From a3bbb9d882dc94fe3a1361596ab9ce55d84059ea Mon Sep 17 00:00:00 2001 From: Bartlomiej Zolnierkiewicz Date: Fri, 25 Jan 2008 22:17:10 +0100 Subject: 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 --- drivers/ide/ide-taskfile.c | 9 +++++++++ 1 file changed, 9 insertions(+) (limited to 'drivers/ide/ide-taskfile.c') diff --git a/drivers/ide/ide-taskfile.c b/drivers/ide/ide-taskfile.c index 8a5a10fdcfc..7ae4a42cfa5 100644 --- a/drivers/ide/ide-taskfile.c +++ b/drivers/ide/ide-taskfile.c @@ -126,6 +126,7 @@ int taskfile_lib_get_identify (ide_drive_t *drive, u8 *buf) args.tf.command = WIN_IDENTIFY; else args.tf.command = WIN_PIDENTIFY; + 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; @@ -619,6 +620,10 @@ int ide_taskfile_ioctl (ide_drive_t *drive, unsigned int cmd, unsigned long arg) args.data_phase = req_task->data_phase; args.command_type = req_task->req_cmd; + args.tf_flags = IDE_TFLAG_OUT_DEVICE; + if (drive->addressing == 1) + args.tf_flags |= IDE_TFLAG_LBA48; + if (req_task->out_flags.all) { args.tf_flags |= IDE_TFLAG_FLAGGED; @@ -644,6 +649,10 @@ int ide_taskfile_ioctl (ide_drive_t *drive, unsigned int cmd, unsigned long arg) args.tf_flags |= IDE_TFLAG_OUT_LBAM; if (req_task->out_flags.b.hcyl) args.tf_flags |= IDE_TFLAG_OUT_LBAH; + } else { + args.tf_flags |= IDE_TFLAG_OUT_TF; + if (args.tf_flags & IDE_TFLAG_LBA48) + args.tf_flags |= IDE_TFLAG_OUT_HOB; } drive->io_32bit = 0; -- cgit v1.2.3