drivers/net/ethernet/mellanox/mlxfw/mlxfw_mfa2_file.h

   1 /*
   2  * drivers/net/ethernet/mellanox/mlxfw/mlxfw_mfa2_file.h
   3  * Copyright (c) 2017 Mellanox Technologies. All rights reserved.
   4  * Copyright (c) 2017 Yotam Gigi <yotamg@mellanox.com>
   5  *
   6  * Redistribution and use in source and binary forms, with or without
   7  * modification, are permitted provided that the following conditions are met:
   8  *
   9  * 1. Redistributions of source code must retain the above copyright
  10  *    notice, this list of conditions and the following disclaimer.
  11  * 2. Redistributions in binary form must reproduce the above copyright
  12  *    notice, this list of conditions and the following disclaimer in the
  13  *    documentation and/or other materials provided with the distribution.
  14  * 3. Neither the names of the copyright holders nor the names of its
  15  *    contributors may be used to endorse or promote products derived from
  16  *    this software without specific prior written permission.
  17  *
  18  * Alternatively, this software may be distributed under the terms of the
  19  * GNU General Public License ("GPL") version 2 as published by the Free
  20  * Software Foundation.
  21  *
  22  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  23  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  24  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  25  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
  26  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  27  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  28  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  29  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  30  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  31  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  32  * POSSIBILITY OF SUCH DAMAGE.
  33  */
  34
  35 #ifndef _MLXFW_MFA2_FILE_H
  36 #define _MLXFW_MFA2_FILE_H
  37
  38 #include <linux/firmware.h>
  39 #include <linux/kernel.h>
  40
  41 struct mlxfw_mfa2_file {
  42         const struct firmware *fw;
  43         const struct mlxfw_mfa2_tlv *first_dev;
  44         u16 dev_count;
  45         const struct mlxfw_mfa2_tlv *first_component;
  46         u16 component_count;
  47         const void *cb; /* components block */
  48         u32 cb_archive_size; /* size of compressed components block */
  49 };
  50
  51 static inline bool mlxfw_mfa2_valid_ptr(const struct mlxfw_mfa2_file *mfa2_file,
  52                                         const void *ptr)
  53 {
  54         const void *valid_to = mfa2_file->fw->data + mfa2_file->fw->size;
  55         const void *valid_from = mfa2_file->fw->data;
  56
  57         return ptr > valid_from && ptr < valid_to;
  58 }
  59
  60 #endif