATA_READ);
1788 cgc.cmd[0] = GPCMD_READ_DVD_STRUCTURE;
1789 cgc.cmd[6] = s->copyright.layer_num;
1790 cgc.cmd[7] = s->type;
1791 cgc.cmd[8] = cgc.buflen >> 8;
1792 cgc.cmd[9] = cgc.buflen & 0xff;
1794 if ((ret = cdo->generic_packet(cdi, &cgc)))
1797 s->copyright.cpst = buf[4];
1798 s->copyright.rmi = buf[5];
1803 static int dvd_read_disckey(struct cdrom_device_info *cdi, dvd_struct *s)
1807 struct packet_command cgc;
1808 struct cdrom_device_ops *cdo = cdi->ops;
1810 size = sizeof(s->disckey.value) + 4;
1812 if ((buf = (u_char *) kmalloc(size, GFP_KERNEL)) == NULL)
1815 init_cdrom_command(&cgc, buf, size, CGC_DATA_READ);
1816 cgc.cmd[0] = GPCMD_READ_DVD_STRUCTURE;
1817 cgc.cmd[7] = s->type;
1818 cgc.cmd[8] = size >> 8;
1819 cgc.cmd[9] = size & 0xff;
1820 cgc.cmd[10] = s->disckey.agid << 6;
1822 if (!(ret = cdo->generic_packet(cdi, &cgc)))
1823 memcpy(s->disckey.value, &buf[4], sizeof(s->disckey.value));
1829 static int dvd_read_bca(struct cdrom_device_info *cdi, dvd_struct *s)
1832 u_char buf[4 + 188];
1833 struct packet_command cgc;
1834 struct cdrom_device_ops *cdo = cdi->ops;
1836 init_cdrom_command(&cgc, buf, sizeof(buf), CGC_DATA_READ);
1837 cgc.cmd[0] = GPCMD_READ_DVD_STRUCTURE;
1838 cgc.cmd[7] = s->type;
1839 cgc.cmd[9] = cgc.buflen = 0xff;
1841 if ((ret = cdo->generic_packet(cdi, &cgc)))
1844 s->bca.len = buf[0] << 8 | buf[1];
1845 if (s->bca.len < 12 || s->bca.len > 188) {
1846 cdinfo(CD_WARNING, "Received invalid BCA length (%d)\n", s->bca.len);
1849 memcpy(s->bca.value, &buf[4], s->bca.len);
1854 static int dvd_read_manufact(struct cdrom_device_info *cdi, dvd_struct *s)
1858 struct packet_command cgc;
1859 struct cdrom_device_ops *cdo = cdi->ops;
1861 size = sizeof(s->manufact.value) + 4;
1863 if ((buf = (u_char *) kmalloc(size, GFP_KERNEL)) == NULL)
1866 init_cdrom_command(&cgc, buf, size, CGC_DATA_READ);
1867 cgc.cmd[0] = GPCMD_READ_DVD_STRUCTURE;
1868 cgc.cmd[7] = s->type;
1869 cgc.cmd[8] = size >> 8;
1870 cgc.cmd[9] = size & 0xff;
1872 if ((ret = cdo->generic_packet(cdi, &cgc))) {
1877 s->manufact.len = buf[0] << 8 | buf[1];
1878 if (s->manufact.len < 0 || s->manufact.len > 2048) {
1879 cdinfo(CD_WARNING, "Received invalid manufacture info length"
1880 " (%d)\n", s->manufact.len);
1883 memcpy(s->manufact.value, &buf[4], s->manufact.len);
1890 static int dvd_read_struct(struct cdrom_device_info *cdi, dvd_struct *s)
1893 case DVD_STRUCT_PHYSICAL:
1894 return dvd_read_physical(cdi, s);
1896 case DVD_STRUCT_COPYRIGHT:
1897 return dvd_read_copyright(cdi, s);
1899 case DVD_STRUCT_DISCKEY:
1900 return dvd_read_disckey(cdi, s);
1902 case DVD_STRUCT_BCA:
1903 return dvd_read_bca(cdi, s);
1905 case DVD_STRUCT_MANUFACT:
1906 return dvd_read_manufact(cdi, s);
1909 cdinfo(CD_WARNING, ": Invalid DVD structure read requested (%d)\n",
1915 int cdrom_mode_sense(struct cdrom_device_info *cdi,
1916 struct packet_command *cgc,
1917 int page_code, int page_control)
1919 struct cdrom_device_ops *cdo = cdi->ops;
1921 memset(cgc->cmd, 0, sizeof(cgc->cmd));
1923 cgc->cmd[0] = GPCMD_MODE_SENSE_10;
1924 cgc->cmd[2] = page_code | (page_control << 6);
1925 cgc->cmd[7] = cgc->buflen >> 8;
1926 cgc->cmd[8] = cgc->buflen & 0xff;
1927 cgc->data_direction = CGC_DATA_READ;
1928 return cdo->generic_packet(cdi, cgc);
1931 int cdrom_mode_select(struct cdrom_device_info *cdi,
1932 struct packet_command *cgc)
1934 struct cdrom_device_ops *cdo = cdi->ops;
1936 memset(cgc->cmd, 0, sizeof(cgc->cmd));
1937 memset(cgc->buffer, 0, 2);
1938 cgc->cmd[0] = GPCMD_MODE_SELECT_10;
1939 cgc->cmd[1] = 0x10; /* PF */
1940 cgc->cmd[7] = cgc->buflen >> 8;
1941 cgc->cmd[8] = cgc->buflen & 0xff;
1942 cgc->data_direction = CGC_DATA_WRITE;
1943 return cdo->generic_packet(cdi, cgc);
1946 static int cdrom_read_subchannel(struct cdrom_device_info *cdi,
1947 struct cdrom_subchnl *subchnl, int mcn)
1949 struct cdrom_device_ops *cdo = cdi->ops;
1950 struct packet_command cgc;
1954 init_cdrom_command(&cgc, buffer, 16, CGC_DATA_READ);
1955 cgc.cmd[0] = GPCMD_READ_SUBCHANNEL;
1956 cgc.cmd[1] = 2; /* MSF addressing */
1957 cgc.cmd[2] = 0x40; /* request subQ data */
1958 cgc.cmd[3] = mcn ? 2 : 1;
1961 if ((ret = cdo->generic_packet(cdi, &cgc)))
1964 subchnl->cdsc_audiostatus = cgc.buffer[1];
1965 subchnl->cdsc_format = CDROM_MSF;
1966 subchnl->cdsc_ctrl = cgc.buffer[5] & 0xf;
1967 subchnl->cdsc_trk = cgc.buffer[6];
1968 subchnl->cdsc_ind = cgc.buffer[7];
1970 subchnl->cdsc_reladdr.msf.minute = cgc.buffer[13];
1971 subchnl->cdsc_reladdr.msf.second = cgc.buffer[14];
1972 subchnl->cdsc_reladdr.msf.frame = cgc.buffer[15];
1973 subchnl->cdsc_absaddr.msf.minute = cgc.buffer[9];
1974 subchnl->cdsc_absaddr.msf.second = cgc.buffer[10];
1975 subchnl->cdsc_absaddr.msf.frame = cgc.buffer[11];
1981 * Specific READ_10 interface
1983 static int cdrom_read_cd(struct cdrom_device_info *cdi,
1984 struct packet_command *cgc, int lba,
1985 int blocksize, int nblocks)
1987 struct cdrom_device_ops *cdo = cdi->ops;
1989 memset(&cgc->cmd, 0, sizeof(cgc->cmd));
1990 cgc->cmd[0] = GPCMD_READ_10;
1991 cgc->cmd[2] = (lba >> 24) & 0xff;
1992 cgc->cmd[3] = (lba >> 16) & 0xff;
1993 cgc->cmd[4] = (lba >> 8) & 0xff;
1994 cgc->cmd[5] = lba & 0xff;
1995 cgc->cmd[6] = (nblocks >> 16) & 0xff;
1996 cgc->cmd[7] = (nblocks >> 8) & 0xff;
1997 cgc->cmd[8] = nblocks & 0xff;
1998 cgc->buflen = blocksize * nblocks;
1999 return cdo->generic_packet(cdi, cgc);
2002 /* very generic interface for reading the various types of blocks */
2003 static int cdrom_read_block(struct cdrom_device_info *cdi,
2004 struct packet_command *cgc,
2005 int lba, int nblocks, int format, int blksize)
2007 struct cdrom_device_ops *cdo = cdi->ops;
2009 memset(&cgc->cmd, 0, sizeof(cgc->cmd));
2010 cgc->cmd[0] = GPCMD_READ_CD;
2011 /* expected sector size - cdda,mode1,etc. */
2012 cgc->cmd[1] = format << 2;
2013 /* starting address */
2014 cgc->cmd[2] = (lba >> 24) & 0xff;
2015 cgc->cmd[3] = (lba >> 16) & 0xff;
2016 cgc->cmd[4] = (lba >> 8) & 0xff;
2017 cgc->cmd[5] = lba & 0xff;
2018 /* number of blocks */
2019 cgc->cmd[6] = (nblocks >> 16) & 0xff;
2020 cgc->cmd[7] = (nblocks >> 8) & 0xff;
2021 cgc->cmd[8] = nblocks & 0xff;
2022 cgc->buflen = blksize * nblocks;
2024 /* set the header info returned */
2026 case CD_FRAMESIZE_RAW0 : cgc->cmd[9] = 0x58; break;
2027 case CD_FRAMESIZE_RAW1 : cgc->cmd[9] = 0x78; break;
2028 case CD_FRAMESIZE_RAW : cgc->cmd[9] = 0xf8; break;
2029 default : cgc->cmd[9] = 0x10;
2032 return cdo->generic_packet(cdi, cgc);
2035 static int cdrom_read_cdda_old(struct cdrom_device_info *cdi, __u8 __user *ubuf,
2036 int lba, int nframes)
2038 struct packet_command cgc;
2042 cdi->last_sense = 0;
2044 memset(&cgc, 0, sizeof(cgc));
2047 * start with will ra.nframes size, back down if alloc fails
2051 cgc.buffer = kmalloc(CD_FRAMESIZE_RAW * nr, GFP_KERNEL);
2061 if (!access_ok(VERIFY_WRITE, ubuf, nframes * CD_FRAMESIZE_RAW)) {
2066 cgc.data_direction = CGC_DATA_READ;
2067 while (nframes > 0) {
2071 ret = cdrom_read_block(cdi, &cgc, lba, nr, 1, CD_FRAMESIZE_RAW);
2074 if (__copy_to_user(ubuf, cgc.buffer, CD_FRAMESIZE_RAW * nr)) {
2078 ubuf += CD_FRAMESIZE_RAW * nr;
2087 static int cdrom_read_cdda_bpc(struct cdrom_device_info *cdi, __u8 __user *ubuf,
2088 int lba, int nframes)
2090 request_queue_t *q = cdi->disk->queue;
2099 rq = blk_get_request(q, READ, GFP_KERNEL);
2103 cdi->last_sense = 0;
2107 if (cdi->cdda_method == CDDA_BPC_SINGLE)
2109 if (nr * CD_FRAMESIZE_RAW > (q->max_sectors << 9))
2110 nr = (q->max_sectors << 9) / CD_FRAMESIZE_RAW;
2112 len = nr * CD_FRAMESIZE_RAW;
2114 ret = blk_rq_map_user(q, rq, ubuf, len);
2118 memset(rq->cmd, 0, sizeof(rq->cmd));
2119 rq->cmd[0] = GPCMD_READ_CD;
2120 rq->cmd[1] = 1 << 2;
2121 rq->cmd[2] = (lba >> 24) & 0xff;
2122 rq->cmd[3] = (lba >> 16) & 0xff;
2123 rq->cmd[4] = (lba >> 8) & 0xff;
2124 rq->cmd[5] = lba & 0xff;
2125 rq->cmd[6] = (nr >> 16) & 0xff;
2126 rq->cmd[7] = (nr >> 8) & 0xff;
2127 rq->cmd[8] = nr & 0xff;
2131 rq->flags |= REQ_BLOCK_PC;
2132 rq->timeout = 60 * HZ;
2136 blk_queue_bounce(q, &rq->bio);
2138 if (blk_execute_rq(q, cdi->disk, rq, 0)) {
2139 struct request_sense *s = rq->sense;
2141 cdi->last_sense = s->sense_key;
2144 if (blk_rq_unmap_user(bio, len))
2155 blk_put_request(rq);
2159 static int cdrom_read_cdda(struct cdrom_device_info *cdi, __u8 __user *ubuf,
2160 int lba, int nframes)
2164 if (cdi->cdda_method == CDDA_OLD)
2165 return cdrom_read_cdda_old(cdi, ubuf, lba, nframes);
2169 * for anything else than success and io error, we need to retry
2171 ret = cdrom_read_cdda_bpc(cdi, ubuf, lba, nframes);
2172 if (!ret || ret != -EIO)
2176 * I've seen drives get sense 4/8/3 udma crc errors on multi
2177 * frame dma, so drop to single frame dma if we need to
2179 if (cdi->cdda_method == CDDA_BPC_FULL && nframes > 1) {
2180 printk("cdrom: dropping to single frame dma\n");
2181 cdi->cdda_method = CDDA_BPC_SINGLE;
2186 * so we have an io error of some sort with multi frame dma. if the
2187 * condition wasn't a hardware error
2188 * problems, not for any error
2190 if (cdi->last_sense != 0x04 && cdi->last_sense != 0x0b)
2193 printk("cdrom: dropping to old style cdda (sense=%x)\n", cdi->last_sense);
2194 cdi->cdda_method = CDDA_OLD;
2195 return cdrom_read_cdda_old(cdi, ubuf, lba, nframes);
2198 static int cdrom_ioctl_multisession(struct cdrom_device_info *cdi,
2201 struct cdrom_multisession ms_info;
2202 u8 requested_format;
2205 cdinfo(CD_DO_IOCTL, "entering CDROMMULTISESSION\n");
2207 if (!(cdi->ops->capability & CDC_MULTI_SESSION))
2210 if (copy_from_user(&ms_info, argp, sizeof(ms_info)))
2213 requested_format = ms_info.addr_format;
2214 if (requested_format != CDROM_MSF && requested_format != CDROM_LBA)
2216 ms_info.addr_format = CDROM_LBA;
2218 ret = cdi->ops->get_last_session(cdi, &ms_info);
2222 sanitize_format(&ms_info.addr, &ms_info.addr_format, requested_format);
2224 if (copy_to_user(argp, &ms_info, sizeof(ms_info)))
2227 cdinfo(CD_DO_IOCTL, "CDROMMULTISESSION successful\n");
2231 static int cdrom_ioctl_eject(struct cdrom_device_info *cdi)
2233 cdinfo(CD_DO_IOCTL, "entering CDROMEJECT\n");
2235 if (!CDROM_CAN(CDC_OPEN_TRAY))
2237 if (cdi->use_count != 1 || keeplocked)
2239 if (CDROM_CAN(CDC_LOCK)) {
2240 int ret = cdi->ops->lock_door(cdi, 0);
2245 return cdi->ops->tray_move(cdi, 1);
2248 static int cdrom_ioctl_closetray(struct cdrom_device_info *cdi)
2250 cdinfo(CD_DO_IOCTL, "entering CDROMCLOSETRAY\n");
2252 if (!CDROM_CAN(CDC_CLOSE_TRAY))
2254 return cdi->ops->tray_move(cdi, 0);
2257 static int cdrom_ioctl_eject_sw(struct cdrom_device_info *cdi,
2260 cdinfo(CD_DO_IOCTL, "entering CDROMEJECT_SW\n");
2262 if (!CDROM_CAN(CDC_OPEN_TRAY))
2267 cdi->options &= ~(CDO_AUTO_CLOSE | CDO_AUTO_EJECT);
2269 cdi->options |= CDO_AUTO_CLOSE | CDO_AUTO_EJECT;
2273 static int cdrom_ioctl_media_changed(struct cdrom_device_info *cdi,
2276 struct cdrom_changer_info *info;
2279 cdinfo(CD_DO_IOCTL, "entering CDROM_MEDIA_CHANGED\n");
2281 if (!CDROM_CAN(CDC_MEDIA_CHANGED))
2284 /* cannot select disc or select current disc */
2285 if (!CDROM_CAN(CDC_SELECT_DISC) || arg == CDSL_CURRENT)
2286 return media_changed(cdi, 1);
2288 if ((unsigned int)arg >= cdi->capacity)
2291 info = kmalloc(sizeof(*info), GFP_KERNEL);
2295 ret = cdrom_read_mech_status(cdi, info);
2297 ret = info->slots[arg].change;
2302 static int cdrom_ioctl_set_options(struct cdrom_device_info *cdi,
2305 cdinfo(CD_DO_IOCTL, "entering CDROM_SET_OPTIONS\n");
2308 * Options need to be in sync with capability.
2309 * Too late for that, so we have to check each one separately.
2312 case CDO_USE_FFLAGS:
2313 case CDO_CHECK_TYPE:
2316 if (!CDROM_CAN(CDC_LOCK))
2320 return cdi->options;
2321 /* default is basically CDO_[AUTO_CLOSE|AUTO_EJECT] */
2323 if (!CDROM_CAN(arg))
2326 cdi->options |= (int) arg;
2327 return cdi->options;
2330 static int cdrom_ioctl_clear_options(struct cdrom_device_info *cdi,
2333 cdinfo(CD_DO_IOCTL, "entering CDROM_CLEAR_OPTIONS\n");
2335 cdi->options &= ~(int) arg;
2336 return cdi->options;
2339 static int cdrom_ioctl_select_speed(struct cdrom_device_info *cdi,
2342 cdinfo(CD_DO_IOCTL, "entering CDROM_SELECT_SPEED\n");
2344 if (!CDROM_CAN(CDC_SELECT_SPEED))
2346 return cdi->ops->select_speed(cdi, arg);
2349 static int cdrom_ioctl_select_disc(struct cdrom_device_info *cdi,
2352 cdinfo(CD_DO_IOCTL, "entering CDROM_SELECT_DISC\n");
2354 if (!CDROM_CAN(CDC_SELECT_DISC))
2357 if (arg != CDSL_CURRENT && arg != CDSL_NONE) {
2358 if ((int)arg >= cdi->capacity)
2363 * ->select_disc is a hook to allow a driver-specific way of
2364 * seleting disc. However, since there is no equivalent hook for
2365 * cdrom_slot_status this may not actually be useful...
2367 if (cdi->ops->select_disc)
2368 return cdi->ops->select_disc(cdi, arg);
2370 cdinfo(CD_CHANGER, "Using generic cdrom_select_disc()\n");
2371 return cdrom_select_disc(cdi, arg);
2374 static int cdrom_ioctl_reset(struct cdrom_device_info *cdi,
2375 struct block_device *bdev)
2377 cdinfo(CD_DO_IOCTL, "entering CDROM_RESET\n");
2379 if (!capable(CAP_SYS_ADMIN))
2381 if (!CDROM_CAN(CDC_RESET))
2383 invalidate_bdev(bdev, 0);
2384 return cdi->ops->reset(cdi);
2387 static int cdrom_ioctl_lock_door(struct cdrom_device_info *cdi,
2390 cdinfo(CD_DO_IOCTL, "%socking door.\n", arg ? "L" : "Unl");
2392 if (!CDROM_CAN(CDC_LOCK))
2393 return -EDRIVE_CANT_DO_THIS;
2395 keeplocked = arg ? 1 : 0;
2398 * Don't unlock the door on multiple opens by default, but allow
2401 if (cdi->use_count != 1 && !arg && !capable(CAP_SYS_ADMIN))
2403 return cdi->ops->lock_door(cdi, arg);
2406 static int cdrom_ioctl_debug(struct cdrom_device_info *cdi,
2409 cdinfo(CD_DO_IOCTL, "%sabling debug.\n", arg ? "En" : "Dis");
2411 if (!capable(CAP_SYS_ADMIN))
2413 debug = arg ? 1 : 0;
2417 static int cdrom_ioctl_get_capability(struct cdrom_device_info *cdi)
2419 cdinfo(CD_DO_IOCTL, "entering CDROM_GET_CAPABILITY\n");
2420 return (cdi->ops->capability & ~cdi->mask);
2424 * The following function is implemented, although very few audio
2425 * discs give Universal Product Code information, which should just be
2426 * the Medium Catalog Number on the box. Note, that the way the code
2427 * is written on the CD is /not/ uniform across all discs!
2429 static int cdrom_ioctl_get_mcn(struct cdrom_device_info *cdi,
2432 struct cdrom_mcn mcn;
2435 cdinfo(CD_DO_IOCTL, "entering CDROM_GET_MCN\n");
2437 if (!(cdi->ops->capability & CDC_MCN))
2439 ret = cdi->ops->get_mcn(cdi, &mcn);
2443 if (copy_to_user(argp, &mcn, sizeof(mcn)))
2445 cdinfo(CD_DO_IOCTL, "CDROM_GET_MCN successful\n");
2449 static int cdrom_ioctl_drive_status(struct cdrom_device_info *cdi,
2452 cdinfo(CD_DO_IOCTL, "entering CDROM_DRIVE_STATUS\n");
2454 if (!(cdi->ops->capability & CDC_DRIVE_STATUS))
2456 if (!CDROM_CAN(CDC_SELECT_DISC) ||
2457 (arg == CDSL_CURRENT || arg == CDSL_NONE))
2458 return cdi->ops->drive_status(cdi, CDSL_CURRENT);
2459 if (((int)arg >= cdi->capacity))
2461 return cdrom_slot_status(cdi, arg);
2465 * Ok, this is where problems start. The current interface for the
2466 * CDROM_DISC_STATUS ioctl is flawed. It makes the false assumption that
2467 * CDs are all CDS_DATA_1 or all CDS_AUDIO, etc. Unfortunatly, while this
2468 * is often the case, it is also very common for CDs to have some tracks
2469 * with data, and some tracks with audio. Just because I feel like it,
2470 * I declare the following to be the best way to cope. If the CD has ANY
2471 * data tracks on it, it will be returned as a data CD. If it has any XA
2472 * tracks, I will return it as that. Now I could simplify this interface
2473 * by combining these returns with the above, but this more clearly
2474 * demonstrates the problem with the current interface. Too bad this
2475 * wasn't designed to use bitmasks... -Erik
2477 * Well, now we have the option CDS_MIXED: a mixed-type CD.
2478 * User level programmers might feel the ioctl is not very useful.
2481 static int cdrom_ioctl_disc_status(struct cdrom_device_info *cdi)
2485 cdinfo(CD_DO_IOCTL, "entering CDROM_DISC_STATUS\n");
2487 cdrom_count_tracks(cdi, &tracks);
2489 return tracks.error;
2491 /* Policy mode on */
2492 if (tracks.audio > 0) {
2493 if (!tracks.data && !tracks.cdi && !tracks.xa)
2503 if (tracks.data > 0)
2505 /* Policy mode off */
2507 cdinfo(CD_WARNING,"This disc doesn't have any tracks I recognize!\n");
2511 static int cdrom_ioctl_changer_nslots(struct cdrom_device_info *cdi)
2513 cdinfo(CD_DO_IOCTL, "entering CDROM_CHANGER_NSLOTS\n");
2514 return cdi->capacity;
2517 static int cdrom_ioctl_get_subchnl(struct cdrom_device_info *cdi,
2520 struct cdrom_subchnl q;
2524 /* cdinfo(CD_DO_IOCTL,"entering CDROMSUBCHNL\n");*/
2526 if (!CDROM_CAN(CDC_PLAY_AUDIO))
2528 if (copy_from_user(&q, argp, sizeof(q)))
2531 requested = q.cdsc_format;
2532 if (requested != CDROM_MSF && requested != CDROM_LBA)
2534 q.cdsc_format = CDROM_MSF;
2536 ret = cdi->ops->audio_ioctl(cdi, CDROMSUBCHNL, &q);
2540 back = q.cdsc_format; /* local copy */
2541 sanitize_format(&q.cdsc_absaddr, &back, requested);
2542 sanitize_format(&q.cdsc_reladdr, &q.cdsc_format, requested);
2544 if (copy_to_user(argp, &q, sizeof(q)))
2546 /* cdinfo(CD_DO_IOCTL, "CDROMSUBCHNL successful\n"); */
2550 static int cdrom_ioctl_read_tochdr(struct cdrom_device_info *cdi,
2553 struct cdrom_tochdr header;
2556 /* cdinfo(CD_DO_IOCTL, "entering CDROMREADTOCHDR\n"); */
2558 if (!CDROM_CAN(CDC_PLAY_AUDIO))
2560 if (copy_from_user(&header, argp, sizeof(header)))
2563 ret = cdi->ops->audio_ioctl(cdi, CDROMREADTOCHDR, &header);
2567 if (copy_to_user(argp, &header, sizeof(header)))
2569 /* cdinfo(CD_DO_IOCTL, "CDROMREADTOCHDR successful\n"); */
2573 static int cdrom_ioctl_read_tocentry(struct cdrom_device_info *cdi,
2576 struct cdrom_tocentry entry;
2577 u8 requested_format;
2580 /* cdinfo(CD_DO_IOCTL, "entering CDROMREADTOCENTRY\n"); */
2582 if (!CDROM_CAN(CDC_PLAY_AUDIO))
2584 if (copy_from_user(&entry, argp, sizeof(entry)))
2587 requested_format = entry.cdte_format;
2588 if (requested_format != CDROM_MSF && requested_format != CDROM_LBA)
2590 /* make interface to low-level uniform */
2591 entry.cdte_format = CDROM_MSF;
2592 ret = cdi->ops->audio_ioctl(cdi, CDROMREADTOCENTRY, &entry);
2595 sanitize_format(&entry.cdte_addr, &entry.cdte_format, requested_format);
2597 if (copy_to_user(argp, &entry, sizeof(entry)))
2599 /* cdinfo(CD_DO_IOCTL, "CDROMREADTOCENTRY successful\n"); */
2603 static int cdrom_ioctl_play_msf(struct cdrom_device_info *cdi,
2606 struct cdrom_msf msf;
2608 cdinfo(CD_DO_IOCTL, "entering CDROMPLAYMSF\n");
2610 if (!CDROM_CAN(CDC_PLAY_AUDIO))
2612 if (copy_from_user(&msf, argp, sizeof(msf)))
2614 return cdi->ops->audio_ioctl(cdi, CDROMPLAYMSF, &msf);
2617 static int cdrom_ioctl_play_trkind(struct cdrom_device_info *cdi,
2623 cdinfo(CD_DO_IOCTL, "entering CDROMPLAYTRKIND\n");
2625 if (!CDROM_CAN(CDC_PLAY_AUDIO))
2627 if (copy_from_user(&ti, argp, sizeof(ti)))
2630 ret = check_for_audio_disc(cdi, cdi->ops);
2633 return cdi->ops->audio_ioctl(cdi, CDROMPLAYTRKIND, &ti);
2635 static int cdrom_ioctl_volctrl(struct cdrom_device_info *cdi,
2638 struct cdrom_volctrl volume;
2640 cdinfo(CD_DO_IOCTL, "entering CDROMVOLCTRL\n");
2642 if (!CDROM_CAN(CDC_PLAY_AUDIO))
2644 if (copy_from_user(&volume, argp, sizeof(volume)))
2646 return cdi->ops->audio_ioctl(cdi, CDROMVOLCTRL, &volume);
2649 static int cdrom_ioctl_volread(struct cdrom_device_info *cdi,
2652 struct cdrom_volctrl volume;
2655 cdinfo(CD_DO_IOCTL, "entering CDROMVOLREAD\n");
2657 if (!CDROM_CAN(CDC_PLAY_AUDIO))
2660 ret = cdi->ops->audio_ioctl(cdi, CDROMVOLREAD, &volume);
2664 if (copy_to_user(argp, &volume, sizeof(volume)))
2669 static int cdrom_ioctl_audioctl(struct cdrom_device_info *cdi,
2674 cdinfo(CD_DO_IOCTL, "doing audio ioctl (start/stop/pause/resume)\n");
2676 if (!CDROM_CAN(CDC_PLAY_AUDIO))
2678 ret = check_for_audio_disc(cdi, cdi->ops);
2681 return cdi->ops->audio_ioctl(cdi, cmd, NULL);
2685 * Just about every imaginable ioctl is supported in the Uniform layer
2687 * ATAPI / SCSI specific code now mainly resides in mmc_ioctl().
2689 int cdrom_ioctl(struct file * file, struct cdrom_device_info *cdi,
2690 struct inode *ip, unsigned int cmd, unsigned long arg)
2692 void __user *argp = (void __user *)arg;
2696 * Try the generic SCSI command ioctl's first.
2698 ret = scsi_cmd_ioctl(file, ip->i_bdev->bd_disk, cmd, argp);
2703 case CDROMMULTISESSION:
2704 return cdrom_ioctl_multisession(cdi, argp);
2706 return cdrom_ioctl_eject(cdi);
2707 case CDROMCLOSETRAY:
2708 return cdrom_ioctl_closetray(cdi);
2710 return cdrom_ioctl_eject_sw(cdi, arg);
2711 case CDROM_MEDIA_CHANGED:
2712 return cdrom_ioctl_media_changed(cdi, arg);
2713 case CDROM_SET_OPTIONS:
2714 return cdrom_ioctl_set_options(cdi, arg);
2715 case CDROM_CLEAR_OPTIONS:
2716 return cdrom_ioctl_clear_options(cdi, arg);
2717 case CDROM_SELECT_SPEED:
2718 return cdrom_ioctl_select_speed(cdi, arg);
2719 case CDROM_SELECT_DISC:
2720 return cdrom_ioctl_select_disc(cdi, arg);
2722 return cdrom_ioctl_reset(cdi, ip->i_bdev);
2723 case CDROM_LOCKDOOR:
2724 return cdrom_ioctl_lock_door(cdi, arg);
2726 return cdrom_ioctl_debug(cdi, arg);
2727 case CDROM_GET_CAPABILITY:
2728 return cdrom_ioctl_get_capability(cdi);
2730 return cdrom_ioctl_get_mcn(cdi, argp);
2731 case CDROM_DRIVE_STATUS:
2732 return cdrom_ioctl_drive_status(cdi, arg);
2733 case CDROM_DISC_STATUS:
2734 return cdrom_ioctl_disc_status(cdi);
2735 case CDROM_CHANGER_NSLOTS:
2736 return cdrom_ioctl_changer_nslots(cdi);
2740 * Use the ioctls that are implemented through the generic_packet()
2741 * interface. this may look at bit funny, but if -ENOTTY is
2742 * returned that particular ioctl is not implemented and we
2743 * let it go through the device specific ones.
2745 if (CDROM_CAN(CDC_GENERIC_PACKET)) {
2746 ret = mmc_ioctl(cdi, cmd, arg);
2752 * Note: most of the cdinfo() calls are commented out here,
2753 * because they fill up the sys log when CD players poll
2758 return cdrom_ioctl_get_subchnl(cdi, argp);
2759 case CDROMREADTOCHDR:
2760 return cdrom_ioctl_read_tochdr(cdi, argp);
2761 case CDROMREADTOCENTRY:
2762 return cdrom_ioctl_read_tocentry(cdi, argp);
2764 return cdrom_ioctl_play_msf(cdi, argp);
2765 case CDROMPLAYTRKIND:
2766 return cdrom_ioctl_play_trkind(cdi, argp);
2768 return cdrom_ioctl_volctrl(cdi, argp);
2770 return cdrom_ioctl_volread(cdi, argp);
2775 return cdrom_ioctl_audioctl(cdi, cmd);
2782 int msf_to_lba(char m, char s, char f)
2784 return (((m * CD_SECS) + s) * CD_FRAMES + f) - CD_MSF_OFFSET;
2788 * Required when we need to use READ_10 to issue other than 2048 block
2791 static int cdrom_switch_blocksize(struct cdrom_device_info *cdi, int size)
2793 struct cdrom_device_ops *cdo = cdi->ops;
2794 struct packet_command cgc;
2795 struct modesel_head mh;
2797 memset(&mh, 0, sizeof(mh));
2798 mh.block_desc_length = 0x08;
2799 mh.block_length_med = (size >> 8) & 0xff;
2800 mh.block_length_lo = size & 0xff;
2802 memset(&cgc, 0, sizeof(cgc));
2804 cgc.cmd[1] = 1 << 4;
2806 cgc.buflen = sizeof(mh);
2807 cgc.buffer = (char *) &mh;
2808 cgc.data_direction = CGC_DATA_WRITE;
2809 mh.block_desc_length = 0x08;
2810 mh.block_length_med = (size >> 8) & 0xff;
2811 mh.block_length_lo = size & 0xff;
2813 return cdo->generic_packet(cdi, &cgc);
2816 static int mmc_ioctl(struct cdrom_device_info *cdi, unsigned int cmd,
2819 struct cdrom_device_ops *cdo = cdi->ops;
2820 struct packet_command cgc;
2821 struct request_sense sense;
2822 unsigned char buffer[32];
2825 memset(&cgc, 0, sizeof(cgc));
2827 /* build a unified command and queue it through
2828 cdo->generic_packet() */
2831 case CDROMREADMODE1:
2832 case CDROMREADMODE2: {
2833 struct cdrom_msf msf;
2834 int blocksize = 0, format = 0, lba;
2838 blocksize = CD_FRAMESIZE_RAW;
2840 case CDROMREADMODE1:
2841 blocksize = CD_FRAMESIZE;
2844 case CDROMREADMODE2:
2845 blocksize = CD_FRAMESIZE_RAW0;
2848 IOCTL_IN(arg, struct cdrom_msf, msf);
2849 lba = msf_to_lba(msf.cdmsf_min0,msf.cdmsf_sec0,msf.cdmsf_frame0);
2850 /* FIXME: we need upper bound checking, too!! */
2853 cgc.buffer = (char *) kmalloc(blocksize, GFP_KERNEL);
2854 if (cgc.buffer == NULL)
2856 memset(&sense, 0, sizeof(sense));
2858 cgc.data_direction = CGC_DATA_READ;
2859 ret = cdrom_read_block(cdi, &cgc, lba, 1, format, blocksize);
2860 if (ret && sense.sense_key==0x05 && sense.asc==0x20 && sense.ascq==0x00) {
2862 * SCSI-II devices are not required to support
2863 * READ_CD, so let's try switching block size
2865 /* FIXME: switch back again... */
2866 if ((ret = cdrom_switch_blocksize(cdi, blocksize))) {
2871 ret = cdrom_read_cd(cdi, &cgc, lba, blocksize, 1);
2872 ret |= cdrom_switch_blocksize(cdi, blocksize);
2874 if (!ret && copy_to_user((char __user *)arg, cgc.buffer, blocksize))
2879 case CDROMREADAUDIO: {
2880 struct cdrom_read_audio ra;
2883 IOCTL_IN(arg, struct cdrom_read_audio, ra);
2885 if (ra.addr_format == CDROM_MSF)
2886 lba = msf_to_lba(ra.addr.msf.minute,
2889 else if (ra.addr_format == CDROM_LBA)
2894 /* FIXME: we need upper bound checking, too!! */
2895 if (lba < 0 || ra.nframes <= 0 || ra.nframes > CD_FRAMES)
2898 return cdrom_read_cdda(cdi, ra.buf, lba, ra.nframes);
2900 case CDROMSUBCHNL: {
2901 struct cdrom_subchnl q;
2902 u_char requested, back;
2903 IOCTL_IN(arg, struct cdrom_subchnl, q);
2904 requested = q.cdsc_format;
2905 if (!((requested == CDROM_MSF) ||
2906 (requested == CDROM_LBA)))
2908 q.cdsc_format = CDROM_MSF;
2909 if ((ret = cdrom_read_subchannel(cdi, &q, 0)))
2911 back = q.cdsc_format; /* local copy */
2912 sanitize_format(&q.cdsc_absaddr, &back, requested);
2913 sanitize_format(&q.cdsc_reladdr, &q.cdsc_format, requested);
2914 IOCTL_OUT(arg, struct cdrom_subchnl, q);
2915 /* cdinfo(CD_DO_IOCTL, "CDROMSUBCHNL successful\n"); */
2918 case CDROMPLAYMSF: {
2919 struct cdrom_msf msf;
2920 cdinfo(CD_DO_IOCTL, "entering CDROMPLAYMSF\n");
2921 IOCTL_IN(arg, struct cdrom_msf, msf);
2922 cgc.cmd[0] = GPCMD_PLAY_AUDIO_MSF;
2923 cgc.cmd[3] = msf.cdmsf_min0;
2924 cgc.cmd[4] = msf.cdmsf_sec0;
2925 cgc.cmd[5] = msf.cdmsf_frame0;
2926 cgc.cmd[6] = msf.cdmsf_min1;
2927 cgc.cmd[7] = msf.cdmsf_sec1;
2928 cgc.cmd[8] = msf.cdmsf_frame1;
2929 cgc.data_direction = CGC_DATA_NONE;
2930 return cdo->generic_packet(cdi, &cgc);
2932 case CDROMPLAYBLK: {
2933 struct cdrom_blk blk;
2934 cdinfo(CD_DO_IOCTL, "entering CDROMPLAYBLK\n");
2935 IOCTL_IN(arg, struct cdrom_blk, blk);
2936 cgc.cmd[0] = GPCMD_PLAY_AUDIO_10;
2937 cgc.cmd[2] = (blk.from >> 24) & 0xff;
2938 cgc.cmd[3] = (blk.from >> 16) & 0xff;
2939 cgc.cmd[4] = (blk.from >> 8) & 0xff;
2940 cgc.cmd[5] = blk.from & 0xff;
2941 cgc.cmd[7] = (blk.len >> 8) & 0xff;
2942 cgc.cmd[8] = blk.len & 0xff;
2943 cgc.data_direction = CGC_DATA_NONE;
2944 return cdo->generic_packet(cdi, &cgc);
2947 case CDROMVOLREAD: {
2948 struct cdrom_volctrl volctrl;
2949 char mask[sizeof(buffer)];
2950 unsigned short offset;
2952 cdinfo(CD_DO_IOCTL, "entering CDROMVOLUME\n");
2954 IOCTL_IN(arg, struct cdrom_volctrl, volctrl);
2956 cgc.buffer = buffer;
2958 if ((ret = cdrom_mode_sense(cdi, &cgc, GPMODE_AUDIO_CTL_PAGE, 0)))
2961 /* originally the code depended on buffer[1] to determine
2962 how much data is available for transfer. buffer[1] is
2963 unfortunately ambigious and the only reliable way seem
2964 to be to simply skip over the block descriptor... */
2965 offset = 8 + be16_to_cpu(*(unsigned short *)(buffer+6));
2967 if (offset + 16 > sizeof(buffer))
2970 if (offset + 16 > cgc.buflen) {
2971 cgc.buflen = offset+16;
2972 ret = cdrom_mode_sense(cdi, &cgc,
2973 GPMODE_AUDIO_CTL_PAGE, 0);
2979 if ((buffer[offset] & 0x3f) != GPMODE_AUDIO_CTL_PAGE ||
2980 buffer[offset+1] < 14)
2983 /* now we have the current volume settings. if it was only
2984 a CDROMVOLREAD, return these values */
2985 if (cmd == CDROMVOLREAD) {
2986 volctrl.channel0 = buffer[offset+9];
2987 volctrl.channel1 = buffer[offset+11];
2988 volctrl.channel2 = buffer[offset+13];
2989 volctrl.channel3 = buffer[offset+15];
2990 IOCTL_OUT(arg, struct cdrom_volctrl, volctrl);
2994 /* get the volume mask */
2996 if ((ret = cdrom_mode_sense(cdi, &cgc,
2997 GPMODE_AUDIO_CTL_PAGE, 1)))
3000 buffer[offset+9] = volctrl.channel0 & mask[offset+9];
3001 buffer[offset+11] = volctrl.channel1 & mask[offset+11];
3002 buffer[offset+13] = volctrl.channel2 & mask[offset+13];
3003 buffer[offset+15] = volctrl.channel3 & mask[offset+15];
3006 cgc.buffer = buffer + offset - 8;
3007 memset(cgc.buffer, 0, 8);
3008 return cdrom_mode_select(cdi, &cgc);
3013 cdinfo(CD_DO_IOCTL, "entering CDROMSTART/CDROMSTOP\n");
3014 cgc.cmd[0] = GPCMD_START_STOP_UNIT;
3016 cgc.cmd[4] = (cmd == CDROMSTART) ? 1 : 0;
3017 cgc.data_direction = CGC_DATA_NONE;
3018 return cdo->generic_packet(cdi, &cgc);
3023 cdinfo(CD_DO_IOCTL, "entering CDROMPAUSE/CDROMRESUME\n");
3024 cgc.cmd[0] = GPCMD_PAUSE_RESUME;
3025 cgc.cmd[8] = (cmd == CDROMRESUME) ? 1 : 0;
3026 cgc.data_direction = CGC_DATA_NONE;
3027 return cdo->generic_packet(cdi, &cgc);
3030 case DVD_READ_STRUCT: {
3032 int size = sizeof(dvd_struct);
3033 if (!CDROM_CAN(CDC_DVD))
3035 if ((s = (dvd_struct *) kmalloc(size, GFP_KERNEL)) == NULL)
3037 cdinfo(CD_DO_IOCTL, "entering DVD_READ_STRUCT\n");
3038 if (copy_from_user(s, (dvd_struct __user *)arg, size)) {
3042 if ((ret = dvd_read_struct(cdi, s))) {
3046 if (copy_to_user((dvd_struct __user *)arg, s, size))
3054 if (!CDROM_CAN(CDC_DVD))
3056 cdinfo(CD_DO_IOCTL, "entering DVD_AUTH\n");
3057 IOCTL_IN(arg, dvd_authinfo, ai);
3058 if ((ret = dvd_do_auth (cdi, &ai)))
3060 IOCTL_OUT(arg, dvd_authinfo, ai);
3064 case CDROM_NEXT_WRITABLE: {
3066 cdinfo(CD_DO_IOCTL, "entering CDROM_NEXT_WRITABLE\n");
3067 if ((ret = cdrom_get_next_writable(cdi, &next)))
3069 IOCTL_OUT(arg, long, next);
3072 case CDROM_LAST_WRITTEN: {
3074 cdinfo(CD_DO_IOCTL, "entering CDROM_LAST_WRITTEN\n");
3075 if ((ret = cdrom_get_last_written(cdi, &last)))
3077 IOCTL_OUT(arg, long, last);
3085 static int cdrom_get_track_info(struct cdrom_device_info *cdi, __u16 track, __u8 type,
3086 track_information *ti)
3088 struct cdrom_device_ops *cdo = cdi->ops;
3089 struct packet_command cgc;
3092 init_cdrom_command(&cgc, ti, 8, CGC_DATA_READ);
3093 cgc.cmd[0] = GPCMD_READ_TRACK_RZONE_INFO;
3094 cgc.cmd[1] = type & 3;
3095 cgc.cmd[4] = (track & 0xff00) >> 8;
3096 cgc.cmd[5] = track & 0xff;
3100 if ((ret = cdo->generic_packet(cdi, &cgc)))
3103 buflen = be16_to_cpu(ti->track_information_length) +
3104 sizeof(ti->track_information_length);
3106 if (buflen > sizeof(track_information))
3107 buflen = sizeof(track_information);
3109 cgc.cmd[8] = cgc.buflen = buflen;
3110 if ((ret = cdo->generic_packet(cdi, &cgc)))
3113 /* return actual fill size */
3117 /* requires CD R/RW */
3118 static int cdrom_get_disc_info(struct cdrom_device_info *cdi, disc_information *di)
3120 struct cdrom_device_ops *cdo = cdi->ops;
3121 struct packet_command cgc;
3124 /* set up command and get the disc info */
3125 init_cdrom_command(&cgc, di, sizeof(*di), CGC_DATA_READ);
3126 cgc.cmd[0] = GPCMD_READ_DISC_INFO;
3127 cgc.cmd[8] = cgc.buflen = 2;
3130 if ((ret = cdo->generic_packet(cdi, &cgc)))
3133 /* not all drives have the same disc_info length, so requeue
3134 * packet with the length the drive tells us it can supply
3136 buflen = be16_to_cpu(di->disc_information_length) +
3137 sizeof(di->disc_information_length);
3139 if (buflen > sizeof(disc_information))
3140 buflen = sizeof(disc_information);
3142 cgc.cmd[8] = cgc.buflen = buflen;
3143 if ((ret = cdo->generic_packet(cdi, &cgc)))
3146 /* return actual fill size */
3150 /* return the last written block on the CD-R media. this is for the udf
3152 int cdrom_get_last_written(struct cdrom_device_info *cdi, long *last_written)
3154 struct cdrom_tocentry toc;
3155 disc_information di;
3156 track_information ti;
3158 int ret = -1, ti_size;
3160 if (!CDROM_CAN(CDC_GENERIC_PACKET))
3163 ret = cdrom_get_disc_info(cdi, &di);
3164 if (ret < (int)(offsetof(typeof(di), last_track_lsb)
3165 + sizeof(di.last_track_lsb)))
3168 /* if unit didn't return msb, it's zeroed by cdrom_get_disc_info */
3169 last_track = (di.last_track_msb << 8) | di.last_track_lsb;
3170 ti_size = cdrom_get_track_info(cdi, last_track, 1, &ti);
3171 if (ti_size < (int)offsetof(typeof(ti), track_start))
3174 /* if this track is blank, try the previous. */
3179 ti_size = cdrom_get_track_info(cdi, last_track, 1, &ti);
3182 if (ti_size < (int)(offsetof(typeof(ti), track_size)
3183 + sizeof(ti.track_size)))
3186 /* if last recorded field is valid, return it. */
3187 if (ti.lra_v && ti_size >= (int)(offsetof(typeof(ti), last_rec_address)
3188 + sizeof(ti.last_rec_address))) {
3189 *last_written = be32_to_cpu(ti.last_rec_address);
3191 /* make it up instead */
3192 *last_written = be32_to_cpu(ti.track_start) +
3193 be32_to_cpu(ti.track_size);
3195 *last_written -= (be32_to_cpu(ti.free_blocks) + 7);
3199 /* this is where we end up if the drive either can't do a
3200 GPCMD_READ_DISC_INFO or GPCMD_READ_TRACK_RZONE_INFO or if
3201 it doesn't give enough information or fails. then we return
3202 the toc contents. */
3204 toc.cdte_format = CDROM_MSF;
3205 toc.cdte_track = CDROM_LEADOUT;
3206 if ((ret = cdi->ops->audio_ioctl(cdi, CDROMREADTOCENTRY, &toc)))
3208 sanitize_format(&toc.cdte_addr, &toc.cdte_format, CDROM_LBA);
3209 *last_written = toc.cdte_addr.lba;
3213 /* return the next writable block. also for udf file system. */
3214 static int cdrom_get_next_writable(struct cdrom_device_info *cdi, long *next_writable)
3216 disc_information di;
3217 track_information ti;
3221 if (!CDROM_CAN(CDC_GENERIC_PACKET))
3222 goto use_last_written;
3224 ret = cdrom_get_disc_info(cdi, &di);
3225 if (ret < 0 || ret < offsetof(typeof(di), last_track_lsb)
3226 + sizeof(di.last_track_lsb))
3227 goto use_last_written;
3229 /* if unit didn't return msb, it's zeroed by cdrom_get_disc_info */
3230 last_track = (di.last_track_msb << 8) | di.last_track_lsb;
3231 ti_size = cdrom_get_track_info(cdi, last_track, 1, &ti);
3232 if (ti_size < 0 || ti_size < offsetof(typeof(ti), track_start))
3233 goto use_last_written;
3235 /* if this track is blank, try the previous. */
3237 if (last_track == 1)
3238 goto use_last_written;
3240 ti_size = cdrom_get_track_info(cdi, last_track, 1, &ti);
3242 goto use_last_written;
3245 /* if next recordable address field is valid, use it. */
3246 if (ti.nwa_v && ti_size >= offsetof(typeof(ti), next_writable)
3247 + sizeof(ti.next_writable)) {
3248 *next_writable = be32_to_cpu(ti.next_writable);
3253 if ((ret = cdrom_get_last_written(cdi, next_writable))) {
3257 *next_writable += 7;
3262 EXPORT_SYMBOL(cdrom_get_last_written);
3263 EXPORT_SYMBOL(register_cdrom);
3264 EXPORT_SYMBOL(unregister_cdrom);
3265 EXPORT_SYMBOL(cdrom_open);
3266 EXPORT_SYMBOL(cdrom_release);
3267 EXPORT_SYMBOL(cdrom_ioctl);
3268 EXPORT_SYMBOL(cdrom_media_changed);
3269 EXPORT_SYMBOL(cdrom_number_of_slots);
3270 EXPORT_SYMBOL(cdrom_mode_select);
3271 EXPORT_SYMBOL(cdrom_mode_sense);
3272 EXPORT_SYMBOL(init_cdrom_command);
3273 EXPORT_SYMBOL(cdrom_get_media_event);
3275 #ifdef CONFIG_SYSCTL
3277 #define CDROM_STR_SIZE 1000
3279 static struct cdrom_sysctl_settings {
3280 char info[CDROM_STR_SIZE]; /* general info */
3281 int autoclose; /* close tray upon mount, etc */
3282 int autoeject; /* eject on umount */
3283 int debug; /* turn on debugging messages */
3284 int lock; /* lock the door on device open */
3285 int check; /* check media type */
3286 } cdrom_sysctl_settings;
3288 static int cdrom_sysctl_info(ctl_table *ctl, int write, struct file * filp,
3289 void __user *buffer, size_t *lenp, loff_t *ppos)
3292 struct cdrom_device_info *cdi;
3293 char *info = cdrom_sysctl_settings.info;
3295 if (!*lenp || (*ppos && !write)) {
3300 pos = sprintf(info, "CD-ROM information, " VERSION "\n");
3302 pos += sprintf(info+pos, "\ndrive name:\t");
3303 for (cdi=topCdromPtr;cdi!=NULL;cdi=cdi->next)
3304 pos += sprintf(info+pos, "\t%s", cdi->name);
3306 pos += sprintf(info+pos, "\ndrive speed:\t");
3307 for (cdi=topCdromPtr;cdi!=NULL;cdi=cdi->next)
3308 pos += sprintf(info+pos, "\t%d", cdi->speed);
3310 pos += sprintf(info+pos, "\ndrive # of slots:");
3311 for (cdi=topCdromPtr;cdi!=NULL;cdi=cdi->next)
3312 pos += sprintf(info+pos, "\t%d", cdi->capacity);
3314 pos += sprintf(info+pos, "\nCan close tray:\t");
3315 for (cdi=topCdromPtr;cdi!=NULL;cdi=cdi->next)
3316 pos += sprintf(info+pos, "\t%d", CDROM_CAN(CDC_CLOSE_TRAY) != 0);
3318 pos += sprintf(info+pos, "\nCan open tray:\t");
3319 for (cdi=topCdromPtr;cdi!=NULL;cdi=cdi->next)
3320 pos += sprintf(info+pos, "\t%d", CDROM_CAN(CDC_OPEN_TRAY) != 0);
3322 pos += sprintf(info+pos, "\nCan lock tray:\t");
3323 for (cdi=topCdromPtr;cdi!=NULL;cdi=cdi->next)
3324 pos += sprintf(info+pos, "\t%d", CDROM_CAN(CDC_LOCK) != 0);
3326 pos += sprintf(info+pos, "\nCan change speed:");
3327 for (cdi=topCdromPtr;cdi!=NULL;cdi=cdi->next)
3328 pos += sprintf(info+pos, "\t%d", CDROM_CAN(CDC_SELECT_SPEED) != 0);
3330 pos += sprintf(info+pos, "\nCan select disk:");
3331 for (cdi=topCdromPtr;cdi!=NULL;cdi=cdi->next)
3332 pos += sprintf(info+pos, "\t%d", CDROM_CAN(CDC_SELECT_DISC) != 0);
3334 pos += sprintf(info+pos, "\nCan read multisession:");
3335 for (cdi=topCdromPtr;cdi!=NULL;cdi=cdi->next)
3336 pos += sprintf(info+pos, "\t%d", CDROM_CAN(CDC_MULTI_SESSION) != 0);
3338 pos += sprintf(info+pos, "\nCan read MCN:\t");
3339 for (cdi=topCdromPtr;cdi!=NULL;cdi=cdi->next)
3340 pos += sprintf(info+pos, "\t%d", CDROM_CAN(CDC_MCN) != 0);
3342 pos += sprintf(info+pos, "\nReports media changed:");
3343 for (cdi=topCdromPtr;cdi!=NULL;cdi=cdi->next)
3344 pos += sprintf(info+pos, "\t%d", CDROM_CAN(CDC_MEDIA_CHANGED) != 0);
3346 pos += sprintf(info+pos, "\nCan play audio:\t");
3347 for (cdi=topCdromPtr;cdi!=NULL;cdi=cdi->next)
3348 pos += sprintf(info+pos, "\t%d", CDROM_CAN(CDC_PLAY_AUDIO) != 0);
3350 pos += sprintf(info+pos, "\nCan write CD-R:\t");
3351 for (cdi=topCdromPtr;cdi!=NULL;cdi=cdi->next)
3352 pos += sprintf(info+pos, "\t%d", CDROM_CAN(CDC_CD_R) != 0);
3354 pos += sprintf(info+pos, "\nCan write CD-RW:");
3355 for (cdi=topCdromPtr;cdi!=NULL;cdi=cdi->next)
3356 pos += sprintf(info+pos, "\t%d", CDROM_CAN(CDC_CD_RW) != 0);
3358 pos += sprintf(info+pos, "\nCan read DVD:\t");
3359 for (cdi=topCdromPtr;cdi!=NULL;cdi=cdi->next)
3360 pos += sprintf(info+pos, "\t%d", CDROM_CAN(CDC_DVD) != 0);
3362 pos += sprintf(info+pos, "\nCan write DVD-R:");
3363 for (cdi=topCdromPtr;cdi!=NULL;cdi=cdi->next)
3364 pos += sprintf(info+pos, "\t%d", CDROM_CAN(CDC_DVD_R) != 0);
3366 pos += sprintf(info+pos, "\nCan write DVD-RAM:");
3367 for (cdi=topCdromPtr;cdi!=NULL;cdi=cdi->next)
3368 pos += sprintf(info+pos, "\t%d", CDROM_CAN(CDC_DVD_RAM) != 0);
3370 pos += sprintf(info+pos, "\nCan read MRW:\t");
3371 for (cdi=topCdromPtr;cdi!=NULL;cdi=cdi->next)
3372 pos += sprintf(info+pos, "\t%d", CDROM_CAN(CDC_MRW) != 0);
3374 pos += sprintf(info+pos, "\nCan write MRW:\t");
3375 for (cdi=topCdromPtr;cdi!=NULL;cdi=cdi->next)
3376 pos += sprintf(info+pos, "\t%d", CDROM_CAN(CDC_MRW_W) != 0);
3378 pos += sprintf(info+pos, "\nCan write RAM:\t");
3379 for (cdi=topCdromPtr;cdi!=NULL;cdi=cdi->next)
3380 pos += sprintf(info+pos, "\t%d", CDROM_CAN(CDC_RAM) != 0);
3382 strcpy(info+pos,"\n\n");
3384 return proc_dostring(ctl, write, filp, buffer, lenp, ppos);
3387 /* Unfortunately, per device settings are not implemented through
3388 procfs/sysctl yet. When they are, this will naturally disappear. For now
3389 just update all drives. Later this will become the template on which
3390 new registered drives will be based. */
3391 static void cdrom_update_settings(void)
3393 struct cdrom_device_info *cdi;
3395 for (cdi = topCdromPtr; cdi != NULL; cdi = cdi->next) {
3396 if (autoclose && CDROM_CAN(CDC_CLOSE_TRAY))
3397 cdi->options |= CDO_AUTO_CLOSE;
3398 else if (!autoclose)
3399 cdi->options &= ~CDO_AUTO_CLOSE;
3400 if (autoeject && CDROM_CAN(CDC_OPEN_TRAY))
3401 cdi->options |= CDO_AUTO_EJECT;
3402 else if (!autoeject)
3403 cdi->options &= ~CDO_AUTO_EJECT;
3404 if (lockdoor && CDROM_CAN(CDC_LOCK))
3405 cdi->options |= CDO_LOCK;
3407 cdi->options &= ~CDO_LOCK;
3408 if (check_media_type)
3409 cdi->options |= CDO_CHECK_TYPE;
3411 cdi->options &= ~CDO_CHECK_TYPE;
3415 static int cdrom_sysctl_handler(ctl_table *ctl, int write, struct file * filp,
3416 void __user *buffer, size_t *lenp, loff_t *ppos)
3418 int *valp = ctl->data;
3422 ret = proc_dointvec(ctl, write, filp, buffer, lenp, ppos);
3424 if (write && *valp != val) {
3426 /* we only care for 1 or 0. */
3432 switch (ctl->ctl_name) {
3433 case DEV_CDROM_AUTOCLOSE: {
3434 if (valp == &cdrom_sysctl_settings.autoclose)
3435 autoclose = cdrom_sysctl_settings.autoclose;
3438 case DEV_CDROM_AUTOEJECT: {
3439 if (valp == &cdrom_sysctl_settings.autoeject)
3440 autoeject = cdrom_sysctl_settings.autoeject;
3443 case DEV_CDROM_DEBUG: {
3444 if (valp == &cdrom_sysctl_settings.debug)
3445 debug = cdrom_sysctl_settings.debug;
3448 case DEV_CDROM_LOCK: {
3449 if (valp == &cdrom_sysctl_settings.lock)
3450 lockdoor = cdrom_sysctl_settings.lock;
3453 case DEV_CDROM_CHECK_MEDIA: {
3454 if (valp == &cdrom_sysctl_settings.check)
3455 check_media_type = cdrom_sysctl_settings.check;
3459 /* update the option flags according to the changes. we
3460 don't have per device options through sysctl yet,
3461 but we will have and then this will disappear. */
3462 cdrom_update_settings();
3468 /* Place files in /proc/sys/dev/cdrom */
3469 static ctl_table cdrom_table[] = {
3471 .ctl_name = DEV_CDROM_INFO,
3473 .data = &cdrom_sysctl_settings.info,
3474 .maxlen = CDROM_STR_SIZE,
3476 .proc_handler = &cdrom_sysctl_info,
3479 .ctl_name = DEV_CDROM_AUTOCLOSE,
3480 .procname = "autoclose",
3481 .data = &cdrom_sysctl_settings.autoclose,
3482 .maxlen = sizeof(int),
3484 .proc_handler = &cdrom_sysctl_handler,
3487 .ctl_name = DEV_CDROM_AUTOEJECT,
3488 .procname = "autoeject",
3489 .data = &cdrom_sysctl_settings.autoeject,
3490 .maxlen = sizeof(int),
3492 .proc_handler = &cdrom_sysctl_handler,
3495 .ctl_name = DEV_CDROM_DEBUG,
3496 .procname = "debug",
3497 .data = &cdrom_sysctl_settings.debug,
3498 .maxlen = sizeof(int),
3500 .proc_handler = &cdrom_sysctl_handler,
3503 .ctl_name = DEV_CDROM_LOCK,
3505 .data = &cdrom_sysctl_settings.lock,
3506 .maxlen = sizeof(int),
3508 .proc_handler = &cdrom_sysctl_handler,
3511 .ctl_name = DEV_CDROM_CHECK_MEDIA,
3512 .procname = "check_media",
3513 .data = &cdrom_sysctl_settings.check,
3514 .maxlen = sizeof(int),
3516 .proc_handler = &cdrom_sysctl_handler
3521 static ctl_table cdrom_cdrom_table[] = {
3523 .ctl_name = DEV_CDROM,
3524 .procname = "cdrom",
3527 .child = cdrom_table,
3532 /* Make sure that /proc/sys/dev is there */
3533 static ctl_table cdrom_root_table[] = {
3535 .ctl_name = CTL_DEV,
3539 .child = cdrom_cdrom_table,
3543 static struct ctl_table_header *cdrom_sysctl_header;
3545 static void cdrom_sysctl_register(void)
3547 static int initialized;
3549 if (initialized == 1)
3552 cdrom_sysctl_header = register_sysctl_table(cdrom_root_table, 1);
3553 if (cdrom_root_table->ctl_name && cdrom_root_table->child->de)
3554 cdrom_root_table->child->de->owner = THIS_MODULE;
3556 /* set the defaults */
3557 cdrom_sysctl_settings.autoclose = autoclose;
3558 cdrom_sysctl_settings.autoeject = autoeject;
3559 cdrom_sysctl_settings.debug = debug;
3560 cdrom_sysctl_settings.lock = lockdoor;
3561 cdrom_sysctl_settings.check = check_media_type;
3566 static void cdrom_sysctl_unregister(void)
3568 if (cdrom_sysctl_header)
3569 unregister_sysctl_table(cdrom_sysctl_header);
3572 #endif /* CONFIG_SYSCTL */
3574 static int __init cdrom_init(void)
3576 #ifdef CONFIG_SYSCTL
3577 cdrom_sysctl_register();
3582 static void __exit cdrom_exit(void)
3584 printk(KERN_INFO "Uniform CD-ROM driver unloaded\n");
3585 #ifdef CONFIG_SYSCTL
3586 cdrom_sysctl_unregister();
3590 module_init(cdrom_init);
3591 module_exit(cdrom_exit);
3592 MODULE_LICENSE("GPL");
projects / linux-2.6 / blob