From 9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 Mon Sep 17 00:00:00 2001 From: Yunhong Jiang Date: Tue, 4 Aug 2015 12:17:53 -0700 Subject: Add the rt linux 4.1.3-rt3 as base Import the rt linux 4.1.3-rt3 as OPNFV kvm base. It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and the base is: commit 0917f823c59692d751951bf5ea699a2d1e2f26a2 Author: Sebastian Andrzej Siewior Date: Sat Jul 25 12:13:34 2015 +0200 Prepare v4.1.3-rt3 Signed-off-by: Sebastian Andrzej Siewior We lose all the git history this way and it's not good. We should apply another opnfv project repo in future. Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423 Signed-off-by: Yunhong Jiang --- kernel/drivers/crypto/vmx/aes.c | 139 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 139 insertions(+) create mode 100644 kernel/drivers/crypto/vmx/aes.c (limited to 'kernel/drivers/crypto/vmx/aes.c') diff --git a/kernel/drivers/crypto/vmx/aes.c b/kernel/drivers/crypto/vmx/aes.c new file mode 100644 index 000000000..ab300ea19 --- /dev/null +++ b/kernel/drivers/crypto/vmx/aes.c @@ -0,0 +1,139 @@ +/** + * AES 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 + */ + +#include +#include +#include +#include +#include +#include +#include + +#include "aesp8-ppc.h" + +struct p8_aes_ctx { + struct crypto_cipher *fallback; + struct aes_key enc_key; + struct aes_key dec_key; +}; + +static int p8_aes_init(struct crypto_tfm *tfm) +{ + const char *alg; + struct crypto_cipher *fallback; + struct p8_aes_ctx *ctx = crypto_tfm_ctx(tfm); + + if (!(alg = crypto_tfm_alg_name(tfm))) { + printk(KERN_ERR "Failed to get algorithm name.\n"); + return -ENOENT; + } + + fallback = crypto_alloc_cipher(alg, 0 ,CRYPTO_ALG_NEED_FALLBACK); + if (IS_ERR(fallback)) { + printk(KERN_ERR "Failed to allocate transformation for '%s': %ld\n", + alg, PTR_ERR(fallback)); + return PTR_ERR(fallback); + } + printk(KERN_INFO "Using '%s' as fallback implementation.\n", + crypto_tfm_alg_driver_name((struct crypto_tfm *) fallback)); + + crypto_cipher_set_flags(fallback, + crypto_cipher_get_flags((struct crypto_cipher *) tfm)); + ctx->fallback = fallback; + + return 0; +} + +static void p8_aes_exit(struct crypto_tfm *tfm) +{ + struct p8_aes_ctx *ctx = crypto_tfm_ctx(tfm); + + if (ctx->fallback) { + crypto_free_cipher(ctx->fallback); + ctx->fallback = NULL; + } +} + +static int p8_aes_setkey(struct crypto_tfm *tfm, const u8 *key, + unsigned int keylen) +{ + int ret; + struct p8_aes_ctx *ctx = crypto_tfm_ctx(tfm); + + pagefault_disable(); + enable_kernel_altivec(); + ret = aes_p8_set_encrypt_key(key, keylen * 8, &ctx->enc_key); + ret += aes_p8_set_decrypt_key(key, keylen * 8, &ctx->dec_key); + pagefault_enable(); + + ret += crypto_cipher_setkey(ctx->fallback, key, keylen); + return ret; +} + +static void p8_aes_encrypt(struct crypto_tfm *tfm, u8 *dst, const u8 *src) +{ + struct p8_aes_ctx *ctx = crypto_tfm_ctx(tfm); + + if (in_interrupt()) { + crypto_cipher_encrypt_one(ctx->fallback, dst, src); + } else { + pagefault_disable(); + enable_kernel_altivec(); + aes_p8_encrypt(src, dst, &ctx->enc_key); + pagefault_enable(); + } +} + +static void p8_aes_decrypt(struct crypto_tfm *tfm, u8 *dst, const u8 *src) +{ + struct p8_aes_ctx *ctx = crypto_tfm_ctx(tfm); + + if (in_interrupt()) { + crypto_cipher_decrypt_one(ctx->fallback, dst, src); + } else { + pagefault_disable(); + enable_kernel_altivec(); + aes_p8_decrypt(src, dst, &ctx->dec_key); + pagefault_enable(); + } +} + +struct crypto_alg p8_aes_alg = { + .cra_name = "aes", + .cra_driver_name = "p8_aes", + .cra_module = THIS_MODULE, + .cra_priority = 1000, + .cra_type = NULL, + .cra_flags = CRYPTO_ALG_TYPE_CIPHER | CRYPTO_ALG_NEED_FALLBACK, + .cra_alignmask = 0, + .cra_blocksize = AES_BLOCK_SIZE, + .cra_ctxsize = sizeof(struct p8_aes_ctx), + .cra_init = p8_aes_init, + .cra_exit = p8_aes_exit, + .cra_cipher = { + .cia_min_keysize = AES_MIN_KEY_SIZE, + .cia_max_keysize = AES_MAX_KEY_SIZE, + .cia_setkey = p8_aes_setkey, + .cia_encrypt = p8_aes_encrypt, + .cia_decrypt = p8_aes_decrypt, + }, +}; + -- cgit 1.2.3-korg