4 * Copyright (C) 1994-1996 Scott Snyder <snyder@fnald0.fnal.gov>
5 * Copyright (C) 1996-1998 Erik Andersen <andersee@debian.org>
6 * Copyright (C) 1998-2000 Jens Axboe <axboe@suse.de>
7 * Copyright (C) 2005, 2007 Bartlomiej Zolnierkiewicz
9 * May be copied or modified under the terms of the GNU General Public
10 * License. See linux/COPYING for more information.
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 * For historical changelog please see:
23 * Documentation/ide/ChangeLog.ide-cd.1994-2004
26 #define DRV_NAME "ide-cd"
27 #define PFX DRV_NAME ": "
29 #define IDECD_VERSION "5.00"
31 #include <linux/module.h>
32 #include <linux/types.h>
33 #include <linux/kernel.h>
34 #include <linux/delay.h>
35 #include <linux/timer.h>
36 #include <linux/slab.h>
37 #include <linux/interrupt.h>
38 #include <linux/errno.h>
39 #include <linux/cdrom.h>
40 #include <linux/ide.h>
41 #include <linux/completion.h>
42 #include <linux/mutex.h>
43 #include <linux/bcd.h>
45 /* For SCSI -> ATAPI command conversion */
46 #include <scsi/scsi.h>
48 #include <linux/irq.h>
50 #include <asm/byteorder.h>
51 #include <linux/uaccess.h>
52 #include <asm/unaligned.h>
56 static DEFINE_MUTEX(idecd_ref_mutex
);
58 static void ide_cd_release(struct device
*);
60 static struct cdrom_info
*ide_cd_get(struct gendisk
*disk
)
62 struct cdrom_info
*cd
= NULL
;
64 mutex_lock(&idecd_ref_mutex
);
65 cd
= ide_drv_g(disk
, cdrom_info
);
67 if (ide_device_get(cd
->drive
))
73 mutex_unlock(&idecd_ref_mutex
);
77 static void ide_cd_put(struct cdrom_info
*cd
)
79 ide_drive_t
*drive
= cd
->drive
;
81 mutex_lock(&idecd_ref_mutex
);
83 ide_device_put(drive
);
84 mutex_unlock(&idecd_ref_mutex
);
88 * Generic packet command support and error handling routines.
91 /* Mark that we've seen a media change and invalidate our internal buffers. */
92 static void cdrom_saw_media_change(ide_drive_t
*drive
)
94 drive
->dev_flags
|= IDE_DFLAG_MEDIA_CHANGED
;
95 drive
->atapi_flags
&= ~IDE_AFLAG_TOC_VALID
;
98 static int cdrom_log_sense(ide_drive_t
*drive
, struct request
*rq
,
99 struct request_sense
*sense
)
103 ide_debug_log(IDE_DBG_SENSE
, "sense_key: 0x%x", sense
->sense_key
);
105 if (!sense
|| !rq
|| (rq
->cmd_flags
& REQ_QUIET
))
108 switch (sense
->sense_key
) {
110 case RECOVERED_ERROR
:
114 * don't care about tray state messages for e.g. capacity
115 * commands or in-progress or becoming ready
117 if (sense
->asc
== 0x3a || sense
->asc
== 0x04)
121 case ILLEGAL_REQUEST
:
123 * don't log START_STOP unit with LoEj set, since we cannot
124 * reliably check if drive can auto-close
126 if (rq
->cmd
[0] == GPCMD_START_STOP_UNIT
&& sense
->asc
== 0x24)
132 * Make good and sure we've seen this potential media change.
133 * Some drives (i.e. Creative) fail to present the correct sense
134 * key in the error register.
136 cdrom_saw_media_change(drive
);
145 static void cdrom_analyze_sense_data(ide_drive_t
*drive
,
146 struct request
*failed_command
,
147 struct request_sense
*sense
)
149 unsigned long sector
;
150 unsigned long bio_sectors
;
151 struct cdrom_info
*info
= drive
->driver_data
;
153 ide_debug_log(IDE_DBG_SENSE
, "error_code: 0x%x, sense_key: 0x%x",
154 sense
->error_code
, sense
->sense_key
);
157 ide_debug_log(IDE_DBG_SENSE
, "failed cmd: 0x%x",
158 failed_command
->cmd
[0]);
160 if (!cdrom_log_sense(drive
, failed_command
, sense
))
164 * If a read toc is executed for a CD-R or CD-RW medium where the first
165 * toc has not been recorded yet, it will fail with 05/24/00 (which is a
168 if (failed_command
&& failed_command
->cmd
[0] == GPCMD_READ_TOC_PMA_ATIP
)
169 if (sense
->sense_key
== 0x05 && sense
->asc
== 0x24)
173 if (sense
->error_code
== 0x70) {
174 switch (sense
->sense_key
) {
176 case VOLUME_OVERFLOW
:
177 case ILLEGAL_REQUEST
:
180 if (failed_command
== NULL
||
181 !blk_fs_request(failed_command
))
183 sector
= (sense
->information
[0] << 24) |
184 (sense
->information
[1] << 16) |
185 (sense
->information
[2] << 8) |
186 (sense
->information
[3]);
188 if (drive
->queue
->hardsect_size
== 2048)
189 /* device sector size is 2K */
192 bio_sectors
= max(bio_sectors(failed_command
->bio
), 4U);
193 sector
&= ~(bio_sectors
- 1);
196 * The SCSI specification allows for the value
197 * returned by READ CAPACITY to be up to 75 2K
198 * sectors past the last readable block.
199 * Therefore, if we hit a medium error within the
200 * last 75 2K sectors, we decrease the saved size
203 if (sector
< get_capacity(info
->disk
) &&
204 drive
->probed_capacity
- sector
< 4 * 75)
205 set_capacity(info
->disk
, sector
);
209 ide_cd_log_error(drive
->name
, failed_command
, sense
);
212 static void cdrom_queue_request_sense(ide_drive_t
*drive
, void *sense
,
213 struct request
*failed_command
)
215 struct cdrom_info
*info
= drive
->driver_data
;
216 struct request
*rq
= &drive
->request_sense_rq
;
218 ide_debug_log(IDE_DBG_SENSE
, "enter");
221 sense
= &info
->sense_data
;
223 /* stuff the sense request in front of our current request */
224 blk_rq_init(NULL
, rq
);
225 rq
->cmd_type
= REQ_TYPE_ATA_PC
;
226 rq
->rq_disk
= info
->disk
;
229 rq
->cmd
[0] = GPCMD_REQUEST_SENSE
;
233 rq
->cmd_type
= REQ_TYPE_SENSE
;
234 rq
->cmd_flags
|= REQ_PREEMPT
;
236 /* NOTE! Save the failed command in "rq->buffer" */
237 rq
->buffer
= (void *) failed_command
;
240 ide_debug_log(IDE_DBG_SENSE
, "failed_cmd: 0x%x",
241 failed_command
->cmd
[0]);
243 drive
->hwif
->rq
= NULL
;
245 elv_add_request(drive
->queue
, rq
, ELEVATOR_INSERT_FRONT
, 0);
248 static void cdrom_end_request(ide_drive_t
*drive
, int uptodate
)
250 struct request
*rq
= drive
->hwif
->rq
;
251 int nsectors
= rq
->hard_cur_sectors
;
253 ide_debug_log(IDE_DBG_FUNC
, "cmd: 0x%x, uptodate: 0x%x, nsectors: %d",
254 rq
->cmd
[0], uptodate
, nsectors
);
256 if (blk_sense_request(rq
) && uptodate
) {
258 * For REQ_TYPE_SENSE, "rq->buffer" points to the original
261 struct request
*failed
= (struct request
*) rq
->buffer
;
262 struct cdrom_info
*info
= drive
->driver_data
;
263 void *sense
= &info
->sense_data
;
267 sense
= failed
->sense
;
268 failed
->sense_len
= rq
->sense_len
;
270 cdrom_analyze_sense_data(drive
, failed
, sense
);
272 * now end the failed request
274 if (blk_fs_request(failed
)) {
275 if (ide_end_dequeued_request(drive
, failed
, 0,
276 failed
->hard_nr_sectors
))
279 if (blk_end_request(failed
, -EIO
,
284 cdrom_analyze_sense_data(drive
, NULL
, sense
);
287 if (!rq
->current_nr_sectors
&& blk_fs_request(rq
))
289 /* make sure it's fully ended */
290 if (blk_pc_request(rq
))
291 nsectors
= (rq
->data_len
+ 511) >> 9;
295 ide_debug_log(IDE_DBG_FUNC
, "uptodate: 0x%x, nsectors: %d",
298 ide_end_request(drive
, uptodate
, nsectors
);
301 static void ide_dump_status_no_sense(ide_drive_t
*drive
, const char *msg
, u8 st
)
305 ide_dump_status(drive
, msg
, st
);
310 * 0: if the request should be continued.
311 * 1: if the request was ended.
313 static int cdrom_decode_status(ide_drive_t
*drive
, int good_stat
, int *stat_ret
)
315 ide_hwif_t
*hwif
= drive
->hwif
;
316 struct request
*rq
= hwif
->rq
;
317 int stat
, err
, sense_key
;
319 /* check for errors */
320 stat
= hwif
->tp_ops
->read_status(hwif
);
325 if (OK_STAT(stat
, good_stat
, BAD_R_STAT
))
328 /* get the IDE error register */
329 err
= ide_read_error(drive
);
330 sense_key
= err
>> 4;
333 printk(KERN_ERR PFX
"%s: missing rq in %s\n",
334 drive
->name
, __func__
);
338 ide_debug_log(IDE_DBG_RQ
, "stat: 0x%x, good_stat: 0x%x, cmd[0]: 0x%x, "
339 "rq->cmd_type: 0x%x, err: 0x%x",
340 stat
, good_stat
, rq
->cmd
[0], rq
->cmd_type
,
343 if (blk_sense_request(rq
)) {
345 * We got an error trying to get sense info from the drive
346 * (probably while trying to recover from a former error).
349 rq
->cmd_flags
|= REQ_FAILED
;
350 cdrom_end_request(drive
, 0);
351 ide_error(drive
, "request sense failure", stat
);
354 } else if (blk_pc_request(rq
) || rq
->cmd_type
== REQ_TYPE_ATA_PC
) {
355 /* All other functions, except for READ. */
358 * if we have an error, pass back CHECK_CONDITION as the
361 if (blk_pc_request(rq
) && !rq
->errors
)
362 rq
->errors
= SAM_STAT_CHECK_CONDITION
;
364 /* check for tray open */
365 if (sense_key
== NOT_READY
) {
366 cdrom_saw_media_change(drive
);
367 } else if (sense_key
== UNIT_ATTENTION
) {
368 /* check for media change */
369 cdrom_saw_media_change(drive
);
371 } else if (sense_key
== ILLEGAL_REQUEST
&&
372 rq
->cmd
[0] == GPCMD_START_STOP_UNIT
) {
374 * Don't print error message for this condition--
375 * SFF8090i indicates that 5/24/00 is the correct
376 * response to a request to close the tray if the
377 * drive doesn't have that capability.
378 * cdrom_log_sense() knows this!
380 } else if (!(rq
->cmd_flags
& REQ_QUIET
)) {
381 /* otherwise, print an error */
382 ide_dump_status(drive
, "packet command error", stat
);
385 rq
->cmd_flags
|= REQ_FAILED
;
388 * instead of playing games with moving completions around,
389 * remove failed request completely and end it when the
390 * request sense has completed
394 } else if (blk_fs_request(rq
)) {
395 int do_end_request
= 0;
397 /* handle errors from READ and WRITE requests */
399 if (blk_noretry_request(rq
))
402 if (sense_key
== NOT_READY
) {
404 if (rq_data_dir(rq
) == READ
) {
405 cdrom_saw_media_change(drive
);
407 /* fail the request */
408 printk(KERN_ERR PFX
"%s: tray open\n",
412 struct cdrom_info
*info
= drive
->driver_data
;
415 * Allow the drive 5 seconds to recover, some
416 * devices will return this error while flushing
420 info
->write_timeout
= jiffies
+
421 ATAPI_WAIT_WRITE_BUSY
;
423 if (time_after(jiffies
, info
->write_timeout
))
426 struct request_queue
*q
= drive
->queue
;
430 * take a breather relying on the unplug
431 * timer to kick us again
433 spin_lock_irqsave(q
->queue_lock
, flags
);
435 spin_unlock_irqrestore(q
->queue_lock
, flags
);
440 } else if (sense_key
== UNIT_ATTENTION
) {
442 cdrom_saw_media_change(drive
);
445 * Arrange to retry the request but be sure to give up
446 * if we've retried too many times.
448 if (++rq
->errors
> ERROR_MAX
)
450 } else if (sense_key
== ILLEGAL_REQUEST
||
451 sense_key
== DATA_PROTECT
) {
453 * No point in retrying after an illegal request or data
456 ide_dump_status_no_sense(drive
, "command error", stat
);
458 } else if (sense_key
== MEDIUM_ERROR
) {
460 * No point in re-trying a zillion times on a bad
461 * sector. If we got here the error is not correctable.
463 ide_dump_status_no_sense(drive
,
464 "media error (bad sector)",
467 } else if (sense_key
== BLANK_CHECK
) {
468 /* disk appears blank ?? */
469 ide_dump_status_no_sense(drive
, "media error (blank)",
472 } else if ((err
& ~ATA_ABORTED
) != 0) {
473 /* go to the default handler for other errors */
474 ide_error(drive
, "cdrom_decode_status", stat
);
476 } else if ((++rq
->errors
> ERROR_MAX
)) {
477 /* we've racked up too many retries, abort */
482 * End a request through request sense analysis when we have
483 * sense data. We need this in order to perform end of media
490 * If we got a CHECK_CONDITION status, queue
491 * a request sense command.
494 cdrom_queue_request_sense(drive
, NULL
, NULL
);
496 blk_dump_rq_flags(rq
, PFX
"bad rq");
497 cdrom_end_request(drive
, 0);
500 /* retry, or handle the next request */
504 if (stat
& ATA_ERR
) {
505 struct request_queue
*q
= drive
->queue
;
508 spin_lock_irqsave(q
->queue_lock
, flags
);
509 blkdev_dequeue_request(rq
);
510 spin_unlock_irqrestore(q
->queue_lock
, flags
);
514 cdrom_queue_request_sense(drive
, rq
->sense
, rq
);
516 cdrom_end_request(drive
, 0);
522 * Check the contents of the interrupt reason register from the cdrom
523 * and attempt to recover if there are problems. Returns 0 if everything's
524 * ok; nonzero if the request has been terminated.
526 static int ide_cd_check_ireason(ide_drive_t
*drive
, struct request
*rq
,
527 int len
, int ireason
, int rw
)
529 ide_hwif_t
*hwif
= drive
->hwif
;
531 ide_debug_log(IDE_DBG_FUNC
, "ireason: 0x%x, rw: 0x%x", ireason
, rw
);
534 * ireason == 0: the drive wants to receive data from us
535 * ireason == 2: the drive is expecting to transfer data to us
537 if (ireason
== (!rw
<< 1))
539 else if (ireason
== (rw
<< 1)) {
542 printk(KERN_ERR PFX
"%s: %s: wrong transfer direction!\n",
543 drive
->name
, __func__
);
545 ide_pad_transfer(drive
, rw
, len
);
546 } else if (rw
== 0 && ireason
== 1) {
548 * Some drives (ASUS) seem to tell us that status info is
549 * available. Just get it and ignore.
551 (void)hwif
->tp_ops
->read_status(hwif
);
554 /* drive wants a command packet, or invalid ireason... */
555 printk(KERN_ERR PFX
"%s: %s: bad interrupt reason 0x%02x\n",
556 drive
->name
, __func__
, ireason
);
559 if (rq
->cmd_type
== REQ_TYPE_ATA_PC
)
560 rq
->cmd_flags
|= REQ_FAILED
;
562 cdrom_end_request(drive
, 0);
567 * Assume that the drive will always provide data in multiples of at least
568 * SECTOR_SIZE, as it gets hairy to keep track of the transfers otherwise.
570 static int ide_cd_check_transfer_size(ide_drive_t
*drive
, int len
)
572 ide_debug_log(IDE_DBG_FUNC
, "len: %d", len
);
574 if ((len
% SECTOR_SIZE
) == 0)
577 printk(KERN_ERR PFX
"%s: %s: Bad transfer size %d\n", drive
->name
,
580 if (drive
->atapi_flags
& IDE_AFLAG_LIMIT_NFRAMES
)
581 printk(KERN_ERR PFX
"This drive is not supported by this "
582 "version of the driver\n");
584 printk(KERN_ERR PFX
"Trying to limit transfer sizes\n");
585 drive
->atapi_flags
|= IDE_AFLAG_LIMIT_NFRAMES
;
591 static ide_startstop_t
ide_cd_prepare_rw_request(ide_drive_t
*drive
,
594 ide_debug_log(IDE_DBG_RQ
, "rq->cmd_flags: 0x%x", rq
->cmd_flags
);
596 if (rq_data_dir(rq
) == READ
) {
597 unsigned short sectors_per_frame
=
598 queue_hardsect_size(drive
->queue
) >> SECTOR_BITS
;
599 int nskip
= rq
->sector
& (sectors_per_frame
- 1);
602 * If the requested sector doesn't start on a frame boundary,
603 * we must adjust the start of the transfer so that it does,
604 * and remember to skip the first few sectors.
606 * If the rq->current_nr_sectors field is larger than the size
607 * of the buffer, it will mean that we're to skip a number of
608 * sectors equal to the amount by which rq->current_nr_sectors
609 * is larger than the buffer size.
612 /* sanity check... */
613 if (rq
->current_nr_sectors
!=
614 bio_cur_sectors(rq
->bio
)) {
615 printk(KERN_ERR PFX
"%s: %s: buffer botch (%u)\n",
616 drive
->name
, __func__
,
617 rq
->current_nr_sectors
);
618 cdrom_end_request(drive
, 0);
621 rq
->current_nr_sectors
+= nskip
;
625 /* set up the command */
626 rq
->timeout
= ATAPI_WAIT_PC
;
632 * Fix up a possibly partially-processed request so that we can start it over
633 * entirely, or even put it back on the request queue.
635 static void ide_cd_restore_request(ide_drive_t
*drive
, struct request
*rq
)
638 ide_debug_log(IDE_DBG_FUNC
, "enter");
640 if (rq
->buffer
!= bio_data(rq
->bio
)) {
642 (rq
->buffer
- (char *)bio_data(rq
->bio
)) / SECTOR_SIZE
;
644 rq
->buffer
= bio_data(rq
->bio
);
648 rq
->current_nr_sectors
= bio_cur_sectors(rq
->bio
);
649 rq
->hard_cur_sectors
= rq
->current_nr_sectors
;
650 rq
->hard_nr_sectors
= rq
->nr_sectors
;
651 rq
->hard_sector
= rq
->sector
;
652 rq
->q
->prep_rq_fn(rq
->q
, rq
);
655 static void ide_cd_request_sense_fixup(ide_drive_t
*drive
, struct request
*rq
)
657 ide_debug_log(IDE_DBG_FUNC
, "rq->cmd[0]: 0x%x", rq
->cmd
[0]);
660 * Some of the trailing request sense fields are optional,
661 * and some drives don't send them. Sigh.
663 if (rq
->cmd
[0] == GPCMD_REQUEST_SENSE
&&
664 rq
->data_len
> 0 && rq
->data_len
<= 5)
665 while (rq
->data_len
> 0) {
666 *(u8
*)rq
->data
++ = 0;
671 int ide_cd_queue_pc(ide_drive_t
*drive
, const unsigned char *cmd
,
672 int write
, void *buffer
, unsigned *bufflen
,
673 struct request_sense
*sense
, int timeout
,
674 unsigned int cmd_flags
)
676 struct cdrom_info
*info
= drive
->driver_data
;
677 struct request_sense local_sense
;
679 unsigned int flags
= 0;
682 sense
= &local_sense
;
684 ide_debug_log(IDE_DBG_PC
, "cmd[0]: 0x%x, write: 0x%x, timeout: %d, "
686 cmd
[0], write
, timeout
, cmd_flags
);
688 /* start of retry loop */
693 rq
= blk_get_request(drive
->queue
, write
, __GFP_WAIT
);
695 memcpy(rq
->cmd
, cmd
, BLK_MAX_CDB
);
696 rq
->cmd_type
= REQ_TYPE_ATA_PC
;
698 rq
->cmd_flags
|= cmd_flags
;
699 rq
->timeout
= timeout
;
702 rq
->data_len
= *bufflen
;
705 error
= blk_execute_rq(drive
->queue
, info
->disk
, rq
, 0);
708 *bufflen
= rq
->data_len
;
710 flags
= rq
->cmd_flags
;
714 * FIXME: we should probably abort/retry or something in case of
717 if (flags
& REQ_FAILED
) {
719 * The request failed. Retry if it was due to a unit
720 * attention status (usually means media was changed).
722 struct request_sense
*reqbuf
= sense
;
724 if (reqbuf
->sense_key
== UNIT_ATTENTION
)
725 cdrom_saw_media_change(drive
);
726 else if (reqbuf
->sense_key
== NOT_READY
&&
727 reqbuf
->asc
== 4 && reqbuf
->ascq
!= 4) {
729 * The drive is in the process of loading
730 * a disk. Retry, but wait a little to give
731 * the drive time to complete the load.
735 /* otherwise, don't retry */
741 /* end of retry loop */
742 } while ((flags
& REQ_FAILED
) && retries
>= 0);
744 /* return an error if the command failed */
745 return (flags
& REQ_FAILED
) ? -EIO
: 0;
749 * Called from blk_end_request_callback() after the data of the request is
750 * completed and before the request itself is completed. By returning value '1',
751 * blk_end_request_callback() returns immediately without completing it.
753 static int cdrom_newpc_intr_dummy_cb(struct request
*rq
)
758 static ide_startstop_t
cdrom_newpc_intr(ide_drive_t
*drive
)
760 ide_hwif_t
*hwif
= drive
->hwif
;
761 struct request
*rq
= hwif
->rq
;
762 xfer_func_t
*xferfunc
;
763 ide_expiry_t
*expiry
= NULL
;
764 int dma_error
= 0, dma
, stat
, thislen
, uptodate
= 0;
765 int write
= (rq_data_dir(rq
) == WRITE
) ? 1 : 0;
766 unsigned int timeout
;
770 ide_debug_log(IDE_DBG_PC
, "cmd[0]: 0x%x, write: 0x%x",
773 /* check for errors */
777 dma_error
= hwif
->dma_ops
->dma_end(drive
);
779 printk(KERN_ERR PFX
"%s: DMA %s error\n", drive
->name
,
780 write
? "write" : "read");
785 if (cdrom_decode_status(drive
, 0, &stat
))
788 /* using dma, transfer is complete now */
791 return ide_error(drive
, "dma error", stat
);
792 if (blk_fs_request(rq
)) {
793 ide_end_request(drive
, 1, rq
->nr_sectors
);
795 } else if (rq
->cmd_type
== REQ_TYPE_ATA_PC
&& !rq
->bio
) {
796 ide_end_request(drive
, 1, 1);
802 ide_read_bcount_and_ireason(drive
, &len
, &ireason
);
804 thislen
= blk_fs_request(rq
) ? len
: rq
->data_len
;
808 ide_debug_log(IDE_DBG_PC
, "DRQ: stat: 0x%x, thislen: %d",
811 /* If DRQ is clear, the command has completed. */
812 if ((stat
& ATA_DRQ
) == 0) {
813 if (blk_fs_request(rq
)) {
815 * If we're not done reading/writing, complain.
816 * Otherwise, complete the command normally.
819 if (rq
->current_nr_sectors
> 0) {
820 printk(KERN_ERR PFX
"%s: %s: data underrun "
822 drive
->name
, __func__
,
823 rq
->current_nr_sectors
);
825 rq
->cmd_flags
|= REQ_FAILED
;
828 cdrom_end_request(drive
, uptodate
);
830 } else if (!blk_pc_request(rq
)) {
831 ide_cd_request_sense_fixup(drive
, rq
);
832 /* complain if we still have data left to transfer */
833 uptodate
= rq
->data_len
? 0 : 1;
838 /* check which way to transfer data */
839 if (ide_cd_check_ireason(drive
, rq
, len
, ireason
, write
))
842 if (blk_fs_request(rq
)) {
846 if (ide_cd_check_transfer_size(drive
, len
)) {
847 cdrom_end_request(drive
, 0);
852 * First, figure out if we need to bit-bucket
853 * any of the leading sectors.
855 nskip
= min_t(int, rq
->current_nr_sectors
856 - bio_cur_sectors(rq
->bio
),
859 ide_pad_transfer(drive
, write
, nskip
<< 9);
860 rq
->current_nr_sectors
-= nskip
;
861 thislen
-= (nskip
<< 9);
868 xferfunc
= hwif
->tp_ops
->output_data
;
871 xferfunc
= hwif
->tp_ops
->input_data
;
874 ide_debug_log(IDE_DBG_PC
, "data transfer, rq->cmd_type: 0x%x, "
876 rq
->cmd_type
, ireason
);
879 while (thislen
> 0) {
880 u8
*ptr
= blk_fs_request(rq
) ? NULL
: rq
->data
;
881 int blen
= rq
->data_len
;
885 if (blk_fs_request(rq
)) {
887 blen
= rq
->current_nr_sectors
<< 9;
889 ptr
= bio_data(rq
->bio
);
890 blen
= bio_iovec(rq
->bio
)->bv_len
;
895 if (blk_fs_request(rq
) && !write
)
897 * If the buffers are full, pipe the rest into
900 ide_pad_transfer(drive
, 0, thislen
);
902 printk(KERN_ERR PFX
"%s: confused, missing data\n",
904 blk_dump_rq_flags(rq
, rq_data_dir(rq
)
905 ? "cdrom_newpc_intr, write"
906 : "cdrom_newpc_intr, read");
914 xferfunc(drive
, NULL
, ptr
, blen
);
919 if (blk_fs_request(rq
)) {
921 rq
->nr_sectors
-= (blen
>> 9);
922 rq
->current_nr_sectors
-= (blen
>> 9);
923 rq
->sector
+= (blen
>> 9);
925 if (rq
->current_nr_sectors
== 0 && rq
->nr_sectors
)
926 cdrom_end_request(drive
, 1);
928 rq
->data_len
-= blen
;
931 * The request can't be completed until DRQ is cleared.
932 * So complete the data, but don't complete the request
933 * using the dummy function for the callback feature
934 * of blk_end_request_callback().
937 blk_end_request_callback(rq
, 0, blen
,
938 cdrom_newpc_intr_dummy_cb
);
942 if (!write
&& blk_sense_request(rq
))
943 rq
->sense_len
+= blen
;
946 /* pad, if necessary */
947 if (!blk_fs_request(rq
) && len
> 0)
948 ide_pad_transfer(drive
, write
, len
);
950 if (blk_pc_request(rq
)) {
951 timeout
= rq
->timeout
;
953 timeout
= ATAPI_WAIT_PC
;
954 if (!blk_fs_request(rq
))
955 expiry
= ide_cd_expiry
;
958 ide_set_handler(drive
, cdrom_newpc_intr
, timeout
, expiry
);
962 if (blk_pc_request(rq
)) {
963 unsigned int dlen
= rq
->data_len
;
968 if (blk_end_request(rq
, 0, dlen
))
974 rq
->cmd_flags
|= REQ_FAILED
;
975 cdrom_end_request(drive
, uptodate
);
980 static ide_startstop_t
cdrom_start_rw(ide_drive_t
*drive
, struct request
*rq
)
982 struct cdrom_info
*cd
= drive
->driver_data
;
983 int write
= rq_data_dir(rq
) == WRITE
;
984 unsigned short sectors_per_frame
=
985 queue_hardsect_size(drive
->queue
) >> SECTOR_BITS
;
987 ide_debug_log(IDE_DBG_RQ
, "rq->cmd[0]: 0x%x, write: 0x%x, "
988 "secs_per_frame: %u",
989 rq
->cmd
[0], write
, sectors_per_frame
);
992 /* disk has become write protected */
993 if (get_disk_ro(cd
->disk
)) {
994 cdrom_end_request(drive
, 0);
999 * We may be retrying this request after an error. Fix up any
1000 * weirdness which might be present in the request packet.
1002 ide_cd_restore_request(drive
, rq
);
1005 /* use DMA, if possible / writes *must* be hardware frame aligned */
1006 if ((rq
->nr_sectors
& (sectors_per_frame
- 1)) ||
1007 (rq
->sector
& (sectors_per_frame
- 1))) {
1009 cdrom_end_request(drive
, 0);
1014 drive
->dma
= !!(drive
->dev_flags
& IDE_DFLAG_USING_DMA
);
1017 cd
->devinfo
.media_written
= 1;
1022 static void cdrom_do_block_pc(ide_drive_t
*drive
, struct request
*rq
)
1025 ide_debug_log(IDE_DBG_PC
, "rq->cmd[0]: 0x%x, rq->cmd_type: 0x%x",
1026 rq
->cmd
[0], rq
->cmd_type
);
1028 if (blk_pc_request(rq
))
1029 rq
->cmd_flags
|= REQ_QUIET
;
1031 rq
->cmd_flags
&= ~REQ_FAILED
;
1036 if (rq
->bio
|| ((rq
->cmd_type
== REQ_TYPE_ATA_PC
) && rq
->data_len
)) {
1037 struct request_queue
*q
= drive
->queue
;
1038 unsigned int alignment
;
1042 buf
= bio_data(rq
->bio
);
1046 drive
->dma
= !!(drive
->dev_flags
& IDE_DFLAG_USING_DMA
);
1049 * check if dma is safe
1051 * NOTE! The "len" and "addr" checks should possibly have
1054 alignment
= queue_dma_alignment(q
) | q
->dma_pad_mask
;
1055 if ((unsigned long)buf
& alignment
1056 || rq
->data_len
& q
->dma_pad_mask
1057 || object_is_on_stack(buf
))
1062 static ide_startstop_t
ide_cd_do_request(ide_drive_t
*drive
, struct request
*rq
,
1065 ide_debug_log(IDE_DBG_RQ
, "cmd: 0x%x, block: %llu",
1066 rq
->cmd
[0], (unsigned long long)block
);
1068 if (drive
->debug_mask
& IDE_DBG_RQ
)
1069 blk_dump_rq_flags(rq
, "ide_cd_do_request");
1071 if (blk_fs_request(rq
)) {
1072 if (cdrom_start_rw(drive
, rq
) == ide_stopped
)
1075 if (ide_cd_prepare_rw_request(drive
, rq
) == ide_stopped
)
1077 } else if (blk_sense_request(rq
) || blk_pc_request(rq
) ||
1078 rq
->cmd_type
== REQ_TYPE_ATA_PC
) {
1080 rq
->timeout
= ATAPI_WAIT_PC
;
1082 cdrom_do_block_pc(drive
, rq
);
1083 } else if (blk_special_request(rq
)) {
1084 /* right now this can only be a reset... */
1085 cdrom_end_request(drive
, 1);
1088 blk_dump_rq_flags(rq
, DRV_NAME
" bad flags");
1089 cdrom_end_request(drive
, 0);
1093 return ide_issue_pc(drive
);
1099 * Routines which queue packet commands take as a final argument a pointer to a
1100 * request_sense struct. If execution of the command results in an error with a
1101 * CHECK CONDITION status, this structure will be filled with the results of the
1102 * subsequent request sense command. The pointer can also be NULL, in which case
1103 * no sense information is returned.
1105 static void msf_from_bcd(struct atapi_msf
*msf
)
1107 msf
->minute
= bcd2bin(msf
->minute
);
1108 msf
->second
= bcd2bin(msf
->second
);
1109 msf
->frame
= bcd2bin(msf
->frame
);
1112 int cdrom_check_status(ide_drive_t
*drive
, struct request_sense
*sense
)
1114 struct cdrom_info
*info
= drive
->driver_data
;
1115 struct cdrom_device_info
*cdi
= &info
->devinfo
;
1116 unsigned char cmd
[BLK_MAX_CDB
];
1118 ide_debug_log(IDE_DBG_FUNC
, "enter");
1120 memset(cmd
, 0, BLK_MAX_CDB
);
1121 cmd
[0] = GPCMD_TEST_UNIT_READY
;
1124 * Sanyo 3 CD changer uses byte 7 of TEST_UNIT_READY to switch CDs
1125 * instead of supporting the LOAD_UNLOAD opcode.
1127 cmd
[7] = cdi
->sanyo_slot
% 3;
1129 return ide_cd_queue_pc(drive
, cmd
, 0, NULL
, NULL
, sense
, 0, REQ_QUIET
);
1132 static int cdrom_read_capacity(ide_drive_t
*drive
, unsigned long *capacity
,
1133 unsigned long *sectors_per_frame
,
1134 struct request_sense
*sense
)
1142 unsigned char cmd
[BLK_MAX_CDB
];
1143 unsigned len
= sizeof(capbuf
);
1146 ide_debug_log(IDE_DBG_FUNC
, "enter");
1148 memset(cmd
, 0, BLK_MAX_CDB
);
1149 cmd
[0] = GPCMD_READ_CDVD_CAPACITY
;
1151 stat
= ide_cd_queue_pc(drive
, cmd
, 0, &capbuf
, &len
, sense
, 0,
1157 * Sanity check the given block size
1159 blocklen
= be32_to_cpu(capbuf
.blocklen
);
1167 printk(KERN_ERR PFX
"%s: weird block size %u\n",
1168 drive
->name
, blocklen
);
1169 printk(KERN_ERR PFX
"%s: default to 2kb block size\n",
1175 *capacity
= 1 + be32_to_cpu(capbuf
.lba
);
1176 *sectors_per_frame
= blocklen
>> SECTOR_BITS
;
1178 ide_debug_log(IDE_DBG_PROBE
, "cap: %lu, sectors_per_frame: %lu",
1179 *capacity
, *sectors_per_frame
);
1184 static int cdrom_read_tocentry(ide_drive_t
*drive
, int trackno
, int msf_flag
,
1185 int format
, char *buf
, int buflen
,
1186 struct request_sense
*sense
)
1188 unsigned char cmd
[BLK_MAX_CDB
];
1190 ide_debug_log(IDE_DBG_FUNC
, "enter");
1192 memset(cmd
, 0, BLK_MAX_CDB
);
1194 cmd
[0] = GPCMD_READ_TOC_PMA_ATIP
;
1196 cmd
[7] = (buflen
>> 8);
1197 cmd
[8] = (buflen
& 0xff);
1198 cmd
[9] = (format
<< 6);
1203 return ide_cd_queue_pc(drive
, cmd
, 0, buf
, &buflen
, sense
, 0, REQ_QUIET
);
1206 /* Try to read the entire TOC for the disk into our internal buffer. */
1207 int ide_cd_read_toc(ide_drive_t
*drive
, struct request_sense
*sense
)
1209 int stat
, ntracks
, i
;
1210 struct cdrom_info
*info
= drive
->driver_data
;
1211 struct cdrom_device_info
*cdi
= &info
->devinfo
;
1212 struct atapi_toc
*toc
= info
->toc
;
1214 struct atapi_toc_header hdr
;
1215 struct atapi_toc_entry ent
;
1218 unsigned long sectors_per_frame
= SECTORS_PER_FRAME
;
1220 ide_debug_log(IDE_DBG_FUNC
, "enter");
1223 /* try to allocate space */
1224 toc
= kmalloc(sizeof(struct atapi_toc
), GFP_KERNEL
);
1226 printk(KERN_ERR PFX
"%s: No cdrom TOC buffer!\n",
1234 * Check to see if the existing data is still valid. If it is,
1237 (void) cdrom_check_status(drive
, sense
);
1239 if (drive
->atapi_flags
& IDE_AFLAG_TOC_VALID
)
1242 /* try to get the total cdrom capacity and sector size */
1243 stat
= cdrom_read_capacity(drive
, &toc
->capacity
, §ors_per_frame
,
1246 toc
->capacity
= 0x1fffff;
1248 set_capacity(info
->disk
, toc
->capacity
* sectors_per_frame
);
1249 /* save a private copy of the TOC capacity for error handling */
1250 drive
->probed_capacity
= toc
->capacity
* sectors_per_frame
;
1252 blk_queue_hardsect_size(drive
->queue
,
1253 sectors_per_frame
<< SECTOR_BITS
);
1255 /* first read just the header, so we know how long the TOC is */
1256 stat
= cdrom_read_tocentry(drive
, 0, 1, 0, (char *) &toc
->hdr
,
1257 sizeof(struct atapi_toc_header
), sense
);
1261 if (drive
->atapi_flags
& IDE_AFLAG_TOCTRACKS_AS_BCD
) {
1262 toc
->hdr
.first_track
= bcd2bin(toc
->hdr
.first_track
);
1263 toc
->hdr
.last_track
= bcd2bin(toc
->hdr
.last_track
);
1266 ntracks
= toc
->hdr
.last_track
- toc
->hdr
.first_track
+ 1;
1269 if (ntracks
> MAX_TRACKS
)
1270 ntracks
= MAX_TRACKS
;
1272 /* now read the whole schmeer */
1273 stat
= cdrom_read_tocentry(drive
, toc
->hdr
.first_track
, 1, 0,
1275 sizeof(struct atapi_toc_header
) +
1277 sizeof(struct atapi_toc_entry
), sense
);
1279 if (stat
&& toc
->hdr
.first_track
> 1) {
1281 * Cds with CDI tracks only don't have any TOC entries, despite
1282 * of this the returned values are
1283 * first_track == last_track = number of CDI tracks + 1,
1284 * so that this case is indistinguishable from the same layout
1285 * plus an additional audio track. If we get an error for the
1286 * regular case, we assume a CDI without additional audio
1287 * tracks. In this case the readable TOC is empty (CDI tracks
1288 * are not included) and only holds the Leadout entry.
1293 stat
= cdrom_read_tocentry(drive
, CDROM_LEADOUT
, 1, 0,
1295 sizeof(struct atapi_toc_header
) +
1297 sizeof(struct atapi_toc_entry
),
1302 if (drive
->atapi_flags
& IDE_AFLAG_TOCTRACKS_AS_BCD
) {
1303 toc
->hdr
.first_track
= (u8
)bin2bcd(CDROM_LEADOUT
);
1304 toc
->hdr
.last_track
= (u8
)bin2bcd(CDROM_LEADOUT
);
1306 toc
->hdr
.first_track
= CDROM_LEADOUT
;
1307 toc
->hdr
.last_track
= CDROM_LEADOUT
;
1314 toc
->hdr
.toc_length
= be16_to_cpu(toc
->hdr
.toc_length
);
1316 if (drive
->atapi_flags
& IDE_AFLAG_TOCTRACKS_AS_BCD
) {
1317 toc
->hdr
.first_track
= bcd2bin(toc
->hdr
.first_track
);
1318 toc
->hdr
.last_track
= bcd2bin(toc
->hdr
.last_track
);
1321 for (i
= 0; i
<= ntracks
; i
++) {
1322 if (drive
->atapi_flags
& IDE_AFLAG_TOCADDR_AS_BCD
) {
1323 if (drive
->atapi_flags
& IDE_AFLAG_TOCTRACKS_AS_BCD
)
1324 toc
->ent
[i
].track
= bcd2bin(toc
->ent
[i
].track
);
1325 msf_from_bcd(&toc
->ent
[i
].addr
.msf
);
1327 toc
->ent
[i
].addr
.lba
= msf_to_lba(toc
->ent
[i
].addr
.msf
.minute
,
1328 toc
->ent
[i
].addr
.msf
.second
,
1329 toc
->ent
[i
].addr
.msf
.frame
);
1332 if (toc
->hdr
.first_track
!= CDROM_LEADOUT
) {
1333 /* read the multisession information */
1334 stat
= cdrom_read_tocentry(drive
, 0, 0, 1, (char *)&ms_tmp
,
1335 sizeof(ms_tmp
), sense
);
1339 toc
->last_session_lba
= be32_to_cpu(ms_tmp
.ent
.addr
.lba
);
1341 ms_tmp
.hdr
.last_track
= CDROM_LEADOUT
;
1342 ms_tmp
.hdr
.first_track
= ms_tmp
.hdr
.last_track
;
1343 toc
->last_session_lba
= msf_to_lba(0, 2, 0); /* 0m 2s 0f */
1346 if (drive
->atapi_flags
& IDE_AFLAG_TOCADDR_AS_BCD
) {
1347 /* re-read multisession information using MSF format */
1348 stat
= cdrom_read_tocentry(drive
, 0, 1, 1, (char *)&ms_tmp
,
1349 sizeof(ms_tmp
), sense
);
1353 msf_from_bcd(&ms_tmp
.ent
.addr
.msf
);
1354 toc
->last_session_lba
= msf_to_lba(ms_tmp
.ent
.addr
.msf
.minute
,
1355 ms_tmp
.ent
.addr
.msf
.second
,
1356 ms_tmp
.ent
.addr
.msf
.frame
);
1359 toc
->xa_flag
= (ms_tmp
.hdr
.first_track
!= ms_tmp
.hdr
.last_track
);
1361 /* now try to get the total cdrom capacity */
1362 stat
= cdrom_get_last_written(cdi
, &last_written
);
1363 if (!stat
&& (last_written
> toc
->capacity
)) {
1364 toc
->capacity
= last_written
;
1365 set_capacity(info
->disk
, toc
->capacity
* sectors_per_frame
);
1366 drive
->probed_capacity
= toc
->capacity
* sectors_per_frame
;
1369 /* Remember that we've read this stuff. */
1370 drive
->atapi_flags
|= IDE_AFLAG_TOC_VALID
;
1375 int ide_cdrom_get_capabilities(ide_drive_t
*drive
, u8
*buf
)
1377 struct cdrom_info
*info
= drive
->driver_data
;
1378 struct cdrom_device_info
*cdi
= &info
->devinfo
;
1379 struct packet_command cgc
;
1380 int stat
, attempts
= 3, size
= ATAPI_CAPABILITIES_PAGE_SIZE
;
1382 ide_debug_log(IDE_DBG_FUNC
, "enter");
1384 if ((drive
->atapi_flags
& IDE_AFLAG_FULL_CAPS_PAGE
) == 0)
1385 size
-= ATAPI_CAPABILITIES_PAGE_PAD_SIZE
;
1387 init_cdrom_command(&cgc
, buf
, size
, CGC_DATA_UNKNOWN
);
1389 /* we seem to get stat=0x01,err=0x00 the first time (??) */
1390 stat
= cdrom_mode_sense(cdi
, &cgc
, GPMODE_CAPABILITIES_PAGE
, 0);
1393 } while (--attempts
);
1397 void ide_cdrom_update_speed(ide_drive_t
*drive
, u8
*buf
)
1399 struct cdrom_info
*cd
= drive
->driver_data
;
1400 u16 curspeed
, maxspeed
;
1402 ide_debug_log(IDE_DBG_FUNC
, "enter");
1404 if (drive
->atapi_flags
& IDE_AFLAG_LE_SPEED_FIELDS
) {
1405 curspeed
= le16_to_cpup((__le16
*)&buf
[8 + 14]);
1406 maxspeed
= le16_to_cpup((__le16
*)&buf
[8 + 8]);
1408 curspeed
= be16_to_cpup((__be16
*)&buf
[8 + 14]);
1409 maxspeed
= be16_to_cpup((__be16
*)&buf
[8 + 8]);
1412 ide_debug_log(IDE_DBG_PROBE
, "curspeed: %u, maxspeed: %u",
1413 curspeed
, maxspeed
);
1415 cd
->current_speed
= (curspeed
+ (176/2)) / 176;
1416 cd
->max_speed
= (maxspeed
+ (176/2)) / 176;
1419 #define IDE_CD_CAPABILITIES \
1420 (CDC_CLOSE_TRAY | CDC_OPEN_TRAY | CDC_LOCK | CDC_SELECT_SPEED | \
1421 CDC_SELECT_DISC | CDC_MULTI_SESSION | CDC_MCN | CDC_MEDIA_CHANGED | \
1422 CDC_PLAY_AUDIO | CDC_RESET | CDC_DRIVE_STATUS | CDC_CD_R | \
1423 CDC_CD_RW | CDC_DVD | CDC_DVD_R | CDC_DVD_RAM | CDC_GENERIC_PACKET | \
1424 CDC_MO_DRIVE | CDC_MRW | CDC_MRW_W | CDC_RAM)
1426 static struct cdrom_device_ops ide_cdrom_dops
= {
1427 .open
= ide_cdrom_open_real
,
1428 .release
= ide_cdrom_release_real
,
1429 .drive_status
= ide_cdrom_drive_status
,
1430 .media_changed
= ide_cdrom_check_media_change_real
,
1431 .tray_move
= ide_cdrom_tray_move
,
1432 .lock_door
= ide_cdrom_lock_door
,
1433 .select_speed
= ide_cdrom_select_speed
,
1434 .get_last_session
= ide_cdrom_get_last_session
,
1435 .get_mcn
= ide_cdrom_get_mcn
,
1436 .reset
= ide_cdrom_reset
,
1437 .audio_ioctl
= ide_cdrom_audio_ioctl
,
1438 .capability
= IDE_CD_CAPABILITIES
,
1439 .generic_packet
= ide_cdrom_packet
,
1442 static int ide_cdrom_register(ide_drive_t
*drive
, int nslots
)
1444 struct cdrom_info
*info
= drive
->driver_data
;
1445 struct cdrom_device_info
*devinfo
= &info
->devinfo
;
1447 ide_debug_log(IDE_DBG_PROBE
, "nslots: %d", nslots
);
1449 devinfo
->ops
= &ide_cdrom_dops
;
1450 devinfo
->speed
= info
->current_speed
;
1451 devinfo
->capacity
= nslots
;
1452 devinfo
->handle
= drive
;
1453 strcpy(devinfo
->name
, drive
->name
);
1455 if (drive
->atapi_flags
& IDE_AFLAG_NO_SPEED_SELECT
)
1456 devinfo
->mask
|= CDC_SELECT_SPEED
;
1458 devinfo
->disk
= info
->disk
;
1459 return register_cdrom(devinfo
);
1462 static int ide_cdrom_probe_capabilities(ide_drive_t
*drive
)
1464 struct cdrom_info
*cd
= drive
->driver_data
;
1465 struct cdrom_device_info
*cdi
= &cd
->devinfo
;
1466 u8 buf
[ATAPI_CAPABILITIES_PAGE_SIZE
];
1467 mechtype_t mechtype
;
1470 ide_debug_log(IDE_DBG_PROBE
, "media: 0x%x, atapi_flags: 0x%lx",
1471 drive
->media
, drive
->atapi_flags
);
1473 cdi
->mask
= (CDC_CD_R
| CDC_CD_RW
| CDC_DVD
| CDC_DVD_R
|
1474 CDC_DVD_RAM
| CDC_SELECT_DISC
| CDC_PLAY_AUDIO
|
1475 CDC_MO_DRIVE
| CDC_RAM
);
1477 if (drive
->media
== ide_optical
) {
1478 cdi
->mask
&= ~(CDC_MO_DRIVE
| CDC_RAM
);
1479 printk(KERN_ERR PFX
"%s: ATAPI magneto-optical drive\n",
1484 if (drive
->atapi_flags
& IDE_AFLAG_PRE_ATAPI12
) {
1485 drive
->atapi_flags
&= ~IDE_AFLAG_NO_EJECT
;
1486 cdi
->mask
&= ~CDC_PLAY_AUDIO
;
1491 * We have to cheat a little here. the packet will eventually be queued
1492 * with ide_cdrom_packet(), which extracts the drive from cdi->handle.
1493 * Since this device hasn't been registered with the Uniform layer yet,
1494 * it can't do this. Same goes for cdi->ops.
1496 cdi
->handle
= drive
;
1497 cdi
->ops
= &ide_cdrom_dops
;
1499 if (ide_cdrom_get_capabilities(drive
, buf
))
1502 if ((buf
[8 + 6] & 0x01) == 0)
1503 drive
->dev_flags
&= ~IDE_DFLAG_DOORLOCKING
;
1504 if (buf
[8 + 6] & 0x08)
1505 drive
->atapi_flags
&= ~IDE_AFLAG_NO_EJECT
;
1506 if (buf
[8 + 3] & 0x01)
1507 cdi
->mask
&= ~CDC_CD_R
;
1508 if (buf
[8 + 3] & 0x02)
1509 cdi
->mask
&= ~(CDC_CD_RW
| CDC_RAM
);
1510 if (buf
[8 + 2] & 0x38)
1511 cdi
->mask
&= ~CDC_DVD
;
1512 if (buf
[8 + 3] & 0x20)
1513 cdi
->mask
&= ~(CDC_DVD_RAM
| CDC_RAM
);
1514 if (buf
[8 + 3] & 0x10)
1515 cdi
->mask
&= ~CDC_DVD_R
;
1516 if ((buf
[8 + 4] & 0x01) || (drive
->atapi_flags
& IDE_AFLAG_PLAY_AUDIO_OK
))
1517 cdi
->mask
&= ~CDC_PLAY_AUDIO
;
1519 mechtype
= buf
[8 + 6] >> 5;
1520 if (mechtype
== mechtype_caddy
||
1521 mechtype
== mechtype_popup
||
1522 (drive
->atapi_flags
& IDE_AFLAG_NO_AUTOCLOSE
))
1523 cdi
->mask
|= CDC_CLOSE_TRAY
;
1525 if (cdi
->sanyo_slot
> 0) {
1526 cdi
->mask
&= ~CDC_SELECT_DISC
;
1528 } else if (mechtype
== mechtype_individual_changer
||
1529 mechtype
== mechtype_cartridge_changer
) {
1530 nslots
= cdrom_number_of_slots(cdi
);
1532 cdi
->mask
&= ~CDC_SELECT_DISC
;
1535 ide_cdrom_update_speed(drive
, buf
);
1537 printk(KERN_INFO PFX
"%s: ATAPI", drive
->name
);
1539 /* don't print speed if the drive reported 0 */
1541 printk(KERN_CONT
" %dX", cd
->max_speed
);
1543 printk(KERN_CONT
" %s", (cdi
->mask
& CDC_DVD
) ? "CD-ROM" : "DVD-ROM");
1545 if ((cdi
->mask
& CDC_DVD_R
) == 0 || (cdi
->mask
& CDC_DVD_RAM
) == 0)
1546 printk(KERN_CONT
" DVD%s%s",
1547 (cdi
->mask
& CDC_DVD_R
) ? "" : "-R",
1548 (cdi
->mask
& CDC_DVD_RAM
) ? "" : "/RAM");
1550 if ((cdi
->mask
& CDC_CD_R
) == 0 || (cdi
->mask
& CDC_CD_RW
) == 0)
1551 printk(KERN_CONT
" CD%s%s",
1552 (cdi
->mask
& CDC_CD_R
) ? "" : "-R",
1553 (cdi
->mask
& CDC_CD_RW
) ? "" : "/RW");
1555 if ((cdi
->mask
& CDC_SELECT_DISC
) == 0)
1556 printk(KERN_CONT
" changer w/%d slots", nslots
);
1558 printk(KERN_CONT
" drive");
1560 printk(KERN_CONT
", %dkB Cache\n",
1561 be16_to_cpup((__be16
*)&buf
[8 + 12]));
1566 /* standard prep_rq_fn that builds 10 byte cmds */
1567 static int ide_cdrom_prep_fs(struct request_queue
*q
, struct request
*rq
)
1569 int hard_sect
= queue_hardsect_size(q
);
1570 long block
= (long)rq
->hard_sector
/ (hard_sect
>> 9);
1571 unsigned long blocks
= rq
->hard_nr_sectors
/ (hard_sect
>> 9);
1573 memset(rq
->cmd
, 0, BLK_MAX_CDB
);
1575 if (rq_data_dir(rq
) == READ
)
1576 rq
->cmd
[0] = GPCMD_READ_10
;
1578 rq
->cmd
[0] = GPCMD_WRITE_10
;
1583 rq
->cmd
[2] = (block
>> 24) & 0xff;
1584 rq
->cmd
[3] = (block
>> 16) & 0xff;
1585 rq
->cmd
[4] = (block
>> 8) & 0xff;
1586 rq
->cmd
[5] = block
& 0xff;
1589 * and transfer length
1591 rq
->cmd
[7] = (blocks
>> 8) & 0xff;
1592 rq
->cmd
[8] = blocks
& 0xff;
1598 * Most of the SCSI commands are supported directly by ATAPI devices.
1599 * This transform handles the few exceptions.
1601 static int ide_cdrom_prep_pc(struct request
*rq
)
1605 /* transform 6-byte read/write commands to the 10-byte version */
1606 if (c
[0] == READ_6
|| c
[0] == WRITE_6
) {
1613 c
[0] += (READ_10
- READ_6
);
1619 * it's silly to pretend we understand 6-byte sense commands, just
1620 * reject with ILLEGAL_REQUEST and the caller should take the
1621 * appropriate action
1623 if (c
[0] == MODE_SENSE
|| c
[0] == MODE_SELECT
) {
1624 rq
->errors
= ILLEGAL_REQUEST
;
1625 return BLKPREP_KILL
;
1631 static int ide_cdrom_prep_fn(struct request_queue
*q
, struct request
*rq
)
1633 if (blk_fs_request(rq
))
1634 return ide_cdrom_prep_fs(q
, rq
);
1635 else if (blk_pc_request(rq
))
1636 return ide_cdrom_prep_pc(rq
);
1641 struct cd_list_entry
{
1642 const char *id_model
;
1643 const char *id_firmware
;
1644 unsigned int cd_flags
;
1647 #ifdef CONFIG_IDE_PROC_FS
1648 static sector_t
ide_cdrom_capacity(ide_drive_t
*drive
)
1650 unsigned long capacity
, sectors_per_frame
;
1652 if (cdrom_read_capacity(drive
, &capacity
, §ors_per_frame
, NULL
))
1655 return capacity
* sectors_per_frame
;
1658 static int proc_idecd_read_capacity(char *page
, char **start
, off_t off
,
1659 int count
, int *eof
, void *data
)
1661 ide_drive_t
*drive
= data
;
1664 len
= sprintf(page
, "%llu\n", (long long)ide_cdrom_capacity(drive
));
1665 PROC_IDE_READ_RETURN(page
, start
, off
, count
, eof
, len
);
1668 static ide_proc_entry_t idecd_proc
[] = {
1669 { "capacity", S_IFREG
|S_IRUGO
, proc_idecd_read_capacity
, NULL
},
1670 { NULL
, 0, NULL
, NULL
}
1673 static ide_proc_entry_t
*ide_cd_proc_entries(ide_drive_t
*drive
)
1678 static const struct ide_proc_devset
*ide_cd_proc_devsets(ide_drive_t
*drive
)
1684 static const struct cd_list_entry ide_cd_quirks_list
[] = {
1685 /* Limit transfer size per interrupt. */
1686 { "SAMSUNG CD-ROM SCR-2430", NULL
, IDE_AFLAG_LIMIT_NFRAMES
},
1687 { "SAMSUNG CD-ROM SCR-2432", NULL
, IDE_AFLAG_LIMIT_NFRAMES
},
1688 /* SCR-3231 doesn't support the SET_CD_SPEED command. */
1689 { "SAMSUNG CD-ROM SCR-3231", NULL
, IDE_AFLAG_NO_SPEED_SELECT
},
1690 /* Old NEC260 (not R) was released before ATAPI 1.2 spec. */
1691 { "NEC CD-ROM DRIVE:260", "1.01", IDE_AFLAG_TOCADDR_AS_BCD
|
1692 IDE_AFLAG_PRE_ATAPI12
, },
1693 /* Vertos 300, some versions of this drive like to talk BCD. */
1694 { "V003S0DS", NULL
, IDE_AFLAG_VERTOS_300_SSD
, },
1695 /* Vertos 600 ESD. */
1696 { "V006E0DS", NULL
, IDE_AFLAG_VERTOS_600_ESD
, },
1698 * Sanyo 3 CD changer uses a non-standard command for CD changing
1699 * (by default standard ATAPI support for CD changers is used).
1701 { "CD-ROM CDR-C3 G", NULL
, IDE_AFLAG_SANYO_3CD
},
1702 { "CD-ROM CDR-C3G", NULL
, IDE_AFLAG_SANYO_3CD
},
1703 { "CD-ROM CDR_C36", NULL
, IDE_AFLAG_SANYO_3CD
},
1704 /* Stingray 8X CD-ROM. */
1705 { "STINGRAY 8422 IDE 8X CD-ROM 7-27-95", NULL
, IDE_AFLAG_PRE_ATAPI12
},
1707 * ACER 50X CD-ROM and WPI 32X CD-ROM require the full spec length
1708 * mode sense page capabilities size, but older drives break.
1710 { "ATAPI CD ROM DRIVE 50X MAX", NULL
, IDE_AFLAG_FULL_CAPS_PAGE
},
1711 { "WPI CDS-32X", NULL
, IDE_AFLAG_FULL_CAPS_PAGE
},
1712 /* ACER/AOpen 24X CD-ROM has the speed fields byte-swapped. */
1713 { "", "241N", IDE_AFLAG_LE_SPEED_FIELDS
},
1715 * Some drives used by Apple don't advertise audio play
1716 * but they do support reading TOC & audio datas.
1718 { "MATSHITADVD-ROM SR-8187", NULL
, IDE_AFLAG_PLAY_AUDIO_OK
},
1719 { "MATSHITADVD-ROM SR-8186", NULL
, IDE_AFLAG_PLAY_AUDIO_OK
},
1720 { "MATSHITADVD-ROM SR-8176", NULL
, IDE_AFLAG_PLAY_AUDIO_OK
},
1721 { "MATSHITADVD-ROM SR-8174", NULL
, IDE_AFLAG_PLAY_AUDIO_OK
},
1722 { "Optiarc DVD RW AD-5200A", NULL
, IDE_AFLAG_PLAY_AUDIO_OK
},
1723 { "Optiarc DVD RW AD-7200A", NULL
, IDE_AFLAG_PLAY_AUDIO_OK
},
1724 { "Optiarc DVD RW AD-7543A", NULL
, IDE_AFLAG_NO_AUTOCLOSE
},
1725 { "TEAC CD-ROM CD-224E", NULL
, IDE_AFLAG_NO_AUTOCLOSE
},
1729 static unsigned int ide_cd_flags(u16
*id
)
1731 const struct cd_list_entry
*cle
= ide_cd_quirks_list
;
1733 while (cle
->id_model
) {
1734 if (strcmp(cle
->id_model
, (char *)&id
[ATA_ID_PROD
]) == 0 &&
1735 (cle
->id_firmware
== NULL
||
1736 strstr((char *)&id
[ATA_ID_FW_REV
], cle
->id_firmware
)))
1737 return cle
->cd_flags
;
1744 static int ide_cdrom_setup(ide_drive_t
*drive
)
1746 struct cdrom_info
*cd
= drive
->driver_data
;
1747 struct cdrom_device_info
*cdi
= &cd
->devinfo
;
1748 u16
*id
= drive
->id
;
1749 char *fw_rev
= (char *)&id
[ATA_ID_FW_REV
];
1752 ide_debug_log(IDE_DBG_PROBE
, "enter");
1754 blk_queue_prep_rq(drive
->queue
, ide_cdrom_prep_fn
);
1755 blk_queue_dma_alignment(drive
->queue
, 31);
1756 blk_queue_update_dma_pad(drive
->queue
, 15);
1757 drive
->queue
->unplug_delay
= (1 * HZ
) / 1000;
1758 if (!drive
->queue
->unplug_delay
)
1759 drive
->queue
->unplug_delay
= 1;
1761 drive
->dev_flags
|= IDE_DFLAG_MEDIA_CHANGED
;
1762 drive
->atapi_flags
= IDE_AFLAG_NO_EJECT
| ide_cd_flags(id
);
1764 if ((drive
->atapi_flags
& IDE_AFLAG_VERTOS_300_SSD
) &&
1765 fw_rev
[4] == '1' && fw_rev
[6] <= '2')
1766 drive
->atapi_flags
|= (IDE_AFLAG_TOCTRACKS_AS_BCD
|
1767 IDE_AFLAG_TOCADDR_AS_BCD
);
1768 else if ((drive
->atapi_flags
& IDE_AFLAG_VERTOS_600_ESD
) &&
1769 fw_rev
[4] == '1' && fw_rev
[6] <= '2')
1770 drive
->atapi_flags
|= IDE_AFLAG_TOCTRACKS_AS_BCD
;
1771 else if (drive
->atapi_flags
& IDE_AFLAG_SANYO_3CD
)
1772 /* 3 => use CD in slot 0 */
1773 cdi
->sanyo_slot
= 3;
1775 nslots
= ide_cdrom_probe_capabilities(drive
);
1777 /* set correct block size */
1778 blk_queue_hardsect_size(drive
->queue
, CD_FRAMESIZE
);
1780 if (ide_cdrom_register(drive
, nslots
)) {
1781 printk(KERN_ERR PFX
"%s: %s failed to register device with the"
1782 " cdrom driver.\n", drive
->name
, __func__
);
1783 cd
->devinfo
.handle
= NULL
;
1787 ide_proc_register_driver(drive
, cd
->driver
);
1791 static void ide_cd_remove(ide_drive_t
*drive
)
1793 struct cdrom_info
*info
= drive
->driver_data
;
1795 ide_debug_log(IDE_DBG_FUNC
, "enter");
1797 ide_proc_unregister_driver(drive
, info
->driver
);
1798 device_del(&info
->dev
);
1799 del_gendisk(info
->disk
);
1801 mutex_lock(&idecd_ref_mutex
);
1802 put_device(&info
->dev
);
1803 mutex_unlock(&idecd_ref_mutex
);
1806 static void ide_cd_release(struct device
*dev
)
1808 struct cdrom_info
*info
= to_ide_drv(dev
, cdrom_info
);
1809 struct cdrom_device_info
*devinfo
= &info
->devinfo
;
1810 ide_drive_t
*drive
= info
->drive
;
1811 struct gendisk
*g
= info
->disk
;
1813 ide_debug_log(IDE_DBG_FUNC
, "enter");
1816 if (devinfo
->handle
== drive
)
1817 unregister_cdrom(devinfo
);
1818 drive
->driver_data
= NULL
;
1819 blk_queue_prep_rq(drive
->queue
, NULL
);
1820 g
->private_data
= NULL
;
1825 static int ide_cd_probe(ide_drive_t
*);
1827 static struct ide_driver ide_cdrom_driver
= {
1829 .owner
= THIS_MODULE
,
1830 .name
= "ide-cdrom",
1831 .bus
= &ide_bus_type
,
1833 .probe
= ide_cd_probe
,
1834 .remove
= ide_cd_remove
,
1835 .version
= IDECD_VERSION
,
1836 .do_request
= ide_cd_do_request
,
1837 #ifdef CONFIG_IDE_PROC_FS
1838 .proc_entries
= ide_cd_proc_entries
,
1839 .proc_devsets
= ide_cd_proc_devsets
,
1843 static int idecd_open(struct block_device
*bdev
, fmode_t mode
)
1845 struct cdrom_info
*info
= ide_cd_get(bdev
->bd_disk
);
1851 rc
= cdrom_open(&info
->devinfo
, bdev
, mode
);
1859 static int idecd_release(struct gendisk
*disk
, fmode_t mode
)
1861 struct cdrom_info
*info
= ide_drv_g(disk
, cdrom_info
);
1863 cdrom_release(&info
->devinfo
, mode
);
1870 static int idecd_set_spindown(struct cdrom_device_info
*cdi
, unsigned long arg
)
1872 struct packet_command cgc
;
1877 if (copy_from_user(&spindown
, (void __user
*)arg
, sizeof(char)))
1880 init_cdrom_command(&cgc
, buffer
, sizeof(buffer
), CGC_DATA_UNKNOWN
);
1882 stat
= cdrom_mode_sense(cdi
, &cgc
, GPMODE_CDROM_PAGE
, 0);
1886 buffer
[11] = (buffer
[11] & 0xf0) | (spindown
& 0x0f);
1887 return cdrom_mode_select(cdi
, &cgc
);
1890 static int idecd_get_spindown(struct cdrom_device_info
*cdi
, unsigned long arg
)
1892 struct packet_command cgc
;
1897 init_cdrom_command(&cgc
, buffer
, sizeof(buffer
), CGC_DATA_UNKNOWN
);
1899 stat
= cdrom_mode_sense(cdi
, &cgc
, GPMODE_CDROM_PAGE
, 0);
1903 spindown
= buffer
[11] & 0x0f;
1904 if (copy_to_user((void __user
*)arg
, &spindown
, sizeof(char)))
1909 static int idecd_ioctl(struct block_device
*bdev
, fmode_t mode
,
1910 unsigned int cmd
, unsigned long arg
)
1912 struct cdrom_info
*info
= ide_drv_g(bdev
->bd_disk
, cdrom_info
);
1916 case CDROMSETSPINDOWN
:
1917 return idecd_set_spindown(&info
->devinfo
, arg
);
1918 case CDROMGETSPINDOWN
:
1919 return idecd_get_spindown(&info
->devinfo
, arg
);
1924 err
= generic_ide_ioctl(info
->drive
, bdev
, cmd
, arg
);
1926 err
= cdrom_ioctl(&info
->devinfo
, bdev
, mode
, cmd
, arg
);
1931 static int idecd_media_changed(struct gendisk
*disk
)
1933 struct cdrom_info
*info
= ide_drv_g(disk
, cdrom_info
);
1934 return cdrom_media_changed(&info
->devinfo
);
1937 static int idecd_revalidate_disk(struct gendisk
*disk
)
1939 struct cdrom_info
*info
= ide_drv_g(disk
, cdrom_info
);
1940 struct request_sense sense
;
1942 ide_cd_read_toc(info
->drive
, &sense
);
1947 static struct block_device_operations idecd_ops
= {
1948 .owner
= THIS_MODULE
,
1950 .release
= idecd_release
,
1951 .locked_ioctl
= idecd_ioctl
,
1952 .media_changed
= idecd_media_changed
,
1953 .revalidate_disk
= idecd_revalidate_disk
1956 /* module options */
1957 static char *ignore
;
1958 module_param(ignore
, charp
, 0400);
1960 static unsigned long debug_mask
;
1961 module_param(debug_mask
, ulong
, 0644);
1963 MODULE_DESCRIPTION("ATAPI CD-ROM Driver");
1965 static int ide_cd_probe(ide_drive_t
*drive
)
1967 struct cdrom_info
*info
;
1969 struct request_sense sense
;
1971 ide_debug_log(IDE_DBG_PROBE
, "driver_req: %s, media: 0x%x",
1972 drive
->driver_req
, drive
->media
);
1974 if (!strstr("ide-cdrom", drive
->driver_req
))
1977 if (drive
->media
!= ide_cdrom
&& drive
->media
!= ide_optical
)
1980 /* skip drives that we were told to ignore */
1981 if (ignore
!= NULL
) {
1982 if (strstr(ignore
, drive
->name
)) {
1983 printk(KERN_INFO PFX
"ignoring drive %s\n",
1989 drive
->debug_mask
= debug_mask
;
1990 drive
->irq_handler
= cdrom_newpc_intr
;
1992 info
= kzalloc(sizeof(struct cdrom_info
), GFP_KERNEL
);
1994 printk(KERN_ERR PFX
"%s: Can't allocate a cdrom structure\n",
1999 g
= alloc_disk(1 << PARTN_BITS
);
2003 ide_init_disk(g
, drive
);
2005 info
->dev
.parent
= &drive
->gendev
;
2006 info
->dev
.release
= ide_cd_release
;
2007 dev_set_name(&info
->dev
, dev_name(&drive
->gendev
));
2009 if (device_register(&info
->dev
))
2012 info
->drive
= drive
;
2013 info
->driver
= &ide_cdrom_driver
;
2016 g
->private_data
= &info
->driver
;
2018 drive
->driver_data
= info
;
2021 g
->driverfs_dev
= &drive
->gendev
;
2022 g
->flags
= GENHD_FL_CD
| GENHD_FL_REMOVABLE
;
2023 if (ide_cdrom_setup(drive
)) {
2024 put_device(&info
->dev
);
2028 ide_cd_read_toc(drive
, &sense
);
2029 g
->fops
= &idecd_ops
;
2030 g
->flags
|= GENHD_FL_REMOVABLE
;
2042 static void __exit
ide_cdrom_exit(void)
2044 driver_unregister(&ide_cdrom_driver
.gen_driver
);
2047 static int __init
ide_cdrom_init(void)
2049 printk(KERN_INFO DRV_NAME
" driver " IDECD_VERSION
"\n");
2050 return driver_register(&ide_cdrom_driver
.gen_driver
);
2053 MODULE_ALIAS("ide:*m-cdrom*");
2054 MODULE_ALIAS("ide-cd");
2055 module_init(ide_cdrom_init
);
2056 module_exit(ide_cdrom_exit
);
2057 MODULE_LICENSE("GPL");