2 * Copyright (c) 2013, Mellanox Technologies inc. All rights reserved.
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:
10 * Redistribution and use in source and binary forms, with or
11 * without modification, are permitted provided that the following
14 * - Redistributions of source code must retain the above
15 * copyright notice, this list of conditions and the following
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.
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
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"
39 void mlx5_init_mr_table(struct mlx5_core_dev *dev)
41 struct mlx5_mr_table *table = &dev->priv.mr_table;
43 rwlock_init(&table->lock);
44 INIT_RADIX_TREE(&table->tree, GFP_ATOMIC);
47 void mlx5_cleanup_mr_table(struct mlx5_core_dev *dev)
51 int mlx5_core_create_mkey(struct mlx5_core_dev *dev, struct mlx5_core_mr *mr,
52 struct mlx5_create_mkey_mbox_in *in, int inlen,
53 mlx5_cmd_cbk_t callback, void *context,
54 struct mlx5_create_mkey_mbox_out *out)
56 struct mlx5_mr_table *table = &dev->priv.mr_table;
57 struct mlx5_create_mkey_mbox_out lout;
61 memset(&lout, 0, sizeof(lout));
62 spin_lock_irq(&dev->priv.mkey_lock);
63 key = dev->priv.mkey_key++;
64 spin_unlock_irq(&dev->priv.mkey_lock);
65 in->seg.qpn_mkey7_0 |= cpu_to_be32(key);
66 in->hdr.opcode = cpu_to_be16(MLX5_CMD_OP_CREATE_MKEY);
68 err = mlx5_cmd_exec_cb(dev, in, inlen, out, sizeof(*out),
72 err = mlx5_cmd_exec(dev, in, inlen, &lout, sizeof(lout));
76 mlx5_core_dbg(dev, "cmd exec failed %d\n", err);
80 if (lout.hdr.status) {
81 mlx5_core_dbg(dev, "status %d\n", lout.hdr.status);
82 return mlx5_cmd_status_to_err(&lout.hdr);
85 mr->iova = be64_to_cpu(in->seg.start_addr);
86 mr->size = be64_to_cpu(in->seg.len);
87 mr->key = mlx5_idx_to_mkey(be32_to_cpu(lout.mkey) & 0xffffff) | key;
88 mr->pd = be32_to_cpu(in->seg.flags_pd) & 0xffffff;
90 mlx5_core_dbg(dev, "out 0x%x, key 0x%x, mkey 0x%x\n",
91 be32_to_cpu(lout.mkey), key, mr->key);
93 /* connect to MR tree */
94 write_lock_irq(&table->lock);
95 err = radix_tree_insert(&table->tree, mlx5_base_mkey(mr->key), mr);
96 write_unlock_irq(&table->lock);
100 EXPORT_SYMBOL(mlx5_core_create_mkey);
102 int mlx5_core_destroy_mkey(struct mlx5_core_dev *dev, struct mlx5_core_mr *mr)
104 struct mlx5_mr_table *table = &dev->priv.mr_table;
105 struct mlx5_destroy_mkey_mbox_in in;
106 struct mlx5_destroy_mkey_mbox_out out;
110 memset(&in, 0, sizeof(in));
111 memset(&out, 0, sizeof(out));
113 in.hdr.opcode = cpu_to_be16(MLX5_CMD_OP_DESTROY_MKEY);
114 in.mkey = cpu_to_be32(mlx5_mkey_to_idx(mr->key));
115 err = mlx5_cmd_exec(dev, &in, sizeof(in), &out, sizeof(out));
120 return mlx5_cmd_status_to_err(&out.hdr);
122 write_lock_irqsave(&table->lock, flags);
123 radix_tree_delete(&table->tree, mlx5_base_mkey(mr->key));
124 write_unlock_irqrestore(&table->lock, flags);
128 EXPORT_SYMBOL(mlx5_core_destroy_mkey);
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)
133 struct mlx5_destroy_mkey_mbox_in in;
136 memset(&in, 0, sizeof(in));
137 memset(out, 0, outlen);
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);
146 return mlx5_cmd_status_to_err(&out->hdr);
150 EXPORT_SYMBOL(mlx5_core_query_mkey);
152 int mlx5_core_dump_fill_mkey(struct mlx5_core_dev *dev, struct mlx5_core_mr *mr,
155 struct mlx5_query_special_ctxs_mbox_in in;
156 struct mlx5_query_special_ctxs_mbox_out out;
159 memset(&in, 0, sizeof(in));
160 memset(&out, 0, sizeof(out));
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));
168 return mlx5_cmd_status_to_err(&out.hdr);
170 *mkey = be32_to_cpu(out.dump_fill_mkey);
174 EXPORT_SYMBOL(mlx5_core_dump_fill_mkey);
176 int mlx5_core_create_psv(struct mlx5_core_dev *dev, u32 pdn,
177 int npsvs, u32 *sig_index)
179 struct mlx5_allocate_psv_in in;
180 struct mlx5_allocate_psv_out out;
183 if (npsvs > MLX5_MAX_PSVS)
186 memset(&in, 0, sizeof(in));
187 memset(&out, 0, sizeof(out));
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));
193 mlx5_core_err(dev, "cmd exec failed %d\n", err);
197 if (out.hdr.status) {
198 mlx5_core_err(dev, "create_psv bad status %d\n",
200 return mlx5_cmd_status_to_err(&out.hdr);
203 for (i = 0; i < npsvs; i++)
204 sig_index[i] = be32_to_cpu(out.psv_idx[i]) & 0xffffff;
208 EXPORT_SYMBOL(mlx5_core_create_psv);
210 int mlx5_core_destroy_psv(struct mlx5_core_dev *dev, int psv_num)
212 struct mlx5_destroy_psv_in in;
213 struct mlx5_destroy_psv_out out;
216 memset(&in, 0, sizeof(in));
217 memset(&out, 0, sizeof(out));
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));
223 mlx5_core_err(dev, "destroy_psv cmd exec failed %d\n", err);
227 if (out.hdr.status) {
228 mlx5_core_err(dev, "destroy_psv bad status %d\n",
230 err = mlx5_cmd_status_to_err(&out.hdr);
237 EXPORT_SYMBOL(mlx5_core_destroy_psv);