2 #include <linux/acpi.h>
3 #include <linux/init.h>
8 struct pci_bus * __devinit pci_acpi_scan_root(struct acpi_device *device, int domain, int busnum)
11 struct pci_sysdata *sd;
14 /* Allocate per-root-bus (not per bus) arch-specific data.
15 * TODO: leak; this memory is never freed.
16 * It's arguable whether it's worth the trouble to care.
18 sd = kzalloc(sizeof(*sd), GFP_KERNEL);
20 printk(KERN_ERR "PCI: OOM, not probing PCI bus %02x\n", busnum);
25 printk(KERN_WARNING "PCI: Multiple domains not supported\n");
32 pxm = acpi_get_pxm(device->handle);
33 #ifdef CONFIG_ACPI_NUMA
35 sd->node = pxm_to_node(pxm);
38 bus = pci_scan_bus_parented(NULL, busnum, &pci_root_ops, sd);
42 #ifdef CONFIG_ACPI_NUMA
45 printk("bus %d -> pxm %d -> node %d\n",
46 busnum, pxm, sd->node);
54 extern int pci_routeirq;
55 static int __init pci_acpi_init(void)
57 struct pci_dev *dev = NULL;
65 printk(KERN_INFO "PCI: Using ACPI for IRQ routing\n");
66 acpi_irq_penalty_init();
68 pcibios_enable_irq = acpi_pci_irq_enable;
69 pcibios_disable_irq = acpi_pci_irq_disable;
73 * PCI IRQ routing is set up by pci_enable_device(), but we
74 * also do it here in case there are still broken drivers that
75 * don't use pci_enable_device().
77 printk(KERN_INFO "PCI: Routing PCI interrupts for all devices because \"pci=routeirq\" specified\n");
79 acpi_pci_irq_enable(dev);
81 printk(KERN_INFO "PCI: If a device doesn't work, try \"pci=routeirq\". If it helps, post a report\n");
83 #ifdef CONFIG_X86_IO_APIC
90 subsys_initcall(pci_acpi_init);