Commit | Line | Data |
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1da177e4 LT |
1 | #include <linux/pci.h> |
2 | #include <linux/module.h> | |
3 | #include "pci.h" | |
4 | ||
5 | static void pci_free_resources(struct pci_dev *dev) | |
6 | { | |
7 | int i; | |
8 | ||
9 | msi_remove_pci_irq_vectors(dev); | |
10 | ||
11 | pci_cleanup_rom(dev); | |
12 | for (i = 0; i < PCI_NUM_RESOURCES; i++) { | |
13 | struct resource *res = dev->resource + i; | |
14 | if (res->parent) | |
15 | release_resource(res); | |
16 | } | |
17 | } | |
18 | ||
19 | static void pci_destroy_dev(struct pci_dev *dev) | |
20 | { | |
21 | pci_proc_detach_device(dev); | |
22 | pci_remove_sysfs_dev_files(dev); | |
23 | device_unregister(&dev->dev); | |
24 | ||
25 | /* Remove the device from the device lists, and prevent any further | |
26 | * list accesses from this device */ | |
27 | spin_lock(&pci_bus_lock); | |
28 | list_del(&dev->bus_list); | |
29 | list_del(&dev->global_list); | |
30 | dev->bus_list.next = dev->bus_list.prev = NULL; | |
31 | dev->global_list.next = dev->global_list.prev = NULL; | |
32 | spin_unlock(&pci_bus_lock); | |
33 | ||
34 | pci_free_resources(dev); | |
35 | pci_dev_put(dev); | |
36 | } | |
37 | ||
38 | /** | |
39 | * pci_remove_device_safe - remove an unused hotplug device | |
40 | * @dev: the device to remove | |
41 | * | |
42 | * Delete the device structure from the device lists and | |
43 | * notify userspace (/sbin/hotplug), but only if the device | |
44 | * in question is not being used by a driver. | |
45 | * Returns 0 on success. | |
46 | */ | |
47 | int pci_remove_device_safe(struct pci_dev *dev) | |
48 | { | |
49 | if (pci_dev_driver(dev)) | |
50 | return -EBUSY; | |
51 | pci_destroy_dev(dev); | |
52 | return 0; | |
53 | } | |
54 | EXPORT_SYMBOL(pci_remove_device_safe); | |
55 | ||
56 | void pci_remove_bus(struct pci_bus *pci_bus) | |
57 | { | |
58 | pci_proc_detach_bus(pci_bus); | |
59 | ||
60 | spin_lock(&pci_bus_lock); | |
61 | list_del(&pci_bus->node); | |
62 | spin_unlock(&pci_bus_lock); | |
63 | pci_remove_legacy_files(pci_bus); | |
64 | class_device_remove_file(&pci_bus->class_dev, | |
65 | &class_device_attr_cpuaffinity); | |
66 | sysfs_remove_link(&pci_bus->class_dev.kobj, "bridge"); | |
67 | class_device_unregister(&pci_bus->class_dev); | |
68 | } | |
69 | EXPORT_SYMBOL(pci_remove_bus); | |
70 | ||
71 | /** | |
72 | * pci_remove_bus_device - remove a PCI device and any children | |
73 | * @dev: the device to remove | |
74 | * | |
75 | * Remove a PCI device from the device lists, informing the drivers | |
76 | * that the device has been removed. We also remove any subordinate | |
77 | * buses and children in a depth-first manner. | |
78 | * | |
79 | * For each device we remove, delete the device structure from the | |
80 | * device lists, remove the /proc entry, and notify userspace | |
81 | * (/sbin/hotplug). | |
82 | */ | |
83 | void pci_remove_bus_device(struct pci_dev *dev) | |
84 | { | |
85 | if (dev->subordinate) { | |
86 | struct pci_bus *b = dev->subordinate; | |
87 | ||
88 | pci_remove_behind_bridge(dev); | |
89 | pci_remove_bus(b); | |
90 | dev->subordinate = NULL; | |
91 | } | |
92 | ||
93 | pci_destroy_dev(dev); | |
94 | } | |
95 | ||
96 | /** | |
97 | * pci_remove_behind_bridge - remove all devices behind a PCI bridge | |
98 | * @dev: PCI bridge device | |
99 | * | |
100 | * Remove all devices on the bus, except for the parent bridge. | |
101 | * This also removes any child buses, and any devices they may | |
102 | * contain in a depth-first manner. | |
103 | */ | |
104 | void pci_remove_behind_bridge(struct pci_dev *dev) | |
105 | { | |
106 | struct list_head *l, *n; | |
107 | ||
108 | if (dev->subordinate) { | |
109 | list_for_each_safe(l, n, &dev->subordinate->devices) { | |
110 | struct pci_dev *dev = pci_dev_b(l); | |
111 | ||
112 | pci_remove_bus_device(dev); | |
113 | } | |
114 | } | |
115 | } | |
116 | ||
117 | EXPORT_SYMBOL(pci_remove_bus_device); | |
118 | EXPORT_SYMBOL(pci_remove_behind_bridge); |