linux-imx

// SPDX-License-Identifier: GPL-2.0

/*

 * Thunderbolt bus support

 *

 * Copyright (C) 2017, Intel Corporation

 * Author: Mika Westerberg <mika.westerberg@linux.intel.com>

 */

​

#include <linux/device.h>

#include <linux/dmar.h>

#include <linux/idr.h>

#include <linux/iommu.h>

#include <linux/module.h>

#include <linux/pm_runtime.h>

#include <linux/slab.h>

#include <linux/random.h>

#include <crypto/hash.h>

​

#include "tb.h"

​

static DEFINE_IDA(tb_domain_ida);

​

static bool match_service_id(const struct tb_service_id *id,

                 const struct tb_service *svc)

{

    if (id->match_flags & TBSVC_MATCH_PROTOCOL_KEY) {

        if (strcmp(id->protocol_key, svc->key))

            return false;

    }

​

    if (id->match_flags & TBSVC_MATCH_PROTOCOL_ID) {

        if (id->protocol_id != svc->prtcid)

            return false;

    }

​

    if (id->match_flags & TBSVC_MATCH_PROTOCOL_VERSION) {

        if (id->protocol_version != svc->prtcvers)

            return false;

    }

​

    if (id->match_flags & TBSVC_MATCH_PROTOCOL_VERSION) {

        if (id->protocol_revision != svc->prtcrevs)

            return false;

    }

​

    return true;

}

​

static const struct tb_service_id *__tb_service_match(struct device *dev,

                              struct device_driver *drv)

{

    struct tb_service_driver *driver;

    const struct tb_service_id *ids;

    struct tb_service *svc;

​

    svc = tb_to_service(dev);

    if (!svc)

        return NULL;

​

    driver = container_of(drv, struct tb_service_driver, driver);

    if (!driver->id_table)

        return NULL;

​