| James Hsiao | 049359d | 2009-02-05 16:18:13 +1100 | [diff] [blame] | 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 |
| 20 | * assoicate format. |
| 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 | } |