diff options
Diffstat (limited to 'arch/arm64/crypto/sha1-ce-glue.c')
-rw-r--r-- | arch/arm64/crypto/sha1-ce-glue.c | 118 |
1 files changed, 0 insertions, 118 deletions
diff --git a/arch/arm64/crypto/sha1-ce-glue.c b/arch/arm64/crypto/sha1-ce-glue.c deleted file mode 100644 index 65b6980817e5..000000000000 --- a/arch/arm64/crypto/sha1-ce-glue.c +++ /dev/null @@ -1,118 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0-only -/* - * sha1-ce-glue.c - SHA-1 secure hash using ARMv8 Crypto Extensions - * - * Copyright (C) 2014 - 2017 Linaro Ltd <ard.biesheuvel@linaro.org> - */ - -#include <asm/neon.h> -#include <asm/simd.h> -#include <crypto/internal/hash.h> -#include <crypto/internal/simd.h> -#include <crypto/sha1.h> -#include <crypto/sha1_base.h> -#include <linux/cpufeature.h> -#include <linux/kernel.h> -#include <linux/module.h> -#include <linux/string.h> - -MODULE_DESCRIPTION("SHA1 secure hash using ARMv8 Crypto Extensions"); -MODULE_AUTHOR("Ard Biesheuvel <ard.biesheuvel@linaro.org>"); -MODULE_LICENSE("GPL v2"); -MODULE_ALIAS_CRYPTO("sha1"); - -struct sha1_ce_state { - struct sha1_state sst; - u32 finalize; -}; - -extern const u32 sha1_ce_offsetof_count; -extern const u32 sha1_ce_offsetof_finalize; - -asmlinkage int __sha1_ce_transform(struct sha1_ce_state *sst, u8 const *src, - int blocks); - -static void sha1_ce_transform(struct sha1_state *sst, u8 const *src, - int blocks) -{ - while (blocks) { - int rem; - - kernel_neon_begin(); - rem = __sha1_ce_transform(container_of(sst, - struct sha1_ce_state, - sst), src, blocks); - kernel_neon_end(); - src += (blocks - rem) * SHA1_BLOCK_SIZE; - blocks = rem; - } -} - -const u32 sha1_ce_offsetof_count = offsetof(struct sha1_ce_state, sst.count); -const u32 sha1_ce_offsetof_finalize = offsetof(struct sha1_ce_state, finalize); - -static int sha1_ce_update(struct shash_desc *desc, const u8 *data, - unsigned int len) -{ - struct sha1_ce_state *sctx = shash_desc_ctx(desc); - - sctx->finalize = 0; - return sha1_base_do_update_blocks(desc, data, len, sha1_ce_transform); -} - -static int sha1_ce_finup(struct shash_desc *desc, const u8 *data, - unsigned int len, u8 *out) -{ - struct sha1_ce_state *sctx = shash_desc_ctx(desc); - bool finalized = false; - - /* - * Allow the asm code to perform the finalization if there is no - * partial data and the input is a round multiple of the block size. - */ - if (len >= SHA1_BLOCK_SIZE) { - unsigned int remain = len - round_down(len, SHA1_BLOCK_SIZE); - - finalized = !remain; - sctx->finalize = finalized; - sha1_base_do_update_blocks(desc, data, len, sha1_ce_transform); - data += len - remain; - len = remain; - } - if (!finalized) { - sctx->finalize = 0; - sha1_base_do_finup(desc, data, len, sha1_ce_transform); - } - return sha1_base_finish(desc, out); -} - -static struct shash_alg alg = { - .init = sha1_base_init, - .update = sha1_ce_update, - .finup = sha1_ce_finup, - .descsize = sizeof(struct sha1_ce_state), - .statesize = SHA1_STATE_SIZE, - .digestsize = SHA1_DIGEST_SIZE, - .base = { - .cra_name = "sha1", - .cra_driver_name = "sha1-ce", - .cra_priority = 200, - .cra_flags = CRYPTO_AHASH_ALG_BLOCK_ONLY | - CRYPTO_AHASH_ALG_FINUP_MAX, - .cra_blocksize = SHA1_BLOCK_SIZE, - .cra_module = THIS_MODULE, - } -}; - -static int __init sha1_ce_mod_init(void) -{ - return crypto_register_shash(&alg); -} - -static void __exit sha1_ce_mod_fini(void) -{ - crypto_unregister_shash(&alg); -} - -module_cpu_feature_match(SHA1, sha1_ce_mod_init); -module_exit(sha1_ce_mod_fini); |