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it821x: Add ultra_mask quirk for Vortex86SX

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On Vortex86SX with IDE controller revision 0x11 ultra DMA must be
disabled. This patch was tested by DMP and seems to work.

It is a cleaned up version of their older Kernel patch: 
 http://www.dmp.com.tw/tech/vortex86sx/patch-2.6.24-DMP.gz

Tested-by: Shawn Lin <[email protected]>
Signed-off-by: Brandon Philips <[email protected]>
Cc: Alan Cox <[email protected]>
Signed-off-by: Bartlomiej Zolnierkiewicz <[email protected]>
This commit is contained in:
Brandon Philips 2009-01-14 19:19:02 +01:00 • committed by Bartlomiej Zolnierkiewicz
commit b94b898f31
2 changed files with 13 additions and 0 deletions
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12
drivers/ide/it821x.c
View file

@ -68,6 +68,8 @@
#define DRV_NAME "it821x"
#define QUIRK_VORTEX86 1
struct it821x_dev
{
unsigned int smart:1, /* Are we in smart raid mode */
@ -79,6 +81,7 @@ struct it821x_dev
u16 pio[2]; /* Cached PIO values */
u16 mwdma[2]; /* Cached MWDMA values */
u16 udma[2]; /* Cached UDMA values (per drive) */
u16 quirks;
};
#define ATA_66 0
@ -577,6 +580,12 @@ static void __devinit init_hwif_it821x(ide_hwif_t *hwif)
hwif->ultra_mask = ATA_UDMA6;
hwif->mwdma_mask = ATA_MWDMA2;
/* Vortex86SX quirk: prevent Ultra-DMA mode to fix BadCRC issue */
if (idev->quirks & QUIRK_VORTEX86) {
if (dev->revision == 0x11)
hwif->ultra_mask = 0;
}
}
static void it8212_disable_raid(struct pci_dev *dev)
@ -649,6 +658,8 @@ static int __devinit it821x_init_one(struct pci_dev *dev, const struct pci_devic
return -ENOMEM;
}
itdevs->quirks = id->driver_data;
rc = ide_pci_init_one(dev, &it821x_chipset, itdevs);
if (rc)
kfree(itdevs);
@ -668,6 +679,7 @@ static void __devexit it821x_remove(struct pci_dev *dev)
static const struct pci_device_id it821x_pci_tbl[] = {
{ PCI_VDEVICE(ITE, PCI_DEVICE_ID_ITE_8211), 0 },
{ PCI_VDEVICE(ITE, PCI_DEVICE_ID_ITE_8212), 0 },
{ PCI_VDEVICE(RDC, PCI_DEVICE_ID_RDC_D1010), QUIRK_VORTEX86 },
{ 0, },
};