ide: pass command to ide_map_sg()
* 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>
diff --git a/drivers/ide/ide-dma.c b/drivers/ide/ide-dma.c
index 8f5e32e..ad4edab 100644
--- a/drivers/ide/ide-dma.c
+++ b/drivers/ide/ide-dma.c
@@ -120,7 +120,7 @@
/**
* ide_build_sglist - map IDE scatter gather for DMA I/O
* @drive: the drive to build the DMA table for
- * @rq: the request holding the sg list
+ * @cmd: command
*
* Perform the DMA mapping magic necessary to access the source or
* target buffers of a request via DMA. The lower layers of the
@@ -128,23 +128,22 @@
* operate in a portable fashion.
*/
-int ide_build_sglist(ide_drive_t *drive, struct request *rq)
+int ide_build_sglist(ide_drive_t *drive, struct ide_cmd *cmd)
{
ide_hwif_t *hwif = drive->hwif;
struct scatterlist *sg = hwif->sg_table;
- struct ide_cmd *cmd = &hwif->cmd;
int i;
- ide_map_sg(drive, rq);
+ ide_map_sg(drive, cmd);
- if (rq_data_dir(rq) == READ)
- cmd->sg_dma_direction = DMA_FROM_DEVICE;
- else
+ if (cmd->tf_flags & IDE_TFLAG_WRITE)
cmd->sg_dma_direction = DMA_TO_DEVICE;
+ else
+ cmd->sg_dma_direction = DMA_FROM_DEVICE;
i = dma_map_sg(hwif->dev, sg, cmd->sg_nents, cmd->sg_dma_direction);
if (i == 0)
- ide_map_sg(drive, rq);
+ ide_map_sg(drive, cmd);
else {
cmd->orig_sg_nents = cmd->sg_nents;
cmd->sg_nents = i;