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.rst 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/atomic.h>
269 #include <linux/module.h>
270 #include <linux/fs.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>
285 #include <linux/uaccess.h>
286 #include <scsi/scsi_common.h>
287 #include <scsi/scsi_request.h>
289 /* used to tell the module to turn on full debugging messages */
291 /* default compatibility mode */
292 static bool autoclose
=1;
293 static bool autoeject
;
294 static bool lockdoor
= 1;
295 /* will we ever get to use this... sigh. */
296 static bool check_media_type
;
297 /* automatically restart mrw format */
298 static bool mrw_format_restart
= 1;
299 module_param(debug
, bool, 0);
300 module_param(autoclose
, bool, 0);
301 module_param(autoeject
, bool, 0);
302 module_param(lockdoor
, bool, 0);
303 module_param(check_media_type
, bool, 0);
304 module_param(mrw_format_restart
, bool, 0);
306 static DEFINE_MUTEX(cdrom_mutex
);
308 static const char *mrw_format_status
[] = {
315 static const char *mrw_address_space
[] = { "DMA", "GAA" };
317 #if (ERRLOGMASK != CD_NOTHING)
318 #define cd_dbg(type, fmt, ...) \
320 if ((ERRLOGMASK & type) || debug == 1) \
321 pr_debug(fmt, ##__VA_ARGS__); \
324 #define cd_dbg(type, fmt, ...) \
326 if (0 && (ERRLOGMASK & type) || debug == 1) \
327 pr_debug(fmt, ##__VA_ARGS__); \
331 /* The (cdo->capability & ~cdi->mask & CDC_XXX) construct was used in
332 a lot of places. This macro makes the code more clear. */
333 #define CDROM_CAN(type) (cdi->ops->capability & ~cdi->mask & (type))
336 * Another popular OS uses 7 seconds as the hard timeout for default
337 * commands, so it is a good choice for us as well.
339 #define CDROM_DEF_TIMEOUT (7 * HZ)
341 /* Not-exported routines. */
343 static void cdrom_sysctl_register(void);
345 static LIST_HEAD(cdrom_list
);
347 int cdrom_dummy_generic_packet(struct cdrom_device_info
*cdi
,
348 struct packet_command
*cgc
)
351 cgc
->sshdr
->sense_key
= 0x05;
352 cgc
->sshdr
->asc
= 0x20;
353 cgc
->sshdr
->ascq
= 0x00;
359 EXPORT_SYMBOL(cdrom_dummy_generic_packet
);
361 static int cdrom_flush_cache(struct cdrom_device_info
*cdi
)
363 struct packet_command cgc
;
365 init_cdrom_command(&cgc
, NULL
, 0, CGC_DATA_NONE
);
366 cgc
.cmd
[0] = GPCMD_FLUSH_CACHE
;
368 cgc
.timeout
= 5 * 60 * HZ
;
370 return cdi
->ops
->generic_packet(cdi
, &cgc
);
373 /* requires CD R/RW */
374 static int cdrom_get_disc_info(struct cdrom_device_info
*cdi
,
375 disc_information
*di
)
377 const struct cdrom_device_ops
*cdo
= cdi
->ops
;
378 struct packet_command cgc
;
381 /* set up command and get the disc info */
382 init_cdrom_command(&cgc
, di
, sizeof(*di
), CGC_DATA_READ
);
383 cgc
.cmd
[0] = GPCMD_READ_DISC_INFO
;
384 cgc
.cmd
[8] = cgc
.buflen
= 2;
387 ret
= cdo
->generic_packet(cdi
, &cgc
);
391 /* not all drives have the same disc_info length, so requeue
392 * packet with the length the drive tells us it can supply
394 buflen
= be16_to_cpu(di
->disc_information_length
) +
395 sizeof(di
->disc_information_length
);
397 if (buflen
> sizeof(disc_information
))
398 buflen
= sizeof(disc_information
);
400 cgc
.cmd
[8] = cgc
.buflen
= buflen
;
401 ret
= cdo
->generic_packet(cdi
, &cgc
);
405 /* return actual fill size */
409 /* This macro makes sure we don't have to check on cdrom_device_ops
410 * existence in the run-time routines below. Change_capability is a
411 * hack to have the capability flags defined const, while we can still
412 * change it here without gcc complaining at every line.
414 #define ENSURE(cdo, call, bits) \
416 if (cdo->call == NULL) \
417 WARN_ON_ONCE((cdo)->capability & (bits)); \
421 * the first prototypes used 0x2c as the page code for the mrw mode page,
422 * subsequently this was changed to 0x03. probe the one used by this drive
424 static int cdrom_mrw_probe_pc(struct cdrom_device_info
*cdi
)
426 struct packet_command cgc
;
429 init_cdrom_command(&cgc
, buffer
, sizeof(buffer
), CGC_DATA_READ
);
434 if (!cdrom_mode_sense(cdi
, &cgc
, MRW_MODE_PC
, 0)) {
435 cdi
->mrw_mode_page
= MRW_MODE_PC
;
437 } else if (!cdrom_mode_sense(cdi
, &cgc
, MRW_MODE_PC_PRE1
, 0)) {
438 cdi
->mrw_mode_page
= MRW_MODE_PC_PRE1
;
445 static int cdrom_is_mrw(struct cdrom_device_info
*cdi
, int *write
)
447 struct packet_command cgc
;
448 struct mrw_feature_desc
*mfd
;
449 unsigned char buffer
[16];
454 init_cdrom_command(&cgc
, buffer
, sizeof(buffer
), CGC_DATA_READ
);
456 cgc
.cmd
[0] = GPCMD_GET_CONFIGURATION
;
457 cgc
.cmd
[3] = CDF_MRW
;
458 cgc
.cmd
[8] = sizeof(buffer
);
461 if ((ret
= cdi
->ops
->generic_packet(cdi
, &cgc
)))
464 mfd
= (struct mrw_feature_desc
*)&buffer
[sizeof(struct feature_header
)];
465 if (be16_to_cpu(mfd
->feature_code
) != CDF_MRW
)
469 if ((ret
= cdrom_mrw_probe_pc(cdi
))) {
477 static int cdrom_mrw_bgformat(struct cdrom_device_info
*cdi
, int cont
)
479 struct packet_command cgc
;
480 unsigned char buffer
[12];
483 pr_info("%sstarting format\n", cont
? "Re" : "");
486 * FmtData bit set (bit 4), format type is 1
488 init_cdrom_command(&cgc
, buffer
, sizeof(buffer
), CGC_DATA_WRITE
);
489 cgc
.cmd
[0] = GPCMD_FORMAT_UNIT
;
490 cgc
.cmd
[1] = (1 << 4) | 1;
492 cgc
.timeout
= 5 * 60 * HZ
;
495 * 4 byte format list header, 8 byte format list descriptor
508 buffer
[8] = 0x24 << 2;
511 ret
= cdi
->ops
->generic_packet(cdi
, &cgc
);
513 pr_info("bgformat failed\n");
518 static int cdrom_mrw_bgformat_susp(struct cdrom_device_info
*cdi
, int immed
)
520 struct packet_command cgc
;
522 init_cdrom_command(&cgc
, NULL
, 0, CGC_DATA_NONE
);
523 cgc
.cmd
[0] = GPCMD_CLOSE_TRACK
;
526 * Session = 1, Track = 0
528 cgc
.cmd
[1] = !!immed
;
531 cgc
.timeout
= 5 * 60 * HZ
;
533 return cdi
->ops
->generic_packet(cdi
, &cgc
);
536 static int cdrom_mrw_exit(struct cdrom_device_info
*cdi
)
541 ret
= cdrom_get_disc_info(cdi
, &di
);
542 if (ret
< 0 || ret
< (int)offsetof(typeof(di
),disc_type
))
546 if (di
.mrw_status
== CDM_MRW_BGFORMAT_ACTIVE
) {
547 pr_info("issuing MRW background format suspend\n");
548 ret
= cdrom_mrw_bgformat_susp(cdi
, 0);
551 if (!ret
&& cdi
->media_written
)
552 ret
= cdrom_flush_cache(cdi
);
557 static int cdrom_mrw_set_lba_space(struct cdrom_device_info
*cdi
, int space
)
559 struct packet_command cgc
;
560 struct mode_page_header
*mph
;
562 int ret
, offset
, size
;
564 init_cdrom_command(&cgc
, buffer
, sizeof(buffer
), CGC_DATA_READ
);
567 cgc
.buflen
= sizeof(buffer
);
569 ret
= cdrom_mode_sense(cdi
, &cgc
, cdi
->mrw_mode_page
, 0);
573 mph
= (struct mode_page_header
*)buffer
;
574 offset
= be16_to_cpu(mph
->desc_length
);
575 size
= be16_to_cpu(mph
->mode_data_length
) + 2;
577 buffer
[offset
+ 3] = space
;
580 ret
= cdrom_mode_select(cdi
, &cgc
);
584 pr_info("%s: mrw address space %s selected\n",
585 cdi
->name
, mrw_address_space
[space
]);
589 int register_cdrom(struct gendisk
*disk
, struct cdrom_device_info
*cdi
)
591 static char banner_printed
;
592 const struct cdrom_device_ops
*cdo
= cdi
->ops
;
594 cd_dbg(CD_OPEN
, "entering register_cdrom\n");
596 if (cdo
->open
== NULL
|| cdo
->release
== NULL
)
598 if (!banner_printed
) {
599 pr_info("Uniform CD-ROM driver " REVISION
"\n");
601 cdrom_sysctl_register();
607 ENSURE(cdo
, drive_status
, CDC_DRIVE_STATUS
);
608 if (cdo
->check_events
== NULL
)
609 WARN_ON_ONCE(cdo
->capability
& (CDC_MEDIA_CHANGED
| CDC_SELECT_DISC
));
610 ENSURE(cdo
, tray_move
, CDC_CLOSE_TRAY
| CDC_OPEN_TRAY
);
611 ENSURE(cdo
, lock_door
, CDC_LOCK
);
612 ENSURE(cdo
, select_speed
, CDC_SELECT_SPEED
);
613 ENSURE(cdo
, get_last_session
, CDC_MULTI_SESSION
);
614 ENSURE(cdo
, get_mcn
, CDC_MCN
);
615 ENSURE(cdo
, reset
, CDC_RESET
);
616 ENSURE(cdo
, generic_packet
, CDC_GENERIC_PACKET
);
618 cdi
->options
= CDO_USE_FFLAGS
;
620 if (autoclose
== 1 && CDROM_CAN(CDC_CLOSE_TRAY
))
621 cdi
->options
|= (int) CDO_AUTO_CLOSE
;
622 if (autoeject
== 1 && CDROM_CAN(CDC_OPEN_TRAY
))
623 cdi
->options
|= (int) CDO_AUTO_EJECT
;
625 cdi
->options
|= (int) CDO_LOCK
;
626 if (check_media_type
== 1)
627 cdi
->options
|= (int) CDO_CHECK_TYPE
;
629 if (CDROM_CAN(CDC_MRW_W
))
630 cdi
->exit
= cdrom_mrw_exit
;
633 cdi
->cdda_method
= CDDA_BPC_FULL
;
635 cdi
->cdda_method
= CDDA_OLD
;
637 WARN_ON(!cdo
->generic_packet
);
639 cd_dbg(CD_REG_UNREG
, "drive \"/dev/%s\" registered\n", cdi
->name
);
640 mutex_lock(&cdrom_mutex
);
641 list_add(&cdi
->list
, &cdrom_list
);
642 mutex_unlock(&cdrom_mutex
);
647 void unregister_cdrom(struct cdrom_device_info
*cdi
)
649 cd_dbg(CD_OPEN
, "entering unregister_cdrom\n");
651 mutex_lock(&cdrom_mutex
);
652 list_del(&cdi
->list
);
653 mutex_unlock(&cdrom_mutex
);
658 cd_dbg(CD_REG_UNREG
, "drive \"/dev/%s\" unregistered\n", cdi
->name
);
661 int cdrom_get_media_event(struct cdrom_device_info
*cdi
,
662 struct media_event_desc
*med
)
664 struct packet_command cgc
;
665 unsigned char buffer
[8];
666 struct event_header
*eh
= (struct event_header
*)buffer
;
668 init_cdrom_command(&cgc
, buffer
, sizeof(buffer
), CGC_DATA_READ
);
669 cgc
.cmd
[0] = GPCMD_GET_EVENT_STATUS_NOTIFICATION
;
670 cgc
.cmd
[1] = 1; /* IMMED */
671 cgc
.cmd
[4] = 1 << 4; /* media event */
672 cgc
.cmd
[8] = sizeof(buffer
);
675 if (cdi
->ops
->generic_packet(cdi
, &cgc
))
678 if (be16_to_cpu(eh
->data_len
) < sizeof(*med
))
681 if (eh
->nea
|| eh
->notification_class
!= 0x4)
684 memcpy(med
, &buffer
[sizeof(*eh
)], sizeof(*med
));
688 static int cdrom_get_random_writable(struct cdrom_device_info
*cdi
,
689 struct rwrt_feature_desc
*rfd
)
691 struct packet_command cgc
;
695 init_cdrom_command(&cgc
, buffer
, sizeof(buffer
), CGC_DATA_READ
);
697 cgc
.cmd
[0] = GPCMD_GET_CONFIGURATION
; /* often 0x46 */
698 cgc
.cmd
[3] = CDF_RWRT
; /* often 0x0020 */
699 cgc
.cmd
[8] = sizeof(buffer
); /* often 0x18 */
702 if ((ret
= cdi
->ops
->generic_packet(cdi
, &cgc
)))
705 memcpy(rfd
, &buffer
[sizeof(struct feature_header
)], sizeof (*rfd
));
709 static int cdrom_has_defect_mgt(struct cdrom_device_info
*cdi
)
711 struct packet_command cgc
;
713 __be16
*feature_code
;
716 init_cdrom_command(&cgc
, buffer
, sizeof(buffer
), CGC_DATA_READ
);
718 cgc
.cmd
[0] = GPCMD_GET_CONFIGURATION
;
719 cgc
.cmd
[3] = CDF_HWDM
;
720 cgc
.cmd
[8] = sizeof(buffer
);
723 if ((ret
= cdi
->ops
->generic_packet(cdi
, &cgc
)))
726 feature_code
= (__be16
*) &buffer
[sizeof(struct feature_header
)];
727 if (be16_to_cpu(*feature_code
) == CDF_HWDM
)
734 static int cdrom_is_random_writable(struct cdrom_device_info
*cdi
, int *write
)
736 struct rwrt_feature_desc rfd
;
741 if ((ret
= cdrom_get_random_writable(cdi
, &rfd
)))
744 if (CDF_RWRT
== be16_to_cpu(rfd
.feature_code
))
750 static int cdrom_media_erasable(struct cdrom_device_info
*cdi
)
755 ret
= cdrom_get_disc_info(cdi
, &di
);
756 if (ret
< 0 || ret
< offsetof(typeof(di
), n_first_track
))
763 * FIXME: check RO bit
765 static int cdrom_dvdram_open_write(struct cdrom_device_info
*cdi
)
767 int ret
= cdrom_media_erasable(cdi
);
770 * allow writable open if media info read worked and media is
771 * erasable, _or_ if it fails since not all drives support it
779 static int cdrom_mrw_open_write(struct cdrom_device_info
*cdi
)
785 * always reset to DMA lba space on open
787 if (cdrom_mrw_set_lba_space(cdi
, MRW_LBA_DMA
)) {
788 pr_err("failed setting lba address space\n");
792 ret
= cdrom_get_disc_info(cdi
, &di
);
793 if (ret
< 0 || ret
< offsetof(typeof(di
),disc_type
))
801 * 0 - not MRW formatted
802 * 1 - MRW bgformat started, but not running or complete
803 * 2 - MRW bgformat in progress
804 * 3 - MRW formatting complete
807 pr_info("open: mrw_status '%s'\n", mrw_format_status
[di
.mrw_status
]);
810 else if (di
.mrw_status
== CDM_MRW_BGFORMAT_INACTIVE
&&
812 ret
= cdrom_mrw_bgformat(cdi
, 1);
817 static int mo_open_write(struct cdrom_device_info
*cdi
)
819 struct packet_command cgc
;
823 init_cdrom_command(&cgc
, &buffer
, 4, CGC_DATA_READ
);
827 * obtain write protect information as per
828 * drivers/scsi/sd.c:sd_read_write_protect_flag
831 ret
= cdrom_mode_sense(cdi
, &cgc
, GPMODE_ALL_PAGES
, 0);
833 ret
= cdrom_mode_sense(cdi
, &cgc
, GPMODE_VENDOR_PAGE
, 0);
836 ret
= cdrom_mode_sense(cdi
, &cgc
, GPMODE_ALL_PAGES
, 0);
839 /* drive gave us no info, let the user go ahead */
843 return buffer
[3] & 0x80;
846 static int cdrom_ram_open_write(struct cdrom_device_info
*cdi
)
848 struct rwrt_feature_desc rfd
;
851 if ((ret
= cdrom_has_defect_mgt(cdi
)))
854 if ((ret
= cdrom_get_random_writable(cdi
, &rfd
)))
856 else if (CDF_RWRT
== be16_to_cpu(rfd
.feature_code
))
859 cd_dbg(CD_OPEN
, "can open for random write\n");
863 static void cdrom_mmc3_profile(struct cdrom_device_info
*cdi
)
865 struct packet_command cgc
;
867 int ret
, mmc3_profile
;
869 init_cdrom_command(&cgc
, buffer
, sizeof(buffer
), CGC_DATA_READ
);
871 cgc
.cmd
[0] = GPCMD_GET_CONFIGURATION
;
873 cgc
.cmd
[2] = cgc
.cmd
[3] = 0; /* Starting Feature Number */
874 cgc
.cmd
[8] = sizeof(buffer
); /* Allocation Length */
877 if ((ret
= cdi
->ops
->generic_packet(cdi
, &cgc
)))
878 mmc3_profile
= 0xffff;
880 mmc3_profile
= (buffer
[6] << 8) | buffer
[7];
882 cdi
->mmc3_profile
= mmc3_profile
;
885 static int cdrom_is_dvd_rw(struct cdrom_device_info
*cdi
)
887 switch (cdi
->mmc3_profile
) {
888 case 0x12: /* DVD-RAM */
889 case 0x1A: /* DVD+RW */
890 case 0x43: /* BD-RE */
898 * returns 0 for ok to open write, non-0 to disallow
900 static int cdrom_open_write(struct cdrom_device_info
*cdi
)
902 int mrw
, mrw_write
, ram_write
;
906 if (!cdrom_is_mrw(cdi
, &mrw_write
))
909 if (CDROM_CAN(CDC_MO_DRIVE
))
912 (void) cdrom_is_random_writable(cdi
, &ram_write
);
915 cdi
->mask
&= ~CDC_MRW
;
917 cdi
->mask
|= CDC_MRW
;
920 cdi
->mask
&= ~CDC_MRW_W
;
922 cdi
->mask
|= CDC_MRW_W
;
925 cdi
->mask
&= ~CDC_RAM
;
927 cdi
->mask
|= CDC_RAM
;
929 if (CDROM_CAN(CDC_MRW_W
))
930 ret
= cdrom_mrw_open_write(cdi
);
931 else if (CDROM_CAN(CDC_DVD_RAM
))
932 ret
= cdrom_dvdram_open_write(cdi
);
933 else if (CDROM_CAN(CDC_RAM
) &&
934 !CDROM_CAN(CDC_CD_R
|CDC_CD_RW
|CDC_DVD
|CDC_DVD_R
|CDC_MRW
|CDC_MO_DRIVE
))
935 ret
= cdrom_ram_open_write(cdi
);
936 else if (CDROM_CAN(CDC_MO_DRIVE
))
937 ret
= mo_open_write(cdi
);
938 else if (!cdrom_is_dvd_rw(cdi
))
944 static void cdrom_dvd_rw_close_write(struct cdrom_device_info
*cdi
)
946 struct packet_command cgc
;
948 if (cdi
->mmc3_profile
!= 0x1a) {
949 cd_dbg(CD_CLOSE
, "%s: No DVD+RW\n", cdi
->name
);
953 if (!cdi
->media_written
) {
954 cd_dbg(CD_CLOSE
, "%s: DVD+RW media clean\n", cdi
->name
);
958 pr_info("%s: dirty DVD+RW media, \"finalizing\"\n", cdi
->name
);
960 init_cdrom_command(&cgc
, NULL
, 0, CGC_DATA_NONE
);
961 cgc
.cmd
[0] = GPCMD_FLUSH_CACHE
;
963 cdi
->ops
->generic_packet(cdi
, &cgc
);
965 init_cdrom_command(&cgc
, NULL
, 0, CGC_DATA_NONE
);
966 cgc
.cmd
[0] = GPCMD_CLOSE_TRACK
;
967 cgc
.timeout
= 3000*HZ
;
969 cdi
->ops
->generic_packet(cdi
, &cgc
);
971 init_cdrom_command(&cgc
, NULL
, 0, CGC_DATA_NONE
);
972 cgc
.cmd
[0] = GPCMD_CLOSE_TRACK
;
973 cgc
.cmd
[2] = 2; /* Close session */
975 cgc
.timeout
= 3000*HZ
;
976 cdi
->ops
->generic_packet(cdi
, &cgc
);
978 cdi
->media_written
= 0;
981 static int cdrom_close_write(struct cdrom_device_info
*cdi
)
984 return cdrom_flush_cache(cdi
);
990 /* badly broken, I know. Is due for a fixup anytime. */
991 static void cdrom_count_tracks(struct cdrom_device_info
*cdi
, tracktype
*tracks
)
993 struct cdrom_tochdr header
;
994 struct cdrom_tocentry entry
;
1001 cd_dbg(CD_COUNT_TRACKS
, "entering cdrom_count_tracks\n");
1003 if (!CDROM_CAN(CDC_PLAY_AUDIO
)) {
1004 tracks
->error
= CDS_NO_INFO
;
1008 /* Grab the TOC header so we can see how many tracks there are */
1009 ret
= cdi
->ops
->audio_ioctl(cdi
, CDROMREADTOCHDR
, &header
);
1011 if (ret
== -ENOMEDIUM
)
1012 tracks
->error
= CDS_NO_DISC
;
1014 tracks
->error
= CDS_NO_INFO
;
1017 /* check what type of tracks are on this disc */
1018 entry
.cdte_format
= CDROM_MSF
;
1019 for (i
= header
.cdth_trk0
; i
<= header
.cdth_trk1
; i
++) {
1020 entry
.cdte_track
= i
;
1021 if (cdi
->ops
->audio_ioctl(cdi
, CDROMREADTOCENTRY
, &entry
)) {
1022 tracks
->error
= CDS_NO_INFO
;
1025 if (entry
.cdte_ctrl
& CDROM_DATA_TRACK
) {
1026 if (entry
.cdte_format
== 0x10)
1028 else if (entry
.cdte_format
== 0x20)
1035 cd_dbg(CD_COUNT_TRACKS
, "track %d: format=%d, ctrl=%d\n",
1036 i
, entry
.cdte_format
, entry
.cdte_ctrl
);
1038 cd_dbg(CD_COUNT_TRACKS
, "disc has %d tracks: %d=audio %d=data %d=Cd-I %d=XA\n",
1039 header
.cdth_trk1
, tracks
->audio
, tracks
->data
,
1040 tracks
->cdi
, tracks
->xa
);
1044 int open_for_data(struct cdrom_device_info
*cdi
)
1047 const struct cdrom_device_ops
*cdo
= cdi
->ops
;
1049 cd_dbg(CD_OPEN
, "entering open_for_data\n");
1050 /* Check if the driver can report drive status. If it can, we
1051 can do clever things. If it can't, well, we at least tried! */
1052 if (cdo
->drive_status
!= NULL
) {
1053 ret
= cdo
->drive_status(cdi
, CDSL_CURRENT
);
1054 cd_dbg(CD_OPEN
, "drive_status=%d\n", ret
);
1055 if (ret
== CDS_TRAY_OPEN
) {
1056 cd_dbg(CD_OPEN
, "the tray is open...\n");
1057 /* can/may i close it? */
1058 if (CDROM_CAN(CDC_CLOSE_TRAY
) &&
1059 cdi
->options
& CDO_AUTO_CLOSE
) {
1060 cd_dbg(CD_OPEN
, "trying to close the tray\n");
1061 ret
=cdo
->tray_move(cdi
,0);
1063 cd_dbg(CD_OPEN
, "bummer. tried to close the tray but failed.\n");
1064 /* Ignore the error from the low
1065 level driver. We don't care why it
1066 couldn't close the tray. We only care
1067 that there is no disc in the drive,
1068 since that is the _REAL_ problem here.*/
1070 goto clean_up_and_return
;
1073 cd_dbg(CD_OPEN
, "bummer. this drive can't close the tray.\n");
1075 goto clean_up_and_return
;
1077 /* Ok, the door should be closed now.. Check again */
1078 ret
= cdo
->drive_status(cdi
, CDSL_CURRENT
);
1079 if ((ret
== CDS_NO_DISC
) || (ret
==CDS_TRAY_OPEN
)) {
1080 cd_dbg(CD_OPEN
, "bummer. the tray is still not closed.\n");
1081 cd_dbg(CD_OPEN
, "tray might not contain a medium\n");
1083 goto clean_up_and_return
;
1085 cd_dbg(CD_OPEN
, "the tray is now closed\n");
1087 /* the door should be closed now, check for the disc */
1088 ret
= cdo
->drive_status(cdi
, CDSL_CURRENT
);
1089 if (ret
!=CDS_DISC_OK
) {
1091 goto clean_up_and_return
;
1094 cdrom_count_tracks(cdi
, &tracks
);
1095 if (tracks
.error
== CDS_NO_DISC
) {
1096 cd_dbg(CD_OPEN
, "bummer. no disc.\n");
1098 goto clean_up_and_return
;
1100 /* CD-Players which don't use O_NONBLOCK, workman
1101 * for example, need bit CDO_CHECK_TYPE cleared! */
1102 if (tracks
.data
==0) {
1103 if (cdi
->options
& CDO_CHECK_TYPE
) {
1104 /* give people a warning shot, now that CDO_CHECK_TYPE
1105 is the default case! */
1106 cd_dbg(CD_OPEN
, "bummer. wrong media type.\n");
1107 cd_dbg(CD_WARNING
, "pid %d must open device O_NONBLOCK!\n",
1108 (unsigned int)task_pid_nr(current
));
1110 goto clean_up_and_return
;
1113 cd_dbg(CD_OPEN
, "wrong media type, but CDO_CHECK_TYPE not set\n");
1117 cd_dbg(CD_OPEN
, "all seems well, opening the devicen");
1119 /* all seems well, we can open the device */
1120 ret
= cdo
->open(cdi
, 0); /* open for data */
1121 cd_dbg(CD_OPEN
, "opening the device gave me %d\n", ret
);
1122 /* After all this careful checking, we shouldn't have problems
1123 opening the device, but we don't want the device locked if
1124 this somehow fails... */
1126 cd_dbg(CD_OPEN
, "open device failed\n");
1127 goto clean_up_and_return
;
1129 if (CDROM_CAN(CDC_LOCK
) && (cdi
->options
& CDO_LOCK
)) {
1130 cdo
->lock_door(cdi
, 1);
1131 cd_dbg(CD_OPEN
, "door locked\n");
1133 cd_dbg(CD_OPEN
, "device opened successfully\n");
1136 /* Something failed. Try to unlock the drive, because some drivers
1137 (notably ide-cd) lock the drive after every command. This produced
1138 a nasty bug where after mount failed, the drive would remain locked!
1139 This ensures that the drive gets unlocked after a mount fails. This
1140 is a goto to avoid bloating the driver with redundant code. */
1141 clean_up_and_return
:
1142 cd_dbg(CD_OPEN
, "open failed\n");
1143 if (CDROM_CAN(CDC_LOCK
) && cdi
->options
& CDO_LOCK
) {
1144 cdo
->lock_door(cdi
, 0);
1145 cd_dbg(CD_OPEN
, "door unlocked\n");
1150 /* We use the open-option O_NONBLOCK to indicate that the
1151 * purpose of opening is only for subsequent ioctl() calls; no device
1152 * integrity checks are performed.
1154 * We hope that all cd-player programs will adopt this convention. It
1155 * is in their own interest: device control becomes a lot easier
1158 int cdrom_open(struct cdrom_device_info
*cdi
, struct block_device
*bdev
,
1163 cd_dbg(CD_OPEN
, "entering cdrom_open\n");
1165 /* if this was a O_NONBLOCK open and we should honor the flags,
1166 * do a quick open without drive/disc integrity checks. */
1168 if ((mode
& FMODE_NDELAY
) && (cdi
->options
& CDO_USE_FFLAGS
)) {
1169 ret
= cdi
->ops
->open(cdi
, 1);
1171 ret
= open_for_data(cdi
);
1174 if (CDROM_CAN(CDC_GENERIC_PACKET
))
1175 cdrom_mmc3_profile(cdi
);
1176 if (mode
& FMODE_WRITE
) {
1178 if (cdrom_open_write(cdi
))
1180 if (!CDROM_CAN(CDC_RAM
))
1183 cdi
->media_written
= 0;
1190 cd_dbg(CD_OPEN
, "Use count for \"/dev/%s\" now %d\n",
1191 cdi
->name
, cdi
->use_count
);
1194 if (CDROM_CAN(CDC_LOCK
) && cdi
->options
& CDO_LOCK
) {
1195 cdi
->ops
->lock_door(cdi
, 0);
1196 cd_dbg(CD_OPEN
, "door unlocked\n");
1198 cdi
->ops
->release(cdi
);
1204 /* This code is similar to that in open_for_data. The routine is called
1205 whenever an audio play operation is requested.
1207 static int check_for_audio_disc(struct cdrom_device_info
*cdi
,
1208 const struct cdrom_device_ops
*cdo
)
1212 cd_dbg(CD_OPEN
, "entering check_for_audio_disc\n");
1213 if (!(cdi
->options
& CDO_CHECK_TYPE
))
1215 if (cdo
->drive_status
!= NULL
) {
1216 ret
= cdo
->drive_status(cdi
, CDSL_CURRENT
);
1217 cd_dbg(CD_OPEN
, "drive_status=%d\n", ret
);
1218 if (ret
== CDS_TRAY_OPEN
) {
1219 cd_dbg(CD_OPEN
, "the tray is open...\n");
1220 /* can/may i close it? */
1221 if (CDROM_CAN(CDC_CLOSE_TRAY
) &&
1222 cdi
->options
& CDO_AUTO_CLOSE
) {
1223 cd_dbg(CD_OPEN
, "trying to close the tray\n");
1224 ret
=cdo
->tray_move(cdi
,0);
1226 cd_dbg(CD_OPEN
, "bummer. tried to close tray but failed.\n");
1227 /* Ignore the error from the low
1228 level driver. We don't care why it
1229 couldn't close the tray. We only care
1230 that there is no disc in the drive,
1231 since that is the _REAL_ problem here.*/
1235 cd_dbg(CD_OPEN
, "bummer. this driver can't close the tray.\n");
1238 /* Ok, the door should be closed now.. Check again */
1239 ret
= cdo
->drive_status(cdi
, CDSL_CURRENT
);
1240 if ((ret
== CDS_NO_DISC
) || (ret
==CDS_TRAY_OPEN
)) {
1241 cd_dbg(CD_OPEN
, "bummer. the tray is still not closed.\n");
1244 if (ret
!=CDS_DISC_OK
) {
1245 cd_dbg(CD_OPEN
, "bummer. disc isn't ready.\n");
1248 cd_dbg(CD_OPEN
, "the tray is now closed\n");
1251 cdrom_count_tracks(cdi
, &tracks
);
1253 return(tracks
.error
);
1255 if (tracks
.audio
==0)
1256 return -EMEDIUMTYPE
;
1261 void cdrom_release(struct cdrom_device_info
*cdi
, fmode_t mode
)
1263 const struct cdrom_device_ops
*cdo
= cdi
->ops
;
1264 int opened_for_data
;
1266 cd_dbg(CD_CLOSE
, "entering cdrom_release\n");
1268 if (cdi
->use_count
> 0)
1271 if (cdi
->use_count
== 0) {
1272 cd_dbg(CD_CLOSE
, "Use count for \"/dev/%s\" now zero\n",
1274 cdrom_dvd_rw_close_write(cdi
);
1276 if ((cdo
->capability
& CDC_LOCK
) && !cdi
->keeplocked
) {
1277 cd_dbg(CD_CLOSE
, "Unlocking door!\n");
1278 cdo
->lock_door(cdi
, 0);
1282 opened_for_data
= !(cdi
->options
& CDO_USE_FFLAGS
) ||
1283 !(mode
& FMODE_NDELAY
);
1286 * flush cache on last write release
1288 if (CDROM_CAN(CDC_RAM
) && !cdi
->use_count
&& cdi
->for_data
)
1289 cdrom_close_write(cdi
);
1292 if (cdi
->use_count
== 0) { /* last process that closes dev*/
1293 if (opened_for_data
&&
1294 cdi
->options
& CDO_AUTO_EJECT
&& CDROM_CAN(CDC_OPEN_TRAY
))
1295 cdo
->tray_move(cdi
, 1);
1299 static int cdrom_read_mech_status(struct cdrom_device_info
*cdi
,
1300 struct cdrom_changer_info
*buf
)
1302 struct packet_command cgc
;
1303 const struct cdrom_device_ops
*cdo
= cdi
->ops
;
1307 * Sanyo changer isn't spec compliant (doesn't use regular change
1308 * LOAD_UNLOAD command, and it doesn't implement the mech status
1311 if (cdi
->sanyo_slot
) {
1312 buf
->hdr
.nslots
= 3;
1313 buf
->hdr
.curslot
= cdi
->sanyo_slot
== 3 ? 0 : cdi
->sanyo_slot
;
1314 for (length
= 0; length
< 3; length
++) {
1315 buf
->slots
[length
].disc_present
= 1;
1316 buf
->slots
[length
].change
= 0;
1321 length
= sizeof(struct cdrom_mechstat_header
) +
1322 cdi
->capacity
* sizeof(struct cdrom_slot
);
1324 init_cdrom_command(&cgc
, buf
, length
, CGC_DATA_READ
);
1325 cgc
.cmd
[0] = GPCMD_MECHANISM_STATUS
;
1326 cgc
.cmd
[8] = (length
>> 8) & 0xff;
1327 cgc
.cmd
[9] = length
& 0xff;
1328 return cdo
->generic_packet(cdi
, &cgc
);
1331 static int cdrom_slot_status(struct cdrom_device_info
*cdi
, int slot
)
1333 struct cdrom_changer_info
*info
;
1336 cd_dbg(CD_CHANGER
, "entering cdrom_slot_status()\n");
1337 if (cdi
->sanyo_slot
)
1340 info
= kmalloc(sizeof(*info
), GFP_KERNEL
);
1344 if ((ret
= cdrom_read_mech_status(cdi
, info
)))
1347 if (info
->slots
[slot
].disc_present
)
1357 /* Return the number of slots for an ATAPI/SCSI cdrom,
1358 * return 1 if not a changer.
1360 int cdrom_number_of_slots(struct cdrom_device_info
*cdi
)
1364 struct cdrom_changer_info
*info
;
1366 cd_dbg(CD_CHANGER
, "entering cdrom_number_of_slots()\n");
1367 /* cdrom_read_mech_status requires a valid value for capacity: */
1370 info
= kmalloc(sizeof(*info
), GFP_KERNEL
);
1374 if ((status
= cdrom_read_mech_status(cdi
, info
)) == 0)
1375 nslots
= info
->hdr
.nslots
;
1382 /* If SLOT < 0, unload the current slot. Otherwise, try to load SLOT. */
1383 static int cdrom_load_unload(struct cdrom_device_info
*cdi
, int slot
)
1385 struct packet_command cgc
;
1387 cd_dbg(CD_CHANGER
, "entering cdrom_load_unload()\n");
1388 if (cdi
->sanyo_slot
&& slot
< 0)
1391 init_cdrom_command(&cgc
, NULL
, 0, CGC_DATA_NONE
);
1392 cgc
.cmd
[0] = GPCMD_LOAD_UNLOAD
;
1393 cgc
.cmd
[4] = 2 + (slot
>= 0);
1395 cgc
.timeout
= 60 * HZ
;
1397 /* The Sanyo 3 CD changer uses byte 7 of the
1398 GPCMD_TEST_UNIT_READY to command to switch CDs instead of
1399 using the GPCMD_LOAD_UNLOAD opcode. */
1400 if (cdi
->sanyo_slot
&& -1 < slot
) {
1401 cgc
.cmd
[0] = GPCMD_TEST_UNIT_READY
;
1403 cgc
.cmd
[4] = cgc
.cmd
[8] = 0;
1404 cdi
->sanyo_slot
= slot
? slot
: 3;
1407 return cdi
->ops
->generic_packet(cdi
, &cgc
);
1410 static int cdrom_select_disc(struct cdrom_device_info
*cdi
, int slot
)
1412 struct cdrom_changer_info
*info
;
1416 cd_dbg(CD_CHANGER
, "entering cdrom_select_disc()\n");
1417 if (!CDROM_CAN(CDC_SELECT_DISC
))
1418 return -EDRIVE_CANT_DO_THIS
;
1420 if (cdi
->ops
->check_events
)
1421 cdi
->ops
->check_events(cdi
, 0, slot
);
1423 if (slot
== CDSL_NONE
) {
1424 /* set media changed bits, on both queues */
1425 cdi
->mc_flags
= 0x3;
1426 return cdrom_load_unload(cdi
, -1);
1429 info
= kmalloc(sizeof(*info
), GFP_KERNEL
);
1433 if ((ret
= cdrom_read_mech_status(cdi
, info
))) {
1438 curslot
= info
->hdr
.curslot
;
1441 if (cdi
->use_count
> 1 || cdi
->keeplocked
) {
1442 if (slot
== CDSL_CURRENT
) {
1449 /* Specifying CDSL_CURRENT will attempt to load the currnet slot,
1450 which is useful if it had been previously unloaded.
1451 Whether it can or not, it returns the current slot.
1452 Similarly, if slot happens to be the current one, we still
1454 if (slot
== CDSL_CURRENT
)
1457 /* set media changed bits on both queues */
1458 cdi
->mc_flags
= 0x3;
1459 if ((ret
= cdrom_load_unload(cdi
, slot
)))
1466 * As cdrom implements an extra ioctl consumer for media changed
1467 * event, it needs to buffer ->check_events() output, such that event
1468 * is not lost for both the usual VFS and ioctl paths.
1469 * cdi->{vfs|ioctl}_events are used to buffer pending events for each
1472 * XXX: Locking is non-existent. cdi->ops->check_events() can be
1473 * called in parallel and buffering fields are accessed without any
1474 * exclusion. The original media_changed code had the same problem.
1475 * It might be better to simply deprecate CDROM_MEDIA_CHANGED ioctl
1476 * and remove this cruft altogether. It doesn't have much usefulness
1479 static void cdrom_update_events(struct cdrom_device_info
*cdi
,
1480 unsigned int clearing
)
1482 unsigned int events
;
1484 events
= cdi
->ops
->check_events(cdi
, clearing
, CDSL_CURRENT
);
1485 cdi
->vfs_events
|= events
;
1486 cdi
->ioctl_events
|= events
;
1489 unsigned int cdrom_check_events(struct cdrom_device_info
*cdi
,
1490 unsigned int clearing
)
1492 unsigned int events
;
1494 cdrom_update_events(cdi
, clearing
);
1495 events
= cdi
->vfs_events
;
1496 cdi
->vfs_events
= 0;
1499 EXPORT_SYMBOL(cdrom_check_events
);
1501 /* We want to make media_changed accessible to the user through an
1502 * ioctl. The main problem now is that we must double-buffer the
1503 * low-level implementation, to assure that the VFS and the user both
1504 * see a medium change once.
1508 int media_changed(struct cdrom_device_info
*cdi
, int queue
)
1510 unsigned int mask
= (1 << (queue
& 1));
1511 int ret
= !!(cdi
->mc_flags
& mask
);
1514 if (!CDROM_CAN(CDC_MEDIA_CHANGED
))
1517 /* changed since last call? */
1518 BUG_ON(!queue
); /* shouldn't be called from VFS path */
1519 cdrom_update_events(cdi
, DISK_EVENT_MEDIA_CHANGE
);
1520 changed
= cdi
->ioctl_events
& DISK_EVENT_MEDIA_CHANGE
;
1521 cdi
->ioctl_events
= 0;
1524 cdi
->mc_flags
= 0x3; /* set bit on both queues */
1526 cdi
->media_written
= 0;
1529 cdi
->mc_flags
&= ~mask
; /* clear bit */
1533 /* Requests to the low-level drivers will /always/ be done in the
1534 following format convention:
1536 CDROM_LBA: all data-related requests.
1537 CDROM_MSF: all audio-related requests.
1539 However, a low-level implementation is allowed to refuse this
1540 request, and return information in its own favorite format.
1542 It doesn't make sense /at all/ to ask for a play_audio in LBA
1543 format, or ask for multi-session info in MSF format. However, for
1544 backward compatibility these format requests will be satisfied, but
1545 the requests to the low-level drivers will be sanitized in the more
1546 meaningful format indicated above.
1550 void sanitize_format(union cdrom_addr
*addr
,
1551 u_char
* curr
, u_char requested
)
1553 if (*curr
== requested
)
1554 return; /* nothing to be done! */
1555 if (requested
== CDROM_LBA
) {
1556 addr
->lba
= (int) addr
->msf
.frame
+
1557 75 * (addr
->msf
.second
- 2 + 60 * addr
->msf
.minute
);
1558 } else { /* CDROM_MSF */
1559 int lba
= addr
->lba
;
1560 addr
->msf
.frame
= lba
% 75;
1563 addr
->msf
.second
= lba
% 60;
1564 addr
->msf
.minute
= lba
/ 60;
1569 void init_cdrom_command(struct packet_command
*cgc
, void *buf
, int len
,
1572 memset(cgc
, 0, sizeof(struct packet_command
));
1574 memset(buf
, 0, len
);
1575 cgc
->buffer
= (char *) buf
;
1577 cgc
->data_direction
= type
;
1578 cgc
->timeout
= CDROM_DEF_TIMEOUT
;
1583 #define copy_key(dest,src) memcpy((dest), (src), sizeof(dvd_key))
1584 #define copy_chal(dest,src) memcpy((dest), (src), sizeof(dvd_challenge))
1586 static void setup_report_key(struct packet_command
*cgc
, unsigned agid
, unsigned type
)
1588 cgc
->cmd
[0] = GPCMD_REPORT_KEY
;
1589 cgc
->cmd
[10] = type
| (agid
<< 6);
1591 case 0: case 8: case 5: {
1604 cgc
->cmd
[9] = cgc
->buflen
;
1605 cgc
->data_direction
= CGC_DATA_READ
;
1608 static void setup_send_key(struct packet_command
*cgc
, unsigned agid
, unsigned type
)
1610 cgc
->cmd
[0] = GPCMD_SEND_KEY
;
1611 cgc
->cmd
[10] = type
| (agid
<< 6);
1626 cgc
->cmd
[9] = cgc
->buflen
;
1627 cgc
->data_direction
= CGC_DATA_WRITE
;
1630 static int dvd_do_auth(struct cdrom_device_info
*cdi
, dvd_authinfo
*ai
)
1634 struct packet_command cgc
;
1635 const struct cdrom_device_ops
*cdo
= cdi
->ops
;
1636 rpc_state_t rpc_state
;
1638 memset(buf
, 0, sizeof(buf
));
1639 init_cdrom_command(&cgc
, buf
, 0, CGC_DATA_READ
);
1643 case DVD_LU_SEND_AGID
:
1644 cd_dbg(CD_DVD
, "entering DVD_LU_SEND_AGID\n");
1646 setup_report_key(&cgc
, ai
->lsa
.agid
, 0);
1648 if ((ret
= cdo
->generic_packet(cdi
, &cgc
)))
1651 ai
->lsa
.agid
= buf
[7] >> 6;
1652 /* Returning data, let host change state */
1655 case DVD_LU_SEND_KEY1
:
1656 cd_dbg(CD_DVD
, "entering DVD_LU_SEND_KEY1\n");
1657 setup_report_key(&cgc
, ai
->lsk
.agid
, 2);
1659 if ((ret
= cdo
->generic_packet(cdi
, &cgc
)))
1662 copy_key(ai
->lsk
.key
, &buf
[4]);
1663 /* Returning data, let host change state */
1666 case DVD_LU_SEND_CHALLENGE
:
1667 cd_dbg(CD_DVD
, "entering DVD_LU_SEND_CHALLENGE\n");
1668 setup_report_key(&cgc
, ai
->lsc
.agid
, 1);
1670 if ((ret
= cdo
->generic_packet(cdi
, &cgc
)))
1673 copy_chal(ai
->lsc
.chal
, &buf
[4]);
1674 /* Returning data, let host change state */
1678 case DVD_LU_SEND_TITLE_KEY
:
1679 cd_dbg(CD_DVD
, "entering DVD_LU_SEND_TITLE_KEY\n");
1681 setup_report_key(&cgc
, ai
->lstk
.agid
, 4);
1682 cgc
.cmd
[5] = ai
->lstk
.lba
;
1683 cgc
.cmd
[4] = ai
->lstk
.lba
>> 8;
1684 cgc
.cmd
[3] = ai
->lstk
.lba
>> 16;
1685 cgc
.cmd
[2] = ai
->lstk
.lba
>> 24;
1687 if ((ret
= cdo
->generic_packet(cdi
, &cgc
)))
1690 ai
->lstk
.cpm
= (buf
[4] >> 7) & 1;
1691 ai
->lstk
.cp_sec
= (buf
[4] >> 6) & 1;
1692 ai
->lstk
.cgms
= (buf
[4] >> 4) & 3;
1693 copy_key(ai
->lstk
.title_key
, &buf
[5]);
1694 /* Returning data, let host change state */
1697 case DVD_LU_SEND_ASF
:
1698 cd_dbg(CD_DVD
, "entering DVD_LU_SEND_ASF\n");
1699 setup_report_key(&cgc
, ai
->lsasf
.agid
, 5);
1701 if ((ret
= cdo
->generic_packet(cdi
, &cgc
)))
1704 ai
->lsasf
.asf
= buf
[7] & 1;
1707 /* LU data receive (LU changes state) */
1708 case DVD_HOST_SEND_CHALLENGE
:
1709 cd_dbg(CD_DVD
, "entering DVD_HOST_SEND_CHALLENGE\n");
1710 setup_send_key(&cgc
, ai
->hsc
.agid
, 1);
1712 copy_chal(&buf
[4], ai
->hsc
.chal
);
1714 if ((ret
= cdo
->generic_packet(cdi
, &cgc
)))
1717 ai
->type
= DVD_LU_SEND_KEY1
;
1720 case DVD_HOST_SEND_KEY2
:
1721 cd_dbg(CD_DVD
, "entering DVD_HOST_SEND_KEY2\n");
1722 setup_send_key(&cgc
, ai
->hsk
.agid
, 3);
1724 copy_key(&buf
[4], ai
->hsk
.key
);
1726 if ((ret
= cdo
->generic_packet(cdi
, &cgc
))) {
1727 ai
->type
= DVD_AUTH_FAILURE
;
1730 ai
->type
= DVD_AUTH_ESTABLISHED
;
1734 case DVD_INVALIDATE_AGID
:
1736 cd_dbg(CD_DVD
, "entering DVD_INVALIDATE_AGID\n");
1737 setup_report_key(&cgc
, ai
->lsa
.agid
, 0x3f);
1738 if ((ret
= cdo
->generic_packet(cdi
, &cgc
)))
1742 /* Get region settings */
1743 case DVD_LU_SEND_RPC_STATE
:
1744 cd_dbg(CD_DVD
, "entering DVD_LU_SEND_RPC_STATE\n");
1745 setup_report_key(&cgc
, 0, 8);
1746 memset(&rpc_state
, 0, sizeof(rpc_state_t
));
1747 cgc
.buffer
= (char *) &rpc_state
;
1749 if ((ret
= cdo
->generic_packet(cdi
, &cgc
)))
1752 ai
->lrpcs
.type
= rpc_state
.type_code
;
1753 ai
->lrpcs
.vra
= rpc_state
.vra
;
1754 ai
->lrpcs
.ucca
= rpc_state
.ucca
;
1755 ai
->lrpcs
.region_mask
= rpc_state
.region_mask
;
1756 ai
->lrpcs
.rpc_scheme
= rpc_state
.rpc_scheme
;
1759 /* Set region settings */
1760 case DVD_HOST_SEND_RPC_STATE
:
1761 cd_dbg(CD_DVD
, "entering DVD_HOST_SEND_RPC_STATE\n");
1762 setup_send_key(&cgc
, 0, 6);
1764 buf
[4] = ai
->hrpcs
.pdrc
;
1766 if ((ret
= cdo
->generic_packet(cdi
, &cgc
)))
1771 cd_dbg(CD_WARNING
, "Invalid DVD key ioctl (%d)\n", ai
->type
);
1778 static int dvd_read_physical(struct cdrom_device_info
*cdi
, dvd_struct
*s
,
1779 struct packet_command
*cgc
)
1781 unsigned char buf
[21], *base
;
1782 struct dvd_layer
*layer
;
1783 const struct cdrom_device_ops
*cdo
= cdi
->ops
;
1784 int ret
, layer_num
= s
->physical
.layer_num
;
1786 if (layer_num
>= DVD_LAYERS
)
1789 init_cdrom_command(cgc
, buf
, sizeof(buf
), CGC_DATA_READ
);
1790 cgc
->cmd
[0] = GPCMD_READ_DVD_STRUCTURE
;
1791 cgc
->cmd
[6] = layer_num
;
1792 cgc
->cmd
[7] = s
->type
;
1793 cgc
->cmd
[9] = cgc
->buflen
& 0xff;
1796 * refrain from reporting errors on non-existing layers (mainly)
1800 ret
= cdo
->generic_packet(cdi
, cgc
);
1805 layer
= &s
->physical
.layer
[layer_num
];
1808 * place the data... really ugly, but at least we won't have to
1809 * worry about endianess in userspace.
1811 memset(layer
, 0, sizeof(*layer
));
1812 layer
->book_version
= base
[0] & 0xf;
1813 layer
->book_type
= base
[0] >> 4;
1814 layer
->min_rate
= base
[1] & 0xf;
1815 layer
->disc_size
= base
[1] >> 4;
1816 layer
->layer_type
= base
[2] & 0xf;
1817 layer
->track_path
= (base
[2] >> 4) & 1;
1818 layer
->nlayers
= (base
[2] >> 5) & 3;
1819 layer
->track_density
= base
[3] & 0xf;
1820 layer
->linear_density
= base
[3] >> 4;
1821 layer
->start_sector
= base
[5] << 16 | base
[6] << 8 | base
[7];
1822 layer
->end_sector
= base
[9] << 16 | base
[10] << 8 | base
[11];
1823 layer
->end_sector_l0
= base
[13] << 16 | base
[14] << 8 | base
[15];
1824 layer
->bca
= base
[16] >> 7;
1829 static int dvd_read_copyright(struct cdrom_device_info
*cdi
, dvd_struct
*s
,
1830 struct packet_command
*cgc
)
1834 const struct cdrom_device_ops
*cdo
= cdi
->ops
;
1836 init_cdrom_command(cgc
, buf
, sizeof(buf
), CGC_DATA_READ
);
1837 cgc
->cmd
[0] = GPCMD_READ_DVD_STRUCTURE
;
1838 cgc
->cmd
[6] = s
->copyright
.layer_num
;
1839 cgc
->cmd
[7] = s
->type
;
1840 cgc
->cmd
[8] = cgc
->buflen
>> 8;
1841 cgc
->cmd
[9] = cgc
->buflen
& 0xff;
1843 ret
= cdo
->generic_packet(cdi
, cgc
);
1847 s
->copyright
.cpst
= buf
[4];
1848 s
->copyright
.rmi
= buf
[5];
1853 static int dvd_read_disckey(struct cdrom_device_info
*cdi
, dvd_struct
*s
,
1854 struct packet_command
*cgc
)
1858 const struct cdrom_device_ops
*cdo
= cdi
->ops
;
1860 size
= sizeof(s
->disckey
.value
) + 4;
1862 buf
= kmalloc(size
, GFP_KERNEL
);
1866 init_cdrom_command(cgc
, buf
, size
, CGC_DATA_READ
);
1867 cgc
->cmd
[0] = GPCMD_READ_DVD_STRUCTURE
;
1868 cgc
->cmd
[7] = s
->type
;
1869 cgc
->cmd
[8] = size
>> 8;
1870 cgc
->cmd
[9] = size
& 0xff;
1871 cgc
->cmd
[10] = s
->disckey
.agid
<< 6;
1873 ret
= cdo
->generic_packet(cdi
, cgc
);
1875 memcpy(s
->disckey
.value
, &buf
[4], sizeof(s
->disckey
.value
));
1881 static int dvd_read_bca(struct cdrom_device_info
*cdi
, dvd_struct
*s
,
1882 struct packet_command
*cgc
)
1884 int ret
, size
= 4 + 188;
1886 const struct cdrom_device_ops
*cdo
= cdi
->ops
;
1888 buf
= kmalloc(size
, GFP_KERNEL
);
1892 init_cdrom_command(cgc
, buf
, size
, CGC_DATA_READ
);
1893 cgc
->cmd
[0] = GPCMD_READ_DVD_STRUCTURE
;
1894 cgc
->cmd
[7] = s
->type
;
1895 cgc
->cmd
[9] = cgc
->buflen
& 0xff;
1897 ret
= cdo
->generic_packet(cdi
, cgc
);
1901 s
->bca
.len
= buf
[0] << 8 | buf
[1];
1902 if (s
->bca
.len
< 12 || s
->bca
.len
> 188) {
1903 cd_dbg(CD_WARNING
, "Received invalid BCA length (%d)\n",
1908 memcpy(s
->bca
.value
, &buf
[4], s
->bca
.len
);
1915 static int dvd_read_manufact(struct cdrom_device_info
*cdi
, dvd_struct
*s
,
1916 struct packet_command
*cgc
)
1920 const struct cdrom_device_ops
*cdo
= cdi
->ops
;
1922 size
= sizeof(s
->manufact
.value
) + 4;
1924 buf
= kmalloc(size
, GFP_KERNEL
);
1928 init_cdrom_command(cgc
, buf
, size
, CGC_DATA_READ
);
1929 cgc
->cmd
[0] = GPCMD_READ_DVD_STRUCTURE
;
1930 cgc
->cmd
[7] = s
->type
;
1931 cgc
->cmd
[8] = size
>> 8;
1932 cgc
->cmd
[9] = size
& 0xff;
1934 ret
= cdo
->generic_packet(cdi
, cgc
);
1938 s
->manufact
.len
= buf
[0] << 8 | buf
[1];
1939 if (s
->manufact
.len
< 0) {
1940 cd_dbg(CD_WARNING
, "Received invalid manufacture info length (%d)\n",
1944 if (s
->manufact
.len
> 2048) {
1945 cd_dbg(CD_WARNING
, "Received invalid manufacture info length (%d): truncating to 2048\n",
1947 s
->manufact
.len
= 2048;
1949 memcpy(s
->manufact
.value
, &buf
[4], s
->manufact
.len
);
1957 static int dvd_read_struct(struct cdrom_device_info
*cdi
, dvd_struct
*s
,
1958 struct packet_command
*cgc
)
1961 case DVD_STRUCT_PHYSICAL
:
1962 return dvd_read_physical(cdi
, s
, cgc
);
1964 case DVD_STRUCT_COPYRIGHT
:
1965 return dvd_read_copyright(cdi
, s
, cgc
);
1967 case DVD_STRUCT_DISCKEY
:
1968 return dvd_read_disckey(cdi
, s
, cgc
);
1970 case DVD_STRUCT_BCA
:
1971 return dvd_read_bca(cdi
, s
, cgc
);
1973 case DVD_STRUCT_MANUFACT
:
1974 return dvd_read_manufact(cdi
, s
, cgc
);
1977 cd_dbg(CD_WARNING
, ": Invalid DVD structure read requested (%d)\n",
1983 int cdrom_mode_sense(struct cdrom_device_info
*cdi
,
1984 struct packet_command
*cgc
,
1985 int page_code
, int page_control
)
1987 const struct cdrom_device_ops
*cdo
= cdi
->ops
;
1989 memset(cgc
->cmd
, 0, sizeof(cgc
->cmd
));
1991 cgc
->cmd
[0] = GPCMD_MODE_SENSE_10
;
1992 cgc
->cmd
[2] = page_code
| (page_control
<< 6);
1993 cgc
->cmd
[7] = cgc
->buflen
>> 8;
1994 cgc
->cmd
[8] = cgc
->buflen
& 0xff;
1995 cgc
->data_direction
= CGC_DATA_READ
;
1996 return cdo
->generic_packet(cdi
, cgc
);
1999 int cdrom_mode_select(struct cdrom_device_info
*cdi
,
2000 struct packet_command
*cgc
)
2002 const struct cdrom_device_ops
*cdo
= cdi
->ops
;
2004 memset(cgc
->cmd
, 0, sizeof(cgc
->cmd
));
2005 memset(cgc
->buffer
, 0, 2);
2006 cgc
->cmd
[0] = GPCMD_MODE_SELECT_10
;
2007 cgc
->cmd
[1] = 0x10; /* PF */
2008 cgc
->cmd
[7] = cgc
->buflen
>> 8;
2009 cgc
->cmd
[8] = cgc
->buflen
& 0xff;
2010 cgc
->data_direction
= CGC_DATA_WRITE
;
2011 return cdo
->generic_packet(cdi
, cgc
);
2014 static int cdrom_read_subchannel(struct cdrom_device_info
*cdi
,
2015 struct cdrom_subchnl
*subchnl
, int mcn
)
2017 const struct cdrom_device_ops
*cdo
= cdi
->ops
;
2018 struct packet_command cgc
;
2022 init_cdrom_command(&cgc
, buffer
, 16, CGC_DATA_READ
);
2023 cgc
.cmd
[0] = GPCMD_READ_SUBCHANNEL
;
2024 cgc
.cmd
[1] = subchnl
->cdsc_format
;/* MSF or LBA addressing */
2025 cgc
.cmd
[2] = 0x40; /* request subQ data */
2026 cgc
.cmd
[3] = mcn
? 2 : 1;
2029 if ((ret
= cdo
->generic_packet(cdi
, &cgc
)))
2032 subchnl
->cdsc_audiostatus
= cgc
.buffer
[1];
2033 subchnl
->cdsc_ctrl
= cgc
.buffer
[5] & 0xf;
2034 subchnl
->cdsc_trk
= cgc
.buffer
[6];
2035 subchnl
->cdsc_ind
= cgc
.buffer
[7];
2037 if (subchnl
->cdsc_format
== CDROM_LBA
) {
2038 subchnl
->cdsc_absaddr
.lba
= ((cgc
.buffer
[8] << 24) |
2039 (cgc
.buffer
[9] << 16) |
2040 (cgc
.buffer
[10] << 8) |
2042 subchnl
->cdsc_reladdr
.lba
= ((cgc
.buffer
[12] << 24) |
2043 (cgc
.buffer
[13] << 16) |
2044 (cgc
.buffer
[14] << 8) |
2047 subchnl
->cdsc_reladdr
.msf
.minute
= cgc
.buffer
[13];
2048 subchnl
->cdsc_reladdr
.msf
.second
= cgc
.buffer
[14];
2049 subchnl
->cdsc_reladdr
.msf
.frame
= cgc
.buffer
[15];
2050 subchnl
->cdsc_absaddr
.msf
.minute
= cgc
.buffer
[9];
2051 subchnl
->cdsc_absaddr
.msf
.second
= cgc
.buffer
[10];
2052 subchnl
->cdsc_absaddr
.msf
.frame
= cgc
.buffer
[11];
2059 * Specific READ_10 interface
2061 static int cdrom_read_cd(struct cdrom_device_info
*cdi
,
2062 struct packet_command
*cgc
, int lba
,
2063 int blocksize
, int nblocks
)
2065 const struct cdrom_device_ops
*cdo
= cdi
->ops
;
2067 memset(&cgc
->cmd
, 0, sizeof(cgc
->cmd
));
2068 cgc
->cmd
[0] = GPCMD_READ_10
;
2069 cgc
->cmd
[2] = (lba
>> 24) & 0xff;
2070 cgc
->cmd
[3] = (lba
>> 16) & 0xff;
2071 cgc
->cmd
[4] = (lba
>> 8) & 0xff;
2072 cgc
->cmd
[5] = lba
& 0xff;
2073 cgc
->cmd
[6] = (nblocks
>> 16) & 0xff;
2074 cgc
->cmd
[7] = (nblocks
>> 8) & 0xff;
2075 cgc
->cmd
[8] = nblocks
& 0xff;
2076 cgc
->buflen
= blocksize
* nblocks
;
2077 return cdo
->generic_packet(cdi
, cgc
);
2080 /* very generic interface for reading the various types of blocks */
2081 static int cdrom_read_block(struct cdrom_device_info
*cdi
,
2082 struct packet_command
*cgc
,
2083 int lba
, int nblocks
, int format
, int blksize
)
2085 const struct cdrom_device_ops
*cdo
= cdi
->ops
;
2087 memset(&cgc
->cmd
, 0, sizeof(cgc
->cmd
));
2088 cgc
->cmd
[0] = GPCMD_READ_CD
;
2089 /* expected sector size - cdda,mode1,etc. */
2090 cgc
->cmd
[1] = format
<< 2;
2091 /* starting address */
2092 cgc
->cmd
[2] = (lba
>> 24) & 0xff;
2093 cgc
->cmd
[3] = (lba
>> 16) & 0xff;
2094 cgc
->cmd
[4] = (lba
>> 8) & 0xff;
2095 cgc
->cmd
[5] = lba
& 0xff;
2096 /* number of blocks */
2097 cgc
->cmd
[6] = (nblocks
>> 16) & 0xff;
2098 cgc
->cmd
[7] = (nblocks
>> 8) & 0xff;
2099 cgc
->cmd
[8] = nblocks
& 0xff;
2100 cgc
->buflen
= blksize
* nblocks
;
2102 /* set the header info returned */
2104 case CD_FRAMESIZE_RAW0
: cgc
->cmd
[9] = 0x58; break;
2105 case CD_FRAMESIZE_RAW1
: cgc
->cmd
[9] = 0x78; break;
2106 case CD_FRAMESIZE_RAW
: cgc
->cmd
[9] = 0xf8; break;
2107 default : cgc
->cmd
[9] = 0x10;
2110 return cdo
->generic_packet(cdi
, cgc
);
2113 static int cdrom_read_cdda_old(struct cdrom_device_info
*cdi
, __u8 __user
*ubuf
,
2114 int lba
, int nframes
)
2116 struct packet_command cgc
;
2120 cdi
->last_sense
= 0;
2122 memset(&cgc
, 0, sizeof(cgc
));
2125 * start with will ra.nframes size, back down if alloc fails
2129 cgc
.buffer
= kmalloc_array(nr
, CD_FRAMESIZE_RAW
, GFP_KERNEL
);
2139 cgc
.data_direction
= CGC_DATA_READ
;
2140 while (nframes
> 0) {
2144 ret
= cdrom_read_block(cdi
, &cgc
, lba
, nr
, 1, CD_FRAMESIZE_RAW
);
2147 if (copy_to_user(ubuf
, cgc
.buffer
, CD_FRAMESIZE_RAW
* nr
)) {
2151 ubuf
+= CD_FRAMESIZE_RAW
* nr
;
2159 static int cdrom_read_cdda_bpc(struct cdrom_device_info
*cdi
, __u8 __user
*ubuf
,
2160 int lba
, int nframes
)
2162 struct request_queue
*q
= cdi
->disk
->queue
;
2164 struct scsi_request
*req
;
2172 if (!blk_queue_scsi_passthrough(q
)) {
2174 "Attempt read CDDA info through a non-SCSI queue\n");
2178 cdi
->last_sense
= 0;
2182 if (cdi
->cdda_method
== CDDA_BPC_SINGLE
)
2184 if (nr
* CD_FRAMESIZE_RAW
> (queue_max_sectors(q
) << 9))
2185 nr
= (queue_max_sectors(q
) << 9) / CD_FRAMESIZE_RAW
;
2187 len
= nr
* CD_FRAMESIZE_RAW
;
2189 rq
= blk_get_request(q
, REQ_OP_SCSI_IN
, 0);
2196 ret
= blk_rq_map_user(q
, rq
, NULL
, ubuf
, len
, GFP_KERNEL
);
2198 blk_put_request(rq
);
2202 req
->cmd
[0] = GPCMD_READ_CD
;
2203 req
->cmd
[1] = 1 << 2;
2204 req
->cmd
[2] = (lba
>> 24) & 0xff;
2205 req
->cmd
[3] = (lba
>> 16) & 0xff;
2206 req
->cmd
[4] = (lba
>> 8) & 0xff;
2207 req
->cmd
[5] = lba
& 0xff;
2208 req
->cmd
[6] = (nr
>> 16) & 0xff;
2209 req
->cmd
[7] = (nr
>> 8) & 0xff;
2210 req
->cmd
[8] = nr
& 0xff;
2214 rq
->timeout
= 60 * HZ
;
2217 blk_execute_rq(cdi
->disk
, rq
, 0);
2218 if (scsi_req(rq
)->result
) {
2219 struct scsi_sense_hdr sshdr
;
2222 scsi_normalize_sense(req
->sense
, req
->sense_len
,
2224 cdi
->last_sense
= sshdr
.sense_key
;
2227 if (blk_rq_unmap_user(bio
))
2229 blk_put_request(rq
);
2242 static int cdrom_read_cdda(struct cdrom_device_info
*cdi
, __u8 __user
*ubuf
,
2243 int lba
, int nframes
)
2247 if (cdi
->cdda_method
== CDDA_OLD
)
2248 return cdrom_read_cdda_old(cdi
, ubuf
, lba
, nframes
);
2252 * for anything else than success and io error, we need to retry
2254 ret
= cdrom_read_cdda_bpc(cdi
, ubuf
, lba
, nframes
);
2255 if (!ret
|| ret
!= -EIO
)
2259 * I've seen drives get sense 4/8/3 udma crc errors on multi
2260 * frame dma, so drop to single frame dma if we need to
2262 if (cdi
->cdda_method
== CDDA_BPC_FULL
&& nframes
> 1) {
2263 pr_info("dropping to single frame dma\n");
2264 cdi
->cdda_method
= CDDA_BPC_SINGLE
;
2269 * so we have an io error of some sort with multi frame dma. if the
2270 * condition wasn't a hardware error
2271 * problems, not for any error
2273 if (cdi
->last_sense
!= 0x04 && cdi
->last_sense
!= 0x0b)
2276 pr_info("dropping to old style cdda (sense=%x)\n", cdi
->last_sense
);
2277 cdi
->cdda_method
= CDDA_OLD
;
2278 return cdrom_read_cdda_old(cdi
, ubuf
, lba
, nframes
);
2281 int cdrom_multisession(struct cdrom_device_info
*cdi
,
2282 struct cdrom_multisession
*info
)
2284 u8 requested_format
;
2287 if (!(cdi
->ops
->capability
& CDC_MULTI_SESSION
))
2290 requested_format
= info
->addr_format
;
2291 if (requested_format
!= CDROM_MSF
&& requested_format
!= CDROM_LBA
)
2293 info
->addr_format
= CDROM_LBA
;
2295 ret
= cdi
->ops
->get_last_session(cdi
, info
);
2297 sanitize_format(&info
->addr
, &info
->addr_format
,
2301 EXPORT_SYMBOL_GPL(cdrom_multisession
);
2303 static int cdrom_ioctl_multisession(struct cdrom_device_info
*cdi
,
2306 struct cdrom_multisession info
;
2309 cd_dbg(CD_DO_IOCTL
, "entering CDROMMULTISESSION\n");
2311 if (copy_from_user(&info
, argp
, sizeof(info
)))
2313 ret
= cdrom_multisession(cdi
, &info
);
2316 if (copy_to_user(argp
, &info
, sizeof(info
)))
2319 cd_dbg(CD_DO_IOCTL
, "CDROMMULTISESSION successful\n");
2323 static int cdrom_ioctl_eject(struct cdrom_device_info
*cdi
)
2325 cd_dbg(CD_DO_IOCTL
, "entering CDROMEJECT\n");
2327 if (!CDROM_CAN(CDC_OPEN_TRAY
))
2329 if (cdi
->use_count
!= 1 || cdi
->keeplocked
)
2331 if (CDROM_CAN(CDC_LOCK
)) {
2332 int ret
= cdi
->ops
->lock_door(cdi
, 0);
2337 return cdi
->ops
->tray_move(cdi
, 1);
2340 static int cdrom_ioctl_closetray(struct cdrom_device_info
*cdi
)
2342 cd_dbg(CD_DO_IOCTL
, "entering CDROMCLOSETRAY\n");
2344 if (!CDROM_CAN(CDC_CLOSE_TRAY
))
2346 return cdi
->ops
->tray_move(cdi
, 0);
2349 static int cdrom_ioctl_eject_sw(struct cdrom_device_info
*cdi
,
2352 cd_dbg(CD_DO_IOCTL
, "entering CDROMEJECT_SW\n");
2354 if (!CDROM_CAN(CDC_OPEN_TRAY
))
2356 if (cdi
->keeplocked
)
2359 cdi
->options
&= ~(CDO_AUTO_CLOSE
| CDO_AUTO_EJECT
);
2361 cdi
->options
|= CDO_AUTO_CLOSE
| CDO_AUTO_EJECT
;
2365 static int cdrom_ioctl_media_changed(struct cdrom_device_info
*cdi
,
2368 struct cdrom_changer_info
*info
;
2371 cd_dbg(CD_DO_IOCTL
, "entering CDROM_MEDIA_CHANGED\n");
2373 if (!CDROM_CAN(CDC_MEDIA_CHANGED
))
2376 /* cannot select disc or select current disc */
2377 if (!CDROM_CAN(CDC_SELECT_DISC
) || arg
== CDSL_CURRENT
)
2378 return media_changed(cdi
, 1);
2380 if (arg
>= cdi
->capacity
)
2383 info
= kmalloc(sizeof(*info
), GFP_KERNEL
);
2387 ret
= cdrom_read_mech_status(cdi
, info
);
2389 ret
= info
->slots
[arg
].change
;
2394 static int cdrom_ioctl_set_options(struct cdrom_device_info
*cdi
,
2397 cd_dbg(CD_DO_IOCTL
, "entering CDROM_SET_OPTIONS\n");
2400 * Options need to be in sync with capability.
2401 * Too late for that, so we have to check each one separately.
2404 case CDO_USE_FFLAGS
:
2405 case CDO_CHECK_TYPE
:
2408 if (!CDROM_CAN(CDC_LOCK
))
2412 return cdi
->options
;
2413 /* default is basically CDO_[AUTO_CLOSE|AUTO_EJECT] */
2415 if (!CDROM_CAN(arg
))
2418 cdi
->options
|= (int) arg
;
2419 return cdi
->options
;
2422 static int cdrom_ioctl_clear_options(struct cdrom_device_info
*cdi
,
2425 cd_dbg(CD_DO_IOCTL
, "entering CDROM_CLEAR_OPTIONS\n");
2427 cdi
->options
&= ~(int) arg
;
2428 return cdi
->options
;
2431 static int cdrom_ioctl_select_speed(struct cdrom_device_info
*cdi
,
2434 cd_dbg(CD_DO_IOCTL
, "entering CDROM_SELECT_SPEED\n");
2436 if (!CDROM_CAN(CDC_SELECT_SPEED
))
2438 return cdi
->ops
->select_speed(cdi
, arg
);
2441 static int cdrom_ioctl_select_disc(struct cdrom_device_info
*cdi
,
2444 cd_dbg(CD_DO_IOCTL
, "entering CDROM_SELECT_DISC\n");
2446 if (!CDROM_CAN(CDC_SELECT_DISC
))
2449 if (arg
!= CDSL_CURRENT
&& arg
!= CDSL_NONE
) {
2450 if (arg
>= cdi
->capacity
)
2455 * ->select_disc is a hook to allow a driver-specific way of
2456 * seleting disc. However, since there is no equivalent hook for
2457 * cdrom_slot_status this may not actually be useful...
2459 if (cdi
->ops
->select_disc
)
2460 return cdi
->ops
->select_disc(cdi
, arg
);
2462 cd_dbg(CD_CHANGER
, "Using generic cdrom_select_disc()\n");
2463 return cdrom_select_disc(cdi
, arg
);
2466 static int cdrom_ioctl_reset(struct cdrom_device_info
*cdi
,
2467 struct block_device
*bdev
)
2469 cd_dbg(CD_DO_IOCTL
, "entering CDROM_RESET\n");
2471 if (!capable(CAP_SYS_ADMIN
))
2473 if (!CDROM_CAN(CDC_RESET
))
2475 invalidate_bdev(bdev
);
2476 return cdi
->ops
->reset(cdi
);
2479 static int cdrom_ioctl_lock_door(struct cdrom_device_info
*cdi
,
2482 cd_dbg(CD_DO_IOCTL
, "%socking door\n", arg
? "L" : "Unl");
2484 if (!CDROM_CAN(CDC_LOCK
))
2485 return -EDRIVE_CANT_DO_THIS
;
2487 cdi
->keeplocked
= arg
? 1 : 0;
2490 * Don't unlock the door on multiple opens by default, but allow
2493 if (cdi
->use_count
!= 1 && !arg
&& !capable(CAP_SYS_ADMIN
))
2495 return cdi
->ops
->lock_door(cdi
, arg
);
2498 static int cdrom_ioctl_debug(struct cdrom_device_info
*cdi
,
2501 cd_dbg(CD_DO_IOCTL
, "%sabling debug\n", arg
? "En" : "Dis");
2503 if (!capable(CAP_SYS_ADMIN
))
2505 debug
= arg
? 1 : 0;
2509 static int cdrom_ioctl_get_capability(struct cdrom_device_info
*cdi
)
2511 cd_dbg(CD_DO_IOCTL
, "entering CDROM_GET_CAPABILITY\n");
2512 return (cdi
->ops
->capability
& ~cdi
->mask
);
2516 * The following function is implemented, although very few audio
2517 * discs give Universal Product Code information, which should just be
2518 * the Medium Catalog Number on the box. Note, that the way the code
2519 * is written on the CD is /not/ uniform across all discs!
2521 static int cdrom_ioctl_get_mcn(struct cdrom_device_info
*cdi
,
2524 struct cdrom_mcn mcn
;
2527 cd_dbg(CD_DO_IOCTL
, "entering CDROM_GET_MCN\n");
2529 if (!(cdi
->ops
->capability
& CDC_MCN
))
2531 ret
= cdi
->ops
->get_mcn(cdi
, &mcn
);
2535 if (copy_to_user(argp
, &mcn
, sizeof(mcn
)))
2537 cd_dbg(CD_DO_IOCTL
, "CDROM_GET_MCN successful\n");
2541 static int cdrom_ioctl_drive_status(struct cdrom_device_info
*cdi
,
2544 cd_dbg(CD_DO_IOCTL
, "entering CDROM_DRIVE_STATUS\n");
2546 if (!(cdi
->ops
->capability
& CDC_DRIVE_STATUS
))
2548 if (!CDROM_CAN(CDC_SELECT_DISC
) ||
2549 (arg
== CDSL_CURRENT
|| arg
== CDSL_NONE
))
2550 return cdi
->ops
->drive_status(cdi
, CDSL_CURRENT
);
2551 if (arg
>= cdi
->capacity
)
2553 return cdrom_slot_status(cdi
, arg
);
2557 * Ok, this is where problems start. The current interface for the
2558 * CDROM_DISC_STATUS ioctl is flawed. It makes the false assumption that
2559 * CDs are all CDS_DATA_1 or all CDS_AUDIO, etc. Unfortunately, while this
2560 * is often the case, it is also very common for CDs to have some tracks
2561 * with data, and some tracks with audio. Just because I feel like it,
2562 * I declare the following to be the best way to cope. If the CD has ANY
2563 * data tracks on it, it will be returned as a data CD. If it has any XA
2564 * tracks, I will return it as that. Now I could simplify this interface
2565 * by combining these returns with the above, but this more clearly
2566 * demonstrates the problem with the current interface. Too bad this
2567 * wasn't designed to use bitmasks... -Erik
2569 * Well, now we have the option CDS_MIXED: a mixed-type CD.
2570 * User level programmers might feel the ioctl is not very useful.
2573 static int cdrom_ioctl_disc_status(struct cdrom_device_info
*cdi
)
2577 cd_dbg(CD_DO_IOCTL
, "entering CDROM_DISC_STATUS\n");
2579 cdrom_count_tracks(cdi
, &tracks
);
2581 return tracks
.error
;
2583 /* Policy mode on */
2584 if (tracks
.audio
> 0) {
2585 if (!tracks
.data
&& !tracks
.cdi
&& !tracks
.xa
)
2595 if (tracks
.data
> 0)
2597 /* Policy mode off */
2599 cd_dbg(CD_WARNING
, "This disc doesn't have any tracks I recognize!\n");
2603 static int cdrom_ioctl_changer_nslots(struct cdrom_device_info
*cdi
)
2605 cd_dbg(CD_DO_IOCTL
, "entering CDROM_CHANGER_NSLOTS\n");
2606 return cdi
->capacity
;
2609 static int cdrom_ioctl_get_subchnl(struct cdrom_device_info
*cdi
,
2612 struct cdrom_subchnl q
;
2616 /* cd_dbg(CD_DO_IOCTL,"entering CDROMSUBCHNL\n");*/
2618 if (copy_from_user(&q
, argp
, sizeof(q
)))
2621 requested
= q
.cdsc_format
;
2622 if (requested
!= CDROM_MSF
&& requested
!= CDROM_LBA
)
2624 q
.cdsc_format
= CDROM_MSF
;
2626 ret
= cdi
->ops
->audio_ioctl(cdi
, CDROMSUBCHNL
, &q
);
2630 back
= q
.cdsc_format
; /* local copy */
2631 sanitize_format(&q
.cdsc_absaddr
, &back
, requested
);
2632 sanitize_format(&q
.cdsc_reladdr
, &q
.cdsc_format
, requested
);
2634 if (copy_to_user(argp
, &q
, sizeof(q
)))
2636 /* cd_dbg(CD_DO_IOCTL, "CDROMSUBCHNL successful\n"); */
2640 static int cdrom_ioctl_read_tochdr(struct cdrom_device_info
*cdi
,
2643 struct cdrom_tochdr header
;
2646 /* cd_dbg(CD_DO_IOCTL, "entering CDROMREADTOCHDR\n"); */
2648 if (copy_from_user(&header
, argp
, sizeof(header
)))
2651 ret
= cdi
->ops
->audio_ioctl(cdi
, CDROMREADTOCHDR
, &header
);
2655 if (copy_to_user(argp
, &header
, sizeof(header
)))
2657 /* cd_dbg(CD_DO_IOCTL, "CDROMREADTOCHDR successful\n"); */
2661 int cdrom_read_tocentry(struct cdrom_device_info
*cdi
,
2662 struct cdrom_tocentry
*entry
)
2664 u8 requested_format
= entry
->cdte_format
;
2667 if (requested_format
!= CDROM_MSF
&& requested_format
!= CDROM_LBA
)
2670 /* make interface to low-level uniform */
2671 entry
->cdte_format
= CDROM_MSF
;
2672 ret
= cdi
->ops
->audio_ioctl(cdi
, CDROMREADTOCENTRY
, entry
);
2674 sanitize_format(&entry
->cdte_addr
, &entry
->cdte_format
,
2678 EXPORT_SYMBOL_GPL(cdrom_read_tocentry
);
2680 static int cdrom_ioctl_read_tocentry(struct cdrom_device_info
*cdi
,
2683 struct cdrom_tocentry entry
;
2686 if (copy_from_user(&entry
, argp
, sizeof(entry
)))
2688 ret
= cdrom_read_tocentry(cdi
, &entry
);
2689 if (!ret
&& copy_to_user(argp
, &entry
, sizeof(entry
)))
2694 static int cdrom_ioctl_play_msf(struct cdrom_device_info
*cdi
,
2697 struct cdrom_msf msf
;
2699 cd_dbg(CD_DO_IOCTL
, "entering CDROMPLAYMSF\n");
2701 if (!CDROM_CAN(CDC_PLAY_AUDIO
))
2703 if (copy_from_user(&msf
, argp
, sizeof(msf
)))
2705 return cdi
->ops
->audio_ioctl(cdi
, CDROMPLAYMSF
, &msf
);
2708 static int cdrom_ioctl_play_trkind(struct cdrom_device_info
*cdi
,
2714 cd_dbg(CD_DO_IOCTL
, "entering CDROMPLAYTRKIND\n");
2716 if (!CDROM_CAN(CDC_PLAY_AUDIO
))
2718 if (copy_from_user(&ti
, argp
, sizeof(ti
)))
2721 ret
= check_for_audio_disc(cdi
, cdi
->ops
);
2724 return cdi
->ops
->audio_ioctl(cdi
, CDROMPLAYTRKIND
, &ti
);
2726 static int cdrom_ioctl_volctrl(struct cdrom_device_info
*cdi
,
2729 struct cdrom_volctrl volume
;
2731 cd_dbg(CD_DO_IOCTL
, "entering CDROMVOLCTRL\n");
2733 if (!CDROM_CAN(CDC_PLAY_AUDIO
))
2735 if (copy_from_user(&volume
, argp
, sizeof(volume
)))
2737 return cdi
->ops
->audio_ioctl(cdi
, CDROMVOLCTRL
, &volume
);
2740 static int cdrom_ioctl_volread(struct cdrom_device_info
*cdi
,
2743 struct cdrom_volctrl volume
;
2746 cd_dbg(CD_DO_IOCTL
, "entering CDROMVOLREAD\n");
2748 if (!CDROM_CAN(CDC_PLAY_AUDIO
))
2751 ret
= cdi
->ops
->audio_ioctl(cdi
, CDROMVOLREAD
, &volume
);
2755 if (copy_to_user(argp
, &volume
, sizeof(volume
)))
2760 static int cdrom_ioctl_audioctl(struct cdrom_device_info
*cdi
,
2765 cd_dbg(CD_DO_IOCTL
, "doing audio ioctl (start/stop/pause/resume)\n");
2767 if (!CDROM_CAN(CDC_PLAY_AUDIO
))
2769 ret
= check_for_audio_disc(cdi
, cdi
->ops
);
2772 return cdi
->ops
->audio_ioctl(cdi
, cmd
, NULL
);
2776 * Required when we need to use READ_10 to issue other than 2048 block
2779 static int cdrom_switch_blocksize(struct cdrom_device_info
*cdi
, int size
)
2781 const struct cdrom_device_ops
*cdo
= cdi
->ops
;
2782 struct packet_command cgc
;
2783 struct modesel_head mh
;
2785 memset(&mh
, 0, sizeof(mh
));
2786 mh
.block_desc_length
= 0x08;
2787 mh
.block_length_med
= (size
>> 8) & 0xff;
2788 mh
.block_length_lo
= size
& 0xff;
2790 memset(&cgc
, 0, sizeof(cgc
));
2792 cgc
.cmd
[1] = 1 << 4;
2794 cgc
.buflen
= sizeof(mh
);
2795 cgc
.buffer
= (char *) &mh
;
2796 cgc
.data_direction
= CGC_DATA_WRITE
;
2797 mh
.block_desc_length
= 0x08;
2798 mh
.block_length_med
= (size
>> 8) & 0xff;
2799 mh
.block_length_lo
= size
& 0xff;
2801 return cdo
->generic_packet(cdi
, &cgc
);
2804 static int cdrom_get_track_info(struct cdrom_device_info
*cdi
,
2805 __u16 track
, __u8 type
, track_information
*ti
)
2807 const struct cdrom_device_ops
*cdo
= cdi
->ops
;
2808 struct packet_command cgc
;
2811 init_cdrom_command(&cgc
, ti
, 8, CGC_DATA_READ
);
2812 cgc
.cmd
[0] = GPCMD_READ_TRACK_RZONE_INFO
;
2813 cgc
.cmd
[1] = type
& 3;
2814 cgc
.cmd
[4] = (track
& 0xff00) >> 8;
2815 cgc
.cmd
[5] = track
& 0xff;
2819 ret
= cdo
->generic_packet(cdi
, &cgc
);
2823 buflen
= be16_to_cpu(ti
->track_information_length
) +
2824 sizeof(ti
->track_information_length
);
2826 if (buflen
> sizeof(track_information
))
2827 buflen
= sizeof(track_information
);
2829 cgc
.cmd
[8] = cgc
.buflen
= buflen
;
2830 ret
= cdo
->generic_packet(cdi
, &cgc
);
2834 /* return actual fill size */
2838 /* return the last written block on the CD-R media. this is for the udf
2840 int cdrom_get_last_written(struct cdrom_device_info
*cdi
, long *last_written
)
2842 struct cdrom_tocentry toc
;
2843 disc_information di
;
2844 track_information ti
;
2846 int ret
= -1, ti_size
;
2848 if (!CDROM_CAN(CDC_GENERIC_PACKET
))
2851 ret
= cdrom_get_disc_info(cdi
, &di
);
2852 if (ret
< (int)(offsetof(typeof(di
), last_track_lsb
)
2853 + sizeof(di
.last_track_lsb
)))
2856 /* if unit didn't return msb, it's zeroed by cdrom_get_disc_info */
2857 last_track
= (di
.last_track_msb
<< 8) | di
.last_track_lsb
;
2858 ti_size
= cdrom_get_track_info(cdi
, last_track
, 1, &ti
);
2859 if (ti_size
< (int)offsetof(typeof(ti
), track_start
))
2862 /* if this track is blank, try the previous. */
2864 if (last_track
== 1)
2867 ti_size
= cdrom_get_track_info(cdi
, last_track
, 1, &ti
);
2870 if (ti_size
< (int)(offsetof(typeof(ti
), track_size
)
2871 + sizeof(ti
.track_size
)))
2874 /* if last recorded field is valid, return it. */
2875 if (ti
.lra_v
&& ti_size
>= (int)(offsetof(typeof(ti
), last_rec_address
)
2876 + sizeof(ti
.last_rec_address
))) {
2877 *last_written
= be32_to_cpu(ti
.last_rec_address
);
2879 /* make it up instead */
2880 *last_written
= be32_to_cpu(ti
.track_start
) +
2881 be32_to_cpu(ti
.track_size
);
2883 *last_written
-= (be32_to_cpu(ti
.free_blocks
) + 7);
2887 /* this is where we end up if the drive either can't do a
2888 GPCMD_READ_DISC_INFO or GPCMD_READ_TRACK_RZONE_INFO or if
2889 it doesn't give enough information or fails. then we return
2890 the toc contents. */
2892 if (!CDROM_CAN(CDC_PLAY_AUDIO
))
2895 toc
.cdte_format
= CDROM_MSF
;
2896 toc
.cdte_track
= CDROM_LEADOUT
;
2897 if ((ret
= cdi
->ops
->audio_ioctl(cdi
, CDROMREADTOCENTRY
, &toc
)))
2899 sanitize_format(&toc
.cdte_addr
, &toc
.cdte_format
, CDROM_LBA
);
2900 *last_written
= toc
.cdte_addr
.lba
;
2904 /* return the next writable block. also for udf file system. */
2905 static int cdrom_get_next_writable(struct cdrom_device_info
*cdi
,
2906 long *next_writable
)
2908 disc_information di
;
2909 track_information ti
;
2913 if (!CDROM_CAN(CDC_GENERIC_PACKET
))
2914 goto use_last_written
;
2916 ret
= cdrom_get_disc_info(cdi
, &di
);
2917 if (ret
< 0 || ret
< offsetof(typeof(di
), last_track_lsb
)
2918 + sizeof(di
.last_track_lsb
))
2919 goto use_last_written
;
2921 /* if unit didn't return msb, it's zeroed by cdrom_get_disc_info */
2922 last_track
= (di
.last_track_msb
<< 8) | di
.last_track_lsb
;
2923 ti_size
= cdrom_get_track_info(cdi
, last_track
, 1, &ti
);
2924 if (ti_size
< 0 || ti_size
< offsetof(typeof(ti
), track_start
))
2925 goto use_last_written
;
2927 /* if this track is blank, try the previous. */
2929 if (last_track
== 1)
2930 goto use_last_written
;
2932 ti_size
= cdrom_get_track_info(cdi
, last_track
, 1, &ti
);
2934 goto use_last_written
;
2937 /* if next recordable address field is valid, use it. */
2938 if (ti
.nwa_v
&& ti_size
>= offsetof(typeof(ti
), next_writable
)
2939 + sizeof(ti
.next_writable
)) {
2940 *next_writable
= be32_to_cpu(ti
.next_writable
);
2945 ret
= cdrom_get_last_written(cdi
, next_writable
);
2950 *next_writable
+= 7;
2955 static noinline
int mmc_ioctl_cdrom_read_data(struct cdrom_device_info
*cdi
,
2957 struct packet_command
*cgc
,
2960 struct scsi_sense_hdr sshdr
;
2961 struct cdrom_msf msf
;
2962 int blocksize
= 0, format
= 0, lba
;
2967 blocksize
= CD_FRAMESIZE_RAW
;
2969 case CDROMREADMODE1
:
2970 blocksize
= CD_FRAMESIZE
;
2973 case CDROMREADMODE2
:
2974 blocksize
= CD_FRAMESIZE_RAW0
;
2977 if (copy_from_user(&msf
, (struct cdrom_msf __user
*)arg
, sizeof(msf
)))
2979 lba
= msf_to_lba(msf
.cdmsf_min0
, msf
.cdmsf_sec0
, msf
.cdmsf_frame0
);
2980 /* FIXME: we need upper bound checking, too!! */
2984 cgc
->buffer
= kzalloc(blocksize
, GFP_KERNEL
);
2985 if (cgc
->buffer
== NULL
)
2988 memset(&sshdr
, 0, sizeof(sshdr
));
2989 cgc
->sshdr
= &sshdr
;
2990 cgc
->data_direction
= CGC_DATA_READ
;
2991 ret
= cdrom_read_block(cdi
, cgc
, lba
, 1, format
, blocksize
);
2992 if (ret
&& sshdr
.sense_key
== 0x05 &&
2993 sshdr
.asc
== 0x20 &&
2994 sshdr
.ascq
== 0x00) {
2996 * SCSI-II devices are not required to support
2997 * READ_CD, so let's try switching block size
2999 if (blocksize
!= CD_FRAMESIZE
) {
3000 ret
= cdrom_switch_blocksize(cdi
, blocksize
);
3005 ret
= cdrom_read_cd(cdi
, cgc
, lba
, blocksize
, 1);
3006 if (blocksize
!= CD_FRAMESIZE
)
3007 ret
|= cdrom_switch_blocksize(cdi
, CD_FRAMESIZE
);
3009 if (!ret
&& copy_to_user(arg
, cgc
->buffer
, blocksize
))
3016 static noinline
int mmc_ioctl_cdrom_read_audio(struct cdrom_device_info
*cdi
,
3019 struct cdrom_read_audio ra
;
3022 #ifdef CONFIG_COMPAT
3023 if (in_compat_syscall()) {
3024 struct compat_cdrom_read_audio
{
3025 union cdrom_addr addr
;
3027 compat_int_t nframes
;
3031 if (copy_from_user(&ra32
, arg
, sizeof(ra32
)))
3034 ra
= (struct cdrom_read_audio
) {
3036 .addr_format
= ra32
.addr_format
,
3037 .nframes
= ra32
.nframes
,
3038 .buf
= compat_ptr(ra32
.buf
),
3043 if (copy_from_user(&ra
, (struct cdrom_read_audio __user
*)arg
,
3048 if (ra
.addr_format
== CDROM_MSF
)
3049 lba
= msf_to_lba(ra
.addr
.msf
.minute
,
3052 else if (ra
.addr_format
== CDROM_LBA
)
3057 /* FIXME: we need upper bound checking, too!! */
3058 if (lba
< 0 || ra
.nframes
<= 0 || ra
.nframes
> CD_FRAMES
)
3061 return cdrom_read_cdda(cdi
, ra
.buf
, lba
, ra
.nframes
);
3064 static noinline
int mmc_ioctl_cdrom_subchannel(struct cdrom_device_info
*cdi
,
3068 struct cdrom_subchnl q
;
3069 u_char requested
, back
;
3070 if (copy_from_user(&q
, (struct cdrom_subchnl __user
*)arg
, sizeof(q
)))
3072 requested
= q
.cdsc_format
;
3073 if (!((requested
== CDROM_MSF
) ||
3074 (requested
== CDROM_LBA
)))
3077 ret
= cdrom_read_subchannel(cdi
, &q
, 0);
3080 back
= q
.cdsc_format
; /* local copy */
3081 sanitize_format(&q
.cdsc_absaddr
, &back
, requested
);
3082 sanitize_format(&q
.cdsc_reladdr
, &q
.cdsc_format
, requested
);
3083 if (copy_to_user((struct cdrom_subchnl __user
*)arg
, &q
, sizeof(q
)))
3085 /* cd_dbg(CD_DO_IOCTL, "CDROMSUBCHNL successful\n"); */
3089 static noinline
int mmc_ioctl_cdrom_play_msf(struct cdrom_device_info
*cdi
,
3091 struct packet_command
*cgc
)
3093 const struct cdrom_device_ops
*cdo
= cdi
->ops
;
3094 struct cdrom_msf msf
;
3095 cd_dbg(CD_DO_IOCTL
, "entering CDROMPLAYMSF\n");
3096 if (copy_from_user(&msf
, (struct cdrom_msf __user
*)arg
, sizeof(msf
)))
3098 cgc
->cmd
[0] = GPCMD_PLAY_AUDIO_MSF
;
3099 cgc
->cmd
[3] = msf
.cdmsf_min0
;
3100 cgc
->cmd
[4] = msf
.cdmsf_sec0
;
3101 cgc
->cmd
[5] = msf
.cdmsf_frame0
;
3102 cgc
->cmd
[6] = msf
.cdmsf_min1
;
3103 cgc
->cmd
[7] = msf
.cdmsf_sec1
;
3104 cgc
->cmd
[8] = msf
.cdmsf_frame1
;
3105 cgc
->data_direction
= CGC_DATA_NONE
;
3106 return cdo
->generic_packet(cdi
, cgc
);
3109 static noinline
int mmc_ioctl_cdrom_play_blk(struct cdrom_device_info
*cdi
,
3111 struct packet_command
*cgc
)
3113 const struct cdrom_device_ops
*cdo
= cdi
->ops
;
3114 struct cdrom_blk blk
;
3115 cd_dbg(CD_DO_IOCTL
, "entering CDROMPLAYBLK\n");
3116 if (copy_from_user(&blk
, (struct cdrom_blk __user
*)arg
, sizeof(blk
)))
3118 cgc
->cmd
[0] = GPCMD_PLAY_AUDIO_10
;
3119 cgc
->cmd
[2] = (blk
.from
>> 24) & 0xff;
3120 cgc
->cmd
[3] = (blk
.from
>> 16) & 0xff;
3121 cgc
->cmd
[4] = (blk
.from
>> 8) & 0xff;
3122 cgc
->cmd
[5] = blk
.from
& 0xff;
3123 cgc
->cmd
[7] = (blk
.len
>> 8) & 0xff;
3124 cgc
->cmd
[8] = blk
.len
& 0xff;
3125 cgc
->data_direction
= CGC_DATA_NONE
;
3126 return cdo
->generic_packet(cdi
, cgc
);
3129 static noinline
int mmc_ioctl_cdrom_volume(struct cdrom_device_info
*cdi
,
3131 struct packet_command
*cgc
,
3134 struct cdrom_volctrl volctrl
;
3135 unsigned char buffer
[32];
3136 char mask
[sizeof(buffer
)];
3137 unsigned short offset
;
3140 cd_dbg(CD_DO_IOCTL
, "entering CDROMVOLUME\n");
3142 if (copy_from_user(&volctrl
, (struct cdrom_volctrl __user
*)arg
,
3146 cgc
->buffer
= buffer
;
3148 ret
= cdrom_mode_sense(cdi
, cgc
, GPMODE_AUDIO_CTL_PAGE
, 0);
3152 /* originally the code depended on buffer[1] to determine
3153 how much data is available for transfer. buffer[1] is
3154 unfortunately ambigious and the only reliable way seem
3155 to be to simply skip over the block descriptor... */
3156 offset
= 8 + be16_to_cpu(*(__be16
*)(buffer
+ 6));
3158 if (offset
+ 16 > sizeof(buffer
))
3161 if (offset
+ 16 > cgc
->buflen
) {
3162 cgc
->buflen
= offset
+ 16;
3163 ret
= cdrom_mode_sense(cdi
, cgc
,
3164 GPMODE_AUDIO_CTL_PAGE
, 0);
3170 if ((buffer
[offset
] & 0x3f) != GPMODE_AUDIO_CTL_PAGE
||
3171 buffer
[offset
+ 1] < 14)
3174 /* now we have the current volume settings. if it was only
3175 a CDROMVOLREAD, return these values */
3176 if (cmd
== CDROMVOLREAD
) {
3177 volctrl
.channel0
= buffer
[offset
+9];
3178 volctrl
.channel1
= buffer
[offset
+11];
3179 volctrl
.channel2
= buffer
[offset
+13];
3180 volctrl
.channel3
= buffer
[offset
+15];
3181 if (copy_to_user((struct cdrom_volctrl __user
*)arg
, &volctrl
,
3187 /* get the volume mask */
3189 ret
= cdrom_mode_sense(cdi
, cgc
, GPMODE_AUDIO_CTL_PAGE
, 1);
3193 buffer
[offset
+ 9] = volctrl
.channel0
& mask
[offset
+ 9];
3194 buffer
[offset
+ 11] = volctrl
.channel1
& mask
[offset
+ 11];
3195 buffer
[offset
+ 13] = volctrl
.channel2
& mask
[offset
+ 13];
3196 buffer
[offset
+ 15] = volctrl
.channel3
& mask
[offset
+ 15];
3199 cgc
->buffer
= buffer
+ offset
- 8;
3200 memset(cgc
->buffer
, 0, 8);
3201 return cdrom_mode_select(cdi
, cgc
);
3204 static noinline
int mmc_ioctl_cdrom_start_stop(struct cdrom_device_info
*cdi
,
3205 struct packet_command
*cgc
,
3208 const struct cdrom_device_ops
*cdo
= cdi
->ops
;
3209 cd_dbg(CD_DO_IOCTL
, "entering CDROMSTART/CDROMSTOP\n");
3210 cgc
->cmd
[0] = GPCMD_START_STOP_UNIT
;
3212 cgc
->cmd
[4] = (cmd
== CDROMSTART
) ? 1 : 0;
3213 cgc
->data_direction
= CGC_DATA_NONE
;
3214 return cdo
->generic_packet(cdi
, cgc
);
3217 static noinline
int mmc_ioctl_cdrom_pause_resume(struct cdrom_device_info
*cdi
,
3218 struct packet_command
*cgc
,
3221 const struct cdrom_device_ops
*cdo
= cdi
->ops
;
3222 cd_dbg(CD_DO_IOCTL
, "entering CDROMPAUSE/CDROMRESUME\n");
3223 cgc
->cmd
[0] = GPCMD_PAUSE_RESUME
;
3224 cgc
->cmd
[8] = (cmd
== CDROMRESUME
) ? 1 : 0;
3225 cgc
->data_direction
= CGC_DATA_NONE
;
3226 return cdo
->generic_packet(cdi
, cgc
);
3229 static noinline
int mmc_ioctl_dvd_read_struct(struct cdrom_device_info
*cdi
,
3231 struct packet_command
*cgc
)
3235 int size
= sizeof(dvd_struct
);
3237 if (!CDROM_CAN(CDC_DVD
))
3240 s
= memdup_user(arg
, size
);
3244 cd_dbg(CD_DO_IOCTL
, "entering DVD_READ_STRUCT\n");
3246 ret
= dvd_read_struct(cdi
, s
, cgc
);
3250 if (copy_to_user(arg
, s
, size
))
3257 static noinline
int mmc_ioctl_dvd_auth(struct cdrom_device_info
*cdi
,
3262 if (!CDROM_CAN(CDC_DVD
))
3264 cd_dbg(CD_DO_IOCTL
, "entering DVD_AUTH\n");
3265 if (copy_from_user(&ai
, (dvd_authinfo __user
*)arg
, sizeof(ai
)))
3267 ret
= dvd_do_auth(cdi
, &ai
);
3270 if (copy_to_user((dvd_authinfo __user
*)arg
, &ai
, sizeof(ai
)))
3275 static noinline
int mmc_ioctl_cdrom_next_writable(struct cdrom_device_info
*cdi
,
3280 cd_dbg(CD_DO_IOCTL
, "entering CDROM_NEXT_WRITABLE\n");
3281 ret
= cdrom_get_next_writable(cdi
, &next
);
3284 if (copy_to_user((long __user
*)arg
, &next
, sizeof(next
)))
3289 static noinline
int mmc_ioctl_cdrom_last_written(struct cdrom_device_info
*cdi
,
3294 cd_dbg(CD_DO_IOCTL
, "entering CDROM_LAST_WRITTEN\n");
3295 ret
= cdrom_get_last_written(cdi
, &last
);
3298 if (in_compat_syscall())
3299 return put_user(last
, (__s32 __user
*)arg
);
3301 return put_user(last
, (long __user
*)arg
);
3304 static int mmc_ioctl(struct cdrom_device_info
*cdi
, unsigned int cmd
,
3307 struct packet_command cgc
;
3308 void __user
*userptr
= (void __user
*)arg
;
3310 memset(&cgc
, 0, sizeof(cgc
));
3312 /* build a unified command and queue it through
3313 cdo->generic_packet() */
3316 case CDROMREADMODE1
:
3317 case CDROMREADMODE2
:
3318 return mmc_ioctl_cdrom_read_data(cdi
, userptr
, &cgc
, cmd
);
3319 case CDROMREADAUDIO
:
3320 return mmc_ioctl_cdrom_read_audio(cdi
, userptr
);
3322 return mmc_ioctl_cdrom_subchannel(cdi
, userptr
);
3324 return mmc_ioctl_cdrom_play_msf(cdi
, userptr
, &cgc
);
3326 return mmc_ioctl_cdrom_play_blk(cdi
, userptr
, &cgc
);
3329 return mmc_ioctl_cdrom_volume(cdi
, userptr
, &cgc
, cmd
);
3332 return mmc_ioctl_cdrom_start_stop(cdi
, &cgc
, cmd
);
3335 return mmc_ioctl_cdrom_pause_resume(cdi
, &cgc
, cmd
);
3336 case DVD_READ_STRUCT
:
3337 return mmc_ioctl_dvd_read_struct(cdi
, userptr
, &cgc
);
3339 return mmc_ioctl_dvd_auth(cdi
, userptr
);
3340 case CDROM_NEXT_WRITABLE
:
3341 return mmc_ioctl_cdrom_next_writable(cdi
, userptr
);
3342 case CDROM_LAST_WRITTEN
:
3343 return mmc_ioctl_cdrom_last_written(cdi
, userptr
);
3350 * Just about every imaginable ioctl is supported in the Uniform layer
3352 * ATAPI / SCSI specific code now mainly resides in mmc_ioctl().
3354 int cdrom_ioctl(struct cdrom_device_info
*cdi
, struct block_device
*bdev
,
3355 fmode_t mode
, unsigned int cmd
, unsigned long arg
)
3357 void __user
*argp
= (void __user
*)arg
;
3361 * Try the generic SCSI command ioctl's first.
3363 ret
= scsi_cmd_blk_ioctl(bdev
, mode
, cmd
, argp
);
3368 case CDROMMULTISESSION
:
3369 return cdrom_ioctl_multisession(cdi
, argp
);
3371 return cdrom_ioctl_eject(cdi
);
3372 case CDROMCLOSETRAY
:
3373 return cdrom_ioctl_closetray(cdi
);
3375 return cdrom_ioctl_eject_sw(cdi
, arg
);
3376 case CDROM_MEDIA_CHANGED
:
3377 return cdrom_ioctl_media_changed(cdi
, arg
);
3378 case CDROM_SET_OPTIONS
:
3379 return cdrom_ioctl_set_options(cdi
, arg
);
3380 case CDROM_CLEAR_OPTIONS
:
3381 return cdrom_ioctl_clear_options(cdi
, arg
);
3382 case CDROM_SELECT_SPEED
:
3383 return cdrom_ioctl_select_speed(cdi
, arg
);
3384 case CDROM_SELECT_DISC
:
3385 return cdrom_ioctl_select_disc(cdi
, arg
);
3387 return cdrom_ioctl_reset(cdi
, bdev
);
3388 case CDROM_LOCKDOOR
:
3389 return cdrom_ioctl_lock_door(cdi
, arg
);
3391 return cdrom_ioctl_debug(cdi
, arg
);
3392 case CDROM_GET_CAPABILITY
:
3393 return cdrom_ioctl_get_capability(cdi
);
3395 return cdrom_ioctl_get_mcn(cdi
, argp
);
3396 case CDROM_DRIVE_STATUS
:
3397 return cdrom_ioctl_drive_status(cdi
, arg
);
3398 case CDROM_DISC_STATUS
:
3399 return cdrom_ioctl_disc_status(cdi
);
3400 case CDROM_CHANGER_NSLOTS
:
3401 return cdrom_ioctl_changer_nslots(cdi
);
3405 * Use the ioctls that are implemented through the generic_packet()
3406 * interface. this may look at bit funny, but if -ENOTTY is
3407 * returned that particular ioctl is not implemented and we
3408 * let it go through the device specific ones.
3410 if (CDROM_CAN(CDC_GENERIC_PACKET
)) {
3411 ret
= mmc_ioctl(cdi
, cmd
, arg
);
3417 * Note: most of the cd_dbg() calls are commented out here,
3418 * because they fill up the sys log when CD players poll
3423 return cdrom_ioctl_get_subchnl(cdi
, argp
);
3424 case CDROMREADTOCHDR
:
3425 return cdrom_ioctl_read_tochdr(cdi
, argp
);
3426 case CDROMREADTOCENTRY
:
3427 return cdrom_ioctl_read_tocentry(cdi
, argp
);
3429 return cdrom_ioctl_play_msf(cdi
, argp
);
3430 case CDROMPLAYTRKIND
:
3431 return cdrom_ioctl_play_trkind(cdi
, argp
);
3433 return cdrom_ioctl_volctrl(cdi
, argp
);
3435 return cdrom_ioctl_volread(cdi
, argp
);
3440 return cdrom_ioctl_audioctl(cdi
, cmd
);
3446 EXPORT_SYMBOL(cdrom_get_last_written
);
3447 EXPORT_SYMBOL(register_cdrom
);
3448 EXPORT_SYMBOL(unregister_cdrom
);
3449 EXPORT_SYMBOL(cdrom_open
);
3450 EXPORT_SYMBOL(cdrom_release
);
3451 EXPORT_SYMBOL(cdrom_ioctl
);
3452 EXPORT_SYMBOL(cdrom_number_of_slots
);
3453 EXPORT_SYMBOL(cdrom_mode_select
);
3454 EXPORT_SYMBOL(cdrom_mode_sense
);
3455 EXPORT_SYMBOL(init_cdrom_command
);
3456 EXPORT_SYMBOL(cdrom_get_media_event
);
3458 #ifdef CONFIG_SYSCTL
3460 #define CDROM_STR_SIZE 1000
3462 static struct cdrom_sysctl_settings
{
3463 char info
[CDROM_STR_SIZE
]; /* general info */
3464 int autoclose
; /* close tray upon mount, etc */
3465 int autoeject
; /* eject on umount */
3466 int debug
; /* turn on debugging messages */
3467 int lock
; /* lock the door on device open */
3468 int check
; /* check media type */
3469 } cdrom_sysctl_settings
;
3471 enum cdrom_print_option
{
3478 static int cdrom_print_info(const char *header
, int val
, char *info
,
3479 int *pos
, enum cdrom_print_option option
)
3481 const int max_size
= sizeof(cdrom_sysctl_settings
.info
);
3482 struct cdrom_device_info
*cdi
;
3485 ret
= scnprintf(info
+ *pos
, max_size
- *pos
, header
);
3491 list_for_each_entry(cdi
, &cdrom_list
, list
) {
3494 ret
= scnprintf(info
+ *pos
, max_size
- *pos
,
3498 ret
= scnprintf(info
+ *pos
, max_size
- *pos
,
3499 "\t%d", cdi
->speed
);
3502 ret
= scnprintf(info
+ *pos
, max_size
- *pos
,
3503 "\t%d", cdi
->capacity
);
3505 case CTL_CAPABILITY
:
3506 ret
= scnprintf(info
+ *pos
, max_size
- *pos
,
3507 "\t%d", CDROM_CAN(val
) != 0);
3510 pr_info("invalid option%d\n", option
);
3521 static int cdrom_sysctl_info(struct ctl_table
*ctl
, int write
,
3522 void *buffer
, size_t *lenp
, loff_t
*ppos
)
3525 char *info
= cdrom_sysctl_settings
.info
;
3526 const int max_size
= sizeof(cdrom_sysctl_settings
.info
);
3528 if (!*lenp
|| (*ppos
&& !write
)) {
3533 mutex_lock(&cdrom_mutex
);
3535 pos
= sprintf(info
, "CD-ROM information, " VERSION
"\n");
3537 if (cdrom_print_info("\ndrive name:\t", 0, info
, &pos
, CTL_NAME
))
3539 if (cdrom_print_info("\ndrive speed:\t", 0, info
, &pos
, CTL_SPEED
))
3541 if (cdrom_print_info("\ndrive # of slots:", 0, info
, &pos
, CTL_SLOTS
))
3543 if (cdrom_print_info("\nCan close tray:\t",
3544 CDC_CLOSE_TRAY
, info
, &pos
, CTL_CAPABILITY
))
3546 if (cdrom_print_info("\nCan open tray:\t",
3547 CDC_OPEN_TRAY
, info
, &pos
, CTL_CAPABILITY
))
3549 if (cdrom_print_info("\nCan lock tray:\t",
3550 CDC_LOCK
, info
, &pos
, CTL_CAPABILITY
))
3552 if (cdrom_print_info("\nCan change speed:",
3553 CDC_SELECT_SPEED
, info
, &pos
, CTL_CAPABILITY
))
3555 if (cdrom_print_info("\nCan select disk:",
3556 CDC_SELECT_DISC
, info
, &pos
, CTL_CAPABILITY
))
3558 if (cdrom_print_info("\nCan read multisession:",
3559 CDC_MULTI_SESSION
, info
, &pos
, CTL_CAPABILITY
))
3561 if (cdrom_print_info("\nCan read MCN:\t",
3562 CDC_MCN
, info
, &pos
, CTL_CAPABILITY
))
3564 if (cdrom_print_info("\nReports media changed:",
3565 CDC_MEDIA_CHANGED
, info
, &pos
, CTL_CAPABILITY
))
3567 if (cdrom_print_info("\nCan play audio:\t",
3568 CDC_PLAY_AUDIO
, info
, &pos
, CTL_CAPABILITY
))
3570 if (cdrom_print_info("\nCan write CD-R:\t",
3571 CDC_CD_R
, info
, &pos
, CTL_CAPABILITY
))
3573 if (cdrom_print_info("\nCan write CD-RW:",
3574 CDC_CD_RW
, info
, &pos
, CTL_CAPABILITY
))
3576 if (cdrom_print_info("\nCan read DVD:\t",
3577 CDC_DVD
, info
, &pos
, CTL_CAPABILITY
))
3579 if (cdrom_print_info("\nCan write DVD-R:",
3580 CDC_DVD_R
, info
, &pos
, CTL_CAPABILITY
))
3582 if (cdrom_print_info("\nCan write DVD-RAM:",
3583 CDC_DVD_RAM
, info
, &pos
, CTL_CAPABILITY
))
3585 if (cdrom_print_info("\nCan read MRW:\t",
3586 CDC_MRW
, info
, &pos
, CTL_CAPABILITY
))
3588 if (cdrom_print_info("\nCan write MRW:\t",
3589 CDC_MRW_W
, info
, &pos
, CTL_CAPABILITY
))
3591 if (cdrom_print_info("\nCan write RAM:\t",
3592 CDC_RAM
, info
, &pos
, CTL_CAPABILITY
))
3594 if (!scnprintf(info
+ pos
, max_size
- pos
, "\n\n"))
3597 mutex_unlock(&cdrom_mutex
);
3598 return proc_dostring(ctl
, write
, buffer
, lenp
, ppos
);
3600 pr_info("info buffer too small\n");
3604 /* Unfortunately, per device settings are not implemented through
3605 procfs/sysctl yet. When they are, this will naturally disappear. For now
3606 just update all drives. Later this will become the template on which
3607 new registered drives will be based. */
3608 static void cdrom_update_settings(void)
3610 struct cdrom_device_info
*cdi
;
3612 mutex_lock(&cdrom_mutex
);
3613 list_for_each_entry(cdi
, &cdrom_list
, list
) {
3614 if (autoclose
&& CDROM_CAN(CDC_CLOSE_TRAY
))
3615 cdi
->options
|= CDO_AUTO_CLOSE
;
3616 else if (!autoclose
)
3617 cdi
->options
&= ~CDO_AUTO_CLOSE
;
3618 if (autoeject
&& CDROM_CAN(CDC_OPEN_TRAY
))
3619 cdi
->options
|= CDO_AUTO_EJECT
;
3620 else if (!autoeject
)
3621 cdi
->options
&= ~CDO_AUTO_EJECT
;
3622 if (lockdoor
&& CDROM_CAN(CDC_LOCK
))
3623 cdi
->options
|= CDO_LOCK
;
3625 cdi
->options
&= ~CDO_LOCK
;
3626 if (check_media_type
)
3627 cdi
->options
|= CDO_CHECK_TYPE
;
3629 cdi
->options
&= ~CDO_CHECK_TYPE
;
3631 mutex_unlock(&cdrom_mutex
);
3634 static int cdrom_sysctl_handler(struct ctl_table
*ctl
, int write
,
3635 void *buffer
, size_t *lenp
, loff_t
*ppos
)
3639 ret
= proc_dointvec(ctl
, write
, buffer
, lenp
, ppos
);
3643 /* we only care for 1 or 0. */
3644 autoclose
= !!cdrom_sysctl_settings
.autoclose
;
3645 autoeject
= !!cdrom_sysctl_settings
.autoeject
;
3646 debug
= !!cdrom_sysctl_settings
.debug
;
3647 lockdoor
= !!cdrom_sysctl_settings
.lock
;
3648 check_media_type
= !!cdrom_sysctl_settings
.check
;
3650 /* update the option flags according to the changes. we
3651 don't have per device options through sysctl yet,
3652 but we will have and then this will disappear. */
3653 cdrom_update_settings();
3659 /* Place files in /proc/sys/dev/cdrom */
3660 static struct ctl_table cdrom_table
[] = {
3663 .data
= &cdrom_sysctl_settings
.info
,
3664 .maxlen
= CDROM_STR_SIZE
,
3666 .proc_handler
= cdrom_sysctl_info
,
3669 .procname
= "autoclose",
3670 .data
= &cdrom_sysctl_settings
.autoclose
,
3671 .maxlen
= sizeof(int),
3673 .proc_handler
= cdrom_sysctl_handler
,
3676 .procname
= "autoeject",
3677 .data
= &cdrom_sysctl_settings
.autoeject
,
3678 .maxlen
= sizeof(int),
3680 .proc_handler
= cdrom_sysctl_handler
,
3683 .procname
= "debug",
3684 .data
= &cdrom_sysctl_settings
.debug
,
3685 .maxlen
= sizeof(int),
3687 .proc_handler
= cdrom_sysctl_handler
,
3691 .data
= &cdrom_sysctl_settings
.lock
,
3692 .maxlen
= sizeof(int),
3694 .proc_handler
= cdrom_sysctl_handler
,
3697 .procname
= "check_media",
3698 .data
= &cdrom_sysctl_settings
.check
,
3699 .maxlen
= sizeof(int),
3701 .proc_handler
= cdrom_sysctl_handler
3706 static struct ctl_table cdrom_cdrom_table
[] = {
3708 .procname
= "cdrom",
3711 .child
= cdrom_table
,
3716 /* Make sure that /proc/sys/dev is there */
3717 static struct ctl_table cdrom_root_table
[] = {
3722 .child
= cdrom_cdrom_table
,
3726 static struct ctl_table_header
*cdrom_sysctl_header
;
3728 static void cdrom_sysctl_register(void)
3730 static atomic_t initialized
= ATOMIC_INIT(0);
3732 if (!atomic_add_unless(&initialized
, 1, 1))
3735 cdrom_sysctl_header
= register_sysctl_table(cdrom_root_table
);
3737 /* set the defaults */
3738 cdrom_sysctl_settings
.autoclose
= autoclose
;
3739 cdrom_sysctl_settings
.autoeject
= autoeject
;
3740 cdrom_sysctl_settings
.debug
= debug
;
3741 cdrom_sysctl_settings
.lock
= lockdoor
;
3742 cdrom_sysctl_settings
.check
= check_media_type
;
3745 static void cdrom_sysctl_unregister(void)
3747 if (cdrom_sysctl_header
)
3748 unregister_sysctl_table(cdrom_sysctl_header
);
3751 #else /* CONFIG_SYSCTL */
3753 static void cdrom_sysctl_register(void)
3757 static void cdrom_sysctl_unregister(void)
3761 #endif /* CONFIG_SYSCTL */
3763 static int __init
cdrom_init(void)
3765 cdrom_sysctl_register();
3770 static void __exit
cdrom_exit(void)
3772 pr_info("Uniform CD-ROM driver unloaded\n");
3773 cdrom_sysctl_unregister();
3776 module_init(cdrom_init
);
3777 module_exit(cdrom_exit
);
3778 MODULE_LICENSE("GPL");