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