3 * Purpose: PCI Express Port Bus Driver's Bus Overloading Functions
5 * Copyright (C) 2004 Intel
6 * Copyright (C) Tom Long Nguyen (tom.l.nguyen@intel.com)
9 #include <linux/module.h>
10 #include <linux/pci.h>
11 #include <linux/kernel.h>
12 #include <linux/errno.h>
15 #include <linux/pcieport_if.h>
18 static int pcie_port_bus_match(struct device *dev, struct device_driver *drv);
19 static int pcie_port_bus_suspend(struct device *dev, pm_message_t state);
20 static int pcie_port_bus_resume(struct device *dev);
22 struct bus_type pcie_port_bus_type = {
23 .name = "pci_express",
24 .match = pcie_port_bus_match,
25 .suspend = pcie_port_bus_suspend,
26 .resume = pcie_port_bus_resume,
28 EXPORT_SYMBOL_GPL(pcie_port_bus_type);
30 static int pcie_port_bus_match(struct device *dev, struct device_driver *drv)
32 struct pcie_device *pciedev;
33 struct pcie_port_service_driver *driver;
35 if (drv->bus != &pcie_port_bus_type || dev->bus != &pcie_port_bus_type)
38 pciedev = to_pcie_device(dev);
39 driver = to_service_driver(drv);
40 if ( (driver->id_table->vendor != PCI_ANY_ID &&
41 driver->id_table->vendor != pciedev->id.vendor) ||
42 (driver->id_table->device != PCI_ANY_ID &&
43 driver->id_table->device != pciedev->id.device) ||
44 (driver->id_table->port_type != PCIE_ANY_PORT &&
45 driver->id_table->port_type != pciedev->id.port_type) ||
46 driver->id_table->service_type != pciedev->id.service_type )
52 static int pcie_port_bus_suspend(struct device *dev, pm_message_t state)
54 struct pcie_device *pciedev;
55 struct pcie_port_service_driver *driver;
57 if (!dev || !dev->driver)
60 pciedev = to_pcie_device(dev);
61 driver = to_service_driver(dev->driver);
62 if (driver && driver->suspend)
63 driver->suspend(pciedev, state);
67 static int pcie_port_bus_resume(struct device *dev)
69 struct pcie_device *pciedev;
70 struct pcie_port_service_driver *driver;
72 if (!dev || !dev->driver)
75 pciedev = to_pcie_device(dev);
76 driver = to_service_driver(dev->driver);
77 if (driver && driver->resume)
78 driver->resume(pciedev);