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/module.h> 35 #include <linux/mlx5/driver.h> 36 #include "mlx5_core.h" 37 38 int mlx5_core_create_mkey(struct mlx5_core_dev *dev, 39 struct mlx5_core_mkey *mkey, 40 u32 *in, int inlen) 41 { 42 u32 lout[MLX5_ST_SZ_DW(create_mkey_out)] = {0}; 43 u32 mkey_index; 44 void *mkc; 45 int err; 46 47 MLX5_SET(create_mkey_in, in, opcode, MLX5_CMD_OP_CREATE_MKEY); 48 49 err = mlx5_cmd_exec(dev, in, inlen, lout, sizeof(lout)); 50 if (err) 51 return err; 52 53 mkc = MLX5_ADDR_OF(create_mkey_in, in, memory_key_mkey_entry); 54 mkey_index = MLX5_GET(create_mkey_out, lout, mkey_index); 55 mkey->iova = MLX5_GET64(mkc, mkc, start_addr); 56 mkey->size = MLX5_GET64(mkc, mkc, len); 57 mkey->key |= mlx5_idx_to_mkey(mkey_index); 58 mkey->pd = MLX5_GET(mkc, mkc, pd); 59 60 mlx5_core_dbg(dev, "out 0x%x, mkey 0x%x\n", mkey_index, mkey->key); 61 return 0; 62 } 63 EXPORT_SYMBOL(mlx5_core_create_mkey); 64 65 int mlx5_core_destroy_mkey(struct mlx5_core_dev *dev, 66 struct mlx5_core_mkey *mkey) 67 { 68 u32 out[MLX5_ST_SZ_DW(destroy_mkey_out)] = {0}; 69 u32 in[MLX5_ST_SZ_DW(destroy_mkey_in)] = {0}; 70 71 MLX5_SET(destroy_mkey_in, in, opcode, MLX5_CMD_OP_DESTROY_MKEY); 72 MLX5_SET(destroy_mkey_in, in, mkey_index, mlx5_mkey_to_idx(mkey->key)); 73 return mlx5_cmd_exec(dev, in, sizeof(in), out, sizeof(out)); 74 } 75 EXPORT_SYMBOL(mlx5_core_destroy_mkey); 76 77 int mlx5_core_query_mkey(struct mlx5_core_dev *dev, struct mlx5_core_mkey *mkey, 78 u32 *out, int outlen) 79 { 80 u32 in[MLX5_ST_SZ_DW(query_mkey_in)] = {0}; 81 82 memset(out, 0, outlen); 83 MLX5_SET(query_mkey_in, in, opcode, MLX5_CMD_OP_QUERY_MKEY); 84 MLX5_SET(query_mkey_in, in, mkey_index, mlx5_mkey_to_idx(mkey->key)); 85 return mlx5_cmd_exec(dev, in, sizeof(in), out, outlen); 86 } 87 EXPORT_SYMBOL(mlx5_core_query_mkey); 88 89 static inline u32 mlx5_get_psv(u32 *out, int psv_index) 90 { 91 switch (psv_index) { 92 case 1: return MLX5_GET(create_psv_out, out, psv1_index); 93 case 2: return MLX5_GET(create_psv_out, out, psv2_index); 94 case 3: return MLX5_GET(create_psv_out, out, psv3_index); 95 default: return MLX5_GET(create_psv_out, out, psv0_index); 96 } 97 } 98 99 int mlx5_core_create_psv(struct mlx5_core_dev *dev, u32 pdn, 100 int npsvs, u32 *sig_index) 101 { 102 u32 out[MLX5_ST_SZ_DW(create_psv_out)] = {0}; 103 u32 in[MLX5_ST_SZ_DW(create_psv_in)] = {0}; 104 int i, err; 105 106 if (npsvs > MLX5_MAX_PSVS) 107 return -EINVAL; 108 109 MLX5_SET(create_psv_in, in, opcode, MLX5_CMD_OP_CREATE_PSV); 110 MLX5_SET(create_psv_in, in, pd, pdn); 111 MLX5_SET(create_psv_in, in, num_psv, npsvs); 112 113 err = mlx5_cmd_exec(dev, in, sizeof(in), out, sizeof(out)); 114 if (err) 115 return err; 116 117 for (i = 0; i < npsvs; i++) 118 sig_index[i] = mlx5_get_psv(out, i); 119 120 return err; 121 } 122 EXPORT_SYMBOL(mlx5_core_create_psv); 123 124 int mlx5_core_destroy_psv(struct mlx5_core_dev *dev, int psv_num) 125 { 126 u32 out[MLX5_ST_SZ_DW(destroy_psv_out)] = {0}; 127 u32 in[MLX5_ST_SZ_DW(destroy_psv_in)] = {0}; 128 129 MLX5_SET(destroy_psv_in, in, opcode, MLX5_CMD_OP_DESTROY_PSV); 130 MLX5_SET(destroy_psv_in, in, psvn, psv_num); 131 return mlx5_cmd_exec(dev, in, sizeof(in), out, sizeof(out)); 132 } 133 EXPORT_SYMBOL(mlx5_core_destroy_psv); 134