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 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 <linux/kernel.h> 34 #include <linux/mlx5/driver.h> 35 #include <linux/mlx5/qp.h> 36 #include "mlx5_core.h" 37 38 int 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 } 58 EXPORT_SYMBOL(mlx5_core_create_mkey); 59 60 int 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 } 68 EXPORT_SYMBOL(mlx5_core_destroy_mkey); 69 70 int 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 } 80 EXPORT_SYMBOL(mlx5_core_query_mkey); 81 82 static 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 92 int 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 } 115 EXPORT_SYMBOL(mlx5_core_create_psv); 116 117 int 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 } 125 EXPORT_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 } 145 EXPORT_SYMBOL(mlx5_core_get_terminate_scatter_list_mkey); 146