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