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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> | |
25985edc | 33 | -- New maintainer! As David A. van Leeuwen has been too busy to actively |
1da177e4 LT |
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> | |
1da177e4 LT |
270 | #include <linux/major.h> |
271 | #include <linux/types.h> | |
272 | #include <linux/errno.h> | |
273 | #include <linux/kernel.h> | |
274 | #include <linux/mm.h> | |
275 | #include <linux/slab.h> | |
276 | #include <linux/cdrom.h> | |
277 | #include <linux/sysctl.h> | |
278 | #include <linux/proc_fs.h> | |
279 | #include <linux/blkpg.h> | |
280 | #include <linux/init.h> | |
281 | #include <linux/fcntl.h> | |
282 | #include <linux/blkdev.h> | |
283 | #include <linux/times.h> | |
284 | ||
285 | #include <asm/uaccess.h> | |
286 | ||
287 | /* used to tell the module to turn on full debugging messages */ | |
90ab5ee9 | 288 | static bool debug; |
1da177e4 | 289 | /* default compatibility mode */ |
90ab5ee9 RR |
290 | static bool autoclose=1; |
291 | static bool autoeject; | |
292 | static bool lockdoor = 1; | |
1da177e4 | 293 | /* will we ever get to use this... sigh. */ |
90ab5ee9 | 294 | static bool check_media_type; |
1da177e4 | 295 | /* automatically restart mrw format */ |
90ab5ee9 | 296 | static bool mrw_format_restart = 1; |
1da177e4 LT |
297 | module_param(debug, bool, 0); |
298 | module_param(autoclose, bool, 0); | |
299 | module_param(autoeject, bool, 0); | |
300 | module_param(lockdoor, bool, 0); | |
301 | module_param(check_media_type, bool, 0); | |
302 | module_param(mrw_format_restart, bool, 0); | |
303 | ||
554988d6 | 304 | static DEFINE_MUTEX(cdrom_mutex); |
1da177e4 LT |
305 | |
306 | static const char *mrw_format_status[] = { | |
307 | "not mrw", | |
308 | "bgformat inactive", | |
309 | "bgformat active", | |
310 | "mrw complete", | |
311 | }; | |
312 | ||
313 | static const char *mrw_address_space[] = { "DMA", "GAA" }; | |
314 | ||
5944b2ce JP |
315 | #if (ERRLOGMASK != CD_NOTHING) |
316 | #define cd_dbg(type, fmt, ...) \ | |
e597cd09 JP |
317 | do { \ |
318 | if ((ERRLOGMASK & type) || debug == 1) \ | |
5944b2ce | 319 | pr_debug(fmt, ##__VA_ARGS__); \ |
e597cd09 | 320 | } while (0) |
1da177e4 | 321 | #else |
5944b2ce | 322 | #define cd_dbg(type, fmt, ...) \ |
e597cd09 JP |
323 | do { \ |
324 | if (0 && (ERRLOGMASK & type) || debug == 1) \ | |
5944b2ce | 325 | pr_debug(fmt, ##__VA_ARGS__); \ |
e597cd09 | 326 | } while (0) |
1da177e4 LT |
327 | #endif |
328 | ||
1da177e4 LT |
329 | /* The (cdo->capability & ~cdi->mask & CDC_XXX) construct was used in |
330 | a lot of places. This macro makes the code more clear. */ | |
331 | #define CDROM_CAN(type) (cdi->ops->capability & ~cdi->mask & (type)) | |
332 | ||
2e11c207 JA |
333 | /* |
334 | * Another popular OS uses 7 seconds as the hard timeout for default | |
335 | * commands, so it is a good choice for us as well. | |
336 | */ | |
337 | #define CDROM_DEF_TIMEOUT (7 * HZ) | |
338 | ||
1da177e4 LT |
339 | /* Not-exported routines. */ |
340 | static int open_for_data(struct cdrom_device_info * cdi); | |
341 | static int check_for_audio_disc(struct cdrom_device_info * cdi, | |
342 | struct cdrom_device_ops * cdo); | |
343 | static void sanitize_format(union cdrom_addr *addr, | |
344 | u_char * curr, u_char requested); | |
345 | static int mmc_ioctl(struct cdrom_device_info *cdi, unsigned int cmd, | |
346 | unsigned long arg); | |
347 | ||
348 | int cdrom_get_last_written(struct cdrom_device_info *, long *); | |
349 | static int cdrom_get_next_writable(struct cdrom_device_info *, long *); | |
350 | static void cdrom_count_tracks(struct cdrom_device_info *, tracktype*); | |
351 | ||
352 | static int cdrom_mrw_exit(struct cdrom_device_info *cdi); | |
353 | ||
354 | static int cdrom_get_disc_info(struct cdrom_device_info *cdi, disc_information *di); | |
355 | ||
1da177e4 | 356 | static void cdrom_sysctl_register(void); |
17672cf0 | 357 | |
7fd097d4 | 358 | static LIST_HEAD(cdrom_list); |
1da177e4 LT |
359 | |
360 | static int cdrom_dummy_generic_packet(struct cdrom_device_info *cdi, | |
361 | struct packet_command *cgc) | |
362 | { | |
363 | if (cgc->sense) { | |
364 | cgc->sense->sense_key = 0x05; | |
365 | cgc->sense->asc = 0x20; | |
366 | cgc->sense->ascq = 0x00; | |
367 | } | |
368 | ||
369 | cgc->stat = -EIO; | |
370 | return -EIO; | |
371 | } | |
372 | ||
373 | /* This macro makes sure we don't have to check on cdrom_device_ops | |
374 | * existence in the run-time routines below. Change_capability is a | |
375 | * hack to have the capability flags defined const, while we can still | |
376 | * change it here without gcc complaining at every line. | |
377 | */ | |
378 | #define ENSURE(call, bits) if (cdo->call == NULL) *change_capability &= ~(bits) | |
379 | ||
380 | int register_cdrom(struct cdrom_device_info *cdi) | |
381 | { | |
382 | static char banner_printed; | |
383 | struct cdrom_device_ops *cdo = cdi->ops; | |
384 | int *change_capability = (int *)&cdo->capability; /* hack */ | |
385 | ||
5944b2ce | 386 | cd_dbg(CD_OPEN, "entering register_cdrom\n"); |
1da177e4 LT |
387 | |
388 | if (cdo->open == NULL || cdo->release == NULL) | |
3c3f4e01 | 389 | return -EINVAL; |
1da177e4 | 390 | if (!banner_printed) { |
e597cd09 | 391 | pr_info("Uniform CD-ROM driver " REVISION "\n"); |
1da177e4 | 392 | banner_printed = 1; |
1da177e4 | 393 | cdrom_sysctl_register(); |
1da177e4 LT |
394 | } |
395 | ||
396 | ENSURE(drive_status, CDC_DRIVE_STATUS ); | |
b8cf0e0e SA |
397 | if (cdo->check_events == NULL && cdo->media_changed == NULL) |
398 | *change_capability = ~(CDC_MEDIA_CHANGED | CDC_SELECT_DISC); | |
1da177e4 LT |
399 | ENSURE(tray_move, CDC_CLOSE_TRAY | CDC_OPEN_TRAY); |
400 | ENSURE(lock_door, CDC_LOCK); | |
401 | ENSURE(select_speed, CDC_SELECT_SPEED); | |
402 | ENSURE(get_last_session, CDC_MULTI_SESSION); | |
403 | ENSURE(get_mcn, CDC_MCN); | |
404 | ENSURE(reset, CDC_RESET); | |
1da177e4 LT |
405 | ENSURE(generic_packet, CDC_GENERIC_PACKET); |
406 | cdi->mc_flags = 0; | |
407 | cdo->n_minors = 0; | |
408 | cdi->options = CDO_USE_FFLAGS; | |
409 | ||
410 | if (autoclose==1 && CDROM_CAN(CDC_CLOSE_TRAY)) | |
411 | cdi->options |= (int) CDO_AUTO_CLOSE; | |
412 | if (autoeject==1 && CDROM_CAN(CDC_OPEN_TRAY)) | |
413 | cdi->options |= (int) CDO_AUTO_EJECT; | |
414 | if (lockdoor==1) | |
415 | cdi->options |= (int) CDO_LOCK; | |
416 | if (check_media_type==1) | |
417 | cdi->options |= (int) CDO_CHECK_TYPE; | |
418 | ||
419 | if (CDROM_CAN(CDC_MRW_W)) | |
420 | cdi->exit = cdrom_mrw_exit; | |
421 | ||
422 | if (cdi->disk) | |
423 | cdi->cdda_method = CDDA_BPC_FULL; | |
424 | else | |
425 | cdi->cdda_method = CDDA_OLD; | |
426 | ||
427 | if (!cdo->generic_packet) | |
428 | cdo->generic_packet = cdrom_dummy_generic_packet; | |
429 | ||
5944b2ce | 430 | cd_dbg(CD_REG_UNREG, "drive \"/dev/%s\" registered\n", cdi->name); |
554988d6 | 431 | mutex_lock(&cdrom_mutex); |
7fd097d4 | 432 | list_add(&cdi->list, &cdrom_list); |
554988d6 | 433 | mutex_unlock(&cdrom_mutex); |
1da177e4 LT |
434 | return 0; |
435 | } | |
436 | #undef ENSURE | |
437 | ||
0a0c4114 | 438 | void unregister_cdrom(struct cdrom_device_info *cdi) |
1da177e4 | 439 | { |
5944b2ce | 440 | cd_dbg(CD_OPEN, "entering unregister_cdrom\n"); |
1da177e4 | 441 | |
554988d6 | 442 | mutex_lock(&cdrom_mutex); |
7fd097d4 | 443 | list_del(&cdi->list); |
554988d6 | 444 | mutex_unlock(&cdrom_mutex); |
1da177e4 LT |
445 | |
446 | if (cdi->exit) | |
447 | cdi->exit(cdi); | |
448 | ||
449 | cdi->ops->n_minors--; | |
5944b2ce | 450 | cd_dbg(CD_REG_UNREG, "drive \"/dev/%s\" unregistered\n", cdi->name); |
1da177e4 LT |
451 | } |
452 | ||
453 | int cdrom_get_media_event(struct cdrom_device_info *cdi, | |
454 | struct media_event_desc *med) | |
455 | { | |
456 | struct packet_command cgc; | |
fce53847 FT |
457 | unsigned char buffer[8]; |
458 | struct event_header *eh = (struct event_header *) buffer; | |
1da177e4 | 459 | |
fce53847 | 460 | init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_READ); |
1da177e4 LT |
461 | cgc.cmd[0] = GPCMD_GET_EVENT_STATUS_NOTIFICATION; |
462 | cgc.cmd[1] = 1; /* IMMED */ | |
463 | cgc.cmd[4] = 1 << 4; /* media event */ | |
fce53847 | 464 | cgc.cmd[8] = sizeof(buffer); |
1da177e4 LT |
465 | cgc.quiet = 1; |
466 | ||
467 | if (cdi->ops->generic_packet(cdi, &cgc)) | |
fce53847 | 468 | return 1; |
1da177e4 LT |
469 | |
470 | if (be16_to_cpu(eh->data_len) < sizeof(*med)) | |
fce53847 | 471 | return 1; |
1da177e4 LT |
472 | |
473 | if (eh->nea || eh->notification_class != 0x4) | |
fce53847 | 474 | return 1; |
1da177e4 | 475 | |
fce53847 FT |
476 | memcpy(med, &buffer[sizeof(*eh)], sizeof(*med)); |
477 | return 0; | |
1da177e4 LT |
478 | } |
479 | ||
480 | /* | |
481 | * the first prototypes used 0x2c as the page code for the mrw mode page, | |
482 | * subsequently this was changed to 0x03. probe the one used by this drive | |
483 | */ | |
484 | static int cdrom_mrw_probe_pc(struct cdrom_device_info *cdi) | |
485 | { | |
486 | struct packet_command cgc; | |
fce53847 | 487 | char buffer[16]; |
1da177e4 | 488 | |
fce53847 | 489 | init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_READ); |
1da177e4 LT |
490 | |
491 | cgc.timeout = HZ; | |
492 | cgc.quiet = 1; | |
493 | ||
494 | if (!cdrom_mode_sense(cdi, &cgc, MRW_MODE_PC, 0)) { | |
495 | cdi->mrw_mode_page = MRW_MODE_PC; | |
fce53847 | 496 | return 0; |
1da177e4 LT |
497 | } else if (!cdrom_mode_sense(cdi, &cgc, MRW_MODE_PC_PRE1, 0)) { |
498 | cdi->mrw_mode_page = MRW_MODE_PC_PRE1; | |
fce53847 | 499 | return 0; |
1da177e4 | 500 | } |
fce53847 FT |
501 | |
502 | return 1; | |
1da177e4 LT |
503 | } |
504 | ||
505 | static int cdrom_is_mrw(struct cdrom_device_info *cdi, int *write) | |
506 | { | |
507 | struct packet_command cgc; | |
508 | struct mrw_feature_desc *mfd; | |
fce53847 | 509 | unsigned char buffer[16]; |
1da177e4 LT |
510 | int ret; |
511 | ||
512 | *write = 0; | |
513 | ||
fce53847 | 514 | init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_READ); |
1da177e4 LT |
515 | |
516 | cgc.cmd[0] = GPCMD_GET_CONFIGURATION; | |
517 | cgc.cmd[3] = CDF_MRW; | |
fce53847 | 518 | cgc.cmd[8] = sizeof(buffer); |
1da177e4 LT |
519 | cgc.quiet = 1; |
520 | ||
521 | if ((ret = cdi->ops->generic_packet(cdi, &cgc))) | |
fce53847 | 522 | return ret; |
1da177e4 LT |
523 | |
524 | mfd = (struct mrw_feature_desc *)&buffer[sizeof(struct feature_header)]; | |
fce53847 FT |
525 | if (be16_to_cpu(mfd->feature_code) != CDF_MRW) |
526 | return 1; | |
1da177e4 LT |
527 | *write = mfd->write; |
528 | ||
529 | if ((ret = cdrom_mrw_probe_pc(cdi))) { | |
530 | *write = 0; | |
fce53847 | 531 | return ret; |
1da177e4 | 532 | } |
fce53847 FT |
533 | |
534 | return 0; | |
1da177e4 LT |
535 | } |
536 | ||
537 | static int cdrom_mrw_bgformat(struct cdrom_device_info *cdi, int cont) | |
538 | { | |
539 | struct packet_command cgc; | |
fce53847 | 540 | unsigned char buffer[12]; |
1da177e4 LT |
541 | int ret; |
542 | ||
e597cd09 | 543 | pr_info("%sstarting format\n", cont ? "Re" : ""); |
1da177e4 LT |
544 | |
545 | /* | |
546 | * FmtData bit set (bit 4), format type is 1 | |
547 | */ | |
fce53847 | 548 | init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_WRITE); |
1da177e4 LT |
549 | cgc.cmd[0] = GPCMD_FORMAT_UNIT; |
550 | cgc.cmd[1] = (1 << 4) | 1; | |
551 | ||
552 | cgc.timeout = 5 * 60 * HZ; | |
553 | ||
554 | /* | |
555 | * 4 byte format list header, 8 byte format list descriptor | |
556 | */ | |
557 | buffer[1] = 1 << 1; | |
558 | buffer[3] = 8; | |
559 | ||
560 | /* | |
561 | * nr_blocks field | |
562 | */ | |
563 | buffer[4] = 0xff; | |
564 | buffer[5] = 0xff; | |
565 | buffer[6] = 0xff; | |
566 | buffer[7] = 0xff; | |
567 | ||
568 | buffer[8] = 0x24 << 2; | |
569 | buffer[11] = cont; | |
570 | ||
571 | ret = cdi->ops->generic_packet(cdi, &cgc); | |
572 | if (ret) | |
e597cd09 | 573 | pr_info("bgformat failed\n"); |
1da177e4 LT |
574 | |
575 | return ret; | |
576 | } | |
577 | ||
578 | static int cdrom_mrw_bgformat_susp(struct cdrom_device_info *cdi, int immed) | |
579 | { | |
580 | struct packet_command cgc; | |
581 | ||
582 | init_cdrom_command(&cgc, NULL, 0, CGC_DATA_NONE); | |
583 | cgc.cmd[0] = GPCMD_CLOSE_TRACK; | |
584 | ||
585 | /* | |
586 | * Session = 1, Track = 0 | |
587 | */ | |
588 | cgc.cmd[1] = !!immed; | |
589 | cgc.cmd[2] = 1 << 1; | |
590 | ||
591 | cgc.timeout = 5 * 60 * HZ; | |
592 | ||
593 | return cdi->ops->generic_packet(cdi, &cgc); | |
594 | } | |
595 | ||
596 | static int cdrom_flush_cache(struct cdrom_device_info *cdi) | |
597 | { | |
598 | struct packet_command cgc; | |
599 | ||
600 | init_cdrom_command(&cgc, NULL, 0, CGC_DATA_NONE); | |
601 | cgc.cmd[0] = GPCMD_FLUSH_CACHE; | |
602 | ||
603 | cgc.timeout = 5 * 60 * HZ; | |
604 | ||
605 | return cdi->ops->generic_packet(cdi, &cgc); | |
606 | } | |
607 | ||
608 | static int cdrom_mrw_exit(struct cdrom_device_info *cdi) | |
609 | { | |
610 | disc_information di; | |
611 | int ret; | |
612 | ||
613 | ret = cdrom_get_disc_info(cdi, &di); | |
614 | if (ret < 0 || ret < (int)offsetof(typeof(di),disc_type)) | |
615 | return 1; | |
616 | ||
617 | ret = 0; | |
618 | if (di.mrw_status == CDM_MRW_BGFORMAT_ACTIVE) { | |
e597cd09 | 619 | pr_info("issuing MRW background format suspend\n"); |
1da177e4 LT |
620 | ret = cdrom_mrw_bgformat_susp(cdi, 0); |
621 | } | |
622 | ||
7da21a02 | 623 | if (!ret && cdi->media_written) |
1da177e4 LT |
624 | ret = cdrom_flush_cache(cdi); |
625 | ||
626 | return ret; | |
627 | } | |
628 | ||
629 | static int cdrom_mrw_set_lba_space(struct cdrom_device_info *cdi, int space) | |
630 | { | |
631 | struct packet_command cgc; | |
632 | struct mode_page_header *mph; | |
fce53847 | 633 | char buffer[16]; |
1da177e4 LT |
634 | int ret, offset, size; |
635 | ||
fce53847 | 636 | init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_READ); |
1da177e4 | 637 | |
fce53847 FT |
638 | cgc.buffer = buffer; |
639 | cgc.buflen = sizeof(buffer); | |
1da177e4 LT |
640 | |
641 | if ((ret = cdrom_mode_sense(cdi, &cgc, cdi->mrw_mode_page, 0))) | |
fce53847 | 642 | return ret; |
1da177e4 LT |
643 | |
644 | mph = (struct mode_page_header *) buffer; | |
645 | offset = be16_to_cpu(mph->desc_length); | |
646 | size = be16_to_cpu(mph->mode_data_length) + 2; | |
647 | ||
648 | buffer[offset + 3] = space; | |
649 | cgc.buflen = size; | |
650 | ||
651 | if ((ret = cdrom_mode_select(cdi, &cgc))) | |
fce53847 | 652 | return ret; |
1da177e4 | 653 | |
e597cd09 JP |
654 | pr_info("%s: mrw address space %s selected\n", |
655 | cdi->name, mrw_address_space[space]); | |
fce53847 | 656 | return 0; |
1da177e4 LT |
657 | } |
658 | ||
659 | static int cdrom_get_random_writable(struct cdrom_device_info *cdi, | |
660 | struct rwrt_feature_desc *rfd) | |
661 | { | |
662 | struct packet_command cgc; | |
fce53847 | 663 | char buffer[24]; |
1da177e4 LT |
664 | int ret; |
665 | ||
fce53847 | 666 | init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_READ); |
1da177e4 LT |
667 | |
668 | cgc.cmd[0] = GPCMD_GET_CONFIGURATION; /* often 0x46 */ | |
669 | cgc.cmd[3] = CDF_RWRT; /* often 0x0020 */ | |
fce53847 | 670 | cgc.cmd[8] = sizeof(buffer); /* often 0x18 */ |
1da177e4 LT |
671 | cgc.quiet = 1; |
672 | ||
673 | if ((ret = cdi->ops->generic_packet(cdi, &cgc))) | |
fce53847 | 674 | return ret; |
1da177e4 LT |
675 | |
676 | memcpy(rfd, &buffer[sizeof(struct feature_header)], sizeof (*rfd)); | |
fce53847 | 677 | return 0; |
1da177e4 LT |
678 | } |
679 | ||
680 | static int cdrom_has_defect_mgt(struct cdrom_device_info *cdi) | |
681 | { | |
682 | struct packet_command cgc; | |
fce53847 | 683 | char buffer[16]; |
56052d52 | 684 | __be16 *feature_code; |
1da177e4 LT |
685 | int ret; |
686 | ||
fce53847 | 687 | init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_READ); |
1da177e4 LT |
688 | |
689 | cgc.cmd[0] = GPCMD_GET_CONFIGURATION; | |
690 | cgc.cmd[3] = CDF_HWDM; | |
fce53847 | 691 | cgc.cmd[8] = sizeof(buffer); |
1da177e4 LT |
692 | cgc.quiet = 1; |
693 | ||
694 | if ((ret = cdi->ops->generic_packet(cdi, &cgc))) | |
fce53847 | 695 | return ret; |
1da177e4 | 696 | |
56052d52 | 697 | feature_code = (__be16 *) &buffer[sizeof(struct feature_header)]; |
1da177e4 | 698 | if (be16_to_cpu(*feature_code) == CDF_HWDM) |
fce53847 FT |
699 | return 0; |
700 | ||
701 | return 1; | |
1da177e4 LT |
702 | } |
703 | ||
704 | ||
705 | static int cdrom_is_random_writable(struct cdrom_device_info *cdi, int *write) | |
706 | { | |
707 | struct rwrt_feature_desc rfd; | |
708 | int ret; | |
709 | ||
710 | *write = 0; | |
711 | ||
712 | if ((ret = cdrom_get_random_writable(cdi, &rfd))) | |
713 | return ret; | |
714 | ||
715 | if (CDF_RWRT == be16_to_cpu(rfd.feature_code)) | |
716 | *write = 1; | |
717 | ||
718 | return 0; | |
719 | } | |
720 | ||
721 | static int cdrom_media_erasable(struct cdrom_device_info *cdi) | |
722 | { | |
723 | disc_information di; | |
724 | int ret; | |
725 | ||
726 | ret = cdrom_get_disc_info(cdi, &di); | |
727 | if (ret < 0 || ret < offsetof(typeof(di), n_first_track)) | |
728 | return -1; | |
729 | ||
730 | return di.erasable; | |
731 | } | |
732 | ||
733 | /* | |
734 | * FIXME: check RO bit | |
735 | */ | |
736 | static int cdrom_dvdram_open_write(struct cdrom_device_info *cdi) | |
737 | { | |
738 | int ret = cdrom_media_erasable(cdi); | |
739 | ||
740 | /* | |
741 | * allow writable open if media info read worked and media is | |
742 | * erasable, _or_ if it fails since not all drives support it | |
743 | */ | |
744 | if (!ret) | |
745 | return 1; | |
746 | ||
747 | return 0; | |
748 | } | |
749 | ||
750 | static int cdrom_mrw_open_write(struct cdrom_device_info *cdi) | |
751 | { | |
752 | disc_information di; | |
753 | int ret; | |
754 | ||
755 | /* | |
756 | * always reset to DMA lba space on open | |
757 | */ | |
758 | if (cdrom_mrw_set_lba_space(cdi, MRW_LBA_DMA)) { | |
e597cd09 | 759 | pr_err("failed setting lba address space\n"); |
1da177e4 LT |
760 | return 1; |
761 | } | |
762 | ||
763 | ret = cdrom_get_disc_info(cdi, &di); | |
764 | if (ret < 0 || ret < offsetof(typeof(di),disc_type)) | |
765 | return 1; | |
766 | ||
767 | if (!di.erasable) | |
768 | return 1; | |
769 | ||
770 | /* | |
771 | * mrw_status | |
772 | * 0 - not MRW formatted | |
773 | * 1 - MRW bgformat started, but not running or complete | |
774 | * 2 - MRW bgformat in progress | |
775 | * 3 - MRW formatting complete | |
776 | */ | |
777 | ret = 0; | |
e597cd09 | 778 | pr_info("open: mrw_status '%s'\n", mrw_format_status[di.mrw_status]); |
1da177e4 LT |
779 | if (!di.mrw_status) |
780 | ret = 1; | |
781 | else if (di.mrw_status == CDM_MRW_BGFORMAT_INACTIVE && | |
782 | mrw_format_restart) | |
783 | ret = cdrom_mrw_bgformat(cdi, 1); | |
784 | ||
785 | return ret; | |
786 | } | |
787 | ||
788 | static int mo_open_write(struct cdrom_device_info *cdi) | |
789 | { | |
790 | struct packet_command cgc; | |
fce53847 | 791 | char buffer[255]; |
1da177e4 LT |
792 | int ret; |
793 | ||
fce53847 | 794 | init_cdrom_command(&cgc, &buffer, 4, CGC_DATA_READ); |
1da177e4 LT |
795 | cgc.quiet = 1; |
796 | ||
797 | /* | |
798 | * obtain write protect information as per | |
799 | * drivers/scsi/sd.c:sd_read_write_protect_flag | |
800 | */ | |
801 | ||
802 | ret = cdrom_mode_sense(cdi, &cgc, GPMODE_ALL_PAGES, 0); | |
803 | if (ret) | |
804 | ret = cdrom_mode_sense(cdi, &cgc, GPMODE_VENDOR_PAGE, 0); | |
805 | if (ret) { | |
806 | cgc.buflen = 255; | |
807 | ret = cdrom_mode_sense(cdi, &cgc, GPMODE_ALL_PAGES, 0); | |
808 | } | |
809 | ||
810 | /* drive gave us no info, let the user go ahead */ | |
fce53847 FT |
811 | if (ret) |
812 | return 0; | |
1da177e4 | 813 | |
fce53847 | 814 | return buffer[3] & 0x80; |
1da177e4 LT |
815 | } |
816 | ||
817 | static int cdrom_ram_open_write(struct cdrom_device_info *cdi) | |
818 | { | |
819 | struct rwrt_feature_desc rfd; | |
820 | int ret; | |
821 | ||
822 | if ((ret = cdrom_has_defect_mgt(cdi))) | |
823 | return ret; | |
824 | ||
825 | if ((ret = cdrom_get_random_writable(cdi, &rfd))) | |
826 | return ret; | |
827 | else if (CDF_RWRT == be16_to_cpu(rfd.feature_code)) | |
828 | ret = !rfd.curr; | |
829 | ||
5944b2ce | 830 | cd_dbg(CD_OPEN, "can open for random write\n"); |
1da177e4 LT |
831 | return ret; |
832 | } | |
833 | ||
834 | static void cdrom_mmc3_profile(struct cdrom_device_info *cdi) | |
835 | { | |
836 | struct packet_command cgc; | |
fce53847 | 837 | char buffer[32]; |
1da177e4 LT |
838 | int ret, mmc3_profile; |
839 | ||
fce53847 | 840 | init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_READ); |
1da177e4 LT |
841 | |
842 | cgc.cmd[0] = GPCMD_GET_CONFIGURATION; | |
843 | cgc.cmd[1] = 0; | |
844 | cgc.cmd[2] = cgc.cmd[3] = 0; /* Starting Feature Number */ | |
fce53847 | 845 | cgc.cmd[8] = sizeof(buffer); /* Allocation Length */ |
1da177e4 LT |
846 | cgc.quiet = 1; |
847 | ||
848 | if ((ret = cdi->ops->generic_packet(cdi, &cgc))) | |
849 | mmc3_profile = 0xffff; | |
850 | else | |
851 | mmc3_profile = (buffer[6] << 8) | buffer[7]; | |
852 | ||
853 | cdi->mmc3_profile = mmc3_profile; | |
854 | } | |
855 | ||
856 | static int cdrom_is_dvd_rw(struct cdrom_device_info *cdi) | |
857 | { | |
858 | switch (cdi->mmc3_profile) { | |
859 | case 0x12: /* DVD-RAM */ | |
860 | case 0x1A: /* DVD+RW */ | |
861 | return 0; | |
862 | default: | |
863 | return 1; | |
864 | } | |
865 | } | |
866 | ||
867 | /* | |
868 | * returns 0 for ok to open write, non-0 to disallow | |
869 | */ | |
870 | static int cdrom_open_write(struct cdrom_device_info *cdi) | |
871 | { | |
872 | int mrw, mrw_write, ram_write; | |
873 | int ret = 1; | |
874 | ||
875 | mrw = 0; | |
876 | if (!cdrom_is_mrw(cdi, &mrw_write)) | |
877 | mrw = 1; | |
878 | ||
879 | if (CDROM_CAN(CDC_MO_DRIVE)) | |
880 | ram_write = 1; | |
881 | else | |
882 | (void) cdrom_is_random_writable(cdi, &ram_write); | |
883 | ||
884 | if (mrw) | |
885 | cdi->mask &= ~CDC_MRW; | |
886 | else | |
887 | cdi->mask |= CDC_MRW; | |
888 | ||
889 | if (mrw_write) | |
890 | cdi->mask &= ~CDC_MRW_W; | |
891 | else | |
892 | cdi->mask |= CDC_MRW_W; | |
893 | ||
894 | if (ram_write) | |
895 | cdi->mask &= ~CDC_RAM; | |
896 | else | |
897 | cdi->mask |= CDC_RAM; | |
898 | ||
899 | if (CDROM_CAN(CDC_MRW_W)) | |
900 | ret = cdrom_mrw_open_write(cdi); | |
901 | else if (CDROM_CAN(CDC_DVD_RAM)) | |
902 | ret = cdrom_dvdram_open_write(cdi); | |
903 | else if (CDROM_CAN(CDC_RAM) && | |
904 | !CDROM_CAN(CDC_CD_R|CDC_CD_RW|CDC_DVD|CDC_DVD_R|CDC_MRW|CDC_MO_DRIVE)) | |
905 | ret = cdrom_ram_open_write(cdi); | |
906 | else if (CDROM_CAN(CDC_MO_DRIVE)) | |
907 | ret = mo_open_write(cdi); | |
908 | else if (!cdrom_is_dvd_rw(cdi)) | |
909 | ret = 0; | |
910 | ||
911 | return ret; | |
912 | } | |
913 | ||
914 | static void cdrom_dvd_rw_close_write(struct cdrom_device_info *cdi) | |
915 | { | |
916 | struct packet_command cgc; | |
917 | ||
918 | if (cdi->mmc3_profile != 0x1a) { | |
5944b2ce | 919 | cd_dbg(CD_CLOSE, "%s: No DVD+RW\n", cdi->name); |
1da177e4 LT |
920 | return; |
921 | } | |
922 | ||
923 | if (!cdi->media_written) { | |
5944b2ce | 924 | cd_dbg(CD_CLOSE, "%s: DVD+RW media clean\n", cdi->name); |
1da177e4 LT |
925 | return; |
926 | } | |
927 | ||
e597cd09 | 928 | pr_info("%s: dirty DVD+RW media, \"finalizing\"\n", cdi->name); |
1da177e4 LT |
929 | |
930 | init_cdrom_command(&cgc, NULL, 0, CGC_DATA_NONE); | |
931 | cgc.cmd[0] = GPCMD_FLUSH_CACHE; | |
932 | cgc.timeout = 30*HZ; | |
933 | cdi->ops->generic_packet(cdi, &cgc); | |
934 | ||
935 | init_cdrom_command(&cgc, NULL, 0, CGC_DATA_NONE); | |
936 | cgc.cmd[0] = GPCMD_CLOSE_TRACK; | |
937 | cgc.timeout = 3000*HZ; | |
938 | cgc.quiet = 1; | |
939 | cdi->ops->generic_packet(cdi, &cgc); | |
940 | ||
941 | init_cdrom_command(&cgc, NULL, 0, CGC_DATA_NONE); | |
942 | cgc.cmd[0] = GPCMD_CLOSE_TRACK; | |
943 | cgc.cmd[2] = 2; /* Close session */ | |
944 | cgc.quiet = 1; | |
945 | cgc.timeout = 3000*HZ; | |
946 | cdi->ops->generic_packet(cdi, &cgc); | |
947 | ||
948 | cdi->media_written = 0; | |
949 | } | |
950 | ||
951 | static int cdrom_close_write(struct cdrom_device_info *cdi) | |
952 | { | |
953 | #if 0 | |
954 | return cdrom_flush_cache(cdi); | |
955 | #else | |
956 | return 0; | |
957 | #endif | |
958 | } | |
959 | ||
960 | /* We use the open-option O_NONBLOCK to indicate that the | |
961 | * purpose of opening is only for subsequent ioctl() calls; no device | |
962 | * integrity checks are performed. | |
963 | * | |
964 | * We hope that all cd-player programs will adopt this convention. It | |
965 | * is in their own interest: device control becomes a lot easier | |
966 | * this way. | |
967 | */ | |
bbc1cc97 | 968 | int cdrom_open(struct cdrom_device_info *cdi, struct block_device *bdev, fmode_t mode) |
1da177e4 LT |
969 | { |
970 | int ret; | |
971 | ||
5944b2ce | 972 | cd_dbg(CD_OPEN, "entering cdrom_open\n"); |
1da177e4 | 973 | |
bf2253a6 TH |
974 | /* open is event synchronization point, check events first */ |
975 | check_disk_change(bdev); | |
976 | ||
1da177e4 LT |
977 | /* if this was a O_NONBLOCK open and we should honor the flags, |
978 | * do a quick open without drive/disc integrity checks. */ | |
979 | cdi->use_count++; | |
bbc1cc97 | 980 | if ((mode & FMODE_NDELAY) && (cdi->options & CDO_USE_FFLAGS)) { |
1da177e4 LT |
981 | ret = cdi->ops->open(cdi, 1); |
982 | } else { | |
983 | ret = open_for_data(cdi); | |
984 | if (ret) | |
985 | goto err; | |
986 | cdrom_mmc3_profile(cdi); | |
bbc1cc97 | 987 | if (mode & FMODE_WRITE) { |
1da177e4 LT |
988 | ret = -EROFS; |
989 | if (cdrom_open_write(cdi)) | |
16070428 | 990 | goto err_release; |
1da177e4 | 991 | if (!CDROM_CAN(CDC_RAM)) |
16070428 | 992 | goto err_release; |
1da177e4 LT |
993 | ret = 0; |
994 | cdi->media_written = 0; | |
995 | } | |
996 | } | |
997 | ||
998 | if (ret) | |
999 | goto err; | |
1000 | ||
5944b2ce JP |
1001 | cd_dbg(CD_OPEN, "Use count for \"/dev/%s\" now %d\n", |
1002 | cdi->name, cdi->use_count); | |
1da177e4 | 1003 | return 0; |
16070428 | 1004 | err_release: |
ae3ba4fd AV |
1005 | if (CDROM_CAN(CDC_LOCK) && cdi->options & CDO_LOCK) { |
1006 | cdi->ops->lock_door(cdi, 0); | |
5944b2ce | 1007 | cd_dbg(CD_OPEN, "door unlocked\n"); |
ae3ba4fd | 1008 | } |
16070428 | 1009 | cdi->ops->release(cdi); |
1da177e4 LT |
1010 | err: |
1011 | cdi->use_count--; | |
1012 | return ret; | |
1013 | } | |
1014 | ||
1015 | static | |
1016 | int open_for_data(struct cdrom_device_info * cdi) | |
1017 | { | |
1018 | int ret; | |
1019 | struct cdrom_device_ops *cdo = cdi->ops; | |
1020 | tracktype tracks; | |
5944b2ce | 1021 | cd_dbg(CD_OPEN, "entering open_for_data\n"); |
1da177e4 LT |
1022 | /* Check if the driver can report drive status. If it can, we |
1023 | can do clever things. If it can't, well, we at least tried! */ | |
1024 | if (cdo->drive_status != NULL) { | |
1025 | ret = cdo->drive_status(cdi, CDSL_CURRENT); | |
5944b2ce | 1026 | cd_dbg(CD_OPEN, "drive_status=%d\n", ret); |
1da177e4 | 1027 | if (ret == CDS_TRAY_OPEN) { |
5944b2ce | 1028 | cd_dbg(CD_OPEN, "the tray is open...\n"); |
1da177e4 LT |
1029 | /* can/may i close it? */ |
1030 | if (CDROM_CAN(CDC_CLOSE_TRAY) && | |
1031 | cdi->options & CDO_AUTO_CLOSE) { | |
5944b2ce | 1032 | cd_dbg(CD_OPEN, "trying to close the tray\n"); |
1da177e4 LT |
1033 | ret=cdo->tray_move(cdi,0); |
1034 | if (ret) { | |
5944b2ce | 1035 | cd_dbg(CD_OPEN, "bummer. tried to close the tray but failed.\n"); |
1da177e4 LT |
1036 | /* Ignore the error from the low |
1037 | level driver. We don't care why it | |
1038 | couldn't close the tray. We only care | |
1039 | that there is no disc in the drive, | |
1040 | since that is the _REAL_ problem here.*/ | |
1041 | ret=-ENOMEDIUM; | |
1042 | goto clean_up_and_return; | |
1043 | } | |
1044 | } else { | |
5944b2ce | 1045 | cd_dbg(CD_OPEN, "bummer. this drive can't close the tray.\n"); |
1da177e4 LT |
1046 | ret=-ENOMEDIUM; |
1047 | goto clean_up_and_return; | |
1048 | } | |
1049 | /* Ok, the door should be closed now.. Check again */ | |
1050 | ret = cdo->drive_status(cdi, CDSL_CURRENT); | |
1051 | if ((ret == CDS_NO_DISC) || (ret==CDS_TRAY_OPEN)) { | |
5944b2ce JP |
1052 | cd_dbg(CD_OPEN, "bummer. the tray is still not closed.\n"); |
1053 | cd_dbg(CD_OPEN, "tray might not contain a medium\n"); | |
1da177e4 LT |
1054 | ret=-ENOMEDIUM; |
1055 | goto clean_up_and_return; | |
1056 | } | |
5944b2ce | 1057 | cd_dbg(CD_OPEN, "the tray is now closed\n"); |
1da177e4 LT |
1058 | } |
1059 | /* the door should be closed now, check for the disc */ | |
1060 | ret = cdo->drive_status(cdi, CDSL_CURRENT); | |
1061 | if (ret!=CDS_DISC_OK) { | |
1062 | ret = -ENOMEDIUM; | |
1063 | goto clean_up_and_return; | |
1064 | } | |
1065 | } | |
1066 | cdrom_count_tracks(cdi, &tracks); | |
1067 | if (tracks.error == CDS_NO_DISC) { | |
5944b2ce | 1068 | cd_dbg(CD_OPEN, "bummer. no disc.\n"); |
1da177e4 LT |
1069 | ret=-ENOMEDIUM; |
1070 | goto clean_up_and_return; | |
1071 | } | |
1072 | /* CD-Players which don't use O_NONBLOCK, workman | |
1073 | * for example, need bit CDO_CHECK_TYPE cleared! */ | |
1074 | if (tracks.data==0) { | |
1075 | if (cdi->options & CDO_CHECK_TYPE) { | |
1076 | /* give people a warning shot, now that CDO_CHECK_TYPE | |
1077 | is the default case! */ | |
5944b2ce JP |
1078 | cd_dbg(CD_OPEN, "bummer. wrong media type.\n"); |
1079 | cd_dbg(CD_WARNING, "pid %d must open device O_NONBLOCK!\n", | |
1080 | (unsigned int)task_pid_nr(current)); | |
1da177e4 LT |
1081 | ret=-EMEDIUMTYPE; |
1082 | goto clean_up_and_return; | |
1083 | } | |
1084 | else { | |
5944b2ce | 1085 | cd_dbg(CD_OPEN, "wrong media type, but CDO_CHECK_TYPE not set\n"); |
1da177e4 LT |
1086 | } |
1087 | } | |
1088 | ||
5944b2ce | 1089 | cd_dbg(CD_OPEN, "all seems well, opening the devicen"); |
1da177e4 LT |
1090 | |
1091 | /* all seems well, we can open the device */ | |
1092 | ret = cdo->open(cdi, 0); /* open for data */ | |
5944b2ce | 1093 | cd_dbg(CD_OPEN, "opening the device gave me %d\n", ret); |
1da177e4 LT |
1094 | /* After all this careful checking, we shouldn't have problems |
1095 | opening the device, but we don't want the device locked if | |
1096 | this somehow fails... */ | |
1097 | if (ret) { | |
5944b2ce | 1098 | cd_dbg(CD_OPEN, "open device failed\n"); |
1da177e4 LT |
1099 | goto clean_up_and_return; |
1100 | } | |
1101 | if (CDROM_CAN(CDC_LOCK) && (cdi->options & CDO_LOCK)) { | |
1102 | cdo->lock_door(cdi, 1); | |
5944b2ce | 1103 | cd_dbg(CD_OPEN, "door locked\n"); |
1da177e4 | 1104 | } |
5944b2ce | 1105 | cd_dbg(CD_OPEN, "device opened successfully\n"); |
1da177e4 LT |
1106 | return ret; |
1107 | ||
1108 | /* Something failed. Try to unlock the drive, because some drivers | |
1109 | (notably ide-cd) lock the drive after every command. This produced | |
1110 | a nasty bug where after mount failed, the drive would remain locked! | |
1111 | This ensures that the drive gets unlocked after a mount fails. This | |
1112 | is a goto to avoid bloating the driver with redundant code. */ | |
1113 | clean_up_and_return: | |
5944b2ce | 1114 | cd_dbg(CD_OPEN, "open failed\n"); |
1da177e4 LT |
1115 | if (CDROM_CAN(CDC_LOCK) && cdi->options & CDO_LOCK) { |
1116 | cdo->lock_door(cdi, 0); | |
5944b2ce | 1117 | cd_dbg(CD_OPEN, "door unlocked\n"); |
1da177e4 LT |
1118 | } |
1119 | return ret; | |
1120 | } | |
1121 | ||
1122 | /* This code is similar to that in open_for_data. The routine is called | |
1123 | whenever an audio play operation is requested. | |
1124 | */ | |
ecb80c6a AB |
1125 | static int check_for_audio_disc(struct cdrom_device_info * cdi, |
1126 | struct cdrom_device_ops * cdo) | |
1da177e4 LT |
1127 | { |
1128 | int ret; | |
1129 | tracktype tracks; | |
5944b2ce | 1130 | cd_dbg(CD_OPEN, "entering check_for_audio_disc\n"); |
1da177e4 LT |
1131 | if (!(cdi->options & CDO_CHECK_TYPE)) |
1132 | return 0; | |
1133 | if (cdo->drive_status != NULL) { | |
1134 | ret = cdo->drive_status(cdi, CDSL_CURRENT); | |
5944b2ce | 1135 | cd_dbg(CD_OPEN, "drive_status=%d\n", ret); |
1da177e4 | 1136 | if (ret == CDS_TRAY_OPEN) { |
5944b2ce | 1137 | cd_dbg(CD_OPEN, "the tray is open...\n"); |
1da177e4 LT |
1138 | /* can/may i close it? */ |
1139 | if (CDROM_CAN(CDC_CLOSE_TRAY) && | |
1140 | cdi->options & CDO_AUTO_CLOSE) { | |
5944b2ce | 1141 | cd_dbg(CD_OPEN, "trying to close the tray\n"); |
1da177e4 LT |
1142 | ret=cdo->tray_move(cdi,0); |
1143 | if (ret) { | |
5944b2ce | 1144 | cd_dbg(CD_OPEN, "bummer. tried to close tray but failed.\n"); |
1da177e4 LT |
1145 | /* Ignore the error from the low |
1146 | level driver. We don't care why it | |
1147 | couldn't close the tray. We only care | |
1148 | that there is no disc in the drive, | |
1149 | since that is the _REAL_ problem here.*/ | |
1150 | return -ENOMEDIUM; | |
1151 | } | |
1152 | } else { | |
5944b2ce | 1153 | cd_dbg(CD_OPEN, "bummer. this driver can't close the tray.\n"); |
1da177e4 LT |
1154 | return -ENOMEDIUM; |
1155 | } | |
1156 | /* Ok, the door should be closed now.. Check again */ | |
1157 | ret = cdo->drive_status(cdi, CDSL_CURRENT); | |
1158 | if ((ret == CDS_NO_DISC) || (ret==CDS_TRAY_OPEN)) { | |
5944b2ce | 1159 | cd_dbg(CD_OPEN, "bummer. the tray is still not closed.\n"); |
1da177e4 LT |
1160 | return -ENOMEDIUM; |
1161 | } | |
1162 | if (ret!=CDS_DISC_OK) { | |
5944b2ce | 1163 | cd_dbg(CD_OPEN, "bummer. disc isn't ready.\n"); |
1da177e4 LT |
1164 | return -EIO; |
1165 | } | |
5944b2ce | 1166 | cd_dbg(CD_OPEN, "the tray is now closed\n"); |
1da177e4 LT |
1167 | } |
1168 | } | |
1169 | cdrom_count_tracks(cdi, &tracks); | |
1170 | if (tracks.error) | |
1171 | return(tracks.error); | |
1172 | ||
1173 | if (tracks.audio==0) | |
1174 | return -EMEDIUMTYPE; | |
1175 | ||
1176 | return 0; | |
1177 | } | |
1178 | ||
bbc1cc97 | 1179 | void cdrom_release(struct cdrom_device_info *cdi, fmode_t mode) |
1da177e4 LT |
1180 | { |
1181 | struct cdrom_device_ops *cdo = cdi->ops; | |
1182 | int opened_for_data; | |
1183 | ||
5944b2ce | 1184 | cd_dbg(CD_CLOSE, "entering cdrom_release\n"); |
1da177e4 LT |
1185 | |
1186 | if (cdi->use_count > 0) | |
1187 | cdi->use_count--; | |
35841f70 BP |
1188 | |
1189 | if (cdi->use_count == 0) { | |
5944b2ce JP |
1190 | cd_dbg(CD_CLOSE, "Use count for \"/dev/%s\" now zero\n", |
1191 | cdi->name); | |
1da177e4 | 1192 | cdrom_dvd_rw_close_write(cdi); |
35841f70 | 1193 | |
cdccaa94 | 1194 | if ((cdo->capability & CDC_LOCK) && !cdi->keeplocked) { |
5944b2ce | 1195 | cd_dbg(CD_CLOSE, "Unlocking door!\n"); |
35841f70 BP |
1196 | cdo->lock_door(cdi, 0); |
1197 | } | |
1da177e4 | 1198 | } |
35841f70 | 1199 | |
1da177e4 | 1200 | opened_for_data = !(cdi->options & CDO_USE_FFLAGS) || |
bbc1cc97 | 1201 | !(mode & FMODE_NDELAY); |
1da177e4 LT |
1202 | |
1203 | /* | |
1204 | * flush cache on last write release | |
1205 | */ | |
1206 | if (CDROM_CAN(CDC_RAM) && !cdi->use_count && cdi->for_data) | |
1207 | cdrom_close_write(cdi); | |
1208 | ||
1209 | cdo->release(cdi); | |
1210 | if (cdi->use_count == 0) { /* last process that closes dev*/ | |
1211 | if (opened_for_data && | |
1212 | cdi->options & CDO_AUTO_EJECT && CDROM_CAN(CDC_OPEN_TRAY)) | |
1213 | cdo->tray_move(cdi, 1); | |
1214 | } | |
1da177e4 LT |
1215 | } |
1216 | ||
1217 | static int cdrom_read_mech_status(struct cdrom_device_info *cdi, | |
1218 | struct cdrom_changer_info *buf) | |
1219 | { | |
1220 | struct packet_command cgc; | |
1221 | struct cdrom_device_ops *cdo = cdi->ops; | |
1222 | int length; | |
1223 | ||
1224 | /* | |
1225 | * Sanyo changer isn't spec compliant (doesn't use regular change | |
1226 | * LOAD_UNLOAD command, and it doesn't implement the mech status | |
1227 | * command below | |
1228 | */ | |
1229 | if (cdi->sanyo_slot) { | |
1230 | buf->hdr.nslots = 3; | |
1231 | buf->hdr.curslot = cdi->sanyo_slot == 3 ? 0 : cdi->sanyo_slot; | |
1232 | for (length = 0; length < 3; length++) { | |
1233 | buf->slots[length].disc_present = 1; | |
1234 | buf->slots[length].change = 0; | |
1235 | } | |
1236 | return 0; | |
1237 | } | |
1238 | ||
1239 | length = sizeof(struct cdrom_mechstat_header) + | |
1240 | cdi->capacity * sizeof(struct cdrom_slot); | |
1241 | ||
1242 | init_cdrom_command(&cgc, buf, length, CGC_DATA_READ); | |
1243 | cgc.cmd[0] = GPCMD_MECHANISM_STATUS; | |
1244 | cgc.cmd[8] = (length >> 8) & 0xff; | |
1245 | cgc.cmd[9] = length & 0xff; | |
1246 | return cdo->generic_packet(cdi, &cgc); | |
1247 | } | |
1248 | ||
1249 | static int cdrom_slot_status(struct cdrom_device_info *cdi, int slot) | |
1250 | { | |
1251 | struct cdrom_changer_info *info; | |
1252 | int ret; | |
1253 | ||
5944b2ce | 1254 | cd_dbg(CD_CHANGER, "entering cdrom_slot_status()\n"); |
1da177e4 LT |
1255 | if (cdi->sanyo_slot) |
1256 | return CDS_NO_INFO; | |
1257 | ||
1258 | info = kmalloc(sizeof(*info), GFP_KERNEL); | |
1259 | if (!info) | |
1260 | return -ENOMEM; | |
1261 | ||
1262 | if ((ret = cdrom_read_mech_status(cdi, info))) | |
1263 | goto out_free; | |
1264 | ||
1265 | if (info->slots[slot].disc_present) | |
1266 | ret = CDS_DISC_OK; | |
1267 | else | |
1268 | ret = CDS_NO_DISC; | |
1269 | ||
1270 | out_free: | |
1271 | kfree(info); | |
1272 | return ret; | |
1273 | } | |
1274 | ||
1275 | /* Return the number of slots for an ATAPI/SCSI cdrom, | |
1276 | * return 1 if not a changer. | |
1277 | */ | |
1278 | int cdrom_number_of_slots(struct cdrom_device_info *cdi) | |
1279 | { | |
1280 | int status; | |
1281 | int nslots = 1; | |
1282 | struct cdrom_changer_info *info; | |
1283 | ||
5944b2ce | 1284 | cd_dbg(CD_CHANGER, "entering cdrom_number_of_slots()\n"); |
1da177e4 LT |
1285 | /* cdrom_read_mech_status requires a valid value for capacity: */ |
1286 | cdi->capacity = 0; | |
1287 | ||
1288 | info = kmalloc(sizeof(*info), GFP_KERNEL); | |
1289 | if (!info) | |
1290 | return -ENOMEM; | |
1291 | ||
1292 | if ((status = cdrom_read_mech_status(cdi, info)) == 0) | |
1293 | nslots = info->hdr.nslots; | |
1294 | ||
1295 | kfree(info); | |
1296 | return nslots; | |
1297 | } | |
1298 | ||
1299 | ||
1300 | /* If SLOT < 0, unload the current slot. Otherwise, try to load SLOT. */ | |
1301 | static int cdrom_load_unload(struct cdrom_device_info *cdi, int slot) | |
1302 | { | |
1303 | struct packet_command cgc; | |
1304 | ||
5944b2ce | 1305 | cd_dbg(CD_CHANGER, "entering cdrom_load_unload()\n"); |
1da177e4 LT |
1306 | if (cdi->sanyo_slot && slot < 0) |
1307 | return 0; | |
1308 | ||
1309 | init_cdrom_command(&cgc, NULL, 0, CGC_DATA_NONE); | |
1310 | cgc.cmd[0] = GPCMD_LOAD_UNLOAD; | |
1311 | cgc.cmd[4] = 2 + (slot >= 0); | |
1312 | cgc.cmd[8] = slot; | |
1313 | cgc.timeout = 60 * HZ; | |
1314 | ||
1315 | /* The Sanyo 3 CD changer uses byte 7 of the | |
1316 | GPCMD_TEST_UNIT_READY to command to switch CDs instead of | |
1317 | using the GPCMD_LOAD_UNLOAD opcode. */ | |
1318 | if (cdi->sanyo_slot && -1 < slot) { | |
1319 | cgc.cmd[0] = GPCMD_TEST_UNIT_READY; | |
1320 | cgc.cmd[7] = slot; | |
1321 | cgc.cmd[4] = cgc.cmd[8] = 0; | |
1322 | cdi->sanyo_slot = slot ? slot : 3; | |
1323 | } | |
1324 | ||
1325 | return cdi->ops->generic_packet(cdi, &cgc); | |
1326 | } | |
1327 | ||
1328 | static int cdrom_select_disc(struct cdrom_device_info *cdi, int slot) | |
1329 | { | |
1330 | struct cdrom_changer_info *info; | |
1331 | int curslot; | |
1332 | int ret; | |
1333 | ||
5944b2ce | 1334 | cd_dbg(CD_CHANGER, "entering cdrom_select_disc()\n"); |
1da177e4 LT |
1335 | if (!CDROM_CAN(CDC_SELECT_DISC)) |
1336 | return -EDRIVE_CANT_DO_THIS; | |
1337 | ||
2d921729 TH |
1338 | if (cdi->ops->check_events) |
1339 | cdi->ops->check_events(cdi, 0, slot); | |
1340 | else | |
1341 | cdi->ops->media_changed(cdi, slot); | |
1da177e4 LT |
1342 | |
1343 | if (slot == CDSL_NONE) { | |
1344 | /* set media changed bits, on both queues */ | |
1345 | cdi->mc_flags = 0x3; | |
1346 | return cdrom_load_unload(cdi, -1); | |
1347 | } | |
1348 | ||
1349 | info = kmalloc(sizeof(*info), GFP_KERNEL); | |
1350 | if (!info) | |
1351 | return -ENOMEM; | |
1352 | ||
1353 | if ((ret = cdrom_read_mech_status(cdi, info))) { | |
1354 | kfree(info); | |
1355 | return ret; | |
1356 | } | |
1357 | ||
1358 | curslot = info->hdr.curslot; | |
1359 | kfree(info); | |
1360 | ||
cdccaa94 | 1361 | if (cdi->use_count > 1 || cdi->keeplocked) { |
1da177e4 LT |
1362 | if (slot == CDSL_CURRENT) { |
1363 | return curslot; | |
1364 | } else { | |
1365 | return -EBUSY; | |
1366 | } | |
1367 | } | |
1368 | ||
1369 | /* Specifying CDSL_CURRENT will attempt to load the currnet slot, | |
1370 | which is useful if it had been previously unloaded. | |
1371 | Whether it can or not, it returns the current slot. | |
1372 | Similarly, if slot happens to be the current one, we still | |
1373 | try and load it. */ | |
1374 | if (slot == CDSL_CURRENT) | |
1375 | slot = curslot; | |
1376 | ||
1377 | /* set media changed bits on both queues */ | |
1378 | cdi->mc_flags = 0x3; | |
1379 | if ((ret = cdrom_load_unload(cdi, slot))) | |
1380 | return ret; | |
1381 | ||
1382 | return slot; | |
1383 | } | |
1384 | ||
2d921729 TH |
1385 | /* |
1386 | * As cdrom implements an extra ioctl consumer for media changed | |
1387 | * event, it needs to buffer ->check_events() output, such that event | |
1388 | * is not lost for both the usual VFS and ioctl paths. | |
1389 | * cdi->{vfs|ioctl}_events are used to buffer pending events for each | |
1390 | * path. | |
1391 | * | |
1392 | * XXX: Locking is non-existent. cdi->ops->check_events() can be | |
1393 | * called in parallel and buffering fields are accessed without any | |
1394 | * exclusion. The original media_changed code had the same problem. | |
1395 | * It might be better to simply deprecate CDROM_MEDIA_CHANGED ioctl | |
1396 | * and remove this cruft altogether. It doesn't have much usefulness | |
1397 | * at this point. | |
1398 | */ | |
1399 | static void cdrom_update_events(struct cdrom_device_info *cdi, | |
1400 | unsigned int clearing) | |
1401 | { | |
1402 | unsigned int events; | |
1403 | ||
1404 | events = cdi->ops->check_events(cdi, clearing, CDSL_CURRENT); | |
1405 | cdi->vfs_events |= events; | |
1406 | cdi->ioctl_events |= events; | |
1407 | } | |
1408 | ||
1409 | unsigned int cdrom_check_events(struct cdrom_device_info *cdi, | |
1410 | unsigned int clearing) | |
1411 | { | |
1412 | unsigned int events; | |
1413 | ||
1414 | cdrom_update_events(cdi, clearing); | |
1415 | events = cdi->vfs_events; | |
1416 | cdi->vfs_events = 0; | |
1417 | return events; | |
1418 | } | |
30a7caab | 1419 | EXPORT_SYMBOL(cdrom_check_events); |
2d921729 | 1420 | |
1da177e4 LT |
1421 | /* We want to make media_changed accessible to the user through an |
1422 | * ioctl. The main problem now is that we must double-buffer the | |
1423 | * low-level implementation, to assure that the VFS and the user both | |
1424 | * see a medium change once. | |
1425 | */ | |
1426 | ||
1427 | static | |
1428 | int media_changed(struct cdrom_device_info *cdi, int queue) | |
1429 | { | |
1430 | unsigned int mask = (1 << (queue & 1)); | |
1431 | int ret = !!(cdi->mc_flags & mask); | |
2d921729 | 1432 | bool changed; |
1da177e4 LT |
1433 | |
1434 | if (!CDROM_CAN(CDC_MEDIA_CHANGED)) | |
2d921729 TH |
1435 | return ret; |
1436 | ||
1da177e4 | 1437 | /* changed since last call? */ |
2d921729 TH |
1438 | if (cdi->ops->check_events) { |
1439 | BUG_ON(!queue); /* shouldn't be called from VFS path */ | |
1440 | cdrom_update_events(cdi, DISK_EVENT_MEDIA_CHANGE); | |
1441 | changed = cdi->ioctl_events & DISK_EVENT_MEDIA_CHANGE; | |
1442 | cdi->ioctl_events = 0; | |
1443 | } else | |
1444 | changed = cdi->ops->media_changed(cdi, CDSL_CURRENT); | |
1445 | ||
1446 | if (changed) { | |
1da177e4 LT |
1447 | cdi->mc_flags = 0x3; /* set bit on both queues */ |
1448 | ret |= 1; | |
1449 | cdi->media_written = 0; | |
1450 | } | |
2d921729 | 1451 | |
1da177e4 LT |
1452 | cdi->mc_flags &= ~mask; /* clear bit */ |
1453 | return ret; | |
1454 | } | |
1455 | ||
1456 | int cdrom_media_changed(struct cdrom_device_info *cdi) | |
1457 | { | |
1458 | /* This talks to the VFS, which doesn't like errors - just 1 or 0. | |
1459 | * Returning "0" is always safe (media hasn't been changed). Do that | |
1460 | * if the low-level cdrom driver dosn't support media changed. */ | |
1461 | if (cdi == NULL || cdi->ops->media_changed == NULL) | |
1462 | return 0; | |
1463 | if (!CDROM_CAN(CDC_MEDIA_CHANGED)) | |
1464 | return 0; | |
1465 | return media_changed(cdi, 0); | |
1466 | } | |
1467 | ||
1468 | /* badly broken, I know. Is due for a fixup anytime. */ | |
1469 | static void cdrom_count_tracks(struct cdrom_device_info *cdi, tracktype* tracks) | |
1470 | { | |
1471 | struct cdrom_tochdr header; | |
1472 | struct cdrom_tocentry entry; | |
1473 | int ret, i; | |
1474 | tracks->data=0; | |
1475 | tracks->audio=0; | |
1476 | tracks->cdi=0; | |
1477 | tracks->xa=0; | |
1478 | tracks->error=0; | |
5944b2ce | 1479 | cd_dbg(CD_COUNT_TRACKS, "entering cdrom_count_tracks\n"); |
1da177e4 LT |
1480 | /* Grab the TOC header so we can see how many tracks there are */ |
1481 | if ((ret = cdi->ops->audio_ioctl(cdi, CDROMREADTOCHDR, &header))) { | |
1482 | if (ret == -ENOMEDIUM) | |
1483 | tracks->error = CDS_NO_DISC; | |
1484 | else | |
1485 | tracks->error = CDS_NO_INFO; | |
1486 | return; | |
1487 | } | |
1488 | /* check what type of tracks are on this disc */ | |
1489 | entry.cdte_format = CDROM_MSF; | |
1490 | for (i = header.cdth_trk0; i <= header.cdth_trk1; i++) { | |
1491 | entry.cdte_track = i; | |
1492 | if (cdi->ops->audio_ioctl(cdi, CDROMREADTOCENTRY, &entry)) { | |
1493 | tracks->error=CDS_NO_INFO; | |
1494 | return; | |
1495 | } | |
1496 | if (entry.cdte_ctrl & CDROM_DATA_TRACK) { | |
1497 | if (entry.cdte_format == 0x10) | |
1498 | tracks->cdi++; | |
1499 | else if (entry.cdte_format == 0x20) | |
1500 | tracks->xa++; | |
1501 | else | |
1502 | tracks->data++; | |
1503 | } else | |
1504 | tracks->audio++; | |
5944b2ce | 1505 | cd_dbg(CD_COUNT_TRACKS, "track %d: format=%d, ctrl=%d\n", |
1da177e4 LT |
1506 | i, entry.cdte_format, entry.cdte_ctrl); |
1507 | } | |
5944b2ce JP |
1508 | cd_dbg(CD_COUNT_TRACKS, "disc has %d tracks: %d=audio %d=data %d=Cd-I %d=XA\n", |
1509 | header.cdth_trk1, tracks->audio, tracks->data, | |
1510 | tracks->cdi, tracks->xa); | |
1da177e4 LT |
1511 | } |
1512 | ||
1513 | /* Requests to the low-level drivers will /always/ be done in the | |
1514 | following format convention: | |
1515 | ||
1516 | CDROM_LBA: all data-related requests. | |
1517 | CDROM_MSF: all audio-related requests. | |
1518 | ||
1519 | However, a low-level implementation is allowed to refuse this | |
1520 | request, and return information in its own favorite format. | |
1521 | ||
1522 | It doesn't make sense /at all/ to ask for a play_audio in LBA | |
1523 | format, or ask for multi-session info in MSF format. However, for | |
1524 | backward compatibility these format requests will be satisfied, but | |
1525 | the requests to the low-level drivers will be sanitized in the more | |
1526 | meaningful format indicated above. | |
1527 | */ | |
1528 | ||
1529 | static | |
1530 | void sanitize_format(union cdrom_addr *addr, | |
1531 | u_char * curr, u_char requested) | |
1532 | { | |
1533 | if (*curr == requested) | |
1534 | return; /* nothing to be done! */ | |
1535 | if (requested == CDROM_LBA) { | |
1536 | addr->lba = (int) addr->msf.frame + | |
1537 | 75 * (addr->msf.second - 2 + 60 * addr->msf.minute); | |
1538 | } else { /* CDROM_MSF */ | |
1539 | int lba = addr->lba; | |
1540 | addr->msf.frame = lba % 75; | |
1541 | lba /= 75; | |
1542 | lba += 2; | |
1543 | addr->msf.second = lba % 60; | |
1544 | addr->msf.minute = lba / 60; | |
1545 | } | |
1546 | *curr = requested; | |
1547 | } | |
1548 | ||
1549 | void init_cdrom_command(struct packet_command *cgc, void *buf, int len, | |
1550 | int type) | |
1551 | { | |
1552 | memset(cgc, 0, sizeof(struct packet_command)); | |
1553 | if (buf) | |
1554 | memset(buf, 0, len); | |
1555 | cgc->buffer = (char *) buf; | |
1556 | cgc->buflen = len; | |
1557 | cgc->data_direction = type; | |
2e11c207 | 1558 | cgc->timeout = CDROM_DEF_TIMEOUT; |
1da177e4 LT |
1559 | } |
1560 | ||
1561 | /* DVD handling */ | |
1562 | ||
1563 | #define copy_key(dest,src) memcpy((dest), (src), sizeof(dvd_key)) | |
1564 | #define copy_chal(dest,src) memcpy((dest), (src), sizeof(dvd_challenge)) | |
1565 | ||
1566 | static void setup_report_key(struct packet_command *cgc, unsigned agid, unsigned type) | |
1567 | { | |
1568 | cgc->cmd[0] = GPCMD_REPORT_KEY; | |
1569 | cgc->cmd[10] = type | (agid << 6); | |
1570 | switch (type) { | |
1571 | case 0: case 8: case 5: { | |
1572 | cgc->buflen = 8; | |
1573 | break; | |
1574 | } | |
1575 | case 1: { | |
1576 | cgc->buflen = 16; | |
1577 | break; | |
1578 | } | |
1579 | case 2: case 4: { | |
1580 | cgc->buflen = 12; | |
1581 | break; | |
1582 | } | |
1583 | } | |
1584 | cgc->cmd[9] = cgc->buflen; | |
1585 | cgc->data_direction = CGC_DATA_READ; | |
1586 | } | |
1587 | ||
1588 | static void setup_send_key(struct packet_command *cgc, unsigned agid, unsigned type) | |
1589 | { | |
1590 | cgc->cmd[0] = GPCMD_SEND_KEY; | |
1591 | cgc->cmd[10] = type | (agid << 6); | |
1592 | switch (type) { | |
1593 | case 1: { | |
1594 | cgc->buflen = 16; | |
1595 | break; | |
1596 | } | |
1597 | case 3: { | |
1598 | cgc->buflen = 12; | |
1599 | break; | |
1600 | } | |
1601 | case 6: { | |
1602 | cgc->buflen = 8; | |
1603 | break; | |
1604 | } | |
1605 | } | |
1606 | cgc->cmd[9] = cgc->buflen; | |
1607 | cgc->data_direction = CGC_DATA_WRITE; | |
1608 | } | |
1609 | ||
1610 | static int dvd_do_auth(struct cdrom_device_info *cdi, dvd_authinfo *ai) | |
1611 | { | |
1612 | int ret; | |
fce53847 | 1613 | u_char buf[20]; |
1da177e4 LT |
1614 | struct packet_command cgc; |
1615 | struct cdrom_device_ops *cdo = cdi->ops; | |
fce53847 | 1616 | rpc_state_t rpc_state; |
1da177e4 | 1617 | |
fce53847 | 1618 | memset(buf, 0, sizeof(buf)); |
1da177e4 LT |
1619 | init_cdrom_command(&cgc, buf, 0, CGC_DATA_READ); |
1620 | ||
1621 | switch (ai->type) { | |
1622 | /* LU data send */ | |
1623 | case DVD_LU_SEND_AGID: | |
5944b2ce | 1624 | cd_dbg(CD_DVD, "entering DVD_LU_SEND_AGID\n"); |
1da177e4 LT |
1625 | cgc.quiet = 1; |
1626 | setup_report_key(&cgc, ai->lsa.agid, 0); | |
1627 | ||
1628 | if ((ret = cdo->generic_packet(cdi, &cgc))) | |
fce53847 | 1629 | return ret; |
1da177e4 LT |
1630 | |
1631 | ai->lsa.agid = buf[7] >> 6; | |
1632 | /* Returning data, let host change state */ | |
1633 | break; | |
1634 | ||
1635 | case DVD_LU_SEND_KEY1: | |
5944b2ce | 1636 | cd_dbg(CD_DVD, "entering DVD_LU_SEND_KEY1\n"); |
1da177e4 LT |
1637 | setup_report_key(&cgc, ai->lsk.agid, 2); |
1638 | ||
1639 | if ((ret = cdo->generic_packet(cdi, &cgc))) | |
fce53847 | 1640 | return ret; |
1da177e4 LT |
1641 | |
1642 | copy_key(ai->lsk.key, &buf[4]); | |
1643 | /* Returning data, let host change state */ | |
1644 | break; | |
1645 | ||
1646 | case DVD_LU_SEND_CHALLENGE: | |
5944b2ce | 1647 | cd_dbg(CD_DVD, "entering DVD_LU_SEND_CHALLENGE\n"); |
1da177e4 LT |
1648 | setup_report_key(&cgc, ai->lsc.agid, 1); |
1649 | ||
1650 | if ((ret = cdo->generic_packet(cdi, &cgc))) | |
fce53847 | 1651 | return ret; |
1da177e4 LT |
1652 | |
1653 | copy_chal(ai->lsc.chal, &buf[4]); | |
1654 | /* Returning data, let host change state */ | |
1655 | break; | |
1656 | ||
1657 | /* Post-auth key */ | |
1658 | case DVD_LU_SEND_TITLE_KEY: | |
5944b2ce | 1659 | cd_dbg(CD_DVD, "entering DVD_LU_SEND_TITLE_KEY\n"); |
1da177e4 LT |
1660 | cgc.quiet = 1; |
1661 | setup_report_key(&cgc, ai->lstk.agid, 4); | |
1662 | cgc.cmd[5] = ai->lstk.lba; | |
1663 | cgc.cmd[4] = ai->lstk.lba >> 8; | |
1664 | cgc.cmd[3] = ai->lstk.lba >> 16; | |
1665 | cgc.cmd[2] = ai->lstk.lba >> 24; | |
1666 | ||
1667 | if ((ret = cdo->generic_packet(cdi, &cgc))) | |
fce53847 | 1668 | return ret; |
1da177e4 LT |
1669 | |
1670 | ai->lstk.cpm = (buf[4] >> 7) & 1; | |
1671 | ai->lstk.cp_sec = (buf[4] >> 6) & 1; | |
1672 | ai->lstk.cgms = (buf[4] >> 4) & 3; | |
1673 | copy_key(ai->lstk.title_key, &buf[5]); | |
1674 | /* Returning data, let host change state */ | |
1675 | break; | |
1676 | ||
1677 | case DVD_LU_SEND_ASF: | |
5944b2ce | 1678 | cd_dbg(CD_DVD, "entering DVD_LU_SEND_ASF\n"); |
1da177e4 LT |
1679 | setup_report_key(&cgc, ai->lsasf.agid, 5); |
1680 | ||
1681 | if ((ret = cdo->generic_packet(cdi, &cgc))) | |
fce53847 | 1682 | return ret; |
1da177e4 LT |
1683 | |
1684 | ai->lsasf.asf = buf[7] & 1; | |
1685 | break; | |
1686 | ||
1687 | /* LU data receive (LU changes state) */ | |
1688 | case DVD_HOST_SEND_CHALLENGE: | |
5944b2ce | 1689 | cd_dbg(CD_DVD, "entering DVD_HOST_SEND_CHALLENGE\n"); |
1da177e4 LT |
1690 | setup_send_key(&cgc, ai->hsc.agid, 1); |
1691 | buf[1] = 0xe; | |
1692 | copy_chal(&buf[4], ai->hsc.chal); | |
1693 | ||
1694 | if ((ret = cdo->generic_packet(cdi, &cgc))) | |
fce53847 | 1695 | return ret; |
1da177e4 LT |
1696 | |
1697 | ai->type = DVD_LU_SEND_KEY1; | |
1698 | break; | |
1699 | ||
1700 | case DVD_HOST_SEND_KEY2: | |
5944b2ce | 1701 | cd_dbg(CD_DVD, "entering DVD_HOST_SEND_KEY2\n"); |
1da177e4 LT |
1702 | setup_send_key(&cgc, ai->hsk.agid, 3); |
1703 | buf[1] = 0xa; | |
1704 | copy_key(&buf[4], ai->hsk.key); | |
1705 | ||
1706 | if ((ret = cdo->generic_packet(cdi, &cgc))) { | |
1707 | ai->type = DVD_AUTH_FAILURE; | |
fce53847 | 1708 | return ret; |
1da177e4 LT |
1709 | } |
1710 | ai->type = DVD_AUTH_ESTABLISHED; | |
1711 | break; | |
1712 | ||
1713 | /* Misc */ | |
1714 | case DVD_INVALIDATE_AGID: | |
1715 | cgc.quiet = 1; | |
5944b2ce | 1716 | cd_dbg(CD_DVD, "entering DVD_INVALIDATE_AGID\n"); |
1da177e4 LT |
1717 | setup_report_key(&cgc, ai->lsa.agid, 0x3f); |
1718 | if ((ret = cdo->generic_packet(cdi, &cgc))) | |
fce53847 | 1719 | return ret; |
1da177e4 LT |
1720 | break; |
1721 | ||
1722 | /* Get region settings */ | |
1723 | case DVD_LU_SEND_RPC_STATE: | |
5944b2ce | 1724 | cd_dbg(CD_DVD, "entering DVD_LU_SEND_RPC_STATE\n"); |
1da177e4 | 1725 | setup_report_key(&cgc, 0, 8); |
fce53847 FT |
1726 | memset(&rpc_state, 0, sizeof(rpc_state_t)); |
1727 | cgc.buffer = (char *) &rpc_state; | |
1da177e4 LT |
1728 | |
1729 | if ((ret = cdo->generic_packet(cdi, &cgc))) | |
fce53847 | 1730 | return ret; |
1da177e4 | 1731 | |
fce53847 FT |
1732 | ai->lrpcs.type = rpc_state.type_code; |
1733 | ai->lrpcs.vra = rpc_state.vra; | |
1734 | ai->lrpcs.ucca = rpc_state.ucca; | |
1735 | ai->lrpcs.region_mask = rpc_state.region_mask; | |
1736 | ai->lrpcs.rpc_scheme = rpc_state.rpc_scheme; | |
1da177e4 LT |
1737 | break; |
1738 | ||
1739 | /* Set region settings */ | |
1740 | case DVD_HOST_SEND_RPC_STATE: | |
5944b2ce | 1741 | cd_dbg(CD_DVD, "entering DVD_HOST_SEND_RPC_STATE\n"); |
1da177e4 LT |
1742 | setup_send_key(&cgc, 0, 6); |
1743 | buf[1] = 6; | |
1744 | buf[4] = ai->hrpcs.pdrc; | |
1745 | ||
1746 | if ((ret = cdo->generic_packet(cdi, &cgc))) | |
fce53847 | 1747 | return ret; |
1da177e4 LT |
1748 | break; |
1749 | ||
1750 | default: | |
5944b2ce | 1751 | cd_dbg(CD_WARNING, "Invalid DVD key ioctl (%d)\n", ai->type); |
fce53847 | 1752 | return -ENOTTY; |
1da177e4 | 1753 | } |
fce53847 FT |
1754 | |
1755 | return 0; | |
1da177e4 LT |
1756 | } |
1757 | ||
d194139c MS |
1758 | static int dvd_read_physical(struct cdrom_device_info *cdi, dvd_struct *s, |
1759 | struct packet_command *cgc) | |
1da177e4 | 1760 | { |
fce53847 | 1761 | unsigned char buf[21], *base; |
1da177e4 | 1762 | struct dvd_layer *layer; |
1da177e4 LT |
1763 | struct cdrom_device_ops *cdo = cdi->ops; |
1764 | int ret, layer_num = s->physical.layer_num; | |
1765 | ||
1766 | if (layer_num >= DVD_LAYERS) | |
1767 | return -EINVAL; | |
1768 | ||
d194139c MS |
1769 | init_cdrom_command(cgc, buf, sizeof(buf), CGC_DATA_READ); |
1770 | cgc->cmd[0] = GPCMD_READ_DVD_STRUCTURE; | |
1771 | cgc->cmd[6] = layer_num; | |
1772 | cgc->cmd[7] = s->type; | |
1773 | cgc->cmd[9] = cgc->buflen & 0xff; | |
1da177e4 LT |
1774 | |
1775 | /* | |
1776 | * refrain from reporting errors on non-existing layers (mainly) | |
1777 | */ | |
d194139c | 1778 | cgc->quiet = 1; |
1da177e4 | 1779 | |
d194139c MS |
1780 | ret = cdo->generic_packet(cdi, cgc); |
1781 | if (ret) | |
fce53847 | 1782 | return ret; |
1da177e4 LT |
1783 | |
1784 | base = &buf[4]; | |
1785 | layer = &s->physical.layer[layer_num]; | |
1786 | ||
1787 | /* | |
1788 | * place the data... really ugly, but at least we won't have to | |
1789 | * worry about endianess in userspace. | |
1790 | */ | |
1791 | memset(layer, 0, sizeof(*layer)); | |
1792 | layer->book_version = base[0] & 0xf; | |
1793 | layer->book_type = base[0] >> 4; | |
1794 | layer->min_rate = base[1] & 0xf; | |
1795 | layer->disc_size = base[1] >> 4; | |
1796 | layer->layer_type = base[2] & 0xf; | |
1797 | layer->track_path = (base[2] >> 4) & 1; | |
1798 | layer->nlayers = (base[2] >> 5) & 3; | |
1799 | layer->track_density = base[3] & 0xf; | |
1800 | layer->linear_density = base[3] >> 4; | |
1801 | layer->start_sector = base[5] << 16 | base[6] << 8 | base[7]; | |
1802 | layer->end_sector = base[9] << 16 | base[10] << 8 | base[11]; | |
1803 | layer->end_sector_l0 = base[13] << 16 | base[14] << 8 | base[15]; | |
1804 | layer->bca = base[16] >> 7; | |
1805 | ||
fce53847 | 1806 | return 0; |
1da177e4 LT |
1807 | } |
1808 | ||
d194139c MS |
1809 | static int dvd_read_copyright(struct cdrom_device_info *cdi, dvd_struct *s, |
1810 | struct packet_command *cgc) | |
1da177e4 LT |
1811 | { |
1812 | int ret; | |
fce53847 | 1813 | u_char buf[8]; |
1da177e4 LT |
1814 | struct cdrom_device_ops *cdo = cdi->ops; |
1815 | ||
d194139c MS |
1816 | init_cdrom_command(cgc, buf, sizeof(buf), CGC_DATA_READ); |
1817 | cgc->cmd[0] = GPCMD_READ_DVD_STRUCTURE; | |
1818 | cgc->cmd[6] = s->copyright.layer_num; | |
1819 | cgc->cmd[7] = s->type; | |
1820 | cgc->cmd[8] = cgc->buflen >> 8; | |
1821 | cgc->cmd[9] = cgc->buflen & 0xff; | |
1da177e4 | 1822 | |
d194139c MS |
1823 | ret = cdo->generic_packet(cdi, cgc); |
1824 | if (ret) | |
fce53847 | 1825 | return ret; |
1da177e4 LT |
1826 | |
1827 | s->copyright.cpst = buf[4]; | |
1828 | s->copyright.rmi = buf[5]; | |
1829 | ||
fce53847 | 1830 | return 0; |
1da177e4 LT |
1831 | } |
1832 | ||
d194139c MS |
1833 | static int dvd_read_disckey(struct cdrom_device_info *cdi, dvd_struct *s, |
1834 | struct packet_command *cgc) | |
1da177e4 LT |
1835 | { |
1836 | int ret, size; | |
1837 | u_char *buf; | |
1da177e4 LT |
1838 | struct cdrom_device_ops *cdo = cdi->ops; |
1839 | ||
1840 | size = sizeof(s->disckey.value) + 4; | |
1841 | ||
d194139c MS |
1842 | buf = kmalloc(size, GFP_KERNEL); |
1843 | if (!buf) | |
1da177e4 LT |
1844 | return -ENOMEM; |
1845 | ||
d194139c MS |
1846 | init_cdrom_command(cgc, buf, size, CGC_DATA_READ); |
1847 | cgc->cmd[0] = GPCMD_READ_DVD_STRUCTURE; | |
1848 | cgc->cmd[7] = s->type; | |
1849 | cgc->cmd[8] = size >> 8; | |
1850 | cgc->cmd[9] = size & 0xff; | |
1851 | cgc->cmd[10] = s->disckey.agid << 6; | |
1da177e4 | 1852 | |
d194139c MS |
1853 | ret = cdo->generic_packet(cdi, cgc); |
1854 | if (!ret) | |
1da177e4 LT |
1855 | memcpy(s->disckey.value, &buf[4], sizeof(s->disckey.value)); |
1856 | ||
1857 | kfree(buf); | |
1858 | return ret; | |
1859 | } | |
1860 | ||
d194139c MS |
1861 | static int dvd_read_bca(struct cdrom_device_info *cdi, dvd_struct *s, |
1862 | struct packet_command *cgc) | |
1da177e4 | 1863 | { |
d194139c MS |
1864 | int ret, size = 4 + 188; |
1865 | u_char *buf; | |
1da177e4 LT |
1866 | struct cdrom_device_ops *cdo = cdi->ops; |
1867 | ||
d194139c MS |
1868 | buf = kmalloc(size, GFP_KERNEL); |
1869 | if (!buf) | |
1870 | return -ENOMEM; | |
1da177e4 | 1871 | |
d194139c MS |
1872 | init_cdrom_command(cgc, buf, size, CGC_DATA_READ); |
1873 | cgc->cmd[0] = GPCMD_READ_DVD_STRUCTURE; | |
1874 | cgc->cmd[7] = s->type; | |
1875 | cgc->cmd[9] = cgc->buflen & 0xff; | |
1876 | ||
1877 | ret = cdo->generic_packet(cdi, cgc); | |
1878 | if (ret) | |
1879 | goto out; | |
1da177e4 LT |
1880 | |
1881 | s->bca.len = buf[0] << 8 | buf[1]; | |
1882 | if (s->bca.len < 12 || s->bca.len > 188) { | |
5944b2ce JP |
1883 | cd_dbg(CD_WARNING, "Received invalid BCA length (%d)\n", |
1884 | s->bca.len); | |
d194139c MS |
1885 | ret = -EIO; |
1886 | goto out; | |
1da177e4 LT |
1887 | } |
1888 | memcpy(s->bca.value, &buf[4], s->bca.len); | |
d194139c MS |
1889 | ret = 0; |
1890 | out: | |
1891 | kfree(buf); | |
1892 | return ret; | |
1da177e4 LT |
1893 | } |
1894 | ||
d194139c MS |
1895 | static int dvd_read_manufact(struct cdrom_device_info *cdi, dvd_struct *s, |
1896 | struct packet_command *cgc) | |
1da177e4 LT |
1897 | { |
1898 | int ret = 0, size; | |
1899 | u_char *buf; | |
1da177e4 LT |
1900 | struct cdrom_device_ops *cdo = cdi->ops; |
1901 | ||
1902 | size = sizeof(s->manufact.value) + 4; | |
1903 | ||
d194139c MS |
1904 | buf = kmalloc(size, GFP_KERNEL); |
1905 | if (!buf) | |
1da177e4 LT |
1906 | return -ENOMEM; |
1907 | ||
d194139c MS |
1908 | init_cdrom_command(cgc, buf, size, CGC_DATA_READ); |
1909 | cgc->cmd[0] = GPCMD_READ_DVD_STRUCTURE; | |
1910 | cgc->cmd[7] = s->type; | |
1911 | cgc->cmd[8] = size >> 8; | |
1912 | cgc->cmd[9] = size & 0xff; | |
1da177e4 | 1913 | |
d194139c MS |
1914 | ret = cdo->generic_packet(cdi, cgc); |
1915 | if (ret) | |
1916 | goto out; | |
1da177e4 LT |
1917 | |
1918 | s->manufact.len = buf[0] << 8 | buf[1]; | |
aec9f377 | 1919 | if (s->manufact.len < 0) { |
5944b2ce JP |
1920 | cd_dbg(CD_WARNING, "Received invalid manufacture info length (%d)\n", |
1921 | s->manufact.len); | |
1da177e4 LT |
1922 | ret = -EIO; |
1923 | } else { | |
aec9f377 | 1924 | if (s->manufact.len > 2048) { |
5944b2ce JP |
1925 | cd_dbg(CD_WARNING, "Received invalid manufacture info length (%d): truncating to 2048\n", |
1926 | s->manufact.len); | |
aec9f377 AM |
1927 | s->manufact.len = 2048; |
1928 | } | |
1da177e4 LT |
1929 | memcpy(s->manufact.value, &buf[4], s->manufact.len); |
1930 | } | |
1931 | ||
d194139c | 1932 | out: |
1da177e4 LT |
1933 | kfree(buf); |
1934 | return ret; | |
1935 | } | |
1936 | ||
d194139c MS |
1937 | static int dvd_read_struct(struct cdrom_device_info *cdi, dvd_struct *s, |
1938 | struct packet_command *cgc) | |
1da177e4 LT |
1939 | { |
1940 | switch (s->type) { | |
1941 | case DVD_STRUCT_PHYSICAL: | |
d194139c | 1942 | return dvd_read_physical(cdi, s, cgc); |
1da177e4 LT |
1943 | |
1944 | case DVD_STRUCT_COPYRIGHT: | |
d194139c | 1945 | return dvd_read_copyright(cdi, s, cgc); |
1da177e4 LT |
1946 | |
1947 | case DVD_STRUCT_DISCKEY: | |
d194139c | 1948 | return dvd_read_disckey(cdi, s, cgc); |
1da177e4 LT |
1949 | |
1950 | case DVD_STRUCT_BCA: | |
d194139c | 1951 | return dvd_read_bca(cdi, s, cgc); |
1da177e4 LT |
1952 | |
1953 | case DVD_STRUCT_MANUFACT: | |
d194139c | 1954 | return dvd_read_manufact(cdi, s, cgc); |
1da177e4 LT |
1955 | |
1956 | default: | |
5944b2ce JP |
1957 | cd_dbg(CD_WARNING, ": Invalid DVD structure read requested (%d)\n", |
1958 | s->type); | |
1da177e4 LT |
1959 | return -EINVAL; |
1960 | } | |
1961 | } | |
1962 | ||
1963 | int cdrom_mode_sense(struct cdrom_device_info *cdi, | |
1964 | struct packet_command *cgc, | |
1965 | int page_code, int page_control) | |
1966 | { | |
1967 | struct cdrom_device_ops *cdo = cdi->ops; | |
1968 | ||
1969 | memset(cgc->cmd, 0, sizeof(cgc->cmd)); | |
1970 | ||
1971 | cgc->cmd[0] = GPCMD_MODE_SENSE_10; | |
1972 | cgc->cmd[2] = page_code | (page_control << 6); | |
1973 | cgc->cmd[7] = cgc->buflen >> 8; | |
1974 | cgc->cmd[8] = cgc->buflen & 0xff; | |
1975 | cgc->data_direction = CGC_DATA_READ; | |
1976 | return cdo->generic_packet(cdi, cgc); | |
1977 | } | |
1978 | ||
1979 | int cdrom_mode_select(struct cdrom_device_info *cdi, | |
1980 | struct packet_command *cgc) | |
1981 | { | |
1982 | struct cdrom_device_ops *cdo = cdi->ops; | |
1983 | ||
1984 | memset(cgc->cmd, 0, sizeof(cgc->cmd)); | |
1985 | memset(cgc->buffer, 0, 2); | |
1986 | cgc->cmd[0] = GPCMD_MODE_SELECT_10; | |
1987 | cgc->cmd[1] = 0x10; /* PF */ | |
1988 | cgc->cmd[7] = cgc->buflen >> 8; | |
1989 | cgc->cmd[8] = cgc->buflen & 0xff; | |
1990 | cgc->data_direction = CGC_DATA_WRITE; | |
1991 | return cdo->generic_packet(cdi, cgc); | |
1992 | } | |
1993 | ||
1994 | static int cdrom_read_subchannel(struct cdrom_device_info *cdi, | |
1995 | struct cdrom_subchnl *subchnl, int mcn) | |
1996 | { | |
1997 | struct cdrom_device_ops *cdo = cdi->ops; | |
1998 | struct packet_command cgc; | |
fce53847 | 1999 | char buffer[32]; |
1da177e4 LT |
2000 | int ret; |
2001 | ||
2002 | init_cdrom_command(&cgc, buffer, 16, CGC_DATA_READ); | |
2003 | cgc.cmd[0] = GPCMD_READ_SUBCHANNEL; | |
2004 | cgc.cmd[1] = 2; /* MSF addressing */ | |
2005 | cgc.cmd[2] = 0x40; /* request subQ data */ | |
2006 | cgc.cmd[3] = mcn ? 2 : 1; | |
2007 | cgc.cmd[8] = 16; | |
2008 | ||
2009 | if ((ret = cdo->generic_packet(cdi, &cgc))) | |
fce53847 | 2010 | return ret; |
1da177e4 LT |
2011 | |
2012 | subchnl->cdsc_audiostatus = cgc.buffer[1]; | |
2013 | subchnl->cdsc_format = CDROM_MSF; | |
2014 | subchnl->cdsc_ctrl = cgc.buffer[5] & 0xf; | |
2015 | subchnl->cdsc_trk = cgc.buffer[6]; | |
2016 | subchnl->cdsc_ind = cgc.buffer[7]; | |
2017 | ||
2018 | subchnl->cdsc_reladdr.msf.minute = cgc.buffer[13]; | |
2019 | subchnl->cdsc_reladdr.msf.second = cgc.buffer[14]; | |
2020 | subchnl->cdsc_reladdr.msf.frame = cgc.buffer[15]; | |
2021 | subchnl->cdsc_absaddr.msf.minute = cgc.buffer[9]; | |
2022 | subchnl->cdsc_absaddr.msf.second = cgc.buffer[10]; | |
2023 | subchnl->cdsc_absaddr.msf.frame = cgc.buffer[11]; | |
2024 | ||
fce53847 | 2025 | return 0; |
1da177e4 LT |
2026 | } |
2027 | ||
2028 | /* | |
2029 | * Specific READ_10 interface | |
2030 | */ | |
2031 | static int cdrom_read_cd(struct cdrom_device_info *cdi, | |
2032 | struct packet_command *cgc, int lba, | |
2033 | int blocksize, int nblocks) | |
2034 | { | |
2035 | struct cdrom_device_ops *cdo = cdi->ops; | |
2036 | ||
2037 | memset(&cgc->cmd, 0, sizeof(cgc->cmd)); | |
2038 | cgc->cmd[0] = GPCMD_READ_10; | |
2039 | cgc->cmd[2] = (lba >> 24) & 0xff; | |
2040 | cgc->cmd[3] = (lba >> 16) & 0xff; | |
2041 | cgc->cmd[4] = (lba >> 8) & 0xff; | |
2042 | cgc->cmd[5] = lba & 0xff; | |
2043 | cgc->cmd[6] = (nblocks >> 16) & 0xff; | |
2044 | cgc->cmd[7] = (nblocks >> 8) & 0xff; | |
2045 | cgc->cmd[8] = nblocks & 0xff; | |
2046 | cgc->buflen = blocksize * nblocks; | |
2047 | return cdo->generic_packet(cdi, cgc); | |
2048 | } | |
2049 | ||
2050 | /* very generic interface for reading the various types of blocks */ | |
2051 | static int cdrom_read_block(struct cdrom_device_info *cdi, | |
2052 | struct packet_command *cgc, | |
2053 | int lba, int nblocks, int format, int blksize) | |
2054 | { | |
2055 | struct cdrom_device_ops *cdo = cdi->ops; | |
2056 | ||
2057 | memset(&cgc->cmd, 0, sizeof(cgc->cmd)); | |
2058 | cgc->cmd[0] = GPCMD_READ_CD; | |
2059 | /* expected sector size - cdda,mode1,etc. */ | |
2060 | cgc->cmd[1] = format << 2; | |
2061 | /* starting address */ | |
2062 | cgc->cmd[2] = (lba >> 24) & 0xff; | |
2063 | cgc->cmd[3] = (lba >> 16) & 0xff; | |
2064 | cgc->cmd[4] = (lba >> 8) & 0xff; | |
2065 | cgc->cmd[5] = lba & 0xff; | |
2066 | /* number of blocks */ | |
2067 | cgc->cmd[6] = (nblocks >> 16) & 0xff; | |
2068 | cgc->cmd[7] = (nblocks >> 8) & 0xff; | |
2069 | cgc->cmd[8] = nblocks & 0xff; | |
2070 | cgc->buflen = blksize * nblocks; | |
2071 | ||
2072 | /* set the header info returned */ | |
2073 | switch (blksize) { | |
2074 | case CD_FRAMESIZE_RAW0 : cgc->cmd[9] = 0x58; break; | |
2075 | case CD_FRAMESIZE_RAW1 : cgc->cmd[9] = 0x78; break; | |
2076 | case CD_FRAMESIZE_RAW : cgc->cmd[9] = 0xf8; break; | |
2077 | default : cgc->cmd[9] = 0x10; | |
2078 | } | |
2079 | ||
2080 | return cdo->generic_packet(cdi, cgc); | |
2081 | } | |
2082 | ||
2083 | static int cdrom_read_cdda_old(struct cdrom_device_info *cdi, __u8 __user *ubuf, | |
2084 | int lba, int nframes) | |
2085 | { | |
2086 | struct packet_command cgc; | |
2087 | int ret = 0; | |
2088 | int nr; | |
2089 | ||
2090 | cdi->last_sense = 0; | |
2091 | ||
2092 | memset(&cgc, 0, sizeof(cgc)); | |
2093 | ||
2094 | /* | |
2095 | * start with will ra.nframes size, back down if alloc fails | |
2096 | */ | |
2097 | nr = nframes; | |
2098 | do { | |
2099 | cgc.buffer = kmalloc(CD_FRAMESIZE_RAW * nr, GFP_KERNEL); | |
2100 | if (cgc.buffer) | |
2101 | break; | |
2102 | ||
2103 | nr >>= 1; | |
2104 | } while (nr); | |
2105 | ||
2106 | if (!nr) | |
2107 | return -ENOMEM; | |
2108 | ||
1da177e4 LT |
2109 | cgc.data_direction = CGC_DATA_READ; |
2110 | while (nframes > 0) { | |
2111 | if (nr > nframes) | |
2112 | nr = nframes; | |
2113 | ||
2114 | ret = cdrom_read_block(cdi, &cgc, lba, nr, 1, CD_FRAMESIZE_RAW); | |
2115 | if (ret) | |
2116 | break; | |
822bfa51 | 2117 | if (copy_to_user(ubuf, cgc.buffer, CD_FRAMESIZE_RAW * nr)) { |
1da177e4 LT |
2118 | ret = -EFAULT; |
2119 | break; | |
2120 | } | |
2121 | ubuf += CD_FRAMESIZE_RAW * nr; | |
2122 | nframes -= nr; | |
2123 | lba += nr; | |
2124 | } | |
1da177e4 LT |
2125 | kfree(cgc.buffer); |
2126 | return ret; | |
2127 | } | |
2128 | ||
2129 | static int cdrom_read_cdda_bpc(struct cdrom_device_info *cdi, __u8 __user *ubuf, | |
2130 | int lba, int nframes) | |
2131 | { | |
165125e1 | 2132 | struct request_queue *q = cdi->disk->queue; |
1da177e4 LT |
2133 | struct request *rq; |
2134 | struct bio *bio; | |
2135 | unsigned int len; | |
2136 | int nr, ret = 0; | |
2137 | ||
2138 | if (!q) | |
2139 | return -ENXIO; | |
2140 | ||
2141 | cdi->last_sense = 0; | |
2142 | ||
2143 | while (nframes) { | |
2144 | nr = nframes; | |
2145 | if (cdi->cdda_method == CDDA_BPC_SINGLE) | |
2146 | nr = 1; | |
ae03bf63 MP |
2147 | if (nr * CD_FRAMESIZE_RAW > (queue_max_sectors(q) << 9)) |
2148 | nr = (queue_max_sectors(q) << 9) / CD_FRAMESIZE_RAW; | |
1da177e4 LT |
2149 | |
2150 | len = nr * CD_FRAMESIZE_RAW; | |
2151 | ||
febd7a5c AB |
2152 | rq = blk_get_request(q, READ, GFP_KERNEL); |
2153 | if (!rq) { | |
2154 | ret = -ENOMEM; | |
2155 | break; | |
2156 | } | |
2157 | ||
152e283f | 2158 | ret = blk_rq_map_user(q, rq, NULL, ubuf, len, GFP_KERNEL); |
febd7a5c AB |
2159 | if (ret) { |
2160 | blk_put_request(rq); | |
dd1cab95 | 2161 | break; |
febd7a5c | 2162 | } |
1da177e4 | 2163 | |
1da177e4 LT |
2164 | rq->cmd[0] = GPCMD_READ_CD; |
2165 | rq->cmd[1] = 1 << 2; | |
2166 | rq->cmd[2] = (lba >> 24) & 0xff; | |
2167 | rq->cmd[3] = (lba >> 16) & 0xff; | |
2168 | rq->cmd[4] = (lba >> 8) & 0xff; | |
2169 | rq->cmd[5] = lba & 0xff; | |
2170 | rq->cmd[6] = (nr >> 16) & 0xff; | |
2171 | rq->cmd[7] = (nr >> 8) & 0xff; | |
2172 | rq->cmd[8] = nr & 0xff; | |
2173 | rq->cmd[9] = 0xf8; | |
2174 | ||
2175 | rq->cmd_len = 12; | |
4aff5e23 | 2176 | rq->cmd_type = REQ_TYPE_BLOCK_PC; |
1da177e4 LT |
2177 | rq->timeout = 60 * HZ; |
2178 | bio = rq->bio; | |
2179 | ||
994ca9a1 | 2180 | if (blk_execute_rq(q, cdi->disk, rq, 0)) { |
1da177e4 LT |
2181 | struct request_sense *s = rq->sense; |
2182 | ret = -EIO; | |
2183 | cdi->last_sense = s->sense_key; | |
2184 | } | |
2185 | ||
8e5cfc45 | 2186 | if (blk_rq_unmap_user(bio)) |
1da177e4 | 2187 | ret = -EFAULT; |
febd7a5c | 2188 | blk_put_request(rq); |
1da177e4 LT |
2189 | |
2190 | if (ret) | |
2191 | break; | |
2192 | ||
2193 | nframes -= nr; | |
2194 | lba += nr; | |
2195 | ubuf += len; | |
2196 | } | |
2197 | ||
2198 | return ret; | |
2199 | } | |
2200 | ||
2201 | static int cdrom_read_cdda(struct cdrom_device_info *cdi, __u8 __user *ubuf, | |
2202 | int lba, int nframes) | |
2203 | { | |
2204 | int ret; | |
2205 | ||
2206 | if (cdi->cdda_method == CDDA_OLD) | |
2207 | return cdrom_read_cdda_old(cdi, ubuf, lba, nframes); | |
2208 | ||
2209 | retry: | |
2210 | /* | |
2211 | * for anything else than success and io error, we need to retry | |
2212 | */ | |
2213 | ret = cdrom_read_cdda_bpc(cdi, ubuf, lba, nframes); | |
2214 | if (!ret || ret != -EIO) | |
2215 | return ret; | |
2216 | ||
2217 | /* | |
2218 | * I've seen drives get sense 4/8/3 udma crc errors on multi | |
2219 | * frame dma, so drop to single frame dma if we need to | |
2220 | */ | |
2221 | if (cdi->cdda_method == CDDA_BPC_FULL && nframes > 1) { | |
e597cd09 | 2222 | pr_info("dropping to single frame dma\n"); |
1da177e4 LT |
2223 | cdi->cdda_method = CDDA_BPC_SINGLE; |
2224 | goto retry; | |
2225 | } | |
2226 | ||
2227 | /* | |
2228 | * so we have an io error of some sort with multi frame dma. if the | |
2229 | * condition wasn't a hardware error | |
2230 | * problems, not for any error | |
2231 | */ | |
2232 | if (cdi->last_sense != 0x04 && cdi->last_sense != 0x0b) | |
2233 | return ret; | |
2234 | ||
e597cd09 | 2235 | pr_info("dropping to old style cdda (sense=%x)\n", cdi->last_sense); |
1da177e4 LT |
2236 | cdi->cdda_method = CDDA_OLD; |
2237 | return cdrom_read_cdda_old(cdi, ubuf, lba, nframes); | |
2238 | } | |
2239 | ||
d2c5d4fc CH |
2240 | static int cdrom_ioctl_multisession(struct cdrom_device_info *cdi, |
2241 | void __user *argp) | |
1da177e4 | 2242 | { |
d2c5d4fc CH |
2243 | struct cdrom_multisession ms_info; |
2244 | u8 requested_format; | |
1da177e4 LT |
2245 | int ret; |
2246 | ||
5944b2ce | 2247 | cd_dbg(CD_DO_IOCTL, "entering CDROMMULTISESSION\n"); |
d2c5d4fc CH |
2248 | |
2249 | if (!(cdi->ops->capability & CDC_MULTI_SESSION)) | |
2250 | return -ENOSYS; | |
2251 | ||
2252 | if (copy_from_user(&ms_info, argp, sizeof(ms_info))) | |
2253 | return -EFAULT; | |
2254 | ||
2255 | requested_format = ms_info.addr_format; | |
2256 | if (requested_format != CDROM_MSF && requested_format != CDROM_LBA) | |
2257 | return -EINVAL; | |
2258 | ms_info.addr_format = CDROM_LBA; | |
2259 | ||
2260 | ret = cdi->ops->get_last_session(cdi, &ms_info); | |
2261 | if (ret) | |
1da177e4 LT |
2262 | return ret; |
2263 | ||
d2c5d4fc CH |
2264 | sanitize_format(&ms_info.addr, &ms_info.addr_format, requested_format); |
2265 | ||
2266 | if (copy_to_user(argp, &ms_info, sizeof(ms_info))) | |
2267 | return -EFAULT; | |
2268 | ||
5944b2ce | 2269 | cd_dbg(CD_DO_IOCTL, "CDROMMULTISESSION successful\n"); |
d2c5d4fc CH |
2270 | return 0; |
2271 | } | |
2272 | ||
2273 | static int cdrom_ioctl_eject(struct cdrom_device_info *cdi) | |
2274 | { | |
5944b2ce | 2275 | cd_dbg(CD_DO_IOCTL, "entering CDROMEJECT\n"); |
d2c5d4fc CH |
2276 | |
2277 | if (!CDROM_CAN(CDC_OPEN_TRAY)) | |
2278 | return -ENOSYS; | |
cdccaa94 | 2279 | if (cdi->use_count != 1 || cdi->keeplocked) |
d2c5d4fc CH |
2280 | return -EBUSY; |
2281 | if (CDROM_CAN(CDC_LOCK)) { | |
2282 | int ret = cdi->ops->lock_door(cdi, 0); | |
2283 | if (ret) | |
1da177e4 | 2284 | return ret; |
d2c5d4fc | 2285 | } |
1da177e4 | 2286 | |
d2c5d4fc CH |
2287 | return cdi->ops->tray_move(cdi, 1); |
2288 | } | |
1da177e4 | 2289 | |
d2c5d4fc CH |
2290 | static int cdrom_ioctl_closetray(struct cdrom_device_info *cdi) |
2291 | { | |
5944b2ce | 2292 | cd_dbg(CD_DO_IOCTL, "entering CDROMCLOSETRAY\n"); |
1da177e4 | 2293 | |
d2c5d4fc CH |
2294 | if (!CDROM_CAN(CDC_CLOSE_TRAY)) |
2295 | return -ENOSYS; | |
2296 | return cdi->ops->tray_move(cdi, 0); | |
2297 | } | |
1da177e4 | 2298 | |
d2c5d4fc CH |
2299 | static int cdrom_ioctl_eject_sw(struct cdrom_device_info *cdi, |
2300 | unsigned long arg) | |
2301 | { | |
5944b2ce | 2302 | cd_dbg(CD_DO_IOCTL, "entering CDROMEJECT_SW\n"); |
1da177e4 | 2303 | |
d2c5d4fc CH |
2304 | if (!CDROM_CAN(CDC_OPEN_TRAY)) |
2305 | return -ENOSYS; | |
cdccaa94 | 2306 | if (cdi->keeplocked) |
d2c5d4fc | 2307 | return -EBUSY; |
1da177e4 | 2308 | |
d2c5d4fc CH |
2309 | cdi->options &= ~(CDO_AUTO_CLOSE | CDO_AUTO_EJECT); |
2310 | if (arg) | |
2311 | cdi->options |= CDO_AUTO_CLOSE | CDO_AUTO_EJECT; | |
2312 | return 0; | |
2313 | } | |
1da177e4 | 2314 | |
d2c5d4fc CH |
2315 | static int cdrom_ioctl_media_changed(struct cdrom_device_info *cdi, |
2316 | unsigned long arg) | |
2317 | { | |
2318 | struct cdrom_changer_info *info; | |
2319 | int ret; | |
1da177e4 | 2320 | |
5944b2ce | 2321 | cd_dbg(CD_DO_IOCTL, "entering CDROM_MEDIA_CHANGED\n"); |
1da177e4 | 2322 | |
d2c5d4fc CH |
2323 | if (!CDROM_CAN(CDC_MEDIA_CHANGED)) |
2324 | return -ENOSYS; | |
1da177e4 | 2325 | |
d2c5d4fc CH |
2326 | /* cannot select disc or select current disc */ |
2327 | if (!CDROM_CAN(CDC_SELECT_DISC) || arg == CDSL_CURRENT) | |
2328 | return media_changed(cdi, 1); | |
1da177e4 | 2329 | |
d2c5d4fc CH |
2330 | if ((unsigned int)arg >= cdi->capacity) |
2331 | return -EINVAL; | |
1da177e4 | 2332 | |
d2c5d4fc CH |
2333 | info = kmalloc(sizeof(*info), GFP_KERNEL); |
2334 | if (!info) | |
2335 | return -ENOMEM; | |
1da177e4 | 2336 | |
d2c5d4fc CH |
2337 | ret = cdrom_read_mech_status(cdi, info); |
2338 | if (!ret) | |
2339 | ret = info->slots[arg].change; | |
2340 | kfree(info); | |
2341 | return ret; | |
2342 | } | |
1da177e4 | 2343 | |
d2c5d4fc CH |
2344 | static int cdrom_ioctl_set_options(struct cdrom_device_info *cdi, |
2345 | unsigned long arg) | |
2346 | { | |
5944b2ce | 2347 | cd_dbg(CD_DO_IOCTL, "entering CDROM_SET_OPTIONS\n"); |
1da177e4 | 2348 | |
d2c5d4fc CH |
2349 | /* |
2350 | * Options need to be in sync with capability. | |
2351 | * Too late for that, so we have to check each one separately. | |
2352 | */ | |
2353 | switch (arg) { | |
2354 | case CDO_USE_FFLAGS: | |
2355 | case CDO_CHECK_TYPE: | |
2356 | break; | |
2357 | case CDO_LOCK: | |
2358 | if (!CDROM_CAN(CDC_LOCK)) | |
2359 | return -ENOSYS; | |
2360 | break; | |
2361 | case 0: | |
2362 | return cdi->options; | |
2363 | /* default is basically CDO_[AUTO_CLOSE|AUTO_EJECT] */ | |
2364 | default: | |
2365 | if (!CDROM_CAN(arg)) | |
1da177e4 | 2366 | return -ENOSYS; |
d2c5d4fc CH |
2367 | } |
2368 | cdi->options |= (int) arg; | |
2369 | return cdi->options; | |
2370 | } | |
1da177e4 | 2371 | |
d2c5d4fc CH |
2372 | static int cdrom_ioctl_clear_options(struct cdrom_device_info *cdi, |
2373 | unsigned long arg) | |
2374 | { | |
5944b2ce | 2375 | cd_dbg(CD_DO_IOCTL, "entering CDROM_CLEAR_OPTIONS\n"); |
1da177e4 | 2376 | |
d2c5d4fc CH |
2377 | cdi->options &= ~(int) arg; |
2378 | return cdi->options; | |
2379 | } | |
1da177e4 | 2380 | |
d2c5d4fc CH |
2381 | static int cdrom_ioctl_select_speed(struct cdrom_device_info *cdi, |
2382 | unsigned long arg) | |
2383 | { | |
5944b2ce | 2384 | cd_dbg(CD_DO_IOCTL, "entering CDROM_SELECT_SPEED\n"); |
1da177e4 | 2385 | |
d2c5d4fc CH |
2386 | if (!CDROM_CAN(CDC_SELECT_SPEED)) |
2387 | return -ENOSYS; | |
2388 | return cdi->ops->select_speed(cdi, arg); | |
2389 | } | |
1da177e4 | 2390 | |
d2c5d4fc CH |
2391 | static int cdrom_ioctl_select_disc(struct cdrom_device_info *cdi, |
2392 | unsigned long arg) | |
2393 | { | |
5944b2ce | 2394 | cd_dbg(CD_DO_IOCTL, "entering CDROM_SELECT_DISC\n"); |
d2c5d4fc CH |
2395 | |
2396 | if (!CDROM_CAN(CDC_SELECT_DISC)) | |
2397 | return -ENOSYS; | |
2398 | ||
2399 | if (arg != CDSL_CURRENT && arg != CDSL_NONE) { | |
2400 | if ((int)arg >= cdi->capacity) | |
2401 | return -EINVAL; | |
2402 | } | |
2403 | ||
2404 | /* | |
2405 | * ->select_disc is a hook to allow a driver-specific way of | |
2406 | * seleting disc. However, since there is no equivalent hook for | |
2407 | * cdrom_slot_status this may not actually be useful... | |
2408 | */ | |
2409 | if (cdi->ops->select_disc) | |
2410 | return cdi->ops->select_disc(cdi, arg); | |
2411 | ||
5944b2ce | 2412 | cd_dbg(CD_CHANGER, "Using generic cdrom_select_disc()\n"); |
d2c5d4fc CH |
2413 | return cdrom_select_disc(cdi, arg); |
2414 | } | |
2415 | ||
2416 | static int cdrom_ioctl_reset(struct cdrom_device_info *cdi, | |
2417 | struct block_device *bdev) | |
2418 | { | |
5944b2ce | 2419 | cd_dbg(CD_DO_IOCTL, "entering CDROM_RESET\n"); |
d2c5d4fc CH |
2420 | |
2421 | if (!capable(CAP_SYS_ADMIN)) | |
2422 | return -EACCES; | |
2423 | if (!CDROM_CAN(CDC_RESET)) | |
2424 | return -ENOSYS; | |
f98393a6 | 2425 | invalidate_bdev(bdev); |
d2c5d4fc CH |
2426 | return cdi->ops->reset(cdi); |
2427 | } | |
2428 | ||
2429 | static int cdrom_ioctl_lock_door(struct cdrom_device_info *cdi, | |
2430 | unsigned long arg) | |
2431 | { | |
5944b2ce | 2432 | cd_dbg(CD_DO_IOCTL, "%socking door\n", arg ? "L" : "Unl"); |
d2c5d4fc CH |
2433 | |
2434 | if (!CDROM_CAN(CDC_LOCK)) | |
2435 | return -EDRIVE_CANT_DO_THIS; | |
2436 | ||
cdccaa94 | 2437 | cdi->keeplocked = arg ? 1 : 0; |
d2c5d4fc CH |
2438 | |
2439 | /* | |
2440 | * Don't unlock the door on multiple opens by default, but allow | |
2441 | * root to do so. | |
2442 | */ | |
2443 | if (cdi->use_count != 1 && !arg && !capable(CAP_SYS_ADMIN)) | |
2444 | return -EBUSY; | |
2445 | return cdi->ops->lock_door(cdi, arg); | |
2446 | } | |
2447 | ||
2448 | static int cdrom_ioctl_debug(struct cdrom_device_info *cdi, | |
2449 | unsigned long arg) | |
2450 | { | |
5944b2ce | 2451 | cd_dbg(CD_DO_IOCTL, "%sabling debug\n", arg ? "En" : "Dis"); |
d2c5d4fc CH |
2452 | |
2453 | if (!capable(CAP_SYS_ADMIN)) | |
2454 | return -EACCES; | |
2455 | debug = arg ? 1 : 0; | |
2456 | return debug; | |
2457 | } | |
1da177e4 | 2458 | |
d2c5d4fc CH |
2459 | static int cdrom_ioctl_get_capability(struct cdrom_device_info *cdi) |
2460 | { | |
5944b2ce | 2461 | cd_dbg(CD_DO_IOCTL, "entering CDROM_GET_CAPABILITY\n"); |
d2c5d4fc CH |
2462 | return (cdi->ops->capability & ~cdi->mask); |
2463 | } | |
2464 | ||
2465 | /* | |
2466 | * The following function is implemented, although very few audio | |
1da177e4 LT |
2467 | * discs give Universal Product Code information, which should just be |
2468 | * the Medium Catalog Number on the box. Note, that the way the code | |
2469 | * is written on the CD is /not/ uniform across all discs! | |
2470 | */ | |
d2c5d4fc CH |
2471 | static int cdrom_ioctl_get_mcn(struct cdrom_device_info *cdi, |
2472 | void __user *argp) | |
2473 | { | |
2474 | struct cdrom_mcn mcn; | |
2475 | int ret; | |
1da177e4 | 2476 | |
5944b2ce | 2477 | cd_dbg(CD_DO_IOCTL, "entering CDROM_GET_MCN\n"); |
1da177e4 | 2478 | |
d2c5d4fc CH |
2479 | if (!(cdi->ops->capability & CDC_MCN)) |
2480 | return -ENOSYS; | |
2481 | ret = cdi->ops->get_mcn(cdi, &mcn); | |
2482 | if (ret) | |
2483 | return ret; | |
1da177e4 | 2484 | |
d2c5d4fc CH |
2485 | if (copy_to_user(argp, &mcn, sizeof(mcn))) |
2486 | return -EFAULT; | |
5944b2ce | 2487 | cd_dbg(CD_DO_IOCTL, "CDROM_GET_MCN successful\n"); |
d2c5d4fc CH |
2488 | return 0; |
2489 | } | |
1da177e4 | 2490 | |
d2c5d4fc CH |
2491 | static int cdrom_ioctl_drive_status(struct cdrom_device_info *cdi, |
2492 | unsigned long arg) | |
2493 | { | |
5944b2ce | 2494 | cd_dbg(CD_DO_IOCTL, "entering CDROM_DRIVE_STATUS\n"); |
d2c5d4fc CH |
2495 | |
2496 | if (!(cdi->ops->capability & CDC_DRIVE_STATUS)) | |
2497 | return -ENOSYS; | |
2498 | if (!CDROM_CAN(CDC_SELECT_DISC) || | |
2499 | (arg == CDSL_CURRENT || arg == CDSL_NONE)) | |
2500 | return cdi->ops->drive_status(cdi, CDSL_CURRENT); | |
2501 | if (((int)arg >= cdi->capacity)) | |
2502 | return -EINVAL; | |
2503 | return cdrom_slot_status(cdi, arg); | |
2504 | } | |
2505 | ||
2506 | /* | |
2507 | * Ok, this is where problems start. The current interface for the | |
2508 | * CDROM_DISC_STATUS ioctl is flawed. It makes the false assumption that | |
25985edc | 2509 | * CDs are all CDS_DATA_1 or all CDS_AUDIO, etc. Unfortunately, while this |
d2c5d4fc CH |
2510 | * is often the case, it is also very common for CDs to have some tracks |
2511 | * with data, and some tracks with audio. Just because I feel like it, | |
2512 | * I declare the following to be the best way to cope. If the CD has ANY | |
2513 | * data tracks on it, it will be returned as a data CD. If it has any XA | |
2514 | * tracks, I will return it as that. Now I could simplify this interface | |
2515 | * by combining these returns with the above, but this more clearly | |
2516 | * demonstrates the problem with the current interface. Too bad this | |
2517 | * wasn't designed to use bitmasks... -Erik | |
2518 | * | |
2519 | * Well, now we have the option CDS_MIXED: a mixed-type CD. | |
2520 | * User level programmers might feel the ioctl is not very useful. | |
2521 | * ---david | |
2522 | */ | |
2523 | static int cdrom_ioctl_disc_status(struct cdrom_device_info *cdi) | |
2524 | { | |
2525 | tracktype tracks; | |
2526 | ||
5944b2ce | 2527 | cd_dbg(CD_DO_IOCTL, "entering CDROM_DISC_STATUS\n"); |
d2c5d4fc CH |
2528 | |
2529 | cdrom_count_tracks(cdi, &tracks); | |
2530 | if (tracks.error) | |
2531 | return tracks.error; | |
2532 | ||
2533 | /* Policy mode on */ | |
2534 | if (tracks.audio > 0) { | |
2535 | if (!tracks.data && !tracks.cdi && !tracks.xa) | |
2536 | return CDS_AUDIO; | |
2537 | else | |
2538 | return CDS_MIXED; | |
1da177e4 LT |
2539 | } |
2540 | ||
d2c5d4fc CH |
2541 | if (tracks.cdi > 0) |
2542 | return CDS_XA_2_2; | |
2543 | if (tracks.xa > 0) | |
2544 | return CDS_XA_2_1; | |
2545 | if (tracks.data > 0) | |
2546 | return CDS_DATA_1; | |
2547 | /* Policy mode off */ | |
2548 | ||
5944b2ce | 2549 | cd_dbg(CD_WARNING, "This disc doesn't have any tracks I recognize!\n"); |
d2c5d4fc CH |
2550 | return CDS_NO_INFO; |
2551 | } | |
2552 | ||
2553 | static int cdrom_ioctl_changer_nslots(struct cdrom_device_info *cdi) | |
2554 | { | |
5944b2ce | 2555 | cd_dbg(CD_DO_IOCTL, "entering CDROM_CHANGER_NSLOTS\n"); |
d2c5d4fc CH |
2556 | return cdi->capacity; |
2557 | } | |
2558 | ||
2559 | static int cdrom_ioctl_get_subchnl(struct cdrom_device_info *cdi, | |
2560 | void __user *argp) | |
2561 | { | |
2562 | struct cdrom_subchnl q; | |
2563 | u8 requested, back; | |
2564 | int ret; | |
2565 | ||
5944b2ce | 2566 | /* cd_dbg(CD_DO_IOCTL,"entering CDROMSUBCHNL\n");*/ |
d2c5d4fc | 2567 | |
d2c5d4fc CH |
2568 | if (copy_from_user(&q, argp, sizeof(q))) |
2569 | return -EFAULT; | |
2570 | ||
2571 | requested = q.cdsc_format; | |
2572 | if (requested != CDROM_MSF && requested != CDROM_LBA) | |
2573 | return -EINVAL; | |
2574 | q.cdsc_format = CDROM_MSF; | |
2575 | ||
2576 | ret = cdi->ops->audio_ioctl(cdi, CDROMSUBCHNL, &q); | |
2577 | if (ret) | |
2578 | return ret; | |
2579 | ||
2580 | back = q.cdsc_format; /* local copy */ | |
2581 | sanitize_format(&q.cdsc_absaddr, &back, requested); | |
2582 | sanitize_format(&q.cdsc_reladdr, &q.cdsc_format, requested); | |
2583 | ||
2584 | if (copy_to_user(argp, &q, sizeof(q))) | |
2585 | return -EFAULT; | |
5944b2ce | 2586 | /* cd_dbg(CD_DO_IOCTL, "CDROMSUBCHNL successful\n"); */ |
d2c5d4fc CH |
2587 | return 0; |
2588 | } | |
2589 | ||
2590 | static int cdrom_ioctl_read_tochdr(struct cdrom_device_info *cdi, | |
2591 | void __user *argp) | |
2592 | { | |
2593 | struct cdrom_tochdr header; | |
2594 | int ret; | |
2595 | ||
5944b2ce | 2596 | /* cd_dbg(CD_DO_IOCTL, "entering CDROMREADTOCHDR\n"); */ |
d2c5d4fc | 2597 | |
d2c5d4fc CH |
2598 | if (copy_from_user(&header, argp, sizeof(header))) |
2599 | return -EFAULT; | |
2600 | ||
2601 | ret = cdi->ops->audio_ioctl(cdi, CDROMREADTOCHDR, &header); | |
2602 | if (ret) | |
2603 | return ret; | |
2604 | ||
2605 | if (copy_to_user(argp, &header, sizeof(header))) | |
2606 | return -EFAULT; | |
5944b2ce | 2607 | /* cd_dbg(CD_DO_IOCTL, "CDROMREADTOCHDR successful\n"); */ |
d2c5d4fc CH |
2608 | return 0; |
2609 | } | |
2610 | ||
2611 | static int cdrom_ioctl_read_tocentry(struct cdrom_device_info *cdi, | |
2612 | void __user *argp) | |
2613 | { | |
2614 | struct cdrom_tocentry entry; | |
2615 | u8 requested_format; | |
2616 | int ret; | |
2617 | ||
5944b2ce | 2618 | /* cd_dbg(CD_DO_IOCTL, "entering CDROMREADTOCENTRY\n"); */ |
d2c5d4fc | 2619 | |
d2c5d4fc CH |
2620 | if (copy_from_user(&entry, argp, sizeof(entry))) |
2621 | return -EFAULT; | |
2622 | ||
2623 | requested_format = entry.cdte_format; | |
2624 | if (requested_format != CDROM_MSF && requested_format != CDROM_LBA) | |
2625 | return -EINVAL; | |
2626 | /* make interface to low-level uniform */ | |
2627 | entry.cdte_format = CDROM_MSF; | |
2628 | ret = cdi->ops->audio_ioctl(cdi, CDROMREADTOCENTRY, &entry); | |
2629 | if (ret) | |
2630 | return ret; | |
2631 | sanitize_format(&entry.cdte_addr, &entry.cdte_format, requested_format); | |
2632 | ||
2633 | if (copy_to_user(argp, &entry, sizeof(entry))) | |
2634 | return -EFAULT; | |
5944b2ce | 2635 | /* cd_dbg(CD_DO_IOCTL, "CDROMREADTOCENTRY successful\n"); */ |
d2c5d4fc CH |
2636 | return 0; |
2637 | } | |
2638 | ||
2639 | static int cdrom_ioctl_play_msf(struct cdrom_device_info *cdi, | |
2640 | void __user *argp) | |
2641 | { | |
2642 | struct cdrom_msf msf; | |
2643 | ||
5944b2ce | 2644 | cd_dbg(CD_DO_IOCTL, "entering CDROMPLAYMSF\n"); |
d2c5d4fc CH |
2645 | |
2646 | if (!CDROM_CAN(CDC_PLAY_AUDIO)) | |
2647 | return -ENOSYS; | |
2648 | if (copy_from_user(&msf, argp, sizeof(msf))) | |
2649 | return -EFAULT; | |
2650 | return cdi->ops->audio_ioctl(cdi, CDROMPLAYMSF, &msf); | |
2651 | } | |
2652 | ||
2653 | static int cdrom_ioctl_play_trkind(struct cdrom_device_info *cdi, | |
2654 | void __user *argp) | |
2655 | { | |
2656 | struct cdrom_ti ti; | |
2657 | int ret; | |
2658 | ||
5944b2ce | 2659 | cd_dbg(CD_DO_IOCTL, "entering CDROMPLAYTRKIND\n"); |
d2c5d4fc CH |
2660 | |
2661 | if (!CDROM_CAN(CDC_PLAY_AUDIO)) | |
2662 | return -ENOSYS; | |
2663 | if (copy_from_user(&ti, argp, sizeof(ti))) | |
2664 | return -EFAULT; | |
2665 | ||
2666 | ret = check_for_audio_disc(cdi, cdi->ops); | |
2667 | if (ret) | |
2668 | return ret; | |
2669 | return cdi->ops->audio_ioctl(cdi, CDROMPLAYTRKIND, &ti); | |
2670 | } | |
2671 | static int cdrom_ioctl_volctrl(struct cdrom_device_info *cdi, | |
2672 | void __user *argp) | |
2673 | { | |
2674 | struct cdrom_volctrl volume; | |
2675 | ||
5944b2ce | 2676 | cd_dbg(CD_DO_IOCTL, "entering CDROMVOLCTRL\n"); |
d2c5d4fc CH |
2677 | |
2678 | if (!CDROM_CAN(CDC_PLAY_AUDIO)) | |
2679 | return -ENOSYS; | |
2680 | if (copy_from_user(&volume, argp, sizeof(volume))) | |
2681 | return -EFAULT; | |
2682 | return cdi->ops->audio_ioctl(cdi, CDROMVOLCTRL, &volume); | |
2683 | } | |
2684 | ||
2685 | static int cdrom_ioctl_volread(struct cdrom_device_info *cdi, | |
2686 | void __user *argp) | |
2687 | { | |
2688 | struct cdrom_volctrl volume; | |
2689 | int ret; | |
2690 | ||
5944b2ce | 2691 | cd_dbg(CD_DO_IOCTL, "entering CDROMVOLREAD\n"); |
d2c5d4fc CH |
2692 | |
2693 | if (!CDROM_CAN(CDC_PLAY_AUDIO)) | |
2694 | return -ENOSYS; | |
2695 | ||
2696 | ret = cdi->ops->audio_ioctl(cdi, CDROMVOLREAD, &volume); | |
2697 | if (ret) | |
2698 | return ret; | |
2699 | ||
2700 | if (copy_to_user(argp, &volume, sizeof(volume))) | |
2701 | return -EFAULT; | |
2702 | return 0; | |
2703 | } | |
2704 | ||
2705 | static int cdrom_ioctl_audioctl(struct cdrom_device_info *cdi, | |
2706 | unsigned int cmd) | |
2707 | { | |
2708 | int ret; | |
2709 | ||
5944b2ce | 2710 | cd_dbg(CD_DO_IOCTL, "doing audio ioctl (start/stop/pause/resume)\n"); |
d2c5d4fc CH |
2711 | |
2712 | if (!CDROM_CAN(CDC_PLAY_AUDIO)) | |
2713 | return -ENOSYS; | |
2714 | ret = check_for_audio_disc(cdi, cdi->ops); | |
2715 | if (ret) | |
2716 | return ret; | |
2717 | return cdi->ops->audio_ioctl(cdi, cmd, NULL); | |
2718 | } | |
2719 | ||
2720 | /* | |
2721 | * Just about every imaginable ioctl is supported in the Uniform layer | |
2722 | * these days. | |
2723 | * ATAPI / SCSI specific code now mainly resides in mmc_ioctl(). | |
2724 | */ | |
bbc1cc97 AV |
2725 | int cdrom_ioctl(struct cdrom_device_info *cdi, struct block_device *bdev, |
2726 | fmode_t mode, unsigned int cmd, unsigned long arg) | |
d2c5d4fc CH |
2727 | { |
2728 | void __user *argp = (void __user *)arg; | |
2729 | int ret; | |
2730 | ||
2731 | /* | |
2732 | * Try the generic SCSI command ioctl's first. | |
2733 | */ | |
577ebb37 | 2734 | ret = scsi_cmd_blk_ioctl(bdev, mode, cmd, argp); |
d2c5d4fc CH |
2735 | if (ret != -ENOTTY) |
2736 | return ret; | |
2737 | ||
2738 | switch (cmd) { | |
2739 | case CDROMMULTISESSION: | |
2740 | return cdrom_ioctl_multisession(cdi, argp); | |
2741 | case CDROMEJECT: | |
2742 | return cdrom_ioctl_eject(cdi); | |
2743 | case CDROMCLOSETRAY: | |
2744 | return cdrom_ioctl_closetray(cdi); | |
2745 | case CDROMEJECT_SW: | |
2746 | return cdrom_ioctl_eject_sw(cdi, arg); | |
2747 | case CDROM_MEDIA_CHANGED: | |
2748 | return cdrom_ioctl_media_changed(cdi, arg); | |
2749 | case CDROM_SET_OPTIONS: | |
2750 | return cdrom_ioctl_set_options(cdi, arg); | |
2751 | case CDROM_CLEAR_OPTIONS: | |
2752 | return cdrom_ioctl_clear_options(cdi, arg); | |
2753 | case CDROM_SELECT_SPEED: | |
2754 | return cdrom_ioctl_select_speed(cdi, arg); | |
2755 | case CDROM_SELECT_DISC: | |
2756 | return cdrom_ioctl_select_disc(cdi, arg); | |
2757 | case CDROMRESET: | |
bbc1cc97 | 2758 | return cdrom_ioctl_reset(cdi, bdev); |
d2c5d4fc CH |
2759 | case CDROM_LOCKDOOR: |
2760 | return cdrom_ioctl_lock_door(cdi, arg); | |
2761 | case CDROM_DEBUG: | |
2762 | return cdrom_ioctl_debug(cdi, arg); | |
2763 | case CDROM_GET_CAPABILITY: | |
2764 | return cdrom_ioctl_get_capability(cdi); | |
2765 | case CDROM_GET_MCN: | |
2766 | return cdrom_ioctl_get_mcn(cdi, argp); | |
2767 | case CDROM_DRIVE_STATUS: | |
2768 | return cdrom_ioctl_drive_status(cdi, arg); | |
2769 | case CDROM_DISC_STATUS: | |
2770 | return cdrom_ioctl_disc_status(cdi); | |
2771 | case CDROM_CHANGER_NSLOTS: | |
2772 | return cdrom_ioctl_changer_nslots(cdi); | |
2773 | } | |
2774 | ||
2775 | /* | |
2776 | * Use the ioctls that are implemented through the generic_packet() | |
2777 | * interface. this may look at bit funny, but if -ENOTTY is | |
2778 | * returned that particular ioctl is not implemented and we | |
2779 | * let it go through the device specific ones. | |
2780 | */ | |
1da177e4 LT |
2781 | if (CDROM_CAN(CDC_GENERIC_PACKET)) { |
2782 | ret = mmc_ioctl(cdi, cmd, arg); | |
d2c5d4fc | 2783 | if (ret != -ENOTTY) |
1da177e4 | 2784 | return ret; |
1da177e4 LT |
2785 | } |
2786 | ||
d2c5d4fc | 2787 | /* |
5944b2ce | 2788 | * Note: most of the cd_dbg() calls are commented out here, |
d2c5d4fc CH |
2789 | * because they fill up the sys log when CD players poll |
2790 | * the drive. | |
2791 | */ | |
1da177e4 | 2792 | switch (cmd) { |
d2c5d4fc CH |
2793 | case CDROMSUBCHNL: |
2794 | return cdrom_ioctl_get_subchnl(cdi, argp); | |
2795 | case CDROMREADTOCHDR: | |
2796 | return cdrom_ioctl_read_tochdr(cdi, argp); | |
2797 | case CDROMREADTOCENTRY: | |
2798 | return cdrom_ioctl_read_tocentry(cdi, argp); | |
2799 | case CDROMPLAYMSF: | |
2800 | return cdrom_ioctl_play_msf(cdi, argp); | |
2801 | case CDROMPLAYTRKIND: | |
2802 | return cdrom_ioctl_play_trkind(cdi, argp); | |
2803 | case CDROMVOLCTRL: | |
2804 | return cdrom_ioctl_volctrl(cdi, argp); | |
2805 | case CDROMVOLREAD: | |
2806 | return cdrom_ioctl_volread(cdi, argp); | |
1da177e4 LT |
2807 | case CDROMSTART: |
2808 | case CDROMSTOP: | |
2809 | case CDROMPAUSE: | |
d2c5d4fc CH |
2810 | case CDROMRESUME: |
2811 | return cdrom_ioctl_audioctl(cdi, cmd); | |
2812 | } | |
1da177e4 | 2813 | |
1da177e4 LT |
2814 | return -ENOSYS; |
2815 | } | |
2816 | ||
1da177e4 LT |
2817 | /* |
2818 | * Required when we need to use READ_10 to issue other than 2048 block | |
2819 | * reads | |
2820 | */ | |
2821 | static int cdrom_switch_blocksize(struct cdrom_device_info *cdi, int size) | |
2822 | { | |
2823 | struct cdrom_device_ops *cdo = cdi->ops; | |
2824 | struct packet_command cgc; | |
2825 | struct modesel_head mh; | |
2826 | ||
2827 | memset(&mh, 0, sizeof(mh)); | |
2828 | mh.block_desc_length = 0x08; | |
2829 | mh.block_length_med = (size >> 8) & 0xff; | |
2830 | mh.block_length_lo = size & 0xff; | |
2831 | ||
2832 | memset(&cgc, 0, sizeof(cgc)); | |
2833 | cgc.cmd[0] = 0x15; | |
2834 | cgc.cmd[1] = 1 << 4; | |
2835 | cgc.cmd[4] = 12; | |
2836 | cgc.buflen = sizeof(mh); | |
2837 | cgc.buffer = (char *) &mh; | |
2838 | cgc.data_direction = CGC_DATA_WRITE; | |
2839 | mh.block_desc_length = 0x08; | |
2840 | mh.block_length_med = (size >> 8) & 0xff; | |
2841 | mh.block_length_lo = size & 0xff; | |
2842 | ||
2843 | return cdo->generic_packet(cdi, &cgc); | |
2844 | } | |
2845 | ||
3147c531 MS |
2846 | static noinline int mmc_ioctl_cdrom_read_data(struct cdrom_device_info *cdi, |
2847 | void __user *arg, | |
2848 | struct packet_command *cgc, | |
2849 | int cmd) | |
2850 | { | |
1da177e4 | 2851 | struct request_sense sense; |
3147c531 MS |
2852 | struct cdrom_msf msf; |
2853 | int blocksize = 0, format = 0, lba; | |
2854 | int ret; | |
1da177e4 | 2855 | |
1da177e4 LT |
2856 | switch (cmd) { |
2857 | case CDROMREADRAW: | |
3147c531 MS |
2858 | blocksize = CD_FRAMESIZE_RAW; |
2859 | break; | |
1da177e4 | 2860 | case CDROMREADMODE1: |
3147c531 MS |
2861 | blocksize = CD_FRAMESIZE; |
2862 | format = 2; | |
2863 | break; | |
2864 | case CDROMREADMODE2: | |
2865 | blocksize = CD_FRAMESIZE_RAW0; | |
2866 | break; | |
2867 | } | |
a09c391d JP |
2868 | if (copy_from_user(&msf, (struct cdrom_msf __user *)arg, sizeof(msf))) |
2869 | return -EFAULT; | |
3147c531 MS |
2870 | lba = msf_to_lba(msf.cdmsf_min0, msf.cdmsf_sec0, msf.cdmsf_frame0); |
2871 | /* FIXME: we need upper bound checking, too!! */ | |
2872 | if (lba < 0) | |
2873 | return -EINVAL; | |
2874 | ||
542db015 | 2875 | cgc->buffer = kzalloc(blocksize, GFP_KERNEL); |
3147c531 MS |
2876 | if (cgc->buffer == NULL) |
2877 | return -ENOMEM; | |
2878 | ||
2879 | memset(&sense, 0, sizeof(sense)); | |
2880 | cgc->sense = &sense; | |
2881 | cgc->data_direction = CGC_DATA_READ; | |
2882 | ret = cdrom_read_block(cdi, cgc, lba, 1, format, blocksize); | |
2883 | if (ret && sense.sense_key == 0x05 && | |
2884 | sense.asc == 0x20 && | |
2885 | sense.ascq == 0x00) { | |
2886 | /* | |
2887 | * SCSI-II devices are not required to support | |
2888 | * READ_CD, so let's try switching block size | |
2889 | */ | |
2890 | /* FIXME: switch back again... */ | |
2891 | ret = cdrom_switch_blocksize(cdi, blocksize); | |
2892 | if (ret) | |
2893 | goto out; | |
2894 | cgc->sense = NULL; | |
2895 | ret = cdrom_read_cd(cdi, cgc, lba, blocksize, 1); | |
2896 | ret |= cdrom_switch_blocksize(cdi, blocksize); | |
2897 | } | |
2898 | if (!ret && copy_to_user(arg, cgc->buffer, blocksize)) | |
2899 | ret = -EFAULT; | |
2900 | out: | |
2901 | kfree(cgc->buffer); | |
2902 | return ret; | |
2903 | } | |
2904 | ||
2905 | static noinline int mmc_ioctl_cdrom_read_audio(struct cdrom_device_info *cdi, | |
2906 | void __user *arg) | |
2907 | { | |
2908 | struct cdrom_read_audio ra; | |
2909 | int lba; | |
2910 | ||
a09c391d JP |
2911 | if (copy_from_user(&ra, (struct cdrom_read_audio __user *)arg, |
2912 | sizeof(ra))) | |
2913 | return -EFAULT; | |
3147c531 MS |
2914 | |
2915 | if (ra.addr_format == CDROM_MSF) | |
2916 | lba = msf_to_lba(ra.addr.msf.minute, | |
2917 | ra.addr.msf.second, | |
2918 | ra.addr.msf.frame); | |
2919 | else if (ra.addr_format == CDROM_LBA) | |
2920 | lba = ra.addr.lba; | |
2921 | else | |
2922 | return -EINVAL; | |
2923 | ||
2924 | /* FIXME: we need upper bound checking, too!! */ | |
2925 | if (lba < 0 || ra.nframes <= 0 || ra.nframes > CD_FRAMES) | |
2926 | return -EINVAL; | |
2927 | ||
2928 | return cdrom_read_cdda(cdi, ra.buf, lba, ra.nframes); | |
2929 | } | |
2930 | ||
2931 | static noinline int mmc_ioctl_cdrom_subchannel(struct cdrom_device_info *cdi, | |
2932 | void __user *arg) | |
2933 | { | |
2934 | int ret; | |
2935 | struct cdrom_subchnl q; | |
2936 | u_char requested, back; | |
a09c391d JP |
2937 | if (copy_from_user(&q, (struct cdrom_subchnl __user *)arg, sizeof(q))) |
2938 | return -EFAULT; | |
3147c531 MS |
2939 | requested = q.cdsc_format; |
2940 | if (!((requested == CDROM_MSF) || | |
2941 | (requested == CDROM_LBA))) | |
2942 | return -EINVAL; | |
2943 | q.cdsc_format = CDROM_MSF; | |
2944 | ret = cdrom_read_subchannel(cdi, &q, 0); | |
2945 | if (ret) | |
1da177e4 | 2946 | return ret; |
3147c531 MS |
2947 | back = q.cdsc_format; /* local copy */ |
2948 | sanitize_format(&q.cdsc_absaddr, &back, requested); | |
2949 | sanitize_format(&q.cdsc_reladdr, &q.cdsc_format, requested); | |
a09c391d JP |
2950 | if (copy_to_user((struct cdrom_subchnl __user *)arg, &q, sizeof(q))) |
2951 | return -EFAULT; | |
5944b2ce | 2952 | /* cd_dbg(CD_DO_IOCTL, "CDROMSUBCHNL successful\n"); */ |
3147c531 MS |
2953 | return 0; |
2954 | } | |
1da177e4 | 2955 | |
3147c531 MS |
2956 | static noinline int mmc_ioctl_cdrom_play_msf(struct cdrom_device_info *cdi, |
2957 | void __user *arg, | |
2958 | struct packet_command *cgc) | |
2959 | { | |
2960 | struct cdrom_device_ops *cdo = cdi->ops; | |
2961 | struct cdrom_msf msf; | |
5944b2ce | 2962 | cd_dbg(CD_DO_IOCTL, "entering CDROMPLAYMSF\n"); |
a09c391d JP |
2963 | if (copy_from_user(&msf, (struct cdrom_msf __user *)arg, sizeof(msf))) |
2964 | return -EFAULT; | |
3147c531 MS |
2965 | cgc->cmd[0] = GPCMD_PLAY_AUDIO_MSF; |
2966 | cgc->cmd[3] = msf.cdmsf_min0; | |
2967 | cgc->cmd[4] = msf.cdmsf_sec0; | |
2968 | cgc->cmd[5] = msf.cdmsf_frame0; | |
2969 | cgc->cmd[6] = msf.cdmsf_min1; | |
2970 | cgc->cmd[7] = msf.cdmsf_sec1; | |
2971 | cgc->cmd[8] = msf.cdmsf_frame1; | |
2972 | cgc->data_direction = CGC_DATA_NONE; | |
2973 | return cdo->generic_packet(cdi, cgc); | |
2974 | } | |
1da177e4 | 2975 | |
3147c531 MS |
2976 | static noinline int mmc_ioctl_cdrom_play_blk(struct cdrom_device_info *cdi, |
2977 | void __user *arg, | |
2978 | struct packet_command *cgc) | |
2979 | { | |
2980 | struct cdrom_device_ops *cdo = cdi->ops; | |
2981 | struct cdrom_blk blk; | |
5944b2ce | 2982 | cd_dbg(CD_DO_IOCTL, "entering CDROMPLAYBLK\n"); |
a09c391d JP |
2983 | if (copy_from_user(&blk, (struct cdrom_blk __user *)arg, sizeof(blk))) |
2984 | return -EFAULT; | |
3147c531 MS |
2985 | cgc->cmd[0] = GPCMD_PLAY_AUDIO_10; |
2986 | cgc->cmd[2] = (blk.from >> 24) & 0xff; | |
2987 | cgc->cmd[3] = (blk.from >> 16) & 0xff; | |
2988 | cgc->cmd[4] = (blk.from >> 8) & 0xff; | |
2989 | cgc->cmd[5] = blk.from & 0xff; | |
2990 | cgc->cmd[7] = (blk.len >> 8) & 0xff; | |
2991 | cgc->cmd[8] = blk.len & 0xff; | |
2992 | cgc->data_direction = CGC_DATA_NONE; | |
2993 | return cdo->generic_packet(cdi, cgc); | |
2994 | } | |
1da177e4 | 2995 | |
3147c531 MS |
2996 | static noinline int mmc_ioctl_cdrom_volume(struct cdrom_device_info *cdi, |
2997 | void __user *arg, | |
2998 | struct packet_command *cgc, | |
2999 | unsigned int cmd) | |
3000 | { | |
3001 | struct cdrom_volctrl volctrl; | |
3002 | unsigned char buffer[32]; | |
3003 | char mask[sizeof(buffer)]; | |
3004 | unsigned short offset; | |
3005 | int ret; | |
3006 | ||
5944b2ce | 3007 | cd_dbg(CD_DO_IOCTL, "entering CDROMVOLUME\n"); |
1da177e4 | 3008 | |
a09c391d JP |
3009 | if (copy_from_user(&volctrl, (struct cdrom_volctrl __user *)arg, |
3010 | sizeof(volctrl))) | |
3011 | return -EFAULT; | |
1da177e4 | 3012 | |
3147c531 MS |
3013 | cgc->buffer = buffer; |
3014 | cgc->buflen = 24; | |
3015 | ret = cdrom_mode_sense(cdi, cgc, GPMODE_AUDIO_CTL_PAGE, 0); | |
3016 | if (ret) | |
3017 | return ret; | |
1da177e4 | 3018 | |
3147c531 MS |
3019 | /* originally the code depended on buffer[1] to determine |
3020 | how much data is available for transfer. buffer[1] is | |
3021 | unfortunately ambigious and the only reliable way seem | |
3022 | to be to simply skip over the block descriptor... */ | |
3023 | offset = 8 + be16_to_cpu(*(__be16 *)(buffer + 6)); | |
3024 | ||
3025 | if (offset + 16 > sizeof(buffer)) | |
3026 | return -E2BIG; | |
3027 | ||
3028 | if (offset + 16 > cgc->buflen) { | |
3029 | cgc->buflen = offset + 16; | |
3030 | ret = cdrom_mode_sense(cdi, cgc, | |
3031 | GPMODE_AUDIO_CTL_PAGE, 0); | |
3032 | if (ret) | |
3033 | return ret; | |
3034 | } | |
1da177e4 | 3035 | |
3147c531 MS |
3036 | /* sanity check */ |
3037 | if ((buffer[offset] & 0x3f) != GPMODE_AUDIO_CTL_PAGE || | |
3038 | buffer[offset + 1] < 14) | |
3039 | return -EINVAL; | |
1da177e4 | 3040 | |
3147c531 MS |
3041 | /* now we have the current volume settings. if it was only |
3042 | a CDROMVOLREAD, return these values */ | |
3043 | if (cmd == CDROMVOLREAD) { | |
3044 | volctrl.channel0 = buffer[offset+9]; | |
3045 | volctrl.channel1 = buffer[offset+11]; | |
3046 | volctrl.channel2 = buffer[offset+13]; | |
3047 | volctrl.channel3 = buffer[offset+15]; | |
a09c391d JP |
3048 | if (copy_to_user((struct cdrom_volctrl __user *)arg, &volctrl, |
3049 | sizeof(volctrl))) | |
3050 | return -EFAULT; | |
3147c531 MS |
3051 | return 0; |
3052 | } | |
1da177e4 | 3053 | |
3147c531 MS |
3054 | /* get the volume mask */ |
3055 | cgc->buffer = mask; | |
3056 | ret = cdrom_mode_sense(cdi, cgc, GPMODE_AUDIO_CTL_PAGE, 1); | |
3057 | if (ret) | |
3058 | return ret; | |
1da177e4 | 3059 | |
3147c531 MS |
3060 | buffer[offset + 9] = volctrl.channel0 & mask[offset + 9]; |
3061 | buffer[offset + 11] = volctrl.channel1 & mask[offset + 11]; | |
3062 | buffer[offset + 13] = volctrl.channel2 & mask[offset + 13]; | |
3063 | buffer[offset + 15] = volctrl.channel3 & mask[offset + 15]; | |
1da177e4 | 3064 | |
3147c531 MS |
3065 | /* set volume */ |
3066 | cgc->buffer = buffer + offset - 8; | |
3067 | memset(cgc->buffer, 0, 8); | |
3068 | return cdrom_mode_select(cdi, cgc); | |
3069 | } | |
1da177e4 | 3070 | |
3147c531 MS |
3071 | static noinline int mmc_ioctl_cdrom_start_stop(struct cdrom_device_info *cdi, |
3072 | struct packet_command *cgc, | |
3073 | int cmd) | |
3074 | { | |
3075 | struct cdrom_device_ops *cdo = cdi->ops; | |
5944b2ce | 3076 | cd_dbg(CD_DO_IOCTL, "entering CDROMSTART/CDROMSTOP\n"); |
3147c531 MS |
3077 | cgc->cmd[0] = GPCMD_START_STOP_UNIT; |
3078 | cgc->cmd[1] = 1; | |
3079 | cgc->cmd[4] = (cmd == CDROMSTART) ? 1 : 0; | |
3080 | cgc->data_direction = CGC_DATA_NONE; | |
3081 | return cdo->generic_packet(cdi, cgc); | |
3082 | } | |
1da177e4 | 3083 | |
3147c531 MS |
3084 | static noinline int mmc_ioctl_cdrom_pause_resume(struct cdrom_device_info *cdi, |
3085 | struct packet_command *cgc, | |
3086 | int cmd) | |
3087 | { | |
3088 | struct cdrom_device_ops *cdo = cdi->ops; | |
5944b2ce | 3089 | cd_dbg(CD_DO_IOCTL, "entering CDROMPAUSE/CDROMRESUME\n"); |
3147c531 MS |
3090 | cgc->cmd[0] = GPCMD_PAUSE_RESUME; |
3091 | cgc->cmd[8] = (cmd == CDROMRESUME) ? 1 : 0; | |
3092 | cgc->data_direction = CGC_DATA_NONE; | |
3093 | return cdo->generic_packet(cdi, cgc); | |
3094 | } | |
1da177e4 | 3095 | |
3147c531 | 3096 | static noinline int mmc_ioctl_dvd_read_struct(struct cdrom_device_info *cdi, |
d194139c MS |
3097 | void __user *arg, |
3098 | struct packet_command *cgc) | |
3147c531 MS |
3099 | { |
3100 | int ret; | |
3101 | dvd_struct *s; | |
3102 | int size = sizeof(dvd_struct); | |
3103 | ||
3104 | if (!CDROM_CAN(CDC_DVD)) | |
3105 | return -ENOSYS; | |
3106 | ||
3107 | s = kmalloc(size, GFP_KERNEL); | |
3108 | if (!s) | |
3109 | return -ENOMEM; | |
3110 | ||
5944b2ce | 3111 | cd_dbg(CD_DO_IOCTL, "entering DVD_READ_STRUCT\n"); |
3147c531 | 3112 | if (copy_from_user(s, arg, size)) { |
1da177e4 | 3113 | kfree(s); |
3147c531 MS |
3114 | return -EFAULT; |
3115 | } | |
3116 | ||
d194139c | 3117 | ret = dvd_read_struct(cdi, s, cgc); |
3147c531 MS |
3118 | if (ret) |
3119 | goto out; | |
3120 | ||
3121 | if (copy_to_user(arg, s, size)) | |
3122 | ret = -EFAULT; | |
3123 | out: | |
3124 | kfree(s); | |
3125 | return ret; | |
3126 | } | |
3127 | ||
3128 | static noinline int mmc_ioctl_dvd_auth(struct cdrom_device_info *cdi, | |
3129 | void __user *arg) | |
3130 | { | |
3131 | int ret; | |
3132 | dvd_authinfo ai; | |
3133 | if (!CDROM_CAN(CDC_DVD)) | |
3134 | return -ENOSYS; | |
5944b2ce | 3135 | cd_dbg(CD_DO_IOCTL, "entering DVD_AUTH\n"); |
a09c391d JP |
3136 | if (copy_from_user(&ai, (dvd_authinfo __user *)arg, sizeof(ai))) |
3137 | return -EFAULT; | |
3147c531 MS |
3138 | ret = dvd_do_auth(cdi, &ai); |
3139 | if (ret) | |
1da177e4 | 3140 | return ret; |
a09c391d JP |
3141 | if (copy_to_user((dvd_authinfo __user *)arg, &ai, sizeof(ai))) |
3142 | return -EFAULT; | |
3147c531 MS |
3143 | return 0; |
3144 | } | |
1da177e4 | 3145 | |
3147c531 MS |
3146 | static noinline int mmc_ioctl_cdrom_next_writable(struct cdrom_device_info *cdi, |
3147 | void __user *arg) | |
3148 | { | |
3149 | int ret; | |
3150 | long next = 0; | |
5944b2ce | 3151 | cd_dbg(CD_DO_IOCTL, "entering CDROM_NEXT_WRITABLE\n"); |
3147c531 MS |
3152 | ret = cdrom_get_next_writable(cdi, &next); |
3153 | if (ret) | |
3154 | return ret; | |
a09c391d JP |
3155 | if (copy_to_user((long __user *)arg, &next, sizeof(next))) |
3156 | return -EFAULT; | |
3147c531 MS |
3157 | return 0; |
3158 | } | |
1da177e4 | 3159 | |
3147c531 MS |
3160 | static noinline int mmc_ioctl_cdrom_last_written(struct cdrom_device_info *cdi, |
3161 | void __user *arg) | |
3162 | { | |
3163 | int ret; | |
3164 | long last = 0; | |
5944b2ce | 3165 | cd_dbg(CD_DO_IOCTL, "entering CDROM_LAST_WRITTEN\n"); |
3147c531 MS |
3166 | ret = cdrom_get_last_written(cdi, &last); |
3167 | if (ret) | |
3168 | return ret; | |
a09c391d JP |
3169 | if (copy_to_user((long __user *)arg, &last, sizeof(last))) |
3170 | return -EFAULT; | |
3147c531 MS |
3171 | return 0; |
3172 | } | |
3173 | ||
3174 | static int mmc_ioctl(struct cdrom_device_info *cdi, unsigned int cmd, | |
3175 | unsigned long arg) | |
3176 | { | |
3177 | struct packet_command cgc; | |
3178 | void __user *userptr = (void __user *)arg; | |
3179 | ||
3180 | memset(&cgc, 0, sizeof(cgc)); | |
3181 | ||
3182 | /* build a unified command and queue it through | |
3183 | cdo->generic_packet() */ | |
3184 | switch (cmd) { | |
3185 | case CDROMREADRAW: | |
3186 | case CDROMREADMODE1: | |
3187 | case CDROMREADMODE2: | |
3188 | return mmc_ioctl_cdrom_read_data(cdi, userptr, &cgc, cmd); | |
3189 | case CDROMREADAUDIO: | |
3190 | return mmc_ioctl_cdrom_read_audio(cdi, userptr); | |
3191 | case CDROMSUBCHNL: | |
3192 | return mmc_ioctl_cdrom_subchannel(cdi, userptr); | |
3193 | case CDROMPLAYMSF: | |
3194 | return mmc_ioctl_cdrom_play_msf(cdi, userptr, &cgc); | |
3195 | case CDROMPLAYBLK: | |
3196 | return mmc_ioctl_cdrom_play_blk(cdi, userptr, &cgc); | |
3197 | case CDROMVOLCTRL: | |
3198 | case CDROMVOLREAD: | |
3199 | return mmc_ioctl_cdrom_volume(cdi, userptr, &cgc, cmd); | |
3200 | case CDROMSTART: | |
3201 | case CDROMSTOP: | |
3202 | return mmc_ioctl_cdrom_start_stop(cdi, &cgc, cmd); | |
3203 | case CDROMPAUSE: | |
3204 | case CDROMRESUME: | |
3205 | return mmc_ioctl_cdrom_pause_resume(cdi, &cgc, cmd); | |
3206 | case DVD_READ_STRUCT: | |
d194139c | 3207 | return mmc_ioctl_dvd_read_struct(cdi, userptr, &cgc); |
3147c531 MS |
3208 | case DVD_AUTH: |
3209 | return mmc_ioctl_dvd_auth(cdi, userptr); | |
3210 | case CDROM_NEXT_WRITABLE: | |
3211 | return mmc_ioctl_cdrom_next_writable(cdi, userptr); | |
3212 | case CDROM_LAST_WRITTEN: | |
3213 | return mmc_ioctl_cdrom_last_written(cdi, userptr); | |
3214 | } | |
1da177e4 LT |
3215 | |
3216 | return -ENOTTY; | |
3217 | } | |
3218 | ||
3219 | static int cdrom_get_track_info(struct cdrom_device_info *cdi, __u16 track, __u8 type, | |
3220 | track_information *ti) | |
3221 | { | |
3222 | struct cdrom_device_ops *cdo = cdi->ops; | |
3223 | struct packet_command cgc; | |
3224 | int ret, buflen; | |
3225 | ||
3226 | init_cdrom_command(&cgc, ti, 8, CGC_DATA_READ); | |
3227 | cgc.cmd[0] = GPCMD_READ_TRACK_RZONE_INFO; | |
3228 | cgc.cmd[1] = type & 3; | |
3229 | cgc.cmd[4] = (track & 0xff00) >> 8; | |
3230 | cgc.cmd[5] = track & 0xff; | |
3231 | cgc.cmd[8] = 8; | |
3232 | cgc.quiet = 1; | |
3233 | ||
3234 | if ((ret = cdo->generic_packet(cdi, &cgc))) | |
3235 | return ret; | |
3236 | ||
3237 | buflen = be16_to_cpu(ti->track_information_length) + | |
3238 | sizeof(ti->track_information_length); | |
3239 | ||
3240 | if (buflen > sizeof(track_information)) | |
3241 | buflen = sizeof(track_information); | |
3242 | ||
3243 | cgc.cmd[8] = cgc.buflen = buflen; | |
3244 | if ((ret = cdo->generic_packet(cdi, &cgc))) | |
3245 | return ret; | |
3246 | ||
3247 | /* return actual fill size */ | |
3248 | return buflen; | |
3249 | } | |
3250 | ||
3251 | /* requires CD R/RW */ | |
3252 | static int cdrom_get_disc_info(struct cdrom_device_info *cdi, disc_information *di) | |
3253 | { | |
3254 | struct cdrom_device_ops *cdo = cdi->ops; | |
3255 | struct packet_command cgc; | |
3256 | int ret, buflen; | |
3257 | ||
3258 | /* set up command and get the disc info */ | |
3259 | init_cdrom_command(&cgc, di, sizeof(*di), CGC_DATA_READ); | |
3260 | cgc.cmd[0] = GPCMD_READ_DISC_INFO; | |
3261 | cgc.cmd[8] = cgc.buflen = 2; | |
3262 | cgc.quiet = 1; | |
3263 | ||
3264 | if ((ret = cdo->generic_packet(cdi, &cgc))) | |
3265 | return ret; | |
3266 | ||
3267 | /* not all drives have the same disc_info length, so requeue | |
3268 | * packet with the length the drive tells us it can supply | |
3269 | */ | |
3270 | buflen = be16_to_cpu(di->disc_information_length) + | |
3271 | sizeof(di->disc_information_length); | |
3272 | ||
3273 | if (buflen > sizeof(disc_information)) | |
3274 | buflen = sizeof(disc_information); | |
3275 | ||
3276 | cgc.cmd[8] = cgc.buflen = buflen; | |
3277 | if ((ret = cdo->generic_packet(cdi, &cgc))) | |
3278 | return ret; | |
3279 | ||
3280 | /* return actual fill size */ | |
3281 | return buflen; | |
3282 | } | |
3283 | ||
3284 | /* return the last written block on the CD-R media. this is for the udf | |
3285 | file system. */ | |
3286 | int cdrom_get_last_written(struct cdrom_device_info *cdi, long *last_written) | |
3287 | { | |
3288 | struct cdrom_tocentry toc; | |
3289 | disc_information di; | |
3290 | track_information ti; | |
3291 | __u32 last_track; | |
3292 | int ret = -1, ti_size; | |
3293 | ||
3294 | if (!CDROM_CAN(CDC_GENERIC_PACKET)) | |
3295 | goto use_toc; | |
3296 | ||
3297 | ret = cdrom_get_disc_info(cdi, &di); | |
3298 | if (ret < (int)(offsetof(typeof(di), last_track_lsb) | |
3299 | + sizeof(di.last_track_lsb))) | |
3300 | goto use_toc; | |
3301 | ||
3302 | /* if unit didn't return msb, it's zeroed by cdrom_get_disc_info */ | |
3303 | last_track = (di.last_track_msb << 8) | di.last_track_lsb; | |
3304 | ti_size = cdrom_get_track_info(cdi, last_track, 1, &ti); | |
3305 | if (ti_size < (int)offsetof(typeof(ti), track_start)) | |
3306 | goto use_toc; | |
3307 | ||
3308 | /* if this track is blank, try the previous. */ | |
3309 | if (ti.blank) { | |
3310 | if (last_track==1) | |
3311 | goto use_toc; | |
3312 | last_track--; | |
3313 | ti_size = cdrom_get_track_info(cdi, last_track, 1, &ti); | |
3314 | } | |
3315 | ||
3316 | if (ti_size < (int)(offsetof(typeof(ti), track_size) | |
3317 | + sizeof(ti.track_size))) | |
3318 | goto use_toc; | |
3319 | ||
3320 | /* if last recorded field is valid, return it. */ | |
3321 | if (ti.lra_v && ti_size >= (int)(offsetof(typeof(ti), last_rec_address) | |
3322 | + sizeof(ti.last_rec_address))) { | |
3323 | *last_written = be32_to_cpu(ti.last_rec_address); | |
3324 | } else { | |
3325 | /* make it up instead */ | |
3326 | *last_written = be32_to_cpu(ti.track_start) + | |
3327 | be32_to_cpu(ti.track_size); | |
3328 | if (ti.free_blocks) | |
3329 | *last_written -= (be32_to_cpu(ti.free_blocks) + 7); | |
3330 | } | |
3331 | return 0; | |
3332 | ||
3333 | /* this is where we end up if the drive either can't do a | |
3334 | GPCMD_READ_DISC_INFO or GPCMD_READ_TRACK_RZONE_INFO or if | |
3335 | it doesn't give enough information or fails. then we return | |
3336 | the toc contents. */ | |
3337 | use_toc: | |
3338 | toc.cdte_format = CDROM_MSF; | |
3339 | toc.cdte_track = CDROM_LEADOUT; | |
3340 | if ((ret = cdi->ops->audio_ioctl(cdi, CDROMREADTOCENTRY, &toc))) | |
3341 | return ret; | |
3342 | sanitize_format(&toc.cdte_addr, &toc.cdte_format, CDROM_LBA); | |
3343 | *last_written = toc.cdte_addr.lba; | |
3344 | return 0; | |
3345 | } | |
3346 | ||
3347 | /* return the next writable block. also for udf file system. */ | |
3348 | static int cdrom_get_next_writable(struct cdrom_device_info *cdi, long *next_writable) | |
3349 | { | |
3350 | disc_information di; | |
3351 | track_information ti; | |
3352 | __u16 last_track; | |
3353 | int ret, ti_size; | |
3354 | ||
3355 | if (!CDROM_CAN(CDC_GENERIC_PACKET)) | |
3356 | goto use_last_written; | |
3357 | ||
3358 | ret = cdrom_get_disc_info(cdi, &di); | |
3359 | if (ret < 0 || ret < offsetof(typeof(di), last_track_lsb) | |
3360 | + sizeof(di.last_track_lsb)) | |
3361 | goto use_last_written; | |
3362 | ||
3363 | /* if unit didn't return msb, it's zeroed by cdrom_get_disc_info */ | |
3364 | last_track = (di.last_track_msb << 8) | di.last_track_lsb; | |
3365 | ti_size = cdrom_get_track_info(cdi, last_track, 1, &ti); | |
3366 | if (ti_size < 0 || ti_size < offsetof(typeof(ti), track_start)) | |
3367 | goto use_last_written; | |
3368 | ||
3369 | /* if this track is blank, try the previous. */ | |
3370 | if (ti.blank) { | |
3371 | if (last_track == 1) | |
3372 | goto use_last_written; | |
3373 | last_track--; | |
3374 | ti_size = cdrom_get_track_info(cdi, last_track, 1, &ti); | |
3375 | if (ti_size < 0) | |
3376 | goto use_last_written; | |
3377 | } | |
3378 | ||
3379 | /* if next recordable address field is valid, use it. */ | |
3380 | if (ti.nwa_v && ti_size >= offsetof(typeof(ti), next_writable) | |
3381 | + sizeof(ti.next_writable)) { | |
3382 | *next_writable = be32_to_cpu(ti.next_writable); | |
3383 | return 0; | |
3384 | } | |
3385 | ||
3386 | use_last_written: | |
3387 | if ((ret = cdrom_get_last_written(cdi, next_writable))) { | |
3388 | *next_writable = 0; | |
3389 | return ret; | |
3390 | } else { | |
3391 | *next_writable += 7; | |
3392 | return 0; | |
3393 | } | |
3394 | } | |
3395 | ||
3396 | EXPORT_SYMBOL(cdrom_get_last_written); | |
3397 | EXPORT_SYMBOL(register_cdrom); | |
3398 | EXPORT_SYMBOL(unregister_cdrom); | |
3399 | EXPORT_SYMBOL(cdrom_open); | |
3400 | EXPORT_SYMBOL(cdrom_release); | |
3401 | EXPORT_SYMBOL(cdrom_ioctl); | |
3402 | EXPORT_SYMBOL(cdrom_media_changed); | |
3403 | EXPORT_SYMBOL(cdrom_number_of_slots); | |
3404 | EXPORT_SYMBOL(cdrom_mode_select); | |
3405 | EXPORT_SYMBOL(cdrom_mode_sense); | |
3406 | EXPORT_SYMBOL(init_cdrom_command); | |
3407 | EXPORT_SYMBOL(cdrom_get_media_event); | |
3408 | ||
3409 | #ifdef CONFIG_SYSCTL | |
3410 | ||
3411 | #define CDROM_STR_SIZE 1000 | |
3412 | ||
3413 | static struct cdrom_sysctl_settings { | |
3414 | char info[CDROM_STR_SIZE]; /* general info */ | |
3415 | int autoclose; /* close tray upon mount, etc */ | |
3416 | int autoeject; /* eject on umount */ | |
3417 | int debug; /* turn on debugging messages */ | |
3418 | int lock; /* lock the door on device open */ | |
3419 | int check; /* check media type */ | |
3420 | } cdrom_sysctl_settings; | |
3421 | ||
554988d6 DY |
3422 | enum cdrom_print_option { |
3423 | CTL_NAME, | |
3424 | CTL_SPEED, | |
3425 | CTL_SLOTS, | |
3426 | CTL_CAPABILITY | |
3427 | }; | |
3428 | ||
3429 | static int cdrom_print_info(const char *header, int val, char *info, | |
3430 | int *pos, enum cdrom_print_option option) | |
3431 | { | |
3432 | const int max_size = sizeof(cdrom_sysctl_settings.info); | |
3433 | struct cdrom_device_info *cdi; | |
3434 | int ret; | |
3435 | ||
3436 | ret = scnprintf(info + *pos, max_size - *pos, header); | |
3437 | if (!ret) | |
3438 | return 1; | |
3439 | ||
3440 | *pos += ret; | |
3441 | ||
7fd097d4 | 3442 | list_for_each_entry(cdi, &cdrom_list, list) { |
554988d6 DY |
3443 | switch (option) { |
3444 | case CTL_NAME: | |
3445 | ret = scnprintf(info + *pos, max_size - *pos, | |
3446 | "\t%s", cdi->name); | |
3447 | break; | |
3448 | case CTL_SPEED: | |
3449 | ret = scnprintf(info + *pos, max_size - *pos, | |
3450 | "\t%d", cdi->speed); | |
3451 | break; | |
3452 | case CTL_SLOTS: | |
3453 | ret = scnprintf(info + *pos, max_size - *pos, | |
3454 | "\t%d", cdi->capacity); | |
3455 | break; | |
3456 | case CTL_CAPABILITY: | |
3457 | ret = scnprintf(info + *pos, max_size - *pos, | |
3458 | "\t%d", CDROM_CAN(val) != 0); | |
3459 | break; | |
3460 | default: | |
e597cd09 | 3461 | pr_info("invalid option%d\n", option); |
554988d6 DY |
3462 | return 1; |
3463 | } | |
3464 | if (!ret) | |
3465 | return 1; | |
3466 | *pos += ret; | |
3467 | } | |
3468 | ||
3469 | return 0; | |
3470 | } | |
3471 | ||
8d65af78 | 3472 | static int cdrom_sysctl_info(ctl_table *ctl, int write, |
1da177e4 LT |
3473 | void __user *buffer, size_t *lenp, loff_t *ppos) |
3474 | { | |
554988d6 | 3475 | int pos; |
1da177e4 | 3476 | char *info = cdrom_sysctl_settings.info; |
554988d6 | 3477 | const int max_size = sizeof(cdrom_sysctl_settings.info); |
1da177e4 LT |
3478 | |
3479 | if (!*lenp || (*ppos && !write)) { | |
3480 | *lenp = 0; | |
3481 | return 0; | |
3482 | } | |
3483 | ||
554988d6 DY |
3484 | mutex_lock(&cdrom_mutex); |
3485 | ||
1da177e4 LT |
3486 | pos = sprintf(info, "CD-ROM information, " VERSION "\n"); |
3487 | ||
554988d6 DY |
3488 | if (cdrom_print_info("\ndrive name:\t", 0, info, &pos, CTL_NAME)) |
3489 | goto done; | |
3490 | if (cdrom_print_info("\ndrive speed:\t", 0, info, &pos, CTL_SPEED)) | |
3491 | goto done; | |
3492 | if (cdrom_print_info("\ndrive # of slots:", 0, info, &pos, CTL_SLOTS)) | |
3493 | goto done; | |
3494 | if (cdrom_print_info("\nCan close tray:\t", | |
3495 | CDC_CLOSE_TRAY, info, &pos, CTL_CAPABILITY)) | |
3496 | goto done; | |
3497 | if (cdrom_print_info("\nCan open tray:\t", | |
3498 | CDC_OPEN_TRAY, info, &pos, CTL_CAPABILITY)) | |
3499 | goto done; | |
3500 | if (cdrom_print_info("\nCan lock tray:\t", | |
3501 | CDC_LOCK, info, &pos, CTL_CAPABILITY)) | |
3502 | goto done; | |
3503 | if (cdrom_print_info("\nCan change speed:", | |
3504 | CDC_SELECT_SPEED, info, &pos, CTL_CAPABILITY)) | |
3505 | goto done; | |
3506 | if (cdrom_print_info("\nCan select disk:", | |
3507 | CDC_SELECT_DISC, info, &pos, CTL_CAPABILITY)) | |
3508 | goto done; | |
3509 | if (cdrom_print_info("\nCan read multisession:", | |
3510 | CDC_MULTI_SESSION, info, &pos, CTL_CAPABILITY)) | |
3511 | goto done; | |
3512 | if (cdrom_print_info("\nCan read MCN:\t", | |
3513 | CDC_MCN, info, &pos, CTL_CAPABILITY)) | |
3514 | goto done; | |
3515 | if (cdrom_print_info("\nReports media changed:", | |
3516 | CDC_MEDIA_CHANGED, info, &pos, CTL_CAPABILITY)) | |
3517 | goto done; | |
3518 | if (cdrom_print_info("\nCan play audio:\t", | |
3519 | CDC_PLAY_AUDIO, info, &pos, CTL_CAPABILITY)) | |
3520 | goto done; | |
3521 | if (cdrom_print_info("\nCan write CD-R:\t", | |
3522 | CDC_CD_R, info, &pos, CTL_CAPABILITY)) | |
3523 | goto done; | |
3524 | if (cdrom_print_info("\nCan write CD-RW:", | |
3525 | CDC_CD_RW, info, &pos, CTL_CAPABILITY)) | |
3526 | goto done; | |
3527 | if (cdrom_print_info("\nCan read DVD:\t", | |
3528 | CDC_DVD, info, &pos, CTL_CAPABILITY)) | |
3529 | goto done; | |
3530 | if (cdrom_print_info("\nCan write DVD-R:", | |
3531 | CDC_DVD_R, info, &pos, CTL_CAPABILITY)) | |
3532 | goto done; | |
3533 | if (cdrom_print_info("\nCan write DVD-RAM:", | |
3534 | CDC_DVD_RAM, info, &pos, CTL_CAPABILITY)) | |
3535 | goto done; | |
3536 | if (cdrom_print_info("\nCan read MRW:\t", | |
3537 | CDC_MRW, info, &pos, CTL_CAPABILITY)) | |
3538 | goto done; | |
3539 | if (cdrom_print_info("\nCan write MRW:\t", | |
3540 | CDC_MRW_W, info, &pos, CTL_CAPABILITY)) | |
3541 | goto done; | |
3542 | if (cdrom_print_info("\nCan write RAM:\t", | |
3543 | CDC_RAM, info, &pos, CTL_CAPABILITY)) | |
3544 | goto done; | |
3545 | if (!scnprintf(info + pos, max_size - pos, "\n\n")) | |
3546 | goto done; | |
3547 | doit: | |
3548 | mutex_unlock(&cdrom_mutex); | |
8d65af78 | 3549 | return proc_dostring(ctl, write, buffer, lenp, ppos); |
554988d6 | 3550 | done: |
e597cd09 | 3551 | pr_info("info buffer too small\n"); |
554988d6 | 3552 | goto doit; |
1da177e4 LT |
3553 | } |
3554 | ||
3555 | /* Unfortunately, per device settings are not implemented through | |
3556 | procfs/sysctl yet. When they are, this will naturally disappear. For now | |
3557 | just update all drives. Later this will become the template on which | |
3558 | new registered drives will be based. */ | |
3559 | static void cdrom_update_settings(void) | |
3560 | { | |
3561 | struct cdrom_device_info *cdi; | |
3562 | ||
032d8d90 | 3563 | mutex_lock(&cdrom_mutex); |
7fd097d4 | 3564 | list_for_each_entry(cdi, &cdrom_list, list) { |
1da177e4 LT |
3565 | if (autoclose && CDROM_CAN(CDC_CLOSE_TRAY)) |
3566 | cdi->options |= CDO_AUTO_CLOSE; | |
3567 | else if (!autoclose) | |
3568 | cdi->options &= ~CDO_AUTO_CLOSE; | |
3569 | if (autoeject && CDROM_CAN(CDC_OPEN_TRAY)) | |
3570 | cdi->options |= CDO_AUTO_EJECT; | |
3571 | else if (!autoeject) | |
3572 | cdi->options &= ~CDO_AUTO_EJECT; | |
3573 | if (lockdoor && CDROM_CAN(CDC_LOCK)) | |
3574 | cdi->options |= CDO_LOCK; | |
3575 | else if (!lockdoor) | |
3576 | cdi->options &= ~CDO_LOCK; | |
3577 | if (check_media_type) | |
3578 | cdi->options |= CDO_CHECK_TYPE; | |
3579 | else | |
3580 | cdi->options &= ~CDO_CHECK_TYPE; | |
3581 | } | |
032d8d90 | 3582 | mutex_unlock(&cdrom_mutex); |
1da177e4 LT |
3583 | } |
3584 | ||
8d65af78 | 3585 | static int cdrom_sysctl_handler(ctl_table *ctl, int write, |
1da177e4 LT |
3586 | void __user *buffer, size_t *lenp, loff_t *ppos) |
3587 | { | |
1da177e4 LT |
3588 | int ret; |
3589 | ||
8d65af78 | 3590 | ret = proc_dointvec(ctl, write, buffer, lenp, ppos); |
1da177e4 | 3591 | |
06489b4e | 3592 | if (write) { |
1da177e4 LT |
3593 | |
3594 | /* we only care for 1 or 0. */ | |
06489b4e EB |
3595 | autoclose = !!cdrom_sysctl_settings.autoclose; |
3596 | autoeject = !!cdrom_sysctl_settings.autoeject; | |
3597 | debug = !!cdrom_sysctl_settings.debug; | |
3598 | lockdoor = !!cdrom_sysctl_settings.lock; | |
3599 | check_media_type = !!cdrom_sysctl_settings.check; | |
1da177e4 | 3600 | |
1da177e4 LT |
3601 | /* update the option flags according to the changes. we |
3602 | don't have per device options through sysctl yet, | |
3603 | but we will have and then this will disappear. */ | |
3604 | cdrom_update_settings(); | |
3605 | } | |
3606 | ||
3607 | return ret; | |
3608 | } | |
3609 | ||
3610 | /* Place files in /proc/sys/dev/cdrom */ | |
3611 | static ctl_table cdrom_table[] = { | |
3612 | { | |
1da177e4 LT |
3613 | .procname = "info", |
3614 | .data = &cdrom_sysctl_settings.info, | |
3615 | .maxlen = CDROM_STR_SIZE, | |
3616 | .mode = 0444, | |
6d456111 | 3617 | .proc_handler = cdrom_sysctl_info, |
1da177e4 LT |
3618 | }, |
3619 | { | |
1da177e4 LT |
3620 | .procname = "autoclose", |
3621 | .data = &cdrom_sysctl_settings.autoclose, | |
3622 | .maxlen = sizeof(int), | |
3623 | .mode = 0644, | |
6d456111 | 3624 | .proc_handler = cdrom_sysctl_handler, |
1da177e4 LT |
3625 | }, |
3626 | { | |
1da177e4 LT |
3627 | .procname = "autoeject", |
3628 | .data = &cdrom_sysctl_settings.autoeject, | |
3629 | .maxlen = sizeof(int), | |
3630 | .mode = 0644, | |
6d456111 | 3631 | .proc_handler = cdrom_sysctl_handler, |
1da177e4 LT |
3632 | }, |
3633 | { | |
1da177e4 LT |
3634 | .procname = "debug", |
3635 | .data = &cdrom_sysctl_settings.debug, | |
3636 | .maxlen = sizeof(int), | |
3637 | .mode = 0644, | |
6d456111 | 3638 | .proc_handler = cdrom_sysctl_handler, |
1da177e4 LT |
3639 | }, |
3640 | { | |
1da177e4 LT |
3641 | .procname = "lock", |
3642 | .data = &cdrom_sysctl_settings.lock, | |
3643 | .maxlen = sizeof(int), | |
3644 | .mode = 0644, | |
6d456111 | 3645 | .proc_handler = cdrom_sysctl_handler, |
1da177e4 LT |
3646 | }, |
3647 | { | |
1da177e4 LT |
3648 | .procname = "check_media", |
3649 | .data = &cdrom_sysctl_settings.check, | |
3650 | .maxlen = sizeof(int), | |
3651 | .mode = 0644, | |
6d456111 | 3652 | .proc_handler = cdrom_sysctl_handler |
1da177e4 | 3653 | }, |
894d2491 | 3654 | { } |
1da177e4 LT |
3655 | }; |
3656 | ||
3657 | static ctl_table cdrom_cdrom_table[] = { | |
3658 | { | |
1da177e4 LT |
3659 | .procname = "cdrom", |
3660 | .maxlen = 0, | |
3661 | .mode = 0555, | |
3662 | .child = cdrom_table, | |
3663 | }, | |
894d2491 | 3664 | { } |
1da177e4 LT |
3665 | }; |
3666 | ||
3667 | /* Make sure that /proc/sys/dev is there */ | |
3668 | static ctl_table cdrom_root_table[] = { | |
3669 | { | |
1da177e4 LT |
3670 | .procname = "dev", |
3671 | .maxlen = 0, | |
3672 | .mode = 0555, | |
3673 | .child = cdrom_cdrom_table, | |
3674 | }, | |
894d2491 | 3675 | { } |
1da177e4 LT |
3676 | }; |
3677 | static struct ctl_table_header *cdrom_sysctl_header; | |
3678 | ||
3679 | static void cdrom_sysctl_register(void) | |
3680 | { | |
3681 | static int initialized; | |
3682 | ||
3683 | if (initialized == 1) | |
3684 | return; | |
3685 | ||
0b4d4147 | 3686 | cdrom_sysctl_header = register_sysctl_table(cdrom_root_table); |
1da177e4 LT |
3687 | |
3688 | /* set the defaults */ | |
3689 | cdrom_sysctl_settings.autoclose = autoclose; | |
3690 | cdrom_sysctl_settings.autoeject = autoeject; | |
3691 | cdrom_sysctl_settings.debug = debug; | |
3692 | cdrom_sysctl_settings.lock = lockdoor; | |
3693 | cdrom_sysctl_settings.check = check_media_type; | |
3694 | ||
3695 | initialized = 1; | |
3696 | } | |
3697 | ||
3698 | static void cdrom_sysctl_unregister(void) | |
3699 | { | |
3700 | if (cdrom_sysctl_header) | |
3701 | unregister_sysctl_table(cdrom_sysctl_header); | |
3702 | } | |
3703 | ||
17672cf0 AM |
3704 | #else /* CONFIG_SYSCTL */ |
3705 | ||
3706 | static void cdrom_sysctl_register(void) | |
3707 | { | |
3708 | } | |
3709 | ||
3710 | static void cdrom_sysctl_unregister(void) | |
3711 | { | |
3712 | } | |
3713 | ||
1da177e4 LT |
3714 | #endif /* CONFIG_SYSCTL */ |
3715 | ||
3716 | static int __init cdrom_init(void) | |
3717 | { | |
1da177e4 | 3718 | cdrom_sysctl_register(); |
17672cf0 | 3719 | |
1da177e4 LT |
3720 | return 0; |
3721 | } | |
3722 | ||
3723 | static void __exit cdrom_exit(void) | |
3724 | { | |
e597cd09 | 3725 | pr_info("Uniform CD-ROM driver unloaded\n"); |
1da177e4 | 3726 | cdrom_sysctl_unregister(); |
1da177e4 LT |
3727 | } |
3728 | ||
3729 | module_init(cdrom_init); | |
3730 | module_exit(cdrom_exit); | |
3731 | MODULE_LICENSE("GPL"); |