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1da177e4 LT |
1 | /* |
2 | * linux/drivers/ide/ide-cd.c | |
3 | * | |
4 | * Copyright (C) 1994, 1995, 1996 scott snyder <snyder@fnald0.fnal.gov> | |
5 | * Copyright (C) 1996-1998 Erik Andersen <andersee@debian.org> | |
6 | * Copyright (C) 1998-2000 Jens Axboe <axboe@suse.de> | |
7 | * | |
8 | * May be copied or modified under the terms of the GNU General Public | |
9 | * License. See linux/COPYING for more information. | |
10 | * | |
11 | * ATAPI CD-ROM driver. To be used with ide.c. | |
12 | * See Documentation/cdrom/ide-cd for usage information. | |
13 | * | |
14 | * Suggestions are welcome. Patches that work are more welcome though. ;-) | |
15 | * For those wishing to work on this driver, please be sure you download | |
16 | * and comply with the latest Mt. Fuji (SFF8090 version 4) and ATAPI | |
17 | * (SFF-8020i rev 2.6) standards. These documents can be obtained by | |
18 | * anonymous ftp from: | |
19 | * ftp://fission.dt.wdc.com/pub/standards/SFF_atapi/spec/SFF8020-r2.6/PS/8020r26.ps | |
20 | * ftp://ftp.avc-pioneer.com/Mtfuji4/Spec/Fuji4r10.pdf | |
21 | * | |
22 | * Drives that deviate from these standards will be accommodated as much | |
23 | * as possible via compile time or command-line options. Since I only have | |
24 | * a few drives, you generally need to send me patches... | |
25 | * | |
26 | * ---------------------------------- | |
27 | * TO DO LIST: | |
28 | * -Make it so that Pioneer CD DR-A24X and friends don't get screwed up on | |
29 | * boot | |
30 | * | |
31 | * ---------------------------------- | |
32 | * 1.00 Oct 31, 1994 -- Initial version. | |
33 | * 1.01 Nov 2, 1994 -- Fixed problem with starting request in | |
34 | * cdrom_check_status. | |
35 | * 1.03 Nov 25, 1994 -- leaving unmask_intr[] as a user-setting (as for disks) | |
36 | * (from mlord) -- minor changes to cdrom_setup() | |
37 | * -- renamed ide_dev_s to ide_drive_t, enable irq on command | |
38 | * 2.00 Nov 27, 1994 -- Generalize packet command interface; | |
39 | * add audio ioctls. | |
40 | * 2.01 Dec 3, 1994 -- Rework packet command interface to handle devices | |
41 | * which send an interrupt when ready for a command. | |
42 | * 2.02 Dec 11, 1994 -- Cache the TOC in the driver. | |
43 | * Don't use SCMD_PLAYAUDIO_TI; it's not included | |
44 | * in the current version of ATAPI. | |
45 | * Try to use LBA instead of track or MSF addressing | |
46 | * when possible. | |
47 | * Don't wait for READY_STAT. | |
48 | * 2.03 Jan 10, 1995 -- Rewrite block read routines to handle block sizes | |
49 | * other than 2k and to move multiple sectors in a | |
50 | * single transaction. | |
51 | * 2.04 Apr 21, 1995 -- Add work-around for Creative Labs CD220E drives. | |
52 | * Thanks to Nick Saw <cwsaw@pts7.pts.mot.com> for | |
53 | * help in figuring this out. Ditto for Acer and | |
54 | * Aztech drives, which seem to have the same problem. | |
55 | * 2.04b May 30, 1995 -- Fix to match changes in ide.c version 3.16 -ml | |
56 | * 2.05 Jun 8, 1995 -- Don't attempt to retry after an illegal request | |
57 | * or data protect error. | |
58 | * Use HWIF and DEV_HWIF macros as in ide.c. | |
59 | * Always try to do a request_sense after | |
60 | * a failed command. | |
61 | * Include an option to give textual descriptions | |
62 | * of ATAPI errors. | |
63 | * Fix a bug in handling the sector cache which | |
64 | * showed up if the drive returned data in 512 byte | |
65 | * blocks (like Pioneer drives). Thanks to | |
66 | * Richard Hirst <srh@gpt.co.uk> for diagnosing this. | |
67 | * Properly supply the page number field in the | |
68 | * MODE_SELECT command. | |
69 | * PLAYAUDIO12 is broken on the Aztech; work around it. | |
70 | * 2.05x Aug 11, 1995 -- lots of data structure renaming/restructuring in ide.c | |
71 | * (my apologies to Scott, but now ide-cd.c is independent) | |
72 | * 3.00 Aug 22, 1995 -- Implement CDROMMULTISESSION ioctl. | |
73 | * Implement CDROMREADAUDIO ioctl (UNTESTED). | |
74 | * Use input_ide_data() and output_ide_data(). | |
75 | * Add door locking. | |
76 | * Fix usage count leak in cdrom_open, which happened | |
77 | * when a read-write mount was attempted. | |
78 | * Try to load the disk on open. | |
79 | * Implement CDROMEJECT_SW ioctl (off by default). | |
80 | * Read total cdrom capacity during open. | |
81 | * Rearrange logic in cdrom_decode_status. Issue | |
82 | * request sense commands for failed packet commands | |
83 | * from here instead of from cdrom_queue_packet_command. | |
84 | * Fix a race condition in retrieving error information. | |
85 | * Suppress printing normal unit attention errors and | |
86 | * some drive not ready errors. | |
87 | * Implement CDROMVOLREAD ioctl. | |
88 | * Implement CDROMREADMODE1/2 ioctls. | |
89 | * Fix race condition in setting up interrupt handlers | |
90 | * when the `serialize' option is used. | |
91 | * 3.01 Sep 2, 1995 -- Fix ordering of reenabling interrupts in | |
92 | * cdrom_queue_request. | |
93 | * Another try at using ide_[input,output]_data. | |
94 | * 3.02 Sep 16, 1995 -- Stick total disk capacity in partition table as well. | |
95 | * Make VERBOSE_IDE_CD_ERRORS dump failed command again. | |
96 | * Dump out more information for ILLEGAL REQUEST errs. | |
97 | * Fix handling of errors occurring before the | |
98 | * packet command is transferred. | |
99 | * Fix transfers with odd bytelengths. | |
100 | * 3.03 Oct 27, 1995 -- Some Creative drives have an id of just `CD'. | |
101 | * `DCI-2S10' drives are broken too. | |
102 | * 3.04 Nov 20, 1995 -- So are Vertos drives. | |
103 | * 3.05 Dec 1, 1995 -- Changes to go with overhaul of ide.c and ide-tape.c | |
104 | * 3.06 Dec 16, 1995 -- Add support needed for partitions. | |
105 | * More workarounds for Vertos bugs (based on patches | |
106 | * from Holger Dietze <dietze@aix520.informatik.uni-leipzig.de>). | |
107 | * Try to eliminate byteorder assumptions. | |
108 | * Use atapi_cdrom_subchnl struct definition. | |
109 | * Add STANDARD_ATAPI compilation option. | |
110 | * 3.07 Jan 29, 1996 -- More twiddling for broken drives: Sony 55D, | |
111 | * Vertos 300. | |
112 | * Add NO_DOOR_LOCKING configuration option. | |
113 | * Handle drive_cmd requests w/NULL args (for hdparm -t). | |
114 | * Work around sporadic Sony55e audio play problem. | |
115 | * 3.07a Feb 11, 1996 -- check drive->id for NULL before dereferencing, to fix | |
116 | * problem with "hde=cdrom" with no drive present. -ml | |
117 | * 3.08 Mar 6, 1996 -- More Vertos workarounds. | |
118 | * 3.09 Apr 5, 1996 -- Add CDROMCLOSETRAY ioctl. | |
119 | * Switch to using MSF addressing for audio commands. | |
120 | * Reformat to match kernel tabbing style. | |
121 | * Add CDROM_GET_UPC ioctl. | |
122 | * 3.10 Apr 10, 1996 -- Fix compilation error with STANDARD_ATAPI. | |
96de0e25 | 123 | * 3.11 Apr 29, 1996 -- Patch from Heiko Eißfeldt <heiko@colossus.escape.de> |
1da177e4 LT |
124 | * to remove redundant verify_area calls. |
125 | * 3.12 May 7, 1996 -- Rudimentary changer support. Based on patches | |
126 | * from Gerhard Zuber <zuber@berlin.snafu.de>. | |
127 | * Let open succeed even if there's no loaded disc. | |
128 | * 3.13 May 19, 1996 -- Fixes for changer code. | |
129 | * 3.14 May 29, 1996 -- Add work-around for Vertos 600. | |
130 | * (From Hennus Bergman <hennus@sky.ow.nl>.) | |
131 | * 3.15 July 2, 1996 -- Added support for Sanyo 3 CD changers | |
132 | * from Ben Galliart <bgallia@luc.edu> with | |
133 | * special help from Jeff Lightfoot | |
134 | * <jeffml@pobox.com> | |
135 | * 3.15a July 9, 1996 -- Improved Sanyo 3 CD changer identification | |
136 | * 3.16 Jul 28, 1996 -- Fix from Gadi to reduce kernel stack usage for ioctl. | |
137 | * 3.17 Sep 17, 1996 -- Tweak audio reads for some drives. | |
138 | * Start changing CDROMLOADFROMSLOT to CDROM_SELECT_DISC. | |
139 | * 3.18 Oct 31, 1996 -- Added module and DMA support. | |
140 | * | |
141 | * | |
142 | * 4.00 Nov 5, 1996 -- New ide-cd maintainer, | |
143 | * Erik B. Andersen <andersee@debian.org> | |
144 | * -- Newer Creative drives don't always set the error | |
145 | * register correctly. Make sure we see media changes | |
146 | * regardless. | |
147 | * -- Integrate with generic cdrom driver. | |
148 | * -- CDROMGETSPINDOWN and CDROMSETSPINDOWN ioctls, based on | |
149 | * a patch from Ciro Cattuto <>. | |
150 | * -- Call set_device_ro. | |
151 | * -- Implement CDROMMECHANISMSTATUS and CDROMSLOTTABLE | |
152 | * ioctls, based on patch by Erik Andersen | |
153 | * -- Add some probes of drive capability during setup. | |
154 | * | |
155 | * 4.01 Nov 11, 1996 -- Split into ide-cd.c and ide-cd.h | |
156 | * -- Removed CDROMMECHANISMSTATUS and CDROMSLOTTABLE | |
157 | * ioctls in favor of a generalized approach | |
158 | * using the generic cdrom driver. | |
159 | * -- Fully integrated with the 2.1.X kernel. | |
160 | * -- Other stuff that I forgot (lots of changes) | |
161 | * | |
162 | * 4.02 Dec 01, 1996 -- Applied patch from Gadi Oxman <gadio@netvision.net.il> | |
163 | * to fix the drive door locking problems. | |
164 | * | |
165 | * 4.03 Dec 04, 1996 -- Added DSC overlap support. | |
166 | * 4.04 Dec 29, 1996 -- Added CDROMREADRAW ioclt based on patch | |
167 | * by Ales Makarov (xmakarov@sun.felk.cvut.cz) | |
168 | * | |
169 | * 4.05 Nov 20, 1997 -- Modified to print more drive info on init | |
170 | * Minor other changes | |
171 | * Fix errors on CDROMSTOP (If you have a "Dolphin", | |
172 | * you must define IHAVEADOLPHIN) | |
173 | * Added identifier so new Sanyo CD-changer works | |
174 | * Better detection if door locking isn't supported | |
175 | * | |
176 | * 4.06 Dec 17, 1997 -- fixed endless "tray open" messages -ml | |
177 | * 4.07 Dec 17, 1997 -- fallback to set pc->stat on "tray open" | |
178 | * 4.08 Dec 18, 1997 -- spew less noise when tray is empty | |
179 | * -- fix speed display for ACER 24X, 18X | |
180 | * 4.09 Jan 04, 1998 -- fix handling of the last block so we return | |
181 | * an end of file instead of an I/O error (Gadi) | |
182 | * 4.10 Jan 24, 1998 -- fixed a bug so now changers can change to a new | |
183 | * slot when there is no disc in the current slot. | |
184 | * -- Fixed a memory leak where info->changer_info was | |
185 | * malloc'ed but never free'd when closing the device. | |
186 | * -- Cleaned up the global namespace a bit by making more | |
187 | * functions static that should already have been. | |
188 | * 4.11 Mar 12, 1998 -- Added support for the CDROM_SELECT_SPEED ioctl | |
189 | * based on a patch for 2.0.33 by Jelle Foks | |
190 | * <jelle@scintilla.utwente.nl>, a patch for 2.0.33 | |
191 | * by Toni Giorgino <toni@pcape2.pi.infn.it>, the SCSI | |
192 | * version, and my own efforts. -erik | |
193 | * -- Fixed a stupid bug which egcs was kind enough to | |
194 | * inform me of where "Illegal mode for this track" | |
195 | * was never returned due to a comparison on data | |
196 | * types of limited range. | |
197 | * 4.12 Mar 29, 1998 -- Fixed bug in CDROM_SELECT_SPEED so write speed is | |
198 | * now set ionly for CD-R and CD-RW drives. I had | |
199 | * removed this support because it produced errors. | |
200 | * It produced errors _only_ for non-writers. duh. | |
201 | * 4.13 May 05, 1998 -- Suppress useless "in progress of becoming ready" | |
202 | * messages, since this is not an error. | |
203 | * -- Change error messages to be const | |
204 | * -- Remove a "\t" which looks ugly in the syslogs | |
205 | * 4.14 July 17, 1998 -- Change to pointing to .ps version of ATAPI spec | |
206 | * since the .pdf version doesn't seem to work... | |
207 | * -- Updated the TODO list to something more current. | |
208 | * | |
209 | * 4.15 Aug 25, 1998 -- Updated ide-cd.h to respect mechine endianess, | |
210 | * patch thanks to "Eddie C. Dost" <ecd@skynet.be> | |
211 | * | |
212 | * 4.50 Oct 19, 1998 -- New maintainers! | |
213 | * Jens Axboe <axboe@image.dk> | |
214 | * Chris Zwilling <chris@cloudnet.com> | |
215 | * | |
216 | * 4.51 Dec 23, 1998 -- Jens Axboe <axboe@image.dk> | |
217 | * - ide_cdrom_reset enabled since the ide subsystem | |
218 | * handles resets fine now. <axboe@image.dk> | |
219 | * - Transfer size fix for Samsung CD-ROMs, thanks to | |
220 | * "Ville Hallik" <ville.hallik@mail.ee>. | |
221 | * - other minor stuff. | |
222 | * | |
223 | * 4.52 Jan 19, 1999 -- Jens Axboe <axboe@image.dk> | |
224 | * - Detect DVD-ROM/RAM drives | |
225 | * | |
226 | * 4.53 Feb 22, 1999 - Include other model Samsung and one Goldstar | |
227 | * drive in transfer size limit. | |
228 | * - Fix the I/O error when doing eject without a medium | |
229 | * loaded on some drives. | |
230 | * - CDROMREADMODE2 is now implemented through | |
231 | * CDROMREADRAW, since many drives don't support | |
232 | * MODE2 (even though ATAPI 2.6 says they must). | |
233 | * - Added ignore parameter to ide-cd (as a module), eg | |
234 | * insmod ide-cd ignore='hda hdb' | |
235 | * Useful when using ide-cd in conjunction with | |
236 | * ide-scsi. TODO: non-modular way of doing the | |
237 | * same. | |
238 | * | |
239 | * 4.54 Aug 5, 1999 - Support for MMC2 class commands through the generic | |
240 | * packet interface to cdrom.c. | |
241 | * - Unified audio ioctl support, most of it. | |
242 | * - cleaned up various deprecated verify_area(). | |
243 | * - Added ide_cdrom_packet() as the interface for | |
244 | * the Uniform generic_packet(). | |
245 | * - bunch of other stuff, will fill in logs later. | |
246 | * - report 1 slot for non-changers, like the other | |
247 | * cd-rom drivers. don't report select disc for | |
248 | * non-changers as well. | |
249 | * - mask out audio playing, if the device can't do it. | |
250 | * | |
251 | * 4.55 Sep 1, 1999 - Eliminated the rest of the audio ioctls, except | |
252 | * for CDROMREADTOC[ENTRY|HEADER]. Some of the drivers | |
253 | * use this independently of the actual audio handling. | |
254 | * They will disappear later when I get the time to | |
255 | * do it cleanly. | |
256 | * - Minimize the TOC reading - only do it when we | |
257 | * know a media change has occurred. | |
258 | * - Moved all the CDROMREADx ioctls to the Uniform layer. | |
96de0e25 | 259 | * - Heiko Eißfeldt <heiko@colossus.escape.de> supplied |
1da177e4 LT |
260 | * some fixes for CDI. |
261 | * - CD-ROM leaving door locked fix from Andries | |
262 | * Brouwer <Andries.Brouwer@cwi.nl> | |
263 | * - Erik Andersen <andersen@xmission.com> unified | |
264 | * commands across the various drivers and how | |
265 | * sense errors are handled. | |
266 | * | |
267 | * 4.56 Sep 12, 1999 - Removed changer support - it is now in the | |
268 | * Uniform layer. | |
269 | * - Added partition based multisession handling. | |
270 | * - Mode sense and mode select moved to the | |
271 | * Uniform layer. | |
272 | * - Fixed a problem with WPI CDS-32X drive - it | |
273 | * failed the capabilities | |
274 | * | |
275 | * 4.57 Apr 7, 2000 - Fixed sense reporting. | |
276 | * - Fixed possible oops in ide_cdrom_get_last_session() | |
277 | * - Fix locking mania and make ide_cdrom_reset relock | |
278 | * - Stop spewing errors to log when magicdev polls with | |
279 | * TEST_UNIT_READY on some drives. | |
280 | * - Various fixes from Tobias Ringstrom: | |
281 | * tray if it was locked prior to the reset. | |
282 | * - cdrom_read_capacity returns one frame too little. | |
283 | * - Fix real capacity reporting. | |
284 | * | |
285 | * 4.58 May 1, 2000 - Clean up ACER50 stuff. | |
286 | * - Fix small problem with ide_cdrom_capacity | |
287 | * | |
288 | * 4.59 Aug 11, 2000 - Fix changer problem in cdrom_read_toc, we weren't | |
289 | * correctly sensing a disc change. | |
290 | * - Rearranged some code | |
291 | * - Use extended sense on drives that support it for | |
292 | * correctly reporting tray status -- from | |
293 | * Michael D Johnson <johnsom@orst.edu> | |
294 | * 4.60 Dec 17, 2003 - Add mt rainier support | |
295 | * - Bump timeout for packet commands, matches sr | |
296 | * - Odd stuff | |
297 | * 4.61 Jan 22, 2004 - support hardware sector sizes other than 2kB, | |
298 | * Pascal Schmidt <der.eremit@email.de> | |
299 | * | |
300 | *************************************************************************/ | |
301 | ||
302 | #define IDECD_VERSION "4.61" | |
303 | ||
1da177e4 LT |
304 | #include <linux/module.h> |
305 | #include <linux/types.h> | |
306 | #include <linux/kernel.h> | |
307 | #include <linux/delay.h> | |
308 | #include <linux/timer.h> | |
309 | #include <linux/slab.h> | |
310 | #include <linux/interrupt.h> | |
311 | #include <linux/errno.h> | |
312 | #include <linux/cdrom.h> | |
313 | #include <linux/ide.h> | |
314 | #include <linux/completion.h> | |
cf8b8975 | 315 | #include <linux/mutex.h> |
1da177e4 LT |
316 | |
317 | #include <scsi/scsi.h> /* For SCSI -> ATAPI command conversion */ | |
318 | ||
319 | #include <asm/irq.h> | |
320 | #include <asm/io.h> | |
321 | #include <asm/byteorder.h> | |
322 | #include <asm/uaccess.h> | |
323 | #include <asm/unaligned.h> | |
324 | ||
325 | #include "ide-cd.h" | |
326 | ||
cf8b8975 | 327 | static DEFINE_MUTEX(idecd_ref_mutex); |
1da177e4 LT |
328 | |
329 | #define to_ide_cd(obj) container_of(obj, struct cdrom_info, kref) | |
330 | ||
331 | #define ide_cd_g(disk) \ | |
332 | container_of((disk)->private_data, struct cdrom_info, driver) | |
333 | ||
334 | static struct cdrom_info *ide_cd_get(struct gendisk *disk) | |
335 | { | |
336 | struct cdrom_info *cd = NULL; | |
337 | ||
cf8b8975 | 338 | mutex_lock(&idecd_ref_mutex); |
1da177e4 LT |
339 | cd = ide_cd_g(disk); |
340 | if (cd) | |
341 | kref_get(&cd->kref); | |
cf8b8975 | 342 | mutex_unlock(&idecd_ref_mutex); |
1da177e4 LT |
343 | return cd; |
344 | } | |
345 | ||
346 | static void ide_cd_release(struct kref *); | |
347 | ||
348 | static void ide_cd_put(struct cdrom_info *cd) | |
349 | { | |
cf8b8975 | 350 | mutex_lock(&idecd_ref_mutex); |
1da177e4 | 351 | kref_put(&cd->kref, ide_cd_release); |
cf8b8975 | 352 | mutex_unlock(&idecd_ref_mutex); |
1da177e4 LT |
353 | } |
354 | ||
355 | /**************************************************************************** | |
356 | * Generic packet command support and error handling routines. | |
357 | */ | |
358 | ||
359 | /* Mark that we've seen a media change, and invalidate our internal | |
360 | buffers. */ | |
361 | static void cdrom_saw_media_change (ide_drive_t *drive) | |
362 | { | |
363 | struct cdrom_info *info = drive->driver_data; | |
364 | ||
365 | CDROM_STATE_FLAGS (drive)->media_changed = 1; | |
366 | CDROM_STATE_FLAGS (drive)->toc_valid = 0; | |
367 | info->nsectors_buffered = 0; | |
368 | } | |
369 | ||
370 | static int cdrom_log_sense(ide_drive_t *drive, struct request *rq, | |
371 | struct request_sense *sense) | |
372 | { | |
373 | int log = 0; | |
374 | ||
4aff5e23 | 375 | if (!sense || !rq || (rq->cmd_flags & REQ_QUIET)) |
1da177e4 LT |
376 | return 0; |
377 | ||
378 | switch (sense->sense_key) { | |
379 | case NO_SENSE: case RECOVERED_ERROR: | |
380 | break; | |
381 | case NOT_READY: | |
382 | /* | |
383 | * don't care about tray state messages for | |
384 | * e.g. capacity commands or in-progress or | |
385 | * becoming ready | |
386 | */ | |
387 | if (sense->asc == 0x3a || sense->asc == 0x04) | |
388 | break; | |
389 | log = 1; | |
390 | break; | |
391 | case ILLEGAL_REQUEST: | |
392 | /* | |
393 | * don't log START_STOP unit with LoEj set, since | |
394 | * we cannot reliably check if drive can auto-close | |
395 | */ | |
396 | if (rq->cmd[0] == GPCMD_START_STOP_UNIT && sense->asc == 0x24) | |
dbe217af AC |
397 | break; |
398 | log = 1; | |
1da177e4 LT |
399 | break; |
400 | case UNIT_ATTENTION: | |
401 | /* | |
402 | * Make good and sure we've seen this potential media | |
403 | * change. Some drives (i.e. Creative) fail to present | |
404 | * the correct sense key in the error register. | |
405 | */ | |
406 | cdrom_saw_media_change(drive); | |
407 | break; | |
408 | default: | |
409 | log = 1; | |
410 | break; | |
411 | } | |
412 | return log; | |
413 | } | |
414 | ||
415 | static | |
416 | void cdrom_analyze_sense_data(ide_drive_t *drive, | |
417 | struct request *failed_command, | |
418 | struct request_sense *sense) | |
419 | { | |
dbe217af AC |
420 | unsigned long sector; |
421 | unsigned long bio_sectors; | |
422 | unsigned long valid; | |
423 | struct cdrom_info *info = drive->driver_data; | |
424 | ||
1da177e4 LT |
425 | if (!cdrom_log_sense(drive, failed_command, sense)) |
426 | return; | |
427 | ||
428 | /* | |
429 | * If a read toc is executed for a CD-R or CD-RW medium where | |
430 | * the first toc has not been recorded yet, it will fail with | |
431 | * 05/24/00 (which is a confusing error) | |
432 | */ | |
433 | if (failed_command && failed_command->cmd[0] == GPCMD_READ_TOC_PMA_ATIP) | |
434 | if (sense->sense_key == 0x05 && sense->asc == 0x24) | |
435 | return; | |
436 | ||
dbe217af AC |
437 | if (sense->error_code == 0x70) { /* Current Error */ |
438 | switch(sense->sense_key) { | |
439 | case MEDIUM_ERROR: | |
440 | case VOLUME_OVERFLOW: | |
441 | case ILLEGAL_REQUEST: | |
442 | if (!sense->valid) | |
443 | break; | |
444 | if (failed_command == NULL || | |
445 | !blk_fs_request(failed_command)) | |
446 | break; | |
447 | sector = (sense->information[0] << 24) | | |
448 | (sense->information[1] << 16) | | |
449 | (sense->information[2] << 8) | | |
450 | (sense->information[3]); | |
451 | ||
452 | bio_sectors = bio_sectors(failed_command->bio); | |
453 | if (bio_sectors < 4) | |
454 | bio_sectors = 4; | |
455 | if (drive->queue->hardsect_size == 2048) | |
456 | sector <<= 2; /* Device sector size is 2K */ | |
457 | sector &= ~(bio_sectors -1); | |
458 | valid = (sector - failed_command->sector) << 9; | |
459 | ||
460 | if (valid < 0) | |
461 | valid = 0; | |
462 | if (sector < get_capacity(info->disk) && | |
463 | drive->probed_capacity - sector < 4 * 75) { | |
464 | set_capacity(info->disk, sector); | |
465 | } | |
466 | } | |
467 | } | |
1da177e4 LT |
468 | #if VERBOSE_IDE_CD_ERRORS |
469 | { | |
470 | int i; | |
70d1d47c | 471 | const char *s = "bad sense key!"; |
1da177e4 LT |
472 | char buf[80]; |
473 | ||
474 | printk ("ATAPI device %s:\n", drive->name); | |
475 | if (sense->error_code==0x70) | |
476 | printk(" Error: "); | |
477 | else if (sense->error_code==0x71) | |
478 | printk(" Deferred Error: "); | |
479 | else if (sense->error_code == 0x7f) | |
480 | printk(" Vendor-specific Error: "); | |
481 | else | |
482 | printk(" Unknown Error Type: "); | |
483 | ||
74c8f97a | 484 | if (sense->sense_key < ARRAY_SIZE(sense_key_texts)) |
1da177e4 | 485 | s = sense_key_texts[sense->sense_key]; |
1da177e4 LT |
486 | |
487 | printk("%s -- (Sense key=0x%02x)\n", s, sense->sense_key); | |
488 | ||
489 | if (sense->asc == 0x40) { | |
490 | sprintf(buf, "Diagnostic failure on component 0x%02x", | |
491 | sense->ascq); | |
492 | s = buf; | |
493 | } else { | |
74c8f97a | 494 | int lo = 0, mid, hi = ARRAY_SIZE(sense_data_texts); |
1da177e4 LT |
495 | unsigned long key = (sense->sense_key << 16); |
496 | key |= (sense->asc << 8); | |
497 | if (!(sense->ascq >= 0x80 && sense->ascq <= 0xdd)) | |
498 | key |= sense->ascq; | |
499 | s = NULL; | |
500 | ||
501 | while (hi > lo) { | |
502 | mid = (lo + hi) / 2; | |
503 | if (sense_data_texts[mid].asc_ascq == key || | |
504 | sense_data_texts[mid].asc_ascq == (0xff0000|key)) { | |
505 | s = sense_data_texts[mid].text; | |
506 | break; | |
507 | } | |
508 | else if (sense_data_texts[mid].asc_ascq > key) | |
509 | hi = mid; | |
510 | else | |
511 | lo = mid+1; | |
512 | } | |
513 | } | |
514 | ||
515 | if (s == NULL) { | |
516 | if (sense->asc > 0x80) | |
517 | s = "(vendor-specific error)"; | |
518 | else | |
519 | s = "(reserved error code)"; | |
520 | } | |
521 | ||
522 | printk(KERN_ERR " %s -- (asc=0x%02x, ascq=0x%02x)\n", | |
523 | s, sense->asc, sense->ascq); | |
524 | ||
525 | if (failed_command != NULL) { | |
526 | ||
74c8f97a | 527 | int lo=0, mid, hi= ARRAY_SIZE(packet_command_texts); |
1da177e4 LT |
528 | s = NULL; |
529 | ||
530 | while (hi > lo) { | |
531 | mid = (lo + hi) / 2; | |
532 | if (packet_command_texts[mid].packet_command == | |
533 | failed_command->cmd[0]) { | |
534 | s = packet_command_texts[mid].text; | |
535 | break; | |
536 | } | |
537 | if (packet_command_texts[mid].packet_command > | |
538 | failed_command->cmd[0]) | |
539 | hi = mid; | |
540 | else | |
541 | lo = mid+1; | |
542 | } | |
543 | ||
544 | printk (KERN_ERR " The failed \"%s\" packet command was: \n \"", s); | |
545 | for (i=0; i<sizeof (failed_command->cmd); i++) | |
546 | printk ("%02x ", failed_command->cmd[i]); | |
547 | printk ("\"\n"); | |
548 | } | |
549 | ||
550 | /* The SKSV bit specifies validity of the sense_key_specific | |
551 | * in the next two commands. It is bit 7 of the first byte. | |
552 | * In the case of NOT_READY, if SKSV is set the drive can | |
553 | * give us nice ETA readings. | |
554 | */ | |
555 | if (sense->sense_key == NOT_READY && (sense->sks[0] & 0x80)) { | |
556 | int progress = (sense->sks[1] << 8 | sense->sks[2]) * 100; | |
557 | printk(KERN_ERR " Command is %02d%% complete\n", progress / 0xffff); | |
558 | ||
559 | } | |
560 | ||
561 | if (sense->sense_key == ILLEGAL_REQUEST && | |
562 | (sense->sks[0] & 0x80) != 0) { | |
563 | printk(KERN_ERR " Error in %s byte %d", | |
564 | (sense->sks[0] & 0x40) != 0 ? | |
565 | "command packet" : "command data", | |
566 | (sense->sks[1] << 8) + sense->sks[2]); | |
567 | ||
568 | if ((sense->sks[0] & 0x40) != 0) | |
569 | printk (" bit %d", sense->sks[0] & 0x07); | |
570 | ||
571 | printk ("\n"); | |
572 | } | |
573 | } | |
574 | ||
575 | #else /* not VERBOSE_IDE_CD_ERRORS */ | |
576 | ||
577 | /* Suppress printing unit attention and `in progress of becoming ready' | |
578 | errors when we're not being verbose. */ | |
579 | ||
580 | if (sense->sense_key == UNIT_ATTENTION || | |
581 | (sense->sense_key == NOT_READY && (sense->asc == 4 || | |
582 | sense->asc == 0x3a))) | |
583 | return; | |
584 | ||
585 | printk(KERN_ERR "%s: error code: 0x%02x sense_key: 0x%02x asc: 0x%02x ascq: 0x%02x\n", | |
586 | drive->name, | |
587 | sense->error_code, sense->sense_key, | |
588 | sense->asc, sense->ascq); | |
589 | #endif /* not VERBOSE_IDE_CD_ERRORS */ | |
590 | } | |
591 | ||
592 | /* | |
593 | * Initialize a ide-cd packet command request | |
594 | */ | |
595 | static void cdrom_prepare_request(ide_drive_t *drive, struct request *rq) | |
596 | { | |
597 | struct cdrom_info *cd = drive->driver_data; | |
598 | ||
599 | ide_init_drive_cmd(rq); | |
cea2885a | 600 | rq->cmd_type = REQ_TYPE_ATA_PC; |
1da177e4 LT |
601 | rq->rq_disk = cd->disk; |
602 | } | |
603 | ||
604 | static void cdrom_queue_request_sense(ide_drive_t *drive, void *sense, | |
605 | struct request *failed_command) | |
606 | { | |
607 | struct cdrom_info *info = drive->driver_data; | |
608 | struct request *rq = &info->request_sense_request; | |
609 | ||
610 | if (sense == NULL) | |
611 | sense = &info->sense_data; | |
612 | ||
613 | /* stuff the sense request in front of our current request */ | |
614 | cdrom_prepare_request(drive, rq); | |
615 | ||
616 | rq->data = sense; | |
617 | rq->cmd[0] = GPCMD_REQUEST_SENSE; | |
618 | rq->cmd[4] = rq->data_len = 18; | |
619 | ||
4aff5e23 | 620 | rq->cmd_type = REQ_TYPE_SENSE; |
1da177e4 LT |
621 | |
622 | /* NOTE! Save the failed command in "rq->buffer" */ | |
623 | rq->buffer = (void *) failed_command; | |
624 | ||
625 | (void) ide_do_drive_cmd(drive, rq, ide_preempt); | |
626 | } | |
627 | ||
628 | static void cdrom_end_request (ide_drive_t *drive, int uptodate) | |
629 | { | |
630 | struct request *rq = HWGROUP(drive)->rq; | |
631 | int nsectors = rq->hard_cur_sectors; | |
632 | ||
4aff5e23 | 633 | if (blk_sense_request(rq) && uptodate) { |
1da177e4 | 634 | /* |
4aff5e23 JA |
635 | * For REQ_TYPE_SENSE, "rq->buffer" points to the original |
636 | * failed request | |
1da177e4 LT |
637 | */ |
638 | struct request *failed = (struct request *) rq->buffer; | |
639 | struct cdrom_info *info = drive->driver_data; | |
640 | void *sense = &info->sense_data; | |
641 | unsigned long flags; | |
642 | ||
643 | if (failed) { | |
644 | if (failed->sense) { | |
645 | sense = failed->sense; | |
646 | failed->sense_len = rq->sense_len; | |
647 | } | |
dbe217af | 648 | cdrom_analyze_sense_data(drive, failed, sense); |
1da177e4 LT |
649 | /* |
650 | * now end failed request | |
651 | */ | |
dbe217af AC |
652 | if (blk_fs_request(failed)) { |
653 | if (ide_end_dequeued_request(drive, failed, 0, | |
654 | failed->hard_nr_sectors)) | |
655 | BUG(); | |
656 | } else { | |
657 | spin_lock_irqsave(&ide_lock, flags); | |
5e36bb6e KU |
658 | if (__blk_end_request(failed, -EIO, |
659 | failed->data_len)) | |
660 | BUG(); | |
dbe217af AC |
661 | spin_unlock_irqrestore(&ide_lock, flags); |
662 | } | |
663 | } else | |
664 | cdrom_analyze_sense_data(drive, NULL, sense); | |
1da177e4 LT |
665 | } |
666 | ||
667 | if (!rq->current_nr_sectors && blk_fs_request(rq)) | |
668 | uptodate = 1; | |
669 | /* make sure it's fully ended */ | |
670 | if (blk_pc_request(rq)) | |
671 | nsectors = (rq->data_len + 511) >> 9; | |
672 | if (!nsectors) | |
673 | nsectors = 1; | |
674 | ||
675 | ide_end_request(drive, uptodate, nsectors); | |
676 | } | |
677 | ||
dbe217af AC |
678 | static void ide_dump_status_no_sense(ide_drive_t *drive, const char *msg, u8 stat) |
679 | { | |
680 | if (stat & 0x80) | |
681 | return; | |
682 | ide_dump_status(drive, msg, stat); | |
683 | } | |
684 | ||
1da177e4 LT |
685 | /* Returns 0 if the request should be continued. |
686 | Returns 1 if the request was ended. */ | |
687 | static int cdrom_decode_status(ide_drive_t *drive, int good_stat, int *stat_ret) | |
688 | { | |
689 | struct request *rq = HWGROUP(drive)->rq; | |
690 | int stat, err, sense_key; | |
691 | ||
692 | /* Check for errors. */ | |
693 | stat = HWIF(drive)->INB(IDE_STATUS_REG); | |
694 | if (stat_ret) | |
695 | *stat_ret = stat; | |
696 | ||
697 | if (OK_STAT(stat, good_stat, BAD_R_STAT)) | |
698 | return 0; | |
699 | ||
700 | /* Get the IDE error register. */ | |
701 | err = HWIF(drive)->INB(IDE_ERROR_REG); | |
702 | sense_key = err >> 4; | |
703 | ||
704 | if (rq == NULL) { | |
705 | printk("%s: missing rq in cdrom_decode_status\n", drive->name); | |
706 | return 1; | |
707 | } | |
708 | ||
4aff5e23 | 709 | if (blk_sense_request(rq)) { |
1da177e4 LT |
710 | /* We got an error trying to get sense info |
711 | from the drive (probably while trying | |
712 | to recover from a former error). Just give up. */ | |
713 | ||
4aff5e23 | 714 | rq->cmd_flags |= REQ_FAILED; |
1da177e4 LT |
715 | cdrom_end_request(drive, 0); |
716 | ide_error(drive, "request sense failure", stat); | |
717 | return 1; | |
718 | ||
8770c018 | 719 | } else if (blk_pc_request(rq) || rq->cmd_type == REQ_TYPE_ATA_PC) { |
1da177e4 LT |
720 | /* All other functions, except for READ. */ |
721 | unsigned long flags; | |
722 | ||
723 | /* | |
724 | * if we have an error, pass back CHECK_CONDITION as the | |
725 | * scsi status byte | |
726 | */ | |
b7156731 | 727 | if (blk_pc_request(rq) && !rq->errors) |
1da177e4 LT |
728 | rq->errors = SAM_STAT_CHECK_CONDITION; |
729 | ||
730 | /* Check for tray open. */ | |
731 | if (sense_key == NOT_READY) { | |
732 | cdrom_saw_media_change (drive); | |
733 | } else if (sense_key == UNIT_ATTENTION) { | |
734 | /* Check for media change. */ | |
735 | cdrom_saw_media_change (drive); | |
736 | /*printk("%s: media changed\n",drive->name);*/ | |
737 | return 0; | |
76ca1af1 SH |
738 | } else if ((sense_key == ILLEGAL_REQUEST) && |
739 | (rq->cmd[0] == GPCMD_START_STOP_UNIT)) { | |
740 | /* | |
741 | * Don't print error message for this condition-- | |
742 | * SFF8090i indicates that 5/24/00 is the correct | |
743 | * response to a request to close the tray if the | |
744 | * drive doesn't have that capability. | |
745 | * cdrom_log_sense() knows this! | |
746 | */ | |
4aff5e23 | 747 | } else if (!(rq->cmd_flags & REQ_QUIET)) { |
1da177e4 LT |
748 | /* Otherwise, print an error. */ |
749 | ide_dump_status(drive, "packet command error", stat); | |
750 | } | |
751 | ||
4aff5e23 | 752 | rq->cmd_flags |= REQ_FAILED; |
1da177e4 LT |
753 | |
754 | /* | |
755 | * instead of playing games with moving completions around, | |
756 | * remove failed request completely and end it when the | |
757 | * request sense has completed | |
758 | */ | |
759 | if (stat & ERR_STAT) { | |
760 | spin_lock_irqsave(&ide_lock, flags); | |
761 | blkdev_dequeue_request(rq); | |
762 | HWGROUP(drive)->rq = NULL; | |
763 | spin_unlock_irqrestore(&ide_lock, flags); | |
764 | ||
765 | cdrom_queue_request_sense(drive, rq->sense, rq); | |
766 | } else | |
767 | cdrom_end_request(drive, 0); | |
768 | ||
769 | } else if (blk_fs_request(rq)) { | |
770 | int do_end_request = 0; | |
771 | ||
772 | /* Handle errors from READ and WRITE requests. */ | |
773 | ||
774 | if (blk_noretry_request(rq)) | |
775 | do_end_request = 1; | |
776 | ||
777 | if (sense_key == NOT_READY) { | |
778 | /* Tray open. */ | |
779 | if (rq_data_dir(rq) == READ) { | |
780 | cdrom_saw_media_change (drive); | |
781 | ||
782 | /* Fail the request. */ | |
783 | printk ("%s: tray open\n", drive->name); | |
784 | do_end_request = 1; | |
785 | } else { | |
786 | struct cdrom_info *info = drive->driver_data; | |
787 | ||
788 | /* allow the drive 5 seconds to recover, some | |
789 | * devices will return this error while flushing | |
790 | * data from cache */ | |
791 | if (!rq->errors) | |
792 | info->write_timeout = jiffies + ATAPI_WAIT_WRITE_BUSY; | |
793 | rq->errors = 1; | |
794 | if (time_after(jiffies, info->write_timeout)) | |
795 | do_end_request = 1; | |
796 | else { | |
797 | unsigned long flags; | |
798 | ||
799 | /* | |
800 | * take a breather relying on the | |
801 | * unplug timer to kick us again | |
802 | */ | |
803 | spin_lock_irqsave(&ide_lock, flags); | |
804 | blk_plug_device(drive->queue); | |
805 | spin_unlock_irqrestore(&ide_lock,flags); | |
806 | return 1; | |
807 | } | |
808 | } | |
809 | } else if (sense_key == UNIT_ATTENTION) { | |
810 | /* Media change. */ | |
811 | cdrom_saw_media_change (drive); | |
812 | ||
813 | /* Arrange to retry the request. | |
814 | But be sure to give up if we've retried | |
815 | too many times. */ | |
816 | if (++rq->errors > ERROR_MAX) | |
817 | do_end_request = 1; | |
818 | } else if (sense_key == ILLEGAL_REQUEST || | |
819 | sense_key == DATA_PROTECT) { | |
820 | /* No point in retrying after an illegal | |
821 | request or data protect error.*/ | |
dbe217af | 822 | ide_dump_status_no_sense (drive, "command error", stat); |
1da177e4 LT |
823 | do_end_request = 1; |
824 | } else if (sense_key == MEDIUM_ERROR) { | |
825 | /* No point in re-trying a zillion times on a bad | |
826 | * sector... If we got here the error is not correctable */ | |
dbe217af | 827 | ide_dump_status_no_sense (drive, "media error (bad sector)", stat); |
1da177e4 LT |
828 | do_end_request = 1; |
829 | } else if (sense_key == BLANK_CHECK) { | |
830 | /* Disk appears blank ?? */ | |
dbe217af | 831 | ide_dump_status_no_sense (drive, "media error (blank)", stat); |
1da177e4 LT |
832 | do_end_request = 1; |
833 | } else if ((err & ~ABRT_ERR) != 0) { | |
834 | /* Go to the default handler | |
835 | for other errors. */ | |
836 | ide_error(drive, "cdrom_decode_status", stat); | |
837 | return 1; | |
838 | } else if ((++rq->errors > ERROR_MAX)) { | |
839 | /* We've racked up too many retries. Abort. */ | |
840 | do_end_request = 1; | |
841 | } | |
842 | ||
dbe217af AC |
843 | /* End a request through request sense analysis when we have |
844 | sense data. We need this in order to perform end of media | |
845 | processing */ | |
846 | ||
847 | if (do_end_request) { | |
848 | if (stat & ERR_STAT) { | |
849 | unsigned long flags; | |
850 | spin_lock_irqsave(&ide_lock, flags); | |
851 | blkdev_dequeue_request(rq); | |
852 | HWGROUP(drive)->rq = NULL; | |
853 | spin_unlock_irqrestore(&ide_lock, flags); | |
854 | ||
855 | cdrom_queue_request_sense(drive, rq->sense, rq); | |
856 | } else | |
857 | cdrom_end_request(drive, 0); | |
858 | } else { | |
859 | /* If we got a CHECK_CONDITION status, | |
860 | queue a request sense command. */ | |
861 | if (stat & ERR_STAT) | |
862 | cdrom_queue_request_sense(drive, NULL, NULL); | |
863 | } | |
1da177e4 LT |
864 | } else { |
865 | blk_dump_rq_flags(rq, "ide-cd: bad rq"); | |
866 | cdrom_end_request(drive, 0); | |
867 | } | |
868 | ||
869 | /* Retry, or handle the next request. */ | |
870 | return 1; | |
871 | } | |
872 | ||
873 | static int cdrom_timer_expiry(ide_drive_t *drive) | |
874 | { | |
875 | struct request *rq = HWGROUP(drive)->rq; | |
876 | unsigned long wait = 0; | |
877 | ||
878 | /* | |
879 | * Some commands are *slow* and normally take a long time to | |
880 | * complete. Usually we can use the ATAPI "disconnect" to bypass | |
881 | * this, but not all commands/drives support that. Let | |
882 | * ide_timer_expiry keep polling us for these. | |
883 | */ | |
884 | switch (rq->cmd[0]) { | |
885 | case GPCMD_BLANK: | |
886 | case GPCMD_FORMAT_UNIT: | |
887 | case GPCMD_RESERVE_RZONE_TRACK: | |
888 | case GPCMD_CLOSE_TRACK: | |
889 | case GPCMD_FLUSH_CACHE: | |
890 | wait = ATAPI_WAIT_PC; | |
891 | break; | |
892 | default: | |
4aff5e23 | 893 | if (!(rq->cmd_flags & REQ_QUIET)) |
1da177e4 LT |
894 | printk(KERN_INFO "ide-cd: cmd 0x%x timed out\n", rq->cmd[0]); |
895 | wait = 0; | |
896 | break; | |
897 | } | |
898 | return wait; | |
899 | } | |
900 | ||
901 | /* Set up the device registers for transferring a packet command on DEV, | |
902 | expecting to later transfer XFERLEN bytes. HANDLER is the routine | |
903 | which actually transfers the command to the drive. If this is a | |
904 | drq_interrupt device, this routine will arrange for HANDLER to be | |
905 | called when the interrupt from the drive arrives. Otherwise, HANDLER | |
906 | will be called immediately after the drive is prepared for the transfer. */ | |
907 | ||
908 | static ide_startstop_t cdrom_start_packet_command(ide_drive_t *drive, | |
909 | int xferlen, | |
910 | ide_handler_t *handler) | |
911 | { | |
912 | ide_startstop_t startstop; | |
913 | struct cdrom_info *info = drive->driver_data; | |
914 | ide_hwif_t *hwif = drive->hwif; | |
915 | ||
916 | /* Wait for the controller to be idle. */ | |
917 | if (ide_wait_stat(&startstop, drive, 0, BUSY_STAT, WAIT_READY)) | |
918 | return startstop; | |
919 | ||
3a6a3549 | 920 | /* FIXME: for Virtual DMA we must check harder */ |
1da177e4 LT |
921 | if (info->dma) |
922 | info->dma = !hwif->dma_setup(drive); | |
923 | ||
924 | /* Set up the controller registers. */ | |
2fc57388 BZ |
925 | ide_pktcmd_tf_load(drive, IDE_TFLAG_OUT_NSECT | IDE_TFLAG_OUT_LBAL | |
926 | IDE_TFLAG_NO_SELECT_MASK, xferlen, info->dma); | |
1da177e4 LT |
927 | |
928 | if (CDROM_CONFIG_FLAGS (drive)->drq_interrupt) { | |
f0dd8712 AL |
929 | /* waiting for CDB interrupt, not DMA yet. */ |
930 | if (info->dma) | |
931 | drive->waiting_for_dma = 0; | |
932 | ||
1da177e4 LT |
933 | /* packet command */ |
934 | ide_execute_command(drive, WIN_PACKETCMD, handler, ATAPI_WAIT_PC, cdrom_timer_expiry); | |
935 | return ide_started; | |
936 | } else { | |
937 | unsigned long flags; | |
938 | ||
939 | /* packet command */ | |
940 | spin_lock_irqsave(&ide_lock, flags); | |
941 | hwif->OUTBSYNC(drive, WIN_PACKETCMD, IDE_COMMAND_REG); | |
942 | ndelay(400); | |
943 | spin_unlock_irqrestore(&ide_lock, flags); | |
944 | ||
945 | return (*handler) (drive); | |
946 | } | |
947 | } | |
948 | ||
949 | /* Send a packet command to DRIVE described by CMD_BUF and CMD_LEN. | |
950 | The device registers must have already been prepared | |
951 | by cdrom_start_packet_command. | |
952 | HANDLER is the interrupt handler to call when the command completes | |
953 | or there's data ready. */ | |
954 | /* | |
955 | * changed 5 parameters to 3 for dvd-ram | |
956 | * struct packet_command *pc; now packet_command_t *pc; | |
957 | */ | |
958 | #define ATAPI_MIN_CDB_BYTES 12 | |
959 | static ide_startstop_t cdrom_transfer_packet_command (ide_drive_t *drive, | |
960 | struct request *rq, | |
961 | ide_handler_t *handler) | |
962 | { | |
963 | ide_hwif_t *hwif = drive->hwif; | |
964 | int cmd_len; | |
965 | struct cdrom_info *info = drive->driver_data; | |
966 | ide_startstop_t startstop; | |
967 | ||
968 | if (CDROM_CONFIG_FLAGS(drive)->drq_interrupt) { | |
969 | /* Here we should have been called after receiving an interrupt | |
970 | from the device. DRQ should how be set. */ | |
971 | ||
972 | /* Check for errors. */ | |
973 | if (cdrom_decode_status(drive, DRQ_STAT, NULL)) | |
974 | return ide_stopped; | |
f0dd8712 AL |
975 | |
976 | /* Ok, next interrupt will be DMA interrupt. */ | |
977 | if (info->dma) | |
978 | drive->waiting_for_dma = 1; | |
1da177e4 LT |
979 | } else { |
980 | /* Otherwise, we must wait for DRQ to get set. */ | |
981 | if (ide_wait_stat(&startstop, drive, DRQ_STAT, | |
982 | BUSY_STAT, WAIT_READY)) | |
983 | return startstop; | |
984 | } | |
985 | ||
986 | /* Arm the interrupt handler. */ | |
987 | ide_set_handler(drive, handler, rq->timeout, cdrom_timer_expiry); | |
988 | ||
989 | /* ATAPI commands get padded out to 12 bytes minimum */ | |
990 | cmd_len = COMMAND_SIZE(rq->cmd[0]); | |
991 | if (cmd_len < ATAPI_MIN_CDB_BYTES) | |
992 | cmd_len = ATAPI_MIN_CDB_BYTES; | |
993 | ||
994 | /* Send the command to the device. */ | |
995 | HWIF(drive)->atapi_output_bytes(drive, rq->cmd, cmd_len); | |
996 | ||
997 | /* Start the DMA if need be */ | |
998 | if (info->dma) | |
999 | hwif->dma_start(drive); | |
1000 | ||
1001 | return ide_started; | |
1002 | } | |
1003 | ||
1004 | /**************************************************************************** | |
1005 | * Block read functions. | |
1006 | */ | |
1007 | ||
1008 | /* | |
1009 | * Buffer up to SECTORS_TO_TRANSFER sectors from the drive in our sector | |
1010 | * buffer. Once the first sector is added, any subsequent sectors are | |
1011 | * assumed to be continuous (until the buffer is cleared). For the first | |
1012 | * sector added, SECTOR is its sector number. (SECTOR is then ignored until | |
1013 | * the buffer is cleared.) | |
1014 | */ | |
1015 | static void cdrom_buffer_sectors (ide_drive_t *drive, unsigned long sector, | |
1016 | int sectors_to_transfer) | |
1017 | { | |
1018 | struct cdrom_info *info = drive->driver_data; | |
1019 | ||
1020 | /* Number of sectors to read into the buffer. */ | |
1021 | int sectors_to_buffer = min_t(int, sectors_to_transfer, | |
1022 | (SECTOR_BUFFER_SIZE >> SECTOR_BITS) - | |
1023 | info->nsectors_buffered); | |
1024 | ||
1025 | char *dest; | |
1026 | ||
1027 | /* If we couldn't get a buffer, don't try to buffer anything... */ | |
1028 | if (info->buffer == NULL) | |
1029 | sectors_to_buffer = 0; | |
1030 | ||
1031 | /* If this is the first sector in the buffer, remember its number. */ | |
1032 | if (info->nsectors_buffered == 0) | |
1033 | info->sector_buffered = sector; | |
1034 | ||
1035 | /* Read the data into the buffer. */ | |
1036 | dest = info->buffer + info->nsectors_buffered * SECTOR_SIZE; | |
1037 | while (sectors_to_buffer > 0) { | |
1038 | HWIF(drive)->atapi_input_bytes(drive, dest, SECTOR_SIZE); | |
1039 | --sectors_to_buffer; | |
1040 | --sectors_to_transfer; | |
1041 | ++info->nsectors_buffered; | |
1042 | dest += SECTOR_SIZE; | |
1043 | } | |
1044 | ||
1045 | /* Throw away any remaining data. */ | |
1046 | while (sectors_to_transfer > 0) { | |
1047 | static char dum[SECTOR_SIZE]; | |
1048 | HWIF(drive)->atapi_input_bytes(drive, dum, sizeof (dum)); | |
1049 | --sectors_to_transfer; | |
1050 | } | |
1051 | } | |
1052 | ||
1053 | /* | |
1054 | * Check the contents of the interrupt reason register from the cdrom | |
1055 | * and attempt to recover if there are problems. Returns 0 if everything's | |
1056 | * ok; nonzero if the request has been terminated. | |
1057 | */ | |
858119e1 | 1058 | static |
1da177e4 LT |
1059 | int cdrom_read_check_ireason (ide_drive_t *drive, int len, int ireason) |
1060 | { | |
1061 | if (ireason == 2) | |
1062 | return 0; | |
1063 | else if (ireason == 0) { | |
1064 | /* Whoops... The drive is expecting to receive data from us! */ | |
35379c07 BZ |
1065 | printk(KERN_ERR "%s: %s: wrong transfer direction!\n", |
1066 | drive->name, __FUNCTION__); | |
1da177e4 LT |
1067 | |
1068 | /* Throw some data at the drive so it doesn't hang | |
1069 | and quit this request. */ | |
1070 | while (len > 0) { | |
1071 | int dum = 0; | |
1072 | HWIF(drive)->atapi_output_bytes(drive, &dum, sizeof (dum)); | |
1073 | len -= sizeof (dum); | |
1074 | } | |
1075 | } else if (ireason == 1) { | |
1076 | /* Some drives (ASUS) seem to tell us that status | |
1077 | * info is available. just get it and ignore. | |
1078 | */ | |
1079 | (void) HWIF(drive)->INB(IDE_STATUS_REG); | |
1080 | return 0; | |
1081 | } else { | |
1082 | /* Drive wants a command packet, or invalid ireason... */ | |
35379c07 BZ |
1083 | printk(KERN_ERR "%s: %s: bad interrupt reason 0x%02x\n", |
1084 | drive->name, __FUNCTION__, ireason); | |
1da177e4 LT |
1085 | } |
1086 | ||
1087 | cdrom_end_request(drive, 0); | |
1088 | return -1; | |
1089 | } | |
1090 | ||
1091 | /* | |
1092 | * Interrupt routine. Called when a read request has completed. | |
1093 | */ | |
1094 | static ide_startstop_t cdrom_read_intr (ide_drive_t *drive) | |
1095 | { | |
1096 | int stat; | |
1097 | int ireason, len, sectors_to_transfer, nskip; | |
1098 | struct cdrom_info *info = drive->driver_data; | |
1099 | u8 lowcyl = 0, highcyl = 0; | |
1100 | int dma = info->dma, dma_error = 0; | |
1101 | ||
1102 | struct request *rq = HWGROUP(drive)->rq; | |
1103 | ||
1104 | /* | |
1105 | * handle dma case | |
1106 | */ | |
1107 | if (dma) { | |
1108 | info->dma = 0; | |
52ef2ed0 BZ |
1109 | dma_error = HWIF(drive)->ide_dma_end(drive); |
1110 | if (dma_error) { | |
1111 | printk(KERN_ERR "%s: DMA read error\n", drive->name); | |
7469aaf6 | 1112 | ide_dma_off(drive); |
52ef2ed0 | 1113 | } |
1da177e4 LT |
1114 | } |
1115 | ||
1116 | if (cdrom_decode_status(drive, 0, &stat)) | |
1117 | return ide_stopped; | |
1118 | ||
1119 | if (dma) { | |
1120 | if (!dma_error) { | |
1121 | ide_end_request(drive, 1, rq->nr_sectors); | |
1122 | return ide_stopped; | |
1123 | } else | |
1124 | return ide_error(drive, "dma error", stat); | |
1125 | } | |
1126 | ||
1127 | /* Read the interrupt reason and the transfer length. */ | |
1128 | ireason = HWIF(drive)->INB(IDE_IREASON_REG) & 0x3; | |
1129 | lowcyl = HWIF(drive)->INB(IDE_BCOUNTL_REG); | |
1130 | highcyl = HWIF(drive)->INB(IDE_BCOUNTH_REG); | |
1131 | ||
1132 | len = lowcyl + (256 * highcyl); | |
1133 | ||
1134 | /* If DRQ is clear, the command has completed. */ | |
1135 | if ((stat & DRQ_STAT) == 0) { | |
1136 | /* If we're not done filling the current buffer, complain. | |
1137 | Otherwise, complete the command normally. */ | |
1138 | if (rq->current_nr_sectors > 0) { | |
1139 | printk (KERN_ERR "%s: cdrom_read_intr: data underrun (%d blocks)\n", | |
1140 | drive->name, rq->current_nr_sectors); | |
4aff5e23 | 1141 | rq->cmd_flags |= REQ_FAILED; |
1da177e4 LT |
1142 | cdrom_end_request(drive, 0); |
1143 | } else | |
1144 | cdrom_end_request(drive, 1); | |
1145 | return ide_stopped; | |
1146 | } | |
1147 | ||
1148 | /* Check that the drive is expecting to do the same thing we are. */ | |
1149 | if (cdrom_read_check_ireason (drive, len, ireason)) | |
1150 | return ide_stopped; | |
1151 | ||
1152 | /* Assume that the drive will always provide data in multiples | |
1153 | of at least SECTOR_SIZE, as it gets hairy to keep track | |
1154 | of the transfers otherwise. */ | |
1155 | if ((len % SECTOR_SIZE) != 0) { | |
1156 | printk (KERN_ERR "%s: cdrom_read_intr: Bad transfer size %d\n", | |
1157 | drive->name, len); | |
1158 | if (CDROM_CONFIG_FLAGS(drive)->limit_nframes) | |
1159 | printk (KERN_ERR " This drive is not supported by this version of the driver\n"); | |
1160 | else { | |
1161 | printk (KERN_ERR " Trying to limit transfer sizes\n"); | |
1162 | CDROM_CONFIG_FLAGS(drive)->limit_nframes = 1; | |
1163 | } | |
1164 | cdrom_end_request(drive, 0); | |
1165 | return ide_stopped; | |
1166 | } | |
1167 | ||
1168 | /* The number of sectors we need to read from the drive. */ | |
1169 | sectors_to_transfer = len / SECTOR_SIZE; | |
1170 | ||
1171 | /* First, figure out if we need to bit-bucket | |
1172 | any of the leading sectors. */ | |
1173 | nskip = min_t(int, rq->current_nr_sectors - bio_cur_sectors(rq->bio), sectors_to_transfer); | |
1174 | ||
1175 | while (nskip > 0) { | |
1176 | /* We need to throw away a sector. */ | |
1177 | static char dum[SECTOR_SIZE]; | |
1178 | HWIF(drive)->atapi_input_bytes(drive, dum, sizeof (dum)); | |
1179 | ||
1180 | --rq->current_nr_sectors; | |
1181 | --nskip; | |
1182 | --sectors_to_transfer; | |
1183 | } | |
1184 | ||
1185 | /* Now loop while we still have data to read from the drive. */ | |
1186 | while (sectors_to_transfer > 0) { | |
1187 | int this_transfer; | |
1188 | ||
1189 | /* If we've filled the present buffer but there's another | |
1190 | chained buffer after it, move on. */ | |
1191 | if (rq->current_nr_sectors == 0 && rq->nr_sectors) | |
1192 | cdrom_end_request(drive, 1); | |
1193 | ||
1194 | /* If the buffers are full, cache the rest of the data in our | |
1195 | internal buffer. */ | |
1196 | if (rq->current_nr_sectors == 0) { | |
1197 | cdrom_buffer_sectors(drive, rq->sector, sectors_to_transfer); | |
1198 | sectors_to_transfer = 0; | |
1199 | } else { | |
1200 | /* Transfer data to the buffers. | |
1201 | Figure out how many sectors we can transfer | |
1202 | to the current buffer. */ | |
1203 | this_transfer = min_t(int, sectors_to_transfer, | |
1204 | rq->current_nr_sectors); | |
1205 | ||
1206 | /* Read this_transfer sectors | |
1207 | into the current buffer. */ | |
1208 | while (this_transfer > 0) { | |
1209 | HWIF(drive)->atapi_input_bytes(drive, rq->buffer, SECTOR_SIZE); | |
1210 | rq->buffer += SECTOR_SIZE; | |
1211 | --rq->nr_sectors; | |
1212 | --rq->current_nr_sectors; | |
1213 | ++rq->sector; | |
1214 | --this_transfer; | |
1215 | --sectors_to_transfer; | |
1216 | } | |
1217 | } | |
1218 | } | |
1219 | ||
1220 | /* Done moving data! Wait for another interrupt. */ | |
1221 | ide_set_handler(drive, &cdrom_read_intr, ATAPI_WAIT_PC, NULL); | |
1222 | return ide_started; | |
1223 | } | |
1224 | ||
1225 | /* | |
1226 | * Try to satisfy some of the current read request from our cached data. | |
1227 | * Returns nonzero if the request has been completed, zero otherwise. | |
1228 | */ | |
1229 | static int cdrom_read_from_buffer (ide_drive_t *drive) | |
1230 | { | |
1231 | struct cdrom_info *info = drive->driver_data; | |
1232 | struct request *rq = HWGROUP(drive)->rq; | |
1233 | unsigned short sectors_per_frame; | |
1234 | ||
1235 | sectors_per_frame = queue_hardsect_size(drive->queue) >> SECTOR_BITS; | |
1236 | ||
1237 | /* Can't do anything if there's no buffer. */ | |
1238 | if (info->buffer == NULL) return 0; | |
1239 | ||
1240 | /* Loop while this request needs data and the next block is present | |
1241 | in our cache. */ | |
1242 | while (rq->nr_sectors > 0 && | |
1243 | rq->sector >= info->sector_buffered && | |
1244 | rq->sector < info->sector_buffered + info->nsectors_buffered) { | |
1245 | if (rq->current_nr_sectors == 0) | |
1246 | cdrom_end_request(drive, 1); | |
1247 | ||
1248 | memcpy (rq->buffer, | |
1249 | info->buffer + | |
1250 | (rq->sector - info->sector_buffered) * SECTOR_SIZE, | |
1251 | SECTOR_SIZE); | |
1252 | rq->buffer += SECTOR_SIZE; | |
1253 | --rq->current_nr_sectors; | |
1254 | --rq->nr_sectors; | |
1255 | ++rq->sector; | |
1256 | } | |
1257 | ||
1258 | /* If we've satisfied the current request, | |
1259 | terminate it successfully. */ | |
1260 | if (rq->nr_sectors == 0) { | |
1261 | cdrom_end_request(drive, 1); | |
1262 | return -1; | |
1263 | } | |
1264 | ||
1265 | /* Move on to the next buffer if needed. */ | |
1266 | if (rq->current_nr_sectors == 0) | |
1267 | cdrom_end_request(drive, 1); | |
1268 | ||
1269 | /* If this condition does not hold, then the kluge i use to | |
1270 | represent the number of sectors to skip at the start of a transfer | |
1271 | will fail. I think that this will never happen, but let's be | |
1272 | paranoid and check. */ | |
1273 | if (rq->current_nr_sectors < bio_cur_sectors(rq->bio) && | |
1274 | (rq->sector & (sectors_per_frame - 1))) { | |
1275 | printk(KERN_ERR "%s: cdrom_read_from_buffer: buffer botch (%ld)\n", | |
1276 | drive->name, (long)rq->sector); | |
1277 | cdrom_end_request(drive, 0); | |
1278 | return -1; | |
1279 | } | |
1280 | ||
1281 | return 0; | |
1282 | } | |
1283 | ||
1284 | /* | |
1285 | * Routine to send a read packet command to the drive. | |
1286 | * This is usually called directly from cdrom_start_read. | |
1287 | * However, for drq_interrupt devices, it is called from an interrupt | |
1288 | * when the drive is ready to accept the command. | |
1289 | */ | |
1290 | static ide_startstop_t cdrom_start_read_continuation (ide_drive_t *drive) | |
1291 | { | |
1292 | struct request *rq = HWGROUP(drive)->rq; | |
1293 | unsigned short sectors_per_frame; | |
1294 | int nskip; | |
1295 | ||
1296 | sectors_per_frame = queue_hardsect_size(drive->queue) >> SECTOR_BITS; | |
1297 | ||
1298 | /* If the requested sector doesn't start on a cdrom block boundary, | |
1299 | we must adjust the start of the transfer so that it does, | |
1300 | and remember to skip the first few sectors. | |
1301 | If the CURRENT_NR_SECTORS field is larger than the size | |
1302 | of the buffer, it will mean that we're to skip a number | |
1303 | of sectors equal to the amount by which CURRENT_NR_SECTORS | |
1304 | is larger than the buffer size. */ | |
1305 | nskip = rq->sector & (sectors_per_frame - 1); | |
1306 | if (nskip > 0) { | |
1307 | /* Sanity check... */ | |
1308 | if (rq->current_nr_sectors != bio_cur_sectors(rq->bio) && | |
1309 | (rq->sector & (sectors_per_frame - 1))) { | |
1310 | printk(KERN_ERR "%s: cdrom_start_read_continuation: buffer botch (%u)\n", | |
1311 | drive->name, rq->current_nr_sectors); | |
1312 | cdrom_end_request(drive, 0); | |
1313 | return ide_stopped; | |
1314 | } | |
1315 | rq->current_nr_sectors += nskip; | |
1316 | } | |
1317 | ||
1318 | /* Set up the command */ | |
1319 | rq->timeout = ATAPI_WAIT_PC; | |
1320 | ||
1321 | /* Send the command to the drive and return. */ | |
1322 | return cdrom_transfer_packet_command(drive, rq, &cdrom_read_intr); | |
1323 | } | |
1324 | ||
1325 | ||
1326 | #define IDECD_SEEK_THRESHOLD (1000) /* 1000 blocks */ | |
1327 | #define IDECD_SEEK_TIMER (5 * WAIT_MIN_SLEEP) /* 100 ms */ | |
1328 | #define IDECD_SEEK_TIMEOUT (2 * WAIT_CMD) /* 20 sec */ | |
1329 | ||
1330 | static ide_startstop_t cdrom_seek_intr (ide_drive_t *drive) | |
1331 | { | |
1332 | struct cdrom_info *info = drive->driver_data; | |
1333 | int stat; | |
1334 | static int retry = 10; | |
1335 | ||
1336 | if (cdrom_decode_status(drive, 0, &stat)) | |
1337 | return ide_stopped; | |
1338 | CDROM_CONFIG_FLAGS(drive)->seeking = 1; | |
1339 | ||
1340 | if (retry && time_after(jiffies, info->start_seek + IDECD_SEEK_TIMER)) { | |
1341 | if (--retry == 0) { | |
1342 | /* | |
1343 | * this condition is far too common, to bother | |
1344 | * users about it | |
1345 | */ | |
1346 | /* printk("%s: disabled DSC seek overlap\n", drive->name);*/ | |
1347 | drive->dsc_overlap = 0; | |
1348 | } | |
1349 | } | |
1350 | return ide_stopped; | |
1351 | } | |
1352 | ||
1353 | static ide_startstop_t cdrom_start_seek_continuation (ide_drive_t *drive) | |
1354 | { | |
1355 | struct request *rq = HWGROUP(drive)->rq; | |
1356 | sector_t frame = rq->sector; | |
1357 | ||
1358 | sector_div(frame, queue_hardsect_size(drive->queue) >> SECTOR_BITS); | |
1359 | ||
1360 | memset(rq->cmd, 0, sizeof(rq->cmd)); | |
1361 | rq->cmd[0] = GPCMD_SEEK; | |
1362 | put_unaligned(cpu_to_be32(frame), (unsigned int *) &rq->cmd[2]); | |
1363 | ||
1364 | rq->timeout = ATAPI_WAIT_PC; | |
1365 | return cdrom_transfer_packet_command(drive, rq, &cdrom_seek_intr); | |
1366 | } | |
1367 | ||
1368 | static ide_startstop_t cdrom_start_seek (ide_drive_t *drive, unsigned int block) | |
1369 | { | |
1370 | struct cdrom_info *info = drive->driver_data; | |
1371 | ||
1372 | info->dma = 0; | |
1da177e4 LT |
1373 | info->start_seek = jiffies; |
1374 | return cdrom_start_packet_command(drive, 0, cdrom_start_seek_continuation); | |
1375 | } | |
1376 | ||
1377 | /* Fix up a possibly partially-processed request so that we can | |
1378 | start it over entirely, or even put it back on the request queue. */ | |
1379 | static void restore_request (struct request *rq) | |
1380 | { | |
1381 | if (rq->buffer != bio_data(rq->bio)) { | |
1382 | sector_t n = (rq->buffer - (char *) bio_data(rq->bio)) / SECTOR_SIZE; | |
1383 | ||
1384 | rq->buffer = bio_data(rq->bio); | |
1385 | rq->nr_sectors += n; | |
1386 | rq->sector -= n; | |
1387 | } | |
1388 | rq->hard_cur_sectors = rq->current_nr_sectors = bio_cur_sectors(rq->bio); | |
1389 | rq->hard_nr_sectors = rq->nr_sectors; | |
1390 | rq->hard_sector = rq->sector; | |
1391 | rq->q->prep_rq_fn(rq->q, rq); | |
1392 | } | |
1393 | ||
1394 | /* | |
1395 | * Start a read request from the CD-ROM. | |
1396 | */ | |
1397 | static ide_startstop_t cdrom_start_read (ide_drive_t *drive, unsigned int block) | |
1398 | { | |
1399 | struct cdrom_info *info = drive->driver_data; | |
1400 | struct request *rq = HWGROUP(drive)->rq; | |
1401 | unsigned short sectors_per_frame; | |
1402 | ||
1403 | sectors_per_frame = queue_hardsect_size(drive->queue) >> SECTOR_BITS; | |
1404 | ||
1405 | /* We may be retrying this request after an error. Fix up | |
1406 | any weirdness which might be present in the request packet. */ | |
1407 | restore_request(rq); | |
1408 | ||
1409 | /* Satisfy whatever we can of this request from our cached sector. */ | |
1410 | if (cdrom_read_from_buffer(drive)) | |
1411 | return ide_stopped; | |
1412 | ||
1da177e4 LT |
1413 | /* Clear the local sector buffer. */ |
1414 | info->nsectors_buffered = 0; | |
1415 | ||
1416 | /* use dma, if possible. */ | |
1417 | info->dma = drive->using_dma; | |
1418 | if ((rq->sector & (sectors_per_frame - 1)) || | |
1419 | (rq->nr_sectors & (sectors_per_frame - 1))) | |
1420 | info->dma = 0; | |
1421 | ||
1da177e4 LT |
1422 | /* Start sending the read request to the drive. */ |
1423 | return cdrom_start_packet_command(drive, 32768, cdrom_start_read_continuation); | |
1424 | } | |
1425 | ||
1426 | /**************************************************************************** | |
1427 | * Execute all other packet commands. | |
1428 | */ | |
1429 | ||
1430 | /* Interrupt routine for packet command completion. */ | |
1431 | static ide_startstop_t cdrom_pc_intr (ide_drive_t *drive) | |
1432 | { | |
1433 | int ireason, len, thislen; | |
1434 | struct request *rq = HWGROUP(drive)->rq; | |
1435 | u8 lowcyl = 0, highcyl = 0; | |
1436 | int stat; | |
1437 | ||
1438 | /* Check for errors. */ | |
1439 | if (cdrom_decode_status(drive, 0, &stat)) | |
1440 | return ide_stopped; | |
1441 | ||
1442 | /* Read the interrupt reason and the transfer length. */ | |
8606ab09 | 1443 | ireason = HWIF(drive)->INB(IDE_IREASON_REG) & 0x3; |
1da177e4 LT |
1444 | lowcyl = HWIF(drive)->INB(IDE_BCOUNTL_REG); |
1445 | highcyl = HWIF(drive)->INB(IDE_BCOUNTH_REG); | |
1446 | ||
1447 | len = lowcyl + (256 * highcyl); | |
1448 | ||
1449 | /* If DRQ is clear, the command has completed. | |
1450 | Complain if we still have data left to transfer. */ | |
1451 | if ((stat & DRQ_STAT) == 0) { | |
1452 | /* Some of the trailing request sense fields are optional, and | |
1453 | some drives don't send them. Sigh. */ | |
1454 | if (rq->cmd[0] == GPCMD_REQUEST_SENSE && | |
1455 | rq->data_len > 0 && | |
1456 | rq->data_len <= 5) { | |
1457 | while (rq->data_len > 0) { | |
1458 | *(unsigned char *)rq->data++ = 0; | |
1459 | --rq->data_len; | |
1460 | } | |
1461 | } | |
1462 | ||
1463 | if (rq->data_len == 0) | |
1464 | cdrom_end_request(drive, 1); | |
1465 | else { | |
1466 | /* Comment this out, because this always happens | |
1467 | right after a reset occurs, and it is annoying to | |
1468 | always print expected stuff. */ | |
1469 | /* | |
1470 | printk ("%s: cdrom_pc_intr: data underrun %d\n", | |
1471 | drive->name, pc->buflen); | |
1472 | */ | |
4aff5e23 | 1473 | rq->cmd_flags |= REQ_FAILED; |
1da177e4 LT |
1474 | cdrom_end_request(drive, 0); |
1475 | } | |
1476 | return ide_stopped; | |
1477 | } | |
1478 | ||
1479 | /* Figure out how much data to transfer. */ | |
1480 | thislen = rq->data_len; | |
1481 | if (thislen > len) thislen = len; | |
1482 | ||
1483 | /* The drive wants to be written to. */ | |
8606ab09 | 1484 | if (ireason == 0) { |
1da177e4 LT |
1485 | if (!rq->data) { |
1486 | blk_dump_rq_flags(rq, "cdrom_pc_intr, write"); | |
1487 | goto confused; | |
1488 | } | |
1489 | /* Transfer the data. */ | |
1490 | HWIF(drive)->atapi_output_bytes(drive, rq->data, thislen); | |
1491 | ||
1492 | /* If we haven't moved enough data to satisfy the drive, | |
1493 | add some padding. */ | |
1494 | while (len > thislen) { | |
1495 | int dum = 0; | |
1496 | HWIF(drive)->atapi_output_bytes(drive, &dum, sizeof(dum)); | |
1497 | len -= sizeof(dum); | |
1498 | } | |
1499 | ||
1500 | /* Keep count of how much data we've moved. */ | |
1501 | rq->data += thislen; | |
1502 | rq->data_len -= thislen; | |
1503 | } | |
1504 | ||
1505 | /* Same drill for reading. */ | |
8606ab09 | 1506 | else if (ireason == 2) { |
1da177e4 | 1507 | if (!rq->data) { |
5744a061 | 1508 | blk_dump_rq_flags(rq, "cdrom_pc_intr, read"); |
1da177e4 LT |
1509 | goto confused; |
1510 | } | |
1511 | /* Transfer the data. */ | |
1512 | HWIF(drive)->atapi_input_bytes(drive, rq->data, thislen); | |
1513 | ||
1514 | /* If we haven't moved enough data to satisfy the drive, | |
1515 | add some padding. */ | |
1516 | while (len > thislen) { | |
1517 | int dum = 0; | |
1518 | HWIF(drive)->atapi_input_bytes(drive, &dum, sizeof(dum)); | |
1519 | len -= sizeof(dum); | |
1520 | } | |
1521 | ||
1522 | /* Keep count of how much data we've moved. */ | |
1523 | rq->data += thislen; | |
1524 | rq->data_len -= thislen; | |
1525 | ||
4aff5e23 | 1526 | if (blk_sense_request(rq)) |
1da177e4 LT |
1527 | rq->sense_len += thislen; |
1528 | } else { | |
1529 | confused: | |
1530 | printk (KERN_ERR "%s: cdrom_pc_intr: The drive " | |
1ad55440 RK |
1531 | "appears confused (ireason = 0x%02x). " |
1532 | "Trying to recover by ending request.\n", | |
1da177e4 | 1533 | drive->name, ireason); |
4aff5e23 | 1534 | rq->cmd_flags |= REQ_FAILED; |
1ad55440 RK |
1535 | cdrom_end_request(drive, 0); |
1536 | return ide_stopped; | |
1da177e4 LT |
1537 | } |
1538 | ||
1539 | /* Now we wait for another interrupt. */ | |
1540 | ide_set_handler(drive, &cdrom_pc_intr, ATAPI_WAIT_PC, cdrom_timer_expiry); | |
1541 | return ide_started; | |
1542 | } | |
1543 | ||
1544 | static ide_startstop_t cdrom_do_pc_continuation (ide_drive_t *drive) | |
1545 | { | |
1546 | struct request *rq = HWGROUP(drive)->rq; | |
1547 | ||
1548 | if (!rq->timeout) | |
1549 | rq->timeout = ATAPI_WAIT_PC; | |
1550 | ||
1551 | /* Send the command to the drive and return. */ | |
1552 | return cdrom_transfer_packet_command(drive, rq, &cdrom_pc_intr); | |
1553 | } | |
1554 | ||
1555 | ||
1556 | static ide_startstop_t cdrom_do_packet_command (ide_drive_t *drive) | |
1557 | { | |
1558 | int len; | |
1559 | struct request *rq = HWGROUP(drive)->rq; | |
1560 | struct cdrom_info *info = drive->driver_data; | |
1561 | ||
1562 | info->dma = 0; | |
4aff5e23 | 1563 | rq->cmd_flags &= ~REQ_FAILED; |
1da177e4 LT |
1564 | len = rq->data_len; |
1565 | ||
1566 | /* Start sending the command to the drive. */ | |
1567 | return cdrom_start_packet_command(drive, len, cdrom_do_pc_continuation); | |
1568 | } | |
1569 | ||
1570 | ||
dbe217af | 1571 | static int cdrom_queue_packet_command(ide_drive_t *drive, struct request *rq) |
1da177e4 LT |
1572 | { |
1573 | struct request_sense sense; | |
1574 | int retries = 10; | |
4aff5e23 | 1575 | unsigned int flags = rq->cmd_flags; |
1da177e4 LT |
1576 | |
1577 | if (rq->sense == NULL) | |
1578 | rq->sense = &sense; | |
1579 | ||
1580 | /* Start of retry loop. */ | |
1581 | do { | |
1582 | int error; | |
1583 | unsigned long time = jiffies; | |
4aff5e23 | 1584 | rq->cmd_flags = flags; |
1da177e4 LT |
1585 | |
1586 | error = ide_do_drive_cmd(drive, rq, ide_wait); | |
1587 | time = jiffies - time; | |
1588 | ||
1589 | /* FIXME: we should probably abort/retry or something | |
1590 | * in case of failure */ | |
4aff5e23 | 1591 | if (rq->cmd_flags & REQ_FAILED) { |
1da177e4 LT |
1592 | /* The request failed. Retry if it was due to a unit |
1593 | attention status | |
1594 | (usually means media was changed). */ | |
1595 | struct request_sense *reqbuf = rq->sense; | |
1596 | ||
1597 | if (reqbuf->sense_key == UNIT_ATTENTION) | |
1598 | cdrom_saw_media_change(drive); | |
1599 | else if (reqbuf->sense_key == NOT_READY && | |
1600 | reqbuf->asc == 4 && reqbuf->ascq != 4) { | |
1601 | /* The drive is in the process of loading | |
1602 | a disk. Retry, but wait a little to give | |
1603 | the drive time to complete the load. */ | |
1604 | ssleep(2); | |
1605 | } else { | |
1606 | /* Otherwise, don't retry. */ | |
1607 | retries = 0; | |
1608 | } | |
1609 | --retries; | |
1610 | } | |
1611 | ||
1612 | /* End of retry loop. */ | |
4aff5e23 | 1613 | } while ((rq->cmd_flags & REQ_FAILED) && retries >= 0); |
1da177e4 LT |
1614 | |
1615 | /* Return an error if the command failed. */ | |
4aff5e23 | 1616 | return (rq->cmd_flags & REQ_FAILED) ? -EIO : 0; |
1da177e4 LT |
1617 | } |
1618 | ||
1619 | /* | |
1620 | * Write handling | |
1621 | */ | |
858119e1 | 1622 | static int cdrom_write_check_ireason(ide_drive_t *drive, int len, int ireason) |
1da177e4 LT |
1623 | { |
1624 | /* Two notes about IDE interrupt reason here - 0 means that | |
1625 | * the drive wants to receive data from us, 2 means that | |
1626 | * the drive is expecting to transfer data to us. | |
1627 | */ | |
1628 | if (ireason == 0) | |
1629 | return 0; | |
1630 | else if (ireason == 2) { | |
1631 | /* Whoops... The drive wants to send data. */ | |
35379c07 BZ |
1632 | printk(KERN_ERR "%s: %s: wrong transfer direction!\n", |
1633 | drive->name, __FUNCTION__); | |
1da177e4 LT |
1634 | |
1635 | while (len > 0) { | |
1636 | int dum = 0; | |
1637 | HWIF(drive)->atapi_input_bytes(drive, &dum, sizeof(dum)); | |
1638 | len -= sizeof(dum); | |
1639 | } | |
1640 | } else { | |
1641 | /* Drive wants a command packet, or invalid ireason... */ | |
35379c07 BZ |
1642 | printk(KERN_ERR "%s: %s: bad interrupt reason 0x%02x\n", |
1643 | drive->name, __FUNCTION__, ireason); | |
1da177e4 LT |
1644 | } |
1645 | ||
1646 | cdrom_end_request(drive, 0); | |
1647 | return 1; | |
1648 | } | |
1649 | ||
1da177e4 LT |
1650 | typedef void (xfer_func_t)(ide_drive_t *, void *, u32); |
1651 | ||
1652 | /* | |
1653 | * best way to deal with dma that is not sector aligned right now... note | |
1654 | * that in this path we are not using ->data or ->buffer at all. this irs | |
1655 | * can replace cdrom_pc_intr, cdrom_read_intr, and cdrom_write_intr in the | |
1656 | * future. | |
1657 | */ | |
1658 | static ide_startstop_t cdrom_newpc_intr(ide_drive_t *drive) | |
1659 | { | |
1660 | struct cdrom_info *info = drive->driver_data; | |
1661 | struct request *rq = HWGROUP(drive)->rq; | |
1662 | int dma_error, dma, stat, ireason, len, thislen; | |
1663 | u8 lowcyl, highcyl; | |
1664 | xfer_func_t *xferfunc; | |
1665 | unsigned long flags; | |
1666 | ||
1667 | /* Check for errors. */ | |
1668 | dma_error = 0; | |
1669 | dma = info->dma; | |
1670 | if (dma) { | |
1671 | info->dma = 0; | |
1672 | dma_error = HWIF(drive)->ide_dma_end(drive); | |
1673 | } | |
1674 | ||
1675 | if (cdrom_decode_status(drive, 0, &stat)) | |
1676 | return ide_stopped; | |
1677 | ||
1678 | /* | |
1679 | * using dma, transfer is complete now | |
1680 | */ | |
1681 | if (dma) { | |
1682 | if (dma_error) { | |
1683 | printk(KERN_ERR "ide-cd: dma error\n"); | |
7469aaf6 | 1684 | ide_dma_off(drive); |
1da177e4 LT |
1685 | return ide_error(drive, "dma error", stat); |
1686 | } | |
1687 | ||
1688 | end_that_request_chunk(rq, 1, rq->data_len); | |
1689 | rq->data_len = 0; | |
1690 | goto end_request; | |
1691 | } | |
1692 | ||
1693 | /* | |
1694 | * ok we fall to pio :/ | |
1695 | */ | |
1696 | ireason = HWIF(drive)->INB(IDE_IREASON_REG) & 0x3; | |
1697 | lowcyl = HWIF(drive)->INB(IDE_BCOUNTL_REG); | |
1698 | highcyl = HWIF(drive)->INB(IDE_BCOUNTH_REG); | |
1699 | ||
1700 | len = lowcyl + (256 * highcyl); | |
1701 | thislen = rq->data_len; | |
1702 | if (thislen > len) | |
1703 | thislen = len; | |
1704 | ||
1705 | /* | |
1706 | * If DRQ is clear, the command has completed. | |
1707 | */ | |
1708 | if ((stat & DRQ_STAT) == 0) | |
1709 | goto end_request; | |
1710 | ||
1711 | /* | |
1712 | * check which way to transfer data | |
1713 | */ | |
1714 | if (rq_data_dir(rq) == WRITE) { | |
1715 | /* | |
1716 | * write to drive | |
1717 | */ | |
1718 | if (cdrom_write_check_ireason(drive, len, ireason)) | |
1719 | return ide_stopped; | |
1720 | ||
1721 | xferfunc = HWIF(drive)->atapi_output_bytes; | |
1722 | } else { | |
1723 | /* | |
1724 | * read from drive | |
1725 | */ | |
1726 | if (cdrom_read_check_ireason(drive, len, ireason)) | |
1727 | return ide_stopped; | |
1728 | ||
1729 | xferfunc = HWIF(drive)->atapi_input_bytes; | |
1730 | } | |
1731 | ||
1732 | /* | |
1733 | * transfer data | |
1734 | */ | |
1735 | while (thislen > 0) { | |
1736 | int blen = blen = rq->data_len; | |
1737 | char *ptr = rq->data; | |
1738 | ||
1739 | /* | |
1740 | * bio backed? | |
1741 | */ | |
1742 | if (rq->bio) { | |
1743 | ptr = bio_data(rq->bio); | |
1744 | blen = bio_iovec(rq->bio)->bv_len; | |
1745 | } | |
1746 | ||
1747 | if (!ptr) { | |
1748 | printk(KERN_ERR "%s: confused, missing data\n", drive->name); | |
1749 | break; | |
1750 | } | |
1751 | ||
1752 | if (blen > thislen) | |
1753 | blen = thislen; | |
1754 | ||
1755 | xferfunc(drive, ptr, blen); | |
1756 | ||
1757 | thislen -= blen; | |
1758 | len -= blen; | |
1759 | rq->data_len -= blen; | |
1760 | ||
1761 | if (rq->bio) | |
1762 | end_that_request_chunk(rq, 1, blen); | |
1763 | else | |
1764 | rq->data += blen; | |
1765 | } | |
1766 | ||
1767 | /* | |
1768 | * pad, if necessary | |
1769 | */ | |
1770 | if (len > 0) { | |
1771 | while (len > 0) { | |
1772 | int pad = 0; | |
1773 | ||
1774 | xferfunc(drive, &pad, sizeof(pad)); | |
1775 | len -= sizeof(pad); | |
1776 | } | |
1777 | } | |
1778 | ||
125e1874 | 1779 | BUG_ON(HWGROUP(drive)->handler != NULL); |
1da177e4 LT |
1780 | |
1781 | ide_set_handler(drive, cdrom_newpc_intr, rq->timeout, NULL); | |
1782 | return ide_started; | |
1783 | ||
1784 | end_request: | |
1da177e4 LT |
1785 | spin_lock_irqsave(&ide_lock, flags); |
1786 | blkdev_dequeue_request(rq); | |
8ffdc655 | 1787 | end_that_request_last(rq, 1); |
1da177e4 LT |
1788 | HWGROUP(drive)->rq = NULL; |
1789 | spin_unlock_irqrestore(&ide_lock, flags); | |
1790 | return ide_stopped; | |
1791 | } | |
1792 | ||
1793 | static ide_startstop_t cdrom_write_intr(ide_drive_t *drive) | |
1794 | { | |
1795 | int stat, ireason, len, sectors_to_transfer, uptodate; | |
1796 | struct cdrom_info *info = drive->driver_data; | |
1797 | int dma_error = 0, dma = info->dma; | |
1798 | u8 lowcyl = 0, highcyl = 0; | |
1799 | ||
1800 | struct request *rq = HWGROUP(drive)->rq; | |
1801 | ||
1802 | /* Check for errors. */ | |
1803 | if (dma) { | |
1804 | info->dma = 0; | |
b481b238 BZ |
1805 | dma_error = HWIF(drive)->ide_dma_end(drive); |
1806 | if (dma_error) { | |
1807 | printk(KERN_ERR "%s: DMA write error\n", drive->name); | |
7469aaf6 | 1808 | ide_dma_off(drive); |
1da177e4 LT |
1809 | } |
1810 | } | |
1811 | ||
1812 | if (cdrom_decode_status(drive, 0, &stat)) | |
1813 | return ide_stopped; | |
1814 | ||
1815 | /* | |
1816 | * using dma, transfer is complete now | |
1817 | */ | |
1818 | if (dma) { | |
1819 | if (dma_error) | |
1820 | return ide_error(drive, "dma error", stat); | |
1821 | ||
1822 | ide_end_request(drive, 1, rq->nr_sectors); | |
1823 | return ide_stopped; | |
1824 | } | |
1825 | ||
1826 | /* Read the interrupt reason and the transfer length. */ | |
31a71191 | 1827 | ireason = HWIF(drive)->INB(IDE_IREASON_REG) & 0x3; |
1da177e4 LT |
1828 | lowcyl = HWIF(drive)->INB(IDE_BCOUNTL_REG); |
1829 | highcyl = HWIF(drive)->INB(IDE_BCOUNTH_REG); | |
1830 | ||
1831 | len = lowcyl + (256 * highcyl); | |
1832 | ||
1833 | /* If DRQ is clear, the command has completed. */ | |
1834 | if ((stat & DRQ_STAT) == 0) { | |
1835 | /* If we're not done writing, complain. | |
1836 | * Otherwise, complete the command normally. | |
1837 | */ | |
1838 | uptodate = 1; | |
1839 | if (rq->current_nr_sectors > 0) { | |
b481b238 BZ |
1840 | printk(KERN_ERR "%s: %s: data underrun (%d blocks)\n", |
1841 | drive->name, __FUNCTION__, | |
1842 | rq->current_nr_sectors); | |
1da177e4 LT |
1843 | uptodate = 0; |
1844 | } | |
1845 | cdrom_end_request(drive, uptodate); | |
1846 | return ide_stopped; | |
1847 | } | |
1848 | ||
1849 | /* Check that the drive is expecting to do the same thing we are. */ | |
1850 | if (cdrom_write_check_ireason(drive, len, ireason)) | |
1851 | return ide_stopped; | |
1852 | ||
1853 | sectors_to_transfer = len / SECTOR_SIZE; | |
1854 | ||
1855 | /* | |
1856 | * now loop and write out the data | |
1857 | */ | |
1858 | while (sectors_to_transfer > 0) { | |
1859 | int this_transfer; | |
1860 | ||
1861 | if (!rq->current_nr_sectors) { | |
b481b238 BZ |
1862 | printk(KERN_ERR "%s: %s: confused, missing data\n", |
1863 | drive->name, __FUNCTION__); | |
1da177e4 LT |
1864 | break; |
1865 | } | |
1866 | ||
1867 | /* | |
1868 | * Figure out how many sectors we can transfer | |
1869 | */ | |
1870 | this_transfer = min_t(int, sectors_to_transfer, rq->current_nr_sectors); | |
1871 | ||
1872 | while (this_transfer > 0) { | |
1873 | HWIF(drive)->atapi_output_bytes(drive, rq->buffer, SECTOR_SIZE); | |
1874 | rq->buffer += SECTOR_SIZE; | |
1875 | --rq->nr_sectors; | |
1876 | --rq->current_nr_sectors; | |
1877 | ++rq->sector; | |
1878 | --this_transfer; | |
1879 | --sectors_to_transfer; | |
1880 | } | |
1881 | ||
1882 | /* | |
1883 | * current buffer complete, move on | |
1884 | */ | |
1885 | if (rq->current_nr_sectors == 0 && rq->nr_sectors) | |
1886 | cdrom_end_request(drive, 1); | |
1887 | } | |
1888 | ||
1889 | /* re-arm handler */ | |
1890 | ide_set_handler(drive, &cdrom_write_intr, ATAPI_WAIT_PC, NULL); | |
1891 | return ide_started; | |
1892 | } | |
1893 | ||
1894 | static ide_startstop_t cdrom_start_write_cont(ide_drive_t *drive) | |
1895 | { | |
1896 | struct request *rq = HWGROUP(drive)->rq; | |
1897 | ||
1898 | #if 0 /* the immediate bit */ | |
1899 | rq->cmd[1] = 1 << 3; | |
1900 | #endif | |
1901 | rq->timeout = ATAPI_WAIT_PC; | |
1902 | ||
1903 | return cdrom_transfer_packet_command(drive, rq, cdrom_write_intr); | |
1904 | } | |
1905 | ||
1906 | static ide_startstop_t cdrom_start_write(ide_drive_t *drive, struct request *rq) | |
1907 | { | |
1908 | struct cdrom_info *info = drive->driver_data; | |
1909 | struct gendisk *g = info->disk; | |
1910 | unsigned short sectors_per_frame = queue_hardsect_size(drive->queue) >> SECTOR_BITS; | |
1911 | ||
1912 | /* | |
1913 | * writes *must* be hardware frame aligned | |
1914 | */ | |
1915 | if ((rq->nr_sectors & (sectors_per_frame - 1)) || | |
1916 | (rq->sector & (sectors_per_frame - 1))) { | |
1917 | cdrom_end_request(drive, 0); | |
1918 | return ide_stopped; | |
1919 | } | |
1920 | ||
1921 | /* | |
1922 | * disk has become write protected | |
1923 | */ | |
1924 | if (g->policy) { | |
1925 | cdrom_end_request(drive, 0); | |
1926 | return ide_stopped; | |
1927 | } | |
1928 | ||
1da177e4 LT |
1929 | info->nsectors_buffered = 0; |
1930 | ||
1931 | /* use dma, if possible. we don't need to check more, since we | |
1932 | * know that the transfer is always (at least!) frame aligned */ | |
1933 | info->dma = drive->using_dma ? 1 : 0; | |
1da177e4 LT |
1934 | |
1935 | info->devinfo.media_written = 1; | |
1936 | ||
1937 | /* Start sending the write request to the drive. */ | |
1938 | return cdrom_start_packet_command(drive, 32768, cdrom_start_write_cont); | |
1939 | } | |
1940 | ||
1941 | static ide_startstop_t cdrom_do_newpc_cont(ide_drive_t *drive) | |
1942 | { | |
1943 | struct request *rq = HWGROUP(drive)->rq; | |
1944 | ||
1945 | if (!rq->timeout) | |
1946 | rq->timeout = ATAPI_WAIT_PC; | |
1947 | ||
1948 | return cdrom_transfer_packet_command(drive, rq, cdrom_newpc_intr); | |
1949 | } | |
1950 | ||
1951 | static ide_startstop_t cdrom_do_block_pc(ide_drive_t *drive, struct request *rq) | |
1952 | { | |
1953 | struct cdrom_info *info = drive->driver_data; | |
1954 | ||
4aff5e23 | 1955 | rq->cmd_flags |= REQ_QUIET; |
1da177e4 LT |
1956 | |
1957 | info->dma = 0; | |
1da177e4 LT |
1958 | |
1959 | /* | |
1960 | * sg request | |
1961 | */ | |
1962 | if (rq->bio) { | |
1963 | int mask = drive->queue->dma_alignment; | |
1964 | unsigned long addr = (unsigned long) page_address(bio_page(rq->bio)); | |
1965 | ||
1da177e4 LT |
1966 | info->dma = drive->using_dma; |
1967 | ||
1968 | /* | |
1969 | * check if dma is safe | |
5d9e4ea5 LT |
1970 | * |
1971 | * NOTE! The "len" and "addr" checks should possibly have | |
1972 | * separate masks. | |
1da177e4 | 1973 | */ |
4e7c6816 | 1974 | if ((rq->data_len & 15) || (addr & mask)) |
1da177e4 LT |
1975 | info->dma = 0; |
1976 | } | |
1977 | ||
1978 | /* Start sending the command to the drive. */ | |
1979 | return cdrom_start_packet_command(drive, rq->data_len, cdrom_do_newpc_cont); | |
1980 | } | |
1981 | ||
1982 | /**************************************************************************** | |
1983 | * cdrom driver request routine. | |
1984 | */ | |
1985 | static ide_startstop_t | |
1986 | ide_do_rw_cdrom (ide_drive_t *drive, struct request *rq, sector_t block) | |
1987 | { | |
1988 | ide_startstop_t action; | |
1989 | struct cdrom_info *info = drive->driver_data; | |
1990 | ||
1991 | if (blk_fs_request(rq)) { | |
1992 | if (CDROM_CONFIG_FLAGS(drive)->seeking) { | |
1993 | unsigned long elapsed = jiffies - info->start_seek; | |
1994 | int stat = HWIF(drive)->INB(IDE_STATUS_REG); | |
1995 | ||
1996 | if ((stat & SEEK_STAT) != SEEK_STAT) { | |
1997 | if (elapsed < IDECD_SEEK_TIMEOUT) { | |
1998 | ide_stall_queue(drive, IDECD_SEEK_TIMER); | |
1999 | return ide_stopped; | |
2000 | } | |
2001 | printk (KERN_ERR "%s: DSC timeout\n", drive->name); | |
2002 | } | |
2003 | CDROM_CONFIG_FLAGS(drive)->seeking = 0; | |
2004 | } | |
2005 | if ((rq_data_dir(rq) == READ) && IDE_LARGE_SEEK(info->last_block, block, IDECD_SEEK_THRESHOLD) && drive->dsc_overlap) { | |
2006 | action = cdrom_start_seek(drive, block); | |
2007 | } else { | |
2008 | if (rq_data_dir(rq) == READ) | |
2009 | action = cdrom_start_read(drive, block); | |
2010 | else | |
2011 | action = cdrom_start_write(drive, rq); | |
2012 | } | |
2013 | info->last_block = block; | |
2014 | return action; | |
cea2885a JA |
2015 | } else if (rq->cmd_type == REQ_TYPE_SENSE || |
2016 | rq->cmd_type == REQ_TYPE_ATA_PC) { | |
1da177e4 | 2017 | return cdrom_do_packet_command(drive); |
4aff5e23 | 2018 | } else if (blk_pc_request(rq)) { |
1da177e4 | 2019 | return cdrom_do_block_pc(drive, rq); |
4aff5e23 | 2020 | } else if (blk_special_request(rq)) { |
1da177e4 LT |
2021 | /* |
2022 | * right now this can only be a reset... | |
2023 | */ | |
2024 | cdrom_end_request(drive, 1); | |
2025 | return ide_stopped; | |
2026 | } | |
2027 | ||
2028 | blk_dump_rq_flags(rq, "ide-cd bad flags"); | |
2029 | cdrom_end_request(drive, 0); | |
2030 | return ide_stopped; | |
2031 | } | |
2032 | ||
2033 | ||
2034 | ||
2035 | /**************************************************************************** | |
2036 | * Ioctl handling. | |
2037 | * | |
2038 | * Routines which queue packet commands take as a final argument a pointer | |
2039 | * to a request_sense struct. If execution of the command results | |
2040 | * in an error with a CHECK CONDITION status, this structure will be filled | |
2041 | * with the results of the subsequent request sense command. The pointer | |
2042 | * can also be NULL, in which case no sense information is returned. | |
2043 | */ | |
2044 | ||
2045 | #if ! STANDARD_ATAPI | |
2046 | static inline | |
2047 | int bin2bcd (int x) | |
2048 | { | |
2049 | return (x%10) | ((x/10) << 4); | |
2050 | } | |
2051 | ||
2052 | ||
2053 | static inline | |
2054 | int bcd2bin (int x) | |
2055 | { | |
2056 | return (x >> 4) * 10 + (x & 0x0f); | |
2057 | } | |
2058 | ||
2059 | static | |
2060 | void msf_from_bcd (struct atapi_msf *msf) | |
2061 | { | |
2062 | msf->minute = bcd2bin (msf->minute); | |
2063 | msf->second = bcd2bin (msf->second); | |
2064 | msf->frame = bcd2bin (msf->frame); | |
2065 | } | |
2066 | ||
2067 | #endif /* not STANDARD_ATAPI */ | |
2068 | ||
2069 | ||
2070 | static inline | |
2071 | void lba_to_msf (int lba, byte *m, byte *s, byte *f) | |
2072 | { | |
2073 | lba += CD_MSF_OFFSET; | |
2074 | lba &= 0xffffff; /* negative lbas use only 24 bits */ | |
2075 | *m = lba / (CD_SECS * CD_FRAMES); | |
2076 | lba %= (CD_SECS * CD_FRAMES); | |
2077 | *s = lba / CD_FRAMES; | |
2078 | *f = lba % CD_FRAMES; | |
2079 | } | |
2080 | ||
2081 | ||
2082 | static inline | |
2083 | int msf_to_lba (byte m, byte s, byte f) | |
2084 | { | |
2085 | return (((m * CD_SECS) + s) * CD_FRAMES + f) - CD_MSF_OFFSET; | |
2086 | } | |
2087 | ||
2088 | static int cdrom_check_status(ide_drive_t *drive, struct request_sense *sense) | |
2089 | { | |
2090 | struct request req; | |
2091 | struct cdrom_info *info = drive->driver_data; | |
2092 | struct cdrom_device_info *cdi = &info->devinfo; | |
2093 | ||
2094 | cdrom_prepare_request(drive, &req); | |
2095 | ||
2096 | req.sense = sense; | |
2097 | req.cmd[0] = GPCMD_TEST_UNIT_READY; | |
4aff5e23 | 2098 | req.cmd_flags |= REQ_QUIET; |
1da177e4 LT |
2099 | |
2100 | #if ! STANDARD_ATAPI | |
2101 | /* the Sanyo 3 CD changer uses byte 7 of TEST_UNIT_READY to | |
2102 | switch CDs instead of supporting the LOAD_UNLOAD opcode */ | |
2103 | ||
2104 | req.cmd[7] = cdi->sanyo_slot % 3; | |
2105 | #endif /* not STANDARD_ATAPI */ | |
2106 | ||
2107 | return cdrom_queue_packet_command(drive, &req); | |
2108 | } | |
2109 | ||
2110 | ||
2111 | /* Lock the door if LOCKFLAG is nonzero; unlock it otherwise. */ | |
2112 | static int | |
2113 | cdrom_lockdoor(ide_drive_t *drive, int lockflag, struct request_sense *sense) | |
2114 | { | |
2115 | struct request_sense my_sense; | |
2116 | struct request req; | |
2117 | int stat; | |
2118 | ||
2119 | if (sense == NULL) | |
2120 | sense = &my_sense; | |
2121 | ||
2122 | /* If the drive cannot lock the door, just pretend. */ | |
2123 | if (CDROM_CONFIG_FLAGS(drive)->no_doorlock) { | |
2124 | stat = 0; | |
2125 | } else { | |
2126 | cdrom_prepare_request(drive, &req); | |
2127 | req.sense = sense; | |
2128 | req.cmd[0] = GPCMD_PREVENT_ALLOW_MEDIUM_REMOVAL; | |
2129 | req.cmd[4] = lockflag ? 1 : 0; | |
2130 | stat = cdrom_queue_packet_command(drive, &req); | |
2131 | } | |
2132 | ||
2133 | /* If we got an illegal field error, the drive | |
2134 | probably cannot lock the door. */ | |
2135 | if (stat != 0 && | |
2136 | sense->sense_key == ILLEGAL_REQUEST && | |
2137 | (sense->asc == 0x24 || sense->asc == 0x20)) { | |
2138 | printk (KERN_ERR "%s: door locking not supported\n", | |
2139 | drive->name); | |
2140 | CDROM_CONFIG_FLAGS(drive)->no_doorlock = 1; | |
2141 | stat = 0; | |
2142 | } | |
2143 | ||
2144 | /* no medium, that's alright. */ | |
2145 | if (stat != 0 && sense->sense_key == NOT_READY && sense->asc == 0x3a) | |
2146 | stat = 0; | |
2147 | ||
2148 | if (stat == 0) | |
2149 | CDROM_STATE_FLAGS(drive)->door_locked = lockflag; | |
2150 | ||
2151 | return stat; | |
2152 | } | |
2153 | ||
2154 | ||
2155 | /* Eject the disk if EJECTFLAG is 0. | |
2156 | If EJECTFLAG is 1, try to reload the disk. */ | |
2157 | static int cdrom_eject(ide_drive_t *drive, int ejectflag, | |
2158 | struct request_sense *sense) | |
2159 | { | |
2160 | struct request req; | |
2161 | char loej = 0x02; | |
2162 | ||
2163 | if (CDROM_CONFIG_FLAGS(drive)->no_eject && !ejectflag) | |
2164 | return -EDRIVE_CANT_DO_THIS; | |
2165 | ||
2166 | /* reload fails on some drives, if the tray is locked */ | |
2167 | if (CDROM_STATE_FLAGS(drive)->door_locked && ejectflag) | |
2168 | return 0; | |
2169 | ||
2170 | cdrom_prepare_request(drive, &req); | |
2171 | ||
2172 | /* only tell drive to close tray if open, if it can do that */ | |
2173 | if (ejectflag && !CDROM_CONFIG_FLAGS(drive)->close_tray) | |
2174 | loej = 0; | |
2175 | ||
2176 | req.sense = sense; | |
2177 | req.cmd[0] = GPCMD_START_STOP_UNIT; | |
2178 | req.cmd[4] = loej | (ejectflag != 0); | |
2179 | return cdrom_queue_packet_command(drive, &req); | |
2180 | } | |
2181 | ||
2182 | static int cdrom_read_capacity(ide_drive_t *drive, unsigned long *capacity, | |
2183 | unsigned long *sectors_per_frame, | |
2184 | struct request_sense *sense) | |
2185 | { | |
2186 | struct { | |
2187 | __u32 lba; | |
2188 | __u32 blocklen; | |
2189 | } capbuf; | |
2190 | ||
2191 | int stat; | |
2192 | struct request req; | |
2193 | ||
2194 | cdrom_prepare_request(drive, &req); | |
2195 | ||
2196 | req.sense = sense; | |
2197 | req.cmd[0] = GPCMD_READ_CDVD_CAPACITY; | |
2198 | req.data = (char *)&capbuf; | |
2199 | req.data_len = sizeof(capbuf); | |
4aff5e23 | 2200 | req.cmd_flags |= REQ_QUIET; |
1da177e4 LT |
2201 | |
2202 | stat = cdrom_queue_packet_command(drive, &req); | |
2203 | if (stat == 0) { | |
2204 | *capacity = 1 + be32_to_cpu(capbuf.lba); | |
2205 | *sectors_per_frame = | |
2206 | be32_to_cpu(capbuf.blocklen) >> SECTOR_BITS; | |
2207 | } | |
2208 | ||
2209 | return stat; | |
2210 | } | |
2211 | ||
2212 | static int cdrom_read_tocentry(ide_drive_t *drive, int trackno, int msf_flag, | |
2213 | int format, char *buf, int buflen, | |
2214 | struct request_sense *sense) | |
2215 | { | |
2216 | struct request req; | |
2217 | ||
2218 | cdrom_prepare_request(drive, &req); | |
2219 | ||
2220 | req.sense = sense; | |
2221 | req.data = buf; | |
2222 | req.data_len = buflen; | |
4aff5e23 | 2223 | req.cmd_flags |= REQ_QUIET; |
1da177e4 LT |
2224 | req.cmd[0] = GPCMD_READ_TOC_PMA_ATIP; |
2225 | req.cmd[6] = trackno; | |
2226 | req.cmd[7] = (buflen >> 8); | |
2227 | req.cmd[8] = (buflen & 0xff); | |
2228 | req.cmd[9] = (format << 6); | |
2229 | ||
2230 | if (msf_flag) | |
2231 | req.cmd[1] = 2; | |
2232 | ||
2233 | return cdrom_queue_packet_command(drive, &req); | |
2234 | } | |
2235 | ||
2236 | ||
2237 | /* Try to read the entire TOC for the disk into our internal buffer. */ | |
2238 | static int cdrom_read_toc(ide_drive_t *drive, struct request_sense *sense) | |
2239 | { | |
2240 | int stat, ntracks, i; | |
2241 | struct cdrom_info *info = drive->driver_data; | |
2242 | struct cdrom_device_info *cdi = &info->devinfo; | |
2243 | struct atapi_toc *toc = info->toc; | |
2244 | struct { | |
2245 | struct atapi_toc_header hdr; | |
2246 | struct atapi_toc_entry ent; | |
2247 | } ms_tmp; | |
2248 | long last_written; | |
2249 | unsigned long sectors_per_frame = SECTORS_PER_FRAME; | |
2250 | ||
2251 | if (toc == NULL) { | |
2252 | /* Try to allocate space. */ | |
2a91f3e5 | 2253 | toc = kmalloc(sizeof(struct atapi_toc), GFP_KERNEL); |
1da177e4 LT |
2254 | if (toc == NULL) { |
2255 | printk (KERN_ERR "%s: No cdrom TOC buffer!\n", drive->name); | |
2256 | return -ENOMEM; | |
2257 | } | |
2a91f3e5 | 2258 | info->toc = toc; |
1da177e4 LT |
2259 | } |
2260 | ||
2261 | /* Check to see if the existing data is still valid. | |
2262 | If it is, just return. */ | |
2263 | (void) cdrom_check_status(drive, sense); | |
2264 | ||
2265 | if (CDROM_STATE_FLAGS(drive)->toc_valid) | |
2266 | return 0; | |
2267 | ||
2268 | /* Try to get the total cdrom capacity and sector size. */ | |
2269 | stat = cdrom_read_capacity(drive, &toc->capacity, §ors_per_frame, | |
2270 | sense); | |
2271 | if (stat) | |
2272 | toc->capacity = 0x1fffff; | |
2273 | ||
2274 | set_capacity(info->disk, toc->capacity * sectors_per_frame); | |
dbe217af AC |
2275 | /* Save a private copy of te TOC capacity for error handling */ |
2276 | drive->probed_capacity = toc->capacity * sectors_per_frame; | |
2277 | ||
1da177e4 LT |
2278 | blk_queue_hardsect_size(drive->queue, |
2279 | sectors_per_frame << SECTOR_BITS); | |
2280 | ||
2281 | /* First read just the header, so we know how long the TOC is. */ | |
2282 | stat = cdrom_read_tocentry(drive, 0, 1, 0, (char *) &toc->hdr, | |
2283 | sizeof(struct atapi_toc_header), sense); | |
2a91f3e5 JJ |
2284 | if (stat) |
2285 | return stat; | |
1da177e4 LT |
2286 | |
2287 | #if ! STANDARD_ATAPI | |
2288 | if (CDROM_CONFIG_FLAGS(drive)->toctracks_as_bcd) { | |
2289 | toc->hdr.first_track = bcd2bin(toc->hdr.first_track); | |
2290 | toc->hdr.last_track = bcd2bin(toc->hdr.last_track); | |
2291 | } | |
2292 | #endif /* not STANDARD_ATAPI */ | |
2293 | ||
2294 | ntracks = toc->hdr.last_track - toc->hdr.first_track + 1; | |
2295 | if (ntracks <= 0) | |
2296 | return -EIO; | |
2297 | if (ntracks > MAX_TRACKS) | |
2298 | ntracks = MAX_TRACKS; | |
2299 | ||
2300 | /* Now read the whole schmeer. */ | |
2301 | stat = cdrom_read_tocentry(drive, toc->hdr.first_track, 1, 0, | |
2302 | (char *)&toc->hdr, | |
2303 | sizeof(struct atapi_toc_header) + | |
2304 | (ntracks + 1) * | |
2305 | sizeof(struct atapi_toc_entry), sense); | |
2306 | ||
2307 | if (stat && toc->hdr.first_track > 1) { | |
2308 | /* Cds with CDI tracks only don't have any TOC entries, | |
2309 | despite of this the returned values are | |
2310 | first_track == last_track = number of CDI tracks + 1, | |
2311 | so that this case is indistinguishable from the same | |
2312 | layout plus an additional audio track. | |
2313 | If we get an error for the regular case, we assume | |
2314 | a CDI without additional audio tracks. In this case | |
2315 | the readable TOC is empty (CDI tracks are not included) | |
96de0e25 | 2316 | and only holds the Leadout entry. Heiko Eißfeldt */ |
1da177e4 LT |
2317 | ntracks = 0; |
2318 | stat = cdrom_read_tocentry(drive, CDROM_LEADOUT, 1, 0, | |
2319 | (char *)&toc->hdr, | |
2320 | sizeof(struct atapi_toc_header) + | |
2321 | (ntracks + 1) * | |
2322 | sizeof(struct atapi_toc_entry), | |
2323 | sense); | |
2324 | if (stat) { | |
2325 | return stat; | |
2326 | } | |
2327 | #if ! STANDARD_ATAPI | |
2328 | if (CDROM_CONFIG_FLAGS(drive)->toctracks_as_bcd) { | |
2329 | toc->hdr.first_track = bin2bcd(CDROM_LEADOUT); | |
2330 | toc->hdr.last_track = bin2bcd(CDROM_LEADOUT); | |
2331 | } else | |
2332 | #endif /* not STANDARD_ATAPI */ | |
2333 | { | |
2334 | toc->hdr.first_track = CDROM_LEADOUT; | |
2335 | toc->hdr.last_track = CDROM_LEADOUT; | |
2336 | } | |
2337 | } | |
2338 | ||
2339 | if (stat) | |
2340 | return stat; | |
2341 | ||
2342 | toc->hdr.toc_length = ntohs (toc->hdr.toc_length); | |
2343 | ||
2344 | #if ! STANDARD_ATAPI | |
2345 | if (CDROM_CONFIG_FLAGS(drive)->toctracks_as_bcd) { | |
2346 | toc->hdr.first_track = bcd2bin(toc->hdr.first_track); | |
2347 | toc->hdr.last_track = bcd2bin(toc->hdr.last_track); | |
2348 | } | |
2349 | #endif /* not STANDARD_ATAPI */ | |
2350 | ||
2351 | for (i=0; i<=ntracks; i++) { | |
2352 | #if ! STANDARD_ATAPI | |
2353 | if (CDROM_CONFIG_FLAGS(drive)->tocaddr_as_bcd) { | |
2354 | if (CDROM_CONFIG_FLAGS(drive)->toctracks_as_bcd) | |
2355 | toc->ent[i].track = bcd2bin(toc->ent[i].track); | |
2356 | msf_from_bcd(&toc->ent[i].addr.msf); | |
2357 | } | |
2358 | #endif /* not STANDARD_ATAPI */ | |
2359 | toc->ent[i].addr.lba = msf_to_lba (toc->ent[i].addr.msf.minute, | |
2360 | toc->ent[i].addr.msf.second, | |
2361 | toc->ent[i].addr.msf.frame); | |
2362 | } | |
2363 | ||
2364 | /* Read the multisession information. */ | |
2365 | if (toc->hdr.first_track != CDROM_LEADOUT) { | |
2366 | /* Read the multisession information. */ | |
2367 | stat = cdrom_read_tocentry(drive, 0, 0, 1, (char *)&ms_tmp, | |
2368 | sizeof(ms_tmp), sense); | |
2a91f3e5 JJ |
2369 | if (stat) |
2370 | return stat; | |
1da177e4 LT |
2371 | |
2372 | toc->last_session_lba = be32_to_cpu(ms_tmp.ent.addr.lba); | |
2373 | } else { | |
2374 | ms_tmp.hdr.first_track = ms_tmp.hdr.last_track = CDROM_LEADOUT; | |
2375 | toc->last_session_lba = msf_to_lba(0, 2, 0); /* 0m 2s 0f */ | |
2376 | } | |
2377 | ||
2378 | #if ! STANDARD_ATAPI | |
2379 | if (CDROM_CONFIG_FLAGS(drive)->tocaddr_as_bcd) { | |
2380 | /* Re-read multisession information using MSF format */ | |
2381 | stat = cdrom_read_tocentry(drive, 0, 1, 1, (char *)&ms_tmp, | |
2382 | sizeof(ms_tmp), sense); | |
2383 | if (stat) | |
2384 | return stat; | |
2385 | ||
2386 | msf_from_bcd (&ms_tmp.ent.addr.msf); | |
2387 | toc->last_session_lba = msf_to_lba(ms_tmp.ent.addr.msf.minute, | |
2388 | ms_tmp.ent.addr.msf.second, | |
2389 | ms_tmp.ent.addr.msf.frame); | |
2390 | } | |
2391 | #endif /* not STANDARD_ATAPI */ | |
2392 | ||
2393 | toc->xa_flag = (ms_tmp.hdr.first_track != ms_tmp.hdr.last_track); | |
2394 | ||
2395 | /* Now try to get the total cdrom capacity. */ | |
2396 | stat = cdrom_get_last_written(cdi, &last_written); | |
2397 | if (!stat && (last_written > toc->capacity)) { | |
2398 | toc->capacity = last_written; | |
2399 | set_capacity(info->disk, toc->capacity * sectors_per_frame); | |
dbe217af | 2400 | drive->probed_capacity = toc->capacity * sectors_per_frame; |
1da177e4 LT |
2401 | } |
2402 | ||
2403 | /* Remember that we've read this stuff. */ | |
2404 | CDROM_STATE_FLAGS(drive)->toc_valid = 1; | |
2405 | ||
2406 | return 0; | |
2407 | } | |
2408 | ||
2409 | ||
2410 | static int cdrom_read_subchannel(ide_drive_t *drive, int format, char *buf, | |
2411 | int buflen, struct request_sense *sense) | |
2412 | { | |
2413 | struct request req; | |
2414 | ||
2415 | cdrom_prepare_request(drive, &req); | |
2416 | ||
2417 | req.sense = sense; | |
2418 | req.data = buf; | |
2419 | req.data_len = buflen; | |
2420 | req.cmd[0] = GPCMD_READ_SUBCHANNEL; | |
2421 | req.cmd[1] = 2; /* MSF addressing */ | |
2422 | req.cmd[2] = 0x40; /* request subQ data */ | |
2423 | req.cmd[3] = format; | |
2424 | req.cmd[7] = (buflen >> 8); | |
2425 | req.cmd[8] = (buflen & 0xff); | |
2426 | return cdrom_queue_packet_command(drive, &req); | |
2427 | } | |
2428 | ||
2429 | /* ATAPI cdrom drives are free to select the speed you request or any slower | |
2430 | rate :-( Requesting too fast a speed will _not_ produce an error. */ | |
2431 | static int cdrom_select_speed(ide_drive_t *drive, int speed, | |
2432 | struct request_sense *sense) | |
2433 | { | |
2434 | struct request req; | |
2435 | cdrom_prepare_request(drive, &req); | |
2436 | ||
2437 | req.sense = sense; | |
2438 | if (speed == 0) | |
2439 | speed = 0xffff; /* set to max */ | |
2440 | else | |
2441 | speed *= 177; /* Nx to kbytes/s */ | |
2442 | ||
2443 | req.cmd[0] = GPCMD_SET_SPEED; | |
2444 | /* Read Drive speed in kbytes/second MSB */ | |
2445 | req.cmd[2] = (speed >> 8) & 0xff; | |
2446 | /* Read Drive speed in kbytes/second LSB */ | |
2447 | req.cmd[3] = speed & 0xff; | |
2448 | if (CDROM_CONFIG_FLAGS(drive)->cd_r || | |
2449 | CDROM_CONFIG_FLAGS(drive)->cd_rw || | |
2450 | CDROM_CONFIG_FLAGS(drive)->dvd_r) { | |
2451 | /* Write Drive speed in kbytes/second MSB */ | |
2452 | req.cmd[4] = (speed >> 8) & 0xff; | |
2453 | /* Write Drive speed in kbytes/second LSB */ | |
2454 | req.cmd[5] = speed & 0xff; | |
2455 | } | |
2456 | ||
2457 | return cdrom_queue_packet_command(drive, &req); | |
2458 | } | |
2459 | ||
2460 | static int cdrom_play_audio(ide_drive_t *drive, int lba_start, int lba_end) | |
2461 | { | |
2462 | struct request_sense sense; | |
2463 | struct request req; | |
2464 | ||
2465 | cdrom_prepare_request(drive, &req); | |
2466 | ||
2467 | req.sense = &sense; | |
2468 | req.cmd[0] = GPCMD_PLAY_AUDIO_MSF; | |
2469 | lba_to_msf(lba_start, &req.cmd[3], &req.cmd[4], &req.cmd[5]); | |
2470 | lba_to_msf(lba_end-1, &req.cmd[6], &req.cmd[7], &req.cmd[8]); | |
2471 | ||
2472 | return cdrom_queue_packet_command(drive, &req); | |
2473 | } | |
2474 | ||
2475 | static int cdrom_get_toc_entry(ide_drive_t *drive, int track, | |
2476 | struct atapi_toc_entry **ent) | |
2477 | { | |
2478 | struct cdrom_info *info = drive->driver_data; | |
2479 | struct atapi_toc *toc = info->toc; | |
2480 | int ntracks; | |
2481 | ||
2482 | /* | |
2483 | * don't serve cached data, if the toc isn't valid | |
2484 | */ | |
2485 | if (!CDROM_STATE_FLAGS(drive)->toc_valid) | |
2486 | return -EINVAL; | |
2487 | ||
2488 | /* Check validity of requested track number. */ | |
2489 | ntracks = toc->hdr.last_track - toc->hdr.first_track + 1; | |
2490 | if (toc->hdr.first_track == CDROM_LEADOUT) ntracks = 0; | |
2491 | if (track == CDROM_LEADOUT) | |
2492 | *ent = &toc->ent[ntracks]; | |
2493 | else if (track < toc->hdr.first_track || | |
2494 | track > toc->hdr.last_track) | |
2495 | return -EINVAL; | |
2496 | else | |
2497 | *ent = &toc->ent[track - toc->hdr.first_track]; | |
2498 | ||
2499 | return 0; | |
2500 | } | |
2501 | ||
2502 | /* the generic packet interface to cdrom.c */ | |
2503 | static int ide_cdrom_packet(struct cdrom_device_info *cdi, | |
2504 | struct packet_command *cgc) | |
2505 | { | |
2506 | struct request req; | |
2a91f3e5 | 2507 | ide_drive_t *drive = cdi->handle; |
1da177e4 LT |
2508 | |
2509 | if (cgc->timeout <= 0) | |
2510 | cgc->timeout = ATAPI_WAIT_PC; | |
2511 | ||
2512 | /* here we queue the commands from the uniform CD-ROM | |
2513 | layer. the packet must be complete, as we do not | |
2514 | touch it at all. */ | |
2515 | cdrom_prepare_request(drive, &req); | |
2516 | memcpy(req.cmd, cgc->cmd, CDROM_PACKET_SIZE); | |
2517 | if (cgc->sense) | |
2518 | memset(cgc->sense, 0, sizeof(struct request_sense)); | |
2519 | req.data = cgc->buffer; | |
2520 | req.data_len = cgc->buflen; | |
2521 | req.timeout = cgc->timeout; | |
2522 | ||
2523 | if (cgc->quiet) | |
4aff5e23 | 2524 | req.cmd_flags |= REQ_QUIET; |
1da177e4 LT |
2525 | |
2526 | req.sense = cgc->sense; | |
2527 | cgc->stat = cdrom_queue_packet_command(drive, &req); | |
2528 | if (!cgc->stat) | |
2529 | cgc->buflen -= req.data_len; | |
2530 | return cgc->stat; | |
2531 | } | |
2532 | ||
1da177e4 LT |
2533 | static |
2534 | int ide_cdrom_audio_ioctl (struct cdrom_device_info *cdi, | |
2535 | unsigned int cmd, void *arg) | |
2536 | ||
2537 | { | |
2a91f3e5 | 2538 | ide_drive_t *drive = cdi->handle; |
1da177e4 LT |
2539 | struct cdrom_info *info = drive->driver_data; |
2540 | int stat; | |
2541 | ||
2542 | switch (cmd) { | |
2543 | /* | |
2544 | * emulate PLAY_AUDIO_TI command with PLAY_AUDIO_10, since | |
2545 | * atapi doesn't support it | |
2546 | */ | |
2547 | case CDROMPLAYTRKIND: { | |
2548 | unsigned long lba_start, lba_end; | |
2a91f3e5 | 2549 | struct cdrom_ti *ti = arg; |
1da177e4 LT |
2550 | struct atapi_toc_entry *first_toc, *last_toc; |
2551 | ||
2552 | stat = cdrom_get_toc_entry(drive, ti->cdti_trk0, &first_toc); | |
2553 | if (stat) | |
2554 | return stat; | |
2555 | ||
2556 | stat = cdrom_get_toc_entry(drive, ti->cdti_trk1, &last_toc); | |
2557 | if (stat) | |
2558 | return stat; | |
2559 | ||
2560 | if (ti->cdti_trk1 != CDROM_LEADOUT) | |
2561 | ++last_toc; | |
2562 | lba_start = first_toc->addr.lba; | |
2563 | lba_end = last_toc->addr.lba; | |
2564 | ||
2565 | if (lba_end <= lba_start) | |
2566 | return -EINVAL; | |
2567 | ||
2568 | return cdrom_play_audio(drive, lba_start, lba_end); | |
2569 | } | |
2570 | ||
2571 | case CDROMREADTOCHDR: { | |
2a91f3e5 | 2572 | struct cdrom_tochdr *tochdr = arg; |
1da177e4 LT |
2573 | struct atapi_toc *toc; |
2574 | ||
2575 | /* Make sure our saved TOC is valid. */ | |
2576 | stat = cdrom_read_toc(drive, NULL); | |
2a91f3e5 JJ |
2577 | if (stat) |
2578 | return stat; | |
1da177e4 LT |
2579 | |
2580 | toc = info->toc; | |
2581 | tochdr->cdth_trk0 = toc->hdr.first_track; | |
2582 | tochdr->cdth_trk1 = toc->hdr.last_track; | |
2583 | ||
2584 | return 0; | |
2585 | } | |
2586 | ||
2587 | case CDROMREADTOCENTRY: { | |
2a91f3e5 | 2588 | struct cdrom_tocentry *tocentry = arg; |
1da177e4 LT |
2589 | struct atapi_toc_entry *toce; |
2590 | ||
2591 | stat = cdrom_get_toc_entry(drive, tocentry->cdte_track, &toce); | |
2a91f3e5 JJ |
2592 | if (stat) |
2593 | return stat; | |
1da177e4 LT |
2594 | |
2595 | tocentry->cdte_ctrl = toce->control; | |
2596 | tocentry->cdte_adr = toce->adr; | |
2597 | if (tocentry->cdte_format == CDROM_MSF) { | |
2598 | lba_to_msf (toce->addr.lba, | |
2599 | &tocentry->cdte_addr.msf.minute, | |
2600 | &tocentry->cdte_addr.msf.second, | |
2601 | &tocentry->cdte_addr.msf.frame); | |
2602 | } else | |
2603 | tocentry->cdte_addr.lba = toce->addr.lba; | |
2604 | ||
2605 | return 0; | |
2606 | } | |
2607 | ||
2608 | default: | |
2609 | return -EINVAL; | |
2610 | } | |
2611 | } | |
2612 | ||
2613 | static | |
2614 | int ide_cdrom_reset (struct cdrom_device_info *cdi) | |
2615 | { | |
2a91f3e5 | 2616 | ide_drive_t *drive = cdi->handle; |
1da177e4 LT |
2617 | struct request_sense sense; |
2618 | struct request req; | |
2619 | int ret; | |
2620 | ||
2621 | cdrom_prepare_request(drive, &req); | |
4aff5e23 JA |
2622 | req.cmd_type = REQ_TYPE_SPECIAL; |
2623 | req.cmd_flags = REQ_QUIET; | |
1da177e4 LT |
2624 | ret = ide_do_drive_cmd(drive, &req, ide_wait); |
2625 | ||
2626 | /* | |
2627 | * A reset will unlock the door. If it was previously locked, | |
2628 | * lock it again. | |
2629 | */ | |
2630 | if (CDROM_STATE_FLAGS(drive)->door_locked) | |
2631 | (void) cdrom_lockdoor(drive, 1, &sense); | |
2632 | ||
2633 | return ret; | |
2634 | } | |
2635 | ||
2636 | ||
2637 | static | |
2638 | int ide_cdrom_tray_move (struct cdrom_device_info *cdi, int position) | |
2639 | { | |
2a91f3e5 | 2640 | ide_drive_t *drive = cdi->handle; |
1da177e4 LT |
2641 | struct request_sense sense; |
2642 | ||
2643 | if (position) { | |
2644 | int stat = cdrom_lockdoor(drive, 0, &sense); | |
2a91f3e5 JJ |
2645 | if (stat) |
2646 | return stat; | |
1da177e4 LT |
2647 | } |
2648 | ||
2649 | return cdrom_eject(drive, !position, &sense); | |
2650 | } | |
2651 | ||
2652 | static | |
2653 | int ide_cdrom_lock_door (struct cdrom_device_info *cdi, int lock) | |
2654 | { | |
2a91f3e5 | 2655 | ide_drive_t *drive = cdi->handle; |
1da177e4 LT |
2656 | return cdrom_lockdoor(drive, lock, NULL); |
2657 | } | |
2658 | ||
9235e68b EP |
2659 | static |
2660 | int ide_cdrom_get_capabilities(ide_drive_t *drive, struct atapi_capabilities_page *cap) | |
2661 | { | |
2662 | struct cdrom_info *info = drive->driver_data; | |
2663 | struct cdrom_device_info *cdi = &info->devinfo; | |
2664 | struct packet_command cgc; | |
2665 | int stat, attempts = 3, size = sizeof(*cap); | |
2666 | ||
2667 | /* | |
2668 | * ACER50 (and others?) require the full spec length mode sense | |
2669 | * page capabilities size, but older drives break. | |
2670 | */ | |
2671 | if (!(!strcmp(drive->id->model, "ATAPI CD ROM DRIVE 50X MAX") || | |
2672 | !strcmp(drive->id->model, "WPI CDS-32X"))) | |
2673 | size -= sizeof(cap->pad); | |
2674 | ||
2675 | init_cdrom_command(&cgc, cap, size, CGC_DATA_UNKNOWN); | |
2676 | do { /* we seem to get stat=0x01,err=0x00 the first time (??) */ | |
2677 | stat = cdrom_mode_sense(cdi, &cgc, GPMODE_CAPABILITIES_PAGE, 0); | |
2678 | if (!stat) | |
2679 | break; | |
2680 | } while (--attempts); | |
2681 | return stat; | |
2682 | } | |
2683 | ||
2684 | static | |
2685 | void ide_cdrom_update_speed (ide_drive_t *drive, struct atapi_capabilities_page *cap) | |
2686 | { | |
2687 | /* The ACER/AOpen 24X cdrom has the speed fields byte-swapped */ | |
2688 | if (!drive->id->model[0] && | |
2689 | !strncmp(drive->id->fw_rev, "241N", 4)) { | |
2690 | CDROM_STATE_FLAGS(drive)->current_speed = | |
aa5dc8eb | 2691 | (le16_to_cpu(cap->curspeed) + (176/2)) / 176; |
9235e68b | 2692 | CDROM_CONFIG_FLAGS(drive)->max_speed = |
aa5dc8eb | 2693 | (le16_to_cpu(cap->maxspeed) + (176/2)) / 176; |
9235e68b EP |
2694 | } else { |
2695 | CDROM_STATE_FLAGS(drive)->current_speed = | |
aa5dc8eb | 2696 | (be16_to_cpu(cap->curspeed) + (176/2)) / 176; |
9235e68b | 2697 | CDROM_CONFIG_FLAGS(drive)->max_speed = |
aa5dc8eb | 2698 | (be16_to_cpu(cap->maxspeed) + (176/2)) / 176; |
9235e68b EP |
2699 | } |
2700 | } | |
2701 | ||
1da177e4 LT |
2702 | static |
2703 | int ide_cdrom_select_speed (struct cdrom_device_info *cdi, int speed) | |
2704 | { | |
2a91f3e5 | 2705 | ide_drive_t *drive = cdi->handle; |
1da177e4 | 2706 | struct request_sense sense; |
9235e68b | 2707 | struct atapi_capabilities_page cap; |
1da177e4 LT |
2708 | int stat; |
2709 | ||
2710 | if ((stat = cdrom_select_speed(drive, speed, &sense)) < 0) | |
2711 | return stat; | |
2712 | ||
9235e68b EP |
2713 | if (!ide_cdrom_get_capabilities(drive, &cap)) { |
2714 | ide_cdrom_update_speed(drive, &cap); | |
2715 | cdi->speed = CDROM_STATE_FLAGS(drive)->current_speed; | |
2716 | } | |
1da177e4 LT |
2717 | return 0; |
2718 | } | |
2719 | ||
2720 | /* | |
2721 | * add logic to try GET_EVENT command first to check for media and tray | |
2722 | * status. this should be supported by newer cd-r/w and all DVD etc | |
2723 | * drives | |
2724 | */ | |
2725 | static | |
2726 | int ide_cdrom_drive_status (struct cdrom_device_info *cdi, int slot_nr) | |
2727 | { | |
2a91f3e5 | 2728 | ide_drive_t *drive = cdi->handle; |
1da177e4 LT |
2729 | struct media_event_desc med; |
2730 | struct request_sense sense; | |
2731 | int stat; | |
2732 | ||
2733 | if (slot_nr != CDSL_CURRENT) | |
2734 | return -EINVAL; | |
2735 | ||
2736 | stat = cdrom_check_status(drive, &sense); | |
2737 | if (!stat || sense.sense_key == UNIT_ATTENTION) | |
2738 | return CDS_DISC_OK; | |
2739 | ||
2740 | if (!cdrom_get_media_event(cdi, &med)) { | |
2741 | if (med.media_present) | |
2742 | return CDS_DISC_OK; | |
2743 | else if (med.door_open) | |
2744 | return CDS_TRAY_OPEN; | |
2745 | else | |
2746 | return CDS_NO_DISC; | |
2747 | } | |
2748 | ||
2749 | if (sense.sense_key == NOT_READY && sense.asc == 0x04 && sense.ascq == 0x04) | |
2750 | return CDS_DISC_OK; | |
2751 | ||
2752 | /* | |
2753 | * If not using Mt Fuji extended media tray reports, | |
2754 | * just return TRAY_OPEN since ATAPI doesn't provide | |
2755 | * any other way to detect this... | |
2756 | */ | |
2757 | if (sense.sense_key == NOT_READY) { | |
dbe217af AC |
2758 | if (sense.asc == 0x3a && sense.ascq == 1) |
2759 | return CDS_NO_DISC; | |
2760 | else | |
2761 | return CDS_TRAY_OPEN; | |
1da177e4 | 2762 | } |
1da177e4 LT |
2763 | return CDS_DRIVE_NOT_READY; |
2764 | } | |
2765 | ||
2766 | static | |
2767 | int ide_cdrom_get_last_session (struct cdrom_device_info *cdi, | |
2768 | struct cdrom_multisession *ms_info) | |
2769 | { | |
2770 | struct atapi_toc *toc; | |
2a91f3e5 | 2771 | ide_drive_t *drive = cdi->handle; |
1da177e4 LT |
2772 | struct cdrom_info *info = drive->driver_data; |
2773 | struct request_sense sense; | |
2774 | int ret; | |
2775 | ||
2776 | if (!CDROM_STATE_FLAGS(drive)->toc_valid || info->toc == NULL) | |
2777 | if ((ret = cdrom_read_toc(drive, &sense))) | |
2778 | return ret; | |
2779 | ||
2780 | toc = info->toc; | |
2781 | ms_info->addr.lba = toc->last_session_lba; | |
2782 | ms_info->xa_flag = toc->xa_flag; | |
2783 | ||
2784 | return 0; | |
2785 | } | |
2786 | ||
2787 | static | |
2788 | int ide_cdrom_get_mcn (struct cdrom_device_info *cdi, | |
2789 | struct cdrom_mcn *mcn_info) | |
2790 | { | |
2791 | int stat; | |
2792 | char mcnbuf[24]; | |
2a91f3e5 | 2793 | ide_drive_t *drive = cdi->handle; |
1da177e4 LT |
2794 | |
2795 | /* get MCN */ | |
2796 | if ((stat = cdrom_read_subchannel(drive, 2, mcnbuf, sizeof (mcnbuf), NULL))) | |
2797 | return stat; | |
2798 | ||
2799 | memcpy (mcn_info->medium_catalog_number, mcnbuf+9, | |
2800 | sizeof (mcn_info->medium_catalog_number)-1); | |
2801 | mcn_info->medium_catalog_number[sizeof (mcn_info->medium_catalog_number)-1] | |
2802 | = '\0'; | |
2803 | ||
2804 | return 0; | |
2805 | } | |
2806 | ||
2807 | ||
2808 | ||
2809 | /**************************************************************************** | |
2810 | * Other driver requests (open, close, check media change). | |
2811 | */ | |
2812 | ||
2813 | static | |
2814 | int ide_cdrom_check_media_change_real (struct cdrom_device_info *cdi, | |
2815 | int slot_nr) | |
2816 | { | |
2a91f3e5 | 2817 | ide_drive_t *drive = cdi->handle; |
1da177e4 LT |
2818 | int retval; |
2819 | ||
2820 | if (slot_nr == CDSL_CURRENT) { | |
2821 | (void) cdrom_check_status(drive, NULL); | |
2822 | retval = CDROM_STATE_FLAGS(drive)->media_changed; | |
2823 | CDROM_STATE_FLAGS(drive)->media_changed = 0; | |
2824 | return retval; | |
2825 | } else { | |
2826 | return -EINVAL; | |
2827 | } | |
2828 | } | |
2829 | ||
2830 | ||
2831 | static | |
2832 | int ide_cdrom_open_real (struct cdrom_device_info *cdi, int purpose) | |
2833 | { | |
2834 | return 0; | |
2835 | } | |
2836 | ||
2837 | /* | |
2838 | * Close down the device. Invalidate all cached blocks. | |
2839 | */ | |
2840 | ||
2841 | static | |
2842 | void ide_cdrom_release_real (struct cdrom_device_info *cdi) | |
2843 | { | |
2844 | ide_drive_t *drive = cdi->handle; | |
2845 | ||
2846 | if (!cdi->use_count) | |
2847 | CDROM_STATE_FLAGS(drive)->toc_valid = 0; | |
2848 | } | |
2849 | ||
2850 | ||
2851 | ||
2852 | /**************************************************************************** | |
2853 | * Device initialization. | |
2854 | */ | |
2855 | static struct cdrom_device_ops ide_cdrom_dops = { | |
2856 | .open = ide_cdrom_open_real, | |
2857 | .release = ide_cdrom_release_real, | |
2858 | .drive_status = ide_cdrom_drive_status, | |
2859 | .media_changed = ide_cdrom_check_media_change_real, | |
2860 | .tray_move = ide_cdrom_tray_move, | |
2861 | .lock_door = ide_cdrom_lock_door, | |
2862 | .select_speed = ide_cdrom_select_speed, | |
2863 | .get_last_session = ide_cdrom_get_last_session, | |
2864 | .get_mcn = ide_cdrom_get_mcn, | |
2865 | .reset = ide_cdrom_reset, | |
2866 | .audio_ioctl = ide_cdrom_audio_ioctl, | |
1da177e4 LT |
2867 | .capability = CDC_CLOSE_TRAY | CDC_OPEN_TRAY | CDC_LOCK | |
2868 | CDC_SELECT_SPEED | CDC_SELECT_DISC | | |
2869 | CDC_MULTI_SESSION | CDC_MCN | | |
2870 | CDC_MEDIA_CHANGED | CDC_PLAY_AUDIO | CDC_RESET | | |
6a2900b6 | 2871 | CDC_DRIVE_STATUS | CDC_CD_R | |
1da177e4 LT |
2872 | CDC_CD_RW | CDC_DVD | CDC_DVD_R| CDC_DVD_RAM | |
2873 | CDC_GENERIC_PACKET | CDC_MO_DRIVE | CDC_MRW | | |
2874 | CDC_MRW_W | CDC_RAM, | |
2875 | .generic_packet = ide_cdrom_packet, | |
2876 | }; | |
2877 | ||
2878 | static int ide_cdrom_register (ide_drive_t *drive, int nslots) | |
2879 | { | |
2880 | struct cdrom_info *info = drive->driver_data; | |
2881 | struct cdrom_device_info *devinfo = &info->devinfo; | |
2882 | ||
2883 | devinfo->ops = &ide_cdrom_dops; | |
2884 | devinfo->mask = 0; | |
2885 | devinfo->speed = CDROM_STATE_FLAGS(drive)->current_speed; | |
2886 | devinfo->capacity = nslots; | |
2a91f3e5 | 2887 | devinfo->handle = drive; |
1da177e4 LT |
2888 | strcpy(devinfo->name, drive->name); |
2889 | ||
2890 | /* set capability mask to match the probe. */ | |
2891 | if (!CDROM_CONFIG_FLAGS(drive)->cd_r) | |
2892 | devinfo->mask |= CDC_CD_R; | |
2893 | if (!CDROM_CONFIG_FLAGS(drive)->cd_rw) | |
2894 | devinfo->mask |= CDC_CD_RW; | |
2895 | if (!CDROM_CONFIG_FLAGS(drive)->dvd) | |
2896 | devinfo->mask |= CDC_DVD; | |
2897 | if (!CDROM_CONFIG_FLAGS(drive)->dvd_r) | |
2898 | devinfo->mask |= CDC_DVD_R; | |
2899 | if (!CDROM_CONFIG_FLAGS(drive)->dvd_ram) | |
2900 | devinfo->mask |= CDC_DVD_RAM; | |
2901 | if (!CDROM_CONFIG_FLAGS(drive)->is_changer) | |
2902 | devinfo->mask |= CDC_SELECT_DISC; | |
2903 | if (!CDROM_CONFIG_FLAGS(drive)->audio_play) | |
2904 | devinfo->mask |= CDC_PLAY_AUDIO; | |
2905 | if (!CDROM_CONFIG_FLAGS(drive)->close_tray) | |
2906 | devinfo->mask |= CDC_CLOSE_TRAY; | |
2907 | if (!CDROM_CONFIG_FLAGS(drive)->mo_drive) | |
2908 | devinfo->mask |= CDC_MO_DRIVE; | |
c0400dc5 AB |
2909 | if (!CDROM_CONFIG_FLAGS(drive)->ram) |
2910 | devinfo->mask |= CDC_RAM; | |
1da177e4 | 2911 | |
3cbd814e BZ |
2912 | if (CDROM_CONFIG_FLAGS(drive)->no_speed_select) |
2913 | devinfo->mask |= CDC_SELECT_SPEED; | |
2914 | ||
1da177e4 LT |
2915 | devinfo->disk = info->disk; |
2916 | return register_cdrom(devinfo); | |
2917 | } | |
2918 | ||
1da177e4 LT |
2919 | static |
2920 | int ide_cdrom_probe_capabilities (ide_drive_t *drive) | |
2921 | { | |
2922 | struct cdrom_info *info = drive->driver_data; | |
2923 | struct cdrom_device_info *cdi = &info->devinfo; | |
2924 | struct atapi_capabilities_page cap; | |
2925 | int nslots = 1; | |
2926 | ||
2927 | if (drive->media == ide_optical) { | |
2928 | CDROM_CONFIG_FLAGS(drive)->mo_drive = 1; | |
2929 | CDROM_CONFIG_FLAGS(drive)->ram = 1; | |
2930 | printk(KERN_ERR "%s: ATAPI magneto-optical drive\n", drive->name); | |
2931 | return nslots; | |
2932 | } | |
2933 | ||
2934 | if (CDROM_CONFIG_FLAGS(drive)->nec260 || | |
2935 | !strcmp(drive->id->model,"STINGRAY 8422 IDE 8X CD-ROM 7-27-95")) { | |
2936 | CDROM_CONFIG_FLAGS(drive)->no_eject = 0; | |
2937 | CDROM_CONFIG_FLAGS(drive)->audio_play = 1; | |
2938 | return nslots; | |
2939 | } | |
2940 | ||
2941 | /* | |
2942 | * we have to cheat a little here. the packet will eventually | |
2943 | * be queued with ide_cdrom_packet(), which extracts the | |
2944 | * drive from cdi->handle. Since this device hasn't been | |
2945 | * registered with the Uniform layer yet, it can't do this. | |
2946 | * Same goes for cdi->ops. | |
2947 | */ | |
2a91f3e5 | 2948 | cdi->handle = drive; |
1da177e4 LT |
2949 | cdi->ops = &ide_cdrom_dops; |
2950 | ||
2951 | if (ide_cdrom_get_capabilities(drive, &cap)) | |
2952 | return 0; | |
2953 | ||
2954 | if (cap.lock == 0) | |
2955 | CDROM_CONFIG_FLAGS(drive)->no_doorlock = 1; | |
2956 | if (cap.eject) | |
2957 | CDROM_CONFIG_FLAGS(drive)->no_eject = 0; | |
2958 | if (cap.cd_r_write) | |
2959 | CDROM_CONFIG_FLAGS(drive)->cd_r = 1; | |
2960 | if (cap.cd_rw_write) { | |
2961 | CDROM_CONFIG_FLAGS(drive)->cd_rw = 1; | |
2962 | CDROM_CONFIG_FLAGS(drive)->ram = 1; | |
2963 | } | |
2964 | if (cap.test_write) | |
2965 | CDROM_CONFIG_FLAGS(drive)->test_write = 1; | |
2966 | if (cap.dvd_ram_read || cap.dvd_r_read || cap.dvd_rom) | |
2967 | CDROM_CONFIG_FLAGS(drive)->dvd = 1; | |
2968 | if (cap.dvd_ram_write) { | |
2969 | CDROM_CONFIG_FLAGS(drive)->dvd_ram = 1; | |
2970 | CDROM_CONFIG_FLAGS(drive)->ram = 1; | |
2971 | } | |
2972 | if (cap.dvd_r_write) | |
2973 | CDROM_CONFIG_FLAGS(drive)->dvd_r = 1; | |
2974 | if (cap.audio_play) | |
2975 | CDROM_CONFIG_FLAGS(drive)->audio_play = 1; | |
2976 | if (cap.mechtype == mechtype_caddy || cap.mechtype == mechtype_popup) | |
2977 | CDROM_CONFIG_FLAGS(drive)->close_tray = 0; | |
2978 | ||
2979 | /* Some drives used by Apple don't advertise audio play | |
2980 | * but they do support reading TOC & audio datas | |
2981 | */ | |
2982 | if (strcmp(drive->id->model, "MATSHITADVD-ROM SR-8187") == 0 || | |
2983 | strcmp(drive->id->model, "MATSHITADVD-ROM SR-8186") == 0 || | |
2984 | strcmp(drive->id->model, "MATSHITADVD-ROM SR-8176") == 0 || | |
2985 | strcmp(drive->id->model, "MATSHITADVD-ROM SR-8174") == 0) | |
2986 | CDROM_CONFIG_FLAGS(drive)->audio_play = 1; | |
2987 | ||
2988 | #if ! STANDARD_ATAPI | |
2989 | if (cdi->sanyo_slot > 0) { | |
2990 | CDROM_CONFIG_FLAGS(drive)->is_changer = 1; | |
2991 | nslots = 3; | |
2992 | } | |
2993 | ||
2994 | else | |
2995 | #endif /* not STANDARD_ATAPI */ | |
2996 | if (cap.mechtype == mechtype_individual_changer || | |
2997 | cap.mechtype == mechtype_cartridge_changer) { | |
2998 | if ((nslots = cdrom_number_of_slots(cdi)) > 1) { | |
2999 | CDROM_CONFIG_FLAGS(drive)->is_changer = 1; | |
3000 | CDROM_CONFIG_FLAGS(drive)->supp_disc_present = 1; | |
3001 | } | |
3002 | } | |
3003 | ||
9235e68b | 3004 | ide_cdrom_update_speed(drive, &cap); |
1da177e4 LT |
3005 | /* don't print speed if the drive reported 0. |
3006 | */ | |
3007 | printk(KERN_INFO "%s: ATAPI", drive->name); | |
3008 | if (CDROM_CONFIG_FLAGS(drive)->max_speed) | |
3009 | printk(" %dX", CDROM_CONFIG_FLAGS(drive)->max_speed); | |
3010 | printk(" %s", CDROM_CONFIG_FLAGS(drive)->dvd ? "DVD-ROM" : "CD-ROM"); | |
3011 | ||
3012 | if (CDROM_CONFIG_FLAGS(drive)->dvd_r|CDROM_CONFIG_FLAGS(drive)->dvd_ram) | |
3013 | printk(" DVD%s%s", | |
3014 | (CDROM_CONFIG_FLAGS(drive)->dvd_r)? "-R" : "", | |
3015 | (CDROM_CONFIG_FLAGS(drive)->dvd_ram)? "-RAM" : ""); | |
3016 | ||
3017 | if (CDROM_CONFIG_FLAGS(drive)->cd_r|CDROM_CONFIG_FLAGS(drive)->cd_rw) | |
3018 | printk(" CD%s%s", | |
3019 | (CDROM_CONFIG_FLAGS(drive)->cd_r)? "-R" : "", | |
3020 | (CDROM_CONFIG_FLAGS(drive)->cd_rw)? "/RW" : ""); | |
3021 | ||
3022 | if (CDROM_CONFIG_FLAGS(drive)->is_changer) | |
3023 | printk(" changer w/%d slots", nslots); | |
3024 | else | |
3025 | printk(" drive"); | |
3026 | ||
3ab7efe8 | 3027 | printk(KERN_CONT ", %dkB Cache\n", be16_to_cpu(cap.buffer_size)); |
1da177e4 LT |
3028 | |
3029 | return nslots; | |
3030 | } | |
3031 | ||
7662d046 | 3032 | #ifdef CONFIG_IDE_PROC_FS |
1da177e4 LT |
3033 | static void ide_cdrom_add_settings(ide_drive_t *drive) |
3034 | { | |
1497943e | 3035 | ide_add_setting(drive, "dsc_overlap", SETTING_RW, TYPE_BYTE, 0, 1, 1, 1, &drive->dsc_overlap, NULL); |
1da177e4 | 3036 | } |
7662d046 BZ |
3037 | #else |
3038 | static inline void ide_cdrom_add_settings(ide_drive_t *drive) { ; } | |
3039 | #endif | |
1da177e4 LT |
3040 | |
3041 | /* | |
3042 | * standard prep_rq_fn that builds 10 byte cmds | |
3043 | */ | |
165125e1 | 3044 | static int ide_cdrom_prep_fs(struct request_queue *q, struct request *rq) |
1da177e4 LT |
3045 | { |
3046 | int hard_sect = queue_hardsect_size(q); | |
3047 | long block = (long)rq->hard_sector / (hard_sect >> 9); | |
3048 | unsigned long blocks = rq->hard_nr_sectors / (hard_sect >> 9); | |
3049 | ||
3050 | memset(rq->cmd, 0, sizeof(rq->cmd)); | |
3051 | ||
3052 | if (rq_data_dir(rq) == READ) | |
3053 | rq->cmd[0] = GPCMD_READ_10; | |
3054 | else | |
3055 | rq->cmd[0] = GPCMD_WRITE_10; | |
3056 | ||
3057 | /* | |
3058 | * fill in lba | |
3059 | */ | |
3060 | rq->cmd[2] = (block >> 24) & 0xff; | |
3061 | rq->cmd[3] = (block >> 16) & 0xff; | |
3062 | rq->cmd[4] = (block >> 8) & 0xff; | |
3063 | rq->cmd[5] = block & 0xff; | |
3064 | ||
3065 | /* | |
3066 | * and transfer length | |
3067 | */ | |
3068 | rq->cmd[7] = (blocks >> 8) & 0xff; | |
3069 | rq->cmd[8] = blocks & 0xff; | |
3070 | rq->cmd_len = 10; | |
3071 | return BLKPREP_OK; | |
3072 | } | |
3073 | ||
3074 | /* | |
3075 | * Most of the SCSI commands are supported directly by ATAPI devices. | |
3076 | * This transform handles the few exceptions. | |
3077 | */ | |
3078 | static int ide_cdrom_prep_pc(struct request *rq) | |
3079 | { | |
3080 | u8 *c = rq->cmd; | |
3081 | ||
3082 | /* | |
3083 | * Transform 6-byte read/write commands to the 10-byte version | |
3084 | */ | |
3085 | if (c[0] == READ_6 || c[0] == WRITE_6) { | |
3086 | c[8] = c[4]; | |
3087 | c[5] = c[3]; | |
3088 | c[4] = c[2]; | |
3089 | c[3] = c[1] & 0x1f; | |
3090 | c[2] = 0; | |
3091 | c[1] &= 0xe0; | |
3092 | c[0] += (READ_10 - READ_6); | |
3093 | rq->cmd_len = 10; | |
3094 | return BLKPREP_OK; | |
3095 | } | |
3096 | ||
3097 | /* | |
3098 | * it's silly to pretend we understand 6-byte sense commands, just | |
3099 | * reject with ILLEGAL_REQUEST and the caller should take the | |
3100 | * appropriate action | |
3101 | */ | |
3102 | if (c[0] == MODE_SENSE || c[0] == MODE_SELECT) { | |
3103 | rq->errors = ILLEGAL_REQUEST; | |
3104 | return BLKPREP_KILL; | |
3105 | } | |
3106 | ||
3107 | return BLKPREP_OK; | |
3108 | } | |
3109 | ||
165125e1 | 3110 | static int ide_cdrom_prep_fn(struct request_queue *q, struct request *rq) |
1da177e4 | 3111 | { |
4aff5e23 | 3112 | if (blk_fs_request(rq)) |
1da177e4 | 3113 | return ide_cdrom_prep_fs(q, rq); |
4aff5e23 | 3114 | else if (blk_pc_request(rq)) |
1da177e4 LT |
3115 | return ide_cdrom_prep_pc(rq); |
3116 | ||
3117 | return 0; | |
3118 | } | |
3119 | ||
3120 | static | |
3121 | int ide_cdrom_setup (ide_drive_t *drive) | |
3122 | { | |
3123 | struct cdrom_info *info = drive->driver_data; | |
3124 | struct cdrom_device_info *cdi = &info->devinfo; | |
3125 | int nslots; | |
3126 | ||
3127 | blk_queue_prep_rq(drive->queue, ide_cdrom_prep_fn); | |
3128 | blk_queue_dma_alignment(drive->queue, 31); | |
3129 | drive->queue->unplug_delay = (1 * HZ) / 1000; | |
3130 | if (!drive->queue->unplug_delay) | |
3131 | drive->queue->unplug_delay = 1; | |
3132 | ||
3133 | drive->special.all = 0; | |
3134 | ||
3135 | CDROM_STATE_FLAGS(drive)->media_changed = 1; | |
3136 | CDROM_STATE_FLAGS(drive)->toc_valid = 0; | |
3137 | CDROM_STATE_FLAGS(drive)->door_locked = 0; | |
3138 | ||
3139 | #if NO_DOOR_LOCKING | |
3140 | CDROM_CONFIG_FLAGS(drive)->no_doorlock = 1; | |
3141 | #else | |
3142 | CDROM_CONFIG_FLAGS(drive)->no_doorlock = 0; | |
3143 | #endif | |
3144 | ||
3145 | CDROM_CONFIG_FLAGS(drive)->drq_interrupt = ((drive->id->config & 0x0060) == 0x20); | |
3146 | CDROM_CONFIG_FLAGS(drive)->is_changer = 0; | |
3147 | CDROM_CONFIG_FLAGS(drive)->cd_r = 0; | |
3148 | CDROM_CONFIG_FLAGS(drive)->cd_rw = 0; | |
3149 | CDROM_CONFIG_FLAGS(drive)->test_write = 0; | |
3150 | CDROM_CONFIG_FLAGS(drive)->dvd = 0; | |
3151 | CDROM_CONFIG_FLAGS(drive)->dvd_r = 0; | |
3152 | CDROM_CONFIG_FLAGS(drive)->dvd_ram = 0; | |
3153 | CDROM_CONFIG_FLAGS(drive)->no_eject = 1; | |
3154 | CDROM_CONFIG_FLAGS(drive)->supp_disc_present = 0; | |
3155 | CDROM_CONFIG_FLAGS(drive)->audio_play = 0; | |
3156 | CDROM_CONFIG_FLAGS(drive)->close_tray = 1; | |
3157 | ||
3158 | /* limit transfer size per interrupt. */ | |
3159 | CDROM_CONFIG_FLAGS(drive)->limit_nframes = 0; | |
3160 | /* a testament to the nice quality of Samsung drives... */ | |
3161 | if (!strcmp(drive->id->model, "SAMSUNG CD-ROM SCR-2430")) | |
3162 | CDROM_CONFIG_FLAGS(drive)->limit_nframes = 1; | |
3163 | else if (!strcmp(drive->id->model, "SAMSUNG CD-ROM SCR-2432")) | |
3164 | CDROM_CONFIG_FLAGS(drive)->limit_nframes = 1; | |
3165 | /* the 3231 model does not support the SET_CD_SPEED command */ | |
3166 | else if (!strcmp(drive->id->model, "SAMSUNG CD-ROM SCR-3231")) | |
3cbd814e | 3167 | CDROM_CONFIG_FLAGS(drive)->no_speed_select = 1; |
1da177e4 LT |
3168 | |
3169 | #if ! STANDARD_ATAPI | |
3170 | /* by default Sanyo 3 CD changer support is turned off and | |
3171 | ATAPI Rev 2.2+ standard support for CD changers is used */ | |
3172 | cdi->sanyo_slot = 0; | |
3173 | ||
3174 | CDROM_CONFIG_FLAGS(drive)->nec260 = 0; | |
3175 | CDROM_CONFIG_FLAGS(drive)->toctracks_as_bcd = 0; | |
3176 | CDROM_CONFIG_FLAGS(drive)->tocaddr_as_bcd = 0; | |
3177 | CDROM_CONFIG_FLAGS(drive)->playmsf_as_bcd = 0; | |
3178 | CDROM_CONFIG_FLAGS(drive)->subchan_as_bcd = 0; | |
3179 | ||
3180 | if (strcmp (drive->id->model, "V003S0DS") == 0 && | |
3181 | drive->id->fw_rev[4] == '1' && | |
3182 | drive->id->fw_rev[6] <= '2') { | |
3183 | /* Vertos 300. | |
3184 | Some versions of this drive like to talk BCD. */ | |
3185 | CDROM_CONFIG_FLAGS(drive)->toctracks_as_bcd = 1; | |
3186 | CDROM_CONFIG_FLAGS(drive)->tocaddr_as_bcd = 1; | |
3187 | CDROM_CONFIG_FLAGS(drive)->playmsf_as_bcd = 1; | |
3188 | CDROM_CONFIG_FLAGS(drive)->subchan_as_bcd = 1; | |
3189 | } | |
3190 | ||
3191 | else if (strcmp (drive->id->model, "V006E0DS") == 0 && | |
3192 | drive->id->fw_rev[4] == '1' && | |
3193 | drive->id->fw_rev[6] <= '2') { | |
3194 | /* Vertos 600 ESD. */ | |
3195 | CDROM_CONFIG_FLAGS(drive)->toctracks_as_bcd = 1; | |
3196 | } | |
3197 | else if (strcmp(drive->id->model, "NEC CD-ROM DRIVE:260") == 0 && | |
3198 | strncmp(drive->id->fw_rev, "1.01", 4) == 0) { /* FIXME */ | |
3199 | /* Old NEC260 (not R). | |
3200 | This drive was released before the 1.2 version | |
3201 | of the spec. */ | |
3202 | CDROM_CONFIG_FLAGS(drive)->tocaddr_as_bcd = 1; | |
3203 | CDROM_CONFIG_FLAGS(drive)->playmsf_as_bcd = 1; | |
3204 | CDROM_CONFIG_FLAGS(drive)->subchan_as_bcd = 1; | |
3205 | CDROM_CONFIG_FLAGS(drive)->nec260 = 1; | |
3206 | } | |
3207 | else if (strcmp(drive->id->model, "WEARNES CDD-120") == 0 && | |
3208 | strncmp(drive->id->fw_rev, "A1.1", 4) == 0) { /* FIXME */ | |
3209 | /* Wearnes */ | |
3210 | CDROM_CONFIG_FLAGS(drive)->playmsf_as_bcd = 1; | |
3211 | CDROM_CONFIG_FLAGS(drive)->subchan_as_bcd = 1; | |
3212 | } | |
3213 | /* Sanyo 3 CD changer uses a non-standard command | |
3214 | for CD changing */ | |
3215 | else if ((strcmp(drive->id->model, "CD-ROM CDR-C3 G") == 0) || | |
3216 | (strcmp(drive->id->model, "CD-ROM CDR-C3G") == 0) || | |
3217 | (strcmp(drive->id->model, "CD-ROM CDR_C36") == 0)) { | |
3218 | /* uses CD in slot 0 when value is set to 3 */ | |
3219 | cdi->sanyo_slot = 3; | |
3220 | } | |
3221 | #endif /* not STANDARD_ATAPI */ | |
3222 | ||
3223 | info->toc = NULL; | |
3224 | info->buffer = NULL; | |
3225 | info->sector_buffered = 0; | |
3226 | info->nsectors_buffered = 0; | |
3227 | info->changer_info = NULL; | |
3228 | info->last_block = 0; | |
3229 | info->start_seek = 0; | |
3230 | ||
3231 | nslots = ide_cdrom_probe_capabilities (drive); | |
3232 | ||
3233 | /* | |
3234 | * set correct block size | |
3235 | */ | |
3236 | blk_queue_hardsect_size(drive->queue, CD_FRAMESIZE); | |
3237 | ||
3238 | if (drive->autotune == IDE_TUNE_DEFAULT || | |
3239 | drive->autotune == IDE_TUNE_AUTO) | |
3240 | drive->dsc_overlap = (drive->next != drive); | |
1da177e4 LT |
3241 | |
3242 | if (ide_cdrom_register(drive, nslots)) { | |
3243 | printk (KERN_ERR "%s: ide_cdrom_setup failed to register device with the cdrom driver.\n", drive->name); | |
3244 | info->devinfo.handle = NULL; | |
3245 | return 1; | |
3246 | } | |
3247 | ide_cdrom_add_settings(drive); | |
3248 | return 0; | |
3249 | } | |
3250 | ||
ecfd80e4 | 3251 | #ifdef CONFIG_IDE_PROC_FS |
1da177e4 LT |
3252 | static |
3253 | sector_t ide_cdrom_capacity (ide_drive_t *drive) | |
3254 | { | |
3255 | unsigned long capacity, sectors_per_frame; | |
3256 | ||
3257 | if (cdrom_read_capacity(drive, &capacity, §ors_per_frame, NULL)) | |
3258 | return 0; | |
3259 | ||
3260 | return capacity * sectors_per_frame; | |
3261 | } | |
d97b3214 | 3262 | #endif |
1da177e4 | 3263 | |
4031bbe4 | 3264 | static void ide_cd_remove(ide_drive_t *drive) |
1da177e4 LT |
3265 | { |
3266 | struct cdrom_info *info = drive->driver_data; | |
3267 | ||
7662d046 | 3268 | ide_proc_unregister_driver(drive, info->driver); |
1da177e4 LT |
3269 | |
3270 | del_gendisk(info->disk); | |
3271 | ||
3272 | ide_cd_put(info); | |
1da177e4 LT |
3273 | } |
3274 | ||
3275 | static void ide_cd_release(struct kref *kref) | |
3276 | { | |
3277 | struct cdrom_info *info = to_ide_cd(kref); | |
3278 | struct cdrom_device_info *devinfo = &info->devinfo; | |
3279 | ide_drive_t *drive = info->drive; | |
3280 | struct gendisk *g = info->disk; | |
3281 | ||
6044ec88 JJ |
3282 | kfree(info->buffer); |
3283 | kfree(info->toc); | |
3284 | kfree(info->changer_info); | |
1da177e4 LT |
3285 | if (devinfo->handle == drive && unregister_cdrom(devinfo)) |
3286 | printk(KERN_ERR "%s: %s failed to unregister device from the cdrom " | |
3287 | "driver.\n", __FUNCTION__, drive->name); | |
3288 | drive->dsc_overlap = 0; | |
3289 | drive->driver_data = NULL; | |
3290 | blk_queue_prep_rq(drive->queue, NULL); | |
3291 | g->private_data = NULL; | |
3292 | put_disk(g); | |
3293 | kfree(info); | |
3294 | } | |
3295 | ||
4031bbe4 | 3296 | static int ide_cd_probe(ide_drive_t *); |
1da177e4 | 3297 | |
ecfd80e4 | 3298 | #ifdef CONFIG_IDE_PROC_FS |
1da177e4 LT |
3299 | static int proc_idecd_read_capacity |
3300 | (char *page, char **start, off_t off, int count, int *eof, void *data) | |
3301 | { | |
2a91f3e5 | 3302 | ide_drive_t *drive = data; |
1da177e4 LT |
3303 | int len; |
3304 | ||
3305 | len = sprintf(page,"%llu\n", (long long)ide_cdrom_capacity(drive)); | |
3306 | PROC_IDE_READ_RETURN(page,start,off,count,eof,len); | |
3307 | } | |
3308 | ||
3309 | static ide_proc_entry_t idecd_proc[] = { | |
3310 | { "capacity", S_IFREG|S_IRUGO, proc_idecd_read_capacity, NULL }, | |
3311 | { NULL, 0, NULL, NULL } | |
3312 | }; | |
1da177e4 LT |
3313 | #endif |
3314 | ||
3315 | static ide_driver_t ide_cdrom_driver = { | |
8604affd | 3316 | .gen_driver = { |
4ef3b8f4 | 3317 | .owner = THIS_MODULE, |
8604affd BZ |
3318 | .name = "ide-cdrom", |
3319 | .bus = &ide_bus_type, | |
8604affd | 3320 | }, |
4031bbe4 RK |
3321 | .probe = ide_cd_probe, |
3322 | .remove = ide_cd_remove, | |
1da177e4 LT |
3323 | .version = IDECD_VERSION, |
3324 | .media = ide_cdrom, | |
1da177e4 | 3325 | .supports_dsc_overlap = 1, |
1da177e4 LT |
3326 | .do_request = ide_do_rw_cdrom, |
3327 | .end_request = ide_end_request, | |
3328 | .error = __ide_error, | |
3329 | .abort = __ide_abort, | |
7662d046 | 3330 | #ifdef CONFIG_IDE_PROC_FS |
1da177e4 | 3331 | .proc = idecd_proc, |
7662d046 | 3332 | #endif |
1da177e4 LT |
3333 | }; |
3334 | ||
3335 | static int idecd_open(struct inode * inode, struct file * file) | |
3336 | { | |
3337 | struct gendisk *disk = inode->i_bdev->bd_disk; | |
3338 | struct cdrom_info *info; | |
1da177e4 LT |
3339 | int rc = -ENOMEM; |
3340 | ||
3341 | if (!(info = ide_cd_get(disk))) | |
3342 | return -ENXIO; | |
3343 | ||
1da177e4 | 3344 | if (!info->buffer) |
c94964a4 BZ |
3345 | info->buffer = kmalloc(SECTOR_BUFFER_SIZE, GFP_KERNEL|__GFP_REPEAT); |
3346 | ||
3347 | if (info->buffer) | |
3348 | rc = cdrom_open(&info->devinfo, inode, file); | |
1da177e4 LT |
3349 | |
3350 | if (rc < 0) | |
3351 | ide_cd_put(info); | |
3352 | ||
3353 | return rc; | |
3354 | } | |
3355 | ||
3356 | static int idecd_release(struct inode * inode, struct file * file) | |
3357 | { | |
3358 | struct gendisk *disk = inode->i_bdev->bd_disk; | |
3359 | struct cdrom_info *info = ide_cd_g(disk); | |
1da177e4 LT |
3360 | |
3361 | cdrom_release (&info->devinfo, file); | |
1da177e4 LT |
3362 | |
3363 | ide_cd_put(info); | |
3364 | ||
3365 | return 0; | |
3366 | } | |
3367 | ||
6a2900b6 CH |
3368 | static int idecd_set_spindown(struct cdrom_device_info *cdi, unsigned long arg) |
3369 | { | |
3370 | struct packet_command cgc; | |
3371 | char buffer[16]; | |
3372 | int stat; | |
3373 | char spindown; | |
3374 | ||
3375 | if (copy_from_user(&spindown, (void __user *)arg, sizeof(char))) | |
3376 | return -EFAULT; | |
3377 | ||
3378 | init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_UNKNOWN); | |
3379 | ||
3380 | stat = cdrom_mode_sense(cdi, &cgc, GPMODE_CDROM_PAGE, 0); | |
3381 | if (stat) | |
3382 | return stat; | |
3383 | ||
3384 | buffer[11] = (buffer[11] & 0xf0) | (spindown & 0x0f); | |
3385 | return cdrom_mode_select(cdi, &cgc); | |
3386 | } | |
3387 | ||
3388 | static int idecd_get_spindown(struct cdrom_device_info *cdi, unsigned long arg) | |
3389 | { | |
3390 | struct packet_command cgc; | |
3391 | char buffer[16]; | |
3392 | int stat; | |
3393 | char spindown; | |
3394 | ||
3395 | init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_UNKNOWN); | |
3396 | ||
3397 | stat = cdrom_mode_sense(cdi, &cgc, GPMODE_CDROM_PAGE, 0); | |
3398 | if (stat) | |
3399 | return stat; | |
3400 | ||
3401 | spindown = buffer[11] & 0x0f; | |
3402 | if (copy_to_user((void __user *)arg, &spindown, sizeof (char))) | |
3403 | return -EFAULT; | |
3404 | return 0; | |
3405 | } | |
3406 | ||
1da177e4 LT |
3407 | static int idecd_ioctl (struct inode *inode, struct file *file, |
3408 | unsigned int cmd, unsigned long arg) | |
3409 | { | |
3410 | struct block_device *bdev = inode->i_bdev; | |
3411 | struct cdrom_info *info = ide_cd_g(bdev->bd_disk); | |
3412 | int err; | |
3413 | ||
6a2900b6 CH |
3414 | switch (cmd) { |
3415 | case CDROMSETSPINDOWN: | |
3416 | return idecd_set_spindown(&info->devinfo, arg); | |
3417 | case CDROMGETSPINDOWN: | |
3418 | return idecd_get_spindown(&info->devinfo, arg); | |
3419 | default: | |
3420 | break; | |
3421 | } | |
3422 | ||
3423 | err = generic_ide_ioctl(info->drive, file, bdev, cmd, arg); | |
1da177e4 LT |
3424 | if (err == -EINVAL) |
3425 | err = cdrom_ioctl(file, &info->devinfo, inode, cmd, arg); | |
3426 | ||
3427 | return err; | |
3428 | } | |
3429 | ||
3430 | static int idecd_media_changed(struct gendisk *disk) | |
3431 | { | |
3432 | struct cdrom_info *info = ide_cd_g(disk); | |
3433 | return cdrom_media_changed(&info->devinfo); | |
3434 | } | |
3435 | ||
3436 | static int idecd_revalidate_disk(struct gendisk *disk) | |
3437 | { | |
3438 | struct cdrom_info *info = ide_cd_g(disk); | |
3439 | struct request_sense sense; | |
3440 | cdrom_read_toc(info->drive, &sense); | |
3441 | return 0; | |
3442 | } | |
3443 | ||
3444 | static struct block_device_operations idecd_ops = { | |
3445 | .owner = THIS_MODULE, | |
3446 | .open = idecd_open, | |
3447 | .release = idecd_release, | |
3448 | .ioctl = idecd_ioctl, | |
3449 | .media_changed = idecd_media_changed, | |
3450 | .revalidate_disk= idecd_revalidate_disk | |
3451 | }; | |
3452 | ||
3453 | /* options */ | |
3454 | static char *ignore = NULL; | |
3455 | ||
3456 | module_param(ignore, charp, 0400); | |
3457 | MODULE_DESCRIPTION("ATAPI CD-ROM Driver"); | |
3458 | ||
4031bbe4 | 3459 | static int ide_cd_probe(ide_drive_t *drive) |
1da177e4 LT |
3460 | { |
3461 | struct cdrom_info *info; | |
3462 | struct gendisk *g; | |
3463 | struct request_sense sense; | |
3464 | ||
3465 | if (!strstr("ide-cdrom", drive->driver_req)) | |
3466 | goto failed; | |
3467 | if (!drive->present) | |
3468 | goto failed; | |
3469 | if (drive->media != ide_cdrom && drive->media != ide_optical) | |
3470 | goto failed; | |
3471 | /* skip drives that we were told to ignore */ | |
3472 | if (ignore != NULL) { | |
3473 | if (strstr(ignore, drive->name)) { | |
3474 | printk(KERN_INFO "ide-cd: ignoring drive %s\n", drive->name); | |
3475 | goto failed; | |
3476 | } | |
3477 | } | |
3478 | if (drive->scsi) { | |
3479 | printk(KERN_INFO "ide-cd: passing drive %s to ide-scsi emulation.\n", drive->name); | |
3480 | goto failed; | |
3481 | } | |
f5e3c2fa | 3482 | info = kzalloc(sizeof(struct cdrom_info), GFP_KERNEL); |
1da177e4 LT |
3483 | if (info == NULL) { |
3484 | printk(KERN_ERR "%s: Can't allocate a cdrom structure\n", drive->name); | |
3485 | goto failed; | |
3486 | } | |
3487 | ||
3488 | g = alloc_disk(1 << PARTN_BITS); | |
3489 | if (!g) | |
3490 | goto out_free_cd; | |
3491 | ||
3492 | ide_init_disk(g, drive); | |
3493 | ||
7662d046 | 3494 | ide_proc_register_driver(drive, &ide_cdrom_driver); |
8604affd | 3495 | |
1da177e4 LT |
3496 | kref_init(&info->kref); |
3497 | ||
3498 | info->drive = drive; | |
3499 | info->driver = &ide_cdrom_driver; | |
3500 | info->disk = g; | |
3501 | ||
3502 | g->private_data = &info->driver; | |
3503 | ||
3504 | drive->driver_data = info; | |
3505 | ||
1da177e4 | 3506 | g->minors = 1; |
1da177e4 LT |
3507 | g->driverfs_dev = &drive->gendev; |
3508 | g->flags = GENHD_FL_CD | GENHD_FL_REMOVABLE; | |
3509 | if (ide_cdrom_setup(drive)) { | |
7662d046 | 3510 | ide_proc_unregister_driver(drive, &ide_cdrom_driver); |
05017db3 | 3511 | ide_cd_release(&info->kref); |
1da177e4 LT |
3512 | goto failed; |
3513 | } | |
1da177e4 LT |
3514 | |
3515 | cdrom_read_toc(drive, &sense); | |
3516 | g->fops = &idecd_ops; | |
3517 | g->flags |= GENHD_FL_REMOVABLE; | |
3518 | add_disk(g); | |
3519 | return 0; | |
3520 | ||
1da177e4 LT |
3521 | out_free_cd: |
3522 | kfree(info); | |
3523 | failed: | |
8604affd | 3524 | return -ENODEV; |
1da177e4 LT |
3525 | } |
3526 | ||
3527 | static void __exit ide_cdrom_exit(void) | |
3528 | { | |
8604affd | 3529 | driver_unregister(&ide_cdrom_driver.gen_driver); |
1da177e4 | 3530 | } |
17514e8a BZ |
3531 | |
3532 | static int __init ide_cdrom_init(void) | |
1da177e4 | 3533 | { |
8604affd | 3534 | return driver_register(&ide_cdrom_driver.gen_driver); |
1da177e4 LT |
3535 | } |
3536 | ||
263756ec | 3537 | MODULE_ALIAS("ide:*m-cdrom*"); |
1da177e4 LT |
3538 | module_init(ide_cdrom_init); |
3539 | module_exit(ide_cdrom_exit); | |
3540 | MODULE_LICENSE("GPL"); |