2 * AMCC SoC PPC4xx Crypto Driver
4 * Copyright (c) 2008 Applied Micro Circuits Corporation.
5 * All rights reserved. James Hsiao <jhsiao@amcc.com>
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
17 * @file crypto4xx_sa.c
19 * This file implements the security context
22 #include <linux/kernel.h>
23 #include <linux/module.h>
24 #include <linux/moduleparam.h>
25 #include <linux/mod_devicetable.h>
26 #include <linux/interrupt.h>
27 #include <linux/spinlock_types.h>
28 #include <linux/highmem.h>
29 #include <linux/scatterlist.h>
30 #include <linux/crypto.h>
31 #include <crypto/algapi.h>
32 #include <crypto/des.h>
33 #include "crypto4xx_reg_def.h"
34 #include "crypto4xx_sa.h"
35 #include "crypto4xx_core.h"
37 u32 get_dynamic_sa_offset_state_ptr_field(struct crypto4xx_ctx *ctx)
40 union dynamic_sa_contents cts;
42 if (ctx->direction == DIR_INBOUND)
43 cts.w = ((struct dynamic_sa_ctl *) ctx->sa_in)->sa_contents;
45 cts.w = ((struct dynamic_sa_ctl *) ctx->sa_out)->sa_contents;
46 offset = cts.bf.key_size
52 + cts.bf.seq_num_mask0
53 + cts.bf.seq_num_mask1
54 + cts.bf.seq_num_mask2
55 + cts.bf.seq_num_mask3
61 return sizeof(struct dynamic_sa_ctl) + offset * 4;
64 u32 get_dynamic_sa_iv_size(struct crypto4xx_ctx *ctx)
66 union dynamic_sa_contents cts;
68 if (ctx->direction == DIR_INBOUND)
69 cts.w = ((struct dynamic_sa_ctl *) ctx->sa_in)->sa_contents;
71 cts.w = ((struct dynamic_sa_ctl *) ctx->sa_out)->sa_contents;
72 return (cts.bf.iv0 + cts.bf.iv1 + cts.bf.iv2 + cts.bf.iv3) * 4;
75 u32 get_dynamic_sa_offset_key_field(struct crypto4xx_ctx *ctx)
77 union dynamic_sa_contents cts;
79 if (ctx->direction == DIR_INBOUND)
80 cts.w = ((struct dynamic_sa_ctl *) ctx->sa_in)->sa_contents;
82 cts.w = ((struct dynamic_sa_ctl *) ctx->sa_out)->sa_contents;
84 return sizeof(struct dynamic_sa_ctl);