| /* |
| * sha512-neon-glue.c - accelerated SHA-384/512 for ARM NEON |
| * |
| * Copyright (C) 2015 Linaro Ltd <ard.biesheuvel@linaro.org> |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License version 2 as |
| * published by the Free Software Foundation. |
| */ |
| |
| #include <crypto/internal/hash.h> |
| #include <crypto/sha.h> |
| #include <crypto/sha512_base.h> |
| #include <linux/crypto.h> |
| #include <linux/module.h> |
| |
| #include <asm/simd.h> |
| #include <asm/neon.h> |
| |
| #include "sha512.h" |
| |
| MODULE_ALIAS_CRYPTO("sha384-neon"); |
| MODULE_ALIAS_CRYPTO("sha512-neon"); |
| |
| asmlinkage void sha512_block_data_order_neon(u64 *state, u8 const *src, |
| int blocks); |
| |
| static int sha512_neon_update(struct shash_desc *desc, const u8 *data, |
| unsigned int len) |
| { |
| struct sha512_state *sctx = shash_desc_ctx(desc); |
| |
| if (!may_use_simd() || |
| (sctx->count[0] % SHA512_BLOCK_SIZE) + len < SHA512_BLOCK_SIZE) |
| return sha512_arm_update(desc, data, len); |
| |
| kernel_neon_begin(); |
| sha512_base_do_update(desc, data, len, |
| (sha512_block_fn *)sha512_block_data_order_neon); |
| kernel_neon_end(); |
| |
| return 0; |
| } |
| |
| static int sha512_neon_finup(struct shash_desc *desc, const u8 *data, |
| unsigned int len, u8 *out) |
| { |
| if (!may_use_simd()) |
| return sha512_arm_finup(desc, data, len, out); |
| |
| kernel_neon_begin(); |
| if (len) |
| sha512_base_do_update(desc, data, len, |
| (sha512_block_fn *)sha512_block_data_order_neon); |
| sha512_base_do_finalize(desc, |
| (sha512_block_fn *)sha512_block_data_order_neon); |
| kernel_neon_end(); |
| |
| return sha512_base_finish(desc, out); |
| } |
| |
| static int sha512_neon_final(struct shash_desc *desc, u8 *out) |
| { |
| return sha512_neon_finup(desc, NULL, 0, out); |
| } |
| |
| struct shash_alg sha512_neon_algs[] = { { |
| .init = sha384_base_init, |
| .update = sha512_neon_update, |
| .final = sha512_neon_final, |
| .finup = sha512_neon_finup, |
| .descsize = sizeof(struct sha512_state), |
| .digestsize = SHA384_DIGEST_SIZE, |
| .base = { |
| .cra_name = "sha384", |
| .cra_driver_name = "sha384-neon", |
| .cra_priority = 300, |
| .cra_blocksize = SHA384_BLOCK_SIZE, |
| .cra_module = THIS_MODULE, |
| |
| } |
| }, { |
| .init = sha512_base_init, |
| .update = sha512_neon_update, |
| .final = sha512_neon_final, |
| .finup = sha512_neon_finup, |
| .descsize = sizeof(struct sha512_state), |
| .digestsize = SHA512_DIGEST_SIZE, |
| .base = { |
| .cra_name = "sha512", |
| .cra_driver_name = "sha512-neon", |
| .cra_priority = 300, |
| .cra_blocksize = SHA512_BLOCK_SIZE, |
| .cra_module = THIS_MODULE, |
| } |
| } }; |