| /* |
| * 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> |
| |
| static int pcie_port_bus_match(struct device *dev, struct device_driver *drv); |
| static int pcie_port_bus_suspend(struct device *dev, pm_message_t state); |
| static int pcie_port_bus_resume(struct device *dev); |
| |
| struct bus_type pcie_port_bus_type = { |
| .name = "pci_express", |
| .match = pcie_port_bus_match, |
| .suspend = pcie_port_bus_suspend, |
| .resume = pcie_port_bus_resume, |
| }; |
| |
| static int pcie_port_bus_match(struct device *dev, struct device_driver *drv) |
| { |
| struct pcie_device *pciedev; |
| 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->id_table->vendor != PCI_ANY_ID && |
| driver->id_table->vendor != pciedev->id.vendor) || |
| (driver->id_table->device != PCI_ANY_ID && |
| driver->id_table->device != pciedev->id.device) || |
| driver->id_table->port_type != pciedev->id.port_type || |
| driver->id_table->service_type != pciedev->id.service_type ) |
| return 0; |
| |
| return 1; |
| } |
| |
| static int pcie_port_bus_suspend(struct device *dev, pm_message_t state) |
| { |
| struct pcie_device *pciedev; |
| struct pcie_port_service_driver *driver; |
| |
| if (!dev || !dev->driver) |
| return 0; |
| |
| pciedev = to_pcie_device(dev); |
| driver = to_service_driver(dev->driver); |
| if (driver && driver->suspend) |
| driver->suspend(pciedev, state); |
| return 0; |
| } |
| |
| static int pcie_port_bus_resume(struct device *dev) |
| { |
| struct pcie_device *pciedev; |
| struct pcie_port_service_driver *driver; |
| |
| if (!dev || !dev->driver) |
| return 0; |
| |
| pciedev = to_pcie_device(dev); |
| driver = to_service_driver(dev->driver); |
| if (driver && driver->resume) |
| driver->resume(pciedev); |
| return 0; |
| } |