From: Kent Yoder <key@linux.vnet.ibm.com>
To: linux-kernel@vger.kernel.org
Cc: rcj@linux.vnet.ibm.com, linuxppc-dev@lists.ozlabs.org,
linux-crypto@vger.kernel.org
Subject: [PATCH 09/17] powerpc: crypto: AES-ECB mode routines for nx encryption
Date: Wed, 21 Mar 2012 16:40:10 -0500 [thread overview]
Message-ID: <1332366010.3858.40.camel@key-ThinkPad-W510> (raw)
In-Reply-To: <1332365297.3858.5.camel@key-ThinkPad-W510>
These routines add support for AES in ECB mode on the Power7+ CPU's
in-Nest accelerator driver.
Signed-off-by: Kent Yoder <key@linux.vnet.ibm.com>
---
arch/powerpc/crypto/nx/nx-aes-ecb.c | 133 +++++++++++++++++++++++++++++++++++
1 files changed, 133 insertions(+), 0 deletions(-)
create mode 100644 arch/powerpc/crypto/nx/nx-aes-ecb.c
diff --git a/arch/powerpc/crypto/nx/nx-aes-ecb.c b/arch/powerpc/crypto/nx/nx-aes-ecb.c
new file mode 100644
index 0000000..7ceef65
--- /dev/null
+++ b/arch/powerpc/crypto/nx/nx-aes-ecb.c
@@ -0,0 +1,133 @@
+/**
+ * AES ECB routines supporting the Power 7+ Nest Accelerators driver
+ *
+ * Copyright (C) 2011-2012 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: Kent Yoder <yoder1@us.ibm.com>
+ */
+
+#include <crypto/aes.h>
+#include <crypto/algapi.h>
+#include <linux/module.h>
+#include <linux/types.h>
+#include <linux/crypto.h>
+#include <asm/vio.h>
+
+#include "nx_csbcpb.h"
+#include "nx.h"
+
+
+static int ecb_aes_nx_set_key(struct crypto_tfm *tfm,
+ const u8 *in_key,
+ unsigned int key_len)
+{
+ struct nx_crypto_ctx *nx_ctx = crypto_tfm_ctx(tfm);
+ struct nx_csbcpb *csbcpb = (struct nx_csbcpb *)nx_ctx->csbcpb;
+
+ nx_ctx_init(nx_ctx, HCOP_FC_AES);
+
+ switch (key_len) {
+ case AES_KEYSIZE_128:
+ csbcpb->cpb.hdr.key_size = NX_KS_AES_128;
+ nx_ctx->ap = &nx_ctx->props[NX_PROPS_AES_128];
+ break;
+ case AES_KEYSIZE_192:
+ csbcpb->cpb.hdr.key_size = NX_KS_AES_192;
+ nx_ctx->ap = &nx_ctx->props[NX_PROPS_AES_192];
+ break;
+ case AES_KEYSIZE_256:
+ csbcpb->cpb.hdr.key_size = NX_KS_AES_256;
+ nx_ctx->ap = &nx_ctx->props[NX_PROPS_AES_256];
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ csbcpb->cpb.hdr.mode = NX_MODE_AES_ECB;
+ memcpy(csbcpb->cpb.aes_ecb.key, in_key, key_len);
+
+ return 0;
+}
+
+static int ecb_aes_nx_crypt(struct blkcipher_desc *desc,
+ struct scatterlist *dst,
+ struct scatterlist *src,
+ unsigned int nbytes,
+ int enc)
+{
+ struct nx_crypto_ctx *nx_ctx = crypto_blkcipher_ctx(desc->tfm);
+ struct nx_csbcpb *csbcpb = nx_ctx->csbcpb;
+ int rc;
+
+ if (nbytes > nx_ctx->ap->databytelen)
+ return -EINVAL;
+
+ csbcpb->cpb.hdr.fdm.ende = enc;
+
+ rc = nx_build_sg_lists(nx_ctx, desc, dst, src, nbytes, NULL);
+ if (rc)
+ goto out;
+
+ if (!nx_ctx->op.inlen || !nx_ctx->op.outlen)
+ return -EINVAL;
+
+ rc = nx_hcall_sync(nx_ctx, &nx_ctx->op);
+ if (rc)
+ goto out;
+
+ atomic_inc(&(nx_ctx->stats->aes_ops));
+ atomic64_add(csbcpb->csb.processed_byte_count,
+ &(nx_ctx->stats->aes_bytes));
+out:
+ return rc;
+}
+
+static int ecb_aes_nx_encrypt(struct blkcipher_desc *desc,
+ struct scatterlist *dst,
+ struct scatterlist *src,
+ unsigned int nbytes)
+{
+ return ecb_aes_nx_crypt(desc, dst, src, nbytes, 1);
+}
+
+static int ecb_aes_nx_decrypt(struct blkcipher_desc *desc,
+ struct scatterlist *dst,
+ struct scatterlist *src,
+ unsigned int nbytes)
+{
+ return ecb_aes_nx_crypt(desc, dst, src, nbytes, 0);
+}
+
+struct crypto_alg nx_ecb_aes_alg = {
+ .cra_name = "ecb(aes)",
+ .cra_driver_name = "ecb-aes-nx",
+ .cra_priority = 300,
+ .cra_flags = CRYPTO_ALG_TYPE_BLKCIPHER,
+ .cra_blocksize = AES_BLOCK_SIZE,
+ .cra_ctxsize = sizeof(struct nx_crypto_ctx),
+ .cra_type = &crypto_blkcipher_type,
+ .cra_module = THIS_MODULE,
+ .cra_list = LIST_HEAD_INIT(nx_ecb_aes_alg.cra_list),
+ .cra_init = nx_crypto_ctx_aes_ecb_init,
+ .cra_exit = nx_crypto_ctx_exit,
+ .cra_blkcipher = {
+ .min_keysize = AES_MIN_KEY_SIZE,
+ .max_keysize = AES_MAX_KEY_SIZE,
+ .setkey = ecb_aes_nx_set_key,
+ .encrypt = ecb_aes_nx_encrypt,
+ .decrypt = ecb_aes_nx_decrypt,
+ }
+};
--
1.7.1
next prev parent reply other threads:[~2012-03-21 21:39 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-03-21 21:28 [PATCH 00/17] Platform Facilities Option and crypto accelerator driver Kent Yoder
2012-03-21 21:37 ` [PATCH 01/17] powerpc: Add new hvcall constants to support PFO Kent Yoder
2012-03-21 21:38 ` [PATCH 02/17] powerpc: Add pseries update notifier for OFDT prop changes Kent Yoder
2012-03-21 21:38 ` [PATCH 03/17] powerpc: Add PFO support to the VIO bus Kent Yoder
2012-03-21 21:38 ` [PATCH 04/17] hwrng: pseries - PFO-based hwrng driver Kent Yoder
2012-03-21 21:39 ` [PATCH 05/17] pseries: Enabled the PFO-based RNG accelerator Kent Yoder
2012-03-22 9:55 ` Anton Blanchard
2012-03-21 21:39 ` [PATCH 06/17] powerpc: crypto: AES-CBC mode routines for nx encryption Kent Yoder
2012-03-21 21:39 ` [PATCH 07/17] powerpc: crypto: AES-CCM " Kent Yoder
2012-03-21 21:40 ` [PATCH 08/17] powerpc: crypto: AES-CTR " Kent Yoder
2012-03-21 21:40 ` Kent Yoder [this message]
2012-03-21 21:40 ` [PATCH 10/17] powerpc: crypto: AES-GCM " Kent Yoder
2012-03-21 21:40 ` [PATCH 11/17] powerpc: crypto: AES-XCBC " Kent Yoder
2012-03-21 21:40 ` [PATCH 12/17] powerpc: crypto: SHA256 hash " Kent Yoder
2012-03-21 21:40 ` [PATCH 13/17] powerpc: crypto: SHA512 " Kent Yoder
2012-03-21 21:41 ` [PATCH 14/17] powerpc: crypto: nx driver code supporting " Kent Yoder
2012-03-21 22:15 ` Greg KH
2012-03-22 1:50 ` Benjamin Herrenschmidt
2012-03-22 2:57 ` Benjamin Herrenschmidt
2012-03-22 3:39 ` Greg KH
2012-03-22 5:39 ` Benjamin Herrenschmidt
2012-03-21 21:41 ` [PATCH 15/17] powerpc: crypto: sysfs routines and docs for the nx device driver Kent Yoder
2012-03-21 22:11 ` Greg KH
2012-03-21 22:46 ` Kent Yoder
2012-03-21 21:41 ` [PATCH 16/17] powerpc: crypto: Build files " Kent Yoder
2012-03-21 21:41 ` [PATCH 17/17] powerpc: crypto: enable the PFO-based encryption device Kent Yoder
2012-03-22 17:17 ` [PATCH 00/17] Platform Facilities Option and crypto accelerator driver Kumar Gala
2012-03-22 19:08 ` Kent Yoder
2012-03-23 16:06 ` Kumar Gala
2012-03-26 16:10 ` Kent Yoder
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