Commit | Line | Data |
---|---|---|
f30c2269 | 1 | /* linux/drivers/cdrom/cdrom.c |
1da177e4 LT |
2 | Copyright (c) 1996, 1997 David A. van Leeuwen. |
3 | Copyright (c) 1997, 1998 Erik Andersen <andersee@debian.org> | |
4 | Copyright (c) 1998, 1999 Jens Axboe <axboe@image.dk> | |
5 | ||
6 | May be copied or modified under the terms of the GNU General Public | |
7 | License. See linux/COPYING for more information. | |
8 | ||
9 | Uniform CD-ROM driver for Linux. | |
8ea61889 | 10 | See Documentation/cdrom/cdrom-standard.rst for usage information. |
1da177e4 LT |
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 | ||
1da177e4 LT |
17 | Revision History |
18 | ---------------------------------- | |
19 | 1.00 Date Unknown -- David van Leeuwen <david@tm.tno.nl> | |
20 | -- Initial version by David A. van Leeuwen. I don't have a detailed | |
21 | changelog for the 1.x series, David? | |
22 | ||
23 | 2.00 Dec 2, 1997 -- Erik Andersen <andersee@debian.org> | |
25985edc | 24 | -- New maintainer! As David A. van Leeuwen has been too busy to actively |
1da177e4 LT |
25 | maintain and improve this driver, I am now carrying on the torch. If |
26 | you have a problem with this driver, please feel free to contact me. | |
27 | ||
28 | -- Added (rudimentary) sysctl interface. I realize this is really weak | |
29 | right now, and is _very_ badly implemented. It will be improved... | |
30 | ||
31 | -- Modified CDROM_DISC_STATUS so that it is now incorporated into | |
32 | the Uniform CD-ROM driver via the cdrom_count_tracks function. | |
33 | The cdrom_count_tracks function helps resolve some of the false | |
34 | assumptions of the CDROM_DISC_STATUS ioctl, and is also used to check | |
35 | for the correct media type when mounting or playing audio from a CD. | |
36 | ||
37 | -- Remove the calls to verify_area and only use the copy_from_user and | |
38 | copy_to_user stuff, since these calls now provide their own memory | |
39 | checking with the 2.1.x kernels. | |
40 | ||
41 | -- Major update to return codes so that errors from low-level drivers | |
42 | are passed on through (thanks to Gerd Knorr for pointing out this | |
43 | problem). | |
44 | ||
45 | -- Made it so if a function isn't implemented in a low-level driver, | |
46 | ENOSYS is now returned instead of EINVAL. | |
47 | ||
48 | -- Simplified some complex logic so that the source code is easier to read. | |
49 | ||
50 | -- Other stuff I probably forgot to mention (lots of changes). | |
51 | ||
52 | 2.01 to 2.11 Dec 1997-Jan 1998 | |
53 | -- TO-DO! Write changelogs for 2.01 to 2.12. | |
54 | ||
55 | 2.12 Jan 24, 1998 -- Erik Andersen <andersee@debian.org> | |
56 | -- Fixed a bug in the IOCTL_IN and IOCTL_OUT macros. It turns out that | |
57 | copy_*_user does not return EFAULT on error, but instead returns the number | |
58 | of bytes not copied. I was returning whatever non-zero stuff came back from | |
59 | the copy_*_user functions directly, which would result in strange errors. | |
60 | ||
61 | 2.13 July 17, 1998 -- Erik Andersen <andersee@debian.org> | |
62 | -- Fixed a bug in CDROM_SELECT_SPEED where you couldn't lower the speed | |
63 | of the drive. Thanks to Tobias Ringstr|m <tori@prosolvia.se> for pointing | |
64 | this out and providing a simple fix. | |
65 | -- Fixed the procfs-unload-module bug with the fill_inode procfs callback. | |
66 | thanks to Andrea Arcangeli | |
67 | -- Fixed it so that the /proc entry now also shows up when cdrom is | |
68 | compiled into the kernel. Before it only worked when loaded as a module. | |
69 | ||
70 | 2.14 August 17, 1998 -- Erik Andersen <andersee@debian.org> | |
71 | -- Fixed a bug in cdrom_media_changed and handling of reporting that | |
72 | the media had changed for devices that _don't_ implement media_changed. | |
73 | Thanks to Grant R. Guenther <grant@torque.net> for spotting this bug. | |
74 | -- Made a few things more pedanticly correct. | |
75 | ||
76 | 2.50 Oct 19, 1998 - Jens Axboe <axboe@image.dk> | |
77 | -- New maintainers! Erik was too busy to continue the work on the driver, | |
78 | so now Chris Zwilling <chris@cloudnet.com> and Jens Axboe <axboe@image.dk> | |
79 | will do their best to follow in his footsteps | |
80 | ||
81 | 2.51 Dec 20, 1998 - Jens Axboe <axboe@image.dk> | |
82 | -- Check if drive is capable of doing what we ask before blindly changing | |
83 | cdi->options in various ioctl. | |
84 | -- Added version to proc entry. | |
85 | ||
86 | 2.52 Jan 16, 1999 - Jens Axboe <axboe@image.dk> | |
87 | -- Fixed an error in open_for_data where we would sometimes not return | |
88 | the correct error value. Thanks Huba Gaspar <huba@softcell.hu>. | |
89 | -- Fixed module usage count - usage was based on /proc/sys/dev | |
90 | instead of /proc/sys/dev/cdrom. This could lead to an oops when other | |
91 | modules had entries in dev. Feb 02 - real bug was in sysctl.c where | |
92 | dev would be removed even though it was used. cdrom.c just illuminated | |
93 | that bug. | |
94 | ||
95 | 2.53 Feb 22, 1999 - Jens Axboe <axboe@image.dk> | |
96 | -- Fixup of several ioctl calls, in particular CDROM_SET_OPTIONS has | |
97 | been "rewritten" because capabilities and options aren't in sync. They | |
98 | should be... | |
99 | -- Added CDROM_LOCKDOOR ioctl. Locks the door and keeps it that way. | |
100 | -- Added CDROM_RESET ioctl. | |
101 | -- Added CDROM_DEBUG ioctl. Enable debug messages on-the-fly. | |
102 | -- Added CDROM_GET_CAPABILITY ioctl. This relieves userspace programs | |
103 | from parsing /proc/sys/dev/cdrom/info. | |
104 | ||
105 | 2.54 Mar 15, 1999 - Jens Axboe <axboe@image.dk> | |
106 | -- Check capability mask from low level driver when counting tracks as | |
107 | per suggestion from Corey J. Scotts <cstotts@blue.weeg.uiowa.edu>. | |
108 | ||
109 | 2.55 Apr 25, 1999 - Jens Axboe <axboe@image.dk> | |
110 | -- autoclose was mistakenly checked against CDC_OPEN_TRAY instead of | |
111 | CDC_CLOSE_TRAY. | |
112 | -- proc info didn't mask against capabilities mask. | |
113 | ||
114 | 3.00 Aug 5, 1999 - Jens Axboe <axboe@image.dk> | |
115 | -- Unified audio ioctl handling across CD-ROM drivers. A lot of the | |
116 | code was duplicated before. Drives that support the generic packet | |
117 | interface are now being fed packets from here instead. | |
118 | -- First attempt at adding support for MMC2 commands - for DVD and | |
119 | CD-R(W) drives. Only the DVD parts are in now - the interface used is | |
120 | the same as for the audio ioctls. | |
121 | -- ioctl cleanups. if a drive couldn't play audio, it didn't get | |
122 | a change to perform device specific ioctls as well. | |
123 | -- Defined CDROM_CAN(CDC_XXX) for checking the capabilities. | |
124 | -- Put in sysctl files for autoclose, autoeject, check_media, debug, | |
125 | and lock. | |
126 | -- /proc/sys/dev/cdrom/info has been updated to also contain info about | |
127 | CD-Rx and DVD capabilities. | |
128 | -- Now default to checking media type. | |
129 | -- CDROM_SEND_PACKET ioctl added. The infrastructure was in place for | |
130 | doing this anyway, with the generic_packet addition. | |
131 | ||
132 | 3.01 Aug 6, 1999 - Jens Axboe <axboe@image.dk> | |
133 | -- Fix up the sysctl handling so that the option flags get set | |
134 | correctly. | |
135 | -- Fix up ioctl handling so the device specific ones actually get | |
136 | called :). | |
137 | ||
138 | 3.02 Aug 8, 1999 - Jens Axboe <axboe@image.dk> | |
139 | -- Fixed volume control on SCSI drives (or others with longer audio | |
140 | page). | |
141 | -- Fixed a couple of DVD minors. Thanks to Andrew T. Veliath | |
142 | <andrewtv@usa.net> for telling me and for having defined the various | |
143 | DVD structures and ioctls in the first place! He designed the original | |
144 | DVD patches for ide-cd and while I rearranged and unified them, the | |
145 | interface is still the same. | |
146 | ||
147 | 3.03 Sep 1, 1999 - Jens Axboe <axboe@image.dk> | |
148 | -- Moved the rest of the audio ioctls from the CD-ROM drivers here. Only | |
149 | CDROMREADTOCENTRY and CDROMREADTOCHDR are left. | |
150 | -- Moved the CDROMREADxxx ioctls in here. | |
151 | -- Defined the cdrom_get_last_written and cdrom_get_next_block as ioctls | |
152 | and exported functions. | |
153 | -- Erik Andersen <andersen@xmission.com> modified all SCMD_ commands | |
154 | to now read GPCMD_ for the new generic packet interface. All low level | |
155 | drivers are updated as well. | |
156 | -- Various other cleanups. | |
157 | ||
158 | 3.04 Sep 12, 1999 - Jens Axboe <axboe@image.dk> | |
159 | -- Fixed a couple of possible memory leaks (if an operation failed and | |
160 | we didn't free the buffer before returning the error). | |
161 | -- Integrated Uniform CD Changer handling from Richard Sharman | |
162 | <rsharman@pobox.com>. | |
163 | -- Defined CD_DVD and CD_CHANGER log levels. | |
164 | -- Fixed the CDROMREADxxx ioctls. | |
165 | -- CDROMPLAYTRKIND uses the GPCMD_PLAY_AUDIO_MSF command - too few | |
166 | drives supported it. We lose the index part, however. | |
167 | -- Small modifications to accommodate opens of /dev/hdc1, required | |
168 | for ide-cd to handle multisession discs. | |
169 | -- Export cdrom_mode_sense and cdrom_mode_select. | |
170 | -- init_cdrom_command() for setting up a cgc command. | |
171 | ||
172 | 3.05 Oct 24, 1999 - Jens Axboe <axboe@image.dk> | |
173 | -- Changed the interface for CDROM_SEND_PACKET. Before it was virtually | |
174 | impossible to send the drive data in a sensible way. | |
175 | -- Lowered stack usage in mmc_ioctl(), dvd_read_disckey(), and | |
176 | dvd_read_manufact. | |
177 | -- Added setup of write mode for packet writing. | |
178 | -- Fixed CDDA ripping with cdda2wav - accept much larger requests of | |
179 | number of frames and split the reads in blocks of 8. | |
180 | ||
181 | 3.06 Dec 13, 1999 - Jens Axboe <axboe@image.dk> | |
182 | -- Added support for changing the region of DVD drives. | |
183 | -- Added sense data to generic command. | |
184 | ||
185 | 3.07 Feb 2, 2000 - Jens Axboe <axboe@suse.de> | |
186 | -- Do same "read header length" trick in cdrom_get_disc_info() as | |
187 | we do in cdrom_get_track_info() -- some drive don't obey specs and | |
188 | fail if they can't supply the full Mt Fuji size table. | |
189 | -- Deleted stuff related to setting up write modes. It has a different | |
190 | home now. | |
191 | -- Clear header length in mode_select unconditionally. | |
192 | -- Removed the register_disk() that was added, not needed here. | |
193 | ||
194 | 3.08 May 1, 2000 - Jens Axboe <axboe@suse.de> | |
195 | -- Fix direction flag in setup_send_key and setup_report_key. This | |
196 | gave some SCSI adapters problems. | |
197 | -- Always return -EROFS for write opens | |
198 | -- Convert to module_init/module_exit style init and remove some | |
199 | of the #ifdef MODULE stuff | |
200 | -- Fix several dvd errors - DVD_LU_SEND_ASF should pass agid, | |
201 | DVD_HOST_SEND_RPC_STATE did not set buffer size in cdb, and | |
202 | dvd_do_auth passed uninitialized data to drive because init_cdrom_command | |
203 | did not clear a 0 sized buffer. | |
204 | ||
205 | 3.09 May 12, 2000 - Jens Axboe <axboe@suse.de> | |
206 | -- Fix Video-CD on SCSI drives that don't support READ_CD command. In | |
207 | that case switch block size and issue plain READ_10 again, then switch | |
208 | back. | |
209 | ||
210 | 3.10 Jun 10, 2000 - Jens Axboe <axboe@suse.de> | |
211 | -- Fix volume control on CD's - old SCSI-II drives now use their own | |
212 | code, as doing MODE6 stuff in here is really not my intention. | |
213 | -- Use READ_DISC_INFO for more reliable end-of-disc. | |
214 | ||
215 | 3.11 Jun 12, 2000 - Jens Axboe <axboe@suse.de> | |
216 | -- Fix bug in getting rpc phase 2 region info. | |
217 | -- Reinstate "correct" CDROMPLAYTRKIND | |
218 | ||
219 | 3.12 Oct 18, 2000 - Jens Axboe <axboe@suse.de> | |
220 | -- Use quiet bit on packet commands not known to work | |
221 | ||
222 | 3.20 Dec 17, 2003 - Jens Axboe <axboe@suse.de> | |
223 | -- Various fixes and lots of cleanups not listed :-) | |
224 | -- Locking fixes | |
225 | -- Mt Rainier support | |
226 | -- DVD-RAM write open fixes | |
227 | ||
228 | Nov 5 2001, Aug 8 2002. Modified by Andy Polyakov | |
229 | <appro@fy.chalmers.se> to support MMC-3 compliant DVD+RW units. | |
230 | ||
231 | Modified by Nigel Kukard <nkukard@lbsd.net> - support DVD+RW | |
232 | 2.4.x patch by Andy Polyakov <appro@fy.chalmers.se> | |
233 | ||
234 | -------------------------------------------------------------------------*/ | |
235 | ||
e597cd09 JP |
236 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
237 | ||
1da177e4 LT |
238 | #define REVISION "Revision: 3.20" |
239 | #define VERSION "Id: cdrom.c 3.20 2003/12/17" | |
240 | ||
241 | /* I use an error-log mask to give fine grain control over the type of | |
242 | messages dumped to the system logs. The available masks include: */ | |
243 | #define CD_NOTHING 0x0 | |
244 | #define CD_WARNING 0x1 | |
245 | #define CD_REG_UNREG 0x2 | |
246 | #define CD_DO_IOCTL 0x4 | |
247 | #define CD_OPEN 0x8 | |
248 | #define CD_CLOSE 0x10 | |
249 | #define CD_COUNT_TRACKS 0x20 | |
250 | #define CD_CHANGER 0x40 | |
251 | #define CD_DVD 0x80 | |
252 | ||
253 | /* Define this to remove _all_ the debugging messages */ | |
254 | /* #define ERRLOGMASK CD_NOTHING */ | |
255 | #define ERRLOGMASK CD_WARNING | |
256 | /* #define ERRLOGMASK (CD_WARNING|CD_OPEN|CD_COUNT_TRACKS|CD_CLOSE) */ | |
257 | /* #define ERRLOGMASK (CD_WARNING|CD_REG_UNREG|CD_DO_IOCTL|CD_OPEN|CD_CLOSE|CD_COUNT_TRACKS) */ | |
258 | ||
f25191bb | 259 | #include <linux/atomic.h> |
1da177e4 LT |
260 | #include <linux/module.h> |
261 | #include <linux/fs.h> | |
1da177e4 LT |
262 | #include <linux/major.h> |
263 | #include <linux/types.h> | |
264 | #include <linux/errno.h> | |
265 | #include <linux/kernel.h> | |
266 | #include <linux/mm.h> | |
267 | #include <linux/slab.h> | |
268 | #include <linux/cdrom.h> | |
269 | #include <linux/sysctl.h> | |
270 | #include <linux/proc_fs.h> | |
271 | #include <linux/blkpg.h> | |
272 | #include <linux/init.h> | |
273 | #include <linux/fcntl.h> | |
274 | #include <linux/blkdev.h> | |
275 | #include <linux/times.h> | |
7c0f6ba6 | 276 | #include <linux/uaccess.h> |
4e178c17 | 277 | #include <scsi/scsi_common.h> |
1da177e4 LT |
278 | |
279 | /* used to tell the module to turn on full debugging messages */ | |
90ab5ee9 | 280 | static bool debug; |
1da177e4 | 281 | /* default compatibility mode */ |
90ab5ee9 RR |
282 | static bool autoclose=1; |
283 | static bool autoeject; | |
284 | static bool lockdoor = 1; | |
1da177e4 | 285 | /* will we ever get to use this... sigh. */ |
90ab5ee9 | 286 | static bool check_media_type; |
1da177e4 | 287 | /* automatically restart mrw format */ |
90ab5ee9 | 288 | static bool mrw_format_restart = 1; |
1da177e4 LT |
289 | module_param(debug, bool, 0); |
290 | module_param(autoclose, bool, 0); | |
291 | module_param(autoeject, bool, 0); | |
292 | module_param(lockdoor, bool, 0); | |
293 | module_param(check_media_type, bool, 0); | |
294 | module_param(mrw_format_restart, bool, 0); | |
295 | ||
554988d6 | 296 | static DEFINE_MUTEX(cdrom_mutex); |
1da177e4 LT |
297 | |
298 | static const char *mrw_format_status[] = { | |
299 | "not mrw", | |
300 | "bgformat inactive", | |
301 | "bgformat active", | |
302 | "mrw complete", | |
303 | }; | |
304 | ||
305 | static const char *mrw_address_space[] = { "DMA", "GAA" }; | |
306 | ||
5944b2ce JP |
307 | #if (ERRLOGMASK != CD_NOTHING) |
308 | #define cd_dbg(type, fmt, ...) \ | |
e597cd09 JP |
309 | do { \ |
310 | if ((ERRLOGMASK & type) || debug == 1) \ | |
5944b2ce | 311 | pr_debug(fmt, ##__VA_ARGS__); \ |
e597cd09 | 312 | } while (0) |
1da177e4 | 313 | #else |
5944b2ce | 314 | #define cd_dbg(type, fmt, ...) \ |
e597cd09 JP |
315 | do { \ |
316 | if (0 && (ERRLOGMASK & type) || debug == 1) \ | |
5944b2ce | 317 | pr_debug(fmt, ##__VA_ARGS__); \ |
e597cd09 | 318 | } while (0) |
1da177e4 LT |
319 | #endif |
320 | ||
1da177e4 LT |
321 | /* The (cdo->capability & ~cdi->mask & CDC_XXX) construct was used in |
322 | a lot of places. This macro makes the code more clear. */ | |
323 | #define CDROM_CAN(type) (cdi->ops->capability & ~cdi->mask & (type)) | |
324 | ||
2e11c207 JA |
325 | /* |
326 | * Another popular OS uses 7 seconds as the hard timeout for default | |
327 | * commands, so it is a good choice for us as well. | |
328 | */ | |
329 | #define CDROM_DEF_TIMEOUT (7 * HZ) | |
330 | ||
1da177e4 | 331 | /* Not-exported routines. */ |
1da177e4 | 332 | |
1da177e4 | 333 | static void cdrom_sysctl_register(void); |
17672cf0 | 334 | |
7fd097d4 | 335 | static LIST_HEAD(cdrom_list); |
1da177e4 | 336 | |
67f1e027 LP |
337 | static void signal_media_change(struct cdrom_device_info *cdi) |
338 | { | |
339 | cdi->mc_flags = 0x3; /* set media changed bits, on both queues */ | |
340 | cdi->last_media_change_ms = ktime_to_ms(ktime_get()); | |
341 | } | |
342 | ||
853fe1bf KC |
343 | int cdrom_dummy_generic_packet(struct cdrom_device_info *cdi, |
344 | struct packet_command *cgc) | |
1da177e4 | 345 | { |
e7d0748d KC |
346 | if (cgc->sshdr) { |
347 | cgc->sshdr->sense_key = 0x05; | |
348 | cgc->sshdr->asc = 0x20; | |
349 | cgc->sshdr->ascq = 0x00; | |
1da177e4 LT |
350 | } |
351 | ||
352 | cgc->stat = -EIO; | |
353 | return -EIO; | |
354 | } | |
853fe1bf | 355 | EXPORT_SYMBOL(cdrom_dummy_generic_packet); |
1da177e4 | 356 | |
40569c61 | 357 | static int cdrom_flush_cache(struct cdrom_device_info *cdi) |
1da177e4 LT |
358 | { |
359 | struct packet_command cgc; | |
1da177e4 | 360 | |
40569c61 JP |
361 | init_cdrom_command(&cgc, NULL, 0, CGC_DATA_NONE); |
362 | cgc.cmd[0] = GPCMD_FLUSH_CACHE; | |
1da177e4 | 363 | |
40569c61 | 364 | cgc.timeout = 5 * 60 * HZ; |
1da177e4 | 365 | |
40569c61 | 366 | return cdi->ops->generic_packet(cdi, &cgc); |
1da177e4 LT |
367 | } |
368 | ||
bd6f0bba JP |
369 | /* requires CD R/RW */ |
370 | static int cdrom_get_disc_info(struct cdrom_device_info *cdi, | |
371 | disc_information *di) | |
372 | { | |
853fe1bf | 373 | const struct cdrom_device_ops *cdo = cdi->ops; |
bd6f0bba JP |
374 | struct packet_command cgc; |
375 | int ret, buflen; | |
376 | ||
377 | /* set up command and get the disc info */ | |
378 | init_cdrom_command(&cgc, di, sizeof(*di), CGC_DATA_READ); | |
379 | cgc.cmd[0] = GPCMD_READ_DISC_INFO; | |
380 | cgc.cmd[8] = cgc.buflen = 2; | |
381 | cgc.quiet = 1; | |
382 | ||
383 | ret = cdo->generic_packet(cdi, &cgc); | |
384 | if (ret) | |
385 | return ret; | |
386 | ||
387 | /* not all drives have the same disc_info length, so requeue | |
388 | * packet with the length the drive tells us it can supply | |
389 | */ | |
390 | buflen = be16_to_cpu(di->disc_information_length) + | |
391 | sizeof(di->disc_information_length); | |
392 | ||
393 | if (buflen > sizeof(disc_information)) | |
394 | buflen = sizeof(disc_information); | |
395 | ||
396 | cgc.cmd[8] = cgc.buflen = buflen; | |
397 | ret = cdo->generic_packet(cdi, &cgc); | |
398 | if (ret) | |
399 | return ret; | |
400 | ||
401 | /* return actual fill size */ | |
402 | return buflen; | |
403 | } | |
404 | ||
40569c61 JP |
405 | /* This macro makes sure we don't have to check on cdrom_device_ops |
406 | * existence in the run-time routines below. Change_capability is a | |
407 | * hack to have the capability flags defined const, while we can still | |
408 | * change it here without gcc complaining at every line. | |
409 | */ | |
8f94004e JA |
410 | #define ENSURE(cdo, call, bits) \ |
411 | do { \ | |
412 | if (cdo->call == NULL) \ | |
413 | WARN_ON_ONCE((cdo)->capability & (bits)); \ | |
40569c61 JP |
414 | } while (0) |
415 | ||
1da177e4 LT |
416 | /* |
417 | * the first prototypes used 0x2c as the page code for the mrw mode page, | |
418 | * subsequently this was changed to 0x03. probe the one used by this drive | |
419 | */ | |
420 | static int cdrom_mrw_probe_pc(struct cdrom_device_info *cdi) | |
421 | { | |
422 | struct packet_command cgc; | |
fce53847 | 423 | char buffer[16]; |
1da177e4 | 424 | |
fce53847 | 425 | init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_READ); |
1da177e4 LT |
426 | |
427 | cgc.timeout = HZ; | |
428 | cgc.quiet = 1; | |
429 | ||
430 | if (!cdrom_mode_sense(cdi, &cgc, MRW_MODE_PC, 0)) { | |
431 | cdi->mrw_mode_page = MRW_MODE_PC; | |
fce53847 | 432 | return 0; |
1da177e4 LT |
433 | } else if (!cdrom_mode_sense(cdi, &cgc, MRW_MODE_PC_PRE1, 0)) { |
434 | cdi->mrw_mode_page = MRW_MODE_PC_PRE1; | |
fce53847 | 435 | return 0; |
1da177e4 | 436 | } |
fce53847 FT |
437 | |
438 | return 1; | |
1da177e4 LT |
439 | } |
440 | ||
441 | static int cdrom_is_mrw(struct cdrom_device_info *cdi, int *write) | |
442 | { | |
443 | struct packet_command cgc; | |
444 | struct mrw_feature_desc *mfd; | |
fce53847 | 445 | unsigned char buffer[16]; |
1da177e4 LT |
446 | int ret; |
447 | ||
448 | *write = 0; | |
449 | ||
fce53847 | 450 | init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_READ); |
1da177e4 LT |
451 | |
452 | cgc.cmd[0] = GPCMD_GET_CONFIGURATION; | |
453 | cgc.cmd[3] = CDF_MRW; | |
fce53847 | 454 | cgc.cmd[8] = sizeof(buffer); |
1da177e4 LT |
455 | cgc.quiet = 1; |
456 | ||
457 | if ((ret = cdi->ops->generic_packet(cdi, &cgc))) | |
fce53847 | 458 | return ret; |
1da177e4 LT |
459 | |
460 | mfd = (struct mrw_feature_desc *)&buffer[sizeof(struct feature_header)]; | |
fce53847 FT |
461 | if (be16_to_cpu(mfd->feature_code) != CDF_MRW) |
462 | return 1; | |
1da177e4 LT |
463 | *write = mfd->write; |
464 | ||
465 | if ((ret = cdrom_mrw_probe_pc(cdi))) { | |
466 | *write = 0; | |
fce53847 | 467 | return ret; |
1da177e4 | 468 | } |
fce53847 FT |
469 | |
470 | return 0; | |
1da177e4 LT |
471 | } |
472 | ||
473 | static int cdrom_mrw_bgformat(struct cdrom_device_info *cdi, int cont) | |
474 | { | |
475 | struct packet_command cgc; | |
fce53847 | 476 | unsigned char buffer[12]; |
1da177e4 LT |
477 | int ret; |
478 | ||
e597cd09 | 479 | pr_info("%sstarting format\n", cont ? "Re" : ""); |
1da177e4 LT |
480 | |
481 | /* | |
482 | * FmtData bit set (bit 4), format type is 1 | |
483 | */ | |
fce53847 | 484 | init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_WRITE); |
1da177e4 LT |
485 | cgc.cmd[0] = GPCMD_FORMAT_UNIT; |
486 | cgc.cmd[1] = (1 << 4) | 1; | |
487 | ||
488 | cgc.timeout = 5 * 60 * HZ; | |
489 | ||
490 | /* | |
491 | * 4 byte format list header, 8 byte format list descriptor | |
492 | */ | |
493 | buffer[1] = 1 << 1; | |
494 | buffer[3] = 8; | |
495 | ||
496 | /* | |
497 | * nr_blocks field | |
498 | */ | |
499 | buffer[4] = 0xff; | |
500 | buffer[5] = 0xff; | |
501 | buffer[6] = 0xff; | |
502 | buffer[7] = 0xff; | |
503 | ||
504 | buffer[8] = 0x24 << 2; | |
505 | buffer[11] = cont; | |
506 | ||
507 | ret = cdi->ops->generic_packet(cdi, &cgc); | |
508 | if (ret) | |
e597cd09 | 509 | pr_info("bgformat failed\n"); |
1da177e4 LT |
510 | |
511 | return ret; | |
512 | } | |
513 | ||
514 | static int cdrom_mrw_bgformat_susp(struct cdrom_device_info *cdi, int immed) | |
515 | { | |
516 | struct packet_command cgc; | |
517 | ||
518 | init_cdrom_command(&cgc, NULL, 0, CGC_DATA_NONE); | |
519 | cgc.cmd[0] = GPCMD_CLOSE_TRACK; | |
520 | ||
521 | /* | |
522 | * Session = 1, Track = 0 | |
523 | */ | |
524 | cgc.cmd[1] = !!immed; | |
525 | cgc.cmd[2] = 1 << 1; | |
526 | ||
527 | cgc.timeout = 5 * 60 * HZ; | |
528 | ||
529 | return cdi->ops->generic_packet(cdi, &cgc); | |
530 | } | |
531 | ||
1da177e4 LT |
532 | static int cdrom_mrw_exit(struct cdrom_device_info *cdi) |
533 | { | |
534 | disc_information di; | |
535 | int ret; | |
536 | ||
537 | ret = cdrom_get_disc_info(cdi, &di); | |
538 | if (ret < 0 || ret < (int)offsetof(typeof(di),disc_type)) | |
539 | return 1; | |
540 | ||
541 | ret = 0; | |
542 | if (di.mrw_status == CDM_MRW_BGFORMAT_ACTIVE) { | |
e597cd09 | 543 | pr_info("issuing MRW background format suspend\n"); |
1da177e4 LT |
544 | ret = cdrom_mrw_bgformat_susp(cdi, 0); |
545 | } | |
546 | ||
7da21a02 | 547 | if (!ret && cdi->media_written) |
1da177e4 LT |
548 | ret = cdrom_flush_cache(cdi); |
549 | ||
550 | return ret; | |
551 | } | |
552 | ||
553 | static int cdrom_mrw_set_lba_space(struct cdrom_device_info *cdi, int space) | |
554 | { | |
555 | struct packet_command cgc; | |
556 | struct mode_page_header *mph; | |
fce53847 | 557 | char buffer[16]; |
1da177e4 LT |
558 | int ret, offset, size; |
559 | ||
fce53847 | 560 | init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_READ); |
1da177e4 | 561 | |
fce53847 FT |
562 | cgc.buffer = buffer; |
563 | cgc.buflen = sizeof(buffer); | |
1da177e4 | 564 | |
40569c61 JP |
565 | ret = cdrom_mode_sense(cdi, &cgc, cdi->mrw_mode_page, 0); |
566 | if (ret) | |
fce53847 | 567 | return ret; |
1da177e4 | 568 | |
40569c61 | 569 | mph = (struct mode_page_header *)buffer; |
1da177e4 LT |
570 | offset = be16_to_cpu(mph->desc_length); |
571 | size = be16_to_cpu(mph->mode_data_length) + 2; | |
572 | ||
573 | buffer[offset + 3] = space; | |
574 | cgc.buflen = size; | |
575 | ||
40569c61 JP |
576 | ret = cdrom_mode_select(cdi, &cgc); |
577 | if (ret) | |
fce53847 | 578 | return ret; |
1da177e4 | 579 | |
e597cd09 JP |
580 | pr_info("%s: mrw address space %s selected\n", |
581 | cdi->name, mrw_address_space[space]); | |
fce53847 | 582 | return 0; |
1da177e4 LT |
583 | } |
584 | ||
a711d91c | 585 | int register_cdrom(struct gendisk *disk, struct cdrom_device_info *cdi) |
40569c61 JP |
586 | { |
587 | static char banner_printed; | |
853fe1bf | 588 | const struct cdrom_device_ops *cdo = cdi->ops; |
40569c61 JP |
589 | |
590 | cd_dbg(CD_OPEN, "entering register_cdrom\n"); | |
591 | ||
592 | if (cdo->open == NULL || cdo->release == NULL) | |
593 | return -EINVAL; | |
594 | if (!banner_printed) { | |
595 | pr_info("Uniform CD-ROM driver " REVISION "\n"); | |
596 | banner_printed = 1; | |
597 | cdrom_sysctl_register(); | |
598 | } | |
599 | ||
a711d91c CH |
600 | cdi->disk = disk; |
601 | disk->cdi = cdi; | |
602 | ||
8f94004e | 603 | ENSURE(cdo, drive_status, CDC_DRIVE_STATUS); |
8c22eb3a | 604 | if (cdo->check_events == NULL) |
8f94004e JA |
605 | WARN_ON_ONCE(cdo->capability & (CDC_MEDIA_CHANGED | CDC_SELECT_DISC)); |
606 | ENSURE(cdo, tray_move, CDC_CLOSE_TRAY | CDC_OPEN_TRAY); | |
607 | ENSURE(cdo, lock_door, CDC_LOCK); | |
608 | ENSURE(cdo, select_speed, CDC_SELECT_SPEED); | |
609 | ENSURE(cdo, get_last_session, CDC_MULTI_SESSION); | |
610 | ENSURE(cdo, get_mcn, CDC_MCN); | |
611 | ENSURE(cdo, reset, CDC_RESET); | |
612 | ENSURE(cdo, generic_packet, CDC_GENERIC_PACKET); | |
40569c61 | 613 | cdi->mc_flags = 0; |
40569c61 | 614 | cdi->options = CDO_USE_FFLAGS; |
67f1e027 | 615 | cdi->last_media_change_ms = ktime_to_ms(ktime_get()); |
40569c61 JP |
616 | |
617 | if (autoclose == 1 && CDROM_CAN(CDC_CLOSE_TRAY)) | |
618 | cdi->options |= (int) CDO_AUTO_CLOSE; | |
619 | if (autoeject == 1 && CDROM_CAN(CDC_OPEN_TRAY)) | |
620 | cdi->options |= (int) CDO_AUTO_EJECT; | |
621 | if (lockdoor == 1) | |
622 | cdi->options |= (int) CDO_LOCK; | |
623 | if (check_media_type == 1) | |
624 | cdi->options |= (int) CDO_CHECK_TYPE; | |
625 | ||
626 | if (CDROM_CAN(CDC_MRW_W)) | |
627 | cdi->exit = cdrom_mrw_exit; | |
628 | ||
ba51bdaf | 629 | if (cdi->ops->read_cdda_bpc) |
40569c61 JP |
630 | cdi->cdda_method = CDDA_BPC_FULL; |
631 | else | |
632 | cdi->cdda_method = CDDA_OLD; | |
633 | ||
853fe1bf | 634 | WARN_ON(!cdo->generic_packet); |
40569c61 JP |
635 | |
636 | cd_dbg(CD_REG_UNREG, "drive \"/dev/%s\" registered\n", cdi->name); | |
637 | mutex_lock(&cdrom_mutex); | |
638 | list_add(&cdi->list, &cdrom_list); | |
639 | mutex_unlock(&cdrom_mutex); | |
640 | return 0; | |
641 | } | |
eeef7565 | 642 | EXPORT_SYMBOL(register_cdrom); |
40569c61 JP |
643 | #undef ENSURE |
644 | ||
645 | void unregister_cdrom(struct cdrom_device_info *cdi) | |
646 | { | |
647 | cd_dbg(CD_OPEN, "entering unregister_cdrom\n"); | |
648 | ||
649 | mutex_lock(&cdrom_mutex); | |
650 | list_del(&cdi->list); | |
651 | mutex_unlock(&cdrom_mutex); | |
652 | ||
653 | if (cdi->exit) | |
654 | cdi->exit(cdi); | |
655 | ||
40569c61 JP |
656 | cd_dbg(CD_REG_UNREG, "drive \"/dev/%s\" unregistered\n", cdi->name); |
657 | } | |
eeef7565 | 658 | EXPORT_SYMBOL(unregister_cdrom); |
40569c61 JP |
659 | |
660 | int cdrom_get_media_event(struct cdrom_device_info *cdi, | |
661 | struct media_event_desc *med) | |
662 | { | |
663 | struct packet_command cgc; | |
664 | unsigned char buffer[8]; | |
665 | struct event_header *eh = (struct event_header *)buffer; | |
666 | ||
667 | init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_READ); | |
668 | cgc.cmd[0] = GPCMD_GET_EVENT_STATUS_NOTIFICATION; | |
669 | cgc.cmd[1] = 1; /* IMMED */ | |
670 | cgc.cmd[4] = 1 << 4; /* media event */ | |
671 | cgc.cmd[8] = sizeof(buffer); | |
672 | cgc.quiet = 1; | |
673 | ||
674 | if (cdi->ops->generic_packet(cdi, &cgc)) | |
675 | return 1; | |
676 | ||
677 | if (be16_to_cpu(eh->data_len) < sizeof(*med)) | |
678 | return 1; | |
679 | ||
680 | if (eh->nea || eh->notification_class != 0x4) | |
681 | return 1; | |
682 | ||
683 | memcpy(med, &buffer[sizeof(*eh)], sizeof(*med)); | |
684 | return 0; | |
685 | } | |
eeef7565 | 686 | EXPORT_SYMBOL(cdrom_get_media_event); |
40569c61 | 687 | |
1da177e4 LT |
688 | static int cdrom_get_random_writable(struct cdrom_device_info *cdi, |
689 | struct rwrt_feature_desc *rfd) | |
690 | { | |
691 | struct packet_command cgc; | |
fce53847 | 692 | char buffer[24]; |
1da177e4 LT |
693 | int ret; |
694 | ||
fce53847 | 695 | init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_READ); |
1da177e4 LT |
696 | |
697 | cgc.cmd[0] = GPCMD_GET_CONFIGURATION; /* often 0x46 */ | |
698 | cgc.cmd[3] = CDF_RWRT; /* often 0x0020 */ | |
fce53847 | 699 | cgc.cmd[8] = sizeof(buffer); /* often 0x18 */ |
1da177e4 LT |
700 | cgc.quiet = 1; |
701 | ||
702 | if ((ret = cdi->ops->generic_packet(cdi, &cgc))) | |
fce53847 | 703 | return ret; |
1da177e4 LT |
704 | |
705 | memcpy(rfd, &buffer[sizeof(struct feature_header)], sizeof (*rfd)); | |
fce53847 | 706 | return 0; |
1da177e4 LT |
707 | } |
708 | ||
709 | static int cdrom_has_defect_mgt(struct cdrom_device_info *cdi) | |
710 | { | |
711 | struct packet_command cgc; | |
fce53847 | 712 | char buffer[16]; |
56052d52 | 713 | __be16 *feature_code; |
1da177e4 LT |
714 | int ret; |
715 | ||
fce53847 | 716 | init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_READ); |
1da177e4 LT |
717 | |
718 | cgc.cmd[0] = GPCMD_GET_CONFIGURATION; | |
719 | cgc.cmd[3] = CDF_HWDM; | |
fce53847 | 720 | cgc.cmd[8] = sizeof(buffer); |
1da177e4 LT |
721 | cgc.quiet = 1; |
722 | ||
723 | if ((ret = cdi->ops->generic_packet(cdi, &cgc))) | |
fce53847 | 724 | return ret; |
1da177e4 | 725 | |
56052d52 | 726 | feature_code = (__be16 *) &buffer[sizeof(struct feature_header)]; |
1da177e4 | 727 | if (be16_to_cpu(*feature_code) == CDF_HWDM) |
fce53847 FT |
728 | return 0; |
729 | ||
730 | return 1; | |
1da177e4 LT |
731 | } |
732 | ||
733 | ||
734 | static int cdrom_is_random_writable(struct cdrom_device_info *cdi, int *write) | |
735 | { | |
736 | struct rwrt_feature_desc rfd; | |
737 | int ret; | |
738 | ||
739 | *write = 0; | |
740 | ||
741 | if ((ret = cdrom_get_random_writable(cdi, &rfd))) | |
742 | return ret; | |
743 | ||
744 | if (CDF_RWRT == be16_to_cpu(rfd.feature_code)) | |
745 | *write = 1; | |
746 | ||
747 | return 0; | |
748 | } | |
749 | ||
750 | static int cdrom_media_erasable(struct cdrom_device_info *cdi) | |
751 | { | |
752 | disc_information di; | |
753 | int ret; | |
754 | ||
755 | ret = cdrom_get_disc_info(cdi, &di); | |
756 | if (ret < 0 || ret < offsetof(typeof(di), n_first_track)) | |
757 | return -1; | |
758 | ||
759 | return di.erasable; | |
760 | } | |
761 | ||
762 | /* | |
763 | * FIXME: check RO bit | |
764 | */ | |
765 | static int cdrom_dvdram_open_write(struct cdrom_device_info *cdi) | |
766 | { | |
767 | int ret = cdrom_media_erasable(cdi); | |
768 | ||
769 | /* | |
770 | * allow writable open if media info read worked and media is | |
771 | * erasable, _or_ if it fails since not all drives support it | |
772 | */ | |
773 | if (!ret) | |
774 | return 1; | |
775 | ||
776 | return 0; | |
777 | } | |
778 | ||
779 | static int cdrom_mrw_open_write(struct cdrom_device_info *cdi) | |
780 | { | |
781 | disc_information di; | |
782 | int ret; | |
783 | ||
784 | /* | |
785 | * always reset to DMA lba space on open | |
786 | */ | |
787 | if (cdrom_mrw_set_lba_space(cdi, MRW_LBA_DMA)) { | |
e597cd09 | 788 | pr_err("failed setting lba address space\n"); |
1da177e4 LT |
789 | return 1; |
790 | } | |
791 | ||
792 | ret = cdrom_get_disc_info(cdi, &di); | |
793 | if (ret < 0 || ret < offsetof(typeof(di),disc_type)) | |
794 | return 1; | |
795 | ||
796 | if (!di.erasable) | |
797 | return 1; | |
798 | ||
799 | /* | |
800 | * mrw_status | |
801 | * 0 - not MRW formatted | |
802 | * 1 - MRW bgformat started, but not running or complete | |
803 | * 2 - MRW bgformat in progress | |
804 | * 3 - MRW formatting complete | |
805 | */ | |
806 | ret = 0; | |
e597cd09 | 807 | pr_info("open: mrw_status '%s'\n", mrw_format_status[di.mrw_status]); |
1da177e4 LT |
808 | if (!di.mrw_status) |
809 | ret = 1; | |
810 | else if (di.mrw_status == CDM_MRW_BGFORMAT_INACTIVE && | |
811 | mrw_format_restart) | |
812 | ret = cdrom_mrw_bgformat(cdi, 1); | |
813 | ||
814 | return ret; | |
815 | } | |
816 | ||
817 | static int mo_open_write(struct cdrom_device_info *cdi) | |
818 | { | |
819 | struct packet_command cgc; | |
fce53847 | 820 | char buffer[255]; |
1da177e4 LT |
821 | int ret; |
822 | ||
fce53847 | 823 | init_cdrom_command(&cgc, &buffer, 4, CGC_DATA_READ); |
1da177e4 LT |
824 | cgc.quiet = 1; |
825 | ||
826 | /* | |
827 | * obtain write protect information as per | |
828 | * drivers/scsi/sd.c:sd_read_write_protect_flag | |
829 | */ | |
830 | ||
831 | ret = cdrom_mode_sense(cdi, &cgc, GPMODE_ALL_PAGES, 0); | |
832 | if (ret) | |
833 | ret = cdrom_mode_sense(cdi, &cgc, GPMODE_VENDOR_PAGE, 0); | |
834 | if (ret) { | |
835 | cgc.buflen = 255; | |
836 | ret = cdrom_mode_sense(cdi, &cgc, GPMODE_ALL_PAGES, 0); | |
837 | } | |
838 | ||
839 | /* drive gave us no info, let the user go ahead */ | |
fce53847 FT |
840 | if (ret) |
841 | return 0; | |
1da177e4 | 842 | |
fce53847 | 843 | return buffer[3] & 0x80; |
1da177e4 LT |
844 | } |
845 | ||
846 | static int cdrom_ram_open_write(struct cdrom_device_info *cdi) | |
847 | { | |
848 | struct rwrt_feature_desc rfd; | |
849 | int ret; | |
850 | ||
851 | if ((ret = cdrom_has_defect_mgt(cdi))) | |
852 | return ret; | |
853 | ||
854 | if ((ret = cdrom_get_random_writable(cdi, &rfd))) | |
855 | return ret; | |
856 | else if (CDF_RWRT == be16_to_cpu(rfd.feature_code)) | |
857 | ret = !rfd.curr; | |
858 | ||
5944b2ce | 859 | cd_dbg(CD_OPEN, "can open for random write\n"); |
1da177e4 LT |
860 | return ret; |
861 | } | |
862 | ||
863 | static void cdrom_mmc3_profile(struct cdrom_device_info *cdi) | |
864 | { | |
865 | struct packet_command cgc; | |
fce53847 | 866 | char buffer[32]; |
bbc3925c | 867 | int mmc3_profile; |
1da177e4 | 868 | |
fce53847 | 869 | init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_READ); |
1da177e4 LT |
870 | |
871 | cgc.cmd[0] = GPCMD_GET_CONFIGURATION; | |
872 | cgc.cmd[1] = 0; | |
873 | cgc.cmd[2] = cgc.cmd[3] = 0; /* Starting Feature Number */ | |
fce53847 | 874 | cgc.cmd[8] = sizeof(buffer); /* Allocation Length */ |
1da177e4 LT |
875 | cgc.quiet = 1; |
876 | ||
bbc3925c | 877 | if (cdi->ops->generic_packet(cdi, &cgc)) |
1da177e4 LT |
878 | mmc3_profile = 0xffff; |
879 | else | |
880 | mmc3_profile = (buffer[6] << 8) | buffer[7]; | |
881 | ||
882 | cdi->mmc3_profile = mmc3_profile; | |
883 | } | |
884 | ||
885 | static int cdrom_is_dvd_rw(struct cdrom_device_info *cdi) | |
886 | { | |
887 | switch (cdi->mmc3_profile) { | |
888 | case 0x12: /* DVD-RAM */ | |
889 | case 0x1A: /* DVD+RW */ | |
f7e7868b | 890 | case 0x43: /* BD-RE */ |
1da177e4 LT |
891 | return 0; |
892 | default: | |
893 | return 1; | |
894 | } | |
895 | } | |
896 | ||
897 | /* | |
898 | * returns 0 for ok to open write, non-0 to disallow | |
899 | */ | |
900 | static int cdrom_open_write(struct cdrom_device_info *cdi) | |
901 | { | |
902 | int mrw, mrw_write, ram_write; | |
903 | int ret = 1; | |
904 | ||
905 | mrw = 0; | |
906 | if (!cdrom_is_mrw(cdi, &mrw_write)) | |
907 | mrw = 1; | |
908 | ||
909 | if (CDROM_CAN(CDC_MO_DRIVE)) | |
910 | ram_write = 1; | |
911 | else | |
912 | (void) cdrom_is_random_writable(cdi, &ram_write); | |
913 | ||
914 | if (mrw) | |
915 | cdi->mask &= ~CDC_MRW; | |
916 | else | |
917 | cdi->mask |= CDC_MRW; | |
918 | ||
919 | if (mrw_write) | |
920 | cdi->mask &= ~CDC_MRW_W; | |
921 | else | |
922 | cdi->mask |= CDC_MRW_W; | |
923 | ||
924 | if (ram_write) | |
925 | cdi->mask &= ~CDC_RAM; | |
926 | else | |
927 | cdi->mask |= CDC_RAM; | |
928 | ||
929 | if (CDROM_CAN(CDC_MRW_W)) | |
930 | ret = cdrom_mrw_open_write(cdi); | |
931 | else if (CDROM_CAN(CDC_DVD_RAM)) | |
932 | ret = cdrom_dvdram_open_write(cdi); | |
933 | else if (CDROM_CAN(CDC_RAM) && | |
934 | !CDROM_CAN(CDC_CD_R|CDC_CD_RW|CDC_DVD|CDC_DVD_R|CDC_MRW|CDC_MO_DRIVE)) | |
935 | ret = cdrom_ram_open_write(cdi); | |
936 | else if (CDROM_CAN(CDC_MO_DRIVE)) | |
937 | ret = mo_open_write(cdi); | |
938 | else if (!cdrom_is_dvd_rw(cdi)) | |
939 | ret = 0; | |
940 | ||
941 | return ret; | |
942 | } | |
943 | ||
944 | static void cdrom_dvd_rw_close_write(struct cdrom_device_info *cdi) | |
945 | { | |
946 | struct packet_command cgc; | |
947 | ||
948 | if (cdi->mmc3_profile != 0x1a) { | |
5944b2ce | 949 | cd_dbg(CD_CLOSE, "%s: No DVD+RW\n", cdi->name); |
1da177e4 LT |
950 | return; |
951 | } | |
952 | ||
953 | if (!cdi->media_written) { | |
5944b2ce | 954 | cd_dbg(CD_CLOSE, "%s: DVD+RW media clean\n", cdi->name); |
1da177e4 LT |
955 | return; |
956 | } | |
957 | ||
e597cd09 | 958 | pr_info("%s: dirty DVD+RW media, \"finalizing\"\n", cdi->name); |
1da177e4 LT |
959 | |
960 | init_cdrom_command(&cgc, NULL, 0, CGC_DATA_NONE); | |
961 | cgc.cmd[0] = GPCMD_FLUSH_CACHE; | |
962 | cgc.timeout = 30*HZ; | |
963 | cdi->ops->generic_packet(cdi, &cgc); | |
964 | ||
965 | init_cdrom_command(&cgc, NULL, 0, CGC_DATA_NONE); | |
966 | cgc.cmd[0] = GPCMD_CLOSE_TRACK; | |
967 | cgc.timeout = 3000*HZ; | |
968 | cgc.quiet = 1; | |
969 | cdi->ops->generic_packet(cdi, &cgc); | |
970 | ||
971 | init_cdrom_command(&cgc, NULL, 0, CGC_DATA_NONE); | |
972 | cgc.cmd[0] = GPCMD_CLOSE_TRACK; | |
973 | cgc.cmd[2] = 2; /* Close session */ | |
974 | cgc.quiet = 1; | |
975 | cgc.timeout = 3000*HZ; | |
976 | cdi->ops->generic_packet(cdi, &cgc); | |
977 | ||
978 | cdi->media_written = 0; | |
979 | } | |
980 | ||
981 | static int cdrom_close_write(struct cdrom_device_info *cdi) | |
982 | { | |
983 | #if 0 | |
984 | return cdrom_flush_cache(cdi); | |
985 | #else | |
986 | return 0; | |
987 | #endif | |
988 | } | |
989 | ||
a803393b JP |
990 | /* badly broken, I know. Is due for a fixup anytime. */ |
991 | static void cdrom_count_tracks(struct cdrom_device_info *cdi, tracktype *tracks) | |
992 | { | |
993 | struct cdrom_tochdr header; | |
994 | struct cdrom_tocentry entry; | |
995 | int ret, i; | |
996 | tracks->data = 0; | |
997 | tracks->audio = 0; | |
998 | tracks->cdi = 0; | |
999 | tracks->xa = 0; | |
1000 | tracks->error = 0; | |
1001 | cd_dbg(CD_COUNT_TRACKS, "entering cdrom_count_tracks\n"); | |
366ba7c7 DEP |
1002 | |
1003 | if (!CDROM_CAN(CDC_PLAY_AUDIO)) { | |
1004 | tracks->error = CDS_NO_INFO; | |
1005 | return; | |
1006 | } | |
1007 | ||
a803393b JP |
1008 | /* Grab the TOC header so we can see how many tracks there are */ |
1009 | ret = cdi->ops->audio_ioctl(cdi, CDROMREADTOCHDR, &header); | |
1010 | if (ret) { | |
1011 | if (ret == -ENOMEDIUM) | |
1012 | tracks->error = CDS_NO_DISC; | |
1013 | else | |
1014 | tracks->error = CDS_NO_INFO; | |
1015 | return; | |
1016 | } | |
1017 | /* check what type of tracks are on this disc */ | |
1018 | entry.cdte_format = CDROM_MSF; | |
1019 | for (i = header.cdth_trk0; i <= header.cdth_trk1; i++) { | |
1020 | entry.cdte_track = i; | |
1021 | if (cdi->ops->audio_ioctl(cdi, CDROMREADTOCENTRY, &entry)) { | |
1022 | tracks->error = CDS_NO_INFO; | |
1023 | return; | |
1024 | } | |
1025 | if (entry.cdte_ctrl & CDROM_DATA_TRACK) { | |
1026 | if (entry.cdte_format == 0x10) | |
1027 | tracks->cdi++; | |
1028 | else if (entry.cdte_format == 0x20) | |
1029 | tracks->xa++; | |
1030 | else | |
1031 | tracks->data++; | |
1032 | } else { | |
1033 | tracks->audio++; | |
1034 | } | |
1035 | cd_dbg(CD_COUNT_TRACKS, "track %d: format=%d, ctrl=%d\n", | |
1036 | i, entry.cdte_format, entry.cdte_ctrl); | |
1037 | } | |
1038 | cd_dbg(CD_COUNT_TRACKS, "disc has %d tracks: %d=audio %d=data %d=Cd-I %d=XA\n", | |
1039 | header.cdth_trk1, tracks->audio, tracks->data, | |
1040 | tracks->cdi, tracks->xa); | |
1041 | } | |
1042 | ||
1da177e4 | 1043 | static |
82b91540 | 1044 | int open_for_data(struct cdrom_device_info *cdi) |
1da177e4 LT |
1045 | { |
1046 | int ret; | |
853fe1bf | 1047 | const struct cdrom_device_ops *cdo = cdi->ops; |
1da177e4 | 1048 | tracktype tracks; |
5944b2ce | 1049 | cd_dbg(CD_OPEN, "entering open_for_data\n"); |
1da177e4 LT |
1050 | /* Check if the driver can report drive status. If it can, we |
1051 | can do clever things. If it can't, well, we at least tried! */ | |
1052 | if (cdo->drive_status != NULL) { | |
1053 | ret = cdo->drive_status(cdi, CDSL_CURRENT); | |
5944b2ce | 1054 | cd_dbg(CD_OPEN, "drive_status=%d\n", ret); |
1da177e4 | 1055 | if (ret == CDS_TRAY_OPEN) { |
5944b2ce | 1056 | cd_dbg(CD_OPEN, "the tray is open...\n"); |
1da177e4 LT |
1057 | /* can/may i close it? */ |
1058 | if (CDROM_CAN(CDC_CLOSE_TRAY) && | |
1059 | cdi->options & CDO_AUTO_CLOSE) { | |
5944b2ce | 1060 | cd_dbg(CD_OPEN, "trying to close the tray\n"); |
1da177e4 LT |
1061 | ret=cdo->tray_move(cdi,0); |
1062 | if (ret) { | |
5944b2ce | 1063 | cd_dbg(CD_OPEN, "bummer. tried to close the tray but failed.\n"); |
1da177e4 LT |
1064 | /* Ignore the error from the low |
1065 | level driver. We don't care why it | |
1066 | couldn't close the tray. We only care | |
1067 | that there is no disc in the drive, | |
1068 | since that is the _REAL_ problem here.*/ | |
1069 | ret=-ENOMEDIUM; | |
1070 | goto clean_up_and_return; | |
1071 | } | |
1072 | } else { | |
5944b2ce | 1073 | cd_dbg(CD_OPEN, "bummer. this drive can't close the tray.\n"); |
1da177e4 LT |
1074 | ret=-ENOMEDIUM; |
1075 | goto clean_up_and_return; | |
1076 | } | |
1077 | /* Ok, the door should be closed now.. Check again */ | |
1078 | ret = cdo->drive_status(cdi, CDSL_CURRENT); | |
1079 | if ((ret == CDS_NO_DISC) || (ret==CDS_TRAY_OPEN)) { | |
5944b2ce JP |
1080 | cd_dbg(CD_OPEN, "bummer. the tray is still not closed.\n"); |
1081 | cd_dbg(CD_OPEN, "tray might not contain a medium\n"); | |
1da177e4 LT |
1082 | ret=-ENOMEDIUM; |
1083 | goto clean_up_and_return; | |
1084 | } | |
5944b2ce | 1085 | cd_dbg(CD_OPEN, "the tray is now closed\n"); |
1da177e4 LT |
1086 | } |
1087 | /* the door should be closed now, check for the disc */ | |
1088 | ret = cdo->drive_status(cdi, CDSL_CURRENT); | |
1089 | if (ret!=CDS_DISC_OK) { | |
1090 | ret = -ENOMEDIUM; | |
1091 | goto clean_up_and_return; | |
1092 | } | |
1093 | } | |
1094 | cdrom_count_tracks(cdi, &tracks); | |
1095 | if (tracks.error == CDS_NO_DISC) { | |
5944b2ce | 1096 | cd_dbg(CD_OPEN, "bummer. no disc.\n"); |
1da177e4 LT |
1097 | ret=-ENOMEDIUM; |
1098 | goto clean_up_and_return; | |
1099 | } | |
1100 | /* CD-Players which don't use O_NONBLOCK, workman | |
1101 | * for example, need bit CDO_CHECK_TYPE cleared! */ | |
1102 | if (tracks.data==0) { | |
1103 | if (cdi->options & CDO_CHECK_TYPE) { | |
1104 | /* give people a warning shot, now that CDO_CHECK_TYPE | |
1105 | is the default case! */ | |
5944b2ce JP |
1106 | cd_dbg(CD_OPEN, "bummer. wrong media type.\n"); |
1107 | cd_dbg(CD_WARNING, "pid %d must open device O_NONBLOCK!\n", | |
1108 | (unsigned int)task_pid_nr(current)); | |
1da177e4 LT |
1109 | ret=-EMEDIUMTYPE; |
1110 | goto clean_up_and_return; | |
1111 | } | |
1112 | else { | |
5944b2ce | 1113 | cd_dbg(CD_OPEN, "wrong media type, but CDO_CHECK_TYPE not set\n"); |
1da177e4 LT |
1114 | } |
1115 | } | |
1116 | ||
5944b2ce | 1117 | cd_dbg(CD_OPEN, "all seems well, opening the devicen"); |
1da177e4 LT |
1118 | |
1119 | /* all seems well, we can open the device */ | |
1120 | ret = cdo->open(cdi, 0); /* open for data */ | |
5944b2ce | 1121 | cd_dbg(CD_OPEN, "opening the device gave me %d\n", ret); |
1da177e4 LT |
1122 | /* After all this careful checking, we shouldn't have problems |
1123 | opening the device, but we don't want the device locked if | |
1124 | this somehow fails... */ | |
1125 | if (ret) { | |
5944b2ce | 1126 | cd_dbg(CD_OPEN, "open device failed\n"); |
1da177e4 LT |
1127 | goto clean_up_and_return; |
1128 | } | |
1129 | if (CDROM_CAN(CDC_LOCK) && (cdi->options & CDO_LOCK)) { | |
1130 | cdo->lock_door(cdi, 1); | |
5944b2ce | 1131 | cd_dbg(CD_OPEN, "door locked\n"); |
1da177e4 | 1132 | } |
5944b2ce | 1133 | cd_dbg(CD_OPEN, "device opened successfully\n"); |
1da177e4 LT |
1134 | return ret; |
1135 | ||
1136 | /* Something failed. Try to unlock the drive, because some drivers | |
1137 | (notably ide-cd) lock the drive after every command. This produced | |
1138 | a nasty bug where after mount failed, the drive would remain locked! | |
1139 | This ensures that the drive gets unlocked after a mount fails. This | |
1140 | is a goto to avoid bloating the driver with redundant code. */ | |
1141 | clean_up_and_return: | |
5944b2ce | 1142 | cd_dbg(CD_OPEN, "open failed\n"); |
1da177e4 LT |
1143 | if (CDROM_CAN(CDC_LOCK) && cdi->options & CDO_LOCK) { |
1144 | cdo->lock_door(cdi, 0); | |
5944b2ce | 1145 | cd_dbg(CD_OPEN, "door unlocked\n"); |
1da177e4 LT |
1146 | } |
1147 | return ret; | |
1148 | } | |
1149 | ||
82b91540 JP |
1150 | /* We use the open-option O_NONBLOCK to indicate that the |
1151 | * purpose of opening is only for subsequent ioctl() calls; no device | |
1152 | * integrity checks are performed. | |
1153 | * | |
1154 | * We hope that all cd-player programs will adopt this convention. It | |
1155 | * is in their own interest: device control becomes a lot easier | |
1156 | * this way. | |
1157 | */ | |
1158 | int cdrom_open(struct cdrom_device_info *cdi, struct block_device *bdev, | |
1159 | fmode_t mode) | |
1160 | { | |
1161 | int ret; | |
1162 | ||
1163 | cd_dbg(CD_OPEN, "entering cdrom_open\n"); | |
1164 | ||
82b91540 JP |
1165 | /* if this was a O_NONBLOCK open and we should honor the flags, |
1166 | * do a quick open without drive/disc integrity checks. */ | |
1167 | cdi->use_count++; | |
1168 | if ((mode & FMODE_NDELAY) && (cdi->options & CDO_USE_FFLAGS)) { | |
1169 | ret = cdi->ops->open(cdi, 1); | |
1170 | } else { | |
1171 | ret = open_for_data(cdi); | |
1172 | if (ret) | |
1173 | goto err; | |
366ba7c7 DEP |
1174 | if (CDROM_CAN(CDC_GENERIC_PACKET)) |
1175 | cdrom_mmc3_profile(cdi); | |
82b91540 JP |
1176 | if (mode & FMODE_WRITE) { |
1177 | ret = -EROFS; | |
1178 | if (cdrom_open_write(cdi)) | |
1179 | goto err_release; | |
1180 | if (!CDROM_CAN(CDC_RAM)) | |
1181 | goto err_release; | |
1182 | ret = 0; | |
1183 | cdi->media_written = 0; | |
1184 | } | |
1185 | } | |
1186 | ||
1187 | if (ret) | |
1188 | goto err; | |
1189 | ||
1190 | cd_dbg(CD_OPEN, "Use count for \"/dev/%s\" now %d\n", | |
1191 | cdi->name, cdi->use_count); | |
1192 | return 0; | |
1193 | err_release: | |
1194 | if (CDROM_CAN(CDC_LOCK) && cdi->options & CDO_LOCK) { | |
1195 | cdi->ops->lock_door(cdi, 0); | |
1196 | cd_dbg(CD_OPEN, "door unlocked\n"); | |
1197 | } | |
1198 | cdi->ops->release(cdi); | |
1199 | err: | |
1200 | cdi->use_count--; | |
1201 | return ret; | |
1202 | } | |
eeef7565 | 1203 | EXPORT_SYMBOL(cdrom_open); |
82b91540 | 1204 | |
1da177e4 LT |
1205 | /* This code is similar to that in open_for_data. The routine is called |
1206 | whenever an audio play operation is requested. | |
1207 | */ | |
853fe1bf KC |
1208 | static int check_for_audio_disc(struct cdrom_device_info *cdi, |
1209 | const struct cdrom_device_ops *cdo) | |
1da177e4 LT |
1210 | { |
1211 | int ret; | |
1212 | tracktype tracks; | |
5944b2ce | 1213 | cd_dbg(CD_OPEN, "entering check_for_audio_disc\n"); |
1da177e4 LT |
1214 | if (!(cdi->options & CDO_CHECK_TYPE)) |
1215 | return 0; | |
1216 | if (cdo->drive_status != NULL) { | |
1217 | ret = cdo->drive_status(cdi, CDSL_CURRENT); | |
5944b2ce | 1218 | cd_dbg(CD_OPEN, "drive_status=%d\n", ret); |
1da177e4 | 1219 | if (ret == CDS_TRAY_OPEN) { |
5944b2ce | 1220 | cd_dbg(CD_OPEN, "the tray is open...\n"); |
1da177e4 LT |
1221 | /* can/may i close it? */ |
1222 | if (CDROM_CAN(CDC_CLOSE_TRAY) && | |
1223 | cdi->options & CDO_AUTO_CLOSE) { | |
5944b2ce | 1224 | cd_dbg(CD_OPEN, "trying to close the tray\n"); |
1da177e4 LT |
1225 | ret=cdo->tray_move(cdi,0); |
1226 | if (ret) { | |
5944b2ce | 1227 | cd_dbg(CD_OPEN, "bummer. tried to close tray but failed.\n"); |
1da177e4 LT |
1228 | /* Ignore the error from the low |
1229 | level driver. We don't care why it | |
1230 | couldn't close the tray. We only care | |
1231 | that there is no disc in the drive, | |
1232 | since that is the _REAL_ problem here.*/ | |
1233 | return -ENOMEDIUM; | |
1234 | } | |
1235 | } else { | |
5944b2ce | 1236 | cd_dbg(CD_OPEN, "bummer. this driver can't close the tray.\n"); |
1da177e4 LT |
1237 | return -ENOMEDIUM; |
1238 | } | |
1239 | /* Ok, the door should be closed now.. Check again */ | |
1240 | ret = cdo->drive_status(cdi, CDSL_CURRENT); | |
1241 | if ((ret == CDS_NO_DISC) || (ret==CDS_TRAY_OPEN)) { | |
5944b2ce | 1242 | cd_dbg(CD_OPEN, "bummer. the tray is still not closed.\n"); |
1da177e4 LT |
1243 | return -ENOMEDIUM; |
1244 | } | |
1245 | if (ret!=CDS_DISC_OK) { | |
5944b2ce | 1246 | cd_dbg(CD_OPEN, "bummer. disc isn't ready.\n"); |
1da177e4 LT |
1247 | return -EIO; |
1248 | } | |
5944b2ce | 1249 | cd_dbg(CD_OPEN, "the tray is now closed\n"); |
1da177e4 LT |
1250 | } |
1251 | } | |
1252 | cdrom_count_tracks(cdi, &tracks); | |
1253 | if (tracks.error) | |
1254 | return(tracks.error); | |
1255 | ||
1256 | if (tracks.audio==0) | |
1257 | return -EMEDIUMTYPE; | |
1258 | ||
1259 | return 0; | |
1260 | } | |
1261 | ||
bbc1cc97 | 1262 | void cdrom_release(struct cdrom_device_info *cdi, fmode_t mode) |
1da177e4 | 1263 | { |
853fe1bf | 1264 | const struct cdrom_device_ops *cdo = cdi->ops; |
1da177e4 LT |
1265 | int opened_for_data; |
1266 | ||
5944b2ce | 1267 | cd_dbg(CD_CLOSE, "entering cdrom_release\n"); |
1da177e4 LT |
1268 | |
1269 | if (cdi->use_count > 0) | |
1270 | cdi->use_count--; | |
35841f70 BP |
1271 | |
1272 | if (cdi->use_count == 0) { | |
5944b2ce JP |
1273 | cd_dbg(CD_CLOSE, "Use count for \"/dev/%s\" now zero\n", |
1274 | cdi->name); | |
1da177e4 | 1275 | cdrom_dvd_rw_close_write(cdi); |
35841f70 | 1276 | |
cdccaa94 | 1277 | if ((cdo->capability & CDC_LOCK) && !cdi->keeplocked) { |
5944b2ce | 1278 | cd_dbg(CD_CLOSE, "Unlocking door!\n"); |
35841f70 BP |
1279 | cdo->lock_door(cdi, 0); |
1280 | } | |
1da177e4 | 1281 | } |
35841f70 | 1282 | |
1da177e4 | 1283 | opened_for_data = !(cdi->options & CDO_USE_FFLAGS) || |
bbc1cc97 | 1284 | !(mode & FMODE_NDELAY); |
1da177e4 LT |
1285 | |
1286 | /* | |
1287 | * flush cache on last write release | |
1288 | */ | |
1289 | if (CDROM_CAN(CDC_RAM) && !cdi->use_count && cdi->for_data) | |
1290 | cdrom_close_write(cdi); | |
1291 | ||
1292 | cdo->release(cdi); | |
1293 | if (cdi->use_count == 0) { /* last process that closes dev*/ | |
1294 | if (opened_for_data && | |
1295 | cdi->options & CDO_AUTO_EJECT && CDROM_CAN(CDC_OPEN_TRAY)) | |
1296 | cdo->tray_move(cdi, 1); | |
1297 | } | |
1da177e4 | 1298 | } |
eeef7565 | 1299 | EXPORT_SYMBOL(cdrom_release); |
1da177e4 LT |
1300 | |
1301 | static int cdrom_read_mech_status(struct cdrom_device_info *cdi, | |
1302 | struct cdrom_changer_info *buf) | |
1303 | { | |
1304 | struct packet_command cgc; | |
853fe1bf | 1305 | const struct cdrom_device_ops *cdo = cdi->ops; |
1da177e4 LT |
1306 | int length; |
1307 | ||
1308 | /* | |
1309 | * Sanyo changer isn't spec compliant (doesn't use regular change | |
1310 | * LOAD_UNLOAD command, and it doesn't implement the mech status | |
1311 | * command below | |
1312 | */ | |
1313 | if (cdi->sanyo_slot) { | |
1314 | buf->hdr.nslots = 3; | |
1315 | buf->hdr.curslot = cdi->sanyo_slot == 3 ? 0 : cdi->sanyo_slot; | |
1316 | for (length = 0; length < 3; length++) { | |
1317 | buf->slots[length].disc_present = 1; | |
1318 | buf->slots[length].change = 0; | |
1319 | } | |
1320 | return 0; | |
1321 | } | |
1322 | ||
1323 | length = sizeof(struct cdrom_mechstat_header) + | |
1324 | cdi->capacity * sizeof(struct cdrom_slot); | |
1325 | ||
1326 | init_cdrom_command(&cgc, buf, length, CGC_DATA_READ); | |
1327 | cgc.cmd[0] = GPCMD_MECHANISM_STATUS; | |
1328 | cgc.cmd[8] = (length >> 8) & 0xff; | |
1329 | cgc.cmd[9] = length & 0xff; | |
1330 | return cdo->generic_packet(cdi, &cgc); | |
1331 | } | |
1332 | ||
1333 | static int cdrom_slot_status(struct cdrom_device_info *cdi, int slot) | |
1334 | { | |
1335 | struct cdrom_changer_info *info; | |
1336 | int ret; | |
1337 | ||
5944b2ce | 1338 | cd_dbg(CD_CHANGER, "entering cdrom_slot_status()\n"); |
1da177e4 LT |
1339 | if (cdi->sanyo_slot) |
1340 | return CDS_NO_INFO; | |
1341 | ||
1342 | info = kmalloc(sizeof(*info), GFP_KERNEL); | |
1343 | if (!info) | |
1344 | return -ENOMEM; | |
1345 | ||
1346 | if ((ret = cdrom_read_mech_status(cdi, info))) | |
1347 | goto out_free; | |
1348 | ||
1349 | if (info->slots[slot].disc_present) | |
1350 | ret = CDS_DISC_OK; | |
1351 | else | |
1352 | ret = CDS_NO_DISC; | |
1353 | ||
1354 | out_free: | |
1355 | kfree(info); | |
1356 | return ret; | |
1357 | } | |
1358 | ||
1359 | /* Return the number of slots for an ATAPI/SCSI cdrom, | |
1360 | * return 1 if not a changer. | |
1361 | */ | |
1362 | int cdrom_number_of_slots(struct cdrom_device_info *cdi) | |
1363 | { | |
1da177e4 LT |
1364 | int nslots = 1; |
1365 | struct cdrom_changer_info *info; | |
1366 | ||
5944b2ce | 1367 | cd_dbg(CD_CHANGER, "entering cdrom_number_of_slots()\n"); |
1da177e4 LT |
1368 | /* cdrom_read_mech_status requires a valid value for capacity: */ |
1369 | cdi->capacity = 0; | |
1370 | ||
1371 | info = kmalloc(sizeof(*info), GFP_KERNEL); | |
1372 | if (!info) | |
1373 | return -ENOMEM; | |
1374 | ||
4ded53ea | 1375 | if (cdrom_read_mech_status(cdi, info) == 0) |
1da177e4 LT |
1376 | nslots = info->hdr.nslots; |
1377 | ||
1378 | kfree(info); | |
1379 | return nslots; | |
1380 | } | |
eeef7565 | 1381 | EXPORT_SYMBOL(cdrom_number_of_slots); |
1da177e4 LT |
1382 | |
1383 | ||
1384 | /* If SLOT < 0, unload the current slot. Otherwise, try to load SLOT. */ | |
1385 | static int cdrom_load_unload(struct cdrom_device_info *cdi, int slot) | |
1386 | { | |
1387 | struct packet_command cgc; | |
1388 | ||
5944b2ce | 1389 | cd_dbg(CD_CHANGER, "entering cdrom_load_unload()\n"); |
1da177e4 LT |
1390 | if (cdi->sanyo_slot && slot < 0) |
1391 | return 0; | |
1392 | ||
1393 | init_cdrom_command(&cgc, NULL, 0, CGC_DATA_NONE); | |
1394 | cgc.cmd[0] = GPCMD_LOAD_UNLOAD; | |
1395 | cgc.cmd[4] = 2 + (slot >= 0); | |
1396 | cgc.cmd[8] = slot; | |
1397 | cgc.timeout = 60 * HZ; | |
1398 | ||
1399 | /* The Sanyo 3 CD changer uses byte 7 of the | |
1400 | GPCMD_TEST_UNIT_READY to command to switch CDs instead of | |
1401 | using the GPCMD_LOAD_UNLOAD opcode. */ | |
1402 | if (cdi->sanyo_slot && -1 < slot) { | |
1403 | cgc.cmd[0] = GPCMD_TEST_UNIT_READY; | |
1404 | cgc.cmd[7] = slot; | |
1405 | cgc.cmd[4] = cgc.cmd[8] = 0; | |
1406 | cdi->sanyo_slot = slot ? slot : 3; | |
1407 | } | |
1408 | ||
1409 | return cdi->ops->generic_packet(cdi, &cgc); | |
1410 | } | |
1411 | ||
1412 | static int cdrom_select_disc(struct cdrom_device_info *cdi, int slot) | |
1413 | { | |
1414 | struct cdrom_changer_info *info; | |
1415 | int curslot; | |
1416 | int ret; | |
1417 | ||
5944b2ce | 1418 | cd_dbg(CD_CHANGER, "entering cdrom_select_disc()\n"); |
1da177e4 LT |
1419 | if (!CDROM_CAN(CDC_SELECT_DISC)) |
1420 | return -EDRIVE_CANT_DO_THIS; | |
1421 | ||
2d921729 TH |
1422 | if (cdi->ops->check_events) |
1423 | cdi->ops->check_events(cdi, 0, slot); | |
1da177e4 LT |
1424 | |
1425 | if (slot == CDSL_NONE) { | |
67f1e027 | 1426 | signal_media_change(cdi); |
1da177e4 LT |
1427 | return cdrom_load_unload(cdi, -1); |
1428 | } | |
1429 | ||
1430 | info = kmalloc(sizeof(*info), GFP_KERNEL); | |
1431 | if (!info) | |
1432 | return -ENOMEM; | |
1433 | ||
1434 | if ((ret = cdrom_read_mech_status(cdi, info))) { | |
1435 | kfree(info); | |
1436 | return ret; | |
1437 | } | |
1438 | ||
1439 | curslot = info->hdr.curslot; | |
1440 | kfree(info); | |
1441 | ||
cdccaa94 | 1442 | if (cdi->use_count > 1 || cdi->keeplocked) { |
1da177e4 LT |
1443 | if (slot == CDSL_CURRENT) { |
1444 | return curslot; | |
1445 | } else { | |
1446 | return -EBUSY; | |
1447 | } | |
1448 | } | |
1449 | ||
1450 | /* Specifying CDSL_CURRENT will attempt to load the currnet slot, | |
1451 | which is useful if it had been previously unloaded. | |
1452 | Whether it can or not, it returns the current slot. | |
1453 | Similarly, if slot happens to be the current one, we still | |
1454 | try and load it. */ | |
1455 | if (slot == CDSL_CURRENT) | |
1456 | slot = curslot; | |
1457 | ||
1458 | /* set media changed bits on both queues */ | |
67f1e027 | 1459 | signal_media_change(cdi); |
1da177e4 LT |
1460 | if ((ret = cdrom_load_unload(cdi, slot))) |
1461 | return ret; | |
1462 | ||
1463 | return slot; | |
1464 | } | |
1465 | ||
2d921729 TH |
1466 | /* |
1467 | * As cdrom implements an extra ioctl consumer for media changed | |
1468 | * event, it needs to buffer ->check_events() output, such that event | |
1469 | * is not lost for both the usual VFS and ioctl paths. | |
1470 | * cdi->{vfs|ioctl}_events are used to buffer pending events for each | |
1471 | * path. | |
1472 | * | |
1473 | * XXX: Locking is non-existent. cdi->ops->check_events() can be | |
1474 | * called in parallel and buffering fields are accessed without any | |
1475 | * exclusion. The original media_changed code had the same problem. | |
1476 | * It might be better to simply deprecate CDROM_MEDIA_CHANGED ioctl | |
1477 | * and remove this cruft altogether. It doesn't have much usefulness | |
1478 | * at this point. | |
1479 | */ | |
1480 | static void cdrom_update_events(struct cdrom_device_info *cdi, | |
1481 | unsigned int clearing) | |
1482 | { | |
1483 | unsigned int events; | |
1484 | ||
1485 | events = cdi->ops->check_events(cdi, clearing, CDSL_CURRENT); | |
1486 | cdi->vfs_events |= events; | |
1487 | cdi->ioctl_events |= events; | |
1488 | } | |
1489 | ||
1490 | unsigned int cdrom_check_events(struct cdrom_device_info *cdi, | |
1491 | unsigned int clearing) | |
1492 | { | |
1493 | unsigned int events; | |
1494 | ||
1495 | cdrom_update_events(cdi, clearing); | |
1496 | events = cdi->vfs_events; | |
1497 | cdi->vfs_events = 0; | |
1498 | return events; | |
1499 | } | |
30a7caab | 1500 | EXPORT_SYMBOL(cdrom_check_events); |
2d921729 | 1501 | |
1da177e4 LT |
1502 | /* We want to make media_changed accessible to the user through an |
1503 | * ioctl. The main problem now is that we must double-buffer the | |
1504 | * low-level implementation, to assure that the VFS and the user both | |
1505 | * see a medium change once. | |
1506 | */ | |
1507 | ||
1508 | static | |
1509 | int media_changed(struct cdrom_device_info *cdi, int queue) | |
1510 | { | |
1511 | unsigned int mask = (1 << (queue & 1)); | |
1512 | int ret = !!(cdi->mc_flags & mask); | |
2d921729 | 1513 | bool changed; |
1da177e4 LT |
1514 | |
1515 | if (!CDROM_CAN(CDC_MEDIA_CHANGED)) | |
2d921729 TH |
1516 | return ret; |
1517 | ||
1da177e4 | 1518 | /* changed since last call? */ |
8c22eb3a CH |
1519 | BUG_ON(!queue); /* shouldn't be called from VFS path */ |
1520 | cdrom_update_events(cdi, DISK_EVENT_MEDIA_CHANGE); | |
1521 | changed = cdi->ioctl_events & DISK_EVENT_MEDIA_CHANGE; | |
1522 | cdi->ioctl_events = 0; | |
2d921729 TH |
1523 | |
1524 | if (changed) { | |
67f1e027 | 1525 | signal_media_change(cdi); |
1da177e4 LT |
1526 | ret |= 1; |
1527 | cdi->media_written = 0; | |
1528 | } | |
2d921729 | 1529 | |
1da177e4 LT |
1530 | cdi->mc_flags &= ~mask; /* clear bit */ |
1531 | return ret; | |
1532 | } | |
1533 | ||
1da177e4 LT |
1534 | /* Requests to the low-level drivers will /always/ be done in the |
1535 | following format convention: | |
1536 | ||
1537 | CDROM_LBA: all data-related requests. | |
1538 | CDROM_MSF: all audio-related requests. | |
1539 | ||
1540 | However, a low-level implementation is allowed to refuse this | |
1541 | request, and return information in its own favorite format. | |
1542 | ||
1543 | It doesn't make sense /at all/ to ask for a play_audio in LBA | |
1544 | format, or ask for multi-session info in MSF format. However, for | |
1545 | backward compatibility these format requests will be satisfied, but | |
1546 | the requests to the low-level drivers will be sanitized in the more | |
1547 | meaningful format indicated above. | |
1548 | */ | |
1549 | ||
1550 | static | |
1551 | void sanitize_format(union cdrom_addr *addr, | |
1552 | u_char * curr, u_char requested) | |
1553 | { | |
1554 | if (*curr == requested) | |
1555 | return; /* nothing to be done! */ | |
1556 | if (requested == CDROM_LBA) { | |
1557 | addr->lba = (int) addr->msf.frame + | |
1558 | 75 * (addr->msf.second - 2 + 60 * addr->msf.minute); | |
1559 | } else { /* CDROM_MSF */ | |
1560 | int lba = addr->lba; | |
1561 | addr->msf.frame = lba % 75; | |
1562 | lba /= 75; | |
1563 | lba += 2; | |
1564 | addr->msf.second = lba % 60; | |
1565 | addr->msf.minute = lba / 60; | |
1566 | } | |
1567 | *curr = requested; | |
1568 | } | |
1569 | ||
1570 | void init_cdrom_command(struct packet_command *cgc, void *buf, int len, | |
1571 | int type) | |
1572 | { | |
1573 | memset(cgc, 0, sizeof(struct packet_command)); | |
1574 | if (buf) | |
1575 | memset(buf, 0, len); | |
1576 | cgc->buffer = (char *) buf; | |
1577 | cgc->buflen = len; | |
1578 | cgc->data_direction = type; | |
2e11c207 | 1579 | cgc->timeout = CDROM_DEF_TIMEOUT; |
1da177e4 | 1580 | } |
eeef7565 | 1581 | EXPORT_SYMBOL(init_cdrom_command); |
1da177e4 LT |
1582 | |
1583 | /* DVD handling */ | |
1584 | ||
1585 | #define copy_key(dest,src) memcpy((dest), (src), sizeof(dvd_key)) | |
1586 | #define copy_chal(dest,src) memcpy((dest), (src), sizeof(dvd_challenge)) | |
1587 | ||
1588 | static void setup_report_key(struct packet_command *cgc, unsigned agid, unsigned type) | |
1589 | { | |
1590 | cgc->cmd[0] = GPCMD_REPORT_KEY; | |
1591 | cgc->cmd[10] = type | (agid << 6); | |
1592 | switch (type) { | |
1593 | case 0: case 8: case 5: { | |
1594 | cgc->buflen = 8; | |
1595 | break; | |
1596 | } | |
1597 | case 1: { | |
1598 | cgc->buflen = 16; | |
1599 | break; | |
1600 | } | |
1601 | case 2: case 4: { | |
1602 | cgc->buflen = 12; | |
1603 | break; | |
1604 | } | |
1605 | } | |
1606 | cgc->cmd[9] = cgc->buflen; | |
1607 | cgc->data_direction = CGC_DATA_READ; | |
1608 | } | |
1609 | ||
1610 | static void setup_send_key(struct packet_command *cgc, unsigned agid, unsigned type) | |
1611 | { | |
1612 | cgc->cmd[0] = GPCMD_SEND_KEY; | |
1613 | cgc->cmd[10] = type | (agid << 6); | |
1614 | switch (type) { | |
1615 | case 1: { | |
1616 | cgc->buflen = 16; | |
1617 | break; | |
1618 | } | |
1619 | case 3: { | |
1620 | cgc->buflen = 12; | |
1621 | break; | |
1622 | } | |
1623 | case 6: { | |
1624 | cgc->buflen = 8; | |
1625 | break; | |
1626 | } | |
1627 | } | |
1628 | cgc->cmd[9] = cgc->buflen; | |
1629 | cgc->data_direction = CGC_DATA_WRITE; | |
1630 | } | |
1631 | ||
1632 | static int dvd_do_auth(struct cdrom_device_info *cdi, dvd_authinfo *ai) | |
1633 | { | |
1634 | int ret; | |
fce53847 | 1635 | u_char buf[20]; |
1da177e4 | 1636 | struct packet_command cgc; |
853fe1bf | 1637 | const struct cdrom_device_ops *cdo = cdi->ops; |
fce53847 | 1638 | rpc_state_t rpc_state; |
1da177e4 | 1639 | |
fce53847 | 1640 | memset(buf, 0, sizeof(buf)); |
1da177e4 LT |
1641 | init_cdrom_command(&cgc, buf, 0, CGC_DATA_READ); |
1642 | ||
1643 | switch (ai->type) { | |
1644 | /* LU data send */ | |
1645 | case DVD_LU_SEND_AGID: | |
5944b2ce | 1646 | cd_dbg(CD_DVD, "entering DVD_LU_SEND_AGID\n"); |
1da177e4 LT |
1647 | cgc.quiet = 1; |
1648 | setup_report_key(&cgc, ai->lsa.agid, 0); | |
1649 | ||
1650 | if ((ret = cdo->generic_packet(cdi, &cgc))) | |
fce53847 | 1651 | return ret; |
1da177e4 LT |
1652 | |
1653 | ai->lsa.agid = buf[7] >> 6; | |
1654 | /* Returning data, let host change state */ | |
1655 | break; | |
1656 | ||
1657 | case DVD_LU_SEND_KEY1: | |
5944b2ce | 1658 | cd_dbg(CD_DVD, "entering DVD_LU_SEND_KEY1\n"); |
1da177e4 LT |
1659 | setup_report_key(&cgc, ai->lsk.agid, 2); |
1660 | ||
1661 | if ((ret = cdo->generic_packet(cdi, &cgc))) | |
fce53847 | 1662 | return ret; |
1da177e4 LT |
1663 | |
1664 | copy_key(ai->lsk.key, &buf[4]); | |
1665 | /* Returning data, let host change state */ | |
1666 | break; | |
1667 | ||
1668 | case DVD_LU_SEND_CHALLENGE: | |
5944b2ce | 1669 | cd_dbg(CD_DVD, "entering DVD_LU_SEND_CHALLENGE\n"); |
1da177e4 LT |
1670 | setup_report_key(&cgc, ai->lsc.agid, 1); |
1671 | ||
1672 | if ((ret = cdo->generic_packet(cdi, &cgc))) | |
fce53847 | 1673 | return ret; |
1da177e4 LT |
1674 | |
1675 | copy_chal(ai->lsc.chal, &buf[4]); | |
1676 | /* Returning data, let host change state */ | |
1677 | break; | |
1678 | ||
1679 | /* Post-auth key */ | |
1680 | case DVD_LU_SEND_TITLE_KEY: | |
5944b2ce | 1681 | cd_dbg(CD_DVD, "entering DVD_LU_SEND_TITLE_KEY\n"); |
1da177e4 LT |
1682 | cgc.quiet = 1; |
1683 | setup_report_key(&cgc, ai->lstk.agid, 4); | |
1684 | cgc.cmd[5] = ai->lstk.lba; | |
1685 | cgc.cmd[4] = ai->lstk.lba >> 8; | |
1686 | cgc.cmd[3] = ai->lstk.lba >> 16; | |
1687 | cgc.cmd[2] = ai->lstk.lba >> 24; | |
1688 | ||
1689 | if ((ret = cdo->generic_packet(cdi, &cgc))) | |
fce53847 | 1690 | return ret; |
1da177e4 LT |
1691 | |
1692 | ai->lstk.cpm = (buf[4] >> 7) & 1; | |
1693 | ai->lstk.cp_sec = (buf[4] >> 6) & 1; | |
1694 | ai->lstk.cgms = (buf[4] >> 4) & 3; | |
1695 | copy_key(ai->lstk.title_key, &buf[5]); | |
1696 | /* Returning data, let host change state */ | |
1697 | break; | |
1698 | ||
1699 | case DVD_LU_SEND_ASF: | |
5944b2ce | 1700 | cd_dbg(CD_DVD, "entering DVD_LU_SEND_ASF\n"); |
1da177e4 LT |
1701 | setup_report_key(&cgc, ai->lsasf.agid, 5); |
1702 | ||
1703 | if ((ret = cdo->generic_packet(cdi, &cgc))) | |
fce53847 | 1704 | return ret; |
1da177e4 LT |
1705 | |
1706 | ai->lsasf.asf = buf[7] & 1; | |
1707 | break; | |
1708 | ||
1709 | /* LU data receive (LU changes state) */ | |
1710 | case DVD_HOST_SEND_CHALLENGE: | |
5944b2ce | 1711 | cd_dbg(CD_DVD, "entering DVD_HOST_SEND_CHALLENGE\n"); |
1da177e4 LT |
1712 | setup_send_key(&cgc, ai->hsc.agid, 1); |
1713 | buf[1] = 0xe; | |
1714 | copy_chal(&buf[4], ai->hsc.chal); | |
1715 | ||
1716 | if ((ret = cdo->generic_packet(cdi, &cgc))) | |
fce53847 | 1717 | return ret; |
1da177e4 LT |
1718 | |
1719 | ai->type = DVD_LU_SEND_KEY1; | |
1720 | break; | |
1721 | ||
1722 | case DVD_HOST_SEND_KEY2: | |
5944b2ce | 1723 | cd_dbg(CD_DVD, "entering DVD_HOST_SEND_KEY2\n"); |
1da177e4 LT |
1724 | setup_send_key(&cgc, ai->hsk.agid, 3); |
1725 | buf[1] = 0xa; | |
1726 | copy_key(&buf[4], ai->hsk.key); | |
1727 | ||
1728 | if ((ret = cdo->generic_packet(cdi, &cgc))) { | |
1729 | ai->type = DVD_AUTH_FAILURE; | |
fce53847 | 1730 | return ret; |
1da177e4 LT |
1731 | } |
1732 | ai->type = DVD_AUTH_ESTABLISHED; | |
1733 | break; | |
1734 | ||
1735 | /* Misc */ | |
1736 | case DVD_INVALIDATE_AGID: | |
1737 | cgc.quiet = 1; | |
5944b2ce | 1738 | cd_dbg(CD_DVD, "entering DVD_INVALIDATE_AGID\n"); |
1da177e4 LT |
1739 | setup_report_key(&cgc, ai->lsa.agid, 0x3f); |
1740 | if ((ret = cdo->generic_packet(cdi, &cgc))) | |
fce53847 | 1741 | return ret; |
1da177e4 LT |
1742 | break; |
1743 | ||
1744 | /* Get region settings */ | |
1745 | case DVD_LU_SEND_RPC_STATE: | |
5944b2ce | 1746 | cd_dbg(CD_DVD, "entering DVD_LU_SEND_RPC_STATE\n"); |
1da177e4 | 1747 | setup_report_key(&cgc, 0, 8); |
fce53847 FT |
1748 | memset(&rpc_state, 0, sizeof(rpc_state_t)); |
1749 | cgc.buffer = (char *) &rpc_state; | |
1da177e4 LT |
1750 | |
1751 | if ((ret = cdo->generic_packet(cdi, &cgc))) | |
fce53847 | 1752 | return ret; |
1da177e4 | 1753 | |
fce53847 FT |
1754 | ai->lrpcs.type = rpc_state.type_code; |
1755 | ai->lrpcs.vra = rpc_state.vra; | |
1756 | ai->lrpcs.ucca = rpc_state.ucca; | |
1757 | ai->lrpcs.region_mask = rpc_state.region_mask; | |
1758 | ai->lrpcs.rpc_scheme = rpc_state.rpc_scheme; | |
1da177e4 LT |
1759 | break; |
1760 | ||
1761 | /* Set region settings */ | |
1762 | case DVD_HOST_SEND_RPC_STATE: | |
5944b2ce | 1763 | cd_dbg(CD_DVD, "entering DVD_HOST_SEND_RPC_STATE\n"); |
1da177e4 LT |
1764 | setup_send_key(&cgc, 0, 6); |
1765 | buf[1] = 6; | |
1766 | buf[4] = ai->hrpcs.pdrc; | |
1767 | ||
1768 | if ((ret = cdo->generic_packet(cdi, &cgc))) | |
fce53847 | 1769 | return ret; |
1da177e4 LT |
1770 | break; |
1771 | ||
1772 | default: | |
5944b2ce | 1773 | cd_dbg(CD_WARNING, "Invalid DVD key ioctl (%d)\n", ai->type); |
fce53847 | 1774 | return -ENOTTY; |
1da177e4 | 1775 | } |
fce53847 FT |
1776 | |
1777 | return 0; | |
1da177e4 LT |
1778 | } |
1779 | ||
d194139c MS |
1780 | static int dvd_read_physical(struct cdrom_device_info *cdi, dvd_struct *s, |
1781 | struct packet_command *cgc) | |
1da177e4 | 1782 | { |
fce53847 | 1783 | unsigned char buf[21], *base; |
1da177e4 | 1784 | struct dvd_layer *layer; |
853fe1bf | 1785 | const struct cdrom_device_ops *cdo = cdi->ops; |
1da177e4 LT |
1786 | int ret, layer_num = s->physical.layer_num; |
1787 | ||
1788 | if (layer_num >= DVD_LAYERS) | |
1789 | return -EINVAL; | |
1790 | ||
d194139c MS |
1791 | init_cdrom_command(cgc, buf, sizeof(buf), CGC_DATA_READ); |
1792 | cgc->cmd[0] = GPCMD_READ_DVD_STRUCTURE; | |
1793 | cgc->cmd[6] = layer_num; | |
1794 | cgc->cmd[7] = s->type; | |
1795 | cgc->cmd[9] = cgc->buflen & 0xff; | |
1da177e4 LT |
1796 | |
1797 | /* | |
1798 | * refrain from reporting errors on non-existing layers (mainly) | |
1799 | */ | |
d194139c | 1800 | cgc->quiet = 1; |
1da177e4 | 1801 | |
d194139c MS |
1802 | ret = cdo->generic_packet(cdi, cgc); |
1803 | if (ret) | |
fce53847 | 1804 | return ret; |
1da177e4 LT |
1805 | |
1806 | base = &buf[4]; | |
1807 | layer = &s->physical.layer[layer_num]; | |
1808 | ||
1809 | /* | |
1810 | * place the data... really ugly, but at least we won't have to | |
1811 | * worry about endianess in userspace. | |
1812 | */ | |
1813 | memset(layer, 0, sizeof(*layer)); | |
1814 | layer->book_version = base[0] & 0xf; | |
1815 | layer->book_type = base[0] >> 4; | |
1816 | layer->min_rate = base[1] & 0xf; | |
1817 | layer->disc_size = base[1] >> 4; | |
1818 | layer->layer_type = base[2] & 0xf; | |
1819 | layer->track_path = (base[2] >> 4) & 1; | |
1820 | layer->nlayers = (base[2] >> 5) & 3; | |
1821 | layer->track_density = base[3] & 0xf; | |
1822 | layer->linear_density = base[3] >> 4; | |
1823 | layer->start_sector = base[5] << 16 | base[6] << 8 | base[7]; | |
1824 | layer->end_sector = base[9] << 16 | base[10] << 8 | base[11]; | |
1825 | layer->end_sector_l0 = base[13] << 16 | base[14] << 8 | base[15]; | |
1826 | layer->bca = base[16] >> 7; | |
1827 | ||
fce53847 | 1828 | return 0; |
1da177e4 LT |
1829 | } |
1830 | ||
d194139c MS |
1831 | static int dvd_read_copyright(struct cdrom_device_info *cdi, dvd_struct *s, |
1832 | struct packet_command *cgc) | |
1da177e4 LT |
1833 | { |
1834 | int ret; | |
fce53847 | 1835 | u_char buf[8]; |
853fe1bf | 1836 | const struct cdrom_device_ops *cdo = cdi->ops; |
1da177e4 | 1837 | |
d194139c MS |
1838 | init_cdrom_command(cgc, buf, sizeof(buf), CGC_DATA_READ); |
1839 | cgc->cmd[0] = GPCMD_READ_DVD_STRUCTURE; | |
1840 | cgc->cmd[6] = s->copyright.layer_num; | |
1841 | cgc->cmd[7] = s->type; | |
1842 | cgc->cmd[8] = cgc->buflen >> 8; | |
1843 | cgc->cmd[9] = cgc->buflen & 0xff; | |
1da177e4 | 1844 | |
d194139c MS |
1845 | ret = cdo->generic_packet(cdi, cgc); |
1846 | if (ret) | |
fce53847 | 1847 | return ret; |
1da177e4 LT |
1848 | |
1849 | s->copyright.cpst = buf[4]; | |
1850 | s->copyright.rmi = buf[5]; | |
1851 | ||
fce53847 | 1852 | return 0; |
1da177e4 LT |
1853 | } |
1854 | ||
d194139c MS |
1855 | static int dvd_read_disckey(struct cdrom_device_info *cdi, dvd_struct *s, |
1856 | struct packet_command *cgc) | |
1da177e4 LT |
1857 | { |
1858 | int ret, size; | |
1859 | u_char *buf; | |
853fe1bf | 1860 | const struct cdrom_device_ops *cdo = cdi->ops; |
1da177e4 LT |
1861 | |
1862 | size = sizeof(s->disckey.value) + 4; | |
1863 | ||
d194139c MS |
1864 | buf = kmalloc(size, GFP_KERNEL); |
1865 | if (!buf) | |
1da177e4 LT |
1866 | return -ENOMEM; |
1867 | ||
d194139c MS |
1868 | init_cdrom_command(cgc, buf, size, CGC_DATA_READ); |
1869 | cgc->cmd[0] = GPCMD_READ_DVD_STRUCTURE; | |
1870 | cgc->cmd[7] = s->type; | |
1871 | cgc->cmd[8] = size >> 8; | |
1872 | cgc->cmd[9] = size & 0xff; | |
1873 | cgc->cmd[10] = s->disckey.agid << 6; | |
1da177e4 | 1874 | |
d194139c MS |
1875 | ret = cdo->generic_packet(cdi, cgc); |
1876 | if (!ret) | |
1da177e4 LT |
1877 | memcpy(s->disckey.value, &buf[4], sizeof(s->disckey.value)); |
1878 | ||
1879 | kfree(buf); | |
1880 | return ret; | |
1881 | } | |
1882 | ||
d194139c MS |
1883 | static int dvd_read_bca(struct cdrom_device_info *cdi, dvd_struct *s, |
1884 | struct packet_command *cgc) | |
1da177e4 | 1885 | { |
d194139c MS |
1886 | int ret, size = 4 + 188; |
1887 | u_char *buf; | |
853fe1bf | 1888 | const struct cdrom_device_ops *cdo = cdi->ops; |
1da177e4 | 1889 | |
d194139c MS |
1890 | buf = kmalloc(size, GFP_KERNEL); |
1891 | if (!buf) | |
1892 | return -ENOMEM; | |
1da177e4 | 1893 | |
d194139c MS |
1894 | init_cdrom_command(cgc, buf, size, CGC_DATA_READ); |
1895 | cgc->cmd[0] = GPCMD_READ_DVD_STRUCTURE; | |
1896 | cgc->cmd[7] = s->type; | |
1897 | cgc->cmd[9] = cgc->buflen & 0xff; | |
1898 | ||
1899 | ret = cdo->generic_packet(cdi, cgc); | |
1900 | if (ret) | |
1901 | goto out; | |
1da177e4 LT |
1902 | |
1903 | s->bca.len = buf[0] << 8 | buf[1]; | |
1904 | if (s->bca.len < 12 || s->bca.len > 188) { | |
5944b2ce JP |
1905 | cd_dbg(CD_WARNING, "Received invalid BCA length (%d)\n", |
1906 | s->bca.len); | |
d194139c MS |
1907 | ret = -EIO; |
1908 | goto out; | |
1da177e4 LT |
1909 | } |
1910 | memcpy(s->bca.value, &buf[4], s->bca.len); | |
d194139c MS |
1911 | ret = 0; |
1912 | out: | |
1913 | kfree(buf); | |
1914 | return ret; | |
1da177e4 LT |
1915 | } |
1916 | ||
d194139c MS |
1917 | static int dvd_read_manufact(struct cdrom_device_info *cdi, dvd_struct *s, |
1918 | struct packet_command *cgc) | |
1da177e4 LT |
1919 | { |
1920 | int ret = 0, size; | |
1921 | u_char *buf; | |
853fe1bf | 1922 | const struct cdrom_device_ops *cdo = cdi->ops; |
1da177e4 LT |
1923 | |
1924 | size = sizeof(s->manufact.value) + 4; | |
1925 | ||
d194139c MS |
1926 | buf = kmalloc(size, GFP_KERNEL); |
1927 | if (!buf) | |
1da177e4 LT |
1928 | return -ENOMEM; |
1929 | ||
d194139c MS |
1930 | init_cdrom_command(cgc, buf, size, CGC_DATA_READ); |
1931 | cgc->cmd[0] = GPCMD_READ_DVD_STRUCTURE; | |
1932 | cgc->cmd[7] = s->type; | |
1933 | cgc->cmd[8] = size >> 8; | |
1934 | cgc->cmd[9] = size & 0xff; | |
1da177e4 | 1935 | |
d194139c MS |
1936 | ret = cdo->generic_packet(cdi, cgc); |
1937 | if (ret) | |
1938 | goto out; | |
1da177e4 LT |
1939 | |
1940 | s->manufact.len = buf[0] << 8 | buf[1]; | |
aec9f377 | 1941 | if (s->manufact.len < 0) { |
5944b2ce JP |
1942 | cd_dbg(CD_WARNING, "Received invalid manufacture info length (%d)\n", |
1943 | s->manufact.len); | |
1da177e4 LT |
1944 | ret = -EIO; |
1945 | } else { | |
aec9f377 | 1946 | if (s->manufact.len > 2048) { |
5944b2ce JP |
1947 | cd_dbg(CD_WARNING, "Received invalid manufacture info length (%d): truncating to 2048\n", |
1948 | s->manufact.len); | |
aec9f377 AM |
1949 | s->manufact.len = 2048; |
1950 | } | |
1da177e4 LT |
1951 | memcpy(s->manufact.value, &buf[4], s->manufact.len); |
1952 | } | |
1953 | ||
d194139c | 1954 | out: |
1da177e4 LT |
1955 | kfree(buf); |
1956 | return ret; | |
1957 | } | |
1958 | ||
d194139c MS |
1959 | static int dvd_read_struct(struct cdrom_device_info *cdi, dvd_struct *s, |
1960 | struct packet_command *cgc) | |
1da177e4 LT |
1961 | { |
1962 | switch (s->type) { | |
1963 | case DVD_STRUCT_PHYSICAL: | |
d194139c | 1964 | return dvd_read_physical(cdi, s, cgc); |
1da177e4 LT |
1965 | |
1966 | case DVD_STRUCT_COPYRIGHT: | |
d194139c | 1967 | return dvd_read_copyright(cdi, s, cgc); |
1da177e4 LT |
1968 | |
1969 | case DVD_STRUCT_DISCKEY: | |
d194139c | 1970 | return dvd_read_disckey(cdi, s, cgc); |
1da177e4 LT |
1971 | |
1972 | case DVD_STRUCT_BCA: | |
d194139c | 1973 | return dvd_read_bca(cdi, s, cgc); |
1da177e4 LT |
1974 | |
1975 | case DVD_STRUCT_MANUFACT: | |
d194139c | 1976 | return dvd_read_manufact(cdi, s, cgc); |
1da177e4 LT |
1977 | |
1978 | default: | |
5944b2ce JP |
1979 | cd_dbg(CD_WARNING, ": Invalid DVD structure read requested (%d)\n", |
1980 | s->type); | |
1da177e4 LT |
1981 | return -EINVAL; |
1982 | } | |
1983 | } | |
1984 | ||
1985 | int cdrom_mode_sense(struct cdrom_device_info *cdi, | |
1986 | struct packet_command *cgc, | |
1987 | int page_code, int page_control) | |
1988 | { | |
853fe1bf | 1989 | const struct cdrom_device_ops *cdo = cdi->ops; |
1da177e4 LT |
1990 | |
1991 | memset(cgc->cmd, 0, sizeof(cgc->cmd)); | |
1992 | ||
1993 | cgc->cmd[0] = GPCMD_MODE_SENSE_10; | |
1994 | cgc->cmd[2] = page_code | (page_control << 6); | |
1995 | cgc->cmd[7] = cgc->buflen >> 8; | |
1996 | cgc->cmd[8] = cgc->buflen & 0xff; | |
1997 | cgc->data_direction = CGC_DATA_READ; | |
1998 | return cdo->generic_packet(cdi, cgc); | |
1999 | } | |
eeef7565 | 2000 | EXPORT_SYMBOL(cdrom_mode_sense); |
1da177e4 LT |
2001 | |
2002 | int cdrom_mode_select(struct cdrom_device_info *cdi, | |
2003 | struct packet_command *cgc) | |
2004 | { | |
853fe1bf | 2005 | const struct cdrom_device_ops *cdo = cdi->ops; |
1da177e4 LT |
2006 | |
2007 | memset(cgc->cmd, 0, sizeof(cgc->cmd)); | |
2008 | memset(cgc->buffer, 0, 2); | |
2009 | cgc->cmd[0] = GPCMD_MODE_SELECT_10; | |
2010 | cgc->cmd[1] = 0x10; /* PF */ | |
2011 | cgc->cmd[7] = cgc->buflen >> 8; | |
2012 | cgc->cmd[8] = cgc->buflen & 0xff; | |
2013 | cgc->data_direction = CGC_DATA_WRITE; | |
2014 | return cdo->generic_packet(cdi, cgc); | |
2015 | } | |
eeef7565 | 2016 | EXPORT_SYMBOL(cdrom_mode_select); |
1da177e4 LT |
2017 | |
2018 | static int cdrom_read_subchannel(struct cdrom_device_info *cdi, | |
2019 | struct cdrom_subchnl *subchnl, int mcn) | |
2020 | { | |
853fe1bf | 2021 | const struct cdrom_device_ops *cdo = cdi->ops; |
1da177e4 | 2022 | struct packet_command cgc; |
fce53847 | 2023 | char buffer[32]; |
1da177e4 LT |
2024 | int ret; |
2025 | ||
2026 | init_cdrom_command(&cgc, buffer, 16, CGC_DATA_READ); | |
2027 | cgc.cmd[0] = GPCMD_READ_SUBCHANNEL; | |
bf294e83 | 2028 | cgc.cmd[1] = subchnl->cdsc_format;/* MSF or LBA addressing */ |
1da177e4 LT |
2029 | cgc.cmd[2] = 0x40; /* request subQ data */ |
2030 | cgc.cmd[3] = mcn ? 2 : 1; | |
2031 | cgc.cmd[8] = 16; | |
2032 | ||
2033 | if ((ret = cdo->generic_packet(cdi, &cgc))) | |
fce53847 | 2034 | return ret; |
1da177e4 LT |
2035 | |
2036 | subchnl->cdsc_audiostatus = cgc.buffer[1]; | |
1da177e4 LT |
2037 | subchnl->cdsc_ctrl = cgc.buffer[5] & 0xf; |
2038 | subchnl->cdsc_trk = cgc.buffer[6]; | |
2039 | subchnl->cdsc_ind = cgc.buffer[7]; | |
2040 | ||
bf294e83 | 2041 | if (subchnl->cdsc_format == CDROM_LBA) { |
2042 | subchnl->cdsc_absaddr.lba = ((cgc.buffer[8] << 24) | | |
2043 | (cgc.buffer[9] << 16) | | |
2044 | (cgc.buffer[10] << 8) | | |
2045 | (cgc.buffer[11])); | |
2046 | subchnl->cdsc_reladdr.lba = ((cgc.buffer[12] << 24) | | |
2047 | (cgc.buffer[13] << 16) | | |
2048 | (cgc.buffer[14] << 8) | | |
2049 | (cgc.buffer[15])); | |
2050 | } else { | |
2051 | subchnl->cdsc_reladdr.msf.minute = cgc.buffer[13]; | |
2052 | subchnl->cdsc_reladdr.msf.second = cgc.buffer[14]; | |
2053 | subchnl->cdsc_reladdr.msf.frame = cgc.buffer[15]; | |
2054 | subchnl->cdsc_absaddr.msf.minute = cgc.buffer[9]; | |
2055 | subchnl->cdsc_absaddr.msf.second = cgc.buffer[10]; | |
2056 | subchnl->cdsc_absaddr.msf.frame = cgc.buffer[11]; | |
2057 | } | |
1da177e4 | 2058 | |
fce53847 | 2059 | return 0; |
1da177e4 LT |
2060 | } |
2061 | ||
2062 | /* | |
2063 | * Specific READ_10 interface | |
2064 | */ | |
2065 | static int cdrom_read_cd(struct cdrom_device_info *cdi, | |
2066 | struct packet_command *cgc, int lba, | |
2067 | int blocksize, int nblocks) | |
2068 | { | |
853fe1bf | 2069 | const struct cdrom_device_ops *cdo = cdi->ops; |
1da177e4 LT |
2070 | |
2071 | memset(&cgc->cmd, 0, sizeof(cgc->cmd)); | |
2072 | cgc->cmd[0] = GPCMD_READ_10; | |
2073 | cgc->cmd[2] = (lba >> 24) & 0xff; | |
2074 | cgc->cmd[3] = (lba >> 16) & 0xff; | |
2075 | cgc->cmd[4] = (lba >> 8) & 0xff; | |
2076 | cgc->cmd[5] = lba & 0xff; | |
2077 | cgc->cmd[6] = (nblocks >> 16) & 0xff; | |
2078 | cgc->cmd[7] = (nblocks >> 8) & 0xff; | |
2079 | cgc->cmd[8] = nblocks & 0xff; | |
2080 | cgc->buflen = blocksize * nblocks; | |
2081 | return cdo->generic_packet(cdi, cgc); | |
2082 | } | |
2083 | ||
2084 | /* very generic interface for reading the various types of blocks */ | |
2085 | static int cdrom_read_block(struct cdrom_device_info *cdi, | |
2086 | struct packet_command *cgc, | |
2087 | int lba, int nblocks, int format, int blksize) | |
2088 | { | |
853fe1bf | 2089 | const struct cdrom_device_ops *cdo = cdi->ops; |
1da177e4 LT |
2090 | |
2091 | memset(&cgc->cmd, 0, sizeof(cgc->cmd)); | |
2092 | cgc->cmd[0] = GPCMD_READ_CD; | |
2093 | /* expected sector size - cdda,mode1,etc. */ | |
2094 | cgc->cmd[1] = format << 2; | |
2095 | /* starting address */ | |
2096 | cgc->cmd[2] = (lba >> 24) & 0xff; | |
2097 | cgc->cmd[3] = (lba >> 16) & 0xff; | |
2098 | cgc->cmd[4] = (lba >> 8) & 0xff; | |
2099 | cgc->cmd[5] = lba & 0xff; | |
2100 | /* number of blocks */ | |
2101 | cgc->cmd[6] = (nblocks >> 16) & 0xff; | |
2102 | cgc->cmd[7] = (nblocks >> 8) & 0xff; | |
2103 | cgc->cmd[8] = nblocks & 0xff; | |
2104 | cgc->buflen = blksize * nblocks; | |
2105 | ||
2106 | /* set the header info returned */ | |
2107 | switch (blksize) { | |
2108 | case CD_FRAMESIZE_RAW0 : cgc->cmd[9] = 0x58; break; | |
2109 | case CD_FRAMESIZE_RAW1 : cgc->cmd[9] = 0x78; break; | |
2110 | case CD_FRAMESIZE_RAW : cgc->cmd[9] = 0xf8; break; | |
2111 | default : cgc->cmd[9] = 0x10; | |
2112 | } | |
2113 | ||
2114 | return cdo->generic_packet(cdi, cgc); | |
2115 | } | |
2116 | ||
2117 | static int cdrom_read_cdda_old(struct cdrom_device_info *cdi, __u8 __user *ubuf, | |
2118 | int lba, int nframes) | |
2119 | { | |
2120 | struct packet_command cgc; | |
2121 | int ret = 0; | |
2122 | int nr; | |
2123 | ||
2124 | cdi->last_sense = 0; | |
2125 | ||
2126 | memset(&cgc, 0, sizeof(cgc)); | |
2127 | ||
2128 | /* | |
2129 | * start with will ra.nframes size, back down if alloc fails | |
2130 | */ | |
2131 | nr = nframes; | |
2132 | do { | |
6da2ec56 | 2133 | cgc.buffer = kmalloc_array(nr, CD_FRAMESIZE_RAW, GFP_KERNEL); |
1da177e4 LT |
2134 | if (cgc.buffer) |
2135 | break; | |
2136 | ||
2137 | nr >>= 1; | |
2138 | } while (nr); | |
2139 | ||
2140 | if (!nr) | |
2141 | return -ENOMEM; | |
2142 | ||
1da177e4 LT |
2143 | cgc.data_direction = CGC_DATA_READ; |
2144 | while (nframes > 0) { | |
2145 | if (nr > nframes) | |
2146 | nr = nframes; | |
2147 | ||
2148 | ret = cdrom_read_block(cdi, &cgc, lba, nr, 1, CD_FRAMESIZE_RAW); | |
2149 | if (ret) | |
2150 | break; | |
822bfa51 | 2151 | if (copy_to_user(ubuf, cgc.buffer, CD_FRAMESIZE_RAW * nr)) { |
1da177e4 LT |
2152 | ret = -EFAULT; |
2153 | break; | |
2154 | } | |
2155 | ubuf += CD_FRAMESIZE_RAW * nr; | |
2156 | nframes -= nr; | |
2157 | lba += nr; | |
2158 | } | |
1da177e4 LT |
2159 | kfree(cgc.buffer); |
2160 | return ret; | |
2161 | } | |
2162 | ||
2163 | static int cdrom_read_cdda_bpc(struct cdrom_device_info *cdi, __u8 __user *ubuf, | |
2164 | int lba, int nframes) | |
2165 | { | |
ba51bdaf CH |
2166 | int max_frames = (queue_max_sectors(cdi->disk->queue) << 9) / |
2167 | CD_FRAMESIZE_RAW; | |
1da177e4 LT |
2168 | int nr, ret = 0; |
2169 | ||
1da177e4 LT |
2170 | cdi->last_sense = 0; |
2171 | ||
2172 | while (nframes) { | |
1da177e4 LT |
2173 | if (cdi->cdda_method == CDDA_BPC_SINGLE) |
2174 | nr = 1; | |
ba51bdaf CH |
2175 | else |
2176 | nr = min(nframes, max_frames); | |
1da177e4 | 2177 | |
ba51bdaf CH |
2178 | ret = cdi->ops->read_cdda_bpc(cdi, ubuf, lba, nr, |
2179 | &cdi->last_sense); | |
1da177e4 LT |
2180 | if (ret) |
2181 | break; | |
2182 | ||
2183 | nframes -= nr; | |
2184 | lba += nr; | |
ba51bdaf | 2185 | ubuf += (nr * CD_FRAMESIZE_RAW); |
1da177e4 LT |
2186 | } |
2187 | ||
2188 | return ret; | |
2189 | } | |
2190 | ||
2191 | static int cdrom_read_cdda(struct cdrom_device_info *cdi, __u8 __user *ubuf, | |
2192 | int lba, int nframes) | |
2193 | { | |
2194 | int ret; | |
2195 | ||
2196 | if (cdi->cdda_method == CDDA_OLD) | |
2197 | return cdrom_read_cdda_old(cdi, ubuf, lba, nframes); | |
2198 | ||
2199 | retry: | |
2200 | /* | |
2201 | * for anything else than success and io error, we need to retry | |
2202 | */ | |
2203 | ret = cdrom_read_cdda_bpc(cdi, ubuf, lba, nframes); | |
2204 | if (!ret || ret != -EIO) | |
2205 | return ret; | |
2206 | ||
2207 | /* | |
2208 | * I've seen drives get sense 4/8/3 udma crc errors on multi | |
2209 | * frame dma, so drop to single frame dma if we need to | |
2210 | */ | |
2211 | if (cdi->cdda_method == CDDA_BPC_FULL && nframes > 1) { | |
e597cd09 | 2212 | pr_info("dropping to single frame dma\n"); |
1da177e4 LT |
2213 | cdi->cdda_method = CDDA_BPC_SINGLE; |
2214 | goto retry; | |
2215 | } | |
2216 | ||
2217 | /* | |
2218 | * so we have an io error of some sort with multi frame dma. if the | |
2219 | * condition wasn't a hardware error | |
2220 | * problems, not for any error | |
2221 | */ | |
2222 | if (cdi->last_sense != 0x04 && cdi->last_sense != 0x0b) | |
2223 | return ret; | |
2224 | ||
e597cd09 | 2225 | pr_info("dropping to old style cdda (sense=%x)\n", cdi->last_sense); |
1da177e4 LT |
2226 | cdi->cdda_method = CDDA_OLD; |
2227 | return cdrom_read_cdda_old(cdi, ubuf, lba, nframes); | |
2228 | } | |
2229 | ||
eaf8e3e4 CH |
2230 | int cdrom_multisession(struct cdrom_device_info *cdi, |
2231 | struct cdrom_multisession *info) | |
1da177e4 | 2232 | { |
d2c5d4fc | 2233 | u8 requested_format; |
1da177e4 LT |
2234 | int ret; |
2235 | ||
d2c5d4fc CH |
2236 | if (!(cdi->ops->capability & CDC_MULTI_SESSION)) |
2237 | return -ENOSYS; | |
2238 | ||
eaf8e3e4 | 2239 | requested_format = info->addr_format; |
d2c5d4fc CH |
2240 | if (requested_format != CDROM_MSF && requested_format != CDROM_LBA) |
2241 | return -EINVAL; | |
eaf8e3e4 | 2242 | info->addr_format = CDROM_LBA; |
d2c5d4fc | 2243 | |
eaf8e3e4 CH |
2244 | ret = cdi->ops->get_last_session(cdi, info); |
2245 | if (!ret) | |
2246 | sanitize_format(&info->addr, &info->addr_format, | |
2247 | requested_format); | |
2248 | return ret; | |
2249 | } | |
2250 | EXPORT_SYMBOL_GPL(cdrom_multisession); | |
1da177e4 | 2251 | |
eaf8e3e4 CH |
2252 | static int cdrom_ioctl_multisession(struct cdrom_device_info *cdi, |
2253 | void __user *argp) | |
2254 | { | |
2255 | struct cdrom_multisession info; | |
2256 | int ret; | |
2257 | ||
2258 | cd_dbg(CD_DO_IOCTL, "entering CDROMMULTISESSION\n"); | |
d2c5d4fc | 2259 | |
eaf8e3e4 CH |
2260 | if (copy_from_user(&info, argp, sizeof(info))) |
2261 | return -EFAULT; | |
2262 | ret = cdrom_multisession(cdi, &info); | |
2263 | if (ret) | |
2264 | return ret; | |
2265 | if (copy_to_user(argp, &info, sizeof(info))) | |
d2c5d4fc CH |
2266 | return -EFAULT; |
2267 | ||
5944b2ce | 2268 | cd_dbg(CD_DO_IOCTL, "CDROMMULTISESSION successful\n"); |
eaf8e3e4 | 2269 | return ret; |
d2c5d4fc CH |
2270 | } |
2271 | ||
2272 | static int cdrom_ioctl_eject(struct cdrom_device_info *cdi) | |
2273 | { | |
5944b2ce | 2274 | cd_dbg(CD_DO_IOCTL, "entering CDROMEJECT\n"); |
d2c5d4fc CH |
2275 | |
2276 | if (!CDROM_CAN(CDC_OPEN_TRAY)) | |
2277 | return -ENOSYS; | |
cdccaa94 | 2278 | if (cdi->use_count != 1 || cdi->keeplocked) |
d2c5d4fc CH |
2279 | return -EBUSY; |
2280 | if (CDROM_CAN(CDC_LOCK)) { | |
2281 | int ret = cdi->ops->lock_door(cdi, 0); | |
2282 | if (ret) | |
1da177e4 | 2283 | return ret; |
d2c5d4fc | 2284 | } |
1da177e4 | 2285 | |
d2c5d4fc CH |
2286 | return cdi->ops->tray_move(cdi, 1); |
2287 | } | |
1da177e4 | 2288 | |
d2c5d4fc CH |
2289 | static int cdrom_ioctl_closetray(struct cdrom_device_info *cdi) |
2290 | { | |
5944b2ce | 2291 | cd_dbg(CD_DO_IOCTL, "entering CDROMCLOSETRAY\n"); |
1da177e4 | 2292 | |
d2c5d4fc CH |
2293 | if (!CDROM_CAN(CDC_CLOSE_TRAY)) |
2294 | return -ENOSYS; | |
2295 | return cdi->ops->tray_move(cdi, 0); | |
2296 | } | |
1da177e4 | 2297 | |
d2c5d4fc CH |
2298 | static int cdrom_ioctl_eject_sw(struct cdrom_device_info *cdi, |
2299 | unsigned long arg) | |
2300 | { | |
5944b2ce | 2301 | cd_dbg(CD_DO_IOCTL, "entering CDROMEJECT_SW\n"); |
1da177e4 | 2302 | |
d2c5d4fc CH |
2303 | if (!CDROM_CAN(CDC_OPEN_TRAY)) |
2304 | return -ENOSYS; | |
cdccaa94 | 2305 | if (cdi->keeplocked) |
d2c5d4fc | 2306 | return -EBUSY; |
1da177e4 | 2307 | |
d2c5d4fc CH |
2308 | cdi->options &= ~(CDO_AUTO_CLOSE | CDO_AUTO_EJECT); |
2309 | if (arg) | |
2310 | cdi->options |= CDO_AUTO_CLOSE | CDO_AUTO_EJECT; | |
2311 | return 0; | |
2312 | } | |
1da177e4 | 2313 | |
d2c5d4fc CH |
2314 | static int cdrom_ioctl_media_changed(struct cdrom_device_info *cdi, |
2315 | unsigned long arg) | |
2316 | { | |
2317 | struct cdrom_changer_info *info; | |
2318 | int ret; | |
1da177e4 | 2319 | |
5944b2ce | 2320 | cd_dbg(CD_DO_IOCTL, "entering CDROM_MEDIA_CHANGED\n"); |
1da177e4 | 2321 | |
d2c5d4fc CH |
2322 | if (!CDROM_CAN(CDC_MEDIA_CHANGED)) |
2323 | return -ENOSYS; | |
1da177e4 | 2324 | |
d2c5d4fc CH |
2325 | /* cannot select disc or select current disc */ |
2326 | if (!CDROM_CAN(CDC_SELECT_DISC) || arg == CDSL_CURRENT) | |
2327 | return media_changed(cdi, 1); | |
1da177e4 | 2328 | |
9de4ee40 | 2329 | if (arg >= cdi->capacity) |
d2c5d4fc | 2330 | return -EINVAL; |
1da177e4 | 2331 | |
d2c5d4fc CH |
2332 | info = kmalloc(sizeof(*info), GFP_KERNEL); |
2333 | if (!info) | |
2334 | return -ENOMEM; | |
1da177e4 | 2335 | |
d2c5d4fc CH |
2336 | ret = cdrom_read_mech_status(cdi, info); |
2337 | if (!ret) | |
2338 | ret = info->slots[arg].change; | |
2339 | kfree(info); | |
2340 | return ret; | |
2341 | } | |
1da177e4 | 2342 | |
67f1e027 LP |
2343 | /* |
2344 | * Media change detection with timing information. | |
2345 | * | |
2346 | * arg is a pointer to a cdrom_timed_media_change_info struct. | |
2347 | * arg->last_media_change may be set by calling code to signal | |
2348 | * the timestamp (in ms) of the last known media change (by the caller). | |
2349 | * Upon successful return, ioctl call will set arg->last_media_change | |
2350 | * to the latest media change timestamp known by the kernel/driver | |
2351 | * and set arg->has_changed to 1 if that timestamp is more recent | |
2352 | * than the timestamp set by the caller. | |
2353 | */ | |
2354 | static int cdrom_ioctl_timed_media_change(struct cdrom_device_info *cdi, | |
2355 | unsigned long arg) | |
2356 | { | |
2357 | int ret; | |
2358 | struct cdrom_timed_media_change_info __user *info; | |
2359 | struct cdrom_timed_media_change_info tmp_info; | |
2360 | ||
2361 | if (!CDROM_CAN(CDC_MEDIA_CHANGED)) | |
2362 | return -ENOSYS; | |
2363 | ||
2364 | info = (struct cdrom_timed_media_change_info __user *)arg; | |
2365 | cd_dbg(CD_DO_IOCTL, "entering CDROM_TIMED_MEDIA_CHANGE\n"); | |
2366 | ||
2367 | ret = cdrom_ioctl_media_changed(cdi, CDSL_CURRENT); | |
2368 | if (ret < 0) | |
2369 | return ret; | |
2370 | ||
2371 | if (copy_from_user(&tmp_info, info, sizeof(tmp_info)) != 0) | |
2372 | return -EFAULT; | |
2373 | ||
2374 | tmp_info.media_flags = 0; | |
2375 | if (tmp_info.last_media_change - cdi->last_media_change_ms < 0) | |
2376 | tmp_info.media_flags |= MEDIA_CHANGED_FLAG; | |
2377 | ||
2378 | tmp_info.last_media_change = cdi->last_media_change_ms; | |
2379 | ||
2380 | if (copy_to_user(info, &tmp_info, sizeof(*info)) != 0) | |
2381 | return -EFAULT; | |
2382 | ||
2383 | return 0; | |
2384 | } | |
2385 | ||
d2c5d4fc CH |
2386 | static int cdrom_ioctl_set_options(struct cdrom_device_info *cdi, |
2387 | unsigned long arg) | |
2388 | { | |
5944b2ce | 2389 | cd_dbg(CD_DO_IOCTL, "entering CDROM_SET_OPTIONS\n"); |
1da177e4 | 2390 | |
d2c5d4fc CH |
2391 | /* |
2392 | * Options need to be in sync with capability. | |
2393 | * Too late for that, so we have to check each one separately. | |
2394 | */ | |
2395 | switch (arg) { | |
2396 | case CDO_USE_FFLAGS: | |
2397 | case CDO_CHECK_TYPE: | |
2398 | break; | |
2399 | case CDO_LOCK: | |
2400 | if (!CDROM_CAN(CDC_LOCK)) | |
2401 | return -ENOSYS; | |
2402 | break; | |
2403 | case 0: | |
2404 | return cdi->options; | |
2405 | /* default is basically CDO_[AUTO_CLOSE|AUTO_EJECT] */ | |
2406 | default: | |
2407 | if (!CDROM_CAN(arg)) | |
1da177e4 | 2408 | return -ENOSYS; |
d2c5d4fc CH |
2409 | } |
2410 | cdi->options |= (int) arg; | |
2411 | return cdi->options; | |
2412 | } | |
1da177e4 | 2413 | |
d2c5d4fc CH |
2414 | static int cdrom_ioctl_clear_options(struct cdrom_device_info *cdi, |
2415 | unsigned long arg) | |
2416 | { | |
5944b2ce | 2417 | cd_dbg(CD_DO_IOCTL, "entering CDROM_CLEAR_OPTIONS\n"); |
1da177e4 | 2418 | |
d2c5d4fc CH |
2419 | cdi->options &= ~(int) arg; |
2420 | return cdi->options; | |
2421 | } | |
1da177e4 | 2422 | |
d2c5d4fc CH |
2423 | static int cdrom_ioctl_select_speed(struct cdrom_device_info *cdi, |
2424 | unsigned long arg) | |
2425 | { | |
5944b2ce | 2426 | cd_dbg(CD_DO_IOCTL, "entering CDROM_SELECT_SPEED\n"); |
1da177e4 | 2427 | |
d2c5d4fc CH |
2428 | if (!CDROM_CAN(CDC_SELECT_SPEED)) |
2429 | return -ENOSYS; | |
2430 | return cdi->ops->select_speed(cdi, arg); | |
2431 | } | |
1da177e4 | 2432 | |
d2c5d4fc CH |
2433 | static int cdrom_ioctl_select_disc(struct cdrom_device_info *cdi, |
2434 | unsigned long arg) | |
2435 | { | |
5944b2ce | 2436 | cd_dbg(CD_DO_IOCTL, "entering CDROM_SELECT_DISC\n"); |
d2c5d4fc CH |
2437 | |
2438 | if (!CDROM_CAN(CDC_SELECT_DISC)) | |
2439 | return -ENOSYS; | |
2440 | ||
2441 | if (arg != CDSL_CURRENT && arg != CDSL_NONE) { | |
e4f3aa2e | 2442 | if (arg >= cdi->capacity) |
d2c5d4fc CH |
2443 | return -EINVAL; |
2444 | } | |
2445 | ||
5944b2ce | 2446 | cd_dbg(CD_CHANGER, "Using generic cdrom_select_disc()\n"); |
d2c5d4fc CH |
2447 | return cdrom_select_disc(cdi, arg); |
2448 | } | |
2449 | ||
2450 | static int cdrom_ioctl_reset(struct cdrom_device_info *cdi, | |
2451 | struct block_device *bdev) | |
2452 | { | |
5944b2ce | 2453 | cd_dbg(CD_DO_IOCTL, "entering CDROM_RESET\n"); |
d2c5d4fc CH |
2454 | |
2455 | if (!capable(CAP_SYS_ADMIN)) | |
2456 | return -EACCES; | |
2457 | if (!CDROM_CAN(CDC_RESET)) | |
2458 | return -ENOSYS; | |
f98393a6 | 2459 | invalidate_bdev(bdev); |
d2c5d4fc CH |
2460 | return cdi->ops->reset(cdi); |
2461 | } | |
2462 | ||
2463 | static int cdrom_ioctl_lock_door(struct cdrom_device_info *cdi, | |
2464 | unsigned long arg) | |
2465 | { | |
5944b2ce | 2466 | cd_dbg(CD_DO_IOCTL, "%socking door\n", arg ? "L" : "Unl"); |
d2c5d4fc CH |
2467 | |
2468 | if (!CDROM_CAN(CDC_LOCK)) | |
2469 | return -EDRIVE_CANT_DO_THIS; | |
2470 | ||
cdccaa94 | 2471 | cdi->keeplocked = arg ? 1 : 0; |
d2c5d4fc CH |
2472 | |
2473 | /* | |
2474 | * Don't unlock the door on multiple opens by default, but allow | |
2475 | * root to do so. | |
2476 | */ | |
2477 | if (cdi->use_count != 1 && !arg && !capable(CAP_SYS_ADMIN)) | |
2478 | return -EBUSY; | |
2479 | return cdi->ops->lock_door(cdi, arg); | |
2480 | } | |
2481 | ||
2482 | static int cdrom_ioctl_debug(struct cdrom_device_info *cdi, | |
2483 | unsigned long arg) | |
2484 | { | |
5944b2ce | 2485 | cd_dbg(CD_DO_IOCTL, "%sabling debug\n", arg ? "En" : "Dis"); |
d2c5d4fc CH |
2486 | |
2487 | if (!capable(CAP_SYS_ADMIN)) | |
2488 | return -EACCES; | |
2489 | debug = arg ? 1 : 0; | |
2490 | return debug; | |
2491 | } | |
1da177e4 | 2492 | |
d2c5d4fc CH |
2493 | static int cdrom_ioctl_get_capability(struct cdrom_device_info *cdi) |
2494 | { | |
5944b2ce | 2495 | cd_dbg(CD_DO_IOCTL, "entering CDROM_GET_CAPABILITY\n"); |
d2c5d4fc CH |
2496 | return (cdi->ops->capability & ~cdi->mask); |
2497 | } | |
2498 | ||
2499 | /* | |
2500 | * The following function is implemented, although very few audio | |
1da177e4 LT |
2501 | * discs give Universal Product Code information, which should just be |
2502 | * the Medium Catalog Number on the box. Note, that the way the code | |
2503 | * is written on the CD is /not/ uniform across all discs! | |
2504 | */ | |
d2c5d4fc CH |
2505 | static int cdrom_ioctl_get_mcn(struct cdrom_device_info *cdi, |
2506 | void __user *argp) | |
2507 | { | |
2508 | struct cdrom_mcn mcn; | |
2509 | int ret; | |
1da177e4 | 2510 | |
5944b2ce | 2511 | cd_dbg(CD_DO_IOCTL, "entering CDROM_GET_MCN\n"); |
1da177e4 | 2512 | |
d2c5d4fc CH |
2513 | if (!(cdi->ops->capability & CDC_MCN)) |
2514 | return -ENOSYS; | |
2515 | ret = cdi->ops->get_mcn(cdi, &mcn); | |
2516 | if (ret) | |
2517 | return ret; | |
1da177e4 | 2518 | |
d2c5d4fc CH |
2519 | if (copy_to_user(argp, &mcn, sizeof(mcn))) |
2520 | return -EFAULT; | |
5944b2ce | 2521 | cd_dbg(CD_DO_IOCTL, "CDROM_GET_MCN successful\n"); |
d2c5d4fc CH |
2522 | return 0; |
2523 | } | |
1da177e4 | 2524 | |
d2c5d4fc CH |
2525 | static int cdrom_ioctl_drive_status(struct cdrom_device_info *cdi, |
2526 | unsigned long arg) | |
2527 | { | |
5944b2ce | 2528 | cd_dbg(CD_DO_IOCTL, "entering CDROM_DRIVE_STATUS\n"); |
d2c5d4fc CH |
2529 | |
2530 | if (!(cdi->ops->capability & CDC_DRIVE_STATUS)) | |
2531 | return -ENOSYS; | |
2532 | if (!CDROM_CAN(CDC_SELECT_DISC) || | |
2533 | (arg == CDSL_CURRENT || arg == CDSL_NONE)) | |
2534 | return cdi->ops->drive_status(cdi, CDSL_CURRENT); | |
8f3fafc9 | 2535 | if (arg >= cdi->capacity) |
d2c5d4fc CH |
2536 | return -EINVAL; |
2537 | return cdrom_slot_status(cdi, arg); | |
2538 | } | |
2539 | ||
2540 | /* | |
2541 | * Ok, this is where problems start. The current interface for the | |
2542 | * CDROM_DISC_STATUS ioctl is flawed. It makes the false assumption that | |
25985edc | 2543 | * CDs are all CDS_DATA_1 or all CDS_AUDIO, etc. Unfortunately, while this |
d2c5d4fc CH |
2544 | * is often the case, it is also very common for CDs to have some tracks |
2545 | * with data, and some tracks with audio. Just because I feel like it, | |
2546 | * I declare the following to be the best way to cope. If the CD has ANY | |
2547 | * data tracks on it, it will be returned as a data CD. If it has any XA | |
2548 | * tracks, I will return it as that. Now I could simplify this interface | |
2549 | * by combining these returns with the above, but this more clearly | |
2550 | * demonstrates the problem with the current interface. Too bad this | |
2551 | * wasn't designed to use bitmasks... -Erik | |
2552 | * | |
2553 | * Well, now we have the option CDS_MIXED: a mixed-type CD. | |
2554 | * User level programmers might feel the ioctl is not very useful. | |
2555 | * ---david | |
2556 | */ | |
2557 | static int cdrom_ioctl_disc_status(struct cdrom_device_info *cdi) | |
2558 | { | |
2559 | tracktype tracks; | |
2560 | ||
5944b2ce | 2561 | cd_dbg(CD_DO_IOCTL, "entering CDROM_DISC_STATUS\n"); |
d2c5d4fc CH |
2562 | |
2563 | cdrom_count_tracks(cdi, &tracks); | |
2564 | if (tracks.error) | |
2565 | return tracks.error; | |
2566 | ||
2567 | /* Policy mode on */ | |
2568 | if (tracks.audio > 0) { | |
2569 | if (!tracks.data && !tracks.cdi && !tracks.xa) | |
2570 | return CDS_AUDIO; | |
2571 | else | |
2572 | return CDS_MIXED; | |
1da177e4 LT |
2573 | } |
2574 | ||
d2c5d4fc CH |
2575 | if (tracks.cdi > 0) |
2576 | return CDS_XA_2_2; | |
2577 | if (tracks.xa > 0) | |
2578 | return CDS_XA_2_1; | |
2579 | if (tracks.data > 0) | |
2580 | return CDS_DATA_1; | |
2581 | /* Policy mode off */ | |
2582 | ||
5944b2ce | 2583 | cd_dbg(CD_WARNING, "This disc doesn't have any tracks I recognize!\n"); |
d2c5d4fc CH |
2584 | return CDS_NO_INFO; |
2585 | } | |
2586 | ||
2587 | static int cdrom_ioctl_changer_nslots(struct cdrom_device_info *cdi) | |
2588 | { | |
5944b2ce | 2589 | cd_dbg(CD_DO_IOCTL, "entering CDROM_CHANGER_NSLOTS\n"); |
d2c5d4fc CH |
2590 | return cdi->capacity; |
2591 | } | |
2592 | ||
2593 | static int cdrom_ioctl_get_subchnl(struct cdrom_device_info *cdi, | |
2594 | void __user *argp) | |
2595 | { | |
2596 | struct cdrom_subchnl q; | |
2597 | u8 requested, back; | |
2598 | int ret; | |
2599 | ||
5944b2ce | 2600 | /* cd_dbg(CD_DO_IOCTL,"entering CDROMSUBCHNL\n");*/ |
d2c5d4fc | 2601 | |
d2c5d4fc CH |
2602 | if (copy_from_user(&q, argp, sizeof(q))) |
2603 | return -EFAULT; | |
2604 | ||
2605 | requested = q.cdsc_format; | |
2606 | if (requested != CDROM_MSF && requested != CDROM_LBA) | |
2607 | return -EINVAL; | |
2608 | q.cdsc_format = CDROM_MSF; | |
2609 | ||
2610 | ret = cdi->ops->audio_ioctl(cdi, CDROMSUBCHNL, &q); | |
2611 | if (ret) | |
2612 | return ret; | |
2613 | ||
2614 | back = q.cdsc_format; /* local copy */ | |
2615 | sanitize_format(&q.cdsc_absaddr, &back, requested); | |
2616 | sanitize_format(&q.cdsc_reladdr, &q.cdsc_format, requested); | |
2617 | ||
2618 | if (copy_to_user(argp, &q, sizeof(q))) | |
2619 | return -EFAULT; | |
5944b2ce | 2620 | /* cd_dbg(CD_DO_IOCTL, "CDROMSUBCHNL successful\n"); */ |
d2c5d4fc CH |
2621 | return 0; |
2622 | } | |
2623 | ||
2624 | static int cdrom_ioctl_read_tochdr(struct cdrom_device_info *cdi, | |
2625 | void __user *argp) | |
2626 | { | |
2627 | struct cdrom_tochdr header; | |
2628 | int ret; | |
2629 | ||
5944b2ce | 2630 | /* cd_dbg(CD_DO_IOCTL, "entering CDROMREADTOCHDR\n"); */ |
d2c5d4fc | 2631 | |
d2c5d4fc CH |
2632 | if (copy_from_user(&header, argp, sizeof(header))) |
2633 | return -EFAULT; | |
2634 | ||
2635 | ret = cdi->ops->audio_ioctl(cdi, CDROMREADTOCHDR, &header); | |
2636 | if (ret) | |
2637 | return ret; | |
2638 | ||
2639 | if (copy_to_user(argp, &header, sizeof(header))) | |
2640 | return -EFAULT; | |
5944b2ce | 2641 | /* cd_dbg(CD_DO_IOCTL, "CDROMREADTOCHDR successful\n"); */ |
d2c5d4fc CH |
2642 | return 0; |
2643 | } | |
2644 | ||
4c3cfcce CH |
2645 | int cdrom_read_tocentry(struct cdrom_device_info *cdi, |
2646 | struct cdrom_tocentry *entry) | |
2647 | { | |
2648 | u8 requested_format = entry->cdte_format; | |
2649 | int ret; | |
2650 | ||
2651 | if (requested_format != CDROM_MSF && requested_format != CDROM_LBA) | |
2652 | return -EINVAL; | |
2653 | ||
2654 | /* make interface to low-level uniform */ | |
2655 | entry->cdte_format = CDROM_MSF; | |
2656 | ret = cdi->ops->audio_ioctl(cdi, CDROMREADTOCENTRY, entry); | |
2657 | if (!ret) | |
2658 | sanitize_format(&entry->cdte_addr, &entry->cdte_format, | |
2659 | requested_format); | |
2660 | return ret; | |
2661 | } | |
2662 | EXPORT_SYMBOL_GPL(cdrom_read_tocentry); | |
2663 | ||
d2c5d4fc CH |
2664 | static int cdrom_ioctl_read_tocentry(struct cdrom_device_info *cdi, |
2665 | void __user *argp) | |
2666 | { | |
2667 | struct cdrom_tocentry entry; | |
d2c5d4fc CH |
2668 | int ret; |
2669 | ||
d2c5d4fc CH |
2670 | if (copy_from_user(&entry, argp, sizeof(entry))) |
2671 | return -EFAULT; | |
4c3cfcce CH |
2672 | ret = cdrom_read_tocentry(cdi, &entry); |
2673 | if (!ret && copy_to_user(argp, &entry, sizeof(entry))) | |
d2c5d4fc | 2674 | return -EFAULT; |
4c3cfcce | 2675 | return ret; |
d2c5d4fc CH |
2676 | } |
2677 | ||
2678 | static int cdrom_ioctl_play_msf(struct cdrom_device_info *cdi, | |
2679 | void __user *argp) | |
2680 | { | |
2681 | struct cdrom_msf msf; | |
2682 | ||
5944b2ce | 2683 | cd_dbg(CD_DO_IOCTL, "entering CDROMPLAYMSF\n"); |
d2c5d4fc CH |
2684 | |
2685 | if (!CDROM_CAN(CDC_PLAY_AUDIO)) | |
2686 | return -ENOSYS; | |
2687 | if (copy_from_user(&msf, argp, sizeof(msf))) | |
2688 | return -EFAULT; | |
2689 | return cdi->ops->audio_ioctl(cdi, CDROMPLAYMSF, &msf); | |
2690 | } | |
2691 | ||
2692 | static int cdrom_ioctl_play_trkind(struct cdrom_device_info *cdi, | |
2693 | void __user *argp) | |
2694 | { | |
2695 | struct cdrom_ti ti; | |
2696 | int ret; | |
2697 | ||
5944b2ce | 2698 | cd_dbg(CD_DO_IOCTL, "entering CDROMPLAYTRKIND\n"); |
d2c5d4fc CH |
2699 | |
2700 | if (!CDROM_CAN(CDC_PLAY_AUDIO)) | |
2701 | return -ENOSYS; | |
2702 | if (copy_from_user(&ti, argp, sizeof(ti))) | |
2703 | return -EFAULT; | |
2704 | ||
2705 | ret = check_for_audio_disc(cdi, cdi->ops); | |
2706 | if (ret) | |
2707 | return ret; | |
2708 | return cdi->ops->audio_ioctl(cdi, CDROMPLAYTRKIND, &ti); | |
2709 | } | |
2710 | static int cdrom_ioctl_volctrl(struct cdrom_device_info *cdi, | |
2711 | void __user *argp) | |
2712 | { | |
2713 | struct cdrom_volctrl volume; | |
2714 | ||
5944b2ce | 2715 | cd_dbg(CD_DO_IOCTL, "entering CDROMVOLCTRL\n"); |
d2c5d4fc CH |
2716 | |
2717 | if (!CDROM_CAN(CDC_PLAY_AUDIO)) | |
2718 | return -ENOSYS; | |
2719 | if (copy_from_user(&volume, argp, sizeof(volume))) | |
2720 | return -EFAULT; | |
2721 | return cdi->ops->audio_ioctl(cdi, CDROMVOLCTRL, &volume); | |
2722 | } | |
2723 | ||
2724 | static int cdrom_ioctl_volread(struct cdrom_device_info *cdi, | |
2725 | void __user *argp) | |
2726 | { | |
2727 | struct cdrom_volctrl volume; | |
2728 | int ret; | |
2729 | ||
5944b2ce | 2730 | cd_dbg(CD_DO_IOCTL, "entering CDROMVOLREAD\n"); |
d2c5d4fc CH |
2731 | |
2732 | if (!CDROM_CAN(CDC_PLAY_AUDIO)) | |
2733 | return -ENOSYS; | |
2734 | ||
2735 | ret = cdi->ops->audio_ioctl(cdi, CDROMVOLREAD, &volume); | |
2736 | if (ret) | |
2737 | return ret; | |
2738 | ||
2739 | if (copy_to_user(argp, &volume, sizeof(volume))) | |
2740 | return -EFAULT; | |
2741 | return 0; | |
2742 | } | |
2743 | ||
2744 | static int cdrom_ioctl_audioctl(struct cdrom_device_info *cdi, | |
2745 | unsigned int cmd) | |
2746 | { | |
2747 | int ret; | |
2748 | ||
5944b2ce | 2749 | cd_dbg(CD_DO_IOCTL, "doing audio ioctl (start/stop/pause/resume)\n"); |
d2c5d4fc CH |
2750 | |
2751 | if (!CDROM_CAN(CDC_PLAY_AUDIO)) | |
2752 | return -ENOSYS; | |
2753 | ret = check_for_audio_disc(cdi, cdi->ops); | |
2754 | if (ret) | |
2755 | return ret; | |
2756 | return cdi->ops->audio_ioctl(cdi, cmd, NULL); | |
2757 | } | |
2758 | ||
1da177e4 LT |
2759 | /* |
2760 | * Required when we need to use READ_10 to issue other than 2048 block | |
2761 | * reads | |
2762 | */ | |
2763 | static int cdrom_switch_blocksize(struct cdrom_device_info *cdi, int size) | |
2764 | { | |
853fe1bf | 2765 | const struct cdrom_device_ops *cdo = cdi->ops; |
1da177e4 LT |
2766 | struct packet_command cgc; |
2767 | struct modesel_head mh; | |
2768 | ||
2769 | memset(&mh, 0, sizeof(mh)); | |
2770 | mh.block_desc_length = 0x08; | |
2771 | mh.block_length_med = (size >> 8) & 0xff; | |
2772 | mh.block_length_lo = size & 0xff; | |
2773 | ||
2774 | memset(&cgc, 0, sizeof(cgc)); | |
2775 | cgc.cmd[0] = 0x15; | |
2776 | cgc.cmd[1] = 1 << 4; | |
2777 | cgc.cmd[4] = 12; | |
2778 | cgc.buflen = sizeof(mh); | |
2779 | cgc.buffer = (char *) &mh; | |
2780 | cgc.data_direction = CGC_DATA_WRITE; | |
2781 | mh.block_desc_length = 0x08; | |
2782 | mh.block_length_med = (size >> 8) & 0xff; | |
2783 | mh.block_length_lo = size & 0xff; | |
2784 | ||
2785 | return cdo->generic_packet(cdi, &cgc); | |
2786 | } | |
2787 | ||
e1e60fda JP |
2788 | static int cdrom_get_track_info(struct cdrom_device_info *cdi, |
2789 | __u16 track, __u8 type, track_information *ti) | |
2790 | { | |
853fe1bf | 2791 | const struct cdrom_device_ops *cdo = cdi->ops; |
e1e60fda JP |
2792 | struct packet_command cgc; |
2793 | int ret, buflen; | |
2794 | ||
2795 | init_cdrom_command(&cgc, ti, 8, CGC_DATA_READ); | |
2796 | cgc.cmd[0] = GPCMD_READ_TRACK_RZONE_INFO; | |
2797 | cgc.cmd[1] = type & 3; | |
2798 | cgc.cmd[4] = (track & 0xff00) >> 8; | |
2799 | cgc.cmd[5] = track & 0xff; | |
2800 | cgc.cmd[8] = 8; | |
2801 | cgc.quiet = 1; | |
2802 | ||
2803 | ret = cdo->generic_packet(cdi, &cgc); | |
2804 | if (ret) | |
2805 | return ret; | |
2806 | ||
2807 | buflen = be16_to_cpu(ti->track_information_length) + | |
2808 | sizeof(ti->track_information_length); | |
2809 | ||
2810 | if (buflen > sizeof(track_information)) | |
2811 | buflen = sizeof(track_information); | |
2812 | ||
2813 | cgc.cmd[8] = cgc.buflen = buflen; | |
2814 | ret = cdo->generic_packet(cdi, &cgc); | |
2815 | if (ret) | |
2816 | return ret; | |
2817 | ||
2818 | /* return actual fill size */ | |
2819 | return buflen; | |
2820 | } | |
2821 | ||
2822 | /* return the last written block on the CD-R media. this is for the udf | |
2823 | file system. */ | |
2824 | int cdrom_get_last_written(struct cdrom_device_info *cdi, long *last_written) | |
2825 | { | |
2826 | struct cdrom_tocentry toc; | |
2827 | disc_information di; | |
2828 | track_information ti; | |
2829 | __u32 last_track; | |
2830 | int ret = -1, ti_size; | |
2831 | ||
2832 | if (!CDROM_CAN(CDC_GENERIC_PACKET)) | |
2833 | goto use_toc; | |
2834 | ||
2835 | ret = cdrom_get_disc_info(cdi, &di); | |
2836 | if (ret < (int)(offsetof(typeof(di), last_track_lsb) | |
2837 | + sizeof(di.last_track_lsb))) | |
2838 | goto use_toc; | |
2839 | ||
2840 | /* if unit didn't return msb, it's zeroed by cdrom_get_disc_info */ | |
2841 | last_track = (di.last_track_msb << 8) | di.last_track_lsb; | |
2842 | ti_size = cdrom_get_track_info(cdi, last_track, 1, &ti); | |
2843 | if (ti_size < (int)offsetof(typeof(ti), track_start)) | |
2844 | goto use_toc; | |
2845 | ||
2846 | /* if this track is blank, try the previous. */ | |
2847 | if (ti.blank) { | |
2848 | if (last_track == 1) | |
2849 | goto use_toc; | |
2850 | last_track--; | |
2851 | ti_size = cdrom_get_track_info(cdi, last_track, 1, &ti); | |
2852 | } | |
2853 | ||
2854 | if (ti_size < (int)(offsetof(typeof(ti), track_size) | |
2855 | + sizeof(ti.track_size))) | |
2856 | goto use_toc; | |
2857 | ||
2858 | /* if last recorded field is valid, return it. */ | |
2859 | if (ti.lra_v && ti_size >= (int)(offsetof(typeof(ti), last_rec_address) | |
2860 | + sizeof(ti.last_rec_address))) { | |
2861 | *last_written = be32_to_cpu(ti.last_rec_address); | |
2862 | } else { | |
2863 | /* make it up instead */ | |
2864 | *last_written = be32_to_cpu(ti.track_start) + | |
2865 | be32_to_cpu(ti.track_size); | |
2866 | if (ti.free_blocks) | |
2867 | *last_written -= (be32_to_cpu(ti.free_blocks) + 7); | |
2868 | } | |
2869 | return 0; | |
2870 | ||
2871 | /* this is where we end up if the drive either can't do a | |
2872 | GPCMD_READ_DISC_INFO or GPCMD_READ_TRACK_RZONE_INFO or if | |
2873 | it doesn't give enough information or fails. then we return | |
2874 | the toc contents. */ | |
2875 | use_toc: | |
366ba7c7 DEP |
2876 | if (!CDROM_CAN(CDC_PLAY_AUDIO)) |
2877 | return -ENOSYS; | |
2878 | ||
e1e60fda JP |
2879 | toc.cdte_format = CDROM_MSF; |
2880 | toc.cdte_track = CDROM_LEADOUT; | |
2881 | if ((ret = cdi->ops->audio_ioctl(cdi, CDROMREADTOCENTRY, &toc))) | |
2882 | return ret; | |
2883 | sanitize_format(&toc.cdte_addr, &toc.cdte_format, CDROM_LBA); | |
2884 | *last_written = toc.cdte_addr.lba; | |
2885 | return 0; | |
2886 | } | |
eeef7565 | 2887 | EXPORT_SYMBOL(cdrom_get_last_written); |
e1e60fda | 2888 | |
dac1c5cf JP |
2889 | /* return the next writable block. also for udf file system. */ |
2890 | static int cdrom_get_next_writable(struct cdrom_device_info *cdi, | |
2891 | long *next_writable) | |
2892 | { | |
2893 | disc_information di; | |
2894 | track_information ti; | |
2895 | __u16 last_track; | |
2896 | int ret, ti_size; | |
2897 | ||
2898 | if (!CDROM_CAN(CDC_GENERIC_PACKET)) | |
2899 | goto use_last_written; | |
2900 | ||
2901 | ret = cdrom_get_disc_info(cdi, &di); | |
2902 | if (ret < 0 || ret < offsetof(typeof(di), last_track_lsb) | |
2903 | + sizeof(di.last_track_lsb)) | |
2904 | goto use_last_written; | |
2905 | ||
2906 | /* if unit didn't return msb, it's zeroed by cdrom_get_disc_info */ | |
2907 | last_track = (di.last_track_msb << 8) | di.last_track_lsb; | |
2908 | ti_size = cdrom_get_track_info(cdi, last_track, 1, &ti); | |
2909 | if (ti_size < 0 || ti_size < offsetof(typeof(ti), track_start)) | |
2910 | goto use_last_written; | |
2911 | ||
2912 | /* if this track is blank, try the previous. */ | |
2913 | if (ti.blank) { | |
2914 | if (last_track == 1) | |
2915 | goto use_last_written; | |
2916 | last_track--; | |
2917 | ti_size = cdrom_get_track_info(cdi, last_track, 1, &ti); | |
2918 | if (ti_size < 0) | |
2919 | goto use_last_written; | |
2920 | } | |
2921 | ||
2922 | /* if next recordable address field is valid, use it. */ | |
2923 | if (ti.nwa_v && ti_size >= offsetof(typeof(ti), next_writable) | |
2924 | + sizeof(ti.next_writable)) { | |
2925 | *next_writable = be32_to_cpu(ti.next_writable); | |
2926 | return 0; | |
2927 | } | |
2928 | ||
2929 | use_last_written: | |
2930 | ret = cdrom_get_last_written(cdi, next_writable); | |
2931 | if (ret) { | |
2932 | *next_writable = 0; | |
2933 | return ret; | |
2934 | } else { | |
2935 | *next_writable += 7; | |
2936 | return 0; | |
2937 | } | |
2938 | } | |
2939 | ||
3147c531 | 2940 | static noinline int mmc_ioctl_cdrom_read_data(struct cdrom_device_info *cdi, |
2e9aa08a JP |
2941 | void __user *arg, |
2942 | struct packet_command *cgc, | |
2943 | int cmd) | |
3147c531 | 2944 | { |
e7d0748d | 2945 | struct scsi_sense_hdr sshdr; |
3147c531 MS |
2946 | struct cdrom_msf msf; |
2947 | int blocksize = 0, format = 0, lba; | |
2948 | int ret; | |
1da177e4 | 2949 | |
1da177e4 LT |
2950 | switch (cmd) { |
2951 | case CDROMREADRAW: | |
3147c531 MS |
2952 | blocksize = CD_FRAMESIZE_RAW; |
2953 | break; | |
1da177e4 | 2954 | case CDROMREADMODE1: |
3147c531 MS |
2955 | blocksize = CD_FRAMESIZE; |
2956 | format = 2; | |
2957 | break; | |
2958 | case CDROMREADMODE2: | |
2959 | blocksize = CD_FRAMESIZE_RAW0; | |
2960 | break; | |
2961 | } | |
a09c391d JP |
2962 | if (copy_from_user(&msf, (struct cdrom_msf __user *)arg, sizeof(msf))) |
2963 | return -EFAULT; | |
3147c531 MS |
2964 | lba = msf_to_lba(msf.cdmsf_min0, msf.cdmsf_sec0, msf.cdmsf_frame0); |
2965 | /* FIXME: we need upper bound checking, too!! */ | |
2966 | if (lba < 0) | |
2967 | return -EINVAL; | |
2968 | ||
542db015 | 2969 | cgc->buffer = kzalloc(blocksize, GFP_KERNEL); |
3147c531 MS |
2970 | if (cgc->buffer == NULL) |
2971 | return -ENOMEM; | |
2972 | ||
e7d0748d KC |
2973 | memset(&sshdr, 0, sizeof(sshdr)); |
2974 | cgc->sshdr = &sshdr; | |
3147c531 MS |
2975 | cgc->data_direction = CGC_DATA_READ; |
2976 | ret = cdrom_read_block(cdi, cgc, lba, 1, format, blocksize); | |
e7d0748d KC |
2977 | if (ret && sshdr.sense_key == 0x05 && |
2978 | sshdr.asc == 0x20 && | |
2979 | sshdr.ascq == 0x00) { | |
3147c531 MS |
2980 | /* |
2981 | * SCSI-II devices are not required to support | |
2982 | * READ_CD, so let's try switching block size | |
2983 | */ | |
b5f32555 SAS |
2984 | if (blocksize != CD_FRAMESIZE) { |
2985 | ret = cdrom_switch_blocksize(cdi, blocksize); | |
2986 | if (ret) | |
2987 | goto out; | |
2988 | } | |
e7d0748d | 2989 | cgc->sshdr = NULL; |
3147c531 | 2990 | ret = cdrom_read_cd(cdi, cgc, lba, blocksize, 1); |
b5f32555 SAS |
2991 | if (blocksize != CD_FRAMESIZE) |
2992 | ret |= cdrom_switch_blocksize(cdi, CD_FRAMESIZE); | |
3147c531 MS |
2993 | } |
2994 | if (!ret && copy_to_user(arg, cgc->buffer, blocksize)) | |
2995 | ret = -EFAULT; | |
2996 | out: | |
2997 | kfree(cgc->buffer); | |
2998 | return ret; | |
2999 | } | |
3000 | ||
3001 | static noinline int mmc_ioctl_cdrom_read_audio(struct cdrom_device_info *cdi, | |
2e9aa08a | 3002 | void __user *arg) |
3147c531 MS |
3003 | { |
3004 | struct cdrom_read_audio ra; | |
3005 | int lba; | |
3006 | ||
8f8f5620 AB |
3007 | #ifdef CONFIG_COMPAT |
3008 | if (in_compat_syscall()) { | |
3009 | struct compat_cdrom_read_audio { | |
3010 | union cdrom_addr addr; | |
3011 | u8 addr_format; | |
3012 | compat_int_t nframes; | |
3013 | compat_caddr_t buf; | |
3014 | } ra32; | |
3015 | ||
3016 | if (copy_from_user(&ra32, arg, sizeof(ra32))) | |
3017 | return -EFAULT; | |
3018 | ||
3019 | ra = (struct cdrom_read_audio) { | |
3020 | .addr = ra32.addr, | |
3021 | .addr_format = ra32.addr_format, | |
3022 | .nframes = ra32.nframes, | |
3023 | .buf = compat_ptr(ra32.buf), | |
3024 | }; | |
3025 | } else | |
3026 | #endif | |
3027 | { | |
3028 | if (copy_from_user(&ra, (struct cdrom_read_audio __user *)arg, | |
3029 | sizeof(ra))) | |
3030 | return -EFAULT; | |
3031 | } | |
3147c531 MS |
3032 | |
3033 | if (ra.addr_format == CDROM_MSF) | |
3034 | lba = msf_to_lba(ra.addr.msf.minute, | |
3035 | ra.addr.msf.second, | |
3036 | ra.addr.msf.frame); | |
3037 | else if (ra.addr_format == CDROM_LBA) | |
3038 | lba = ra.addr.lba; | |
3039 | else | |
3040 | return -EINVAL; | |
3041 | ||
3042 | /* FIXME: we need upper bound checking, too!! */ | |
3043 | if (lba < 0 || ra.nframes <= 0 || ra.nframes > CD_FRAMES) | |
3044 | return -EINVAL; | |
3045 | ||
3046 | return cdrom_read_cdda(cdi, ra.buf, lba, ra.nframes); | |
3047 | } | |
3048 | ||
3049 | static noinline int mmc_ioctl_cdrom_subchannel(struct cdrom_device_info *cdi, | |
2e9aa08a | 3050 | void __user *arg) |
3147c531 MS |
3051 | { |
3052 | int ret; | |
3053 | struct cdrom_subchnl q; | |
3054 | u_char requested, back; | |
a09c391d JP |
3055 | if (copy_from_user(&q, (struct cdrom_subchnl __user *)arg, sizeof(q))) |
3056 | return -EFAULT; | |
3147c531 MS |
3057 | requested = q.cdsc_format; |
3058 | if (!((requested == CDROM_MSF) || | |
3059 | (requested == CDROM_LBA))) | |
3060 | return -EINVAL; | |
bf294e83 | 3061 | |
3147c531 MS |
3062 | ret = cdrom_read_subchannel(cdi, &q, 0); |
3063 | if (ret) | |
1da177e4 | 3064 | return ret; |
3147c531 MS |
3065 | back = q.cdsc_format; /* local copy */ |
3066 | sanitize_format(&q.cdsc_absaddr, &back, requested); | |
3067 | sanitize_format(&q.cdsc_reladdr, &q.cdsc_format, requested); | |
a09c391d JP |
3068 | if (copy_to_user((struct cdrom_subchnl __user *)arg, &q, sizeof(q))) |
3069 | return -EFAULT; | |
5944b2ce | 3070 | /* cd_dbg(CD_DO_IOCTL, "CDROMSUBCHNL successful\n"); */ |
3147c531 MS |
3071 | return 0; |
3072 | } | |
1da177e4 | 3073 | |
3147c531 | 3074 | static noinline int mmc_ioctl_cdrom_play_msf(struct cdrom_device_info *cdi, |
2e9aa08a JP |
3075 | void __user *arg, |
3076 | struct packet_command *cgc) | |
3147c531 | 3077 | { |
853fe1bf | 3078 | const struct cdrom_device_ops *cdo = cdi->ops; |
3147c531 | 3079 | struct cdrom_msf msf; |
5944b2ce | 3080 | cd_dbg(CD_DO_IOCTL, "entering CDROMPLAYMSF\n"); |
a09c391d JP |
3081 | if (copy_from_user(&msf, (struct cdrom_msf __user *)arg, sizeof(msf))) |
3082 | return -EFAULT; | |
3147c531 MS |
3083 | cgc->cmd[0] = GPCMD_PLAY_AUDIO_MSF; |
3084 | cgc->cmd[3] = msf.cdmsf_min0; | |
3085 | cgc->cmd[4] = msf.cdmsf_sec0; | |
3086 | cgc->cmd[5] = msf.cdmsf_frame0; | |
3087 | cgc->cmd[6] = msf.cdmsf_min1; | |
3088 | cgc->cmd[7] = msf.cdmsf_sec1; | |
3089 | cgc->cmd[8] = msf.cdmsf_frame1; | |
3090 | cgc->data_direction = CGC_DATA_NONE; | |
3091 | return cdo->generic_packet(cdi, cgc); | |
3092 | } | |
1da177e4 | 3093 | |
3147c531 | 3094 | static noinline int mmc_ioctl_cdrom_play_blk(struct cdrom_device_info *cdi, |
2e9aa08a JP |
3095 | void __user *arg, |
3096 | struct packet_command *cgc) | |
3147c531 | 3097 | { |
853fe1bf | 3098 | const struct cdrom_device_ops *cdo = cdi->ops; |
3147c531 | 3099 | struct cdrom_blk blk; |
5944b2ce | 3100 | cd_dbg(CD_DO_IOCTL, "entering CDROMPLAYBLK\n"); |
a09c391d JP |
3101 | if (copy_from_user(&blk, (struct cdrom_blk __user *)arg, sizeof(blk))) |
3102 | return -EFAULT; | |
3147c531 MS |
3103 | cgc->cmd[0] = GPCMD_PLAY_AUDIO_10; |
3104 | cgc->cmd[2] = (blk.from >> 24) & 0xff; | |
3105 | cgc->cmd[3] = (blk.from >> 16) & 0xff; | |
3106 | cgc->cmd[4] = (blk.from >> 8) & 0xff; | |
3107 | cgc->cmd[5] = blk.from & 0xff; | |
3108 | cgc->cmd[7] = (blk.len >> 8) & 0xff; | |
3109 | cgc->cmd[8] = blk.len & 0xff; | |
3110 | cgc->data_direction = CGC_DATA_NONE; | |
3111 | return cdo->generic_packet(cdi, cgc); | |
3112 | } | |
1da177e4 | 3113 | |
3147c531 | 3114 | static noinline int mmc_ioctl_cdrom_volume(struct cdrom_device_info *cdi, |
2e9aa08a JP |
3115 | void __user *arg, |
3116 | struct packet_command *cgc, | |
3117 | unsigned int cmd) | |
3147c531 MS |
3118 | { |
3119 | struct cdrom_volctrl volctrl; | |
3120 | unsigned char buffer[32]; | |
3121 | char mask[sizeof(buffer)]; | |
3122 | unsigned short offset; | |
3123 | int ret; | |
3124 | ||
5944b2ce | 3125 | cd_dbg(CD_DO_IOCTL, "entering CDROMVOLUME\n"); |
1da177e4 | 3126 | |
a09c391d JP |
3127 | if (copy_from_user(&volctrl, (struct cdrom_volctrl __user *)arg, |
3128 | sizeof(volctrl))) | |
3129 | return -EFAULT; | |
1da177e4 | 3130 | |
3147c531 MS |
3131 | cgc->buffer = buffer; |
3132 | cgc->buflen = 24; | |
3133 | ret = cdrom_mode_sense(cdi, cgc, GPMODE_AUDIO_CTL_PAGE, 0); | |
3134 | if (ret) | |
3135 | return ret; | |
1da177e4 | 3136 | |
3147c531 MS |
3137 | /* originally the code depended on buffer[1] to determine |
3138 | how much data is available for transfer. buffer[1] is | |
3139 | unfortunately ambigious and the only reliable way seem | |
3140 | to be to simply skip over the block descriptor... */ | |
3141 | offset = 8 + be16_to_cpu(*(__be16 *)(buffer + 6)); | |
3142 | ||
3143 | if (offset + 16 > sizeof(buffer)) | |
3144 | return -E2BIG; | |
3145 | ||
3146 | if (offset + 16 > cgc->buflen) { | |
3147 | cgc->buflen = offset + 16; | |
3148 | ret = cdrom_mode_sense(cdi, cgc, | |
2e9aa08a | 3149 | GPMODE_AUDIO_CTL_PAGE, 0); |
3147c531 MS |
3150 | if (ret) |
3151 | return ret; | |
3152 | } | |
1da177e4 | 3153 | |
3147c531 MS |
3154 | /* sanity check */ |
3155 | if ((buffer[offset] & 0x3f) != GPMODE_AUDIO_CTL_PAGE || | |
2e9aa08a | 3156 | buffer[offset + 1] < 14) |
3147c531 | 3157 | return -EINVAL; |
1da177e4 | 3158 | |
3147c531 MS |
3159 | /* now we have the current volume settings. if it was only |
3160 | a CDROMVOLREAD, return these values */ | |
3161 | if (cmd == CDROMVOLREAD) { | |
3162 | volctrl.channel0 = buffer[offset+9]; | |
3163 | volctrl.channel1 = buffer[offset+11]; | |
3164 | volctrl.channel2 = buffer[offset+13]; | |
3165 | volctrl.channel3 = buffer[offset+15]; | |
a09c391d JP |
3166 | if (copy_to_user((struct cdrom_volctrl __user *)arg, &volctrl, |
3167 | sizeof(volctrl))) | |
3168 | return -EFAULT; | |
3147c531 MS |
3169 | return 0; |
3170 | } | |
1da177e4 | 3171 | |
3147c531 MS |
3172 | /* get the volume mask */ |
3173 | cgc->buffer = mask; | |
3174 | ret = cdrom_mode_sense(cdi, cgc, GPMODE_AUDIO_CTL_PAGE, 1); | |
3175 | if (ret) | |
3176 | return ret; | |
1da177e4 | 3177 | |
3147c531 MS |
3178 | buffer[offset + 9] = volctrl.channel0 & mask[offset + 9]; |
3179 | buffer[offset + 11] = volctrl.channel1 & mask[offset + 11]; | |
3180 | buffer[offset + 13] = volctrl.channel2 & mask[offset + 13]; | |
3181 | buffer[offset + 15] = volctrl.channel3 & mask[offset + 15]; | |
1da177e4 | 3182 | |
3147c531 MS |
3183 | /* set volume */ |
3184 | cgc->buffer = buffer + offset - 8; | |
3185 | memset(cgc->buffer, 0, 8); | |
3186 | return cdrom_mode_select(cdi, cgc); | |
3187 | } | |
1da177e4 | 3188 | |
3147c531 | 3189 | static noinline int mmc_ioctl_cdrom_start_stop(struct cdrom_device_info *cdi, |
2e9aa08a JP |
3190 | struct packet_command *cgc, |
3191 | int cmd) | |
3147c531 | 3192 | { |
853fe1bf | 3193 | const struct cdrom_device_ops *cdo = cdi->ops; |
5944b2ce | 3194 | cd_dbg(CD_DO_IOCTL, "entering CDROMSTART/CDROMSTOP\n"); |
3147c531 MS |
3195 | cgc->cmd[0] = GPCMD_START_STOP_UNIT; |
3196 | cgc->cmd[1] = 1; | |
3197 | cgc->cmd[4] = (cmd == CDROMSTART) ? 1 : 0; | |
3198 | cgc->data_direction = CGC_DATA_NONE; | |
3199 | return cdo->generic_packet(cdi, cgc); | |
3200 | } | |
1da177e4 | 3201 | |
3147c531 | 3202 | static noinline int mmc_ioctl_cdrom_pause_resume(struct cdrom_device_info *cdi, |
2e9aa08a JP |
3203 | struct packet_command *cgc, |
3204 | int cmd) | |
3147c531 | 3205 | { |
853fe1bf | 3206 | const struct cdrom_device_ops *cdo = cdi->ops; |
5944b2ce | 3207 | cd_dbg(CD_DO_IOCTL, "entering CDROMPAUSE/CDROMRESUME\n"); |
3147c531 MS |
3208 | cgc->cmd[0] = GPCMD_PAUSE_RESUME; |
3209 | cgc->cmd[8] = (cmd == CDROMRESUME) ? 1 : 0; | |
3210 | cgc->data_direction = CGC_DATA_NONE; | |
3211 | return cdo->generic_packet(cdi, cgc); | |
3212 | } | |
1da177e4 | 3213 | |
3147c531 | 3214 | static noinline int mmc_ioctl_dvd_read_struct(struct cdrom_device_info *cdi, |
2e9aa08a JP |
3215 | void __user *arg, |
3216 | struct packet_command *cgc) | |
3147c531 MS |
3217 | { |
3218 | int ret; | |
3219 | dvd_struct *s; | |
3220 | int size = sizeof(dvd_struct); | |
3221 | ||
3222 | if (!CDROM_CAN(CDC_DVD)) | |
3223 | return -ENOSYS; | |
3224 | ||
abb0f6a7 AV |
3225 | s = memdup_user(arg, size); |
3226 | if (IS_ERR(s)) | |
3227 | return PTR_ERR(s); | |
3147c531 | 3228 | |
5944b2ce | 3229 | cd_dbg(CD_DO_IOCTL, "entering DVD_READ_STRUCT\n"); |
3147c531 | 3230 | |
d194139c | 3231 | ret = dvd_read_struct(cdi, s, cgc); |
3147c531 MS |
3232 | if (ret) |
3233 | goto out; | |
3234 | ||
3235 | if (copy_to_user(arg, s, size)) | |
3236 | ret = -EFAULT; | |
3237 | out: | |
3238 | kfree(s); | |
3239 | return ret; | |
3240 | } | |
3241 | ||
3242 | static noinline int mmc_ioctl_dvd_auth(struct cdrom_device_info *cdi, | |
2e9aa08a | 3243 | void __user *arg) |
3147c531 MS |
3244 | { |
3245 | int ret; | |
3246 | dvd_authinfo ai; | |
3247 | if (!CDROM_CAN(CDC_DVD)) | |
3248 | return -ENOSYS; | |
5944b2ce | 3249 | cd_dbg(CD_DO_IOCTL, "entering DVD_AUTH\n"); |
a09c391d JP |
3250 | if (copy_from_user(&ai, (dvd_authinfo __user *)arg, sizeof(ai))) |
3251 | return -EFAULT; | |
3147c531 MS |
3252 | ret = dvd_do_auth(cdi, &ai); |
3253 | if (ret) | |
1da177e4 | 3254 | return ret; |
a09c391d JP |
3255 | if (copy_to_user((dvd_authinfo __user *)arg, &ai, sizeof(ai))) |
3256 | return -EFAULT; | |
3147c531 MS |
3257 | return 0; |
3258 | } | |
1da177e4 | 3259 | |
3147c531 | 3260 | static noinline int mmc_ioctl_cdrom_next_writable(struct cdrom_device_info *cdi, |
2e9aa08a | 3261 | void __user *arg) |
3147c531 MS |
3262 | { |
3263 | int ret; | |
3264 | long next = 0; | |
5944b2ce | 3265 | cd_dbg(CD_DO_IOCTL, "entering CDROM_NEXT_WRITABLE\n"); |
3147c531 MS |
3266 | ret = cdrom_get_next_writable(cdi, &next); |
3267 | if (ret) | |
3268 | return ret; | |
a09c391d JP |
3269 | if (copy_to_user((long __user *)arg, &next, sizeof(next))) |
3270 | return -EFAULT; | |
3147c531 MS |
3271 | return 0; |
3272 | } | |
1da177e4 | 3273 | |
3147c531 | 3274 | static noinline int mmc_ioctl_cdrom_last_written(struct cdrom_device_info *cdi, |
2e9aa08a | 3275 | void __user *arg) |
3147c531 MS |
3276 | { |
3277 | int ret; | |
3278 | long last = 0; | |
5944b2ce | 3279 | cd_dbg(CD_DO_IOCTL, "entering CDROM_LAST_WRITTEN\n"); |
3147c531 MS |
3280 | ret = cdrom_get_last_written(cdi, &last); |
3281 | if (ret) | |
3282 | return ret; | |
ab8bc541 AB |
3283 | if (in_compat_syscall()) |
3284 | return put_user(last, (__s32 __user *)arg); | |
3285 | ||
3286 | return put_user(last, (long __user *)arg); | |
3147c531 MS |
3287 | } |
3288 | ||
3289 | static int mmc_ioctl(struct cdrom_device_info *cdi, unsigned int cmd, | |
3290 | unsigned long arg) | |
3291 | { | |
3292 | struct packet_command cgc; | |
3293 | void __user *userptr = (void __user *)arg; | |
3294 | ||
3295 | memset(&cgc, 0, sizeof(cgc)); | |
3296 | ||
3297 | /* build a unified command and queue it through | |
3298 | cdo->generic_packet() */ | |
3299 | switch (cmd) { | |
3300 | case CDROMREADRAW: | |
3301 | case CDROMREADMODE1: | |
3302 | case CDROMREADMODE2: | |
3303 | return mmc_ioctl_cdrom_read_data(cdi, userptr, &cgc, cmd); | |
3304 | case CDROMREADAUDIO: | |
3305 | return mmc_ioctl_cdrom_read_audio(cdi, userptr); | |
3306 | case CDROMSUBCHNL: | |
3307 | return mmc_ioctl_cdrom_subchannel(cdi, userptr); | |
3308 | case CDROMPLAYMSF: | |
3309 | return mmc_ioctl_cdrom_play_msf(cdi, userptr, &cgc); | |
3310 | case CDROMPLAYBLK: | |
3311 | return mmc_ioctl_cdrom_play_blk(cdi, userptr, &cgc); | |
3312 | case CDROMVOLCTRL: | |
3313 | case CDROMVOLREAD: | |
3314 | return mmc_ioctl_cdrom_volume(cdi, userptr, &cgc, cmd); | |
3315 | case CDROMSTART: | |
3316 | case CDROMSTOP: | |
3317 | return mmc_ioctl_cdrom_start_stop(cdi, &cgc, cmd); | |
3318 | case CDROMPAUSE: | |
3319 | case CDROMRESUME: | |
3320 | return mmc_ioctl_cdrom_pause_resume(cdi, &cgc, cmd); | |
3321 | case DVD_READ_STRUCT: | |
d194139c | 3322 | return mmc_ioctl_dvd_read_struct(cdi, userptr, &cgc); |
3147c531 MS |
3323 | case DVD_AUTH: |
3324 | return mmc_ioctl_dvd_auth(cdi, userptr); | |
3325 | case CDROM_NEXT_WRITABLE: | |
3326 | return mmc_ioctl_cdrom_next_writable(cdi, userptr); | |
3327 | case CDROM_LAST_WRITTEN: | |
3328 | return mmc_ioctl_cdrom_last_written(cdi, userptr); | |
3329 | } | |
1da177e4 LT |
3330 | |
3331 | return -ENOTTY; | |
3332 | } | |
3333 | ||
2e9aa08a JP |
3334 | /* |
3335 | * Just about every imaginable ioctl is supported in the Uniform layer | |
3336 | * these days. | |
3337 | * ATAPI / SCSI specific code now mainly resides in mmc_ioctl(). | |
3338 | */ | |
3339 | int cdrom_ioctl(struct cdrom_device_info *cdi, struct block_device *bdev, | |
3340 | fmode_t mode, unsigned int cmd, unsigned long arg) | |
3341 | { | |
3342 | void __user *argp = (void __user *)arg; | |
3343 | int ret; | |
3344 | ||
2e9aa08a JP |
3345 | switch (cmd) { |
3346 | case CDROMMULTISESSION: | |
3347 | return cdrom_ioctl_multisession(cdi, argp); | |
3348 | case CDROMEJECT: | |
3349 | return cdrom_ioctl_eject(cdi); | |
3350 | case CDROMCLOSETRAY: | |
3351 | return cdrom_ioctl_closetray(cdi); | |
3352 | case CDROMEJECT_SW: | |
3353 | return cdrom_ioctl_eject_sw(cdi, arg); | |
3354 | case CDROM_MEDIA_CHANGED: | |
3355 | return cdrom_ioctl_media_changed(cdi, arg); | |
67f1e027 LP |
3356 | case CDROM_TIMED_MEDIA_CHANGE: |
3357 | return cdrom_ioctl_timed_media_change(cdi, arg); | |
2e9aa08a JP |
3358 | case CDROM_SET_OPTIONS: |
3359 | return cdrom_ioctl_set_options(cdi, arg); | |
3360 | case CDROM_CLEAR_OPTIONS: | |
3361 | return cdrom_ioctl_clear_options(cdi, arg); | |
3362 | case CDROM_SELECT_SPEED: | |
3363 | return cdrom_ioctl_select_speed(cdi, arg); | |
3364 | case CDROM_SELECT_DISC: | |
3365 | return cdrom_ioctl_select_disc(cdi, arg); | |
3366 | case CDROMRESET: | |
3367 | return cdrom_ioctl_reset(cdi, bdev); | |
3368 | case CDROM_LOCKDOOR: | |
3369 | return cdrom_ioctl_lock_door(cdi, arg); | |
3370 | case CDROM_DEBUG: | |
3371 | return cdrom_ioctl_debug(cdi, arg); | |
3372 | case CDROM_GET_CAPABILITY: | |
3373 | return cdrom_ioctl_get_capability(cdi); | |
3374 | case CDROM_GET_MCN: | |
3375 | return cdrom_ioctl_get_mcn(cdi, argp); | |
3376 | case CDROM_DRIVE_STATUS: | |
3377 | return cdrom_ioctl_drive_status(cdi, arg); | |
3378 | case CDROM_DISC_STATUS: | |
3379 | return cdrom_ioctl_disc_status(cdi); | |
3380 | case CDROM_CHANGER_NSLOTS: | |
3381 | return cdrom_ioctl_changer_nslots(cdi); | |
3382 | } | |
3383 | ||
3384 | /* | |
3385 | * Use the ioctls that are implemented through the generic_packet() | |
3386 | * interface. this may look at bit funny, but if -ENOTTY is | |
3387 | * returned that particular ioctl is not implemented and we | |
3388 | * let it go through the device specific ones. | |
3389 | */ | |
3390 | if (CDROM_CAN(CDC_GENERIC_PACKET)) { | |
3391 | ret = mmc_ioctl(cdi, cmd, arg); | |
3392 | if (ret != -ENOTTY) | |
3393 | return ret; | |
3394 | } | |
3395 | ||
3396 | /* | |
3397 | * Note: most of the cd_dbg() calls are commented out here, | |
3398 | * because they fill up the sys log when CD players poll | |
3399 | * the drive. | |
3400 | */ | |
3401 | switch (cmd) { | |
3402 | case CDROMSUBCHNL: | |
3403 | return cdrom_ioctl_get_subchnl(cdi, argp); | |
3404 | case CDROMREADTOCHDR: | |
3405 | return cdrom_ioctl_read_tochdr(cdi, argp); | |
3406 | case CDROMREADTOCENTRY: | |
3407 | return cdrom_ioctl_read_tocentry(cdi, argp); | |
3408 | case CDROMPLAYMSF: | |
3409 | return cdrom_ioctl_play_msf(cdi, argp); | |
3410 | case CDROMPLAYTRKIND: | |
3411 | return cdrom_ioctl_play_trkind(cdi, argp); | |
3412 | case CDROMVOLCTRL: | |
3413 | return cdrom_ioctl_volctrl(cdi, argp); | |
3414 | case CDROMVOLREAD: | |
3415 | return cdrom_ioctl_volread(cdi, argp); | |
3416 | case CDROMSTART: | |
3417 | case CDROMSTOP: | |
3418 | case CDROMPAUSE: | |
3419 | case CDROMRESUME: | |
3420 | return cdrom_ioctl_audioctl(cdi, cmd); | |
3421 | } | |
3422 | ||
3423 | return -ENOSYS; | |
3424 | } | |
1da177e4 | 3425 | EXPORT_SYMBOL(cdrom_ioctl); |
1da177e4 LT |
3426 | |
3427 | #ifdef CONFIG_SYSCTL | |
3428 | ||
3429 | #define CDROM_STR_SIZE 1000 | |
3430 | ||
3431 | static struct cdrom_sysctl_settings { | |
3432 | char info[CDROM_STR_SIZE]; /* general info */ | |
3433 | int autoclose; /* close tray upon mount, etc */ | |
3434 | int autoeject; /* eject on umount */ | |
3435 | int debug; /* turn on debugging messages */ | |
3436 | int lock; /* lock the door on device open */ | |
3437 | int check; /* check media type */ | |
3438 | } cdrom_sysctl_settings; | |
3439 | ||
554988d6 DY |
3440 | enum cdrom_print_option { |
3441 | CTL_NAME, | |
3442 | CTL_SPEED, | |
3443 | CTL_SLOTS, | |
3444 | CTL_CAPABILITY | |
3445 | }; | |
3446 | ||
3447 | static int cdrom_print_info(const char *header, int val, char *info, | |
3448 | int *pos, enum cdrom_print_option option) | |
3449 | { | |
3450 | const int max_size = sizeof(cdrom_sysctl_settings.info); | |
3451 | struct cdrom_device_info *cdi; | |
3452 | int ret; | |
3453 | ||
3454 | ret = scnprintf(info + *pos, max_size - *pos, header); | |
3455 | if (!ret) | |
3456 | return 1; | |
3457 | ||
3458 | *pos += ret; | |
3459 | ||
7fd097d4 | 3460 | list_for_each_entry(cdi, &cdrom_list, list) { |
554988d6 DY |
3461 | switch (option) { |
3462 | case CTL_NAME: | |
3463 | ret = scnprintf(info + *pos, max_size - *pos, | |
3464 | "\t%s", cdi->name); | |
3465 | break; | |
3466 | case CTL_SPEED: | |
3467 | ret = scnprintf(info + *pos, max_size - *pos, | |
3468 | "\t%d", cdi->speed); | |
3469 | break; | |
3470 | case CTL_SLOTS: | |
3471 | ret = scnprintf(info + *pos, max_size - *pos, | |
3472 | "\t%d", cdi->capacity); | |
3473 | break; | |
3474 | case CTL_CAPABILITY: | |
3475 | ret = scnprintf(info + *pos, max_size - *pos, | |
3476 | "\t%d", CDROM_CAN(val) != 0); | |
3477 | break; | |
3478 | default: | |
e597cd09 | 3479 | pr_info("invalid option%d\n", option); |
554988d6 DY |
3480 | return 1; |
3481 | } | |
3482 | if (!ret) | |
3483 | return 1; | |
3484 | *pos += ret; | |
3485 | } | |
3486 | ||
3487 | return 0; | |
3488 | } | |
3489 | ||
90a3b89e | 3490 | static int cdrom_sysctl_info(struct ctl_table *ctl, int write, |
8c46fa96 | 3491 | void *buffer, size_t *lenp, loff_t *ppos) |
1da177e4 | 3492 | { |
554988d6 | 3493 | int pos; |
1da177e4 | 3494 | char *info = cdrom_sysctl_settings.info; |
554988d6 | 3495 | const int max_size = sizeof(cdrom_sysctl_settings.info); |
1da177e4 LT |
3496 | |
3497 | if (!*lenp || (*ppos && !write)) { | |
3498 | *lenp = 0; | |
3499 | return 0; | |
3500 | } | |
3501 | ||
554988d6 DY |
3502 | mutex_lock(&cdrom_mutex); |
3503 | ||
1da177e4 LT |
3504 | pos = sprintf(info, "CD-ROM information, " VERSION "\n"); |
3505 | ||
554988d6 DY |
3506 | if (cdrom_print_info("\ndrive name:\t", 0, info, &pos, CTL_NAME)) |
3507 | goto done; | |
3508 | if (cdrom_print_info("\ndrive speed:\t", 0, info, &pos, CTL_SPEED)) | |
3509 | goto done; | |
3510 | if (cdrom_print_info("\ndrive # of slots:", 0, info, &pos, CTL_SLOTS)) | |
3511 | goto done; | |
3512 | if (cdrom_print_info("\nCan close tray:\t", | |
3513 | CDC_CLOSE_TRAY, info, &pos, CTL_CAPABILITY)) | |
3514 | goto done; | |
3515 | if (cdrom_print_info("\nCan open tray:\t", | |
3516 | CDC_OPEN_TRAY, info, &pos, CTL_CAPABILITY)) | |
3517 | goto done; | |
3518 | if (cdrom_print_info("\nCan lock tray:\t", | |
3519 | CDC_LOCK, info, &pos, CTL_CAPABILITY)) | |
3520 | goto done; | |
3521 | if (cdrom_print_info("\nCan change speed:", | |
3522 | CDC_SELECT_SPEED, info, &pos, CTL_CAPABILITY)) | |
3523 | goto done; | |
3524 | if (cdrom_print_info("\nCan select disk:", | |
3525 | CDC_SELECT_DISC, info, &pos, CTL_CAPABILITY)) | |
3526 | goto done; | |
3527 | if (cdrom_print_info("\nCan read multisession:", | |
3528 | CDC_MULTI_SESSION, info, &pos, CTL_CAPABILITY)) | |
3529 | goto done; | |
3530 | if (cdrom_print_info("\nCan read MCN:\t", | |
3531 | CDC_MCN, info, &pos, CTL_CAPABILITY)) | |
3532 | goto done; | |
3533 | if (cdrom_print_info("\nReports media changed:", | |
3534 | CDC_MEDIA_CHANGED, info, &pos, CTL_CAPABILITY)) | |
3535 | goto done; | |
3536 | if (cdrom_print_info("\nCan play audio:\t", | |
3537 | CDC_PLAY_AUDIO, info, &pos, CTL_CAPABILITY)) | |
3538 | goto done; | |
3539 | if (cdrom_print_info("\nCan write CD-R:\t", | |
3540 | CDC_CD_R, info, &pos, CTL_CAPABILITY)) | |
3541 | goto done; | |
3542 | if (cdrom_print_info("\nCan write CD-RW:", | |
3543 | CDC_CD_RW, info, &pos, CTL_CAPABILITY)) | |
3544 | goto done; | |
3545 | if (cdrom_print_info("\nCan read DVD:\t", | |
3546 | CDC_DVD, info, &pos, CTL_CAPABILITY)) | |
3547 | goto done; | |
3548 | if (cdrom_print_info("\nCan write DVD-R:", | |
3549 | CDC_DVD_R, info, &pos, CTL_CAPABILITY)) | |
3550 | goto done; | |
3551 | if (cdrom_print_info("\nCan write DVD-RAM:", | |
3552 | CDC_DVD_RAM, info, &pos, CTL_CAPABILITY)) | |
3553 | goto done; | |
3554 | if (cdrom_print_info("\nCan read MRW:\t", | |
3555 | CDC_MRW, info, &pos, CTL_CAPABILITY)) | |
3556 | goto done; | |
3557 | if (cdrom_print_info("\nCan write MRW:\t", | |
3558 | CDC_MRW_W, info, &pos, CTL_CAPABILITY)) | |
3559 | goto done; | |
3560 | if (cdrom_print_info("\nCan write RAM:\t", | |
3561 | CDC_RAM, info, &pos, CTL_CAPABILITY)) | |
3562 | goto done; | |
3563 | if (!scnprintf(info + pos, max_size - pos, "\n\n")) | |
3564 | goto done; | |
3565 | doit: | |
3566 | mutex_unlock(&cdrom_mutex); | |
8d65af78 | 3567 | return proc_dostring(ctl, write, buffer, lenp, ppos); |
554988d6 | 3568 | done: |
e597cd09 | 3569 | pr_info("info buffer too small\n"); |
554988d6 | 3570 | goto doit; |
1da177e4 LT |
3571 | } |
3572 | ||
3573 | /* Unfortunately, per device settings are not implemented through | |
3574 | procfs/sysctl yet. When they are, this will naturally disappear. For now | |
3575 | just update all drives. Later this will become the template on which | |
3576 | new registered drives will be based. */ | |
3577 | static void cdrom_update_settings(void) | |
3578 | { | |
3579 | struct cdrom_device_info *cdi; | |
3580 | ||
032d8d90 | 3581 | mutex_lock(&cdrom_mutex); |
7fd097d4 | 3582 | list_for_each_entry(cdi, &cdrom_list, list) { |
1da177e4 LT |
3583 | if (autoclose && CDROM_CAN(CDC_CLOSE_TRAY)) |
3584 | cdi->options |= CDO_AUTO_CLOSE; | |
3585 | else if (!autoclose) | |
3586 | cdi->options &= ~CDO_AUTO_CLOSE; | |
3587 | if (autoeject && CDROM_CAN(CDC_OPEN_TRAY)) | |
3588 | cdi->options |= CDO_AUTO_EJECT; | |
3589 | else if (!autoeject) | |
3590 | cdi->options &= ~CDO_AUTO_EJECT; | |
3591 | if (lockdoor && CDROM_CAN(CDC_LOCK)) | |
3592 | cdi->options |= CDO_LOCK; | |
3593 | else if (!lockdoor) | |
3594 | cdi->options &= ~CDO_LOCK; | |
3595 | if (check_media_type) | |
3596 | cdi->options |= CDO_CHECK_TYPE; | |
3597 | else | |
3598 | cdi->options &= ~CDO_CHECK_TYPE; | |
3599 | } | |
032d8d90 | 3600 | mutex_unlock(&cdrom_mutex); |
1da177e4 LT |
3601 | } |
3602 | ||
90a3b89e | 3603 | static int cdrom_sysctl_handler(struct ctl_table *ctl, int write, |
32927393 | 3604 | void *buffer, size_t *lenp, loff_t *ppos) |
1da177e4 | 3605 | { |
1da177e4 LT |
3606 | int ret; |
3607 | ||
8d65af78 | 3608 | ret = proc_dointvec(ctl, write, buffer, lenp, ppos); |
1da177e4 | 3609 | |
06489b4e | 3610 | if (write) { |
1da177e4 LT |
3611 | |
3612 | /* we only care for 1 or 0. */ | |
06489b4e EB |
3613 | autoclose = !!cdrom_sysctl_settings.autoclose; |
3614 | autoeject = !!cdrom_sysctl_settings.autoeject; | |
3615 | debug = !!cdrom_sysctl_settings.debug; | |
3616 | lockdoor = !!cdrom_sysctl_settings.lock; | |
3617 | check_media_type = !!cdrom_sysctl_settings.check; | |
1da177e4 | 3618 | |
1da177e4 LT |
3619 | /* update the option flags according to the changes. we |
3620 | don't have per device options through sysctl yet, | |
3621 | but we will have and then this will disappear. */ | |
3622 | cdrom_update_settings(); | |
3623 | } | |
3624 | ||
3625 | return ret; | |
3626 | } | |
3627 | ||
3628 | /* Place files in /proc/sys/dev/cdrom */ | |
90a3b89e | 3629 | static struct ctl_table cdrom_table[] = { |
1da177e4 | 3630 | { |
1da177e4 LT |
3631 | .procname = "info", |
3632 | .data = &cdrom_sysctl_settings.info, | |
3633 | .maxlen = CDROM_STR_SIZE, | |
3634 | .mode = 0444, | |
6d456111 | 3635 | .proc_handler = cdrom_sysctl_info, |
1da177e4 LT |
3636 | }, |
3637 | { | |
1da177e4 LT |
3638 | .procname = "autoclose", |
3639 | .data = &cdrom_sysctl_settings.autoclose, | |
3640 | .maxlen = sizeof(int), | |
3641 | .mode = 0644, | |
6d456111 | 3642 | .proc_handler = cdrom_sysctl_handler, |
1da177e4 LT |
3643 | }, |
3644 | { | |
1da177e4 LT |
3645 | .procname = "autoeject", |
3646 | .data = &cdrom_sysctl_settings.autoeject, | |
3647 | .maxlen = sizeof(int), | |
3648 | .mode = 0644, | |
6d456111 | 3649 | .proc_handler = cdrom_sysctl_handler, |
1da177e4 LT |
3650 | }, |
3651 | { | |
1da177e4 LT |
3652 | .procname = "debug", |
3653 | .data = &cdrom_sysctl_settings.debug, | |
3654 | .maxlen = sizeof(int), | |
3655 | .mode = 0644, | |
6d456111 | 3656 | .proc_handler = cdrom_sysctl_handler, |
1da177e4 LT |
3657 | }, |
3658 | { | |
1da177e4 LT |
3659 | .procname = "lock", |
3660 | .data = &cdrom_sysctl_settings.lock, | |
3661 | .maxlen = sizeof(int), | |
3662 | .mode = 0644, | |
6d456111 | 3663 | .proc_handler = cdrom_sysctl_handler, |
1da177e4 LT |
3664 | }, |
3665 | { | |
1da177e4 LT |
3666 | .procname = "check_media", |
3667 | .data = &cdrom_sysctl_settings.check, | |
3668 | .maxlen = sizeof(int), | |
3669 | .mode = 0644, | |
6d456111 | 3670 | .proc_handler = cdrom_sysctl_handler |
1da177e4 | 3671 | }, |
894d2491 | 3672 | { } |
1da177e4 | 3673 | }; |
1da177e4 LT |
3674 | static struct ctl_table_header *cdrom_sysctl_header; |
3675 | ||
3676 | static void cdrom_sysctl_register(void) | |
3677 | { | |
f25191bb | 3678 | static atomic_t initialized = ATOMIC_INIT(0); |
1da177e4 | 3679 | |
f25191bb | 3680 | if (!atomic_add_unless(&initialized, 1, 1)) |
1da177e4 LT |
3681 | return; |
3682 | ||
ad8f7431 | 3683 | cdrom_sysctl_header = register_sysctl("dev/cdrom", cdrom_table); |
1da177e4 LT |
3684 | |
3685 | /* set the defaults */ | |
3686 | cdrom_sysctl_settings.autoclose = autoclose; | |
3687 | cdrom_sysctl_settings.autoeject = autoeject; | |
3688 | cdrom_sysctl_settings.debug = debug; | |
3689 | cdrom_sysctl_settings.lock = lockdoor; | |
3690 | cdrom_sysctl_settings.check = check_media_type; | |
1da177e4 LT |
3691 | } |
3692 | ||
3693 | static void cdrom_sysctl_unregister(void) | |
3694 | { | |
3695 | if (cdrom_sysctl_header) | |
3696 | unregister_sysctl_table(cdrom_sysctl_header); | |
3697 | } | |
3698 | ||
17672cf0 AM |
3699 | #else /* CONFIG_SYSCTL */ |
3700 | ||
3701 | static void cdrom_sysctl_register(void) | |
3702 | { | |
3703 | } | |
3704 | ||
3705 | static void cdrom_sysctl_unregister(void) | |
3706 | { | |
3707 | } | |
3708 | ||
1da177e4 LT |
3709 | #endif /* CONFIG_SYSCTL */ |
3710 | ||
3711 | static int __init cdrom_init(void) | |
3712 | { | |
1da177e4 | 3713 | cdrom_sysctl_register(); |
17672cf0 | 3714 | |
1da177e4 LT |
3715 | return 0; |
3716 | } | |
3717 | ||
3718 | static void __exit cdrom_exit(void) | |
3719 | { | |
e597cd09 | 3720 | pr_info("Uniform CD-ROM driver unloaded\n"); |
1da177e4 | 3721 | cdrom_sysctl_unregister(); |
1da177e4 LT |
3722 | } |
3723 | ||
3724 | module_init(cdrom_init); | |
3725 | module_exit(cdrom_exit); | |
3726 | MODULE_LICENSE("GPL"); |