diff options
Diffstat (limited to 'arch/x86/pci')
| -rw-r--r-- | arch/x86/pci/k8-bus_64.c | 84 |
1 files changed, 82 insertions, 2 deletions
diff --git a/arch/x86/pci/k8-bus_64.c b/arch/x86/pci/k8-bus_64.c index 5e8a9d105ed..84b2030fc2f 100644 --- a/arch/x86/pci/k8-bus_64.c +++ b/arch/x86/pci/k8-bus_64.c @@ -191,6 +191,34 @@ static struct pci_hostbridge_probe pci_probes[] __initdata = { { 0, 0x18, PCI_VENDOR_ID_AMD, 0x1300 }, }; +static u64 __initdata fam10h_mmconf_start; +static u64 __initdata fam10h_mmconf_end; +static void __init get_pci_mmcfg_amd_fam10h_range(void) +{ + u32 address; + u64 base, msr; + unsigned segn_busn_bits; + + /* assume all cpus from fam10h have mmconf */ + if (boot_cpu_data.x86 < 0x10) + return; + + address = MSR_FAM10H_MMIO_CONF_BASE; + rdmsrl(address, msr); + + /* mmconfig is not enable */ + if (!(msr & FAM10H_MMIO_CONF_ENABLE)) + return; + + base = msr & (FAM10H_MMIO_CONF_BASE_MASK<<FAM10H_MMIO_CONF_BASE_SHIFT); + + segn_busn_bits = (msr >> FAM10H_MMIO_CONF_BUSRANGE_SHIFT) & + FAM10H_MMIO_CONF_BUSRANGE_MASK; + + fam10h_mmconf_start = base; + fam10h_mmconf_end = base + (1ULL<<(segn_busn_bits + 20)) - 1; +} + /** * early_fill_mp_bus_to_node() * called before pcibios_scan_root and pci_scan_bus @@ -305,6 +333,8 @@ static int __init early_fill_mp_bus_info(void) continue; /* not found */ info = &pci_root_info[j]; + printk(KERN_DEBUG "node %d link %d: io port [%llx, %llx]\n", + node, link, (u64)start, (u64)end); update_res(info, start, end, IORESOURCE_IO, 0); update_range(range, start, end); } @@ -328,8 +358,7 @@ static int __init early_fill_mp_bus_info(void) memset(range, 0, sizeof(range)); /* 0xfd00000000-0xffffffffff for HT */ - /* 0xfc00000000-0xfcffffffff for Family 10h mmconfig*/ - range[0].end = 0xfbffffffffULL; + range[0].end = (0xfdULL<<32) - 1; /* need to take out [0, TOM) for RAM*/ address = MSR_K8_TOP_MEM1; @@ -339,6 +368,14 @@ static int __init early_fill_mp_bus_info(void) if (end < (1ULL<<32)) update_range(range, 0, end - 1); + /* get mmconfig */ + get_pci_mmcfg_amd_fam10h_range(); + /* need to take out mmconf range */ + if (fam10h_mmconf_end) { + printk(KERN_DEBUG "Fam 10h mmconf [%llx, %llx]\n", fam10h_mmconf_start, fam10h_mmconf_end); + update_range(range, fam10h_mmconf_start, fam10h_mmconf_end); + } + /* mmio resource */ for (i = 0; i < 8; i++) { reg = read_pci_config(bus, slot, 1, 0x80 + (i << 3)); @@ -364,8 +401,51 @@ static int __init early_fill_mp_bus_info(void) continue; /* not found */ info = &pci_root_info[j]; + + printk(KERN_DEBUG "node %d link %d: mmio [%llx, %llx]", + node, link, (u64)start, (u64)end); + /* + * some sick allocation would have range overlap with fam10h + * mmconf range, so need to update start and end. + */ + if (fam10h_mmconf_end) { + int changed = 0; + u64 endx = 0; + if (start >= fam10h_mmconf_start && + start <= fam10h_mmconf_end) { + start = fam10h_mmconf_end + 1; + changed = 1; + } + + if (end >= fam10h_mmconf_start && + end <= fam10h_mmconf_end) { + end = fam10h_mmconf_start - 1; + changed = 1; + } + + if (start < fam10h_mmconf_start && + end > fam10h_mmconf_end) { + /* we got a hole */ + endx = fam10h_mmconf_start - 1; + update_res(info, start, endx, IORESOURCE_MEM, 0); + update_range(range, start, endx); + printk(KERN_CONT " ==> [%llx, %llx]", (u64)start, endx); + start = fam10h_mmconf_end + 1; + changed = 1; + } + if (changed) { + if (start <= end) { + printk(KERN_CONT " %s [%llx, %llx]", endx?"and":"==>", (u64)start, (u64)end); + } else { + printk(KERN_CONT "%s\n", endx?"":" ==> none"); + continue; + } + } + } + update_res(info, start, end, IORESOURCE_MEM, 0); update_range(range, start, end); + printk(KERN_CONT "\n"); } /* need to take out [4G, TOM2) for RAM*/ |