xref: /openbmc/linux/arch/x86/pci/init.c (revision 3d3337de)
1 #include <linux/pci.h>
2 #include <linux/init.h>
3 #include <asm/pci_x86.h>
4 #include <asm/x86_init.h>
5 
6 /* arch_initcall has too random ordering, so call the initializers
7    in the right sequence from here. */
8 static __init int pci_arch_init(void)
9 {
10 #ifdef CONFIG_PCI_DIRECT
11 	int type = 0;
12 
13 	type = pci_direct_probe();
14 #endif
15 
16 	if (!(pci_probe & PCI_PROBE_NOEARLY))
17 		pci_mmcfg_early_init();
18 
19 	if (x86_init.pci.arch_init && !x86_init.pci.arch_init())
20 		return 0;
21 
22 #ifdef CONFIG_PCI_BIOS
23 	pci_pcbios_init();
24 #endif
25 	/*
26 	 * don't check for raw_pci_ops here because we want pcbios as last
27 	 * fallback, yet it's needed to run first to set pcibios_last_bus
28 	 * in case legacy PCI probing is used. otherwise detecting peer busses
29 	 * fails.
30 	 */
31 #ifdef CONFIG_PCI_DIRECT
32 	pci_direct_init(type);
33 #endif
34 	if (!raw_pci_ops && !raw_pci_ext_ops)
35 		printk(KERN_ERR
36 		"PCI: Fatal: No config space access function found\n");
37 
38 	dmi_check_pciprobe();
39 
40 	dmi_check_skip_isa_align();
41 
42 	return 0;
43 }
44 arch_initcall(pci_arch_init);
45