arch/i386/pci/acpi.c

   1 #include <linux/pci.h>
   2 #include <linux/acpi.h>
   3 #include <linux/init.h>
   4 #include <linux/irq.h>
   5 #include <asm/hw_irq.h>
   6 #include "pci.h"
   7
   8 struct pci_bus * __devinit pci_acpi_scan_root(struct acpi_device *device, int domain, int busnum)
   9 {
  10         if (domain != 0) {
  11                 printk(KERN_WARNING "PCI: Multiple domains not supported\n");
  12                 return NULL;
  13         }
  14
  15         return pcibios_scan_root(busnum);
  16 }
  17
  18 static int __init pci_acpi_init(void)
  19 {
  20         struct pci_dev *dev = NULL;
  21
  22         if (pcibios_scanned)
  23                 return 0;
  24
  25         if (acpi_noirq)
  26                 return 0;
  27
  28         printk(KERN_INFO "PCI: Using ACPI for IRQ routing\n");
  29         acpi_irq_penalty_init();
  30         pcibios_scanned++;
  31         pcibios_enable_irq = acpi_pci_irq_enable;
  32
  33         /*
  34          * PCI IRQ routing is set up by pci_enable_device(), but we
  35          * also do it here in case there are still broken drivers that
  36          * don't use pci_enable_device().
  37          */
  38         while ((dev = pci_find_device(PCI_ANY_ID, PCI_ANY_ID, dev)) != NULL)
  39                 acpi_pci_irq_enable(dev);
  40
  41 #ifdef CONFIG_X86_IO_APIC
  42         if (acpi_ioapic)
  43                 print_IO_APIC();
  44 #endif
  45
  46         return 0;
  47 }
  48 subsys_initcall(pci_acpi_init);