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/* SPDX-License-Identifier: GPL-2.0-only */
/*
* CRC64 using ARM64 PMULL instructions
*/
#include <linux/cpufeature.h>
#include <asm/simd.h>
#include <linux/minmax.h>
#include <linux/sizes.h>
u64 crc64_nvme_arm64_c(u64 crc, const u8 *p, size_t len);
#define crc64_be_arch crc64_be_generic
static inline u64 crc64_nvme_arch(u64 crc, const u8 *p, size_t len)
{
if (len >= 128 && cpu_have_named_feature(PMULL) &&
likely(may_use_simd())) {
size_t chunk = len & ~15;
scoped_ksimd()
crc = crc64_nvme_arm64_c(crc, p, chunk);
p += chunk;
len &= 15;
}
return crc64_nvme_generic(crc, p, len);
}
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