291 	pcibios_bus_to_resource(dev->bus, res, &region);  in __pci_read_base()
292 	pcibios_resource_to_bus(dev->bus, &inverted_region, res);  in __pci_read_base()
437 		pcibios_bus_to_resource(dev->bus, res, &region);  in pci_read_bridge_io()
459 		pcibios_bus_to_resource(dev->bus, res, &region);  in pci_read_bridge_mmio()
512 		pcibios_bus_to_resource(dev->bus, res, &region);  in pci_read_bridge_mmio_pref()
683 void pcie_update_link_speed(struct pci_bus *bus, u16 linksta)  in pcie_update_link_speed()  argument
685 	bus->cur_bus_speed = pcie_link_speed[linksta & PCI_EXP_LNKSTA_CLS];  in pcie_update_link_speed()
720 static void pci_set_bus_speed(struct pci_bus *bus)  in pci_set_bus_speed()  argument
722 	struct pci_dev *bridge = bus->self;  in pci_set_bus_speed()
732 		bus->max_bus_speed = agp_speed(agpstat & 8, agpstat & 7);  in pci_set_bus_speed()
735 		bus->cur_bus_speed = agp_speed(agpstat & 8, agpcmd & 7);  in pci_set_bus_speed()
759 		bus->max_bus_speed = max;  in pci_set_bus_speed()
760 		bus->cur_bus_speed = pcix_bus_speed[  in pci_set_bus_speed()
771 		bus->max_bus_speed = pcie_link_speed[linkcap & PCI_EXP_LNKCAP_SLS];  in pci_set_bus_speed()
774 		pcie_update_link_speed(bus, linksta);  in pci_set_bus_speed()
778 static struct irq_domain *pci_host_bridge_msi_domain(struct pci_bus *bus)  in pci_host_bridge_msi_domain()  argument
786 	d = pci_host_bridge_of_msi_domain(bus);  in pci_host_bridge_msi_domain()
788 		d = pci_host_bridge_acpi_msi_domain(bus);  in pci_host_bridge_msi_domain()
796 		struct fwnode_handle *fwnode = pci_root_bus_fwnode(bus);  in pci_host_bridge_msi_domain()
807 static void pci_set_bus_msi_domain(struct pci_bus *bus)  in pci_set_bus_msi_domain()  argument
817 	for (b = bus, d = NULL; !d && !pci_is_root_bus(b); b = b->parent) {  in pci_set_bus_msi_domain()
825 	dev_set_msi_domain(&bus->dev, d);  in pci_set_bus_msi_domain()
832 	struct pci_bus *bus, *b;  in pci_register_host_bridge()  local
840 	bus = pci_alloc_bus(NULL);  in pci_register_host_bridge()
841 	if (!bus)  in pci_register_host_bridge()
844 	bridge->bus = bus;  in pci_register_host_bridge()
848 	bus->sysdata = bridge->sysdata;  in pci_register_host_bridge()
849 	bus->msi = bridge->msi;  in pci_register_host_bridge()
850 	bus->ops = bridge->ops;  in pci_register_host_bridge()
851 	bus->number = bus->busn_res.start = bridge->busnr;  in pci_register_host_bridge()
853 	bus->domain_nr = pci_bus_find_domain_nr(bus, parent);  in pci_register_host_bridge()
856 	b = pci_find_bus(pci_domain_nr(bus), bridge->busnr);  in pci_register_host_bridge()
864 	dev_set_name(&bridge->dev, "pci%04x:%02x", pci_domain_nr(bus),  in pci_register_host_bridge()
876 	bus->bridge = get_device(&bridge->dev);  in pci_register_host_bridge()
877 	device_enable_async_suspend(bus->bridge);  in pci_register_host_bridge()
878 	pci_set_bus_of_node(bus);  in pci_register_host_bridge()
879 	pci_set_bus_msi_domain(bus);  in pci_register_host_bridge()
882 		set_dev_node(bus->bridge, pcibus_to_node(bus));  in pci_register_host_bridge()
884 	bus->dev.class = &pcibus_class;  in pci_register_host_bridge()
885 	bus->dev.parent = bus->bridge;  in pci_register_host_bridge()
887 	dev_set_name(&bus->dev, "%04x:%02x", pci_domain_nr(bus), bus->number);  in pci_register_host_bridge()
888 	name = dev_name(&bus->dev);  in pci_register_host_bridge()
890 	err = device_register(&bus->dev);  in pci_register_host_bridge()
894 	pcibios_add_bus(bus);  in pci_register_host_bridge()
897 	pci_create_legacy_files(bus);  in pci_register_host_bridge()
911 			pci_bus_insert_busn_res(bus, bus->number, res->end);  in pci_register_host_bridge()
913 			pci_bus_add_resource(bus, res, 0);  in pci_register_host_bridge()
927 		dev_info(&bus->dev, "root bus resource %pR%s\n", res, addr);  in pci_register_host_bridge()
931 	list_add_tail(&bus->node, &pci_root_buses);  in pci_register_host_bridge()
941 	kfree(bus);  in pci_register_host_bridge()
954 	if (bridge->bus->bus_flags & PCI_BUS_FLAGS_NO_EXTCFG)  in pci_bridge_child_ext_cfg_accessible()
1087 static unsigned int pci_scan_child_bus_extend(struct pci_bus *bus,
1113 static int pci_scan_bridge_extend(struct pci_bus *bus, struct pci_dev *dev,  in pci_scan_bridge_extend()  argument
1138 	if (!primary && (primary != bus->number) && secondary && subordinate) {  in pci_scan_bridge_extend()
1140 		primary = bus->number;  in pci_scan_bridge_extend()
1145 	    (primary != bus->number || secondary <= bus->number ||  in pci_scan_bridge_extend()
1179 		child = pci_find_bus(pci_domain_nr(bus), secondary);  in pci_scan_bridge_extend()
1181 			child = pci_add_new_bus(bus, dev, secondary);  in pci_scan_bridge_extend()
1227 		child = pci_find_bus(pci_domain_nr(bus), max+1);  in pci_scan_bridge_extend()
1229 			child = pci_add_new_bus(bus, dev, max+1);  in pci_scan_bridge_extend()
1233 						bus->busn_res.end);  in pci_scan_bridge_extend()
1267 				struct pci_bus *parent = bus;  in pci_scan_bridge_extend()
1268 				if (pci_find_bus(pci_domain_nr(bus),  in pci_scan_bridge_extend()
1300 		pci_domain_nr(bus), child->number);  in pci_scan_bridge_extend()
1303 	while (bus->parent) {  in pci_scan_bridge_extend()
1304 		if ((child->busn_res.end > bus->busn_res.end) ||  in pci_scan_bridge_extend()
1305 		    (child->number > bus->busn_res.end) ||  in pci_scan_bridge_extend()
1306 		    (child->number < bus->number) ||  in pci_scan_bridge_extend()
1307 		    (child->busn_res.end < bus->number)) {  in pci_scan_bridge_extend()
1312 		bus = bus->parent;  in pci_scan_bridge_extend()
1342 int pci_scan_bridge(struct pci_bus *bus, struct pci_dev *dev, int max, int pass)  in pci_scan_bridge()  argument
1344 	return pci_scan_bridge_extend(bus, dev, max, 0, pass);  in pci_scan_bridge()
1504 	if (dev->bus->bus_flags & PCI_BUS_FLAGS_NO_EXTCFG)  in pci_cfg_space_size()
1643 	dev->sysdata = dev->bus->sysdata;  in pci_setup_device()
1644 	dev->dev.parent = dev->bus->bridge;  in pci_setup_device()
1645 	dev->dev.bus = &pci_bus_type;  in pci_setup_device()
1659 	dev_set_name(&dev->dev, "%04x:%02x:%02x.%d", pci_domain_nr(dev->bus),  in pci_setup_device()
1660 		     dev->bus->number, PCI_SLOT(dev->devfn),  in pci_setup_device()
1724 				pcibios_bus_to_resource(dev->bus, res, &region);  in pci_setup_device()
1731 				pcibios_bus_to_resource(dev->bus, res, &region);  in pci_setup_device()
1740 				pcibios_bus_to_resource(dev->bus, res, &region);  in pci_setup_device()
1747 				pcibios_bus_to_resource(dev->bus, res, &region);  in pci_setup_device()
2048 	host = pci_find_host_bridge(dev->bus);  in pci_configure_extended_tags()
2118 	struct pci_host_bridge *host = pci_find_host_bridge(dev->bus);  in pci_configure_ltr()
2232 	pci_bus_put(pci_dev->bus);  in pci_release_dev()
2238 struct pci_dev *pci_alloc_dev(struct pci_bus *bus)  in pci_alloc_dev()  argument
2248 	dev->bus = pci_bus_get(bus);  in pci_alloc_dev()
2259 static bool pci_bus_wait_crs(struct pci_bus *bus, int devfn, u32 *l,  in pci_bus_wait_crs()  argument
2278 				pci_domain_nr(bus), bus->number,  in pci_bus_wait_crs()
2285 				pci_domain_nr(bus), bus->number,  in pci_bus_wait_crs()
2291 		if (pci_bus_read_config_dword(bus, devfn, PCI_VENDOR_ID, l))  in pci_bus_wait_crs()
2297 			pci_domain_nr(bus), bus->number,  in pci_bus_wait_crs()
2303 bool pci_bus_generic_read_dev_vendor_id(struct pci_bus *bus, int devfn, u32 *l,  in pci_bus_generic_read_dev_vendor_id()  argument
2306 	if (pci_bus_read_config_dword(bus, devfn, PCI_VENDOR_ID, l))  in pci_bus_generic_read_dev_vendor_id()
2315 		return pci_bus_wait_crs(bus, devfn, l, timeout);  in pci_bus_generic_read_dev_vendor_id()
2320 bool pci_bus_read_dev_vendor_id(struct pci_bus *bus, int devfn, u32 *l,  in pci_bus_read_dev_vendor_id()  argument
2324 	struct pci_dev *bridge = bus->self;  in pci_bus_read_dev_vendor_id()
2332 		return pci_idt_bus_quirk(bus, devfn, l, timeout);  in pci_bus_read_dev_vendor_id()
2335 	return pci_bus_generic_read_dev_vendor_id(bus, devfn, l, timeout);  in pci_bus_read_dev_vendor_id()
2343 static struct pci_dev *pci_scan_device(struct pci_bus *bus, int devfn)  in pci_scan_device()  argument
2348 	if (!pci_bus_read_dev_vendor_id(bus, devfn, &l, 60*1000))  in pci_scan_device()
2351 	dev = pci_alloc_dev(bus);  in pci_scan_device()
2363 		pci_bus_put(dev->bus);  in pci_scan_device()
2470 		d = dev_get_msi_domain(&dev->bus->dev);  in pci_set_msi_domain()
2475 void pci_device_add(struct pci_dev *dev, struct pci_bus *bus)  in pci_device_add()  argument
2484 	set_dev_node(&dev->dev, pcibus_to_node(bus));  in pci_device_add()
2509 	list_add_tail(&dev->bus_list, &bus->devices);  in pci_device_add()
2524 struct pci_dev *pci_scan_single_device(struct pci_bus *bus, int devfn)  in pci_scan_single_device()  argument
2528 	dev = pci_get_slot(bus, devfn);  in pci_scan_single_device()
2534 	dev = pci_scan_device(bus, devfn);  in pci_scan_single_device()
2538 	pci_device_add(dev, bus);  in pci_scan_single_device()
2544 static unsigned next_fn(struct pci_bus *bus, struct pci_dev *dev, unsigned fn)  in next_fn()  argument
2550 	if (pci_ari_enabled(bus)) {  in next_fn()
2572 static int only_one_child(struct pci_bus *bus)  in only_one_child()  argument
2574 	struct pci_dev *bridge = bus->self;  in only_one_child()
2609 int pci_scan_slot(struct pci_bus *bus, int devfn)  in pci_scan_slot()  argument
2614 	if (only_one_child(bus) && (devfn > 0))  in pci_scan_slot()
2617 	dev = pci_scan_single_device(bus, devfn);  in pci_scan_slot()
2623 	for (fn = next_fn(bus, dev, 0); fn > 0; fn = next_fn(bus, dev, fn)) {  in pci_scan_slot()
2624 		dev = pci_scan_single_device(bus, devfn + fn);  in pci_scan_slot()
2633 	if (bus->self && nr)  in pci_scan_slot()
2634 		pcie_aspm_init_link_state(bus->self);  in pci_scan_slot()
2680 		    dev->bus->self)  in pcie_write_mps()
2695 			mps = min(mps, pcie_get_mps(dev->bus->self));  in pcie_write_mps()
2770 void pcie_bus_configure_settings(struct pci_bus *bus)  in pcie_bus_configure_settings()  argument
2774 	if (!bus->self)  in pcie_bus_configure_settings()
2777 	if (!pci_is_pcie(bus->self))  in pcie_bus_configure_settings()
2789 		smpss = bus->self->pcie_mpss;  in pcie_bus_configure_settings()
2791 		pcie_find_smpss(bus->self, &smpss);  in pcie_bus_configure_settings()
2792 		pci_walk_bus(bus, pcie_find_smpss, &smpss);  in pcie_bus_configure_settings()
2795 	pcie_bus_configure_set(bus->self, &smpss);  in pcie_bus_configure_settings()
2796 	pci_walk_bus(bus, pcie_bus_configure_set, &smpss);  in pcie_bus_configure_settings()
2804 void __weak pcibios_fixup_bus(struct pci_bus *bus)  in pcibios_fixup_bus()  argument
2821 static unsigned int pci_scan_child_bus_extend(struct pci_bus *bus,  in pci_scan_child_bus_extend()  argument
2825 	unsigned int start = bus->busn_res.start;  in pci_scan_child_bus_extend()
2830 	dev_dbg(&bus->dev, "scanning bus\n");  in pci_scan_child_bus_extend()
2834 		nr_devs = pci_scan_slot(bus, devfn);  in pci_scan_child_bus_extend()
2843 				dev = pci_scan_single_device(bus, devfn + fn);  in pci_scan_child_bus_extend()
2851 	used_buses = pci_iov_bus_range(bus);  in pci_scan_child_bus_extend()
2858 	if (!bus->is_added) {  in pci_scan_child_bus_extend()
2859 		dev_dbg(&bus->dev, "fixups for bus\n");  in pci_scan_child_bus_extend()
2860 		pcibios_fixup_bus(bus);  in pci_scan_child_bus_extend()
2861 		bus->is_added = 1;  in pci_scan_child_bus_extend()
2869 	for_each_pci_bridge(dev, bus) {  in pci_scan_child_bus_extend()
2881 	for_each_pci_bridge(dev, bus) {  in pci_scan_child_bus_extend()
2883 		max = pci_scan_bridge_extend(bus, dev, max, 0, 0);  in pci_scan_child_bus_extend()
2895 	for_each_pci_bridge(dev, bus) {  in pci_scan_child_bus_extend()
2918 		max = pci_scan_bridge_extend(bus, dev, cmax, buses, 1);  in pci_scan_child_bus_extend()
2929 	if (bus->self && bus->self->is_hotplug_bridge) {  in pci_scan_child_bus_extend()
2936 			if (max > bus->busn_res.end)  in pci_scan_child_bus_extend()
2937 				max = bus->busn_res.end;  in pci_scan_child_bus_extend()
2939 			dev_dbg(&bus->dev, "%pR extended by %#02x\n",  in pci_scan_child_bus_extend()
2940 				&bus->busn_res, max - start);  in pci_scan_child_bus_extend()
2951 	dev_dbg(&bus->dev, "bus scan returning with max=%02x\n", max);  in pci_scan_child_bus_extend()
2962 unsigned int pci_scan_child_bus(struct pci_bus *bus)  in pci_scan_child_bus()  argument
2964 	return pci_scan_child_bus_extend(bus, 0);  in pci_scan_child_bus()
2980 void __weak pcibios_add_bus(struct pci_bus *bus)  in pcibios_add_bus()  argument
2984 void __weak pcibios_remove_bus(struct pci_bus *bus)  in pcibios_remove_bus()  argument
2988 struct pci_bus *pci_create_root_bus(struct device *parent, int bus,  in pci_create_root_bus()  argument
3002 	bridge->busnr = bus;  in pci_create_root_bus()
3009 	return bridge->bus;  in pci_create_root_bus()
3019 	struct pci_bus *bus, *child;  in pci_host_probe()  local
3028 	bus = bridge->bus;  in pci_host_probe()
3036 		pci_bus_claim_resources(bus);  in pci_host_probe()
3038 		pci_bus_size_bridges(bus);  in pci_host_probe()
3039 		pci_bus_assign_resources(bus);  in pci_host_probe()
3041 		list_for_each_entry(child, &bus->children, node)  in pci_host_probe()
3045 	pci_bus_add_devices(bus);  in pci_host_probe()
3050 int pci_bus_insert_busn_res(struct pci_bus *b, int bus, int bus_max)  in pci_bus_insert_busn_res()  argument
3055 	res->start = bus;  in pci_bus_insert_busn_res()
3118 	int max, bus, ret;  in pci_scan_root_bus_bridge()  local
3133 	b = bridge->bus;  in pci_scan_root_bus_bridge()
3134 	bus = bridge->busnr;  in pci_scan_root_bus_bridge()
3139 			bus);  in pci_scan_root_bus_bridge()
3140 		pci_bus_insert_busn_res(b, bus, 255);  in pci_scan_root_bus_bridge()
3152 struct pci_bus *pci_scan_root_bus(struct device *parent, int bus,  in pci_scan_root_bus()  argument
3166 	b = pci_create_root_bus(parent, bus, ops, sysdata, resources);  in pci_scan_root_bus()
3173 			bus);  in pci_scan_root_bus()
3174 		pci_bus_insert_busn_res(b, bus, 255);  in pci_scan_root_bus()
3186 struct pci_bus *pci_scan_bus(int bus, struct pci_ops *ops,  in pci_scan_bus()  argument
3195 	b = pci_create_root_bus(NULL, bus, ops, sysdata, &resources);  in pci_scan_bus()
3219 	struct pci_bus *bus = bridge->subordinate;  in pci_rescan_bus_bridge_resize()  local
3221 	max = pci_scan_child_bus(bus);  in pci_rescan_bus_bridge_resize()
3225 	pci_bus_add_devices(bus);  in pci_rescan_bus_bridge_resize()
3239 unsigned int pci_rescan_bus(struct pci_bus *bus)  in pci_rescan_bus()  argument
3243 	max = pci_scan_child_bus(bus);  in pci_rescan_bus()
3244 	pci_assign_unassigned_bus_resources(bus);  in pci_rescan_bus()
3245 	pci_bus_add_devices(bus);  in pci_rescan_bus()
3275 	if      (pci_domain_nr(a->bus) < pci_domain_nr(b->bus)) return -1;  in pci_sort_bf_cmp()
3276 	else if (pci_domain_nr(a->bus) > pci_domain_nr(b->bus)) return  1;  in pci_sort_bf_cmp()
3278 	if      (a->bus->number < b->bus->number) return -1;  in pci_sort_bf_cmp()
3279 	else if (a->bus->number > b->bus->number) return  1;  in pci_sort_bf_cmp()
3294 	struct pci_bus *parent = dev->bus;  in pci_hp_add_bridge()