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. */ 9 static __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 } 45 arch_initcall(pci_arch_init); 46