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Commit | Line | Data |
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1da177e4 LT |
1 | #include <linux/pci.h> |
2 | #include <linux/module.h> | |
7d715a6c | 3 | #include <linux/pci-aspm.h> |
1da177e4 LT |
4 | #include "pci.h" |
5 | ||
6 | static void pci_free_resources(struct pci_dev *dev) | |
7 | { | |
8 | int i; | |
9 | ||
10 | msi_remove_pci_irq_vectors(dev); | |
11 | ||
12 | pci_cleanup_rom(dev); | |
13 | for (i = 0; i < PCI_NUM_RESOURCES; i++) { | |
14 | struct resource *res = dev->resource + i; | |
15 | if (res->parent) | |
16 | release_resource(res); | |
17 | } | |
18 | } | |
19 | ||
24f8aa9b | 20 | static void pci_stop_dev(struct pci_dev *dev) |
1da177e4 | 21 | { |
8a1bc901 | 22 | if (dev->is_added) { |
091ca9f0 RS |
23 | pci_proc_detach_device(dev); |
24 | pci_remove_sysfs_dev_files(dev); | |
25 | device_unregister(&dev->dev); | |
8a1bc901 | 26 | dev->is_added = 0; |
091ca9f0 | 27 | } |
7d715a6c SL |
28 | |
29 | if (dev->bus->self) | |
30 | pcie_aspm_exit_link_state(dev); | |
24f8aa9b ST |
31 | } |
32 | ||
33 | static void pci_destroy_dev(struct pci_dev *dev) | |
34 | { | |
1da177e4 LT |
35 | /* Remove the device from the device lists, and prevent any further |
36 | * list accesses from this device */ | |
d71374da | 37 | down_write(&pci_bus_sem); |
1da177e4 | 38 | list_del(&dev->bus_list); |
1da177e4 | 39 | dev->bus_list.next = dev->bus_list.prev = NULL; |
d71374da | 40 | up_write(&pci_bus_sem); |
1da177e4 LT |
41 | |
42 | pci_free_resources(dev); | |
43 | pci_dev_put(dev); | |
44 | } | |
45 | ||
1da177e4 LT |
46 | void pci_remove_bus(struct pci_bus *pci_bus) |
47 | { | |
48 | pci_proc_detach_bus(pci_bus); | |
49 | ||
d71374da | 50 | down_write(&pci_bus_sem); |
1da177e4 | 51 | list_del(&pci_bus->node); |
f6dd68a7 | 52 | pci_bus_release_busn_res(pci_bus); |
d71374da | 53 | up_write(&pci_bus_sem); |
2b563134 YZ |
54 | if (!pci_bus->is_added) |
55 | return; | |
56 | ||
1da177e4 | 57 | pci_remove_legacy_files(pci_bus); |
fd7d1ced | 58 | device_unregister(&pci_bus->dev); |
1da177e4 LT |
59 | } |
60 | EXPORT_SYMBOL(pci_remove_bus); | |
61 | ||
62 | /** | |
210647af | 63 | * pci_stop_and_remove_bus_device - remove a PCI device and any children |
1da177e4 LT |
64 | * @dev: the device to remove |
65 | * | |
66 | * Remove a PCI device from the device lists, informing the drivers | |
67 | * that the device has been removed. We also remove any subordinate | |
68 | * buses and children in a depth-first manner. | |
69 | * | |
70 | * For each device we remove, delete the device structure from the | |
71 | * device lists, remove the /proc entry, and notify userspace | |
72 | * (/sbin/hotplug). | |
73 | */ | |
210647af | 74 | void pci_stop_and_remove_bus_device(struct pci_dev *dev) |
24f8aa9b | 75 | { |
2ed168ee BH |
76 | struct pci_bus *bus = dev->subordinate; |
77 | struct pci_dev *child, *tmp; | |
78 | ||
79 | /* | |
80 | * Removing an SR-IOV PF device removes all the associated VFs, | |
81 | * which will update the bus->devices list and confuse the | |
82 | * iterator. Therefore, iterate in reverse so we remove the VFs | |
83 | * first, then the PF. | |
84 | */ | |
282e1d65 | 85 | if (bus) { |
2ed168ee BH |
86 | list_for_each_entry_safe_reverse(child, tmp, |
87 | &bus->devices, bus_list) | |
282e1d65 BH |
88 | pci_stop_and_remove_bus_device(child); |
89 | ||
90 | pci_remove_bus(bus); | |
91 | dev->subordinate = NULL; | |
92 | } | |
24f8aa9b ST |
93 | |
94 | pci_stop_dev(dev); | |
282e1d65 | 95 | pci_destroy_dev(dev); |
24f8aa9b | 96 | } |
210647af | 97 | EXPORT_SYMBOL(pci_stop_and_remove_bus_device); |