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Release 4.14 drivers/rapidio/rio-driver.c

Directory: drivers/rapidio
 * RapidIO driver support
 * Copyright 2005 MontaVista Software, Inc.
 * Matt Porter <>
 * This program is free software; you can redistribute  it and/or modify it
 * under  the terms of  the GNU General  Public License as published by the
 * Free Software Foundation;  either version 2 of the  License, or (at your
 * option) any later version.

#include <linux/init.h>
#include <linux/module.h>
#include <linux/rio.h>
#include <linux/rio_ids.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) { while (id->vid || id->asm_vid) { if (((id->vid == RIO_ANY_ID) || (id->vid == rdev->vid)) && ((id->did == RIO_ANY_ID) || (id->did == rdev->did)) && ((id->asm_vid == RIO_ANY_ID) || (id->asm_vid == rdev->asm_vid)) && ((id->asm_did == RIO_ANY_ID) || (id->asm_did == rdev->asm_did))) return id; id++; } return NULL; }


Matt Porter124100.00%1100.00%

/** * 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) { if (rdev) get_device(&rdev->dev); return rdev; }


Matt Porter27100.00%1100.00%

/** * 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) { if (rdev) put_device(&rdev->dev); }


Matt Porter22100.00%1100.00%

/** * 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) { struct rio_driver *rdrv = to_rio_driver(dev->driver); struct rio_dev *rdev = to_rio_dev(dev); int error = -ENODEV; const struct rio_device_id *id; if (!rdev->driver && rdrv->probe) { if (!rdrv->id_table) return error; id = rio_match_device(rdrv->id_table, rdev); rio_dev_get(rdev); if (id) error = rdrv->probe(rdev, id); if (error >= 0) { rdev->driver = rdrv; error = 0; } else rio_dev_put(rdev); } return error; }


Matt Porter12498.41%150.00%
Eugene Surovegin21.59%150.00%

/** * 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 int rio_device_remove(struct device *dev) { struct rio_dev *rdev = to_rio_dev(dev); struct rio_driver *rdrv = rdev->driver; if (rdrv) { if (rdrv->remove) rdrv->remove(rdev); rdev->driver = NULL; } rio_dev_put(rdev); return 0; }


Matt Porter63100.00%1100.00%

static void rio_device_shutdown(struct device *dev) { struct rio_dev *rdev = to_rio_dev(dev); struct rio_driver *rdrv = rdev->driver; dev_dbg(dev, "RIO: %s\n", __func__); if (rdrv && rdrv->shutdown) rdrv->shutdown(rdev); }


Alexandre Bounine54100.00%1100.00%

/** * 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) { /* initialize common driver fields */ rdrv-> = rdrv->name; rdrv->driver.bus = &rio_bus_type; /* register with core */ return driver_register(&rdrv->driver); }


Matt Porter40100.00%1100.00%

/** * 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) { driver_unregister(&rdrv->driver); }


Matt Porter18100.00%1100.00%

void rio_attach_device(struct rio_dev *rdev) { rdev->dev.bus = &rio_bus_type; }


Alexandre Bounine19100.00%1100.00%

EXPORT_SYMBOL_GPL(rio_attach_device); /** * 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, struct device_driver *drv) { struct rio_dev *rdev = to_rio_dev(dev); struct rio_driver *rdrv = to_rio_driver(drv); const struct rio_device_id *id = rdrv->id_table; const struct rio_device_id *found_id; if (!id) goto out; found_id = rio_match_device(id, rdev); if (found_id) return 1; out:return 0; }


Matt Porter81100.00%1100.00%

static int rio_uevent(struct device *dev, struct kobj_uevent_env *env) { struct rio_dev *rdev; if (!dev) return -ENODEV; rdev = to_rio_dev(dev); if (!rdev) return -ENODEV; if (add_uevent_var(env, "MODALIAS=rapidio:v%04Xd%04Xav%04Xad%04X", rdev->vid, rdev->did, rdev->asm_vid, rdev->asm_did)) return -ENOMEM; return 0; }


Alexandre Bounine78100.00%1100.00%

struct class rio_mport_class = { .name = "rapidio_port", .owner = THIS_MODULE, .dev_groups = rio_mport_groups, }; EXPORT_SYMBOL_GPL(rio_mport_class); struct bus_type rio_bus_type = { .name = "rapidio", .match = rio_match_bus, .dev_groups = rio_dev_groups, .bus_groups = rio_bus_groups, .probe = rio_device_probe, .remove = rio_device_remove, .shutdown = rio_device_shutdown, .uevent = rio_uevent, }; /** * 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) { int ret; ret = class_register(&rio_mport_class); if (!ret) { ret = bus_register(&rio_bus_type); if (ret) class_unregister(&rio_mport_class); } return ret; }


Alexandre Bounine2858.33%150.00%
Matt Porter2041.67%150.00%

postcore_initcall(rio_bus_init); EXPORT_SYMBOL_GPL(rio_register_driver); EXPORT_SYMBOL_GPL(rio_unregister_driver); EXPORT_SYMBOL_GPL(rio_bus_type); EXPORT_SYMBOL_GPL(rio_dev_get); EXPORT_SYMBOL_GPL(rio_dev_put);

Overall Contributors

Matt Porter59571.51%18.33%
Alexandre Bounine21726.08%541.67%
Russell King111.32%18.33%
Greg Kroah-Hartman40.48%216.67%
Randy Dunlap30.36%216.67%
Eugene Surovegin20.24%18.33%
Directory: drivers/rapidio
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