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. ;-)
17 * Mt. Fuji (SFF8090 version 4) and ATAPI (SFF-8020i rev 2.6) standards.
19 * For historical changelog please see:
20 * Documentation/ide/ChangeLog.ide-cd.1994-2004
23 #define DRV_NAME "ide-cd"
24 #define PFX DRV_NAME ": "
26 #define IDECD_VERSION "5.00"
28 #include <linux/module.h>
29 #include <linux/types.h>
30 #include <linux/kernel.h>
31 #include <linux/delay.h>
32 #include <linux/timer.h>
33 #include <linux/slab.h>
34 #include <linux/interrupt.h>
35 #include <linux/errno.h>
36 #include <linux/cdrom.h>
37 #include <linux/ide.h>
38 #include <linux/completion.h>
39 #include <linux/mutex.h>
40 #include <linux/bcd.h>
42 /* For SCSI -> ATAPI command conversion */
43 #include <scsi/scsi.h>
45 #include <linux/irq.h>
47 #include <asm/byteorder.h>
48 #include <linux/uaccess.h>
49 #include <asm/unaligned.h>
53 static DEFINE_MUTEX(idecd_ref_mutex);
55 static void ide_cd_release(struct device *);
57 static struct cdrom_info *ide_cd_get(struct gendisk *disk)
59 struct cdrom_info *cd = NULL;
61 mutex_lock(&idecd_ref_mutex);
62 cd = ide_drv_g(disk, cdrom_info);
64 if (ide_device_get(cd->drive))
70 mutex_unlock(&idecd_ref_mutex);
74 static void ide_cd_put(struct cdrom_info *cd)
76 ide_drive_t *drive = cd->drive;
78 mutex_lock(&idecd_ref_mutex);
80 ide_device_put(drive);
81 mutex_unlock(&idecd_ref_mutex);
85 * Generic packet command support and error handling routines.
88 /* Mark that we've seen a media change and invalidate our internal buffers. */
89 static void cdrom_saw_media_change(ide_drive_t *drive)
91 drive->dev_flags |= IDE_DFLAG_MEDIA_CHANGED;
92 drive->atapi_flags &= ~IDE_AFLAG_TOC_VALID;
95 static int cdrom_log_sense(ide_drive_t *drive, struct request *rq,
96 struct request_sense *sense)
100 ide_debug_log(IDE_DBG_SENSE, "sense_key: 0x%x", sense->sense_key);
102 if (!sense || !rq || (rq->cmd_flags & REQ_QUIET))
105 switch (sense->sense_key) {
107 case RECOVERED_ERROR:
111 * don't care about tray state messages for e.g. capacity
112 * commands or in-progress or becoming ready
114 if (sense->asc == 0x3a || sense->asc == 0x04)
118 case ILLEGAL_REQUEST:
120 * don't log START_STOP unit with LoEj set, since we cannot
121 * reliably check if drive can auto-close
123 if (rq->cmd[0] == GPCMD_START_STOP_UNIT && sense->asc == 0x24)
129 * Make good and sure we've seen this potential media change.
130 * Some drives (i.e. Creative) fail to present the correct sense
131 * key in the error register.
133 cdrom_saw_media_change(drive);
142 static void cdrom_analyze_sense_data(ide_drive_t *drive,
143 struct request *failed_command,
144 struct request_sense *sense)
146 unsigned long sector;
147 unsigned long bio_sectors;
148 struct cdrom_info *info = drive->driver_data;
150 ide_debug_log(IDE_DBG_SENSE, "error_code: 0x%x, sense_key: 0x%x",
151 sense->error_code, sense->sense_key);
154 ide_debug_log(IDE_DBG_SENSE, "failed cmd: 0x%x",
155 failed_command->cmd[0]);
157 if (!cdrom_log_sense(drive, failed_command, sense))
161 * If a read toc is executed for a CD-R or CD-RW medium where the first
162 * toc has not been recorded yet, it will fail with 05/24/00 (which is a
165 if (failed_command && failed_command->cmd[0] == GPCMD_READ_TOC_PMA_ATIP)
166 if (sense->sense_key == 0x05 && sense->asc == 0x24)
170 if (sense->error_code == 0x70) {
171 switch (sense->sense_key) {
173 case VOLUME_OVERFLOW:
174 case ILLEGAL_REQUEST:
177 if (failed_command == NULL ||
178 !blk_fs_request(failed_command))
180 sector = (sense->information[0] << 24) |
181 (sense->information[1] << 16) |
182 (sense->information[2] << 8) |
183 (sense->information[3]);
185 if (drive->queue->hardsect_size == 2048)
186 /* device sector size is 2K */
189 bio_sectors = max(bio_sectors(failed_command->bio), 4U);
190 sector &= ~(bio_sectors - 1);
193 * The SCSI specification allows for the value
194 * returned by READ CAPACITY to be up to 75 2K
195 * sectors past the last readable block.
196 * Therefore, if we hit a medium error within the
197 * last 75 2K sectors, we decrease the saved size
200 if (sector < get_capacity(info->disk) &&
201 drive->probed_capacity - sector < 4 * 75)
202 set_capacity(info->disk, sector);
206 ide_cd_log_error(drive->name, failed_command, sense);
209 static void cdrom_queue_request_sense(ide_drive_t *drive, void *sense,
210 struct request *failed_command)
212 struct cdrom_info *info = drive->driver_data;
213 struct request *rq = &drive->request_sense_rq;
215 ide_debug_log(IDE_DBG_SENSE, "enter");
218 sense = &info->sense_data;
220 /* stuff the sense request in front of our current request */
221 blk_rq_init(NULL, rq);
222 rq->cmd_type = REQ_TYPE_ATA_PC;
223 rq->rq_disk = info->disk;
226 rq->cmd[0] = GPCMD_REQUEST_SENSE;
230 rq->cmd_type = REQ_TYPE_SENSE;
231 rq->cmd_flags |= REQ_PREEMPT;
233 /* NOTE! Save the failed command in "rq->buffer" */
234 rq->buffer = (void *) failed_command;
237 ide_debug_log(IDE_DBG_SENSE, "failed_cmd: 0x%x",
238 failed_command->cmd[0]);
240 drive->hwif->rq = NULL;
242 elv_add_request(drive->queue, rq, ELEVATOR_INSERT_FRONT, 0);
245 static void ide_cd_complete_failed_rq(ide_drive_t *drive, struct request *rq)
248 * For REQ_TYPE_SENSE, "rq->buffer" points to the original
251 struct request *failed = (struct request *)rq->buffer;
252 struct cdrom_info *info = drive->driver_data;
253 void *sense = &info->sense_data;
257 sense = failed->sense;
258 failed->sense_len = rq->sense_len;
260 cdrom_analyze_sense_data(drive, failed, sense);
262 if (ide_end_rq(drive, failed, -EIO, blk_rq_bytes(failed)))
265 cdrom_analyze_sense_data(drive, NULL, sense);
270 * 0: if the request should be continued.
271 * 1: if the request will be going through error recovery.
272 * 2: if the request should be ended.
274 static int cdrom_decode_status(ide_drive_t *drive, int good_stat, int *stat_ret)
276 ide_hwif_t *hwif = drive->hwif;
277 struct request *rq = hwif->rq;
278 int stat, err, sense_key;
280 /* check for errors */
281 stat = hwif->tp_ops->read_status(hwif);
286 if (OK_STAT(stat, good_stat, BAD_R_STAT))
289 /* get the IDE error register */
290 err = ide_read_error(drive);
291 sense_key = err >> 4;
293 ide_debug_log(IDE_DBG_RQ, "stat: 0x%x, good_stat: 0x%x, cmd[0]: 0x%x, "
294 "rq->cmd_type: 0x%x, err: 0x%x",
295 stat, good_stat, rq->cmd[0], rq->cmd_type,
298 if (blk_sense_request(rq)) {
300 * We got an error trying to get sense info from the drive
301 * (probably while trying to recover from a former error).
304 rq->cmd_flags |= REQ_FAILED;
306 } else if (blk_pc_request(rq) || rq->cmd_type == REQ_TYPE_ATA_PC) {
307 /* All other functions, except for READ. */
310 * if we have an error, pass back CHECK_CONDITION as the
313 if (blk_pc_request(rq) && !rq->errors)
314 rq->errors = SAM_STAT_CHECK_CONDITION;
316 /* check for tray open */
317 if (sense_key == NOT_READY) {
318 cdrom_saw_media_change(drive);
319 } else if (sense_key == UNIT_ATTENTION) {
320 /* check for media change */
321 cdrom_saw_media_change(drive);
323 } else if (sense_key == ILLEGAL_REQUEST &&
324 rq->cmd[0] == GPCMD_START_STOP_UNIT) {
326 * Don't print error message for this condition--
327 * SFF8090i indicates that 5/24/00 is the correct
328 * response to a request to close the tray if the
329 * drive doesn't have that capability.
330 * cdrom_log_sense() knows this!
332 } else if (!(rq->cmd_flags & REQ_QUIET)) {
333 /* otherwise, print an error */
334 ide_dump_status(drive, "packet command error", stat);
337 rq->cmd_flags |= REQ_FAILED;
340 * instead of playing games with moving completions around,
341 * remove failed request completely and end it when the
342 * request sense has completed
346 } else if (blk_fs_request(rq)) {
347 int do_end_request = 0;
349 /* handle errors from READ and WRITE requests */
351 if (blk_noretry_request(rq))
354 if (sense_key == NOT_READY) {
356 if (rq_data_dir(rq) == READ) {
357 cdrom_saw_media_change(drive);
359 /* fail the request */
360 printk(KERN_ERR PFX "%s: tray open\n",
364 struct cdrom_info *info = drive->driver_data;
367 * Allow the drive 5 seconds to recover, some
368 * devices will return this error while flushing
372 info->write_timeout = jiffies +
373 ATAPI_WAIT_WRITE_BUSY;
375 if (time_after(jiffies, info->write_timeout))
378 struct request_queue *q = drive->queue;
382 * take a breather relying on the unplug
383 * timer to kick us again
385 spin_lock_irqsave(q->queue_lock, flags);
387 spin_unlock_irqrestore(q->queue_lock, flags);
392 } else if (sense_key == UNIT_ATTENTION) {
394 cdrom_saw_media_change(drive);
397 * Arrange to retry the request but be sure to give up
398 * if we've retried too many times.
400 if (++rq->errors > ERROR_MAX)
402 } else if (sense_key == ILLEGAL_REQUEST ||
403 sense_key == DATA_PROTECT) {
405 * No point in retrying after an illegal request or data
408 ide_dump_status(drive, "command error", stat);
410 } else if (sense_key == MEDIUM_ERROR) {
412 * No point in re-trying a zillion times on a bad
413 * sector. If we got here the error is not correctable.
415 ide_dump_status(drive, "media error (bad sector)",
418 } else if (sense_key == BLANK_CHECK) {
419 /* disk appears blank ?? */
420 ide_dump_status(drive, "media error (blank)", stat);
422 } else if ((err & ~ATA_ABORTED) != 0) {
423 /* go to the default handler for other errors */
424 ide_error(drive, "cdrom_decode_status", stat);
426 } else if ((++rq->errors > ERROR_MAX)) {
427 /* we've racked up too many retries, abort */
432 * End a request through request sense analysis when we have
433 * sense data. We need this in order to perform end of media
440 * If we got a CHECK_CONDITION status, queue
441 * a request sense command.
444 cdrom_queue_request_sense(drive, NULL, NULL);
447 blk_dump_rq_flags(rq, PFX "bad rq");
452 if (stat & ATA_ERR) {
453 struct request_queue *q = drive->queue;
456 spin_lock_irqsave(q->queue_lock, flags);
457 blkdev_dequeue_request(rq);
458 spin_unlock_irqrestore(q->queue_lock, flags);
462 cdrom_queue_request_sense(drive, rq->sense, rq);
469 * Check the contents of the interrupt reason register from the cdrom
470 * and attempt to recover if there are problems. Returns 0 if everything's
471 * ok; nonzero if the request has been terminated.
473 static int ide_cd_check_ireason(ide_drive_t *drive, struct request *rq,
474 int len, int ireason, int rw)
476 ide_hwif_t *hwif = drive->hwif;
478 ide_debug_log(IDE_DBG_FUNC, "ireason: 0x%x, rw: 0x%x", ireason, rw);
481 * ireason == 0: the drive wants to receive data from us
482 * ireason == 2: the drive is expecting to transfer data to us
484 if (ireason == (!rw << 1))
486 else if (ireason == (rw << 1)) {
489 printk(KERN_ERR PFX "%s: %s: wrong transfer direction!\n",
490 drive->name, __func__);
492 ide_pad_transfer(drive, rw, len);
493 } else if (rw == 0 && ireason == 1) {
495 * Some drives (ASUS) seem to tell us that status info is
496 * available. Just get it and ignore.
498 (void)hwif->tp_ops->read_status(hwif);
501 /* drive wants a command packet, or invalid ireason... */
502 printk(KERN_ERR PFX "%s: %s: bad interrupt reason 0x%02x\n",
503 drive->name, __func__, ireason);
506 if (rq->cmd_type == REQ_TYPE_ATA_PC)
507 rq->cmd_flags |= REQ_FAILED;
513 * Assume that the drive will always provide data in multiples of at least
514 * SECTOR_SIZE, as it gets hairy to keep track of the transfers otherwise.
516 static int ide_cd_check_transfer_size(ide_drive_t *drive, int len)
518 ide_debug_log(IDE_DBG_FUNC, "len: %d", len);
520 if ((len % SECTOR_SIZE) == 0)
523 printk(KERN_ERR PFX "%s: %s: Bad transfer size %d\n", drive->name,
526 if (drive->atapi_flags & IDE_AFLAG_LIMIT_NFRAMES)
527 printk(KERN_ERR PFX "This drive is not supported by this "
528 "version of the driver\n");
530 printk(KERN_ERR PFX "Trying to limit transfer sizes\n");
531 drive->atapi_flags |= IDE_AFLAG_LIMIT_NFRAMES;
537 static ide_startstop_t ide_cd_prepare_rw_request(ide_drive_t *drive,
540 ide_debug_log(IDE_DBG_RQ, "rq->cmd_flags: 0x%x", rq->cmd_flags);
542 /* set up the command */
543 rq->timeout = ATAPI_WAIT_PC;
548 static void ide_cd_request_sense_fixup(ide_drive_t *drive, struct request *rq)
550 ide_debug_log(IDE_DBG_FUNC, "rq->cmd[0]: 0x%x", rq->cmd[0]);
553 * Some of the trailing request sense fields are optional,
554 * and some drives don't send them. Sigh.
556 if (rq->cmd[0] == GPCMD_REQUEST_SENSE &&
557 rq->data_len > 0 && rq->data_len <= 5)
558 while (rq->data_len > 0) {
559 *(u8 *)rq->data++ = 0;
564 int ide_cd_queue_pc(ide_drive_t *drive, const unsigned char *cmd,
565 int write, void *buffer, unsigned *bufflen,
566 struct request_sense *sense, int timeout,
567 unsigned int cmd_flags)
569 struct cdrom_info *info = drive->driver_data;
570 struct request_sense local_sense;
572 unsigned int flags = 0;
575 sense = &local_sense;
577 ide_debug_log(IDE_DBG_PC, "cmd[0]: 0x%x, write: 0x%x, timeout: %d, "
579 cmd[0], write, timeout, cmd_flags);
581 /* start of retry loop */
586 rq = blk_get_request(drive->queue, write, __GFP_WAIT);
588 memcpy(rq->cmd, cmd, BLK_MAX_CDB);
589 rq->cmd_type = REQ_TYPE_ATA_PC;
591 rq->cmd_flags |= cmd_flags;
592 rq->timeout = timeout;
595 rq->data_len = *bufflen;
598 error = blk_execute_rq(drive->queue, info->disk, rq, 0);
601 *bufflen = rq->data_len;
603 flags = rq->cmd_flags;
607 * FIXME: we should probably abort/retry or something in case of
610 if (flags & REQ_FAILED) {
612 * The request failed. Retry if it was due to a unit
613 * attention status (usually means media was changed).
615 struct request_sense *reqbuf = sense;
617 if (reqbuf->sense_key == UNIT_ATTENTION)
618 cdrom_saw_media_change(drive);
619 else if (reqbuf->sense_key == NOT_READY &&
620 reqbuf->asc == 4 && reqbuf->ascq != 4) {
622 * The drive is in the process of loading
623 * a disk. Retry, but wait a little to give
624 * the drive time to complete the load.
628 /* otherwise, don't retry */
634 /* end of retry loop */
635 } while ((flags & REQ_FAILED) && retries >= 0);
637 /* return an error if the command failed */
638 return (flags & REQ_FAILED) ? -EIO : 0;
641 static void ide_cd_error_cmd(ide_drive_t *drive, struct ide_cmd *cmd)
643 unsigned int nr_bytes = cmd->nbytes - cmd->nleft;
645 if (cmd->tf_flags & IDE_TFLAG_WRITE)
646 nr_bytes -= cmd->last_xfer_len;
649 ide_complete_rq(drive, 0, nr_bytes);
653 * Called from blk_end_request_callback() after the data of the request is
654 * completed and before the request itself is completed. By returning value '1',
655 * blk_end_request_callback() returns immediately without completing it.
657 static int cdrom_newpc_intr_dummy_cb(struct request *rq)
662 static ide_startstop_t cdrom_newpc_intr(ide_drive_t *drive)
664 ide_hwif_t *hwif = drive->hwif;
665 struct ide_cmd *cmd = &hwif->cmd;
666 struct request *rq = hwif->rq;
667 xfer_func_t *xferfunc;
668 ide_expiry_t *expiry = NULL;
669 int dma_error = 0, dma, stat, thislen, uptodate = 0;
670 int write = (rq_data_dir(rq) == WRITE) ? 1 : 0, rc, nsectors;
671 int sense = blk_sense_request(rq);
672 unsigned int timeout;
676 ide_debug_log(IDE_DBG_PC, "cmd[0]: 0x%x, write: 0x%x",
679 /* check for errors */
683 dma_error = hwif->dma_ops->dma_end(drive);
685 printk(KERN_ERR PFX "%s: DMA %s error\n", drive->name,
686 write ? "write" : "read");
691 rc = cdrom_decode_status(drive, 0, &stat);
698 /* using dma, transfer is complete now */
701 return ide_error(drive, "dma error", stat);
702 if (blk_fs_request(rq)) {
703 ide_complete_rq(drive, 0, rq->nr_sectors
704 ? (rq->nr_sectors << 9) : ide_rq_bytes(rq));
706 } else if (rq->cmd_type == REQ_TYPE_ATA_PC && !rq->bio) {
707 ide_complete_rq(drive, 0, 512);
710 if (blk_pc_request(rq) == 0 && uptodate == 0)
711 rq->cmd_flags |= REQ_FAILED;
715 ide_read_bcount_and_ireason(drive, &len, &ireason);
717 thislen = blk_fs_request(rq) ? len : rq->data_len;
721 ide_debug_log(IDE_DBG_PC, "DRQ: stat: 0x%x, thislen: %d",
724 /* If DRQ is clear, the command has completed. */
725 if ((stat & ATA_DRQ) == 0) {
726 if (blk_fs_request(rq)) {
728 * If we're not done reading/writing, complain.
729 * Otherwise, complete the command normally.
732 if (cmd->nleft > 0) {
733 printk(KERN_ERR PFX "%s: %s: data underrun "
734 "(%u bytes)\n", drive->name, __func__,
737 rq->cmd_flags |= REQ_FAILED;
740 } else if (!blk_pc_request(rq)) {
741 ide_cd_request_sense_fixup(drive, rq);
742 /* complain if we still have data left to transfer */
743 uptodate = rq->data_len ? 0 : 1;
745 rq->cmd_flags |= REQ_FAILED;
750 /* check which way to transfer data */
751 rc = ide_cd_check_ireason(drive, rq, len, ireason, write);
755 if (blk_fs_request(rq)) {
757 if (ide_cd_check_transfer_size(drive, len))
760 cmd->last_xfer_len = 0;
765 xferfunc = hwif->tp_ops->output_data;
768 xferfunc = hwif->tp_ops->input_data;
771 ide_debug_log(IDE_DBG_PC, "data transfer, rq->cmd_type: 0x%x, "
773 rq->cmd_type, ireason);
776 while (thislen > 0) {
777 u8 *ptr = blk_fs_request(rq) ? NULL : rq->data;
778 int blen = rq->data_len;
782 if (blk_fs_request(rq)) {
783 blen = min_t(int, thislen, cmd->nleft);
785 ptr = bio_data(rq->bio);
786 blen = bio_iovec(rq->bio)->bv_len;
790 if ((blk_fs_request(rq) && cmd->nleft == 0) ||
791 (blk_fs_request(rq) == 0 && ptr == NULL)) {
792 if (blk_fs_request(rq) && !write)
794 * If the buffers are full, pipe the rest into
797 ide_pad_transfer(drive, 0, thislen);
799 printk(KERN_ERR PFX "%s: confused, missing data\n",
801 blk_dump_rq_flags(rq, rq_data_dir(rq)
802 ? "cdrom_newpc_intr, write"
803 : "cdrom_newpc_intr, read");
811 if (blk_fs_request(rq)) {
812 ide_pio_bytes(drive, cmd, write, blen);
813 cmd->last_xfer_len += blen;
815 xferfunc(drive, NULL, ptr, blen);
820 if (blk_fs_request(rq) == 0) {
821 rq->data_len -= blen;
824 * The request can't be completed until DRQ is cleared.
825 * So complete the data, but don't complete the request
826 * using the dummy function for the callback feature
827 * of blk_end_request_callback().
830 blk_end_request_callback(rq, 0, blen,
831 cdrom_newpc_intr_dummy_cb);
835 if (sense && write == 0)
836 rq->sense_len += blen;
839 /* pad, if necessary */
840 if (!blk_fs_request(rq) && len > 0)
841 ide_pad_transfer(drive, write, len);
843 if (blk_pc_request(rq)) {
844 timeout = rq->timeout;
846 timeout = ATAPI_WAIT_PC;
847 if (!blk_fs_request(rq))
848 expiry = ide_cd_expiry;
851 hwif->expiry = expiry;
852 ide_set_handler(drive, cdrom_newpc_intr, timeout);
856 if (blk_pc_request(rq) && rc == 0) {
857 unsigned int dlen = rq->data_len;
862 if (blk_end_request(rq, 0, dlen))
867 if (sense && uptodate)
868 ide_cd_complete_failed_rq(drive, rq);
870 if (blk_fs_request(rq)) {
874 ide_cd_error_cmd(drive, cmd);
876 if (uptodate <= 0 && rq->errors == 0)
880 /* make sure it's fully ended */
881 if (blk_pc_request(rq))
882 nsectors = (rq->data_len + 511) >> 9;
884 nsectors = rq->hard_nr_sectors;
889 ide_complete_rq(drive, uptodate ? 0 : -EIO, nsectors << 9);
891 if (sense && rc == 2)
892 ide_error(drive, "request sense failure", stat);
897 static ide_startstop_t cdrom_start_rw(ide_drive_t *drive, struct request *rq)
899 struct cdrom_info *cd = drive->driver_data;
900 struct request_queue *q = drive->queue;
901 int write = rq_data_dir(rq) == WRITE;
902 unsigned short sectors_per_frame =
903 queue_hardsect_size(q) >> SECTOR_BITS;
905 ide_debug_log(IDE_DBG_RQ, "rq->cmd[0]: 0x%x, write: 0x%x, "
906 "secs_per_frame: %u",
907 rq->cmd[0], write, sectors_per_frame);
910 /* disk has become write protected */
911 if (get_disk_ro(cd->disk))
915 * We may be retrying this request after an error. Fix up any
916 * weirdness which might be present in the request packet.
918 q->prep_rq_fn(q, rq);
921 /* fs requests *must* be hardware frame aligned */
922 if ((rq->nr_sectors & (sectors_per_frame - 1)) ||
923 (rq->sector & (sectors_per_frame - 1)))
926 /* use DMA, if possible */
927 drive->dma = !!(drive->dev_flags & IDE_DFLAG_USING_DMA);
930 cd->devinfo.media_written = 1;
935 static void cdrom_do_block_pc(ide_drive_t *drive, struct request *rq)
938 ide_debug_log(IDE_DBG_PC, "rq->cmd[0]: 0x%x, rq->cmd_type: 0x%x",
939 rq->cmd[0], rq->cmd_type);
941 if (blk_pc_request(rq))
942 rq->cmd_flags |= REQ_QUIET;
944 rq->cmd_flags &= ~REQ_FAILED;
949 if (rq->bio || ((rq->cmd_type == REQ_TYPE_ATA_PC) && rq->data_len)) {
950 struct request_queue *q = drive->queue;
951 unsigned int alignment;
955 buf = bio_data(rq->bio);
959 drive->dma = !!(drive->dev_flags & IDE_DFLAG_USING_DMA);
962 * check if dma is safe
964 * NOTE! The "len" and "addr" checks should possibly have
967 alignment = queue_dma_alignment(q) | q->dma_pad_mask;
968 if ((unsigned long)buf & alignment
969 || rq->data_len & q->dma_pad_mask
970 || object_is_on_stack(buf))
975 static ide_startstop_t ide_cd_do_request(ide_drive_t *drive, struct request *rq,
979 int uptodate = 0, nsectors;
981 ide_debug_log(IDE_DBG_RQ, "cmd: 0x%x, block: %llu",
982 rq->cmd[0], (unsigned long long)block);
984 if (drive->debug_mask & IDE_DBG_RQ)
985 blk_dump_rq_flags(rq, "ide_cd_do_request");
987 if (blk_fs_request(rq)) {
988 if (cdrom_start_rw(drive, rq) == ide_stopped ||
989 ide_cd_prepare_rw_request(drive, rq) == ide_stopped) {
992 } else if (blk_sense_request(rq) || blk_pc_request(rq) ||
993 rq->cmd_type == REQ_TYPE_ATA_PC) {
995 rq->timeout = ATAPI_WAIT_PC;
997 cdrom_do_block_pc(drive, rq);
998 } else if (blk_special_request(rq)) {
999 /* right now this can only be a reset... */
1003 blk_dump_rq_flags(rq, DRV_NAME " bad flags");
1004 if (rq->errors == 0)
1009 memset(&cmd, 0, sizeof(cmd));
1011 if (rq_data_dir(rq))
1012 cmd.tf_flags |= IDE_TFLAG_WRITE;
1016 if (blk_fs_request(rq)) {
1017 ide_init_sg_cmd(&cmd, rq->nr_sectors << 9);
1018 ide_map_sg(drive, &cmd);
1021 return ide_issue_pc(drive, &cmd);
1023 nsectors = rq->hard_nr_sectors;
1028 ide_complete_rq(drive, uptodate ? 0 : -EIO, nsectors << 9);
1036 * Routines which queue packet commands take as a final argument a pointer to a
1037 * request_sense struct. If execution of the command results in an error with a
1038 * CHECK CONDITION status, this structure will be filled with the results of the
1039 * subsequent request sense command. The pointer can also be NULL, in which case
1040 * no sense information is returned.
1042 static void msf_from_bcd(struct atapi_msf *msf)
1044 msf->minute = bcd2bin(msf->minute);
1045 msf->second = bcd2bin(msf->second);
1046 msf->frame = bcd2bin(msf->frame);
1049 int cdrom_check_status(ide_drive_t *drive, struct request_sense *sense)
1051 struct cdrom_info *info = drive->driver_data;
1052 struct cdrom_device_info *cdi = &info->devinfo;
1053 unsigned char cmd[BLK_MAX_CDB];
1055 ide_debug_log(IDE_DBG_FUNC, "enter");
1057 memset(cmd, 0, BLK_MAX_CDB);
1058 cmd[0] = GPCMD_TEST_UNIT_READY;
1061 * Sanyo 3 CD changer uses byte 7 of TEST_UNIT_READY to switch CDs
1062 * instead of supporting the LOAD_UNLOAD opcode.
1064 cmd[7] = cdi->sanyo_slot % 3;
1066 return ide_cd_queue_pc(drive, cmd, 0, NULL, NULL, sense, 0, REQ_QUIET);
1069 static int cdrom_read_capacity(ide_drive_t *drive, unsigned long *capacity,
1070 unsigned long *sectors_per_frame,
1071 struct request_sense *sense)
1079 unsigned char cmd[BLK_MAX_CDB];
1080 unsigned len = sizeof(capbuf);
1083 ide_debug_log(IDE_DBG_FUNC, "enter");
1085 memset(cmd, 0, BLK_MAX_CDB);
1086 cmd[0] = GPCMD_READ_CDVD_CAPACITY;
1088 stat = ide_cd_queue_pc(drive, cmd, 0, &capbuf, &len, sense, 0,
1094 * Sanity check the given block size
1096 blocklen = be32_to_cpu(capbuf.blocklen);
1104 printk(KERN_ERR PFX "%s: weird block size %u\n",
1105 drive->name, blocklen);
1106 printk(KERN_ERR PFX "%s: default to 2kb block size\n",
1112 *capacity = 1 + be32_to_cpu(capbuf.lba);
1113 *sectors_per_frame = blocklen >> SECTOR_BITS;
1115 ide_debug_log(IDE_DBG_PROBE, "cap: %lu, sectors_per_frame: %lu",
1116 *capacity, *sectors_per_frame);
1121 static int cdrom_read_tocentry(ide_drive_t *drive, int trackno, int msf_flag,
1122 int format, char *buf, int buflen,
1123 struct request_sense *sense)
1125 unsigned char cmd[BLK_MAX_CDB];
1127 ide_debug_log(IDE_DBG_FUNC, "enter");
1129 memset(cmd, 0, BLK_MAX_CDB);
1131 cmd[0] = GPCMD_READ_TOC_PMA_ATIP;
1133 cmd[7] = (buflen >> 8);
1134 cmd[8] = (buflen & 0xff);
1135 cmd[9] = (format << 6);
1140 return ide_cd_queue_pc(drive, cmd, 0, buf, &buflen, sense, 0, REQ_QUIET);
1143 /* Try to read the entire TOC for the disk into our internal buffer. */
1144 int ide_cd_read_toc(ide_drive_t *drive, struct request_sense *sense)
1146 int stat, ntracks, i;
1147 struct cdrom_info *info = drive->driver_data;
1148 struct cdrom_device_info *cdi = &info->devinfo;
1149 struct atapi_toc *toc = info->toc;
1151 struct atapi_toc_header hdr;
1152 struct atapi_toc_entry ent;
1155 unsigned long sectors_per_frame = SECTORS_PER_FRAME;
1157 ide_debug_log(IDE_DBG_FUNC, "enter");
1160 /* try to allocate space */
1161 toc = kmalloc(sizeof(struct atapi_toc), GFP_KERNEL);
1163 printk(KERN_ERR PFX "%s: No cdrom TOC buffer!\n",
1171 * Check to see if the existing data is still valid. If it is,
1174 (void) cdrom_check_status(drive, sense);
1176 if (drive->atapi_flags & IDE_AFLAG_TOC_VALID)
1179 /* try to get the total cdrom capacity and sector size */
1180 stat = cdrom_read_capacity(drive, &toc->capacity, §ors_per_frame,
1183 toc->capacity = 0x1fffff;
1185 set_capacity(info->disk, toc->capacity * sectors_per_frame);
1186 /* save a private copy of the TOC capacity for error handling */
1187 drive->probed_capacity = toc->capacity * sectors_per_frame;
1189 blk_queue_hardsect_size(drive->queue,
1190 sectors_per_frame << SECTOR_BITS);
1192 /* first read just the header, so we know how long the TOC is */
1193 stat = cdrom_read_tocentry(drive, 0, 1, 0, (char *) &toc->hdr,
1194 sizeof(struct atapi_toc_header), sense);
1198 if (drive->atapi_flags & IDE_AFLAG_TOCTRACKS_AS_BCD) {
1199 toc->hdr.first_track = bcd2bin(toc->hdr.first_track);
1200 toc->hdr.last_track = bcd2bin(toc->hdr.last_track);
1203 ntracks = toc->hdr.last_track - toc->hdr.first_track + 1;
1206 if (ntracks > MAX_TRACKS)
1207 ntracks = MAX_TRACKS;
1209 /* now read the whole schmeer */
1210 stat = cdrom_read_tocentry(drive, toc->hdr.first_track, 1, 0,
1212 sizeof(struct atapi_toc_header) +
1214 sizeof(struct atapi_toc_entry), sense);
1216 if (stat && toc->hdr.first_track > 1) {
1218 * Cds with CDI tracks only don't have any TOC entries, despite
1219 * of this the returned values are
1220 * first_track == last_track = number of CDI tracks + 1,
1221 * so that this case is indistinguishable from the same layout
1222 * plus an additional audio track. If we get an error for the
1223 * regular case, we assume a CDI without additional audio
1224 * tracks. In this case the readable TOC is empty (CDI tracks
1225 * are not included) and only holds the Leadout entry.
1230 stat = cdrom_read_tocentry(drive, CDROM_LEADOUT, 1, 0,
1232 sizeof(struct atapi_toc_header) +
1234 sizeof(struct atapi_toc_entry),
1239 if (drive->atapi_flags & IDE_AFLAG_TOCTRACKS_AS_BCD) {
1240 toc->hdr.first_track = (u8)bin2bcd(CDROM_LEADOUT);
1241 toc->hdr.last_track = (u8)bin2bcd(CDROM_LEADOUT);
1243 toc->hdr.first_track = CDROM_LEADOUT;
1244 toc->hdr.last_track = CDROM_LEADOUT;
1251 toc->hdr.toc_length = be16_to_cpu(toc->hdr.toc_length);
1253 if (drive->atapi_flags & IDE_AFLAG_TOCTRACKS_AS_BCD) {
1254 toc->hdr.first_track = bcd2bin(toc->hdr.first_track);
1255 toc->hdr.last_track = bcd2bin(toc->hdr.last_track);
1258 for (i = 0; i <= ntracks; i++) {
1259 if (drive->atapi_flags & IDE_AFLAG_TOCADDR_AS_BCD) {
1260 if (drive->atapi_flags & IDE_AFLAG_TOCTRACKS_AS_BCD)
1261 toc->ent[i].track = bcd2bin(toc->ent[i].track);
1262 msf_from_bcd(&toc->ent[i].addr.msf);
1264 toc->ent[i].addr.lba = msf_to_lba(toc->ent[i].addr.msf.minute,
1265 toc->ent[i].addr.msf.second,
1266 toc->ent[i].addr.msf.frame);
1269 if (toc->hdr.first_track != CDROM_LEADOUT) {
1270 /* read the multisession information */
1271 stat = cdrom_read_tocentry(drive, 0, 0, 1, (char *)&ms_tmp,
1272 sizeof(ms_tmp), sense);
1276 toc->last_session_lba = be32_to_cpu(ms_tmp.ent.addr.lba);
1278 ms_tmp.hdr.last_track = CDROM_LEADOUT;
1279 ms_tmp.hdr.first_track = ms_tmp.hdr.last_track;
1280 toc->last_session_lba = msf_to_lba(0, 2, 0); /* 0m 2s 0f */
1283 if (drive->atapi_flags & IDE_AFLAG_TOCADDR_AS_BCD) {
1284 /* re-read multisession information using MSF format */
1285 stat = cdrom_read_tocentry(drive, 0, 1, 1, (char *)&ms_tmp,
1286 sizeof(ms_tmp), sense);
1290 msf_from_bcd(&ms_tmp.ent.addr.msf);
1291 toc->last_session_lba = msf_to_lba(ms_tmp.ent.addr.msf.minute,
1292 ms_tmp.ent.addr.msf.second,
1293 ms_tmp.ent.addr.msf.frame);
1296 toc->xa_flag = (ms_tmp.hdr.first_track != ms_tmp.hdr.last_track);
1298 /* now try to get the total cdrom capacity */
1299 stat = cdrom_get_last_written(cdi, &last_written);
1300 if (!stat && (last_written > toc->capacity)) {
1301 toc->capacity = last_written;
1302 set_capacity(info->disk, toc->capacity * sectors_per_frame);
1303 drive->probed_capacity = toc->capacity * sectors_per_frame;
1306 /* Remember that we've read this stuff. */
1307 drive->atapi_flags |= IDE_AFLAG_TOC_VALID;
1312 int ide_cdrom_get_capabilities(ide_drive_t *drive, u8 *buf)
1314 struct cdrom_info *info = drive->driver_data;
1315 struct cdrom_device_info *cdi = &info->devinfo;
1316 struct packet_command cgc;
1317 int stat, attempts = 3, size = ATAPI_CAPABILITIES_PAGE_SIZE;
1319 ide_debug_log(IDE_DBG_FUNC, "enter");
1321 if ((drive->atapi_flags & IDE_AFLAG_FULL_CAPS_PAGE) == 0)
1322 size -= ATAPI_CAPABILITIES_PAGE_PAD_SIZE;
1324 init_cdrom_command(&cgc, buf, size, CGC_DATA_UNKNOWN);
1326 /* we seem to get stat=0x01,err=0x00 the first time (??) */
1327 stat = cdrom_mode_sense(cdi, &cgc, GPMODE_CAPABILITIES_PAGE, 0);
1330 } while (--attempts);
1334 void ide_cdrom_update_speed(ide_drive_t *drive, u8 *buf)
1336 struct cdrom_info *cd = drive->driver_data;
1337 u16 curspeed, maxspeed;
1339 ide_debug_log(IDE_DBG_FUNC, "enter");
1341 if (drive->atapi_flags & IDE_AFLAG_LE_SPEED_FIELDS) {
1342 curspeed = le16_to_cpup((__le16 *)&buf[8 + 14]);
1343 maxspeed = le16_to_cpup((__le16 *)&buf[8 + 8]);
1345 curspeed = be16_to_cpup((__be16 *)&buf[8 + 14]);
1346 maxspeed = be16_to_cpup((__be16 *)&buf[8 + 8]);
1349 ide_debug_log(IDE_DBG_PROBE, "curspeed: %u, maxspeed: %u",
1350 curspeed, maxspeed);
1352 cd->current_speed = (curspeed + (176/2)) / 176;
1353 cd->max_speed = (maxspeed + (176/2)) / 176;
1356 #define IDE_CD_CAPABILITIES \
1357 (CDC_CLOSE_TRAY | CDC_OPEN_TRAY | CDC_LOCK | CDC_SELECT_SPEED | \
1358 CDC_SELECT_DISC | CDC_MULTI_SESSION | CDC_MCN | CDC_MEDIA_CHANGED | \
1359 CDC_PLAY_AUDIO | CDC_RESET | CDC_DRIVE_STATUS | CDC_CD_R | \
1360 CDC_CD_RW | CDC_DVD | CDC_DVD_R | CDC_DVD_RAM | CDC_GENERIC_PACKET | \
1361 CDC_MO_DRIVE | CDC_MRW | CDC_MRW_W | CDC_RAM)
1363 static struct cdrom_device_ops ide_cdrom_dops = {
1364 .open = ide_cdrom_open_real,
1365 .release = ide_cdrom_release_real,
1366 .drive_status = ide_cdrom_drive_status,
1367 .media_changed = ide_cdrom_check_media_change_real,
1368 .tray_move = ide_cdrom_tray_move,
1369 .lock_door = ide_cdrom_lock_door,
1370 .select_speed = ide_cdrom_select_speed,
1371 .get_last_session = ide_cdrom_get_last_session,
1372 .get_mcn = ide_cdrom_get_mcn,
1373 .reset = ide_cdrom_reset,
1374 .audio_ioctl = ide_cdrom_audio_ioctl,
1375 .capability = IDE_CD_CAPABILITIES,
1376 .generic_packet = ide_cdrom_packet,
1379 static int ide_cdrom_register(ide_drive_t *drive, int nslots)
1381 struct cdrom_info *info = drive->driver_data;
1382 struct cdrom_device_info *devinfo = &info->devinfo;
1384 ide_debug_log(IDE_DBG_PROBE, "nslots: %d", nslots);
1386 devinfo->ops = &ide_cdrom_dops;
1387 devinfo->speed = info->current_speed;
1388 devinfo->capacity = nslots;
1389 devinfo->handle = drive;
1390 strcpy(devinfo->name, drive->name);
1392 if (drive->atapi_flags & IDE_AFLAG_NO_SPEED_SELECT)
1393 devinfo->mask |= CDC_SELECT_SPEED;
1395 devinfo->disk = info->disk;
1396 return register_cdrom(devinfo);
1399 static int ide_cdrom_probe_capabilities(ide_drive_t *drive)
1401 struct cdrom_info *cd = drive->driver_data;
1402 struct cdrom_device_info *cdi = &cd->devinfo;
1403 u8 buf[ATAPI_CAPABILITIES_PAGE_SIZE];
1404 mechtype_t mechtype;
1407 ide_debug_log(IDE_DBG_PROBE, "media: 0x%x, atapi_flags: 0x%lx",
1408 drive->media, drive->atapi_flags);
1410 cdi->mask = (CDC_CD_R | CDC_CD_RW | CDC_DVD | CDC_DVD_R |
1411 CDC_DVD_RAM | CDC_SELECT_DISC | CDC_PLAY_AUDIO |
1412 CDC_MO_DRIVE | CDC_RAM);
1414 if (drive->media == ide_optical) {
1415 cdi->mask &= ~(CDC_MO_DRIVE | CDC_RAM);
1416 printk(KERN_ERR PFX "%s: ATAPI magneto-optical drive\n",
1421 if (drive->atapi_flags & IDE_AFLAG_PRE_ATAPI12) {
1422 drive->atapi_flags &= ~IDE_AFLAG_NO_EJECT;
1423 cdi->mask &= ~CDC_PLAY_AUDIO;
1428 * We have to cheat a little here. the packet will eventually be queued
1429 * with ide_cdrom_packet(), which extracts the drive from cdi->handle.
1430 * Since this device hasn't been registered with the Uniform layer yet,
1431 * it can't do this. Same goes for cdi->ops.
1433 cdi->handle = drive;
1434 cdi->ops = &ide_cdrom_dops;
1436 if (ide_cdrom_get_capabilities(drive, buf))
1439 if ((buf[8 + 6] & 0x01) == 0)
1440 drive->dev_flags &= ~IDE_DFLAG_DOORLOCKING;
1441 if (buf[8 + 6] & 0x08)
1442 drive->atapi_flags &= ~IDE_AFLAG_NO_EJECT;
1443 if (buf[8 + 3] & 0x01)
1444 cdi->mask &= ~CDC_CD_R;
1445 if (buf[8 + 3] & 0x02)
1446 cdi->mask &= ~(CDC_CD_RW | CDC_RAM);
1447 if (buf[8 + 2] & 0x38)
1448 cdi->mask &= ~CDC_DVD;
1449 if (buf[8 + 3] & 0x20)
1450 cdi->mask &= ~(CDC_DVD_RAM | CDC_RAM);
1451 if (buf[8 + 3] & 0x10)
1452 cdi->mask &= ~CDC_DVD_R;
1453 if ((buf[8 + 4] & 0x01) || (drive->atapi_flags & IDE_AFLAG_PLAY_AUDIO_OK))
1454 cdi->mask &= ~CDC_PLAY_AUDIO;
1456 mechtype = buf[8 + 6] >> 5;
1457 if (mechtype == mechtype_caddy ||
1458 mechtype == mechtype_popup ||
1459 (drive->atapi_flags & IDE_AFLAG_NO_AUTOCLOSE))
1460 cdi->mask |= CDC_CLOSE_TRAY;
1462 if (cdi->sanyo_slot > 0) {
1463 cdi->mask &= ~CDC_SELECT_DISC;
1465 } else if (mechtype == mechtype_individual_changer ||
1466 mechtype == mechtype_cartridge_changer) {
1467 nslots = cdrom_number_of_slots(cdi);
1469 cdi->mask &= ~CDC_SELECT_DISC;
1472 ide_cdrom_update_speed(drive, buf);
1474 printk(KERN_INFO PFX "%s: ATAPI", drive->name);
1476 /* don't print speed if the drive reported 0 */
1478 printk(KERN_CONT " %dX", cd->max_speed);
1480 printk(KERN_CONT " %s", (cdi->mask & CDC_DVD) ? "CD-ROM" : "DVD-ROM");
1482 if ((cdi->mask & CDC_DVD_R) == 0 || (cdi->mask & CDC_DVD_RAM) == 0)
1483 printk(KERN_CONT " DVD%s%s",
1484 (cdi->mask & CDC_DVD_R) ? "" : "-R",
1485 (cdi->mask & CDC_DVD_RAM) ? "" : "/RAM");
1487 if ((cdi->mask & CDC_CD_R) == 0 || (cdi->mask & CDC_CD_RW) == 0)
1488 printk(KERN_CONT " CD%s%s",
1489 (cdi->mask & CDC_CD_R) ? "" : "-R",
1490 (cdi->mask & CDC_CD_RW) ? "" : "/RW");
1492 if ((cdi->mask & CDC_SELECT_DISC) == 0)
1493 printk(KERN_CONT " changer w/%d slots", nslots);
1495 printk(KERN_CONT " drive");
1497 printk(KERN_CONT ", %dkB Cache\n",
1498 be16_to_cpup((__be16 *)&buf[8 + 12]));
1503 /* standard prep_rq_fn that builds 10 byte cmds */
1504 static int ide_cdrom_prep_fs(struct request_queue *q, struct request *rq)
1506 int hard_sect = queue_hardsect_size(q);
1507 long block = (long)rq->hard_sector / (hard_sect >> 9);
1508 unsigned long blocks = rq->hard_nr_sectors / (hard_sect >> 9);
1510 memset(rq->cmd, 0, BLK_MAX_CDB);
1512 if (rq_data_dir(rq) == READ)
1513 rq->cmd[0] = GPCMD_READ_10;
1515 rq->cmd[0] = GPCMD_WRITE_10;
1520 rq->cmd[2] = (block >> 24) & 0xff;
1521 rq->cmd[3] = (block >> 16) & 0xff;
1522 rq->cmd[4] = (block >> 8) & 0xff;
1523 rq->cmd[5] = block & 0xff;
1526 * and transfer length
1528 rq->cmd[7] = (blocks >> 8) & 0xff;
1529 rq->cmd[8] = blocks & 0xff;
1535 * Most of the SCSI commands are supported directly by ATAPI devices.
1536 * This transform handles the few exceptions.
1538 static int ide_cdrom_prep_pc(struct request *rq)
1542 /* transform 6-byte read/write commands to the 10-byte version */
1543 if (c[0] == READ_6 || c[0] == WRITE_6) {
1550 c[0] += (READ_10 - READ_6);
1556 * it's silly to pretend we understand 6-byte sense commands, just
1557 * reject with ILLEGAL_REQUEST and the caller should take the
1558 * appropriate action
1560 if (c[0] == MODE_SENSE || c[0] == MODE_SELECT) {
1561 rq->errors = ILLEGAL_REQUEST;
1562 return BLKPREP_KILL;
1568 static int ide_cdrom_prep_fn(struct request_queue *q, struct request *rq)
1570 if (blk_fs_request(rq))
1571 return ide_cdrom_prep_fs(q, rq);
1572 else if (blk_pc_request(rq))
1573 return ide_cdrom_prep_pc(rq);
1578 struct cd_list_entry {
1579 const char *id_model;
1580 const char *id_firmware;
1581 unsigned int cd_flags;
1584 #ifdef CONFIG_IDE_PROC_FS
1585 static sector_t ide_cdrom_capacity(ide_drive_t *drive)
1587 unsigned long capacity, sectors_per_frame;
1589 if (cdrom_read_capacity(drive, &capacity, §ors_per_frame, NULL))
1592 return capacity * sectors_per_frame;
1595 static int proc_idecd_read_capacity(char *page, char **start, off_t off,
1596 int count, int *eof, void *data)
1598 ide_drive_t *drive = data;
1601 len = sprintf(page, "%llu\n", (long long)ide_cdrom_capacity(drive));
1602 PROC_IDE_READ_RETURN(page, start, off, count, eof, len);
1605 static ide_proc_entry_t idecd_proc[] = {
1606 { "capacity", S_IFREG|S_IRUGO, proc_idecd_read_capacity, NULL },
1607 { NULL, 0, NULL, NULL }
1610 static ide_proc_entry_t *ide_cd_proc_entries(ide_drive_t *drive)
1615 static const struct ide_proc_devset *ide_cd_proc_devsets(ide_drive_t *drive)
1621 static const struct cd_list_entry ide_cd_quirks_list[] = {
1622 /* Limit transfer size per interrupt. */
1623 { "SAMSUNG CD-ROM SCR-2430", NULL, IDE_AFLAG_LIMIT_NFRAMES },
1624 { "SAMSUNG CD-ROM SCR-2432", NULL, IDE_AFLAG_LIMIT_NFRAMES },
1625 /* SCR-3231 doesn't support the SET_CD_SPEED command. */
1626 { "SAMSUNG CD-ROM SCR-3231", NULL, IDE_AFLAG_NO_SPEED_SELECT },
1627 /* Old NEC260 (not R) was released before ATAPI 1.2 spec. */
1628 { "NEC CD-ROM DRIVE:260", "1.01", IDE_AFLAG_TOCADDR_AS_BCD |
1629 IDE_AFLAG_PRE_ATAPI12, },
1630 /* Vertos 300, some versions of this drive like to talk BCD. */
1631 { "V003S0DS", NULL, IDE_AFLAG_VERTOS_300_SSD, },
1632 /* Vertos 600 ESD. */
1633 { "V006E0DS", NULL, IDE_AFLAG_VERTOS_600_ESD, },
1635 * Sanyo 3 CD changer uses a non-standard command for CD changing
1636 * (by default standard ATAPI support for CD changers is used).
1638 { "CD-ROM CDR-C3 G", NULL, IDE_AFLAG_SANYO_3CD },
1639 { "CD-ROM CDR-C3G", NULL, IDE_AFLAG_SANYO_3CD },
1640 { "CD-ROM CDR_C36", NULL, IDE_AFLAG_SANYO_3CD },
1641 /* Stingray 8X CD-ROM. */
1642 { "STINGRAY 8422 IDE 8X CD-ROM 7-27-95", NULL, IDE_AFLAG_PRE_ATAPI12 },
1644 * ACER 50X CD-ROM and WPI 32X CD-ROM require the full spec length
1645 * mode sense page capabilities size, but older drives break.
1647 { "ATAPI CD ROM DRIVE 50X MAX", NULL, IDE_AFLAG_FULL_CAPS_PAGE },
1648 { "WPI CDS-32X", NULL, IDE_AFLAG_FULL_CAPS_PAGE },
1649 /* ACER/AOpen 24X CD-ROM has the speed fields byte-swapped. */
1650 { "", "241N", IDE_AFLAG_LE_SPEED_FIELDS },
1652 * Some drives used by Apple don't advertise audio play
1653 * but they do support reading TOC & audio datas.
1655 { "MATSHITADVD-ROM SR-8187", NULL, IDE_AFLAG_PLAY_AUDIO_OK },
1656 { "MATSHITADVD-ROM SR-8186", NULL, IDE_AFLAG_PLAY_AUDIO_OK },
1657 { "MATSHITADVD-ROM SR-8176", NULL, IDE_AFLAG_PLAY_AUDIO_OK },
1658 { "MATSHITADVD-ROM SR-8174", NULL, IDE_AFLAG_PLAY_AUDIO_OK },
1659 { "Optiarc DVD RW AD-5200A", NULL, IDE_AFLAG_PLAY_AUDIO_OK },
1660 { "Optiarc DVD RW AD-7200A", NULL, IDE_AFLAG_PLAY_AUDIO_OK },
1661 { "Optiarc DVD RW AD-7543A", NULL, IDE_AFLAG_NO_AUTOCLOSE },
1662 { "TEAC CD-ROM CD-224E", NULL, IDE_AFLAG_NO_AUTOCLOSE },
1666 static unsigned int ide_cd_flags(u16 *id)
1668 const struct cd_list_entry *cle = ide_cd_quirks_list;
1670 while (cle->id_model) {
1671 if (strcmp(cle->id_model, (char *)&id[ATA_ID_PROD]) == 0 &&
1672 (cle->id_firmware == NULL ||
1673 strstr((char *)&id[ATA_ID_FW_REV], cle->id_firmware)))
1674 return cle->cd_flags;
1681 static int ide_cdrom_setup(ide_drive_t *drive)
1683 struct cdrom_info *cd = drive->driver_data;
1684 struct cdrom_device_info *cdi = &cd->devinfo;
1685 u16 *id = drive->id;
1686 char *fw_rev = (char *)&id[ATA_ID_FW_REV];
1689 ide_debug_log(IDE_DBG_PROBE, "enter");
1691 blk_queue_prep_rq(drive->queue, ide_cdrom_prep_fn);
1692 blk_queue_dma_alignment(drive->queue, 31);
1693 blk_queue_update_dma_pad(drive->queue, 15);
1694 drive->queue->unplug_delay = (1 * HZ) / 1000;
1695 if (!drive->queue->unplug_delay)
1696 drive->queue->unplug_delay = 1;
1698 drive->dev_flags |= IDE_DFLAG_MEDIA_CHANGED;
1699 drive->atapi_flags = IDE_AFLAG_NO_EJECT | ide_cd_flags(id);
1701 if ((drive->atapi_flags & IDE_AFLAG_VERTOS_300_SSD) &&
1702 fw_rev[4] == '1' && fw_rev[6] <= '2')
1703 drive->atapi_flags |= (IDE_AFLAG_TOCTRACKS_AS_BCD |
1704 IDE_AFLAG_TOCADDR_AS_BCD);
1705 else if ((drive->atapi_flags & IDE_AFLAG_VERTOS_600_ESD) &&
1706 fw_rev[4] == '1' && fw_rev[6] <= '2')
1707 drive->atapi_flags |= IDE_AFLAG_TOCTRACKS_AS_BCD;
1708 else if (drive->atapi_flags & IDE_AFLAG_SANYO_3CD)
1709 /* 3 => use CD in slot 0 */
1710 cdi->sanyo_slot = 3;
1712 nslots = ide_cdrom_probe_capabilities(drive);
1714 /* set correct block size */
1715 blk_queue_hardsect_size(drive->queue, CD_FRAMESIZE);
1717 if (ide_cdrom_register(drive, nslots)) {
1718 printk(KERN_ERR PFX "%s: %s failed to register device with the"
1719 " cdrom driver.\n", drive->name, __func__);
1720 cd->devinfo.handle = NULL;
1724 ide_proc_register_driver(drive, cd->driver);
1728 static void ide_cd_remove(ide_drive_t *drive)
1730 struct cdrom_info *info = drive->driver_data;
1732 ide_debug_log(IDE_DBG_FUNC, "enter");
1734 ide_proc_unregister_driver(drive, info->driver);
1735 device_del(&info->dev);
1736 del_gendisk(info->disk);
1738 mutex_lock(&idecd_ref_mutex);
1739 put_device(&info->dev);
1740 mutex_unlock(&idecd_ref_mutex);
1743 static void ide_cd_release(struct device *dev)
1745 struct cdrom_info *info = to_ide_drv(dev, cdrom_info);
1746 struct cdrom_device_info *devinfo = &info->devinfo;
1747 ide_drive_t *drive = info->drive;
1748 struct gendisk *g = info->disk;
1750 ide_debug_log(IDE_DBG_FUNC, "enter");
1753 if (devinfo->handle == drive)
1754 unregister_cdrom(devinfo);
1755 drive->driver_data = NULL;
1756 blk_queue_prep_rq(drive->queue, NULL);
1757 g->private_data = NULL;
1762 static int ide_cd_probe(ide_drive_t *);
1764 static struct ide_driver ide_cdrom_driver = {
1766 .owner = THIS_MODULE,
1767 .name = "ide-cdrom",
1768 .bus = &ide_bus_type,
1770 .probe = ide_cd_probe,
1771 .remove = ide_cd_remove,
1772 .version = IDECD_VERSION,
1773 .do_request = ide_cd_do_request,
1774 #ifdef CONFIG_IDE_PROC_FS
1775 .proc_entries = ide_cd_proc_entries,
1776 .proc_devsets = ide_cd_proc_devsets,
1780 static int idecd_open(struct block_device *bdev, fmode_t mode)
1782 struct cdrom_info *info = ide_cd_get(bdev->bd_disk);
1788 rc = cdrom_open(&info->devinfo, bdev, mode);
1796 static int idecd_release(struct gendisk *disk, fmode_t mode)
1798 struct cdrom_info *info = ide_drv_g(disk, cdrom_info);
1800 cdrom_release(&info->devinfo, mode);
1807 static int idecd_set_spindown(struct cdrom_device_info *cdi, unsigned long arg)
1809 struct packet_command cgc;
1814 if (copy_from_user(&spindown, (void __user *)arg, sizeof(char)))
1817 init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_UNKNOWN);
1819 stat = cdrom_mode_sense(cdi, &cgc, GPMODE_CDROM_PAGE, 0);
1823 buffer[11] = (buffer[11] & 0xf0) | (spindown & 0x0f);
1824 return cdrom_mode_select(cdi, &cgc);
1827 static int idecd_get_spindown(struct cdrom_device_info *cdi, unsigned long arg)
1829 struct packet_command cgc;
1834 init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_UNKNOWN);
1836 stat = cdrom_mode_sense(cdi, &cgc, GPMODE_CDROM_PAGE, 0);
1840 spindown = buffer[11] & 0x0f;
1841 if (copy_to_user((void __user *)arg, &spindown, sizeof(char)))
1846 static int idecd_ioctl(struct block_device *bdev, fmode_t mode,
1847 unsigned int cmd, unsigned long arg)
1849 struct cdrom_info *info = ide_drv_g(bdev->bd_disk, cdrom_info);
1853 case CDROMSETSPINDOWN:
1854 return idecd_set_spindown(&info->devinfo, arg);
1855 case CDROMGETSPINDOWN:
1856 return idecd_get_spindown(&info->devinfo, arg);
1861 err = generic_ide_ioctl(info->drive, bdev, cmd, arg);
1863 err = cdrom_ioctl(&info->devinfo, bdev, mode, cmd, arg);
1868 static int idecd_media_changed(struct gendisk *disk)
1870 struct cdrom_info *info = ide_drv_g(disk, cdrom_info);
1871 return cdrom_media_changed(&info->devinfo);
1874 static int idecd_revalidate_disk(struct gendisk *disk)
1876 struct cdrom_info *info = ide_drv_g(disk, cdrom_info);
1877 struct request_sense sense;
1879 ide_cd_read_toc(info->drive, &sense);
1884 static struct block_device_operations idecd_ops = {
1885 .owner = THIS_MODULE,
1887 .release = idecd_release,
1888 .locked_ioctl = idecd_ioctl,
1889 .media_changed = idecd_media_changed,
1890 .revalidate_disk = idecd_revalidate_disk
1893 /* module options */
1894 static unsigned long debug_mask;
1895 module_param(debug_mask, ulong, 0644);
1897 MODULE_DESCRIPTION("ATAPI CD-ROM Driver");
1899 static int ide_cd_probe(ide_drive_t *drive)
1901 struct cdrom_info *info;
1903 struct request_sense sense;
1905 ide_debug_log(IDE_DBG_PROBE, "driver_req: %s, media: 0x%x",
1906 drive->driver_req, drive->media);
1908 if (!strstr("ide-cdrom", drive->driver_req))
1911 if (drive->media != ide_cdrom && drive->media != ide_optical)
1914 drive->debug_mask = debug_mask;
1915 drive->irq_handler = cdrom_newpc_intr;
1917 info = kzalloc(sizeof(struct cdrom_info), GFP_KERNEL);
1919 printk(KERN_ERR PFX "%s: Can't allocate a cdrom structure\n",
1924 g = alloc_disk(1 << PARTN_BITS);
1928 ide_init_disk(g, drive);
1930 info->dev.parent = &drive->gendev;
1931 info->dev.release = ide_cd_release;
1932 dev_set_name(&info->dev, dev_name(&drive->gendev));
1934 if (device_register(&info->dev))
1937 info->drive = drive;
1938 info->driver = &ide_cdrom_driver;
1941 g->private_data = &info->driver;
1943 drive->driver_data = info;
1946 g->driverfs_dev = &drive->gendev;
1947 g->flags = GENHD_FL_CD | GENHD_FL_REMOVABLE;
1948 if (ide_cdrom_setup(drive)) {
1949 put_device(&info->dev);
1953 ide_cd_read_toc(drive, &sense);
1954 g->fops = &idecd_ops;
1955 g->flags |= GENHD_FL_REMOVABLE;
1967 static void __exit ide_cdrom_exit(void)
1969 driver_unregister(&ide_cdrom_driver.gen_driver);
1972 static int __init ide_cdrom_init(void)
1974 printk(KERN_INFO DRV_NAME " driver " IDECD_VERSION "\n");
1975 return driver_register(&ide_cdrom_driver.gen_driver);
1978 MODULE_ALIAS("ide:*m-cdrom*");
1979 MODULE_ALIAS("ide-cd");
1980 module_init(ide_cdrom_init);
1981 module_exit(ide_cdrom_exit);
1982 MODULE_LICENSE("GPL");