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>
17 static int pcie_port_bus_match(struct device *dev, struct device_driver *drv);
18 static int pcie_port_bus_suspend(struct device *dev, pm_message_t state);
19 static int pcie_port_bus_resume(struct device *dev);
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,
28 static int pcie_port_bus_match(struct device *dev, struct device_driver *drv)
30 struct pcie_device *pciedev;
31 struct pcie_port_service_driver *driver;
33 if (drv->bus != &pcie_port_bus_type || dev->bus != &pcie_port_bus_type)
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) ||
42 (driver->id_table->port_type != PCIE_ANY_PORT &&
43 driver->id_table->port_type != pciedev->id.port_type) ||
44 driver->id_table->service_type != pciedev->id.service_type )
50 static int pcie_port_bus_suspend(struct device *dev, pm_message_t state)
52 struct pcie_device *pciedev;
53 struct pcie_port_service_driver *driver;
55 if (!dev || !dev->driver)
58 pciedev = to_pcie_device(dev);
59 driver = to_service_driver(dev->driver);
60 if (driver && driver->suspend)
61 driver->suspend(pciedev, state);
65 static int pcie_port_bus_resume(struct device *dev)
67 struct pcie_device *pciedev;
68 struct pcie_port_service_driver *driver;
70 if (!dev || !dev->driver)
73 pciedev = to_pcie_device(dev);
74 driver = to_service_driver(dev->driver);
75 if (driver && driver->resume)
76 driver->resume(pciedev);