Linux/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);
 38 

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