1/*-
2 * Copyright (c) 2013-2017, 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
26#include "opt_rss.h"
27#include "opt_ratelimit.h"
28
29#include <linux/kernel.h>
30#include <linux/module.h>
31#include <dev/mlx5/driver.h>
32#include <dev/mlx5/mlx5_core/mlx5_core.h>
33
34int mlx5_core_mad_ifc(struct mlx5_core_dev *dev, const void *inb, void *outb,
35		      u16 opmod, u8 port)
36{
37	int outlen = MLX5_ST_SZ_BYTES(mad_ifc_out);
38	int inlen = MLX5_ST_SZ_BYTES(mad_ifc_in);
39	int err = -ENOMEM;
40	void *data;
41	void *resp;
42	u32 *out;
43	u32 *in;
44
45	in = kzalloc(inlen, GFP_KERNEL);
46	out = kzalloc(outlen, GFP_KERNEL);
47	if (!in || !out)
48		goto out;
49
50	MLX5_SET(mad_ifc_in, in, opcode, MLX5_CMD_OP_MAD_IFC);
51	MLX5_SET(mad_ifc_in, in, op_mod, opmod);
52	MLX5_SET(mad_ifc_in, in, port, port);
53
54	data = MLX5_ADDR_OF(mad_ifc_in, in, mad);
55	memcpy(data, inb, MLX5_FLD_SZ_BYTES(mad_ifc_in, mad));
56
57	err = mlx5_cmd_exec(dev, in, inlen, out, outlen);
58	if (err)
59		goto out;
60
61	resp = MLX5_ADDR_OF(mad_ifc_out, out, response_mad_packet);
62	memcpy(outb, resp,
63	       MLX5_FLD_SZ_BYTES(mad_ifc_out, response_mad_packet));
64
65out:
66	kfree(out);
67	kfree(in);
68	return err;
69}
70EXPORT_SYMBOL_GPL(mlx5_core_mad_ifc);
71