mlx5_mad.c revision 302408 
1/*-
2 * Copyright (c) 2013-2015, Mellanox Technologies, Ltd.  All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 *    notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 *    notice, this list of conditions and the following disclaimer in the
11 *    documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS `AS IS' AND
14 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
16 * ARE DISCLAIMED.  IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE
17 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
18 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
19 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
20 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
21 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
22 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
23 * SUCH DAMAGE.
24 *
25 * $FreeBSD: stable/11/sys/dev/mlx5/mlx5_core/mlx5_mad.c 290650 2015-11-10 12:20:22Z hselasky $
26 */
27
28#include <linux/kernel.h>
29#include <linux/module.h>
30#include <dev/mlx5/driver.h>
31#include "mlx5_core.h"
32
33int mlx5_core_mad_ifc(struct mlx5_core_dev *dev, void *inb, void *outb,
34		      u16 opmod, u8 port)
35{
36	struct mlx5_mad_ifc_mbox_in *in = NULL;
37	struct mlx5_mad_ifc_mbox_out *out = NULL;
38	int err;
39
40	in = kzalloc(sizeof(*in), GFP_KERNEL);
41
42	out = kzalloc(sizeof(*out), GFP_KERNEL);
43
44	in->hdr.opcode = cpu_to_be16(MLX5_CMD_OP_MAD_IFC);
45	in->hdr.opmod = cpu_to_be16(opmod);
46	in->port = port;
47
48	memcpy(in->data, inb, sizeof(in->data));
49
50	err = mlx5_cmd_exec(dev, in, sizeof(*in), out, sizeof(*out));
51	if (err)
52		goto out;
53
54	if (out->hdr.status) {
55		err = mlx5_cmd_status_to_err(&out->hdr);
56		goto out;
57	}
58
59	memcpy(outb, out->data, sizeof(out->data));
60
61out:
62	kfree(out);
63	kfree(in);
64	return err;
65}
66EXPORT_SYMBOL_GPL(mlx5_core_mad_ifc);
67