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Commit e5c073ff authored by Conke Hu's avatar Conke Hu Committed by Bartlomiej Zolnierkiewicz
Browse files

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: default avatarConke Hu <conke.hu@amd.com>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: Greg KH <greg@kroah.com>
Signed-off-by: default avatarAndrew Morton <akpm@osdl.org>
Signed-off-by: default avatarBartlomiej Zolnierkiewicz <bzolnier@gmail.com>
parent b25168df

drivers/ide/pci/atiixp.c

+11 −3
Original line number Diff line number Diff line
@@ -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 */

	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;