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 IDECD_VERSION "5.00"
28 #include <linux/module.h>
29 #include <linux/types.h>
30 #include <linux/kernel.h>
31 #include <linux/delay.h>
32 #include <linux/timer.h>
33 #include <linux/slab.h>
34 #include <linux/interrupt.h>
35 #include <linux/errno.h>
36 #include <linux/cdrom.h>
37 #include <linux/ide.h>
38 #include <linux/completion.h>
39 #include <linux/mutex.h>
40 #include <linux/bcd.h>
42 /* For SCSI -> ATAPI command conversion */
43 #include <scsi/scsi.h>
45 #include <linux/irq.h>
47 #include <asm/byteorder.h>
48 #include <linux/uaccess.h>
49 #include <asm/unaligned.h>
53 static DEFINE_MUTEX(idecd_ref_mutex
);
55 static void ide_cd_release(struct kref
*);
57 static struct cdrom_info
*ide_cd_get(struct gendisk
*disk
)
59 struct cdrom_info
*cd
= NULL
;
61 mutex_lock(&idecd_ref_mutex
);
62 cd
= ide_drv_g(disk
, cdrom_info
);
64 if (ide_device_get(cd
->drive
))
70 mutex_unlock(&idecd_ref_mutex
);
74 static void ide_cd_put(struct cdrom_info
*cd
)
76 ide_drive_t
*drive
= cd
->drive
;
78 mutex_lock(&idecd_ref_mutex
);
79 kref_put(&cd
->kref
, ide_cd_release
);
80 ide_device_put(drive
);
81 mutex_unlock(&idecd_ref_mutex
);
85 * Generic packet command support and error handling routines.
88 /* Mark that we've seen a media change and invalidate our internal buffers. */
89 static void cdrom_saw_media_change(ide_drive_t
*drive
)
91 drive
->atapi_flags
|= IDE_AFLAG_MEDIA_CHANGED
;
92 drive
->atapi_flags
&= ~IDE_AFLAG_TOC_VALID
;
95 static int cdrom_log_sense(ide_drive_t
*drive
, struct request
*rq
,
96 struct request_sense
*sense
)
100 if (!sense
|| !rq
|| (rq
->cmd_flags
& REQ_QUIET
))
103 switch (sense
->sense_key
) {
105 case RECOVERED_ERROR
:
109 * don't care about tray state messages for e.g. capacity
110 * commands or in-progress or becoming ready
112 if (sense
->asc
== 0x3a || sense
->asc
== 0x04)
116 case ILLEGAL_REQUEST
:
118 * don't log START_STOP unit with LoEj set, since we cannot
119 * reliably check if drive can auto-close
121 if (rq
->cmd
[0] == GPCMD_START_STOP_UNIT
&& sense
->asc
== 0x24)
127 * Make good and sure we've seen this potential media change.
128 * Some drives (i.e. Creative) fail to present the correct sense
129 * key in the error register.
131 cdrom_saw_media_change(drive
);
140 static void cdrom_analyze_sense_data(ide_drive_t
*drive
,
141 struct request
*failed_command
,
142 struct request_sense
*sense
)
144 unsigned long sector
;
145 unsigned long bio_sectors
;
146 struct cdrom_info
*info
= drive
->driver_data
;
148 if (!cdrom_log_sense(drive
, failed_command
, sense
))
152 * If a read toc is executed for a CD-R or CD-RW medium where the first
153 * toc has not been recorded yet, it will fail with 05/24/00 (which is a
156 if (failed_command
&& failed_command
->cmd
[0] == GPCMD_READ_TOC_PMA_ATIP
)
157 if (sense
->sense_key
== 0x05 && sense
->asc
== 0x24)
161 if (sense
->error_code
== 0x70) {
162 switch (sense
->sense_key
) {
164 case VOLUME_OVERFLOW
:
165 case ILLEGAL_REQUEST
:
168 if (failed_command
== NULL
||
169 !blk_fs_request(failed_command
))
171 sector
= (sense
->information
[0] << 24) |
172 (sense
->information
[1] << 16) |
173 (sense
->information
[2] << 8) |
174 (sense
->information
[3]);
176 if (drive
->queue
->hardsect_size
== 2048)
177 /* device sector size is 2K */
180 bio_sectors
= max(bio_sectors(failed_command
->bio
), 4U);
181 sector
&= ~(bio_sectors
- 1);
183 if (sector
< get_capacity(info
->disk
) &&
184 drive
->probed_capacity
- sector
< 4 * 75)
185 set_capacity(info
->disk
, sector
);
189 ide_cd_log_error(drive
->name
, failed_command
, sense
);
192 static void cdrom_queue_request_sense(ide_drive_t
*drive
, void *sense
,
193 struct request
*failed_command
)
195 struct cdrom_info
*info
= drive
->driver_data
;
196 struct request
*rq
= &info
->request_sense_request
;
199 sense
= &info
->sense_data
;
201 /* stuff the sense request in front of our current request */
202 blk_rq_init(NULL
, rq
);
203 rq
->cmd_type
= REQ_TYPE_ATA_PC
;
204 rq
->rq_disk
= info
->disk
;
207 rq
->cmd
[0] = GPCMD_REQUEST_SENSE
;
211 rq
->cmd_type
= REQ_TYPE_SENSE
;
212 rq
->cmd_flags
|= REQ_PREEMPT
;
214 /* NOTE! Save the failed command in "rq->buffer" */
215 rq
->buffer
= (void *) failed_command
;
217 ide_do_drive_cmd(drive
, rq
);
220 static void cdrom_end_request(ide_drive_t
*drive
, int uptodate
)
222 struct request
*rq
= HWGROUP(drive
)->rq
;
223 int nsectors
= rq
->hard_cur_sectors
;
225 if (blk_sense_request(rq
) && uptodate
) {
227 * For REQ_TYPE_SENSE, "rq->buffer" points to the original
230 struct request
*failed
= (struct request
*) rq
->buffer
;
231 struct cdrom_info
*info
= drive
->driver_data
;
232 void *sense
= &info
->sense_data
;
237 sense
= failed
->sense
;
238 failed
->sense_len
= rq
->sense_len
;
240 cdrom_analyze_sense_data(drive
, failed
, sense
);
242 * now end the failed request
244 if (blk_fs_request(failed
)) {
245 if (ide_end_dequeued_request(drive
, failed
, 0,
246 failed
->hard_nr_sectors
))
249 spin_lock_irqsave(&ide_lock
, flags
);
250 if (__blk_end_request(failed
, -EIO
,
253 spin_unlock_irqrestore(&ide_lock
, flags
);
256 cdrom_analyze_sense_data(drive
, NULL
, sense
);
259 if (!rq
->current_nr_sectors
&& blk_fs_request(rq
))
261 /* make sure it's fully ended */
262 if (blk_pc_request(rq
))
263 nsectors
= (rq
->data_len
+ 511) >> 9;
267 ide_end_request(drive
, uptodate
, nsectors
);
270 static void ide_dump_status_no_sense(ide_drive_t
*drive
, const char *msg
, u8 st
)
274 ide_dump_status(drive
, msg
, st
);
279 * 0: if the request should be continued.
280 * 1: if the request was ended.
282 static int cdrom_decode_status(ide_drive_t
*drive
, int good_stat
, int *stat_ret
)
284 ide_hwif_t
*hwif
= drive
->hwif
;
285 struct request
*rq
= hwif
->hwgroup
->rq
;
286 int stat
, err
, sense_key
;
288 /* check for errors */
289 stat
= hwif
->tp_ops
->read_status(hwif
);
294 if (OK_STAT(stat
, good_stat
, BAD_R_STAT
))
297 /* get the IDE error register */
298 err
= ide_read_error(drive
);
299 sense_key
= err
>> 4;
302 printk(KERN_ERR
"%s: missing rq in %s\n",
303 drive
->name
, __func__
);
307 if (blk_sense_request(rq
)) {
309 * We got an error trying to get sense info from the drive
310 * (probably while trying to recover from a former error).
313 rq
->cmd_flags
|= REQ_FAILED
;
314 cdrom_end_request(drive
, 0);
315 ide_error(drive
, "request sense failure", stat
);
318 } else if (blk_pc_request(rq
) || rq
->cmd_type
== REQ_TYPE_ATA_PC
) {
319 /* All other functions, except for READ. */
322 * if we have an error, pass back CHECK_CONDITION as the
325 if (blk_pc_request(rq
) && !rq
->errors
)
326 rq
->errors
= SAM_STAT_CHECK_CONDITION
;
328 /* check for tray open */
329 if (sense_key
== NOT_READY
) {
330 cdrom_saw_media_change(drive
);
331 } else if (sense_key
== UNIT_ATTENTION
) {
332 /* check for media change */
333 cdrom_saw_media_change(drive
);
335 } else if (sense_key
== ILLEGAL_REQUEST
&&
336 rq
->cmd
[0] == GPCMD_START_STOP_UNIT
) {
338 * Don't print error message for this condition--
339 * SFF8090i indicates that 5/24/00 is the correct
340 * response to a request to close the tray if the
341 * drive doesn't have that capability.
342 * cdrom_log_sense() knows this!
344 } else if (!(rq
->cmd_flags
& REQ_QUIET
)) {
345 /* otherwise, print an error */
346 ide_dump_status(drive
, "packet command error", stat
);
349 rq
->cmd_flags
|= REQ_FAILED
;
352 * instead of playing games with moving completions around,
353 * remove failed request completely and end it when the
354 * request sense has completed
358 } else if (blk_fs_request(rq
)) {
359 int do_end_request
= 0;
361 /* handle errors from READ and WRITE requests */
363 if (blk_noretry_request(rq
))
366 if (sense_key
== NOT_READY
) {
368 if (rq_data_dir(rq
) == READ
) {
369 cdrom_saw_media_change(drive
);
371 /* fail the request */
372 printk(KERN_ERR
"%s: tray open\n", drive
->name
);
375 struct cdrom_info
*info
= drive
->driver_data
;
378 * Allow the drive 5 seconds to recover, some
379 * devices will return this error while flushing
383 info
->write_timeout
= jiffies
+
384 ATAPI_WAIT_WRITE_BUSY
;
386 if (time_after(jiffies
, info
->write_timeout
))
392 * take a breather relying on the unplug
393 * timer to kick us again
395 spin_lock_irqsave(&ide_lock
, flags
);
396 blk_plug_device(drive
->queue
);
397 spin_unlock_irqrestore(&ide_lock
,
402 } else if (sense_key
== UNIT_ATTENTION
) {
404 cdrom_saw_media_change(drive
);
407 * Arrange to retry the request but be sure to give up
408 * if we've retried too many times.
410 if (++rq
->errors
> ERROR_MAX
)
412 } else if (sense_key
== ILLEGAL_REQUEST
||
413 sense_key
== DATA_PROTECT
) {
415 * No point in retrying after an illegal request or data
418 ide_dump_status_no_sense(drive
, "command error", stat
);
420 } else if (sense_key
== MEDIUM_ERROR
) {
422 * No point in re-trying a zillion times on a bad
423 * sector. If we got here the error is not correctable.
425 ide_dump_status_no_sense(drive
,
426 "media error (bad sector)",
429 } else if (sense_key
== BLANK_CHECK
) {
430 /* disk appears blank ?? */
431 ide_dump_status_no_sense(drive
, "media error (blank)",
434 } else if ((err
& ~ATA_ABORTED
) != 0) {
435 /* go to the default handler for other errors */
436 ide_error(drive
, "cdrom_decode_status", stat
);
438 } else if ((++rq
->errors
> ERROR_MAX
)) {
439 /* we've racked up too many retries, abort */
444 * End a request through request sense analysis when we have
445 * sense data. We need this in order to perform end of media
452 * If we got a CHECK_CONDITION status, queue
453 * a request sense command.
456 cdrom_queue_request_sense(drive
, NULL
, NULL
);
458 blk_dump_rq_flags(rq
, "ide-cd: bad rq");
459 cdrom_end_request(drive
, 0);
462 /* retry, or handle the next request */
466 if (stat
& ATA_ERR
) {
469 spin_lock_irqsave(&ide_lock
, flags
);
470 blkdev_dequeue_request(rq
);
471 HWGROUP(drive
)->rq
= NULL
;
472 spin_unlock_irqrestore(&ide_lock
, flags
);
474 cdrom_queue_request_sense(drive
, rq
->sense
, rq
);
476 cdrom_end_request(drive
, 0);
481 static int cdrom_timer_expiry(ide_drive_t
*drive
)
483 struct request
*rq
= HWGROUP(drive
)->rq
;
484 unsigned long wait
= 0;
487 * Some commands are *slow* and normally take a long time to complete.
488 * Usually we can use the ATAPI "disconnect" to bypass this, but not all
489 * commands/drives support that. Let ide_timer_expiry keep polling us
492 switch (rq
->cmd
[0]) {
494 case GPCMD_FORMAT_UNIT
:
495 case GPCMD_RESERVE_RZONE_TRACK
:
496 case GPCMD_CLOSE_TRACK
:
497 case GPCMD_FLUSH_CACHE
:
498 wait
= ATAPI_WAIT_PC
;
501 if (!(rq
->cmd_flags
& REQ_QUIET
))
502 printk(KERN_INFO
"ide-cd: cmd 0x%x timed out\n",
511 * Set up the device registers for transferring a packet command on DEV,
512 * expecting to later transfer XFERLEN bytes. HANDLER is the routine
513 * which actually transfers the command to the drive. If this is a
514 * drq_interrupt device, this routine will arrange for HANDLER to be
515 * called when the interrupt from the drive arrives. Otherwise, HANDLER
516 * will be called immediately after the drive is prepared for the transfer.
518 static ide_startstop_t
cdrom_start_packet_command(ide_drive_t
*drive
,
520 ide_handler_t
*handler
)
522 struct cdrom_info
*info
= drive
->driver_data
;
523 ide_hwif_t
*hwif
= drive
->hwif
;
525 /* FIXME: for Virtual DMA we must check harder */
527 info
->dma
= !hwif
->dma_ops
->dma_setup(drive
);
529 /* set up the controller registers */
530 ide_pktcmd_tf_load(drive
, IDE_TFLAG_OUT_NSECT
| IDE_TFLAG_OUT_LBAL
,
533 if (drive
->atapi_flags
& IDE_AFLAG_DRQ_INTERRUPT
) {
534 /* waiting for CDB interrupt, not DMA yet. */
536 drive
->waiting_for_dma
= 0;
539 ide_execute_command(drive
, ATA_CMD_PACKET
, handler
,
540 ATAPI_WAIT_PC
, cdrom_timer_expiry
);
543 ide_execute_pkt_cmd(drive
);
545 return (*handler
) (drive
);
550 * Send a packet command to DRIVE described by CMD_BUF and CMD_LEN. The device
551 * registers must have already been prepared by cdrom_start_packet_command.
552 * HANDLER is the interrupt handler to call when the command completes or
553 * there's data ready.
555 #define ATAPI_MIN_CDB_BYTES 12
556 static ide_startstop_t
cdrom_transfer_packet_command(ide_drive_t
*drive
,
558 ide_handler_t
*handler
)
560 ide_hwif_t
*hwif
= drive
->hwif
;
562 struct cdrom_info
*info
= drive
->driver_data
;
563 ide_startstop_t startstop
;
565 if (drive
->atapi_flags
& IDE_AFLAG_DRQ_INTERRUPT
) {
567 * Here we should have been called after receiving an interrupt
568 * from the device. DRQ should how be set.
571 /* check for errors */
572 if (cdrom_decode_status(drive
, ATA_DRQ
, NULL
))
575 /* ok, next interrupt will be DMA interrupt */
577 drive
->waiting_for_dma
= 1;
579 /* otherwise, we must wait for DRQ to get set */
580 if (ide_wait_stat(&startstop
, drive
, ATA_DRQ
,
581 ATA_BUSY
, WAIT_READY
))
585 /* arm the interrupt handler */
586 ide_set_handler(drive
, handler
, rq
->timeout
, cdrom_timer_expiry
);
588 /* ATAPI commands get padded out to 12 bytes minimum */
589 cmd_len
= COMMAND_SIZE(rq
->cmd
[0]);
590 if (cmd_len
< ATAPI_MIN_CDB_BYTES
)
591 cmd_len
= ATAPI_MIN_CDB_BYTES
;
593 /* send the command to the device */
594 hwif
->tp_ops
->output_data(drive
, NULL
, rq
->cmd
, cmd_len
);
596 /* start the DMA if need be */
598 hwif
->dma_ops
->dma_start(drive
);
604 * Check the contents of the interrupt reason register from the cdrom
605 * and attempt to recover if there are problems. Returns 0 if everything's
606 * ok; nonzero if the request has been terminated.
608 static int ide_cd_check_ireason(ide_drive_t
*drive
, struct request
*rq
,
609 int len
, int ireason
, int rw
)
611 ide_hwif_t
*hwif
= drive
->hwif
;
614 * ireason == 0: the drive wants to receive data from us
615 * ireason == 2: the drive is expecting to transfer data to us
617 if (ireason
== (!rw
<< 1))
619 else if (ireason
== (rw
<< 1)) {
622 printk(KERN_ERR
"%s: %s: wrong transfer direction!\n",
623 drive
->name
, __func__
);
625 ide_pad_transfer(drive
, rw
, len
);
626 } else if (rw
== 0 && ireason
== 1) {
628 * Some drives (ASUS) seem to tell us that status info is
629 * available. Just get it and ignore.
631 (void)hwif
->tp_ops
->read_status(hwif
);
634 /* drive wants a command packet, or invalid ireason... */
635 printk(KERN_ERR
"%s: %s: bad interrupt reason 0x%02x\n",
636 drive
->name
, __func__
, ireason
);
639 if (rq
->cmd_type
== REQ_TYPE_ATA_PC
)
640 rq
->cmd_flags
|= REQ_FAILED
;
642 cdrom_end_request(drive
, 0);
647 * Assume that the drive will always provide data in multiples of at least
648 * SECTOR_SIZE, as it gets hairy to keep track of the transfers otherwise.
650 static int ide_cd_check_transfer_size(ide_drive_t
*drive
, int len
)
652 if ((len
% SECTOR_SIZE
) == 0)
655 printk(KERN_ERR
"%s: %s: Bad transfer size %d\n",
656 drive
->name
, __func__
, len
);
658 if (drive
->atapi_flags
& IDE_AFLAG_LIMIT_NFRAMES
)
659 printk(KERN_ERR
" This drive is not supported by "
660 "this version of the driver\n");
662 printk(KERN_ERR
" Trying to limit transfer sizes\n");
663 drive
->atapi_flags
|= IDE_AFLAG_LIMIT_NFRAMES
;
669 static ide_startstop_t
cdrom_newpc_intr(ide_drive_t
*);
671 static ide_startstop_t
ide_cd_prepare_rw_request(ide_drive_t
*drive
,
674 if (rq_data_dir(rq
) == READ
) {
675 unsigned short sectors_per_frame
=
676 queue_hardsect_size(drive
->queue
) >> SECTOR_BITS
;
677 int nskip
= rq
->sector
& (sectors_per_frame
- 1);
680 * If the requested sector doesn't start on a frame boundary,
681 * we must adjust the start of the transfer so that it does,
682 * and remember to skip the first few sectors.
684 * If the rq->current_nr_sectors field is larger than the size
685 * of the buffer, it will mean that we're to skip a number of
686 * sectors equal to the amount by which rq->current_nr_sectors
687 * is larger than the buffer size.
690 /* sanity check... */
691 if (rq
->current_nr_sectors
!=
692 bio_cur_sectors(rq
->bio
)) {
693 printk(KERN_ERR
"%s: %s: buffer botch (%u)\n",
694 drive
->name
, __func__
,
695 rq
->current_nr_sectors
);
696 cdrom_end_request(drive
, 0);
699 rq
->current_nr_sectors
+= nskip
;
704 /* the immediate bit */
707 /* set up the command */
708 rq
->timeout
= ATAPI_WAIT_PC
;
714 * Routine to send a read/write packet command to the drive. This is usually
715 * called directly from cdrom_start_{read,write}(). However, for drq_interrupt
716 * devices, it is called from an interrupt when the drive is ready to accept
719 static ide_startstop_t
cdrom_start_rw_cont(ide_drive_t
*drive
)
721 struct request
*rq
= drive
->hwif
->hwgroup
->rq
;
723 /* send the command to the drive and return */
724 return cdrom_transfer_packet_command(drive
, rq
, cdrom_newpc_intr
);
727 #define IDECD_SEEK_THRESHOLD (1000) /* 1000 blocks */
728 #define IDECD_SEEK_TIMER (5 * WAIT_MIN_SLEEP) /* 100 ms */
729 #define IDECD_SEEK_TIMEOUT (2 * WAIT_CMD) /* 20 sec */
731 static ide_startstop_t
cdrom_seek_intr(ide_drive_t
*drive
)
733 struct cdrom_info
*info
= drive
->driver_data
;
735 static int retry
= 10;
737 if (cdrom_decode_status(drive
, 0, &stat
))
740 drive
->atapi_flags
|= IDE_AFLAG_SEEKING
;
742 if (retry
&& time_after(jiffies
, info
->start_seek
+ IDECD_SEEK_TIMER
)) {
744 drive
->dev_flags
&= ~IDE_DFLAG_DSC_OVERLAP
;
749 static void ide_cd_prepare_seek_request(ide_drive_t
*drive
, struct request
*rq
)
751 sector_t frame
= rq
->sector
;
753 sector_div(frame
, queue_hardsect_size(drive
->queue
) >> SECTOR_BITS
);
755 memset(rq
->cmd
, 0, BLK_MAX_CDB
);
756 rq
->cmd
[0] = GPCMD_SEEK
;
757 put_unaligned(cpu_to_be32(frame
), (unsigned int *) &rq
->cmd
[2]);
759 rq
->timeout
= ATAPI_WAIT_PC
;
762 static ide_startstop_t
cdrom_start_seek_continuation(ide_drive_t
*drive
)
764 struct request
*rq
= drive
->hwif
->hwgroup
->rq
;
766 return cdrom_transfer_packet_command(drive
, rq
, &cdrom_seek_intr
);
770 * Fix up a possibly partially-processed request so that we can start it over
771 * entirely, or even put it back on the request queue.
773 static void restore_request(struct request
*rq
)
775 if (rq
->buffer
!= bio_data(rq
->bio
)) {
777 (rq
->buffer
- (char *)bio_data(rq
->bio
)) / SECTOR_SIZE
;
779 rq
->buffer
= bio_data(rq
->bio
);
783 rq
->current_nr_sectors
= bio_cur_sectors(rq
->bio
);
784 rq
->hard_cur_sectors
= rq
->current_nr_sectors
;
785 rq
->hard_nr_sectors
= rq
->nr_sectors
;
786 rq
->hard_sector
= rq
->sector
;
787 rq
->q
->prep_rq_fn(rq
->q
, rq
);
791 * All other packet commands.
793 static void ide_cd_request_sense_fixup(struct request
*rq
)
796 * Some of the trailing request sense fields are optional,
797 * and some drives don't send them. Sigh.
799 if (rq
->cmd
[0] == GPCMD_REQUEST_SENSE
&&
800 rq
->data_len
> 0 && rq
->data_len
<= 5)
801 while (rq
->data_len
> 0) {
802 *(u8
*)rq
->data
++ = 0;
807 int ide_cd_queue_pc(ide_drive_t
*drive
, const unsigned char *cmd
,
808 int write
, void *buffer
, unsigned *bufflen
,
809 struct request_sense
*sense
, int timeout
,
810 unsigned int cmd_flags
)
812 struct cdrom_info
*info
= drive
->driver_data
;
813 struct request_sense local_sense
;
815 unsigned int flags
= 0;
818 sense
= &local_sense
;
820 /* start of retry loop */
825 rq
= blk_get_request(drive
->queue
, write
, __GFP_WAIT
);
827 memcpy(rq
->cmd
, cmd
, BLK_MAX_CDB
);
828 rq
->cmd_type
= REQ_TYPE_ATA_PC
;
830 rq
->cmd_flags
|= cmd_flags
;
831 rq
->timeout
= timeout
;
834 rq
->data_len
= *bufflen
;
837 error
= blk_execute_rq(drive
->queue
, info
->disk
, rq
, 0);
840 *bufflen
= rq
->data_len
;
842 flags
= rq
->cmd_flags
;
846 * FIXME: we should probably abort/retry or something in case of
849 if (flags
& REQ_FAILED
) {
851 * The request failed. Retry if it was due to a unit
852 * attention status (usually means media was changed).
854 struct request_sense
*reqbuf
= sense
;
856 if (reqbuf
->sense_key
== UNIT_ATTENTION
)
857 cdrom_saw_media_change(drive
);
858 else if (reqbuf
->sense_key
== NOT_READY
&&
859 reqbuf
->asc
== 4 && reqbuf
->ascq
!= 4) {
861 * The drive is in the process of loading
862 * a disk. Retry, but wait a little to give
863 * the drive time to complete the load.
867 /* otherwise, don't retry */
873 /* end of retry loop */
874 } while ((flags
& REQ_FAILED
) && retries
>= 0);
876 /* return an error if the command failed */
877 return (flags
& REQ_FAILED
) ? -EIO
: 0;
881 * Called from blk_end_request_callback() after the data of the request is
882 * completed and before the request itself is completed. By returning value '1',
883 * blk_end_request_callback() returns immediately without completing it.
885 static int cdrom_newpc_intr_dummy_cb(struct request
*rq
)
890 static ide_startstop_t
cdrom_newpc_intr(ide_drive_t
*drive
)
892 ide_hwif_t
*hwif
= drive
->hwif
;
893 struct cdrom_info
*info
= drive
->driver_data
;
894 struct request
*rq
= HWGROUP(drive
)->rq
;
895 xfer_func_t
*xferfunc
;
896 ide_expiry_t
*expiry
= NULL
;
897 int dma_error
= 0, dma
, stat
, thislen
, uptodate
= 0;
898 int write
= (rq_data_dir(rq
) == WRITE
) ? 1 : 0;
899 unsigned int timeout
;
903 /* check for errors */
907 dma_error
= hwif
->dma_ops
->dma_end(drive
);
909 printk(KERN_ERR
"%s: DMA %s error\n", drive
->name
,
910 write
? "write" : "read");
915 if (cdrom_decode_status(drive
, 0, &stat
))
918 /* using dma, transfer is complete now */
921 return ide_error(drive
, "dma error", stat
);
922 if (blk_fs_request(rq
)) {
923 ide_end_request(drive
, 1, rq
->nr_sectors
);
929 ide_read_bcount_and_ireason(drive
, &len
, &ireason
);
931 thislen
= blk_fs_request(rq
) ? len
: rq
->data_len
;
935 /* If DRQ is clear, the command has completed. */
936 if ((stat
& ATA_DRQ
) == 0) {
937 if (blk_fs_request(rq
)) {
939 * If we're not done reading/writing, complain.
940 * Otherwise, complete the command normally.
943 if (rq
->current_nr_sectors
> 0) {
944 printk(KERN_ERR
"%s: %s: data underrun "
946 drive
->name
, __func__
,
947 rq
->current_nr_sectors
);
949 rq
->cmd_flags
|= REQ_FAILED
;
952 cdrom_end_request(drive
, uptodate
);
954 } else if (!blk_pc_request(rq
)) {
955 ide_cd_request_sense_fixup(rq
);
956 /* complain if we still have data left to transfer */
957 uptodate
= rq
->data_len
? 0 : 1;
962 /* check which way to transfer data */
963 if (ide_cd_check_ireason(drive
, rq
, len
, ireason
, write
))
966 if (blk_fs_request(rq
)) {
970 if (ide_cd_check_transfer_size(drive
, len
)) {
971 cdrom_end_request(drive
, 0);
976 * First, figure out if we need to bit-bucket
977 * any of the leading sectors.
979 nskip
= min_t(int, rq
->current_nr_sectors
980 - bio_cur_sectors(rq
->bio
),
983 ide_pad_transfer(drive
, write
, nskip
<< 9);
984 rq
->current_nr_sectors
-= nskip
;
985 thislen
-= (nskip
<< 9);
992 xferfunc
= hwif
->tp_ops
->output_data
;
995 xferfunc
= hwif
->tp_ops
->input_data
;
999 while (thislen
> 0) {
1000 u8
*ptr
= blk_fs_request(rq
) ? NULL
: rq
->data
;
1001 int blen
= rq
->data_len
;
1005 if (blk_fs_request(rq
)) {
1007 blen
= rq
->current_nr_sectors
<< 9;
1009 ptr
= bio_data(rq
->bio
);
1010 blen
= bio_iovec(rq
->bio
)->bv_len
;
1015 if (blk_fs_request(rq
) && !write
)
1017 * If the buffers are full, pipe the rest into
1020 ide_pad_transfer(drive
, 0, thislen
);
1022 printk(KERN_ERR
"%s: confused, missing data\n",
1024 blk_dump_rq_flags(rq
, rq_data_dir(rq
)
1025 ? "cdrom_newpc_intr, write"
1026 : "cdrom_newpc_intr, read");
1034 xferfunc(drive
, NULL
, ptr
, blen
);
1039 if (blk_fs_request(rq
)) {
1041 rq
->nr_sectors
-= (blen
>> 9);
1042 rq
->current_nr_sectors
-= (blen
>> 9);
1043 rq
->sector
+= (blen
>> 9);
1045 if (rq
->current_nr_sectors
== 0 && rq
->nr_sectors
)
1046 cdrom_end_request(drive
, 1);
1048 rq
->data_len
-= blen
;
1051 * The request can't be completed until DRQ is cleared.
1052 * So complete the data, but don't complete the request
1053 * using the dummy function for the callback feature
1054 * of blk_end_request_callback().
1057 blk_end_request_callback(rq
, 0, blen
,
1058 cdrom_newpc_intr_dummy_cb
);
1062 if (!write
&& blk_sense_request(rq
))
1063 rq
->sense_len
+= blen
;
1066 /* pad, if necessary */
1067 if (!blk_fs_request(rq
) && len
> 0)
1068 ide_pad_transfer(drive
, write
, len
);
1070 if (blk_pc_request(rq
)) {
1071 timeout
= rq
->timeout
;
1073 timeout
= ATAPI_WAIT_PC
;
1074 if (!blk_fs_request(rq
))
1075 expiry
= cdrom_timer_expiry
;
1078 ide_set_handler(drive
, cdrom_newpc_intr
, timeout
, expiry
);
1082 if (blk_pc_request(rq
)) {
1083 unsigned long flags
;
1084 unsigned int dlen
= rq
->data_len
;
1089 spin_lock_irqsave(&ide_lock
, flags
);
1090 if (__blk_end_request(rq
, 0, dlen
))
1092 HWGROUP(drive
)->rq
= NULL
;
1093 spin_unlock_irqrestore(&ide_lock
, flags
);
1096 rq
->cmd_flags
|= REQ_FAILED
;
1097 cdrom_end_request(drive
, uptodate
);
1102 static ide_startstop_t
cdrom_start_rw(ide_drive_t
*drive
, struct request
*rq
)
1104 struct cdrom_info
*cd
= drive
->driver_data
;
1105 int write
= rq_data_dir(rq
) == WRITE
;
1106 unsigned short sectors_per_frame
=
1107 queue_hardsect_size(drive
->queue
) >> SECTOR_BITS
;
1110 /* disk has become write protected */
1111 if (get_disk_ro(cd
->disk
)) {
1112 cdrom_end_request(drive
, 0);
1117 * We may be retrying this request after an error. Fix up any
1118 * weirdness which might be present in the request packet.
1120 restore_request(rq
);
1123 /* use DMA, if possible / writes *must* be hardware frame aligned */
1124 if ((rq
->nr_sectors
& (sectors_per_frame
- 1)) ||
1125 (rq
->sector
& (sectors_per_frame
- 1))) {
1127 cdrom_end_request(drive
, 0);
1132 cd
->dma
= !!(drive
->dev_flags
& IDE_DFLAG_USING_DMA
);
1135 cd
->devinfo
.media_written
= 1;
1140 static ide_startstop_t
cdrom_do_newpc_cont(ide_drive_t
*drive
)
1142 struct request
*rq
= HWGROUP(drive
)->rq
;
1144 return cdrom_transfer_packet_command(drive
, rq
, cdrom_newpc_intr
);
1147 static void cdrom_do_block_pc(ide_drive_t
*drive
, struct request
*rq
)
1149 struct cdrom_info
*info
= drive
->driver_data
;
1151 if (blk_pc_request(rq
))
1152 rq
->cmd_flags
|= REQ_QUIET
;
1154 rq
->cmd_flags
&= ~REQ_FAILED
;
1159 if (rq
->bio
|| ((rq
->cmd_type
== REQ_TYPE_ATA_PC
) && rq
->data_len
)) {
1160 struct request_queue
*q
= drive
->queue
;
1161 unsigned int alignment
;
1165 buf
= bio_data(rq
->bio
);
1169 info
->dma
= !!(drive
->dev_flags
& IDE_DFLAG_USING_DMA
);
1172 * check if dma is safe
1174 * NOTE! The "len" and "addr" checks should possibly have
1177 alignment
= queue_dma_alignment(q
) | q
->dma_pad_mask
;
1178 if ((unsigned long)buf
& alignment
|| rq
->data_len
& alignment
1179 || object_is_on_stack(buf
))
1185 * cdrom driver request routine.
1187 static ide_startstop_t
ide_cd_do_request(ide_drive_t
*drive
, struct request
*rq
,
1190 struct cdrom_info
*info
= drive
->driver_data
;
1194 if (blk_fs_request(rq
)) {
1195 if (drive
->atapi_flags
& IDE_AFLAG_SEEKING
) {
1196 ide_hwif_t
*hwif
= drive
->hwif
;
1197 unsigned long elapsed
= jiffies
- info
->start_seek
;
1198 int stat
= hwif
->tp_ops
->read_status(hwif
);
1200 if ((stat
& ATA_DSC
) != ATA_DSC
) {
1201 if (elapsed
< IDECD_SEEK_TIMEOUT
) {
1202 ide_stall_queue(drive
,
1206 printk(KERN_ERR
"%s: DSC timeout\n",
1209 drive
->atapi_flags
&= ~IDE_AFLAG_SEEKING
;
1211 if (rq_data_dir(rq
) == READ
&&
1212 IDE_LARGE_SEEK(info
->last_block
, block
,
1213 IDECD_SEEK_THRESHOLD
) &&
1214 (drive
->dev_flags
& IDE_DFLAG_DSC_OVERLAP
)) {
1216 fn
= cdrom_start_seek_continuation
;
1219 info
->start_seek
= jiffies
;
1221 ide_cd_prepare_seek_request(drive
, rq
);
1224 fn
= cdrom_start_rw_cont
;
1226 if (cdrom_start_rw(drive
, rq
) == ide_stopped
)
1229 if (ide_cd_prepare_rw_request(drive
, rq
) == ide_stopped
)
1232 info
->last_block
= block
;
1233 } else if (blk_sense_request(rq
) || blk_pc_request(rq
) ||
1234 rq
->cmd_type
== REQ_TYPE_ATA_PC
) {
1235 xferlen
= rq
->data_len
;
1236 fn
= cdrom_do_newpc_cont
;
1239 rq
->timeout
= ATAPI_WAIT_PC
;
1241 cdrom_do_block_pc(drive
, rq
);
1242 } else if (blk_special_request(rq
)) {
1243 /* right now this can only be a reset... */
1244 cdrom_end_request(drive
, 1);
1247 blk_dump_rq_flags(rq
, "ide-cd bad flags");
1248 cdrom_end_request(drive
, 0);
1252 return cdrom_start_packet_command(drive
, xferlen
, fn
);
1258 * Routines which queue packet commands take as a final argument a pointer to a
1259 * request_sense struct. If execution of the command results in an error with a
1260 * CHECK CONDITION status, this structure will be filled with the results of the
1261 * subsequent request sense command. The pointer can also be NULL, in which case
1262 * no sense information is returned.
1264 static void msf_from_bcd(struct atapi_msf
*msf
)
1266 msf
->minute
= bcd2bin(msf
->minute
);
1267 msf
->second
= bcd2bin(msf
->second
);
1268 msf
->frame
= bcd2bin(msf
->frame
);
1271 int cdrom_check_status(ide_drive_t
*drive
, struct request_sense
*sense
)
1273 struct cdrom_info
*info
= drive
->driver_data
;
1274 struct cdrom_device_info
*cdi
= &info
->devinfo
;
1275 unsigned char cmd
[BLK_MAX_CDB
];
1277 memset(cmd
, 0, BLK_MAX_CDB
);
1278 cmd
[0] = GPCMD_TEST_UNIT_READY
;
1281 * Sanyo 3 CD changer uses byte 7 of TEST_UNIT_READY to switch CDs
1282 * instead of supporting the LOAD_UNLOAD opcode.
1284 cmd
[7] = cdi
->sanyo_slot
% 3;
1286 return ide_cd_queue_pc(drive
, cmd
, 0, NULL
, NULL
, sense
, 0, REQ_QUIET
);
1289 static int cdrom_read_capacity(ide_drive_t
*drive
, unsigned long *capacity
,
1290 unsigned long *sectors_per_frame
,
1291 struct request_sense
*sense
)
1299 unsigned char cmd
[BLK_MAX_CDB
];
1300 unsigned len
= sizeof(capbuf
);
1303 memset(cmd
, 0, BLK_MAX_CDB
);
1304 cmd
[0] = GPCMD_READ_CDVD_CAPACITY
;
1306 stat
= ide_cd_queue_pc(drive
, cmd
, 0, &capbuf
, &len
, sense
, 0,
1312 * Sanity check the given block size
1314 blocklen
= be32_to_cpu(capbuf
.blocklen
);
1322 printk(KERN_ERR
"%s: weird block size %u\n",
1323 drive
->name
, blocklen
);
1324 printk(KERN_ERR
"%s: default to 2kb block size\n",
1330 *capacity
= 1 + be32_to_cpu(capbuf
.lba
);
1331 *sectors_per_frame
= blocklen
>> SECTOR_BITS
;
1335 static int cdrom_read_tocentry(ide_drive_t
*drive
, int trackno
, int msf_flag
,
1336 int format
, char *buf
, int buflen
,
1337 struct request_sense
*sense
)
1339 unsigned char cmd
[BLK_MAX_CDB
];
1341 memset(cmd
, 0, BLK_MAX_CDB
);
1343 cmd
[0] = GPCMD_READ_TOC_PMA_ATIP
;
1345 cmd
[7] = (buflen
>> 8);
1346 cmd
[8] = (buflen
& 0xff);
1347 cmd
[9] = (format
<< 6);
1352 return ide_cd_queue_pc(drive
, cmd
, 0, buf
, &buflen
, sense
, 0, REQ_QUIET
);
1355 /* Try to read the entire TOC for the disk into our internal buffer. */
1356 int ide_cd_read_toc(ide_drive_t
*drive
, struct request_sense
*sense
)
1358 int stat
, ntracks
, i
;
1359 struct cdrom_info
*info
= drive
->driver_data
;
1360 struct cdrom_device_info
*cdi
= &info
->devinfo
;
1361 struct atapi_toc
*toc
= info
->toc
;
1363 struct atapi_toc_header hdr
;
1364 struct atapi_toc_entry ent
;
1367 unsigned long sectors_per_frame
= SECTORS_PER_FRAME
;
1370 /* try to allocate space */
1371 toc
= kmalloc(sizeof(struct atapi_toc
), GFP_KERNEL
);
1373 printk(KERN_ERR
"%s: No cdrom TOC buffer!\n",
1381 * Check to see if the existing data is still valid. If it is,
1384 (void) cdrom_check_status(drive
, sense
);
1386 if (drive
->atapi_flags
& IDE_AFLAG_TOC_VALID
)
1389 /* try to get the total cdrom capacity and sector size */
1390 stat
= cdrom_read_capacity(drive
, &toc
->capacity
, §ors_per_frame
,
1393 toc
->capacity
= 0x1fffff;
1395 set_capacity(info
->disk
, toc
->capacity
* sectors_per_frame
);
1396 /* save a private copy of the TOC capacity for error handling */
1397 drive
->probed_capacity
= toc
->capacity
* sectors_per_frame
;
1399 blk_queue_hardsect_size(drive
->queue
,
1400 sectors_per_frame
<< SECTOR_BITS
);
1402 /* first read just the header, so we know how long the TOC is */
1403 stat
= cdrom_read_tocentry(drive
, 0, 1, 0, (char *) &toc
->hdr
,
1404 sizeof(struct atapi_toc_header
), sense
);
1408 if (drive
->atapi_flags
& IDE_AFLAG_TOCTRACKS_AS_BCD
) {
1409 toc
->hdr
.first_track
= bcd2bin(toc
->hdr
.first_track
);
1410 toc
->hdr
.last_track
= bcd2bin(toc
->hdr
.last_track
);
1413 ntracks
= toc
->hdr
.last_track
- toc
->hdr
.first_track
+ 1;
1416 if (ntracks
> MAX_TRACKS
)
1417 ntracks
= MAX_TRACKS
;
1419 /* now read the whole schmeer */
1420 stat
= cdrom_read_tocentry(drive
, toc
->hdr
.first_track
, 1, 0,
1422 sizeof(struct atapi_toc_header
) +
1424 sizeof(struct atapi_toc_entry
), sense
);
1426 if (stat
&& toc
->hdr
.first_track
> 1) {
1428 * Cds with CDI tracks only don't have any TOC entries, despite
1429 * of this the returned values are
1430 * first_track == last_track = number of CDI tracks + 1,
1431 * so that this case is indistinguishable from the same layout
1432 * plus an additional audio track. If we get an error for the
1433 * regular case, we assume a CDI without additional audio
1434 * tracks. In this case the readable TOC is empty (CDI tracks
1435 * are not included) and only holds the Leadout entry.
1440 stat
= cdrom_read_tocentry(drive
, CDROM_LEADOUT
, 1, 0,
1442 sizeof(struct atapi_toc_header
) +
1444 sizeof(struct atapi_toc_entry
),
1449 if (drive
->atapi_flags
& IDE_AFLAG_TOCTRACKS_AS_BCD
) {
1450 toc
->hdr
.first_track
= (u8
)bin2bcd(CDROM_LEADOUT
);
1451 toc
->hdr
.last_track
= (u8
)bin2bcd(CDROM_LEADOUT
);
1453 toc
->hdr
.first_track
= CDROM_LEADOUT
;
1454 toc
->hdr
.last_track
= CDROM_LEADOUT
;
1461 toc
->hdr
.toc_length
= be16_to_cpu(toc
->hdr
.toc_length
);
1463 if (drive
->atapi_flags
& IDE_AFLAG_TOCTRACKS_AS_BCD
) {
1464 toc
->hdr
.first_track
= bcd2bin(toc
->hdr
.first_track
);
1465 toc
->hdr
.last_track
= bcd2bin(toc
->hdr
.last_track
);
1468 for (i
= 0; i
<= ntracks
; i
++) {
1469 if (drive
->atapi_flags
& IDE_AFLAG_TOCADDR_AS_BCD
) {
1470 if (drive
->atapi_flags
& IDE_AFLAG_TOCTRACKS_AS_BCD
)
1471 toc
->ent
[i
].track
= bcd2bin(toc
->ent
[i
].track
);
1472 msf_from_bcd(&toc
->ent
[i
].addr
.msf
);
1474 toc
->ent
[i
].addr
.lba
= msf_to_lba(toc
->ent
[i
].addr
.msf
.minute
,
1475 toc
->ent
[i
].addr
.msf
.second
,
1476 toc
->ent
[i
].addr
.msf
.frame
);
1479 if (toc
->hdr
.first_track
!= CDROM_LEADOUT
) {
1480 /* read the multisession information */
1481 stat
= cdrom_read_tocentry(drive
, 0, 0, 1, (char *)&ms_tmp
,
1482 sizeof(ms_tmp
), sense
);
1486 toc
->last_session_lba
= be32_to_cpu(ms_tmp
.ent
.addr
.lba
);
1488 ms_tmp
.hdr
.last_track
= CDROM_LEADOUT
;
1489 ms_tmp
.hdr
.first_track
= ms_tmp
.hdr
.last_track
;
1490 toc
->last_session_lba
= msf_to_lba(0, 2, 0); /* 0m 2s 0f */
1493 if (drive
->atapi_flags
& IDE_AFLAG_TOCADDR_AS_BCD
) {
1494 /* re-read multisession information using MSF format */
1495 stat
= cdrom_read_tocentry(drive
, 0, 1, 1, (char *)&ms_tmp
,
1496 sizeof(ms_tmp
), sense
);
1500 msf_from_bcd(&ms_tmp
.ent
.addr
.msf
);
1501 toc
->last_session_lba
= msf_to_lba(ms_tmp
.ent
.addr
.msf
.minute
,
1502 ms_tmp
.ent
.addr
.msf
.second
,
1503 ms_tmp
.ent
.addr
.msf
.frame
);
1506 toc
->xa_flag
= (ms_tmp
.hdr
.first_track
!= ms_tmp
.hdr
.last_track
);
1508 /* now try to get the total cdrom capacity */
1509 stat
= cdrom_get_last_written(cdi
, &last_written
);
1510 if (!stat
&& (last_written
> toc
->capacity
)) {
1511 toc
->capacity
= last_written
;
1512 set_capacity(info
->disk
, toc
->capacity
* sectors_per_frame
);
1513 drive
->probed_capacity
= toc
->capacity
* sectors_per_frame
;
1516 /* Remember that we've read this stuff. */
1517 drive
->atapi_flags
|= IDE_AFLAG_TOC_VALID
;
1522 int ide_cdrom_get_capabilities(ide_drive_t
*drive
, u8
*buf
)
1524 struct cdrom_info
*info
= drive
->driver_data
;
1525 struct cdrom_device_info
*cdi
= &info
->devinfo
;
1526 struct packet_command cgc
;
1527 int stat
, attempts
= 3, size
= ATAPI_CAPABILITIES_PAGE_SIZE
;
1529 if ((drive
->atapi_flags
& IDE_AFLAG_FULL_CAPS_PAGE
) == 0)
1530 size
-= ATAPI_CAPABILITIES_PAGE_PAD_SIZE
;
1532 init_cdrom_command(&cgc
, buf
, size
, CGC_DATA_UNKNOWN
);
1534 /* we seem to get stat=0x01,err=0x00 the first time (??) */
1535 stat
= cdrom_mode_sense(cdi
, &cgc
, GPMODE_CAPABILITIES_PAGE
, 0);
1538 } while (--attempts
);
1542 void ide_cdrom_update_speed(ide_drive_t
*drive
, u8
*buf
)
1544 struct cdrom_info
*cd
= drive
->driver_data
;
1545 u16 curspeed
, maxspeed
;
1547 if (drive
->atapi_flags
& IDE_AFLAG_LE_SPEED_FIELDS
) {
1548 curspeed
= le16_to_cpup((__le16
*)&buf
[8 + 14]);
1549 maxspeed
= le16_to_cpup((__le16
*)&buf
[8 + 8]);
1551 curspeed
= be16_to_cpup((__be16
*)&buf
[8 + 14]);
1552 maxspeed
= be16_to_cpup((__be16
*)&buf
[8 + 8]);
1555 cd
->current_speed
= (curspeed
+ (176/2)) / 176;
1556 cd
->max_speed
= (maxspeed
+ (176/2)) / 176;
1559 #define IDE_CD_CAPABILITIES \
1560 (CDC_CLOSE_TRAY | CDC_OPEN_TRAY | CDC_LOCK | CDC_SELECT_SPEED | \
1561 CDC_SELECT_DISC | CDC_MULTI_SESSION | CDC_MCN | CDC_MEDIA_CHANGED | \
1562 CDC_PLAY_AUDIO | CDC_RESET | CDC_DRIVE_STATUS | CDC_CD_R | \
1563 CDC_CD_RW | CDC_DVD | CDC_DVD_R | CDC_DVD_RAM | CDC_GENERIC_PACKET | \
1564 CDC_MO_DRIVE | CDC_MRW | CDC_MRW_W | CDC_RAM)
1566 static struct cdrom_device_ops ide_cdrom_dops
= {
1567 .open
= ide_cdrom_open_real
,
1568 .release
= ide_cdrom_release_real
,
1569 .drive_status
= ide_cdrom_drive_status
,
1570 .media_changed
= ide_cdrom_check_media_change_real
,
1571 .tray_move
= ide_cdrom_tray_move
,
1572 .lock_door
= ide_cdrom_lock_door
,
1573 .select_speed
= ide_cdrom_select_speed
,
1574 .get_last_session
= ide_cdrom_get_last_session
,
1575 .get_mcn
= ide_cdrom_get_mcn
,
1576 .reset
= ide_cdrom_reset
,
1577 .audio_ioctl
= ide_cdrom_audio_ioctl
,
1578 .capability
= IDE_CD_CAPABILITIES
,
1579 .generic_packet
= ide_cdrom_packet
,
1582 static int ide_cdrom_register(ide_drive_t
*drive
, int nslots
)
1584 struct cdrom_info
*info
= drive
->driver_data
;
1585 struct cdrom_device_info
*devinfo
= &info
->devinfo
;
1587 devinfo
->ops
= &ide_cdrom_dops
;
1588 devinfo
->speed
= info
->current_speed
;
1589 devinfo
->capacity
= nslots
;
1590 devinfo
->handle
= drive
;
1591 strcpy(devinfo
->name
, drive
->name
);
1593 if (drive
->atapi_flags
& IDE_AFLAG_NO_SPEED_SELECT
)
1594 devinfo
->mask
|= CDC_SELECT_SPEED
;
1596 devinfo
->disk
= info
->disk
;
1597 return register_cdrom(devinfo
);
1600 static int ide_cdrom_probe_capabilities(ide_drive_t
*drive
)
1602 struct cdrom_info
*cd
= drive
->driver_data
;
1603 struct cdrom_device_info
*cdi
= &cd
->devinfo
;
1604 u8 buf
[ATAPI_CAPABILITIES_PAGE_SIZE
];
1605 mechtype_t mechtype
;
1608 cdi
->mask
= (CDC_CD_R
| CDC_CD_RW
| CDC_DVD
| CDC_DVD_R
|
1609 CDC_DVD_RAM
| CDC_SELECT_DISC
| CDC_PLAY_AUDIO
|
1610 CDC_MO_DRIVE
| CDC_RAM
);
1612 if (drive
->media
== ide_optical
) {
1613 cdi
->mask
&= ~(CDC_MO_DRIVE
| CDC_RAM
);
1614 printk(KERN_ERR
"%s: ATAPI magneto-optical drive\n",
1619 if (drive
->atapi_flags
& IDE_AFLAG_PRE_ATAPI12
) {
1620 drive
->atapi_flags
&= ~IDE_AFLAG_NO_EJECT
;
1621 cdi
->mask
&= ~CDC_PLAY_AUDIO
;
1626 * We have to cheat a little here. the packet will eventually be queued
1627 * with ide_cdrom_packet(), which extracts the drive from cdi->handle.
1628 * Since this device hasn't been registered with the Uniform layer yet,
1629 * it can't do this. Same goes for cdi->ops.
1631 cdi
->handle
= drive
;
1632 cdi
->ops
= &ide_cdrom_dops
;
1634 if (ide_cdrom_get_capabilities(drive
, buf
))
1637 if ((buf
[8 + 6] & 0x01) == 0)
1638 drive
->atapi_flags
|= IDE_AFLAG_NO_DOORLOCK
;
1639 if (buf
[8 + 6] & 0x08)
1640 drive
->atapi_flags
&= ~IDE_AFLAG_NO_EJECT
;
1641 if (buf
[8 + 3] & 0x01)
1642 cdi
->mask
&= ~CDC_CD_R
;
1643 if (buf
[8 + 3] & 0x02)
1644 cdi
->mask
&= ~(CDC_CD_RW
| CDC_RAM
);
1645 if (buf
[8 + 2] & 0x38)
1646 cdi
->mask
&= ~CDC_DVD
;
1647 if (buf
[8 + 3] & 0x20)
1648 cdi
->mask
&= ~(CDC_DVD_RAM
| CDC_RAM
);
1649 if (buf
[8 + 3] & 0x10)
1650 cdi
->mask
&= ~CDC_DVD_R
;
1651 if ((buf
[8 + 4] & 0x01) || (drive
->atapi_flags
& IDE_AFLAG_PLAY_AUDIO_OK
))
1652 cdi
->mask
&= ~CDC_PLAY_AUDIO
;
1654 mechtype
= buf
[8 + 6] >> 5;
1655 if (mechtype
== mechtype_caddy
||
1656 mechtype
== mechtype_popup
||
1657 (drive
->atapi_flags
& IDE_AFLAG_NO_AUTOCLOSE
))
1658 cdi
->mask
|= CDC_CLOSE_TRAY
;
1660 if (cdi
->sanyo_slot
> 0) {
1661 cdi
->mask
&= ~CDC_SELECT_DISC
;
1663 } else if (mechtype
== mechtype_individual_changer
||
1664 mechtype
== mechtype_cartridge_changer
) {
1665 nslots
= cdrom_number_of_slots(cdi
);
1667 cdi
->mask
&= ~CDC_SELECT_DISC
;
1670 ide_cdrom_update_speed(drive
, buf
);
1672 printk(KERN_INFO
"%s: ATAPI", drive
->name
);
1674 /* don't print speed if the drive reported 0 */
1676 printk(KERN_CONT
" %dX", cd
->max_speed
);
1678 printk(KERN_CONT
" %s", (cdi
->mask
& CDC_DVD
) ? "CD-ROM" : "DVD-ROM");
1680 if ((cdi
->mask
& CDC_DVD_R
) == 0 || (cdi
->mask
& CDC_DVD_RAM
) == 0)
1681 printk(KERN_CONT
" DVD%s%s",
1682 (cdi
->mask
& CDC_DVD_R
) ? "" : "-R",
1683 (cdi
->mask
& CDC_DVD_RAM
) ? "" : "-RAM");
1685 if ((cdi
->mask
& CDC_CD_R
) == 0 || (cdi
->mask
& CDC_CD_RW
) == 0)
1686 printk(KERN_CONT
" CD%s%s",
1687 (cdi
->mask
& CDC_CD_R
) ? "" : "-R",
1688 (cdi
->mask
& CDC_CD_RW
) ? "" : "/RW");
1690 if ((cdi
->mask
& CDC_SELECT_DISC
) == 0)
1691 printk(KERN_CONT
" changer w/%d slots", nslots
);
1693 printk(KERN_CONT
" drive");
1695 printk(KERN_CONT
", %dkB Cache\n", be16_to_cpup((__be16
*)&buf
[8 + 12]));
1700 /* standard prep_rq_fn that builds 10 byte cmds */
1701 static int ide_cdrom_prep_fs(struct request_queue
*q
, struct request
*rq
)
1703 int hard_sect
= queue_hardsect_size(q
);
1704 long block
= (long)rq
->hard_sector
/ (hard_sect
>> 9);
1705 unsigned long blocks
= rq
->hard_nr_sectors
/ (hard_sect
>> 9);
1707 memset(rq
->cmd
, 0, BLK_MAX_CDB
);
1709 if (rq_data_dir(rq
) == READ
)
1710 rq
->cmd
[0] = GPCMD_READ_10
;
1712 rq
->cmd
[0] = GPCMD_WRITE_10
;
1717 rq
->cmd
[2] = (block
>> 24) & 0xff;
1718 rq
->cmd
[3] = (block
>> 16) & 0xff;
1719 rq
->cmd
[4] = (block
>> 8) & 0xff;
1720 rq
->cmd
[5] = block
& 0xff;
1723 * and transfer length
1725 rq
->cmd
[7] = (blocks
>> 8) & 0xff;
1726 rq
->cmd
[8] = blocks
& 0xff;
1732 * Most of the SCSI commands are supported directly by ATAPI devices.
1733 * This transform handles the few exceptions.
1735 static int ide_cdrom_prep_pc(struct request
*rq
)
1739 /* transform 6-byte read/write commands to the 10-byte version */
1740 if (c
[0] == READ_6
|| c
[0] == WRITE_6
) {
1747 c
[0] += (READ_10
- READ_6
);
1753 * it's silly to pretend we understand 6-byte sense commands, just
1754 * reject with ILLEGAL_REQUEST and the caller should take the
1755 * appropriate action
1757 if (c
[0] == MODE_SENSE
|| c
[0] == MODE_SELECT
) {
1758 rq
->errors
= ILLEGAL_REQUEST
;
1759 return BLKPREP_KILL
;
1765 static int ide_cdrom_prep_fn(struct request_queue
*q
, struct request
*rq
)
1767 if (blk_fs_request(rq
))
1768 return ide_cdrom_prep_fs(q
, rq
);
1769 else if (blk_pc_request(rq
))
1770 return ide_cdrom_prep_pc(rq
);
1775 struct cd_list_entry
{
1776 const char *id_model
;
1777 const char *id_firmware
;
1778 unsigned int cd_flags
;
1781 #ifdef CONFIG_IDE_PROC_FS
1782 static sector_t
ide_cdrom_capacity(ide_drive_t
*drive
)
1784 unsigned long capacity
, sectors_per_frame
;
1786 if (cdrom_read_capacity(drive
, &capacity
, §ors_per_frame
, NULL
))
1789 return capacity
* sectors_per_frame
;
1792 static int proc_idecd_read_capacity(char *page
, char **start
, off_t off
,
1793 int count
, int *eof
, void *data
)
1795 ide_drive_t
*drive
= data
;
1798 len
= sprintf(page
, "%llu\n", (long long)ide_cdrom_capacity(drive
));
1799 PROC_IDE_READ_RETURN(page
, start
, off
, count
, eof
, len
);
1802 static ide_proc_entry_t idecd_proc
[] = {
1803 { "capacity", S_IFREG
|S_IRUGO
, proc_idecd_read_capacity
, NULL
},
1804 { NULL
, 0, NULL
, NULL
}
1807 ide_devset_rw_flag(dsc_overlap
, IDE_DFLAG_DSC_OVERLAP
);
1809 static const struct ide_proc_devset idecd_settings
[] = {
1810 IDE_PROC_DEVSET(dsc_overlap
, 0, 1),
1815 static const struct cd_list_entry ide_cd_quirks_list
[] = {
1816 /* Limit transfer size per interrupt. */
1817 { "SAMSUNG CD-ROM SCR-2430", NULL
, IDE_AFLAG_LIMIT_NFRAMES
},
1818 { "SAMSUNG CD-ROM SCR-2432", NULL
, IDE_AFLAG_LIMIT_NFRAMES
},
1819 /* SCR-3231 doesn't support the SET_CD_SPEED command. */
1820 { "SAMSUNG CD-ROM SCR-3231", NULL
, IDE_AFLAG_NO_SPEED_SELECT
},
1821 /* Old NEC260 (not R) was released before ATAPI 1.2 spec. */
1822 { "NEC CD-ROM DRIVE:260", "1.01", IDE_AFLAG_TOCADDR_AS_BCD
|
1823 IDE_AFLAG_PRE_ATAPI12
, },
1824 /* Vertos 300, some versions of this drive like to talk BCD. */
1825 { "V003S0DS", NULL
, IDE_AFLAG_VERTOS_300_SSD
, },
1826 /* Vertos 600 ESD. */
1827 { "V006E0DS", NULL
, IDE_AFLAG_VERTOS_600_ESD
, },
1829 * Sanyo 3 CD changer uses a non-standard command for CD changing
1830 * (by default standard ATAPI support for CD changers is used).
1832 { "CD-ROM CDR-C3 G", NULL
, IDE_AFLAG_SANYO_3CD
},
1833 { "CD-ROM CDR-C3G", NULL
, IDE_AFLAG_SANYO_3CD
},
1834 { "CD-ROM CDR_C36", NULL
, IDE_AFLAG_SANYO_3CD
},
1835 /* Stingray 8X CD-ROM. */
1836 { "STINGRAY 8422 IDE 8X CD-ROM 7-27-95", NULL
, IDE_AFLAG_PRE_ATAPI12
},
1838 * ACER 50X CD-ROM and WPI 32X CD-ROM require the full spec length
1839 * mode sense page capabilities size, but older drives break.
1841 { "ATAPI CD ROM DRIVE 50X MAX", NULL
, IDE_AFLAG_FULL_CAPS_PAGE
},
1842 { "WPI CDS-32X", NULL
, IDE_AFLAG_FULL_CAPS_PAGE
},
1843 /* ACER/AOpen 24X CD-ROM has the speed fields byte-swapped. */
1844 { "", "241N", IDE_AFLAG_LE_SPEED_FIELDS
},
1846 * Some drives used by Apple don't advertise audio play
1847 * but they do support reading TOC & audio datas.
1849 { "MATSHITADVD-ROM SR-8187", NULL
, IDE_AFLAG_PLAY_AUDIO_OK
},
1850 { "MATSHITADVD-ROM SR-8186", NULL
, IDE_AFLAG_PLAY_AUDIO_OK
},
1851 { "MATSHITADVD-ROM SR-8176", NULL
, IDE_AFLAG_PLAY_AUDIO_OK
},
1852 { "MATSHITADVD-ROM SR-8174", NULL
, IDE_AFLAG_PLAY_AUDIO_OK
},
1853 { "Optiarc DVD RW AD-5200A", NULL
, IDE_AFLAG_PLAY_AUDIO_OK
},
1854 { "Optiarc DVD RW AD-7200A", NULL
, IDE_AFLAG_PLAY_AUDIO_OK
},
1855 { "Optiarc DVD RW AD-7543A", NULL
, IDE_AFLAG_NO_AUTOCLOSE
},
1859 static unsigned int ide_cd_flags(u16
*id
)
1861 const struct cd_list_entry
*cle
= ide_cd_quirks_list
;
1863 while (cle
->id_model
) {
1864 if (strcmp(cle
->id_model
, (char *)&id
[ATA_ID_PROD
]) == 0 &&
1865 (cle
->id_firmware
== NULL
||
1866 strstr((char *)&id
[ATA_ID_FW_REV
], cle
->id_firmware
)))
1867 return cle
->cd_flags
;
1874 static int ide_cdrom_setup(ide_drive_t
*drive
)
1876 struct cdrom_info
*cd
= drive
->driver_data
;
1877 struct cdrom_device_info
*cdi
= &cd
->devinfo
;
1878 u16
*id
= drive
->id
;
1879 char *fw_rev
= (char *)&id
[ATA_ID_FW_REV
];
1882 blk_queue_prep_rq(drive
->queue
, ide_cdrom_prep_fn
);
1883 blk_queue_dma_alignment(drive
->queue
, 31);
1884 blk_queue_update_dma_pad(drive
->queue
, 15);
1885 drive
->queue
->unplug_delay
= (1 * HZ
) / 1000;
1886 if (!drive
->queue
->unplug_delay
)
1887 drive
->queue
->unplug_delay
= 1;
1889 drive
->special
.all
= 0;
1891 drive
->atapi_flags
= IDE_AFLAG_MEDIA_CHANGED
| IDE_AFLAG_NO_EJECT
|
1894 if ((id
[ATA_ID_CONFIG
] & 0x0060) == 0x20)
1895 drive
->atapi_flags
|= IDE_AFLAG_DRQ_INTERRUPT
;
1897 if ((drive
->atapi_flags
& IDE_AFLAG_VERTOS_300_SSD
) &&
1898 fw_rev
[4] == '1' && fw_rev
[6] <= '2')
1899 drive
->atapi_flags
|= (IDE_AFLAG_TOCTRACKS_AS_BCD
|
1900 IDE_AFLAG_TOCADDR_AS_BCD
);
1901 else if ((drive
->atapi_flags
& IDE_AFLAG_VERTOS_600_ESD
) &&
1902 fw_rev
[4] == '1' && fw_rev
[6] <= '2')
1903 drive
->atapi_flags
|= IDE_AFLAG_TOCTRACKS_AS_BCD
;
1904 else if (drive
->atapi_flags
& IDE_AFLAG_SANYO_3CD
)
1905 /* 3 => use CD in slot 0 */
1906 cdi
->sanyo_slot
= 3;
1908 nslots
= ide_cdrom_probe_capabilities(drive
);
1910 /* set correct block size */
1911 blk_queue_hardsect_size(drive
->queue
, CD_FRAMESIZE
);
1913 if (drive
->next
!= drive
)
1914 drive
->dev_flags
|= IDE_DFLAG_DSC_OVERLAP
;
1916 drive
->dev_flags
&= ~IDE_DFLAG_DSC_OVERLAP
;
1918 if (ide_cdrom_register(drive
, nslots
)) {
1919 printk(KERN_ERR
"%s: %s failed to register device with the"
1920 " cdrom driver.\n", drive
->name
, __func__
);
1921 cd
->devinfo
.handle
= NULL
;
1925 ide_proc_register_driver(drive
, cd
->driver
);
1929 static void ide_cd_remove(ide_drive_t
*drive
)
1931 struct cdrom_info
*info
= drive
->driver_data
;
1933 ide_proc_unregister_driver(drive
, info
->driver
);
1935 del_gendisk(info
->disk
);
1940 static void ide_cd_release(struct kref
*kref
)
1942 struct cdrom_info
*info
= to_ide_drv(kref
, cdrom_info
);
1943 struct cdrom_device_info
*devinfo
= &info
->devinfo
;
1944 ide_drive_t
*drive
= info
->drive
;
1945 struct gendisk
*g
= info
->disk
;
1948 if (devinfo
->handle
== drive
)
1949 unregister_cdrom(devinfo
);
1950 drive
->dev_flags
&= ~IDE_DFLAG_DSC_OVERLAP
;
1951 drive
->driver_data
= NULL
;
1952 blk_queue_prep_rq(drive
->queue
, NULL
);
1953 g
->private_data
= NULL
;
1958 static int ide_cd_probe(ide_drive_t
*);
1960 static ide_driver_t ide_cdrom_driver
= {
1962 .owner
= THIS_MODULE
,
1963 .name
= "ide-cdrom",
1964 .bus
= &ide_bus_type
,
1966 .probe
= ide_cd_probe
,
1967 .remove
= ide_cd_remove
,
1968 .version
= IDECD_VERSION
,
1969 .do_request
= ide_cd_do_request
,
1970 .end_request
= ide_end_request
,
1971 .error
= __ide_error
,
1972 #ifdef CONFIG_IDE_PROC_FS
1974 .settings
= idecd_settings
,
1978 static int idecd_open(struct inode
*inode
, struct file
*file
)
1980 struct gendisk
*disk
= inode
->i_bdev
->bd_disk
;
1981 struct cdrom_info
*info
;
1984 info
= ide_cd_get(disk
);
1988 rc
= cdrom_open(&info
->devinfo
, inode
, file
);
1996 static int idecd_release(struct inode
*inode
, struct file
*file
)
1998 struct gendisk
*disk
= inode
->i_bdev
->bd_disk
;
1999 struct cdrom_info
*info
= ide_drv_g(disk
, cdrom_info
);
2001 cdrom_release(&info
->devinfo
, file
);
2008 static int idecd_set_spindown(struct cdrom_device_info
*cdi
, unsigned long arg
)
2010 struct packet_command cgc
;
2015 if (copy_from_user(&spindown
, (void __user
*)arg
, sizeof(char)))
2018 init_cdrom_command(&cgc
, buffer
, sizeof(buffer
), CGC_DATA_UNKNOWN
);
2020 stat
= cdrom_mode_sense(cdi
, &cgc
, GPMODE_CDROM_PAGE
, 0);
2024 buffer
[11] = (buffer
[11] & 0xf0) | (spindown
& 0x0f);
2025 return cdrom_mode_select(cdi
, &cgc
);
2028 static int idecd_get_spindown(struct cdrom_device_info
*cdi
, unsigned long arg
)
2030 struct packet_command cgc
;
2035 init_cdrom_command(&cgc
, buffer
, sizeof(buffer
), CGC_DATA_UNKNOWN
);
2037 stat
= cdrom_mode_sense(cdi
, &cgc
, GPMODE_CDROM_PAGE
, 0);
2041 spindown
= buffer
[11] & 0x0f;
2042 if (copy_to_user((void __user
*)arg
, &spindown
, sizeof(char)))
2047 static int idecd_ioctl(struct inode
*inode
, struct file
*file
,
2048 unsigned int cmd
, unsigned long arg
)
2050 struct block_device
*bdev
= inode
->i_bdev
;
2051 struct cdrom_info
*info
= ide_drv_g(bdev
->bd_disk
, cdrom_info
);
2055 case CDROMSETSPINDOWN
:
2056 return idecd_set_spindown(&info
->devinfo
, arg
);
2057 case CDROMGETSPINDOWN
:
2058 return idecd_get_spindown(&info
->devinfo
, arg
);
2063 err
= generic_ide_ioctl(info
->drive
, file
, bdev
, cmd
, arg
);
2065 err
= cdrom_ioctl(file
, &info
->devinfo
, inode
, cmd
, arg
);
2070 static int idecd_media_changed(struct gendisk
*disk
)
2072 struct cdrom_info
*info
= ide_drv_g(disk
, cdrom_info
);
2073 return cdrom_media_changed(&info
->devinfo
);
2076 static int idecd_revalidate_disk(struct gendisk
*disk
)
2078 struct cdrom_info
*info
= ide_drv_g(disk
, cdrom_info
);
2079 struct request_sense sense
;
2081 ide_cd_read_toc(info
->drive
, &sense
);
2086 static struct block_device_operations idecd_ops
= {
2087 .owner
= THIS_MODULE
,
2089 .release
= idecd_release
,
2090 .ioctl
= idecd_ioctl
,
2091 .media_changed
= idecd_media_changed
,
2092 .revalidate_disk
= idecd_revalidate_disk
2095 /* module options */
2096 static char *ignore
;
2098 module_param(ignore
, charp
, 0400);
2099 MODULE_DESCRIPTION("ATAPI CD-ROM Driver");
2101 static int ide_cd_probe(ide_drive_t
*drive
)
2103 struct cdrom_info
*info
;
2105 struct request_sense sense
;
2107 if (!strstr("ide-cdrom", drive
->driver_req
))
2110 if (drive
->media
!= ide_cdrom
&& drive
->media
!= ide_optical
)
2113 /* skip drives that we were told to ignore */
2114 if (ignore
!= NULL
) {
2115 if (strstr(ignore
, drive
->name
)) {
2116 printk(KERN_INFO
"ide-cd: ignoring drive %s\n",
2121 info
= kzalloc(sizeof(struct cdrom_info
), GFP_KERNEL
);
2123 printk(KERN_ERR
"%s: Can't allocate a cdrom structure\n",
2128 g
= alloc_disk(1 << PARTN_BITS
);
2132 ide_init_disk(g
, drive
);
2134 kref_init(&info
->kref
);
2136 info
->drive
= drive
;
2137 info
->driver
= &ide_cdrom_driver
;
2140 g
->private_data
= &info
->driver
;
2142 drive
->driver_data
= info
;
2145 g
->driverfs_dev
= &drive
->gendev
;
2146 g
->flags
= GENHD_FL_CD
| GENHD_FL_REMOVABLE
;
2147 if (ide_cdrom_setup(drive
)) {
2148 ide_cd_release(&info
->kref
);
2152 ide_cd_read_toc(drive
, &sense
);
2153 g
->fops
= &idecd_ops
;
2154 g
->flags
|= GENHD_FL_REMOVABLE
;
2164 static void __exit
ide_cdrom_exit(void)
2166 driver_unregister(&ide_cdrom_driver
.gen_driver
);
2169 static int __init
ide_cdrom_init(void)
2171 return driver_register(&ide_cdrom_driver
.gen_driver
);
2174 MODULE_ALIAS("ide:*m-cdrom*");
2175 MODULE_ALIAS("ide-cd");
2176 module_init(ide_cdrom_init
);
2177 module_exit(ide_cdrom_exit
);
2178 MODULE_LICENSE("GPL");