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 int mlx5_core_create_mkey(struct mlx5_core_dev *dev, struct mlx5_core_mr *mr,
40 struct mlx5_create_mkey_mbox_in *in, int inlen)
42 struct mlx5_create_mkey_mbox_out out;
46 memset(&out, 0, sizeof(out));
47 spin_lock(&dev->priv.mkey_lock);
48 key = dev->priv.mkey_key++;
49 spin_unlock(&dev->priv.mkey_lock);
50 in->seg.qpn_mkey7_0 |= cpu_to_be32(key);
51 in->hdr.opcode = cpu_to_be16(MLX5_CMD_OP_CREATE_MKEY);
52 err = mlx5_cmd_exec(dev, in, inlen, &out, sizeof(out));
54 mlx5_core_dbg(dev, "cmd exec faile %d\n", err);
59 mlx5_core_dbg(dev, "status %d\n", out.hdr.status);
60 return mlx5_cmd_status_to_err(&out.hdr);
63 mr->key = mlx5_idx_to_mkey(be32_to_cpu(out.mkey) & 0xffffff) | key;
64 mlx5_core_dbg(dev, "out 0x%x, key 0x%x, mkey 0x%x\n", be32_to_cpu(out.mkey), key, mr->key);
68 EXPORT_SYMBOL(mlx5_core_create_mkey);
70 int mlx5_core_destroy_mkey(struct mlx5_core_dev *dev, struct mlx5_core_mr *mr)
72 struct mlx5_destroy_mkey_mbox_in in;
73 struct mlx5_destroy_mkey_mbox_out out;
76 memset(&in, 0, sizeof(in));
77 memset(&out, 0, sizeof(out));
79 in.hdr.opcode = cpu_to_be16(MLX5_CMD_OP_DESTROY_MKEY);
80 in.mkey = cpu_to_be32(mlx5_mkey_to_idx(mr->key));
81 err = mlx5_cmd_exec(dev, &in, sizeof(in), &out, sizeof(out));
86 return mlx5_cmd_status_to_err(&out.hdr);
90 EXPORT_SYMBOL(mlx5_core_destroy_mkey);
92 int mlx5_core_query_mkey(struct mlx5_core_dev *dev, struct mlx5_core_mr *mr,
93 struct mlx5_query_mkey_mbox_out *out, int outlen)
95 struct mlx5_destroy_mkey_mbox_in in;
98 memset(&in, 0, sizeof(in));
99 memset(out, 0, outlen);
101 in.hdr.opcode = cpu_to_be16(MLX5_CMD_OP_QUERY_MKEY);
102 in.mkey = cpu_to_be32(mlx5_mkey_to_idx(mr->key));
103 err = mlx5_cmd_exec(dev, &in, sizeof(in), out, outlen);
108 return mlx5_cmd_status_to_err(&out->hdr);
112 EXPORT_SYMBOL(mlx5_core_query_mkey);
114 int mlx5_core_dump_fill_mkey(struct mlx5_core_dev *dev, struct mlx5_core_mr *mr,
117 struct mlx5_query_special_ctxs_mbox_in in;
118 struct mlx5_query_special_ctxs_mbox_out out;
121 memset(&in, 0, sizeof(in));
122 memset(&out, 0, sizeof(out));
124 in.hdr.opcode = cpu_to_be16(MLX5_CMD_OP_QUERY_SPECIAL_CONTEXTS);
125 err = mlx5_cmd_exec(dev, &in, sizeof(in), &out, sizeof(out));
130 return mlx5_cmd_status_to_err(&out.hdr);
132 *mkey = be32_to_cpu(out.dump_fill_mkey);
136 EXPORT_SYMBOL(mlx5_core_dump_fill_mkey);