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 <linux/mlx5/cmd.h> 37 #include "mlx5_core.h" 38 39 int mlx5_core_create_mkey_cb(struct mlx5_core_dev *dev, 40 struct mlx5_core_mkey *mkey, 41 struct mlx5_async_ctx *async_ctx, u32 *in, 42 int inlen, u32 *out, int outlen, 43 mlx5_async_cbk_t callback, 44 struct mlx5_async_work *context) 45 { 46 u32 lout[MLX5_ST_SZ_DW(create_mkey_out)] = {0}; 47 u32 mkey_index; 48 void *mkc; 49 int err; 50 u8 key; 51 52 spin_lock_irq(&dev->priv.mkey_lock); 53 key = dev->priv.mkey_key++; 54 spin_unlock_irq(&dev->priv.mkey_lock); 55 mkc = MLX5_ADDR_OF(create_mkey_in, in, memory_key_mkey_entry); 56 57 MLX5_SET(create_mkey_in, in, opcode, MLX5_CMD_OP_CREATE_MKEY); 58 MLX5_SET(mkc, mkc, mkey_7_0, key); 59 mkey->key = key; 60 61 if (callback) 62 return mlx5_cmd_exec_cb(async_ctx, in, inlen, out, outlen, 63 callback, context); 64 65 err = mlx5_cmd_exec(dev, in, inlen, lout, sizeof(lout)); 66 if (err) 67 return err; 68 69 mkey_index = MLX5_GET(create_mkey_out, lout, mkey_index); 70 mkey->iova = MLX5_GET64(mkc, mkc, start_addr); 71 mkey->size = MLX5_GET64(mkc, mkc, len); 72 mkey->key |= mlx5_idx_to_mkey(mkey_index); 73 mkey->pd = MLX5_GET(mkc, mkc, pd); 74 75 mlx5_core_dbg(dev, "out 0x%x, key 0x%x, mkey 0x%x\n", 76 mkey_index, key, mkey->key); 77 return 0; 78 } 79 EXPORT_SYMBOL(mlx5_core_create_mkey_cb); 80 81 int mlx5_core_create_mkey(struct mlx5_core_dev *dev, 82 struct mlx5_core_mkey *mkey, 83 u32 *in, int inlen) 84 { 85 return mlx5_core_create_mkey_cb(dev, mkey, NULL, in, inlen, 86 NULL, 0, NULL, NULL); 87 } 88 EXPORT_SYMBOL(mlx5_core_create_mkey); 89 90 int mlx5_core_destroy_mkey(struct mlx5_core_dev *dev, 91 struct mlx5_core_mkey *mkey) 92 { 93 u32 out[MLX5_ST_SZ_DW(destroy_mkey_out)] = {0}; 94 u32 in[MLX5_ST_SZ_DW(destroy_mkey_in)] = {0}; 95 96 MLX5_SET(destroy_mkey_in, in, opcode, MLX5_CMD_OP_DESTROY_MKEY); 97 MLX5_SET(destroy_mkey_in, in, mkey_index, mlx5_mkey_to_idx(mkey->key)); 98 return mlx5_cmd_exec(dev, in, sizeof(in), out, sizeof(out)); 99 } 100 EXPORT_SYMBOL(mlx5_core_destroy_mkey); 101 102 int mlx5_core_query_mkey(struct mlx5_core_dev *dev, struct mlx5_core_mkey *mkey, 103 u32 *out, int outlen) 104 { 105 u32 in[MLX5_ST_SZ_DW(query_mkey_in)] = {0}; 106 107 memset(out, 0, outlen); 108 MLX5_SET(query_mkey_in, in, opcode, MLX5_CMD_OP_QUERY_MKEY); 109 MLX5_SET(query_mkey_in, in, mkey_index, mlx5_mkey_to_idx(mkey->key)); 110 return mlx5_cmd_exec(dev, in, sizeof(in), out, outlen); 111 } 112 EXPORT_SYMBOL(mlx5_core_query_mkey); 113 114 static inline u32 mlx5_get_psv(u32 *out, int psv_index) 115 { 116 switch (psv_index) { 117 case 1: return MLX5_GET(create_psv_out, out, psv1_index); 118 case 2: return MLX5_GET(create_psv_out, out, psv2_index); 119 case 3: return MLX5_GET(create_psv_out, out, psv3_index); 120 default: return MLX5_GET(create_psv_out, out, psv0_index); 121 } 122 } 123 124 int mlx5_core_create_psv(struct mlx5_core_dev *dev, u32 pdn, 125 int npsvs, u32 *sig_index) 126 { 127 u32 out[MLX5_ST_SZ_DW(create_psv_out)] = {0}; 128 u32 in[MLX5_ST_SZ_DW(create_psv_in)] = {0}; 129 int i, err; 130 131 if (npsvs > MLX5_MAX_PSVS) 132 return -EINVAL; 133 134 MLX5_SET(create_psv_in, in, opcode, MLX5_CMD_OP_CREATE_PSV); 135 MLX5_SET(create_psv_in, in, pd, pdn); 136 MLX5_SET(create_psv_in, in, num_psv, npsvs); 137 138 err = mlx5_cmd_exec(dev, in, sizeof(in), out, sizeof(out)); 139 if (err) 140 return err; 141 142 for (i = 0; i < npsvs; i++) 143 sig_index[i] = mlx5_get_psv(out, i); 144 145 return err; 146 } 147 EXPORT_SYMBOL(mlx5_core_create_psv); 148 149 int mlx5_core_destroy_psv(struct mlx5_core_dev *dev, int psv_num) 150 { 151 u32 out[MLX5_ST_SZ_DW(destroy_psv_out)] = {0}; 152 u32 in[MLX5_ST_SZ_DW(destroy_psv_in)] = {0}; 153 154 MLX5_SET(destroy_psv_in, in, opcode, MLX5_CMD_OP_DESTROY_PSV); 155 MLX5_SET(destroy_psv_in, in, psvn, psv_num); 156 return mlx5_cmd_exec(dev, in, sizeof(in), out, sizeof(out)); 157 } 158 EXPORT_SYMBOL(mlx5_core_destroy_psv); 159