diff options
Diffstat (limited to 'arch/sparc64/kernel/pci.c')
| -rw-r--r-- | arch/sparc64/kernel/pci.c | 77 |
1 files changed, 64 insertions, 13 deletions
diff --git a/arch/sparc64/kernel/pci.c b/arch/sparc64/kernel/pci.c index 3bc136a50404..e8dac81d8a0d 100644 --- a/arch/sparc64/kernel/pci.c +++ b/arch/sparc64/kernel/pci.c @@ -283,12 +283,6 @@ int __init pcic_present(void) return pci_controller_scan(pci_is_controller); } -const struct pci_iommu_ops *pci_iommu_ops; -EXPORT_SYMBOL(pci_iommu_ops); - -extern const struct pci_iommu_ops pci_sun4u_iommu_ops, - pci_sun4v_iommu_ops; - /* Find each controller in the system, attach and initialize * software state structure for each and link into the * pci_pbm_root. Setup the controller enough such @@ -296,11 +290,6 @@ extern const struct pci_iommu_ops pci_sun4u_iommu_ops, */ static void __init pci_controller_probe(void) { - if (tlb_type == hypervisor) - pci_iommu_ops = &pci_sun4v_iommu_ops; - else - pci_iommu_ops = &pci_sun4u_iommu_ops; - printk("PCI: Probing for controllers.\n"); pci_controller_scan(pci_controller_init); @@ -404,7 +393,10 @@ struct pci_dev *of_create_pci_dev(struct pci_pbm_info *pbm, sd->host_controller = pbm; sd->prom_node = node; sd->op = of_find_device_by_node(node); - sd->msi_num = 0xffffffff; + + sd = &sd->op->dev.archdata; + sd->iommu = pbm->iommu; + sd->stc = &pbm->stc; type = of_get_property(node, "device_type", NULL); if (type == NULL) @@ -453,6 +445,7 @@ struct pci_dev *of_create_pci_dev(struct pci_pbm_info *pbm, */ pci_read_config_dword(dev, PCI_CLASS_REVISION, &class); dev->class = class >> 8; + dev->revision = class & 0xff; sprintf(pci_name(dev), "%04x:%02x:%02x.%d", pci_domain_nr(bus), dev->bus->number, PCI_SLOT(devfn), PCI_FUNC(devfn)); @@ -751,7 +744,7 @@ static void __devinit pci_of_scan_bus(struct pci_pbm_info *pbm, { struct device_node *child; const u32 *reg; - int reglen, devfn; + int reglen, devfn, prev_devfn; struct pci_dev *dev; if (ofpci_verbose) @@ -759,14 +752,25 @@ static void __devinit pci_of_scan_bus(struct pci_pbm_info *pbm, node->full_name, bus->number); child = NULL; + prev_devfn = -1; while ((child = of_get_next_child(node, child)) != NULL) { if (ofpci_verbose) printk(" * %s\n", child->full_name); reg = of_get_property(child, "reg", ®len); if (reg == NULL || reglen < 20) continue; + devfn = (reg[0] >> 8) & 0xff; + /* This is a workaround for some device trees + * which list PCI devices twice. On the V100 + * for example, device number 3 is listed twice. + * Once as "pm" and once again as "lomp". + */ + if (devfn == prev_devfn) + continue; + prev_devfn = devfn; + /* create a new pci_dev for this device */ dev = of_create_pci_dev(pbm, child, bus, devfn, 0); if (!dev) @@ -1225,4 +1229,51 @@ struct device_node *pci_device_to_OF_node(struct pci_dev *pdev) } EXPORT_SYMBOL(pci_device_to_OF_node); +static void ali_sound_dma_hack(struct pci_dev *pdev, int set_bit) +{ + struct pci_dev *ali_isa_bridge; + u8 val; + + /* ALI sound chips generate 31-bits of DMA, a special register + * determines what bit 31 is emitted as. + */ + ali_isa_bridge = pci_get_device(PCI_VENDOR_ID_AL, + PCI_DEVICE_ID_AL_M1533, + NULL); + + pci_read_config_byte(ali_isa_bridge, 0x7e, &val); + if (set_bit) + val |= 0x01; + else + val &= ~0x01; + pci_write_config_byte(ali_isa_bridge, 0x7e, val); + pci_dev_put(ali_isa_bridge); +} + +int pci_dma_supported(struct pci_dev *pdev, u64 device_mask) +{ + u64 dma_addr_mask; + + if (pdev == NULL) { + dma_addr_mask = 0xffffffff; + } else { + struct iommu *iommu = pdev->dev.archdata.iommu; + + dma_addr_mask = iommu->dma_addr_mask; + + if (pdev->vendor == PCI_VENDOR_ID_AL && + pdev->device == PCI_DEVICE_ID_AL_M5451 && + device_mask == 0x7fffffff) { + ali_sound_dma_hack(pdev, + (dma_addr_mask & 0x80000000) != 0); + return 1; + } + } + + if (device_mask >= (1UL << 32UL)) + return 0; + + return (device_mask & dma_addr_mask) == dma_addr_mask; +} + #endif /* !(CONFIG_PCI) */ |