diff options
Diffstat (limited to 'arch/x86')
-rw-r--r-- | arch/x86/include/asm/pci.h | 1 | ||||
-rw-r--r-- | arch/x86/include/asm/pci_x86.h | 2 | ||||
-rw-r--r-- | arch/x86/pci/acpi.c | 35 | ||||
-rw-r--r-- | arch/x86/pci/amd_bus.c | 2 | ||||
-rw-r--r-- | arch/x86/pci/common.c | 4 |
5 files changed, 33 insertions, 11 deletions
diff --git a/arch/x86/include/asm/pci.h b/arch/x86/include/asm/pci.h index b51a1e8b0ba..927958d13c1 100644 --- a/arch/x86/include/asm/pci.h +++ b/arch/x86/include/asm/pci.h @@ -130,6 +130,7 @@ extern void pci_iommu_alloc(void); /* generic pci stuff */ #include <asm-generic/pci.h> +#define PCIBIOS_MAX_MEM_32 0xffffffff #ifdef CONFIG_NUMA /* Returns the node based on pci bus */ diff --git a/arch/x86/include/asm/pci_x86.h b/arch/x86/include/asm/pci_x86.h index e60fd3e14bd..cb739cc0a08 100644 --- a/arch/x86/include/asm/pci_x86.h +++ b/arch/x86/include/asm/pci_x86.h @@ -25,7 +25,7 @@ #define PCI_BIOS_IRQ_SCAN 0x2000 #define PCI_ASSIGN_ALL_BUSSES 0x4000 #define PCI_CAN_SKIP_ISA_ALIGN 0x8000 -#define PCI_USE__CRS 0x10000 +#define PCI_NO_ROOT_CRS 0x10000 #define PCI_CHECK_ENABLE_AMD_MMCONF 0x20000 #define PCI_HAS_IO_ECS 0x40000 #define PCI_NOASSIGN_ROMS 0x80000 diff --git a/arch/x86/pci/acpi.c b/arch/x86/pci/acpi.c index c0ecf250fe5..16c3fda85bb 100644 --- a/arch/x86/pci/acpi.c +++ b/arch/x86/pci/acpi.c @@ -38,15 +38,26 @@ count_resource(struct acpi_resource *acpi_res, void *data) struct acpi_resource_address64 addr; acpi_status status; - if (info->res_num >= PCI_BUS_NUM_RESOURCES) - return AE_OK; - status = resource_to_addr(acpi_res, &addr); if (ACPI_SUCCESS(status)) info->res_num++; return AE_OK; } +static int +bus_has_transparent_bridge(struct pci_bus *bus) +{ + struct pci_dev *dev; + + list_for_each_entry(dev, &bus->devices, bus_list) { + u16 class = dev->class >> 8; + + if (class == PCI_CLASS_BRIDGE_PCI && dev->transparent) + return true; + } + return false; +} + static acpi_status setup_resource(struct acpi_resource *acpi_res, void *data) { @@ -56,9 +67,7 @@ setup_resource(struct acpi_resource *acpi_res, void *data) acpi_status status; unsigned long flags; struct resource *root; - - if (info->res_num >= PCI_BUS_NUM_RESOURCES) - return AE_OK; + int max_root_bus_resources = PCI_BUS_NUM_RESOURCES; status = resource_to_addr(acpi_res, &addr); if (!ACPI_SUCCESS(status)) @@ -82,6 +91,18 @@ setup_resource(struct acpi_resource *acpi_res, void *data) res->end = res->start + addr.address_length - 1; res->child = NULL; + if (bus_has_transparent_bridge(info->bus)) + max_root_bus_resources -= 3; + if (info->res_num >= max_root_bus_resources) { + printk(KERN_WARNING "PCI: Failed to allocate 0x%lx-0x%lx " + "from %s for %s due to _CRS returning more than " + "%d resource descriptors\n", (unsigned long) res->start, + (unsigned long) res->end, root->name, info->name, + max_root_bus_resources); + info->res_num++; + return AE_OK; + } + if (insert_resource(root, res)) { printk(KERN_ERR "PCI: Failed to allocate 0x%lx-0x%lx " "from %s for %s\n", (unsigned long) res->start, @@ -217,7 +238,7 @@ struct pci_bus * __devinit pci_acpi_scan_root(struct acpi_device *device, int do #endif } - if (bus && (pci_probe & PCI_USE__CRS)) + if (bus && !(pci_probe & PCI_NO_ROOT_CRS)) get_current_resources(device, busnum, domain, bus); return bus; } diff --git a/arch/x86/pci/amd_bus.c b/arch/x86/pci/amd_bus.c index f893d6a6e80..2255f880678 100644 --- a/arch/x86/pci/amd_bus.c +++ b/arch/x86/pci/amd_bus.c @@ -101,7 +101,7 @@ void x86_pci_root_bus_res_quirks(struct pci_bus *b) struct pci_root_info *info; /* don't go for it if _CRS is used */ - if (pci_probe & PCI_USE__CRS) + if (!(pci_probe & PCI_NO_ROOT_CRS)) return; /* if only one root bus, don't need to anything */ diff --git a/arch/x86/pci/common.c b/arch/x86/pci/common.c index 2202b6257b8..4740119e4bb 100644 --- a/arch/x86/pci/common.c +++ b/arch/x86/pci/common.c @@ -515,8 +515,8 @@ char * __devinit pcibios_setup(char *str) } else if (!strcmp(str, "assign-busses")) { pci_probe |= PCI_ASSIGN_ALL_BUSSES; return NULL; - } else if (!strcmp(str, "use_crs")) { - pci_probe |= PCI_USE__CRS; + } else if (!strcmp(str, "nocrs")) { + pci_probe |= PCI_NO_ROOT_CRS; return NULL; } else if (!strcmp(str, "earlydump")) { pci_early_dump_regs = 1; |