/* * File: portdrv_bus.c * Purpose: PCI Express Port Bus Driver's Bus Overloading Functions * * Copyright (C) 2004 Intel * Copyright (C) Tom Long Nguyen (tom.l.nguyen@intel.com) */ #include <linux/module.h> #include <linux/pci.h> #include <linux/kernel.h> #include <linux/errno.h> #include <linux/pm.h> #include <linux/pcieport_if.h> #include "portdrv.h" static int pcie_port_bus_match(struct device *dev, struct device_driver *drv); struct bus_type pcie_port_bus_type = { .name = "pci_express", .match = pcie_port_bus_match, }; EXPORT_SYMBOL_GPL(pcie_port_bus_type); static int pcie_port_bus_match(struct device *dev, struct device_driver *drv) { struct pcie_device *pciedev; struct pcie_port_data *port_data; struct pcie_port_service_driver *driver; if (drv->bus != &pcie_port_bus_type || dev->bus != &pcie_port_bus_type) return 0; pciedev = to_pcie_device(dev); driver = to_service_driver(drv); if (driver->service != pciedev->service) return 0; port_data = pci_get_drvdata(pciedev->port); if (driver->port_type != PCIE_ANY_PORT && driver->port_type != port_data->port_type) return 0; return 1; } int pcie_port_bus_register(void) { return bus_register(&pcie_port_bus_type); } void pcie_port_bus_unregister(void) { bus_unregister(&pcie_port_bus_type); }