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authorBartlomiej Zolnierkiewicz <bzolnier@gmail.com>2008-01-25 22:17:18 +0100
committerBartlomiej Zolnierkiewicz <bzolnier@gmail.com>2008-01-25 22:17:18 +0100
commit4db90a145292327b95b03f6dcd3352327235cc36 (patch)
treec48ba5fc31e27d6fbdb8883151bdf237e7eb1920 /drivers/ide/pci/siimage.c
parent428c6440ef933a3d9df5adfeb2cbb3ea7ebb6a68 (diff)
downloadlwn-4db90a145292327b95b03f6dcd3352327235cc36.tar.gz
lwn-4db90a145292327b95b03f6dcd3352327235cc36.zip
ide: add IDE_HFLAG_ABUSE_SET_DMA_MODE host flag
* Add IDE_HFLAG_ABUSE_SET_DMA_MODE host flag and use it to decide what to do with transfer modes < XFER_PIO_0 in ide_set_xfer_rate(). * Set IDE_HFLAG_ABUSE_SET_DMA_MODE in host drivers that need it (aec62xx, amd74xx, cs5520, cs5535, hpt34x, hpt366, pdc202xx_old, serverworks, tc86c001 and via82cxxx) and cleanup ->set_dma_mode methods in host drivers that don't (IDE core code guarantees that ->set_dma_mode will be called only for modes which are present in SWDMA/MWDMA/UDMA masks). While at it: * Add IDE_HFLAGS_HPT34X/HPT3XX/PDC202XX/SVWKS define in hpt34x/hpt366/pdc202xx_old/serverworks host driver. There should be no functionality changes caused by this patch. Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Diffstat (limited to 'drivers/ide/pci/siimage.c')
-rw-r--r--drivers/ide/pci/siimage.c29
1 files changed, 8 insertions, 21 deletions
diff --git a/drivers/ide/pci/siimage.c b/drivers/ide/pci/siimage.c
index 5709c252543b..7b45eaf5afd9 100644
--- a/drivers/ide/pci/siimage.c
+++ b/drivers/ide/pci/siimage.c
@@ -278,27 +278,14 @@ static void sil_set_dma_mode(ide_drive_t *drive, const u8 speed)
scsc = is_sata(hwif) ? 1 : scsc;
- switch(speed) {
- case XFER_MW_DMA_2:
- case XFER_MW_DMA_1:
- case XFER_MW_DMA_0:
- multi = dma[speed - XFER_MW_DMA_0];
- mode |= ((unit) ? 0x20 : 0x02);
- break;
- case XFER_UDMA_6:
- case XFER_UDMA_5:
- case XFER_UDMA_4:
- case XFER_UDMA_3:
- case XFER_UDMA_2:
- case XFER_UDMA_1:
- case XFER_UDMA_0:
- multi = dma[2];
- ultra |= ((scsc) ? (ultra6[speed - XFER_UDMA_0]) :
- (ultra5[speed - XFER_UDMA_0]));
- mode |= ((unit) ? 0x30 : 0x03);
- break;
- default:
- return;
+ if (speed >= XFER_UDMA_0) {
+ multi = dma[2];
+ ultra |= (scsc ? ultra6[speed - XFER_UDMA_0] :
+ ultra5[speed - XFER_UDMA_0]);
+ mode |= (unit ? 0x30 : 0x03);
+ } else {
+ multi = dma[speed - XFER_MW_DMA_0];
+ mode |= (unit ? 0x20 : 0x02);
}
if (hwif->mmio) {