Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* |
2 | * drivers/pci/pci-driver.c | |
3 | * | |
4 | */ | |
5 | ||
6 | #include <linux/pci.h> | |
7 | #include <linux/module.h> | |
8 | #include <linux/init.h> | |
9 | #include <linux/device.h> | |
d42c6997 | 10 | #include <linux/mempolicy.h> |
4e57b681 TS |
11 | #include <linux/string.h> |
12 | #include <linux/slab.h> | |
8c65b4a6 | 13 | #include <linux/sched.h> |
1da177e4 LT |
14 | #include "pci.h" |
15 | ||
16 | /* | |
17 | * Registration of PCI drivers and handling of hot-pluggable devices. | |
18 | */ | |
19 | ||
0f397f86 GKH |
20 | /* multithreaded probe logic */ |
21 | static int pci_multithread_probe = | |
22 | #ifdef CONFIG_PCI_MULTITHREAD_PROBE | |
23 | 1; | |
24 | #else | |
25 | 0; | |
26 | #endif | |
27 | __module_param_call("", pci_multithread_probe, param_set_bool, param_get_bool, &pci_multithread_probe, 0644); | |
28 | ||
29 | ||
1da177e4 LT |
30 | /* |
31 | * Dynamic device IDs are disabled for !CONFIG_HOTPLUG | |
32 | */ | |
33 | ||
75865858 GKH |
34 | struct pci_dynid { |
35 | struct list_head node; | |
36 | struct pci_device_id id; | |
37 | }; | |
1da177e4 | 38 | |
3d3c2ae1 GK |
39 | #ifdef CONFIG_HOTPLUG |
40 | ||
1da177e4 | 41 | /** |
8f7020d3 RD |
42 | * store_new_id - add a new PCI device ID to this driver and re-probe devices |
43 | * @driver: target device driver | |
44 | * @buf: buffer for scanning device ID data | |
45 | * @count: input size | |
1da177e4 LT |
46 | * |
47 | * Adds a new dynamic pci device ID to this driver, | |
48 | * and causes the driver to probe for all devices again. | |
49 | */ | |
f8eb1005 | 50 | static ssize_t |
1da177e4 LT |
51 | store_new_id(struct device_driver *driver, const char *buf, size_t count) |
52 | { | |
75865858 | 53 | struct pci_dynid *dynid; |
1da177e4 LT |
54 | struct pci_driver *pdrv = to_pci_driver(driver); |
55 | __u32 vendor=PCI_ANY_ID, device=PCI_ANY_ID, subvendor=PCI_ANY_ID, | |
56 | subdevice=PCI_ANY_ID, class=0, class_mask=0; | |
57 | unsigned long driver_data=0; | |
58 | int fields=0; | |
b19441af | 59 | int retval = 0; |
1da177e4 LT |
60 | |
61 | fields = sscanf(buf, "%x %x %x %x %x %x %lux", | |
62 | &vendor, &device, &subvendor, &subdevice, | |
63 | &class, &class_mask, &driver_data); | |
64 | if (fields < 0) | |
65 | return -EINVAL; | |
66 | ||
f5afe806 | 67 | dynid = kzalloc(sizeof(*dynid), GFP_KERNEL); |
1da177e4 LT |
68 | if (!dynid) |
69 | return -ENOMEM; | |
70 | ||
1da177e4 LT |
71 | INIT_LIST_HEAD(&dynid->node); |
72 | dynid->id.vendor = vendor; | |
73 | dynid->id.device = device; | |
74 | dynid->id.subvendor = subvendor; | |
75 | dynid->id.subdevice = subdevice; | |
76 | dynid->id.class = class; | |
77 | dynid->id.class_mask = class_mask; | |
78 | dynid->id.driver_data = pdrv->dynids.use_driver_data ? | |
79 | driver_data : 0UL; | |
80 | ||
81 | spin_lock(&pdrv->dynids.lock); | |
82 | list_add_tail(&pdrv->dynids.list, &dynid->node); | |
83 | spin_unlock(&pdrv->dynids.lock); | |
84 | ||
75865858 | 85 | if (get_driver(&pdrv->driver)) { |
b19441af | 86 | retval = driver_attach(&pdrv->driver); |
75865858 | 87 | put_driver(&pdrv->driver); |
1da177e4 LT |
88 | } |
89 | ||
b19441af GKH |
90 | if (retval) |
91 | return retval; | |
1da177e4 LT |
92 | return count; |
93 | } | |
1da177e4 | 94 | static DRIVER_ATTR(new_id, S_IWUSR, NULL, store_new_id); |
1da177e4 LT |
95 | |
96 | static void | |
97 | pci_free_dynids(struct pci_driver *drv) | |
98 | { | |
75865858 | 99 | struct pci_dynid *dynid, *n; |
1da177e4 LT |
100 | |
101 | spin_lock(&drv->dynids.lock); | |
75865858 | 102 | list_for_each_entry_safe(dynid, n, &drv->dynids.list, node) { |
1da177e4 LT |
103 | list_del(&dynid->node); |
104 | kfree(dynid); | |
105 | } | |
106 | spin_unlock(&drv->dynids.lock); | |
107 | } | |
108 | ||
109 | static int | |
110 | pci_create_newid_file(struct pci_driver *drv) | |
111 | { | |
112 | int error = 0; | |
113 | if (drv->probe != NULL) | |
114 | error = sysfs_create_file(&drv->driver.kobj, | |
115 | &driver_attr_new_id.attr); | |
116 | return error; | |
117 | } | |
118 | ||
1da177e4 | 119 | #else /* !CONFIG_HOTPLUG */ |
1da177e4 LT |
120 | static inline void pci_free_dynids(struct pci_driver *drv) {} |
121 | static inline int pci_create_newid_file(struct pci_driver *drv) | |
122 | { | |
123 | return 0; | |
124 | } | |
1da177e4 LT |
125 | #endif |
126 | ||
127 | /** | |
75865858 | 128 | * pci_match_id - See if a pci device matches a given pci_id table |
1da177e4 | 129 | * @ids: array of PCI device id structures to search in |
75865858 GKH |
130 | * @dev: the PCI device structure to match against. |
131 | * | |
1da177e4 | 132 | * Used by a driver to check whether a PCI device present in the |
75865858 | 133 | * system is in its list of supported devices. Returns the matching |
1da177e4 | 134 | * pci_device_id structure or %NULL if there is no match. |
75865858 GKH |
135 | * |
136 | * Depreciated, don't use this as it will not catch any dynamic ids | |
137 | * that a driver might want to check for. | |
1da177e4 | 138 | */ |
75865858 GKH |
139 | const struct pci_device_id *pci_match_id(const struct pci_device_id *ids, |
140 | struct pci_dev *dev) | |
1da177e4 | 141 | { |
75865858 GKH |
142 | if (ids) { |
143 | while (ids->vendor || ids->subvendor || ids->class_mask) { | |
144 | if (pci_match_one_device(ids, dev)) | |
145 | return ids; | |
146 | ids++; | |
147 | } | |
1da177e4 LT |
148 | } |
149 | return NULL; | |
150 | } | |
151 | ||
152 | /** | |
75865858 GKH |
153 | * pci_match_device - Tell if a PCI device structure has a matching |
154 | * PCI device id structure | |
75865858 | 155 | * @drv: the PCI driver to match against |
39ba487f | 156 | * @dev: the PCI device structure to match against |
75865858 GKH |
157 | * |
158 | * Used by a driver to check whether a PCI device present in the | |
159 | * system is in its list of supported devices. Returns the matching | |
160 | * pci_device_id structure or %NULL if there is no match. | |
1da177e4 | 161 | */ |
75865858 GKH |
162 | const struct pci_device_id *pci_match_device(struct pci_driver *drv, |
163 | struct pci_dev *dev) | |
164 | { | |
75865858 | 165 | struct pci_dynid *dynid; |
1da177e4 | 166 | |
7461b60a | 167 | /* Look at the dynamic ids first, before the static ones */ |
75865858 GKH |
168 | spin_lock(&drv->dynids.lock); |
169 | list_for_each_entry(dynid, &drv->dynids.list, node) { | |
170 | if (pci_match_one_device(&dynid->id, dev)) { | |
171 | spin_unlock(&drv->dynids.lock); | |
172 | return &dynid->id; | |
173 | } | |
1da177e4 | 174 | } |
75865858 | 175 | spin_unlock(&drv->dynids.lock); |
7461b60a RK |
176 | |
177 | return pci_match_id(drv->id_table, dev); | |
1da177e4 LT |
178 | } |
179 | ||
d42c6997 AK |
180 | static int pci_call_probe(struct pci_driver *drv, struct pci_dev *dev, |
181 | const struct pci_device_id *id) | |
182 | { | |
183 | int error; | |
184 | #ifdef CONFIG_NUMA | |
185 | /* Execute driver initialization on node where the | |
186 | device's bus is attached to. This way the driver likely | |
187 | allocates its local memory on the right node without | |
188 | any need to change it. */ | |
189 | struct mempolicy *oldpol; | |
190 | cpumask_t oldmask = current->cpus_allowed; | |
191 | int node = pcibus_to_node(dev->bus); | |
192 | if (node >= 0 && node_online(node)) | |
193 | set_cpus_allowed(current, node_to_cpumask(node)); | |
194 | /* And set default memory allocation policy */ | |
195 | oldpol = current->mempolicy; | |
196 | current->mempolicy = &default_policy; | |
197 | mpol_get(current->mempolicy); | |
198 | #endif | |
199 | error = drv->probe(dev, id); | |
200 | #ifdef CONFIG_NUMA | |
201 | set_cpus_allowed(current, oldmask); | |
202 | mpol_free(current->mempolicy); | |
203 | current->mempolicy = oldpol; | |
204 | #endif | |
205 | return error; | |
206 | } | |
207 | ||
1da177e4 LT |
208 | /** |
209 | * __pci_device_probe() | |
8f7020d3 RD |
210 | * @drv: driver to call to check if it wants the PCI device |
211 | * @pci_dev: PCI device being probed | |
1da177e4 | 212 | * |
8f7020d3 | 213 | * returns 0 on success, else error. |
1da177e4 LT |
214 | * side-effect: pci_dev->driver is set to drv when drv claims pci_dev. |
215 | */ | |
216 | static int | |
217 | __pci_device_probe(struct pci_driver *drv, struct pci_dev *pci_dev) | |
75865858 GKH |
218 | { |
219 | const struct pci_device_id *id; | |
1da177e4 LT |
220 | int error = 0; |
221 | ||
222 | if (!pci_dev->driver && drv->probe) { | |
75865858 GKH |
223 | error = -ENODEV; |
224 | ||
225 | id = pci_match_device(drv, pci_dev); | |
226 | if (id) | |
d42c6997 | 227 | error = pci_call_probe(drv, pci_dev, id); |
75865858 GKH |
228 | if (error >= 0) { |
229 | pci_dev->driver = drv; | |
230 | error = 0; | |
231 | } | |
1da177e4 LT |
232 | } |
233 | return error; | |
234 | } | |
235 | ||
236 | static int pci_device_probe(struct device * dev) | |
237 | { | |
238 | int error = 0; | |
239 | struct pci_driver *drv; | |
240 | struct pci_dev *pci_dev; | |
241 | ||
242 | drv = to_pci_driver(dev->driver); | |
243 | pci_dev = to_pci_dev(dev); | |
244 | pci_dev_get(pci_dev); | |
245 | error = __pci_device_probe(drv, pci_dev); | |
246 | if (error) | |
247 | pci_dev_put(pci_dev); | |
248 | ||
249 | return error; | |
250 | } | |
251 | ||
252 | static int pci_device_remove(struct device * dev) | |
253 | { | |
254 | struct pci_dev * pci_dev = to_pci_dev(dev); | |
255 | struct pci_driver * drv = pci_dev->driver; | |
256 | ||
257 | if (drv) { | |
258 | if (drv->remove) | |
259 | drv->remove(pci_dev); | |
260 | pci_dev->driver = NULL; | |
261 | } | |
262 | ||
2449e06a SL |
263 | /* |
264 | * If the device is still on, set the power state as "unknown", | |
265 | * since it might change by the next time we load the driver. | |
266 | */ | |
267 | if (pci_dev->current_state == PCI_D0) | |
268 | pci_dev->current_state = PCI_UNKNOWN; | |
269 | ||
1da177e4 LT |
270 | /* |
271 | * We would love to complain here if pci_dev->is_enabled is set, that | |
272 | * the driver should have called pci_disable_device(), but the | |
273 | * unfortunate fact is there are too many odd BIOS and bridge setups | |
274 | * that don't like drivers doing that all of the time. | |
275 | * Oh well, we can dream of sane hardware when we sleep, no matter how | |
276 | * horrible the crap we have to deal with is when we are awake... | |
277 | */ | |
278 | ||
279 | pci_dev_put(pci_dev); | |
280 | return 0; | |
281 | } | |
282 | ||
283 | static int pci_device_suspend(struct device * dev, pm_message_t state) | |
284 | { | |
285 | struct pci_dev * pci_dev = to_pci_dev(dev); | |
286 | struct pci_driver * drv = pci_dev->driver; | |
287 | int i = 0; | |
288 | ||
02669492 | 289 | if (drv && drv->suspend) { |
1da177e4 | 290 | i = drv->suspend(pci_dev, state); |
02669492 AM |
291 | suspend_report_result(drv->suspend, i); |
292 | } else { | |
1da177e4 | 293 | pci_save_state(pci_dev); |
2449e06a SL |
294 | /* |
295 | * mark its power state as "unknown", since we don't know if | |
296 | * e.g. the BIOS will change its device state when we suspend. | |
297 | */ | |
298 | if (pci_dev->current_state == PCI_D0) | |
299 | pci_dev->current_state = PCI_UNKNOWN; | |
02669492 | 300 | } |
1da177e4 LT |
301 | return i; |
302 | } | |
303 | ||
cbd69dbb LT |
304 | static int pci_device_suspend_late(struct device * dev, pm_message_t state) |
305 | { | |
306 | struct pci_dev * pci_dev = to_pci_dev(dev); | |
307 | struct pci_driver * drv = pci_dev->driver; | |
308 | int i = 0; | |
309 | ||
310 | if (drv && drv->suspend_late) { | |
311 | i = drv->suspend_late(pci_dev, state); | |
312 | suspend_report_result(drv->suspend_late, i); | |
313 | } | |
314 | return i; | |
315 | } | |
1da177e4 | 316 | |
95a62965 | 317 | /* |
1da177e4 LT |
318 | * Default resume method for devices that have no driver provided resume, |
319 | * or not even a driver at all. | |
320 | */ | |
8d92bc22 | 321 | static int pci_default_resume(struct pci_dev *pci_dev) |
1da177e4 | 322 | { |
8d92bc22 | 323 | int retval = 0; |
95a62965 | 324 | |
1da177e4 LT |
325 | /* restore the PCI config space */ |
326 | pci_restore_state(pci_dev); | |
327 | /* if the device was enabled before suspend, reenable */ | |
bae94d02 IPG |
328 | if (atomic_read(&pci_dev->enable_cnt)) |
329 | retval = __pci_enable_device(pci_dev); | |
1da177e4 LT |
330 | /* if the device was busmaster before the suspend, make it busmaster again */ |
331 | if (pci_dev->is_busmaster) | |
332 | pci_set_master(pci_dev); | |
8d92bc22 JD |
333 | |
334 | return retval; | |
1da177e4 LT |
335 | } |
336 | ||
337 | static int pci_device_resume(struct device * dev) | |
338 | { | |
8d92bc22 | 339 | int error; |
1da177e4 LT |
340 | struct pci_dev * pci_dev = to_pci_dev(dev); |
341 | struct pci_driver * drv = pci_dev->driver; | |
342 | ||
343 | if (drv && drv->resume) | |
8d92bc22 | 344 | error = drv->resume(pci_dev); |
1da177e4 | 345 | else |
8d92bc22 JD |
346 | error = pci_default_resume(pci_dev); |
347 | return error; | |
1da177e4 LT |
348 | } |
349 | ||
cbd69dbb LT |
350 | static int pci_device_resume_early(struct device * dev) |
351 | { | |
352 | int error = 0; | |
353 | struct pci_dev * pci_dev = to_pci_dev(dev); | |
354 | struct pci_driver * drv = pci_dev->driver; | |
355 | ||
356 | if (drv && drv->resume_early) | |
357 | error = drv->resume_early(pci_dev); | |
358 | return error; | |
359 | } | |
360 | ||
c8958177 GK |
361 | static void pci_device_shutdown(struct device *dev) |
362 | { | |
363 | struct pci_dev *pci_dev = to_pci_dev(dev); | |
364 | struct pci_driver *drv = pci_dev->driver; | |
365 | ||
366 | if (drv && drv->shutdown) | |
367 | drv->shutdown(pci_dev); | |
368 | } | |
1da177e4 LT |
369 | |
370 | #define kobj_to_pci_driver(obj) container_of(obj, struct device_driver, kobj) | |
371 | #define attr_to_driver_attribute(obj) container_of(obj, struct driver_attribute, attr) | |
372 | ||
373 | static ssize_t | |
374 | pci_driver_attr_show(struct kobject * kobj, struct attribute *attr, char *buf) | |
375 | { | |
376 | struct device_driver *driver = kobj_to_pci_driver(kobj); | |
377 | struct driver_attribute *dattr = attr_to_driver_attribute(attr); | |
fc7e4828 | 378 | ssize_t ret; |
1da177e4 | 379 | |
fc7e4828 DT |
380 | if (!get_driver(driver)) |
381 | return -ENODEV; | |
382 | ||
383 | ret = dattr->show ? dattr->show(driver, buf) : -EIO; | |
384 | ||
385 | put_driver(driver); | |
1da177e4 LT |
386 | return ret; |
387 | } | |
388 | ||
389 | static ssize_t | |
390 | pci_driver_attr_store(struct kobject * kobj, struct attribute *attr, | |
391 | const char *buf, size_t count) | |
392 | { | |
393 | struct device_driver *driver = kobj_to_pci_driver(kobj); | |
394 | struct driver_attribute *dattr = attr_to_driver_attribute(attr); | |
fc7e4828 | 395 | ssize_t ret; |
1da177e4 | 396 | |
fc7e4828 DT |
397 | if (!get_driver(driver)) |
398 | return -ENODEV; | |
399 | ||
400 | ret = dattr->store ? dattr->store(driver, buf, count) : -EIO; | |
401 | ||
402 | put_driver(driver); | |
1da177e4 LT |
403 | return ret; |
404 | } | |
405 | ||
406 | static struct sysfs_ops pci_driver_sysfs_ops = { | |
407 | .show = pci_driver_attr_show, | |
408 | .store = pci_driver_attr_store, | |
409 | }; | |
410 | static struct kobj_type pci_driver_kobj_type = { | |
411 | .sysfs_ops = &pci_driver_sysfs_ops, | |
412 | }; | |
413 | ||
1da177e4 | 414 | /** |
863b18f4 | 415 | * __pci_register_driver - register a new pci driver |
1da177e4 | 416 | * @drv: the driver structure to register |
863b18f4 | 417 | * @owner: owner module of drv |
1da177e4 LT |
418 | * |
419 | * Adds the driver structure to the list of registered drivers. | |
420 | * Returns a negative value on error, otherwise 0. | |
eaae4b3a | 421 | * If no error occurred, the driver remains registered even if |
1da177e4 LT |
422 | * no device was claimed during registration. |
423 | */ | |
863b18f4 | 424 | int __pci_register_driver(struct pci_driver *drv, struct module *owner) |
1da177e4 LT |
425 | { |
426 | int error; | |
427 | ||
428 | /* initialize common driver fields */ | |
429 | drv->driver.name = drv->name; | |
430 | drv->driver.bus = &pci_bus_type; | |
863b18f4 | 431 | drv->driver.owner = owner; |
1da177e4 | 432 | drv->driver.kobj.ktype = &pci_driver_kobj_type; |
50b00755 AC |
433 | |
434 | if (pci_multithread_probe) | |
435 | drv->driver.multithread_probe = pci_multithread_probe; | |
436 | else | |
437 | drv->driver.multithread_probe = drv->multithread_probe; | |
75865858 GKH |
438 | |
439 | spin_lock_init(&drv->dynids.lock); | |
440 | INIT_LIST_HEAD(&drv->dynids.list); | |
1da177e4 LT |
441 | |
442 | /* register with core */ | |
443 | error = driver_register(&drv->driver); | |
50bf14b3 AM |
444 | if (error) |
445 | return error; | |
1da177e4 | 446 | |
50bf14b3 AM |
447 | error = pci_create_newid_file(drv); |
448 | if (error) | |
449 | driver_unregister(&drv->driver); | |
1da177e4 LT |
450 | |
451 | return error; | |
452 | } | |
453 | ||
454 | /** | |
455 | * pci_unregister_driver - unregister a pci driver | |
456 | * @drv: the driver structure to unregister | |
457 | * | |
458 | * Deletes the driver structure from the list of registered PCI drivers, | |
459 | * gives it a chance to clean up by calling its remove() function for | |
460 | * each device it was responsible for, and marks those devices as | |
461 | * driverless. | |
462 | */ | |
463 | ||
464 | void | |
465 | pci_unregister_driver(struct pci_driver *drv) | |
466 | { | |
467 | driver_unregister(&drv->driver); | |
468 | pci_free_dynids(drv); | |
469 | } | |
470 | ||
471 | static struct pci_driver pci_compat_driver = { | |
472 | .name = "compat" | |
473 | }; | |
474 | ||
475 | /** | |
476 | * pci_dev_driver - get the pci_driver of a device | |
477 | * @dev: the device to query | |
478 | * | |
479 | * Returns the appropriate pci_driver structure or %NULL if there is no | |
480 | * registered driver for the device. | |
481 | */ | |
482 | struct pci_driver * | |
483 | pci_dev_driver(const struct pci_dev *dev) | |
484 | { | |
485 | if (dev->driver) | |
486 | return dev->driver; | |
487 | else { | |
488 | int i; | |
489 | for(i=0; i<=PCI_ROM_RESOURCE; i++) | |
490 | if (dev->resource[i].flags & IORESOURCE_BUSY) | |
491 | return &pci_compat_driver; | |
492 | } | |
493 | return NULL; | |
494 | } | |
495 | ||
496 | /** | |
497 | * pci_bus_match - Tell if a PCI device structure has a matching PCI device id structure | |
1da177e4 | 498 | * @dev: the PCI device structure to match against |
8f7020d3 | 499 | * @drv: the device driver to search for matching PCI device id structures |
1da177e4 LT |
500 | * |
501 | * Used by a driver to check whether a PCI device present in the | |
8f7020d3 | 502 | * system is in its list of supported devices. Returns the matching |
1da177e4 LT |
503 | * pci_device_id structure or %NULL if there is no match. |
504 | */ | |
75865858 | 505 | static int pci_bus_match(struct device *dev, struct device_driver *drv) |
1da177e4 | 506 | { |
75865858 GKH |
507 | struct pci_dev *pci_dev = to_pci_dev(dev); |
508 | struct pci_driver *pci_drv = to_pci_driver(drv); | |
1da177e4 LT |
509 | const struct pci_device_id *found_id; |
510 | ||
75865858 | 511 | found_id = pci_match_device(pci_drv, pci_dev); |
1da177e4 LT |
512 | if (found_id) |
513 | return 1; | |
514 | ||
75865858 | 515 | return 0; |
1da177e4 LT |
516 | } |
517 | ||
518 | /** | |
519 | * pci_dev_get - increments the reference count of the pci device structure | |
520 | * @dev: the device being referenced | |
521 | * | |
522 | * Each live reference to a device should be refcounted. | |
523 | * | |
524 | * Drivers for PCI devices should normally record such references in | |
525 | * their probe() methods, when they bind to a device, and release | |
526 | * them by calling pci_dev_put(), in their disconnect() methods. | |
527 | * | |
528 | * A pointer to the device with the incremented reference counter is returned. | |
529 | */ | |
530 | struct pci_dev *pci_dev_get(struct pci_dev *dev) | |
531 | { | |
532 | if (dev) | |
533 | get_device(&dev->dev); | |
534 | return dev; | |
535 | } | |
536 | ||
537 | /** | |
538 | * pci_dev_put - release a use of the pci device structure | |
539 | * @dev: device that's been disconnected | |
540 | * | |
541 | * Must be called when a user of a device is finished with it. When the last | |
542 | * user of the device calls this function, the memory of the device is freed. | |
543 | */ | |
544 | void pci_dev_put(struct pci_dev *dev) | |
545 | { | |
546 | if (dev) | |
547 | put_device(&dev->dev); | |
548 | } | |
549 | ||
550 | #ifndef CONFIG_HOTPLUG | |
312c004d KS |
551 | int pci_uevent(struct device *dev, char **envp, int num_envp, |
552 | char *buffer, int buffer_size) | |
1da177e4 LT |
553 | { |
554 | return -ENODEV; | |
555 | } | |
556 | #endif | |
557 | ||
558 | struct bus_type pci_bus_type = { | |
559 | .name = "pci", | |
560 | .match = pci_bus_match, | |
312c004d | 561 | .uevent = pci_uevent, |
b15d686a RK |
562 | .probe = pci_device_probe, |
563 | .remove = pci_device_remove, | |
1da177e4 | 564 | .suspend = pci_device_suspend, |
cbd69dbb LT |
565 | .suspend_late = pci_device_suspend_late, |
566 | .resume_early = pci_device_resume_early, | |
1da177e4 | 567 | .resume = pci_device_resume, |
cbd69dbb | 568 | .shutdown = pci_device_shutdown, |
1da177e4 LT |
569 | .dev_attrs = pci_dev_attrs, |
570 | }; | |
571 | ||
572 | static int __init pci_driver_init(void) | |
573 | { | |
574 | return bus_register(&pci_bus_type); | |
575 | } | |
576 | ||
577 | postcore_initcall(pci_driver_init); | |
578 | ||
75865858 | 579 | EXPORT_SYMBOL(pci_match_id); |
1da177e4 | 580 | EXPORT_SYMBOL(pci_match_device); |
863b18f4 | 581 | EXPORT_SYMBOL(__pci_register_driver); |
1da177e4 LT |
582 | EXPORT_SYMBOL(pci_unregister_driver); |
583 | EXPORT_SYMBOL(pci_dev_driver); | |
584 | EXPORT_SYMBOL(pci_bus_type); | |
585 | EXPORT_SYMBOL(pci_dev_get); | |
586 | EXPORT_SYMBOL(pci_dev_put); |