1// SPDX-License-Identifier: GPL-2.0
 2#include <linux/pci.h>
 3#include <linux/init.h>
 4#include <asm/pci_x86.h>
 5#include <asm/x86_init.h>
 
 6
 7/* arch_initcall has too random ordering, so call the initializers
 8   in the right sequence from here. */
 9static __init int pci_arch_init(void)
10{
11#ifdef CONFIG_PCI_DIRECT
12	int type = 0;
13
14	type = pci_direct_probe();
15#endif
16
17	if (!(pci_probe & PCI_PROBE_NOEARLY))
18		pci_mmcfg_early_init();
19
20	if (x86_init.pci.arch_init && !x86_init.pci.arch_init())
 
 
 
 
 
 
 
 
 
21		return 0;
22
23#ifdef CONFIG_PCI_BIOS
24	pci_pcbios_init();
25#endif
26	/*
27	 * don't check for raw_pci_ops here because we want pcbios as last
28	 * fallback, yet it's needed to run first to set pcibios_last_bus
29	 * in case legacy PCI probing is used. otherwise detecting peer busses
30	 * fails.
31	 */
32#ifdef CONFIG_PCI_DIRECT
33	pci_direct_init(type);
34#endif
35	if (!raw_pci_ops && !raw_pci_ext_ops)
36		printk(KERN_ERR
37		"PCI: Fatal: No config space access function found\n");
38
39	dmi_check_pciprobe();
40
41	dmi_check_skip_isa_align();
42
43	return 0;
44}
45arch_initcall(pci_arch_init);

 1// SPDX-License-Identifier: GPL-2.0
 2#include <linux/pci.h>
 3#include <linux/init.h>
 4#include <asm/pci_x86.h>
 5#include <asm/x86_init.h>
 6#include <asm/irqdomain.h>
 7
 8/* arch_initcall has too random ordering, so call the initializers
 9   in the right sequence from here. */
10static __init int pci_arch_init(void)
11{
12	int type, pcbios = 1;
 
13
14	type = pci_direct_probe();
 
15
16	if (!(pci_probe & PCI_PROBE_NOEARLY))
17		pci_mmcfg_early_init();
18
19	if (x86_init.pci.arch_init)
20		pcbios = x86_init.pci.arch_init();
21
22	/*
23	 * Must happen after x86_init.pci.arch_init(). Xen sets up the
24	 * x86_init.irqs.create_pci_msi_domain there.
25	 */
26	x86_create_pci_msi_domain();
27
28	if (!pcbios)
29		return 0;
30
 
31	pci_pcbios_init();
32
33	/*
34	 * don't check for raw_pci_ops here because we want pcbios as last
35	 * fallback, yet it's needed to run first to set pcibios_last_bus
36	 * in case legacy PCI probing is used. otherwise detecting peer busses
37	 * fails.
38	 */
 
39	pci_direct_init(type);
40
41	if (!raw_pci_ops && !raw_pci_ext_ops)
42		printk(KERN_ERR
43		"PCI: Fatal: No config space access function found\n");
44
45	dmi_check_pciprobe();
46
47	dmi_check_skip_isa_align();
48
49	return 0;
50}
51arch_initcall(pci_arch_init);