/* arch_initcall has too random ordering, so call the initializers
in the right sequence from here. */
static __init int pci_access_init(void)
{
int type = 0;
#ifdef CONFIG_PCI_DIRECT
type = pci_direct_probe();
#endif
#ifdef CONFIG_PCI_MMCONFIG
pci_mmcfg_init(type);
#endif
if (raw_pci_ops)
return 0;
#ifdef CONFIG_PCI_BIOS
pci_pcbios_init();
#endif
/*
* don't check for raw_pci_ops here because we want pcbios as last
* fallback, yet it's needed to run first to set pcibios_last_bus
* in case legacy PCI probing is used. otherwise detecting peer busses
* fails.
*/
#ifdef CONFIG_PCI_DIRECT
pci_direct_init(type);
#endif
if (!raw_pci_ops)
printk(KERN_ERR
"PCI: Fatal: No config space access function found\n");
return 0;
}
/* arch_initcall has too random ordering, so call the initializers
in the right sequence from here. */
static __init int pci_access_init(void)
{
#ifdef CONFIG_PCI_MMCONFIG
pci_mmcfg_init();
#endif
if (raw_pci_ops)
return 0;
#ifdef CONFIG_PCI_BIOS
pci_pcbios_init();
#endif
if (raw_pci_ops)
return 0;
#ifdef CONFIG_PCI_DIRECT
pci_direct_init();
#endif
return 0;
}
/**ltl
功能:初始化PCI设备配置的访问方式
*/
static __init int pci_access_init(void)
{
#ifdef CONFIG_PCI_MMCONFIG
pci_mmcfg_init();/*初始化增强配置访问方式*/
#endif
if (raw_pci_ops)
return 0;
#ifdef CONFIG_PCI_BIOS
pci_pcbios_init();/* 利用bios接口提供API来访问配置 */
#endif
/*
* don't check for raw_pci_ops here because we want pcbios as last
* fallback, yet it's needed to run first to set pcibios_last_bus
* in case legacy PCI probing is used. otherwise detecting peer busses
* fails.
*/
#ifdef CONFIG_PCI_DIRECT
pci_direct_init();/* 利用config1或者config2访问 */
#endif
return 0;
}
/* arch_initcall has too random ordering, so call the initializers
in the right sequence from here. */
static __init int pci_access_init(void)
{
#ifdef CONFIG_PCI_MMCONFIG
pci_mmcfg_init();
#endif
dmi_check_pciprobe();
if (raw_pci_ops)
return 0;
#ifdef CONFIG_PCI_BIOS
pci_pcbios_init();
#endif
/*
* don't check for raw_pci_ops here because we want pcbios as last
* fallback, yet it's needed to run first to set pcibios_last_bus
* in case legacy PCI probing is used. otherwise detecting peer busses
* fails.
*/
#ifdef CONFIG_PCI_DIRECT
pci_direct_init();
#endif
return 0;
}
