Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * File: portdrv_bus.c | |
3 | * Purpose: PCI Express Port Bus Driver's Bus Overloading Functions | |
4 | * | |
5 | * Copyright (C) 2004 Intel | |
6 | * Copyright (C) Tom Long Nguyen (tom.l.nguyen@intel.com) | |
7 | */ | |
8 | ||
9 | #include <linux/module.h> | |
10 | #include <linux/pci.h> | |
11 | #include <linux/kernel.h> | |
12 | #include <linux/errno.h> | |
13 | #include <linux/pm.h> | |
14 | ||
15 | #include <linux/pcieport_if.h> | |
5d9526d0 | 16 | #include "portdrv.h" |
1da177e4 LT |
17 | |
18 | static int pcie_port_bus_match(struct device *dev, struct device_driver *drv); | |
1da177e4 LT |
19 | |
20 | struct bus_type pcie_port_bus_type = { | |
f7625980 BH |
21 | .name = "pci_express", |
22 | .match = pcie_port_bus_match, | |
1da177e4 | 23 | }; |
48408157 | 24 | EXPORT_SYMBOL_GPL(pcie_port_bus_type); |
1da177e4 LT |
25 | |
26 | static int pcie_port_bus_match(struct device *dev, struct device_driver *drv) | |
27 | { | |
28 | struct pcie_device *pciedev; | |
29 | struct pcie_port_service_driver *driver; | |
30 | ||
31 | if (drv->bus != &pcie_port_bus_type || dev->bus != &pcie_port_bus_type) | |
32 | return 0; | |
22106368 | 33 | |
1da177e4 LT |
34 | pciedev = to_pcie_device(dev); |
35 | driver = to_service_driver(drv); | |
22106368 RW |
36 | |
37 | if (driver->service != pciedev->service) | |
38 | return 0; | |
39 | ||
694f88ef | 40 | if ((driver->port_type != PCIE_ANY_PORT) && |
62f87c0e | 41 | (driver->port_type != pci_pcie_type(pciedev->port))) |
1da177e4 LT |
42 | return 0; |
43 | ||
44 | return 1; | |
45 | } | |
fa6c9937 RW |
46 | |
47 | int pcie_port_bus_register(void) | |
48 | { | |
49 | return bus_register(&pcie_port_bus_type); | |
50 | } | |
51 | ||
52 | void pcie_port_bus_unregister(void) | |
53 | { | |
54 | bus_unregister(&pcie_port_bus_type); | |
55 | } |