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 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 * Allow the drive 5 seconds to recover; some devices will return NOT_READY
271 * while flushing data from cache.
273 * returns: 0 failed (write timeout expired)
276 static int ide_cd_breathe(ide_drive_t *drive, struct request *rq)
279 struct cdrom_info *info = drive->driver_data;
282 info->write_timeout = jiffies + ATAPI_WAIT_WRITE_BUSY;
286 if (time_after(jiffies, info->write_timeout))
289 struct request_queue *q = drive->queue;
293 * take a breather relying on the unplug timer to kick us again
296 spin_lock_irqsave(q->queue_lock, flags);
298 spin_unlock_irqrestore(q->queue_lock, flags);
306 * 0: if the request should be continued.
307 * 1: if the request will be going through error recovery.
308 * 2: if the request should be ended.
310 static int cdrom_decode_status(ide_drive_t *drive, u8 stat)
312 ide_hwif_t *hwif = drive->hwif;
313 struct request *rq = hwif->rq;
315 u8 quiet = rq->cmd_flags & REQ_QUIET;
317 /* get the IDE error register */
318 err = ide_read_error(drive);
319 sense_key = err >> 4;
321 ide_debug_log(IDE_DBG_RQ, "cmd: 0x%x, rq->cmd_type: 0x%x, err: 0x%x, "
323 rq->cmd[0], rq->cmd_type, err, stat);
325 if (blk_sense_request(rq)) {
327 * We got an error trying to get sense info from the drive
328 * (probably while trying to recover from a former error).
331 rq->cmd_flags |= REQ_FAILED;
333 } else if (blk_pc_request(rq) || rq->cmd_type == REQ_TYPE_ATA_PC) {
334 /* All other functions, except for READ. */
337 * if we have an error, pass back CHECK_CONDITION as the
340 if (blk_pc_request(rq) && !rq->errors)
341 rq->errors = SAM_STAT_CHECK_CONDITION;
345 cdrom_saw_media_change(drive);
348 cdrom_saw_media_change(drive);
350 case ILLEGAL_REQUEST:
352 * Don't print error message for this condition--
353 * SFF8090i indicates that 5/24/00 is the correct
354 * response to a request to close the tray if the
355 * drive doesn't have that capability.
356 * cdrom_log_sense() knows this!
358 if (rq->cmd[0] == GPCMD_START_STOP_UNIT)
363 ide_dump_status(drive, "packet command error",
367 rq->cmd_flags |= REQ_FAILED;
370 * instead of playing games with moving completions around,
371 * remove failed request completely and end it when the
372 * request sense has completed
376 } else if (blk_fs_request(rq)) {
377 int do_end_request = 0;
379 /* handle errors from READ and WRITE requests */
381 if (blk_noretry_request(rq))
386 if (rq_data_dir(rq) == READ) {
387 cdrom_saw_media_change(drive);
390 printk(KERN_ERR PFX "%s: tray open\n",
393 if (ide_cd_breathe(drive, rq))
399 cdrom_saw_media_change(drive);
402 * Arrange to retry the request but be sure to give up
403 * if we've retried too many times.
405 if (++rq->errors > ERROR_MAX)
408 case ILLEGAL_REQUEST:
411 * No point in retrying after an illegal request or data
415 ide_dump_status(drive, "command error", stat);
420 * No point in re-trying a zillion times on a bad
421 * sector. If we got here the error is not correctable.
424 ide_dump_status(drive, "media error "
425 "(bad sector)", stat);
429 /* disk appears blank ?? */
431 ide_dump_status(drive, "media error (blank)",
436 if (err & ~ATA_ABORTED) {
437 /* go to the default handler for other errors */
438 ide_error(drive, "cdrom_decode_status", stat);
440 } else if (++rq->errors > ERROR_MAX)
441 /* we've racked up too many retries, abort */
446 * End a request through request sense analysis when we have
447 * sense data. We need this in order to perform end of media
454 * If we got a CHECK_CONDITION status, queue
455 * a request sense command.
458 cdrom_queue_request_sense(drive, NULL, NULL);
461 blk_dump_rq_flags(rq, PFX "bad rq");
466 if (stat & ATA_ERR) {
467 struct request_queue *q = drive->queue;
470 spin_lock_irqsave(q->queue_lock, flags);
471 blkdev_dequeue_request(rq);
472 spin_unlock_irqrestore(q->queue_lock, flags);
476 cdrom_queue_request_sense(drive, rq->sense, rq);
483 * Check the contents of the interrupt reason register from the cdrom
484 * and attempt to recover if there are problems. Returns 0 if everything's
485 * ok; nonzero if the request has been terminated.
487 static int ide_cd_check_ireason(ide_drive_t *drive, struct request *rq,
488 int len, int ireason, int rw)
490 ide_hwif_t *hwif = drive->hwif;
492 ide_debug_log(IDE_DBG_FUNC, "ireason: 0x%x, rw: 0x%x", ireason, rw);
495 * ireason == 0: the drive wants to receive data from us
496 * ireason == 2: the drive is expecting to transfer data to us
498 if (ireason == (!rw << 1))
500 else if (ireason == (rw << 1)) {
503 printk(KERN_ERR PFX "%s: %s: wrong transfer direction!\n",
504 drive->name, __func__);
506 ide_pad_transfer(drive, rw, len);
507 } else if (rw == 0 && ireason == 1) {
509 * Some drives (ASUS) seem to tell us that status info is
510 * available. Just get it and ignore.
512 (void)hwif->tp_ops->read_status(hwif);
515 /* drive wants a command packet, or invalid ireason... */
516 printk(KERN_ERR PFX "%s: %s: bad interrupt reason 0x%02x\n",
517 drive->name, __func__, ireason);
520 if (rq->cmd_type == REQ_TYPE_ATA_PC)
521 rq->cmd_flags |= REQ_FAILED;
526 static void ide_cd_request_sense_fixup(ide_drive_t *drive, struct ide_cmd *cmd)
528 struct request *rq = cmd->rq;
530 ide_debug_log(IDE_DBG_FUNC, "rq->cmd[0]: 0x%x", rq->cmd[0]);
533 * Some of the trailing request sense fields are optional,
534 * and some drives don't send them. Sigh.
536 if (rq->cmd[0] == GPCMD_REQUEST_SENSE &&
537 cmd->nleft > 0 && cmd->nleft <= 5) {
538 unsigned int ofs = cmd->nbytes - cmd->nleft;
540 while (cmd->nleft > 0) {
541 *((u8 *)rq->data + ofs++) = 0;
547 int ide_cd_queue_pc(ide_drive_t *drive, const unsigned char *cmd,
548 int write, void *buffer, unsigned *bufflen,
549 struct request_sense *sense, int timeout,
550 unsigned int cmd_flags)
552 struct cdrom_info *info = drive->driver_data;
553 struct request_sense local_sense;
555 unsigned int flags = 0;
558 sense = &local_sense;
560 ide_debug_log(IDE_DBG_PC, "cmd[0]: 0x%x, write: 0x%x, timeout: %d, "
562 cmd[0], write, timeout, cmd_flags);
564 /* start of retry loop */
569 rq = blk_get_request(drive->queue, write, __GFP_WAIT);
571 memcpy(rq->cmd, cmd, BLK_MAX_CDB);
572 rq->cmd_type = REQ_TYPE_ATA_PC;
574 rq->cmd_flags |= cmd_flags;
575 rq->timeout = timeout;
578 rq->data_len = *bufflen;
581 error = blk_execute_rq(drive->queue, info->disk, rq, 0);
584 *bufflen = rq->data_len;
586 flags = rq->cmd_flags;
590 * FIXME: we should probably abort/retry or something in case of
593 if (flags & REQ_FAILED) {
595 * The request failed. Retry if it was due to a unit
596 * attention status (usually means media was changed).
598 struct request_sense *reqbuf = sense;
600 if (reqbuf->sense_key == UNIT_ATTENTION)
601 cdrom_saw_media_change(drive);
602 else if (reqbuf->sense_key == NOT_READY &&
603 reqbuf->asc == 4 && reqbuf->ascq != 4) {
605 * The drive is in the process of loading
606 * a disk. Retry, but wait a little to give
607 * the drive time to complete the load.
611 /* otherwise, don't retry */
617 /* end of retry loop */
618 } while ((flags & REQ_FAILED) && retries >= 0);
620 /* return an error if the command failed */
621 return (flags & REQ_FAILED) ? -EIO : 0;
624 static void ide_cd_error_cmd(ide_drive_t *drive, struct ide_cmd *cmd)
626 unsigned int nr_bytes = cmd->nbytes - cmd->nleft;
628 if (cmd->tf_flags & IDE_TFLAG_WRITE)
629 nr_bytes -= cmd->last_xfer_len;
632 ide_complete_rq(drive, 0, nr_bytes);
635 static ide_startstop_t cdrom_newpc_intr(ide_drive_t *drive)
637 ide_hwif_t *hwif = drive->hwif;
638 struct ide_cmd *cmd = &hwif->cmd;
639 struct request *rq = hwif->rq;
640 ide_expiry_t *expiry = NULL;
641 int dma_error = 0, dma, thislen, uptodate = 0;
642 int write = (rq_data_dir(rq) == WRITE) ? 1 : 0, rc, nsectors;
643 int sense = blk_sense_request(rq);
644 unsigned int timeout;
648 ide_debug_log(IDE_DBG_PC, "cmd: 0x%x, write: 0x%x", rq->cmd[0], write);
650 /* check for errors */
654 drive->waiting_for_dma = 0;
655 dma_error = hwif->dma_ops->dma_end(drive);
656 ide_dma_unmap_sg(drive, cmd);
658 printk(KERN_ERR PFX "%s: DMA %s error\n", drive->name,
659 write ? "write" : "read");
665 stat = hwif->tp_ops->read_status(hwif);
667 if (!OK_STAT(stat, 0, BAD_R_STAT)) {
668 rc = cdrom_decode_status(drive, stat);
676 /* using dma, transfer is complete now */
679 return ide_error(drive, "dma error", stat);
684 ide_read_bcount_and_ireason(drive, &len, &ireason);
686 thislen = blk_fs_request(rq) ? len : cmd->nleft;
690 ide_debug_log(IDE_DBG_PC, "DRQ: stat: 0x%x, thislen: %d",
693 /* If DRQ is clear, the command has completed. */
694 if ((stat & ATA_DRQ) == 0) {
695 if (blk_fs_request(rq)) {
697 * If we're not done reading/writing, complain.
698 * Otherwise, complete the command normally.
701 if (cmd->nleft > 0) {
702 printk(KERN_ERR PFX "%s: %s: data underrun "
703 "(%u bytes)\n", drive->name, __func__,
706 rq->cmd_flags |= REQ_FAILED;
709 } else if (!blk_pc_request(rq)) {
710 ide_cd_request_sense_fixup(drive, cmd);
711 /* complain if we still have data left to transfer */
712 uptodate = cmd->nleft ? 0 : 1;
714 rq->cmd_flags |= REQ_FAILED;
719 /* check which way to transfer data */
720 rc = ide_cd_check_ireason(drive, rq, len, ireason, write);
724 cmd->last_xfer_len = 0;
726 ide_debug_log(IDE_DBG_PC, "data transfer, rq->cmd_type: 0x%x, "
728 rq->cmd_type, ireason);
731 while (thislen > 0) {
732 int blen = min_t(int, thislen, cmd->nleft);
737 ide_pio_bytes(drive, cmd, write, blen);
738 cmd->last_xfer_len += blen;
743 if (sense && write == 0)
744 rq->sense_len += blen;
747 /* pad, if necessary */
749 if (blk_fs_request(rq) == 0 || write == 0)
750 ide_pad_transfer(drive, write, len);
752 printk(KERN_ERR PFX "%s: confused, missing data\n",
754 blk_dump_rq_flags(rq, "cdrom_newpc_intr");
758 if (blk_pc_request(rq)) {
759 timeout = rq->timeout;
761 timeout = ATAPI_WAIT_PC;
762 if (!blk_fs_request(rq))
763 expiry = ide_cd_expiry;
766 hwif->expiry = expiry;
767 ide_set_handler(drive, cdrom_newpc_intr, timeout);
771 if (blk_pc_request(rq) && rc == 0) {
772 unsigned int dlen = rq->data_len;
776 if (blk_end_request(rq, 0, dlen))
781 if (sense && uptodate)
782 ide_cd_complete_failed_rq(drive, rq);
784 if (blk_fs_request(rq)) {
788 if (uptodate <= 0 && rq->errors == 0)
793 ide_cd_error_cmd(drive, cmd);
795 /* make sure it's fully ended */
796 if (blk_pc_request(rq))
797 nsectors = (rq->data_len + 511) >> 9;
799 nsectors = rq->hard_nr_sectors;
804 if (blk_fs_request(rq) == 0) {
805 rq->data_len -= (cmd->nbytes - cmd->nleft);
806 if (uptodate == 0 && (cmd->tf_flags & IDE_TFLAG_WRITE))
807 rq->data_len += cmd->last_xfer_len;
810 ide_complete_rq(drive, uptodate ? 0 : -EIO, nsectors << 9);
812 if (sense && rc == 2)
813 ide_error(drive, "request sense failure", stat);
818 static ide_startstop_t cdrom_start_rw(ide_drive_t *drive, struct request *rq)
820 struct cdrom_info *cd = drive->driver_data;
821 struct request_queue *q = drive->queue;
822 int write = rq_data_dir(rq) == WRITE;
823 unsigned short sectors_per_frame =
824 queue_hardsect_size(q) >> SECTOR_BITS;
826 ide_debug_log(IDE_DBG_RQ, "rq->cmd[0]: 0x%x, rq->cmd_flags: 0x%x, "
827 "secs_per_frame: %u",
828 rq->cmd[0], rq->cmd_flags, sectors_per_frame);
831 /* disk has become write protected */
832 if (get_disk_ro(cd->disk))
836 * We may be retrying this request after an error. Fix up any
837 * weirdness which might be present in the request packet.
839 q->prep_rq_fn(q, rq);
842 /* fs requests *must* be hardware frame aligned */
843 if ((rq->nr_sectors & (sectors_per_frame - 1)) ||
844 (rq->sector & (sectors_per_frame - 1)))
847 /* use DMA, if possible */
848 drive->dma = !!(drive->dev_flags & IDE_DFLAG_USING_DMA);
851 cd->devinfo.media_written = 1;
853 rq->timeout = ATAPI_WAIT_PC;
858 static void cdrom_do_block_pc(ide_drive_t *drive, struct request *rq)
861 ide_debug_log(IDE_DBG_PC, "rq->cmd[0]: 0x%x, rq->cmd_type: 0x%x",
862 rq->cmd[0], rq->cmd_type);
864 if (blk_pc_request(rq))
865 rq->cmd_flags |= REQ_QUIET;
867 rq->cmd_flags &= ~REQ_FAILED;
872 if (rq->bio || ((rq->cmd_type == REQ_TYPE_ATA_PC) && rq->data_len)) {
873 struct request_queue *q = drive->queue;
874 unsigned int alignment;
878 buf = bio_data(rq->bio);
882 drive->dma = !!(drive->dev_flags & IDE_DFLAG_USING_DMA);
885 * check if dma is safe
887 * NOTE! The "len" and "addr" checks should possibly have
890 alignment = queue_dma_alignment(q) | q->dma_pad_mask;
891 if ((unsigned long)buf & alignment
892 || rq->data_len & q->dma_pad_mask
893 || object_is_on_stack(buf))
898 static ide_startstop_t ide_cd_do_request(ide_drive_t *drive, struct request *rq,
902 int uptodate = 0, nsectors;
904 ide_debug_log(IDE_DBG_RQ, "cmd: 0x%x, block: %llu",
905 rq->cmd[0], (unsigned long long)block);
907 if (drive->debug_mask & IDE_DBG_RQ)
908 blk_dump_rq_flags(rq, "ide_cd_do_request");
910 if (blk_fs_request(rq)) {
911 if (cdrom_start_rw(drive, rq) == ide_stopped)
913 } else if (blk_sense_request(rq) || blk_pc_request(rq) ||
914 rq->cmd_type == REQ_TYPE_ATA_PC) {
916 rq->timeout = ATAPI_WAIT_PC;
918 cdrom_do_block_pc(drive, rq);
919 } else if (blk_special_request(rq)) {
920 /* right now this can only be a reset... */
924 blk_dump_rq_flags(rq, DRV_NAME " bad flags");
930 memset(&cmd, 0, sizeof(cmd));
933 cmd.tf_flags |= IDE_TFLAG_WRITE;
937 if (blk_fs_request(rq) || rq->data_len) {
938 ide_init_sg_cmd(&cmd, blk_fs_request(rq) ? (rq->nr_sectors << 9)
940 ide_map_sg(drive, &cmd);
943 return ide_issue_pc(drive, &cmd);
945 nsectors = rq->hard_nr_sectors;
950 ide_complete_rq(drive, uptodate ? 0 : -EIO, nsectors << 9);
958 * Routines which queue packet commands take as a final argument a pointer to a
959 * request_sense struct. If execution of the command results in an error with a
960 * CHECK CONDITION status, this structure will be filled with the results of the
961 * subsequent request sense command. The pointer can also be NULL, in which case
962 * no sense information is returned.
964 static void msf_from_bcd(struct atapi_msf *msf)
966 msf->minute = bcd2bin(msf->minute);
967 msf->second = bcd2bin(msf->second);
968 msf->frame = bcd2bin(msf->frame);
971 int cdrom_check_status(ide_drive_t *drive, struct request_sense *sense)
973 struct cdrom_info *info = drive->driver_data;
974 struct cdrom_device_info *cdi = &info->devinfo;
975 unsigned char cmd[BLK_MAX_CDB];
977 ide_debug_log(IDE_DBG_FUNC, "enter");
979 memset(cmd, 0, BLK_MAX_CDB);
980 cmd[0] = GPCMD_TEST_UNIT_READY;
983 * Sanyo 3 CD changer uses byte 7 of TEST_UNIT_READY to switch CDs
984 * instead of supporting the LOAD_UNLOAD opcode.
986 cmd[7] = cdi->sanyo_slot % 3;
988 return ide_cd_queue_pc(drive, cmd, 0, NULL, NULL, sense, 0, REQ_QUIET);
991 static int cdrom_read_capacity(ide_drive_t *drive, unsigned long *capacity,
992 unsigned long *sectors_per_frame,
993 struct request_sense *sense)
1001 unsigned char cmd[BLK_MAX_CDB];
1002 unsigned len = sizeof(capbuf);
1005 ide_debug_log(IDE_DBG_FUNC, "enter");
1007 memset(cmd, 0, BLK_MAX_CDB);
1008 cmd[0] = GPCMD_READ_CDVD_CAPACITY;
1010 stat = ide_cd_queue_pc(drive, cmd, 0, &capbuf, &len, sense, 0,
1016 * Sanity check the given block size
1018 blocklen = be32_to_cpu(capbuf.blocklen);
1026 printk(KERN_ERR PFX "%s: weird block size %u\n",
1027 drive->name, blocklen);
1028 printk(KERN_ERR PFX "%s: default to 2kb block size\n",
1034 *capacity = 1 + be32_to_cpu(capbuf.lba);
1035 *sectors_per_frame = blocklen >> SECTOR_BITS;
1037 ide_debug_log(IDE_DBG_PROBE, "cap: %lu, sectors_per_frame: %lu",
1038 *capacity, *sectors_per_frame);
1043 static int cdrom_read_tocentry(ide_drive_t *drive, int trackno, int msf_flag,
1044 int format, char *buf, int buflen,
1045 struct request_sense *sense)
1047 unsigned char cmd[BLK_MAX_CDB];
1049 ide_debug_log(IDE_DBG_FUNC, "enter");
1051 memset(cmd, 0, BLK_MAX_CDB);
1053 cmd[0] = GPCMD_READ_TOC_PMA_ATIP;
1055 cmd[7] = (buflen >> 8);
1056 cmd[8] = (buflen & 0xff);
1057 cmd[9] = (format << 6);
1062 return ide_cd_queue_pc(drive, cmd, 0, buf, &buflen, sense, 0, REQ_QUIET);
1065 /* Try to read the entire TOC for the disk into our internal buffer. */
1066 int ide_cd_read_toc(ide_drive_t *drive, struct request_sense *sense)
1068 int stat, ntracks, i;
1069 struct cdrom_info *info = drive->driver_data;
1070 struct cdrom_device_info *cdi = &info->devinfo;
1071 struct atapi_toc *toc = info->toc;
1073 struct atapi_toc_header hdr;
1074 struct atapi_toc_entry ent;
1077 unsigned long sectors_per_frame = SECTORS_PER_FRAME;
1079 ide_debug_log(IDE_DBG_FUNC, "enter");
1082 /* try to allocate space */
1083 toc = kmalloc(sizeof(struct atapi_toc), GFP_KERNEL);
1085 printk(KERN_ERR PFX "%s: No cdrom TOC buffer!\n",
1093 * Check to see if the existing data is still valid. If it is,
1096 (void) cdrom_check_status(drive, sense);
1098 if (drive->atapi_flags & IDE_AFLAG_TOC_VALID)
1101 /* try to get the total cdrom capacity and sector size */
1102 stat = cdrom_read_capacity(drive, &toc->capacity, §ors_per_frame,
1105 toc->capacity = 0x1fffff;
1107 set_capacity(info->disk, toc->capacity * sectors_per_frame);
1108 /* save a private copy of the TOC capacity for error handling */
1109 drive->probed_capacity = toc->capacity * sectors_per_frame;
1111 blk_queue_hardsect_size(drive->queue,
1112 sectors_per_frame << SECTOR_BITS);
1114 /* first read just the header, so we know how long the TOC is */
1115 stat = cdrom_read_tocentry(drive, 0, 1, 0, (char *) &toc->hdr,
1116 sizeof(struct atapi_toc_header), sense);
1120 if (drive->atapi_flags & IDE_AFLAG_TOCTRACKS_AS_BCD) {
1121 toc->hdr.first_track = bcd2bin(toc->hdr.first_track);
1122 toc->hdr.last_track = bcd2bin(toc->hdr.last_track);
1125 ntracks = toc->hdr.last_track - toc->hdr.first_track + 1;
1128 if (ntracks > MAX_TRACKS)
1129 ntracks = MAX_TRACKS;
1131 /* now read the whole schmeer */
1132 stat = cdrom_read_tocentry(drive, toc->hdr.first_track, 1, 0,
1134 sizeof(struct atapi_toc_header) +
1136 sizeof(struct atapi_toc_entry), sense);
1138 if (stat && toc->hdr.first_track > 1) {
1140 * Cds with CDI tracks only don't have any TOC entries, despite
1141 * of this the returned values are
1142 * first_track == last_track = number of CDI tracks + 1,
1143 * so that this case is indistinguishable from the same layout
1144 * plus an additional audio track. If we get an error for the
1145 * regular case, we assume a CDI without additional audio
1146 * tracks. In this case the readable TOC is empty (CDI tracks
1147 * are not included) and only holds the Leadout entry.
1152 stat = cdrom_read_tocentry(drive, CDROM_LEADOUT, 1, 0,
1154 sizeof(struct atapi_toc_header) +
1156 sizeof(struct atapi_toc_entry),
1161 if (drive->atapi_flags & IDE_AFLAG_TOCTRACKS_AS_BCD) {
1162 toc->hdr.first_track = (u8)bin2bcd(CDROM_LEADOUT);
1163 toc->hdr.last_track = (u8)bin2bcd(CDROM_LEADOUT);
1165 toc->hdr.first_track = CDROM_LEADOUT;
1166 toc->hdr.last_track = CDROM_LEADOUT;
1173 toc->hdr.toc_length = be16_to_cpu(toc->hdr.toc_length);
1175 if (drive->atapi_flags & IDE_AFLAG_TOCTRACKS_AS_BCD) {
1176 toc->hdr.first_track = bcd2bin(toc->hdr.first_track);
1177 toc->hdr.last_track = bcd2bin(toc->hdr.last_track);
1180 for (i = 0; i <= ntracks; i++) {
1181 if (drive->atapi_flags & IDE_AFLAG_TOCADDR_AS_BCD) {
1182 if (drive->atapi_flags & IDE_AFLAG_TOCTRACKS_AS_BCD)
1183 toc->ent[i].track = bcd2bin(toc->ent[i].track);
1184 msf_from_bcd(&toc->ent[i].addr.msf);
1186 toc->ent[i].addr.lba = msf_to_lba(toc->ent[i].addr.msf.minute,
1187 toc->ent[i].addr.msf.second,
1188 toc->ent[i].addr.msf.frame);
1191 if (toc->hdr.first_track != CDROM_LEADOUT) {
1192 /* read the multisession information */
1193 stat = cdrom_read_tocentry(drive, 0, 0, 1, (char *)&ms_tmp,
1194 sizeof(ms_tmp), sense);
1198 toc->last_session_lba = be32_to_cpu(ms_tmp.ent.addr.lba);
1200 ms_tmp.hdr.last_track = CDROM_LEADOUT;
1201 ms_tmp.hdr.first_track = ms_tmp.hdr.last_track;
1202 toc->last_session_lba = msf_to_lba(0, 2, 0); /* 0m 2s 0f */
1205 if (drive->atapi_flags & IDE_AFLAG_TOCADDR_AS_BCD) {
1206 /* re-read multisession information using MSF format */
1207 stat = cdrom_read_tocentry(drive, 0, 1, 1, (char *)&ms_tmp,
1208 sizeof(ms_tmp), sense);
1212 msf_from_bcd(&ms_tmp.ent.addr.msf);
1213 toc->last_session_lba = msf_to_lba(ms_tmp.ent.addr.msf.minute,
1214 ms_tmp.ent.addr.msf.second,
1215 ms_tmp.ent.addr.msf.frame);
1218 toc->xa_flag = (ms_tmp.hdr.first_track != ms_tmp.hdr.last_track);
1220 /* now try to get the total cdrom capacity */
1221 stat = cdrom_get_last_written(cdi, &last_written);
1222 if (!stat && (last_written > toc->capacity)) {
1223 toc->capacity = last_written;
1224 set_capacity(info->disk, toc->capacity * sectors_per_frame);
1225 drive->probed_capacity = toc->capacity * sectors_per_frame;
1228 /* Remember that we've read this stuff. */
1229 drive->atapi_flags |= IDE_AFLAG_TOC_VALID;
1234 int ide_cdrom_get_capabilities(ide_drive_t *drive, u8 *buf)
1236 struct cdrom_info *info = drive->driver_data;
1237 struct cdrom_device_info *cdi = &info->devinfo;
1238 struct packet_command cgc;
1239 int stat, attempts = 3, size = ATAPI_CAPABILITIES_PAGE_SIZE;
1241 ide_debug_log(IDE_DBG_FUNC, "enter");
1243 if ((drive->atapi_flags & IDE_AFLAG_FULL_CAPS_PAGE) == 0)
1244 size -= ATAPI_CAPABILITIES_PAGE_PAD_SIZE;
1246 init_cdrom_command(&cgc, buf, size, CGC_DATA_UNKNOWN);
1248 /* we seem to get stat=0x01,err=0x00 the first time (??) */
1249 stat = cdrom_mode_sense(cdi, &cgc, GPMODE_CAPABILITIES_PAGE, 0);
1252 } while (--attempts);
1256 void ide_cdrom_update_speed(ide_drive_t *drive, u8 *buf)
1258 struct cdrom_info *cd = drive->driver_data;
1259 u16 curspeed, maxspeed;
1261 ide_debug_log(IDE_DBG_FUNC, "enter");
1263 if (drive->atapi_flags & IDE_AFLAG_LE_SPEED_FIELDS) {
1264 curspeed = le16_to_cpup((__le16 *)&buf[8 + 14]);
1265 maxspeed = le16_to_cpup((__le16 *)&buf[8 + 8]);
1267 curspeed = be16_to_cpup((__be16 *)&buf[8 + 14]);
1268 maxspeed = be16_to_cpup((__be16 *)&buf[8 + 8]);
1271 ide_debug_log(IDE_DBG_PROBE, "curspeed: %u, maxspeed: %u",
1272 curspeed, maxspeed);
1274 cd->current_speed = (curspeed + (176/2)) / 176;
1275 cd->max_speed = (maxspeed + (176/2)) / 176;
1278 #define IDE_CD_CAPABILITIES \
1279 (CDC_CLOSE_TRAY | CDC_OPEN_TRAY | CDC_LOCK | CDC_SELECT_SPEED | \
1280 CDC_SELECT_DISC | CDC_MULTI_SESSION | CDC_MCN | CDC_MEDIA_CHANGED | \
1281 CDC_PLAY_AUDIO | CDC_RESET | CDC_DRIVE_STATUS | CDC_CD_R | \
1282 CDC_CD_RW | CDC_DVD | CDC_DVD_R | CDC_DVD_RAM | CDC_GENERIC_PACKET | \
1283 CDC_MO_DRIVE | CDC_MRW | CDC_MRW_W | CDC_RAM)
1285 static struct cdrom_device_ops ide_cdrom_dops = {
1286 .open = ide_cdrom_open_real,
1287 .release = ide_cdrom_release_real,
1288 .drive_status = ide_cdrom_drive_status,
1289 .media_changed = ide_cdrom_check_media_change_real,
1290 .tray_move = ide_cdrom_tray_move,
1291 .lock_door = ide_cdrom_lock_door,
1292 .select_speed = ide_cdrom_select_speed,
1293 .get_last_session = ide_cdrom_get_last_session,
1294 .get_mcn = ide_cdrom_get_mcn,
1295 .reset = ide_cdrom_reset,
1296 .audio_ioctl = ide_cdrom_audio_ioctl,
1297 .capability = IDE_CD_CAPABILITIES,
1298 .generic_packet = ide_cdrom_packet,
1301 static int ide_cdrom_register(ide_drive_t *drive, int nslots)
1303 struct cdrom_info *info = drive->driver_data;
1304 struct cdrom_device_info *devinfo = &info->devinfo;
1306 ide_debug_log(IDE_DBG_PROBE, "nslots: %d", nslots);
1308 devinfo->ops = &ide_cdrom_dops;
1309 devinfo->speed = info->current_speed;
1310 devinfo->capacity = nslots;
1311 devinfo->handle = drive;
1312 strcpy(devinfo->name, drive->name);
1314 if (drive->atapi_flags & IDE_AFLAG_NO_SPEED_SELECT)
1315 devinfo->mask |= CDC_SELECT_SPEED;
1317 devinfo->disk = info->disk;
1318 return register_cdrom(devinfo);
1321 static int ide_cdrom_probe_capabilities(ide_drive_t *drive)
1323 struct cdrom_info *cd = drive->driver_data;
1324 struct cdrom_device_info *cdi = &cd->devinfo;
1325 u8 buf[ATAPI_CAPABILITIES_PAGE_SIZE];
1326 mechtype_t mechtype;
1329 ide_debug_log(IDE_DBG_PROBE, "media: 0x%x, atapi_flags: 0x%lx",
1330 drive->media, drive->atapi_flags);
1332 cdi->mask = (CDC_CD_R | CDC_CD_RW | CDC_DVD | CDC_DVD_R |
1333 CDC_DVD_RAM | CDC_SELECT_DISC | CDC_PLAY_AUDIO |
1334 CDC_MO_DRIVE | CDC_RAM);
1336 if (drive->media == ide_optical) {
1337 cdi->mask &= ~(CDC_MO_DRIVE | CDC_RAM);
1338 printk(KERN_ERR PFX "%s: ATAPI magneto-optical drive\n",
1343 if (drive->atapi_flags & IDE_AFLAG_PRE_ATAPI12) {
1344 drive->atapi_flags &= ~IDE_AFLAG_NO_EJECT;
1345 cdi->mask &= ~CDC_PLAY_AUDIO;
1350 * We have to cheat a little here. the packet will eventually be queued
1351 * with ide_cdrom_packet(), which extracts the drive from cdi->handle.
1352 * Since this device hasn't been registered with the Uniform layer yet,
1353 * it can't do this. Same goes for cdi->ops.
1355 cdi->handle = drive;
1356 cdi->ops = &ide_cdrom_dops;
1358 if (ide_cdrom_get_capabilities(drive, buf))
1361 if ((buf[8 + 6] & 0x01) == 0)
1362 drive->dev_flags &= ~IDE_DFLAG_DOORLOCKING;
1363 if (buf[8 + 6] & 0x08)
1364 drive->atapi_flags &= ~IDE_AFLAG_NO_EJECT;
1365 if (buf[8 + 3] & 0x01)
1366 cdi->mask &= ~CDC_CD_R;
1367 if (buf[8 + 3] & 0x02)
1368 cdi->mask &= ~(CDC_CD_RW | CDC_RAM);
1369 if (buf[8 + 2] & 0x38)
1370 cdi->mask &= ~CDC_DVD;
1371 if (buf[8 + 3] & 0x20)
1372 cdi->mask &= ~(CDC_DVD_RAM | CDC_RAM);
1373 if (buf[8 + 3] & 0x10)
1374 cdi->mask &= ~CDC_DVD_R;
1375 if ((buf[8 + 4] & 0x01) || (drive->atapi_flags & IDE_AFLAG_PLAY_AUDIO_OK))
1376 cdi->mask &= ~CDC_PLAY_AUDIO;
1378 mechtype = buf[8 + 6] >> 5;
1379 if (mechtype == mechtype_caddy ||
1380 mechtype == mechtype_popup ||
1381 (drive->atapi_flags & IDE_AFLAG_NO_AUTOCLOSE))
1382 cdi->mask |= CDC_CLOSE_TRAY;
1384 if (cdi->sanyo_slot > 0) {
1385 cdi->mask &= ~CDC_SELECT_DISC;
1387 } else if (mechtype == mechtype_individual_changer ||
1388 mechtype == mechtype_cartridge_changer) {
1389 nslots = cdrom_number_of_slots(cdi);
1391 cdi->mask &= ~CDC_SELECT_DISC;
1394 ide_cdrom_update_speed(drive, buf);
1396 printk(KERN_INFO PFX "%s: ATAPI", drive->name);
1398 /* don't print speed if the drive reported 0 */
1400 printk(KERN_CONT " %dX", cd->max_speed);
1402 printk(KERN_CONT " %s", (cdi->mask & CDC_DVD) ? "CD-ROM" : "DVD-ROM");
1404 if ((cdi->mask & CDC_DVD_R) == 0 || (cdi->mask & CDC_DVD_RAM) == 0)
1405 printk(KERN_CONT " DVD%s%s",
1406 (cdi->mask & CDC_DVD_R) ? "" : "-R",
1407 (cdi->mask & CDC_DVD_RAM) ? "" : "/RAM");
1409 if ((cdi->mask & CDC_CD_R) == 0 || (cdi->mask & CDC_CD_RW) == 0)
1410 printk(KERN_CONT " CD%s%s",
1411 (cdi->mask & CDC_CD_R) ? "" : "-R",
1412 (cdi->mask & CDC_CD_RW) ? "" : "/RW");
1414 if ((cdi->mask & CDC_SELECT_DISC) == 0)
1415 printk(KERN_CONT " changer w/%d slots", nslots);
1417 printk(KERN_CONT " drive");
1419 printk(KERN_CONT ", %dkB Cache\n",
1420 be16_to_cpup((__be16 *)&buf[8 + 12]));
1425 /* standard prep_rq_fn that builds 10 byte cmds */
1426 static int ide_cdrom_prep_fs(struct request_queue *q, struct request *rq)
1428 int hard_sect = queue_hardsect_size(q);
1429 long block = (long)rq->hard_sector / (hard_sect >> 9);
1430 unsigned long blocks = rq->hard_nr_sectors / (hard_sect >> 9);
1432 memset(rq->cmd, 0, BLK_MAX_CDB);
1434 if (rq_data_dir(rq) == READ)
1435 rq->cmd[0] = GPCMD_READ_10;
1437 rq->cmd[0] = GPCMD_WRITE_10;
1442 rq->cmd[2] = (block >> 24) & 0xff;
1443 rq->cmd[3] = (block >> 16) & 0xff;
1444 rq->cmd[4] = (block >> 8) & 0xff;
1445 rq->cmd[5] = block & 0xff;
1448 * and transfer length
1450 rq->cmd[7] = (blocks >> 8) & 0xff;
1451 rq->cmd[8] = blocks & 0xff;
1457 * Most of the SCSI commands are supported directly by ATAPI devices.
1458 * This transform handles the few exceptions.
1460 static int ide_cdrom_prep_pc(struct request *rq)
1464 /* transform 6-byte read/write commands to the 10-byte version */
1465 if (c[0] == READ_6 || c[0] == WRITE_6) {
1472 c[0] += (READ_10 - READ_6);
1478 * it's silly to pretend we understand 6-byte sense commands, just
1479 * reject with ILLEGAL_REQUEST and the caller should take the
1480 * appropriate action
1482 if (c[0] == MODE_SENSE || c[0] == MODE_SELECT) {
1483 rq->errors = ILLEGAL_REQUEST;
1484 return BLKPREP_KILL;
1490 static int ide_cdrom_prep_fn(struct request_queue *q, struct request *rq)
1492 if (blk_fs_request(rq))
1493 return ide_cdrom_prep_fs(q, rq);
1494 else if (blk_pc_request(rq))
1495 return ide_cdrom_prep_pc(rq);
1500 struct cd_list_entry {
1501 const char *id_model;
1502 const char *id_firmware;
1503 unsigned int cd_flags;
1506 #ifdef CONFIG_IDE_PROC_FS
1507 static sector_t ide_cdrom_capacity(ide_drive_t *drive)
1509 unsigned long capacity, sectors_per_frame;
1511 if (cdrom_read_capacity(drive, &capacity, §ors_per_frame, NULL))
1514 return capacity * sectors_per_frame;
1517 static int proc_idecd_read_capacity(char *page, char **start, off_t off,
1518 int count, int *eof, void *data)
1520 ide_drive_t *drive = data;
1523 len = sprintf(page, "%llu\n", (long long)ide_cdrom_capacity(drive));
1524 PROC_IDE_READ_RETURN(page, start, off, count, eof, len);
1527 static ide_proc_entry_t idecd_proc[] = {
1528 { "capacity", S_IFREG|S_IRUGO, proc_idecd_read_capacity, NULL },
1529 { NULL, 0, NULL, NULL }
1532 static ide_proc_entry_t *ide_cd_proc_entries(ide_drive_t *drive)
1537 static const struct ide_proc_devset *ide_cd_proc_devsets(ide_drive_t *drive)
1543 static const struct cd_list_entry ide_cd_quirks_list[] = {
1544 /* SCR-3231 doesn't support the SET_CD_SPEED command. */
1545 { "SAMSUNG CD-ROM SCR-3231", NULL, IDE_AFLAG_NO_SPEED_SELECT },
1546 /* Old NEC260 (not R) was released before ATAPI 1.2 spec. */
1547 { "NEC CD-ROM DRIVE:260", "1.01", IDE_AFLAG_TOCADDR_AS_BCD |
1548 IDE_AFLAG_PRE_ATAPI12, },
1549 /* Vertos 300, some versions of this drive like to talk BCD. */
1550 { "V003S0DS", NULL, IDE_AFLAG_VERTOS_300_SSD, },
1551 /* Vertos 600 ESD. */
1552 { "V006E0DS", NULL, IDE_AFLAG_VERTOS_600_ESD, },
1554 * Sanyo 3 CD changer uses a non-standard command for CD changing
1555 * (by default standard ATAPI support for CD changers is used).
1557 { "CD-ROM CDR-C3 G", NULL, IDE_AFLAG_SANYO_3CD },
1558 { "CD-ROM CDR-C3G", NULL, IDE_AFLAG_SANYO_3CD },
1559 { "CD-ROM CDR_C36", NULL, IDE_AFLAG_SANYO_3CD },
1560 /* Stingray 8X CD-ROM. */
1561 { "STINGRAY 8422 IDE 8X CD-ROM 7-27-95", NULL, IDE_AFLAG_PRE_ATAPI12 },
1563 * ACER 50X CD-ROM and WPI 32X CD-ROM require the full spec length
1564 * mode sense page capabilities size, but older drives break.
1566 { "ATAPI CD ROM DRIVE 50X MAX", NULL, IDE_AFLAG_FULL_CAPS_PAGE },
1567 { "WPI CDS-32X", NULL, IDE_AFLAG_FULL_CAPS_PAGE },
1568 /* ACER/AOpen 24X CD-ROM has the speed fields byte-swapped. */
1569 { "", "241N", IDE_AFLAG_LE_SPEED_FIELDS },
1571 * Some drives used by Apple don't advertise audio play
1572 * but they do support reading TOC & audio datas.
1574 { "MATSHITADVD-ROM SR-8187", NULL, IDE_AFLAG_PLAY_AUDIO_OK },
1575 { "MATSHITADVD-ROM SR-8186", NULL, IDE_AFLAG_PLAY_AUDIO_OK },
1576 { "MATSHITADVD-ROM SR-8176", NULL, IDE_AFLAG_PLAY_AUDIO_OK },
1577 { "MATSHITADVD-ROM SR-8174", NULL, IDE_AFLAG_PLAY_AUDIO_OK },
1578 { "Optiarc DVD RW AD-5200A", NULL, IDE_AFLAG_PLAY_AUDIO_OK },
1579 { "Optiarc DVD RW AD-7200A", NULL, IDE_AFLAG_PLAY_AUDIO_OK },
1580 { "Optiarc DVD RW AD-7543A", NULL, IDE_AFLAG_NO_AUTOCLOSE },
1581 { "TEAC CD-ROM CD-224E", NULL, IDE_AFLAG_NO_AUTOCLOSE },
1585 static unsigned int ide_cd_flags(u16 *id)
1587 const struct cd_list_entry *cle = ide_cd_quirks_list;
1589 while (cle->id_model) {
1590 if (strcmp(cle->id_model, (char *)&id[ATA_ID_PROD]) == 0 &&
1591 (cle->id_firmware == NULL ||
1592 strstr((char *)&id[ATA_ID_FW_REV], cle->id_firmware)))
1593 return cle->cd_flags;
1600 static int ide_cdrom_setup(ide_drive_t *drive)
1602 struct cdrom_info *cd = drive->driver_data;
1603 struct cdrom_device_info *cdi = &cd->devinfo;
1604 struct request_queue *q = drive->queue;
1605 u16 *id = drive->id;
1606 char *fw_rev = (char *)&id[ATA_ID_FW_REV];
1609 ide_debug_log(IDE_DBG_PROBE, "enter");
1611 blk_queue_prep_rq(q, ide_cdrom_prep_fn);
1612 blk_queue_dma_alignment(q, 31);
1613 blk_queue_update_dma_pad(q, 15);
1615 q->unplug_delay = max((1 * HZ) / 1000, 1);
1617 drive->dev_flags |= IDE_DFLAG_MEDIA_CHANGED;
1618 drive->atapi_flags = IDE_AFLAG_NO_EJECT | ide_cd_flags(id);
1620 if ((drive->atapi_flags & IDE_AFLAG_VERTOS_300_SSD) &&
1621 fw_rev[4] == '1' && fw_rev[6] <= '2')
1622 drive->atapi_flags |= (IDE_AFLAG_TOCTRACKS_AS_BCD |
1623 IDE_AFLAG_TOCADDR_AS_BCD);
1624 else if ((drive->atapi_flags & IDE_AFLAG_VERTOS_600_ESD) &&
1625 fw_rev[4] == '1' && fw_rev[6] <= '2')
1626 drive->atapi_flags |= IDE_AFLAG_TOCTRACKS_AS_BCD;
1627 else if (drive->atapi_flags & IDE_AFLAG_SANYO_3CD)
1628 /* 3 => use CD in slot 0 */
1629 cdi->sanyo_slot = 3;
1631 nslots = ide_cdrom_probe_capabilities(drive);
1633 blk_queue_hardsect_size(q, CD_FRAMESIZE);
1635 if (ide_cdrom_register(drive, nslots)) {
1636 printk(KERN_ERR PFX "%s: %s failed to register device with the"
1637 " cdrom driver.\n", drive->name, __func__);
1638 cd->devinfo.handle = NULL;
1642 ide_proc_register_driver(drive, cd->driver);
1646 static void ide_cd_remove(ide_drive_t *drive)
1648 struct cdrom_info *info = drive->driver_data;
1650 ide_debug_log(IDE_DBG_FUNC, "enter");
1652 ide_proc_unregister_driver(drive, info->driver);
1653 device_del(&info->dev);
1654 del_gendisk(info->disk);
1656 mutex_lock(&idecd_ref_mutex);
1657 put_device(&info->dev);
1658 mutex_unlock(&idecd_ref_mutex);
1661 static void ide_cd_release(struct device *dev)
1663 struct cdrom_info *info = to_ide_drv(dev, cdrom_info);
1664 struct cdrom_device_info *devinfo = &info->devinfo;
1665 ide_drive_t *drive = info->drive;
1666 struct gendisk *g = info->disk;
1668 ide_debug_log(IDE_DBG_FUNC, "enter");
1671 if (devinfo->handle == drive)
1672 unregister_cdrom(devinfo);
1673 drive->driver_data = NULL;
1674 blk_queue_prep_rq(drive->queue, NULL);
1675 g->private_data = NULL;
1680 static int ide_cd_probe(ide_drive_t *);
1682 static struct ide_driver ide_cdrom_driver = {
1684 .owner = THIS_MODULE,
1685 .name = "ide-cdrom",
1686 .bus = &ide_bus_type,
1688 .probe = ide_cd_probe,
1689 .remove = ide_cd_remove,
1690 .version = IDECD_VERSION,
1691 .do_request = ide_cd_do_request,
1692 #ifdef CONFIG_IDE_PROC_FS
1693 .proc_entries = ide_cd_proc_entries,
1694 .proc_devsets = ide_cd_proc_devsets,
1698 static int idecd_open(struct block_device *bdev, fmode_t mode)
1700 struct cdrom_info *info = ide_cd_get(bdev->bd_disk);
1706 rc = cdrom_open(&info->devinfo, bdev, mode);
1714 static int idecd_release(struct gendisk *disk, fmode_t mode)
1716 struct cdrom_info *info = ide_drv_g(disk, cdrom_info);
1718 cdrom_release(&info->devinfo, mode);
1725 static int idecd_set_spindown(struct cdrom_device_info *cdi, unsigned long arg)
1727 struct packet_command cgc;
1732 if (copy_from_user(&spindown, (void __user *)arg, sizeof(char)))
1735 init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_UNKNOWN);
1737 stat = cdrom_mode_sense(cdi, &cgc, GPMODE_CDROM_PAGE, 0);
1741 buffer[11] = (buffer[11] & 0xf0) | (spindown & 0x0f);
1742 return cdrom_mode_select(cdi, &cgc);
1745 static int idecd_get_spindown(struct cdrom_device_info *cdi, unsigned long arg)
1747 struct packet_command cgc;
1752 init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_UNKNOWN);
1754 stat = cdrom_mode_sense(cdi, &cgc, GPMODE_CDROM_PAGE, 0);
1758 spindown = buffer[11] & 0x0f;
1759 if (copy_to_user((void __user *)arg, &spindown, sizeof(char)))
1764 static int idecd_ioctl(struct block_device *bdev, fmode_t mode,
1765 unsigned int cmd, unsigned long arg)
1767 struct cdrom_info *info = ide_drv_g(bdev->bd_disk, cdrom_info);
1771 case CDROMSETSPINDOWN:
1772 return idecd_set_spindown(&info->devinfo, arg);
1773 case CDROMGETSPINDOWN:
1774 return idecd_get_spindown(&info->devinfo, arg);
1779 err = generic_ide_ioctl(info->drive, bdev, cmd, arg);
1781 err = cdrom_ioctl(&info->devinfo, bdev, mode, cmd, arg);
1786 static int idecd_media_changed(struct gendisk *disk)
1788 struct cdrom_info *info = ide_drv_g(disk, cdrom_info);
1789 return cdrom_media_changed(&info->devinfo);
1792 static int idecd_revalidate_disk(struct gendisk *disk)
1794 struct cdrom_info *info = ide_drv_g(disk, cdrom_info);
1795 struct request_sense sense;
1797 ide_cd_read_toc(info->drive, &sense);
1802 static struct block_device_operations idecd_ops = {
1803 .owner = THIS_MODULE,
1805 .release = idecd_release,
1806 .locked_ioctl = idecd_ioctl,
1807 .media_changed = idecd_media_changed,
1808 .revalidate_disk = idecd_revalidate_disk
1811 /* module options */
1812 static unsigned long debug_mask;
1813 module_param(debug_mask, ulong, 0644);
1815 MODULE_DESCRIPTION("ATAPI CD-ROM Driver");
1817 static int ide_cd_probe(ide_drive_t *drive)
1819 struct cdrom_info *info;
1821 struct request_sense sense;
1823 ide_debug_log(IDE_DBG_PROBE, "driver_req: %s, media: 0x%x",
1824 drive->driver_req, drive->media);
1826 if (!strstr("ide-cdrom", drive->driver_req))
1829 if (drive->media != ide_cdrom && drive->media != ide_optical)
1832 drive->debug_mask = debug_mask;
1833 drive->irq_handler = cdrom_newpc_intr;
1835 info = kzalloc(sizeof(struct cdrom_info), GFP_KERNEL);
1837 printk(KERN_ERR PFX "%s: Can't allocate a cdrom structure\n",
1842 g = alloc_disk(1 << PARTN_BITS);
1846 ide_init_disk(g, drive);
1848 info->dev.parent = &drive->gendev;
1849 info->dev.release = ide_cd_release;
1850 dev_set_name(&info->dev, dev_name(&drive->gendev));
1852 if (device_register(&info->dev))
1855 info->drive = drive;
1856 info->driver = &ide_cdrom_driver;
1859 g->private_data = &info->driver;
1861 drive->driver_data = info;
1864 g->driverfs_dev = &drive->gendev;
1865 g->flags = GENHD_FL_CD | GENHD_FL_REMOVABLE;
1866 if (ide_cdrom_setup(drive)) {
1867 put_device(&info->dev);
1871 ide_cd_read_toc(drive, &sense);
1872 g->fops = &idecd_ops;
1873 g->flags |= GENHD_FL_REMOVABLE;
1885 static void __exit ide_cdrom_exit(void)
1887 driver_unregister(&ide_cdrom_driver.gen_driver);
1890 static int __init ide_cdrom_init(void)
1892 printk(KERN_INFO DRV_NAME " driver " IDECD_VERSION "\n");
1893 return driver_register(&ide_cdrom_driver.gen_driver);
1896 MODULE_ALIAS("ide:*m-cdrom*");
1897 MODULE_ALIAS("ide-cd");
1898 module_init(ide_cdrom_init);
1899 module_exit(ide_cdrom_exit);
1900 MODULE_LICENSE("GPL");