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ide: pass command to ide_map_sg()

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* Set IDE_TFLAG_WRITE flag and ->rq also for ATA_CMD_PACKET
  commands.

* Pass command to ->dma_setup method and update all its
  implementations accordingly.

* Pass command instead of request to ide_build_sglist(),
  *_build_dmatable() and ide_map_sg().

While at it:

* Fix scc_dma_setup() documentation + use ATA_DMA_WR define.

* Rename sgiioc4_build_dma_table() to sgiioc4_build_dmatable(),
  change return value type to 'int' and drop unused 'ddir'
  argument.

* Do some minor cleanups in [tx4939]ide_dma_setup().

There should be no functional changes caused by this patch.

Acked-by: Borislav Petkov <petkovbb@gmail.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
This commit is contained in:
Bartlomiej Zolnierkiewicz
2009-03-27 12:46:46 +01:00
vanhempi 130e886708
commit 2298169418
17 muutettua tiedostoa jossa 101 lisäystä ja 114 poistoa
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15
drivers/ide/au1xxx-ide.c
Näytä tiedosto

@@ -209,15 +209,14 @@ static void auide_set_dma_mode(ide_drive_t *drive, const u8 speed)
*/
#ifdef CONFIG_BLK_DEV_IDE_AU1XXX_MDMA2_DBDMA
static int auide_build_dmatable(ide_drive_t *drive)
static int auide_build_dmatable(ide_drive_t *drive, struct ide_cmd *cmd)
{
ide_hwif_t *hwif = drive->hwif;
struct request *rq = hwif->rq;
_auide_hwif *ahwif = &auide_hwif;
struct scatterlist *sg;
int i = hwif->cmd.sg_nents, iswrite, count = 0;
int i = cmd->sg_nents, count = 0;
int iswrite = !!(cmd->tf_flags & IDE_TFLAG_WRITE);
iswrite = (rq_data_dir(rq) == WRITE);
/* Save for interrupt context */
ahwif->drive = drive;
@@ -298,12 +297,10 @@ static void auide_dma_exec_cmd(ide_drive_t *drive, u8 command)
(2*WAIT_CMD), NULL);
}
static int auide_dma_setup(ide_drive_t *drive)
static int auide_dma_setup(ide_drive_t *drive, struct ide_cmd *cmd)
{
struct request *rq = drive->hwif->rq;
if (!auide_build_dmatable(drive)) {
ide_map_sg(drive, rq);
if (auide_build_dmatable(drive, cmd) == 0) {
ide_map_sg(drive, cmd);
return 1;
}