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. */ |
10 | static __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 | } |
51 | arch_initcall(pci_arch_init); |
52 |