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