pci/hotplug/pci_hotplug_core.c

50 static int get_##name(struct hotplug_slot *slot, type *value)		\
52 	const struct hotplug_slot_ops *ops = slot->ops;			\
54 	if (!try_module_get(slot->owner))				\
57 		retval = ops->get_##name(slot, value);			\
58 	module_put(slot->owner);					\
82 	struct hotplug_slot *slot = pci_slot->hotplug;
91 	if (!try_module_get(slot->owner)) {
97 		if (slot->ops->disable_slot)
98 			retval = slot->ops->disable_slot(slot);
102 		if (slot->ops->enable_slot)
103 			retval = slot->ops->enable_slot(slot);
110 	module_put(slot->owner);
139 	struct hotplug_slot *slot = pci_slot->hotplug;
140 	const struct hotplug_slot_ops *ops = slot->ops;
149 	if (!try_module_get(slot->owner)) {
154 		retval = ops->set_attention_status(slot, attention);
155 	module_put(slot->owner);
206 	struct hotplug_slot *slot = pci_slot->hotplug;
215 	if (!try_module_get(slot->owner)) {
219 	if (slot->ops->hardware_test)
220 		retval = slot->ops->hardware_test(slot, test);
221 	module_put(slot->owner);
236 	struct hotplug_slot *slot = pci_slot->hotplug;
238 	if ((!slot) || (!slot->ops))
240 	if ((slot->ops->enable_slot) ||
241 	    (slot->ops->disable_slot) ||
242 	    (slot->ops->get_power_status))
249 	struct hotplug_slot *slot = pci_slot->hotplug;
251 	if ((!slot) || (!slot->ops))
253 	if ((slot->ops->set_attention_status) ||
254 	    (slot->ops->get_attention_status))
261 	struct hotplug_slot *slot = pci_slot->hotplug;
263 	if ((!slot) || (!slot->ops))
265 	if (slot->ops->get_latch_status)
272 	struct hotplug_slot *slot = pci_slot->hotplug;
274 	if ((!slot) || (!slot->ops))
276 	if (slot->ops->get_adapter_status)
283 	struct hotplug_slot *slot = pci_slot->hotplug;
285 	if ((!slot) || (!slot->ops))
287 	if (slot->ops->hardware_test)
380 	struct hotplug_slot *slot;
382 	list_for_each_entry(slot, &pci_hotplug_slot_list, slot_list) {
383 		if (strcmp(hotplug_slot_name(slot), name) == 0)
384 			return slot;
391  * @bus: bus this slot is on
392  * @slot: pointer to the &struct hotplug_slot to register
398  * Prepares a hotplug slot for in-kernel use and immediately publishes it to
404 int __pci_hp_register(struct hotplug_slot *slot, struct pci_bus *bus,
410 	result = __pci_hp_initialize(slot, bus, devnr, name, owner, mod_name);
414 	result = pci_hp_add(slot);
416 		pci_hp_destroy(slot);
423  * __pci_hp_initialize - prepare hotplug slot for in-kernel use
424  * @slot: pointer to the &struct hotplug_slot to initialize
425  * @bus: bus this slot is on
426  * @devnr: slot number
431  * Allocate and fill in a PCI slot for use by a hotplug driver.  Once this has
432  * been called, the driver may invoke hotplug_slot_name() to get the slot's
438 int __pci_hp_initialize(struct hotplug_slot *slot, struct pci_bus *bus,
444 	if (slot == NULL)
446 	if (slot->ops == NULL)
449 	slot->owner = owner;
450 	slot->mod_name = mod_name;
457 	pci_slot = pci_create_slot(bus, devnr, name, slot);
461 	slot->pci_slot = pci_slot;
462 	pci_slot->hotplug = slot;
468  * pci_hp_add - publish hotplug slot to user space
469  * @slot: pointer to the &struct hotplug_slot to publish
471  * Make a hotplug slot's sysfs interface available and inform user space of its
477 int pci_hp_add(struct hotplug_slot *slot)
479 	struct pci_slot *pci_slot = slot->pci_slot;
488 	list_add(&slot->slot_list, &pci_hotplug_slot_list);
490 	dbg("Added slot %s to the list\n", hotplug_slot_name(slot));
497  * @slot: pointer to the &struct hotplug_slot to deregister
499  * The @slot must have been registered with the pci hotplug subsystem
504 void pci_hp_deregister(struct hotplug_slot *slot)
506 	pci_hp_del(slot);
507 	pci_hp_destroy(slot);
512  * pci_hp_del - unpublish hotplug slot from user space
513  * @slot: pointer to the &struct hotplug_slot to unpublish
515  * Remove a hotplug slot's sysfs interface.
519 void pci_hp_del(struct hotplug_slot *slot)
523 	if (WARN_ON(!slot))
527 	temp = get_slot_from_name(hotplug_slot_name(slot));
528 	if (WARN_ON(temp != slot)) {
533 	list_del(&slot->slot_list);
535 	dbg("Removed slot %s from the list\n", hotplug_slot_name(slot));
536 	fs_remove_slot(slot->pci_slot);
541  * pci_hp_destroy - remove hotplug slot from in-kernel use
542  * @slot: pointer to the &struct hotplug_slot to destroy
544  * Destroy a PCI slot used by a hotplug driver.  Once this has been called,
545  * the driver may no longer invoke hotplug_slot_name() to get the slot's
551 void pci_hp_destroy(struct hotplug_slot *slot)
553 	struct pci_slot *pci_slot = slot->pci_slot;
555 	slot->pci_slot = NULL;