diff options
Diffstat (limited to 'drivers/ata/sata_vsc.c')
| -rw-r--r-- | drivers/ata/sata_vsc.c | 44 |
1 files changed, 41 insertions, 3 deletions
diff --git a/drivers/ata/sata_vsc.c b/drivers/ata/sata_vsc.c index 0fa1b89f76d..1a5f3578894 100644 --- a/drivers/ata/sata_vsc.c +++ b/drivers/ata/sata_vsc.c @@ -94,8 +94,14 @@ enum { VSC_SATA_INT_ERROR_P | VSC_SATA_INT_ERROR_R | \ VSC_SATA_INT_ERROR_E | VSC_SATA_INT_ERROR_M | \ VSC_SATA_INT_PHY_CHANGE), + + /* Host private flags (hp_flags) */ + VSC_SATA_HP_FLAG_MSI = (1 << 0), }; +struct vsc_sata_host_priv { + u32 hp_flags; +}; #define is_vsc_sata_int_err(port_idx, int_status) \ (int_status & (VSC_SATA_INT_ERROR << (8 * port_idx))) @@ -118,6 +124,20 @@ static void vsc_sata_scr_write (struct ata_port *ap, unsigned int sc_reg, } +static void vsc_sata_host_stop(struct ata_host_set *host_set) +{ + struct vsc_sata_host_priv *hpriv = host_set->private_data; + struct pci_dev *pdev = to_pci_dev(host_set->dev); + + if (hpriv->hp_flags & VSC_SATA_HP_FLAG_MSI) + pci_disable_msi(pdev); + else + pci_intx(pdev, 0); + kfree (hpriv); + ata_pci_host_stop(host_set); +} + + static void vsc_intr_mask_update(struct ata_port *ap, u8 ctl) { void __iomem *mask_addr; @@ -312,7 +332,7 @@ static const struct ata_port_operations vsc_sata_ops = { .scr_write = vsc_sata_scr_write, .port_start = ata_port_start, .port_stop = ata_port_stop, - .host_stop = ata_pci_host_stop, + .host_stop = vsc_sata_host_stop, }; static void __devinit vsc_sata_setup_port(struct ata_ioports *port, unsigned long base) @@ -341,6 +361,7 @@ static int __devinit vsc_sata_init_one (struct pci_dev *pdev, const struct pci_d { static int printed_version; struct ata_probe_ent *probe_ent = NULL; + struct vsc_sata_host_priv *hpriv; unsigned long base; int pci_dev_busy = 0; void __iomem *mmio_base; @@ -382,6 +403,7 @@ static int __devinit vsc_sata_init_one (struct pci_dev *pdev, const struct pci_d rc = -ENOMEM; goto err_out_regions; } + memset(probe_ent, 0, sizeof(*probe_ent)); probe_ent->dev = pci_dev_to_dev(pdev); INIT_LIST_HEAD(&probe_ent->node); @@ -393,19 +415,33 @@ static int __devinit vsc_sata_init_one (struct pci_dev *pdev, const struct pci_d } base = (unsigned long) mmio_base; + hpriv = kmalloc(sizeof(*hpriv), GFP_KERNEL); + if (!hpriv) { + rc = -ENOMEM; + goto err_out_iounmap; + } + memset(hpriv, 0, sizeof(*hpriv)); + /* * Due to a bug in the chip, the default cache line size can't be used */ pci_write_config_byte(pdev, PCI_CACHE_LINE_SIZE, 0x80); + if (pci_enable_msi(pdev) == 0) { + hpriv->hp_flags |= VSC_SATA_HP_FLAG_MSI; + pci_intx(pdev, 0); + } + else + probe_ent->irq_flags = IRQF_SHARED; + probe_ent->sht = &vsc_sata_sht; probe_ent->port_flags = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY | ATA_FLAG_MMIO; probe_ent->port_ops = &vsc_sata_ops; probe_ent->n_ports = 4; probe_ent->irq = pdev->irq; - probe_ent->irq_flags = IRQF_SHARED; probe_ent->mmio_base = mmio_base; + probe_ent->private_data = hpriv; /* We don't care much about the PIO/UDMA masks, but the core won't like us * if we don't fill these @@ -432,10 +468,12 @@ static int __devinit vsc_sata_init_one (struct pci_dev *pdev, const struct pci_d /* FIXME: check ata_device_add return value */ ata_device_add(probe_ent); - kfree(probe_ent); + kfree(probe_ent); return 0; +err_out_iounmap: + pci_iounmap(pdev, mmio_base); err_out_free_ent: kfree(probe_ent); err_out_regions: |