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// SPDX-License-Identifier: GPL-2.0-or-later
/*
* RISC-V optimized CRC64 functions
*
* Copyright 2025 Google LLC
*/
#include <asm/hwcap.h>
#include <asm/alternative-macros.h>
#include <linux/crc64.h>
#include <linux/module.h>
#include "crc-clmul.h"
u64 crc64_be_arch(u64 crc, const u8 *p, size_t len)
{
if (riscv_has_extension_likely(RISCV_ISA_EXT_ZBC))
return crc64_msb_clmul(crc, p, len,
&crc64_msb_0x42f0e1eba9ea3693_consts);
return crc64_be_generic(crc, p, len);
}
EXPORT_SYMBOL(crc64_be_arch);
u64 crc64_nvme_arch(u64 crc, const u8 *p, size_t len)
{
if (riscv_has_extension_likely(RISCV_ISA_EXT_ZBC))
return crc64_lsb_clmul(crc, p, len,
&crc64_lsb_0x9a6c9329ac4bc9b5_consts);
return crc64_nvme_generic(crc, p, len);
}
EXPORT_SYMBOL(crc64_nvme_arch);
MODULE_DESCRIPTION("RISC-V optimized CRC64 functions");
MODULE_LICENSE("GPL");
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