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, 2007-2009 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/sched/task_stack.h>
32 #include <linux/delay.h>
33 #include <linux/timer.h>
34 #include <linux/seq_file.h>
35 #include <linux/slab.h>
36 #include <linux/interrupt.h>
37 #include <linux/errno.h>
38 #include <linux/cdrom.h>
39 #include <linux/ide.h>
40 #include <linux/completion.h>
41 #include <linux/mutex.h>
42 #include <linux/bcd.h>
44 /* For SCSI -> ATAPI command conversion */
45 #include <scsi/scsi.h>
48 #include <asm/byteorder.h>
49 #include <linux/uaccess.h>
50 #include <asm/unaligned.h>
54 static DEFINE_MUTEX(ide_cd_mutex);
55 static DEFINE_MUTEX(idecd_ref_mutex);
57 static void ide_cd_release(struct device *);
59 static struct cdrom_info *ide_cd_get(struct gendisk *disk)
61 struct cdrom_info *cd = NULL;
63 mutex_lock(&idecd_ref_mutex);
64 cd = ide_drv_g(disk, cdrom_info);
66 if (ide_device_get(cd->drive))
72 mutex_unlock(&idecd_ref_mutex);
76 static void ide_cd_put(struct cdrom_info *cd)
78 ide_drive_t *drive = cd->drive;
80 mutex_lock(&idecd_ref_mutex);
82 ide_device_put(drive);
83 mutex_unlock(&idecd_ref_mutex);
87 * Generic packet command support and error handling routines.
90 /* Mark that we've seen a media change and invalidate our internal buffers. */
91 static void cdrom_saw_media_change(ide_drive_t *drive)
93 drive->dev_flags |= IDE_DFLAG_MEDIA_CHANGED;
94 drive->atapi_flags &= ~IDE_AFLAG_TOC_VALID;
97 static int cdrom_log_sense(ide_drive_t *drive, struct request *rq)
99 struct request_sense *sense = &drive->sense_data;
102 if (!sense || !rq || (rq->rq_flags & RQF_QUIET))
105 ide_debug_log(IDE_DBG_SENSE, "sense_key: 0x%x", sense->sense_key);
107 switch (sense->sense_key) {
109 case RECOVERED_ERROR:
113 * don't care about tray state messages for e.g. capacity
114 * commands or in-progress or becoming ready
116 if (sense->asc == 0x3a || sense->asc == 0x04)
120 case ILLEGAL_REQUEST:
122 * don't log START_STOP unit with LoEj set, since we cannot
123 * reliably check if drive can auto-close
125 if (scsi_req(rq)->cmd[0] == GPCMD_START_STOP_UNIT && sense->asc == 0x24)
131 * Make good and sure we've seen this potential media change.
132 * Some drives (i.e. Creative) fail to present the correct sense
133 * key in the error register.
135 cdrom_saw_media_change(drive);
144 static void cdrom_analyze_sense_data(ide_drive_t *drive,
145 struct request *failed_command)
147 struct request_sense *sense = &drive->sense_data;
148 struct cdrom_info *info = drive->driver_data;
149 unsigned long sector;
150 unsigned long bio_sectors;
152 ide_debug_log(IDE_DBG_SENSE, "error_code: 0x%x, sense_key: 0x%x",
153 sense->error_code, sense->sense_key);
156 ide_debug_log(IDE_DBG_SENSE, "failed cmd: 0x%x",
157 failed_command->cmd[0]);
159 if (!cdrom_log_sense(drive, failed_command))
163 * If a read toc is executed for a CD-R or CD-RW medium where the first
164 * toc has not been recorded yet, it will fail with 05/24/00 (which is a
167 if (failed_command && scsi_req(failed_command)->cmd[0] == GPCMD_READ_TOC_PMA_ATIP)
168 if (sense->sense_key == 0x05 && sense->asc == 0x24)
172 if (sense->error_code == 0x70) {
173 switch (sense->sense_key) {
175 case VOLUME_OVERFLOW:
176 case ILLEGAL_REQUEST:
179 if (failed_command == NULL ||
180 blk_rq_is_passthrough(failed_command))
182 sector = (sense->information[0] << 24) |
183 (sense->information[1] << 16) |
184 (sense->information[2] << 8) |
185 (sense->information[3]);
187 if (queue_logical_block_size(drive->queue) == 2048)
188 /* device sector size is 2K */
191 bio_sectors = max(bio_sectors(failed_command->bio), 4U);
192 sector &= ~(bio_sectors - 1);
195 * The SCSI specification allows for the value
196 * returned by READ CAPACITY to be up to 75 2K
197 * sectors past the last readable block.
198 * Therefore, if we hit a medium error within the
199 * last 75 2K sectors, we decrease the saved size
202 if (sector < get_capacity(info->disk) &&
203 drive->probed_capacity - sector < 4 * 75)
204 set_capacity(info->disk, sector);
208 ide_cd_log_error(drive->name, failed_command, sense);
211 static void ide_cd_complete_failed_rq(ide_drive_t *drive, struct request *rq)
214 * For ATA_PRIV_SENSE, "rq->special" points to the original
215 * failed request. Also, the sense data should be read
216 * directly from rq which might be different from the original
217 * sense buffer if it got copied during mapping.
219 struct request *failed = (struct request *)rq->special;
220 void *sense = bio_data(rq->bio);
224 * Sense is always read into drive->sense_data, copy back to the
227 memcpy(scsi_req(failed)->sense, sense, 18);
228 scsi_req(failed)->sense_len = scsi_req(rq)->sense_len;
229 cdrom_analyze_sense_data(drive, failed);
231 if (ide_end_rq(drive, failed, -EIO, blk_rq_bytes(failed)))
234 cdrom_analyze_sense_data(drive, NULL);
239 * Allow the drive 5 seconds to recover; some devices will return NOT_READY
240 * while flushing data from cache.
242 * returns: 0 failed (write timeout expired)
245 static int ide_cd_breathe(ide_drive_t *drive, struct request *rq)
248 struct cdrom_info *info = drive->driver_data;
250 if (!scsi_req(rq)->result)
251 info->write_timeout = jiffies + ATAPI_WAIT_WRITE_BUSY;
253 scsi_req(rq)->result = 1;
255 if (time_after(jiffies, info->write_timeout))
261 blk_delay_queue(drive->queue, 1);
268 * 0: if the request should be continued.
269 * 1: if the request will be going through error recovery.
270 * 2: if the request should be ended.
272 static int cdrom_decode_status(ide_drive_t *drive, u8 stat)
274 ide_hwif_t *hwif = drive->hwif;
275 struct request *rq = hwif->rq;
276 int err, sense_key, do_end_request = 0;
278 /* get the IDE error register */
279 err = ide_read_error(drive);
280 sense_key = err >> 4;
282 ide_debug_log(IDE_DBG_RQ, "cmd: 0x%x, rq->cmd_type: 0x%x, err: 0x%x, "
284 rq->cmd[0], rq->cmd_type, err, stat);
286 if (ata_sense_request(rq)) {
288 * We got an error trying to get sense info from the drive
289 * (probably while trying to recover from a former error).
292 rq->rq_flags |= RQF_FAILED;
296 /* if we have an error, pass CHECK_CONDITION as the SCSI status byte */
297 if (blk_rq_is_scsi(rq) && !scsi_req(rq)->result)
298 scsi_req(rq)->result = SAM_STAT_CHECK_CONDITION;
300 if (blk_noretry_request(rq))
305 if (req_op(rq) == REQ_OP_WRITE) {
306 if (ide_cd_breathe(drive, rq))
309 cdrom_saw_media_change(drive);
311 if (!blk_rq_is_passthrough(rq) &&
312 !(rq->rq_flags & RQF_QUIET))
313 printk(KERN_ERR PFX "%s: tray open\n",
319 cdrom_saw_media_change(drive);
321 if (blk_rq_is_passthrough(rq))
325 * Arrange to retry the request but be sure to give up if we've
326 * retried too many times.
328 if (++scsi_req(rq)->result > ERROR_MAX)
331 case ILLEGAL_REQUEST:
333 * Don't print error message for this condition -- SFF8090i
334 * indicates that 5/24/00 is the correct response to a request
335 * to close the tray if the drive doesn't have that capability.
337 * cdrom_log_sense() knows this!
339 if (scsi_req(rq)->cmd[0] == GPCMD_START_STOP_UNIT)
344 * No point in retrying after an illegal request or data
347 if (!(rq->rq_flags & RQF_QUIET))
348 ide_dump_status(drive, "command error", stat);
353 * No point in re-trying a zillion times on a bad sector.
354 * If we got here the error is not correctable.
356 if (!(rq->rq_flags & RQF_QUIET))
357 ide_dump_status(drive, "media error "
358 "(bad sector)", stat);
362 /* disk appears blank? */
363 if (!(rq->rq_flags & RQF_QUIET))
364 ide_dump_status(drive, "media error (blank)",
369 if (blk_rq_is_passthrough(rq))
371 if (err & ~ATA_ABORTED) {
372 /* go to the default handler for other errors */
373 ide_error(drive, "cdrom_decode_status", stat);
375 } else if (++scsi_req(rq)->result > ERROR_MAX)
376 /* we've racked up too many retries, abort */
380 if (blk_rq_is_passthrough(rq)) {
381 rq->rq_flags |= RQF_FAILED;
386 * End a request through request sense analysis when we have sense data.
387 * We need this in order to perform end of media processing.
392 /* if we got a CHECK_CONDITION status, queue a request sense command */
394 return ide_queue_sense_rq(drive, NULL) ? 2 : 1;
398 if (stat & ATA_ERR) {
400 return ide_queue_sense_rq(drive, rq) ? 2 : 1;
405 static void ide_cd_request_sense_fixup(ide_drive_t *drive, struct ide_cmd *cmd)
407 struct request *rq = cmd->rq;
409 ide_debug_log(IDE_DBG_FUNC, "rq->cmd[0]: 0x%x", rq->cmd[0]);
412 * Some of the trailing request sense fields are optional,
413 * and some drives don't send them. Sigh.
415 if (scsi_req(rq)->cmd[0] == GPCMD_REQUEST_SENSE &&
416 cmd->nleft > 0 && cmd->nleft <= 5)
420 int ide_cd_queue_pc(ide_drive_t *drive, const unsigned char *cmd,
421 int write, void *buffer, unsigned *bufflen,
422 struct request_sense *sense, int timeout,
423 req_flags_t rq_flags)
425 struct cdrom_info *info = drive->driver_data;
429 ide_debug_log(IDE_DBG_PC, "cmd[0]: 0x%x, write: 0x%x, timeout: %d, "
431 cmd[0], write, timeout, rq_flags);
433 /* start of retry loop */
439 rq = blk_get_request(drive->queue,
440 write ? REQ_OP_DRV_OUT : REQ_OP_DRV_IN, __GFP_RECLAIM);
442 memcpy(scsi_req(rq)->cmd, cmd, BLK_MAX_CDB);
443 ide_req(rq)->type = ATA_PRIV_PC;
444 rq->rq_flags |= rq_flags;
445 rq->timeout = timeout;
447 error = blk_rq_map_kern(drive->queue, rq, buffer,
455 blk_execute_rq(drive->queue, info->disk, rq, 0);
456 error = scsi_req(rq)->result ? -EIO : 0;
459 *bufflen = scsi_req(rq)->resid_len;
461 memcpy(sense, scsi_req(rq)->sense, sizeof(*sense));
464 * FIXME: we should probably abort/retry or something in case of
467 failed = (rq->rq_flags & RQF_FAILED) != 0;
470 * The request failed. Retry if it was due to a unit
471 * attention status (usually means media was changed).
473 struct request_sense *reqbuf = scsi_req(rq)->sense;
475 if (reqbuf->sense_key == UNIT_ATTENTION)
476 cdrom_saw_media_change(drive);
477 else if (reqbuf->sense_key == NOT_READY &&
478 reqbuf->asc == 4 && reqbuf->ascq != 4) {
480 * The drive is in the process of loading
481 * a disk. Retry, but wait a little to give
482 * the drive time to complete the load.
486 /* otherwise, don't retry */
494 } while (failed && retries >= 0);
496 /* return an error if the command failed */
497 return failed ? -EIO : 0;
501 * returns true if rq has been completed
503 static bool ide_cd_error_cmd(ide_drive_t *drive, struct ide_cmd *cmd)
505 unsigned int nr_bytes = cmd->nbytes - cmd->nleft;
507 if (cmd->tf_flags & IDE_TFLAG_WRITE)
508 nr_bytes -= cmd->last_xfer_len;
511 ide_complete_rq(drive, 0, nr_bytes);
518 static ide_startstop_t cdrom_newpc_intr(ide_drive_t *drive)
520 ide_hwif_t *hwif = drive->hwif;
521 struct ide_cmd *cmd = &hwif->cmd;
522 struct request *rq = hwif->rq;
523 ide_expiry_t *expiry = NULL;
524 int dma_error = 0, dma, thislen, uptodate = 0;
525 int write = (rq_data_dir(rq) == WRITE) ? 1 : 0, rc = 0;
526 int sense = ata_sense_request(rq);
527 unsigned int timeout;
531 ide_debug_log(IDE_DBG_PC, "cmd: 0x%x, write: 0x%x", rq->cmd[0], write);
533 /* check for errors */
537 drive->waiting_for_dma = 0;
538 dma_error = hwif->dma_ops->dma_end(drive);
539 ide_dma_unmap_sg(drive, cmd);
541 printk(KERN_ERR PFX "%s: DMA %s error\n", drive->name,
542 write ? "write" : "read");
548 stat = hwif->tp_ops->read_status(hwif);
550 if (!OK_STAT(stat, 0, BAD_R_STAT)) {
551 rc = cdrom_decode_status(drive, stat);
559 /* using dma, transfer is complete now */
562 return ide_error(drive, "dma error", stat);
567 ide_read_bcount_and_ireason(drive, &len, &ireason);
569 thislen = !blk_rq_is_passthrough(rq) ? len : cmd->nleft;
573 ide_debug_log(IDE_DBG_PC, "DRQ: stat: 0x%x, thislen: %d",
576 /* If DRQ is clear, the command has completed. */
577 if ((stat & ATA_DRQ) == 0) {
578 switch (req_op(rq)) {
581 * If we're not done reading/writing, complain.
582 * Otherwise, complete the command normally.
585 if (cmd->nleft > 0) {
586 printk(KERN_ERR PFX "%s: %s: data underrun "
587 "(%u bytes)\n", drive->name, __func__,
590 rq->rq_flags |= RQF_FAILED;
596 ide_cd_request_sense_fixup(drive, cmd);
598 uptodate = cmd->nleft ? 0 : 1;
601 * suck out the remaining bytes from the drive in an
602 * attempt to complete the data xfer. (see BZ#13399)
604 if (!(stat & ATA_ERR) && !uptodate && thislen) {
605 ide_pio_bytes(drive, cmd, write, thislen);
606 uptodate = cmd->nleft ? 0 : 1;
610 rq->rq_flags |= RQF_FAILED;
613 case REQ_OP_SCSI_OUT:
618 rc = ide_check_ireason(drive, rq, len, ireason, write);
622 cmd->last_xfer_len = 0;
624 ide_debug_log(IDE_DBG_PC, "data transfer, rq->cmd_type: 0x%x, "
626 rq->cmd_type, ireason);
629 while (thislen > 0) {
630 int blen = min_t(int, thislen, cmd->nleft);
635 ide_pio_bytes(drive, cmd, write, blen);
636 cmd->last_xfer_len += blen;
641 if (sense && write == 0)
642 scsi_req(rq)->sense_len += blen;
645 /* pad, if necessary */
647 if (blk_rq_is_passthrough(rq) || write == 0)
648 ide_pad_transfer(drive, write, len);
650 printk(KERN_ERR PFX "%s: confused, missing data\n",
652 blk_dump_rq_flags(rq, "cdrom_newpc_intr");
656 switch (req_op(rq)) {
658 case REQ_OP_SCSI_OUT:
659 timeout = rq->timeout;
663 expiry = ide_cd_expiry;
666 timeout = ATAPI_WAIT_PC;
670 hwif->expiry = expiry;
671 ide_set_handler(drive, cdrom_newpc_intr, timeout);
675 if (blk_rq_is_scsi(rq) && rc == 0) {
676 scsi_req(rq)->resid_len = 0;
677 blk_end_request_all(rq, 0);
680 if (sense && uptodate)
681 ide_cd_complete_failed_rq(drive, rq);
683 if (!blk_rq_is_passthrough(rq)) {
687 if (uptodate <= 0 && scsi_req(rq)->result == 0)
688 scsi_req(rq)->result = -EIO;
691 if (uptodate == 0 && rq->bio)
692 if (ide_cd_error_cmd(drive, cmd))
695 /* make sure it's fully ended */
696 if (blk_rq_is_passthrough(rq)) {
697 scsi_req(rq)->resid_len -= cmd->nbytes - cmd->nleft;
698 if (uptodate == 0 && (cmd->tf_flags & IDE_TFLAG_WRITE))
699 scsi_req(rq)->resid_len += cmd->last_xfer_len;
702 ide_complete_rq(drive, uptodate ? 0 : -EIO, blk_rq_bytes(rq));
704 if (sense && rc == 2)
705 ide_error(drive, "request sense failure", stat);
710 static ide_startstop_t cdrom_start_rw(ide_drive_t *drive, struct request *rq)
712 struct cdrom_info *cd = drive->driver_data;
713 struct request_queue *q = drive->queue;
714 int write = rq_data_dir(rq) == WRITE;
715 unsigned short sectors_per_frame =
716 queue_logical_block_size(q) >> SECTOR_BITS;
718 ide_debug_log(IDE_DBG_RQ, "rq->cmd[0]: 0x%x, rq->cmd_flags: 0x%x, "
719 "secs_per_frame: %u",
720 rq->cmd[0], rq->cmd_flags, sectors_per_frame);
723 /* disk has become write protected */
724 if (get_disk_ro(cd->disk))
728 * We may be retrying this request after an error. Fix up any
729 * weirdness which might be present in the request packet.
731 q->prep_rq_fn(q, rq);
734 /* fs requests *must* be hardware frame aligned */
735 if ((blk_rq_sectors(rq) & (sectors_per_frame - 1)) ||
736 (blk_rq_pos(rq) & (sectors_per_frame - 1)))
739 /* use DMA, if possible */
740 drive->dma = !!(drive->dev_flags & IDE_DFLAG_USING_DMA);
743 cd->devinfo.media_written = 1;
745 rq->timeout = ATAPI_WAIT_PC;
750 static void cdrom_do_block_pc(ide_drive_t *drive, struct request *rq)
753 ide_debug_log(IDE_DBG_PC, "rq->cmd[0]: 0x%x, rq->cmd_type: 0x%x",
754 rq->cmd[0], rq->cmd_type);
756 if (blk_rq_is_scsi(rq))
757 rq->rq_flags |= RQF_QUIET;
759 rq->rq_flags &= ~RQF_FAILED;
765 struct request_queue *q = drive->queue;
766 char *buf = bio_data(rq->bio);
767 unsigned int alignment;
769 drive->dma = !!(drive->dev_flags & IDE_DFLAG_USING_DMA);
772 * check if dma is safe
774 * NOTE! The "len" and "addr" checks should possibly have
777 alignment = queue_dma_alignment(q) | q->dma_pad_mask;
778 if ((unsigned long)buf & alignment
779 || blk_rq_bytes(rq) & q->dma_pad_mask
780 || object_is_on_stack(buf))
785 static ide_startstop_t ide_cd_do_request(ide_drive_t *drive, struct request *rq,
790 unsigned int nsectors;
792 ide_debug_log(IDE_DBG_RQ, "cmd: 0x%x, block: %llu",
793 rq->cmd[0], (unsigned long long)block);
795 if (drive->debug_mask & IDE_DBG_RQ)
796 blk_dump_rq_flags(rq, "ide_cd_do_request");
798 switch (req_op(rq)) {
800 if (cdrom_start_rw(drive, rq) == ide_stopped)
804 case REQ_OP_SCSI_OUT:
807 rq->timeout = ATAPI_WAIT_PC;
808 cdrom_do_block_pc(drive, rq);
812 switch (ide_req(rq)->type) {
814 /* right now this can only be a reset... */
825 /* prepare sense request for this command */
826 ide_prep_sense(drive, rq);
828 memset(&cmd, 0, sizeof(cmd));
831 cmd.tf_flags |= IDE_TFLAG_WRITE;
835 if (!blk_rq_is_passthrough(rq) || blk_rq_bytes(rq)) {
836 ide_init_sg_cmd(&cmd, blk_rq_bytes(rq));
837 ide_map_sg(drive, &cmd);
840 return ide_issue_pc(drive, &cmd);
842 nsectors = blk_rq_sectors(rq);
847 ide_complete_rq(drive, uptodate ? 0 : -EIO, nsectors << 9);
855 * Routines which queue packet commands take as a final argument a pointer to a
856 * request_sense struct. If execution of the command results in an error with a
857 * CHECK CONDITION status, this structure will be filled with the results of the
858 * subsequent request sense command. The pointer can also be NULL, in which case
859 * no sense information is returned.
861 static void msf_from_bcd(struct atapi_msf *msf)
863 msf->minute = bcd2bin(msf->minute);
864 msf->second = bcd2bin(msf->second);
865 msf->frame = bcd2bin(msf->frame);
868 int cdrom_check_status(ide_drive_t *drive, struct request_sense *sense)
870 struct cdrom_info *info = drive->driver_data;
871 struct cdrom_device_info *cdi = &info->devinfo;
872 unsigned char cmd[BLK_MAX_CDB];
874 ide_debug_log(IDE_DBG_FUNC, "enter");
876 memset(cmd, 0, BLK_MAX_CDB);
877 cmd[0] = GPCMD_TEST_UNIT_READY;
880 * Sanyo 3 CD changer uses byte 7 of TEST_UNIT_READY to switch CDs
881 * instead of supporting the LOAD_UNLOAD opcode.
883 cmd[7] = cdi->sanyo_slot % 3;
885 return ide_cd_queue_pc(drive, cmd, 0, NULL, NULL, sense, 0, RQF_QUIET);
888 static int cdrom_read_capacity(ide_drive_t *drive, unsigned long *capacity,
889 unsigned long *sectors_per_frame,
890 struct request_sense *sense)
898 unsigned char cmd[BLK_MAX_CDB];
899 unsigned len = sizeof(capbuf);
902 ide_debug_log(IDE_DBG_FUNC, "enter");
904 memset(cmd, 0, BLK_MAX_CDB);
905 cmd[0] = GPCMD_READ_CDVD_CAPACITY;
907 stat = ide_cd_queue_pc(drive, cmd, 0, &capbuf, &len, sense, 0,
913 * Sanity check the given block size, in so far as making
914 * sure the sectors_per_frame we give to the caller won't
915 * end up being bogus.
917 blocklen = be32_to_cpu(capbuf.blocklen);
918 blocklen = (blocklen >> SECTOR_BITS) << SECTOR_BITS;
926 printk_once(KERN_ERR PFX "%s: weird block size %u; "
927 "setting default block size to 2048\n",
928 drive->name, blocklen);
933 *capacity = 1 + be32_to_cpu(capbuf.lba);
934 *sectors_per_frame = blocklen >> SECTOR_BITS;
936 ide_debug_log(IDE_DBG_PROBE, "cap: %lu, sectors_per_frame: %lu",
937 *capacity, *sectors_per_frame);
942 static int cdrom_read_tocentry(ide_drive_t *drive, int trackno, int msf_flag,
943 int format, char *buf, int buflen,
944 struct request_sense *sense)
946 unsigned char cmd[BLK_MAX_CDB];
948 ide_debug_log(IDE_DBG_FUNC, "enter");
950 memset(cmd, 0, BLK_MAX_CDB);
952 cmd[0] = GPCMD_READ_TOC_PMA_ATIP;
954 cmd[7] = (buflen >> 8);
955 cmd[8] = (buflen & 0xff);
956 cmd[9] = (format << 6);
961 return ide_cd_queue_pc(drive, cmd, 0, buf, &buflen, sense, 0, RQF_QUIET);
964 /* Try to read the entire TOC for the disk into our internal buffer. */
965 int ide_cd_read_toc(ide_drive_t *drive, struct request_sense *sense)
967 int stat, ntracks, i;
968 struct cdrom_info *info = drive->driver_data;
969 struct cdrom_device_info *cdi = &info->devinfo;
970 struct atapi_toc *toc = info->toc;
972 struct atapi_toc_header hdr;
973 struct atapi_toc_entry ent;
976 unsigned long sectors_per_frame = SECTORS_PER_FRAME;
978 ide_debug_log(IDE_DBG_FUNC, "enter");
981 /* try to allocate space */
982 toc = kmalloc(sizeof(struct atapi_toc), GFP_KERNEL);
984 printk(KERN_ERR PFX "%s: No cdrom TOC buffer!\n",
992 * Check to see if the existing data is still valid. If it is,
995 (void) cdrom_check_status(drive, sense);
997 if (drive->atapi_flags & IDE_AFLAG_TOC_VALID)
1000 /* try to get the total cdrom capacity and sector size */
1001 stat = cdrom_read_capacity(drive, &toc->capacity, §ors_per_frame,
1004 toc->capacity = 0x1fffff;
1006 set_capacity(info->disk, toc->capacity * sectors_per_frame);
1007 /* save a private copy of the TOC capacity for error handling */
1008 drive->probed_capacity = toc->capacity * sectors_per_frame;
1010 blk_queue_logical_block_size(drive->queue,
1011 sectors_per_frame << SECTOR_BITS);
1013 /* first read just the header, so we know how long the TOC is */
1014 stat = cdrom_read_tocentry(drive, 0, 1, 0, (char *) &toc->hdr,
1015 sizeof(struct atapi_toc_header), sense);
1019 if (drive->atapi_flags & IDE_AFLAG_TOCTRACKS_AS_BCD) {
1020 toc->hdr.first_track = bcd2bin(toc->hdr.first_track);
1021 toc->hdr.last_track = bcd2bin(toc->hdr.last_track);
1024 ntracks = toc->hdr.last_track - toc->hdr.first_track + 1;
1027 if (ntracks > MAX_TRACKS)
1028 ntracks = MAX_TRACKS;
1030 /* now read the whole schmeer */
1031 stat = cdrom_read_tocentry(drive, toc->hdr.first_track, 1, 0,
1033 sizeof(struct atapi_toc_header) +
1035 sizeof(struct atapi_toc_entry), sense);
1037 if (stat && toc->hdr.first_track > 1) {
1039 * Cds with CDI tracks only don't have any TOC entries, despite
1040 * of this the returned values are
1041 * first_track == last_track = number of CDI tracks + 1,
1042 * so that this case is indistinguishable from the same layout
1043 * plus an additional audio track. If we get an error for the
1044 * regular case, we assume a CDI without additional audio
1045 * tracks. In this case the readable TOC is empty (CDI tracks
1046 * are not included) and only holds the Leadout entry.
1051 stat = cdrom_read_tocentry(drive, CDROM_LEADOUT, 1, 0,
1053 sizeof(struct atapi_toc_header) +
1055 sizeof(struct atapi_toc_entry),
1060 if (drive->atapi_flags & IDE_AFLAG_TOCTRACKS_AS_BCD) {
1061 toc->hdr.first_track = (u8)bin2bcd(CDROM_LEADOUT);
1062 toc->hdr.last_track = (u8)bin2bcd(CDROM_LEADOUT);
1064 toc->hdr.first_track = CDROM_LEADOUT;
1065 toc->hdr.last_track = CDROM_LEADOUT;
1072 toc->hdr.toc_length = be16_to_cpu(toc->hdr.toc_length);
1074 if (drive->atapi_flags & IDE_AFLAG_TOCTRACKS_AS_BCD) {
1075 toc->hdr.first_track = bcd2bin(toc->hdr.first_track);
1076 toc->hdr.last_track = bcd2bin(toc->hdr.last_track);
1079 for (i = 0; i <= ntracks; i++) {
1080 if (drive->atapi_flags & IDE_AFLAG_TOCADDR_AS_BCD) {
1081 if (drive->atapi_flags & IDE_AFLAG_TOCTRACKS_AS_BCD)
1082 toc->ent[i].track = bcd2bin(toc->ent[i].track);
1083 msf_from_bcd(&toc->ent[i].addr.msf);
1085 toc->ent[i].addr.lba = msf_to_lba(toc->ent[i].addr.msf.minute,
1086 toc->ent[i].addr.msf.second,
1087 toc->ent[i].addr.msf.frame);
1090 if (toc->hdr.first_track != CDROM_LEADOUT) {
1091 /* read the multisession information */
1092 stat = cdrom_read_tocentry(drive, 0, 0, 1, (char *)&ms_tmp,
1093 sizeof(ms_tmp), sense);
1097 toc->last_session_lba = be32_to_cpu(ms_tmp.ent.addr.lba);
1099 ms_tmp.hdr.last_track = CDROM_LEADOUT;
1100 ms_tmp.hdr.first_track = ms_tmp.hdr.last_track;
1101 toc->last_session_lba = msf_to_lba(0, 2, 0); /* 0m 2s 0f */
1104 if (drive->atapi_flags & IDE_AFLAG_TOCADDR_AS_BCD) {
1105 /* re-read multisession information using MSF format */
1106 stat = cdrom_read_tocentry(drive, 0, 1, 1, (char *)&ms_tmp,
1107 sizeof(ms_tmp), sense);
1111 msf_from_bcd(&ms_tmp.ent.addr.msf);
1112 toc->last_session_lba = msf_to_lba(ms_tmp.ent.addr.msf.minute,
1113 ms_tmp.ent.addr.msf.second,
1114 ms_tmp.ent.addr.msf.frame);
1117 toc->xa_flag = (ms_tmp.hdr.first_track != ms_tmp.hdr.last_track);
1119 /* now try to get the total cdrom capacity */
1120 stat = cdrom_get_last_written(cdi, &last_written);
1121 if (!stat && (last_written > toc->capacity)) {
1122 toc->capacity = last_written;
1123 set_capacity(info->disk, toc->capacity * sectors_per_frame);
1124 drive->probed_capacity = toc->capacity * sectors_per_frame;
1127 /* Remember that we've read this stuff. */
1128 drive->atapi_flags |= IDE_AFLAG_TOC_VALID;
1133 int ide_cdrom_get_capabilities(ide_drive_t *drive, u8 *buf)
1135 struct cdrom_info *info = drive->driver_data;
1136 struct cdrom_device_info *cdi = &info->devinfo;
1137 struct packet_command cgc;
1138 int stat, attempts = 3, size = ATAPI_CAPABILITIES_PAGE_SIZE;
1140 ide_debug_log(IDE_DBG_FUNC, "enter");
1142 if ((drive->atapi_flags & IDE_AFLAG_FULL_CAPS_PAGE) == 0)
1143 size -= ATAPI_CAPABILITIES_PAGE_PAD_SIZE;
1145 init_cdrom_command(&cgc, buf, size, CGC_DATA_UNKNOWN);
1147 /* we seem to get stat=0x01,err=0x00 the first time (??) */
1148 stat = cdrom_mode_sense(cdi, &cgc, GPMODE_CAPABILITIES_PAGE, 0);
1151 } while (--attempts);
1155 void ide_cdrom_update_speed(ide_drive_t *drive, u8 *buf)
1157 struct cdrom_info *cd = drive->driver_data;
1158 u16 curspeed, maxspeed;
1160 ide_debug_log(IDE_DBG_FUNC, "enter");
1162 if (drive->atapi_flags & IDE_AFLAG_LE_SPEED_FIELDS) {
1163 curspeed = le16_to_cpup((__le16 *)&buf[8 + 14]);
1164 maxspeed = le16_to_cpup((__le16 *)&buf[8 + 8]);
1166 curspeed = be16_to_cpup((__be16 *)&buf[8 + 14]);
1167 maxspeed = be16_to_cpup((__be16 *)&buf[8 + 8]);
1170 ide_debug_log(IDE_DBG_PROBE, "curspeed: %u, maxspeed: %u",
1171 curspeed, maxspeed);
1173 cd->current_speed = DIV_ROUND_CLOSEST(curspeed, 176);
1174 cd->max_speed = DIV_ROUND_CLOSEST(maxspeed, 176);
1177 #define IDE_CD_CAPABILITIES \
1178 (CDC_CLOSE_TRAY | CDC_OPEN_TRAY | CDC_LOCK | CDC_SELECT_SPEED | \
1179 CDC_SELECT_DISC | CDC_MULTI_SESSION | CDC_MCN | CDC_MEDIA_CHANGED | \
1180 CDC_PLAY_AUDIO | CDC_RESET | CDC_DRIVE_STATUS | CDC_CD_R | \
1181 CDC_CD_RW | CDC_DVD | CDC_DVD_R | CDC_DVD_RAM | CDC_GENERIC_PACKET | \
1182 CDC_MO_DRIVE | CDC_MRW | CDC_MRW_W | CDC_RAM)
1184 static const struct cdrom_device_ops ide_cdrom_dops = {
1185 .open = ide_cdrom_open_real,
1186 .release = ide_cdrom_release_real,
1187 .drive_status = ide_cdrom_drive_status,
1188 .check_events = ide_cdrom_check_events_real,
1189 .tray_move = ide_cdrom_tray_move,
1190 .lock_door = ide_cdrom_lock_door,
1191 .select_speed = ide_cdrom_select_speed,
1192 .get_last_session = ide_cdrom_get_last_session,
1193 .get_mcn = ide_cdrom_get_mcn,
1194 .reset = ide_cdrom_reset,
1195 .audio_ioctl = ide_cdrom_audio_ioctl,
1196 .capability = IDE_CD_CAPABILITIES,
1197 .generic_packet = ide_cdrom_packet,
1200 static int ide_cdrom_register(ide_drive_t *drive, int nslots)
1202 struct cdrom_info *info = drive->driver_data;
1203 struct cdrom_device_info *devinfo = &info->devinfo;
1205 ide_debug_log(IDE_DBG_PROBE, "nslots: %d", nslots);
1207 devinfo->ops = &ide_cdrom_dops;
1208 devinfo->speed = info->current_speed;
1209 devinfo->capacity = nslots;
1210 devinfo->handle = drive;
1211 strcpy(devinfo->name, drive->name);
1213 if (drive->atapi_flags & IDE_AFLAG_NO_SPEED_SELECT)
1214 devinfo->mask |= CDC_SELECT_SPEED;
1216 devinfo->disk = info->disk;
1217 return register_cdrom(devinfo);
1220 static int ide_cdrom_probe_capabilities(ide_drive_t *drive)
1222 struct cdrom_info *cd = drive->driver_data;
1223 struct cdrom_device_info *cdi = &cd->devinfo;
1224 u8 buf[ATAPI_CAPABILITIES_PAGE_SIZE];
1225 mechtype_t mechtype;
1228 ide_debug_log(IDE_DBG_PROBE, "media: 0x%x, atapi_flags: 0x%lx",
1229 drive->media, drive->atapi_flags);
1231 cdi->mask = (CDC_CD_R | CDC_CD_RW | CDC_DVD | CDC_DVD_R |
1232 CDC_DVD_RAM | CDC_SELECT_DISC | CDC_PLAY_AUDIO |
1233 CDC_MO_DRIVE | CDC_RAM);
1235 if (drive->media == ide_optical) {
1236 cdi->mask &= ~(CDC_MO_DRIVE | CDC_RAM);
1237 printk(KERN_ERR PFX "%s: ATAPI magneto-optical drive\n",
1242 if (drive->atapi_flags & IDE_AFLAG_PRE_ATAPI12) {
1243 drive->atapi_flags &= ~IDE_AFLAG_NO_EJECT;
1244 cdi->mask &= ~CDC_PLAY_AUDIO;
1249 * We have to cheat a little here. the packet will eventually be queued
1250 * with ide_cdrom_packet(), which extracts the drive from cdi->handle.
1251 * Since this device hasn't been registered with the Uniform layer yet,
1252 * it can't do this. Same goes for cdi->ops.
1254 cdi->handle = drive;
1255 cdi->ops = &ide_cdrom_dops;
1257 if (ide_cdrom_get_capabilities(drive, buf))
1260 if ((buf[8 + 6] & 0x01) == 0)
1261 drive->dev_flags &= ~IDE_DFLAG_DOORLOCKING;
1262 if (buf[8 + 6] & 0x08)
1263 drive->atapi_flags &= ~IDE_AFLAG_NO_EJECT;
1264 if (buf[8 + 3] & 0x01)
1265 cdi->mask &= ~CDC_CD_R;
1266 if (buf[8 + 3] & 0x02)
1267 cdi->mask &= ~(CDC_CD_RW | CDC_RAM);
1268 if (buf[8 + 2] & 0x38)
1269 cdi->mask &= ~CDC_DVD;
1270 if (buf[8 + 3] & 0x20)
1271 cdi->mask &= ~(CDC_DVD_RAM | CDC_RAM);
1272 if (buf[8 + 3] & 0x10)
1273 cdi->mask &= ~CDC_DVD_R;
1274 if ((buf[8 + 4] & 0x01) || (drive->atapi_flags & IDE_AFLAG_PLAY_AUDIO_OK))
1275 cdi->mask &= ~CDC_PLAY_AUDIO;
1277 mechtype = buf[8 + 6] >> 5;
1278 if (mechtype == mechtype_caddy ||
1279 mechtype == mechtype_popup ||
1280 (drive->atapi_flags & IDE_AFLAG_NO_AUTOCLOSE))
1281 cdi->mask |= CDC_CLOSE_TRAY;
1283 if (cdi->sanyo_slot > 0) {
1284 cdi->mask &= ~CDC_SELECT_DISC;
1286 } else if (mechtype == mechtype_individual_changer ||
1287 mechtype == mechtype_cartridge_changer) {
1288 nslots = cdrom_number_of_slots(cdi);
1290 cdi->mask &= ~CDC_SELECT_DISC;
1293 ide_cdrom_update_speed(drive, buf);
1295 printk(KERN_INFO PFX "%s: ATAPI", drive->name);
1297 /* don't print speed if the drive reported 0 */
1299 printk(KERN_CONT " %dX", cd->max_speed);
1301 printk(KERN_CONT " %s", (cdi->mask & CDC_DVD) ? "CD-ROM" : "DVD-ROM");
1303 if ((cdi->mask & CDC_DVD_R) == 0 || (cdi->mask & CDC_DVD_RAM) == 0)
1304 printk(KERN_CONT " DVD%s%s",
1305 (cdi->mask & CDC_DVD_R) ? "" : "-R",
1306 (cdi->mask & CDC_DVD_RAM) ? "" : "/RAM");
1308 if ((cdi->mask & CDC_CD_R) == 0 || (cdi->mask & CDC_CD_RW) == 0)
1309 printk(KERN_CONT " CD%s%s",
1310 (cdi->mask & CDC_CD_R) ? "" : "-R",
1311 (cdi->mask & CDC_CD_RW) ? "" : "/RW");
1313 if ((cdi->mask & CDC_SELECT_DISC) == 0)
1314 printk(KERN_CONT " changer w/%d slots", nslots);
1316 printk(KERN_CONT " drive");
1318 printk(KERN_CONT ", %dkB Cache\n",
1319 be16_to_cpup((__be16 *)&buf[8 + 12]));
1324 /* standard prep_rq_fn that builds 10 byte cmds */
1325 static int ide_cdrom_prep_fs(struct request_queue *q, struct request *rq)
1327 int hard_sect = queue_logical_block_size(q);
1328 long block = (long)blk_rq_pos(rq) / (hard_sect >> 9);
1329 unsigned long blocks = blk_rq_sectors(rq) / (hard_sect >> 9);
1330 struct scsi_request *req = scsi_req(rq);
1332 memset(req->cmd, 0, BLK_MAX_CDB);
1334 if (rq_data_dir(rq) == READ)
1335 req->cmd[0] = GPCMD_READ_10;
1337 req->cmd[0] = GPCMD_WRITE_10;
1342 req->cmd[2] = (block >> 24) & 0xff;
1343 req->cmd[3] = (block >> 16) & 0xff;
1344 req->cmd[4] = (block >> 8) & 0xff;
1345 req->cmd[5] = block & 0xff;
1348 * and transfer length
1350 req->cmd[7] = (blocks >> 8) & 0xff;
1351 req->cmd[8] = blocks & 0xff;
1357 * Most of the SCSI commands are supported directly by ATAPI devices.
1358 * This transform handles the few exceptions.
1360 static int ide_cdrom_prep_pc(struct request *rq)
1362 u8 *c = scsi_req(rq)->cmd;
1364 /* transform 6-byte read/write commands to the 10-byte version */
1365 if (c[0] == READ_6 || c[0] == WRITE_6) {
1372 c[0] += (READ_10 - READ_6);
1373 scsi_req(rq)->cmd_len = 10;
1378 * it's silly to pretend we understand 6-byte sense commands, just
1379 * reject with ILLEGAL_REQUEST and the caller should take the
1380 * appropriate action
1382 if (c[0] == MODE_SENSE || c[0] == MODE_SELECT) {
1383 scsi_req(rq)->result = ILLEGAL_REQUEST;
1384 return BLKPREP_KILL;
1390 static int ide_cdrom_prep_fn(struct request_queue *q, struct request *rq)
1392 if (!blk_rq_is_passthrough(rq))
1393 return ide_cdrom_prep_fs(q, rq);
1394 else if (blk_rq_is_scsi(rq))
1395 return ide_cdrom_prep_pc(rq);
1400 struct cd_list_entry {
1401 const char *id_model;
1402 const char *id_firmware;
1403 unsigned int cd_flags;
1406 #ifdef CONFIG_IDE_PROC_FS
1407 static sector_t ide_cdrom_capacity(ide_drive_t *drive)
1409 unsigned long capacity, sectors_per_frame;
1411 if (cdrom_read_capacity(drive, &capacity, §ors_per_frame, NULL))
1414 return capacity * sectors_per_frame;
1417 static int idecd_capacity_proc_show(struct seq_file *m, void *v)
1419 ide_drive_t *drive = m->private;
1421 seq_printf(m, "%llu\n", (long long)ide_cdrom_capacity(drive));
1425 static int idecd_capacity_proc_open(struct inode *inode, struct file *file)
1427 return single_open(file, idecd_capacity_proc_show, PDE_DATA(inode));
1430 static const struct file_operations idecd_capacity_proc_fops = {
1431 .owner = THIS_MODULE,
1432 .open = idecd_capacity_proc_open,
1434 .llseek = seq_lseek,
1435 .release = single_release,
1438 static ide_proc_entry_t idecd_proc[] = {
1439 { "capacity", S_IFREG|S_IRUGO, &idecd_capacity_proc_fops },
1443 static ide_proc_entry_t *ide_cd_proc_entries(ide_drive_t *drive)
1448 static const struct ide_proc_devset *ide_cd_proc_devsets(ide_drive_t *drive)
1454 static const struct cd_list_entry ide_cd_quirks_list[] = {
1455 /* SCR-3231 doesn't support the SET_CD_SPEED command. */
1456 { "SAMSUNG CD-ROM SCR-3231", NULL, IDE_AFLAG_NO_SPEED_SELECT },
1457 /* Old NEC260 (not R) was released before ATAPI 1.2 spec. */
1458 { "NEC CD-ROM DRIVE:260", "1.01", IDE_AFLAG_TOCADDR_AS_BCD |
1459 IDE_AFLAG_PRE_ATAPI12, },
1460 /* Vertos 300, some versions of this drive like to talk BCD. */
1461 { "V003S0DS", NULL, IDE_AFLAG_VERTOS_300_SSD, },
1462 /* Vertos 600 ESD. */
1463 { "V006E0DS", NULL, IDE_AFLAG_VERTOS_600_ESD, },
1465 * Sanyo 3 CD changer uses a non-standard command for CD changing
1466 * (by default standard ATAPI support for CD changers is used).
1468 { "CD-ROM CDR-C3 G", NULL, IDE_AFLAG_SANYO_3CD },
1469 { "CD-ROM CDR-C3G", NULL, IDE_AFLAG_SANYO_3CD },
1470 { "CD-ROM CDR_C36", NULL, IDE_AFLAG_SANYO_3CD },
1471 /* Stingray 8X CD-ROM. */
1472 { "STINGRAY 8422 IDE 8X CD-ROM 7-27-95", NULL, IDE_AFLAG_PRE_ATAPI12 },
1474 * ACER 50X CD-ROM and WPI 32X CD-ROM require the full spec length
1475 * mode sense page capabilities size, but older drives break.
1477 { "ATAPI CD ROM DRIVE 50X MAX", NULL, IDE_AFLAG_FULL_CAPS_PAGE },
1478 { "WPI CDS-32X", NULL, IDE_AFLAG_FULL_CAPS_PAGE },
1479 /* ACER/AOpen 24X CD-ROM has the speed fields byte-swapped. */
1480 { "", "241N", IDE_AFLAG_LE_SPEED_FIELDS },
1482 * Some drives used by Apple don't advertise audio play
1483 * but they do support reading TOC & audio datas.
1485 { "MATSHITADVD-ROM SR-8187", NULL, IDE_AFLAG_PLAY_AUDIO_OK },
1486 { "MATSHITADVD-ROM SR-8186", NULL, IDE_AFLAG_PLAY_AUDIO_OK },
1487 { "MATSHITADVD-ROM SR-8176", NULL, IDE_AFLAG_PLAY_AUDIO_OK },
1488 { "MATSHITADVD-ROM SR-8174", NULL, IDE_AFLAG_PLAY_AUDIO_OK },
1489 { "Optiarc DVD RW AD-5200A", NULL, IDE_AFLAG_PLAY_AUDIO_OK },
1490 { "Optiarc DVD RW AD-7200A", NULL, IDE_AFLAG_PLAY_AUDIO_OK },
1491 { "Optiarc DVD RW AD-7543A", NULL, IDE_AFLAG_NO_AUTOCLOSE },
1492 { "TEAC CD-ROM CD-224E", NULL, IDE_AFLAG_NO_AUTOCLOSE },
1496 static unsigned int ide_cd_flags(u16 *id)
1498 const struct cd_list_entry *cle = ide_cd_quirks_list;
1500 while (cle->id_model) {
1501 if (strcmp(cle->id_model, (char *)&id[ATA_ID_PROD]) == 0 &&
1502 (cle->id_firmware == NULL ||
1503 strstr((char *)&id[ATA_ID_FW_REV], cle->id_firmware)))
1504 return cle->cd_flags;
1511 static int ide_cdrom_setup(ide_drive_t *drive)
1513 struct cdrom_info *cd = drive->driver_data;
1514 struct cdrom_device_info *cdi = &cd->devinfo;
1515 struct request_queue *q = drive->queue;
1516 u16 *id = drive->id;
1517 char *fw_rev = (char *)&id[ATA_ID_FW_REV];
1520 ide_debug_log(IDE_DBG_PROBE, "enter");
1522 blk_queue_prep_rq(q, ide_cdrom_prep_fn);
1523 blk_queue_dma_alignment(q, 31);
1524 blk_queue_update_dma_pad(q, 15);
1526 drive->dev_flags |= IDE_DFLAG_MEDIA_CHANGED;
1527 drive->atapi_flags = IDE_AFLAG_NO_EJECT | ide_cd_flags(id);
1529 if ((drive->atapi_flags & IDE_AFLAG_VERTOS_300_SSD) &&
1530 fw_rev[4] == '1' && fw_rev[6] <= '2')
1531 drive->atapi_flags |= (IDE_AFLAG_TOCTRACKS_AS_BCD |
1532 IDE_AFLAG_TOCADDR_AS_BCD);
1533 else if ((drive->atapi_flags & IDE_AFLAG_VERTOS_600_ESD) &&
1534 fw_rev[4] == '1' && fw_rev[6] <= '2')
1535 drive->atapi_flags |= IDE_AFLAG_TOCTRACKS_AS_BCD;
1536 else if (drive->atapi_flags & IDE_AFLAG_SANYO_3CD)
1537 /* 3 => use CD in slot 0 */
1538 cdi->sanyo_slot = 3;
1540 nslots = ide_cdrom_probe_capabilities(drive);
1542 blk_queue_logical_block_size(q, CD_FRAMESIZE);
1544 if (ide_cdrom_register(drive, nslots)) {
1545 printk(KERN_ERR PFX "%s: %s failed to register device with the"
1546 " cdrom driver.\n", drive->name, __func__);
1547 cd->devinfo.handle = NULL;
1551 ide_proc_register_driver(drive, cd->driver);
1555 static void ide_cd_remove(ide_drive_t *drive)
1557 struct cdrom_info *info = drive->driver_data;
1559 ide_debug_log(IDE_DBG_FUNC, "enter");
1561 ide_proc_unregister_driver(drive, info->driver);
1562 device_del(&info->dev);
1563 del_gendisk(info->disk);
1565 mutex_lock(&idecd_ref_mutex);
1566 put_device(&info->dev);
1567 mutex_unlock(&idecd_ref_mutex);
1570 static void ide_cd_release(struct device *dev)
1572 struct cdrom_info *info = to_ide_drv(dev, cdrom_info);
1573 struct cdrom_device_info *devinfo = &info->devinfo;
1574 ide_drive_t *drive = info->drive;
1575 struct gendisk *g = info->disk;
1577 ide_debug_log(IDE_DBG_FUNC, "enter");
1580 if (devinfo->handle == drive)
1581 unregister_cdrom(devinfo);
1582 drive->driver_data = NULL;
1583 blk_queue_prep_rq(drive->queue, NULL);
1584 g->private_data = NULL;
1589 static int ide_cd_probe(ide_drive_t *);
1591 static struct ide_driver ide_cdrom_driver = {
1593 .owner = THIS_MODULE,
1594 .name = "ide-cdrom",
1595 .bus = &ide_bus_type,
1597 .probe = ide_cd_probe,
1598 .remove = ide_cd_remove,
1599 .version = IDECD_VERSION,
1600 .do_request = ide_cd_do_request,
1601 #ifdef CONFIG_IDE_PROC_FS
1602 .proc_entries = ide_cd_proc_entries,
1603 .proc_devsets = ide_cd_proc_devsets,
1607 static int idecd_open(struct block_device *bdev, fmode_t mode)
1609 struct cdrom_info *info;
1612 mutex_lock(&ide_cd_mutex);
1613 info = ide_cd_get(bdev->bd_disk);
1617 rc = cdrom_open(&info->devinfo, bdev, mode);
1621 mutex_unlock(&ide_cd_mutex);
1625 static void idecd_release(struct gendisk *disk, fmode_t mode)
1627 struct cdrom_info *info = ide_drv_g(disk, cdrom_info);
1629 mutex_lock(&ide_cd_mutex);
1630 cdrom_release(&info->devinfo, mode);
1633 mutex_unlock(&ide_cd_mutex);
1636 static int idecd_set_spindown(struct cdrom_device_info *cdi, unsigned long arg)
1638 struct packet_command cgc;
1643 if (copy_from_user(&spindown, (void __user *)arg, sizeof(char)))
1646 init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_UNKNOWN);
1648 stat = cdrom_mode_sense(cdi, &cgc, GPMODE_CDROM_PAGE, 0);
1652 buffer[11] = (buffer[11] & 0xf0) | (spindown & 0x0f);
1653 return cdrom_mode_select(cdi, &cgc);
1656 static int idecd_get_spindown(struct cdrom_device_info *cdi, unsigned long arg)
1658 struct packet_command cgc;
1663 init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_UNKNOWN);
1665 stat = cdrom_mode_sense(cdi, &cgc, GPMODE_CDROM_PAGE, 0);
1669 spindown = buffer[11] & 0x0f;
1670 if (copy_to_user((void __user *)arg, &spindown, sizeof(char)))
1675 static int idecd_locked_ioctl(struct block_device *bdev, fmode_t mode,
1676 unsigned int cmd, unsigned long arg)
1678 struct cdrom_info *info = ide_drv_g(bdev->bd_disk, cdrom_info);
1682 case CDROMSETSPINDOWN:
1683 return idecd_set_spindown(&info->devinfo, arg);
1684 case CDROMGETSPINDOWN:
1685 return idecd_get_spindown(&info->devinfo, arg);
1690 err = generic_ide_ioctl(info->drive, bdev, cmd, arg);
1692 err = cdrom_ioctl(&info->devinfo, bdev, mode, cmd, arg);
1697 static int idecd_ioctl(struct block_device *bdev, fmode_t mode,
1698 unsigned int cmd, unsigned long arg)
1702 mutex_lock(&ide_cd_mutex);
1703 ret = idecd_locked_ioctl(bdev, mode, cmd, arg);
1704 mutex_unlock(&ide_cd_mutex);
1710 static unsigned int idecd_check_events(struct gendisk *disk,
1711 unsigned int clearing)
1713 struct cdrom_info *info = ide_drv_g(disk, cdrom_info);
1714 return cdrom_check_events(&info->devinfo, clearing);
1717 static int idecd_revalidate_disk(struct gendisk *disk)
1719 struct cdrom_info *info = ide_drv_g(disk, cdrom_info);
1720 struct request_sense sense;
1722 ide_cd_read_toc(info->drive, &sense);
1727 static const struct block_device_operations idecd_ops = {
1728 .owner = THIS_MODULE,
1730 .release = idecd_release,
1731 .ioctl = idecd_ioctl,
1732 .check_events = idecd_check_events,
1733 .revalidate_disk = idecd_revalidate_disk
1736 /* module options */
1737 static unsigned long debug_mask;
1738 module_param(debug_mask, ulong, 0644);
1740 MODULE_DESCRIPTION("ATAPI CD-ROM Driver");
1742 static int ide_cd_probe(ide_drive_t *drive)
1744 struct cdrom_info *info;
1746 struct request_sense sense;
1748 ide_debug_log(IDE_DBG_PROBE, "driver_req: %s, media: 0x%x",
1749 drive->driver_req, drive->media);
1751 if (!strstr("ide-cdrom", drive->driver_req))
1754 if (drive->media != ide_cdrom && drive->media != ide_optical)
1757 drive->debug_mask = debug_mask;
1758 drive->irq_handler = cdrom_newpc_intr;
1760 info = kzalloc(sizeof(struct cdrom_info), GFP_KERNEL);
1762 printk(KERN_ERR PFX "%s: Can't allocate a cdrom structure\n",
1767 g = alloc_disk(1 << PARTN_BITS);
1771 ide_init_disk(g, drive);
1773 info->dev.parent = &drive->gendev;
1774 info->dev.release = ide_cd_release;
1775 dev_set_name(&info->dev, "%s", dev_name(&drive->gendev));
1777 if (device_register(&info->dev))
1780 info->drive = drive;
1781 info->driver = &ide_cdrom_driver;
1784 g->private_data = &info->driver;
1786 drive->driver_data = info;
1789 g->flags = GENHD_FL_CD | GENHD_FL_REMOVABLE;
1790 if (ide_cdrom_setup(drive)) {
1791 put_device(&info->dev);
1795 ide_cd_read_toc(drive, &sense);
1796 g->fops = &idecd_ops;
1797 g->flags |= GENHD_FL_REMOVABLE | GENHD_FL_BLOCK_EVENTS_ON_EXCL_WRITE;
1798 device_add_disk(&drive->gendev, g);
1809 static void __exit ide_cdrom_exit(void)
1811 driver_unregister(&ide_cdrom_driver.gen_driver);
1814 static int __init ide_cdrom_init(void)
1816 printk(KERN_INFO DRV_NAME " driver " IDECD_VERSION "\n");
1817 return driver_register(&ide_cdrom_driver.gen_driver);
1820 MODULE_ALIAS("ide:*m-cdrom*");
1821 MODULE_ALIAS("ide-cd");
1822 module_init(ide_cdrom_init);
1823 module_exit(ide_cdrom_exit);
1824 MODULE_LICENSE("GPL");