diff options
Diffstat (limited to 'arch/x86/pci')
| -rw-r--r-- | arch/x86/pci/acpi.c | 11 | ||||
| -rw-r--r-- | arch/x86/pci/xen.c | 32 |
2 files changed, 37 insertions, 6 deletions
diff --git a/arch/x86/pci/acpi.c b/arch/x86/pci/acpi.c index 039d91315bc5..404f21a3ff9e 100644 --- a/arch/x86/pci/acpi.c +++ b/arch/x86/pci/acpi.c @@ -43,6 +43,17 @@ static const struct dmi_system_id pci_use_crs_table[] __initconst = { DMI_MATCH(DMI_PRODUCT_NAME, "ALiveSATA2-GLAN"), }, }, + /* https://bugzilla.kernel.org/show_bug.cgi?id=30552 */ + /* 2006 AMD HT/VIA system with two host bridges */ + { + .callback = set_use_crs, + .ident = "ASUS M2V-MX SE", + .matches = { + DMI_MATCH(DMI_BOARD_VENDOR, "ASUSTeK Computer INC."), + DMI_MATCH(DMI_BOARD_NAME, "M2V-MX SE"), + DMI_MATCH(DMI_BIOS_VENDOR, "American Megatrends Inc."), + }, + }, {} }; diff --git a/arch/x86/pci/xen.c b/arch/x86/pci/xen.c index 1017c7bee388..492ade8c978e 100644 --- a/arch/x86/pci/xen.c +++ b/arch/x86/pci/xen.c @@ -175,8 +175,10 @@ static int xen_setup_msi_irqs(struct pci_dev *dev, int nvec, int type) "pcifront-msi-x" : "pcifront-msi", DOMID_SELF); - if (irq < 0) + if (irq < 0) { + ret = irq; goto free; + } i++; } kfree(v); @@ -221,8 +223,10 @@ static int xen_hvm_setup_msi_irqs(struct pci_dev *dev, int nvec, int type) if (msg.data != XEN_PIRQ_MSI_DATA || xen_irq_from_pirq(pirq) < 0) { pirq = xen_allocate_pirq_msi(dev, msidesc); - if (pirq < 0) + if (pirq < 0) { + irq = -ENODEV; goto error; + } xen_msi_compose_msg(dev, pirq, &msg); __write_msi_msg(msidesc, &msg); dev_dbg(&dev->dev, "xen: msi bound to pirq=%d\n", pirq); @@ -244,10 +248,12 @@ static int xen_hvm_setup_msi_irqs(struct pci_dev *dev, int nvec, int type) error: dev_err(&dev->dev, "Xen PCI frontend has not registered MSI/MSI-X support!\n"); - return -ENODEV; + return irq; } #ifdef CONFIG_XEN_DOM0 +static bool __read_mostly pci_seg_supported = true; + static int xen_initdom_setup_msi_irqs(struct pci_dev *dev, int nvec, int type) { int ret = 0; @@ -265,10 +271,11 @@ static int xen_initdom_setup_msi_irqs(struct pci_dev *dev, int nvec, int type) memset(&map_irq, 0, sizeof(map_irq)); map_irq.domid = domid; - map_irq.type = MAP_PIRQ_TYPE_MSI; + map_irq.type = MAP_PIRQ_TYPE_MSI_SEG; map_irq.index = -1; map_irq.pirq = -1; - map_irq.bus = dev->bus->number; + map_irq.bus = dev->bus->number | + (pci_domain_nr(dev->bus) << 16); map_irq.devfn = dev->devfn; if (type == PCI_CAP_ID_MSIX) { @@ -285,7 +292,20 @@ static int xen_initdom_setup_msi_irqs(struct pci_dev *dev, int nvec, int type) map_irq.entry_nr = msidesc->msi_attrib.entry_nr; } - ret = HYPERVISOR_physdev_op(PHYSDEVOP_map_pirq, &map_irq); + ret = -EINVAL; + if (pci_seg_supported) + ret = HYPERVISOR_physdev_op(PHYSDEVOP_map_pirq, + &map_irq); + if (ret == -EINVAL && !pci_domain_nr(dev->bus)) { + map_irq.type = MAP_PIRQ_TYPE_MSI; + map_irq.index = -1; + map_irq.pirq = -1; + map_irq.bus = dev->bus->number; + ret = HYPERVISOR_physdev_op(PHYSDEVOP_map_pirq, + &map_irq); + if (ret != -EINVAL) + pci_seg_supported = false; + } if (ret) { dev_warn(&dev->dev, "xen map irq failed %d for %d domain\n", ret, domid); |