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94 lines
2.3 KiB
94 lines
2.3 KiB
// SPDX-License-Identifier: GPL-2.0-only |
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/* |
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* sha512-neon-glue.c - accelerated SHA-384/512 for ARM NEON |
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* |
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* Copyright (C) 2015 Linaro Ltd <[email protected]> |
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*/ |
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#include <crypto/internal/hash.h> |
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#include <crypto/internal/simd.h> |
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#include <crypto/sha2.h> |
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#include <crypto/sha512_base.h> |
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#include <linux/crypto.h> |
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#include <linux/module.h> |
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#include <asm/simd.h> |
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#include <asm/neon.h> |
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#include "sha512.h" |
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MODULE_ALIAS_CRYPTO("sha384-neon"); |
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MODULE_ALIAS_CRYPTO("sha512-neon"); |
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asmlinkage void sha512_block_data_order_neon(u64 *state, u8 const *src, |
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int blocks); |
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static int sha512_neon_update(struct shash_desc *desc, const u8 *data, |
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unsigned int len) |
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{ |
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struct sha512_state *sctx = shash_desc_ctx(desc); |
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if (!crypto_simd_usable() || |
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(sctx->count[0] % SHA512_BLOCK_SIZE) + len < SHA512_BLOCK_SIZE) |
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return sha512_arm_update(desc, data, len); |
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kernel_neon_begin(); |
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sha512_base_do_update(desc, data, len, |
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(sha512_block_fn *)sha512_block_data_order_neon); |
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kernel_neon_end(); |
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return 0; |
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} |
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static int sha512_neon_finup(struct shash_desc *desc, const u8 *data, |
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unsigned int len, u8 *out) |
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{ |
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if (!crypto_simd_usable()) |
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return sha512_arm_finup(desc, data, len, out); |
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kernel_neon_begin(); |
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if (len) |
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sha512_base_do_update(desc, data, len, |
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(sha512_block_fn *)sha512_block_data_order_neon); |
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sha512_base_do_finalize(desc, |
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(sha512_block_fn *)sha512_block_data_order_neon); |
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kernel_neon_end(); |
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return sha512_base_finish(desc, out); |
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} |
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static int sha512_neon_final(struct shash_desc *desc, u8 *out) |
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{ |
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return sha512_neon_finup(desc, NULL, 0, out); |
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} |
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struct shash_alg sha512_neon_algs[] = { { |
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.init = sha384_base_init, |
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.update = sha512_neon_update, |
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.final = sha512_neon_final, |
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.finup = sha512_neon_finup, |
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.descsize = sizeof(struct sha512_state), |
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.digestsize = SHA384_DIGEST_SIZE, |
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.base = { |
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.cra_name = "sha384", |
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.cra_driver_name = "sha384-neon", |
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.cra_priority = 300, |
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.cra_blocksize = SHA384_BLOCK_SIZE, |
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.cra_module = THIS_MODULE, |
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} |
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}, { |
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.init = sha512_base_init, |
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.update = sha512_neon_update, |
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.final = sha512_neon_final, |
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.finup = sha512_neon_finup, |
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.descsize = sizeof(struct sha512_state), |
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.digestsize = SHA512_DIGEST_SIZE, |
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.base = { |
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.cra_name = "sha512", |
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.cra_driver_name = "sha512-neon", |
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.cra_priority = 300, |
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.cra_blocksize = SHA512_BLOCK_SIZE, |
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.cra_module = THIS_MODULE, |
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} |
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} };
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