diff options
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/x86/include/asm/pci_x86.h | 2 | ||||
| -rw-r--r-- | arch/x86/pci/legacy.c | 42 |
2 files changed, 27 insertions, 17 deletions
diff --git a/arch/x86/include/asm/pci_x86.h b/arch/x86/include/asm/pci_x86.h index 1a0422348d6d..ff5404b82fdc 100644 --- a/arch/x86/include/asm/pci_x86.h +++ b/arch/x86/include/asm/pci_x86.h @@ -53,6 +53,8 @@ extern int pcibios_last_bus; extern struct pci_bus *pci_root_bus; extern struct pci_ops pci_root_ops; +void pcibios_scan_specific_bus(int busn); + /* pci-irq.c */ struct irq_info { diff --git a/arch/x86/pci/legacy.c b/arch/x86/pci/legacy.c index 0db5eaf54560..c734c277b116 100644 --- a/arch/x86/pci/legacy.c +++ b/arch/x86/pci/legacy.c @@ -11,28 +11,14 @@ */ static void __devinit pcibios_fixup_peer_bridges(void) { - int n, devfn; - long node; + int n; if (pcibios_last_bus <= 0 || pcibios_last_bus > 0xff) return; DBG("PCI: Peer bridge fixup\n"); - for (n=0; n <= pcibios_last_bus; n++) { - u32 l; - if (pci_find_bus(0, n)) - continue; - node = get_mp_bus_to_node(n); - for (devfn = 0; devfn < 256; devfn += 8) { - if (!raw_pci_read(0, n, devfn, PCI_VENDOR_ID, 2, &l) && - l != 0x0000 && l != 0xffff) { - DBG("Found device at %02x:%02x [%04x]\n", n, devfn, l); - printk(KERN_INFO "PCI: Discovered peer bus %02x\n", n); - pci_scan_bus_on_node(n, &pci_root_ops, node); - break; - } - } - } + for (n=0; n <= pcibios_last_bus; n++) + pcibios_scan_specific_bus(n); } int __init pci_legacy_init(void) @@ -49,6 +35,28 @@ int __init pci_legacy_init(void) return 0; } +EXPORT_SYMBOL_GPL(pci_legacy_init); + +void pcibios_scan_specific_bus(int busn) +{ + int devfn; + long node; + u32 l; + + if (pci_find_bus(0, busn)) + return; + + node = get_mp_bus_to_node(busn); + for (devfn = 0; devfn < 256; devfn += 8) { + if (!raw_pci_read(0, busn, devfn, PCI_VENDOR_ID, 2, &l) && + l != 0x0000 && l != 0xffff) { + DBG("Found device at %02x:%02x [%04x]\n", busn, devfn, l); + printk(KERN_INFO "PCI: Discovered peer bus %02x\n", busn); + pci_scan_bus_on_node(busn, &pci_root_ops, node); + return; + } + } +} int __init pci_subsys_init(void) { |