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 "mlx5_core.h"
36 
mlx5_core_create_mkey(struct mlx5_core_dev * dev,u32 * mkey,u32 * in,int inlen)37 int mlx5_core_create_mkey(struct mlx5_core_dev *dev, u32 *mkey, u32 *in,
38 			  int inlen)
39 {
40 	u32 lout[MLX5_ST_SZ_DW(create_mkey_out)] = {};
41 	u32 mkey_index;
42 	int err;
43 
44 	MLX5_SET(create_mkey_in, in, opcode, MLX5_CMD_OP_CREATE_MKEY);
45 
46 	err = mlx5_cmd_exec(dev, in, inlen, lout, sizeof(lout));
47 	if (err)
48 		return err;
49 
50 	mkey_index = MLX5_GET(create_mkey_out, lout, mkey_index);
51 	*mkey = MLX5_GET(create_mkey_in, in, memory_key_mkey_entry.mkey_7_0) |
52 		mlx5_idx_to_mkey(mkey_index);
53 
54 	mlx5_core_dbg(dev, "out 0x%x, mkey 0x%x\n", mkey_index, *mkey);
55 	return 0;
56 }
57 EXPORT_SYMBOL(mlx5_core_create_mkey);
58 
mlx5_core_destroy_mkey(struct mlx5_core_dev * dev,u32 mkey)59 int mlx5_core_destroy_mkey(struct mlx5_core_dev *dev, u32 mkey)
60 {
61 	u32 in[MLX5_ST_SZ_DW(destroy_mkey_in)] = {};
62 
63 	MLX5_SET(destroy_mkey_in, in, opcode, MLX5_CMD_OP_DESTROY_MKEY);
64 	MLX5_SET(destroy_mkey_in, in, mkey_index, mlx5_mkey_to_idx(mkey));
65 	return mlx5_cmd_exec_in(dev, destroy_mkey, in);
66 }
67 EXPORT_SYMBOL(mlx5_core_destroy_mkey);
68 
mlx5_core_query_mkey(struct mlx5_core_dev * dev,u32 mkey,u32 * out,int outlen)69 int mlx5_core_query_mkey(struct mlx5_core_dev *dev, u32 mkey, u32 *out,
70 			 int outlen)
71 {
72 	u32 in[MLX5_ST_SZ_DW(query_mkey_in)] = {};
73 
74 	memset(out, 0, outlen);
75 	MLX5_SET(query_mkey_in, in, opcode, MLX5_CMD_OP_QUERY_MKEY);
76 	MLX5_SET(query_mkey_in, in, mkey_index, mlx5_mkey_to_idx(mkey));
77 	return mlx5_cmd_exec(dev, in, sizeof(in), out, outlen);
78 }
79 EXPORT_SYMBOL(mlx5_core_query_mkey);
80 
mlx5_get_psv(u32 * out,int psv_index)81 static inline u32 mlx5_get_psv(u32 *out, int psv_index)
82 {
83 	switch (psv_index) {
84 	case 1: return MLX5_GET(create_psv_out, out, psv1_index);
85 	case 2: return MLX5_GET(create_psv_out, out, psv2_index);
86 	case 3: return MLX5_GET(create_psv_out, out, psv3_index);
87 	default: return MLX5_GET(create_psv_out, out, psv0_index);
88 	}
89 }
90 
mlx5_core_create_psv(struct mlx5_core_dev * dev,u32 pdn,int npsvs,u32 * sig_index)91 int mlx5_core_create_psv(struct mlx5_core_dev *dev, u32 pdn,
92 			 int npsvs, u32 *sig_index)
93 {
94 	u32 out[MLX5_ST_SZ_DW(create_psv_out)] = {};
95 	u32 in[MLX5_ST_SZ_DW(create_psv_in)] = {};
96 	int i, err;
97 
98 	if (npsvs > MLX5_MAX_PSVS)
99 		return -EINVAL;
100 
101 	MLX5_SET(create_psv_in, in, opcode, MLX5_CMD_OP_CREATE_PSV);
102 	MLX5_SET(create_psv_in, in, pd, pdn);
103 	MLX5_SET(create_psv_in, in, num_psv, npsvs);
104 
105 	err = mlx5_cmd_exec_inout(dev, create_psv, in, out);
106 	if (err)
107 		return err;
108 
109 	for (i = 0; i < npsvs; i++)
110 		sig_index[i] = mlx5_get_psv(out, i);
111 
112 	return err;
113 }
114 EXPORT_SYMBOL(mlx5_core_create_psv);
115 
mlx5_core_destroy_psv(struct mlx5_core_dev * dev,int psv_num)116 int mlx5_core_destroy_psv(struct mlx5_core_dev *dev, int psv_num)
117 {
118 	u32 in[MLX5_ST_SZ_DW(destroy_psv_in)] = {};
119 
120 	MLX5_SET(destroy_psv_in, in, opcode, MLX5_CMD_OP_DESTROY_PSV);
121 	MLX5_SET(destroy_psv_in, in, psvn, psv_num);
122 	return mlx5_cmd_exec_in(dev, destroy_psv, in);
123 }
124 EXPORT_SYMBOL(mlx5_core_destroy_psv);
125