64 lines
1.4 KiB
C
64 lines
1.4 KiB
C
/*
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* Cryptographic API.
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*
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* Support for VIA PadLock hardware crypto engine.
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*
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* Copyright (c) 2004 Michal Ludvig <michal@logix.cz>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*/
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#include <linux/module.h>
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#include <linux/init.h>
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#include <linux/types.h>
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#include <linux/errno.h>
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#include <linux/crypto.h>
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#include <asm/byteorder.h>
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#include "padlock.h"
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static int __init
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padlock_init(void)
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{
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int ret = -ENOSYS;
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if (!cpu_has_xcrypt) {
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printk(KERN_ERR PFX "VIA PadLock not detected.\n");
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return -ENODEV;
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}
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if (!cpu_has_xcrypt_enabled) {
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printk(KERN_ERR PFX "VIA PadLock detected, but not enabled. Hmm, strange...\n");
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return -ENODEV;
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}
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#ifdef CONFIG_CRYPTO_DEV_PADLOCK_AES
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if ((ret = padlock_init_aes())) {
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printk(KERN_ERR PFX "VIA PadLock AES initialization failed.\n");
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return ret;
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}
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#endif
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if (ret == -ENOSYS)
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printk(KERN_ERR PFX "Hmm, VIA PadLock was compiled without any algorithm.\n");
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return ret;
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}
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static void __exit
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padlock_fini(void)
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{
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#ifdef CONFIG_CRYPTO_DEV_PADLOCK_AES
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padlock_fini_aes();
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#endif
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}
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module_init(padlock_init);
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module_exit(padlock_fini);
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MODULE_DESCRIPTION("VIA PadLock crypto engine support.");
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MODULE_LICENSE("Dual BSD/GPL");
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MODULE_AUTHOR("Michal Ludvig");
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