109 строки
2.9 KiB
C
109 строки
2.9 KiB
C
/**
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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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* assoicate 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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u32 get_dynamic_sa_offset_iv_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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if (ctx->direction == DIR_INBOUND)
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cts.w = ((struct dynamic_sa_ctl *)(ctx->sa_in))->sa_contents;
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else
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cts.w = ((struct dynamic_sa_ctl *)(ctx->sa_out))->sa_contents;
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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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return sizeof(struct dynamic_sa_ctl) + offset * 4;
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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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if (ctx->direction == DIR_INBOUND)
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cts.w = ((struct dynamic_sa_ctl *) ctx->sa_in)->sa_contents;
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else
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cts.w = ((struct dynamic_sa_ctl *) ctx->sa_out)->sa_contents;
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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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return sizeof(struct dynamic_sa_ctl) + offset * 4;
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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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if (ctx->direction == DIR_INBOUND)
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cts.w = ((struct dynamic_sa_ctl *) ctx->sa_in)->sa_contents;
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else
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cts.w = ((struct dynamic_sa_ctl *) ctx->sa_out)->sa_contents;
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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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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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if (ctx->direction == DIR_INBOUND)
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cts.w = ((struct dynamic_sa_ctl *) ctx->sa_in)->sa_contents;
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else
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cts.w = ((struct dynamic_sa_ctl *) ctx->sa_out)->sa_contents;
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return sizeof(struct dynamic_sa_ctl);
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}
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