1 // SPDX-License-Identifier: GPL-2.0-or-later 2 /* 3 * RISC-V optimized CRC64 functions 4 * 5 * Copyright 2025 Google LLC 6 */ 7 8 #include <asm/hwcap.h> 9 #include <asm/alternative-macros.h> 10 11 #include "crc-clmul.h" 12 13 static inline u64 crc64_be_arch(u64 crc, const u8 *p, size_t len) 14 { 15 if (riscv_has_extension_likely(RISCV_ISA_EXT_ZBC)) 16 return crc64_msb_clmul(crc, p, len, 17 &crc64_msb_0x42f0e1eba9ea3693_consts); 18 return crc64_be_generic(crc, p, len); 19 } 20 21 static inline u64 crc64_nvme_arch(u64 crc, const u8 *p, size_t len) 22 { 23 if (riscv_has_extension_likely(RISCV_ISA_EXT_ZBC)) 24 return crc64_lsb_clmul(crc, p, len, 25 &crc64_lsb_0x9a6c9329ac4bc9b5_consts); 26 return crc64_nvme_generic(crc, p, len); 27 } 28