1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
|
// SPDX-License-Identifier: GPL-2.0-only
/*
* sha512-neon-glue.c - accelerated SHA-384/512 for ARM NEON
*
* Copyright (C) 2015 Linaro Ltd <ard.biesheuvel@linaro.org>
*/
#include <crypto/internal/hash.h>
#include <crypto/internal/simd.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 (!crypto_simd_usable() ||
(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 (!crypto_simd_usable())
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,
}
} };
|
