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 <shawn@xxxxxxxxxx> Signed-off-by: Brandon Philips <bphilips@xxxxxxx> --- drivers/ide/it821x.c | 13 +++++++++++++ include/linux/pci_ids.h | 1 + 2 files changed, 14 insertions(+) Index: linux-2.6/drivers/ide/it821x.c =================================================================== --- linux-2.6.orig/drivers/ide/it821x.c +++ linux-2.6/drivers/ide/it821x.c @@ -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 @@ -580,6 +583,13 @@ static void __devinit init_hwif_it821x(i 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) { + pci_read_config_byte(dev, 0x08, &conf); + if (conf == 0x11) + hwif->ultra_mask = 0; + } } static void it8212_disable_raid(struct pci_dev *dev) @@ -652,6 +662,8 @@ static int __devinit it821x_init_one(str return -ENOMEM; } + itdevs->quirks = id->driver_data; + rc = ide_pci_init_one(dev, &it821x_chipset, itdevs); if (rc) kfree(itdevs); @@ -671,6 +683,7 @@ static void __devexit it821x_remove(stru 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, }, }; Index: linux-2.6/include/linux/pci_ids.h =================================================================== --- linux-2.6.orig/include/linux/pci_ids.h +++ linux-2.6/include/linux/pci_ids.h @@ -2173,6 +2173,7 @@ #define PCI_DEVICE_ID_RDC_R6040 0x6040 #define PCI_DEVICE_ID_RDC_R6060 0x6060 #define PCI_DEVICE_ID_RDC_R6061 0x6061 +#define PCI_DEVICE_ID_RDC_D1010 0x1010 #define PCI_VENDOR_ID_LENOVO 0x17aa -- To unsubscribe from this list: send the line "unsubscribe linux-ide" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
