1// SPDX-License-Identifier: GPL-2.0-only
 2/**
 3 * Routines supporting VMX instructions on the Power 8
 4 *
 5 * Copyright (C) 2015 International Business Machines Inc.
 6 *
 7 * Author: Marcelo Henrique Cerri <mhcerri@br.ibm.com>
 8 */
 9
10#include <linux/module.h>
11#include <linux/moduleparam.h>
12#include <linux/types.h>
13#include <linux/err.h>
14#include <linux/cpufeature.h>
15#include <linux/crypto.h>
16#include <asm/cputable.h>
17#include <crypto/internal/hash.h>
18#include <crypto/internal/skcipher.h>
19
20extern struct shash_alg p8_ghash_alg;
21extern struct crypto_alg p8_aes_alg;
22extern struct skcipher_alg p8_aes_cbc_alg;
23extern struct skcipher_alg p8_aes_ctr_alg;
24extern struct skcipher_alg p8_aes_xts_alg;
25
26static int __init p8_init(void)
27{
28	int ret;
29
30	ret = crypto_register_shash(&p8_ghash_alg);
31	if (ret)
32		goto err;
33
34	ret = crypto_register_alg(&p8_aes_alg);
35	if (ret)
36		goto err_unregister_ghash;
37
38	ret = crypto_register_skcipher(&p8_aes_cbc_alg);
39	if (ret)
40		goto err_unregister_aes;
41
42	ret = crypto_register_skcipher(&p8_aes_ctr_alg);
43	if (ret)
44		goto err_unregister_aes_cbc;
45
46	ret = crypto_register_skcipher(&p8_aes_xts_alg);
47	if (ret)
48		goto err_unregister_aes_ctr;
49
50	return 0;
51
52err_unregister_aes_ctr:
53	crypto_unregister_skcipher(&p8_aes_ctr_alg);
54err_unregister_aes_cbc:
55	crypto_unregister_skcipher(&p8_aes_cbc_alg);
56err_unregister_aes:
57	crypto_unregister_alg(&p8_aes_alg);
58err_unregister_ghash:
59	crypto_unregister_shash(&p8_ghash_alg);
60err:
61	return ret;
62}
63
64static void __exit p8_exit(void)
65{
66	crypto_unregister_skcipher(&p8_aes_xts_alg);
67	crypto_unregister_skcipher(&p8_aes_ctr_alg);
68	crypto_unregister_skcipher(&p8_aes_cbc_alg);
69	crypto_unregister_alg(&p8_aes_alg);
70	crypto_unregister_shash(&p8_ghash_alg);
71}
72
73module_cpu_feature_match(PPC_MODULE_FEATURE_VEC_CRYPTO, p8_init);
74module_exit(p8_exit);
75
76MODULE_AUTHOR("Marcelo Cerri<mhcerri@br.ibm.com>");
77MODULE_DESCRIPTION("IBM VMX cryptographic acceleration instructions "
78		   "support on Power 8");
79MODULE_LICENSE("GPL");
80MODULE_VERSION("1.0.0");