Merge padlock-generic.c into padlock-aes.c and compile
AES as a standalone module. We won't make a monolithic
padlock.ko with all supported algorithms, instead we'll
compile each driver into its own module.
Signed-off-by: Michal Ludvig <[EMAIL PROTECTED]>
Index: linux-2.6.16.13-xenU/drivers/crypto/Kconfig
===================================================================
--- linux-2.6.16.13-xenU.orig/drivers/crypto/Kconfig
+++ linux-2.6.16.13-xenU/drivers/crypto/Kconfig
@@ -1,25 +1,31 @@
menu "Hardware crypto devices"
config CRYPTO_DEV_PADLOCK
- tristate "Support for VIA PadLock ACE"
+ bool "Support for VIA PadLock ACE"
depends on CRYPTO && X86_32
+ default y
help
Some VIA processors come with an integrated crypto engine
(so called VIA PadLock ACE, Advanced Cryptography Engine)
- that provides instructions for very fast {en,de}cryption
- with some algorithms.
+ that provides instructions for very fast cryptographic
+ 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.
config CRYPTO_DEV_PADLOCK_AES
- bool "Support for AES in VIA PadLock"
+ tristate "PadLock driver for AES algorithm"
depends on CRYPTO_DEV_PADLOCK
- default y
+ default m
help
Use VIA PadLock for AES algorithm.
+ Available in VIA C3 and newer CPUs.
+
+ If unsure say M. The compiled module will be
+ called padlock-aes.ko
+
config CRYPTO_DEV_PADLOCK_SHA
tristate "PadLock driver for SHA1 and SHA256 algorithms"
depends on CRYPTO_DEV_PADLOCK
Index: linux-2.6.16.13-xenU/drivers/crypto/Makefile
===================================================================
--- linux-2.6.16.13-xenU.orig/drivers/crypto/Makefile
+++ linux-2.6.16.13-xenU/drivers/crypto/Makefile
@@ -1,8 +1,2 @@
-
-obj-$(CONFIG_CRYPTO_DEV_PADLOCK) += padlock.o
-
-padlock-objs-$(CONFIG_CRYPTO_DEV_PADLOCK_AES) += padlock-aes.o
+obj-$(CONFIG_CRYPTO_DEV_PADLOCK_AES) += padlock-aes.o
obj-$(CONFIG_CRYPTO_DEV_PADLOCK_SHA) += padlock-sha.o
-
-padlock-objs := padlock-generic.o $(padlock-objs-y)
-
Index: linux-2.6.16.13-xenU/drivers/crypto/padlock-aes.c
===================================================================
--- linux-2.6.16.13-xenU.orig/drivers/crypto/padlock-aes.c
+++ linux-2.6.16.13-xenU/drivers/crypto/padlock-aes.c
@@ -490,15 +490,43 @@ static struct crypto_alg aes_alg = {
}
};
-int __init padlock_init_aes(void)
+static int __init
+padlock_init(void)
{
- printk(KERN_NOTICE PFX "Using VIA PadLock ACE for AES algorithm.\n");
+ int ret;
+
+ if (!cpu_has_xcrypt) {
+ printk(KERN_ERR PFX "VIA PadLock not detected.\n");
+ return -ENODEV;
+ }
+
+ if (!cpu_has_xcrypt_enabled) {
+ printk(KERN_ERR PFX "VIA PadLock detected, but not enabled.
Hmm, strange...\n");
+ return -ENODEV;
+ }
gen_tabs();
- return crypto_register_alg(&aes_alg);
+ if ((ret = crypto_register_alg(&aes_alg))) {
+ printk(KERN_ERR PFX "VIA PadLock AES initialization failed.\n");
+ return ret;
+ }
+
+ printk(KERN_NOTICE PFX "Using VIA PadLock ACE for AES algorithm.\n");
+
+ return ret;
}
-void __exit padlock_fini_aes(void)
+static void __exit
+padlock_fini(void)
{
crypto_unregister_alg(&aes_alg);
}
+
+module_init(padlock_init);
+module_exit(padlock_fini);
+
+MODULE_DESCRIPTION("VIA PadLock AES algorithm support");
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Michal Ludvig");
+
+MODULE_ALIAS("aes-padlock");
Index: linux-2.6.16.13-xenU/drivers/crypto/padlock-generic.c
===================================================================
--- linux-2.6.16.13-xenU.orig/drivers/crypto/padlock-generic.c
+++ /dev/null
@@ -1,63 +0,0 @@
-/*
- * Cryptographic API.
- *
- * Support for VIA PadLock hardware crypto engine.
- *
- * Copyright (c) 2004 Michal Ludvig <[EMAIL PROTECTED]>
- *
- * 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/types.h>
-#include <linux/errno.h>
-#include <linux/crypto.h>
-#include <asm/byteorder.h>
-#include "padlock.h"
-
-static int __init
-padlock_init(void)
-{
- int ret = -ENOSYS;
-
- if (!cpu_has_xcrypt) {
- printk(KERN_ERR PFX "VIA PadLock not detected.\n");
- return -ENODEV;
- }
-
- if (!cpu_has_xcrypt_enabled) {
- printk(KERN_ERR PFX "VIA PadLock detected, but not enabled.
Hmm, strange...\n");
- return -ENODEV;
- }
-
-#ifdef CONFIG_CRYPTO_DEV_PADLOCK_AES
- if ((ret = padlock_init_aes())) {
- printk(KERN_ERR PFX "VIA PadLock AES initialization failed.\n");
- return ret;
- }
-#endif
-
- if (ret == -ENOSYS)
- printk(KERN_ERR PFX "Hmm, VIA PadLock was compiled without any
algorithm.\n");
-
- return ret;
-}
-
-static void __exit
-padlock_fini(void)
-{
-#ifdef CONFIG_CRYPTO_DEV_PADLOCK_AES
- padlock_fini_aes();
-#endif
-}
-
-module_init(padlock_init);
-module_exit(padlock_fini);
-
-MODULE_DESCRIPTION("VIA PadLock crypto engine support.");
-MODULE_LICENSE("Dual BSD/GPL");
-MODULE_AUTHOR("Michal Ludvig");
--
-
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