summaryrefslogtreecommitdiff
path: root/drivers/ide/pci/pdc202xx_new.c
diff options
context:
space:
mode:
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/pdc202xx_new.c
parent428c6440ef933a3d9df5adfeb2cbb3ea7ebb6a68 (diff)
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/pdc202xx_new.c')
-rw-r--r--drivers/ide/pci/pdc202xx_new.c38
1 files changed, 12 insertions, 26 deletions
diff --git a/drivers/ide/pci/pdc202xx_new.c b/drivers/ide/pci/pdc202xx_new.c
index 79ba8eff3644..ef4a99b99d1f 100644
--- a/drivers/ide/pci/pdc202xx_new.c
+++ b/drivers/ide/pci/pdc202xx_new.c
@@ -162,32 +162,18 @@ static void pdcnew_set_dma_mode(ide_drive_t *drive, const u8 speed)
if (max_dma_rate(hwif->pci_dev) == 4) {
u8 mode = speed & 0x07;
- switch (speed) {
- 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:
- set_indexed_reg(hwif, 0x10 + adj,
- udma_timings[mode].reg10);
- set_indexed_reg(hwif, 0x11 + adj,
- udma_timings[mode].reg11);
- set_indexed_reg(hwif, 0x12 + adj,
- udma_timings[mode].reg12);
- break;
- case XFER_MW_DMA_2:
- case XFER_MW_DMA_1:
- case XFER_MW_DMA_0:
- set_indexed_reg(hwif, 0x0e + adj,
- mwdma_timings[mode].reg0e);
- set_indexed_reg(hwif, 0x0f + adj,
- mwdma_timings[mode].reg0f);
- break;
- default:
- printk(KERN_ERR "pdc202xx_new: "
- "Unknown speed %d ignored\n", speed);
+ if (speed >= XFER_UDMA_0) {
+ set_indexed_reg(hwif, 0x10 + adj,
+ udma_timings[mode].reg10);
+ set_indexed_reg(hwif, 0x11 + adj,
+ udma_timings[mode].reg11);
+ set_indexed_reg(hwif, 0x12 + adj,
+ udma_timings[mode].reg12);
+ } else {
+ set_indexed_reg(hwif, 0x0e + adj,
+ mwdma_timings[mode].reg0e);
+ set_indexed_reg(hwif, 0x0f + adj,
+ mwdma_timings[mode].reg0f);
}
} else if (speed == XFER_UDMA_2) {
/* Set tHOLD bit to 0 if using UDMA mode 2 */