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/module.h>
35 #include <linux/mlx5/driver.h>
36 #include "mlx5_core.h"
37
mlx5_core_create_mkey(struct mlx5_core_dev * dev,struct mlx5_core_mkey * mkey,u32 * in,int inlen)38 int mlx5_core_create_mkey(struct mlx5_core_dev *dev,
39 struct mlx5_core_mkey *mkey,
40 u32 *in, int inlen)
41 {
42 u32 lout[MLX5_ST_SZ_DW(create_mkey_out)] = {};
43 u32 mkey_index;
44 void *mkc;
45 int err;
46
47 MLX5_SET(create_mkey_in, in, opcode, MLX5_CMD_OP_CREATE_MKEY);
48
49 err = mlx5_cmd_exec(dev, in, inlen, lout, sizeof(lout));
50 if (err)
51 return err;
52
53 mkc = MLX5_ADDR_OF(create_mkey_in, in, memory_key_mkey_entry);
54 mkey_index = MLX5_GET(create_mkey_out, lout, mkey_index);
55 mkey->iova = MLX5_GET64(mkc, mkc, start_addr);
56 mkey->size = MLX5_GET64(mkc, mkc, len);
57 mkey->key |= mlx5_idx_to_mkey(mkey_index);
58 mkey->pd = MLX5_GET(mkc, mkc, pd);
59 init_waitqueue_head(&mkey->wait);
60
61 mlx5_core_dbg(dev, "out 0x%x, mkey 0x%x\n", mkey_index, mkey->key);
62 return 0;
63 }
64 EXPORT_SYMBOL(mlx5_core_create_mkey);
65
mlx5_core_destroy_mkey(struct mlx5_core_dev * dev,struct mlx5_core_mkey * mkey)66 int mlx5_core_destroy_mkey(struct mlx5_core_dev *dev,
67 struct mlx5_core_mkey *mkey)
68 {
69 u32 in[MLX5_ST_SZ_DW(destroy_mkey_in)] = {};
70
71 MLX5_SET(destroy_mkey_in, in, opcode, MLX5_CMD_OP_DESTROY_MKEY);
72 MLX5_SET(destroy_mkey_in, in, mkey_index, mlx5_mkey_to_idx(mkey->key));
73 return mlx5_cmd_exec_in(dev, destroy_mkey, in);
74 }
75 EXPORT_SYMBOL(mlx5_core_destroy_mkey);
76
mlx5_core_query_mkey(struct mlx5_core_dev * dev,struct mlx5_core_mkey * mkey,u32 * out,int outlen)77 int mlx5_core_query_mkey(struct mlx5_core_dev *dev, struct mlx5_core_mkey *mkey,
78 u32 *out, int outlen)
79 {
80 u32 in[MLX5_ST_SZ_DW(query_mkey_in)] = {};
81
82 memset(out, 0, outlen);
83 MLX5_SET(query_mkey_in, in, opcode, MLX5_CMD_OP_QUERY_MKEY);
84 MLX5_SET(query_mkey_in, in, mkey_index, mlx5_mkey_to_idx(mkey->key));
85 return mlx5_cmd_exec(dev, in, sizeof(in), out, outlen);
86 }
87 EXPORT_SYMBOL(mlx5_core_query_mkey);
88
mlx5_get_psv(u32 * out,int psv_index)89 static inline u32 mlx5_get_psv(u32 *out, int psv_index)
90 {
91 switch (psv_index) {
92 case 1: return MLX5_GET(create_psv_out, out, psv1_index);
93 case 2: return MLX5_GET(create_psv_out, out, psv2_index);
94 case 3: return MLX5_GET(create_psv_out, out, psv3_index);
95 default: return MLX5_GET(create_psv_out, out, psv0_index);
96 }
97 }
98
mlx5_core_create_psv(struct mlx5_core_dev * dev,u32 pdn,int npsvs,u32 * sig_index)99 int mlx5_core_create_psv(struct mlx5_core_dev *dev, u32 pdn,
100 int npsvs, u32 *sig_index)
101 {
102 u32 out[MLX5_ST_SZ_DW(create_psv_out)] = {};
103 u32 in[MLX5_ST_SZ_DW(create_psv_in)] = {};
104 int i, err;
105
106 if (npsvs > MLX5_MAX_PSVS)
107 return -EINVAL;
108
109 MLX5_SET(create_psv_in, in, opcode, MLX5_CMD_OP_CREATE_PSV);
110 MLX5_SET(create_psv_in, in, pd, pdn);
111 MLX5_SET(create_psv_in, in, num_psv, npsvs);
112
113 err = mlx5_cmd_exec_inout(dev, create_psv, in, out);
114 if (err)
115 return err;
116
117 for (i = 0; i < npsvs; i++)
118 sig_index[i] = mlx5_get_psv(out, i);
119
120 return err;
121 }
122 EXPORT_SYMBOL(mlx5_core_create_psv);
123
mlx5_core_destroy_psv(struct mlx5_core_dev * dev,int psv_num)124 int mlx5_core_destroy_psv(struct mlx5_core_dev *dev, int psv_num)
125 {
126 u32 in[MLX5_ST_SZ_DW(destroy_psv_in)] = {};
127
128 MLX5_SET(destroy_psv_in, in, opcode, MLX5_CMD_OP_DESTROY_PSV);
129 MLX5_SET(destroy_psv_in, in, psvn, psv_num);
130 return mlx5_cmd_exec_in(dev, destroy_psv, in);
131 }
132 EXPORT_SYMBOL(mlx5_core_destroy_psv);
133