319 lines
7.6 KiB
C
319 lines
7.6 KiB
C
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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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* This file defines the security context
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* associate format.
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*/
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#ifndef __CRYPTO4XX_SA_H__
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#define __CRYPTO4XX_SA_H__
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#define AES_IV_SIZE 16
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/**
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* Contents of Dynamic Security Association (SA) with all possible fields
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*/
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union dynamic_sa_contents {
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struct {
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u32 arc4_state_ptr:1;
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u32 arc4_ij_ptr:1;
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u32 state_ptr:1;
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u32 iv3:1;
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u32 iv2:1;
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u32 iv1:1;
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u32 iv0:1;
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u32 seq_num_mask3:1;
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u32 seq_num_mask2:1;
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u32 seq_num_mask1:1;
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u32 seq_num_mask0:1;
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u32 seq_num1:1;
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u32 seq_num0:1;
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u32 spi:1;
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u32 outer_size:5;
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u32 inner_size:5;
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u32 key_size:4;
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u32 cmd_size:4;
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} bf;
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u32 w;
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} __attribute__((packed));
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#define DIR_OUTBOUND 0
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#define DIR_INBOUND 1
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#define SA_OP_GROUP_BASIC 0
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#define SA_OPCODE_ENCRYPT 0
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#define SA_OPCODE_DECRYPT 0
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#define SA_OPCODE_ENCRYPT_HASH 1
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#define SA_OPCODE_HASH_DECRYPT 1
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#define SA_OPCODE_HASH 3
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#define SA_CIPHER_ALG_DES 0
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#define SA_CIPHER_ALG_3DES 1
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#define SA_CIPHER_ALG_ARC4 2
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#define SA_CIPHER_ALG_AES 3
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#define SA_CIPHER_ALG_KASUMI 4
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#define SA_CIPHER_ALG_NULL 15
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#define SA_HASH_ALG_MD5 0
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#define SA_HASH_ALG_SHA1 1
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#define SA_HASH_ALG_GHASH 12
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#define SA_HASH_ALG_CBC_MAC 14
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#define SA_HASH_ALG_NULL 15
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#define SA_HASH_ALG_SHA1_DIGEST_SIZE 20
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#define SA_LOAD_HASH_FROM_SA 0
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#define SA_LOAD_HASH_FROM_STATE 2
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#define SA_NOT_LOAD_HASH 3
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#define SA_LOAD_IV_FROM_SA 0
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#define SA_LOAD_IV_FROM_INPUT 1
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#define SA_LOAD_IV_FROM_STATE 2
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#define SA_LOAD_IV_GEN_IV 3
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#define SA_PAD_TYPE_CONSTANT 2
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#define SA_PAD_TYPE_ZERO 3
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#define SA_PAD_TYPE_TLS 5
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#define SA_PAD_TYPE_DTLS 5
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#define SA_NOT_SAVE_HASH 0
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#define SA_SAVE_HASH 1
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#define SA_NOT_SAVE_IV 0
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#define SA_SAVE_IV 1
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#define SA_HEADER_PROC 1
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#define SA_NO_HEADER_PROC 0
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union sa_command_0 {
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struct {
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u32 scatter:1;
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u32 gather:1;
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u32 save_hash_state:1;
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u32 save_iv:1;
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u32 load_hash_state:2;
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u32 load_iv:2;
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u32 digest_len:4;
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u32 hdr_proc:1;
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u32 extend_pad:1;
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u32 stream_cipher_pad:1;
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u32 rsv:1;
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u32 hash_alg:4;
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u32 cipher_alg:4;
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u32 pad_type:2;
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u32 op_group:2;
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u32 dir:1;
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u32 opcode:3;
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} bf;
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u32 w;
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} __attribute__((packed));
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#define CRYPTO_MODE_ECB 0
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#define CRYPTO_MODE_CBC 1
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#define CRYPTO_MODE_OFB 2
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#define CRYPTO_MODE_CFB 3
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#define CRYPTO_MODE_CTR 4
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#define CRYPTO_FEEDBACK_MODE_NO_FB 0
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#define CRYPTO_FEEDBACK_MODE_64BIT_OFB 0
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#define CRYPTO_FEEDBACK_MODE_8BIT_CFB 1
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#define CRYPTO_FEEDBACK_MODE_1BIT_CFB 2
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#define CRYPTO_FEEDBACK_MODE_128BIT_CFB 3
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#define SA_AES_KEY_LEN_128 2
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#define SA_AES_KEY_LEN_192 3
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#define SA_AES_KEY_LEN_256 4
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#define SA_REV2 1
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/**
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* The follow defines bits sa_command_1
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* In Basic hash mode this bit define simple hash or hmac.
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* In IPsec mode, this bit define muting control.
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*/
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#define SA_HASH_MODE_HASH 0
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#define SA_HASH_MODE_HMAC 1
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#define SA_MC_ENABLE 0
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#define SA_MC_DISABLE 1
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#define SA_NOT_COPY_HDR 0
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#define SA_COPY_HDR 1
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#define SA_NOT_COPY_PAD 0
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#define SA_COPY_PAD 1
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#define SA_NOT_COPY_PAYLOAD 0
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#define SA_COPY_PAYLOAD 1
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#define SA_EXTENDED_SN_OFF 0
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#define SA_EXTENDED_SN_ON 1
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#define SA_SEQ_MASK_OFF 0
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#define SA_SEQ_MASK_ON 1
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union sa_command_1 {
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struct {
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u32 crypto_mode31:1;
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u32 save_arc4_state:1;
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u32 arc4_stateful:1;
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u32 key_len:5;
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u32 hash_crypto_offset:8;
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u32 sa_rev:2;
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u32 byte_offset:1;
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u32 hmac_muting:1;
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u32 feedback_mode:2;
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u32 crypto_mode9_8:2;
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u32 extended_seq_num:1;
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u32 seq_num_mask:1;
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u32 mutable_bit_proc:1;
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u32 ip_version:1;
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u32 copy_pad:1;
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u32 copy_payload:1;
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u32 copy_hdr:1;
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u32 rsv1:1;
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} bf;
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u32 w;
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} __attribute__((packed));
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struct dynamic_sa_ctl {
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union dynamic_sa_contents sa_contents;
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union sa_command_0 sa_command_0;
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union sa_command_1 sa_command_1;
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} __attribute__((packed));
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/**
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* State Record for Security Association (SA)
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*/
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struct sa_state_record {
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__le32 save_iv[4];
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__le32 save_hash_byte_cnt[2];
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union {
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u32 save_digest[16]; /* for MD5/SHA */
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__le32 save_digest_le32[16]; /* GHASH / CBC */
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};
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} __attribute__((packed));
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/**
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* Security Association (SA) for AES128
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*
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*/
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struct dynamic_sa_aes128 {
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struct dynamic_sa_ctl ctrl;
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__le32 key[4];
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__le32 iv[4]; /* for CBC, OFC, and CFB mode */
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u32 state_ptr;
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u32 reserved;
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} __attribute__((packed));
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#define SA_AES128_LEN (sizeof(struct dynamic_sa_aes128)/4)
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#define SA_AES128_CONTENTS 0x3e000042
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/*
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* Security Association (SA) for AES192
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*/
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struct dynamic_sa_aes192 {
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struct dynamic_sa_ctl ctrl;
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__le32 key[6];
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__le32 iv[4]; /* for CBC, OFC, and CFB mode */
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u32 state_ptr;
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u32 reserved;
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} __attribute__((packed));
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#define SA_AES192_LEN (sizeof(struct dynamic_sa_aes192)/4)
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#define SA_AES192_CONTENTS 0x3e000062
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/**
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* Security Association (SA) for AES256
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*/
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struct dynamic_sa_aes256 {
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struct dynamic_sa_ctl ctrl;
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__le32 key[8];
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__le32 iv[4]; /* for CBC, OFC, and CFB mode */
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u32 state_ptr;
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u32 reserved;
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} __attribute__((packed));
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#define SA_AES256_LEN (sizeof(struct dynamic_sa_aes256)/4)
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#define SA_AES256_CONTENTS 0x3e000082
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#define SA_AES_CONTENTS 0x3e000002
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/**
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* Security Association (SA) for AES128 CCM
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*/
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struct dynamic_sa_aes128_ccm {
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struct dynamic_sa_ctl ctrl;
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__le32 key[4];
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__le32 iv[4];
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u32 state_ptr;
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u32 reserved;
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} __packed;
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#define SA_AES128_CCM_LEN (sizeof(struct dynamic_sa_aes128_ccm)/4)
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#define SA_AES128_CCM_CONTENTS 0x3e000042
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#define SA_AES_CCM_CONTENTS 0x3e000002
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/**
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* Security Association (SA) for AES128_GCM
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*/
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struct dynamic_sa_aes128_gcm {
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struct dynamic_sa_ctl ctrl;
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__le32 key[4];
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__le32 inner_digest[4];
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__le32 iv[4];
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u32 state_ptr;
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u32 reserved;
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} __packed;
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#define SA_AES128_GCM_LEN (sizeof(struct dynamic_sa_aes128_gcm)/4)
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#define SA_AES128_GCM_CONTENTS 0x3e000442
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#define SA_AES_GCM_CONTENTS 0x3e000402
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/**
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* Security Association (SA) for HASH160: HMAC-SHA1
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*/
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struct dynamic_sa_hash160 {
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struct dynamic_sa_ctl ctrl;
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__le32 inner_digest[5];
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__le32 outer_digest[5];
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u32 state_ptr;
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u32 reserved;
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} __attribute__((packed));
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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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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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return sizeof(struct dynamic_sa_ctl) + offset * 4;
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}
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static inline __le32 *get_dynamic_sa_key_field(struct dynamic_sa_ctl *cts)
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{
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return (__le32 *) ((unsigned long)cts + sizeof(struct dynamic_sa_ctl));
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}
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static inline __le32 *get_dynamic_sa_inner_digest(struct dynamic_sa_ctl *cts)
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{
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return (__le32 *) ((unsigned long)cts +
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sizeof(struct dynamic_sa_ctl) +
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cts->sa_contents.bf.key_size * 4);
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}
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#endif
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