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 "mlx5_core.h" 36 37 int mlx5_core_create_mkey(struct mlx5_core_dev *dev, u32 *mkey, u32 *in, 38 int inlen) 39 { 40 u32 lout[MLX5_ST_SZ_DW(create_mkey_out)] = {}; 41 u32 mkey_index; 42 int err; 43 44 MLX5_SET(create_mkey_in, in, opcode, MLX5_CMD_OP_CREATE_MKEY); 45 46 err = mlx5_cmd_exec(dev, in, inlen, lout, sizeof(lout)); 47 if (err) 48 return err; 49 50 mkey_index = MLX5_GET(create_mkey_out, lout, mkey_index); 51 *mkey = MLX5_GET(create_mkey_in, in, memory_key_mkey_entry.mkey_7_0) | 52 mlx5_idx_to_mkey(mkey_index); 53 54 mlx5_core_dbg(dev, "out 0x%x, mkey 0x%x\n", mkey_index, *mkey); 55 return 0; 56 } 57 EXPORT_SYMBOL(mlx5_core_create_mkey); 58 59 int mlx5_core_destroy_mkey(struct mlx5_core_dev *dev, u32 mkey) 60 { 61 u32 in[MLX5_ST_SZ_DW(destroy_mkey_in)] = {}; 62 63 MLX5_SET(destroy_mkey_in, in, opcode, MLX5_CMD_OP_DESTROY_MKEY); 64 MLX5_SET(destroy_mkey_in, in, mkey_index, mlx5_mkey_to_idx(mkey)); 65 return mlx5_cmd_exec_in(dev, destroy_mkey, in); 66 } 67 EXPORT_SYMBOL(mlx5_core_destroy_mkey); 68 69 int mlx5_core_query_mkey(struct mlx5_core_dev *dev, u32 mkey, u32 *out, 70 int outlen) 71 { 72 u32 in[MLX5_ST_SZ_DW(query_mkey_in)] = {}; 73 74 memset(out, 0, outlen); 75 MLX5_SET(query_mkey_in, in, opcode, MLX5_CMD_OP_QUERY_MKEY); 76 MLX5_SET(query_mkey_in, in, mkey_index, mlx5_mkey_to_idx(mkey)); 77 return mlx5_cmd_exec(dev, in, sizeof(in), out, outlen); 78 } 79 EXPORT_SYMBOL(mlx5_core_query_mkey); 80 81 static inline u32 mlx5_get_psv(u32 *out, int psv_index) 82 { 83 switch (psv_index) { 84 case 1: return MLX5_GET(create_psv_out, out, psv1_index); 85 case 2: return MLX5_GET(create_psv_out, out, psv2_index); 86 case 3: return MLX5_GET(create_psv_out, out, psv3_index); 87 default: return MLX5_GET(create_psv_out, out, psv0_index); 88 } 89 } 90 91 int mlx5_core_create_psv(struct mlx5_core_dev *dev, u32 pdn, 92 int npsvs, u32 *sig_index) 93 { 94 u32 out[MLX5_ST_SZ_DW(create_psv_out)] = {}; 95 u32 in[MLX5_ST_SZ_DW(create_psv_in)] = {}; 96 int i, err; 97 98 if (npsvs > MLX5_MAX_PSVS) 99 return -EINVAL; 100 101 MLX5_SET(create_psv_in, in, opcode, MLX5_CMD_OP_CREATE_PSV); 102 MLX5_SET(create_psv_in, in, pd, pdn); 103 MLX5_SET(create_psv_in, in, num_psv, npsvs); 104 105 err = mlx5_cmd_exec_inout(dev, create_psv, in, out); 106 if (err) 107 return err; 108 109 for (i = 0; i < npsvs; i++) 110 sig_index[i] = mlx5_get_psv(out, i); 111 112 return err; 113 } 114 EXPORT_SYMBOL(mlx5_core_create_psv); 115 116 int mlx5_core_destroy_psv(struct mlx5_core_dev *dev, int psv_num) 117 { 118 u32 in[MLX5_ST_SZ_DW(destroy_psv_in)] = {}; 119 120 MLX5_SET(destroy_psv_in, in, opcode, MLX5_CMD_OP_DESTROY_PSV); 121 MLX5_SET(destroy_psv_in, in, psvn, psv_num); 122 return mlx5_cmd_exec_in(dev, destroy_psv, in); 123 } 124 EXPORT_SYMBOL(mlx5_core_destroy_psv); 125