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
;
145 struct cdrom_info
*info
= drive
->driver_data
;
147 if (!cdrom_log_sense(drive
, failed_command
, sense
))
151 * If a read toc is executed for a CD-R or CD-RW medium where the first
152 * toc has not been recorded yet, it will fail with 05/24/00 (which is a
155 if (failed_command
&& failed_command
->cmd
[0] == GPCMD_READ_TOC_PMA_ATIP
)
156 if (sense
->sense_key
== 0x05 && sense
->asc
== 0x24)
160 if (sense
->error_code
== 0x70) {
161 switch (sense
->sense_key
) {
163 case VOLUME_OVERFLOW
:
164 case ILLEGAL_REQUEST
:
167 if (failed_command
== NULL
||
168 !blk_fs_request(failed_command
))
170 sector
= (sense
->information
[0] << 24) |
171 (sense
->information
[1] << 16) |
172 (sense
->information
[2] << 8) |
173 (sense
->information
[3]);
175 if (drive
->queue
->hardsect_size
== 2048)
176 /* device sector size is 2K */
179 bio_sectors
= max(bio_sectors(failed_command
->bio
), 4U);
180 sector
&= ~(bio_sectors
- 1);
182 if (sector
< get_capacity(info
->disk
) &&
183 drive
->probed_capacity
- sector
< 4 * 75)
184 set_capacity(info
->disk
, sector
);
188 ide_cd_log_error(drive
->name
, failed_command
, sense
);
191 static void cdrom_queue_request_sense(ide_drive_t
*drive
, void *sense
,
192 struct request
*failed_command
)
194 struct cdrom_info
*info
= drive
->driver_data
;
195 struct request
*rq
= &info
->request_sense_request
;
198 sense
= &info
->sense_data
;
200 /* stuff the sense request in front of our current request */
201 blk_rq_init(NULL
, rq
);
202 rq
->cmd_type
= REQ_TYPE_ATA_PC
;
203 rq
->rq_disk
= info
->disk
;
206 rq
->cmd
[0] = GPCMD_REQUEST_SENSE
;
210 rq
->cmd_type
= REQ_TYPE_SENSE
;
211 rq
->cmd_flags
|= REQ_PREEMPT
;
213 /* NOTE! Save the failed command in "rq->buffer" */
214 rq
->buffer
= (void *) failed_command
;
216 ide_do_drive_cmd(drive
, rq
);
219 static void cdrom_end_request(ide_drive_t
*drive
, int uptodate
)
221 struct request
*rq
= HWGROUP(drive
)->rq
;
222 int nsectors
= rq
->hard_cur_sectors
;
224 if (blk_sense_request(rq
) && uptodate
) {
226 * For REQ_TYPE_SENSE, "rq->buffer" points to the original
229 struct request
*failed
= (struct request
*) rq
->buffer
;
230 struct cdrom_info
*info
= drive
->driver_data
;
231 void *sense
= &info
->sense_data
;
236 sense
= failed
->sense
;
237 failed
->sense_len
= rq
->sense_len
;
239 cdrom_analyze_sense_data(drive
, failed
, sense
);
241 * now end the failed request
243 if (blk_fs_request(failed
)) {
244 if (ide_end_dequeued_request(drive
, failed
, 0,
245 failed
->hard_nr_sectors
))
248 spin_lock_irqsave(&ide_lock
, flags
);
249 if (__blk_end_request(failed
, -EIO
,
252 spin_unlock_irqrestore(&ide_lock
, flags
);
255 cdrom_analyze_sense_data(drive
, NULL
, sense
);
258 if (!rq
->current_nr_sectors
&& blk_fs_request(rq
))
260 /* make sure it's fully ended */
261 if (blk_pc_request(rq
))
262 nsectors
= (rq
->data_len
+ 511) >> 9;
266 ide_end_request(drive
, uptodate
, nsectors
);
269 static void ide_dump_status_no_sense(ide_drive_t
*drive
, const char *msg
, u8 st
)
273 ide_dump_status(drive
, msg
, st
);
278 * 0: if the request should be continued.
279 * 1: if the request was ended.
281 static int cdrom_decode_status(ide_drive_t
*drive
, int good_stat
, int *stat_ret
)
283 struct request
*rq
= HWGROUP(drive
)->rq
;
284 int stat
, err
, sense_key
;
286 /* check for errors */
287 stat
= ide_read_status(drive
);
292 if (OK_STAT(stat
, good_stat
, BAD_R_STAT
))
295 /* get the IDE error register */
296 err
= ide_read_error(drive
);
297 sense_key
= err
>> 4;
300 printk(KERN_ERR
"%s: missing rq in %s\n",
301 drive
->name
, __func__
);
305 if (blk_sense_request(rq
)) {
307 * We got an error trying to get sense info from the drive
308 * (probably while trying to recover from a former error).
311 rq
->cmd_flags
|= REQ_FAILED
;
312 cdrom_end_request(drive
, 0);
313 ide_error(drive
, "request sense failure", stat
);
316 } else if (blk_pc_request(rq
) || rq
->cmd_type
== REQ_TYPE_ATA_PC
) {
317 /* All other functions, except for READ. */
320 * if we have an error, pass back CHECK_CONDITION as the
323 if (blk_pc_request(rq
) && !rq
->errors
)
324 rq
->errors
= SAM_STAT_CHECK_CONDITION
;
326 /* check for tray open */
327 if (sense_key
== NOT_READY
) {
328 cdrom_saw_media_change(drive
);
329 } else if (sense_key
== UNIT_ATTENTION
) {
330 /* check for media change */
331 cdrom_saw_media_change(drive
);
333 } else if (sense_key
== ILLEGAL_REQUEST
&&
334 rq
->cmd
[0] == GPCMD_START_STOP_UNIT
) {
336 * Don't print error message for this condition--
337 * SFF8090i indicates that 5/24/00 is the correct
338 * response to a request to close the tray if the
339 * drive doesn't have that capability.
340 * cdrom_log_sense() knows this!
342 } else if (!(rq
->cmd_flags
& REQ_QUIET
)) {
343 /* otherwise, print an error */
344 ide_dump_status(drive
, "packet command error", stat
);
347 rq
->cmd_flags
|= REQ_FAILED
;
350 * instead of playing games with moving completions around,
351 * remove failed request completely and end it when the
352 * request sense has completed
356 } else if (blk_fs_request(rq
)) {
357 int do_end_request
= 0;
359 /* handle errors from READ and WRITE requests */
361 if (blk_noretry_request(rq
))
364 if (sense_key
== NOT_READY
) {
366 if (rq_data_dir(rq
) == READ
) {
367 cdrom_saw_media_change(drive
);
369 /* fail the request */
370 printk(KERN_ERR
"%s: tray open\n", drive
->name
);
373 struct cdrom_info
*info
= drive
->driver_data
;
376 * Allow the drive 5 seconds to recover, some
377 * devices will return this error while flushing
381 info
->write_timeout
= jiffies
+
382 ATAPI_WAIT_WRITE_BUSY
;
384 if (time_after(jiffies
, info
->write_timeout
))
390 * take a breather relying on the unplug
391 * timer to kick us again
393 spin_lock_irqsave(&ide_lock
, flags
);
394 blk_plug_device(drive
->queue
);
395 spin_unlock_irqrestore(&ide_lock
,
400 } else if (sense_key
== UNIT_ATTENTION
) {
402 cdrom_saw_media_change(drive
);
405 * Arrange to retry the request but be sure to give up
406 * if we've retried too many times.
408 if (++rq
->errors
> ERROR_MAX
)
410 } else if (sense_key
== ILLEGAL_REQUEST
||
411 sense_key
== DATA_PROTECT
) {
413 * No point in retrying after an illegal request or data
416 ide_dump_status_no_sense(drive
, "command error", stat
);
418 } else if (sense_key
== MEDIUM_ERROR
) {
420 * No point in re-trying a zillion times on a bad
421 * sector. If we got here the error is not correctable.
423 ide_dump_status_no_sense(drive
,
424 "media error (bad sector)",
427 } else if (sense_key
== BLANK_CHECK
) {
428 /* disk appears blank ?? */
429 ide_dump_status_no_sense(drive
, "media error (blank)",
432 } else if ((err
& ~ABRT_ERR
) != 0) {
433 /* go to the default handler for other errors */
434 ide_error(drive
, "cdrom_decode_status", stat
);
436 } else if ((++rq
->errors
> ERROR_MAX
)) {
437 /* we've racked up too many retries, abort */
442 * End a request through request sense analysis when we have
443 * sense data. We need this in order to perform end of media
450 * If we got a CHECK_CONDITION status, queue
451 * a request sense command.
454 cdrom_queue_request_sense(drive
, NULL
, NULL
);
456 blk_dump_rq_flags(rq
, "ide-cd: bad rq");
457 cdrom_end_request(drive
, 0);
460 /* retry, or handle the next request */
464 if (stat
& ERR_STAT
) {
467 spin_lock_irqsave(&ide_lock
, flags
);
468 blkdev_dequeue_request(rq
);
469 HWGROUP(drive
)->rq
= NULL
;
470 spin_unlock_irqrestore(&ide_lock
, flags
);
472 cdrom_queue_request_sense(drive
, rq
->sense
, rq
);
474 cdrom_end_request(drive
, 0);
479 static int cdrom_timer_expiry(ide_drive_t
*drive
)
481 struct request
*rq
= HWGROUP(drive
)->rq
;
482 unsigned long wait
= 0;
485 * Some commands are *slow* and normally take a long time to complete.
486 * Usually we can use the ATAPI "disconnect" to bypass this, but not all
487 * commands/drives support that. Let ide_timer_expiry keep polling us
490 switch (rq
->cmd
[0]) {
492 case GPCMD_FORMAT_UNIT
:
493 case GPCMD_RESERVE_RZONE_TRACK
:
494 case GPCMD_CLOSE_TRACK
:
495 case GPCMD_FLUSH_CACHE
:
496 wait
= ATAPI_WAIT_PC
;
499 if (!(rq
->cmd_flags
& REQ_QUIET
))
500 printk(KERN_INFO
"ide-cd: cmd 0x%x timed out\n",
509 * Set up the device registers for transferring a packet command on DEV,
510 * expecting to later transfer XFERLEN bytes. HANDLER is the routine
511 * which actually transfers the command to the drive. If this is a
512 * drq_interrupt device, this routine will arrange for HANDLER to be
513 * called when the interrupt from the drive arrives. Otherwise, HANDLER
514 * will be called immediately after the drive is prepared for the transfer.
516 static ide_startstop_t
cdrom_start_packet_command(ide_drive_t
*drive
,
518 ide_handler_t
*handler
)
520 ide_startstop_t startstop
;
521 struct cdrom_info
*info
= drive
->driver_data
;
522 ide_hwif_t
*hwif
= drive
->hwif
;
524 /* wait for the controller to be idle */
525 if (ide_wait_stat(&startstop
, drive
, 0, BUSY_STAT
, WAIT_READY
))
528 /* FIXME: for Virtual DMA we must check harder */
530 info
->dma
= !hwif
->dma_ops
->dma_setup(drive
);
532 /* set up the controller registers */
533 ide_pktcmd_tf_load(drive
, IDE_TFLAG_OUT_NSECT
| IDE_TFLAG_OUT_LBAL
,
536 if (info
->cd_flags
& IDE_CD_FLAG_DRQ_INTERRUPT
) {
537 /* waiting for CDB interrupt, not DMA yet. */
539 drive
->waiting_for_dma
= 0;
542 ide_execute_command(drive
, WIN_PACKETCMD
, handler
,
543 ATAPI_WAIT_PC
, cdrom_timer_expiry
);
546 ide_execute_pkt_cmd(drive
);
548 return (*handler
) (drive
);
553 * Send a packet command to DRIVE described by CMD_BUF and CMD_LEN. The device
554 * registers must have already been prepared by cdrom_start_packet_command.
555 * HANDLER is the interrupt handler to call when the command completes or
556 * there's data ready.
558 #define ATAPI_MIN_CDB_BYTES 12
559 static ide_startstop_t
cdrom_transfer_packet_command(ide_drive_t
*drive
,
561 ide_handler_t
*handler
)
563 ide_hwif_t
*hwif
= drive
->hwif
;
565 struct cdrom_info
*info
= drive
->driver_data
;
566 ide_startstop_t startstop
;
568 if (info
->cd_flags
& IDE_CD_FLAG_DRQ_INTERRUPT
) {
570 * Here we should have been called after receiving an interrupt
571 * from the device. DRQ should how be set.
574 /* check for errors */
575 if (cdrom_decode_status(drive
, DRQ_STAT
, NULL
))
578 /* ok, next interrupt will be DMA interrupt */
580 drive
->waiting_for_dma
= 1;
582 /* otherwise, we must wait for DRQ to get set */
583 if (ide_wait_stat(&startstop
, drive
, DRQ_STAT
,
584 BUSY_STAT
, WAIT_READY
))
588 /* arm the interrupt handler */
589 ide_set_handler(drive
, handler
, rq
->timeout
, cdrom_timer_expiry
);
591 /* ATAPI commands get padded out to 12 bytes minimum */
592 cmd_len
= COMMAND_SIZE(rq
->cmd
[0]);
593 if (cmd_len
< ATAPI_MIN_CDB_BYTES
)
594 cmd_len
= ATAPI_MIN_CDB_BYTES
;
596 /* send the command to the device */
597 hwif
->output_data(drive
, NULL
, rq
->cmd
, cmd_len
);
599 /* start the DMA if need be */
601 hwif
->dma_ops
->dma_start(drive
);
607 * Block read functions.
609 static void ide_cd_pad_transfer(ide_drive_t
*drive
, xfer_func_t
*xf
, int len
)
613 xf(drive
, NULL
, &dum
, sizeof(dum
));
618 static void ide_cd_drain_data(ide_drive_t
*drive
, int nsects
)
621 static char dum
[SECTOR_SIZE
];
623 drive
->hwif
->input_data(drive
, NULL
, dum
, sizeof(dum
));
629 * Check the contents of the interrupt reason register from the cdrom
630 * and attempt to recover if there are problems. Returns 0 if everything's
631 * ok; nonzero if the request has been terminated.
633 static int ide_cd_check_ireason(ide_drive_t
*drive
, struct request
*rq
,
634 int len
, int ireason
, int rw
)
637 * ireason == 0: the drive wants to receive data from us
638 * ireason == 2: the drive is expecting to transfer data to us
640 if (ireason
== (!rw
<< 1))
642 else if (ireason
== (rw
<< 1)) {
643 ide_hwif_t
*hwif
= drive
->hwif
;
647 printk(KERN_ERR
"%s: %s: wrong transfer direction!\n",
648 drive
->name
, __func__
);
650 xf
= rw
? hwif
->output_data
: hwif
->input_data
;
651 ide_cd_pad_transfer(drive
, xf
, len
);
652 } else if (rw
== 0 && ireason
== 1) {
654 * Some drives (ASUS) seem to tell us that status info is
655 * available. Just get it and ignore.
657 (void)ide_read_status(drive
);
660 /* drive wants a command packet, or invalid ireason... */
661 printk(KERN_ERR
"%s: %s: bad interrupt reason 0x%02x\n",
662 drive
->name
, __func__
, ireason
);
665 if (rq
->cmd_type
== REQ_TYPE_ATA_PC
)
666 rq
->cmd_flags
|= REQ_FAILED
;
668 cdrom_end_request(drive
, 0);
673 * Assume that the drive will always provide data in multiples of at least
674 * SECTOR_SIZE, as it gets hairy to keep track of the transfers otherwise.
676 static int ide_cd_check_transfer_size(ide_drive_t
*drive
, int len
)
678 struct cdrom_info
*cd
= drive
->driver_data
;
680 if ((len
% SECTOR_SIZE
) == 0)
683 printk(KERN_ERR
"%s: %s: Bad transfer size %d\n",
684 drive
->name
, __func__
, len
);
686 if (cd
->cd_flags
& IDE_CD_FLAG_LIMIT_NFRAMES
)
687 printk(KERN_ERR
" This drive is not supported by "
688 "this version of the driver\n");
690 printk(KERN_ERR
" Trying to limit transfer sizes\n");
691 cd
->cd_flags
|= IDE_CD_FLAG_LIMIT_NFRAMES
;
697 static ide_startstop_t
cdrom_newpc_intr(ide_drive_t
*);
700 * Routine to send a read/write packet command to the drive. This is usually
701 * called directly from cdrom_start_{read,write}(). However, for drq_interrupt
702 * devices, it is called from an interrupt when the drive is ready to accept
705 static ide_startstop_t
cdrom_start_rw_cont(ide_drive_t
*drive
)
707 struct request
*rq
= HWGROUP(drive
)->rq
;
709 if (rq_data_dir(rq
) == READ
) {
710 unsigned short sectors_per_frame
=
711 queue_hardsect_size(drive
->queue
) >> SECTOR_BITS
;
712 int nskip
= rq
->sector
& (sectors_per_frame
- 1);
715 * If the requested sector doesn't start on a frame boundary,
716 * we must adjust the start of the transfer so that it does,
717 * and remember to skip the first few sectors.
719 * If the rq->current_nr_sectors field is larger than the size
720 * of the buffer, it will mean that we're to skip a number of
721 * sectors equal to the amount by which rq->current_nr_sectors
722 * is larger than the buffer size.
725 /* sanity check... */
726 if (rq
->current_nr_sectors
!=
727 bio_cur_sectors(rq
->bio
)) {
728 printk(KERN_ERR
"%s: %s: buffer botch (%u)\n",
729 drive
->name
, __func__
,
730 rq
->current_nr_sectors
);
731 cdrom_end_request(drive
, 0);
734 rq
->current_nr_sectors
+= nskip
;
739 /* the immediate bit */
742 /* set up the command */
743 rq
->timeout
= ATAPI_WAIT_PC
;
745 /* send the command to the drive and return */
746 return cdrom_transfer_packet_command(drive
, rq
, cdrom_newpc_intr
);
749 #define IDECD_SEEK_THRESHOLD (1000) /* 1000 blocks */
750 #define IDECD_SEEK_TIMER (5 * WAIT_MIN_SLEEP) /* 100 ms */
751 #define IDECD_SEEK_TIMEOUT (2 * WAIT_CMD) /* 20 sec */
753 static ide_startstop_t
cdrom_seek_intr(ide_drive_t
*drive
)
755 struct cdrom_info
*info
= drive
->driver_data
;
757 static int retry
= 10;
759 if (cdrom_decode_status(drive
, 0, &stat
))
762 info
->cd_flags
|= IDE_CD_FLAG_SEEKING
;
764 if (retry
&& time_after(jiffies
, info
->start_seek
+ IDECD_SEEK_TIMER
)) {
766 drive
->dsc_overlap
= 0;
771 static ide_startstop_t
cdrom_start_seek_continuation(ide_drive_t
*drive
)
773 struct request
*rq
= HWGROUP(drive
)->rq
;
774 sector_t frame
= rq
->sector
;
776 sector_div(frame
, queue_hardsect_size(drive
->queue
) >> SECTOR_BITS
);
778 memset(rq
->cmd
, 0, BLK_MAX_CDB
);
779 rq
->cmd
[0] = GPCMD_SEEK
;
780 put_unaligned(cpu_to_be32(frame
), (unsigned int *) &rq
->cmd
[2]);
782 rq
->timeout
= ATAPI_WAIT_PC
;
783 return cdrom_transfer_packet_command(drive
, rq
, &cdrom_seek_intr
);
786 static ide_startstop_t
cdrom_start_seek(ide_drive_t
*drive
, unsigned int block
)
788 struct cdrom_info
*info
= drive
->driver_data
;
791 info
->start_seek
= jiffies
;
792 return cdrom_start_packet_command(drive
, 0,
793 cdrom_start_seek_continuation
);
797 * Fix up a possibly partially-processed request so that we can start it over
798 * entirely, or even put it back on the request queue.
800 static void restore_request(struct request
*rq
)
802 if (rq
->buffer
!= bio_data(rq
->bio
)) {
804 (rq
->buffer
- (char *)bio_data(rq
->bio
)) / SECTOR_SIZE
;
806 rq
->buffer
= bio_data(rq
->bio
);
810 rq
->current_nr_sectors
= bio_cur_sectors(rq
->bio
);
811 rq
->hard_cur_sectors
= rq
->current_nr_sectors
;
812 rq
->hard_nr_sectors
= rq
->nr_sectors
;
813 rq
->hard_sector
= rq
->sector
;
814 rq
->q
->prep_rq_fn(rq
->q
, rq
);
818 * All other packet commands.
820 static void ide_cd_request_sense_fixup(struct request
*rq
)
823 * Some of the trailing request sense fields are optional,
824 * and some drives don't send them. Sigh.
826 if (rq
->cmd
[0] == GPCMD_REQUEST_SENSE
&&
827 rq
->data_len
> 0 && rq
->data_len
<= 5)
828 while (rq
->data_len
> 0) {
829 *(u8
*)rq
->data
++ = 0;
834 int ide_cd_queue_pc(ide_drive_t
*drive
, const unsigned char *cmd
,
835 int write
, void *buffer
, unsigned *bufflen
,
836 struct request_sense
*sense
, int timeout
,
837 unsigned int cmd_flags
)
839 struct cdrom_info
*info
= drive
->driver_data
;
840 struct request_sense local_sense
;
842 unsigned int flags
= 0;
845 sense
= &local_sense
;
847 /* start of retry loop */
852 rq
= blk_get_request(drive
->queue
, write
, __GFP_WAIT
);
854 memcpy(rq
->cmd
, cmd
, BLK_MAX_CDB
);
855 rq
->cmd_type
= REQ_TYPE_ATA_PC
;
857 rq
->cmd_flags
|= cmd_flags
;
858 rq
->timeout
= timeout
;
861 rq
->data_len
= *bufflen
;
864 error
= blk_execute_rq(drive
->queue
, info
->disk
, rq
, 0);
867 *bufflen
= rq
->data_len
;
869 flags
= rq
->cmd_flags
;
873 * FIXME: we should probably abort/retry or something in case of
876 if (flags
& REQ_FAILED
) {
878 * The request failed. Retry if it was due to a unit
879 * attention status (usually means media was changed).
881 struct request_sense
*reqbuf
= sense
;
883 if (reqbuf
->sense_key
== UNIT_ATTENTION
)
884 cdrom_saw_media_change(drive
);
885 else if (reqbuf
->sense_key
== NOT_READY
&&
886 reqbuf
->asc
== 4 && reqbuf
->ascq
!= 4) {
888 * The drive is in the process of loading
889 * a disk. Retry, but wait a little to give
890 * the drive time to complete the load.
894 /* otherwise, don't retry */
900 /* end of retry loop */
901 } while ((flags
& REQ_FAILED
) && retries
>= 0);
903 /* return an error if the command failed */
904 return (flags
& REQ_FAILED
) ? -EIO
: 0;
908 * Called from blk_end_request_callback() after the data of the request is
909 * completed and before the request itself is completed. By returning value '1',
910 * blk_end_request_callback() returns immediately without completing it.
912 static int cdrom_newpc_intr_dummy_cb(struct request
*rq
)
917 static ide_startstop_t
cdrom_newpc_intr(ide_drive_t
*drive
)
919 ide_hwif_t
*hwif
= drive
->hwif
;
920 struct cdrom_info
*info
= drive
->driver_data
;
921 struct request
*rq
= HWGROUP(drive
)->rq
;
922 xfer_func_t
*xferfunc
;
923 ide_expiry_t
*expiry
= NULL
;
924 int dma_error
= 0, dma
, stat
, ireason
, len
, thislen
, uptodate
= 0;
925 int write
= (rq_data_dir(rq
) == WRITE
) ? 1 : 0;
926 unsigned int timeout
;
929 /* check for errors */
933 dma_error
= hwif
->dma_ops
->dma_end(drive
);
935 printk(KERN_ERR
"%s: DMA %s error\n", drive
->name
,
936 write
? "write" : "read");
941 if (cdrom_decode_status(drive
, 0, &stat
))
944 /* using dma, transfer is complete now */
947 return ide_error(drive
, "dma error", stat
);
948 if (blk_fs_request(rq
)) {
949 ide_end_request(drive
, 1, rq
->nr_sectors
);
955 /* ok we fall to pio :/ */
956 ireason
= hwif
->INB(hwif
->io_ports
.nsect_addr
) & 0x3;
957 lowcyl
= hwif
->INB(hwif
->io_ports
.lbam_addr
);
958 highcyl
= hwif
->INB(hwif
->io_ports
.lbah_addr
);
960 len
= lowcyl
+ (256 * highcyl
);
962 thislen
= blk_fs_request(rq
) ? len
: rq
->data_len
;
966 /* If DRQ is clear, the command has completed. */
967 if ((stat
& DRQ_STAT
) == 0) {
968 if (blk_fs_request(rq
)) {
970 * If we're not done reading/writing, complain.
971 * Otherwise, complete the command normally.
974 if (rq
->current_nr_sectors
> 0) {
975 printk(KERN_ERR
"%s: %s: data underrun "
977 drive
->name
, __func__
,
978 rq
->current_nr_sectors
);
980 rq
->cmd_flags
|= REQ_FAILED
;
983 cdrom_end_request(drive
, uptodate
);
985 } else if (!blk_pc_request(rq
)) {
986 ide_cd_request_sense_fixup(rq
);
987 /* complain if we still have data left to transfer */
988 uptodate
= rq
->data_len
? 0 : 1;
993 /* check which way to transfer data */
994 if (ide_cd_check_ireason(drive
, rq
, len
, ireason
, write
))
997 if (blk_fs_request(rq
)) {
1001 if (ide_cd_check_transfer_size(drive
, len
)) {
1002 cdrom_end_request(drive
, 0);
1007 * First, figure out if we need to bit-bucket
1008 * any of the leading sectors.
1010 nskip
= min_t(int, rq
->current_nr_sectors
1011 - bio_cur_sectors(rq
->bio
),
1014 ide_cd_drain_data(drive
, nskip
);
1015 rq
->current_nr_sectors
-= nskip
;
1016 thislen
-= (nskip
<< 9);
1023 xferfunc
= hwif
->output_data
;
1026 xferfunc
= hwif
->input_data
;
1030 while (thislen
> 0) {
1031 u8
*ptr
= blk_fs_request(rq
) ? NULL
: rq
->data
;
1032 int blen
= rq
->data_len
;
1036 if (blk_fs_request(rq
)) {
1038 blen
= rq
->current_nr_sectors
<< 9;
1040 ptr
= bio_data(rq
->bio
);
1041 blen
= bio_iovec(rq
->bio
)->bv_len
;
1046 if (blk_fs_request(rq
) && !write
)
1048 * If the buffers are full, pipe the rest into
1051 ide_cd_drain_data(drive
, thislen
>> 9);
1053 printk(KERN_ERR
"%s: confused, missing data\n",
1055 blk_dump_rq_flags(rq
, rq_data_dir(rq
)
1056 ? "cdrom_newpc_intr, write"
1057 : "cdrom_newpc_intr, read");
1065 xferfunc(drive
, NULL
, ptr
, blen
);
1070 if (blk_fs_request(rq
)) {
1072 rq
->nr_sectors
-= (blen
>> 9);
1073 rq
->current_nr_sectors
-= (blen
>> 9);
1074 rq
->sector
+= (blen
>> 9);
1076 if (rq
->current_nr_sectors
== 0 && rq
->nr_sectors
)
1077 cdrom_end_request(drive
, 1);
1079 rq
->data_len
-= blen
;
1082 * The request can't be completed until DRQ is cleared.
1083 * So complete the data, but don't complete the request
1084 * using the dummy function for the callback feature
1085 * of blk_end_request_callback().
1088 blk_end_request_callback(rq
, 0, blen
,
1089 cdrom_newpc_intr_dummy_cb
);
1093 if (!write
&& blk_sense_request(rq
))
1094 rq
->sense_len
+= blen
;
1097 /* pad, if necessary */
1098 if (!blk_fs_request(rq
) && len
> 0)
1099 ide_cd_pad_transfer(drive
, xferfunc
, len
);
1101 if (blk_pc_request(rq
)) {
1102 timeout
= rq
->timeout
;
1104 timeout
= ATAPI_WAIT_PC
;
1105 if (!blk_fs_request(rq
))
1106 expiry
= cdrom_timer_expiry
;
1109 ide_set_handler(drive
, cdrom_newpc_intr
, timeout
, expiry
);
1113 if (blk_pc_request(rq
)) {
1114 unsigned long flags
;
1115 unsigned int dlen
= rq
->data_len
;
1120 spin_lock_irqsave(&ide_lock
, flags
);
1121 if (__blk_end_request(rq
, 0, dlen
))
1123 HWGROUP(drive
)->rq
= NULL
;
1124 spin_unlock_irqrestore(&ide_lock
, flags
);
1127 rq
->cmd_flags
|= REQ_FAILED
;
1128 cdrom_end_request(drive
, uptodate
);
1133 static ide_startstop_t
cdrom_start_rw(ide_drive_t
*drive
, struct request
*rq
)
1135 struct cdrom_info
*cd
= drive
->driver_data
;
1136 int write
= rq_data_dir(rq
) == WRITE
;
1137 unsigned short sectors_per_frame
=
1138 queue_hardsect_size(drive
->queue
) >> SECTOR_BITS
;
1141 /* disk has become write protected */
1142 if (cd
->disk
->policy
) {
1143 cdrom_end_request(drive
, 0);
1148 * We may be retrying this request after an error. Fix up any
1149 * weirdness which might be present in the request packet.
1151 restore_request(rq
);
1154 /* use DMA, if possible / writes *must* be hardware frame aligned */
1155 if ((rq
->nr_sectors
& (sectors_per_frame
- 1)) ||
1156 (rq
->sector
& (sectors_per_frame
- 1))) {
1158 cdrom_end_request(drive
, 0);
1163 cd
->dma
= drive
->using_dma
;
1166 cd
->devinfo
.media_written
= 1;
1168 /* start sending the read/write request to the drive */
1169 return cdrom_start_packet_command(drive
, 32768, cdrom_start_rw_cont
);
1172 static ide_startstop_t
cdrom_do_newpc_cont(ide_drive_t
*drive
)
1174 struct request
*rq
= HWGROUP(drive
)->rq
;
1177 rq
->timeout
= ATAPI_WAIT_PC
;
1179 return cdrom_transfer_packet_command(drive
, rq
, cdrom_newpc_intr
);
1182 static ide_startstop_t
cdrom_do_block_pc(ide_drive_t
*drive
, struct request
*rq
)
1184 struct cdrom_info
*info
= drive
->driver_data
;
1186 if (blk_pc_request(rq
))
1187 rq
->cmd_flags
|= REQ_QUIET
;
1189 rq
->cmd_flags
&= ~REQ_FAILED
;
1195 int mask
= drive
->queue
->dma_alignment
;
1196 unsigned long addr
=
1197 (unsigned long)page_address(bio_page(rq
->bio
));
1198 unsigned long stack_mask
= ~(THREAD_SIZE
- 1);
1200 info
->dma
= drive
->using_dma
;
1203 * check if dma is safe
1205 * NOTE! The "len" and "addr" checks should possibly have
1208 if ((rq
->data_len
& 15) || (addr
& mask
))
1211 if (!((addr
& stack_mask
) ^
1212 ((unsigned long)current
->stack
& stack_mask
)))
1216 /* start sending the command to the drive */
1217 return cdrom_start_packet_command(drive
, rq
->data_len
,
1218 cdrom_do_newpc_cont
);
1222 * cdrom driver request routine.
1224 static ide_startstop_t
ide_do_rw_cdrom(ide_drive_t
*drive
, struct request
*rq
,
1227 ide_startstop_t action
;
1228 struct cdrom_info
*info
= drive
->driver_data
;
1230 if (blk_fs_request(rq
)) {
1231 if (info
->cd_flags
& IDE_CD_FLAG_SEEKING
) {
1232 unsigned long elapsed
= jiffies
- info
->start_seek
;
1233 int stat
= ide_read_status(drive
);
1235 if ((stat
& SEEK_STAT
) != SEEK_STAT
) {
1236 if (elapsed
< IDECD_SEEK_TIMEOUT
) {
1237 ide_stall_queue(drive
,
1241 printk(KERN_ERR
"%s: DSC timeout\n",
1244 info
->cd_flags
&= ~IDE_CD_FLAG_SEEKING
;
1246 if (rq_data_dir(rq
) == READ
&&
1247 IDE_LARGE_SEEK(info
->last_block
, block
,
1248 IDECD_SEEK_THRESHOLD
) &&
1250 action
= cdrom_start_seek(drive
, block
);
1252 action
= cdrom_start_rw(drive
, rq
);
1253 info
->last_block
= block
;
1255 } else if (blk_sense_request(rq
) || blk_pc_request(rq
) ||
1256 rq
->cmd_type
== REQ_TYPE_ATA_PC
) {
1257 return cdrom_do_block_pc(drive
, rq
);
1258 } else if (blk_special_request(rq
)) {
1259 /* right now this can only be a reset... */
1260 cdrom_end_request(drive
, 1);
1264 blk_dump_rq_flags(rq
, "ide-cd bad flags");
1265 cdrom_end_request(drive
, 0);
1274 * Routines which queue packet commands take as a final argument a pointer to a
1275 * request_sense struct. If execution of the command results in an error with a
1276 * CHECK CONDITION status, this structure will be filled with the results of the
1277 * subsequent request sense command. The pointer can also be NULL, in which case
1278 * no sense information is returned.
1280 static void msf_from_bcd(struct atapi_msf
*msf
)
1282 msf
->minute
= BCD2BIN(msf
->minute
);
1283 msf
->second
= BCD2BIN(msf
->second
);
1284 msf
->frame
= BCD2BIN(msf
->frame
);
1287 int cdrom_check_status(ide_drive_t
*drive
, struct request_sense
*sense
)
1289 struct cdrom_info
*info
= drive
->driver_data
;
1290 struct cdrom_device_info
*cdi
= &info
->devinfo
;
1291 unsigned char cmd
[BLK_MAX_CDB
];
1293 memset(cmd
, 0, BLK_MAX_CDB
);
1294 cmd
[0] = GPCMD_TEST_UNIT_READY
;
1297 * Sanyo 3 CD changer uses byte 7 of TEST_UNIT_READY to switch CDs
1298 * instead of supporting the LOAD_UNLOAD opcode.
1300 cmd
[7] = cdi
->sanyo_slot
% 3;
1302 return ide_cd_queue_pc(drive
, cmd
, 0, NULL
, 0, sense
, 0, REQ_QUIET
);
1305 static int cdrom_read_capacity(ide_drive_t
*drive
, unsigned long *capacity
,
1306 unsigned long *sectors_per_frame
,
1307 struct request_sense
*sense
)
1315 unsigned char cmd
[BLK_MAX_CDB
];
1316 unsigned len
= sizeof(capbuf
);
1318 memset(cmd
, 0, BLK_MAX_CDB
);
1319 cmd
[0] = GPCMD_READ_CDVD_CAPACITY
;
1321 stat
= ide_cd_queue_pc(drive
, cmd
, 0, &capbuf
, &len
, sense
, 0,
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
)
1336 unsigned char cmd
[BLK_MAX_CDB
];
1338 memset(cmd
, 0, BLK_MAX_CDB
);
1340 cmd
[0] = GPCMD_READ_TOC_PMA_ATIP
;
1342 cmd
[7] = (buflen
>> 8);
1343 cmd
[8] = (buflen
& 0xff);
1344 cmd
[9] = (format
<< 6);
1349 return ide_cd_queue_pc(drive
, cmd
, 0, buf
, &buflen
, sense
, 0, REQ_QUIET
);
1352 /* Try to read the entire TOC for the disk into our internal buffer. */
1353 int ide_cd_read_toc(ide_drive_t
*drive
, struct request_sense
*sense
)
1355 int stat
, ntracks
, i
;
1356 struct cdrom_info
*info
= drive
->driver_data
;
1357 struct cdrom_device_info
*cdi
= &info
->devinfo
;
1358 struct atapi_toc
*toc
= info
->toc
;
1360 struct atapi_toc_header hdr
;
1361 struct atapi_toc_entry ent
;
1364 unsigned long sectors_per_frame
= SECTORS_PER_FRAME
;
1367 /* try to allocate space */
1368 toc
= kmalloc(sizeof(struct atapi_toc
), GFP_KERNEL
);
1370 printk(KERN_ERR
"%s: No cdrom TOC buffer!\n",
1378 * Check to see if the existing data is still valid. If it is,
1381 (void) cdrom_check_status(drive
, sense
);
1383 if (info
->cd_flags
& IDE_CD_FLAG_TOC_VALID
)
1386 /* try to get the total cdrom capacity and sector size */
1387 stat
= cdrom_read_capacity(drive
, &toc
->capacity
, §ors_per_frame
,
1390 toc
->capacity
= 0x1fffff;
1392 set_capacity(info
->disk
, toc
->capacity
* sectors_per_frame
);
1393 /* save a private copy of the TOC capacity for error handling */
1394 drive
->probed_capacity
= toc
->capacity
* sectors_per_frame
;
1396 blk_queue_hardsect_size(drive
->queue
,
1397 sectors_per_frame
<< SECTOR_BITS
);
1399 /* first read just the header, so we know how long the TOC is */
1400 stat
= cdrom_read_tocentry(drive
, 0, 1, 0, (char *) &toc
->hdr
,
1401 sizeof(struct atapi_toc_header
), sense
);
1405 if (info
->cd_flags
& IDE_CD_FLAG_TOCTRACKS_AS_BCD
) {
1406 toc
->hdr
.first_track
= BCD2BIN(toc
->hdr
.first_track
);
1407 toc
->hdr
.last_track
= BCD2BIN(toc
->hdr
.last_track
);
1410 ntracks
= toc
->hdr
.last_track
- toc
->hdr
.first_track
+ 1;
1413 if (ntracks
> MAX_TRACKS
)
1414 ntracks
= MAX_TRACKS
;
1416 /* now read the whole schmeer */
1417 stat
= cdrom_read_tocentry(drive
, toc
->hdr
.first_track
, 1, 0,
1419 sizeof(struct atapi_toc_header
) +
1421 sizeof(struct atapi_toc_entry
), sense
);
1423 if (stat
&& toc
->hdr
.first_track
> 1) {
1425 * Cds with CDI tracks only don't have any TOC entries, despite
1426 * of this the returned values are
1427 * first_track == last_track = number of CDI tracks + 1,
1428 * so that this case is indistinguishable from the same layout
1429 * plus an additional audio track. If we get an error for the
1430 * regular case, we assume a CDI without additional audio
1431 * tracks. In this case the readable TOC is empty (CDI tracks
1432 * are not included) and only holds the Leadout entry.
1437 stat
= cdrom_read_tocentry(drive
, CDROM_LEADOUT
, 1, 0,
1439 sizeof(struct atapi_toc_header
) +
1441 sizeof(struct atapi_toc_entry
),
1446 if (info
->cd_flags
& IDE_CD_FLAG_TOCTRACKS_AS_BCD
) {
1447 toc
->hdr
.first_track
= (u8
)BIN2BCD(CDROM_LEADOUT
);
1448 toc
->hdr
.last_track
= (u8
)BIN2BCD(CDROM_LEADOUT
);
1450 toc
->hdr
.first_track
= CDROM_LEADOUT
;
1451 toc
->hdr
.last_track
= CDROM_LEADOUT
;
1458 toc
->hdr
.toc_length
= be16_to_cpu(toc
->hdr
.toc_length
);
1460 if (info
->cd_flags
& IDE_CD_FLAG_TOCTRACKS_AS_BCD
) {
1461 toc
->hdr
.first_track
= BCD2BIN(toc
->hdr
.first_track
);
1462 toc
->hdr
.last_track
= BCD2BIN(toc
->hdr
.last_track
);
1465 for (i
= 0; i
<= ntracks
; i
++) {
1466 if (info
->cd_flags
& IDE_CD_FLAG_TOCADDR_AS_BCD
) {
1467 if (info
->cd_flags
& IDE_CD_FLAG_TOCTRACKS_AS_BCD
)
1468 toc
->ent
[i
].track
= BCD2BIN(toc
->ent
[i
].track
);
1469 msf_from_bcd(&toc
->ent
[i
].addr
.msf
);
1471 toc
->ent
[i
].addr
.lba
= msf_to_lba(toc
->ent
[i
].addr
.msf
.minute
,
1472 toc
->ent
[i
].addr
.msf
.second
,
1473 toc
->ent
[i
].addr
.msf
.frame
);
1476 if (toc
->hdr
.first_track
!= CDROM_LEADOUT
) {
1477 /* read the multisession information */
1478 stat
= cdrom_read_tocentry(drive
, 0, 0, 1, (char *)&ms_tmp
,
1479 sizeof(ms_tmp
), sense
);
1483 toc
->last_session_lba
= be32_to_cpu(ms_tmp
.ent
.addr
.lba
);
1485 ms_tmp
.hdr
.last_track
= CDROM_LEADOUT
;
1486 ms_tmp
.hdr
.first_track
= ms_tmp
.hdr
.last_track
;
1487 toc
->last_session_lba
= msf_to_lba(0, 2, 0); /* 0m 2s 0f */
1490 if (info
->cd_flags
& IDE_CD_FLAG_TOCADDR_AS_BCD
) {
1491 /* re-read multisession information using MSF format */
1492 stat
= cdrom_read_tocentry(drive
, 0, 1, 1, (char *)&ms_tmp
,
1493 sizeof(ms_tmp
), sense
);
1497 msf_from_bcd(&ms_tmp
.ent
.addr
.msf
);
1498 toc
->last_session_lba
= msf_to_lba(ms_tmp
.ent
.addr
.msf
.minute
,
1499 ms_tmp
.ent
.addr
.msf
.second
,
1500 ms_tmp
.ent
.addr
.msf
.frame
);
1503 toc
->xa_flag
= (ms_tmp
.hdr
.first_track
!= ms_tmp
.hdr
.last_track
);
1505 /* now try to get the total cdrom capacity */
1506 stat
= cdrom_get_last_written(cdi
, &last_written
);
1507 if (!stat
&& (last_written
> toc
->capacity
)) {
1508 toc
->capacity
= last_written
;
1509 set_capacity(info
->disk
, toc
->capacity
* sectors_per_frame
);
1510 drive
->probed_capacity
= toc
->capacity
* sectors_per_frame
;
1513 /* Remember that we've read this stuff. */
1514 info
->cd_flags
|= IDE_CD_FLAG_TOC_VALID
;
1519 int ide_cdrom_get_capabilities(ide_drive_t
*drive
, u8
*buf
)
1521 struct cdrom_info
*info
= drive
->driver_data
;
1522 struct cdrom_device_info
*cdi
= &info
->devinfo
;
1523 struct packet_command cgc
;
1524 int stat
, attempts
= 3, size
= ATAPI_CAPABILITIES_PAGE_SIZE
;
1526 if ((info
->cd_flags
& IDE_CD_FLAG_FULL_CAPS_PAGE
) == 0)
1527 size
-= ATAPI_CAPABILITIES_PAGE_PAD_SIZE
;
1529 init_cdrom_command(&cgc
, buf
, size
, CGC_DATA_UNKNOWN
);
1531 /* we seem to get stat=0x01,err=0x00 the first time (??) */
1532 stat
= cdrom_mode_sense(cdi
, &cgc
, GPMODE_CAPABILITIES_PAGE
, 0);
1535 } while (--attempts
);
1539 void ide_cdrom_update_speed(ide_drive_t
*drive
, u8
*buf
)
1541 struct cdrom_info
*cd
= drive
->driver_data
;
1542 u16 curspeed
, maxspeed
;
1544 curspeed
= *(u16
*)&buf
[8 + 14];
1545 maxspeed
= *(u16
*)&buf
[8 + 8];
1547 if (cd
->cd_flags
& IDE_CD_FLAG_LE_SPEED_FIELDS
) {
1548 curspeed
= le16_to_cpu(curspeed
);
1549 maxspeed
= le16_to_cpu(maxspeed
);
1551 curspeed
= be16_to_cpu(curspeed
);
1552 maxspeed
= be16_to_cpu(maxspeed
);
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 (info
->cd_flags
& IDE_CD_FLAG_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 (cd
->cd_flags
& IDE_CD_FLAG_PRE_ATAPI12
) {
1620 cd
->cd_flags
&= ~IDE_CD_FLAG_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 cd
->cd_flags
|= IDE_CD_FLAG_NO_DOORLOCK
;
1639 if (buf
[8 + 6] & 0x08)
1640 cd
->cd_flags
&= ~IDE_CD_FLAG_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) || (cd
->cd_flags
& IDE_CD_FLAG_PLAY_AUDIO_OK
))
1652 cdi
->mask
&= ~CDC_PLAY_AUDIO
;
1654 mechtype
= buf
[8 + 6] >> 5;
1655 if (mechtype
== mechtype_caddy
|| mechtype
== mechtype_popup
)
1656 cdi
->mask
|= CDC_CLOSE_TRAY
;
1658 if (cdi
->sanyo_slot
> 0) {
1659 cdi
->mask
&= ~CDC_SELECT_DISC
;
1661 } else if (mechtype
== mechtype_individual_changer
||
1662 mechtype
== mechtype_cartridge_changer
) {
1663 nslots
= cdrom_number_of_slots(cdi
);
1665 cdi
->mask
&= ~CDC_SELECT_DISC
;
1668 ide_cdrom_update_speed(drive
, buf
);
1670 printk(KERN_INFO
"%s: ATAPI", drive
->name
);
1672 /* don't print speed if the drive reported 0 */
1674 printk(KERN_CONT
" %dX", cd
->max_speed
);
1676 printk(KERN_CONT
" %s", (cdi
->mask
& CDC_DVD
) ? "CD-ROM" : "DVD-ROM");
1678 if ((cdi
->mask
& CDC_DVD_R
) == 0 || (cdi
->mask
& CDC_DVD_RAM
) == 0)
1679 printk(KERN_CONT
" DVD%s%s",
1680 (cdi
->mask
& CDC_DVD_R
) ? "" : "-R",
1681 (cdi
->mask
& CDC_DVD_RAM
) ? "" : "-RAM");
1683 if ((cdi
->mask
& CDC_CD_R
) == 0 || (cdi
->mask
& CDC_CD_RW
) == 0)
1684 printk(KERN_CONT
" CD%s%s",
1685 (cdi
->mask
& CDC_CD_R
) ? "" : "-R",
1686 (cdi
->mask
& CDC_CD_RW
) ? "" : "/RW");
1688 if ((cdi
->mask
& CDC_SELECT_DISC
) == 0)
1689 printk(KERN_CONT
" changer w/%d slots", nslots
);
1691 printk(KERN_CONT
" drive");
1693 printk(KERN_CONT
", %dkB Cache\n", be16_to_cpu(*(u16
*)&buf
[8 + 12]));
1698 /* standard prep_rq_fn that builds 10 byte cmds */
1699 static int ide_cdrom_prep_fs(struct request_queue
*q
, struct request
*rq
)
1701 int hard_sect
= queue_hardsect_size(q
);
1702 long block
= (long)rq
->hard_sector
/ (hard_sect
>> 9);
1703 unsigned long blocks
= rq
->hard_nr_sectors
/ (hard_sect
>> 9);
1705 memset(rq
->cmd
, 0, BLK_MAX_CDB
);
1707 if (rq_data_dir(rq
) == READ
)
1708 rq
->cmd
[0] = GPCMD_READ_10
;
1710 rq
->cmd
[0] = GPCMD_WRITE_10
;
1715 rq
->cmd
[2] = (block
>> 24) & 0xff;
1716 rq
->cmd
[3] = (block
>> 16) & 0xff;
1717 rq
->cmd
[4] = (block
>> 8) & 0xff;
1718 rq
->cmd
[5] = block
& 0xff;
1721 * and transfer length
1723 rq
->cmd
[7] = (blocks
>> 8) & 0xff;
1724 rq
->cmd
[8] = blocks
& 0xff;
1730 * Most of the SCSI commands are supported directly by ATAPI devices.
1731 * This transform handles the few exceptions.
1733 static int ide_cdrom_prep_pc(struct request
*rq
)
1737 /* transform 6-byte read/write commands to the 10-byte version */
1738 if (c
[0] == READ_6
|| c
[0] == WRITE_6
) {
1745 c
[0] += (READ_10
- READ_6
);
1751 * it's silly to pretend we understand 6-byte sense commands, just
1752 * reject with ILLEGAL_REQUEST and the caller should take the
1753 * appropriate action
1755 if (c
[0] == MODE_SENSE
|| c
[0] == MODE_SELECT
) {
1756 rq
->errors
= ILLEGAL_REQUEST
;
1757 return BLKPREP_KILL
;
1763 static int ide_cdrom_prep_fn(struct request_queue
*q
, struct request
*rq
)
1765 if (blk_fs_request(rq
))
1766 return ide_cdrom_prep_fs(q
, rq
);
1767 else if (blk_pc_request(rq
))
1768 return ide_cdrom_prep_pc(rq
);
1773 struct cd_list_entry
{
1774 const char *id_model
;
1775 const char *id_firmware
;
1776 unsigned int cd_flags
;
1779 #ifdef CONFIG_IDE_PROC_FS
1780 static sector_t
ide_cdrom_capacity(ide_drive_t
*drive
)
1782 unsigned long capacity
, sectors_per_frame
;
1784 if (cdrom_read_capacity(drive
, &capacity
, §ors_per_frame
, NULL
))
1787 return capacity
* sectors_per_frame
;
1790 static int proc_idecd_read_capacity(char *page
, char **start
, off_t off
,
1791 int count
, int *eof
, void *data
)
1793 ide_drive_t
*drive
= data
;
1796 len
= sprintf(page
, "%llu\n", (long long)ide_cdrom_capacity(drive
));
1797 PROC_IDE_READ_RETURN(page
, start
, off
, count
, eof
, len
);
1800 static ide_proc_entry_t idecd_proc
[] = {
1801 { "capacity", S_IFREG
|S_IRUGO
, proc_idecd_read_capacity
, NULL
},
1802 { NULL
, 0, NULL
, NULL
}
1805 static void ide_cdrom_add_settings(ide_drive_t
*drive
)
1807 ide_add_setting(drive
, "dsc_overlap", SETTING_RW
, TYPE_BYTE
, 0, 1, 1, 1,
1808 &drive
->dsc_overlap
, NULL
);
1811 static inline void ide_cdrom_add_settings(ide_drive_t
*drive
) { ; }
1814 static const struct cd_list_entry ide_cd_quirks_list
[] = {
1815 /* Limit transfer size per interrupt. */
1816 { "SAMSUNG CD-ROM SCR-2430", NULL
, IDE_CD_FLAG_LIMIT_NFRAMES
},
1817 { "SAMSUNG CD-ROM SCR-2432", NULL
, IDE_CD_FLAG_LIMIT_NFRAMES
},
1818 /* SCR-3231 doesn't support the SET_CD_SPEED command. */
1819 { "SAMSUNG CD-ROM SCR-3231", NULL
, IDE_CD_FLAG_NO_SPEED_SELECT
},
1820 /* Old NEC260 (not R) was released before ATAPI 1.2 spec. */
1821 { "NEC CD-ROM DRIVE:260", "1.01", IDE_CD_FLAG_TOCADDR_AS_BCD
|
1822 IDE_CD_FLAG_PRE_ATAPI12
, },
1823 /* Vertos 300, some versions of this drive like to talk BCD. */
1824 { "V003S0DS", NULL
, IDE_CD_FLAG_VERTOS_300_SSD
, },
1825 /* Vertos 600 ESD. */
1826 { "V006E0DS", NULL
, IDE_CD_FLAG_VERTOS_600_ESD
, },
1828 * Sanyo 3 CD changer uses a non-standard command for CD changing
1829 * (by default standard ATAPI support for CD changers is used).
1831 { "CD-ROM CDR-C3 G", NULL
, IDE_CD_FLAG_SANYO_3CD
},
1832 { "CD-ROM CDR-C3G", NULL
, IDE_CD_FLAG_SANYO_3CD
},
1833 { "CD-ROM CDR_C36", NULL
, IDE_CD_FLAG_SANYO_3CD
},
1834 /* Stingray 8X CD-ROM. */
1835 { "STINGRAY 8422 IDE 8X CD-ROM 7-27-95", NULL
, IDE_CD_FLAG_PRE_ATAPI12
},
1837 * ACER 50X CD-ROM and WPI 32X CD-ROM require the full spec length
1838 * mode sense page capabilities size, but older drives break.
1840 { "ATAPI CD ROM DRIVE 50X MAX", NULL
, IDE_CD_FLAG_FULL_CAPS_PAGE
},
1841 { "WPI CDS-32X", NULL
, IDE_CD_FLAG_FULL_CAPS_PAGE
},
1842 /* ACER/AOpen 24X CD-ROM has the speed fields byte-swapped. */
1843 { "", "241N", IDE_CD_FLAG_LE_SPEED_FIELDS
},
1845 * Some drives used by Apple don't advertise audio play
1846 * but they do support reading TOC & audio datas.
1848 { "MATSHITADVD-ROM SR-8187", NULL
, IDE_CD_FLAG_PLAY_AUDIO_OK
},
1849 { "MATSHITADVD-ROM SR-8186", NULL
, IDE_CD_FLAG_PLAY_AUDIO_OK
},
1850 { "MATSHITADVD-ROM SR-8176", NULL
, IDE_CD_FLAG_PLAY_AUDIO_OK
},
1851 { "MATSHITADVD-ROM SR-8174", NULL
, IDE_CD_FLAG_PLAY_AUDIO_OK
},
1852 { "Optiarc DVD RW AD-5200A", NULL
, IDE_CD_FLAG_PLAY_AUDIO_OK
},
1856 static unsigned int ide_cd_flags(struct hd_driveid
*id
)
1858 const struct cd_list_entry
*cle
= ide_cd_quirks_list
;
1860 while (cle
->id_model
) {
1861 if (strcmp(cle
->id_model
, id
->model
) == 0 &&
1862 (cle
->id_firmware
== NULL
||
1863 strstr(id
->fw_rev
, cle
->id_firmware
)))
1864 return cle
->cd_flags
;
1871 static int ide_cdrom_setup(ide_drive_t
*drive
)
1873 struct cdrom_info
*cd
= drive
->driver_data
;
1874 struct cdrom_device_info
*cdi
= &cd
->devinfo
;
1875 struct hd_driveid
*id
= drive
->id
;
1878 blk_queue_prep_rq(drive
->queue
, ide_cdrom_prep_fn
);
1879 blk_queue_dma_alignment(drive
->queue
, 31);
1880 drive
->queue
->unplug_delay
= (1 * HZ
) / 1000;
1881 if (!drive
->queue
->unplug_delay
)
1882 drive
->queue
->unplug_delay
= 1;
1884 drive
->special
.all
= 0;
1886 cd
->cd_flags
= IDE_CD_FLAG_MEDIA_CHANGED
| IDE_CD_FLAG_NO_EJECT
|
1889 if ((id
->config
& 0x0060) == 0x20)
1890 cd
->cd_flags
|= IDE_CD_FLAG_DRQ_INTERRUPT
;
1892 if ((cd
->cd_flags
& IDE_CD_FLAG_VERTOS_300_SSD
) &&
1893 id
->fw_rev
[4] == '1' && id
->fw_rev
[6] <= '2')
1894 cd
->cd_flags
|= (IDE_CD_FLAG_TOCTRACKS_AS_BCD
|
1895 IDE_CD_FLAG_TOCADDR_AS_BCD
);
1896 else if ((cd
->cd_flags
& IDE_CD_FLAG_VERTOS_600_ESD
) &&
1897 id
->fw_rev
[4] == '1' && id
->fw_rev
[6] <= '2')
1898 cd
->cd_flags
|= IDE_CD_FLAG_TOCTRACKS_AS_BCD
;
1899 else if (cd
->cd_flags
& IDE_CD_FLAG_SANYO_3CD
)
1900 /* 3 => use CD in slot 0 */
1901 cdi
->sanyo_slot
= 3;
1903 nslots
= ide_cdrom_probe_capabilities(drive
);
1905 /* set correct block size */
1906 blk_queue_hardsect_size(drive
->queue
, CD_FRAMESIZE
);
1908 drive
->dsc_overlap
= (drive
->next
!= drive
);
1910 if (ide_cdrom_register(drive
, nslots
)) {
1911 printk(KERN_ERR
"%s: %s failed to register device with the"
1912 " cdrom driver.\n", drive
->name
, __func__
);
1913 cd
->devinfo
.handle
= NULL
;
1916 ide_cdrom_add_settings(drive
);
1920 static void ide_cd_remove(ide_drive_t
*drive
)
1922 struct cdrom_info
*info
= drive
->driver_data
;
1924 ide_proc_unregister_driver(drive
, info
->driver
);
1926 del_gendisk(info
->disk
);
1931 static void ide_cd_release(struct kref
*kref
)
1933 struct cdrom_info
*info
= to_ide_cd(kref
);
1934 struct cdrom_device_info
*devinfo
= &info
->devinfo
;
1935 ide_drive_t
*drive
= info
->drive
;
1936 struct gendisk
*g
= info
->disk
;
1939 if (devinfo
->handle
== drive
)
1940 unregister_cdrom(devinfo
);
1941 drive
->dsc_overlap
= 0;
1942 drive
->driver_data
= NULL
;
1943 blk_queue_prep_rq(drive
->queue
, NULL
);
1944 g
->private_data
= NULL
;
1949 static int ide_cd_probe(ide_drive_t
*);
1951 static ide_driver_t ide_cdrom_driver
= {
1953 .owner
= THIS_MODULE
,
1954 .name
= "ide-cdrom",
1955 .bus
= &ide_bus_type
,
1957 .probe
= ide_cd_probe
,
1958 .remove
= ide_cd_remove
,
1959 .version
= IDECD_VERSION
,
1961 .supports_dsc_overlap
= 1,
1962 .do_request
= ide_do_rw_cdrom
,
1963 .end_request
= ide_end_request
,
1964 .error
= __ide_error
,
1965 .abort
= __ide_abort
,
1966 #ifdef CONFIG_IDE_PROC_FS
1971 static int idecd_open(struct inode
*inode
, struct file
*file
)
1973 struct gendisk
*disk
= inode
->i_bdev
->bd_disk
;
1974 struct cdrom_info
*info
;
1977 info
= ide_cd_get(disk
);
1981 rc
= cdrom_open(&info
->devinfo
, inode
, file
);
1989 static int idecd_release(struct inode
*inode
, struct file
*file
)
1991 struct gendisk
*disk
= inode
->i_bdev
->bd_disk
;
1992 struct cdrom_info
*info
= ide_cd_g(disk
);
1994 cdrom_release(&info
->devinfo
, file
);
2001 static int idecd_set_spindown(struct cdrom_device_info
*cdi
, unsigned long arg
)
2003 struct packet_command cgc
;
2008 if (copy_from_user(&spindown
, (void __user
*)arg
, sizeof(char)))
2011 init_cdrom_command(&cgc
, buffer
, sizeof(buffer
), CGC_DATA_UNKNOWN
);
2013 stat
= cdrom_mode_sense(cdi
, &cgc
, GPMODE_CDROM_PAGE
, 0);
2017 buffer
[11] = (buffer
[11] & 0xf0) | (spindown
& 0x0f);
2018 return cdrom_mode_select(cdi
, &cgc
);
2021 static int idecd_get_spindown(struct cdrom_device_info
*cdi
, unsigned long arg
)
2023 struct packet_command cgc
;
2028 init_cdrom_command(&cgc
, buffer
, sizeof(buffer
), CGC_DATA_UNKNOWN
);
2030 stat
= cdrom_mode_sense(cdi
, &cgc
, GPMODE_CDROM_PAGE
, 0);
2034 spindown
= buffer
[11] & 0x0f;
2035 if (copy_to_user((void __user
*)arg
, &spindown
, sizeof(char)))
2040 static int idecd_ioctl(struct inode
*inode
, struct file
*file
,
2041 unsigned int cmd
, unsigned long arg
)
2043 struct block_device
*bdev
= inode
->i_bdev
;
2044 struct cdrom_info
*info
= ide_cd_g(bdev
->bd_disk
);
2048 case CDROMSETSPINDOWN
:
2049 return idecd_set_spindown(&info
->devinfo
, arg
);
2050 case CDROMGETSPINDOWN
:
2051 return idecd_get_spindown(&info
->devinfo
, arg
);
2056 err
= generic_ide_ioctl(info
->drive
, file
, bdev
, cmd
, arg
);
2058 err
= cdrom_ioctl(file
, &info
->devinfo
, inode
, cmd
, arg
);
2063 static int idecd_media_changed(struct gendisk
*disk
)
2065 struct cdrom_info
*info
= ide_cd_g(disk
);
2066 return cdrom_media_changed(&info
->devinfo
);
2069 static int idecd_revalidate_disk(struct gendisk
*disk
)
2071 struct cdrom_info
*info
= ide_cd_g(disk
);
2072 struct request_sense sense
;
2074 ide_cd_read_toc(info
->drive
, &sense
);
2079 static struct block_device_operations idecd_ops
= {
2080 .owner
= THIS_MODULE
,
2082 .release
= idecd_release
,
2083 .ioctl
= idecd_ioctl
,
2084 .media_changed
= idecd_media_changed
,
2085 .revalidate_disk
= idecd_revalidate_disk
2088 /* module options */
2089 static char *ignore
;
2091 module_param(ignore
, charp
, 0400);
2092 MODULE_DESCRIPTION("ATAPI CD-ROM Driver");
2094 static int ide_cd_probe(ide_drive_t
*drive
)
2096 struct cdrom_info
*info
;
2098 struct request_sense sense
;
2100 if (!strstr("ide-cdrom", drive
->driver_req
))
2102 if (!drive
->present
)
2104 if (drive
->media
!= ide_cdrom
&& drive
->media
!= ide_optical
)
2106 /* skip drives that we were told to ignore */
2107 if (ignore
!= NULL
) {
2108 if (strstr(ignore
, drive
->name
)) {
2109 printk(KERN_INFO
"ide-cd: ignoring drive %s\n",
2114 info
= kzalloc(sizeof(struct cdrom_info
), GFP_KERNEL
);
2116 printk(KERN_ERR
"%s: Can't allocate a cdrom structure\n",
2121 g
= alloc_disk(1 << PARTN_BITS
);
2125 ide_init_disk(g
, drive
);
2127 ide_proc_register_driver(drive
, &ide_cdrom_driver
);
2129 kref_init(&info
->kref
);
2131 info
->drive
= drive
;
2132 info
->driver
= &ide_cdrom_driver
;
2135 g
->private_data
= &info
->driver
;
2137 drive
->driver_data
= info
;
2140 g
->driverfs_dev
= &drive
->gendev
;
2141 g
->flags
= GENHD_FL_CD
| GENHD_FL_REMOVABLE
;
2142 if (ide_cdrom_setup(drive
)) {
2143 ide_proc_unregister_driver(drive
, &ide_cdrom_driver
);
2144 ide_cd_release(&info
->kref
);
2148 ide_cd_read_toc(drive
, &sense
);
2149 g
->fops
= &idecd_ops
;
2150 g
->flags
|= GENHD_FL_REMOVABLE
;
2160 static void __exit
ide_cdrom_exit(void)
2162 driver_unregister(&ide_cdrom_driver
.gen_driver
);
2165 static int __init
ide_cdrom_init(void)
2167 return driver_register(&ide_cdrom_driver
.gen_driver
);
2170 MODULE_ALIAS("ide:*m-cdrom*");
2171 MODULE_ALIAS("ide-cd");
2172 module_init(ide_cdrom_init
);
2173 module_exit(ide_cdrom_exit
);
2174 MODULE_LICENSE("GPL");