diff options
Diffstat (limited to 'drivers/crypto')
| -rw-r--r-- | drivers/crypto/Kconfig | 16 | ||||
| -rw-r--r-- | drivers/crypto/Makefile | 8 | ||||
| -rw-r--r-- | drivers/crypto/padlock-aes.c | 34 | ||||
| -rw-r--r-- | drivers/crypto/padlock-generic.c | 63 |
4 files changed, 42 insertions, 79 deletions
diff --git a/drivers/crypto/Kconfig b/drivers/crypto/Kconfig index ba23683ab8c4..d260c86218fa 100644 --- a/drivers/crypto/Kconfig +++ b/drivers/crypto/Kconfig @@ -1,24 +1,30 @@ menu "Hardware crypto devices" config CRYPTO_DEV_PADLOCK - tristate "Support for VIA PadLock ACE" + bool "Support for VIA PadLock ACE" depends on X86_32 select CRYPTO_ALGAPI + 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 + endmenu diff --git a/drivers/crypto/Makefile b/drivers/crypto/Makefile index 45426ca19a23..5e7d7d5e805a 100644 --- a/drivers/crypto/Makefile +++ b/drivers/crypto/Makefile @@ -1,7 +1 @@ - -obj-$(CONFIG_CRYPTO_DEV_PADLOCK) += padlock.o - -padlock-objs-$(CONFIG_CRYPTO_DEV_PADLOCK_AES) += padlock-aes.o - -padlock-objs := padlock-generic.o $(padlock-objs-y) - +obj-$(CONFIG_CRYPTO_DEV_PADLOCK_AES) += padlock-aes.o diff --git a/drivers/crypto/padlock-aes.c b/drivers/crypto/padlock-aes.c index b643d71298a9..ee33bd6c1b77 100644 --- a/drivers/crypto/padlock-aes.c +++ b/drivers/crypto/padlock-aes.c @@ -495,15 +495,41 @@ 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"); diff --git a/drivers/crypto/padlock-generic.c b/drivers/crypto/padlock-generic.c deleted file mode 100644 index 18cf0e8274a7..000000000000 --- a/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 <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/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"); |