e3910413b2
Implement spdk_crc32c_update() with ARM CRC32 intrinsics. Change-Id: I1daf7f21012aab02290f88a65bbae619eedf5087 Signed-off-by: Richael Zhuang <richael.zhuang@arm.com> Reviewed-on: https://review.gerrithub.io/c/437218 Reviewed-by: Ziye Yang <optimistyzy@gmail.com> Reviewed-by: Ben Walker <benjamin.walker@intel.com> Reviewed-by: Jim Harris <james.r.harris@intel.com> Chandler-Test-Pool: SPDK Automated Test System <sys_sgsw@intel.com> Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
120 lines
3.5 KiB
C
120 lines
3.5 KiB
C
/*-
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* BSD LICENSE
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*
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* Copyright (c) Intel Corporation.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* * Neither the name of Intel Corporation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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/**
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* \file
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* CRC-32 utility functions
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*/
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#ifndef SPDK_CRC32_H
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#define SPDK_CRC32_H
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#include "spdk/stdinc.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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#if defined(__aarch64__) || defined(__AARCH64__)
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#ifdef __ARM_FEATURE_CRC32
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#define SPDK_HAVE_ARM_CRC
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#include <arm_acle.h>
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#endif
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#endif
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#if defined(__x86_64__) && defined(__SSE4_2__)
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#define SPDK_HAVE_SSE4_2
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#include <x86intrin.h>
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#endif
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/**
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* IEEE CRC-32 polynomial (bit reflected)
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*/
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#define SPDK_CRC32_POLYNOMIAL_REFLECT 0xedb88320UL
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/**
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* CRC-32C (Castagnoli) polynomial (bit reflected)
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*/
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#define SPDK_CRC32C_POLYNOMIAL_REFLECT 0x82f63b78UL
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struct spdk_crc32_table {
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uint32_t table[256];
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};
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/**
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* Initialize a CRC32 lookup table for a given polynomial.
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*
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* \param table Table to fill with precalculated CRC-32 data.
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* \param polynomial_reflect Bit-reflected CRC-32 polynomial.
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*/
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void spdk_crc32_table_init(struct spdk_crc32_table *table,
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uint32_t polynomial_reflect);
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/**
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* Calculate a partial CRC-32 checksum.
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*
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* \param table CRC-32 table initialized with spdk_crc32_table_init().
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* \param buf Data buffer to checksum.
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* \param len Length of buf in bytes.
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* \param crc Previous CRC-32 value.
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* \return Updated CRC-32 value.
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*/
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uint32_t spdk_crc32_update(const struct spdk_crc32_table *table,
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const void *buf, size_t len,
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uint32_t crc);
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/**
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* Calculate a partial CRC-32 IEEE checksum.
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*
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* \param buf Data buffer to checksum.
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* \param len Length of buf in bytes.
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* \param crc Previous CRC-32 value.
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* \return Updated CRC-32 value.
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*/
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uint32_t spdk_crc32_ieee_update(const void *buf, size_t len, uint32_t crc);
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/**
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* Calculate a partial CRC-32C checksum.
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*
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* \param buf Data buffer to checksum.
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* \param len Length of buf in bytes.
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* \param crc Previous CRC-32C value.
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* \return Updated CRC-32C value.
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*/
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uint32_t spdk_crc32c_update(const void *buf, size_t len, uint32_t crc);
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#ifdef __cplusplus
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}
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#endif
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#endif /* SPDK_CRC32_H */
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