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 #define to_ide_cd(obj) container_of(obj, struct cdrom_info, kref)
57 #define ide_cd_g(disk) \
58 container_of((disk)->private_data, struct cdrom_info, driver)
60 static struct cdrom_info
*ide_cd_get(struct gendisk
*disk
)
62 struct cdrom_info
*cd
= NULL
;
64 mutex_lock(&idecd_ref_mutex
);
68 mutex_unlock(&idecd_ref_mutex
);
72 static void ide_cd_release(struct kref
*);
74 static void ide_cd_put(struct cdrom_info
*cd
)
76 mutex_lock(&idecd_ref_mutex
);
77 kref_put(&cd
->kref
, ide_cd_release
);
78 mutex_unlock(&idecd_ref_mutex
);
82 * Generic packet command support and error handling routines.
85 /* Mark that we've seen a media change and invalidate our internal buffers. */
86 static void cdrom_saw_media_change(ide_drive_t
*drive
)
88 struct cdrom_info
*cd
= drive
->driver_data
;
90 cd
->cd_flags
|= IDE_CD_FLAG_MEDIA_CHANGED
;
91 cd
->cd_flags
&= ~IDE_CD_FLAG_TOC_VALID
;
94 static int cdrom_log_sense(ide_drive_t
*drive
, struct request
*rq
,
95 struct request_sense
*sense
)
99 if (!sense
|| !rq
|| (rq
->cmd_flags
& REQ_QUIET
))
102 switch (sense
->sense_key
) {
104 case RECOVERED_ERROR
:
108 * don't care about tray state messages for e.g. capacity
109 * commands or in-progress or becoming ready
111 if (sense
->asc
== 0x3a || sense
->asc
== 0x04)
115 case ILLEGAL_REQUEST
:
117 * don't log START_STOP unit with LoEj set, since we cannot
118 * reliably check if drive can auto-close
120 if (rq
->cmd
[0] == GPCMD_START_STOP_UNIT
&& sense
->asc
== 0x24)
126 * Make good and sure we've seen this potential media change.
127 * Some drives (i.e. Creative) fail to present the correct sense
128 * key in the error register.
130 cdrom_saw_media_change(drive
);
139 static void cdrom_analyze_sense_data(ide_drive_t
*drive
,
140 struct request
*failed_command
,
141 struct request_sense
*sense
)
143 unsigned long sector
;
144 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 bio_sectors
= bio_sectors(failed_command
->bio
);
179 if (drive
->queue
->hardsect_size
== 2048)
180 /* device sector size is 2K */
182 sector
&= ~(bio_sectors
- 1);
183 valid
= (sector
- failed_command
->sector
) << 9;
187 if (sector
< get_capacity(info
->disk
) &&
188 drive
->probed_capacity
- sector
< 4 * 75)
189 set_capacity(info
->disk
, sector
);
193 ide_cd_log_error(drive
->name
, failed_command
, sense
);
196 /* Initialize a ide-cd packet command request */
197 void ide_cd_init_rq(ide_drive_t
*drive
, struct request
*rq
)
199 struct cdrom_info
*cd
= drive
->driver_data
;
201 ide_init_drive_cmd(rq
);
202 rq
->cmd_type
= REQ_TYPE_ATA_PC
;
203 rq
->rq_disk
= cd
->disk
;
206 static void cdrom_queue_request_sense(ide_drive_t
*drive
, void *sense
,
207 struct request
*failed_command
)
209 struct cdrom_info
*info
= drive
->driver_data
;
210 struct request
*rq
= &info
->request_sense_request
;
213 sense
= &info
->sense_data
;
215 /* stuff the sense request in front of our current request */
216 ide_cd_init_rq(drive
, rq
);
219 rq
->cmd
[0] = GPCMD_REQUEST_SENSE
;
223 rq
->cmd_type
= REQ_TYPE_SENSE
;
225 /* NOTE! Save the failed command in "rq->buffer" */
226 rq
->buffer
= (void *) failed_command
;
228 (void) ide_do_drive_cmd(drive
, rq
, ide_preempt
);
231 static void cdrom_end_request(ide_drive_t
*drive
, int uptodate
)
233 struct request
*rq
= HWGROUP(drive
)->rq
;
234 int nsectors
= rq
->hard_cur_sectors
;
236 if (blk_sense_request(rq
) && uptodate
) {
238 * For REQ_TYPE_SENSE, "rq->buffer" points to the original
241 struct request
*failed
= (struct request
*) rq
->buffer
;
242 struct cdrom_info
*info
= drive
->driver_data
;
243 void *sense
= &info
->sense_data
;
248 sense
= failed
->sense
;
249 failed
->sense_len
= rq
->sense_len
;
251 cdrom_analyze_sense_data(drive
, failed
, sense
);
253 * now end the failed request
255 if (blk_fs_request(failed
)) {
256 if (ide_end_dequeued_request(drive
, failed
, 0,
257 failed
->hard_nr_sectors
))
260 spin_lock_irqsave(&ide_lock
, flags
);
261 if (__blk_end_request(failed
, -EIO
,
264 spin_unlock_irqrestore(&ide_lock
, flags
);
267 cdrom_analyze_sense_data(drive
, NULL
, sense
);
270 if (!rq
->current_nr_sectors
&& blk_fs_request(rq
))
272 /* make sure it's fully ended */
273 if (blk_pc_request(rq
))
274 nsectors
= (rq
->data_len
+ 511) >> 9;
278 ide_end_request(drive
, uptodate
, nsectors
);
281 static void ide_dump_status_no_sense(ide_drive_t
*drive
, const char *msg
, u8 st
)
285 ide_dump_status(drive
, msg
, st
);
290 * 0: if the request should be continued.
291 * 1: if the request was ended.
293 static int cdrom_decode_status(ide_drive_t
*drive
, int good_stat
, int *stat_ret
)
295 struct request
*rq
= HWGROUP(drive
)->rq
;
296 int stat
, err
, sense_key
;
298 /* check for errors */
299 stat
= ide_read_status(drive
);
304 if (OK_STAT(stat
, good_stat
, BAD_R_STAT
))
307 /* get the IDE error register */
308 err
= ide_read_error(drive
);
309 sense_key
= err
>> 4;
312 printk(KERN_ERR
"%s: missing rq in %s\n",
313 drive
->name
, __func__
);
317 if (blk_sense_request(rq
)) {
319 * We got an error trying to get sense info from the drive
320 * (probably while trying to recover from a former error).
323 rq
->cmd_flags
|= REQ_FAILED
;
324 cdrom_end_request(drive
, 0);
325 ide_error(drive
, "request sense failure", stat
);
328 } else if (blk_pc_request(rq
) || rq
->cmd_type
== REQ_TYPE_ATA_PC
) {
329 /* All other functions, except for READ. */
332 * if we have an error, pass back CHECK_CONDITION as the
335 if (blk_pc_request(rq
) && !rq
->errors
)
336 rq
->errors
= SAM_STAT_CHECK_CONDITION
;
338 /* check for tray open */
339 if (sense_key
== NOT_READY
) {
340 cdrom_saw_media_change(drive
);
341 } else if (sense_key
== UNIT_ATTENTION
) {
342 /* check for media change */
343 cdrom_saw_media_change(drive
);
345 } else if (sense_key
== ILLEGAL_REQUEST
&&
346 rq
->cmd
[0] == GPCMD_START_STOP_UNIT
) {
348 * Don't print error message for this condition--
349 * SFF8090i indicates that 5/24/00 is the correct
350 * response to a request to close the tray if the
351 * drive doesn't have that capability.
352 * cdrom_log_sense() knows this!
354 } else if (!(rq
->cmd_flags
& REQ_QUIET
)) {
355 /* otherwise, print an error */
356 ide_dump_status(drive
, "packet command error", stat
);
359 rq
->cmd_flags
|= REQ_FAILED
;
362 * instead of playing games with moving completions around,
363 * remove failed request completely and end it when the
364 * request sense has completed
368 } else if (blk_fs_request(rq
)) {
369 int do_end_request
= 0;
371 /* handle errors from READ and WRITE requests */
373 if (blk_noretry_request(rq
))
376 if (sense_key
== NOT_READY
) {
378 if (rq_data_dir(rq
) == READ
) {
379 cdrom_saw_media_change(drive
);
381 /* fail the request */
382 printk(KERN_ERR
"%s: tray open\n", drive
->name
);
385 struct cdrom_info
*info
= drive
->driver_data
;
388 * Allow the drive 5 seconds to recover, some
389 * devices will return this error while flushing
393 info
->write_timeout
= jiffies
+
394 ATAPI_WAIT_WRITE_BUSY
;
396 if (time_after(jiffies
, info
->write_timeout
))
402 * take a breather relying on the unplug
403 * timer to kick us again
405 spin_lock_irqsave(&ide_lock
, flags
);
406 blk_plug_device(drive
->queue
);
407 spin_unlock_irqrestore(&ide_lock
,
412 } else if (sense_key
== UNIT_ATTENTION
) {
414 cdrom_saw_media_change(drive
);
417 * Arrange to retry the request but be sure to give up
418 * if we've retried too many times.
420 if (++rq
->errors
> ERROR_MAX
)
422 } else if (sense_key
== ILLEGAL_REQUEST
||
423 sense_key
== DATA_PROTECT
) {
425 * No point in retrying after an illegal request or data
428 ide_dump_status_no_sense(drive
, "command error", stat
);
430 } else if (sense_key
== MEDIUM_ERROR
) {
432 * No point in re-trying a zillion times on a bad
433 * sector. If we got here the error is not correctable.
435 ide_dump_status_no_sense(drive
,
436 "media error (bad sector)",
439 } else if (sense_key
== BLANK_CHECK
) {
440 /* disk appears blank ?? */
441 ide_dump_status_no_sense(drive
, "media error (blank)",
444 } else if ((err
& ~ABRT_ERR
) != 0) {
445 /* go to the default handler for other errors */
446 ide_error(drive
, "cdrom_decode_status", stat
);
448 } else if ((++rq
->errors
> ERROR_MAX
)) {
449 /* we've racked up too many retries, abort */
454 * End a request through request sense analysis when we have
455 * sense data. We need this in order to perform end of media
462 * If we got a CHECK_CONDITION status, queue
463 * a request sense command.
466 cdrom_queue_request_sense(drive
, NULL
, NULL
);
468 blk_dump_rq_flags(rq
, "ide-cd: bad rq");
469 cdrom_end_request(drive
, 0);
472 /* retry, or handle the next request */
476 if (stat
& ERR_STAT
) {
479 spin_lock_irqsave(&ide_lock
, flags
);
480 blkdev_dequeue_request(rq
);
481 HWGROUP(drive
)->rq
= NULL
;
482 spin_unlock_irqrestore(&ide_lock
, flags
);
484 cdrom_queue_request_sense(drive
, rq
->sense
, rq
);
486 cdrom_end_request(drive
, 0);
491 static int cdrom_timer_expiry(ide_drive_t
*drive
)
493 struct request
*rq
= HWGROUP(drive
)->rq
;
494 unsigned long wait
= 0;
497 * Some commands are *slow* and normally take a long time to complete.
498 * Usually we can use the ATAPI "disconnect" to bypass this, but not all
499 * commands/drives support that. Let ide_timer_expiry keep polling us
502 switch (rq
->cmd
[0]) {
504 case GPCMD_FORMAT_UNIT
:
505 case GPCMD_RESERVE_RZONE_TRACK
:
506 case GPCMD_CLOSE_TRACK
:
507 case GPCMD_FLUSH_CACHE
:
508 wait
= ATAPI_WAIT_PC
;
511 if (!(rq
->cmd_flags
& REQ_QUIET
))
512 printk(KERN_INFO
"ide-cd: cmd 0x%x timed out\n",
521 * Set up the device registers for transferring a packet command on DEV,
522 * expecting to later transfer XFERLEN bytes. HANDLER is the routine
523 * which actually transfers the command to the drive. If this is a
524 * drq_interrupt device, this routine will arrange for HANDLER to be
525 * called when the interrupt from the drive arrives. Otherwise, HANDLER
526 * will be called immediately after the drive is prepared for the transfer.
528 static ide_startstop_t
cdrom_start_packet_command(ide_drive_t
*drive
,
530 ide_handler_t
*handler
)
532 ide_startstop_t startstop
;
533 struct cdrom_info
*info
= drive
->driver_data
;
534 ide_hwif_t
*hwif
= drive
->hwif
;
536 /* wait for the controller to be idle */
537 if (ide_wait_stat(&startstop
, drive
, 0, BUSY_STAT
, WAIT_READY
))
540 /* FIXME: for Virtual DMA we must check harder */
542 info
->dma
= !hwif
->dma_ops
->dma_setup(drive
);
544 /* set up the controller registers */
545 ide_pktcmd_tf_load(drive
, IDE_TFLAG_OUT_NSECT
| IDE_TFLAG_OUT_LBAL
|
546 IDE_TFLAG_NO_SELECT_MASK
, xferlen
, info
->dma
);
548 if (info
->cd_flags
& IDE_CD_FLAG_DRQ_INTERRUPT
) {
549 /* waiting for CDB interrupt, not DMA yet. */
551 drive
->waiting_for_dma
= 0;
554 ide_execute_command(drive
, WIN_PACKETCMD
, handler
,
555 ATAPI_WAIT_PC
, cdrom_timer_expiry
);
561 spin_lock_irqsave(&ide_lock
, flags
);
562 hwif
->OUTBSYNC(drive
, WIN_PACKETCMD
,
563 hwif
->io_ports
[IDE_COMMAND_OFFSET
]);
565 spin_unlock_irqrestore(&ide_lock
, flags
);
567 return (*handler
) (drive
);
572 * Send a packet command to DRIVE described by CMD_BUF and CMD_LEN. The device
573 * registers must have already been prepared by cdrom_start_packet_command.
574 * HANDLER is the interrupt handler to call when the command completes or
575 * there's data ready.
577 #define ATAPI_MIN_CDB_BYTES 12
578 static ide_startstop_t
cdrom_transfer_packet_command(ide_drive_t
*drive
,
580 ide_handler_t
*handler
)
582 ide_hwif_t
*hwif
= drive
->hwif
;
584 struct cdrom_info
*info
= drive
->driver_data
;
585 ide_startstop_t startstop
;
587 if (info
->cd_flags
& IDE_CD_FLAG_DRQ_INTERRUPT
) {
589 * Here we should have been called after receiving an interrupt
590 * from the device. DRQ should how be set.
593 /* check for errors */
594 if (cdrom_decode_status(drive
, DRQ_STAT
, NULL
))
597 /* ok, next interrupt will be DMA interrupt */
599 drive
->waiting_for_dma
= 1;
601 /* otherwise, we must wait for DRQ to get set */
602 if (ide_wait_stat(&startstop
, drive
, DRQ_STAT
,
603 BUSY_STAT
, WAIT_READY
))
607 /* arm the interrupt handler */
608 ide_set_handler(drive
, handler
, rq
->timeout
, cdrom_timer_expiry
);
610 /* ATAPI commands get padded out to 12 bytes minimum */
611 cmd_len
= COMMAND_SIZE(rq
->cmd
[0]);
612 if (cmd_len
< ATAPI_MIN_CDB_BYTES
)
613 cmd_len
= ATAPI_MIN_CDB_BYTES
;
615 /* send the command to the device */
616 HWIF(drive
)->atapi_output_bytes(drive
, rq
->cmd
, cmd_len
);
618 /* start the DMA if need be */
620 hwif
->dma_ops
->dma_start(drive
);
626 * Block read functions.
628 static void ide_cd_pad_transfer(ide_drive_t
*drive
, xfer_func_t
*xf
, int len
)
632 xf(drive
, &dum
, sizeof(dum
));
637 static void ide_cd_drain_data(ide_drive_t
*drive
, int nsects
)
640 static char dum
[SECTOR_SIZE
];
642 drive
->hwif
->atapi_input_bytes(drive
, dum
, sizeof(dum
));
648 * Check the contents of the interrupt reason register from the cdrom
649 * and attempt to recover if there are problems. Returns 0 if everything's
650 * ok; nonzero if the request has been terminated.
652 static int ide_cd_check_ireason(ide_drive_t
*drive
, struct request
*rq
,
653 int len
, int ireason
, int rw
)
656 * ireason == 0: the drive wants to receive data from us
657 * ireason == 2: the drive is expecting to transfer data to us
659 if (ireason
== (!rw
<< 1))
661 else if (ireason
== (rw
<< 1)) {
662 ide_hwif_t
*hwif
= drive
->hwif
;
666 printk(KERN_ERR
"%s: %s: wrong transfer direction!\n",
667 drive
->name
, __func__
);
669 xf
= rw
? hwif
->atapi_output_bytes
: hwif
->atapi_input_bytes
;
670 ide_cd_pad_transfer(drive
, xf
, len
);
671 } else if (rw
== 0 && ireason
== 1) {
673 * Some drives (ASUS) seem to tell us that status info is
674 * available. Just get it and ignore.
676 (void)ide_read_status(drive
);
679 /* drive wants a command packet, or invalid ireason... */
680 printk(KERN_ERR
"%s: %s: bad interrupt reason 0x%02x\n",
681 drive
->name
, __func__
, ireason
);
684 if (rq
->cmd_type
== REQ_TYPE_ATA_PC
)
685 rq
->cmd_flags
|= REQ_FAILED
;
687 cdrom_end_request(drive
, 0);
692 * Assume that the drive will always provide data in multiples of at least
693 * SECTOR_SIZE, as it gets hairy to keep track of the transfers otherwise.
695 static int ide_cd_check_transfer_size(ide_drive_t
*drive
, int len
)
697 struct cdrom_info
*cd
= drive
->driver_data
;
699 if ((len
% SECTOR_SIZE
) == 0)
702 printk(KERN_ERR
"%s: %s: Bad transfer size %d\n",
703 drive
->name
, __func__
, len
);
705 if (cd
->cd_flags
& IDE_CD_FLAG_LIMIT_NFRAMES
)
706 printk(KERN_ERR
" This drive is not supported by "
707 "this version of the driver\n");
709 printk(KERN_ERR
" Trying to limit transfer sizes\n");
710 cd
->cd_flags
|= IDE_CD_FLAG_LIMIT_NFRAMES
;
716 static ide_startstop_t
cdrom_newpc_intr(ide_drive_t
*);
719 * Routine to send a read/write packet command to the drive. This is usually
720 * called directly from cdrom_start_{read,write}(). However, for drq_interrupt
721 * devices, it is called from an interrupt when the drive is ready to accept
724 static ide_startstop_t
cdrom_start_rw_cont(ide_drive_t
*drive
)
726 struct request
*rq
= HWGROUP(drive
)->rq
;
728 if (rq_data_dir(rq
) == READ
) {
729 unsigned short sectors_per_frame
=
730 queue_hardsect_size(drive
->queue
) >> SECTOR_BITS
;
731 int nskip
= rq
->sector
& (sectors_per_frame
- 1);
734 * If the requested sector doesn't start on a frame boundary,
735 * we must adjust the start of the transfer so that it does,
736 * and remember to skip the first few sectors.
738 * If the rq->current_nr_sectors field is larger than the size
739 * of the buffer, it will mean that we're to skip a number of
740 * sectors equal to the amount by which rq->current_nr_sectors
741 * is larger than the buffer size.
744 /* sanity check... */
745 if (rq
->current_nr_sectors
!=
746 bio_cur_sectors(rq
->bio
)) {
747 printk(KERN_ERR
"%s: %s: buffer botch (%u)\n",
748 drive
->name
, __func__
,
749 rq
->current_nr_sectors
);
750 cdrom_end_request(drive
, 0);
753 rq
->current_nr_sectors
+= nskip
;
758 /* the immediate bit */
761 /* set up the command */
762 rq
->timeout
= ATAPI_WAIT_PC
;
764 /* send the command to the drive and return */
765 return cdrom_transfer_packet_command(drive
, rq
, cdrom_newpc_intr
);
768 #define IDECD_SEEK_THRESHOLD (1000) /* 1000 blocks */
769 #define IDECD_SEEK_TIMER (5 * WAIT_MIN_SLEEP) /* 100 ms */
770 #define IDECD_SEEK_TIMEOUT (2 * WAIT_CMD) /* 20 sec */
772 static ide_startstop_t
cdrom_seek_intr(ide_drive_t
*drive
)
774 struct cdrom_info
*info
= drive
->driver_data
;
776 static int retry
= 10;
778 if (cdrom_decode_status(drive
, 0, &stat
))
781 info
->cd_flags
|= IDE_CD_FLAG_SEEKING
;
783 if (retry
&& time_after(jiffies
, info
->start_seek
+ IDECD_SEEK_TIMER
)) {
785 drive
->dsc_overlap
= 0;
790 static ide_startstop_t
cdrom_start_seek_continuation(ide_drive_t
*drive
)
792 struct request
*rq
= HWGROUP(drive
)->rq
;
793 sector_t frame
= rq
->sector
;
795 sector_div(frame
, queue_hardsect_size(drive
->queue
) >> SECTOR_BITS
);
797 memset(rq
->cmd
, 0, sizeof(rq
->cmd
));
798 rq
->cmd
[0] = GPCMD_SEEK
;
799 put_unaligned(cpu_to_be32(frame
), (unsigned int *) &rq
->cmd
[2]);
801 rq
->timeout
= ATAPI_WAIT_PC
;
802 return cdrom_transfer_packet_command(drive
, rq
, &cdrom_seek_intr
);
805 static ide_startstop_t
cdrom_start_seek(ide_drive_t
*drive
, unsigned int block
)
807 struct cdrom_info
*info
= drive
->driver_data
;
810 info
->start_seek
= jiffies
;
811 return cdrom_start_packet_command(drive
, 0,
812 cdrom_start_seek_continuation
);
816 * Fix up a possibly partially-processed request so that we can start it over
817 * entirely, or even put it back on the request queue.
819 static void restore_request(struct request
*rq
)
821 if (rq
->buffer
!= bio_data(rq
->bio
)) {
823 (rq
->buffer
- (char *)bio_data(rq
->bio
)) / SECTOR_SIZE
;
825 rq
->buffer
= bio_data(rq
->bio
);
829 rq
->current_nr_sectors
= bio_cur_sectors(rq
->bio
);
830 rq
->hard_cur_sectors
= rq
->current_nr_sectors
;
831 rq
->hard_nr_sectors
= rq
->nr_sectors
;
832 rq
->hard_sector
= rq
->sector
;
833 rq
->q
->prep_rq_fn(rq
->q
, rq
);
837 * All other packet commands.
839 static void ide_cd_request_sense_fixup(struct request
*rq
)
842 * Some of the trailing request sense fields are optional,
843 * and some drives don't send them. Sigh.
845 if (rq
->cmd
[0] == GPCMD_REQUEST_SENSE
&&
846 rq
->data_len
> 0 && rq
->data_len
<= 5)
847 while (rq
->data_len
> 0) {
848 *(u8
*)rq
->data
++ = 0;
853 int ide_cd_queue_pc(ide_drive_t
*drive
, struct request
*rq
)
855 struct request_sense sense
;
857 unsigned int flags
= rq
->cmd_flags
;
859 if (rq
->sense
== NULL
)
862 /* start of retry loop */
865 unsigned long time
= jiffies
;
866 rq
->cmd_flags
= flags
;
868 error
= ide_do_drive_cmd(drive
, rq
, ide_wait
);
869 time
= jiffies
- time
;
872 * FIXME: we should probably abort/retry or something in case of
875 if (rq
->cmd_flags
& REQ_FAILED
) {
877 * The request failed. Retry if it was due to a unit
878 * attention status (usually means media was changed).
880 struct request_sense
*reqbuf
= rq
->sense
;
882 if (reqbuf
->sense_key
== UNIT_ATTENTION
)
883 cdrom_saw_media_change(drive
);
884 else if (reqbuf
->sense_key
== NOT_READY
&&
885 reqbuf
->asc
== 4 && reqbuf
->ascq
!= 4) {
887 * The drive is in the process of loading
888 * a disk. Retry, but wait a little to give
889 * the drive time to complete the load.
893 /* otherwise, don't retry */
899 /* end of retry loop */
900 } while ((rq
->cmd_flags
& REQ_FAILED
) && retries
>= 0);
902 /* return an error if the command failed */
903 return (rq
->cmd_flags
& REQ_FAILED
) ? -EIO
: 0;
907 * Called from blk_end_request_callback() after the data of the request is
908 * completed and before the request itself is completed. By returning value '1',
909 * blk_end_request_callback() returns immediately without completing it.
911 static int cdrom_newpc_intr_dummy_cb(struct request
*rq
)
916 static ide_startstop_t
cdrom_newpc_intr(ide_drive_t
*drive
)
918 ide_hwif_t
*hwif
= drive
->hwif
;
919 struct cdrom_info
*info
= drive
->driver_data
;
920 struct request
*rq
= HWGROUP(drive
)->rq
;
921 xfer_func_t
*xferfunc
;
922 ide_expiry_t
*expiry
= NULL
;
923 int dma_error
= 0, dma
, stat
, ireason
, len
, thislen
, uptodate
= 0;
924 int write
= (rq_data_dir(rq
) == WRITE
) ? 1 : 0;
925 unsigned int timeout
;
928 /* check for errors */
932 dma_error
= hwif
->dma_ops
->dma_end(drive
);
934 printk(KERN_ERR
"%s: DMA %s error\n", drive
->name
,
935 write
? "write" : "read");
940 if (cdrom_decode_status(drive
, 0, &stat
))
943 /* using dma, transfer is complete now */
946 return ide_error(drive
, "dma error", stat
);
947 if (blk_fs_request(rq
)) {
948 ide_end_request(drive
, 1, rq
->nr_sectors
);
954 /* ok we fall to pio :/ */
955 ireason
= hwif
->INB(hwif
->io_ports
[IDE_IREASON_OFFSET
]) & 0x3;
956 lowcyl
= hwif
->INB(hwif
->io_ports
[IDE_BCOUNTL_OFFSET
]);
957 highcyl
= hwif
->INB(hwif
->io_ports
[IDE_BCOUNTH_OFFSET
]);
959 len
= lowcyl
+ (256 * highcyl
);
961 thislen
= blk_fs_request(rq
) ? len
: rq
->data_len
;
965 /* If DRQ is clear, the command has completed. */
966 if ((stat
& DRQ_STAT
) == 0) {
967 if (blk_fs_request(rq
)) {
969 * If we're not done reading/writing, complain.
970 * Otherwise, complete the command normally.
973 if (rq
->current_nr_sectors
> 0) {
974 printk(KERN_ERR
"%s: %s: data underrun "
976 drive
->name
, __func__
,
977 rq
->current_nr_sectors
);
979 rq
->cmd_flags
|= REQ_FAILED
;
982 cdrom_end_request(drive
, uptodate
);
984 } else if (!blk_pc_request(rq
)) {
985 ide_cd_request_sense_fixup(rq
);
986 /* complain if we still have data left to transfer */
987 uptodate
= rq
->data_len
? 0 : 1;
992 /* check which way to transfer data */
993 if (ide_cd_check_ireason(drive
, rq
, len
, ireason
, write
))
996 if (blk_fs_request(rq
)) {
1000 if (ide_cd_check_transfer_size(drive
, len
)) {
1001 cdrom_end_request(drive
, 0);
1006 * First, figure out if we need to bit-bucket
1007 * any of the leading sectors.
1009 nskip
= min_t(int, rq
->current_nr_sectors
1010 - bio_cur_sectors(rq
->bio
),
1013 ide_cd_drain_data(drive
, nskip
);
1014 rq
->current_nr_sectors
-= nskip
;
1015 thislen
-= (nskip
<< 9);
1022 xferfunc
= HWIF(drive
)->atapi_output_bytes
;
1025 xferfunc
= HWIF(drive
)->atapi_input_bytes
;
1029 while (thislen
> 0) {
1030 u8
*ptr
= blk_fs_request(rq
) ? NULL
: rq
->data
;
1031 int blen
= rq
->data_len
;
1035 if (blk_fs_request(rq
)) {
1037 blen
= rq
->current_nr_sectors
<< 9;
1039 ptr
= bio_data(rq
->bio
);
1040 blen
= bio_iovec(rq
->bio
)->bv_len
;
1045 if (blk_fs_request(rq
) && !write
)
1047 * If the buffers are full, pipe the rest into
1050 ide_cd_drain_data(drive
, thislen
>> 9);
1052 printk(KERN_ERR
"%s: confused, missing data\n",
1054 blk_dump_rq_flags(rq
, rq_data_dir(rq
)
1055 ? "cdrom_newpc_intr, write"
1056 : "cdrom_newpc_intr, read");
1064 xferfunc(drive
, ptr
, blen
);
1069 if (blk_fs_request(rq
)) {
1071 rq
->nr_sectors
-= (blen
>> 9);
1072 rq
->current_nr_sectors
-= (blen
>> 9);
1073 rq
->sector
+= (blen
>> 9);
1075 if (rq
->current_nr_sectors
== 0 && rq
->nr_sectors
)
1076 cdrom_end_request(drive
, 1);
1078 rq
->data_len
-= blen
;
1081 * The request can't be completed until DRQ is cleared.
1082 * So complete the data, but don't complete the request
1083 * using the dummy function for the callback feature
1084 * of blk_end_request_callback().
1087 blk_end_request_callback(rq
, 0, blen
,
1088 cdrom_newpc_intr_dummy_cb
);
1092 if (!write
&& blk_sense_request(rq
))
1093 rq
->sense_len
+= blen
;
1096 /* pad, if necessary */
1097 if (!blk_fs_request(rq
) && len
> 0)
1098 ide_cd_pad_transfer(drive
, xferfunc
, len
);
1100 if (blk_pc_request(rq
)) {
1101 timeout
= rq
->timeout
;
1103 timeout
= ATAPI_WAIT_PC
;
1104 if (!blk_fs_request(rq
))
1105 expiry
= cdrom_timer_expiry
;
1108 ide_set_handler(drive
, cdrom_newpc_intr
, timeout
, expiry
);
1112 if (blk_pc_request(rq
)) {
1113 unsigned long flags
;
1114 unsigned int dlen
= rq
->data_len
;
1119 spin_lock_irqsave(&ide_lock
, flags
);
1120 if (__blk_end_request(rq
, 0, dlen
))
1122 HWGROUP(drive
)->rq
= NULL
;
1123 spin_unlock_irqrestore(&ide_lock
, flags
);
1126 rq
->cmd_flags
|= REQ_FAILED
;
1127 cdrom_end_request(drive
, uptodate
);
1132 static ide_startstop_t
cdrom_start_rw(ide_drive_t
*drive
, struct request
*rq
)
1134 struct cdrom_info
*cd
= drive
->driver_data
;
1135 int write
= rq_data_dir(rq
) == WRITE
;
1136 unsigned short sectors_per_frame
=
1137 queue_hardsect_size(drive
->queue
) >> SECTOR_BITS
;
1140 /* disk has become write protected */
1141 if (cd
->disk
->policy
) {
1142 cdrom_end_request(drive
, 0);
1147 * We may be retrying this request after an error. Fix up any
1148 * weirdness which might be present in the request packet.
1150 restore_request(rq
);
1153 /* use DMA, if possible / writes *must* be hardware frame aligned */
1154 if ((rq
->nr_sectors
& (sectors_per_frame
- 1)) ||
1155 (rq
->sector
& (sectors_per_frame
- 1))) {
1157 cdrom_end_request(drive
, 0);
1162 cd
->dma
= drive
->using_dma
;
1165 cd
->devinfo
.media_written
= 1;
1167 /* start sending the read/write request to the drive */
1168 return cdrom_start_packet_command(drive
, 32768, cdrom_start_rw_cont
);
1171 static ide_startstop_t
cdrom_do_newpc_cont(ide_drive_t
*drive
)
1173 struct request
*rq
= HWGROUP(drive
)->rq
;
1176 rq
->timeout
= ATAPI_WAIT_PC
;
1178 return cdrom_transfer_packet_command(drive
, rq
, cdrom_newpc_intr
);
1181 static ide_startstop_t
cdrom_do_block_pc(ide_drive_t
*drive
, struct request
*rq
)
1183 struct cdrom_info
*info
= drive
->driver_data
;
1185 if (blk_pc_request(rq
))
1186 rq
->cmd_flags
|= REQ_QUIET
;
1188 rq
->cmd_flags
&= ~REQ_FAILED
;
1194 int mask
= drive
->queue
->dma_alignment
;
1195 unsigned long addr
=
1196 (unsigned long)page_address(bio_page(rq
->bio
));
1198 info
->dma
= drive
->using_dma
;
1201 * check if dma is safe
1203 * NOTE! The "len" and "addr" checks should possibly have
1206 if ((rq
->data_len
& 15) || (addr
& mask
))
1210 /* start sending the command to the drive */
1211 return cdrom_start_packet_command(drive
, rq
->data_len
,
1212 cdrom_do_newpc_cont
);
1216 * cdrom driver request routine.
1218 static ide_startstop_t
ide_do_rw_cdrom(ide_drive_t
*drive
, struct request
*rq
,
1221 ide_startstop_t action
;
1222 struct cdrom_info
*info
= drive
->driver_data
;
1224 if (blk_fs_request(rq
)) {
1225 if (info
->cd_flags
& IDE_CD_FLAG_SEEKING
) {
1226 unsigned long elapsed
= jiffies
- info
->start_seek
;
1227 int stat
= ide_read_status(drive
);
1229 if ((stat
& SEEK_STAT
) != SEEK_STAT
) {
1230 if (elapsed
< IDECD_SEEK_TIMEOUT
) {
1231 ide_stall_queue(drive
,
1235 printk(KERN_ERR
"%s: DSC timeout\n",
1238 info
->cd_flags
&= ~IDE_CD_FLAG_SEEKING
;
1240 if (rq_data_dir(rq
) == READ
&&
1241 IDE_LARGE_SEEK(info
->last_block
, block
,
1242 IDECD_SEEK_THRESHOLD
) &&
1244 action
= cdrom_start_seek(drive
, block
);
1246 action
= cdrom_start_rw(drive
, rq
);
1247 info
->last_block
= block
;
1249 } else if (blk_sense_request(rq
) || blk_pc_request(rq
) ||
1250 rq
->cmd_type
== REQ_TYPE_ATA_PC
) {
1251 return cdrom_do_block_pc(drive
, rq
);
1252 } else if (blk_special_request(rq
)) {
1253 /* right now this can only be a reset... */
1254 cdrom_end_request(drive
, 1);
1258 blk_dump_rq_flags(rq
, "ide-cd bad flags");
1259 cdrom_end_request(drive
, 0);
1268 * Routines which queue packet commands take as a final argument a pointer to a
1269 * request_sense struct. If execution of the command results in an error with a
1270 * CHECK CONDITION status, this structure will be filled with the results of the
1271 * subsequent request sense command. The pointer can also be NULL, in which case
1272 * no sense information is returned.
1274 static void msf_from_bcd(struct atapi_msf
*msf
)
1276 msf
->minute
= BCD2BIN(msf
->minute
);
1277 msf
->second
= BCD2BIN(msf
->second
);
1278 msf
->frame
= BCD2BIN(msf
->frame
);
1281 int cdrom_check_status(ide_drive_t
*drive
, struct request_sense
*sense
)
1284 struct cdrom_info
*info
= drive
->driver_data
;
1285 struct cdrom_device_info
*cdi
= &info
->devinfo
;
1287 ide_cd_init_rq(drive
, &req
);
1290 req
.cmd
[0] = GPCMD_TEST_UNIT_READY
;
1291 req
.cmd_flags
|= REQ_QUIET
;
1294 * Sanyo 3 CD changer uses byte 7 of TEST_UNIT_READY to switch CDs
1295 * instead of supporting the LOAD_UNLOAD opcode.
1297 req
.cmd
[7] = cdi
->sanyo_slot
% 3;
1299 return ide_cd_queue_pc(drive
, &req
);
1302 static int cdrom_read_capacity(ide_drive_t
*drive
, unsigned long *capacity
,
1303 unsigned long *sectors_per_frame
,
1304 struct request_sense
*sense
)
1314 ide_cd_init_rq(drive
, &req
);
1317 req
.cmd
[0] = GPCMD_READ_CDVD_CAPACITY
;
1318 req
.data
= (char *)&capbuf
;
1319 req
.data_len
= sizeof(capbuf
);
1320 req
.cmd_flags
|= REQ_QUIET
;
1322 stat
= ide_cd_queue_pc(drive
, &req
);
1324 *capacity
= 1 + be32_to_cpu(capbuf
.lba
);
1325 *sectors_per_frame
=
1326 be32_to_cpu(capbuf
.blocklen
) >> SECTOR_BITS
;
1332 static int cdrom_read_tocentry(ide_drive_t
*drive
, int trackno
, int msf_flag
,
1333 int format
, char *buf
, int buflen
,
1334 struct request_sense
*sense
)
1338 ide_cd_init_rq(drive
, &req
);
1342 req
.data_len
= buflen
;
1343 req
.cmd_flags
|= REQ_QUIET
;
1344 req
.cmd
[0] = GPCMD_READ_TOC_PMA_ATIP
;
1345 req
.cmd
[6] = trackno
;
1346 req
.cmd
[7] = (buflen
>> 8);
1347 req
.cmd
[8] = (buflen
& 0xff);
1348 req
.cmd
[9] = (format
<< 6);
1353 return ide_cd_queue_pc(drive
, &req
);
1356 /* Try to read the entire TOC for the disk into our internal buffer. */
1357 int ide_cd_read_toc(ide_drive_t
*drive
, struct request_sense
*sense
)
1359 int stat
, ntracks
, i
;
1360 struct cdrom_info
*info
= drive
->driver_data
;
1361 struct cdrom_device_info
*cdi
= &info
->devinfo
;
1362 struct atapi_toc
*toc
= info
->toc
;
1364 struct atapi_toc_header hdr
;
1365 struct atapi_toc_entry ent
;
1368 unsigned long sectors_per_frame
= SECTORS_PER_FRAME
;
1371 /* try to allocate space */
1372 toc
= kmalloc(sizeof(struct atapi_toc
), GFP_KERNEL
);
1374 printk(KERN_ERR
"%s: No cdrom TOC buffer!\n",
1382 * Check to see if the existing data is still valid. If it is,
1385 (void) cdrom_check_status(drive
, sense
);
1387 if (info
->cd_flags
& IDE_CD_FLAG_TOC_VALID
)
1390 /* try to get the total cdrom capacity and sector size */
1391 stat
= cdrom_read_capacity(drive
, &toc
->capacity
, §ors_per_frame
,
1394 toc
->capacity
= 0x1fffff;
1396 set_capacity(info
->disk
, toc
->capacity
* sectors_per_frame
);
1397 /* save a private copy of the TOC capacity for error handling */
1398 drive
->probed_capacity
= toc
->capacity
* sectors_per_frame
;
1400 blk_queue_hardsect_size(drive
->queue
,
1401 sectors_per_frame
<< SECTOR_BITS
);
1403 /* first read just the header, so we know how long the TOC is */
1404 stat
= cdrom_read_tocentry(drive
, 0, 1, 0, (char *) &toc
->hdr
,
1405 sizeof(struct atapi_toc_header
), sense
);
1409 if (info
->cd_flags
& IDE_CD_FLAG_TOCTRACKS_AS_BCD
) {
1410 toc
->hdr
.first_track
= BCD2BIN(toc
->hdr
.first_track
);
1411 toc
->hdr
.last_track
= BCD2BIN(toc
->hdr
.last_track
);
1414 ntracks
= toc
->hdr
.last_track
- toc
->hdr
.first_track
+ 1;
1417 if (ntracks
> MAX_TRACKS
)
1418 ntracks
= MAX_TRACKS
;
1420 /* now read the whole schmeer */
1421 stat
= cdrom_read_tocentry(drive
, toc
->hdr
.first_track
, 1, 0,
1423 sizeof(struct atapi_toc_header
) +
1425 sizeof(struct atapi_toc_entry
), sense
);
1427 if (stat
&& toc
->hdr
.first_track
> 1) {
1429 * Cds with CDI tracks only don't have any TOC entries, despite
1430 * of this the returned values are
1431 * first_track == last_track = number of CDI tracks + 1,
1432 * so that this case is indistinguishable from the same layout
1433 * plus an additional audio track. If we get an error for the
1434 * regular case, we assume a CDI without additional audio
1435 * tracks. In this case the readable TOC is empty (CDI tracks
1436 * are not included) and only holds the Leadout entry.
1441 stat
= cdrom_read_tocentry(drive
, CDROM_LEADOUT
, 1, 0,
1443 sizeof(struct atapi_toc_header
) +
1445 sizeof(struct atapi_toc_entry
),
1450 if (info
->cd_flags
& IDE_CD_FLAG_TOCTRACKS_AS_BCD
) {
1451 toc
->hdr
.first_track
= (u8
)BIN2BCD(CDROM_LEADOUT
);
1452 toc
->hdr
.last_track
= (u8
)BIN2BCD(CDROM_LEADOUT
);
1454 toc
->hdr
.first_track
= CDROM_LEADOUT
;
1455 toc
->hdr
.last_track
= CDROM_LEADOUT
;
1462 toc
->hdr
.toc_length
= be16_to_cpu(toc
->hdr
.toc_length
);
1464 if (info
->cd_flags
& IDE_CD_FLAG_TOCTRACKS_AS_BCD
) {
1465 toc
->hdr
.first_track
= BCD2BIN(toc
->hdr
.first_track
);
1466 toc
->hdr
.last_track
= BCD2BIN(toc
->hdr
.last_track
);
1469 for (i
= 0; i
<= ntracks
; i
++) {
1470 if (info
->cd_flags
& IDE_CD_FLAG_TOCADDR_AS_BCD
) {
1471 if (info
->cd_flags
& IDE_CD_FLAG_TOCTRACKS_AS_BCD
)
1472 toc
->ent
[i
].track
= BCD2BIN(toc
->ent
[i
].track
);
1473 msf_from_bcd(&toc
->ent
[i
].addr
.msf
);
1475 toc
->ent
[i
].addr
.lba
= msf_to_lba(toc
->ent
[i
].addr
.msf
.minute
,
1476 toc
->ent
[i
].addr
.msf
.second
,
1477 toc
->ent
[i
].addr
.msf
.frame
);
1480 if (toc
->hdr
.first_track
!= CDROM_LEADOUT
) {
1481 /* read the multisession information */
1482 stat
= cdrom_read_tocentry(drive
, 0, 0, 1, (char *)&ms_tmp
,
1483 sizeof(ms_tmp
), sense
);
1487 toc
->last_session_lba
= be32_to_cpu(ms_tmp
.ent
.addr
.lba
);
1489 ms_tmp
.hdr
.last_track
= CDROM_LEADOUT
;
1490 ms_tmp
.hdr
.first_track
= ms_tmp
.hdr
.last_track
;
1491 toc
->last_session_lba
= msf_to_lba(0, 2, 0); /* 0m 2s 0f */
1494 if (info
->cd_flags
& IDE_CD_FLAG_TOCADDR_AS_BCD
) {
1495 /* re-read multisession information using MSF format */
1496 stat
= cdrom_read_tocentry(drive
, 0, 1, 1, (char *)&ms_tmp
,
1497 sizeof(ms_tmp
), sense
);
1501 msf_from_bcd(&ms_tmp
.ent
.addr
.msf
);
1502 toc
->last_session_lba
= msf_to_lba(ms_tmp
.ent
.addr
.msf
.minute
,
1503 ms_tmp
.ent
.addr
.msf
.second
,
1504 ms_tmp
.ent
.addr
.msf
.frame
);
1507 toc
->xa_flag
= (ms_tmp
.hdr
.first_track
!= ms_tmp
.hdr
.last_track
);
1509 /* now try to get the total cdrom capacity */
1510 stat
= cdrom_get_last_written(cdi
, &last_written
);
1511 if (!stat
&& (last_written
> toc
->capacity
)) {
1512 toc
->capacity
= last_written
;
1513 set_capacity(info
->disk
, toc
->capacity
* sectors_per_frame
);
1514 drive
->probed_capacity
= toc
->capacity
* sectors_per_frame
;
1517 /* Remember that we've read this stuff. */
1518 info
->cd_flags
|= IDE_CD_FLAG_TOC_VALID
;
1523 int ide_cdrom_get_capabilities(ide_drive_t
*drive
, u8
*buf
)
1525 struct cdrom_info
*info
= drive
->driver_data
;
1526 struct cdrom_device_info
*cdi
= &info
->devinfo
;
1527 struct packet_command cgc
;
1528 int stat
, attempts
= 3, size
= ATAPI_CAPABILITIES_PAGE_SIZE
;
1530 if ((info
->cd_flags
& IDE_CD_FLAG_FULL_CAPS_PAGE
) == 0)
1531 size
-= ATAPI_CAPABILITIES_PAGE_PAD_SIZE
;
1533 init_cdrom_command(&cgc
, buf
, size
, CGC_DATA_UNKNOWN
);
1535 /* we seem to get stat=0x01,err=0x00 the first time (??) */
1536 stat
= cdrom_mode_sense(cdi
, &cgc
, GPMODE_CAPABILITIES_PAGE
, 0);
1539 } while (--attempts
);
1543 void ide_cdrom_update_speed(ide_drive_t
*drive
, u8
*buf
)
1545 struct cdrom_info
*cd
= drive
->driver_data
;
1546 u16 curspeed
, maxspeed
;
1548 curspeed
= *(u16
*)&buf
[8 + 14];
1549 maxspeed
= *(u16
*)&buf
[8 + 8];
1551 if (cd
->cd_flags
& IDE_CD_FLAG_LE_SPEED_FIELDS
) {
1552 curspeed
= le16_to_cpu(curspeed
);
1553 maxspeed
= le16_to_cpu(maxspeed
);
1555 curspeed
= be16_to_cpu(curspeed
);
1556 maxspeed
= be16_to_cpu(maxspeed
);
1559 cd
->current_speed
= (curspeed
+ (176/2)) / 176;
1560 cd
->max_speed
= (maxspeed
+ (176/2)) / 176;
1563 #define IDE_CD_CAPABILITIES \
1564 (CDC_CLOSE_TRAY | CDC_OPEN_TRAY | CDC_LOCK | CDC_SELECT_SPEED | \
1565 CDC_SELECT_DISC | CDC_MULTI_SESSION | CDC_MCN | CDC_MEDIA_CHANGED | \
1566 CDC_PLAY_AUDIO | CDC_RESET | CDC_DRIVE_STATUS | CDC_CD_R | \
1567 CDC_CD_RW | CDC_DVD | CDC_DVD_R | CDC_DVD_RAM | CDC_GENERIC_PACKET | \
1568 CDC_MO_DRIVE | CDC_MRW | CDC_MRW_W | CDC_RAM)
1570 static struct cdrom_device_ops ide_cdrom_dops
= {
1571 .open
= ide_cdrom_open_real
,
1572 .release
= ide_cdrom_release_real
,
1573 .drive_status
= ide_cdrom_drive_status
,
1574 .media_changed
= ide_cdrom_check_media_change_real
,
1575 .tray_move
= ide_cdrom_tray_move
,
1576 .lock_door
= ide_cdrom_lock_door
,
1577 .select_speed
= ide_cdrom_select_speed
,
1578 .get_last_session
= ide_cdrom_get_last_session
,
1579 .get_mcn
= ide_cdrom_get_mcn
,
1580 .reset
= ide_cdrom_reset
,
1581 .audio_ioctl
= ide_cdrom_audio_ioctl
,
1582 .capability
= IDE_CD_CAPABILITIES
,
1583 .generic_packet
= ide_cdrom_packet
,
1586 static int ide_cdrom_register(ide_drive_t
*drive
, int nslots
)
1588 struct cdrom_info
*info
= drive
->driver_data
;
1589 struct cdrom_device_info
*devinfo
= &info
->devinfo
;
1591 devinfo
->ops
= &ide_cdrom_dops
;
1592 devinfo
->speed
= info
->current_speed
;
1593 devinfo
->capacity
= nslots
;
1594 devinfo
->handle
= drive
;
1595 strcpy(devinfo
->name
, drive
->name
);
1597 if (info
->cd_flags
& IDE_CD_FLAG_NO_SPEED_SELECT
)
1598 devinfo
->mask
|= CDC_SELECT_SPEED
;
1600 devinfo
->disk
= info
->disk
;
1601 return register_cdrom(devinfo
);
1604 static int ide_cdrom_probe_capabilities(ide_drive_t
*drive
)
1606 struct cdrom_info
*cd
= drive
->driver_data
;
1607 struct cdrom_device_info
*cdi
= &cd
->devinfo
;
1608 u8 buf
[ATAPI_CAPABILITIES_PAGE_SIZE
];
1609 mechtype_t mechtype
;
1612 cdi
->mask
= (CDC_CD_R
| CDC_CD_RW
| CDC_DVD
| CDC_DVD_R
|
1613 CDC_DVD_RAM
| CDC_SELECT_DISC
| CDC_PLAY_AUDIO
|
1614 CDC_MO_DRIVE
| CDC_RAM
);
1616 if (drive
->media
== ide_optical
) {
1617 cdi
->mask
&= ~(CDC_MO_DRIVE
| CDC_RAM
);
1618 printk(KERN_ERR
"%s: ATAPI magneto-optical drive\n",
1623 if (cd
->cd_flags
& IDE_CD_FLAG_PRE_ATAPI12
) {
1624 cd
->cd_flags
&= ~IDE_CD_FLAG_NO_EJECT
;
1625 cdi
->mask
&= ~CDC_PLAY_AUDIO
;
1630 * We have to cheat a little here. the packet will eventually be queued
1631 * with ide_cdrom_packet(), which extracts the drive from cdi->handle.
1632 * Since this device hasn't been registered with the Uniform layer yet,
1633 * it can't do this. Same goes for cdi->ops.
1635 cdi
->handle
= drive
;
1636 cdi
->ops
= &ide_cdrom_dops
;
1638 if (ide_cdrom_get_capabilities(drive
, buf
))
1641 if ((buf
[8 + 6] & 0x01) == 0)
1642 cd
->cd_flags
|= IDE_CD_FLAG_NO_DOORLOCK
;
1643 if (buf
[8 + 6] & 0x08)
1644 cd
->cd_flags
&= ~IDE_CD_FLAG_NO_EJECT
;
1645 if (buf
[8 + 3] & 0x01)
1646 cdi
->mask
&= ~CDC_CD_R
;
1647 if (buf
[8 + 3] & 0x02)
1648 cdi
->mask
&= ~(CDC_CD_RW
| CDC_RAM
);
1649 if (buf
[8 + 2] & 0x38)
1650 cdi
->mask
&= ~CDC_DVD
;
1651 if (buf
[8 + 3] & 0x20)
1652 cdi
->mask
&= ~(CDC_DVD_RAM
| CDC_RAM
);
1653 if (buf
[8 + 3] & 0x10)
1654 cdi
->mask
&= ~CDC_DVD_R
;
1655 if ((buf
[8 + 4] & 0x01) || (cd
->cd_flags
& IDE_CD_FLAG_PLAY_AUDIO_OK
))
1656 cdi
->mask
&= ~CDC_PLAY_AUDIO
;
1658 mechtype
= buf
[8 + 6] >> 5;
1659 if (mechtype
== mechtype_caddy
|| mechtype
== mechtype_popup
)
1660 cdi
->mask
|= CDC_CLOSE_TRAY
;
1662 if (cdi
->sanyo_slot
> 0) {
1663 cdi
->mask
&= ~CDC_SELECT_DISC
;
1665 } else if (mechtype
== mechtype_individual_changer
||
1666 mechtype
== mechtype_cartridge_changer
) {
1667 nslots
= cdrom_number_of_slots(cdi
);
1669 cdi
->mask
&= ~CDC_SELECT_DISC
;
1672 ide_cdrom_update_speed(drive
, buf
);
1674 printk(KERN_INFO
"%s: ATAPI", drive
->name
);
1676 /* don't print speed if the drive reported 0 */
1678 printk(KERN_CONT
" %dX", cd
->max_speed
);
1680 printk(KERN_CONT
" %s", (cdi
->mask
& CDC_DVD
) ? "CD-ROM" : "DVD-ROM");
1682 if ((cdi
->mask
& CDC_DVD_R
) == 0 || (cdi
->mask
& CDC_DVD_RAM
) == 0)
1683 printk(KERN_CONT
" DVD%s%s",
1684 (cdi
->mask
& CDC_DVD_R
) ? "" : "-R",
1685 (cdi
->mask
& CDC_DVD_RAM
) ? "" : "-RAM");
1687 if ((cdi
->mask
& CDC_CD_R
) == 0 || (cdi
->mask
& CDC_CD_RW
) == 0)
1688 printk(KERN_CONT
" CD%s%s",
1689 (cdi
->mask
& CDC_CD_R
) ? "" : "-R",
1690 (cdi
->mask
& CDC_CD_RW
) ? "" : "/RW");
1692 if ((cdi
->mask
& CDC_SELECT_DISC
) == 0)
1693 printk(KERN_CONT
" changer w/%d slots", nslots
);
1695 printk(KERN_CONT
" drive");
1697 printk(KERN_CONT
", %dkB Cache\n", be16_to_cpu(*(u16
*)&buf
[8 + 12]));
1702 /* standard prep_rq_fn that builds 10 byte cmds */
1703 static int ide_cdrom_prep_fs(struct request_queue
*q
, struct request
*rq
)
1705 int hard_sect
= queue_hardsect_size(q
);
1706 long block
= (long)rq
->hard_sector
/ (hard_sect
>> 9);
1707 unsigned long blocks
= rq
->hard_nr_sectors
/ (hard_sect
>> 9);
1709 memset(rq
->cmd
, 0, sizeof(rq
->cmd
));
1711 if (rq_data_dir(rq
) == READ
)
1712 rq
->cmd
[0] = GPCMD_READ_10
;
1714 rq
->cmd
[0] = GPCMD_WRITE_10
;
1719 rq
->cmd
[2] = (block
>> 24) & 0xff;
1720 rq
->cmd
[3] = (block
>> 16) & 0xff;
1721 rq
->cmd
[4] = (block
>> 8) & 0xff;
1722 rq
->cmd
[5] = block
& 0xff;
1725 * and transfer length
1727 rq
->cmd
[7] = (blocks
>> 8) & 0xff;
1728 rq
->cmd
[8] = blocks
& 0xff;
1734 * Most of the SCSI commands are supported directly by ATAPI devices.
1735 * This transform handles the few exceptions.
1737 static int ide_cdrom_prep_pc(struct request
*rq
)
1741 /* transform 6-byte read/write commands to the 10-byte version */
1742 if (c
[0] == READ_6
|| c
[0] == WRITE_6
) {
1749 c
[0] += (READ_10
- READ_6
);
1755 * it's silly to pretend we understand 6-byte sense commands, just
1756 * reject with ILLEGAL_REQUEST and the caller should take the
1757 * appropriate action
1759 if (c
[0] == MODE_SENSE
|| c
[0] == MODE_SELECT
) {
1760 rq
->errors
= ILLEGAL_REQUEST
;
1761 return BLKPREP_KILL
;
1767 static int ide_cdrom_prep_fn(struct request_queue
*q
, struct request
*rq
)
1769 if (blk_fs_request(rq
))
1770 return ide_cdrom_prep_fs(q
, rq
);
1771 else if (blk_pc_request(rq
))
1772 return ide_cdrom_prep_pc(rq
);
1777 struct cd_list_entry
{
1778 const char *id_model
;
1779 const char *id_firmware
;
1780 unsigned int cd_flags
;
1783 #ifdef CONFIG_IDE_PROC_FS
1784 static sector_t
ide_cdrom_capacity(ide_drive_t
*drive
)
1786 unsigned long capacity
, sectors_per_frame
;
1788 if (cdrom_read_capacity(drive
, &capacity
, §ors_per_frame
, NULL
))
1791 return capacity
* sectors_per_frame
;
1794 static int proc_idecd_read_capacity(char *page
, char **start
, off_t off
,
1795 int count
, int *eof
, void *data
)
1797 ide_drive_t
*drive
= data
;
1800 len
= sprintf(page
, "%llu\n", (long long)ide_cdrom_capacity(drive
));
1801 PROC_IDE_READ_RETURN(page
, start
, off
, count
, eof
, len
);
1804 static ide_proc_entry_t idecd_proc
[] = {
1805 { "capacity", S_IFREG
|S_IRUGO
, proc_idecd_read_capacity
, NULL
},
1806 { NULL
, 0, NULL
, NULL
}
1809 static void ide_cdrom_add_settings(ide_drive_t
*drive
)
1811 ide_add_setting(drive
, "dsc_overlap", SETTING_RW
, TYPE_BYTE
, 0, 1, 1, 1,
1812 &drive
->dsc_overlap
, NULL
);
1815 static inline void ide_cdrom_add_settings(ide_drive_t
*drive
) { ; }
1818 static const struct cd_list_entry ide_cd_quirks_list
[] = {
1819 /* Limit transfer size per interrupt. */
1820 { "SAMSUNG CD-ROM SCR-2430", NULL
, IDE_CD_FLAG_LIMIT_NFRAMES
},
1821 { "SAMSUNG CD-ROM SCR-2432", NULL
, IDE_CD_FLAG_LIMIT_NFRAMES
},
1822 /* SCR-3231 doesn't support the SET_CD_SPEED command. */
1823 { "SAMSUNG CD-ROM SCR-3231", NULL
, IDE_CD_FLAG_NO_SPEED_SELECT
},
1824 /* Old NEC260 (not R) was released before ATAPI 1.2 spec. */
1825 { "NEC CD-ROM DRIVE:260", "1.01", IDE_CD_FLAG_TOCADDR_AS_BCD
|
1826 IDE_CD_FLAG_PRE_ATAPI12
, },
1827 /* Vertos 300, some versions of this drive like to talk BCD. */
1828 { "V003S0DS", NULL
, IDE_CD_FLAG_VERTOS_300_SSD
, },
1829 /* Vertos 600 ESD. */
1830 { "V006E0DS", NULL
, IDE_CD_FLAG_VERTOS_600_ESD
, },
1832 * Sanyo 3 CD changer uses a non-standard command for CD changing
1833 * (by default standard ATAPI support for CD changers is used).
1835 { "CD-ROM CDR-C3 G", NULL
, IDE_CD_FLAG_SANYO_3CD
},
1836 { "CD-ROM CDR-C3G", NULL
, IDE_CD_FLAG_SANYO_3CD
},
1837 { "CD-ROM CDR_C36", NULL
, IDE_CD_FLAG_SANYO_3CD
},
1838 /* Stingray 8X CD-ROM. */
1839 { "STINGRAY 8422 IDE 8X CD-ROM 7-27-95", NULL
, IDE_CD_FLAG_PRE_ATAPI12
},
1841 * ACER 50X CD-ROM and WPI 32X CD-ROM require the full spec length
1842 * mode sense page capabilities size, but older drives break.
1844 { "ATAPI CD ROM DRIVE 50X MAX", NULL
, IDE_CD_FLAG_FULL_CAPS_PAGE
},
1845 { "WPI CDS-32X", NULL
, IDE_CD_FLAG_FULL_CAPS_PAGE
},
1846 /* ACER/AOpen 24X CD-ROM has the speed fields byte-swapped. */
1847 { "", "241N", IDE_CD_FLAG_LE_SPEED_FIELDS
},
1849 * Some drives used by Apple don't advertise audio play
1850 * but they do support reading TOC & audio datas.
1852 { "MATSHITADVD-ROM SR-8187", NULL
, IDE_CD_FLAG_PLAY_AUDIO_OK
},
1853 { "MATSHITADVD-ROM SR-8186", NULL
, IDE_CD_FLAG_PLAY_AUDIO_OK
},
1854 { "MATSHITADVD-ROM SR-8176", NULL
, IDE_CD_FLAG_PLAY_AUDIO_OK
},
1855 { "MATSHITADVD-ROM SR-8174", NULL
, IDE_CD_FLAG_PLAY_AUDIO_OK
},
1856 { "Optiarc DVD RW AD-5200A", NULL
, IDE_CD_FLAG_PLAY_AUDIO_OK
},
1860 static unsigned int ide_cd_flags(struct hd_driveid
*id
)
1862 const struct cd_list_entry
*cle
= ide_cd_quirks_list
;
1864 while (cle
->id_model
) {
1865 if (strcmp(cle
->id_model
, id
->model
) == 0 &&
1866 (cle
->id_firmware
== NULL
||
1867 strstr(id
->fw_rev
, cle
->id_firmware
)))
1868 return cle
->cd_flags
;
1875 static int ide_cdrom_setup(ide_drive_t
*drive
)
1877 struct cdrom_info
*cd
= drive
->driver_data
;
1878 struct cdrom_device_info
*cdi
= &cd
->devinfo
;
1879 struct hd_driveid
*id
= drive
->id
;
1882 blk_queue_prep_rq(drive
->queue
, ide_cdrom_prep_fn
);
1883 blk_queue_dma_alignment(drive
->queue
, 31);
1884 drive
->queue
->unplug_delay
= (1 * HZ
) / 1000;
1885 if (!drive
->queue
->unplug_delay
)
1886 drive
->queue
->unplug_delay
= 1;
1888 drive
->special
.all
= 0;
1890 cd
->cd_flags
= IDE_CD_FLAG_MEDIA_CHANGED
| IDE_CD_FLAG_NO_EJECT
|
1893 if ((id
->config
& 0x0060) == 0x20)
1894 cd
->cd_flags
|= IDE_CD_FLAG_DRQ_INTERRUPT
;
1896 if ((cd
->cd_flags
& IDE_CD_FLAG_VERTOS_300_SSD
) &&
1897 id
->fw_rev
[4] == '1' && id
->fw_rev
[6] <= '2')
1898 cd
->cd_flags
|= (IDE_CD_FLAG_TOCTRACKS_AS_BCD
|
1899 IDE_CD_FLAG_TOCADDR_AS_BCD
);
1900 else if ((cd
->cd_flags
& IDE_CD_FLAG_VERTOS_600_ESD
) &&
1901 id
->fw_rev
[4] == '1' && id
->fw_rev
[6] <= '2')
1902 cd
->cd_flags
|= IDE_CD_FLAG_TOCTRACKS_AS_BCD
;
1903 else if (cd
->cd_flags
& IDE_CD_FLAG_SANYO_3CD
)
1904 /* 3 => use CD in slot 0 */
1905 cdi
->sanyo_slot
= 3;
1907 nslots
= ide_cdrom_probe_capabilities(drive
);
1909 /* set correct block size */
1910 blk_queue_hardsect_size(drive
->queue
, CD_FRAMESIZE
);
1912 if (drive
->autotune
== IDE_TUNE_DEFAULT
||
1913 drive
->autotune
== IDE_TUNE_AUTO
)
1914 drive
->dsc_overlap
= (drive
->next
!= drive
);
1916 if (ide_cdrom_register(drive
, nslots
)) {
1917 printk(KERN_ERR
"%s: %s failed to register device with the"
1918 " cdrom driver.\n", drive
->name
, __func__
);
1919 cd
->devinfo
.handle
= NULL
;
1922 ide_cdrom_add_settings(drive
);
1926 static void ide_cd_remove(ide_drive_t
*drive
)
1928 struct cdrom_info
*info
= drive
->driver_data
;
1930 ide_proc_unregister_driver(drive
, info
->driver
);
1932 del_gendisk(info
->disk
);
1937 static void ide_cd_release(struct kref
*kref
)
1939 struct cdrom_info
*info
= to_ide_cd(kref
);
1940 struct cdrom_device_info
*devinfo
= &info
->devinfo
;
1941 ide_drive_t
*drive
= info
->drive
;
1942 struct gendisk
*g
= info
->disk
;
1945 if (devinfo
->handle
== drive
)
1946 unregister_cdrom(devinfo
);
1947 drive
->dsc_overlap
= 0;
1948 drive
->driver_data
= NULL
;
1949 blk_queue_prep_rq(drive
->queue
, NULL
);
1950 g
->private_data
= NULL
;
1955 static int ide_cd_probe(ide_drive_t
*);
1957 static ide_driver_t ide_cdrom_driver
= {
1959 .owner
= THIS_MODULE
,
1960 .name
= "ide-cdrom",
1961 .bus
= &ide_bus_type
,
1963 .probe
= ide_cd_probe
,
1964 .remove
= ide_cd_remove
,
1965 .version
= IDECD_VERSION
,
1967 .supports_dsc_overlap
= 1,
1968 .do_request
= ide_do_rw_cdrom
,
1969 .end_request
= ide_end_request
,
1970 .error
= __ide_error
,
1971 .abort
= __ide_abort
,
1972 #ifdef CONFIG_IDE_PROC_FS
1977 static int idecd_open(struct inode
*inode
, struct file
*file
)
1979 struct gendisk
*disk
= inode
->i_bdev
->bd_disk
;
1980 struct cdrom_info
*info
;
1983 info
= ide_cd_get(disk
);
1987 rc
= cdrom_open(&info
->devinfo
, inode
, file
);
1995 static int idecd_release(struct inode
*inode
, struct file
*file
)
1997 struct gendisk
*disk
= inode
->i_bdev
->bd_disk
;
1998 struct cdrom_info
*info
= ide_cd_g(disk
);
2000 cdrom_release(&info
->devinfo
, file
);
2007 static int idecd_set_spindown(struct cdrom_device_info
*cdi
, unsigned long arg
)
2009 struct packet_command cgc
;
2014 if (copy_from_user(&spindown
, (void __user
*)arg
, sizeof(char)))
2017 init_cdrom_command(&cgc
, buffer
, sizeof(buffer
), CGC_DATA_UNKNOWN
);
2019 stat
= cdrom_mode_sense(cdi
, &cgc
, GPMODE_CDROM_PAGE
, 0);
2023 buffer
[11] = (buffer
[11] & 0xf0) | (spindown
& 0x0f);
2024 return cdrom_mode_select(cdi
, &cgc
);
2027 static int idecd_get_spindown(struct cdrom_device_info
*cdi
, unsigned long arg
)
2029 struct packet_command cgc
;
2034 init_cdrom_command(&cgc
, buffer
, sizeof(buffer
), CGC_DATA_UNKNOWN
);
2036 stat
= cdrom_mode_sense(cdi
, &cgc
, GPMODE_CDROM_PAGE
, 0);
2040 spindown
= buffer
[11] & 0x0f;
2041 if (copy_to_user((void __user
*)arg
, &spindown
, sizeof(char)))
2046 static int idecd_ioctl(struct inode
*inode
, struct file
*file
,
2047 unsigned int cmd
, unsigned long arg
)
2049 struct block_device
*bdev
= inode
->i_bdev
;
2050 struct cdrom_info
*info
= ide_cd_g(bdev
->bd_disk
);
2054 case CDROMSETSPINDOWN
:
2055 return idecd_set_spindown(&info
->devinfo
, arg
);
2056 case CDROMGETSPINDOWN
:
2057 return idecd_get_spindown(&info
->devinfo
, arg
);
2062 err
= generic_ide_ioctl(info
->drive
, file
, bdev
, cmd
, arg
);
2064 err
= cdrom_ioctl(file
, &info
->devinfo
, inode
, cmd
, arg
);
2069 static int idecd_media_changed(struct gendisk
*disk
)
2071 struct cdrom_info
*info
= ide_cd_g(disk
);
2072 return cdrom_media_changed(&info
->devinfo
);
2075 static int idecd_revalidate_disk(struct gendisk
*disk
)
2077 struct cdrom_info
*info
= ide_cd_g(disk
);
2078 struct request_sense sense
;
2080 ide_cd_read_toc(info
->drive
, &sense
);
2085 static struct block_device_operations idecd_ops
= {
2086 .owner
= THIS_MODULE
,
2088 .release
= idecd_release
,
2089 .ioctl
= idecd_ioctl
,
2090 .media_changed
= idecd_media_changed
,
2091 .revalidate_disk
= idecd_revalidate_disk
2094 /* module options */
2095 static char *ignore
;
2097 module_param(ignore
, charp
, 0400);
2098 MODULE_DESCRIPTION("ATAPI CD-ROM Driver");
2100 static int ide_cd_probe(ide_drive_t
*drive
)
2102 struct cdrom_info
*info
;
2104 struct request_sense sense
;
2106 if (!strstr("ide-cdrom", drive
->driver_req
))
2108 if (!drive
->present
)
2110 if (drive
->media
!= ide_cdrom
&& drive
->media
!= ide_optical
)
2112 /* skip drives that we were told to ignore */
2113 if (ignore
!= NULL
) {
2114 if (strstr(ignore
, drive
->name
)) {
2115 printk(KERN_INFO
"ide-cd: ignoring drive %s\n",
2121 printk(KERN_INFO
"ide-cd: passing drive %s to ide-scsi "
2122 "emulation.\n", drive
->name
);
2125 info
= kzalloc(sizeof(struct cdrom_info
), GFP_KERNEL
);
2127 printk(KERN_ERR
"%s: Can't allocate a cdrom structure\n",
2132 g
= alloc_disk(1 << PARTN_BITS
);
2136 ide_init_disk(g
, drive
);
2138 ide_proc_register_driver(drive
, &ide_cdrom_driver
);
2140 kref_init(&info
->kref
);
2142 info
->drive
= drive
;
2143 info
->driver
= &ide_cdrom_driver
;
2146 g
->private_data
= &info
->driver
;
2148 drive
->driver_data
= info
;
2151 g
->driverfs_dev
= &drive
->gendev
;
2152 g
->flags
= GENHD_FL_CD
| GENHD_FL_REMOVABLE
;
2153 if (ide_cdrom_setup(drive
)) {
2154 ide_proc_unregister_driver(drive
, &ide_cdrom_driver
);
2155 ide_cd_release(&info
->kref
);
2159 ide_cd_read_toc(drive
, &sense
);
2160 g
->fops
= &idecd_ops
;
2161 g
->flags
|= GENHD_FL_REMOVABLE
;
2171 static void __exit
ide_cdrom_exit(void)
2173 driver_unregister(&ide_cdrom_driver
.gen_driver
);
2176 static int __init
ide_cdrom_init(void)
2178 return driver_register(&ide_cdrom_driver
.gen_driver
);
2181 MODULE_ALIAS("ide:*m-cdrom*");
2182 MODULE_ALIAS("ide-cd");
2183 module_init(ide_cdrom_init
);
2184 module_exit(ide_cdrom_exit
);
2185 MODULE_LICENSE("GPL");