linux/drivers/rapidio/rio-driver.c

// SPDX-License-Identifier: GPL-2.0-or-later
/*
 * RapidIO driver support
 *
 * Copyright 2005 MontaVista Software, Inc.
 * Matt Porter <[email protected]>
 */

#include <linux/init.h>
#include <linux/module.h>
#include <linux/rio.h>
#include <linux/rio_ids.h>
#include <linux/rio_drv.h>

#include "rio.h"

/**
 *  rio_match_device - Tell if a RIO device has a matching RIO device id structure
 *  @id: the RIO device id structure to match against
 *  @rdev: the RIO device structure to match against
 *
 *  Used from driver probe and bus matching to check whether a RIO device
 *  matches a device id structure provided by a RIO driver. Returns the
 *  matching &struct rio_device_id or %NULL if there is no match.
 */
static const struct rio_device_id *rio_match_device(const struct rio_device_id
						    *id,
						    const struct rio_dev *rdev)
{ … }

/**
 * rio_dev_get - Increments the reference count of the RIO device structure
 *
 * @rdev: RIO device being referenced
 *
 * Each live reference to a device should be refcounted.
 *
 * Drivers for RIO devices should normally record such references in
 * their probe() methods, when they bind to a device, and release
 * them by calling rio_dev_put(), in their disconnect() methods.
 */
struct rio_dev *rio_dev_get(struct rio_dev *rdev)
{ … }

/**
 * rio_dev_put - Release a use of the RIO device structure
 *
 * @rdev: RIO device being disconnected
 *
 * Must be called when a user of a device is finished with it.
 * When the last user of the device calls this function, the
 * memory of the device is freed.
 */
void rio_dev_put(struct rio_dev *rdev)
{ … }

/**
 *  rio_device_probe - Tell if a RIO device structure has a matching RIO device id structure
 *  @dev: the RIO device structure to match against
 *
 * return 0 and set rio_dev->driver when drv claims rio_dev, else error
 */
static int rio_device_probe(struct device *dev)
{ … }

/**
 *  rio_device_remove - Remove a RIO device from the system
 *
 *  @dev: the RIO device structure to match against
 *
 * Remove a RIO device from the system. If it has an associated
 * driver, then run the driver remove() method.  Then update
 * the reference count.
 */
static void rio_device_remove(struct device *dev)
{ … }

static void rio_device_shutdown(struct device *dev)
{ … }

/**
 *  rio_register_driver - register a new RIO driver
 *  @rdrv: the RIO driver structure to register
 *
 *  Adds a &struct rio_driver to the list of registered drivers.
 *  Returns a negative value on error, otherwise 0. If no error
 *  occurred, the driver remains registered even if no device
 *  was claimed during registration.
 */
int rio_register_driver(struct rio_driver *rdrv)
{ … }

/**
 *  rio_unregister_driver - unregister a RIO driver
 *  @rdrv: the RIO driver structure to unregister
 *
 *  Deletes the &struct rio_driver from the list of registered RIO
 *  drivers, gives it a chance to clean up by calling its remove()
 *  function for each device it was responsible for, and marks those
 *  devices as driverless.
 */
void rio_unregister_driver(struct rio_driver *rdrv)
{ … }

void rio_attach_device(struct rio_dev *rdev)
{ … }
EXPORT_SYMBOL_GPL(…);

/**
 *  rio_match_bus - Tell if a RIO device structure has a matching RIO driver device id structure
 *  @dev: the standard device structure to match against
 *  @drv: the standard driver structure containing the ids to match against
 *
 *  Used by a driver to check whether a RIO device present in the
 *  system is in its list of supported devices. Returns 1 if
 *  there is a matching &struct rio_device_id or 0 if there is
 *  no match.
 */
static int rio_match_bus(struct device *dev, const struct device_driver *drv)
{ … }

static int rio_uevent(const struct device *dev, struct kobj_uevent_env *env)
{ … }

struct class rio_mport_class = …;
EXPORT_SYMBOL_GPL(…);

struct bus_type rio_bus_type = …;

/**
 *  rio_bus_init - Register the RapidIO bus with the device model
 *
 *  Registers the RIO mport device class and RIO bus type with the Linux
 *  device model.
 */
static int __init rio_bus_init(void)
{ … }

postcore_initcall(rio_bus_init);

EXPORT_SYMBOL_GPL(…);
EXPORT_SYMBOL_GPL(…);
EXPORT_SYMBOL_GPL(…);
EXPORT_SYMBOL_GPL(…);
EXPORT_SYMBOL_GPL(…);