Commit | Line | Data |
---|---|---|
f30c2269 | 1 | /* linux/drivers/cdrom/cdrom.c |
1da177e4 LT |
2 | Copyright (c) 1996, 1997 David A. van Leeuwen. |
3 | Copyright (c) 1997, 1998 Erik Andersen <andersee@debian.org> | |
4 | Copyright (c) 1998, 1999 Jens Axboe <axboe@image.dk> | |
5 | ||
6 | May be copied or modified under the terms of the GNU General Public | |
7 | License. See linux/COPYING for more information. | |
8 | ||
9 | Uniform CD-ROM driver for Linux. | |
10 | See Documentation/cdrom/cdrom-standard.tex for usage information. | |
11 | ||
12 | The routines in the file provide a uniform interface between the | |
13 | software that uses CD-ROMs and the various low-level drivers that | |
14 | actually talk to the hardware. Suggestions are welcome. | |
15 | Patches that work are more welcome though. ;-) | |
16 | ||
17 | To Do List: | |
18 | ---------------------------------- | |
19 | ||
20 | -- Modify sysctl/proc interface. I plan on having one directory per | |
21 | drive, with entries for outputing general drive information, and sysctl | |
22 | based tunable parameters such as whether the tray should auto-close for | |
23 | that drive. Suggestions (or patches) for this welcome! | |
24 | ||
25 | ||
26 | Revision History | |
27 | ---------------------------------- | |
28 | 1.00 Date Unknown -- David van Leeuwen <david@tm.tno.nl> | |
29 | -- Initial version by David A. van Leeuwen. I don't have a detailed | |
30 | changelog for the 1.x series, David? | |
31 | ||
32 | 2.00 Dec 2, 1997 -- Erik Andersen <andersee@debian.org> | |
33 | -- New maintainer! As David A. van Leeuwen has been too busy to activly | |
34 | maintain and improve this driver, I am now carrying on the torch. If | |
35 | you have a problem with this driver, please feel free to contact me. | |
36 | ||
37 | -- Added (rudimentary) sysctl interface. I realize this is really weak | |
38 | right now, and is _very_ badly implemented. It will be improved... | |
39 | ||
40 | -- Modified CDROM_DISC_STATUS so that it is now incorporated into | |
41 | the Uniform CD-ROM driver via the cdrom_count_tracks function. | |
42 | The cdrom_count_tracks function helps resolve some of the false | |
43 | assumptions of the CDROM_DISC_STATUS ioctl, and is also used to check | |
44 | for the correct media type when mounting or playing audio from a CD. | |
45 | ||
46 | -- Remove the calls to verify_area and only use the copy_from_user and | |
47 | copy_to_user stuff, since these calls now provide their own memory | |
48 | checking with the 2.1.x kernels. | |
49 | ||
50 | -- Major update to return codes so that errors from low-level drivers | |
51 | are passed on through (thanks to Gerd Knorr for pointing out this | |
52 | problem). | |
53 | ||
54 | -- Made it so if a function isn't implemented in a low-level driver, | |
55 | ENOSYS is now returned instead of EINVAL. | |
56 | ||
57 | -- Simplified some complex logic so that the source code is easier to read. | |
58 | ||
59 | -- Other stuff I probably forgot to mention (lots of changes). | |
60 | ||
61 | 2.01 to 2.11 Dec 1997-Jan 1998 | |
62 | -- TO-DO! Write changelogs for 2.01 to 2.12. | |
63 | ||
64 | 2.12 Jan 24, 1998 -- Erik Andersen <andersee@debian.org> | |
65 | -- Fixed a bug in the IOCTL_IN and IOCTL_OUT macros. It turns out that | |
66 | copy_*_user does not return EFAULT on error, but instead returns the number | |
67 | of bytes not copied. I was returning whatever non-zero stuff came back from | |
68 | the copy_*_user functions directly, which would result in strange errors. | |
69 | ||
70 | 2.13 July 17, 1998 -- Erik Andersen <andersee@debian.org> | |
71 | -- Fixed a bug in CDROM_SELECT_SPEED where you couldn't lower the speed | |
72 | of the drive. Thanks to Tobias Ringstr|m <tori@prosolvia.se> for pointing | |
73 | this out and providing a simple fix. | |
74 | -- Fixed the procfs-unload-module bug with the fill_inode procfs callback. | |
75 | thanks to Andrea Arcangeli | |
76 | -- Fixed it so that the /proc entry now also shows up when cdrom is | |
77 | compiled into the kernel. Before it only worked when loaded as a module. | |
78 | ||
79 | 2.14 August 17, 1998 -- Erik Andersen <andersee@debian.org> | |
80 | -- Fixed a bug in cdrom_media_changed and handling of reporting that | |
81 | the media had changed for devices that _don't_ implement media_changed. | |
82 | Thanks to Grant R. Guenther <grant@torque.net> for spotting this bug. | |
83 | -- Made a few things more pedanticly correct. | |
84 | ||
85 | 2.50 Oct 19, 1998 - Jens Axboe <axboe@image.dk> | |
86 | -- New maintainers! Erik was too busy to continue the work on the driver, | |
87 | so now Chris Zwilling <chris@cloudnet.com> and Jens Axboe <axboe@image.dk> | |
88 | will do their best to follow in his footsteps | |
89 | ||
90 | 2.51 Dec 20, 1998 - Jens Axboe <axboe@image.dk> | |
91 | -- Check if drive is capable of doing what we ask before blindly changing | |
92 | cdi->options in various ioctl. | |
93 | -- Added version to proc entry. | |
94 | ||
95 | 2.52 Jan 16, 1999 - Jens Axboe <axboe@image.dk> | |
96 | -- Fixed an error in open_for_data where we would sometimes not return | |
97 | the correct error value. Thanks Huba Gaspar <huba@softcell.hu>. | |
98 | -- Fixed module usage count - usage was based on /proc/sys/dev | |
99 | instead of /proc/sys/dev/cdrom. This could lead to an oops when other | |
100 | modules had entries in dev. Feb 02 - real bug was in sysctl.c where | |
101 | dev would be removed even though it was used. cdrom.c just illuminated | |
102 | that bug. | |
103 | ||
104 | 2.53 Feb 22, 1999 - Jens Axboe <axboe@image.dk> | |
105 | -- Fixup of several ioctl calls, in particular CDROM_SET_OPTIONS has | |
106 | been "rewritten" because capabilities and options aren't in sync. They | |
107 | should be... | |
108 | -- Added CDROM_LOCKDOOR ioctl. Locks the door and keeps it that way. | |
109 | -- Added CDROM_RESET ioctl. | |
110 | -- Added CDROM_DEBUG ioctl. Enable debug messages on-the-fly. | |
111 | -- Added CDROM_GET_CAPABILITY ioctl. This relieves userspace programs | |
112 | from parsing /proc/sys/dev/cdrom/info. | |
113 | ||
114 | 2.54 Mar 15, 1999 - Jens Axboe <axboe@image.dk> | |
115 | -- Check capability mask from low level driver when counting tracks as | |
116 | per suggestion from Corey J. Scotts <cstotts@blue.weeg.uiowa.edu>. | |
117 | ||
118 | 2.55 Apr 25, 1999 - Jens Axboe <axboe@image.dk> | |
119 | -- autoclose was mistakenly checked against CDC_OPEN_TRAY instead of | |
120 | CDC_CLOSE_TRAY. | |
121 | -- proc info didn't mask against capabilities mask. | |
122 | ||
123 | 3.00 Aug 5, 1999 - Jens Axboe <axboe@image.dk> | |
124 | -- Unified audio ioctl handling across CD-ROM drivers. A lot of the | |
125 | code was duplicated before. Drives that support the generic packet | |
126 | interface are now being fed packets from here instead. | |
127 | -- First attempt at adding support for MMC2 commands - for DVD and | |
128 | CD-R(W) drives. Only the DVD parts are in now - the interface used is | |
129 | the same as for the audio ioctls. | |
130 | -- ioctl cleanups. if a drive couldn't play audio, it didn't get | |
131 | a change to perform device specific ioctls as well. | |
132 | -- Defined CDROM_CAN(CDC_XXX) for checking the capabilities. | |
133 | -- Put in sysctl files for autoclose, autoeject, check_media, debug, | |
134 | and lock. | |
135 | -- /proc/sys/dev/cdrom/info has been updated to also contain info about | |
136 | CD-Rx and DVD capabilities. | |
137 | -- Now default to checking media type. | |
138 | -- CDROM_SEND_PACKET ioctl added. The infrastructure was in place for | |
139 | doing this anyway, with the generic_packet addition. | |
140 | ||
141 | 3.01 Aug 6, 1999 - Jens Axboe <axboe@image.dk> | |
142 | -- Fix up the sysctl handling so that the option flags get set | |
143 | correctly. | |
144 | -- Fix up ioctl handling so the device specific ones actually get | |
145 | called :). | |
146 | ||
147 | 3.02 Aug 8, 1999 - Jens Axboe <axboe@image.dk> | |
148 | -- Fixed volume control on SCSI drives (or others with longer audio | |
149 | page). | |
150 | -- Fixed a couple of DVD minors. Thanks to Andrew T. Veliath | |
151 | <andrewtv@usa.net> for telling me and for having defined the various | |
152 | DVD structures and ioctls in the first place! He designed the original | |
153 | DVD patches for ide-cd and while I rearranged and unified them, the | |
154 | interface is still the same. | |
155 | ||
156 | 3.03 Sep 1, 1999 - Jens Axboe <axboe@image.dk> | |
157 | -- Moved the rest of the audio ioctls from the CD-ROM drivers here. Only | |
158 | CDROMREADTOCENTRY and CDROMREADTOCHDR are left. | |
159 | -- Moved the CDROMREADxxx ioctls in here. | |
160 | -- Defined the cdrom_get_last_written and cdrom_get_next_block as ioctls | |
161 | and exported functions. | |
162 | -- Erik Andersen <andersen@xmission.com> modified all SCMD_ commands | |
163 | to now read GPCMD_ for the new generic packet interface. All low level | |
164 | drivers are updated as well. | |
165 | -- Various other cleanups. | |
166 | ||
167 | 3.04 Sep 12, 1999 - Jens Axboe <axboe@image.dk> | |
168 | -- Fixed a couple of possible memory leaks (if an operation failed and | |
169 | we didn't free the buffer before returning the error). | |
170 | -- Integrated Uniform CD Changer handling from Richard Sharman | |
171 | <rsharman@pobox.com>. | |
172 | -- Defined CD_DVD and CD_CHANGER log levels. | |
173 | -- Fixed the CDROMREADxxx ioctls. | |
174 | -- CDROMPLAYTRKIND uses the GPCMD_PLAY_AUDIO_MSF command - too few | |
175 | drives supported it. We lose the index part, however. | |
176 | -- Small modifications to accommodate opens of /dev/hdc1, required | |
177 | for ide-cd to handle multisession discs. | |
178 | -- Export cdrom_mode_sense and cdrom_mode_select. | |
179 | -- init_cdrom_command() for setting up a cgc command. | |
180 | ||
181 | 3.05 Oct 24, 1999 - Jens Axboe <axboe@image.dk> | |
182 | -- Changed the interface for CDROM_SEND_PACKET. Before it was virtually | |
183 | impossible to send the drive data in a sensible way. | |
184 | -- Lowered stack usage in mmc_ioctl(), dvd_read_disckey(), and | |
185 | dvd_read_manufact. | |
186 | -- Added setup of write mode for packet writing. | |
187 | -- Fixed CDDA ripping with cdda2wav - accept much larger requests of | |
188 | number of frames and split the reads in blocks of 8. | |
189 | ||
190 | 3.06 Dec 13, 1999 - Jens Axboe <axboe@image.dk> | |
191 | -- Added support for changing the region of DVD drives. | |
192 | -- Added sense data to generic command. | |
193 | ||
194 | 3.07 Feb 2, 2000 - Jens Axboe <axboe@suse.de> | |
195 | -- Do same "read header length" trick in cdrom_get_disc_info() as | |
196 | we do in cdrom_get_track_info() -- some drive don't obey specs and | |
197 | fail if they can't supply the full Mt Fuji size table. | |
198 | -- Deleted stuff related to setting up write modes. It has a different | |
199 | home now. | |
200 | -- Clear header length in mode_select unconditionally. | |
201 | -- Removed the register_disk() that was added, not needed here. | |
202 | ||
203 | 3.08 May 1, 2000 - Jens Axboe <axboe@suse.de> | |
204 | -- Fix direction flag in setup_send_key and setup_report_key. This | |
205 | gave some SCSI adapters problems. | |
206 | -- Always return -EROFS for write opens | |
207 | -- Convert to module_init/module_exit style init and remove some | |
208 | of the #ifdef MODULE stuff | |
209 | -- Fix several dvd errors - DVD_LU_SEND_ASF should pass agid, | |
210 | DVD_HOST_SEND_RPC_STATE did not set buffer size in cdb, and | |
211 | dvd_do_auth passed uninitialized data to drive because init_cdrom_command | |
212 | did not clear a 0 sized buffer. | |
213 | ||
214 | 3.09 May 12, 2000 - Jens Axboe <axboe@suse.de> | |
215 | -- Fix Video-CD on SCSI drives that don't support READ_CD command. In | |
216 | that case switch block size and issue plain READ_10 again, then switch | |
217 | back. | |
218 | ||
219 | 3.10 Jun 10, 2000 - Jens Axboe <axboe@suse.de> | |
220 | -- Fix volume control on CD's - old SCSI-II drives now use their own | |
221 | code, as doing MODE6 stuff in here is really not my intention. | |
222 | -- Use READ_DISC_INFO for more reliable end-of-disc. | |
223 | ||
224 | 3.11 Jun 12, 2000 - Jens Axboe <axboe@suse.de> | |
225 | -- Fix bug in getting rpc phase 2 region info. | |
226 | -- Reinstate "correct" CDROMPLAYTRKIND | |
227 | ||
228 | 3.12 Oct 18, 2000 - Jens Axboe <axboe@suse.de> | |
229 | -- Use quiet bit on packet commands not known to work | |
230 | ||
231 | 3.20 Dec 17, 2003 - Jens Axboe <axboe@suse.de> | |
232 | -- Various fixes and lots of cleanups not listed :-) | |
233 | -- Locking fixes | |
234 | -- Mt Rainier support | |
235 | -- DVD-RAM write open fixes | |
236 | ||
237 | Nov 5 2001, Aug 8 2002. Modified by Andy Polyakov | |
238 | <appro@fy.chalmers.se> to support MMC-3 compliant DVD+RW units. | |
239 | ||
240 | Modified by Nigel Kukard <nkukard@lbsd.net> - support DVD+RW | |
241 | 2.4.x patch by Andy Polyakov <appro@fy.chalmers.se> | |
242 | ||
243 | -------------------------------------------------------------------------*/ | |
244 | ||
245 | #define REVISION "Revision: 3.20" | |
246 | #define VERSION "Id: cdrom.c 3.20 2003/12/17" | |
247 | ||
248 | /* I use an error-log mask to give fine grain control over the type of | |
249 | messages dumped to the system logs. The available masks include: */ | |
250 | #define CD_NOTHING 0x0 | |
251 | #define CD_WARNING 0x1 | |
252 | #define CD_REG_UNREG 0x2 | |
253 | #define CD_DO_IOCTL 0x4 | |
254 | #define CD_OPEN 0x8 | |
255 | #define CD_CLOSE 0x10 | |
256 | #define CD_COUNT_TRACKS 0x20 | |
257 | #define CD_CHANGER 0x40 | |
258 | #define CD_DVD 0x80 | |
259 | ||
260 | /* Define this to remove _all_ the debugging messages */ | |
261 | /* #define ERRLOGMASK CD_NOTHING */ | |
262 | #define ERRLOGMASK CD_WARNING | |
263 | /* #define ERRLOGMASK (CD_WARNING|CD_OPEN|CD_COUNT_TRACKS|CD_CLOSE) */ | |
264 | /* #define ERRLOGMASK (CD_WARNING|CD_REG_UNREG|CD_DO_IOCTL|CD_OPEN|CD_CLOSE|CD_COUNT_TRACKS) */ | |
265 | ||
1da177e4 LT |
266 | #include <linux/module.h> |
267 | #include <linux/fs.h> | |
268 | #include <linux/buffer_head.h> | |
269 | #include <linux/major.h> | |
270 | #include <linux/types.h> | |
271 | #include <linux/errno.h> | |
272 | #include <linux/kernel.h> | |
273 | #include <linux/mm.h> | |
274 | #include <linux/slab.h> | |
275 | #include <linux/cdrom.h> | |
276 | #include <linux/sysctl.h> | |
277 | #include <linux/proc_fs.h> | |
278 | #include <linux/blkpg.h> | |
279 | #include <linux/init.h> | |
280 | #include <linux/fcntl.h> | |
281 | #include <linux/blkdev.h> | |
282 | #include <linux/times.h> | |
283 | ||
284 | #include <asm/uaccess.h> | |
285 | ||
286 | /* used to tell the module to turn on full debugging messages */ | |
287 | static int debug; | |
288 | /* used to keep tray locked at all times */ | |
289 | static int keeplocked; | |
290 | /* default compatibility mode */ | |
291 | static int autoclose=1; | |
292 | static int autoeject; | |
293 | static int lockdoor = 1; | |
294 | /* will we ever get to use this... sigh. */ | |
295 | static int check_media_type; | |
296 | /* automatically restart mrw format */ | |
297 | static int mrw_format_restart = 1; | |
298 | module_param(debug, bool, 0); | |
299 | module_param(autoclose, bool, 0); | |
300 | module_param(autoeject, bool, 0); | |
301 | module_param(lockdoor, bool, 0); | |
302 | module_param(check_media_type, bool, 0); | |
303 | module_param(mrw_format_restart, bool, 0); | |
304 | ||
305 | static DEFINE_SPINLOCK(cdrom_lock); | |
306 | ||
307 | static const char *mrw_format_status[] = { | |
308 | "not mrw", | |
309 | "bgformat inactive", | |
310 | "bgformat active", | |
311 | "mrw complete", | |
312 | }; | |
313 | ||
314 | static const char *mrw_address_space[] = { "DMA", "GAA" }; | |
315 | ||
316 | #if (ERRLOGMASK!=CD_NOTHING) | |
317 | #define cdinfo(type, fmt, args...) \ | |
318 | if ((ERRLOGMASK & type) || debug==1 ) \ | |
319 | printk(KERN_INFO "cdrom: " fmt, ## args) | |
320 | #else | |
321 | #define cdinfo(type, fmt, args...) | |
322 | #endif | |
323 | ||
324 | /* These are used to simplify getting data in from and back to user land */ | |
325 | #define IOCTL_IN(arg, type, in) \ | |
326 | if (copy_from_user(&(in), (type __user *) (arg), sizeof (in))) \ | |
327 | return -EFAULT; | |
328 | ||
329 | #define IOCTL_OUT(arg, type, out) \ | |
330 | if (copy_to_user((type __user *) (arg), &(out), sizeof (out))) \ | |
331 | return -EFAULT; | |
332 | ||
333 | /* The (cdo->capability & ~cdi->mask & CDC_XXX) construct was used in | |
334 | a lot of places. This macro makes the code more clear. */ | |
335 | #define CDROM_CAN(type) (cdi->ops->capability & ~cdi->mask & (type)) | |
336 | ||
337 | /* used in the audio ioctls */ | |
338 | #define CHECKAUDIO if ((ret=check_for_audio_disc(cdi, cdo))) return ret | |
339 | ||
340 | /* Not-exported routines. */ | |
341 | static int open_for_data(struct cdrom_device_info * cdi); | |
342 | static int check_for_audio_disc(struct cdrom_device_info * cdi, | |
343 | struct cdrom_device_ops * cdo); | |
344 | static void sanitize_format(union cdrom_addr *addr, | |
345 | u_char * curr, u_char requested); | |
346 | static int mmc_ioctl(struct cdrom_device_info *cdi, unsigned int cmd, | |
347 | unsigned long arg); | |
348 | ||
349 | int cdrom_get_last_written(struct cdrom_device_info *, long *); | |
350 | static int cdrom_get_next_writable(struct cdrom_device_info *, long *); | |
351 | static void cdrom_count_tracks(struct cdrom_device_info *, tracktype*); | |
352 | ||
353 | static int cdrom_mrw_exit(struct cdrom_device_info *cdi); | |
354 | ||
355 | static int cdrom_get_disc_info(struct cdrom_device_info *cdi, disc_information *di); | |
356 | ||
357 | #ifdef CONFIG_SYSCTL | |
358 | static void cdrom_sysctl_register(void); | |
359 | #endif /* CONFIG_SYSCTL */ | |
360 | static struct cdrom_device_info *topCdromPtr; | |
361 | ||
362 | static int cdrom_dummy_generic_packet(struct cdrom_device_info *cdi, | |
363 | struct packet_command *cgc) | |
364 | { | |
365 | if (cgc->sense) { | |
366 | cgc->sense->sense_key = 0x05; | |
367 | cgc->sense->asc = 0x20; | |
368 | cgc->sense->ascq = 0x00; | |
369 | } | |
370 | ||
371 | cgc->stat = -EIO; | |
372 | return -EIO; | |
373 | } | |
374 | ||
375 | /* This macro makes sure we don't have to check on cdrom_device_ops | |
376 | * existence in the run-time routines below. Change_capability is a | |
377 | * hack to have the capability flags defined const, while we can still | |
378 | * change it here without gcc complaining at every line. | |
379 | */ | |
380 | #define ENSURE(call, bits) if (cdo->call == NULL) *change_capability &= ~(bits) | |
381 | ||
382 | int register_cdrom(struct cdrom_device_info *cdi) | |
383 | { | |
384 | static char banner_printed; | |
385 | struct cdrom_device_ops *cdo = cdi->ops; | |
386 | int *change_capability = (int *)&cdo->capability; /* hack */ | |
387 | ||
388 | cdinfo(CD_OPEN, "entering register_cdrom\n"); | |
389 | ||
390 | if (cdo->open == NULL || cdo->release == NULL) | |
391 | return -2; | |
392 | if (!banner_printed) { | |
393 | printk(KERN_INFO "Uniform CD-ROM driver " REVISION "\n"); | |
394 | banner_printed = 1; | |
395 | #ifdef CONFIG_SYSCTL | |
396 | cdrom_sysctl_register(); | |
397 | #endif /* CONFIG_SYSCTL */ | |
398 | } | |
399 | ||
400 | ENSURE(drive_status, CDC_DRIVE_STATUS ); | |
401 | ENSURE(media_changed, CDC_MEDIA_CHANGED); | |
402 | ENSURE(tray_move, CDC_CLOSE_TRAY | CDC_OPEN_TRAY); | |
403 | ENSURE(lock_door, CDC_LOCK); | |
404 | ENSURE(select_speed, CDC_SELECT_SPEED); | |
405 | ENSURE(get_last_session, CDC_MULTI_SESSION); | |
406 | ENSURE(get_mcn, CDC_MCN); | |
407 | ENSURE(reset, CDC_RESET); | |
408 | ENSURE(audio_ioctl, CDC_PLAY_AUDIO); | |
1da177e4 LT |
409 | ENSURE(generic_packet, CDC_GENERIC_PACKET); |
410 | cdi->mc_flags = 0; | |
411 | cdo->n_minors = 0; | |
412 | cdi->options = CDO_USE_FFLAGS; | |
413 | ||
414 | if (autoclose==1 && CDROM_CAN(CDC_CLOSE_TRAY)) | |
415 | cdi->options |= (int) CDO_AUTO_CLOSE; | |
416 | if (autoeject==1 && CDROM_CAN(CDC_OPEN_TRAY)) | |
417 | cdi->options |= (int) CDO_AUTO_EJECT; | |
418 | if (lockdoor==1) | |
419 | cdi->options |= (int) CDO_LOCK; | |
420 | if (check_media_type==1) | |
421 | cdi->options |= (int) CDO_CHECK_TYPE; | |
422 | ||
423 | if (CDROM_CAN(CDC_MRW_W)) | |
424 | cdi->exit = cdrom_mrw_exit; | |
425 | ||
426 | if (cdi->disk) | |
427 | cdi->cdda_method = CDDA_BPC_FULL; | |
428 | else | |
429 | cdi->cdda_method = CDDA_OLD; | |
430 | ||
431 | if (!cdo->generic_packet) | |
432 | cdo->generic_packet = cdrom_dummy_generic_packet; | |
433 | ||
434 | cdinfo(CD_REG_UNREG, "drive \"/dev/%s\" registered\n", cdi->name); | |
435 | spin_lock(&cdrom_lock); | |
436 | cdi->next = topCdromPtr; | |
437 | topCdromPtr = cdi; | |
438 | spin_unlock(&cdrom_lock); | |
439 | return 0; | |
440 | } | |
441 | #undef ENSURE | |
442 | ||
443 | int unregister_cdrom(struct cdrom_device_info *unreg) | |
444 | { | |
445 | struct cdrom_device_info *cdi, *prev; | |
446 | cdinfo(CD_OPEN, "entering unregister_cdrom\n"); | |
447 | ||
448 | prev = NULL; | |
449 | spin_lock(&cdrom_lock); | |
450 | cdi = topCdromPtr; | |
451 | while (cdi && cdi != unreg) { | |
452 | prev = cdi; | |
453 | cdi = cdi->next; | |
454 | } | |
455 | ||
456 | if (cdi == NULL) { | |
457 | spin_unlock(&cdrom_lock); | |
458 | return -2; | |
459 | } | |
460 | if (prev) | |
461 | prev->next = cdi->next; | |
462 | else | |
463 | topCdromPtr = cdi->next; | |
464 | ||
465 | spin_unlock(&cdrom_lock); | |
466 | ||
467 | if (cdi->exit) | |
468 | cdi->exit(cdi); | |
469 | ||
470 | cdi->ops->n_minors--; | |
471 | cdinfo(CD_REG_UNREG, "drive \"/dev/%s\" unregistered\n", cdi->name); | |
472 | return 0; | |
473 | } | |
474 | ||
475 | int cdrom_get_media_event(struct cdrom_device_info *cdi, | |
476 | struct media_event_desc *med) | |
477 | { | |
478 | struct packet_command cgc; | |
479 | unsigned char buffer[8]; | |
480 | struct event_header *eh = (struct event_header *) buffer; | |
481 | ||
482 | init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_READ); | |
483 | cgc.cmd[0] = GPCMD_GET_EVENT_STATUS_NOTIFICATION; | |
484 | cgc.cmd[1] = 1; /* IMMED */ | |
485 | cgc.cmd[4] = 1 << 4; /* media event */ | |
486 | cgc.cmd[8] = sizeof(buffer); | |
487 | cgc.quiet = 1; | |
488 | ||
489 | if (cdi->ops->generic_packet(cdi, &cgc)) | |
490 | return 1; | |
491 | ||
492 | if (be16_to_cpu(eh->data_len) < sizeof(*med)) | |
493 | return 1; | |
494 | ||
495 | if (eh->nea || eh->notification_class != 0x4) | |
496 | return 1; | |
497 | ||
498 | memcpy(med, &buffer[sizeof(*eh)], sizeof(*med)); | |
499 | return 0; | |
500 | } | |
501 | ||
502 | /* | |
503 | * the first prototypes used 0x2c as the page code for the mrw mode page, | |
504 | * subsequently this was changed to 0x03. probe the one used by this drive | |
505 | */ | |
506 | static int cdrom_mrw_probe_pc(struct cdrom_device_info *cdi) | |
507 | { | |
508 | struct packet_command cgc; | |
509 | char buffer[16]; | |
510 | ||
511 | init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_READ); | |
512 | ||
513 | cgc.timeout = HZ; | |
514 | cgc.quiet = 1; | |
515 | ||
516 | if (!cdrom_mode_sense(cdi, &cgc, MRW_MODE_PC, 0)) { | |
517 | cdi->mrw_mode_page = MRW_MODE_PC; | |
518 | return 0; | |
519 | } else if (!cdrom_mode_sense(cdi, &cgc, MRW_MODE_PC_PRE1, 0)) { | |
520 | cdi->mrw_mode_page = MRW_MODE_PC_PRE1; | |
521 | return 0; | |
522 | } | |
523 | ||
524 | return 1; | |
525 | } | |
526 | ||
527 | static int cdrom_is_mrw(struct cdrom_device_info *cdi, int *write) | |
528 | { | |
529 | struct packet_command cgc; | |
530 | struct mrw_feature_desc *mfd; | |
531 | unsigned char buffer[16]; | |
532 | int ret; | |
533 | ||
534 | *write = 0; | |
535 | ||
536 | init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_READ); | |
537 | ||
538 | cgc.cmd[0] = GPCMD_GET_CONFIGURATION; | |
539 | cgc.cmd[3] = CDF_MRW; | |
540 | cgc.cmd[8] = sizeof(buffer); | |
541 | cgc.quiet = 1; | |
542 | ||
543 | if ((ret = cdi->ops->generic_packet(cdi, &cgc))) | |
544 | return ret; | |
545 | ||
546 | mfd = (struct mrw_feature_desc *)&buffer[sizeof(struct feature_header)]; | |
547 | if (be16_to_cpu(mfd->feature_code) != CDF_MRW) | |
548 | return 1; | |
549 | *write = mfd->write; | |
550 | ||
551 | if ((ret = cdrom_mrw_probe_pc(cdi))) { | |
552 | *write = 0; | |
553 | return ret; | |
554 | } | |
555 | ||
556 | return 0; | |
557 | } | |
558 | ||
559 | static int cdrom_mrw_bgformat(struct cdrom_device_info *cdi, int cont) | |
560 | { | |
561 | struct packet_command cgc; | |
562 | unsigned char buffer[12]; | |
563 | int ret; | |
564 | ||
565 | printk(KERN_INFO "cdrom: %sstarting format\n", cont ? "Re" : ""); | |
566 | ||
567 | /* | |
568 | * FmtData bit set (bit 4), format type is 1 | |
569 | */ | |
570 | init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_WRITE); | |
571 | cgc.cmd[0] = GPCMD_FORMAT_UNIT; | |
572 | cgc.cmd[1] = (1 << 4) | 1; | |
573 | ||
574 | cgc.timeout = 5 * 60 * HZ; | |
575 | ||
576 | /* | |
577 | * 4 byte format list header, 8 byte format list descriptor | |
578 | */ | |
579 | buffer[1] = 1 << 1; | |
580 | buffer[3] = 8; | |
581 | ||
582 | /* | |
583 | * nr_blocks field | |
584 | */ | |
585 | buffer[4] = 0xff; | |
586 | buffer[5] = 0xff; | |
587 | buffer[6] = 0xff; | |
588 | buffer[7] = 0xff; | |
589 | ||
590 | buffer[8] = 0x24 << 2; | |
591 | buffer[11] = cont; | |
592 | ||
593 | ret = cdi->ops->generic_packet(cdi, &cgc); | |
594 | if (ret) | |
595 | printk(KERN_INFO "cdrom: bgformat failed\n"); | |
596 | ||
597 | return ret; | |
598 | } | |
599 | ||
600 | static int cdrom_mrw_bgformat_susp(struct cdrom_device_info *cdi, int immed) | |
601 | { | |
602 | struct packet_command cgc; | |
603 | ||
604 | init_cdrom_command(&cgc, NULL, 0, CGC_DATA_NONE); | |
605 | cgc.cmd[0] = GPCMD_CLOSE_TRACK; | |
606 | ||
607 | /* | |
608 | * Session = 1, Track = 0 | |
609 | */ | |
610 | cgc.cmd[1] = !!immed; | |
611 | cgc.cmd[2] = 1 << 1; | |
612 | ||
613 | cgc.timeout = 5 * 60 * HZ; | |
614 | ||
615 | return cdi->ops->generic_packet(cdi, &cgc); | |
616 | } | |
617 | ||
618 | static int cdrom_flush_cache(struct cdrom_device_info *cdi) | |
619 | { | |
620 | struct packet_command cgc; | |
621 | ||
622 | init_cdrom_command(&cgc, NULL, 0, CGC_DATA_NONE); | |
623 | cgc.cmd[0] = GPCMD_FLUSH_CACHE; | |
624 | ||
625 | cgc.timeout = 5 * 60 * HZ; | |
626 | ||
627 | return cdi->ops->generic_packet(cdi, &cgc); | |
628 | } | |
629 | ||
630 | static int cdrom_mrw_exit(struct cdrom_device_info *cdi) | |
631 | { | |
632 | disc_information di; | |
633 | int ret; | |
634 | ||
635 | ret = cdrom_get_disc_info(cdi, &di); | |
636 | if (ret < 0 || ret < (int)offsetof(typeof(di),disc_type)) | |
637 | return 1; | |
638 | ||
639 | ret = 0; | |
640 | if (di.mrw_status == CDM_MRW_BGFORMAT_ACTIVE) { | |
641 | printk(KERN_INFO "cdrom: issuing MRW back ground " | |
642 | "format suspend\n"); | |
643 | ret = cdrom_mrw_bgformat_susp(cdi, 0); | |
644 | } | |
645 | ||
7da21a02 | 646 | if (!ret && cdi->media_written) |
1da177e4 LT |
647 | ret = cdrom_flush_cache(cdi); |
648 | ||
649 | return ret; | |
650 | } | |
651 | ||
652 | static int cdrom_mrw_set_lba_space(struct cdrom_device_info *cdi, int space) | |
653 | { | |
654 | struct packet_command cgc; | |
655 | struct mode_page_header *mph; | |
656 | char buffer[16]; | |
657 | int ret, offset, size; | |
658 | ||
659 | init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_READ); | |
660 | ||
661 | cgc.buffer = buffer; | |
662 | cgc.buflen = sizeof(buffer); | |
663 | ||
664 | if ((ret = cdrom_mode_sense(cdi, &cgc, cdi->mrw_mode_page, 0))) | |
665 | return ret; | |
666 | ||
667 | mph = (struct mode_page_header *) buffer; | |
668 | offset = be16_to_cpu(mph->desc_length); | |
669 | size = be16_to_cpu(mph->mode_data_length) + 2; | |
670 | ||
671 | buffer[offset + 3] = space; | |
672 | cgc.buflen = size; | |
673 | ||
674 | if ((ret = cdrom_mode_select(cdi, &cgc))) | |
675 | return ret; | |
676 | ||
677 | printk(KERN_INFO "cdrom: %s: mrw address space %s selected\n", cdi->name, mrw_address_space[space]); | |
678 | return 0; | |
679 | } | |
680 | ||
681 | static int cdrom_get_random_writable(struct cdrom_device_info *cdi, | |
682 | struct rwrt_feature_desc *rfd) | |
683 | { | |
684 | struct packet_command cgc; | |
685 | char buffer[24]; | |
686 | int ret; | |
687 | ||
688 | init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_READ); | |
689 | ||
690 | cgc.cmd[0] = GPCMD_GET_CONFIGURATION; /* often 0x46 */ | |
691 | cgc.cmd[3] = CDF_RWRT; /* often 0x0020 */ | |
692 | cgc.cmd[8] = sizeof(buffer); /* often 0x18 */ | |
693 | cgc.quiet = 1; | |
694 | ||
695 | if ((ret = cdi->ops->generic_packet(cdi, &cgc))) | |
696 | return ret; | |
697 | ||
698 | memcpy(rfd, &buffer[sizeof(struct feature_header)], sizeof (*rfd)); | |
699 | return 0; | |
700 | } | |
701 | ||
702 | static int cdrom_has_defect_mgt(struct cdrom_device_info *cdi) | |
703 | { | |
704 | struct packet_command cgc; | |
705 | char buffer[16]; | |
56052d52 | 706 | __be16 *feature_code; |
1da177e4 LT |
707 | int ret; |
708 | ||
709 | init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_READ); | |
710 | ||
711 | cgc.cmd[0] = GPCMD_GET_CONFIGURATION; | |
712 | cgc.cmd[3] = CDF_HWDM; | |
713 | cgc.cmd[8] = sizeof(buffer); | |
714 | cgc.quiet = 1; | |
715 | ||
716 | if ((ret = cdi->ops->generic_packet(cdi, &cgc))) | |
717 | return ret; | |
718 | ||
56052d52 | 719 | feature_code = (__be16 *) &buffer[sizeof(struct feature_header)]; |
1da177e4 LT |
720 | if (be16_to_cpu(*feature_code) == CDF_HWDM) |
721 | return 0; | |
722 | ||
723 | return 1; | |
724 | } | |
725 | ||
726 | ||
727 | static int cdrom_is_random_writable(struct cdrom_device_info *cdi, int *write) | |
728 | { | |
729 | struct rwrt_feature_desc rfd; | |
730 | int ret; | |
731 | ||
732 | *write = 0; | |
733 | ||
734 | if ((ret = cdrom_get_random_writable(cdi, &rfd))) | |
735 | return ret; | |
736 | ||
737 | if (CDF_RWRT == be16_to_cpu(rfd.feature_code)) | |
738 | *write = 1; | |
739 | ||
740 | return 0; | |
741 | } | |
742 | ||
743 | static int cdrom_media_erasable(struct cdrom_device_info *cdi) | |
744 | { | |
745 | disc_information di; | |
746 | int ret; | |
747 | ||
748 | ret = cdrom_get_disc_info(cdi, &di); | |
749 | if (ret < 0 || ret < offsetof(typeof(di), n_first_track)) | |
750 | return -1; | |
751 | ||
752 | return di.erasable; | |
753 | } | |
754 | ||
755 | /* | |
756 | * FIXME: check RO bit | |
757 | */ | |
758 | static int cdrom_dvdram_open_write(struct cdrom_device_info *cdi) | |
759 | { | |
760 | int ret = cdrom_media_erasable(cdi); | |
761 | ||
762 | /* | |
763 | * allow writable open if media info read worked and media is | |
764 | * erasable, _or_ if it fails since not all drives support it | |
765 | */ | |
766 | if (!ret) | |
767 | return 1; | |
768 | ||
769 | return 0; | |
770 | } | |
771 | ||
772 | static int cdrom_mrw_open_write(struct cdrom_device_info *cdi) | |
773 | { | |
774 | disc_information di; | |
775 | int ret; | |
776 | ||
777 | /* | |
778 | * always reset to DMA lba space on open | |
779 | */ | |
780 | if (cdrom_mrw_set_lba_space(cdi, MRW_LBA_DMA)) { | |
781 | printk(KERN_ERR "cdrom: failed setting lba address space\n"); | |
782 | return 1; | |
783 | } | |
784 | ||
785 | ret = cdrom_get_disc_info(cdi, &di); | |
786 | if (ret < 0 || ret < offsetof(typeof(di),disc_type)) | |
787 | return 1; | |
788 | ||
789 | if (!di.erasable) | |
790 | return 1; | |
791 | ||
792 | /* | |
793 | * mrw_status | |
794 | * 0 - not MRW formatted | |
795 | * 1 - MRW bgformat started, but not running or complete | |
796 | * 2 - MRW bgformat in progress | |
797 | * 3 - MRW formatting complete | |
798 | */ | |
799 | ret = 0; | |
800 | printk(KERN_INFO "cdrom open: mrw_status '%s'\n", | |
801 | mrw_format_status[di.mrw_status]); | |
802 | if (!di.mrw_status) | |
803 | ret = 1; | |
804 | else if (di.mrw_status == CDM_MRW_BGFORMAT_INACTIVE && | |
805 | mrw_format_restart) | |
806 | ret = cdrom_mrw_bgformat(cdi, 1); | |
807 | ||
808 | return ret; | |
809 | } | |
810 | ||
811 | static int mo_open_write(struct cdrom_device_info *cdi) | |
812 | { | |
813 | struct packet_command cgc; | |
814 | char buffer[255]; | |
815 | int ret; | |
816 | ||
817 | init_cdrom_command(&cgc, &buffer, 4, CGC_DATA_READ); | |
818 | cgc.quiet = 1; | |
819 | ||
820 | /* | |
821 | * obtain write protect information as per | |
822 | * drivers/scsi/sd.c:sd_read_write_protect_flag | |
823 | */ | |
824 | ||
825 | ret = cdrom_mode_sense(cdi, &cgc, GPMODE_ALL_PAGES, 0); | |
826 | if (ret) | |
827 | ret = cdrom_mode_sense(cdi, &cgc, GPMODE_VENDOR_PAGE, 0); | |
828 | if (ret) { | |
829 | cgc.buflen = 255; | |
830 | ret = cdrom_mode_sense(cdi, &cgc, GPMODE_ALL_PAGES, 0); | |
831 | } | |
832 | ||
833 | /* drive gave us no info, let the user go ahead */ | |
834 | if (ret) | |
835 | return 0; | |
836 | ||
837 | return buffer[3] & 0x80; | |
838 | } | |
839 | ||
840 | static int cdrom_ram_open_write(struct cdrom_device_info *cdi) | |
841 | { | |
842 | struct rwrt_feature_desc rfd; | |
843 | int ret; | |
844 | ||
845 | if ((ret = cdrom_has_defect_mgt(cdi))) | |
846 | return ret; | |
847 | ||
848 | if ((ret = cdrom_get_random_writable(cdi, &rfd))) | |
849 | return ret; | |
850 | else if (CDF_RWRT == be16_to_cpu(rfd.feature_code)) | |
851 | ret = !rfd.curr; | |
852 | ||
853 | cdinfo(CD_OPEN, "can open for random write\n"); | |
854 | return ret; | |
855 | } | |
856 | ||
857 | static void cdrom_mmc3_profile(struct cdrom_device_info *cdi) | |
858 | { | |
859 | struct packet_command cgc; | |
860 | char buffer[32]; | |
861 | int ret, mmc3_profile; | |
862 | ||
863 | init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_READ); | |
864 | ||
865 | cgc.cmd[0] = GPCMD_GET_CONFIGURATION; | |
866 | cgc.cmd[1] = 0; | |
867 | cgc.cmd[2] = cgc.cmd[3] = 0; /* Starting Feature Number */ | |
868 | cgc.cmd[8] = sizeof(buffer); /* Allocation Length */ | |
869 | cgc.quiet = 1; | |
870 | ||
871 | if ((ret = cdi->ops->generic_packet(cdi, &cgc))) | |
872 | mmc3_profile = 0xffff; | |
873 | else | |
874 | mmc3_profile = (buffer[6] << 8) | buffer[7]; | |
875 | ||
876 | cdi->mmc3_profile = mmc3_profile; | |
877 | } | |
878 | ||
879 | static int cdrom_is_dvd_rw(struct cdrom_device_info *cdi) | |
880 | { | |
881 | switch (cdi->mmc3_profile) { | |
882 | case 0x12: /* DVD-RAM */ | |
883 | case 0x1A: /* DVD+RW */ | |
884 | return 0; | |
885 | default: | |
886 | return 1; | |
887 | } | |
888 | } | |
889 | ||
890 | /* | |
891 | * returns 0 for ok to open write, non-0 to disallow | |
892 | */ | |
893 | static int cdrom_open_write(struct cdrom_device_info *cdi) | |
894 | { | |
895 | int mrw, mrw_write, ram_write; | |
896 | int ret = 1; | |
897 | ||
898 | mrw = 0; | |
899 | if (!cdrom_is_mrw(cdi, &mrw_write)) | |
900 | mrw = 1; | |
901 | ||
902 | if (CDROM_CAN(CDC_MO_DRIVE)) | |
903 | ram_write = 1; | |
904 | else | |
905 | (void) cdrom_is_random_writable(cdi, &ram_write); | |
906 | ||
907 | if (mrw) | |
908 | cdi->mask &= ~CDC_MRW; | |
909 | else | |
910 | cdi->mask |= CDC_MRW; | |
911 | ||
912 | if (mrw_write) | |
913 | cdi->mask &= ~CDC_MRW_W; | |
914 | else | |
915 | cdi->mask |= CDC_MRW_W; | |
916 | ||
917 | if (ram_write) | |
918 | cdi->mask &= ~CDC_RAM; | |
919 | else | |
920 | cdi->mask |= CDC_RAM; | |
921 | ||
922 | if (CDROM_CAN(CDC_MRW_W)) | |
923 | ret = cdrom_mrw_open_write(cdi); | |
924 | else if (CDROM_CAN(CDC_DVD_RAM)) | |
925 | ret = cdrom_dvdram_open_write(cdi); | |
926 | else if (CDROM_CAN(CDC_RAM) && | |
927 | !CDROM_CAN(CDC_CD_R|CDC_CD_RW|CDC_DVD|CDC_DVD_R|CDC_MRW|CDC_MO_DRIVE)) | |
928 | ret = cdrom_ram_open_write(cdi); | |
929 | else if (CDROM_CAN(CDC_MO_DRIVE)) | |
930 | ret = mo_open_write(cdi); | |
931 | else if (!cdrom_is_dvd_rw(cdi)) | |
932 | ret = 0; | |
933 | ||
934 | return ret; | |
935 | } | |
936 | ||
937 | static void cdrom_dvd_rw_close_write(struct cdrom_device_info *cdi) | |
938 | { | |
939 | struct packet_command cgc; | |
940 | ||
941 | if (cdi->mmc3_profile != 0x1a) { | |
942 | cdinfo(CD_CLOSE, "%s: No DVD+RW\n", cdi->name); | |
943 | return; | |
944 | } | |
945 | ||
946 | if (!cdi->media_written) { | |
947 | cdinfo(CD_CLOSE, "%s: DVD+RW media clean\n", cdi->name); | |
948 | return; | |
949 | } | |
950 | ||
951 | printk(KERN_INFO "cdrom: %s: dirty DVD+RW media, \"finalizing\"\n", | |
952 | cdi->name); | |
953 | ||
954 | init_cdrom_command(&cgc, NULL, 0, CGC_DATA_NONE); | |
955 | cgc.cmd[0] = GPCMD_FLUSH_CACHE; | |
956 | cgc.timeout = 30*HZ; | |
957 | cdi->ops->generic_packet(cdi, &cgc); | |
958 | ||
959 | init_cdrom_command(&cgc, NULL, 0, CGC_DATA_NONE); | |
960 | cgc.cmd[0] = GPCMD_CLOSE_TRACK; | |
961 | cgc.timeout = 3000*HZ; | |
962 | cgc.quiet = 1; | |
963 | cdi->ops->generic_packet(cdi, &cgc); | |
964 | ||
965 | init_cdrom_command(&cgc, NULL, 0, CGC_DATA_NONE); | |
966 | cgc.cmd[0] = GPCMD_CLOSE_TRACK; | |
967 | cgc.cmd[2] = 2; /* Close session */ | |
968 | cgc.quiet = 1; | |
969 | cgc.timeout = 3000*HZ; | |
970 | cdi->ops->generic_packet(cdi, &cgc); | |
971 | ||
972 | cdi->media_written = 0; | |
973 | } | |
974 | ||
975 | static int cdrom_close_write(struct cdrom_device_info *cdi) | |
976 | { | |
977 | #if 0 | |
978 | return cdrom_flush_cache(cdi); | |
979 | #else | |
980 | return 0; | |
981 | #endif | |
982 | } | |
983 | ||
984 | /* We use the open-option O_NONBLOCK to indicate that the | |
985 | * purpose of opening is only for subsequent ioctl() calls; no device | |
986 | * integrity checks are performed. | |
987 | * | |
988 | * We hope that all cd-player programs will adopt this convention. It | |
989 | * is in their own interest: device control becomes a lot easier | |
990 | * this way. | |
991 | */ | |
992 | int cdrom_open(struct cdrom_device_info *cdi, struct inode *ip, struct file *fp) | |
993 | { | |
994 | int ret; | |
995 | ||
996 | cdinfo(CD_OPEN, "entering cdrom_open\n"); | |
997 | ||
998 | /* if this was a O_NONBLOCK open and we should honor the flags, | |
999 | * do a quick open without drive/disc integrity checks. */ | |
1000 | cdi->use_count++; | |
1001 | if ((fp->f_flags & O_NONBLOCK) && (cdi->options & CDO_USE_FFLAGS)) { | |
1002 | ret = cdi->ops->open(cdi, 1); | |
1003 | } else { | |
1004 | ret = open_for_data(cdi); | |
1005 | if (ret) | |
1006 | goto err; | |
1007 | cdrom_mmc3_profile(cdi); | |
1008 | if (fp->f_mode & FMODE_WRITE) { | |
1009 | ret = -EROFS; | |
1010 | if (cdrom_open_write(cdi)) | |
16070428 | 1011 | goto err_release; |
1da177e4 | 1012 | if (!CDROM_CAN(CDC_RAM)) |
16070428 | 1013 | goto err_release; |
1da177e4 LT |
1014 | ret = 0; |
1015 | cdi->media_written = 0; | |
1016 | } | |
1017 | } | |
1018 | ||
1019 | if (ret) | |
1020 | goto err; | |
1021 | ||
1022 | cdinfo(CD_OPEN, "Use count for \"/dev/%s\" now %d\n", | |
1023 | cdi->name, cdi->use_count); | |
1024 | /* Do this on open. Don't wait for mount, because they might | |
1025 | not be mounting, but opening with O_NONBLOCK */ | |
1026 | check_disk_change(ip->i_bdev); | |
1027 | return 0; | |
16070428 JA |
1028 | err_release: |
1029 | cdi->ops->release(cdi); | |
1da177e4 LT |
1030 | err: |
1031 | cdi->use_count--; | |
1032 | return ret; | |
1033 | } | |
1034 | ||
1035 | static | |
1036 | int open_for_data(struct cdrom_device_info * cdi) | |
1037 | { | |
1038 | int ret; | |
1039 | struct cdrom_device_ops *cdo = cdi->ops; | |
1040 | tracktype tracks; | |
1041 | cdinfo(CD_OPEN, "entering open_for_data\n"); | |
1042 | /* Check if the driver can report drive status. If it can, we | |
1043 | can do clever things. If it can't, well, we at least tried! */ | |
1044 | if (cdo->drive_status != NULL) { | |
1045 | ret = cdo->drive_status(cdi, CDSL_CURRENT); | |
1046 | cdinfo(CD_OPEN, "drive_status=%d\n", ret); | |
1047 | if (ret == CDS_TRAY_OPEN) { | |
1048 | cdinfo(CD_OPEN, "the tray is open...\n"); | |
1049 | /* can/may i close it? */ | |
1050 | if (CDROM_CAN(CDC_CLOSE_TRAY) && | |
1051 | cdi->options & CDO_AUTO_CLOSE) { | |
1052 | cdinfo(CD_OPEN, "trying to close the tray.\n"); | |
1053 | ret=cdo->tray_move(cdi,0); | |
1054 | if (ret) { | |
1055 | cdinfo(CD_OPEN, "bummer. tried to close the tray but failed.\n"); | |
1056 | /* Ignore the error from the low | |
1057 | level driver. We don't care why it | |
1058 | couldn't close the tray. We only care | |
1059 | that there is no disc in the drive, | |
1060 | since that is the _REAL_ problem here.*/ | |
1061 | ret=-ENOMEDIUM; | |
1062 | goto clean_up_and_return; | |
1063 | } | |
1064 | } else { | |
1065 | cdinfo(CD_OPEN, "bummer. this drive can't close the tray.\n"); | |
1066 | ret=-ENOMEDIUM; | |
1067 | goto clean_up_and_return; | |
1068 | } | |
1069 | /* Ok, the door should be closed now.. Check again */ | |
1070 | ret = cdo->drive_status(cdi, CDSL_CURRENT); | |
1071 | if ((ret == CDS_NO_DISC) || (ret==CDS_TRAY_OPEN)) { | |
1072 | cdinfo(CD_OPEN, "bummer. the tray is still not closed.\n"); | |
1073 | cdinfo(CD_OPEN, "tray might not contain a medium.\n"); | |
1074 | ret=-ENOMEDIUM; | |
1075 | goto clean_up_and_return; | |
1076 | } | |
1077 | cdinfo(CD_OPEN, "the tray is now closed.\n"); | |
1078 | } | |
1079 | /* the door should be closed now, check for the disc */ | |
1080 | ret = cdo->drive_status(cdi, CDSL_CURRENT); | |
1081 | if (ret!=CDS_DISC_OK) { | |
1082 | ret = -ENOMEDIUM; | |
1083 | goto clean_up_and_return; | |
1084 | } | |
1085 | } | |
1086 | cdrom_count_tracks(cdi, &tracks); | |
1087 | if (tracks.error == CDS_NO_DISC) { | |
1088 | cdinfo(CD_OPEN, "bummer. no disc.\n"); | |
1089 | ret=-ENOMEDIUM; | |
1090 | goto clean_up_and_return; | |
1091 | } | |
1092 | /* CD-Players which don't use O_NONBLOCK, workman | |
1093 | * for example, need bit CDO_CHECK_TYPE cleared! */ | |
1094 | if (tracks.data==0) { | |
1095 | if (cdi->options & CDO_CHECK_TYPE) { | |
1096 | /* give people a warning shot, now that CDO_CHECK_TYPE | |
1097 | is the default case! */ | |
1098 | cdinfo(CD_OPEN, "bummer. wrong media type.\n"); | |
1099 | cdinfo(CD_WARNING, "pid %d must open device O_NONBLOCK!\n", | |
1100 | (unsigned int)current->pid); | |
1101 | ret=-EMEDIUMTYPE; | |
1102 | goto clean_up_and_return; | |
1103 | } | |
1104 | else { | |
1105 | cdinfo(CD_OPEN, "wrong media type, but CDO_CHECK_TYPE not set.\n"); | |
1106 | } | |
1107 | } | |
1108 | ||
1109 | cdinfo(CD_OPEN, "all seems well, opening the device.\n"); | |
1110 | ||
1111 | /* all seems well, we can open the device */ | |
1112 | ret = cdo->open(cdi, 0); /* open for data */ | |
1113 | cdinfo(CD_OPEN, "opening the device gave me %d.\n", ret); | |
1114 | /* After all this careful checking, we shouldn't have problems | |
1115 | opening the device, but we don't want the device locked if | |
1116 | this somehow fails... */ | |
1117 | if (ret) { | |
1118 | cdinfo(CD_OPEN, "open device failed.\n"); | |
1119 | goto clean_up_and_return; | |
1120 | } | |
1121 | if (CDROM_CAN(CDC_LOCK) && (cdi->options & CDO_LOCK)) { | |
1122 | cdo->lock_door(cdi, 1); | |
1123 | cdinfo(CD_OPEN, "door locked.\n"); | |
1124 | } | |
1125 | cdinfo(CD_OPEN, "device opened successfully.\n"); | |
1126 | return ret; | |
1127 | ||
1128 | /* Something failed. Try to unlock the drive, because some drivers | |
1129 | (notably ide-cd) lock the drive after every command. This produced | |
1130 | a nasty bug where after mount failed, the drive would remain locked! | |
1131 | This ensures that the drive gets unlocked after a mount fails. This | |
1132 | is a goto to avoid bloating the driver with redundant code. */ | |
1133 | clean_up_and_return: | |
00d6da9b | 1134 | cdinfo(CD_OPEN, "open failed.\n"); |
1da177e4 LT |
1135 | if (CDROM_CAN(CDC_LOCK) && cdi->options & CDO_LOCK) { |
1136 | cdo->lock_door(cdi, 0); | |
1137 | cdinfo(CD_OPEN, "door unlocked.\n"); | |
1138 | } | |
1139 | return ret; | |
1140 | } | |
1141 | ||
1142 | /* This code is similar to that in open_for_data. The routine is called | |
1143 | whenever an audio play operation is requested. | |
1144 | */ | |
1145 | int check_for_audio_disc(struct cdrom_device_info * cdi, | |
1146 | struct cdrom_device_ops * cdo) | |
1147 | { | |
1148 | int ret; | |
1149 | tracktype tracks; | |
1150 | cdinfo(CD_OPEN, "entering check_for_audio_disc\n"); | |
1151 | if (!(cdi->options & CDO_CHECK_TYPE)) | |
1152 | return 0; | |
1153 | if (cdo->drive_status != NULL) { | |
1154 | ret = cdo->drive_status(cdi, CDSL_CURRENT); | |
1155 | cdinfo(CD_OPEN, "drive_status=%d\n", ret); | |
1156 | if (ret == CDS_TRAY_OPEN) { | |
1157 | cdinfo(CD_OPEN, "the tray is open...\n"); | |
1158 | /* can/may i close it? */ | |
1159 | if (CDROM_CAN(CDC_CLOSE_TRAY) && | |
1160 | cdi->options & CDO_AUTO_CLOSE) { | |
1161 | cdinfo(CD_OPEN, "trying to close the tray.\n"); | |
1162 | ret=cdo->tray_move(cdi,0); | |
1163 | if (ret) { | |
1164 | cdinfo(CD_OPEN, "bummer. tried to close tray but failed.\n"); | |
1165 | /* Ignore the error from the low | |
1166 | level driver. We don't care why it | |
1167 | couldn't close the tray. We only care | |
1168 | that there is no disc in the drive, | |
1169 | since that is the _REAL_ problem here.*/ | |
1170 | return -ENOMEDIUM; | |
1171 | } | |
1172 | } else { | |
1173 | cdinfo(CD_OPEN, "bummer. this driver can't close the tray.\n"); | |
1174 | return -ENOMEDIUM; | |
1175 | } | |
1176 | /* Ok, the door should be closed now.. Check again */ | |
1177 | ret = cdo->drive_status(cdi, CDSL_CURRENT); | |
1178 | if ((ret == CDS_NO_DISC) || (ret==CDS_TRAY_OPEN)) { | |
1179 | cdinfo(CD_OPEN, "bummer. the tray is still not closed.\n"); | |
1180 | return -ENOMEDIUM; | |
1181 | } | |
1182 | if (ret!=CDS_DISC_OK) { | |
1183 | cdinfo(CD_OPEN, "bummer. disc isn't ready.\n"); | |
1184 | return -EIO; | |
1185 | } | |
1186 | cdinfo(CD_OPEN, "the tray is now closed.\n"); | |
1187 | } | |
1188 | } | |
1189 | cdrom_count_tracks(cdi, &tracks); | |
1190 | if (tracks.error) | |
1191 | return(tracks.error); | |
1192 | ||
1193 | if (tracks.audio==0) | |
1194 | return -EMEDIUMTYPE; | |
1195 | ||
1196 | return 0; | |
1197 | } | |
1198 | ||
1199 | /* Admittedly, the logic below could be performed in a nicer way. */ | |
1200 | int cdrom_release(struct cdrom_device_info *cdi, struct file *fp) | |
1201 | { | |
1202 | struct cdrom_device_ops *cdo = cdi->ops; | |
1203 | int opened_for_data; | |
1204 | ||
1205 | cdinfo(CD_CLOSE, "entering cdrom_release\n"); | |
1206 | ||
1207 | if (cdi->use_count > 0) | |
1208 | cdi->use_count--; | |
1209 | if (cdi->use_count == 0) | |
1210 | cdinfo(CD_CLOSE, "Use count for \"/dev/%s\" now zero\n", cdi->name); | |
1211 | if (cdi->use_count == 0) | |
1212 | cdrom_dvd_rw_close_write(cdi); | |
1213 | if (cdi->use_count == 0 && | |
1214 | (cdo->capability & CDC_LOCK) && !keeplocked) { | |
1215 | cdinfo(CD_CLOSE, "Unlocking door!\n"); | |
1216 | cdo->lock_door(cdi, 0); | |
1217 | } | |
1218 | opened_for_data = !(cdi->options & CDO_USE_FFLAGS) || | |
1219 | !(fp && fp->f_flags & O_NONBLOCK); | |
1220 | ||
1221 | /* | |
1222 | * flush cache on last write release | |
1223 | */ | |
1224 | if (CDROM_CAN(CDC_RAM) && !cdi->use_count && cdi->for_data) | |
1225 | cdrom_close_write(cdi); | |
1226 | ||
1227 | cdo->release(cdi); | |
1228 | if (cdi->use_count == 0) { /* last process that closes dev*/ | |
1229 | if (opened_for_data && | |
1230 | cdi->options & CDO_AUTO_EJECT && CDROM_CAN(CDC_OPEN_TRAY)) | |
1231 | cdo->tray_move(cdi, 1); | |
1232 | } | |
1233 | return 0; | |
1234 | } | |
1235 | ||
1236 | static int cdrom_read_mech_status(struct cdrom_device_info *cdi, | |
1237 | struct cdrom_changer_info *buf) | |
1238 | { | |
1239 | struct packet_command cgc; | |
1240 | struct cdrom_device_ops *cdo = cdi->ops; | |
1241 | int length; | |
1242 | ||
1243 | /* | |
1244 | * Sanyo changer isn't spec compliant (doesn't use regular change | |
1245 | * LOAD_UNLOAD command, and it doesn't implement the mech status | |
1246 | * command below | |
1247 | */ | |
1248 | if (cdi->sanyo_slot) { | |
1249 | buf->hdr.nslots = 3; | |
1250 | buf->hdr.curslot = cdi->sanyo_slot == 3 ? 0 : cdi->sanyo_slot; | |
1251 | for (length = 0; length < 3; length++) { | |
1252 | buf->slots[length].disc_present = 1; | |
1253 | buf->slots[length].change = 0; | |
1254 | } | |
1255 | return 0; | |
1256 | } | |
1257 | ||
1258 | length = sizeof(struct cdrom_mechstat_header) + | |
1259 | cdi->capacity * sizeof(struct cdrom_slot); | |
1260 | ||
1261 | init_cdrom_command(&cgc, buf, length, CGC_DATA_READ); | |
1262 | cgc.cmd[0] = GPCMD_MECHANISM_STATUS; | |
1263 | cgc.cmd[8] = (length >> 8) & 0xff; | |
1264 | cgc.cmd[9] = length & 0xff; | |
1265 | return cdo->generic_packet(cdi, &cgc); | |
1266 | } | |
1267 | ||
1268 | static int cdrom_slot_status(struct cdrom_device_info *cdi, int slot) | |
1269 | { | |
1270 | struct cdrom_changer_info *info; | |
1271 | int ret; | |
1272 | ||
1273 | cdinfo(CD_CHANGER, "entering cdrom_slot_status()\n"); | |
1274 | if (cdi->sanyo_slot) | |
1275 | return CDS_NO_INFO; | |
1276 | ||
1277 | info = kmalloc(sizeof(*info), GFP_KERNEL); | |
1278 | if (!info) | |
1279 | return -ENOMEM; | |
1280 | ||
1281 | if ((ret = cdrom_read_mech_status(cdi, info))) | |
1282 | goto out_free; | |
1283 | ||
1284 | if (info->slots[slot].disc_present) | |
1285 | ret = CDS_DISC_OK; | |
1286 | else | |
1287 | ret = CDS_NO_DISC; | |
1288 | ||
1289 | out_free: | |
1290 | kfree(info); | |
1291 | return ret; | |
1292 | } | |
1293 | ||
1294 | /* Return the number of slots for an ATAPI/SCSI cdrom, | |
1295 | * return 1 if not a changer. | |
1296 | */ | |
1297 | int cdrom_number_of_slots(struct cdrom_device_info *cdi) | |
1298 | { | |
1299 | int status; | |
1300 | int nslots = 1; | |
1301 | struct cdrom_changer_info *info; | |
1302 | ||
1303 | cdinfo(CD_CHANGER, "entering cdrom_number_of_slots()\n"); | |
1304 | /* cdrom_read_mech_status requires a valid value for capacity: */ | |
1305 | cdi->capacity = 0; | |
1306 | ||
1307 | info = kmalloc(sizeof(*info), GFP_KERNEL); | |
1308 | if (!info) | |
1309 | return -ENOMEM; | |
1310 | ||
1311 | if ((status = cdrom_read_mech_status(cdi, info)) == 0) | |
1312 | nslots = info->hdr.nslots; | |
1313 | ||
1314 | kfree(info); | |
1315 | return nslots; | |
1316 | } | |
1317 | ||
1318 | ||
1319 | /* If SLOT < 0, unload the current slot. Otherwise, try to load SLOT. */ | |
1320 | static int cdrom_load_unload(struct cdrom_device_info *cdi, int slot) | |
1321 | { | |
1322 | struct packet_command cgc; | |
1323 | ||
1324 | cdinfo(CD_CHANGER, "entering cdrom_load_unload()\n"); | |
1325 | if (cdi->sanyo_slot && slot < 0) | |
1326 | return 0; | |
1327 | ||
1328 | init_cdrom_command(&cgc, NULL, 0, CGC_DATA_NONE); | |
1329 | cgc.cmd[0] = GPCMD_LOAD_UNLOAD; | |
1330 | cgc.cmd[4] = 2 + (slot >= 0); | |
1331 | cgc.cmd[8] = slot; | |
1332 | cgc.timeout = 60 * HZ; | |
1333 | ||
1334 | /* The Sanyo 3 CD changer uses byte 7 of the | |
1335 | GPCMD_TEST_UNIT_READY to command to switch CDs instead of | |
1336 | using the GPCMD_LOAD_UNLOAD opcode. */ | |
1337 | if (cdi->sanyo_slot && -1 < slot) { | |
1338 | cgc.cmd[0] = GPCMD_TEST_UNIT_READY; | |
1339 | cgc.cmd[7] = slot; | |
1340 | cgc.cmd[4] = cgc.cmd[8] = 0; | |
1341 | cdi->sanyo_slot = slot ? slot : 3; | |
1342 | } | |
1343 | ||
1344 | return cdi->ops->generic_packet(cdi, &cgc); | |
1345 | } | |
1346 | ||
1347 | static int cdrom_select_disc(struct cdrom_device_info *cdi, int slot) | |
1348 | { | |
1349 | struct cdrom_changer_info *info; | |
1350 | int curslot; | |
1351 | int ret; | |
1352 | ||
1353 | cdinfo(CD_CHANGER, "entering cdrom_select_disc()\n"); | |
1354 | if (!CDROM_CAN(CDC_SELECT_DISC)) | |
1355 | return -EDRIVE_CANT_DO_THIS; | |
1356 | ||
1357 | (void) cdi->ops->media_changed(cdi, slot); | |
1358 | ||
1359 | if (slot == CDSL_NONE) { | |
1360 | /* set media changed bits, on both queues */ | |
1361 | cdi->mc_flags = 0x3; | |
1362 | return cdrom_load_unload(cdi, -1); | |
1363 | } | |
1364 | ||
1365 | info = kmalloc(sizeof(*info), GFP_KERNEL); | |
1366 | if (!info) | |
1367 | return -ENOMEM; | |
1368 | ||
1369 | if ((ret = cdrom_read_mech_status(cdi, info))) { | |
1370 | kfree(info); | |
1371 | return ret; | |
1372 | } | |
1373 | ||
1374 | curslot = info->hdr.curslot; | |
1375 | kfree(info); | |
1376 | ||
1377 | if (cdi->use_count > 1 || keeplocked) { | |
1378 | if (slot == CDSL_CURRENT) { | |
1379 | return curslot; | |
1380 | } else { | |
1381 | return -EBUSY; | |
1382 | } | |
1383 | } | |
1384 | ||
1385 | /* Specifying CDSL_CURRENT will attempt to load the currnet slot, | |
1386 | which is useful if it had been previously unloaded. | |
1387 | Whether it can or not, it returns the current slot. | |
1388 | Similarly, if slot happens to be the current one, we still | |
1389 | try and load it. */ | |
1390 | if (slot == CDSL_CURRENT) | |
1391 | slot = curslot; | |
1392 | ||
1393 | /* set media changed bits on both queues */ | |
1394 | cdi->mc_flags = 0x3; | |
1395 | if ((ret = cdrom_load_unload(cdi, slot))) | |
1396 | return ret; | |
1397 | ||
1398 | return slot; | |
1399 | } | |
1400 | ||
1401 | /* We want to make media_changed accessible to the user through an | |
1402 | * ioctl. The main problem now is that we must double-buffer the | |
1403 | * low-level implementation, to assure that the VFS and the user both | |
1404 | * see a medium change once. | |
1405 | */ | |
1406 | ||
1407 | static | |
1408 | int media_changed(struct cdrom_device_info *cdi, int queue) | |
1409 | { | |
1410 | unsigned int mask = (1 << (queue & 1)); | |
1411 | int ret = !!(cdi->mc_flags & mask); | |
1412 | ||
1413 | if (!CDROM_CAN(CDC_MEDIA_CHANGED)) | |
1414 | return ret; | |
1415 | /* changed since last call? */ | |
1416 | if (cdi->ops->media_changed(cdi, CDSL_CURRENT)) { | |
1417 | cdi->mc_flags = 0x3; /* set bit on both queues */ | |
1418 | ret |= 1; | |
1419 | cdi->media_written = 0; | |
1420 | } | |
1421 | cdi->mc_flags &= ~mask; /* clear bit */ | |
1422 | return ret; | |
1423 | } | |
1424 | ||
1425 | int cdrom_media_changed(struct cdrom_device_info *cdi) | |
1426 | { | |
1427 | /* This talks to the VFS, which doesn't like errors - just 1 or 0. | |
1428 | * Returning "0" is always safe (media hasn't been changed). Do that | |
1429 | * if the low-level cdrom driver dosn't support media changed. */ | |
1430 | if (cdi == NULL || cdi->ops->media_changed == NULL) | |
1431 | return 0; | |
1432 | if (!CDROM_CAN(CDC_MEDIA_CHANGED)) | |
1433 | return 0; | |
1434 | return media_changed(cdi, 0); | |
1435 | } | |
1436 | ||
1437 | /* badly broken, I know. Is due for a fixup anytime. */ | |
1438 | static void cdrom_count_tracks(struct cdrom_device_info *cdi, tracktype* tracks) | |
1439 | { | |
1440 | struct cdrom_tochdr header; | |
1441 | struct cdrom_tocentry entry; | |
1442 | int ret, i; | |
1443 | tracks->data=0; | |
1444 | tracks->audio=0; | |
1445 | tracks->cdi=0; | |
1446 | tracks->xa=0; | |
1447 | tracks->error=0; | |
1448 | cdinfo(CD_COUNT_TRACKS, "entering cdrom_count_tracks\n"); | |
1449 | if (!CDROM_CAN(CDC_PLAY_AUDIO)) { | |
1450 | tracks->error=CDS_NO_INFO; | |
1451 | return; | |
1452 | } | |
1453 | /* Grab the TOC header so we can see how many tracks there are */ | |
1454 | if ((ret = cdi->ops->audio_ioctl(cdi, CDROMREADTOCHDR, &header))) { | |
1455 | if (ret == -ENOMEDIUM) | |
1456 | tracks->error = CDS_NO_DISC; | |
1457 | else | |
1458 | tracks->error = CDS_NO_INFO; | |
1459 | return; | |
1460 | } | |
1461 | /* check what type of tracks are on this disc */ | |
1462 | entry.cdte_format = CDROM_MSF; | |
1463 | for (i = header.cdth_trk0; i <= header.cdth_trk1; i++) { | |
1464 | entry.cdte_track = i; | |
1465 | if (cdi->ops->audio_ioctl(cdi, CDROMREADTOCENTRY, &entry)) { | |
1466 | tracks->error=CDS_NO_INFO; | |
1467 | return; | |
1468 | } | |
1469 | if (entry.cdte_ctrl & CDROM_DATA_TRACK) { | |
1470 | if (entry.cdte_format == 0x10) | |
1471 | tracks->cdi++; | |
1472 | else if (entry.cdte_format == 0x20) | |
1473 | tracks->xa++; | |
1474 | else | |
1475 | tracks->data++; | |
1476 | } else | |
1477 | tracks->audio++; | |
1478 | cdinfo(CD_COUNT_TRACKS, "track %d: format=%d, ctrl=%d\n", | |
1479 | i, entry.cdte_format, entry.cdte_ctrl); | |
1480 | } | |
1481 | cdinfo(CD_COUNT_TRACKS, "disc has %d tracks: %d=audio %d=data %d=Cd-I %d=XA\n", | |
1482 | header.cdth_trk1, tracks->audio, tracks->data, | |
1483 | tracks->cdi, tracks->xa); | |
1484 | } | |
1485 | ||
1486 | /* Requests to the low-level drivers will /always/ be done in the | |
1487 | following format convention: | |
1488 | ||
1489 | CDROM_LBA: all data-related requests. | |
1490 | CDROM_MSF: all audio-related requests. | |
1491 | ||
1492 | However, a low-level implementation is allowed to refuse this | |
1493 | request, and return information in its own favorite format. | |
1494 | ||
1495 | It doesn't make sense /at all/ to ask for a play_audio in LBA | |
1496 | format, or ask for multi-session info in MSF format. However, for | |
1497 | backward compatibility these format requests will be satisfied, but | |
1498 | the requests to the low-level drivers will be sanitized in the more | |
1499 | meaningful format indicated above. | |
1500 | */ | |
1501 | ||
1502 | static | |
1503 | void sanitize_format(union cdrom_addr *addr, | |
1504 | u_char * curr, u_char requested) | |
1505 | { | |
1506 | if (*curr == requested) | |
1507 | return; /* nothing to be done! */ | |
1508 | if (requested == CDROM_LBA) { | |
1509 | addr->lba = (int) addr->msf.frame + | |
1510 | 75 * (addr->msf.second - 2 + 60 * addr->msf.minute); | |
1511 | } else { /* CDROM_MSF */ | |
1512 | int lba = addr->lba; | |
1513 | addr->msf.frame = lba % 75; | |
1514 | lba /= 75; | |
1515 | lba += 2; | |
1516 | addr->msf.second = lba % 60; | |
1517 | addr->msf.minute = lba / 60; | |
1518 | } | |
1519 | *curr = requested; | |
1520 | } | |
1521 | ||
1522 | void init_cdrom_command(struct packet_command *cgc, void *buf, int len, | |
1523 | int type) | |
1524 | { | |
1525 | memset(cgc, 0, sizeof(struct packet_command)); | |
1526 | if (buf) | |
1527 | memset(buf, 0, len); | |
1528 | cgc->buffer = (char *) buf; | |
1529 | cgc->buflen = len; | |
1530 | cgc->data_direction = type; | |
1531 | cgc->timeout = 5*HZ; | |
1532 | } | |
1533 | ||
1534 | /* DVD handling */ | |
1535 | ||
1536 | #define copy_key(dest,src) memcpy((dest), (src), sizeof(dvd_key)) | |
1537 | #define copy_chal(dest,src) memcpy((dest), (src), sizeof(dvd_challenge)) | |
1538 | ||
1539 | static void setup_report_key(struct packet_command *cgc, unsigned agid, unsigned type) | |
1540 | { | |
1541 | cgc->cmd[0] = GPCMD_REPORT_KEY; | |
1542 | cgc->cmd[10] = type | (agid << 6); | |
1543 | switch (type) { | |
1544 | case 0: case 8: case 5: { | |
1545 | cgc->buflen = 8; | |
1546 | break; | |
1547 | } | |
1548 | case 1: { | |
1549 | cgc->buflen = 16; | |
1550 | break; | |
1551 | } | |
1552 | case 2: case 4: { | |
1553 | cgc->buflen = 12; | |
1554 | break; | |
1555 | } | |
1556 | } | |
1557 | cgc->cmd[9] = cgc->buflen; | |
1558 | cgc->data_direction = CGC_DATA_READ; | |
1559 | } | |
1560 | ||
1561 | static void setup_send_key(struct packet_command *cgc, unsigned agid, unsigned type) | |
1562 | { | |
1563 | cgc->cmd[0] = GPCMD_SEND_KEY; | |
1564 | cgc->cmd[10] = type | (agid << 6); | |
1565 | switch (type) { | |
1566 | case 1: { | |
1567 | cgc->buflen = 16; | |
1568 | break; | |
1569 | } | |
1570 | case 3: { | |
1571 | cgc->buflen = 12; | |
1572 | break; | |
1573 | } | |
1574 | case 6: { | |
1575 | cgc->buflen = 8; | |
1576 | break; | |
1577 | } | |
1578 | } | |
1579 | cgc->cmd[9] = cgc->buflen; | |
1580 | cgc->data_direction = CGC_DATA_WRITE; | |
1581 | } | |
1582 | ||
1583 | static int dvd_do_auth(struct cdrom_device_info *cdi, dvd_authinfo *ai) | |
1584 | { | |
1585 | int ret; | |
1586 | u_char buf[20]; | |
1587 | struct packet_command cgc; | |
1588 | struct cdrom_device_ops *cdo = cdi->ops; | |
1589 | rpc_state_t rpc_state; | |
1590 | ||
1591 | memset(buf, 0, sizeof(buf)); | |
1592 | init_cdrom_command(&cgc, buf, 0, CGC_DATA_READ); | |
1593 | ||
1594 | switch (ai->type) { | |
1595 | /* LU data send */ | |
1596 | case DVD_LU_SEND_AGID: | |
1597 | cdinfo(CD_DVD, "entering DVD_LU_SEND_AGID\n"); | |
1598 | cgc.quiet = 1; | |
1599 | setup_report_key(&cgc, ai->lsa.agid, 0); | |
1600 | ||
1601 | if ((ret = cdo->generic_packet(cdi, &cgc))) | |
1602 | return ret; | |
1603 | ||
1604 | ai->lsa.agid = buf[7] >> 6; | |
1605 | /* Returning data, let host change state */ | |
1606 | break; | |
1607 | ||
1608 | case DVD_LU_SEND_KEY1: | |
1609 | cdinfo(CD_DVD, "entering DVD_LU_SEND_KEY1\n"); | |
1610 | setup_report_key(&cgc, ai->lsk.agid, 2); | |
1611 | ||
1612 | if ((ret = cdo->generic_packet(cdi, &cgc))) | |
1613 | return ret; | |
1614 | ||
1615 | copy_key(ai->lsk.key, &buf[4]); | |
1616 | /* Returning data, let host change state */ | |
1617 | break; | |
1618 | ||
1619 | case DVD_LU_SEND_CHALLENGE: | |
1620 | cdinfo(CD_DVD, "entering DVD_LU_SEND_CHALLENGE\n"); | |
1621 | setup_report_key(&cgc, ai->lsc.agid, 1); | |
1622 | ||
1623 | if ((ret = cdo->generic_packet(cdi, &cgc))) | |
1624 | return ret; | |
1625 | ||
1626 | copy_chal(ai->lsc.chal, &buf[4]); | |
1627 | /* Returning data, let host change state */ | |
1628 | break; | |
1629 | ||
1630 | /* Post-auth key */ | |
1631 | case DVD_LU_SEND_TITLE_KEY: | |
1632 | cdinfo(CD_DVD, "entering DVD_LU_SEND_TITLE_KEY\n"); | |
1633 | cgc.quiet = 1; | |
1634 | setup_report_key(&cgc, ai->lstk.agid, 4); | |
1635 | cgc.cmd[5] = ai->lstk.lba; | |
1636 | cgc.cmd[4] = ai->lstk.lba >> 8; | |
1637 | cgc.cmd[3] = ai->lstk.lba >> 16; | |
1638 | cgc.cmd[2] = ai->lstk.lba >> 24; | |
1639 | ||
1640 | if ((ret = cdo->generic_packet(cdi, &cgc))) | |
1641 | return ret; | |
1642 | ||
1643 | ai->lstk.cpm = (buf[4] >> 7) & 1; | |
1644 | ai->lstk.cp_sec = (buf[4] >> 6) & 1; | |
1645 | ai->lstk.cgms = (buf[4] >> 4) & 3; | |
1646 | copy_key(ai->lstk.title_key, &buf[5]); | |
1647 | /* Returning data, let host change state */ | |
1648 | break; | |
1649 | ||
1650 | case DVD_LU_SEND_ASF: | |
1651 | cdinfo(CD_DVD, "entering DVD_LU_SEND_ASF\n"); | |
1652 | setup_report_key(&cgc, ai->lsasf.agid, 5); | |
1653 | ||
1654 | if ((ret = cdo->generic_packet(cdi, &cgc))) | |
1655 | return ret; | |
1656 | ||
1657 | ai->lsasf.asf = buf[7] & 1; | |
1658 | break; | |
1659 | ||
1660 | /* LU data receive (LU changes state) */ | |
1661 | case DVD_HOST_SEND_CHALLENGE: | |
1662 | cdinfo(CD_DVD, "entering DVD_HOST_SEND_CHALLENGE\n"); | |
1663 | setup_send_key(&cgc, ai->hsc.agid, 1); | |
1664 | buf[1] = 0xe; | |
1665 | copy_chal(&buf[4], ai->hsc.chal); | |
1666 | ||
1667 | if ((ret = cdo->generic_packet(cdi, &cgc))) | |
1668 | return ret; | |
1669 | ||
1670 | ai->type = DVD_LU_SEND_KEY1; | |
1671 | break; | |
1672 | ||
1673 | case DVD_HOST_SEND_KEY2: | |
1674 | cdinfo(CD_DVD, "entering DVD_HOST_SEND_KEY2\n"); | |
1675 | setup_send_key(&cgc, ai->hsk.agid, 3); | |
1676 | buf[1] = 0xa; | |
1677 | copy_key(&buf[4], ai->hsk.key); | |
1678 | ||
1679 | if ((ret = cdo->generic_packet(cdi, &cgc))) { | |
1680 | ai->type = DVD_AUTH_FAILURE; | |
1681 | return ret; | |
1682 | } | |
1683 | ai->type = DVD_AUTH_ESTABLISHED; | |
1684 | break; | |
1685 | ||
1686 | /* Misc */ | |
1687 | case DVD_INVALIDATE_AGID: | |
1688 | cgc.quiet = 1; | |
1689 | cdinfo(CD_DVD, "entering DVD_INVALIDATE_AGID\n"); | |
1690 | setup_report_key(&cgc, ai->lsa.agid, 0x3f); | |
1691 | if ((ret = cdo->generic_packet(cdi, &cgc))) | |
1692 | return ret; | |
1693 | break; | |
1694 | ||
1695 | /* Get region settings */ | |
1696 | case DVD_LU_SEND_RPC_STATE: | |
1697 | cdinfo(CD_DVD, "entering DVD_LU_SEND_RPC_STATE\n"); | |
1698 | setup_report_key(&cgc, 0, 8); | |
1699 | memset(&rpc_state, 0, sizeof(rpc_state_t)); | |
1700 | cgc.buffer = (char *) &rpc_state; | |
1701 | ||
1702 | if ((ret = cdo->generic_packet(cdi, &cgc))) | |
1703 | return ret; | |
1704 | ||
1705 | ai->lrpcs.type = rpc_state.type_code; | |
1706 | ai->lrpcs.vra = rpc_state.vra; | |
1707 | ai->lrpcs.ucca = rpc_state.ucca; | |
1708 | ai->lrpcs.region_mask = rpc_state.region_mask; | |
1709 | ai->lrpcs.rpc_scheme = rpc_state.rpc_scheme; | |
1710 | break; | |
1711 | ||
1712 | /* Set region settings */ | |
1713 | case DVD_HOST_SEND_RPC_STATE: | |
1714 | cdinfo(CD_DVD, "entering DVD_HOST_SEND_RPC_STATE\n"); | |
1715 | setup_send_key(&cgc, 0, 6); | |
1716 | buf[1] = 6; | |
1717 | buf[4] = ai->hrpcs.pdrc; | |
1718 | ||
1719 | if ((ret = cdo->generic_packet(cdi, &cgc))) | |
1720 | return ret; | |
1721 | break; | |
1722 | ||
1723 | default: | |
1724 | cdinfo(CD_WARNING, "Invalid DVD key ioctl (%d)\n", ai->type); | |
1725 | return -ENOTTY; | |
1726 | } | |
1727 | ||
1728 | return 0; | |
1729 | } | |
1730 | ||
1731 | static int dvd_read_physical(struct cdrom_device_info *cdi, dvd_struct *s) | |
1732 | { | |
1733 | unsigned char buf[21], *base; | |
1734 | struct dvd_layer *layer; | |
1735 | struct packet_command cgc; | |
1736 | struct cdrom_device_ops *cdo = cdi->ops; | |
1737 | int ret, layer_num = s->physical.layer_num; | |
1738 | ||
1739 | if (layer_num >= DVD_LAYERS) | |
1740 | return -EINVAL; | |
1741 | ||
1742 | init_cdrom_command(&cgc, buf, sizeof(buf), CGC_DATA_READ); | |
1743 | cgc.cmd[0] = GPCMD_READ_DVD_STRUCTURE; | |
1744 | cgc.cmd[6] = layer_num; | |
1745 | cgc.cmd[7] = s->type; | |
1746 | cgc.cmd[9] = cgc.buflen & 0xff; | |
1747 | ||
1748 | /* | |
1749 | * refrain from reporting errors on non-existing layers (mainly) | |
1750 | */ | |
1751 | cgc.quiet = 1; | |
1752 | ||
1753 | if ((ret = cdo->generic_packet(cdi, &cgc))) | |
1754 | return ret; | |
1755 | ||
1756 | base = &buf[4]; | |
1757 | layer = &s->physical.layer[layer_num]; | |
1758 | ||
1759 | /* | |
1760 | * place the data... really ugly, but at least we won't have to | |
1761 | * worry about endianess in userspace. | |
1762 | */ | |
1763 | memset(layer, 0, sizeof(*layer)); | |
1764 | layer->book_version = base[0] & 0xf; | |
1765 | layer->book_type = base[0] >> 4; | |
1766 | layer->min_rate = base[1] & 0xf; | |
1767 | layer->disc_size = base[1] >> 4; | |
1768 | layer->layer_type = base[2] & 0xf; | |
1769 | layer->track_path = (base[2] >> 4) & 1; | |
1770 | layer->nlayers = (base[2] >> 5) & 3; | |
1771 | layer->track_density = base[3] & 0xf; | |
1772 | layer->linear_density = base[3] >> 4; | |
1773 | layer->start_sector = base[5] << 16 | base[6] << 8 | base[7]; | |
1774 | layer->end_sector = base[9] << 16 | base[10] << 8 | base[11]; | |
1775 | layer->end_sector_l0 = base[13] << 16 | base[14] << 8 | base[15]; | |
1776 | layer->bca = base[16] >> 7; | |
1777 | ||
1778 | return 0; | |
1779 | } | |
1780 | ||
1781 | static int dvd_read_copyright(struct cdrom_device_info *cdi, dvd_struct *s) | |
1782 | { | |
1783 | int ret; | |
1784 | u_char buf[8]; | |
1785 | struct packet_command cgc; | |
1786 | struct cdrom_device_ops *cdo = cdi->ops; | |
1787 | ||
1788 | init_cdrom_command(&cgc, buf, sizeof(buf), CGC_DATA_READ); | |
1789 | cgc.cmd[0] = GPCMD_READ_DVD_STRUCTURE; | |
1790 | cgc.cmd[6] = s->copyright.layer_num; | |
1791 | cgc.cmd[7] = s->type; | |
1792 | cgc.cmd[8] = cgc.buflen >> 8; | |
1793 | cgc.cmd[9] = cgc.buflen & 0xff; | |
1794 | ||
1795 | if ((ret = cdo->generic_packet(cdi, &cgc))) | |
1796 | return ret; | |
1797 | ||
1798 | s->copyright.cpst = buf[4]; | |
1799 | s->copyright.rmi = buf[5]; | |
1800 | ||
1801 | return 0; | |
1802 | } | |
1803 | ||
1804 | static int dvd_read_disckey(struct cdrom_device_info *cdi, dvd_struct *s) | |
1805 | { | |
1806 | int ret, size; | |
1807 | u_char *buf; | |
1808 | struct packet_command cgc; | |
1809 | struct cdrom_device_ops *cdo = cdi->ops; | |
1810 | ||
1811 | size = sizeof(s->disckey.value) + 4; | |
1812 | ||
1813 | if ((buf = (u_char *) kmalloc(size, GFP_KERNEL)) == NULL) | |
1814 | return -ENOMEM; | |
1815 | ||
1816 | init_cdrom_command(&cgc, buf, size, CGC_DATA_READ); | |
1817 | cgc.cmd[0] = GPCMD_READ_DVD_STRUCTURE; | |
1818 | cgc.cmd[7] = s->type; | |
1819 | cgc.cmd[8] = size >> 8; | |
1820 | cgc.cmd[9] = size & 0xff; | |
1821 | cgc.cmd[10] = s->disckey.agid << 6; | |
1822 | ||
1823 | if (!(ret = cdo->generic_packet(cdi, &cgc))) | |
1824 | memcpy(s->disckey.value, &buf[4], sizeof(s->disckey.value)); | |
1825 | ||
1826 | kfree(buf); | |
1827 | return ret; | |
1828 | } | |
1829 | ||
1830 | static int dvd_read_bca(struct cdrom_device_info *cdi, dvd_struct *s) | |
1831 | { | |
1832 | int ret; | |
1833 | u_char buf[4 + 188]; | |
1834 | struct packet_command cgc; | |
1835 | struct cdrom_device_ops *cdo = cdi->ops; | |
1836 | ||
1837 | init_cdrom_command(&cgc, buf, sizeof(buf), CGC_DATA_READ); | |
1838 | cgc.cmd[0] = GPCMD_READ_DVD_STRUCTURE; | |
1839 | cgc.cmd[7] = s->type; | |
454d6fbc | 1840 | cgc.cmd[9] = cgc.buflen & 0xff; |
1da177e4 LT |
1841 | |
1842 | if ((ret = cdo->generic_packet(cdi, &cgc))) | |
1843 | return ret; | |
1844 | ||
1845 | s->bca.len = buf[0] << 8 | buf[1]; | |
1846 | if (s->bca.len < 12 || s->bca.len > 188) { | |
1847 | cdinfo(CD_WARNING, "Received invalid BCA length (%d)\n", s->bca.len); | |
1848 | return -EIO; | |
1849 | } | |
1850 | memcpy(s->bca.value, &buf[4], s->bca.len); | |
1851 | ||
1852 | return 0; | |
1853 | } | |
1854 | ||
1855 | static int dvd_read_manufact(struct cdrom_device_info *cdi, dvd_struct *s) | |
1856 | { | |
1857 | int ret = 0, size; | |
1858 | u_char *buf; | |
1859 | struct packet_command cgc; | |
1860 | struct cdrom_device_ops *cdo = cdi->ops; | |
1861 | ||
1862 | size = sizeof(s->manufact.value) + 4; | |
1863 | ||
1864 | if ((buf = (u_char *) kmalloc(size, GFP_KERNEL)) == NULL) | |
1865 | return -ENOMEM; | |
1866 | ||
1867 | init_cdrom_command(&cgc, buf, size, CGC_DATA_READ); | |
1868 | cgc.cmd[0] = GPCMD_READ_DVD_STRUCTURE; | |
1869 | cgc.cmd[7] = s->type; | |
1870 | cgc.cmd[8] = size >> 8; | |
1871 | cgc.cmd[9] = size & 0xff; | |
1872 | ||
1873 | if ((ret = cdo->generic_packet(cdi, &cgc))) { | |
1874 | kfree(buf); | |
1875 | return ret; | |
1876 | } | |
1877 | ||
1878 | s->manufact.len = buf[0] << 8 | buf[1]; | |
1879 | if (s->manufact.len < 0 || s->manufact.len > 2048) { | |
1880 | cdinfo(CD_WARNING, "Received invalid manufacture info length" | |
1881 | " (%d)\n", s->manufact.len); | |
1882 | ret = -EIO; | |
1883 | } else { | |
1884 | memcpy(s->manufact.value, &buf[4], s->manufact.len); | |
1885 | } | |
1886 | ||
1887 | kfree(buf); | |
1888 | return ret; | |
1889 | } | |
1890 | ||
1891 | static int dvd_read_struct(struct cdrom_device_info *cdi, dvd_struct *s) | |
1892 | { | |
1893 | switch (s->type) { | |
1894 | case DVD_STRUCT_PHYSICAL: | |
1895 | return dvd_read_physical(cdi, s); | |
1896 | ||
1897 | case DVD_STRUCT_COPYRIGHT: | |
1898 | return dvd_read_copyright(cdi, s); | |
1899 | ||
1900 | case DVD_STRUCT_DISCKEY: | |
1901 | return dvd_read_disckey(cdi, s); | |
1902 | ||
1903 | case DVD_STRUCT_BCA: | |
1904 | return dvd_read_bca(cdi, s); | |
1905 | ||
1906 | case DVD_STRUCT_MANUFACT: | |
1907 | return dvd_read_manufact(cdi, s); | |
1908 | ||
1909 | default: | |
1910 | cdinfo(CD_WARNING, ": Invalid DVD structure read requested (%d)\n", | |
1911 | s->type); | |
1912 | return -EINVAL; | |
1913 | } | |
1914 | } | |
1915 | ||
1916 | int cdrom_mode_sense(struct cdrom_device_info *cdi, | |
1917 | struct packet_command *cgc, | |
1918 | int page_code, int page_control) | |
1919 | { | |
1920 | struct cdrom_device_ops *cdo = cdi->ops; | |
1921 | ||
1922 | memset(cgc->cmd, 0, sizeof(cgc->cmd)); | |
1923 | ||
1924 | cgc->cmd[0] = GPCMD_MODE_SENSE_10; | |
1925 | cgc->cmd[2] = page_code | (page_control << 6); | |
1926 | cgc->cmd[7] = cgc->buflen >> 8; | |
1927 | cgc->cmd[8] = cgc->buflen & 0xff; | |
1928 | cgc->data_direction = CGC_DATA_READ; | |
1929 | return cdo->generic_packet(cdi, cgc); | |
1930 | } | |
1931 | ||
1932 | int cdrom_mode_select(struct cdrom_device_info *cdi, | |
1933 | struct packet_command *cgc) | |
1934 | { | |
1935 | struct cdrom_device_ops *cdo = cdi->ops; | |
1936 | ||
1937 | memset(cgc->cmd, 0, sizeof(cgc->cmd)); | |
1938 | memset(cgc->buffer, 0, 2); | |
1939 | cgc->cmd[0] = GPCMD_MODE_SELECT_10; | |
1940 | cgc->cmd[1] = 0x10; /* PF */ | |
1941 | cgc->cmd[7] = cgc->buflen >> 8; | |
1942 | cgc->cmd[8] = cgc->buflen & 0xff; | |
1943 | cgc->data_direction = CGC_DATA_WRITE; | |
1944 | return cdo->generic_packet(cdi, cgc); | |
1945 | } | |
1946 | ||
1947 | static int cdrom_read_subchannel(struct cdrom_device_info *cdi, | |
1948 | struct cdrom_subchnl *subchnl, int mcn) | |
1949 | { | |
1950 | struct cdrom_device_ops *cdo = cdi->ops; | |
1951 | struct packet_command cgc; | |
1952 | char buffer[32]; | |
1953 | int ret; | |
1954 | ||
1955 | init_cdrom_command(&cgc, buffer, 16, CGC_DATA_READ); | |
1956 | cgc.cmd[0] = GPCMD_READ_SUBCHANNEL; | |
1957 | cgc.cmd[1] = 2; /* MSF addressing */ | |
1958 | cgc.cmd[2] = 0x40; /* request subQ data */ | |
1959 | cgc.cmd[3] = mcn ? 2 : 1; | |
1960 | cgc.cmd[8] = 16; | |
1961 | ||
1962 | if ((ret = cdo->generic_packet(cdi, &cgc))) | |
1963 | return ret; | |
1964 | ||
1965 | subchnl->cdsc_audiostatus = cgc.buffer[1]; | |
1966 | subchnl->cdsc_format = CDROM_MSF; | |
1967 | subchnl->cdsc_ctrl = cgc.buffer[5] & 0xf; | |
1968 | subchnl->cdsc_trk = cgc.buffer[6]; | |
1969 | subchnl->cdsc_ind = cgc.buffer[7]; | |
1970 | ||
1971 | subchnl->cdsc_reladdr.msf.minute = cgc.buffer[13]; | |
1972 | subchnl->cdsc_reladdr.msf.second = cgc.buffer[14]; | |
1973 | subchnl->cdsc_reladdr.msf.frame = cgc.buffer[15]; | |
1974 | subchnl->cdsc_absaddr.msf.minute = cgc.buffer[9]; | |
1975 | subchnl->cdsc_absaddr.msf.second = cgc.buffer[10]; | |
1976 | subchnl->cdsc_absaddr.msf.frame = cgc.buffer[11]; | |
1977 | ||
1978 | return 0; | |
1979 | } | |
1980 | ||
1981 | /* | |
1982 | * Specific READ_10 interface | |
1983 | */ | |
1984 | static int cdrom_read_cd(struct cdrom_device_info *cdi, | |
1985 | struct packet_command *cgc, int lba, | |
1986 | int blocksize, int nblocks) | |
1987 | { | |
1988 | struct cdrom_device_ops *cdo = cdi->ops; | |
1989 | ||
1990 | memset(&cgc->cmd, 0, sizeof(cgc->cmd)); | |
1991 | cgc->cmd[0] = GPCMD_READ_10; | |
1992 | cgc->cmd[2] = (lba >> 24) & 0xff; | |
1993 | cgc->cmd[3] = (lba >> 16) & 0xff; | |
1994 | cgc->cmd[4] = (lba >> 8) & 0xff; | |
1995 | cgc->cmd[5] = lba & 0xff; | |
1996 | cgc->cmd[6] = (nblocks >> 16) & 0xff; | |
1997 | cgc->cmd[7] = (nblocks >> 8) & 0xff; | |
1998 | cgc->cmd[8] = nblocks & 0xff; | |
1999 | cgc->buflen = blocksize * nblocks; | |
2000 | return cdo->generic_packet(cdi, cgc); | |
2001 | } | |
2002 | ||
2003 | /* very generic interface for reading the various types of blocks */ | |
2004 | static int cdrom_read_block(struct cdrom_device_info *cdi, | |
2005 | struct packet_command *cgc, | |
2006 | int lba, int nblocks, int format, int blksize) | |
2007 | { | |
2008 | struct cdrom_device_ops *cdo = cdi->ops; | |
2009 | ||
2010 | memset(&cgc->cmd, 0, sizeof(cgc->cmd)); | |
2011 | cgc->cmd[0] = GPCMD_READ_CD; | |
2012 | /* expected sector size - cdda,mode1,etc. */ | |
2013 | cgc->cmd[1] = format << 2; | |
2014 | /* starting address */ | |
2015 | cgc->cmd[2] = (lba >> 24) & 0xff; | |
2016 | cgc->cmd[3] = (lba >> 16) & 0xff; | |
2017 | cgc->cmd[4] = (lba >> 8) & 0xff; | |
2018 | cgc->cmd[5] = lba & 0xff; | |
2019 | /* number of blocks */ | |
2020 | cgc->cmd[6] = (nblocks >> 16) & 0xff; | |
2021 | cgc->cmd[7] = (nblocks >> 8) & 0xff; | |
2022 | cgc->cmd[8] = nblocks & 0xff; | |
2023 | cgc->buflen = blksize * nblocks; | |
2024 | ||
2025 | /* set the header info returned */ | |
2026 | switch (blksize) { | |
2027 | case CD_FRAMESIZE_RAW0 : cgc->cmd[9] = 0x58; break; | |
2028 | case CD_FRAMESIZE_RAW1 : cgc->cmd[9] = 0x78; break; | |
2029 | case CD_FRAMESIZE_RAW : cgc->cmd[9] = 0xf8; break; | |
2030 | default : cgc->cmd[9] = 0x10; | |
2031 | } | |
2032 | ||
2033 | return cdo->generic_packet(cdi, cgc); | |
2034 | } | |
2035 | ||
2036 | static int cdrom_read_cdda_old(struct cdrom_device_info *cdi, __u8 __user *ubuf, | |
2037 | int lba, int nframes) | |
2038 | { | |
2039 | struct packet_command cgc; | |
2040 | int ret = 0; | |
2041 | int nr; | |
2042 | ||
2043 | cdi->last_sense = 0; | |
2044 | ||
2045 | memset(&cgc, 0, sizeof(cgc)); | |
2046 | ||
2047 | /* | |
2048 | * start with will ra.nframes size, back down if alloc fails | |
2049 | */ | |
2050 | nr = nframes; | |
2051 | do { | |
2052 | cgc.buffer = kmalloc(CD_FRAMESIZE_RAW * nr, GFP_KERNEL); | |
2053 | if (cgc.buffer) | |
2054 | break; | |
2055 | ||
2056 | nr >>= 1; | |
2057 | } while (nr); | |
2058 | ||
2059 | if (!nr) | |
2060 | return -ENOMEM; | |
2061 | ||
2062 | if (!access_ok(VERIFY_WRITE, ubuf, nframes * CD_FRAMESIZE_RAW)) { | |
2063 | ret = -EFAULT; | |
2064 | goto out; | |
2065 | } | |
2066 | ||
2067 | cgc.data_direction = CGC_DATA_READ; | |
2068 | while (nframes > 0) { | |
2069 | if (nr > nframes) | |
2070 | nr = nframes; | |
2071 | ||
2072 | ret = cdrom_read_block(cdi, &cgc, lba, nr, 1, CD_FRAMESIZE_RAW); | |
2073 | if (ret) | |
2074 | break; | |
2075 | if (__copy_to_user(ubuf, cgc.buffer, CD_FRAMESIZE_RAW * nr)) { | |
2076 | ret = -EFAULT; | |
2077 | break; | |
2078 | } | |
2079 | ubuf += CD_FRAMESIZE_RAW * nr; | |
2080 | nframes -= nr; | |
2081 | lba += nr; | |
2082 | } | |
2083 | out: | |
2084 | kfree(cgc.buffer); | |
2085 | return ret; | |
2086 | } | |
2087 | ||
2088 | static int cdrom_read_cdda_bpc(struct cdrom_device_info *cdi, __u8 __user *ubuf, | |
2089 | int lba, int nframes) | |
2090 | { | |
2091 | request_queue_t *q = cdi->disk->queue; | |
2092 | struct request *rq; | |
2093 | struct bio *bio; | |
2094 | unsigned int len; | |
2095 | int nr, ret = 0; | |
2096 | ||
2097 | if (!q) | |
2098 | return -ENXIO; | |
2099 | ||
dd1cab95 JA |
2100 | rq = blk_get_request(q, READ, GFP_KERNEL); |
2101 | if (!rq) | |
2102 | return -ENOMEM; | |
2103 | ||
1da177e4 LT |
2104 | cdi->last_sense = 0; |
2105 | ||
2106 | while (nframes) { | |
2107 | nr = nframes; | |
2108 | if (cdi->cdda_method == CDDA_BPC_SINGLE) | |
2109 | nr = 1; | |
2110 | if (nr * CD_FRAMESIZE_RAW > (q->max_sectors << 9)) | |
2111 | nr = (q->max_sectors << 9) / CD_FRAMESIZE_RAW; | |
2112 | ||
2113 | len = nr * CD_FRAMESIZE_RAW; | |
2114 | ||
dd1cab95 JA |
2115 | ret = blk_rq_map_user(q, rq, ubuf, len); |
2116 | if (ret) | |
2117 | break; | |
1da177e4 LT |
2118 | |
2119 | memset(rq->cmd, 0, sizeof(rq->cmd)); | |
2120 | rq->cmd[0] = GPCMD_READ_CD; | |
2121 | rq->cmd[1] = 1 << 2; | |
2122 | rq->cmd[2] = (lba >> 24) & 0xff; | |
2123 | rq->cmd[3] = (lba >> 16) & 0xff; | |
2124 | rq->cmd[4] = (lba >> 8) & 0xff; | |
2125 | rq->cmd[5] = lba & 0xff; | |
2126 | rq->cmd[6] = (nr >> 16) & 0xff; | |
2127 | rq->cmd[7] = (nr >> 8) & 0xff; | |
2128 | rq->cmd[8] = nr & 0xff; | |
2129 | rq->cmd[9] = 0xf8; | |
2130 | ||
2131 | rq->cmd_len = 12; | |
4aff5e23 | 2132 | rq->cmd_type = REQ_TYPE_BLOCK_PC; |
1da177e4 LT |
2133 | rq->timeout = 60 * HZ; |
2134 | bio = rq->bio; | |
2135 | ||
994ca9a1 | 2136 | if (blk_execute_rq(q, cdi->disk, rq, 0)) { |
1da177e4 LT |
2137 | struct request_sense *s = rq->sense; |
2138 | ret = -EIO; | |
2139 | cdi->last_sense = s->sense_key; | |
2140 | } | |
2141 | ||
0e75f906 MC |
2142 | rq->bio = bio; |
2143 | if (blk_rq_unmap_user(rq)) | |
1da177e4 LT |
2144 | ret = -EFAULT; |
2145 | ||
2146 | if (ret) | |
2147 | break; | |
2148 | ||
2149 | nframes -= nr; | |
2150 | lba += nr; | |
2151 | ubuf += len; | |
2152 | } | |
2153 | ||
dd1cab95 | 2154 | blk_put_request(rq); |
1da177e4 LT |
2155 | return ret; |
2156 | } | |
2157 | ||
2158 | static int cdrom_read_cdda(struct cdrom_device_info *cdi, __u8 __user *ubuf, | |
2159 | int lba, int nframes) | |
2160 | { | |
2161 | int ret; | |
2162 | ||
2163 | if (cdi->cdda_method == CDDA_OLD) | |
2164 | return cdrom_read_cdda_old(cdi, ubuf, lba, nframes); | |
2165 | ||
2166 | retry: | |
2167 | /* | |
2168 | * for anything else than success and io error, we need to retry | |
2169 | */ | |
2170 | ret = cdrom_read_cdda_bpc(cdi, ubuf, lba, nframes); | |
2171 | if (!ret || ret != -EIO) | |
2172 | return ret; | |
2173 | ||
2174 | /* | |
2175 | * I've seen drives get sense 4/8/3 udma crc errors on multi | |
2176 | * frame dma, so drop to single frame dma if we need to | |
2177 | */ | |
2178 | if (cdi->cdda_method == CDDA_BPC_FULL && nframes > 1) { | |
2179 | printk("cdrom: dropping to single frame dma\n"); | |
2180 | cdi->cdda_method = CDDA_BPC_SINGLE; | |
2181 | goto retry; | |
2182 | } | |
2183 | ||
2184 | /* | |
2185 | * so we have an io error of some sort with multi frame dma. if the | |
2186 | * condition wasn't a hardware error | |
2187 | * problems, not for any error | |
2188 | */ | |
2189 | if (cdi->last_sense != 0x04 && cdi->last_sense != 0x0b) | |
2190 | return ret; | |
2191 | ||
2192 | printk("cdrom: dropping to old style cdda (sense=%x)\n", cdi->last_sense); | |
2193 | cdi->cdda_method = CDDA_OLD; | |
2194 | return cdrom_read_cdda_old(cdi, ubuf, lba, nframes); | |
2195 | } | |
2196 | ||
d2c5d4fc CH |
2197 | static int cdrom_ioctl_multisession(struct cdrom_device_info *cdi, |
2198 | void __user *argp) | |
1da177e4 | 2199 | { |
d2c5d4fc CH |
2200 | struct cdrom_multisession ms_info; |
2201 | u8 requested_format; | |
1da177e4 LT |
2202 | int ret; |
2203 | ||
d2c5d4fc CH |
2204 | cdinfo(CD_DO_IOCTL, "entering CDROMMULTISESSION\n"); |
2205 | ||
2206 | if (!(cdi->ops->capability & CDC_MULTI_SESSION)) | |
2207 | return -ENOSYS; | |
2208 | ||
2209 | if (copy_from_user(&ms_info, argp, sizeof(ms_info))) | |
2210 | return -EFAULT; | |
2211 | ||
2212 | requested_format = ms_info.addr_format; | |
2213 | if (requested_format != CDROM_MSF && requested_format != CDROM_LBA) | |
2214 | return -EINVAL; | |
2215 | ms_info.addr_format = CDROM_LBA; | |
2216 | ||
2217 | ret = cdi->ops->get_last_session(cdi, &ms_info); | |
2218 | if (ret) | |
1da177e4 LT |
2219 | return ret; |
2220 | ||
d2c5d4fc CH |
2221 | sanitize_format(&ms_info.addr, &ms_info.addr_format, requested_format); |
2222 | ||
2223 | if (copy_to_user(argp, &ms_info, sizeof(ms_info))) | |
2224 | return -EFAULT; | |
2225 | ||
2226 | cdinfo(CD_DO_IOCTL, "CDROMMULTISESSION successful\n"); | |
2227 | return 0; | |
2228 | } | |
2229 | ||
2230 | static int cdrom_ioctl_eject(struct cdrom_device_info *cdi) | |
2231 | { | |
2232 | cdinfo(CD_DO_IOCTL, "entering CDROMEJECT\n"); | |
2233 | ||
2234 | if (!CDROM_CAN(CDC_OPEN_TRAY)) | |
2235 | return -ENOSYS; | |
2236 | if (cdi->use_count != 1 || keeplocked) | |
2237 | return -EBUSY; | |
2238 | if (CDROM_CAN(CDC_LOCK)) { | |
2239 | int ret = cdi->ops->lock_door(cdi, 0); | |
2240 | if (ret) | |
1da177e4 | 2241 | return ret; |
d2c5d4fc | 2242 | } |
1da177e4 | 2243 | |
d2c5d4fc CH |
2244 | return cdi->ops->tray_move(cdi, 1); |
2245 | } | |
1da177e4 | 2246 | |
d2c5d4fc CH |
2247 | static int cdrom_ioctl_closetray(struct cdrom_device_info *cdi) |
2248 | { | |
2249 | cdinfo(CD_DO_IOCTL, "entering CDROMCLOSETRAY\n"); | |
1da177e4 | 2250 | |
d2c5d4fc CH |
2251 | if (!CDROM_CAN(CDC_CLOSE_TRAY)) |
2252 | return -ENOSYS; | |
2253 | return cdi->ops->tray_move(cdi, 0); | |
2254 | } | |
1da177e4 | 2255 | |
d2c5d4fc CH |
2256 | static int cdrom_ioctl_eject_sw(struct cdrom_device_info *cdi, |
2257 | unsigned long arg) | |
2258 | { | |
2259 | cdinfo(CD_DO_IOCTL, "entering CDROMEJECT_SW\n"); | |
1da177e4 | 2260 | |
d2c5d4fc CH |
2261 | if (!CDROM_CAN(CDC_OPEN_TRAY)) |
2262 | return -ENOSYS; | |
2263 | if (keeplocked) | |
2264 | return -EBUSY; | |
1da177e4 | 2265 | |
d2c5d4fc CH |
2266 | cdi->options &= ~(CDO_AUTO_CLOSE | CDO_AUTO_EJECT); |
2267 | if (arg) | |
2268 | cdi->options |= CDO_AUTO_CLOSE | CDO_AUTO_EJECT; | |
2269 | return 0; | |
2270 | } | |
1da177e4 | 2271 | |
d2c5d4fc CH |
2272 | static int cdrom_ioctl_media_changed(struct cdrom_device_info *cdi, |
2273 | unsigned long arg) | |
2274 | { | |
2275 | struct cdrom_changer_info *info; | |
2276 | int ret; | |
1da177e4 | 2277 | |
d2c5d4fc | 2278 | cdinfo(CD_DO_IOCTL, "entering CDROM_MEDIA_CHANGED\n"); |
1da177e4 | 2279 | |
d2c5d4fc CH |
2280 | if (!CDROM_CAN(CDC_MEDIA_CHANGED)) |
2281 | return -ENOSYS; | |
1da177e4 | 2282 | |
d2c5d4fc CH |
2283 | /* cannot select disc or select current disc */ |
2284 | if (!CDROM_CAN(CDC_SELECT_DISC) || arg == CDSL_CURRENT) | |
2285 | return media_changed(cdi, 1); | |
1da177e4 | 2286 | |
d2c5d4fc CH |
2287 | if ((unsigned int)arg >= cdi->capacity) |
2288 | return -EINVAL; | |
1da177e4 | 2289 | |
d2c5d4fc CH |
2290 | info = kmalloc(sizeof(*info), GFP_KERNEL); |
2291 | if (!info) | |
2292 | return -ENOMEM; | |
1da177e4 | 2293 | |
d2c5d4fc CH |
2294 | ret = cdrom_read_mech_status(cdi, info); |
2295 | if (!ret) | |
2296 | ret = info->slots[arg].change; | |
2297 | kfree(info); | |
2298 | return ret; | |
2299 | } | |
1da177e4 | 2300 | |
d2c5d4fc CH |
2301 | static int cdrom_ioctl_set_options(struct cdrom_device_info *cdi, |
2302 | unsigned long arg) | |
2303 | { | |
2304 | cdinfo(CD_DO_IOCTL, "entering CDROM_SET_OPTIONS\n"); | |
1da177e4 | 2305 | |
d2c5d4fc CH |
2306 | /* |
2307 | * Options need to be in sync with capability. | |
2308 | * Too late for that, so we have to check each one separately. | |
2309 | */ | |
2310 | switch (arg) { | |
2311 | case CDO_USE_FFLAGS: | |
2312 | case CDO_CHECK_TYPE: | |
2313 | break; | |
2314 | case CDO_LOCK: | |
2315 | if (!CDROM_CAN(CDC_LOCK)) | |
2316 | return -ENOSYS; | |
2317 | break; | |
2318 | case 0: | |
2319 | return cdi->options; | |
2320 | /* default is basically CDO_[AUTO_CLOSE|AUTO_EJECT] */ | |
2321 | default: | |
2322 | if (!CDROM_CAN(arg)) | |
1da177e4 | 2323 | return -ENOSYS; |
d2c5d4fc CH |
2324 | } |
2325 | cdi->options |= (int) arg; | |
2326 | return cdi->options; | |
2327 | } | |
1da177e4 | 2328 | |
d2c5d4fc CH |
2329 | static int cdrom_ioctl_clear_options(struct cdrom_device_info *cdi, |
2330 | unsigned long arg) | |
2331 | { | |
2332 | cdinfo(CD_DO_IOCTL, "entering CDROM_CLEAR_OPTIONS\n"); | |
1da177e4 | 2333 | |
d2c5d4fc CH |
2334 | cdi->options &= ~(int) arg; |
2335 | return cdi->options; | |
2336 | } | |
1da177e4 | 2337 | |
d2c5d4fc CH |
2338 | static int cdrom_ioctl_select_speed(struct cdrom_device_info *cdi, |
2339 | unsigned long arg) | |
2340 | { | |
2341 | cdinfo(CD_DO_IOCTL, "entering CDROM_SELECT_SPEED\n"); | |
1da177e4 | 2342 | |
d2c5d4fc CH |
2343 | if (!CDROM_CAN(CDC_SELECT_SPEED)) |
2344 | return -ENOSYS; | |
2345 | return cdi->ops->select_speed(cdi, arg); | |
2346 | } | |
1da177e4 | 2347 | |
d2c5d4fc CH |
2348 | static int cdrom_ioctl_select_disc(struct cdrom_device_info *cdi, |
2349 | unsigned long arg) | |
2350 | { | |
2351 | cdinfo(CD_DO_IOCTL, "entering CDROM_SELECT_DISC\n"); | |
2352 | ||
2353 | if (!CDROM_CAN(CDC_SELECT_DISC)) | |
2354 | return -ENOSYS; | |
2355 | ||
2356 | if (arg != CDSL_CURRENT && arg != CDSL_NONE) { | |
2357 | if ((int)arg >= cdi->capacity) | |
2358 | return -EINVAL; | |
2359 | } | |
2360 | ||
2361 | /* | |
2362 | * ->select_disc is a hook to allow a driver-specific way of | |
2363 | * seleting disc. However, since there is no equivalent hook for | |
2364 | * cdrom_slot_status this may not actually be useful... | |
2365 | */ | |
2366 | if (cdi->ops->select_disc) | |
2367 | return cdi->ops->select_disc(cdi, arg); | |
2368 | ||
2369 | cdinfo(CD_CHANGER, "Using generic cdrom_select_disc()\n"); | |
2370 | return cdrom_select_disc(cdi, arg); | |
2371 | } | |
2372 | ||
2373 | static int cdrom_ioctl_reset(struct cdrom_device_info *cdi, | |
2374 | struct block_device *bdev) | |
2375 | { | |
2376 | cdinfo(CD_DO_IOCTL, "entering CDROM_RESET\n"); | |
2377 | ||
2378 | if (!capable(CAP_SYS_ADMIN)) | |
2379 | return -EACCES; | |
2380 | if (!CDROM_CAN(CDC_RESET)) | |
2381 | return -ENOSYS; | |
2382 | invalidate_bdev(bdev, 0); | |
2383 | return cdi->ops->reset(cdi); | |
2384 | } | |
2385 | ||
2386 | static int cdrom_ioctl_lock_door(struct cdrom_device_info *cdi, | |
2387 | unsigned long arg) | |
2388 | { | |
2389 | cdinfo(CD_DO_IOCTL, "%socking door.\n", arg ? "L" : "Unl"); | |
2390 | ||
2391 | if (!CDROM_CAN(CDC_LOCK)) | |
2392 | return -EDRIVE_CANT_DO_THIS; | |
2393 | ||
2394 | keeplocked = arg ? 1 : 0; | |
2395 | ||
2396 | /* | |
2397 | * Don't unlock the door on multiple opens by default, but allow | |
2398 | * root to do so. | |
2399 | */ | |
2400 | if (cdi->use_count != 1 && !arg && !capable(CAP_SYS_ADMIN)) | |
2401 | return -EBUSY; | |
2402 | return cdi->ops->lock_door(cdi, arg); | |
2403 | } | |
2404 | ||
2405 | static int cdrom_ioctl_debug(struct cdrom_device_info *cdi, | |
2406 | unsigned long arg) | |
2407 | { | |
2408 | cdinfo(CD_DO_IOCTL, "%sabling debug.\n", arg ? "En" : "Dis"); | |
2409 | ||
2410 | if (!capable(CAP_SYS_ADMIN)) | |
2411 | return -EACCES; | |
2412 | debug = arg ? 1 : 0; | |
2413 | return debug; | |
2414 | } | |
1da177e4 | 2415 | |
d2c5d4fc CH |
2416 | static int cdrom_ioctl_get_capability(struct cdrom_device_info *cdi) |
2417 | { | |
2418 | cdinfo(CD_DO_IOCTL, "entering CDROM_GET_CAPABILITY\n"); | |
2419 | return (cdi->ops->capability & ~cdi->mask); | |
2420 | } | |
2421 | ||
2422 | /* | |
2423 | * The following function is implemented, although very few audio | |
1da177e4 LT |
2424 | * discs give Universal Product Code information, which should just be |
2425 | * the Medium Catalog Number on the box. Note, that the way the code | |
2426 | * is written on the CD is /not/ uniform across all discs! | |
2427 | */ | |
d2c5d4fc CH |
2428 | static int cdrom_ioctl_get_mcn(struct cdrom_device_info *cdi, |
2429 | void __user *argp) | |
2430 | { | |
2431 | struct cdrom_mcn mcn; | |
2432 | int ret; | |
1da177e4 | 2433 | |
d2c5d4fc | 2434 | cdinfo(CD_DO_IOCTL, "entering CDROM_GET_MCN\n"); |
1da177e4 | 2435 | |
d2c5d4fc CH |
2436 | if (!(cdi->ops->capability & CDC_MCN)) |
2437 | return -ENOSYS; | |
2438 | ret = cdi->ops->get_mcn(cdi, &mcn); | |
2439 | if (ret) | |
2440 | return ret; | |
1da177e4 | 2441 | |
d2c5d4fc CH |
2442 | if (copy_to_user(argp, &mcn, sizeof(mcn))) |
2443 | return -EFAULT; | |
2444 | cdinfo(CD_DO_IOCTL, "CDROM_GET_MCN successful\n"); | |
2445 | return 0; | |
2446 | } | |
1da177e4 | 2447 | |
d2c5d4fc CH |
2448 | static int cdrom_ioctl_drive_status(struct cdrom_device_info *cdi, |
2449 | unsigned long arg) | |
2450 | { | |
2451 | cdinfo(CD_DO_IOCTL, "entering CDROM_DRIVE_STATUS\n"); | |
2452 | ||
2453 | if (!(cdi->ops->capability & CDC_DRIVE_STATUS)) | |
2454 | return -ENOSYS; | |
2455 | if (!CDROM_CAN(CDC_SELECT_DISC) || | |
2456 | (arg == CDSL_CURRENT || arg == CDSL_NONE)) | |
2457 | return cdi->ops->drive_status(cdi, CDSL_CURRENT); | |
2458 | if (((int)arg >= cdi->capacity)) | |
2459 | return -EINVAL; | |
2460 | return cdrom_slot_status(cdi, arg); | |
2461 | } | |
2462 | ||
2463 | /* | |
2464 | * Ok, this is where problems start. The current interface for the | |
2465 | * CDROM_DISC_STATUS ioctl is flawed. It makes the false assumption that | |
2466 | * CDs are all CDS_DATA_1 or all CDS_AUDIO, etc. Unfortunatly, while this | |
2467 | * is often the case, it is also very common for CDs to have some tracks | |
2468 | * with data, and some tracks with audio. Just because I feel like it, | |
2469 | * I declare the following to be the best way to cope. If the CD has ANY | |
2470 | * data tracks on it, it will be returned as a data CD. If it has any XA | |
2471 | * tracks, I will return it as that. Now I could simplify this interface | |
2472 | * by combining these returns with the above, but this more clearly | |
2473 | * demonstrates the problem with the current interface. Too bad this | |
2474 | * wasn't designed to use bitmasks... -Erik | |
2475 | * | |
2476 | * Well, now we have the option CDS_MIXED: a mixed-type CD. | |
2477 | * User level programmers might feel the ioctl is not very useful. | |
2478 | * ---david | |
2479 | */ | |
2480 | static int cdrom_ioctl_disc_status(struct cdrom_device_info *cdi) | |
2481 | { | |
2482 | tracktype tracks; | |
2483 | ||
2484 | cdinfo(CD_DO_IOCTL, "entering CDROM_DISC_STATUS\n"); | |
2485 | ||
2486 | cdrom_count_tracks(cdi, &tracks); | |
2487 | if (tracks.error) | |
2488 | return tracks.error; | |
2489 | ||
2490 | /* Policy mode on */ | |
2491 | if (tracks.audio > 0) { | |
2492 | if (!tracks.data && !tracks.cdi && !tracks.xa) | |
2493 | return CDS_AUDIO; | |
2494 | else | |
2495 | return CDS_MIXED; | |
1da177e4 LT |
2496 | } |
2497 | ||
d2c5d4fc CH |
2498 | if (tracks.cdi > 0) |
2499 | return CDS_XA_2_2; | |
2500 | if (tracks.xa > 0) | |
2501 | return CDS_XA_2_1; | |
2502 | if (tracks.data > 0) | |
2503 | return CDS_DATA_1; | |
2504 | /* Policy mode off */ | |
2505 | ||
2506 | cdinfo(CD_WARNING,"This disc doesn't have any tracks I recognize!\n"); | |
2507 | return CDS_NO_INFO; | |
2508 | } | |
2509 | ||
2510 | static int cdrom_ioctl_changer_nslots(struct cdrom_device_info *cdi) | |
2511 | { | |
2512 | cdinfo(CD_DO_IOCTL, "entering CDROM_CHANGER_NSLOTS\n"); | |
2513 | return cdi->capacity; | |
2514 | } | |
2515 | ||
2516 | static int cdrom_ioctl_get_subchnl(struct cdrom_device_info *cdi, | |
2517 | void __user *argp) | |
2518 | { | |
2519 | struct cdrom_subchnl q; | |
2520 | u8 requested, back; | |
2521 | int ret; | |
2522 | ||
2523 | /* cdinfo(CD_DO_IOCTL,"entering CDROMSUBCHNL\n");*/ | |
2524 | ||
2525 | if (!CDROM_CAN(CDC_PLAY_AUDIO)) | |
2526 | return -ENOSYS; | |
2527 | if (copy_from_user(&q, argp, sizeof(q))) | |
2528 | return -EFAULT; | |
2529 | ||
2530 | requested = q.cdsc_format; | |
2531 | if (requested != CDROM_MSF && requested != CDROM_LBA) | |
2532 | return -EINVAL; | |
2533 | q.cdsc_format = CDROM_MSF; | |
2534 | ||
2535 | ret = cdi->ops->audio_ioctl(cdi, CDROMSUBCHNL, &q); | |
2536 | if (ret) | |
2537 | return ret; | |
2538 | ||
2539 | back = q.cdsc_format; /* local copy */ | |
2540 | sanitize_format(&q.cdsc_absaddr, &back, requested); | |
2541 | sanitize_format(&q.cdsc_reladdr, &q.cdsc_format, requested); | |
2542 | ||
2543 | if (copy_to_user(argp, &q, sizeof(q))) | |
2544 | return -EFAULT; | |
2545 | /* cdinfo(CD_DO_IOCTL, "CDROMSUBCHNL successful\n"); */ | |
2546 | return 0; | |
2547 | } | |
2548 | ||
2549 | static int cdrom_ioctl_read_tochdr(struct cdrom_device_info *cdi, | |
2550 | void __user *argp) | |
2551 | { | |
2552 | struct cdrom_tochdr header; | |
2553 | int ret; | |
2554 | ||
2555 | /* cdinfo(CD_DO_IOCTL, "entering CDROMREADTOCHDR\n"); */ | |
2556 | ||
2557 | if (!CDROM_CAN(CDC_PLAY_AUDIO)) | |
2558 | return -ENOSYS; | |
2559 | if (copy_from_user(&header, argp, sizeof(header))) | |
2560 | return -EFAULT; | |
2561 | ||
2562 | ret = cdi->ops->audio_ioctl(cdi, CDROMREADTOCHDR, &header); | |
2563 | if (ret) | |
2564 | return ret; | |
2565 | ||
2566 | if (copy_to_user(argp, &header, sizeof(header))) | |
2567 | return -EFAULT; | |
2568 | /* cdinfo(CD_DO_IOCTL, "CDROMREADTOCHDR successful\n"); */ | |
2569 | return 0; | |
2570 | } | |
2571 | ||
2572 | static int cdrom_ioctl_read_tocentry(struct cdrom_device_info *cdi, | |
2573 | void __user *argp) | |
2574 | { | |
2575 | struct cdrom_tocentry entry; | |
2576 | u8 requested_format; | |
2577 | int ret; | |
2578 | ||
2579 | /* cdinfo(CD_DO_IOCTL, "entering CDROMREADTOCENTRY\n"); */ | |
2580 | ||
2581 | if (!CDROM_CAN(CDC_PLAY_AUDIO)) | |
2582 | return -ENOSYS; | |
2583 | if (copy_from_user(&entry, argp, sizeof(entry))) | |
2584 | return -EFAULT; | |
2585 | ||
2586 | requested_format = entry.cdte_format; | |
2587 | if (requested_format != CDROM_MSF && requested_format != CDROM_LBA) | |
2588 | return -EINVAL; | |
2589 | /* make interface to low-level uniform */ | |
2590 | entry.cdte_format = CDROM_MSF; | |
2591 | ret = cdi->ops->audio_ioctl(cdi, CDROMREADTOCENTRY, &entry); | |
2592 | if (ret) | |
2593 | return ret; | |
2594 | sanitize_format(&entry.cdte_addr, &entry.cdte_format, requested_format); | |
2595 | ||
2596 | if (copy_to_user(argp, &entry, sizeof(entry))) | |
2597 | return -EFAULT; | |
2598 | /* cdinfo(CD_DO_IOCTL, "CDROMREADTOCENTRY successful\n"); */ | |
2599 | return 0; | |
2600 | } | |
2601 | ||
2602 | static int cdrom_ioctl_play_msf(struct cdrom_device_info *cdi, | |
2603 | void __user *argp) | |
2604 | { | |
2605 | struct cdrom_msf msf; | |
2606 | ||
2607 | cdinfo(CD_DO_IOCTL, "entering CDROMPLAYMSF\n"); | |
2608 | ||
2609 | if (!CDROM_CAN(CDC_PLAY_AUDIO)) | |
2610 | return -ENOSYS; | |
2611 | if (copy_from_user(&msf, argp, sizeof(msf))) | |
2612 | return -EFAULT; | |
2613 | return cdi->ops->audio_ioctl(cdi, CDROMPLAYMSF, &msf); | |
2614 | } | |
2615 | ||
2616 | static int cdrom_ioctl_play_trkind(struct cdrom_device_info *cdi, | |
2617 | void __user *argp) | |
2618 | { | |
2619 | struct cdrom_ti ti; | |
2620 | int ret; | |
2621 | ||
2622 | cdinfo(CD_DO_IOCTL, "entering CDROMPLAYTRKIND\n"); | |
2623 | ||
2624 | if (!CDROM_CAN(CDC_PLAY_AUDIO)) | |
2625 | return -ENOSYS; | |
2626 | if (copy_from_user(&ti, argp, sizeof(ti))) | |
2627 | return -EFAULT; | |
2628 | ||
2629 | ret = check_for_audio_disc(cdi, cdi->ops); | |
2630 | if (ret) | |
2631 | return ret; | |
2632 | return cdi->ops->audio_ioctl(cdi, CDROMPLAYTRKIND, &ti); | |
2633 | } | |
2634 | static int cdrom_ioctl_volctrl(struct cdrom_device_info *cdi, | |
2635 | void __user *argp) | |
2636 | { | |
2637 | struct cdrom_volctrl volume; | |
2638 | ||
2639 | cdinfo(CD_DO_IOCTL, "entering CDROMVOLCTRL\n"); | |
2640 | ||
2641 | if (!CDROM_CAN(CDC_PLAY_AUDIO)) | |
2642 | return -ENOSYS; | |
2643 | if (copy_from_user(&volume, argp, sizeof(volume))) | |
2644 | return -EFAULT; | |
2645 | return cdi->ops->audio_ioctl(cdi, CDROMVOLCTRL, &volume); | |
2646 | } | |
2647 | ||
2648 | static int cdrom_ioctl_volread(struct cdrom_device_info *cdi, | |
2649 | void __user *argp) | |
2650 | { | |
2651 | struct cdrom_volctrl volume; | |
2652 | int ret; | |
2653 | ||
2654 | cdinfo(CD_DO_IOCTL, "entering CDROMVOLREAD\n"); | |
2655 | ||
2656 | if (!CDROM_CAN(CDC_PLAY_AUDIO)) | |
2657 | return -ENOSYS; | |
2658 | ||
2659 | ret = cdi->ops->audio_ioctl(cdi, CDROMVOLREAD, &volume); | |
2660 | if (ret) | |
2661 | return ret; | |
2662 | ||
2663 | if (copy_to_user(argp, &volume, sizeof(volume))) | |
2664 | return -EFAULT; | |
2665 | return 0; | |
2666 | } | |
2667 | ||
2668 | static int cdrom_ioctl_audioctl(struct cdrom_device_info *cdi, | |
2669 | unsigned int cmd) | |
2670 | { | |
2671 | int ret; | |
2672 | ||
2673 | cdinfo(CD_DO_IOCTL, "doing audio ioctl (start/stop/pause/resume)\n"); | |
2674 | ||
2675 | if (!CDROM_CAN(CDC_PLAY_AUDIO)) | |
2676 | return -ENOSYS; | |
2677 | ret = check_for_audio_disc(cdi, cdi->ops); | |
2678 | if (ret) | |
2679 | return ret; | |
2680 | return cdi->ops->audio_ioctl(cdi, cmd, NULL); | |
2681 | } | |
2682 | ||
2683 | /* | |
2684 | * Just about every imaginable ioctl is supported in the Uniform layer | |
2685 | * these days. | |
2686 | * ATAPI / SCSI specific code now mainly resides in mmc_ioctl(). | |
2687 | */ | |
2688 | int cdrom_ioctl(struct file * file, struct cdrom_device_info *cdi, | |
2689 | struct inode *ip, unsigned int cmd, unsigned long arg) | |
2690 | { | |
2691 | void __user *argp = (void __user *)arg; | |
2692 | int ret; | |
2693 | ||
2694 | /* | |
2695 | * Try the generic SCSI command ioctl's first. | |
2696 | */ | |
2697 | ret = scsi_cmd_ioctl(file, ip->i_bdev->bd_disk, cmd, argp); | |
2698 | if (ret != -ENOTTY) | |
2699 | return ret; | |
2700 | ||
2701 | switch (cmd) { | |
2702 | case CDROMMULTISESSION: | |
2703 | return cdrom_ioctl_multisession(cdi, argp); | |
2704 | case CDROMEJECT: | |
2705 | return cdrom_ioctl_eject(cdi); | |
2706 | case CDROMCLOSETRAY: | |
2707 | return cdrom_ioctl_closetray(cdi); | |
2708 | case CDROMEJECT_SW: | |
2709 | return cdrom_ioctl_eject_sw(cdi, arg); | |
2710 | case CDROM_MEDIA_CHANGED: | |
2711 | return cdrom_ioctl_media_changed(cdi, arg); | |
2712 | case CDROM_SET_OPTIONS: | |
2713 | return cdrom_ioctl_set_options(cdi, arg); | |
2714 | case CDROM_CLEAR_OPTIONS: | |
2715 | return cdrom_ioctl_clear_options(cdi, arg); | |
2716 | case CDROM_SELECT_SPEED: | |
2717 | return cdrom_ioctl_select_speed(cdi, arg); | |
2718 | case CDROM_SELECT_DISC: | |
2719 | return cdrom_ioctl_select_disc(cdi, arg); | |
2720 | case CDROMRESET: | |
2721 | return cdrom_ioctl_reset(cdi, ip->i_bdev); | |
2722 | case CDROM_LOCKDOOR: | |
2723 | return cdrom_ioctl_lock_door(cdi, arg); | |
2724 | case CDROM_DEBUG: | |
2725 | return cdrom_ioctl_debug(cdi, arg); | |
2726 | case CDROM_GET_CAPABILITY: | |
2727 | return cdrom_ioctl_get_capability(cdi); | |
2728 | case CDROM_GET_MCN: | |
2729 | return cdrom_ioctl_get_mcn(cdi, argp); | |
2730 | case CDROM_DRIVE_STATUS: | |
2731 | return cdrom_ioctl_drive_status(cdi, arg); | |
2732 | case CDROM_DISC_STATUS: | |
2733 | return cdrom_ioctl_disc_status(cdi); | |
2734 | case CDROM_CHANGER_NSLOTS: | |
2735 | return cdrom_ioctl_changer_nslots(cdi); | |
2736 | } | |
2737 | ||
2738 | /* | |
2739 | * Use the ioctls that are implemented through the generic_packet() | |
2740 | * interface. this may look at bit funny, but if -ENOTTY is | |
2741 | * returned that particular ioctl is not implemented and we | |
2742 | * let it go through the device specific ones. | |
2743 | */ | |
1da177e4 LT |
2744 | if (CDROM_CAN(CDC_GENERIC_PACKET)) { |
2745 | ret = mmc_ioctl(cdi, cmd, arg); | |
d2c5d4fc | 2746 | if (ret != -ENOTTY) |
1da177e4 | 2747 | return ret; |
1da177e4 LT |
2748 | } |
2749 | ||
d2c5d4fc CH |
2750 | /* |
2751 | * Note: most of the cdinfo() calls are commented out here, | |
2752 | * because they fill up the sys log when CD players poll | |
2753 | * the drive. | |
2754 | */ | |
1da177e4 | 2755 | switch (cmd) { |
d2c5d4fc CH |
2756 | case CDROMSUBCHNL: |
2757 | return cdrom_ioctl_get_subchnl(cdi, argp); | |
2758 | case CDROMREADTOCHDR: | |
2759 | return cdrom_ioctl_read_tochdr(cdi, argp); | |
2760 | case CDROMREADTOCENTRY: | |
2761 | return cdrom_ioctl_read_tocentry(cdi, argp); | |
2762 | case CDROMPLAYMSF: | |
2763 | return cdrom_ioctl_play_msf(cdi, argp); | |
2764 | case CDROMPLAYTRKIND: | |
2765 | return cdrom_ioctl_play_trkind(cdi, argp); | |
2766 | case CDROMVOLCTRL: | |
2767 | return cdrom_ioctl_volctrl(cdi, argp); | |
2768 | case CDROMVOLREAD: | |
2769 | return cdrom_ioctl_volread(cdi, argp); | |
1da177e4 LT |
2770 | case CDROMSTART: |
2771 | case CDROMSTOP: | |
2772 | case CDROMPAUSE: | |
d2c5d4fc CH |
2773 | case CDROMRESUME: |
2774 | return cdrom_ioctl_audioctl(cdi, cmd); | |
2775 | } | |
1da177e4 | 2776 | |
1da177e4 LT |
2777 | return -ENOSYS; |
2778 | } | |
2779 | ||
2780 | static inline | |
2781 | int msf_to_lba(char m, char s, char f) | |
2782 | { | |
2783 | return (((m * CD_SECS) + s) * CD_FRAMES + f) - CD_MSF_OFFSET; | |
2784 | } | |
2785 | ||
2786 | /* | |
2787 | * Required when we need to use READ_10 to issue other than 2048 block | |
2788 | * reads | |
2789 | */ | |
2790 | static int cdrom_switch_blocksize(struct cdrom_device_info *cdi, int size) | |
2791 | { | |
2792 | struct cdrom_device_ops *cdo = cdi->ops; | |
2793 | struct packet_command cgc; | |
2794 | struct modesel_head mh; | |
2795 | ||
2796 | memset(&mh, 0, sizeof(mh)); | |
2797 | mh.block_desc_length = 0x08; | |
2798 | mh.block_length_med = (size >> 8) & 0xff; | |
2799 | mh.block_length_lo = size & 0xff; | |
2800 | ||
2801 | memset(&cgc, 0, sizeof(cgc)); | |
2802 | cgc.cmd[0] = 0x15; | |
2803 | cgc.cmd[1] = 1 << 4; | |
2804 | cgc.cmd[4] = 12; | |
2805 | cgc.buflen = sizeof(mh); | |
2806 | cgc.buffer = (char *) &mh; | |
2807 | cgc.data_direction = CGC_DATA_WRITE; | |
2808 | mh.block_desc_length = 0x08; | |
2809 | mh.block_length_med = (size >> 8) & 0xff; | |
2810 | mh.block_length_lo = size & 0xff; | |
2811 | ||
2812 | return cdo->generic_packet(cdi, &cgc); | |
2813 | } | |
2814 | ||
2815 | static int mmc_ioctl(struct cdrom_device_info *cdi, unsigned int cmd, | |
2816 | unsigned long arg) | |
2817 | { | |
2818 | struct cdrom_device_ops *cdo = cdi->ops; | |
2819 | struct packet_command cgc; | |
2820 | struct request_sense sense; | |
2821 | unsigned char buffer[32]; | |
2822 | int ret = 0; | |
2823 | ||
2824 | memset(&cgc, 0, sizeof(cgc)); | |
2825 | ||
2826 | /* build a unified command and queue it through | |
2827 | cdo->generic_packet() */ | |
2828 | switch (cmd) { | |
2829 | case CDROMREADRAW: | |
2830 | case CDROMREADMODE1: | |
2831 | case CDROMREADMODE2: { | |
2832 | struct cdrom_msf msf; | |
2833 | int blocksize = 0, format = 0, lba; | |
2834 | ||
2835 | switch (cmd) { | |
2836 | case CDROMREADRAW: | |
2837 | blocksize = CD_FRAMESIZE_RAW; | |
2838 | break; | |
2839 | case CDROMREADMODE1: | |
2840 | blocksize = CD_FRAMESIZE; | |
2841 | format = 2; | |
2842 | break; | |
2843 | case CDROMREADMODE2: | |
2844 | blocksize = CD_FRAMESIZE_RAW0; | |
2845 | break; | |
2846 | } | |
2847 | IOCTL_IN(arg, struct cdrom_msf, msf); | |
2848 | lba = msf_to_lba(msf.cdmsf_min0,msf.cdmsf_sec0,msf.cdmsf_frame0); | |
2849 | /* FIXME: we need upper bound checking, too!! */ | |
2850 | if (lba < 0) | |
2851 | return -EINVAL; | |
2852 | cgc.buffer = (char *) kmalloc(blocksize, GFP_KERNEL); | |
2853 | if (cgc.buffer == NULL) | |
2854 | return -ENOMEM; | |
2855 | memset(&sense, 0, sizeof(sense)); | |
2856 | cgc.sense = &sense; | |
2857 | cgc.data_direction = CGC_DATA_READ; | |
2858 | ret = cdrom_read_block(cdi, &cgc, lba, 1, format, blocksize); | |
2859 | if (ret && sense.sense_key==0x05 && sense.asc==0x20 && sense.ascq==0x00) { | |
2860 | /* | |
2861 | * SCSI-II devices are not required to support | |
2862 | * READ_CD, so let's try switching block size | |
2863 | */ | |
2864 | /* FIXME: switch back again... */ | |
2865 | if ((ret = cdrom_switch_blocksize(cdi, blocksize))) { | |
2866 | kfree(cgc.buffer); | |
2867 | return ret; | |
2868 | } | |
2869 | cgc.sense = NULL; | |
2870 | ret = cdrom_read_cd(cdi, &cgc, lba, blocksize, 1); | |
2871 | ret |= cdrom_switch_blocksize(cdi, blocksize); | |
2872 | } | |
2873 | if (!ret && copy_to_user((char __user *)arg, cgc.buffer, blocksize)) | |
2874 | ret = -EFAULT; | |
2875 | kfree(cgc.buffer); | |
2876 | return ret; | |
2877 | } | |
2878 | case CDROMREADAUDIO: { | |
2879 | struct cdrom_read_audio ra; | |
2880 | int lba; | |
2881 | ||
2882 | IOCTL_IN(arg, struct cdrom_read_audio, ra); | |
2883 | ||
2884 | if (ra.addr_format == CDROM_MSF) | |
2885 | lba = msf_to_lba(ra.addr.msf.minute, | |
2886 | ra.addr.msf.second, | |
2887 | ra.addr.msf.frame); | |
2888 | else if (ra.addr_format == CDROM_LBA) | |
2889 | lba = ra.addr.lba; | |
2890 | else | |
2891 | return -EINVAL; | |
2892 | ||
2893 | /* FIXME: we need upper bound checking, too!! */ | |
2894 | if (lba < 0 || ra.nframes <= 0 || ra.nframes > CD_FRAMES) | |
2895 | return -EINVAL; | |
2896 | ||
2897 | return cdrom_read_cdda(cdi, ra.buf, lba, ra.nframes); | |
2898 | } | |
2899 | case CDROMSUBCHNL: { | |
2900 | struct cdrom_subchnl q; | |
2901 | u_char requested, back; | |
2902 | IOCTL_IN(arg, struct cdrom_subchnl, q); | |
2903 | requested = q.cdsc_format; | |
2904 | if (!((requested == CDROM_MSF) || | |
2905 | (requested == CDROM_LBA))) | |
2906 | return -EINVAL; | |
2907 | q.cdsc_format = CDROM_MSF; | |
2908 | if ((ret = cdrom_read_subchannel(cdi, &q, 0))) | |
2909 | return ret; | |
2910 | back = q.cdsc_format; /* local copy */ | |
2911 | sanitize_format(&q.cdsc_absaddr, &back, requested); | |
2912 | sanitize_format(&q.cdsc_reladdr, &q.cdsc_format, requested); | |
2913 | IOCTL_OUT(arg, struct cdrom_subchnl, q); | |
2914 | /* cdinfo(CD_DO_IOCTL, "CDROMSUBCHNL successful\n"); */ | |
2915 | return 0; | |
2916 | } | |
2917 | case CDROMPLAYMSF: { | |
2918 | struct cdrom_msf msf; | |
2919 | cdinfo(CD_DO_IOCTL, "entering CDROMPLAYMSF\n"); | |
2920 | IOCTL_IN(arg, struct cdrom_msf, msf); | |
2921 | cgc.cmd[0] = GPCMD_PLAY_AUDIO_MSF; | |
2922 | cgc.cmd[3] = msf.cdmsf_min0; | |
2923 | cgc.cmd[4] = msf.cdmsf_sec0; | |
2924 | cgc.cmd[5] = msf.cdmsf_frame0; | |
2925 | cgc.cmd[6] = msf.cdmsf_min1; | |
2926 | cgc.cmd[7] = msf.cdmsf_sec1; | |
2927 | cgc.cmd[8] = msf.cdmsf_frame1; | |
2928 | cgc.data_direction = CGC_DATA_NONE; | |
2929 | return cdo->generic_packet(cdi, &cgc); | |
2930 | } | |
2931 | case CDROMPLAYBLK: { | |
2932 | struct cdrom_blk blk; | |
2933 | cdinfo(CD_DO_IOCTL, "entering CDROMPLAYBLK\n"); | |
2934 | IOCTL_IN(arg, struct cdrom_blk, blk); | |
2935 | cgc.cmd[0] = GPCMD_PLAY_AUDIO_10; | |
2936 | cgc.cmd[2] = (blk.from >> 24) & 0xff; | |
2937 | cgc.cmd[3] = (blk.from >> 16) & 0xff; | |
2938 | cgc.cmd[4] = (blk.from >> 8) & 0xff; | |
2939 | cgc.cmd[5] = blk.from & 0xff; | |
2940 | cgc.cmd[7] = (blk.len >> 8) & 0xff; | |
2941 | cgc.cmd[8] = blk.len & 0xff; | |
2942 | cgc.data_direction = CGC_DATA_NONE; | |
2943 | return cdo->generic_packet(cdi, &cgc); | |
2944 | } | |
2945 | case CDROMVOLCTRL: | |
2946 | case CDROMVOLREAD: { | |
2947 | struct cdrom_volctrl volctrl; | |
2948 | char mask[sizeof(buffer)]; | |
2949 | unsigned short offset; | |
2950 | ||
2951 | cdinfo(CD_DO_IOCTL, "entering CDROMVOLUME\n"); | |
2952 | ||
2953 | IOCTL_IN(arg, struct cdrom_volctrl, volctrl); | |
2954 | ||
2955 | cgc.buffer = buffer; | |
2956 | cgc.buflen = 24; | |
2957 | if ((ret = cdrom_mode_sense(cdi, &cgc, GPMODE_AUDIO_CTL_PAGE, 0))) | |
2958 | return ret; | |
2959 | ||
2960 | /* originally the code depended on buffer[1] to determine | |
2961 | how much data is available for transfer. buffer[1] is | |
2962 | unfortunately ambigious and the only reliable way seem | |
2963 | to be to simply skip over the block descriptor... */ | |
56052d52 | 2964 | offset = 8 + be16_to_cpu(*(__be16 *)(buffer+6)); |
1da177e4 LT |
2965 | |
2966 | if (offset + 16 > sizeof(buffer)) | |
2967 | return -E2BIG; | |
2968 | ||
2969 | if (offset + 16 > cgc.buflen) { | |
2970 | cgc.buflen = offset+16; | |
2971 | ret = cdrom_mode_sense(cdi, &cgc, | |
2972 | GPMODE_AUDIO_CTL_PAGE, 0); | |
2973 | if (ret) | |
2974 | return ret; | |
2975 | } | |
2976 | ||
2977 | /* sanity check */ | |
2978 | if ((buffer[offset] & 0x3f) != GPMODE_AUDIO_CTL_PAGE || | |
2979 | buffer[offset+1] < 14) | |
2980 | return -EINVAL; | |
2981 | ||
2982 | /* now we have the current volume settings. if it was only | |
2983 | a CDROMVOLREAD, return these values */ | |
2984 | if (cmd == CDROMVOLREAD) { | |
2985 | volctrl.channel0 = buffer[offset+9]; | |
2986 | volctrl.channel1 = buffer[offset+11]; | |
2987 | volctrl.channel2 = buffer[offset+13]; | |
2988 | volctrl.channel3 = buffer[offset+15]; | |
2989 | IOCTL_OUT(arg, struct cdrom_volctrl, volctrl); | |
2990 | return 0; | |
2991 | } | |
2992 | ||
2993 | /* get the volume mask */ | |
2994 | cgc.buffer = mask; | |
2995 | if ((ret = cdrom_mode_sense(cdi, &cgc, | |
2996 | GPMODE_AUDIO_CTL_PAGE, 1))) | |
2997 | return ret; | |
2998 | ||
2999 | buffer[offset+9] = volctrl.channel0 & mask[offset+9]; | |
3000 | buffer[offset+11] = volctrl.channel1 & mask[offset+11]; | |
3001 | buffer[offset+13] = volctrl.channel2 & mask[offset+13]; | |
3002 | buffer[offset+15] = volctrl.channel3 & mask[offset+15]; | |
3003 | ||
3004 | /* set volume */ | |
3005 | cgc.buffer = buffer + offset - 8; | |
3006 | memset(cgc.buffer, 0, 8); | |
3007 | return cdrom_mode_select(cdi, &cgc); | |
3008 | } | |
3009 | ||
3010 | case CDROMSTART: | |
3011 | case CDROMSTOP: { | |
3012 | cdinfo(CD_DO_IOCTL, "entering CDROMSTART/CDROMSTOP\n"); | |
3013 | cgc.cmd[0] = GPCMD_START_STOP_UNIT; | |
3014 | cgc.cmd[1] = 1; | |
3015 | cgc.cmd[4] = (cmd == CDROMSTART) ? 1 : 0; | |
3016 | cgc.data_direction = CGC_DATA_NONE; | |
3017 | return cdo->generic_packet(cdi, &cgc); | |
3018 | } | |
3019 | ||
3020 | case CDROMPAUSE: | |
3021 | case CDROMRESUME: { | |
3022 | cdinfo(CD_DO_IOCTL, "entering CDROMPAUSE/CDROMRESUME\n"); | |
3023 | cgc.cmd[0] = GPCMD_PAUSE_RESUME; | |
3024 | cgc.cmd[8] = (cmd == CDROMRESUME) ? 1 : 0; | |
3025 | cgc.data_direction = CGC_DATA_NONE; | |
3026 | return cdo->generic_packet(cdi, &cgc); | |
3027 | } | |
3028 | ||
3029 | case DVD_READ_STRUCT: { | |
3030 | dvd_struct *s; | |
3031 | int size = sizeof(dvd_struct); | |
3032 | if (!CDROM_CAN(CDC_DVD)) | |
3033 | return -ENOSYS; | |
3034 | if ((s = (dvd_struct *) kmalloc(size, GFP_KERNEL)) == NULL) | |
3035 | return -ENOMEM; | |
3036 | cdinfo(CD_DO_IOCTL, "entering DVD_READ_STRUCT\n"); | |
3037 | if (copy_from_user(s, (dvd_struct __user *)arg, size)) { | |
3038 | kfree(s); | |
3039 | return -EFAULT; | |
3040 | } | |
3041 | if ((ret = dvd_read_struct(cdi, s))) { | |
3042 | kfree(s); | |
3043 | return ret; | |
3044 | } | |
3045 | if (copy_to_user((dvd_struct __user *)arg, s, size)) | |
3046 | ret = -EFAULT; | |
3047 | kfree(s); | |
3048 | return ret; | |
3049 | } | |
3050 | ||
3051 | case DVD_AUTH: { | |
3052 | dvd_authinfo ai; | |
3053 | if (!CDROM_CAN(CDC_DVD)) | |
3054 | return -ENOSYS; | |
3055 | cdinfo(CD_DO_IOCTL, "entering DVD_AUTH\n"); | |
3056 | IOCTL_IN(arg, dvd_authinfo, ai); | |
3057 | if ((ret = dvd_do_auth (cdi, &ai))) | |
3058 | return ret; | |
3059 | IOCTL_OUT(arg, dvd_authinfo, ai); | |
3060 | return 0; | |
3061 | } | |
3062 | ||
3063 | case CDROM_NEXT_WRITABLE: { | |
3064 | long next = 0; | |
3065 | cdinfo(CD_DO_IOCTL, "entering CDROM_NEXT_WRITABLE\n"); | |
3066 | if ((ret = cdrom_get_next_writable(cdi, &next))) | |
3067 | return ret; | |
3068 | IOCTL_OUT(arg, long, next); | |
3069 | return 0; | |
3070 | } | |
3071 | case CDROM_LAST_WRITTEN: { | |
3072 | long last = 0; | |
3073 | cdinfo(CD_DO_IOCTL, "entering CDROM_LAST_WRITTEN\n"); | |
3074 | if ((ret = cdrom_get_last_written(cdi, &last))) | |
3075 | return ret; | |
3076 | IOCTL_OUT(arg, long, last); | |
3077 | return 0; | |
3078 | } | |
3079 | } /* switch */ | |
3080 | ||
3081 | return -ENOTTY; | |
3082 | } | |
3083 | ||
3084 | static int cdrom_get_track_info(struct cdrom_device_info *cdi, __u16 track, __u8 type, | |
3085 | track_information *ti) | |
3086 | { | |
3087 | struct cdrom_device_ops *cdo = cdi->ops; | |
3088 | struct packet_command cgc; | |
3089 | int ret, buflen; | |
3090 | ||
3091 | init_cdrom_command(&cgc, ti, 8, CGC_DATA_READ); | |
3092 | cgc.cmd[0] = GPCMD_READ_TRACK_RZONE_INFO; | |
3093 | cgc.cmd[1] = type & 3; | |
3094 | cgc.cmd[4] = (track & 0xff00) >> 8; | |
3095 | cgc.cmd[5] = track & 0xff; | |
3096 | cgc.cmd[8] = 8; | |
3097 | cgc.quiet = 1; | |
3098 | ||
3099 | if ((ret = cdo->generic_packet(cdi, &cgc))) | |
3100 | return ret; | |
3101 | ||
3102 | buflen = be16_to_cpu(ti->track_information_length) + | |
3103 | sizeof(ti->track_information_length); | |
3104 | ||
3105 | if (buflen > sizeof(track_information)) | |
3106 | buflen = sizeof(track_information); | |
3107 | ||
3108 | cgc.cmd[8] = cgc.buflen = buflen; | |
3109 | if ((ret = cdo->generic_packet(cdi, &cgc))) | |
3110 | return ret; | |
3111 | ||
3112 | /* return actual fill size */ | |
3113 | return buflen; | |
3114 | } | |
3115 | ||
3116 | /* requires CD R/RW */ | |
3117 | static int cdrom_get_disc_info(struct cdrom_device_info *cdi, disc_information *di) | |
3118 | { | |
3119 | struct cdrom_device_ops *cdo = cdi->ops; | |
3120 | struct packet_command cgc; | |
3121 | int ret, buflen; | |
3122 | ||
3123 | /* set up command and get the disc info */ | |
3124 | init_cdrom_command(&cgc, di, sizeof(*di), CGC_DATA_READ); | |
3125 | cgc.cmd[0] = GPCMD_READ_DISC_INFO; | |
3126 | cgc.cmd[8] = cgc.buflen = 2; | |
3127 | cgc.quiet = 1; | |
3128 | ||
3129 | if ((ret = cdo->generic_packet(cdi, &cgc))) | |
3130 | return ret; | |
3131 | ||
3132 | /* not all drives have the same disc_info length, so requeue | |
3133 | * packet with the length the drive tells us it can supply | |
3134 | */ | |
3135 | buflen = be16_to_cpu(di->disc_information_length) + | |
3136 | sizeof(di->disc_information_length); | |
3137 | ||
3138 | if (buflen > sizeof(disc_information)) | |
3139 | buflen = sizeof(disc_information); | |
3140 | ||
3141 | cgc.cmd[8] = cgc.buflen = buflen; | |
3142 | if ((ret = cdo->generic_packet(cdi, &cgc))) | |
3143 | return ret; | |
3144 | ||
3145 | /* return actual fill size */ | |
3146 | return buflen; | |
3147 | } | |
3148 | ||
3149 | /* return the last written block on the CD-R media. this is for the udf | |
3150 | file system. */ | |
3151 | int cdrom_get_last_written(struct cdrom_device_info *cdi, long *last_written) | |
3152 | { | |
3153 | struct cdrom_tocentry toc; | |
3154 | disc_information di; | |
3155 | track_information ti; | |
3156 | __u32 last_track; | |
3157 | int ret = -1, ti_size; | |
3158 | ||
3159 | if (!CDROM_CAN(CDC_GENERIC_PACKET)) | |
3160 | goto use_toc; | |
3161 | ||
3162 | ret = cdrom_get_disc_info(cdi, &di); | |
3163 | if (ret < (int)(offsetof(typeof(di), last_track_lsb) | |
3164 | + sizeof(di.last_track_lsb))) | |
3165 | goto use_toc; | |
3166 | ||
3167 | /* if unit didn't return msb, it's zeroed by cdrom_get_disc_info */ | |
3168 | last_track = (di.last_track_msb << 8) | di.last_track_lsb; | |
3169 | ti_size = cdrom_get_track_info(cdi, last_track, 1, &ti); | |
3170 | if (ti_size < (int)offsetof(typeof(ti), track_start)) | |
3171 | goto use_toc; | |
3172 | ||
3173 | /* if this track is blank, try the previous. */ | |
3174 | if (ti.blank) { | |
3175 | if (last_track==1) | |
3176 | goto use_toc; | |
3177 | last_track--; | |
3178 | ti_size = cdrom_get_track_info(cdi, last_track, 1, &ti); | |
3179 | } | |
3180 | ||
3181 | if (ti_size < (int)(offsetof(typeof(ti), track_size) | |
3182 | + sizeof(ti.track_size))) | |
3183 | goto use_toc; | |
3184 | ||
3185 | /* if last recorded field is valid, return it. */ | |
3186 | if (ti.lra_v && ti_size >= (int)(offsetof(typeof(ti), last_rec_address) | |
3187 | + sizeof(ti.last_rec_address))) { | |
3188 | *last_written = be32_to_cpu(ti.last_rec_address); | |
3189 | } else { | |
3190 | /* make it up instead */ | |
3191 | *last_written = be32_to_cpu(ti.track_start) + | |
3192 | be32_to_cpu(ti.track_size); | |
3193 | if (ti.free_blocks) | |
3194 | *last_written -= (be32_to_cpu(ti.free_blocks) + 7); | |
3195 | } | |
3196 | return 0; | |
3197 | ||
3198 | /* this is where we end up if the drive either can't do a | |
3199 | GPCMD_READ_DISC_INFO or GPCMD_READ_TRACK_RZONE_INFO or if | |
3200 | it doesn't give enough information or fails. then we return | |
3201 | the toc contents. */ | |
3202 | use_toc: | |
3203 | toc.cdte_format = CDROM_MSF; | |
3204 | toc.cdte_track = CDROM_LEADOUT; | |
3205 | if ((ret = cdi->ops->audio_ioctl(cdi, CDROMREADTOCENTRY, &toc))) | |
3206 | return ret; | |
3207 | sanitize_format(&toc.cdte_addr, &toc.cdte_format, CDROM_LBA); | |
3208 | *last_written = toc.cdte_addr.lba; | |
3209 | return 0; | |
3210 | } | |
3211 | ||
3212 | /* return the next writable block. also for udf file system. */ | |
3213 | static int cdrom_get_next_writable(struct cdrom_device_info *cdi, long *next_writable) | |
3214 | { | |
3215 | disc_information di; | |
3216 | track_information ti; | |
3217 | __u16 last_track; | |
3218 | int ret, ti_size; | |
3219 | ||
3220 | if (!CDROM_CAN(CDC_GENERIC_PACKET)) | |
3221 | goto use_last_written; | |
3222 | ||
3223 | ret = cdrom_get_disc_info(cdi, &di); | |
3224 | if (ret < 0 || ret < offsetof(typeof(di), last_track_lsb) | |
3225 | + sizeof(di.last_track_lsb)) | |
3226 | goto use_last_written; | |
3227 | ||
3228 | /* if unit didn't return msb, it's zeroed by cdrom_get_disc_info */ | |
3229 | last_track = (di.last_track_msb << 8) | di.last_track_lsb; | |
3230 | ti_size = cdrom_get_track_info(cdi, last_track, 1, &ti); | |
3231 | if (ti_size < 0 || ti_size < offsetof(typeof(ti), track_start)) | |
3232 | goto use_last_written; | |
3233 | ||
3234 | /* if this track is blank, try the previous. */ | |
3235 | if (ti.blank) { | |
3236 | if (last_track == 1) | |
3237 | goto use_last_written; | |
3238 | last_track--; | |
3239 | ti_size = cdrom_get_track_info(cdi, last_track, 1, &ti); | |
3240 | if (ti_size < 0) | |
3241 | goto use_last_written; | |
3242 | } | |
3243 | ||
3244 | /* if next recordable address field is valid, use it. */ | |
3245 | if (ti.nwa_v && ti_size >= offsetof(typeof(ti), next_writable) | |
3246 | + sizeof(ti.next_writable)) { | |
3247 | *next_writable = be32_to_cpu(ti.next_writable); | |
3248 | return 0; | |
3249 | } | |
3250 | ||
3251 | use_last_written: | |
3252 | if ((ret = cdrom_get_last_written(cdi, next_writable))) { | |
3253 | *next_writable = 0; | |
3254 | return ret; | |
3255 | } else { | |
3256 | *next_writable += 7; | |
3257 | return 0; | |
3258 | } | |
3259 | } | |
3260 | ||
3261 | EXPORT_SYMBOL(cdrom_get_last_written); | |
3262 | EXPORT_SYMBOL(register_cdrom); | |
3263 | EXPORT_SYMBOL(unregister_cdrom); | |
3264 | EXPORT_SYMBOL(cdrom_open); | |
3265 | EXPORT_SYMBOL(cdrom_release); | |
3266 | EXPORT_SYMBOL(cdrom_ioctl); | |
3267 | EXPORT_SYMBOL(cdrom_media_changed); | |
3268 | EXPORT_SYMBOL(cdrom_number_of_slots); | |
3269 | EXPORT_SYMBOL(cdrom_mode_select); | |
3270 | EXPORT_SYMBOL(cdrom_mode_sense); | |
3271 | EXPORT_SYMBOL(init_cdrom_command); | |
3272 | EXPORT_SYMBOL(cdrom_get_media_event); | |
3273 | ||
3274 | #ifdef CONFIG_SYSCTL | |
3275 | ||
3276 | #define CDROM_STR_SIZE 1000 | |
3277 | ||
3278 | static struct cdrom_sysctl_settings { | |
3279 | char info[CDROM_STR_SIZE]; /* general info */ | |
3280 | int autoclose; /* close tray upon mount, etc */ | |
3281 | int autoeject; /* eject on umount */ | |
3282 | int debug; /* turn on debugging messages */ | |
3283 | int lock; /* lock the door on device open */ | |
3284 | int check; /* check media type */ | |
3285 | } cdrom_sysctl_settings; | |
3286 | ||
3287 | static int cdrom_sysctl_info(ctl_table *ctl, int write, struct file * filp, | |
3288 | void __user *buffer, size_t *lenp, loff_t *ppos) | |
3289 | { | |
3290 | int pos; | |
3291 | struct cdrom_device_info *cdi; | |
3292 | char *info = cdrom_sysctl_settings.info; | |
3293 | ||
3294 | if (!*lenp || (*ppos && !write)) { | |
3295 | *lenp = 0; | |
3296 | return 0; | |
3297 | } | |
3298 | ||
3299 | pos = sprintf(info, "CD-ROM information, " VERSION "\n"); | |
3300 | ||
3301 | pos += sprintf(info+pos, "\ndrive name:\t"); | |
3302 | for (cdi=topCdromPtr;cdi!=NULL;cdi=cdi->next) | |
3303 | pos += sprintf(info+pos, "\t%s", cdi->name); | |
3304 | ||
3305 | pos += sprintf(info+pos, "\ndrive speed:\t"); | |
3306 | for (cdi=topCdromPtr;cdi!=NULL;cdi=cdi->next) | |
3307 | pos += sprintf(info+pos, "\t%d", cdi->speed); | |
3308 | ||
3309 | pos += sprintf(info+pos, "\ndrive # of slots:"); | |
3310 | for (cdi=topCdromPtr;cdi!=NULL;cdi=cdi->next) | |
3311 | pos += sprintf(info+pos, "\t%d", cdi->capacity); | |
3312 | ||
3313 | pos += sprintf(info+pos, "\nCan close tray:\t"); | |
3314 | for (cdi=topCdromPtr;cdi!=NULL;cdi=cdi->next) | |
3315 | pos += sprintf(info+pos, "\t%d", CDROM_CAN(CDC_CLOSE_TRAY) != 0); | |
3316 | ||
3317 | pos += sprintf(info+pos, "\nCan open tray:\t"); | |
3318 | for (cdi=topCdromPtr;cdi!=NULL;cdi=cdi->next) | |
3319 | pos += sprintf(info+pos, "\t%d", CDROM_CAN(CDC_OPEN_TRAY) != 0); | |
3320 | ||
3321 | pos += sprintf(info+pos, "\nCan lock tray:\t"); | |
3322 | for (cdi=topCdromPtr;cdi!=NULL;cdi=cdi->next) | |
3323 | pos += sprintf(info+pos, "\t%d", CDROM_CAN(CDC_LOCK) != 0); | |
3324 | ||
3325 | pos += sprintf(info+pos, "\nCan change speed:"); | |
3326 | for (cdi=topCdromPtr;cdi!=NULL;cdi=cdi->next) | |
3327 | pos += sprintf(info+pos, "\t%d", CDROM_CAN(CDC_SELECT_SPEED) != 0); | |
3328 | ||
3329 | pos += sprintf(info+pos, "\nCan select disk:"); | |
3330 | for (cdi=topCdromPtr;cdi!=NULL;cdi=cdi->next) | |
3331 | pos += sprintf(info+pos, "\t%d", CDROM_CAN(CDC_SELECT_DISC) != 0); | |
3332 | ||
3333 | pos += sprintf(info+pos, "\nCan read multisession:"); | |
3334 | for (cdi=topCdromPtr;cdi!=NULL;cdi=cdi->next) | |
3335 | pos += sprintf(info+pos, "\t%d", CDROM_CAN(CDC_MULTI_SESSION) != 0); | |
3336 | ||
3337 | pos += sprintf(info+pos, "\nCan read MCN:\t"); | |
3338 | for (cdi=topCdromPtr;cdi!=NULL;cdi=cdi->next) | |
3339 | pos += sprintf(info+pos, "\t%d", CDROM_CAN(CDC_MCN) != 0); | |
3340 | ||
3341 | pos += sprintf(info+pos, "\nReports media changed:"); | |
3342 | for (cdi=topCdromPtr;cdi!=NULL;cdi=cdi->next) | |
3343 | pos += sprintf(info+pos, "\t%d", CDROM_CAN(CDC_MEDIA_CHANGED) != 0); | |
3344 | ||
3345 | pos += sprintf(info+pos, "\nCan play audio:\t"); | |
3346 | for (cdi=topCdromPtr;cdi!=NULL;cdi=cdi->next) | |
3347 | pos += sprintf(info+pos, "\t%d", CDROM_CAN(CDC_PLAY_AUDIO) != 0); | |
3348 | ||
3349 | pos += sprintf(info+pos, "\nCan write CD-R:\t"); | |
3350 | for (cdi=topCdromPtr;cdi!=NULL;cdi=cdi->next) | |
3351 | pos += sprintf(info+pos, "\t%d", CDROM_CAN(CDC_CD_R) != 0); | |
3352 | ||
3353 | pos += sprintf(info+pos, "\nCan write CD-RW:"); | |
3354 | for (cdi=topCdromPtr;cdi!=NULL;cdi=cdi->next) | |
3355 | pos += sprintf(info+pos, "\t%d", CDROM_CAN(CDC_CD_RW) != 0); | |
3356 | ||
3357 | pos += sprintf(info+pos, "\nCan read DVD:\t"); | |
3358 | for (cdi=topCdromPtr;cdi!=NULL;cdi=cdi->next) | |
3359 | pos += sprintf(info+pos, "\t%d", CDROM_CAN(CDC_DVD) != 0); | |
3360 | ||
3361 | pos += sprintf(info+pos, "\nCan write DVD-R:"); | |
3362 | for (cdi=topCdromPtr;cdi!=NULL;cdi=cdi->next) | |
3363 | pos += sprintf(info+pos, "\t%d", CDROM_CAN(CDC_DVD_R) != 0); | |
3364 | ||
3365 | pos += sprintf(info+pos, "\nCan write DVD-RAM:"); | |
3366 | for (cdi=topCdromPtr;cdi!=NULL;cdi=cdi->next) | |
3367 | pos += sprintf(info+pos, "\t%d", CDROM_CAN(CDC_DVD_RAM) != 0); | |
3368 | ||
3369 | pos += sprintf(info+pos, "\nCan read MRW:\t"); | |
3370 | for (cdi=topCdromPtr;cdi!=NULL;cdi=cdi->next) | |
3371 | pos += sprintf(info+pos, "\t%d", CDROM_CAN(CDC_MRW) != 0); | |
3372 | ||
3373 | pos += sprintf(info+pos, "\nCan write MRW:\t"); | |
3374 | for (cdi=topCdromPtr;cdi!=NULL;cdi=cdi->next) | |
3375 | pos += sprintf(info+pos, "\t%d", CDROM_CAN(CDC_MRW_W) != 0); | |
3376 | ||
3377 | pos += sprintf(info+pos, "\nCan write RAM:\t"); | |
3378 | for (cdi=topCdromPtr;cdi!=NULL;cdi=cdi->next) | |
3379 | pos += sprintf(info+pos, "\t%d", CDROM_CAN(CDC_RAM) != 0); | |
3380 | ||
3381 | strcpy(info+pos,"\n\n"); | |
3382 | ||
3383 | return proc_dostring(ctl, write, filp, buffer, lenp, ppos); | |
3384 | } | |
3385 | ||
3386 | /* Unfortunately, per device settings are not implemented through | |
3387 | procfs/sysctl yet. When they are, this will naturally disappear. For now | |
3388 | just update all drives. Later this will become the template on which | |
3389 | new registered drives will be based. */ | |
3390 | static void cdrom_update_settings(void) | |
3391 | { | |
3392 | struct cdrom_device_info *cdi; | |
3393 | ||
3394 | for (cdi = topCdromPtr; cdi != NULL; cdi = cdi->next) { | |
3395 | if (autoclose && CDROM_CAN(CDC_CLOSE_TRAY)) | |
3396 | cdi->options |= CDO_AUTO_CLOSE; | |
3397 | else if (!autoclose) | |
3398 | cdi->options &= ~CDO_AUTO_CLOSE; | |
3399 | if (autoeject && CDROM_CAN(CDC_OPEN_TRAY)) | |
3400 | cdi->options |= CDO_AUTO_EJECT; | |
3401 | else if (!autoeject) | |
3402 | cdi->options &= ~CDO_AUTO_EJECT; | |
3403 | if (lockdoor && CDROM_CAN(CDC_LOCK)) | |
3404 | cdi->options |= CDO_LOCK; | |
3405 | else if (!lockdoor) | |
3406 | cdi->options &= ~CDO_LOCK; | |
3407 | if (check_media_type) | |
3408 | cdi->options |= CDO_CHECK_TYPE; | |
3409 | else | |
3410 | cdi->options &= ~CDO_CHECK_TYPE; | |
3411 | } | |
3412 | } | |
3413 | ||
3414 | static int cdrom_sysctl_handler(ctl_table *ctl, int write, struct file * filp, | |
3415 | void __user *buffer, size_t *lenp, loff_t *ppos) | |
3416 | { | |
3417 | int *valp = ctl->data; | |
3418 | int val = *valp; | |
3419 | int ret; | |
3420 | ||
3421 | ret = proc_dointvec(ctl, write, filp, buffer, lenp, ppos); | |
3422 | ||
3423 | if (write && *valp != val) { | |
3424 | ||
3425 | /* we only care for 1 or 0. */ | |
3426 | if (*valp) | |
3427 | *valp = 1; | |
3428 | else | |
3429 | *valp = 0; | |
3430 | ||
3431 | switch (ctl->ctl_name) { | |
3432 | case DEV_CDROM_AUTOCLOSE: { | |
3433 | if (valp == &cdrom_sysctl_settings.autoclose) | |
3434 | autoclose = cdrom_sysctl_settings.autoclose; | |
3435 | break; | |
3436 | } | |
3437 | case DEV_CDROM_AUTOEJECT: { | |
3438 | if (valp == &cdrom_sysctl_settings.autoeject) | |
3439 | autoeject = cdrom_sysctl_settings.autoeject; | |
3440 | break; | |
3441 | } | |
3442 | case DEV_CDROM_DEBUG: { | |
3443 | if (valp == &cdrom_sysctl_settings.debug) | |
3444 | debug = cdrom_sysctl_settings.debug; | |
3445 | break; | |
3446 | } | |
3447 | case DEV_CDROM_LOCK: { | |
3448 | if (valp == &cdrom_sysctl_settings.lock) | |
3449 | lockdoor = cdrom_sysctl_settings.lock; | |
3450 | break; | |
3451 | } | |
3452 | case DEV_CDROM_CHECK_MEDIA: { | |
3453 | if (valp == &cdrom_sysctl_settings.check) | |
3454 | check_media_type = cdrom_sysctl_settings.check; | |
3455 | break; | |
3456 | } | |
3457 | } | |
3458 | /* update the option flags according to the changes. we | |
3459 | don't have per device options through sysctl yet, | |
3460 | but we will have and then this will disappear. */ | |
3461 | cdrom_update_settings(); | |
3462 | } | |
3463 | ||
3464 | return ret; | |
3465 | } | |
3466 | ||
3467 | /* Place files in /proc/sys/dev/cdrom */ | |
3468 | static ctl_table cdrom_table[] = { | |
3469 | { | |
3470 | .ctl_name = DEV_CDROM_INFO, | |
3471 | .procname = "info", | |
3472 | .data = &cdrom_sysctl_settings.info, | |
3473 | .maxlen = CDROM_STR_SIZE, | |
3474 | .mode = 0444, | |
3475 | .proc_handler = &cdrom_sysctl_info, | |
3476 | }, | |
3477 | { | |
3478 | .ctl_name = DEV_CDROM_AUTOCLOSE, | |
3479 | .procname = "autoclose", | |
3480 | .data = &cdrom_sysctl_settings.autoclose, | |
3481 | .maxlen = sizeof(int), | |
3482 | .mode = 0644, | |
3483 | .proc_handler = &cdrom_sysctl_handler, | |
3484 | }, | |
3485 | { | |
3486 | .ctl_name = DEV_CDROM_AUTOEJECT, | |
3487 | .procname = "autoeject", | |
3488 | .data = &cdrom_sysctl_settings.autoeject, | |
3489 | .maxlen = sizeof(int), | |
3490 | .mode = 0644, | |
3491 | .proc_handler = &cdrom_sysctl_handler, | |
3492 | }, | |
3493 | { | |
3494 | .ctl_name = DEV_CDROM_DEBUG, | |
3495 | .procname = "debug", | |
3496 | .data = &cdrom_sysctl_settings.debug, | |
3497 | .maxlen = sizeof(int), | |
3498 | .mode = 0644, | |
3499 | .proc_handler = &cdrom_sysctl_handler, | |
3500 | }, | |
3501 | { | |
3502 | .ctl_name = DEV_CDROM_LOCK, | |
3503 | .procname = "lock", | |
3504 | .data = &cdrom_sysctl_settings.lock, | |
3505 | .maxlen = sizeof(int), | |
3506 | .mode = 0644, | |
3507 | .proc_handler = &cdrom_sysctl_handler, | |
3508 | }, | |
3509 | { | |
3510 | .ctl_name = DEV_CDROM_CHECK_MEDIA, | |
3511 | .procname = "check_media", | |
3512 | .data = &cdrom_sysctl_settings.check, | |
3513 | .maxlen = sizeof(int), | |
3514 | .mode = 0644, | |
3515 | .proc_handler = &cdrom_sysctl_handler | |
3516 | }, | |
3517 | { .ctl_name = 0 } | |
3518 | }; | |
3519 | ||
3520 | static ctl_table cdrom_cdrom_table[] = { | |
3521 | { | |
3522 | .ctl_name = DEV_CDROM, | |
3523 | .procname = "cdrom", | |
3524 | .maxlen = 0, | |
3525 | .mode = 0555, | |
3526 | .child = cdrom_table, | |
3527 | }, | |
3528 | { .ctl_name = 0 } | |
3529 | }; | |
3530 | ||
3531 | /* Make sure that /proc/sys/dev is there */ | |
3532 | static ctl_table cdrom_root_table[] = { | |
3533 | { | |
3534 | .ctl_name = CTL_DEV, | |
3535 | .procname = "dev", | |
3536 | .maxlen = 0, | |
3537 | .mode = 0555, | |
3538 | .child = cdrom_cdrom_table, | |
3539 | }, | |
3540 | { .ctl_name = 0 } | |
3541 | }; | |
3542 | static struct ctl_table_header *cdrom_sysctl_header; | |
3543 | ||
3544 | static void cdrom_sysctl_register(void) | |
3545 | { | |
3546 | static int initialized; | |
3547 | ||
3548 | if (initialized == 1) | |
3549 | return; | |
3550 | ||
3551 | cdrom_sysctl_header = register_sysctl_table(cdrom_root_table, 1); | |
3552 | if (cdrom_root_table->ctl_name && cdrom_root_table->child->de) | |
3553 | cdrom_root_table->child->de->owner = THIS_MODULE; | |
3554 | ||
3555 | /* set the defaults */ | |
3556 | cdrom_sysctl_settings.autoclose = autoclose; | |
3557 | cdrom_sysctl_settings.autoeject = autoeject; | |
3558 | cdrom_sysctl_settings.debug = debug; | |
3559 | cdrom_sysctl_settings.lock = lockdoor; | |
3560 | cdrom_sysctl_settings.check = check_media_type; | |
3561 | ||
3562 | initialized = 1; | |
3563 | } | |
3564 | ||
3565 | static void cdrom_sysctl_unregister(void) | |
3566 | { | |
3567 | if (cdrom_sysctl_header) | |
3568 | unregister_sysctl_table(cdrom_sysctl_header); | |
3569 | } | |
3570 | ||
3571 | #endif /* CONFIG_SYSCTL */ | |
3572 | ||
3573 | static int __init cdrom_init(void) | |
3574 | { | |
3575 | #ifdef CONFIG_SYSCTL | |
3576 | cdrom_sysctl_register(); | |
3577 | #endif | |
3578 | return 0; | |
3579 | } | |
3580 | ||
3581 | static void __exit cdrom_exit(void) | |
3582 | { | |
3583 | printk(KERN_INFO "Uniform CD-ROM driver unloaded\n"); | |
3584 | #ifdef CONFIG_SYSCTL | |
3585 | cdrom_sysctl_unregister(); | |
3586 | #endif | |
3587 | } | |
3588 | ||
3589 | module_init(cdrom_init); | |
3590 | module_exit(cdrom_exit); | |
3591 | MODULE_LICENSE("GPL"); |