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 <linux/mlx5/cmd.h>
37#include "mlx5_core.h"
38
39struct mlx5_alloc_pd_mbox_in {
40	struct mlx5_inbox_hdr	hdr;
41	u8			rsvd[8];
42};
43
44struct mlx5_alloc_pd_mbox_out {
45	struct mlx5_outbox_hdr	hdr;
46	__be32			pdn;
47	u8			rsvd[4];
48};
49
50struct mlx5_dealloc_pd_mbox_in {
51	struct mlx5_inbox_hdr	hdr;
52	__be32			pdn;
53	u8			rsvd[4];
54};
55
56struct mlx5_dealloc_pd_mbox_out {
57	struct mlx5_outbox_hdr	hdr;
58	u8			rsvd[8];
59};
60
61int mlx5_core_alloc_pd(struct mlx5_core_dev *dev, u32 *pdn)
62{
63	struct mlx5_alloc_pd_mbox_in	in;
64	struct mlx5_alloc_pd_mbox_out	out;
65	int err;
66
67	memset(&in, 0, sizeof(in));
68	memset(&out, 0, sizeof(out));
69	in.hdr.opcode = cpu_to_be16(MLX5_CMD_OP_ALLOC_PD);
70	err = mlx5_cmd_exec(dev, &in, sizeof(in), &out, sizeof(out));
71	if (err)
72		return err;
73
74	if (out.hdr.status)
75		return mlx5_cmd_status_to_err(&out.hdr);
76
77	*pdn = be32_to_cpu(out.pdn) & 0xffffff;
78	return err;
79}
80EXPORT_SYMBOL(mlx5_core_alloc_pd);
81
82int mlx5_core_dealloc_pd(struct mlx5_core_dev *dev, u32 pdn)
83{
84	struct mlx5_dealloc_pd_mbox_in	in;
85	struct mlx5_dealloc_pd_mbox_out	out;
86	int err;
87
88	memset(&in, 0, sizeof(in));
89	memset(&out, 0, sizeof(out));
90	in.hdr.opcode = cpu_to_be16(MLX5_CMD_OP_DEALLOC_PD);
91	in.pdn = cpu_to_be32(pdn);
92	err = mlx5_cmd_exec(dev, &in, sizeof(in), &out, sizeof(out));
93	if (err)
94		return err;
95
96	if (out.hdr.status)
97		return mlx5_cmd_status_to_err(&out.hdr);
98
99	return err;
100}
101EXPORT_SYMBOL(mlx5_core_dealloc_pd);
102