ide: add ide_pktcmd_tf_load() helper

Add ide_pktcmd_tf_load() helper and convert ATAPI device drivers to use it.

There should be no functionality changes caused by this patch.

Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

5 files changed, 24 insertions, 26 deletions

diff --git a/drivers/ide/ide-cd.c b/drivers/ide/ide-cd.c
index 855a23c..44b033e 100644
--- a/drivers/ide/ide-cd.c
+++ b/drivers/ide/ide-cd.c
@@ -922,14 +922,8 @@ static ide_startstop_t cdrom_start_packet_command(ide_drive_t *drive,
 		info->dma = !hwif->dma_setup(drive);
 
 	/* Set up the controller registers. */
-	if (IDE_CONTROL_REG)
-		HWIF(drive)->OUTB(drive->ctl, IDE_CONTROL_REG);
-	HWIF(drive)->OUTB(info->dma, IDE_FEATURE_REG);
-	HWIF(drive)->OUTB(0, IDE_IREASON_REG);
-	HWIF(drive)->OUTB(0, IDE_SECTOR_REG);
-
-	HWIF(drive)->OUTB(xferlen & 0xff, IDE_BCOUNTL_REG);
-	HWIF(drive)->OUTB(xferlen >> 8  , IDE_BCOUNTH_REG);
+	ide_pktcmd_tf_load(drive, IDE_TFLAG_OUT_NSECT | IDE_TFLAG_OUT_LBAL |
+			   IDE_TFLAG_NO_SELECT_MASK, xferlen, info->dma);
  
 	if (CDROM_CONFIG_FLAGS (drive)->drq_interrupt) {
 		/* waiting for CDB interrupt, not DMA yet. */
diff --git a/drivers/ide/ide-floppy.c b/drivers/ide/ide-floppy.c
index d4fd064..ff8232e 100644
--- a/drivers/ide/ide-floppy.c
+++ b/drivers/ide/ide-floppy.c
@@ -1067,13 +1067,8 @@ static ide_startstop_t idefloppy_issue_pc (ide_drive_t *drive, idefloppy_pc_t *p
 	if (test_bit(PC_DMA_RECOMMENDED, &pc->flags) && drive->using_dma)
 		dma = !hwif->dma_setup(drive);
 
-	if (IDE_CONTROL_REG)
-		HWIF(drive)->OUTB(drive->ctl, IDE_CONTROL_REG);
-	/* Use PIO/DMA */
-	hwif->OUTB(dma, IDE_FEATURE_REG);
-	hwif->OUTB(bcount & 0xff, IDE_BCOUNTL_REG);
-	hwif->OUTB((bcount >> 8) & 0xff, IDE_BCOUNTH_REG);
-	HWIF(drive)->OUTB(drive->select.all, IDE_SELECT_REG);
+	ide_pktcmd_tf_load(drive, IDE_TFLAG_NO_SELECT_MASK |
+			   IDE_TFLAG_OUT_DEVICE, bcount, dma);
 
 	if (dma) {	/* Begin DMA, if necessary */
 		set_bit(PC_DMA_IN_PROGRESS, &pc->flags);
diff --git a/drivers/ide/ide-io.c b/drivers/ide/ide-io.c
index d36df77..1ed7a86 100644
--- a/drivers/ide/ide-io.c
+++ b/drivers/ide/ide-io.c
@@ -1734,3 +1734,19 @@ int ide_do_drive_cmd (ide_drive_t *drive, struct request *rq, ide_action_t actio
 }
 
 EXPORT_SYMBOL(ide_do_drive_cmd);
+
+void ide_pktcmd_tf_load(ide_drive_t *drive, u32 tf_flags, u16 bcount, u8 dma)
+{
+	ide_task_t task;
+
+	memset(&task, 0, sizeof(task));
+	task.tf_flags = IDE_TFLAG_OUT_LBAH | IDE_TFLAG_OUT_LBAM |
+			IDE_TFLAG_OUT_FEATURE | tf_flags;
+	task.tf.feature = dma;		/* Use PIO/DMA */
+	task.tf.lbam    = bcount & 0xff;
+	task.tf.lbah    = (bcount >> 8) & 0xff;
+
+	ide_tf_load(drive, &task);
+}
+
+EXPORT_SYMBOL_GPL(ide_pktcmd_tf_load);
diff --git a/drivers/ide/ide-tape.c b/drivers/ide/ide-tape.c
index d1f2446..3cbca3f 100644
--- a/drivers/ide/ide-tape.c
+++ b/drivers/ide/ide-tape.c
@@ -2171,12 +2171,9 @@ static ide_startstop_t idetape_issue_packet_command (ide_drive_t *drive, idetape
 	if (test_bit(PC_DMA_RECOMMENDED, &pc->flags) && drive->using_dma)
 		dma_ok = !hwif->dma_setup(drive);
 
-	if (IDE_CONTROL_REG)
-		hwif->OUTB(drive->ctl, IDE_CONTROL_REG);
-	hwif->OUTB(dma_ok ? 1 : 0, IDE_FEATURE_REG);	/* Use PIO/DMA */
-	hwif->OUTB(bcount & 0xff, IDE_BCOUNTL_REG);
-	hwif->OUTB((bcount >> 8) & 0xff, IDE_BCOUNTH_REG);
-	hwif->OUTB(drive->select.all, IDE_SELECT_REG);
+	ide_pktcmd_tf_load(drive, IDE_TFLAG_NO_SELECT_MASK |
+			   IDE_TFLAG_OUT_DEVICE, bcount, dma_ok);
+
 	if (dma_ok)			/* Will begin DMA later */
 		set_bit(PC_DMA_IN_PROGRESS, &pc->flags);
 	if (test_bit(IDETAPE_DRQ_INTERRUPT, &tape->flags)) {
diff --git a/drivers/scsi/ide-scsi.c b/drivers/scsi/ide-scsi.c
index 76f0ccd..02e9189 100644
--- a/drivers/scsi/ide-scsi.c
+++ b/drivers/scsi/ide-scsi.c
@@ -590,12 +590,8 @@ static ide_startstop_t idescsi_issue_pc (ide_drive_t *drive, idescsi_pc_t *pc)
 	}
 
 	SELECT_DRIVE(drive);
-	if (IDE_CONTROL_REG)
-		HWIF(drive)->OUTB(drive->ctl, IDE_CONTROL_REG);
 
-	hwif->OUTB(dma, IDE_FEATURE_REG);
-	hwif->OUTB(bcount & 0xff, IDE_BCOUNTL_REG);
-	hwif->OUTB((bcount >> 8) & 0xff, IDE_BCOUNTH_REG);
+	ide_pktcmd_tf_load(drive, IDE_TFLAG_NO_SELECT_MASK, bcount, dma);
 
 	if (dma)
 		set_bit(PC_DMA_OK, &pc->flags);