Commit 318893e1 authored by Alessandro Rubini's avatar Alessandro Rubini Committed by Jeff Garzik
Browse files

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: default avatarAlessandro Rubini <rubini@gnudd.com>
Acked-by: default avatarGiancarlo Asnaghi <giancarlo.asnaghi@st.com>
Cc: Alan Cox <alan@linux.intel.com>
Signed-off-by: default avatarJeff Garzik <jgarzik@redhat.com>
parent 909fefc2

drivers/ata/ahci.c

+21 −5
Original line number Diff line number Diff line
@@ -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 */

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