linux-imx

// SPDX-License-Identifier: GPL-2.0

/*

 * Driver for FPGA Management Engine (FME) Partial Reconfiguration

 *

 * Copyright (C) 2017-2018 Intel Corporation, Inc.

 *

 * Authors:

 *   Kang Luwei <luwei.kang@intel.com>

 *   Xiao Guangrong <guangrong.xiao@linux.intel.com>

 *   Wu Hao <hao.wu@intel.com>

 *   Joseph Grecco <joe.grecco@intel.com>

 *   Enno Luebbers <enno.luebbers@intel.com>

 *   Tim Whisonant <tim.whisonant@intel.com>

 *   Ananda Ravuri <ananda.ravuri@intel.com>

 *   Christopher Rauer <christopher.rauer@intel.com>

 *   Henry Mitchel <henry.mitchel@intel.com>

 */

​

#include <linux/types.h>

#include <linux/device.h>

#include <linux/vmalloc.h>

#include <linux/uaccess.h>

#include <linux/fpga/fpga-mgr.h>

#include <linux/fpga/fpga-bridge.h>

#include <linux/fpga/fpga-region.h>

#include <linux/fpga-dfl.h>

​

#include "dfl.h"

#include "dfl-fme.h"

#include "dfl-fme-pr.h"

​

static struct dfl_fme_region *

dfl_fme_region_find_by_port_id(struct dfl_fme *fme, int port_id)

{

    struct dfl_fme_region *fme_region;

​

    list_for_each_entry(fme_region, &fme->region_list, node)

        if (fme_region->port_id == port_id)

            return fme_region;

​

    return NULL;

}

​

static int dfl_fme_region_match(struct device *dev, const void *data)

{

    return dev->parent == data;

}

​

static struct fpga_region *dfl_fme_region_find(struct dfl_fme *fme, int port_id)

{

    struct dfl_fme_region *fme_region;

    struct fpga_region *region;

​

    fme_region = dfl_fme_region_find_by_port_id(fme, port_id);

    if (!fme_region)

        return NULL;

​

    region = fpga_region_class_find(NULL, &fme_region->region->dev,

                    dfl_fme_region_match);

    if (!region)

        return NULL;

​

    return region;