ahci: support the STA2X11 I/O Hub
The AHCI controller found in the STA2X11 chip uses BAR number 0
instead of 5. Also, the chip's fixup code sets a special DMA mask
for all of its PCI functions, and the mask must be preserved here.
Signed-off-by: Alessandro Rubini <rubini@gnudd.com>
Acked-by: Giancarlo Asnaghi <giancarlo.asnaghi@st.com>
Cc: Alan Cox <alan@linux.intel.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
diff --git a/drivers/ata/ahci.c b/drivers/ata/ahci.c
index cf26222..d07bf03 100644
--- a/drivers/ata/ahci.c
+++ b/drivers/ata/ahci.c
@@ -52,7 +52,8 @@
#define DRV_VERSION "3.0"
enum {
- AHCI_PCI_BAR = 5,
+ AHCI_PCI_BAR_STA2X11 = 0,
+ AHCI_PCI_BAR_STANDARD = 5,
};
enum board_ids {
@@ -375,6 +376,9 @@
{ PCI_VDEVICE(SI, 0x1185), board_ahci }, /* SiS 968 */
{ PCI_VDEVICE(SI, 0x0186), board_ahci }, /* SiS 968 */
+ /* ST Microelectronics */
+ { PCI_VDEVICE(STMICRO, 0xCC06), board_ahci }, /* ST ConneXt */
+
/* Marvell */
{ PCI_VDEVICE(MARVELL, 0x6145), board_ahci_mv }, /* 6145 */
{ PCI_VDEVICE(MARVELL, 0x6121), board_ahci_mv }, /* 6121 */
@@ -622,6 +626,13 @@
{
int rc;
+ /*
+ * If the device fixup already set the dma_mask to some non-standard
+ * value, don't extend it here. This happens on STA2X11, for example.
+ */
+ if (pdev->dma_mask && pdev->dma_mask < DMA_BIT_MASK(32))
+ return 0;
+
if (using_dac &&
!pci_set_dma_mask(pdev, DMA_BIT_MASK(64))) {
rc = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64));
@@ -1026,6 +1037,7 @@
struct ahci_host_priv *hpriv;
struct ata_host *host;
int n_ports, i, rc;
+ int ahci_pci_bar = AHCI_PCI_BAR_STANDARD;
VPRINTK("ENTER\n");
@@ -1057,6 +1069,10 @@
dev_info(&pdev->dev,
"PDC42819 can only drive SATA devices with this driver\n");
+ /* The Connext uses non-standard BAR */
+ if (pdev->vendor == PCI_VENDOR_ID_STMICRO && pdev->device == 0xCC06)
+ ahci_pci_bar = AHCI_PCI_BAR_STA2X11;
+
/* acquire resources */
rc = pcim_enable_device(pdev);
if (rc)
@@ -1065,7 +1081,7 @@
/* AHCI controllers often implement SFF compatible interface.
* Grab all PCI BARs just in case.
*/
- rc = pcim_iomap_regions_request_all(pdev, 1 << AHCI_PCI_BAR, DRV_NAME);
+ rc = pcim_iomap_regions_request_all(pdev, 1 << ahci_pci_bar, DRV_NAME);
if (rc == -EBUSY)
pcim_pin_device(pdev);
if (rc)
@@ -1108,7 +1124,7 @@
if ((hpriv->flags & AHCI_HFLAG_NO_MSI) || pci_enable_msi(pdev))
pci_intx(pdev, 1);
- hpriv->mmio = pcim_iomap_table(pdev)[AHCI_PCI_BAR];
+ hpriv->mmio = pcim_iomap_table(pdev)[ahci_pci_bar];
/* save initial config */
ahci_pci_save_initial_config(pdev, hpriv);
@@ -1172,8 +1188,8 @@
for (i = 0; i < host->n_ports; i++) {
struct ata_port *ap = host->ports[i];
- ata_port_pbar_desc(ap, AHCI_PCI_BAR, -1, "abar");
- ata_port_pbar_desc(ap, AHCI_PCI_BAR,
+ ata_port_pbar_desc(ap, ahci_pci_bar, -1, "abar");
+ ata_port_pbar_desc(ap, ahci_pci_bar,
0x100 + ap->port_no * 0x80, "port");
/* set enclosure management message type */