xref: /openbmc/linux/arch/x86/pci/init.c (revision 9ac8d3fb)
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_arch_init(void)
8 {
9 #ifdef CONFIG_PCI_DIRECT
10 	int type = 0;
11 
12 	type = pci_direct_probe();
13 #endif
14 
15 	pci_mmcfg_early_init();
16 
17 #ifdef CONFIG_PCI_OLPC
18 	if (!pci_olpc_init())
19 		return 0;	/* skip additional checks if it's an XO */
20 #endif
21 #ifdef CONFIG_PCI_BIOS
22 	pci_pcbios_init();
23 #endif
24 	/*
25 	 * don't check for raw_pci_ops here because we want pcbios as last
26 	 * fallback, yet it's needed to run first to set pcibios_last_bus
27 	 * in case legacy PCI probing is used. otherwise detecting peer busses
28 	 * fails.
29 	 */
30 #ifdef CONFIG_PCI_DIRECT
31 	pci_direct_init(type);
32 #endif
33 	if (!raw_pci_ops && !raw_pci_ext_ops)
34 		printk(KERN_ERR
35 		"PCI: Fatal: No config space access function found\n");
36 
37 	dmi_check_pciprobe();
38 
39 	dmi_check_skip_isa_align();
40 
41 	return 0;
42 }
43 arch_initcall(pci_arch_init);
44