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 "opt_rss.h" 29 #include "opt_ratelimit.h" 30 31 #include <linux/kernel.h> 32 #include <linux/module.h> 33 #include <dev/mlx5/driver.h> 34 #include <dev/mlx5/mlx5_core/mlx5_core.h> 35 36 static int mlx5_relaxed_ordering_write; 37 SYSCTL_INT(_hw_mlx5, OID_AUTO, relaxed_ordering_write, CTLFLAG_RWTUN, 38 &mlx5_relaxed_ordering_write, 0, 39 "Set to enable relaxed ordering for PCIe writes"); 40 41 void mlx5_init_mr_table(struct mlx5_core_dev *dev) 42 { 43 struct mlx5_mr_table *table = &dev->priv.mr_table; 44 45 memset(table, 0, sizeof(*table)); 46 spin_lock_init(&table->lock); 47 INIT_RADIX_TREE(&table->tree, GFP_ATOMIC); 48 } 49 50 void mlx5_cleanup_mr_table(struct mlx5_core_dev *dev) 51 { 52 } 53 54 int mlx5_core_create_mkey_cb(struct mlx5_core_dev *dev, 55 struct mlx5_core_mkey *mkey, 56 struct mlx5_async_ctx *async_ctx, u32 *in, 57 int inlen, u32 *out, int outlen, 58 mlx5_async_cbk_t callback, 59 struct mlx5_async_work *context) 60 { 61 struct mlx5_mr_table *table = &dev->priv.mr_table; 62 u32 lout[MLX5_ST_SZ_DW(create_mkey_out)] = {0}; 63 u32 mkey_index; 64 void *mkc; 65 unsigned long flags; 66 int err; 67 u8 key; 68 69 spin_lock_irq(&dev->priv.mkey_lock); 70 key = dev->priv.mkey_key++; 71 spin_unlock_irq(&dev->priv.mkey_lock); 72 mkc = MLX5_ADDR_OF(create_mkey_in, in, memory_key_mkey_entry); 73 MLX5_SET(create_mkey_in, in, opcode, MLX5_CMD_OP_CREATE_MKEY); 74 MLX5_SET(mkc, mkc, mkey_7_0, key); 75 76 if (mlx5_relaxed_ordering_write != 0) { 77 if (MLX5_CAP_GEN(dev, relaxed_ordering_write)) 78 MLX5_SET(mkc, mkc, relaxed_ordering_write, 1); 79 else 80 return (-EPROTONOSUPPORT); 81 } 82 83 if (callback) 84 return mlx5_cmd_exec_cb(async_ctx, in, inlen, out, outlen, 85 callback, context); 86 87 err = mlx5_cmd_exec(dev, in, inlen, lout, sizeof(lout)); 88 if (err) { 89 mlx5_core_dbg(dev, "cmd exec failed %d\n", err); 90 return err; 91 } 92 93 mkey_index = MLX5_GET(create_mkey_out, lout, mkey_index); 94 mkey->iova = MLX5_GET64(mkc, mkc, start_addr); 95 mkey->size = MLX5_GET64(mkc, mkc, len); 96 mkey->key = mlx5_idx_to_mkey(mkey_index) | key; 97 mkey->pd = MLX5_GET(mkc, mkc, pd); 98 99 mlx5_core_dbg(dev, "out 0x%x, key 0x%x, mkey 0x%x\n", 100 mkey_index, key, mkey->key); 101 102 /* connect to MR tree */ 103 spin_lock_irqsave(&table->lock, flags); 104 err = radix_tree_insert(&table->tree, mlx5_mkey_to_idx(mkey->key), mkey); 105 spin_unlock_irqrestore(&table->lock, flags); 106 if (err) { 107 mlx5_core_warn(dev, "failed radix tree insert of mr 0x%x, %d\n", 108 mkey->key, err); 109 mlx5_core_destroy_mkey(dev, mkey); 110 } 111 112 return err; 113 } 114 EXPORT_SYMBOL(mlx5_core_create_mkey_cb); 115 116 int mlx5_core_create_mkey(struct mlx5_core_dev *dev, 117 struct mlx5_core_mkey *mkey, 118 u32 *in, int inlen) 119 { 120 return mlx5_core_create_mkey_cb(dev, mkey, NULL, in, inlen, 121 NULL, 0, NULL, NULL); 122 } 123 EXPORT_SYMBOL(mlx5_core_create_mkey); 124 125 int mlx5_core_destroy_mkey(struct mlx5_core_dev *dev, struct mlx5_core_mkey *mkey) 126 { 127 struct mlx5_mr_table *table = &dev->priv.mr_table; 128 u32 out[MLX5_ST_SZ_DW(destroy_mkey_out)] = {0}; 129 u32 in[MLX5_ST_SZ_DW(destroy_mkey_in)] = {0}; 130 struct mlx5_core_mkey *deleted_mr; 131 unsigned long flags; 132 133 spin_lock_irqsave(&table->lock, flags); 134 deleted_mr = radix_tree_delete(&table->tree, mlx5_mkey_to_idx(mkey->key)); 135 spin_unlock_irqrestore(&table->lock, flags); 136 if (!deleted_mr) { 137 mlx5_core_warn(dev, "failed radix tree delete of mr 0x%x\n", mkey->key); 138 return -ENOENT; 139 } 140 141 MLX5_SET(destroy_mkey_in, in, opcode, MLX5_CMD_OP_DESTROY_MKEY); 142 MLX5_SET(destroy_mkey_in, in, mkey_index, mlx5_mkey_to_idx(mkey->key)); 143 144 return mlx5_cmd_exec(dev, in, sizeof(in), out, sizeof(out)); 145 } 146 EXPORT_SYMBOL(mlx5_core_destroy_mkey); 147 148 int mlx5_core_query_mkey(struct mlx5_core_dev *dev, struct mlx5_core_mkey *mkey, 149 u32 *out, int outlen) 150 { 151 u32 in[MLX5_ST_SZ_DW(query_mkey_in)] = {0}; 152 153 memset(out, 0, outlen); 154 MLX5_SET(query_mkey_in, in, opcode, MLX5_CMD_OP_QUERY_MKEY); 155 MLX5_SET(query_mkey_in, in, mkey_index, mlx5_mkey_to_idx(mkey->key)); 156 157 return mlx5_cmd_exec(dev, in, sizeof(in), out, outlen); 158 } 159 EXPORT_SYMBOL(mlx5_core_query_mkey); 160 161 int mlx5_core_dump_fill_mkey(struct mlx5_core_dev *dev, struct mlx5_core_mkey *_mkey, 162 u32 *mkey) 163 { 164 u32 out[MLX5_ST_SZ_DW(query_special_contexts_out)] = {0}; 165 u32 in[MLX5_ST_SZ_DW(query_special_contexts_in)] = {0}; 166 int err; 167 168 MLX5_SET(query_special_contexts_in, in, opcode, 169 MLX5_CMD_OP_QUERY_SPECIAL_CONTEXTS); 170 err = mlx5_cmd_exec(dev, in, sizeof(in), out, sizeof(out)); 171 if (!err) 172 *mkey = MLX5_GET(query_special_contexts_out, out, dump_fill_mkey); 173 174 return err; 175 } 176 EXPORT_SYMBOL(mlx5_core_dump_fill_mkey); 177 178 static inline u32 mlx5_get_psv(u32 *out, int psv_index) 179 { 180 switch (psv_index) { 181 case 1: return MLX5_GET(create_psv_out, out, psv1_index); 182 case 2: return MLX5_GET(create_psv_out, out, psv2_index); 183 case 3: return MLX5_GET(create_psv_out, out, psv3_index); 184 default: return MLX5_GET(create_psv_out, out, psv0_index); 185 } 186 } 187 188 int mlx5_core_create_psv(struct mlx5_core_dev *dev, u32 pdn, 189 int npsvs, u32 *sig_index) 190 { 191 u32 out[MLX5_ST_SZ_DW(create_psv_out)] = {0}; 192 u32 in[MLX5_ST_SZ_DW(create_psv_in)] = {0}; 193 int i, err; 194 195 if (npsvs > MLX5_MAX_PSVS) 196 return -EINVAL; 197 198 MLX5_SET(create_psv_in, in, opcode, MLX5_CMD_OP_CREATE_PSV); 199 MLX5_SET(create_psv_in, in, pd, pdn); 200 MLX5_SET(create_psv_in, in, num_psv, npsvs); 201 err = mlx5_cmd_exec(dev, in, sizeof(in), out, sizeof(out)); 202 if (err) { 203 mlx5_core_err(dev, "create_psv cmd exec failed %d\n", err); 204 return err; 205 } 206 207 for (i = 0; i < npsvs; i++) 208 sig_index[i] = mlx5_get_psv(out, i); 209 210 return err; 211 } 212 EXPORT_SYMBOL(mlx5_core_create_psv); 213 214 int mlx5_core_destroy_psv(struct mlx5_core_dev *dev, int psv_num) 215 { 216 u32 out[MLX5_ST_SZ_DW(destroy_psv_out)] = {0}; 217 u32 in[MLX5_ST_SZ_DW(destroy_psv_in)] = {0}; 218 219 MLX5_SET(destroy_psv_in, in, opcode, MLX5_CMD_OP_DESTROY_PSV); 220 MLX5_SET(destroy_psv_in, in, psvn, psv_num); 221 return mlx5_cmd_exec(dev, in, sizeof(in), out, sizeof(out)); 222 } 223 EXPORT_SYMBOL(mlx5_core_destroy_psv); 224