2 * drivers/pci/pci-driver.c
4 * (C) Copyright 2002-2004, 2007 Greg Kroah-Hartman <greg@kroah.com>
5 * (C) Copyright 2007 Novell Inc.
7 * Released under the GPL v2 only.
11 #include <linux/pci.h>
12 #include <linux/module.h>
13 #include <linux/init.h>
14 #include <linux/device.h>
15 #include <linux/mempolicy.h>
16 #include <linux/string.h>
17 #include <linux/slab.h>
18 #include <linux/sched.h>
19 #include <linux/cpu.h>
23 * Dynamic device IDs are disabled for !CONFIG_HOTPLUG
27 struct list_head node;
28 struct pci_device_id id;
34 * store_new_id - add a new PCI device ID to this driver and re-probe devices
35 * @driver: target device driver
36 * @buf: buffer for scanning device ID data
39 * Adds a new dynamic pci device ID to this driver,
40 * and causes the driver to probe for all devices again.
43 store_new_id(struct device_driver *driver, const char *buf, size_t count)
45 struct pci_dynid *dynid;
46 struct pci_driver *pdrv = to_pci_driver(driver);
47 const struct pci_device_id *ids = pdrv->id_table;
48 __u32 vendor, device, subvendor=PCI_ANY_ID,
49 subdevice=PCI_ANY_ID, class=0, class_mask=0;
50 unsigned long driver_data=0;
54 fields = sscanf(buf, "%x %x %x %x %x %x %lx",
55 &vendor, &device, &subvendor, &subdevice,
56 &class, &class_mask, &driver_data);
60 /* Only accept driver_data values that match an existing id_table
64 while (ids->vendor || ids->subvendor || ids->class_mask) {
65 if (driver_data == ids->driver_data) {
71 if (retval) /* No match */
75 dynid = kzalloc(sizeof(*dynid), GFP_KERNEL);
79 dynid->id.vendor = vendor;
80 dynid->id.device = device;
81 dynid->id.subvendor = subvendor;
82 dynid->id.subdevice = subdevice;
83 dynid->id.class = class;
84 dynid->id.class_mask = class_mask;
85 dynid->id.driver_data = driver_data;
87 spin_lock(&pdrv->dynids.lock);
88 list_add_tail(&dynid->node, &pdrv->dynids.list);
89 spin_unlock(&pdrv->dynids.lock);
91 if (get_driver(&pdrv->driver)) {
92 retval = driver_attach(&pdrv->driver);
93 put_driver(&pdrv->driver);
100 static DRIVER_ATTR(new_id, S_IWUSR, NULL, store_new_id);
103 pci_free_dynids(struct pci_driver *drv)
105 struct pci_dynid *dynid, *n;
107 spin_lock(&drv->dynids.lock);
108 list_for_each_entry_safe(dynid, n, &drv->dynids.list, node) {
109 list_del(&dynid->node);
112 spin_unlock(&drv->dynids.lock);
116 pci_create_newid_file(struct pci_driver *drv)
119 if (drv->probe != NULL)
120 error = driver_create_file(&drv->driver, &driver_attr_new_id);
124 static void pci_remove_newid_file(struct pci_driver *drv)
126 driver_remove_file(&drv->driver, &driver_attr_new_id);
128 #else /* !CONFIG_HOTPLUG */
129 static inline void pci_free_dynids(struct pci_driver *drv) {}
130 static inline int pci_create_newid_file(struct pci_driver *drv)
134 static inline void pci_remove_newid_file(struct pci_driver *drv) {}
138 * pci_match_id - See if a pci device matches a given pci_id table
139 * @ids: array of PCI device id structures to search in
140 * @dev: the PCI device structure to match against.
142 * Used by a driver to check whether a PCI device present in the
143 * system is in its list of supported devices. Returns the matching
144 * pci_device_id structure or %NULL if there is no match.
146 * Deprecated, don't use this as it will not catch any dynamic ids
147 * that a driver might want to check for.
149 const struct pci_device_id *pci_match_id(const struct pci_device_id *ids,
153 while (ids->vendor || ids->subvendor || ids->class_mask) {
154 if (pci_match_one_device(ids, dev))
163 * pci_match_device - Tell if a PCI device structure has a matching PCI device id structure
164 * @drv: the PCI driver to match against
165 * @dev: the PCI device structure to match against
167 * Used by a driver to check whether a PCI device present in the
168 * system is in its list of supported devices. Returns the matching
169 * pci_device_id structure or %NULL if there is no match.
171 static const struct pci_device_id *pci_match_device(struct pci_driver *drv,
174 struct pci_dynid *dynid;
176 /* Look at the dynamic ids first, before the static ones */
177 spin_lock(&drv->dynids.lock);
178 list_for_each_entry(dynid, &drv->dynids.list, node) {
179 if (pci_match_one_device(&dynid->id, dev)) {
180 spin_unlock(&drv->dynids.lock);
184 spin_unlock(&drv->dynids.lock);
186 return pci_match_id(drv->id_table, dev);
189 struct drv_dev_and_id {
190 struct pci_driver *drv;
192 const struct pci_device_id *id;
195 static long local_pci_probe(void *_ddi)
197 struct drv_dev_and_id *ddi = _ddi;
199 return ddi->drv->probe(ddi->dev, ddi->id);
202 static int pci_call_probe(struct pci_driver *drv, struct pci_dev *dev,
203 const struct pci_device_id *id)
206 struct drv_dev_and_id ddi = { drv, dev, id };
208 /* Execute driver initialization on node where the device's
209 bus is attached to. This way the driver likely allocates
210 its local memory on the right node without any need to
212 node = dev_to_node(&dev->dev);
215 node_to_cpumask_ptr(nodecpumask, node);
218 cpu = cpumask_any_and(nodecpumask, cpu_online_mask);
219 if (cpu < nr_cpu_ids)
220 error = work_on_cpu(cpu, local_pci_probe, &ddi);
222 error = local_pci_probe(&ddi);
225 error = local_pci_probe(&ddi);
230 * __pci_device_probe()
231 * @drv: driver to call to check if it wants the PCI device
232 * @pci_dev: PCI device being probed
234 * returns 0 on success, else error.
235 * side-effect: pci_dev->driver is set to drv when drv claims pci_dev.
238 __pci_device_probe(struct pci_driver *drv, struct pci_dev *pci_dev)
240 const struct pci_device_id *id;
243 if (!pci_dev->driver && drv->probe) {
246 id = pci_match_device(drv, pci_dev);
248 error = pci_call_probe(drv, pci_dev, id);
250 pci_dev->driver = drv;
257 static int pci_device_probe(struct device * dev)
260 struct pci_driver *drv;
261 struct pci_dev *pci_dev;
263 drv = to_pci_driver(dev->driver);
264 pci_dev = to_pci_dev(dev);
265 pci_dev_get(pci_dev);
266 error = __pci_device_probe(drv, pci_dev);
268 pci_dev_put(pci_dev);
273 static int pci_device_remove(struct device * dev)
275 struct pci_dev * pci_dev = to_pci_dev(dev);
276 struct pci_driver * drv = pci_dev->driver;
280 drv->remove(pci_dev);
281 pci_dev->driver = NULL;
285 * If the device is still on, set the power state as "unknown",
286 * since it might change by the next time we load the driver.
288 if (pci_dev->current_state == PCI_D0)
289 pci_dev->current_state = PCI_UNKNOWN;
292 * We would love to complain here if pci_dev->is_enabled is set, that
293 * the driver should have called pci_disable_device(), but the
294 * unfortunate fact is there are too many odd BIOS and bridge setups
295 * that don't like drivers doing that all of the time.
296 * Oh well, we can dream of sane hardware when we sleep, no matter how
297 * horrible the crap we have to deal with is when we are awake...
300 pci_dev_put(pci_dev);
304 static void pci_device_shutdown(struct device *dev)
306 struct pci_dev *pci_dev = to_pci_dev(dev);
307 struct pci_driver *drv = pci_dev->driver;
309 if (drv && drv->shutdown)
310 drv->shutdown(pci_dev);
311 pci_msi_shutdown(pci_dev);
312 pci_msix_shutdown(pci_dev);
315 #ifdef CONFIG_PM_SLEEP
318 * Default "suspend" method for devices that have no driver provided suspend,
319 * or not even a driver at all (second part).
321 static void pci_pm_set_unknown_state(struct pci_dev *pci_dev)
324 * mark its power state as "unknown", since we don't know if
325 * e.g. the BIOS will change its device state when we suspend.
327 if (pci_dev->current_state == PCI_D0)
328 pci_dev->current_state = PCI_UNKNOWN;
332 * Default "resume" method for devices that have no driver provided resume,
333 * or not even a driver at all (second part).
335 static int pci_pm_reenable_device(struct pci_dev *pci_dev)
339 /* if the device was enabled before suspend, reenable */
340 retval = pci_reenable_device(pci_dev);
342 * if the device was busmaster before the suspend, make it busmaster
345 if (pci_dev->is_busmaster)
346 pci_set_master(pci_dev);
351 static int pci_legacy_suspend(struct device *dev, pm_message_t state)
353 struct pci_dev * pci_dev = to_pci_dev(dev);
354 struct pci_driver * drv = pci_dev->driver;
357 if (drv && drv->suspend) {
358 pci_power_t prev = pci_dev->current_state;
360 pci_dev->state_saved = false;
362 i = drv->suspend(pci_dev, state);
363 suspend_report_result(drv->suspend, i);
367 if (pci_dev->state_saved)
370 if (pci_dev->current_state != PCI_D0
371 && pci_dev->current_state != PCI_UNKNOWN) {
372 WARN_ONCE(pci_dev->current_state != prev,
373 "PCI PM: Device state not saved by %pF\n",
379 pci_save_state(pci_dev);
381 * This is for compatibility with existing code with legacy PM support.
383 pci_pm_set_unknown_state(pci_dev);
386 pci_fixup_device(pci_fixup_suspend, pci_dev);
391 static int pci_legacy_suspend_late(struct device *dev, pm_message_t state)
393 struct pci_dev * pci_dev = to_pci_dev(dev);
394 struct pci_driver * drv = pci_dev->driver;
397 if (drv && drv->suspend_late) {
398 i = drv->suspend_late(pci_dev, state);
399 suspend_report_result(drv->suspend_late, i);
404 static int pci_legacy_resume_early(struct device *dev)
406 struct pci_dev * pci_dev = to_pci_dev(dev);
407 struct pci_driver * drv = pci_dev->driver;
409 return drv && drv->resume_early ?
410 drv->resume_early(pci_dev) : 0;
413 static int pci_legacy_resume(struct device *dev)
415 struct pci_dev * pci_dev = to_pci_dev(dev);
416 struct pci_driver * drv = pci_dev->driver;
418 pci_fixup_device(pci_fixup_resume, pci_dev);
420 return drv && drv->resume ?
421 drv->resume(pci_dev) : pci_pm_reenable_device(pci_dev);
424 /* Auxiliary functions used by the new power management framework */
426 static void pci_pm_default_resume_noirq(struct pci_dev *pci_dev)
428 pci_restore_standard_config(pci_dev);
429 pci_dev->state_saved = false;
430 pci_fixup_device(pci_fixup_resume_early, pci_dev);
433 static void pci_pm_default_resume(struct pci_dev *pci_dev)
435 pci_fixup_device(pci_fixup_resume, pci_dev);
437 if (!pci_is_bridge(pci_dev))
438 pci_enable_wake(pci_dev, PCI_D0, false);
441 static void pci_pm_default_suspend(struct pci_dev *pci_dev)
443 /* Disable non-bridge devices without PM support */
444 if (!pci_is_bridge(pci_dev))
445 pci_disable_enabled_device(pci_dev);
446 pci_save_state(pci_dev);
449 static bool pci_has_legacy_pm_support(struct pci_dev *pci_dev)
451 struct pci_driver *drv = pci_dev->driver;
452 bool ret = drv && (drv->suspend || drv->suspend_late || drv->resume
453 || drv->resume_early);
456 * Legacy PM support is used by default, so warn if the new framework is
457 * supported as well. Drivers are supposed to support either the
458 * former, or the latter, but not both at the same time.
460 WARN_ON(ret && drv->driver.pm);
465 /* New power management framework */
467 static int pci_pm_prepare(struct device *dev)
469 struct device_driver *drv = dev->driver;
472 if (drv && drv->pm && drv->pm->prepare)
473 error = drv->pm->prepare(dev);
478 static void pci_pm_complete(struct device *dev)
480 struct device_driver *drv = dev->driver;
482 if (drv && drv->pm && drv->pm->complete)
483 drv->pm->complete(dev);
486 #ifdef CONFIG_SUSPEND
488 static int pci_pm_suspend(struct device *dev)
490 struct pci_dev *pci_dev = to_pci_dev(dev);
491 struct dev_pm_ops *pm = dev->driver ? dev->driver->pm : NULL;
493 if (pci_has_legacy_pm_support(pci_dev))
494 return pci_legacy_suspend(dev, PMSG_SUSPEND);
497 pci_pm_default_suspend(pci_dev);
501 pci_dev->state_saved = false;
504 pci_power_t prev = pci_dev->current_state;
507 error = pm->suspend(dev);
508 suspend_report_result(pm->suspend, error);
512 if (pci_dev->state_saved)
515 if (pci_dev->current_state != PCI_D0
516 && pci_dev->current_state != PCI_UNKNOWN) {
517 WARN_ONCE(pci_dev->current_state != prev,
518 "PCI PM: State of device not saved by %pF\n",
524 if (!pci_dev->state_saved) {
525 pci_save_state(pci_dev);
526 if (!pci_is_bridge(pci_dev))
527 pci_prepare_to_sleep(pci_dev);
531 pci_fixup_device(pci_fixup_suspend, pci_dev);
536 static int pci_pm_suspend_noirq(struct device *dev)
538 struct pci_dev *pci_dev = to_pci_dev(dev);
539 struct device_driver *drv = dev->driver;
542 if (pci_has_legacy_pm_support(pci_dev))
543 return pci_legacy_suspend_late(dev, PMSG_SUSPEND);
545 if (drv && drv->pm && drv->pm->suspend_noirq) {
546 error = drv->pm->suspend_noirq(dev);
547 suspend_report_result(drv->pm->suspend_noirq, error);
551 pci_pm_set_unknown_state(pci_dev);
556 static int pci_pm_resume_noirq(struct device *dev)
558 struct pci_dev *pci_dev = to_pci_dev(dev);
559 struct device_driver *drv = dev->driver;
562 pci_pm_default_resume_noirq(pci_dev);
564 if (pci_has_legacy_pm_support(pci_dev))
565 return pci_legacy_resume_early(dev);
567 if (drv && drv->pm && drv->pm->resume_noirq)
568 error = drv->pm->resume_noirq(dev);
573 static int pci_pm_resume(struct device *dev)
575 struct pci_dev *pci_dev = to_pci_dev(dev);
576 struct dev_pm_ops *pm = dev->driver ? dev->driver->pm : NULL;
580 * This is necessary for the suspend error path in which resume is
581 * called without restoring the standard config registers of the device.
583 if (pci_dev->state_saved)
584 pci_restore_standard_config(pci_dev);
586 if (pci_has_legacy_pm_support(pci_dev))
587 return pci_legacy_resume(dev);
589 pci_pm_default_resume(pci_dev);
593 error = pm->resume(dev);
595 pci_pm_reenable_device(pci_dev);
601 #else /* !CONFIG_SUSPEND */
603 #define pci_pm_suspend NULL
604 #define pci_pm_suspend_noirq NULL
605 #define pci_pm_resume NULL
606 #define pci_pm_resume_noirq NULL
608 #endif /* !CONFIG_SUSPEND */
610 #ifdef CONFIG_HIBERNATION
612 static int pci_pm_freeze(struct device *dev)
614 struct pci_dev *pci_dev = to_pci_dev(dev);
615 struct dev_pm_ops *pm = dev->driver ? dev->driver->pm : NULL;
617 if (pci_has_legacy_pm_support(pci_dev))
618 return pci_legacy_suspend(dev, PMSG_FREEZE);
621 pci_pm_default_suspend(pci_dev);
625 pci_dev->state_saved = false;
630 error = pm->freeze(dev);
631 suspend_report_result(pm->freeze, error);
636 if (!pci_dev->state_saved)
637 pci_save_state(pci_dev);
642 static int pci_pm_freeze_noirq(struct device *dev)
644 struct pci_dev *pci_dev = to_pci_dev(dev);
645 struct device_driver *drv = dev->driver;
648 if (pci_has_legacy_pm_support(pci_dev))
649 return pci_legacy_suspend_late(dev, PMSG_FREEZE);
651 if (drv && drv->pm && drv->pm->freeze_noirq) {
652 error = drv->pm->freeze_noirq(dev);
653 suspend_report_result(drv->pm->freeze_noirq, error);
657 pci_pm_set_unknown_state(pci_dev);
662 static int pci_pm_thaw_noirq(struct device *dev)
664 struct pci_dev *pci_dev = to_pci_dev(dev);
665 struct device_driver *drv = dev->driver;
668 if (pci_has_legacy_pm_support(pci_dev))
669 return pci_legacy_resume_early(dev);
671 pci_update_current_state(pci_dev, PCI_D0);
673 if (drv && drv->pm && drv->pm->thaw_noirq)
674 error = drv->pm->thaw_noirq(dev);
679 static int pci_pm_thaw(struct device *dev)
681 struct pci_dev *pci_dev = to_pci_dev(dev);
682 struct dev_pm_ops *pm = dev->driver ? dev->driver->pm : NULL;
685 if (pci_has_legacy_pm_support(pci_dev))
686 return pci_legacy_resume(dev);
690 error = pm->thaw(dev);
692 pci_pm_reenable_device(pci_dev);
698 static int pci_pm_poweroff(struct device *dev)
700 struct pci_dev *pci_dev = to_pci_dev(dev);
701 struct dev_pm_ops *pm = dev->driver ? dev->driver->pm : NULL;
704 if (pci_has_legacy_pm_support(pci_dev))
705 return pci_legacy_suspend(dev, PMSG_HIBERNATE);
708 pci_pm_default_suspend(pci_dev);
712 pci_dev->state_saved = false;
715 error = pm->poweroff(dev);
716 suspend_report_result(pm->poweroff, error);
719 if (!pci_dev->state_saved && !pci_is_bridge(pci_dev))
720 pci_prepare_to_sleep(pci_dev);
723 pci_fixup_device(pci_fixup_suspend, pci_dev);
728 static int pci_pm_poweroff_noirq(struct device *dev)
730 struct device_driver *drv = dev->driver;
733 if (pci_has_legacy_pm_support(to_pci_dev(dev)))
734 return pci_legacy_suspend_late(dev, PMSG_HIBERNATE);
736 if (drv && drv->pm && drv->pm->poweroff_noirq) {
737 error = drv->pm->poweroff_noirq(dev);
738 suspend_report_result(drv->pm->poweroff_noirq, error);
744 static int pci_pm_restore_noirq(struct device *dev)
746 struct pci_dev *pci_dev = to_pci_dev(dev);
747 struct device_driver *drv = dev->driver;
750 pci_pm_default_resume_noirq(pci_dev);
752 if (pci_has_legacy_pm_support(pci_dev))
753 return pci_legacy_resume_early(dev);
755 if (drv && drv->pm && drv->pm->restore_noirq)
756 error = drv->pm->restore_noirq(dev);
761 static int pci_pm_restore(struct device *dev)
763 struct pci_dev *pci_dev = to_pci_dev(dev);
764 struct dev_pm_ops *pm = dev->driver ? dev->driver->pm : NULL;
768 * This is necessary for the hibernation error path in which restore is
769 * called without restoring the standard config registers of the device.
771 if (pci_dev->state_saved)
772 pci_restore_standard_config(pci_dev);
774 if (pci_has_legacy_pm_support(pci_dev))
775 return pci_legacy_resume(dev);
777 pci_pm_default_resume(pci_dev);
781 error = pm->restore(dev);
783 pci_pm_reenable_device(pci_dev);
789 #else /* !CONFIG_HIBERNATION */
791 #define pci_pm_freeze NULL
792 #define pci_pm_freeze_noirq NULL
793 #define pci_pm_thaw NULL
794 #define pci_pm_thaw_noirq NULL
795 #define pci_pm_poweroff NULL
796 #define pci_pm_poweroff_noirq NULL
797 #define pci_pm_restore NULL
798 #define pci_pm_restore_noirq NULL
800 #endif /* !CONFIG_HIBERNATION */
802 struct dev_pm_ops pci_dev_pm_ops = {
803 .prepare = pci_pm_prepare,
804 .complete = pci_pm_complete,
805 .suspend = pci_pm_suspend,
806 .resume = pci_pm_resume,
807 .freeze = pci_pm_freeze,
809 .poweroff = pci_pm_poweroff,
810 .restore = pci_pm_restore,
811 .suspend_noirq = pci_pm_suspend_noirq,
812 .resume_noirq = pci_pm_resume_noirq,
813 .freeze_noirq = pci_pm_freeze_noirq,
814 .thaw_noirq = pci_pm_thaw_noirq,
815 .poweroff_noirq = pci_pm_poweroff_noirq,
816 .restore_noirq = pci_pm_restore_noirq,
819 #define PCI_PM_OPS_PTR (&pci_dev_pm_ops)
821 #else /* !CONFIG_PM_SLEEP */
823 #define PCI_PM_OPS_PTR NULL
825 #endif /* !CONFIG_PM_SLEEP */
828 * __pci_register_driver - register a new pci driver
829 * @drv: the driver structure to register
830 * @owner: owner module of drv
831 * @mod_name: module name string
833 * Adds the driver structure to the list of registered drivers.
834 * Returns a negative value on error, otherwise 0.
835 * If no error occurred, the driver remains registered even if
836 * no device was claimed during registration.
838 int __pci_register_driver(struct pci_driver *drv, struct module *owner,
839 const char *mod_name)
843 /* initialize common driver fields */
844 drv->driver.name = drv->name;
845 drv->driver.bus = &pci_bus_type;
846 drv->driver.owner = owner;
847 drv->driver.mod_name = mod_name;
849 spin_lock_init(&drv->dynids.lock);
850 INIT_LIST_HEAD(&drv->dynids.list);
852 /* register with core */
853 error = driver_register(&drv->driver);
857 error = pci_create_newid_file(drv);
859 driver_unregister(&drv->driver);
865 * pci_unregister_driver - unregister a pci driver
866 * @drv: the driver structure to unregister
868 * Deletes the driver structure from the list of registered PCI drivers,
869 * gives it a chance to clean up by calling its remove() function for
870 * each device it was responsible for, and marks those devices as
875 pci_unregister_driver(struct pci_driver *drv)
877 pci_remove_newid_file(drv);
878 driver_unregister(&drv->driver);
879 pci_free_dynids(drv);
882 static struct pci_driver pci_compat_driver = {
887 * pci_dev_driver - get the pci_driver of a device
888 * @dev: the device to query
890 * Returns the appropriate pci_driver structure or %NULL if there is no
891 * registered driver for the device.
894 pci_dev_driver(const struct pci_dev *dev)
900 for(i=0; i<=PCI_ROM_RESOURCE; i++)
901 if (dev->resource[i].flags & IORESOURCE_BUSY)
902 return &pci_compat_driver;
908 * pci_bus_match - Tell if a PCI device structure has a matching PCI device id structure
909 * @dev: the PCI device structure to match against
910 * @drv: the device driver to search for matching PCI device id structures
912 * Used by a driver to check whether a PCI device present in the
913 * system is in its list of supported devices. Returns the matching
914 * pci_device_id structure or %NULL if there is no match.
916 static int pci_bus_match(struct device *dev, struct device_driver *drv)
918 struct pci_dev *pci_dev = to_pci_dev(dev);
919 struct pci_driver *pci_drv = to_pci_driver(drv);
920 const struct pci_device_id *found_id;
922 found_id = pci_match_device(pci_drv, pci_dev);
930 * pci_dev_get - increments the reference count of the pci device structure
931 * @dev: the device being referenced
933 * Each live reference to a device should be refcounted.
935 * Drivers for PCI devices should normally record such references in
936 * their probe() methods, when they bind to a device, and release
937 * them by calling pci_dev_put(), in their disconnect() methods.
939 * A pointer to the device with the incremented reference counter is returned.
941 struct pci_dev *pci_dev_get(struct pci_dev *dev)
944 get_device(&dev->dev);
949 * pci_dev_put - release a use of the pci device structure
950 * @dev: device that's been disconnected
952 * Must be called when a user of a device is finished with it. When the last
953 * user of the device calls this function, the memory of the device is freed.
955 void pci_dev_put(struct pci_dev *dev)
958 put_device(&dev->dev);
961 #ifndef CONFIG_HOTPLUG
962 int pci_uevent(struct device *dev, struct kobj_uevent_env *env)
968 struct bus_type pci_bus_type = {
970 .match = pci_bus_match,
971 .uevent = pci_uevent,
972 .probe = pci_device_probe,
973 .remove = pci_device_remove,
974 .shutdown = pci_device_shutdown,
975 .dev_attrs = pci_dev_attrs,
976 .pm = PCI_PM_OPS_PTR,
979 static int __init pci_driver_init(void)
981 return bus_register(&pci_bus_type);
984 postcore_initcall(pci_driver_init);
986 EXPORT_SYMBOL(pci_match_id);
987 EXPORT_SYMBOL(__pci_register_driver);
988 EXPORT_SYMBOL(pci_unregister_driver);
989 EXPORT_SYMBOL(pci_dev_driver);
990 EXPORT_SYMBOL(pci_bus_type);
991 EXPORT_SYMBOL(pci_dev_get);
992 EXPORT_SYMBOL(pci_dev_put);