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d2912cb1 | 1 | // SPDX-License-Identifier: GPL-2.0-only |
c80ae7ca AB |
2 | /* |
3 | * sha512-neon-glue.c - accelerated SHA-384/512 for ARM NEON | |
4 | * | |
5 | * Copyright (C) 2015 Linaro Ltd <ard.biesheuvel@linaro.org> | |
c80ae7ca AB |
6 | */ |
7 | ||
8 | #include <crypto/internal/hash.h> | |
99680c5e | 9 | #include <crypto/internal/simd.h> |
a24d22b2 | 10 | #include <crypto/sha2.h> |
c80ae7ca AB |
11 | #include <crypto/sha512_base.h> |
12 | #include <linux/crypto.h> | |
13 | #include <linux/module.h> | |
14 | ||
15 | #include <asm/simd.h> | |
16 | #include <asm/neon.h> | |
17 | ||
18 | #include "sha512.h" | |
19 | ||
20 | MODULE_ALIAS_CRYPTO("sha384-neon"); | |
21 | MODULE_ALIAS_CRYPTO("sha512-neon"); | |
22 | ||
23 | asmlinkage void sha512_block_data_order_neon(u64 *state, u8 const *src, | |
24 | int blocks); | |
25 | ||
26 | static int sha512_neon_update(struct shash_desc *desc, const u8 *data, | |
27 | unsigned int len) | |
28 | { | |
29 | struct sha512_state *sctx = shash_desc_ctx(desc); | |
30 | ||
99680c5e | 31 | if (!crypto_simd_usable() || |
c80ae7ca AB |
32 | (sctx->count[0] % SHA512_BLOCK_SIZE) + len < SHA512_BLOCK_SIZE) |
33 | return sha512_arm_update(desc, data, len); | |
34 | ||
35 | kernel_neon_begin(); | |
36 | sha512_base_do_update(desc, data, len, | |
37 | (sha512_block_fn *)sha512_block_data_order_neon); | |
38 | kernel_neon_end(); | |
39 | ||
40 | return 0; | |
41 | } | |
42 | ||
43 | static int sha512_neon_finup(struct shash_desc *desc, const u8 *data, | |
44 | unsigned int len, u8 *out) | |
45 | { | |
99680c5e | 46 | if (!crypto_simd_usable()) |
c80ae7ca AB |
47 | return sha512_arm_finup(desc, data, len, out); |
48 | ||
49 | kernel_neon_begin(); | |
50 | if (len) | |
51 | sha512_base_do_update(desc, data, len, | |
52 | (sha512_block_fn *)sha512_block_data_order_neon); | |
53 | sha512_base_do_finalize(desc, | |
54 | (sha512_block_fn *)sha512_block_data_order_neon); | |
55 | kernel_neon_end(); | |
56 | ||
57 | return sha512_base_finish(desc, out); | |
58 | } | |
59 | ||
60 | static int sha512_neon_final(struct shash_desc *desc, u8 *out) | |
61 | { | |
62 | return sha512_neon_finup(desc, NULL, 0, out); | |
63 | } | |
64 | ||
65 | struct shash_alg sha512_neon_algs[] = { { | |
66 | .init = sha384_base_init, | |
67 | .update = sha512_neon_update, | |
68 | .final = sha512_neon_final, | |
69 | .finup = sha512_neon_finup, | |
70 | .descsize = sizeof(struct sha512_state), | |
71 | .digestsize = SHA384_DIGEST_SIZE, | |
72 | .base = { | |
73 | .cra_name = "sha384", | |
74 | .cra_driver_name = "sha384-neon", | |
75 | .cra_priority = 300, | |
c80ae7ca AB |
76 | .cra_blocksize = SHA384_BLOCK_SIZE, |
77 | .cra_module = THIS_MODULE, | |
78 | ||
79 | } | |
80 | }, { | |
81 | .init = sha512_base_init, | |
82 | .update = sha512_neon_update, | |
83 | .final = sha512_neon_final, | |
84 | .finup = sha512_neon_finup, | |
85 | .descsize = sizeof(struct sha512_state), | |
86 | .digestsize = SHA512_DIGEST_SIZE, | |
87 | .base = { | |
88 | .cra_name = "sha512", | |
89 | .cra_driver_name = "sha512-neon", | |
90 | .cra_priority = 300, | |
c80ae7ca AB |
91 | .cra_blocksize = SHA512_BLOCK_SIZE, |
92 | .cra_module = THIS_MODULE, | |
93 | } | |
94 | } }; |