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b5943815e6
Move the riscv-optimized CRC code from arch/riscv/lib/crc* into its new location in lib/crc/riscv/, and wire it up in the new way. This new way of organizing the CRC code eliminates the need to artificially split the code for each CRC variant into separate arch and generic modules, enabling better inlining and dead code elimination. For more details, see "lib/crc: Prepare for arch-optimized code in subdirs of lib/crc/". Reviewed-by: "Martin K. Petersen" <martin.petersen@oracle.com> Acked-by: Ingo Molnar <mingo@kernel.org> Acked-by: "Jason A. Donenfeld" <Jason@zx2c4.com> Link: https://lore.kernel.org/r/20250607200454.73587-9-ebiggers@kernel.org Signed-off-by: Eric Biggers <ebiggers@kernel.org>
27 lines
708 B
C
27 lines
708 B
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* RISC-V optimized CRC64 functions
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*
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* Copyright 2025 Google LLC
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*/
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#include <asm/hwcap.h>
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#include <asm/alternative-macros.h>
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#include "crc-clmul.h"
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static inline u64 crc64_be_arch(u64 crc, const u8 *p, size_t len)
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{
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if (riscv_has_extension_likely(RISCV_ISA_EXT_ZBC))
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return crc64_msb_clmul(crc, p, len,
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&crc64_msb_0x42f0e1eba9ea3693_consts);
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return crc64_be_generic(crc, p, len);
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}
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static inline u64 crc64_nvme_arch(u64 crc, const u8 *p, size_t len)
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{
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if (riscv_has_extension_likely(RISCV_ISA_EXT_ZBC))
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return crc64_lsb_clmul(crc, p, len,
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&crc64_lsb_0x9a6c9329ac4bc9b5_consts);
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return crc64_nvme_generic(crc, p, len);
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}
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