145 	struct acpiphp_slot *slot, *next;  in free_bridge()  local
152 	list_for_each_entry_safe(slot, next, &bridge->slots, node) {  in free_bridge()
153 		list_for_each_entry_safe(func, tmp, &slot->funcs, sibling)  in free_bridge()
156 		kfree(slot);  in free_bridge()
190 	bus = context->func.slot->bus;  in acpiphp_post_dock_fixup()
195 	 * secondary bridge on slot  in acpiphp_post_dock_fixup()
224 	struct acpiphp_slot *slot;  in acpiphp_add_context()  local
268 	/* search for objects that share the same slot */  in acpiphp_add_context()
269 	list_for_each_entry(slot, &bridge->slots, node)  in acpiphp_add_context()
270 		if (slot->device == device)  in acpiphp_add_context()
273 	slot = kzalloc(sizeof(struct acpiphp_slot), GFP_KERNEL);  in acpiphp_add_context()
274 	if (!slot) {  in acpiphp_add_context()
281 	slot->bus = bridge->pci_bus;  in acpiphp_add_context()
282 	slot->device = device;  in acpiphp_add_context()
283 	INIT_LIST_HEAD(&slot->funcs);  in acpiphp_add_context()
285 	list_add_tail(&slot->node, &bridge->slots);  in acpiphp_add_context()
304 		pr_debug("found ACPI PCI Hotplug slot %llu at PCI %04x:%02x:%02x\n",  in acpiphp_add_context()
307 		retval = acpiphp_register_hotplug_slot(slot, sun);  in acpiphp_add_context()
309 			slot->slot = NULL;  in acpiphp_add_context()
312 				pr_warn("Slot %llu already registered by another hotplug driver\n", sun);  in acpiphp_add_context()
316 		/* Even if the slot registration fails, we can still use it. */  in acpiphp_add_context()
320 	newfunc->slot = slot;  in acpiphp_add_context()
321 	list_add_tail(&newfunc->sibling, &slot->funcs);  in acpiphp_add_context()
325 		slot->flags |= SLOT_ENABLED;  in acpiphp_add_context()
332 	struct acpiphp_slot *slot;  in cleanup_bridge()  local
335 	list_for_each_entry(slot, &bridge->slots, node) {  in cleanup_bridge()
336 		list_for_each_entry(func, &slot->funcs, sibling) {  in cleanup_bridge()
344 		slot->flags |= SLOT_IS_GOING_AWAY;  in cleanup_bridge()
345 		if (slot->slot)  in cleanup_bridge()
346 			acpiphp_unregister_hotplug_slot(slot);  in cleanup_bridge()
385 static void acpiphp_set_acpi_region(struct acpiphp_slot *slot)  in acpiphp_set_acpi_region()  argument
391 	list_for_each_entry(func, &slot->funcs, sibling) {  in acpiphp_set_acpi_region()
404 static void check_hotplug_bridge(struct acpiphp_slot *slot, struct pci_dev *dev)  in check_hotplug_bridge()  argument
412 	list_for_each_entry(func, &slot->funcs, sibling) {  in check_hotplug_bridge()
420 static int acpiphp_rescan_slot(struct acpiphp_slot *slot)  in acpiphp_rescan_slot()  argument
424 	list_for_each_entry(func, &slot->funcs, sibling) {  in acpiphp_rescan_slot()
431 	return pci_scan_slot(slot->bus, PCI_DEVFN(slot->device, 0));  in acpiphp_rescan_slot()
458  * enable_slot - enable, configure a slot
459  * @slot: slot to be enabled
460  * @bridge: true if enable is for the whole bridge (not a single slot)
462  * This function should be called per *physical slot*,
463  * not per each slot object in ACPI namespace.
465 static void enable_slot(struct acpiphp_slot *slot, bool bridge)  in enable_slot()  argument
468 	struct pci_bus *bus = slot->bus;  in enable_slot()
474 		 * slot management and resource allocation for hotplug  in enable_slot()
480 			if (PCI_SLOT(dev->devfn) == slot->device)  in enable_slot()
488 		acpiphp_rescan_slot(slot);  in enable_slot()
492 				if (PCI_SLOT(dev->devfn) != slot->device)  in enable_slot()
497 					check_hotplug_bridge(slot, dev);  in enable_slot()
509 	acpiphp_set_acpi_region(slot);  in enable_slot()
519 	slot->flags |= SLOT_ENABLED;  in enable_slot()
520 	list_for_each_entry(func, &slot->funcs, sibling) {  in enable_slot()
521 		dev = pci_get_slot(bus, PCI_DEVFN(slot->device,  in enable_slot()
526 			slot->flags &= ~SLOT_ENABLED;  in enable_slot()
533  * disable_slot - disable a slot
534  * @slot: ACPI PHP slot
536 static void disable_slot(struct acpiphp_slot *slot)  in disable_slot()  argument
538 	struct pci_bus *bus = slot->bus;  in disable_slot()
549 		if (PCI_SLOT(dev->devfn) == slot->device)  in disable_slot()
552 	list_for_each_entry(func, &slot->funcs, sibling)  in disable_slot()
555 	slot->flags &= ~SLOT_ENABLED;  in disable_slot()
558 static bool slot_no_hotplug(struct acpiphp_slot *slot)  in slot_no_hotplug()  argument
560 	struct pci_bus *bus = slot->bus;  in slot_no_hotplug()
564 		if (PCI_SLOT(dev->devfn) == slot->device && dev->ignore_hotplug)  in slot_no_hotplug()
571  * get_slot_status - get ACPI slot status
572  * @slot: ACPI PHP slot
574  * If a slot has _STA for each function and if any one of them
577  * If a slot doesn't have _STA and if any one of its functions'
582 static unsigned int get_slot_status(struct acpiphp_slot *slot)  in get_slot_status()  argument
588 	list_for_each_entry(func, &slot->funcs, sibling) {  in get_slot_status()
597 			if (pci_bus_read_dev_vendor_id(slot->bus,  in get_slot_status()
598 					PCI_DEVFN(slot->device, func->function),  in get_slot_status()
608 		 * Check for the slot itself since it may be that the  in get_slot_status()
609 		 * ACPI slot is a device below PCIe upstream port so in  in get_slot_status()
612 		if (pci_bus_read_dev_vendor_id(slot->bus,  in get_slot_status()
613 				PCI_DEVFN(slot->device, 0), &dvid, 0)) {  in get_slot_status()
682 	struct acpiphp_slot *slot;  in acpiphp_check_bridge()  local
691 	list_for_each_entry(slot, &bridge->slots, node) {  in acpiphp_check_bridge()
692 		struct pci_bus *bus = slot->bus;  in acpiphp_check_bridge()
695 		if (slot_no_hotplug(slot)) {  in acpiphp_check_bridge()
697 		} else if (device_status_valid(get_slot_status(slot))) {  in acpiphp_check_bridge()
701 				if (PCI_SLOT(dev->devfn) == slot->device)  in acpiphp_check_bridge()
705 			enable_slot(slot, true);  in acpiphp_check_bridge()
707 			disable_slot(slot);  in acpiphp_check_bridge()
764 static int acpiphp_disable_and_eject_slot(struct acpiphp_slot *slot);
770 	struct acpiphp_slot *slot = func->slot;  in hotplug_event()  local
788 		else if (!(slot->flags & SLOT_IS_GOING_AWAY))  in hotplug_event()
789 			enable_slot(slot, false);  in hotplug_event()
798 		} else if (!(slot->flags & SLOT_IS_GOING_AWAY)) {  in hotplug_event()
800 			 * Check if anything has changed in the slot and rescan  in hotplug_event()
803 			if (acpiphp_rescan_slot(slot))  in hotplug_event()
811 		acpiphp_disable_and_eject_slot(slot);  in hotplug_event()
837  * A "slot" is an object associated with a PCI device number.  All functions
838  * (PCI devices) with the same bus and device number belong to the same slot.
906 	/* register all slot objects under this bridge */  in acpiphp_enumerate_slots()
941  * acpiphp_remove_slots - Remove slot objects associated with a given bus.
942  * @bus: PCI bus to remove the slot objects for.
963  * acpiphp_enable_slot - power on slot
964  * @slot: ACPI PHP slot
966 int acpiphp_enable_slot(struct acpiphp_slot *slot)  in acpiphp_enable_slot()  argument
970 	if (slot->flags & SLOT_IS_GOING_AWAY) {  in acpiphp_enable_slot()
976 	if (!(slot->flags & SLOT_ENABLED))  in acpiphp_enable_slot()
977 		enable_slot(slot, false);  in acpiphp_enable_slot()
984  * acpiphp_disable_and_eject_slot - power off and eject slot
985  * @slot: ACPI PHP slot
987 static int acpiphp_disable_and_eject_slot(struct acpiphp_slot *slot)  in acpiphp_disable_and_eject_slot()  argument
991 	if (slot->flags & SLOT_IS_GOING_AWAY)  in acpiphp_disable_and_eject_slot()
995 	disable_slot(slot);  in acpiphp_disable_and_eject_slot()
997 	list_for_each_entry(func, &slot->funcs, sibling)  in acpiphp_disable_and_eject_slot()
1010 int acpiphp_disable_slot(struct acpiphp_slot *slot)  in acpiphp_disable_slot()  argument
1020 	ret = acpiphp_disable_and_eject_slot(slot);  in acpiphp_disable_slot()
1027  * slot enabled:  1
1028  * slot disabled: 0
1030 u8 acpiphp_get_power_status(struct acpiphp_slot *slot)  in acpiphp_get_power_status()  argument
1032 	return (slot->flags & SLOT_ENABLED);  in acpiphp_get_power_status()
1039 u8 acpiphp_get_latch_status(struct acpiphp_slot *slot)  in acpiphp_get_latch_status()  argument
1041 	return !(get_slot_status(slot) & ACPI_STA_DEVICE_UI);  in acpiphp_get_latch_status()
1048 u8 acpiphp_get_adapter_status(struct acpiphp_slot *slot)  in acpiphp_get_adapter_status()  argument
1050 	return !!get_slot_status(slot);  in acpiphp_get_adapter_status()