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 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