1 /* linux/drivers/cdrom/cdrom.c
2 Copyright (c) 1996, 1997 David A. van Leeuwen.
3 Copyright (c) 1997, 1998 Erik Andersen <andersee@debian.org>
4 Copyright (c) 1998, 1999 Jens Axboe <axboe@image.dk>
6 May be copied or modified under the terms of the GNU General Public
7 License. See linux/COPYING for more information.
9 Uniform CD-ROM driver for Linux.
10 See Documentation/cdrom/cdrom-standard.tex for usage information.
12 The routines in the file provide a uniform interface between the
13 software that uses CD-ROMs and the various low-level drivers that
14 actually talk to the hardware. Suggestions are welcome.
15 Patches that work are more welcome though. ;-)
18 ----------------------------------
20 -- Modify sysctl/proc interface. I plan on having one directory per
21 drive, with entries for outputing general drive information, and sysctl
22 based tunable parameters such as whether the tray should auto-close for
23 that drive. Suggestions (or patches) for this welcome!
27 ----------------------------------
28 1.00 Date Unknown -- David van Leeuwen <david@tm.tno.nl>
29 -- Initial version by David A. van Leeuwen. I don't have a detailed
30 changelog for the 1.x series, David?
32 2.00 Dec 2, 1997 -- Erik Andersen <andersee@debian.org>
33 -- New maintainer! As David A. van Leeuwen has been too busy to actively
34 maintain and improve this driver, I am now carrying on the torch. If
35 you have a problem with this driver, please feel free to contact me.
37 -- Added (rudimentary) sysctl interface. I realize this is really weak
38 right now, and is _very_ badly implemented. It will be improved...
40 -- Modified CDROM_DISC_STATUS so that it is now incorporated into
41 the Uniform CD-ROM driver via the cdrom_count_tracks function.
42 The cdrom_count_tracks function helps resolve some of the false
43 assumptions of the CDROM_DISC_STATUS ioctl, and is also used to check
44 for the correct media type when mounting or playing audio from a CD.
46 -- Remove the calls to verify_area and only use the copy_from_user and
47 copy_to_user stuff, since these calls now provide their own memory
48 checking with the 2.1.x kernels.
50 -- Major update to return codes so that errors from low-level drivers
51 are passed on through (thanks to Gerd Knorr for pointing out this
54 -- Made it so if a function isn't implemented in a low-level driver,
55 ENOSYS is now returned instead of EINVAL.
57 -- Simplified some complex logic so that the source code is easier to read.
59 -- Other stuff I probably forgot to mention (lots of changes).
61 2.01 to 2.11 Dec 1997-Jan 1998
62 -- TO-DO! Write changelogs for 2.01 to 2.12.
64 2.12 Jan 24, 1998 -- Erik Andersen <andersee@debian.org>
65 -- Fixed a bug in the IOCTL_IN and IOCTL_OUT macros. It turns out that
66 copy_*_user does not return EFAULT on error, but instead returns the number
67 of bytes not copied. I was returning whatever non-zero stuff came back from
68 the copy_*_user functions directly, which would result in strange errors.
70 2.13 July 17, 1998 -- Erik Andersen <andersee@debian.org>
71 -- Fixed a bug in CDROM_SELECT_SPEED where you couldn't lower the speed
72 of the drive. Thanks to Tobias Ringstr|m <tori@prosolvia.se> for pointing
73 this out and providing a simple fix.
74 -- Fixed the procfs-unload-module bug with the fill_inode procfs callback.
75 thanks to Andrea Arcangeli
76 -- Fixed it so that the /proc entry now also shows up when cdrom is
77 compiled into the kernel. Before it only worked when loaded as a module.
79 2.14 August 17, 1998 -- Erik Andersen <andersee@debian.org>
80 -- Fixed a bug in cdrom_media_changed and handling of reporting that
81 the media had changed for devices that _don't_ implement media_changed.
82 Thanks to Grant R. Guenther <grant@torque.net> for spotting this bug.
83 -- Made a few things more pedanticly correct.
85 2.50 Oct 19, 1998 - Jens Axboe <axboe@image.dk>
86 -- New maintainers! Erik was too busy to continue the work on the driver,
87 so now Chris Zwilling <chris@cloudnet.com> and Jens Axboe <axboe@image.dk>
88 will do their best to follow in his footsteps
90 2.51 Dec 20, 1998 - Jens Axboe <axboe@image.dk>
91 -- Check if drive is capable of doing what we ask before blindly changing
92 cdi->options in various ioctl.
93 -- Added version to proc entry.
95 2.52 Jan 16, 1999 - Jens Axboe <axboe@image.dk>
96 -- Fixed an error in open_for_data where we would sometimes not return
97 the correct error value. Thanks Huba Gaspar <huba@softcell.hu>.
98 -- Fixed module usage count - usage was based on /proc/sys/dev
99 instead of /proc/sys/dev/cdrom. This could lead to an oops when other
100 modules had entries in dev. Feb 02 - real bug was in sysctl.c where
101 dev would be removed even though it was used. cdrom.c just illuminated
104 2.53 Feb 22, 1999 - Jens Axboe <axboe@image.dk>
105 -- Fixup of several ioctl calls, in particular CDROM_SET_OPTIONS has
106 been "rewritten" because capabilities and options aren't in sync. They
108 -- Added CDROM_LOCKDOOR ioctl. Locks the door and keeps it that way.
109 -- Added CDROM_RESET ioctl.
110 -- Added CDROM_DEBUG ioctl. Enable debug messages on-the-fly.
111 -- Added CDROM_GET_CAPABILITY ioctl. This relieves userspace programs
112 from parsing /proc/sys/dev/cdrom/info.
114 2.54 Mar 15, 1999 - Jens Axboe <axboe@image.dk>
115 -- Check capability mask from low level driver when counting tracks as
116 per suggestion from Corey J. Scotts <cstotts@blue.weeg.uiowa.edu>.
118 2.55 Apr 25, 1999 - Jens Axboe <axboe@image.dk>
119 -- autoclose was mistakenly checked against CDC_OPEN_TRAY instead of
121 -- proc info didn't mask against capabilities mask.
123 3.00 Aug 5, 1999 - Jens Axboe <axboe@image.dk>
124 -- Unified audio ioctl handling across CD-ROM drivers. A lot of the
125 code was duplicated before. Drives that support the generic packet
126 interface are now being fed packets from here instead.
127 -- First attempt at adding support for MMC2 commands - for DVD and
128 CD-R(W) drives. Only the DVD parts are in now - the interface used is
129 the same as for the audio ioctls.
130 -- ioctl cleanups. if a drive couldn't play audio, it didn't get
131 a change to perform device specific ioctls as well.
132 -- Defined CDROM_CAN(CDC_XXX) for checking the capabilities.
133 -- Put in sysctl files for autoclose, autoeject, check_media, debug,
135 -- /proc/sys/dev/cdrom/info has been updated to also contain info about
136 CD-Rx and DVD capabilities.
137 -- Now default to checking media type.
138 -- CDROM_SEND_PACKET ioctl added. The infrastructure was in place for
139 doing this anyway, with the generic_packet addition.
141 3.01 Aug 6, 1999 - Jens Axboe <axboe@image.dk>
142 -- Fix up the sysctl handling so that the option flags get set
144 -- Fix up ioctl handling so the device specific ones actually get
147 3.02 Aug 8, 1999 - Jens Axboe <axboe@image.dk>
148 -- Fixed volume control on SCSI drives (or others with longer audio
150 -- Fixed a couple of DVD minors. Thanks to Andrew T. Veliath
151 <andrewtv@usa.net> for telling me and for having defined the various
152 DVD structures and ioctls in the first place! He designed the original
153 DVD patches for ide-cd and while I rearranged and unified them, the
154 interface is still the same.
156 3.03 Sep 1, 1999 - Jens Axboe <axboe@image.dk>
157 -- Moved the rest of the audio ioctls from the CD-ROM drivers here. Only
158 CDROMREADTOCENTRY and CDROMREADTOCHDR are left.
159 -- Moved the CDROMREADxxx ioctls in here.
160 -- Defined the cdrom_get_last_written and cdrom_get_next_block as ioctls
161 and exported functions.
162 -- Erik Andersen <andersen@xmission.com> modified all SCMD_ commands
163 to now read GPCMD_ for the new generic packet interface. All low level
164 drivers are updated as well.
165 -- Various other cleanups.
167 3.04 Sep 12, 1999 - Jens Axboe <axboe@image.dk>
168 -- Fixed a couple of possible memory leaks (if an operation failed and
169 we didn't free the buffer before returning the error).
170 -- Integrated Uniform CD Changer handling from Richard Sharman
171 <rsharman@pobox.com>.
172 -- Defined CD_DVD and CD_CHANGER log levels.
173 -- Fixed the CDROMREADxxx ioctls.
174 -- CDROMPLAYTRKIND uses the GPCMD_PLAY_AUDIO_MSF command - too few
175 drives supported it. We lose the index part, however.
176 -- Small modifications to accommodate opens of /dev/hdc1, required
177 for ide-cd to handle multisession discs.
178 -- Export cdrom_mode_sense and cdrom_mode_select.
179 -- init_cdrom_command() for setting up a cgc command.
181 3.05 Oct 24, 1999 - Jens Axboe <axboe@image.dk>
182 -- Changed the interface for CDROM_SEND_PACKET. Before it was virtually
183 impossible to send the drive data in a sensible way.
184 -- Lowered stack usage in mmc_ioctl(), dvd_read_disckey(), and
186 -- Added setup of write mode for packet writing.
187 -- Fixed CDDA ripping with cdda2wav - accept much larger requests of
188 number of frames and split the reads in blocks of 8.
190 3.06 Dec 13, 1999 - Jens Axboe <axboe@image.dk>
191 -- Added support for changing the region of DVD drives.
192 -- Added sense data to generic command.
194 3.07 Feb 2, 2000 - Jens Axboe <axboe@suse.de>
195 -- Do same "read header length" trick in cdrom_get_disc_info() as
196 we do in cdrom_get_track_info() -- some drive don't obey specs and
197 fail if they can't supply the full Mt Fuji size table.
198 -- Deleted stuff related to setting up write modes. It has a different
200 -- Clear header length in mode_select unconditionally.
201 -- Removed the register_disk() that was added, not needed here.
203 3.08 May 1, 2000 - Jens Axboe <axboe@suse.de>
204 -- Fix direction flag in setup_send_key and setup_report_key. This
205 gave some SCSI adapters problems.
206 -- Always return -EROFS for write opens
207 -- Convert to module_init/module_exit style init and remove some
208 of the #ifdef MODULE stuff
209 -- Fix several dvd errors - DVD_LU_SEND_ASF should pass agid,
210 DVD_HOST_SEND_RPC_STATE did not set buffer size in cdb, and
211 dvd_do_auth passed uninitialized data to drive because init_cdrom_command
212 did not clear a 0 sized buffer.
214 3.09 May 12, 2000 - Jens Axboe <axboe@suse.de>
215 -- Fix Video-CD on SCSI drives that don't support READ_CD command. In
216 that case switch block size and issue plain READ_10 again, then switch
219 3.10 Jun 10, 2000 - Jens Axboe <axboe@suse.de>
220 -- Fix volume control on CD's - old SCSI-II drives now use their own
221 code, as doing MODE6 stuff in here is really not my intention.
222 -- Use READ_DISC_INFO for more reliable end-of-disc.
224 3.11 Jun 12, 2000 - Jens Axboe <axboe@suse.de>
225 -- Fix bug in getting rpc phase 2 region info.
226 -- Reinstate "correct" CDROMPLAYTRKIND
228 3.12 Oct 18, 2000 - Jens Axboe <axboe@suse.de>
229 -- Use quiet bit on packet commands not known to work
231 3.20 Dec 17, 2003 - Jens Axboe <axboe@suse.de>
232 -- Various fixes and lots of cleanups not listed :-)
234 -- Mt Rainier support
235 -- DVD-RAM write open fixes
237 Nov 5 2001, Aug 8 2002. Modified by Andy Polyakov
238 <appro@fy.chalmers.se> to support MMC-3 compliant DVD+RW units.
240 Modified by Nigel Kukard <nkukard@lbsd.net> - support DVD+RW
241 2.4.x patch by Andy Polyakov <appro@fy.chalmers.se>
243 -------------------------------------------------------------------------*/
245 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
247 #define REVISION "Revision: 3.20"
248 #define VERSION "Id: cdrom.c 3.20 2003/12/17"
250 /* I use an error-log mask to give fine grain control over the type of
251 messages dumped to the system logs. The available masks include: */
252 #define CD_NOTHING 0x0
253 #define CD_WARNING 0x1
254 #define CD_REG_UNREG 0x2
255 #define CD_DO_IOCTL 0x4
257 #define CD_CLOSE 0x10
258 #define CD_COUNT_TRACKS 0x20
259 #define CD_CHANGER 0x40
262 /* Define this to remove _all_ the debugging messages */
263 /* #define ERRLOGMASK CD_NOTHING */
264 #define ERRLOGMASK CD_WARNING
265 /* #define ERRLOGMASK (CD_WARNING|CD_OPEN|CD_COUNT_TRACKS|CD_CLOSE) */
266 /* #define ERRLOGMASK (CD_WARNING|CD_REG_UNREG|CD_DO_IOCTL|CD_OPEN|CD_CLOSE|CD_COUNT_TRACKS) */
268 #include <linux/module.h>
269 #include <linux/fs.h>
270 #include <linux/major.h>
271 #include <linux/types.h>
272 #include <linux/errno.h>
273 #include <linux/kernel.h>
274 #include <linux/mm.h>
275 #include <linux/slab.h>
276 #include <linux/cdrom.h>
277 #include <linux/sysctl.h>
278 #include <linux/proc_fs.h>
279 #include <linux/blkpg.h>
280 #include <linux/init.h>
281 #include <linux/fcntl.h>
282 #include <linux/blkdev.h>
283 #include <linux/times.h>
285 #include <asm/uaccess.h>
287 /* used to tell the module to turn on full debugging messages */
289 /* used to keep tray locked at all times */
290 static int keeplocked
;
291 /* default compatibility mode */
292 static bool autoclose
=1;
293 static bool autoeject
;
294 static bool lockdoor
= 1;
295 /* will we ever get to use this... sigh. */
296 static bool check_media_type
;
297 /* automatically restart mrw format */
298 static bool mrw_format_restart
= 1;
299 module_param(debug
, bool, 0);
300 module_param(autoclose
, bool, 0);
301 module_param(autoeject
, bool, 0);
302 module_param(lockdoor
, bool, 0);
303 module_param(check_media_type
, bool, 0);
304 module_param(mrw_format_restart
, bool, 0);
306 static DEFINE_MUTEX(cdrom_mutex
);
308 static const char *mrw_format_status
[] = {
315 static const char *mrw_address_space
[] = { "DMA", "GAA" };
317 #if (ERRLOGMASK!=CD_NOTHING)
318 #define cdinfo(type, fmt, args...) \
320 if ((ERRLOGMASK & type) || debug == 1) \
321 pr_info(fmt, ##args); \
324 #define cdinfo(type, fmt, args...) \
326 if (0 && (ERRLOGMASK & type) || debug == 1) \
327 pr_info(fmt, ##args); \
331 /* These are used to simplify getting data in from and back to user land */
332 #define IOCTL_IN(arg, type, in) \
333 if (copy_from_user(&(in), (type __user *) (arg), sizeof (in))) \
336 #define IOCTL_OUT(arg, type, out) \
337 if (copy_to_user((type __user *) (arg), &(out), sizeof (out))) \
340 /* The (cdo->capability & ~cdi->mask & CDC_XXX) construct was used in
341 a lot of places. This macro makes the code more clear. */
342 #define CDROM_CAN(type) (cdi->ops->capability & ~cdi->mask & (type))
344 /* used in the audio ioctls */
345 #define CHECKAUDIO if ((ret=check_for_audio_disc(cdi, cdo))) return ret
348 * Another popular OS uses 7 seconds as the hard timeout for default
349 * commands, so it is a good choice for us as well.
351 #define CDROM_DEF_TIMEOUT (7 * HZ)
353 /* Not-exported routines. */
354 static int open_for_data(struct cdrom_device_info
* cdi
);
355 static int check_for_audio_disc(struct cdrom_device_info
* cdi
,
356 struct cdrom_device_ops
* cdo
);
357 static void sanitize_format(union cdrom_addr
*addr
,
358 u_char
* curr
, u_char requested
);
359 static int mmc_ioctl(struct cdrom_device_info
*cdi
, unsigned int cmd
,
362 int cdrom_get_last_written(struct cdrom_device_info
*, long *);
363 static int cdrom_get_next_writable(struct cdrom_device_info
*, long *);
364 static void cdrom_count_tracks(struct cdrom_device_info
*, tracktype
*);
366 static int cdrom_mrw_exit(struct cdrom_device_info
*cdi
);
368 static int cdrom_get_disc_info(struct cdrom_device_info
*cdi
, disc_information
*di
);
370 static void cdrom_sysctl_register(void);
372 static LIST_HEAD(cdrom_list
);
374 static int cdrom_dummy_generic_packet(struct cdrom_device_info
*cdi
,
375 struct packet_command
*cgc
)
378 cgc
->sense
->sense_key
= 0x05;
379 cgc
->sense
->asc
= 0x20;
380 cgc
->sense
->ascq
= 0x00;
387 /* This macro makes sure we don't have to check on cdrom_device_ops
388 * existence in the run-time routines below. Change_capability is a
389 * hack to have the capability flags defined const, while we can still
390 * change it here without gcc complaining at every line.
392 #define ENSURE(call, bits) if (cdo->call == NULL) *change_capability &= ~(bits)
394 int register_cdrom(struct cdrom_device_info
*cdi
)
396 static char banner_printed
;
397 struct cdrom_device_ops
*cdo
= cdi
->ops
;
398 int *change_capability
= (int *)&cdo
->capability
; /* hack */
400 cdinfo(CD_OPEN
, "entering register_cdrom\n");
402 if (cdo
->open
== NULL
|| cdo
->release
== NULL
)
404 if (!banner_printed
) {
405 pr_info("Uniform CD-ROM driver " REVISION
"\n");
407 cdrom_sysctl_register();
410 ENSURE(drive_status
, CDC_DRIVE_STATUS
);
411 if (cdo
->check_events
== NULL
&& cdo
->media_changed
== NULL
)
412 *change_capability
= ~(CDC_MEDIA_CHANGED
| CDC_SELECT_DISC
);
413 ENSURE(tray_move
, CDC_CLOSE_TRAY
| CDC_OPEN_TRAY
);
414 ENSURE(lock_door
, CDC_LOCK
);
415 ENSURE(select_speed
, CDC_SELECT_SPEED
);
416 ENSURE(get_last_session
, CDC_MULTI_SESSION
);
417 ENSURE(get_mcn
, CDC_MCN
);
418 ENSURE(reset
, CDC_RESET
);
419 ENSURE(generic_packet
, CDC_GENERIC_PACKET
);
422 cdi
->options
= CDO_USE_FFLAGS
;
424 if (autoclose
==1 && CDROM_CAN(CDC_CLOSE_TRAY
))
425 cdi
->options
|= (int) CDO_AUTO_CLOSE
;
426 if (autoeject
==1 && CDROM_CAN(CDC_OPEN_TRAY
))
427 cdi
->options
|= (int) CDO_AUTO_EJECT
;
429 cdi
->options
|= (int) CDO_LOCK
;
430 if (check_media_type
==1)
431 cdi
->options
|= (int) CDO_CHECK_TYPE
;
433 if (CDROM_CAN(CDC_MRW_W
))
434 cdi
->exit
= cdrom_mrw_exit
;
437 cdi
->cdda_method
= CDDA_BPC_FULL
;
439 cdi
->cdda_method
= CDDA_OLD
;
441 if (!cdo
->generic_packet
)
442 cdo
->generic_packet
= cdrom_dummy_generic_packet
;
444 cdinfo(CD_REG_UNREG
, "drive \"/dev/%s\" registered\n", cdi
->name
);
445 mutex_lock(&cdrom_mutex
);
446 list_add(&cdi
->list
, &cdrom_list
);
447 mutex_unlock(&cdrom_mutex
);
452 void unregister_cdrom(struct cdrom_device_info
*cdi
)
454 cdinfo(CD_OPEN
, "entering unregister_cdrom\n");
456 mutex_lock(&cdrom_mutex
);
457 list_del(&cdi
->list
);
458 mutex_unlock(&cdrom_mutex
);
463 cdi
->ops
->n_minors
--;
464 cdinfo(CD_REG_UNREG
, "drive \"/dev/%s\" unregistered\n", cdi
->name
);
467 int cdrom_get_media_event(struct cdrom_device_info
*cdi
,
468 struct media_event_desc
*med
)
470 struct packet_command cgc
;
471 unsigned char buffer
[8];
472 struct event_header
*eh
= (struct event_header
*) buffer
;
474 init_cdrom_command(&cgc
, buffer
, sizeof(buffer
), CGC_DATA_READ
);
475 cgc
.cmd
[0] = GPCMD_GET_EVENT_STATUS_NOTIFICATION
;
476 cgc
.cmd
[1] = 1; /* IMMED */
477 cgc
.cmd
[4] = 1 << 4; /* media event */
478 cgc
.cmd
[8] = sizeof(buffer
);
481 if (cdi
->ops
->generic_packet(cdi
, &cgc
))
484 if (be16_to_cpu(eh
->data_len
) < sizeof(*med
))
487 if (eh
->nea
|| eh
->notification_class
!= 0x4)
490 memcpy(med
, &buffer
[sizeof(*eh
)], sizeof(*med
));
495 * the first prototypes used 0x2c as the page code for the mrw mode page,
496 * subsequently this was changed to 0x03. probe the one used by this drive
498 static int cdrom_mrw_probe_pc(struct cdrom_device_info
*cdi
)
500 struct packet_command cgc
;
503 init_cdrom_command(&cgc
, buffer
, sizeof(buffer
), CGC_DATA_READ
);
508 if (!cdrom_mode_sense(cdi
, &cgc
, MRW_MODE_PC
, 0)) {
509 cdi
->mrw_mode_page
= MRW_MODE_PC
;
511 } else if (!cdrom_mode_sense(cdi
, &cgc
, MRW_MODE_PC_PRE1
, 0)) {
512 cdi
->mrw_mode_page
= MRW_MODE_PC_PRE1
;
519 static int cdrom_is_mrw(struct cdrom_device_info
*cdi
, int *write
)
521 struct packet_command cgc
;
522 struct mrw_feature_desc
*mfd
;
523 unsigned char buffer
[16];
528 init_cdrom_command(&cgc
, buffer
, sizeof(buffer
), CGC_DATA_READ
);
530 cgc
.cmd
[0] = GPCMD_GET_CONFIGURATION
;
531 cgc
.cmd
[3] = CDF_MRW
;
532 cgc
.cmd
[8] = sizeof(buffer
);
535 if ((ret
= cdi
->ops
->generic_packet(cdi
, &cgc
)))
538 mfd
= (struct mrw_feature_desc
*)&buffer
[sizeof(struct feature_header
)];
539 if (be16_to_cpu(mfd
->feature_code
) != CDF_MRW
)
543 if ((ret
= cdrom_mrw_probe_pc(cdi
))) {
551 static int cdrom_mrw_bgformat(struct cdrom_device_info
*cdi
, int cont
)
553 struct packet_command cgc
;
554 unsigned char buffer
[12];
557 pr_info("%sstarting format\n", cont
? "Re" : "");
560 * FmtData bit set (bit 4), format type is 1
562 init_cdrom_command(&cgc
, buffer
, sizeof(buffer
), CGC_DATA_WRITE
);
563 cgc
.cmd
[0] = GPCMD_FORMAT_UNIT
;
564 cgc
.cmd
[1] = (1 << 4) | 1;
566 cgc
.timeout
= 5 * 60 * HZ
;
569 * 4 byte format list header, 8 byte format list descriptor
582 buffer
[8] = 0x24 << 2;
585 ret
= cdi
->ops
->generic_packet(cdi
, &cgc
);
587 pr_info("bgformat failed\n");
592 static int cdrom_mrw_bgformat_susp(struct cdrom_device_info
*cdi
, int immed
)
594 struct packet_command cgc
;
596 init_cdrom_command(&cgc
, NULL
, 0, CGC_DATA_NONE
);
597 cgc
.cmd
[0] = GPCMD_CLOSE_TRACK
;
600 * Session = 1, Track = 0
602 cgc
.cmd
[1] = !!immed
;
605 cgc
.timeout
= 5 * 60 * HZ
;
607 return cdi
->ops
->generic_packet(cdi
, &cgc
);
610 static int cdrom_flush_cache(struct cdrom_device_info
*cdi
)
612 struct packet_command cgc
;
614 init_cdrom_command(&cgc
, NULL
, 0, CGC_DATA_NONE
);
615 cgc
.cmd
[0] = GPCMD_FLUSH_CACHE
;
617 cgc
.timeout
= 5 * 60 * HZ
;
619 return cdi
->ops
->generic_packet(cdi
, &cgc
);
622 static int cdrom_mrw_exit(struct cdrom_device_info
*cdi
)
627 ret
= cdrom_get_disc_info(cdi
, &di
);
628 if (ret
< 0 || ret
< (int)offsetof(typeof(di
),disc_type
))
632 if (di
.mrw_status
== CDM_MRW_BGFORMAT_ACTIVE
) {
633 pr_info("issuing MRW background format suspend\n");
634 ret
= cdrom_mrw_bgformat_susp(cdi
, 0);
637 if (!ret
&& cdi
->media_written
)
638 ret
= cdrom_flush_cache(cdi
);
643 static int cdrom_mrw_set_lba_space(struct cdrom_device_info
*cdi
, int space
)
645 struct packet_command cgc
;
646 struct mode_page_header
*mph
;
648 int ret
, offset
, size
;
650 init_cdrom_command(&cgc
, buffer
, sizeof(buffer
), CGC_DATA_READ
);
653 cgc
.buflen
= sizeof(buffer
);
655 if ((ret
= cdrom_mode_sense(cdi
, &cgc
, cdi
->mrw_mode_page
, 0)))
658 mph
= (struct mode_page_header
*) buffer
;
659 offset
= be16_to_cpu(mph
->desc_length
);
660 size
= be16_to_cpu(mph
->mode_data_length
) + 2;
662 buffer
[offset
+ 3] = space
;
665 if ((ret
= cdrom_mode_select(cdi
, &cgc
)))
668 pr_info("%s: mrw address space %s selected\n",
669 cdi
->name
, mrw_address_space
[space
]);
673 static int cdrom_get_random_writable(struct cdrom_device_info
*cdi
,
674 struct rwrt_feature_desc
*rfd
)
676 struct packet_command cgc
;
680 init_cdrom_command(&cgc
, buffer
, sizeof(buffer
), CGC_DATA_READ
);
682 cgc
.cmd
[0] = GPCMD_GET_CONFIGURATION
; /* often 0x46 */
683 cgc
.cmd
[3] = CDF_RWRT
; /* often 0x0020 */
684 cgc
.cmd
[8] = sizeof(buffer
); /* often 0x18 */
687 if ((ret
= cdi
->ops
->generic_packet(cdi
, &cgc
)))
690 memcpy(rfd
, &buffer
[sizeof(struct feature_header
)], sizeof (*rfd
));
694 static int cdrom_has_defect_mgt(struct cdrom_device_info
*cdi
)
696 struct packet_command cgc
;
698 __be16
*feature_code
;
701 init_cdrom_command(&cgc
, buffer
, sizeof(buffer
), CGC_DATA_READ
);
703 cgc
.cmd
[0] = GPCMD_GET_CONFIGURATION
;
704 cgc
.cmd
[3] = CDF_HWDM
;
705 cgc
.cmd
[8] = sizeof(buffer
);
708 if ((ret
= cdi
->ops
->generic_packet(cdi
, &cgc
)))
711 feature_code
= (__be16
*) &buffer
[sizeof(struct feature_header
)];
712 if (be16_to_cpu(*feature_code
) == CDF_HWDM
)
719 static int cdrom_is_random_writable(struct cdrom_device_info
*cdi
, int *write
)
721 struct rwrt_feature_desc rfd
;
726 if ((ret
= cdrom_get_random_writable(cdi
, &rfd
)))
729 if (CDF_RWRT
== be16_to_cpu(rfd
.feature_code
))
735 static int cdrom_media_erasable(struct cdrom_device_info
*cdi
)
740 ret
= cdrom_get_disc_info(cdi
, &di
);
741 if (ret
< 0 || ret
< offsetof(typeof(di
), n_first_track
))
748 * FIXME: check RO bit
750 static int cdrom_dvdram_open_write(struct cdrom_device_info
*cdi
)
752 int ret
= cdrom_media_erasable(cdi
);
755 * allow writable open if media info read worked and media is
756 * erasable, _or_ if it fails since not all drives support it
764 static int cdrom_mrw_open_write(struct cdrom_device_info
*cdi
)
770 * always reset to DMA lba space on open
772 if (cdrom_mrw_set_lba_space(cdi
, MRW_LBA_DMA
)) {
773 pr_err("failed setting lba address space\n");
777 ret
= cdrom_get_disc_info(cdi
, &di
);
778 if (ret
< 0 || ret
< offsetof(typeof(di
),disc_type
))
786 * 0 - not MRW formatted
787 * 1 - MRW bgformat started, but not running or complete
788 * 2 - MRW bgformat in progress
789 * 3 - MRW formatting complete
792 pr_info("open: mrw_status '%s'\n", mrw_format_status
[di
.mrw_status
]);
795 else if (di
.mrw_status
== CDM_MRW_BGFORMAT_INACTIVE
&&
797 ret
= cdrom_mrw_bgformat(cdi
, 1);
802 static int mo_open_write(struct cdrom_device_info
*cdi
)
804 struct packet_command cgc
;
808 init_cdrom_command(&cgc
, &buffer
, 4, CGC_DATA_READ
);
812 * obtain write protect information as per
813 * drivers/scsi/sd.c:sd_read_write_protect_flag
816 ret
= cdrom_mode_sense(cdi
, &cgc
, GPMODE_ALL_PAGES
, 0);
818 ret
= cdrom_mode_sense(cdi
, &cgc
, GPMODE_VENDOR_PAGE
, 0);
821 ret
= cdrom_mode_sense(cdi
, &cgc
, GPMODE_ALL_PAGES
, 0);
824 /* drive gave us no info, let the user go ahead */
828 return buffer
[3] & 0x80;
831 static int cdrom_ram_open_write(struct cdrom_device_info
*cdi
)
833 struct rwrt_feature_desc rfd
;
836 if ((ret
= cdrom_has_defect_mgt(cdi
)))
839 if ((ret
= cdrom_get_random_writable(cdi
, &rfd
)))
841 else if (CDF_RWRT
== be16_to_cpu(rfd
.feature_code
))
844 cdinfo(CD_OPEN
, "can open for random write\n");
848 static void cdrom_mmc3_profile(struct cdrom_device_info
*cdi
)
850 struct packet_command cgc
;
852 int ret
, mmc3_profile
;
854 init_cdrom_command(&cgc
, buffer
, sizeof(buffer
), CGC_DATA_READ
);
856 cgc
.cmd
[0] = GPCMD_GET_CONFIGURATION
;
858 cgc
.cmd
[2] = cgc
.cmd
[3] = 0; /* Starting Feature Number */
859 cgc
.cmd
[8] = sizeof(buffer
); /* Allocation Length */
862 if ((ret
= cdi
->ops
->generic_packet(cdi
, &cgc
)))
863 mmc3_profile
= 0xffff;
865 mmc3_profile
= (buffer
[6] << 8) | buffer
[7];
867 cdi
->mmc3_profile
= mmc3_profile
;
870 static int cdrom_is_dvd_rw(struct cdrom_device_info
*cdi
)
872 switch (cdi
->mmc3_profile
) {
873 case 0x12: /* DVD-RAM */
874 case 0x1A: /* DVD+RW */
882 * returns 0 for ok to open write, non-0 to disallow
884 static int cdrom_open_write(struct cdrom_device_info
*cdi
)
886 int mrw
, mrw_write
, ram_write
;
890 if (!cdrom_is_mrw(cdi
, &mrw_write
))
893 if (CDROM_CAN(CDC_MO_DRIVE
))
896 (void) cdrom_is_random_writable(cdi
, &ram_write
);
899 cdi
->mask
&= ~CDC_MRW
;
901 cdi
->mask
|= CDC_MRW
;
904 cdi
->mask
&= ~CDC_MRW_W
;
906 cdi
->mask
|= CDC_MRW_W
;
909 cdi
->mask
&= ~CDC_RAM
;
911 cdi
->mask
|= CDC_RAM
;
913 if (CDROM_CAN(CDC_MRW_W
))
914 ret
= cdrom_mrw_open_write(cdi
);
915 else if (CDROM_CAN(CDC_DVD_RAM
))
916 ret
= cdrom_dvdram_open_write(cdi
);
917 else if (CDROM_CAN(CDC_RAM
) &&
918 !CDROM_CAN(CDC_CD_R
|CDC_CD_RW
|CDC_DVD
|CDC_DVD_R
|CDC_MRW
|CDC_MO_DRIVE
))
919 ret
= cdrom_ram_open_write(cdi
);
920 else if (CDROM_CAN(CDC_MO_DRIVE
))
921 ret
= mo_open_write(cdi
);
922 else if (!cdrom_is_dvd_rw(cdi
))
928 static void cdrom_dvd_rw_close_write(struct cdrom_device_info
*cdi
)
930 struct packet_command cgc
;
932 if (cdi
->mmc3_profile
!= 0x1a) {
933 cdinfo(CD_CLOSE
, "%s: No DVD+RW\n", cdi
->name
);
937 if (!cdi
->media_written
) {
938 cdinfo(CD_CLOSE
, "%s: DVD+RW media clean\n", cdi
->name
);
942 pr_info("%s: dirty DVD+RW media, \"finalizing\"\n", cdi
->name
);
944 init_cdrom_command(&cgc
, NULL
, 0, CGC_DATA_NONE
);
945 cgc
.cmd
[0] = GPCMD_FLUSH_CACHE
;
947 cdi
->ops
->generic_packet(cdi
, &cgc
);
949 init_cdrom_command(&cgc
, NULL
, 0, CGC_DATA_NONE
);
950 cgc
.cmd
[0] = GPCMD_CLOSE_TRACK
;
951 cgc
.timeout
= 3000*HZ
;
953 cdi
->ops
->generic_packet(cdi
, &cgc
);
955 init_cdrom_command(&cgc
, NULL
, 0, CGC_DATA_NONE
);
956 cgc
.cmd
[0] = GPCMD_CLOSE_TRACK
;
957 cgc
.cmd
[2] = 2; /* Close session */
959 cgc
.timeout
= 3000*HZ
;
960 cdi
->ops
->generic_packet(cdi
, &cgc
);
962 cdi
->media_written
= 0;
965 static int cdrom_close_write(struct cdrom_device_info
*cdi
)
968 return cdrom_flush_cache(cdi
);
974 /* We use the open-option O_NONBLOCK to indicate that the
975 * purpose of opening is only for subsequent ioctl() calls; no device
976 * integrity checks are performed.
978 * We hope that all cd-player programs will adopt this convention. It
979 * is in their own interest: device control becomes a lot easier
982 int cdrom_open(struct cdrom_device_info
*cdi
, struct block_device
*bdev
, fmode_t mode
)
986 cdinfo(CD_OPEN
, "entering cdrom_open\n");
988 /* open is event synchronization point, check events first */
989 check_disk_change(bdev
);
991 /* if this was a O_NONBLOCK open and we should honor the flags,
992 * do a quick open without drive/disc integrity checks. */
994 if ((mode
& FMODE_NDELAY
) && (cdi
->options
& CDO_USE_FFLAGS
)) {
995 ret
= cdi
->ops
->open(cdi
, 1);
997 ret
= open_for_data(cdi
);
1000 cdrom_mmc3_profile(cdi
);
1001 if (mode
& FMODE_WRITE
) {
1003 if (cdrom_open_write(cdi
))
1005 if (!CDROM_CAN(CDC_RAM
))
1008 cdi
->media_written
= 0;
1015 cdinfo(CD_OPEN
, "Use count for \"/dev/%s\" now %d\n",
1016 cdi
->name
, cdi
->use_count
);
1019 if (CDROM_CAN(CDC_LOCK
) && cdi
->options
& CDO_LOCK
) {
1020 cdi
->ops
->lock_door(cdi
, 0);
1021 cdinfo(CD_OPEN
, "door unlocked.\n");
1023 cdi
->ops
->release(cdi
);
1030 int open_for_data(struct cdrom_device_info
* cdi
)
1033 struct cdrom_device_ops
*cdo
= cdi
->ops
;
1035 cdinfo(CD_OPEN
, "entering open_for_data\n");
1036 /* Check if the driver can report drive status. If it can, we
1037 can do clever things. If it can't, well, we at least tried! */
1038 if (cdo
->drive_status
!= NULL
) {
1039 ret
= cdo
->drive_status(cdi
, CDSL_CURRENT
);
1040 cdinfo(CD_OPEN
, "drive_status=%d\n", ret
);
1041 if (ret
== CDS_TRAY_OPEN
) {
1042 cdinfo(CD_OPEN
, "the tray is open...\n");
1043 /* can/may i close it? */
1044 if (CDROM_CAN(CDC_CLOSE_TRAY
) &&
1045 cdi
->options
& CDO_AUTO_CLOSE
) {
1046 cdinfo(CD_OPEN
, "trying to close the tray.\n");
1047 ret
=cdo
->tray_move(cdi
,0);
1049 cdinfo(CD_OPEN
, "bummer. tried to close the tray but failed.\n");
1050 /* Ignore the error from the low
1051 level driver. We don't care why it
1052 couldn't close the tray. We only care
1053 that there is no disc in the drive,
1054 since that is the _REAL_ problem here.*/
1056 goto clean_up_and_return
;
1059 cdinfo(CD_OPEN
, "bummer. this drive can't close the tray.\n");
1061 goto clean_up_and_return
;
1063 /* Ok, the door should be closed now.. Check again */
1064 ret
= cdo
->drive_status(cdi
, CDSL_CURRENT
);
1065 if ((ret
== CDS_NO_DISC
) || (ret
==CDS_TRAY_OPEN
)) {
1066 cdinfo(CD_OPEN
, "bummer. the tray is still not closed.\n");
1067 cdinfo(CD_OPEN
, "tray might not contain a medium.\n");
1069 goto clean_up_and_return
;
1071 cdinfo(CD_OPEN
, "the tray is now closed.\n");
1073 /* the door should be closed now, check for the disc */
1074 ret
= cdo
->drive_status(cdi
, CDSL_CURRENT
);
1075 if (ret
!=CDS_DISC_OK
) {
1077 goto clean_up_and_return
;
1080 cdrom_count_tracks(cdi
, &tracks
);
1081 if (tracks
.error
== CDS_NO_DISC
) {
1082 cdinfo(CD_OPEN
, "bummer. no disc.\n");
1084 goto clean_up_and_return
;
1086 /* CD-Players which don't use O_NONBLOCK, workman
1087 * for example, need bit CDO_CHECK_TYPE cleared! */
1088 if (tracks
.data
==0) {
1089 if (cdi
->options
& CDO_CHECK_TYPE
) {
1090 /* give people a warning shot, now that CDO_CHECK_TYPE
1091 is the default case! */
1092 cdinfo(CD_OPEN
, "bummer. wrong media type.\n");
1093 cdinfo(CD_WARNING
, "pid %d must open device O_NONBLOCK!\n",
1094 (unsigned int)task_pid_nr(current
));
1096 goto clean_up_and_return
;
1099 cdinfo(CD_OPEN
, "wrong media type, but CDO_CHECK_TYPE not set.\n");
1103 cdinfo(CD_OPEN
, "all seems well, opening the device.\n");
1105 /* all seems well, we can open the device */
1106 ret
= cdo
->open(cdi
, 0); /* open for data */
1107 cdinfo(CD_OPEN
, "opening the device gave me %d.\n", ret
);
1108 /* After all this careful checking, we shouldn't have problems
1109 opening the device, but we don't want the device locked if
1110 this somehow fails... */
1112 cdinfo(CD_OPEN
, "open device failed.\n");
1113 goto clean_up_and_return
;
1115 if (CDROM_CAN(CDC_LOCK
) && (cdi
->options
& CDO_LOCK
)) {
1116 cdo
->lock_door(cdi
, 1);
1117 cdinfo(CD_OPEN
, "door locked.\n");
1119 cdinfo(CD_OPEN
, "device opened successfully.\n");
1122 /* Something failed. Try to unlock the drive, because some drivers
1123 (notably ide-cd) lock the drive after every command. This produced
1124 a nasty bug where after mount failed, the drive would remain locked!
1125 This ensures that the drive gets unlocked after a mount fails. This
1126 is a goto to avoid bloating the driver with redundant code. */
1127 clean_up_and_return
:
1128 cdinfo(CD_OPEN
, "open failed.\n");
1129 if (CDROM_CAN(CDC_LOCK
) && cdi
->options
& CDO_LOCK
) {
1130 cdo
->lock_door(cdi
, 0);
1131 cdinfo(CD_OPEN
, "door unlocked.\n");
1136 /* This code is similar to that in open_for_data. The routine is called
1137 whenever an audio play operation is requested.
1139 static int check_for_audio_disc(struct cdrom_device_info
* cdi
,
1140 struct cdrom_device_ops
* cdo
)
1144 cdinfo(CD_OPEN
, "entering check_for_audio_disc\n");
1145 if (!(cdi
->options
& CDO_CHECK_TYPE
))
1147 if (cdo
->drive_status
!= NULL
) {
1148 ret
= cdo
->drive_status(cdi
, CDSL_CURRENT
);
1149 cdinfo(CD_OPEN
, "drive_status=%d\n", ret
);
1150 if (ret
== CDS_TRAY_OPEN
) {
1151 cdinfo(CD_OPEN
, "the tray is open...\n");
1152 /* can/may i close it? */
1153 if (CDROM_CAN(CDC_CLOSE_TRAY
) &&
1154 cdi
->options
& CDO_AUTO_CLOSE
) {
1155 cdinfo(CD_OPEN
, "trying to close the tray.\n");
1156 ret
=cdo
->tray_move(cdi
,0);
1158 cdinfo(CD_OPEN
, "bummer. tried to close tray but failed.\n");
1159 /* Ignore the error from the low
1160 level driver. We don't care why it
1161 couldn't close the tray. We only care
1162 that there is no disc in the drive,
1163 since that is the _REAL_ problem here.*/
1167 cdinfo(CD_OPEN
, "bummer. this driver can't close the tray.\n");
1170 /* Ok, the door should be closed now.. Check again */
1171 ret
= cdo
->drive_status(cdi
, CDSL_CURRENT
);
1172 if ((ret
== CDS_NO_DISC
) || (ret
==CDS_TRAY_OPEN
)) {
1173 cdinfo(CD_OPEN
, "bummer. the tray is still not closed.\n");
1176 if (ret
!=CDS_DISC_OK
) {
1177 cdinfo(CD_OPEN
, "bummer. disc isn't ready.\n");
1180 cdinfo(CD_OPEN
, "the tray is now closed.\n");
1183 cdrom_count_tracks(cdi
, &tracks
);
1185 return(tracks
.error
);
1187 if (tracks
.audio
==0)
1188 return -EMEDIUMTYPE
;
1193 void cdrom_release(struct cdrom_device_info
*cdi
, fmode_t mode
)
1195 struct cdrom_device_ops
*cdo
= cdi
->ops
;
1196 int opened_for_data
;
1198 cdinfo(CD_CLOSE
, "entering cdrom_release\n");
1200 if (cdi
->use_count
> 0)
1203 if (cdi
->use_count
== 0) {
1204 cdinfo(CD_CLOSE
, "Use count for \"/dev/%s\" now zero\n", cdi
->name
);
1205 cdrom_dvd_rw_close_write(cdi
);
1207 if ((cdo
->capability
& CDC_LOCK
) && !keeplocked
) {
1208 cdinfo(CD_CLOSE
, "Unlocking door!\n");
1209 cdo
->lock_door(cdi
, 0);
1213 opened_for_data
= !(cdi
->options
& CDO_USE_FFLAGS
) ||
1214 !(mode
& FMODE_NDELAY
);
1217 * flush cache on last write release
1219 if (CDROM_CAN(CDC_RAM
) && !cdi
->use_count
&& cdi
->for_data
)
1220 cdrom_close_write(cdi
);
1223 if (cdi
->use_count
== 0) { /* last process that closes dev*/
1224 if (opened_for_data
&&
1225 cdi
->options
& CDO_AUTO_EJECT
&& CDROM_CAN(CDC_OPEN_TRAY
))
1226 cdo
->tray_move(cdi
, 1);
1230 static int cdrom_read_mech_status(struct cdrom_device_info
*cdi
,
1231 struct cdrom_changer_info
*buf
)
1233 struct packet_command cgc
;
1234 struct cdrom_device_ops
*cdo
= cdi
->ops
;
1238 * Sanyo changer isn't spec compliant (doesn't use regular change
1239 * LOAD_UNLOAD command, and it doesn't implement the mech status
1242 if (cdi
->sanyo_slot
) {
1243 buf
->hdr
.nslots
= 3;
1244 buf
->hdr
.curslot
= cdi
->sanyo_slot
== 3 ? 0 : cdi
->sanyo_slot
;
1245 for (length
= 0; length
< 3; length
++) {
1246 buf
->slots
[length
].disc_present
= 1;
1247 buf
->slots
[length
].change
= 0;
1252 length
= sizeof(struct cdrom_mechstat_header
) +
1253 cdi
->capacity
* sizeof(struct cdrom_slot
);
1255 init_cdrom_command(&cgc
, buf
, length
, CGC_DATA_READ
);
1256 cgc
.cmd
[0] = GPCMD_MECHANISM_STATUS
;
1257 cgc
.cmd
[8] = (length
>> 8) & 0xff;
1258 cgc
.cmd
[9] = length
& 0xff;
1259 return cdo
->generic_packet(cdi
, &cgc
);
1262 static int cdrom_slot_status(struct cdrom_device_info
*cdi
, int slot
)
1264 struct cdrom_changer_info
*info
;
1267 cdinfo(CD_CHANGER
, "entering cdrom_slot_status()\n");
1268 if (cdi
->sanyo_slot
)
1271 info
= kmalloc(sizeof(*info
), GFP_KERNEL
);
1275 if ((ret
= cdrom_read_mech_status(cdi
, info
)))
1278 if (info
->slots
[slot
].disc_present
)
1288 /* Return the number of slots for an ATAPI/SCSI cdrom,
1289 * return 1 if not a changer.
1291 int cdrom_number_of_slots(struct cdrom_device_info
*cdi
)
1295 struct cdrom_changer_info
*info
;
1297 cdinfo(CD_CHANGER
, "entering cdrom_number_of_slots()\n");
1298 /* cdrom_read_mech_status requires a valid value for capacity: */
1301 info
= kmalloc(sizeof(*info
), GFP_KERNEL
);
1305 if ((status
= cdrom_read_mech_status(cdi
, info
)) == 0)
1306 nslots
= info
->hdr
.nslots
;
1313 /* If SLOT < 0, unload the current slot. Otherwise, try to load SLOT. */
1314 static int cdrom_load_unload(struct cdrom_device_info
*cdi
, int slot
)
1316 struct packet_command cgc
;
1318 cdinfo(CD_CHANGER
, "entering cdrom_load_unload()\n");
1319 if (cdi
->sanyo_slot
&& slot
< 0)
1322 init_cdrom_command(&cgc
, NULL
, 0, CGC_DATA_NONE
);
1323 cgc
.cmd
[0] = GPCMD_LOAD_UNLOAD
;
1324 cgc
.cmd
[4] = 2 + (slot
>= 0);
1326 cgc
.timeout
= 60 * HZ
;
1328 /* The Sanyo 3 CD changer uses byte 7 of the
1329 GPCMD_TEST_UNIT_READY to command to switch CDs instead of
1330 using the GPCMD_LOAD_UNLOAD opcode. */
1331 if (cdi
->sanyo_slot
&& -1 < slot
) {
1332 cgc
.cmd
[0] = GPCMD_TEST_UNIT_READY
;
1334 cgc
.cmd
[4] = cgc
.cmd
[8] = 0;
1335 cdi
->sanyo_slot
= slot
? slot
: 3;
1338 return cdi
->ops
->generic_packet(cdi
, &cgc
);
1341 static int cdrom_select_disc(struct cdrom_device_info
*cdi
, int slot
)
1343 struct cdrom_changer_info
*info
;
1347 cdinfo(CD_CHANGER
, "entering cdrom_select_disc()\n");
1348 if (!CDROM_CAN(CDC_SELECT_DISC
))
1349 return -EDRIVE_CANT_DO_THIS
;
1351 if (cdi
->ops
->check_events
)
1352 cdi
->ops
->check_events(cdi
, 0, slot
);
1354 cdi
->ops
->media_changed(cdi
, slot
);
1356 if (slot
== CDSL_NONE
) {
1357 /* set media changed bits, on both queues */
1358 cdi
->mc_flags
= 0x3;
1359 return cdrom_load_unload(cdi
, -1);
1362 info
= kmalloc(sizeof(*info
), GFP_KERNEL
);
1366 if ((ret
= cdrom_read_mech_status(cdi
, info
))) {
1371 curslot
= info
->hdr
.curslot
;
1374 if (cdi
->use_count
> 1 || keeplocked
) {
1375 if (slot
== CDSL_CURRENT
) {
1382 /* Specifying CDSL_CURRENT will attempt to load the currnet slot,
1383 which is useful if it had been previously unloaded.
1384 Whether it can or not, it returns the current slot.
1385 Similarly, if slot happens to be the current one, we still
1387 if (slot
== CDSL_CURRENT
)
1390 /* set media changed bits on both queues */
1391 cdi
->mc_flags
= 0x3;
1392 if ((ret
= cdrom_load_unload(cdi
, slot
)))
1399 * As cdrom implements an extra ioctl consumer for media changed
1400 * event, it needs to buffer ->check_events() output, such that event
1401 * is not lost for both the usual VFS and ioctl paths.
1402 * cdi->{vfs|ioctl}_events are used to buffer pending events for each
1405 * XXX: Locking is non-existent. cdi->ops->check_events() can be
1406 * called in parallel and buffering fields are accessed without any
1407 * exclusion. The original media_changed code had the same problem.
1408 * It might be better to simply deprecate CDROM_MEDIA_CHANGED ioctl
1409 * and remove this cruft altogether. It doesn't have much usefulness
1412 static void cdrom_update_events(struct cdrom_device_info
*cdi
,
1413 unsigned int clearing
)
1415 unsigned int events
;
1417 events
= cdi
->ops
->check_events(cdi
, clearing
, CDSL_CURRENT
);
1418 cdi
->vfs_events
|= events
;
1419 cdi
->ioctl_events
|= events
;
1422 unsigned int cdrom_check_events(struct cdrom_device_info
*cdi
,
1423 unsigned int clearing
)
1425 unsigned int events
;
1427 cdrom_update_events(cdi
, clearing
);
1428 events
= cdi
->vfs_events
;
1429 cdi
->vfs_events
= 0;
1432 EXPORT_SYMBOL(cdrom_check_events
);
1434 /* We want to make media_changed accessible to the user through an
1435 * ioctl. The main problem now is that we must double-buffer the
1436 * low-level implementation, to assure that the VFS and the user both
1437 * see a medium change once.
1441 int media_changed(struct cdrom_device_info
*cdi
, int queue
)
1443 unsigned int mask
= (1 << (queue
& 1));
1444 int ret
= !!(cdi
->mc_flags
& mask
);
1447 if (!CDROM_CAN(CDC_MEDIA_CHANGED
))
1450 /* changed since last call? */
1451 if (cdi
->ops
->check_events
) {
1452 BUG_ON(!queue
); /* shouldn't be called from VFS path */
1453 cdrom_update_events(cdi
, DISK_EVENT_MEDIA_CHANGE
);
1454 changed
= cdi
->ioctl_events
& DISK_EVENT_MEDIA_CHANGE
;
1455 cdi
->ioctl_events
= 0;
1457 changed
= cdi
->ops
->media_changed(cdi
, CDSL_CURRENT
);
1460 cdi
->mc_flags
= 0x3; /* set bit on both queues */
1462 cdi
->media_written
= 0;
1465 cdi
->mc_flags
&= ~mask
; /* clear bit */
1469 int cdrom_media_changed(struct cdrom_device_info
*cdi
)
1471 /* This talks to the VFS, which doesn't like errors - just 1 or 0.
1472 * Returning "0" is always safe (media hasn't been changed). Do that
1473 * if the low-level cdrom driver dosn't support media changed. */
1474 if (cdi
== NULL
|| cdi
->ops
->media_changed
== NULL
)
1476 if (!CDROM_CAN(CDC_MEDIA_CHANGED
))
1478 return media_changed(cdi
, 0);
1481 /* badly broken, I know. Is due for a fixup anytime. */
1482 static void cdrom_count_tracks(struct cdrom_device_info
*cdi
, tracktype
* tracks
)
1484 struct cdrom_tochdr header
;
1485 struct cdrom_tocentry entry
;
1492 cdinfo(CD_COUNT_TRACKS
, "entering cdrom_count_tracks\n");
1493 /* Grab the TOC header so we can see how many tracks there are */
1494 if ((ret
= cdi
->ops
->audio_ioctl(cdi
, CDROMREADTOCHDR
, &header
))) {
1495 if (ret
== -ENOMEDIUM
)
1496 tracks
->error
= CDS_NO_DISC
;
1498 tracks
->error
= CDS_NO_INFO
;
1501 /* check what type of tracks are on this disc */
1502 entry
.cdte_format
= CDROM_MSF
;
1503 for (i
= header
.cdth_trk0
; i
<= header
.cdth_trk1
; i
++) {
1504 entry
.cdte_track
= i
;
1505 if (cdi
->ops
->audio_ioctl(cdi
, CDROMREADTOCENTRY
, &entry
)) {
1506 tracks
->error
=CDS_NO_INFO
;
1509 if (entry
.cdte_ctrl
& CDROM_DATA_TRACK
) {
1510 if (entry
.cdte_format
== 0x10)
1512 else if (entry
.cdte_format
== 0x20)
1518 cdinfo(CD_COUNT_TRACKS
, "track %d: format=%d, ctrl=%d\n",
1519 i
, entry
.cdte_format
, entry
.cdte_ctrl
);
1521 cdinfo(CD_COUNT_TRACKS
, "disc has %d tracks: %d=audio %d=data %d=Cd-I %d=XA\n",
1522 header
.cdth_trk1
, tracks
->audio
, tracks
->data
,
1523 tracks
->cdi
, tracks
->xa
);
1526 /* Requests to the low-level drivers will /always/ be done in the
1527 following format convention:
1529 CDROM_LBA: all data-related requests.
1530 CDROM_MSF: all audio-related requests.
1532 However, a low-level implementation is allowed to refuse this
1533 request, and return information in its own favorite format.
1535 It doesn't make sense /at all/ to ask for a play_audio in LBA
1536 format, or ask for multi-session info in MSF format. However, for
1537 backward compatibility these format requests will be satisfied, but
1538 the requests to the low-level drivers will be sanitized in the more
1539 meaningful format indicated above.
1543 void sanitize_format(union cdrom_addr
*addr
,
1544 u_char
* curr
, u_char requested
)
1546 if (*curr
== requested
)
1547 return; /* nothing to be done! */
1548 if (requested
== CDROM_LBA
) {
1549 addr
->lba
= (int) addr
->msf
.frame
+
1550 75 * (addr
->msf
.second
- 2 + 60 * addr
->msf
.minute
);
1551 } else { /* CDROM_MSF */
1552 int lba
= addr
->lba
;
1553 addr
->msf
.frame
= lba
% 75;
1556 addr
->msf
.second
= lba
% 60;
1557 addr
->msf
.minute
= lba
/ 60;
1562 void init_cdrom_command(struct packet_command
*cgc
, void *buf
, int len
,
1565 memset(cgc
, 0, sizeof(struct packet_command
));
1567 memset(buf
, 0, len
);
1568 cgc
->buffer
= (char *) buf
;
1570 cgc
->data_direction
= type
;
1571 cgc
->timeout
= CDROM_DEF_TIMEOUT
;
1576 #define copy_key(dest,src) memcpy((dest), (src), sizeof(dvd_key))
1577 #define copy_chal(dest,src) memcpy((dest), (src), sizeof(dvd_challenge))
1579 static void setup_report_key(struct packet_command
*cgc
, unsigned agid
, unsigned type
)
1581 cgc
->cmd
[0] = GPCMD_REPORT_KEY
;
1582 cgc
->cmd
[10] = type
| (agid
<< 6);
1584 case 0: case 8: case 5: {
1597 cgc
->cmd
[9] = cgc
->buflen
;
1598 cgc
->data_direction
= CGC_DATA_READ
;
1601 static void setup_send_key(struct packet_command
*cgc
, unsigned agid
, unsigned type
)
1603 cgc
->cmd
[0] = GPCMD_SEND_KEY
;
1604 cgc
->cmd
[10] = type
| (agid
<< 6);
1619 cgc
->cmd
[9] = cgc
->buflen
;
1620 cgc
->data_direction
= CGC_DATA_WRITE
;
1623 static int dvd_do_auth(struct cdrom_device_info
*cdi
, dvd_authinfo
*ai
)
1627 struct packet_command cgc
;
1628 struct cdrom_device_ops
*cdo
= cdi
->ops
;
1629 rpc_state_t rpc_state
;
1631 memset(buf
, 0, sizeof(buf
));
1632 init_cdrom_command(&cgc
, buf
, 0, CGC_DATA_READ
);
1636 case DVD_LU_SEND_AGID
:
1637 cdinfo(CD_DVD
, "entering DVD_LU_SEND_AGID\n");
1639 setup_report_key(&cgc
, ai
->lsa
.agid
, 0);
1641 if ((ret
= cdo
->generic_packet(cdi
, &cgc
)))
1644 ai
->lsa
.agid
= buf
[7] >> 6;
1645 /* Returning data, let host change state */
1648 case DVD_LU_SEND_KEY1
:
1649 cdinfo(CD_DVD
, "entering DVD_LU_SEND_KEY1\n");
1650 setup_report_key(&cgc
, ai
->lsk
.agid
, 2);
1652 if ((ret
= cdo
->generic_packet(cdi
, &cgc
)))
1655 copy_key(ai
->lsk
.key
, &buf
[4]);
1656 /* Returning data, let host change state */
1659 case DVD_LU_SEND_CHALLENGE
:
1660 cdinfo(CD_DVD
, "entering DVD_LU_SEND_CHALLENGE\n");
1661 setup_report_key(&cgc
, ai
->lsc
.agid
, 1);
1663 if ((ret
= cdo
->generic_packet(cdi
, &cgc
)))
1666 copy_chal(ai
->lsc
.chal
, &buf
[4]);
1667 /* Returning data, let host change state */
1671 case DVD_LU_SEND_TITLE_KEY
:
1672 cdinfo(CD_DVD
, "entering DVD_LU_SEND_TITLE_KEY\n");
1674 setup_report_key(&cgc
, ai
->lstk
.agid
, 4);
1675 cgc
.cmd
[5] = ai
->lstk
.lba
;
1676 cgc
.cmd
[4] = ai
->lstk
.lba
>> 8;
1677 cgc
.cmd
[3] = ai
->lstk
.lba
>> 16;
1678 cgc
.cmd
[2] = ai
->lstk
.lba
>> 24;
1680 if ((ret
= cdo
->generic_packet(cdi
, &cgc
)))
1683 ai
->lstk
.cpm
= (buf
[4] >> 7) & 1;
1684 ai
->lstk
.cp_sec
= (buf
[4] >> 6) & 1;
1685 ai
->lstk
.cgms
= (buf
[4] >> 4) & 3;
1686 copy_key(ai
->lstk
.title_key
, &buf
[5]);
1687 /* Returning data, let host change state */
1690 case DVD_LU_SEND_ASF
:
1691 cdinfo(CD_DVD
, "entering DVD_LU_SEND_ASF\n");
1692 setup_report_key(&cgc
, ai
->lsasf
.agid
, 5);
1694 if ((ret
= cdo
->generic_packet(cdi
, &cgc
)))
1697 ai
->lsasf
.asf
= buf
[7] & 1;
1700 /* LU data receive (LU changes state) */
1701 case DVD_HOST_SEND_CHALLENGE
:
1702 cdinfo(CD_DVD
, "entering DVD_HOST_SEND_CHALLENGE\n");
1703 setup_send_key(&cgc
, ai
->hsc
.agid
, 1);
1705 copy_chal(&buf
[4], ai
->hsc
.chal
);
1707 if ((ret
= cdo
->generic_packet(cdi
, &cgc
)))
1710 ai
->type
= DVD_LU_SEND_KEY1
;
1713 case DVD_HOST_SEND_KEY2
:
1714 cdinfo(CD_DVD
, "entering DVD_HOST_SEND_KEY2\n");
1715 setup_send_key(&cgc
, ai
->hsk
.agid
, 3);
1717 copy_key(&buf
[4], ai
->hsk
.key
);
1719 if ((ret
= cdo
->generic_packet(cdi
, &cgc
))) {
1720 ai
->type
= DVD_AUTH_FAILURE
;
1723 ai
->type
= DVD_AUTH_ESTABLISHED
;
1727 case DVD_INVALIDATE_AGID
:
1729 cdinfo(CD_DVD
, "entering DVD_INVALIDATE_AGID\n");
1730 setup_report_key(&cgc
, ai
->lsa
.agid
, 0x3f);
1731 if ((ret
= cdo
->generic_packet(cdi
, &cgc
)))
1735 /* Get region settings */
1736 case DVD_LU_SEND_RPC_STATE
:
1737 cdinfo(CD_DVD
, "entering DVD_LU_SEND_RPC_STATE\n");
1738 setup_report_key(&cgc
, 0, 8);
1739 memset(&rpc_state
, 0, sizeof(rpc_state_t
));
1740 cgc
.buffer
= (char *) &rpc_state
;
1742 if ((ret
= cdo
->generic_packet(cdi
, &cgc
)))
1745 ai
->lrpcs
.type
= rpc_state
.type_code
;
1746 ai
->lrpcs
.vra
= rpc_state
.vra
;
1747 ai
->lrpcs
.ucca
= rpc_state
.ucca
;
1748 ai
->lrpcs
.region_mask
= rpc_state
.region_mask
;
1749 ai
->lrpcs
.rpc_scheme
= rpc_state
.rpc_scheme
;
1752 /* Set region settings */
1753 case DVD_HOST_SEND_RPC_STATE
:
1754 cdinfo(CD_DVD
, "entering DVD_HOST_SEND_RPC_STATE\n");
1755 setup_send_key(&cgc
, 0, 6);
1757 buf
[4] = ai
->hrpcs
.pdrc
;
1759 if ((ret
= cdo
->generic_packet(cdi
, &cgc
)))
1764 cdinfo(CD_WARNING
, "Invalid DVD key ioctl (%d)\n", ai
->type
);
1771 static int dvd_read_physical(struct cdrom_device_info
*cdi
, dvd_struct
*s
,
1772 struct packet_command
*cgc
)
1774 unsigned char buf
[21], *base
;
1775 struct dvd_layer
*layer
;
1776 struct cdrom_device_ops
*cdo
= cdi
->ops
;
1777 int ret
, layer_num
= s
->physical
.layer_num
;
1779 if (layer_num
>= DVD_LAYERS
)
1782 init_cdrom_command(cgc
, buf
, sizeof(buf
), CGC_DATA_READ
);
1783 cgc
->cmd
[0] = GPCMD_READ_DVD_STRUCTURE
;
1784 cgc
->cmd
[6] = layer_num
;
1785 cgc
->cmd
[7] = s
->type
;
1786 cgc
->cmd
[9] = cgc
->buflen
& 0xff;
1789 * refrain from reporting errors on non-existing layers (mainly)
1793 ret
= cdo
->generic_packet(cdi
, cgc
);
1798 layer
= &s
->physical
.layer
[layer_num
];
1801 * place the data... really ugly, but at least we won't have to
1802 * worry about endianess in userspace.
1804 memset(layer
, 0, sizeof(*layer
));
1805 layer
->book_version
= base
[0] & 0xf;
1806 layer
->book_type
= base
[0] >> 4;
1807 layer
->min_rate
= base
[1] & 0xf;
1808 layer
->disc_size
= base
[1] >> 4;
1809 layer
->layer_type
= base
[2] & 0xf;
1810 layer
->track_path
= (base
[2] >> 4) & 1;
1811 layer
->nlayers
= (base
[2] >> 5) & 3;
1812 layer
->track_density
= base
[3] & 0xf;
1813 layer
->linear_density
= base
[3] >> 4;
1814 layer
->start_sector
= base
[5] << 16 | base
[6] << 8 | base
[7];
1815 layer
->end_sector
= base
[9] << 16 | base
[10] << 8 | base
[11];
1816 layer
->end_sector_l0
= base
[13] << 16 | base
[14] << 8 | base
[15];
1817 layer
->bca
= base
[16] >> 7;
1822 static int dvd_read_copyright(struct cdrom_device_info
*cdi
, dvd_struct
*s
,
1823 struct packet_command
*cgc
)
1827 struct cdrom_device_ops
*cdo
= cdi
->ops
;
1829 init_cdrom_command(cgc
, buf
, sizeof(buf
), CGC_DATA_READ
);
1830 cgc
->cmd
[0] = GPCMD_READ_DVD_STRUCTURE
;
1831 cgc
->cmd
[6] = s
->copyright
.layer_num
;
1832 cgc
->cmd
[7] = s
->type
;
1833 cgc
->cmd
[8] = cgc
->buflen
>> 8;
1834 cgc
->cmd
[9] = cgc
->buflen
& 0xff;
1836 ret
= cdo
->generic_packet(cdi
, cgc
);
1840 s
->copyright
.cpst
= buf
[4];
1841 s
->copyright
.rmi
= buf
[5];
1846 static int dvd_read_disckey(struct cdrom_device_info
*cdi
, dvd_struct
*s
,
1847 struct packet_command
*cgc
)
1851 struct cdrom_device_ops
*cdo
= cdi
->ops
;
1853 size
= sizeof(s
->disckey
.value
) + 4;
1855 buf
= kmalloc(size
, GFP_KERNEL
);
1859 init_cdrom_command(cgc
, buf
, size
, CGC_DATA_READ
);
1860 cgc
->cmd
[0] = GPCMD_READ_DVD_STRUCTURE
;
1861 cgc
->cmd
[7] = s
->type
;
1862 cgc
->cmd
[8] = size
>> 8;
1863 cgc
->cmd
[9] = size
& 0xff;
1864 cgc
->cmd
[10] = s
->disckey
.agid
<< 6;
1866 ret
= cdo
->generic_packet(cdi
, cgc
);
1868 memcpy(s
->disckey
.value
, &buf
[4], sizeof(s
->disckey
.value
));
1874 static int dvd_read_bca(struct cdrom_device_info
*cdi
, dvd_struct
*s
,
1875 struct packet_command
*cgc
)
1877 int ret
, size
= 4 + 188;
1879 struct cdrom_device_ops
*cdo
= cdi
->ops
;
1881 buf
= kmalloc(size
, GFP_KERNEL
);
1885 init_cdrom_command(cgc
, buf
, size
, CGC_DATA_READ
);
1886 cgc
->cmd
[0] = GPCMD_READ_DVD_STRUCTURE
;
1887 cgc
->cmd
[7] = s
->type
;
1888 cgc
->cmd
[9] = cgc
->buflen
& 0xff;
1890 ret
= cdo
->generic_packet(cdi
, cgc
);
1894 s
->bca
.len
= buf
[0] << 8 | buf
[1];
1895 if (s
->bca
.len
< 12 || s
->bca
.len
> 188) {
1896 cdinfo(CD_WARNING
, "Received invalid BCA length (%d)\n", s
->bca
.len
);
1900 memcpy(s
->bca
.value
, &buf
[4], s
->bca
.len
);
1907 static int dvd_read_manufact(struct cdrom_device_info
*cdi
, dvd_struct
*s
,
1908 struct packet_command
*cgc
)
1912 struct cdrom_device_ops
*cdo
= cdi
->ops
;
1914 size
= sizeof(s
->manufact
.value
) + 4;
1916 buf
= kmalloc(size
, GFP_KERNEL
);
1920 init_cdrom_command(cgc
, buf
, size
, CGC_DATA_READ
);
1921 cgc
->cmd
[0] = GPCMD_READ_DVD_STRUCTURE
;
1922 cgc
->cmd
[7] = s
->type
;
1923 cgc
->cmd
[8] = size
>> 8;
1924 cgc
->cmd
[9] = size
& 0xff;
1926 ret
= cdo
->generic_packet(cdi
, cgc
);
1930 s
->manufact
.len
= buf
[0] << 8 | buf
[1];
1931 if (s
->manufact
.len
< 0) {
1932 cdinfo(CD_WARNING
, "Received invalid manufacture info length"
1933 " (%d)\n", s
->manufact
.len
);
1936 if (s
->manufact
.len
> 2048) {
1937 cdinfo(CD_WARNING
, "Received invalid manufacture info "
1938 "length (%d): truncating to 2048\n",
1940 s
->manufact
.len
= 2048;
1942 memcpy(s
->manufact
.value
, &buf
[4], s
->manufact
.len
);
1950 static int dvd_read_struct(struct cdrom_device_info
*cdi
, dvd_struct
*s
,
1951 struct packet_command
*cgc
)
1954 case DVD_STRUCT_PHYSICAL
:
1955 return dvd_read_physical(cdi
, s
, cgc
);
1957 case DVD_STRUCT_COPYRIGHT
:
1958 return dvd_read_copyright(cdi
, s
, cgc
);
1960 case DVD_STRUCT_DISCKEY
:
1961 return dvd_read_disckey(cdi
, s
, cgc
);
1963 case DVD_STRUCT_BCA
:
1964 return dvd_read_bca(cdi
, s
, cgc
);
1966 case DVD_STRUCT_MANUFACT
:
1967 return dvd_read_manufact(cdi
, s
, cgc
);
1970 cdinfo(CD_WARNING
, ": Invalid DVD structure read requested (%d)\n",
1976 int cdrom_mode_sense(struct cdrom_device_info
*cdi
,
1977 struct packet_command
*cgc
,
1978 int page_code
, int page_control
)
1980 struct cdrom_device_ops
*cdo
= cdi
->ops
;
1982 memset(cgc
->cmd
, 0, sizeof(cgc
->cmd
));
1984 cgc
->cmd
[0] = GPCMD_MODE_SENSE_10
;
1985 cgc
->cmd
[2] = page_code
| (page_control
<< 6);
1986 cgc
->cmd
[7] = cgc
->buflen
>> 8;
1987 cgc
->cmd
[8] = cgc
->buflen
& 0xff;
1988 cgc
->data_direction
= CGC_DATA_READ
;
1989 return cdo
->generic_packet(cdi
, cgc
);
1992 int cdrom_mode_select(struct cdrom_device_info
*cdi
,
1993 struct packet_command
*cgc
)
1995 struct cdrom_device_ops
*cdo
= cdi
->ops
;
1997 memset(cgc
->cmd
, 0, sizeof(cgc
->cmd
));
1998 memset(cgc
->buffer
, 0, 2);
1999 cgc
->cmd
[0] = GPCMD_MODE_SELECT_10
;
2000 cgc
->cmd
[1] = 0x10; /* PF */
2001 cgc
->cmd
[7] = cgc
->buflen
>> 8;
2002 cgc
->cmd
[8] = cgc
->buflen
& 0xff;
2003 cgc
->data_direction
= CGC_DATA_WRITE
;
2004 return cdo
->generic_packet(cdi
, cgc
);
2007 static int cdrom_read_subchannel(struct cdrom_device_info
*cdi
,
2008 struct cdrom_subchnl
*subchnl
, int mcn
)
2010 struct cdrom_device_ops
*cdo
= cdi
->ops
;
2011 struct packet_command cgc
;
2015 init_cdrom_command(&cgc
, buffer
, 16, CGC_DATA_READ
);
2016 cgc
.cmd
[0] = GPCMD_READ_SUBCHANNEL
;
2017 cgc
.cmd
[1] = 2; /* MSF addressing */
2018 cgc
.cmd
[2] = 0x40; /* request subQ data */
2019 cgc
.cmd
[3] = mcn
? 2 : 1;
2022 if ((ret
= cdo
->generic_packet(cdi
, &cgc
)))
2025 subchnl
->cdsc_audiostatus
= cgc
.buffer
[1];
2026 subchnl
->cdsc_format
= CDROM_MSF
;
2027 subchnl
->cdsc_ctrl
= cgc
.buffer
[5] & 0xf;
2028 subchnl
->cdsc_trk
= cgc
.buffer
[6];
2029 subchnl
->cdsc_ind
= cgc
.buffer
[7];
2031 subchnl
->cdsc_reladdr
.msf
.minute
= cgc
.buffer
[13];
2032 subchnl
->cdsc_reladdr
.msf
.second
= cgc
.buffer
[14];
2033 subchnl
->cdsc_reladdr
.msf
.frame
= cgc
.buffer
[15];
2034 subchnl
->cdsc_absaddr
.msf
.minute
= cgc
.buffer
[9];
2035 subchnl
->cdsc_absaddr
.msf
.second
= cgc
.buffer
[10];
2036 subchnl
->cdsc_absaddr
.msf
.frame
= cgc
.buffer
[11];
2042 * Specific READ_10 interface
2044 static int cdrom_read_cd(struct cdrom_device_info
*cdi
,
2045 struct packet_command
*cgc
, int lba
,
2046 int blocksize
, int nblocks
)
2048 struct cdrom_device_ops
*cdo
= cdi
->ops
;
2050 memset(&cgc
->cmd
, 0, sizeof(cgc
->cmd
));
2051 cgc
->cmd
[0] = GPCMD_READ_10
;
2052 cgc
->cmd
[2] = (lba
>> 24) & 0xff;
2053 cgc
->cmd
[3] = (lba
>> 16) & 0xff;
2054 cgc
->cmd
[4] = (lba
>> 8) & 0xff;
2055 cgc
->cmd
[5] = lba
& 0xff;
2056 cgc
->cmd
[6] = (nblocks
>> 16) & 0xff;
2057 cgc
->cmd
[7] = (nblocks
>> 8) & 0xff;
2058 cgc
->cmd
[8] = nblocks
& 0xff;
2059 cgc
->buflen
= blocksize
* nblocks
;
2060 return cdo
->generic_packet(cdi
, cgc
);
2063 /* very generic interface for reading the various types of blocks */
2064 static int cdrom_read_block(struct cdrom_device_info
*cdi
,
2065 struct packet_command
*cgc
,
2066 int lba
, int nblocks
, int format
, int blksize
)
2068 struct cdrom_device_ops
*cdo
= cdi
->ops
;
2070 memset(&cgc
->cmd
, 0, sizeof(cgc
->cmd
));
2071 cgc
->cmd
[0] = GPCMD_READ_CD
;
2072 /* expected sector size - cdda,mode1,etc. */
2073 cgc
->cmd
[1] = format
<< 2;
2074 /* starting address */
2075 cgc
->cmd
[2] = (lba
>> 24) & 0xff;
2076 cgc
->cmd
[3] = (lba
>> 16) & 0xff;
2077 cgc
->cmd
[4] = (lba
>> 8) & 0xff;
2078 cgc
->cmd
[5] = lba
& 0xff;
2079 /* number of blocks */
2080 cgc
->cmd
[6] = (nblocks
>> 16) & 0xff;
2081 cgc
->cmd
[7] = (nblocks
>> 8) & 0xff;
2082 cgc
->cmd
[8] = nblocks
& 0xff;
2083 cgc
->buflen
= blksize
* nblocks
;
2085 /* set the header info returned */
2087 case CD_FRAMESIZE_RAW0
: cgc
->cmd
[9] = 0x58; break;
2088 case CD_FRAMESIZE_RAW1
: cgc
->cmd
[9] = 0x78; break;
2089 case CD_FRAMESIZE_RAW
: cgc
->cmd
[9] = 0xf8; break;
2090 default : cgc
->cmd
[9] = 0x10;
2093 return cdo
->generic_packet(cdi
, cgc
);
2096 static int cdrom_read_cdda_old(struct cdrom_device_info
*cdi
, __u8 __user
*ubuf
,
2097 int lba
, int nframes
)
2099 struct packet_command cgc
;
2103 cdi
->last_sense
= 0;
2105 memset(&cgc
, 0, sizeof(cgc
));
2108 * start with will ra.nframes size, back down if alloc fails
2112 cgc
.buffer
= kmalloc(CD_FRAMESIZE_RAW
* nr
, GFP_KERNEL
);
2122 if (!access_ok(VERIFY_WRITE
, ubuf
, nframes
* CD_FRAMESIZE_RAW
)) {
2127 cgc
.data_direction
= CGC_DATA_READ
;
2128 while (nframes
> 0) {
2132 ret
= cdrom_read_block(cdi
, &cgc
, lba
, nr
, 1, CD_FRAMESIZE_RAW
);
2135 if (__copy_to_user(ubuf
, cgc
.buffer
, CD_FRAMESIZE_RAW
* nr
)) {
2139 ubuf
+= CD_FRAMESIZE_RAW
* nr
;
2148 static int cdrom_read_cdda_bpc(struct cdrom_device_info
*cdi
, __u8 __user
*ubuf
,
2149 int lba
, int nframes
)
2151 struct request_queue
*q
= cdi
->disk
->queue
;
2160 cdi
->last_sense
= 0;
2164 if (cdi
->cdda_method
== CDDA_BPC_SINGLE
)
2166 if (nr
* CD_FRAMESIZE_RAW
> (queue_max_sectors(q
) << 9))
2167 nr
= (queue_max_sectors(q
) << 9) / CD_FRAMESIZE_RAW
;
2169 len
= nr
* CD_FRAMESIZE_RAW
;
2171 rq
= blk_get_request(q
, READ
, GFP_KERNEL
);
2177 ret
= blk_rq_map_user(q
, rq
, NULL
, ubuf
, len
, GFP_KERNEL
);
2179 blk_put_request(rq
);
2183 rq
->cmd
[0] = GPCMD_READ_CD
;
2184 rq
->cmd
[1] = 1 << 2;
2185 rq
->cmd
[2] = (lba
>> 24) & 0xff;
2186 rq
->cmd
[3] = (lba
>> 16) & 0xff;
2187 rq
->cmd
[4] = (lba
>> 8) & 0xff;
2188 rq
->cmd
[5] = lba
& 0xff;
2189 rq
->cmd
[6] = (nr
>> 16) & 0xff;
2190 rq
->cmd
[7] = (nr
>> 8) & 0xff;
2191 rq
->cmd
[8] = nr
& 0xff;
2195 rq
->cmd_type
= REQ_TYPE_BLOCK_PC
;
2196 rq
->timeout
= 60 * HZ
;
2199 if (blk_execute_rq(q
, cdi
->disk
, rq
, 0)) {
2200 struct request_sense
*s
= rq
->sense
;
2202 cdi
->last_sense
= s
->sense_key
;
2205 if (blk_rq_unmap_user(bio
))
2207 blk_put_request(rq
);
2220 static int cdrom_read_cdda(struct cdrom_device_info
*cdi
, __u8 __user
*ubuf
,
2221 int lba
, int nframes
)
2225 if (cdi
->cdda_method
== CDDA_OLD
)
2226 return cdrom_read_cdda_old(cdi
, ubuf
, lba
, nframes
);
2230 * for anything else than success and io error, we need to retry
2232 ret
= cdrom_read_cdda_bpc(cdi
, ubuf
, lba
, nframes
);
2233 if (!ret
|| ret
!= -EIO
)
2237 * I've seen drives get sense 4/8/3 udma crc errors on multi
2238 * frame dma, so drop to single frame dma if we need to
2240 if (cdi
->cdda_method
== CDDA_BPC_FULL
&& nframes
> 1) {
2241 pr_info("dropping to single frame dma\n");
2242 cdi
->cdda_method
= CDDA_BPC_SINGLE
;
2247 * so we have an io error of some sort with multi frame dma. if the
2248 * condition wasn't a hardware error
2249 * problems, not for any error
2251 if (cdi
->last_sense
!= 0x04 && cdi
->last_sense
!= 0x0b)
2254 pr_info("dropping to old style cdda (sense=%x)\n", cdi
->last_sense
);
2255 cdi
->cdda_method
= CDDA_OLD
;
2256 return cdrom_read_cdda_old(cdi
, ubuf
, lba
, nframes
);
2259 static int cdrom_ioctl_multisession(struct cdrom_device_info
*cdi
,
2262 struct cdrom_multisession ms_info
;
2263 u8 requested_format
;
2266 cdinfo(CD_DO_IOCTL
, "entering CDROMMULTISESSION\n");
2268 if (!(cdi
->ops
->capability
& CDC_MULTI_SESSION
))
2271 if (copy_from_user(&ms_info
, argp
, sizeof(ms_info
)))
2274 requested_format
= ms_info
.addr_format
;
2275 if (requested_format
!= CDROM_MSF
&& requested_format
!= CDROM_LBA
)
2277 ms_info
.addr_format
= CDROM_LBA
;
2279 ret
= cdi
->ops
->get_last_session(cdi
, &ms_info
);
2283 sanitize_format(&ms_info
.addr
, &ms_info
.addr_format
, requested_format
);
2285 if (copy_to_user(argp
, &ms_info
, sizeof(ms_info
)))
2288 cdinfo(CD_DO_IOCTL
, "CDROMMULTISESSION successful\n");
2292 static int cdrom_ioctl_eject(struct cdrom_device_info
*cdi
)
2294 cdinfo(CD_DO_IOCTL
, "entering CDROMEJECT\n");
2296 if (!CDROM_CAN(CDC_OPEN_TRAY
))
2298 if (cdi
->use_count
!= 1 || keeplocked
)
2300 if (CDROM_CAN(CDC_LOCK
)) {
2301 int ret
= cdi
->ops
->lock_door(cdi
, 0);
2306 return cdi
->ops
->tray_move(cdi
, 1);
2309 static int cdrom_ioctl_closetray(struct cdrom_device_info
*cdi
)
2311 cdinfo(CD_DO_IOCTL
, "entering CDROMCLOSETRAY\n");
2313 if (!CDROM_CAN(CDC_CLOSE_TRAY
))
2315 return cdi
->ops
->tray_move(cdi
, 0);
2318 static int cdrom_ioctl_eject_sw(struct cdrom_device_info
*cdi
,
2321 cdinfo(CD_DO_IOCTL
, "entering CDROMEJECT_SW\n");
2323 if (!CDROM_CAN(CDC_OPEN_TRAY
))
2328 cdi
->options
&= ~(CDO_AUTO_CLOSE
| CDO_AUTO_EJECT
);
2330 cdi
->options
|= CDO_AUTO_CLOSE
| CDO_AUTO_EJECT
;
2334 static int cdrom_ioctl_media_changed(struct cdrom_device_info
*cdi
,
2337 struct cdrom_changer_info
*info
;
2340 cdinfo(CD_DO_IOCTL
, "entering CDROM_MEDIA_CHANGED\n");
2342 if (!CDROM_CAN(CDC_MEDIA_CHANGED
))
2345 /* cannot select disc or select current disc */
2346 if (!CDROM_CAN(CDC_SELECT_DISC
) || arg
== CDSL_CURRENT
)
2347 return media_changed(cdi
, 1);
2349 if ((unsigned int)arg
>= cdi
->capacity
)
2352 info
= kmalloc(sizeof(*info
), GFP_KERNEL
);
2356 ret
= cdrom_read_mech_status(cdi
, info
);
2358 ret
= info
->slots
[arg
].change
;
2363 static int cdrom_ioctl_set_options(struct cdrom_device_info
*cdi
,
2366 cdinfo(CD_DO_IOCTL
, "entering CDROM_SET_OPTIONS\n");
2369 * Options need to be in sync with capability.
2370 * Too late for that, so we have to check each one separately.
2373 case CDO_USE_FFLAGS
:
2374 case CDO_CHECK_TYPE
:
2377 if (!CDROM_CAN(CDC_LOCK
))
2381 return cdi
->options
;
2382 /* default is basically CDO_[AUTO_CLOSE|AUTO_EJECT] */
2384 if (!CDROM_CAN(arg
))
2387 cdi
->options
|= (int) arg
;
2388 return cdi
->options
;
2391 static int cdrom_ioctl_clear_options(struct cdrom_device_info
*cdi
,
2394 cdinfo(CD_DO_IOCTL
, "entering CDROM_CLEAR_OPTIONS\n");
2396 cdi
->options
&= ~(int) arg
;
2397 return cdi
->options
;
2400 static int cdrom_ioctl_select_speed(struct cdrom_device_info
*cdi
,
2403 cdinfo(CD_DO_IOCTL
, "entering CDROM_SELECT_SPEED\n");
2405 if (!CDROM_CAN(CDC_SELECT_SPEED
))
2407 return cdi
->ops
->select_speed(cdi
, arg
);
2410 static int cdrom_ioctl_select_disc(struct cdrom_device_info
*cdi
,
2413 cdinfo(CD_DO_IOCTL
, "entering CDROM_SELECT_DISC\n");
2415 if (!CDROM_CAN(CDC_SELECT_DISC
))
2418 if (arg
!= CDSL_CURRENT
&& arg
!= CDSL_NONE
) {
2419 if ((int)arg
>= cdi
->capacity
)
2424 * ->select_disc is a hook to allow a driver-specific way of
2425 * seleting disc. However, since there is no equivalent hook for
2426 * cdrom_slot_status this may not actually be useful...
2428 if (cdi
->ops
->select_disc
)
2429 return cdi
->ops
->select_disc(cdi
, arg
);
2431 cdinfo(CD_CHANGER
, "Using generic cdrom_select_disc()\n");
2432 return cdrom_select_disc(cdi
, arg
);
2435 static int cdrom_ioctl_reset(struct cdrom_device_info
*cdi
,
2436 struct block_device
*bdev
)
2438 cdinfo(CD_DO_IOCTL
, "entering CDROM_RESET\n");
2440 if (!capable(CAP_SYS_ADMIN
))
2442 if (!CDROM_CAN(CDC_RESET
))
2444 invalidate_bdev(bdev
);
2445 return cdi
->ops
->reset(cdi
);
2448 static int cdrom_ioctl_lock_door(struct cdrom_device_info
*cdi
,
2451 cdinfo(CD_DO_IOCTL
, "%socking door.\n", arg
? "L" : "Unl");
2453 if (!CDROM_CAN(CDC_LOCK
))
2454 return -EDRIVE_CANT_DO_THIS
;
2456 keeplocked
= arg
? 1 : 0;
2459 * Don't unlock the door on multiple opens by default, but allow
2462 if (cdi
->use_count
!= 1 && !arg
&& !capable(CAP_SYS_ADMIN
))
2464 return cdi
->ops
->lock_door(cdi
, arg
);
2467 static int cdrom_ioctl_debug(struct cdrom_device_info
*cdi
,
2470 cdinfo(CD_DO_IOCTL
, "%sabling debug.\n", arg
? "En" : "Dis");
2472 if (!capable(CAP_SYS_ADMIN
))
2474 debug
= arg
? 1 : 0;
2478 static int cdrom_ioctl_get_capability(struct cdrom_device_info
*cdi
)
2480 cdinfo(CD_DO_IOCTL
, "entering CDROM_GET_CAPABILITY\n");
2481 return (cdi
->ops
->capability
& ~cdi
->mask
);
2485 * The following function is implemented, although very few audio
2486 * discs give Universal Product Code information, which should just be
2487 * the Medium Catalog Number on the box. Note, that the way the code
2488 * is written on the CD is /not/ uniform across all discs!
2490 static int cdrom_ioctl_get_mcn(struct cdrom_device_info
*cdi
,
2493 struct cdrom_mcn mcn
;
2496 cdinfo(CD_DO_IOCTL
, "entering CDROM_GET_MCN\n");
2498 if (!(cdi
->ops
->capability
& CDC_MCN
))
2500 ret
= cdi
->ops
->get_mcn(cdi
, &mcn
);
2504 if (copy_to_user(argp
, &mcn
, sizeof(mcn
)))
2506 cdinfo(CD_DO_IOCTL
, "CDROM_GET_MCN successful\n");
2510 static int cdrom_ioctl_drive_status(struct cdrom_device_info
*cdi
,
2513 cdinfo(CD_DO_IOCTL
, "entering CDROM_DRIVE_STATUS\n");
2515 if (!(cdi
->ops
->capability
& CDC_DRIVE_STATUS
))
2517 if (!CDROM_CAN(CDC_SELECT_DISC
) ||
2518 (arg
== CDSL_CURRENT
|| arg
== CDSL_NONE
))
2519 return cdi
->ops
->drive_status(cdi
, CDSL_CURRENT
);
2520 if (((int)arg
>= cdi
->capacity
))
2522 return cdrom_slot_status(cdi
, arg
);
2526 * Ok, this is where problems start. The current interface for the
2527 * CDROM_DISC_STATUS ioctl is flawed. It makes the false assumption that
2528 * CDs are all CDS_DATA_1 or all CDS_AUDIO, etc. Unfortunately, while this
2529 * is often the case, it is also very common for CDs to have some tracks
2530 * with data, and some tracks with audio. Just because I feel like it,
2531 * I declare the following to be the best way to cope. If the CD has ANY
2532 * data tracks on it, it will be returned as a data CD. If it has any XA
2533 * tracks, I will return it as that. Now I could simplify this interface
2534 * by combining these returns with the above, but this more clearly
2535 * demonstrates the problem with the current interface. Too bad this
2536 * wasn't designed to use bitmasks... -Erik
2538 * Well, now we have the option CDS_MIXED: a mixed-type CD.
2539 * User level programmers might feel the ioctl is not very useful.
2542 static int cdrom_ioctl_disc_status(struct cdrom_device_info
*cdi
)
2546 cdinfo(CD_DO_IOCTL
, "entering CDROM_DISC_STATUS\n");
2548 cdrom_count_tracks(cdi
, &tracks
);
2550 return tracks
.error
;
2552 /* Policy mode on */
2553 if (tracks
.audio
> 0) {
2554 if (!tracks
.data
&& !tracks
.cdi
&& !tracks
.xa
)
2564 if (tracks
.data
> 0)
2566 /* Policy mode off */
2568 cdinfo(CD_WARNING
,"This disc doesn't have any tracks I recognize!\n");
2572 static int cdrom_ioctl_changer_nslots(struct cdrom_device_info
*cdi
)
2574 cdinfo(CD_DO_IOCTL
, "entering CDROM_CHANGER_NSLOTS\n");
2575 return cdi
->capacity
;
2578 static int cdrom_ioctl_get_subchnl(struct cdrom_device_info
*cdi
,
2581 struct cdrom_subchnl q
;
2585 /* cdinfo(CD_DO_IOCTL,"entering CDROMSUBCHNL\n");*/
2587 if (copy_from_user(&q
, argp
, sizeof(q
)))
2590 requested
= q
.cdsc_format
;
2591 if (requested
!= CDROM_MSF
&& requested
!= CDROM_LBA
)
2593 q
.cdsc_format
= CDROM_MSF
;
2595 ret
= cdi
->ops
->audio_ioctl(cdi
, CDROMSUBCHNL
, &q
);
2599 back
= q
.cdsc_format
; /* local copy */
2600 sanitize_format(&q
.cdsc_absaddr
, &back
, requested
);
2601 sanitize_format(&q
.cdsc_reladdr
, &q
.cdsc_format
, requested
);
2603 if (copy_to_user(argp
, &q
, sizeof(q
)))
2605 /* cdinfo(CD_DO_IOCTL, "CDROMSUBCHNL successful\n"); */
2609 static int cdrom_ioctl_read_tochdr(struct cdrom_device_info
*cdi
,
2612 struct cdrom_tochdr header
;
2615 /* cdinfo(CD_DO_IOCTL, "entering CDROMREADTOCHDR\n"); */
2617 if (copy_from_user(&header
, argp
, sizeof(header
)))
2620 ret
= cdi
->ops
->audio_ioctl(cdi
, CDROMREADTOCHDR
, &header
);
2624 if (copy_to_user(argp
, &header
, sizeof(header
)))
2626 /* cdinfo(CD_DO_IOCTL, "CDROMREADTOCHDR successful\n"); */
2630 static int cdrom_ioctl_read_tocentry(struct cdrom_device_info
*cdi
,
2633 struct cdrom_tocentry entry
;
2634 u8 requested_format
;
2637 /* cdinfo(CD_DO_IOCTL, "entering CDROMREADTOCENTRY\n"); */
2639 if (copy_from_user(&entry
, argp
, sizeof(entry
)))
2642 requested_format
= entry
.cdte_format
;
2643 if (requested_format
!= CDROM_MSF
&& requested_format
!= CDROM_LBA
)
2645 /* make interface to low-level uniform */
2646 entry
.cdte_format
= CDROM_MSF
;
2647 ret
= cdi
->ops
->audio_ioctl(cdi
, CDROMREADTOCENTRY
, &entry
);
2650 sanitize_format(&entry
.cdte_addr
, &entry
.cdte_format
, requested_format
);
2652 if (copy_to_user(argp
, &entry
, sizeof(entry
)))
2654 /* cdinfo(CD_DO_IOCTL, "CDROMREADTOCENTRY successful\n"); */
2658 static int cdrom_ioctl_play_msf(struct cdrom_device_info
*cdi
,
2661 struct cdrom_msf msf
;
2663 cdinfo(CD_DO_IOCTL
, "entering CDROMPLAYMSF\n");
2665 if (!CDROM_CAN(CDC_PLAY_AUDIO
))
2667 if (copy_from_user(&msf
, argp
, sizeof(msf
)))
2669 return cdi
->ops
->audio_ioctl(cdi
, CDROMPLAYMSF
, &msf
);
2672 static int cdrom_ioctl_play_trkind(struct cdrom_device_info
*cdi
,
2678 cdinfo(CD_DO_IOCTL
, "entering CDROMPLAYTRKIND\n");
2680 if (!CDROM_CAN(CDC_PLAY_AUDIO
))
2682 if (copy_from_user(&ti
, argp
, sizeof(ti
)))
2685 ret
= check_for_audio_disc(cdi
, cdi
->ops
);
2688 return cdi
->ops
->audio_ioctl(cdi
, CDROMPLAYTRKIND
, &ti
);
2690 static int cdrom_ioctl_volctrl(struct cdrom_device_info
*cdi
,
2693 struct cdrom_volctrl volume
;
2695 cdinfo(CD_DO_IOCTL
, "entering CDROMVOLCTRL\n");
2697 if (!CDROM_CAN(CDC_PLAY_AUDIO
))
2699 if (copy_from_user(&volume
, argp
, sizeof(volume
)))
2701 return cdi
->ops
->audio_ioctl(cdi
, CDROMVOLCTRL
, &volume
);
2704 static int cdrom_ioctl_volread(struct cdrom_device_info
*cdi
,
2707 struct cdrom_volctrl volume
;
2710 cdinfo(CD_DO_IOCTL
, "entering CDROMVOLREAD\n");
2712 if (!CDROM_CAN(CDC_PLAY_AUDIO
))
2715 ret
= cdi
->ops
->audio_ioctl(cdi
, CDROMVOLREAD
, &volume
);
2719 if (copy_to_user(argp
, &volume
, sizeof(volume
)))
2724 static int cdrom_ioctl_audioctl(struct cdrom_device_info
*cdi
,
2729 cdinfo(CD_DO_IOCTL
, "doing audio ioctl (start/stop/pause/resume)\n");
2731 if (!CDROM_CAN(CDC_PLAY_AUDIO
))
2733 ret
= check_for_audio_disc(cdi
, cdi
->ops
);
2736 return cdi
->ops
->audio_ioctl(cdi
, cmd
, NULL
);
2740 * Just about every imaginable ioctl is supported in the Uniform layer
2742 * ATAPI / SCSI specific code now mainly resides in mmc_ioctl().
2744 int cdrom_ioctl(struct cdrom_device_info
*cdi
, struct block_device
*bdev
,
2745 fmode_t mode
, unsigned int cmd
, unsigned long arg
)
2747 void __user
*argp
= (void __user
*)arg
;
2751 * Try the generic SCSI command ioctl's first.
2753 ret
= scsi_cmd_blk_ioctl(bdev
, mode
, cmd
, argp
);
2758 case CDROMMULTISESSION
:
2759 return cdrom_ioctl_multisession(cdi
, argp
);
2761 return cdrom_ioctl_eject(cdi
);
2762 case CDROMCLOSETRAY
:
2763 return cdrom_ioctl_closetray(cdi
);
2765 return cdrom_ioctl_eject_sw(cdi
, arg
);
2766 case CDROM_MEDIA_CHANGED
:
2767 return cdrom_ioctl_media_changed(cdi
, arg
);
2768 case CDROM_SET_OPTIONS
:
2769 return cdrom_ioctl_set_options(cdi
, arg
);
2770 case CDROM_CLEAR_OPTIONS
:
2771 return cdrom_ioctl_clear_options(cdi
, arg
);
2772 case CDROM_SELECT_SPEED
:
2773 return cdrom_ioctl_select_speed(cdi
, arg
);
2774 case CDROM_SELECT_DISC
:
2775 return cdrom_ioctl_select_disc(cdi
, arg
);
2777 return cdrom_ioctl_reset(cdi
, bdev
);
2778 case CDROM_LOCKDOOR
:
2779 return cdrom_ioctl_lock_door(cdi
, arg
);
2781 return cdrom_ioctl_debug(cdi
, arg
);
2782 case CDROM_GET_CAPABILITY
:
2783 return cdrom_ioctl_get_capability(cdi
);
2785 return cdrom_ioctl_get_mcn(cdi
, argp
);
2786 case CDROM_DRIVE_STATUS
:
2787 return cdrom_ioctl_drive_status(cdi
, arg
);
2788 case CDROM_DISC_STATUS
:
2789 return cdrom_ioctl_disc_status(cdi
);
2790 case CDROM_CHANGER_NSLOTS
:
2791 return cdrom_ioctl_changer_nslots(cdi
);
2795 * Use the ioctls that are implemented through the generic_packet()
2796 * interface. this may look at bit funny, but if -ENOTTY is
2797 * returned that particular ioctl is not implemented and we
2798 * let it go through the device specific ones.
2800 if (CDROM_CAN(CDC_GENERIC_PACKET
)) {
2801 ret
= mmc_ioctl(cdi
, cmd
, arg
);
2807 * Note: most of the cdinfo() calls are commented out here,
2808 * because they fill up the sys log when CD players poll
2813 return cdrom_ioctl_get_subchnl(cdi
, argp
);
2814 case CDROMREADTOCHDR
:
2815 return cdrom_ioctl_read_tochdr(cdi
, argp
);
2816 case CDROMREADTOCENTRY
:
2817 return cdrom_ioctl_read_tocentry(cdi
, argp
);
2819 return cdrom_ioctl_play_msf(cdi
, argp
);
2820 case CDROMPLAYTRKIND
:
2821 return cdrom_ioctl_play_trkind(cdi
, argp
);
2823 return cdrom_ioctl_volctrl(cdi
, argp
);
2825 return cdrom_ioctl_volread(cdi
, argp
);
2830 return cdrom_ioctl_audioctl(cdi
, cmd
);
2837 * Required when we need to use READ_10 to issue other than 2048 block
2840 static int cdrom_switch_blocksize(struct cdrom_device_info
*cdi
, int size
)
2842 struct cdrom_device_ops
*cdo
= cdi
->ops
;
2843 struct packet_command cgc
;
2844 struct modesel_head mh
;
2846 memset(&mh
, 0, sizeof(mh
));
2847 mh
.block_desc_length
= 0x08;
2848 mh
.block_length_med
= (size
>> 8) & 0xff;
2849 mh
.block_length_lo
= size
& 0xff;
2851 memset(&cgc
, 0, sizeof(cgc
));
2853 cgc
.cmd
[1] = 1 << 4;
2855 cgc
.buflen
= sizeof(mh
);
2856 cgc
.buffer
= (char *) &mh
;
2857 cgc
.data_direction
= CGC_DATA_WRITE
;
2858 mh
.block_desc_length
= 0x08;
2859 mh
.block_length_med
= (size
>> 8) & 0xff;
2860 mh
.block_length_lo
= size
& 0xff;
2862 return cdo
->generic_packet(cdi
, &cgc
);
2865 static noinline
int mmc_ioctl_cdrom_read_data(struct cdrom_device_info
*cdi
,
2867 struct packet_command
*cgc
,
2870 struct request_sense sense
;
2871 struct cdrom_msf msf
;
2872 int blocksize
= 0, format
= 0, lba
;
2877 blocksize
= CD_FRAMESIZE_RAW
;
2879 case CDROMREADMODE1
:
2880 blocksize
= CD_FRAMESIZE
;
2883 case CDROMREADMODE2
:
2884 blocksize
= CD_FRAMESIZE_RAW0
;
2887 IOCTL_IN(arg
, struct cdrom_msf
, msf
);
2888 lba
= msf_to_lba(msf
.cdmsf_min0
, msf
.cdmsf_sec0
, msf
.cdmsf_frame0
);
2889 /* FIXME: we need upper bound checking, too!! */
2893 cgc
->buffer
= kmalloc(blocksize
, GFP_KERNEL
);
2894 if (cgc
->buffer
== NULL
)
2897 memset(&sense
, 0, sizeof(sense
));
2898 cgc
->sense
= &sense
;
2899 cgc
->data_direction
= CGC_DATA_READ
;
2900 ret
= cdrom_read_block(cdi
, cgc
, lba
, 1, format
, blocksize
);
2901 if (ret
&& sense
.sense_key
== 0x05 &&
2902 sense
.asc
== 0x20 &&
2903 sense
.ascq
== 0x00) {
2905 * SCSI-II devices are not required to support
2906 * READ_CD, so let's try switching block size
2908 /* FIXME: switch back again... */
2909 ret
= cdrom_switch_blocksize(cdi
, blocksize
);
2913 ret
= cdrom_read_cd(cdi
, cgc
, lba
, blocksize
, 1);
2914 ret
|= cdrom_switch_blocksize(cdi
, blocksize
);
2916 if (!ret
&& copy_to_user(arg
, cgc
->buffer
, blocksize
))
2923 static noinline
int mmc_ioctl_cdrom_read_audio(struct cdrom_device_info
*cdi
,
2926 struct cdrom_read_audio ra
;
2929 IOCTL_IN(arg
, struct cdrom_read_audio
, ra
);
2931 if (ra
.addr_format
== CDROM_MSF
)
2932 lba
= msf_to_lba(ra
.addr
.msf
.minute
,
2935 else if (ra
.addr_format
== CDROM_LBA
)
2940 /* FIXME: we need upper bound checking, too!! */
2941 if (lba
< 0 || ra
.nframes
<= 0 || ra
.nframes
> CD_FRAMES
)
2944 return cdrom_read_cdda(cdi
, ra
.buf
, lba
, ra
.nframes
);
2947 static noinline
int mmc_ioctl_cdrom_subchannel(struct cdrom_device_info
*cdi
,
2951 struct cdrom_subchnl q
;
2952 u_char requested
, back
;
2953 IOCTL_IN(arg
, struct cdrom_subchnl
, q
);
2954 requested
= q
.cdsc_format
;
2955 if (!((requested
== CDROM_MSF
) ||
2956 (requested
== CDROM_LBA
)))
2958 q
.cdsc_format
= CDROM_MSF
;
2959 ret
= cdrom_read_subchannel(cdi
, &q
, 0);
2962 back
= q
.cdsc_format
; /* local copy */
2963 sanitize_format(&q
.cdsc_absaddr
, &back
, requested
);
2964 sanitize_format(&q
.cdsc_reladdr
, &q
.cdsc_format
, requested
);
2965 IOCTL_OUT(arg
, struct cdrom_subchnl
, q
);
2966 /* cdinfo(CD_DO_IOCTL, "CDROMSUBCHNL successful\n"); */
2970 static noinline
int mmc_ioctl_cdrom_play_msf(struct cdrom_device_info
*cdi
,
2972 struct packet_command
*cgc
)
2974 struct cdrom_device_ops
*cdo
= cdi
->ops
;
2975 struct cdrom_msf msf
;
2976 cdinfo(CD_DO_IOCTL
, "entering CDROMPLAYMSF\n");
2977 IOCTL_IN(arg
, struct cdrom_msf
, msf
);
2978 cgc
->cmd
[0] = GPCMD_PLAY_AUDIO_MSF
;
2979 cgc
->cmd
[3] = msf
.cdmsf_min0
;
2980 cgc
->cmd
[4] = msf
.cdmsf_sec0
;
2981 cgc
->cmd
[5] = msf
.cdmsf_frame0
;
2982 cgc
->cmd
[6] = msf
.cdmsf_min1
;
2983 cgc
->cmd
[7] = msf
.cdmsf_sec1
;
2984 cgc
->cmd
[8] = msf
.cdmsf_frame1
;
2985 cgc
->data_direction
= CGC_DATA_NONE
;
2986 return cdo
->generic_packet(cdi
, cgc
);
2989 static noinline
int mmc_ioctl_cdrom_play_blk(struct cdrom_device_info
*cdi
,
2991 struct packet_command
*cgc
)
2993 struct cdrom_device_ops
*cdo
= cdi
->ops
;
2994 struct cdrom_blk blk
;
2995 cdinfo(CD_DO_IOCTL
, "entering CDROMPLAYBLK\n");
2996 IOCTL_IN(arg
, struct cdrom_blk
, blk
);
2997 cgc
->cmd
[0] = GPCMD_PLAY_AUDIO_10
;
2998 cgc
->cmd
[2] = (blk
.from
>> 24) & 0xff;
2999 cgc
->cmd
[3] = (blk
.from
>> 16) & 0xff;
3000 cgc
->cmd
[4] = (blk
.from
>> 8) & 0xff;
3001 cgc
->cmd
[5] = blk
.from
& 0xff;
3002 cgc
->cmd
[7] = (blk
.len
>> 8) & 0xff;
3003 cgc
->cmd
[8] = blk
.len
& 0xff;
3004 cgc
->data_direction
= CGC_DATA_NONE
;
3005 return cdo
->generic_packet(cdi
, cgc
);
3008 static noinline
int mmc_ioctl_cdrom_volume(struct cdrom_device_info
*cdi
,
3010 struct packet_command
*cgc
,
3013 struct cdrom_volctrl volctrl
;
3014 unsigned char buffer
[32];
3015 char mask
[sizeof(buffer
)];
3016 unsigned short offset
;
3019 cdinfo(CD_DO_IOCTL
, "entering CDROMVOLUME\n");
3021 IOCTL_IN(arg
, struct cdrom_volctrl
, volctrl
);
3023 cgc
->buffer
= buffer
;
3025 ret
= cdrom_mode_sense(cdi
, cgc
, GPMODE_AUDIO_CTL_PAGE
, 0);
3029 /* originally the code depended on buffer[1] to determine
3030 how much data is available for transfer. buffer[1] is
3031 unfortunately ambigious and the only reliable way seem
3032 to be to simply skip over the block descriptor... */
3033 offset
= 8 + be16_to_cpu(*(__be16
*)(buffer
+ 6));
3035 if (offset
+ 16 > sizeof(buffer
))
3038 if (offset
+ 16 > cgc
->buflen
) {
3039 cgc
->buflen
= offset
+ 16;
3040 ret
= cdrom_mode_sense(cdi
, cgc
,
3041 GPMODE_AUDIO_CTL_PAGE
, 0);
3047 if ((buffer
[offset
] & 0x3f) != GPMODE_AUDIO_CTL_PAGE
||
3048 buffer
[offset
+ 1] < 14)
3051 /* now we have the current volume settings. if it was only
3052 a CDROMVOLREAD, return these values */
3053 if (cmd
== CDROMVOLREAD
) {
3054 volctrl
.channel0
= buffer
[offset
+9];
3055 volctrl
.channel1
= buffer
[offset
+11];
3056 volctrl
.channel2
= buffer
[offset
+13];
3057 volctrl
.channel3
= buffer
[offset
+15];
3058 IOCTL_OUT(arg
, struct cdrom_volctrl
, volctrl
);
3062 /* get the volume mask */
3064 ret
= cdrom_mode_sense(cdi
, cgc
, GPMODE_AUDIO_CTL_PAGE
, 1);
3068 buffer
[offset
+ 9] = volctrl
.channel0
& mask
[offset
+ 9];
3069 buffer
[offset
+ 11] = volctrl
.channel1
& mask
[offset
+ 11];
3070 buffer
[offset
+ 13] = volctrl
.channel2
& mask
[offset
+ 13];
3071 buffer
[offset
+ 15] = volctrl
.channel3
& mask
[offset
+ 15];
3074 cgc
->buffer
= buffer
+ offset
- 8;
3075 memset(cgc
->buffer
, 0, 8);
3076 return cdrom_mode_select(cdi
, cgc
);
3079 static noinline
int mmc_ioctl_cdrom_start_stop(struct cdrom_device_info
*cdi
,
3080 struct packet_command
*cgc
,
3083 struct cdrom_device_ops
*cdo
= cdi
->ops
;
3084 cdinfo(CD_DO_IOCTL
, "entering CDROMSTART/CDROMSTOP\n");
3085 cgc
->cmd
[0] = GPCMD_START_STOP_UNIT
;
3087 cgc
->cmd
[4] = (cmd
== CDROMSTART
) ? 1 : 0;
3088 cgc
->data_direction
= CGC_DATA_NONE
;
3089 return cdo
->generic_packet(cdi
, cgc
);
3092 static noinline
int mmc_ioctl_cdrom_pause_resume(struct cdrom_device_info
*cdi
,
3093 struct packet_command
*cgc
,
3096 struct cdrom_device_ops
*cdo
= cdi
->ops
;
3097 cdinfo(CD_DO_IOCTL
, "entering CDROMPAUSE/CDROMRESUME\n");
3098 cgc
->cmd
[0] = GPCMD_PAUSE_RESUME
;
3099 cgc
->cmd
[8] = (cmd
== CDROMRESUME
) ? 1 : 0;
3100 cgc
->data_direction
= CGC_DATA_NONE
;
3101 return cdo
->generic_packet(cdi
, cgc
);
3104 static noinline
int mmc_ioctl_dvd_read_struct(struct cdrom_device_info
*cdi
,
3106 struct packet_command
*cgc
)
3110 int size
= sizeof(dvd_struct
);
3112 if (!CDROM_CAN(CDC_DVD
))
3115 s
= kmalloc(size
, GFP_KERNEL
);
3119 cdinfo(CD_DO_IOCTL
, "entering DVD_READ_STRUCT\n");
3120 if (copy_from_user(s
, arg
, size
)) {
3125 ret
= dvd_read_struct(cdi
, s
, cgc
);
3129 if (copy_to_user(arg
, s
, size
))
3136 static noinline
int mmc_ioctl_dvd_auth(struct cdrom_device_info
*cdi
,
3141 if (!CDROM_CAN(CDC_DVD
))
3143 cdinfo(CD_DO_IOCTL
, "entering DVD_AUTH\n");
3144 IOCTL_IN(arg
, dvd_authinfo
, ai
);
3145 ret
= dvd_do_auth(cdi
, &ai
);
3148 IOCTL_OUT(arg
, dvd_authinfo
, ai
);
3152 static noinline
int mmc_ioctl_cdrom_next_writable(struct cdrom_device_info
*cdi
,
3157 cdinfo(CD_DO_IOCTL
, "entering CDROM_NEXT_WRITABLE\n");
3158 ret
= cdrom_get_next_writable(cdi
, &next
);
3161 IOCTL_OUT(arg
, long, next
);
3165 static noinline
int mmc_ioctl_cdrom_last_written(struct cdrom_device_info
*cdi
,
3170 cdinfo(CD_DO_IOCTL
, "entering CDROM_LAST_WRITTEN\n");
3171 ret
= cdrom_get_last_written(cdi
, &last
);
3174 IOCTL_OUT(arg
, long, last
);
3178 static int mmc_ioctl(struct cdrom_device_info
*cdi
, unsigned int cmd
,
3181 struct packet_command cgc
;
3182 void __user
*userptr
= (void __user
*)arg
;
3184 memset(&cgc
, 0, sizeof(cgc
));
3186 /* build a unified command and queue it through
3187 cdo->generic_packet() */
3190 case CDROMREADMODE1
:
3191 case CDROMREADMODE2
:
3192 return mmc_ioctl_cdrom_read_data(cdi
, userptr
, &cgc
, cmd
);
3193 case CDROMREADAUDIO
:
3194 return mmc_ioctl_cdrom_read_audio(cdi
, userptr
);
3196 return mmc_ioctl_cdrom_subchannel(cdi
, userptr
);
3198 return mmc_ioctl_cdrom_play_msf(cdi
, userptr
, &cgc
);
3200 return mmc_ioctl_cdrom_play_blk(cdi
, userptr
, &cgc
);
3203 return mmc_ioctl_cdrom_volume(cdi
, userptr
, &cgc
, cmd
);
3206 return mmc_ioctl_cdrom_start_stop(cdi
, &cgc
, cmd
);
3209 return mmc_ioctl_cdrom_pause_resume(cdi
, &cgc
, cmd
);
3210 case DVD_READ_STRUCT
:
3211 return mmc_ioctl_dvd_read_struct(cdi
, userptr
, &cgc
);
3213 return mmc_ioctl_dvd_auth(cdi
, userptr
);
3214 case CDROM_NEXT_WRITABLE
:
3215 return mmc_ioctl_cdrom_next_writable(cdi
, userptr
);
3216 case CDROM_LAST_WRITTEN
:
3217 return mmc_ioctl_cdrom_last_written(cdi
, userptr
);
3223 static int cdrom_get_track_info(struct cdrom_device_info
*cdi
, __u16 track
, __u8 type
,
3224 track_information
*ti
)
3226 struct cdrom_device_ops
*cdo
= cdi
->ops
;
3227 struct packet_command cgc
;
3230 init_cdrom_command(&cgc
, ti
, 8, CGC_DATA_READ
);
3231 cgc
.cmd
[0] = GPCMD_READ_TRACK_RZONE_INFO
;
3232 cgc
.cmd
[1] = type
& 3;
3233 cgc
.cmd
[4] = (track
& 0xff00) >> 8;
3234 cgc
.cmd
[5] = track
& 0xff;
3238 if ((ret
= cdo
->generic_packet(cdi
, &cgc
)))
3241 buflen
= be16_to_cpu(ti
->track_information_length
) +
3242 sizeof(ti
->track_information_length
);
3244 if (buflen
> sizeof(track_information
))
3245 buflen
= sizeof(track_information
);
3247 cgc
.cmd
[8] = cgc
.buflen
= buflen
;
3248 if ((ret
= cdo
->generic_packet(cdi
, &cgc
)))
3251 /* return actual fill size */
3255 /* requires CD R/RW */
3256 static int cdrom_get_disc_info(struct cdrom_device_info
*cdi
, disc_information
*di
)
3258 struct cdrom_device_ops
*cdo
= cdi
->ops
;
3259 struct packet_command cgc
;
3262 /* set up command and get the disc info */
3263 init_cdrom_command(&cgc
, di
, sizeof(*di
), CGC_DATA_READ
);
3264 cgc
.cmd
[0] = GPCMD_READ_DISC_INFO
;
3265 cgc
.cmd
[8] = cgc
.buflen
= 2;
3268 if ((ret
= cdo
->generic_packet(cdi
, &cgc
)))
3271 /* not all drives have the same disc_info length, so requeue
3272 * packet with the length the drive tells us it can supply
3274 buflen
= be16_to_cpu(di
->disc_information_length
) +
3275 sizeof(di
->disc_information_length
);
3277 if (buflen
> sizeof(disc_information
))
3278 buflen
= sizeof(disc_information
);
3280 cgc
.cmd
[8] = cgc
.buflen
= buflen
;
3281 if ((ret
= cdo
->generic_packet(cdi
, &cgc
)))
3284 /* return actual fill size */
3288 /* return the last written block on the CD-R media. this is for the udf
3290 int cdrom_get_last_written(struct cdrom_device_info
*cdi
, long *last_written
)
3292 struct cdrom_tocentry toc
;
3293 disc_information di
;
3294 track_information ti
;
3296 int ret
= -1, ti_size
;
3298 if (!CDROM_CAN(CDC_GENERIC_PACKET
))
3301 ret
= cdrom_get_disc_info(cdi
, &di
);
3302 if (ret
< (int)(offsetof(typeof(di
), last_track_lsb
)
3303 + sizeof(di
.last_track_lsb
)))
3306 /* if unit didn't return msb, it's zeroed by cdrom_get_disc_info */
3307 last_track
= (di
.last_track_msb
<< 8) | di
.last_track_lsb
;
3308 ti_size
= cdrom_get_track_info(cdi
, last_track
, 1, &ti
);
3309 if (ti_size
< (int)offsetof(typeof(ti
), track_start
))
3312 /* if this track is blank, try the previous. */
3317 ti_size
= cdrom_get_track_info(cdi
, last_track
, 1, &ti
);
3320 if (ti_size
< (int)(offsetof(typeof(ti
), track_size
)
3321 + sizeof(ti
.track_size
)))
3324 /* if last recorded field is valid, return it. */
3325 if (ti
.lra_v
&& ti_size
>= (int)(offsetof(typeof(ti
), last_rec_address
)
3326 + sizeof(ti
.last_rec_address
))) {
3327 *last_written
= be32_to_cpu(ti
.last_rec_address
);
3329 /* make it up instead */
3330 *last_written
= be32_to_cpu(ti
.track_start
) +
3331 be32_to_cpu(ti
.track_size
);
3333 *last_written
-= (be32_to_cpu(ti
.free_blocks
) + 7);
3337 /* this is where we end up if the drive either can't do a
3338 GPCMD_READ_DISC_INFO or GPCMD_READ_TRACK_RZONE_INFO or if
3339 it doesn't give enough information or fails. then we return
3340 the toc contents. */
3342 toc
.cdte_format
= CDROM_MSF
;
3343 toc
.cdte_track
= CDROM_LEADOUT
;
3344 if ((ret
= cdi
->ops
->audio_ioctl(cdi
, CDROMREADTOCENTRY
, &toc
)))
3346 sanitize_format(&toc
.cdte_addr
, &toc
.cdte_format
, CDROM_LBA
);
3347 *last_written
= toc
.cdte_addr
.lba
;
3351 /* return the next writable block. also for udf file system. */
3352 static int cdrom_get_next_writable(struct cdrom_device_info
*cdi
, long *next_writable
)
3354 disc_information di
;
3355 track_information ti
;
3359 if (!CDROM_CAN(CDC_GENERIC_PACKET
))
3360 goto use_last_written
;
3362 ret
= cdrom_get_disc_info(cdi
, &di
);
3363 if (ret
< 0 || ret
< offsetof(typeof(di
), last_track_lsb
)
3364 + sizeof(di
.last_track_lsb
))
3365 goto use_last_written
;
3367 /* if unit didn't return msb, it's zeroed by cdrom_get_disc_info */
3368 last_track
= (di
.last_track_msb
<< 8) | di
.last_track_lsb
;
3369 ti_size
= cdrom_get_track_info(cdi
, last_track
, 1, &ti
);
3370 if (ti_size
< 0 || ti_size
< offsetof(typeof(ti
), track_start
))
3371 goto use_last_written
;
3373 /* if this track is blank, try the previous. */
3375 if (last_track
== 1)
3376 goto use_last_written
;
3378 ti_size
= cdrom_get_track_info(cdi
, last_track
, 1, &ti
);
3380 goto use_last_written
;
3383 /* if next recordable address field is valid, use it. */
3384 if (ti
.nwa_v
&& ti_size
>= offsetof(typeof(ti
), next_writable
)
3385 + sizeof(ti
.next_writable
)) {
3386 *next_writable
= be32_to_cpu(ti
.next_writable
);
3391 if ((ret
= cdrom_get_last_written(cdi
, next_writable
))) {
3395 *next_writable
+= 7;
3400 EXPORT_SYMBOL(cdrom_get_last_written
);
3401 EXPORT_SYMBOL(register_cdrom
);
3402 EXPORT_SYMBOL(unregister_cdrom
);
3403 EXPORT_SYMBOL(cdrom_open
);
3404 EXPORT_SYMBOL(cdrom_release
);
3405 EXPORT_SYMBOL(cdrom_ioctl
);
3406 EXPORT_SYMBOL(cdrom_media_changed
);
3407 EXPORT_SYMBOL(cdrom_number_of_slots
);
3408 EXPORT_SYMBOL(cdrom_mode_select
);
3409 EXPORT_SYMBOL(cdrom_mode_sense
);
3410 EXPORT_SYMBOL(init_cdrom_command
);
3411 EXPORT_SYMBOL(cdrom_get_media_event
);
3413 #ifdef CONFIG_SYSCTL
3415 #define CDROM_STR_SIZE 1000
3417 static struct cdrom_sysctl_settings
{
3418 char info
[CDROM_STR_SIZE
]; /* general info */
3419 int autoclose
; /* close tray upon mount, etc */
3420 int autoeject
; /* eject on umount */
3421 int debug
; /* turn on debugging messages */
3422 int lock
; /* lock the door on device open */
3423 int check
; /* check media type */
3424 } cdrom_sysctl_settings
;
3426 enum cdrom_print_option
{
3433 static int cdrom_print_info(const char *header
, int val
, char *info
,
3434 int *pos
, enum cdrom_print_option option
)
3436 const int max_size
= sizeof(cdrom_sysctl_settings
.info
);
3437 struct cdrom_device_info
*cdi
;
3440 ret
= scnprintf(info
+ *pos
, max_size
- *pos
, header
);
3446 list_for_each_entry(cdi
, &cdrom_list
, list
) {
3449 ret
= scnprintf(info
+ *pos
, max_size
- *pos
,
3453 ret
= scnprintf(info
+ *pos
, max_size
- *pos
,
3454 "\t%d", cdi
->speed
);
3457 ret
= scnprintf(info
+ *pos
, max_size
- *pos
,
3458 "\t%d", cdi
->capacity
);
3460 case CTL_CAPABILITY
:
3461 ret
= scnprintf(info
+ *pos
, max_size
- *pos
,
3462 "\t%d", CDROM_CAN(val
) != 0);
3465 pr_info("invalid option%d\n", option
);
3476 static int cdrom_sysctl_info(ctl_table
*ctl
, int write
,
3477 void __user
*buffer
, size_t *lenp
, loff_t
*ppos
)
3480 char *info
= cdrom_sysctl_settings
.info
;
3481 const int max_size
= sizeof(cdrom_sysctl_settings
.info
);
3483 if (!*lenp
|| (*ppos
&& !write
)) {
3488 mutex_lock(&cdrom_mutex
);
3490 pos
= sprintf(info
, "CD-ROM information, " VERSION
"\n");
3492 if (cdrom_print_info("\ndrive name:\t", 0, info
, &pos
, CTL_NAME
))
3494 if (cdrom_print_info("\ndrive speed:\t", 0, info
, &pos
, CTL_SPEED
))
3496 if (cdrom_print_info("\ndrive # of slots:", 0, info
, &pos
, CTL_SLOTS
))
3498 if (cdrom_print_info("\nCan close tray:\t",
3499 CDC_CLOSE_TRAY
, info
, &pos
, CTL_CAPABILITY
))
3501 if (cdrom_print_info("\nCan open tray:\t",
3502 CDC_OPEN_TRAY
, info
, &pos
, CTL_CAPABILITY
))
3504 if (cdrom_print_info("\nCan lock tray:\t",
3505 CDC_LOCK
, info
, &pos
, CTL_CAPABILITY
))
3507 if (cdrom_print_info("\nCan change speed:",
3508 CDC_SELECT_SPEED
, info
, &pos
, CTL_CAPABILITY
))
3510 if (cdrom_print_info("\nCan select disk:",
3511 CDC_SELECT_DISC
, info
, &pos
, CTL_CAPABILITY
))
3513 if (cdrom_print_info("\nCan read multisession:",
3514 CDC_MULTI_SESSION
, info
, &pos
, CTL_CAPABILITY
))
3516 if (cdrom_print_info("\nCan read MCN:\t",
3517 CDC_MCN
, info
, &pos
, CTL_CAPABILITY
))
3519 if (cdrom_print_info("\nReports media changed:",
3520 CDC_MEDIA_CHANGED
, info
, &pos
, CTL_CAPABILITY
))
3522 if (cdrom_print_info("\nCan play audio:\t",
3523 CDC_PLAY_AUDIO
, info
, &pos
, CTL_CAPABILITY
))
3525 if (cdrom_print_info("\nCan write CD-R:\t",
3526 CDC_CD_R
, info
, &pos
, CTL_CAPABILITY
))
3528 if (cdrom_print_info("\nCan write CD-RW:",
3529 CDC_CD_RW
, info
, &pos
, CTL_CAPABILITY
))
3531 if (cdrom_print_info("\nCan read DVD:\t",
3532 CDC_DVD
, info
, &pos
, CTL_CAPABILITY
))
3534 if (cdrom_print_info("\nCan write DVD-R:",
3535 CDC_DVD_R
, info
, &pos
, CTL_CAPABILITY
))
3537 if (cdrom_print_info("\nCan write DVD-RAM:",
3538 CDC_DVD_RAM
, info
, &pos
, CTL_CAPABILITY
))
3540 if (cdrom_print_info("\nCan read MRW:\t",
3541 CDC_MRW
, info
, &pos
, CTL_CAPABILITY
))
3543 if (cdrom_print_info("\nCan write MRW:\t",
3544 CDC_MRW_W
, info
, &pos
, CTL_CAPABILITY
))
3546 if (cdrom_print_info("\nCan write RAM:\t",
3547 CDC_RAM
, info
, &pos
, CTL_CAPABILITY
))
3549 if (!scnprintf(info
+ pos
, max_size
- pos
, "\n\n"))
3552 mutex_unlock(&cdrom_mutex
);
3553 return proc_dostring(ctl
, write
, buffer
, lenp
, ppos
);
3555 pr_info("info buffer too small\n");
3559 /* Unfortunately, per device settings are not implemented through
3560 procfs/sysctl yet. When they are, this will naturally disappear. For now
3561 just update all drives. Later this will become the template on which
3562 new registered drives will be based. */
3563 static void cdrom_update_settings(void)
3565 struct cdrom_device_info
*cdi
;
3567 mutex_lock(&cdrom_mutex
);
3568 list_for_each_entry(cdi
, &cdrom_list
, list
) {
3569 if (autoclose
&& CDROM_CAN(CDC_CLOSE_TRAY
))
3570 cdi
->options
|= CDO_AUTO_CLOSE
;
3571 else if (!autoclose
)
3572 cdi
->options
&= ~CDO_AUTO_CLOSE
;
3573 if (autoeject
&& CDROM_CAN(CDC_OPEN_TRAY
))
3574 cdi
->options
|= CDO_AUTO_EJECT
;
3575 else if (!autoeject
)
3576 cdi
->options
&= ~CDO_AUTO_EJECT
;
3577 if (lockdoor
&& CDROM_CAN(CDC_LOCK
))
3578 cdi
->options
|= CDO_LOCK
;
3580 cdi
->options
&= ~CDO_LOCK
;
3581 if (check_media_type
)
3582 cdi
->options
|= CDO_CHECK_TYPE
;
3584 cdi
->options
&= ~CDO_CHECK_TYPE
;
3586 mutex_unlock(&cdrom_mutex
);
3589 static int cdrom_sysctl_handler(ctl_table
*ctl
, int write
,
3590 void __user
*buffer
, size_t *lenp
, loff_t
*ppos
)
3594 ret
= proc_dointvec(ctl
, write
, buffer
, lenp
, ppos
);
3598 /* we only care for 1 or 0. */
3599 autoclose
= !!cdrom_sysctl_settings
.autoclose
;
3600 autoeject
= !!cdrom_sysctl_settings
.autoeject
;
3601 debug
= !!cdrom_sysctl_settings
.debug
;
3602 lockdoor
= !!cdrom_sysctl_settings
.lock
;
3603 check_media_type
= !!cdrom_sysctl_settings
.check
;
3605 /* update the option flags according to the changes. we
3606 don't have per device options through sysctl yet,
3607 but we will have and then this will disappear. */
3608 cdrom_update_settings();
3614 /* Place files in /proc/sys/dev/cdrom */
3615 static ctl_table cdrom_table
[] = {
3618 .data
= &cdrom_sysctl_settings
.info
,
3619 .maxlen
= CDROM_STR_SIZE
,
3621 .proc_handler
= cdrom_sysctl_info
,
3624 .procname
= "autoclose",
3625 .data
= &cdrom_sysctl_settings
.autoclose
,
3626 .maxlen
= sizeof(int),
3628 .proc_handler
= cdrom_sysctl_handler
,
3631 .procname
= "autoeject",
3632 .data
= &cdrom_sysctl_settings
.autoeject
,
3633 .maxlen
= sizeof(int),
3635 .proc_handler
= cdrom_sysctl_handler
,
3638 .procname
= "debug",
3639 .data
= &cdrom_sysctl_settings
.debug
,
3640 .maxlen
= sizeof(int),
3642 .proc_handler
= cdrom_sysctl_handler
,
3646 .data
= &cdrom_sysctl_settings
.lock
,
3647 .maxlen
= sizeof(int),
3649 .proc_handler
= cdrom_sysctl_handler
,
3652 .procname
= "check_media",
3653 .data
= &cdrom_sysctl_settings
.check
,
3654 .maxlen
= sizeof(int),
3656 .proc_handler
= cdrom_sysctl_handler
3661 static ctl_table cdrom_cdrom_table
[] = {
3663 .procname
= "cdrom",
3666 .child
= cdrom_table
,
3671 /* Make sure that /proc/sys/dev is there */
3672 static ctl_table cdrom_root_table
[] = {
3677 .child
= cdrom_cdrom_table
,
3681 static struct ctl_table_header
*cdrom_sysctl_header
;
3683 static void cdrom_sysctl_register(void)
3685 static int initialized
;
3687 if (initialized
== 1)
3690 cdrom_sysctl_header
= register_sysctl_table(cdrom_root_table
);
3692 /* set the defaults */
3693 cdrom_sysctl_settings
.autoclose
= autoclose
;
3694 cdrom_sysctl_settings
.autoeject
= autoeject
;
3695 cdrom_sysctl_settings
.debug
= debug
;
3696 cdrom_sysctl_settings
.lock
= lockdoor
;
3697 cdrom_sysctl_settings
.check
= check_media_type
;
3702 static void cdrom_sysctl_unregister(void)
3704 if (cdrom_sysctl_header
)
3705 unregister_sysctl_table(cdrom_sysctl_header
);
3708 #else /* CONFIG_SYSCTL */
3710 static void cdrom_sysctl_register(void)
3714 static void cdrom_sysctl_unregister(void)
3718 #endif /* CONFIG_SYSCTL */
3720 static int __init
cdrom_init(void)
3722 cdrom_sysctl_register();
3727 static void __exit
cdrom_exit(void)
3729 pr_info("Uniform CD-ROM driver unloaded\n");
3730 cdrom_sysctl_unregister();
3733 module_init(cdrom_init
);
3734 module_exit(cdrom_exit
);
3735 MODULE_LICENSE("GPL");