ide: use ide_build_sglist() and ide_destroy_dmatable() in non-PCI host drivers
* Make ide_build_sglist() and ide_destroy_dmatable() available also when
CONFIG_BLK_DEV_IDEDMA_PCI=n.
* Use ide_build_sglist() and ide_destroy_dmatable() in {ics,au1xxx-}ide.c
and remove no longer needed {ics,au}ide_build_sglist().
There should be no functionality changes caused by this patch.
Cc: Russell King <rmk@arm.linux.org.uk>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
diff --git a/drivers/ide/arm/icside.c b/drivers/ide/arm/icside.c
index 774b87e..12cbb5d 100644
--- a/drivers/ide/arm/icside.c
+++ b/drivers/ide/arm/icside.c
@@ -204,22 +204,6 @@
* interfaces use the same IRQ, which should guarantee this.
*/
-static void icside_build_sglist(ide_drive_t *drive, struct request *rq)
-{
- ide_hwif_t *hwif = drive->hwif;
- struct scatterlist *sg = hwif->sg_table;
-
- ide_map_sg(drive, rq);
-
- if (rq_data_dir(rq) == READ)
- hwif->sg_dma_direction = DMA_FROM_DEVICE;
- else
- hwif->sg_dma_direction = DMA_TO_DEVICE;
-
- hwif->sg_nents = dma_map_sg(hwif->dev, sg, hwif->sg_nents,
- hwif->sg_dma_direction);
-}
-
/*
* Configure the IOMD to give the appropriate timings for the transfer
* mode being requested. We take the advice of the ATA standards, and
@@ -298,8 +282,7 @@
disable_dma(ec->dma);
/* Teardown mappings after DMA has completed. */
- dma_unmap_sg(hwif->dev, hwif->sg_table, hwif->sg_nents,
- hwif->sg_dma_direction);
+ ide_destroy_dmatable(drive);
return get_dma_residue(ec->dma) != 0;
}
@@ -331,7 +314,7 @@
*/
BUG_ON(dma_channel_active(ec->dma));
- icside_build_sglist(drive, rq);
+ hwif->sg_nents = ide_build_sglist(drive, rq);
/*
* Ensure that we have the right interrupt routed.
diff --git a/drivers/ide/ide-dma.c b/drivers/ide/ide-dma.c
index ec7c5c8..64fd78b 100644
--- a/drivers/ide/ide-dma.c
+++ b/drivers/ide/ide-dma.c
@@ -170,7 +170,6 @@
return ide_in_drive_list(drive->id, drive_whitelist);
}
-#ifdef CONFIG_BLK_DEV_IDEDMA_PCI
/**
* ide_build_sglist - map IDE scatter gather for DMA I/O
* @drive: the drive to build the DMA table for
@@ -200,6 +199,7 @@
EXPORT_SYMBOL_GPL(ide_build_sglist);
+#ifdef CONFIG_BLK_DEV_IDEDMA_PCI
/**
* ide_build_dmatable - build IDE DMA table
*
@@ -294,6 +294,7 @@
}
EXPORT_SYMBOL_GPL(ide_build_dmatable);
+#endif
/**
* ide_destroy_dmatable - clean up DMA mapping
@@ -316,6 +317,7 @@
EXPORT_SYMBOL_GPL(ide_destroy_dmatable);
+#ifdef CONFIG_BLK_DEV_IDEDMA_PCI
/**
* config_drive_for_dma - attempt to activate IDE DMA
* @drive: the drive to place in DMA mode
diff --git a/drivers/ide/mips/au1xxx-ide.c b/drivers/ide/mips/au1xxx-ide.c
index 7ec96a0..ed1a285 100644
--- a/drivers/ide/mips/au1xxx-ide.c
+++ b/drivers/ide/mips/au1xxx-ide.c
@@ -209,23 +209,6 @@
*/
#ifdef CONFIG_BLK_DEV_IDE_AU1XXX_MDMA2_DBDMA
-
-static int auide_build_sglist(ide_drive_t *drive, struct request *rq)
-{
- ide_hwif_t *hwif = drive->hwif;
- struct scatterlist *sg = hwif->sg_table;
-
- ide_map_sg(drive, rq);
-
- if (rq_data_dir(rq) == READ)
- hwif->sg_dma_direction = DMA_FROM_DEVICE;
- else
- hwif->sg_dma_direction = DMA_TO_DEVICE;
-
- return dma_map_sg(hwif->dev, sg, hwif->sg_nents,
- hwif->sg_dma_direction);
-}
-
static int auide_build_dmatable(ide_drive_t *drive)
{
int i, iswrite, count = 0;
@@ -240,8 +223,7 @@
/* Save for interrupt context */
ahwif->drive = drive;
- /* Build sglist */
- hwif->sg_nents = i = auide_build_sglist(drive, rq);
+ hwif->sg_nents = i = ide_build_sglist(drive, rq);
if (!i)
return 0;
@@ -299,10 +281,7 @@
return 1;
use_pio_instead:
- dma_unmap_sg(hwif->dev,
- hwif->sg_table,
- hwif->sg_nents,
- hwif->sg_dma_direction);
+ ide_destroy_dmatable(drive);
return 0; /* revert to PIO for this request */
}
@@ -312,8 +291,7 @@
ide_hwif_t *hwif = HWIF(drive);
if (hwif->sg_nents) {
- dma_unmap_sg(hwif->dev, hwif->sg_table, hwif->sg_nents,
- hwif->sg_dma_direction);
+ ide_destroy_dmatable(drive);
hwif->sg_nents = 0;
}
diff --git a/include/linux/ide.h b/include/linux/ide.h
index ae965a3..ae83c4a 100644
--- a/include/linux/ide.h
+++ b/include/linux/ide.h
@@ -1155,10 +1155,11 @@
int ide_set_dma(ide_drive_t *);
ide_startstop_t ide_dma_intr(ide_drive_t *);
+int ide_build_sglist(ide_drive_t *, struct request *);
+void ide_destroy_dmatable(ide_drive_t *);
+
#ifdef CONFIG_BLK_DEV_IDEDMA_PCI
-extern int ide_build_sglist(ide_drive_t *, struct request *);
extern int ide_build_dmatable(ide_drive_t *, struct request *);
-extern void ide_destroy_dmatable(ide_drive_t *);
extern int ide_release_dma(ide_hwif_t *);
extern void ide_setup_dma(ide_hwif_t *, unsigned long);