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
mlx5_core_mad_ifc(struct mlx5_core_dev * dev,const void * inb,void * outb,u16 opmod,u8 port)34 int 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
65 out:
66 kfree(out);
67 kfree(in);
68 return err;
69 }
70 EXPORT_SYMBOL_GPL(mlx5_core_mad_ifc);
71