1 /* linux/drivers/cdrom/cdrom.c
2 Copyright (c) 1996, 1997 David A. van Leeuwen.
3 Copyright (c) 1997, 1998 Erik Andersen <andersee@debian.org>
4 Copyright (c) 1998, 1999 Jens Axboe <axboe@image.dk>
6 May be copied or modified under the terms of the GNU General Public
7 License. See linux/COPYING for more information.
9 Uniform CD-ROM driver for Linux.
10 See Documentation/cdrom/cdrom-standard.tex for usage information.
12 The routines in the file provide a uniform interface between the
13 software that uses CD-ROMs and the various low-level drivers that
14 actually talk to the hardware. Suggestions are welcome.
15 Patches that work are more welcome though. ;-)
18 ----------------------------------
20 -- Modify sysctl/proc interface. I plan on having one directory per
21 drive, with entries for outputing general drive information, and sysctl
22 based tunable parameters such as whether the tray should auto-close for
23 that drive. Suggestions (or patches) for this welcome!
27 ----------------------------------
28 1.00 Date Unknown -- David van Leeuwen <david@tm.tno.nl>
29 -- Initial version by David A. van Leeuwen. I don't have a detailed
30 changelog for the 1.x series, David?
32 2.00 Dec 2, 1997 -- Erik Andersen <andersee@debian.org>
33 -- New maintainer! As David A. van Leeuwen has been too busy to activly
34 maintain and improve this driver, I am now carrying on the torch. If
35 you have a problem with this driver, please feel free to contact me.
37 -- Added (rudimentary) sysctl interface. I realize this is really weak
38 right now, and is _very_ badly implemented. It will be improved...
40 -- Modified CDROM_DISC_STATUS so that it is now incorporated into
41 the Uniform CD-ROM driver via the cdrom_count_tracks function.
42 The cdrom_count_tracks function helps resolve some of the false
43 assumptions of the CDROM_DISC_STATUS ioctl, and is also used to check
44 for the correct media type when mounting or playing audio from a CD.
46 -- Remove the calls to verify_area and only use the copy_from_user and
47 copy_to_user stuff, since these calls now provide their own memory
48 checking with the 2.1.x kernels.
50 -- Major update to return codes so that errors from low-level drivers
51 are passed on through (thanks to Gerd Knorr for pointing out this
54 -- Made it so if a function isn't implemented in a low-level driver,
55 ENOSYS is now returned instead of EINVAL.
57 -- Simplified some complex logic so that the source code is easier to read.
59 -- Other stuff I probably forgot to mention (lots of changes).
61 2.01 to 2.11 Dec 1997-Jan 1998
62 -- TO-DO! Write changelogs for 2.01 to 2.12.
64 2.12 Jan 24, 1998 -- Erik Andersen <andersee@debian.org>
65 -- Fixed a bug in the IOCTL_IN and IOCTL_OUT macros. It turns out that
66 copy_*_user does not return EFAULT on error, but instead returns the number
67 of bytes not copied. I was returning whatever non-zero stuff came back from
68 the copy_*_user functions directly, which would result in strange errors.
70 2.13 July 17, 1998 -- Erik Andersen <andersee@debian.org>
71 -- Fixed a bug in CDROM_SELECT_SPEED where you couldn't lower the speed
72 of the drive. Thanks to Tobias Ringstr|m <tori@prosolvia.se> for pointing
73 this out and providing a simple fix.
74 -- Fixed the procfs-unload-module bug with the fill_inode procfs callback.
75 thanks to Andrea Arcangeli
76 -- Fixed it so that the /proc entry now also shows up when cdrom is
77 compiled into the kernel. Before it only worked when loaded as a module.
79 2.14 August 17, 1998 -- Erik Andersen <andersee@debian.org>
80 -- Fixed a bug in cdrom_media_changed and handling of reporting that
81 the media had changed for devices that _don't_ implement media_changed.
82 Thanks to Grant R. Guenther <grant@torque.net> for spotting this bug.
83 -- Made a few things more pedanticly correct.
85 2.50 Oct 19, 1998 - Jens Axboe <axboe@image.dk>
86 -- New maintainers! Erik was too busy to continue the work on the driver,
87 so now Chris Zwilling <chris@cloudnet.com> and Jens Axboe <axboe@image.dk>
88 will do their best to follow in his footsteps
90 2.51 Dec 20, 1998 - Jens Axboe <axboe@image.dk>
91 -- Check if drive is capable of doing what we ask before blindly changing
92 cdi->options in various ioctl.
93 -- Added version to proc entry.
95 2.52 Jan 16, 1999 - Jens Axboe <axboe@image.dk>
96 -- Fixed an error in open_for_data where we would sometimes not return
97 the correct error value. Thanks Huba Gaspar <huba@softcell.hu>.
98 -- Fixed module usage count - usage was based on /proc/sys/dev
99 instead of /proc/sys/dev/cdrom. This could lead to an oops when other
100 modules had entries in dev. Feb 02 - real bug was in sysctl.c where
101 dev would be removed even though it was used. cdrom.c just illuminated
104 2.53 Feb 22, 1999 - Jens Axboe <axboe@image.dk>
105 -- Fixup of several ioctl calls, in particular CDROM_SET_OPTIONS has
106 been "rewritten" because capabilities and options aren't in sync. They
108 -- Added CDROM_LOCKDOOR ioctl. Locks the door and keeps it that way.
109 -- Added CDROM_RESET ioctl.
110 -- Added CDROM_DEBUG ioctl. Enable debug messages on-the-fly.
111 -- Added CDROM_GET_CAPABILITY ioctl. This relieves userspace programs
112 from parsing /proc/sys/dev/cdrom/info.
114 2.54 Mar 15, 1999 - Jens Axboe <axboe@image.dk>
115 -- Check capability mask from low level driver when counting tracks as
116 per suggestion from Corey J. Scotts <cstotts@blue.weeg.uiowa.edu>.
118 2.55 Apr 25, 1999 - Jens Axboe <axboe@image.dk>
119 -- autoclose was mistakenly checked against CDC_OPEN_TRAY instead of
121 -- proc info didn't mask against capabilities mask.
123 3.00 Aug 5, 1999 - Jens Axboe <axboe@image.dk>
124 -- Unified audio ioctl handling across CD-ROM drivers. A lot of the
125 code was duplicated before. Drives that support the generic packet
126 interface are now being fed packets from here instead.
127 -- First attempt at adding support for MMC2 commands - for DVD and
128 CD-R(W) drives. Only the DVD parts are in now - the interface used is
129 the same as for the audio ioctls.
130 -- ioctl cleanups. if a drive couldn't play audio, it didn't get
131 a change to perform device specific ioctls as well.
132 -- Defined CDROM_CAN(CDC_XXX) for checking the capabilities.
133 -- Put in sysctl files for autoclose, autoeject, check_media, debug,
135 -- /proc/sys/dev/cdrom/info has been updated to also contain info about
136 CD-Rx and DVD capabilities.
137 -- Now default to checking media type.
138 -- CDROM_SEND_PACKET ioctl added. The infrastructure was in place for
139 doing this anyway, with the generic_packet addition.
141 3.01 Aug 6, 1999 - Jens Axboe <axboe@image.dk>
142 -- Fix up the sysctl handling so that the option flags get set
144 -- Fix up ioctl handling so the device specific ones actually get
147 3.02 Aug 8, 1999 - Jens Axboe <axboe@image.dk>
148 -- Fixed volume control on SCSI drives (or others with longer audio
150 -- Fixed a couple of DVD minors. Thanks to Andrew T. Veliath
151 <andrewtv@usa.net> for telling me and for having defined the various
152 DVD structures and ioctls in the first place! He designed the original
153 DVD patches for ide-cd and while I rearranged and unified them, the
154 interface is still the same.
156 3.03 Sep 1, 1999 - Jens Axboe <axboe@image.dk>
157 -- Moved the rest of the audio ioctls from the CD-ROM drivers here. Only
158 CDROMREADTOCENTRY and CDROMREADTOCHDR are left.
159 -- Moved the CDROMREADxxx ioctls in here.
160 -- Defined the cdrom_get_last_written and cdrom_get_next_block as ioctls
161 and exported functions.
162 -- Erik Andersen <andersen@xmission.com> modified all SCMD_ commands
163 to now read GPCMD_ for the new generic packet interface. All low level
164 drivers are updated as well.
165 -- Various other cleanups.
167 3.04 Sep 12, 1999 - Jens Axboe <axboe@image.dk>
168 -- Fixed a couple of possible memory leaks (if an operation failed and
169 we didn't free the buffer before returning the error).
170 -- Integrated Uniform CD Changer handling from Richard Sharman
171 <rsharman@pobox.com>.
172 -- Defined CD_DVD and CD_CHANGER log levels.
173 -- Fixed the CDROMREADxxx ioctls.
174 -- CDROMPLAYTRKIND uses the GPCMD_PLAY_AUDIO_MSF command - too few
175 drives supported it. We lose the index part, however.
176 -- Small modifications to accommodate opens of /dev/hdc1, required
177 for ide-cd to handle multisession discs.
178 -- Export cdrom_mode_sense and cdrom_mode_select.
179 -- init_cdrom_command() for setting up a cgc command.
181 3.05 Oct 24, 1999 - Jens Axboe <axboe@image.dk>
182 -- Changed the interface for CDROM_SEND_PACKET. Before it was virtually
183 impossible to send the drive data in a sensible way.
184 -- Lowered stack usage in mmc_ioctl(), dvd_read_disckey(), and
186 -- Added setup of write mode for packet writing.
187 -- Fixed CDDA ripping with cdda2wav - accept much larger requests of
188 number of frames and split the reads in blocks of 8.
190 3.06 Dec 13, 1999 - Jens Axboe <axboe@image.dk>
191 -- Added support for changing the region of DVD drives.
192 -- Added sense data to generic command.
194 3.07 Feb 2, 2000 - Jens Axboe <axboe@suse.de>
195 -- Do same "read header length" trick in cdrom_get_disc_info() as
196 we do in cdrom_get_track_info() -- some drive don't obey specs and
197 fail if they can't supply the full Mt Fuji size table.
198 -- Deleted stuff related to setting up write modes. It has a different
200 -- Clear header length in mode_select unconditionally.
201 -- Removed the register_disk() that was added, not needed here.
203 3.08 May 1, 2000 - Jens Axboe <axboe@suse.de>
204 -- Fix direction flag in setup_send_key and setup_report_key. This
205 gave some SCSI adapters problems.
206 -- Always return -EROFS for write opens
207 -- Convert to module_init/module_exit style init and remove some
208 of the #ifdef MODULE stuff
209 -- Fix several dvd errors - DVD_LU_SEND_ASF should pass agid,
210 DVD_HOST_SEND_RPC_STATE did not set buffer size in cdb, and
211 dvd_do_auth passed uninitialized data to drive because init_cdrom_command
212 did not clear a 0 sized buffer.
214 3.09 May 12, 2000 - Jens Axboe <axboe@suse.de>
215 -- Fix Video-CD on SCSI drives that don't support READ_CD command. In
216 that case switch block size and issue plain READ_10 again, then switch
219 3.10 Jun 10, 2000 - Jens Axboe <axboe@suse.de>
220 -- Fix volume control on CD's - old SCSI-II drives now use their own
221 code, as doing MODE6 stuff in here is really not my intention.
222 -- Use READ_DISC_INFO for more reliable end-of-disc.
224 3.11 Jun 12, 2000 - Jens Axboe <axboe@suse.de>
225 -- Fix bug in getting rpc phase 2 region info.
226 -- Reinstate "correct" CDROMPLAYTRKIND
228 3.12 Oct 18, 2000 - Jens Axboe <axboe@suse.de>
229 -- Use quiet bit on packet commands not known to work
231 3.20 Dec 17, 2003 - Jens Axboe <axboe@suse.de>
232 -- Various fixes and lots of cleanups not listed :-)
234 -- Mt Rainier support
235 -- DVD-RAM write open fixes
237 Nov 5 2001, Aug 8 2002. Modified by Andy Polyakov
238 <appro@fy.chalmers.se> to support MMC-3 compliant DVD+RW units.
240 Modified by Nigel Kukard <nkukard@lbsd.net> - support DVD+RW
241 2.4.x patch by Andy Polyakov <appro@fy.chalmers.se>
243 -------------------------------------------------------------------------*/
245 #define REVISION "Revision: 3.20"
246 #define VERSION "Id: cdrom.c 3.20 2003/12/17"
248 /* I use an error-log mask to give fine grain control over the type of
249 messages dumped to the system logs. The available masks include: */
250 #define CD_NOTHING 0x0
251 #define CD_WARNING 0x1
252 #define CD_REG_UNREG 0x2
253 #define CD_DO_IOCTL 0x4
255 #define CD_CLOSE 0x10
256 #define CD_COUNT_TRACKS 0x20
257 #define CD_CHANGER 0x40
260 /* Define this to remove _all_ the debugging messages */
261 /* #define ERRLOGMASK CD_NOTHING */
262 #define ERRLOGMASK CD_WARNING
263 /* #define ERRLOGMASK (CD_WARNING|CD_OPEN|CD_COUNT_TRACKS|CD_CLOSE) */
264 /* #define ERRLOGMASK (CD_WARNING|CD_REG_UNREG|CD_DO_IOCTL|CD_OPEN|CD_CLOSE|CD_COUNT_TRACKS) */
266 #include <linux/module.h>
267 #include <linux/fs.h>
268 #include <linux/buffer_head.h>
269 #include <linux/major.h>
270 #include <linux/types.h>
271 #include <linux/errno.h>
272 #include <linux/kernel.h>
273 #include <linux/mm.h>
274 #include <linux/slab.h>
275 #include <linux/cdrom.h>
276 #include <linux/sysctl.h>
277 #include <linux/proc_fs.h>
278 #include <linux/blkpg.h>
279 #include <linux/init.h>
280 #include <linux/fcntl.h>
281 #include <linux/blkdev.h>
282 #include <linux/times.h>
284 #include <asm/uaccess.h>
286 /* used to tell the module to turn on full debugging messages */
288 /* used to keep tray locked at all times */
289 static int keeplocked
;
290 /* default compatibility mode */
291 static int autoclose
=1;
292 static int autoeject
;
293 static int lockdoor
= 1;
294 /* will we ever get to use this... sigh. */
295 static int check_media_type
;
296 /* automatically restart mrw format */
297 static int mrw_format_restart
= 1;
298 module_param(debug
, bool, 0);
299 module_param(autoclose
, bool, 0);
300 module_param(autoeject
, bool, 0);
301 module_param(lockdoor
, bool, 0);
302 module_param(check_media_type
, bool, 0);
303 module_param(mrw_format_restart
, bool, 0);
305 static DEFINE_MUTEX(cdrom_mutex
);
307 static const char *mrw_format_status
[] = {
314 static const char *mrw_address_space
[] = { "DMA", "GAA" };
316 #if (ERRLOGMASK!=CD_NOTHING)
317 #define cdinfo(type, fmt, args...) \
318 if ((ERRLOGMASK & type) || debug==1 ) \
319 printk(KERN_INFO "cdrom: " fmt, ## args)
321 #define cdinfo(type, fmt, args...)
324 /* These are used to simplify getting data in from and back to user land */
325 #define IOCTL_IN(arg, type, in) \
326 if (copy_from_user(&(in), (type __user *) (arg), sizeof (in))) \
329 #define IOCTL_OUT(arg, type, out) \
330 if (copy_to_user((type __user *) (arg), &(out), sizeof (out))) \
333 /* The (cdo->capability & ~cdi->mask & CDC_XXX) construct was used in
334 a lot of places. This macro makes the code more clear. */
335 #define CDROM_CAN(type) (cdi->ops->capability & ~cdi->mask & (type))
337 /* used in the audio ioctls */
338 #define CHECKAUDIO if ((ret=check_for_audio_disc(cdi, cdo))) return ret
341 * Another popular OS uses 7 seconds as the hard timeout for default
342 * commands, so it is a good choice for us as well.
344 #define CDROM_DEF_TIMEOUT (7 * HZ)
346 /* Not-exported routines. */
347 static int open_for_data(struct cdrom_device_info
* cdi
);
348 static int check_for_audio_disc(struct cdrom_device_info
* cdi
,
349 struct cdrom_device_ops
* cdo
);
350 static void sanitize_format(union cdrom_addr
*addr
,
351 u_char
* curr
, u_char requested
);
352 static int mmc_ioctl(struct cdrom_device_info
*cdi
, unsigned int cmd
,
355 int cdrom_get_last_written(struct cdrom_device_info
*, long *);
356 static int cdrom_get_next_writable(struct cdrom_device_info
*, long *);
357 static void cdrom_count_tracks(struct cdrom_device_info
*, tracktype
*);
359 static int cdrom_mrw_exit(struct cdrom_device_info
*cdi
);
361 static int cdrom_get_disc_info(struct cdrom_device_info
*cdi
, disc_information
*di
);
363 static void cdrom_sysctl_register(void);
365 static LIST_HEAD(cdrom_list
);
367 static int cdrom_dummy_generic_packet(struct cdrom_device_info
*cdi
,
368 struct packet_command
*cgc
)
371 cgc
->sense
->sense_key
= 0x05;
372 cgc
->sense
->asc
= 0x20;
373 cgc
->sense
->ascq
= 0x00;
380 /* This macro makes sure we don't have to check on cdrom_device_ops
381 * existence in the run-time routines below. Change_capability is a
382 * hack to have the capability flags defined const, while we can still
383 * change it here without gcc complaining at every line.
385 #define ENSURE(call, bits) if (cdo->call == NULL) *change_capability &= ~(bits)
387 int register_cdrom(struct cdrom_device_info
*cdi
)
389 static char banner_printed
;
390 struct cdrom_device_ops
*cdo
= cdi
->ops
;
391 int *change_capability
= (int *)&cdo
->capability
; /* hack */
393 cdinfo(CD_OPEN
, "entering register_cdrom\n");
395 if (cdo
->open
== NULL
|| cdo
->release
== NULL
)
397 if (!banner_printed
) {
398 printk(KERN_INFO
"Uniform CD-ROM driver " REVISION
"\n");
400 cdrom_sysctl_register();
403 ENSURE(drive_status
, CDC_DRIVE_STATUS
);
404 ENSURE(media_changed
, CDC_MEDIA_CHANGED
);
405 ENSURE(tray_move
, CDC_CLOSE_TRAY
| CDC_OPEN_TRAY
);
406 ENSURE(lock_door
, CDC_LOCK
);
407 ENSURE(select_speed
, CDC_SELECT_SPEED
);
408 ENSURE(get_last_session
, CDC_MULTI_SESSION
);
409 ENSURE(get_mcn
, CDC_MCN
);
410 ENSURE(reset
, CDC_RESET
);
411 ENSURE(audio_ioctl
, CDC_PLAY_AUDIO
);
412 ENSURE(generic_packet
, CDC_GENERIC_PACKET
);
415 cdi
->options
= CDO_USE_FFLAGS
;
417 if (autoclose
==1 && CDROM_CAN(CDC_CLOSE_TRAY
))
418 cdi
->options
|= (int) CDO_AUTO_CLOSE
;
419 if (autoeject
==1 && CDROM_CAN(CDC_OPEN_TRAY
))
420 cdi
->options
|= (int) CDO_AUTO_EJECT
;
422 cdi
->options
|= (int) CDO_LOCK
;
423 if (check_media_type
==1)
424 cdi
->options
|= (int) CDO_CHECK_TYPE
;
426 if (CDROM_CAN(CDC_MRW_W
))
427 cdi
->exit
= cdrom_mrw_exit
;
430 cdi
->cdda_method
= CDDA_BPC_FULL
;
432 cdi
->cdda_method
= CDDA_OLD
;
434 if (!cdo
->generic_packet
)
435 cdo
->generic_packet
= cdrom_dummy_generic_packet
;
437 cdinfo(CD_REG_UNREG
, "drive \"/dev/%s\" registered\n", cdi
->name
);
438 mutex_lock(&cdrom_mutex
);
439 list_add(&cdi
->list
, &cdrom_list
);
440 mutex_unlock(&cdrom_mutex
);
445 int unregister_cdrom(struct cdrom_device_info
*cdi
)
447 cdinfo(CD_OPEN
, "entering unregister_cdrom\n");
449 mutex_lock(&cdrom_mutex
);
450 list_del(&cdi
->list
);
451 mutex_unlock(&cdrom_mutex
);
456 cdi
->ops
->n_minors
--;
457 cdinfo(CD_REG_UNREG
, "drive \"/dev/%s\" unregistered\n", cdi
->name
);
461 int cdrom_get_media_event(struct cdrom_device_info
*cdi
,
462 struct media_event_desc
*med
)
464 struct packet_command cgc
;
465 unsigned char buffer
[8];
466 struct event_header
*eh
= (struct event_header
*) buffer
;
468 init_cdrom_command(&cgc
, buffer
, sizeof(buffer
), CGC_DATA_READ
);
469 cgc
.cmd
[0] = GPCMD_GET_EVENT_STATUS_NOTIFICATION
;
470 cgc
.cmd
[1] = 1; /* IMMED */
471 cgc
.cmd
[4] = 1 << 4; /* media event */
472 cgc
.cmd
[8] = sizeof(buffer
);
475 if (cdi
->ops
->generic_packet(cdi
, &cgc
))
478 if (be16_to_cpu(eh
->data_len
) < sizeof(*med
))
481 if (eh
->nea
|| eh
->notification_class
!= 0x4)
484 memcpy(med
, &buffer
[sizeof(*eh
)], sizeof(*med
));
489 * the first prototypes used 0x2c as the page code for the mrw mode page,
490 * subsequently this was changed to 0x03. probe the one used by this drive
492 static int cdrom_mrw_probe_pc(struct cdrom_device_info
*cdi
)
494 struct packet_command cgc
;
497 init_cdrom_command(&cgc
, buffer
, sizeof(buffer
), CGC_DATA_READ
);
502 if (!cdrom_mode_sense(cdi
, &cgc
, MRW_MODE_PC
, 0)) {
503 cdi
->mrw_mode_page
= MRW_MODE_PC
;
505 } else if (!cdrom_mode_sense(cdi
, &cgc
, MRW_MODE_PC_PRE1
, 0)) {
506 cdi
->mrw_mode_page
= MRW_MODE_PC_PRE1
;
513 static int cdrom_is_mrw(struct cdrom_device_info
*cdi
, int *write
)
515 struct packet_command cgc
;
516 struct mrw_feature_desc
*mfd
;
517 unsigned char buffer
[16];
522 init_cdrom_command(&cgc
, buffer
, sizeof(buffer
), CGC_DATA_READ
);
524 cgc
.cmd
[0] = GPCMD_GET_CONFIGURATION
;
525 cgc
.cmd
[3] = CDF_MRW
;
526 cgc
.cmd
[8] = sizeof(buffer
);
529 if ((ret
= cdi
->ops
->generic_packet(cdi
, &cgc
)))
532 mfd
= (struct mrw_feature_desc
*)&buffer
[sizeof(struct feature_header
)];
533 if (be16_to_cpu(mfd
->feature_code
) != CDF_MRW
)
537 if ((ret
= cdrom_mrw_probe_pc(cdi
))) {
545 static int cdrom_mrw_bgformat(struct cdrom_device_info
*cdi
, int cont
)
547 struct packet_command cgc
;
548 unsigned char buffer
[12];
551 printk(KERN_INFO
"cdrom: %sstarting format\n", cont
? "Re" : "");
554 * FmtData bit set (bit 4), format type is 1
556 init_cdrom_command(&cgc
, buffer
, sizeof(buffer
), CGC_DATA_WRITE
);
557 cgc
.cmd
[0] = GPCMD_FORMAT_UNIT
;
558 cgc
.cmd
[1] = (1 << 4) | 1;
560 cgc
.timeout
= 5 * 60 * HZ
;
563 * 4 byte format list header, 8 byte format list descriptor
576 buffer
[8] = 0x24 << 2;
579 ret
= cdi
->ops
->generic_packet(cdi
, &cgc
);
581 printk(KERN_INFO
"cdrom: bgformat failed\n");
586 static int cdrom_mrw_bgformat_susp(struct cdrom_device_info
*cdi
, int immed
)
588 struct packet_command cgc
;
590 init_cdrom_command(&cgc
, NULL
, 0, CGC_DATA_NONE
);
591 cgc
.cmd
[0] = GPCMD_CLOSE_TRACK
;
594 * Session = 1, Track = 0
596 cgc
.cmd
[1] = !!immed
;
599 cgc
.timeout
= 5 * 60 * HZ
;
601 return cdi
->ops
->generic_packet(cdi
, &cgc
);
604 static int cdrom_flush_cache(struct cdrom_device_info
*cdi
)
606 struct packet_command cgc
;
608 init_cdrom_command(&cgc
, NULL
, 0, CGC_DATA_NONE
);
609 cgc
.cmd
[0] = GPCMD_FLUSH_CACHE
;
611 cgc
.timeout
= 5 * 60 * HZ
;
613 return cdi
->ops
->generic_packet(cdi
, &cgc
);
616 static int cdrom_mrw_exit(struct cdrom_device_info
*cdi
)
621 ret
= cdrom_get_disc_info(cdi
, &di
);
622 if (ret
< 0 || ret
< (int)offsetof(typeof(di
),disc_type
))
626 if (di
.mrw_status
== CDM_MRW_BGFORMAT_ACTIVE
) {
627 printk(KERN_INFO
"cdrom: issuing MRW back ground "
629 ret
= cdrom_mrw_bgformat_susp(cdi
, 0);
632 if (!ret
&& cdi
->media_written
)
633 ret
= cdrom_flush_cache(cdi
);
638 static int cdrom_mrw_set_lba_space(struct cdrom_device_info
*cdi
, int space
)
640 struct packet_command cgc
;
641 struct mode_page_header
*mph
;
643 int ret
, offset
, size
;
645 init_cdrom_command(&cgc
, buffer
, sizeof(buffer
), CGC_DATA_READ
);
648 cgc
.buflen
= sizeof(buffer
);
650 if ((ret
= cdrom_mode_sense(cdi
, &cgc
, cdi
->mrw_mode_page
, 0)))
653 mph
= (struct mode_page_header
*) buffer
;
654 offset
= be16_to_cpu(mph
->desc_length
);
655 size
= be16_to_cpu(mph
->mode_data_length
) + 2;
657 buffer
[offset
+ 3] = space
;
660 if ((ret
= cdrom_mode_select(cdi
, &cgc
)))
663 printk(KERN_INFO
"cdrom: %s: mrw address space %s selected\n", cdi
->name
, mrw_address_space
[space
]);
667 static int cdrom_get_random_writable(struct cdrom_device_info
*cdi
,
668 struct rwrt_feature_desc
*rfd
)
670 struct packet_command cgc
;
674 init_cdrom_command(&cgc
, buffer
, sizeof(buffer
), CGC_DATA_READ
);
676 cgc
.cmd
[0] = GPCMD_GET_CONFIGURATION
; /* often 0x46 */
677 cgc
.cmd
[3] = CDF_RWRT
; /* often 0x0020 */
678 cgc
.cmd
[8] = sizeof(buffer
); /* often 0x18 */
681 if ((ret
= cdi
->ops
->generic_packet(cdi
, &cgc
)))
684 memcpy(rfd
, &buffer
[sizeof(struct feature_header
)], sizeof (*rfd
));
688 static int cdrom_has_defect_mgt(struct cdrom_device_info
*cdi
)
690 struct packet_command cgc
;
692 __be16
*feature_code
;
695 init_cdrom_command(&cgc
, buffer
, sizeof(buffer
), CGC_DATA_READ
);
697 cgc
.cmd
[0] = GPCMD_GET_CONFIGURATION
;
698 cgc
.cmd
[3] = CDF_HWDM
;
699 cgc
.cmd
[8] = sizeof(buffer
);
702 if ((ret
= cdi
->ops
->generic_packet(cdi
, &cgc
)))
705 feature_code
= (__be16
*) &buffer
[sizeof(struct feature_header
)];
706 if (be16_to_cpu(*feature_code
) == CDF_HWDM
)
713 static int cdrom_is_random_writable(struct cdrom_device_info
*cdi
, int *write
)
715 struct rwrt_feature_desc rfd
;
720 if ((ret
= cdrom_get_random_writable(cdi
, &rfd
)))
723 if (CDF_RWRT
== be16_to_cpu(rfd
.feature_code
))
729 static int cdrom_media_erasable(struct cdrom_device_info
*cdi
)
734 ret
= cdrom_get_disc_info(cdi
, &di
);
735 if (ret
< 0 || ret
< offsetof(typeof(di
), n_first_track
))
742 * FIXME: check RO bit
744 static int cdrom_dvdram_open_write(struct cdrom_device_info
*cdi
)
746 int ret
= cdrom_media_erasable(cdi
);
749 * allow writable open if media info read worked and media is
750 * erasable, _or_ if it fails since not all drives support it
758 static int cdrom_mrw_open_write(struct cdrom_device_info
*cdi
)
764 * always reset to DMA lba space on open
766 if (cdrom_mrw_set_lba_space(cdi
, MRW_LBA_DMA
)) {
767 printk(KERN_ERR
"cdrom: failed setting lba address space\n");
771 ret
= cdrom_get_disc_info(cdi
, &di
);
772 if (ret
< 0 || ret
< offsetof(typeof(di
),disc_type
))
780 * 0 - not MRW formatted
781 * 1 - MRW bgformat started, but not running or complete
782 * 2 - MRW bgformat in progress
783 * 3 - MRW formatting complete
786 printk(KERN_INFO
"cdrom open: mrw_status '%s'\n",
787 mrw_format_status
[di
.mrw_status
]);
790 else if (di
.mrw_status
== CDM_MRW_BGFORMAT_INACTIVE
&&
792 ret
= cdrom_mrw_bgformat(cdi
, 1);
797 static int mo_open_write(struct cdrom_device_info
*cdi
)
799 struct packet_command cgc
;
803 init_cdrom_command(&cgc
, &buffer
, 4, CGC_DATA_READ
);
807 * obtain write protect information as per
808 * drivers/scsi/sd.c:sd_read_write_protect_flag
811 ret
= cdrom_mode_sense(cdi
, &cgc
, GPMODE_ALL_PAGES
, 0);
813 ret
= cdrom_mode_sense(cdi
, &cgc
, GPMODE_VENDOR_PAGE
, 0);
816 ret
= cdrom_mode_sense(cdi
, &cgc
, GPMODE_ALL_PAGES
, 0);
819 /* drive gave us no info, let the user go ahead */
823 return buffer
[3] & 0x80;
826 static int cdrom_ram_open_write(struct cdrom_device_info
*cdi
)
828 struct rwrt_feature_desc rfd
;
831 if ((ret
= cdrom_has_defect_mgt(cdi
)))
834 if ((ret
= cdrom_get_random_writable(cdi
, &rfd
)))
836 else if (CDF_RWRT
== be16_to_cpu(rfd
.feature_code
))
839 cdinfo(CD_OPEN
, "can open for random write\n");
843 static void cdrom_mmc3_profile(struct cdrom_device_info
*cdi
)
845 struct packet_command cgc
;
847 int ret
, mmc3_profile
;
849 init_cdrom_command(&cgc
, buffer
, sizeof(buffer
), CGC_DATA_READ
);
851 cgc
.cmd
[0] = GPCMD_GET_CONFIGURATION
;
853 cgc
.cmd
[2] = cgc
.cmd
[3] = 0; /* Starting Feature Number */
854 cgc
.cmd
[8] = sizeof(buffer
); /* Allocation Length */
857 if ((ret
= cdi
->ops
->generic_packet(cdi
, &cgc
)))
858 mmc3_profile
= 0xffff;
860 mmc3_profile
= (buffer
[6] << 8) | buffer
[7];
862 cdi
->mmc3_profile
= mmc3_profile
;
865 static int cdrom_is_dvd_rw(struct cdrom_device_info
*cdi
)
867 switch (cdi
->mmc3_profile
) {
868 case 0x12: /* DVD-RAM */
869 case 0x1A: /* DVD+RW */
877 * returns 0 for ok to open write, non-0 to disallow
879 static int cdrom_open_write(struct cdrom_device_info
*cdi
)
881 int mrw
, mrw_write
, ram_write
;
885 if (!cdrom_is_mrw(cdi
, &mrw_write
))
888 if (CDROM_CAN(CDC_MO_DRIVE
))
891 (void) cdrom_is_random_writable(cdi
, &ram_write
);
894 cdi
->mask
&= ~CDC_MRW
;
896 cdi
->mask
|= CDC_MRW
;
899 cdi
->mask
&= ~CDC_MRW_W
;
901 cdi
->mask
|= CDC_MRW_W
;
904 cdi
->mask
&= ~CDC_RAM
;
906 cdi
->mask
|= CDC_RAM
;
908 if (CDROM_CAN(CDC_MRW_W
))
909 ret
= cdrom_mrw_open_write(cdi
);
910 else if (CDROM_CAN(CDC_DVD_RAM
))
911 ret
= cdrom_dvdram_open_write(cdi
);
912 else if (CDROM_CAN(CDC_RAM
) &&
913 !CDROM_CAN(CDC_CD_R
|CDC_CD_RW
|CDC_DVD
|CDC_DVD_R
|CDC_MRW
|CDC_MO_DRIVE
))
914 ret
= cdrom_ram_open_write(cdi
);
915 else if (CDROM_CAN(CDC_MO_DRIVE
))
916 ret
= mo_open_write(cdi
);
917 else if (!cdrom_is_dvd_rw(cdi
))
923 static void cdrom_dvd_rw_close_write(struct cdrom_device_info
*cdi
)
925 struct packet_command cgc
;
927 if (cdi
->mmc3_profile
!= 0x1a) {
928 cdinfo(CD_CLOSE
, "%s: No DVD+RW\n", cdi
->name
);
932 if (!cdi
->media_written
) {
933 cdinfo(CD_CLOSE
, "%s: DVD+RW media clean\n", cdi
->name
);
937 printk(KERN_INFO
"cdrom: %s: dirty DVD+RW media, \"finalizing\"\n",
940 init_cdrom_command(&cgc
, NULL
, 0, CGC_DATA_NONE
);
941 cgc
.cmd
[0] = GPCMD_FLUSH_CACHE
;
943 cdi
->ops
->generic_packet(cdi
, &cgc
);
945 init_cdrom_command(&cgc
, NULL
, 0, CGC_DATA_NONE
);
946 cgc
.cmd
[0] = GPCMD_CLOSE_TRACK
;
947 cgc
.timeout
= 3000*HZ
;
949 cdi
->ops
->generic_packet(cdi
, &cgc
);
951 init_cdrom_command(&cgc
, NULL
, 0, CGC_DATA_NONE
);
952 cgc
.cmd
[0] = GPCMD_CLOSE_TRACK
;
953 cgc
.cmd
[2] = 2; /* Close session */
955 cgc
.timeout
= 3000*HZ
;
956 cdi
->ops
->generic_packet(cdi
, &cgc
);
958 cdi
->media_written
= 0;
961 static int cdrom_close_write(struct cdrom_device_info
*cdi
)
964 return cdrom_flush_cache(cdi
);
970 /* We use the open-option O_NONBLOCK to indicate that the
971 * purpose of opening is only for subsequent ioctl() calls; no device
972 * integrity checks are performed.
974 * We hope that all cd-player programs will adopt this convention. It
975 * is in their own interest: device control becomes a lot easier
978 int cdrom_open(struct cdrom_device_info
*cdi
, struct inode
*ip
, struct file
*fp
)
982 cdinfo(CD_OPEN
, "entering cdrom_open\n");
984 /* if this was a O_NONBLOCK open and we should honor the flags,
985 * do a quick open without drive/disc integrity checks. */
987 if ((fp
->f_flags
& O_NONBLOCK
) && (cdi
->options
& CDO_USE_FFLAGS
)) {
988 ret
= cdi
->ops
->open(cdi
, 1);
990 ret
= open_for_data(cdi
);
993 cdrom_mmc3_profile(cdi
);
994 if (fp
->f_mode
& FMODE_WRITE
) {
996 if (cdrom_open_write(cdi
))
998 if (!CDROM_CAN(CDC_RAM
))
1001 cdi
->media_written
= 0;
1008 cdinfo(CD_OPEN
, "Use count for \"/dev/%s\" now %d\n",
1009 cdi
->name
, cdi
->use_count
);
1010 /* Do this on open. Don't wait for mount, because they might
1011 not be mounting, but opening with O_NONBLOCK */
1012 check_disk_change(ip
->i_bdev
);
1015 if (CDROM_CAN(CDC_LOCK
) && cdi
->options
& CDO_LOCK
) {
1016 cdi
->ops
->lock_door(cdi
, 0);
1017 cdinfo(CD_OPEN
, "door unlocked.\n");
1019 cdi
->ops
->release(cdi
);
1026 int open_for_data(struct cdrom_device_info
* cdi
)
1029 struct cdrom_device_ops
*cdo
= cdi
->ops
;
1031 cdinfo(CD_OPEN
, "entering open_for_data\n");
1032 /* Check if the driver can report drive status. If it can, we
1033 can do clever things. If it can't, well, we at least tried! */
1034 if (cdo
->drive_status
!= NULL
) {
1035 ret
= cdo
->drive_status(cdi
, CDSL_CURRENT
);
1036 cdinfo(CD_OPEN
, "drive_status=%d\n", ret
);
1037 if (ret
== CDS_TRAY_OPEN
) {
1038 cdinfo(CD_OPEN
, "the tray is open...\n");
1039 /* can/may i close it? */
1040 if (CDROM_CAN(CDC_CLOSE_TRAY
) &&
1041 cdi
->options
& CDO_AUTO_CLOSE
) {
1042 cdinfo(CD_OPEN
, "trying to close the tray.\n");
1043 ret
=cdo
->tray_move(cdi
,0);
1045 cdinfo(CD_OPEN
, "bummer. tried to close the tray but failed.\n");
1046 /* Ignore the error from the low
1047 level driver. We don't care why it
1048 couldn't close the tray. We only care
1049 that there is no disc in the drive,
1050 since that is the _REAL_ problem here.*/
1052 goto clean_up_and_return
;
1055 cdinfo(CD_OPEN
, "bummer. this drive can't close the tray.\n");
1057 goto clean_up_and_return
;
1059 /* Ok, the door should be closed now.. Check again */
1060 ret
= cdo
->drive_status(cdi
, CDSL_CURRENT
);
1061 if ((ret
== CDS_NO_DISC
) || (ret
==CDS_TRAY_OPEN
)) {
1062 cdinfo(CD_OPEN
, "bummer. the tray is still not closed.\n");
1063 cdinfo(CD_OPEN
, "tray might not contain a medium.\n");
1065 goto clean_up_and_return
;
1067 cdinfo(CD_OPEN
, "the tray is now closed.\n");
1069 /* the door should be closed now, check for the disc */
1070 ret
= cdo
->drive_status(cdi
, CDSL_CURRENT
);
1071 if (ret
!=CDS_DISC_OK
) {
1073 goto clean_up_and_return
;
1076 cdrom_count_tracks(cdi
, &tracks
);
1077 if (tracks
.error
== CDS_NO_DISC
) {
1078 cdinfo(CD_OPEN
, "bummer. no disc.\n");
1080 goto clean_up_and_return
;
1082 /* CD-Players which don't use O_NONBLOCK, workman
1083 * for example, need bit CDO_CHECK_TYPE cleared! */
1084 if (tracks
.data
==0) {
1085 if (cdi
->options
& CDO_CHECK_TYPE
) {
1086 /* give people a warning shot, now that CDO_CHECK_TYPE
1087 is the default case! */
1088 cdinfo(CD_OPEN
, "bummer. wrong media type.\n");
1089 cdinfo(CD_WARNING
, "pid %d must open device O_NONBLOCK!\n",
1090 (unsigned int)task_pid_nr(current
));
1092 goto clean_up_and_return
;
1095 cdinfo(CD_OPEN
, "wrong media type, but CDO_CHECK_TYPE not set.\n");
1099 cdinfo(CD_OPEN
, "all seems well, opening the device.\n");
1101 /* all seems well, we can open the device */
1102 ret
= cdo
->open(cdi
, 0); /* open for data */
1103 cdinfo(CD_OPEN
, "opening the device gave me %d.\n", ret
);
1104 /* After all this careful checking, we shouldn't have problems
1105 opening the device, but we don't want the device locked if
1106 this somehow fails... */
1108 cdinfo(CD_OPEN
, "open device failed.\n");
1109 goto clean_up_and_return
;
1111 if (CDROM_CAN(CDC_LOCK
) && (cdi
->options
& CDO_LOCK
)) {
1112 cdo
->lock_door(cdi
, 1);
1113 cdinfo(CD_OPEN
, "door locked.\n");
1115 cdinfo(CD_OPEN
, "device opened successfully.\n");
1118 /* Something failed. Try to unlock the drive, because some drivers
1119 (notably ide-cd) lock the drive after every command. This produced
1120 a nasty bug where after mount failed, the drive would remain locked!
1121 This ensures that the drive gets unlocked after a mount fails. This
1122 is a goto to avoid bloating the driver with redundant code. */
1123 clean_up_and_return
:
1124 cdinfo(CD_OPEN
, "open failed.\n");
1125 if (CDROM_CAN(CDC_LOCK
) && cdi
->options
& CDO_LOCK
) {
1126 cdo
->lock_door(cdi
, 0);
1127 cdinfo(CD_OPEN
, "door unlocked.\n");
1132 /* This code is similar to that in open_for_data. The routine is called
1133 whenever an audio play operation is requested.
1135 static int check_for_audio_disc(struct cdrom_device_info
* cdi
,
1136 struct cdrom_device_ops
* cdo
)
1140 cdinfo(CD_OPEN
, "entering check_for_audio_disc\n");
1141 if (!(cdi
->options
& CDO_CHECK_TYPE
))
1143 if (cdo
->drive_status
!= NULL
) {
1144 ret
= cdo
->drive_status(cdi
, CDSL_CURRENT
);
1145 cdinfo(CD_OPEN
, "drive_status=%d\n", ret
);
1146 if (ret
== CDS_TRAY_OPEN
) {
1147 cdinfo(CD_OPEN
, "the tray is open...\n");
1148 /* can/may i close it? */
1149 if (CDROM_CAN(CDC_CLOSE_TRAY
) &&
1150 cdi
->options
& CDO_AUTO_CLOSE
) {
1151 cdinfo(CD_OPEN
, "trying to close the tray.\n");
1152 ret
=cdo
->tray_move(cdi
,0);
1154 cdinfo(CD_OPEN
, "bummer. tried to close tray but failed.\n");
1155 /* Ignore the error from the low
1156 level driver. We don't care why it
1157 couldn't close the tray. We only care
1158 that there is no disc in the drive,
1159 since that is the _REAL_ problem here.*/
1163 cdinfo(CD_OPEN
, "bummer. this driver can't close the tray.\n");
1166 /* Ok, the door should be closed now.. Check again */
1167 ret
= cdo
->drive_status(cdi
, CDSL_CURRENT
);
1168 if ((ret
== CDS_NO_DISC
) || (ret
==CDS_TRAY_OPEN
)) {
1169 cdinfo(CD_OPEN
, "bummer. the tray is still not closed.\n");
1172 if (ret
!=CDS_DISC_OK
) {
1173 cdinfo(CD_OPEN
, "bummer. disc isn't ready.\n");
1176 cdinfo(CD_OPEN
, "the tray is now closed.\n");
1179 cdrom_count_tracks(cdi
, &tracks
);
1181 return(tracks
.error
);
1183 if (tracks
.audio
==0)
1184 return -EMEDIUMTYPE
;
1189 int cdrom_release(struct cdrom_device_info
*cdi
, struct file
*fp
)
1191 struct cdrom_device_ops
*cdo
= cdi
->ops
;
1192 int opened_for_data
;
1194 cdinfo(CD_CLOSE
, "entering cdrom_release\n");
1196 if (cdi
->use_count
> 0)
1199 if (cdi
->use_count
== 0) {
1200 cdinfo(CD_CLOSE
, "Use count for \"/dev/%s\" now zero\n", cdi
->name
);
1201 cdrom_dvd_rw_close_write(cdi
);
1203 if ((cdo
->capability
& CDC_LOCK
) && !keeplocked
) {
1204 cdinfo(CD_CLOSE
, "Unlocking door!\n");
1205 cdo
->lock_door(cdi
, 0);
1209 opened_for_data
= !(cdi
->options
& CDO_USE_FFLAGS
) ||
1210 !(fp
&& fp
->f_flags
& O_NONBLOCK
);
1213 * flush cache on last write release
1215 if (CDROM_CAN(CDC_RAM
) && !cdi
->use_count
&& cdi
->for_data
)
1216 cdrom_close_write(cdi
);
1219 if (cdi
->use_count
== 0) { /* last process that closes dev*/
1220 if (opened_for_data
&&
1221 cdi
->options
& CDO_AUTO_EJECT
&& CDROM_CAN(CDC_OPEN_TRAY
))
1222 cdo
->tray_move(cdi
, 1);
1227 static int cdrom_read_mech_status(struct cdrom_device_info
*cdi
,
1228 struct cdrom_changer_info
*buf
)
1230 struct packet_command cgc
;
1231 struct cdrom_device_ops
*cdo
= cdi
->ops
;
1235 * Sanyo changer isn't spec compliant (doesn't use regular change
1236 * LOAD_UNLOAD command, and it doesn't implement the mech status
1239 if (cdi
->sanyo_slot
) {
1240 buf
->hdr
.nslots
= 3;
1241 buf
->hdr
.curslot
= cdi
->sanyo_slot
== 3 ? 0 : cdi
->sanyo_slot
;
1242 for (length
= 0; length
< 3; length
++) {
1243 buf
->slots
[length
].disc_present
= 1;
1244 buf
->slots
[length
].change
= 0;
1249 length
= sizeof(struct cdrom_mechstat_header
) +
1250 cdi
->capacity
* sizeof(struct cdrom_slot
);
1252 init_cdrom_command(&cgc
, buf
, length
, CGC_DATA_READ
);
1253 cgc
.cmd
[0] = GPCMD_MECHANISM_STATUS
;
1254 cgc
.cmd
[8] = (length
>> 8) & 0xff;
1255 cgc
.cmd
[9] = length
& 0xff;
1256 return cdo
->generic_packet(cdi
, &cgc
);
1259 static int cdrom_slot_status(struct cdrom_device_info
*cdi
, int slot
)
1261 struct cdrom_changer_info
*info
;
1264 cdinfo(CD_CHANGER
, "entering cdrom_slot_status()\n");
1265 if (cdi
->sanyo_slot
)
1268 info
= kmalloc(sizeof(*info
), GFP_KERNEL
);
1272 if ((ret
= cdrom_read_mech_status(cdi
, info
)))
1275 if (info
->slots
[slot
].disc_present
)
1285 /* Return the number of slots for an ATAPI/SCSI cdrom,
1286 * return 1 if not a changer.
1288 int cdrom_number_of_slots(struct cdrom_device_info
*cdi
)
1292 struct cdrom_changer_info
*info
;
1294 cdinfo(CD_CHANGER
, "entering cdrom_number_of_slots()\n");
1295 /* cdrom_read_mech_status requires a valid value for capacity: */
1298 info
= kmalloc(sizeof(*info
), GFP_KERNEL
);
1302 if ((status
= cdrom_read_mech_status(cdi
, info
)) == 0)
1303 nslots
= info
->hdr
.nslots
;
1310 /* If SLOT < 0, unload the current slot. Otherwise, try to load SLOT. */
1311 static int cdrom_load_unload(struct cdrom_device_info
*cdi
, int slot
)
1313 struct packet_command cgc
;
1315 cdinfo(CD_CHANGER
, "entering cdrom_load_unload()\n");
1316 if (cdi
->sanyo_slot
&& slot
< 0)
1319 init_cdrom_command(&cgc
, NULL
, 0, CGC_DATA_NONE
);
1320 cgc
.cmd
[0] = GPCMD_LOAD_UNLOAD
;
1321 cgc
.cmd
[4] = 2 + (slot
>= 0);
1323 cgc
.timeout
= 60 * HZ
;
1325 /* The Sanyo 3 CD changer uses byte 7 of the
1326 GPCMD_TEST_UNIT_READY to command to switch CDs instead of
1327 using the GPCMD_LOAD_UNLOAD opcode. */
1328 if (cdi
->sanyo_slot
&& -1 < slot
) {
1329 cgc
.cmd
[0] = GPCMD_TEST_UNIT_READY
;
1331 cgc
.cmd
[4] = cgc
.cmd
[8] = 0;
1332 cdi
->sanyo_slot
= slot
? slot
: 3;
1335 return cdi
->ops
->generic_packet(cdi
, &cgc
);
1338 static int cdrom_select_disc(struct cdrom_device_info
*cdi
, int slot
)
1340 struct cdrom_changer_info
*info
;
1344 cdinfo(CD_CHANGER
, "entering cdrom_select_disc()\n");
1345 if (!CDROM_CAN(CDC_SELECT_DISC
))
1346 return -EDRIVE_CANT_DO_THIS
;
1348 (void) cdi
->ops
->media_changed(cdi
, slot
);
1350 if (slot
== CDSL_NONE
) {
1351 /* set media changed bits, on both queues */
1352 cdi
->mc_flags
= 0x3;
1353 return cdrom_load_unload(cdi
, -1);
1356 info
= kmalloc(sizeof(*info
), GFP_KERNEL
);
1360 if ((ret
= cdrom_read_mech_status(cdi
, info
))) {
1365 curslot
= info
->hdr
.curslot
;
1368 if (cdi
->use_count
> 1 || keeplocked
) {
1369 if (slot
== CDSL_CURRENT
) {
1376 /* Specifying CDSL_CURRENT will attempt to load the currnet slot,
1377 which is useful if it had been previously unloaded.
1378 Whether it can or not, it returns the current slot.
1379 Similarly, if slot happens to be the current one, we still
1381 if (slot
== CDSL_CURRENT
)
1384 /* set media changed bits on both queues */
1385 cdi
->mc_flags
= 0x3;
1386 if ((ret
= cdrom_load_unload(cdi
, slot
)))
1392 /* We want to make media_changed accessible to the user through an
1393 * ioctl. The main problem now is that we must double-buffer the
1394 * low-level implementation, to assure that the VFS and the user both
1395 * see a medium change once.
1399 int media_changed(struct cdrom_device_info
*cdi
, int queue
)
1401 unsigned int mask
= (1 << (queue
& 1));
1402 int ret
= !!(cdi
->mc_flags
& mask
);
1404 if (!CDROM_CAN(CDC_MEDIA_CHANGED
))
1406 /* changed since last call? */
1407 if (cdi
->ops
->media_changed(cdi
, CDSL_CURRENT
)) {
1408 cdi
->mc_flags
= 0x3; /* set bit on both queues */
1410 cdi
->media_written
= 0;
1412 cdi
->mc_flags
&= ~mask
; /* clear bit */
1416 int cdrom_media_changed(struct cdrom_device_info
*cdi
)
1418 /* This talks to the VFS, which doesn't like errors - just 1 or 0.
1419 * Returning "0" is always safe (media hasn't been changed). Do that
1420 * if the low-level cdrom driver dosn't support media changed. */
1421 if (cdi
== NULL
|| cdi
->ops
->media_changed
== NULL
)
1423 if (!CDROM_CAN(CDC_MEDIA_CHANGED
))
1425 return media_changed(cdi
, 0);
1428 /* badly broken, I know. Is due for a fixup anytime. */
1429 static void cdrom_count_tracks(struct cdrom_device_info
*cdi
, tracktype
* tracks
)
1431 struct cdrom_tochdr header
;
1432 struct cdrom_tocentry entry
;
1439 cdinfo(CD_COUNT_TRACKS
, "entering cdrom_count_tracks\n");
1440 if (!CDROM_CAN(CDC_PLAY_AUDIO
)) {
1441 tracks
->error
=CDS_NO_INFO
;
1444 /* Grab the TOC header so we can see how many tracks there are */
1445 if ((ret
= cdi
->ops
->audio_ioctl(cdi
, CDROMREADTOCHDR
, &header
))) {
1446 if (ret
== -ENOMEDIUM
)
1447 tracks
->error
= CDS_NO_DISC
;
1449 tracks
->error
= CDS_NO_INFO
;
1452 /* check what type of tracks are on this disc */
1453 entry
.cdte_format
= CDROM_MSF
;
1454 for (i
= header
.cdth_trk0
; i
<= header
.cdth_trk1
; i
++) {
1455 entry
.cdte_track
= i
;
1456 if (cdi
->ops
->audio_ioctl(cdi
, CDROMREADTOCENTRY
, &entry
)) {
1457 tracks
->error
=CDS_NO_INFO
;
1460 if (entry
.cdte_ctrl
& CDROM_DATA_TRACK
) {
1461 if (entry
.cdte_format
== 0x10)
1463 else if (entry
.cdte_format
== 0x20)
1469 cdinfo(CD_COUNT_TRACKS
, "track %d: format=%d, ctrl=%d\n",
1470 i
, entry
.cdte_format
, entry
.cdte_ctrl
);
1472 cdinfo(CD_COUNT_TRACKS
, "disc has %d tracks: %d=audio %d=data %d=Cd-I %d=XA\n",
1473 header
.cdth_trk1
, tracks
->audio
, tracks
->data
,
1474 tracks
->cdi
, tracks
->xa
);
1477 /* Requests to the low-level drivers will /always/ be done in the
1478 following format convention:
1480 CDROM_LBA: all data-related requests.
1481 CDROM_MSF: all audio-related requests.
1483 However, a low-level implementation is allowed to refuse this
1484 request, and return information in its own favorite format.
1486 It doesn't make sense /at all/ to ask for a play_audio in LBA
1487 format, or ask for multi-session info in MSF format. However, for
1488 backward compatibility these format requests will be satisfied, but
1489 the requests to the low-level drivers will be sanitized in the more
1490 meaningful format indicated above.
1494 void sanitize_format(union cdrom_addr
*addr
,
1495 u_char
* curr
, u_char requested
)
1497 if (*curr
== requested
)
1498 return; /* nothing to be done! */
1499 if (requested
== CDROM_LBA
) {
1500 addr
->lba
= (int) addr
->msf
.frame
+
1501 75 * (addr
->msf
.second
- 2 + 60 * addr
->msf
.minute
);
1502 } else { /* CDROM_MSF */
1503 int lba
= addr
->lba
;
1504 addr
->msf
.frame
= lba
% 75;
1507 addr
->msf
.second
= lba
% 60;
1508 addr
->msf
.minute
= lba
/ 60;
1513 void init_cdrom_command(struct packet_command
*cgc
, void *buf
, int len
,
1516 memset(cgc
, 0, sizeof(struct packet_command
));
1518 memset(buf
, 0, len
);
1519 cgc
->buffer
= (char *) buf
;
1521 cgc
->data_direction
= type
;
1522 cgc
->timeout
= CDROM_DEF_TIMEOUT
;
1527 #define copy_key(dest,src) memcpy((dest), (src), sizeof(dvd_key))
1528 #define copy_chal(dest,src) memcpy((dest), (src), sizeof(dvd_challenge))
1530 static void setup_report_key(struct packet_command
*cgc
, unsigned agid
, unsigned type
)
1532 cgc
->cmd
[0] = GPCMD_REPORT_KEY
;
1533 cgc
->cmd
[10] = type
| (agid
<< 6);
1535 case 0: case 8: case 5: {
1548 cgc
->cmd
[9] = cgc
->buflen
;
1549 cgc
->data_direction
= CGC_DATA_READ
;
1552 static void setup_send_key(struct packet_command
*cgc
, unsigned agid
, unsigned type
)
1554 cgc
->cmd
[0] = GPCMD_SEND_KEY
;
1555 cgc
->cmd
[10] = type
| (agid
<< 6);
1570 cgc
->cmd
[9] = cgc
->buflen
;
1571 cgc
->data_direction
= CGC_DATA_WRITE
;
1574 static int dvd_do_auth(struct cdrom_device_info
*cdi
, dvd_authinfo
*ai
)
1578 struct packet_command cgc
;
1579 struct cdrom_device_ops
*cdo
= cdi
->ops
;
1580 rpc_state_t rpc_state
;
1582 memset(buf
, 0, sizeof(buf
));
1583 init_cdrom_command(&cgc
, buf
, 0, CGC_DATA_READ
);
1587 case DVD_LU_SEND_AGID
:
1588 cdinfo(CD_DVD
, "entering DVD_LU_SEND_AGID\n");
1590 setup_report_key(&cgc
, ai
->lsa
.agid
, 0);
1592 if ((ret
= cdo
->generic_packet(cdi
, &cgc
)))
1595 ai
->lsa
.agid
= buf
[7] >> 6;
1596 /* Returning data, let host change state */
1599 case DVD_LU_SEND_KEY1
:
1600 cdinfo(CD_DVD
, "entering DVD_LU_SEND_KEY1\n");
1601 setup_report_key(&cgc
, ai
->lsk
.agid
, 2);
1603 if ((ret
= cdo
->generic_packet(cdi
, &cgc
)))
1606 copy_key(ai
->lsk
.key
, &buf
[4]);
1607 /* Returning data, let host change state */
1610 case DVD_LU_SEND_CHALLENGE
:
1611 cdinfo(CD_DVD
, "entering DVD_LU_SEND_CHALLENGE\n");
1612 setup_report_key(&cgc
, ai
->lsc
.agid
, 1);
1614 if ((ret
= cdo
->generic_packet(cdi
, &cgc
)))
1617 copy_chal(ai
->lsc
.chal
, &buf
[4]);
1618 /* Returning data, let host change state */
1622 case DVD_LU_SEND_TITLE_KEY
:
1623 cdinfo(CD_DVD
, "entering DVD_LU_SEND_TITLE_KEY\n");
1625 setup_report_key(&cgc
, ai
->lstk
.agid
, 4);
1626 cgc
.cmd
[5] = ai
->lstk
.lba
;
1627 cgc
.cmd
[4] = ai
->lstk
.lba
>> 8;
1628 cgc
.cmd
[3] = ai
->lstk
.lba
>> 16;
1629 cgc
.cmd
[2] = ai
->lstk
.lba
>> 24;
1631 if ((ret
= cdo
->generic_packet(cdi
, &cgc
)))
1634 ai
->lstk
.cpm
= (buf
[4] >> 7) & 1;
1635 ai
->lstk
.cp_sec
= (buf
[4] >> 6) & 1;
1636 ai
->lstk
.cgms
= (buf
[4] >> 4) & 3;
1637 copy_key(ai
->lstk
.title_key
, &buf
[5]);
1638 /* Returning data, let host change state */
1641 case DVD_LU_SEND_ASF
:
1642 cdinfo(CD_DVD
, "entering DVD_LU_SEND_ASF\n");
1643 setup_report_key(&cgc
, ai
->lsasf
.agid
, 5);
1645 if ((ret
= cdo
->generic_packet(cdi
, &cgc
)))
1648 ai
->lsasf
.asf
= buf
[7] & 1;
1651 /* LU data receive (LU changes state) */
1652 case DVD_HOST_SEND_CHALLENGE
:
1653 cdinfo(CD_DVD
, "entering DVD_HOST_SEND_CHALLENGE\n");
1654 setup_send_key(&cgc
, ai
->hsc
.agid
, 1);
1656 copy_chal(&buf
[4], ai
->hsc
.chal
);
1658 if ((ret
= cdo
->generic_packet(cdi
, &cgc
)))
1661 ai
->type
= DVD_LU_SEND_KEY1
;
1664 case DVD_HOST_SEND_KEY2
:
1665 cdinfo(CD_DVD
, "entering DVD_HOST_SEND_KEY2\n");
1666 setup_send_key(&cgc
, ai
->hsk
.agid
, 3);
1668 copy_key(&buf
[4], ai
->hsk
.key
);
1670 if ((ret
= cdo
->generic_packet(cdi
, &cgc
))) {
1671 ai
->type
= DVD_AUTH_FAILURE
;
1674 ai
->type
= DVD_AUTH_ESTABLISHED
;
1678 case DVD_INVALIDATE_AGID
:
1680 cdinfo(CD_DVD
, "entering DVD_INVALIDATE_AGID\n");
1681 setup_report_key(&cgc
, ai
->lsa
.agid
, 0x3f);
1682 if ((ret
= cdo
->generic_packet(cdi
, &cgc
)))
1686 /* Get region settings */
1687 case DVD_LU_SEND_RPC_STATE
:
1688 cdinfo(CD_DVD
, "entering DVD_LU_SEND_RPC_STATE\n");
1689 setup_report_key(&cgc
, 0, 8);
1690 memset(&rpc_state
, 0, sizeof(rpc_state_t
));
1691 cgc
.buffer
= (char *) &rpc_state
;
1693 if ((ret
= cdo
->generic_packet(cdi
, &cgc
)))
1696 ai
->lrpcs
.type
= rpc_state
.type_code
;
1697 ai
->lrpcs
.vra
= rpc_state
.vra
;
1698 ai
->lrpcs
.ucca
= rpc_state
.ucca
;
1699 ai
->lrpcs
.region_mask
= rpc_state
.region_mask
;
1700 ai
->lrpcs
.rpc_scheme
= rpc_state
.rpc_scheme
;
1703 /* Set region settings */
1704 case DVD_HOST_SEND_RPC_STATE
:
1705 cdinfo(CD_DVD
, "entering DVD_HOST_SEND_RPC_STATE\n");
1706 setup_send_key(&cgc
, 0, 6);
1708 buf
[4] = ai
->hrpcs
.pdrc
;
1710 if ((ret
= cdo
->generic_packet(cdi
, &cgc
)))
1715 cdinfo(CD_WARNING
, "Invalid DVD key ioctl (%d)\n", ai
->type
);
1722 static int dvd_read_physical(struct cdrom_device_info
*cdi
, dvd_struct
*s
)
1724 unsigned char buf
[21], *base
;
1725 struct dvd_layer
*layer
;
1726 struct packet_command cgc
;
1727 struct cdrom_device_ops
*cdo
= cdi
->ops
;
1728 int ret
, layer_num
= s
->physical
.layer_num
;
1730 if (layer_num
>= DVD_LAYERS
)
1733 init_cdrom_command(&cgc
, buf
, sizeof(buf
), CGC_DATA_READ
);
1734 cgc
.cmd
[0] = GPCMD_READ_DVD_STRUCTURE
;
1735 cgc
.cmd
[6] = layer_num
;
1736 cgc
.cmd
[7] = s
->type
;
1737 cgc
.cmd
[9] = cgc
.buflen
& 0xff;
1740 * refrain from reporting errors on non-existing layers (mainly)
1744 if ((ret
= cdo
->generic_packet(cdi
, &cgc
)))
1748 layer
= &s
->physical
.layer
[layer_num
];
1751 * place the data... really ugly, but at least we won't have to
1752 * worry about endianess in userspace.
1754 memset(layer
, 0, sizeof(*layer
));
1755 layer
->book_version
= base
[0] & 0xf;
1756 layer
->book_type
= base
[0] >> 4;
1757 layer
->min_rate
= base
[1] & 0xf;
1758 layer
->disc_size
= base
[1] >> 4;
1759 layer
->layer_type
= base
[2] & 0xf;
1760 layer
->track_path
= (base
[2] >> 4) & 1;
1761 layer
->nlayers
= (base
[2] >> 5) & 3;
1762 layer
->track_density
= base
[3] & 0xf;
1763 layer
->linear_density
= base
[3] >> 4;
1764 layer
->start_sector
= base
[5] << 16 | base
[6] << 8 | base
[7];
1765 layer
->end_sector
= base
[9] << 16 | base
[10] << 8 | base
[11];
1766 layer
->end_sector_l0
= base
[13] << 16 | base
[14] << 8 | base
[15];
1767 layer
->bca
= base
[16] >> 7;
1772 static int dvd_read_copyright(struct cdrom_device_info
*cdi
, dvd_struct
*s
)
1776 struct packet_command cgc
;
1777 struct cdrom_device_ops
*cdo
= cdi
->ops
;
1779 init_cdrom_command(&cgc
, buf
, sizeof(buf
), CGC_DATA_READ
);
1780 cgc
.cmd
[0] = GPCMD_READ_DVD_STRUCTURE
;
1781 cgc
.cmd
[6] = s
->copyright
.layer_num
;
1782 cgc
.cmd
[7] = s
->type
;
1783 cgc
.cmd
[8] = cgc
.buflen
>> 8;
1784 cgc
.cmd
[9] = cgc
.buflen
& 0xff;
1786 if ((ret
= cdo
->generic_packet(cdi
, &cgc
)))
1789 s
->copyright
.cpst
= buf
[4];
1790 s
->copyright
.rmi
= buf
[5];
1795 static int dvd_read_disckey(struct cdrom_device_info
*cdi
, dvd_struct
*s
)
1799 struct packet_command cgc
;
1800 struct cdrom_device_ops
*cdo
= cdi
->ops
;
1802 size
= sizeof(s
->disckey
.value
) + 4;
1804 if ((buf
= kmalloc(size
, GFP_KERNEL
)) == NULL
)
1807 init_cdrom_command(&cgc
, buf
, size
, CGC_DATA_READ
);
1808 cgc
.cmd
[0] = GPCMD_READ_DVD_STRUCTURE
;
1809 cgc
.cmd
[7] = s
->type
;
1810 cgc
.cmd
[8] = size
>> 8;
1811 cgc
.cmd
[9] = size
& 0xff;
1812 cgc
.cmd
[10] = s
->disckey
.agid
<< 6;
1814 if (!(ret
= cdo
->generic_packet(cdi
, &cgc
)))
1815 memcpy(s
->disckey
.value
, &buf
[4], sizeof(s
->disckey
.value
));
1821 static int dvd_read_bca(struct cdrom_device_info
*cdi
, dvd_struct
*s
)
1824 u_char buf
[4 + 188];
1825 struct packet_command cgc
;
1826 struct cdrom_device_ops
*cdo
= cdi
->ops
;
1828 init_cdrom_command(&cgc
, buf
, sizeof(buf
), CGC_DATA_READ
);
1829 cgc
.cmd
[0] = GPCMD_READ_DVD_STRUCTURE
;
1830 cgc
.cmd
[7] = s
->type
;
1831 cgc
.cmd
[9] = cgc
.buflen
& 0xff;
1833 if ((ret
= cdo
->generic_packet(cdi
, &cgc
)))
1836 s
->bca
.len
= buf
[0] << 8 | buf
[1];
1837 if (s
->bca
.len
< 12 || s
->bca
.len
> 188) {
1838 cdinfo(CD_WARNING
, "Received invalid BCA length (%d)\n", s
->bca
.len
);
1841 memcpy(s
->bca
.value
, &buf
[4], s
->bca
.len
);
1846 static int dvd_read_manufact(struct cdrom_device_info
*cdi
, dvd_struct
*s
)
1850 struct packet_command cgc
;
1851 struct cdrom_device_ops
*cdo
= cdi
->ops
;
1853 size
= sizeof(s
->manufact
.value
) + 4;
1855 if ((buf
= kmalloc(size
, GFP_KERNEL
)) == NULL
)
1858 init_cdrom_command(&cgc
, buf
, size
, CGC_DATA_READ
);
1859 cgc
.cmd
[0] = GPCMD_READ_DVD_STRUCTURE
;
1860 cgc
.cmd
[7] = s
->type
;
1861 cgc
.cmd
[8] = size
>> 8;
1862 cgc
.cmd
[9] = size
& 0xff;
1864 if ((ret
= cdo
->generic_packet(cdi
, &cgc
))) {
1869 s
->manufact
.len
= buf
[0] << 8 | buf
[1];
1870 if (s
->manufact
.len
< 0 || s
->manufact
.len
> 2048) {
1871 cdinfo(CD_WARNING
, "Received invalid manufacture info length"
1872 " (%d)\n", s
->manufact
.len
);
1875 memcpy(s
->manufact
.value
, &buf
[4], s
->manufact
.len
);
1882 static int dvd_read_struct(struct cdrom_device_info
*cdi
, dvd_struct
*s
)
1885 case DVD_STRUCT_PHYSICAL
:
1886 return dvd_read_physical(cdi
, s
);
1888 case DVD_STRUCT_COPYRIGHT
:
1889 return dvd_read_copyright(cdi
, s
);
1891 case DVD_STRUCT_DISCKEY
:
1892 return dvd_read_disckey(cdi
, s
);
1894 case DVD_STRUCT_BCA
:
1895 return dvd_read_bca(cdi
, s
);
1897 case DVD_STRUCT_MANUFACT
:
1898 return dvd_read_manufact(cdi
, s
);
1901 cdinfo(CD_WARNING
, ": Invalid DVD structure read requested (%d)\n",
1907 int cdrom_mode_sense(struct cdrom_device_info
*cdi
,
1908 struct packet_command
*cgc
,
1909 int page_code
, int page_control
)
1911 struct cdrom_device_ops
*cdo
= cdi
->ops
;
1913 memset(cgc
->cmd
, 0, sizeof(cgc
->cmd
));
1915 cgc
->cmd
[0] = GPCMD_MODE_SENSE_10
;
1916 cgc
->cmd
[2] = page_code
| (page_control
<< 6);
1917 cgc
->cmd
[7] = cgc
->buflen
>> 8;
1918 cgc
->cmd
[8] = cgc
->buflen
& 0xff;
1919 cgc
->data_direction
= CGC_DATA_READ
;
1920 return cdo
->generic_packet(cdi
, cgc
);
1923 int cdrom_mode_select(struct cdrom_device_info
*cdi
,
1924 struct packet_command
*cgc
)
1926 struct cdrom_device_ops
*cdo
= cdi
->ops
;
1928 memset(cgc
->cmd
, 0, sizeof(cgc
->cmd
));
1929 memset(cgc
->buffer
, 0, 2);
1930 cgc
->cmd
[0] = GPCMD_MODE_SELECT_10
;
1931 cgc
->cmd
[1] = 0x10; /* PF */
1932 cgc
->cmd
[7] = cgc
->buflen
>> 8;
1933 cgc
->cmd
[8] = cgc
->buflen
& 0xff;
1934 cgc
->data_direction
= CGC_DATA_WRITE
;
1935 return cdo
->generic_packet(cdi
, cgc
);
1938 static int cdrom_read_subchannel(struct cdrom_device_info
*cdi
,
1939 struct cdrom_subchnl
*subchnl
, int mcn
)
1941 struct cdrom_device_ops
*cdo
= cdi
->ops
;
1942 struct packet_command cgc
;
1946 init_cdrom_command(&cgc
, buffer
, 16, CGC_DATA_READ
);
1947 cgc
.cmd
[0] = GPCMD_READ_SUBCHANNEL
;
1948 cgc
.cmd
[1] = 2; /* MSF addressing */
1949 cgc
.cmd
[2] = 0x40; /* request subQ data */
1950 cgc
.cmd
[3] = mcn
? 2 : 1;
1953 if ((ret
= cdo
->generic_packet(cdi
, &cgc
)))
1956 subchnl
->cdsc_audiostatus
= cgc
.buffer
[1];
1957 subchnl
->cdsc_format
= CDROM_MSF
;
1958 subchnl
->cdsc_ctrl
= cgc
.buffer
[5] & 0xf;
1959 subchnl
->cdsc_trk
= cgc
.buffer
[6];
1960 subchnl
->cdsc_ind
= cgc
.buffer
[7];
1962 subchnl
->cdsc_reladdr
.msf
.minute
= cgc
.buffer
[13];
1963 subchnl
->cdsc_reladdr
.msf
.second
= cgc
.buffer
[14];
1964 subchnl
->cdsc_reladdr
.msf
.frame
= cgc
.buffer
[15];
1965 subchnl
->cdsc_absaddr
.msf
.minute
= cgc
.buffer
[9];
1966 subchnl
->cdsc_absaddr
.msf
.second
= cgc
.buffer
[10];
1967 subchnl
->cdsc_absaddr
.msf
.frame
= cgc
.buffer
[11];
1973 * Specific READ_10 interface
1975 static int cdrom_read_cd(struct cdrom_device_info
*cdi
,
1976 struct packet_command
*cgc
, int lba
,
1977 int blocksize
, int nblocks
)
1979 struct cdrom_device_ops
*cdo
= cdi
->ops
;
1981 memset(&cgc
->cmd
, 0, sizeof(cgc
->cmd
));
1982 cgc
->cmd
[0] = GPCMD_READ_10
;
1983 cgc
->cmd
[2] = (lba
>> 24) & 0xff;
1984 cgc
->cmd
[3] = (lba
>> 16) & 0xff;
1985 cgc
->cmd
[4] = (lba
>> 8) & 0xff;
1986 cgc
->cmd
[5] = lba
& 0xff;
1987 cgc
->cmd
[6] = (nblocks
>> 16) & 0xff;
1988 cgc
->cmd
[7] = (nblocks
>> 8) & 0xff;
1989 cgc
->cmd
[8] = nblocks
& 0xff;
1990 cgc
->buflen
= blocksize
* nblocks
;
1991 return cdo
->generic_packet(cdi
, cgc
);
1994 /* very generic interface for reading the various types of blocks */
1995 static int cdrom_read_block(struct cdrom_device_info
*cdi
,
1996 struct packet_command
*cgc
,
1997 int lba
, int nblocks
, int format
, int blksize
)
1999 struct cdrom_device_ops
*cdo
= cdi
->ops
;
2001 memset(&cgc
->cmd
, 0, sizeof(cgc
->cmd
));
2002 cgc
->cmd
[0] = GPCMD_READ_CD
;
2003 /* expected sector size - cdda,mode1,etc. */
2004 cgc
->cmd
[1] = format
<< 2;
2005 /* starting address */
2006 cgc
->cmd
[2] = (lba
>> 24) & 0xff;
2007 cgc
->cmd
[3] = (lba
>> 16) & 0xff;
2008 cgc
->cmd
[4] = (lba
>> 8) & 0xff;
2009 cgc
->cmd
[5] = lba
& 0xff;
2010 /* number of blocks */
2011 cgc
->cmd
[6] = (nblocks
>> 16) & 0xff;
2012 cgc
->cmd
[7] = (nblocks
>> 8) & 0xff;
2013 cgc
->cmd
[8] = nblocks
& 0xff;
2014 cgc
->buflen
= blksize
* nblocks
;
2016 /* set the header info returned */
2018 case CD_FRAMESIZE_RAW0
: cgc
->cmd
[9] = 0x58; break;
2019 case CD_FRAMESIZE_RAW1
: cgc
->cmd
[9] = 0x78; break;
2020 case CD_FRAMESIZE_RAW
: cgc
->cmd
[9] = 0xf8; break;
2021 default : cgc
->cmd
[9] = 0x10;
2024 return cdo
->generic_packet(cdi
, cgc
);
2027 static int cdrom_read_cdda_old(struct cdrom_device_info
*cdi
, __u8 __user
*ubuf
,
2028 int lba
, int nframes
)
2030 struct packet_command cgc
;
2034 cdi
->last_sense
= 0;
2036 memset(&cgc
, 0, sizeof(cgc
));
2039 * start with will ra.nframes size, back down if alloc fails
2043 cgc
.buffer
= kmalloc(CD_FRAMESIZE_RAW
* nr
, GFP_KERNEL
);
2053 if (!access_ok(VERIFY_WRITE
, ubuf
, nframes
* CD_FRAMESIZE_RAW
)) {
2058 cgc
.data_direction
= CGC_DATA_READ
;
2059 while (nframes
> 0) {
2063 ret
= cdrom_read_block(cdi
, &cgc
, lba
, nr
, 1, CD_FRAMESIZE_RAW
);
2066 if (__copy_to_user(ubuf
, cgc
.buffer
, CD_FRAMESIZE_RAW
* nr
)) {
2070 ubuf
+= CD_FRAMESIZE_RAW
* nr
;
2079 static int cdrom_read_cdda_bpc(struct cdrom_device_info
*cdi
, __u8 __user
*ubuf
,
2080 int lba
, int nframes
)
2082 struct request_queue
*q
= cdi
->disk
->queue
;
2091 rq
= blk_get_request(q
, READ
, GFP_KERNEL
);
2095 cdi
->last_sense
= 0;
2099 if (cdi
->cdda_method
== CDDA_BPC_SINGLE
)
2101 if (nr
* CD_FRAMESIZE_RAW
> (q
->max_sectors
<< 9))
2102 nr
= (q
->max_sectors
<< 9) / CD_FRAMESIZE_RAW
;
2104 len
= nr
* CD_FRAMESIZE_RAW
;
2106 ret
= blk_rq_map_user(q
, rq
, ubuf
, len
);
2110 memset(rq
->cmd
, 0, sizeof(rq
->cmd
));
2111 rq
->cmd
[0] = GPCMD_READ_CD
;
2112 rq
->cmd
[1] = 1 << 2;
2113 rq
->cmd
[2] = (lba
>> 24) & 0xff;
2114 rq
->cmd
[3] = (lba
>> 16) & 0xff;
2115 rq
->cmd
[4] = (lba
>> 8) & 0xff;
2116 rq
->cmd
[5] = lba
& 0xff;
2117 rq
->cmd
[6] = (nr
>> 16) & 0xff;
2118 rq
->cmd
[7] = (nr
>> 8) & 0xff;
2119 rq
->cmd
[8] = nr
& 0xff;
2123 rq
->cmd_type
= REQ_TYPE_BLOCK_PC
;
2124 rq
->timeout
= 60 * HZ
;
2127 if (blk_execute_rq(q
, cdi
->disk
, rq
, 0)) {
2128 struct request_sense
*s
= rq
->sense
;
2130 cdi
->last_sense
= s
->sense_key
;
2133 if (blk_rq_unmap_user(bio
))
2144 blk_put_request(rq
);
2148 static int cdrom_read_cdda(struct cdrom_device_info
*cdi
, __u8 __user
*ubuf
,
2149 int lba
, int nframes
)
2153 if (cdi
->cdda_method
== CDDA_OLD
)
2154 return cdrom_read_cdda_old(cdi
, ubuf
, lba
, nframes
);
2158 * for anything else than success and io error, we need to retry
2160 ret
= cdrom_read_cdda_bpc(cdi
, ubuf
, lba
, nframes
);
2161 if (!ret
|| ret
!= -EIO
)
2165 * I've seen drives get sense 4/8/3 udma crc errors on multi
2166 * frame dma, so drop to single frame dma if we need to
2168 if (cdi
->cdda_method
== CDDA_BPC_FULL
&& nframes
> 1) {
2169 printk("cdrom: dropping to single frame dma\n");
2170 cdi
->cdda_method
= CDDA_BPC_SINGLE
;
2175 * so we have an io error of some sort with multi frame dma. if the
2176 * condition wasn't a hardware error
2177 * problems, not for any error
2179 if (cdi
->last_sense
!= 0x04 && cdi
->last_sense
!= 0x0b)
2182 printk("cdrom: dropping to old style cdda (sense=%x)\n", cdi
->last_sense
);
2183 cdi
->cdda_method
= CDDA_OLD
;
2184 return cdrom_read_cdda_old(cdi
, ubuf
, lba
, nframes
);
2187 static int cdrom_ioctl_multisession(struct cdrom_device_info
*cdi
,
2190 struct cdrom_multisession ms_info
;
2191 u8 requested_format
;
2194 cdinfo(CD_DO_IOCTL
, "entering CDROMMULTISESSION\n");
2196 if (!(cdi
->ops
->capability
& CDC_MULTI_SESSION
))
2199 if (copy_from_user(&ms_info
, argp
, sizeof(ms_info
)))
2202 requested_format
= ms_info
.addr_format
;
2203 if (requested_format
!= CDROM_MSF
&& requested_format
!= CDROM_LBA
)
2205 ms_info
.addr_format
= CDROM_LBA
;
2207 ret
= cdi
->ops
->get_last_session(cdi
, &ms_info
);
2211 sanitize_format(&ms_info
.addr
, &ms_info
.addr_format
, requested_format
);
2213 if (copy_to_user(argp
, &ms_info
, sizeof(ms_info
)))
2216 cdinfo(CD_DO_IOCTL
, "CDROMMULTISESSION successful\n");
2220 static int cdrom_ioctl_eject(struct cdrom_device_info
*cdi
)
2222 cdinfo(CD_DO_IOCTL
, "entering CDROMEJECT\n");
2224 if (!CDROM_CAN(CDC_OPEN_TRAY
))
2226 if (cdi
->use_count
!= 1 || keeplocked
)
2228 if (CDROM_CAN(CDC_LOCK
)) {
2229 int ret
= cdi
->ops
->lock_door(cdi
, 0);
2234 return cdi
->ops
->tray_move(cdi
, 1);
2237 static int cdrom_ioctl_closetray(struct cdrom_device_info
*cdi
)
2239 cdinfo(CD_DO_IOCTL
, "entering CDROMCLOSETRAY\n");
2241 if (!CDROM_CAN(CDC_CLOSE_TRAY
))
2243 return cdi
->ops
->tray_move(cdi
, 0);
2246 static int cdrom_ioctl_eject_sw(struct cdrom_device_info
*cdi
,
2249 cdinfo(CD_DO_IOCTL
, "entering CDROMEJECT_SW\n");
2251 if (!CDROM_CAN(CDC_OPEN_TRAY
))
2256 cdi
->options
&= ~(CDO_AUTO_CLOSE
| CDO_AUTO_EJECT
);
2258 cdi
->options
|= CDO_AUTO_CLOSE
| CDO_AUTO_EJECT
;
2262 static int cdrom_ioctl_media_changed(struct cdrom_device_info
*cdi
,
2265 struct cdrom_changer_info
*info
;
2268 cdinfo(CD_DO_IOCTL
, "entering CDROM_MEDIA_CHANGED\n");
2270 if (!CDROM_CAN(CDC_MEDIA_CHANGED
))
2273 /* cannot select disc or select current disc */
2274 if (!CDROM_CAN(CDC_SELECT_DISC
) || arg
== CDSL_CURRENT
)
2275 return media_changed(cdi
, 1);
2277 if ((unsigned int)arg
>= cdi
->capacity
)
2280 info
= kmalloc(sizeof(*info
), GFP_KERNEL
);
2284 ret
= cdrom_read_mech_status(cdi
, info
);
2286 ret
= info
->slots
[arg
].change
;
2291 static int cdrom_ioctl_set_options(struct cdrom_device_info
*cdi
,
2294 cdinfo(CD_DO_IOCTL
, "entering CDROM_SET_OPTIONS\n");
2297 * Options need to be in sync with capability.
2298 * Too late for that, so we have to check each one separately.
2301 case CDO_USE_FFLAGS
:
2302 case CDO_CHECK_TYPE
:
2305 if (!CDROM_CAN(CDC_LOCK
))
2309 return cdi
->options
;
2310 /* default is basically CDO_[AUTO_CLOSE|AUTO_EJECT] */
2312 if (!CDROM_CAN(arg
))
2315 cdi
->options
|= (int) arg
;
2316 return cdi
->options
;
2319 static int cdrom_ioctl_clear_options(struct cdrom_device_info
*cdi
,
2322 cdinfo(CD_DO_IOCTL
, "entering CDROM_CLEAR_OPTIONS\n");
2324 cdi
->options
&= ~(int) arg
;
2325 return cdi
->options
;
2328 static int cdrom_ioctl_select_speed(struct cdrom_device_info
*cdi
,
2331 cdinfo(CD_DO_IOCTL
, "entering CDROM_SELECT_SPEED\n");
2333 if (!CDROM_CAN(CDC_SELECT_SPEED
))
2335 return cdi
->ops
->select_speed(cdi
, arg
);
2338 static int cdrom_ioctl_select_disc(struct cdrom_device_info
*cdi
,
2341 cdinfo(CD_DO_IOCTL
, "entering CDROM_SELECT_DISC\n");
2343 if (!CDROM_CAN(CDC_SELECT_DISC
))
2346 if (arg
!= CDSL_CURRENT
&& arg
!= CDSL_NONE
) {
2347 if ((int)arg
>= cdi
->capacity
)
2352 * ->select_disc is a hook to allow a driver-specific way of
2353 * seleting disc. However, since there is no equivalent hook for
2354 * cdrom_slot_status this may not actually be useful...
2356 if (cdi
->ops
->select_disc
)
2357 return cdi
->ops
->select_disc(cdi
, arg
);
2359 cdinfo(CD_CHANGER
, "Using generic cdrom_select_disc()\n");
2360 return cdrom_select_disc(cdi
, arg
);
2363 static int cdrom_ioctl_reset(struct cdrom_device_info
*cdi
,
2364 struct block_device
*bdev
)
2366 cdinfo(CD_DO_IOCTL
, "entering CDROM_RESET\n");
2368 if (!capable(CAP_SYS_ADMIN
))
2370 if (!CDROM_CAN(CDC_RESET
))
2372 invalidate_bdev(bdev
);
2373 return cdi
->ops
->reset(cdi
);
2376 static int cdrom_ioctl_lock_door(struct cdrom_device_info
*cdi
,
2379 cdinfo(CD_DO_IOCTL
, "%socking door.\n", arg
? "L" : "Unl");
2381 if (!CDROM_CAN(CDC_LOCK
))
2382 return -EDRIVE_CANT_DO_THIS
;
2384 keeplocked
= arg
? 1 : 0;
2387 * Don't unlock the door on multiple opens by default, but allow
2390 if (cdi
->use_count
!= 1 && !arg
&& !capable(CAP_SYS_ADMIN
))
2392 return cdi
->ops
->lock_door(cdi
, arg
);
2395 static int cdrom_ioctl_debug(struct cdrom_device_info
*cdi
,
2398 cdinfo(CD_DO_IOCTL
, "%sabling debug.\n", arg
? "En" : "Dis");
2400 if (!capable(CAP_SYS_ADMIN
))
2402 debug
= arg
? 1 : 0;
2406 static int cdrom_ioctl_get_capability(struct cdrom_device_info
*cdi
)
2408 cdinfo(CD_DO_IOCTL
, "entering CDROM_GET_CAPABILITY\n");
2409 return (cdi
->ops
->capability
& ~cdi
->mask
);
2413 * The following function is implemented, although very few audio
2414 * discs give Universal Product Code information, which should just be
2415 * the Medium Catalog Number on the box. Note, that the way the code
2416 * is written on the CD is /not/ uniform across all discs!
2418 static int cdrom_ioctl_get_mcn(struct cdrom_device_info
*cdi
,
2421 struct cdrom_mcn mcn
;
2424 cdinfo(CD_DO_IOCTL
, "entering CDROM_GET_MCN\n");
2426 if (!(cdi
->ops
->capability
& CDC_MCN
))
2428 ret
= cdi
->ops
->get_mcn(cdi
, &mcn
);
2432 if (copy_to_user(argp
, &mcn
, sizeof(mcn
)))
2434 cdinfo(CD_DO_IOCTL
, "CDROM_GET_MCN successful\n");
2438 static int cdrom_ioctl_drive_status(struct cdrom_device_info
*cdi
,
2441 cdinfo(CD_DO_IOCTL
, "entering CDROM_DRIVE_STATUS\n");
2443 if (!(cdi
->ops
->capability
& CDC_DRIVE_STATUS
))
2445 if (!CDROM_CAN(CDC_SELECT_DISC
) ||
2446 (arg
== CDSL_CURRENT
|| arg
== CDSL_NONE
))
2447 return cdi
->ops
->drive_status(cdi
, CDSL_CURRENT
);
2448 if (((int)arg
>= cdi
->capacity
))
2450 return cdrom_slot_status(cdi
, arg
);
2454 * Ok, this is where problems start. The current interface for the
2455 * CDROM_DISC_STATUS ioctl is flawed. It makes the false assumption that
2456 * CDs are all CDS_DATA_1 or all CDS_AUDIO, etc. Unfortunatly, while this
2457 * is often the case, it is also very common for CDs to have some tracks
2458 * with data, and some tracks with audio. Just because I feel like it,
2459 * I declare the following to be the best way to cope. If the CD has ANY
2460 * data tracks on it, it will be returned as a data CD. If it has any XA
2461 * tracks, I will return it as that. Now I could simplify this interface
2462 * by combining these returns with the above, but this more clearly
2463 * demonstrates the problem with the current interface. Too bad this
2464 * wasn't designed to use bitmasks... -Erik
2466 * Well, now we have the option CDS_MIXED: a mixed-type CD.
2467 * User level programmers might feel the ioctl is not very useful.
2470 static int cdrom_ioctl_disc_status(struct cdrom_device_info
*cdi
)
2474 cdinfo(CD_DO_IOCTL
, "entering CDROM_DISC_STATUS\n");
2476 cdrom_count_tracks(cdi
, &tracks
);
2478 return tracks
.error
;
2480 /* Policy mode on */
2481 if (tracks
.audio
> 0) {
2482 if (!tracks
.data
&& !tracks
.cdi
&& !tracks
.xa
)
2492 if (tracks
.data
> 0)
2494 /* Policy mode off */
2496 cdinfo(CD_WARNING
,"This disc doesn't have any tracks I recognize!\n");
2500 static int cdrom_ioctl_changer_nslots(struct cdrom_device_info
*cdi
)
2502 cdinfo(CD_DO_IOCTL
, "entering CDROM_CHANGER_NSLOTS\n");
2503 return cdi
->capacity
;
2506 static int cdrom_ioctl_get_subchnl(struct cdrom_device_info
*cdi
,
2509 struct cdrom_subchnl q
;
2513 /* cdinfo(CD_DO_IOCTL,"entering CDROMSUBCHNL\n");*/
2515 if (!CDROM_CAN(CDC_PLAY_AUDIO
))
2517 if (copy_from_user(&q
, argp
, sizeof(q
)))
2520 requested
= q
.cdsc_format
;
2521 if (requested
!= CDROM_MSF
&& requested
!= CDROM_LBA
)
2523 q
.cdsc_format
= CDROM_MSF
;
2525 ret
= cdi
->ops
->audio_ioctl(cdi
, CDROMSUBCHNL
, &q
);
2529 back
= q
.cdsc_format
; /* local copy */
2530 sanitize_format(&q
.cdsc_absaddr
, &back
, requested
);
2531 sanitize_format(&q
.cdsc_reladdr
, &q
.cdsc_format
, requested
);
2533 if (copy_to_user(argp
, &q
, sizeof(q
)))
2535 /* cdinfo(CD_DO_IOCTL, "CDROMSUBCHNL successful\n"); */
2539 static int cdrom_ioctl_read_tochdr(struct cdrom_device_info
*cdi
,
2542 struct cdrom_tochdr header
;
2545 /* cdinfo(CD_DO_IOCTL, "entering CDROMREADTOCHDR\n"); */
2547 if (!CDROM_CAN(CDC_PLAY_AUDIO
))
2549 if (copy_from_user(&header
, argp
, sizeof(header
)))
2552 ret
= cdi
->ops
->audio_ioctl(cdi
, CDROMREADTOCHDR
, &header
);
2556 if (copy_to_user(argp
, &header
, sizeof(header
)))
2558 /* cdinfo(CD_DO_IOCTL, "CDROMREADTOCHDR successful\n"); */
2562 static int cdrom_ioctl_read_tocentry(struct cdrom_device_info
*cdi
,
2565 struct cdrom_tocentry entry
;
2566 u8 requested_format
;
2569 /* cdinfo(CD_DO_IOCTL, "entering CDROMREADTOCENTRY\n"); */
2571 if (!CDROM_CAN(CDC_PLAY_AUDIO
))
2573 if (copy_from_user(&entry
, argp
, sizeof(entry
)))
2576 requested_format
= entry
.cdte_format
;
2577 if (requested_format
!= CDROM_MSF
&& requested_format
!= CDROM_LBA
)
2579 /* make interface to low-level uniform */
2580 entry
.cdte_format
= CDROM_MSF
;
2581 ret
= cdi
->ops
->audio_ioctl(cdi
, CDROMREADTOCENTRY
, &entry
);
2584 sanitize_format(&entry
.cdte_addr
, &entry
.cdte_format
, requested_format
);
2586 if (copy_to_user(argp
, &entry
, sizeof(entry
)))
2588 /* cdinfo(CD_DO_IOCTL, "CDROMREADTOCENTRY successful\n"); */
2592 static int cdrom_ioctl_play_msf(struct cdrom_device_info
*cdi
,
2595 struct cdrom_msf msf
;
2597 cdinfo(CD_DO_IOCTL
, "entering CDROMPLAYMSF\n");
2599 if (!CDROM_CAN(CDC_PLAY_AUDIO
))
2601 if (copy_from_user(&msf
, argp
, sizeof(msf
)))
2603 return cdi
->ops
->audio_ioctl(cdi
, CDROMPLAYMSF
, &msf
);
2606 static int cdrom_ioctl_play_trkind(struct cdrom_device_info
*cdi
,
2612 cdinfo(CD_DO_IOCTL
, "entering CDROMPLAYTRKIND\n");
2614 if (!CDROM_CAN(CDC_PLAY_AUDIO
))
2616 if (copy_from_user(&ti
, argp
, sizeof(ti
)))
2619 ret
= check_for_audio_disc(cdi
, cdi
->ops
);
2622 return cdi
->ops
->audio_ioctl(cdi
, CDROMPLAYTRKIND
, &ti
);
2624 static int cdrom_ioctl_volctrl(struct cdrom_device_info
*cdi
,
2627 struct cdrom_volctrl volume
;
2629 cdinfo(CD_DO_IOCTL
, "entering CDROMVOLCTRL\n");
2631 if (!CDROM_CAN(CDC_PLAY_AUDIO
))
2633 if (copy_from_user(&volume
, argp
, sizeof(volume
)))
2635 return cdi
->ops
->audio_ioctl(cdi
, CDROMVOLCTRL
, &volume
);
2638 static int cdrom_ioctl_volread(struct cdrom_device_info
*cdi
,
2641 struct cdrom_volctrl volume
;
2644 cdinfo(CD_DO_IOCTL
, "entering CDROMVOLREAD\n");
2646 if (!CDROM_CAN(CDC_PLAY_AUDIO
))
2649 ret
= cdi
->ops
->audio_ioctl(cdi
, CDROMVOLREAD
, &volume
);
2653 if (copy_to_user(argp
, &volume
, sizeof(volume
)))
2658 static int cdrom_ioctl_audioctl(struct cdrom_device_info
*cdi
,
2663 cdinfo(CD_DO_IOCTL
, "doing audio ioctl (start/stop/pause/resume)\n");
2665 if (!CDROM_CAN(CDC_PLAY_AUDIO
))
2667 ret
= check_for_audio_disc(cdi
, cdi
->ops
);
2670 return cdi
->ops
->audio_ioctl(cdi
, cmd
, NULL
);
2674 * Just about every imaginable ioctl is supported in the Uniform layer
2676 * ATAPI / SCSI specific code now mainly resides in mmc_ioctl().
2678 int cdrom_ioctl(struct file
* file
, struct cdrom_device_info
*cdi
,
2679 struct inode
*ip
, unsigned int cmd
, unsigned long arg
)
2681 void __user
*argp
= (void __user
*)arg
;
2683 struct gendisk
*disk
= ip
->i_bdev
->bd_disk
;
2686 * Try the generic SCSI command ioctl's first.
2688 ret
= scsi_cmd_ioctl(file
, disk
->queue
, disk
, cmd
, argp
);
2693 case CDROMMULTISESSION
:
2694 return cdrom_ioctl_multisession(cdi
, argp
);
2696 return cdrom_ioctl_eject(cdi
);
2697 case CDROMCLOSETRAY
:
2698 return cdrom_ioctl_closetray(cdi
);
2700 return cdrom_ioctl_eject_sw(cdi
, arg
);
2701 case CDROM_MEDIA_CHANGED
:
2702 return cdrom_ioctl_media_changed(cdi
, arg
);
2703 case CDROM_SET_OPTIONS
:
2704 return cdrom_ioctl_set_options(cdi
, arg
);
2705 case CDROM_CLEAR_OPTIONS
:
2706 return cdrom_ioctl_clear_options(cdi
, arg
);
2707 case CDROM_SELECT_SPEED
:
2708 return cdrom_ioctl_select_speed(cdi
, arg
);
2709 case CDROM_SELECT_DISC
:
2710 return cdrom_ioctl_select_disc(cdi
, arg
);
2712 return cdrom_ioctl_reset(cdi
, ip
->i_bdev
);
2713 case CDROM_LOCKDOOR
:
2714 return cdrom_ioctl_lock_door(cdi
, arg
);
2716 return cdrom_ioctl_debug(cdi
, arg
);
2717 case CDROM_GET_CAPABILITY
:
2718 return cdrom_ioctl_get_capability(cdi
);
2720 return cdrom_ioctl_get_mcn(cdi
, argp
);
2721 case CDROM_DRIVE_STATUS
:
2722 return cdrom_ioctl_drive_status(cdi
, arg
);
2723 case CDROM_DISC_STATUS
:
2724 return cdrom_ioctl_disc_status(cdi
);
2725 case CDROM_CHANGER_NSLOTS
:
2726 return cdrom_ioctl_changer_nslots(cdi
);
2730 * Use the ioctls that are implemented through the generic_packet()
2731 * interface. this may look at bit funny, but if -ENOTTY is
2732 * returned that particular ioctl is not implemented and we
2733 * let it go through the device specific ones.
2735 if (CDROM_CAN(CDC_GENERIC_PACKET
)) {
2736 ret
= mmc_ioctl(cdi
, cmd
, arg
);
2742 * Note: most of the cdinfo() calls are commented out here,
2743 * because they fill up the sys log when CD players poll
2748 return cdrom_ioctl_get_subchnl(cdi
, argp
);
2749 case CDROMREADTOCHDR
:
2750 return cdrom_ioctl_read_tochdr(cdi
, argp
);
2751 case CDROMREADTOCENTRY
:
2752 return cdrom_ioctl_read_tocentry(cdi
, argp
);
2754 return cdrom_ioctl_play_msf(cdi
, argp
);
2755 case CDROMPLAYTRKIND
:
2756 return cdrom_ioctl_play_trkind(cdi
, argp
);
2758 return cdrom_ioctl_volctrl(cdi
, argp
);
2760 return cdrom_ioctl_volread(cdi
, argp
);
2765 return cdrom_ioctl_audioctl(cdi
, cmd
);
2772 * Required when we need to use READ_10 to issue other than 2048 block
2775 static int cdrom_switch_blocksize(struct cdrom_device_info
*cdi
, int size
)
2777 struct cdrom_device_ops
*cdo
= cdi
->ops
;
2778 struct packet_command cgc
;
2779 struct modesel_head mh
;
2781 memset(&mh
, 0, sizeof(mh
));
2782 mh
.block_desc_length
= 0x08;
2783 mh
.block_length_med
= (size
>> 8) & 0xff;
2784 mh
.block_length_lo
= size
& 0xff;
2786 memset(&cgc
, 0, sizeof(cgc
));
2788 cgc
.cmd
[1] = 1 << 4;
2790 cgc
.buflen
= sizeof(mh
);
2791 cgc
.buffer
= (char *) &mh
;
2792 cgc
.data_direction
= CGC_DATA_WRITE
;
2793 mh
.block_desc_length
= 0x08;
2794 mh
.block_length_med
= (size
>> 8) & 0xff;
2795 mh
.block_length_lo
= size
& 0xff;
2797 return cdo
->generic_packet(cdi
, &cgc
);
2800 static int mmc_ioctl(struct cdrom_device_info
*cdi
, unsigned int cmd
,
2803 struct cdrom_device_ops
*cdo
= cdi
->ops
;
2804 struct packet_command cgc
;
2805 struct request_sense sense
;
2806 unsigned char buffer
[32];
2809 memset(&cgc
, 0, sizeof(cgc
));
2811 /* build a unified command and queue it through
2812 cdo->generic_packet() */
2815 case CDROMREADMODE1
:
2816 case CDROMREADMODE2
: {
2817 struct cdrom_msf msf
;
2818 int blocksize
= 0, format
= 0, lba
;
2822 blocksize
= CD_FRAMESIZE_RAW
;
2824 case CDROMREADMODE1
:
2825 blocksize
= CD_FRAMESIZE
;
2828 case CDROMREADMODE2
:
2829 blocksize
= CD_FRAMESIZE_RAW0
;
2832 IOCTL_IN(arg
, struct cdrom_msf
, msf
);
2833 lba
= msf_to_lba(msf
.cdmsf_min0
,msf
.cdmsf_sec0
,msf
.cdmsf_frame0
);
2834 /* FIXME: we need upper bound checking, too!! */
2837 cgc
.buffer
= kmalloc(blocksize
, GFP_KERNEL
);
2838 if (cgc
.buffer
== NULL
)
2840 memset(&sense
, 0, sizeof(sense
));
2842 cgc
.data_direction
= CGC_DATA_READ
;
2843 ret
= cdrom_read_block(cdi
, &cgc
, lba
, 1, format
, blocksize
);
2844 if (ret
&& sense
.sense_key
==0x05 && sense
.asc
==0x20 && sense
.ascq
==0x00) {
2846 * SCSI-II devices are not required to support
2847 * READ_CD, so let's try switching block size
2849 /* FIXME: switch back again... */
2850 if ((ret
= cdrom_switch_blocksize(cdi
, blocksize
))) {
2855 ret
= cdrom_read_cd(cdi
, &cgc
, lba
, blocksize
, 1);
2856 ret
|= cdrom_switch_blocksize(cdi
, blocksize
);
2858 if (!ret
&& copy_to_user((char __user
*)arg
, cgc
.buffer
, blocksize
))
2863 case CDROMREADAUDIO
: {
2864 struct cdrom_read_audio ra
;
2867 IOCTL_IN(arg
, struct cdrom_read_audio
, ra
);
2869 if (ra
.addr_format
== CDROM_MSF
)
2870 lba
= msf_to_lba(ra
.addr
.msf
.minute
,
2873 else if (ra
.addr_format
== CDROM_LBA
)
2878 /* FIXME: we need upper bound checking, too!! */
2879 if (lba
< 0 || ra
.nframes
<= 0 || ra
.nframes
> CD_FRAMES
)
2882 return cdrom_read_cdda(cdi
, ra
.buf
, lba
, ra
.nframes
);
2884 case CDROMSUBCHNL
: {
2885 struct cdrom_subchnl q
;
2886 u_char requested
, back
;
2887 IOCTL_IN(arg
, struct cdrom_subchnl
, q
);
2888 requested
= q
.cdsc_format
;
2889 if (!((requested
== CDROM_MSF
) ||
2890 (requested
== CDROM_LBA
)))
2892 q
.cdsc_format
= CDROM_MSF
;
2893 if ((ret
= cdrom_read_subchannel(cdi
, &q
, 0)))
2895 back
= q
.cdsc_format
; /* local copy */
2896 sanitize_format(&q
.cdsc_absaddr
, &back
, requested
);
2897 sanitize_format(&q
.cdsc_reladdr
, &q
.cdsc_format
, requested
);
2898 IOCTL_OUT(arg
, struct cdrom_subchnl
, q
);
2899 /* cdinfo(CD_DO_IOCTL, "CDROMSUBCHNL successful\n"); */
2902 case CDROMPLAYMSF
: {
2903 struct cdrom_msf msf
;
2904 cdinfo(CD_DO_IOCTL
, "entering CDROMPLAYMSF\n");
2905 IOCTL_IN(arg
, struct cdrom_msf
, msf
);
2906 cgc
.cmd
[0] = GPCMD_PLAY_AUDIO_MSF
;
2907 cgc
.cmd
[3] = msf
.cdmsf_min0
;
2908 cgc
.cmd
[4] = msf
.cdmsf_sec0
;
2909 cgc
.cmd
[5] = msf
.cdmsf_frame0
;
2910 cgc
.cmd
[6] = msf
.cdmsf_min1
;
2911 cgc
.cmd
[7] = msf
.cdmsf_sec1
;
2912 cgc
.cmd
[8] = msf
.cdmsf_frame1
;
2913 cgc
.data_direction
= CGC_DATA_NONE
;
2914 return cdo
->generic_packet(cdi
, &cgc
);
2916 case CDROMPLAYBLK
: {
2917 struct cdrom_blk blk
;
2918 cdinfo(CD_DO_IOCTL
, "entering CDROMPLAYBLK\n");
2919 IOCTL_IN(arg
, struct cdrom_blk
, blk
);
2920 cgc
.cmd
[0] = GPCMD_PLAY_AUDIO_10
;
2921 cgc
.cmd
[2] = (blk
.from
>> 24) & 0xff;
2922 cgc
.cmd
[3] = (blk
.from
>> 16) & 0xff;
2923 cgc
.cmd
[4] = (blk
.from
>> 8) & 0xff;
2924 cgc
.cmd
[5] = blk
.from
& 0xff;
2925 cgc
.cmd
[7] = (blk
.len
>> 8) & 0xff;
2926 cgc
.cmd
[8] = blk
.len
& 0xff;
2927 cgc
.data_direction
= CGC_DATA_NONE
;
2928 return cdo
->generic_packet(cdi
, &cgc
);
2931 case CDROMVOLREAD
: {
2932 struct cdrom_volctrl volctrl
;
2933 char mask
[sizeof(buffer
)];
2934 unsigned short offset
;
2936 cdinfo(CD_DO_IOCTL
, "entering CDROMVOLUME\n");
2938 IOCTL_IN(arg
, struct cdrom_volctrl
, volctrl
);
2940 cgc
.buffer
= buffer
;
2942 if ((ret
= cdrom_mode_sense(cdi
, &cgc
, GPMODE_AUDIO_CTL_PAGE
, 0)))
2945 /* originally the code depended on buffer[1] to determine
2946 how much data is available for transfer. buffer[1] is
2947 unfortunately ambigious and the only reliable way seem
2948 to be to simply skip over the block descriptor... */
2949 offset
= 8 + be16_to_cpu(*(__be16
*)(buffer
+6));
2951 if (offset
+ 16 > sizeof(buffer
))
2954 if (offset
+ 16 > cgc
.buflen
) {
2955 cgc
.buflen
= offset
+16;
2956 ret
= cdrom_mode_sense(cdi
, &cgc
,
2957 GPMODE_AUDIO_CTL_PAGE
, 0);
2963 if ((buffer
[offset
] & 0x3f) != GPMODE_AUDIO_CTL_PAGE
||
2964 buffer
[offset
+1] < 14)
2967 /* now we have the current volume settings. if it was only
2968 a CDROMVOLREAD, return these values */
2969 if (cmd
== CDROMVOLREAD
) {
2970 volctrl
.channel0
= buffer
[offset
+9];
2971 volctrl
.channel1
= buffer
[offset
+11];
2972 volctrl
.channel2
= buffer
[offset
+13];
2973 volctrl
.channel3
= buffer
[offset
+15];
2974 IOCTL_OUT(arg
, struct cdrom_volctrl
, volctrl
);
2978 /* get the volume mask */
2980 if ((ret
= cdrom_mode_sense(cdi
, &cgc
,
2981 GPMODE_AUDIO_CTL_PAGE
, 1)))
2984 buffer
[offset
+9] = volctrl
.channel0
& mask
[offset
+9];
2985 buffer
[offset
+11] = volctrl
.channel1
& mask
[offset
+11];
2986 buffer
[offset
+13] = volctrl
.channel2
& mask
[offset
+13];
2987 buffer
[offset
+15] = volctrl
.channel3
& mask
[offset
+15];
2990 cgc
.buffer
= buffer
+ offset
- 8;
2991 memset(cgc
.buffer
, 0, 8);
2992 return cdrom_mode_select(cdi
, &cgc
);
2997 cdinfo(CD_DO_IOCTL
, "entering CDROMSTART/CDROMSTOP\n");
2998 cgc
.cmd
[0] = GPCMD_START_STOP_UNIT
;
3000 cgc
.cmd
[4] = (cmd
== CDROMSTART
) ? 1 : 0;
3001 cgc
.data_direction
= CGC_DATA_NONE
;
3002 return cdo
->generic_packet(cdi
, &cgc
);
3007 cdinfo(CD_DO_IOCTL
, "entering CDROMPAUSE/CDROMRESUME\n");
3008 cgc
.cmd
[0] = GPCMD_PAUSE_RESUME
;
3009 cgc
.cmd
[8] = (cmd
== CDROMRESUME
) ? 1 : 0;
3010 cgc
.data_direction
= CGC_DATA_NONE
;
3011 return cdo
->generic_packet(cdi
, &cgc
);
3014 case DVD_READ_STRUCT
: {
3016 int size
= sizeof(dvd_struct
);
3017 if (!CDROM_CAN(CDC_DVD
))
3019 if ((s
= kmalloc(size
, GFP_KERNEL
)) == NULL
)
3021 cdinfo(CD_DO_IOCTL
, "entering DVD_READ_STRUCT\n");
3022 if (copy_from_user(s
, (dvd_struct __user
*)arg
, size
)) {
3026 if ((ret
= dvd_read_struct(cdi
, s
))) {
3030 if (copy_to_user((dvd_struct __user
*)arg
, s
, size
))
3038 if (!CDROM_CAN(CDC_DVD
))
3040 cdinfo(CD_DO_IOCTL
, "entering DVD_AUTH\n");
3041 IOCTL_IN(arg
, dvd_authinfo
, ai
);
3042 if ((ret
= dvd_do_auth (cdi
, &ai
)))
3044 IOCTL_OUT(arg
, dvd_authinfo
, ai
);
3048 case CDROM_NEXT_WRITABLE
: {
3050 cdinfo(CD_DO_IOCTL
, "entering CDROM_NEXT_WRITABLE\n");
3051 if ((ret
= cdrom_get_next_writable(cdi
, &next
)))
3053 IOCTL_OUT(arg
, long, next
);
3056 case CDROM_LAST_WRITTEN
: {
3058 cdinfo(CD_DO_IOCTL
, "entering CDROM_LAST_WRITTEN\n");
3059 if ((ret
= cdrom_get_last_written(cdi
, &last
)))
3061 IOCTL_OUT(arg
, long, last
);
3069 static int cdrom_get_track_info(struct cdrom_device_info
*cdi
, __u16 track
, __u8 type
,
3070 track_information
*ti
)
3072 struct cdrom_device_ops
*cdo
= cdi
->ops
;
3073 struct packet_command cgc
;
3076 init_cdrom_command(&cgc
, ti
, 8, CGC_DATA_READ
);
3077 cgc
.cmd
[0] = GPCMD_READ_TRACK_RZONE_INFO
;
3078 cgc
.cmd
[1] = type
& 3;
3079 cgc
.cmd
[4] = (track
& 0xff00) >> 8;
3080 cgc
.cmd
[5] = track
& 0xff;
3084 if ((ret
= cdo
->generic_packet(cdi
, &cgc
)))
3087 buflen
= be16_to_cpu(ti
->track_information_length
) +
3088 sizeof(ti
->track_information_length
);
3090 if (buflen
> sizeof(track_information
))
3091 buflen
= sizeof(track_information
);
3093 cgc
.cmd
[8] = cgc
.buflen
= buflen
;
3094 if ((ret
= cdo
->generic_packet(cdi
, &cgc
)))
3097 /* return actual fill size */
3101 /* requires CD R/RW */
3102 static int cdrom_get_disc_info(struct cdrom_device_info
*cdi
, disc_information
*di
)
3104 struct cdrom_device_ops
*cdo
= cdi
->ops
;
3105 struct packet_command cgc
;
3108 /* set up command and get the disc info */
3109 init_cdrom_command(&cgc
, di
, sizeof(*di
), CGC_DATA_READ
);
3110 cgc
.cmd
[0] = GPCMD_READ_DISC_INFO
;
3111 cgc
.cmd
[8] = cgc
.buflen
= 2;
3114 if ((ret
= cdo
->generic_packet(cdi
, &cgc
)))
3117 /* not all drives have the same disc_info length, so requeue
3118 * packet with the length the drive tells us it can supply
3120 buflen
= be16_to_cpu(di
->disc_information_length
) +
3121 sizeof(di
->disc_information_length
);
3123 if (buflen
> sizeof(disc_information
))
3124 buflen
= sizeof(disc_information
);
3126 cgc
.cmd
[8] = cgc
.buflen
= buflen
;
3127 if ((ret
= cdo
->generic_packet(cdi
, &cgc
)))
3130 /* return actual fill size */
3134 /* return the last written block on the CD-R media. this is for the udf
3136 int cdrom_get_last_written(struct cdrom_device_info
*cdi
, long *last_written
)
3138 struct cdrom_tocentry toc
;
3139 disc_information di
;
3140 track_information ti
;
3142 int ret
= -1, ti_size
;
3144 if (!CDROM_CAN(CDC_GENERIC_PACKET
))
3147 ret
= cdrom_get_disc_info(cdi
, &di
);
3148 if (ret
< (int)(offsetof(typeof(di
), last_track_lsb
)
3149 + sizeof(di
.last_track_lsb
)))
3152 /* if unit didn't return msb, it's zeroed by cdrom_get_disc_info */
3153 last_track
= (di
.last_track_msb
<< 8) | di
.last_track_lsb
;
3154 ti_size
= cdrom_get_track_info(cdi
, last_track
, 1, &ti
);
3155 if (ti_size
< (int)offsetof(typeof(ti
), track_start
))
3158 /* if this track is blank, try the previous. */
3163 ti_size
= cdrom_get_track_info(cdi
, last_track
, 1, &ti
);
3166 if (ti_size
< (int)(offsetof(typeof(ti
), track_size
)
3167 + sizeof(ti
.track_size
)))
3170 /* if last recorded field is valid, return it. */
3171 if (ti
.lra_v
&& ti_size
>= (int)(offsetof(typeof(ti
), last_rec_address
)
3172 + sizeof(ti
.last_rec_address
))) {
3173 *last_written
= be32_to_cpu(ti
.last_rec_address
);
3175 /* make it up instead */
3176 *last_written
= be32_to_cpu(ti
.track_start
) +
3177 be32_to_cpu(ti
.track_size
);
3179 *last_written
-= (be32_to_cpu(ti
.free_blocks
) + 7);
3183 /* this is where we end up if the drive either can't do a
3184 GPCMD_READ_DISC_INFO or GPCMD_READ_TRACK_RZONE_INFO or if
3185 it doesn't give enough information or fails. then we return
3186 the toc contents. */
3188 toc
.cdte_format
= CDROM_MSF
;
3189 toc
.cdte_track
= CDROM_LEADOUT
;
3190 if ((ret
= cdi
->ops
->audio_ioctl(cdi
, CDROMREADTOCENTRY
, &toc
)))
3192 sanitize_format(&toc
.cdte_addr
, &toc
.cdte_format
, CDROM_LBA
);
3193 *last_written
= toc
.cdte_addr
.lba
;
3197 /* return the next writable block. also for udf file system. */
3198 static int cdrom_get_next_writable(struct cdrom_device_info
*cdi
, long *next_writable
)
3200 disc_information di
;
3201 track_information ti
;
3205 if (!CDROM_CAN(CDC_GENERIC_PACKET
))
3206 goto use_last_written
;
3208 ret
= cdrom_get_disc_info(cdi
, &di
);
3209 if (ret
< 0 || ret
< offsetof(typeof(di
), last_track_lsb
)
3210 + sizeof(di
.last_track_lsb
))
3211 goto use_last_written
;
3213 /* if unit didn't return msb, it's zeroed by cdrom_get_disc_info */
3214 last_track
= (di
.last_track_msb
<< 8) | di
.last_track_lsb
;
3215 ti_size
= cdrom_get_track_info(cdi
, last_track
, 1, &ti
);
3216 if (ti_size
< 0 || ti_size
< offsetof(typeof(ti
), track_start
))
3217 goto use_last_written
;
3219 /* if this track is blank, try the previous. */
3221 if (last_track
== 1)
3222 goto use_last_written
;
3224 ti_size
= cdrom_get_track_info(cdi
, last_track
, 1, &ti
);
3226 goto use_last_written
;
3229 /* if next recordable address field is valid, use it. */
3230 if (ti
.nwa_v
&& ti_size
>= offsetof(typeof(ti
), next_writable
)
3231 + sizeof(ti
.next_writable
)) {
3232 *next_writable
= be32_to_cpu(ti
.next_writable
);
3237 if ((ret
= cdrom_get_last_written(cdi
, next_writable
))) {
3241 *next_writable
+= 7;
3246 EXPORT_SYMBOL(cdrom_get_last_written
);
3247 EXPORT_SYMBOL(register_cdrom
);
3248 EXPORT_SYMBOL(unregister_cdrom
);
3249 EXPORT_SYMBOL(cdrom_open
);
3250 EXPORT_SYMBOL(cdrom_release
);
3251 EXPORT_SYMBOL(cdrom_ioctl
);
3252 EXPORT_SYMBOL(cdrom_media_changed
);
3253 EXPORT_SYMBOL(cdrom_number_of_slots
);
3254 EXPORT_SYMBOL(cdrom_mode_select
);
3255 EXPORT_SYMBOL(cdrom_mode_sense
);
3256 EXPORT_SYMBOL(init_cdrom_command
);
3257 EXPORT_SYMBOL(cdrom_get_media_event
);
3259 #ifdef CONFIG_SYSCTL
3261 #define CDROM_STR_SIZE 1000
3263 static struct cdrom_sysctl_settings
{
3264 char info
[CDROM_STR_SIZE
]; /* general info */
3265 int autoclose
; /* close tray upon mount, etc */
3266 int autoeject
; /* eject on umount */
3267 int debug
; /* turn on debugging messages */
3268 int lock
; /* lock the door on device open */
3269 int check
; /* check media type */
3270 } cdrom_sysctl_settings
;
3272 enum cdrom_print_option
{
3279 static int cdrom_print_info(const char *header
, int val
, char *info
,
3280 int *pos
, enum cdrom_print_option option
)
3282 const int max_size
= sizeof(cdrom_sysctl_settings
.info
);
3283 struct cdrom_device_info
*cdi
;
3286 ret
= scnprintf(info
+ *pos
, max_size
- *pos
, header
);
3292 list_for_each_entry(cdi
, &cdrom_list
, list
) {
3295 ret
= scnprintf(info
+ *pos
, max_size
- *pos
,
3299 ret
= scnprintf(info
+ *pos
, max_size
- *pos
,
3300 "\t%d", cdi
->speed
);
3303 ret
= scnprintf(info
+ *pos
, max_size
- *pos
,
3304 "\t%d", cdi
->capacity
);
3306 case CTL_CAPABILITY
:
3307 ret
= scnprintf(info
+ *pos
, max_size
- *pos
,
3308 "\t%d", CDROM_CAN(val
) != 0);
3311 printk(KERN_INFO
"cdrom: invalid option%d\n", option
);
3322 static int cdrom_sysctl_info(ctl_table
*ctl
, int write
, struct file
* filp
,
3323 void __user
*buffer
, size_t *lenp
, loff_t
*ppos
)
3326 char *info
= cdrom_sysctl_settings
.info
;
3327 const int max_size
= sizeof(cdrom_sysctl_settings
.info
);
3329 if (!*lenp
|| (*ppos
&& !write
)) {
3334 mutex_lock(&cdrom_mutex
);
3336 pos
= sprintf(info
, "CD-ROM information, " VERSION
"\n");
3338 if (cdrom_print_info("\ndrive name:\t", 0, info
, &pos
, CTL_NAME
))
3340 if (cdrom_print_info("\ndrive speed:\t", 0, info
, &pos
, CTL_SPEED
))
3342 if (cdrom_print_info("\ndrive # of slots:", 0, info
, &pos
, CTL_SLOTS
))
3344 if (cdrom_print_info("\nCan close tray:\t",
3345 CDC_CLOSE_TRAY
, info
, &pos
, CTL_CAPABILITY
))
3347 if (cdrom_print_info("\nCan open tray:\t",
3348 CDC_OPEN_TRAY
, info
, &pos
, CTL_CAPABILITY
))
3350 if (cdrom_print_info("\nCan lock tray:\t",
3351 CDC_LOCK
, info
, &pos
, CTL_CAPABILITY
))
3353 if (cdrom_print_info("\nCan change speed:",
3354 CDC_SELECT_SPEED
, info
, &pos
, CTL_CAPABILITY
))
3356 if (cdrom_print_info("\nCan select disk:",
3357 CDC_SELECT_DISC
, info
, &pos
, CTL_CAPABILITY
))
3359 if (cdrom_print_info("\nCan read multisession:",
3360 CDC_MULTI_SESSION
, info
, &pos
, CTL_CAPABILITY
))
3362 if (cdrom_print_info("\nCan read MCN:\t",
3363 CDC_MCN
, info
, &pos
, CTL_CAPABILITY
))
3365 if (cdrom_print_info("\nReports media changed:",
3366 CDC_MEDIA_CHANGED
, info
, &pos
, CTL_CAPABILITY
))
3368 if (cdrom_print_info("\nCan play audio:\t",
3369 CDC_PLAY_AUDIO
, info
, &pos
, CTL_CAPABILITY
))
3371 if (cdrom_print_info("\nCan write CD-R:\t",
3372 CDC_CD_R
, info
, &pos
, CTL_CAPABILITY
))
3374 if (cdrom_print_info("\nCan write CD-RW:",
3375 CDC_CD_RW
, info
, &pos
, CTL_CAPABILITY
))
3377 if (cdrom_print_info("\nCan read DVD:\t",
3378 CDC_DVD
, info
, &pos
, CTL_CAPABILITY
))
3380 if (cdrom_print_info("\nCan write DVD-R:",
3381 CDC_DVD_R
, info
, &pos
, CTL_CAPABILITY
))
3383 if (cdrom_print_info("\nCan write DVD-RAM:",
3384 CDC_DVD_RAM
, info
, &pos
, CTL_CAPABILITY
))
3386 if (cdrom_print_info("\nCan read MRW:\t",
3387 CDC_MRW
, info
, &pos
, CTL_CAPABILITY
))
3389 if (cdrom_print_info("\nCan write MRW:\t",
3390 CDC_MRW_W
, info
, &pos
, CTL_CAPABILITY
))
3392 if (cdrom_print_info("\nCan write RAM:\t",
3393 CDC_RAM
, info
, &pos
, CTL_CAPABILITY
))
3395 if (!scnprintf(info
+ pos
, max_size
- pos
, "\n\n"))
3398 mutex_unlock(&cdrom_mutex
);
3399 return proc_dostring(ctl
, write
, filp
, buffer
, lenp
, ppos
);
3401 printk(KERN_INFO
"cdrom: info buffer too small\n");
3405 /* Unfortunately, per device settings are not implemented through
3406 procfs/sysctl yet. When they are, this will naturally disappear. For now
3407 just update all drives. Later this will become the template on which
3408 new registered drives will be based. */
3409 static void cdrom_update_settings(void)
3411 struct cdrom_device_info
*cdi
;
3413 mutex_lock(&cdrom_mutex
);
3414 list_for_each_entry(cdi
, &cdrom_list
, list
) {
3415 if (autoclose
&& CDROM_CAN(CDC_CLOSE_TRAY
))
3416 cdi
->options
|= CDO_AUTO_CLOSE
;
3417 else if (!autoclose
)
3418 cdi
->options
&= ~CDO_AUTO_CLOSE
;
3419 if (autoeject
&& CDROM_CAN(CDC_OPEN_TRAY
))
3420 cdi
->options
|= CDO_AUTO_EJECT
;
3421 else if (!autoeject
)
3422 cdi
->options
&= ~CDO_AUTO_EJECT
;
3423 if (lockdoor
&& CDROM_CAN(CDC_LOCK
))
3424 cdi
->options
|= CDO_LOCK
;
3426 cdi
->options
&= ~CDO_LOCK
;
3427 if (check_media_type
)
3428 cdi
->options
|= CDO_CHECK_TYPE
;
3430 cdi
->options
&= ~CDO_CHECK_TYPE
;
3432 mutex_unlock(&cdrom_mutex
);
3435 static int cdrom_sysctl_handler(ctl_table
*ctl
, int write
, struct file
* filp
,
3436 void __user
*buffer
, size_t *lenp
, loff_t
*ppos
)
3440 ret
= proc_dointvec(ctl
, write
, filp
, buffer
, lenp
, ppos
);
3444 /* we only care for 1 or 0. */
3445 autoclose
= !!cdrom_sysctl_settings
.autoclose
;
3446 autoeject
= !!cdrom_sysctl_settings
.autoeject
;
3447 debug
= !!cdrom_sysctl_settings
.debug
;
3448 lockdoor
= !!cdrom_sysctl_settings
.lock
;
3449 check_media_type
= !!cdrom_sysctl_settings
.check
;
3451 /* update the option flags according to the changes. we
3452 don't have per device options through sysctl yet,
3453 but we will have and then this will disappear. */
3454 cdrom_update_settings();
3460 /* Place files in /proc/sys/dev/cdrom */
3461 static ctl_table cdrom_table
[] = {
3464 .data
= &cdrom_sysctl_settings
.info
,
3465 .maxlen
= CDROM_STR_SIZE
,
3467 .proc_handler
= &cdrom_sysctl_info
,
3470 .procname
= "autoclose",
3471 .data
= &cdrom_sysctl_settings
.autoclose
,
3472 .maxlen
= sizeof(int),
3474 .proc_handler
= &cdrom_sysctl_handler
,
3477 .procname
= "autoeject",
3478 .data
= &cdrom_sysctl_settings
.autoeject
,
3479 .maxlen
= sizeof(int),
3481 .proc_handler
= &cdrom_sysctl_handler
,
3484 .procname
= "debug",
3485 .data
= &cdrom_sysctl_settings
.debug
,
3486 .maxlen
= sizeof(int),
3488 .proc_handler
= &cdrom_sysctl_handler
,
3492 .data
= &cdrom_sysctl_settings
.lock
,
3493 .maxlen
= sizeof(int),
3495 .proc_handler
= &cdrom_sysctl_handler
,
3498 .procname
= "check_media",
3499 .data
= &cdrom_sysctl_settings
.check
,
3500 .maxlen
= sizeof(int),
3502 .proc_handler
= &cdrom_sysctl_handler
3507 static ctl_table cdrom_cdrom_table
[] = {
3509 .ctl_name
= DEV_CDROM
,
3510 .procname
= "cdrom",
3513 .child
= cdrom_table
,
3518 /* Make sure that /proc/sys/dev is there */
3519 static ctl_table cdrom_root_table
[] = {
3521 .ctl_name
= CTL_DEV
,
3525 .child
= cdrom_cdrom_table
,
3529 static struct ctl_table_header
*cdrom_sysctl_header
;
3531 static void cdrom_sysctl_register(void)
3533 static int initialized
;
3535 if (initialized
== 1)
3538 cdrom_sysctl_header
= register_sysctl_table(cdrom_root_table
);
3540 /* set the defaults */
3541 cdrom_sysctl_settings
.autoclose
= autoclose
;
3542 cdrom_sysctl_settings
.autoeject
= autoeject
;
3543 cdrom_sysctl_settings
.debug
= debug
;
3544 cdrom_sysctl_settings
.lock
= lockdoor
;
3545 cdrom_sysctl_settings
.check
= check_media_type
;
3550 static void cdrom_sysctl_unregister(void)
3552 if (cdrom_sysctl_header
)
3553 unregister_sysctl_table(cdrom_sysctl_header
);
3556 #else /* CONFIG_SYSCTL */
3558 static void cdrom_sysctl_register(void)
3562 static void cdrom_sysctl_unregister(void)
3566 #endif /* CONFIG_SYSCTL */
3568 static int __init
cdrom_init(void)
3570 cdrom_sysctl_register();
3575 static void __exit
cdrom_exit(void)
3577 printk(KERN_INFO
"Uniform CD-ROM driver unloaded\n");
3578 cdrom_sysctl_unregister();
3581 module_init(cdrom_init
);
3582 module_exit(cdrom_exit
);
3583 MODULE_LICENSE("GPL");