lk/linux-kernel-test
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

ide: remove unnecessary writes to HOB taskfile registers

Browse Source 
* 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>
This commit is contained in:
Bartlomiej Zolnierkiewicz
2008-01-25 22:17:10 +01:00
parent 868e672ac8
commit a3bbb9d882
4 changed files with 23 additions and 12 deletions
Download Patch File Download Diff File Expand all files Collapse all files

12
drivers/ide/ide-io.c
View File

@@ -233,8 +233,6 @@ static ide_startstop_t ide_start_power_step(ide_drive_t *drive, struct request *
out_do_tf:
args->tf_flags = IDE_TFLAG_OUT_TF | IDE_TFLAG_OUT_DEVICE;
if (drive->addressing == 1)
args->tf_flags |= (IDE_TFLAG_LBA48 | IDE_TFLAG_OUT_HOB);
args->command_type = IDE_DRIVE_TASK_NO_DATA;
args->handler = task_no_data_intr;
return do_rw_taskfile(drive, args);
@@ -711,8 +709,6 @@ static ide_startstop_t ide_disk_special(ide_drive_t *drive)
}
args.tf_flags = IDE_TFLAG_OUT_TF | IDE_TFLAG_OUT_DEVICE;
if (drive->addressing == 1)
args.tf_flags |= (IDE_TFLAG_LBA48 | IDE_TFLAG_OUT_HOB);
do_rw_taskfile(drive, &args);
@@ -871,17 +867,9 @@ static ide_startstop_t execute_drive_cmd (ide_drive_t *drive,
break;
}
task->tf_flags |= IDE_TFLAG_OUT_DEVICE;
if (drive->addressing == 1)
task->tf_flags |= IDE_TFLAG_LBA48;
if (task->tf_flags & IDE_TFLAG_FLAGGED)
return flagged_taskfile(drive, task);
task->tf_flags |= IDE_TFLAG_OUT_TF;
if (task->tf_flags & IDE_TFLAG_LBA48)
task->tf_flags |= IDE_TFLAG_OUT_HOB;
return do_rw_taskfile(drive, task);
}