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atiixp.c: add cable detection support for ATI IDE 

IDE HDD does not work if it uses a 40-pin PATA cable on ATI chipset.
This patch fixes the bug.

Signed-off-by: Conke Hu <conke.hu@amd.com>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: Greg KH <greg@kroah.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
This commit is contained in:
Conke Hu 2007-01-27 13:46:40 +01:00 committed by Bartlomiej Zolnierkiewicz
parent b25168dfdc
commit e5c073ff24
1 changed files with 11 additions and 3 deletions
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14
drivers/ide/pci/atiixp.c
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@ -291,8 +291,12 @@ fast_ata_pio:
static void __devinit init_hwif_atiixp(ide_hwif_t *hwif)
{
u8 udma_mode = 0;
u8 ch = hwif->channel;
struct pci_dev *pdev = hwif->pci_dev;
if (!hwif->irq)
hwif->irq = hwif->channel ? 15 : 14;
hwif->irq = ch ? 15 : 14;
hwif->autodma = 0;
hwif->tuneproc = &atiixp_tuneproc;
@ -308,8 +312,12 @@ static void __devinit init_hwif_atiixp(ide_hwif_t *hwif)
hwif->mwdma_mask = 0x06;
hwif->swdma_mask = 0x04;
/* FIXME: proper cable detection needed */
hwif->udma_four = 1;
pci_read_config_byte(pdev, ATIIXP_IDE_UDMA_MODE + ch, &udma_mode);
if ((udma_mode & 0x07) >= 0x04 || (udma_mode & 0x70) >= 0x40)
hwif->udma_four = 1;
else
hwif->udma_four = 0;
hwif->ide_dma_host_on = &atiixp_ide_dma_host_on;
hwif->ide_dma_host_off = &atiixp_ide_dma_host_off;
hwif->ide_dma_check = &atiixp_dma_check;