diff options
Diffstat (limited to 'arch/x86')
| -rw-r--r-- | arch/x86/pci/irq.c | 2 | ||||
| -rw-r--r-- | arch/x86/pci/legacy.c | 2 | ||||
| -rw-r--r-- | arch/x86/pci/mmconfig-shared.c | 65 |
3 files changed, 51 insertions, 18 deletions
diff --git a/arch/x86/pci/irq.c b/arch/x86/pci/irq.c index fec0123b33a9..8e077185e185 100644 --- a/arch/x86/pci/irq.c +++ b/arch/x86/pci/irq.c @@ -590,6 +590,8 @@ static __init int intel_router_probe(struct irq_router *r, struct pci_dev *route case PCI_DEVICE_ID_INTEL_ICH10_1: case PCI_DEVICE_ID_INTEL_ICH10_2: case PCI_DEVICE_ID_INTEL_ICH10_3: + case PCI_DEVICE_ID_INTEL_PCH_0: + case PCI_DEVICE_ID_INTEL_PCH_1: r->name = "PIIX/ICH"; r->get = pirq_piix_get; r->set = pirq_piix_set; diff --git a/arch/x86/pci/legacy.c b/arch/x86/pci/legacy.c index ec9ce35e44d6..b722dd481b39 100644 --- a/arch/x86/pci/legacy.c +++ b/arch/x86/pci/legacy.c @@ -14,7 +14,7 @@ static void __devinit pcibios_fixup_peer_bridges(void) int n, devfn; long node; - if (pcibios_last_bus <= 0 || pcibios_last_bus >= 0xff) + if (pcibios_last_bus <= 0 || pcibios_last_bus > 0xff) return; DBG("PCI: Peer bridge fixup\n"); diff --git a/arch/x86/pci/mmconfig-shared.c b/arch/x86/pci/mmconfig-shared.c index 2bd5c53f6386..d9635764ce3d 100644 --- a/arch/x86/pci/mmconfig-shared.c +++ b/arch/x86/pci/mmconfig-shared.c @@ -293,7 +293,7 @@ static acpi_status __init find_mboard_resource(acpi_handle handle, u32 lvl, return AE_OK; } -static int __init is_acpi_reserved(unsigned long start, unsigned long end) +static int __init is_acpi_reserved(u64 start, u64 end, unsigned not_used) { struct resource mcfg_res; @@ -310,6 +310,41 @@ static int __init is_acpi_reserved(unsigned long start, unsigned long end) return mcfg_res.flags; } +typedef int (*check_reserved_t)(u64 start, u64 end, unsigned type); + +static int __init is_mmconf_reserved(check_reserved_t is_reserved, + u64 addr, u64 size, int i, + typeof(pci_mmcfg_config[0]) *cfg, int with_e820) +{ + u64 old_size = size; + int valid = 0; + + while (!is_reserved(addr, addr + size - 1, E820_RESERVED)) { + size >>= 1; + if (size < (16UL<<20)) + break; + } + + if (size >= (16UL<<20) || size == old_size) { + printk(KERN_NOTICE + "PCI: MCFG area at %Lx reserved in %s\n", + addr, with_e820?"E820":"ACPI motherboard resources"); + valid = 1; + + if (old_size != size) { + /* update end_bus_number */ + cfg->end_bus_number = cfg->start_bus_number + ((size>>20) - 1); + printk(KERN_NOTICE "PCI: updated MCFG configuration %d: base %lx " + "segment %hu buses %u - %u\n", + i, (unsigned long)cfg->address, cfg->pci_segment, + (unsigned int)cfg->start_bus_number, + (unsigned int)cfg->end_bus_number); + } + } + + return valid; +} + static void __init pci_mmcfg_reject_broken(int early) { typeof(pci_mmcfg_config[0]) *cfg; @@ -324,21 +359,22 @@ static void __init pci_mmcfg_reject_broken(int early) for (i = 0; i < pci_mmcfg_config_num; i++) { int valid = 0; - u32 size = (cfg->end_bus_number + 1) << 20; + u64 addr, size; + cfg = &pci_mmcfg_config[i]; + addr = cfg->start_bus_number; + addr <<= 20; + addr += cfg->address; + size = cfg->end_bus_number + 1 - cfg->start_bus_number; + size <<= 20; printk(KERN_NOTICE "PCI: MCFG configuration %d: base %lx " "segment %hu buses %u - %u\n", i, (unsigned long)cfg->address, cfg->pci_segment, (unsigned int)cfg->start_bus_number, (unsigned int)cfg->end_bus_number); - if (!early && - is_acpi_reserved(cfg->address, cfg->address + size - 1)) { - printk(KERN_NOTICE "PCI: MCFG area at %Lx reserved " - "in ACPI motherboard resources\n", - cfg->address); - valid = 1; - } + if (!early) + valid = is_mmconf_reserved(is_acpi_reserved, addr, size, i, cfg, 0); if (valid) continue; @@ -347,16 +383,11 @@ static void __init pci_mmcfg_reject_broken(int early) printk(KERN_ERR "PCI: BIOS Bug: MCFG area at %Lx is not" " reserved in ACPI motherboard resources\n", cfg->address); + /* Don't try to do this check unless configuration type 1 is available. how about type 2 ?*/ - if (raw_pci_ops && e820_all_mapped(cfg->address, - cfg->address + size - 1, - E820_RESERVED)) { - printk(KERN_NOTICE - "PCI: MCFG area at %Lx reserved in E820\n", - cfg->address); - valid = 1; - } + if (raw_pci_ops) + valid = is_mmconf_reserved(e820_all_mapped, addr, size, i, cfg, 1); if (!valid) goto reject; |