1 /*- 2 * Copyright (c) 2013-2015, 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 void mlx5_init_mr_table(struct mlx5_core_dev *dev) 34 { 35 struct mlx5_mr_table *table = &dev->priv.mr_table; 36 37 rwlock_init(&table->lock); 38 INIT_RADIX_TREE(&table->tree, GFP_ATOMIC); 39 } 40 41 void mlx5_cleanup_mr_table(struct mlx5_core_dev *dev) 42 { 43 } 44 45 int mlx5_core_create_mkey(struct mlx5_core_dev *dev, struct mlx5_core_mr *mr, 46 struct mlx5_create_mkey_mbox_in *in, int inlen, 47 mlx5_cmd_cbk_t callback, void *context, 48 struct mlx5_create_mkey_mbox_out *out) 49 { 50 struct mlx5_mr_table *table = &dev->priv.mr_table; 51 struct mlx5_create_mkey_mbox_out lout; 52 int err; 53 u8 key; 54 unsigned long irql; 55 56 memset(&lout, 0, sizeof(lout)); 57 spin_lock_irq(&dev->priv.mkey_lock); 58 key = dev->priv.mkey_key++; 59 spin_unlock_irq(&dev->priv.mkey_lock); 60 in->seg.qpn_mkey7_0 |= cpu_to_be32(key); 61 in->hdr.opcode = cpu_to_be16(MLX5_CMD_OP_CREATE_MKEY); 62 if (callback) { 63 err = mlx5_cmd_exec_cb(dev, in, inlen, out, sizeof(*out), 64 callback, context); 65 return err; 66 } else { 67 err = mlx5_cmd_exec(dev, in, inlen, &lout, sizeof(lout)); 68 } 69 70 if (err) { 71 mlx5_core_dbg(dev, "cmd exec failed %d\n", err); 72 return err; 73 } 74 75 if (lout.hdr.status) { 76 mlx5_core_dbg(dev, "status %d\n", lout.hdr.status); 77 return mlx5_cmd_status_to_err(&lout.hdr); 78 } 79 80 mr->iova = be64_to_cpu(in->seg.start_addr); 81 mr->size = be64_to_cpu(in->seg.len); 82 mr->key = mlx5_idx_to_mkey(be32_to_cpu(lout.mkey) & 0xffffff) | key; 83 mr->pd = be32_to_cpu(in->seg.flags_pd) & 0xffffff; 84 85 mlx5_core_dbg(dev, "out 0x%x, key 0x%x, mkey 0x%x\n", 86 be32_to_cpu(lout.mkey), key, mr->key); 87 88 /* connect to MR tree */ 89 write_lock_irqsave(&table->lock, irql); 90 err = radix_tree_insert(&table->tree, mlx5_base_mkey(mr->key), mr); 91 write_unlock_irqrestore(&table->lock, irql); 92 if (err) { 93 mlx5_core_warn(dev, "failed radix tree insert of mr 0x%x, %d\n", 94 mlx5_base_mkey(mr->key), err); 95 mlx5_core_destroy_mkey(dev, mr); 96 } 97 98 return err; 99 } 100 EXPORT_SYMBOL(mlx5_core_create_mkey); 101 102 int mlx5_core_destroy_mkey(struct mlx5_core_dev *dev, struct mlx5_core_mr *mr) 103 { 104 struct mlx5_mr_table *table = &dev->priv.mr_table; 105 u32 in[MLX5_ST_SZ_DW(destroy_mkey_in)]; 106 u32 out[MLX5_ST_SZ_DW(destroy_mkey_out)]; 107 struct mlx5_core_mr *deleted_mr; 108 unsigned long flags; 109 110 memset(in, 0, sizeof(in)); 111 112 write_lock_irqsave(&table->lock, flags); 113 deleted_mr = radix_tree_delete(&table->tree, mlx5_base_mkey(mr->key)); 114 write_unlock_irqrestore(&table->lock, flags); 115 if (!deleted_mr) { 116 mlx5_core_warn(dev, "failed radix tree delete of mr 0x%x\n", 117 mlx5_base_mkey(mr->key)); 118 return -ENOENT; 119 } 120 121 MLX5_SET(destroy_mkey_in, in, opcode, MLX5_CMD_OP_DESTROY_MKEY); 122 MLX5_SET(destroy_mkey_in, in, mkey_index, mlx5_mkey_to_idx(mr->key)); 123 124 memset(out, 0, sizeof(out)); 125 return mlx5_cmd_exec_check_status(dev, in, sizeof(in), 126 out, sizeof(out)); 127 } 128 EXPORT_SYMBOL(mlx5_core_destroy_mkey); 129 130 int mlx5_core_query_mkey(struct mlx5_core_dev *dev, struct mlx5_core_mr *mr, 131 struct mlx5_query_mkey_mbox_out *out, int outlen) 132 { 133 struct mlx5_query_mkey_mbox_in in; 134 int err; 135 136 memset(&in, 0, sizeof(in)); 137 memset(out, 0, outlen); 138 139 in.hdr.opcode = cpu_to_be16(MLX5_CMD_OP_QUERY_MKEY); 140 in.mkey = cpu_to_be32(mlx5_mkey_to_idx(mr->key)); 141 err = mlx5_cmd_exec(dev, &in, sizeof(in), out, outlen); 142 if (err) 143 return err; 144 145 if (out->hdr.status) 146 return mlx5_cmd_status_to_err(&out->hdr); 147 148 return err; 149 } 150 EXPORT_SYMBOL(mlx5_core_query_mkey); 151 152 int mlx5_core_dump_fill_mkey(struct mlx5_core_dev *dev, struct mlx5_core_mr *mr, 153 u32 *mkey) 154 { 155 struct mlx5_query_special_ctxs_mbox_in in; 156 struct mlx5_query_special_ctxs_mbox_out out; 157 int err; 158 159 memset(&in, 0, sizeof(in)); 160 memset(&out, 0, sizeof(out)); 161 162 in.hdr.opcode = cpu_to_be16(MLX5_CMD_OP_QUERY_SPECIAL_CONTEXTS); 163 err = mlx5_cmd_exec(dev, &in, sizeof(in), &out, sizeof(out)); 164 if (err) 165 return err; 166 167 if (out.hdr.status) 168 return mlx5_cmd_status_to_err(&out.hdr); 169 170 *mkey = be32_to_cpu(out.dump_fill_mkey); 171 172 return err; 173 } 174 EXPORT_SYMBOL(mlx5_core_dump_fill_mkey); 175 176 int mlx5_core_create_psv(struct mlx5_core_dev *dev, u32 pdn, 177 int npsvs, u32 *sig_index) 178 { 179 struct mlx5_allocate_psv_in in; 180 struct mlx5_allocate_psv_out out; 181 int i, err; 182 183 if (npsvs > MLX5_MAX_PSVS) 184 return -EINVAL; 185 186 memset(&in, 0, sizeof(in)); 187 memset(&out, 0, sizeof(out)); 188 189 in.hdr.opcode = cpu_to_be16(MLX5_CMD_OP_CREATE_PSV); 190 in.npsv_pd = cpu_to_be32((npsvs << 28) | pdn); 191 err = mlx5_cmd_exec(dev, &in, sizeof(in), &out, sizeof(out)); 192 if (err) { 193 mlx5_core_err(dev, "cmd exec failed %d\n", err); 194 return err; 195 } 196 197 if (out.hdr.status) { 198 mlx5_core_err(dev, "create_psv bad status %d\n", 199 out.hdr.status); 200 return mlx5_cmd_status_to_err(&out.hdr); 201 } 202 203 for (i = 0; i < npsvs; i++) 204 sig_index[i] = be32_to_cpu(out.psv_idx[i]) & 0xffffff; 205 206 return err; 207 } 208 EXPORT_SYMBOL(mlx5_core_create_psv); 209 210 int mlx5_core_destroy_psv(struct mlx5_core_dev *dev, int psv_num) 211 { 212 struct mlx5_destroy_psv_in in; 213 struct mlx5_destroy_psv_out out; 214 int err; 215 216 memset(&in, 0, sizeof(in)); 217 memset(&out, 0, sizeof(out)); 218 219 in.psv_number = cpu_to_be32(psv_num); 220 in.hdr.opcode = cpu_to_be16(MLX5_CMD_OP_DESTROY_PSV); 221 err = mlx5_cmd_exec(dev, &in, sizeof(in), &out, sizeof(out)); 222 if (err) { 223 mlx5_core_err(dev, "destroy_psv cmd exec failed %d\n", err); 224 goto out; 225 } 226 227 if (out.hdr.status) { 228 mlx5_core_err(dev, "destroy_psv bad status %d\n", 229 out.hdr.status); 230 err = mlx5_cmd_status_to_err(&out.hdr); 231 goto out; 232 } 233 234 out: 235 return err; 236 } 237 EXPORT_SYMBOL(mlx5_core_destroy_psv); 238