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 * $FreeBSD$ 26 */ 27 28 #include "opt_rss.h" 29 #include "opt_ratelimit.h" 30 31 #include <linux/kernel.h> 32 #include <linux/module.h> 33 #include <dev/mlx5/driver.h> 34 #include <dev/mlx5/mlx5_core/mlx5_core.h> 35 36 int mlx5_core_mad_ifc(struct mlx5_core_dev *dev, const void *inb, void *outb, 37 u16 opmod, u8 port) 38 { 39 int outlen = MLX5_ST_SZ_BYTES(mad_ifc_out); 40 int inlen = MLX5_ST_SZ_BYTES(mad_ifc_in); 41 int err = -ENOMEM; 42 void *data; 43 void *resp; 44 u32 *out; 45 u32 *in; 46 47 in = kzalloc(inlen, GFP_KERNEL); 48 out = kzalloc(outlen, GFP_KERNEL); 49 if (!in || !out) 50 goto out; 51 52 MLX5_SET(mad_ifc_in, in, opcode, MLX5_CMD_OP_MAD_IFC); 53 MLX5_SET(mad_ifc_in, in, op_mod, opmod); 54 MLX5_SET(mad_ifc_in, in, port, port); 55 56 data = MLX5_ADDR_OF(mad_ifc_in, in, mad); 57 memcpy(data, inb, MLX5_FLD_SZ_BYTES(mad_ifc_in, mad)); 58 59 err = mlx5_cmd_exec(dev, in, inlen, out, outlen); 60 if (err) 61 goto out; 62 63 resp = MLX5_ADDR_OF(mad_ifc_out, out, response_mad_packet); 64 memcpy(outb, resp, 65 MLX5_FLD_SZ_BYTES(mad_ifc_out, response_mad_packet)); 66 67 out: 68 kfree(out); 69 kfree(in); 70 return err; 71 } 72 EXPORT_SYMBOL_GPL(mlx5_core_mad_ifc); 73