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sys/dev/axgbe/xgbe_osdep.c
- This file was added.
| /*- | |||||
| * SPDX-License-Identifier: BSD-2-Clause-FreeBSD | |||||
| * | |||||
| * Copyright (c) 2020 Advanced Micro Devices, Inc. | |||||
| * | |||||
| * Redistribution and use in source and binary forms, with or without | |||||
| * modification, are permitted provided that the following conditions | |||||
| * are met: | |||||
| * 1. Redistributions of source code must retain the above copyright | |||||
| * notice, this list of conditions and the following disclaimer. | |||||
| * 2. Redistributions in binary form must reproduce the above copyright | |||||
| * notice, this list of conditions and the following disclaimer in the | |||||
| * documentation and/or other materials provided with the distribution. | |||||
| * | |||||
| * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND | |||||
| * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |||||
| * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |||||
| * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE | |||||
| * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |||||
| * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |||||
| * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |||||
| * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |||||
| * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |||||
| * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |||||
| * SUCH DAMAGE. | |||||
| * | |||||
| * Contact Information : | |||||
| * Rajesh Kumar <rajesh1.kumar@amd.com> | |||||
| * | |||||
| */ | |||||
| #include <sys/cdefs.h> | |||||
| __FBSDID("$FreeBSD$"); | |||||
| #include "xgbe.h" | |||||
| #include "xgbe_osdep.h" | |||||
| /* Bit Reversal - http://aggregate.org/MAGIC/#Bit%20Reversal */ | |||||
| uint32_t bitrev32(uint32_t x) | |||||
| { | |||||
| x = (((x & 0xaaaaaaaa) >> 1) | ((x & 0x55555555) << 1)); | |||||
| x = (((x & 0xcccccccc) >> 2) | ((x & 0x33333333) << 2)); | |||||
| x = (((x & 0xf0f0f0f0) >> 4) | ((x & 0x0f0f0f0f) << 4)); | |||||
| x = (((x & 0xff00ff00) >> 8) | ((x & 0x00ff00ff) << 8)); | |||||
| return ((x >> 16) | (x << 16)); | |||||
| } | |||||