text: /*
   * Copyright (c) 2013-2015, Mellanox Technologies. All rights reserved.
   *
   * This software is available to you under a choice of one of two
   * licenses.  You may choose to be licensed under the terms of the GNU
   * General Public License (GPL) Version 2, available from the file
   * COPYING in the main directory of this source tree, or the
   * OpenIB.org BSD license below:
   *
   *     Redistribution and use in source and binary forms, with or
   *     without modification, are permitted provided that the following
   *     conditions are met:
   *
   *      - Redistributions of source code must retain the above
   *        copyright notice, this list of conditions and the following
   *        disclaimer.
   *
   *      - Redistributions in binary form must reproduce the above
   *        copyright notice, this list of conditions and the following
   *        disclaimer in the documentation and/or other materials
   *        provided with the distribution.
   *
   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
   * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
   * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
   * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
   * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
   * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
   * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
   * SOFTWARE.
   */
  
  #include <linux/kernel.h>
  #include <linux/module.h>
  #include <linux/mlx5/driver.h>
  #include "mlx5_core.h"
  
  int mlx5_core_create_mkey(struct mlx5_core_dev *dev,
  			  struct mlx5_core_mkey *mkey,
  			  u32 *in, int inlen)
  {
  	u32 lout[MLX5_ST_SZ_DW(create_mkey_out)] = {};
  	u32 mkey_index;
  	void *mkc;
  	int err;
  
  	MLX5_SET(create_mkey_in, in, opcode, MLX5_CMD_OP_CREATE_MKEY);
  
  	err = mlx5_cmd_exec(dev, in, inlen, lout, sizeof(lout));
  	if (err)
  		return err;
  
  	mkc = MLX5_ADDR_OF(create_mkey_in, in, memory_key_mkey_entry);
  	mkey_index = MLX5_GET(create_mkey_out, lout, mkey_index);
  	mkey->iova = MLX5_GET64(mkc, mkc, start_addr);
  	mkey->size = MLX5_GET64(mkc, mkc, len);
  	mkey->key = (u32)mlx5_mkey_variant(mkey->key) | mlx5_idx_to_mkey(mkey_index);
  	mkey->pd = MLX5_GET(mkc, mkc, pd);
  
  	mlx5_core_dbg(dev, "out 0x%x, mkey 0x%x\n", mkey_index, mkey->key);
  	return 0;
  }
  EXPORT_SYMBOL(mlx5_core_create_mkey);
  
  int mlx5_core_destroy_mkey(struct mlx5_core_dev *dev,
  			   struct mlx5_core_mkey *mkey)
  {
  	u32 in[MLX5_ST_SZ_DW(destroy_mkey_in)] = {};
  
  	MLX5_SET(destroy_mkey_in, in, opcode, MLX5_CMD_OP_DESTROY_MKEY);
  	MLX5_SET(destroy_mkey_in, in, mkey_index, mlx5_mkey_to_idx(mkey->key));
  	return mlx5_cmd_exec_in(dev, destroy_mkey, in);
  }
  EXPORT_SYMBOL(mlx5_core_destroy_mkey);
  
  int mlx5_core_query_mkey(struct mlx5_core_dev *dev, struct mlx5_core_mkey *mkey,
  			 u32 *out, int outlen)
  {
  	u32 in[MLX5_ST_SZ_DW(query_mkey_in)] = {};
  
  	memset(out, 0, outlen);
  	MLX5_SET(query_mkey_in, in, opcode, MLX5_CMD_OP_QUERY_MKEY);
  	MLX5_SET(query_mkey_in, in, mkey_index, mlx5_mkey_to_idx(mkey->key));
  	return mlx5_cmd_exec(dev, in, sizeof(in), out, outlen);
  }
  EXPORT_SYMBOL(mlx5_core_query_mkey);
  
  static inline u32 mlx5_get_psv(u32 *out, int psv_index)
  {
  	switch (psv_index) {
  	case 1: return MLX5_GET(create_psv_out, out, psv1_index);
  	case 2: return MLX5_GET(create_psv_out, out, psv2_index);
  	case 3: return MLX5_GET(create_psv_out, out, psv3_index);
  	default: return MLX5_GET(create_psv_out, out, psv0_index);
  	}
  }
  
  int mlx5_core_create_psv(struct mlx5_core_dev *dev, u32 pdn,
  			 int npsvs, u32 *sig_index)
  {
  	u32 out[MLX5_ST_SZ_DW(create_psv_out)] = {};
  	u32 in[MLX5_ST_SZ_DW(create_psv_in)] = {};
  	int i, err;
  
  	if (npsvs > MLX5_MAX_PSVS)
  		return -EINVAL;
  
  	MLX5_SET(create_psv_in, in, opcode, MLX5_CMD_OP_CREATE_PSV);
  	MLX5_SET(create_psv_in, in, pd, pdn);
  	MLX5_SET(create_psv_in, in, num_psv, npsvs);
  
  	err = mlx5_cmd_exec_inout(dev, create_psv, in, out);
  	if (err)
  		return err;
  
  	for (i = 0; i < npsvs; i++)
  		sig_index[i] = mlx5_get_psv(out, i);
  
  	return err;
  }
  EXPORT_SYMBOL(mlx5_core_create_psv);
  
  int mlx5_core_destroy_psv(struct mlx5_core_dev *dev, int psv_num)
  {
  	u32 in[MLX5_ST_SZ_DW(destroy_psv_in)] = {};
  
  	MLX5_SET(destroy_psv_in, in, opcode, MLX5_CMD_OP_DESTROY_PSV);
  	MLX5_SET(destroy_psv_in, in, psvn, psv_num);
  	return mlx5_cmd_exec_in(dev, destroy_psv, in);
  }
  EXPORT_SYMBOL(mlx5_core_destroy_psv);
  