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path: root/drivers/ide/ide-park.c
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Diffstat (limited to 'drivers/ide/ide-park.c')
-rw-r--r--drivers/ide/ide-park.c25
1 files changed, 25 insertions, 0 deletions
diff --git a/drivers/ide/ide-park.c b/drivers/ide/ide-park.c
index c875a957596..f30e52152fc 100644
--- a/drivers/ide/ide-park.c
+++ b/drivers/ide/ide-park.c
@@ -1,5 +1,6 @@
#include <linux/kernel.h>
#include <linux/ide.h>
+#include <linux/hdreg.h>
#include <linux/jiffies.h>
#include <linux/blkdev.h>
@@ -60,6 +61,30 @@ out:
return;
}
+ide_startstop_t ide_do_park_unpark(ide_drive_t *drive, struct request *rq)
+{
+ ide_task_t task;
+ struct ide_taskfile *tf = &task.tf;
+
+ memset(&task, 0, sizeof(task));
+ if (rq->cmd[0] == REQ_PARK_HEADS) {
+ drive->sleep = *(unsigned long *)rq->special;
+ drive->dev_flags |= IDE_DFLAG_SLEEPING;
+ tf->command = ATA_CMD_IDLEIMMEDIATE;
+ tf->feature = 0x44;
+ tf->lbal = 0x4c;
+ tf->lbam = 0x4e;
+ tf->lbah = 0x55;
+ task.tf_flags |= IDE_TFLAG_CUSTOM_HANDLER;
+ } else /* cmd == REQ_UNPARK_HEADS */
+ tf->command = ATA_CMD_CHK_POWER;
+
+ task.tf_flags |= IDE_TFLAG_TF | IDE_TFLAG_DEVICE;
+ task.rq = rq;
+ drive->hwif->data_phase = task.data_phase = TASKFILE_NO_DATA;
+ return do_rw_taskfile(drive, &task);
+}
+
ssize_t ide_park_show(struct device *dev, struct device_attribute *attr,
char *buf)
{