mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-10-30 16:07:39 +00:00
c07f5d3da6
This patch add XTS support using VMX-crypto driver. Signed-off-by: Leonidas S. Barbosa <leosilva@linux.vnet.ibm.com> Signed-off-by: Paulo Flabiano Smorigo <pfsmorigo@linux.vnet.ibm.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
90 lines
2.4 KiB
C
90 lines
2.4 KiB
C
/**
|
|
* Routines supporting VMX instructions on the Power 8
|
|
*
|
|
* Copyright (C) 2015 International Business Machines Inc.
|
|
*
|
|
* 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; version 2 only.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
|
|
*
|
|
* Author: Marcelo Henrique Cerri <mhcerri@br.ibm.com>
|
|
*/
|
|
|
|
#include <linux/module.h>
|
|
#include <linux/moduleparam.h>
|
|
#include <linux/types.h>
|
|
#include <linux/err.h>
|
|
#include <linux/crypto.h>
|
|
#include <asm/cputable.h>
|
|
#include <crypto/internal/hash.h>
|
|
|
|
extern struct shash_alg p8_ghash_alg;
|
|
extern struct crypto_alg p8_aes_alg;
|
|
extern struct crypto_alg p8_aes_cbc_alg;
|
|
extern struct crypto_alg p8_aes_ctr_alg;
|
|
extern struct crypto_alg p8_aes_xts_alg;
|
|
static struct crypto_alg *algs[] = {
|
|
&p8_aes_alg,
|
|
&p8_aes_cbc_alg,
|
|
&p8_aes_ctr_alg,
|
|
&p8_aes_xts_alg,
|
|
NULL,
|
|
};
|
|
|
|
int __init p8_init(void)
|
|
{
|
|
int ret = 0;
|
|
struct crypto_alg **alg_it;
|
|
|
|
if (!(cur_cpu_spec->cpu_user_features2 & PPC_FEATURE2_VEC_CRYPTO))
|
|
return -ENODEV;
|
|
|
|
for (alg_it = algs; *alg_it; alg_it++) {
|
|
ret = crypto_register_alg(*alg_it);
|
|
printk(KERN_INFO "crypto_register_alg '%s' = %d\n",
|
|
(*alg_it)->cra_name, ret);
|
|
if (ret) {
|
|
for (alg_it--; alg_it >= algs; alg_it--)
|
|
crypto_unregister_alg(*alg_it);
|
|
break;
|
|
}
|
|
}
|
|
if (ret)
|
|
return ret;
|
|
|
|
ret = crypto_register_shash(&p8_ghash_alg);
|
|
if (ret) {
|
|
for (alg_it = algs; *alg_it; alg_it++)
|
|
crypto_unregister_alg(*alg_it);
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
void __exit p8_exit(void)
|
|
{
|
|
struct crypto_alg **alg_it;
|
|
|
|
for (alg_it = algs; *alg_it; alg_it++) {
|
|
printk(KERN_INFO "Removing '%s'\n", (*alg_it)->cra_name);
|
|
crypto_unregister_alg(*alg_it);
|
|
}
|
|
crypto_unregister_shash(&p8_ghash_alg);
|
|
}
|
|
|
|
module_init(p8_init);
|
|
module_exit(p8_exit);
|
|
|
|
MODULE_AUTHOR("Marcelo Cerri<mhcerri@br.ibm.com>");
|
|
MODULE_DESCRIPTION("IBM VMX cryptographic acceleration instructions "
|
|
"support on Power 8");
|
|
MODULE_LICENSE("GPL");
|
|
MODULE_VERSION("1.0.0");
|