linux-imx

/**

 * SHA-512 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/internal/hash.h>

#include <crypto/sha.h>

#include <linux/module.h>

#include <asm/vio.h>

​

#include "nx_csbcpb.h"

#include "nx.h"

​

​

static int nx_crypto_ctx_sha512_init(struct crypto_tfm *tfm)

{

    struct nx_crypto_ctx *nx_ctx = crypto_tfm_ctx(tfm);

    int err;

​

    err = nx_crypto_ctx_sha_init(tfm);

    if (err)

        return err;

​

    nx_ctx_init(nx_ctx, HCOP_FC_SHA);

​

    nx_ctx->ap = &nx_ctx->props[NX_PROPS_SHA512];

​

    NX_CPB_SET_DIGEST_SIZE(nx_ctx->csbcpb, NX_DS_SHA512);

​

    return 0;

}

​

static int nx_sha512_init(struct shash_desc *desc)

{

    struct sha512_state *sctx = shash_desc_ctx(desc);

​

    memset(sctx, 0, sizeof *sctx);

​

    sctx->state[0] = __cpu_to_be64(SHA512_H0);

    sctx->state[1] = __cpu_to_be64(SHA512_H1);

    sctx->state[2] = __cpu_to_be64(SHA512_H2);

    sctx->state[3] = __cpu_to_be64(SHA512_H3);

    sctx->state[4] = __cpu_to_be64(SHA512_H4);

    sctx->state[5] = __cpu_to_be64(SHA512_H5);

    sctx->state[6] = __cpu_to_be64(SHA512_H6);

    sctx->state[7] = __cpu_to_be64(SHA512_H7);

    sctx->count[0] = 0;