diff options
| author | Alessandro Rubini <rubini@gnudd.com> | 2012-01-06 13:33:39 +0100 |
|---|---|---|
| committer | Jeff Garzik <jgarzik@redhat.com> | 2012-01-09 01:24:06 +0100 |
| commit | 318893e1429a9d50569a0379d1e20b0ecc45c555 (patch) | |
| tree | 78ae2f04ce3706867cf6f957271ff467b3416cf3 /drivers/ata | |
| parent | pata_bf54x: fix BMIDE status register emulation (diff) | |
| download | linux-318893e1429a9d50569a0379d1e20b0ecc45c555.tar.xz linux-318893e1429a9d50569a0379d1e20b0ecc45c555.zip | |
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>
Diffstat (limited to 'drivers/ata')
| -rw-r--r-- | drivers/ata/ahci.c | 26 |
1 files changed, 21 insertions, 5 deletions
diff --git a/drivers/ata/ahci.c b/drivers/ata/ahci.c index cf26222a93c5..d07bf0366d99 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 @@ static const struct pci_device_id ahci_pci_tbl[] = { { 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 @@ static int ahci_configure_dma_masks(struct pci_dev *pdev, int using_dac) { 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 @@ static int ahci_init_one(struct pci_dev *pdev, const struct pci_device_id *ent) 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 @@ 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 */ + 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 @@ static int ahci_init_one(struct pci_dev *pdev, const struct pci_device_id *ent) /* 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 @@ static int ahci_init_one(struct pci_dev *pdev, const struct pci_device_id *ent) 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 @@ static int ahci_init_one(struct pci_dev *pdev, const struct pci_device_id *ent) 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 */ |