Commit | Line | Data |
---|---|---|
f30c2269 | 1 | /* linux/drivers/cdrom/cdrom.c |
1da177e4 LT |
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> | |
5 | ||
6 | May be copied or modified under the terms of the GNU General Public | |
7 | License. See linux/COPYING for more information. | |
8 | ||
9 | Uniform CD-ROM driver for Linux. | |
10 | See Documentation/cdrom/cdrom-standard.tex for usage information. | |
11 | ||
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. ;-) | |
16 | ||
17 | To Do List: | |
18 | ---------------------------------- | |
19 | ||
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! | |
24 | ||
25 | ||
26 | Revision History | |
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? | |
31 | ||
32 | 2.00 Dec 2, 1997 -- Erik Andersen <andersee@debian.org> | |
33 | -- New maintainer! As David A. van Leeuwen has been too busy to activly | |
34 | maintain and improve this driver, I am now carrying on the torch. If | |
35 | you have a problem with this driver, please feel free to contact me. | |
36 | ||
37 | -- Added (rudimentary) sysctl interface. I realize this is really weak | |
38 | right now, and is _very_ badly implemented. It will be improved... | |
39 | ||
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. | |
45 | ||
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. | |
49 | ||
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 | |
52 | problem). | |
53 | ||
54 | -- Made it so if a function isn't implemented in a low-level driver, | |
55 | ENOSYS is now returned instead of EINVAL. | |
56 | ||
57 | -- Simplified some complex logic so that the source code is easier to read. | |
58 | ||
59 | -- Other stuff I probably forgot to mention (lots of changes). | |
60 | ||
61 | 2.01 to 2.11 Dec 1997-Jan 1998 | |
62 | -- TO-DO! Write changelogs for 2.01 to 2.12. | |
63 | ||
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. | |
69 | ||
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. | |
78 | ||
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. | |
84 | ||
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 | |
89 | ||
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. | |
94 | ||
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 | |
102 | that bug. | |
103 | ||
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 | |
107 | should be... | |
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. | |
113 | ||
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>. | |
117 | ||
118 | 2.55 Apr 25, 1999 - Jens Axboe <axboe@image.dk> | |
119 | -- autoclose was mistakenly checked against CDC_OPEN_TRAY instead of | |
120 | CDC_CLOSE_TRAY. | |
121 | -- proc info didn't mask against capabilities mask. | |
122 | ||
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, | |
134 | and lock. | |
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. | |
140 | ||
141 | 3.01 Aug 6, 1999 - Jens Axboe <axboe@image.dk> | |
142 | -- Fix up the sysctl handling so that the option flags get set | |
143 | correctly. | |
144 | -- Fix up ioctl handling so the device specific ones actually get | |
145 | called :). | |
146 | ||
147 | 3.02 Aug 8, 1999 - Jens Axboe <axboe@image.dk> | |
148 | -- Fixed volume control on SCSI drives (or others with longer audio | |
149 | page). | |
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. | |
155 | ||
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. | |
166 | ||
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. | |
180 | ||
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 | |
185 | dvd_read_manufact. | |
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. | |
189 | ||
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. | |
193 | ||
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 | |
199 | home now. | |
200 | -- Clear header length in mode_select unconditionally. | |
201 | -- Removed the register_disk() that was added, not needed here. | |
202 | ||
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. | |
213 | ||
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 | |
217 | back. | |
218 | ||
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. | |
223 | ||
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 | |
227 | ||
228 | 3.12 Oct 18, 2000 - Jens Axboe <axboe@suse.de> | |
229 | -- Use quiet bit on packet commands not known to work | |
230 | ||
231 | 3.20 Dec 17, 2003 - Jens Axboe <axboe@suse.de> | |
232 | -- Various fixes and lots of cleanups not listed :-) | |
233 | -- Locking fixes | |
234 | -- Mt Rainier support | |
235 | -- DVD-RAM write open fixes | |
236 | ||
237 | Nov 5 2001, Aug 8 2002. Modified by Andy Polyakov | |
238 | <appro@fy.chalmers.se> to support MMC-3 compliant DVD+RW units. | |
239 | ||
240 | Modified by Nigel Kukard <nkukard@lbsd.net> - support DVD+RW | |
241 | 2.4.x patch by Andy Polyakov <appro@fy.chalmers.se> | |
242 | ||
243 | -------------------------------------------------------------------------*/ | |
244 | ||
e597cd09 JP |
245 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
246 | ||
1da177e4 LT |
247 | #define REVISION "Revision: 3.20" |
248 | #define VERSION "Id: cdrom.c 3.20 2003/12/17" | |
249 | ||
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 | |
256 | #define CD_OPEN 0x8 | |
257 | #define CD_CLOSE 0x10 | |
258 | #define CD_COUNT_TRACKS 0x20 | |
259 | #define CD_CHANGER 0x40 | |
260 | #define CD_DVD 0x80 | |
261 | ||
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) */ | |
267 | ||
1da177e4 LT |
268 | #include <linux/module.h> |
269 | #include <linux/fs.h> | |
270 | #include <linux/buffer_head.h> | |
271 | #include <linux/major.h> | |
272 | #include <linux/types.h> | |
273 | #include <linux/errno.h> | |
274 | #include <linux/kernel.h> | |
275 | #include <linux/mm.h> | |
276 | #include <linux/slab.h> | |
277 | #include <linux/cdrom.h> | |
278 | #include <linux/sysctl.h> | |
279 | #include <linux/proc_fs.h> | |
280 | #include <linux/blkpg.h> | |
281 | #include <linux/init.h> | |
282 | #include <linux/fcntl.h> | |
283 | #include <linux/blkdev.h> | |
284 | #include <linux/times.h> | |
285 | ||
286 | #include <asm/uaccess.h> | |
287 | ||
288 | /* used to tell the module to turn on full debugging messages */ | |
289 | static int debug; | |
290 | /* used to keep tray locked at all times */ | |
291 | static int keeplocked; | |
292 | /* default compatibility mode */ | |
293 | static int autoclose=1; | |
294 | static int autoeject; | |
295 | static int lockdoor = 1; | |
296 | /* will we ever get to use this... sigh. */ | |
297 | static int check_media_type; | |
298 | /* automatically restart mrw format */ | |
299 | static int mrw_format_restart = 1; | |
300 | module_param(debug, bool, 0); | |
301 | module_param(autoclose, bool, 0); | |
302 | module_param(autoeject, bool, 0); | |
303 | module_param(lockdoor, bool, 0); | |
304 | module_param(check_media_type, bool, 0); | |
305 | module_param(mrw_format_restart, bool, 0); | |
306 | ||
554988d6 | 307 | static DEFINE_MUTEX(cdrom_mutex); |
1da177e4 LT |
308 | |
309 | static const char *mrw_format_status[] = { | |
310 | "not mrw", | |
311 | "bgformat inactive", | |
312 | "bgformat active", | |
313 | "mrw complete", | |
314 | }; | |
315 | ||
316 | static const char *mrw_address_space[] = { "DMA", "GAA" }; | |
317 | ||
318 | #if (ERRLOGMASK!=CD_NOTHING) | |
e597cd09 JP |
319 | #define cdinfo(type, fmt, args...) \ |
320 | do { \ | |
321 | if ((ERRLOGMASK & type) || debug == 1) \ | |
322 | pr_info(fmt, ##args); \ | |
323 | } while (0) | |
1da177e4 | 324 | #else |
e597cd09 JP |
325 | #define cdinfo(type, fmt, args...) \ |
326 | do { \ | |
327 | if (0 && (ERRLOGMASK & type) || debug == 1) \ | |
328 | pr_info(fmt, ##args); \ | |
329 | } while (0) | |
1da177e4 LT |
330 | #endif |
331 | ||
332 | /* These are used to simplify getting data in from and back to user land */ | |
333 | #define IOCTL_IN(arg, type, in) \ | |
334 | if (copy_from_user(&(in), (type __user *) (arg), sizeof (in))) \ | |
335 | return -EFAULT; | |
336 | ||
337 | #define IOCTL_OUT(arg, type, out) \ | |
338 | if (copy_to_user((type __user *) (arg), &(out), sizeof (out))) \ | |
339 | return -EFAULT; | |
340 | ||
341 | /* The (cdo->capability & ~cdi->mask & CDC_XXX) construct was used in | |
342 | a lot of places. This macro makes the code more clear. */ | |
343 | #define CDROM_CAN(type) (cdi->ops->capability & ~cdi->mask & (type)) | |
344 | ||
345 | /* used in the audio ioctls */ | |
346 | #define CHECKAUDIO if ((ret=check_for_audio_disc(cdi, cdo))) return ret | |
347 | ||
2e11c207 JA |
348 | /* |
349 | * Another popular OS uses 7 seconds as the hard timeout for default | |
350 | * commands, so it is a good choice for us as well. | |
351 | */ | |
352 | #define CDROM_DEF_TIMEOUT (7 * HZ) | |
353 | ||
1da177e4 LT |
354 | /* Not-exported routines. */ |
355 | static int open_for_data(struct cdrom_device_info * cdi); | |
356 | static int check_for_audio_disc(struct cdrom_device_info * cdi, | |
357 | struct cdrom_device_ops * cdo); | |
358 | static void sanitize_format(union cdrom_addr *addr, | |
359 | u_char * curr, u_char requested); | |
360 | static int mmc_ioctl(struct cdrom_device_info *cdi, unsigned int cmd, | |
361 | unsigned long arg); | |
362 | ||
363 | int cdrom_get_last_written(struct cdrom_device_info *, long *); | |
364 | static int cdrom_get_next_writable(struct cdrom_device_info *, long *); | |
365 | static void cdrom_count_tracks(struct cdrom_device_info *, tracktype*); | |
366 | ||
367 | static int cdrom_mrw_exit(struct cdrom_device_info *cdi); | |
368 | ||
369 | static int cdrom_get_disc_info(struct cdrom_device_info *cdi, disc_information *di); | |
370 | ||
1da177e4 | 371 | static void cdrom_sysctl_register(void); |
17672cf0 | 372 | |
7fd097d4 | 373 | static LIST_HEAD(cdrom_list); |
1da177e4 LT |
374 | |
375 | static int cdrom_dummy_generic_packet(struct cdrom_device_info *cdi, | |
376 | struct packet_command *cgc) | |
377 | { | |
378 | if (cgc->sense) { | |
379 | cgc->sense->sense_key = 0x05; | |
380 | cgc->sense->asc = 0x20; | |
381 | cgc->sense->ascq = 0x00; | |
382 | } | |
383 | ||
384 | cgc->stat = -EIO; | |
385 | return -EIO; | |
386 | } | |
387 | ||
388 | /* This macro makes sure we don't have to check on cdrom_device_ops | |
389 | * existence in the run-time routines below. Change_capability is a | |
390 | * hack to have the capability flags defined const, while we can still | |
391 | * change it here without gcc complaining at every line. | |
392 | */ | |
393 | #define ENSURE(call, bits) if (cdo->call == NULL) *change_capability &= ~(bits) | |
394 | ||
395 | int register_cdrom(struct cdrom_device_info *cdi) | |
396 | { | |
397 | static char banner_printed; | |
398 | struct cdrom_device_ops *cdo = cdi->ops; | |
399 | int *change_capability = (int *)&cdo->capability; /* hack */ | |
400 | ||
401 | cdinfo(CD_OPEN, "entering register_cdrom\n"); | |
402 | ||
403 | if (cdo->open == NULL || cdo->release == NULL) | |
3c3f4e01 | 404 | return -EINVAL; |
1da177e4 | 405 | if (!banner_printed) { |
e597cd09 | 406 | pr_info("Uniform CD-ROM driver " REVISION "\n"); |
1da177e4 | 407 | banner_printed = 1; |
1da177e4 | 408 | cdrom_sysctl_register(); |
1da177e4 LT |
409 | } |
410 | ||
411 | ENSURE(drive_status, CDC_DRIVE_STATUS ); | |
412 | ENSURE(media_changed, CDC_MEDIA_CHANGED); | |
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); | |
1da177e4 LT |
419 | ENSURE(generic_packet, CDC_GENERIC_PACKET); |
420 | cdi->mc_flags = 0; | |
421 | cdo->n_minors = 0; | |
422 | cdi->options = CDO_USE_FFLAGS; | |
423 | ||
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; | |
428 | if (lockdoor==1) | |
429 | cdi->options |= (int) CDO_LOCK; | |
430 | if (check_media_type==1) | |
431 | cdi->options |= (int) CDO_CHECK_TYPE; | |
432 | ||
433 | if (CDROM_CAN(CDC_MRW_W)) | |
434 | cdi->exit = cdrom_mrw_exit; | |
435 | ||
436 | if (cdi->disk) | |
437 | cdi->cdda_method = CDDA_BPC_FULL; | |
438 | else | |
439 | cdi->cdda_method = CDDA_OLD; | |
440 | ||
441 | if (!cdo->generic_packet) | |
442 | cdo->generic_packet = cdrom_dummy_generic_packet; | |
443 | ||
444 | cdinfo(CD_REG_UNREG, "drive \"/dev/%s\" registered\n", cdi->name); | |
554988d6 | 445 | mutex_lock(&cdrom_mutex); |
7fd097d4 | 446 | list_add(&cdi->list, &cdrom_list); |
554988d6 | 447 | mutex_unlock(&cdrom_mutex); |
1da177e4 LT |
448 | return 0; |
449 | } | |
450 | #undef ENSURE | |
451 | ||
0a0c4114 | 452 | void unregister_cdrom(struct cdrom_device_info *cdi) |
1da177e4 | 453 | { |
1da177e4 LT |
454 | cdinfo(CD_OPEN, "entering unregister_cdrom\n"); |
455 | ||
554988d6 | 456 | mutex_lock(&cdrom_mutex); |
7fd097d4 | 457 | list_del(&cdi->list); |
554988d6 | 458 | mutex_unlock(&cdrom_mutex); |
1da177e4 LT |
459 | |
460 | if (cdi->exit) | |
461 | cdi->exit(cdi); | |
462 | ||
463 | cdi->ops->n_minors--; | |
464 | cdinfo(CD_REG_UNREG, "drive \"/dev/%s\" unregistered\n", cdi->name); | |
1da177e4 LT |
465 | } |
466 | ||
467 | int cdrom_get_media_event(struct cdrom_device_info *cdi, | |
468 | struct media_event_desc *med) | |
469 | { | |
470 | struct packet_command cgc; | |
fce53847 FT |
471 | unsigned char buffer[8]; |
472 | struct event_header *eh = (struct event_header *) buffer; | |
1da177e4 | 473 | |
fce53847 | 474 | init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_READ); |
1da177e4 LT |
475 | cgc.cmd[0] = GPCMD_GET_EVENT_STATUS_NOTIFICATION; |
476 | cgc.cmd[1] = 1; /* IMMED */ | |
477 | cgc.cmd[4] = 1 << 4; /* media event */ | |
fce53847 | 478 | cgc.cmd[8] = sizeof(buffer); |
1da177e4 LT |
479 | cgc.quiet = 1; |
480 | ||
481 | if (cdi->ops->generic_packet(cdi, &cgc)) | |
fce53847 | 482 | return 1; |
1da177e4 LT |
483 | |
484 | if (be16_to_cpu(eh->data_len) < sizeof(*med)) | |
fce53847 | 485 | return 1; |
1da177e4 LT |
486 | |
487 | if (eh->nea || eh->notification_class != 0x4) | |
fce53847 | 488 | return 1; |
1da177e4 | 489 | |
fce53847 FT |
490 | memcpy(med, &buffer[sizeof(*eh)], sizeof(*med)); |
491 | return 0; | |
1da177e4 LT |
492 | } |
493 | ||
494 | /* | |
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 | |
497 | */ | |
498 | static int cdrom_mrw_probe_pc(struct cdrom_device_info *cdi) | |
499 | { | |
500 | struct packet_command cgc; | |
fce53847 | 501 | char buffer[16]; |
1da177e4 | 502 | |
fce53847 | 503 | init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_READ); |
1da177e4 LT |
504 | |
505 | cgc.timeout = HZ; | |
506 | cgc.quiet = 1; | |
507 | ||
508 | if (!cdrom_mode_sense(cdi, &cgc, MRW_MODE_PC, 0)) { | |
509 | cdi->mrw_mode_page = MRW_MODE_PC; | |
fce53847 | 510 | return 0; |
1da177e4 LT |
511 | } else if (!cdrom_mode_sense(cdi, &cgc, MRW_MODE_PC_PRE1, 0)) { |
512 | cdi->mrw_mode_page = MRW_MODE_PC_PRE1; | |
fce53847 | 513 | return 0; |
1da177e4 | 514 | } |
fce53847 FT |
515 | |
516 | return 1; | |
1da177e4 LT |
517 | } |
518 | ||
519 | static int cdrom_is_mrw(struct cdrom_device_info *cdi, int *write) | |
520 | { | |
521 | struct packet_command cgc; | |
522 | struct mrw_feature_desc *mfd; | |
fce53847 | 523 | unsigned char buffer[16]; |
1da177e4 LT |
524 | int ret; |
525 | ||
526 | *write = 0; | |
527 | ||
fce53847 | 528 | init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_READ); |
1da177e4 LT |
529 | |
530 | cgc.cmd[0] = GPCMD_GET_CONFIGURATION; | |
531 | cgc.cmd[3] = CDF_MRW; | |
fce53847 | 532 | cgc.cmd[8] = sizeof(buffer); |
1da177e4 LT |
533 | cgc.quiet = 1; |
534 | ||
535 | if ((ret = cdi->ops->generic_packet(cdi, &cgc))) | |
fce53847 | 536 | return ret; |
1da177e4 LT |
537 | |
538 | mfd = (struct mrw_feature_desc *)&buffer[sizeof(struct feature_header)]; | |
fce53847 FT |
539 | if (be16_to_cpu(mfd->feature_code) != CDF_MRW) |
540 | return 1; | |
1da177e4 LT |
541 | *write = mfd->write; |
542 | ||
543 | if ((ret = cdrom_mrw_probe_pc(cdi))) { | |
544 | *write = 0; | |
fce53847 | 545 | return ret; |
1da177e4 | 546 | } |
fce53847 FT |
547 | |
548 | return 0; | |
1da177e4 LT |
549 | } |
550 | ||
551 | static int cdrom_mrw_bgformat(struct cdrom_device_info *cdi, int cont) | |
552 | { | |
553 | struct packet_command cgc; | |
fce53847 | 554 | unsigned char buffer[12]; |
1da177e4 LT |
555 | int ret; |
556 | ||
e597cd09 | 557 | pr_info("%sstarting format\n", cont ? "Re" : ""); |
1da177e4 LT |
558 | |
559 | /* | |
560 | * FmtData bit set (bit 4), format type is 1 | |
561 | */ | |
fce53847 | 562 | init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_WRITE); |
1da177e4 LT |
563 | cgc.cmd[0] = GPCMD_FORMAT_UNIT; |
564 | cgc.cmd[1] = (1 << 4) | 1; | |
565 | ||
566 | cgc.timeout = 5 * 60 * HZ; | |
567 | ||
568 | /* | |
569 | * 4 byte format list header, 8 byte format list descriptor | |
570 | */ | |
571 | buffer[1] = 1 << 1; | |
572 | buffer[3] = 8; | |
573 | ||
574 | /* | |
575 | * nr_blocks field | |
576 | */ | |
577 | buffer[4] = 0xff; | |
578 | buffer[5] = 0xff; | |
579 | buffer[6] = 0xff; | |
580 | buffer[7] = 0xff; | |
581 | ||
582 | buffer[8] = 0x24 << 2; | |
583 | buffer[11] = cont; | |
584 | ||
585 | ret = cdi->ops->generic_packet(cdi, &cgc); | |
586 | if (ret) | |
e597cd09 | 587 | pr_info("bgformat failed\n"); |
1da177e4 LT |
588 | |
589 | return ret; | |
590 | } | |
591 | ||
592 | static int cdrom_mrw_bgformat_susp(struct cdrom_device_info *cdi, int immed) | |
593 | { | |
594 | struct packet_command cgc; | |
595 | ||
596 | init_cdrom_command(&cgc, NULL, 0, CGC_DATA_NONE); | |
597 | cgc.cmd[0] = GPCMD_CLOSE_TRACK; | |
598 | ||
599 | /* | |
600 | * Session = 1, Track = 0 | |
601 | */ | |
602 | cgc.cmd[1] = !!immed; | |
603 | cgc.cmd[2] = 1 << 1; | |
604 | ||
605 | cgc.timeout = 5 * 60 * HZ; | |
606 | ||
607 | return cdi->ops->generic_packet(cdi, &cgc); | |
608 | } | |
609 | ||
610 | static int cdrom_flush_cache(struct cdrom_device_info *cdi) | |
611 | { | |
612 | struct packet_command cgc; | |
613 | ||
614 | init_cdrom_command(&cgc, NULL, 0, CGC_DATA_NONE); | |
615 | cgc.cmd[0] = GPCMD_FLUSH_CACHE; | |
616 | ||
617 | cgc.timeout = 5 * 60 * HZ; | |
618 | ||
619 | return cdi->ops->generic_packet(cdi, &cgc); | |
620 | } | |
621 | ||
622 | static int cdrom_mrw_exit(struct cdrom_device_info *cdi) | |
623 | { | |
624 | disc_information di; | |
625 | int ret; | |
626 | ||
627 | ret = cdrom_get_disc_info(cdi, &di); | |
628 | if (ret < 0 || ret < (int)offsetof(typeof(di),disc_type)) | |
629 | return 1; | |
630 | ||
631 | ret = 0; | |
632 | if (di.mrw_status == CDM_MRW_BGFORMAT_ACTIVE) { | |
e597cd09 | 633 | pr_info("issuing MRW background format suspend\n"); |
1da177e4 LT |
634 | ret = cdrom_mrw_bgformat_susp(cdi, 0); |
635 | } | |
636 | ||
7da21a02 | 637 | if (!ret && cdi->media_written) |
1da177e4 LT |
638 | ret = cdrom_flush_cache(cdi); |
639 | ||
640 | return ret; | |
641 | } | |
642 | ||
643 | static int cdrom_mrw_set_lba_space(struct cdrom_device_info *cdi, int space) | |
644 | { | |
645 | struct packet_command cgc; | |
646 | struct mode_page_header *mph; | |
fce53847 | 647 | char buffer[16]; |
1da177e4 LT |
648 | int ret, offset, size; |
649 | ||
fce53847 | 650 | init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_READ); |
1da177e4 | 651 | |
fce53847 FT |
652 | cgc.buffer = buffer; |
653 | cgc.buflen = sizeof(buffer); | |
1da177e4 LT |
654 | |
655 | if ((ret = cdrom_mode_sense(cdi, &cgc, cdi->mrw_mode_page, 0))) | |
fce53847 | 656 | return ret; |
1da177e4 LT |
657 | |
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; | |
661 | ||
662 | buffer[offset + 3] = space; | |
663 | cgc.buflen = size; | |
664 | ||
665 | if ((ret = cdrom_mode_select(cdi, &cgc))) | |
fce53847 | 666 | return ret; |
1da177e4 | 667 | |
e597cd09 JP |
668 | pr_info("%s: mrw address space %s selected\n", |
669 | cdi->name, mrw_address_space[space]); | |
fce53847 | 670 | return 0; |
1da177e4 LT |
671 | } |
672 | ||
673 | static int cdrom_get_random_writable(struct cdrom_device_info *cdi, | |
674 | struct rwrt_feature_desc *rfd) | |
675 | { | |
676 | struct packet_command cgc; | |
fce53847 | 677 | char buffer[24]; |
1da177e4 LT |
678 | int ret; |
679 | ||
fce53847 | 680 | init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_READ); |
1da177e4 LT |
681 | |
682 | cgc.cmd[0] = GPCMD_GET_CONFIGURATION; /* often 0x46 */ | |
683 | cgc.cmd[3] = CDF_RWRT; /* often 0x0020 */ | |
fce53847 | 684 | cgc.cmd[8] = sizeof(buffer); /* often 0x18 */ |
1da177e4 LT |
685 | cgc.quiet = 1; |
686 | ||
687 | if ((ret = cdi->ops->generic_packet(cdi, &cgc))) | |
fce53847 | 688 | return ret; |
1da177e4 LT |
689 | |
690 | memcpy(rfd, &buffer[sizeof(struct feature_header)], sizeof (*rfd)); | |
fce53847 | 691 | return 0; |
1da177e4 LT |
692 | } |
693 | ||
694 | static int cdrom_has_defect_mgt(struct cdrom_device_info *cdi) | |
695 | { | |
696 | struct packet_command cgc; | |
fce53847 | 697 | char buffer[16]; |
56052d52 | 698 | __be16 *feature_code; |
1da177e4 LT |
699 | int ret; |
700 | ||
fce53847 | 701 | init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_READ); |
1da177e4 LT |
702 | |
703 | cgc.cmd[0] = GPCMD_GET_CONFIGURATION; | |
704 | cgc.cmd[3] = CDF_HWDM; | |
fce53847 | 705 | cgc.cmd[8] = sizeof(buffer); |
1da177e4 LT |
706 | cgc.quiet = 1; |
707 | ||
708 | if ((ret = cdi->ops->generic_packet(cdi, &cgc))) | |
fce53847 | 709 | return ret; |
1da177e4 | 710 | |
56052d52 | 711 | feature_code = (__be16 *) &buffer[sizeof(struct feature_header)]; |
1da177e4 | 712 | if (be16_to_cpu(*feature_code) == CDF_HWDM) |
fce53847 FT |
713 | return 0; |
714 | ||
715 | return 1; | |
1da177e4 LT |
716 | } |
717 | ||
718 | ||
719 | static int cdrom_is_random_writable(struct cdrom_device_info *cdi, int *write) | |
720 | { | |
721 | struct rwrt_feature_desc rfd; | |
722 | int ret; | |
723 | ||
724 | *write = 0; | |
725 | ||
726 | if ((ret = cdrom_get_random_writable(cdi, &rfd))) | |
727 | return ret; | |
728 | ||
729 | if (CDF_RWRT == be16_to_cpu(rfd.feature_code)) | |
730 | *write = 1; | |
731 | ||
732 | return 0; | |
733 | } | |
734 | ||
735 | static int cdrom_media_erasable(struct cdrom_device_info *cdi) | |
736 | { | |
737 | disc_information di; | |
738 | int ret; | |
739 | ||
740 | ret = cdrom_get_disc_info(cdi, &di); | |
741 | if (ret < 0 || ret < offsetof(typeof(di), n_first_track)) | |
742 | return -1; | |
743 | ||
744 | return di.erasable; | |
745 | } | |
746 | ||
747 | /* | |
748 | * FIXME: check RO bit | |
749 | */ | |
750 | static int cdrom_dvdram_open_write(struct cdrom_device_info *cdi) | |
751 | { | |
752 | int ret = cdrom_media_erasable(cdi); | |
753 | ||
754 | /* | |
755 | * allow writable open if media info read worked and media is | |
756 | * erasable, _or_ if it fails since not all drives support it | |
757 | */ | |
758 | if (!ret) | |
759 | return 1; | |
760 | ||
761 | return 0; | |
762 | } | |
763 | ||
764 | static int cdrom_mrw_open_write(struct cdrom_device_info *cdi) | |
765 | { | |
766 | disc_information di; | |
767 | int ret; | |
768 | ||
769 | /* | |
770 | * always reset to DMA lba space on open | |
771 | */ | |
772 | if (cdrom_mrw_set_lba_space(cdi, MRW_LBA_DMA)) { | |
e597cd09 | 773 | pr_err("failed setting lba address space\n"); |
1da177e4 LT |
774 | return 1; |
775 | } | |
776 | ||
777 | ret = cdrom_get_disc_info(cdi, &di); | |
778 | if (ret < 0 || ret < offsetof(typeof(di),disc_type)) | |
779 | return 1; | |
780 | ||
781 | if (!di.erasable) | |
782 | return 1; | |
783 | ||
784 | /* | |
785 | * mrw_status | |
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 | |
790 | */ | |
791 | ret = 0; | |
e597cd09 | 792 | pr_info("open: mrw_status '%s'\n", mrw_format_status[di.mrw_status]); |
1da177e4 LT |
793 | if (!di.mrw_status) |
794 | ret = 1; | |
795 | else if (di.mrw_status == CDM_MRW_BGFORMAT_INACTIVE && | |
796 | mrw_format_restart) | |
797 | ret = cdrom_mrw_bgformat(cdi, 1); | |
798 | ||
799 | return ret; | |
800 | } | |
801 | ||
802 | static int mo_open_write(struct cdrom_device_info *cdi) | |
803 | { | |
804 | struct packet_command cgc; | |
fce53847 | 805 | char buffer[255]; |
1da177e4 LT |
806 | int ret; |
807 | ||
fce53847 | 808 | init_cdrom_command(&cgc, &buffer, 4, CGC_DATA_READ); |
1da177e4 LT |
809 | cgc.quiet = 1; |
810 | ||
811 | /* | |
812 | * obtain write protect information as per | |
813 | * drivers/scsi/sd.c:sd_read_write_protect_flag | |
814 | */ | |
815 | ||
816 | ret = cdrom_mode_sense(cdi, &cgc, GPMODE_ALL_PAGES, 0); | |
817 | if (ret) | |
818 | ret = cdrom_mode_sense(cdi, &cgc, GPMODE_VENDOR_PAGE, 0); | |
819 | if (ret) { | |
820 | cgc.buflen = 255; | |
821 | ret = cdrom_mode_sense(cdi, &cgc, GPMODE_ALL_PAGES, 0); | |
822 | } | |
823 | ||
824 | /* drive gave us no info, let the user go ahead */ | |
fce53847 FT |
825 | if (ret) |
826 | return 0; | |
1da177e4 | 827 | |
fce53847 | 828 | return buffer[3] & 0x80; |
1da177e4 LT |
829 | } |
830 | ||
831 | static int cdrom_ram_open_write(struct cdrom_device_info *cdi) | |
832 | { | |
833 | struct rwrt_feature_desc rfd; | |
834 | int ret; | |
835 | ||
836 | if ((ret = cdrom_has_defect_mgt(cdi))) | |
837 | return ret; | |
838 | ||
839 | if ((ret = cdrom_get_random_writable(cdi, &rfd))) | |
840 | return ret; | |
841 | else if (CDF_RWRT == be16_to_cpu(rfd.feature_code)) | |
842 | ret = !rfd.curr; | |
843 | ||
844 | cdinfo(CD_OPEN, "can open for random write\n"); | |
845 | return ret; | |
846 | } | |
847 | ||
848 | static void cdrom_mmc3_profile(struct cdrom_device_info *cdi) | |
849 | { | |
850 | struct packet_command cgc; | |
fce53847 | 851 | char buffer[32]; |
1da177e4 LT |
852 | int ret, mmc3_profile; |
853 | ||
fce53847 | 854 | init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_READ); |
1da177e4 LT |
855 | |
856 | cgc.cmd[0] = GPCMD_GET_CONFIGURATION; | |
857 | cgc.cmd[1] = 0; | |
858 | cgc.cmd[2] = cgc.cmd[3] = 0; /* Starting Feature Number */ | |
fce53847 | 859 | cgc.cmd[8] = sizeof(buffer); /* Allocation Length */ |
1da177e4 LT |
860 | cgc.quiet = 1; |
861 | ||
862 | if ((ret = cdi->ops->generic_packet(cdi, &cgc))) | |
863 | mmc3_profile = 0xffff; | |
864 | else | |
865 | mmc3_profile = (buffer[6] << 8) | buffer[7]; | |
866 | ||
867 | cdi->mmc3_profile = mmc3_profile; | |
868 | } | |
869 | ||
870 | static int cdrom_is_dvd_rw(struct cdrom_device_info *cdi) | |
871 | { | |
872 | switch (cdi->mmc3_profile) { | |
873 | case 0x12: /* DVD-RAM */ | |
874 | case 0x1A: /* DVD+RW */ | |
875 | return 0; | |
876 | default: | |
877 | return 1; | |
878 | } | |
879 | } | |
880 | ||
881 | /* | |
882 | * returns 0 for ok to open write, non-0 to disallow | |
883 | */ | |
884 | static int cdrom_open_write(struct cdrom_device_info *cdi) | |
885 | { | |
886 | int mrw, mrw_write, ram_write; | |
887 | int ret = 1; | |
888 | ||
889 | mrw = 0; | |
890 | if (!cdrom_is_mrw(cdi, &mrw_write)) | |
891 | mrw = 1; | |
892 | ||
893 | if (CDROM_CAN(CDC_MO_DRIVE)) | |
894 | ram_write = 1; | |
895 | else | |
896 | (void) cdrom_is_random_writable(cdi, &ram_write); | |
897 | ||
898 | if (mrw) | |
899 | cdi->mask &= ~CDC_MRW; | |
900 | else | |
901 | cdi->mask |= CDC_MRW; | |
902 | ||
903 | if (mrw_write) | |
904 | cdi->mask &= ~CDC_MRW_W; | |
905 | else | |
906 | cdi->mask |= CDC_MRW_W; | |
907 | ||
908 | if (ram_write) | |
909 | cdi->mask &= ~CDC_RAM; | |
910 | else | |
911 | cdi->mask |= CDC_RAM; | |
912 | ||
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)) | |
923 | ret = 0; | |
924 | ||
925 | return ret; | |
926 | } | |
927 | ||
928 | static void cdrom_dvd_rw_close_write(struct cdrom_device_info *cdi) | |
929 | { | |
930 | struct packet_command cgc; | |
931 | ||
932 | if (cdi->mmc3_profile != 0x1a) { | |
933 | cdinfo(CD_CLOSE, "%s: No DVD+RW\n", cdi->name); | |
934 | return; | |
935 | } | |
936 | ||
937 | if (!cdi->media_written) { | |
938 | cdinfo(CD_CLOSE, "%s: DVD+RW media clean\n", cdi->name); | |
939 | return; | |
940 | } | |
941 | ||
e597cd09 | 942 | pr_info("%s: dirty DVD+RW media, \"finalizing\"\n", cdi->name); |
1da177e4 LT |
943 | |
944 | init_cdrom_command(&cgc, NULL, 0, CGC_DATA_NONE); | |
945 | cgc.cmd[0] = GPCMD_FLUSH_CACHE; | |
946 | cgc.timeout = 30*HZ; | |
947 | cdi->ops->generic_packet(cdi, &cgc); | |
948 | ||
949 | init_cdrom_command(&cgc, NULL, 0, CGC_DATA_NONE); | |
950 | cgc.cmd[0] = GPCMD_CLOSE_TRACK; | |
951 | cgc.timeout = 3000*HZ; | |
952 | cgc.quiet = 1; | |
953 | cdi->ops->generic_packet(cdi, &cgc); | |
954 | ||
955 | init_cdrom_command(&cgc, NULL, 0, CGC_DATA_NONE); | |
956 | cgc.cmd[0] = GPCMD_CLOSE_TRACK; | |
957 | cgc.cmd[2] = 2; /* Close session */ | |
958 | cgc.quiet = 1; | |
959 | cgc.timeout = 3000*HZ; | |
960 | cdi->ops->generic_packet(cdi, &cgc); | |
961 | ||
962 | cdi->media_written = 0; | |
963 | } | |
964 | ||
965 | static int cdrom_close_write(struct cdrom_device_info *cdi) | |
966 | { | |
967 | #if 0 | |
968 | return cdrom_flush_cache(cdi); | |
969 | #else | |
970 | return 0; | |
971 | #endif | |
972 | } | |
973 | ||
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. | |
977 | * | |
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 | |
980 | * this way. | |
981 | */ | |
bbc1cc97 | 982 | int cdrom_open(struct cdrom_device_info *cdi, struct block_device *bdev, fmode_t mode) |
1da177e4 LT |
983 | { |
984 | int ret; | |
985 | ||
986 | cdinfo(CD_OPEN, "entering cdrom_open\n"); | |
987 | ||
988 | /* if this was a O_NONBLOCK open and we should honor the flags, | |
989 | * do a quick open without drive/disc integrity checks. */ | |
990 | cdi->use_count++; | |
bbc1cc97 | 991 | if ((mode & FMODE_NDELAY) && (cdi->options & CDO_USE_FFLAGS)) { |
1da177e4 LT |
992 | ret = cdi->ops->open(cdi, 1); |
993 | } else { | |
994 | ret = open_for_data(cdi); | |
995 | if (ret) | |
996 | goto err; | |
997 | cdrom_mmc3_profile(cdi); | |
bbc1cc97 | 998 | if (mode & FMODE_WRITE) { |
1da177e4 LT |
999 | ret = -EROFS; |
1000 | if (cdrom_open_write(cdi)) | |
16070428 | 1001 | goto err_release; |
1da177e4 | 1002 | if (!CDROM_CAN(CDC_RAM)) |
16070428 | 1003 | goto err_release; |
1da177e4 LT |
1004 | ret = 0; |
1005 | cdi->media_written = 0; | |
1006 | } | |
1007 | } | |
1008 | ||
1009 | if (ret) | |
1010 | goto err; | |
1011 | ||
1012 | cdinfo(CD_OPEN, "Use count for \"/dev/%s\" now %d\n", | |
1013 | cdi->name, cdi->use_count); | |
1014 | /* Do this on open. Don't wait for mount, because they might | |
1015 | not be mounting, but opening with O_NONBLOCK */ | |
bbc1cc97 | 1016 | check_disk_change(bdev); |
1da177e4 | 1017 | return 0; |
16070428 | 1018 | err_release: |
ae3ba4fd AV |
1019 | if (CDROM_CAN(CDC_LOCK) && cdi->options & CDO_LOCK) { |
1020 | cdi->ops->lock_door(cdi, 0); | |
1021 | cdinfo(CD_OPEN, "door unlocked.\n"); | |
1022 | } | |
16070428 | 1023 | cdi->ops->release(cdi); |
1da177e4 LT |
1024 | err: |
1025 | cdi->use_count--; | |
1026 | return ret; | |
1027 | } | |
1028 | ||
1029 | static | |
1030 | int open_for_data(struct cdrom_device_info * cdi) | |
1031 | { | |
1032 | int ret; | |
1033 | struct cdrom_device_ops *cdo = cdi->ops; | |
1034 | tracktype tracks; | |
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); | |
1048 | if (ret) { | |
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.*/ | |
1055 | ret=-ENOMEDIUM; | |
1056 | goto clean_up_and_return; | |
1057 | } | |
1058 | } else { | |
1059 | cdinfo(CD_OPEN, "bummer. this drive can't close the tray.\n"); | |
1060 | ret=-ENOMEDIUM; | |
1061 | goto clean_up_and_return; | |
1062 | } | |
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"); | |
1068 | ret=-ENOMEDIUM; | |
1069 | goto clean_up_and_return; | |
1070 | } | |
1071 | cdinfo(CD_OPEN, "the tray is now closed.\n"); | |
1072 | } | |
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) { | |
1076 | ret = -ENOMEDIUM; | |
1077 | goto clean_up_and_return; | |
1078 | } | |
1079 | } | |
1080 | cdrom_count_tracks(cdi, &tracks); | |
1081 | if (tracks.error == CDS_NO_DISC) { | |
1082 | cdinfo(CD_OPEN, "bummer. no disc.\n"); | |
1083 | ret=-ENOMEDIUM; | |
1084 | goto clean_up_and_return; | |
1085 | } | |
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", | |
ba25f9dc | 1094 | (unsigned int)task_pid_nr(current)); |
1da177e4 LT |
1095 | ret=-EMEDIUMTYPE; |
1096 | goto clean_up_and_return; | |
1097 | } | |
1098 | else { | |
1099 | cdinfo(CD_OPEN, "wrong media type, but CDO_CHECK_TYPE not set.\n"); | |
1100 | } | |
1101 | } | |
1102 | ||
1103 | cdinfo(CD_OPEN, "all seems well, opening the device.\n"); | |
1104 | ||
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... */ | |
1111 | if (ret) { | |
1112 | cdinfo(CD_OPEN, "open device failed.\n"); | |
1113 | goto clean_up_and_return; | |
1114 | } | |
1115 | if (CDROM_CAN(CDC_LOCK) && (cdi->options & CDO_LOCK)) { | |
1116 | cdo->lock_door(cdi, 1); | |
1117 | cdinfo(CD_OPEN, "door locked.\n"); | |
1118 | } | |
1119 | cdinfo(CD_OPEN, "device opened successfully.\n"); | |
1120 | return ret; | |
1121 | ||
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: | |
00d6da9b | 1128 | cdinfo(CD_OPEN, "open failed.\n"); |
1da177e4 LT |
1129 | if (CDROM_CAN(CDC_LOCK) && cdi->options & CDO_LOCK) { |
1130 | cdo->lock_door(cdi, 0); | |
1131 | cdinfo(CD_OPEN, "door unlocked.\n"); | |
1132 | } | |
1133 | return ret; | |
1134 | } | |
1135 | ||
1136 | /* This code is similar to that in open_for_data. The routine is called | |
1137 | whenever an audio play operation is requested. | |
1138 | */ | |
ecb80c6a AB |
1139 | static int check_for_audio_disc(struct cdrom_device_info * cdi, |
1140 | struct cdrom_device_ops * cdo) | |
1da177e4 LT |
1141 | { |
1142 | int ret; | |
1143 | tracktype tracks; | |
1144 | cdinfo(CD_OPEN, "entering check_for_audio_disc\n"); | |
1145 | if (!(cdi->options & CDO_CHECK_TYPE)) | |
1146 | return 0; | |
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); | |
1157 | if (ret) { | |
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.*/ | |
1164 | return -ENOMEDIUM; | |
1165 | } | |
1166 | } else { | |
1167 | cdinfo(CD_OPEN, "bummer. this driver can't close the tray.\n"); | |
1168 | return -ENOMEDIUM; | |
1169 | } | |
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"); | |
1174 | return -ENOMEDIUM; | |
1175 | } | |
1176 | if (ret!=CDS_DISC_OK) { | |
1177 | cdinfo(CD_OPEN, "bummer. disc isn't ready.\n"); | |
1178 | return -EIO; | |
1179 | } | |
1180 | cdinfo(CD_OPEN, "the tray is now closed.\n"); | |
1181 | } | |
1182 | } | |
1183 | cdrom_count_tracks(cdi, &tracks); | |
1184 | if (tracks.error) | |
1185 | return(tracks.error); | |
1186 | ||
1187 | if (tracks.audio==0) | |
1188 | return -EMEDIUMTYPE; | |
1189 | ||
1190 | return 0; | |
1191 | } | |
1192 | ||
bbc1cc97 | 1193 | void cdrom_release(struct cdrom_device_info *cdi, fmode_t mode) |
1da177e4 LT |
1194 | { |
1195 | struct cdrom_device_ops *cdo = cdi->ops; | |
1196 | int opened_for_data; | |
1197 | ||
35841f70 | 1198 | cdinfo(CD_CLOSE, "entering cdrom_release\n"); |
1da177e4 LT |
1199 | |
1200 | if (cdi->use_count > 0) | |
1201 | cdi->use_count--; | |
35841f70 BP |
1202 | |
1203 | if (cdi->use_count == 0) { | |
1da177e4 | 1204 | cdinfo(CD_CLOSE, "Use count for \"/dev/%s\" now zero\n", cdi->name); |
1da177e4 | 1205 | cdrom_dvd_rw_close_write(cdi); |
35841f70 BP |
1206 | |
1207 | if ((cdo->capability & CDC_LOCK) && !keeplocked) { | |
1208 | cdinfo(CD_CLOSE, "Unlocking door!\n"); | |
1209 | cdo->lock_door(cdi, 0); | |
1210 | } | |
1da177e4 | 1211 | } |
35841f70 | 1212 | |
1da177e4 | 1213 | opened_for_data = !(cdi->options & CDO_USE_FFLAGS) || |
bbc1cc97 | 1214 | !(mode & FMODE_NDELAY); |
1da177e4 LT |
1215 | |
1216 | /* | |
1217 | * flush cache on last write release | |
1218 | */ | |
1219 | if (CDROM_CAN(CDC_RAM) && !cdi->use_count && cdi->for_data) | |
1220 | cdrom_close_write(cdi); | |
1221 | ||
1222 | cdo->release(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); | |
1227 | } | |
1da177e4 LT |
1228 | } |
1229 | ||
1230 | static int cdrom_read_mech_status(struct cdrom_device_info *cdi, | |
1231 | struct cdrom_changer_info *buf) | |
1232 | { | |
1233 | struct packet_command cgc; | |
1234 | struct cdrom_device_ops *cdo = cdi->ops; | |
1235 | int length; | |
1236 | ||
1237 | /* | |
1238 | * Sanyo changer isn't spec compliant (doesn't use regular change | |
1239 | * LOAD_UNLOAD command, and it doesn't implement the mech status | |
1240 | * command below | |
1241 | */ | |
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; | |
1248 | } | |
1249 | return 0; | |
1250 | } | |
1251 | ||
1252 | length = sizeof(struct cdrom_mechstat_header) + | |
1253 | cdi->capacity * sizeof(struct cdrom_slot); | |
1254 | ||
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); | |
1260 | } | |
1261 | ||
1262 | static int cdrom_slot_status(struct cdrom_device_info *cdi, int slot) | |
1263 | { | |
1264 | struct cdrom_changer_info *info; | |
1265 | int ret; | |
1266 | ||
1267 | cdinfo(CD_CHANGER, "entering cdrom_slot_status()\n"); | |
1268 | if (cdi->sanyo_slot) | |
1269 | return CDS_NO_INFO; | |
1270 | ||
1271 | info = kmalloc(sizeof(*info), GFP_KERNEL); | |
1272 | if (!info) | |
1273 | return -ENOMEM; | |
1274 | ||
1275 | if ((ret = cdrom_read_mech_status(cdi, info))) | |
1276 | goto out_free; | |
1277 | ||
1278 | if (info->slots[slot].disc_present) | |
1279 | ret = CDS_DISC_OK; | |
1280 | else | |
1281 | ret = CDS_NO_DISC; | |
1282 | ||
1283 | out_free: | |
1284 | kfree(info); | |
1285 | return ret; | |
1286 | } | |
1287 | ||
1288 | /* Return the number of slots for an ATAPI/SCSI cdrom, | |
1289 | * return 1 if not a changer. | |
1290 | */ | |
1291 | int cdrom_number_of_slots(struct cdrom_device_info *cdi) | |
1292 | { | |
1293 | int status; | |
1294 | int nslots = 1; | |
1295 | struct cdrom_changer_info *info; | |
1296 | ||
1297 | cdinfo(CD_CHANGER, "entering cdrom_number_of_slots()\n"); | |
1298 | /* cdrom_read_mech_status requires a valid value for capacity: */ | |
1299 | cdi->capacity = 0; | |
1300 | ||
1301 | info = kmalloc(sizeof(*info), GFP_KERNEL); | |
1302 | if (!info) | |
1303 | return -ENOMEM; | |
1304 | ||
1305 | if ((status = cdrom_read_mech_status(cdi, info)) == 0) | |
1306 | nslots = info->hdr.nslots; | |
1307 | ||
1308 | kfree(info); | |
1309 | return nslots; | |
1310 | } | |
1311 | ||
1312 | ||
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) | |
1315 | { | |
1316 | struct packet_command cgc; | |
1317 | ||
1318 | cdinfo(CD_CHANGER, "entering cdrom_load_unload()\n"); | |
1319 | if (cdi->sanyo_slot && slot < 0) | |
1320 | return 0; | |
1321 | ||
1322 | init_cdrom_command(&cgc, NULL, 0, CGC_DATA_NONE); | |
1323 | cgc.cmd[0] = GPCMD_LOAD_UNLOAD; | |
1324 | cgc.cmd[4] = 2 + (slot >= 0); | |
1325 | cgc.cmd[8] = slot; | |
1326 | cgc.timeout = 60 * HZ; | |
1327 | ||
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; | |
1333 | cgc.cmd[7] = slot; | |
1334 | cgc.cmd[4] = cgc.cmd[8] = 0; | |
1335 | cdi->sanyo_slot = slot ? slot : 3; | |
1336 | } | |
1337 | ||
1338 | return cdi->ops->generic_packet(cdi, &cgc); | |
1339 | } | |
1340 | ||
1341 | static int cdrom_select_disc(struct cdrom_device_info *cdi, int slot) | |
1342 | { | |
1343 | struct cdrom_changer_info *info; | |
1344 | int curslot; | |
1345 | int ret; | |
1346 | ||
1347 | cdinfo(CD_CHANGER, "entering cdrom_select_disc()\n"); | |
1348 | if (!CDROM_CAN(CDC_SELECT_DISC)) | |
1349 | return -EDRIVE_CANT_DO_THIS; | |
1350 | ||
1351 | (void) cdi->ops->media_changed(cdi, slot); | |
1352 | ||
1353 | if (slot == CDSL_NONE) { | |
1354 | /* set media changed bits, on both queues */ | |
1355 | cdi->mc_flags = 0x3; | |
1356 | return cdrom_load_unload(cdi, -1); | |
1357 | } | |
1358 | ||
1359 | info = kmalloc(sizeof(*info), GFP_KERNEL); | |
1360 | if (!info) | |
1361 | return -ENOMEM; | |
1362 | ||
1363 | if ((ret = cdrom_read_mech_status(cdi, info))) { | |
1364 | kfree(info); | |
1365 | return ret; | |
1366 | } | |
1367 | ||
1368 | curslot = info->hdr.curslot; | |
1369 | kfree(info); | |
1370 | ||
1371 | if (cdi->use_count > 1 || keeplocked) { | |
1372 | if (slot == CDSL_CURRENT) { | |
1373 | return curslot; | |
1374 | } else { | |
1375 | return -EBUSY; | |
1376 | } | |
1377 | } | |
1378 | ||
1379 | /* Specifying CDSL_CURRENT will attempt to load the currnet slot, | |
1380 | which is useful if it had been previously unloaded. | |
1381 | Whether it can or not, it returns the current slot. | |
1382 | Similarly, if slot happens to be the current one, we still | |
1383 | try and load it. */ | |
1384 | if (slot == CDSL_CURRENT) | |
1385 | slot = curslot; | |
1386 | ||
1387 | /* set media changed bits on both queues */ | |
1388 | cdi->mc_flags = 0x3; | |
1389 | if ((ret = cdrom_load_unload(cdi, slot))) | |
1390 | return ret; | |
1391 | ||
1392 | return slot; | |
1393 | } | |
1394 | ||
1395 | /* We want to make media_changed accessible to the user through an | |
1396 | * ioctl. The main problem now is that we must double-buffer the | |
1397 | * low-level implementation, to assure that the VFS and the user both | |
1398 | * see a medium change once. | |
1399 | */ | |
1400 | ||
1401 | static | |
1402 | int media_changed(struct cdrom_device_info *cdi, int queue) | |
1403 | { | |
1404 | unsigned int mask = (1 << (queue & 1)); | |
1405 | int ret = !!(cdi->mc_flags & mask); | |
1406 | ||
1407 | if (!CDROM_CAN(CDC_MEDIA_CHANGED)) | |
1408 | return ret; | |
1409 | /* changed since last call? */ | |
1410 | if (cdi->ops->media_changed(cdi, CDSL_CURRENT)) { | |
1411 | cdi->mc_flags = 0x3; /* set bit on both queues */ | |
1412 | ret |= 1; | |
1413 | cdi->media_written = 0; | |
1414 | } | |
1415 | cdi->mc_flags &= ~mask; /* clear bit */ | |
1416 | return ret; | |
1417 | } | |
1418 | ||
1419 | int cdrom_media_changed(struct cdrom_device_info *cdi) | |
1420 | { | |
1421 | /* This talks to the VFS, which doesn't like errors - just 1 or 0. | |
1422 | * Returning "0" is always safe (media hasn't been changed). Do that | |
1423 | * if the low-level cdrom driver dosn't support media changed. */ | |
1424 | if (cdi == NULL || cdi->ops->media_changed == NULL) | |
1425 | return 0; | |
1426 | if (!CDROM_CAN(CDC_MEDIA_CHANGED)) | |
1427 | return 0; | |
1428 | return media_changed(cdi, 0); | |
1429 | } | |
1430 | ||
1431 | /* badly broken, I know. Is due for a fixup anytime. */ | |
1432 | static void cdrom_count_tracks(struct cdrom_device_info *cdi, tracktype* tracks) | |
1433 | { | |
1434 | struct cdrom_tochdr header; | |
1435 | struct cdrom_tocentry entry; | |
1436 | int ret, i; | |
1437 | tracks->data=0; | |
1438 | tracks->audio=0; | |
1439 | tracks->cdi=0; | |
1440 | tracks->xa=0; | |
1441 | tracks->error=0; | |
1442 | cdinfo(CD_COUNT_TRACKS, "entering cdrom_count_tracks\n"); | |
1da177e4 LT |
1443 | /* Grab the TOC header so we can see how many tracks there are */ |
1444 | if ((ret = cdi->ops->audio_ioctl(cdi, CDROMREADTOCHDR, &header))) { | |
1445 | if (ret == -ENOMEDIUM) | |
1446 | tracks->error = CDS_NO_DISC; | |
1447 | else | |
1448 | tracks->error = CDS_NO_INFO; | |
1449 | return; | |
1450 | } | |
1451 | /* check what type of tracks are on this disc */ | |
1452 | entry.cdte_format = CDROM_MSF; | |
1453 | for (i = header.cdth_trk0; i <= header.cdth_trk1; i++) { | |
1454 | entry.cdte_track = i; | |
1455 | if (cdi->ops->audio_ioctl(cdi, CDROMREADTOCENTRY, &entry)) { | |
1456 | tracks->error=CDS_NO_INFO; | |
1457 | return; | |
1458 | } | |
1459 | if (entry.cdte_ctrl & CDROM_DATA_TRACK) { | |
1460 | if (entry.cdte_format == 0x10) | |
1461 | tracks->cdi++; | |
1462 | else if (entry.cdte_format == 0x20) | |
1463 | tracks->xa++; | |
1464 | else | |
1465 | tracks->data++; | |
1466 | } else | |
1467 | tracks->audio++; | |
1468 | cdinfo(CD_COUNT_TRACKS, "track %d: format=%d, ctrl=%d\n", | |
1469 | i, entry.cdte_format, entry.cdte_ctrl); | |
1470 | } | |
1471 | cdinfo(CD_COUNT_TRACKS, "disc has %d tracks: %d=audio %d=data %d=Cd-I %d=XA\n", | |
1472 | header.cdth_trk1, tracks->audio, tracks->data, | |
1473 | tracks->cdi, tracks->xa); | |
1474 | } | |
1475 | ||
1476 | /* Requests to the low-level drivers will /always/ be done in the | |
1477 | following format convention: | |
1478 | ||
1479 | CDROM_LBA: all data-related requests. | |
1480 | CDROM_MSF: all audio-related requests. | |
1481 | ||
1482 | However, a low-level implementation is allowed to refuse this | |
1483 | request, and return information in its own favorite format. | |
1484 | ||
1485 | It doesn't make sense /at all/ to ask for a play_audio in LBA | |
1486 | format, or ask for multi-session info in MSF format. However, for | |
1487 | backward compatibility these format requests will be satisfied, but | |
1488 | the requests to the low-level drivers will be sanitized in the more | |
1489 | meaningful format indicated above. | |
1490 | */ | |
1491 | ||
1492 | static | |
1493 | void sanitize_format(union cdrom_addr *addr, | |
1494 | u_char * curr, u_char requested) | |
1495 | { | |
1496 | if (*curr == requested) | |
1497 | return; /* nothing to be done! */ | |
1498 | if (requested == CDROM_LBA) { | |
1499 | addr->lba = (int) addr->msf.frame + | |
1500 | 75 * (addr->msf.second - 2 + 60 * addr->msf.minute); | |
1501 | } else { /* CDROM_MSF */ | |
1502 | int lba = addr->lba; | |
1503 | addr->msf.frame = lba % 75; | |
1504 | lba /= 75; | |
1505 | lba += 2; | |
1506 | addr->msf.second = lba % 60; | |
1507 | addr->msf.minute = lba / 60; | |
1508 | } | |
1509 | *curr = requested; | |
1510 | } | |
1511 | ||
1512 | void init_cdrom_command(struct packet_command *cgc, void *buf, int len, | |
1513 | int type) | |
1514 | { | |
1515 | memset(cgc, 0, sizeof(struct packet_command)); | |
1516 | if (buf) | |
1517 | memset(buf, 0, len); | |
1518 | cgc->buffer = (char *) buf; | |
1519 | cgc->buflen = len; | |
1520 | cgc->data_direction = type; | |
2e11c207 | 1521 | cgc->timeout = CDROM_DEF_TIMEOUT; |
1da177e4 LT |
1522 | } |
1523 | ||
1524 | /* DVD handling */ | |
1525 | ||
1526 | #define copy_key(dest,src) memcpy((dest), (src), sizeof(dvd_key)) | |
1527 | #define copy_chal(dest,src) memcpy((dest), (src), sizeof(dvd_challenge)) | |
1528 | ||
1529 | static void setup_report_key(struct packet_command *cgc, unsigned agid, unsigned type) | |
1530 | { | |
1531 | cgc->cmd[0] = GPCMD_REPORT_KEY; | |
1532 | cgc->cmd[10] = type | (agid << 6); | |
1533 | switch (type) { | |
1534 | case 0: case 8: case 5: { | |
1535 | cgc->buflen = 8; | |
1536 | break; | |
1537 | } | |
1538 | case 1: { | |
1539 | cgc->buflen = 16; | |
1540 | break; | |
1541 | } | |
1542 | case 2: case 4: { | |
1543 | cgc->buflen = 12; | |
1544 | break; | |
1545 | } | |
1546 | } | |
1547 | cgc->cmd[9] = cgc->buflen; | |
1548 | cgc->data_direction = CGC_DATA_READ; | |
1549 | } | |
1550 | ||
1551 | static void setup_send_key(struct packet_command *cgc, unsigned agid, unsigned type) | |
1552 | { | |
1553 | cgc->cmd[0] = GPCMD_SEND_KEY; | |
1554 | cgc->cmd[10] = type | (agid << 6); | |
1555 | switch (type) { | |
1556 | case 1: { | |
1557 | cgc->buflen = 16; | |
1558 | break; | |
1559 | } | |
1560 | case 3: { | |
1561 | cgc->buflen = 12; | |
1562 | break; | |
1563 | } | |
1564 | case 6: { | |
1565 | cgc->buflen = 8; | |
1566 | break; | |
1567 | } | |
1568 | } | |
1569 | cgc->cmd[9] = cgc->buflen; | |
1570 | cgc->data_direction = CGC_DATA_WRITE; | |
1571 | } | |
1572 | ||
1573 | static int dvd_do_auth(struct cdrom_device_info *cdi, dvd_authinfo *ai) | |
1574 | { | |
1575 | int ret; | |
fce53847 | 1576 | u_char buf[20]; |
1da177e4 LT |
1577 | struct packet_command cgc; |
1578 | struct cdrom_device_ops *cdo = cdi->ops; | |
fce53847 | 1579 | rpc_state_t rpc_state; |
1da177e4 | 1580 | |
fce53847 | 1581 | memset(buf, 0, sizeof(buf)); |
1da177e4 LT |
1582 | init_cdrom_command(&cgc, buf, 0, CGC_DATA_READ); |
1583 | ||
1584 | switch (ai->type) { | |
1585 | /* LU data send */ | |
1586 | case DVD_LU_SEND_AGID: | |
1587 | cdinfo(CD_DVD, "entering DVD_LU_SEND_AGID\n"); | |
1588 | cgc.quiet = 1; | |
1589 | setup_report_key(&cgc, ai->lsa.agid, 0); | |
1590 | ||
1591 | if ((ret = cdo->generic_packet(cdi, &cgc))) | |
fce53847 | 1592 | return ret; |
1da177e4 LT |
1593 | |
1594 | ai->lsa.agid = buf[7] >> 6; | |
1595 | /* Returning data, let host change state */ | |
1596 | break; | |
1597 | ||
1598 | case DVD_LU_SEND_KEY1: | |
1599 | cdinfo(CD_DVD, "entering DVD_LU_SEND_KEY1\n"); | |
1600 | setup_report_key(&cgc, ai->lsk.agid, 2); | |
1601 | ||
1602 | if ((ret = cdo->generic_packet(cdi, &cgc))) | |
fce53847 | 1603 | return ret; |
1da177e4 LT |
1604 | |
1605 | copy_key(ai->lsk.key, &buf[4]); | |
1606 | /* Returning data, let host change state */ | |
1607 | break; | |
1608 | ||
1609 | case DVD_LU_SEND_CHALLENGE: | |
1610 | cdinfo(CD_DVD, "entering DVD_LU_SEND_CHALLENGE\n"); | |
1611 | setup_report_key(&cgc, ai->lsc.agid, 1); | |
1612 | ||
1613 | if ((ret = cdo->generic_packet(cdi, &cgc))) | |
fce53847 | 1614 | return ret; |
1da177e4 LT |
1615 | |
1616 | copy_chal(ai->lsc.chal, &buf[4]); | |
1617 | /* Returning data, let host change state */ | |
1618 | break; | |
1619 | ||
1620 | /* Post-auth key */ | |
1621 | case DVD_LU_SEND_TITLE_KEY: | |
1622 | cdinfo(CD_DVD, "entering DVD_LU_SEND_TITLE_KEY\n"); | |
1623 | cgc.quiet = 1; | |
1624 | setup_report_key(&cgc, ai->lstk.agid, 4); | |
1625 | cgc.cmd[5] = ai->lstk.lba; | |
1626 | cgc.cmd[4] = ai->lstk.lba >> 8; | |
1627 | cgc.cmd[3] = ai->lstk.lba >> 16; | |
1628 | cgc.cmd[2] = ai->lstk.lba >> 24; | |
1629 | ||
1630 | if ((ret = cdo->generic_packet(cdi, &cgc))) | |
fce53847 | 1631 | return ret; |
1da177e4 LT |
1632 | |
1633 | ai->lstk.cpm = (buf[4] >> 7) & 1; | |
1634 | ai->lstk.cp_sec = (buf[4] >> 6) & 1; | |
1635 | ai->lstk.cgms = (buf[4] >> 4) & 3; | |
1636 | copy_key(ai->lstk.title_key, &buf[5]); | |
1637 | /* Returning data, let host change state */ | |
1638 | break; | |
1639 | ||
1640 | case DVD_LU_SEND_ASF: | |
1641 | cdinfo(CD_DVD, "entering DVD_LU_SEND_ASF\n"); | |
1642 | setup_report_key(&cgc, ai->lsasf.agid, 5); | |
1643 | ||
1644 | if ((ret = cdo->generic_packet(cdi, &cgc))) | |
fce53847 | 1645 | return ret; |
1da177e4 LT |
1646 | |
1647 | ai->lsasf.asf = buf[7] & 1; | |
1648 | break; | |
1649 | ||
1650 | /* LU data receive (LU changes state) */ | |
1651 | case DVD_HOST_SEND_CHALLENGE: | |
1652 | cdinfo(CD_DVD, "entering DVD_HOST_SEND_CHALLENGE\n"); | |
1653 | setup_send_key(&cgc, ai->hsc.agid, 1); | |
1654 | buf[1] = 0xe; | |
1655 | copy_chal(&buf[4], ai->hsc.chal); | |
1656 | ||
1657 | if ((ret = cdo->generic_packet(cdi, &cgc))) | |
fce53847 | 1658 | return ret; |
1da177e4 LT |
1659 | |
1660 | ai->type = DVD_LU_SEND_KEY1; | |
1661 | break; | |
1662 | ||
1663 | case DVD_HOST_SEND_KEY2: | |
1664 | cdinfo(CD_DVD, "entering DVD_HOST_SEND_KEY2\n"); | |
1665 | setup_send_key(&cgc, ai->hsk.agid, 3); | |
1666 | buf[1] = 0xa; | |
1667 | copy_key(&buf[4], ai->hsk.key); | |
1668 | ||
1669 | if ((ret = cdo->generic_packet(cdi, &cgc))) { | |
1670 | ai->type = DVD_AUTH_FAILURE; | |
fce53847 | 1671 | return ret; |
1da177e4 LT |
1672 | } |
1673 | ai->type = DVD_AUTH_ESTABLISHED; | |
1674 | break; | |
1675 | ||
1676 | /* Misc */ | |
1677 | case DVD_INVALIDATE_AGID: | |
1678 | cgc.quiet = 1; | |
1679 | cdinfo(CD_DVD, "entering DVD_INVALIDATE_AGID\n"); | |
1680 | setup_report_key(&cgc, ai->lsa.agid, 0x3f); | |
1681 | if ((ret = cdo->generic_packet(cdi, &cgc))) | |
fce53847 | 1682 | return ret; |
1da177e4 LT |
1683 | break; |
1684 | ||
1685 | /* Get region settings */ | |
1686 | case DVD_LU_SEND_RPC_STATE: | |
1687 | cdinfo(CD_DVD, "entering DVD_LU_SEND_RPC_STATE\n"); | |
1688 | setup_report_key(&cgc, 0, 8); | |
fce53847 FT |
1689 | memset(&rpc_state, 0, sizeof(rpc_state_t)); |
1690 | cgc.buffer = (char *) &rpc_state; | |
1da177e4 LT |
1691 | |
1692 | if ((ret = cdo->generic_packet(cdi, &cgc))) | |
fce53847 | 1693 | return ret; |
1da177e4 | 1694 | |
fce53847 FT |
1695 | ai->lrpcs.type = rpc_state.type_code; |
1696 | ai->lrpcs.vra = rpc_state.vra; | |
1697 | ai->lrpcs.ucca = rpc_state.ucca; | |
1698 | ai->lrpcs.region_mask = rpc_state.region_mask; | |
1699 | ai->lrpcs.rpc_scheme = rpc_state.rpc_scheme; | |
1da177e4 LT |
1700 | break; |
1701 | ||
1702 | /* Set region settings */ | |
1703 | case DVD_HOST_SEND_RPC_STATE: | |
1704 | cdinfo(CD_DVD, "entering DVD_HOST_SEND_RPC_STATE\n"); | |
1705 | setup_send_key(&cgc, 0, 6); | |
1706 | buf[1] = 6; | |
1707 | buf[4] = ai->hrpcs.pdrc; | |
1708 | ||
1709 | if ((ret = cdo->generic_packet(cdi, &cgc))) | |
fce53847 | 1710 | return ret; |
1da177e4 LT |
1711 | break; |
1712 | ||
1713 | default: | |
1714 | cdinfo(CD_WARNING, "Invalid DVD key ioctl (%d)\n", ai->type); | |
fce53847 | 1715 | return -ENOTTY; |
1da177e4 | 1716 | } |
fce53847 FT |
1717 | |
1718 | return 0; | |
1da177e4 LT |
1719 | } |
1720 | ||
d194139c MS |
1721 | static int dvd_read_physical(struct cdrom_device_info *cdi, dvd_struct *s, |
1722 | struct packet_command *cgc) | |
1da177e4 | 1723 | { |
fce53847 | 1724 | unsigned char buf[21], *base; |
1da177e4 | 1725 | struct dvd_layer *layer; |
1da177e4 LT |
1726 | struct cdrom_device_ops *cdo = cdi->ops; |
1727 | int ret, layer_num = s->physical.layer_num; | |
1728 | ||
1729 | if (layer_num >= DVD_LAYERS) | |
1730 | return -EINVAL; | |
1731 | ||
d194139c MS |
1732 | init_cdrom_command(cgc, buf, sizeof(buf), CGC_DATA_READ); |
1733 | cgc->cmd[0] = GPCMD_READ_DVD_STRUCTURE; | |
1734 | cgc->cmd[6] = layer_num; | |
1735 | cgc->cmd[7] = s->type; | |
1736 | cgc->cmd[9] = cgc->buflen & 0xff; | |
1da177e4 LT |
1737 | |
1738 | /* | |
1739 | * refrain from reporting errors on non-existing layers (mainly) | |
1740 | */ | |
d194139c | 1741 | cgc->quiet = 1; |
1da177e4 | 1742 | |
d194139c MS |
1743 | ret = cdo->generic_packet(cdi, cgc); |
1744 | if (ret) | |
fce53847 | 1745 | return ret; |
1da177e4 LT |
1746 | |
1747 | base = &buf[4]; | |
1748 | layer = &s->physical.layer[layer_num]; | |
1749 | ||
1750 | /* | |
1751 | * place the data... really ugly, but at least we won't have to | |
1752 | * worry about endianess in userspace. | |
1753 | */ | |
1754 | memset(layer, 0, sizeof(*layer)); | |
1755 | layer->book_version = base[0] & 0xf; | |
1756 | layer->book_type = base[0] >> 4; | |
1757 | layer->min_rate = base[1] & 0xf; | |
1758 | layer->disc_size = base[1] >> 4; | |
1759 | layer->layer_type = base[2] & 0xf; | |
1760 | layer->track_path = (base[2] >> 4) & 1; | |
1761 | layer->nlayers = (base[2] >> 5) & 3; | |
1762 | layer->track_density = base[3] & 0xf; | |
1763 | layer->linear_density = base[3] >> 4; | |
1764 | layer->start_sector = base[5] << 16 | base[6] << 8 | base[7]; | |
1765 | layer->end_sector = base[9] << 16 | base[10] << 8 | base[11]; | |
1766 | layer->end_sector_l0 = base[13] << 16 | base[14] << 8 | base[15]; | |
1767 | layer->bca = base[16] >> 7; | |
1768 | ||
fce53847 | 1769 | return 0; |
1da177e4 LT |
1770 | } |
1771 | ||
d194139c MS |
1772 | static int dvd_read_copyright(struct cdrom_device_info *cdi, dvd_struct *s, |
1773 | struct packet_command *cgc) | |
1da177e4 LT |
1774 | { |
1775 | int ret; | |
fce53847 | 1776 | u_char buf[8]; |
1da177e4 LT |
1777 | struct cdrom_device_ops *cdo = cdi->ops; |
1778 | ||
d194139c MS |
1779 | init_cdrom_command(cgc, buf, sizeof(buf), CGC_DATA_READ); |
1780 | cgc->cmd[0] = GPCMD_READ_DVD_STRUCTURE; | |
1781 | cgc->cmd[6] = s->copyright.layer_num; | |
1782 | cgc->cmd[7] = s->type; | |
1783 | cgc->cmd[8] = cgc->buflen >> 8; | |
1784 | cgc->cmd[9] = cgc->buflen & 0xff; | |
1da177e4 | 1785 | |
d194139c MS |
1786 | ret = cdo->generic_packet(cdi, cgc); |
1787 | if (ret) | |
fce53847 | 1788 | return ret; |
1da177e4 LT |
1789 | |
1790 | s->copyright.cpst = buf[4]; | |
1791 | s->copyright.rmi = buf[5]; | |
1792 | ||
fce53847 | 1793 | return 0; |
1da177e4 LT |
1794 | } |
1795 | ||
d194139c MS |
1796 | static int dvd_read_disckey(struct cdrom_device_info *cdi, dvd_struct *s, |
1797 | struct packet_command *cgc) | |
1da177e4 LT |
1798 | { |
1799 | int ret, size; | |
1800 | u_char *buf; | |
1da177e4 LT |
1801 | struct cdrom_device_ops *cdo = cdi->ops; |
1802 | ||
1803 | size = sizeof(s->disckey.value) + 4; | |
1804 | ||
d194139c MS |
1805 | buf = kmalloc(size, GFP_KERNEL); |
1806 | if (!buf) | |
1da177e4 LT |
1807 | return -ENOMEM; |
1808 | ||
d194139c MS |
1809 | init_cdrom_command(cgc, buf, size, CGC_DATA_READ); |
1810 | cgc->cmd[0] = GPCMD_READ_DVD_STRUCTURE; | |
1811 | cgc->cmd[7] = s->type; | |
1812 | cgc->cmd[8] = size >> 8; | |
1813 | cgc->cmd[9] = size & 0xff; | |
1814 | cgc->cmd[10] = s->disckey.agid << 6; | |
1da177e4 | 1815 | |
d194139c MS |
1816 | ret = cdo->generic_packet(cdi, cgc); |
1817 | if (!ret) | |
1da177e4 LT |
1818 | memcpy(s->disckey.value, &buf[4], sizeof(s->disckey.value)); |
1819 | ||
1820 | kfree(buf); | |
1821 | return ret; | |
1822 | } | |
1823 | ||
d194139c MS |
1824 | static int dvd_read_bca(struct cdrom_device_info *cdi, dvd_struct *s, |
1825 | struct packet_command *cgc) | |
1da177e4 | 1826 | { |
d194139c MS |
1827 | int ret, size = 4 + 188; |
1828 | u_char *buf; | |
1da177e4 LT |
1829 | struct cdrom_device_ops *cdo = cdi->ops; |
1830 | ||
d194139c MS |
1831 | buf = kmalloc(size, GFP_KERNEL); |
1832 | if (!buf) | |
1833 | return -ENOMEM; | |
1da177e4 | 1834 | |
d194139c MS |
1835 | init_cdrom_command(cgc, buf, size, CGC_DATA_READ); |
1836 | cgc->cmd[0] = GPCMD_READ_DVD_STRUCTURE; | |
1837 | cgc->cmd[7] = s->type; | |
1838 | cgc->cmd[9] = cgc->buflen & 0xff; | |
1839 | ||
1840 | ret = cdo->generic_packet(cdi, cgc); | |
1841 | if (ret) | |
1842 | goto out; | |
1da177e4 LT |
1843 | |
1844 | s->bca.len = buf[0] << 8 | buf[1]; | |
1845 | if (s->bca.len < 12 || s->bca.len > 188) { | |
1846 | cdinfo(CD_WARNING, "Received invalid BCA length (%d)\n", s->bca.len); | |
d194139c MS |
1847 | ret = -EIO; |
1848 | goto out; | |
1da177e4 LT |
1849 | } |
1850 | memcpy(s->bca.value, &buf[4], s->bca.len); | |
d194139c MS |
1851 | ret = 0; |
1852 | out: | |
1853 | kfree(buf); | |
1854 | return ret; | |
1da177e4 LT |
1855 | } |
1856 | ||
d194139c MS |
1857 | static int dvd_read_manufact(struct cdrom_device_info *cdi, dvd_struct *s, |
1858 | struct packet_command *cgc) | |
1da177e4 LT |
1859 | { |
1860 | int ret = 0, size; | |
1861 | u_char *buf; | |
1da177e4 LT |
1862 | struct cdrom_device_ops *cdo = cdi->ops; |
1863 | ||
1864 | size = sizeof(s->manufact.value) + 4; | |
1865 | ||
d194139c MS |
1866 | buf = kmalloc(size, GFP_KERNEL); |
1867 | if (!buf) | |
1da177e4 LT |
1868 | return -ENOMEM; |
1869 | ||
d194139c MS |
1870 | init_cdrom_command(cgc, buf, size, CGC_DATA_READ); |
1871 | cgc->cmd[0] = GPCMD_READ_DVD_STRUCTURE; | |
1872 | cgc->cmd[7] = s->type; | |
1873 | cgc->cmd[8] = size >> 8; | |
1874 | cgc->cmd[9] = size & 0xff; | |
1da177e4 | 1875 | |
d194139c MS |
1876 | ret = cdo->generic_packet(cdi, cgc); |
1877 | if (ret) | |
1878 | goto out; | |
1da177e4 LT |
1879 | |
1880 | s->manufact.len = buf[0] << 8 | buf[1]; | |
1881 | if (s->manufact.len < 0 || s->manufact.len > 2048) { | |
1882 | cdinfo(CD_WARNING, "Received invalid manufacture info length" | |
1883 | " (%d)\n", s->manufact.len); | |
1884 | ret = -EIO; | |
1885 | } else { | |
1886 | memcpy(s->manufact.value, &buf[4], s->manufact.len); | |
1887 | } | |
1888 | ||
d194139c | 1889 | out: |
1da177e4 LT |
1890 | kfree(buf); |
1891 | return ret; | |
1892 | } | |
1893 | ||
d194139c MS |
1894 | static int dvd_read_struct(struct cdrom_device_info *cdi, dvd_struct *s, |
1895 | struct packet_command *cgc) | |
1da177e4 LT |
1896 | { |
1897 | switch (s->type) { | |
1898 | case DVD_STRUCT_PHYSICAL: | |
d194139c | 1899 | return dvd_read_physical(cdi, s, cgc); |
1da177e4 LT |
1900 | |
1901 | case DVD_STRUCT_COPYRIGHT: | |
d194139c | 1902 | return dvd_read_copyright(cdi, s, cgc); |
1da177e4 LT |
1903 | |
1904 | case DVD_STRUCT_DISCKEY: | |
d194139c | 1905 | return dvd_read_disckey(cdi, s, cgc); |
1da177e4 LT |
1906 | |
1907 | case DVD_STRUCT_BCA: | |
d194139c | 1908 | return dvd_read_bca(cdi, s, cgc); |
1da177e4 LT |
1909 | |
1910 | case DVD_STRUCT_MANUFACT: | |
d194139c | 1911 | return dvd_read_manufact(cdi, s, cgc); |
1da177e4 LT |
1912 | |
1913 | default: | |
1914 | cdinfo(CD_WARNING, ": Invalid DVD structure read requested (%d)\n", | |
1915 | s->type); | |
1916 | return -EINVAL; | |
1917 | } | |
1918 | } | |
1919 | ||
1920 | int cdrom_mode_sense(struct cdrom_device_info *cdi, | |
1921 | struct packet_command *cgc, | |
1922 | int page_code, int page_control) | |
1923 | { | |
1924 | struct cdrom_device_ops *cdo = cdi->ops; | |
1925 | ||
1926 | memset(cgc->cmd, 0, sizeof(cgc->cmd)); | |
1927 | ||
1928 | cgc->cmd[0] = GPCMD_MODE_SENSE_10; | |
1929 | cgc->cmd[2] = page_code | (page_control << 6); | |
1930 | cgc->cmd[7] = cgc->buflen >> 8; | |
1931 | cgc->cmd[8] = cgc->buflen & 0xff; | |
1932 | cgc->data_direction = CGC_DATA_READ; | |
1933 | return cdo->generic_packet(cdi, cgc); | |
1934 | } | |
1935 | ||
1936 | int cdrom_mode_select(struct cdrom_device_info *cdi, | |
1937 | struct packet_command *cgc) | |
1938 | { | |
1939 | struct cdrom_device_ops *cdo = cdi->ops; | |
1940 | ||
1941 | memset(cgc->cmd, 0, sizeof(cgc->cmd)); | |
1942 | memset(cgc->buffer, 0, 2); | |
1943 | cgc->cmd[0] = GPCMD_MODE_SELECT_10; | |
1944 | cgc->cmd[1] = 0x10; /* PF */ | |
1945 | cgc->cmd[7] = cgc->buflen >> 8; | |
1946 | cgc->cmd[8] = cgc->buflen & 0xff; | |
1947 | cgc->data_direction = CGC_DATA_WRITE; | |
1948 | return cdo->generic_packet(cdi, cgc); | |
1949 | } | |
1950 | ||
1951 | static int cdrom_read_subchannel(struct cdrom_device_info *cdi, | |
1952 | struct cdrom_subchnl *subchnl, int mcn) | |
1953 | { | |
1954 | struct cdrom_device_ops *cdo = cdi->ops; | |
1955 | struct packet_command cgc; | |
fce53847 | 1956 | char buffer[32]; |
1da177e4 LT |
1957 | int ret; |
1958 | ||
1959 | init_cdrom_command(&cgc, buffer, 16, CGC_DATA_READ); | |
1960 | cgc.cmd[0] = GPCMD_READ_SUBCHANNEL; | |
1961 | cgc.cmd[1] = 2; /* MSF addressing */ | |
1962 | cgc.cmd[2] = 0x40; /* request subQ data */ | |
1963 | cgc.cmd[3] = mcn ? 2 : 1; | |
1964 | cgc.cmd[8] = 16; | |
1965 | ||
1966 | if ((ret = cdo->generic_packet(cdi, &cgc))) | |
fce53847 | 1967 | return ret; |
1da177e4 LT |
1968 | |
1969 | subchnl->cdsc_audiostatus = cgc.buffer[1]; | |
1970 | subchnl->cdsc_format = CDROM_MSF; | |
1971 | subchnl->cdsc_ctrl = cgc.buffer[5] & 0xf; | |
1972 | subchnl->cdsc_trk = cgc.buffer[6]; | |
1973 | subchnl->cdsc_ind = cgc.buffer[7]; | |
1974 | ||
1975 | subchnl->cdsc_reladdr.msf.minute = cgc.buffer[13]; | |
1976 | subchnl->cdsc_reladdr.msf.second = cgc.buffer[14]; | |
1977 | subchnl->cdsc_reladdr.msf.frame = cgc.buffer[15]; | |
1978 | subchnl->cdsc_absaddr.msf.minute = cgc.buffer[9]; | |
1979 | subchnl->cdsc_absaddr.msf.second = cgc.buffer[10]; | |
1980 | subchnl->cdsc_absaddr.msf.frame = cgc.buffer[11]; | |
1981 | ||
fce53847 | 1982 | return 0; |
1da177e4 LT |
1983 | } |
1984 | ||
1985 | /* | |
1986 | * Specific READ_10 interface | |
1987 | */ | |
1988 | static int cdrom_read_cd(struct cdrom_device_info *cdi, | |
1989 | struct packet_command *cgc, int lba, | |
1990 | int blocksize, int nblocks) | |
1991 | { | |
1992 | struct cdrom_device_ops *cdo = cdi->ops; | |
1993 | ||
1994 | memset(&cgc->cmd, 0, sizeof(cgc->cmd)); | |
1995 | cgc->cmd[0] = GPCMD_READ_10; | |
1996 | cgc->cmd[2] = (lba >> 24) & 0xff; | |
1997 | cgc->cmd[3] = (lba >> 16) & 0xff; | |
1998 | cgc->cmd[4] = (lba >> 8) & 0xff; | |
1999 | cgc->cmd[5] = lba & 0xff; | |
2000 | cgc->cmd[6] = (nblocks >> 16) & 0xff; | |
2001 | cgc->cmd[7] = (nblocks >> 8) & 0xff; | |
2002 | cgc->cmd[8] = nblocks & 0xff; | |
2003 | cgc->buflen = blocksize * nblocks; | |
2004 | return cdo->generic_packet(cdi, cgc); | |
2005 | } | |
2006 | ||
2007 | /* very generic interface for reading the various types of blocks */ | |
2008 | static int cdrom_read_block(struct cdrom_device_info *cdi, | |
2009 | struct packet_command *cgc, | |
2010 | int lba, int nblocks, int format, int blksize) | |
2011 | { | |
2012 | struct cdrom_device_ops *cdo = cdi->ops; | |
2013 | ||
2014 | memset(&cgc->cmd, 0, sizeof(cgc->cmd)); | |
2015 | cgc->cmd[0] = GPCMD_READ_CD; | |
2016 | /* expected sector size - cdda,mode1,etc. */ | |
2017 | cgc->cmd[1] = format << 2; | |
2018 | /* starting address */ | |
2019 | cgc->cmd[2] = (lba >> 24) & 0xff; | |
2020 | cgc->cmd[3] = (lba >> 16) & 0xff; | |
2021 | cgc->cmd[4] = (lba >> 8) & 0xff; | |
2022 | cgc->cmd[5] = lba & 0xff; | |
2023 | /* number of blocks */ | |
2024 | cgc->cmd[6] = (nblocks >> 16) & 0xff; | |
2025 | cgc->cmd[7] = (nblocks >> 8) & 0xff; | |
2026 | cgc->cmd[8] = nblocks & 0xff; | |
2027 | cgc->buflen = blksize * nblocks; | |
2028 | ||
2029 | /* set the header info returned */ | |
2030 | switch (blksize) { | |
2031 | case CD_FRAMESIZE_RAW0 : cgc->cmd[9] = 0x58; break; | |
2032 | case CD_FRAMESIZE_RAW1 : cgc->cmd[9] = 0x78; break; | |
2033 | case CD_FRAMESIZE_RAW : cgc->cmd[9] = 0xf8; break; | |
2034 | default : cgc->cmd[9] = 0x10; | |
2035 | } | |
2036 | ||
2037 | return cdo->generic_packet(cdi, cgc); | |
2038 | } | |
2039 | ||
2040 | static int cdrom_read_cdda_old(struct cdrom_device_info *cdi, __u8 __user *ubuf, | |
2041 | int lba, int nframes) | |
2042 | { | |
2043 | struct packet_command cgc; | |
2044 | int ret = 0; | |
2045 | int nr; | |
2046 | ||
2047 | cdi->last_sense = 0; | |
2048 | ||
2049 | memset(&cgc, 0, sizeof(cgc)); | |
2050 | ||
2051 | /* | |
2052 | * start with will ra.nframes size, back down if alloc fails | |
2053 | */ | |
2054 | nr = nframes; | |
2055 | do { | |
2056 | cgc.buffer = kmalloc(CD_FRAMESIZE_RAW * nr, GFP_KERNEL); | |
2057 | if (cgc.buffer) | |
2058 | break; | |
2059 | ||
2060 | nr >>= 1; | |
2061 | } while (nr); | |
2062 | ||
2063 | if (!nr) | |
2064 | return -ENOMEM; | |
2065 | ||
2066 | if (!access_ok(VERIFY_WRITE, ubuf, nframes * CD_FRAMESIZE_RAW)) { | |
2067 | ret = -EFAULT; | |
2068 | goto out; | |
2069 | } | |
2070 | ||
2071 | cgc.data_direction = CGC_DATA_READ; | |
2072 | while (nframes > 0) { | |
2073 | if (nr > nframes) | |
2074 | nr = nframes; | |
2075 | ||
2076 | ret = cdrom_read_block(cdi, &cgc, lba, nr, 1, CD_FRAMESIZE_RAW); | |
2077 | if (ret) | |
2078 | break; | |
2079 | if (__copy_to_user(ubuf, cgc.buffer, CD_FRAMESIZE_RAW * nr)) { | |
2080 | ret = -EFAULT; | |
2081 | break; | |
2082 | } | |
2083 | ubuf += CD_FRAMESIZE_RAW * nr; | |
2084 | nframes -= nr; | |
2085 | lba += nr; | |
2086 | } | |
2087 | out: | |
2088 | kfree(cgc.buffer); | |
2089 | return ret; | |
2090 | } | |
2091 | ||
2092 | static int cdrom_read_cdda_bpc(struct cdrom_device_info *cdi, __u8 __user *ubuf, | |
2093 | int lba, int nframes) | |
2094 | { | |
165125e1 | 2095 | struct request_queue *q = cdi->disk->queue; |
1da177e4 LT |
2096 | struct request *rq; |
2097 | struct bio *bio; | |
2098 | unsigned int len; | |
2099 | int nr, ret = 0; | |
2100 | ||
2101 | if (!q) | |
2102 | return -ENXIO; | |
2103 | ||
2104 | cdi->last_sense = 0; | |
2105 | ||
2106 | while (nframes) { | |
2107 | nr = nframes; | |
2108 | if (cdi->cdda_method == CDDA_BPC_SINGLE) | |
2109 | nr = 1; | |
ae03bf63 MP |
2110 | if (nr * CD_FRAMESIZE_RAW > (queue_max_sectors(q) << 9)) |
2111 | nr = (queue_max_sectors(q) << 9) / CD_FRAMESIZE_RAW; | |
1da177e4 LT |
2112 | |
2113 | len = nr * CD_FRAMESIZE_RAW; | |
2114 | ||
febd7a5c AB |
2115 | rq = blk_get_request(q, READ, GFP_KERNEL); |
2116 | if (!rq) { | |
2117 | ret = -ENOMEM; | |
2118 | break; | |
2119 | } | |
2120 | ||
152e283f | 2121 | ret = blk_rq_map_user(q, rq, NULL, ubuf, len, GFP_KERNEL); |
febd7a5c AB |
2122 | if (ret) { |
2123 | blk_put_request(rq); | |
dd1cab95 | 2124 | break; |
febd7a5c | 2125 | } |
1da177e4 | 2126 | |
1da177e4 LT |
2127 | rq->cmd[0] = GPCMD_READ_CD; |
2128 | rq->cmd[1] = 1 << 2; | |
2129 | rq->cmd[2] = (lba >> 24) & 0xff; | |
2130 | rq->cmd[3] = (lba >> 16) & 0xff; | |
2131 | rq->cmd[4] = (lba >> 8) & 0xff; | |
2132 | rq->cmd[5] = lba & 0xff; | |
2133 | rq->cmd[6] = (nr >> 16) & 0xff; | |
2134 | rq->cmd[7] = (nr >> 8) & 0xff; | |
2135 | rq->cmd[8] = nr & 0xff; | |
2136 | rq->cmd[9] = 0xf8; | |
2137 | ||
2138 | rq->cmd_len = 12; | |
4aff5e23 | 2139 | rq->cmd_type = REQ_TYPE_BLOCK_PC; |
1da177e4 LT |
2140 | rq->timeout = 60 * HZ; |
2141 | bio = rq->bio; | |
2142 | ||
994ca9a1 | 2143 | if (blk_execute_rq(q, cdi->disk, rq, 0)) { |
1da177e4 LT |
2144 | struct request_sense *s = rq->sense; |
2145 | ret = -EIO; | |
2146 | cdi->last_sense = s->sense_key; | |
2147 | } | |
2148 | ||
8e5cfc45 | 2149 | if (blk_rq_unmap_user(bio)) |
1da177e4 | 2150 | ret = -EFAULT; |
febd7a5c | 2151 | blk_put_request(rq); |
1da177e4 LT |
2152 | |
2153 | if (ret) | |
2154 | break; | |
2155 | ||
2156 | nframes -= nr; | |
2157 | lba += nr; | |
2158 | ubuf += len; | |
2159 | } | |
2160 | ||
2161 | return ret; | |
2162 | } | |
2163 | ||
2164 | static int cdrom_read_cdda(struct cdrom_device_info *cdi, __u8 __user *ubuf, | |
2165 | int lba, int nframes) | |
2166 | { | |
2167 | int ret; | |
2168 | ||
2169 | if (cdi->cdda_method == CDDA_OLD) | |
2170 | return cdrom_read_cdda_old(cdi, ubuf, lba, nframes); | |
2171 | ||
2172 | retry: | |
2173 | /* | |
2174 | * for anything else than success and io error, we need to retry | |
2175 | */ | |
2176 | ret = cdrom_read_cdda_bpc(cdi, ubuf, lba, nframes); | |
2177 | if (!ret || ret != -EIO) | |
2178 | return ret; | |
2179 | ||
2180 | /* | |
2181 | * I've seen drives get sense 4/8/3 udma crc errors on multi | |
2182 | * frame dma, so drop to single frame dma if we need to | |
2183 | */ | |
2184 | if (cdi->cdda_method == CDDA_BPC_FULL && nframes > 1) { | |
e597cd09 | 2185 | pr_info("dropping to single frame dma\n"); |
1da177e4 LT |
2186 | cdi->cdda_method = CDDA_BPC_SINGLE; |
2187 | goto retry; | |
2188 | } | |
2189 | ||
2190 | /* | |
2191 | * so we have an io error of some sort with multi frame dma. if the | |
2192 | * condition wasn't a hardware error | |
2193 | * problems, not for any error | |
2194 | */ | |
2195 | if (cdi->last_sense != 0x04 && cdi->last_sense != 0x0b) | |
2196 | return ret; | |
2197 | ||
e597cd09 | 2198 | pr_info("dropping to old style cdda (sense=%x)\n", cdi->last_sense); |
1da177e4 LT |
2199 | cdi->cdda_method = CDDA_OLD; |
2200 | return cdrom_read_cdda_old(cdi, ubuf, lba, nframes); | |
2201 | } | |
2202 | ||
d2c5d4fc CH |
2203 | static int cdrom_ioctl_multisession(struct cdrom_device_info *cdi, |
2204 | void __user *argp) | |
1da177e4 | 2205 | { |
d2c5d4fc CH |
2206 | struct cdrom_multisession ms_info; |
2207 | u8 requested_format; | |
1da177e4 LT |
2208 | int ret; |
2209 | ||
d2c5d4fc CH |
2210 | cdinfo(CD_DO_IOCTL, "entering CDROMMULTISESSION\n"); |
2211 | ||
2212 | if (!(cdi->ops->capability & CDC_MULTI_SESSION)) | |
2213 | return -ENOSYS; | |
2214 | ||
2215 | if (copy_from_user(&ms_info, argp, sizeof(ms_info))) | |
2216 | return -EFAULT; | |
2217 | ||
2218 | requested_format = ms_info.addr_format; | |
2219 | if (requested_format != CDROM_MSF && requested_format != CDROM_LBA) | |
2220 | return -EINVAL; | |
2221 | ms_info.addr_format = CDROM_LBA; | |
2222 | ||
2223 | ret = cdi->ops->get_last_session(cdi, &ms_info); | |
2224 | if (ret) | |
1da177e4 LT |
2225 | return ret; |
2226 | ||
d2c5d4fc CH |
2227 | sanitize_format(&ms_info.addr, &ms_info.addr_format, requested_format); |
2228 | ||
2229 | if (copy_to_user(argp, &ms_info, sizeof(ms_info))) | |
2230 | return -EFAULT; | |
2231 | ||
2232 | cdinfo(CD_DO_IOCTL, "CDROMMULTISESSION successful\n"); | |
2233 | return 0; | |
2234 | } | |
2235 | ||
2236 | static int cdrom_ioctl_eject(struct cdrom_device_info *cdi) | |
2237 | { | |
2238 | cdinfo(CD_DO_IOCTL, "entering CDROMEJECT\n"); | |
2239 | ||
2240 | if (!CDROM_CAN(CDC_OPEN_TRAY)) | |
2241 | return -ENOSYS; | |
2242 | if (cdi->use_count != 1 || keeplocked) | |
2243 | return -EBUSY; | |
2244 | if (CDROM_CAN(CDC_LOCK)) { | |
2245 | int ret = cdi->ops->lock_door(cdi, 0); | |
2246 | if (ret) | |
1da177e4 | 2247 | return ret; |
d2c5d4fc | 2248 | } |
1da177e4 | 2249 | |
d2c5d4fc CH |
2250 | return cdi->ops->tray_move(cdi, 1); |
2251 | } | |
1da177e4 | 2252 | |
d2c5d4fc CH |
2253 | static int cdrom_ioctl_closetray(struct cdrom_device_info *cdi) |
2254 | { | |
2255 | cdinfo(CD_DO_IOCTL, "entering CDROMCLOSETRAY\n"); | |
1da177e4 | 2256 | |
d2c5d4fc CH |
2257 | if (!CDROM_CAN(CDC_CLOSE_TRAY)) |
2258 | return -ENOSYS; | |
2259 | return cdi->ops->tray_move(cdi, 0); | |
2260 | } | |
1da177e4 | 2261 | |
d2c5d4fc CH |
2262 | static int cdrom_ioctl_eject_sw(struct cdrom_device_info *cdi, |
2263 | unsigned long arg) | |
2264 | { | |
2265 | cdinfo(CD_DO_IOCTL, "entering CDROMEJECT_SW\n"); | |
1da177e4 | 2266 | |
d2c5d4fc CH |
2267 | if (!CDROM_CAN(CDC_OPEN_TRAY)) |
2268 | return -ENOSYS; | |
2269 | if (keeplocked) | |
2270 | return -EBUSY; | |
1da177e4 | 2271 | |
d2c5d4fc CH |
2272 | cdi->options &= ~(CDO_AUTO_CLOSE | CDO_AUTO_EJECT); |
2273 | if (arg) | |
2274 | cdi->options |= CDO_AUTO_CLOSE | CDO_AUTO_EJECT; | |
2275 | return 0; | |
2276 | } | |
1da177e4 | 2277 | |
d2c5d4fc CH |
2278 | static int cdrom_ioctl_media_changed(struct cdrom_device_info *cdi, |
2279 | unsigned long arg) | |
2280 | { | |
2281 | struct cdrom_changer_info *info; | |
2282 | int ret; | |
1da177e4 | 2283 | |
d2c5d4fc | 2284 | cdinfo(CD_DO_IOCTL, "entering CDROM_MEDIA_CHANGED\n"); |
1da177e4 | 2285 | |
d2c5d4fc CH |
2286 | if (!CDROM_CAN(CDC_MEDIA_CHANGED)) |
2287 | return -ENOSYS; | |
1da177e4 | 2288 | |
d2c5d4fc CH |
2289 | /* cannot select disc or select current disc */ |
2290 | if (!CDROM_CAN(CDC_SELECT_DISC) || arg == CDSL_CURRENT) | |
2291 | return media_changed(cdi, 1); | |
1da177e4 | 2292 | |
d2c5d4fc CH |
2293 | if ((unsigned int)arg >= cdi->capacity) |
2294 | return -EINVAL; | |
1da177e4 | 2295 | |
d2c5d4fc CH |
2296 | info = kmalloc(sizeof(*info), GFP_KERNEL); |
2297 | if (!info) | |
2298 | return -ENOMEM; | |
1da177e4 | 2299 | |
d2c5d4fc CH |
2300 | ret = cdrom_read_mech_status(cdi, info); |
2301 | if (!ret) | |
2302 | ret = info->slots[arg].change; | |
2303 | kfree(info); | |
2304 | return ret; | |
2305 | } | |
1da177e4 | 2306 | |
d2c5d4fc CH |
2307 | static int cdrom_ioctl_set_options(struct cdrom_device_info *cdi, |
2308 | unsigned long arg) | |
2309 | { | |
2310 | cdinfo(CD_DO_IOCTL, "entering CDROM_SET_OPTIONS\n"); | |
1da177e4 | 2311 | |
d2c5d4fc CH |
2312 | /* |
2313 | * Options need to be in sync with capability. | |
2314 | * Too late for that, so we have to check each one separately. | |
2315 | */ | |
2316 | switch (arg) { | |
2317 | case CDO_USE_FFLAGS: | |
2318 | case CDO_CHECK_TYPE: | |
2319 | break; | |
2320 | case CDO_LOCK: | |
2321 | if (!CDROM_CAN(CDC_LOCK)) | |
2322 | return -ENOSYS; | |
2323 | break; | |
2324 | case 0: | |
2325 | return cdi->options; | |
2326 | /* default is basically CDO_[AUTO_CLOSE|AUTO_EJECT] */ | |
2327 | default: | |
2328 | if (!CDROM_CAN(arg)) | |
1da177e4 | 2329 | return -ENOSYS; |
d2c5d4fc CH |
2330 | } |
2331 | cdi->options |= (int) arg; | |
2332 | return cdi->options; | |
2333 | } | |
1da177e4 | 2334 | |
d2c5d4fc CH |
2335 | static int cdrom_ioctl_clear_options(struct cdrom_device_info *cdi, |
2336 | unsigned long arg) | |
2337 | { | |
2338 | cdinfo(CD_DO_IOCTL, "entering CDROM_CLEAR_OPTIONS\n"); | |
1da177e4 | 2339 | |
d2c5d4fc CH |
2340 | cdi->options &= ~(int) arg; |
2341 | return cdi->options; | |
2342 | } | |
1da177e4 | 2343 | |
d2c5d4fc CH |
2344 | static int cdrom_ioctl_select_speed(struct cdrom_device_info *cdi, |
2345 | unsigned long arg) | |
2346 | { | |
2347 | cdinfo(CD_DO_IOCTL, "entering CDROM_SELECT_SPEED\n"); | |
1da177e4 | 2348 | |
d2c5d4fc CH |
2349 | if (!CDROM_CAN(CDC_SELECT_SPEED)) |
2350 | return -ENOSYS; | |
2351 | return cdi->ops->select_speed(cdi, arg); | |
2352 | } | |
1da177e4 | 2353 | |
d2c5d4fc CH |
2354 | static int cdrom_ioctl_select_disc(struct cdrom_device_info *cdi, |
2355 | unsigned long arg) | |
2356 | { | |
2357 | cdinfo(CD_DO_IOCTL, "entering CDROM_SELECT_DISC\n"); | |
2358 | ||
2359 | if (!CDROM_CAN(CDC_SELECT_DISC)) | |
2360 | return -ENOSYS; | |
2361 | ||
2362 | if (arg != CDSL_CURRENT && arg != CDSL_NONE) { | |
2363 | if ((int)arg >= cdi->capacity) | |
2364 | return -EINVAL; | |
2365 | } | |
2366 | ||
2367 | /* | |
2368 | * ->select_disc is a hook to allow a driver-specific way of | |
2369 | * seleting disc. However, since there is no equivalent hook for | |
2370 | * cdrom_slot_status this may not actually be useful... | |
2371 | */ | |
2372 | if (cdi->ops->select_disc) | |
2373 | return cdi->ops->select_disc(cdi, arg); | |
2374 | ||
2375 | cdinfo(CD_CHANGER, "Using generic cdrom_select_disc()\n"); | |
2376 | return cdrom_select_disc(cdi, arg); | |
2377 | } | |
2378 | ||
2379 | static int cdrom_ioctl_reset(struct cdrom_device_info *cdi, | |
2380 | struct block_device *bdev) | |
2381 | { | |
2382 | cdinfo(CD_DO_IOCTL, "entering CDROM_RESET\n"); | |
2383 | ||
2384 | if (!capable(CAP_SYS_ADMIN)) | |
2385 | return -EACCES; | |
2386 | if (!CDROM_CAN(CDC_RESET)) | |
2387 | return -ENOSYS; | |
f98393a6 | 2388 | invalidate_bdev(bdev); |
d2c5d4fc CH |
2389 | return cdi->ops->reset(cdi); |
2390 | } | |
2391 | ||
2392 | static int cdrom_ioctl_lock_door(struct cdrom_device_info *cdi, | |
2393 | unsigned long arg) | |
2394 | { | |
2395 | cdinfo(CD_DO_IOCTL, "%socking door.\n", arg ? "L" : "Unl"); | |
2396 | ||
2397 | if (!CDROM_CAN(CDC_LOCK)) | |
2398 | return -EDRIVE_CANT_DO_THIS; | |
2399 | ||
2400 | keeplocked = arg ? 1 : 0; | |
2401 | ||
2402 | /* | |
2403 | * Don't unlock the door on multiple opens by default, but allow | |
2404 | * root to do so. | |
2405 | */ | |
2406 | if (cdi->use_count != 1 && !arg && !capable(CAP_SYS_ADMIN)) | |
2407 | return -EBUSY; | |
2408 | return cdi->ops->lock_door(cdi, arg); | |
2409 | } | |
2410 | ||
2411 | static int cdrom_ioctl_debug(struct cdrom_device_info *cdi, | |
2412 | unsigned long arg) | |
2413 | { | |
2414 | cdinfo(CD_DO_IOCTL, "%sabling debug.\n", arg ? "En" : "Dis"); | |
2415 | ||
2416 | if (!capable(CAP_SYS_ADMIN)) | |
2417 | return -EACCES; | |
2418 | debug = arg ? 1 : 0; | |
2419 | return debug; | |
2420 | } | |
1da177e4 | 2421 | |
d2c5d4fc CH |
2422 | static int cdrom_ioctl_get_capability(struct cdrom_device_info *cdi) |
2423 | { | |
2424 | cdinfo(CD_DO_IOCTL, "entering CDROM_GET_CAPABILITY\n"); | |
2425 | return (cdi->ops->capability & ~cdi->mask); | |
2426 | } | |
2427 | ||
2428 | /* | |
2429 | * The following function is implemented, although very few audio | |
1da177e4 LT |
2430 | * discs give Universal Product Code information, which should just be |
2431 | * the Medium Catalog Number on the box. Note, that the way the code | |
2432 | * is written on the CD is /not/ uniform across all discs! | |
2433 | */ | |
d2c5d4fc CH |
2434 | static int cdrom_ioctl_get_mcn(struct cdrom_device_info *cdi, |
2435 | void __user *argp) | |
2436 | { | |
2437 | struct cdrom_mcn mcn; | |
2438 | int ret; | |
1da177e4 | 2439 | |
d2c5d4fc | 2440 | cdinfo(CD_DO_IOCTL, "entering CDROM_GET_MCN\n"); |
1da177e4 | 2441 | |
d2c5d4fc CH |
2442 | if (!(cdi->ops->capability & CDC_MCN)) |
2443 | return -ENOSYS; | |
2444 | ret = cdi->ops->get_mcn(cdi, &mcn); | |
2445 | if (ret) | |
2446 | return ret; | |
1da177e4 | 2447 | |
d2c5d4fc CH |
2448 | if (copy_to_user(argp, &mcn, sizeof(mcn))) |
2449 | return -EFAULT; | |
2450 | cdinfo(CD_DO_IOCTL, "CDROM_GET_MCN successful\n"); | |
2451 | return 0; | |
2452 | } | |
1da177e4 | 2453 | |
d2c5d4fc CH |
2454 | static int cdrom_ioctl_drive_status(struct cdrom_device_info *cdi, |
2455 | unsigned long arg) | |
2456 | { | |
2457 | cdinfo(CD_DO_IOCTL, "entering CDROM_DRIVE_STATUS\n"); | |
2458 | ||
2459 | if (!(cdi->ops->capability & CDC_DRIVE_STATUS)) | |
2460 | return -ENOSYS; | |
2461 | if (!CDROM_CAN(CDC_SELECT_DISC) || | |
2462 | (arg == CDSL_CURRENT || arg == CDSL_NONE)) | |
2463 | return cdi->ops->drive_status(cdi, CDSL_CURRENT); | |
2464 | if (((int)arg >= cdi->capacity)) | |
2465 | return -EINVAL; | |
2466 | return cdrom_slot_status(cdi, arg); | |
2467 | } | |
2468 | ||
2469 | /* | |
2470 | * Ok, this is where problems start. The current interface for the | |
2471 | * CDROM_DISC_STATUS ioctl is flawed. It makes the false assumption that | |
2472 | * CDs are all CDS_DATA_1 or all CDS_AUDIO, etc. Unfortunatly, while this | |
2473 | * is often the case, it is also very common for CDs to have some tracks | |
2474 | * with data, and some tracks with audio. Just because I feel like it, | |
2475 | * I declare the following to be the best way to cope. If the CD has ANY | |
2476 | * data tracks on it, it will be returned as a data CD. If it has any XA | |
2477 | * tracks, I will return it as that. Now I could simplify this interface | |
2478 | * by combining these returns with the above, but this more clearly | |
2479 | * demonstrates the problem with the current interface. Too bad this | |
2480 | * wasn't designed to use bitmasks... -Erik | |
2481 | * | |
2482 | * Well, now we have the option CDS_MIXED: a mixed-type CD. | |
2483 | * User level programmers might feel the ioctl is not very useful. | |
2484 | * ---david | |
2485 | */ | |
2486 | static int cdrom_ioctl_disc_status(struct cdrom_device_info *cdi) | |
2487 | { | |
2488 | tracktype tracks; | |
2489 | ||
2490 | cdinfo(CD_DO_IOCTL, "entering CDROM_DISC_STATUS\n"); | |
2491 | ||
2492 | cdrom_count_tracks(cdi, &tracks); | |
2493 | if (tracks.error) | |
2494 | return tracks.error; | |
2495 | ||
2496 | /* Policy mode on */ | |
2497 | if (tracks.audio > 0) { | |
2498 | if (!tracks.data && !tracks.cdi && !tracks.xa) | |
2499 | return CDS_AUDIO; | |
2500 | else | |
2501 | return CDS_MIXED; | |
1da177e4 LT |
2502 | } |
2503 | ||
d2c5d4fc CH |
2504 | if (tracks.cdi > 0) |
2505 | return CDS_XA_2_2; | |
2506 | if (tracks.xa > 0) | |
2507 | return CDS_XA_2_1; | |
2508 | if (tracks.data > 0) | |
2509 | return CDS_DATA_1; | |
2510 | /* Policy mode off */ | |
2511 | ||
2512 | cdinfo(CD_WARNING,"This disc doesn't have any tracks I recognize!\n"); | |
2513 | return CDS_NO_INFO; | |
2514 | } | |
2515 | ||
2516 | static int cdrom_ioctl_changer_nslots(struct cdrom_device_info *cdi) | |
2517 | { | |
2518 | cdinfo(CD_DO_IOCTL, "entering CDROM_CHANGER_NSLOTS\n"); | |
2519 | return cdi->capacity; | |
2520 | } | |
2521 | ||
2522 | static int cdrom_ioctl_get_subchnl(struct cdrom_device_info *cdi, | |
2523 | void __user *argp) | |
2524 | { | |
2525 | struct cdrom_subchnl q; | |
2526 | u8 requested, back; | |
2527 | int ret; | |
2528 | ||
2529 | /* cdinfo(CD_DO_IOCTL,"entering CDROMSUBCHNL\n");*/ | |
2530 | ||
d2c5d4fc CH |
2531 | if (copy_from_user(&q, argp, sizeof(q))) |
2532 | return -EFAULT; | |
2533 | ||
2534 | requested = q.cdsc_format; | |
2535 | if (requested != CDROM_MSF && requested != CDROM_LBA) | |
2536 | return -EINVAL; | |
2537 | q.cdsc_format = CDROM_MSF; | |
2538 | ||
2539 | ret = cdi->ops->audio_ioctl(cdi, CDROMSUBCHNL, &q); | |
2540 | if (ret) | |
2541 | return ret; | |
2542 | ||
2543 | back = q.cdsc_format; /* local copy */ | |
2544 | sanitize_format(&q.cdsc_absaddr, &back, requested); | |
2545 | sanitize_format(&q.cdsc_reladdr, &q.cdsc_format, requested); | |
2546 | ||
2547 | if (copy_to_user(argp, &q, sizeof(q))) | |
2548 | return -EFAULT; | |
2549 | /* cdinfo(CD_DO_IOCTL, "CDROMSUBCHNL successful\n"); */ | |
2550 | return 0; | |
2551 | } | |
2552 | ||
2553 | static int cdrom_ioctl_read_tochdr(struct cdrom_device_info *cdi, | |
2554 | void __user *argp) | |
2555 | { | |
2556 | struct cdrom_tochdr header; | |
2557 | int ret; | |
2558 | ||
2559 | /* cdinfo(CD_DO_IOCTL, "entering CDROMREADTOCHDR\n"); */ | |
2560 | ||
d2c5d4fc CH |
2561 | if (copy_from_user(&header, argp, sizeof(header))) |
2562 | return -EFAULT; | |
2563 | ||
2564 | ret = cdi->ops->audio_ioctl(cdi, CDROMREADTOCHDR, &header); | |
2565 | if (ret) | |
2566 | return ret; | |
2567 | ||
2568 | if (copy_to_user(argp, &header, sizeof(header))) | |
2569 | return -EFAULT; | |
2570 | /* cdinfo(CD_DO_IOCTL, "CDROMREADTOCHDR successful\n"); */ | |
2571 | return 0; | |
2572 | } | |
2573 | ||
2574 | static int cdrom_ioctl_read_tocentry(struct cdrom_device_info *cdi, | |
2575 | void __user *argp) | |
2576 | { | |
2577 | struct cdrom_tocentry entry; | |
2578 | u8 requested_format; | |
2579 | int ret; | |
2580 | ||
2581 | /* cdinfo(CD_DO_IOCTL, "entering CDROMREADTOCENTRY\n"); */ | |
2582 | ||
d2c5d4fc CH |
2583 | if (copy_from_user(&entry, argp, sizeof(entry))) |
2584 | return -EFAULT; | |
2585 | ||
2586 | requested_format = entry.cdte_format; | |
2587 | if (requested_format != CDROM_MSF && requested_format != CDROM_LBA) | |
2588 | return -EINVAL; | |
2589 | /* make interface to low-level uniform */ | |
2590 | entry.cdte_format = CDROM_MSF; | |
2591 | ret = cdi->ops->audio_ioctl(cdi, CDROMREADTOCENTRY, &entry); | |
2592 | if (ret) | |
2593 | return ret; | |
2594 | sanitize_format(&entry.cdte_addr, &entry.cdte_format, requested_format); | |
2595 | ||
2596 | if (copy_to_user(argp, &entry, sizeof(entry))) | |
2597 | return -EFAULT; | |
2598 | /* cdinfo(CD_DO_IOCTL, "CDROMREADTOCENTRY successful\n"); */ | |
2599 | return 0; | |
2600 | } | |
2601 | ||
2602 | static int cdrom_ioctl_play_msf(struct cdrom_device_info *cdi, | |
2603 | void __user *argp) | |
2604 | { | |
2605 | struct cdrom_msf msf; | |
2606 | ||
2607 | cdinfo(CD_DO_IOCTL, "entering CDROMPLAYMSF\n"); | |
2608 | ||
2609 | if (!CDROM_CAN(CDC_PLAY_AUDIO)) | |
2610 | return -ENOSYS; | |
2611 | if (copy_from_user(&msf, argp, sizeof(msf))) | |
2612 | return -EFAULT; | |
2613 | return cdi->ops->audio_ioctl(cdi, CDROMPLAYMSF, &msf); | |
2614 | } | |
2615 | ||
2616 | static int cdrom_ioctl_play_trkind(struct cdrom_device_info *cdi, | |
2617 | void __user *argp) | |
2618 | { | |
2619 | struct cdrom_ti ti; | |
2620 | int ret; | |
2621 | ||
2622 | cdinfo(CD_DO_IOCTL, "entering CDROMPLAYTRKIND\n"); | |
2623 | ||
2624 | if (!CDROM_CAN(CDC_PLAY_AUDIO)) | |
2625 | return -ENOSYS; | |
2626 | if (copy_from_user(&ti, argp, sizeof(ti))) | |
2627 | return -EFAULT; | |
2628 | ||
2629 | ret = check_for_audio_disc(cdi, cdi->ops); | |
2630 | if (ret) | |
2631 | return ret; | |
2632 | return cdi->ops->audio_ioctl(cdi, CDROMPLAYTRKIND, &ti); | |
2633 | } | |
2634 | static int cdrom_ioctl_volctrl(struct cdrom_device_info *cdi, | |
2635 | void __user *argp) | |
2636 | { | |
2637 | struct cdrom_volctrl volume; | |
2638 | ||
2639 | cdinfo(CD_DO_IOCTL, "entering CDROMVOLCTRL\n"); | |
2640 | ||
2641 | if (!CDROM_CAN(CDC_PLAY_AUDIO)) | |
2642 | return -ENOSYS; | |
2643 | if (copy_from_user(&volume, argp, sizeof(volume))) | |
2644 | return -EFAULT; | |
2645 | return cdi->ops->audio_ioctl(cdi, CDROMVOLCTRL, &volume); | |
2646 | } | |
2647 | ||
2648 | static int cdrom_ioctl_volread(struct cdrom_device_info *cdi, | |
2649 | void __user *argp) | |
2650 | { | |
2651 | struct cdrom_volctrl volume; | |
2652 | int ret; | |
2653 | ||
2654 | cdinfo(CD_DO_IOCTL, "entering CDROMVOLREAD\n"); | |
2655 | ||
2656 | if (!CDROM_CAN(CDC_PLAY_AUDIO)) | |
2657 | return -ENOSYS; | |
2658 | ||
2659 | ret = cdi->ops->audio_ioctl(cdi, CDROMVOLREAD, &volume); | |
2660 | if (ret) | |
2661 | return ret; | |
2662 | ||
2663 | if (copy_to_user(argp, &volume, sizeof(volume))) | |
2664 | return -EFAULT; | |
2665 | return 0; | |
2666 | } | |
2667 | ||
2668 | static int cdrom_ioctl_audioctl(struct cdrom_device_info *cdi, | |
2669 | unsigned int cmd) | |
2670 | { | |
2671 | int ret; | |
2672 | ||
2673 | cdinfo(CD_DO_IOCTL, "doing audio ioctl (start/stop/pause/resume)\n"); | |
2674 | ||
2675 | if (!CDROM_CAN(CDC_PLAY_AUDIO)) | |
2676 | return -ENOSYS; | |
2677 | ret = check_for_audio_disc(cdi, cdi->ops); | |
2678 | if (ret) | |
2679 | return ret; | |
2680 | return cdi->ops->audio_ioctl(cdi, cmd, NULL); | |
2681 | } | |
2682 | ||
2683 | /* | |
2684 | * Just about every imaginable ioctl is supported in the Uniform layer | |
2685 | * these days. | |
2686 | * ATAPI / SCSI specific code now mainly resides in mmc_ioctl(). | |
2687 | */ | |
bbc1cc97 AV |
2688 | int cdrom_ioctl(struct cdrom_device_info *cdi, struct block_device *bdev, |
2689 | fmode_t mode, unsigned int cmd, unsigned long arg) | |
d2c5d4fc CH |
2690 | { |
2691 | void __user *argp = (void __user *)arg; | |
2692 | int ret; | |
bbc1cc97 | 2693 | struct gendisk *disk = bdev->bd_disk; |
d2c5d4fc CH |
2694 | |
2695 | /* | |
2696 | * Try the generic SCSI command ioctl's first. | |
2697 | */ | |
bbc1cc97 | 2698 | ret = scsi_cmd_ioctl(disk->queue, disk, mode, cmd, argp); |
d2c5d4fc CH |
2699 | if (ret != -ENOTTY) |
2700 | return ret; | |
2701 | ||
2702 | switch (cmd) { | |
2703 | case CDROMMULTISESSION: | |
2704 | return cdrom_ioctl_multisession(cdi, argp); | |
2705 | case CDROMEJECT: | |
2706 | return cdrom_ioctl_eject(cdi); | |
2707 | case CDROMCLOSETRAY: | |
2708 | return cdrom_ioctl_closetray(cdi); | |
2709 | case CDROMEJECT_SW: | |
2710 | return cdrom_ioctl_eject_sw(cdi, arg); | |
2711 | case CDROM_MEDIA_CHANGED: | |
2712 | return cdrom_ioctl_media_changed(cdi, arg); | |
2713 | case CDROM_SET_OPTIONS: | |
2714 | return cdrom_ioctl_set_options(cdi, arg); | |
2715 | case CDROM_CLEAR_OPTIONS: | |
2716 | return cdrom_ioctl_clear_options(cdi, arg); | |
2717 | case CDROM_SELECT_SPEED: | |
2718 | return cdrom_ioctl_select_speed(cdi, arg); | |
2719 | case CDROM_SELECT_DISC: | |
2720 | return cdrom_ioctl_select_disc(cdi, arg); | |
2721 | case CDROMRESET: | |
bbc1cc97 | 2722 | return cdrom_ioctl_reset(cdi, bdev); |
d2c5d4fc CH |
2723 | case CDROM_LOCKDOOR: |
2724 | return cdrom_ioctl_lock_door(cdi, arg); | |
2725 | case CDROM_DEBUG: | |
2726 | return cdrom_ioctl_debug(cdi, arg); | |
2727 | case CDROM_GET_CAPABILITY: | |
2728 | return cdrom_ioctl_get_capability(cdi); | |
2729 | case CDROM_GET_MCN: | |
2730 | return cdrom_ioctl_get_mcn(cdi, argp); | |
2731 | case CDROM_DRIVE_STATUS: | |
2732 | return cdrom_ioctl_drive_status(cdi, arg); | |
2733 | case CDROM_DISC_STATUS: | |
2734 | return cdrom_ioctl_disc_status(cdi); | |
2735 | case CDROM_CHANGER_NSLOTS: | |
2736 | return cdrom_ioctl_changer_nslots(cdi); | |
2737 | } | |
2738 | ||
2739 | /* | |
2740 | * Use the ioctls that are implemented through the generic_packet() | |
2741 | * interface. this may look at bit funny, but if -ENOTTY is | |
2742 | * returned that particular ioctl is not implemented and we | |
2743 | * let it go through the device specific ones. | |
2744 | */ | |
1da177e4 LT |
2745 | if (CDROM_CAN(CDC_GENERIC_PACKET)) { |
2746 | ret = mmc_ioctl(cdi, cmd, arg); | |
d2c5d4fc | 2747 | if (ret != -ENOTTY) |
1da177e4 | 2748 | return ret; |
1da177e4 LT |
2749 | } |
2750 | ||
d2c5d4fc CH |
2751 | /* |
2752 | * Note: most of the cdinfo() calls are commented out here, | |
2753 | * because they fill up the sys log when CD players poll | |
2754 | * the drive. | |
2755 | */ | |
1da177e4 | 2756 | switch (cmd) { |
d2c5d4fc CH |
2757 | case CDROMSUBCHNL: |
2758 | return cdrom_ioctl_get_subchnl(cdi, argp); | |
2759 | case CDROMREADTOCHDR: | |
2760 | return cdrom_ioctl_read_tochdr(cdi, argp); | |
2761 | case CDROMREADTOCENTRY: | |
2762 | return cdrom_ioctl_read_tocentry(cdi, argp); | |
2763 | case CDROMPLAYMSF: | |
2764 | return cdrom_ioctl_play_msf(cdi, argp); | |
2765 | case CDROMPLAYTRKIND: | |
2766 | return cdrom_ioctl_play_trkind(cdi, argp); | |
2767 | case CDROMVOLCTRL: | |
2768 | return cdrom_ioctl_volctrl(cdi, argp); | |
2769 | case CDROMVOLREAD: | |
2770 | return cdrom_ioctl_volread(cdi, argp); | |
1da177e4 LT |
2771 | case CDROMSTART: |
2772 | case CDROMSTOP: | |
2773 | case CDROMPAUSE: | |
d2c5d4fc CH |
2774 | case CDROMRESUME: |
2775 | return cdrom_ioctl_audioctl(cdi, cmd); | |
2776 | } | |
1da177e4 | 2777 | |
1da177e4 LT |
2778 | return -ENOSYS; |
2779 | } | |
2780 | ||
1da177e4 LT |
2781 | /* |
2782 | * Required when we need to use READ_10 to issue other than 2048 block | |
2783 | * reads | |
2784 | */ | |
2785 | static int cdrom_switch_blocksize(struct cdrom_device_info *cdi, int size) | |
2786 | { | |
2787 | struct cdrom_device_ops *cdo = cdi->ops; | |
2788 | struct packet_command cgc; | |
2789 | struct modesel_head mh; | |
2790 | ||
2791 | memset(&mh, 0, sizeof(mh)); | |
2792 | mh.block_desc_length = 0x08; | |
2793 | mh.block_length_med = (size >> 8) & 0xff; | |
2794 | mh.block_length_lo = size & 0xff; | |
2795 | ||
2796 | memset(&cgc, 0, sizeof(cgc)); | |
2797 | cgc.cmd[0] = 0x15; | |
2798 | cgc.cmd[1] = 1 << 4; | |
2799 | cgc.cmd[4] = 12; | |
2800 | cgc.buflen = sizeof(mh); | |
2801 | cgc.buffer = (char *) &mh; | |
2802 | cgc.data_direction = CGC_DATA_WRITE; | |
2803 | mh.block_desc_length = 0x08; | |
2804 | mh.block_length_med = (size >> 8) & 0xff; | |
2805 | mh.block_length_lo = size & 0xff; | |
2806 | ||
2807 | return cdo->generic_packet(cdi, &cgc); | |
2808 | } | |
2809 | ||
3147c531 MS |
2810 | static noinline int mmc_ioctl_cdrom_read_data(struct cdrom_device_info *cdi, |
2811 | void __user *arg, | |
2812 | struct packet_command *cgc, | |
2813 | int cmd) | |
2814 | { | |
1da177e4 | 2815 | struct request_sense sense; |
3147c531 MS |
2816 | struct cdrom_msf msf; |
2817 | int blocksize = 0, format = 0, lba; | |
2818 | int ret; | |
1da177e4 | 2819 | |
1da177e4 LT |
2820 | switch (cmd) { |
2821 | case CDROMREADRAW: | |
3147c531 MS |
2822 | blocksize = CD_FRAMESIZE_RAW; |
2823 | break; | |
1da177e4 | 2824 | case CDROMREADMODE1: |
3147c531 MS |
2825 | blocksize = CD_FRAMESIZE; |
2826 | format = 2; | |
2827 | break; | |
2828 | case CDROMREADMODE2: | |
2829 | blocksize = CD_FRAMESIZE_RAW0; | |
2830 | break; | |
2831 | } | |
2832 | IOCTL_IN(arg, struct cdrom_msf, msf); | |
2833 | lba = msf_to_lba(msf.cdmsf_min0, msf.cdmsf_sec0, msf.cdmsf_frame0); | |
2834 | /* FIXME: we need upper bound checking, too!! */ | |
2835 | if (lba < 0) | |
2836 | return -EINVAL; | |
2837 | ||
2838 | cgc->buffer = kmalloc(blocksize, GFP_KERNEL); | |
2839 | if (cgc->buffer == NULL) | |
2840 | return -ENOMEM; | |
2841 | ||
2842 | memset(&sense, 0, sizeof(sense)); | |
2843 | cgc->sense = &sense; | |
2844 | cgc->data_direction = CGC_DATA_READ; | |
2845 | ret = cdrom_read_block(cdi, cgc, lba, 1, format, blocksize); | |
2846 | if (ret && sense.sense_key == 0x05 && | |
2847 | sense.asc == 0x20 && | |
2848 | sense.ascq == 0x00) { | |
2849 | /* | |
2850 | * SCSI-II devices are not required to support | |
2851 | * READ_CD, so let's try switching block size | |
2852 | */ | |
2853 | /* FIXME: switch back again... */ | |
2854 | ret = cdrom_switch_blocksize(cdi, blocksize); | |
2855 | if (ret) | |
2856 | goto out; | |
2857 | cgc->sense = NULL; | |
2858 | ret = cdrom_read_cd(cdi, cgc, lba, blocksize, 1); | |
2859 | ret |= cdrom_switch_blocksize(cdi, blocksize); | |
2860 | } | |
2861 | if (!ret && copy_to_user(arg, cgc->buffer, blocksize)) | |
2862 | ret = -EFAULT; | |
2863 | out: | |
2864 | kfree(cgc->buffer); | |
2865 | return ret; | |
2866 | } | |
2867 | ||
2868 | static noinline int mmc_ioctl_cdrom_read_audio(struct cdrom_device_info *cdi, | |
2869 | void __user *arg) | |
2870 | { | |
2871 | struct cdrom_read_audio ra; | |
2872 | int lba; | |
2873 | ||
2874 | IOCTL_IN(arg, struct cdrom_read_audio, ra); | |
2875 | ||
2876 | if (ra.addr_format == CDROM_MSF) | |
2877 | lba = msf_to_lba(ra.addr.msf.minute, | |
2878 | ra.addr.msf.second, | |
2879 | ra.addr.msf.frame); | |
2880 | else if (ra.addr_format == CDROM_LBA) | |
2881 | lba = ra.addr.lba; | |
2882 | else | |
2883 | return -EINVAL; | |
2884 | ||
2885 | /* FIXME: we need upper bound checking, too!! */ | |
2886 | if (lba < 0 || ra.nframes <= 0 || ra.nframes > CD_FRAMES) | |
2887 | return -EINVAL; | |
2888 | ||
2889 | return cdrom_read_cdda(cdi, ra.buf, lba, ra.nframes); | |
2890 | } | |
2891 | ||
2892 | static noinline int mmc_ioctl_cdrom_subchannel(struct cdrom_device_info *cdi, | |
2893 | void __user *arg) | |
2894 | { | |
2895 | int ret; | |
2896 | struct cdrom_subchnl q; | |
2897 | u_char requested, back; | |
2898 | IOCTL_IN(arg, struct cdrom_subchnl, q); | |
2899 | requested = q.cdsc_format; | |
2900 | if (!((requested == CDROM_MSF) || | |
2901 | (requested == CDROM_LBA))) | |
2902 | return -EINVAL; | |
2903 | q.cdsc_format = CDROM_MSF; | |
2904 | ret = cdrom_read_subchannel(cdi, &q, 0); | |
2905 | if (ret) | |
1da177e4 | 2906 | return ret; |
3147c531 MS |
2907 | back = q.cdsc_format; /* local copy */ |
2908 | sanitize_format(&q.cdsc_absaddr, &back, requested); | |
2909 | sanitize_format(&q.cdsc_reladdr, &q.cdsc_format, requested); | |
2910 | IOCTL_OUT(arg, struct cdrom_subchnl, q); | |
2911 | /* cdinfo(CD_DO_IOCTL, "CDROMSUBCHNL successful\n"); */ | |
2912 | return 0; | |
2913 | } | |
1da177e4 | 2914 | |
3147c531 MS |
2915 | static noinline int mmc_ioctl_cdrom_play_msf(struct cdrom_device_info *cdi, |
2916 | void __user *arg, | |
2917 | struct packet_command *cgc) | |
2918 | { | |
2919 | struct cdrom_device_ops *cdo = cdi->ops; | |
2920 | struct cdrom_msf msf; | |
2921 | cdinfo(CD_DO_IOCTL, "entering CDROMPLAYMSF\n"); | |
2922 | IOCTL_IN(arg, struct cdrom_msf, msf); | |
2923 | cgc->cmd[0] = GPCMD_PLAY_AUDIO_MSF; | |
2924 | cgc->cmd[3] = msf.cdmsf_min0; | |
2925 | cgc->cmd[4] = msf.cdmsf_sec0; | |
2926 | cgc->cmd[5] = msf.cdmsf_frame0; | |
2927 | cgc->cmd[6] = msf.cdmsf_min1; | |
2928 | cgc->cmd[7] = msf.cdmsf_sec1; | |
2929 | cgc->cmd[8] = msf.cdmsf_frame1; | |
2930 | cgc->data_direction = CGC_DATA_NONE; | |
2931 | return cdo->generic_packet(cdi, cgc); | |
2932 | } | |
1da177e4 | 2933 | |
3147c531 MS |
2934 | static noinline int mmc_ioctl_cdrom_play_blk(struct cdrom_device_info *cdi, |
2935 | void __user *arg, | |
2936 | struct packet_command *cgc) | |
2937 | { | |
2938 | struct cdrom_device_ops *cdo = cdi->ops; | |
2939 | struct cdrom_blk blk; | |
2940 | cdinfo(CD_DO_IOCTL, "entering CDROMPLAYBLK\n"); | |
2941 | IOCTL_IN(arg, struct cdrom_blk, blk); | |
2942 | cgc->cmd[0] = GPCMD_PLAY_AUDIO_10; | |
2943 | cgc->cmd[2] = (blk.from >> 24) & 0xff; | |
2944 | cgc->cmd[3] = (blk.from >> 16) & 0xff; | |
2945 | cgc->cmd[4] = (blk.from >> 8) & 0xff; | |
2946 | cgc->cmd[5] = blk.from & 0xff; | |
2947 | cgc->cmd[7] = (blk.len >> 8) & 0xff; | |
2948 | cgc->cmd[8] = blk.len & 0xff; | |
2949 | cgc->data_direction = CGC_DATA_NONE; | |
2950 | return cdo->generic_packet(cdi, cgc); | |
2951 | } | |
1da177e4 | 2952 | |
3147c531 MS |
2953 | static noinline int mmc_ioctl_cdrom_volume(struct cdrom_device_info *cdi, |
2954 | void __user *arg, | |
2955 | struct packet_command *cgc, | |
2956 | unsigned int cmd) | |
2957 | { | |
2958 | struct cdrom_volctrl volctrl; | |
2959 | unsigned char buffer[32]; | |
2960 | char mask[sizeof(buffer)]; | |
2961 | unsigned short offset; | |
2962 | int ret; | |
2963 | ||
2964 | cdinfo(CD_DO_IOCTL, "entering CDROMVOLUME\n"); | |
1da177e4 | 2965 | |
3147c531 | 2966 | IOCTL_IN(arg, struct cdrom_volctrl, volctrl); |
1da177e4 | 2967 | |
3147c531 MS |
2968 | cgc->buffer = buffer; |
2969 | cgc->buflen = 24; | |
2970 | ret = cdrom_mode_sense(cdi, cgc, GPMODE_AUDIO_CTL_PAGE, 0); | |
2971 | if (ret) | |
2972 | return ret; | |
1da177e4 | 2973 | |
3147c531 MS |
2974 | /* originally the code depended on buffer[1] to determine |
2975 | how much data is available for transfer. buffer[1] is | |
2976 | unfortunately ambigious and the only reliable way seem | |
2977 | to be to simply skip over the block descriptor... */ | |
2978 | offset = 8 + be16_to_cpu(*(__be16 *)(buffer + 6)); | |
2979 | ||
2980 | if (offset + 16 > sizeof(buffer)) | |
2981 | return -E2BIG; | |
2982 | ||
2983 | if (offset + 16 > cgc->buflen) { | |
2984 | cgc->buflen = offset + 16; | |
2985 | ret = cdrom_mode_sense(cdi, cgc, | |
2986 | GPMODE_AUDIO_CTL_PAGE, 0); | |
2987 | if (ret) | |
2988 | return ret; | |
2989 | } | |
1da177e4 | 2990 | |
3147c531 MS |
2991 | /* sanity check */ |
2992 | if ((buffer[offset] & 0x3f) != GPMODE_AUDIO_CTL_PAGE || | |
2993 | buffer[offset + 1] < 14) | |
2994 | return -EINVAL; | |
1da177e4 | 2995 | |
3147c531 MS |
2996 | /* now we have the current volume settings. if it was only |
2997 | a CDROMVOLREAD, return these values */ | |
2998 | if (cmd == CDROMVOLREAD) { | |
2999 | volctrl.channel0 = buffer[offset+9]; | |
3000 | volctrl.channel1 = buffer[offset+11]; | |
3001 | volctrl.channel2 = buffer[offset+13]; | |
3002 | volctrl.channel3 = buffer[offset+15]; | |
3003 | IOCTL_OUT(arg, struct cdrom_volctrl, volctrl); | |
3004 | return 0; | |
3005 | } | |
1da177e4 | 3006 | |
3147c531 MS |
3007 | /* get the volume mask */ |
3008 | cgc->buffer = mask; | |
3009 | ret = cdrom_mode_sense(cdi, cgc, GPMODE_AUDIO_CTL_PAGE, 1); | |
3010 | if (ret) | |
3011 | return ret; | |
1da177e4 | 3012 | |
3147c531 MS |
3013 | buffer[offset + 9] = volctrl.channel0 & mask[offset + 9]; |
3014 | buffer[offset + 11] = volctrl.channel1 & mask[offset + 11]; | |
3015 | buffer[offset + 13] = volctrl.channel2 & mask[offset + 13]; | |
3016 | buffer[offset + 15] = volctrl.channel3 & mask[offset + 15]; | |
1da177e4 | 3017 | |
3147c531 MS |
3018 | /* set volume */ |
3019 | cgc->buffer = buffer + offset - 8; | |
3020 | memset(cgc->buffer, 0, 8); | |
3021 | return cdrom_mode_select(cdi, cgc); | |
3022 | } | |
1da177e4 | 3023 | |
3147c531 MS |
3024 | static noinline int mmc_ioctl_cdrom_start_stop(struct cdrom_device_info *cdi, |
3025 | struct packet_command *cgc, | |
3026 | int cmd) | |
3027 | { | |
3028 | struct cdrom_device_ops *cdo = cdi->ops; | |
3029 | cdinfo(CD_DO_IOCTL, "entering CDROMSTART/CDROMSTOP\n"); | |
3030 | cgc->cmd[0] = GPCMD_START_STOP_UNIT; | |
3031 | cgc->cmd[1] = 1; | |
3032 | cgc->cmd[4] = (cmd == CDROMSTART) ? 1 : 0; | |
3033 | cgc->data_direction = CGC_DATA_NONE; | |
3034 | return cdo->generic_packet(cdi, cgc); | |
3035 | } | |
1da177e4 | 3036 | |
3147c531 MS |
3037 | static noinline int mmc_ioctl_cdrom_pause_resume(struct cdrom_device_info *cdi, |
3038 | struct packet_command *cgc, | |
3039 | int cmd) | |
3040 | { | |
3041 | struct cdrom_device_ops *cdo = cdi->ops; | |
3042 | cdinfo(CD_DO_IOCTL, "entering CDROMPAUSE/CDROMRESUME\n"); | |
3043 | cgc->cmd[0] = GPCMD_PAUSE_RESUME; | |
3044 | cgc->cmd[8] = (cmd == CDROMRESUME) ? 1 : 0; | |
3045 | cgc->data_direction = CGC_DATA_NONE; | |
3046 | return cdo->generic_packet(cdi, cgc); | |
3047 | } | |
1da177e4 | 3048 | |
3147c531 | 3049 | static noinline int mmc_ioctl_dvd_read_struct(struct cdrom_device_info *cdi, |
d194139c MS |
3050 | void __user *arg, |
3051 | struct packet_command *cgc) | |
3147c531 MS |
3052 | { |
3053 | int ret; | |
3054 | dvd_struct *s; | |
3055 | int size = sizeof(dvd_struct); | |
3056 | ||
3057 | if (!CDROM_CAN(CDC_DVD)) | |
3058 | return -ENOSYS; | |
3059 | ||
3060 | s = kmalloc(size, GFP_KERNEL); | |
3061 | if (!s) | |
3062 | return -ENOMEM; | |
3063 | ||
3064 | cdinfo(CD_DO_IOCTL, "entering DVD_READ_STRUCT\n"); | |
3065 | if (copy_from_user(s, arg, size)) { | |
1da177e4 | 3066 | kfree(s); |
3147c531 MS |
3067 | return -EFAULT; |
3068 | } | |
3069 | ||
d194139c | 3070 | ret = dvd_read_struct(cdi, s, cgc); |
3147c531 MS |
3071 | if (ret) |
3072 | goto out; | |
3073 | ||
3074 | if (copy_to_user(arg, s, size)) | |
3075 | ret = -EFAULT; | |
3076 | out: | |
3077 | kfree(s); | |
3078 | return ret; | |
3079 | } | |
3080 | ||
3081 | static noinline int mmc_ioctl_dvd_auth(struct cdrom_device_info *cdi, | |
3082 | void __user *arg) | |
3083 | { | |
3084 | int ret; | |
3085 | dvd_authinfo ai; | |
3086 | if (!CDROM_CAN(CDC_DVD)) | |
3087 | return -ENOSYS; | |
3088 | cdinfo(CD_DO_IOCTL, "entering DVD_AUTH\n"); | |
3089 | IOCTL_IN(arg, dvd_authinfo, ai); | |
3090 | ret = dvd_do_auth(cdi, &ai); | |
3091 | if (ret) | |
1da177e4 | 3092 | return ret; |
3147c531 MS |
3093 | IOCTL_OUT(arg, dvd_authinfo, ai); |
3094 | return 0; | |
3095 | } | |
1da177e4 | 3096 | |
3147c531 MS |
3097 | static noinline int mmc_ioctl_cdrom_next_writable(struct cdrom_device_info *cdi, |
3098 | void __user *arg) | |
3099 | { | |
3100 | int ret; | |
3101 | long next = 0; | |
3102 | cdinfo(CD_DO_IOCTL, "entering CDROM_NEXT_WRITABLE\n"); | |
3103 | ret = cdrom_get_next_writable(cdi, &next); | |
3104 | if (ret) | |
3105 | return ret; | |
3106 | IOCTL_OUT(arg, long, next); | |
3107 | return 0; | |
3108 | } | |
1da177e4 | 3109 | |
3147c531 MS |
3110 | static noinline int mmc_ioctl_cdrom_last_written(struct cdrom_device_info *cdi, |
3111 | void __user *arg) | |
3112 | { | |
3113 | int ret; | |
3114 | long last = 0; | |
3115 | cdinfo(CD_DO_IOCTL, "entering CDROM_LAST_WRITTEN\n"); | |
3116 | ret = cdrom_get_last_written(cdi, &last); | |
3117 | if (ret) | |
3118 | return ret; | |
3119 | IOCTL_OUT(arg, long, last); | |
3120 | return 0; | |
3121 | } | |
3122 | ||
3123 | static int mmc_ioctl(struct cdrom_device_info *cdi, unsigned int cmd, | |
3124 | unsigned long arg) | |
3125 | { | |
3126 | struct packet_command cgc; | |
3127 | void __user *userptr = (void __user *)arg; | |
3128 | ||
3129 | memset(&cgc, 0, sizeof(cgc)); | |
3130 | ||
3131 | /* build a unified command and queue it through | |
3132 | cdo->generic_packet() */ | |
3133 | switch (cmd) { | |
3134 | case CDROMREADRAW: | |
3135 | case CDROMREADMODE1: | |
3136 | case CDROMREADMODE2: | |
3137 | return mmc_ioctl_cdrom_read_data(cdi, userptr, &cgc, cmd); | |
3138 | case CDROMREADAUDIO: | |
3139 | return mmc_ioctl_cdrom_read_audio(cdi, userptr); | |
3140 | case CDROMSUBCHNL: | |
3141 | return mmc_ioctl_cdrom_subchannel(cdi, userptr); | |
3142 | case CDROMPLAYMSF: | |
3143 | return mmc_ioctl_cdrom_play_msf(cdi, userptr, &cgc); | |
3144 | case CDROMPLAYBLK: | |
3145 | return mmc_ioctl_cdrom_play_blk(cdi, userptr, &cgc); | |
3146 | case CDROMVOLCTRL: | |
3147 | case CDROMVOLREAD: | |
3148 | return mmc_ioctl_cdrom_volume(cdi, userptr, &cgc, cmd); | |
3149 | case CDROMSTART: | |
3150 | case CDROMSTOP: | |
3151 | return mmc_ioctl_cdrom_start_stop(cdi, &cgc, cmd); | |
3152 | case CDROMPAUSE: | |
3153 | case CDROMRESUME: | |
3154 | return mmc_ioctl_cdrom_pause_resume(cdi, &cgc, cmd); | |
3155 | case DVD_READ_STRUCT: | |
d194139c | 3156 | return mmc_ioctl_dvd_read_struct(cdi, userptr, &cgc); |
3147c531 MS |
3157 | case DVD_AUTH: |
3158 | return mmc_ioctl_dvd_auth(cdi, userptr); | |
3159 | case CDROM_NEXT_WRITABLE: | |
3160 | return mmc_ioctl_cdrom_next_writable(cdi, userptr); | |
3161 | case CDROM_LAST_WRITTEN: | |
3162 | return mmc_ioctl_cdrom_last_written(cdi, userptr); | |
3163 | } | |
1da177e4 LT |
3164 | |
3165 | return -ENOTTY; | |
3166 | } | |
3167 | ||
3168 | static int cdrom_get_track_info(struct cdrom_device_info *cdi, __u16 track, __u8 type, | |
3169 | track_information *ti) | |
3170 | { | |
3171 | struct cdrom_device_ops *cdo = cdi->ops; | |
3172 | struct packet_command cgc; | |
3173 | int ret, buflen; | |
3174 | ||
3175 | init_cdrom_command(&cgc, ti, 8, CGC_DATA_READ); | |
3176 | cgc.cmd[0] = GPCMD_READ_TRACK_RZONE_INFO; | |
3177 | cgc.cmd[1] = type & 3; | |
3178 | cgc.cmd[4] = (track & 0xff00) >> 8; | |
3179 | cgc.cmd[5] = track & 0xff; | |
3180 | cgc.cmd[8] = 8; | |
3181 | cgc.quiet = 1; | |
3182 | ||
3183 | if ((ret = cdo->generic_packet(cdi, &cgc))) | |
3184 | return ret; | |
3185 | ||
3186 | buflen = be16_to_cpu(ti->track_information_length) + | |
3187 | sizeof(ti->track_information_length); | |
3188 | ||
3189 | if (buflen > sizeof(track_information)) | |
3190 | buflen = sizeof(track_information); | |
3191 | ||
3192 | cgc.cmd[8] = cgc.buflen = buflen; | |
3193 | if ((ret = cdo->generic_packet(cdi, &cgc))) | |
3194 | return ret; | |
3195 | ||
3196 | /* return actual fill size */ | |
3197 | return buflen; | |
3198 | } | |
3199 | ||
3200 | /* requires CD R/RW */ | |
3201 | static int cdrom_get_disc_info(struct cdrom_device_info *cdi, disc_information *di) | |
3202 | { | |
3203 | struct cdrom_device_ops *cdo = cdi->ops; | |
3204 | struct packet_command cgc; | |
3205 | int ret, buflen; | |
3206 | ||
3207 | /* set up command and get the disc info */ | |
3208 | init_cdrom_command(&cgc, di, sizeof(*di), CGC_DATA_READ); | |
3209 | cgc.cmd[0] = GPCMD_READ_DISC_INFO; | |
3210 | cgc.cmd[8] = cgc.buflen = 2; | |
3211 | cgc.quiet = 1; | |
3212 | ||
3213 | if ((ret = cdo->generic_packet(cdi, &cgc))) | |
3214 | return ret; | |
3215 | ||
3216 | /* not all drives have the same disc_info length, so requeue | |
3217 | * packet with the length the drive tells us it can supply | |
3218 | */ | |
3219 | buflen = be16_to_cpu(di->disc_information_length) + | |
3220 | sizeof(di->disc_information_length); | |
3221 | ||
3222 | if (buflen > sizeof(disc_information)) | |
3223 | buflen = sizeof(disc_information); | |
3224 | ||
3225 | cgc.cmd[8] = cgc.buflen = buflen; | |
3226 | if ((ret = cdo->generic_packet(cdi, &cgc))) | |
3227 | return ret; | |
3228 | ||
3229 | /* return actual fill size */ | |
3230 | return buflen; | |
3231 | } | |
3232 | ||
3233 | /* return the last written block on the CD-R media. this is for the udf | |
3234 | file system. */ | |
3235 | int cdrom_get_last_written(struct cdrom_device_info *cdi, long *last_written) | |
3236 | { | |
3237 | struct cdrom_tocentry toc; | |
3238 | disc_information di; | |
3239 | track_information ti; | |
3240 | __u32 last_track; | |
3241 | int ret = -1, ti_size; | |
3242 | ||
3243 | if (!CDROM_CAN(CDC_GENERIC_PACKET)) | |
3244 | goto use_toc; | |
3245 | ||
3246 | ret = cdrom_get_disc_info(cdi, &di); | |
3247 | if (ret < (int)(offsetof(typeof(di), last_track_lsb) | |
3248 | + sizeof(di.last_track_lsb))) | |
3249 | goto use_toc; | |
3250 | ||
3251 | /* if unit didn't return msb, it's zeroed by cdrom_get_disc_info */ | |
3252 | last_track = (di.last_track_msb << 8) | di.last_track_lsb; | |
3253 | ti_size = cdrom_get_track_info(cdi, last_track, 1, &ti); | |
3254 | if (ti_size < (int)offsetof(typeof(ti), track_start)) | |
3255 | goto use_toc; | |
3256 | ||
3257 | /* if this track is blank, try the previous. */ | |
3258 | if (ti.blank) { | |
3259 | if (last_track==1) | |
3260 | goto use_toc; | |
3261 | last_track--; | |
3262 | ti_size = cdrom_get_track_info(cdi, last_track, 1, &ti); | |
3263 | } | |
3264 | ||
3265 | if (ti_size < (int)(offsetof(typeof(ti), track_size) | |
3266 | + sizeof(ti.track_size))) | |
3267 | goto use_toc; | |
3268 | ||
3269 | /* if last recorded field is valid, return it. */ | |
3270 | if (ti.lra_v && ti_size >= (int)(offsetof(typeof(ti), last_rec_address) | |
3271 | + sizeof(ti.last_rec_address))) { | |
3272 | *last_written = be32_to_cpu(ti.last_rec_address); | |
3273 | } else { | |
3274 | /* make it up instead */ | |
3275 | *last_written = be32_to_cpu(ti.track_start) + | |
3276 | be32_to_cpu(ti.track_size); | |
3277 | if (ti.free_blocks) | |
3278 | *last_written -= (be32_to_cpu(ti.free_blocks) + 7); | |
3279 | } | |
3280 | return 0; | |
3281 | ||
3282 | /* this is where we end up if the drive either can't do a | |
3283 | GPCMD_READ_DISC_INFO or GPCMD_READ_TRACK_RZONE_INFO or if | |
3284 | it doesn't give enough information or fails. then we return | |
3285 | the toc contents. */ | |
3286 | use_toc: | |
3287 | toc.cdte_format = CDROM_MSF; | |
3288 | toc.cdte_track = CDROM_LEADOUT; | |
3289 | if ((ret = cdi->ops->audio_ioctl(cdi, CDROMREADTOCENTRY, &toc))) | |
3290 | return ret; | |
3291 | sanitize_format(&toc.cdte_addr, &toc.cdte_format, CDROM_LBA); | |
3292 | *last_written = toc.cdte_addr.lba; | |
3293 | return 0; | |
3294 | } | |
3295 | ||
3296 | /* return the next writable block. also for udf file system. */ | |
3297 | static int cdrom_get_next_writable(struct cdrom_device_info *cdi, long *next_writable) | |
3298 | { | |
3299 | disc_information di; | |
3300 | track_information ti; | |
3301 | __u16 last_track; | |
3302 | int ret, ti_size; | |
3303 | ||
3304 | if (!CDROM_CAN(CDC_GENERIC_PACKET)) | |
3305 | goto use_last_written; | |
3306 | ||
3307 | ret = cdrom_get_disc_info(cdi, &di); | |
3308 | if (ret < 0 || ret < offsetof(typeof(di), last_track_lsb) | |
3309 | + sizeof(di.last_track_lsb)) | |
3310 | goto use_last_written; | |
3311 | ||
3312 | /* if unit didn't return msb, it's zeroed by cdrom_get_disc_info */ | |
3313 | last_track = (di.last_track_msb << 8) | di.last_track_lsb; | |
3314 | ti_size = cdrom_get_track_info(cdi, last_track, 1, &ti); | |
3315 | if (ti_size < 0 || ti_size < offsetof(typeof(ti), track_start)) | |
3316 | goto use_last_written; | |
3317 | ||
3318 | /* if this track is blank, try the previous. */ | |
3319 | if (ti.blank) { | |
3320 | if (last_track == 1) | |
3321 | goto use_last_written; | |
3322 | last_track--; | |
3323 | ti_size = cdrom_get_track_info(cdi, last_track, 1, &ti); | |
3324 | if (ti_size < 0) | |
3325 | goto use_last_written; | |
3326 | } | |
3327 | ||
3328 | /* if next recordable address field is valid, use it. */ | |
3329 | if (ti.nwa_v && ti_size >= offsetof(typeof(ti), next_writable) | |
3330 | + sizeof(ti.next_writable)) { | |
3331 | *next_writable = be32_to_cpu(ti.next_writable); | |
3332 | return 0; | |
3333 | } | |
3334 | ||
3335 | use_last_written: | |
3336 | if ((ret = cdrom_get_last_written(cdi, next_writable))) { | |
3337 | *next_writable = 0; | |
3338 | return ret; | |
3339 | } else { | |
3340 | *next_writable += 7; | |
3341 | return 0; | |
3342 | } | |
3343 | } | |
3344 | ||
3345 | EXPORT_SYMBOL(cdrom_get_last_written); | |
3346 | EXPORT_SYMBOL(register_cdrom); | |
3347 | EXPORT_SYMBOL(unregister_cdrom); | |
3348 | EXPORT_SYMBOL(cdrom_open); | |
3349 | EXPORT_SYMBOL(cdrom_release); | |
3350 | EXPORT_SYMBOL(cdrom_ioctl); | |
3351 | EXPORT_SYMBOL(cdrom_media_changed); | |
3352 | EXPORT_SYMBOL(cdrom_number_of_slots); | |
3353 | EXPORT_SYMBOL(cdrom_mode_select); | |
3354 | EXPORT_SYMBOL(cdrom_mode_sense); | |
3355 | EXPORT_SYMBOL(init_cdrom_command); | |
3356 | EXPORT_SYMBOL(cdrom_get_media_event); | |
3357 | ||
3358 | #ifdef CONFIG_SYSCTL | |
3359 | ||
3360 | #define CDROM_STR_SIZE 1000 | |
3361 | ||
3362 | static struct cdrom_sysctl_settings { | |
3363 | char info[CDROM_STR_SIZE]; /* general info */ | |
3364 | int autoclose; /* close tray upon mount, etc */ | |
3365 | int autoeject; /* eject on umount */ | |
3366 | int debug; /* turn on debugging messages */ | |
3367 | int lock; /* lock the door on device open */ | |
3368 | int check; /* check media type */ | |
3369 | } cdrom_sysctl_settings; | |
3370 | ||
554988d6 DY |
3371 | enum cdrom_print_option { |
3372 | CTL_NAME, | |
3373 | CTL_SPEED, | |
3374 | CTL_SLOTS, | |
3375 | CTL_CAPABILITY | |
3376 | }; | |
3377 | ||
3378 | static int cdrom_print_info(const char *header, int val, char *info, | |
3379 | int *pos, enum cdrom_print_option option) | |
3380 | { | |
3381 | const int max_size = sizeof(cdrom_sysctl_settings.info); | |
3382 | struct cdrom_device_info *cdi; | |
3383 | int ret; | |
3384 | ||
3385 | ret = scnprintf(info + *pos, max_size - *pos, header); | |
3386 | if (!ret) | |
3387 | return 1; | |
3388 | ||
3389 | *pos += ret; | |
3390 | ||
7fd097d4 | 3391 | list_for_each_entry(cdi, &cdrom_list, list) { |
554988d6 DY |
3392 | switch (option) { |
3393 | case CTL_NAME: | |
3394 | ret = scnprintf(info + *pos, max_size - *pos, | |
3395 | "\t%s", cdi->name); | |
3396 | break; | |
3397 | case CTL_SPEED: | |
3398 | ret = scnprintf(info + *pos, max_size - *pos, | |
3399 | "\t%d", cdi->speed); | |
3400 | break; | |
3401 | case CTL_SLOTS: | |
3402 | ret = scnprintf(info + *pos, max_size - *pos, | |
3403 | "\t%d", cdi->capacity); | |
3404 | break; | |
3405 | case CTL_CAPABILITY: | |
3406 | ret = scnprintf(info + *pos, max_size - *pos, | |
3407 | "\t%d", CDROM_CAN(val) != 0); | |
3408 | break; | |
3409 | default: | |
e597cd09 | 3410 | pr_info("invalid option%d\n", option); |
554988d6 DY |
3411 | return 1; |
3412 | } | |
3413 | if (!ret) | |
3414 | return 1; | |
3415 | *pos += ret; | |
3416 | } | |
3417 | ||
3418 | return 0; | |
3419 | } | |
3420 | ||
8d65af78 | 3421 | static int cdrom_sysctl_info(ctl_table *ctl, int write, |
1da177e4 LT |
3422 | void __user *buffer, size_t *lenp, loff_t *ppos) |
3423 | { | |
554988d6 | 3424 | int pos; |
1da177e4 | 3425 | char *info = cdrom_sysctl_settings.info; |
554988d6 | 3426 | const int max_size = sizeof(cdrom_sysctl_settings.info); |
1da177e4 LT |
3427 | |
3428 | if (!*lenp || (*ppos && !write)) { | |
3429 | *lenp = 0; | |
3430 | return 0; | |
3431 | } | |
3432 | ||
554988d6 DY |
3433 | mutex_lock(&cdrom_mutex); |
3434 | ||
1da177e4 LT |
3435 | pos = sprintf(info, "CD-ROM information, " VERSION "\n"); |
3436 | ||
554988d6 DY |
3437 | if (cdrom_print_info("\ndrive name:\t", 0, info, &pos, CTL_NAME)) |
3438 | goto done; | |
3439 | if (cdrom_print_info("\ndrive speed:\t", 0, info, &pos, CTL_SPEED)) | |
3440 | goto done; | |
3441 | if (cdrom_print_info("\ndrive # of slots:", 0, info, &pos, CTL_SLOTS)) | |
3442 | goto done; | |
3443 | if (cdrom_print_info("\nCan close tray:\t", | |
3444 | CDC_CLOSE_TRAY, info, &pos, CTL_CAPABILITY)) | |
3445 | goto done; | |
3446 | if (cdrom_print_info("\nCan open tray:\t", | |
3447 | CDC_OPEN_TRAY, info, &pos, CTL_CAPABILITY)) | |
3448 | goto done; | |
3449 | if (cdrom_print_info("\nCan lock tray:\t", | |
3450 | CDC_LOCK, info, &pos, CTL_CAPABILITY)) | |
3451 | goto done; | |
3452 | if (cdrom_print_info("\nCan change speed:", | |
3453 | CDC_SELECT_SPEED, info, &pos, CTL_CAPABILITY)) | |
3454 | goto done; | |
3455 | if (cdrom_print_info("\nCan select disk:", | |
3456 | CDC_SELECT_DISC, info, &pos, CTL_CAPABILITY)) | |
3457 | goto done; | |
3458 | if (cdrom_print_info("\nCan read multisession:", | |
3459 | CDC_MULTI_SESSION, info, &pos, CTL_CAPABILITY)) | |
3460 | goto done; | |
3461 | if (cdrom_print_info("\nCan read MCN:\t", | |
3462 | CDC_MCN, info, &pos, CTL_CAPABILITY)) | |
3463 | goto done; | |
3464 | if (cdrom_print_info("\nReports media changed:", | |
3465 | CDC_MEDIA_CHANGED, info, &pos, CTL_CAPABILITY)) | |
3466 | goto done; | |
3467 | if (cdrom_print_info("\nCan play audio:\t", | |
3468 | CDC_PLAY_AUDIO, info, &pos, CTL_CAPABILITY)) | |
3469 | goto done; | |
3470 | if (cdrom_print_info("\nCan write CD-R:\t", | |
3471 | CDC_CD_R, info, &pos, CTL_CAPABILITY)) | |
3472 | goto done; | |
3473 | if (cdrom_print_info("\nCan write CD-RW:", | |
3474 | CDC_CD_RW, info, &pos, CTL_CAPABILITY)) | |
3475 | goto done; | |
3476 | if (cdrom_print_info("\nCan read DVD:\t", | |
3477 | CDC_DVD, info, &pos, CTL_CAPABILITY)) | |
3478 | goto done; | |
3479 | if (cdrom_print_info("\nCan write DVD-R:", | |
3480 | CDC_DVD_R, info, &pos, CTL_CAPABILITY)) | |
3481 | goto done; | |
3482 | if (cdrom_print_info("\nCan write DVD-RAM:", | |
3483 | CDC_DVD_RAM, info, &pos, CTL_CAPABILITY)) | |
3484 | goto done; | |
3485 | if (cdrom_print_info("\nCan read MRW:\t", | |
3486 | CDC_MRW, info, &pos, CTL_CAPABILITY)) | |
3487 | goto done; | |
3488 | if (cdrom_print_info("\nCan write MRW:\t", | |
3489 | CDC_MRW_W, info, &pos, CTL_CAPABILITY)) | |
3490 | goto done; | |
3491 | if (cdrom_print_info("\nCan write RAM:\t", | |
3492 | CDC_RAM, info, &pos, CTL_CAPABILITY)) | |
3493 | goto done; | |
3494 | if (!scnprintf(info + pos, max_size - pos, "\n\n")) | |
3495 | goto done; | |
3496 | doit: | |
3497 | mutex_unlock(&cdrom_mutex); | |
8d65af78 | 3498 | return proc_dostring(ctl, write, buffer, lenp, ppos); |
554988d6 | 3499 | done: |
e597cd09 | 3500 | pr_info("info buffer too small\n"); |
554988d6 | 3501 | goto doit; |
1da177e4 LT |
3502 | } |
3503 | ||
3504 | /* Unfortunately, per device settings are not implemented through | |
3505 | procfs/sysctl yet. When they are, this will naturally disappear. For now | |
3506 | just update all drives. Later this will become the template on which | |
3507 | new registered drives will be based. */ | |
3508 | static void cdrom_update_settings(void) | |
3509 | { | |
3510 | struct cdrom_device_info *cdi; | |
3511 | ||
032d8d90 | 3512 | mutex_lock(&cdrom_mutex); |
7fd097d4 | 3513 | list_for_each_entry(cdi, &cdrom_list, list) { |
1da177e4 LT |
3514 | if (autoclose && CDROM_CAN(CDC_CLOSE_TRAY)) |
3515 | cdi->options |= CDO_AUTO_CLOSE; | |
3516 | else if (!autoclose) | |
3517 | cdi->options &= ~CDO_AUTO_CLOSE; | |
3518 | if (autoeject && CDROM_CAN(CDC_OPEN_TRAY)) | |
3519 | cdi->options |= CDO_AUTO_EJECT; | |
3520 | else if (!autoeject) | |
3521 | cdi->options &= ~CDO_AUTO_EJECT; | |
3522 | if (lockdoor && CDROM_CAN(CDC_LOCK)) | |
3523 | cdi->options |= CDO_LOCK; | |
3524 | else if (!lockdoor) | |
3525 | cdi->options &= ~CDO_LOCK; | |
3526 | if (check_media_type) | |
3527 | cdi->options |= CDO_CHECK_TYPE; | |
3528 | else | |
3529 | cdi->options &= ~CDO_CHECK_TYPE; | |
3530 | } | |
032d8d90 | 3531 | mutex_unlock(&cdrom_mutex); |
1da177e4 LT |
3532 | } |
3533 | ||
8d65af78 | 3534 | static int cdrom_sysctl_handler(ctl_table *ctl, int write, |
1da177e4 LT |
3535 | void __user *buffer, size_t *lenp, loff_t *ppos) |
3536 | { | |
1da177e4 LT |
3537 | int ret; |
3538 | ||
8d65af78 | 3539 | ret = proc_dointvec(ctl, write, buffer, lenp, ppos); |
1da177e4 | 3540 | |
06489b4e | 3541 | if (write) { |
1da177e4 LT |
3542 | |
3543 | /* we only care for 1 or 0. */ | |
06489b4e EB |
3544 | autoclose = !!cdrom_sysctl_settings.autoclose; |
3545 | autoeject = !!cdrom_sysctl_settings.autoeject; | |
3546 | debug = !!cdrom_sysctl_settings.debug; | |
3547 | lockdoor = !!cdrom_sysctl_settings.lock; | |
3548 | check_media_type = !!cdrom_sysctl_settings.check; | |
1da177e4 | 3549 | |
1da177e4 LT |
3550 | /* update the option flags according to the changes. we |
3551 | don't have per device options through sysctl yet, | |
3552 | but we will have and then this will disappear. */ | |
3553 | cdrom_update_settings(); | |
3554 | } | |
3555 | ||
3556 | return ret; | |
3557 | } | |
3558 | ||
3559 | /* Place files in /proc/sys/dev/cdrom */ | |
3560 | static ctl_table cdrom_table[] = { | |
3561 | { | |
1da177e4 LT |
3562 | .procname = "info", |
3563 | .data = &cdrom_sysctl_settings.info, | |
3564 | .maxlen = CDROM_STR_SIZE, | |
3565 | .mode = 0444, | |
6d456111 | 3566 | .proc_handler = cdrom_sysctl_info, |
1da177e4 LT |
3567 | }, |
3568 | { | |
1da177e4 LT |
3569 | .procname = "autoclose", |
3570 | .data = &cdrom_sysctl_settings.autoclose, | |
3571 | .maxlen = sizeof(int), | |
3572 | .mode = 0644, | |
6d456111 | 3573 | .proc_handler = cdrom_sysctl_handler, |
1da177e4 LT |
3574 | }, |
3575 | { | |
1da177e4 LT |
3576 | .procname = "autoeject", |
3577 | .data = &cdrom_sysctl_settings.autoeject, | |
3578 | .maxlen = sizeof(int), | |
3579 | .mode = 0644, | |
6d456111 | 3580 | .proc_handler = cdrom_sysctl_handler, |
1da177e4 LT |
3581 | }, |
3582 | { | |
1da177e4 LT |
3583 | .procname = "debug", |
3584 | .data = &cdrom_sysctl_settings.debug, | |
3585 | .maxlen = sizeof(int), | |
3586 | .mode = 0644, | |
6d456111 | 3587 | .proc_handler = cdrom_sysctl_handler, |
1da177e4 LT |
3588 | }, |
3589 | { | |
1da177e4 LT |
3590 | .procname = "lock", |
3591 | .data = &cdrom_sysctl_settings.lock, | |
3592 | .maxlen = sizeof(int), | |
3593 | .mode = 0644, | |
6d456111 | 3594 | .proc_handler = cdrom_sysctl_handler, |
1da177e4 LT |
3595 | }, |
3596 | { | |
1da177e4 LT |
3597 | .procname = "check_media", |
3598 | .data = &cdrom_sysctl_settings.check, | |
3599 | .maxlen = sizeof(int), | |
3600 | .mode = 0644, | |
6d456111 | 3601 | .proc_handler = cdrom_sysctl_handler |
1da177e4 | 3602 | }, |
894d2491 | 3603 | { } |
1da177e4 LT |
3604 | }; |
3605 | ||
3606 | static ctl_table cdrom_cdrom_table[] = { | |
3607 | { | |
1da177e4 LT |
3608 | .procname = "cdrom", |
3609 | .maxlen = 0, | |
3610 | .mode = 0555, | |
3611 | .child = cdrom_table, | |
3612 | }, | |
894d2491 | 3613 | { } |
1da177e4 LT |
3614 | }; |
3615 | ||
3616 | /* Make sure that /proc/sys/dev is there */ | |
3617 | static ctl_table cdrom_root_table[] = { | |
3618 | { | |
1da177e4 LT |
3619 | .procname = "dev", |
3620 | .maxlen = 0, | |
3621 | .mode = 0555, | |
3622 | .child = cdrom_cdrom_table, | |
3623 | }, | |
894d2491 | 3624 | { } |
1da177e4 LT |
3625 | }; |
3626 | static struct ctl_table_header *cdrom_sysctl_header; | |
3627 | ||
3628 | static void cdrom_sysctl_register(void) | |
3629 | { | |
3630 | static int initialized; | |
3631 | ||
3632 | if (initialized == 1) | |
3633 | return; | |
3634 | ||
0b4d4147 | 3635 | cdrom_sysctl_header = register_sysctl_table(cdrom_root_table); |
1da177e4 LT |
3636 | |
3637 | /* set the defaults */ | |
3638 | cdrom_sysctl_settings.autoclose = autoclose; | |
3639 | cdrom_sysctl_settings.autoeject = autoeject; | |
3640 | cdrom_sysctl_settings.debug = debug; | |
3641 | cdrom_sysctl_settings.lock = lockdoor; | |
3642 | cdrom_sysctl_settings.check = check_media_type; | |
3643 | ||
3644 | initialized = 1; | |
3645 | } | |
3646 | ||
3647 | static void cdrom_sysctl_unregister(void) | |
3648 | { | |
3649 | if (cdrom_sysctl_header) | |
3650 | unregister_sysctl_table(cdrom_sysctl_header); | |
3651 | } | |
3652 | ||
17672cf0 AM |
3653 | #else /* CONFIG_SYSCTL */ |
3654 | ||
3655 | static void cdrom_sysctl_register(void) | |
3656 | { | |
3657 | } | |
3658 | ||
3659 | static void cdrom_sysctl_unregister(void) | |
3660 | { | |
3661 | } | |
3662 | ||
1da177e4 LT |
3663 | #endif /* CONFIG_SYSCTL */ |
3664 | ||
3665 | static int __init cdrom_init(void) | |
3666 | { | |
1da177e4 | 3667 | cdrom_sysctl_register(); |
17672cf0 | 3668 | |
1da177e4 LT |
3669 | return 0; |
3670 | } | |
3671 | ||
3672 | static void __exit cdrom_exit(void) | |
3673 | { | |
e597cd09 | 3674 | pr_info("Uniform CD-ROM driver unloaded\n"); |
1da177e4 | 3675 | cdrom_sysctl_unregister(); |
1da177e4 LT |
3676 | } |
3677 | ||
3678 | module_init(cdrom_init); | |
3679 | module_exit(cdrom_exit); | |
3680 | MODULE_LICENSE("GPL"); |