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> | |
16 | ||
17 | static int pcie_port_bus_match(struct device *dev, struct device_driver *drv); | |
7f4927c1 | 18 | static int pcie_port_bus_suspend(struct device *dev, pm_message_t state); |
1da177e4 LT |
19 | static int pcie_port_bus_resume(struct device *dev); |
20 | ||
21 | struct bus_type pcie_port_bus_type = { | |
22 | .name = "pci_express", | |
23 | .match = pcie_port_bus_match, | |
24 | .suspend = pcie_port_bus_suspend, | |
25 | .resume = pcie_port_bus_resume, | |
26 | }; | |
27 | ||
28 | static int pcie_port_bus_match(struct device *dev, struct device_driver *drv) | |
29 | { | |
30 | struct pcie_device *pciedev; | |
31 | struct pcie_port_service_driver *driver; | |
32 | ||
33 | if (drv->bus != &pcie_port_bus_type || dev->bus != &pcie_port_bus_type) | |
34 | return 0; | |
35 | ||
36 | pciedev = to_pcie_device(dev); | |
37 | driver = to_service_driver(drv); | |
38 | if ( (driver->id_table->vendor != PCI_ANY_ID && | |
39 | driver->id_table->vendor != pciedev->id.vendor) || | |
40 | (driver->id_table->device != PCI_ANY_ID && | |
41 | driver->id_table->device != pciedev->id.device) || | |
8b245e45 DS |
42 | (driver->id_table->port_type != PCIE_ANY_PORT && |
43 | driver->id_table->port_type != pciedev->id.port_type) || | |
1da177e4 LT |
44 | driver->id_table->service_type != pciedev->id.service_type ) |
45 | return 0; | |
46 | ||
47 | return 1; | |
48 | } | |
49 | ||
7f4927c1 | 50 | static int pcie_port_bus_suspend(struct device *dev, pm_message_t state) |
1da177e4 LT |
51 | { |
52 | struct pcie_device *pciedev; | |
53 | struct pcie_port_service_driver *driver; | |
54 | ||
55 | if (!dev || !dev->driver) | |
56 | return 0; | |
57 | ||
58 | pciedev = to_pcie_device(dev); | |
59 | driver = to_service_driver(dev->driver); | |
60 | if (driver && driver->suspend) | |
61 | driver->suspend(pciedev, state); | |
62 | return 0; | |
63 | } | |
64 | ||
65 | static int pcie_port_bus_resume(struct device *dev) | |
66 | { | |
67 | struct pcie_device *pciedev; | |
68 | struct pcie_port_service_driver *driver; | |
69 | ||
70 | if (!dev || !dev->driver) | |
71 | return 0; | |
72 | ||
73 | pciedev = to_pcie_device(dev); | |
74 | driver = to_service_driver(dev->driver); | |
75 | if (driver && driver->resume) | |
76 | driver->resume(pciedev); | |
77 | return 0; | |
78 | } |