Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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. |
| 123 | * 3.11 Apr 29, 1996 -- Patch from Heiko Eissfeldt <heiko@colossus.escape.de> |
| 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. |
| 259 | * - Heiko Eissfeldt <heiko@colossus.escape.de> supplied |
| 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 | |
| 304 | #include <linux/config.h> |
| 305 | #include <linux/module.h> |
| 306 | #include <linux/types.h> |
| 307 | #include <linux/kernel.h> |
| 308 | #include <linux/delay.h> |
| 309 | #include <linux/timer.h> |
| 310 | #include <linux/slab.h> |
| 311 | #include <linux/interrupt.h> |
| 312 | #include <linux/errno.h> |
| 313 | #include <linux/cdrom.h> |
| 314 | #include <linux/ide.h> |
| 315 | #include <linux/completion.h> |
| 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 | |
| 327 | static DECLARE_MUTEX(idecd_ref_sem); |
| 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 | |
| 338 | down(&idecd_ref_sem); |
| 339 | cd = ide_cd_g(disk); |
| 340 | if (cd) |
| 341 | kref_get(&cd->kref); |
| 342 | up(&idecd_ref_sem); |
| 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 | { |
| 350 | down(&idecd_ref_sem); |
| 351 | kref_put(&cd->kref, ide_cd_release); |
| 352 | up(&idecd_ref_sem); |
| 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 | |
| 375 | if (!sense || !rq || (rq->flags & REQ_QUIET)) |
| 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) |
| 397 | log = 0; |
| 398 | break; |
| 399 | case UNIT_ATTENTION: |
| 400 | /* |
| 401 | * Make good and sure we've seen this potential media |
| 402 | * change. Some drives (i.e. Creative) fail to present |
| 403 | * the correct sense key in the error register. |
| 404 | */ |
| 405 | cdrom_saw_media_change(drive); |
| 406 | break; |
| 407 | default: |
| 408 | log = 1; |
| 409 | break; |
| 410 | } |
| 411 | return log; |
| 412 | } |
| 413 | |
| 414 | static |
| 415 | void cdrom_analyze_sense_data(ide_drive_t *drive, |
| 416 | struct request *failed_command, |
| 417 | struct request_sense *sense) |
| 418 | { |
| 419 | if (!cdrom_log_sense(drive, failed_command, sense)) |
| 420 | return; |
| 421 | |
| 422 | /* |
| 423 | * If a read toc is executed for a CD-R or CD-RW medium where |
| 424 | * the first toc has not been recorded yet, it will fail with |
| 425 | * 05/24/00 (which is a confusing error) |
| 426 | */ |
| 427 | if (failed_command && failed_command->cmd[0] == GPCMD_READ_TOC_PMA_ATIP) |
| 428 | if (sense->sense_key == 0x05 && sense->asc == 0x24) |
| 429 | return; |
| 430 | |
| 431 | #if VERBOSE_IDE_CD_ERRORS |
| 432 | { |
| 433 | int i; |
Matt Mackall | 70d1d47 | 2005-07-12 13:58:09 -0700 | [diff] [blame] | 434 | const char *s = "bad sense key!"; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 435 | char buf[80]; |
| 436 | |
| 437 | printk ("ATAPI device %s:\n", drive->name); |
| 438 | if (sense->error_code==0x70) |
| 439 | printk(" Error: "); |
| 440 | else if (sense->error_code==0x71) |
| 441 | printk(" Deferred Error: "); |
| 442 | else if (sense->error_code == 0x7f) |
| 443 | printk(" Vendor-specific Error: "); |
| 444 | else |
| 445 | printk(" Unknown Error Type: "); |
| 446 | |
| 447 | if (sense->sense_key < ARY_LEN(sense_key_texts)) |
| 448 | s = sense_key_texts[sense->sense_key]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 449 | |
| 450 | printk("%s -- (Sense key=0x%02x)\n", s, sense->sense_key); |
| 451 | |
| 452 | if (sense->asc == 0x40) { |
| 453 | sprintf(buf, "Diagnostic failure on component 0x%02x", |
| 454 | sense->ascq); |
| 455 | s = buf; |
| 456 | } else { |
| 457 | int lo = 0, mid, hi = ARY_LEN(sense_data_texts); |
| 458 | unsigned long key = (sense->sense_key << 16); |
| 459 | key |= (sense->asc << 8); |
| 460 | if (!(sense->ascq >= 0x80 && sense->ascq <= 0xdd)) |
| 461 | key |= sense->ascq; |
| 462 | s = NULL; |
| 463 | |
| 464 | while (hi > lo) { |
| 465 | mid = (lo + hi) / 2; |
| 466 | if (sense_data_texts[mid].asc_ascq == key || |
| 467 | sense_data_texts[mid].asc_ascq == (0xff0000|key)) { |
| 468 | s = sense_data_texts[mid].text; |
| 469 | break; |
| 470 | } |
| 471 | else if (sense_data_texts[mid].asc_ascq > key) |
| 472 | hi = mid; |
| 473 | else |
| 474 | lo = mid+1; |
| 475 | } |
| 476 | } |
| 477 | |
| 478 | if (s == NULL) { |
| 479 | if (sense->asc > 0x80) |
| 480 | s = "(vendor-specific error)"; |
| 481 | else |
| 482 | s = "(reserved error code)"; |
| 483 | } |
| 484 | |
| 485 | printk(KERN_ERR " %s -- (asc=0x%02x, ascq=0x%02x)\n", |
| 486 | s, sense->asc, sense->ascq); |
| 487 | |
| 488 | if (failed_command != NULL) { |
| 489 | |
| 490 | int lo=0, mid, hi= ARY_LEN (packet_command_texts); |
| 491 | s = NULL; |
| 492 | |
| 493 | while (hi > lo) { |
| 494 | mid = (lo + hi) / 2; |
| 495 | if (packet_command_texts[mid].packet_command == |
| 496 | failed_command->cmd[0]) { |
| 497 | s = packet_command_texts[mid].text; |
| 498 | break; |
| 499 | } |
| 500 | if (packet_command_texts[mid].packet_command > |
| 501 | failed_command->cmd[0]) |
| 502 | hi = mid; |
| 503 | else |
| 504 | lo = mid+1; |
| 505 | } |
| 506 | |
| 507 | printk (KERN_ERR " The failed \"%s\" packet command was: \n \"", s); |
| 508 | for (i=0; i<sizeof (failed_command->cmd); i++) |
| 509 | printk ("%02x ", failed_command->cmd[i]); |
| 510 | printk ("\"\n"); |
| 511 | } |
| 512 | |
| 513 | /* The SKSV bit specifies validity of the sense_key_specific |
| 514 | * in the next two commands. It is bit 7 of the first byte. |
| 515 | * In the case of NOT_READY, if SKSV is set the drive can |
| 516 | * give us nice ETA readings. |
| 517 | */ |
| 518 | if (sense->sense_key == NOT_READY && (sense->sks[0] & 0x80)) { |
| 519 | int progress = (sense->sks[1] << 8 | sense->sks[2]) * 100; |
| 520 | printk(KERN_ERR " Command is %02d%% complete\n", progress / 0xffff); |
| 521 | |
| 522 | } |
| 523 | |
| 524 | if (sense->sense_key == ILLEGAL_REQUEST && |
| 525 | (sense->sks[0] & 0x80) != 0) { |
| 526 | printk(KERN_ERR " Error in %s byte %d", |
| 527 | (sense->sks[0] & 0x40) != 0 ? |
| 528 | "command packet" : "command data", |
| 529 | (sense->sks[1] << 8) + sense->sks[2]); |
| 530 | |
| 531 | if ((sense->sks[0] & 0x40) != 0) |
| 532 | printk (" bit %d", sense->sks[0] & 0x07); |
| 533 | |
| 534 | printk ("\n"); |
| 535 | } |
| 536 | } |
| 537 | |
| 538 | #else /* not VERBOSE_IDE_CD_ERRORS */ |
| 539 | |
| 540 | /* Suppress printing unit attention and `in progress of becoming ready' |
| 541 | errors when we're not being verbose. */ |
| 542 | |
| 543 | if (sense->sense_key == UNIT_ATTENTION || |
| 544 | (sense->sense_key == NOT_READY && (sense->asc == 4 || |
| 545 | sense->asc == 0x3a))) |
| 546 | return; |
| 547 | |
| 548 | printk(KERN_ERR "%s: error code: 0x%02x sense_key: 0x%02x asc: 0x%02x ascq: 0x%02x\n", |
| 549 | drive->name, |
| 550 | sense->error_code, sense->sense_key, |
| 551 | sense->asc, sense->ascq); |
| 552 | #endif /* not VERBOSE_IDE_CD_ERRORS */ |
| 553 | } |
| 554 | |
| 555 | /* |
| 556 | * Initialize a ide-cd packet command request |
| 557 | */ |
| 558 | static void cdrom_prepare_request(ide_drive_t *drive, struct request *rq) |
| 559 | { |
| 560 | struct cdrom_info *cd = drive->driver_data; |
| 561 | |
| 562 | ide_init_drive_cmd(rq); |
| 563 | rq->flags = REQ_PC; |
| 564 | rq->rq_disk = cd->disk; |
| 565 | } |
| 566 | |
| 567 | static void cdrom_queue_request_sense(ide_drive_t *drive, void *sense, |
| 568 | struct request *failed_command) |
| 569 | { |
| 570 | struct cdrom_info *info = drive->driver_data; |
| 571 | struct request *rq = &info->request_sense_request; |
| 572 | |
| 573 | if (sense == NULL) |
| 574 | sense = &info->sense_data; |
| 575 | |
| 576 | /* stuff the sense request in front of our current request */ |
| 577 | cdrom_prepare_request(drive, rq); |
| 578 | |
| 579 | rq->data = sense; |
| 580 | rq->cmd[0] = GPCMD_REQUEST_SENSE; |
| 581 | rq->cmd[4] = rq->data_len = 18; |
| 582 | |
| 583 | rq->flags = REQ_SENSE; |
| 584 | |
| 585 | /* NOTE! Save the failed command in "rq->buffer" */ |
| 586 | rq->buffer = (void *) failed_command; |
| 587 | |
| 588 | (void) ide_do_drive_cmd(drive, rq, ide_preempt); |
| 589 | } |
| 590 | |
| 591 | static void cdrom_end_request (ide_drive_t *drive, int uptodate) |
| 592 | { |
| 593 | struct request *rq = HWGROUP(drive)->rq; |
| 594 | int nsectors = rq->hard_cur_sectors; |
| 595 | |
| 596 | if ((rq->flags & REQ_SENSE) && uptodate) { |
| 597 | /* |
| 598 | * For REQ_SENSE, "rq->buffer" points to the original failed |
| 599 | * request |
| 600 | */ |
| 601 | struct request *failed = (struct request *) rq->buffer; |
| 602 | struct cdrom_info *info = drive->driver_data; |
| 603 | void *sense = &info->sense_data; |
| 604 | unsigned long flags; |
| 605 | |
| 606 | if (failed) { |
| 607 | if (failed->sense) { |
| 608 | sense = failed->sense; |
| 609 | failed->sense_len = rq->sense_len; |
| 610 | } |
| 611 | |
| 612 | /* |
| 613 | * now end failed request |
| 614 | */ |
| 615 | spin_lock_irqsave(&ide_lock, flags); |
| 616 | end_that_request_chunk(failed, 0, failed->data_len); |
| 617 | end_that_request_last(failed); |
| 618 | spin_unlock_irqrestore(&ide_lock, flags); |
| 619 | } |
| 620 | |
| 621 | cdrom_analyze_sense_data(drive, failed, sense); |
| 622 | } |
| 623 | |
| 624 | if (!rq->current_nr_sectors && blk_fs_request(rq)) |
| 625 | uptodate = 1; |
| 626 | /* make sure it's fully ended */ |
| 627 | if (blk_pc_request(rq)) |
| 628 | nsectors = (rq->data_len + 511) >> 9; |
| 629 | if (!nsectors) |
| 630 | nsectors = 1; |
| 631 | |
| 632 | ide_end_request(drive, uptodate, nsectors); |
| 633 | } |
| 634 | |
| 635 | /* Returns 0 if the request should be continued. |
| 636 | Returns 1 if the request was ended. */ |
| 637 | static int cdrom_decode_status(ide_drive_t *drive, int good_stat, int *stat_ret) |
| 638 | { |
| 639 | struct request *rq = HWGROUP(drive)->rq; |
| 640 | int stat, err, sense_key; |
| 641 | |
| 642 | /* Check for errors. */ |
| 643 | stat = HWIF(drive)->INB(IDE_STATUS_REG); |
| 644 | if (stat_ret) |
| 645 | *stat_ret = stat; |
| 646 | |
| 647 | if (OK_STAT(stat, good_stat, BAD_R_STAT)) |
| 648 | return 0; |
| 649 | |
| 650 | /* Get the IDE error register. */ |
| 651 | err = HWIF(drive)->INB(IDE_ERROR_REG); |
| 652 | sense_key = err >> 4; |
| 653 | |
| 654 | if (rq == NULL) { |
| 655 | printk("%s: missing rq in cdrom_decode_status\n", drive->name); |
| 656 | return 1; |
| 657 | } |
| 658 | |
| 659 | if (rq->flags & REQ_SENSE) { |
| 660 | /* We got an error trying to get sense info |
| 661 | from the drive (probably while trying |
| 662 | to recover from a former error). Just give up. */ |
| 663 | |
| 664 | rq->flags |= REQ_FAILED; |
| 665 | cdrom_end_request(drive, 0); |
| 666 | ide_error(drive, "request sense failure", stat); |
| 667 | return 1; |
| 668 | |
| 669 | } else if (rq->flags & (REQ_PC | REQ_BLOCK_PC)) { |
| 670 | /* All other functions, except for READ. */ |
| 671 | unsigned long flags; |
| 672 | |
| 673 | /* |
| 674 | * if we have an error, pass back CHECK_CONDITION as the |
| 675 | * scsi status byte |
| 676 | */ |
| 677 | if ((rq->flags & REQ_BLOCK_PC) && !rq->errors) |
| 678 | rq->errors = SAM_STAT_CHECK_CONDITION; |
| 679 | |
| 680 | /* Check for tray open. */ |
| 681 | if (sense_key == NOT_READY) { |
| 682 | cdrom_saw_media_change (drive); |
| 683 | } else if (sense_key == UNIT_ATTENTION) { |
| 684 | /* Check for media change. */ |
| 685 | cdrom_saw_media_change (drive); |
| 686 | /*printk("%s: media changed\n",drive->name);*/ |
| 687 | return 0; |
| 688 | } else if (!(rq->flags & REQ_QUIET)) { |
| 689 | /* Otherwise, print an error. */ |
| 690 | ide_dump_status(drive, "packet command error", stat); |
| 691 | } |
| 692 | |
| 693 | rq->flags |= REQ_FAILED; |
| 694 | |
| 695 | /* |
| 696 | * instead of playing games with moving completions around, |
| 697 | * remove failed request completely and end it when the |
| 698 | * request sense has completed |
| 699 | */ |
| 700 | if (stat & ERR_STAT) { |
| 701 | spin_lock_irqsave(&ide_lock, flags); |
| 702 | blkdev_dequeue_request(rq); |
| 703 | HWGROUP(drive)->rq = NULL; |
| 704 | spin_unlock_irqrestore(&ide_lock, flags); |
| 705 | |
| 706 | cdrom_queue_request_sense(drive, rq->sense, rq); |
| 707 | } else |
| 708 | cdrom_end_request(drive, 0); |
| 709 | |
| 710 | } else if (blk_fs_request(rq)) { |
| 711 | int do_end_request = 0; |
| 712 | |
| 713 | /* Handle errors from READ and WRITE requests. */ |
| 714 | |
| 715 | if (blk_noretry_request(rq)) |
| 716 | do_end_request = 1; |
| 717 | |
| 718 | if (sense_key == NOT_READY) { |
| 719 | /* Tray open. */ |
| 720 | if (rq_data_dir(rq) == READ) { |
| 721 | cdrom_saw_media_change (drive); |
| 722 | |
| 723 | /* Fail the request. */ |
| 724 | printk ("%s: tray open\n", drive->name); |
| 725 | do_end_request = 1; |
| 726 | } else { |
| 727 | struct cdrom_info *info = drive->driver_data; |
| 728 | |
| 729 | /* allow the drive 5 seconds to recover, some |
| 730 | * devices will return this error while flushing |
| 731 | * data from cache */ |
| 732 | if (!rq->errors) |
| 733 | info->write_timeout = jiffies + ATAPI_WAIT_WRITE_BUSY; |
| 734 | rq->errors = 1; |
| 735 | if (time_after(jiffies, info->write_timeout)) |
| 736 | do_end_request = 1; |
| 737 | else { |
| 738 | unsigned long flags; |
| 739 | |
| 740 | /* |
| 741 | * take a breather relying on the |
| 742 | * unplug timer to kick us again |
| 743 | */ |
| 744 | spin_lock_irqsave(&ide_lock, flags); |
| 745 | blk_plug_device(drive->queue); |
| 746 | spin_unlock_irqrestore(&ide_lock,flags); |
| 747 | return 1; |
| 748 | } |
| 749 | } |
| 750 | } else if (sense_key == UNIT_ATTENTION) { |
| 751 | /* Media change. */ |
| 752 | cdrom_saw_media_change (drive); |
| 753 | |
| 754 | /* Arrange to retry the request. |
| 755 | But be sure to give up if we've retried |
| 756 | too many times. */ |
| 757 | if (++rq->errors > ERROR_MAX) |
| 758 | do_end_request = 1; |
| 759 | } else if (sense_key == ILLEGAL_REQUEST || |
| 760 | sense_key == DATA_PROTECT) { |
| 761 | /* No point in retrying after an illegal |
| 762 | request or data protect error.*/ |
| 763 | ide_dump_status (drive, "command error", stat); |
| 764 | do_end_request = 1; |
| 765 | } else if (sense_key == MEDIUM_ERROR) { |
| 766 | /* No point in re-trying a zillion times on a bad |
| 767 | * sector... If we got here the error is not correctable */ |
| 768 | ide_dump_status (drive, "media error (bad sector)", stat); |
| 769 | do_end_request = 1; |
| 770 | } else if (sense_key == BLANK_CHECK) { |
| 771 | /* Disk appears blank ?? */ |
| 772 | ide_dump_status (drive, "media error (blank)", stat); |
| 773 | do_end_request = 1; |
| 774 | } else if ((err & ~ABRT_ERR) != 0) { |
| 775 | /* Go to the default handler |
| 776 | for other errors. */ |
| 777 | ide_error(drive, "cdrom_decode_status", stat); |
| 778 | return 1; |
| 779 | } else if ((++rq->errors > ERROR_MAX)) { |
| 780 | /* We've racked up too many retries. Abort. */ |
| 781 | do_end_request = 1; |
| 782 | } |
| 783 | |
| 784 | if (do_end_request) |
| 785 | cdrom_end_request(drive, 0); |
| 786 | |
| 787 | /* If we got a CHECK_CONDITION status, |
| 788 | queue a request sense command. */ |
| 789 | if ((stat & ERR_STAT) != 0) |
| 790 | cdrom_queue_request_sense(drive, NULL, NULL); |
| 791 | } else { |
| 792 | blk_dump_rq_flags(rq, "ide-cd: bad rq"); |
| 793 | cdrom_end_request(drive, 0); |
| 794 | } |
| 795 | |
| 796 | /* Retry, or handle the next request. */ |
| 797 | return 1; |
| 798 | } |
| 799 | |
| 800 | static int cdrom_timer_expiry(ide_drive_t *drive) |
| 801 | { |
| 802 | struct request *rq = HWGROUP(drive)->rq; |
| 803 | unsigned long wait = 0; |
| 804 | |
| 805 | /* |
| 806 | * Some commands are *slow* and normally take a long time to |
| 807 | * complete. Usually we can use the ATAPI "disconnect" to bypass |
| 808 | * this, but not all commands/drives support that. Let |
| 809 | * ide_timer_expiry keep polling us for these. |
| 810 | */ |
| 811 | switch (rq->cmd[0]) { |
| 812 | case GPCMD_BLANK: |
| 813 | case GPCMD_FORMAT_UNIT: |
| 814 | case GPCMD_RESERVE_RZONE_TRACK: |
| 815 | case GPCMD_CLOSE_TRACK: |
| 816 | case GPCMD_FLUSH_CACHE: |
| 817 | wait = ATAPI_WAIT_PC; |
| 818 | break; |
| 819 | default: |
| 820 | if (!(rq->flags & REQ_QUIET)) |
| 821 | printk(KERN_INFO "ide-cd: cmd 0x%x timed out\n", rq->cmd[0]); |
| 822 | wait = 0; |
| 823 | break; |
| 824 | } |
| 825 | return wait; |
| 826 | } |
| 827 | |
| 828 | /* Set up the device registers for transferring a packet command on DEV, |
| 829 | expecting to later transfer XFERLEN bytes. HANDLER is the routine |
| 830 | which actually transfers the command to the drive. If this is a |
| 831 | drq_interrupt device, this routine will arrange for HANDLER to be |
| 832 | called when the interrupt from the drive arrives. Otherwise, HANDLER |
| 833 | will be called immediately after the drive is prepared for the transfer. */ |
| 834 | |
| 835 | static ide_startstop_t cdrom_start_packet_command(ide_drive_t *drive, |
| 836 | int xferlen, |
| 837 | ide_handler_t *handler) |
| 838 | { |
| 839 | ide_startstop_t startstop; |
| 840 | struct cdrom_info *info = drive->driver_data; |
| 841 | ide_hwif_t *hwif = drive->hwif; |
| 842 | |
| 843 | /* Wait for the controller to be idle. */ |
| 844 | if (ide_wait_stat(&startstop, drive, 0, BUSY_STAT, WAIT_READY)) |
| 845 | return startstop; |
| 846 | |
| 847 | if (info->dma) |
| 848 | info->dma = !hwif->dma_setup(drive); |
| 849 | |
| 850 | /* Set up the controller registers. */ |
| 851 | /* FIXME: for Virtual DMA we must check harder */ |
| 852 | HWIF(drive)->OUTB(info->dma, IDE_FEATURE_REG); |
| 853 | HWIF(drive)->OUTB(0, IDE_IREASON_REG); |
| 854 | HWIF(drive)->OUTB(0, IDE_SECTOR_REG); |
| 855 | |
| 856 | HWIF(drive)->OUTB(xferlen & 0xff, IDE_BCOUNTL_REG); |
| 857 | HWIF(drive)->OUTB(xferlen >> 8 , IDE_BCOUNTH_REG); |
| 858 | if (IDE_CONTROL_REG) |
| 859 | HWIF(drive)->OUTB(drive->ctl, IDE_CONTROL_REG); |
| 860 | |
| 861 | if (CDROM_CONFIG_FLAGS (drive)->drq_interrupt) { |
| 862 | /* packet command */ |
| 863 | ide_execute_command(drive, WIN_PACKETCMD, handler, ATAPI_WAIT_PC, cdrom_timer_expiry); |
| 864 | return ide_started; |
| 865 | } else { |
| 866 | unsigned long flags; |
| 867 | |
| 868 | /* packet command */ |
| 869 | spin_lock_irqsave(&ide_lock, flags); |
| 870 | hwif->OUTBSYNC(drive, WIN_PACKETCMD, IDE_COMMAND_REG); |
| 871 | ndelay(400); |
| 872 | spin_unlock_irqrestore(&ide_lock, flags); |
| 873 | |
| 874 | return (*handler) (drive); |
| 875 | } |
| 876 | } |
| 877 | |
| 878 | /* Send a packet command to DRIVE described by CMD_BUF and CMD_LEN. |
| 879 | The device registers must have already been prepared |
| 880 | by cdrom_start_packet_command. |
| 881 | HANDLER is the interrupt handler to call when the command completes |
| 882 | or there's data ready. */ |
| 883 | /* |
| 884 | * changed 5 parameters to 3 for dvd-ram |
| 885 | * struct packet_command *pc; now packet_command_t *pc; |
| 886 | */ |
| 887 | #define ATAPI_MIN_CDB_BYTES 12 |
| 888 | static ide_startstop_t cdrom_transfer_packet_command (ide_drive_t *drive, |
| 889 | struct request *rq, |
| 890 | ide_handler_t *handler) |
| 891 | { |
| 892 | ide_hwif_t *hwif = drive->hwif; |
| 893 | int cmd_len; |
| 894 | struct cdrom_info *info = drive->driver_data; |
| 895 | ide_startstop_t startstop; |
| 896 | |
| 897 | if (CDROM_CONFIG_FLAGS(drive)->drq_interrupt) { |
| 898 | /* Here we should have been called after receiving an interrupt |
| 899 | from the device. DRQ should how be set. */ |
| 900 | |
| 901 | /* Check for errors. */ |
| 902 | if (cdrom_decode_status(drive, DRQ_STAT, NULL)) |
| 903 | return ide_stopped; |
| 904 | } else { |
| 905 | /* Otherwise, we must wait for DRQ to get set. */ |
| 906 | if (ide_wait_stat(&startstop, drive, DRQ_STAT, |
| 907 | BUSY_STAT, WAIT_READY)) |
| 908 | return startstop; |
| 909 | } |
| 910 | |
| 911 | /* Arm the interrupt handler. */ |
| 912 | ide_set_handler(drive, handler, rq->timeout, cdrom_timer_expiry); |
| 913 | |
| 914 | /* ATAPI commands get padded out to 12 bytes minimum */ |
| 915 | cmd_len = COMMAND_SIZE(rq->cmd[0]); |
| 916 | if (cmd_len < ATAPI_MIN_CDB_BYTES) |
| 917 | cmd_len = ATAPI_MIN_CDB_BYTES; |
| 918 | |
| 919 | /* Send the command to the device. */ |
| 920 | HWIF(drive)->atapi_output_bytes(drive, rq->cmd, cmd_len); |
| 921 | |
| 922 | /* Start the DMA if need be */ |
| 923 | if (info->dma) |
| 924 | hwif->dma_start(drive); |
| 925 | |
| 926 | return ide_started; |
| 927 | } |
| 928 | |
| 929 | /**************************************************************************** |
| 930 | * Block read functions. |
| 931 | */ |
| 932 | |
| 933 | /* |
| 934 | * Buffer up to SECTORS_TO_TRANSFER sectors from the drive in our sector |
| 935 | * buffer. Once the first sector is added, any subsequent sectors are |
| 936 | * assumed to be continuous (until the buffer is cleared). For the first |
| 937 | * sector added, SECTOR is its sector number. (SECTOR is then ignored until |
| 938 | * the buffer is cleared.) |
| 939 | */ |
| 940 | static void cdrom_buffer_sectors (ide_drive_t *drive, unsigned long sector, |
| 941 | int sectors_to_transfer) |
| 942 | { |
| 943 | struct cdrom_info *info = drive->driver_data; |
| 944 | |
| 945 | /* Number of sectors to read into the buffer. */ |
| 946 | int sectors_to_buffer = min_t(int, sectors_to_transfer, |
| 947 | (SECTOR_BUFFER_SIZE >> SECTOR_BITS) - |
| 948 | info->nsectors_buffered); |
| 949 | |
| 950 | char *dest; |
| 951 | |
| 952 | /* If we couldn't get a buffer, don't try to buffer anything... */ |
| 953 | if (info->buffer == NULL) |
| 954 | sectors_to_buffer = 0; |
| 955 | |
| 956 | /* If this is the first sector in the buffer, remember its number. */ |
| 957 | if (info->nsectors_buffered == 0) |
| 958 | info->sector_buffered = sector; |
| 959 | |
| 960 | /* Read the data into the buffer. */ |
| 961 | dest = info->buffer + info->nsectors_buffered * SECTOR_SIZE; |
| 962 | while (sectors_to_buffer > 0) { |
| 963 | HWIF(drive)->atapi_input_bytes(drive, dest, SECTOR_SIZE); |
| 964 | --sectors_to_buffer; |
| 965 | --sectors_to_transfer; |
| 966 | ++info->nsectors_buffered; |
| 967 | dest += SECTOR_SIZE; |
| 968 | } |
| 969 | |
| 970 | /* Throw away any remaining data. */ |
| 971 | while (sectors_to_transfer > 0) { |
| 972 | static char dum[SECTOR_SIZE]; |
| 973 | HWIF(drive)->atapi_input_bytes(drive, dum, sizeof (dum)); |
| 974 | --sectors_to_transfer; |
| 975 | } |
| 976 | } |
| 977 | |
| 978 | /* |
| 979 | * Check the contents of the interrupt reason register from the cdrom |
| 980 | * and attempt to recover if there are problems. Returns 0 if everything's |
| 981 | * ok; nonzero if the request has been terminated. |
| 982 | */ |
| 983 | static inline |
| 984 | int cdrom_read_check_ireason (ide_drive_t *drive, int len, int ireason) |
| 985 | { |
| 986 | if (ireason == 2) |
| 987 | return 0; |
| 988 | else if (ireason == 0) { |
| 989 | /* Whoops... The drive is expecting to receive data from us! */ |
| 990 | printk(KERN_ERR "%s: read_intr: Drive wants to transfer data the " |
| 991 | "wrong way!\n", drive->name); |
| 992 | |
| 993 | /* Throw some data at the drive so it doesn't hang |
| 994 | and quit this request. */ |
| 995 | while (len > 0) { |
| 996 | int dum = 0; |
| 997 | HWIF(drive)->atapi_output_bytes(drive, &dum, sizeof (dum)); |
| 998 | len -= sizeof (dum); |
| 999 | } |
| 1000 | } else if (ireason == 1) { |
| 1001 | /* Some drives (ASUS) seem to tell us that status |
| 1002 | * info is available. just get it and ignore. |
| 1003 | */ |
| 1004 | (void) HWIF(drive)->INB(IDE_STATUS_REG); |
| 1005 | return 0; |
| 1006 | } else { |
| 1007 | /* Drive wants a command packet, or invalid ireason... */ |
| 1008 | printk(KERN_ERR "%s: read_intr: bad interrupt reason %x\n", drive->name, |
| 1009 | ireason); |
| 1010 | } |
| 1011 | |
| 1012 | cdrom_end_request(drive, 0); |
| 1013 | return -1; |
| 1014 | } |
| 1015 | |
| 1016 | /* |
| 1017 | * Interrupt routine. Called when a read request has completed. |
| 1018 | */ |
| 1019 | static ide_startstop_t cdrom_read_intr (ide_drive_t *drive) |
| 1020 | { |
| 1021 | int stat; |
| 1022 | int ireason, len, sectors_to_transfer, nskip; |
| 1023 | struct cdrom_info *info = drive->driver_data; |
| 1024 | u8 lowcyl = 0, highcyl = 0; |
| 1025 | int dma = info->dma, dma_error = 0; |
| 1026 | |
| 1027 | struct request *rq = HWGROUP(drive)->rq; |
| 1028 | |
| 1029 | /* |
| 1030 | * handle dma case |
| 1031 | */ |
| 1032 | if (dma) { |
| 1033 | info->dma = 0; |
| 1034 | if ((dma_error = HWIF(drive)->ide_dma_end(drive))) |
| 1035 | __ide_dma_off(drive); |
| 1036 | } |
| 1037 | |
| 1038 | if (cdrom_decode_status(drive, 0, &stat)) |
| 1039 | return ide_stopped; |
| 1040 | |
| 1041 | if (dma) { |
| 1042 | if (!dma_error) { |
| 1043 | ide_end_request(drive, 1, rq->nr_sectors); |
| 1044 | return ide_stopped; |
| 1045 | } else |
| 1046 | return ide_error(drive, "dma error", stat); |
| 1047 | } |
| 1048 | |
| 1049 | /* Read the interrupt reason and the transfer length. */ |
| 1050 | ireason = HWIF(drive)->INB(IDE_IREASON_REG) & 0x3; |
| 1051 | lowcyl = HWIF(drive)->INB(IDE_BCOUNTL_REG); |
| 1052 | highcyl = HWIF(drive)->INB(IDE_BCOUNTH_REG); |
| 1053 | |
| 1054 | len = lowcyl + (256 * highcyl); |
| 1055 | |
| 1056 | /* If DRQ is clear, the command has completed. */ |
| 1057 | if ((stat & DRQ_STAT) == 0) { |
| 1058 | /* If we're not done filling the current buffer, complain. |
| 1059 | Otherwise, complete the command normally. */ |
| 1060 | if (rq->current_nr_sectors > 0) { |
| 1061 | printk (KERN_ERR "%s: cdrom_read_intr: data underrun (%d blocks)\n", |
| 1062 | drive->name, rq->current_nr_sectors); |
| 1063 | rq->flags |= REQ_FAILED; |
| 1064 | cdrom_end_request(drive, 0); |
| 1065 | } else |
| 1066 | cdrom_end_request(drive, 1); |
| 1067 | return ide_stopped; |
| 1068 | } |
| 1069 | |
| 1070 | /* Check that the drive is expecting to do the same thing we are. */ |
| 1071 | if (cdrom_read_check_ireason (drive, len, ireason)) |
| 1072 | return ide_stopped; |
| 1073 | |
| 1074 | /* Assume that the drive will always provide data in multiples |
| 1075 | of at least SECTOR_SIZE, as it gets hairy to keep track |
| 1076 | of the transfers otherwise. */ |
| 1077 | if ((len % SECTOR_SIZE) != 0) { |
| 1078 | printk (KERN_ERR "%s: cdrom_read_intr: Bad transfer size %d\n", |
| 1079 | drive->name, len); |
| 1080 | if (CDROM_CONFIG_FLAGS(drive)->limit_nframes) |
| 1081 | printk (KERN_ERR " This drive is not supported by this version of the driver\n"); |
| 1082 | else { |
| 1083 | printk (KERN_ERR " Trying to limit transfer sizes\n"); |
| 1084 | CDROM_CONFIG_FLAGS(drive)->limit_nframes = 1; |
| 1085 | } |
| 1086 | cdrom_end_request(drive, 0); |
| 1087 | return ide_stopped; |
| 1088 | } |
| 1089 | |
| 1090 | /* The number of sectors we need to read from the drive. */ |
| 1091 | sectors_to_transfer = len / SECTOR_SIZE; |
| 1092 | |
| 1093 | /* First, figure out if we need to bit-bucket |
| 1094 | any of the leading sectors. */ |
| 1095 | nskip = min_t(int, rq->current_nr_sectors - bio_cur_sectors(rq->bio), sectors_to_transfer); |
| 1096 | |
| 1097 | while (nskip > 0) { |
| 1098 | /* We need to throw away a sector. */ |
| 1099 | static char dum[SECTOR_SIZE]; |
| 1100 | HWIF(drive)->atapi_input_bytes(drive, dum, sizeof (dum)); |
| 1101 | |
| 1102 | --rq->current_nr_sectors; |
| 1103 | --nskip; |
| 1104 | --sectors_to_transfer; |
| 1105 | } |
| 1106 | |
| 1107 | /* Now loop while we still have data to read from the drive. */ |
| 1108 | while (sectors_to_transfer > 0) { |
| 1109 | int this_transfer; |
| 1110 | |
| 1111 | /* If we've filled the present buffer but there's another |
| 1112 | chained buffer after it, move on. */ |
| 1113 | if (rq->current_nr_sectors == 0 && rq->nr_sectors) |
| 1114 | cdrom_end_request(drive, 1); |
| 1115 | |
| 1116 | /* If the buffers are full, cache the rest of the data in our |
| 1117 | internal buffer. */ |
| 1118 | if (rq->current_nr_sectors == 0) { |
| 1119 | cdrom_buffer_sectors(drive, rq->sector, sectors_to_transfer); |
| 1120 | sectors_to_transfer = 0; |
| 1121 | } else { |
| 1122 | /* Transfer data to the buffers. |
| 1123 | Figure out how many sectors we can transfer |
| 1124 | to the current buffer. */ |
| 1125 | this_transfer = min_t(int, sectors_to_transfer, |
| 1126 | rq->current_nr_sectors); |
| 1127 | |
| 1128 | /* Read this_transfer sectors |
| 1129 | into the current buffer. */ |
| 1130 | while (this_transfer > 0) { |
| 1131 | HWIF(drive)->atapi_input_bytes(drive, rq->buffer, SECTOR_SIZE); |
| 1132 | rq->buffer += SECTOR_SIZE; |
| 1133 | --rq->nr_sectors; |
| 1134 | --rq->current_nr_sectors; |
| 1135 | ++rq->sector; |
| 1136 | --this_transfer; |
| 1137 | --sectors_to_transfer; |
| 1138 | } |
| 1139 | } |
| 1140 | } |
| 1141 | |
| 1142 | /* Done moving data! Wait for another interrupt. */ |
| 1143 | ide_set_handler(drive, &cdrom_read_intr, ATAPI_WAIT_PC, NULL); |
| 1144 | return ide_started; |
| 1145 | } |
| 1146 | |
| 1147 | /* |
| 1148 | * Try to satisfy some of the current read request from our cached data. |
| 1149 | * Returns nonzero if the request has been completed, zero otherwise. |
| 1150 | */ |
| 1151 | static int cdrom_read_from_buffer (ide_drive_t *drive) |
| 1152 | { |
| 1153 | struct cdrom_info *info = drive->driver_data; |
| 1154 | struct request *rq = HWGROUP(drive)->rq; |
| 1155 | unsigned short sectors_per_frame; |
| 1156 | |
| 1157 | sectors_per_frame = queue_hardsect_size(drive->queue) >> SECTOR_BITS; |
| 1158 | |
| 1159 | /* Can't do anything if there's no buffer. */ |
| 1160 | if (info->buffer == NULL) return 0; |
| 1161 | |
| 1162 | /* Loop while this request needs data and the next block is present |
| 1163 | in our cache. */ |
| 1164 | while (rq->nr_sectors > 0 && |
| 1165 | rq->sector >= info->sector_buffered && |
| 1166 | rq->sector < info->sector_buffered + info->nsectors_buffered) { |
| 1167 | if (rq->current_nr_sectors == 0) |
| 1168 | cdrom_end_request(drive, 1); |
| 1169 | |
| 1170 | memcpy (rq->buffer, |
| 1171 | info->buffer + |
| 1172 | (rq->sector - info->sector_buffered) * SECTOR_SIZE, |
| 1173 | SECTOR_SIZE); |
| 1174 | rq->buffer += SECTOR_SIZE; |
| 1175 | --rq->current_nr_sectors; |
| 1176 | --rq->nr_sectors; |
| 1177 | ++rq->sector; |
| 1178 | } |
| 1179 | |
| 1180 | /* If we've satisfied the current request, |
| 1181 | terminate it successfully. */ |
| 1182 | if (rq->nr_sectors == 0) { |
| 1183 | cdrom_end_request(drive, 1); |
| 1184 | return -1; |
| 1185 | } |
| 1186 | |
| 1187 | /* Move on to the next buffer if needed. */ |
| 1188 | if (rq->current_nr_sectors == 0) |
| 1189 | cdrom_end_request(drive, 1); |
| 1190 | |
| 1191 | /* If this condition does not hold, then the kluge i use to |
| 1192 | represent the number of sectors to skip at the start of a transfer |
| 1193 | will fail. I think that this will never happen, but let's be |
| 1194 | paranoid and check. */ |
| 1195 | if (rq->current_nr_sectors < bio_cur_sectors(rq->bio) && |
| 1196 | (rq->sector & (sectors_per_frame - 1))) { |
| 1197 | printk(KERN_ERR "%s: cdrom_read_from_buffer: buffer botch (%ld)\n", |
| 1198 | drive->name, (long)rq->sector); |
| 1199 | cdrom_end_request(drive, 0); |
| 1200 | return -1; |
| 1201 | } |
| 1202 | |
| 1203 | return 0; |
| 1204 | } |
| 1205 | |
| 1206 | /* |
| 1207 | * Routine to send a read packet command to the drive. |
| 1208 | * This is usually called directly from cdrom_start_read. |
| 1209 | * However, for drq_interrupt devices, it is called from an interrupt |
| 1210 | * when the drive is ready to accept the command. |
| 1211 | */ |
| 1212 | static ide_startstop_t cdrom_start_read_continuation (ide_drive_t *drive) |
| 1213 | { |
| 1214 | struct request *rq = HWGROUP(drive)->rq; |
| 1215 | unsigned short sectors_per_frame; |
| 1216 | int nskip; |
| 1217 | |
| 1218 | sectors_per_frame = queue_hardsect_size(drive->queue) >> SECTOR_BITS; |
| 1219 | |
| 1220 | /* If the requested sector doesn't start on a cdrom block boundary, |
| 1221 | we must adjust the start of the transfer so that it does, |
| 1222 | and remember to skip the first few sectors. |
| 1223 | If the CURRENT_NR_SECTORS field is larger than the size |
| 1224 | of the buffer, it will mean that we're to skip a number |
| 1225 | of sectors equal to the amount by which CURRENT_NR_SECTORS |
| 1226 | is larger than the buffer size. */ |
| 1227 | nskip = rq->sector & (sectors_per_frame - 1); |
| 1228 | if (nskip > 0) { |
| 1229 | /* Sanity check... */ |
| 1230 | if (rq->current_nr_sectors != bio_cur_sectors(rq->bio) && |
| 1231 | (rq->sector & (sectors_per_frame - 1))) { |
| 1232 | printk(KERN_ERR "%s: cdrom_start_read_continuation: buffer botch (%u)\n", |
| 1233 | drive->name, rq->current_nr_sectors); |
| 1234 | cdrom_end_request(drive, 0); |
| 1235 | return ide_stopped; |
| 1236 | } |
| 1237 | rq->current_nr_sectors += nskip; |
| 1238 | } |
| 1239 | |
| 1240 | /* Set up the command */ |
| 1241 | rq->timeout = ATAPI_WAIT_PC; |
| 1242 | |
| 1243 | /* Send the command to the drive and return. */ |
| 1244 | return cdrom_transfer_packet_command(drive, rq, &cdrom_read_intr); |
| 1245 | } |
| 1246 | |
| 1247 | |
| 1248 | #define IDECD_SEEK_THRESHOLD (1000) /* 1000 blocks */ |
| 1249 | #define IDECD_SEEK_TIMER (5 * WAIT_MIN_SLEEP) /* 100 ms */ |
| 1250 | #define IDECD_SEEK_TIMEOUT (2 * WAIT_CMD) /* 20 sec */ |
| 1251 | |
| 1252 | static ide_startstop_t cdrom_seek_intr (ide_drive_t *drive) |
| 1253 | { |
| 1254 | struct cdrom_info *info = drive->driver_data; |
| 1255 | int stat; |
| 1256 | static int retry = 10; |
| 1257 | |
| 1258 | if (cdrom_decode_status(drive, 0, &stat)) |
| 1259 | return ide_stopped; |
| 1260 | CDROM_CONFIG_FLAGS(drive)->seeking = 1; |
| 1261 | |
| 1262 | if (retry && time_after(jiffies, info->start_seek + IDECD_SEEK_TIMER)) { |
| 1263 | if (--retry == 0) { |
| 1264 | /* |
| 1265 | * this condition is far too common, to bother |
| 1266 | * users about it |
| 1267 | */ |
| 1268 | /* printk("%s: disabled DSC seek overlap\n", drive->name);*/ |
| 1269 | drive->dsc_overlap = 0; |
| 1270 | } |
| 1271 | } |
| 1272 | return ide_stopped; |
| 1273 | } |
| 1274 | |
| 1275 | static ide_startstop_t cdrom_start_seek_continuation (ide_drive_t *drive) |
| 1276 | { |
| 1277 | struct request *rq = HWGROUP(drive)->rq; |
| 1278 | sector_t frame = rq->sector; |
| 1279 | |
| 1280 | sector_div(frame, queue_hardsect_size(drive->queue) >> SECTOR_BITS); |
| 1281 | |
| 1282 | memset(rq->cmd, 0, sizeof(rq->cmd)); |
| 1283 | rq->cmd[0] = GPCMD_SEEK; |
| 1284 | put_unaligned(cpu_to_be32(frame), (unsigned int *) &rq->cmd[2]); |
| 1285 | |
| 1286 | rq->timeout = ATAPI_WAIT_PC; |
| 1287 | return cdrom_transfer_packet_command(drive, rq, &cdrom_seek_intr); |
| 1288 | } |
| 1289 | |
| 1290 | static ide_startstop_t cdrom_start_seek (ide_drive_t *drive, unsigned int block) |
| 1291 | { |
| 1292 | struct cdrom_info *info = drive->driver_data; |
| 1293 | |
| 1294 | info->dma = 0; |
| 1295 | info->cmd = 0; |
| 1296 | info->start_seek = jiffies; |
| 1297 | return cdrom_start_packet_command(drive, 0, cdrom_start_seek_continuation); |
| 1298 | } |
| 1299 | |
| 1300 | /* Fix up a possibly partially-processed request so that we can |
| 1301 | start it over entirely, or even put it back on the request queue. */ |
| 1302 | static void restore_request (struct request *rq) |
| 1303 | { |
| 1304 | if (rq->buffer != bio_data(rq->bio)) { |
| 1305 | sector_t n = (rq->buffer - (char *) bio_data(rq->bio)) / SECTOR_SIZE; |
| 1306 | |
| 1307 | rq->buffer = bio_data(rq->bio); |
| 1308 | rq->nr_sectors += n; |
| 1309 | rq->sector -= n; |
| 1310 | } |
| 1311 | rq->hard_cur_sectors = rq->current_nr_sectors = bio_cur_sectors(rq->bio); |
| 1312 | rq->hard_nr_sectors = rq->nr_sectors; |
| 1313 | rq->hard_sector = rq->sector; |
| 1314 | rq->q->prep_rq_fn(rq->q, rq); |
| 1315 | } |
| 1316 | |
| 1317 | /* |
| 1318 | * Start a read request from the CD-ROM. |
| 1319 | */ |
| 1320 | static ide_startstop_t cdrom_start_read (ide_drive_t *drive, unsigned int block) |
| 1321 | { |
| 1322 | struct cdrom_info *info = drive->driver_data; |
| 1323 | struct request *rq = HWGROUP(drive)->rq; |
| 1324 | unsigned short sectors_per_frame; |
| 1325 | |
| 1326 | sectors_per_frame = queue_hardsect_size(drive->queue) >> SECTOR_BITS; |
| 1327 | |
| 1328 | /* We may be retrying this request after an error. Fix up |
| 1329 | any weirdness which might be present in the request packet. */ |
| 1330 | restore_request(rq); |
| 1331 | |
| 1332 | /* Satisfy whatever we can of this request from our cached sector. */ |
| 1333 | if (cdrom_read_from_buffer(drive)) |
| 1334 | return ide_stopped; |
| 1335 | |
| 1336 | blk_attempt_remerge(drive->queue, rq); |
| 1337 | |
| 1338 | /* Clear the local sector buffer. */ |
| 1339 | info->nsectors_buffered = 0; |
| 1340 | |
| 1341 | /* use dma, if possible. */ |
| 1342 | info->dma = drive->using_dma; |
| 1343 | if ((rq->sector & (sectors_per_frame - 1)) || |
| 1344 | (rq->nr_sectors & (sectors_per_frame - 1))) |
| 1345 | info->dma = 0; |
| 1346 | |
| 1347 | info->cmd = READ; |
| 1348 | |
| 1349 | /* Start sending the read request to the drive. */ |
| 1350 | return cdrom_start_packet_command(drive, 32768, cdrom_start_read_continuation); |
| 1351 | } |
| 1352 | |
| 1353 | /**************************************************************************** |
| 1354 | * Execute all other packet commands. |
| 1355 | */ |
| 1356 | |
| 1357 | /* Interrupt routine for packet command completion. */ |
| 1358 | static ide_startstop_t cdrom_pc_intr (ide_drive_t *drive) |
| 1359 | { |
| 1360 | int ireason, len, thislen; |
| 1361 | struct request *rq = HWGROUP(drive)->rq; |
| 1362 | u8 lowcyl = 0, highcyl = 0; |
| 1363 | int stat; |
| 1364 | |
| 1365 | /* Check for errors. */ |
| 1366 | if (cdrom_decode_status(drive, 0, &stat)) |
| 1367 | return ide_stopped; |
| 1368 | |
| 1369 | /* Read the interrupt reason and the transfer length. */ |
| 1370 | ireason = HWIF(drive)->INB(IDE_IREASON_REG); |
| 1371 | lowcyl = HWIF(drive)->INB(IDE_BCOUNTL_REG); |
| 1372 | highcyl = HWIF(drive)->INB(IDE_BCOUNTH_REG); |
| 1373 | |
| 1374 | len = lowcyl + (256 * highcyl); |
| 1375 | |
| 1376 | /* If DRQ is clear, the command has completed. |
| 1377 | Complain if we still have data left to transfer. */ |
| 1378 | if ((stat & DRQ_STAT) == 0) { |
| 1379 | /* Some of the trailing request sense fields are optional, and |
| 1380 | some drives don't send them. Sigh. */ |
| 1381 | if (rq->cmd[0] == GPCMD_REQUEST_SENSE && |
| 1382 | rq->data_len > 0 && |
| 1383 | rq->data_len <= 5) { |
| 1384 | while (rq->data_len > 0) { |
| 1385 | *(unsigned char *)rq->data++ = 0; |
| 1386 | --rq->data_len; |
| 1387 | } |
| 1388 | } |
| 1389 | |
| 1390 | if (rq->data_len == 0) |
| 1391 | cdrom_end_request(drive, 1); |
| 1392 | else { |
| 1393 | /* Comment this out, because this always happens |
| 1394 | right after a reset occurs, and it is annoying to |
| 1395 | always print expected stuff. */ |
| 1396 | /* |
| 1397 | printk ("%s: cdrom_pc_intr: data underrun %d\n", |
| 1398 | drive->name, pc->buflen); |
| 1399 | */ |
| 1400 | rq->flags |= REQ_FAILED; |
| 1401 | cdrom_end_request(drive, 0); |
| 1402 | } |
| 1403 | return ide_stopped; |
| 1404 | } |
| 1405 | |
| 1406 | /* Figure out how much data to transfer. */ |
| 1407 | thislen = rq->data_len; |
| 1408 | if (thislen > len) thislen = len; |
| 1409 | |
| 1410 | /* The drive wants to be written to. */ |
| 1411 | if ((ireason & 3) == 0) { |
| 1412 | if (!rq->data) { |
| 1413 | blk_dump_rq_flags(rq, "cdrom_pc_intr, write"); |
| 1414 | goto confused; |
| 1415 | } |
| 1416 | /* Transfer the data. */ |
| 1417 | HWIF(drive)->atapi_output_bytes(drive, rq->data, thislen); |
| 1418 | |
| 1419 | /* If we haven't moved enough data to satisfy the drive, |
| 1420 | add some padding. */ |
| 1421 | while (len > thislen) { |
| 1422 | int dum = 0; |
| 1423 | HWIF(drive)->atapi_output_bytes(drive, &dum, sizeof(dum)); |
| 1424 | len -= sizeof(dum); |
| 1425 | } |
| 1426 | |
| 1427 | /* Keep count of how much data we've moved. */ |
| 1428 | rq->data += thislen; |
| 1429 | rq->data_len -= thislen; |
| 1430 | } |
| 1431 | |
| 1432 | /* Same drill for reading. */ |
| 1433 | else if ((ireason & 3) == 2) { |
| 1434 | if (!rq->data) { |
| 1435 | blk_dump_rq_flags(rq, "cdrom_pc_intr, write"); |
| 1436 | goto confused; |
| 1437 | } |
| 1438 | /* Transfer the data. */ |
| 1439 | HWIF(drive)->atapi_input_bytes(drive, rq->data, thislen); |
| 1440 | |
| 1441 | /* If we haven't moved enough data to satisfy the drive, |
| 1442 | add some padding. */ |
| 1443 | while (len > thislen) { |
| 1444 | int dum = 0; |
| 1445 | HWIF(drive)->atapi_input_bytes(drive, &dum, sizeof(dum)); |
| 1446 | len -= sizeof(dum); |
| 1447 | } |
| 1448 | |
| 1449 | /* Keep count of how much data we've moved. */ |
| 1450 | rq->data += thislen; |
| 1451 | rq->data_len -= thislen; |
| 1452 | |
| 1453 | if (rq->flags & REQ_SENSE) |
| 1454 | rq->sense_len += thislen; |
| 1455 | } else { |
| 1456 | confused: |
| 1457 | printk (KERN_ERR "%s: cdrom_pc_intr: The drive " |
| 1458 | "appears confused (ireason = 0x%02x)\n", |
| 1459 | drive->name, ireason); |
| 1460 | rq->flags |= REQ_FAILED; |
| 1461 | } |
| 1462 | |
| 1463 | /* Now we wait for another interrupt. */ |
| 1464 | ide_set_handler(drive, &cdrom_pc_intr, ATAPI_WAIT_PC, cdrom_timer_expiry); |
| 1465 | return ide_started; |
| 1466 | } |
| 1467 | |
| 1468 | static ide_startstop_t cdrom_do_pc_continuation (ide_drive_t *drive) |
| 1469 | { |
| 1470 | struct request *rq = HWGROUP(drive)->rq; |
| 1471 | |
| 1472 | if (!rq->timeout) |
| 1473 | rq->timeout = ATAPI_WAIT_PC; |
| 1474 | |
| 1475 | /* Send the command to the drive and return. */ |
| 1476 | return cdrom_transfer_packet_command(drive, rq, &cdrom_pc_intr); |
| 1477 | } |
| 1478 | |
| 1479 | |
| 1480 | static ide_startstop_t cdrom_do_packet_command (ide_drive_t *drive) |
| 1481 | { |
| 1482 | int len; |
| 1483 | struct request *rq = HWGROUP(drive)->rq; |
| 1484 | struct cdrom_info *info = drive->driver_data; |
| 1485 | |
| 1486 | info->dma = 0; |
| 1487 | info->cmd = 0; |
| 1488 | rq->flags &= ~REQ_FAILED; |
| 1489 | len = rq->data_len; |
| 1490 | |
| 1491 | /* Start sending the command to the drive. */ |
| 1492 | return cdrom_start_packet_command(drive, len, cdrom_do_pc_continuation); |
| 1493 | } |
| 1494 | |
| 1495 | |
| 1496 | static |
| 1497 | int cdrom_queue_packet_command(ide_drive_t *drive, struct request *rq) |
| 1498 | { |
| 1499 | struct request_sense sense; |
| 1500 | int retries = 10; |
| 1501 | unsigned int flags = rq->flags; |
| 1502 | |
| 1503 | if (rq->sense == NULL) |
| 1504 | rq->sense = &sense; |
| 1505 | |
| 1506 | /* Start of retry loop. */ |
| 1507 | do { |
| 1508 | int error; |
| 1509 | unsigned long time = jiffies; |
| 1510 | rq->flags = flags; |
| 1511 | |
| 1512 | error = ide_do_drive_cmd(drive, rq, ide_wait); |
| 1513 | time = jiffies - time; |
| 1514 | |
| 1515 | /* FIXME: we should probably abort/retry or something |
| 1516 | * in case of failure */ |
| 1517 | if (rq->flags & REQ_FAILED) { |
| 1518 | /* The request failed. Retry if it was due to a unit |
| 1519 | attention status |
| 1520 | (usually means media was changed). */ |
| 1521 | struct request_sense *reqbuf = rq->sense; |
| 1522 | |
| 1523 | if (reqbuf->sense_key == UNIT_ATTENTION) |
| 1524 | cdrom_saw_media_change(drive); |
| 1525 | else if (reqbuf->sense_key == NOT_READY && |
| 1526 | reqbuf->asc == 4 && reqbuf->ascq != 4) { |
| 1527 | /* The drive is in the process of loading |
| 1528 | a disk. Retry, but wait a little to give |
| 1529 | the drive time to complete the load. */ |
| 1530 | ssleep(2); |
| 1531 | } else { |
| 1532 | /* Otherwise, don't retry. */ |
| 1533 | retries = 0; |
| 1534 | } |
| 1535 | --retries; |
| 1536 | } |
| 1537 | |
| 1538 | /* End of retry loop. */ |
| 1539 | } while ((rq->flags & REQ_FAILED) && retries >= 0); |
| 1540 | |
| 1541 | /* Return an error if the command failed. */ |
| 1542 | return (rq->flags & REQ_FAILED) ? -EIO : 0; |
| 1543 | } |
| 1544 | |
| 1545 | /* |
| 1546 | * Write handling |
| 1547 | */ |
| 1548 | static inline int cdrom_write_check_ireason(ide_drive_t *drive, int len, int ireason) |
| 1549 | { |
| 1550 | /* Two notes about IDE interrupt reason here - 0 means that |
| 1551 | * the drive wants to receive data from us, 2 means that |
| 1552 | * the drive is expecting to transfer data to us. |
| 1553 | */ |
| 1554 | if (ireason == 0) |
| 1555 | return 0; |
| 1556 | else if (ireason == 2) { |
| 1557 | /* Whoops... The drive wants to send data. */ |
| 1558 | printk(KERN_ERR "%s: write_intr: wrong transfer direction!\n", |
| 1559 | drive->name); |
| 1560 | |
| 1561 | while (len > 0) { |
| 1562 | int dum = 0; |
| 1563 | HWIF(drive)->atapi_input_bytes(drive, &dum, sizeof(dum)); |
| 1564 | len -= sizeof(dum); |
| 1565 | } |
| 1566 | } else { |
| 1567 | /* Drive wants a command packet, or invalid ireason... */ |
| 1568 | printk(KERN_ERR "%s: write_intr: bad interrupt reason %x\n", |
| 1569 | drive->name, ireason); |
| 1570 | } |
| 1571 | |
| 1572 | cdrom_end_request(drive, 0); |
| 1573 | return 1; |
| 1574 | } |
| 1575 | |
| 1576 | static void post_transform_command(struct request *req) |
| 1577 | { |
| 1578 | u8 *c = req->cmd; |
| 1579 | char *ibuf; |
| 1580 | |
| 1581 | if (!blk_pc_request(req)) |
| 1582 | return; |
| 1583 | |
| 1584 | if (req->bio) |
| 1585 | ibuf = bio_data(req->bio); |
| 1586 | else |
| 1587 | ibuf = req->data; |
| 1588 | |
| 1589 | if (!ibuf) |
| 1590 | return; |
| 1591 | |
| 1592 | /* |
| 1593 | * set ansi-revision and response data as atapi |
| 1594 | */ |
| 1595 | if (c[0] == GPCMD_INQUIRY) { |
| 1596 | ibuf[2] |= 2; |
| 1597 | ibuf[3] = (ibuf[3] & 0xf0) | 2; |
| 1598 | } |
| 1599 | } |
| 1600 | |
| 1601 | typedef void (xfer_func_t)(ide_drive_t *, void *, u32); |
| 1602 | |
| 1603 | /* |
| 1604 | * best way to deal with dma that is not sector aligned right now... note |
| 1605 | * that in this path we are not using ->data or ->buffer at all. this irs |
| 1606 | * can replace cdrom_pc_intr, cdrom_read_intr, and cdrom_write_intr in the |
| 1607 | * future. |
| 1608 | */ |
| 1609 | static ide_startstop_t cdrom_newpc_intr(ide_drive_t *drive) |
| 1610 | { |
| 1611 | struct cdrom_info *info = drive->driver_data; |
| 1612 | struct request *rq = HWGROUP(drive)->rq; |
| 1613 | int dma_error, dma, stat, ireason, len, thislen; |
| 1614 | u8 lowcyl, highcyl; |
| 1615 | xfer_func_t *xferfunc; |
| 1616 | unsigned long flags; |
| 1617 | |
| 1618 | /* Check for errors. */ |
| 1619 | dma_error = 0; |
| 1620 | dma = info->dma; |
| 1621 | if (dma) { |
| 1622 | info->dma = 0; |
| 1623 | dma_error = HWIF(drive)->ide_dma_end(drive); |
| 1624 | } |
| 1625 | |
| 1626 | if (cdrom_decode_status(drive, 0, &stat)) |
| 1627 | return ide_stopped; |
| 1628 | |
| 1629 | /* |
| 1630 | * using dma, transfer is complete now |
| 1631 | */ |
| 1632 | if (dma) { |
| 1633 | if (dma_error) { |
| 1634 | printk(KERN_ERR "ide-cd: dma error\n"); |
| 1635 | __ide_dma_off(drive); |
| 1636 | return ide_error(drive, "dma error", stat); |
| 1637 | } |
| 1638 | |
| 1639 | end_that_request_chunk(rq, 1, rq->data_len); |
| 1640 | rq->data_len = 0; |
| 1641 | goto end_request; |
| 1642 | } |
| 1643 | |
| 1644 | /* |
| 1645 | * ok we fall to pio :/ |
| 1646 | */ |
| 1647 | ireason = HWIF(drive)->INB(IDE_IREASON_REG) & 0x3; |
| 1648 | lowcyl = HWIF(drive)->INB(IDE_BCOUNTL_REG); |
| 1649 | highcyl = HWIF(drive)->INB(IDE_BCOUNTH_REG); |
| 1650 | |
| 1651 | len = lowcyl + (256 * highcyl); |
| 1652 | thislen = rq->data_len; |
| 1653 | if (thislen > len) |
| 1654 | thislen = len; |
| 1655 | |
| 1656 | /* |
| 1657 | * If DRQ is clear, the command has completed. |
| 1658 | */ |
| 1659 | if ((stat & DRQ_STAT) == 0) |
| 1660 | goto end_request; |
| 1661 | |
| 1662 | /* |
| 1663 | * check which way to transfer data |
| 1664 | */ |
| 1665 | if (rq_data_dir(rq) == WRITE) { |
| 1666 | /* |
| 1667 | * write to drive |
| 1668 | */ |
| 1669 | if (cdrom_write_check_ireason(drive, len, ireason)) |
| 1670 | return ide_stopped; |
| 1671 | |
| 1672 | xferfunc = HWIF(drive)->atapi_output_bytes; |
| 1673 | } else { |
| 1674 | /* |
| 1675 | * read from drive |
| 1676 | */ |
| 1677 | if (cdrom_read_check_ireason(drive, len, ireason)) |
| 1678 | return ide_stopped; |
| 1679 | |
| 1680 | xferfunc = HWIF(drive)->atapi_input_bytes; |
| 1681 | } |
| 1682 | |
| 1683 | /* |
| 1684 | * transfer data |
| 1685 | */ |
| 1686 | while (thislen > 0) { |
| 1687 | int blen = blen = rq->data_len; |
| 1688 | char *ptr = rq->data; |
| 1689 | |
| 1690 | /* |
| 1691 | * bio backed? |
| 1692 | */ |
| 1693 | if (rq->bio) { |
| 1694 | ptr = bio_data(rq->bio); |
| 1695 | blen = bio_iovec(rq->bio)->bv_len; |
| 1696 | } |
| 1697 | |
| 1698 | if (!ptr) { |
| 1699 | printk(KERN_ERR "%s: confused, missing data\n", drive->name); |
| 1700 | break; |
| 1701 | } |
| 1702 | |
| 1703 | if (blen > thislen) |
| 1704 | blen = thislen; |
| 1705 | |
| 1706 | xferfunc(drive, ptr, blen); |
| 1707 | |
| 1708 | thislen -= blen; |
| 1709 | len -= blen; |
| 1710 | rq->data_len -= blen; |
| 1711 | |
| 1712 | if (rq->bio) |
| 1713 | end_that_request_chunk(rq, 1, blen); |
| 1714 | else |
| 1715 | rq->data += blen; |
| 1716 | } |
| 1717 | |
| 1718 | /* |
| 1719 | * pad, if necessary |
| 1720 | */ |
| 1721 | if (len > 0) { |
| 1722 | while (len > 0) { |
| 1723 | int pad = 0; |
| 1724 | |
| 1725 | xferfunc(drive, &pad, sizeof(pad)); |
| 1726 | len -= sizeof(pad); |
| 1727 | } |
| 1728 | } |
| 1729 | |
| 1730 | if (HWGROUP(drive)->handler != NULL) |
| 1731 | BUG(); |
| 1732 | |
| 1733 | ide_set_handler(drive, cdrom_newpc_intr, rq->timeout, NULL); |
| 1734 | return ide_started; |
| 1735 | |
| 1736 | end_request: |
| 1737 | if (!rq->data_len) |
| 1738 | post_transform_command(rq); |
| 1739 | |
| 1740 | spin_lock_irqsave(&ide_lock, flags); |
| 1741 | blkdev_dequeue_request(rq); |
| 1742 | end_that_request_last(rq); |
| 1743 | HWGROUP(drive)->rq = NULL; |
| 1744 | spin_unlock_irqrestore(&ide_lock, flags); |
| 1745 | return ide_stopped; |
| 1746 | } |
| 1747 | |
| 1748 | static ide_startstop_t cdrom_write_intr(ide_drive_t *drive) |
| 1749 | { |
| 1750 | int stat, ireason, len, sectors_to_transfer, uptodate; |
| 1751 | struct cdrom_info *info = drive->driver_data; |
| 1752 | int dma_error = 0, dma = info->dma; |
| 1753 | u8 lowcyl = 0, highcyl = 0; |
| 1754 | |
| 1755 | struct request *rq = HWGROUP(drive)->rq; |
| 1756 | |
| 1757 | /* Check for errors. */ |
| 1758 | if (dma) { |
| 1759 | info->dma = 0; |
| 1760 | if ((dma_error = HWIF(drive)->ide_dma_end(drive))) { |
| 1761 | printk(KERN_ERR "ide-cd: write dma error\n"); |
| 1762 | __ide_dma_off(drive); |
| 1763 | } |
| 1764 | } |
| 1765 | |
| 1766 | if (cdrom_decode_status(drive, 0, &stat)) |
| 1767 | return ide_stopped; |
| 1768 | |
| 1769 | /* |
| 1770 | * using dma, transfer is complete now |
| 1771 | */ |
| 1772 | if (dma) { |
| 1773 | if (dma_error) |
| 1774 | return ide_error(drive, "dma error", stat); |
| 1775 | |
| 1776 | ide_end_request(drive, 1, rq->nr_sectors); |
| 1777 | return ide_stopped; |
| 1778 | } |
| 1779 | |
| 1780 | /* Read the interrupt reason and the transfer length. */ |
| 1781 | ireason = HWIF(drive)->INB(IDE_IREASON_REG); |
| 1782 | lowcyl = HWIF(drive)->INB(IDE_BCOUNTL_REG); |
| 1783 | highcyl = HWIF(drive)->INB(IDE_BCOUNTH_REG); |
| 1784 | |
| 1785 | len = lowcyl + (256 * highcyl); |
| 1786 | |
| 1787 | /* If DRQ is clear, the command has completed. */ |
| 1788 | if ((stat & DRQ_STAT) == 0) { |
| 1789 | /* If we're not done writing, complain. |
| 1790 | * Otherwise, complete the command normally. |
| 1791 | */ |
| 1792 | uptodate = 1; |
| 1793 | if (rq->current_nr_sectors > 0) { |
| 1794 | printk(KERN_ERR "%s: write_intr: data underrun (%d blocks)\n", |
| 1795 | drive->name, rq->current_nr_sectors); |
| 1796 | uptodate = 0; |
| 1797 | } |
| 1798 | cdrom_end_request(drive, uptodate); |
| 1799 | return ide_stopped; |
| 1800 | } |
| 1801 | |
| 1802 | /* Check that the drive is expecting to do the same thing we are. */ |
| 1803 | if (cdrom_write_check_ireason(drive, len, ireason)) |
| 1804 | return ide_stopped; |
| 1805 | |
| 1806 | sectors_to_transfer = len / SECTOR_SIZE; |
| 1807 | |
| 1808 | /* |
| 1809 | * now loop and write out the data |
| 1810 | */ |
| 1811 | while (sectors_to_transfer > 0) { |
| 1812 | int this_transfer; |
| 1813 | |
| 1814 | if (!rq->current_nr_sectors) { |
| 1815 | printk(KERN_ERR "ide-cd: write_intr: oops\n"); |
| 1816 | break; |
| 1817 | } |
| 1818 | |
| 1819 | /* |
| 1820 | * Figure out how many sectors we can transfer |
| 1821 | */ |
| 1822 | this_transfer = min_t(int, sectors_to_transfer, rq->current_nr_sectors); |
| 1823 | |
| 1824 | while (this_transfer > 0) { |
| 1825 | HWIF(drive)->atapi_output_bytes(drive, rq->buffer, SECTOR_SIZE); |
| 1826 | rq->buffer += SECTOR_SIZE; |
| 1827 | --rq->nr_sectors; |
| 1828 | --rq->current_nr_sectors; |
| 1829 | ++rq->sector; |
| 1830 | --this_transfer; |
| 1831 | --sectors_to_transfer; |
| 1832 | } |
| 1833 | |
| 1834 | /* |
| 1835 | * current buffer complete, move on |
| 1836 | */ |
| 1837 | if (rq->current_nr_sectors == 0 && rq->nr_sectors) |
| 1838 | cdrom_end_request(drive, 1); |
| 1839 | } |
| 1840 | |
| 1841 | /* re-arm handler */ |
| 1842 | ide_set_handler(drive, &cdrom_write_intr, ATAPI_WAIT_PC, NULL); |
| 1843 | return ide_started; |
| 1844 | } |
| 1845 | |
| 1846 | static ide_startstop_t cdrom_start_write_cont(ide_drive_t *drive) |
| 1847 | { |
| 1848 | struct request *rq = HWGROUP(drive)->rq; |
| 1849 | |
| 1850 | #if 0 /* the immediate bit */ |
| 1851 | rq->cmd[1] = 1 << 3; |
| 1852 | #endif |
| 1853 | rq->timeout = ATAPI_WAIT_PC; |
| 1854 | |
| 1855 | return cdrom_transfer_packet_command(drive, rq, cdrom_write_intr); |
| 1856 | } |
| 1857 | |
| 1858 | static ide_startstop_t cdrom_start_write(ide_drive_t *drive, struct request *rq) |
| 1859 | { |
| 1860 | struct cdrom_info *info = drive->driver_data; |
| 1861 | struct gendisk *g = info->disk; |
| 1862 | unsigned short sectors_per_frame = queue_hardsect_size(drive->queue) >> SECTOR_BITS; |
| 1863 | |
| 1864 | /* |
| 1865 | * writes *must* be hardware frame aligned |
| 1866 | */ |
| 1867 | if ((rq->nr_sectors & (sectors_per_frame - 1)) || |
| 1868 | (rq->sector & (sectors_per_frame - 1))) { |
| 1869 | cdrom_end_request(drive, 0); |
| 1870 | return ide_stopped; |
| 1871 | } |
| 1872 | |
| 1873 | /* |
| 1874 | * disk has become write protected |
| 1875 | */ |
| 1876 | if (g->policy) { |
| 1877 | cdrom_end_request(drive, 0); |
| 1878 | return ide_stopped; |
| 1879 | } |
| 1880 | |
| 1881 | /* |
| 1882 | * for dvd-ram and such media, it's a really big deal to get |
| 1883 | * big writes all the time. so scour the queue and attempt to |
| 1884 | * remerge requests, often the plugging will not have had time |
| 1885 | * to do this properly |
| 1886 | */ |
| 1887 | blk_attempt_remerge(drive->queue, rq); |
| 1888 | |
| 1889 | info->nsectors_buffered = 0; |
| 1890 | |
| 1891 | /* use dma, if possible. we don't need to check more, since we |
| 1892 | * know that the transfer is always (at least!) frame aligned */ |
| 1893 | info->dma = drive->using_dma ? 1 : 0; |
| 1894 | info->cmd = WRITE; |
| 1895 | |
| 1896 | info->devinfo.media_written = 1; |
| 1897 | |
| 1898 | /* Start sending the write request to the drive. */ |
| 1899 | return cdrom_start_packet_command(drive, 32768, cdrom_start_write_cont); |
| 1900 | } |
| 1901 | |
| 1902 | static ide_startstop_t cdrom_do_newpc_cont(ide_drive_t *drive) |
| 1903 | { |
| 1904 | struct request *rq = HWGROUP(drive)->rq; |
| 1905 | |
| 1906 | if (!rq->timeout) |
| 1907 | rq->timeout = ATAPI_WAIT_PC; |
| 1908 | |
| 1909 | return cdrom_transfer_packet_command(drive, rq, cdrom_newpc_intr); |
| 1910 | } |
| 1911 | |
| 1912 | static ide_startstop_t cdrom_do_block_pc(ide_drive_t *drive, struct request *rq) |
| 1913 | { |
| 1914 | struct cdrom_info *info = drive->driver_data; |
| 1915 | |
| 1916 | rq->flags |= REQ_QUIET; |
| 1917 | |
| 1918 | info->dma = 0; |
| 1919 | info->cmd = 0; |
| 1920 | |
| 1921 | /* |
| 1922 | * sg request |
| 1923 | */ |
| 1924 | if (rq->bio) { |
| 1925 | int mask = drive->queue->dma_alignment; |
| 1926 | unsigned long addr = (unsigned long) page_address(bio_page(rq->bio)); |
| 1927 | |
| 1928 | info->cmd = rq_data_dir(rq); |
| 1929 | info->dma = drive->using_dma; |
| 1930 | |
| 1931 | /* |
| 1932 | * check if dma is safe |
Linus Torvalds | 5d9e4ea | 2005-05-27 07:36:17 -0700 | [diff] [blame] | 1933 | * |
| 1934 | * NOTE! The "len" and "addr" checks should possibly have |
| 1935 | * separate masks. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1936 | */ |
Jens Axboe | 4e7c681 | 2005-05-31 17:47:36 +0200 | [diff] [blame] | 1937 | if ((rq->data_len & 15) || (addr & mask)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1938 | info->dma = 0; |
| 1939 | } |
| 1940 | |
| 1941 | /* Start sending the command to the drive. */ |
| 1942 | return cdrom_start_packet_command(drive, rq->data_len, cdrom_do_newpc_cont); |
| 1943 | } |
| 1944 | |
| 1945 | /**************************************************************************** |
| 1946 | * cdrom driver request routine. |
| 1947 | */ |
| 1948 | static ide_startstop_t |
| 1949 | ide_do_rw_cdrom (ide_drive_t *drive, struct request *rq, sector_t block) |
| 1950 | { |
| 1951 | ide_startstop_t action; |
| 1952 | struct cdrom_info *info = drive->driver_data; |
| 1953 | |
| 1954 | if (blk_fs_request(rq)) { |
| 1955 | if (CDROM_CONFIG_FLAGS(drive)->seeking) { |
| 1956 | unsigned long elapsed = jiffies - info->start_seek; |
| 1957 | int stat = HWIF(drive)->INB(IDE_STATUS_REG); |
| 1958 | |
| 1959 | if ((stat & SEEK_STAT) != SEEK_STAT) { |
| 1960 | if (elapsed < IDECD_SEEK_TIMEOUT) { |
| 1961 | ide_stall_queue(drive, IDECD_SEEK_TIMER); |
| 1962 | return ide_stopped; |
| 1963 | } |
| 1964 | printk (KERN_ERR "%s: DSC timeout\n", drive->name); |
| 1965 | } |
| 1966 | CDROM_CONFIG_FLAGS(drive)->seeking = 0; |
| 1967 | } |
| 1968 | if ((rq_data_dir(rq) == READ) && IDE_LARGE_SEEK(info->last_block, block, IDECD_SEEK_THRESHOLD) && drive->dsc_overlap) { |
| 1969 | action = cdrom_start_seek(drive, block); |
| 1970 | } else { |
| 1971 | if (rq_data_dir(rq) == READ) |
| 1972 | action = cdrom_start_read(drive, block); |
| 1973 | else |
| 1974 | action = cdrom_start_write(drive, rq); |
| 1975 | } |
| 1976 | info->last_block = block; |
| 1977 | return action; |
| 1978 | } else if (rq->flags & (REQ_PC | REQ_SENSE)) { |
| 1979 | return cdrom_do_packet_command(drive); |
| 1980 | } else if (rq->flags & REQ_BLOCK_PC) { |
| 1981 | return cdrom_do_block_pc(drive, rq); |
| 1982 | } else if (rq->flags & REQ_SPECIAL) { |
| 1983 | /* |
| 1984 | * right now this can only be a reset... |
| 1985 | */ |
| 1986 | cdrom_end_request(drive, 1); |
| 1987 | return ide_stopped; |
| 1988 | } |
| 1989 | |
| 1990 | blk_dump_rq_flags(rq, "ide-cd bad flags"); |
| 1991 | cdrom_end_request(drive, 0); |
| 1992 | return ide_stopped; |
| 1993 | } |
| 1994 | |
| 1995 | |
| 1996 | |
| 1997 | /**************************************************************************** |
| 1998 | * Ioctl handling. |
| 1999 | * |
| 2000 | * Routines which queue packet commands take as a final argument a pointer |
| 2001 | * to a request_sense struct. If execution of the command results |
| 2002 | * in an error with a CHECK CONDITION status, this structure will be filled |
| 2003 | * with the results of the subsequent request sense command. The pointer |
| 2004 | * can also be NULL, in which case no sense information is returned. |
| 2005 | */ |
| 2006 | |
| 2007 | #if ! STANDARD_ATAPI |
| 2008 | static inline |
| 2009 | int bin2bcd (int x) |
| 2010 | { |
| 2011 | return (x%10) | ((x/10) << 4); |
| 2012 | } |
| 2013 | |
| 2014 | |
| 2015 | static inline |
| 2016 | int bcd2bin (int x) |
| 2017 | { |
| 2018 | return (x >> 4) * 10 + (x & 0x0f); |
| 2019 | } |
| 2020 | |
| 2021 | static |
| 2022 | void msf_from_bcd (struct atapi_msf *msf) |
| 2023 | { |
| 2024 | msf->minute = bcd2bin (msf->minute); |
| 2025 | msf->second = bcd2bin (msf->second); |
| 2026 | msf->frame = bcd2bin (msf->frame); |
| 2027 | } |
| 2028 | |
| 2029 | #endif /* not STANDARD_ATAPI */ |
| 2030 | |
| 2031 | |
| 2032 | static inline |
| 2033 | void lba_to_msf (int lba, byte *m, byte *s, byte *f) |
| 2034 | { |
| 2035 | lba += CD_MSF_OFFSET; |
| 2036 | lba &= 0xffffff; /* negative lbas use only 24 bits */ |
| 2037 | *m = lba / (CD_SECS * CD_FRAMES); |
| 2038 | lba %= (CD_SECS * CD_FRAMES); |
| 2039 | *s = lba / CD_FRAMES; |
| 2040 | *f = lba % CD_FRAMES; |
| 2041 | } |
| 2042 | |
| 2043 | |
| 2044 | static inline |
| 2045 | int msf_to_lba (byte m, byte s, byte f) |
| 2046 | { |
| 2047 | return (((m * CD_SECS) + s) * CD_FRAMES + f) - CD_MSF_OFFSET; |
| 2048 | } |
| 2049 | |
| 2050 | static int cdrom_check_status(ide_drive_t *drive, struct request_sense *sense) |
| 2051 | { |
| 2052 | struct request req; |
| 2053 | struct cdrom_info *info = drive->driver_data; |
| 2054 | struct cdrom_device_info *cdi = &info->devinfo; |
| 2055 | |
| 2056 | cdrom_prepare_request(drive, &req); |
| 2057 | |
| 2058 | req.sense = sense; |
| 2059 | req.cmd[0] = GPCMD_TEST_UNIT_READY; |
| 2060 | req.flags |= REQ_QUIET; |
| 2061 | |
| 2062 | #if ! STANDARD_ATAPI |
| 2063 | /* the Sanyo 3 CD changer uses byte 7 of TEST_UNIT_READY to |
| 2064 | switch CDs instead of supporting the LOAD_UNLOAD opcode */ |
| 2065 | |
| 2066 | req.cmd[7] = cdi->sanyo_slot % 3; |
| 2067 | #endif /* not STANDARD_ATAPI */ |
| 2068 | |
| 2069 | return cdrom_queue_packet_command(drive, &req); |
| 2070 | } |
| 2071 | |
| 2072 | |
| 2073 | /* Lock the door if LOCKFLAG is nonzero; unlock it otherwise. */ |
| 2074 | static int |
| 2075 | cdrom_lockdoor(ide_drive_t *drive, int lockflag, struct request_sense *sense) |
| 2076 | { |
| 2077 | struct request_sense my_sense; |
| 2078 | struct request req; |
| 2079 | int stat; |
| 2080 | |
| 2081 | if (sense == NULL) |
| 2082 | sense = &my_sense; |
| 2083 | |
| 2084 | /* If the drive cannot lock the door, just pretend. */ |
| 2085 | if (CDROM_CONFIG_FLAGS(drive)->no_doorlock) { |
| 2086 | stat = 0; |
| 2087 | } else { |
| 2088 | cdrom_prepare_request(drive, &req); |
| 2089 | req.sense = sense; |
| 2090 | req.cmd[0] = GPCMD_PREVENT_ALLOW_MEDIUM_REMOVAL; |
| 2091 | req.cmd[4] = lockflag ? 1 : 0; |
| 2092 | stat = cdrom_queue_packet_command(drive, &req); |
| 2093 | } |
| 2094 | |
| 2095 | /* If we got an illegal field error, the drive |
| 2096 | probably cannot lock the door. */ |
| 2097 | if (stat != 0 && |
| 2098 | sense->sense_key == ILLEGAL_REQUEST && |
| 2099 | (sense->asc == 0x24 || sense->asc == 0x20)) { |
| 2100 | printk (KERN_ERR "%s: door locking not supported\n", |
| 2101 | drive->name); |
| 2102 | CDROM_CONFIG_FLAGS(drive)->no_doorlock = 1; |
| 2103 | stat = 0; |
| 2104 | } |
| 2105 | |
| 2106 | /* no medium, that's alright. */ |
| 2107 | if (stat != 0 && sense->sense_key == NOT_READY && sense->asc == 0x3a) |
| 2108 | stat = 0; |
| 2109 | |
| 2110 | if (stat == 0) |
| 2111 | CDROM_STATE_FLAGS(drive)->door_locked = lockflag; |
| 2112 | |
| 2113 | return stat; |
| 2114 | } |
| 2115 | |
| 2116 | |
| 2117 | /* Eject the disk if EJECTFLAG is 0. |
| 2118 | If EJECTFLAG is 1, try to reload the disk. */ |
| 2119 | static int cdrom_eject(ide_drive_t *drive, int ejectflag, |
| 2120 | struct request_sense *sense) |
| 2121 | { |
| 2122 | struct request req; |
| 2123 | char loej = 0x02; |
| 2124 | |
| 2125 | if (CDROM_CONFIG_FLAGS(drive)->no_eject && !ejectflag) |
| 2126 | return -EDRIVE_CANT_DO_THIS; |
| 2127 | |
| 2128 | /* reload fails on some drives, if the tray is locked */ |
| 2129 | if (CDROM_STATE_FLAGS(drive)->door_locked && ejectflag) |
| 2130 | return 0; |
| 2131 | |
| 2132 | cdrom_prepare_request(drive, &req); |
| 2133 | |
| 2134 | /* only tell drive to close tray if open, if it can do that */ |
| 2135 | if (ejectflag && !CDROM_CONFIG_FLAGS(drive)->close_tray) |
| 2136 | loej = 0; |
| 2137 | |
| 2138 | req.sense = sense; |
| 2139 | req.cmd[0] = GPCMD_START_STOP_UNIT; |
| 2140 | req.cmd[4] = loej | (ejectflag != 0); |
| 2141 | return cdrom_queue_packet_command(drive, &req); |
| 2142 | } |
| 2143 | |
| 2144 | static int cdrom_read_capacity(ide_drive_t *drive, unsigned long *capacity, |
| 2145 | unsigned long *sectors_per_frame, |
| 2146 | struct request_sense *sense) |
| 2147 | { |
| 2148 | struct { |
| 2149 | __u32 lba; |
| 2150 | __u32 blocklen; |
| 2151 | } capbuf; |
| 2152 | |
| 2153 | int stat; |
| 2154 | struct request req; |
| 2155 | |
| 2156 | cdrom_prepare_request(drive, &req); |
| 2157 | |
| 2158 | req.sense = sense; |
| 2159 | req.cmd[0] = GPCMD_READ_CDVD_CAPACITY; |
| 2160 | req.data = (char *)&capbuf; |
| 2161 | req.data_len = sizeof(capbuf); |
| 2162 | |
| 2163 | stat = cdrom_queue_packet_command(drive, &req); |
| 2164 | if (stat == 0) { |
| 2165 | *capacity = 1 + be32_to_cpu(capbuf.lba); |
| 2166 | *sectors_per_frame = |
| 2167 | be32_to_cpu(capbuf.blocklen) >> SECTOR_BITS; |
| 2168 | } |
| 2169 | |
| 2170 | return stat; |
| 2171 | } |
| 2172 | |
| 2173 | static int cdrom_read_tocentry(ide_drive_t *drive, int trackno, int msf_flag, |
| 2174 | int format, char *buf, int buflen, |
| 2175 | struct request_sense *sense) |
| 2176 | { |
| 2177 | struct request req; |
| 2178 | |
| 2179 | cdrom_prepare_request(drive, &req); |
| 2180 | |
| 2181 | req.sense = sense; |
| 2182 | req.data = buf; |
| 2183 | req.data_len = buflen; |
| 2184 | req.flags |= REQ_QUIET; |
| 2185 | req.cmd[0] = GPCMD_READ_TOC_PMA_ATIP; |
| 2186 | req.cmd[6] = trackno; |
| 2187 | req.cmd[7] = (buflen >> 8); |
| 2188 | req.cmd[8] = (buflen & 0xff); |
| 2189 | req.cmd[9] = (format << 6); |
| 2190 | |
| 2191 | if (msf_flag) |
| 2192 | req.cmd[1] = 2; |
| 2193 | |
| 2194 | return cdrom_queue_packet_command(drive, &req); |
| 2195 | } |
| 2196 | |
| 2197 | |
| 2198 | /* Try to read the entire TOC for the disk into our internal buffer. */ |
| 2199 | static int cdrom_read_toc(ide_drive_t *drive, struct request_sense *sense) |
| 2200 | { |
| 2201 | int stat, ntracks, i; |
| 2202 | struct cdrom_info *info = drive->driver_data; |
| 2203 | struct cdrom_device_info *cdi = &info->devinfo; |
| 2204 | struct atapi_toc *toc = info->toc; |
| 2205 | struct { |
| 2206 | struct atapi_toc_header hdr; |
| 2207 | struct atapi_toc_entry ent; |
| 2208 | } ms_tmp; |
| 2209 | long last_written; |
| 2210 | unsigned long sectors_per_frame = SECTORS_PER_FRAME; |
| 2211 | |
| 2212 | if (toc == NULL) { |
| 2213 | /* Try to allocate space. */ |
| 2214 | toc = (struct atapi_toc *) kmalloc (sizeof (struct atapi_toc), |
| 2215 | GFP_KERNEL); |
| 2216 | info->toc = toc; |
| 2217 | if (toc == NULL) { |
| 2218 | printk (KERN_ERR "%s: No cdrom TOC buffer!\n", drive->name); |
| 2219 | return -ENOMEM; |
| 2220 | } |
| 2221 | } |
| 2222 | |
| 2223 | /* Check to see if the existing data is still valid. |
| 2224 | If it is, just return. */ |
| 2225 | (void) cdrom_check_status(drive, sense); |
| 2226 | |
| 2227 | if (CDROM_STATE_FLAGS(drive)->toc_valid) |
| 2228 | return 0; |
| 2229 | |
| 2230 | /* Try to get the total cdrom capacity and sector size. */ |
| 2231 | stat = cdrom_read_capacity(drive, &toc->capacity, §ors_per_frame, |
| 2232 | sense); |
| 2233 | if (stat) |
| 2234 | toc->capacity = 0x1fffff; |
| 2235 | |
| 2236 | set_capacity(info->disk, toc->capacity * sectors_per_frame); |
| 2237 | blk_queue_hardsect_size(drive->queue, |
| 2238 | sectors_per_frame << SECTOR_BITS); |
| 2239 | |
| 2240 | /* First read just the header, so we know how long the TOC is. */ |
| 2241 | stat = cdrom_read_tocentry(drive, 0, 1, 0, (char *) &toc->hdr, |
| 2242 | sizeof(struct atapi_toc_header), sense); |
| 2243 | if (stat) return stat; |
| 2244 | |
| 2245 | #if ! STANDARD_ATAPI |
| 2246 | if (CDROM_CONFIG_FLAGS(drive)->toctracks_as_bcd) { |
| 2247 | toc->hdr.first_track = bcd2bin(toc->hdr.first_track); |
| 2248 | toc->hdr.last_track = bcd2bin(toc->hdr.last_track); |
| 2249 | } |
| 2250 | #endif /* not STANDARD_ATAPI */ |
| 2251 | |
| 2252 | ntracks = toc->hdr.last_track - toc->hdr.first_track + 1; |
| 2253 | if (ntracks <= 0) |
| 2254 | return -EIO; |
| 2255 | if (ntracks > MAX_TRACKS) |
| 2256 | ntracks = MAX_TRACKS; |
| 2257 | |
| 2258 | /* Now read the whole schmeer. */ |
| 2259 | stat = cdrom_read_tocentry(drive, toc->hdr.first_track, 1, 0, |
| 2260 | (char *)&toc->hdr, |
| 2261 | sizeof(struct atapi_toc_header) + |
| 2262 | (ntracks + 1) * |
| 2263 | sizeof(struct atapi_toc_entry), sense); |
| 2264 | |
| 2265 | if (stat && toc->hdr.first_track > 1) { |
| 2266 | /* Cds with CDI tracks only don't have any TOC entries, |
| 2267 | despite of this the returned values are |
| 2268 | first_track == last_track = number of CDI tracks + 1, |
| 2269 | so that this case is indistinguishable from the same |
| 2270 | layout plus an additional audio track. |
| 2271 | If we get an error for the regular case, we assume |
| 2272 | a CDI without additional audio tracks. In this case |
| 2273 | the readable TOC is empty (CDI tracks are not included) |
| 2274 | and only holds the Leadout entry. Heiko Eißfeldt */ |
| 2275 | ntracks = 0; |
| 2276 | stat = cdrom_read_tocentry(drive, CDROM_LEADOUT, 1, 0, |
| 2277 | (char *)&toc->hdr, |
| 2278 | sizeof(struct atapi_toc_header) + |
| 2279 | (ntracks + 1) * |
| 2280 | sizeof(struct atapi_toc_entry), |
| 2281 | sense); |
| 2282 | if (stat) { |
| 2283 | return stat; |
| 2284 | } |
| 2285 | #if ! STANDARD_ATAPI |
| 2286 | if (CDROM_CONFIG_FLAGS(drive)->toctracks_as_bcd) { |
| 2287 | toc->hdr.first_track = bin2bcd(CDROM_LEADOUT); |
| 2288 | toc->hdr.last_track = bin2bcd(CDROM_LEADOUT); |
| 2289 | } else |
| 2290 | #endif /* not STANDARD_ATAPI */ |
| 2291 | { |
| 2292 | toc->hdr.first_track = CDROM_LEADOUT; |
| 2293 | toc->hdr.last_track = CDROM_LEADOUT; |
| 2294 | } |
| 2295 | } |
| 2296 | |
| 2297 | if (stat) |
| 2298 | return stat; |
| 2299 | |
| 2300 | toc->hdr.toc_length = ntohs (toc->hdr.toc_length); |
| 2301 | |
| 2302 | #if ! STANDARD_ATAPI |
| 2303 | if (CDROM_CONFIG_FLAGS(drive)->toctracks_as_bcd) { |
| 2304 | toc->hdr.first_track = bcd2bin(toc->hdr.first_track); |
| 2305 | toc->hdr.last_track = bcd2bin(toc->hdr.last_track); |
| 2306 | } |
| 2307 | #endif /* not STANDARD_ATAPI */ |
| 2308 | |
| 2309 | for (i=0; i<=ntracks; i++) { |
| 2310 | #if ! STANDARD_ATAPI |
| 2311 | if (CDROM_CONFIG_FLAGS(drive)->tocaddr_as_bcd) { |
| 2312 | if (CDROM_CONFIG_FLAGS(drive)->toctracks_as_bcd) |
| 2313 | toc->ent[i].track = bcd2bin(toc->ent[i].track); |
| 2314 | msf_from_bcd(&toc->ent[i].addr.msf); |
| 2315 | } |
| 2316 | #endif /* not STANDARD_ATAPI */ |
| 2317 | toc->ent[i].addr.lba = msf_to_lba (toc->ent[i].addr.msf.minute, |
| 2318 | toc->ent[i].addr.msf.second, |
| 2319 | toc->ent[i].addr.msf.frame); |
| 2320 | } |
| 2321 | |
| 2322 | /* Read the multisession information. */ |
| 2323 | if (toc->hdr.first_track != CDROM_LEADOUT) { |
| 2324 | /* Read the multisession information. */ |
| 2325 | stat = cdrom_read_tocentry(drive, 0, 0, 1, (char *)&ms_tmp, |
| 2326 | sizeof(ms_tmp), sense); |
| 2327 | if (stat) return stat; |
| 2328 | |
| 2329 | toc->last_session_lba = be32_to_cpu(ms_tmp.ent.addr.lba); |
| 2330 | } else { |
| 2331 | ms_tmp.hdr.first_track = ms_tmp.hdr.last_track = CDROM_LEADOUT; |
| 2332 | toc->last_session_lba = msf_to_lba(0, 2, 0); /* 0m 2s 0f */ |
| 2333 | } |
| 2334 | |
| 2335 | #if ! STANDARD_ATAPI |
| 2336 | if (CDROM_CONFIG_FLAGS(drive)->tocaddr_as_bcd) { |
| 2337 | /* Re-read multisession information using MSF format */ |
| 2338 | stat = cdrom_read_tocentry(drive, 0, 1, 1, (char *)&ms_tmp, |
| 2339 | sizeof(ms_tmp), sense); |
| 2340 | if (stat) |
| 2341 | return stat; |
| 2342 | |
| 2343 | msf_from_bcd (&ms_tmp.ent.addr.msf); |
| 2344 | toc->last_session_lba = msf_to_lba(ms_tmp.ent.addr.msf.minute, |
| 2345 | ms_tmp.ent.addr.msf.second, |
| 2346 | ms_tmp.ent.addr.msf.frame); |
| 2347 | } |
| 2348 | #endif /* not STANDARD_ATAPI */ |
| 2349 | |
| 2350 | toc->xa_flag = (ms_tmp.hdr.first_track != ms_tmp.hdr.last_track); |
| 2351 | |
| 2352 | /* Now try to get the total cdrom capacity. */ |
| 2353 | stat = cdrom_get_last_written(cdi, &last_written); |
| 2354 | if (!stat && (last_written > toc->capacity)) { |
| 2355 | toc->capacity = last_written; |
| 2356 | set_capacity(info->disk, toc->capacity * sectors_per_frame); |
| 2357 | } |
| 2358 | |
| 2359 | /* Remember that we've read this stuff. */ |
| 2360 | CDROM_STATE_FLAGS(drive)->toc_valid = 1; |
| 2361 | |
| 2362 | return 0; |
| 2363 | } |
| 2364 | |
| 2365 | |
| 2366 | static int cdrom_read_subchannel(ide_drive_t *drive, int format, char *buf, |
| 2367 | int buflen, struct request_sense *sense) |
| 2368 | { |
| 2369 | struct request req; |
| 2370 | |
| 2371 | cdrom_prepare_request(drive, &req); |
| 2372 | |
| 2373 | req.sense = sense; |
| 2374 | req.data = buf; |
| 2375 | req.data_len = buflen; |
| 2376 | req.cmd[0] = GPCMD_READ_SUBCHANNEL; |
| 2377 | req.cmd[1] = 2; /* MSF addressing */ |
| 2378 | req.cmd[2] = 0x40; /* request subQ data */ |
| 2379 | req.cmd[3] = format; |
| 2380 | req.cmd[7] = (buflen >> 8); |
| 2381 | req.cmd[8] = (buflen & 0xff); |
| 2382 | return cdrom_queue_packet_command(drive, &req); |
| 2383 | } |
| 2384 | |
| 2385 | /* ATAPI cdrom drives are free to select the speed you request or any slower |
| 2386 | rate :-( Requesting too fast a speed will _not_ produce an error. */ |
| 2387 | static int cdrom_select_speed(ide_drive_t *drive, int speed, |
| 2388 | struct request_sense *sense) |
| 2389 | { |
| 2390 | struct request req; |
| 2391 | cdrom_prepare_request(drive, &req); |
| 2392 | |
| 2393 | req.sense = sense; |
| 2394 | if (speed == 0) |
| 2395 | speed = 0xffff; /* set to max */ |
| 2396 | else |
| 2397 | speed *= 177; /* Nx to kbytes/s */ |
| 2398 | |
| 2399 | req.cmd[0] = GPCMD_SET_SPEED; |
| 2400 | /* Read Drive speed in kbytes/second MSB */ |
| 2401 | req.cmd[2] = (speed >> 8) & 0xff; |
| 2402 | /* Read Drive speed in kbytes/second LSB */ |
| 2403 | req.cmd[3] = speed & 0xff; |
| 2404 | if (CDROM_CONFIG_FLAGS(drive)->cd_r || |
| 2405 | CDROM_CONFIG_FLAGS(drive)->cd_rw || |
| 2406 | CDROM_CONFIG_FLAGS(drive)->dvd_r) { |
| 2407 | /* Write Drive speed in kbytes/second MSB */ |
| 2408 | req.cmd[4] = (speed >> 8) & 0xff; |
| 2409 | /* Write Drive speed in kbytes/second LSB */ |
| 2410 | req.cmd[5] = speed & 0xff; |
| 2411 | } |
| 2412 | |
| 2413 | return cdrom_queue_packet_command(drive, &req); |
| 2414 | } |
| 2415 | |
| 2416 | static int cdrom_play_audio(ide_drive_t *drive, int lba_start, int lba_end) |
| 2417 | { |
| 2418 | struct request_sense sense; |
| 2419 | struct request req; |
| 2420 | |
| 2421 | cdrom_prepare_request(drive, &req); |
| 2422 | |
| 2423 | req.sense = &sense; |
| 2424 | req.cmd[0] = GPCMD_PLAY_AUDIO_MSF; |
| 2425 | lba_to_msf(lba_start, &req.cmd[3], &req.cmd[4], &req.cmd[5]); |
| 2426 | lba_to_msf(lba_end-1, &req.cmd[6], &req.cmd[7], &req.cmd[8]); |
| 2427 | |
| 2428 | return cdrom_queue_packet_command(drive, &req); |
| 2429 | } |
| 2430 | |
| 2431 | static int cdrom_get_toc_entry(ide_drive_t *drive, int track, |
| 2432 | struct atapi_toc_entry **ent) |
| 2433 | { |
| 2434 | struct cdrom_info *info = drive->driver_data; |
| 2435 | struct atapi_toc *toc = info->toc; |
| 2436 | int ntracks; |
| 2437 | |
| 2438 | /* |
| 2439 | * don't serve cached data, if the toc isn't valid |
| 2440 | */ |
| 2441 | if (!CDROM_STATE_FLAGS(drive)->toc_valid) |
| 2442 | return -EINVAL; |
| 2443 | |
| 2444 | /* Check validity of requested track number. */ |
| 2445 | ntracks = toc->hdr.last_track - toc->hdr.first_track + 1; |
| 2446 | if (toc->hdr.first_track == CDROM_LEADOUT) ntracks = 0; |
| 2447 | if (track == CDROM_LEADOUT) |
| 2448 | *ent = &toc->ent[ntracks]; |
| 2449 | else if (track < toc->hdr.first_track || |
| 2450 | track > toc->hdr.last_track) |
| 2451 | return -EINVAL; |
| 2452 | else |
| 2453 | *ent = &toc->ent[track - toc->hdr.first_track]; |
| 2454 | |
| 2455 | return 0; |
| 2456 | } |
| 2457 | |
| 2458 | /* the generic packet interface to cdrom.c */ |
| 2459 | static int ide_cdrom_packet(struct cdrom_device_info *cdi, |
| 2460 | struct packet_command *cgc) |
| 2461 | { |
| 2462 | struct request req; |
| 2463 | ide_drive_t *drive = (ide_drive_t*) cdi->handle; |
| 2464 | |
| 2465 | if (cgc->timeout <= 0) |
| 2466 | cgc->timeout = ATAPI_WAIT_PC; |
| 2467 | |
| 2468 | /* here we queue the commands from the uniform CD-ROM |
| 2469 | layer. the packet must be complete, as we do not |
| 2470 | touch it at all. */ |
| 2471 | cdrom_prepare_request(drive, &req); |
| 2472 | memcpy(req.cmd, cgc->cmd, CDROM_PACKET_SIZE); |
| 2473 | if (cgc->sense) |
| 2474 | memset(cgc->sense, 0, sizeof(struct request_sense)); |
| 2475 | req.data = cgc->buffer; |
| 2476 | req.data_len = cgc->buflen; |
| 2477 | req.timeout = cgc->timeout; |
| 2478 | |
| 2479 | if (cgc->quiet) |
| 2480 | req.flags |= REQ_QUIET; |
| 2481 | |
| 2482 | req.sense = cgc->sense; |
| 2483 | cgc->stat = cdrom_queue_packet_command(drive, &req); |
| 2484 | if (!cgc->stat) |
| 2485 | cgc->buflen -= req.data_len; |
| 2486 | return cgc->stat; |
| 2487 | } |
| 2488 | |
| 2489 | static |
| 2490 | int ide_cdrom_dev_ioctl (struct cdrom_device_info *cdi, |
| 2491 | unsigned int cmd, unsigned long arg) |
| 2492 | { |
| 2493 | struct packet_command cgc; |
| 2494 | char buffer[16]; |
| 2495 | int stat; |
| 2496 | |
| 2497 | init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_UNKNOWN); |
| 2498 | |
| 2499 | /* These will be moved into the Uniform layer shortly... */ |
| 2500 | switch (cmd) { |
| 2501 | case CDROMSETSPINDOWN: { |
| 2502 | char spindown; |
| 2503 | |
| 2504 | if (copy_from_user(&spindown, (void __user *) arg, sizeof(char))) |
| 2505 | return -EFAULT; |
| 2506 | |
| 2507 | if ((stat = cdrom_mode_sense(cdi, &cgc, GPMODE_CDROM_PAGE, 0))) |
| 2508 | return stat; |
| 2509 | |
| 2510 | buffer[11] = (buffer[11] & 0xf0) | (spindown & 0x0f); |
| 2511 | |
| 2512 | return cdrom_mode_select(cdi, &cgc); |
| 2513 | } |
| 2514 | |
| 2515 | case CDROMGETSPINDOWN: { |
| 2516 | char spindown; |
| 2517 | |
| 2518 | if ((stat = cdrom_mode_sense(cdi, &cgc, GPMODE_CDROM_PAGE, 0))) |
| 2519 | return stat; |
| 2520 | |
| 2521 | spindown = buffer[11] & 0x0f; |
| 2522 | |
| 2523 | if (copy_to_user((void __user *) arg, &spindown, sizeof (char))) |
| 2524 | return -EFAULT; |
| 2525 | |
| 2526 | return 0; |
| 2527 | } |
| 2528 | |
| 2529 | default: |
| 2530 | return -EINVAL; |
| 2531 | } |
| 2532 | |
| 2533 | } |
| 2534 | |
| 2535 | static |
| 2536 | int ide_cdrom_audio_ioctl (struct cdrom_device_info *cdi, |
| 2537 | unsigned int cmd, void *arg) |
| 2538 | |
| 2539 | { |
| 2540 | ide_drive_t *drive = (ide_drive_t*) cdi->handle; |
| 2541 | struct cdrom_info *info = drive->driver_data; |
| 2542 | int stat; |
| 2543 | |
| 2544 | switch (cmd) { |
| 2545 | /* |
| 2546 | * emulate PLAY_AUDIO_TI command with PLAY_AUDIO_10, since |
| 2547 | * atapi doesn't support it |
| 2548 | */ |
| 2549 | case CDROMPLAYTRKIND: { |
| 2550 | unsigned long lba_start, lba_end; |
| 2551 | struct cdrom_ti *ti = (struct cdrom_ti *)arg; |
| 2552 | struct atapi_toc_entry *first_toc, *last_toc; |
| 2553 | |
| 2554 | stat = cdrom_get_toc_entry(drive, ti->cdti_trk0, &first_toc); |
| 2555 | if (stat) |
| 2556 | return stat; |
| 2557 | |
| 2558 | stat = cdrom_get_toc_entry(drive, ti->cdti_trk1, &last_toc); |
| 2559 | if (stat) |
| 2560 | return stat; |
| 2561 | |
| 2562 | if (ti->cdti_trk1 != CDROM_LEADOUT) |
| 2563 | ++last_toc; |
| 2564 | lba_start = first_toc->addr.lba; |
| 2565 | lba_end = last_toc->addr.lba; |
| 2566 | |
| 2567 | if (lba_end <= lba_start) |
| 2568 | return -EINVAL; |
| 2569 | |
| 2570 | return cdrom_play_audio(drive, lba_start, lba_end); |
| 2571 | } |
| 2572 | |
| 2573 | case CDROMREADTOCHDR: { |
| 2574 | struct cdrom_tochdr *tochdr = (struct cdrom_tochdr *) arg; |
| 2575 | struct atapi_toc *toc; |
| 2576 | |
| 2577 | /* Make sure our saved TOC is valid. */ |
| 2578 | stat = cdrom_read_toc(drive, NULL); |
| 2579 | if (stat) return stat; |
| 2580 | |
| 2581 | toc = info->toc; |
| 2582 | tochdr->cdth_trk0 = toc->hdr.first_track; |
| 2583 | tochdr->cdth_trk1 = toc->hdr.last_track; |
| 2584 | |
| 2585 | return 0; |
| 2586 | } |
| 2587 | |
| 2588 | case CDROMREADTOCENTRY: { |
| 2589 | struct cdrom_tocentry *tocentry = (struct cdrom_tocentry*) arg; |
| 2590 | struct atapi_toc_entry *toce; |
| 2591 | |
| 2592 | stat = cdrom_get_toc_entry(drive, tocentry->cdte_track, &toce); |
| 2593 | if (stat) return stat; |
| 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 | { |
| 2616 | ide_drive_t *drive = (ide_drive_t*) cdi->handle; |
| 2617 | struct request_sense sense; |
| 2618 | struct request req; |
| 2619 | int ret; |
| 2620 | |
| 2621 | cdrom_prepare_request(drive, &req); |
| 2622 | req.flags = REQ_SPECIAL | REQ_QUIET; |
| 2623 | ret = ide_do_drive_cmd(drive, &req, ide_wait); |
| 2624 | |
| 2625 | /* |
| 2626 | * A reset will unlock the door. If it was previously locked, |
| 2627 | * lock it again. |
| 2628 | */ |
| 2629 | if (CDROM_STATE_FLAGS(drive)->door_locked) |
| 2630 | (void) cdrom_lockdoor(drive, 1, &sense); |
| 2631 | |
| 2632 | return ret; |
| 2633 | } |
| 2634 | |
| 2635 | |
| 2636 | static |
| 2637 | int ide_cdrom_tray_move (struct cdrom_device_info *cdi, int position) |
| 2638 | { |
| 2639 | ide_drive_t *drive = (ide_drive_t*) cdi->handle; |
| 2640 | struct request_sense sense; |
| 2641 | |
| 2642 | if (position) { |
| 2643 | int stat = cdrom_lockdoor(drive, 0, &sense); |
| 2644 | if (stat) return stat; |
| 2645 | } |
| 2646 | |
| 2647 | return cdrom_eject(drive, !position, &sense); |
| 2648 | } |
| 2649 | |
| 2650 | static |
| 2651 | int ide_cdrom_lock_door (struct cdrom_device_info *cdi, int lock) |
| 2652 | { |
| 2653 | ide_drive_t *drive = (ide_drive_t*) cdi->handle; |
| 2654 | return cdrom_lockdoor(drive, lock, NULL); |
| 2655 | } |
| 2656 | |
| 2657 | static |
Eric Piel | 9235e68 | 2005-06-23 00:10:29 -0700 | [diff] [blame] | 2658 | int ide_cdrom_get_capabilities(ide_drive_t *drive, struct atapi_capabilities_page *cap) |
| 2659 | { |
| 2660 | struct cdrom_info *info = drive->driver_data; |
| 2661 | struct cdrom_device_info *cdi = &info->devinfo; |
| 2662 | struct packet_command cgc; |
| 2663 | int stat, attempts = 3, size = sizeof(*cap); |
| 2664 | |
| 2665 | /* |
| 2666 | * ACER50 (and others?) require the full spec length mode sense |
| 2667 | * page capabilities size, but older drives break. |
| 2668 | */ |
| 2669 | if (!(!strcmp(drive->id->model, "ATAPI CD ROM DRIVE 50X MAX") || |
| 2670 | !strcmp(drive->id->model, "WPI CDS-32X"))) |
| 2671 | size -= sizeof(cap->pad); |
| 2672 | |
| 2673 | init_cdrom_command(&cgc, cap, size, CGC_DATA_UNKNOWN); |
| 2674 | do { /* we seem to get stat=0x01,err=0x00 the first time (??) */ |
| 2675 | stat = cdrom_mode_sense(cdi, &cgc, GPMODE_CAPABILITIES_PAGE, 0); |
| 2676 | if (!stat) |
| 2677 | break; |
| 2678 | } while (--attempts); |
| 2679 | return stat; |
| 2680 | } |
| 2681 | |
| 2682 | static |
| 2683 | void ide_cdrom_update_speed (ide_drive_t *drive, struct atapi_capabilities_page *cap) |
| 2684 | { |
| 2685 | /* The ACER/AOpen 24X cdrom has the speed fields byte-swapped */ |
| 2686 | if (!drive->id->model[0] && |
| 2687 | !strncmp(drive->id->fw_rev, "241N", 4)) { |
| 2688 | CDROM_STATE_FLAGS(drive)->current_speed = |
| 2689 | (((unsigned int)cap->curspeed) + (176/2)) / 176; |
| 2690 | CDROM_CONFIG_FLAGS(drive)->max_speed = |
| 2691 | (((unsigned int)cap->maxspeed) + (176/2)) / 176; |
| 2692 | } else { |
| 2693 | CDROM_STATE_FLAGS(drive)->current_speed = |
| 2694 | (ntohs(cap->curspeed) + (176/2)) / 176; |
| 2695 | CDROM_CONFIG_FLAGS(drive)->max_speed = |
| 2696 | (ntohs(cap->maxspeed) + (176/2)) / 176; |
| 2697 | } |
| 2698 | } |
| 2699 | |
| 2700 | static |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2701 | int ide_cdrom_select_speed (struct cdrom_device_info *cdi, int speed) |
| 2702 | { |
| 2703 | ide_drive_t *drive = (ide_drive_t*) cdi->handle; |
| 2704 | struct request_sense sense; |
Eric Piel | 9235e68 | 2005-06-23 00:10:29 -0700 | [diff] [blame] | 2705 | struct atapi_capabilities_page cap; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2706 | int stat; |
| 2707 | |
| 2708 | if ((stat = cdrom_select_speed(drive, speed, &sense)) < 0) |
| 2709 | return stat; |
| 2710 | |
Eric Piel | 9235e68 | 2005-06-23 00:10:29 -0700 | [diff] [blame] | 2711 | if (!ide_cdrom_get_capabilities(drive, &cap)) { |
| 2712 | ide_cdrom_update_speed(drive, &cap); |
| 2713 | cdi->speed = CDROM_STATE_FLAGS(drive)->current_speed; |
| 2714 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2715 | return 0; |
| 2716 | } |
| 2717 | |
| 2718 | /* |
| 2719 | * add logic to try GET_EVENT command first to check for media and tray |
| 2720 | * status. this should be supported by newer cd-r/w and all DVD etc |
| 2721 | * drives |
| 2722 | */ |
| 2723 | static |
| 2724 | int ide_cdrom_drive_status (struct cdrom_device_info *cdi, int slot_nr) |
| 2725 | { |
| 2726 | ide_drive_t *drive = (ide_drive_t*) cdi->handle; |
| 2727 | struct media_event_desc med; |
| 2728 | struct request_sense sense; |
| 2729 | int stat; |
| 2730 | |
| 2731 | if (slot_nr != CDSL_CURRENT) |
| 2732 | return -EINVAL; |
| 2733 | |
| 2734 | stat = cdrom_check_status(drive, &sense); |
| 2735 | if (!stat || sense.sense_key == UNIT_ATTENTION) |
| 2736 | return CDS_DISC_OK; |
| 2737 | |
| 2738 | if (!cdrom_get_media_event(cdi, &med)) { |
| 2739 | if (med.media_present) |
| 2740 | return CDS_DISC_OK; |
| 2741 | else if (med.door_open) |
| 2742 | return CDS_TRAY_OPEN; |
| 2743 | else |
| 2744 | return CDS_NO_DISC; |
| 2745 | } |
| 2746 | |
| 2747 | if (sense.sense_key == NOT_READY && sense.asc == 0x04 && sense.ascq == 0x04) |
| 2748 | return CDS_DISC_OK; |
| 2749 | |
| 2750 | /* |
| 2751 | * If not using Mt Fuji extended media tray reports, |
| 2752 | * just return TRAY_OPEN since ATAPI doesn't provide |
| 2753 | * any other way to detect this... |
| 2754 | */ |
| 2755 | if (sense.sense_key == NOT_READY) { |
| 2756 | if (sense.asc == 0x3a) { |
| 2757 | if (sense.ascq == 1) |
| 2758 | return CDS_NO_DISC; |
| 2759 | else if (sense.ascq == 0 || sense.ascq == 2) |
| 2760 | return CDS_TRAY_OPEN; |
| 2761 | } |
| 2762 | } |
| 2763 | |
| 2764 | return CDS_DRIVE_NOT_READY; |
| 2765 | } |
| 2766 | |
| 2767 | static |
| 2768 | int ide_cdrom_get_last_session (struct cdrom_device_info *cdi, |
| 2769 | struct cdrom_multisession *ms_info) |
| 2770 | { |
| 2771 | struct atapi_toc *toc; |
| 2772 | ide_drive_t *drive = (ide_drive_t*) cdi->handle; |
| 2773 | struct cdrom_info *info = drive->driver_data; |
| 2774 | struct request_sense sense; |
| 2775 | int ret; |
| 2776 | |
| 2777 | if (!CDROM_STATE_FLAGS(drive)->toc_valid || info->toc == NULL) |
| 2778 | if ((ret = cdrom_read_toc(drive, &sense))) |
| 2779 | return ret; |
| 2780 | |
| 2781 | toc = info->toc; |
| 2782 | ms_info->addr.lba = toc->last_session_lba; |
| 2783 | ms_info->xa_flag = toc->xa_flag; |
| 2784 | |
| 2785 | return 0; |
| 2786 | } |
| 2787 | |
| 2788 | static |
| 2789 | int ide_cdrom_get_mcn (struct cdrom_device_info *cdi, |
| 2790 | struct cdrom_mcn *mcn_info) |
| 2791 | { |
| 2792 | int stat; |
| 2793 | char mcnbuf[24]; |
| 2794 | ide_drive_t *drive = (ide_drive_t*) cdi->handle; |
| 2795 | |
| 2796 | /* get MCN */ |
| 2797 | if ((stat = cdrom_read_subchannel(drive, 2, mcnbuf, sizeof (mcnbuf), NULL))) |
| 2798 | return stat; |
| 2799 | |
| 2800 | memcpy (mcn_info->medium_catalog_number, mcnbuf+9, |
| 2801 | sizeof (mcn_info->medium_catalog_number)-1); |
| 2802 | mcn_info->medium_catalog_number[sizeof (mcn_info->medium_catalog_number)-1] |
| 2803 | = '\0'; |
| 2804 | |
| 2805 | return 0; |
| 2806 | } |
| 2807 | |
| 2808 | |
| 2809 | |
| 2810 | /**************************************************************************** |
| 2811 | * Other driver requests (open, close, check media change). |
| 2812 | */ |
| 2813 | |
| 2814 | static |
| 2815 | int ide_cdrom_check_media_change_real (struct cdrom_device_info *cdi, |
| 2816 | int slot_nr) |
| 2817 | { |
| 2818 | ide_drive_t *drive = (ide_drive_t*) cdi->handle; |
| 2819 | int retval; |
| 2820 | |
| 2821 | if (slot_nr == CDSL_CURRENT) { |
| 2822 | (void) cdrom_check_status(drive, NULL); |
| 2823 | retval = CDROM_STATE_FLAGS(drive)->media_changed; |
| 2824 | CDROM_STATE_FLAGS(drive)->media_changed = 0; |
| 2825 | return retval; |
| 2826 | } else { |
| 2827 | return -EINVAL; |
| 2828 | } |
| 2829 | } |
| 2830 | |
| 2831 | |
| 2832 | static |
| 2833 | int ide_cdrom_open_real (struct cdrom_device_info *cdi, int purpose) |
| 2834 | { |
| 2835 | return 0; |
| 2836 | } |
| 2837 | |
| 2838 | /* |
| 2839 | * Close down the device. Invalidate all cached blocks. |
| 2840 | */ |
| 2841 | |
| 2842 | static |
| 2843 | void ide_cdrom_release_real (struct cdrom_device_info *cdi) |
| 2844 | { |
| 2845 | ide_drive_t *drive = cdi->handle; |
| 2846 | |
| 2847 | if (!cdi->use_count) |
| 2848 | CDROM_STATE_FLAGS(drive)->toc_valid = 0; |
| 2849 | } |
| 2850 | |
| 2851 | |
| 2852 | |
| 2853 | /**************************************************************************** |
| 2854 | * Device initialization. |
| 2855 | */ |
| 2856 | static struct cdrom_device_ops ide_cdrom_dops = { |
| 2857 | .open = ide_cdrom_open_real, |
| 2858 | .release = ide_cdrom_release_real, |
| 2859 | .drive_status = ide_cdrom_drive_status, |
| 2860 | .media_changed = ide_cdrom_check_media_change_real, |
| 2861 | .tray_move = ide_cdrom_tray_move, |
| 2862 | .lock_door = ide_cdrom_lock_door, |
| 2863 | .select_speed = ide_cdrom_select_speed, |
| 2864 | .get_last_session = ide_cdrom_get_last_session, |
| 2865 | .get_mcn = ide_cdrom_get_mcn, |
| 2866 | .reset = ide_cdrom_reset, |
| 2867 | .audio_ioctl = ide_cdrom_audio_ioctl, |
| 2868 | .dev_ioctl = ide_cdrom_dev_ioctl, |
| 2869 | .capability = CDC_CLOSE_TRAY | CDC_OPEN_TRAY | CDC_LOCK | |
| 2870 | CDC_SELECT_SPEED | CDC_SELECT_DISC | |
| 2871 | CDC_MULTI_SESSION | CDC_MCN | |
| 2872 | CDC_MEDIA_CHANGED | CDC_PLAY_AUDIO | CDC_RESET | |
| 2873 | CDC_IOCTLS | CDC_DRIVE_STATUS | CDC_CD_R | |
| 2874 | CDC_CD_RW | CDC_DVD | CDC_DVD_R| CDC_DVD_RAM | |
| 2875 | CDC_GENERIC_PACKET | CDC_MO_DRIVE | CDC_MRW | |
| 2876 | CDC_MRW_W | CDC_RAM, |
| 2877 | .generic_packet = ide_cdrom_packet, |
| 2878 | }; |
| 2879 | |
| 2880 | static int ide_cdrom_register (ide_drive_t *drive, int nslots) |
| 2881 | { |
| 2882 | struct cdrom_info *info = drive->driver_data; |
| 2883 | struct cdrom_device_info *devinfo = &info->devinfo; |
| 2884 | |
| 2885 | devinfo->ops = &ide_cdrom_dops; |
| 2886 | devinfo->mask = 0; |
| 2887 | devinfo->speed = CDROM_STATE_FLAGS(drive)->current_speed; |
| 2888 | devinfo->capacity = nslots; |
| 2889 | devinfo->handle = (void *) drive; |
| 2890 | strcpy(devinfo->name, drive->name); |
| 2891 | |
| 2892 | /* set capability mask to match the probe. */ |
| 2893 | if (!CDROM_CONFIG_FLAGS(drive)->cd_r) |
| 2894 | devinfo->mask |= CDC_CD_R; |
| 2895 | if (!CDROM_CONFIG_FLAGS(drive)->cd_rw) |
| 2896 | devinfo->mask |= CDC_CD_RW; |
| 2897 | if (!CDROM_CONFIG_FLAGS(drive)->dvd) |
| 2898 | devinfo->mask |= CDC_DVD; |
| 2899 | if (!CDROM_CONFIG_FLAGS(drive)->dvd_r) |
| 2900 | devinfo->mask |= CDC_DVD_R; |
| 2901 | if (!CDROM_CONFIG_FLAGS(drive)->dvd_ram) |
| 2902 | devinfo->mask |= CDC_DVD_RAM; |
| 2903 | if (!CDROM_CONFIG_FLAGS(drive)->is_changer) |
| 2904 | devinfo->mask |= CDC_SELECT_DISC; |
| 2905 | if (!CDROM_CONFIG_FLAGS(drive)->audio_play) |
| 2906 | devinfo->mask |= CDC_PLAY_AUDIO; |
| 2907 | if (!CDROM_CONFIG_FLAGS(drive)->close_tray) |
| 2908 | devinfo->mask |= CDC_CLOSE_TRAY; |
| 2909 | if (!CDROM_CONFIG_FLAGS(drive)->mo_drive) |
| 2910 | devinfo->mask |= CDC_MO_DRIVE; |
| 2911 | |
| 2912 | devinfo->disk = info->disk; |
| 2913 | return register_cdrom(devinfo); |
| 2914 | } |
| 2915 | |
| 2916 | static |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2917 | int ide_cdrom_probe_capabilities (ide_drive_t *drive) |
| 2918 | { |
| 2919 | struct cdrom_info *info = drive->driver_data; |
| 2920 | struct cdrom_device_info *cdi = &info->devinfo; |
| 2921 | struct atapi_capabilities_page cap; |
| 2922 | int nslots = 1; |
| 2923 | |
| 2924 | if (drive->media == ide_optical) { |
| 2925 | CDROM_CONFIG_FLAGS(drive)->mo_drive = 1; |
| 2926 | CDROM_CONFIG_FLAGS(drive)->ram = 1; |
| 2927 | printk(KERN_ERR "%s: ATAPI magneto-optical drive\n", drive->name); |
| 2928 | return nslots; |
| 2929 | } |
| 2930 | |
| 2931 | if (CDROM_CONFIG_FLAGS(drive)->nec260 || |
| 2932 | !strcmp(drive->id->model,"STINGRAY 8422 IDE 8X CD-ROM 7-27-95")) { |
| 2933 | CDROM_CONFIG_FLAGS(drive)->no_eject = 0; |
| 2934 | CDROM_CONFIG_FLAGS(drive)->audio_play = 1; |
| 2935 | return nslots; |
| 2936 | } |
| 2937 | |
| 2938 | /* |
| 2939 | * we have to cheat a little here. the packet will eventually |
| 2940 | * be queued with ide_cdrom_packet(), which extracts the |
| 2941 | * drive from cdi->handle. Since this device hasn't been |
| 2942 | * registered with the Uniform layer yet, it can't do this. |
| 2943 | * Same goes for cdi->ops. |
| 2944 | */ |
| 2945 | cdi->handle = (ide_drive_t *) drive; |
| 2946 | cdi->ops = &ide_cdrom_dops; |
| 2947 | |
| 2948 | if (ide_cdrom_get_capabilities(drive, &cap)) |
| 2949 | return 0; |
| 2950 | |
| 2951 | if (cap.lock == 0) |
| 2952 | CDROM_CONFIG_FLAGS(drive)->no_doorlock = 1; |
| 2953 | if (cap.eject) |
| 2954 | CDROM_CONFIG_FLAGS(drive)->no_eject = 0; |
| 2955 | if (cap.cd_r_write) |
| 2956 | CDROM_CONFIG_FLAGS(drive)->cd_r = 1; |
| 2957 | if (cap.cd_rw_write) { |
| 2958 | CDROM_CONFIG_FLAGS(drive)->cd_rw = 1; |
| 2959 | CDROM_CONFIG_FLAGS(drive)->ram = 1; |
| 2960 | } |
| 2961 | if (cap.test_write) |
| 2962 | CDROM_CONFIG_FLAGS(drive)->test_write = 1; |
| 2963 | if (cap.dvd_ram_read || cap.dvd_r_read || cap.dvd_rom) |
| 2964 | CDROM_CONFIG_FLAGS(drive)->dvd = 1; |
| 2965 | if (cap.dvd_ram_write) { |
| 2966 | CDROM_CONFIG_FLAGS(drive)->dvd_ram = 1; |
| 2967 | CDROM_CONFIG_FLAGS(drive)->ram = 1; |
| 2968 | } |
| 2969 | if (cap.dvd_r_write) |
| 2970 | CDROM_CONFIG_FLAGS(drive)->dvd_r = 1; |
| 2971 | if (cap.audio_play) |
| 2972 | CDROM_CONFIG_FLAGS(drive)->audio_play = 1; |
| 2973 | if (cap.mechtype == mechtype_caddy || cap.mechtype == mechtype_popup) |
| 2974 | CDROM_CONFIG_FLAGS(drive)->close_tray = 0; |
| 2975 | |
| 2976 | /* Some drives used by Apple don't advertise audio play |
| 2977 | * but they do support reading TOC & audio datas |
| 2978 | */ |
| 2979 | if (strcmp(drive->id->model, "MATSHITADVD-ROM SR-8187") == 0 || |
| 2980 | strcmp(drive->id->model, "MATSHITADVD-ROM SR-8186") == 0 || |
| 2981 | strcmp(drive->id->model, "MATSHITADVD-ROM SR-8176") == 0 || |
| 2982 | strcmp(drive->id->model, "MATSHITADVD-ROM SR-8174") == 0) |
| 2983 | CDROM_CONFIG_FLAGS(drive)->audio_play = 1; |
| 2984 | |
| 2985 | #if ! STANDARD_ATAPI |
| 2986 | if (cdi->sanyo_slot > 0) { |
| 2987 | CDROM_CONFIG_FLAGS(drive)->is_changer = 1; |
| 2988 | nslots = 3; |
| 2989 | } |
| 2990 | |
| 2991 | else |
| 2992 | #endif /* not STANDARD_ATAPI */ |
| 2993 | if (cap.mechtype == mechtype_individual_changer || |
| 2994 | cap.mechtype == mechtype_cartridge_changer) { |
| 2995 | if ((nslots = cdrom_number_of_slots(cdi)) > 1) { |
| 2996 | CDROM_CONFIG_FLAGS(drive)->is_changer = 1; |
| 2997 | CDROM_CONFIG_FLAGS(drive)->supp_disc_present = 1; |
| 2998 | } |
| 2999 | } |
| 3000 | |
Eric Piel | 9235e68 | 2005-06-23 00:10:29 -0700 | [diff] [blame] | 3001 | ide_cdrom_update_speed(drive, &cap); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3002 | /* don't print speed if the drive reported 0. |
| 3003 | */ |
| 3004 | printk(KERN_INFO "%s: ATAPI", drive->name); |
| 3005 | if (CDROM_CONFIG_FLAGS(drive)->max_speed) |
| 3006 | printk(" %dX", CDROM_CONFIG_FLAGS(drive)->max_speed); |
| 3007 | printk(" %s", CDROM_CONFIG_FLAGS(drive)->dvd ? "DVD-ROM" : "CD-ROM"); |
| 3008 | |
| 3009 | if (CDROM_CONFIG_FLAGS(drive)->dvd_r|CDROM_CONFIG_FLAGS(drive)->dvd_ram) |
| 3010 | printk(" DVD%s%s", |
| 3011 | (CDROM_CONFIG_FLAGS(drive)->dvd_r)? "-R" : "", |
| 3012 | (CDROM_CONFIG_FLAGS(drive)->dvd_ram)? "-RAM" : ""); |
| 3013 | |
| 3014 | if (CDROM_CONFIG_FLAGS(drive)->cd_r|CDROM_CONFIG_FLAGS(drive)->cd_rw) |
| 3015 | printk(" CD%s%s", |
| 3016 | (CDROM_CONFIG_FLAGS(drive)->cd_r)? "-R" : "", |
| 3017 | (CDROM_CONFIG_FLAGS(drive)->cd_rw)? "/RW" : ""); |
| 3018 | |
| 3019 | if (CDROM_CONFIG_FLAGS(drive)->is_changer) |
| 3020 | printk(" changer w/%d slots", nslots); |
| 3021 | else |
| 3022 | printk(" drive"); |
| 3023 | |
| 3024 | printk(", %dkB Cache", be16_to_cpu(cap.buffer_size)); |
| 3025 | |
| 3026 | if (drive->using_dma) |
| 3027 | ide_dma_verbose(drive); |
| 3028 | |
| 3029 | printk("\n"); |
| 3030 | |
| 3031 | return nslots; |
| 3032 | } |
| 3033 | |
| 3034 | static void ide_cdrom_add_settings(ide_drive_t *drive) |
| 3035 | { |
| 3036 | ide_add_setting(drive, "dsc_overlap", SETTING_RW, -1, -1, TYPE_BYTE, 0, 1, 1, 1, &drive->dsc_overlap, NULL); |
| 3037 | } |
| 3038 | |
| 3039 | /* |
| 3040 | * standard prep_rq_fn that builds 10 byte cmds |
| 3041 | */ |
| 3042 | static int ide_cdrom_prep_fs(request_queue_t *q, struct request *rq) |
| 3043 | { |
| 3044 | int hard_sect = queue_hardsect_size(q); |
| 3045 | long block = (long)rq->hard_sector / (hard_sect >> 9); |
| 3046 | unsigned long blocks = rq->hard_nr_sectors / (hard_sect >> 9); |
| 3047 | |
| 3048 | memset(rq->cmd, 0, sizeof(rq->cmd)); |
| 3049 | |
| 3050 | if (rq_data_dir(rq) == READ) |
| 3051 | rq->cmd[0] = GPCMD_READ_10; |
| 3052 | else |
| 3053 | rq->cmd[0] = GPCMD_WRITE_10; |
| 3054 | |
| 3055 | /* |
| 3056 | * fill in lba |
| 3057 | */ |
| 3058 | rq->cmd[2] = (block >> 24) & 0xff; |
| 3059 | rq->cmd[3] = (block >> 16) & 0xff; |
| 3060 | rq->cmd[4] = (block >> 8) & 0xff; |
| 3061 | rq->cmd[5] = block & 0xff; |
| 3062 | |
| 3063 | /* |
| 3064 | * and transfer length |
| 3065 | */ |
| 3066 | rq->cmd[7] = (blocks >> 8) & 0xff; |
| 3067 | rq->cmd[8] = blocks & 0xff; |
| 3068 | rq->cmd_len = 10; |
| 3069 | return BLKPREP_OK; |
| 3070 | } |
| 3071 | |
| 3072 | /* |
| 3073 | * Most of the SCSI commands are supported directly by ATAPI devices. |
| 3074 | * This transform handles the few exceptions. |
| 3075 | */ |
| 3076 | static int ide_cdrom_prep_pc(struct request *rq) |
| 3077 | { |
| 3078 | u8 *c = rq->cmd; |
| 3079 | |
| 3080 | /* |
| 3081 | * Transform 6-byte read/write commands to the 10-byte version |
| 3082 | */ |
| 3083 | if (c[0] == READ_6 || c[0] == WRITE_6) { |
| 3084 | c[8] = c[4]; |
| 3085 | c[5] = c[3]; |
| 3086 | c[4] = c[2]; |
| 3087 | c[3] = c[1] & 0x1f; |
| 3088 | c[2] = 0; |
| 3089 | c[1] &= 0xe0; |
| 3090 | c[0] += (READ_10 - READ_6); |
| 3091 | rq->cmd_len = 10; |
| 3092 | return BLKPREP_OK; |
| 3093 | } |
| 3094 | |
| 3095 | /* |
| 3096 | * it's silly to pretend we understand 6-byte sense commands, just |
| 3097 | * reject with ILLEGAL_REQUEST and the caller should take the |
| 3098 | * appropriate action |
| 3099 | */ |
| 3100 | if (c[0] == MODE_SENSE || c[0] == MODE_SELECT) { |
| 3101 | rq->errors = ILLEGAL_REQUEST; |
| 3102 | return BLKPREP_KILL; |
| 3103 | } |
| 3104 | |
| 3105 | return BLKPREP_OK; |
| 3106 | } |
| 3107 | |
| 3108 | static int ide_cdrom_prep_fn(request_queue_t *q, struct request *rq) |
| 3109 | { |
| 3110 | if (rq->flags & REQ_CMD) |
| 3111 | return ide_cdrom_prep_fs(q, rq); |
| 3112 | else if (rq->flags & REQ_BLOCK_PC) |
| 3113 | return ide_cdrom_prep_pc(rq); |
| 3114 | |
| 3115 | return 0; |
| 3116 | } |
| 3117 | |
| 3118 | static |
| 3119 | int ide_cdrom_setup (ide_drive_t *drive) |
| 3120 | { |
| 3121 | struct cdrom_info *info = drive->driver_data; |
| 3122 | struct cdrom_device_info *cdi = &info->devinfo; |
| 3123 | int nslots; |
| 3124 | |
| 3125 | blk_queue_prep_rq(drive->queue, ide_cdrom_prep_fn); |
| 3126 | blk_queue_dma_alignment(drive->queue, 31); |
| 3127 | drive->queue->unplug_delay = (1 * HZ) / 1000; |
| 3128 | if (!drive->queue->unplug_delay) |
| 3129 | drive->queue->unplug_delay = 1; |
| 3130 | |
| 3131 | drive->special.all = 0; |
| 3132 | |
| 3133 | CDROM_STATE_FLAGS(drive)->media_changed = 1; |
| 3134 | CDROM_STATE_FLAGS(drive)->toc_valid = 0; |
| 3135 | CDROM_STATE_FLAGS(drive)->door_locked = 0; |
| 3136 | |
| 3137 | #if NO_DOOR_LOCKING |
| 3138 | CDROM_CONFIG_FLAGS(drive)->no_doorlock = 1; |
| 3139 | #else |
| 3140 | CDROM_CONFIG_FLAGS(drive)->no_doorlock = 0; |
| 3141 | #endif |
| 3142 | |
| 3143 | CDROM_CONFIG_FLAGS(drive)->drq_interrupt = ((drive->id->config & 0x0060) == 0x20); |
| 3144 | CDROM_CONFIG_FLAGS(drive)->is_changer = 0; |
| 3145 | CDROM_CONFIG_FLAGS(drive)->cd_r = 0; |
| 3146 | CDROM_CONFIG_FLAGS(drive)->cd_rw = 0; |
| 3147 | CDROM_CONFIG_FLAGS(drive)->test_write = 0; |
| 3148 | CDROM_CONFIG_FLAGS(drive)->dvd = 0; |
| 3149 | CDROM_CONFIG_FLAGS(drive)->dvd_r = 0; |
| 3150 | CDROM_CONFIG_FLAGS(drive)->dvd_ram = 0; |
| 3151 | CDROM_CONFIG_FLAGS(drive)->no_eject = 1; |
| 3152 | CDROM_CONFIG_FLAGS(drive)->supp_disc_present = 0; |
| 3153 | CDROM_CONFIG_FLAGS(drive)->audio_play = 0; |
| 3154 | CDROM_CONFIG_FLAGS(drive)->close_tray = 1; |
| 3155 | |
| 3156 | /* limit transfer size per interrupt. */ |
| 3157 | CDROM_CONFIG_FLAGS(drive)->limit_nframes = 0; |
| 3158 | /* a testament to the nice quality of Samsung drives... */ |
| 3159 | if (!strcmp(drive->id->model, "SAMSUNG CD-ROM SCR-2430")) |
| 3160 | CDROM_CONFIG_FLAGS(drive)->limit_nframes = 1; |
| 3161 | else if (!strcmp(drive->id->model, "SAMSUNG CD-ROM SCR-2432")) |
| 3162 | CDROM_CONFIG_FLAGS(drive)->limit_nframes = 1; |
| 3163 | /* the 3231 model does not support the SET_CD_SPEED command */ |
| 3164 | else if (!strcmp(drive->id->model, "SAMSUNG CD-ROM SCR-3231")) |
| 3165 | cdi->mask |= CDC_SELECT_SPEED; |
| 3166 | |
| 3167 | #if ! STANDARD_ATAPI |
| 3168 | /* by default Sanyo 3 CD changer support is turned off and |
| 3169 | ATAPI Rev 2.2+ standard support for CD changers is used */ |
| 3170 | cdi->sanyo_slot = 0; |
| 3171 | |
| 3172 | CDROM_CONFIG_FLAGS(drive)->nec260 = 0; |
| 3173 | CDROM_CONFIG_FLAGS(drive)->toctracks_as_bcd = 0; |
| 3174 | CDROM_CONFIG_FLAGS(drive)->tocaddr_as_bcd = 0; |
| 3175 | CDROM_CONFIG_FLAGS(drive)->playmsf_as_bcd = 0; |
| 3176 | CDROM_CONFIG_FLAGS(drive)->subchan_as_bcd = 0; |
| 3177 | |
| 3178 | if (strcmp (drive->id->model, "V003S0DS") == 0 && |
| 3179 | drive->id->fw_rev[4] == '1' && |
| 3180 | drive->id->fw_rev[6] <= '2') { |
| 3181 | /* Vertos 300. |
| 3182 | Some versions of this drive like to talk BCD. */ |
| 3183 | CDROM_CONFIG_FLAGS(drive)->toctracks_as_bcd = 1; |
| 3184 | CDROM_CONFIG_FLAGS(drive)->tocaddr_as_bcd = 1; |
| 3185 | CDROM_CONFIG_FLAGS(drive)->playmsf_as_bcd = 1; |
| 3186 | CDROM_CONFIG_FLAGS(drive)->subchan_as_bcd = 1; |
| 3187 | } |
| 3188 | |
| 3189 | else if (strcmp (drive->id->model, "V006E0DS") == 0 && |
| 3190 | drive->id->fw_rev[4] == '1' && |
| 3191 | drive->id->fw_rev[6] <= '2') { |
| 3192 | /* Vertos 600 ESD. */ |
| 3193 | CDROM_CONFIG_FLAGS(drive)->toctracks_as_bcd = 1; |
| 3194 | } |
| 3195 | else if (strcmp(drive->id->model, "NEC CD-ROM DRIVE:260") == 0 && |
| 3196 | strncmp(drive->id->fw_rev, "1.01", 4) == 0) { /* FIXME */ |
| 3197 | /* Old NEC260 (not R). |
| 3198 | This drive was released before the 1.2 version |
| 3199 | of the spec. */ |
| 3200 | CDROM_CONFIG_FLAGS(drive)->tocaddr_as_bcd = 1; |
| 3201 | CDROM_CONFIG_FLAGS(drive)->playmsf_as_bcd = 1; |
| 3202 | CDROM_CONFIG_FLAGS(drive)->subchan_as_bcd = 1; |
| 3203 | CDROM_CONFIG_FLAGS(drive)->nec260 = 1; |
| 3204 | } |
| 3205 | else if (strcmp(drive->id->model, "WEARNES CDD-120") == 0 && |
| 3206 | strncmp(drive->id->fw_rev, "A1.1", 4) == 0) { /* FIXME */ |
| 3207 | /* Wearnes */ |
| 3208 | CDROM_CONFIG_FLAGS(drive)->playmsf_as_bcd = 1; |
| 3209 | CDROM_CONFIG_FLAGS(drive)->subchan_as_bcd = 1; |
| 3210 | } |
| 3211 | /* Sanyo 3 CD changer uses a non-standard command |
| 3212 | for CD changing */ |
| 3213 | else if ((strcmp(drive->id->model, "CD-ROM CDR-C3 G") == 0) || |
| 3214 | (strcmp(drive->id->model, "CD-ROM CDR-C3G") == 0) || |
| 3215 | (strcmp(drive->id->model, "CD-ROM CDR_C36") == 0)) { |
| 3216 | /* uses CD in slot 0 when value is set to 3 */ |
| 3217 | cdi->sanyo_slot = 3; |
| 3218 | } |
| 3219 | #endif /* not STANDARD_ATAPI */ |
| 3220 | |
| 3221 | info->toc = NULL; |
| 3222 | info->buffer = NULL; |
| 3223 | info->sector_buffered = 0; |
| 3224 | info->nsectors_buffered = 0; |
| 3225 | info->changer_info = NULL; |
| 3226 | info->last_block = 0; |
| 3227 | info->start_seek = 0; |
| 3228 | |
| 3229 | nslots = ide_cdrom_probe_capabilities (drive); |
| 3230 | |
| 3231 | /* |
| 3232 | * set correct block size |
| 3233 | */ |
| 3234 | blk_queue_hardsect_size(drive->queue, CD_FRAMESIZE); |
| 3235 | |
| 3236 | if (drive->autotune == IDE_TUNE_DEFAULT || |
| 3237 | drive->autotune == IDE_TUNE_AUTO) |
| 3238 | drive->dsc_overlap = (drive->next != drive); |
| 3239 | #if 0 |
| 3240 | drive->dsc_overlap = (HWIF(drive)->no_dsc) ? 0 : 1; |
| 3241 | if (HWIF(drive)->no_dsc) { |
| 3242 | printk(KERN_INFO "ide-cd: %s: disabling DSC overlap\n", |
| 3243 | drive->name); |
| 3244 | drive->dsc_overlap = 0; |
| 3245 | } |
| 3246 | #endif |
| 3247 | |
| 3248 | if (ide_cdrom_register(drive, nslots)) { |
| 3249 | printk (KERN_ERR "%s: ide_cdrom_setup failed to register device with the cdrom driver.\n", drive->name); |
| 3250 | info->devinfo.handle = NULL; |
| 3251 | return 1; |
| 3252 | } |
| 3253 | ide_cdrom_add_settings(drive); |
| 3254 | return 0; |
| 3255 | } |
| 3256 | |
| 3257 | static |
| 3258 | sector_t ide_cdrom_capacity (ide_drive_t *drive) |
| 3259 | { |
| 3260 | unsigned long capacity, sectors_per_frame; |
| 3261 | |
| 3262 | if (cdrom_read_capacity(drive, &capacity, §ors_per_frame, NULL)) |
| 3263 | return 0; |
| 3264 | |
| 3265 | return capacity * sectors_per_frame; |
| 3266 | } |
| 3267 | |
Bartlomiej Zolnierkiewicz | 8604aff | 2005-05-26 14:55:34 +0200 | [diff] [blame] | 3268 | static int ide_cd_remove(struct device *dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3269 | { |
Bartlomiej Zolnierkiewicz | 8604aff | 2005-05-26 14:55:34 +0200 | [diff] [blame] | 3270 | ide_drive_t *drive = to_ide_device(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3271 | struct cdrom_info *info = drive->driver_data; |
| 3272 | |
Bartlomiej Zolnierkiewicz | 8604aff | 2005-05-26 14:55:34 +0200 | [diff] [blame] | 3273 | ide_unregister_subdriver(drive, info->driver); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3274 | |
| 3275 | del_gendisk(info->disk); |
| 3276 | |
| 3277 | ide_cd_put(info); |
| 3278 | |
| 3279 | return 0; |
| 3280 | } |
| 3281 | |
| 3282 | static void ide_cd_release(struct kref *kref) |
| 3283 | { |
| 3284 | struct cdrom_info *info = to_ide_cd(kref); |
| 3285 | struct cdrom_device_info *devinfo = &info->devinfo; |
| 3286 | ide_drive_t *drive = info->drive; |
| 3287 | struct gendisk *g = info->disk; |
| 3288 | |
| 3289 | if (info->buffer != NULL) |
| 3290 | kfree(info->buffer); |
| 3291 | if (info->toc != NULL) |
| 3292 | kfree(info->toc); |
| 3293 | if (info->changer_info != NULL) |
| 3294 | kfree(info->changer_info); |
| 3295 | if (devinfo->handle == drive && unregister_cdrom(devinfo)) |
| 3296 | printk(KERN_ERR "%s: %s failed to unregister device from the cdrom " |
| 3297 | "driver.\n", __FUNCTION__, drive->name); |
| 3298 | drive->dsc_overlap = 0; |
| 3299 | drive->driver_data = NULL; |
| 3300 | blk_queue_prep_rq(drive->queue, NULL); |
| 3301 | g->private_data = NULL; |
| 3302 | put_disk(g); |
| 3303 | kfree(info); |
| 3304 | } |
| 3305 | |
Bartlomiej Zolnierkiewicz | 8604aff | 2005-05-26 14:55:34 +0200 | [diff] [blame] | 3306 | static int ide_cd_probe(struct device *); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3307 | |
| 3308 | #ifdef CONFIG_PROC_FS |
| 3309 | static int proc_idecd_read_capacity |
| 3310 | (char *page, char **start, off_t off, int count, int *eof, void *data) |
| 3311 | { |
| 3312 | ide_drive_t*drive = (ide_drive_t *)data; |
| 3313 | int len; |
| 3314 | |
| 3315 | len = sprintf(page,"%llu\n", (long long)ide_cdrom_capacity(drive)); |
| 3316 | PROC_IDE_READ_RETURN(page,start,off,count,eof,len); |
| 3317 | } |
| 3318 | |
| 3319 | static ide_proc_entry_t idecd_proc[] = { |
| 3320 | { "capacity", S_IFREG|S_IRUGO, proc_idecd_read_capacity, NULL }, |
| 3321 | { NULL, 0, NULL, NULL } |
| 3322 | }; |
| 3323 | #else |
| 3324 | # define idecd_proc NULL |
| 3325 | #endif |
| 3326 | |
| 3327 | static ide_driver_t ide_cdrom_driver = { |
| 3328 | .owner = THIS_MODULE, |
Bartlomiej Zolnierkiewicz | 8604aff | 2005-05-26 14:55:34 +0200 | [diff] [blame] | 3329 | .gen_driver = { |
| 3330 | .name = "ide-cdrom", |
| 3331 | .bus = &ide_bus_type, |
| 3332 | .probe = ide_cd_probe, |
| 3333 | .remove = ide_cd_remove, |
| 3334 | }, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3335 | .version = IDECD_VERSION, |
| 3336 | .media = ide_cdrom, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3337 | .supports_dsc_overlap = 1, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3338 | .do_request = ide_do_rw_cdrom, |
| 3339 | .end_request = ide_end_request, |
| 3340 | .error = __ide_error, |
| 3341 | .abort = __ide_abort, |
| 3342 | .proc = idecd_proc, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3343 | }; |
| 3344 | |
| 3345 | static int idecd_open(struct inode * inode, struct file * file) |
| 3346 | { |
| 3347 | struct gendisk *disk = inode->i_bdev->bd_disk; |
| 3348 | struct cdrom_info *info; |
| 3349 | ide_drive_t *drive; |
| 3350 | int rc = -ENOMEM; |
| 3351 | |
| 3352 | if (!(info = ide_cd_get(disk))) |
| 3353 | return -ENXIO; |
| 3354 | |
| 3355 | drive = info->drive; |
| 3356 | |
| 3357 | drive->usage++; |
| 3358 | |
| 3359 | if (!info->buffer) |
| 3360 | info->buffer = kmalloc(SECTOR_BUFFER_SIZE, |
| 3361 | GFP_KERNEL|__GFP_REPEAT); |
| 3362 | if (!info->buffer || (rc = cdrom_open(&info->devinfo, inode, file))) |
| 3363 | drive->usage--; |
| 3364 | |
| 3365 | if (rc < 0) |
| 3366 | ide_cd_put(info); |
| 3367 | |
| 3368 | return rc; |
| 3369 | } |
| 3370 | |
| 3371 | static int idecd_release(struct inode * inode, struct file * file) |
| 3372 | { |
| 3373 | struct gendisk *disk = inode->i_bdev->bd_disk; |
| 3374 | struct cdrom_info *info = ide_cd_g(disk); |
| 3375 | ide_drive_t *drive = info->drive; |
| 3376 | |
| 3377 | cdrom_release (&info->devinfo, file); |
| 3378 | drive->usage--; |
| 3379 | |
| 3380 | ide_cd_put(info); |
| 3381 | |
| 3382 | return 0; |
| 3383 | } |
| 3384 | |
| 3385 | static int idecd_ioctl (struct inode *inode, struct file *file, |
| 3386 | unsigned int cmd, unsigned long arg) |
| 3387 | { |
| 3388 | struct block_device *bdev = inode->i_bdev; |
| 3389 | struct cdrom_info *info = ide_cd_g(bdev->bd_disk); |
| 3390 | int err; |
| 3391 | |
| 3392 | err = generic_ide_ioctl(info->drive, file, bdev, cmd, arg); |
| 3393 | if (err == -EINVAL) |
| 3394 | err = cdrom_ioctl(file, &info->devinfo, inode, cmd, arg); |
| 3395 | |
| 3396 | return err; |
| 3397 | } |
| 3398 | |
| 3399 | static int idecd_media_changed(struct gendisk *disk) |
| 3400 | { |
| 3401 | struct cdrom_info *info = ide_cd_g(disk); |
| 3402 | return cdrom_media_changed(&info->devinfo); |
| 3403 | } |
| 3404 | |
| 3405 | static int idecd_revalidate_disk(struct gendisk *disk) |
| 3406 | { |
| 3407 | struct cdrom_info *info = ide_cd_g(disk); |
| 3408 | struct request_sense sense; |
| 3409 | cdrom_read_toc(info->drive, &sense); |
| 3410 | return 0; |
| 3411 | } |
| 3412 | |
| 3413 | static struct block_device_operations idecd_ops = { |
| 3414 | .owner = THIS_MODULE, |
| 3415 | .open = idecd_open, |
| 3416 | .release = idecd_release, |
| 3417 | .ioctl = idecd_ioctl, |
| 3418 | .media_changed = idecd_media_changed, |
| 3419 | .revalidate_disk= idecd_revalidate_disk |
| 3420 | }; |
| 3421 | |
| 3422 | /* options */ |
| 3423 | static char *ignore = NULL; |
| 3424 | |
| 3425 | module_param(ignore, charp, 0400); |
| 3426 | MODULE_DESCRIPTION("ATAPI CD-ROM Driver"); |
| 3427 | |
Bartlomiej Zolnierkiewicz | 8604aff | 2005-05-26 14:55:34 +0200 | [diff] [blame] | 3428 | static int ide_cd_probe(struct device *dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3429 | { |
Bartlomiej Zolnierkiewicz | 8604aff | 2005-05-26 14:55:34 +0200 | [diff] [blame] | 3430 | ide_drive_t *drive = to_ide_device(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3431 | struct cdrom_info *info; |
| 3432 | struct gendisk *g; |
| 3433 | struct request_sense sense; |
| 3434 | |
| 3435 | if (!strstr("ide-cdrom", drive->driver_req)) |
| 3436 | goto failed; |
| 3437 | if (!drive->present) |
| 3438 | goto failed; |
| 3439 | if (drive->media != ide_cdrom && drive->media != ide_optical) |
| 3440 | goto failed; |
| 3441 | /* skip drives that we were told to ignore */ |
| 3442 | if (ignore != NULL) { |
| 3443 | if (strstr(ignore, drive->name)) { |
| 3444 | printk(KERN_INFO "ide-cd: ignoring drive %s\n", drive->name); |
| 3445 | goto failed; |
| 3446 | } |
| 3447 | } |
| 3448 | if (drive->scsi) { |
| 3449 | printk(KERN_INFO "ide-cd: passing drive %s to ide-scsi emulation.\n", drive->name); |
| 3450 | goto failed; |
| 3451 | } |
| 3452 | info = (struct cdrom_info *) kmalloc (sizeof (struct cdrom_info), GFP_KERNEL); |
| 3453 | if (info == NULL) { |
| 3454 | printk(KERN_ERR "%s: Can't allocate a cdrom structure\n", drive->name); |
| 3455 | goto failed; |
| 3456 | } |
| 3457 | |
| 3458 | g = alloc_disk(1 << PARTN_BITS); |
| 3459 | if (!g) |
| 3460 | goto out_free_cd; |
| 3461 | |
| 3462 | ide_init_disk(g, drive); |
| 3463 | |
Bartlomiej Zolnierkiewicz | 8604aff | 2005-05-26 14:55:34 +0200 | [diff] [blame] | 3464 | ide_register_subdriver(drive, &ide_cdrom_driver); |
| 3465 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3466 | memset(info, 0, sizeof (struct cdrom_info)); |
| 3467 | |
| 3468 | kref_init(&info->kref); |
| 3469 | |
| 3470 | info->drive = drive; |
| 3471 | info->driver = &ide_cdrom_driver; |
| 3472 | info->disk = g; |
| 3473 | |
| 3474 | g->private_data = &info->driver; |
| 3475 | |
| 3476 | drive->driver_data = info; |
| 3477 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3478 | g->minors = 1; |
| 3479 | snprintf(g->devfs_name, sizeof(g->devfs_name), |
| 3480 | "%s/cd", drive->devfs_name); |
| 3481 | g->driverfs_dev = &drive->gendev; |
| 3482 | g->flags = GENHD_FL_CD | GENHD_FL_REMOVABLE; |
| 3483 | if (ide_cdrom_setup(drive)) { |
| 3484 | struct cdrom_device_info *devinfo = &info->devinfo; |
Bartlomiej Zolnierkiewicz | 8604aff | 2005-05-26 14:55:34 +0200 | [diff] [blame] | 3485 | ide_unregister_subdriver(drive, &ide_cdrom_driver); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3486 | if (info->buffer != NULL) |
| 3487 | kfree(info->buffer); |
| 3488 | if (info->toc != NULL) |
| 3489 | kfree(info->toc); |
| 3490 | if (info->changer_info != NULL) |
| 3491 | kfree(info->changer_info); |
| 3492 | if (devinfo->handle == drive && unregister_cdrom(devinfo)) |
| 3493 | printk (KERN_ERR "%s: ide_cdrom_cleanup failed to unregister device from the cdrom driver.\n", drive->name); |
| 3494 | kfree(info); |
| 3495 | drive->driver_data = NULL; |
| 3496 | goto failed; |
| 3497 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3498 | |
| 3499 | cdrom_read_toc(drive, &sense); |
| 3500 | g->fops = &idecd_ops; |
| 3501 | g->flags |= GENHD_FL_REMOVABLE; |
| 3502 | add_disk(g); |
| 3503 | return 0; |
| 3504 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3505 | out_free_cd: |
| 3506 | kfree(info); |
| 3507 | failed: |
Bartlomiej Zolnierkiewicz | 8604aff | 2005-05-26 14:55:34 +0200 | [diff] [blame] | 3508 | return -ENODEV; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3509 | } |
| 3510 | |
| 3511 | static void __exit ide_cdrom_exit(void) |
| 3512 | { |
Bartlomiej Zolnierkiewicz | 8604aff | 2005-05-26 14:55:34 +0200 | [diff] [blame] | 3513 | driver_unregister(&ide_cdrom_driver.gen_driver); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3514 | } |
| 3515 | |
| 3516 | static int ide_cdrom_init(void) |
| 3517 | { |
Bartlomiej Zolnierkiewicz | 8604aff | 2005-05-26 14:55:34 +0200 | [diff] [blame] | 3518 | return driver_register(&ide_cdrom_driver.gen_driver); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3519 | } |
| 3520 | |
| 3521 | module_init(ide_cdrom_init); |
| 3522 | module_exit(ide_cdrom_exit); |
| 3523 | MODULE_LICENSE("GPL"); |