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d2912cb1 | 1 | // SPDX-License-Identifier: GPL-2.0-only |
c80ae7ca AB |
2 | /* |
3 | * sha512-glue.c - accelerated SHA-384/512 for ARM | |
4 | * | |
5 | * Copyright (C) 2015 Linaro Ltd <ard.biesheuvel@linaro.org> | |
c80ae7ca AB |
6 | */ |
7 | ||
8 | #include <crypto/internal/hash.h> | |
9 | #include <crypto/sha.h> | |
10 | #include <crypto/sha512_base.h> | |
11 | #include <linux/crypto.h> | |
12 | #include <linux/module.h> | |
13 | ||
14 | #include <asm/hwcap.h> | |
15 | #include <asm/neon.h> | |
16 | ||
17 | #include "sha512.h" | |
18 | ||
19 | MODULE_DESCRIPTION("Accelerated SHA-384/SHA-512 secure hash for ARM"); | |
20 | MODULE_AUTHOR("Ard Biesheuvel <ard.biesheuvel@linaro.org>"); | |
21 | MODULE_LICENSE("GPL v2"); | |
22 | ||
23 | MODULE_ALIAS_CRYPTO("sha384"); | |
24 | MODULE_ALIAS_CRYPTO("sha512"); | |
25 | MODULE_ALIAS_CRYPTO("sha384-arm"); | |
26 | MODULE_ALIAS_CRYPTO("sha512-arm"); | |
27 | ||
28 | asmlinkage void sha512_block_data_order(u64 *state, u8 const *src, int blocks); | |
29 | ||
30 | int sha512_arm_update(struct shash_desc *desc, const u8 *data, | |
31 | unsigned int len) | |
32 | { | |
33 | return sha512_base_do_update(desc, data, len, | |
34 | (sha512_block_fn *)sha512_block_data_order); | |
35 | } | |
36 | ||
efc77e81 | 37 | static int sha512_arm_final(struct shash_desc *desc, u8 *out) |
c80ae7ca AB |
38 | { |
39 | sha512_base_do_finalize(desc, | |
40 | (sha512_block_fn *)sha512_block_data_order); | |
41 | return sha512_base_finish(desc, out); | |
42 | } | |
43 | ||
44 | int sha512_arm_finup(struct shash_desc *desc, const u8 *data, | |
45 | unsigned int len, u8 *out) | |
46 | { | |
47 | sha512_base_do_update(desc, data, len, | |
48 | (sha512_block_fn *)sha512_block_data_order); | |
49 | return sha512_arm_final(desc, out); | |
50 | } | |
51 | ||
52 | static struct shash_alg sha512_arm_algs[] = { { | |
53 | .init = sha384_base_init, | |
54 | .update = sha512_arm_update, | |
55 | .final = sha512_arm_final, | |
56 | .finup = sha512_arm_finup, | |
57 | .descsize = sizeof(struct sha512_state), | |
58 | .digestsize = SHA384_DIGEST_SIZE, | |
59 | .base = { | |
60 | .cra_name = "sha384", | |
61 | .cra_driver_name = "sha384-arm", | |
62 | .cra_priority = 250, | |
c80ae7ca AB |
63 | .cra_blocksize = SHA512_BLOCK_SIZE, |
64 | .cra_module = THIS_MODULE, | |
65 | } | |
66 | }, { | |
67 | .init = sha512_base_init, | |
68 | .update = sha512_arm_update, | |
69 | .final = sha512_arm_final, | |
70 | .finup = sha512_arm_finup, | |
71 | .descsize = sizeof(struct sha512_state), | |
72 | .digestsize = SHA512_DIGEST_SIZE, | |
73 | .base = { | |
74 | .cra_name = "sha512", | |
75 | .cra_driver_name = "sha512-arm", | |
76 | .cra_priority = 250, | |
c80ae7ca AB |
77 | .cra_blocksize = SHA512_BLOCK_SIZE, |
78 | .cra_module = THIS_MODULE, | |
79 | } | |
80 | } }; | |
81 | ||
82 | static int __init sha512_arm_mod_init(void) | |
83 | { | |
84 | int err; | |
85 | ||
86 | err = crypto_register_shashes(sha512_arm_algs, | |
87 | ARRAY_SIZE(sha512_arm_algs)); | |
88 | if (err) | |
89 | return err; | |
90 | ||
91 | if (IS_ENABLED(CONFIG_KERNEL_MODE_NEON) && cpu_has_neon()) { | |
92 | err = crypto_register_shashes(sha512_neon_algs, | |
93 | ARRAY_SIZE(sha512_neon_algs)); | |
94 | if (err) | |
95 | goto err_unregister; | |
96 | } | |
97 | return 0; | |
98 | ||
99 | err_unregister: | |
100 | crypto_unregister_shashes(sha512_arm_algs, | |
101 | ARRAY_SIZE(sha512_arm_algs)); | |
102 | ||
103 | return err; | |
104 | } | |
105 | ||
106 | static void __exit sha512_arm_mod_fini(void) | |
107 | { | |
108 | crypto_unregister_shashes(sha512_arm_algs, | |
109 | ARRAY_SIZE(sha512_arm_algs)); | |
110 | if (IS_ENABLED(CONFIG_KERNEL_MODE_NEON) && cpu_has_neon()) | |
111 | crypto_unregister_shashes(sha512_neon_algs, | |
112 | ARRAY_SIZE(sha512_neon_algs)); | |
113 | } | |
114 | ||
115 | module_init(sha512_arm_mod_init); | |
116 | module_exit(sha512_arm_mod_fini); |