loongarch/crypto/crc32-loongarch.c

1 // SPDX-License-Identifier: GPL-2.0
3  * crc32.c - CRC32 and CRC32C using LoongArch crc* instructions
5  * Module based on mips/crypto/crc32-mips.c
9  * Copyright (C) 2020-2023 Loongson Technology Corporation Limited
15 #include <asm/cpu-features.h>
21 		#type ".w." #size ".w" " %0, %1, %0\n\t"\
39 		len -= sizeof(u64);  in crc32_loongarch_hw()
59 		CRC32(crc, value, b);  in crc32_loongarch_hw()
74 		len -= sizeof(u64);  in crc32c_loongarch_hw()
94 		CRC32C(crc, value, b);  in crc32c_loongarch_hw()
100 #define CHKSUM_BLOCK_SIZE	1
113 	struct chksum_ctx *mctx = crypto_shash_ctx(desc->tfm);  in chksum_init()
116 	ctx->crc = mctx->key;  in chksum_init()
129 	if (keylen != sizeof(mctx->key))  in chksum_setkey()
130 		return -EINVAL;  in chksum_setkey()
132 	mctx->key = get_unaligned_le32(key);  in chksum_setkey()
141 	ctx->crc = crc32_loongarch_hw(ctx->crc, data, length);  in chksum_update()
149 	ctx->crc = crc32c_loongarch_hw(ctx->crc, data, length);  in chksumc_update()
157 	put_unaligned_le32(ctx->crc, out);  in chksum_final()
165 	put_unaligned_le32(~ctx->crc, out);  in chksumc_final()
185 	return __chksum_finup(ctx->crc, data, len, out);  in chksum_finup()
192 	return __chksumc_finup(ctx->crc, data, len, out);  in chksumc_finup()
197 	struct chksum_ctx *mctx = crypto_shash_ctx(desc->tfm);  in chksum_digest()
199 	return __chksum_finup(mctx->key, data, length, out);  in chksum_digest()
204 	struct chksum_ctx *mctx = crypto_shash_ctx(desc->tfm);  in chksumc_digest()
206 	return __chksumc_finup(mctx->key, data, length, out);  in chksumc_digest()
213 	mctx->key = 0;  in chksum_cra_init()
221 	mctx->key = ~0;  in chksumc_cra_init()
236 		.cra_driver_name	=	"crc32-loongarch",
257 		.cra_driver_name	=	"crc32c-loongarch",
297 MODULE_AUTHOR("Min Zhou <zhoumin@loongson.cn>");
298 MODULE_AUTHOR("Huacai Chen <chenhuacai@loongson.cn>");