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049359d6 JH |
1 | /** |
2 | * AMCC SoC PPC4xx Crypto Driver | |
3 | * | |
4 | * Copyright (c) 2008 Applied Micro Circuits Corporation. | |
5 | * All rights reserved. James Hsiao <jhsiao@amcc.com> | |
6 | * | |
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. | |
11 | * | |
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. | |
16 | * | |
17 | * @file crypto4xx_sa.c | |
18 | * | |
19 | * This file implements the security context | |
25985edc | 20 | * associate format. |
049359d6 JH |
21 | */ |
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" | |
36 | ||
37 | u32 get_dynamic_sa_offset_iv_field(struct crypto4xx_ctx *ctx) | |
38 | { | |
39 | u32 offset; | |
40 | union dynamic_sa_contents cts; | |
41 | ||
42 | if (ctx->direction == DIR_INBOUND) | |
43 | cts.w = ((struct dynamic_sa_ctl *)(ctx->sa_in))->sa_contents; | |
44 | else | |
45 | cts.w = ((struct dynamic_sa_ctl *)(ctx->sa_out))->sa_contents; | |
46 | offset = cts.bf.key_size | |
47 | + cts.bf.inner_size | |
48 | + cts.bf.outer_size | |
49 | + cts.bf.spi | |
50 | + cts.bf.seq_num0 | |
51 | + cts.bf.seq_num1 | |
52 | + cts.bf.seq_num_mask0 | |
53 | + cts.bf.seq_num_mask1 | |
54 | + cts.bf.seq_num_mask2 | |
55 | + cts.bf.seq_num_mask3; | |
56 | ||
57 | return sizeof(struct dynamic_sa_ctl) + offset * 4; | |
58 | } | |
59 | ||
60 | u32 get_dynamic_sa_offset_state_ptr_field(struct crypto4xx_ctx *ctx) | |
61 | { | |
62 | u32 offset; | |
63 | union dynamic_sa_contents cts; | |
64 | ||
65 | if (ctx->direction == DIR_INBOUND) | |
66 | cts.w = ((struct dynamic_sa_ctl *) ctx->sa_in)->sa_contents; | |
67 | else | |
68 | cts.w = ((struct dynamic_sa_ctl *) ctx->sa_out)->sa_contents; | |
69 | offset = cts.bf.key_size | |
70 | + cts.bf.inner_size | |
71 | + cts.bf.outer_size | |
72 | + cts.bf.spi | |
73 | + cts.bf.seq_num0 | |
74 | + cts.bf.seq_num1 | |
75 | + cts.bf.seq_num_mask0 | |
76 | + cts.bf.seq_num_mask1 | |
77 | + cts.bf.seq_num_mask2 | |
78 | + cts.bf.seq_num_mask3 | |
79 | + cts.bf.iv0 | |
80 | + cts.bf.iv1 | |
81 | + cts.bf.iv2 | |
82 | + cts.bf.iv3; | |
83 | ||
84 | return sizeof(struct dynamic_sa_ctl) + offset * 4; | |
85 | } | |
86 | ||
87 | u32 get_dynamic_sa_iv_size(struct crypto4xx_ctx *ctx) | |
88 | { | |
89 | union dynamic_sa_contents cts; | |
90 | ||
91 | if (ctx->direction == DIR_INBOUND) | |
92 | cts.w = ((struct dynamic_sa_ctl *) ctx->sa_in)->sa_contents; | |
93 | else | |
94 | cts.w = ((struct dynamic_sa_ctl *) ctx->sa_out)->sa_contents; | |
95 | return (cts.bf.iv0 + cts.bf.iv1 + cts.bf.iv2 + cts.bf.iv3) * 4; | |
96 | } | |
97 | ||
98 | u32 get_dynamic_sa_offset_key_field(struct crypto4xx_ctx *ctx) | |
99 | { | |
100 | union dynamic_sa_contents cts; | |
101 | ||
102 | if (ctx->direction == DIR_INBOUND) | |
103 | cts.w = ((struct dynamic_sa_ctl *) ctx->sa_in)->sa_contents; | |
104 | else | |
105 | cts.w = ((struct dynamic_sa_ctl *) ctx->sa_out)->sa_contents; | |
106 | ||
107 | return sizeof(struct dynamic_sa_ctl); | |
108 | } |