ahci: Add support for Enmotus Bobcat device.

commit 7f9c9f8e24590e7dcd26ca408458c43df5b83e61 upstream.

Silicon does not support standard AHCI BAR assignment.  Add
vendor/device exception to force BAR 2.

Signed-off-by: Hugh Daschbach <hugh.daschbach@enmotus.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>

diff --git a/drivers/ata/ahci.c b/drivers/ata/ahci.c
index 425ffa4..62c1325 100644 (file)
--- a/drivers/ata/ahci.c
+++ b/drivers/ata/ahci.c
@@ -53,6 +53,7 @@
 
 enum {
        AHCI_PCI_BAR_STA2X11    = 0,
+       AHCI_PCI_BAR_ENMOTUS    = 2,
        AHCI_PCI_BAR_STANDARD   = 5,
 };
 
@@ -404,6 +405,9 @@ static const struct pci_device_id ahci_pci_tbl[] = {
        { PCI_VDEVICE(ASMEDIA, 0x0611), board_ahci },   /* ASM1061 */
        { PCI_VDEVICE(ASMEDIA, 0x0612), board_ahci },   /* ASM1062 */
 
+       /* Enmotus */
+       { PCI_DEVICE(0x1c44, 0x8000), board_ahci },
+
        /* Generic, PCI class code for AHCI */
        { PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID,
          PCI_CLASS_STORAGE_SATA_AHCI, 0xffffff, board_ahci },
@@ -1076,9 +1080,11 @@ static int ahci_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
                dev_info(&pdev->dev,
                         "PDC42819 can only drive SATA devices with this driver\n");
 
-       /* The Connext uses non-standard BAR */
+       /* Both Connext and Enmotus devices use non-standard BARs */
        if (pdev->vendor == PCI_VENDOR_ID_STMICRO && pdev->device == 0xCC06)
                ahci_pci_bar = AHCI_PCI_BAR_STA2X11;
+       else if (pdev->vendor == 0x1c44 && pdev->device == 0x8000)
+               ahci_pci_bar = AHCI_PCI_BAR_ENMOTUS;
 
        /* acquire resources */
        rc = pcim_enable_device(pdev);