PCI: ATI sb600 sata quirk

Acked-by: Jeff Garzik <jeff@garzik.org>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

1 files changed, 17 insertions, 0 deletions

diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c
index 8a2db01b903e..8f0322d6f3bf 100644
--- a/drivers/pci/quirks.c
+++ b/drivers/pci/quirks.c
@@ -850,6 +850,23 @@ DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL,	PCI_DEVICE_ID_INTEL_82454NX,	quirk_
 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL,   PCI_DEVICE_ID_INTEL_82454NX,    quirk_disable_pxb );
 
 
+static void __devinit quirk_sb600_sata(struct pci_dev *pdev)
+{
+        /* set sb600 sata to ahci mode */
+        if ((pdev->class >> 8) == PCI_CLASS_STORAGE_IDE) {
+                u8 tmp;
+
+                pci_read_config_byte(pdev, 0x40, &tmp);
+                pci_write_config_byte(pdev, 0x40, tmp|1);
+                pci_write_config_byte(pdev, 0x9, 1);
+                pci_write_config_byte(pdev, 0xa, 6);
+                pci_write_config_byte(pdev, 0x40, tmp);
+
+                pdev->class = 0x010601;
+        }
+}
+DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_IXP600_SATA, quirk_sb600_sata);
+
 /*
  *      Serverworks CSB5 IDE does not fully support native mode
  */