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Commit bd12097c authored by Jeff Garzik's avatar Jeff Garzik
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[libata ahci] Isolate Intel-ism, add JMicron JMB360 support 

Isolate some PCI config register bitbanging to Intel hardware, as it
should have been all along.

Add support for JMicron JMB360.
parent 3ee68c4a

drivers/scsi/ahci.c

+13 −4
Original line number Original line Diff line number Diff line
@@ -286,6 +286,8 @@ static const struct pci_device_id ahci_pci_tbl[] = { 
	  board_ahci }, /* ICH8M */

	  board_ahci }, /* ICH8M */

	{ PCI_VENDOR_ID_INTEL, 0x282a, PCI_ANY_ID, PCI_ANY_ID, 0, 0,

	{ PCI_VENDOR_ID_INTEL, 0x282a, PCI_ANY_ID, PCI_ANY_ID, 0, 0,

	  board_ahci }, /* ICH8M */

	  board_ahci }, /* ICH8M */

	{ 0x197b, 0x2360, PCI_ANY_ID, PCI_ANY_ID, 0, 0,

	  board_ahci }, /* JMicron JMB360 */

	{ }	/* terminate list */

	{ }	/* terminate list */

};

};
@@ -802,7 +804,6 @@ static int ahci_host_init(struct ata_probe_ent *probe_ent) 
	struct pci_dev *pdev = to_pci_dev(probe_ent->dev);

	struct pci_dev *pdev = to_pci_dev(probe_ent->dev);

	void __iomem *mmio = probe_ent->mmio_base;

	void __iomem *mmio = probe_ent->mmio_base;

	u32 tmp, cap_save;

	u32 tmp, cap_save;

	u16 tmp16;

	unsigned int i, j, using_dac;

	unsigned int i, j, using_dac;

	int rc;

	int rc;

	void __iomem *port_mmio;

	void __iomem *port_mmio;
@@ -836,9 +837,13 @@ static int ahci_host_init(struct ata_probe_ent *probe_ent) 
	writel(0xf, mmio + HOST_PORTS_IMPL);

	writel(0xf, mmio + HOST_PORTS_IMPL);

	(void) readl(mmio + HOST_PORTS_IMPL);	/* flush */

	(void) readl(mmio + HOST_PORTS_IMPL);	/* flush */





	if (pdev->vendor == PCI_VENDOR_ID_INTEL) {

		u16 tmp16;



		pci_read_config_word(pdev, 0x92, &tmp16);

		pci_read_config_word(pdev, 0x92, &tmp16);

		tmp16 |= 0xf;

		tmp16 |= 0xf;

		pci_write_config_word(pdev, 0x92, tmp16);

		pci_write_config_word(pdev, 0x92, tmp16);

	}





	hpriv->cap = readl(mmio + HOST_CAP);

	hpriv->cap = readl(mmio + HOST_CAP);

	hpriv->port_map = readl(mmio + HOST_PORTS_IMPL);

	hpriv->port_map = readl(mmio + HOST_PORTS_IMPL);
@@ -1082,6 +1087,10 @@ static int ahci_init_one (struct pci_dev *pdev, const struct pci_device_id *ent) 
	if (have_msi)

	if (have_msi)

		hpriv->flags |= AHCI_FLAG_MSI;

		hpriv->flags |= AHCI_FLAG_MSI;





	/* JMicron-specific fixup: make sure we're in AHCI mode */

	if (pdev->vendor == 0x197b)

		pci_write_config_byte(pdev, 0x41, 0xa1);



	/* initialize adapter */

	/* initialize adapter */

	rc = ahci_host_init(probe_ent);

	rc = ahci_host_init(probe_ent);

	if (rc)

	if (rc)