drivers/infiniband/hw/mlx5/cmd.c

   1 /*
   2  * Copyright (c) 2017, Mellanox Technologies. All rights reserved.
   3  *
   4  * This software is available to you under a choice of one of two
   5  * licenses.  You may choose to be licensed under the terms of the GNU
   6  * General Public License (GPL) Version 2, available from the file
   7  * COPYING in the main directory of this source tree, or the
   8  * OpenIB.org BSD license below:
   9  *
  10  *     Redistribution and use in source and binary forms, with or
  11  *     without modification, are permitted provided that the following
  12  *     conditions are met:
  13  *
  14  *      - Redistributions of source code must retain the above
  15  *        copyright notice, this list of conditions and the following
  16  *        disclaimer.
  17  *
  18  *      - Redistributions in binary form must reproduce the above
  19  *        copyright notice, this list of conditions and the following
  20  *        disclaimer in the documentation and/or other materials
  21  *        provided with the distribution.
  22  *
  23  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  24  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  25  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  26  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  27  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  28  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  29  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  30  * SOFTWARE.
  31  */
  32
  33 #include "cmd.h"
  34
  35 int mlx5_cmd_null_mkey(struct mlx5_core_dev *dev, u32 *null_mkey)
  36 {
  37         u32 out[MLX5_ST_SZ_DW(query_special_contexts_out)] = {};
  38         u32 in[MLX5_ST_SZ_DW(query_special_contexts_in)]   = {};
  39         int err;
  40
  41         MLX5_SET(query_special_contexts_in, in, opcode,
  42                  MLX5_CMD_OP_QUERY_SPECIAL_CONTEXTS);
  43         err = mlx5_cmd_exec(dev, in, sizeof(in), out, sizeof(out));
  44         if (!err)
  45                 *null_mkey = MLX5_GET(query_special_contexts_out, out,
  46                                       null_mkey);
  47         return err;
  48 }
  49
  50 int mlx5_cmd_query_cong_params(struct mlx5_core_dev *dev, int cong_point,
  51                                void *out, int out_size)
  52 {
  53         u32 in[MLX5_ST_SZ_DW(query_cong_params_in)] = { };
  54
  55         MLX5_SET(query_cong_params_in, in, opcode,
  56                  MLX5_CMD_OP_QUERY_CONG_PARAMS);
  57         MLX5_SET(query_cong_params_in, in, cong_protocol, cong_point);
  58
  59         return mlx5_cmd_exec(dev, in, sizeof(in), out, out_size);
  60 }
  61
  62 int mlx5_cmd_modify_cong_params(struct mlx5_core_dev *dev,
  63                                 void *in, int in_size)
  64 {
  65         u32 out[MLX5_ST_SZ_DW(modify_cong_params_out)] = { };
  66
  67         return mlx5_cmd_exec(dev, in, in_size, out, sizeof(out));
  68 }