4 * Copyright (C) 1994-1996 Scott Snyder <snyder@fnald0.fnal.gov>
5 * Copyright (C) 1996-1998 Erik Andersen <andersee@debian.org>
6 * Copyright (C) 1998-2000 Jens Axboe <axboe@suse.de>
7 * Copyright (C) 2005, 2007 Bartlomiej Zolnierkiewicz
9 * May be copied or modified under the terms of the GNU General Public
10 * License. See linux/COPYING for more information.
12 * See Documentation/cdrom/ide-cd for usage information.
14 * Suggestions are welcome. Patches that work are more welcome though. ;-)
15 * For those wishing to work on this driver, please be sure you download
16 * and comply with the latest Mt. Fuji (SFF8090 version 4) and ATAPI
17 * (SFF-8020i rev 2.6) standards. These documents can be obtained by
19 * ftp://fission.dt.wdc.com/pub/standards/SFF_atapi/spec/SFF8020-r2.6/PS/8020r26.ps
20 * ftp://ftp.avc-pioneer.com/Mtfuji4/Spec/Fuji4r10.pdf
22 * For historical changelog please see:
23 * Documentation/ide/ChangeLog.ide-cd.1994-2004
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 #define to_ide_cd(obj) container_of(obj, struct cdrom_info, kref)
57 #define ide_cd_g(disk) \
58 container_of((disk)->private_data, struct cdrom_info, driver)
60 static struct cdrom_info *ide_cd_get(struct gendisk *disk)
62 struct cdrom_info *cd = NULL;
64 mutex_lock(&idecd_ref_mutex);
68 mutex_unlock(&idecd_ref_mutex);
72 static void ide_cd_release(struct kref *);
74 static void ide_cd_put(struct cdrom_info *cd)
76 mutex_lock(&idecd_ref_mutex);
77 kref_put(&cd->kref, ide_cd_release);
78 mutex_unlock(&idecd_ref_mutex);
82 * Generic packet command support and error handling routines.
85 /* Mark that we've seen a media change and invalidate our internal buffers. */
86 static void cdrom_saw_media_change(ide_drive_t *drive)
88 struct cdrom_info *cd = drive->driver_data;
90 cd->cd_flags |= IDE_CD_FLAG_MEDIA_CHANGED;
91 cd->cd_flags &= ~IDE_CD_FLAG_TOC_VALID;
94 static int cdrom_log_sense(ide_drive_t *drive, struct request *rq,
95 struct request_sense *sense)
99 if (!sense || !rq || (rq->cmd_flags & REQ_QUIET))
102 switch (sense->sense_key) {
104 case RECOVERED_ERROR:
108 * don't care about tray state messages for e.g. capacity
109 * commands or in-progress or becoming ready
111 if (sense->asc == 0x3a || sense->asc == 0x04)
115 case ILLEGAL_REQUEST:
117 * don't log START_STOP unit with LoEj set, since we cannot
118 * reliably check if drive can auto-close
120 if (rq->cmd[0] == GPCMD_START_STOP_UNIT && sense->asc == 0x24)
126 * Make good and sure we've seen this potential media change.
127 * Some drives (i.e. Creative) fail to present the correct sense
128 * key in the error register.
130 cdrom_saw_media_change(drive);
139 static void cdrom_analyze_sense_data(ide_drive_t *drive,
140 struct request *failed_command,
141 struct request_sense *sense)
143 unsigned long sector;
144 unsigned long bio_sectors;
146 struct cdrom_info *info = drive->driver_data;
148 if (!cdrom_log_sense(drive, failed_command, sense))
152 * If a read toc is executed for a CD-R or CD-RW medium where the first
153 * toc has not been recorded yet, it will fail with 05/24/00 (which is a
156 if (failed_command && failed_command->cmd[0] == GPCMD_READ_TOC_PMA_ATIP)
157 if (sense->sense_key == 0x05 && sense->asc == 0x24)
161 if (sense->error_code == 0x70) {
162 switch (sense->sense_key) {
164 case VOLUME_OVERFLOW:
165 case ILLEGAL_REQUEST:
168 if (failed_command == NULL ||
169 !blk_fs_request(failed_command))
171 sector = (sense->information[0] << 24) |
172 (sense->information[1] << 16) |
173 (sense->information[2] << 8) |
174 (sense->information[3]);
176 bio_sectors = bio_sectors(failed_command->bio);
179 if (drive->queue->hardsect_size == 2048)
180 /* device sector size is 2K */
182 sector &= ~(bio_sectors - 1);
183 valid = (sector - failed_command->sector) << 9;
187 if (sector < get_capacity(info->disk) &&
188 drive->probed_capacity - sector < 4 * 75)
189 set_capacity(info->disk, sector);
193 ide_cd_log_error(drive->name, failed_command, sense);
196 /* Initialize a ide-cd packet command request */
197 void ide_cd_init_rq(ide_drive_t *drive, struct request *rq)
199 struct cdrom_info *cd = drive->driver_data;
201 ide_init_drive_cmd(rq);
202 rq->cmd_type = REQ_TYPE_ATA_PC;
203 rq->rq_disk = cd->disk;
206 static void cdrom_queue_request_sense(ide_drive_t *drive, void *sense,
207 struct request *failed_command)
209 struct cdrom_info *info = drive->driver_data;
210 struct request *rq = &info->request_sense_request;
213 sense = &info->sense_data;
215 /* stuff the sense request in front of our current request */
216 ide_cd_init_rq(drive, rq);
219 rq->cmd[0] = GPCMD_REQUEST_SENSE;
223 rq->cmd_type = REQ_TYPE_SENSE;
225 /* NOTE! Save the failed command in "rq->buffer" */
226 rq->buffer = (void *) failed_command;
228 (void) ide_do_drive_cmd(drive, rq, ide_preempt);
231 static void cdrom_end_request(ide_drive_t *drive, int uptodate)
233 struct request *rq = HWGROUP(drive)->rq;
234 int nsectors = rq->hard_cur_sectors;
236 if (blk_sense_request(rq) && uptodate) {
238 * For REQ_TYPE_SENSE, "rq->buffer" points to the original
241 struct request *failed = (struct request *) rq->buffer;
242 struct cdrom_info *info = drive->driver_data;
243 void *sense = &info->sense_data;
248 sense = failed->sense;
249 failed->sense_len = rq->sense_len;
251 cdrom_analyze_sense_data(drive, failed, sense);
253 * now end the failed request
255 if (blk_fs_request(failed)) {
256 if (ide_end_dequeued_request(drive, failed, 0,
257 failed->hard_nr_sectors))
260 spin_lock_irqsave(&ide_lock, flags);
261 if (__blk_end_request(failed, -EIO,
264 spin_unlock_irqrestore(&ide_lock, flags);
267 cdrom_analyze_sense_data(drive, NULL, sense);
270 if (!rq->current_nr_sectors && blk_fs_request(rq))
272 /* make sure it's fully ended */
273 if (blk_pc_request(rq))
274 nsectors = (rq->data_len + 511) >> 9;
278 ide_end_request(drive, uptodate, nsectors);
281 static void ide_dump_status_no_sense(ide_drive_t *drive, const char *msg, u8 st)
285 ide_dump_status(drive, msg, st);
290 * 0: if the request should be continued.
291 * 1: if the request was ended.
293 static int cdrom_decode_status(ide_drive_t *drive, int good_stat, int *stat_ret)
295 struct request *rq = HWGROUP(drive)->rq;
296 int stat, err, sense_key;
298 /* check for errors */
299 stat = ide_read_status(drive);
304 if (OK_STAT(stat, good_stat, BAD_R_STAT))
307 /* get the IDE error register */
308 err = ide_read_error(drive);
309 sense_key = err >> 4;
312 printk(KERN_ERR "%s: missing rq in %s\n",
313 drive->name, __func__);
317 if (blk_sense_request(rq)) {
319 * We got an error trying to get sense info from the drive
320 * (probably while trying to recover from a former error).
323 rq->cmd_flags |= REQ_FAILED;
324 cdrom_end_request(drive, 0);
325 ide_error(drive, "request sense failure", stat);
328 } else if (blk_pc_request(rq) || rq->cmd_type == REQ_TYPE_ATA_PC) {
329 /* All other functions, except for READ. */
332 * if we have an error, pass back CHECK_CONDITION as the
335 if (blk_pc_request(rq) && !rq->errors)
336 rq->errors = SAM_STAT_CHECK_CONDITION;
338 /* check for tray open */
339 if (sense_key == NOT_READY) {
340 cdrom_saw_media_change(drive);
341 } else if (sense_key == UNIT_ATTENTION) {
342 /* check for media change */
343 cdrom_saw_media_change(drive);
345 } else if (sense_key == ILLEGAL_REQUEST &&
346 rq->cmd[0] == GPCMD_START_STOP_UNIT) {
348 * Don't print error message for this condition--
349 * SFF8090i indicates that 5/24/00 is the correct
350 * response to a request to close the tray if the
351 * drive doesn't have that capability.
352 * cdrom_log_sense() knows this!
354 } else if (!(rq->cmd_flags & REQ_QUIET)) {
355 /* otherwise, print an error */
356 ide_dump_status(drive, "packet command error", stat);
359 rq->cmd_flags |= REQ_FAILED;
362 * instead of playing games with moving completions around,
363 * remove failed request completely and end it when the
364 * request sense has completed
368 } else if (blk_fs_request(rq)) {
369 int do_end_request = 0;
371 /* handle errors from READ and WRITE requests */
373 if (blk_noretry_request(rq))
376 if (sense_key == NOT_READY) {
378 if (rq_data_dir(rq) == READ) {
379 cdrom_saw_media_change(drive);
381 /* fail the request */
382 printk(KERN_ERR "%s: tray open\n", drive->name);
385 struct cdrom_info *info = drive->driver_data;
388 * Allow the drive 5 seconds to recover, some
389 * devices will return this error while flushing
393 info->write_timeout = jiffies +
394 ATAPI_WAIT_WRITE_BUSY;
396 if (time_after(jiffies, info->write_timeout))
402 * take a breather relying on the unplug
403 * timer to kick us again
405 spin_lock_irqsave(&ide_lock, flags);
406 blk_plug_device(drive->queue);
407 spin_unlock_irqrestore(&ide_lock,
412 } else if (sense_key == UNIT_ATTENTION) {
414 cdrom_saw_media_change(drive);
417 * Arrange to retry the request but be sure to give up
418 * if we've retried too many times.
420 if (++rq->errors > ERROR_MAX)
422 } else if (sense_key == ILLEGAL_REQUEST ||
423 sense_key == DATA_PROTECT) {
425 * No point in retrying after an illegal request or data
428 ide_dump_status_no_sense(drive, "command error", stat);
430 } else if (sense_key == MEDIUM_ERROR) {
432 * No point in re-trying a zillion times on a bad
433 * sector. If we got here the error is not correctable.
435 ide_dump_status_no_sense(drive,
436 "media error (bad sector)",
439 } else if (sense_key == BLANK_CHECK) {
440 /* disk appears blank ?? */
441 ide_dump_status_no_sense(drive, "media error (blank)",
444 } else if ((err & ~ABRT_ERR) != 0) {
445 /* go to the default handler for other errors */
446 ide_error(drive, "cdrom_decode_status", stat);
448 } else if ((++rq->errors > ERROR_MAX)) {
449 /* we've racked up too many retries, abort */
454 * End a request through request sense analysis when we have
455 * sense data. We need this in order to perform end of media
462 * If we got a CHECK_CONDITION status, queue
463 * a request sense command.
466 cdrom_queue_request_sense(drive, NULL, NULL);
468 blk_dump_rq_flags(rq, "ide-cd: bad rq");
469 cdrom_end_request(drive, 0);
472 /* retry, or handle the next request */
476 if (stat & ERR_STAT) {
479 spin_lock_irqsave(&ide_lock, flags);
480 blkdev_dequeue_request(rq);
481 HWGROUP(drive)->rq = NULL;
482 spin_unlock_irqrestore(&ide_lock, flags);
484 cdrom_queue_request_sense(drive, rq->sense, rq);
486 cdrom_end_request(drive, 0);
491 static int cdrom_timer_expiry(ide_drive_t *drive)
493 struct request *rq = HWGROUP(drive)->rq;
494 unsigned long wait = 0;
497 * Some commands are *slow* and normally take a long time to complete.
498 * Usually we can use the ATAPI "disconnect" to bypass this, but not all
499 * commands/drives support that. Let ide_timer_expiry keep polling us
502 switch (rq->cmd[0]) {
504 case GPCMD_FORMAT_UNIT:
505 case GPCMD_RESERVE_RZONE_TRACK:
506 case GPCMD_CLOSE_TRACK:
507 case GPCMD_FLUSH_CACHE:
508 wait = ATAPI_WAIT_PC;
511 if (!(rq->cmd_flags & REQ_QUIET))
512 printk(KERN_INFO "ide-cd: cmd 0x%x timed out\n",
521 * Set up the device registers for transferring a packet command on DEV,
522 * expecting to later transfer XFERLEN bytes. HANDLER is the routine
523 * which actually transfers the command to the drive. If this is a
524 * drq_interrupt device, this routine will arrange for HANDLER to be
525 * called when the interrupt from the drive arrives. Otherwise, HANDLER
526 * will be called immediately after the drive is prepared for the transfer.
528 static ide_startstop_t cdrom_start_packet_command(ide_drive_t *drive,
530 ide_handler_t *handler)
532 ide_startstop_t startstop;
533 struct cdrom_info *info = drive->driver_data;
534 ide_hwif_t *hwif = drive->hwif;
536 /* wait for the controller to be idle */
537 if (ide_wait_stat(&startstop, drive, 0, BUSY_STAT, WAIT_READY))
540 /* FIXME: for Virtual DMA we must check harder */
542 info->dma = !hwif->dma_ops->dma_setup(drive);
544 /* set up the controller registers */
545 ide_pktcmd_tf_load(drive, IDE_TFLAG_OUT_NSECT | IDE_TFLAG_OUT_LBAL |
546 IDE_TFLAG_NO_SELECT_MASK, xferlen, info->dma);
548 if (info->cd_flags & IDE_CD_FLAG_DRQ_INTERRUPT) {
549 /* waiting for CDB interrupt, not DMA yet. */
551 drive->waiting_for_dma = 0;
554 ide_execute_command(drive, WIN_PACKETCMD, handler,
555 ATAPI_WAIT_PC, cdrom_timer_expiry);
558 ide_execute_pkt_cmd(drive);
560 return (*handler) (drive);
565 * Send a packet command to DRIVE described by CMD_BUF and CMD_LEN. The device
566 * registers must have already been prepared by cdrom_start_packet_command.
567 * HANDLER is the interrupt handler to call when the command completes or
568 * there's data ready.
570 #define ATAPI_MIN_CDB_BYTES 12
571 static ide_startstop_t cdrom_transfer_packet_command(ide_drive_t *drive,
573 ide_handler_t *handler)
575 ide_hwif_t *hwif = drive->hwif;
577 struct cdrom_info *info = drive->driver_data;
578 ide_startstop_t startstop;
580 if (info->cd_flags & IDE_CD_FLAG_DRQ_INTERRUPT) {
582 * Here we should have been called after receiving an interrupt
583 * from the device. DRQ should how be set.
586 /* check for errors */
587 if (cdrom_decode_status(drive, DRQ_STAT, NULL))
590 /* ok, next interrupt will be DMA interrupt */
592 drive->waiting_for_dma = 1;
594 /* otherwise, we must wait for DRQ to get set */
595 if (ide_wait_stat(&startstop, drive, DRQ_STAT,
596 BUSY_STAT, WAIT_READY))
600 /* arm the interrupt handler */
601 ide_set_handler(drive, handler, rq->timeout, cdrom_timer_expiry);
603 /* ATAPI commands get padded out to 12 bytes minimum */
604 cmd_len = COMMAND_SIZE(rq->cmd[0]);
605 if (cmd_len < ATAPI_MIN_CDB_BYTES)
606 cmd_len = ATAPI_MIN_CDB_BYTES;
608 /* send the command to the device */
609 hwif->output_data(drive, NULL, rq->cmd, cmd_len);
611 /* start the DMA if need be */
613 hwif->dma_ops->dma_start(drive);
619 * Block read functions.
621 static void ide_cd_pad_transfer(ide_drive_t *drive, xfer_func_t *xf, int len)
625 xf(drive, NULL, &dum, sizeof(dum));
630 static void ide_cd_drain_data(ide_drive_t *drive, int nsects)
633 static char dum[SECTOR_SIZE];
635 drive->hwif->input_data(drive, NULL, dum, sizeof(dum));
641 * Check the contents of the interrupt reason register from the cdrom
642 * and attempt to recover if there are problems. Returns 0 if everything's
643 * ok; nonzero if the request has been terminated.
645 static int ide_cd_check_ireason(ide_drive_t *drive, struct request *rq,
646 int len, int ireason, int rw)
649 * ireason == 0: the drive wants to receive data from us
650 * ireason == 2: the drive is expecting to transfer data to us
652 if (ireason == (!rw << 1))
654 else if (ireason == (rw << 1)) {
655 ide_hwif_t *hwif = drive->hwif;
659 printk(KERN_ERR "%s: %s: wrong transfer direction!\n",
660 drive->name, __func__);
662 xf = rw ? hwif->output_data : hwif->input_data;
663 ide_cd_pad_transfer(drive, xf, len);
664 } else if (rw == 0 && ireason == 1) {
666 * Some drives (ASUS) seem to tell us that status info is
667 * available. Just get it and ignore.
669 (void)ide_read_status(drive);
672 /* drive wants a command packet, or invalid ireason... */
673 printk(KERN_ERR "%s: %s: bad interrupt reason 0x%02x\n",
674 drive->name, __func__, ireason);
677 if (rq->cmd_type == REQ_TYPE_ATA_PC)
678 rq->cmd_flags |= REQ_FAILED;
680 cdrom_end_request(drive, 0);
685 * Assume that the drive will always provide data in multiples of at least
686 * SECTOR_SIZE, as it gets hairy to keep track of the transfers otherwise.
688 static int ide_cd_check_transfer_size(ide_drive_t *drive, int len)
690 struct cdrom_info *cd = drive->driver_data;
692 if ((len % SECTOR_SIZE) == 0)
695 printk(KERN_ERR "%s: %s: Bad transfer size %d\n",
696 drive->name, __func__, len);
698 if (cd->cd_flags & IDE_CD_FLAG_LIMIT_NFRAMES)
699 printk(KERN_ERR " This drive is not supported by "
700 "this version of the driver\n");
702 printk(KERN_ERR " Trying to limit transfer sizes\n");
703 cd->cd_flags |= IDE_CD_FLAG_LIMIT_NFRAMES;
709 static ide_startstop_t cdrom_newpc_intr(ide_drive_t *);
712 * Routine to send a read/write packet command to the drive. This is usually
713 * called directly from cdrom_start_{read,write}(). However, for drq_interrupt
714 * devices, it is called from an interrupt when the drive is ready to accept
717 static ide_startstop_t cdrom_start_rw_cont(ide_drive_t *drive)
719 struct request *rq = HWGROUP(drive)->rq;
721 if (rq_data_dir(rq) == READ) {
722 unsigned short sectors_per_frame =
723 queue_hardsect_size(drive->queue) >> SECTOR_BITS;
724 int nskip = rq->sector & (sectors_per_frame - 1);
727 * If the requested sector doesn't start on a frame boundary,
728 * we must adjust the start of the transfer so that it does,
729 * and remember to skip the first few sectors.
731 * If the rq->current_nr_sectors field is larger than the size
732 * of the buffer, it will mean that we're to skip a number of
733 * sectors equal to the amount by which rq->current_nr_sectors
734 * is larger than the buffer size.
737 /* sanity check... */
738 if (rq->current_nr_sectors !=
739 bio_cur_sectors(rq->bio)) {
740 printk(KERN_ERR "%s: %s: buffer botch (%u)\n",
741 drive->name, __func__,
742 rq->current_nr_sectors);
743 cdrom_end_request(drive, 0);
746 rq->current_nr_sectors += nskip;
751 /* the immediate bit */
754 /* set up the command */
755 rq->timeout = ATAPI_WAIT_PC;
757 /* send the command to the drive and return */
758 return cdrom_transfer_packet_command(drive, rq, cdrom_newpc_intr);
761 #define IDECD_SEEK_THRESHOLD (1000) /* 1000 blocks */
762 #define IDECD_SEEK_TIMER (5 * WAIT_MIN_SLEEP) /* 100 ms */
763 #define IDECD_SEEK_TIMEOUT (2 * WAIT_CMD) /* 20 sec */
765 static ide_startstop_t cdrom_seek_intr(ide_drive_t *drive)
767 struct cdrom_info *info = drive->driver_data;
769 static int retry = 10;
771 if (cdrom_decode_status(drive, 0, &stat))
774 info->cd_flags |= IDE_CD_FLAG_SEEKING;
776 if (retry && time_after(jiffies, info->start_seek + IDECD_SEEK_TIMER)) {
778 drive->dsc_overlap = 0;
783 static ide_startstop_t cdrom_start_seek_continuation(ide_drive_t *drive)
785 struct request *rq = HWGROUP(drive)->rq;
786 sector_t frame = rq->sector;
788 sector_div(frame, queue_hardsect_size(drive->queue) >> SECTOR_BITS);
790 memset(rq->cmd, 0, sizeof(rq->cmd));
791 rq->cmd[0] = GPCMD_SEEK;
792 put_unaligned(cpu_to_be32(frame), (unsigned int *) &rq->cmd[2]);
794 rq->timeout = ATAPI_WAIT_PC;
795 return cdrom_transfer_packet_command(drive, rq, &cdrom_seek_intr);
798 static ide_startstop_t cdrom_start_seek(ide_drive_t *drive, unsigned int block)
800 struct cdrom_info *info = drive->driver_data;
803 info->start_seek = jiffies;
804 return cdrom_start_packet_command(drive, 0,
805 cdrom_start_seek_continuation);
809 * Fix up a possibly partially-processed request so that we can start it over
810 * entirely, or even put it back on the request queue.
812 static void restore_request(struct request *rq)
814 if (rq->buffer != bio_data(rq->bio)) {
816 (rq->buffer - (char *)bio_data(rq->bio)) / SECTOR_SIZE;
818 rq->buffer = bio_data(rq->bio);
822 rq->current_nr_sectors = bio_cur_sectors(rq->bio);
823 rq->hard_cur_sectors = rq->current_nr_sectors;
824 rq->hard_nr_sectors = rq->nr_sectors;
825 rq->hard_sector = rq->sector;
826 rq->q->prep_rq_fn(rq->q, rq);
830 * All other packet commands.
832 static void ide_cd_request_sense_fixup(struct request *rq)
835 * Some of the trailing request sense fields are optional,
836 * and some drives don't send them. Sigh.
838 if (rq->cmd[0] == GPCMD_REQUEST_SENSE &&
839 rq->data_len > 0 && rq->data_len <= 5)
840 while (rq->data_len > 0) {
841 *(u8 *)rq->data++ = 0;
846 int ide_cd_queue_pc(ide_drive_t *drive, struct request *rq)
848 struct request_sense sense;
850 unsigned int flags = rq->cmd_flags;
852 if (rq->sense == NULL)
855 /* start of retry loop */
858 unsigned long time = jiffies;
859 rq->cmd_flags = flags;
861 error = ide_do_drive_cmd(drive, rq, ide_wait);
862 time = jiffies - time;
865 * FIXME: we should probably abort/retry or something in case of
868 if (rq->cmd_flags & REQ_FAILED) {
870 * The request failed. Retry if it was due to a unit
871 * attention status (usually means media was changed).
873 struct request_sense *reqbuf = rq->sense;
875 if (reqbuf->sense_key == UNIT_ATTENTION)
876 cdrom_saw_media_change(drive);
877 else if (reqbuf->sense_key == NOT_READY &&
878 reqbuf->asc == 4 && reqbuf->ascq != 4) {
880 * The drive is in the process of loading
881 * a disk. Retry, but wait a little to give
882 * the drive time to complete the load.
886 /* otherwise, don't retry */
892 /* end of retry loop */
893 } while ((rq->cmd_flags & REQ_FAILED) && retries >= 0);
895 /* return an error if the command failed */
896 return (rq->cmd_flags & REQ_FAILED) ? -EIO : 0;
900 * Called from blk_end_request_callback() after the data of the request is
901 * completed and before the request itself is completed. By returning value '1',
902 * blk_end_request_callback() returns immediately without completing it.
904 static int cdrom_newpc_intr_dummy_cb(struct request *rq)
909 static ide_startstop_t cdrom_newpc_intr(ide_drive_t *drive)
911 ide_hwif_t *hwif = drive->hwif;
912 struct cdrom_info *info = drive->driver_data;
913 struct request *rq = HWGROUP(drive)->rq;
914 xfer_func_t *xferfunc;
915 ide_expiry_t *expiry = NULL;
916 int dma_error = 0, dma, stat, ireason, len, thislen, uptodate = 0;
917 int write = (rq_data_dir(rq) == WRITE) ? 1 : 0;
918 unsigned int timeout;
921 /* check for errors */
925 dma_error = hwif->dma_ops->dma_end(drive);
927 printk(KERN_ERR "%s: DMA %s error\n", drive->name,
928 write ? "write" : "read");
933 if (cdrom_decode_status(drive, 0, &stat))
936 /* using dma, transfer is complete now */
939 return ide_error(drive, "dma error", stat);
940 if (blk_fs_request(rq)) {
941 ide_end_request(drive, 1, rq->nr_sectors);
947 /* ok we fall to pio :/ */
948 ireason = hwif->INB(hwif->io_ports.nsect_addr) & 0x3;
949 lowcyl = hwif->INB(hwif->io_ports.lbam_addr);
950 highcyl = hwif->INB(hwif->io_ports.lbah_addr);
952 len = lowcyl + (256 * highcyl);
954 thislen = blk_fs_request(rq) ? len : rq->data_len;
958 /* If DRQ is clear, the command has completed. */
959 if ((stat & DRQ_STAT) == 0) {
960 if (blk_fs_request(rq)) {
962 * If we're not done reading/writing, complain.
963 * Otherwise, complete the command normally.
966 if (rq->current_nr_sectors > 0) {
967 printk(KERN_ERR "%s: %s: data underrun "
969 drive->name, __func__,
970 rq->current_nr_sectors);
972 rq->cmd_flags |= REQ_FAILED;
975 cdrom_end_request(drive, uptodate);
977 } else if (!blk_pc_request(rq)) {
978 ide_cd_request_sense_fixup(rq);
979 /* complain if we still have data left to transfer */
980 uptodate = rq->data_len ? 0 : 1;
985 /* check which way to transfer data */
986 if (ide_cd_check_ireason(drive, rq, len, ireason, write))
989 if (blk_fs_request(rq)) {
993 if (ide_cd_check_transfer_size(drive, len)) {
994 cdrom_end_request(drive, 0);
999 * First, figure out if we need to bit-bucket
1000 * any of the leading sectors.
1002 nskip = min_t(int, rq->current_nr_sectors
1003 - bio_cur_sectors(rq->bio),
1006 ide_cd_drain_data(drive, nskip);
1007 rq->current_nr_sectors -= nskip;
1008 thislen -= (nskip << 9);
1015 xferfunc = hwif->output_data;
1018 xferfunc = hwif->input_data;
1022 while (thislen > 0) {
1023 u8 *ptr = blk_fs_request(rq) ? NULL : rq->data;
1024 int blen = rq->data_len;
1028 if (blk_fs_request(rq)) {
1030 blen = rq->current_nr_sectors << 9;
1032 ptr = bio_data(rq->bio);
1033 blen = bio_iovec(rq->bio)->bv_len;
1038 if (blk_fs_request(rq) && !write)
1040 * If the buffers are full, pipe the rest into
1043 ide_cd_drain_data(drive, thislen >> 9);
1045 printk(KERN_ERR "%s: confused, missing data\n",
1047 blk_dump_rq_flags(rq, rq_data_dir(rq)
1048 ? "cdrom_newpc_intr, write"
1049 : "cdrom_newpc_intr, read");
1057 xferfunc(drive, NULL, ptr, blen);
1062 if (blk_fs_request(rq)) {
1064 rq->nr_sectors -= (blen >> 9);
1065 rq->current_nr_sectors -= (blen >> 9);
1066 rq->sector += (blen >> 9);
1068 if (rq->current_nr_sectors == 0 && rq->nr_sectors)
1069 cdrom_end_request(drive, 1);
1071 rq->data_len -= blen;
1074 * The request can't be completed until DRQ is cleared.
1075 * So complete the data, but don't complete the request
1076 * using the dummy function for the callback feature
1077 * of blk_end_request_callback().
1080 blk_end_request_callback(rq, 0, blen,
1081 cdrom_newpc_intr_dummy_cb);
1085 if (!write && blk_sense_request(rq))
1086 rq->sense_len += blen;
1089 /* pad, if necessary */
1090 if (!blk_fs_request(rq) && len > 0)
1091 ide_cd_pad_transfer(drive, xferfunc, len);
1093 if (blk_pc_request(rq)) {
1094 timeout = rq->timeout;
1096 timeout = ATAPI_WAIT_PC;
1097 if (!blk_fs_request(rq))
1098 expiry = cdrom_timer_expiry;
1101 ide_set_handler(drive, cdrom_newpc_intr, timeout, expiry);
1105 if (blk_pc_request(rq)) {
1106 unsigned long flags;
1107 unsigned int dlen = rq->data_len;
1112 spin_lock_irqsave(&ide_lock, flags);
1113 if (__blk_end_request(rq, 0, dlen))
1115 HWGROUP(drive)->rq = NULL;
1116 spin_unlock_irqrestore(&ide_lock, flags);
1119 rq->cmd_flags |= REQ_FAILED;
1120 cdrom_end_request(drive, uptodate);
1125 static ide_startstop_t cdrom_start_rw(ide_drive_t *drive, struct request *rq)
1127 struct cdrom_info *cd = drive->driver_data;
1128 int write = rq_data_dir(rq) == WRITE;
1129 unsigned short sectors_per_frame =
1130 queue_hardsect_size(drive->queue) >> SECTOR_BITS;
1133 /* disk has become write protected */
1134 if (cd->disk->policy) {
1135 cdrom_end_request(drive, 0);
1140 * We may be retrying this request after an error. Fix up any
1141 * weirdness which might be present in the request packet.
1143 restore_request(rq);
1146 /* use DMA, if possible / writes *must* be hardware frame aligned */
1147 if ((rq->nr_sectors & (sectors_per_frame - 1)) ||
1148 (rq->sector & (sectors_per_frame - 1))) {
1150 cdrom_end_request(drive, 0);
1155 cd->dma = drive->using_dma;
1158 cd->devinfo.media_written = 1;
1160 /* start sending the read/write request to the drive */
1161 return cdrom_start_packet_command(drive, 32768, cdrom_start_rw_cont);
1164 static ide_startstop_t cdrom_do_newpc_cont(ide_drive_t *drive)
1166 struct request *rq = HWGROUP(drive)->rq;
1169 rq->timeout = ATAPI_WAIT_PC;
1171 return cdrom_transfer_packet_command(drive, rq, cdrom_newpc_intr);
1174 static ide_startstop_t cdrom_do_block_pc(ide_drive_t *drive, struct request *rq)
1176 struct cdrom_info *info = drive->driver_data;
1178 if (blk_pc_request(rq))
1179 rq->cmd_flags |= REQ_QUIET;
1181 rq->cmd_flags &= ~REQ_FAILED;
1187 int mask = drive->queue->dma_alignment;
1188 unsigned long addr =
1189 (unsigned long)page_address(bio_page(rq->bio));
1191 info->dma = drive->using_dma;
1194 * check if dma is safe
1196 * NOTE! The "len" and "addr" checks should possibly have
1199 if ((rq->data_len & 15) || (addr & mask))
1203 /* start sending the command to the drive */
1204 return cdrom_start_packet_command(drive, rq->data_len,
1205 cdrom_do_newpc_cont);
1209 * cdrom driver request routine.
1211 static ide_startstop_t ide_do_rw_cdrom(ide_drive_t *drive, struct request *rq,
1214 ide_startstop_t action;
1215 struct cdrom_info *info = drive->driver_data;
1217 if (blk_fs_request(rq)) {
1218 if (info->cd_flags & IDE_CD_FLAG_SEEKING) {
1219 unsigned long elapsed = jiffies - info->start_seek;
1220 int stat = ide_read_status(drive);
1222 if ((stat & SEEK_STAT) != SEEK_STAT) {
1223 if (elapsed < IDECD_SEEK_TIMEOUT) {
1224 ide_stall_queue(drive,
1228 printk(KERN_ERR "%s: DSC timeout\n",
1231 info->cd_flags &= ~IDE_CD_FLAG_SEEKING;
1233 if (rq_data_dir(rq) == READ &&
1234 IDE_LARGE_SEEK(info->last_block, block,
1235 IDECD_SEEK_THRESHOLD) &&
1237 action = cdrom_start_seek(drive, block);
1239 action = cdrom_start_rw(drive, rq);
1240 info->last_block = block;
1242 } else if (blk_sense_request(rq) || blk_pc_request(rq) ||
1243 rq->cmd_type == REQ_TYPE_ATA_PC) {
1244 return cdrom_do_block_pc(drive, rq);
1245 } else if (blk_special_request(rq)) {
1246 /* right now this can only be a reset... */
1247 cdrom_end_request(drive, 1);
1251 blk_dump_rq_flags(rq, "ide-cd bad flags");
1252 cdrom_end_request(drive, 0);
1261 * Routines which queue packet commands take as a final argument a pointer to a
1262 * request_sense struct. If execution of the command results in an error with a
1263 * CHECK CONDITION status, this structure will be filled with the results of the
1264 * subsequent request sense command. The pointer can also be NULL, in which case
1265 * no sense information is returned.
1267 static void msf_from_bcd(struct atapi_msf *msf)
1269 msf->minute = BCD2BIN(msf->minute);
1270 msf->second = BCD2BIN(msf->second);
1271 msf->frame = BCD2BIN(msf->frame);
1274 int cdrom_check_status(ide_drive_t *drive, struct request_sense *sense)
1277 struct cdrom_info *info = drive->driver_data;
1278 struct cdrom_device_info *cdi = &info->devinfo;
1280 ide_cd_init_rq(drive, &req);
1283 req.cmd[0] = GPCMD_TEST_UNIT_READY;
1284 req.cmd_flags |= REQ_QUIET;
1287 * Sanyo 3 CD changer uses byte 7 of TEST_UNIT_READY to switch CDs
1288 * instead of supporting the LOAD_UNLOAD opcode.
1290 req.cmd[7] = cdi->sanyo_slot % 3;
1292 return ide_cd_queue_pc(drive, &req);
1295 static int cdrom_read_capacity(ide_drive_t *drive, unsigned long *capacity,
1296 unsigned long *sectors_per_frame,
1297 struct request_sense *sense)
1307 ide_cd_init_rq(drive, &req);
1310 req.cmd[0] = GPCMD_READ_CDVD_CAPACITY;
1311 req.data = (char *)&capbuf;
1312 req.data_len = sizeof(capbuf);
1313 req.cmd_flags |= REQ_QUIET;
1315 stat = ide_cd_queue_pc(drive, &req);
1317 *capacity = 1 + be32_to_cpu(capbuf.lba);
1318 *sectors_per_frame =
1319 be32_to_cpu(capbuf.blocklen) >> SECTOR_BITS;
1325 static int cdrom_read_tocentry(ide_drive_t *drive, int trackno, int msf_flag,
1326 int format, char *buf, int buflen,
1327 struct request_sense *sense)
1331 ide_cd_init_rq(drive, &req);
1335 req.data_len = buflen;
1336 req.cmd_flags |= REQ_QUIET;
1337 req.cmd[0] = GPCMD_READ_TOC_PMA_ATIP;
1338 req.cmd[6] = trackno;
1339 req.cmd[7] = (buflen >> 8);
1340 req.cmd[8] = (buflen & 0xff);
1341 req.cmd[9] = (format << 6);
1346 return ide_cd_queue_pc(drive, &req);
1349 /* Try to read the entire TOC for the disk into our internal buffer. */
1350 int ide_cd_read_toc(ide_drive_t *drive, struct request_sense *sense)
1352 int stat, ntracks, i;
1353 struct cdrom_info *info = drive->driver_data;
1354 struct cdrom_device_info *cdi = &info->devinfo;
1355 struct atapi_toc *toc = info->toc;
1357 struct atapi_toc_header hdr;
1358 struct atapi_toc_entry ent;
1361 unsigned long sectors_per_frame = SECTORS_PER_FRAME;
1364 /* try to allocate space */
1365 toc = kmalloc(sizeof(struct atapi_toc), GFP_KERNEL);
1367 printk(KERN_ERR "%s: No cdrom TOC buffer!\n",
1375 * Check to see if the existing data is still valid. If it is,
1378 (void) cdrom_check_status(drive, sense);
1380 if (info->cd_flags & IDE_CD_FLAG_TOC_VALID)
1383 /* try to get the total cdrom capacity and sector size */
1384 stat = cdrom_read_capacity(drive, &toc->capacity, §ors_per_frame,
1387 toc->capacity = 0x1fffff;
1389 set_capacity(info->disk, toc->capacity * sectors_per_frame);
1390 /* save a private copy of the TOC capacity for error handling */
1391 drive->probed_capacity = toc->capacity * sectors_per_frame;
1393 blk_queue_hardsect_size(drive->queue,
1394 sectors_per_frame << SECTOR_BITS);
1396 /* first read just the header, so we know how long the TOC is */
1397 stat = cdrom_read_tocentry(drive, 0, 1, 0, (char *) &toc->hdr,
1398 sizeof(struct atapi_toc_header), sense);
1402 if (info->cd_flags & IDE_CD_FLAG_TOCTRACKS_AS_BCD) {
1403 toc->hdr.first_track = BCD2BIN(toc->hdr.first_track);
1404 toc->hdr.last_track = BCD2BIN(toc->hdr.last_track);
1407 ntracks = toc->hdr.last_track - toc->hdr.first_track + 1;
1410 if (ntracks > MAX_TRACKS)
1411 ntracks = MAX_TRACKS;
1413 /* now read the whole schmeer */
1414 stat = cdrom_read_tocentry(drive, toc->hdr.first_track, 1, 0,
1416 sizeof(struct atapi_toc_header) +
1418 sizeof(struct atapi_toc_entry), sense);
1420 if (stat && toc->hdr.first_track > 1) {
1422 * Cds with CDI tracks only don't have any TOC entries, despite
1423 * of this the returned values are
1424 * first_track == last_track = number of CDI tracks + 1,
1425 * so that this case is indistinguishable from the same layout
1426 * plus an additional audio track. If we get an error for the
1427 * regular case, we assume a CDI without additional audio
1428 * tracks. In this case the readable TOC is empty (CDI tracks
1429 * are not included) and only holds the Leadout entry.
1434 stat = cdrom_read_tocentry(drive, CDROM_LEADOUT, 1, 0,
1436 sizeof(struct atapi_toc_header) +
1438 sizeof(struct atapi_toc_entry),
1443 if (info->cd_flags & IDE_CD_FLAG_TOCTRACKS_AS_BCD) {
1444 toc->hdr.first_track = (u8)BIN2BCD(CDROM_LEADOUT);
1445 toc->hdr.last_track = (u8)BIN2BCD(CDROM_LEADOUT);
1447 toc->hdr.first_track = CDROM_LEADOUT;
1448 toc->hdr.last_track = CDROM_LEADOUT;
1455 toc->hdr.toc_length = be16_to_cpu(toc->hdr.toc_length);
1457 if (info->cd_flags & IDE_CD_FLAG_TOCTRACKS_AS_BCD) {
1458 toc->hdr.first_track = BCD2BIN(toc->hdr.first_track);
1459 toc->hdr.last_track = BCD2BIN(toc->hdr.last_track);
1462 for (i = 0; i <= ntracks; i++) {
1463 if (info->cd_flags & IDE_CD_FLAG_TOCADDR_AS_BCD) {
1464 if (info->cd_flags & IDE_CD_FLAG_TOCTRACKS_AS_BCD)
1465 toc->ent[i].track = BCD2BIN(toc->ent[i].track);
1466 msf_from_bcd(&toc->ent[i].addr.msf);
1468 toc->ent[i].addr.lba = msf_to_lba(toc->ent[i].addr.msf.minute,
1469 toc->ent[i].addr.msf.second,
1470 toc->ent[i].addr.msf.frame);
1473 if (toc->hdr.first_track != CDROM_LEADOUT) {
1474 /* read the multisession information */
1475 stat = cdrom_read_tocentry(drive, 0, 0, 1, (char *)&ms_tmp,
1476 sizeof(ms_tmp), sense);
1480 toc->last_session_lba = be32_to_cpu(ms_tmp.ent.addr.lba);
1482 ms_tmp.hdr.last_track = CDROM_LEADOUT;
1483 ms_tmp.hdr.first_track = ms_tmp.hdr.last_track;
1484 toc->last_session_lba = msf_to_lba(0, 2, 0); /* 0m 2s 0f */
1487 if (info->cd_flags & IDE_CD_FLAG_TOCADDR_AS_BCD) {
1488 /* re-read multisession information using MSF format */
1489 stat = cdrom_read_tocentry(drive, 0, 1, 1, (char *)&ms_tmp,
1490 sizeof(ms_tmp), sense);
1494 msf_from_bcd(&ms_tmp.ent.addr.msf);
1495 toc->last_session_lba = msf_to_lba(ms_tmp.ent.addr.msf.minute,
1496 ms_tmp.ent.addr.msf.second,
1497 ms_tmp.ent.addr.msf.frame);
1500 toc->xa_flag = (ms_tmp.hdr.first_track != ms_tmp.hdr.last_track);
1502 /* now try to get the total cdrom capacity */
1503 stat = cdrom_get_last_written(cdi, &last_written);
1504 if (!stat && (last_written > toc->capacity)) {
1505 toc->capacity = last_written;
1506 set_capacity(info->disk, toc->capacity * sectors_per_frame);
1507 drive->probed_capacity = toc->capacity * sectors_per_frame;
1510 /* Remember that we've read this stuff. */
1511 info->cd_flags |= IDE_CD_FLAG_TOC_VALID;
1516 int ide_cdrom_get_capabilities(ide_drive_t *drive, u8 *buf)
1518 struct cdrom_info *info = drive->driver_data;
1519 struct cdrom_device_info *cdi = &info->devinfo;
1520 struct packet_command cgc;
1521 int stat, attempts = 3, size = ATAPI_CAPABILITIES_PAGE_SIZE;
1523 if ((info->cd_flags & IDE_CD_FLAG_FULL_CAPS_PAGE) == 0)
1524 size -= ATAPI_CAPABILITIES_PAGE_PAD_SIZE;
1526 init_cdrom_command(&cgc, buf, size, CGC_DATA_UNKNOWN);
1528 /* we seem to get stat=0x01,err=0x00 the first time (??) */
1529 stat = cdrom_mode_sense(cdi, &cgc, GPMODE_CAPABILITIES_PAGE, 0);
1532 } while (--attempts);
1536 void ide_cdrom_update_speed(ide_drive_t *drive, u8 *buf)
1538 struct cdrom_info *cd = drive->driver_data;
1539 u16 curspeed, maxspeed;
1541 curspeed = *(u16 *)&buf[8 + 14];
1542 maxspeed = *(u16 *)&buf[8 + 8];
1544 if (cd->cd_flags & IDE_CD_FLAG_LE_SPEED_FIELDS) {
1545 curspeed = le16_to_cpu(curspeed);
1546 maxspeed = le16_to_cpu(maxspeed);
1548 curspeed = be16_to_cpu(curspeed);
1549 maxspeed = be16_to_cpu(maxspeed);
1552 cd->current_speed = (curspeed + (176/2)) / 176;
1553 cd->max_speed = (maxspeed + (176/2)) / 176;
1556 #define IDE_CD_CAPABILITIES \
1557 (CDC_CLOSE_TRAY | CDC_OPEN_TRAY | CDC_LOCK | CDC_SELECT_SPEED | \
1558 CDC_SELECT_DISC | CDC_MULTI_SESSION | CDC_MCN | CDC_MEDIA_CHANGED | \
1559 CDC_PLAY_AUDIO | CDC_RESET | CDC_DRIVE_STATUS | CDC_CD_R | \
1560 CDC_CD_RW | CDC_DVD | CDC_DVD_R | CDC_DVD_RAM | CDC_GENERIC_PACKET | \
1561 CDC_MO_DRIVE | CDC_MRW | CDC_MRW_W | CDC_RAM)
1563 static struct cdrom_device_ops ide_cdrom_dops = {
1564 .open = ide_cdrom_open_real,
1565 .release = ide_cdrom_release_real,
1566 .drive_status = ide_cdrom_drive_status,
1567 .media_changed = ide_cdrom_check_media_change_real,
1568 .tray_move = ide_cdrom_tray_move,
1569 .lock_door = ide_cdrom_lock_door,
1570 .select_speed = ide_cdrom_select_speed,
1571 .get_last_session = ide_cdrom_get_last_session,
1572 .get_mcn = ide_cdrom_get_mcn,
1573 .reset = ide_cdrom_reset,
1574 .audio_ioctl = ide_cdrom_audio_ioctl,
1575 .capability = IDE_CD_CAPABILITIES,
1576 .generic_packet = ide_cdrom_packet,
1579 static int ide_cdrom_register(ide_drive_t *drive, int nslots)
1581 struct cdrom_info *info = drive->driver_data;
1582 struct cdrom_device_info *devinfo = &info->devinfo;
1584 devinfo->ops = &ide_cdrom_dops;
1585 devinfo->speed = info->current_speed;
1586 devinfo->capacity = nslots;
1587 devinfo->handle = drive;
1588 strcpy(devinfo->name, drive->name);
1590 if (info->cd_flags & IDE_CD_FLAG_NO_SPEED_SELECT)
1591 devinfo->mask |= CDC_SELECT_SPEED;
1593 devinfo->disk = info->disk;
1594 return register_cdrom(devinfo);
1597 static int ide_cdrom_probe_capabilities(ide_drive_t *drive)
1599 struct cdrom_info *cd = drive->driver_data;
1600 struct cdrom_device_info *cdi = &cd->devinfo;
1601 u8 buf[ATAPI_CAPABILITIES_PAGE_SIZE];
1602 mechtype_t mechtype;
1605 cdi->mask = (CDC_CD_R | CDC_CD_RW | CDC_DVD | CDC_DVD_R |
1606 CDC_DVD_RAM | CDC_SELECT_DISC | CDC_PLAY_AUDIO |
1607 CDC_MO_DRIVE | CDC_RAM);
1609 if (drive->media == ide_optical) {
1610 cdi->mask &= ~(CDC_MO_DRIVE | CDC_RAM);
1611 printk(KERN_ERR "%s: ATAPI magneto-optical drive\n",
1616 if (cd->cd_flags & IDE_CD_FLAG_PRE_ATAPI12) {
1617 cd->cd_flags &= ~IDE_CD_FLAG_NO_EJECT;
1618 cdi->mask &= ~CDC_PLAY_AUDIO;
1623 * We have to cheat a little here. the packet will eventually be queued
1624 * with ide_cdrom_packet(), which extracts the drive from cdi->handle.
1625 * Since this device hasn't been registered with the Uniform layer yet,
1626 * it can't do this. Same goes for cdi->ops.
1628 cdi->handle = drive;
1629 cdi->ops = &ide_cdrom_dops;
1631 if (ide_cdrom_get_capabilities(drive, buf))
1634 if ((buf[8 + 6] & 0x01) == 0)
1635 cd->cd_flags |= IDE_CD_FLAG_NO_DOORLOCK;
1636 if (buf[8 + 6] & 0x08)
1637 cd->cd_flags &= ~IDE_CD_FLAG_NO_EJECT;
1638 if (buf[8 + 3] & 0x01)
1639 cdi->mask &= ~CDC_CD_R;
1640 if (buf[8 + 3] & 0x02)
1641 cdi->mask &= ~(CDC_CD_RW | CDC_RAM);
1642 if (buf[8 + 2] & 0x38)
1643 cdi->mask &= ~CDC_DVD;
1644 if (buf[8 + 3] & 0x20)
1645 cdi->mask &= ~(CDC_DVD_RAM | CDC_RAM);
1646 if (buf[8 + 3] & 0x10)
1647 cdi->mask &= ~CDC_DVD_R;
1648 if ((buf[8 + 4] & 0x01) || (cd->cd_flags & IDE_CD_FLAG_PLAY_AUDIO_OK))
1649 cdi->mask &= ~CDC_PLAY_AUDIO;
1651 mechtype = buf[8 + 6] >> 5;
1652 if (mechtype == mechtype_caddy || mechtype == mechtype_popup)
1653 cdi->mask |= CDC_CLOSE_TRAY;
1655 if (cdi->sanyo_slot > 0) {
1656 cdi->mask &= ~CDC_SELECT_DISC;
1658 } else if (mechtype == mechtype_individual_changer ||
1659 mechtype == mechtype_cartridge_changer) {
1660 nslots = cdrom_number_of_slots(cdi);
1662 cdi->mask &= ~CDC_SELECT_DISC;
1665 ide_cdrom_update_speed(drive, buf);
1667 printk(KERN_INFO "%s: ATAPI", drive->name);
1669 /* don't print speed if the drive reported 0 */
1671 printk(KERN_CONT " %dX", cd->max_speed);
1673 printk(KERN_CONT " %s", (cdi->mask & CDC_DVD) ? "CD-ROM" : "DVD-ROM");
1675 if ((cdi->mask & CDC_DVD_R) == 0 || (cdi->mask & CDC_DVD_RAM) == 0)
1676 printk(KERN_CONT " DVD%s%s",
1677 (cdi->mask & CDC_DVD_R) ? "" : "-R",
1678 (cdi->mask & CDC_DVD_RAM) ? "" : "-RAM");
1680 if ((cdi->mask & CDC_CD_R) == 0 || (cdi->mask & CDC_CD_RW) == 0)
1681 printk(KERN_CONT " CD%s%s",
1682 (cdi->mask & CDC_CD_R) ? "" : "-R",
1683 (cdi->mask & CDC_CD_RW) ? "" : "/RW");
1685 if ((cdi->mask & CDC_SELECT_DISC) == 0)
1686 printk(KERN_CONT " changer w/%d slots", nslots);
1688 printk(KERN_CONT " drive");
1690 printk(KERN_CONT ", %dkB Cache\n", be16_to_cpu(*(u16 *)&buf[8 + 12]));
1695 /* standard prep_rq_fn that builds 10 byte cmds */
1696 static int ide_cdrom_prep_fs(struct request_queue *q, struct request *rq)
1698 int hard_sect = queue_hardsect_size(q);
1699 long block = (long)rq->hard_sector / (hard_sect >> 9);
1700 unsigned long blocks = rq->hard_nr_sectors / (hard_sect >> 9);
1702 memset(rq->cmd, 0, sizeof(rq->cmd));
1704 if (rq_data_dir(rq) == READ)
1705 rq->cmd[0] = GPCMD_READ_10;
1707 rq->cmd[0] = GPCMD_WRITE_10;
1712 rq->cmd[2] = (block >> 24) & 0xff;
1713 rq->cmd[3] = (block >> 16) & 0xff;
1714 rq->cmd[4] = (block >> 8) & 0xff;
1715 rq->cmd[5] = block & 0xff;
1718 * and transfer length
1720 rq->cmd[7] = (blocks >> 8) & 0xff;
1721 rq->cmd[8] = blocks & 0xff;
1727 * Most of the SCSI commands are supported directly by ATAPI devices.
1728 * This transform handles the few exceptions.
1730 static int ide_cdrom_prep_pc(struct request *rq)
1734 /* transform 6-byte read/write commands to the 10-byte version */
1735 if (c[0] == READ_6 || c[0] == WRITE_6) {
1742 c[0] += (READ_10 - READ_6);
1748 * it's silly to pretend we understand 6-byte sense commands, just
1749 * reject with ILLEGAL_REQUEST and the caller should take the
1750 * appropriate action
1752 if (c[0] == MODE_SENSE || c[0] == MODE_SELECT) {
1753 rq->errors = ILLEGAL_REQUEST;
1754 return BLKPREP_KILL;
1760 static int ide_cdrom_prep_fn(struct request_queue *q, struct request *rq)
1762 if (blk_fs_request(rq))
1763 return ide_cdrom_prep_fs(q, rq);
1764 else if (blk_pc_request(rq))
1765 return ide_cdrom_prep_pc(rq);
1770 struct cd_list_entry {
1771 const char *id_model;
1772 const char *id_firmware;
1773 unsigned int cd_flags;
1776 #ifdef CONFIG_IDE_PROC_FS
1777 static sector_t ide_cdrom_capacity(ide_drive_t *drive)
1779 unsigned long capacity, sectors_per_frame;
1781 if (cdrom_read_capacity(drive, &capacity, §ors_per_frame, NULL))
1784 return capacity * sectors_per_frame;
1787 static int proc_idecd_read_capacity(char *page, char **start, off_t off,
1788 int count, int *eof, void *data)
1790 ide_drive_t *drive = data;
1793 len = sprintf(page, "%llu\n", (long long)ide_cdrom_capacity(drive));
1794 PROC_IDE_READ_RETURN(page, start, off, count, eof, len);
1797 static ide_proc_entry_t idecd_proc[] = {
1798 { "capacity", S_IFREG|S_IRUGO, proc_idecd_read_capacity, NULL },
1799 { NULL, 0, NULL, NULL }
1802 static void ide_cdrom_add_settings(ide_drive_t *drive)
1804 ide_add_setting(drive, "dsc_overlap", SETTING_RW, TYPE_BYTE, 0, 1, 1, 1,
1805 &drive->dsc_overlap, NULL);
1808 static inline void ide_cdrom_add_settings(ide_drive_t *drive) { ; }
1811 static const struct cd_list_entry ide_cd_quirks_list[] = {
1812 /* Limit transfer size per interrupt. */
1813 { "SAMSUNG CD-ROM SCR-2430", NULL, IDE_CD_FLAG_LIMIT_NFRAMES },
1814 { "SAMSUNG CD-ROM SCR-2432", NULL, IDE_CD_FLAG_LIMIT_NFRAMES },
1815 /* SCR-3231 doesn't support the SET_CD_SPEED command. */
1816 { "SAMSUNG CD-ROM SCR-3231", NULL, IDE_CD_FLAG_NO_SPEED_SELECT },
1817 /* Old NEC260 (not R) was released before ATAPI 1.2 spec. */
1818 { "NEC CD-ROM DRIVE:260", "1.01", IDE_CD_FLAG_TOCADDR_AS_BCD |
1819 IDE_CD_FLAG_PRE_ATAPI12, },
1820 /* Vertos 300, some versions of this drive like to talk BCD. */
1821 { "V003S0DS", NULL, IDE_CD_FLAG_VERTOS_300_SSD, },
1822 /* Vertos 600 ESD. */
1823 { "V006E0DS", NULL, IDE_CD_FLAG_VERTOS_600_ESD, },
1825 * Sanyo 3 CD changer uses a non-standard command for CD changing
1826 * (by default standard ATAPI support for CD changers is used).
1828 { "CD-ROM CDR-C3 G", NULL, IDE_CD_FLAG_SANYO_3CD },
1829 { "CD-ROM CDR-C3G", NULL, IDE_CD_FLAG_SANYO_3CD },
1830 { "CD-ROM CDR_C36", NULL, IDE_CD_FLAG_SANYO_3CD },
1831 /* Stingray 8X CD-ROM. */
1832 { "STINGRAY 8422 IDE 8X CD-ROM 7-27-95", NULL, IDE_CD_FLAG_PRE_ATAPI12},
1834 * ACER 50X CD-ROM and WPI 32X CD-ROM require the full spec length
1835 * mode sense page capabilities size, but older drives break.
1837 { "ATAPI CD ROM DRIVE 50X MAX", NULL, IDE_CD_FLAG_FULL_CAPS_PAGE },
1838 { "WPI CDS-32X", NULL, IDE_CD_FLAG_FULL_CAPS_PAGE },
1839 /* ACER/AOpen 24X CD-ROM has the speed fields byte-swapped. */
1840 { "", "241N", IDE_CD_FLAG_LE_SPEED_FIELDS },
1842 * Some drives used by Apple don't advertise audio play
1843 * but they do support reading TOC & audio datas.
1845 { "MATSHITADVD-ROM SR-8187", NULL, IDE_CD_FLAG_PLAY_AUDIO_OK },
1846 { "MATSHITADVD-ROM SR-8186", NULL, IDE_CD_FLAG_PLAY_AUDIO_OK },
1847 { "MATSHITADVD-ROM SR-8176", NULL, IDE_CD_FLAG_PLAY_AUDIO_OK },
1848 { "MATSHITADVD-ROM SR-8174", NULL, IDE_CD_FLAG_PLAY_AUDIO_OK },
1849 { "Optiarc DVD RW AD-5200A", NULL, IDE_CD_FLAG_PLAY_AUDIO_OK },
1853 static unsigned int ide_cd_flags(struct hd_driveid *id)
1855 const struct cd_list_entry *cle = ide_cd_quirks_list;
1857 while (cle->id_model) {
1858 if (strcmp(cle->id_model, id->model) == 0 &&
1859 (cle->id_firmware == NULL ||
1860 strstr(id->fw_rev, cle->id_firmware)))
1861 return cle->cd_flags;
1868 static int ide_cdrom_setup(ide_drive_t *drive)
1870 struct cdrom_info *cd = drive->driver_data;
1871 struct cdrom_device_info *cdi = &cd->devinfo;
1872 struct hd_driveid *id = drive->id;
1875 blk_queue_prep_rq(drive->queue, ide_cdrom_prep_fn);
1876 blk_queue_dma_alignment(drive->queue, 31);
1877 drive->queue->unplug_delay = (1 * HZ) / 1000;
1878 if (!drive->queue->unplug_delay)
1879 drive->queue->unplug_delay = 1;
1881 drive->special.all = 0;
1883 cd->cd_flags = IDE_CD_FLAG_MEDIA_CHANGED | IDE_CD_FLAG_NO_EJECT |
1886 if ((id->config & 0x0060) == 0x20)
1887 cd->cd_flags |= IDE_CD_FLAG_DRQ_INTERRUPT;
1889 if ((cd->cd_flags & IDE_CD_FLAG_VERTOS_300_SSD) &&
1890 id->fw_rev[4] == '1' && id->fw_rev[6] <= '2')
1891 cd->cd_flags |= (IDE_CD_FLAG_TOCTRACKS_AS_BCD |
1892 IDE_CD_FLAG_TOCADDR_AS_BCD);
1893 else if ((cd->cd_flags & IDE_CD_FLAG_VERTOS_600_ESD) &&
1894 id->fw_rev[4] == '1' && id->fw_rev[6] <= '2')
1895 cd->cd_flags |= IDE_CD_FLAG_TOCTRACKS_AS_BCD;
1896 else if (cd->cd_flags & IDE_CD_FLAG_SANYO_3CD)
1897 /* 3 => use CD in slot 0 */
1898 cdi->sanyo_slot = 3;
1900 nslots = ide_cdrom_probe_capabilities(drive);
1902 /* set correct block size */
1903 blk_queue_hardsect_size(drive->queue, CD_FRAMESIZE);
1905 drive->dsc_overlap = (drive->next != drive);
1907 if (ide_cdrom_register(drive, nslots)) {
1908 printk(KERN_ERR "%s: %s failed to register device with the"
1909 " cdrom driver.\n", drive->name, __func__);
1910 cd->devinfo.handle = NULL;
1913 ide_cdrom_add_settings(drive);
1917 static void ide_cd_remove(ide_drive_t *drive)
1919 struct cdrom_info *info = drive->driver_data;
1921 ide_proc_unregister_driver(drive, info->driver);
1923 del_gendisk(info->disk);
1928 static void ide_cd_release(struct kref *kref)
1930 struct cdrom_info *info = to_ide_cd(kref);
1931 struct cdrom_device_info *devinfo = &info->devinfo;
1932 ide_drive_t *drive = info->drive;
1933 struct gendisk *g = info->disk;
1936 if (devinfo->handle == drive)
1937 unregister_cdrom(devinfo);
1938 drive->dsc_overlap = 0;
1939 drive->driver_data = NULL;
1940 blk_queue_prep_rq(drive->queue, NULL);
1941 g->private_data = NULL;
1946 static int ide_cd_probe(ide_drive_t *);
1948 static ide_driver_t ide_cdrom_driver = {
1950 .owner = THIS_MODULE,
1951 .name = "ide-cdrom",
1952 .bus = &ide_bus_type,
1954 .probe = ide_cd_probe,
1955 .remove = ide_cd_remove,
1956 .version = IDECD_VERSION,
1958 .supports_dsc_overlap = 1,
1959 .do_request = ide_do_rw_cdrom,
1960 .end_request = ide_end_request,
1961 .error = __ide_error,
1962 .abort = __ide_abort,
1963 #ifdef CONFIG_IDE_PROC_FS
1968 static int idecd_open(struct inode *inode, struct file *file)
1970 struct gendisk *disk = inode->i_bdev->bd_disk;
1971 struct cdrom_info *info;
1974 info = ide_cd_get(disk);
1978 rc = cdrom_open(&info->devinfo, inode, file);
1986 static int idecd_release(struct inode *inode, struct file *file)
1988 struct gendisk *disk = inode->i_bdev->bd_disk;
1989 struct cdrom_info *info = ide_cd_g(disk);
1991 cdrom_release(&info->devinfo, file);
1998 static int idecd_set_spindown(struct cdrom_device_info *cdi, unsigned long arg)
2000 struct packet_command cgc;
2005 if (copy_from_user(&spindown, (void __user *)arg, sizeof(char)))
2008 init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_UNKNOWN);
2010 stat = cdrom_mode_sense(cdi, &cgc, GPMODE_CDROM_PAGE, 0);
2014 buffer[11] = (buffer[11] & 0xf0) | (spindown & 0x0f);
2015 return cdrom_mode_select(cdi, &cgc);
2018 static int idecd_get_spindown(struct cdrom_device_info *cdi, unsigned long arg)
2020 struct packet_command cgc;
2025 init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_UNKNOWN);
2027 stat = cdrom_mode_sense(cdi, &cgc, GPMODE_CDROM_PAGE, 0);
2031 spindown = buffer[11] & 0x0f;
2032 if (copy_to_user((void __user *)arg, &spindown, sizeof(char)))
2037 static int idecd_ioctl(struct inode *inode, struct file *file,
2038 unsigned int cmd, unsigned long arg)
2040 struct block_device *bdev = inode->i_bdev;
2041 struct cdrom_info *info = ide_cd_g(bdev->bd_disk);
2045 case CDROMSETSPINDOWN:
2046 return idecd_set_spindown(&info->devinfo, arg);
2047 case CDROMGETSPINDOWN:
2048 return idecd_get_spindown(&info->devinfo, arg);
2053 err = generic_ide_ioctl(info->drive, file, bdev, cmd, arg);
2055 err = cdrom_ioctl(file, &info->devinfo, inode, cmd, arg);
2060 static int idecd_media_changed(struct gendisk *disk)
2062 struct cdrom_info *info = ide_cd_g(disk);
2063 return cdrom_media_changed(&info->devinfo);
2066 static int idecd_revalidate_disk(struct gendisk *disk)
2068 struct cdrom_info *info = ide_cd_g(disk);
2069 struct request_sense sense;
2071 ide_cd_read_toc(info->drive, &sense);
2076 static struct block_device_operations idecd_ops = {
2077 .owner = THIS_MODULE,
2079 .release = idecd_release,
2080 .ioctl = idecd_ioctl,
2081 .media_changed = idecd_media_changed,
2082 .revalidate_disk = idecd_revalidate_disk
2085 /* module options */
2086 static char *ignore;
2088 module_param(ignore, charp, 0400);
2089 MODULE_DESCRIPTION("ATAPI CD-ROM Driver");
2091 static int ide_cd_probe(ide_drive_t *drive)
2093 struct cdrom_info *info;
2095 struct request_sense sense;
2097 if (!strstr("ide-cdrom", drive->driver_req))
2099 if (!drive->present)
2101 if (drive->media != ide_cdrom && drive->media != ide_optical)
2103 /* skip drives that we were told to ignore */
2104 if (ignore != NULL) {
2105 if (strstr(ignore, drive->name)) {
2106 printk(KERN_INFO "ide-cd: ignoring drive %s\n",
2112 printk(KERN_INFO "ide-cd: passing drive %s to ide-scsi "
2113 "emulation.\n", drive->name);
2116 info = kzalloc(sizeof(struct cdrom_info), GFP_KERNEL);
2118 printk(KERN_ERR "%s: Can't allocate a cdrom structure\n",
2123 g = alloc_disk(1 << PARTN_BITS);
2127 ide_init_disk(g, drive);
2129 ide_proc_register_driver(drive, &ide_cdrom_driver);
2131 kref_init(&info->kref);
2133 info->drive = drive;
2134 info->driver = &ide_cdrom_driver;
2137 g->private_data = &info->driver;
2139 drive->driver_data = info;
2142 g->driverfs_dev = &drive->gendev;
2143 g->flags = GENHD_FL_CD | GENHD_FL_REMOVABLE;
2144 if (ide_cdrom_setup(drive)) {
2145 ide_proc_unregister_driver(drive, &ide_cdrom_driver);
2146 ide_cd_release(&info->kref);
2150 ide_cd_read_toc(drive, &sense);
2151 g->fops = &idecd_ops;
2152 g->flags |= GENHD_FL_REMOVABLE;
2162 static void __exit ide_cdrom_exit(void)
2164 driver_unregister(&ide_cdrom_driver.gen_driver);
2167 static int __init ide_cdrom_init(void)
2169 return driver_register(&ide_cdrom_driver.gen_driver);
2172 MODULE_ALIAS("ide:*m-cdrom*");
2173 MODULE_ALIAS("ide-cd");
2174 module_init(ide_cdrom_init);
2175 module_exit(ide_cdrom_exit);
2176 MODULE_LICENSE("GPL");