xref: /linux/drivers/net/ethernet/mellanox/mlx5/core/pd.c (revision 4f2c0a4acffbec01079c28f839422e64ddeff004)
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_alloc_pd(struct mlx5_core_dev * dev,u32 * pdn)37 int mlx5_core_alloc_pd(struct mlx5_core_dev *dev, u32 *pdn)
38 {
39 	u32 out[MLX5_ST_SZ_DW(alloc_pd_out)] = {};
40 	u32 in[MLX5_ST_SZ_DW(alloc_pd_in)] = {};
41 	int err;
42 
43 	MLX5_SET(alloc_pd_in, in, opcode, MLX5_CMD_OP_ALLOC_PD);
44 	err = mlx5_cmd_exec_inout(dev, alloc_pd, in, out);
45 	if (!err)
46 		*pdn = MLX5_GET(alloc_pd_out, out, pd);
47 	return err;
48 }
49 EXPORT_SYMBOL(mlx5_core_alloc_pd);
50 
mlx5_core_dealloc_pd(struct mlx5_core_dev * dev,u32 pdn)51 int mlx5_core_dealloc_pd(struct mlx5_core_dev *dev, u32 pdn)
52 {
53 	u32 in[MLX5_ST_SZ_DW(dealloc_pd_in)] = {};
54 
55 	MLX5_SET(dealloc_pd_in, in, opcode, MLX5_CMD_OP_DEALLOC_PD);
56 	MLX5_SET(dealloc_pd_in, in, pd, pdn);
57 	return mlx5_cmd_exec_in(dev, dealloc_pd, in);
58 }
59 EXPORT_SYMBOL(mlx5_core_dealloc_pd);
60