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>
diff --git a/drivers/ide/pci/siimage.c b/drivers/ide/pci/siimage.c
index 5709c25..7b45eaf 100644
--- a/drivers/ide/pci/siimage.c
+++ b/drivers/ide/pci/siimage.c
@@ -278,27 +278,14 @@
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) {