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);
20 struct bus_type pcie_port_bus_type = {
21 .name = "pci_express",
22 .match = pcie_port_bus_match,
24 EXPORT_SYMBOL_GPL(pcie_port_bus_type);
26 static int pcie_port_bus_match(struct device *dev, struct device_driver *drv)
28 struct pcie_device *pciedev;
29 struct pcie_port_data *port_data;
30 struct pcie_port_service_driver *driver;
32 if (drv->bus != &pcie_port_bus_type || dev->bus != &pcie_port_bus_type)
35 pciedev = to_pcie_device(dev);
36 driver = to_service_driver(drv);
38 if (driver->service != pciedev->service)
41 port_data = pci_get_drvdata(pciedev->port);
43 if (driver->port_type != PCIE_ANY_PORT
44 && driver->port_type != port_data->port_type)
50 int pcie_port_bus_register(void)
52 return bus_register(&pcie_port_bus_type);
55 void pcie_port_bus_unregister(void)
57 bus_unregister(&pcie_port_bus_type);