arch/x86/pci/init.c

#include <linux/pci.h>
#include <linux/init.h>
#include <asm/pci_x86.h>

/* arch_initcall has too random ordering, so call the initializers
   in the right sequence from here. */
static __init int pci_arch_init(void)
{
#ifdef CONFIG_PCI_DIRECT
	int type = 0;

	type = pci_direct_probe();
#endif

	pci_mmcfg_early_init();

#ifdef CONFIG_PCI_OLPC
	if (!pci_olpc_init())
		return 0;	/* skip additional checks if it's an XO */
#endif
#ifdef CONFIG_PCI_BIOS
	pci_pcbios_init();
#endif
	/*
	 * don't check for raw_pci_ops here because we want pcbios as last
	 * fallback, yet it's needed to run first to set pcibios_last_bus
	 * in case legacy PCI probing is used. otherwise detecting peer busses
	 * fails.
	 */
#ifdef CONFIG_PCI_DIRECT
	pci_direct_init(type);
#endif
	if (!raw_pci_ops && !raw_pci_ext_ops)
		printk(KERN_ERR
		"PCI: Fatal: No config space access function found\n");

	dmi_check_pciprobe();

	dmi_check_skip_isa_align();

	return 0;
}
arch_initcall(pci_arch_init);