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1/*2 * Copyright (c) 2013-2015, Mellanox Technologies. All rights reserved.3 *4 * This software is available to you under a choice of one of two5 * licenses. You may choose to be licensed under the terms of the GNU6 * General Public License (GPL) Version 2, available from the file7 * COPYING in the main directory of this source tree, or the8 * OpenIB.org BSD license below:9 *10 * Redistribution and use in source and binary forms, with or11 * without modification, are permitted provided that the following12 * conditions are met:13 *14 * - Redistributions of source code must retain the above15 * copyright notice, this list of conditions and the following16 * disclaimer.17 *18 * - Redistributions in binary form must reproduce the above19 * copyright notice, this list of conditions and the following20 * disclaimer in the documentation and/or other materials21 * 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 OF25 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND26 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS27 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN28 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN29 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE30 * SOFTWARE.31 */32 33#include <linux/kernel.h>34#include <linux/mlx5/driver.h>35#include <linux/mlx5/qp.h>36#include "mlx5_core.h"37 38int mlx5_core_create_mkey(struct mlx5_core_dev *dev, u32 *mkey, u32 *in,39 int inlen)40{41 u32 lout[MLX5_ST_SZ_DW(create_mkey_out)] = {};42 u32 mkey_index;43 int err;44 45 MLX5_SET(create_mkey_in, in, opcode, MLX5_CMD_OP_CREATE_MKEY);46 47 err = mlx5_cmd_exec(dev, in, inlen, lout, sizeof(lout));48 if (err)49 return err;50 51 mkey_index = MLX5_GET(create_mkey_out, lout, mkey_index);52 *mkey = MLX5_GET(create_mkey_in, in, memory_key_mkey_entry.mkey_7_0) |53 mlx5_idx_to_mkey(mkey_index);54 55 mlx5_core_dbg(dev, "out 0x%x, mkey 0x%x\n", mkey_index, *mkey);56 return 0;57}58EXPORT_SYMBOL(mlx5_core_create_mkey);59 60int mlx5_core_destroy_mkey(struct mlx5_core_dev *dev, u32 mkey)61{62 u32 in[MLX5_ST_SZ_DW(destroy_mkey_in)] = {};63 64 MLX5_SET(destroy_mkey_in, in, opcode, MLX5_CMD_OP_DESTROY_MKEY);65 MLX5_SET(destroy_mkey_in, in, mkey_index, mlx5_mkey_to_idx(mkey));66 return mlx5_cmd_exec_in(dev, destroy_mkey, in);67}68EXPORT_SYMBOL(mlx5_core_destroy_mkey);69 70int mlx5_core_query_mkey(struct mlx5_core_dev *dev, u32 mkey, u32 *out,71 int outlen)72{73 u32 in[MLX5_ST_SZ_DW(query_mkey_in)] = {};74 75 memset(out, 0, outlen);76 MLX5_SET(query_mkey_in, in, opcode, MLX5_CMD_OP_QUERY_MKEY);77 MLX5_SET(query_mkey_in, in, mkey_index, mlx5_mkey_to_idx(mkey));78 return mlx5_cmd_exec(dev, in, sizeof(in), out, outlen);79}80EXPORT_SYMBOL(mlx5_core_query_mkey);81 82static inline u32 mlx5_get_psv(u32 *out, int psv_index)83{84 switch (psv_index) {85 case 1: return MLX5_GET(create_psv_out, out, psv1_index);86 case 2: return MLX5_GET(create_psv_out, out, psv2_index);87 case 3: return MLX5_GET(create_psv_out, out, psv3_index);88 default: return MLX5_GET(create_psv_out, out, psv0_index);89 }90}91 92int mlx5_core_create_psv(struct mlx5_core_dev *dev, u32 pdn,93 int npsvs, u32 *sig_index)94{95 u32 out[MLX5_ST_SZ_DW(create_psv_out)] = {};96 u32 in[MLX5_ST_SZ_DW(create_psv_in)] = {};97 int i, err;98 99 if (npsvs > MLX5_MAX_PSVS)100 return -EINVAL;101 102 MLX5_SET(create_psv_in, in, opcode, MLX5_CMD_OP_CREATE_PSV);103 MLX5_SET(create_psv_in, in, pd, pdn);104 MLX5_SET(create_psv_in, in, num_psv, npsvs);105 106 err = mlx5_cmd_exec_inout(dev, create_psv, in, out);107 if (err)108 return err;109 110 for (i = 0; i < npsvs; i++)111 sig_index[i] = mlx5_get_psv(out, i);112 113 return err;114}115EXPORT_SYMBOL(mlx5_core_create_psv);116 117int mlx5_core_destroy_psv(struct mlx5_core_dev *dev, int psv_num)118{119 u32 in[MLX5_ST_SZ_DW(destroy_psv_in)] = {};120 121 MLX5_SET(destroy_psv_in, in, opcode, MLX5_CMD_OP_DESTROY_PSV);122 MLX5_SET(destroy_psv_in, in, psvn, psv_num);123 return mlx5_cmd_exec_in(dev, destroy_psv, in);124}125EXPORT_SYMBOL(mlx5_core_destroy_psv);126 127__be32 mlx5_core_get_terminate_scatter_list_mkey(struct mlx5_core_dev *dev)128{129 u32 out[MLX5_ST_SZ_DW(query_special_contexts_out)] = {};130 u32 in[MLX5_ST_SZ_DW(query_special_contexts_in)] = {};131 u32 mkey;132 133 if (!MLX5_CAP_GEN(dev, terminate_scatter_list_mkey))134 return MLX5_TERMINATE_SCATTER_LIST_LKEY;135 136 MLX5_SET(query_special_contexts_in, in, opcode,137 MLX5_CMD_OP_QUERY_SPECIAL_CONTEXTS);138 if (mlx5_cmd_exec_inout(dev, query_special_contexts, in, out))139 return MLX5_TERMINATE_SCATTER_LIST_LKEY;140 141 mkey = MLX5_GET(query_special_contexts_out, out,142 terminate_scatter_list_mkey);143 return cpu_to_be32(mkey);144}145EXPORT_SYMBOL(mlx5_core_get_terminate_scatter_list_mkey);146