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 DRV_NAME "ide-cd"
27 #define PFX DRV_NAME ": "
29 #define IDECD_VERSION "5.00"
31 #include <linux/module.h>
32 #include <linux/types.h>
33 #include <linux/kernel.h>
34 #include <linux/delay.h>
35 #include <linux/timer.h>
36 #include <linux/slab.h>
37 #include <linux/interrupt.h>
38 #include <linux/errno.h>
39 #include <linux/cdrom.h>
40 #include <linux/ide.h>
41 #include <linux/completion.h>
42 #include <linux/mutex.h>
43 #include <linux/bcd.h>
45 /* For SCSI -> ATAPI command conversion */
46 #include <scsi/scsi.h>
48 #include <linux/irq.h>
50 #include <asm/byteorder.h>
51 #include <linux/uaccess.h>
52 #include <asm/unaligned.h>
56 #define IDECD_DEBUG_LOG 1
59 #define ide_debug_log(lvl, fmt, args...) __ide_debug_log(lvl, fmt, args)
61 #define ide_debug_log(lvl, fmt, args...) do {} while (0)
64 static DEFINE_MUTEX(idecd_ref_mutex);
66 static void ide_cd_release(struct kref *);
68 static struct cdrom_info *ide_cd_get(struct gendisk *disk)
70 struct cdrom_info *cd = NULL;
72 mutex_lock(&idecd_ref_mutex);
73 cd = ide_drv_g(disk, cdrom_info);
75 if (ide_device_get(cd->drive))
81 mutex_unlock(&idecd_ref_mutex);
85 static void ide_cd_put(struct cdrom_info *cd)
87 ide_drive_t *drive = cd->drive;
89 mutex_lock(&idecd_ref_mutex);
90 kref_put(&cd->kref, ide_cd_release);
91 ide_device_put(drive);
92 mutex_unlock(&idecd_ref_mutex);
96 * Generic packet command support and error handling routines.
99 /* Mark that we've seen a media change and invalidate our internal buffers. */
100 static void cdrom_saw_media_change(ide_drive_t *drive)
102 drive->atapi_flags |= IDE_AFLAG_MEDIA_CHANGED;
103 drive->atapi_flags &= ~IDE_AFLAG_TOC_VALID;
106 static int cdrom_log_sense(ide_drive_t *drive, struct request *rq,
107 struct request_sense *sense)
111 ide_debug_log(IDE_DBG_SENSE, "Call %s, sense_key: 0x%x\n", __func__,
114 if (!sense || !rq || (rq->cmd_flags & REQ_QUIET))
117 switch (sense->sense_key) {
119 case RECOVERED_ERROR:
123 * don't care about tray state messages for e.g. capacity
124 * commands or in-progress or becoming ready
126 if (sense->asc == 0x3a || sense->asc == 0x04)
130 case ILLEGAL_REQUEST:
132 * don't log START_STOP unit with LoEj set, since we cannot
133 * reliably check if drive can auto-close
135 if (rq->cmd[0] == GPCMD_START_STOP_UNIT && sense->asc == 0x24)
141 * Make good and sure we've seen this potential media change.
142 * Some drives (i.e. Creative) fail to present the correct sense
143 * key in the error register.
145 cdrom_saw_media_change(drive);
154 static void cdrom_analyze_sense_data(ide_drive_t *drive,
155 struct request *failed_command,
156 struct request_sense *sense)
158 unsigned long sector;
159 unsigned long bio_sectors;
160 struct cdrom_info *info = drive->driver_data;
162 ide_debug_log(IDE_DBG_SENSE, "Call %s, error_code: 0x%x, "
163 "sense_key: 0x%x\n", __func__, sense->error_code,
167 ide_debug_log(IDE_DBG_SENSE, "%s: failed cmd: 0x%x\n",
168 __func__, failed_command->cmd[0]);
170 if (!cdrom_log_sense(drive, failed_command, sense))
174 * If a read toc is executed for a CD-R or CD-RW medium where the first
175 * toc has not been recorded yet, it will fail with 05/24/00 (which is a
178 if (failed_command && failed_command->cmd[0] == GPCMD_READ_TOC_PMA_ATIP)
179 if (sense->sense_key == 0x05 && sense->asc == 0x24)
183 if (sense->error_code == 0x70) {
184 switch (sense->sense_key) {
186 case VOLUME_OVERFLOW:
187 case ILLEGAL_REQUEST:
190 if (failed_command == NULL ||
191 !blk_fs_request(failed_command))
193 sector = (sense->information[0] << 24) |
194 (sense->information[1] << 16) |
195 (sense->information[2] << 8) |
196 (sense->information[3]);
198 if (drive->queue->hardsect_size == 2048)
199 /* device sector size is 2K */
202 bio_sectors = max(bio_sectors(failed_command->bio), 4U);
203 sector &= ~(bio_sectors - 1);
205 if (sector < get_capacity(info->disk) &&
206 drive->probed_capacity - sector < 4 * 75)
207 set_capacity(info->disk, sector);
211 ide_cd_log_error(drive->name, failed_command, sense);
214 static void cdrom_queue_request_sense(ide_drive_t *drive, void *sense,
215 struct request *failed_command)
217 struct cdrom_info *info = drive->driver_data;
218 struct request *rq = &info->request_sense_request;
220 ide_debug_log(IDE_DBG_SENSE, "Call %s\n", __func__);
223 sense = &info->sense_data;
225 /* stuff the sense request in front of our current request */
226 blk_rq_init(NULL, rq);
227 rq->cmd_type = REQ_TYPE_ATA_PC;
228 rq->rq_disk = info->disk;
231 rq->cmd[0] = GPCMD_REQUEST_SENSE;
235 rq->cmd_type = REQ_TYPE_SENSE;
236 rq->cmd_flags |= REQ_PREEMPT;
238 /* NOTE! Save the failed command in "rq->buffer" */
239 rq->buffer = (void *) failed_command;
242 ide_debug_log(IDE_DBG_SENSE, "failed_cmd: 0x%x\n",
243 failed_command->cmd[0]);
245 ide_do_drive_cmd(drive, rq);
248 static void cdrom_end_request(ide_drive_t *drive, int uptodate)
250 struct request *rq = HWGROUP(drive)->rq;
251 int nsectors = rq->hard_cur_sectors;
253 ide_debug_log(IDE_DBG_FUNC, "Call %s, cmd: 0x%x, uptodate: 0x%x, "
254 "nsectors: %d\n", __func__, rq->cmd[0], uptodate,
257 if (blk_sense_request(rq) && uptodate) {
259 * For REQ_TYPE_SENSE, "rq->buffer" points to the original
262 struct request *failed = (struct request *) rq->buffer;
263 struct cdrom_info *info = drive->driver_data;
264 void *sense = &info->sense_data;
269 sense = failed->sense;
270 failed->sense_len = rq->sense_len;
272 cdrom_analyze_sense_data(drive, failed, sense);
274 * now end the failed request
276 if (blk_fs_request(failed)) {
277 if (ide_end_dequeued_request(drive, failed, 0,
278 failed->hard_nr_sectors))
281 spin_lock_irqsave(&ide_lock, flags);
282 if (__blk_end_request(failed, -EIO,
285 spin_unlock_irqrestore(&ide_lock, flags);
288 cdrom_analyze_sense_data(drive, NULL, sense);
291 if (!rq->current_nr_sectors && blk_fs_request(rq))
293 /* make sure it's fully ended */
294 if (blk_pc_request(rq))
295 nsectors = (rq->data_len + 511) >> 9;
299 ide_debug_log(IDE_DBG_FUNC, "Exit %s, uptodate: 0x%x, nsectors: %d\n",
300 __func__, uptodate, nsectors);
302 ide_end_request(drive, uptodate, nsectors);
305 static void ide_dump_status_no_sense(ide_drive_t *drive, const char *msg, u8 st)
309 ide_dump_status(drive, msg, st);
314 * 0: if the request should be continued.
315 * 1: if the request was ended.
317 static int cdrom_decode_status(ide_drive_t *drive, int good_stat, int *stat_ret)
319 ide_hwif_t *hwif = drive->hwif;
320 struct request *rq = hwif->hwgroup->rq;
321 int stat, err, sense_key;
323 /* check for errors */
324 stat = hwif->tp_ops->read_status(hwif);
329 if (OK_STAT(stat, good_stat, BAD_R_STAT))
332 /* get the IDE error register */
333 err = ide_read_error(drive);
334 sense_key = err >> 4;
337 printk(KERN_ERR PFX "%s: missing rq in %s\n",
338 drive->name, __func__);
342 ide_debug_log(IDE_DBG_RQ, "%s: stat: 0x%x, good_stat: 0x%x, "
343 "rq->cmd_type: 0x%x, err: 0x%x\n", __func__, stat,
344 good_stat, rq->cmd_type, err);
346 if (blk_sense_request(rq)) {
348 * We got an error trying to get sense info from the drive
349 * (probably while trying to recover from a former error).
352 rq->cmd_flags |= REQ_FAILED;
353 cdrom_end_request(drive, 0);
354 ide_error(drive, "request sense failure", stat);
357 } else if (blk_pc_request(rq) || rq->cmd_type == REQ_TYPE_ATA_PC) {
358 /* All other functions, except for READ. */
361 * if we have an error, pass back CHECK_CONDITION as the
364 if (blk_pc_request(rq) && !rq->errors)
365 rq->errors = SAM_STAT_CHECK_CONDITION;
367 /* check for tray open */
368 if (sense_key == NOT_READY) {
369 cdrom_saw_media_change(drive);
370 } else if (sense_key == UNIT_ATTENTION) {
371 /* check for media change */
372 cdrom_saw_media_change(drive);
374 } else if (sense_key == ILLEGAL_REQUEST &&
375 rq->cmd[0] == GPCMD_START_STOP_UNIT) {
377 * Don't print error message for this condition--
378 * SFF8090i indicates that 5/24/00 is the correct
379 * response to a request to close the tray if the
380 * drive doesn't have that capability.
381 * cdrom_log_sense() knows this!
383 } else if (!(rq->cmd_flags & REQ_QUIET)) {
384 /* otherwise, print an error */
385 ide_dump_status(drive, "packet command error", stat);
388 rq->cmd_flags |= REQ_FAILED;
391 * instead of playing games with moving completions around,
392 * remove failed request completely and end it when the
393 * request sense has completed
397 } else if (blk_fs_request(rq)) {
398 int do_end_request = 0;
400 /* handle errors from READ and WRITE requests */
402 if (blk_noretry_request(rq))
405 if (sense_key == NOT_READY) {
407 if (rq_data_dir(rq) == READ) {
408 cdrom_saw_media_change(drive);
410 /* fail the request */
411 printk(KERN_ERR PFX "%s: tray open\n",
415 struct cdrom_info *info = drive->driver_data;
418 * Allow the drive 5 seconds to recover, some
419 * devices will return this error while flushing
423 info->write_timeout = jiffies +
424 ATAPI_WAIT_WRITE_BUSY;
426 if (time_after(jiffies, info->write_timeout))
432 * take a breather relying on the unplug
433 * timer to kick us again
435 spin_lock_irqsave(&ide_lock, flags);
436 blk_plug_device(drive->queue);
437 spin_unlock_irqrestore(&ide_lock,
442 } else if (sense_key == UNIT_ATTENTION) {
444 cdrom_saw_media_change(drive);
447 * Arrange to retry the request but be sure to give up
448 * if we've retried too many times.
450 if (++rq->errors > ERROR_MAX)
452 } else if (sense_key == ILLEGAL_REQUEST ||
453 sense_key == DATA_PROTECT) {
455 * No point in retrying after an illegal request or data
458 ide_dump_status_no_sense(drive, "command error", stat);
460 } else if (sense_key == MEDIUM_ERROR) {
462 * No point in re-trying a zillion times on a bad
463 * sector. If we got here the error is not correctable.
465 ide_dump_status_no_sense(drive,
466 "media error (bad sector)",
469 } else if (sense_key == BLANK_CHECK) {
470 /* disk appears blank ?? */
471 ide_dump_status_no_sense(drive, "media error (blank)",
474 } else if ((err & ~ATA_ABORTED) != 0) {
475 /* go to the default handler for other errors */
476 ide_error(drive, "cdrom_decode_status", stat);
478 } else if ((++rq->errors > ERROR_MAX)) {
479 /* we've racked up too many retries, abort */
484 * End a request through request sense analysis when we have
485 * sense data. We need this in order to perform end of media
492 * If we got a CHECK_CONDITION status, queue
493 * a request sense command.
496 cdrom_queue_request_sense(drive, NULL, NULL);
498 blk_dump_rq_flags(rq, PFX "bad rq");
499 cdrom_end_request(drive, 0);
502 /* retry, or handle the next request */
506 if (stat & ATA_ERR) {
509 spin_lock_irqsave(&ide_lock, flags);
510 blkdev_dequeue_request(rq);
511 HWGROUP(drive)->rq = NULL;
512 spin_unlock_irqrestore(&ide_lock, flags);
514 cdrom_queue_request_sense(drive, rq->sense, rq);
516 cdrom_end_request(drive, 0);
521 static int cdrom_timer_expiry(ide_drive_t *drive)
523 struct request *rq = HWGROUP(drive)->rq;
524 unsigned long wait = 0;
526 ide_debug_log(IDE_DBG_RQ, "Call %s: rq->cmd[0]: 0x%x\n", __func__,
530 * Some commands are *slow* and normally take a long time to complete.
531 * Usually we can use the ATAPI "disconnect" to bypass this, but not all
532 * commands/drives support that. Let ide_timer_expiry keep polling us
535 switch (rq->cmd[0]) {
537 case GPCMD_FORMAT_UNIT:
538 case GPCMD_RESERVE_RZONE_TRACK:
539 case GPCMD_CLOSE_TRACK:
540 case GPCMD_FLUSH_CACHE:
541 wait = ATAPI_WAIT_PC;
544 if (!(rq->cmd_flags & REQ_QUIET))
545 printk(KERN_INFO PFX "cmd 0x%x timed out\n",
554 * Set up the device registers for transferring a packet command on DEV,
555 * expecting to later transfer XFERLEN bytes. HANDLER is the routine
556 * which actually transfers the command to the drive. If this is a
557 * drq_interrupt device, this routine will arrange for HANDLER to be
558 * called when the interrupt from the drive arrives. Otherwise, HANDLER
559 * will be called immediately after the drive is prepared for the transfer.
561 static ide_startstop_t cdrom_start_packet_command(ide_drive_t *drive,
563 ide_handler_t *handler)
565 struct cdrom_info *info = drive->driver_data;
566 ide_hwif_t *hwif = drive->hwif;
568 ide_debug_log(IDE_DBG_PC, "Call %s, xferlen: %d\n", __func__, xferlen);
570 /* FIXME: for Virtual DMA we must check harder */
572 info->dma = !hwif->dma_ops->dma_setup(drive);
574 /* set up the controller registers */
575 ide_pktcmd_tf_load(drive, IDE_TFLAG_OUT_NSECT | IDE_TFLAG_OUT_LBAL,
578 if (drive->atapi_flags & IDE_AFLAG_DRQ_INTERRUPT) {
579 /* waiting for CDB interrupt, not DMA yet. */
581 drive->waiting_for_dma = 0;
584 ide_execute_command(drive, ATA_CMD_PACKET, handler,
585 ATAPI_WAIT_PC, cdrom_timer_expiry);
588 ide_execute_pkt_cmd(drive);
590 return (*handler) (drive);
595 * Send a packet command to DRIVE described by CMD_BUF and CMD_LEN. The device
596 * registers must have already been prepared by cdrom_start_packet_command.
597 * HANDLER is the interrupt handler to call when the command completes or
598 * there's data ready.
600 #define ATAPI_MIN_CDB_BYTES 12
601 static ide_startstop_t cdrom_transfer_packet_command(ide_drive_t *drive,
603 ide_handler_t *handler)
605 ide_hwif_t *hwif = drive->hwif;
607 struct cdrom_info *info = drive->driver_data;
608 ide_startstop_t startstop;
610 ide_debug_log(IDE_DBG_PC, "Call %s\n", __func__);
612 if (drive->atapi_flags & IDE_AFLAG_DRQ_INTERRUPT) {
614 * Here we should have been called after receiving an interrupt
615 * from the device. DRQ should how be set.
618 /* check for errors */
619 if (cdrom_decode_status(drive, ATA_DRQ, NULL))
622 /* ok, next interrupt will be DMA interrupt */
624 drive->waiting_for_dma = 1;
626 /* otherwise, we must wait for DRQ to get set */
627 if (ide_wait_stat(&startstop, drive, ATA_DRQ,
628 ATA_BUSY, WAIT_READY))
632 /* arm the interrupt handler */
633 ide_set_handler(drive, handler, rq->timeout, cdrom_timer_expiry);
635 /* ATAPI commands get padded out to 12 bytes minimum */
636 cmd_len = COMMAND_SIZE(rq->cmd[0]);
637 if (cmd_len < ATAPI_MIN_CDB_BYTES)
638 cmd_len = ATAPI_MIN_CDB_BYTES;
640 /* send the command to the device */
641 hwif->tp_ops->output_data(drive, NULL, rq->cmd, cmd_len);
643 /* start the DMA if need be */
645 hwif->dma_ops->dma_start(drive);
651 * Check the contents of the interrupt reason register from the cdrom
652 * and attempt to recover if there are problems. Returns 0 if everything's
653 * ok; nonzero if the request has been terminated.
655 static int ide_cd_check_ireason(ide_drive_t *drive, struct request *rq,
656 int len, int ireason, int rw)
658 ide_hwif_t *hwif = drive->hwif;
660 ide_debug_log(IDE_DBG_FUNC, "Call %s, ireason: 0x%x, rw: 0x%x\n",
661 __func__, ireason, rw);
664 * ireason == 0: the drive wants to receive data from us
665 * ireason == 2: the drive is expecting to transfer data to us
667 if (ireason == (!rw << 1))
669 else if (ireason == (rw << 1)) {
672 printk(KERN_ERR PFX "%s: %s: wrong transfer direction!\n",
673 drive->name, __func__);
675 ide_pad_transfer(drive, rw, len);
676 } else if (rw == 0 && ireason == 1) {
678 * Some drives (ASUS) seem to tell us that status info is
679 * available. Just get it and ignore.
681 (void)hwif->tp_ops->read_status(hwif);
684 /* drive wants a command packet, or invalid ireason... */
685 printk(KERN_ERR PFX "%s: %s: bad interrupt reason 0x%02x\n",
686 drive->name, __func__, ireason);
689 if (rq->cmd_type == REQ_TYPE_ATA_PC)
690 rq->cmd_flags |= REQ_FAILED;
692 cdrom_end_request(drive, 0);
697 * Assume that the drive will always provide data in multiples of at least
698 * SECTOR_SIZE, as it gets hairy to keep track of the transfers otherwise.
700 static int ide_cd_check_transfer_size(ide_drive_t *drive, int len)
702 ide_debug_log(IDE_DBG_FUNC, "Call %s, len: %d\n", __func__, len);
704 if ((len % SECTOR_SIZE) == 0)
707 printk(KERN_ERR PFX "%s: %s: Bad transfer size %d\n", drive->name,
710 if (drive->atapi_flags & IDE_AFLAG_LIMIT_NFRAMES)
711 printk(KERN_ERR PFX "This drive is not supported by this "
712 "version of the driver\n");
714 printk(KERN_ERR PFX "Trying to limit transfer sizes\n");
715 drive->atapi_flags |= IDE_AFLAG_LIMIT_NFRAMES;
721 static ide_startstop_t cdrom_newpc_intr(ide_drive_t *);
723 static ide_startstop_t ide_cd_prepare_rw_request(ide_drive_t *drive,
726 ide_debug_log(IDE_DBG_RQ, "Call %s: rq->cmd_flags: 0x%x\n", __func__,
729 if (rq_data_dir(rq) == READ) {
730 unsigned short sectors_per_frame =
731 queue_hardsect_size(drive->queue) >> SECTOR_BITS;
732 int nskip = rq->sector & (sectors_per_frame - 1);
735 * If the requested sector doesn't start on a frame boundary,
736 * we must adjust the start of the transfer so that it does,
737 * and remember to skip the first few sectors.
739 * If the rq->current_nr_sectors field is larger than the size
740 * of the buffer, it will mean that we're to skip a number of
741 * sectors equal to the amount by which rq->current_nr_sectors
742 * is larger than the buffer size.
745 /* sanity check... */
746 if (rq->current_nr_sectors !=
747 bio_cur_sectors(rq->bio)) {
748 printk(KERN_ERR PFX "%s: %s: buffer botch (%u)\n",
749 drive->name, __func__,
750 rq->current_nr_sectors);
751 cdrom_end_request(drive, 0);
754 rq->current_nr_sectors += nskip;
758 /* set up the command */
759 rq->timeout = ATAPI_WAIT_PC;
765 * Routine to send a read/write packet command to the drive. This is usually
766 * called directly from cdrom_start_{read,write}(). However, for drq_interrupt
767 * devices, it is called from an interrupt when the drive is ready to accept
770 static ide_startstop_t cdrom_start_rw_cont(ide_drive_t *drive)
772 struct request *rq = drive->hwif->hwgroup->rq;
774 /* send the command to the drive and return */
775 return cdrom_transfer_packet_command(drive, rq, cdrom_newpc_intr);
778 #define IDECD_SEEK_THRESHOLD (1000) /* 1000 blocks */
779 #define IDECD_SEEK_TIMER (5 * WAIT_MIN_SLEEP) /* 100 ms */
780 #define IDECD_SEEK_TIMEOUT (2 * WAIT_CMD) /* 20 sec */
782 static ide_startstop_t cdrom_seek_intr(ide_drive_t *drive)
784 struct cdrom_info *info = drive->driver_data;
786 static int retry = 10;
788 ide_debug_log(IDE_DBG_FUNC, "Call %s\n", __func__);
790 if (cdrom_decode_status(drive, 0, &stat))
793 drive->atapi_flags |= IDE_AFLAG_SEEKING;
795 if (retry && time_after(jiffies, info->start_seek + IDECD_SEEK_TIMER)) {
797 drive->dev_flags &= ~IDE_DFLAG_DSC_OVERLAP;
802 static void ide_cd_prepare_seek_request(ide_drive_t *drive, struct request *rq)
804 sector_t frame = rq->sector;
806 ide_debug_log(IDE_DBG_FUNC, "Call %s\n", __func__);
808 sector_div(frame, queue_hardsect_size(drive->queue) >> SECTOR_BITS);
810 memset(rq->cmd, 0, BLK_MAX_CDB);
811 rq->cmd[0] = GPCMD_SEEK;
812 put_unaligned(cpu_to_be32(frame), (unsigned int *) &rq->cmd[2]);
814 rq->timeout = ATAPI_WAIT_PC;
817 static ide_startstop_t cdrom_start_seek_continuation(ide_drive_t *drive)
819 struct request *rq = drive->hwif->hwgroup->rq;
821 return cdrom_transfer_packet_command(drive, rq, &cdrom_seek_intr);
825 * Fix up a possibly partially-processed request so that we can start it over
826 * entirely, or even put it back on the request queue.
828 static void ide_cd_restore_request(ide_drive_t *drive, struct request *rq)
831 ide_debug_log(IDE_DBG_FUNC, "Call %s\n", __func__);
833 if (rq->buffer != bio_data(rq->bio)) {
835 (rq->buffer - (char *)bio_data(rq->bio)) / SECTOR_SIZE;
837 rq->buffer = bio_data(rq->bio);
841 rq->current_nr_sectors = bio_cur_sectors(rq->bio);
842 rq->hard_cur_sectors = rq->current_nr_sectors;
843 rq->hard_nr_sectors = rq->nr_sectors;
844 rq->hard_sector = rq->sector;
845 rq->q->prep_rq_fn(rq->q, rq);
849 * All other packet commands.
851 static void ide_cd_request_sense_fixup(ide_drive_t *drive, struct request *rq)
854 ide_debug_log(IDE_DBG_FUNC, "Call %s\n", __func__);
857 * Some of the trailing request sense fields are optional,
858 * and some drives don't send them. Sigh.
860 if (rq->cmd[0] == GPCMD_REQUEST_SENSE &&
861 rq->data_len > 0 && rq->data_len <= 5)
862 while (rq->data_len > 0) {
863 *(u8 *)rq->data++ = 0;
868 int ide_cd_queue_pc(ide_drive_t *drive, const unsigned char *cmd,
869 int write, void *buffer, unsigned *bufflen,
870 struct request_sense *sense, int timeout,
871 unsigned int cmd_flags)
873 struct cdrom_info *info = drive->driver_data;
874 struct request_sense local_sense;
876 unsigned int flags = 0;
879 sense = &local_sense;
881 ide_debug_log(IDE_DBG_PC, "Call %s, rq->cmd[0]: 0x%x, write: 0x%x, "
882 "timeout: %d, cmd_flags: 0x%x\n", __func__, cmd[0], write,
885 /* start of retry loop */
890 rq = blk_get_request(drive->queue, write, __GFP_WAIT);
892 memcpy(rq->cmd, cmd, BLK_MAX_CDB);
893 rq->cmd_type = REQ_TYPE_ATA_PC;
895 rq->cmd_flags |= cmd_flags;
896 rq->timeout = timeout;
899 rq->data_len = *bufflen;
902 error = blk_execute_rq(drive->queue, info->disk, rq, 0);
905 *bufflen = rq->data_len;
907 flags = rq->cmd_flags;
911 * FIXME: we should probably abort/retry or something in case of
914 if (flags & REQ_FAILED) {
916 * The request failed. Retry if it was due to a unit
917 * attention status (usually means media was changed).
919 struct request_sense *reqbuf = sense;
921 if (reqbuf->sense_key == UNIT_ATTENTION)
922 cdrom_saw_media_change(drive);
923 else if (reqbuf->sense_key == NOT_READY &&
924 reqbuf->asc == 4 && reqbuf->ascq != 4) {
926 * The drive is in the process of loading
927 * a disk. Retry, but wait a little to give
928 * the drive time to complete the load.
932 /* otherwise, don't retry */
938 /* end of retry loop */
939 } while ((flags & REQ_FAILED) && retries >= 0);
941 /* return an error if the command failed */
942 return (flags & REQ_FAILED) ? -EIO : 0;
946 * Called from blk_end_request_callback() after the data of the request is
947 * completed and before the request itself is completed. By returning value '1',
948 * blk_end_request_callback() returns immediately without completing it.
950 static int cdrom_newpc_intr_dummy_cb(struct request *rq)
955 static ide_startstop_t cdrom_newpc_intr(ide_drive_t *drive)
957 ide_hwif_t *hwif = drive->hwif;
958 struct cdrom_info *info = drive->driver_data;
959 struct request *rq = HWGROUP(drive)->rq;
960 xfer_func_t *xferfunc;
961 ide_expiry_t *expiry = NULL;
962 int dma_error = 0, dma, stat, thislen, uptodate = 0;
963 int write = (rq_data_dir(rq) == WRITE) ? 1 : 0;
964 unsigned int timeout;
968 ide_debug_log(IDE_DBG_PC, "Call %s, rq->cmd[0]: 0x%x, write: 0x%x\n",
969 __func__, rq->cmd[0], write);
971 /* check for errors */
975 dma_error = hwif->dma_ops->dma_end(drive);
977 printk(KERN_ERR PFX "%s: DMA %s error\n", drive->name,
978 write ? "write" : "read");
983 if (cdrom_decode_status(drive, 0, &stat))
986 /* using dma, transfer is complete now */
989 return ide_error(drive, "dma error", stat);
990 if (blk_fs_request(rq)) {
991 ide_end_request(drive, 1, rq->nr_sectors);
997 ide_read_bcount_and_ireason(drive, &len, &ireason);
999 thislen = blk_fs_request(rq) ? len : rq->data_len;
1003 ide_debug_log(IDE_DBG_PC, "%s: DRQ: stat: 0x%x, thislen: %d\n",
1004 __func__, stat, thislen);
1006 /* If DRQ is clear, the command has completed. */
1007 if ((stat & ATA_DRQ) == 0) {
1008 if (blk_fs_request(rq)) {
1010 * If we're not done reading/writing, complain.
1011 * Otherwise, complete the command normally.
1014 if (rq->current_nr_sectors > 0) {
1015 printk(KERN_ERR PFX "%s: %s: data underrun "
1017 drive->name, __func__,
1018 rq->current_nr_sectors);
1020 rq->cmd_flags |= REQ_FAILED;
1023 cdrom_end_request(drive, uptodate);
1025 } else if (!blk_pc_request(rq)) {
1026 ide_cd_request_sense_fixup(drive, rq);
1027 /* complain if we still have data left to transfer */
1028 uptodate = rq->data_len ? 0 : 1;
1033 /* check which way to transfer data */
1034 if (ide_cd_check_ireason(drive, rq, len, ireason, write))
1037 if (blk_fs_request(rq)) {
1041 if (ide_cd_check_transfer_size(drive, len)) {
1042 cdrom_end_request(drive, 0);
1047 * First, figure out if we need to bit-bucket
1048 * any of the leading sectors.
1050 nskip = min_t(int, rq->current_nr_sectors
1051 - bio_cur_sectors(rq->bio),
1054 ide_pad_transfer(drive, write, nskip << 9);
1055 rq->current_nr_sectors -= nskip;
1056 thislen -= (nskip << 9);
1063 xferfunc = hwif->tp_ops->output_data;
1066 xferfunc = hwif->tp_ops->input_data;
1069 ide_debug_log(IDE_DBG_PC, "%s: data transfer, rq->cmd_type: 0x%x, "
1070 "ireason: 0x%x\n", __func__, rq->cmd_type, ireason);
1073 while (thislen > 0) {
1074 u8 *ptr = blk_fs_request(rq) ? NULL : rq->data;
1075 int blen = rq->data_len;
1079 if (blk_fs_request(rq)) {
1081 blen = rq->current_nr_sectors << 9;
1083 ptr = bio_data(rq->bio);
1084 blen = bio_iovec(rq->bio)->bv_len;
1089 if (blk_fs_request(rq) && !write)
1091 * If the buffers are full, pipe the rest into
1094 ide_pad_transfer(drive, 0, thislen);
1096 printk(KERN_ERR PFX "%s: confused, missing data\n",
1098 blk_dump_rq_flags(rq, rq_data_dir(rq)
1099 ? "cdrom_newpc_intr, write"
1100 : "cdrom_newpc_intr, read");
1108 xferfunc(drive, NULL, ptr, blen);
1113 if (blk_fs_request(rq)) {
1115 rq->nr_sectors -= (blen >> 9);
1116 rq->current_nr_sectors -= (blen >> 9);
1117 rq->sector += (blen >> 9);
1119 if (rq->current_nr_sectors == 0 && rq->nr_sectors)
1120 cdrom_end_request(drive, 1);
1122 rq->data_len -= blen;
1125 * The request can't be completed until DRQ is cleared.
1126 * So complete the data, but don't complete the request
1127 * using the dummy function for the callback feature
1128 * of blk_end_request_callback().
1131 blk_end_request_callback(rq, 0, blen,
1132 cdrom_newpc_intr_dummy_cb);
1136 if (!write && blk_sense_request(rq))
1137 rq->sense_len += blen;
1140 /* pad, if necessary */
1141 if (!blk_fs_request(rq) && len > 0)
1142 ide_pad_transfer(drive, write, len);
1144 if (blk_pc_request(rq)) {
1145 timeout = rq->timeout;
1147 timeout = ATAPI_WAIT_PC;
1148 if (!blk_fs_request(rq))
1149 expiry = cdrom_timer_expiry;
1152 ide_set_handler(drive, cdrom_newpc_intr, timeout, expiry);
1156 if (blk_pc_request(rq)) {
1157 unsigned long flags;
1158 unsigned int dlen = rq->data_len;
1163 spin_lock_irqsave(&ide_lock, flags);
1164 if (__blk_end_request(rq, 0, dlen))
1166 HWGROUP(drive)->rq = NULL;
1167 spin_unlock_irqrestore(&ide_lock, flags);
1170 rq->cmd_flags |= REQ_FAILED;
1171 cdrom_end_request(drive, uptodate);
1176 static ide_startstop_t cdrom_start_rw(ide_drive_t *drive, struct request *rq)
1178 struct cdrom_info *cd = drive->driver_data;
1179 int write = rq_data_dir(rq) == WRITE;
1180 unsigned short sectors_per_frame =
1181 queue_hardsect_size(drive->queue) >> SECTOR_BITS;
1183 ide_debug_log(IDE_DBG_RQ, "Call %s, write: 0x%x, secs_per_frame: %u\n",
1184 __func__, write, sectors_per_frame);
1187 /* disk has become write protected */
1188 if (get_disk_ro(cd->disk)) {
1189 cdrom_end_request(drive, 0);
1194 * We may be retrying this request after an error. Fix up any
1195 * weirdness which might be present in the request packet.
1197 ide_cd_restore_request(drive, rq);
1200 /* use DMA, if possible / writes *must* be hardware frame aligned */
1201 if ((rq->nr_sectors & (sectors_per_frame - 1)) ||
1202 (rq->sector & (sectors_per_frame - 1))) {
1204 cdrom_end_request(drive, 0);
1209 cd->dma = !!(drive->dev_flags & IDE_DFLAG_USING_DMA);
1212 cd->devinfo.media_written = 1;
1217 static ide_startstop_t cdrom_do_newpc_cont(ide_drive_t *drive)
1219 struct request *rq = HWGROUP(drive)->rq;
1221 return cdrom_transfer_packet_command(drive, rq, cdrom_newpc_intr);
1224 static void cdrom_do_block_pc(ide_drive_t *drive, struct request *rq)
1226 struct cdrom_info *info = drive->driver_data;
1228 ide_debug_log(IDE_DBG_PC, "Call %s, rq->cmd_type: 0x%x\n", __func__,
1231 if (blk_pc_request(rq))
1232 rq->cmd_flags |= REQ_QUIET;
1234 rq->cmd_flags &= ~REQ_FAILED;
1239 if (rq->bio || ((rq->cmd_type == REQ_TYPE_ATA_PC) && rq->data_len)) {
1240 struct request_queue *q = drive->queue;
1241 unsigned int alignment;
1245 buf = bio_data(rq->bio);
1249 info->dma = !!(drive->dev_flags & IDE_DFLAG_USING_DMA);
1252 * check if dma is safe
1254 * NOTE! The "len" and "addr" checks should possibly have
1257 alignment = queue_dma_alignment(q) | q->dma_pad_mask;
1258 if ((unsigned long)buf & alignment || rq->data_len & alignment
1259 || object_is_on_stack(buf))
1265 * cdrom driver request routine.
1267 static ide_startstop_t ide_cd_do_request(ide_drive_t *drive, struct request *rq,
1270 struct cdrom_info *info = drive->driver_data;
1274 ide_debug_log(IDE_DBG_RQ, "Call %s, rq->cmd_type: 0x%x, block: %llu\n",
1275 __func__, rq->cmd_type, (u64)block);
1277 if (blk_fs_request(rq)) {
1278 if (drive->atapi_flags & IDE_AFLAG_SEEKING) {
1279 ide_hwif_t *hwif = drive->hwif;
1280 unsigned long elapsed = jiffies - info->start_seek;
1281 int stat = hwif->tp_ops->read_status(hwif);
1283 if ((stat & ATA_DSC) != ATA_DSC) {
1284 if (elapsed < IDECD_SEEK_TIMEOUT) {
1285 ide_stall_queue(drive,
1289 printk(KERN_ERR PFX "%s: DSC timeout\n",
1292 drive->atapi_flags &= ~IDE_AFLAG_SEEKING;
1294 if (rq_data_dir(rq) == READ &&
1295 IDE_LARGE_SEEK(info->last_block, block,
1296 IDECD_SEEK_THRESHOLD) &&
1297 (drive->dev_flags & IDE_DFLAG_DSC_OVERLAP)) {
1299 fn = cdrom_start_seek_continuation;
1302 info->start_seek = jiffies;
1304 ide_cd_prepare_seek_request(drive, rq);
1307 fn = cdrom_start_rw_cont;
1309 if (cdrom_start_rw(drive, rq) == ide_stopped)
1312 if (ide_cd_prepare_rw_request(drive, rq) == ide_stopped)
1315 info->last_block = block;
1316 } else if (blk_sense_request(rq) || blk_pc_request(rq) ||
1317 rq->cmd_type == REQ_TYPE_ATA_PC) {
1318 xferlen = rq->data_len;
1319 fn = cdrom_do_newpc_cont;
1322 rq->timeout = ATAPI_WAIT_PC;
1324 cdrom_do_block_pc(drive, rq);
1325 } else if (blk_special_request(rq)) {
1326 /* right now this can only be a reset... */
1327 cdrom_end_request(drive, 1);
1330 blk_dump_rq_flags(rq, DRV_NAME " bad flags");
1331 cdrom_end_request(drive, 0);
1335 return cdrom_start_packet_command(drive, xferlen, fn);
1341 * Routines which queue packet commands take as a final argument a pointer to a
1342 * request_sense struct. If execution of the command results in an error with a
1343 * CHECK CONDITION status, this structure will be filled with the results of the
1344 * subsequent request sense command. The pointer can also be NULL, in which case
1345 * no sense information is returned.
1347 static void msf_from_bcd(struct atapi_msf *msf)
1349 msf->minute = bcd2bin(msf->minute);
1350 msf->second = bcd2bin(msf->second);
1351 msf->frame = bcd2bin(msf->frame);
1354 int cdrom_check_status(ide_drive_t *drive, struct request_sense *sense)
1356 struct cdrom_info *info = drive->driver_data;
1357 struct cdrom_device_info *cdi = &info->devinfo;
1358 unsigned char cmd[BLK_MAX_CDB];
1360 ide_debug_log(IDE_DBG_FUNC, "Call %s\n", __func__);
1362 memset(cmd, 0, BLK_MAX_CDB);
1363 cmd[0] = GPCMD_TEST_UNIT_READY;
1366 * Sanyo 3 CD changer uses byte 7 of TEST_UNIT_READY to switch CDs
1367 * instead of supporting the LOAD_UNLOAD opcode.
1369 cmd[7] = cdi->sanyo_slot % 3;
1371 return ide_cd_queue_pc(drive, cmd, 0, NULL, NULL, sense, 0, REQ_QUIET);
1374 static int cdrom_read_capacity(ide_drive_t *drive, unsigned long *capacity,
1375 unsigned long *sectors_per_frame,
1376 struct request_sense *sense)
1384 unsigned char cmd[BLK_MAX_CDB];
1385 unsigned len = sizeof(capbuf);
1388 ide_debug_log(IDE_DBG_FUNC, "Call %s\n", __func__);
1390 memset(cmd, 0, BLK_MAX_CDB);
1391 cmd[0] = GPCMD_READ_CDVD_CAPACITY;
1393 stat = ide_cd_queue_pc(drive, cmd, 0, &capbuf, &len, sense, 0,
1399 * Sanity check the given block size
1401 blocklen = be32_to_cpu(capbuf.blocklen);
1409 printk(KERN_ERR PFX "%s: weird block size %u\n",
1410 drive->name, blocklen);
1411 printk(KERN_ERR PFX "%s: default to 2kb block size\n",
1417 *capacity = 1 + be32_to_cpu(capbuf.lba);
1418 *sectors_per_frame = blocklen >> SECTOR_BITS;
1422 static int cdrom_read_tocentry(ide_drive_t *drive, int trackno, int msf_flag,
1423 int format, char *buf, int buflen,
1424 struct request_sense *sense)
1426 unsigned char cmd[BLK_MAX_CDB];
1428 ide_debug_log(IDE_DBG_FUNC, "Call %s\n", __func__);
1430 memset(cmd, 0, BLK_MAX_CDB);
1432 cmd[0] = GPCMD_READ_TOC_PMA_ATIP;
1434 cmd[7] = (buflen >> 8);
1435 cmd[8] = (buflen & 0xff);
1436 cmd[9] = (format << 6);
1441 return ide_cd_queue_pc(drive, cmd, 0, buf, &buflen, sense, 0, REQ_QUIET);
1444 /* Try to read the entire TOC for the disk into our internal buffer. */
1445 int ide_cd_read_toc(ide_drive_t *drive, struct request_sense *sense)
1447 int stat, ntracks, i;
1448 struct cdrom_info *info = drive->driver_data;
1449 struct cdrom_device_info *cdi = &info->devinfo;
1450 struct atapi_toc *toc = info->toc;
1452 struct atapi_toc_header hdr;
1453 struct atapi_toc_entry ent;
1456 unsigned long sectors_per_frame = SECTORS_PER_FRAME;
1458 ide_debug_log(IDE_DBG_FUNC, "Call %s\n", __func__);
1461 /* try to allocate space */
1462 toc = kmalloc(sizeof(struct atapi_toc), GFP_KERNEL);
1464 printk(KERN_ERR PFX "%s: No cdrom TOC buffer!\n",
1472 * Check to see if the existing data is still valid. If it is,
1475 (void) cdrom_check_status(drive, sense);
1477 if (drive->atapi_flags & IDE_AFLAG_TOC_VALID)
1480 /* try to get the total cdrom capacity and sector size */
1481 stat = cdrom_read_capacity(drive, &toc->capacity, §ors_per_frame,
1484 toc->capacity = 0x1fffff;
1486 set_capacity(info->disk, toc->capacity * sectors_per_frame);
1487 /* save a private copy of the TOC capacity for error handling */
1488 drive->probed_capacity = toc->capacity * sectors_per_frame;
1490 blk_queue_hardsect_size(drive->queue,
1491 sectors_per_frame << SECTOR_BITS);
1493 /* first read just the header, so we know how long the TOC is */
1494 stat = cdrom_read_tocentry(drive, 0, 1, 0, (char *) &toc->hdr,
1495 sizeof(struct atapi_toc_header), sense);
1499 if (drive->atapi_flags & IDE_AFLAG_TOCTRACKS_AS_BCD) {
1500 toc->hdr.first_track = bcd2bin(toc->hdr.first_track);
1501 toc->hdr.last_track = bcd2bin(toc->hdr.last_track);
1504 ntracks = toc->hdr.last_track - toc->hdr.first_track + 1;
1507 if (ntracks > MAX_TRACKS)
1508 ntracks = MAX_TRACKS;
1510 /* now read the whole schmeer */
1511 stat = cdrom_read_tocentry(drive, toc->hdr.first_track, 1, 0,
1513 sizeof(struct atapi_toc_header) +
1515 sizeof(struct atapi_toc_entry), sense);
1517 if (stat && toc->hdr.first_track > 1) {
1519 * Cds with CDI tracks only don't have any TOC entries, despite
1520 * of this the returned values are
1521 * first_track == last_track = number of CDI tracks + 1,
1522 * so that this case is indistinguishable from the same layout
1523 * plus an additional audio track. If we get an error for the
1524 * regular case, we assume a CDI without additional audio
1525 * tracks. In this case the readable TOC is empty (CDI tracks
1526 * are not included) and only holds the Leadout entry.
1531 stat = cdrom_read_tocentry(drive, CDROM_LEADOUT, 1, 0,
1533 sizeof(struct atapi_toc_header) +
1535 sizeof(struct atapi_toc_entry),
1540 if (drive->atapi_flags & IDE_AFLAG_TOCTRACKS_AS_BCD) {
1541 toc->hdr.first_track = (u8)bin2bcd(CDROM_LEADOUT);
1542 toc->hdr.last_track = (u8)bin2bcd(CDROM_LEADOUT);
1544 toc->hdr.first_track = CDROM_LEADOUT;
1545 toc->hdr.last_track = CDROM_LEADOUT;
1552 toc->hdr.toc_length = be16_to_cpu(toc->hdr.toc_length);
1554 if (drive->atapi_flags & IDE_AFLAG_TOCTRACKS_AS_BCD) {
1555 toc->hdr.first_track = bcd2bin(toc->hdr.first_track);
1556 toc->hdr.last_track = bcd2bin(toc->hdr.last_track);
1559 for (i = 0; i <= ntracks; i++) {
1560 if (drive->atapi_flags & IDE_AFLAG_TOCADDR_AS_BCD) {
1561 if (drive->atapi_flags & IDE_AFLAG_TOCTRACKS_AS_BCD)
1562 toc->ent[i].track = bcd2bin(toc->ent[i].track);
1563 msf_from_bcd(&toc->ent[i].addr.msf);
1565 toc->ent[i].addr.lba = msf_to_lba(toc->ent[i].addr.msf.minute,
1566 toc->ent[i].addr.msf.second,
1567 toc->ent[i].addr.msf.frame);
1570 if (toc->hdr.first_track != CDROM_LEADOUT) {
1571 /* read the multisession information */
1572 stat = cdrom_read_tocentry(drive, 0, 0, 1, (char *)&ms_tmp,
1573 sizeof(ms_tmp), sense);
1577 toc->last_session_lba = be32_to_cpu(ms_tmp.ent.addr.lba);
1579 ms_tmp.hdr.last_track = CDROM_LEADOUT;
1580 ms_tmp.hdr.first_track = ms_tmp.hdr.last_track;
1581 toc->last_session_lba = msf_to_lba(0, 2, 0); /* 0m 2s 0f */
1584 if (drive->atapi_flags & IDE_AFLAG_TOCADDR_AS_BCD) {
1585 /* re-read multisession information using MSF format */
1586 stat = cdrom_read_tocentry(drive, 0, 1, 1, (char *)&ms_tmp,
1587 sizeof(ms_tmp), sense);
1591 msf_from_bcd(&ms_tmp.ent.addr.msf);
1592 toc->last_session_lba = msf_to_lba(ms_tmp.ent.addr.msf.minute,
1593 ms_tmp.ent.addr.msf.second,
1594 ms_tmp.ent.addr.msf.frame);
1597 toc->xa_flag = (ms_tmp.hdr.first_track != ms_tmp.hdr.last_track);
1599 /* now try to get the total cdrom capacity */
1600 stat = cdrom_get_last_written(cdi, &last_written);
1601 if (!stat && (last_written > toc->capacity)) {
1602 toc->capacity = last_written;
1603 set_capacity(info->disk, toc->capacity * sectors_per_frame);
1604 drive->probed_capacity = toc->capacity * sectors_per_frame;
1607 /* Remember that we've read this stuff. */
1608 drive->atapi_flags |= IDE_AFLAG_TOC_VALID;
1613 int ide_cdrom_get_capabilities(ide_drive_t *drive, u8 *buf)
1615 struct cdrom_info *info = drive->driver_data;
1616 struct cdrom_device_info *cdi = &info->devinfo;
1617 struct packet_command cgc;
1618 int stat, attempts = 3, size = ATAPI_CAPABILITIES_PAGE_SIZE;
1620 ide_debug_log(IDE_DBG_FUNC, "Call %s\n", __func__);
1622 if ((drive->atapi_flags & IDE_AFLAG_FULL_CAPS_PAGE) == 0)
1623 size -= ATAPI_CAPABILITIES_PAGE_PAD_SIZE;
1625 init_cdrom_command(&cgc, buf, size, CGC_DATA_UNKNOWN);
1627 /* we seem to get stat=0x01,err=0x00 the first time (??) */
1628 stat = cdrom_mode_sense(cdi, &cgc, GPMODE_CAPABILITIES_PAGE, 0);
1631 } while (--attempts);
1635 void ide_cdrom_update_speed(ide_drive_t *drive, u8 *buf)
1637 struct cdrom_info *cd = drive->driver_data;
1638 u16 curspeed, maxspeed;
1640 ide_debug_log(IDE_DBG_FUNC, "Call %s\n", __func__);
1642 if (drive->atapi_flags & IDE_AFLAG_LE_SPEED_FIELDS) {
1643 curspeed = le16_to_cpup((__le16 *)&buf[8 + 14]);
1644 maxspeed = le16_to_cpup((__le16 *)&buf[8 + 8]);
1646 curspeed = be16_to_cpup((__be16 *)&buf[8 + 14]);
1647 maxspeed = be16_to_cpup((__be16 *)&buf[8 + 8]);
1650 cd->current_speed = (curspeed + (176/2)) / 176;
1651 cd->max_speed = (maxspeed + (176/2)) / 176;
1654 #define IDE_CD_CAPABILITIES \
1655 (CDC_CLOSE_TRAY | CDC_OPEN_TRAY | CDC_LOCK | CDC_SELECT_SPEED | \
1656 CDC_SELECT_DISC | CDC_MULTI_SESSION | CDC_MCN | CDC_MEDIA_CHANGED | \
1657 CDC_PLAY_AUDIO | CDC_RESET | CDC_DRIVE_STATUS | CDC_CD_R | \
1658 CDC_CD_RW | CDC_DVD | CDC_DVD_R | CDC_DVD_RAM | CDC_GENERIC_PACKET | \
1659 CDC_MO_DRIVE | CDC_MRW | CDC_MRW_W | CDC_RAM)
1661 static struct cdrom_device_ops ide_cdrom_dops = {
1662 .open = ide_cdrom_open_real,
1663 .release = ide_cdrom_release_real,
1664 .drive_status = ide_cdrom_drive_status,
1665 .media_changed = ide_cdrom_check_media_change_real,
1666 .tray_move = ide_cdrom_tray_move,
1667 .lock_door = ide_cdrom_lock_door,
1668 .select_speed = ide_cdrom_select_speed,
1669 .get_last_session = ide_cdrom_get_last_session,
1670 .get_mcn = ide_cdrom_get_mcn,
1671 .reset = ide_cdrom_reset,
1672 .audio_ioctl = ide_cdrom_audio_ioctl,
1673 .capability = IDE_CD_CAPABILITIES,
1674 .generic_packet = ide_cdrom_packet,
1677 static int ide_cdrom_register(ide_drive_t *drive, int nslots)
1679 struct cdrom_info *info = drive->driver_data;
1680 struct cdrom_device_info *devinfo = &info->devinfo;
1682 ide_debug_log(IDE_DBG_PROBE, "Call %s, nslots: %d\n", __func__, nslots);
1684 devinfo->ops = &ide_cdrom_dops;
1685 devinfo->speed = info->current_speed;
1686 devinfo->capacity = nslots;
1687 devinfo->handle = drive;
1688 strcpy(devinfo->name, drive->name);
1690 if (drive->atapi_flags & IDE_AFLAG_NO_SPEED_SELECT)
1691 devinfo->mask |= CDC_SELECT_SPEED;
1693 devinfo->disk = info->disk;
1694 return register_cdrom(devinfo);
1697 static int ide_cdrom_probe_capabilities(ide_drive_t *drive)
1699 struct cdrom_info *cd = drive->driver_data;
1700 struct cdrom_device_info *cdi = &cd->devinfo;
1701 u8 buf[ATAPI_CAPABILITIES_PAGE_SIZE];
1702 mechtype_t mechtype;
1705 ide_debug_log(IDE_DBG_PROBE, "Call %s, drive->media: 0x%x, "
1706 "drive->atapi_flags: 0x%lx\n", __func__, drive->media,
1707 drive->atapi_flags);
1709 cdi->mask = (CDC_CD_R | CDC_CD_RW | CDC_DVD | CDC_DVD_R |
1710 CDC_DVD_RAM | CDC_SELECT_DISC | CDC_PLAY_AUDIO |
1711 CDC_MO_DRIVE | CDC_RAM);
1713 if (drive->media == ide_optical) {
1714 cdi->mask &= ~(CDC_MO_DRIVE | CDC_RAM);
1715 printk(KERN_ERR PFX "%s: ATAPI magneto-optical drive\n",
1720 if (drive->atapi_flags & IDE_AFLAG_PRE_ATAPI12) {
1721 drive->atapi_flags &= ~IDE_AFLAG_NO_EJECT;
1722 cdi->mask &= ~CDC_PLAY_AUDIO;
1727 * We have to cheat a little here. the packet will eventually be queued
1728 * with ide_cdrom_packet(), which extracts the drive from cdi->handle.
1729 * Since this device hasn't been registered with the Uniform layer yet,
1730 * it can't do this. Same goes for cdi->ops.
1732 cdi->handle = drive;
1733 cdi->ops = &ide_cdrom_dops;
1735 if (ide_cdrom_get_capabilities(drive, buf))
1738 if ((buf[8 + 6] & 0x01) == 0)
1739 drive->atapi_flags |= IDE_AFLAG_NO_DOORLOCK;
1740 if (buf[8 + 6] & 0x08)
1741 drive->atapi_flags &= ~IDE_AFLAG_NO_EJECT;
1742 if (buf[8 + 3] & 0x01)
1743 cdi->mask &= ~CDC_CD_R;
1744 if (buf[8 + 3] & 0x02)
1745 cdi->mask &= ~(CDC_CD_RW | CDC_RAM);
1746 if (buf[8 + 2] & 0x38)
1747 cdi->mask &= ~CDC_DVD;
1748 if (buf[8 + 3] & 0x20)
1749 cdi->mask &= ~(CDC_DVD_RAM | CDC_RAM);
1750 if (buf[8 + 3] & 0x10)
1751 cdi->mask &= ~CDC_DVD_R;
1752 if ((buf[8 + 4] & 0x01) || (drive->atapi_flags & IDE_AFLAG_PLAY_AUDIO_OK))
1753 cdi->mask &= ~CDC_PLAY_AUDIO;
1755 mechtype = buf[8 + 6] >> 5;
1756 if (mechtype == mechtype_caddy ||
1757 mechtype == mechtype_popup ||
1758 (drive->atapi_flags & IDE_AFLAG_NO_AUTOCLOSE))
1759 cdi->mask |= CDC_CLOSE_TRAY;
1761 if (cdi->sanyo_slot > 0) {
1762 cdi->mask &= ~CDC_SELECT_DISC;
1764 } else if (mechtype == mechtype_individual_changer ||
1765 mechtype == mechtype_cartridge_changer) {
1766 nslots = cdrom_number_of_slots(cdi);
1768 cdi->mask &= ~CDC_SELECT_DISC;
1771 ide_cdrom_update_speed(drive, buf);
1773 printk(KERN_INFO PFX "%s: ATAPI", drive->name);
1775 /* don't print speed if the drive reported 0 */
1777 printk(KERN_CONT " %dX", cd->max_speed);
1779 printk(KERN_CONT " %s", (cdi->mask & CDC_DVD) ? "CD-ROM" : "DVD-ROM");
1781 if ((cdi->mask & CDC_DVD_R) == 0 || (cdi->mask & CDC_DVD_RAM) == 0)
1782 printk(KERN_CONT " DVD%s%s",
1783 (cdi->mask & CDC_DVD_R) ? "" : "-R",
1784 (cdi->mask & CDC_DVD_RAM) ? "" : "-RAM");
1786 if ((cdi->mask & CDC_CD_R) == 0 || (cdi->mask & CDC_CD_RW) == 0)
1787 printk(KERN_CONT " CD%s%s",
1788 (cdi->mask & CDC_CD_R) ? "" : "-R",
1789 (cdi->mask & CDC_CD_RW) ? "" : "/RW");
1791 if ((cdi->mask & CDC_SELECT_DISC) == 0)
1792 printk(KERN_CONT " changer w/%d slots", nslots);
1794 printk(KERN_CONT " drive");
1796 printk(KERN_CONT ", %dkB Cache\n",
1797 be16_to_cpup((__be16 *)&buf[8 + 12]));
1802 /* standard prep_rq_fn that builds 10 byte cmds */
1803 static int ide_cdrom_prep_fs(struct request_queue *q, struct request *rq)
1805 int hard_sect = queue_hardsect_size(q);
1806 long block = (long)rq->hard_sector / (hard_sect >> 9);
1807 unsigned long blocks = rq->hard_nr_sectors / (hard_sect >> 9);
1809 memset(rq->cmd, 0, BLK_MAX_CDB);
1811 if (rq_data_dir(rq) == READ)
1812 rq->cmd[0] = GPCMD_READ_10;
1814 rq->cmd[0] = GPCMD_WRITE_10;
1819 rq->cmd[2] = (block >> 24) & 0xff;
1820 rq->cmd[3] = (block >> 16) & 0xff;
1821 rq->cmd[4] = (block >> 8) & 0xff;
1822 rq->cmd[5] = block & 0xff;
1825 * and transfer length
1827 rq->cmd[7] = (blocks >> 8) & 0xff;
1828 rq->cmd[8] = blocks & 0xff;
1834 * Most of the SCSI commands are supported directly by ATAPI devices.
1835 * This transform handles the few exceptions.
1837 static int ide_cdrom_prep_pc(struct request *rq)
1841 /* transform 6-byte read/write commands to the 10-byte version */
1842 if (c[0] == READ_6 || c[0] == WRITE_6) {
1849 c[0] += (READ_10 - READ_6);
1855 * it's silly to pretend we understand 6-byte sense commands, just
1856 * reject with ILLEGAL_REQUEST and the caller should take the
1857 * appropriate action
1859 if (c[0] == MODE_SENSE || c[0] == MODE_SELECT) {
1860 rq->errors = ILLEGAL_REQUEST;
1861 return BLKPREP_KILL;
1867 static int ide_cdrom_prep_fn(struct request_queue *q, struct request *rq)
1869 if (blk_fs_request(rq))
1870 return ide_cdrom_prep_fs(q, rq);
1871 else if (blk_pc_request(rq))
1872 return ide_cdrom_prep_pc(rq);
1877 struct cd_list_entry {
1878 const char *id_model;
1879 const char *id_firmware;
1880 unsigned int cd_flags;
1883 #ifdef CONFIG_IDE_PROC_FS
1884 static sector_t ide_cdrom_capacity(ide_drive_t *drive)
1886 unsigned long capacity, sectors_per_frame;
1888 if (cdrom_read_capacity(drive, &capacity, §ors_per_frame, NULL))
1891 return capacity * sectors_per_frame;
1894 static int proc_idecd_read_capacity(char *page, char **start, off_t off,
1895 int count, int *eof, void *data)
1897 ide_drive_t *drive = data;
1900 len = sprintf(page, "%llu\n", (long long)ide_cdrom_capacity(drive));
1901 PROC_IDE_READ_RETURN(page, start, off, count, eof, len);
1904 static ide_proc_entry_t idecd_proc[] = {
1905 { "capacity", S_IFREG|S_IRUGO, proc_idecd_read_capacity, NULL },
1906 { NULL, 0, NULL, NULL }
1909 ide_devset_rw_flag(dsc_overlap, IDE_DFLAG_DSC_OVERLAP);
1911 static const struct ide_proc_devset idecd_settings[] = {
1912 IDE_PROC_DEVSET(dsc_overlap, 0, 1),
1917 static const struct cd_list_entry ide_cd_quirks_list[] = {
1918 /* Limit transfer size per interrupt. */
1919 { "SAMSUNG CD-ROM SCR-2430", NULL, IDE_AFLAG_LIMIT_NFRAMES },
1920 { "SAMSUNG CD-ROM SCR-2432", NULL, IDE_AFLAG_LIMIT_NFRAMES },
1921 /* SCR-3231 doesn't support the SET_CD_SPEED command. */
1922 { "SAMSUNG CD-ROM SCR-3231", NULL, IDE_AFLAG_NO_SPEED_SELECT },
1923 /* Old NEC260 (not R) was released before ATAPI 1.2 spec. */
1924 { "NEC CD-ROM DRIVE:260", "1.01", IDE_AFLAG_TOCADDR_AS_BCD |
1925 IDE_AFLAG_PRE_ATAPI12, },
1926 /* Vertos 300, some versions of this drive like to talk BCD. */
1927 { "V003S0DS", NULL, IDE_AFLAG_VERTOS_300_SSD, },
1928 /* Vertos 600 ESD. */
1929 { "V006E0DS", NULL, IDE_AFLAG_VERTOS_600_ESD, },
1931 * Sanyo 3 CD changer uses a non-standard command for CD changing
1932 * (by default standard ATAPI support for CD changers is used).
1934 { "CD-ROM CDR-C3 G", NULL, IDE_AFLAG_SANYO_3CD },
1935 { "CD-ROM CDR-C3G", NULL, IDE_AFLAG_SANYO_3CD },
1936 { "CD-ROM CDR_C36", NULL, IDE_AFLAG_SANYO_3CD },
1937 /* Stingray 8X CD-ROM. */
1938 { "STINGRAY 8422 IDE 8X CD-ROM 7-27-95", NULL, IDE_AFLAG_PRE_ATAPI12 },
1940 * ACER 50X CD-ROM and WPI 32X CD-ROM require the full spec length
1941 * mode sense page capabilities size, but older drives break.
1943 { "ATAPI CD ROM DRIVE 50X MAX", NULL, IDE_AFLAG_FULL_CAPS_PAGE },
1944 { "WPI CDS-32X", NULL, IDE_AFLAG_FULL_CAPS_PAGE },
1945 /* ACER/AOpen 24X CD-ROM has the speed fields byte-swapped. */
1946 { "", "241N", IDE_AFLAG_LE_SPEED_FIELDS },
1948 * Some drives used by Apple don't advertise audio play
1949 * but they do support reading TOC & audio datas.
1951 { "MATSHITADVD-ROM SR-8187", NULL, IDE_AFLAG_PLAY_AUDIO_OK },
1952 { "MATSHITADVD-ROM SR-8186", NULL, IDE_AFLAG_PLAY_AUDIO_OK },
1953 { "MATSHITADVD-ROM SR-8176", NULL, IDE_AFLAG_PLAY_AUDIO_OK },
1954 { "MATSHITADVD-ROM SR-8174", NULL, IDE_AFLAG_PLAY_AUDIO_OK },
1955 { "Optiarc DVD RW AD-5200A", NULL, IDE_AFLAG_PLAY_AUDIO_OK },
1956 { "Optiarc DVD RW AD-7200A", NULL, IDE_AFLAG_PLAY_AUDIO_OK },
1957 { "Optiarc DVD RW AD-7543A", NULL, IDE_AFLAG_NO_AUTOCLOSE },
1961 static unsigned int ide_cd_flags(u16 *id)
1963 const struct cd_list_entry *cle = ide_cd_quirks_list;
1965 while (cle->id_model) {
1966 if (strcmp(cle->id_model, (char *)&id[ATA_ID_PROD]) == 0 &&
1967 (cle->id_firmware == NULL ||
1968 strstr((char *)&id[ATA_ID_FW_REV], cle->id_firmware)))
1969 return cle->cd_flags;
1976 static int ide_cdrom_setup(ide_drive_t *drive)
1978 struct cdrom_info *cd = drive->driver_data;
1979 struct cdrom_device_info *cdi = &cd->devinfo;
1980 u16 *id = drive->id;
1981 char *fw_rev = (char *)&id[ATA_ID_FW_REV];
1984 ide_debug_log(IDE_DBG_PROBE, "Call %s\n", __func__);
1986 blk_queue_prep_rq(drive->queue, ide_cdrom_prep_fn);
1987 blk_queue_dma_alignment(drive->queue, 31);
1988 blk_queue_update_dma_pad(drive->queue, 15);
1989 drive->queue->unplug_delay = (1 * HZ) / 1000;
1990 if (!drive->queue->unplug_delay)
1991 drive->queue->unplug_delay = 1;
1993 drive->atapi_flags = IDE_AFLAG_MEDIA_CHANGED | IDE_AFLAG_NO_EJECT |
1996 if ((drive->atapi_flags & IDE_AFLAG_VERTOS_300_SSD) &&
1997 fw_rev[4] == '1' && fw_rev[6] <= '2')
1998 drive->atapi_flags |= (IDE_AFLAG_TOCTRACKS_AS_BCD |
1999 IDE_AFLAG_TOCADDR_AS_BCD);
2000 else if ((drive->atapi_flags & IDE_AFLAG_VERTOS_600_ESD) &&
2001 fw_rev[4] == '1' && fw_rev[6] <= '2')
2002 drive->atapi_flags |= IDE_AFLAG_TOCTRACKS_AS_BCD;
2003 else if (drive->atapi_flags & IDE_AFLAG_SANYO_3CD)
2004 /* 3 => use CD in slot 0 */
2005 cdi->sanyo_slot = 3;
2007 nslots = ide_cdrom_probe_capabilities(drive);
2009 /* set correct block size */
2010 blk_queue_hardsect_size(drive->queue, CD_FRAMESIZE);
2012 if (drive->next != drive)
2013 drive->dev_flags |= IDE_DFLAG_DSC_OVERLAP;
2015 drive->dev_flags &= ~IDE_DFLAG_DSC_OVERLAP;
2017 if (ide_cdrom_register(drive, nslots)) {
2018 printk(KERN_ERR PFX "%s: %s failed to register device with the"
2019 " cdrom driver.\n", drive->name, __func__);
2020 cd->devinfo.handle = NULL;
2024 ide_proc_register_driver(drive, cd->driver);
2028 static void ide_cd_remove(ide_drive_t *drive)
2030 struct cdrom_info *info = drive->driver_data;
2032 ide_debug_log(IDE_DBG_FUNC, "Call %s\n", __func__);
2034 ide_proc_unregister_driver(drive, info->driver);
2036 del_gendisk(info->disk);
2041 static void ide_cd_release(struct kref *kref)
2043 struct cdrom_info *info = to_ide_drv(kref, cdrom_info);
2044 struct cdrom_device_info *devinfo = &info->devinfo;
2045 ide_drive_t *drive = info->drive;
2046 struct gendisk *g = info->disk;
2048 ide_debug_log(IDE_DBG_FUNC, "Call %s\n", __func__);
2051 if (devinfo->handle == drive)
2052 unregister_cdrom(devinfo);
2053 drive->dev_flags &= ~IDE_DFLAG_DSC_OVERLAP;
2054 drive->driver_data = NULL;
2055 blk_queue_prep_rq(drive->queue, NULL);
2056 g->private_data = NULL;
2061 static int ide_cd_probe(ide_drive_t *);
2063 static ide_driver_t ide_cdrom_driver = {
2065 .owner = THIS_MODULE,
2066 .name = "ide-cdrom",
2067 .bus = &ide_bus_type,
2069 .probe = ide_cd_probe,
2070 .remove = ide_cd_remove,
2071 .version = IDECD_VERSION,
2072 .do_request = ide_cd_do_request,
2073 .end_request = ide_end_request,
2074 .error = __ide_error,
2075 #ifdef CONFIG_IDE_PROC_FS
2077 .settings = idecd_settings,
2081 static int idecd_open(struct inode *inode, struct file *file)
2083 struct gendisk *disk = inode->i_bdev->bd_disk;
2084 struct cdrom_info *info;
2087 info = ide_cd_get(disk);
2091 rc = cdrom_open(&info->devinfo, inode, file);
2099 static int idecd_release(struct inode *inode, struct file *file)
2101 struct gendisk *disk = inode->i_bdev->bd_disk;
2102 struct cdrom_info *info = ide_drv_g(disk, cdrom_info);
2104 cdrom_release(&info->devinfo, file);
2111 static int idecd_set_spindown(struct cdrom_device_info *cdi, unsigned long arg)
2113 struct packet_command cgc;
2118 if (copy_from_user(&spindown, (void __user *)arg, sizeof(char)))
2121 init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_UNKNOWN);
2123 stat = cdrom_mode_sense(cdi, &cgc, GPMODE_CDROM_PAGE, 0);
2127 buffer[11] = (buffer[11] & 0xf0) | (spindown & 0x0f);
2128 return cdrom_mode_select(cdi, &cgc);
2131 static int idecd_get_spindown(struct cdrom_device_info *cdi, unsigned long arg)
2133 struct packet_command cgc;
2138 init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_UNKNOWN);
2140 stat = cdrom_mode_sense(cdi, &cgc, GPMODE_CDROM_PAGE, 0);
2144 spindown = buffer[11] & 0x0f;
2145 if (copy_to_user((void __user *)arg, &spindown, sizeof(char)))
2150 static int idecd_ioctl(struct inode *inode, struct file *file,
2151 unsigned int cmd, unsigned long arg)
2153 struct block_device *bdev = inode->i_bdev;
2154 struct cdrom_info *info = ide_drv_g(bdev->bd_disk, cdrom_info);
2158 case CDROMSETSPINDOWN:
2159 return idecd_set_spindown(&info->devinfo, arg);
2160 case CDROMGETSPINDOWN:
2161 return idecd_get_spindown(&info->devinfo, arg);
2166 err = generic_ide_ioctl(info->drive, file, bdev, cmd, arg);
2168 err = cdrom_ioctl(file, &info->devinfo, inode, cmd, arg);
2173 static int idecd_media_changed(struct gendisk *disk)
2175 struct cdrom_info *info = ide_drv_g(disk, cdrom_info);
2176 return cdrom_media_changed(&info->devinfo);
2179 static int idecd_revalidate_disk(struct gendisk *disk)
2181 struct cdrom_info *info = ide_drv_g(disk, cdrom_info);
2182 struct request_sense sense;
2184 ide_cd_read_toc(info->drive, &sense);
2189 static struct block_device_operations idecd_ops = {
2190 .owner = THIS_MODULE,
2192 .release = idecd_release,
2193 .ioctl = idecd_ioctl,
2194 .media_changed = idecd_media_changed,
2195 .revalidate_disk = idecd_revalidate_disk
2198 /* module options */
2199 static char *ignore;
2201 module_param(ignore, charp, 0400);
2202 MODULE_DESCRIPTION("ATAPI CD-ROM Driver");
2204 static int ide_cd_probe(ide_drive_t *drive)
2206 struct cdrom_info *info;
2208 struct request_sense sense;
2210 ide_debug_log(IDE_DBG_PROBE, "Call %s, drive->driver_req: %s, "
2211 "drive->media: 0x%x\n", __func__, drive->driver_req,
2214 if (!strstr("ide-cdrom", drive->driver_req))
2217 if (drive->media != ide_cdrom && drive->media != ide_optical)
2220 /* skip drives that we were told to ignore */
2221 if (ignore != NULL) {
2222 if (strstr(ignore, drive->name)) {
2223 printk(KERN_INFO PFX "ignoring drive %s\n",
2228 info = kzalloc(sizeof(struct cdrom_info), GFP_KERNEL);
2230 printk(KERN_ERR PFX "%s: Can't allocate a cdrom structure\n",
2235 g = alloc_disk(1 << PARTN_BITS);
2239 ide_init_disk(g, drive);
2241 kref_init(&info->kref);
2243 info->drive = drive;
2244 info->driver = &ide_cdrom_driver;
2247 g->private_data = &info->driver;
2249 drive->driver_data = info;
2252 g->driverfs_dev = &drive->gendev;
2253 g->flags = GENHD_FL_CD | GENHD_FL_REMOVABLE;
2254 if (ide_cdrom_setup(drive)) {
2255 ide_cd_release(&info->kref);
2259 ide_cd_read_toc(drive, &sense);
2260 g->fops = &idecd_ops;
2261 g->flags |= GENHD_FL_REMOVABLE;
2271 static void __exit ide_cdrom_exit(void)
2273 driver_unregister(&ide_cdrom_driver.gen_driver);
2276 static int __init ide_cdrom_init(void)
2278 printk(KERN_INFO DRV_NAME " driver " IDECD_VERSION "\n");
2279 return driver_register(&ide_cdrom_driver.gen_driver);
2282 MODULE_ALIAS("ide:*m-cdrom*");
2283 MODULE_ALIAS("ide-cd");
2284 module_init(ide_cdrom_init);
2285 module_exit(ide_cdrom_exit);
2286 MODULE_LICENSE("GPL");