Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * Cryptographic API. | |
3 | * | |
4 | * Support for VIA PadLock hardware crypto engine. | |
5 | * | |
6 | * Copyright (c) 2004 Michal Ludvig <michal@logix.cz> | |
7 | * | |
8 | * This program is free software; you can redistribute it and/or modify | |
9 | * it under the terms of the GNU General Public License as published by | |
10 | * the Free Software Foundation; either version 2 of the License, or | |
11 | * (at your option) any later version. | |
12 | */ | |
13 | ||
14 | #include <linux/module.h> | |
15 | #include <linux/init.h> | |
16 | #include <linux/types.h> | |
17 | #include <linux/errno.h> | |
18 | #include <linux/crypto.h> | |
19 | #include <asm/byteorder.h> | |
20 | #include "padlock.h" | |
21 | ||
22 | static int __init | |
23 | padlock_init(void) | |
24 | { | |
25 | int ret = -ENOSYS; | |
26 | ||
27 | if (!cpu_has_xcrypt) { | |
28 | printk(KERN_ERR PFX "VIA PadLock not detected.\n"); | |
29 | return -ENODEV; | |
30 | } | |
31 | ||
32 | if (!cpu_has_xcrypt_enabled) { | |
33 | printk(KERN_ERR PFX "VIA PadLock detected, but not enabled. Hmm, strange...\n"); | |
34 | return -ENODEV; | |
35 | } | |
36 | ||
37 | #ifdef CONFIG_CRYPTO_DEV_PADLOCK_AES | |
38 | if ((ret = padlock_init_aes())) { | |
39 | printk(KERN_ERR PFX "VIA PadLock AES initialization failed.\n"); | |
40 | return ret; | |
41 | } | |
42 | #endif | |
43 | ||
44 | if (ret == -ENOSYS) | |
45 | printk(KERN_ERR PFX "Hmm, VIA PadLock was compiled without any algorithm.\n"); | |
46 | ||
47 | return ret; | |
48 | } | |
49 | ||
50 | static void __exit | |
51 | padlock_fini(void) | |
52 | { | |
53 | #ifdef CONFIG_CRYPTO_DEV_PADLOCK_AES | |
54 | padlock_fini_aes(); | |
55 | #endif | |
56 | } | |
57 | ||
58 | module_init(padlock_init); | |
59 | module_exit(padlock_fini); | |
60 | ||
61 | MODULE_DESCRIPTION("VIA PadLock crypto engine support."); | |
62 | MODULE_LICENSE("Dual BSD/GPL"); | |
63 | MODULE_AUTHOR("Michal Ludvig"); |