drivers/pci/slot.c

21 	struct pci_slot *slot = to_pci_slot(kobj);
23 	return attribute->show ? attribute->show(slot, buf) : -EIO;
29 	struct pci_slot *slot = to_pci_slot(kobj);
31 	return attribute->store ? attribute->store(slot, buf, len) : -EIO;
39 static ssize_t address_read_file(struct pci_slot *slot, char *buf)
41 	if (slot->number == 0xff)
43 				  pci_domain_nr(slot->bus),
44 				  slot->bus->number);
47 			  pci_domain_nr(slot->bus),
48 			  slot->bus->number,
49 			  slot->number);
57 static ssize_t max_speed_read_file(struct pci_slot *slot, char *buf)
59 	return bus_speed_read(slot->bus->max_bus_speed, buf);
62 static ssize_t cur_speed_read_file(struct pci_slot *slot, char *buf)
64 	return bus_speed_read(slot->bus->cur_bus_speed, buf);
70 	struct pci_slot *slot = to_pci_slot(kobj);
72 	dev_dbg(&slot->bus->dev, "dev %02x, released physical slot %s\n",
73 		slot->number, pci_slot_name(slot));
76 	list_for_each_entry(dev, &slot->bus->devices, bus_list)
77 		if (PCI_SLOT(dev->devfn) == slot->number)
78 			dev->slot = NULL;
81 	list_del(&slot->list);
83 	kfree(slot);
145 static int rename_slot(struct pci_slot *slot, const char *name)
150 	if (strcmp(pci_slot_name(slot), name) == 0)
157 	result = kobject_rename(&slot->kobj, slot_name);
165 	struct pci_slot *slot;
168 	list_for_each_entry(slot, &dev->bus->slots, list)
169 		if (PCI_SLOT(dev->devfn) == slot->number)
170 			dev->slot = slot;
176 	struct pci_slot *slot;
179 	list_for_each_entry(slot, &parent->slots, list)
180 		if (slot->number == slot_nr) {
181 			kobject_get(&slot->kobj);
182 			return slot;
189  * pci_create_slot - create or increment refcount for physical PCI slot
207  * The first slot is assigned N
208  * The second slot is assigned N-1
209  * The third slot is assigned N-2
214  * a slot. There is one notable exception - pSeries (rpaphp), where the
216  * the slot. In this scenario, the caller may pass -1 for @slot_nr.
224  * the 'placeholder' slot will not be displayed.
231 	struct pci_slot *slot;
241 	 * Hotplug drivers are allowed to rename an existing slot,
244 	slot = get_slot(parent, slot_nr);
245 	if (slot) {
247 			if ((err = slot->hotplug ? -EBUSY : 0)
248 			     || (err = rename_slot(slot, name))) {
249 				kobject_put(&slot->kobj);
250 				slot = NULL;
258 	slot = kzalloc(sizeof(*slot), GFP_KERNEL);
259 	if (!slot) {
264 	slot->bus = parent;
265 	slot->number = slot_nr;
267 	slot->kobj.kset = pci_slots_kset;
272 		kfree(slot);
276 	INIT_LIST_HEAD(&slot->list);
277 	list_add(&slot->list, &parent->slots);
279 	err = kobject_init_and_add(&slot->kobj, &pci_slot_ktype, NULL,
282 		kobject_put(&slot->kobj);
289 			dev->slot = slot;
292 	dev_dbg(&parent->dev, "dev %02x, created physical slot %s\n",
293 		slot_nr, pci_slot_name(slot));
298 	return slot;
300 	slot = ERR_PTR(err);
306  * pci_destroy_slot - decrement refcount for physical PCI slot
307  * @slot: struct pci_slot to decrement
313 void pci_destroy_slot(struct pci_slot *slot)
315 	dev_dbg(&slot->bus->dev, "dev %02x, dec refcount to %d\n",
316 		slot->number, kref_read(&slot->kobj.kref) - 1);
319 	kobject_put(&slot->kobj);
335 	struct hotplug_slot *slot = pci_slot->hotplug;
339 	if (!slot || !slot->ops)
341 	kobj = kset_find_obj(module_kset, slot->mod_name);