153 	struct acpiphp_slot *slot, *next;  in free_bridge()  local
160 	list_for_each_entry_safe(slot, next, &bridge->slots, node) {  in free_bridge()
161 		list_for_each_entry_safe(func, tmp, &slot->funcs, sibling)  in free_bridge()
164 		kfree(slot);  in free_bridge()
198 	bus = context->func.slot->bus;  in acpiphp_post_dock_fixup()
203 	 * secondary bridge on slot  in acpiphp_post_dock_fixup()
232 	struct acpiphp_slot *slot;  in acpiphp_add_context()  local
276 	/* search for objects that share the same slot */  in acpiphp_add_context()
277 	list_for_each_entry(slot, &bridge->slots, node)  in acpiphp_add_context()
278 		if (slot->device == device)  in acpiphp_add_context()
281 	slot = kzalloc(sizeof(struct acpiphp_slot), GFP_KERNEL);  in acpiphp_add_context()
282 	if (!slot) {  in acpiphp_add_context()
289 	slot->bus = bridge->pci_bus;  in acpiphp_add_context()
290 	slot->device = device;  in acpiphp_add_context()
291 	INIT_LIST_HEAD(&slot->funcs);  in acpiphp_add_context()
293 	list_add_tail(&slot->node, &bridge->slots);  in acpiphp_add_context()
312 		pr_debug("found ACPI PCI Hotplug slot %llu at PCI %04x:%02x:%02x\n",  in acpiphp_add_context()
315 		retval = acpiphp_register_hotplug_slot(slot, sun);  in acpiphp_add_context()
317 			slot->slot = NULL;  in acpiphp_add_context()
320 				pr_warn("Slot %llu already registered by another hotplug driver\n", sun);  in acpiphp_add_context()
324 		/* Even if the slot registration fails, we can still use it. */  in acpiphp_add_context()
328 	newfunc->slot = slot;  in acpiphp_add_context()
329 	list_add_tail(&newfunc->sibling, &slot->funcs);  in acpiphp_add_context()
333 		slot->flags |= SLOT_ENABLED;  in acpiphp_add_context()
340 	struct acpiphp_slot *slot;  in cleanup_bridge()  local
343 	list_for_each_entry(slot, &bridge->slots, node) {  in cleanup_bridge()
344 		list_for_each_entry(func, &slot->funcs, sibling) {  in cleanup_bridge()
352 		slot->flags |= SLOT_IS_GOING_AWAY;  in cleanup_bridge()
353 		if (slot->slot)  in cleanup_bridge()
354 			acpiphp_unregister_hotplug_slot(slot);  in cleanup_bridge()
393 static void acpiphp_set_acpi_region(struct acpiphp_slot *slot)  in acpiphp_set_acpi_region()  argument
397 	list_for_each_entry(func, &slot->funcs, sibling) {  in acpiphp_set_acpi_region()
405 static void check_hotplug_bridge(struct acpiphp_slot *slot, struct pci_dev *dev)  in check_hotplug_bridge()  argument
413 	list_for_each_entry(func, &slot->funcs, sibling) {  in check_hotplug_bridge()
421 static int acpiphp_rescan_slot(struct acpiphp_slot *slot)  in acpiphp_rescan_slot()  argument
425 	list_for_each_entry(func, &slot->funcs, sibling) {  in acpiphp_rescan_slot()
432 	return pci_scan_slot(slot->bus, PCI_DEVFN(slot->device, 0));  in acpiphp_rescan_slot()
466  * enable_slot - enable, configure a slot
467  * @slot: slot to be enabled
468  * @bridge: true if enable is for the whole bridge (not a single slot)
470  * This function should be called per *physical slot*,
471  * not per each slot object in ACPI namespace.
473 static void enable_slot(struct acpiphp_slot *slot, bool bridge)  in enable_slot()  argument
476 	struct pci_bus *bus = slot->bus;  in enable_slot()
482 		 * slot management and resource allocation for hotplug  in enable_slot()
488 			if (PCI_SLOT(dev->devfn) == slot->device)  in enable_slot()
495 		acpiphp_rescan_slot(slot);  in enable_slot()
499 				if (PCI_SLOT(dev->devfn) != slot->device)  in enable_slot()
504 					check_hotplug_bridge(slot, dev);  in enable_slot()
516 	acpiphp_set_acpi_region(slot);  in enable_slot()
526 	slot->flags |= SLOT_ENABLED;  in enable_slot()
527 	list_for_each_entry(func, &slot->funcs, sibling) {  in enable_slot()
528 		dev = pci_get_slot(bus, PCI_DEVFN(slot->device,  in enable_slot()
533 			slot->flags &= ~SLOT_ENABLED;  in enable_slot()
540  * disable_slot - disable a slot
541  * @slot: ACPI PHP slot
543 static void disable_slot(struct acpiphp_slot *slot)  in disable_slot()  argument
545 	struct pci_bus *bus = slot->bus;  in disable_slot()
556 		if (PCI_SLOT(dev->devfn) == slot->device)  in disable_slot()
559 	list_for_each_entry(func, &slot->funcs, sibling)  in disable_slot()
562 	slot->flags &= ~SLOT_ENABLED;  in disable_slot()
565 static bool slot_no_hotplug(struct acpiphp_slot *slot)  in slot_no_hotplug()  argument
567 	struct pci_bus *bus = slot->bus;  in slot_no_hotplug()
571 		if (PCI_SLOT(dev->devfn) == slot->device && dev->ignore_hotplug)  in slot_no_hotplug()
578  * get_slot_status - get ACPI slot status
579  * @slot: ACPI PHP slot
581  * If a slot has _STA for each function and if any one of them
584  * If a slot doesn't have _STA and if any one of its functions'
589 static unsigned int get_slot_status(struct acpiphp_slot *slot)  in get_slot_status()  argument
595 	list_for_each_entry(func, &slot->funcs, sibling) {  in get_slot_status()
604 			if (pci_bus_read_dev_vendor_id(slot->bus,  in get_slot_status()
605 					PCI_DEVFN(slot->device, func->function),  in get_slot_status()
615 		 * Check for the slot itself since it may be that the  in get_slot_status()
616 		 * ACPI slot is a device below PCIe upstream port so in  in get_slot_status()
619 		if (pci_bus_read_dev_vendor_id(slot->bus,  in get_slot_status()
620 				PCI_DEVFN(slot->device, 0), &dvid, 0)) {  in get_slot_status()
689 	struct acpiphp_slot *slot;  in acpiphp_check_bridge()  local
698 	list_for_each_entry(slot, &bridge->slots, node) {  in acpiphp_check_bridge()
699 		struct pci_bus *bus = slot->bus;  in acpiphp_check_bridge()
702 		if (slot_no_hotplug(slot)) {  in acpiphp_check_bridge()
704 		} else if (device_status_valid(get_slot_status(slot))) {  in acpiphp_check_bridge()
708 				if (PCI_SLOT(dev->devfn) == slot->device)  in acpiphp_check_bridge()
712 			enable_slot(slot, true);  in acpiphp_check_bridge()
714 			disable_slot(slot);  in acpiphp_check_bridge()
771 static int acpiphp_disable_and_eject_slot(struct acpiphp_slot *slot);
777 	struct acpiphp_slot *slot = func->slot;  in hotplug_event()  local
795 		else if (!(slot->flags & SLOT_IS_GOING_AWAY))  in hotplug_event()
796 			enable_slot(slot, false);  in hotplug_event()
805 		} else if (!(slot->flags & SLOT_IS_GOING_AWAY)) {  in hotplug_event()
807 			 * Check if anything has changed in the slot and rescan  in hotplug_event()
810 			if (acpiphp_rescan_slot(slot))  in hotplug_event()
818 		acpiphp_disable_and_eject_slot(slot);  in hotplug_event()
844  * A "slot" is an object associated with a PCI device number.  All functions
845  * (PCI devices) with the same bus and device number belong to the same slot.
913 	/* register all slot objects under this bridge */  in acpiphp_enumerate_slots()
948  * acpiphp_remove_slots - Remove slot objects associated with a given bus.
949  * @bus: PCI bus to remove the slot objects for.
970  * acpiphp_enable_slot - power on slot
971  * @slot: ACPI PHP slot
973 int acpiphp_enable_slot(struct acpiphp_slot *slot)  in acpiphp_enable_slot()  argument
977 	if (slot->flags & SLOT_IS_GOING_AWAY) {  in acpiphp_enable_slot()
983 	if (!(slot->flags & SLOT_ENABLED))  in acpiphp_enable_slot()
984 		enable_slot(slot, false);  in acpiphp_enable_slot()
991  * acpiphp_disable_and_eject_slot - power off and eject slot
992  * @slot: ACPI PHP slot
994 static int acpiphp_disable_and_eject_slot(struct acpiphp_slot *slot)  in acpiphp_disable_and_eject_slot()  argument
998 	if (slot->flags & SLOT_IS_GOING_AWAY)  in acpiphp_disable_and_eject_slot()
1002 	disable_slot(slot);  in acpiphp_disable_and_eject_slot()
1004 	list_for_each_entry(func, &slot->funcs, sibling)  in acpiphp_disable_and_eject_slot()
1017 int acpiphp_disable_slot(struct acpiphp_slot *slot)  in acpiphp_disable_slot()  argument
1027 	ret = acpiphp_disable_and_eject_slot(slot);  in acpiphp_disable_slot()
1034  * slot enabled:  1
1035  * slot disabled: 0
1037 u8 acpiphp_get_power_status(struct acpiphp_slot *slot)  in acpiphp_get_power_status()  argument
1039 	return (slot->flags & SLOT_ENABLED);  in acpiphp_get_power_status()
1046 u8 acpiphp_get_latch_status(struct acpiphp_slot *slot)  in acpiphp_get_latch_status()  argument
1048 	return !(get_slot_status(slot) & ACPI_STA_DEVICE_UI);  in acpiphp_get_latch_status()
1055 u8 acpiphp_get_adapter_status(struct acpiphp_slot *slot)  in acpiphp_get_adapter_status()  argument
1057 	return !!get_slot_status(slot);  in acpiphp_get_adapter_status()