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authorBartlomiej Zolnierkiewicz <bzolnier@gmail.com>2008-01-25 22:17:10 +0100
committerBartlomiej Zolnierkiewicz <bzolnier@gmail.com>2008-01-25 22:17:10 +0100
commita3bbb9d882dc94fe3a1361596ab9ce55d84059ea (patch)
treeb2b7af290b6300be00a2cbd6c5d0dba19905dc65 /drivers/ide/ide-disk.c
parent868e672ac8db650dde695a5707a6caf5a757e7d9 (diff)
ide: remove unnecessary writes to HOB taskfile registers
* Set taskfile flags for REQ_TYPE_ATA_TASKFILE requests before adding the request to the queue. * Cleanup execute_drive_cmd(). * Remove unnecessary writes to HOB taskfile registers when using LBA48 disk for the following cases: - Power Management requests (WIN_FLUSH_CACHE[_EXT], WIN_STANDBYNOW1, WIN_IDLEIMMEDIATE commands) - special commands (WIN_SPECIFY, WIN_RESTORE, WIN_SETMULT) - Host Protected Area support (WIN_READ_NATIVE_MAX, WIN_SET_MAX) - /proc/ide/ SMART support (WIN_SMART with SMART_ENABLE, SMART_READ_VALUES and SMART_READ_THRESHOLDS subcommands) - write cache enabling/disabling in ide-disk (WIN_SETFEATURES with SETFEATURES_{EN,DIS}_WCACHE) - write cache flushing in ide-disk (WIN_FLUSH_CACHE[_EXT]) - acoustic management in ide-disk (WIN_SETFEATURES with SETFEATURES_{EN,DIS}_AAM) - door (un)locking in ide-disk (WIN_DOORLOCK, WIN_DOORUNLOCK) - /proc/ide/hd?/identify support (WIN_IDENTIFY) - ACPI _GTF taskfiles Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Diffstat (limited to 'drivers/ide/ide-disk.c')
-rw-r--r--drivers/ide/ide-disk.c13
1 files changed, 13 insertions, 0 deletions
diff --git a/drivers/ide/ide-disk.c b/drivers/ide/ide-disk.c
index 3e03d0c1a47..fc785e760bd 100644
--- a/drivers/ide/ide-disk.c
+++ b/drivers/ide/ide-disk.c
@@ -304,6 +304,9 @@ static u64 idedisk_read_native_max_address(ide_drive_t *drive, int lba48)
else
tf->command = WIN_READ_NATIVE_MAX;
tf->device = ATA_LBA;
+ args.tf_flags = IDE_TFLAG_OUT_TF | IDE_TFLAG_OUT_DEVICE;
+ if (lba48)
+ args.tf_flags |= (IDE_TFLAG_LBA48 | IDE_TFLAG_OUT_HOB);
/* submit command request */
ide_no_data_taskfile(drive, &args);
@@ -349,6 +352,9 @@ static u64 idedisk_set_max_address(ide_drive_t *drive, u64 addr_req, int lba48)
tf->command = WIN_SET_MAX;
}
tf->device |= ATA_LBA;
+ args.tf_flags = IDE_TFLAG_OUT_TF | IDE_TFLAG_OUT_DEVICE;
+ if (lba48)
+ args.tf_flags |= (IDE_TFLAG_LBA48 | IDE_TFLAG_OUT_HOB);
/* submit command request */
ide_no_data_taskfile(drive, &args);
/* if OK, compute maximum address value */
@@ -497,6 +503,7 @@ static int smart_enable(ide_drive_t *drive)
tf->lbam = SMART_LCYL_PASS;
tf->lbah = SMART_HCYL_PASS;
tf->command = WIN_SMART;
+ args.tf_flags = IDE_TFLAG_OUT_TF | IDE_TFLAG_OUT_DEVICE;
return ide_no_data_taskfile(drive, &args);
}
@@ -511,6 +518,7 @@ static int get_smart_data(ide_drive_t *drive, u8 *buf, u8 sub_cmd)
tf->lbam = SMART_LCYL_PASS;
tf->lbah = SMART_HCYL_PASS;
tf->command = WIN_SMART;
+ args.tf_flags = IDE_TFLAG_OUT_TF | IDE_TFLAG_OUT_DEVICE;
args.command_type = IDE_DRIVE_TASK_IN;
args.data_phase = TASKFILE_IN;
args.handler = &task_in_intr;
@@ -690,6 +698,7 @@ static int write_cache(ide_drive_t *drive, int arg)
args.tf.feature = arg ?
SETFEATURES_EN_WCACHE : SETFEATURES_DIS_WCACHE;
args.tf.command = WIN_SETFEATURES;
+ args.tf_flags = IDE_TFLAG_OUT_TF | IDE_TFLAG_OUT_DEVICE;
err = ide_no_data_taskfile(drive, &args);
if (err == 0)
drive->wcache = arg;
@@ -709,6 +718,7 @@ static int do_idedisk_flushcache (ide_drive_t *drive)
args.tf.command = WIN_FLUSH_CACHE_EXT;
else
args.tf.command = WIN_FLUSH_CACHE;
+ args.tf_flags = IDE_TFLAG_OUT_TF | IDE_TFLAG_OUT_DEVICE;
return ide_no_data_taskfile(drive, &args);
}
@@ -723,6 +733,7 @@ static int set_acoustic (ide_drive_t *drive, int arg)
args.tf.feature = arg ? SETFEATURES_EN_AAM : SETFEATURES_DIS_AAM;
args.tf.nsect = arg;
args.tf.command = WIN_SETFEATURES;
+ args.tf_flags = IDE_TFLAG_OUT_TF | IDE_TFLAG_OUT_DEVICE;
ide_no_data_taskfile(drive, &args);
drive->acoustic = arg;
return 0;
@@ -985,6 +996,7 @@ static int idedisk_open(struct inode *inode, struct file *filp)
ide_task_t args;
memset(&args, 0, sizeof(ide_task_t));
args.tf.command = WIN_DOORLOCK;
+ args.tf_flags = IDE_TFLAG_OUT_TF | IDE_TFLAG_OUT_DEVICE;
check_disk_change(inode->i_bdev);
/*
* Ignore the return code from door_lock,
@@ -1010,6 +1022,7 @@ static int idedisk_release(struct inode *inode, struct file *filp)
ide_task_t args;
memset(&args, 0, sizeof(ide_task_t));
args.tf.command = WIN_DOORUNLOCK;
+ args.tf_flags = IDE_TFLAG_OUT_TF | IDE_TFLAG_OUT_DEVICE;
if (drive->doorlocking && ide_no_data_taskfile(drive, &args))
drive->doorlocking = 0;
}