1 /*
2 * Copyright (c) 2013-2015, Mellanox Technologies. All rights reserved.
3 *
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:
9 *
10 * Redistribution and use in source and binary forms, with or
11 * without modification, are permitted provided that the following
12 * conditions are met:
13 *
14 * - Redistributions of source code must retain the above
15 * copyright notice, this list of conditions and the following
16 * disclaimer.
17 *
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.
22 *
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
30 * SOFTWARE.
31 */
32
33 #include <linux/kernel.h>
34 #include <linux/mlx5/driver.h>
35 #include <linux/mlx5/qp.h>
36 #include "mlx5_core.h"
37
mlx5_core_create_mkey(struct mlx5_core_dev * dev,u32 * mkey,u32 * in,int inlen)38 int mlx5_core_create_mkey(struct mlx5_core_dev *dev, u32 *mkey, u32 *in,
39 int inlen)
40 {
41 u32 lout[MLX5_ST_SZ_DW(create_mkey_out)] = {};
42 u32 mkey_index;
43 int err;
44
45 MLX5_SET(create_mkey_in, in, opcode, MLX5_CMD_OP_CREATE_MKEY);
46
47 err = mlx5_cmd_exec(dev, in, inlen, lout, sizeof(lout));
48 if (err)
49 return err;
50
51 mkey_index = MLX5_GET(create_mkey_out, lout, mkey_index);
52 *mkey = MLX5_GET(create_mkey_in, in, memory_key_mkey_entry.mkey_7_0) |
53 mlx5_idx_to_mkey(mkey_index);
54
55 mlx5_core_dbg(dev, "out 0x%x, mkey 0x%x\n", mkey_index, *mkey);
56 return 0;
57 }
58 EXPORT_SYMBOL(mlx5_core_create_mkey);
59
mlx5_core_destroy_mkey(struct mlx5_core_dev * dev,u32 mkey)60 int mlx5_core_destroy_mkey(struct mlx5_core_dev *dev, u32 mkey)
61 {
62 u32 in[MLX5_ST_SZ_DW(destroy_mkey_in)] = {};
63
64 MLX5_SET(destroy_mkey_in, in, opcode, MLX5_CMD_OP_DESTROY_MKEY);
65 MLX5_SET(destroy_mkey_in, in, mkey_index, mlx5_mkey_to_idx(mkey));
66 return mlx5_cmd_exec_in(dev, destroy_mkey, in);
67 }
68 EXPORT_SYMBOL(mlx5_core_destroy_mkey);
69
mlx5_core_query_mkey(struct mlx5_core_dev * dev,u32 mkey,u32 * out,int outlen)70 int mlx5_core_query_mkey(struct mlx5_core_dev *dev, u32 mkey, u32 *out,
71 int outlen)
72 {
73 u32 in[MLX5_ST_SZ_DW(query_mkey_in)] = {};
74
75 memset(out, 0, outlen);
76 MLX5_SET(query_mkey_in, in, opcode, MLX5_CMD_OP_QUERY_MKEY);
77 MLX5_SET(query_mkey_in, in, mkey_index, mlx5_mkey_to_idx(mkey));
78 return mlx5_cmd_exec(dev, in, sizeof(in), out, outlen);
79 }
80 EXPORT_SYMBOL(mlx5_core_query_mkey);
81
mlx5_get_psv(u32 * out,int psv_index)82 static inline u32 mlx5_get_psv(u32 *out, int psv_index)
83 {
84 switch (psv_index) {
85 case 1: return MLX5_GET(create_psv_out, out, psv1_index);
86 case 2: return MLX5_GET(create_psv_out, out, psv2_index);
87 case 3: return MLX5_GET(create_psv_out, out, psv3_index);
88 default: return MLX5_GET(create_psv_out, out, psv0_index);
89 }
90 }
91
mlx5_core_create_psv(struct mlx5_core_dev * dev,u32 pdn,int npsvs,u32 * sig_index)92 int mlx5_core_create_psv(struct mlx5_core_dev *dev, u32 pdn,
93 int npsvs, u32 *sig_index)
94 {
95 u32 out[MLX5_ST_SZ_DW(create_psv_out)] = {};
96 u32 in[MLX5_ST_SZ_DW(create_psv_in)] = {};
97 int i, err;
98
99 if (npsvs > MLX5_MAX_PSVS)
100 return -EINVAL;
101
102 MLX5_SET(create_psv_in, in, opcode, MLX5_CMD_OP_CREATE_PSV);
103 MLX5_SET(create_psv_in, in, pd, pdn);
104 MLX5_SET(create_psv_in, in, num_psv, npsvs);
105
106 err = mlx5_cmd_exec_inout(dev, create_psv, in, out);
107 if (err)
108 return err;
109
110 for (i = 0; i < npsvs; i++)
111 sig_index[i] = mlx5_get_psv(out, i);
112
113 return err;
114 }
115 EXPORT_SYMBOL(mlx5_core_create_psv);
116
mlx5_core_destroy_psv(struct mlx5_core_dev * dev,int psv_num)117 int mlx5_core_destroy_psv(struct mlx5_core_dev *dev, int psv_num)
118 {
119 u32 in[MLX5_ST_SZ_DW(destroy_psv_in)] = {};
120
121 MLX5_SET(destroy_psv_in, in, opcode, MLX5_CMD_OP_DESTROY_PSV);
122 MLX5_SET(destroy_psv_in, in, psvn, psv_num);
123 return mlx5_cmd_exec_in(dev, destroy_psv, in);
124 }
125 EXPORT_SYMBOL(mlx5_core_destroy_psv);
126
mlx5_core_get_terminate_scatter_list_mkey(struct mlx5_core_dev * dev)127 __be32 mlx5_core_get_terminate_scatter_list_mkey(struct mlx5_core_dev *dev)
128 {
129 u32 out[MLX5_ST_SZ_DW(query_special_contexts_out)] = {};
130 u32 in[MLX5_ST_SZ_DW(query_special_contexts_in)] = {};
131 u32 mkey;
132
133 if (!MLX5_CAP_GEN(dev, terminate_scatter_list_mkey))
134 return MLX5_TERMINATE_SCATTER_LIST_LKEY;
135
136 MLX5_SET(query_special_contexts_in, in, opcode,
137 MLX5_CMD_OP_QUERY_SPECIAL_CONTEXTS);
138 if (mlx5_cmd_exec_inout(dev, query_special_contexts, in, out))
139 return MLX5_TERMINATE_SCATTER_LIST_LKEY;
140
141 mkey = MLX5_GET(query_special_contexts_out, out,
142 terminate_scatter_list_mkey);
143 return cpu_to_be32(mkey);
144 }
145 EXPORT_SYMBOL(mlx5_core_get_terminate_scatter_list_mkey);
146