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 actively
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 pr_fmt(fmt) KBUILD_MODNAME ": " fmt
247 #define REVISION "Revision: 3.20"
248 #define VERSION "Id: cdrom.c 3.20 2003/12/17"
250 /* I use an error-log mask to give fine grain control over the type of
251 messages dumped to the system logs. The available masks include: */
252 #define CD_NOTHING 0x0
253 #define CD_WARNING 0x1
254 #define CD_REG_UNREG 0x2
255 #define CD_DO_IOCTL 0x4
257 #define CD_CLOSE 0x10
258 #define CD_COUNT_TRACKS 0x20
259 #define CD_CHANGER 0x40
262 /* Define this to remove _all_ the debugging messages */
263 /* #define ERRLOGMASK CD_NOTHING */
264 #define ERRLOGMASK CD_WARNING
265 /* #define ERRLOGMASK (CD_WARNING|CD_OPEN|CD_COUNT_TRACKS|CD_CLOSE) */
266 /* #define ERRLOGMASK (CD_WARNING|CD_REG_UNREG|CD_DO_IOCTL|CD_OPEN|CD_CLOSE|CD_COUNT_TRACKS) */
268 #include <linux/module.h>
269 #include <linux/fs.h>
270 #include <linux/buffer_head.h>
271 #include <linux/major.h>
272 #include <linux/types.h>
273 #include <linux/errno.h>
274 #include <linux/kernel.h>
275 #include <linux/mm.h>
276 #include <linux/slab.h>
277 #include <linux/cdrom.h>
278 #include <linux/sysctl.h>
279 #include <linux/proc_fs.h>
280 #include <linux/blkpg.h>
281 #include <linux/init.h>
282 #include <linux/fcntl.h>
283 #include <linux/blkdev.h>
284 #include <linux/times.h>
286 #include <asm/uaccess.h>
288 /* used to tell the module to turn on full debugging messages */
290 /* used to keep tray locked at all times */
291 static int keeplocked;
292 /* default compatibility mode */
293 static int autoclose=1;
294 static int autoeject;
295 static int lockdoor = 1;
296 /* will we ever get to use this... sigh. */
297 static int check_media_type;
298 /* automatically restart mrw format */
299 static int mrw_format_restart = 1;
300 module_param(debug, bool, 0);
301 module_param(autoclose, bool, 0);
302 module_param(autoeject, bool, 0);
303 module_param(lockdoor, bool, 0);
304 module_param(check_media_type, bool, 0);
305 module_param(mrw_format_restart, bool, 0);
307 static DEFINE_MUTEX(cdrom_mutex);
309 static const char *mrw_format_status[] = {
316 static const char *mrw_address_space[] = { "DMA", "GAA" };
318 #if (ERRLOGMASK!=CD_NOTHING)
319 #define cdinfo(type, fmt, args...) \
321 if ((ERRLOGMASK & type) || debug == 1) \
322 pr_info(fmt, ##args); \
325 #define cdinfo(type, fmt, args...) \
327 if (0 && (ERRLOGMASK & type) || debug == 1) \
328 pr_info(fmt, ##args); \
332 /* These are used to simplify getting data in from and back to user land */
333 #define IOCTL_IN(arg, type, in) \
334 if (copy_from_user(&(in), (type __user *) (arg), sizeof (in))) \
337 #define IOCTL_OUT(arg, type, out) \
338 if (copy_to_user((type __user *) (arg), &(out), sizeof (out))) \
341 /* The (cdo->capability & ~cdi->mask & CDC_XXX) construct was used in
342 a lot of places. This macro makes the code more clear. */
343 #define CDROM_CAN(type) (cdi->ops->capability & ~cdi->mask & (type))
345 /* used in the audio ioctls */
346 #define CHECKAUDIO if ((ret=check_for_audio_disc(cdi, cdo))) return ret
349 * Another popular OS uses 7 seconds as the hard timeout for default
350 * commands, so it is a good choice for us as well.
352 #define CDROM_DEF_TIMEOUT (7 * HZ)
354 /* Not-exported routines. */
355 static int open_for_data(struct cdrom_device_info * cdi);
356 static int check_for_audio_disc(struct cdrom_device_info * cdi,
357 struct cdrom_device_ops * cdo);
358 static void sanitize_format(union cdrom_addr *addr,
359 u_char * curr, u_char requested);
360 static int mmc_ioctl(struct cdrom_device_info *cdi, unsigned int cmd,
363 int cdrom_get_last_written(struct cdrom_device_info *, long *);
364 static int cdrom_get_next_writable(struct cdrom_device_info *, long *);
365 static void cdrom_count_tracks(struct cdrom_device_info *, tracktype*);
367 static int cdrom_mrw_exit(struct cdrom_device_info *cdi);
369 static int cdrom_get_disc_info(struct cdrom_device_info *cdi, disc_information *di);
371 static void cdrom_sysctl_register(void);
373 static LIST_HEAD(cdrom_list);
375 static int cdrom_dummy_generic_packet(struct cdrom_device_info *cdi,
376 struct packet_command *cgc)
379 cgc->sense->sense_key = 0x05;
380 cgc->sense->asc = 0x20;
381 cgc->sense->ascq = 0x00;
388 /* This macro makes sure we don't have to check on cdrom_device_ops
389 * existence in the run-time routines below. Change_capability is a
390 * hack to have the capability flags defined const, while we can still
391 * change it here without gcc complaining at every line.
393 #define ENSURE(call, bits) if (cdo->call == NULL) *change_capability &= ~(bits)
395 int register_cdrom(struct cdrom_device_info *cdi)
397 static char banner_printed;
398 struct cdrom_device_ops *cdo = cdi->ops;
399 int *change_capability = (int *)&cdo->capability; /* hack */
401 cdinfo(CD_OPEN, "entering register_cdrom\n");
403 if (cdo->open == NULL || cdo->release == NULL)
405 if (!banner_printed) {
406 pr_info("Uniform CD-ROM driver " REVISION "\n");
408 cdrom_sysctl_register();
411 ENSURE(drive_status, CDC_DRIVE_STATUS );
412 if (cdo->check_events == NULL && cdo->media_changed == NULL)
413 *change_capability = ~(CDC_MEDIA_CHANGED | CDC_SELECT_DISC);
414 ENSURE(tray_move, CDC_CLOSE_TRAY | CDC_OPEN_TRAY);
415 ENSURE(lock_door, CDC_LOCK);
416 ENSURE(select_speed, CDC_SELECT_SPEED);
417 ENSURE(get_last_session, CDC_MULTI_SESSION);
418 ENSURE(get_mcn, CDC_MCN);
419 ENSURE(reset, CDC_RESET);
420 ENSURE(generic_packet, CDC_GENERIC_PACKET);
423 cdi->options = CDO_USE_FFLAGS;
425 if (autoclose==1 && CDROM_CAN(CDC_CLOSE_TRAY))
426 cdi->options |= (int) CDO_AUTO_CLOSE;
427 if (autoeject==1 && CDROM_CAN(CDC_OPEN_TRAY))
428 cdi->options |= (int) CDO_AUTO_EJECT;
430 cdi->options |= (int) CDO_LOCK;
431 if (check_media_type==1)
432 cdi->options |= (int) CDO_CHECK_TYPE;
434 if (CDROM_CAN(CDC_MRW_W))
435 cdi->exit = cdrom_mrw_exit;
438 cdi->cdda_method = CDDA_BPC_FULL;
440 cdi->cdda_method = CDDA_OLD;
442 if (!cdo->generic_packet)
443 cdo->generic_packet = cdrom_dummy_generic_packet;
445 cdinfo(CD_REG_UNREG, "drive \"/dev/%s\" registered\n", cdi->name);
446 mutex_lock(&cdrom_mutex);
447 list_add(&cdi->list, &cdrom_list);
448 mutex_unlock(&cdrom_mutex);
453 void unregister_cdrom(struct cdrom_device_info *cdi)
455 cdinfo(CD_OPEN, "entering unregister_cdrom\n");
457 mutex_lock(&cdrom_mutex);
458 list_del(&cdi->list);
459 mutex_unlock(&cdrom_mutex);
464 cdi->ops->n_minors--;
465 cdinfo(CD_REG_UNREG, "drive \"/dev/%s\" unregistered\n", cdi->name);
468 int cdrom_get_media_event(struct cdrom_device_info *cdi,
469 struct media_event_desc *med)
471 struct packet_command cgc;
472 unsigned char buffer[8];
473 struct event_header *eh = (struct event_header *) buffer;
475 init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_READ);
476 cgc.cmd[0] = GPCMD_GET_EVENT_STATUS_NOTIFICATION;
477 cgc.cmd[1] = 1; /* IMMED */
478 cgc.cmd[4] = 1 << 4; /* media event */
479 cgc.cmd[8] = sizeof(buffer);
482 if (cdi->ops->generic_packet(cdi, &cgc))
485 if (be16_to_cpu(eh->data_len) < sizeof(*med))
488 if (eh->nea || eh->notification_class != 0x4)
491 memcpy(med, &buffer[sizeof(*eh)], sizeof(*med));
496 * the first prototypes used 0x2c as the page code for the mrw mode page,
497 * subsequently this was changed to 0x03. probe the one used by this drive
499 static int cdrom_mrw_probe_pc(struct cdrom_device_info *cdi)
501 struct packet_command cgc;
504 init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_READ);
509 if (!cdrom_mode_sense(cdi, &cgc, MRW_MODE_PC, 0)) {
510 cdi->mrw_mode_page = MRW_MODE_PC;
512 } else if (!cdrom_mode_sense(cdi, &cgc, MRW_MODE_PC_PRE1, 0)) {
513 cdi->mrw_mode_page = MRW_MODE_PC_PRE1;
520 static int cdrom_is_mrw(struct cdrom_device_info *cdi, int *write)
522 struct packet_command cgc;
523 struct mrw_feature_desc *mfd;
524 unsigned char buffer[16];
529 init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_READ);
531 cgc.cmd[0] = GPCMD_GET_CONFIGURATION;
532 cgc.cmd[3] = CDF_MRW;
533 cgc.cmd[8] = sizeof(buffer);
536 if ((ret = cdi->ops->generic_packet(cdi, &cgc)))
539 mfd = (struct mrw_feature_desc *)&buffer[sizeof(struct feature_header)];
540 if (be16_to_cpu(mfd->feature_code) != CDF_MRW)
544 if ((ret = cdrom_mrw_probe_pc(cdi))) {
552 static int cdrom_mrw_bgformat(struct cdrom_device_info *cdi, int cont)
554 struct packet_command cgc;
555 unsigned char buffer[12];
558 pr_info("%sstarting format\n", cont ? "Re" : "");
561 * FmtData bit set (bit 4), format type is 1
563 init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_WRITE);
564 cgc.cmd[0] = GPCMD_FORMAT_UNIT;
565 cgc.cmd[1] = (1 << 4) | 1;
567 cgc.timeout = 5 * 60 * HZ;
570 * 4 byte format list header, 8 byte format list descriptor
583 buffer[8] = 0x24 << 2;
586 ret = cdi->ops->generic_packet(cdi, &cgc);
588 pr_info("bgformat failed\n");
593 static int cdrom_mrw_bgformat_susp(struct cdrom_device_info *cdi, int immed)
595 struct packet_command cgc;
597 init_cdrom_command(&cgc, NULL, 0, CGC_DATA_NONE);
598 cgc.cmd[0] = GPCMD_CLOSE_TRACK;
601 * Session = 1, Track = 0
603 cgc.cmd[1] = !!immed;
606 cgc.timeout = 5 * 60 * HZ;
608 return cdi->ops->generic_packet(cdi, &cgc);
611 static int cdrom_flush_cache(struct cdrom_device_info *cdi)
613 struct packet_command cgc;
615 init_cdrom_command(&cgc, NULL, 0, CGC_DATA_NONE);
616 cgc.cmd[0] = GPCMD_FLUSH_CACHE;
618 cgc.timeout = 5 * 60 * HZ;
620 return cdi->ops->generic_packet(cdi, &cgc);
623 static int cdrom_mrw_exit(struct cdrom_device_info *cdi)
628 ret = cdrom_get_disc_info(cdi, &di);
629 if (ret < 0 || ret < (int)offsetof(typeof(di),disc_type))
633 if (di.mrw_status == CDM_MRW_BGFORMAT_ACTIVE) {
634 pr_info("issuing MRW background format suspend\n");
635 ret = cdrom_mrw_bgformat_susp(cdi, 0);
638 if (!ret && cdi->media_written)
639 ret = cdrom_flush_cache(cdi);
644 static int cdrom_mrw_set_lba_space(struct cdrom_device_info *cdi, int space)
646 struct packet_command cgc;
647 struct mode_page_header *mph;
649 int ret, offset, size;
651 init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_READ);
654 cgc.buflen = sizeof(buffer);
656 if ((ret = cdrom_mode_sense(cdi, &cgc, cdi->mrw_mode_page, 0)))
659 mph = (struct mode_page_header *) buffer;
660 offset = be16_to_cpu(mph->desc_length);
661 size = be16_to_cpu(mph->mode_data_length) + 2;
663 buffer[offset + 3] = space;
666 if ((ret = cdrom_mode_select(cdi, &cgc)))
669 pr_info("%s: mrw address space %s selected\n",
670 cdi->name, mrw_address_space[space]);
674 static int cdrom_get_random_writable(struct cdrom_device_info *cdi,
675 struct rwrt_feature_desc *rfd)
677 struct packet_command cgc;
681 init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_READ);
683 cgc.cmd[0] = GPCMD_GET_CONFIGURATION; /* often 0x46 */
684 cgc.cmd[3] = CDF_RWRT; /* often 0x0020 */
685 cgc.cmd[8] = sizeof(buffer); /* often 0x18 */
688 if ((ret = cdi->ops->generic_packet(cdi, &cgc)))
691 memcpy(rfd, &buffer[sizeof(struct feature_header)], sizeof (*rfd));
695 static int cdrom_has_defect_mgt(struct cdrom_device_info *cdi)
697 struct packet_command cgc;
699 __be16 *feature_code;
702 init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_READ);
704 cgc.cmd[0] = GPCMD_GET_CONFIGURATION;
705 cgc.cmd[3] = CDF_HWDM;
706 cgc.cmd[8] = sizeof(buffer);
709 if ((ret = cdi->ops->generic_packet(cdi, &cgc)))
712 feature_code = (__be16 *) &buffer[sizeof(struct feature_header)];
713 if (be16_to_cpu(*feature_code) == CDF_HWDM)
720 static int cdrom_is_random_writable(struct cdrom_device_info *cdi, int *write)
722 struct rwrt_feature_desc rfd;
727 if ((ret = cdrom_get_random_writable(cdi, &rfd)))
730 if (CDF_RWRT == be16_to_cpu(rfd.feature_code))
736 static int cdrom_media_erasable(struct cdrom_device_info *cdi)
741 ret = cdrom_get_disc_info(cdi, &di);
742 if (ret < 0 || ret < offsetof(typeof(di), n_first_track))
749 * FIXME: check RO bit
751 static int cdrom_dvdram_open_write(struct cdrom_device_info *cdi)
753 int ret = cdrom_media_erasable(cdi);
756 * allow writable open if media info read worked and media is
757 * erasable, _or_ if it fails since not all drives support it
765 static int cdrom_mrw_open_write(struct cdrom_device_info *cdi)
771 * always reset to DMA lba space on open
773 if (cdrom_mrw_set_lba_space(cdi, MRW_LBA_DMA)) {
774 pr_err("failed setting lba address space\n");
778 ret = cdrom_get_disc_info(cdi, &di);
779 if (ret < 0 || ret < offsetof(typeof(di),disc_type))
787 * 0 - not MRW formatted
788 * 1 - MRW bgformat started, but not running or complete
789 * 2 - MRW bgformat in progress
790 * 3 - MRW formatting complete
793 pr_info("open: mrw_status '%s'\n", mrw_format_status[di.mrw_status]);
796 else if (di.mrw_status == CDM_MRW_BGFORMAT_INACTIVE &&
798 ret = cdrom_mrw_bgformat(cdi, 1);
803 static int mo_open_write(struct cdrom_device_info *cdi)
805 struct packet_command cgc;
809 init_cdrom_command(&cgc, &buffer, 4, CGC_DATA_READ);
813 * obtain write protect information as per
814 * drivers/scsi/sd.c:sd_read_write_protect_flag
817 ret = cdrom_mode_sense(cdi, &cgc, GPMODE_ALL_PAGES, 0);
819 ret = cdrom_mode_sense(cdi, &cgc, GPMODE_VENDOR_PAGE, 0);
822 ret = cdrom_mode_sense(cdi, &cgc, GPMODE_ALL_PAGES, 0);
825 /* drive gave us no info, let the user go ahead */
829 return buffer[3] & 0x80;
832 static int cdrom_ram_open_write(struct cdrom_device_info *cdi)
834 struct rwrt_feature_desc rfd;
837 if ((ret = cdrom_has_defect_mgt(cdi)))
840 if ((ret = cdrom_get_random_writable(cdi, &rfd)))
842 else if (CDF_RWRT == be16_to_cpu(rfd.feature_code))
845 cdinfo(CD_OPEN, "can open for random write\n");
849 static void cdrom_mmc3_profile(struct cdrom_device_info *cdi)
851 struct packet_command cgc;
853 int ret, mmc3_profile;
855 init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_READ);
857 cgc.cmd[0] = GPCMD_GET_CONFIGURATION;
859 cgc.cmd[2] = cgc.cmd[3] = 0; /* Starting Feature Number */
860 cgc.cmd[8] = sizeof(buffer); /* Allocation Length */
863 if ((ret = cdi->ops->generic_packet(cdi, &cgc)))
864 mmc3_profile = 0xffff;
866 mmc3_profile = (buffer[6] << 8) | buffer[7];
868 cdi->mmc3_profile = mmc3_profile;
871 static int cdrom_is_dvd_rw(struct cdrom_device_info *cdi)
873 switch (cdi->mmc3_profile) {
874 case 0x12: /* DVD-RAM */
875 case 0x1A: /* DVD+RW */
876 case 0x43: /* BD-RE */
884 * returns 0 for ok to open write, non-0 to disallow
886 static int cdrom_open_write(struct cdrom_device_info *cdi)
888 int mrw, mrw_write, ram_write;
892 if (!cdrom_is_mrw(cdi, &mrw_write))
895 if (CDROM_CAN(CDC_MO_DRIVE))
898 (void) cdrom_is_random_writable(cdi, &ram_write);
901 cdi->mask &= ~CDC_MRW;
903 cdi->mask |= CDC_MRW;
906 cdi->mask &= ~CDC_MRW_W;
908 cdi->mask |= CDC_MRW_W;
911 cdi->mask &= ~CDC_RAM;
913 cdi->mask |= CDC_RAM;
915 if (CDROM_CAN(CDC_MRW_W))
916 ret = cdrom_mrw_open_write(cdi);
917 else if (CDROM_CAN(CDC_DVD_RAM))
918 ret = cdrom_dvdram_open_write(cdi);
919 else if (CDROM_CAN(CDC_RAM) &&
920 !CDROM_CAN(CDC_CD_R|CDC_CD_RW|CDC_DVD|CDC_DVD_R|CDC_MRW|CDC_MO_DRIVE))
921 ret = cdrom_ram_open_write(cdi);
922 else if (CDROM_CAN(CDC_MO_DRIVE))
923 ret = mo_open_write(cdi);
924 else if (!cdrom_is_dvd_rw(cdi))
930 static void cdrom_dvd_rw_close_write(struct cdrom_device_info *cdi)
932 struct packet_command cgc;
934 if (cdi->mmc3_profile != 0x1a) {
935 cdinfo(CD_CLOSE, "%s: No DVD+RW\n", cdi->name);
939 if (!cdi->media_written) {
940 cdinfo(CD_CLOSE, "%s: DVD+RW media clean\n", cdi->name);
944 pr_info("%s: dirty DVD+RW media, \"finalizing\"\n", cdi->name);
946 init_cdrom_command(&cgc, NULL, 0, CGC_DATA_NONE);
947 cgc.cmd[0] = GPCMD_FLUSH_CACHE;
949 cdi->ops->generic_packet(cdi, &cgc);
951 init_cdrom_command(&cgc, NULL, 0, CGC_DATA_NONE);
952 cgc.cmd[0] = GPCMD_CLOSE_TRACK;
953 cgc.timeout = 3000*HZ;
955 cdi->ops->generic_packet(cdi, &cgc);
957 init_cdrom_command(&cgc, NULL, 0, CGC_DATA_NONE);
958 cgc.cmd[0] = GPCMD_CLOSE_TRACK;
959 cgc.cmd[2] = 2; /* Close session */
961 cgc.timeout = 3000*HZ;
962 cdi->ops->generic_packet(cdi, &cgc);
964 cdi->media_written = 0;
967 static int cdrom_close_write(struct cdrom_device_info *cdi)
970 return cdrom_flush_cache(cdi);
976 /* We use the open-option O_NONBLOCK to indicate that the
977 * purpose of opening is only for subsequent ioctl() calls; no device
978 * integrity checks are performed.
980 * We hope that all cd-player programs will adopt this convention. It
981 * is in their own interest: device control becomes a lot easier
984 int cdrom_open(struct cdrom_device_info *cdi, struct block_device *bdev, fmode_t mode)
988 cdinfo(CD_OPEN, "entering cdrom_open\n");
990 /* open is event synchronization point, check events first */
991 check_disk_change(bdev);
993 /* if this was a O_NONBLOCK open and we should honor the flags,
994 * do a quick open without drive/disc integrity checks. */
996 if ((mode & FMODE_NDELAY) && (cdi->options & CDO_USE_FFLAGS)) {
997 ret = cdi->ops->open(cdi, 1);
999 ret = open_for_data(cdi);
1002 cdrom_mmc3_profile(cdi);
1003 if (mode & FMODE_WRITE) {
1005 if (cdrom_open_write(cdi))
1007 if (!CDROM_CAN(CDC_RAM))
1010 cdi->media_written = 0;
1017 cdinfo(CD_OPEN, "Use count for \"/dev/%s\" now %d\n",
1018 cdi->name, cdi->use_count);
1021 if (CDROM_CAN(CDC_LOCK) && cdi->options & CDO_LOCK) {
1022 cdi->ops->lock_door(cdi, 0);
1023 cdinfo(CD_OPEN, "door unlocked.\n");
1025 cdi->ops->release(cdi);
1032 int open_for_data(struct cdrom_device_info * cdi)
1035 struct cdrom_device_ops *cdo = cdi->ops;
1037 cdinfo(CD_OPEN, "entering open_for_data\n");
1038 /* Check if the driver can report drive status. If it can, we
1039 can do clever things. If it can't, well, we at least tried! */
1040 if (cdo->drive_status != NULL) {
1041 ret = cdo->drive_status(cdi, CDSL_CURRENT);
1042 cdinfo(CD_OPEN, "drive_status=%d\n", ret);
1043 if (ret == CDS_TRAY_OPEN) {
1044 cdinfo(CD_OPEN, "the tray is open...\n");
1045 /* can/may i close it? */
1046 if (CDROM_CAN(CDC_CLOSE_TRAY) &&
1047 cdi->options & CDO_AUTO_CLOSE) {
1048 cdinfo(CD_OPEN, "trying to close the tray.\n");
1049 ret=cdo->tray_move(cdi,0);
1051 cdinfo(CD_OPEN, "bummer. tried to close the tray but failed.\n");
1052 /* Ignore the error from the low
1053 level driver. We don't care why it
1054 couldn't close the tray. We only care
1055 that there is no disc in the drive,
1056 since that is the _REAL_ problem here.*/
1058 goto clean_up_and_return;
1061 cdinfo(CD_OPEN, "bummer. this drive can't close the tray.\n");
1063 goto clean_up_and_return;
1065 /* Ok, the door should be closed now.. Check again */
1066 ret = cdo->drive_status(cdi, CDSL_CURRENT);
1067 if ((ret == CDS_NO_DISC) || (ret==CDS_TRAY_OPEN)) {
1068 cdinfo(CD_OPEN, "bummer. the tray is still not closed.\n");
1069 cdinfo(CD_OPEN, "tray might not contain a medium.\n");
1071 goto clean_up_and_return;
1073 cdinfo(CD_OPEN, "the tray is now closed.\n");
1075 /* the door should be closed now, check for the disc */
1076 ret = cdo->drive_status(cdi, CDSL_CURRENT);
1077 if (ret!=CDS_DISC_OK) {
1079 goto clean_up_and_return;
1082 cdrom_count_tracks(cdi, &tracks);
1083 if (tracks.error == CDS_NO_DISC) {
1084 cdinfo(CD_OPEN, "bummer. no disc.\n");
1086 goto clean_up_and_return;
1088 /* CD-Players which don't use O_NONBLOCK, workman
1089 * for example, need bit CDO_CHECK_TYPE cleared! */
1090 if (tracks.data==0) {
1091 if (cdi->options & CDO_CHECK_TYPE) {
1092 /* give people a warning shot, now that CDO_CHECK_TYPE
1093 is the default case! */
1094 cdinfo(CD_OPEN, "bummer. wrong media type.\n");
1095 cdinfo(CD_WARNING, "pid %d must open device O_NONBLOCK!\n",
1096 (unsigned int)task_pid_nr(current));
1098 goto clean_up_and_return;
1101 cdinfo(CD_OPEN, "wrong media type, but CDO_CHECK_TYPE not set.\n");
1105 cdinfo(CD_OPEN, "all seems well, opening the device.\n");
1107 /* all seems well, we can open the device */
1108 ret = cdo->open(cdi, 0); /* open for data */
1109 cdinfo(CD_OPEN, "opening the device gave me %d.\n", ret);
1110 /* After all this careful checking, we shouldn't have problems
1111 opening the device, but we don't want the device locked if
1112 this somehow fails... */
1114 cdinfo(CD_OPEN, "open device failed.\n");
1115 goto clean_up_and_return;
1117 if (CDROM_CAN(CDC_LOCK) && (cdi->options & CDO_LOCK)) {
1118 cdo->lock_door(cdi, 1);
1119 cdinfo(CD_OPEN, "door locked.\n");
1121 cdinfo(CD_OPEN, "device opened successfully.\n");
1124 /* Something failed. Try to unlock the drive, because some drivers
1125 (notably ide-cd) lock the drive after every command. This produced
1126 a nasty bug where after mount failed, the drive would remain locked!
1127 This ensures that the drive gets unlocked after a mount fails. This
1128 is a goto to avoid bloating the driver with redundant code. */
1129 clean_up_and_return:
1130 cdinfo(CD_OPEN, "open failed.\n");
1131 if (CDROM_CAN(CDC_LOCK) && cdi->options & CDO_LOCK) {
1132 cdo->lock_door(cdi, 0);
1133 cdinfo(CD_OPEN, "door unlocked.\n");
1138 /* This code is similar to that in open_for_data. The routine is called
1139 whenever an audio play operation is requested.
1141 static int check_for_audio_disc(struct cdrom_device_info * cdi,
1142 struct cdrom_device_ops * cdo)
1146 cdinfo(CD_OPEN, "entering check_for_audio_disc\n");
1147 if (!(cdi->options & CDO_CHECK_TYPE))
1149 if (cdo->drive_status != NULL) {
1150 ret = cdo->drive_status(cdi, CDSL_CURRENT);
1151 cdinfo(CD_OPEN, "drive_status=%d\n", ret);
1152 if (ret == CDS_TRAY_OPEN) {
1153 cdinfo(CD_OPEN, "the tray is open...\n");
1154 /* can/may i close it? */
1155 if (CDROM_CAN(CDC_CLOSE_TRAY) &&
1156 cdi->options & CDO_AUTO_CLOSE) {
1157 cdinfo(CD_OPEN, "trying to close the tray.\n");
1158 ret=cdo->tray_move(cdi,0);
1160 cdinfo(CD_OPEN, "bummer. tried to close tray but failed.\n");
1161 /* Ignore the error from the low
1162 level driver. We don't care why it
1163 couldn't close the tray. We only care
1164 that there is no disc in the drive,
1165 since that is the _REAL_ problem here.*/
1169 cdinfo(CD_OPEN, "bummer. this driver can't close the tray.\n");
1172 /* Ok, the door should be closed now.. Check again */
1173 ret = cdo->drive_status(cdi, CDSL_CURRENT);
1174 if ((ret == CDS_NO_DISC) || (ret==CDS_TRAY_OPEN)) {
1175 cdinfo(CD_OPEN, "bummer. the tray is still not closed.\n");
1178 if (ret!=CDS_DISC_OK) {
1179 cdinfo(CD_OPEN, "bummer. disc isn't ready.\n");
1182 cdinfo(CD_OPEN, "the tray is now closed.\n");
1185 cdrom_count_tracks(cdi, &tracks);
1187 return(tracks.error);
1189 if (tracks.audio==0)
1190 return -EMEDIUMTYPE;
1195 void cdrom_release(struct cdrom_device_info *cdi, fmode_t mode)
1197 struct cdrom_device_ops *cdo = cdi->ops;
1198 int opened_for_data;
1200 cdinfo(CD_CLOSE, "entering cdrom_release\n");
1202 if (cdi->use_count > 0)
1205 if (cdi->use_count == 0) {
1206 cdinfo(CD_CLOSE, "Use count for \"/dev/%s\" now zero\n", cdi->name);
1207 cdrom_dvd_rw_close_write(cdi);
1209 if ((cdo->capability & CDC_LOCK) && !keeplocked) {
1210 cdinfo(CD_CLOSE, "Unlocking door!\n");
1211 cdo->lock_door(cdi, 0);
1215 opened_for_data = !(cdi->options & CDO_USE_FFLAGS) ||
1216 !(mode & FMODE_NDELAY);
1219 * flush cache on last write release
1221 if (CDROM_CAN(CDC_RAM) && !cdi->use_count && cdi->for_data)
1222 cdrom_close_write(cdi);
1225 if (cdi->use_count == 0) { /* last process that closes dev*/
1226 if (opened_for_data &&
1227 cdi->options & CDO_AUTO_EJECT && CDROM_CAN(CDC_OPEN_TRAY))
1228 cdo->tray_move(cdi, 1);
1232 static int cdrom_read_mech_status(struct cdrom_device_info *cdi,
1233 struct cdrom_changer_info *buf)
1235 struct packet_command cgc;
1236 struct cdrom_device_ops *cdo = cdi->ops;
1240 * Sanyo changer isn't spec compliant (doesn't use regular change
1241 * LOAD_UNLOAD command, and it doesn't implement the mech status
1244 if (cdi->sanyo_slot) {
1245 buf->hdr.nslots = 3;
1246 buf->hdr.curslot = cdi->sanyo_slot == 3 ? 0 : cdi->sanyo_slot;
1247 for (length = 0; length < 3; length++) {
1248 buf->slots[length].disc_present = 1;
1249 buf->slots[length].change = 0;
1254 length = sizeof(struct cdrom_mechstat_header) +
1255 cdi->capacity * sizeof(struct cdrom_slot);
1257 init_cdrom_command(&cgc, buf, length, CGC_DATA_READ);
1258 cgc.cmd[0] = GPCMD_MECHANISM_STATUS;
1259 cgc.cmd[8] = (length >> 8) & 0xff;
1260 cgc.cmd[9] = length & 0xff;
1261 return cdo->generic_packet(cdi, &cgc);
1264 static int cdrom_slot_status(struct cdrom_device_info *cdi, int slot)
1266 struct cdrom_changer_info *info;
1269 cdinfo(CD_CHANGER, "entering cdrom_slot_status()\n");
1270 if (cdi->sanyo_slot)
1273 info = kmalloc(sizeof(*info), GFP_KERNEL);
1277 if ((ret = cdrom_read_mech_status(cdi, info)))
1280 if (info->slots[slot].disc_present)
1290 /* Return the number of slots for an ATAPI/SCSI cdrom,
1291 * return 1 if not a changer.
1293 int cdrom_number_of_slots(struct cdrom_device_info *cdi)
1297 struct cdrom_changer_info *info;
1299 cdinfo(CD_CHANGER, "entering cdrom_number_of_slots()\n");
1300 /* cdrom_read_mech_status requires a valid value for capacity: */
1303 info = kmalloc(sizeof(*info), GFP_KERNEL);
1307 if ((status = cdrom_read_mech_status(cdi, info)) == 0)
1308 nslots = info->hdr.nslots;
1315 /* If SLOT < 0, unload the current slot. Otherwise, try to load SLOT. */
1316 static int cdrom_load_unload(struct cdrom_device_info *cdi, int slot)
1318 struct packet_command cgc;
1320 cdinfo(CD_CHANGER, "entering cdrom_load_unload()\n");
1321 if (cdi->sanyo_slot && slot < 0)
1324 init_cdrom_command(&cgc, NULL, 0, CGC_DATA_NONE);
1325 cgc.cmd[0] = GPCMD_LOAD_UNLOAD;
1326 cgc.cmd[4] = 2 + (slot >= 0);
1328 cgc.timeout = 60 * HZ;
1330 /* The Sanyo 3 CD changer uses byte 7 of the
1331 GPCMD_TEST_UNIT_READY to command to switch CDs instead of
1332 using the GPCMD_LOAD_UNLOAD opcode. */
1333 if (cdi->sanyo_slot && -1 < slot) {
1334 cgc.cmd[0] = GPCMD_TEST_UNIT_READY;
1336 cgc.cmd[4] = cgc.cmd[8] = 0;
1337 cdi->sanyo_slot = slot ? slot : 3;
1340 return cdi->ops->generic_packet(cdi, &cgc);
1343 static int cdrom_select_disc(struct cdrom_device_info *cdi, int slot)
1345 struct cdrom_changer_info *info;
1349 cdinfo(CD_CHANGER, "entering cdrom_select_disc()\n");
1350 if (!CDROM_CAN(CDC_SELECT_DISC))
1351 return -EDRIVE_CANT_DO_THIS;
1353 if (cdi->ops->check_events)
1354 cdi->ops->check_events(cdi, 0, slot);
1356 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)))
1401 * As cdrom implements an extra ioctl consumer for media changed
1402 * event, it needs to buffer ->check_events() output, such that event
1403 * is not lost for both the usual VFS and ioctl paths.
1404 * cdi->{vfs|ioctl}_events are used to buffer pending events for each
1407 * XXX: Locking is non-existent. cdi->ops->check_events() can be
1408 * called in parallel and buffering fields are accessed without any
1409 * exclusion. The original media_changed code had the same problem.
1410 * It might be better to simply deprecate CDROM_MEDIA_CHANGED ioctl
1411 * and remove this cruft altogether. It doesn't have much usefulness
1414 static void cdrom_update_events(struct cdrom_device_info *cdi,
1415 unsigned int clearing)
1417 unsigned int events;
1419 events = cdi->ops->check_events(cdi, clearing, CDSL_CURRENT);
1420 cdi->vfs_events |= events;
1421 cdi->ioctl_events |= events;
1424 unsigned int cdrom_check_events(struct cdrom_device_info *cdi,
1425 unsigned int clearing)
1427 unsigned int events;
1429 cdrom_update_events(cdi, clearing);
1430 events = cdi->vfs_events;
1431 cdi->vfs_events = 0;
1434 EXPORT_SYMBOL(cdrom_check_events);
1436 /* We want to make media_changed accessible to the user through an
1437 * ioctl. The main problem now is that we must double-buffer the
1438 * low-level implementation, to assure that the VFS and the user both
1439 * see a medium change once.
1443 int media_changed(struct cdrom_device_info *cdi, int queue)
1445 unsigned int mask = (1 << (queue & 1));
1446 int ret = !!(cdi->mc_flags & mask);
1449 if (!CDROM_CAN(CDC_MEDIA_CHANGED))
1452 /* changed since last call? */
1453 if (cdi->ops->check_events) {
1454 BUG_ON(!queue); /* shouldn't be called from VFS path */
1455 cdrom_update_events(cdi, DISK_EVENT_MEDIA_CHANGE);
1456 changed = cdi->ioctl_events & DISK_EVENT_MEDIA_CHANGE;
1457 cdi->ioctl_events = 0;
1459 changed = cdi->ops->media_changed(cdi, CDSL_CURRENT);
1462 cdi->mc_flags = 0x3; /* set bit on both queues */
1464 cdi->media_written = 0;
1467 cdi->mc_flags &= ~mask; /* clear bit */
1471 int cdrom_media_changed(struct cdrom_device_info *cdi)
1473 /* This talks to the VFS, which doesn't like errors - just 1 or 0.
1474 * Returning "0" is always safe (media hasn't been changed). Do that
1475 * if the low-level cdrom driver dosn't support media changed. */
1476 if (cdi == NULL || cdi->ops->media_changed == NULL)
1478 if (!CDROM_CAN(CDC_MEDIA_CHANGED))
1480 return media_changed(cdi, 0);
1483 /* badly broken, I know. Is due for a fixup anytime. */
1484 static void cdrom_count_tracks(struct cdrom_device_info *cdi, tracktype* tracks)
1486 struct cdrom_tochdr header;
1487 struct cdrom_tocentry entry;
1494 cdinfo(CD_COUNT_TRACKS, "entering cdrom_count_tracks\n");
1495 /* Grab the TOC header so we can see how many tracks there are */
1496 if ((ret = cdi->ops->audio_ioctl(cdi, CDROMREADTOCHDR, &header))) {
1497 if (ret == -ENOMEDIUM)
1498 tracks->error = CDS_NO_DISC;
1500 tracks->error = CDS_NO_INFO;
1503 /* check what type of tracks are on this disc */
1504 entry.cdte_format = CDROM_MSF;
1505 for (i = header.cdth_trk0; i <= header.cdth_trk1; i++) {
1506 entry.cdte_track = i;
1507 if (cdi->ops->audio_ioctl(cdi, CDROMREADTOCENTRY, &entry)) {
1508 tracks->error=CDS_NO_INFO;
1511 if (entry.cdte_ctrl & CDROM_DATA_TRACK) {
1512 if (entry.cdte_format == 0x10)
1514 else if (entry.cdte_format == 0x20)
1520 cdinfo(CD_COUNT_TRACKS, "track %d: format=%d, ctrl=%d\n",
1521 i, entry.cdte_format, entry.cdte_ctrl);
1523 cdinfo(CD_COUNT_TRACKS, "disc has %d tracks: %d=audio %d=data %d=Cd-I %d=XA\n",
1524 header.cdth_trk1, tracks->audio, tracks->data,
1525 tracks->cdi, tracks->xa);
1528 /* Requests to the low-level drivers will /always/ be done in the
1529 following format convention:
1531 CDROM_LBA: all data-related requests.
1532 CDROM_MSF: all audio-related requests.
1534 However, a low-level implementation is allowed to refuse this
1535 request, and return information in its own favorite format.
1537 It doesn't make sense /at all/ to ask for a play_audio in LBA
1538 format, or ask for multi-session info in MSF format. However, for
1539 backward compatibility these format requests will be satisfied, but
1540 the requests to the low-level drivers will be sanitized in the more
1541 meaningful format indicated above.
1545 void sanitize_format(union cdrom_addr *addr,
1546 u_char * curr, u_char requested)
1548 if (*curr == requested)
1549 return; /* nothing to be done! */
1550 if (requested == CDROM_LBA) {
1551 addr->lba = (int) addr->msf.frame +
1552 75 * (addr->msf.second - 2 + 60 * addr->msf.minute);
1553 } else { /* CDROM_MSF */
1554 int lba = addr->lba;
1555 addr->msf.frame = lba % 75;
1558 addr->msf.second = lba % 60;
1559 addr->msf.minute = lba / 60;
1564 void init_cdrom_command(struct packet_command *cgc, void *buf, int len,
1567 memset(cgc, 0, sizeof(struct packet_command));
1569 memset(buf, 0, len);
1570 cgc->buffer = (char *) buf;
1572 cgc->data_direction = type;
1573 cgc->timeout = CDROM_DEF_TIMEOUT;
1578 #define copy_key(dest,src) memcpy((dest), (src), sizeof(dvd_key))
1579 #define copy_chal(dest,src) memcpy((dest), (src), sizeof(dvd_challenge))
1581 static void setup_report_key(struct packet_command *cgc, unsigned agid, unsigned type)
1583 cgc->cmd[0] = GPCMD_REPORT_KEY;
1584 cgc->cmd[10] = type | (agid << 6);
1586 case 0: case 8: case 5: {
1599 cgc->cmd[9] = cgc->buflen;
1600 cgc->data_direction = CGC_DATA_READ;
1603 static void setup_send_key(struct packet_command *cgc, unsigned agid, unsigned type)
1605 cgc->cmd[0] = GPCMD_SEND_KEY;
1606 cgc->cmd[10] = type | (agid << 6);
1621 cgc->cmd[9] = cgc->buflen;
1622 cgc->data_direction = CGC_DATA_WRITE;
1625 static int dvd_do_auth(struct cdrom_device_info *cdi, dvd_authinfo *ai)
1629 struct packet_command cgc;
1630 struct cdrom_device_ops *cdo = cdi->ops;
1631 rpc_state_t rpc_state;
1633 memset(buf, 0, sizeof(buf));
1634 init_cdrom_command(&cgc, buf, 0, CGC_DATA_READ);
1638 case DVD_LU_SEND_AGID:
1639 cdinfo(CD_DVD, "entering DVD_LU_SEND_AGID\n");
1641 setup_report_key(&cgc, ai->lsa.agid, 0);
1643 if ((ret = cdo->generic_packet(cdi, &cgc)))
1646 ai->lsa.agid = buf[7] >> 6;
1647 /* Returning data, let host change state */
1650 case DVD_LU_SEND_KEY1:
1651 cdinfo(CD_DVD, "entering DVD_LU_SEND_KEY1\n");
1652 setup_report_key(&cgc, ai->lsk.agid, 2);
1654 if ((ret = cdo->generic_packet(cdi, &cgc)))
1657 copy_key(ai->lsk.key, &buf[4]);
1658 /* Returning data, let host change state */
1661 case DVD_LU_SEND_CHALLENGE:
1662 cdinfo(CD_DVD, "entering DVD_LU_SEND_CHALLENGE\n");
1663 setup_report_key(&cgc, ai->lsc.agid, 1);
1665 if ((ret = cdo->generic_packet(cdi, &cgc)))
1668 copy_chal(ai->lsc.chal, &buf[4]);
1669 /* Returning data, let host change state */
1673 case DVD_LU_SEND_TITLE_KEY:
1674 cdinfo(CD_DVD, "entering DVD_LU_SEND_TITLE_KEY\n");
1676 setup_report_key(&cgc, ai->lstk.agid, 4);
1677 cgc.cmd[5] = ai->lstk.lba;
1678 cgc.cmd[4] = ai->lstk.lba >> 8;
1679 cgc.cmd[3] = ai->lstk.lba >> 16;
1680 cgc.cmd[2] = ai->lstk.lba >> 24;
1682 if ((ret = cdo->generic_packet(cdi, &cgc)))
1685 ai->lstk.cpm = (buf[4] >> 7) & 1;
1686 ai->lstk.cp_sec = (buf[4] >> 6) & 1;
1687 ai->lstk.cgms = (buf[4] >> 4) & 3;
1688 copy_key(ai->lstk.title_key, &buf[5]);
1689 /* Returning data, let host change state */
1692 case DVD_LU_SEND_ASF:
1693 cdinfo(CD_DVD, "entering DVD_LU_SEND_ASF\n");
1694 setup_report_key(&cgc, ai->lsasf.agid, 5);
1696 if ((ret = cdo->generic_packet(cdi, &cgc)))
1699 ai->lsasf.asf = buf[7] & 1;
1702 /* LU data receive (LU changes state) */
1703 case DVD_HOST_SEND_CHALLENGE:
1704 cdinfo(CD_DVD, "entering DVD_HOST_SEND_CHALLENGE\n");
1705 setup_send_key(&cgc, ai->hsc.agid, 1);
1707 copy_chal(&buf[4], ai->hsc.chal);
1709 if ((ret = cdo->generic_packet(cdi, &cgc)))
1712 ai->type = DVD_LU_SEND_KEY1;
1715 case DVD_HOST_SEND_KEY2:
1716 cdinfo(CD_DVD, "entering DVD_HOST_SEND_KEY2\n");
1717 setup_send_key(&cgc, ai->hsk.agid, 3);
1719 copy_key(&buf[4], ai->hsk.key);
1721 if ((ret = cdo->generic_packet(cdi, &cgc))) {
1722 ai->type = DVD_AUTH_FAILURE;
1725 ai->type = DVD_AUTH_ESTABLISHED;
1729 case DVD_INVALIDATE_AGID:
1731 cdinfo(CD_DVD, "entering DVD_INVALIDATE_AGID\n");
1732 setup_report_key(&cgc, ai->lsa.agid, 0x3f);
1733 if ((ret = cdo->generic_packet(cdi, &cgc)))
1737 /* Get region settings */
1738 case DVD_LU_SEND_RPC_STATE:
1739 cdinfo(CD_DVD, "entering DVD_LU_SEND_RPC_STATE\n");
1740 setup_report_key(&cgc, 0, 8);
1741 memset(&rpc_state, 0, sizeof(rpc_state_t));
1742 cgc.buffer = (char *) &rpc_state;
1744 if ((ret = cdo->generic_packet(cdi, &cgc)))
1747 ai->lrpcs.type = rpc_state.type_code;
1748 ai->lrpcs.vra = rpc_state.vra;
1749 ai->lrpcs.ucca = rpc_state.ucca;
1750 ai->lrpcs.region_mask = rpc_state.region_mask;
1751 ai->lrpcs.rpc_scheme = rpc_state.rpc_scheme;
1754 /* Set region settings */
1755 case DVD_HOST_SEND_RPC_STATE:
1756 cdinfo(CD_DVD, "entering DVD_HOST_SEND_RPC_STATE\n");
1757 setup_send_key(&cgc, 0, 6);
1759 buf[4] = ai->hrpcs.pdrc;
1761 if ((ret = cdo->generic_packet(cdi, &cgc)))
1766 cdinfo(CD_WARNING, "Invalid DVD key ioctl (%d)\n", ai->type);
1773 static int dvd_read_physical(struct cdrom_device_info *cdi, dvd_struct *s,
1774 struct packet_command *cgc)
1776 unsigned char buf[21], *base;
1777 struct dvd_layer *layer;
1778 struct cdrom_device_ops *cdo = cdi->ops;
1779 int ret, layer_num = s->physical.layer_num;
1781 if (layer_num >= DVD_LAYERS)
1784 init_cdrom_command(cgc, buf, sizeof(buf), CGC_DATA_READ);
1785 cgc->cmd[0] = GPCMD_READ_DVD_STRUCTURE;
1786 cgc->cmd[6] = layer_num;
1787 cgc->cmd[7] = s->type;
1788 cgc->cmd[9] = cgc->buflen & 0xff;
1791 * refrain from reporting errors on non-existing layers (mainly)
1795 ret = cdo->generic_packet(cdi, cgc);
1800 layer = &s->physical.layer[layer_num];
1803 * place the data... really ugly, but at least we won't have to
1804 * worry about endianess in userspace.
1806 memset(layer, 0, sizeof(*layer));
1807 layer->book_version = base[0] & 0xf;
1808 layer->book_type = base[0] >> 4;
1809 layer->min_rate = base[1] & 0xf;
1810 layer->disc_size = base[1] >> 4;
1811 layer->layer_type = base[2] & 0xf;
1812 layer->track_path = (base[2] >> 4) & 1;
1813 layer->nlayers = (base[2] >> 5) & 3;
1814 layer->track_density = base[3] & 0xf;
1815 layer->linear_density = base[3] >> 4;
1816 layer->start_sector = base[5] << 16 | base[6] << 8 | base[7];
1817 layer->end_sector = base[9] << 16 | base[10] << 8 | base[11];
1818 layer->end_sector_l0 = base[13] << 16 | base[14] << 8 | base[15];
1819 layer->bca = base[16] >> 7;
1824 static int dvd_read_copyright(struct cdrom_device_info *cdi, dvd_struct *s,
1825 struct packet_command *cgc)
1829 struct cdrom_device_ops *cdo = cdi->ops;
1831 init_cdrom_command(cgc, buf, sizeof(buf), CGC_DATA_READ);
1832 cgc->cmd[0] = GPCMD_READ_DVD_STRUCTURE;
1833 cgc->cmd[6] = s->copyright.layer_num;
1834 cgc->cmd[7] = s->type;
1835 cgc->cmd[8] = cgc->buflen >> 8;
1836 cgc->cmd[9] = cgc->buflen & 0xff;
1838 ret = cdo->generic_packet(cdi, cgc);
1842 s->copyright.cpst = buf[4];
1843 s->copyright.rmi = buf[5];
1848 static int dvd_read_disckey(struct cdrom_device_info *cdi, dvd_struct *s,
1849 struct packet_command *cgc)
1853 struct cdrom_device_ops *cdo = cdi->ops;
1855 size = sizeof(s->disckey.value) + 4;
1857 buf = kmalloc(size, GFP_KERNEL);
1861 init_cdrom_command(cgc, buf, size, CGC_DATA_READ);
1862 cgc->cmd[0] = GPCMD_READ_DVD_STRUCTURE;
1863 cgc->cmd[7] = s->type;
1864 cgc->cmd[8] = size >> 8;
1865 cgc->cmd[9] = size & 0xff;
1866 cgc->cmd[10] = s->disckey.agid << 6;
1868 ret = cdo->generic_packet(cdi, cgc);
1870 memcpy(s->disckey.value, &buf[4], sizeof(s->disckey.value));
1876 static int dvd_read_bca(struct cdrom_device_info *cdi, dvd_struct *s,
1877 struct packet_command *cgc)
1879 int ret, size = 4 + 188;
1881 struct cdrom_device_ops *cdo = cdi->ops;
1883 buf = kmalloc(size, GFP_KERNEL);
1887 init_cdrom_command(cgc, buf, size, CGC_DATA_READ);
1888 cgc->cmd[0] = GPCMD_READ_DVD_STRUCTURE;
1889 cgc->cmd[7] = s->type;
1890 cgc->cmd[9] = cgc->buflen & 0xff;
1892 ret = cdo->generic_packet(cdi, cgc);
1896 s->bca.len = buf[0] << 8 | buf[1];
1897 if (s->bca.len < 12 || s->bca.len > 188) {
1898 cdinfo(CD_WARNING, "Received invalid BCA length (%d)\n", s->bca.len);
1902 memcpy(s->bca.value, &buf[4], s->bca.len);
1909 static int dvd_read_manufact(struct cdrom_device_info *cdi, dvd_struct *s,
1910 struct packet_command *cgc)
1914 struct cdrom_device_ops *cdo = cdi->ops;
1916 size = sizeof(s->manufact.value) + 4;
1918 buf = kmalloc(size, GFP_KERNEL);
1922 init_cdrom_command(cgc, buf, size, CGC_DATA_READ);
1923 cgc->cmd[0] = GPCMD_READ_DVD_STRUCTURE;
1924 cgc->cmd[7] = s->type;
1925 cgc->cmd[8] = size >> 8;
1926 cgc->cmd[9] = size & 0xff;
1928 ret = cdo->generic_packet(cdi, cgc);
1932 s->manufact.len = buf[0] << 8 | buf[1];
1933 if (s->manufact.len < 0) {
1934 cdinfo(CD_WARNING, "Received invalid manufacture info length"
1935 " (%d)\n", s->manufact.len);
1938 if (s->manufact.len > 2048) {
1939 cdinfo(CD_WARNING, "Received invalid manufacture info "
1940 "length (%d): truncating to 2048\n",
1942 s->manufact.len = 2048;
1944 memcpy(s->manufact.value, &buf[4], s->manufact.len);
1952 static int dvd_read_struct(struct cdrom_device_info *cdi, dvd_struct *s,
1953 struct packet_command *cgc)
1956 case DVD_STRUCT_PHYSICAL:
1957 return dvd_read_physical(cdi, s, cgc);
1959 case DVD_STRUCT_COPYRIGHT:
1960 return dvd_read_copyright(cdi, s, cgc);
1962 case DVD_STRUCT_DISCKEY:
1963 return dvd_read_disckey(cdi, s, cgc);
1965 case DVD_STRUCT_BCA:
1966 return dvd_read_bca(cdi, s, cgc);
1968 case DVD_STRUCT_MANUFACT:
1969 return dvd_read_manufact(cdi, s, cgc);
1972 cdinfo(CD_WARNING, ": Invalid DVD structure read requested (%d)\n",
1978 int cdrom_mode_sense(struct cdrom_device_info *cdi,
1979 struct packet_command *cgc,
1980 int page_code, int page_control)
1982 struct cdrom_device_ops *cdo = cdi->ops;
1984 memset(cgc->cmd, 0, sizeof(cgc->cmd));
1986 cgc->cmd[0] = GPCMD_MODE_SENSE_10;
1987 cgc->cmd[2] = page_code | (page_control << 6);
1988 cgc->cmd[7] = cgc->buflen >> 8;
1989 cgc->cmd[8] = cgc->buflen & 0xff;
1990 cgc->data_direction = CGC_DATA_READ;
1991 return cdo->generic_packet(cdi, cgc);
1994 int cdrom_mode_select(struct cdrom_device_info *cdi,
1995 struct packet_command *cgc)
1997 struct cdrom_device_ops *cdo = cdi->ops;
1999 memset(cgc->cmd, 0, sizeof(cgc->cmd));
2000 memset(cgc->buffer, 0, 2);
2001 cgc->cmd[0] = GPCMD_MODE_SELECT_10;
2002 cgc->cmd[1] = 0x10; /* PF */
2003 cgc->cmd[7] = cgc->buflen >> 8;
2004 cgc->cmd[8] = cgc->buflen & 0xff;
2005 cgc->data_direction = CGC_DATA_WRITE;
2006 return cdo->generic_packet(cdi, cgc);
2009 static int cdrom_read_subchannel(struct cdrom_device_info *cdi,
2010 struct cdrom_subchnl *subchnl, int mcn)
2012 struct cdrom_device_ops *cdo = cdi->ops;
2013 struct packet_command cgc;
2017 init_cdrom_command(&cgc, buffer, 16, CGC_DATA_READ);
2018 cgc.cmd[0] = GPCMD_READ_SUBCHANNEL;
2019 cgc.cmd[1] = 2; /* MSF addressing */
2020 cgc.cmd[2] = 0x40; /* request subQ data */
2021 cgc.cmd[3] = mcn ? 2 : 1;
2024 if ((ret = cdo->generic_packet(cdi, &cgc)))
2027 subchnl->cdsc_audiostatus = cgc.buffer[1];
2028 subchnl->cdsc_format = CDROM_MSF;
2029 subchnl->cdsc_ctrl = cgc.buffer[5] & 0xf;
2030 subchnl->cdsc_trk = cgc.buffer[6];
2031 subchnl->cdsc_ind = cgc.buffer[7];
2033 subchnl->cdsc_reladdr.msf.minute = cgc.buffer[13];
2034 subchnl->cdsc_reladdr.msf.second = cgc.buffer[14];
2035 subchnl->cdsc_reladdr.msf.frame = cgc.buffer[15];
2036 subchnl->cdsc_absaddr.msf.minute = cgc.buffer[9];
2037 subchnl->cdsc_absaddr.msf.second = cgc.buffer[10];
2038 subchnl->cdsc_absaddr.msf.frame = cgc.buffer[11];
2044 * Specific READ_10 interface
2046 static int cdrom_read_cd(struct cdrom_device_info *cdi,
2047 struct packet_command *cgc, int lba,
2048 int blocksize, int nblocks)
2050 struct cdrom_device_ops *cdo = cdi->ops;
2052 memset(&cgc->cmd, 0, sizeof(cgc->cmd));
2053 cgc->cmd[0] = GPCMD_READ_10;
2054 cgc->cmd[2] = (lba >> 24) & 0xff;
2055 cgc->cmd[3] = (lba >> 16) & 0xff;
2056 cgc->cmd[4] = (lba >> 8) & 0xff;
2057 cgc->cmd[5] = lba & 0xff;
2058 cgc->cmd[6] = (nblocks >> 16) & 0xff;
2059 cgc->cmd[7] = (nblocks >> 8) & 0xff;
2060 cgc->cmd[8] = nblocks & 0xff;
2061 cgc->buflen = blocksize * nblocks;
2062 return cdo->generic_packet(cdi, cgc);
2065 /* very generic interface for reading the various types of blocks */
2066 static int cdrom_read_block(struct cdrom_device_info *cdi,
2067 struct packet_command *cgc,
2068 int lba, int nblocks, int format, int blksize)
2070 struct cdrom_device_ops *cdo = cdi->ops;
2072 memset(&cgc->cmd, 0, sizeof(cgc->cmd));
2073 cgc->cmd[0] = GPCMD_READ_CD;
2074 /* expected sector size - cdda,mode1,etc. */
2075 cgc->cmd[1] = format << 2;
2076 /* starting address */
2077 cgc->cmd[2] = (lba >> 24) & 0xff;
2078 cgc->cmd[3] = (lba >> 16) & 0xff;
2079 cgc->cmd[4] = (lba >> 8) & 0xff;
2080 cgc->cmd[5] = lba & 0xff;
2081 /* number of blocks */
2082 cgc->cmd[6] = (nblocks >> 16) & 0xff;
2083 cgc->cmd[7] = (nblocks >> 8) & 0xff;
2084 cgc->cmd[8] = nblocks & 0xff;
2085 cgc->buflen = blksize * nblocks;
2087 /* set the header info returned */
2089 case CD_FRAMESIZE_RAW0 : cgc->cmd[9] = 0x58; break;
2090 case CD_FRAMESIZE_RAW1 : cgc->cmd[9] = 0x78; break;
2091 case CD_FRAMESIZE_RAW : cgc->cmd[9] = 0xf8; break;
2092 default : cgc->cmd[9] = 0x10;
2095 return cdo->generic_packet(cdi, cgc);
2098 static int cdrom_read_cdda_old(struct cdrom_device_info *cdi, __u8 __user *ubuf,
2099 int lba, int nframes)
2101 struct packet_command cgc;
2105 cdi->last_sense = 0;
2107 memset(&cgc, 0, sizeof(cgc));
2110 * start with will ra.nframes size, back down if alloc fails
2114 cgc.buffer = kmalloc(CD_FRAMESIZE_RAW * nr, GFP_KERNEL);
2124 cgc.data_direction = CGC_DATA_READ;
2125 while (nframes > 0) {
2129 ret = cdrom_read_block(cdi, &cgc, lba, nr, 1, CD_FRAMESIZE_RAW);
2132 if (copy_to_user(ubuf, cgc.buffer, CD_FRAMESIZE_RAW * nr)) {
2136 ubuf += CD_FRAMESIZE_RAW * nr;
2144 static int cdrom_read_cdda_bpc(struct cdrom_device_info *cdi, __u8 __user *ubuf,
2145 int lba, int nframes)
2147 struct request_queue *q = cdi->disk->queue;
2156 cdi->last_sense = 0;
2160 if (cdi->cdda_method == CDDA_BPC_SINGLE)
2162 if (nr * CD_FRAMESIZE_RAW > (queue_max_sectors(q) << 9))
2163 nr = (queue_max_sectors(q) << 9) / CD_FRAMESIZE_RAW;
2165 len = nr * CD_FRAMESIZE_RAW;
2167 rq = blk_get_request(q, READ, GFP_KERNEL);
2173 ret = blk_rq_map_user(q, rq, NULL, ubuf, len, GFP_KERNEL);
2175 blk_put_request(rq);
2179 rq->cmd[0] = GPCMD_READ_CD;
2180 rq->cmd[1] = 1 << 2;
2181 rq->cmd[2] = (lba >> 24) & 0xff;
2182 rq->cmd[3] = (lba >> 16) & 0xff;
2183 rq->cmd[4] = (lba >> 8) & 0xff;
2184 rq->cmd[5] = lba & 0xff;
2185 rq->cmd[6] = (nr >> 16) & 0xff;
2186 rq->cmd[7] = (nr >> 8) & 0xff;
2187 rq->cmd[8] = nr & 0xff;
2191 rq->cmd_type = REQ_TYPE_BLOCK_PC;
2192 rq->timeout = 60 * HZ;
2195 if (blk_execute_rq(q, cdi->disk, rq, 0)) {
2196 struct request_sense *s = rq->sense;
2198 cdi->last_sense = s->sense_key;
2201 if (blk_rq_unmap_user(bio))
2203 blk_put_request(rq);
2216 static int cdrom_read_cdda(struct cdrom_device_info *cdi, __u8 __user *ubuf,
2217 int lba, int nframes)
2221 if (cdi->cdda_method == CDDA_OLD)
2222 return cdrom_read_cdda_old(cdi, ubuf, lba, nframes);
2226 * for anything else than success and io error, we need to retry
2228 ret = cdrom_read_cdda_bpc(cdi, ubuf, lba, nframes);
2229 if (!ret || ret != -EIO)
2233 * I've seen drives get sense 4/8/3 udma crc errors on multi
2234 * frame dma, so drop to single frame dma if we need to
2236 if (cdi->cdda_method == CDDA_BPC_FULL && nframes > 1) {
2237 pr_info("dropping to single frame dma\n");
2238 cdi->cdda_method = CDDA_BPC_SINGLE;
2243 * so we have an io error of some sort with multi frame dma. if the
2244 * condition wasn't a hardware error
2245 * problems, not for any error
2247 if (cdi->last_sense != 0x04 && cdi->last_sense != 0x0b)
2250 pr_info("dropping to old style cdda (sense=%x)\n", cdi->last_sense);
2251 cdi->cdda_method = CDDA_OLD;
2252 return cdrom_read_cdda_old(cdi, ubuf, lba, nframes);
2255 static int cdrom_ioctl_multisession(struct cdrom_device_info *cdi,
2258 struct cdrom_multisession ms_info;
2259 u8 requested_format;
2262 cdinfo(CD_DO_IOCTL, "entering CDROMMULTISESSION\n");
2264 if (!(cdi->ops->capability & CDC_MULTI_SESSION))
2267 if (copy_from_user(&ms_info, argp, sizeof(ms_info)))
2270 requested_format = ms_info.addr_format;
2271 if (requested_format != CDROM_MSF && requested_format != CDROM_LBA)
2273 ms_info.addr_format = CDROM_LBA;
2275 ret = cdi->ops->get_last_session(cdi, &ms_info);
2279 sanitize_format(&ms_info.addr, &ms_info.addr_format, requested_format);
2281 if (copy_to_user(argp, &ms_info, sizeof(ms_info)))
2284 cdinfo(CD_DO_IOCTL, "CDROMMULTISESSION successful\n");
2288 static int cdrom_ioctl_eject(struct cdrom_device_info *cdi)
2290 cdinfo(CD_DO_IOCTL, "entering CDROMEJECT\n");
2292 if (!CDROM_CAN(CDC_OPEN_TRAY))
2294 if (cdi->use_count != 1 || keeplocked)
2296 if (CDROM_CAN(CDC_LOCK)) {
2297 int ret = cdi->ops->lock_door(cdi, 0);
2302 return cdi->ops->tray_move(cdi, 1);
2305 static int cdrom_ioctl_closetray(struct cdrom_device_info *cdi)
2307 cdinfo(CD_DO_IOCTL, "entering CDROMCLOSETRAY\n");
2309 if (!CDROM_CAN(CDC_CLOSE_TRAY))
2311 return cdi->ops->tray_move(cdi, 0);
2314 static int cdrom_ioctl_eject_sw(struct cdrom_device_info *cdi,
2317 cdinfo(CD_DO_IOCTL, "entering CDROMEJECT_SW\n");
2319 if (!CDROM_CAN(CDC_OPEN_TRAY))
2324 cdi->options &= ~(CDO_AUTO_CLOSE | CDO_AUTO_EJECT);
2326 cdi->options |= CDO_AUTO_CLOSE | CDO_AUTO_EJECT;
2330 static int cdrom_ioctl_media_changed(struct cdrom_device_info *cdi,
2333 struct cdrom_changer_info *info;
2336 cdinfo(CD_DO_IOCTL, "entering CDROM_MEDIA_CHANGED\n");
2338 if (!CDROM_CAN(CDC_MEDIA_CHANGED))
2341 /* cannot select disc or select current disc */
2342 if (!CDROM_CAN(CDC_SELECT_DISC) || arg == CDSL_CURRENT)
2343 return media_changed(cdi, 1);
2345 if (arg >= cdi->capacity)
2348 info = kmalloc(sizeof(*info), GFP_KERNEL);
2352 ret = cdrom_read_mech_status(cdi, info);
2354 ret = info->slots[arg].change;
2359 static int cdrom_ioctl_set_options(struct cdrom_device_info *cdi,
2362 cdinfo(CD_DO_IOCTL, "entering CDROM_SET_OPTIONS\n");
2365 * Options need to be in sync with capability.
2366 * Too late for that, so we have to check each one separately.
2369 case CDO_USE_FFLAGS:
2370 case CDO_CHECK_TYPE:
2373 if (!CDROM_CAN(CDC_LOCK))
2377 return cdi->options;
2378 /* default is basically CDO_[AUTO_CLOSE|AUTO_EJECT] */
2380 if (!CDROM_CAN(arg))
2383 cdi->options |= (int) arg;
2384 return cdi->options;
2387 static int cdrom_ioctl_clear_options(struct cdrom_device_info *cdi,
2390 cdinfo(CD_DO_IOCTL, "entering CDROM_CLEAR_OPTIONS\n");
2392 cdi->options &= ~(int) arg;
2393 return cdi->options;
2396 static int cdrom_ioctl_select_speed(struct cdrom_device_info *cdi,
2399 cdinfo(CD_DO_IOCTL, "entering CDROM_SELECT_SPEED\n");
2401 if (!CDROM_CAN(CDC_SELECT_SPEED))
2403 return cdi->ops->select_speed(cdi, arg);
2406 static int cdrom_ioctl_select_disc(struct cdrom_device_info *cdi,
2409 cdinfo(CD_DO_IOCTL, "entering CDROM_SELECT_DISC\n");
2411 if (!CDROM_CAN(CDC_SELECT_DISC))
2414 if (arg != CDSL_CURRENT && arg != CDSL_NONE) {
2415 if ((int)arg >= cdi->capacity)
2420 * ->select_disc is a hook to allow a driver-specific way of
2421 * seleting disc. However, since there is no equivalent hook for
2422 * cdrom_slot_status this may not actually be useful...
2424 if (cdi->ops->select_disc)
2425 return cdi->ops->select_disc(cdi, arg);
2427 cdinfo(CD_CHANGER, "Using generic cdrom_select_disc()\n");
2428 return cdrom_select_disc(cdi, arg);
2431 static int cdrom_ioctl_reset(struct cdrom_device_info *cdi,
2432 struct block_device *bdev)
2434 cdinfo(CD_DO_IOCTL, "entering CDROM_RESET\n");
2436 if (!capable(CAP_SYS_ADMIN))
2438 if (!CDROM_CAN(CDC_RESET))
2440 invalidate_bdev(bdev);
2441 return cdi->ops->reset(cdi);
2444 static int cdrom_ioctl_lock_door(struct cdrom_device_info *cdi,
2447 cdinfo(CD_DO_IOCTL, "%socking door.\n", arg ? "L" : "Unl");
2449 if (!CDROM_CAN(CDC_LOCK))
2450 return -EDRIVE_CANT_DO_THIS;
2452 keeplocked = arg ? 1 : 0;
2455 * Don't unlock the door on multiple opens by default, but allow
2458 if (cdi->use_count != 1 && !arg && !capable(CAP_SYS_ADMIN))
2460 return cdi->ops->lock_door(cdi, arg);
2463 static int cdrom_ioctl_debug(struct cdrom_device_info *cdi,
2466 cdinfo(CD_DO_IOCTL, "%sabling debug.\n", arg ? "En" : "Dis");
2468 if (!capable(CAP_SYS_ADMIN))
2470 debug = arg ? 1 : 0;
2474 static int cdrom_ioctl_get_capability(struct cdrom_device_info *cdi)
2476 cdinfo(CD_DO_IOCTL, "entering CDROM_GET_CAPABILITY\n");
2477 return (cdi->ops->capability & ~cdi->mask);
2481 * The following function is implemented, although very few audio
2482 * discs give Universal Product Code information, which should just be
2483 * the Medium Catalog Number on the box. Note, that the way the code
2484 * is written on the CD is /not/ uniform across all discs!
2486 static int cdrom_ioctl_get_mcn(struct cdrom_device_info *cdi,
2489 struct cdrom_mcn mcn;
2492 cdinfo(CD_DO_IOCTL, "entering CDROM_GET_MCN\n");
2494 if (!(cdi->ops->capability & CDC_MCN))
2496 ret = cdi->ops->get_mcn(cdi, &mcn);
2500 if (copy_to_user(argp, &mcn, sizeof(mcn)))
2502 cdinfo(CD_DO_IOCTL, "CDROM_GET_MCN successful\n");
2506 static int cdrom_ioctl_drive_status(struct cdrom_device_info *cdi,
2509 cdinfo(CD_DO_IOCTL, "entering CDROM_DRIVE_STATUS\n");
2511 if (!(cdi->ops->capability & CDC_DRIVE_STATUS))
2513 if (!CDROM_CAN(CDC_SELECT_DISC) ||
2514 (arg == CDSL_CURRENT || arg == CDSL_NONE))
2515 return cdi->ops->drive_status(cdi, CDSL_CURRENT);
2516 if (((int)arg >= cdi->capacity))
2518 return cdrom_slot_status(cdi, arg);
2522 * Ok, this is where problems start. The current interface for the
2523 * CDROM_DISC_STATUS ioctl is flawed. It makes the false assumption that
2524 * CDs are all CDS_DATA_1 or all CDS_AUDIO, etc. Unfortunately, while this
2525 * is often the case, it is also very common for CDs to have some tracks
2526 * with data, and some tracks with audio. Just because I feel like it,
2527 * I declare the following to be the best way to cope. If the CD has ANY
2528 * data tracks on it, it will be returned as a data CD. If it has any XA
2529 * tracks, I will return it as that. Now I could simplify this interface
2530 * by combining these returns with the above, but this more clearly
2531 * demonstrates the problem with the current interface. Too bad this
2532 * wasn't designed to use bitmasks... -Erik
2534 * Well, now we have the option CDS_MIXED: a mixed-type CD.
2535 * User level programmers might feel the ioctl is not very useful.
2538 static int cdrom_ioctl_disc_status(struct cdrom_device_info *cdi)
2542 cdinfo(CD_DO_IOCTL, "entering CDROM_DISC_STATUS\n");
2544 cdrom_count_tracks(cdi, &tracks);
2546 return tracks.error;
2548 /* Policy mode on */
2549 if (tracks.audio > 0) {
2550 if (!tracks.data && !tracks.cdi && !tracks.xa)
2560 if (tracks.data > 0)
2562 /* Policy mode off */
2564 cdinfo(CD_WARNING,"This disc doesn't have any tracks I recognize!\n");
2568 static int cdrom_ioctl_changer_nslots(struct cdrom_device_info *cdi)
2570 cdinfo(CD_DO_IOCTL, "entering CDROM_CHANGER_NSLOTS\n");
2571 return cdi->capacity;
2574 static int cdrom_ioctl_get_subchnl(struct cdrom_device_info *cdi,
2577 struct cdrom_subchnl q;
2581 /* cdinfo(CD_DO_IOCTL,"entering CDROMSUBCHNL\n");*/
2583 if (copy_from_user(&q, argp, sizeof(q)))
2586 requested = q.cdsc_format;
2587 if (requested != CDROM_MSF && requested != CDROM_LBA)
2589 q.cdsc_format = CDROM_MSF;
2591 ret = cdi->ops->audio_ioctl(cdi, CDROMSUBCHNL, &q);
2595 back = q.cdsc_format; /* local copy */
2596 sanitize_format(&q.cdsc_absaddr, &back, requested);
2597 sanitize_format(&q.cdsc_reladdr, &q.cdsc_format, requested);
2599 if (copy_to_user(argp, &q, sizeof(q)))
2601 /* cdinfo(CD_DO_IOCTL, "CDROMSUBCHNL successful\n"); */
2605 static int cdrom_ioctl_read_tochdr(struct cdrom_device_info *cdi,
2608 struct cdrom_tochdr header;
2611 /* cdinfo(CD_DO_IOCTL, "entering CDROMREADTOCHDR\n"); */
2613 if (copy_from_user(&header, argp, sizeof(header)))
2616 ret = cdi->ops->audio_ioctl(cdi, CDROMREADTOCHDR, &header);
2620 if (copy_to_user(argp, &header, sizeof(header)))
2622 /* cdinfo(CD_DO_IOCTL, "CDROMREADTOCHDR successful\n"); */
2626 static int cdrom_ioctl_read_tocentry(struct cdrom_device_info *cdi,
2629 struct cdrom_tocentry entry;
2630 u8 requested_format;
2633 /* cdinfo(CD_DO_IOCTL, "entering CDROMREADTOCENTRY\n"); */
2635 if (copy_from_user(&entry, argp, sizeof(entry)))
2638 requested_format = entry.cdte_format;
2639 if (requested_format != CDROM_MSF && requested_format != CDROM_LBA)
2641 /* make interface to low-level uniform */
2642 entry.cdte_format = CDROM_MSF;
2643 ret = cdi->ops->audio_ioctl(cdi, CDROMREADTOCENTRY, &entry);
2646 sanitize_format(&entry.cdte_addr, &entry.cdte_format, requested_format);
2648 if (copy_to_user(argp, &entry, sizeof(entry)))
2650 /* cdinfo(CD_DO_IOCTL, "CDROMREADTOCENTRY successful\n"); */
2654 static int cdrom_ioctl_play_msf(struct cdrom_device_info *cdi,
2657 struct cdrom_msf msf;
2659 cdinfo(CD_DO_IOCTL, "entering CDROMPLAYMSF\n");
2661 if (!CDROM_CAN(CDC_PLAY_AUDIO))
2663 if (copy_from_user(&msf, argp, sizeof(msf)))
2665 return cdi->ops->audio_ioctl(cdi, CDROMPLAYMSF, &msf);
2668 static int cdrom_ioctl_play_trkind(struct cdrom_device_info *cdi,
2674 cdinfo(CD_DO_IOCTL, "entering CDROMPLAYTRKIND\n");
2676 if (!CDROM_CAN(CDC_PLAY_AUDIO))
2678 if (copy_from_user(&ti, argp, sizeof(ti)))
2681 ret = check_for_audio_disc(cdi, cdi->ops);
2684 return cdi->ops->audio_ioctl(cdi, CDROMPLAYTRKIND, &ti);
2686 static int cdrom_ioctl_volctrl(struct cdrom_device_info *cdi,
2689 struct cdrom_volctrl volume;
2691 cdinfo(CD_DO_IOCTL, "entering CDROMVOLCTRL\n");
2693 if (!CDROM_CAN(CDC_PLAY_AUDIO))
2695 if (copy_from_user(&volume, argp, sizeof(volume)))
2697 return cdi->ops->audio_ioctl(cdi, CDROMVOLCTRL, &volume);
2700 static int cdrom_ioctl_volread(struct cdrom_device_info *cdi,
2703 struct cdrom_volctrl volume;
2706 cdinfo(CD_DO_IOCTL, "entering CDROMVOLREAD\n");
2708 if (!CDROM_CAN(CDC_PLAY_AUDIO))
2711 ret = cdi->ops->audio_ioctl(cdi, CDROMVOLREAD, &volume);
2715 if (copy_to_user(argp, &volume, sizeof(volume)))
2720 static int cdrom_ioctl_audioctl(struct cdrom_device_info *cdi,
2725 cdinfo(CD_DO_IOCTL, "doing audio ioctl (start/stop/pause/resume)\n");
2727 if (!CDROM_CAN(CDC_PLAY_AUDIO))
2729 ret = check_for_audio_disc(cdi, cdi->ops);
2732 return cdi->ops->audio_ioctl(cdi, cmd, NULL);
2736 * Just about every imaginable ioctl is supported in the Uniform layer
2738 * ATAPI / SCSI specific code now mainly resides in mmc_ioctl().
2740 int cdrom_ioctl(struct cdrom_device_info *cdi, struct block_device *bdev,
2741 fmode_t mode, unsigned int cmd, unsigned long arg)
2743 void __user *argp = (void __user *)arg;
2747 * Try the generic SCSI command ioctl's first.
2749 ret = scsi_cmd_blk_ioctl(bdev, mode, cmd, argp);
2754 case CDROMMULTISESSION:
2755 return cdrom_ioctl_multisession(cdi, argp);
2757 return cdrom_ioctl_eject(cdi);
2758 case CDROMCLOSETRAY:
2759 return cdrom_ioctl_closetray(cdi);
2761 return cdrom_ioctl_eject_sw(cdi, arg);
2762 case CDROM_MEDIA_CHANGED:
2763 return cdrom_ioctl_media_changed(cdi, arg);
2764 case CDROM_SET_OPTIONS:
2765 return cdrom_ioctl_set_options(cdi, arg);
2766 case CDROM_CLEAR_OPTIONS:
2767 return cdrom_ioctl_clear_options(cdi, arg);
2768 case CDROM_SELECT_SPEED:
2769 return cdrom_ioctl_select_speed(cdi, arg);
2770 case CDROM_SELECT_DISC:
2771 return cdrom_ioctl_select_disc(cdi, arg);
2773 return cdrom_ioctl_reset(cdi, bdev);
2774 case CDROM_LOCKDOOR:
2775 return cdrom_ioctl_lock_door(cdi, arg);
2777 return cdrom_ioctl_debug(cdi, arg);
2778 case CDROM_GET_CAPABILITY:
2779 return cdrom_ioctl_get_capability(cdi);
2781 return cdrom_ioctl_get_mcn(cdi, argp);
2782 case CDROM_DRIVE_STATUS:
2783 return cdrom_ioctl_drive_status(cdi, arg);
2784 case CDROM_DISC_STATUS:
2785 return cdrom_ioctl_disc_status(cdi);
2786 case CDROM_CHANGER_NSLOTS:
2787 return cdrom_ioctl_changer_nslots(cdi);
2791 * Use the ioctls that are implemented through the generic_packet()
2792 * interface. this may look at bit funny, but if -ENOTTY is
2793 * returned that particular ioctl is not implemented and we
2794 * let it go through the device specific ones.
2796 if (CDROM_CAN(CDC_GENERIC_PACKET)) {
2797 ret = mmc_ioctl(cdi, cmd, arg);
2803 * Note: most of the cdinfo() calls are commented out here,
2804 * because they fill up the sys log when CD players poll
2809 return cdrom_ioctl_get_subchnl(cdi, argp);
2810 case CDROMREADTOCHDR:
2811 return cdrom_ioctl_read_tochdr(cdi, argp);
2812 case CDROMREADTOCENTRY:
2813 return cdrom_ioctl_read_tocentry(cdi, argp);
2815 return cdrom_ioctl_play_msf(cdi, argp);
2816 case CDROMPLAYTRKIND:
2817 return cdrom_ioctl_play_trkind(cdi, argp);
2819 return cdrom_ioctl_volctrl(cdi, argp);
2821 return cdrom_ioctl_volread(cdi, argp);
2826 return cdrom_ioctl_audioctl(cdi, cmd);
2833 * Required when we need to use READ_10 to issue other than 2048 block
2836 static int cdrom_switch_blocksize(struct cdrom_device_info *cdi, int size)
2838 struct cdrom_device_ops *cdo = cdi->ops;
2839 struct packet_command cgc;
2840 struct modesel_head mh;
2842 memset(&mh, 0, sizeof(mh));
2843 mh.block_desc_length = 0x08;
2844 mh.block_length_med = (size >> 8) & 0xff;
2845 mh.block_length_lo = size & 0xff;
2847 memset(&cgc, 0, sizeof(cgc));
2849 cgc.cmd[1] = 1 << 4;
2851 cgc.buflen = sizeof(mh);
2852 cgc.buffer = (char *) &mh;
2853 cgc.data_direction = CGC_DATA_WRITE;
2854 mh.block_desc_length = 0x08;
2855 mh.block_length_med = (size >> 8) & 0xff;
2856 mh.block_length_lo = size & 0xff;
2858 return cdo->generic_packet(cdi, &cgc);
2861 static noinline int mmc_ioctl_cdrom_read_data(struct cdrom_device_info *cdi,
2863 struct packet_command *cgc,
2866 struct request_sense sense;
2867 struct cdrom_msf msf;
2868 int blocksize = 0, format = 0, lba;
2873 blocksize = CD_FRAMESIZE_RAW;
2875 case CDROMREADMODE1:
2876 blocksize = CD_FRAMESIZE;
2879 case CDROMREADMODE2:
2880 blocksize = CD_FRAMESIZE_RAW0;
2883 IOCTL_IN(arg, struct cdrom_msf, msf);
2884 lba = msf_to_lba(msf.cdmsf_min0, msf.cdmsf_sec0, msf.cdmsf_frame0);
2885 /* FIXME: we need upper bound checking, too!! */
2889 cgc->buffer = kzalloc(blocksize, GFP_KERNEL);
2890 if (cgc->buffer == NULL)
2893 memset(&sense, 0, sizeof(sense));
2894 cgc->sense = &sense;
2895 cgc->data_direction = CGC_DATA_READ;
2896 ret = cdrom_read_block(cdi, cgc, lba, 1, format, blocksize);
2897 if (ret && sense.sense_key == 0x05 &&
2898 sense.asc == 0x20 &&
2899 sense.ascq == 0x00) {
2901 * SCSI-II devices are not required to support
2902 * READ_CD, so let's try switching block size
2904 /* FIXME: switch back again... */
2905 ret = cdrom_switch_blocksize(cdi, blocksize);
2909 ret = cdrom_read_cd(cdi, cgc, lba, blocksize, 1);
2910 ret |= cdrom_switch_blocksize(cdi, blocksize);
2912 if (!ret && copy_to_user(arg, cgc->buffer, blocksize))
2919 static noinline int mmc_ioctl_cdrom_read_audio(struct cdrom_device_info *cdi,
2922 struct cdrom_read_audio ra;
2925 IOCTL_IN(arg, struct cdrom_read_audio, ra);
2927 if (ra.addr_format == CDROM_MSF)
2928 lba = msf_to_lba(ra.addr.msf.minute,
2931 else if (ra.addr_format == CDROM_LBA)
2936 /* FIXME: we need upper bound checking, too!! */
2937 if (lba < 0 || ra.nframes <= 0 || ra.nframes > CD_FRAMES)
2940 return cdrom_read_cdda(cdi, ra.buf, lba, ra.nframes);
2943 static noinline int mmc_ioctl_cdrom_subchannel(struct cdrom_device_info *cdi,
2947 struct cdrom_subchnl q;
2948 u_char requested, back;
2949 IOCTL_IN(arg, struct cdrom_subchnl, q);
2950 requested = q.cdsc_format;
2951 if (!((requested == CDROM_MSF) ||
2952 (requested == CDROM_LBA)))
2954 q.cdsc_format = CDROM_MSF;
2955 ret = cdrom_read_subchannel(cdi, &q, 0);
2958 back = q.cdsc_format; /* local copy */
2959 sanitize_format(&q.cdsc_absaddr, &back, requested);
2960 sanitize_format(&q.cdsc_reladdr, &q.cdsc_format, requested);
2961 IOCTL_OUT(arg, struct cdrom_subchnl, q);
2962 /* cdinfo(CD_DO_IOCTL, "CDROMSUBCHNL successful\n"); */
2966 static noinline int mmc_ioctl_cdrom_play_msf(struct cdrom_device_info *cdi,
2968 struct packet_command *cgc)
2970 struct cdrom_device_ops *cdo = cdi->ops;
2971 struct cdrom_msf msf;
2972 cdinfo(CD_DO_IOCTL, "entering CDROMPLAYMSF\n");
2973 IOCTL_IN(arg, struct cdrom_msf, msf);
2974 cgc->cmd[0] = GPCMD_PLAY_AUDIO_MSF;
2975 cgc->cmd[3] = msf.cdmsf_min0;
2976 cgc->cmd[4] = msf.cdmsf_sec0;
2977 cgc->cmd[5] = msf.cdmsf_frame0;
2978 cgc->cmd[6] = msf.cdmsf_min1;
2979 cgc->cmd[7] = msf.cdmsf_sec1;
2980 cgc->cmd[8] = msf.cdmsf_frame1;
2981 cgc->data_direction = CGC_DATA_NONE;
2982 return cdo->generic_packet(cdi, cgc);
2985 static noinline int mmc_ioctl_cdrom_play_blk(struct cdrom_device_info *cdi,
2987 struct packet_command *cgc)
2989 struct cdrom_device_ops *cdo = cdi->ops;
2990 struct cdrom_blk blk;
2991 cdinfo(CD_DO_IOCTL, "entering CDROMPLAYBLK\n");
2992 IOCTL_IN(arg, struct cdrom_blk, blk);
2993 cgc->cmd[0] = GPCMD_PLAY_AUDIO_10;
2994 cgc->cmd[2] = (blk.from >> 24) & 0xff;
2995 cgc->cmd[3] = (blk.from >> 16) & 0xff;
2996 cgc->cmd[4] = (blk.from >> 8) & 0xff;
2997 cgc->cmd[5] = blk.from & 0xff;
2998 cgc->cmd[7] = (blk.len >> 8) & 0xff;
2999 cgc->cmd[8] = blk.len & 0xff;
3000 cgc->data_direction = CGC_DATA_NONE;
3001 return cdo->generic_packet(cdi, cgc);
3004 static noinline int mmc_ioctl_cdrom_volume(struct cdrom_device_info *cdi,
3006 struct packet_command *cgc,
3009 struct cdrom_volctrl volctrl;
3010 unsigned char buffer[32];
3011 char mask[sizeof(buffer)];
3012 unsigned short offset;
3015 cdinfo(CD_DO_IOCTL, "entering CDROMVOLUME\n");
3017 IOCTL_IN(arg, struct cdrom_volctrl, volctrl);
3019 cgc->buffer = buffer;
3021 ret = cdrom_mode_sense(cdi, cgc, GPMODE_AUDIO_CTL_PAGE, 0);
3025 /* originally the code depended on buffer[1] to determine
3026 how much data is available for transfer. buffer[1] is
3027 unfortunately ambigious and the only reliable way seem
3028 to be to simply skip over the block descriptor... */
3029 offset = 8 + be16_to_cpu(*(__be16 *)(buffer + 6));
3031 if (offset + 16 > sizeof(buffer))
3034 if (offset + 16 > cgc->buflen) {
3035 cgc->buflen = offset + 16;
3036 ret = cdrom_mode_sense(cdi, cgc,
3037 GPMODE_AUDIO_CTL_PAGE, 0);
3043 if ((buffer[offset] & 0x3f) != GPMODE_AUDIO_CTL_PAGE ||
3044 buffer[offset + 1] < 14)
3047 /* now we have the current volume settings. if it was only
3048 a CDROMVOLREAD, return these values */
3049 if (cmd == CDROMVOLREAD) {
3050 volctrl.channel0 = buffer[offset+9];
3051 volctrl.channel1 = buffer[offset+11];
3052 volctrl.channel2 = buffer[offset+13];
3053 volctrl.channel3 = buffer[offset+15];
3054 IOCTL_OUT(arg, struct cdrom_volctrl, volctrl);
3058 /* get the volume mask */
3060 ret = cdrom_mode_sense(cdi, cgc, GPMODE_AUDIO_CTL_PAGE, 1);
3064 buffer[offset + 9] = volctrl.channel0 & mask[offset + 9];
3065 buffer[offset + 11] = volctrl.channel1 & mask[offset + 11];
3066 buffer[offset + 13] = volctrl.channel2 & mask[offset + 13];
3067 buffer[offset + 15] = volctrl.channel3 & mask[offset + 15];
3070 cgc->buffer = buffer + offset - 8;
3071 memset(cgc->buffer, 0, 8);
3072 return cdrom_mode_select(cdi, cgc);
3075 static noinline int mmc_ioctl_cdrom_start_stop(struct cdrom_device_info *cdi,
3076 struct packet_command *cgc,
3079 struct cdrom_device_ops *cdo = cdi->ops;
3080 cdinfo(CD_DO_IOCTL, "entering CDROMSTART/CDROMSTOP\n");
3081 cgc->cmd[0] = GPCMD_START_STOP_UNIT;
3083 cgc->cmd[4] = (cmd == CDROMSTART) ? 1 : 0;
3084 cgc->data_direction = CGC_DATA_NONE;
3085 return cdo->generic_packet(cdi, cgc);
3088 static noinline int mmc_ioctl_cdrom_pause_resume(struct cdrom_device_info *cdi,
3089 struct packet_command *cgc,
3092 struct cdrom_device_ops *cdo = cdi->ops;
3093 cdinfo(CD_DO_IOCTL, "entering CDROMPAUSE/CDROMRESUME\n");
3094 cgc->cmd[0] = GPCMD_PAUSE_RESUME;
3095 cgc->cmd[8] = (cmd == CDROMRESUME) ? 1 : 0;
3096 cgc->data_direction = CGC_DATA_NONE;
3097 return cdo->generic_packet(cdi, cgc);
3100 static noinline int mmc_ioctl_dvd_read_struct(struct cdrom_device_info *cdi,
3102 struct packet_command *cgc)
3106 int size = sizeof(dvd_struct);
3108 if (!CDROM_CAN(CDC_DVD))
3111 s = kmalloc(size, GFP_KERNEL);
3115 cdinfo(CD_DO_IOCTL, "entering DVD_READ_STRUCT\n");
3116 if (copy_from_user(s, arg, size)) {
3121 ret = dvd_read_struct(cdi, s, cgc);
3125 if (copy_to_user(arg, s, size))
3132 static noinline int mmc_ioctl_dvd_auth(struct cdrom_device_info *cdi,
3137 if (!CDROM_CAN(CDC_DVD))
3139 cdinfo(CD_DO_IOCTL, "entering DVD_AUTH\n");
3140 IOCTL_IN(arg, dvd_authinfo, ai);
3141 ret = dvd_do_auth(cdi, &ai);
3144 IOCTL_OUT(arg, dvd_authinfo, ai);
3148 static noinline int mmc_ioctl_cdrom_next_writable(struct cdrom_device_info *cdi,
3153 cdinfo(CD_DO_IOCTL, "entering CDROM_NEXT_WRITABLE\n");
3154 ret = cdrom_get_next_writable(cdi, &next);
3157 IOCTL_OUT(arg, long, next);
3161 static noinline int mmc_ioctl_cdrom_last_written(struct cdrom_device_info *cdi,
3166 cdinfo(CD_DO_IOCTL, "entering CDROM_LAST_WRITTEN\n");
3167 ret = cdrom_get_last_written(cdi, &last);
3170 IOCTL_OUT(arg, long, last);
3174 static int mmc_ioctl(struct cdrom_device_info *cdi, unsigned int cmd,
3177 struct packet_command cgc;
3178 void __user *userptr = (void __user *)arg;
3180 memset(&cgc, 0, sizeof(cgc));
3182 /* build a unified command and queue it through
3183 cdo->generic_packet() */
3186 case CDROMREADMODE1:
3187 case CDROMREADMODE2:
3188 return mmc_ioctl_cdrom_read_data(cdi, userptr, &cgc, cmd);
3189 case CDROMREADAUDIO:
3190 return mmc_ioctl_cdrom_read_audio(cdi, userptr);
3192 return mmc_ioctl_cdrom_subchannel(cdi, userptr);
3194 return mmc_ioctl_cdrom_play_msf(cdi, userptr, &cgc);
3196 return mmc_ioctl_cdrom_play_blk(cdi, userptr, &cgc);
3199 return mmc_ioctl_cdrom_volume(cdi, userptr, &cgc, cmd);
3202 return mmc_ioctl_cdrom_start_stop(cdi, &cgc, cmd);
3205 return mmc_ioctl_cdrom_pause_resume(cdi, &cgc, cmd);
3206 case DVD_READ_STRUCT:
3207 return mmc_ioctl_dvd_read_struct(cdi, userptr, &cgc);
3209 return mmc_ioctl_dvd_auth(cdi, userptr);
3210 case CDROM_NEXT_WRITABLE:
3211 return mmc_ioctl_cdrom_next_writable(cdi, userptr);
3212 case CDROM_LAST_WRITTEN:
3213 return mmc_ioctl_cdrom_last_written(cdi, userptr);
3219 static int cdrom_get_track_info(struct cdrom_device_info *cdi, __u16 track, __u8 type,
3220 track_information *ti)
3222 struct cdrom_device_ops *cdo = cdi->ops;
3223 struct packet_command cgc;
3226 init_cdrom_command(&cgc, ti, 8, CGC_DATA_READ);
3227 cgc.cmd[0] = GPCMD_READ_TRACK_RZONE_INFO;
3228 cgc.cmd[1] = type & 3;
3229 cgc.cmd[4] = (track & 0xff00) >> 8;
3230 cgc.cmd[5] = track & 0xff;
3234 if ((ret = cdo->generic_packet(cdi, &cgc)))
3237 buflen = be16_to_cpu(ti->track_information_length) +
3238 sizeof(ti->track_information_length);
3240 if (buflen > sizeof(track_information))
3241 buflen = sizeof(track_information);
3243 cgc.cmd[8] = cgc.buflen = buflen;
3244 if ((ret = cdo->generic_packet(cdi, &cgc)))
3247 /* return actual fill size */
3251 /* requires CD R/RW */
3252 static int cdrom_get_disc_info(struct cdrom_device_info *cdi, disc_information *di)
3254 struct cdrom_device_ops *cdo = cdi->ops;
3255 struct packet_command cgc;
3258 /* set up command and get the disc info */
3259 init_cdrom_command(&cgc, di, sizeof(*di), CGC_DATA_READ);
3260 cgc.cmd[0] = GPCMD_READ_DISC_INFO;
3261 cgc.cmd[8] = cgc.buflen = 2;
3264 if ((ret = cdo->generic_packet(cdi, &cgc)))
3267 /* not all drives have the same disc_info length, so requeue
3268 * packet with the length the drive tells us it can supply
3270 buflen = be16_to_cpu(di->disc_information_length) +
3271 sizeof(di->disc_information_length);
3273 if (buflen > sizeof(disc_information))
3274 buflen = sizeof(disc_information);
3276 cgc.cmd[8] = cgc.buflen = buflen;
3277 if ((ret = cdo->generic_packet(cdi, &cgc)))
3280 /* return actual fill size */
3284 /* return the last written block on the CD-R media. this is for the udf
3286 int cdrom_get_last_written(struct cdrom_device_info *cdi, long *last_written)
3288 struct cdrom_tocentry toc;
3289 disc_information di;
3290 track_information ti;
3292 int ret = -1, ti_size;
3294 if (!CDROM_CAN(CDC_GENERIC_PACKET))
3297 ret = cdrom_get_disc_info(cdi, &di);
3298 if (ret < (int)(offsetof(typeof(di), last_track_lsb)
3299 + sizeof(di.last_track_lsb)))
3302 /* if unit didn't return msb, it's zeroed by cdrom_get_disc_info */
3303 last_track = (di.last_track_msb << 8) | di.last_track_lsb;
3304 ti_size = cdrom_get_track_info(cdi, last_track, 1, &ti);
3305 if (ti_size < (int)offsetof(typeof(ti), track_start))
3308 /* if this track is blank, try the previous. */
3313 ti_size = cdrom_get_track_info(cdi, last_track, 1, &ti);
3316 if (ti_size < (int)(offsetof(typeof(ti), track_size)
3317 + sizeof(ti.track_size)))
3320 /* if last recorded field is valid, return it. */
3321 if (ti.lra_v && ti_size >= (int)(offsetof(typeof(ti), last_rec_address)
3322 + sizeof(ti.last_rec_address))) {
3323 *last_written = be32_to_cpu(ti.last_rec_address);
3325 /* make it up instead */
3326 *last_written = be32_to_cpu(ti.track_start) +
3327 be32_to_cpu(ti.track_size);
3329 *last_written -= (be32_to_cpu(ti.free_blocks) + 7);
3333 /* this is where we end up if the drive either can't do a
3334 GPCMD_READ_DISC_INFO or GPCMD_READ_TRACK_RZONE_INFO or if
3335 it doesn't give enough information or fails. then we return
3336 the toc contents. */
3338 toc.cdte_format = CDROM_MSF;
3339 toc.cdte_track = CDROM_LEADOUT;
3340 if ((ret = cdi->ops->audio_ioctl(cdi, CDROMREADTOCENTRY, &toc)))
3342 sanitize_format(&toc.cdte_addr, &toc.cdte_format, CDROM_LBA);
3343 *last_written = toc.cdte_addr.lba;
3347 /* return the next writable block. also for udf file system. */
3348 static int cdrom_get_next_writable(struct cdrom_device_info *cdi, long *next_writable)
3350 disc_information di;
3351 track_information ti;
3355 if (!CDROM_CAN(CDC_GENERIC_PACKET))
3356 goto use_last_written;
3358 ret = cdrom_get_disc_info(cdi, &di);
3359 if (ret < 0 || ret < offsetof(typeof(di), last_track_lsb)
3360 + sizeof(di.last_track_lsb))
3361 goto use_last_written;
3363 /* if unit didn't return msb, it's zeroed by cdrom_get_disc_info */
3364 last_track = (di.last_track_msb << 8) | di.last_track_lsb;
3365 ti_size = cdrom_get_track_info(cdi, last_track, 1, &ti);
3366 if (ti_size < 0 || ti_size < offsetof(typeof(ti), track_start))
3367 goto use_last_written;
3369 /* if this track is blank, try the previous. */
3371 if (last_track == 1)
3372 goto use_last_written;
3374 ti_size = cdrom_get_track_info(cdi, last_track, 1, &ti);
3376 goto use_last_written;
3379 /* if next recordable address field is valid, use it. */
3380 if (ti.nwa_v && ti_size >= offsetof(typeof(ti), next_writable)
3381 + sizeof(ti.next_writable)) {
3382 *next_writable = be32_to_cpu(ti.next_writable);
3387 if ((ret = cdrom_get_last_written(cdi, next_writable))) {
3391 *next_writable += 7;
3396 EXPORT_SYMBOL(cdrom_get_last_written);
3397 EXPORT_SYMBOL(register_cdrom);
3398 EXPORT_SYMBOL(unregister_cdrom);
3399 EXPORT_SYMBOL(cdrom_open);
3400 EXPORT_SYMBOL(cdrom_release);
3401 EXPORT_SYMBOL(cdrom_ioctl);
3402 EXPORT_SYMBOL(cdrom_media_changed);
3403 EXPORT_SYMBOL(cdrom_number_of_slots);
3404 EXPORT_SYMBOL(cdrom_mode_select);
3405 EXPORT_SYMBOL(cdrom_mode_sense);
3406 EXPORT_SYMBOL(init_cdrom_command);
3407 EXPORT_SYMBOL(cdrom_get_media_event);
3409 #ifdef CONFIG_SYSCTL
3411 #define CDROM_STR_SIZE 1000
3413 static struct cdrom_sysctl_settings {
3414 char info[CDROM_STR_SIZE]; /* general info */
3415 int autoclose; /* close tray upon mount, etc */
3416 int autoeject; /* eject on umount */
3417 int debug; /* turn on debugging messages */
3418 int lock; /* lock the door on device open */
3419 int check; /* check media type */
3420 } cdrom_sysctl_settings;
3422 enum cdrom_print_option {
3429 static int cdrom_print_info(const char *header, int val, char *info,
3430 int *pos, enum cdrom_print_option option)
3432 const int max_size = sizeof(cdrom_sysctl_settings.info);
3433 struct cdrom_device_info *cdi;
3436 ret = scnprintf(info + *pos, max_size - *pos, header);
3442 list_for_each_entry(cdi, &cdrom_list, list) {
3445 ret = scnprintf(info + *pos, max_size - *pos,
3449 ret = scnprintf(info + *pos, max_size - *pos,
3450 "\t%d", cdi->speed);
3453 ret = scnprintf(info + *pos, max_size - *pos,
3454 "\t%d", cdi->capacity);
3456 case CTL_CAPABILITY:
3457 ret = scnprintf(info + *pos, max_size - *pos,
3458 "\t%d", CDROM_CAN(val) != 0);
3461 pr_info("invalid option%d\n", option);
3472 static int cdrom_sysctl_info(ctl_table *ctl, int write,
3473 void __user *buffer, size_t *lenp, loff_t *ppos)
3476 char *info = cdrom_sysctl_settings.info;
3477 const int max_size = sizeof(cdrom_sysctl_settings.info);
3479 if (!*lenp || (*ppos && !write)) {
3484 mutex_lock(&cdrom_mutex);
3486 pos = sprintf(info, "CD-ROM information, " VERSION "\n");
3488 if (cdrom_print_info("\ndrive name:\t", 0, info, &pos, CTL_NAME))
3490 if (cdrom_print_info("\ndrive speed:\t", 0, info, &pos, CTL_SPEED))
3492 if (cdrom_print_info("\ndrive # of slots:", 0, info, &pos, CTL_SLOTS))
3494 if (cdrom_print_info("\nCan close tray:\t",
3495 CDC_CLOSE_TRAY, info, &pos, CTL_CAPABILITY))
3497 if (cdrom_print_info("\nCan open tray:\t",
3498 CDC_OPEN_TRAY, info, &pos, CTL_CAPABILITY))
3500 if (cdrom_print_info("\nCan lock tray:\t",
3501 CDC_LOCK, info, &pos, CTL_CAPABILITY))
3503 if (cdrom_print_info("\nCan change speed:",
3504 CDC_SELECT_SPEED, info, &pos, CTL_CAPABILITY))
3506 if (cdrom_print_info("\nCan select disk:",
3507 CDC_SELECT_DISC, info, &pos, CTL_CAPABILITY))
3509 if (cdrom_print_info("\nCan read multisession:",
3510 CDC_MULTI_SESSION, info, &pos, CTL_CAPABILITY))
3512 if (cdrom_print_info("\nCan read MCN:\t",
3513 CDC_MCN, info, &pos, CTL_CAPABILITY))
3515 if (cdrom_print_info("\nReports media changed:",
3516 CDC_MEDIA_CHANGED, info, &pos, CTL_CAPABILITY))
3518 if (cdrom_print_info("\nCan play audio:\t",
3519 CDC_PLAY_AUDIO, info, &pos, CTL_CAPABILITY))
3521 if (cdrom_print_info("\nCan write CD-R:\t",
3522 CDC_CD_R, info, &pos, CTL_CAPABILITY))
3524 if (cdrom_print_info("\nCan write CD-RW:",
3525 CDC_CD_RW, info, &pos, CTL_CAPABILITY))
3527 if (cdrom_print_info("\nCan read DVD:\t",
3528 CDC_DVD, info, &pos, CTL_CAPABILITY))
3530 if (cdrom_print_info("\nCan write DVD-R:",
3531 CDC_DVD_R, info, &pos, CTL_CAPABILITY))
3533 if (cdrom_print_info("\nCan write DVD-RAM:",
3534 CDC_DVD_RAM, info, &pos, CTL_CAPABILITY))
3536 if (cdrom_print_info("\nCan read MRW:\t",
3537 CDC_MRW, info, &pos, CTL_CAPABILITY))
3539 if (cdrom_print_info("\nCan write MRW:\t",
3540 CDC_MRW_W, info, &pos, CTL_CAPABILITY))
3542 if (cdrom_print_info("\nCan write RAM:\t",
3543 CDC_RAM, info, &pos, CTL_CAPABILITY))
3545 if (!scnprintf(info + pos, max_size - pos, "\n\n"))
3548 mutex_unlock(&cdrom_mutex);
3549 return proc_dostring(ctl, write, buffer, lenp, ppos);
3551 pr_info("info buffer too small\n");
3555 /* Unfortunately, per device settings are not implemented through
3556 procfs/sysctl yet. When they are, this will naturally disappear. For now
3557 just update all drives. Later this will become the template on which
3558 new registered drives will be based. */
3559 static void cdrom_update_settings(void)
3561 struct cdrom_device_info *cdi;
3563 mutex_lock(&cdrom_mutex);
3564 list_for_each_entry(cdi, &cdrom_list, list) {
3565 if (autoclose && CDROM_CAN(CDC_CLOSE_TRAY))
3566 cdi->options |= CDO_AUTO_CLOSE;
3567 else if (!autoclose)
3568 cdi->options &= ~CDO_AUTO_CLOSE;
3569 if (autoeject && CDROM_CAN(CDC_OPEN_TRAY))
3570 cdi->options |= CDO_AUTO_EJECT;
3571 else if (!autoeject)
3572 cdi->options &= ~CDO_AUTO_EJECT;
3573 if (lockdoor && CDROM_CAN(CDC_LOCK))
3574 cdi->options |= CDO_LOCK;
3576 cdi->options &= ~CDO_LOCK;
3577 if (check_media_type)
3578 cdi->options |= CDO_CHECK_TYPE;
3580 cdi->options &= ~CDO_CHECK_TYPE;
3582 mutex_unlock(&cdrom_mutex);
3585 static int cdrom_sysctl_handler(ctl_table *ctl, int write,
3586 void __user *buffer, size_t *lenp, loff_t *ppos)
3590 ret = proc_dointvec(ctl, write, buffer, lenp, ppos);
3594 /* we only care for 1 or 0. */
3595 autoclose = !!cdrom_sysctl_settings.autoclose;
3596 autoeject = !!cdrom_sysctl_settings.autoeject;
3597 debug = !!cdrom_sysctl_settings.debug;
3598 lockdoor = !!cdrom_sysctl_settings.lock;
3599 check_media_type = !!cdrom_sysctl_settings.check;
3601 /* update the option flags according to the changes. we
3602 don't have per device options through sysctl yet,
3603 but we will have and then this will disappear. */
3604 cdrom_update_settings();
3610 /* Place files in /proc/sys/dev/cdrom */
3611 static ctl_table cdrom_table[] = {
3614 .data = &cdrom_sysctl_settings.info,
3615 .maxlen = CDROM_STR_SIZE,
3617 .proc_handler = cdrom_sysctl_info,
3620 .procname = "autoclose",
3621 .data = &cdrom_sysctl_settings.autoclose,
3622 .maxlen = sizeof(int),
3624 .proc_handler = cdrom_sysctl_handler,
3627 .procname = "autoeject",
3628 .data = &cdrom_sysctl_settings.autoeject,
3629 .maxlen = sizeof(int),
3631 .proc_handler = cdrom_sysctl_handler,
3634 .procname = "debug",
3635 .data = &cdrom_sysctl_settings.debug,
3636 .maxlen = sizeof(int),
3638 .proc_handler = cdrom_sysctl_handler,
3642 .data = &cdrom_sysctl_settings.lock,
3643 .maxlen = sizeof(int),
3645 .proc_handler = cdrom_sysctl_handler,
3648 .procname = "check_media",
3649 .data = &cdrom_sysctl_settings.check,
3650 .maxlen = sizeof(int),
3652 .proc_handler = cdrom_sysctl_handler
3657 static ctl_table cdrom_cdrom_table[] = {
3659 .procname = "cdrom",
3662 .child = cdrom_table,
3667 /* Make sure that /proc/sys/dev is there */
3668 static ctl_table cdrom_root_table[] = {
3673 .child = cdrom_cdrom_table,
3677 static struct ctl_table_header *cdrom_sysctl_header;
3679 static void cdrom_sysctl_register(void)
3681 static int initialized;
3683 if (initialized == 1)
3686 cdrom_sysctl_header = register_sysctl_table(cdrom_root_table);
3688 /* set the defaults */
3689 cdrom_sysctl_settings.autoclose = autoclose;
3690 cdrom_sysctl_settings.autoeject = autoeject;
3691 cdrom_sysctl_settings.debug = debug;
3692 cdrom_sysctl_settings.lock = lockdoor;
3693 cdrom_sysctl_settings.check = check_media_type;
3698 static void cdrom_sysctl_unregister(void)
3700 if (cdrom_sysctl_header)
3701 unregister_sysctl_table(cdrom_sysctl_header);
3704 #else /* CONFIG_SYSCTL */
3706 static void cdrom_sysctl_register(void)
3710 static void cdrom_sysctl_unregister(void)
3714 #endif /* CONFIG_SYSCTL */
3716 static int __init cdrom_init(void)
3718 cdrom_sysctl_register();
3723 static void __exit cdrom_exit(void)
3725 pr_info("Uniform CD-ROM driver unloaded\n");
3726 cdrom_sysctl_unregister();
3729 module_init(cdrom_init);
3730 module_exit(cdrom_exit);
3731 MODULE_LICENSE("GPL");