2 * linux/drivers/ide/ide-cd.c
4 * Copyright (C) 1994, 1995, 1996 scott snyder <snyder@fnald0.fnal.gov>
5 * Copyright (C) 1996-1998 Erik Andersen <andersee@debian.org>
6 * Copyright (C) 1998-2000 Jens Axboe <axboe@suse.de>
8 * May be copied or modified under the terms of the GNU General Public
9 * License. See linux/COPYING for more information.
11 * ATAPI CD-ROM driver. To be used with ide.c.
12 * See Documentation/cdrom/ide-cd for usage information.
14 * Suggestions are welcome. Patches that work are more welcome though. ;-)
15 * For those wishing to work on this driver, please be sure you download
16 * and comply with the latest Mt. Fuji (SFF8090 version 4) and ATAPI
17 * (SFF-8020i rev 2.6) standards. These documents can be obtained by
19 * ftp://fission.dt.wdc.com/pub/standards/SFF_atapi/spec/SFF8020-r2.6/PS/8020r26.ps
20 * ftp://ftp.avc-pioneer.com/Mtfuji4/Spec/Fuji4r10.pdf
22 * Drives that deviate from these standards will be accommodated as much
23 * as possible via compile time or command-line options. Since I only have
24 * a few drives, you generally need to send me patches...
26 * ----------------------------------
28 * -Make it so that Pioneer CD DR-A24X and friends don't get screwed up on
31 * For historical changelog please see:
32 * Documentation/ide/ChangeLog.ide-cd.1994-2004
35 #define IDECD_VERSION "4.61"
37 #include <linux/module.h>
38 #include <linux/types.h>
39 #include <linux/kernel.h>
40 #include <linux/delay.h>
41 #include <linux/timer.h>
42 #include <linux/slab.h>
43 #include <linux/interrupt.h>
44 #include <linux/errno.h>
45 #include <linux/cdrom.h>
46 #include <linux/ide.h>
47 #include <linux/completion.h>
48 #include <linux/mutex.h>
49 #include <linux/bcd.h>
51 #include <scsi/scsi.h> /* For SCSI -> ATAPI command conversion */
55 #include <asm/byteorder.h>
56 #include <asm/uaccess.h>
57 #include <asm/unaligned.h>
61 static DEFINE_MUTEX(idecd_ref_mutex);
63 #define to_ide_cd(obj) container_of(obj, struct cdrom_info, kref)
65 #define ide_cd_g(disk) \
66 container_of((disk)->private_data, struct cdrom_info, driver)
68 static struct cdrom_info *ide_cd_get(struct gendisk *disk)
70 struct cdrom_info *cd = NULL;
72 mutex_lock(&idecd_ref_mutex);
76 mutex_unlock(&idecd_ref_mutex);
80 static void ide_cd_release(struct kref *);
82 static void ide_cd_put(struct cdrom_info *cd)
84 mutex_lock(&idecd_ref_mutex);
85 kref_put(&cd->kref, ide_cd_release);
86 mutex_unlock(&idecd_ref_mutex);
89 /****************************************************************************
90 * Generic packet command support and error handling routines.
93 /* Mark that we've seen a media change, and invalidate our internal
95 static void cdrom_saw_media_change (ide_drive_t *drive)
97 struct cdrom_info *cd = drive->driver_data;
99 cd->cd_flags |= IDE_CD_FLAG_MEDIA_CHANGED;
100 cd->cd_flags &= ~IDE_CD_FLAG_TOC_VALID;
101 cd->nsectors_buffered = 0;
104 static int cdrom_log_sense(ide_drive_t *drive, struct request *rq,
105 struct request_sense *sense)
109 if (!sense || !rq || (rq->cmd_flags & REQ_QUIET))
112 switch (sense->sense_key) {
113 case NO_SENSE: case RECOVERED_ERROR:
117 * don't care about tray state messages for
118 * e.g. capacity commands or in-progress or
121 if (sense->asc == 0x3a || sense->asc == 0x04)
125 case ILLEGAL_REQUEST:
127 * don't log START_STOP unit with LoEj set, since
128 * we cannot reliably check if drive can auto-close
130 if (rq->cmd[0] == GPCMD_START_STOP_UNIT && sense->asc == 0x24)
136 * Make good and sure we've seen this potential media
137 * change. Some drives (i.e. Creative) fail to present
138 * the correct sense key in the error register.
140 cdrom_saw_media_change(drive);
150 void cdrom_analyze_sense_data(ide_drive_t *drive,
151 struct request *failed_command,
152 struct request_sense *sense)
154 unsigned long sector;
155 unsigned long bio_sectors;
157 struct cdrom_info *info = drive->driver_data;
159 if (!cdrom_log_sense(drive, failed_command, sense))
163 * If a read toc is executed for a CD-R or CD-RW medium where
164 * the first toc has not been recorded yet, it will fail with
165 * 05/24/00 (which is a confusing error)
167 if (failed_command && failed_command->cmd[0] == GPCMD_READ_TOC_PMA_ATIP)
168 if (sense->sense_key == 0x05 && sense->asc == 0x24)
171 if (sense->error_code == 0x70) { /* Current Error */
172 switch(sense->sense_key) {
174 case VOLUME_OVERFLOW:
175 case ILLEGAL_REQUEST:
178 if (failed_command == NULL ||
179 !blk_fs_request(failed_command))
181 sector = (sense->information[0] << 24) |
182 (sense->information[1] << 16) |
183 (sense->information[2] << 8) |
184 (sense->information[3]);
186 bio_sectors = bio_sectors(failed_command->bio);
189 if (drive->queue->hardsect_size == 2048)
190 sector <<= 2; /* Device sector size is 2K */
191 sector &= ~(bio_sectors -1);
192 valid = (sector - failed_command->sector) << 9;
196 if (sector < get_capacity(info->disk) &&
197 drive->probed_capacity - sector < 4 * 75) {
198 set_capacity(info->disk, sector);
203 ide_cd_log_error(drive->name, failed_command, sense);
207 * Initialize a ide-cd packet command request
209 void ide_cd_init_rq(ide_drive_t *drive, struct request *rq)
211 struct cdrom_info *cd = drive->driver_data;
213 ide_init_drive_cmd(rq);
214 rq->cmd_type = REQ_TYPE_ATA_PC;
215 rq->rq_disk = cd->disk;
218 static void cdrom_queue_request_sense(ide_drive_t *drive, void *sense,
219 struct request *failed_command)
221 struct cdrom_info *info = drive->driver_data;
222 struct request *rq = &info->request_sense_request;
225 sense = &info->sense_data;
227 /* stuff the sense request in front of our current request */
228 ide_cd_init_rq(drive, rq);
231 rq->cmd[0] = GPCMD_REQUEST_SENSE;
232 rq->cmd[4] = rq->data_len = 18;
234 rq->cmd_type = REQ_TYPE_SENSE;
236 /* NOTE! Save the failed command in "rq->buffer" */
237 rq->buffer = (void *) failed_command;
239 (void) ide_do_drive_cmd(drive, rq, ide_preempt);
242 static void cdrom_end_request (ide_drive_t *drive, int uptodate)
244 struct request *rq = HWGROUP(drive)->rq;
245 int nsectors = rq->hard_cur_sectors;
247 if (blk_sense_request(rq) && uptodate) {
249 * For REQ_TYPE_SENSE, "rq->buffer" points to the original
252 struct request *failed = (struct request *) rq->buffer;
253 struct cdrom_info *info = drive->driver_data;
254 void *sense = &info->sense_data;
259 sense = failed->sense;
260 failed->sense_len = rq->sense_len;
262 cdrom_analyze_sense_data(drive, failed, sense);
264 * now end failed request
266 if (blk_fs_request(failed)) {
267 if (ide_end_dequeued_request(drive, failed, 0,
268 failed->hard_nr_sectors))
271 spin_lock_irqsave(&ide_lock, flags);
272 if (__blk_end_request(failed, -EIO,
275 spin_unlock_irqrestore(&ide_lock, flags);
278 cdrom_analyze_sense_data(drive, NULL, sense);
281 if (!rq->current_nr_sectors && blk_fs_request(rq))
283 /* make sure it's fully ended */
284 if (blk_pc_request(rq))
285 nsectors = (rq->data_len + 511) >> 9;
289 ide_end_request(drive, uptodate, nsectors);
292 static void ide_dump_status_no_sense(ide_drive_t *drive, const char *msg, u8 stat)
296 ide_dump_status(drive, msg, stat);
299 /* Returns 0 if the request should be continued.
300 Returns 1 if the request was ended. */
301 static int cdrom_decode_status(ide_drive_t *drive, int good_stat, int *stat_ret)
303 struct request *rq = HWGROUP(drive)->rq;
304 int stat, err, sense_key;
306 /* Check for errors. */
307 stat = HWIF(drive)->INB(IDE_STATUS_REG);
311 if (OK_STAT(stat, good_stat, BAD_R_STAT))
314 /* Get the IDE error register. */
315 err = HWIF(drive)->INB(IDE_ERROR_REG);
316 sense_key = err >> 4;
319 printk("%s: missing rq in cdrom_decode_status\n", drive->name);
323 if (blk_sense_request(rq)) {
324 /* We got an error trying to get sense info
325 from the drive (probably while trying
326 to recover from a former error). Just give up. */
328 rq->cmd_flags |= REQ_FAILED;
329 cdrom_end_request(drive, 0);
330 ide_error(drive, "request sense failure", stat);
333 } else if (blk_pc_request(rq) || rq->cmd_type == REQ_TYPE_ATA_PC) {
334 /* All other functions, except for READ. */
338 * if we have an error, pass back CHECK_CONDITION as the
341 if (blk_pc_request(rq) && !rq->errors)
342 rq->errors = SAM_STAT_CHECK_CONDITION;
344 /* Check for tray open. */
345 if (sense_key == NOT_READY) {
346 cdrom_saw_media_change (drive);
347 } else if (sense_key == UNIT_ATTENTION) {
348 /* Check for media change. */
349 cdrom_saw_media_change (drive);
350 /*printk("%s: media changed\n",drive->name);*/
352 } else if ((sense_key == ILLEGAL_REQUEST) &&
353 (rq->cmd[0] == GPCMD_START_STOP_UNIT)) {
355 * Don't print error message for this condition--
356 * SFF8090i indicates that 5/24/00 is the correct
357 * response to a request to close the tray if the
358 * drive doesn't have that capability.
359 * cdrom_log_sense() knows this!
361 } else if (!(rq->cmd_flags & REQ_QUIET)) {
362 /* Otherwise, print an error. */
363 ide_dump_status(drive, "packet command error", stat);
366 rq->cmd_flags |= REQ_FAILED;
369 * instead of playing games with moving completions around,
370 * remove failed request completely and end it when the
371 * request sense has completed
373 if (stat & ERR_STAT) {
374 spin_lock_irqsave(&ide_lock, flags);
375 blkdev_dequeue_request(rq);
376 HWGROUP(drive)->rq = NULL;
377 spin_unlock_irqrestore(&ide_lock, flags);
379 cdrom_queue_request_sense(drive, rq->sense, rq);
381 cdrom_end_request(drive, 0);
383 } else if (blk_fs_request(rq)) {
384 int do_end_request = 0;
386 /* Handle errors from READ and WRITE requests. */
388 if (blk_noretry_request(rq))
391 if (sense_key == NOT_READY) {
393 if (rq_data_dir(rq) == READ) {
394 cdrom_saw_media_change (drive);
396 /* Fail the request. */
397 printk ("%s: tray open\n", drive->name);
400 struct cdrom_info *info = drive->driver_data;
402 /* allow the drive 5 seconds to recover, some
403 * devices will return this error while flushing
406 info->write_timeout = jiffies + ATAPI_WAIT_WRITE_BUSY;
408 if (time_after(jiffies, info->write_timeout))
414 * take a breather relying on the
415 * unplug timer to kick us again
417 spin_lock_irqsave(&ide_lock, flags);
418 blk_plug_device(drive->queue);
419 spin_unlock_irqrestore(&ide_lock,flags);
423 } else if (sense_key == UNIT_ATTENTION) {
425 cdrom_saw_media_change (drive);
427 /* Arrange to retry the request.
428 But be sure to give up if we've retried
430 if (++rq->errors > ERROR_MAX)
432 } else if (sense_key == ILLEGAL_REQUEST ||
433 sense_key == DATA_PROTECT) {
434 /* No point in retrying after an illegal
435 request or data protect error.*/
436 ide_dump_status_no_sense (drive, "command error", stat);
438 } else if (sense_key == MEDIUM_ERROR) {
439 /* No point in re-trying a zillion times on a bad
440 * sector... If we got here the error is not correctable */
441 ide_dump_status_no_sense (drive, "media error (bad sector)", stat);
443 } else if (sense_key == BLANK_CHECK) {
444 /* Disk appears blank ?? */
445 ide_dump_status_no_sense (drive, "media error (blank)", stat);
447 } else if ((err & ~ABRT_ERR) != 0) {
448 /* Go to the default handler
450 ide_error(drive, "cdrom_decode_status", stat);
452 } else if ((++rq->errors > ERROR_MAX)) {
453 /* We've racked up too many retries. Abort. */
457 /* End a request through request sense analysis when we have
458 sense data. We need this in order to perform end of media
461 if (do_end_request) {
462 if (stat & ERR_STAT) {
464 spin_lock_irqsave(&ide_lock, flags);
465 blkdev_dequeue_request(rq);
466 HWGROUP(drive)->rq = NULL;
467 spin_unlock_irqrestore(&ide_lock, flags);
469 cdrom_queue_request_sense(drive, rq->sense, rq);
471 cdrom_end_request(drive, 0);
473 /* If we got a CHECK_CONDITION status,
474 queue a request sense command. */
476 cdrom_queue_request_sense(drive, NULL, NULL);
479 blk_dump_rq_flags(rq, "ide-cd: bad rq");
480 cdrom_end_request(drive, 0);
483 /* Retry, or handle the next request. */
487 static int cdrom_timer_expiry(ide_drive_t *drive)
489 struct request *rq = HWGROUP(drive)->rq;
490 unsigned long wait = 0;
493 * Some commands are *slow* and normally take a long time to
494 * complete. Usually we can use the ATAPI "disconnect" to bypass
495 * this, but not all commands/drives support that. Let
496 * ide_timer_expiry keep polling us for these.
498 switch (rq->cmd[0]) {
500 case GPCMD_FORMAT_UNIT:
501 case GPCMD_RESERVE_RZONE_TRACK:
502 case GPCMD_CLOSE_TRACK:
503 case GPCMD_FLUSH_CACHE:
504 wait = ATAPI_WAIT_PC;
507 if (!(rq->cmd_flags & REQ_QUIET))
508 printk(KERN_INFO "ide-cd: cmd 0x%x timed out\n", rq->cmd[0]);
515 /* Set up the device registers for transferring a packet command on DEV,
516 expecting to later transfer XFERLEN bytes. HANDLER is the routine
517 which actually transfers the command to the drive. If this is a
518 drq_interrupt device, this routine will arrange for HANDLER to be
519 called when the interrupt from the drive arrives. Otherwise, HANDLER
520 will be called immediately after the drive is prepared for the transfer. */
522 static ide_startstop_t cdrom_start_packet_command(ide_drive_t *drive,
524 ide_handler_t *handler)
526 ide_startstop_t startstop;
527 struct cdrom_info *info = drive->driver_data;
528 ide_hwif_t *hwif = drive->hwif;
530 /* Wait for the controller to be idle. */
531 if (ide_wait_stat(&startstop, drive, 0, BUSY_STAT, WAIT_READY))
534 /* FIXME: for Virtual DMA we must check harder */
536 info->dma = !hwif->dma_setup(drive);
538 /* Set up the controller registers. */
539 ide_pktcmd_tf_load(drive, IDE_TFLAG_OUT_NSECT | IDE_TFLAG_OUT_LBAL |
540 IDE_TFLAG_NO_SELECT_MASK, xferlen, info->dma);
542 if (info->cd_flags & IDE_CD_FLAG_DRQ_INTERRUPT) {
543 /* waiting for CDB interrupt, not DMA yet. */
545 drive->waiting_for_dma = 0;
548 ide_execute_command(drive, WIN_PACKETCMD, handler, ATAPI_WAIT_PC, cdrom_timer_expiry);
554 spin_lock_irqsave(&ide_lock, flags);
555 hwif->OUTBSYNC(drive, WIN_PACKETCMD, IDE_COMMAND_REG);
557 spin_unlock_irqrestore(&ide_lock, flags);
559 return (*handler) (drive);
563 /* Send a packet command to DRIVE described by CMD_BUF and CMD_LEN.
564 The device registers must have already been prepared
565 by cdrom_start_packet_command.
566 HANDLER is the interrupt handler to call when the command completes
567 or there's data ready. */
568 #define ATAPI_MIN_CDB_BYTES 12
569 static ide_startstop_t cdrom_transfer_packet_command (ide_drive_t *drive,
571 ide_handler_t *handler)
573 ide_hwif_t *hwif = drive->hwif;
575 struct cdrom_info *info = drive->driver_data;
576 ide_startstop_t startstop;
578 if (info->cd_flags & IDE_CD_FLAG_DRQ_INTERRUPT) {
579 /* Here we should have been called after receiving an interrupt
580 from the device. DRQ should how be set. */
582 /* Check for errors. */
583 if (cdrom_decode_status(drive, DRQ_STAT, NULL))
586 /* Ok, next interrupt will be DMA interrupt. */
588 drive->waiting_for_dma = 1;
590 /* Otherwise, we must wait for DRQ to get set. */
591 if (ide_wait_stat(&startstop, drive, DRQ_STAT,
592 BUSY_STAT, WAIT_READY))
596 /* Arm the interrupt handler. */
597 ide_set_handler(drive, handler, rq->timeout, cdrom_timer_expiry);
599 /* ATAPI commands get padded out to 12 bytes minimum */
600 cmd_len = COMMAND_SIZE(rq->cmd[0]);
601 if (cmd_len < ATAPI_MIN_CDB_BYTES)
602 cmd_len = ATAPI_MIN_CDB_BYTES;
604 /* Send the command to the device. */
605 HWIF(drive)->atapi_output_bytes(drive, rq->cmd, cmd_len);
607 /* Start the DMA if need be */
609 hwif->dma_start(drive);
614 /****************************************************************************
615 * Block read functions.
618 typedef void (xfer_func_t)(ide_drive_t *, void *, u32);
620 static void ide_cd_pad_transfer(ide_drive_t *drive, xfer_func_t *xf, int len)
624 xf(drive, &dum, sizeof(dum));
630 * Buffer up to SECTORS_TO_TRANSFER sectors from the drive in our sector
631 * buffer. Once the first sector is added, any subsequent sectors are
632 * assumed to be continuous (until the buffer is cleared). For the first
633 * sector added, SECTOR is its sector number. (SECTOR is then ignored until
634 * the buffer is cleared.)
636 static void cdrom_buffer_sectors (ide_drive_t *drive, unsigned long sector,
637 int sectors_to_transfer)
639 struct cdrom_info *info = drive->driver_data;
641 /* Number of sectors to read into the buffer. */
642 int sectors_to_buffer = min_t(int, sectors_to_transfer,
643 (SECTOR_BUFFER_SIZE >> SECTOR_BITS) -
644 info->nsectors_buffered);
648 /* If we couldn't get a buffer, don't try to buffer anything... */
649 if (info->buffer == NULL)
650 sectors_to_buffer = 0;
652 /* If this is the first sector in the buffer, remember its number. */
653 if (info->nsectors_buffered == 0)
654 info->sector_buffered = sector;
656 /* Read the data into the buffer. */
657 dest = info->buffer + info->nsectors_buffered * SECTOR_SIZE;
658 while (sectors_to_buffer > 0) {
659 HWIF(drive)->atapi_input_bytes(drive, dest, SECTOR_SIZE);
661 --sectors_to_transfer;
662 ++info->nsectors_buffered;
666 /* Throw away any remaining data. */
667 while (sectors_to_transfer > 0) {
668 static char dum[SECTOR_SIZE];
669 HWIF(drive)->atapi_input_bytes(drive, dum, sizeof (dum));
670 --sectors_to_transfer;
675 * Check the contents of the interrupt reason register from the cdrom
676 * and attempt to recover if there are problems. Returns 0 if everything's
677 * ok; nonzero if the request has been terminated.
680 int cdrom_read_check_ireason (ide_drive_t *drive, int len, int ireason)
684 else if (ireason == 0) {
685 ide_hwif_t *hwif = drive->hwif;
687 /* Whoops... The drive is expecting to receive data from us! */
688 printk(KERN_ERR "%s: %s: wrong transfer direction!\n",
689 drive->name, __FUNCTION__);
691 /* Throw some data at the drive so it doesn't hang
692 and quit this request. */
693 ide_cd_pad_transfer(drive, hwif->atapi_output_bytes, len);
694 } else if (ireason == 1) {
695 /* Some drives (ASUS) seem to tell us that status
696 * info is available. just get it and ignore.
698 (void) HWIF(drive)->INB(IDE_STATUS_REG);
701 /* Drive wants a command packet, or invalid ireason... */
702 printk(KERN_ERR "%s: %s: bad interrupt reason 0x%02x\n",
703 drive->name, __FUNCTION__, ireason);
706 cdrom_end_request(drive, 0);
711 * Interrupt routine. Called when a read request has completed.
713 static ide_startstop_t cdrom_read_intr (ide_drive_t *drive)
716 int ireason, len, sectors_to_transfer, nskip;
717 struct cdrom_info *info = drive->driver_data;
718 u8 lowcyl = 0, highcyl = 0;
719 int dma = info->dma, dma_error = 0;
721 struct request *rq = HWGROUP(drive)->rq;
728 dma_error = HWIF(drive)->ide_dma_end(drive);
730 printk(KERN_ERR "%s: DMA read error\n", drive->name);
735 if (cdrom_decode_status(drive, 0, &stat))
740 ide_end_request(drive, 1, rq->nr_sectors);
743 return ide_error(drive, "dma error", stat);
746 /* Read the interrupt reason and the transfer length. */
747 ireason = HWIF(drive)->INB(IDE_IREASON_REG) & 0x3;
748 lowcyl = HWIF(drive)->INB(IDE_BCOUNTL_REG);
749 highcyl = HWIF(drive)->INB(IDE_BCOUNTH_REG);
751 len = lowcyl + (256 * highcyl);
753 /* If DRQ is clear, the command has completed. */
754 if ((stat & DRQ_STAT) == 0) {
755 /* If we're not done filling the current buffer, complain.
756 Otherwise, complete the command normally. */
757 if (rq->current_nr_sectors > 0) {
758 printk (KERN_ERR "%s: cdrom_read_intr: data underrun (%d blocks)\n",
759 drive->name, rq->current_nr_sectors);
760 rq->cmd_flags |= REQ_FAILED;
761 cdrom_end_request(drive, 0);
763 cdrom_end_request(drive, 1);
767 /* Check that the drive is expecting to do the same thing we are. */
768 if (cdrom_read_check_ireason (drive, len, ireason))
771 /* Assume that the drive will always provide data in multiples
772 of at least SECTOR_SIZE, as it gets hairy to keep track
773 of the transfers otherwise. */
774 if ((len % SECTOR_SIZE) != 0) {
775 printk (KERN_ERR "%s: cdrom_read_intr: Bad transfer size %d\n",
777 if (info->cd_flags & IDE_CD_FLAG_LIMIT_NFRAMES)
778 printk (KERN_ERR " This drive is not supported by this version of the driver\n");
780 printk (KERN_ERR " Trying to limit transfer sizes\n");
781 info->cd_flags |= IDE_CD_FLAG_LIMIT_NFRAMES;
783 cdrom_end_request(drive, 0);
787 /* The number of sectors we need to read from the drive. */
788 sectors_to_transfer = len / SECTOR_SIZE;
790 /* First, figure out if we need to bit-bucket
791 any of the leading sectors. */
792 nskip = min_t(int, rq->current_nr_sectors - bio_cur_sectors(rq->bio), sectors_to_transfer);
795 /* We need to throw away a sector. */
796 static char dum[SECTOR_SIZE];
797 HWIF(drive)->atapi_input_bytes(drive, dum, sizeof (dum));
799 --rq->current_nr_sectors;
801 --sectors_to_transfer;
804 /* Now loop while we still have data to read from the drive. */
805 while (sectors_to_transfer > 0) {
808 /* If we've filled the present buffer but there's another
809 chained buffer after it, move on. */
810 if (rq->current_nr_sectors == 0 && rq->nr_sectors)
811 cdrom_end_request(drive, 1);
813 /* If the buffers are full, cache the rest of the data in our
815 if (rq->current_nr_sectors == 0) {
816 cdrom_buffer_sectors(drive, rq->sector, sectors_to_transfer);
817 sectors_to_transfer = 0;
819 /* Transfer data to the buffers.
820 Figure out how many sectors we can transfer
821 to the current buffer. */
822 this_transfer = min_t(int, sectors_to_transfer,
823 rq->current_nr_sectors);
825 /* Read this_transfer sectors
826 into the current buffer. */
827 while (this_transfer > 0) {
828 HWIF(drive)->atapi_input_bytes(drive, rq->buffer, SECTOR_SIZE);
829 rq->buffer += SECTOR_SIZE;
831 --rq->current_nr_sectors;
834 --sectors_to_transfer;
839 /* Done moving data! Wait for another interrupt. */
840 ide_set_handler(drive, &cdrom_read_intr, ATAPI_WAIT_PC, NULL);
845 * Try to satisfy some of the current read request from our cached data.
846 * Returns nonzero if the request has been completed, zero otherwise.
848 static int cdrom_read_from_buffer (ide_drive_t *drive)
850 struct cdrom_info *info = drive->driver_data;
851 struct request *rq = HWGROUP(drive)->rq;
852 unsigned short sectors_per_frame;
854 sectors_per_frame = queue_hardsect_size(drive->queue) >> SECTOR_BITS;
856 /* Can't do anything if there's no buffer. */
857 if (info->buffer == NULL) return 0;
859 /* Loop while this request needs data and the next block is present
861 while (rq->nr_sectors > 0 &&
862 rq->sector >= info->sector_buffered &&
863 rq->sector < info->sector_buffered + info->nsectors_buffered) {
864 if (rq->current_nr_sectors == 0)
865 cdrom_end_request(drive, 1);
869 (rq->sector - info->sector_buffered) * SECTOR_SIZE,
871 rq->buffer += SECTOR_SIZE;
872 --rq->current_nr_sectors;
877 /* If we've satisfied the current request,
878 terminate it successfully. */
879 if (rq->nr_sectors == 0) {
880 cdrom_end_request(drive, 1);
884 /* Move on to the next buffer if needed. */
885 if (rq->current_nr_sectors == 0)
886 cdrom_end_request(drive, 1);
888 /* If this condition does not hold, then the kluge i use to
889 represent the number of sectors to skip at the start of a transfer
890 will fail. I think that this will never happen, but let's be
891 paranoid and check. */
892 if (rq->current_nr_sectors < bio_cur_sectors(rq->bio) &&
893 (rq->sector & (sectors_per_frame - 1))) {
894 printk(KERN_ERR "%s: cdrom_read_from_buffer: buffer botch (%ld)\n",
895 drive->name, (long)rq->sector);
896 cdrom_end_request(drive, 0);
904 * Routine to send a read packet command to the drive.
905 * This is usually called directly from cdrom_start_read.
906 * However, for drq_interrupt devices, it is called from an interrupt
907 * when the drive is ready to accept the command.
909 static ide_startstop_t cdrom_start_read_continuation (ide_drive_t *drive)
911 struct request *rq = HWGROUP(drive)->rq;
912 unsigned short sectors_per_frame;
915 sectors_per_frame = queue_hardsect_size(drive->queue) >> SECTOR_BITS;
917 /* If the requested sector doesn't start on a cdrom block boundary,
918 we must adjust the start of the transfer so that it does,
919 and remember to skip the first few sectors.
920 If the CURRENT_NR_SECTORS field is larger than the size
921 of the buffer, it will mean that we're to skip a number
922 of sectors equal to the amount by which CURRENT_NR_SECTORS
923 is larger than the buffer size. */
924 nskip = rq->sector & (sectors_per_frame - 1);
926 /* Sanity check... */
927 if (rq->current_nr_sectors != bio_cur_sectors(rq->bio) &&
928 (rq->sector & (sectors_per_frame - 1))) {
929 printk(KERN_ERR "%s: cdrom_start_read_continuation: buffer botch (%u)\n",
930 drive->name, rq->current_nr_sectors);
931 cdrom_end_request(drive, 0);
934 rq->current_nr_sectors += nskip;
937 /* Set up the command */
938 rq->timeout = ATAPI_WAIT_PC;
940 /* Send the command to the drive and return. */
941 return cdrom_transfer_packet_command(drive, rq, &cdrom_read_intr);
945 #define IDECD_SEEK_THRESHOLD (1000) /* 1000 blocks */
946 #define IDECD_SEEK_TIMER (5 * WAIT_MIN_SLEEP) /* 100 ms */
947 #define IDECD_SEEK_TIMEOUT (2 * WAIT_CMD) /* 20 sec */
949 static ide_startstop_t cdrom_seek_intr (ide_drive_t *drive)
951 struct cdrom_info *info = drive->driver_data;
953 static int retry = 10;
955 if (cdrom_decode_status(drive, 0, &stat))
958 info->cd_flags |= IDE_CD_FLAG_SEEKING;
960 if (retry && time_after(jiffies, info->start_seek + IDECD_SEEK_TIMER)) {
963 * this condition is far too common, to bother
966 /* printk("%s: disabled DSC seek overlap\n", drive->name);*/
967 drive->dsc_overlap = 0;
973 static ide_startstop_t cdrom_start_seek_continuation (ide_drive_t *drive)
975 struct request *rq = HWGROUP(drive)->rq;
976 sector_t frame = rq->sector;
978 sector_div(frame, queue_hardsect_size(drive->queue) >> SECTOR_BITS);
980 memset(rq->cmd, 0, sizeof(rq->cmd));
981 rq->cmd[0] = GPCMD_SEEK;
982 put_unaligned(cpu_to_be32(frame), (unsigned int *) &rq->cmd[2]);
984 rq->timeout = ATAPI_WAIT_PC;
985 return cdrom_transfer_packet_command(drive, rq, &cdrom_seek_intr);
988 static ide_startstop_t cdrom_start_seek (ide_drive_t *drive, unsigned int block)
990 struct cdrom_info *info = drive->driver_data;
993 info->start_seek = jiffies;
994 return cdrom_start_packet_command(drive, 0, cdrom_start_seek_continuation);
997 /* Fix up a possibly partially-processed request so that we can
998 start it over entirely, or even put it back on the request queue. */
999 static void restore_request (struct request *rq)
1001 if (rq->buffer != bio_data(rq->bio)) {
1002 sector_t n = (rq->buffer - (char *) bio_data(rq->bio)) / SECTOR_SIZE;
1004 rq->buffer = bio_data(rq->bio);
1005 rq->nr_sectors += n;
1008 rq->hard_cur_sectors = rq->current_nr_sectors = bio_cur_sectors(rq->bio);
1009 rq->hard_nr_sectors = rq->nr_sectors;
1010 rq->hard_sector = rq->sector;
1011 rq->q->prep_rq_fn(rq->q, rq);
1015 * Start a read request from the CD-ROM.
1017 static ide_startstop_t cdrom_start_read (ide_drive_t *drive, unsigned int block)
1019 struct cdrom_info *info = drive->driver_data;
1020 struct request *rq = HWGROUP(drive)->rq;
1021 unsigned short sectors_per_frame;
1023 sectors_per_frame = queue_hardsect_size(drive->queue) >> SECTOR_BITS;
1025 /* We may be retrying this request after an error. Fix up
1026 any weirdness which might be present in the request packet. */
1027 restore_request(rq);
1029 /* Satisfy whatever we can of this request from our cached sector. */
1030 if (cdrom_read_from_buffer(drive))
1033 /* Clear the local sector buffer. */
1034 info->nsectors_buffered = 0;
1036 /* use dma, if possible. */
1037 info->dma = drive->using_dma;
1038 if ((rq->sector & (sectors_per_frame - 1)) ||
1039 (rq->nr_sectors & (sectors_per_frame - 1)))
1042 /* Start sending the read request to the drive. */
1043 return cdrom_start_packet_command(drive, 32768, cdrom_start_read_continuation);
1046 /****************************************************************************
1047 * Execute all other packet commands.
1050 static void ide_cd_request_sense_fixup(struct request *rq)
1053 * Some of the trailing request sense fields are optional,
1054 * and some drives don't send them. Sigh.
1056 if (rq->cmd[0] == GPCMD_REQUEST_SENSE &&
1057 rq->data_len > 0 && rq->data_len <= 5)
1058 while (rq->data_len > 0) {
1059 *(u8 *)rq->data++ = 0;
1064 static ide_startstop_t cdrom_do_newpc_cont(ide_drive_t *);
1066 static ide_startstop_t cdrom_do_packet_command (ide_drive_t *drive)
1069 struct request *rq = HWGROUP(drive)->rq;
1070 struct cdrom_info *info = drive->driver_data;
1073 rq->cmd_flags &= ~REQ_FAILED;
1076 /* Start sending the command to the drive. */
1077 return cdrom_start_packet_command(drive, len, cdrom_do_newpc_cont);
1080 int ide_cd_queue_pc(ide_drive_t *drive, struct request *rq)
1082 struct request_sense sense;
1084 unsigned int flags = rq->cmd_flags;
1086 if (rq->sense == NULL)
1089 /* Start of retry loop. */
1092 unsigned long time = jiffies;
1093 rq->cmd_flags = flags;
1095 error = ide_do_drive_cmd(drive, rq, ide_wait);
1096 time = jiffies - time;
1098 /* FIXME: we should probably abort/retry or something
1099 * in case of failure */
1100 if (rq->cmd_flags & REQ_FAILED) {
1101 /* The request failed. Retry if it was due to a unit
1103 (usually means media was changed). */
1104 struct request_sense *reqbuf = rq->sense;
1106 if (reqbuf->sense_key == UNIT_ATTENTION)
1107 cdrom_saw_media_change(drive);
1108 else if (reqbuf->sense_key == NOT_READY &&
1109 reqbuf->asc == 4 && reqbuf->ascq != 4) {
1110 /* The drive is in the process of loading
1111 a disk. Retry, but wait a little to give
1112 the drive time to complete the load. */
1115 /* Otherwise, don't retry. */
1121 /* End of retry loop. */
1122 } while ((rq->cmd_flags & REQ_FAILED) && retries >= 0);
1124 /* Return an error if the command failed. */
1125 return (rq->cmd_flags & REQ_FAILED) ? -EIO : 0;
1131 static int cdrom_write_check_ireason(ide_drive_t *drive, int len, int ireason)
1133 /* Two notes about IDE interrupt reason here - 0 means that
1134 * the drive wants to receive data from us, 2 means that
1135 * the drive is expecting to transfer data to us.
1139 else if (ireason == 2) {
1140 ide_hwif_t *hwif = drive->hwif;
1142 /* Whoops... The drive wants to send data. */
1143 printk(KERN_ERR "%s: %s: wrong transfer direction!\n",
1144 drive->name, __FUNCTION__);
1146 ide_cd_pad_transfer(drive, hwif->atapi_input_bytes, len);
1148 /* Drive wants a command packet, or invalid ireason... */
1149 printk(KERN_ERR "%s: %s: bad interrupt reason 0x%02x\n",
1150 drive->name, __FUNCTION__, ireason);
1153 cdrom_end_request(drive, 0);
1158 * Called from blk_end_request_callback() after the data of the request
1159 * is completed and before the request is completed.
1160 * By returning value '1', blk_end_request_callback() returns immediately
1161 * without completing the request.
1163 static int cdrom_newpc_intr_dummy_cb(struct request *rq)
1169 * best way to deal with dma that is not sector aligned right now... note
1170 * that in this path we are not using ->data or ->buffer at all. this irs
1171 * can replace cdrom_read_intr() and cdrom_write_intr() in the future.
1173 static ide_startstop_t cdrom_newpc_intr(ide_drive_t *drive)
1175 struct cdrom_info *info = drive->driver_data;
1176 struct request *rq = HWGROUP(drive)->rq;
1177 xfer_func_t *xferfunc;
1178 ide_expiry_t *expiry;
1179 int dma_error = 0, dma, stat, ireason, len, thislen, uptodate = 0;
1180 int write = (rq_data_dir(rq) == WRITE) ? 1 : 0;
1181 unsigned int timeout;
1184 /* Check for errors. */
1188 dma_error = HWIF(drive)->ide_dma_end(drive);
1190 printk(KERN_ERR "%s: DMA %s error\n", drive->name,
1191 write ? "write" : "read");
1196 if (cdrom_decode_status(drive, 0, &stat))
1200 * using dma, transfer is complete now
1204 return ide_error(drive, "dma error", stat);
1209 * ok we fall to pio :/
1211 ireason = HWIF(drive)->INB(IDE_IREASON_REG) & 0x3;
1212 lowcyl = HWIF(drive)->INB(IDE_BCOUNTL_REG);
1213 highcyl = HWIF(drive)->INB(IDE_BCOUNTH_REG);
1215 len = lowcyl + (256 * highcyl);
1216 thislen = rq->data_len;
1221 * If DRQ is clear, the command has completed.
1223 if ((stat & DRQ_STAT) == 0) {
1224 if (!blk_pc_request(rq)) {
1225 ide_cd_request_sense_fixup(rq);
1226 /* Complain if we still have data left to transfer. */
1227 uptodate = rq->data_len ? 0 : 1;
1233 * check which way to transfer data
1235 if (blk_pc_request(rq) && rq_data_dir(rq) == WRITE) {
1239 if (cdrom_write_check_ireason(drive, len, ireason))
1241 } else if (blk_pc_request(rq)) {
1245 if (cdrom_read_check_ireason(drive, len, ireason))
1251 xferfunc = HWIF(drive)->atapi_output_bytes;
1252 } else if (ireason == 2 || (ireason == 1 && blk_pc_request(rq))) {
1254 xferfunc = HWIF(drive)->atapi_input_bytes;
1256 printk(KERN_ERR "%s: %s: The drive "
1257 "appears confused (ireason = 0x%02x). "
1258 "Trying to recover by ending request.\n",
1259 drive->name, __FUNCTION__, ireason);
1266 while (thislen > 0) {
1267 int blen = blen = rq->data_len;
1268 char *ptr = rq->data;
1274 ptr = bio_data(rq->bio);
1275 blen = bio_iovec(rq->bio)->bv_len;
1279 printk(KERN_ERR "%s: confused, missing data\n",
1281 blk_dump_rq_flags(rq, rq_data_dir(rq)
1282 ? "cdrom_newpc_intr, write"
1283 : "cdrom_newpc_intr, read");
1290 xferfunc(drive, ptr, blen);
1294 rq->data_len -= blen;
1298 * The request can't be completed until DRQ is cleared.
1299 * So complete the data, but don't complete the request
1300 * using the dummy function for the callback feature
1301 * of blk_end_request_callback().
1303 blk_end_request_callback(rq, 0, blen,
1304 cdrom_newpc_intr_dummy_cb);
1309 if (write && blk_sense_request(rq))
1310 rq->sense_len += thislen;
1316 ide_cd_pad_transfer(drive, xferfunc, len);
1318 if (blk_pc_request(rq)) {
1319 timeout = rq->timeout;
1322 timeout = ATAPI_WAIT_PC;
1323 expiry = cdrom_timer_expiry;
1326 ide_set_handler(drive, cdrom_newpc_intr, timeout, expiry);
1330 if (blk_pc_request(rq)) {
1331 unsigned long flags;
1333 spin_lock_irqsave(&ide_lock, flags);
1334 if (__blk_end_request(rq, 0, rq->data_len))
1336 HWGROUP(drive)->rq = NULL;
1337 spin_unlock_irqrestore(&ide_lock, flags);
1340 rq->cmd_flags |= REQ_FAILED;
1341 cdrom_end_request(drive, uptodate);
1346 static ide_startstop_t cdrom_write_intr(ide_drive_t *drive)
1348 int stat, ireason, len, sectors_to_transfer, uptodate;
1349 struct cdrom_info *info = drive->driver_data;
1350 int dma_error = 0, dma = info->dma;
1351 u8 lowcyl = 0, highcyl = 0;
1353 struct request *rq = HWGROUP(drive)->rq;
1355 /* Check for errors. */
1358 dma_error = HWIF(drive)->ide_dma_end(drive);
1360 printk(KERN_ERR "%s: DMA write error\n", drive->name);
1365 if (cdrom_decode_status(drive, 0, &stat))
1369 * using dma, transfer is complete now
1373 return ide_error(drive, "dma error", stat);
1375 ide_end_request(drive, 1, rq->nr_sectors);
1379 /* Read the interrupt reason and the transfer length. */
1380 ireason = HWIF(drive)->INB(IDE_IREASON_REG) & 0x3;
1381 lowcyl = HWIF(drive)->INB(IDE_BCOUNTL_REG);
1382 highcyl = HWIF(drive)->INB(IDE_BCOUNTH_REG);
1384 len = lowcyl + (256 * highcyl);
1386 /* If DRQ is clear, the command has completed. */
1387 if ((stat & DRQ_STAT) == 0) {
1388 /* If we're not done writing, complain.
1389 * Otherwise, complete the command normally.
1392 if (rq->current_nr_sectors > 0) {
1393 printk(KERN_ERR "%s: %s: data underrun (%d blocks)\n",
1394 drive->name, __FUNCTION__,
1395 rq->current_nr_sectors);
1398 cdrom_end_request(drive, uptodate);
1402 /* Check that the drive is expecting to do the same thing we are. */
1403 if (cdrom_write_check_ireason(drive, len, ireason))
1406 sectors_to_transfer = len / SECTOR_SIZE;
1409 * now loop and write out the data
1411 while (sectors_to_transfer > 0) {
1414 if (!rq->current_nr_sectors) {
1415 printk(KERN_ERR "%s: %s: confused, missing data\n",
1416 drive->name, __FUNCTION__);
1421 * Figure out how many sectors we can transfer
1423 this_transfer = min_t(int, sectors_to_transfer, rq->current_nr_sectors);
1425 while (this_transfer > 0) {
1426 HWIF(drive)->atapi_output_bytes(drive, rq->buffer, SECTOR_SIZE);
1427 rq->buffer += SECTOR_SIZE;
1429 --rq->current_nr_sectors;
1432 --sectors_to_transfer;
1436 * current buffer complete, move on
1438 if (rq->current_nr_sectors == 0 && rq->nr_sectors)
1439 cdrom_end_request(drive, 1);
1442 /* re-arm handler */
1443 ide_set_handler(drive, &cdrom_write_intr, ATAPI_WAIT_PC, NULL);
1447 static ide_startstop_t cdrom_start_write_cont(ide_drive_t *drive)
1449 struct request *rq = HWGROUP(drive)->rq;
1451 #if 0 /* the immediate bit */
1452 rq->cmd[1] = 1 << 3;
1454 rq->timeout = ATAPI_WAIT_PC;
1456 return cdrom_transfer_packet_command(drive, rq, cdrom_write_intr);
1459 static ide_startstop_t cdrom_start_write(ide_drive_t *drive, struct request *rq)
1461 struct cdrom_info *info = drive->driver_data;
1462 struct gendisk *g = info->disk;
1463 unsigned short sectors_per_frame = queue_hardsect_size(drive->queue) >> SECTOR_BITS;
1466 * writes *must* be hardware frame aligned
1468 if ((rq->nr_sectors & (sectors_per_frame - 1)) ||
1469 (rq->sector & (sectors_per_frame - 1))) {
1470 cdrom_end_request(drive, 0);
1475 * disk has become write protected
1478 cdrom_end_request(drive, 0);
1482 info->nsectors_buffered = 0;
1484 /* use dma, if possible. we don't need to check more, since we
1485 * know that the transfer is always (at least!) frame aligned */
1486 info->dma = drive->using_dma ? 1 : 0;
1488 info->devinfo.media_written = 1;
1490 /* Start sending the write request to the drive. */
1491 return cdrom_start_packet_command(drive, 32768, cdrom_start_write_cont);
1494 static ide_startstop_t cdrom_do_newpc_cont(ide_drive_t *drive)
1496 struct request *rq = HWGROUP(drive)->rq;
1499 rq->timeout = ATAPI_WAIT_PC;
1501 return cdrom_transfer_packet_command(drive, rq, cdrom_newpc_intr);
1504 static ide_startstop_t cdrom_do_block_pc(ide_drive_t *drive, struct request *rq)
1506 struct cdrom_info *info = drive->driver_data;
1508 rq->cmd_flags |= REQ_QUIET;
1516 int mask = drive->queue->dma_alignment;
1517 unsigned long addr = (unsigned long) page_address(bio_page(rq->bio));
1519 info->dma = drive->using_dma;
1522 * check if dma is safe
1524 * NOTE! The "len" and "addr" checks should possibly have
1527 if ((rq->data_len & 15) || (addr & mask))
1531 /* Start sending the command to the drive. */
1532 return cdrom_start_packet_command(drive, rq->data_len, cdrom_do_newpc_cont);
1535 /****************************************************************************
1536 * cdrom driver request routine.
1538 static ide_startstop_t
1539 ide_do_rw_cdrom (ide_drive_t *drive, struct request *rq, sector_t block)
1541 ide_startstop_t action;
1542 struct cdrom_info *info = drive->driver_data;
1544 if (blk_fs_request(rq)) {
1545 if (info->cd_flags & IDE_CD_FLAG_SEEKING) {
1546 unsigned long elapsed = jiffies - info->start_seek;
1547 int stat = HWIF(drive)->INB(IDE_STATUS_REG);
1549 if ((stat & SEEK_STAT) != SEEK_STAT) {
1550 if (elapsed < IDECD_SEEK_TIMEOUT) {
1551 ide_stall_queue(drive, IDECD_SEEK_TIMER);
1554 printk (KERN_ERR "%s: DSC timeout\n", drive->name);
1556 info->cd_flags &= ~IDE_CD_FLAG_SEEKING;
1558 if ((rq_data_dir(rq) == READ) && IDE_LARGE_SEEK(info->last_block, block, IDECD_SEEK_THRESHOLD) && drive->dsc_overlap) {
1559 action = cdrom_start_seek(drive, block);
1561 if (rq_data_dir(rq) == READ)
1562 action = cdrom_start_read(drive, block);
1564 action = cdrom_start_write(drive, rq);
1566 info->last_block = block;
1568 } else if (rq->cmd_type == REQ_TYPE_SENSE ||
1569 rq->cmd_type == REQ_TYPE_ATA_PC) {
1570 return cdrom_do_packet_command(drive);
1571 } else if (blk_pc_request(rq)) {
1572 return cdrom_do_block_pc(drive, rq);
1573 } else if (blk_special_request(rq)) {
1575 * right now this can only be a reset...
1577 cdrom_end_request(drive, 1);
1581 blk_dump_rq_flags(rq, "ide-cd bad flags");
1582 cdrom_end_request(drive, 0);
1588 /****************************************************************************
1591 * Routines which queue packet commands take as a final argument a pointer
1592 * to a request_sense struct. If execution of the command results
1593 * in an error with a CHECK CONDITION status, this structure will be filled
1594 * with the results of the subsequent request sense command. The pointer
1595 * can also be NULL, in which case no sense information is returned.
1599 void msf_from_bcd (struct atapi_msf *msf)
1601 msf->minute = BCD2BIN(msf->minute);
1602 msf->second = BCD2BIN(msf->second);
1603 msf->frame = BCD2BIN(msf->frame);
1606 static int cdrom_check_status(ide_drive_t *drive, struct request_sense *sense)
1609 struct cdrom_info *info = drive->driver_data;
1610 struct cdrom_device_info *cdi = &info->devinfo;
1612 ide_cd_init_rq(drive, &req);
1615 req.cmd[0] = GPCMD_TEST_UNIT_READY;
1616 req.cmd_flags |= REQ_QUIET;
1619 * Sanyo 3 CD changer uses byte 7 of TEST_UNIT_READY to
1620 * switch CDs instead of supporting the LOAD_UNLOAD opcode.
1622 req.cmd[7] = cdi->sanyo_slot % 3;
1624 return ide_cd_queue_pc(drive, &req);
1627 /* Lock the door if LOCKFLAG is nonzero; unlock it otherwise. */
1628 int ide_cd_lockdoor(ide_drive_t *drive, int lockflag,
1629 struct request_sense *sense)
1631 struct cdrom_info *cd = drive->driver_data;
1632 struct request_sense my_sense;
1639 /* If the drive cannot lock the door, just pretend. */
1640 if (cd->cd_flags & IDE_CD_FLAG_NO_DOORLOCK) {
1643 ide_cd_init_rq(drive, &req);
1645 req.cmd[0] = GPCMD_PREVENT_ALLOW_MEDIUM_REMOVAL;
1646 req.cmd[4] = lockflag ? 1 : 0;
1647 stat = ide_cd_queue_pc(drive, &req);
1650 /* If we got an illegal field error, the drive
1651 probably cannot lock the door. */
1653 sense->sense_key == ILLEGAL_REQUEST &&
1654 (sense->asc == 0x24 || sense->asc == 0x20)) {
1655 printk (KERN_ERR "%s: door locking not supported\n",
1657 cd->cd_flags |= IDE_CD_FLAG_NO_DOORLOCK;
1661 /* no medium, that's alright. */
1662 if (stat != 0 && sense->sense_key == NOT_READY && sense->asc == 0x3a)
1667 cd->cd_flags |= IDE_CD_FLAG_DOOR_LOCKED;
1669 cd->cd_flags &= ~IDE_CD_FLAG_DOOR_LOCKED;
1676 /* Eject the disk if EJECTFLAG is 0.
1677 If EJECTFLAG is 1, try to reload the disk. */
1678 static int cdrom_eject(ide_drive_t *drive, int ejectflag,
1679 struct request_sense *sense)
1681 struct cdrom_info *cd = drive->driver_data;
1682 struct cdrom_device_info *cdi = &cd->devinfo;
1686 if ((cd->cd_flags & IDE_CD_FLAG_NO_EJECT) && !ejectflag)
1687 return -EDRIVE_CANT_DO_THIS;
1689 /* reload fails on some drives, if the tray is locked */
1690 if ((cd->cd_flags & IDE_CD_FLAG_DOOR_LOCKED) && ejectflag)
1693 ide_cd_init_rq(drive, &req);
1695 /* only tell drive to close tray if open, if it can do that */
1696 if (ejectflag && (cdi->mask & CDC_CLOSE_TRAY))
1700 req.cmd[0] = GPCMD_START_STOP_UNIT;
1701 req.cmd[4] = loej | (ejectflag != 0);
1703 return ide_cd_queue_pc(drive, &req);
1706 static int cdrom_read_capacity(ide_drive_t *drive, unsigned long *capacity,
1707 unsigned long *sectors_per_frame,
1708 struct request_sense *sense)
1718 ide_cd_init_rq(drive, &req);
1721 req.cmd[0] = GPCMD_READ_CDVD_CAPACITY;
1722 req.data = (char *)&capbuf;
1723 req.data_len = sizeof(capbuf);
1724 req.cmd_flags |= REQ_QUIET;
1726 stat = ide_cd_queue_pc(drive, &req);
1728 *capacity = 1 + be32_to_cpu(capbuf.lba);
1729 *sectors_per_frame =
1730 be32_to_cpu(capbuf.blocklen) >> SECTOR_BITS;
1736 static int cdrom_read_tocentry(ide_drive_t *drive, int trackno, int msf_flag,
1737 int format, char *buf, int buflen,
1738 struct request_sense *sense)
1742 ide_cd_init_rq(drive, &req);
1746 req.data_len = buflen;
1747 req.cmd_flags |= REQ_QUIET;
1748 req.cmd[0] = GPCMD_READ_TOC_PMA_ATIP;
1749 req.cmd[6] = trackno;
1750 req.cmd[7] = (buflen >> 8);
1751 req.cmd[8] = (buflen & 0xff);
1752 req.cmd[9] = (format << 6);
1757 return ide_cd_queue_pc(drive, &req);
1760 /* Try to read the entire TOC for the disk into our internal buffer. */
1761 int ide_cd_read_toc(ide_drive_t *drive, struct request_sense *sense)
1763 int stat, ntracks, i;
1764 struct cdrom_info *info = drive->driver_data;
1765 struct cdrom_device_info *cdi = &info->devinfo;
1766 struct atapi_toc *toc = info->toc;
1768 struct atapi_toc_header hdr;
1769 struct atapi_toc_entry ent;
1772 unsigned long sectors_per_frame = SECTORS_PER_FRAME;
1775 /* Try to allocate space. */
1776 toc = kmalloc(sizeof(struct atapi_toc), GFP_KERNEL);
1778 printk (KERN_ERR "%s: No cdrom TOC buffer!\n", drive->name);
1784 /* Check to see if the existing data is still valid.
1785 If it is, just return. */
1786 (void) cdrom_check_status(drive, sense);
1788 if (info->cd_flags & IDE_CD_FLAG_TOC_VALID)
1791 /* Try to get the total cdrom capacity and sector size. */
1792 stat = cdrom_read_capacity(drive, &toc->capacity, §ors_per_frame,
1795 toc->capacity = 0x1fffff;
1797 set_capacity(info->disk, toc->capacity * sectors_per_frame);
1798 /* Save a private copy of te TOC capacity for error handling */
1799 drive->probed_capacity = toc->capacity * sectors_per_frame;
1801 blk_queue_hardsect_size(drive->queue,
1802 sectors_per_frame << SECTOR_BITS);
1804 /* First read just the header, so we know how long the TOC is. */
1805 stat = cdrom_read_tocentry(drive, 0, 1, 0, (char *) &toc->hdr,
1806 sizeof(struct atapi_toc_header), sense);
1810 if (info->cd_flags & IDE_CD_FLAG_TOCTRACKS_AS_BCD) {
1811 toc->hdr.first_track = BCD2BIN(toc->hdr.first_track);
1812 toc->hdr.last_track = BCD2BIN(toc->hdr.last_track);
1815 ntracks = toc->hdr.last_track - toc->hdr.first_track + 1;
1818 if (ntracks > MAX_TRACKS)
1819 ntracks = MAX_TRACKS;
1821 /* Now read the whole schmeer. */
1822 stat = cdrom_read_tocentry(drive, toc->hdr.first_track, 1, 0,
1824 sizeof(struct atapi_toc_header) +
1826 sizeof(struct atapi_toc_entry), sense);
1828 if (stat && toc->hdr.first_track > 1) {
1829 /* Cds with CDI tracks only don't have any TOC entries,
1830 despite of this the returned values are
1831 first_track == last_track = number of CDI tracks + 1,
1832 so that this case is indistinguishable from the same
1833 layout plus an additional audio track.
1834 If we get an error for the regular case, we assume
1835 a CDI without additional audio tracks. In this case
1836 the readable TOC is empty (CDI tracks are not included)
1837 and only holds the Leadout entry. Heiko Eißfeldt */
1839 stat = cdrom_read_tocentry(drive, CDROM_LEADOUT, 1, 0,
1841 sizeof(struct atapi_toc_header) +
1843 sizeof(struct atapi_toc_entry),
1848 if (info->cd_flags & IDE_CD_FLAG_TOCTRACKS_AS_BCD) {
1849 toc->hdr.first_track = (u8)BIN2BCD(CDROM_LEADOUT);
1850 toc->hdr.last_track = (u8)BIN2BCD(CDROM_LEADOUT);
1852 toc->hdr.first_track = CDROM_LEADOUT;
1853 toc->hdr.last_track = CDROM_LEADOUT;
1860 toc->hdr.toc_length = ntohs (toc->hdr.toc_length);
1862 if (info->cd_flags & IDE_CD_FLAG_TOCTRACKS_AS_BCD) {
1863 toc->hdr.first_track = BCD2BIN(toc->hdr.first_track);
1864 toc->hdr.last_track = BCD2BIN(toc->hdr.last_track);
1867 for (i = 0; i <= ntracks; i++) {
1868 if (info->cd_flags & IDE_CD_FLAG_TOCADDR_AS_BCD) {
1869 if (info->cd_flags & IDE_CD_FLAG_TOCTRACKS_AS_BCD)
1870 toc->ent[i].track = BCD2BIN(toc->ent[i].track);
1871 msf_from_bcd(&toc->ent[i].addr.msf);
1873 toc->ent[i].addr.lba = msf_to_lba (toc->ent[i].addr.msf.minute,
1874 toc->ent[i].addr.msf.second,
1875 toc->ent[i].addr.msf.frame);
1878 /* Read the multisession information. */
1879 if (toc->hdr.first_track != CDROM_LEADOUT) {
1880 /* Read the multisession information. */
1881 stat = cdrom_read_tocentry(drive, 0, 0, 1, (char *)&ms_tmp,
1882 sizeof(ms_tmp), sense);
1886 toc->last_session_lba = be32_to_cpu(ms_tmp.ent.addr.lba);
1888 ms_tmp.hdr.first_track = ms_tmp.hdr.last_track = CDROM_LEADOUT;
1889 toc->last_session_lba = msf_to_lba(0, 2, 0); /* 0m 2s 0f */
1892 if (info->cd_flags & IDE_CD_FLAG_TOCADDR_AS_BCD) {
1893 /* Re-read multisession information using MSF format */
1894 stat = cdrom_read_tocentry(drive, 0, 1, 1, (char *)&ms_tmp,
1895 sizeof(ms_tmp), sense);
1899 msf_from_bcd (&ms_tmp.ent.addr.msf);
1900 toc->last_session_lba = msf_to_lba(ms_tmp.ent.addr.msf.minute,
1901 ms_tmp.ent.addr.msf.second,
1902 ms_tmp.ent.addr.msf.frame);
1905 toc->xa_flag = (ms_tmp.hdr.first_track != ms_tmp.hdr.last_track);
1907 /* Now try to get the total cdrom capacity. */
1908 stat = cdrom_get_last_written(cdi, &last_written);
1909 if (!stat && (last_written > toc->capacity)) {
1910 toc->capacity = last_written;
1911 set_capacity(info->disk, toc->capacity * sectors_per_frame);
1912 drive->probed_capacity = toc->capacity * sectors_per_frame;
1915 /* Remember that we've read this stuff. */
1916 info->cd_flags |= IDE_CD_FLAG_TOC_VALID;
1921 /* the generic packet interface to cdrom.c */
1922 static int ide_cdrom_packet(struct cdrom_device_info *cdi,
1923 struct packet_command *cgc)
1926 ide_drive_t *drive = cdi->handle;
1928 if (cgc->timeout <= 0)
1929 cgc->timeout = ATAPI_WAIT_PC;
1931 /* here we queue the commands from the uniform CD-ROM
1932 layer. the packet must be complete, as we do not
1934 ide_cd_init_rq(drive, &req);
1935 memcpy(req.cmd, cgc->cmd, CDROM_PACKET_SIZE);
1937 memset(cgc->sense, 0, sizeof(struct request_sense));
1938 req.data = cgc->buffer;
1939 req.data_len = cgc->buflen;
1940 req.timeout = cgc->timeout;
1943 req.cmd_flags |= REQ_QUIET;
1945 req.sense = cgc->sense;
1946 cgc->stat = ide_cd_queue_pc(drive, &req);
1948 cgc->buflen -= req.data_len;
1953 int ide_cdrom_tray_move (struct cdrom_device_info *cdi, int position)
1955 ide_drive_t *drive = cdi->handle;
1956 struct request_sense sense;
1959 int stat = ide_cd_lockdoor(drive, 0, &sense);
1965 return cdrom_eject(drive, !position, &sense);
1968 int ide_cdrom_get_capabilities(ide_drive_t *drive, u8 *buf)
1970 struct cdrom_info *info = drive->driver_data;
1971 struct cdrom_device_info *cdi = &info->devinfo;
1972 struct packet_command cgc;
1973 int stat, attempts = 3, size = ATAPI_CAPABILITIES_PAGE_SIZE;
1975 if ((info->cd_flags & IDE_CD_FLAG_FULL_CAPS_PAGE) == 0)
1976 size -= ATAPI_CAPABILITIES_PAGE_PAD_SIZE;
1978 init_cdrom_command(&cgc, buf, size, CGC_DATA_UNKNOWN);
1979 do { /* we seem to get stat=0x01,err=0x00 the first time (??) */
1980 stat = cdrom_mode_sense(cdi, &cgc, GPMODE_CAPABILITIES_PAGE, 0);
1983 } while (--attempts);
1987 void ide_cdrom_update_speed(ide_drive_t *drive, u8 *buf)
1989 struct cdrom_info *cd = drive->driver_data;
1990 u16 curspeed, maxspeed;
1992 curspeed = *(u16 *)&buf[8 + 14];
1993 maxspeed = *(u16 *)&buf[8 + 8];
1995 if (cd->cd_flags & IDE_CD_FLAG_LE_SPEED_FIELDS) {
1996 curspeed = le16_to_cpu(curspeed);
1997 maxspeed = le16_to_cpu(maxspeed);
1999 curspeed = be16_to_cpu(curspeed);
2000 maxspeed = be16_to_cpu(maxspeed);
2003 cd->current_speed = (curspeed + (176/2)) / 176;
2004 cd->max_speed = (maxspeed + (176/2)) / 176;
2008 * add logic to try GET_EVENT command first to check for media and tray
2009 * status. this should be supported by newer cd-r/w and all DVD etc
2013 int ide_cdrom_drive_status (struct cdrom_device_info *cdi, int slot_nr)
2015 ide_drive_t *drive = cdi->handle;
2016 struct media_event_desc med;
2017 struct request_sense sense;
2020 if (slot_nr != CDSL_CURRENT)
2023 stat = cdrom_check_status(drive, &sense);
2024 if (!stat || sense.sense_key == UNIT_ATTENTION)
2027 if (!cdrom_get_media_event(cdi, &med)) {
2028 if (med.media_present)
2030 else if (med.door_open)
2031 return CDS_TRAY_OPEN;
2036 if (sense.sense_key == NOT_READY && sense.asc == 0x04 && sense.ascq == 0x04)
2040 * If not using Mt Fuji extended media tray reports,
2041 * just return TRAY_OPEN since ATAPI doesn't provide
2042 * any other way to detect this...
2044 if (sense.sense_key == NOT_READY) {
2045 if (sense.asc == 0x3a && sense.ascq == 1)
2048 return CDS_TRAY_OPEN;
2050 return CDS_DRIVE_NOT_READY;
2053 /****************************************************************************
2054 * Other driver requests (open, close, check media change).
2058 int ide_cdrom_check_media_change_real (struct cdrom_device_info *cdi,
2061 ide_drive_t *drive = cdi->handle;
2062 struct cdrom_info *cd = drive->driver_data;
2065 if (slot_nr == CDSL_CURRENT) {
2066 (void) cdrom_check_status(drive, NULL);
2067 retval = (cd->cd_flags & IDE_CD_FLAG_MEDIA_CHANGED) ? 1 : 0;
2068 cd->cd_flags &= ~IDE_CD_FLAG_MEDIA_CHANGED;
2077 int ide_cdrom_open_real (struct cdrom_device_info *cdi, int purpose)
2083 * Close down the device. Invalidate all cached blocks.
2087 void ide_cdrom_release_real (struct cdrom_device_info *cdi)
2089 ide_drive_t *drive = cdi->handle;
2090 struct cdrom_info *cd = drive->driver_data;
2092 if (!cdi->use_count)
2093 cd->cd_flags &= ~IDE_CD_FLAG_TOC_VALID;
2096 #define IDE_CD_CAPABILITIES \
2097 (CDC_CLOSE_TRAY | CDC_OPEN_TRAY | CDC_LOCK | CDC_SELECT_SPEED | \
2098 CDC_SELECT_DISC | CDC_MULTI_SESSION | CDC_MCN | CDC_MEDIA_CHANGED | \
2099 CDC_PLAY_AUDIO | CDC_RESET | CDC_DRIVE_STATUS | CDC_CD_R | \
2100 CDC_CD_RW | CDC_DVD | CDC_DVD_R | CDC_DVD_RAM | CDC_GENERIC_PACKET | \
2101 CDC_MO_DRIVE | CDC_MRW | CDC_MRW_W | CDC_RAM)
2103 static struct cdrom_device_ops ide_cdrom_dops = {
2104 .open = ide_cdrom_open_real,
2105 .release = ide_cdrom_release_real,
2106 .drive_status = ide_cdrom_drive_status,
2107 .media_changed = ide_cdrom_check_media_change_real,
2108 .tray_move = ide_cdrom_tray_move,
2109 .lock_door = ide_cdrom_lock_door,
2110 .select_speed = ide_cdrom_select_speed,
2111 .get_last_session = ide_cdrom_get_last_session,
2112 .get_mcn = ide_cdrom_get_mcn,
2113 .reset = ide_cdrom_reset,
2114 .audio_ioctl = ide_cdrom_audio_ioctl,
2115 .capability = IDE_CD_CAPABILITIES,
2116 .generic_packet = ide_cdrom_packet,
2119 static int ide_cdrom_register (ide_drive_t *drive, int nslots)
2121 struct cdrom_info *info = drive->driver_data;
2122 struct cdrom_device_info *devinfo = &info->devinfo;
2124 devinfo->ops = &ide_cdrom_dops;
2125 devinfo->speed = info->current_speed;
2126 devinfo->capacity = nslots;
2127 devinfo->handle = drive;
2128 strcpy(devinfo->name, drive->name);
2130 if (info->cd_flags & IDE_CD_FLAG_NO_SPEED_SELECT)
2131 devinfo->mask |= CDC_SELECT_SPEED;
2133 devinfo->disk = info->disk;
2134 return register_cdrom(devinfo);
2138 int ide_cdrom_probe_capabilities (ide_drive_t *drive)
2140 struct cdrom_info *cd = drive->driver_data;
2141 struct cdrom_device_info *cdi = &cd->devinfo;
2142 u8 buf[ATAPI_CAPABILITIES_PAGE_SIZE];
2143 mechtype_t mechtype;
2146 cdi->mask = (CDC_CD_R | CDC_CD_RW | CDC_DVD | CDC_DVD_R |
2147 CDC_DVD_RAM | CDC_SELECT_DISC | CDC_PLAY_AUDIO |
2148 CDC_MO_DRIVE | CDC_RAM);
2150 if (drive->media == ide_optical) {
2151 cdi->mask &= ~(CDC_MO_DRIVE | CDC_RAM);
2152 printk(KERN_ERR "%s: ATAPI magneto-optical drive\n", drive->name);
2156 if (cd->cd_flags & IDE_CD_FLAG_PRE_ATAPI12) {
2157 cd->cd_flags &= ~IDE_CD_FLAG_NO_EJECT;
2158 cdi->mask &= ~CDC_PLAY_AUDIO;
2163 * we have to cheat a little here. the packet will eventually
2164 * be queued with ide_cdrom_packet(), which extracts the
2165 * drive from cdi->handle. Since this device hasn't been
2166 * registered with the Uniform layer yet, it can't do this.
2167 * Same goes for cdi->ops.
2169 cdi->handle = drive;
2170 cdi->ops = &ide_cdrom_dops;
2172 if (ide_cdrom_get_capabilities(drive, buf))
2175 if ((buf[8 + 6] & 0x01) == 0)
2176 cd->cd_flags |= IDE_CD_FLAG_NO_DOORLOCK;
2177 if (buf[8 + 6] & 0x08)
2178 cd->cd_flags &= ~IDE_CD_FLAG_NO_EJECT;
2179 if (buf[8 + 3] & 0x01)
2180 cdi->mask &= ~CDC_CD_R;
2181 if (buf[8 + 3] & 0x02)
2182 cdi->mask &= ~(CDC_CD_RW | CDC_RAM);
2183 if (buf[8 + 2] & 0x38)
2184 cdi->mask &= ~CDC_DVD;
2185 if (buf[8 + 3] & 0x20)
2186 cdi->mask &= ~(CDC_DVD_RAM | CDC_RAM);
2187 if (buf[8 + 3] & 0x10)
2188 cdi->mask &= ~CDC_DVD_R;
2189 if ((buf[8 + 4] & 0x01) || (cd->cd_flags & IDE_CD_FLAG_PLAY_AUDIO_OK))
2190 cdi->mask &= ~CDC_PLAY_AUDIO;
2192 mechtype = buf[8 + 6] >> 5;
2193 if (mechtype == mechtype_caddy || mechtype == mechtype_popup)
2194 cdi->mask |= CDC_CLOSE_TRAY;
2196 if (cdi->sanyo_slot > 0) {
2197 cdi->mask &= ~CDC_SELECT_DISC;
2199 } else if (mechtype == mechtype_individual_changer ||
2200 mechtype == mechtype_cartridge_changer) {
2201 nslots = cdrom_number_of_slots(cdi);
2203 cdi->mask &= ~CDC_SELECT_DISC;
2206 ide_cdrom_update_speed(drive, buf);
2208 printk(KERN_INFO "%s: ATAPI", drive->name);
2210 /* don't print speed if the drive reported 0 */
2212 printk(KERN_CONT " %dX", cd->max_speed);
2214 printk(KERN_CONT " %s", (cdi->mask & CDC_DVD) ? "CD-ROM" : "DVD-ROM");
2216 if ((cdi->mask & CDC_DVD_R) == 0 || (cdi->mask & CDC_DVD_RAM) == 0)
2217 printk(KERN_CONT " DVD%s%s",
2218 (cdi->mask & CDC_DVD_R) ? "" : "-R",
2219 (cdi->mask & CDC_DVD_RAM) ? "" : "-RAM");
2221 if ((cdi->mask & CDC_CD_R) == 0 || (cdi->mask & CDC_CD_RW) == 0)
2222 printk(KERN_CONT " CD%s%s",
2223 (cdi->mask & CDC_CD_R) ? "" : "-R",
2224 (cdi->mask & CDC_CD_RW) ? "" : "/RW");
2226 if ((cdi->mask & CDC_SELECT_DISC) == 0)
2227 printk(KERN_CONT " changer w/%d slots", nslots);
2229 printk(KERN_CONT " drive");
2231 printk(KERN_CONT ", %dkB Cache\n", be16_to_cpu(*(u16 *)&buf[8 + 12]));
2236 #ifdef CONFIG_IDE_PROC_FS
2237 static void ide_cdrom_add_settings(ide_drive_t *drive)
2239 ide_add_setting(drive, "dsc_overlap", SETTING_RW, TYPE_BYTE, 0, 1, 1, 1, &drive->dsc_overlap, NULL);
2242 static inline void ide_cdrom_add_settings(ide_drive_t *drive) { ; }
2246 * standard prep_rq_fn that builds 10 byte cmds
2248 static int ide_cdrom_prep_fs(struct request_queue *q, struct request *rq)
2250 int hard_sect = queue_hardsect_size(q);
2251 long block = (long)rq->hard_sector / (hard_sect >> 9);
2252 unsigned long blocks = rq->hard_nr_sectors / (hard_sect >> 9);
2254 memset(rq->cmd, 0, sizeof(rq->cmd));
2256 if (rq_data_dir(rq) == READ)
2257 rq->cmd[0] = GPCMD_READ_10;
2259 rq->cmd[0] = GPCMD_WRITE_10;
2264 rq->cmd[2] = (block >> 24) & 0xff;
2265 rq->cmd[3] = (block >> 16) & 0xff;
2266 rq->cmd[4] = (block >> 8) & 0xff;
2267 rq->cmd[5] = block & 0xff;
2270 * and transfer length
2272 rq->cmd[7] = (blocks >> 8) & 0xff;
2273 rq->cmd[8] = blocks & 0xff;
2279 * Most of the SCSI commands are supported directly by ATAPI devices.
2280 * This transform handles the few exceptions.
2282 static int ide_cdrom_prep_pc(struct request *rq)
2287 * Transform 6-byte read/write commands to the 10-byte version
2289 if (c[0] == READ_6 || c[0] == WRITE_6) {
2296 c[0] += (READ_10 - READ_6);
2302 * it's silly to pretend we understand 6-byte sense commands, just
2303 * reject with ILLEGAL_REQUEST and the caller should take the
2304 * appropriate action
2306 if (c[0] == MODE_SENSE || c[0] == MODE_SELECT) {
2307 rq->errors = ILLEGAL_REQUEST;
2308 return BLKPREP_KILL;
2314 static int ide_cdrom_prep_fn(struct request_queue *q, struct request *rq)
2316 if (blk_fs_request(rq))
2317 return ide_cdrom_prep_fs(q, rq);
2318 else if (blk_pc_request(rq))
2319 return ide_cdrom_prep_pc(rq);
2324 struct cd_list_entry {
2325 const char *id_model;
2326 const char *id_firmware;
2327 unsigned int cd_flags;
2330 static const struct cd_list_entry ide_cd_quirks_list[] = {
2331 /* Limit transfer size per interrupt. */
2332 { "SAMSUNG CD-ROM SCR-2430", NULL, IDE_CD_FLAG_LIMIT_NFRAMES },
2333 { "SAMSUNG CD-ROM SCR-2432", NULL, IDE_CD_FLAG_LIMIT_NFRAMES },
2334 /* SCR-3231 doesn't support the SET_CD_SPEED command. */
2335 { "SAMSUNG CD-ROM SCR-3231", NULL, IDE_CD_FLAG_NO_SPEED_SELECT },
2336 /* Old NEC260 (not R) was released before ATAPI 1.2 spec. */
2337 { "NEC CD-ROM DRIVE:260", "1.01", IDE_CD_FLAG_TOCADDR_AS_BCD |
2338 IDE_CD_FLAG_PRE_ATAPI12, },
2339 /* Vertos 300, some versions of this drive like to talk BCD. */
2340 { "V003S0DS", NULL, IDE_CD_FLAG_VERTOS_300_SSD, },
2341 /* Vertos 600 ESD. */
2342 { "V006E0DS", NULL, IDE_CD_FLAG_VERTOS_600_ESD, },
2344 * Sanyo 3 CD changer uses a non-standard command for CD changing
2345 * (by default standard ATAPI support for CD changers is used).
2347 { "CD-ROM CDR-C3 G", NULL, IDE_CD_FLAG_SANYO_3CD },
2348 { "CD-ROM CDR-C3G", NULL, IDE_CD_FLAG_SANYO_3CD },
2349 { "CD-ROM CDR_C36", NULL, IDE_CD_FLAG_SANYO_3CD },
2350 /* Stingray 8X CD-ROM. */
2351 { "STINGRAY 8422 IDE 8X CD-ROM 7-27-95", NULL, IDE_CD_FLAG_PRE_ATAPI12},
2353 * ACER 50X CD-ROM and WPI 32X CD-ROM require the full spec length
2354 * mode sense page capabilities size, but older drives break.
2356 { "ATAPI CD ROM DRIVE 50X MAX", NULL, IDE_CD_FLAG_FULL_CAPS_PAGE },
2357 { "WPI CDS-32X", NULL, IDE_CD_FLAG_FULL_CAPS_PAGE },
2358 /* ACER/AOpen 24X CD-ROM has the speed fields byte-swapped. */
2359 { "", "241N", IDE_CD_FLAG_LE_SPEED_FIELDS },
2361 * Some drives used by Apple don't advertise audio play
2362 * but they do support reading TOC & audio datas.
2364 { "MATSHITADVD-ROM SR-8187", NULL, IDE_CD_FLAG_PLAY_AUDIO_OK },
2365 { "MATSHITADVD-ROM SR-8186", NULL, IDE_CD_FLAG_PLAY_AUDIO_OK },
2366 { "MATSHITADVD-ROM SR-8176", NULL, IDE_CD_FLAG_PLAY_AUDIO_OK },
2367 { "MATSHITADVD-ROM SR-8174", NULL, IDE_CD_FLAG_PLAY_AUDIO_OK },
2371 static unsigned int ide_cd_flags(struct hd_driveid *id)
2373 const struct cd_list_entry *cle = ide_cd_quirks_list;
2375 while (cle->id_model) {
2376 if (strcmp(cle->id_model, id->model) == 0 &&
2377 (cle->id_firmware == NULL ||
2378 strstr(id->fw_rev, cle->id_firmware)))
2379 return cle->cd_flags;
2387 int ide_cdrom_setup (ide_drive_t *drive)
2389 struct cdrom_info *cd = drive->driver_data;
2390 struct cdrom_device_info *cdi = &cd->devinfo;
2391 struct hd_driveid *id = drive->id;
2394 blk_queue_prep_rq(drive->queue, ide_cdrom_prep_fn);
2395 blk_queue_dma_alignment(drive->queue, 31);
2396 drive->queue->unplug_delay = (1 * HZ) / 1000;
2397 if (!drive->queue->unplug_delay)
2398 drive->queue->unplug_delay = 1;
2400 drive->special.all = 0;
2402 cd->cd_flags = IDE_CD_FLAG_MEDIA_CHANGED | IDE_CD_FLAG_NO_EJECT |
2405 if ((id->config & 0x0060) == 0x20)
2406 cd->cd_flags |= IDE_CD_FLAG_DRQ_INTERRUPT;
2408 if ((cd->cd_flags & IDE_CD_FLAG_VERTOS_300_SSD) &&
2409 id->fw_rev[4] == '1' && id->fw_rev[6] <= '2')
2410 cd->cd_flags |= (IDE_CD_FLAG_TOCTRACKS_AS_BCD |
2411 IDE_CD_FLAG_TOCADDR_AS_BCD);
2412 else if ((cd->cd_flags & IDE_CD_FLAG_VERTOS_600_ESD) &&
2413 id->fw_rev[4] == '1' && id->fw_rev[6] <= '2')
2414 cd->cd_flags |= IDE_CD_FLAG_TOCTRACKS_AS_BCD;
2415 else if (cd->cd_flags & IDE_CD_FLAG_SANYO_3CD)
2416 cdi->sanyo_slot = 3; /* 3 => use CD in slot 0 */
2418 nslots = ide_cdrom_probe_capabilities (drive);
2421 * set correct block size
2423 blk_queue_hardsect_size(drive->queue, CD_FRAMESIZE);
2425 if (drive->autotune == IDE_TUNE_DEFAULT ||
2426 drive->autotune == IDE_TUNE_AUTO)
2427 drive->dsc_overlap = (drive->next != drive);
2429 if (ide_cdrom_register(drive, nslots)) {
2430 printk (KERN_ERR "%s: ide_cdrom_setup failed to register device with the cdrom driver.\n", drive->name);
2431 cd->devinfo.handle = NULL;
2434 ide_cdrom_add_settings(drive);
2438 #ifdef CONFIG_IDE_PROC_FS
2440 sector_t ide_cdrom_capacity (ide_drive_t *drive)
2442 unsigned long capacity, sectors_per_frame;
2444 if (cdrom_read_capacity(drive, &capacity, §ors_per_frame, NULL))
2447 return capacity * sectors_per_frame;
2451 static void ide_cd_remove(ide_drive_t *drive)
2453 struct cdrom_info *info = drive->driver_data;
2455 ide_proc_unregister_driver(drive, info->driver);
2457 del_gendisk(info->disk);
2462 static void ide_cd_release(struct kref *kref)
2464 struct cdrom_info *info = to_ide_cd(kref);
2465 struct cdrom_device_info *devinfo = &info->devinfo;
2466 ide_drive_t *drive = info->drive;
2467 struct gendisk *g = info->disk;
2469 kfree(info->buffer);
2471 if (devinfo->handle == drive && unregister_cdrom(devinfo))
2472 printk(KERN_ERR "%s: %s failed to unregister device from the cdrom "
2473 "driver.\n", __FUNCTION__, drive->name);
2474 drive->dsc_overlap = 0;
2475 drive->driver_data = NULL;
2476 blk_queue_prep_rq(drive->queue, NULL);
2477 g->private_data = NULL;
2482 static int ide_cd_probe(ide_drive_t *);
2484 #ifdef CONFIG_IDE_PROC_FS
2485 static int proc_idecd_read_capacity
2486 (char *page, char **start, off_t off, int count, int *eof, void *data)
2488 ide_drive_t *drive = data;
2491 len = sprintf(page,"%llu\n", (long long)ide_cdrom_capacity(drive));
2492 PROC_IDE_READ_RETURN(page,start,off,count,eof,len);
2495 static ide_proc_entry_t idecd_proc[] = {
2496 { "capacity", S_IFREG|S_IRUGO, proc_idecd_read_capacity, NULL },
2497 { NULL, 0, NULL, NULL }
2501 static ide_driver_t ide_cdrom_driver = {
2503 .owner = THIS_MODULE,
2504 .name = "ide-cdrom",
2505 .bus = &ide_bus_type,
2507 .probe = ide_cd_probe,
2508 .remove = ide_cd_remove,
2509 .version = IDECD_VERSION,
2511 .supports_dsc_overlap = 1,
2512 .do_request = ide_do_rw_cdrom,
2513 .end_request = ide_end_request,
2514 .error = __ide_error,
2515 .abort = __ide_abort,
2516 #ifdef CONFIG_IDE_PROC_FS
2521 static int idecd_open(struct inode * inode, struct file * file)
2523 struct gendisk *disk = inode->i_bdev->bd_disk;
2524 struct cdrom_info *info;
2527 if (!(info = ide_cd_get(disk)))
2531 info->buffer = kmalloc(SECTOR_BUFFER_SIZE, GFP_KERNEL|__GFP_REPEAT);
2534 rc = cdrom_open(&info->devinfo, inode, file);
2542 static int idecd_release(struct inode * inode, struct file * file)
2544 struct gendisk *disk = inode->i_bdev->bd_disk;
2545 struct cdrom_info *info = ide_cd_g(disk);
2547 cdrom_release (&info->devinfo, file);
2554 static int idecd_set_spindown(struct cdrom_device_info *cdi, unsigned long arg)
2556 struct packet_command cgc;
2561 if (copy_from_user(&spindown, (void __user *)arg, sizeof(char)))
2564 init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_UNKNOWN);
2566 stat = cdrom_mode_sense(cdi, &cgc, GPMODE_CDROM_PAGE, 0);
2570 buffer[11] = (buffer[11] & 0xf0) | (spindown & 0x0f);
2571 return cdrom_mode_select(cdi, &cgc);
2574 static int idecd_get_spindown(struct cdrom_device_info *cdi, unsigned long arg)
2576 struct packet_command cgc;
2581 init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_UNKNOWN);
2583 stat = cdrom_mode_sense(cdi, &cgc, GPMODE_CDROM_PAGE, 0);
2587 spindown = buffer[11] & 0x0f;
2588 if (copy_to_user((void __user *)arg, &spindown, sizeof (char)))
2593 static int idecd_ioctl (struct inode *inode, struct file *file,
2594 unsigned int cmd, unsigned long arg)
2596 struct block_device *bdev = inode->i_bdev;
2597 struct cdrom_info *info = ide_cd_g(bdev->bd_disk);
2601 case CDROMSETSPINDOWN:
2602 return idecd_set_spindown(&info->devinfo, arg);
2603 case CDROMGETSPINDOWN:
2604 return idecd_get_spindown(&info->devinfo, arg);
2609 err = generic_ide_ioctl(info->drive, file, bdev, cmd, arg);
2611 err = cdrom_ioctl(file, &info->devinfo, inode, cmd, arg);
2616 static int idecd_media_changed(struct gendisk *disk)
2618 struct cdrom_info *info = ide_cd_g(disk);
2619 return cdrom_media_changed(&info->devinfo);
2622 static int idecd_revalidate_disk(struct gendisk *disk)
2624 struct cdrom_info *info = ide_cd_g(disk);
2625 struct request_sense sense;
2627 ide_cd_read_toc(info->drive, &sense);
2632 static struct block_device_operations idecd_ops = {
2633 .owner = THIS_MODULE,
2635 .release = idecd_release,
2636 .ioctl = idecd_ioctl,
2637 .media_changed = idecd_media_changed,
2638 .revalidate_disk= idecd_revalidate_disk
2642 static char *ignore = NULL;
2644 module_param(ignore, charp, 0400);
2645 MODULE_DESCRIPTION("ATAPI CD-ROM Driver");
2647 static int ide_cd_probe(ide_drive_t *drive)
2649 struct cdrom_info *info;
2651 struct request_sense sense;
2653 if (!strstr("ide-cdrom", drive->driver_req))
2655 if (!drive->present)
2657 if (drive->media != ide_cdrom && drive->media != ide_optical)
2659 /* skip drives that we were told to ignore */
2660 if (ignore != NULL) {
2661 if (strstr(ignore, drive->name)) {
2662 printk(KERN_INFO "ide-cd: ignoring drive %s\n", drive->name);
2667 printk(KERN_INFO "ide-cd: passing drive %s to ide-scsi emulation.\n", drive->name);
2670 info = kzalloc(sizeof(struct cdrom_info), GFP_KERNEL);
2672 printk(KERN_ERR "%s: Can't allocate a cdrom structure\n", drive->name);
2676 g = alloc_disk(1 << PARTN_BITS);
2680 ide_init_disk(g, drive);
2682 ide_proc_register_driver(drive, &ide_cdrom_driver);
2684 kref_init(&info->kref);
2686 info->drive = drive;
2687 info->driver = &ide_cdrom_driver;
2690 g->private_data = &info->driver;
2692 drive->driver_data = info;
2695 g->driverfs_dev = &drive->gendev;
2696 g->flags = GENHD_FL_CD | GENHD_FL_REMOVABLE;
2697 if (ide_cdrom_setup(drive)) {
2698 ide_proc_unregister_driver(drive, &ide_cdrom_driver);
2699 ide_cd_release(&info->kref);
2703 ide_cd_read_toc(drive, &sense);
2704 g->fops = &idecd_ops;
2705 g->flags |= GENHD_FL_REMOVABLE;
2715 static void __exit ide_cdrom_exit(void)
2717 driver_unregister(&ide_cdrom_driver.gen_driver);
2720 static int __init ide_cdrom_init(void)
2722 return driver_register(&ide_cdrom_driver.gen_driver);
2725 MODULE_ALIAS("ide:*m-cdrom*");
2726 MODULE_ALIAS("ide-cd");
2727 module_init(ide_cdrom_init);
2728 module_exit(ide_cdrom_exit);
2729 MODULE_LICENSE("GPL");