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path: root/drivers/ide/ide-atapi.c
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Diffstat (limited to 'drivers/ide/ide-atapi.c')
-rw-r--r--drivers/ide/ide-atapi.c41
1 files changed, 38 insertions, 3 deletions
diff --git a/drivers/ide/ide-atapi.c b/drivers/ide/ide-atapi.c
index 8c5cf68fbd7..c110329ccb1 100644
--- a/drivers/ide/ide-atapi.c
+++ b/drivers/ide/ide-atapi.c
@@ -3,6 +3,7 @@
*/
#include <linux/kernel.h>
+#include <linux/cdrom.h>
#include <linux/delay.h>
#include <linux/ide.h>
#include <scsi/scsi.h>
@@ -252,6 +253,38 @@ int ide_scsi_expiry(ide_drive_t *drive)
}
EXPORT_SYMBOL_GPL(ide_scsi_expiry);
+int ide_cd_expiry(ide_drive_t *drive)
+{
+ struct request *rq = HWGROUP(drive)->rq;
+ unsigned long wait = 0;
+
+ debug_log("%s: rq->cmd[0]: 0x%x\n", __func__, rq->cmd[0]);
+
+ /*
+ * Some commands are *slow* and normally take a long time to complete.
+ * Usually we can use the ATAPI "disconnect" to bypass this, but not all
+ * commands/drives support that. Let ide_timer_expiry keep polling us
+ * for these.
+ */
+ switch (rq->cmd[0]) {
+ case GPCMD_BLANK:
+ case GPCMD_FORMAT_UNIT:
+ case GPCMD_RESERVE_RZONE_TRACK:
+ case GPCMD_CLOSE_TRACK:
+ case GPCMD_FLUSH_CACHE:
+ wait = ATAPI_WAIT_PC;
+ break;
+ default:
+ if (!(rq->cmd_flags & REQ_QUIET))
+ printk(KERN_INFO "cmd 0x%x timed out\n",
+ rq->cmd[0]);
+ wait = 0;
+ break;
+ }
+ return wait;
+}
+EXPORT_SYMBOL_GPL(ide_cd_expiry);
+
int ide_cd_get_xferlen(struct request *rq)
{
if (blk_fs_request(rq))
@@ -562,11 +595,11 @@ static ide_startstop_t ide_transfer_pc(ide_drive_t *drive)
return ide_started;
}
-ide_startstop_t ide_issue_pc(ide_drive_t *drive, unsigned int timeout,
- ide_expiry_t *expiry)
+ide_startstop_t ide_issue_pc(ide_drive_t *drive, unsigned int timeout)
{
struct ide_atapi_pc *pc = drive->pc;
ide_hwif_t *hwif = drive->hwif;
+ ide_expiry_t *expiry = NULL;
u32 tf_flags;
u16 bcount;
u8 scsi = !!(drive->dev_flags & IDE_DFLAG_SCSI);
@@ -578,9 +611,11 @@ ide_startstop_t ide_issue_pc(ide_drive_t *drive, unsigned int timeout,
if (dev_is_idecd(drive)) {
tf_flags = IDE_TFLAG_OUT_NSECT | IDE_TFLAG_OUT_LBAL;
bcount = ide_cd_get_xferlen(hwif->hwgroup->rq);
+ expiry = ide_cd_expiry;
} else if (scsi) {
tf_flags = 0;
bcount = min(pc->req_xfer, 63 * 1024);
+ expiry = ide_scsi_expiry;
} else {
tf_flags = IDE_TFLAG_OUT_DEVICE;
bcount = ((drive->media == ide_tape) ?
@@ -613,7 +648,7 @@ ide_startstop_t ide_issue_pc(ide_drive_t *drive, unsigned int timeout,
if (drive->dma)
drive->waiting_for_dma = 0;
ide_execute_command(drive, ATA_CMD_PACKET, ide_transfer_pc,
- timeout, NULL);
+ timeout, expiry);
return ide_started;
} else {
ide_execute_pkt_cmd(drive);