projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 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"); |