2 * linux/drivers/ide/ide-cd.c
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>
8 * May be copied or modified under the terms of the GNU General Public
9 * License. See linux/COPYING for more information.
11 * ATAPI CD-ROM driver. To be used with ide.c.
12 * See Documentation/cdrom/ide-cd for usage information.
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
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
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...
26 * ----------------------------------
28 * -Make it so that Pioneer CD DR-A24X and friends don't get screwed up on
31 * ----------------------------------
32 * 1.00 Oct 31, 1994 -- Initial version.
33 * 1.01 Nov 2, 1994 -- Fixed problem with starting request in
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;
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
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
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
61 * Include an option to give textual descriptions
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().
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,
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
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.
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
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.
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)
162 * 4.02 Dec 01, 1996 -- Applied patch from Gadi Oxman <gadio@netvision.net.il>
163 * to fix the drive door locking problems.
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)
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
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.
209 * 4.15 Aug 25, 1998 -- Updated ide-cd.h to respect mechine endianess,
210 * patch thanks to "Eddie C. Dost" <ecd@skynet.be>
212 * 4.50 Oct 19, 1998 -- New maintainers!
213 * Jens Axboe <axboe@image.dk>
214 * Chris Zwilling <chris@cloudnet.com>
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.
223 * 4.52 Jan 19, 1999 -- Jens Axboe <axboe@image.dk>
224 * - Detect DVD-ROM/RAM drives
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
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.
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
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.
267 * 4.56 Sep 12, 1999 - Removed changer support - it is now in the
269 * - Added partition based multisession handling.
270 * - Mode sense and mode select moved to the
272 * - Fixed a problem with WPI CDS-32X drive - it
273 * failed the capabilities
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.
285 * 4.58 May 1, 2000 - Clean up ACER50 stuff.
286 * - Fix small problem with ide_cdrom_capacity
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
297 * 4.61 Jan 22, 2004 - support hardware sector sizes other than 2kB,
298 * Pascal Schmidt <der.eremit@email.de>
300 *************************************************************************/
302 #define IDECD_VERSION "4.61"
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>
317 #include <scsi/scsi.h> /* For SCSI -> ATAPI command conversion */
321 #include <asm/byteorder.h>
322 #include <asm/uaccess.h>
323 #include <asm/unaligned.h>
327 /****************************************************************************
328 * Generic packet command support and error handling routines.
331 /* Mark that we've seen a media change, and invalidate our internal
333 static void cdrom_saw_media_change (ide_drive_t *drive)
335 struct cdrom_info *info = drive->driver_data;
337 CDROM_STATE_FLAGS (drive)->media_changed = 1;
338 CDROM_STATE_FLAGS (drive)->toc_valid = 0;
339 info->nsectors_buffered = 0;
342 static int cdrom_log_sense(ide_drive_t *drive, struct request *rq,
343 struct request_sense *sense)
347 if (!sense || !rq || (rq->flags & REQ_QUIET))
350 switch (sense->sense_key) {
351 case NO_SENSE: case RECOVERED_ERROR:
355 * don't care about tray state messages for
356 * e.g. capacity commands or in-progress or
359 if (sense->asc == 0x3a || sense->asc == 0x04)
363 case ILLEGAL_REQUEST:
365 * don't log START_STOP unit with LoEj set, since
366 * we cannot reliably check if drive can auto-close
368 if (rq->cmd[0] == GPCMD_START_STOP_UNIT && sense->asc == 0x24)
373 * Make good and sure we've seen this potential media
374 * change. Some drives (i.e. Creative) fail to present
375 * the correct sense key in the error register.
377 cdrom_saw_media_change(drive);
387 void cdrom_analyze_sense_data(ide_drive_t *drive,
388 struct request *failed_command,
389 struct request_sense *sense)
391 if (!cdrom_log_sense(drive, failed_command, sense))
395 * If a read toc is executed for a CD-R or CD-RW medium where
396 * the first toc has not been recorded yet, it will fail with
397 * 05/24/00 (which is a confusing error)
399 if (failed_command && failed_command->cmd[0] == GPCMD_READ_TOC_PMA_ATIP)
400 if (sense->sense_key == 0x05 && sense->asc == 0x24)
403 #if VERBOSE_IDE_CD_ERRORS
409 printk ("ATAPI device %s:\n", drive->name);
410 if (sense->error_code==0x70)
412 else if (sense->error_code==0x71)
413 printk(" Deferred Error: ");
414 else if (sense->error_code == 0x7f)
415 printk(" Vendor-specific Error: ");
417 printk(" Unknown Error Type: ");
419 if (sense->sense_key < ARY_LEN(sense_key_texts))
420 s = sense_key_texts[sense->sense_key];
422 s = "bad sense key!";
424 printk("%s -- (Sense key=0x%02x)\n", s, sense->sense_key);
426 if (sense->asc == 0x40) {
427 sprintf(buf, "Diagnostic failure on component 0x%02x",
431 int lo = 0, mid, hi = ARY_LEN(sense_data_texts);
432 unsigned long key = (sense->sense_key << 16);
433 key |= (sense->asc << 8);
434 if (!(sense->ascq >= 0x80 && sense->ascq <= 0xdd))
440 if (sense_data_texts[mid].asc_ascq == key ||
441 sense_data_texts[mid].asc_ascq == (0xff0000|key)) {
442 s = sense_data_texts[mid].text;
445 else if (sense_data_texts[mid].asc_ascq > key)
453 if (sense->asc > 0x80)
454 s = "(vendor-specific error)";
456 s = "(reserved error code)";
459 printk(KERN_ERR " %s -- (asc=0x%02x, ascq=0x%02x)\n",
460 s, sense->asc, sense->ascq);
462 if (failed_command != NULL) {
464 int lo=0, mid, hi= ARY_LEN (packet_command_texts);
469 if (packet_command_texts[mid].packet_command ==
470 failed_command->cmd[0]) {
471 s = packet_command_texts[mid].text;
474 if (packet_command_texts[mid].packet_command >
475 failed_command->cmd[0])
481 printk (KERN_ERR " The failed \"%s\" packet command was: \n \"", s);
482 for (i=0; i<sizeof (failed_command->cmd); i++)
483 printk ("%02x ", failed_command->cmd[i]);
487 /* The SKSV bit specifies validity of the sense_key_specific
488 * in the next two commands. It is bit 7 of the first byte.
489 * In the case of NOT_READY, if SKSV is set the drive can
490 * give us nice ETA readings.
492 if (sense->sense_key == NOT_READY && (sense->sks[0] & 0x80)) {
493 int progress = (sense->sks[1] << 8 | sense->sks[2]) * 100;
494 printk(KERN_ERR " Command is %02d%% complete\n", progress / 0xffff);
498 if (sense->sense_key == ILLEGAL_REQUEST &&
499 (sense->sks[0] & 0x80) != 0) {
500 printk(KERN_ERR " Error in %s byte %d",
501 (sense->sks[0] & 0x40) != 0 ?
502 "command packet" : "command data",
503 (sense->sks[1] << 8) + sense->sks[2]);
505 if ((sense->sks[0] & 0x40) != 0)
506 printk (" bit %d", sense->sks[0] & 0x07);
512 #else /* not VERBOSE_IDE_CD_ERRORS */
514 /* Suppress printing unit attention and `in progress of becoming ready'
515 errors when we're not being verbose. */
517 if (sense->sense_key == UNIT_ATTENTION ||
518 (sense->sense_key == NOT_READY && (sense->asc == 4 ||
519 sense->asc == 0x3a)))
522 printk(KERN_ERR "%s: error code: 0x%02x sense_key: 0x%02x asc: 0x%02x ascq: 0x%02x\n",
524 sense->error_code, sense->sense_key,
525 sense->asc, sense->ascq);
526 #endif /* not VERBOSE_IDE_CD_ERRORS */
530 * Initialize a ide-cd packet command request
532 static void cdrom_prepare_request(struct request *rq)
534 ide_init_drive_cmd(rq);
538 static void cdrom_queue_request_sense(ide_drive_t *drive, void *sense,
539 struct request *failed_command)
541 struct cdrom_info *info = drive->driver_data;
542 struct request *rq = &info->request_sense_request;
545 sense = &info->sense_data;
547 /* stuff the sense request in front of our current request */
548 cdrom_prepare_request(rq);
551 rq->cmd[0] = GPCMD_REQUEST_SENSE;
552 rq->cmd[4] = rq->data_len = 18;
554 rq->flags = REQ_SENSE;
556 /* NOTE! Save the failed command in "rq->buffer" */
557 rq->buffer = (void *) failed_command;
559 (void) ide_do_drive_cmd(drive, rq, ide_preempt);
562 static void cdrom_end_request (ide_drive_t *drive, int uptodate)
564 struct request *rq = HWGROUP(drive)->rq;
565 int nsectors = rq->hard_cur_sectors;
567 if ((rq->flags & REQ_SENSE) && uptodate) {
569 * For REQ_SENSE, "rq->buffer" points to the original failed
572 struct request *failed = (struct request *) rq->buffer;
573 struct cdrom_info *info = drive->driver_data;
574 void *sense = &info->sense_data;
579 sense = failed->sense;
580 failed->sense_len = rq->sense_len;
584 * now end failed request
586 spin_lock_irqsave(&ide_lock, flags);
587 end_that_request_chunk(failed, 0, failed->data_len);
588 end_that_request_last(failed);
589 spin_unlock_irqrestore(&ide_lock, flags);
592 cdrom_analyze_sense_data(drive, failed, sense);
595 if (!rq->current_nr_sectors && blk_fs_request(rq))
597 /* make sure it's fully ended */
598 if (blk_pc_request(rq))
599 nsectors = (rq->data_len + 511) >> 9;
603 ide_end_request(drive, uptodate, nsectors);
606 /* Returns 0 if the request should be continued.
607 Returns 1 if the request was ended. */
608 static int cdrom_decode_status(ide_drive_t *drive, int good_stat, int *stat_ret)
610 struct request *rq = HWGROUP(drive)->rq;
611 int stat, err, sense_key;
613 /* Check for errors. */
614 stat = HWIF(drive)->INB(IDE_STATUS_REG);
618 if (OK_STAT(stat, good_stat, BAD_R_STAT))
621 /* Get the IDE error register. */
622 err = HWIF(drive)->INB(IDE_ERROR_REG);
623 sense_key = err >> 4;
626 printk("%s: missing rq in cdrom_decode_status\n", drive->name);
630 if (rq->flags & REQ_SENSE) {
631 /* We got an error trying to get sense info
632 from the drive (probably while trying
633 to recover from a former error). Just give up. */
635 rq->flags |= REQ_FAILED;
636 cdrom_end_request(drive, 0);
637 ide_error(drive, "request sense failure", stat);
640 } else if (rq->flags & (REQ_PC | REQ_BLOCK_PC)) {
641 /* All other functions, except for READ. */
645 * if we have an error, pass back CHECK_CONDITION as the
648 if ((rq->flags & REQ_BLOCK_PC) && !rq->errors)
649 rq->errors = SAM_STAT_CHECK_CONDITION;
651 /* Check for tray open. */
652 if (sense_key == NOT_READY) {
653 cdrom_saw_media_change (drive);
654 } else if (sense_key == UNIT_ATTENTION) {
655 /* Check for media change. */
656 cdrom_saw_media_change (drive);
657 /*printk("%s: media changed\n",drive->name);*/
659 } else if (!(rq->flags & REQ_QUIET)) {
660 /* Otherwise, print an error. */
661 ide_dump_status(drive, "packet command error", stat);
664 rq->flags |= REQ_FAILED;
667 * instead of playing games with moving completions around,
668 * remove failed request completely and end it when the
669 * request sense has completed
671 if (stat & ERR_STAT) {
672 spin_lock_irqsave(&ide_lock, flags);
673 blkdev_dequeue_request(rq);
674 HWGROUP(drive)->rq = NULL;
675 spin_unlock_irqrestore(&ide_lock, flags);
677 cdrom_queue_request_sense(drive, rq->sense, rq);
679 cdrom_end_request(drive, 0);
681 } else if (blk_fs_request(rq)) {
682 int do_end_request = 0;
684 /* Handle errors from READ and WRITE requests. */
686 if (blk_noretry_request(rq))
689 if (sense_key == NOT_READY) {
691 if (rq_data_dir(rq) == READ) {
692 cdrom_saw_media_change (drive);
694 /* Fail the request. */
695 printk ("%s: tray open\n", drive->name);
698 struct cdrom_info *info = drive->driver_data;
700 /* allow the drive 5 seconds to recover, some
701 * devices will return this error while flushing
704 info->write_timeout = jiffies + ATAPI_WAIT_WRITE_BUSY;
706 if (time_after(jiffies, info->write_timeout))
712 * take a breather relying on the
713 * unplug timer to kick us again
715 spin_lock_irqsave(&ide_lock, flags);
716 blk_plug_device(drive->queue);
717 spin_unlock_irqrestore(&ide_lock,flags);
721 } else if (sense_key == UNIT_ATTENTION) {
723 cdrom_saw_media_change (drive);
725 /* Arrange to retry the request.
726 But be sure to give up if we've retried
728 if (++rq->errors > ERROR_MAX)
730 } else if (sense_key == ILLEGAL_REQUEST ||
731 sense_key == DATA_PROTECT) {
732 /* No point in retrying after an illegal
733 request or data protect error.*/
734 ide_dump_status (drive, "command error", stat);
736 } else if (sense_key == MEDIUM_ERROR) {
737 /* No point in re-trying a zillion times on a bad
738 * sector... If we got here the error is not correctable */
739 ide_dump_status (drive, "media error (bad sector)", stat);
741 } else if (sense_key == BLANK_CHECK) {
742 /* Disk appears blank ?? */
743 ide_dump_status (drive, "media error (blank)", stat);
745 } else if ((err & ~ABRT_ERR) != 0) {
746 /* Go to the default handler
748 ide_error(drive, "cdrom_decode_status", stat);
750 } else if ((++rq->errors > ERROR_MAX)) {
751 /* We've racked up too many retries. Abort. */
756 cdrom_end_request(drive, 0);
758 /* If we got a CHECK_CONDITION status,
759 queue a request sense command. */
760 if ((stat & ERR_STAT) != 0)
761 cdrom_queue_request_sense(drive, NULL, NULL);
763 blk_dump_rq_flags(rq, "ide-cd: bad rq");
764 cdrom_end_request(drive, 0);
767 /* Retry, or handle the next request. */
771 static int cdrom_timer_expiry(ide_drive_t *drive)
773 struct request *rq = HWGROUP(drive)->rq;
774 unsigned long wait = 0;
777 * Some commands are *slow* and normally take a long time to
778 * complete. Usually we can use the ATAPI "disconnect" to bypass
779 * this, but not all commands/drives support that. Let
780 * ide_timer_expiry keep polling us for these.
782 switch (rq->cmd[0]) {
784 case GPCMD_FORMAT_UNIT:
785 case GPCMD_RESERVE_RZONE_TRACK:
786 case GPCMD_CLOSE_TRACK:
787 case GPCMD_FLUSH_CACHE:
788 wait = ATAPI_WAIT_PC;
791 if (!(rq->flags & REQ_QUIET))
792 printk(KERN_INFO "ide-cd: cmd 0x%x timed out\n", rq->cmd[0]);
799 /* Set up the device registers for transferring a packet command on DEV,
800 expecting to later transfer XFERLEN bytes. HANDLER is the routine
801 which actually transfers the command to the drive. If this is a
802 drq_interrupt device, this routine will arrange for HANDLER to be
803 called when the interrupt from the drive arrives. Otherwise, HANDLER
804 will be called immediately after the drive is prepared for the transfer. */
806 static ide_startstop_t cdrom_start_packet_command(ide_drive_t *drive,
808 ide_handler_t *handler)
810 ide_startstop_t startstop;
811 struct cdrom_info *info = drive->driver_data;
812 ide_hwif_t *hwif = drive->hwif;
814 /* Wait for the controller to be idle. */
815 if (ide_wait_stat(&startstop, drive, 0, BUSY_STAT, WAIT_READY))
819 info->dma = !hwif->dma_setup(drive);
821 /* Set up the controller registers. */
822 /* FIXME: for Virtual DMA we must check harder */
823 HWIF(drive)->OUTB(info->dma, IDE_FEATURE_REG);
824 HWIF(drive)->OUTB(0, IDE_IREASON_REG);
825 HWIF(drive)->OUTB(0, IDE_SECTOR_REG);
827 HWIF(drive)->OUTB(xferlen & 0xff, IDE_BCOUNTL_REG);
828 HWIF(drive)->OUTB(xferlen >> 8 , IDE_BCOUNTH_REG);
830 HWIF(drive)->OUTB(drive->ctl, IDE_CONTROL_REG);
832 if (CDROM_CONFIG_FLAGS (drive)->drq_interrupt) {
834 ide_execute_command(drive, WIN_PACKETCMD, handler, ATAPI_WAIT_PC, cdrom_timer_expiry);
840 spin_lock_irqsave(&ide_lock, flags);
841 hwif->OUTBSYNC(drive, WIN_PACKETCMD, IDE_COMMAND_REG);
843 spin_unlock_irqrestore(&ide_lock, flags);
845 return (*handler) (drive);
849 /* Send a packet command to DRIVE described by CMD_BUF and CMD_LEN.
850 The device registers must have already been prepared
851 by cdrom_start_packet_command.
852 HANDLER is the interrupt handler to call when the command completes
853 or there's data ready. */
855 * changed 5 parameters to 3 for dvd-ram
856 * struct packet_command *pc; now packet_command_t *pc;
858 #define ATAPI_MIN_CDB_BYTES 12
859 static ide_startstop_t cdrom_transfer_packet_command (ide_drive_t *drive,
861 ide_handler_t *handler)
863 ide_hwif_t *hwif = drive->hwif;
865 struct cdrom_info *info = drive->driver_data;
866 ide_startstop_t startstop;
868 if (CDROM_CONFIG_FLAGS(drive)->drq_interrupt) {
869 /* Here we should have been called after receiving an interrupt
870 from the device. DRQ should how be set. */
872 /* Check for errors. */
873 if (cdrom_decode_status(drive, DRQ_STAT, NULL))
876 /* Otherwise, we must wait for DRQ to get set. */
877 if (ide_wait_stat(&startstop, drive, DRQ_STAT,
878 BUSY_STAT, WAIT_READY))
882 /* Arm the interrupt handler. */
883 ide_set_handler(drive, handler, rq->timeout, cdrom_timer_expiry);
885 /* ATAPI commands get padded out to 12 bytes minimum */
886 cmd_len = COMMAND_SIZE(rq->cmd[0]);
887 if (cmd_len < ATAPI_MIN_CDB_BYTES)
888 cmd_len = ATAPI_MIN_CDB_BYTES;
890 /* Send the command to the device. */
891 HWIF(drive)->atapi_output_bytes(drive, rq->cmd, cmd_len);
893 /* Start the DMA if need be */
895 hwif->dma_start(drive);
900 /****************************************************************************
901 * Block read functions.
905 * Buffer up to SECTORS_TO_TRANSFER sectors from the drive in our sector
906 * buffer. Once the first sector is added, any subsequent sectors are
907 * assumed to be continuous (until the buffer is cleared). For the first
908 * sector added, SECTOR is its sector number. (SECTOR is then ignored until
909 * the buffer is cleared.)
911 static void cdrom_buffer_sectors (ide_drive_t *drive, unsigned long sector,
912 int sectors_to_transfer)
914 struct cdrom_info *info = drive->driver_data;
916 /* Number of sectors to read into the buffer. */
917 int sectors_to_buffer = min_t(int, sectors_to_transfer,
918 (SECTOR_BUFFER_SIZE >> SECTOR_BITS) -
919 info->nsectors_buffered);
923 /* If we couldn't get a buffer, don't try to buffer anything... */
924 if (info->buffer == NULL)
925 sectors_to_buffer = 0;
927 /* If this is the first sector in the buffer, remember its number. */
928 if (info->nsectors_buffered == 0)
929 info->sector_buffered = sector;
931 /* Read the data into the buffer. */
932 dest = info->buffer + info->nsectors_buffered * SECTOR_SIZE;
933 while (sectors_to_buffer > 0) {
934 HWIF(drive)->atapi_input_bytes(drive, dest, SECTOR_SIZE);
936 --sectors_to_transfer;
937 ++info->nsectors_buffered;
941 /* Throw away any remaining data. */
942 while (sectors_to_transfer > 0) {
943 static char dum[SECTOR_SIZE];
944 HWIF(drive)->atapi_input_bytes(drive, dum, sizeof (dum));
945 --sectors_to_transfer;
950 * Check the contents of the interrupt reason register from the cdrom
951 * and attempt to recover if there are problems. Returns 0 if everything's
952 * ok; nonzero if the request has been terminated.
955 int cdrom_read_check_ireason (ide_drive_t *drive, int len, int ireason)
959 else if (ireason == 0) {
960 /* Whoops... The drive is expecting to receive data from us! */
961 printk(KERN_ERR "%s: read_intr: Drive wants to transfer data the "
962 "wrong way!\n", drive->name);
964 /* Throw some data at the drive so it doesn't hang
965 and quit this request. */
968 HWIF(drive)->atapi_output_bytes(drive, &dum, sizeof (dum));
971 } else if (ireason == 1) {
972 /* Some drives (ASUS) seem to tell us that status
973 * info is available. just get it and ignore.
975 (void) HWIF(drive)->INB(IDE_STATUS_REG);
978 /* Drive wants a command packet, or invalid ireason... */
979 printk(KERN_ERR "%s: read_intr: bad interrupt reason %x\n", drive->name,
983 cdrom_end_request(drive, 0);
988 * Interrupt routine. Called when a read request has completed.
990 static ide_startstop_t cdrom_read_intr (ide_drive_t *drive)
993 int ireason, len, sectors_to_transfer, nskip;
994 struct cdrom_info *info = drive->driver_data;
995 u8 lowcyl = 0, highcyl = 0;
996 int dma = info->dma, dma_error = 0;
998 struct request *rq = HWGROUP(drive)->rq;
1005 if ((dma_error = HWIF(drive)->ide_dma_end(drive)))
1006 __ide_dma_off(drive);
1009 if (cdrom_decode_status(drive, 0, &stat))
1014 ide_end_request(drive, 1, rq->nr_sectors);
1017 return ide_error(drive, "dma error", stat);
1020 /* Read the interrupt reason and the transfer length. */
1021 ireason = HWIF(drive)->INB(IDE_IREASON_REG) & 0x3;
1022 lowcyl = HWIF(drive)->INB(IDE_BCOUNTL_REG);
1023 highcyl = HWIF(drive)->INB(IDE_BCOUNTH_REG);
1025 len = lowcyl + (256 * highcyl);
1027 /* If DRQ is clear, the command has completed. */
1028 if ((stat & DRQ_STAT) == 0) {
1029 /* If we're not done filling the current buffer, complain.
1030 Otherwise, complete the command normally. */
1031 if (rq->current_nr_sectors > 0) {
1032 printk (KERN_ERR "%s: cdrom_read_intr: data underrun (%d blocks)\n",
1033 drive->name, rq->current_nr_sectors);
1034 rq->flags |= REQ_FAILED;
1035 cdrom_end_request(drive, 0);
1037 cdrom_end_request(drive, 1);
1041 /* Check that the drive is expecting to do the same thing we are. */
1042 if (cdrom_read_check_ireason (drive, len, ireason))
1045 /* Assume that the drive will always provide data in multiples
1046 of at least SECTOR_SIZE, as it gets hairy to keep track
1047 of the transfers otherwise. */
1048 if ((len % SECTOR_SIZE) != 0) {
1049 printk (KERN_ERR "%s: cdrom_read_intr: Bad transfer size %d\n",
1051 if (CDROM_CONFIG_FLAGS(drive)->limit_nframes)
1052 printk (KERN_ERR " This drive is not supported by this version of the driver\n");
1054 printk (KERN_ERR " Trying to limit transfer sizes\n");
1055 CDROM_CONFIG_FLAGS(drive)->limit_nframes = 1;
1057 cdrom_end_request(drive, 0);
1061 /* The number of sectors we need to read from the drive. */
1062 sectors_to_transfer = len / SECTOR_SIZE;
1064 /* First, figure out if we need to bit-bucket
1065 any of the leading sectors. */
1066 nskip = min_t(int, rq->current_nr_sectors - bio_cur_sectors(rq->bio), sectors_to_transfer);
1069 /* We need to throw away a sector. */
1070 static char dum[SECTOR_SIZE];
1071 HWIF(drive)->atapi_input_bytes(drive, dum, sizeof (dum));
1073 --rq->current_nr_sectors;
1075 --sectors_to_transfer;
1078 /* Now loop while we still have data to read from the drive. */
1079 while (sectors_to_transfer > 0) {
1082 /* If we've filled the present buffer but there's another
1083 chained buffer after it, move on. */
1084 if (rq->current_nr_sectors == 0 && rq->nr_sectors)
1085 cdrom_end_request(drive, 1);
1087 /* If the buffers are full, cache the rest of the data in our
1089 if (rq->current_nr_sectors == 0) {
1090 cdrom_buffer_sectors(drive, rq->sector, sectors_to_transfer);
1091 sectors_to_transfer = 0;
1093 /* Transfer data to the buffers.
1094 Figure out how many sectors we can transfer
1095 to the current buffer. */
1096 this_transfer = min_t(int, sectors_to_transfer,
1097 rq->current_nr_sectors);
1099 /* Read this_transfer sectors
1100 into the current buffer. */
1101 while (this_transfer > 0) {
1102 HWIF(drive)->atapi_input_bytes(drive, rq->buffer, SECTOR_SIZE);
1103 rq->buffer += SECTOR_SIZE;
1105 --rq->current_nr_sectors;
1108 --sectors_to_transfer;
1113 /* Done moving data! Wait for another interrupt. */
1114 ide_set_handler(drive, &cdrom_read_intr, ATAPI_WAIT_PC, NULL);
1119 * Try to satisfy some of the current read request from our cached data.
1120 * Returns nonzero if the request has been completed, zero otherwise.
1122 static int cdrom_read_from_buffer (ide_drive_t *drive)
1124 struct cdrom_info *info = drive->driver_data;
1125 struct request *rq = HWGROUP(drive)->rq;
1126 unsigned short sectors_per_frame;
1128 sectors_per_frame = queue_hardsect_size(drive->queue) >> SECTOR_BITS;
1130 /* Can't do anything if there's no buffer. */
1131 if (info->buffer == NULL) return 0;
1133 /* Loop while this request needs data and the next block is present
1135 while (rq->nr_sectors > 0 &&
1136 rq->sector >= info->sector_buffered &&
1137 rq->sector < info->sector_buffered + info->nsectors_buffered) {
1138 if (rq->current_nr_sectors == 0)
1139 cdrom_end_request(drive, 1);
1143 (rq->sector - info->sector_buffered) * SECTOR_SIZE,
1145 rq->buffer += SECTOR_SIZE;
1146 --rq->current_nr_sectors;
1151 /* If we've satisfied the current request,
1152 terminate it successfully. */
1153 if (rq->nr_sectors == 0) {
1154 cdrom_end_request(drive, 1);
1158 /* Move on to the next buffer if needed. */
1159 if (rq->current_nr_sectors == 0)
1160 cdrom_end_request(drive, 1);
1162 /* If this condition does not hold, then the kluge i use to
1163 represent the number of sectors to skip at the start of a transfer
1164 will fail. I think that this will never happen, but let's be
1165 paranoid and check. */
1166 if (rq->current_nr_sectors < bio_cur_sectors(rq->bio) &&
1167 (rq->sector & (sectors_per_frame - 1))) {
1168 printk(KERN_ERR "%s: cdrom_read_from_buffer: buffer botch (%ld)\n",
1169 drive->name, (long)rq->sector);
1170 cdrom_end_request(drive, 0);
1178 * Routine to send a read packet command to the drive.
1179 * This is usually called directly from cdrom_start_read.
1180 * However, for drq_interrupt devices, it is called from an interrupt
1181 * when the drive is ready to accept the command.
1183 static ide_startstop_t cdrom_start_read_continuation (ide_drive_t *drive)
1185 struct request *rq = HWGROUP(drive)->rq;
1186 unsigned short sectors_per_frame;
1189 sectors_per_frame = queue_hardsect_size(drive->queue) >> SECTOR_BITS;
1191 /* If the requested sector doesn't start on a cdrom block boundary,
1192 we must adjust the start of the transfer so that it does,
1193 and remember to skip the first few sectors.
1194 If the CURRENT_NR_SECTORS field is larger than the size
1195 of the buffer, it will mean that we're to skip a number
1196 of sectors equal to the amount by which CURRENT_NR_SECTORS
1197 is larger than the buffer size. */
1198 nskip = rq->sector & (sectors_per_frame - 1);
1200 /* Sanity check... */
1201 if (rq->current_nr_sectors != bio_cur_sectors(rq->bio) &&
1202 (rq->sector & (sectors_per_frame - 1))) {
1203 printk(KERN_ERR "%s: cdrom_start_read_continuation: buffer botch (%u)\n",
1204 drive->name, rq->current_nr_sectors);
1205 cdrom_end_request(drive, 0);
1208 rq->current_nr_sectors += nskip;
1211 /* Set up the command */
1212 rq->timeout = ATAPI_WAIT_PC;
1214 /* Send the command to the drive and return. */
1215 return cdrom_transfer_packet_command(drive, rq, &cdrom_read_intr);
1219 #define IDECD_SEEK_THRESHOLD (1000) /* 1000 blocks */
1220 #define IDECD_SEEK_TIMER (5 * WAIT_MIN_SLEEP) /* 100 ms */
1221 #define IDECD_SEEK_TIMEOUT (2 * WAIT_CMD) /* 20 sec */
1223 static ide_startstop_t cdrom_seek_intr (ide_drive_t *drive)
1225 struct cdrom_info *info = drive->driver_data;
1227 static int retry = 10;
1229 if (cdrom_decode_status(drive, 0, &stat))
1231 CDROM_CONFIG_FLAGS(drive)->seeking = 1;
1233 if (retry && time_after(jiffies, info->start_seek + IDECD_SEEK_TIMER)) {
1236 * this condition is far too common, to bother
1239 /* printk("%s: disabled DSC seek overlap\n", drive->name);*/
1240 drive->dsc_overlap = 0;
1246 static ide_startstop_t cdrom_start_seek_continuation (ide_drive_t *drive)
1248 struct request *rq = HWGROUP(drive)->rq;
1249 sector_t frame = rq->sector;
1251 sector_div(frame, queue_hardsect_size(drive->queue) >> SECTOR_BITS);
1253 memset(rq->cmd, 0, sizeof(rq->cmd));
1254 rq->cmd[0] = GPCMD_SEEK;
1255 put_unaligned(cpu_to_be32(frame), (unsigned int *) &rq->cmd[2]);
1257 rq->timeout = ATAPI_WAIT_PC;
1258 return cdrom_transfer_packet_command(drive, rq, &cdrom_seek_intr);
1261 static ide_startstop_t cdrom_start_seek (ide_drive_t *drive, unsigned int block)
1263 struct cdrom_info *info = drive->driver_data;
1267 info->start_seek = jiffies;
1268 return cdrom_start_packet_command(drive, 0, cdrom_start_seek_continuation);
1271 /* Fix up a possibly partially-processed request so that we can
1272 start it over entirely, or even put it back on the request queue. */
1273 static void restore_request (struct request *rq)
1275 if (rq->buffer != bio_data(rq->bio)) {
1276 sector_t n = (rq->buffer - (char *) bio_data(rq->bio)) / SECTOR_SIZE;
1278 rq->buffer = bio_data(rq->bio);
1279 rq->nr_sectors += n;
1282 rq->hard_cur_sectors = rq->current_nr_sectors = bio_cur_sectors(rq->bio);
1283 rq->hard_nr_sectors = rq->nr_sectors;
1284 rq->hard_sector = rq->sector;
1285 rq->q->prep_rq_fn(rq->q, rq);
1289 * Start a read request from the CD-ROM.
1291 static ide_startstop_t cdrom_start_read (ide_drive_t *drive, unsigned int block)
1293 struct cdrom_info *info = drive->driver_data;
1294 struct request *rq = HWGROUP(drive)->rq;
1295 unsigned short sectors_per_frame;
1297 sectors_per_frame = queue_hardsect_size(drive->queue) >> SECTOR_BITS;
1299 /* We may be retrying this request after an error. Fix up
1300 any weirdness which might be present in the request packet. */
1301 restore_request(rq);
1303 /* Satisfy whatever we can of this request from our cached sector. */
1304 if (cdrom_read_from_buffer(drive))
1307 blk_attempt_remerge(drive->queue, rq);
1309 /* Clear the local sector buffer. */
1310 info->nsectors_buffered = 0;
1312 /* use dma, if possible. */
1313 info->dma = drive->using_dma;
1314 if ((rq->sector & (sectors_per_frame - 1)) ||
1315 (rq->nr_sectors & (sectors_per_frame - 1)))
1320 /* Start sending the read request to the drive. */
1321 return cdrom_start_packet_command(drive, 32768, cdrom_start_read_continuation);
1324 /****************************************************************************
1325 * Execute all other packet commands.
1328 /* Interrupt routine for packet command completion. */
1329 static ide_startstop_t cdrom_pc_intr (ide_drive_t *drive)
1331 int ireason, len, thislen;
1332 struct request *rq = HWGROUP(drive)->rq;
1333 u8 lowcyl = 0, highcyl = 0;
1336 /* Check for errors. */
1337 if (cdrom_decode_status(drive, 0, &stat))
1340 /* Read the interrupt reason and the transfer length. */
1341 ireason = HWIF(drive)->INB(IDE_IREASON_REG);
1342 lowcyl = HWIF(drive)->INB(IDE_BCOUNTL_REG);
1343 highcyl = HWIF(drive)->INB(IDE_BCOUNTH_REG);
1345 len = lowcyl + (256 * highcyl);
1347 /* If DRQ is clear, the command has completed.
1348 Complain if we still have data left to transfer. */
1349 if ((stat & DRQ_STAT) == 0) {
1350 /* Some of the trailing request sense fields are optional, and
1351 some drives don't send them. Sigh. */
1352 if (rq->cmd[0] == GPCMD_REQUEST_SENSE &&
1354 rq->data_len <= 5) {
1355 while (rq->data_len > 0) {
1356 *(unsigned char *)rq->data++ = 0;
1361 if (rq->data_len == 0)
1362 cdrom_end_request(drive, 1);
1364 /* Comment this out, because this always happens
1365 right after a reset occurs, and it is annoying to
1366 always print expected stuff. */
1368 printk ("%s: cdrom_pc_intr: data underrun %d\n",
1369 drive->name, pc->buflen);
1371 rq->flags |= REQ_FAILED;
1372 cdrom_end_request(drive, 0);
1377 /* Figure out how much data to transfer. */
1378 thislen = rq->data_len;
1379 if (thislen > len) thislen = len;
1381 /* The drive wants to be written to. */
1382 if ((ireason & 3) == 0) {
1384 blk_dump_rq_flags(rq, "cdrom_pc_intr, write");
1387 /* Transfer the data. */
1388 HWIF(drive)->atapi_output_bytes(drive, rq->data, thislen);
1390 /* If we haven't moved enough data to satisfy the drive,
1391 add some padding. */
1392 while (len > thislen) {
1394 HWIF(drive)->atapi_output_bytes(drive, &dum, sizeof(dum));
1398 /* Keep count of how much data we've moved. */
1399 rq->data += thislen;
1400 rq->data_len -= thislen;
1403 /* Same drill for reading. */
1404 else if ((ireason & 3) == 2) {
1406 blk_dump_rq_flags(rq, "cdrom_pc_intr, write");
1409 /* Transfer the data. */
1410 HWIF(drive)->atapi_input_bytes(drive, rq->data, thislen);
1412 /* If we haven't moved enough data to satisfy the drive,
1413 add some padding. */
1414 while (len > thislen) {
1416 HWIF(drive)->atapi_input_bytes(drive, &dum, sizeof(dum));
1420 /* Keep count of how much data we've moved. */
1421 rq->data += thislen;
1422 rq->data_len -= thislen;
1424 if (rq->flags & REQ_SENSE)
1425 rq->sense_len += thislen;
1428 printk (KERN_ERR "%s: cdrom_pc_intr: The drive "
1429 "appears confused (ireason = 0x%02x)\n",
1430 drive->name, ireason);
1431 rq->flags |= REQ_FAILED;
1434 /* Now we wait for another interrupt. */
1435 ide_set_handler(drive, &cdrom_pc_intr, ATAPI_WAIT_PC, cdrom_timer_expiry);
1439 static ide_startstop_t cdrom_do_pc_continuation (ide_drive_t *drive)
1441 struct request *rq = HWGROUP(drive)->rq;
1444 rq->timeout = ATAPI_WAIT_PC;
1446 /* Send the command to the drive and return. */
1447 return cdrom_transfer_packet_command(drive, rq, &cdrom_pc_intr);
1451 static ide_startstop_t cdrom_do_packet_command (ide_drive_t *drive)
1454 struct request *rq = HWGROUP(drive)->rq;
1455 struct cdrom_info *info = drive->driver_data;
1459 rq->flags &= ~REQ_FAILED;
1462 /* Start sending the command to the drive. */
1463 return cdrom_start_packet_command(drive, len, cdrom_do_pc_continuation);
1468 int cdrom_queue_packet_command(ide_drive_t *drive, struct request *rq)
1470 struct request_sense sense;
1472 unsigned int flags = rq->flags;
1474 if (rq->sense == NULL)
1477 /* Start of retry loop. */
1480 unsigned long time = jiffies;
1483 error = ide_do_drive_cmd(drive, rq, ide_wait);
1484 time = jiffies - time;
1486 /* FIXME: we should probably abort/retry or something
1487 * in case of failure */
1488 if (rq->flags & REQ_FAILED) {
1489 /* The request failed. Retry if it was due to a unit
1491 (usually means media was changed). */
1492 struct request_sense *reqbuf = rq->sense;
1494 if (reqbuf->sense_key == UNIT_ATTENTION)
1495 cdrom_saw_media_change(drive);
1496 else if (reqbuf->sense_key == NOT_READY &&
1497 reqbuf->asc == 4 && reqbuf->ascq != 4) {
1498 /* The drive is in the process of loading
1499 a disk. Retry, but wait a little to give
1500 the drive time to complete the load. */
1503 /* Otherwise, don't retry. */
1509 /* End of retry loop. */
1510 } while ((rq->flags & REQ_FAILED) && retries >= 0);
1512 /* Return an error if the command failed. */
1513 return (rq->flags & REQ_FAILED) ? -EIO : 0;
1519 static inline int cdrom_write_check_ireason(ide_drive_t *drive, int len, int ireason)
1521 /* Two notes about IDE interrupt reason here - 0 means that
1522 * the drive wants to receive data from us, 2 means that
1523 * the drive is expecting to transfer data to us.
1527 else if (ireason == 2) {
1528 /* Whoops... The drive wants to send data. */
1529 printk(KERN_ERR "%s: write_intr: wrong transfer direction!\n",
1534 HWIF(drive)->atapi_input_bytes(drive, &dum, sizeof(dum));
1538 /* Drive wants a command packet, or invalid ireason... */
1539 printk(KERN_ERR "%s: write_intr: bad interrupt reason %x\n",
1540 drive->name, ireason);
1543 cdrom_end_request(drive, 0);
1547 static void post_transform_command(struct request *req)
1552 if (!blk_pc_request(req))
1556 ibuf = bio_data(req->bio);
1564 * set ansi-revision and response data as atapi
1566 if (c[0] == GPCMD_INQUIRY) {
1568 ibuf[3] = (ibuf[3] & 0xf0) | 2;
1572 typedef void (xfer_func_t)(ide_drive_t *, void *, u32);
1575 * best way to deal with dma that is not sector aligned right now... note
1576 * that in this path we are not using ->data or ->buffer at all. this irs
1577 * can replace cdrom_pc_intr, cdrom_read_intr, and cdrom_write_intr in the
1580 static ide_startstop_t cdrom_newpc_intr(ide_drive_t *drive)
1582 struct cdrom_info *info = drive->driver_data;
1583 struct request *rq = HWGROUP(drive)->rq;
1584 int dma_error, dma, stat, ireason, len, thislen;
1586 xfer_func_t *xferfunc;
1587 unsigned long flags;
1589 /* Check for errors. */
1594 dma_error = HWIF(drive)->ide_dma_end(drive);
1597 if (cdrom_decode_status(drive, 0, &stat))
1601 * using dma, transfer is complete now
1605 printk(KERN_ERR "ide-cd: dma error\n");
1606 __ide_dma_off(drive);
1607 return ide_error(drive, "dma error", stat);
1610 end_that_request_chunk(rq, 1, rq->data_len);
1616 * ok we fall to pio :/
1618 ireason = HWIF(drive)->INB(IDE_IREASON_REG) & 0x3;
1619 lowcyl = HWIF(drive)->INB(IDE_BCOUNTL_REG);
1620 highcyl = HWIF(drive)->INB(IDE_BCOUNTH_REG);
1622 len = lowcyl + (256 * highcyl);
1623 thislen = rq->data_len;
1628 * If DRQ is clear, the command has completed.
1630 if ((stat & DRQ_STAT) == 0)
1634 * check which way to transfer data
1636 if (rq_data_dir(rq) == WRITE) {
1640 if (cdrom_write_check_ireason(drive, len, ireason))
1643 xferfunc = HWIF(drive)->atapi_output_bytes;
1648 if (cdrom_read_check_ireason(drive, len, ireason))
1651 xferfunc = HWIF(drive)->atapi_input_bytes;
1657 while (thislen > 0) {
1658 int blen = blen = rq->data_len;
1659 char *ptr = rq->data;
1665 ptr = bio_data(rq->bio);
1666 blen = bio_iovec(rq->bio)->bv_len;
1670 printk(KERN_ERR "%s: confused, missing data\n", drive->name);
1677 xferfunc(drive, ptr, blen);
1681 rq->data_len -= blen;
1684 end_that_request_chunk(rq, 1, blen);
1696 xferfunc(drive, &pad, sizeof(pad));
1701 if (HWGROUP(drive)->handler != NULL)
1704 ide_set_handler(drive, cdrom_newpc_intr, rq->timeout, NULL);
1709 post_transform_command(rq);
1711 spin_lock_irqsave(&ide_lock, flags);
1712 blkdev_dequeue_request(rq);
1713 end_that_request_last(rq);
1714 HWGROUP(drive)->rq = NULL;
1715 spin_unlock_irqrestore(&ide_lock, flags);
1719 static ide_startstop_t cdrom_write_intr(ide_drive_t *drive)
1721 int stat, ireason, len, sectors_to_transfer, uptodate;
1722 struct cdrom_info *info = drive->driver_data;
1723 int dma_error = 0, dma = info->dma;
1724 u8 lowcyl = 0, highcyl = 0;
1726 struct request *rq = HWGROUP(drive)->rq;
1728 /* Check for errors. */
1731 if ((dma_error = HWIF(drive)->ide_dma_end(drive))) {
1732 printk(KERN_ERR "ide-cd: write dma error\n");
1733 __ide_dma_off(drive);
1737 if (cdrom_decode_status(drive, 0, &stat))
1741 * using dma, transfer is complete now
1745 return ide_error(drive, "dma error", stat);
1747 ide_end_request(drive, 1, rq->nr_sectors);
1751 /* Read the interrupt reason and the transfer length. */
1752 ireason = HWIF(drive)->INB(IDE_IREASON_REG);
1753 lowcyl = HWIF(drive)->INB(IDE_BCOUNTL_REG);
1754 highcyl = HWIF(drive)->INB(IDE_BCOUNTH_REG);
1756 len = lowcyl + (256 * highcyl);
1758 /* If DRQ is clear, the command has completed. */
1759 if ((stat & DRQ_STAT) == 0) {
1760 /* If we're not done writing, complain.
1761 * Otherwise, complete the command normally.
1764 if (rq->current_nr_sectors > 0) {
1765 printk(KERN_ERR "%s: write_intr: data underrun (%d blocks)\n",
1766 drive->name, rq->current_nr_sectors);
1769 cdrom_end_request(drive, uptodate);
1773 /* Check that the drive is expecting to do the same thing we are. */
1774 if (cdrom_write_check_ireason(drive, len, ireason))
1777 sectors_to_transfer = len / SECTOR_SIZE;
1780 * now loop and write out the data
1782 while (sectors_to_transfer > 0) {
1785 if (!rq->current_nr_sectors) {
1786 printk(KERN_ERR "ide-cd: write_intr: oops\n");
1791 * Figure out how many sectors we can transfer
1793 this_transfer = min_t(int, sectors_to_transfer, rq->current_nr_sectors);
1795 while (this_transfer > 0) {
1796 HWIF(drive)->atapi_output_bytes(drive, rq->buffer, SECTOR_SIZE);
1797 rq->buffer += SECTOR_SIZE;
1799 --rq->current_nr_sectors;
1802 --sectors_to_transfer;
1806 * current buffer complete, move on
1808 if (rq->current_nr_sectors == 0 && rq->nr_sectors)
1809 cdrom_end_request(drive, 1);
1812 /* re-arm handler */
1813 ide_set_handler(drive, &cdrom_write_intr, ATAPI_WAIT_PC, NULL);
1817 static ide_startstop_t cdrom_start_write_cont(ide_drive_t *drive)
1819 struct request *rq = HWGROUP(drive)->rq;
1821 #if 0 /* the immediate bit */
1822 rq->cmd[1] = 1 << 3;
1824 rq->timeout = ATAPI_WAIT_PC;
1826 return cdrom_transfer_packet_command(drive, rq, cdrom_write_intr);
1829 static ide_startstop_t cdrom_start_write(ide_drive_t *drive, struct request *rq)
1831 struct cdrom_info *info = drive->driver_data;
1832 struct gendisk *g = drive->disk;
1833 unsigned short sectors_per_frame = queue_hardsect_size(drive->queue) >> SECTOR_BITS;
1836 * writes *must* be hardware frame aligned
1838 if ((rq->nr_sectors & (sectors_per_frame - 1)) ||
1839 (rq->sector & (sectors_per_frame - 1))) {
1840 cdrom_end_request(drive, 0);
1845 * disk has become write protected
1848 cdrom_end_request(drive, 0);
1853 * for dvd-ram and such media, it's a really big deal to get
1854 * big writes all the time. so scour the queue and attempt to
1855 * remerge requests, often the plugging will not have had time
1856 * to do this properly
1858 blk_attempt_remerge(drive->queue, rq);
1860 info->nsectors_buffered = 0;
1862 /* use dma, if possible. we don't need to check more, since we
1863 * know that the transfer is always (at least!) frame aligned */
1864 info->dma = drive->using_dma ? 1 : 0;
1867 info->devinfo.media_written = 1;
1869 /* Start sending the write request to the drive. */
1870 return cdrom_start_packet_command(drive, 32768, cdrom_start_write_cont);
1873 static ide_startstop_t cdrom_do_newpc_cont(ide_drive_t *drive)
1875 struct request *rq = HWGROUP(drive)->rq;
1878 rq->timeout = ATAPI_WAIT_PC;
1880 return cdrom_transfer_packet_command(drive, rq, cdrom_newpc_intr);
1883 static ide_startstop_t cdrom_do_block_pc(ide_drive_t *drive, struct request *rq)
1885 struct cdrom_info *info = drive->driver_data;
1887 rq->flags |= REQ_QUIET;
1896 int mask = drive->queue->dma_alignment;
1897 unsigned long addr = (unsigned long) page_address(bio_page(rq->bio));
1899 info->cmd = rq_data_dir(rq);
1900 info->dma = drive->using_dma;
1903 * check if dma is safe
1905 if ((rq->data_len & mask) || (addr & mask))
1909 /* Start sending the command to the drive. */
1910 return cdrom_start_packet_command(drive, rq->data_len, cdrom_do_newpc_cont);
1913 /****************************************************************************
1914 * cdrom driver request routine.
1916 static ide_startstop_t
1917 ide_do_rw_cdrom (ide_drive_t *drive, struct request *rq, sector_t block)
1919 ide_startstop_t action;
1920 struct cdrom_info *info = drive->driver_data;
1922 if (blk_fs_request(rq)) {
1923 if (CDROM_CONFIG_FLAGS(drive)->seeking) {
1924 unsigned long elapsed = jiffies - info->start_seek;
1925 int stat = HWIF(drive)->INB(IDE_STATUS_REG);
1927 if ((stat & SEEK_STAT) != SEEK_STAT) {
1928 if (elapsed < IDECD_SEEK_TIMEOUT) {
1929 ide_stall_queue(drive, IDECD_SEEK_TIMER);
1932 printk (KERN_ERR "%s: DSC timeout\n", drive->name);
1934 CDROM_CONFIG_FLAGS(drive)->seeking = 0;
1936 if ((rq_data_dir(rq) == READ) && IDE_LARGE_SEEK(info->last_block, block, IDECD_SEEK_THRESHOLD) && drive->dsc_overlap) {
1937 action = cdrom_start_seek(drive, block);
1939 if (rq_data_dir(rq) == READ)
1940 action = cdrom_start_read(drive, block);
1942 action = cdrom_start_write(drive, rq);
1944 info->last_block = block;
1946 } else if (rq->flags & (REQ_PC | REQ_SENSE)) {
1947 return cdrom_do_packet_command(drive);
1948 } else if (rq->flags & REQ_BLOCK_PC) {
1949 return cdrom_do_block_pc(drive, rq);
1950 } else if (rq->flags & REQ_SPECIAL) {
1952 * right now this can only be a reset...
1954 cdrom_end_request(drive, 1);
1958 blk_dump_rq_flags(rq, "ide-cd bad flags");
1959 cdrom_end_request(drive, 0);
1965 /****************************************************************************
1968 * Routines which queue packet commands take as a final argument a pointer
1969 * to a request_sense struct. If execution of the command results
1970 * in an error with a CHECK CONDITION status, this structure will be filled
1971 * with the results of the subsequent request sense command. The pointer
1972 * can also be NULL, in which case no sense information is returned.
1975 #if ! STANDARD_ATAPI
1979 return (x%10) | ((x/10) << 4);
1986 return (x >> 4) * 10 + (x & 0x0f);
1990 void msf_from_bcd (struct atapi_msf *msf)
1992 msf->minute = bcd2bin (msf->minute);
1993 msf->second = bcd2bin (msf->second);
1994 msf->frame = bcd2bin (msf->frame);
1997 #endif /* not STANDARD_ATAPI */
2001 void lba_to_msf (int lba, byte *m, byte *s, byte *f)
2003 lba += CD_MSF_OFFSET;
2004 lba &= 0xffffff; /* negative lbas use only 24 bits */
2005 *m = lba / (CD_SECS * CD_FRAMES);
2006 lba %= (CD_SECS * CD_FRAMES);
2007 *s = lba / CD_FRAMES;
2008 *f = lba % CD_FRAMES;
2013 int msf_to_lba (byte m, byte s, byte f)
2015 return (((m * CD_SECS) + s) * CD_FRAMES + f) - CD_MSF_OFFSET;
2018 static int cdrom_check_status(ide_drive_t *drive, struct request_sense *sense)
2021 struct cdrom_info *info = drive->driver_data;
2022 struct cdrom_device_info *cdi = &info->devinfo;
2024 cdrom_prepare_request(&req);
2027 req.cmd[0] = GPCMD_TEST_UNIT_READY;
2028 req.flags |= REQ_QUIET;
2030 #if ! STANDARD_ATAPI
2031 /* the Sanyo 3 CD changer uses byte 7 of TEST_UNIT_READY to
2032 switch CDs instead of supporting the LOAD_UNLOAD opcode */
2034 req.cmd[7] = cdi->sanyo_slot % 3;
2035 #endif /* not STANDARD_ATAPI */
2037 return cdrom_queue_packet_command(drive, &req);
2041 /* Lock the door if LOCKFLAG is nonzero; unlock it otherwise. */
2043 cdrom_lockdoor(ide_drive_t *drive, int lockflag, struct request_sense *sense)
2045 struct request_sense my_sense;
2052 /* If the drive cannot lock the door, just pretend. */
2053 if (CDROM_CONFIG_FLAGS(drive)->no_doorlock) {
2056 cdrom_prepare_request(&req);
2058 req.cmd[0] = GPCMD_PREVENT_ALLOW_MEDIUM_REMOVAL;
2059 req.cmd[4] = lockflag ? 1 : 0;
2060 stat = cdrom_queue_packet_command(drive, &req);
2063 /* If we got an illegal field error, the drive
2064 probably cannot lock the door. */
2066 sense->sense_key == ILLEGAL_REQUEST &&
2067 (sense->asc == 0x24 || sense->asc == 0x20)) {
2068 printk (KERN_ERR "%s: door locking not supported\n",
2070 CDROM_CONFIG_FLAGS(drive)->no_doorlock = 1;
2074 /* no medium, that's alright. */
2075 if (stat != 0 && sense->sense_key == NOT_READY && sense->asc == 0x3a)
2079 CDROM_STATE_FLAGS(drive)->door_locked = lockflag;
2085 /* Eject the disk if EJECTFLAG is 0.
2086 If EJECTFLAG is 1, try to reload the disk. */
2087 static int cdrom_eject(ide_drive_t *drive, int ejectflag,
2088 struct request_sense *sense)
2093 if (CDROM_CONFIG_FLAGS(drive)->no_eject && !ejectflag)
2094 return -EDRIVE_CANT_DO_THIS;
2096 /* reload fails on some drives, if the tray is locked */
2097 if (CDROM_STATE_FLAGS(drive)->door_locked && ejectflag)
2100 cdrom_prepare_request(&req);
2102 /* only tell drive to close tray if open, if it can do that */
2103 if (ejectflag && !CDROM_CONFIG_FLAGS(drive)->close_tray)
2107 req.cmd[0] = GPCMD_START_STOP_UNIT;
2108 req.cmd[4] = loej | (ejectflag != 0);
2109 return cdrom_queue_packet_command(drive, &req);
2112 static int cdrom_read_capacity(ide_drive_t *drive, unsigned long *capacity,
2113 unsigned long *sectors_per_frame,
2114 struct request_sense *sense)
2124 cdrom_prepare_request(&req);
2127 req.cmd[0] = GPCMD_READ_CDVD_CAPACITY;
2128 req.data = (char *)&capbuf;
2129 req.data_len = sizeof(capbuf);
2131 stat = cdrom_queue_packet_command(drive, &req);
2133 *capacity = 1 + be32_to_cpu(capbuf.lba);
2134 *sectors_per_frame =
2135 be32_to_cpu(capbuf.blocklen) >> SECTOR_BITS;
2141 static int cdrom_read_tocentry(ide_drive_t *drive, int trackno, int msf_flag,
2142 int format, char *buf, int buflen,
2143 struct request_sense *sense)
2147 cdrom_prepare_request(&req);
2151 req.data_len = buflen;
2152 req.flags |= REQ_QUIET;
2153 req.cmd[0] = GPCMD_READ_TOC_PMA_ATIP;
2154 req.cmd[6] = trackno;
2155 req.cmd[7] = (buflen >> 8);
2156 req.cmd[8] = (buflen & 0xff);
2157 req.cmd[9] = (format << 6);
2162 return cdrom_queue_packet_command(drive, &req);
2166 /* Try to read the entire TOC for the disk into our internal buffer. */
2167 static int cdrom_read_toc(ide_drive_t *drive, struct request_sense *sense)
2169 int stat, ntracks, i;
2170 struct cdrom_info *info = drive->driver_data;
2171 struct cdrom_device_info *cdi = &info->devinfo;
2172 struct atapi_toc *toc = info->toc;
2174 struct atapi_toc_header hdr;
2175 struct atapi_toc_entry ent;
2178 unsigned long sectors_per_frame = SECTORS_PER_FRAME;
2181 /* Try to allocate space. */
2182 toc = (struct atapi_toc *) kmalloc (sizeof (struct atapi_toc),
2186 printk (KERN_ERR "%s: No cdrom TOC buffer!\n", drive->name);
2191 /* Check to see if the existing data is still valid.
2192 If it is, just return. */
2193 (void) cdrom_check_status(drive, sense);
2195 if (CDROM_STATE_FLAGS(drive)->toc_valid)
2198 /* Try to get the total cdrom capacity and sector size. */
2199 stat = cdrom_read_capacity(drive, &toc->capacity, §ors_per_frame,
2202 toc->capacity = 0x1fffff;
2204 set_capacity(drive->disk, toc->capacity * sectors_per_frame);
2205 blk_queue_hardsect_size(drive->queue,
2206 sectors_per_frame << SECTOR_BITS);
2208 /* First read just the header, so we know how long the TOC is. */
2209 stat = cdrom_read_tocentry(drive, 0, 1, 0, (char *) &toc->hdr,
2210 sizeof(struct atapi_toc_header), sense);
2211 if (stat) return stat;
2213 #if ! STANDARD_ATAPI
2214 if (CDROM_CONFIG_FLAGS(drive)->toctracks_as_bcd) {
2215 toc->hdr.first_track = bcd2bin(toc->hdr.first_track);
2216 toc->hdr.last_track = bcd2bin(toc->hdr.last_track);
2218 #endif /* not STANDARD_ATAPI */
2220 ntracks = toc->hdr.last_track - toc->hdr.first_track + 1;
2223 if (ntracks > MAX_TRACKS)
2224 ntracks = MAX_TRACKS;
2226 /* Now read the whole schmeer. */
2227 stat = cdrom_read_tocentry(drive, toc->hdr.first_track, 1, 0,
2229 sizeof(struct atapi_toc_header) +
2231 sizeof(struct atapi_toc_entry), sense);
2233 if (stat && toc->hdr.first_track > 1) {
2234 /* Cds with CDI tracks only don't have any TOC entries,
2235 despite of this the returned values are
2236 first_track == last_track = number of CDI tracks + 1,
2237 so that this case is indistinguishable from the same
2238 layout plus an additional audio track.
2239 If we get an error for the regular case, we assume
2240 a CDI without additional audio tracks. In this case
2241 the readable TOC is empty (CDI tracks are not included)
2242 and only holds the Leadout entry. Heiko Eißfeldt */
2244 stat = cdrom_read_tocentry(drive, CDROM_LEADOUT, 1, 0,
2246 sizeof(struct atapi_toc_header) +
2248 sizeof(struct atapi_toc_entry),
2253 #if ! STANDARD_ATAPI
2254 if (CDROM_CONFIG_FLAGS(drive)->toctracks_as_bcd) {
2255 toc->hdr.first_track = bin2bcd(CDROM_LEADOUT);
2256 toc->hdr.last_track = bin2bcd(CDROM_LEADOUT);
2258 #endif /* not STANDARD_ATAPI */
2260 toc->hdr.first_track = CDROM_LEADOUT;
2261 toc->hdr.last_track = CDROM_LEADOUT;
2268 toc->hdr.toc_length = ntohs (toc->hdr.toc_length);
2270 #if ! STANDARD_ATAPI
2271 if (CDROM_CONFIG_FLAGS(drive)->toctracks_as_bcd) {
2272 toc->hdr.first_track = bcd2bin(toc->hdr.first_track);
2273 toc->hdr.last_track = bcd2bin(toc->hdr.last_track);
2275 #endif /* not STANDARD_ATAPI */
2277 for (i=0; i<=ntracks; i++) {
2278 #if ! STANDARD_ATAPI
2279 if (CDROM_CONFIG_FLAGS(drive)->tocaddr_as_bcd) {
2280 if (CDROM_CONFIG_FLAGS(drive)->toctracks_as_bcd)
2281 toc->ent[i].track = bcd2bin(toc->ent[i].track);
2282 msf_from_bcd(&toc->ent[i].addr.msf);
2284 #endif /* not STANDARD_ATAPI */
2285 toc->ent[i].addr.lba = msf_to_lba (toc->ent[i].addr.msf.minute,
2286 toc->ent[i].addr.msf.second,
2287 toc->ent[i].addr.msf.frame);
2290 /* Read the multisession information. */
2291 if (toc->hdr.first_track != CDROM_LEADOUT) {
2292 /* Read the multisession information. */
2293 stat = cdrom_read_tocentry(drive, 0, 0, 1, (char *)&ms_tmp,
2294 sizeof(ms_tmp), sense);
2295 if (stat) return stat;
2297 toc->last_session_lba = be32_to_cpu(ms_tmp.ent.addr.lba);
2299 ms_tmp.hdr.first_track = ms_tmp.hdr.last_track = CDROM_LEADOUT;
2300 toc->last_session_lba = msf_to_lba(0, 2, 0); /* 0m 2s 0f */
2303 #if ! STANDARD_ATAPI
2304 if (CDROM_CONFIG_FLAGS(drive)->tocaddr_as_bcd) {
2305 /* Re-read multisession information using MSF format */
2306 stat = cdrom_read_tocentry(drive, 0, 1, 1, (char *)&ms_tmp,
2307 sizeof(ms_tmp), sense);
2311 msf_from_bcd (&ms_tmp.ent.addr.msf);
2312 toc->last_session_lba = msf_to_lba(ms_tmp.ent.addr.msf.minute,
2313 ms_tmp.ent.addr.msf.second,
2314 ms_tmp.ent.addr.msf.frame);
2316 #endif /* not STANDARD_ATAPI */
2318 toc->xa_flag = (ms_tmp.hdr.first_track != ms_tmp.hdr.last_track);
2320 /* Now try to get the total cdrom capacity. */
2321 stat = cdrom_get_last_written(cdi, &last_written);
2322 if (!stat && (last_written > toc->capacity)) {
2323 toc->capacity = last_written;
2324 set_capacity(drive->disk, toc->capacity * sectors_per_frame);
2327 /* Remember that we've read this stuff. */
2328 CDROM_STATE_FLAGS(drive)->toc_valid = 1;
2334 static int cdrom_read_subchannel(ide_drive_t *drive, int format, char *buf,
2335 int buflen, struct request_sense *sense)
2339 cdrom_prepare_request(&req);
2343 req.data_len = buflen;
2344 req.cmd[0] = GPCMD_READ_SUBCHANNEL;
2345 req.cmd[1] = 2; /* MSF addressing */
2346 req.cmd[2] = 0x40; /* request subQ data */
2347 req.cmd[3] = format;
2348 req.cmd[7] = (buflen >> 8);
2349 req.cmd[8] = (buflen & 0xff);
2350 return cdrom_queue_packet_command(drive, &req);
2353 /* ATAPI cdrom drives are free to select the speed you request or any slower
2354 rate :-( Requesting too fast a speed will _not_ produce an error. */
2355 static int cdrom_select_speed(ide_drive_t *drive, int speed,
2356 struct request_sense *sense)
2359 cdrom_prepare_request(&req);
2363 speed = 0xffff; /* set to max */
2365 speed *= 177; /* Nx to kbytes/s */
2367 req.cmd[0] = GPCMD_SET_SPEED;
2368 /* Read Drive speed in kbytes/second MSB */
2369 req.cmd[2] = (speed >> 8) & 0xff;
2370 /* Read Drive speed in kbytes/second LSB */
2371 req.cmd[3] = speed & 0xff;
2372 if (CDROM_CONFIG_FLAGS(drive)->cd_r ||
2373 CDROM_CONFIG_FLAGS(drive)->cd_rw ||
2374 CDROM_CONFIG_FLAGS(drive)->dvd_r) {
2375 /* Write Drive speed in kbytes/second MSB */
2376 req.cmd[4] = (speed >> 8) & 0xff;
2377 /* Write Drive speed in kbytes/second LSB */
2378 req.cmd[5] = speed & 0xff;
2381 return cdrom_queue_packet_command(drive, &req);
2384 static int cdrom_play_audio(ide_drive_t *drive, int lba_start, int lba_end)
2386 struct request_sense sense;
2389 cdrom_prepare_request(&req);
2392 req.cmd[0] = GPCMD_PLAY_AUDIO_MSF;
2393 lba_to_msf(lba_start, &req.cmd[3], &req.cmd[4], &req.cmd[5]);
2394 lba_to_msf(lba_end-1, &req.cmd[6], &req.cmd[7], &req.cmd[8]);
2396 return cdrom_queue_packet_command(drive, &req);
2399 static int cdrom_get_toc_entry(ide_drive_t *drive, int track,
2400 struct atapi_toc_entry **ent)
2402 struct cdrom_info *info = drive->driver_data;
2403 struct atapi_toc *toc = info->toc;
2407 * don't serve cached data, if the toc isn't valid
2409 if (!CDROM_STATE_FLAGS(drive)->toc_valid)
2412 /* Check validity of requested track number. */
2413 ntracks = toc->hdr.last_track - toc->hdr.first_track + 1;
2414 if (toc->hdr.first_track == CDROM_LEADOUT) ntracks = 0;
2415 if (track == CDROM_LEADOUT)
2416 *ent = &toc->ent[ntracks];
2417 else if (track < toc->hdr.first_track ||
2418 track > toc->hdr.last_track)
2421 *ent = &toc->ent[track - toc->hdr.first_track];
2426 /* the generic packet interface to cdrom.c */
2427 static int ide_cdrom_packet(struct cdrom_device_info *cdi,
2428 struct packet_command *cgc)
2431 ide_drive_t *drive = (ide_drive_t*) cdi->handle;
2433 if (cgc->timeout <= 0)
2434 cgc->timeout = ATAPI_WAIT_PC;
2436 /* here we queue the commands from the uniform CD-ROM
2437 layer. the packet must be complete, as we do not
2439 cdrom_prepare_request(&req);
2440 memcpy(req.cmd, cgc->cmd, CDROM_PACKET_SIZE);
2442 memset(cgc->sense, 0, sizeof(struct request_sense));
2443 req.data = cgc->buffer;
2444 req.data_len = cgc->buflen;
2445 req.timeout = cgc->timeout;
2448 req.flags |= REQ_QUIET;
2450 req.sense = cgc->sense;
2451 cgc->stat = cdrom_queue_packet_command(drive, &req);
2453 cgc->buflen -= req.data_len;
2458 int ide_cdrom_dev_ioctl (struct cdrom_device_info *cdi,
2459 unsigned int cmd, unsigned long arg)
2461 struct packet_command cgc;
2465 init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_UNKNOWN);
2467 /* These will be moved into the Uniform layer shortly... */
2469 case CDROMSETSPINDOWN: {
2472 if (copy_from_user(&spindown, (void __user *) arg, sizeof(char)))
2475 if ((stat = cdrom_mode_sense(cdi, &cgc, GPMODE_CDROM_PAGE, 0)))
2478 buffer[11] = (buffer[11] & 0xf0) | (spindown & 0x0f);
2480 return cdrom_mode_select(cdi, &cgc);
2483 case CDROMGETSPINDOWN: {
2486 if ((stat = cdrom_mode_sense(cdi, &cgc, GPMODE_CDROM_PAGE, 0)))
2489 spindown = buffer[11] & 0x0f;
2491 if (copy_to_user((void __user *) arg, &spindown, sizeof (char)))
2504 int ide_cdrom_audio_ioctl (struct cdrom_device_info *cdi,
2505 unsigned int cmd, void *arg)
2508 ide_drive_t *drive = (ide_drive_t*) cdi->handle;
2509 struct cdrom_info *info = drive->driver_data;
2514 * emulate PLAY_AUDIO_TI command with PLAY_AUDIO_10, since
2515 * atapi doesn't support it
2517 case CDROMPLAYTRKIND: {
2518 unsigned long lba_start, lba_end;
2519 struct cdrom_ti *ti = (struct cdrom_ti *)arg;
2520 struct atapi_toc_entry *first_toc, *last_toc;
2522 stat = cdrom_get_toc_entry(drive, ti->cdti_trk0, &first_toc);
2526 stat = cdrom_get_toc_entry(drive, ti->cdti_trk1, &last_toc);
2530 if (ti->cdti_trk1 != CDROM_LEADOUT)
2532 lba_start = first_toc->addr.lba;
2533 lba_end = last_toc->addr.lba;
2535 if (lba_end <= lba_start)
2538 return cdrom_play_audio(drive, lba_start, lba_end);
2541 case CDROMREADTOCHDR: {
2542 struct cdrom_tochdr *tochdr = (struct cdrom_tochdr *) arg;
2543 struct atapi_toc *toc;
2545 /* Make sure our saved TOC is valid. */
2546 stat = cdrom_read_toc(drive, NULL);
2547 if (stat) return stat;
2550 tochdr->cdth_trk0 = toc->hdr.first_track;
2551 tochdr->cdth_trk1 = toc->hdr.last_track;
2556 case CDROMREADTOCENTRY: {
2557 struct cdrom_tocentry *tocentry = (struct cdrom_tocentry*) arg;
2558 struct atapi_toc_entry *toce;
2560 stat = cdrom_get_toc_entry(drive, tocentry->cdte_track, &toce);
2561 if (stat) return stat;
2563 tocentry->cdte_ctrl = toce->control;
2564 tocentry->cdte_adr = toce->adr;
2565 if (tocentry->cdte_format == CDROM_MSF) {
2566 lba_to_msf (toce->addr.lba,
2567 &tocentry->cdte_addr.msf.minute,
2568 &tocentry->cdte_addr.msf.second,
2569 &tocentry->cdte_addr.msf.frame);
2571 tocentry->cdte_addr.lba = toce->addr.lba;
2582 int ide_cdrom_reset (struct cdrom_device_info *cdi)
2584 ide_drive_t *drive = (ide_drive_t*) cdi->handle;
2585 struct request_sense sense;
2589 cdrom_prepare_request(&req);
2590 req.flags = REQ_SPECIAL | REQ_QUIET;
2591 ret = ide_do_drive_cmd(drive, &req, ide_wait);
2594 * A reset will unlock the door. If it was previously locked,
2597 if (CDROM_STATE_FLAGS(drive)->door_locked)
2598 (void) cdrom_lockdoor(drive, 1, &sense);
2605 int ide_cdrom_tray_move (struct cdrom_device_info *cdi, int position)
2607 ide_drive_t *drive = (ide_drive_t*) cdi->handle;
2608 struct request_sense sense;
2611 int stat = cdrom_lockdoor(drive, 0, &sense);
2612 if (stat) return stat;
2615 return cdrom_eject(drive, !position, &sense);
2619 int ide_cdrom_lock_door (struct cdrom_device_info *cdi, int lock)
2621 ide_drive_t *drive = (ide_drive_t*) cdi->handle;
2622 return cdrom_lockdoor(drive, lock, NULL);
2626 int ide_cdrom_select_speed (struct cdrom_device_info *cdi, int speed)
2628 ide_drive_t *drive = (ide_drive_t*) cdi->handle;
2629 struct request_sense sense;
2632 if ((stat = cdrom_select_speed(drive, speed, &sense)) < 0)
2635 cdi->speed = CDROM_STATE_FLAGS(drive)->current_speed;
2640 * add logic to try GET_EVENT command first to check for media and tray
2641 * status. this should be supported by newer cd-r/w and all DVD etc
2645 int ide_cdrom_drive_status (struct cdrom_device_info *cdi, int slot_nr)
2647 ide_drive_t *drive = (ide_drive_t*) cdi->handle;
2648 struct media_event_desc med;
2649 struct request_sense sense;
2652 if (slot_nr != CDSL_CURRENT)
2655 stat = cdrom_check_status(drive, &sense);
2656 if (!stat || sense.sense_key == UNIT_ATTENTION)
2659 if (!cdrom_get_media_event(cdi, &med)) {
2660 if (med.media_present)
2662 else if (med.door_open)
2663 return CDS_TRAY_OPEN;
2668 if (sense.sense_key == NOT_READY && sense.asc == 0x04 && sense.ascq == 0x04)
2672 * If not using Mt Fuji extended media tray reports,
2673 * just return TRAY_OPEN since ATAPI doesn't provide
2674 * any other way to detect this...
2676 if (sense.sense_key == NOT_READY) {
2677 if (sense.asc == 0x3a) {
2678 if (sense.ascq == 1)
2680 else if (sense.ascq == 0 || sense.ascq == 2)
2681 return CDS_TRAY_OPEN;
2685 return CDS_DRIVE_NOT_READY;
2689 int ide_cdrom_get_last_session (struct cdrom_device_info *cdi,
2690 struct cdrom_multisession *ms_info)
2692 struct atapi_toc *toc;
2693 ide_drive_t *drive = (ide_drive_t*) cdi->handle;
2694 struct cdrom_info *info = drive->driver_data;
2695 struct request_sense sense;
2698 if (!CDROM_STATE_FLAGS(drive)->toc_valid || info->toc == NULL)
2699 if ((ret = cdrom_read_toc(drive, &sense)))
2703 ms_info->addr.lba = toc->last_session_lba;
2704 ms_info->xa_flag = toc->xa_flag;
2710 int ide_cdrom_get_mcn (struct cdrom_device_info *cdi,
2711 struct cdrom_mcn *mcn_info)
2715 ide_drive_t *drive = (ide_drive_t*) cdi->handle;
2718 if ((stat = cdrom_read_subchannel(drive, 2, mcnbuf, sizeof (mcnbuf), NULL)))
2721 memcpy (mcn_info->medium_catalog_number, mcnbuf+9,
2722 sizeof (mcn_info->medium_catalog_number)-1);
2723 mcn_info->medium_catalog_number[sizeof (mcn_info->medium_catalog_number)-1]
2731 /****************************************************************************
2732 * Other driver requests (open, close, check media change).
2736 int ide_cdrom_check_media_change_real (struct cdrom_device_info *cdi,
2739 ide_drive_t *drive = (ide_drive_t*) cdi->handle;
2742 if (slot_nr == CDSL_CURRENT) {
2743 (void) cdrom_check_status(drive, NULL);
2744 retval = CDROM_STATE_FLAGS(drive)->media_changed;
2745 CDROM_STATE_FLAGS(drive)->media_changed = 0;
2754 int ide_cdrom_open_real (struct cdrom_device_info *cdi, int purpose)
2760 * Close down the device. Invalidate all cached blocks.
2764 void ide_cdrom_release_real (struct cdrom_device_info *cdi)
2766 ide_drive_t *drive = cdi->handle;
2768 if (!cdi->use_count)
2769 CDROM_STATE_FLAGS(drive)->toc_valid = 0;
2774 /****************************************************************************
2775 * Device initialization.
2777 static struct cdrom_device_ops ide_cdrom_dops = {
2778 .open = ide_cdrom_open_real,
2779 .release = ide_cdrom_release_real,
2780 .drive_status = ide_cdrom_drive_status,
2781 .media_changed = ide_cdrom_check_media_change_real,
2782 .tray_move = ide_cdrom_tray_move,
2783 .lock_door = ide_cdrom_lock_door,
2784 .select_speed = ide_cdrom_select_speed,
2785 .get_last_session = ide_cdrom_get_last_session,
2786 .get_mcn = ide_cdrom_get_mcn,
2787 .reset = ide_cdrom_reset,
2788 .audio_ioctl = ide_cdrom_audio_ioctl,
2789 .dev_ioctl = ide_cdrom_dev_ioctl,
2790 .capability = CDC_CLOSE_TRAY | CDC_OPEN_TRAY | CDC_LOCK |
2791 CDC_SELECT_SPEED | CDC_SELECT_DISC |
2792 CDC_MULTI_SESSION | CDC_MCN |
2793 CDC_MEDIA_CHANGED | CDC_PLAY_AUDIO | CDC_RESET |
2794 CDC_IOCTLS | CDC_DRIVE_STATUS | CDC_CD_R |
2795 CDC_CD_RW | CDC_DVD | CDC_DVD_R| CDC_DVD_RAM |
2796 CDC_GENERIC_PACKET | CDC_MO_DRIVE | CDC_MRW |
2797 CDC_MRW_W | CDC_RAM,
2798 .generic_packet = ide_cdrom_packet,
2801 static int ide_cdrom_register (ide_drive_t *drive, int nslots)
2803 struct cdrom_info *info = drive->driver_data;
2804 struct cdrom_device_info *devinfo = &info->devinfo;
2806 devinfo->ops = &ide_cdrom_dops;
2808 devinfo->speed = CDROM_STATE_FLAGS(drive)->current_speed;
2809 devinfo->capacity = nslots;
2810 devinfo->handle = (void *) drive;
2811 strcpy(devinfo->name, drive->name);
2813 /* set capability mask to match the probe. */
2814 if (!CDROM_CONFIG_FLAGS(drive)->cd_r)
2815 devinfo->mask |= CDC_CD_R;
2816 if (!CDROM_CONFIG_FLAGS(drive)->cd_rw)
2817 devinfo->mask |= CDC_CD_RW;
2818 if (!CDROM_CONFIG_FLAGS(drive)->dvd)
2819 devinfo->mask |= CDC_DVD;
2820 if (!CDROM_CONFIG_FLAGS(drive)->dvd_r)
2821 devinfo->mask |= CDC_DVD_R;
2822 if (!CDROM_CONFIG_FLAGS(drive)->dvd_ram)
2823 devinfo->mask |= CDC_DVD_RAM;
2824 if (!CDROM_CONFIG_FLAGS(drive)->is_changer)
2825 devinfo->mask |= CDC_SELECT_DISC;
2826 if (!CDROM_CONFIG_FLAGS(drive)->audio_play)
2827 devinfo->mask |= CDC_PLAY_AUDIO;
2828 if (!CDROM_CONFIG_FLAGS(drive)->close_tray)
2829 devinfo->mask |= CDC_CLOSE_TRAY;
2830 if (!CDROM_CONFIG_FLAGS(drive)->mo_drive)
2831 devinfo->mask |= CDC_MO_DRIVE;
2833 devinfo->disk = drive->disk;
2834 return register_cdrom(devinfo);
2838 int ide_cdrom_get_capabilities(ide_drive_t *drive, struct atapi_capabilities_page *cap)
2840 struct cdrom_info *info = drive->driver_data;
2841 struct cdrom_device_info *cdi = &info->devinfo;
2842 struct packet_command cgc;
2843 int stat, attempts = 3, size = sizeof(*cap);
2846 * ACER50 (and others?) require the full spec length mode sense
2847 * page capabilities size, but older drives break.
2849 if (!(!strcmp(drive->id->model, "ATAPI CD ROM DRIVE 50X MAX") ||
2850 !strcmp(drive->id->model, "WPI CDS-32X")))
2851 size -= sizeof(cap->pad);
2853 init_cdrom_command(&cgc, cap, size, CGC_DATA_UNKNOWN);
2854 do { /* we seem to get stat=0x01,err=0x00 the first time (??) */
2855 stat = cdrom_mode_sense(cdi, &cgc, GPMODE_CAPABILITIES_PAGE, 0);
2858 } while (--attempts);
2863 int ide_cdrom_probe_capabilities (ide_drive_t *drive)
2865 struct cdrom_info *info = drive->driver_data;
2866 struct cdrom_device_info *cdi = &info->devinfo;
2867 struct atapi_capabilities_page cap;
2870 if (drive->media == ide_optical) {
2871 CDROM_CONFIG_FLAGS(drive)->mo_drive = 1;
2872 CDROM_CONFIG_FLAGS(drive)->ram = 1;
2873 printk(KERN_ERR "%s: ATAPI magneto-optical drive\n", drive->name);
2877 if (CDROM_CONFIG_FLAGS(drive)->nec260 ||
2878 !strcmp(drive->id->model,"STINGRAY 8422 IDE 8X CD-ROM 7-27-95")) {
2879 CDROM_CONFIG_FLAGS(drive)->no_eject = 0;
2880 CDROM_CONFIG_FLAGS(drive)->audio_play = 1;
2885 * we have to cheat a little here. the packet will eventually
2886 * be queued with ide_cdrom_packet(), which extracts the
2887 * drive from cdi->handle. Since this device hasn't been
2888 * registered with the Uniform layer yet, it can't do this.
2889 * Same goes for cdi->ops.
2891 cdi->handle = (ide_drive_t *) drive;
2892 cdi->ops = &ide_cdrom_dops;
2894 if (ide_cdrom_get_capabilities(drive, &cap))
2898 CDROM_CONFIG_FLAGS(drive)->no_doorlock = 1;
2900 CDROM_CONFIG_FLAGS(drive)->no_eject = 0;
2902 CDROM_CONFIG_FLAGS(drive)->cd_r = 1;
2903 if (cap.cd_rw_write) {
2904 CDROM_CONFIG_FLAGS(drive)->cd_rw = 1;
2905 CDROM_CONFIG_FLAGS(drive)->ram = 1;
2908 CDROM_CONFIG_FLAGS(drive)->test_write = 1;
2909 if (cap.dvd_ram_read || cap.dvd_r_read || cap.dvd_rom)
2910 CDROM_CONFIG_FLAGS(drive)->dvd = 1;
2911 if (cap.dvd_ram_write) {
2912 CDROM_CONFIG_FLAGS(drive)->dvd_ram = 1;
2913 CDROM_CONFIG_FLAGS(drive)->ram = 1;
2915 if (cap.dvd_r_write)
2916 CDROM_CONFIG_FLAGS(drive)->dvd_r = 1;
2918 CDROM_CONFIG_FLAGS(drive)->audio_play = 1;
2919 if (cap.mechtype == mechtype_caddy || cap.mechtype == mechtype_popup)
2920 CDROM_CONFIG_FLAGS(drive)->close_tray = 0;
2922 /* Some drives used by Apple don't advertise audio play
2923 * but they do support reading TOC & audio datas
2925 if (strcmp(drive->id->model, "MATSHITADVD-ROM SR-8187") == 0 ||
2926 strcmp(drive->id->model, "MATSHITADVD-ROM SR-8186") == 0 ||
2927 strcmp(drive->id->model, "MATSHITADVD-ROM SR-8176") == 0 ||
2928 strcmp(drive->id->model, "MATSHITADVD-ROM SR-8174") == 0)
2929 CDROM_CONFIG_FLAGS(drive)->audio_play = 1;
2931 #if ! STANDARD_ATAPI
2932 if (cdi->sanyo_slot > 0) {
2933 CDROM_CONFIG_FLAGS(drive)->is_changer = 1;
2938 #endif /* not STANDARD_ATAPI */
2939 if (cap.mechtype == mechtype_individual_changer ||
2940 cap.mechtype == mechtype_cartridge_changer) {
2941 if ((nslots = cdrom_number_of_slots(cdi)) > 1) {
2942 CDROM_CONFIG_FLAGS(drive)->is_changer = 1;
2943 CDROM_CONFIG_FLAGS(drive)->supp_disc_present = 1;
2947 /* The ACER/AOpen 24X cdrom has the speed fields byte-swapped */
2948 if (!drive->id->model[0] &&
2949 !strncmp(drive->id->fw_rev, "241N", 4)) {
2950 CDROM_STATE_FLAGS(drive)->current_speed =
2951 (((unsigned int)cap.curspeed) + (176/2)) / 176;
2952 CDROM_CONFIG_FLAGS(drive)->max_speed =
2953 (((unsigned int)cap.maxspeed) + (176/2)) / 176;
2955 CDROM_STATE_FLAGS(drive)->current_speed =
2956 (ntohs(cap.curspeed) + (176/2)) / 176;
2957 CDROM_CONFIG_FLAGS(drive)->max_speed =
2958 (ntohs(cap.maxspeed) + (176/2)) / 176;
2961 /* don't print speed if the drive reported 0.
2963 printk(KERN_INFO "%s: ATAPI", drive->name);
2964 if (CDROM_CONFIG_FLAGS(drive)->max_speed)
2965 printk(" %dX", CDROM_CONFIG_FLAGS(drive)->max_speed);
2966 printk(" %s", CDROM_CONFIG_FLAGS(drive)->dvd ? "DVD-ROM" : "CD-ROM");
2968 if (CDROM_CONFIG_FLAGS(drive)->dvd_r|CDROM_CONFIG_FLAGS(drive)->dvd_ram)
2970 (CDROM_CONFIG_FLAGS(drive)->dvd_r)? "-R" : "",
2971 (CDROM_CONFIG_FLAGS(drive)->dvd_ram)? "-RAM" : "");
2973 if (CDROM_CONFIG_FLAGS(drive)->cd_r|CDROM_CONFIG_FLAGS(drive)->cd_rw)
2975 (CDROM_CONFIG_FLAGS(drive)->cd_r)? "-R" : "",
2976 (CDROM_CONFIG_FLAGS(drive)->cd_rw)? "/RW" : "");
2978 if (CDROM_CONFIG_FLAGS(drive)->is_changer)
2979 printk(" changer w/%d slots", nslots);
2983 printk(", %dkB Cache", be16_to_cpu(cap.buffer_size));
2985 if (drive->using_dma)
2986 ide_dma_verbose(drive);
2993 static void ide_cdrom_add_settings(ide_drive_t *drive)
2995 ide_add_setting(drive, "dsc_overlap", SETTING_RW, -1, -1, TYPE_BYTE, 0, 1, 1, 1, &drive->dsc_overlap, NULL);
2999 * standard prep_rq_fn that builds 10 byte cmds
3001 static int ide_cdrom_prep_fs(request_queue_t *q, struct request *rq)
3003 int hard_sect = queue_hardsect_size(q);
3004 long block = (long)rq->hard_sector / (hard_sect >> 9);
3005 unsigned long blocks = rq->hard_nr_sectors / (hard_sect >> 9);
3007 memset(rq->cmd, 0, sizeof(rq->cmd));
3009 if (rq_data_dir(rq) == READ)
3010 rq->cmd[0] = GPCMD_READ_10;
3012 rq->cmd[0] = GPCMD_WRITE_10;
3017 rq->cmd[2] = (block >> 24) & 0xff;
3018 rq->cmd[3] = (block >> 16) & 0xff;
3019 rq->cmd[4] = (block >> 8) & 0xff;
3020 rq->cmd[5] = block & 0xff;
3023 * and transfer length
3025 rq->cmd[7] = (blocks >> 8) & 0xff;
3026 rq->cmd[8] = blocks & 0xff;
3032 * Most of the SCSI commands are supported directly by ATAPI devices.
3033 * This transform handles the few exceptions.
3035 static int ide_cdrom_prep_pc(struct request *rq)
3040 * Transform 6-byte read/write commands to the 10-byte version
3042 if (c[0] == READ_6 || c[0] == WRITE_6) {
3049 c[0] += (READ_10 - READ_6);
3055 * it's silly to pretend we understand 6-byte sense commands, just
3056 * reject with ILLEGAL_REQUEST and the caller should take the
3057 * appropriate action
3059 if (c[0] == MODE_SENSE || c[0] == MODE_SELECT) {
3060 rq->errors = ILLEGAL_REQUEST;
3061 return BLKPREP_KILL;
3067 static int ide_cdrom_prep_fn(request_queue_t *q, struct request *rq)
3069 if (rq->flags & REQ_CMD)
3070 return ide_cdrom_prep_fs(q, rq);
3071 else if (rq->flags & REQ_BLOCK_PC)
3072 return ide_cdrom_prep_pc(rq);
3078 int ide_cdrom_setup (ide_drive_t *drive)
3080 struct cdrom_info *info = drive->driver_data;
3081 struct cdrom_device_info *cdi = &info->devinfo;
3084 blk_queue_prep_rq(drive->queue, ide_cdrom_prep_fn);
3085 blk_queue_dma_alignment(drive->queue, 31);
3086 drive->queue->unplug_delay = (1 * HZ) / 1000;
3087 if (!drive->queue->unplug_delay)
3088 drive->queue->unplug_delay = 1;
3090 drive->special.all = 0;
3091 drive->ready_stat = 0;
3093 CDROM_STATE_FLAGS(drive)->media_changed = 1;
3094 CDROM_STATE_FLAGS(drive)->toc_valid = 0;
3095 CDROM_STATE_FLAGS(drive)->door_locked = 0;
3098 CDROM_CONFIG_FLAGS(drive)->no_doorlock = 1;
3100 CDROM_CONFIG_FLAGS(drive)->no_doorlock = 0;
3103 CDROM_CONFIG_FLAGS(drive)->drq_interrupt = ((drive->id->config & 0x0060) == 0x20);
3104 CDROM_CONFIG_FLAGS(drive)->is_changer = 0;
3105 CDROM_CONFIG_FLAGS(drive)->cd_r = 0;
3106 CDROM_CONFIG_FLAGS(drive)->cd_rw = 0;
3107 CDROM_CONFIG_FLAGS(drive)->test_write = 0;
3108 CDROM_CONFIG_FLAGS(drive)->dvd = 0;
3109 CDROM_CONFIG_FLAGS(drive)->dvd_r = 0;
3110 CDROM_CONFIG_FLAGS(drive)->dvd_ram = 0;
3111 CDROM_CONFIG_FLAGS(drive)->no_eject = 1;
3112 CDROM_CONFIG_FLAGS(drive)->supp_disc_present = 0;
3113 CDROM_CONFIG_FLAGS(drive)->audio_play = 0;
3114 CDROM_CONFIG_FLAGS(drive)->close_tray = 1;
3116 /* limit transfer size per interrupt. */
3117 CDROM_CONFIG_FLAGS(drive)->limit_nframes = 0;
3118 /* a testament to the nice quality of Samsung drives... */
3119 if (!strcmp(drive->id->model, "SAMSUNG CD-ROM SCR-2430"))
3120 CDROM_CONFIG_FLAGS(drive)->limit_nframes = 1;
3121 else if (!strcmp(drive->id->model, "SAMSUNG CD-ROM SCR-2432"))
3122 CDROM_CONFIG_FLAGS(drive)->limit_nframes = 1;
3123 /* the 3231 model does not support the SET_CD_SPEED command */
3124 else if (!strcmp(drive->id->model, "SAMSUNG CD-ROM SCR-3231"))
3125 cdi->mask |= CDC_SELECT_SPEED;
3127 #if ! STANDARD_ATAPI
3128 /* by default Sanyo 3 CD changer support is turned off and
3129 ATAPI Rev 2.2+ standard support for CD changers is used */
3130 cdi->sanyo_slot = 0;
3132 CDROM_CONFIG_FLAGS(drive)->nec260 = 0;
3133 CDROM_CONFIG_FLAGS(drive)->toctracks_as_bcd = 0;
3134 CDROM_CONFIG_FLAGS(drive)->tocaddr_as_bcd = 0;
3135 CDROM_CONFIG_FLAGS(drive)->playmsf_as_bcd = 0;
3136 CDROM_CONFIG_FLAGS(drive)->subchan_as_bcd = 0;
3138 if (strcmp (drive->id->model, "V003S0DS") == 0 &&
3139 drive->id->fw_rev[4] == '1' &&
3140 drive->id->fw_rev[6] <= '2') {
3142 Some versions of this drive like to talk BCD. */
3143 CDROM_CONFIG_FLAGS(drive)->toctracks_as_bcd = 1;
3144 CDROM_CONFIG_FLAGS(drive)->tocaddr_as_bcd = 1;
3145 CDROM_CONFIG_FLAGS(drive)->playmsf_as_bcd = 1;
3146 CDROM_CONFIG_FLAGS(drive)->subchan_as_bcd = 1;
3149 else if (strcmp (drive->id->model, "V006E0DS") == 0 &&
3150 drive->id->fw_rev[4] == '1' &&
3151 drive->id->fw_rev[6] <= '2') {
3152 /* Vertos 600 ESD. */
3153 CDROM_CONFIG_FLAGS(drive)->toctracks_as_bcd = 1;
3155 else if (strcmp(drive->id->model, "NEC CD-ROM DRIVE:260") == 0 &&
3156 strncmp(drive->id->fw_rev, "1.01", 4) == 0) { /* FIXME */
3157 /* Old NEC260 (not R).
3158 This drive was released before the 1.2 version
3160 CDROM_CONFIG_FLAGS(drive)->tocaddr_as_bcd = 1;
3161 CDROM_CONFIG_FLAGS(drive)->playmsf_as_bcd = 1;
3162 CDROM_CONFIG_FLAGS(drive)->subchan_as_bcd = 1;
3163 CDROM_CONFIG_FLAGS(drive)->nec260 = 1;
3165 else if (strcmp(drive->id->model, "WEARNES CDD-120") == 0 &&
3166 strncmp(drive->id->fw_rev, "A1.1", 4) == 0) { /* FIXME */
3168 CDROM_CONFIG_FLAGS(drive)->playmsf_as_bcd = 1;
3169 CDROM_CONFIG_FLAGS(drive)->subchan_as_bcd = 1;
3171 /* Sanyo 3 CD changer uses a non-standard command
3173 else if ((strcmp(drive->id->model, "CD-ROM CDR-C3 G") == 0) ||
3174 (strcmp(drive->id->model, "CD-ROM CDR-C3G") == 0) ||
3175 (strcmp(drive->id->model, "CD-ROM CDR_C36") == 0)) {
3176 /* uses CD in slot 0 when value is set to 3 */
3177 cdi->sanyo_slot = 3;
3179 #endif /* not STANDARD_ATAPI */
3182 info->buffer = NULL;
3183 info->sector_buffered = 0;
3184 info->nsectors_buffered = 0;
3185 info->changer_info = NULL;
3186 info->last_block = 0;
3187 info->start_seek = 0;
3189 nslots = ide_cdrom_probe_capabilities (drive);
3192 * set correct block size
3194 blk_queue_hardsect_size(drive->queue, CD_FRAMESIZE);
3197 drive->dsc_overlap = (HWIF(drive)->no_dsc) ? 0 : 1;
3198 if (HWIF(drive)->no_dsc) {
3199 printk(KERN_INFO "ide-cd: %s: disabling DSC overlap\n",
3201 drive->dsc_overlap = 0;
3205 if (ide_cdrom_register(drive, nslots)) {
3206 printk (KERN_ERR "%s: ide_cdrom_setup failed to register device with the cdrom driver.\n", drive->name);
3207 info->devinfo.handle = NULL;
3210 ide_cdrom_add_settings(drive);
3215 sector_t ide_cdrom_capacity (ide_drive_t *drive)
3217 unsigned long capacity, sectors_per_frame;
3219 if (cdrom_read_capacity(drive, &capacity, §ors_per_frame, NULL))
3222 return capacity * sectors_per_frame;
3226 int ide_cdrom_cleanup(ide_drive_t *drive)
3228 struct cdrom_info *info = drive->driver_data;
3229 struct cdrom_device_info *devinfo = &info->devinfo;
3230 struct gendisk *g = drive->disk;
3232 if (ide_unregister_subdriver(drive)) {
3233 printk(KERN_ERR "%s: %s: failed to ide_unregister_subdriver\n",
3234 __FUNCTION__, drive->name);
3237 if (info->buffer != NULL)
3238 kfree(info->buffer);
3239 if (info->toc != NULL)
3241 if (info->changer_info != NULL)
3242 kfree(info->changer_info);
3243 if (devinfo->handle == drive && unregister_cdrom(devinfo))
3244 printk(KERN_ERR "%s: ide_cdrom_cleanup failed to unregister device from the cdrom driver.\n", drive->name);
3246 drive->driver_data = NULL;
3247 blk_queue_prep_rq(drive->queue, NULL);
3253 static int ide_cdrom_attach (ide_drive_t *drive);
3256 * Power Management state machine.
3258 * We don't do much for CDs right now.
3261 static void ide_cdrom_complete_power_step (ide_drive_t *drive, struct request *rq, u8 stat, u8 error)
3265 static ide_startstop_t ide_cdrom_start_power_step (ide_drive_t *drive, struct request *rq)
3267 ide_task_t *args = rq->special;
3269 memset(args, 0, sizeof(*args));
3271 switch (rq->pm->pm_step) {
3272 case ide_pm_state_start_suspend:
3275 case ide_pm_state_start_resume: /* Resume step 1 (restore DMA) */
3277 * Right now, all we do is call hwif->ide_dma_check(drive),
3278 * we could be smarter and check for current xfer_speed
3279 * in struct drive etc...
3280 * Also, this step could be implemented as a generic helper
3281 * as most subdrivers will use it.
3283 if ((drive->id->capability & 1) == 0)
3285 if (HWIF(drive)->ide_dma_check == NULL)
3287 HWIF(drive)->ide_dma_check(drive);
3290 rq->pm->pm_step = ide_pm_state_completed;
3294 static ide_driver_t ide_cdrom_driver = {
3295 .owner = THIS_MODULE,
3296 .name = "ide-cdrom",
3297 .version = IDECD_VERSION,
3300 .supports_dsc_overlap = 1,
3301 .cleanup = ide_cdrom_cleanup,
3302 .do_request = ide_do_rw_cdrom,
3303 .capacity = ide_cdrom_capacity,
3304 .attach = ide_cdrom_attach,
3305 .drives = LIST_HEAD_INIT(ide_cdrom_driver.drives),
3306 .start_power_step = ide_cdrom_start_power_step,
3307 .complete_power_step = ide_cdrom_complete_power_step,
3310 static int idecd_open(struct inode * inode, struct file * file)
3312 ide_drive_t *drive = inode->i_bdev->bd_disk->private_data;
3313 struct cdrom_info *info = drive->driver_data;
3318 info->buffer = kmalloc(SECTOR_BUFFER_SIZE,
3319 GFP_KERNEL|__GFP_REPEAT);
3320 if (!info->buffer || (rc = cdrom_open(&info->devinfo, inode, file)))
3325 static int idecd_release(struct inode * inode, struct file * file)
3327 ide_drive_t *drive = inode->i_bdev->bd_disk->private_data;
3328 struct cdrom_info *info = drive->driver_data;
3330 cdrom_release (&info->devinfo, file);
3335 static int idecd_ioctl (struct inode *inode, struct file *file,
3336 unsigned int cmd, unsigned long arg)
3338 struct block_device *bdev = inode->i_bdev;
3339 ide_drive_t *drive = bdev->bd_disk->private_data;
3340 int err = generic_ide_ioctl(file, bdev, cmd, arg);
3341 if (err == -EINVAL) {
3342 struct cdrom_info *info = drive->driver_data;
3343 err = cdrom_ioctl(file, &info->devinfo, inode, cmd, arg);
3348 static int idecd_media_changed(struct gendisk *disk)
3350 ide_drive_t *drive = disk->private_data;
3351 struct cdrom_info *info = drive->driver_data;
3352 return cdrom_media_changed(&info->devinfo);
3355 static int idecd_revalidate_disk(struct gendisk *disk)
3357 ide_drive_t *drive = disk->private_data;
3358 struct request_sense sense;
3359 cdrom_read_toc(drive, &sense);
3363 static struct block_device_operations idecd_ops = {
3364 .owner = THIS_MODULE,
3366 .release = idecd_release,
3367 .ioctl = idecd_ioctl,
3368 .media_changed = idecd_media_changed,
3369 .revalidate_disk= idecd_revalidate_disk
3373 static char *ignore = NULL;
3375 module_param(ignore, charp, 0400);
3376 MODULE_DESCRIPTION("ATAPI CD-ROM Driver");
3378 static int ide_cdrom_attach (ide_drive_t *drive)
3380 struct cdrom_info *info;
3381 struct gendisk *g = drive->disk;
3382 struct request_sense sense;
3384 if (!strstr("ide-cdrom", drive->driver_req))
3386 if (!drive->present)
3388 if (drive->media != ide_cdrom && drive->media != ide_optical)
3390 /* skip drives that we were told to ignore */
3391 if (ignore != NULL) {
3392 if (strstr(ignore, drive->name)) {
3393 printk(KERN_INFO "ide-cd: ignoring drive %s\n", drive->name);
3398 printk(KERN_INFO "ide-cd: passing drive %s to ide-scsi emulation.\n", drive->name);
3401 info = (struct cdrom_info *) kmalloc (sizeof (struct cdrom_info), GFP_KERNEL);
3403 printk(KERN_ERR "%s: Can't allocate a cdrom structure\n", drive->name);
3406 if (ide_register_subdriver(drive, &ide_cdrom_driver)) {
3407 printk(KERN_ERR "%s: Failed to register the driver with ide.c\n",
3412 memset(info, 0, sizeof (struct cdrom_info));
3413 drive->driver_data = info;
3414 DRIVER(drive)->busy++;
3416 snprintf(g->devfs_name, sizeof(g->devfs_name),
3417 "%s/cd", drive->devfs_name);
3418 g->driverfs_dev = &drive->gendev;
3419 g->flags = GENHD_FL_CD | GENHD_FL_REMOVABLE;
3420 if (ide_cdrom_setup(drive)) {
3421 struct cdrom_device_info *devinfo = &info->devinfo;
3422 DRIVER(drive)->busy--;
3423 ide_unregister_subdriver(drive);
3424 if (info->buffer != NULL)
3425 kfree(info->buffer);
3426 if (info->toc != NULL)
3428 if (info->changer_info != NULL)
3429 kfree(info->changer_info);
3430 if (devinfo->handle == drive && unregister_cdrom(devinfo))
3431 printk (KERN_ERR "%s: ide_cdrom_cleanup failed to unregister device from the cdrom driver.\n", drive->name);
3433 drive->driver_data = NULL;
3436 DRIVER(drive)->busy--;
3438 cdrom_read_toc(drive, &sense);
3439 g->fops = &idecd_ops;
3440 g->flags |= GENHD_FL_REMOVABLE;
3447 static void __exit ide_cdrom_exit(void)
3449 ide_unregister_driver(&ide_cdrom_driver);
3452 static int ide_cdrom_init(void)
3454 ide_register_driver(&ide_cdrom_driver);
3458 module_init(ide_cdrom_init);
3459 module_exit(ide_cdrom_exit);
3460 MODULE_LICENSE("GPL");