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8#include <crypto/internal/hash.h>
9#include <crypto/sha2.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
19MODULE_DESCRIPTION("Accelerated SHA-384/SHA-512 secure hash for ARM");
20MODULE_AUTHOR("Ard Biesheuvel <ard.biesheuvel@linaro.org>");
21MODULE_LICENSE("GPL v2");
22
23MODULE_ALIAS_CRYPTO("sha384");
24MODULE_ALIAS_CRYPTO("sha512");
25MODULE_ALIAS_CRYPTO("sha384-arm");
26MODULE_ALIAS_CRYPTO("sha512-arm");
27
28asmlinkage void sha512_block_data_order(u64 *state, u8 const *src, int blocks);
29
30int 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
37static int sha512_arm_final(struct shash_desc *desc, u8 *out)
38{
39 sha512_base_do_finalize(desc,
40 (sha512_block_fn *)sha512_block_data_order);
41 return sha512_base_finish(desc, out);
42}
43
44int 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
52static 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,
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,
77 .cra_blocksize = SHA512_BLOCK_SIZE,
78 .cra_module = THIS_MODULE,
79 }
80} };
81
82static 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
99err_unregister:
100 crypto_unregister_shashes(sha512_arm_algs,
101 ARRAY_SIZE(sha512_arm_algs));
102
103 return err;
104}
105
106static 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
115module_init(sha512_arm_mod_init);
116module_exit(sha512_arm_mod_fini);
117
