[Feature]add MT2731_MP2_MR2_SVN388 baseline version
Change-Id: Ief04314834b31e27effab435d3ca8ba33b499059
diff --git a/src/kernel/linux/v4.14/drivers/ide/ide-park.c b/src/kernel/linux/v4.14/drivers/ide/ide-park.c
new file mode 100644
index 0000000..6465bcc
--- /dev/null
+++ b/src/kernel/linux/v4.14/drivers/ide/ide-park.c
@@ -0,0 +1,153 @@
+// SPDX-License-Identifier: GPL-2.0
+#include <linux/kernel.h>
+#include <linux/gfp.h>
+#include <linux/ide.h>
+#include <linux/jiffies.h>
+#include <linux/blkdev.h>
+
+DECLARE_WAIT_QUEUE_HEAD(ide_park_wq);
+
+static void issue_park_cmd(ide_drive_t *drive, unsigned long timeout)
+{
+ ide_hwif_t *hwif = drive->hwif;
+ struct request_queue *q = drive->queue;
+ struct request *rq;
+ int rc;
+
+ timeout += jiffies;
+ spin_lock_irq(&hwif->lock);
+ if (drive->dev_flags & IDE_DFLAG_PARKED) {
+ int reset_timer = time_before(timeout, drive->sleep);
+ int start_queue = 0;
+
+ drive->sleep = timeout;
+ wake_up_all(&ide_park_wq);
+ if (reset_timer && del_timer(&hwif->timer))
+ start_queue = 1;
+ spin_unlock_irq(&hwif->lock);
+
+ if (start_queue)
+ blk_run_queue(q);
+ return;
+ }
+ spin_unlock_irq(&hwif->lock);
+
+ rq = blk_get_request(q, REQ_OP_DRV_IN, __GFP_RECLAIM);
+ scsi_req(rq)->cmd[0] = REQ_PARK_HEADS;
+ scsi_req(rq)->cmd_len = 1;
+ ide_req(rq)->type = ATA_PRIV_MISC;
+ rq->special = &timeout;
+ blk_execute_rq(q, NULL, rq, 1);
+ rc = scsi_req(rq)->result ? -EIO : 0;
+ blk_put_request(rq);
+ if (rc)
+ goto out;
+
+ /*
+ * Make sure that *some* command is sent to the drive after the
+ * timeout has expired, so power management will be reenabled.
+ */
+ rq = blk_get_request(q, REQ_OP_DRV_IN, GFP_NOWAIT);
+ if (IS_ERR(rq))
+ goto out;
+
+ scsi_req(rq)->cmd[0] = REQ_UNPARK_HEADS;
+ scsi_req(rq)->cmd_len = 1;
+ ide_req(rq)->type = ATA_PRIV_MISC;
+ elv_add_request(q, rq, ELEVATOR_INSERT_FRONT);
+
+out:
+ return;
+}
+
+ide_startstop_t ide_do_park_unpark(ide_drive_t *drive, struct request *rq)
+{
+ struct ide_cmd cmd;
+ struct ide_taskfile *tf = &cmd.tf;
+
+ memset(&cmd, 0, sizeof(cmd));
+ if (scsi_req(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;
+ cmd.valid.out.tf = IDE_VALID_OUT_TF | IDE_VALID_DEVICE;
+ cmd.valid.in.tf = IDE_VALID_IN_TF | IDE_VALID_DEVICE;
+ } else /* cmd == REQ_UNPARK_HEADS */
+ tf->command = ATA_CMD_CHK_POWER;
+
+ cmd.tf_flags |= IDE_TFLAG_CUSTOM_HANDLER;
+ cmd.protocol = ATA_PROT_NODATA;
+
+ cmd.rq = rq;
+
+ return do_rw_taskfile(drive, &cmd);
+}
+
+ssize_t ide_park_show(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ ide_drive_t *drive = to_ide_device(dev);
+ ide_hwif_t *hwif = drive->hwif;
+ unsigned long now;
+ unsigned int msecs;
+
+ if (drive->dev_flags & IDE_DFLAG_NO_UNLOAD)
+ return -EOPNOTSUPP;
+
+ spin_lock_irq(&hwif->lock);
+ now = jiffies;
+ if (drive->dev_flags & IDE_DFLAG_PARKED &&
+ time_after(drive->sleep, now))
+ msecs = jiffies_to_msecs(drive->sleep - now);
+ else
+ msecs = 0;
+ spin_unlock_irq(&hwif->lock);
+
+ return snprintf(buf, 20, "%u\n", msecs);
+}
+
+ssize_t ide_park_store(struct device *dev, struct device_attribute *attr,
+ const char *buf, size_t len)
+{
+#define MAX_PARK_TIMEOUT 30000
+ ide_drive_t *drive = to_ide_device(dev);
+ long int input;
+ int rc;
+
+ rc = kstrtol(buf, 10, &input);
+ if (rc)
+ return rc;
+ if (input < -2)
+ return -EINVAL;
+ if (input > MAX_PARK_TIMEOUT) {
+ input = MAX_PARK_TIMEOUT;
+ rc = -EOVERFLOW;
+ }
+
+ mutex_lock(&ide_setting_mtx);
+ if (input >= 0) {
+ if (drive->dev_flags & IDE_DFLAG_NO_UNLOAD)
+ rc = -EOPNOTSUPP;
+ else if (input || drive->dev_flags & IDE_DFLAG_PARKED)
+ issue_park_cmd(drive, msecs_to_jiffies(input));
+ } else {
+ if (drive->media == ide_disk)
+ switch (input) {
+ case -1:
+ drive->dev_flags &= ~IDE_DFLAG_NO_UNLOAD;
+ break;
+ case -2:
+ drive->dev_flags |= IDE_DFLAG_NO_UNLOAD;
+ break;
+ }
+ else
+ rc = -EOPNOTSUPP;
+ }
+ mutex_unlock(&ide_setting_mtx);
+
+ return rc ? rc : len;
+}