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234 lines
8.0 KiB
234 lines
8.0 KiB
From 249c8d98ea339325dca481d5dae93686cd494059 Mon Sep 17 00:00:00 2001
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From: Christian Lamparter <chunkeey@googlemail.com>
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Date: Fri, 25 Aug 2017 15:47:20 +0200
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Subject: [PATCH 07/25] crypto: crypto4xx - move and refactor dynamic_contents
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helpers
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This patch refactors and moves the dynamic_contents helper
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functions into the crypto4xx_sa.h header file.
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* get_dynamic_sa_iv_size is no longer needed, as the cryptoapi
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provides the required IV size information as well.
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* refactor the function declarations to use the a pointer to the
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dynamic_sa_contents union, instead of the crypto4xx_ctx.
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* rename get_dynamic_sa_offset_key_field to get_dynamic_sa_key_field.
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It returns the pointer to the key directly.
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Signed-off-by: Christian Lamparter <chunkeey@googlemail.com>
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Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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---
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drivers/crypto/amcc/Makefile | 2 +-
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drivers/crypto/amcc/crypto4xx_alg.c | 20 ++++-----
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drivers/crypto/amcc/crypto4xx_core.h | 3 --
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drivers/crypto/amcc/crypto4xx_sa.c | 85 ------------------------------------
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drivers/crypto/amcc/crypto4xx_sa.h | 28 ++++++++++++
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5 files changed, 39 insertions(+), 99 deletions(-)
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delete mode 100644 drivers/crypto/amcc/crypto4xx_sa.c
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--- a/drivers/crypto/amcc/Makefile
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+++ b/drivers/crypto/amcc/Makefile
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@@ -1,3 +1,3 @@
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obj-$(CONFIG_CRYPTO_DEV_PPC4XX) += crypto4xx.o
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-crypto4xx-y := crypto4xx_core.o crypto4xx_alg.o crypto4xx_sa.o
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+crypto4xx-y := crypto4xx_core.o crypto4xx_alg.o
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crypto4xx-$(CONFIG_HW_RANDOM_PPC4XX) += crypto4xx_trng.o
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--- a/drivers/crypto/amcc/crypto4xx_alg.c
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+++ b/drivers/crypto/amcc/crypto4xx_alg.c
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@@ -29,8 +29,8 @@
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#include <crypto/aes.h>
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#include <crypto/sha.h>
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#include "crypto4xx_reg_def.h"
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-#include "crypto4xx_sa.h"
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#include "crypto4xx_core.h"
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+#include "crypto4xx_sa.h"
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static void set_dynamic_sa_command_0(struct dynamic_sa_ctl *sa, u32 save_h,
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u32 save_iv, u32 ld_h, u32 ld_iv,
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@@ -79,8 +79,8 @@ int crypto4xx_encrypt(struct ablkcipher_
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ctx->pd_ctl = 0x1;
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return crypto4xx_build_pd(&req->base, ctx, req->src, req->dst,
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- req->nbytes, req->info,
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- get_dynamic_sa_iv_size(ctx));
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+ req->nbytes, req->info,
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+ crypto_ablkcipher_ivsize(crypto_ablkcipher_reqtfm(req)));
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}
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int crypto4xx_decrypt(struct ablkcipher_request *req)
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@@ -92,8 +92,8 @@ int crypto4xx_decrypt(struct ablkcipher_
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ctx->pd_ctl = 1;
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return crypto4xx_build_pd(&req->base, ctx, req->src, req->dst,
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- req->nbytes, req->info,
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- get_dynamic_sa_iv_size(ctx));
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+ req->nbytes, req->info,
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+ crypto_ablkcipher_ivsize(crypto_ablkcipher_reqtfm(req)));
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}
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/**
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@@ -148,15 +148,15 @@ static int crypto4xx_setkey_aes(struct c
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SA_SEQ_MASK_OFF, SA_MC_ENABLE,
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SA_NOT_COPY_PAD, SA_NOT_COPY_PAYLOAD,
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SA_NOT_COPY_HDR);
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- crypto4xx_memcpy_le(ctx->sa_in + get_dynamic_sa_offset_key_field(ctx),
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+ crypto4xx_memcpy_le(get_dynamic_sa_key_field(sa),
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key, keylen);
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sa->sa_contents.w = SA_AES_CONTENTS | (keylen << 2);
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sa->sa_command_1.bf.key_len = keylen >> 3;
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ctx->is_hash = 0;
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ctx->direction = DIR_INBOUND;
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- memcpy(ctx->sa_in + get_dynamic_sa_offset_state_ptr_field(ctx),
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- (void *)&ctx->state_record_dma_addr, 4);
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- ctx->offset_to_sr_ptr = get_dynamic_sa_offset_state_ptr_field(ctx);
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+ memcpy(sa + get_dynamic_sa_offset_state_ptr_field(sa),
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+ (void *)&ctx->state_record_dma_addr, 4);
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+ ctx->offset_to_sr_ptr = get_dynamic_sa_offset_state_ptr_field(sa);
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memcpy(ctx->sa_out, ctx->sa_in, ctx->sa_len * 4);
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sa = (struct dynamic_sa_ctl *) ctx->sa_out;
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@@ -226,7 +226,7 @@ static int crypto4xx_hash_alg_init(struc
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memset(sa_in->inner_digest, 0, sizeof(sa_in->inner_digest));
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memset(sa_in->outer_digest, 0, sizeof(sa_in->outer_digest));
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sa_in->state_ptr = ctx->state_record_dma_addr;
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- ctx->offset_to_sr_ptr = get_dynamic_sa_offset_state_ptr_field(ctx);
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+ ctx->offset_to_sr_ptr = get_dynamic_sa_offset_state_ptr_field(sa);
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return 0;
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}
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--- a/drivers/crypto/amcc/crypto4xx_core.h
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+++ b/drivers/crypto/amcc/crypto4xx_core.h
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@@ -161,9 +161,6 @@ int crypto4xx_alloc_sa(struct crypto4xx_
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void crypto4xx_free_sa(struct crypto4xx_ctx *ctx);
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void crypto4xx_free_ctx(struct crypto4xx_ctx *ctx);
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u32 crypto4xx_alloc_state_record(struct crypto4xx_ctx *ctx);
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-u32 get_dynamic_sa_offset_state_ptr_field(struct crypto4xx_ctx *ctx);
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-u32 get_dynamic_sa_offset_key_field(struct crypto4xx_ctx *ctx);
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-u32 get_dynamic_sa_iv_size(struct crypto4xx_ctx *ctx);
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void crypto4xx_memcpy_le(unsigned int *dst,
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const unsigned char *buf, int len);
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u32 crypto4xx_build_pd(struct crypto_async_request *req,
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--- a/drivers/crypto/amcc/crypto4xx_sa.c
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+++ /dev/null
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@@ -1,85 +0,0 @@
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-/**
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- * AMCC SoC PPC4xx Crypto Driver
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- *
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- * Copyright (c) 2008 Applied Micro Circuits Corporation.
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- * All rights reserved. James Hsiao <jhsiao@amcc.com>
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- *
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- * This program is free software; you can redistribute it and/or modify
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- * it under the terms of the GNU General Public License as published by
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- * the Free Software Foundation; either version 2 of the License, or
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- * (at your option) any later version.
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- *
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- * This program is distributed in the hope that it will be useful,
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- * but WITHOUT ANY WARRANTY; without even the implied warranty of
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- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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- * GNU General Public License for more details.
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- *
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- * @file crypto4xx_sa.c
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- *
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- * This file implements the security context
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- * associate format.
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- */
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-#include <linux/kernel.h>
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-#include <linux/module.h>
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-#include <linux/moduleparam.h>
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-#include <linux/mod_devicetable.h>
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-#include <linux/interrupt.h>
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-#include <linux/spinlock_types.h>
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-#include <linux/highmem.h>
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-#include <linux/scatterlist.h>
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-#include <linux/crypto.h>
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-#include <crypto/algapi.h>
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-#include <crypto/des.h>
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-#include "crypto4xx_reg_def.h"
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-#include "crypto4xx_sa.h"
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-#include "crypto4xx_core.h"
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-
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-u32 get_dynamic_sa_offset_state_ptr_field(struct crypto4xx_ctx *ctx)
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-{
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- u32 offset;
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- union dynamic_sa_contents cts;
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-
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- if (ctx->direction == DIR_INBOUND)
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- cts.w = ((struct dynamic_sa_ctl *) ctx->sa_in)->sa_contents.w;
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- else
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- cts.w = ((struct dynamic_sa_ctl *) ctx->sa_out)->sa_contents.w;
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- offset = cts.bf.key_size
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- + cts.bf.inner_size
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- + cts.bf.outer_size
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- + cts.bf.spi
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- + cts.bf.seq_num0
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- + cts.bf.seq_num1
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- + cts.bf.seq_num_mask0
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- + cts.bf.seq_num_mask1
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- + cts.bf.seq_num_mask2
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- + cts.bf.seq_num_mask3
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- + cts.bf.iv0
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- + cts.bf.iv1
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- + cts.bf.iv2
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- + cts.bf.iv3;
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-
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- return sizeof(struct dynamic_sa_ctl) + offset * 4;
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-}
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-
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-u32 get_dynamic_sa_iv_size(struct crypto4xx_ctx *ctx)
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-{
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- union dynamic_sa_contents cts;
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-
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- if (ctx->direction == DIR_INBOUND)
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- cts.w = ((struct dynamic_sa_ctl *) ctx->sa_in)->sa_contents.w;
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- else
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- cts.w = ((struct dynamic_sa_ctl *) ctx->sa_out)->sa_contents.w;
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- return (cts.bf.iv0 + cts.bf.iv1 + cts.bf.iv2 + cts.bf.iv3) * 4;
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-}
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-
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-u32 get_dynamic_sa_offset_key_field(struct crypto4xx_ctx *ctx)
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-{
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- union dynamic_sa_contents cts;
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-
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- if (ctx->direction == DIR_INBOUND)
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- cts.w = ((struct dynamic_sa_ctl *) ctx->sa_in)->sa_contents.w;
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- else
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- cts.w = ((struct dynamic_sa_ctl *) ctx->sa_out)->sa_contents.w;
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-
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- return sizeof(struct dynamic_sa_ctl);
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-}
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--- a/drivers/crypto/amcc/crypto4xx_sa.h
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+++ b/drivers/crypto/amcc/crypto4xx_sa.h
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@@ -240,4 +240,32 @@ struct dynamic_sa_hash160 {
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#define SA_HASH160_LEN (sizeof(struct dynamic_sa_hash160)/4)
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#define SA_HASH160_CONTENTS 0x2000a502
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+static inline u32
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+get_dynamic_sa_offset_state_ptr_field(struct dynamic_sa_ctl *cts)
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+{
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+ u32 offset;
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+
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+ offset = cts->sa_contents.bf.key_size
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+ + cts->sa_contents.bf.inner_size
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+ + cts->sa_contents.bf.outer_size
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+ + cts->sa_contents.bf.spi
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+ + cts->sa_contents.bf.seq_num0
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+ + cts->sa_contents.bf.seq_num1
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+ + cts->sa_contents.bf.seq_num_mask0
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+ + cts->sa_contents.bf.seq_num_mask1
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+ + cts->sa_contents.bf.seq_num_mask2
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+ + cts->sa_contents.bf.seq_num_mask3
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+ + cts->sa_contents.bf.iv0
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+ + cts->sa_contents.bf.iv1
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+ + cts->sa_contents.bf.iv2
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+ + cts->sa_contents.bf.iv3;
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+
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+ return sizeof(struct dynamic_sa_ctl) + offset * 4;
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+}
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+
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+static inline u8 *get_dynamic_sa_key_field(struct dynamic_sa_ctl *cts)
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+{
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+ return (u8 *) ((unsigned long)cts + sizeof(struct dynamic_sa_ctl));
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+}
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+
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#endif
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