1 /*- 2 * Copyright (c) 2013-2018, Mellanox Technologies, Ltd. All rights reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 1. Redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer. 9 * 2. Redistributions in binary form must reproduce the above copyright 10 * notice, this list of conditions and the following disclaimer in the 11 * documentation and/or other materials provided with the distribution. 12 * 13 * THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS `AS IS' AND 14 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 16 * ARE DISCLAIMED. IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE 17 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 18 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 19 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 20 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 21 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 22 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 23 * SUCH DAMAGE. 24 * 25 * $FreeBSD$ 26 */ 27 28 #include <linux/kernel.h> 29 #include <linux/module.h> 30 #include <dev/mlx5/driver.h> 31 #include "mlx5_core.h" 32 33 static int mlx5_relaxed_ordering_write; 34 SYSCTL_INT(_hw_mlx5, OID_AUTO, relaxed_ordering_write, CTLFLAG_RWTUN, 35 &mlx5_relaxed_ordering_write, 0, 36 "Set to enable relaxed ordering for PCIe writes"); 37 38 void mlx5_init_mr_table(struct mlx5_core_dev *dev) 39 { 40 struct mlx5_mr_table *table = &dev->priv.mr_table; 41 42 memset(table, 0, sizeof(*table)); 43 spin_lock_init(&table->lock); 44 INIT_RADIX_TREE(&table->tree, GFP_ATOMIC); 45 } 46 47 void mlx5_cleanup_mr_table(struct mlx5_core_dev *dev) 48 { 49 } 50 51 int mlx5_core_create_mkey_cb(struct mlx5_core_dev *dev, 52 struct mlx5_core_mkey *mkey, 53 struct mlx5_async_ctx *async_ctx, u32 *in, 54 int inlen, u32 *out, int outlen, 55 mlx5_async_cbk_t callback, 56 struct mlx5_async_work *context) 57 { 58 struct mlx5_mr_table *table = &dev->priv.mr_table; 59 u32 lout[MLX5_ST_SZ_DW(create_mkey_out)] = {0}; 60 u32 mkey_index; 61 void *mkc; 62 unsigned long flags; 63 int err; 64 u8 key; 65 66 spin_lock_irq(&dev->priv.mkey_lock); 67 key = dev->priv.mkey_key++; 68 spin_unlock_irq(&dev->priv.mkey_lock); 69 mkc = MLX5_ADDR_OF(create_mkey_in, in, memory_key_mkey_entry); 70 MLX5_SET(create_mkey_in, in, opcode, MLX5_CMD_OP_CREATE_MKEY); 71 MLX5_SET(mkc, mkc, mkey_7_0, key); 72 73 if (mlx5_relaxed_ordering_write != 0) { 74 if (MLX5_CAP_GEN(dev, relaxed_ordering_write)) 75 MLX5_SET(mkc, mkc, relaxed_ordering_write, 1); 76 else 77 return (-EPROTONOSUPPORT); 78 } 79 80 if (callback) 81 return mlx5_cmd_exec_cb(async_ctx, in, inlen, out, outlen, 82 callback, context); 83 84 err = mlx5_cmd_exec(dev, in, inlen, lout, sizeof(lout)); 85 if (err) { 86 mlx5_core_dbg(dev, "cmd exec failed %d\n", err); 87 return err; 88 } 89 90 mkey_index = MLX5_GET(create_mkey_out, lout, mkey_index); 91 mkey->iova = MLX5_GET64(mkc, mkc, start_addr); 92 mkey->size = MLX5_GET64(mkc, mkc, len); 93 mkey->key = mlx5_idx_to_mkey(mkey_index) | key; 94 mkey->pd = MLX5_GET(mkc, mkc, pd); 95 96 mlx5_core_dbg(dev, "out 0x%x, key 0x%x, mkey 0x%x\n", 97 mkey_index, key, mkey->key); 98 99 /* connect to MR tree */ 100 spin_lock_irqsave(&table->lock, flags); 101 err = radix_tree_insert(&table->tree, mlx5_mkey_to_idx(mkey->key), mkey); 102 spin_unlock_irqrestore(&table->lock, flags); 103 if (err) { 104 mlx5_core_warn(dev, "failed radix tree insert of mr 0x%x, %d\n", 105 mkey->key, err); 106 mlx5_core_destroy_mkey(dev, mkey); 107 } 108 109 return err; 110 } 111 EXPORT_SYMBOL(mlx5_core_create_mkey_cb); 112 113 int mlx5_core_create_mkey(struct mlx5_core_dev *dev, 114 struct mlx5_core_mkey *mkey, 115 u32 *in, int inlen) 116 { 117 return mlx5_core_create_mkey_cb(dev, mkey, NULL, in, inlen, 118 NULL, 0, NULL, NULL); 119 } 120 EXPORT_SYMBOL(mlx5_core_create_mkey); 121 122 int mlx5_core_destroy_mkey(struct mlx5_core_dev *dev, struct mlx5_core_mkey *mkey) 123 { 124 struct mlx5_mr_table *table = &dev->priv.mr_table; 125 u32 out[MLX5_ST_SZ_DW(destroy_mkey_out)] = {0}; 126 u32 in[MLX5_ST_SZ_DW(destroy_mkey_in)] = {0}; 127 struct mlx5_core_mkey *deleted_mr; 128 unsigned long flags; 129 130 spin_lock_irqsave(&table->lock, flags); 131 deleted_mr = radix_tree_delete(&table->tree, mlx5_mkey_to_idx(mkey->key)); 132 spin_unlock_irqrestore(&table->lock, flags); 133 if (!deleted_mr) { 134 mlx5_core_warn(dev, "failed radix tree delete of mr 0x%x\n", mkey->key); 135 return -ENOENT; 136 } 137 138 MLX5_SET(destroy_mkey_in, in, opcode, MLX5_CMD_OP_DESTROY_MKEY); 139 MLX5_SET(destroy_mkey_in, in, mkey_index, mlx5_mkey_to_idx(mkey->key)); 140 141 return mlx5_cmd_exec(dev, in, sizeof(in), out, sizeof(out)); 142 } 143 EXPORT_SYMBOL(mlx5_core_destroy_mkey); 144 145 int mlx5_core_query_mkey(struct mlx5_core_dev *dev, struct mlx5_core_mkey *mkey, 146 u32 *out, int outlen) 147 { 148 u32 in[MLX5_ST_SZ_DW(query_mkey_in)] = {0}; 149 150 memset(out, 0, outlen); 151 MLX5_SET(query_mkey_in, in, opcode, MLX5_CMD_OP_QUERY_MKEY); 152 MLX5_SET(query_mkey_in, in, mkey_index, mlx5_mkey_to_idx(mkey->key)); 153 154 return mlx5_cmd_exec(dev, in, sizeof(in), out, outlen); 155 } 156 EXPORT_SYMBOL(mlx5_core_query_mkey); 157 158 int mlx5_core_dump_fill_mkey(struct mlx5_core_dev *dev, struct mlx5_core_mkey *_mkey, 159 u32 *mkey) 160 { 161 u32 out[MLX5_ST_SZ_DW(query_special_contexts_out)] = {0}; 162 u32 in[MLX5_ST_SZ_DW(query_special_contexts_in)] = {0}; 163 int err; 164 165 MLX5_SET(query_special_contexts_in, in, opcode, 166 MLX5_CMD_OP_QUERY_SPECIAL_CONTEXTS); 167 err = mlx5_cmd_exec(dev, in, sizeof(in), out, sizeof(out)); 168 if (!err) 169 *mkey = MLX5_GET(query_special_contexts_out, out, dump_fill_mkey); 170 171 return err; 172 } 173 EXPORT_SYMBOL(mlx5_core_dump_fill_mkey); 174 175 static inline u32 mlx5_get_psv(u32 *out, int psv_index) 176 { 177 switch (psv_index) { 178 case 1: return MLX5_GET(create_psv_out, out, psv1_index); 179 case 2: return MLX5_GET(create_psv_out, out, psv2_index); 180 case 3: return MLX5_GET(create_psv_out, out, psv3_index); 181 default: return MLX5_GET(create_psv_out, out, psv0_index); 182 } 183 } 184 185 int mlx5_core_create_psv(struct mlx5_core_dev *dev, u32 pdn, 186 int npsvs, u32 *sig_index) 187 { 188 u32 out[MLX5_ST_SZ_DW(create_psv_out)] = {0}; 189 u32 in[MLX5_ST_SZ_DW(create_psv_in)] = {0}; 190 int i, err; 191 192 if (npsvs > MLX5_MAX_PSVS) 193 return -EINVAL; 194 195 MLX5_SET(create_psv_in, in, opcode, MLX5_CMD_OP_CREATE_PSV); 196 MLX5_SET(create_psv_in, in, pd, pdn); 197 MLX5_SET(create_psv_in, in, num_psv, npsvs); 198 err = mlx5_cmd_exec(dev, in, sizeof(in), out, sizeof(out)); 199 if (err) { 200 mlx5_core_err(dev, "create_psv cmd exec failed %d\n", err); 201 return err; 202 } 203 204 for (i = 0; i < npsvs; i++) 205 sig_index[i] = mlx5_get_psv(out, i); 206 207 return err; 208 } 209 EXPORT_SYMBOL(mlx5_core_create_psv); 210 211 int mlx5_core_destroy_psv(struct mlx5_core_dev *dev, int psv_num) 212 { 213 u32 out[MLX5_ST_SZ_DW(destroy_psv_out)] = {0}; 214 u32 in[MLX5_ST_SZ_DW(destroy_psv_in)] = {0}; 215 216 MLX5_SET(destroy_psv_in, in, opcode, MLX5_CMD_OP_DESTROY_PSV); 217 MLX5_SET(destroy_psv_in, in, psvn, psv_num); 218 return mlx5_cmd_exec(dev, in, sizeof(in), out, sizeof(out)); 219 } 220 EXPORT_SYMBOL(mlx5_core_destroy_psv); 221