linux/arch/x86/pci/legacy.c

// SPDX-License-Identifier: GPL-2.0-only
/*
 * legacy.c - traditional, old school PCI bus probing
 */
#include <linux/init.h>
#include <linux/export.h>
#include <linux/pci.h>
#include <asm/jailhouse_para.h>
#include <asm/pci_x86.h>

/*
 * Discover remaining PCI buses in case there are peer host bridges.
 * We use the number of last PCI bus provided by the PCI BIOS.
 */
static void pcibios_fixup_peer_bridges(void)
{ … }

int __init pci_legacy_init(void)
{ … }

void pcibios_scan_specific_bus(int busn)
{ … }
EXPORT_SYMBOL_GPL(…);

static int __init pci_subsys_init(void)
{ … }
subsys_initcall(pci_subsys_init);