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Commit 5644bda5 authored by Michal Ludvig's avatar Michal Ludvig Committed by Herbert Xu
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[CRYPTO] padlock: Helper module padlock.ko 



Compile a helper module padlock.ko that will try
to autoload all configured padlock algorithms.

This also provides backward compatibility with 
the ancient times before padlock.ko was renamed 
to padlock-aes.ko

Signed-off-by: default avatarMichal Ludvig <michal@logix.cz>
Signed-off-by: default avatarHerbert Xu <herbert@gondor.apana.org.au>
parent cb17530b

drivers/crypto/Kconfig

+13 −4
Original line number Diff line number Diff line 
menu "Hardware crypto devices"



config CRYPTO_DEV_PADLOCK

	bool "Support for VIA PadLock ACE"

	tristate "Support for VIA PadLock ACE"

	depends on X86_32

	select CRYPTO_ALGAPI

	default y

	default m

	help

	  Some VIA processors come with an integrated crypto engine

	  (so called VIA PadLock ACE, Advanced Cryptography Engine)
@@ -12,8 +12,17 @@ config CRYPTO_DEV_PADLOCK 
	  operations with supported algorithms.

	  

	  The instructions are used only when the CPU supports them.

	  Otherwise software encryption is used. If you are unsure,

	  say Y.

	  Otherwise software encryption is used.



	  Selecting M for this option will compile a helper module

	  padlock.ko that should autoload all below configured

	  algorithms. Don't worry if your hardware does not support

	  some or all of them. In such case padlock.ko will

	  simply write a single line into the kernel log informing

	  about its failure but everything will keep working fine.



	  If you are unsure, say M. The compiled module will be

	  called padlock.ko



config CRYPTO_DEV_PADLOCK_AES

	tristate "PadLock driver for AES algorithm"

drivers/crypto/Makefile

+1 −0
Original line number Diff line number Diff line 
obj-$(CONFIG_CRYPTO_DEV_PADLOCK) += padlock.o

obj-$(CONFIG_CRYPTO_DEV_PADLOCK_AES) += padlock-aes.o

obj-$(CONFIG_CRYPTO_DEV_PADLOCK_SHA) += padlock-sha.o

drivers/crypto/padlock-aes.c

+0 −3
Original line number Diff line number Diff line
@@ -544,6 +544,3 @@ MODULE_LICENSE("GPL"); 
MODULE_AUTHOR("Michal Ludvig");



MODULE_ALIAS("aes-padlock");
 


/* This module used to be called padlock. */

MODULE_ALIAS("padlock");

drivers/crypto/padlock.c

0 → 100644
+58 −0
Original line number Diff line number Diff line 
/*

 * Cryptographic API.

 *

 * Support for VIA PadLock hardware crypto engine.

 *

 * Copyright (c) 2006  Michal Ludvig <michal@logix.cz>

 *

 * This program is free software; you can redistribute it and/or modify

 * it under the terms of the GNU General Public License as published by

 * the Free Software Foundation; either version 2 of the License, or

 * (at your option) any later version.

 *

 */



#include <linux/module.h>

#include <linux/init.h>

#include <linux/errno.h>

#include <linux/crypto.h>

#include <linux/cryptohash.h>

#include <linux/interrupt.h>

#include <linux/kernel.h>

#include <linux/scatterlist.h>

#include "padlock.h"



static int __init padlock_init(void)

{

	int success = 0;



	if (crypto_alg_available("aes-padlock", 0))

		success++;



	if (crypto_alg_available("sha1-padlock", 0))

		success++;



	if (crypto_alg_available("sha256-padlock", 0))

		success++;



	if (!success) {

		printk(KERN_WARNING PFX "No VIA PadLock drivers have been loaded.\n");

		return -ENODEV;

	}



	printk(KERN_NOTICE PFX "%d drivers are available.\n", success);



	return 0;

}



static void __exit padlock_fini(void)

{

}



module_init(padlock_init);

module_exit(padlock_fini);



MODULE_DESCRIPTION("Load all configured PadLock algorithms.");

MODULE_LICENSE("GPL");

MODULE_AUTHOR("Michal Ludvig");