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 spin_lock_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 unsigned long flags; 53 int err; 54 u8 key; 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 spin_lock_irqsave(&table->lock, flags); 90 err = radix_tree_insert(&table->tree, mlx5_mkey_to_idx(mr->key), mr); 91 spin_unlock_irqrestore(&table->lock, flags); 92 if (err) { 93 mlx5_core_warn(dev, "failed radix tree insert of mr 0x%x, %d\n", 94 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 spin_lock_irqsave(&table->lock, flags); 113 deleted_mr = radix_tree_delete(&table->tree, mlx5_mkey_to_idx(mr->key)); 114 spin_unlock_irqrestore(&table->lock, flags); 115 if (!deleted_mr) { 116 mlx5_core_warn(dev, "failed radix tree delete of mr 0x%x\n", mr->key); 117 return -ENOENT; 118 } 119 120 MLX5_SET(destroy_mkey_in, in, opcode, MLX5_CMD_OP_DESTROY_MKEY); 121 MLX5_SET(destroy_mkey_in, in, mkey_index, mlx5_mkey_to_idx(mr->key)); 122 123 memset(out, 0, sizeof(out)); 124 return mlx5_cmd_exec_check_status(dev, in, sizeof(in), 125 out, sizeof(out)); 126 } 127 EXPORT_SYMBOL(mlx5_core_destroy_mkey); 128 129 int mlx5_core_query_mkey(struct mlx5_core_dev *dev, struct mlx5_core_mr *mr, 130 struct mlx5_query_mkey_mbox_out *out, int outlen) 131 { 132 struct mlx5_query_mkey_mbox_in in; 133 int err; 134 135 memset(&in, 0, sizeof(in)); 136 memset(out, 0, outlen); 137 138 in.hdr.opcode = cpu_to_be16(MLX5_CMD_OP_QUERY_MKEY); 139 in.mkey = cpu_to_be32(mlx5_mkey_to_idx(mr->key)); 140 err = mlx5_cmd_exec(dev, &in, sizeof(in), out, outlen); 141 if (err) 142 return err; 143 144 if (out->hdr.status) 145 return mlx5_cmd_status_to_err(&out->hdr); 146 147 return err; 148 } 149 EXPORT_SYMBOL(mlx5_core_query_mkey); 150 151 int mlx5_core_dump_fill_mkey(struct mlx5_core_dev *dev, struct mlx5_core_mr *mr, 152 u32 *mkey) 153 { 154 struct mlx5_query_special_ctxs_mbox_in in; 155 struct mlx5_query_special_ctxs_mbox_out out; 156 int err; 157 158 memset(&in, 0, sizeof(in)); 159 memset(&out, 0, sizeof(out)); 160 161 in.hdr.opcode = cpu_to_be16(MLX5_CMD_OP_QUERY_SPECIAL_CONTEXTS); 162 err = mlx5_cmd_exec(dev, &in, sizeof(in), &out, sizeof(out)); 163 if (err) 164 return err; 165 166 if (out.hdr.status) 167 return mlx5_cmd_status_to_err(&out.hdr); 168 169 *mkey = be32_to_cpu(out.dump_fill_mkey); 170 171 return err; 172 } 173 EXPORT_SYMBOL(mlx5_core_dump_fill_mkey); 174 175 int mlx5_core_create_psv(struct mlx5_core_dev *dev, u32 pdn, 176 int npsvs, u32 *sig_index) 177 { 178 struct mlx5_allocate_psv_in in; 179 struct mlx5_allocate_psv_out out; 180 int i, err; 181 182 if (npsvs > MLX5_MAX_PSVS) 183 return -EINVAL; 184 185 memset(&in, 0, sizeof(in)); 186 memset(&out, 0, sizeof(out)); 187 188 in.hdr.opcode = cpu_to_be16(MLX5_CMD_OP_CREATE_PSV); 189 in.npsv_pd = cpu_to_be32((npsvs << 28) | pdn); 190 err = mlx5_cmd_exec(dev, &in, sizeof(in), &out, sizeof(out)); 191 if (err) { 192 mlx5_core_err(dev, "cmd exec failed %d\n", err); 193 return err; 194 } 195 196 if (out.hdr.status) { 197 mlx5_core_err(dev, "create_psv bad status %d\n", 198 out.hdr.status); 199 return mlx5_cmd_status_to_err(&out.hdr); 200 } 201 202 for (i = 0; i < npsvs; i++) 203 sig_index[i] = be32_to_cpu(out.psv_idx[i]) & 0xffffff; 204 205 return err; 206 } 207 EXPORT_SYMBOL(mlx5_core_create_psv); 208 209 int mlx5_core_destroy_psv(struct mlx5_core_dev *dev, int psv_num) 210 { 211 struct mlx5_destroy_psv_in in; 212 struct mlx5_destroy_psv_out out; 213 int err; 214 215 memset(&in, 0, sizeof(in)); 216 memset(&out, 0, sizeof(out)); 217 218 in.psv_number = cpu_to_be32(psv_num); 219 in.hdr.opcode = cpu_to_be16(MLX5_CMD_OP_DESTROY_PSV); 220 err = mlx5_cmd_exec(dev, &in, sizeof(in), &out, sizeof(out)); 221 if (err) { 222 mlx5_core_err(dev, "destroy_psv cmd exec failed %d\n", err); 223 goto out; 224 } 225 226 if (out.hdr.status) { 227 mlx5_core_err(dev, "destroy_psv bad status %d\n", 228 out.hdr.status); 229 err = mlx5_cmd_status_to_err(&out.hdr); 230 goto out; 231 } 232 233 out: 234 return err; 235 } 236 EXPORT_SYMBOL(mlx5_core_destroy_psv); 237