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/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 ide_cd_complete_failed_rq(ide_drive_t *drive, struct request *rq)
212 * For REQ_TYPE_SENSE, "rq->special" points to the original
213 * failed request. Also, the sense data should be read
214 * directly from rq which might be different from the original
215 * sense buffer if it got copied during mapping.
217 struct request *failed = (struct request *)rq->special;
218 void *sense = bio_data(rq->bio);
223 * Sense is always read into drive->sense_data.
224 * Copy back if the failed request has its
227 memcpy(failed->sense, sense, 18);
228 sense = failed->sense;
229 failed->sense_len = rq->sense_len;
231 cdrom_analyze_sense_data(drive, failed, sense);
233 if (ide_end_rq(drive, failed, -EIO, blk_rq_bytes(failed)))
236 cdrom_analyze_sense_data(drive, NULL, sense);
241 * Allow the drive 5 seconds to recover; some devices will return NOT_READY
242 * while flushing data from cache.
244 * returns: 0 failed (write timeout expired)
247 static int ide_cd_breathe(ide_drive_t *drive, struct request *rq)
250 struct cdrom_info *info = drive->driver_data;
253 info->write_timeout = jiffies + ATAPI_WAIT_WRITE_BUSY;
257 if (time_after(jiffies, info->write_timeout))
260 struct request_queue *q = drive->queue;
264 * take a breather relying on the unplug timer to kick us again
267 spin_lock_irqsave(q->queue_lock, flags);
269 spin_unlock_irqrestore(q->queue_lock, flags);
277 * 0: if the request should be continued.
278 * 1: if the request will be going through error recovery.
279 * 2: if the request should be ended.
281 static int cdrom_decode_status(ide_drive_t *drive, u8 stat)
283 ide_hwif_t *hwif = drive->hwif;
284 struct request *rq = hwif->rq;
285 int err, sense_key, do_end_request = 0;
286 u8 quiet = rq->cmd_flags & REQ_QUIET;
288 /* get the IDE error register */
289 err = ide_read_error(drive);
290 sense_key = err >> 4;
292 ide_debug_log(IDE_DBG_RQ, "cmd: 0x%x, rq->cmd_type: 0x%x, err: 0x%x, "
294 rq->cmd[0], rq->cmd_type, err, stat);
296 if (blk_sense_request(rq)) {
298 * We got an error trying to get sense info from the drive
299 * (probably while trying to recover from a former error).
302 rq->cmd_flags |= REQ_FAILED;
306 /* if we have an error, pass CHECK_CONDITION as the SCSI status byte */
307 if (blk_pc_request(rq) && !rq->errors)
308 rq->errors = SAM_STAT_CHECK_CONDITION;
310 if (blk_noretry_request(rq))
315 if (blk_fs_request(rq) && rq_data_dir(rq) == WRITE) {
316 if (ide_cd_breathe(drive, rq))
319 cdrom_saw_media_change(drive);
321 if (blk_fs_request(rq) && !quiet)
322 printk(KERN_ERR PFX "%s: tray open\n",
328 cdrom_saw_media_change(drive);
330 if (blk_fs_request(rq) == 0)
334 * Arrange to retry the request but be sure to give up if we've
335 * retried too many times.
337 if (++rq->errors > ERROR_MAX)
340 case ILLEGAL_REQUEST:
342 * Don't print error message for this condition -- SFF8090i
343 * indicates that 5/24/00 is the correct response to a request
344 * to close the tray if the drive doesn't have that capability.
346 * cdrom_log_sense() knows this!
348 if (rq->cmd[0] == GPCMD_START_STOP_UNIT)
353 * No point in retrying after an illegal request or data
357 ide_dump_status(drive, "command error", stat);
362 * No point in re-trying a zillion times on a bad sector.
363 * If we got here the error is not correctable.
366 ide_dump_status(drive, "media error "
367 "(bad sector)", stat);
371 /* disk appears blank? */
373 ide_dump_status(drive, "media error (blank)",
378 if (blk_fs_request(rq) == 0)
380 if (err & ~ATA_ABORTED) {
381 /* go to the default handler for other errors */
382 ide_error(drive, "cdrom_decode_status", stat);
384 } else if (++rq->errors > ERROR_MAX)
385 /* we've racked up too many retries, abort */
389 if (blk_fs_request(rq) == 0) {
390 rq->cmd_flags |= REQ_FAILED;
395 * End a request through request sense analysis when we have sense data.
396 * We need this in order to perform end of media processing.
401 /* if we got a CHECK_CONDITION status, queue a request sense command */
403 return ide_queue_sense_rq(drive, NULL) ? 2 : 1;
407 if (stat & ATA_ERR) {
408 struct request_queue *q = drive->queue;
411 spin_lock_irqsave(q->queue_lock, flags);
412 blkdev_dequeue_request(rq);
413 spin_unlock_irqrestore(q->queue_lock, flags);
417 return ide_queue_sense_rq(drive, rq) ? 2 : 1;
423 * Check the contents of the interrupt reason register from the cdrom
424 * and attempt to recover if there are problems. Returns 0 if everything's
425 * ok; nonzero if the request has been terminated.
427 static int ide_cd_check_ireason(ide_drive_t *drive, struct request *rq,
428 int len, int ireason, int rw)
430 ide_hwif_t *hwif = drive->hwif;
432 ide_debug_log(IDE_DBG_FUNC, "ireason: 0x%x, rw: 0x%x", ireason, rw);
435 * ireason == 0: the drive wants to receive data from us
436 * ireason == 2: the drive is expecting to transfer data to us
438 if (ireason == (!rw << 1))
440 else if (ireason == (rw << 1)) {
443 printk(KERN_ERR PFX "%s: %s: wrong transfer direction!\n",
444 drive->name, __func__);
446 ide_pad_transfer(drive, rw, len);
447 } else if (rw == 0 && ireason == 1) {
449 * Some drives (ASUS) seem to tell us that status info is
450 * available. Just get it and ignore.
452 (void)hwif->tp_ops->read_status(hwif);
455 /* drive wants a command packet, or invalid ireason... */
456 printk(KERN_ERR PFX "%s: %s: bad interrupt reason 0x%02x\n",
457 drive->name, __func__, ireason);
460 if (rq->cmd_type == REQ_TYPE_ATA_PC)
461 rq->cmd_flags |= REQ_FAILED;
466 static void ide_cd_request_sense_fixup(ide_drive_t *drive, struct ide_cmd *cmd)
468 struct request *rq = cmd->rq;
470 ide_debug_log(IDE_DBG_FUNC, "rq->cmd[0]: 0x%x", rq->cmd[0]);
473 * Some of the trailing request sense fields are optional,
474 * and some drives don't send them. Sigh.
476 if (rq->cmd[0] == GPCMD_REQUEST_SENSE &&
477 cmd->nleft > 0 && cmd->nleft <= 5)
481 int ide_cd_queue_pc(ide_drive_t *drive, const unsigned char *cmd,
482 int write, void *buffer, unsigned *bufflen,
483 struct request_sense *sense, int timeout,
484 unsigned int cmd_flags)
486 struct cdrom_info *info = drive->driver_data;
487 struct request_sense local_sense;
489 unsigned int flags = 0;
492 sense = &local_sense;
494 ide_debug_log(IDE_DBG_PC, "cmd[0]: 0x%x, write: 0x%x, timeout: %d, "
496 cmd[0], write, timeout, cmd_flags);
498 /* start of retry loop */
503 rq = blk_get_request(drive->queue, write, __GFP_WAIT);
505 memcpy(rq->cmd, cmd, BLK_MAX_CDB);
506 rq->cmd_type = REQ_TYPE_ATA_PC;
508 rq->cmd_flags |= cmd_flags;
509 rq->timeout = timeout;
511 error = blk_rq_map_kern(drive->queue, rq, buffer,
519 error = blk_execute_rq(drive->queue, info->disk, rq, 0);
522 *bufflen = rq->data_len;
524 flags = rq->cmd_flags;
528 * FIXME: we should probably abort/retry or something in case of
531 if (flags & REQ_FAILED) {
533 * The request failed. Retry if it was due to a unit
534 * attention status (usually means media was changed).
536 struct request_sense *reqbuf = sense;
538 if (reqbuf->sense_key == UNIT_ATTENTION)
539 cdrom_saw_media_change(drive);
540 else if (reqbuf->sense_key == NOT_READY &&
541 reqbuf->asc == 4 && reqbuf->ascq != 4) {
543 * The drive is in the process of loading
544 * a disk. Retry, but wait a little to give
545 * the drive time to complete the load.
549 /* otherwise, don't retry */
555 /* end of retry loop */
556 } while ((flags & REQ_FAILED) && retries >= 0);
558 /* return an error if the command failed */
559 return (flags & REQ_FAILED) ? -EIO : 0;
562 static void ide_cd_error_cmd(ide_drive_t *drive, struct ide_cmd *cmd)
564 unsigned int nr_bytes = cmd->nbytes - cmd->nleft;
566 if (cmd->tf_flags & IDE_TFLAG_WRITE)
567 nr_bytes -= cmd->last_xfer_len;
570 ide_complete_rq(drive, 0, nr_bytes);
573 static ide_startstop_t cdrom_newpc_intr(ide_drive_t *drive)
575 ide_hwif_t *hwif = drive->hwif;
576 struct ide_cmd *cmd = &hwif->cmd;
577 struct request *rq = hwif->rq;
578 ide_expiry_t *expiry = NULL;
579 int dma_error = 0, dma, thislen, uptodate = 0;
580 int write = (rq_data_dir(rq) == WRITE) ? 1 : 0, rc, nsectors;
581 int sense = blk_sense_request(rq);
582 unsigned int timeout;
586 ide_debug_log(IDE_DBG_PC, "cmd: 0x%x, write: 0x%x", rq->cmd[0], write);
588 /* check for errors */
592 drive->waiting_for_dma = 0;
593 dma_error = hwif->dma_ops->dma_end(drive);
594 ide_dma_unmap_sg(drive, cmd);
596 printk(KERN_ERR PFX "%s: DMA %s error\n", drive->name,
597 write ? "write" : "read");
603 stat = hwif->tp_ops->read_status(hwif);
605 if (!OK_STAT(stat, 0, BAD_R_STAT)) {
606 rc = cdrom_decode_status(drive, stat);
614 /* using dma, transfer is complete now */
617 return ide_error(drive, "dma error", stat);
622 ide_read_bcount_and_ireason(drive, &len, &ireason);
624 thislen = blk_fs_request(rq) ? len : cmd->nleft;
628 ide_debug_log(IDE_DBG_PC, "DRQ: stat: 0x%x, thislen: %d",
631 /* If DRQ is clear, the command has completed. */
632 if ((stat & ATA_DRQ) == 0) {
633 if (blk_fs_request(rq)) {
635 * If we're not done reading/writing, complain.
636 * Otherwise, complete the command normally.
639 if (cmd->nleft > 0) {
640 printk(KERN_ERR PFX "%s: %s: data underrun "
641 "(%u bytes)\n", drive->name, __func__,
644 rq->cmd_flags |= REQ_FAILED;
647 } else if (!blk_pc_request(rq)) {
648 ide_cd_request_sense_fixup(drive, cmd);
649 /* complain if we still have data left to transfer */
650 uptodate = cmd->nleft ? 0 : 1;
652 rq->cmd_flags |= REQ_FAILED;
657 /* check which way to transfer data */
658 rc = ide_cd_check_ireason(drive, rq, len, ireason, write);
662 cmd->last_xfer_len = 0;
664 ide_debug_log(IDE_DBG_PC, "data transfer, rq->cmd_type: 0x%x, "
666 rq->cmd_type, ireason);
669 while (thislen > 0) {
670 int blen = min_t(int, thislen, cmd->nleft);
675 ide_pio_bytes(drive, cmd, write, blen);
676 cmd->last_xfer_len += blen;
681 if (sense && write == 0)
682 rq->sense_len += blen;
685 /* pad, if necessary */
687 if (blk_fs_request(rq) == 0 || write == 0)
688 ide_pad_transfer(drive, write, len);
690 printk(KERN_ERR PFX "%s: confused, missing data\n",
692 blk_dump_rq_flags(rq, "cdrom_newpc_intr");
696 if (blk_pc_request(rq)) {
697 timeout = rq->timeout;
699 timeout = ATAPI_WAIT_PC;
700 if (!blk_fs_request(rq))
701 expiry = ide_cd_expiry;
704 hwif->expiry = expiry;
705 ide_set_handler(drive, cdrom_newpc_intr, timeout);
709 if (blk_pc_request(rq) && rc == 0) {
710 unsigned int dlen = rq->data_len;
714 if (blk_end_request(rq, 0, dlen))
719 if (sense && uptodate)
720 ide_cd_complete_failed_rq(drive, rq);
722 if (blk_fs_request(rq)) {
726 if (uptodate <= 0 && rq->errors == 0)
731 ide_cd_error_cmd(drive, cmd);
733 /* make sure it's fully ended */
734 if (blk_pc_request(rq))
735 nsectors = (rq->data_len + 511) >> 9;
737 nsectors = rq->hard_nr_sectors;
742 if (blk_fs_request(rq) == 0) {
743 rq->data_len -= (cmd->nbytes - cmd->nleft);
744 if (uptodate == 0 && (cmd->tf_flags & IDE_TFLAG_WRITE))
745 rq->data_len += cmd->last_xfer_len;
748 ide_complete_rq(drive, uptodate ? 0 : -EIO, nsectors << 9);
750 if (sense && rc == 2)
751 ide_error(drive, "request sense failure", stat);
756 static ide_startstop_t cdrom_start_rw(ide_drive_t *drive, struct request *rq)
758 struct cdrom_info *cd = drive->driver_data;
759 struct request_queue *q = drive->queue;
760 int write = rq_data_dir(rq) == WRITE;
761 unsigned short sectors_per_frame =
762 queue_hardsect_size(q) >> SECTOR_BITS;
764 ide_debug_log(IDE_DBG_RQ, "rq->cmd[0]: 0x%x, rq->cmd_flags: 0x%x, "
765 "secs_per_frame: %u",
766 rq->cmd[0], rq->cmd_flags, sectors_per_frame);
769 /* disk has become write protected */
770 if (get_disk_ro(cd->disk))
774 * We may be retrying this request after an error. Fix up any
775 * weirdness which might be present in the request packet.
777 q->prep_rq_fn(q, rq);
780 /* fs requests *must* be hardware frame aligned */
781 if ((rq->nr_sectors & (sectors_per_frame - 1)) ||
782 (rq->sector & (sectors_per_frame - 1)))
785 /* use DMA, if possible */
786 drive->dma = !!(drive->dev_flags & IDE_DFLAG_USING_DMA);
789 cd->devinfo.media_written = 1;
791 rq->timeout = ATAPI_WAIT_PC;
796 static void cdrom_do_block_pc(ide_drive_t *drive, struct request *rq)
799 ide_debug_log(IDE_DBG_PC, "rq->cmd[0]: 0x%x, rq->cmd_type: 0x%x",
800 rq->cmd[0], rq->cmd_type);
802 if (blk_pc_request(rq))
803 rq->cmd_flags |= REQ_QUIET;
805 rq->cmd_flags &= ~REQ_FAILED;
811 struct request_queue *q = drive->queue;
812 char *buf = bio_data(rq->bio);
813 unsigned int alignment;
815 drive->dma = !!(drive->dev_flags & IDE_DFLAG_USING_DMA);
818 * check if dma is safe
820 * NOTE! The "len" and "addr" checks should possibly have
823 alignment = queue_dma_alignment(q) | q->dma_pad_mask;
824 if ((unsigned long)buf & alignment
825 || rq->data_len & q->dma_pad_mask
826 || object_is_on_stack(buf))
831 static ide_startstop_t ide_cd_do_request(ide_drive_t *drive, struct request *rq,
835 int uptodate = 0, nsectors;
837 ide_debug_log(IDE_DBG_RQ, "cmd: 0x%x, block: %llu",
838 rq->cmd[0], (unsigned long long)block);
840 if (drive->debug_mask & IDE_DBG_RQ)
841 blk_dump_rq_flags(rq, "ide_cd_do_request");
843 if (blk_fs_request(rq)) {
844 if (cdrom_start_rw(drive, rq) == ide_stopped)
846 } else if (blk_sense_request(rq) || blk_pc_request(rq) ||
847 rq->cmd_type == REQ_TYPE_ATA_PC) {
849 rq->timeout = ATAPI_WAIT_PC;
851 cdrom_do_block_pc(drive, rq);
852 } else if (blk_special_request(rq)) {
853 /* right now this can only be a reset... */
857 blk_dump_rq_flags(rq, DRV_NAME " bad flags");
863 /* prepare sense request for this command */
864 ide_prep_sense(drive, rq);
866 memset(&cmd, 0, sizeof(cmd));
869 cmd.tf_flags |= IDE_TFLAG_WRITE;
873 if (blk_fs_request(rq) || rq->data_len) {
874 ide_init_sg_cmd(&cmd, blk_fs_request(rq) ? (rq->nr_sectors << 9)
876 ide_map_sg(drive, &cmd);
879 return ide_issue_pc(drive, &cmd);
881 nsectors = rq->hard_nr_sectors;
886 ide_complete_rq(drive, uptodate ? 0 : -EIO, nsectors << 9);
894 * Routines which queue packet commands take as a final argument a pointer to a
895 * request_sense struct. If execution of the command results in an error with a
896 * CHECK CONDITION status, this structure will be filled with the results of the
897 * subsequent request sense command. The pointer can also be NULL, in which case
898 * no sense information is returned.
900 static void msf_from_bcd(struct atapi_msf *msf)
902 msf->minute = bcd2bin(msf->minute);
903 msf->second = bcd2bin(msf->second);
904 msf->frame = bcd2bin(msf->frame);
907 int cdrom_check_status(ide_drive_t *drive, struct request_sense *sense)
909 struct cdrom_info *info = drive->driver_data;
910 struct cdrom_device_info *cdi = &info->devinfo;
911 unsigned char cmd[BLK_MAX_CDB];
913 ide_debug_log(IDE_DBG_FUNC, "enter");
915 memset(cmd, 0, BLK_MAX_CDB);
916 cmd[0] = GPCMD_TEST_UNIT_READY;
919 * Sanyo 3 CD changer uses byte 7 of TEST_UNIT_READY to switch CDs
920 * instead of supporting the LOAD_UNLOAD opcode.
922 cmd[7] = cdi->sanyo_slot % 3;
924 return ide_cd_queue_pc(drive, cmd, 0, NULL, NULL, sense, 0, REQ_QUIET);
927 static int cdrom_read_capacity(ide_drive_t *drive, unsigned long *capacity,
928 unsigned long *sectors_per_frame,
929 struct request_sense *sense)
937 unsigned char cmd[BLK_MAX_CDB];
938 unsigned len = sizeof(capbuf);
941 ide_debug_log(IDE_DBG_FUNC, "enter");
943 memset(cmd, 0, BLK_MAX_CDB);
944 cmd[0] = GPCMD_READ_CDVD_CAPACITY;
946 stat = ide_cd_queue_pc(drive, cmd, 0, &capbuf, &len, sense, 0,
952 * Sanity check the given block size
954 blocklen = be32_to_cpu(capbuf.blocklen);
962 printk(KERN_ERR PFX "%s: weird block size %u\n",
963 drive->name, blocklen);
964 printk(KERN_ERR PFX "%s: default to 2kb block size\n",
970 *capacity = 1 + be32_to_cpu(capbuf.lba);
971 *sectors_per_frame = blocklen >> SECTOR_BITS;
973 ide_debug_log(IDE_DBG_PROBE, "cap: %lu, sectors_per_frame: %lu",
974 *capacity, *sectors_per_frame);
979 static int cdrom_read_tocentry(ide_drive_t *drive, int trackno, int msf_flag,
980 int format, char *buf, int buflen,
981 struct request_sense *sense)
983 unsigned char cmd[BLK_MAX_CDB];
985 ide_debug_log(IDE_DBG_FUNC, "enter");
987 memset(cmd, 0, BLK_MAX_CDB);
989 cmd[0] = GPCMD_READ_TOC_PMA_ATIP;
991 cmd[7] = (buflen >> 8);
992 cmd[8] = (buflen & 0xff);
993 cmd[9] = (format << 6);
998 return ide_cd_queue_pc(drive, cmd, 0, buf, &buflen, sense, 0, REQ_QUIET);
1001 /* Try to read the entire TOC for the disk into our internal buffer. */
1002 int ide_cd_read_toc(ide_drive_t *drive, struct request_sense *sense)
1004 int stat, ntracks, i;
1005 struct cdrom_info *info = drive->driver_data;
1006 struct cdrom_device_info *cdi = &info->devinfo;
1007 struct atapi_toc *toc = info->toc;
1009 struct atapi_toc_header hdr;
1010 struct atapi_toc_entry ent;
1013 unsigned long sectors_per_frame = SECTORS_PER_FRAME;
1015 ide_debug_log(IDE_DBG_FUNC, "enter");
1018 /* try to allocate space */
1019 toc = kmalloc(sizeof(struct atapi_toc), GFP_KERNEL);
1021 printk(KERN_ERR PFX "%s: No cdrom TOC buffer!\n",
1029 * Check to see if the existing data is still valid. If it is,
1032 (void) cdrom_check_status(drive, sense);
1034 if (drive->atapi_flags & IDE_AFLAG_TOC_VALID)
1037 /* try to get the total cdrom capacity and sector size */
1038 stat = cdrom_read_capacity(drive, &toc->capacity, §ors_per_frame,
1041 toc->capacity = 0x1fffff;
1043 set_capacity(info->disk, toc->capacity * sectors_per_frame);
1044 /* save a private copy of the TOC capacity for error handling */
1045 drive->probed_capacity = toc->capacity * sectors_per_frame;
1047 blk_queue_hardsect_size(drive->queue,
1048 sectors_per_frame << SECTOR_BITS);
1050 /* first read just the header, so we know how long the TOC is */
1051 stat = cdrom_read_tocentry(drive, 0, 1, 0, (char *) &toc->hdr,
1052 sizeof(struct atapi_toc_header), sense);
1056 if (drive->atapi_flags & IDE_AFLAG_TOCTRACKS_AS_BCD) {
1057 toc->hdr.first_track = bcd2bin(toc->hdr.first_track);
1058 toc->hdr.last_track = bcd2bin(toc->hdr.last_track);
1061 ntracks = toc->hdr.last_track - toc->hdr.first_track + 1;
1064 if (ntracks > MAX_TRACKS)
1065 ntracks = MAX_TRACKS;
1067 /* now read the whole schmeer */
1068 stat = cdrom_read_tocentry(drive, toc->hdr.first_track, 1, 0,
1070 sizeof(struct atapi_toc_header) +
1072 sizeof(struct atapi_toc_entry), sense);
1074 if (stat && toc->hdr.first_track > 1) {
1076 * Cds with CDI tracks only don't have any TOC entries, despite
1077 * of this the returned values are
1078 * first_track == last_track = number of CDI tracks + 1,
1079 * so that this case is indistinguishable from the same layout
1080 * plus an additional audio track. If we get an error for the
1081 * regular case, we assume a CDI without additional audio
1082 * tracks. In this case the readable TOC is empty (CDI tracks
1083 * are not included) and only holds the Leadout entry.
1088 stat = cdrom_read_tocentry(drive, CDROM_LEADOUT, 1, 0,
1090 sizeof(struct atapi_toc_header) +
1092 sizeof(struct atapi_toc_entry),
1097 if (drive->atapi_flags & IDE_AFLAG_TOCTRACKS_AS_BCD) {
1098 toc->hdr.first_track = (u8)bin2bcd(CDROM_LEADOUT);
1099 toc->hdr.last_track = (u8)bin2bcd(CDROM_LEADOUT);
1101 toc->hdr.first_track = CDROM_LEADOUT;
1102 toc->hdr.last_track = CDROM_LEADOUT;
1109 toc->hdr.toc_length = be16_to_cpu(toc->hdr.toc_length);
1111 if (drive->atapi_flags & IDE_AFLAG_TOCTRACKS_AS_BCD) {
1112 toc->hdr.first_track = bcd2bin(toc->hdr.first_track);
1113 toc->hdr.last_track = bcd2bin(toc->hdr.last_track);
1116 for (i = 0; i <= ntracks; i++) {
1117 if (drive->atapi_flags & IDE_AFLAG_TOCADDR_AS_BCD) {
1118 if (drive->atapi_flags & IDE_AFLAG_TOCTRACKS_AS_BCD)
1119 toc->ent[i].track = bcd2bin(toc->ent[i].track);
1120 msf_from_bcd(&toc->ent[i].addr.msf);
1122 toc->ent[i].addr.lba = msf_to_lba(toc->ent[i].addr.msf.minute,
1123 toc->ent[i].addr.msf.second,
1124 toc->ent[i].addr.msf.frame);
1127 if (toc->hdr.first_track != CDROM_LEADOUT) {
1128 /* read the multisession information */
1129 stat = cdrom_read_tocentry(drive, 0, 0, 1, (char *)&ms_tmp,
1130 sizeof(ms_tmp), sense);
1134 toc->last_session_lba = be32_to_cpu(ms_tmp.ent.addr.lba);
1136 ms_tmp.hdr.last_track = CDROM_LEADOUT;
1137 ms_tmp.hdr.first_track = ms_tmp.hdr.last_track;
1138 toc->last_session_lba = msf_to_lba(0, 2, 0); /* 0m 2s 0f */
1141 if (drive->atapi_flags & IDE_AFLAG_TOCADDR_AS_BCD) {
1142 /* re-read multisession information using MSF format */
1143 stat = cdrom_read_tocentry(drive, 0, 1, 1, (char *)&ms_tmp,
1144 sizeof(ms_tmp), sense);
1148 msf_from_bcd(&ms_tmp.ent.addr.msf);
1149 toc->last_session_lba = msf_to_lba(ms_tmp.ent.addr.msf.minute,
1150 ms_tmp.ent.addr.msf.second,
1151 ms_tmp.ent.addr.msf.frame);
1154 toc->xa_flag = (ms_tmp.hdr.first_track != ms_tmp.hdr.last_track);
1156 /* now try to get the total cdrom capacity */
1157 stat = cdrom_get_last_written(cdi, &last_written);
1158 if (!stat && (last_written > toc->capacity)) {
1159 toc->capacity = last_written;
1160 set_capacity(info->disk, toc->capacity * sectors_per_frame);
1161 drive->probed_capacity = toc->capacity * sectors_per_frame;
1164 /* Remember that we've read this stuff. */
1165 drive->atapi_flags |= IDE_AFLAG_TOC_VALID;
1170 int ide_cdrom_get_capabilities(ide_drive_t *drive, u8 *buf)
1172 struct cdrom_info *info = drive->driver_data;
1173 struct cdrom_device_info *cdi = &info->devinfo;
1174 struct packet_command cgc;
1175 int stat, attempts = 3, size = ATAPI_CAPABILITIES_PAGE_SIZE;
1177 ide_debug_log(IDE_DBG_FUNC, "enter");
1179 if ((drive->atapi_flags & IDE_AFLAG_FULL_CAPS_PAGE) == 0)
1180 size -= ATAPI_CAPABILITIES_PAGE_PAD_SIZE;
1182 init_cdrom_command(&cgc, buf, size, CGC_DATA_UNKNOWN);
1184 /* we seem to get stat=0x01,err=0x00 the first time (??) */
1185 stat = cdrom_mode_sense(cdi, &cgc, GPMODE_CAPABILITIES_PAGE, 0);
1188 } while (--attempts);
1192 void ide_cdrom_update_speed(ide_drive_t *drive, u8 *buf)
1194 struct cdrom_info *cd = drive->driver_data;
1195 u16 curspeed, maxspeed;
1197 ide_debug_log(IDE_DBG_FUNC, "enter");
1199 if (drive->atapi_flags & IDE_AFLAG_LE_SPEED_FIELDS) {
1200 curspeed = le16_to_cpup((__le16 *)&buf[8 + 14]);
1201 maxspeed = le16_to_cpup((__le16 *)&buf[8 + 8]);
1203 curspeed = be16_to_cpup((__be16 *)&buf[8 + 14]);
1204 maxspeed = be16_to_cpup((__be16 *)&buf[8 + 8]);
1207 ide_debug_log(IDE_DBG_PROBE, "curspeed: %u, maxspeed: %u",
1208 curspeed, maxspeed);
1210 cd->current_speed = (curspeed + (176/2)) / 176;
1211 cd->max_speed = (maxspeed + (176/2)) / 176;
1214 #define IDE_CD_CAPABILITIES \
1215 (CDC_CLOSE_TRAY | CDC_OPEN_TRAY | CDC_LOCK | CDC_SELECT_SPEED | \
1216 CDC_SELECT_DISC | CDC_MULTI_SESSION | CDC_MCN | CDC_MEDIA_CHANGED | \
1217 CDC_PLAY_AUDIO | CDC_RESET | CDC_DRIVE_STATUS | CDC_CD_R | \
1218 CDC_CD_RW | CDC_DVD | CDC_DVD_R | CDC_DVD_RAM | CDC_GENERIC_PACKET | \
1219 CDC_MO_DRIVE | CDC_MRW | CDC_MRW_W | CDC_RAM)
1221 static struct cdrom_device_ops ide_cdrom_dops = {
1222 .open = ide_cdrom_open_real,
1223 .release = ide_cdrom_release_real,
1224 .drive_status = ide_cdrom_drive_status,
1225 .media_changed = ide_cdrom_check_media_change_real,
1226 .tray_move = ide_cdrom_tray_move,
1227 .lock_door = ide_cdrom_lock_door,
1228 .select_speed = ide_cdrom_select_speed,
1229 .get_last_session = ide_cdrom_get_last_session,
1230 .get_mcn = ide_cdrom_get_mcn,
1231 .reset = ide_cdrom_reset,
1232 .audio_ioctl = ide_cdrom_audio_ioctl,
1233 .capability = IDE_CD_CAPABILITIES,
1234 .generic_packet = ide_cdrom_packet,
1237 static int ide_cdrom_register(ide_drive_t *drive, int nslots)
1239 struct cdrom_info *info = drive->driver_data;
1240 struct cdrom_device_info *devinfo = &info->devinfo;
1242 ide_debug_log(IDE_DBG_PROBE, "nslots: %d", nslots);
1244 devinfo->ops = &ide_cdrom_dops;
1245 devinfo->speed = info->current_speed;
1246 devinfo->capacity = nslots;
1247 devinfo->handle = drive;
1248 strcpy(devinfo->name, drive->name);
1250 if (drive->atapi_flags & IDE_AFLAG_NO_SPEED_SELECT)
1251 devinfo->mask |= CDC_SELECT_SPEED;
1253 devinfo->disk = info->disk;
1254 return register_cdrom(devinfo);
1257 static int ide_cdrom_probe_capabilities(ide_drive_t *drive)
1259 struct cdrom_info *cd = drive->driver_data;
1260 struct cdrom_device_info *cdi = &cd->devinfo;
1261 u8 buf[ATAPI_CAPABILITIES_PAGE_SIZE];
1262 mechtype_t mechtype;
1265 ide_debug_log(IDE_DBG_PROBE, "media: 0x%x, atapi_flags: 0x%lx",
1266 drive->media, drive->atapi_flags);
1268 cdi->mask = (CDC_CD_R | CDC_CD_RW | CDC_DVD | CDC_DVD_R |
1269 CDC_DVD_RAM | CDC_SELECT_DISC | CDC_PLAY_AUDIO |
1270 CDC_MO_DRIVE | CDC_RAM);
1272 if (drive->media == ide_optical) {
1273 cdi->mask &= ~(CDC_MO_DRIVE | CDC_RAM);
1274 printk(KERN_ERR PFX "%s: ATAPI magneto-optical drive\n",
1279 if (drive->atapi_flags & IDE_AFLAG_PRE_ATAPI12) {
1280 drive->atapi_flags &= ~IDE_AFLAG_NO_EJECT;
1281 cdi->mask &= ~CDC_PLAY_AUDIO;
1286 * We have to cheat a little here. the packet will eventually be queued
1287 * with ide_cdrom_packet(), which extracts the drive from cdi->handle.
1288 * Since this device hasn't been registered with the Uniform layer yet,
1289 * it can't do this. Same goes for cdi->ops.
1291 cdi->handle = drive;
1292 cdi->ops = &ide_cdrom_dops;
1294 if (ide_cdrom_get_capabilities(drive, buf))
1297 if ((buf[8 + 6] & 0x01) == 0)
1298 drive->dev_flags &= ~IDE_DFLAG_DOORLOCKING;
1299 if (buf[8 + 6] & 0x08)
1300 drive->atapi_flags &= ~IDE_AFLAG_NO_EJECT;
1301 if (buf[8 + 3] & 0x01)
1302 cdi->mask &= ~CDC_CD_R;
1303 if (buf[8 + 3] & 0x02)
1304 cdi->mask &= ~(CDC_CD_RW | CDC_RAM);
1305 if (buf[8 + 2] & 0x38)
1306 cdi->mask &= ~CDC_DVD;
1307 if (buf[8 + 3] & 0x20)
1308 cdi->mask &= ~(CDC_DVD_RAM | CDC_RAM);
1309 if (buf[8 + 3] & 0x10)
1310 cdi->mask &= ~CDC_DVD_R;
1311 if ((buf[8 + 4] & 0x01) || (drive->atapi_flags & IDE_AFLAG_PLAY_AUDIO_OK))
1312 cdi->mask &= ~CDC_PLAY_AUDIO;
1314 mechtype = buf[8 + 6] >> 5;
1315 if (mechtype == mechtype_caddy ||
1316 mechtype == mechtype_popup ||
1317 (drive->atapi_flags & IDE_AFLAG_NO_AUTOCLOSE))
1318 cdi->mask |= CDC_CLOSE_TRAY;
1320 if (cdi->sanyo_slot > 0) {
1321 cdi->mask &= ~CDC_SELECT_DISC;
1323 } else if (mechtype == mechtype_individual_changer ||
1324 mechtype == mechtype_cartridge_changer) {
1325 nslots = cdrom_number_of_slots(cdi);
1327 cdi->mask &= ~CDC_SELECT_DISC;
1330 ide_cdrom_update_speed(drive, buf);
1332 printk(KERN_INFO PFX "%s: ATAPI", drive->name);
1334 /* don't print speed if the drive reported 0 */
1336 printk(KERN_CONT " %dX", cd->max_speed);
1338 printk(KERN_CONT " %s", (cdi->mask & CDC_DVD) ? "CD-ROM" : "DVD-ROM");
1340 if ((cdi->mask & CDC_DVD_R) == 0 || (cdi->mask & CDC_DVD_RAM) == 0)
1341 printk(KERN_CONT " DVD%s%s",
1342 (cdi->mask & CDC_DVD_R) ? "" : "-R",
1343 (cdi->mask & CDC_DVD_RAM) ? "" : "/RAM");
1345 if ((cdi->mask & CDC_CD_R) == 0 || (cdi->mask & CDC_CD_RW) == 0)
1346 printk(KERN_CONT " CD%s%s",
1347 (cdi->mask & CDC_CD_R) ? "" : "-R",
1348 (cdi->mask & CDC_CD_RW) ? "" : "/RW");
1350 if ((cdi->mask & CDC_SELECT_DISC) == 0)
1351 printk(KERN_CONT " changer w/%d slots", nslots);
1353 printk(KERN_CONT " drive");
1355 printk(KERN_CONT ", %dkB Cache\n",
1356 be16_to_cpup((__be16 *)&buf[8 + 12]));
1361 /* standard prep_rq_fn that builds 10 byte cmds */
1362 static int ide_cdrom_prep_fs(struct request_queue *q, struct request *rq)
1364 int hard_sect = queue_hardsect_size(q);
1365 long block = (long)rq->hard_sector / (hard_sect >> 9);
1366 unsigned long blocks = rq->hard_nr_sectors / (hard_sect >> 9);
1368 memset(rq->cmd, 0, BLK_MAX_CDB);
1370 if (rq_data_dir(rq) == READ)
1371 rq->cmd[0] = GPCMD_READ_10;
1373 rq->cmd[0] = GPCMD_WRITE_10;
1378 rq->cmd[2] = (block >> 24) & 0xff;
1379 rq->cmd[3] = (block >> 16) & 0xff;
1380 rq->cmd[4] = (block >> 8) & 0xff;
1381 rq->cmd[5] = block & 0xff;
1384 * and transfer length
1386 rq->cmd[7] = (blocks >> 8) & 0xff;
1387 rq->cmd[8] = blocks & 0xff;
1393 * Most of the SCSI commands are supported directly by ATAPI devices.
1394 * This transform handles the few exceptions.
1396 static int ide_cdrom_prep_pc(struct request *rq)
1400 /* transform 6-byte read/write commands to the 10-byte version */
1401 if (c[0] == READ_6 || c[0] == WRITE_6) {
1408 c[0] += (READ_10 - READ_6);
1414 * it's silly to pretend we understand 6-byte sense commands, just
1415 * reject with ILLEGAL_REQUEST and the caller should take the
1416 * appropriate action
1418 if (c[0] == MODE_SENSE || c[0] == MODE_SELECT) {
1419 rq->errors = ILLEGAL_REQUEST;
1420 return BLKPREP_KILL;
1426 static int ide_cdrom_prep_fn(struct request_queue *q, struct request *rq)
1428 if (blk_fs_request(rq))
1429 return ide_cdrom_prep_fs(q, rq);
1430 else if (blk_pc_request(rq))
1431 return ide_cdrom_prep_pc(rq);
1436 struct cd_list_entry {
1437 const char *id_model;
1438 const char *id_firmware;
1439 unsigned int cd_flags;
1442 #ifdef CONFIG_IDE_PROC_FS
1443 static sector_t ide_cdrom_capacity(ide_drive_t *drive)
1445 unsigned long capacity, sectors_per_frame;
1447 if (cdrom_read_capacity(drive, &capacity, §ors_per_frame, NULL))
1450 return capacity * sectors_per_frame;
1453 static int proc_idecd_read_capacity(char *page, char **start, off_t off,
1454 int count, int *eof, void *data)
1456 ide_drive_t *drive = data;
1459 len = sprintf(page, "%llu\n", (long long)ide_cdrom_capacity(drive));
1460 PROC_IDE_READ_RETURN(page, start, off, count, eof, len);
1463 static ide_proc_entry_t idecd_proc[] = {
1464 { "capacity", S_IFREG|S_IRUGO, proc_idecd_read_capacity, NULL },
1465 { NULL, 0, NULL, NULL }
1468 static ide_proc_entry_t *ide_cd_proc_entries(ide_drive_t *drive)
1473 static const struct ide_proc_devset *ide_cd_proc_devsets(ide_drive_t *drive)
1479 static const struct cd_list_entry ide_cd_quirks_list[] = {
1480 /* SCR-3231 doesn't support the SET_CD_SPEED command. */
1481 { "SAMSUNG CD-ROM SCR-3231", NULL, IDE_AFLAG_NO_SPEED_SELECT },
1482 /* Old NEC260 (not R) was released before ATAPI 1.2 spec. */
1483 { "NEC CD-ROM DRIVE:260", "1.01", IDE_AFLAG_TOCADDR_AS_BCD |
1484 IDE_AFLAG_PRE_ATAPI12, },
1485 /* Vertos 300, some versions of this drive like to talk BCD. */
1486 { "V003S0DS", NULL, IDE_AFLAG_VERTOS_300_SSD, },
1487 /* Vertos 600 ESD. */
1488 { "V006E0DS", NULL, IDE_AFLAG_VERTOS_600_ESD, },
1490 * Sanyo 3 CD changer uses a non-standard command for CD changing
1491 * (by default standard ATAPI support for CD changers is used).
1493 { "CD-ROM CDR-C3 G", NULL, IDE_AFLAG_SANYO_3CD },
1494 { "CD-ROM CDR-C3G", NULL, IDE_AFLAG_SANYO_3CD },
1495 { "CD-ROM CDR_C36", NULL, IDE_AFLAG_SANYO_3CD },
1496 /* Stingray 8X CD-ROM. */
1497 { "STINGRAY 8422 IDE 8X CD-ROM 7-27-95", NULL, IDE_AFLAG_PRE_ATAPI12 },
1499 * ACER 50X CD-ROM and WPI 32X CD-ROM require the full spec length
1500 * mode sense page capabilities size, but older drives break.
1502 { "ATAPI CD ROM DRIVE 50X MAX", NULL, IDE_AFLAG_FULL_CAPS_PAGE },
1503 { "WPI CDS-32X", NULL, IDE_AFLAG_FULL_CAPS_PAGE },
1504 /* ACER/AOpen 24X CD-ROM has the speed fields byte-swapped. */
1505 { "", "241N", IDE_AFLAG_LE_SPEED_FIELDS },
1507 * Some drives used by Apple don't advertise audio play
1508 * but they do support reading TOC & audio datas.
1510 { "MATSHITADVD-ROM SR-8187", NULL, IDE_AFLAG_PLAY_AUDIO_OK },
1511 { "MATSHITADVD-ROM SR-8186", NULL, IDE_AFLAG_PLAY_AUDIO_OK },
1512 { "MATSHITADVD-ROM SR-8176", NULL, IDE_AFLAG_PLAY_AUDIO_OK },
1513 { "MATSHITADVD-ROM SR-8174", NULL, IDE_AFLAG_PLAY_AUDIO_OK },
1514 { "Optiarc DVD RW AD-5200A", NULL, IDE_AFLAG_PLAY_AUDIO_OK },
1515 { "Optiarc DVD RW AD-7200A", NULL, IDE_AFLAG_PLAY_AUDIO_OK },
1516 { "Optiarc DVD RW AD-7543A", NULL, IDE_AFLAG_NO_AUTOCLOSE },
1517 { "TEAC CD-ROM CD-224E", NULL, IDE_AFLAG_NO_AUTOCLOSE },
1521 static unsigned int ide_cd_flags(u16 *id)
1523 const struct cd_list_entry *cle = ide_cd_quirks_list;
1525 while (cle->id_model) {
1526 if (strcmp(cle->id_model, (char *)&id[ATA_ID_PROD]) == 0 &&
1527 (cle->id_firmware == NULL ||
1528 strstr((char *)&id[ATA_ID_FW_REV], cle->id_firmware)))
1529 return cle->cd_flags;
1536 static int ide_cdrom_setup(ide_drive_t *drive)
1538 struct cdrom_info *cd = drive->driver_data;
1539 struct cdrom_device_info *cdi = &cd->devinfo;
1540 struct request_queue *q = drive->queue;
1541 u16 *id = drive->id;
1542 char *fw_rev = (char *)&id[ATA_ID_FW_REV];
1545 ide_debug_log(IDE_DBG_PROBE, "enter");
1547 blk_queue_prep_rq(q, ide_cdrom_prep_fn);
1548 blk_queue_dma_alignment(q, 31);
1549 blk_queue_update_dma_pad(q, 15);
1551 q->unplug_delay = max((1 * HZ) / 1000, 1);
1553 drive->dev_flags |= IDE_DFLAG_MEDIA_CHANGED;
1554 drive->atapi_flags = IDE_AFLAG_NO_EJECT | ide_cd_flags(id);
1556 if ((drive->atapi_flags & IDE_AFLAG_VERTOS_300_SSD) &&
1557 fw_rev[4] == '1' && fw_rev[6] <= '2')
1558 drive->atapi_flags |= (IDE_AFLAG_TOCTRACKS_AS_BCD |
1559 IDE_AFLAG_TOCADDR_AS_BCD);
1560 else if ((drive->atapi_flags & IDE_AFLAG_VERTOS_600_ESD) &&
1561 fw_rev[4] == '1' && fw_rev[6] <= '2')
1562 drive->atapi_flags |= IDE_AFLAG_TOCTRACKS_AS_BCD;
1563 else if (drive->atapi_flags & IDE_AFLAG_SANYO_3CD)
1564 /* 3 => use CD in slot 0 */
1565 cdi->sanyo_slot = 3;
1567 nslots = ide_cdrom_probe_capabilities(drive);
1569 blk_queue_hardsect_size(q, CD_FRAMESIZE);
1571 if (ide_cdrom_register(drive, nslots)) {
1572 printk(KERN_ERR PFX "%s: %s failed to register device with the"
1573 " cdrom driver.\n", drive->name, __func__);
1574 cd->devinfo.handle = NULL;
1578 ide_proc_register_driver(drive, cd->driver);
1582 static void ide_cd_remove(ide_drive_t *drive)
1584 struct cdrom_info *info = drive->driver_data;
1586 ide_debug_log(IDE_DBG_FUNC, "enter");
1588 ide_proc_unregister_driver(drive, info->driver);
1589 device_del(&info->dev);
1590 del_gendisk(info->disk);
1592 mutex_lock(&idecd_ref_mutex);
1593 put_device(&info->dev);
1594 mutex_unlock(&idecd_ref_mutex);
1597 static void ide_cd_release(struct device *dev)
1599 struct cdrom_info *info = to_ide_drv(dev, cdrom_info);
1600 struct cdrom_device_info *devinfo = &info->devinfo;
1601 ide_drive_t *drive = info->drive;
1602 struct gendisk *g = info->disk;
1604 ide_debug_log(IDE_DBG_FUNC, "enter");
1607 if (devinfo->handle == drive)
1608 unregister_cdrom(devinfo);
1609 drive->driver_data = NULL;
1610 blk_queue_prep_rq(drive->queue, NULL);
1611 g->private_data = NULL;
1616 static int ide_cd_probe(ide_drive_t *);
1618 static struct ide_driver ide_cdrom_driver = {
1620 .owner = THIS_MODULE,
1621 .name = "ide-cdrom",
1622 .bus = &ide_bus_type,
1624 .probe = ide_cd_probe,
1625 .remove = ide_cd_remove,
1626 .version = IDECD_VERSION,
1627 .do_request = ide_cd_do_request,
1628 #ifdef CONFIG_IDE_PROC_FS
1629 .proc_entries = ide_cd_proc_entries,
1630 .proc_devsets = ide_cd_proc_devsets,
1634 static int idecd_open(struct block_device *bdev, fmode_t mode)
1636 struct cdrom_info *info = ide_cd_get(bdev->bd_disk);
1642 rc = cdrom_open(&info->devinfo, bdev, mode);
1650 static int idecd_release(struct gendisk *disk, fmode_t mode)
1652 struct cdrom_info *info = ide_drv_g(disk, cdrom_info);
1654 cdrom_release(&info->devinfo, mode);
1661 static int idecd_set_spindown(struct cdrom_device_info *cdi, unsigned long arg)
1663 struct packet_command cgc;
1668 if (copy_from_user(&spindown, (void __user *)arg, sizeof(char)))
1671 init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_UNKNOWN);
1673 stat = cdrom_mode_sense(cdi, &cgc, GPMODE_CDROM_PAGE, 0);
1677 buffer[11] = (buffer[11] & 0xf0) | (spindown & 0x0f);
1678 return cdrom_mode_select(cdi, &cgc);
1681 static int idecd_get_spindown(struct cdrom_device_info *cdi, unsigned long arg)
1683 struct packet_command cgc;
1688 init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_UNKNOWN);
1690 stat = cdrom_mode_sense(cdi, &cgc, GPMODE_CDROM_PAGE, 0);
1694 spindown = buffer[11] & 0x0f;
1695 if (copy_to_user((void __user *)arg, &spindown, sizeof(char)))
1700 static int idecd_ioctl(struct block_device *bdev, fmode_t mode,
1701 unsigned int cmd, unsigned long arg)
1703 struct cdrom_info *info = ide_drv_g(bdev->bd_disk, cdrom_info);
1707 case CDROMSETSPINDOWN:
1708 return idecd_set_spindown(&info->devinfo, arg);
1709 case CDROMGETSPINDOWN:
1710 return idecd_get_spindown(&info->devinfo, arg);
1715 err = generic_ide_ioctl(info->drive, bdev, cmd, arg);
1717 err = cdrom_ioctl(&info->devinfo, bdev, mode, cmd, arg);
1722 static int idecd_media_changed(struct gendisk *disk)
1724 struct cdrom_info *info = ide_drv_g(disk, cdrom_info);
1725 return cdrom_media_changed(&info->devinfo);
1728 static int idecd_revalidate_disk(struct gendisk *disk)
1730 struct cdrom_info *info = ide_drv_g(disk, cdrom_info);
1731 struct request_sense sense;
1733 ide_cd_read_toc(info->drive, &sense);
1738 static struct block_device_operations idecd_ops = {
1739 .owner = THIS_MODULE,
1741 .release = idecd_release,
1742 .locked_ioctl = idecd_ioctl,
1743 .media_changed = idecd_media_changed,
1744 .revalidate_disk = idecd_revalidate_disk
1747 /* module options */
1748 static unsigned long debug_mask;
1749 module_param(debug_mask, ulong, 0644);
1751 MODULE_DESCRIPTION("ATAPI CD-ROM Driver");
1753 static int ide_cd_probe(ide_drive_t *drive)
1755 struct cdrom_info *info;
1757 struct request_sense sense;
1759 ide_debug_log(IDE_DBG_PROBE, "driver_req: %s, media: 0x%x",
1760 drive->driver_req, drive->media);
1762 if (!strstr("ide-cdrom", drive->driver_req))
1765 if (drive->media != ide_cdrom && drive->media != ide_optical)
1768 drive->debug_mask = debug_mask;
1769 drive->irq_handler = cdrom_newpc_intr;
1771 info = kzalloc(sizeof(struct cdrom_info), GFP_KERNEL);
1773 printk(KERN_ERR PFX "%s: Can't allocate a cdrom structure\n",
1778 g = alloc_disk(1 << PARTN_BITS);
1782 ide_init_disk(g, drive);
1784 info->dev.parent = &drive->gendev;
1785 info->dev.release = ide_cd_release;
1786 dev_set_name(&info->dev, dev_name(&drive->gendev));
1788 if (device_register(&info->dev))
1791 info->drive = drive;
1792 info->driver = &ide_cdrom_driver;
1795 g->private_data = &info->driver;
1797 drive->driver_data = info;
1800 g->driverfs_dev = &drive->gendev;
1801 g->flags = GENHD_FL_CD | GENHD_FL_REMOVABLE;
1802 if (ide_cdrom_setup(drive)) {
1803 put_device(&info->dev);
1807 ide_cd_read_toc(drive, &sense);
1808 g->fops = &idecd_ops;
1809 g->flags |= GENHD_FL_REMOVABLE;
1821 static void __exit ide_cdrom_exit(void)
1823 driver_unregister(&ide_cdrom_driver.gen_driver);
1826 static int __init ide_cdrom_init(void)
1828 printk(KERN_INFO DRV_NAME " driver " IDECD_VERSION "\n");
1829 return driver_register(&ide_cdrom_driver.gen_driver);
1832 MODULE_ALIAS("ide:*m-cdrom*");
1833 MODULE_ALIAS("ide-cd");
1834 module_init(ide_cdrom_init);
1835 module_exit(ide_cdrom_exit);
1836 MODULE_LICENSE("GPL");