arch/x86/pci/init.c

   1 #include <linux/pci.h>
   2 #include <linux/init.h>
   3 #include "pci.h"
   4
   5 /* arch_initcall has too random ordering, so call the initializers
   6    in the right sequence from here. */
   7 static __init int pci_access_init(void)
   8 {
   9         int type __maybe_unused = 0;
  10
  11 #ifdef CONFIG_PCI_DIRECT
  12         type = pci_direct_probe();
  13 #endif
  14 #ifdef CONFIG_PCI_MMCONFIG
  15         pci_mmcfg_init(type);
  16 #endif
  17         if (raw_pci_ops)
  18                 return 0;
  19 #ifdef CONFIG_PCI_BIOS
  20         pci_pcbios_init();
  21 #endif
  22         /*
  23          * don't check for raw_pci_ops here because we want pcbios as last
  24          * fallback, yet it's needed to run first to set pcibios_last_bus
  25          * in case legacy PCI probing is used. otherwise detecting peer busses
  26          * fails.
  27          */
  28 #ifdef CONFIG_PCI_DIRECT
  29         pci_direct_init(type);
  30 #endif
  31         if (!raw_pci_ops)
  32                 printk(KERN_ERR
  33                 "PCI: Fatal: No config space access function found\n");
  34
  35         return 0;
  36 }
  37 arch_initcall(pci_access_init);