Staging
v0.8.1
v0.8.1
swh:1:snp:a902887e4be9191b7c6c4406aa06b31c1ce2c7cc
Tip revision: d9f8bcbf67a0ee67c8cb0734f003dfe916bb5248 authored by Linus Torvalds on 17 November 2007, 05:16:36 UTC
Linux 2.6.24-rc3
Linux 2.6.24-rc3
Tip revision: d9f8bcb
portdrv_bus.c
/*
* 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,
};
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_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 != PCIE_ANY_PORT &&
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;
}