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ide: use ide_build_sglist() and ide_destroy_dmatable() in non-PCI host drivers

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* 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>
This commit is contained in:
Bartlomiej Zolnierkiewicz 2008-02-01 23:09:32 +01:00
parent 5c05ff68b9
commit 062f9f024d
4 changed files with 11 additions and 47 deletions
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21
drivers/ide/arm/icside.c
View file

@ -204,22 +204,6 @@ static void icside_maskproc(ide_drive_t *drive, int mask)
* 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 @@ static int icside_dma_end(ide_drive_t *drive)
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 @@ static int icside_dma_setup(ide_drive_t *drive)
*/
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.

4
drivers/ide/ide-dma.c
View file

@ -170,7 +170,6 @@ static int ide_dma_good_drive(ide_drive_t *drive)
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 @@ int ide_build_sglist(ide_drive_t *drive, struct request *rq)
EXPORT_SYMBOL_GPL(ide_build_sglist);
#ifdef CONFIG_BLK_DEV_IDEDMA_PCI
/**
* ide_build_dmatable - build IDE DMA table
*
@ -294,6 +294,7 @@ int ide_build_dmatable (ide_drive_t *drive, struct request *rq)
}
EXPORT_SYMBOL_GPL(ide_build_dmatable);
#endif
/**
* ide_destroy_dmatable - clean up DMA mapping
@ -316,6 +317,7 @@ void ide_destroy_dmatable (ide_drive_t *drive)
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

28
drivers/ide/mips/au1xxx-ide.c
View file

@ -209,23 +209,6 @@ 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_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 @@ static int auide_build_dmatable(ide_drive_t *drive)
/* 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 @@ static int auide_build_dmatable(ide_drive_t *drive)
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 @@ static int auide_dma_end(ide_drive_t *drive)
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;
}

5
include/linux/ide.h
View file

@ -1155,10 +1155,11 @@ void ide_dma_on(ide_drive_t *);
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);