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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
parent 130e886708
commit 2298169418
17 changed files with 101 additions and 114 deletions
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6
drivers/ide/ide-io.c
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@ -228,11 +228,11 @@ static ide_startstop_t do_special (ide_drive_t *drive)
return ide_stopped;
}
void ide_map_sg(ide_drive_t *drive, struct request *rq)
void ide_map_sg(ide_drive_t *drive, struct ide_cmd *cmd)
{
ide_hwif_t *hwif = drive->hwif;
struct ide_cmd *cmd = &hwif->cmd;
struct scatterlist *sg = hwif->sg_table;
struct request *rq = cmd->rq;
if (rq->cmd_type == REQ_TYPE_ATA_TASKFILE) {
sg_init_one(sg, rq->buffer, rq->nr_sectors * SECTOR_SIZE);
@ -273,7 +273,7 @@ static ide_startstop_t execute_drive_cmd (ide_drive_t *drive,
if (cmd) {
if (cmd->protocol == ATA_PROT_PIO) {
ide_init_sg_cmd(cmd, rq->nr_sectors);
ide_map_sg(drive, rq);
ide_map_sg(drive, cmd);
}
return do_rw_taskfile(drive, cmd);