[libata] ahci: Add support for Enmotus Bobcat device.

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>

1 files changed, 7 insertions, 1 deletions

diff --git a/drivers/ata/ahci.c b/drivers/ata/ahci.c
index 7862d17976b7..497912732566 100644
--- 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,
 };
 
@@ -410,6 +411,9 @@ 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 },
@@ -1098,9 +1102,11 @@ 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);