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
39int mlx5_core_mad_ifc(struct mlx5_core_dev *dev, const void *inb, void *outb,
40		      u16 opmod, u8 port)
41{
42	struct mlx5_mad_ifc_mbox_in *in = NULL;
43	struct mlx5_mad_ifc_mbox_out *out = NULL;
44	int err;
45
46	in = kzalloc(sizeof(*in), GFP_KERNEL);
47	if (!in)
48		return -ENOMEM;
49
50	out = kzalloc(sizeof(*out), GFP_KERNEL);
51	if (!out) {
52		err = -ENOMEM;
53		goto out;
54	}
55
56	in->hdr.opcode = cpu_to_be16(MLX5_CMD_OP_MAD_IFC);
57	in->hdr.opmod = cpu_to_be16(opmod);
58	in->port = port;
59
60	memcpy(in->data, inb, sizeof(in->data));
61
62	err = mlx5_cmd_exec(dev, in, sizeof(*in), out, sizeof(*out));
63	if (err)
64		goto out;
65
66	if (out->hdr.status) {
67		err = mlx5_cmd_status_to_err(&out->hdr);
68		goto out;
69	}
70
71	memcpy(outb, out->data, sizeof(out->data));
72
73out:
74	kfree(out);
75	kfree(in);
76	return err;
77}
78EXPORT_SYMBOL_GPL(mlx5_core_mad_ifc);
79