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
277 	/* search for objects that share the same slot */  in acpiphp_add_context()
278 	list_for_each_entry(slot, &bridge->slots, node)  in acpiphp_add_context()
279 		if (slot->device == device)  in acpiphp_add_context()
282 	slot = kzalloc(sizeof(struct acpiphp_slot), GFP_KERNEL);  in acpiphp_add_context()
283 	if (!slot) {  in acpiphp_add_context()
290 	slot->bus = bridge->pci_bus;  in acpiphp_add_context()
291 	slot->device = device;  in acpiphp_add_context()
292 	INIT_LIST_HEAD(&slot->funcs);  in acpiphp_add_context()
294 	list_add_tail(&slot->node, &bridge->slots);  in acpiphp_add_context()
313 		pr_debug("found ACPI PCI Hotplug slot %llu at PCI %04x:%02x:%02x\n",  in acpiphp_add_context()
316 		retval = acpiphp_register_hotplug_slot(slot, sun);  in acpiphp_add_context()
318 			slot->slot = NULL;  in acpiphp_add_context()
321 				pr_warn("Slot %llu already registered by another hotplug driver\n", sun);  in acpiphp_add_context()
325 		/* Even if the slot registration fails, we can still use it. */  in acpiphp_add_context()
329 	newfunc->slot = slot;  in acpiphp_add_context()
330 	list_add_tail(&newfunc->sibling, &slot->funcs);  in acpiphp_add_context()
334 		slot->flags |= SLOT_ENABLED;  in acpiphp_add_context()
341 	struct acpiphp_slot *slot;  in cleanup_bridge()  local
344 	list_for_each_entry(slot, &bridge->slots, node) {  in cleanup_bridge()
345 		list_for_each_entry(func, &slot->funcs, sibling) {  in cleanup_bridge()
353 		slot->flags |= SLOT_IS_GOING_AWAY;  in cleanup_bridge()
354 		if (slot->slot)  in cleanup_bridge()
355 			acpiphp_unregister_hotplug_slot(slot);  in cleanup_bridge()
394 static void acpiphp_set_acpi_region(struct acpiphp_slot *slot)  in acpiphp_set_acpi_region()  argument
398 	list_for_each_entry(func, &slot->funcs, sibling) {  in acpiphp_set_acpi_region()
406 static void check_hotplug_bridge(struct acpiphp_slot *slot, struct pci_dev *dev)  in check_hotplug_bridge()  argument
414 	list_for_each_entry(func, &slot->funcs, sibling) {  in check_hotplug_bridge()
422 static int acpiphp_rescan_slot(struct acpiphp_slot *slot)  in acpiphp_rescan_slot()  argument
426 	list_for_each_entry(func, &slot->funcs, sibling) {  in acpiphp_rescan_slot()
433 	return pci_scan_slot(slot->bus, PCI_DEVFN(slot->device, 0));  in acpiphp_rescan_slot()
467  * enable_slot - enable, configure a slot
468  * @slot: slot to be enabled
469  * @bridge: true if enable is for the whole bridge (not a single slot)
471  * This function should be called per *physical slot*,
472  * not per each slot object in ACPI namespace.
474 static void enable_slot(struct acpiphp_slot *slot, bool bridge)  in enable_slot()  argument
477 	struct pci_bus *bus = slot->bus;  in enable_slot()
483 		 * slot management and resource allocation for hotplug  in enable_slot()
489 			if (PCI_SLOT(dev->devfn) == slot->device)  in enable_slot()
496 		acpiphp_rescan_slot(slot);  in enable_slot()
500 				if (PCI_SLOT(dev->devfn) != slot->device)  in enable_slot()
505 					check_hotplug_bridge(slot, dev);  in enable_slot()
517 	acpiphp_set_acpi_region(slot);  in enable_slot()
527 	slot->flags |= SLOT_ENABLED;  in enable_slot()
528 	list_for_each_entry(func, &slot->funcs, sibling) {  in enable_slot()
529 		dev = pci_get_slot(bus, PCI_DEVFN(slot->device,  in enable_slot()
534 			slot->flags &= ~SLOT_ENABLED;  in enable_slot()
542  * disable_slot - disable a slot
543  * @slot: ACPI PHP slot
545 static void disable_slot(struct acpiphp_slot *slot)  in disable_slot()  argument
547 	struct pci_bus *bus = slot->bus;  in disable_slot()
558 		if (PCI_SLOT(dev->devfn) == slot->device)  in disable_slot()
561 	list_for_each_entry(func, &slot->funcs, sibling)  in disable_slot()
564 	slot->flags &= ~SLOT_ENABLED;  in disable_slot()
567 static bool slot_no_hotplug(struct acpiphp_slot *slot)  in slot_no_hotplug()  argument
569 	struct pci_bus *bus = slot->bus;  in slot_no_hotplug()
573 		if (PCI_SLOT(dev->devfn) == slot->device && dev->ignore_hotplug)  in slot_no_hotplug()
580  * get_slot_status - get ACPI slot status
581  * @slot: ACPI PHP slot
583  * If a slot has _STA for each function and if any one of them
586  * If a slot doesn't have _STA and if any one of its functions'
591 static unsigned int get_slot_status(struct acpiphp_slot *slot)  in get_slot_status()  argument
597 	list_for_each_entry(func, &slot->funcs, sibling) {  in get_slot_status()
606 			if (pci_bus_read_dev_vendor_id(slot->bus,  in get_slot_status()
607 					PCI_DEVFN(slot->device, func->function),  in get_slot_status()
617 		 * Check for the slot itself since it may be that the  in get_slot_status()
618 		 * ACPI slot is a device below PCIe upstream port so in  in get_slot_status()
621 		if (pci_bus_read_dev_vendor_id(slot->bus,  in get_slot_status()
622 				PCI_DEVFN(slot->device, 0), &dvid, 0)) {  in get_slot_status()
691 	struct acpiphp_slot *slot;  in acpiphp_check_bridge()  local
700 	list_for_each_entry(slot, &bridge->slots, node) {  in acpiphp_check_bridge()
701 		struct pci_bus *bus = slot->bus;  in acpiphp_check_bridge()
704 		if (slot_no_hotplug(slot)) {  in acpiphp_check_bridge()
706 		} else if (device_status_valid(get_slot_status(slot))) {  in acpiphp_check_bridge()
710 				if (PCI_SLOT(dev->devfn) == slot->device)  in acpiphp_check_bridge()
714 			enable_slot(slot, true);  in acpiphp_check_bridge()
716 			disable_slot(slot);  in acpiphp_check_bridge()
773 static int acpiphp_disable_and_eject_slot(struct acpiphp_slot *slot);
779 	struct acpiphp_slot *slot = func->slot;  in hotplug_event()  local
797 		else if (!(slot->flags & SLOT_IS_GOING_AWAY))  in hotplug_event()
798 			enable_slot(slot, false);  in hotplug_event()
807 		} else if (!(slot->flags & SLOT_IS_GOING_AWAY)) {  in hotplug_event()
809 			 * Check if anything has changed in the slot and rescan  in hotplug_event()
812 			if (acpiphp_rescan_slot(slot))  in hotplug_event()
820 		acpiphp_disable_and_eject_slot(slot);  in hotplug_event()
846  * A "slot" is an object associated with a PCI device number.  All functions
847  * (PCI devices) with the same bus and device number belong to the same slot.
915 	/* register all slot objects under this bridge */  in acpiphp_enumerate_slots()
950  * acpiphp_remove_slots - Remove slot objects associated with a given bus.
951  * @bus: PCI bus to remove the slot objects for.
972  * acpiphp_enable_slot - power on slot
973  * @slot: ACPI PHP slot
975 int acpiphp_enable_slot(struct acpiphp_slot *slot)  in acpiphp_enable_slot()  argument
979 	if (slot->flags & SLOT_IS_GOING_AWAY) {  in acpiphp_enable_slot()
985 	if (!(slot->flags & SLOT_ENABLED))  in acpiphp_enable_slot()
986 		enable_slot(slot, false);  in acpiphp_enable_slot()
993  * acpiphp_disable_and_eject_slot - power off and eject slot
994  * @slot: ACPI PHP slot
996 static int acpiphp_disable_and_eject_slot(struct acpiphp_slot *slot)  in acpiphp_disable_and_eject_slot()  argument
1000 	if (slot->flags & SLOT_IS_GOING_AWAY)  in acpiphp_disable_and_eject_slot()
1004 	disable_slot(slot);  in acpiphp_disable_and_eject_slot()
1006 	list_for_each_entry(func, &slot->funcs, sibling)  in acpiphp_disable_and_eject_slot()
1019 int acpiphp_disable_slot(struct acpiphp_slot *slot)  in acpiphp_disable_slot()  argument
1029 	ret = acpiphp_disable_and_eject_slot(slot);  in acpiphp_disable_slot()
1036  * slot enabled:  1
1037  * slot disabled: 0
1039 u8 acpiphp_get_power_status(struct acpiphp_slot *slot)  in acpiphp_get_power_status()  argument
1041 	return (slot->flags & SLOT_ENABLED);  in acpiphp_get_power_status()
1048 u8 acpiphp_get_latch_status(struct acpiphp_slot *slot)  in acpiphp_get_latch_status()  argument
1050 	return !(get_slot_status(slot) & ACPI_STA_DEVICE_UI);  in acpiphp_get_latch_status()
1057 u8 acpiphp_get_adapter_status(struct acpiphp_slot *slot)  in acpiphp_get_adapter_status()  argument
1059 	return !!get_slot_status(slot);  in acpiphp_get_adapter_status()