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Subject[patch 20/43] it821x: Add ultra_mask quirk for Vortex86SX
2.6.28-stable review patch.  If anyone has any objections, please let us know.

------------------

From: Brandon Philips <brandon@ifup.org>

commit b94b898f3107046b5c97c556e23529283ea5eadd upstream.

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@dmp.com.tw>
Signed-off-by: Brandon Philips <bphilips@suse.de>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

---
drivers/ide/it821x.c | 12 ++++++++++++
include/linux/pci_ids.h | 1 +
2 files changed, 13 insertions(+)

--- a/drivers/ide/it821x.c
+++ b/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 +583,12 @@ 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) {
+ if (dev->revision == 0x11)
+ hwif->ultra_mask = 0;
+ }
}

static void it8212_disable_raid(struct pci_dev *dev)
@@ -652,6 +661,8 @@ 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 +682,7 @@ 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, },
};

--- a/include/linux/pci_ids.h
+++ b/include/linux/pci_ids.h
@@ -2171,6 +2171,7 @@
#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



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