Commit | Line | Data |
---|---|---|
f30c2269 | 1 | /* linux/drivers/cdrom/cdrom.c |
1da177e4 LT |
2 | Copyright (c) 1996, 1997 David A. van Leeuwen. |
3 | Copyright (c) 1997, 1998 Erik Andersen <andersee@debian.org> | |
4 | Copyright (c) 1998, 1999 Jens Axboe <axboe@image.dk> | |
5 | ||
6 | May be copied or modified under the terms of the GNU General Public | |
7 | License. See linux/COPYING for more information. | |
8 | ||
9 | Uniform CD-ROM driver for Linux. | |
10 | See Documentation/cdrom/cdrom-standard.tex for usage information. | |
11 | ||
12 | The routines in the file provide a uniform interface between the | |
13 | software that uses CD-ROMs and the various low-level drivers that | |
14 | actually talk to the hardware. Suggestions are welcome. | |
15 | Patches that work are more welcome though. ;-) | |
16 | ||
17 | To Do List: | |
18 | ---------------------------------- | |
19 | ||
20 | -- Modify sysctl/proc interface. I plan on having one directory per | |
21 | drive, with entries for outputing general drive information, and sysctl | |
22 | based tunable parameters such as whether the tray should auto-close for | |
23 | that drive. Suggestions (or patches) for this welcome! | |
24 | ||
25 | ||
26 | Revision History | |
27 | ---------------------------------- | |
28 | 1.00 Date Unknown -- David van Leeuwen <david@tm.tno.nl> | |
29 | -- Initial version by David A. van Leeuwen. I don't have a detailed | |
30 | changelog for the 1.x series, David? | |
31 | ||
32 | 2.00 Dec 2, 1997 -- Erik Andersen <andersee@debian.org> | |
25985edc | 33 | -- New maintainer! As David A. van Leeuwen has been too busy to actively |
1da177e4 LT |
34 | maintain and improve this driver, I am now carrying on the torch. If |
35 | you have a problem with this driver, please feel free to contact me. | |
36 | ||
37 | -- Added (rudimentary) sysctl interface. I realize this is really weak | |
38 | right now, and is _very_ badly implemented. It will be improved... | |
39 | ||
40 | -- Modified CDROM_DISC_STATUS so that it is now incorporated into | |
41 | the Uniform CD-ROM driver via the cdrom_count_tracks function. | |
42 | The cdrom_count_tracks function helps resolve some of the false | |
43 | assumptions of the CDROM_DISC_STATUS ioctl, and is also used to check | |
44 | for the correct media type when mounting or playing audio from a CD. | |
45 | ||
46 | -- Remove the calls to verify_area and only use the copy_from_user and | |
47 | copy_to_user stuff, since these calls now provide their own memory | |
48 | checking with the 2.1.x kernels. | |
49 | ||
50 | -- Major update to return codes so that errors from low-level drivers | |
51 | are passed on through (thanks to Gerd Knorr for pointing out this | |
52 | problem). | |
53 | ||
54 | -- Made it so if a function isn't implemented in a low-level driver, | |
55 | ENOSYS is now returned instead of EINVAL. | |
56 | ||
57 | -- Simplified some complex logic so that the source code is easier to read. | |
58 | ||
59 | -- Other stuff I probably forgot to mention (lots of changes). | |
60 | ||
61 | 2.01 to 2.11 Dec 1997-Jan 1998 | |
62 | -- TO-DO! Write changelogs for 2.01 to 2.12. | |
63 | ||
64 | 2.12 Jan 24, 1998 -- Erik Andersen <andersee@debian.org> | |
65 | -- Fixed a bug in the IOCTL_IN and IOCTL_OUT macros. It turns out that | |
66 | copy_*_user does not return EFAULT on error, but instead returns the number | |
67 | of bytes not copied. I was returning whatever non-zero stuff came back from | |
68 | the copy_*_user functions directly, which would result in strange errors. | |
69 | ||
70 | 2.13 July 17, 1998 -- Erik Andersen <andersee@debian.org> | |
71 | -- Fixed a bug in CDROM_SELECT_SPEED where you couldn't lower the speed | |
72 | of the drive. Thanks to Tobias Ringstr|m <tori@prosolvia.se> for pointing | |
73 | this out and providing a simple fix. | |
74 | -- Fixed the procfs-unload-module bug with the fill_inode procfs callback. | |
75 | thanks to Andrea Arcangeli | |
76 | -- Fixed it so that the /proc entry now also shows up when cdrom is | |
77 | compiled into the kernel. Before it only worked when loaded as a module. | |
78 | ||
79 | 2.14 August 17, 1998 -- Erik Andersen <andersee@debian.org> | |
80 | -- Fixed a bug in cdrom_media_changed and handling of reporting that | |
81 | the media had changed for devices that _don't_ implement media_changed. | |
82 | Thanks to Grant R. Guenther <grant@torque.net> for spotting this bug. | |
83 | -- Made a few things more pedanticly correct. | |
84 | ||
85 | 2.50 Oct 19, 1998 - Jens Axboe <axboe@image.dk> | |
86 | -- New maintainers! Erik was too busy to continue the work on the driver, | |
87 | so now Chris Zwilling <chris@cloudnet.com> and Jens Axboe <axboe@image.dk> | |
88 | will do their best to follow in his footsteps | |
89 | ||
90 | 2.51 Dec 20, 1998 - Jens Axboe <axboe@image.dk> | |
91 | -- Check if drive is capable of doing what we ask before blindly changing | |
92 | cdi->options in various ioctl. | |
93 | -- Added version to proc entry. | |
94 | ||
95 | 2.52 Jan 16, 1999 - Jens Axboe <axboe@image.dk> | |
96 | -- Fixed an error in open_for_data where we would sometimes not return | |
97 | the correct error value. Thanks Huba Gaspar <huba@softcell.hu>. | |
98 | -- Fixed module usage count - usage was based on /proc/sys/dev | |
99 | instead of /proc/sys/dev/cdrom. This could lead to an oops when other | |
100 | modules had entries in dev. Feb 02 - real bug was in sysctl.c where | |
101 | dev would be removed even though it was used. cdrom.c just illuminated | |
102 | that bug. | |
103 | ||
104 | 2.53 Feb 22, 1999 - Jens Axboe <axboe@image.dk> | |
105 | -- Fixup of several ioctl calls, in particular CDROM_SET_OPTIONS has | |
106 | been "rewritten" because capabilities and options aren't in sync. They | |
107 | should be... | |
108 | -- Added CDROM_LOCKDOOR ioctl. Locks the door and keeps it that way. | |
109 | -- Added CDROM_RESET ioctl. | |
110 | -- Added CDROM_DEBUG ioctl. Enable debug messages on-the-fly. | |
111 | -- Added CDROM_GET_CAPABILITY ioctl. This relieves userspace programs | |
112 | from parsing /proc/sys/dev/cdrom/info. | |
113 | ||
114 | 2.54 Mar 15, 1999 - Jens Axboe <axboe@image.dk> | |
115 | -- Check capability mask from low level driver when counting tracks as | |
116 | per suggestion from Corey J. Scotts <cstotts@blue.weeg.uiowa.edu>. | |
117 | ||
118 | 2.55 Apr 25, 1999 - Jens Axboe <axboe@image.dk> | |
119 | -- autoclose was mistakenly checked against CDC_OPEN_TRAY instead of | |
120 | CDC_CLOSE_TRAY. | |
121 | -- proc info didn't mask against capabilities mask. | |
122 | ||
123 | 3.00 Aug 5, 1999 - Jens Axboe <axboe@image.dk> | |
124 | -- Unified audio ioctl handling across CD-ROM drivers. A lot of the | |
125 | code was duplicated before. Drives that support the generic packet | |
126 | interface are now being fed packets from here instead. | |
127 | -- First attempt at adding support for MMC2 commands - for DVD and | |
128 | CD-R(W) drives. Only the DVD parts are in now - the interface used is | |
129 | the same as for the audio ioctls. | |
130 | -- ioctl cleanups. if a drive couldn't play audio, it didn't get | |
131 | a change to perform device specific ioctls as well. | |
132 | -- Defined CDROM_CAN(CDC_XXX) for checking the capabilities. | |
133 | -- Put in sysctl files for autoclose, autoeject, check_media, debug, | |
134 | and lock. | |
135 | -- /proc/sys/dev/cdrom/info has been updated to also contain info about | |
136 | CD-Rx and DVD capabilities. | |
137 | -- Now default to checking media type. | |
138 | -- CDROM_SEND_PACKET ioctl added. The infrastructure was in place for | |
139 | doing this anyway, with the generic_packet addition. | |
140 | ||
141 | 3.01 Aug 6, 1999 - Jens Axboe <axboe@image.dk> | |
142 | -- Fix up the sysctl handling so that the option flags get set | |
143 | correctly. | |
144 | -- Fix up ioctl handling so the device specific ones actually get | |
145 | called :). | |
146 | ||
147 | 3.02 Aug 8, 1999 - Jens Axboe <axboe@image.dk> | |
148 | -- Fixed volume control on SCSI drives (or others with longer audio | |
149 | page). | |
150 | -- Fixed a couple of DVD minors. Thanks to Andrew T. Veliath | |
151 | <andrewtv@usa.net> for telling me and for having defined the various | |
152 | DVD structures and ioctls in the first place! He designed the original | |
153 | DVD patches for ide-cd and while I rearranged and unified them, the | |
154 | interface is still the same. | |
155 | ||
156 | 3.03 Sep 1, 1999 - Jens Axboe <axboe@image.dk> | |
157 | -- Moved the rest of the audio ioctls from the CD-ROM drivers here. Only | |
158 | CDROMREADTOCENTRY and CDROMREADTOCHDR are left. | |
159 | -- Moved the CDROMREADxxx ioctls in here. | |
160 | -- Defined the cdrom_get_last_written and cdrom_get_next_block as ioctls | |
161 | and exported functions. | |
162 | -- Erik Andersen <andersen@xmission.com> modified all SCMD_ commands | |
163 | to now read GPCMD_ for the new generic packet interface. All low level | |
164 | drivers are updated as well. | |
165 | -- Various other cleanups. | |
166 | ||
167 | 3.04 Sep 12, 1999 - Jens Axboe <axboe@image.dk> | |
168 | -- Fixed a couple of possible memory leaks (if an operation failed and | |
169 | we didn't free the buffer before returning the error). | |
170 | -- Integrated Uniform CD Changer handling from Richard Sharman | |
171 | <rsharman@pobox.com>. | |
172 | -- Defined CD_DVD and CD_CHANGER log levels. | |
173 | -- Fixed the CDROMREADxxx ioctls. | |
174 | -- CDROMPLAYTRKIND uses the GPCMD_PLAY_AUDIO_MSF command - too few | |
175 | drives supported it. We lose the index part, however. | |
176 | -- Small modifications to accommodate opens of /dev/hdc1, required | |
177 | for ide-cd to handle multisession discs. | |
178 | -- Export cdrom_mode_sense and cdrom_mode_select. | |
179 | -- init_cdrom_command() for setting up a cgc command. | |
180 | ||
181 | 3.05 Oct 24, 1999 - Jens Axboe <axboe@image.dk> | |
182 | -- Changed the interface for CDROM_SEND_PACKET. Before it was virtually | |
183 | impossible to send the drive data in a sensible way. | |
184 | -- Lowered stack usage in mmc_ioctl(), dvd_read_disckey(), and | |
185 | dvd_read_manufact. | |
186 | -- Added setup of write mode for packet writing. | |
187 | -- Fixed CDDA ripping with cdda2wav - accept much larger requests of | |
188 | number of frames and split the reads in blocks of 8. | |
189 | ||
190 | 3.06 Dec 13, 1999 - Jens Axboe <axboe@image.dk> | |
191 | -- Added support for changing the region of DVD drives. | |
192 | -- Added sense data to generic command. | |
193 | ||
194 | 3.07 Feb 2, 2000 - Jens Axboe <axboe@suse.de> | |
195 | -- Do same "read header length" trick in cdrom_get_disc_info() as | |
196 | we do in cdrom_get_track_info() -- some drive don't obey specs and | |
197 | fail if they can't supply the full Mt Fuji size table. | |
198 | -- Deleted stuff related to setting up write modes. It has a different | |
199 | home now. | |
200 | -- Clear header length in mode_select unconditionally. | |
201 | -- Removed the register_disk() that was added, not needed here. | |
202 | ||
203 | 3.08 May 1, 2000 - Jens Axboe <axboe@suse.de> | |
204 | -- Fix direction flag in setup_send_key and setup_report_key. This | |
205 | gave some SCSI adapters problems. | |
206 | -- Always return -EROFS for write opens | |
207 | -- Convert to module_init/module_exit style init and remove some | |
208 | of the #ifdef MODULE stuff | |
209 | -- Fix several dvd errors - DVD_LU_SEND_ASF should pass agid, | |
210 | DVD_HOST_SEND_RPC_STATE did not set buffer size in cdb, and | |
211 | dvd_do_auth passed uninitialized data to drive because init_cdrom_command | |
212 | did not clear a 0 sized buffer. | |
213 | ||
214 | 3.09 May 12, 2000 - Jens Axboe <axboe@suse.de> | |
215 | -- Fix Video-CD on SCSI drives that don't support READ_CD command. In | |
216 | that case switch block size and issue plain READ_10 again, then switch | |
217 | back. | |
218 | ||
219 | 3.10 Jun 10, 2000 - Jens Axboe <axboe@suse.de> | |
220 | -- Fix volume control on CD's - old SCSI-II drives now use their own | |
221 | code, as doing MODE6 stuff in here is really not my intention. | |
222 | -- Use READ_DISC_INFO for more reliable end-of-disc. | |
223 | ||
224 | 3.11 Jun 12, 2000 - Jens Axboe <axboe@suse.de> | |
225 | -- Fix bug in getting rpc phase 2 region info. | |
226 | -- Reinstate "correct" CDROMPLAYTRKIND | |
227 | ||
228 | 3.12 Oct 18, 2000 - Jens Axboe <axboe@suse.de> | |
229 | -- Use quiet bit on packet commands not known to work | |
230 | ||
231 | 3.20 Dec 17, 2003 - Jens Axboe <axboe@suse.de> | |
232 | -- Various fixes and lots of cleanups not listed :-) | |
233 | -- Locking fixes | |
234 | -- Mt Rainier support | |
235 | -- DVD-RAM write open fixes | |
236 | ||
237 | Nov 5 2001, Aug 8 2002. Modified by Andy Polyakov | |
238 | <appro@fy.chalmers.se> to support MMC-3 compliant DVD+RW units. | |
239 | ||
240 | Modified by Nigel Kukard <nkukard@lbsd.net> - support DVD+RW | |
241 | 2.4.x patch by Andy Polyakov <appro@fy.chalmers.se> | |
242 | ||
243 | -------------------------------------------------------------------------*/ | |
244 | ||
e597cd09 JP |
245 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
246 | ||
1da177e4 LT |
247 | #define REVISION "Revision: 3.20" |
248 | #define VERSION "Id: cdrom.c 3.20 2003/12/17" | |
249 | ||
250 | /* I use an error-log mask to give fine grain control over the type of | |
251 | messages dumped to the system logs. The available masks include: */ | |
252 | #define CD_NOTHING 0x0 | |
253 | #define CD_WARNING 0x1 | |
254 | #define CD_REG_UNREG 0x2 | |
255 | #define CD_DO_IOCTL 0x4 | |
256 | #define CD_OPEN 0x8 | |
257 | #define CD_CLOSE 0x10 | |
258 | #define CD_COUNT_TRACKS 0x20 | |
259 | #define CD_CHANGER 0x40 | |
260 | #define CD_DVD 0x80 | |
261 | ||
262 | /* Define this to remove _all_ the debugging messages */ | |
263 | /* #define ERRLOGMASK CD_NOTHING */ | |
264 | #define ERRLOGMASK CD_WARNING | |
265 | /* #define ERRLOGMASK (CD_WARNING|CD_OPEN|CD_COUNT_TRACKS|CD_CLOSE) */ | |
266 | /* #define ERRLOGMASK (CD_WARNING|CD_REG_UNREG|CD_DO_IOCTL|CD_OPEN|CD_CLOSE|CD_COUNT_TRACKS) */ | |
267 | ||
1da177e4 LT |
268 | #include <linux/module.h> |
269 | #include <linux/fs.h> | |
270 | #include <linux/buffer_head.h> | |
271 | #include <linux/major.h> | |
272 | #include <linux/types.h> | |
273 | #include <linux/errno.h> | |
274 | #include <linux/kernel.h> | |
275 | #include <linux/mm.h> | |
276 | #include <linux/slab.h> | |
277 | #include <linux/cdrom.h> | |
278 | #include <linux/sysctl.h> | |
279 | #include <linux/proc_fs.h> | |
280 | #include <linux/blkpg.h> | |
281 | #include <linux/init.h> | |
282 | #include <linux/fcntl.h> | |
283 | #include <linux/blkdev.h> | |
284 | #include <linux/times.h> | |
285 | ||
286 | #include <asm/uaccess.h> | |
287 | ||
288 | /* used to tell the module to turn on full debugging messages */ | |
289 | static int debug; | |
290 | /* used to keep tray locked at all times */ | |
291 | static int keeplocked; | |
292 | /* default compatibility mode */ | |
293 | static int autoclose=1; | |
294 | static int autoeject; | |
295 | static int lockdoor = 1; | |
296 | /* will we ever get to use this... sigh. */ | |
297 | static int check_media_type; | |
298 | /* automatically restart mrw format */ | |
299 | static int mrw_format_restart = 1; | |
300 | module_param(debug, bool, 0); | |
301 | module_param(autoclose, bool, 0); | |
302 | module_param(autoeject, bool, 0); | |
303 | module_param(lockdoor, bool, 0); | |
304 | module_param(check_media_type, bool, 0); | |
305 | module_param(mrw_format_restart, bool, 0); | |
306 | ||
554988d6 | 307 | static DEFINE_MUTEX(cdrom_mutex); |
1da177e4 LT |
308 | |
309 | static const char *mrw_format_status[] = { | |
310 | "not mrw", | |
311 | "bgformat inactive", | |
312 | "bgformat active", | |
313 | "mrw complete", | |
314 | }; | |
315 | ||
316 | static const char *mrw_address_space[] = { "DMA", "GAA" }; | |
317 | ||
318 | #if (ERRLOGMASK!=CD_NOTHING) | |
e597cd09 JP |
319 | #define cdinfo(type, fmt, args...) \ |
320 | do { \ | |
321 | if ((ERRLOGMASK & type) || debug == 1) \ | |
322 | pr_info(fmt, ##args); \ | |
323 | } while (0) | |
1da177e4 | 324 | #else |
e597cd09 JP |
325 | #define cdinfo(type, fmt, args...) \ |
326 | do { \ | |
327 | if (0 && (ERRLOGMASK & type) || debug == 1) \ | |
328 | pr_info(fmt, ##args); \ | |
329 | } while (0) | |
1da177e4 LT |
330 | #endif |
331 | ||
332 | /* These are used to simplify getting data in from and back to user land */ | |
333 | #define IOCTL_IN(arg, type, in) \ | |
334 | if (copy_from_user(&(in), (type __user *) (arg), sizeof (in))) \ | |
335 | return -EFAULT; | |
336 | ||
337 | #define IOCTL_OUT(arg, type, out) \ | |
338 | if (copy_to_user((type __user *) (arg), &(out), sizeof (out))) \ | |
339 | return -EFAULT; | |
340 | ||
341 | /* The (cdo->capability & ~cdi->mask & CDC_XXX) construct was used in | |
342 | a lot of places. This macro makes the code more clear. */ | |
343 | #define CDROM_CAN(type) (cdi->ops->capability & ~cdi->mask & (type)) | |
344 | ||
345 | /* used in the audio ioctls */ | |
346 | #define CHECKAUDIO if ((ret=check_for_audio_disc(cdi, cdo))) return ret | |
347 | ||
2e11c207 JA |
348 | /* |
349 | * Another popular OS uses 7 seconds as the hard timeout for default | |
350 | * commands, so it is a good choice for us as well. | |
351 | */ | |
352 | #define CDROM_DEF_TIMEOUT (7 * HZ) | |
353 | ||
1da177e4 LT |
354 | /* Not-exported routines. */ |
355 | static int open_for_data(struct cdrom_device_info * cdi); | |
356 | static int check_for_audio_disc(struct cdrom_device_info * cdi, | |
357 | struct cdrom_device_ops * cdo); | |
358 | static void sanitize_format(union cdrom_addr *addr, | |
359 | u_char * curr, u_char requested); | |
360 | static int mmc_ioctl(struct cdrom_device_info *cdi, unsigned int cmd, | |
361 | unsigned long arg); | |
362 | ||
363 | int cdrom_get_last_written(struct cdrom_device_info *, long *); | |
364 | static int cdrom_get_next_writable(struct cdrom_device_info *, long *); | |
365 | static void cdrom_count_tracks(struct cdrom_device_info *, tracktype*); | |
366 | ||
367 | static int cdrom_mrw_exit(struct cdrom_device_info *cdi); | |
368 | ||
369 | static int cdrom_get_disc_info(struct cdrom_device_info *cdi, disc_information *di); | |
370 | ||
1da177e4 | 371 | static void cdrom_sysctl_register(void); |
17672cf0 | 372 | |
7fd097d4 | 373 | static LIST_HEAD(cdrom_list); |
1da177e4 LT |
374 | |
375 | static int cdrom_dummy_generic_packet(struct cdrom_device_info *cdi, | |
376 | struct packet_command *cgc) | |
377 | { | |
378 | if (cgc->sense) { | |
379 | cgc->sense->sense_key = 0x05; | |
380 | cgc->sense->asc = 0x20; | |
381 | cgc->sense->ascq = 0x00; | |
382 | } | |
383 | ||
384 | cgc->stat = -EIO; | |
385 | return -EIO; | |
386 | } | |
387 | ||
388 | /* This macro makes sure we don't have to check on cdrom_device_ops | |
389 | * existence in the run-time routines below. Change_capability is a | |
390 | * hack to have the capability flags defined const, while we can still | |
391 | * change it here without gcc complaining at every line. | |
392 | */ | |
393 | #define ENSURE(call, bits) if (cdo->call == NULL) *change_capability &= ~(bits) | |
394 | ||
395 | int register_cdrom(struct cdrom_device_info *cdi) | |
396 | { | |
397 | static char banner_printed; | |
398 | struct cdrom_device_ops *cdo = cdi->ops; | |
399 | int *change_capability = (int *)&cdo->capability; /* hack */ | |
400 | ||
401 | cdinfo(CD_OPEN, "entering register_cdrom\n"); | |
402 | ||
403 | if (cdo->open == NULL || cdo->release == NULL) | |
3c3f4e01 | 404 | return -EINVAL; |
1da177e4 | 405 | if (!banner_printed) { |
e597cd09 | 406 | pr_info("Uniform CD-ROM driver " REVISION "\n"); |
1da177e4 | 407 | banner_printed = 1; |
1da177e4 | 408 | cdrom_sysctl_register(); |
1da177e4 LT |
409 | } |
410 | ||
411 | ENSURE(drive_status, CDC_DRIVE_STATUS ); | |
b8cf0e0e SA |
412 | if (cdo->check_events == NULL && cdo->media_changed == NULL) |
413 | *change_capability = ~(CDC_MEDIA_CHANGED | CDC_SELECT_DISC); | |
1da177e4 LT |
414 | ENSURE(tray_move, CDC_CLOSE_TRAY | CDC_OPEN_TRAY); |
415 | ENSURE(lock_door, CDC_LOCK); | |
416 | ENSURE(select_speed, CDC_SELECT_SPEED); | |
417 | ENSURE(get_last_session, CDC_MULTI_SESSION); | |
418 | ENSURE(get_mcn, CDC_MCN); | |
419 | ENSURE(reset, CDC_RESET); | |
1da177e4 LT |
420 | ENSURE(generic_packet, CDC_GENERIC_PACKET); |
421 | cdi->mc_flags = 0; | |
422 | cdo->n_minors = 0; | |
423 | cdi->options = CDO_USE_FFLAGS; | |
424 | ||
425 | if (autoclose==1 && CDROM_CAN(CDC_CLOSE_TRAY)) | |
426 | cdi->options |= (int) CDO_AUTO_CLOSE; | |
427 | if (autoeject==1 && CDROM_CAN(CDC_OPEN_TRAY)) | |
428 | cdi->options |= (int) CDO_AUTO_EJECT; | |
429 | if (lockdoor==1) | |
430 | cdi->options |= (int) CDO_LOCK; | |
431 | if (check_media_type==1) | |
432 | cdi->options |= (int) CDO_CHECK_TYPE; | |
433 | ||
434 | if (CDROM_CAN(CDC_MRW_W)) | |
435 | cdi->exit = cdrom_mrw_exit; | |
436 | ||
437 | if (cdi->disk) | |
438 | cdi->cdda_method = CDDA_BPC_FULL; | |
439 | else | |
440 | cdi->cdda_method = CDDA_OLD; | |
441 | ||
442 | if (!cdo->generic_packet) | |
443 | cdo->generic_packet = cdrom_dummy_generic_packet; | |
444 | ||
445 | cdinfo(CD_REG_UNREG, "drive \"/dev/%s\" registered\n", cdi->name); | |
554988d6 | 446 | mutex_lock(&cdrom_mutex); |
7fd097d4 | 447 | list_add(&cdi->list, &cdrom_list); |
554988d6 | 448 | mutex_unlock(&cdrom_mutex); |
1da177e4 LT |
449 | return 0; |
450 | } | |
451 | #undef ENSURE | |
452 | ||
0a0c4114 | 453 | void unregister_cdrom(struct cdrom_device_info *cdi) |
1da177e4 | 454 | { |
1da177e4 LT |
455 | cdinfo(CD_OPEN, "entering unregister_cdrom\n"); |
456 | ||
554988d6 | 457 | mutex_lock(&cdrom_mutex); |
7fd097d4 | 458 | list_del(&cdi->list); |
554988d6 | 459 | mutex_unlock(&cdrom_mutex); |
1da177e4 LT |
460 | |
461 | if (cdi->exit) | |
462 | cdi->exit(cdi); | |
463 | ||
464 | cdi->ops->n_minors--; | |
465 | cdinfo(CD_REG_UNREG, "drive \"/dev/%s\" unregistered\n", cdi->name); | |
1da177e4 LT |
466 | } |
467 | ||
468 | int cdrom_get_media_event(struct cdrom_device_info *cdi, | |
469 | struct media_event_desc *med) | |
470 | { | |
471 | struct packet_command cgc; | |
fce53847 FT |
472 | unsigned char buffer[8]; |
473 | struct event_header *eh = (struct event_header *) buffer; | |
1da177e4 | 474 | |
fce53847 | 475 | init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_READ); |
1da177e4 LT |
476 | cgc.cmd[0] = GPCMD_GET_EVENT_STATUS_NOTIFICATION; |
477 | cgc.cmd[1] = 1; /* IMMED */ | |
478 | cgc.cmd[4] = 1 << 4; /* media event */ | |
fce53847 | 479 | cgc.cmd[8] = sizeof(buffer); |
1da177e4 LT |
480 | cgc.quiet = 1; |
481 | ||
482 | if (cdi->ops->generic_packet(cdi, &cgc)) | |
fce53847 | 483 | return 1; |
1da177e4 LT |
484 | |
485 | if (be16_to_cpu(eh->data_len) < sizeof(*med)) | |
fce53847 | 486 | return 1; |
1da177e4 LT |
487 | |
488 | if (eh->nea || eh->notification_class != 0x4) | |
fce53847 | 489 | return 1; |
1da177e4 | 490 | |
fce53847 FT |
491 | memcpy(med, &buffer[sizeof(*eh)], sizeof(*med)); |
492 | return 0; | |
1da177e4 LT |
493 | } |
494 | ||
495 | /* | |
496 | * the first prototypes used 0x2c as the page code for the mrw mode page, | |
497 | * subsequently this was changed to 0x03. probe the one used by this drive | |
498 | */ | |
499 | static int cdrom_mrw_probe_pc(struct cdrom_device_info *cdi) | |
500 | { | |
501 | struct packet_command cgc; | |
fce53847 | 502 | char buffer[16]; |
1da177e4 | 503 | |
fce53847 | 504 | init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_READ); |
1da177e4 LT |
505 | |
506 | cgc.timeout = HZ; | |
507 | cgc.quiet = 1; | |
508 | ||
509 | if (!cdrom_mode_sense(cdi, &cgc, MRW_MODE_PC, 0)) { | |
510 | cdi->mrw_mode_page = MRW_MODE_PC; | |
fce53847 | 511 | return 0; |
1da177e4 LT |
512 | } else if (!cdrom_mode_sense(cdi, &cgc, MRW_MODE_PC_PRE1, 0)) { |
513 | cdi->mrw_mode_page = MRW_MODE_PC_PRE1; | |
fce53847 | 514 | return 0; |
1da177e4 | 515 | } |
fce53847 FT |
516 | |
517 | return 1; | |
1da177e4 LT |
518 | } |
519 | ||
520 | static int cdrom_is_mrw(struct cdrom_device_info *cdi, int *write) | |
521 | { | |
522 | struct packet_command cgc; | |
523 | struct mrw_feature_desc *mfd; | |
fce53847 | 524 | unsigned char buffer[16]; |
1da177e4 LT |
525 | int ret; |
526 | ||
527 | *write = 0; | |
528 | ||
fce53847 | 529 | init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_READ); |
1da177e4 LT |
530 | |
531 | cgc.cmd[0] = GPCMD_GET_CONFIGURATION; | |
532 | cgc.cmd[3] = CDF_MRW; | |
fce53847 | 533 | cgc.cmd[8] = sizeof(buffer); |
1da177e4 LT |
534 | cgc.quiet = 1; |
535 | ||
536 | if ((ret = cdi->ops->generic_packet(cdi, &cgc))) | |
fce53847 | 537 | return ret; |
1da177e4 LT |
538 | |
539 | mfd = (struct mrw_feature_desc *)&buffer[sizeof(struct feature_header)]; | |
fce53847 FT |
540 | if (be16_to_cpu(mfd->feature_code) != CDF_MRW) |
541 | return 1; | |
1da177e4 LT |
542 | *write = mfd->write; |
543 | ||
544 | if ((ret = cdrom_mrw_probe_pc(cdi))) { | |
545 | *write = 0; | |
fce53847 | 546 | return ret; |
1da177e4 | 547 | } |
fce53847 FT |
548 | |
549 | return 0; | |
1da177e4 LT |
550 | } |
551 | ||
552 | static int cdrom_mrw_bgformat(struct cdrom_device_info *cdi, int cont) | |
553 | { | |
554 | struct packet_command cgc; | |
fce53847 | 555 | unsigned char buffer[12]; |
1da177e4 LT |
556 | int ret; |
557 | ||
e597cd09 | 558 | pr_info("%sstarting format\n", cont ? "Re" : ""); |
1da177e4 LT |
559 | |
560 | /* | |
561 | * FmtData bit set (bit 4), format type is 1 | |
562 | */ | |
fce53847 | 563 | init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_WRITE); |
1da177e4 LT |
564 | cgc.cmd[0] = GPCMD_FORMAT_UNIT; |
565 | cgc.cmd[1] = (1 << 4) | 1; | |
566 | ||
567 | cgc.timeout = 5 * 60 * HZ; | |
568 | ||
569 | /* | |
570 | * 4 byte format list header, 8 byte format list descriptor | |
571 | */ | |
572 | buffer[1] = 1 << 1; | |
573 | buffer[3] = 8; | |
574 | ||
575 | /* | |
576 | * nr_blocks field | |
577 | */ | |
578 | buffer[4] = 0xff; | |
579 | buffer[5] = 0xff; | |
580 | buffer[6] = 0xff; | |
581 | buffer[7] = 0xff; | |
582 | ||
583 | buffer[8] = 0x24 << 2; | |
584 | buffer[11] = cont; | |
585 | ||
586 | ret = cdi->ops->generic_packet(cdi, &cgc); | |
587 | if (ret) | |
e597cd09 | 588 | pr_info("bgformat failed\n"); |
1da177e4 LT |
589 | |
590 | return ret; | |
591 | } | |
592 | ||
593 | static int cdrom_mrw_bgformat_susp(struct cdrom_device_info *cdi, int immed) | |
594 | { | |
595 | struct packet_command cgc; | |
596 | ||
597 | init_cdrom_command(&cgc, NULL, 0, CGC_DATA_NONE); | |
598 | cgc.cmd[0] = GPCMD_CLOSE_TRACK; | |
599 | ||
600 | /* | |
601 | * Session = 1, Track = 0 | |
602 | */ | |
603 | cgc.cmd[1] = !!immed; | |
604 | cgc.cmd[2] = 1 << 1; | |
605 | ||
606 | cgc.timeout = 5 * 60 * HZ; | |
607 | ||
608 | return cdi->ops->generic_packet(cdi, &cgc); | |
609 | } | |
610 | ||
611 | static int cdrom_flush_cache(struct cdrom_device_info *cdi) | |
612 | { | |
613 | struct packet_command cgc; | |
614 | ||
615 | init_cdrom_command(&cgc, NULL, 0, CGC_DATA_NONE); | |
616 | cgc.cmd[0] = GPCMD_FLUSH_CACHE; | |
617 | ||
618 | cgc.timeout = 5 * 60 * HZ; | |
619 | ||
620 | return cdi->ops->generic_packet(cdi, &cgc); | |
621 | } | |
622 | ||
623 | static int cdrom_mrw_exit(struct cdrom_device_info *cdi) | |
624 | { | |
625 | disc_information di; | |
626 | int ret; | |
627 | ||
628 | ret = cdrom_get_disc_info(cdi, &di); | |
629 | if (ret < 0 || ret < (int)offsetof(typeof(di),disc_type)) | |
630 | return 1; | |
631 | ||
632 | ret = 0; | |
633 | if (di.mrw_status == CDM_MRW_BGFORMAT_ACTIVE) { | |
e597cd09 | 634 | pr_info("issuing MRW background format suspend\n"); |
1da177e4 LT |
635 | ret = cdrom_mrw_bgformat_susp(cdi, 0); |
636 | } | |
637 | ||
7da21a02 | 638 | if (!ret && cdi->media_written) |
1da177e4 LT |
639 | ret = cdrom_flush_cache(cdi); |
640 | ||
641 | return ret; | |
642 | } | |
643 | ||
644 | static int cdrom_mrw_set_lba_space(struct cdrom_device_info *cdi, int space) | |
645 | { | |
646 | struct packet_command cgc; | |
647 | struct mode_page_header *mph; | |
fce53847 | 648 | char buffer[16]; |
1da177e4 LT |
649 | int ret, offset, size; |
650 | ||
fce53847 | 651 | init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_READ); |
1da177e4 | 652 | |
fce53847 FT |
653 | cgc.buffer = buffer; |
654 | cgc.buflen = sizeof(buffer); | |
1da177e4 LT |
655 | |
656 | if ((ret = cdrom_mode_sense(cdi, &cgc, cdi->mrw_mode_page, 0))) | |
fce53847 | 657 | return ret; |
1da177e4 LT |
658 | |
659 | mph = (struct mode_page_header *) buffer; | |
660 | offset = be16_to_cpu(mph->desc_length); | |
661 | size = be16_to_cpu(mph->mode_data_length) + 2; | |
662 | ||
663 | buffer[offset + 3] = space; | |
664 | cgc.buflen = size; | |
665 | ||
666 | if ((ret = cdrom_mode_select(cdi, &cgc))) | |
fce53847 | 667 | return ret; |
1da177e4 | 668 | |
e597cd09 JP |
669 | pr_info("%s: mrw address space %s selected\n", |
670 | cdi->name, mrw_address_space[space]); | |
fce53847 | 671 | return 0; |
1da177e4 LT |
672 | } |
673 | ||
674 | static int cdrom_get_random_writable(struct cdrom_device_info *cdi, | |
675 | struct rwrt_feature_desc *rfd) | |
676 | { | |
677 | struct packet_command cgc; | |
fce53847 | 678 | char buffer[24]; |
1da177e4 LT |
679 | int ret; |
680 | ||
fce53847 | 681 | init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_READ); |
1da177e4 LT |
682 | |
683 | cgc.cmd[0] = GPCMD_GET_CONFIGURATION; /* often 0x46 */ | |
684 | cgc.cmd[3] = CDF_RWRT; /* often 0x0020 */ | |
fce53847 | 685 | cgc.cmd[8] = sizeof(buffer); /* often 0x18 */ |
1da177e4 LT |
686 | cgc.quiet = 1; |
687 | ||
688 | if ((ret = cdi->ops->generic_packet(cdi, &cgc))) | |
fce53847 | 689 | return ret; |
1da177e4 LT |
690 | |
691 | memcpy(rfd, &buffer[sizeof(struct feature_header)], sizeof (*rfd)); | |
fce53847 | 692 | return 0; |
1da177e4 LT |
693 | } |
694 | ||
695 | static int cdrom_has_defect_mgt(struct cdrom_device_info *cdi) | |
696 | { | |
697 | struct packet_command cgc; | |
fce53847 | 698 | char buffer[16]; |
56052d52 | 699 | __be16 *feature_code; |
1da177e4 LT |
700 | int ret; |
701 | ||
fce53847 | 702 | init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_READ); |
1da177e4 LT |
703 | |
704 | cgc.cmd[0] = GPCMD_GET_CONFIGURATION; | |
705 | cgc.cmd[3] = CDF_HWDM; | |
fce53847 | 706 | cgc.cmd[8] = sizeof(buffer); |
1da177e4 LT |
707 | cgc.quiet = 1; |
708 | ||
709 | if ((ret = cdi->ops->generic_packet(cdi, &cgc))) | |
fce53847 | 710 | return ret; |
1da177e4 | 711 | |
56052d52 | 712 | feature_code = (__be16 *) &buffer[sizeof(struct feature_header)]; |
1da177e4 | 713 | if (be16_to_cpu(*feature_code) == CDF_HWDM) |
fce53847 FT |
714 | return 0; |
715 | ||
716 | return 1; | |
1da177e4 LT |
717 | } |
718 | ||
719 | ||
720 | static int cdrom_is_random_writable(struct cdrom_device_info *cdi, int *write) | |
721 | { | |
722 | struct rwrt_feature_desc rfd; | |
723 | int ret; | |
724 | ||
725 | *write = 0; | |
726 | ||
727 | if ((ret = cdrom_get_random_writable(cdi, &rfd))) | |
728 | return ret; | |
729 | ||
730 | if (CDF_RWRT == be16_to_cpu(rfd.feature_code)) | |
731 | *write = 1; | |
732 | ||
733 | return 0; | |
734 | } | |
735 | ||
736 | static int cdrom_media_erasable(struct cdrom_device_info *cdi) | |
737 | { | |
738 | disc_information di; | |
739 | int ret; | |
740 | ||
741 | ret = cdrom_get_disc_info(cdi, &di); | |
742 | if (ret < 0 || ret < offsetof(typeof(di), n_first_track)) | |
743 | return -1; | |
744 | ||
745 | return di.erasable; | |
746 | } | |
747 | ||
748 | /* | |
749 | * FIXME: check RO bit | |
750 | */ | |
751 | static int cdrom_dvdram_open_write(struct cdrom_device_info *cdi) | |
752 | { | |
753 | int ret = cdrom_media_erasable(cdi); | |
754 | ||
755 | /* | |
756 | * allow writable open if media info read worked and media is | |
757 | * erasable, _or_ if it fails since not all drives support it | |
758 | */ | |
759 | if (!ret) | |
760 | return 1; | |
761 | ||
762 | return 0; | |
763 | } | |
764 | ||
765 | static int cdrom_mrw_open_write(struct cdrom_device_info *cdi) | |
766 | { | |
767 | disc_information di; | |
768 | int ret; | |
769 | ||
770 | /* | |
771 | * always reset to DMA lba space on open | |
772 | */ | |
773 | if (cdrom_mrw_set_lba_space(cdi, MRW_LBA_DMA)) { | |
e597cd09 | 774 | pr_err("failed setting lba address space\n"); |
1da177e4 LT |
775 | return 1; |
776 | } | |
777 | ||
778 | ret = cdrom_get_disc_info(cdi, &di); | |
779 | if (ret < 0 || ret < offsetof(typeof(di),disc_type)) | |
780 | return 1; | |
781 | ||
782 | if (!di.erasable) | |
783 | return 1; | |
784 | ||
785 | /* | |
786 | * mrw_status | |
787 | * 0 - not MRW formatted | |
788 | * 1 - MRW bgformat started, but not running or complete | |
789 | * 2 - MRW bgformat in progress | |
790 | * 3 - MRW formatting complete | |
791 | */ | |
792 | ret = 0; | |
e597cd09 | 793 | pr_info("open: mrw_status '%s'\n", mrw_format_status[di.mrw_status]); |
1da177e4 LT |
794 | if (!di.mrw_status) |
795 | ret = 1; | |
796 | else if (di.mrw_status == CDM_MRW_BGFORMAT_INACTIVE && | |
797 | mrw_format_restart) | |
798 | ret = cdrom_mrw_bgformat(cdi, 1); | |
799 | ||
800 | return ret; | |
801 | } | |
802 | ||
803 | static int mo_open_write(struct cdrom_device_info *cdi) | |
804 | { | |
805 | struct packet_command cgc; | |
fce53847 | 806 | char buffer[255]; |
1da177e4 LT |
807 | int ret; |
808 | ||
fce53847 | 809 | init_cdrom_command(&cgc, &buffer, 4, CGC_DATA_READ); |
1da177e4 LT |
810 | cgc.quiet = 1; |
811 | ||
812 | /* | |
813 | * obtain write protect information as per | |
814 | * drivers/scsi/sd.c:sd_read_write_protect_flag | |
815 | */ | |
816 | ||
817 | ret = cdrom_mode_sense(cdi, &cgc, GPMODE_ALL_PAGES, 0); | |
818 | if (ret) | |
819 | ret = cdrom_mode_sense(cdi, &cgc, GPMODE_VENDOR_PAGE, 0); | |
820 | if (ret) { | |
821 | cgc.buflen = 255; | |
822 | ret = cdrom_mode_sense(cdi, &cgc, GPMODE_ALL_PAGES, 0); | |
823 | } | |
824 | ||
825 | /* drive gave us no info, let the user go ahead */ | |
fce53847 FT |
826 | if (ret) |
827 | return 0; | |
1da177e4 | 828 | |
fce53847 | 829 | return buffer[3] & 0x80; |
1da177e4 LT |
830 | } |
831 | ||
832 | static int cdrom_ram_open_write(struct cdrom_device_info *cdi) | |
833 | { | |
834 | struct rwrt_feature_desc rfd; | |
835 | int ret; | |
836 | ||
837 | if ((ret = cdrom_has_defect_mgt(cdi))) | |
838 | return ret; | |
839 | ||
840 | if ((ret = cdrom_get_random_writable(cdi, &rfd))) | |
841 | return ret; | |
842 | else if (CDF_RWRT == be16_to_cpu(rfd.feature_code)) | |
843 | ret = !rfd.curr; | |
844 | ||
845 | cdinfo(CD_OPEN, "can open for random write\n"); | |
846 | return ret; | |
847 | } | |
848 | ||
849 | static void cdrom_mmc3_profile(struct cdrom_device_info *cdi) | |
850 | { | |
851 | struct packet_command cgc; | |
fce53847 | 852 | char buffer[32]; |
1da177e4 LT |
853 | int ret, mmc3_profile; |
854 | ||
fce53847 | 855 | init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_READ); |
1da177e4 LT |
856 | |
857 | cgc.cmd[0] = GPCMD_GET_CONFIGURATION; | |
858 | cgc.cmd[1] = 0; | |
859 | cgc.cmd[2] = cgc.cmd[3] = 0; /* Starting Feature Number */ | |
fce53847 | 860 | cgc.cmd[8] = sizeof(buffer); /* Allocation Length */ |
1da177e4 LT |
861 | cgc.quiet = 1; |
862 | ||
863 | if ((ret = cdi->ops->generic_packet(cdi, &cgc))) | |
864 | mmc3_profile = 0xffff; | |
865 | else | |
866 | mmc3_profile = (buffer[6] << 8) | buffer[7]; | |
867 | ||
868 | cdi->mmc3_profile = mmc3_profile; | |
869 | } | |
870 | ||
871 | static int cdrom_is_dvd_rw(struct cdrom_device_info *cdi) | |
872 | { | |
873 | switch (cdi->mmc3_profile) { | |
874 | case 0x12: /* DVD-RAM */ | |
875 | case 0x1A: /* DVD+RW */ | |
876 | return 0; | |
877 | default: | |
878 | return 1; | |
879 | } | |
880 | } | |
881 | ||
882 | /* | |
883 | * returns 0 for ok to open write, non-0 to disallow | |
884 | */ | |
885 | static int cdrom_open_write(struct cdrom_device_info *cdi) | |
886 | { | |
887 | int mrw, mrw_write, ram_write; | |
888 | int ret = 1; | |
889 | ||
890 | mrw = 0; | |
891 | if (!cdrom_is_mrw(cdi, &mrw_write)) | |
892 | mrw = 1; | |
893 | ||
894 | if (CDROM_CAN(CDC_MO_DRIVE)) | |
895 | ram_write = 1; | |
896 | else | |
897 | (void) cdrom_is_random_writable(cdi, &ram_write); | |
898 | ||
899 | if (mrw) | |
900 | cdi->mask &= ~CDC_MRW; | |
901 | else | |
902 | cdi->mask |= CDC_MRW; | |
903 | ||
904 | if (mrw_write) | |
905 | cdi->mask &= ~CDC_MRW_W; | |
906 | else | |
907 | cdi->mask |= CDC_MRW_W; | |
908 | ||
909 | if (ram_write) | |
910 | cdi->mask &= ~CDC_RAM; | |
911 | else | |
912 | cdi->mask |= CDC_RAM; | |
913 | ||
914 | if (CDROM_CAN(CDC_MRW_W)) | |
915 | ret = cdrom_mrw_open_write(cdi); | |
916 | else if (CDROM_CAN(CDC_DVD_RAM)) | |
917 | ret = cdrom_dvdram_open_write(cdi); | |
918 | else if (CDROM_CAN(CDC_RAM) && | |
919 | !CDROM_CAN(CDC_CD_R|CDC_CD_RW|CDC_DVD|CDC_DVD_R|CDC_MRW|CDC_MO_DRIVE)) | |
920 | ret = cdrom_ram_open_write(cdi); | |
921 | else if (CDROM_CAN(CDC_MO_DRIVE)) | |
922 | ret = mo_open_write(cdi); | |
923 | else if (!cdrom_is_dvd_rw(cdi)) | |
924 | ret = 0; | |
925 | ||
926 | return ret; | |
927 | } | |
928 | ||
929 | static void cdrom_dvd_rw_close_write(struct cdrom_device_info *cdi) | |
930 | { | |
931 | struct packet_command cgc; | |
932 | ||
933 | if (cdi->mmc3_profile != 0x1a) { | |
934 | cdinfo(CD_CLOSE, "%s: No DVD+RW\n", cdi->name); | |
935 | return; | |
936 | } | |
937 | ||
938 | if (!cdi->media_written) { | |
939 | cdinfo(CD_CLOSE, "%s: DVD+RW media clean\n", cdi->name); | |
940 | return; | |
941 | } | |
942 | ||
e597cd09 | 943 | pr_info("%s: dirty DVD+RW media, \"finalizing\"\n", cdi->name); |
1da177e4 LT |
944 | |
945 | init_cdrom_command(&cgc, NULL, 0, CGC_DATA_NONE); | |
946 | cgc.cmd[0] = GPCMD_FLUSH_CACHE; | |
947 | cgc.timeout = 30*HZ; | |
948 | cdi->ops->generic_packet(cdi, &cgc); | |
949 | ||
950 | init_cdrom_command(&cgc, NULL, 0, CGC_DATA_NONE); | |
951 | cgc.cmd[0] = GPCMD_CLOSE_TRACK; | |
952 | cgc.timeout = 3000*HZ; | |
953 | cgc.quiet = 1; | |
954 | cdi->ops->generic_packet(cdi, &cgc); | |
955 | ||
956 | init_cdrom_command(&cgc, NULL, 0, CGC_DATA_NONE); | |
957 | cgc.cmd[0] = GPCMD_CLOSE_TRACK; | |
958 | cgc.cmd[2] = 2; /* Close session */ | |
959 | cgc.quiet = 1; | |
960 | cgc.timeout = 3000*HZ; | |
961 | cdi->ops->generic_packet(cdi, &cgc); | |
962 | ||
963 | cdi->media_written = 0; | |
964 | } | |
965 | ||
966 | static int cdrom_close_write(struct cdrom_device_info *cdi) | |
967 | { | |
968 | #if 0 | |
969 | return cdrom_flush_cache(cdi); | |
970 | #else | |
971 | return 0; | |
972 | #endif | |
973 | } | |
974 | ||
975 | /* We use the open-option O_NONBLOCK to indicate that the | |
976 | * purpose of opening is only for subsequent ioctl() calls; no device | |
977 | * integrity checks are performed. | |
978 | * | |
979 | * We hope that all cd-player programs will adopt this convention. It | |
980 | * is in their own interest: device control becomes a lot easier | |
981 | * this way. | |
982 | */ | |
bbc1cc97 | 983 | int cdrom_open(struct cdrom_device_info *cdi, struct block_device *bdev, fmode_t mode) |
1da177e4 LT |
984 | { |
985 | int ret; | |
986 | ||
987 | cdinfo(CD_OPEN, "entering cdrom_open\n"); | |
988 | ||
bf2253a6 TH |
989 | /* open is event synchronization point, check events first */ |
990 | check_disk_change(bdev); | |
991 | ||
1da177e4 LT |
992 | /* if this was a O_NONBLOCK open and we should honor the flags, |
993 | * do a quick open without drive/disc integrity checks. */ | |
994 | cdi->use_count++; | |
bbc1cc97 | 995 | if ((mode & FMODE_NDELAY) && (cdi->options & CDO_USE_FFLAGS)) { |
1da177e4 LT |
996 | ret = cdi->ops->open(cdi, 1); |
997 | } else { | |
998 | ret = open_for_data(cdi); | |
999 | if (ret) | |
1000 | goto err; | |
1001 | cdrom_mmc3_profile(cdi); | |
bbc1cc97 | 1002 | if (mode & FMODE_WRITE) { |
1da177e4 LT |
1003 | ret = -EROFS; |
1004 | if (cdrom_open_write(cdi)) | |
16070428 | 1005 | goto err_release; |
1da177e4 | 1006 | if (!CDROM_CAN(CDC_RAM)) |
16070428 | 1007 | goto err_release; |
1da177e4 LT |
1008 | ret = 0; |
1009 | cdi->media_written = 0; | |
1010 | } | |
1011 | } | |
1012 | ||
1013 | if (ret) | |
1014 | goto err; | |
1015 | ||
1016 | cdinfo(CD_OPEN, "Use count for \"/dev/%s\" now %d\n", | |
1017 | cdi->name, cdi->use_count); | |
1da177e4 | 1018 | return 0; |
16070428 | 1019 | err_release: |
ae3ba4fd AV |
1020 | if (CDROM_CAN(CDC_LOCK) && cdi->options & CDO_LOCK) { |
1021 | cdi->ops->lock_door(cdi, 0); | |
1022 | cdinfo(CD_OPEN, "door unlocked.\n"); | |
1023 | } | |
16070428 | 1024 | cdi->ops->release(cdi); |
1da177e4 LT |
1025 | err: |
1026 | cdi->use_count--; | |
1027 | return ret; | |
1028 | } | |
1029 | ||
1030 | static | |
1031 | int open_for_data(struct cdrom_device_info * cdi) | |
1032 | { | |
1033 | int ret; | |
1034 | struct cdrom_device_ops *cdo = cdi->ops; | |
1035 | tracktype tracks; | |
1036 | cdinfo(CD_OPEN, "entering open_for_data\n"); | |
1037 | /* Check if the driver can report drive status. If it can, we | |
1038 | can do clever things. If it can't, well, we at least tried! */ | |
1039 | if (cdo->drive_status != NULL) { | |
1040 | ret = cdo->drive_status(cdi, CDSL_CURRENT); | |
1041 | cdinfo(CD_OPEN, "drive_status=%d\n", ret); | |
1042 | if (ret == CDS_TRAY_OPEN) { | |
1043 | cdinfo(CD_OPEN, "the tray is open...\n"); | |
1044 | /* can/may i close it? */ | |
1045 | if (CDROM_CAN(CDC_CLOSE_TRAY) && | |
1046 | cdi->options & CDO_AUTO_CLOSE) { | |
1047 | cdinfo(CD_OPEN, "trying to close the tray.\n"); | |
1048 | ret=cdo->tray_move(cdi,0); | |
1049 | if (ret) { | |
1050 | cdinfo(CD_OPEN, "bummer. tried to close the tray but failed.\n"); | |
1051 | /* Ignore the error from the low | |
1052 | level driver. We don't care why it | |
1053 | couldn't close the tray. We only care | |
1054 | that there is no disc in the drive, | |
1055 | since that is the _REAL_ problem here.*/ | |
1056 | ret=-ENOMEDIUM; | |
1057 | goto clean_up_and_return; | |
1058 | } | |
1059 | } else { | |
1060 | cdinfo(CD_OPEN, "bummer. this drive can't close the tray.\n"); | |
1061 | ret=-ENOMEDIUM; | |
1062 | goto clean_up_and_return; | |
1063 | } | |
1064 | /* Ok, the door should be closed now.. Check again */ | |
1065 | ret = cdo->drive_status(cdi, CDSL_CURRENT); | |
1066 | if ((ret == CDS_NO_DISC) || (ret==CDS_TRAY_OPEN)) { | |
1067 | cdinfo(CD_OPEN, "bummer. the tray is still not closed.\n"); | |
1068 | cdinfo(CD_OPEN, "tray might not contain a medium.\n"); | |
1069 | ret=-ENOMEDIUM; | |
1070 | goto clean_up_and_return; | |
1071 | } | |
1072 | cdinfo(CD_OPEN, "the tray is now closed.\n"); | |
1073 | } | |
1074 | /* the door should be closed now, check for the disc */ | |
1075 | ret = cdo->drive_status(cdi, CDSL_CURRENT); | |
1076 | if (ret!=CDS_DISC_OK) { | |
1077 | ret = -ENOMEDIUM; | |
1078 | goto clean_up_and_return; | |
1079 | } | |
1080 | } | |
1081 | cdrom_count_tracks(cdi, &tracks); | |
1082 | if (tracks.error == CDS_NO_DISC) { | |
1083 | cdinfo(CD_OPEN, "bummer. no disc.\n"); | |
1084 | ret=-ENOMEDIUM; | |
1085 | goto clean_up_and_return; | |
1086 | } | |
1087 | /* CD-Players which don't use O_NONBLOCK, workman | |
1088 | * for example, need bit CDO_CHECK_TYPE cleared! */ | |
1089 | if (tracks.data==0) { | |
1090 | if (cdi->options & CDO_CHECK_TYPE) { | |
1091 | /* give people a warning shot, now that CDO_CHECK_TYPE | |
1092 | is the default case! */ | |
1093 | cdinfo(CD_OPEN, "bummer. wrong media type.\n"); | |
1094 | cdinfo(CD_WARNING, "pid %d must open device O_NONBLOCK!\n", | |
ba25f9dc | 1095 | (unsigned int)task_pid_nr(current)); |
1da177e4 LT |
1096 | ret=-EMEDIUMTYPE; |
1097 | goto clean_up_and_return; | |
1098 | } | |
1099 | else { | |
1100 | cdinfo(CD_OPEN, "wrong media type, but CDO_CHECK_TYPE not set.\n"); | |
1101 | } | |
1102 | } | |
1103 | ||
1104 | cdinfo(CD_OPEN, "all seems well, opening the device.\n"); | |
1105 | ||
1106 | /* all seems well, we can open the device */ | |
1107 | ret = cdo->open(cdi, 0); /* open for data */ | |
1108 | cdinfo(CD_OPEN, "opening the device gave me %d.\n", ret); | |
1109 | /* After all this careful checking, we shouldn't have problems | |
1110 | opening the device, but we don't want the device locked if | |
1111 | this somehow fails... */ | |
1112 | if (ret) { | |
1113 | cdinfo(CD_OPEN, "open device failed.\n"); | |
1114 | goto clean_up_and_return; | |
1115 | } | |
1116 | if (CDROM_CAN(CDC_LOCK) && (cdi->options & CDO_LOCK)) { | |
1117 | cdo->lock_door(cdi, 1); | |
1118 | cdinfo(CD_OPEN, "door locked.\n"); | |
1119 | } | |
1120 | cdinfo(CD_OPEN, "device opened successfully.\n"); | |
1121 | return ret; | |
1122 | ||
1123 | /* Something failed. Try to unlock the drive, because some drivers | |
1124 | (notably ide-cd) lock the drive after every command. This produced | |
1125 | a nasty bug where after mount failed, the drive would remain locked! | |
1126 | This ensures that the drive gets unlocked after a mount fails. This | |
1127 | is a goto to avoid bloating the driver with redundant code. */ | |
1128 | clean_up_and_return: | |
00d6da9b | 1129 | cdinfo(CD_OPEN, "open failed.\n"); |
1da177e4 LT |
1130 | if (CDROM_CAN(CDC_LOCK) && cdi->options & CDO_LOCK) { |
1131 | cdo->lock_door(cdi, 0); | |
1132 | cdinfo(CD_OPEN, "door unlocked.\n"); | |
1133 | } | |
1134 | return ret; | |
1135 | } | |
1136 | ||
1137 | /* This code is similar to that in open_for_data. The routine is called | |
1138 | whenever an audio play operation is requested. | |
1139 | */ | |
ecb80c6a AB |
1140 | static int check_for_audio_disc(struct cdrom_device_info * cdi, |
1141 | struct cdrom_device_ops * cdo) | |
1da177e4 LT |
1142 | { |
1143 | int ret; | |
1144 | tracktype tracks; | |
1145 | cdinfo(CD_OPEN, "entering check_for_audio_disc\n"); | |
1146 | if (!(cdi->options & CDO_CHECK_TYPE)) | |
1147 | return 0; | |
1148 | if (cdo->drive_status != NULL) { | |
1149 | ret = cdo->drive_status(cdi, CDSL_CURRENT); | |
1150 | cdinfo(CD_OPEN, "drive_status=%d\n", ret); | |
1151 | if (ret == CDS_TRAY_OPEN) { | |
1152 | cdinfo(CD_OPEN, "the tray is open...\n"); | |
1153 | /* can/may i close it? */ | |
1154 | if (CDROM_CAN(CDC_CLOSE_TRAY) && | |
1155 | cdi->options & CDO_AUTO_CLOSE) { | |
1156 | cdinfo(CD_OPEN, "trying to close the tray.\n"); | |
1157 | ret=cdo->tray_move(cdi,0); | |
1158 | if (ret) { | |
1159 | cdinfo(CD_OPEN, "bummer. tried to close tray but failed.\n"); | |
1160 | /* Ignore the error from the low | |
1161 | level driver. We don't care why it | |
1162 | couldn't close the tray. We only care | |
1163 | that there is no disc in the drive, | |
1164 | since that is the _REAL_ problem here.*/ | |
1165 | return -ENOMEDIUM; | |
1166 | } | |
1167 | } else { | |
1168 | cdinfo(CD_OPEN, "bummer. this driver can't close the tray.\n"); | |
1169 | return -ENOMEDIUM; | |
1170 | } | |
1171 | /* Ok, the door should be closed now.. Check again */ | |
1172 | ret = cdo->drive_status(cdi, CDSL_CURRENT); | |
1173 | if ((ret == CDS_NO_DISC) || (ret==CDS_TRAY_OPEN)) { | |
1174 | cdinfo(CD_OPEN, "bummer. the tray is still not closed.\n"); | |
1175 | return -ENOMEDIUM; | |
1176 | } | |
1177 | if (ret!=CDS_DISC_OK) { | |
1178 | cdinfo(CD_OPEN, "bummer. disc isn't ready.\n"); | |
1179 | return -EIO; | |
1180 | } | |
1181 | cdinfo(CD_OPEN, "the tray is now closed.\n"); | |
1182 | } | |
1183 | } | |
1184 | cdrom_count_tracks(cdi, &tracks); | |
1185 | if (tracks.error) | |
1186 | return(tracks.error); | |
1187 | ||
1188 | if (tracks.audio==0) | |
1189 | return -EMEDIUMTYPE; | |
1190 | ||
1191 | return 0; | |
1192 | } | |
1193 | ||
bbc1cc97 | 1194 | void cdrom_release(struct cdrom_device_info *cdi, fmode_t mode) |
1da177e4 LT |
1195 | { |
1196 | struct cdrom_device_ops *cdo = cdi->ops; | |
1197 | int opened_for_data; | |
1198 | ||
35841f70 | 1199 | cdinfo(CD_CLOSE, "entering cdrom_release\n"); |
1da177e4 LT |
1200 | |
1201 | if (cdi->use_count > 0) | |
1202 | cdi->use_count--; | |
35841f70 BP |
1203 | |
1204 | if (cdi->use_count == 0) { | |
1da177e4 | 1205 | cdinfo(CD_CLOSE, "Use count for \"/dev/%s\" now zero\n", cdi->name); |
1da177e4 | 1206 | cdrom_dvd_rw_close_write(cdi); |
35841f70 BP |
1207 | |
1208 | if ((cdo->capability & CDC_LOCK) && !keeplocked) { | |
1209 | cdinfo(CD_CLOSE, "Unlocking door!\n"); | |
1210 | cdo->lock_door(cdi, 0); | |
1211 | } | |
1da177e4 | 1212 | } |
35841f70 | 1213 | |
1da177e4 | 1214 | opened_for_data = !(cdi->options & CDO_USE_FFLAGS) || |
bbc1cc97 | 1215 | !(mode & FMODE_NDELAY); |
1da177e4 LT |
1216 | |
1217 | /* | |
1218 | * flush cache on last write release | |
1219 | */ | |
1220 | if (CDROM_CAN(CDC_RAM) && !cdi->use_count && cdi->for_data) | |
1221 | cdrom_close_write(cdi); | |
1222 | ||
1223 | cdo->release(cdi); | |
1224 | if (cdi->use_count == 0) { /* last process that closes dev*/ | |
1225 | if (opened_for_data && | |
1226 | cdi->options & CDO_AUTO_EJECT && CDROM_CAN(CDC_OPEN_TRAY)) | |
1227 | cdo->tray_move(cdi, 1); | |
1228 | } | |
1da177e4 LT |
1229 | } |
1230 | ||
1231 | static int cdrom_read_mech_status(struct cdrom_device_info *cdi, | |
1232 | struct cdrom_changer_info *buf) | |
1233 | { | |
1234 | struct packet_command cgc; | |
1235 | struct cdrom_device_ops *cdo = cdi->ops; | |
1236 | int length; | |
1237 | ||
1238 | /* | |
1239 | * Sanyo changer isn't spec compliant (doesn't use regular change | |
1240 | * LOAD_UNLOAD command, and it doesn't implement the mech status | |
1241 | * command below | |
1242 | */ | |
1243 | if (cdi->sanyo_slot) { | |
1244 | buf->hdr.nslots = 3; | |
1245 | buf->hdr.curslot = cdi->sanyo_slot == 3 ? 0 : cdi->sanyo_slot; | |
1246 | for (length = 0; length < 3; length++) { | |
1247 | buf->slots[length].disc_present = 1; | |
1248 | buf->slots[length].change = 0; | |
1249 | } | |
1250 | return 0; | |
1251 | } | |
1252 | ||
1253 | length = sizeof(struct cdrom_mechstat_header) + | |
1254 | cdi->capacity * sizeof(struct cdrom_slot); | |
1255 | ||
1256 | init_cdrom_command(&cgc, buf, length, CGC_DATA_READ); | |
1257 | cgc.cmd[0] = GPCMD_MECHANISM_STATUS; | |
1258 | cgc.cmd[8] = (length >> 8) & 0xff; | |
1259 | cgc.cmd[9] = length & 0xff; | |
1260 | return cdo->generic_packet(cdi, &cgc); | |
1261 | } | |
1262 | ||
1263 | static int cdrom_slot_status(struct cdrom_device_info *cdi, int slot) | |
1264 | { | |
1265 | struct cdrom_changer_info *info; | |
1266 | int ret; | |
1267 | ||
1268 | cdinfo(CD_CHANGER, "entering cdrom_slot_status()\n"); | |
1269 | if (cdi->sanyo_slot) | |
1270 | return CDS_NO_INFO; | |
1271 | ||
1272 | info = kmalloc(sizeof(*info), GFP_KERNEL); | |
1273 | if (!info) | |
1274 | return -ENOMEM; | |
1275 | ||
1276 | if ((ret = cdrom_read_mech_status(cdi, info))) | |
1277 | goto out_free; | |
1278 | ||
1279 | if (info->slots[slot].disc_present) | |
1280 | ret = CDS_DISC_OK; | |
1281 | else | |
1282 | ret = CDS_NO_DISC; | |
1283 | ||
1284 | out_free: | |
1285 | kfree(info); | |
1286 | return ret; | |
1287 | } | |
1288 | ||
1289 | /* Return the number of slots for an ATAPI/SCSI cdrom, | |
1290 | * return 1 if not a changer. | |
1291 | */ | |
1292 | int cdrom_number_of_slots(struct cdrom_device_info *cdi) | |
1293 | { | |
1294 | int status; | |
1295 | int nslots = 1; | |
1296 | struct cdrom_changer_info *info; | |
1297 | ||
1298 | cdinfo(CD_CHANGER, "entering cdrom_number_of_slots()\n"); | |
1299 | /* cdrom_read_mech_status requires a valid value for capacity: */ | |
1300 | cdi->capacity = 0; | |
1301 | ||
1302 | info = kmalloc(sizeof(*info), GFP_KERNEL); | |
1303 | if (!info) | |
1304 | return -ENOMEM; | |
1305 | ||
1306 | if ((status = cdrom_read_mech_status(cdi, info)) == 0) | |
1307 | nslots = info->hdr.nslots; | |
1308 | ||
1309 | kfree(info); | |
1310 | return nslots; | |
1311 | } | |
1312 | ||
1313 | ||
1314 | /* If SLOT < 0, unload the current slot. Otherwise, try to load SLOT. */ | |
1315 | static int cdrom_load_unload(struct cdrom_device_info *cdi, int slot) | |
1316 | { | |
1317 | struct packet_command cgc; | |
1318 | ||
1319 | cdinfo(CD_CHANGER, "entering cdrom_load_unload()\n"); | |
1320 | if (cdi->sanyo_slot && slot < 0) | |
1321 | return 0; | |
1322 | ||
1323 | init_cdrom_command(&cgc, NULL, 0, CGC_DATA_NONE); | |
1324 | cgc.cmd[0] = GPCMD_LOAD_UNLOAD; | |
1325 | cgc.cmd[4] = 2 + (slot >= 0); | |
1326 | cgc.cmd[8] = slot; | |
1327 | cgc.timeout = 60 * HZ; | |
1328 | ||
1329 | /* The Sanyo 3 CD changer uses byte 7 of the | |
1330 | GPCMD_TEST_UNIT_READY to command to switch CDs instead of | |
1331 | using the GPCMD_LOAD_UNLOAD opcode. */ | |
1332 | if (cdi->sanyo_slot && -1 < slot) { | |
1333 | cgc.cmd[0] = GPCMD_TEST_UNIT_READY; | |
1334 | cgc.cmd[7] = slot; | |
1335 | cgc.cmd[4] = cgc.cmd[8] = 0; | |
1336 | cdi->sanyo_slot = slot ? slot : 3; | |
1337 | } | |
1338 | ||
1339 | return cdi->ops->generic_packet(cdi, &cgc); | |
1340 | } | |
1341 | ||
1342 | static int cdrom_select_disc(struct cdrom_device_info *cdi, int slot) | |
1343 | { | |
1344 | struct cdrom_changer_info *info; | |
1345 | int curslot; | |
1346 | int ret; | |
1347 | ||
1348 | cdinfo(CD_CHANGER, "entering cdrom_select_disc()\n"); | |
1349 | if (!CDROM_CAN(CDC_SELECT_DISC)) | |
1350 | return -EDRIVE_CANT_DO_THIS; | |
1351 | ||
2d921729 TH |
1352 | if (cdi->ops->check_events) |
1353 | cdi->ops->check_events(cdi, 0, slot); | |
1354 | else | |
1355 | cdi->ops->media_changed(cdi, slot); | |
1da177e4 LT |
1356 | |
1357 | if (slot == CDSL_NONE) { | |
1358 | /* set media changed bits, on both queues */ | |
1359 | cdi->mc_flags = 0x3; | |
1360 | return cdrom_load_unload(cdi, -1); | |
1361 | } | |
1362 | ||
1363 | info = kmalloc(sizeof(*info), GFP_KERNEL); | |
1364 | if (!info) | |
1365 | return -ENOMEM; | |
1366 | ||
1367 | if ((ret = cdrom_read_mech_status(cdi, info))) { | |
1368 | kfree(info); | |
1369 | return ret; | |
1370 | } | |
1371 | ||
1372 | curslot = info->hdr.curslot; | |
1373 | kfree(info); | |
1374 | ||
1375 | if (cdi->use_count > 1 || keeplocked) { | |
1376 | if (slot == CDSL_CURRENT) { | |
1377 | return curslot; | |
1378 | } else { | |
1379 | return -EBUSY; | |
1380 | } | |
1381 | } | |
1382 | ||
1383 | /* Specifying CDSL_CURRENT will attempt to load the currnet slot, | |
1384 | which is useful if it had been previously unloaded. | |
1385 | Whether it can or not, it returns the current slot. | |
1386 | Similarly, if slot happens to be the current one, we still | |
1387 | try and load it. */ | |
1388 | if (slot == CDSL_CURRENT) | |
1389 | slot = curslot; | |
1390 | ||
1391 | /* set media changed bits on both queues */ | |
1392 | cdi->mc_flags = 0x3; | |
1393 | if ((ret = cdrom_load_unload(cdi, slot))) | |
1394 | return ret; | |
1395 | ||
1396 | return slot; | |
1397 | } | |
1398 | ||
2d921729 TH |
1399 | /* |
1400 | * As cdrom implements an extra ioctl consumer for media changed | |
1401 | * event, it needs to buffer ->check_events() output, such that event | |
1402 | * is not lost for both the usual VFS and ioctl paths. | |
1403 | * cdi->{vfs|ioctl}_events are used to buffer pending events for each | |
1404 | * path. | |
1405 | * | |
1406 | * XXX: Locking is non-existent. cdi->ops->check_events() can be | |
1407 | * called in parallel and buffering fields are accessed without any | |
1408 | * exclusion. The original media_changed code had the same problem. | |
1409 | * It might be better to simply deprecate CDROM_MEDIA_CHANGED ioctl | |
1410 | * and remove this cruft altogether. It doesn't have much usefulness | |
1411 | * at this point. | |
1412 | */ | |
1413 | static void cdrom_update_events(struct cdrom_device_info *cdi, | |
1414 | unsigned int clearing) | |
1415 | { | |
1416 | unsigned int events; | |
1417 | ||
1418 | events = cdi->ops->check_events(cdi, clearing, CDSL_CURRENT); | |
1419 | cdi->vfs_events |= events; | |
1420 | cdi->ioctl_events |= events; | |
1421 | } | |
1422 | ||
1423 | unsigned int cdrom_check_events(struct cdrom_device_info *cdi, | |
1424 | unsigned int clearing) | |
1425 | { | |
1426 | unsigned int events; | |
1427 | ||
1428 | cdrom_update_events(cdi, clearing); | |
1429 | events = cdi->vfs_events; | |
1430 | cdi->vfs_events = 0; | |
1431 | return events; | |
1432 | } | |
30a7caab | 1433 | EXPORT_SYMBOL(cdrom_check_events); |
2d921729 | 1434 | |
1da177e4 LT |
1435 | /* We want to make media_changed accessible to the user through an |
1436 | * ioctl. The main problem now is that we must double-buffer the | |
1437 | * low-level implementation, to assure that the VFS and the user both | |
1438 | * see a medium change once. | |
1439 | */ | |
1440 | ||
1441 | static | |
1442 | int media_changed(struct cdrom_device_info *cdi, int queue) | |
1443 | { | |
1444 | unsigned int mask = (1 << (queue & 1)); | |
1445 | int ret = !!(cdi->mc_flags & mask); | |
2d921729 | 1446 | bool changed; |
1da177e4 LT |
1447 | |
1448 | if (!CDROM_CAN(CDC_MEDIA_CHANGED)) | |
2d921729 TH |
1449 | return ret; |
1450 | ||
1da177e4 | 1451 | /* changed since last call? */ |
2d921729 TH |
1452 | if (cdi->ops->check_events) { |
1453 | BUG_ON(!queue); /* shouldn't be called from VFS path */ | |
1454 | cdrom_update_events(cdi, DISK_EVENT_MEDIA_CHANGE); | |
1455 | changed = cdi->ioctl_events & DISK_EVENT_MEDIA_CHANGE; | |
1456 | cdi->ioctl_events = 0; | |
1457 | } else | |
1458 | changed = cdi->ops->media_changed(cdi, CDSL_CURRENT); | |
1459 | ||
1460 | if (changed) { | |
1da177e4 LT |
1461 | cdi->mc_flags = 0x3; /* set bit on both queues */ |
1462 | ret |= 1; | |
1463 | cdi->media_written = 0; | |
1464 | } | |
2d921729 | 1465 | |
1da177e4 LT |
1466 | cdi->mc_flags &= ~mask; /* clear bit */ |
1467 | return ret; | |
1468 | } | |
1469 | ||
1470 | int cdrom_media_changed(struct cdrom_device_info *cdi) | |
1471 | { | |
1472 | /* This talks to the VFS, which doesn't like errors - just 1 or 0. | |
1473 | * Returning "0" is always safe (media hasn't been changed). Do that | |
1474 | * if the low-level cdrom driver dosn't support media changed. */ | |
1475 | if (cdi == NULL || cdi->ops->media_changed == NULL) | |
1476 | return 0; | |
1477 | if (!CDROM_CAN(CDC_MEDIA_CHANGED)) | |
1478 | return 0; | |
1479 | return media_changed(cdi, 0); | |
1480 | } | |
1481 | ||
1482 | /* badly broken, I know. Is due for a fixup anytime. */ | |
1483 | static void cdrom_count_tracks(struct cdrom_device_info *cdi, tracktype* tracks) | |
1484 | { | |
1485 | struct cdrom_tochdr header; | |
1486 | struct cdrom_tocentry entry; | |
1487 | int ret, i; | |
1488 | tracks->data=0; | |
1489 | tracks->audio=0; | |
1490 | tracks->cdi=0; | |
1491 | tracks->xa=0; | |
1492 | tracks->error=0; | |
1493 | cdinfo(CD_COUNT_TRACKS, "entering cdrom_count_tracks\n"); | |
1da177e4 LT |
1494 | /* Grab the TOC header so we can see how many tracks there are */ |
1495 | if ((ret = cdi->ops->audio_ioctl(cdi, CDROMREADTOCHDR, &header))) { | |
1496 | if (ret == -ENOMEDIUM) | |
1497 | tracks->error = CDS_NO_DISC; | |
1498 | else | |
1499 | tracks->error = CDS_NO_INFO; | |
1500 | return; | |
1501 | } | |
1502 | /* check what type of tracks are on this disc */ | |
1503 | entry.cdte_format = CDROM_MSF; | |
1504 | for (i = header.cdth_trk0; i <= header.cdth_trk1; i++) { | |
1505 | entry.cdte_track = i; | |
1506 | if (cdi->ops->audio_ioctl(cdi, CDROMREADTOCENTRY, &entry)) { | |
1507 | tracks->error=CDS_NO_INFO; | |
1508 | return; | |
1509 | } | |
1510 | if (entry.cdte_ctrl & CDROM_DATA_TRACK) { | |
1511 | if (entry.cdte_format == 0x10) | |
1512 | tracks->cdi++; | |
1513 | else if (entry.cdte_format == 0x20) | |
1514 | tracks->xa++; | |
1515 | else | |
1516 | tracks->data++; | |
1517 | } else | |
1518 | tracks->audio++; | |
1519 | cdinfo(CD_COUNT_TRACKS, "track %d: format=%d, ctrl=%d\n", | |
1520 | i, entry.cdte_format, entry.cdte_ctrl); | |
1521 | } | |
1522 | cdinfo(CD_COUNT_TRACKS, "disc has %d tracks: %d=audio %d=data %d=Cd-I %d=XA\n", | |
1523 | header.cdth_trk1, tracks->audio, tracks->data, | |
1524 | tracks->cdi, tracks->xa); | |
1525 | } | |
1526 | ||
1527 | /* Requests to the low-level drivers will /always/ be done in the | |
1528 | following format convention: | |
1529 | ||
1530 | CDROM_LBA: all data-related requests. | |
1531 | CDROM_MSF: all audio-related requests. | |
1532 | ||
1533 | However, a low-level implementation is allowed to refuse this | |
1534 | request, and return information in its own favorite format. | |
1535 | ||
1536 | It doesn't make sense /at all/ to ask for a play_audio in LBA | |
1537 | format, or ask for multi-session info in MSF format. However, for | |
1538 | backward compatibility these format requests will be satisfied, but | |
1539 | the requests to the low-level drivers will be sanitized in the more | |
1540 | meaningful format indicated above. | |
1541 | */ | |
1542 | ||
1543 | static | |
1544 | void sanitize_format(union cdrom_addr *addr, | |
1545 | u_char * curr, u_char requested) | |
1546 | { | |
1547 | if (*curr == requested) | |
1548 | return; /* nothing to be done! */ | |
1549 | if (requested == CDROM_LBA) { | |
1550 | addr->lba = (int) addr->msf.frame + | |
1551 | 75 * (addr->msf.second - 2 + 60 * addr->msf.minute); | |
1552 | } else { /* CDROM_MSF */ | |
1553 | int lba = addr->lba; | |
1554 | addr->msf.frame = lba % 75; | |
1555 | lba /= 75; | |
1556 | lba += 2; | |
1557 | addr->msf.second = lba % 60; | |
1558 | addr->msf.minute = lba / 60; | |
1559 | } | |
1560 | *curr = requested; | |
1561 | } | |
1562 | ||
1563 | void init_cdrom_command(struct packet_command *cgc, void *buf, int len, | |
1564 | int type) | |
1565 | { | |
1566 | memset(cgc, 0, sizeof(struct packet_command)); | |
1567 | if (buf) | |
1568 | memset(buf, 0, len); | |
1569 | cgc->buffer = (char *) buf; | |
1570 | cgc->buflen = len; | |
1571 | cgc->data_direction = type; | |
2e11c207 | 1572 | cgc->timeout = CDROM_DEF_TIMEOUT; |
1da177e4 LT |
1573 | } |
1574 | ||
1575 | /* DVD handling */ | |
1576 | ||
1577 | #define copy_key(dest,src) memcpy((dest), (src), sizeof(dvd_key)) | |
1578 | #define copy_chal(dest,src) memcpy((dest), (src), sizeof(dvd_challenge)) | |
1579 | ||
1580 | static void setup_report_key(struct packet_command *cgc, unsigned agid, unsigned type) | |
1581 | { | |
1582 | cgc->cmd[0] = GPCMD_REPORT_KEY; | |
1583 | cgc->cmd[10] = type | (agid << 6); | |
1584 | switch (type) { | |
1585 | case 0: case 8: case 5: { | |
1586 | cgc->buflen = 8; | |
1587 | break; | |
1588 | } | |
1589 | case 1: { | |
1590 | cgc->buflen = 16; | |
1591 | break; | |
1592 | } | |
1593 | case 2: case 4: { | |
1594 | cgc->buflen = 12; | |
1595 | break; | |
1596 | } | |
1597 | } | |
1598 | cgc->cmd[9] = cgc->buflen; | |
1599 | cgc->data_direction = CGC_DATA_READ; | |
1600 | } | |
1601 | ||
1602 | static void setup_send_key(struct packet_command *cgc, unsigned agid, unsigned type) | |
1603 | { | |
1604 | cgc->cmd[0] = GPCMD_SEND_KEY; | |
1605 | cgc->cmd[10] = type | (agid << 6); | |
1606 | switch (type) { | |
1607 | case 1: { | |
1608 | cgc->buflen = 16; | |
1609 | break; | |
1610 | } | |
1611 | case 3: { | |
1612 | cgc->buflen = 12; | |
1613 | break; | |
1614 | } | |
1615 | case 6: { | |
1616 | cgc->buflen = 8; | |
1617 | break; | |
1618 | } | |
1619 | } | |
1620 | cgc->cmd[9] = cgc->buflen; | |
1621 | cgc->data_direction = CGC_DATA_WRITE; | |
1622 | } | |
1623 | ||
1624 | static int dvd_do_auth(struct cdrom_device_info *cdi, dvd_authinfo *ai) | |
1625 | { | |
1626 | int ret; | |
fce53847 | 1627 | u_char buf[20]; |
1da177e4 LT |
1628 | struct packet_command cgc; |
1629 | struct cdrom_device_ops *cdo = cdi->ops; | |
fce53847 | 1630 | rpc_state_t rpc_state; |
1da177e4 | 1631 | |
fce53847 | 1632 | memset(buf, 0, sizeof(buf)); |
1da177e4 LT |
1633 | init_cdrom_command(&cgc, buf, 0, CGC_DATA_READ); |
1634 | ||
1635 | switch (ai->type) { | |
1636 | /* LU data send */ | |
1637 | case DVD_LU_SEND_AGID: | |
1638 | cdinfo(CD_DVD, "entering DVD_LU_SEND_AGID\n"); | |
1639 | cgc.quiet = 1; | |
1640 | setup_report_key(&cgc, ai->lsa.agid, 0); | |
1641 | ||
1642 | if ((ret = cdo->generic_packet(cdi, &cgc))) | |
fce53847 | 1643 | return ret; |
1da177e4 LT |
1644 | |
1645 | ai->lsa.agid = buf[7] >> 6; | |
1646 | /* Returning data, let host change state */ | |
1647 | break; | |
1648 | ||
1649 | case DVD_LU_SEND_KEY1: | |
1650 | cdinfo(CD_DVD, "entering DVD_LU_SEND_KEY1\n"); | |
1651 | setup_report_key(&cgc, ai->lsk.agid, 2); | |
1652 | ||
1653 | if ((ret = cdo->generic_packet(cdi, &cgc))) | |
fce53847 | 1654 | return ret; |
1da177e4 LT |
1655 | |
1656 | copy_key(ai->lsk.key, &buf[4]); | |
1657 | /* Returning data, let host change state */ | |
1658 | break; | |
1659 | ||
1660 | case DVD_LU_SEND_CHALLENGE: | |
1661 | cdinfo(CD_DVD, "entering DVD_LU_SEND_CHALLENGE\n"); | |
1662 | setup_report_key(&cgc, ai->lsc.agid, 1); | |
1663 | ||
1664 | if ((ret = cdo->generic_packet(cdi, &cgc))) | |
fce53847 | 1665 | return ret; |
1da177e4 LT |
1666 | |
1667 | copy_chal(ai->lsc.chal, &buf[4]); | |
1668 | /* Returning data, let host change state */ | |
1669 | break; | |
1670 | ||
1671 | /* Post-auth key */ | |
1672 | case DVD_LU_SEND_TITLE_KEY: | |
1673 | cdinfo(CD_DVD, "entering DVD_LU_SEND_TITLE_KEY\n"); | |
1674 | cgc.quiet = 1; | |
1675 | setup_report_key(&cgc, ai->lstk.agid, 4); | |
1676 | cgc.cmd[5] = ai->lstk.lba; | |
1677 | cgc.cmd[4] = ai->lstk.lba >> 8; | |
1678 | cgc.cmd[3] = ai->lstk.lba >> 16; | |
1679 | cgc.cmd[2] = ai->lstk.lba >> 24; | |
1680 | ||
1681 | if ((ret = cdo->generic_packet(cdi, &cgc))) | |
fce53847 | 1682 | return ret; |
1da177e4 LT |
1683 | |
1684 | ai->lstk.cpm = (buf[4] >> 7) & 1; | |
1685 | ai->lstk.cp_sec = (buf[4] >> 6) & 1; | |
1686 | ai->lstk.cgms = (buf[4] >> 4) & 3; | |
1687 | copy_key(ai->lstk.title_key, &buf[5]); | |
1688 | /* Returning data, let host change state */ | |
1689 | break; | |
1690 | ||
1691 | case DVD_LU_SEND_ASF: | |
1692 | cdinfo(CD_DVD, "entering DVD_LU_SEND_ASF\n"); | |
1693 | setup_report_key(&cgc, ai->lsasf.agid, 5); | |
1694 | ||
1695 | if ((ret = cdo->generic_packet(cdi, &cgc))) | |
fce53847 | 1696 | return ret; |
1da177e4 LT |
1697 | |
1698 | ai->lsasf.asf = buf[7] & 1; | |
1699 | break; | |
1700 | ||
1701 | /* LU data receive (LU changes state) */ | |
1702 | case DVD_HOST_SEND_CHALLENGE: | |
1703 | cdinfo(CD_DVD, "entering DVD_HOST_SEND_CHALLENGE\n"); | |
1704 | setup_send_key(&cgc, ai->hsc.agid, 1); | |
1705 | buf[1] = 0xe; | |
1706 | copy_chal(&buf[4], ai->hsc.chal); | |
1707 | ||
1708 | if ((ret = cdo->generic_packet(cdi, &cgc))) | |
fce53847 | 1709 | return ret; |
1da177e4 LT |
1710 | |
1711 | ai->type = DVD_LU_SEND_KEY1; | |
1712 | break; | |
1713 | ||
1714 | case DVD_HOST_SEND_KEY2: | |
1715 | cdinfo(CD_DVD, "entering DVD_HOST_SEND_KEY2\n"); | |
1716 | setup_send_key(&cgc, ai->hsk.agid, 3); | |
1717 | buf[1] = 0xa; | |
1718 | copy_key(&buf[4], ai->hsk.key); | |
1719 | ||
1720 | if ((ret = cdo->generic_packet(cdi, &cgc))) { | |
1721 | ai->type = DVD_AUTH_FAILURE; | |
fce53847 | 1722 | return ret; |
1da177e4 LT |
1723 | } |
1724 | ai->type = DVD_AUTH_ESTABLISHED; | |
1725 | break; | |
1726 | ||
1727 | /* Misc */ | |
1728 | case DVD_INVALIDATE_AGID: | |
1729 | cgc.quiet = 1; | |
1730 | cdinfo(CD_DVD, "entering DVD_INVALIDATE_AGID\n"); | |
1731 | setup_report_key(&cgc, ai->lsa.agid, 0x3f); | |
1732 | if ((ret = cdo->generic_packet(cdi, &cgc))) | |
fce53847 | 1733 | return ret; |
1da177e4 LT |
1734 | break; |
1735 | ||
1736 | /* Get region settings */ | |
1737 | case DVD_LU_SEND_RPC_STATE: | |
1738 | cdinfo(CD_DVD, "entering DVD_LU_SEND_RPC_STATE\n"); | |
1739 | setup_report_key(&cgc, 0, 8); | |
fce53847 FT |
1740 | memset(&rpc_state, 0, sizeof(rpc_state_t)); |
1741 | cgc.buffer = (char *) &rpc_state; | |
1da177e4 LT |
1742 | |
1743 | if ((ret = cdo->generic_packet(cdi, &cgc))) | |
fce53847 | 1744 | return ret; |
1da177e4 | 1745 | |
fce53847 FT |
1746 | ai->lrpcs.type = rpc_state.type_code; |
1747 | ai->lrpcs.vra = rpc_state.vra; | |
1748 | ai->lrpcs.ucca = rpc_state.ucca; | |
1749 | ai->lrpcs.region_mask = rpc_state.region_mask; | |
1750 | ai->lrpcs.rpc_scheme = rpc_state.rpc_scheme; | |
1da177e4 LT |
1751 | break; |
1752 | ||
1753 | /* Set region settings */ | |
1754 | case DVD_HOST_SEND_RPC_STATE: | |
1755 | cdinfo(CD_DVD, "entering DVD_HOST_SEND_RPC_STATE\n"); | |
1756 | setup_send_key(&cgc, 0, 6); | |
1757 | buf[1] = 6; | |
1758 | buf[4] = ai->hrpcs.pdrc; | |
1759 | ||
1760 | if ((ret = cdo->generic_packet(cdi, &cgc))) | |
fce53847 | 1761 | return ret; |
1da177e4 LT |
1762 | break; |
1763 | ||
1764 | default: | |
1765 | cdinfo(CD_WARNING, "Invalid DVD key ioctl (%d)\n", ai->type); | |
fce53847 | 1766 | return -ENOTTY; |
1da177e4 | 1767 | } |
fce53847 FT |
1768 | |
1769 | return 0; | |
1da177e4 LT |
1770 | } |
1771 | ||
d194139c MS |
1772 | static int dvd_read_physical(struct cdrom_device_info *cdi, dvd_struct *s, |
1773 | struct packet_command *cgc) | |
1da177e4 | 1774 | { |
fce53847 | 1775 | unsigned char buf[21], *base; |
1da177e4 | 1776 | struct dvd_layer *layer; |
1da177e4 LT |
1777 | struct cdrom_device_ops *cdo = cdi->ops; |
1778 | int ret, layer_num = s->physical.layer_num; | |
1779 | ||
1780 | if (layer_num >= DVD_LAYERS) | |
1781 | return -EINVAL; | |
1782 | ||
d194139c MS |
1783 | init_cdrom_command(cgc, buf, sizeof(buf), CGC_DATA_READ); |
1784 | cgc->cmd[0] = GPCMD_READ_DVD_STRUCTURE; | |
1785 | cgc->cmd[6] = layer_num; | |
1786 | cgc->cmd[7] = s->type; | |
1787 | cgc->cmd[9] = cgc->buflen & 0xff; | |
1da177e4 LT |
1788 | |
1789 | /* | |
1790 | * refrain from reporting errors on non-existing layers (mainly) | |
1791 | */ | |
d194139c | 1792 | cgc->quiet = 1; |
1da177e4 | 1793 | |
d194139c MS |
1794 | ret = cdo->generic_packet(cdi, cgc); |
1795 | if (ret) | |
fce53847 | 1796 | return ret; |
1da177e4 LT |
1797 | |
1798 | base = &buf[4]; | |
1799 | layer = &s->physical.layer[layer_num]; | |
1800 | ||
1801 | /* | |
1802 | * place the data... really ugly, but at least we won't have to | |
1803 | * worry about endianess in userspace. | |
1804 | */ | |
1805 | memset(layer, 0, sizeof(*layer)); | |
1806 | layer->book_version = base[0] & 0xf; | |
1807 | layer->book_type = base[0] >> 4; | |
1808 | layer->min_rate = base[1] & 0xf; | |
1809 | layer->disc_size = base[1] >> 4; | |
1810 | layer->layer_type = base[2] & 0xf; | |
1811 | layer->track_path = (base[2] >> 4) & 1; | |
1812 | layer->nlayers = (base[2] >> 5) & 3; | |
1813 | layer->track_density = base[3] & 0xf; | |
1814 | layer->linear_density = base[3] >> 4; | |
1815 | layer->start_sector = base[5] << 16 | base[6] << 8 | base[7]; | |
1816 | layer->end_sector = base[9] << 16 | base[10] << 8 | base[11]; | |
1817 | layer->end_sector_l0 = base[13] << 16 | base[14] << 8 | base[15]; | |
1818 | layer->bca = base[16] >> 7; | |
1819 | ||
fce53847 | 1820 | return 0; |
1da177e4 LT |
1821 | } |
1822 | ||
d194139c MS |
1823 | static int dvd_read_copyright(struct cdrom_device_info *cdi, dvd_struct *s, |
1824 | struct packet_command *cgc) | |
1da177e4 LT |
1825 | { |
1826 | int ret; | |
fce53847 | 1827 | u_char buf[8]; |
1da177e4 LT |
1828 | struct cdrom_device_ops *cdo = cdi->ops; |
1829 | ||
d194139c MS |
1830 | init_cdrom_command(cgc, buf, sizeof(buf), CGC_DATA_READ); |
1831 | cgc->cmd[0] = GPCMD_READ_DVD_STRUCTURE; | |
1832 | cgc->cmd[6] = s->copyright.layer_num; | |
1833 | cgc->cmd[7] = s->type; | |
1834 | cgc->cmd[8] = cgc->buflen >> 8; | |
1835 | cgc->cmd[9] = cgc->buflen & 0xff; | |
1da177e4 | 1836 | |
d194139c MS |
1837 | ret = cdo->generic_packet(cdi, cgc); |
1838 | if (ret) | |
fce53847 | 1839 | return ret; |
1da177e4 LT |
1840 | |
1841 | s->copyright.cpst = buf[4]; | |
1842 | s->copyright.rmi = buf[5]; | |
1843 | ||
fce53847 | 1844 | return 0; |
1da177e4 LT |
1845 | } |
1846 | ||
d194139c MS |
1847 | static int dvd_read_disckey(struct cdrom_device_info *cdi, dvd_struct *s, |
1848 | struct packet_command *cgc) | |
1da177e4 LT |
1849 | { |
1850 | int ret, size; | |
1851 | u_char *buf; | |
1da177e4 LT |
1852 | struct cdrom_device_ops *cdo = cdi->ops; |
1853 | ||
1854 | size = sizeof(s->disckey.value) + 4; | |
1855 | ||
d194139c MS |
1856 | buf = kmalloc(size, GFP_KERNEL); |
1857 | if (!buf) | |
1da177e4 LT |
1858 | return -ENOMEM; |
1859 | ||
d194139c MS |
1860 | init_cdrom_command(cgc, buf, size, CGC_DATA_READ); |
1861 | cgc->cmd[0] = GPCMD_READ_DVD_STRUCTURE; | |
1862 | cgc->cmd[7] = s->type; | |
1863 | cgc->cmd[8] = size >> 8; | |
1864 | cgc->cmd[9] = size & 0xff; | |
1865 | cgc->cmd[10] = s->disckey.agid << 6; | |
1da177e4 | 1866 | |
d194139c MS |
1867 | ret = cdo->generic_packet(cdi, cgc); |
1868 | if (!ret) | |
1da177e4 LT |
1869 | memcpy(s->disckey.value, &buf[4], sizeof(s->disckey.value)); |
1870 | ||
1871 | kfree(buf); | |
1872 | return ret; | |
1873 | } | |
1874 | ||
d194139c MS |
1875 | static int dvd_read_bca(struct cdrom_device_info *cdi, dvd_struct *s, |
1876 | struct packet_command *cgc) | |
1da177e4 | 1877 | { |
d194139c MS |
1878 | int ret, size = 4 + 188; |
1879 | u_char *buf; | |
1da177e4 LT |
1880 | struct cdrom_device_ops *cdo = cdi->ops; |
1881 | ||
d194139c MS |
1882 | buf = kmalloc(size, GFP_KERNEL); |
1883 | if (!buf) | |
1884 | return -ENOMEM; | |
1da177e4 | 1885 | |
d194139c MS |
1886 | init_cdrom_command(cgc, buf, size, CGC_DATA_READ); |
1887 | cgc->cmd[0] = GPCMD_READ_DVD_STRUCTURE; | |
1888 | cgc->cmd[7] = s->type; | |
1889 | cgc->cmd[9] = cgc->buflen & 0xff; | |
1890 | ||
1891 | ret = cdo->generic_packet(cdi, cgc); | |
1892 | if (ret) | |
1893 | goto out; | |
1da177e4 LT |
1894 | |
1895 | s->bca.len = buf[0] << 8 | buf[1]; | |
1896 | if (s->bca.len < 12 || s->bca.len > 188) { | |
1897 | cdinfo(CD_WARNING, "Received invalid BCA length (%d)\n", s->bca.len); | |
d194139c MS |
1898 | ret = -EIO; |
1899 | goto out; | |
1da177e4 LT |
1900 | } |
1901 | memcpy(s->bca.value, &buf[4], s->bca.len); | |
d194139c MS |
1902 | ret = 0; |
1903 | out: | |
1904 | kfree(buf); | |
1905 | return ret; | |
1da177e4 LT |
1906 | } |
1907 | ||
d194139c MS |
1908 | static int dvd_read_manufact(struct cdrom_device_info *cdi, dvd_struct *s, |
1909 | struct packet_command *cgc) | |
1da177e4 LT |
1910 | { |
1911 | int ret = 0, size; | |
1912 | u_char *buf; | |
1da177e4 LT |
1913 | struct cdrom_device_ops *cdo = cdi->ops; |
1914 | ||
1915 | size = sizeof(s->manufact.value) + 4; | |
1916 | ||
d194139c MS |
1917 | buf = kmalloc(size, GFP_KERNEL); |
1918 | if (!buf) | |
1da177e4 LT |
1919 | return -ENOMEM; |
1920 | ||
d194139c MS |
1921 | init_cdrom_command(cgc, buf, size, CGC_DATA_READ); |
1922 | cgc->cmd[0] = GPCMD_READ_DVD_STRUCTURE; | |
1923 | cgc->cmd[7] = s->type; | |
1924 | cgc->cmd[8] = size >> 8; | |
1925 | cgc->cmd[9] = size & 0xff; | |
1da177e4 | 1926 | |
d194139c MS |
1927 | ret = cdo->generic_packet(cdi, cgc); |
1928 | if (ret) | |
1929 | goto out; | |
1da177e4 LT |
1930 | |
1931 | s->manufact.len = buf[0] << 8 | buf[1]; | |
1932 | if (s->manufact.len < 0 || s->manufact.len > 2048) { | |
1933 | cdinfo(CD_WARNING, "Received invalid manufacture info length" | |
1934 | " (%d)\n", s->manufact.len); | |
1935 | ret = -EIO; | |
1936 | } else { | |
1937 | memcpy(s->manufact.value, &buf[4], s->manufact.len); | |
1938 | } | |
1939 | ||
d194139c | 1940 | out: |
1da177e4 LT |
1941 | kfree(buf); |
1942 | return ret; | |
1943 | } | |
1944 | ||
d194139c MS |
1945 | static int dvd_read_struct(struct cdrom_device_info *cdi, dvd_struct *s, |
1946 | struct packet_command *cgc) | |
1da177e4 LT |
1947 | { |
1948 | switch (s->type) { | |
1949 | case DVD_STRUCT_PHYSICAL: | |
d194139c | 1950 | return dvd_read_physical(cdi, s, cgc); |
1da177e4 LT |
1951 | |
1952 | case DVD_STRUCT_COPYRIGHT: | |
d194139c | 1953 | return dvd_read_copyright(cdi, s, cgc); |
1da177e4 LT |
1954 | |
1955 | case DVD_STRUCT_DISCKEY: | |
d194139c | 1956 | return dvd_read_disckey(cdi, s, cgc); |
1da177e4 LT |
1957 | |
1958 | case DVD_STRUCT_BCA: | |
d194139c | 1959 | return dvd_read_bca(cdi, s, cgc); |
1da177e4 LT |
1960 | |
1961 | case DVD_STRUCT_MANUFACT: | |
d194139c | 1962 | return dvd_read_manufact(cdi, s, cgc); |
1da177e4 LT |
1963 | |
1964 | default: | |
1965 | cdinfo(CD_WARNING, ": Invalid DVD structure read requested (%d)\n", | |
1966 | s->type); | |
1967 | return -EINVAL; | |
1968 | } | |
1969 | } | |
1970 | ||
1971 | int cdrom_mode_sense(struct cdrom_device_info *cdi, | |
1972 | struct packet_command *cgc, | |
1973 | int page_code, int page_control) | |
1974 | { | |
1975 | struct cdrom_device_ops *cdo = cdi->ops; | |
1976 | ||
1977 | memset(cgc->cmd, 0, sizeof(cgc->cmd)); | |
1978 | ||
1979 | cgc->cmd[0] = GPCMD_MODE_SENSE_10; | |
1980 | cgc->cmd[2] = page_code | (page_control << 6); | |
1981 | cgc->cmd[7] = cgc->buflen >> 8; | |
1982 | cgc->cmd[8] = cgc->buflen & 0xff; | |
1983 | cgc->data_direction = CGC_DATA_READ; | |
1984 | return cdo->generic_packet(cdi, cgc); | |
1985 | } | |
1986 | ||
1987 | int cdrom_mode_select(struct cdrom_device_info *cdi, | |
1988 | struct packet_command *cgc) | |
1989 | { | |
1990 | struct cdrom_device_ops *cdo = cdi->ops; | |
1991 | ||
1992 | memset(cgc->cmd, 0, sizeof(cgc->cmd)); | |
1993 | memset(cgc->buffer, 0, 2); | |
1994 | cgc->cmd[0] = GPCMD_MODE_SELECT_10; | |
1995 | cgc->cmd[1] = 0x10; /* PF */ | |
1996 | cgc->cmd[7] = cgc->buflen >> 8; | |
1997 | cgc->cmd[8] = cgc->buflen & 0xff; | |
1998 | cgc->data_direction = CGC_DATA_WRITE; | |
1999 | return cdo->generic_packet(cdi, cgc); | |
2000 | } | |
2001 | ||
2002 | static int cdrom_read_subchannel(struct cdrom_device_info *cdi, | |
2003 | struct cdrom_subchnl *subchnl, int mcn) | |
2004 | { | |
2005 | struct cdrom_device_ops *cdo = cdi->ops; | |
2006 | struct packet_command cgc; | |
fce53847 | 2007 | char buffer[32]; |
1da177e4 LT |
2008 | int ret; |
2009 | ||
2010 | init_cdrom_command(&cgc, buffer, 16, CGC_DATA_READ); | |
2011 | cgc.cmd[0] = GPCMD_READ_SUBCHANNEL; | |
2012 | cgc.cmd[1] = 2; /* MSF addressing */ | |
2013 | cgc.cmd[2] = 0x40; /* request subQ data */ | |
2014 | cgc.cmd[3] = mcn ? 2 : 1; | |
2015 | cgc.cmd[8] = 16; | |
2016 | ||
2017 | if ((ret = cdo->generic_packet(cdi, &cgc))) | |
fce53847 | 2018 | return ret; |
1da177e4 LT |
2019 | |
2020 | subchnl->cdsc_audiostatus = cgc.buffer[1]; | |
2021 | subchnl->cdsc_format = CDROM_MSF; | |
2022 | subchnl->cdsc_ctrl = cgc.buffer[5] & 0xf; | |
2023 | subchnl->cdsc_trk = cgc.buffer[6]; | |
2024 | subchnl->cdsc_ind = cgc.buffer[7]; | |
2025 | ||
2026 | subchnl->cdsc_reladdr.msf.minute = cgc.buffer[13]; | |
2027 | subchnl->cdsc_reladdr.msf.second = cgc.buffer[14]; | |
2028 | subchnl->cdsc_reladdr.msf.frame = cgc.buffer[15]; | |
2029 | subchnl->cdsc_absaddr.msf.minute = cgc.buffer[9]; | |
2030 | subchnl->cdsc_absaddr.msf.second = cgc.buffer[10]; | |
2031 | subchnl->cdsc_absaddr.msf.frame = cgc.buffer[11]; | |
2032 | ||
fce53847 | 2033 | return 0; |
1da177e4 LT |
2034 | } |
2035 | ||
2036 | /* | |
2037 | * Specific READ_10 interface | |
2038 | */ | |
2039 | static int cdrom_read_cd(struct cdrom_device_info *cdi, | |
2040 | struct packet_command *cgc, int lba, | |
2041 | int blocksize, int nblocks) | |
2042 | { | |
2043 | struct cdrom_device_ops *cdo = cdi->ops; | |
2044 | ||
2045 | memset(&cgc->cmd, 0, sizeof(cgc->cmd)); | |
2046 | cgc->cmd[0] = GPCMD_READ_10; | |
2047 | cgc->cmd[2] = (lba >> 24) & 0xff; | |
2048 | cgc->cmd[3] = (lba >> 16) & 0xff; | |
2049 | cgc->cmd[4] = (lba >> 8) & 0xff; | |
2050 | cgc->cmd[5] = lba & 0xff; | |
2051 | cgc->cmd[6] = (nblocks >> 16) & 0xff; | |
2052 | cgc->cmd[7] = (nblocks >> 8) & 0xff; | |
2053 | cgc->cmd[8] = nblocks & 0xff; | |
2054 | cgc->buflen = blocksize * nblocks; | |
2055 | return cdo->generic_packet(cdi, cgc); | |
2056 | } | |
2057 | ||
2058 | /* very generic interface for reading the various types of blocks */ | |
2059 | static int cdrom_read_block(struct cdrom_device_info *cdi, | |
2060 | struct packet_command *cgc, | |
2061 | int lba, int nblocks, int format, int blksize) | |
2062 | { | |
2063 | struct cdrom_device_ops *cdo = cdi->ops; | |
2064 | ||
2065 | memset(&cgc->cmd, 0, sizeof(cgc->cmd)); | |
2066 | cgc->cmd[0] = GPCMD_READ_CD; | |
2067 | /* expected sector size - cdda,mode1,etc. */ | |
2068 | cgc->cmd[1] = format << 2; | |
2069 | /* starting address */ | |
2070 | cgc->cmd[2] = (lba >> 24) & 0xff; | |
2071 | cgc->cmd[3] = (lba >> 16) & 0xff; | |
2072 | cgc->cmd[4] = (lba >> 8) & 0xff; | |
2073 | cgc->cmd[5] = lba & 0xff; | |
2074 | /* number of blocks */ | |
2075 | cgc->cmd[6] = (nblocks >> 16) & 0xff; | |
2076 | cgc->cmd[7] = (nblocks >> 8) & 0xff; | |
2077 | cgc->cmd[8] = nblocks & 0xff; | |
2078 | cgc->buflen = blksize * nblocks; | |
2079 | ||
2080 | /* set the header info returned */ | |
2081 | switch (blksize) { | |
2082 | case CD_FRAMESIZE_RAW0 : cgc->cmd[9] = 0x58; break; | |
2083 | case CD_FRAMESIZE_RAW1 : cgc->cmd[9] = 0x78; break; | |
2084 | case CD_FRAMESIZE_RAW : cgc->cmd[9] = 0xf8; break; | |
2085 | default : cgc->cmd[9] = 0x10; | |
2086 | } | |
2087 | ||
2088 | return cdo->generic_packet(cdi, cgc); | |
2089 | } | |
2090 | ||
2091 | static int cdrom_read_cdda_old(struct cdrom_device_info *cdi, __u8 __user *ubuf, | |
2092 | int lba, int nframes) | |
2093 | { | |
2094 | struct packet_command cgc; | |
2095 | int ret = 0; | |
2096 | int nr; | |
2097 | ||
2098 | cdi->last_sense = 0; | |
2099 | ||
2100 | memset(&cgc, 0, sizeof(cgc)); | |
2101 | ||
2102 | /* | |
2103 | * start with will ra.nframes size, back down if alloc fails | |
2104 | */ | |
2105 | nr = nframes; | |
2106 | do { | |
2107 | cgc.buffer = kmalloc(CD_FRAMESIZE_RAW * nr, GFP_KERNEL); | |
2108 | if (cgc.buffer) | |
2109 | break; | |
2110 | ||
2111 | nr >>= 1; | |
2112 | } while (nr); | |
2113 | ||
2114 | if (!nr) | |
2115 | return -ENOMEM; | |
2116 | ||
2117 | if (!access_ok(VERIFY_WRITE, ubuf, nframes * CD_FRAMESIZE_RAW)) { | |
2118 | ret = -EFAULT; | |
2119 | goto out; | |
2120 | } | |
2121 | ||
2122 | cgc.data_direction = CGC_DATA_READ; | |
2123 | while (nframes > 0) { | |
2124 | if (nr > nframes) | |
2125 | nr = nframes; | |
2126 | ||
2127 | ret = cdrom_read_block(cdi, &cgc, lba, nr, 1, CD_FRAMESIZE_RAW); | |
2128 | if (ret) | |
2129 | break; | |
2130 | if (__copy_to_user(ubuf, cgc.buffer, CD_FRAMESIZE_RAW * nr)) { | |
2131 | ret = -EFAULT; | |
2132 | break; | |
2133 | } | |
2134 | ubuf += CD_FRAMESIZE_RAW * nr; | |
2135 | nframes -= nr; | |
2136 | lba += nr; | |
2137 | } | |
2138 | out: | |
2139 | kfree(cgc.buffer); | |
2140 | return ret; | |
2141 | } | |
2142 | ||
2143 | static int cdrom_read_cdda_bpc(struct cdrom_device_info *cdi, __u8 __user *ubuf, | |
2144 | int lba, int nframes) | |
2145 | { | |
165125e1 | 2146 | struct request_queue *q = cdi->disk->queue; |
1da177e4 LT |
2147 | struct request *rq; |
2148 | struct bio *bio; | |
2149 | unsigned int len; | |
2150 | int nr, ret = 0; | |
2151 | ||
2152 | if (!q) | |
2153 | return -ENXIO; | |
2154 | ||
2155 | cdi->last_sense = 0; | |
2156 | ||
2157 | while (nframes) { | |
2158 | nr = nframes; | |
2159 | if (cdi->cdda_method == CDDA_BPC_SINGLE) | |
2160 | nr = 1; | |
ae03bf63 MP |
2161 | if (nr * CD_FRAMESIZE_RAW > (queue_max_sectors(q) << 9)) |
2162 | nr = (queue_max_sectors(q) << 9) / CD_FRAMESIZE_RAW; | |
1da177e4 LT |
2163 | |
2164 | len = nr * CD_FRAMESIZE_RAW; | |
2165 | ||
febd7a5c AB |
2166 | rq = blk_get_request(q, READ, GFP_KERNEL); |
2167 | if (!rq) { | |
2168 | ret = -ENOMEM; | |
2169 | break; | |
2170 | } | |
2171 | ||
152e283f | 2172 | ret = blk_rq_map_user(q, rq, NULL, ubuf, len, GFP_KERNEL); |
febd7a5c AB |
2173 | if (ret) { |
2174 | blk_put_request(rq); | |
dd1cab95 | 2175 | break; |
febd7a5c | 2176 | } |
1da177e4 | 2177 | |
1da177e4 LT |
2178 | rq->cmd[0] = GPCMD_READ_CD; |
2179 | rq->cmd[1] = 1 << 2; | |
2180 | rq->cmd[2] = (lba >> 24) & 0xff; | |
2181 | rq->cmd[3] = (lba >> 16) & 0xff; | |
2182 | rq->cmd[4] = (lba >> 8) & 0xff; | |
2183 | rq->cmd[5] = lba & 0xff; | |
2184 | rq->cmd[6] = (nr >> 16) & 0xff; | |
2185 | rq->cmd[7] = (nr >> 8) & 0xff; | |
2186 | rq->cmd[8] = nr & 0xff; | |
2187 | rq->cmd[9] = 0xf8; | |
2188 | ||
2189 | rq->cmd_len = 12; | |
4aff5e23 | 2190 | rq->cmd_type = REQ_TYPE_BLOCK_PC; |
1da177e4 LT |
2191 | rq->timeout = 60 * HZ; |
2192 | bio = rq->bio; | |
2193 | ||
994ca9a1 | 2194 | if (blk_execute_rq(q, cdi->disk, rq, 0)) { |
1da177e4 LT |
2195 | struct request_sense *s = rq->sense; |
2196 | ret = -EIO; | |
2197 | cdi->last_sense = s->sense_key; | |
2198 | } | |
2199 | ||
8e5cfc45 | 2200 | if (blk_rq_unmap_user(bio)) |
1da177e4 | 2201 | ret = -EFAULT; |
febd7a5c | 2202 | blk_put_request(rq); |
1da177e4 LT |
2203 | |
2204 | if (ret) | |
2205 | break; | |
2206 | ||
2207 | nframes -= nr; | |
2208 | lba += nr; | |
2209 | ubuf += len; | |
2210 | } | |
2211 | ||
2212 | return ret; | |
2213 | } | |
2214 | ||
2215 | static int cdrom_read_cdda(struct cdrom_device_info *cdi, __u8 __user *ubuf, | |
2216 | int lba, int nframes) | |
2217 | { | |
2218 | int ret; | |
2219 | ||
2220 | if (cdi->cdda_method == CDDA_OLD) | |
2221 | return cdrom_read_cdda_old(cdi, ubuf, lba, nframes); | |
2222 | ||
2223 | retry: | |
2224 | /* | |
2225 | * for anything else than success and io error, we need to retry | |
2226 | */ | |
2227 | ret = cdrom_read_cdda_bpc(cdi, ubuf, lba, nframes); | |
2228 | if (!ret || ret != -EIO) | |
2229 | return ret; | |
2230 | ||
2231 | /* | |
2232 | * I've seen drives get sense 4/8/3 udma crc errors on multi | |
2233 | * frame dma, so drop to single frame dma if we need to | |
2234 | */ | |
2235 | if (cdi->cdda_method == CDDA_BPC_FULL && nframes > 1) { | |
e597cd09 | 2236 | pr_info("dropping to single frame dma\n"); |
1da177e4 LT |
2237 | cdi->cdda_method = CDDA_BPC_SINGLE; |
2238 | goto retry; | |
2239 | } | |
2240 | ||
2241 | /* | |
2242 | * so we have an io error of some sort with multi frame dma. if the | |
2243 | * condition wasn't a hardware error | |
2244 | * problems, not for any error | |
2245 | */ | |
2246 | if (cdi->last_sense != 0x04 && cdi->last_sense != 0x0b) | |
2247 | return ret; | |
2248 | ||
e597cd09 | 2249 | pr_info("dropping to old style cdda (sense=%x)\n", cdi->last_sense); |
1da177e4 LT |
2250 | cdi->cdda_method = CDDA_OLD; |
2251 | return cdrom_read_cdda_old(cdi, ubuf, lba, nframes); | |
2252 | } | |
2253 | ||
d2c5d4fc CH |
2254 | static int cdrom_ioctl_multisession(struct cdrom_device_info *cdi, |
2255 | void __user *argp) | |
1da177e4 | 2256 | { |
d2c5d4fc CH |
2257 | struct cdrom_multisession ms_info; |
2258 | u8 requested_format; | |
1da177e4 LT |
2259 | int ret; |
2260 | ||
d2c5d4fc CH |
2261 | cdinfo(CD_DO_IOCTL, "entering CDROMMULTISESSION\n"); |
2262 | ||
2263 | if (!(cdi->ops->capability & CDC_MULTI_SESSION)) | |
2264 | return -ENOSYS; | |
2265 | ||
2266 | if (copy_from_user(&ms_info, argp, sizeof(ms_info))) | |
2267 | return -EFAULT; | |
2268 | ||
2269 | requested_format = ms_info.addr_format; | |
2270 | if (requested_format != CDROM_MSF && requested_format != CDROM_LBA) | |
2271 | return -EINVAL; | |
2272 | ms_info.addr_format = CDROM_LBA; | |
2273 | ||
2274 | ret = cdi->ops->get_last_session(cdi, &ms_info); | |
2275 | if (ret) | |
1da177e4 LT |
2276 | return ret; |
2277 | ||
d2c5d4fc CH |
2278 | sanitize_format(&ms_info.addr, &ms_info.addr_format, requested_format); |
2279 | ||
2280 | if (copy_to_user(argp, &ms_info, sizeof(ms_info))) | |
2281 | return -EFAULT; | |
2282 | ||
2283 | cdinfo(CD_DO_IOCTL, "CDROMMULTISESSION successful\n"); | |
2284 | return 0; | |
2285 | } | |
2286 | ||
2287 | static int cdrom_ioctl_eject(struct cdrom_device_info *cdi) | |
2288 | { | |
2289 | cdinfo(CD_DO_IOCTL, "entering CDROMEJECT\n"); | |
2290 | ||
2291 | if (!CDROM_CAN(CDC_OPEN_TRAY)) | |
2292 | return -ENOSYS; | |
2293 | if (cdi->use_count != 1 || keeplocked) | |
2294 | return -EBUSY; | |
2295 | if (CDROM_CAN(CDC_LOCK)) { | |
2296 | int ret = cdi->ops->lock_door(cdi, 0); | |
2297 | if (ret) | |
1da177e4 | 2298 | return ret; |
d2c5d4fc | 2299 | } |
1da177e4 | 2300 | |
d2c5d4fc CH |
2301 | return cdi->ops->tray_move(cdi, 1); |
2302 | } | |
1da177e4 | 2303 | |
d2c5d4fc CH |
2304 | static int cdrom_ioctl_closetray(struct cdrom_device_info *cdi) |
2305 | { | |
2306 | cdinfo(CD_DO_IOCTL, "entering CDROMCLOSETRAY\n"); | |
1da177e4 | 2307 | |
d2c5d4fc CH |
2308 | if (!CDROM_CAN(CDC_CLOSE_TRAY)) |
2309 | return -ENOSYS; | |
2310 | return cdi->ops->tray_move(cdi, 0); | |
2311 | } | |
1da177e4 | 2312 | |
d2c5d4fc CH |
2313 | static int cdrom_ioctl_eject_sw(struct cdrom_device_info *cdi, |
2314 | unsigned long arg) | |
2315 | { | |
2316 | cdinfo(CD_DO_IOCTL, "entering CDROMEJECT_SW\n"); | |
1da177e4 | 2317 | |
d2c5d4fc CH |
2318 | if (!CDROM_CAN(CDC_OPEN_TRAY)) |
2319 | return -ENOSYS; | |
2320 | if (keeplocked) | |
2321 | return -EBUSY; | |
1da177e4 | 2322 | |
d2c5d4fc CH |
2323 | cdi->options &= ~(CDO_AUTO_CLOSE | CDO_AUTO_EJECT); |
2324 | if (arg) | |
2325 | cdi->options |= CDO_AUTO_CLOSE | CDO_AUTO_EJECT; | |
2326 | return 0; | |
2327 | } | |
1da177e4 | 2328 | |
d2c5d4fc CH |
2329 | static int cdrom_ioctl_media_changed(struct cdrom_device_info *cdi, |
2330 | unsigned long arg) | |
2331 | { | |
2332 | struct cdrom_changer_info *info; | |
2333 | int ret; | |
1da177e4 | 2334 | |
d2c5d4fc | 2335 | cdinfo(CD_DO_IOCTL, "entering CDROM_MEDIA_CHANGED\n"); |
1da177e4 | 2336 | |
d2c5d4fc CH |
2337 | if (!CDROM_CAN(CDC_MEDIA_CHANGED)) |
2338 | return -ENOSYS; | |
1da177e4 | 2339 | |
d2c5d4fc CH |
2340 | /* cannot select disc or select current disc */ |
2341 | if (!CDROM_CAN(CDC_SELECT_DISC) || arg == CDSL_CURRENT) | |
2342 | return media_changed(cdi, 1); | |
1da177e4 | 2343 | |
d2c5d4fc CH |
2344 | if ((unsigned int)arg >= cdi->capacity) |
2345 | return -EINVAL; | |
1da177e4 | 2346 | |
d2c5d4fc CH |
2347 | info = kmalloc(sizeof(*info), GFP_KERNEL); |
2348 | if (!info) | |
2349 | return -ENOMEM; | |
1da177e4 | 2350 | |
d2c5d4fc CH |
2351 | ret = cdrom_read_mech_status(cdi, info); |
2352 | if (!ret) | |
2353 | ret = info->slots[arg].change; | |
2354 | kfree(info); | |
2355 | return ret; | |
2356 | } | |
1da177e4 | 2357 | |
d2c5d4fc CH |
2358 | static int cdrom_ioctl_set_options(struct cdrom_device_info *cdi, |
2359 | unsigned long arg) | |
2360 | { | |
2361 | cdinfo(CD_DO_IOCTL, "entering CDROM_SET_OPTIONS\n"); | |
1da177e4 | 2362 | |
d2c5d4fc CH |
2363 | /* |
2364 | * Options need to be in sync with capability. | |
2365 | * Too late for that, so we have to check each one separately. | |
2366 | */ | |
2367 | switch (arg) { | |
2368 | case CDO_USE_FFLAGS: | |
2369 | case CDO_CHECK_TYPE: | |
2370 | break; | |
2371 | case CDO_LOCK: | |
2372 | if (!CDROM_CAN(CDC_LOCK)) | |
2373 | return -ENOSYS; | |
2374 | break; | |
2375 | case 0: | |
2376 | return cdi->options; | |
2377 | /* default is basically CDO_[AUTO_CLOSE|AUTO_EJECT] */ | |
2378 | default: | |
2379 | if (!CDROM_CAN(arg)) | |
1da177e4 | 2380 | return -ENOSYS; |
d2c5d4fc CH |
2381 | } |
2382 | cdi->options |= (int) arg; | |
2383 | return cdi->options; | |
2384 | } | |
1da177e4 | 2385 | |
d2c5d4fc CH |
2386 | static int cdrom_ioctl_clear_options(struct cdrom_device_info *cdi, |
2387 | unsigned long arg) | |
2388 | { | |
2389 | cdinfo(CD_DO_IOCTL, "entering CDROM_CLEAR_OPTIONS\n"); | |
1da177e4 | 2390 | |
d2c5d4fc CH |
2391 | cdi->options &= ~(int) arg; |
2392 | return cdi->options; | |
2393 | } | |
1da177e4 | 2394 | |
d2c5d4fc CH |
2395 | static int cdrom_ioctl_select_speed(struct cdrom_device_info *cdi, |
2396 | unsigned long arg) | |
2397 | { | |
2398 | cdinfo(CD_DO_IOCTL, "entering CDROM_SELECT_SPEED\n"); | |
1da177e4 | 2399 | |
d2c5d4fc CH |
2400 | if (!CDROM_CAN(CDC_SELECT_SPEED)) |
2401 | return -ENOSYS; | |
2402 | return cdi->ops->select_speed(cdi, arg); | |
2403 | } | |
1da177e4 | 2404 | |
d2c5d4fc CH |
2405 | static int cdrom_ioctl_select_disc(struct cdrom_device_info *cdi, |
2406 | unsigned long arg) | |
2407 | { | |
2408 | cdinfo(CD_DO_IOCTL, "entering CDROM_SELECT_DISC\n"); | |
2409 | ||
2410 | if (!CDROM_CAN(CDC_SELECT_DISC)) | |
2411 | return -ENOSYS; | |
2412 | ||
2413 | if (arg != CDSL_CURRENT && arg != CDSL_NONE) { | |
2414 | if ((int)arg >= cdi->capacity) | |
2415 | return -EINVAL; | |
2416 | } | |
2417 | ||
2418 | /* | |
2419 | * ->select_disc is a hook to allow a driver-specific way of | |
2420 | * seleting disc. However, since there is no equivalent hook for | |
2421 | * cdrom_slot_status this may not actually be useful... | |
2422 | */ | |
2423 | if (cdi->ops->select_disc) | |
2424 | return cdi->ops->select_disc(cdi, arg); | |
2425 | ||
2426 | cdinfo(CD_CHANGER, "Using generic cdrom_select_disc()\n"); | |
2427 | return cdrom_select_disc(cdi, arg); | |
2428 | } | |
2429 | ||
2430 | static int cdrom_ioctl_reset(struct cdrom_device_info *cdi, | |
2431 | struct block_device *bdev) | |
2432 | { | |
2433 | cdinfo(CD_DO_IOCTL, "entering CDROM_RESET\n"); | |
2434 | ||
2435 | if (!capable(CAP_SYS_ADMIN)) | |
2436 | return -EACCES; | |
2437 | if (!CDROM_CAN(CDC_RESET)) | |
2438 | return -ENOSYS; | |
f98393a6 | 2439 | invalidate_bdev(bdev); |
d2c5d4fc CH |
2440 | return cdi->ops->reset(cdi); |
2441 | } | |
2442 | ||
2443 | static int cdrom_ioctl_lock_door(struct cdrom_device_info *cdi, | |
2444 | unsigned long arg) | |
2445 | { | |
2446 | cdinfo(CD_DO_IOCTL, "%socking door.\n", arg ? "L" : "Unl"); | |
2447 | ||
2448 | if (!CDROM_CAN(CDC_LOCK)) | |
2449 | return -EDRIVE_CANT_DO_THIS; | |
2450 | ||
2451 | keeplocked = arg ? 1 : 0; | |
2452 | ||
2453 | /* | |
2454 | * Don't unlock the door on multiple opens by default, but allow | |
2455 | * root to do so. | |
2456 | */ | |
2457 | if (cdi->use_count != 1 && !arg && !capable(CAP_SYS_ADMIN)) | |
2458 | return -EBUSY; | |
2459 | return cdi->ops->lock_door(cdi, arg); | |
2460 | } | |
2461 | ||
2462 | static int cdrom_ioctl_debug(struct cdrom_device_info *cdi, | |
2463 | unsigned long arg) | |
2464 | { | |
2465 | cdinfo(CD_DO_IOCTL, "%sabling debug.\n", arg ? "En" : "Dis"); | |
2466 | ||
2467 | if (!capable(CAP_SYS_ADMIN)) | |
2468 | return -EACCES; | |
2469 | debug = arg ? 1 : 0; | |
2470 | return debug; | |
2471 | } | |
1da177e4 | 2472 | |
d2c5d4fc CH |
2473 | static int cdrom_ioctl_get_capability(struct cdrom_device_info *cdi) |
2474 | { | |
2475 | cdinfo(CD_DO_IOCTL, "entering CDROM_GET_CAPABILITY\n"); | |
2476 | return (cdi->ops->capability & ~cdi->mask); | |
2477 | } | |
2478 | ||
2479 | /* | |
2480 | * The following function is implemented, although very few audio | |
1da177e4 LT |
2481 | * discs give Universal Product Code information, which should just be |
2482 | * the Medium Catalog Number on the box. Note, that the way the code | |
2483 | * is written on the CD is /not/ uniform across all discs! | |
2484 | */ | |
d2c5d4fc CH |
2485 | static int cdrom_ioctl_get_mcn(struct cdrom_device_info *cdi, |
2486 | void __user *argp) | |
2487 | { | |
2488 | struct cdrom_mcn mcn; | |
2489 | int ret; | |
1da177e4 | 2490 | |
d2c5d4fc | 2491 | cdinfo(CD_DO_IOCTL, "entering CDROM_GET_MCN\n"); |
1da177e4 | 2492 | |
d2c5d4fc CH |
2493 | if (!(cdi->ops->capability & CDC_MCN)) |
2494 | return -ENOSYS; | |
2495 | ret = cdi->ops->get_mcn(cdi, &mcn); | |
2496 | if (ret) | |
2497 | return ret; | |
1da177e4 | 2498 | |
d2c5d4fc CH |
2499 | if (copy_to_user(argp, &mcn, sizeof(mcn))) |
2500 | return -EFAULT; | |
2501 | cdinfo(CD_DO_IOCTL, "CDROM_GET_MCN successful\n"); | |
2502 | return 0; | |
2503 | } | |
1da177e4 | 2504 | |
d2c5d4fc CH |
2505 | static int cdrom_ioctl_drive_status(struct cdrom_device_info *cdi, |
2506 | unsigned long arg) | |
2507 | { | |
2508 | cdinfo(CD_DO_IOCTL, "entering CDROM_DRIVE_STATUS\n"); | |
2509 | ||
2510 | if (!(cdi->ops->capability & CDC_DRIVE_STATUS)) | |
2511 | return -ENOSYS; | |
2512 | if (!CDROM_CAN(CDC_SELECT_DISC) || | |
2513 | (arg == CDSL_CURRENT || arg == CDSL_NONE)) | |
2514 | return cdi->ops->drive_status(cdi, CDSL_CURRENT); | |
2515 | if (((int)arg >= cdi->capacity)) | |
2516 | return -EINVAL; | |
2517 | return cdrom_slot_status(cdi, arg); | |
2518 | } | |
2519 | ||
2520 | /* | |
2521 | * Ok, this is where problems start. The current interface for the | |
2522 | * CDROM_DISC_STATUS ioctl is flawed. It makes the false assumption that | |
25985edc | 2523 | * CDs are all CDS_DATA_1 or all CDS_AUDIO, etc. Unfortunately, while this |
d2c5d4fc CH |
2524 | * is often the case, it is also very common for CDs to have some tracks |
2525 | * with data, and some tracks with audio. Just because I feel like it, | |
2526 | * I declare the following to be the best way to cope. If the CD has ANY | |
2527 | * data tracks on it, it will be returned as a data CD. If it has any XA | |
2528 | * tracks, I will return it as that. Now I could simplify this interface | |
2529 | * by combining these returns with the above, but this more clearly | |
2530 | * demonstrates the problem with the current interface. Too bad this | |
2531 | * wasn't designed to use bitmasks... -Erik | |
2532 | * | |
2533 | * Well, now we have the option CDS_MIXED: a mixed-type CD. | |
2534 | * User level programmers might feel the ioctl is not very useful. | |
2535 | * ---david | |
2536 | */ | |
2537 | static int cdrom_ioctl_disc_status(struct cdrom_device_info *cdi) | |
2538 | { | |
2539 | tracktype tracks; | |
2540 | ||
2541 | cdinfo(CD_DO_IOCTL, "entering CDROM_DISC_STATUS\n"); | |
2542 | ||
2543 | cdrom_count_tracks(cdi, &tracks); | |
2544 | if (tracks.error) | |
2545 | return tracks.error; | |
2546 | ||
2547 | /* Policy mode on */ | |
2548 | if (tracks.audio > 0) { | |
2549 | if (!tracks.data && !tracks.cdi && !tracks.xa) | |
2550 | return CDS_AUDIO; | |
2551 | else | |
2552 | return CDS_MIXED; | |
1da177e4 LT |
2553 | } |
2554 | ||
d2c5d4fc CH |
2555 | if (tracks.cdi > 0) |
2556 | return CDS_XA_2_2; | |
2557 | if (tracks.xa > 0) | |
2558 | return CDS_XA_2_1; | |
2559 | if (tracks.data > 0) | |
2560 | return CDS_DATA_1; | |
2561 | /* Policy mode off */ | |
2562 | ||
2563 | cdinfo(CD_WARNING,"This disc doesn't have any tracks I recognize!\n"); | |
2564 | return CDS_NO_INFO; | |
2565 | } | |
2566 | ||
2567 | static int cdrom_ioctl_changer_nslots(struct cdrom_device_info *cdi) | |
2568 | { | |
2569 | cdinfo(CD_DO_IOCTL, "entering CDROM_CHANGER_NSLOTS\n"); | |
2570 | return cdi->capacity; | |
2571 | } | |
2572 | ||
2573 | static int cdrom_ioctl_get_subchnl(struct cdrom_device_info *cdi, | |
2574 | void __user *argp) | |
2575 | { | |
2576 | struct cdrom_subchnl q; | |
2577 | u8 requested, back; | |
2578 | int ret; | |
2579 | ||
2580 | /* cdinfo(CD_DO_IOCTL,"entering CDROMSUBCHNL\n");*/ | |
2581 | ||
d2c5d4fc CH |
2582 | if (copy_from_user(&q, argp, sizeof(q))) |
2583 | return -EFAULT; | |
2584 | ||
2585 | requested = q.cdsc_format; | |
2586 | if (requested != CDROM_MSF && requested != CDROM_LBA) | |
2587 | return -EINVAL; | |
2588 | q.cdsc_format = CDROM_MSF; | |
2589 | ||
2590 | ret = cdi->ops->audio_ioctl(cdi, CDROMSUBCHNL, &q); | |
2591 | if (ret) | |
2592 | return ret; | |
2593 | ||
2594 | back = q.cdsc_format; /* local copy */ | |
2595 | sanitize_format(&q.cdsc_absaddr, &back, requested); | |
2596 | sanitize_format(&q.cdsc_reladdr, &q.cdsc_format, requested); | |
2597 | ||
2598 | if (copy_to_user(argp, &q, sizeof(q))) | |
2599 | return -EFAULT; | |
2600 | /* cdinfo(CD_DO_IOCTL, "CDROMSUBCHNL successful\n"); */ | |
2601 | return 0; | |
2602 | } | |
2603 | ||
2604 | static int cdrom_ioctl_read_tochdr(struct cdrom_device_info *cdi, | |
2605 | void __user *argp) | |
2606 | { | |
2607 | struct cdrom_tochdr header; | |
2608 | int ret; | |
2609 | ||
2610 | /* cdinfo(CD_DO_IOCTL, "entering CDROMREADTOCHDR\n"); */ | |
2611 | ||
d2c5d4fc CH |
2612 | if (copy_from_user(&header, argp, sizeof(header))) |
2613 | return -EFAULT; | |
2614 | ||
2615 | ret = cdi->ops->audio_ioctl(cdi, CDROMREADTOCHDR, &header); | |
2616 | if (ret) | |
2617 | return ret; | |
2618 | ||
2619 | if (copy_to_user(argp, &header, sizeof(header))) | |
2620 | return -EFAULT; | |
2621 | /* cdinfo(CD_DO_IOCTL, "CDROMREADTOCHDR successful\n"); */ | |
2622 | return 0; | |
2623 | } | |
2624 | ||
2625 | static int cdrom_ioctl_read_tocentry(struct cdrom_device_info *cdi, | |
2626 | void __user *argp) | |
2627 | { | |
2628 | struct cdrom_tocentry entry; | |
2629 | u8 requested_format; | |
2630 | int ret; | |
2631 | ||
2632 | /* cdinfo(CD_DO_IOCTL, "entering CDROMREADTOCENTRY\n"); */ | |
2633 | ||
d2c5d4fc CH |
2634 | if (copy_from_user(&entry, argp, sizeof(entry))) |
2635 | return -EFAULT; | |
2636 | ||
2637 | requested_format = entry.cdte_format; | |
2638 | if (requested_format != CDROM_MSF && requested_format != CDROM_LBA) | |
2639 | return -EINVAL; | |
2640 | /* make interface to low-level uniform */ | |
2641 | entry.cdte_format = CDROM_MSF; | |
2642 | ret = cdi->ops->audio_ioctl(cdi, CDROMREADTOCENTRY, &entry); | |
2643 | if (ret) | |
2644 | return ret; | |
2645 | sanitize_format(&entry.cdte_addr, &entry.cdte_format, requested_format); | |
2646 | ||
2647 | if (copy_to_user(argp, &entry, sizeof(entry))) | |
2648 | return -EFAULT; | |
2649 | /* cdinfo(CD_DO_IOCTL, "CDROMREADTOCENTRY successful\n"); */ | |
2650 | return 0; | |
2651 | } | |
2652 | ||
2653 | static int cdrom_ioctl_play_msf(struct cdrom_device_info *cdi, | |
2654 | void __user *argp) | |
2655 | { | |
2656 | struct cdrom_msf msf; | |
2657 | ||
2658 | cdinfo(CD_DO_IOCTL, "entering CDROMPLAYMSF\n"); | |
2659 | ||
2660 | if (!CDROM_CAN(CDC_PLAY_AUDIO)) | |
2661 | return -ENOSYS; | |
2662 | if (copy_from_user(&msf, argp, sizeof(msf))) | |
2663 | return -EFAULT; | |
2664 | return cdi->ops->audio_ioctl(cdi, CDROMPLAYMSF, &msf); | |
2665 | } | |
2666 | ||
2667 | static int cdrom_ioctl_play_trkind(struct cdrom_device_info *cdi, | |
2668 | void __user *argp) | |
2669 | { | |
2670 | struct cdrom_ti ti; | |
2671 | int ret; | |
2672 | ||
2673 | cdinfo(CD_DO_IOCTL, "entering CDROMPLAYTRKIND\n"); | |
2674 | ||
2675 | if (!CDROM_CAN(CDC_PLAY_AUDIO)) | |
2676 | return -ENOSYS; | |
2677 | if (copy_from_user(&ti, argp, sizeof(ti))) | |
2678 | return -EFAULT; | |
2679 | ||
2680 | ret = check_for_audio_disc(cdi, cdi->ops); | |
2681 | if (ret) | |
2682 | return ret; | |
2683 | return cdi->ops->audio_ioctl(cdi, CDROMPLAYTRKIND, &ti); | |
2684 | } | |
2685 | static int cdrom_ioctl_volctrl(struct cdrom_device_info *cdi, | |
2686 | void __user *argp) | |
2687 | { | |
2688 | struct cdrom_volctrl volume; | |
2689 | ||
2690 | cdinfo(CD_DO_IOCTL, "entering CDROMVOLCTRL\n"); | |
2691 | ||
2692 | if (!CDROM_CAN(CDC_PLAY_AUDIO)) | |
2693 | return -ENOSYS; | |
2694 | if (copy_from_user(&volume, argp, sizeof(volume))) | |
2695 | return -EFAULT; | |
2696 | return cdi->ops->audio_ioctl(cdi, CDROMVOLCTRL, &volume); | |
2697 | } | |
2698 | ||
2699 | static int cdrom_ioctl_volread(struct cdrom_device_info *cdi, | |
2700 | void __user *argp) | |
2701 | { | |
2702 | struct cdrom_volctrl volume; | |
2703 | int ret; | |
2704 | ||
2705 | cdinfo(CD_DO_IOCTL, "entering CDROMVOLREAD\n"); | |
2706 | ||
2707 | if (!CDROM_CAN(CDC_PLAY_AUDIO)) | |
2708 | return -ENOSYS; | |
2709 | ||
2710 | ret = cdi->ops->audio_ioctl(cdi, CDROMVOLREAD, &volume); | |
2711 | if (ret) | |
2712 | return ret; | |
2713 | ||
2714 | if (copy_to_user(argp, &volume, sizeof(volume))) | |
2715 | return -EFAULT; | |
2716 | return 0; | |
2717 | } | |
2718 | ||
2719 | static int cdrom_ioctl_audioctl(struct cdrom_device_info *cdi, | |
2720 | unsigned int cmd) | |
2721 | { | |
2722 | int ret; | |
2723 | ||
2724 | cdinfo(CD_DO_IOCTL, "doing audio ioctl (start/stop/pause/resume)\n"); | |
2725 | ||
2726 | if (!CDROM_CAN(CDC_PLAY_AUDIO)) | |
2727 | return -ENOSYS; | |
2728 | ret = check_for_audio_disc(cdi, cdi->ops); | |
2729 | if (ret) | |
2730 | return ret; | |
2731 | return cdi->ops->audio_ioctl(cdi, cmd, NULL); | |
2732 | } | |
2733 | ||
2734 | /* | |
2735 | * Just about every imaginable ioctl is supported in the Uniform layer | |
2736 | * these days. | |
2737 | * ATAPI / SCSI specific code now mainly resides in mmc_ioctl(). | |
2738 | */ | |
bbc1cc97 AV |
2739 | int cdrom_ioctl(struct cdrom_device_info *cdi, struct block_device *bdev, |
2740 | fmode_t mode, unsigned int cmd, unsigned long arg) | |
d2c5d4fc CH |
2741 | { |
2742 | void __user *argp = (void __user *)arg; | |
2743 | int ret; | |
bbc1cc97 | 2744 | struct gendisk *disk = bdev->bd_disk; |
d2c5d4fc CH |
2745 | |
2746 | /* | |
2747 | * Try the generic SCSI command ioctl's first. | |
2748 | */ | |
bbc1cc97 | 2749 | ret = scsi_cmd_ioctl(disk->queue, disk, mode, cmd, argp); |
d2c5d4fc CH |
2750 | if (ret != -ENOTTY) |
2751 | return ret; | |
2752 | ||
2753 | switch (cmd) { | |
2754 | case CDROMMULTISESSION: | |
2755 | return cdrom_ioctl_multisession(cdi, argp); | |
2756 | case CDROMEJECT: | |
2757 | return cdrom_ioctl_eject(cdi); | |
2758 | case CDROMCLOSETRAY: | |
2759 | return cdrom_ioctl_closetray(cdi); | |
2760 | case CDROMEJECT_SW: | |
2761 | return cdrom_ioctl_eject_sw(cdi, arg); | |
2762 | case CDROM_MEDIA_CHANGED: | |
2763 | return cdrom_ioctl_media_changed(cdi, arg); | |
2764 | case CDROM_SET_OPTIONS: | |
2765 | return cdrom_ioctl_set_options(cdi, arg); | |
2766 | case CDROM_CLEAR_OPTIONS: | |
2767 | return cdrom_ioctl_clear_options(cdi, arg); | |
2768 | case CDROM_SELECT_SPEED: | |
2769 | return cdrom_ioctl_select_speed(cdi, arg); | |
2770 | case CDROM_SELECT_DISC: | |
2771 | return cdrom_ioctl_select_disc(cdi, arg); | |
2772 | case CDROMRESET: | |
bbc1cc97 | 2773 | return cdrom_ioctl_reset(cdi, bdev); |
d2c5d4fc CH |
2774 | case CDROM_LOCKDOOR: |
2775 | return cdrom_ioctl_lock_door(cdi, arg); | |
2776 | case CDROM_DEBUG: | |
2777 | return cdrom_ioctl_debug(cdi, arg); | |
2778 | case CDROM_GET_CAPABILITY: | |
2779 | return cdrom_ioctl_get_capability(cdi); | |
2780 | case CDROM_GET_MCN: | |
2781 | return cdrom_ioctl_get_mcn(cdi, argp); | |
2782 | case CDROM_DRIVE_STATUS: | |
2783 | return cdrom_ioctl_drive_status(cdi, arg); | |
2784 | case CDROM_DISC_STATUS: | |
2785 | return cdrom_ioctl_disc_status(cdi); | |
2786 | case CDROM_CHANGER_NSLOTS: | |
2787 | return cdrom_ioctl_changer_nslots(cdi); | |
2788 | } | |
2789 | ||
2790 | /* | |
2791 | * Use the ioctls that are implemented through the generic_packet() | |
2792 | * interface. this may look at bit funny, but if -ENOTTY is | |
2793 | * returned that particular ioctl is not implemented and we | |
2794 | * let it go through the device specific ones. | |
2795 | */ | |
1da177e4 LT |
2796 | if (CDROM_CAN(CDC_GENERIC_PACKET)) { |
2797 | ret = mmc_ioctl(cdi, cmd, arg); | |
d2c5d4fc | 2798 | if (ret != -ENOTTY) |
1da177e4 | 2799 | return ret; |
1da177e4 LT |
2800 | } |
2801 | ||
d2c5d4fc CH |
2802 | /* |
2803 | * Note: most of the cdinfo() calls are commented out here, | |
2804 | * because they fill up the sys log when CD players poll | |
2805 | * the drive. | |
2806 | */ | |
1da177e4 | 2807 | switch (cmd) { |
d2c5d4fc CH |
2808 | case CDROMSUBCHNL: |
2809 | return cdrom_ioctl_get_subchnl(cdi, argp); | |
2810 | case CDROMREADTOCHDR: | |
2811 | return cdrom_ioctl_read_tochdr(cdi, argp); | |
2812 | case CDROMREADTOCENTRY: | |
2813 | return cdrom_ioctl_read_tocentry(cdi, argp); | |
2814 | case CDROMPLAYMSF: | |
2815 | return cdrom_ioctl_play_msf(cdi, argp); | |
2816 | case CDROMPLAYTRKIND: | |
2817 | return cdrom_ioctl_play_trkind(cdi, argp); | |
2818 | case CDROMVOLCTRL: | |
2819 | return cdrom_ioctl_volctrl(cdi, argp); | |
2820 | case CDROMVOLREAD: | |
2821 | return cdrom_ioctl_volread(cdi, argp); | |
1da177e4 LT |
2822 | case CDROMSTART: |
2823 | case CDROMSTOP: | |
2824 | case CDROMPAUSE: | |
d2c5d4fc CH |
2825 | case CDROMRESUME: |
2826 | return cdrom_ioctl_audioctl(cdi, cmd); | |
2827 | } | |
1da177e4 | 2828 | |
1da177e4 LT |
2829 | return -ENOSYS; |
2830 | } | |
2831 | ||
1da177e4 LT |
2832 | /* |
2833 | * Required when we need to use READ_10 to issue other than 2048 block | |
2834 | * reads | |
2835 | */ | |
2836 | static int cdrom_switch_blocksize(struct cdrom_device_info *cdi, int size) | |
2837 | { | |
2838 | struct cdrom_device_ops *cdo = cdi->ops; | |
2839 | struct packet_command cgc; | |
2840 | struct modesel_head mh; | |
2841 | ||
2842 | memset(&mh, 0, sizeof(mh)); | |
2843 | mh.block_desc_length = 0x08; | |
2844 | mh.block_length_med = (size >> 8) & 0xff; | |
2845 | mh.block_length_lo = size & 0xff; | |
2846 | ||
2847 | memset(&cgc, 0, sizeof(cgc)); | |
2848 | cgc.cmd[0] = 0x15; | |
2849 | cgc.cmd[1] = 1 << 4; | |
2850 | cgc.cmd[4] = 12; | |
2851 | cgc.buflen = sizeof(mh); | |
2852 | cgc.buffer = (char *) &mh; | |
2853 | cgc.data_direction = CGC_DATA_WRITE; | |
2854 | mh.block_desc_length = 0x08; | |
2855 | mh.block_length_med = (size >> 8) & 0xff; | |
2856 | mh.block_length_lo = size & 0xff; | |
2857 | ||
2858 | return cdo->generic_packet(cdi, &cgc); | |
2859 | } | |
2860 | ||
3147c531 MS |
2861 | static noinline int mmc_ioctl_cdrom_read_data(struct cdrom_device_info *cdi, |
2862 | void __user *arg, | |
2863 | struct packet_command *cgc, | |
2864 | int cmd) | |
2865 | { | |
1da177e4 | 2866 | struct request_sense sense; |
3147c531 MS |
2867 | struct cdrom_msf msf; |
2868 | int blocksize = 0, format = 0, lba; | |
2869 | int ret; | |
1da177e4 | 2870 | |
1da177e4 LT |
2871 | switch (cmd) { |
2872 | case CDROMREADRAW: | |
3147c531 MS |
2873 | blocksize = CD_FRAMESIZE_RAW; |
2874 | break; | |
1da177e4 | 2875 | case CDROMREADMODE1: |
3147c531 MS |
2876 | blocksize = CD_FRAMESIZE; |
2877 | format = 2; | |
2878 | break; | |
2879 | case CDROMREADMODE2: | |
2880 | blocksize = CD_FRAMESIZE_RAW0; | |
2881 | break; | |
2882 | } | |
2883 | IOCTL_IN(arg, struct cdrom_msf, msf); | |
2884 | lba = msf_to_lba(msf.cdmsf_min0, msf.cdmsf_sec0, msf.cdmsf_frame0); | |
2885 | /* FIXME: we need upper bound checking, too!! */ | |
2886 | if (lba < 0) | |
2887 | return -EINVAL; | |
2888 | ||
2889 | cgc->buffer = kmalloc(blocksize, GFP_KERNEL); | |
2890 | if (cgc->buffer == NULL) | |
2891 | return -ENOMEM; | |
2892 | ||
2893 | memset(&sense, 0, sizeof(sense)); | |
2894 | cgc->sense = &sense; | |
2895 | cgc->data_direction = CGC_DATA_READ; | |
2896 | ret = cdrom_read_block(cdi, cgc, lba, 1, format, blocksize); | |
2897 | if (ret && sense.sense_key == 0x05 && | |
2898 | sense.asc == 0x20 && | |
2899 | sense.ascq == 0x00) { | |
2900 | /* | |
2901 | * SCSI-II devices are not required to support | |
2902 | * READ_CD, so let's try switching block size | |
2903 | */ | |
2904 | /* FIXME: switch back again... */ | |
2905 | ret = cdrom_switch_blocksize(cdi, blocksize); | |
2906 | if (ret) | |
2907 | goto out; | |
2908 | cgc->sense = NULL; | |
2909 | ret = cdrom_read_cd(cdi, cgc, lba, blocksize, 1); | |
2910 | ret |= cdrom_switch_blocksize(cdi, blocksize); | |
2911 | } | |
2912 | if (!ret && copy_to_user(arg, cgc->buffer, blocksize)) | |
2913 | ret = -EFAULT; | |
2914 | out: | |
2915 | kfree(cgc->buffer); | |
2916 | return ret; | |
2917 | } | |
2918 | ||
2919 | static noinline int mmc_ioctl_cdrom_read_audio(struct cdrom_device_info *cdi, | |
2920 | void __user *arg) | |
2921 | { | |
2922 | struct cdrom_read_audio ra; | |
2923 | int lba; | |
2924 | ||
2925 | IOCTL_IN(arg, struct cdrom_read_audio, ra); | |
2926 | ||
2927 | if (ra.addr_format == CDROM_MSF) | |
2928 | lba = msf_to_lba(ra.addr.msf.minute, | |
2929 | ra.addr.msf.second, | |
2930 | ra.addr.msf.frame); | |
2931 | else if (ra.addr_format == CDROM_LBA) | |
2932 | lba = ra.addr.lba; | |
2933 | else | |
2934 | return -EINVAL; | |
2935 | ||
2936 | /* FIXME: we need upper bound checking, too!! */ | |
2937 | if (lba < 0 || ra.nframes <= 0 || ra.nframes > CD_FRAMES) | |
2938 | return -EINVAL; | |
2939 | ||
2940 | return cdrom_read_cdda(cdi, ra.buf, lba, ra.nframes); | |
2941 | } | |
2942 | ||
2943 | static noinline int mmc_ioctl_cdrom_subchannel(struct cdrom_device_info *cdi, | |
2944 | void __user *arg) | |
2945 | { | |
2946 | int ret; | |
2947 | struct cdrom_subchnl q; | |
2948 | u_char requested, back; | |
2949 | IOCTL_IN(arg, struct cdrom_subchnl, q); | |
2950 | requested = q.cdsc_format; | |
2951 | if (!((requested == CDROM_MSF) || | |
2952 | (requested == CDROM_LBA))) | |
2953 | return -EINVAL; | |
2954 | q.cdsc_format = CDROM_MSF; | |
2955 | ret = cdrom_read_subchannel(cdi, &q, 0); | |
2956 | if (ret) | |
1da177e4 | 2957 | return ret; |
3147c531 MS |
2958 | back = q.cdsc_format; /* local copy */ |
2959 | sanitize_format(&q.cdsc_absaddr, &back, requested); | |
2960 | sanitize_format(&q.cdsc_reladdr, &q.cdsc_format, requested); | |
2961 | IOCTL_OUT(arg, struct cdrom_subchnl, q); | |
2962 | /* cdinfo(CD_DO_IOCTL, "CDROMSUBCHNL successful\n"); */ | |
2963 | return 0; | |
2964 | } | |
1da177e4 | 2965 | |
3147c531 MS |
2966 | static noinline int mmc_ioctl_cdrom_play_msf(struct cdrom_device_info *cdi, |
2967 | void __user *arg, | |
2968 | struct packet_command *cgc) | |
2969 | { | |
2970 | struct cdrom_device_ops *cdo = cdi->ops; | |
2971 | struct cdrom_msf msf; | |
2972 | cdinfo(CD_DO_IOCTL, "entering CDROMPLAYMSF\n"); | |
2973 | IOCTL_IN(arg, struct cdrom_msf, msf); | |
2974 | cgc->cmd[0] = GPCMD_PLAY_AUDIO_MSF; | |
2975 | cgc->cmd[3] = msf.cdmsf_min0; | |
2976 | cgc->cmd[4] = msf.cdmsf_sec0; | |
2977 | cgc->cmd[5] = msf.cdmsf_frame0; | |
2978 | cgc->cmd[6] = msf.cdmsf_min1; | |
2979 | cgc->cmd[7] = msf.cdmsf_sec1; | |
2980 | cgc->cmd[8] = msf.cdmsf_frame1; | |
2981 | cgc->data_direction = CGC_DATA_NONE; | |
2982 | return cdo->generic_packet(cdi, cgc); | |
2983 | } | |
1da177e4 | 2984 | |
3147c531 MS |
2985 | static noinline int mmc_ioctl_cdrom_play_blk(struct cdrom_device_info *cdi, |
2986 | void __user *arg, | |
2987 | struct packet_command *cgc) | |
2988 | { | |
2989 | struct cdrom_device_ops *cdo = cdi->ops; | |
2990 | struct cdrom_blk blk; | |
2991 | cdinfo(CD_DO_IOCTL, "entering CDROMPLAYBLK\n"); | |
2992 | IOCTL_IN(arg, struct cdrom_blk, blk); | |
2993 | cgc->cmd[0] = GPCMD_PLAY_AUDIO_10; | |
2994 | cgc->cmd[2] = (blk.from >> 24) & 0xff; | |
2995 | cgc->cmd[3] = (blk.from >> 16) & 0xff; | |
2996 | cgc->cmd[4] = (blk.from >> 8) & 0xff; | |
2997 | cgc->cmd[5] = blk.from & 0xff; | |
2998 | cgc->cmd[7] = (blk.len >> 8) & 0xff; | |
2999 | cgc->cmd[8] = blk.len & 0xff; | |
3000 | cgc->data_direction = CGC_DATA_NONE; | |
3001 | return cdo->generic_packet(cdi, cgc); | |
3002 | } | |
1da177e4 | 3003 | |
3147c531 MS |
3004 | static noinline int mmc_ioctl_cdrom_volume(struct cdrom_device_info *cdi, |
3005 | void __user *arg, | |
3006 | struct packet_command *cgc, | |
3007 | unsigned int cmd) | |
3008 | { | |
3009 | struct cdrom_volctrl volctrl; | |
3010 | unsigned char buffer[32]; | |
3011 | char mask[sizeof(buffer)]; | |
3012 | unsigned short offset; | |
3013 | int ret; | |
3014 | ||
3015 | cdinfo(CD_DO_IOCTL, "entering CDROMVOLUME\n"); | |
1da177e4 | 3016 | |
3147c531 | 3017 | IOCTL_IN(arg, struct cdrom_volctrl, volctrl); |
1da177e4 | 3018 | |
3147c531 MS |
3019 | cgc->buffer = buffer; |
3020 | cgc->buflen = 24; | |
3021 | ret = cdrom_mode_sense(cdi, cgc, GPMODE_AUDIO_CTL_PAGE, 0); | |
3022 | if (ret) | |
3023 | return ret; | |
1da177e4 | 3024 | |
3147c531 MS |
3025 | /* originally the code depended on buffer[1] to determine |
3026 | how much data is available for transfer. buffer[1] is | |
3027 | unfortunately ambigious and the only reliable way seem | |
3028 | to be to simply skip over the block descriptor... */ | |
3029 | offset = 8 + be16_to_cpu(*(__be16 *)(buffer + 6)); | |
3030 | ||
3031 | if (offset + 16 > sizeof(buffer)) | |
3032 | return -E2BIG; | |
3033 | ||
3034 | if (offset + 16 > cgc->buflen) { | |
3035 | cgc->buflen = offset + 16; | |
3036 | ret = cdrom_mode_sense(cdi, cgc, | |
3037 | GPMODE_AUDIO_CTL_PAGE, 0); | |
3038 | if (ret) | |
3039 | return ret; | |
3040 | } | |
1da177e4 | 3041 | |
3147c531 MS |
3042 | /* sanity check */ |
3043 | if ((buffer[offset] & 0x3f) != GPMODE_AUDIO_CTL_PAGE || | |
3044 | buffer[offset + 1] < 14) | |
3045 | return -EINVAL; | |
1da177e4 | 3046 | |
3147c531 MS |
3047 | /* now we have the current volume settings. if it was only |
3048 | a CDROMVOLREAD, return these values */ | |
3049 | if (cmd == CDROMVOLREAD) { | |
3050 | volctrl.channel0 = buffer[offset+9]; | |
3051 | volctrl.channel1 = buffer[offset+11]; | |
3052 | volctrl.channel2 = buffer[offset+13]; | |
3053 | volctrl.channel3 = buffer[offset+15]; | |
3054 | IOCTL_OUT(arg, struct cdrom_volctrl, volctrl); | |
3055 | return 0; | |
3056 | } | |
1da177e4 | 3057 | |
3147c531 MS |
3058 | /* get the volume mask */ |
3059 | cgc->buffer = mask; | |
3060 | ret = cdrom_mode_sense(cdi, cgc, GPMODE_AUDIO_CTL_PAGE, 1); | |
3061 | if (ret) | |
3062 | return ret; | |
1da177e4 | 3063 | |
3147c531 MS |
3064 | buffer[offset + 9] = volctrl.channel0 & mask[offset + 9]; |
3065 | buffer[offset + 11] = volctrl.channel1 & mask[offset + 11]; | |
3066 | buffer[offset + 13] = volctrl.channel2 & mask[offset + 13]; | |
3067 | buffer[offset + 15] = volctrl.channel3 & mask[offset + 15]; | |
1da177e4 | 3068 | |
3147c531 MS |
3069 | /* set volume */ |
3070 | cgc->buffer = buffer + offset - 8; | |
3071 | memset(cgc->buffer, 0, 8); | |
3072 | return cdrom_mode_select(cdi, cgc); | |
3073 | } | |
1da177e4 | 3074 | |
3147c531 MS |
3075 | static noinline int mmc_ioctl_cdrom_start_stop(struct cdrom_device_info *cdi, |
3076 | struct packet_command *cgc, | |
3077 | int cmd) | |
3078 | { | |
3079 | struct cdrom_device_ops *cdo = cdi->ops; | |
3080 | cdinfo(CD_DO_IOCTL, "entering CDROMSTART/CDROMSTOP\n"); | |
3081 | cgc->cmd[0] = GPCMD_START_STOP_UNIT; | |
3082 | cgc->cmd[1] = 1; | |
3083 | cgc->cmd[4] = (cmd == CDROMSTART) ? 1 : 0; | |
3084 | cgc->data_direction = CGC_DATA_NONE; | |
3085 | return cdo->generic_packet(cdi, cgc); | |
3086 | } | |
1da177e4 | 3087 | |
3147c531 MS |
3088 | static noinline int mmc_ioctl_cdrom_pause_resume(struct cdrom_device_info *cdi, |
3089 | struct packet_command *cgc, | |
3090 | int cmd) | |
3091 | { | |
3092 | struct cdrom_device_ops *cdo = cdi->ops; | |
3093 | cdinfo(CD_DO_IOCTL, "entering CDROMPAUSE/CDROMRESUME\n"); | |
3094 | cgc->cmd[0] = GPCMD_PAUSE_RESUME; | |
3095 | cgc->cmd[8] = (cmd == CDROMRESUME) ? 1 : 0; | |
3096 | cgc->data_direction = CGC_DATA_NONE; | |
3097 | return cdo->generic_packet(cdi, cgc); | |
3098 | } | |
1da177e4 | 3099 | |
3147c531 | 3100 | static noinline int mmc_ioctl_dvd_read_struct(struct cdrom_device_info *cdi, |
d194139c MS |
3101 | void __user *arg, |
3102 | struct packet_command *cgc) | |
3147c531 MS |
3103 | { |
3104 | int ret; | |
3105 | dvd_struct *s; | |
3106 | int size = sizeof(dvd_struct); | |
3107 | ||
3108 | if (!CDROM_CAN(CDC_DVD)) | |
3109 | return -ENOSYS; | |
3110 | ||
3111 | s = kmalloc(size, GFP_KERNEL); | |
3112 | if (!s) | |
3113 | return -ENOMEM; | |
3114 | ||
3115 | cdinfo(CD_DO_IOCTL, "entering DVD_READ_STRUCT\n"); | |
3116 | if (copy_from_user(s, arg, size)) { | |
1da177e4 | 3117 | kfree(s); |
3147c531 MS |
3118 | return -EFAULT; |
3119 | } | |
3120 | ||
d194139c | 3121 | ret = dvd_read_struct(cdi, s, cgc); |
3147c531 MS |
3122 | if (ret) |
3123 | goto out; | |
3124 | ||
3125 | if (copy_to_user(arg, s, size)) | |
3126 | ret = -EFAULT; | |
3127 | out: | |
3128 | kfree(s); | |
3129 | return ret; | |
3130 | } | |
3131 | ||
3132 | static noinline int mmc_ioctl_dvd_auth(struct cdrom_device_info *cdi, | |
3133 | void __user *arg) | |
3134 | { | |
3135 | int ret; | |
3136 | dvd_authinfo ai; | |
3137 | if (!CDROM_CAN(CDC_DVD)) | |
3138 | return -ENOSYS; | |
3139 | cdinfo(CD_DO_IOCTL, "entering DVD_AUTH\n"); | |
3140 | IOCTL_IN(arg, dvd_authinfo, ai); | |
3141 | ret = dvd_do_auth(cdi, &ai); | |
3142 | if (ret) | |
1da177e4 | 3143 | return ret; |
3147c531 MS |
3144 | IOCTL_OUT(arg, dvd_authinfo, ai); |
3145 | return 0; | |
3146 | } | |
1da177e4 | 3147 | |
3147c531 MS |
3148 | static noinline int mmc_ioctl_cdrom_next_writable(struct cdrom_device_info *cdi, |
3149 | void __user *arg) | |
3150 | { | |
3151 | int ret; | |
3152 | long next = 0; | |
3153 | cdinfo(CD_DO_IOCTL, "entering CDROM_NEXT_WRITABLE\n"); | |
3154 | ret = cdrom_get_next_writable(cdi, &next); | |
3155 | if (ret) | |
3156 | return ret; | |
3157 | IOCTL_OUT(arg, long, next); | |
3158 | return 0; | |
3159 | } | |
1da177e4 | 3160 | |
3147c531 MS |
3161 | static noinline int mmc_ioctl_cdrom_last_written(struct cdrom_device_info *cdi, |
3162 | void __user *arg) | |
3163 | { | |
3164 | int ret; | |
3165 | long last = 0; | |
3166 | cdinfo(CD_DO_IOCTL, "entering CDROM_LAST_WRITTEN\n"); | |
3167 | ret = cdrom_get_last_written(cdi, &last); | |
3168 | if (ret) | |
3169 | return ret; | |
3170 | IOCTL_OUT(arg, long, last); | |
3171 | return 0; | |
3172 | } | |
3173 | ||
3174 | static int mmc_ioctl(struct cdrom_device_info *cdi, unsigned int cmd, | |
3175 | unsigned long arg) | |
3176 | { | |
3177 | struct packet_command cgc; | |
3178 | void __user *userptr = (void __user *)arg; | |
3179 | ||
3180 | memset(&cgc, 0, sizeof(cgc)); | |
3181 | ||
3182 | /* build a unified command and queue it through | |
3183 | cdo->generic_packet() */ | |
3184 | switch (cmd) { | |
3185 | case CDROMREADRAW: | |
3186 | case CDROMREADMODE1: | |
3187 | case CDROMREADMODE2: | |
3188 | return mmc_ioctl_cdrom_read_data(cdi, userptr, &cgc, cmd); | |
3189 | case CDROMREADAUDIO: | |
3190 | return mmc_ioctl_cdrom_read_audio(cdi, userptr); | |
3191 | case CDROMSUBCHNL: | |
3192 | return mmc_ioctl_cdrom_subchannel(cdi, userptr); | |
3193 | case CDROMPLAYMSF: | |
3194 | return mmc_ioctl_cdrom_play_msf(cdi, userptr, &cgc); | |
3195 | case CDROMPLAYBLK: | |
3196 | return mmc_ioctl_cdrom_play_blk(cdi, userptr, &cgc); | |
3197 | case CDROMVOLCTRL: | |
3198 | case CDROMVOLREAD: | |
3199 | return mmc_ioctl_cdrom_volume(cdi, userptr, &cgc, cmd); | |
3200 | case CDROMSTART: | |
3201 | case CDROMSTOP: | |
3202 | return mmc_ioctl_cdrom_start_stop(cdi, &cgc, cmd); | |
3203 | case CDROMPAUSE: | |
3204 | case CDROMRESUME: | |
3205 | return mmc_ioctl_cdrom_pause_resume(cdi, &cgc, cmd); | |
3206 | case DVD_READ_STRUCT: | |
d194139c | 3207 | return mmc_ioctl_dvd_read_struct(cdi, userptr, &cgc); |
3147c531 MS |
3208 | case DVD_AUTH: |
3209 | return mmc_ioctl_dvd_auth(cdi, userptr); | |
3210 | case CDROM_NEXT_WRITABLE: | |
3211 | return mmc_ioctl_cdrom_next_writable(cdi, userptr); | |
3212 | case CDROM_LAST_WRITTEN: | |
3213 | return mmc_ioctl_cdrom_last_written(cdi, userptr); | |
3214 | } | |
1da177e4 LT |
3215 | |
3216 | return -ENOTTY; | |
3217 | } | |
3218 | ||
3219 | static int cdrom_get_track_info(struct cdrom_device_info *cdi, __u16 track, __u8 type, | |
3220 | track_information *ti) | |
3221 | { | |
3222 | struct cdrom_device_ops *cdo = cdi->ops; | |
3223 | struct packet_command cgc; | |
3224 | int ret, buflen; | |
3225 | ||
3226 | init_cdrom_command(&cgc, ti, 8, CGC_DATA_READ); | |
3227 | cgc.cmd[0] = GPCMD_READ_TRACK_RZONE_INFO; | |
3228 | cgc.cmd[1] = type & 3; | |
3229 | cgc.cmd[4] = (track & 0xff00) >> 8; | |
3230 | cgc.cmd[5] = track & 0xff; | |
3231 | cgc.cmd[8] = 8; | |
3232 | cgc.quiet = 1; | |
3233 | ||
3234 | if ((ret = cdo->generic_packet(cdi, &cgc))) | |
3235 | return ret; | |
3236 | ||
3237 | buflen = be16_to_cpu(ti->track_information_length) + | |
3238 | sizeof(ti->track_information_length); | |
3239 | ||
3240 | if (buflen > sizeof(track_information)) | |
3241 | buflen = sizeof(track_information); | |
3242 | ||
3243 | cgc.cmd[8] = cgc.buflen = buflen; | |
3244 | if ((ret = cdo->generic_packet(cdi, &cgc))) | |
3245 | return ret; | |
3246 | ||
3247 | /* return actual fill size */ | |
3248 | return buflen; | |
3249 | } | |
3250 | ||
3251 | /* requires CD R/RW */ | |
3252 | static int cdrom_get_disc_info(struct cdrom_device_info *cdi, disc_information *di) | |
3253 | { | |
3254 | struct cdrom_device_ops *cdo = cdi->ops; | |
3255 | struct packet_command cgc; | |
3256 | int ret, buflen; | |
3257 | ||
3258 | /* set up command and get the disc info */ | |
3259 | init_cdrom_command(&cgc, di, sizeof(*di), CGC_DATA_READ); | |
3260 | cgc.cmd[0] = GPCMD_READ_DISC_INFO; | |
3261 | cgc.cmd[8] = cgc.buflen = 2; | |
3262 | cgc.quiet = 1; | |
3263 | ||
3264 | if ((ret = cdo->generic_packet(cdi, &cgc))) | |
3265 | return ret; | |
3266 | ||
3267 | /* not all drives have the same disc_info length, so requeue | |
3268 | * packet with the length the drive tells us it can supply | |
3269 | */ | |
3270 | buflen = be16_to_cpu(di->disc_information_length) + | |
3271 | sizeof(di->disc_information_length); | |
3272 | ||
3273 | if (buflen > sizeof(disc_information)) | |
3274 | buflen = sizeof(disc_information); | |
3275 | ||
3276 | cgc.cmd[8] = cgc.buflen = buflen; | |
3277 | if ((ret = cdo->generic_packet(cdi, &cgc))) | |
3278 | return ret; | |
3279 | ||
3280 | /* return actual fill size */ | |
3281 | return buflen; | |
3282 | } | |
3283 | ||
3284 | /* return the last written block on the CD-R media. this is for the udf | |
3285 | file system. */ | |
3286 | int cdrom_get_last_written(struct cdrom_device_info *cdi, long *last_written) | |
3287 | { | |
3288 | struct cdrom_tocentry toc; | |
3289 | disc_information di; | |
3290 | track_information ti; | |
3291 | __u32 last_track; | |
3292 | int ret = -1, ti_size; | |
3293 | ||
3294 | if (!CDROM_CAN(CDC_GENERIC_PACKET)) | |
3295 | goto use_toc; | |
3296 | ||
3297 | ret = cdrom_get_disc_info(cdi, &di); | |
3298 | if (ret < (int)(offsetof(typeof(di), last_track_lsb) | |
3299 | + sizeof(di.last_track_lsb))) | |
3300 | goto use_toc; | |
3301 | ||
3302 | /* if unit didn't return msb, it's zeroed by cdrom_get_disc_info */ | |
3303 | last_track = (di.last_track_msb << 8) | di.last_track_lsb; | |
3304 | ti_size = cdrom_get_track_info(cdi, last_track, 1, &ti); | |
3305 | if (ti_size < (int)offsetof(typeof(ti), track_start)) | |
3306 | goto use_toc; | |
3307 | ||
3308 | /* if this track is blank, try the previous. */ | |
3309 | if (ti.blank) { | |
3310 | if (last_track==1) | |
3311 | goto use_toc; | |
3312 | last_track--; | |
3313 | ti_size = cdrom_get_track_info(cdi, last_track, 1, &ti); | |
3314 | } | |
3315 | ||
3316 | if (ti_size < (int)(offsetof(typeof(ti), track_size) | |
3317 | + sizeof(ti.track_size))) | |
3318 | goto use_toc; | |
3319 | ||
3320 | /* if last recorded field is valid, return it. */ | |
3321 | if (ti.lra_v && ti_size >= (int)(offsetof(typeof(ti), last_rec_address) | |
3322 | + sizeof(ti.last_rec_address))) { | |
3323 | *last_written = be32_to_cpu(ti.last_rec_address); | |
3324 | } else { | |
3325 | /* make it up instead */ | |
3326 | *last_written = be32_to_cpu(ti.track_start) + | |
3327 | be32_to_cpu(ti.track_size); | |
3328 | if (ti.free_blocks) | |
3329 | *last_written -= (be32_to_cpu(ti.free_blocks) + 7); | |
3330 | } | |
3331 | return 0; | |
3332 | ||
3333 | /* this is where we end up if the drive either can't do a | |
3334 | GPCMD_READ_DISC_INFO or GPCMD_READ_TRACK_RZONE_INFO or if | |
3335 | it doesn't give enough information or fails. then we return | |
3336 | the toc contents. */ | |
3337 | use_toc: | |
3338 | toc.cdte_format = CDROM_MSF; | |
3339 | toc.cdte_track = CDROM_LEADOUT; | |
3340 | if ((ret = cdi->ops->audio_ioctl(cdi, CDROMREADTOCENTRY, &toc))) | |
3341 | return ret; | |
3342 | sanitize_format(&toc.cdte_addr, &toc.cdte_format, CDROM_LBA); | |
3343 | *last_written = toc.cdte_addr.lba; | |
3344 | return 0; | |
3345 | } | |
3346 | ||
3347 | /* return the next writable block. also for udf file system. */ | |
3348 | static int cdrom_get_next_writable(struct cdrom_device_info *cdi, long *next_writable) | |
3349 | { | |
3350 | disc_information di; | |
3351 | track_information ti; | |
3352 | __u16 last_track; | |
3353 | int ret, ti_size; | |
3354 | ||
3355 | if (!CDROM_CAN(CDC_GENERIC_PACKET)) | |
3356 | goto use_last_written; | |
3357 | ||
3358 | ret = cdrom_get_disc_info(cdi, &di); | |
3359 | if (ret < 0 || ret < offsetof(typeof(di), last_track_lsb) | |
3360 | + sizeof(di.last_track_lsb)) | |
3361 | goto use_last_written; | |
3362 | ||
3363 | /* if unit didn't return msb, it's zeroed by cdrom_get_disc_info */ | |
3364 | last_track = (di.last_track_msb << 8) | di.last_track_lsb; | |
3365 | ti_size = cdrom_get_track_info(cdi, last_track, 1, &ti); | |
3366 | if (ti_size < 0 || ti_size < offsetof(typeof(ti), track_start)) | |
3367 | goto use_last_written; | |
3368 | ||
3369 | /* if this track is blank, try the previous. */ | |
3370 | if (ti.blank) { | |
3371 | if (last_track == 1) | |
3372 | goto use_last_written; | |
3373 | last_track--; | |
3374 | ti_size = cdrom_get_track_info(cdi, last_track, 1, &ti); | |
3375 | if (ti_size < 0) | |
3376 | goto use_last_written; | |
3377 | } | |
3378 | ||
3379 | /* if next recordable address field is valid, use it. */ | |
3380 | if (ti.nwa_v && ti_size >= offsetof(typeof(ti), next_writable) | |
3381 | + sizeof(ti.next_writable)) { | |
3382 | *next_writable = be32_to_cpu(ti.next_writable); | |
3383 | return 0; | |
3384 | } | |
3385 | ||
3386 | use_last_written: | |
3387 | if ((ret = cdrom_get_last_written(cdi, next_writable))) { | |
3388 | *next_writable = 0; | |
3389 | return ret; | |
3390 | } else { | |
3391 | *next_writable += 7; | |
3392 | return 0; | |
3393 | } | |
3394 | } | |
3395 | ||
3396 | EXPORT_SYMBOL(cdrom_get_last_written); | |
3397 | EXPORT_SYMBOL(register_cdrom); | |
3398 | EXPORT_SYMBOL(unregister_cdrom); | |
3399 | EXPORT_SYMBOL(cdrom_open); | |
3400 | EXPORT_SYMBOL(cdrom_release); | |
3401 | EXPORT_SYMBOL(cdrom_ioctl); | |
3402 | EXPORT_SYMBOL(cdrom_media_changed); | |
3403 | EXPORT_SYMBOL(cdrom_number_of_slots); | |
3404 | EXPORT_SYMBOL(cdrom_mode_select); | |
3405 | EXPORT_SYMBOL(cdrom_mode_sense); | |
3406 | EXPORT_SYMBOL(init_cdrom_command); | |
3407 | EXPORT_SYMBOL(cdrom_get_media_event); | |
3408 | ||
3409 | #ifdef CONFIG_SYSCTL | |
3410 | ||
3411 | #define CDROM_STR_SIZE 1000 | |
3412 | ||
3413 | static struct cdrom_sysctl_settings { | |
3414 | char info[CDROM_STR_SIZE]; /* general info */ | |
3415 | int autoclose; /* close tray upon mount, etc */ | |
3416 | int autoeject; /* eject on umount */ | |
3417 | int debug; /* turn on debugging messages */ | |
3418 | int lock; /* lock the door on device open */ | |
3419 | int check; /* check media type */ | |
3420 | } cdrom_sysctl_settings; | |
3421 | ||
554988d6 DY |
3422 | enum cdrom_print_option { |
3423 | CTL_NAME, | |
3424 | CTL_SPEED, | |
3425 | CTL_SLOTS, | |
3426 | CTL_CAPABILITY | |
3427 | }; | |
3428 | ||
3429 | static int cdrom_print_info(const char *header, int val, char *info, | |
3430 | int *pos, enum cdrom_print_option option) | |
3431 | { | |
3432 | const int max_size = sizeof(cdrom_sysctl_settings.info); | |
3433 | struct cdrom_device_info *cdi; | |
3434 | int ret; | |
3435 | ||
3436 | ret = scnprintf(info + *pos, max_size - *pos, header); | |
3437 | if (!ret) | |
3438 | return 1; | |
3439 | ||
3440 | *pos += ret; | |
3441 | ||
7fd097d4 | 3442 | list_for_each_entry(cdi, &cdrom_list, list) { |
554988d6 DY |
3443 | switch (option) { |
3444 | case CTL_NAME: | |
3445 | ret = scnprintf(info + *pos, max_size - *pos, | |
3446 | "\t%s", cdi->name); | |
3447 | break; | |
3448 | case CTL_SPEED: | |
3449 | ret = scnprintf(info + *pos, max_size - *pos, | |
3450 | "\t%d", cdi->speed); | |
3451 | break; | |
3452 | case CTL_SLOTS: | |
3453 | ret = scnprintf(info + *pos, max_size - *pos, | |
3454 | "\t%d", cdi->capacity); | |
3455 | break; | |
3456 | case CTL_CAPABILITY: | |
3457 | ret = scnprintf(info + *pos, max_size - *pos, | |
3458 | "\t%d", CDROM_CAN(val) != 0); | |
3459 | break; | |
3460 | default: | |
e597cd09 | 3461 | pr_info("invalid option%d\n", option); |
554988d6 DY |
3462 | return 1; |
3463 | } | |
3464 | if (!ret) | |
3465 | return 1; | |
3466 | *pos += ret; | |
3467 | } | |
3468 | ||
3469 | return 0; | |
3470 | } | |
3471 | ||
8d65af78 | 3472 | static int cdrom_sysctl_info(ctl_table *ctl, int write, |
1da177e4 LT |
3473 | void __user *buffer, size_t *lenp, loff_t *ppos) |
3474 | { | |
554988d6 | 3475 | int pos; |
1da177e4 | 3476 | char *info = cdrom_sysctl_settings.info; |
554988d6 | 3477 | const int max_size = sizeof(cdrom_sysctl_settings.info); |
1da177e4 LT |
3478 | |
3479 | if (!*lenp || (*ppos && !write)) { | |
3480 | *lenp = 0; | |
3481 | return 0; | |
3482 | } | |
3483 | ||
554988d6 DY |
3484 | mutex_lock(&cdrom_mutex); |
3485 | ||
1da177e4 LT |
3486 | pos = sprintf(info, "CD-ROM information, " VERSION "\n"); |
3487 | ||
554988d6 DY |
3488 | if (cdrom_print_info("\ndrive name:\t", 0, info, &pos, CTL_NAME)) |
3489 | goto done; | |
3490 | if (cdrom_print_info("\ndrive speed:\t", 0, info, &pos, CTL_SPEED)) | |
3491 | goto done; | |
3492 | if (cdrom_print_info("\ndrive # of slots:", 0, info, &pos, CTL_SLOTS)) | |
3493 | goto done; | |
3494 | if (cdrom_print_info("\nCan close tray:\t", | |
3495 | CDC_CLOSE_TRAY, info, &pos, CTL_CAPABILITY)) | |
3496 | goto done; | |
3497 | if (cdrom_print_info("\nCan open tray:\t", | |
3498 | CDC_OPEN_TRAY, info, &pos, CTL_CAPABILITY)) | |
3499 | goto done; | |
3500 | if (cdrom_print_info("\nCan lock tray:\t", | |
3501 | CDC_LOCK, info, &pos, CTL_CAPABILITY)) | |
3502 | goto done; | |
3503 | if (cdrom_print_info("\nCan change speed:", | |
3504 | CDC_SELECT_SPEED, info, &pos, CTL_CAPABILITY)) | |
3505 | goto done; | |
3506 | if (cdrom_print_info("\nCan select disk:", | |
3507 | CDC_SELECT_DISC, info, &pos, CTL_CAPABILITY)) | |
3508 | goto done; | |
3509 | if (cdrom_print_info("\nCan read multisession:", | |
3510 | CDC_MULTI_SESSION, info, &pos, CTL_CAPABILITY)) | |
3511 | goto done; | |
3512 | if (cdrom_print_info("\nCan read MCN:\t", | |
3513 | CDC_MCN, info, &pos, CTL_CAPABILITY)) | |
3514 | goto done; | |
3515 | if (cdrom_print_info("\nReports media changed:", | |
3516 | CDC_MEDIA_CHANGED, info, &pos, CTL_CAPABILITY)) | |
3517 | goto done; | |
3518 | if (cdrom_print_info("\nCan play audio:\t", | |
3519 | CDC_PLAY_AUDIO, info, &pos, CTL_CAPABILITY)) | |
3520 | goto done; | |
3521 | if (cdrom_print_info("\nCan write CD-R:\t", | |
3522 | CDC_CD_R, info, &pos, CTL_CAPABILITY)) | |
3523 | goto done; | |
3524 | if (cdrom_print_info("\nCan write CD-RW:", | |
3525 | CDC_CD_RW, info, &pos, CTL_CAPABILITY)) | |
3526 | goto done; | |
3527 | if (cdrom_print_info("\nCan read DVD:\t", | |
3528 | CDC_DVD, info, &pos, CTL_CAPABILITY)) | |
3529 | goto done; | |
3530 | if (cdrom_print_info("\nCan write DVD-R:", | |
3531 | CDC_DVD_R, info, &pos, CTL_CAPABILITY)) | |
3532 | goto done; | |
3533 | if (cdrom_print_info("\nCan write DVD-RAM:", | |
3534 | CDC_DVD_RAM, info, &pos, CTL_CAPABILITY)) | |
3535 | goto done; | |
3536 | if (cdrom_print_info("\nCan read MRW:\t", | |
3537 | CDC_MRW, info, &pos, CTL_CAPABILITY)) | |
3538 | goto done; | |
3539 | if (cdrom_print_info("\nCan write MRW:\t", | |
3540 | CDC_MRW_W, info, &pos, CTL_CAPABILITY)) | |
3541 | goto done; | |
3542 | if (cdrom_print_info("\nCan write RAM:\t", | |
3543 | CDC_RAM, info, &pos, CTL_CAPABILITY)) | |
3544 | goto done; | |
3545 | if (!scnprintf(info + pos, max_size - pos, "\n\n")) | |
3546 | goto done; | |
3547 | doit: | |
3548 | mutex_unlock(&cdrom_mutex); | |
8d65af78 | 3549 | return proc_dostring(ctl, write, buffer, lenp, ppos); |
554988d6 | 3550 | done: |
e597cd09 | 3551 | pr_info("info buffer too small\n"); |
554988d6 | 3552 | goto doit; |
1da177e4 LT |
3553 | } |
3554 | ||
3555 | /* Unfortunately, per device settings are not implemented through | |
3556 | procfs/sysctl yet. When they are, this will naturally disappear. For now | |
3557 | just update all drives. Later this will become the template on which | |
3558 | new registered drives will be based. */ | |
3559 | static void cdrom_update_settings(void) | |
3560 | { | |
3561 | struct cdrom_device_info *cdi; | |
3562 | ||
032d8d90 | 3563 | mutex_lock(&cdrom_mutex); |
7fd097d4 | 3564 | list_for_each_entry(cdi, &cdrom_list, list) { |
1da177e4 LT |
3565 | if (autoclose && CDROM_CAN(CDC_CLOSE_TRAY)) |
3566 | cdi->options |= CDO_AUTO_CLOSE; | |
3567 | else if (!autoclose) | |
3568 | cdi->options &= ~CDO_AUTO_CLOSE; | |
3569 | if (autoeject && CDROM_CAN(CDC_OPEN_TRAY)) | |
3570 | cdi->options |= CDO_AUTO_EJECT; | |
3571 | else if (!autoeject) | |
3572 | cdi->options &= ~CDO_AUTO_EJECT; | |
3573 | if (lockdoor && CDROM_CAN(CDC_LOCK)) | |
3574 | cdi->options |= CDO_LOCK; | |
3575 | else if (!lockdoor) | |
3576 | cdi->options &= ~CDO_LOCK; | |
3577 | if (check_media_type) | |
3578 | cdi->options |= CDO_CHECK_TYPE; | |
3579 | else | |
3580 | cdi->options &= ~CDO_CHECK_TYPE; | |
3581 | } | |
032d8d90 | 3582 | mutex_unlock(&cdrom_mutex); |
1da177e4 LT |
3583 | } |
3584 | ||
8d65af78 | 3585 | static int cdrom_sysctl_handler(ctl_table *ctl, int write, |
1da177e4 LT |
3586 | void __user *buffer, size_t *lenp, loff_t *ppos) |
3587 | { | |
1da177e4 LT |
3588 | int ret; |
3589 | ||
8d65af78 | 3590 | ret = proc_dointvec(ctl, write, buffer, lenp, ppos); |
1da177e4 | 3591 | |
06489b4e | 3592 | if (write) { |
1da177e4 LT |
3593 | |
3594 | /* we only care for 1 or 0. */ | |
06489b4e EB |
3595 | autoclose = !!cdrom_sysctl_settings.autoclose; |
3596 | autoeject = !!cdrom_sysctl_settings.autoeject; | |
3597 | debug = !!cdrom_sysctl_settings.debug; | |
3598 | lockdoor = !!cdrom_sysctl_settings.lock; | |
3599 | check_media_type = !!cdrom_sysctl_settings.check; | |
1da177e4 | 3600 | |
1da177e4 LT |
3601 | /* update the option flags according to the changes. we |
3602 | don't have per device options through sysctl yet, | |
3603 | but we will have and then this will disappear. */ | |
3604 | cdrom_update_settings(); | |
3605 | } | |
3606 | ||
3607 | return ret; | |
3608 | } | |
3609 | ||
3610 | /* Place files in /proc/sys/dev/cdrom */ | |
3611 | static ctl_table cdrom_table[] = { | |
3612 | { | |
1da177e4 LT |
3613 | .procname = "info", |
3614 | .data = &cdrom_sysctl_settings.info, | |
3615 | .maxlen = CDROM_STR_SIZE, | |
3616 | .mode = 0444, | |
6d456111 | 3617 | .proc_handler = cdrom_sysctl_info, |
1da177e4 LT |
3618 | }, |
3619 | { | |
1da177e4 LT |
3620 | .procname = "autoclose", |
3621 | .data = &cdrom_sysctl_settings.autoclose, | |
3622 | .maxlen = sizeof(int), | |
3623 | .mode = 0644, | |
6d456111 | 3624 | .proc_handler = cdrom_sysctl_handler, |
1da177e4 LT |
3625 | }, |
3626 | { | |
1da177e4 LT |
3627 | .procname = "autoeject", |
3628 | .data = &cdrom_sysctl_settings.autoeject, | |
3629 | .maxlen = sizeof(int), | |
3630 | .mode = 0644, | |
6d456111 | 3631 | .proc_handler = cdrom_sysctl_handler, |
1da177e4 LT |
3632 | }, |
3633 | { | |
1da177e4 LT |
3634 | .procname = "debug", |
3635 | .data = &cdrom_sysctl_settings.debug, | |
3636 | .maxlen = sizeof(int), | |
3637 | .mode = 0644, | |
6d456111 | 3638 | .proc_handler = cdrom_sysctl_handler, |
1da177e4 LT |
3639 | }, |
3640 | { | |
1da177e4 LT |
3641 | .procname = "lock", |
3642 | .data = &cdrom_sysctl_settings.lock, | |
3643 | .maxlen = sizeof(int), | |
3644 | .mode = 0644, | |
6d456111 | 3645 | .proc_handler = cdrom_sysctl_handler, |
1da177e4 LT |
3646 | }, |
3647 | { | |
1da177e4 LT |
3648 | .procname = "check_media", |
3649 | .data = &cdrom_sysctl_settings.check, | |
3650 | .maxlen = sizeof(int), | |
3651 | .mode = 0644, | |
6d456111 | 3652 | .proc_handler = cdrom_sysctl_handler |
1da177e4 | 3653 | }, |
894d2491 | 3654 | { } |
1da177e4 LT |
3655 | }; |
3656 | ||
3657 | static ctl_table cdrom_cdrom_table[] = { | |
3658 | { | |
1da177e4 LT |
3659 | .procname = "cdrom", |
3660 | .maxlen = 0, | |
3661 | .mode = 0555, | |
3662 | .child = cdrom_table, | |
3663 | }, | |
894d2491 | 3664 | { } |
1da177e4 LT |
3665 | }; |
3666 | ||
3667 | /* Make sure that /proc/sys/dev is there */ | |
3668 | static ctl_table cdrom_root_table[] = { | |
3669 | { | |
1da177e4 LT |
3670 | .procname = "dev", |
3671 | .maxlen = 0, | |
3672 | .mode = 0555, | |
3673 | .child = cdrom_cdrom_table, | |
3674 | }, | |
894d2491 | 3675 | { } |
1da177e4 LT |
3676 | }; |
3677 | static struct ctl_table_header *cdrom_sysctl_header; | |
3678 | ||
3679 | static void cdrom_sysctl_register(void) | |
3680 | { | |
3681 | static int initialized; | |
3682 | ||
3683 | if (initialized == 1) | |
3684 | return; | |
3685 | ||
0b4d4147 | 3686 | cdrom_sysctl_header = register_sysctl_table(cdrom_root_table); |
1da177e4 LT |
3687 | |
3688 | /* set the defaults */ | |
3689 | cdrom_sysctl_settings.autoclose = autoclose; | |
3690 | cdrom_sysctl_settings.autoeject = autoeject; | |
3691 | cdrom_sysctl_settings.debug = debug; | |
3692 | cdrom_sysctl_settings.lock = lockdoor; | |
3693 | cdrom_sysctl_settings.check = check_media_type; | |
3694 | ||
3695 | initialized = 1; | |
3696 | } | |
3697 | ||
3698 | static void cdrom_sysctl_unregister(void) | |
3699 | { | |
3700 | if (cdrom_sysctl_header) | |
3701 | unregister_sysctl_table(cdrom_sysctl_header); | |
3702 | } | |
3703 | ||
17672cf0 AM |
3704 | #else /* CONFIG_SYSCTL */ |
3705 | ||
3706 | static void cdrom_sysctl_register(void) | |
3707 | { | |
3708 | } | |
3709 | ||
3710 | static void cdrom_sysctl_unregister(void) | |
3711 | { | |
3712 | } | |
3713 | ||
1da177e4 LT |
3714 | #endif /* CONFIG_SYSCTL */ |
3715 | ||
3716 | static int __init cdrom_init(void) | |
3717 | { | |
1da177e4 | 3718 | cdrom_sysctl_register(); |
17672cf0 | 3719 | |
1da177e4 LT |
3720 | return 0; |
3721 | } | |
3722 | ||
3723 | static void __exit cdrom_exit(void) | |
3724 | { | |
e597cd09 | 3725 | pr_info("Uniform CD-ROM driver unloaded\n"); |
1da177e4 | 3726 | cdrom_sysctl_unregister(); |
1da177e4 LT |
3727 | } |
3728 | ||
3729 | module_init(cdrom_init); | |
3730 | module_exit(cdrom_exit); | |
3731 | MODULE_LICENSE("GPL"); |