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Diffstat (limited to '')
| -rw-r--r-- | drivers/crypto/amcc/crypto4xx_sa.h | 318 |
1 files changed, 318 insertions, 0 deletions
diff --git a/drivers/crypto/amcc/crypto4xx_sa.h b/drivers/crypto/amcc/crypto4xx_sa.h new file mode 100644 index 000000000..a4d403528 --- /dev/null +++ b/drivers/crypto/amcc/crypto4xx_sa.h @@ -0,0 +1,318 @@ +/** + * AMCC SoC PPC4xx Crypto Driver + * + * Copyright (c) 2008 Applied Micro Circuits Corporation. + * All rights reserved. James Hsiao <jhsiao@amcc.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * This file defines the security context + * associate format. + */ + +#ifndef __CRYPTO4XX_SA_H__ +#define __CRYPTO4XX_SA_H__ + +#define AES_IV_SIZE 16 + +/** + * Contents of Dynamic Security Association (SA) with all possible fields + */ +union dynamic_sa_contents { + struct { + u32 arc4_state_ptr:1; + u32 arc4_ij_ptr:1; + u32 state_ptr:1; + u32 iv3:1; + u32 iv2:1; + u32 iv1:1; + u32 iv0:1; + u32 seq_num_mask3:1; + u32 seq_num_mask2:1; + u32 seq_num_mask1:1; + u32 seq_num_mask0:1; + u32 seq_num1:1; + u32 seq_num0:1; + u32 spi:1; + u32 outer_size:5; + u32 inner_size:5; + u32 key_size:4; + u32 cmd_size:4; + } bf; + u32 w; +} __attribute__((packed)); + +#define DIR_OUTBOUND 0 +#define DIR_INBOUND 1 +#define SA_OP_GROUP_BASIC 0 +#define SA_OPCODE_ENCRYPT 0 +#define SA_OPCODE_DECRYPT 0 +#define SA_OPCODE_ENCRYPT_HASH 1 +#define SA_OPCODE_HASH_DECRYPT 1 +#define SA_OPCODE_HASH 3 +#define SA_CIPHER_ALG_DES 0 +#define SA_CIPHER_ALG_3DES 1 +#define SA_CIPHER_ALG_ARC4 2 +#define SA_CIPHER_ALG_AES 3 +#define SA_CIPHER_ALG_KASUMI 4 +#define SA_CIPHER_ALG_NULL 15 + +#define SA_HASH_ALG_MD5 0 +#define SA_HASH_ALG_SHA1 1 +#define SA_HASH_ALG_GHASH 12 +#define SA_HASH_ALG_CBC_MAC 14 +#define SA_HASH_ALG_NULL 15 +#define SA_HASH_ALG_SHA1_DIGEST_SIZE 20 + +#define SA_LOAD_HASH_FROM_SA 0 +#define SA_LOAD_HASH_FROM_STATE 2 +#define SA_NOT_LOAD_HASH 3 +#define SA_LOAD_IV_FROM_SA 0 +#define SA_LOAD_IV_FROM_INPUT 1 +#define SA_LOAD_IV_FROM_STATE 2 +#define SA_LOAD_IV_GEN_IV 3 + +#define SA_PAD_TYPE_CONSTANT 2 +#define SA_PAD_TYPE_ZERO 3 +#define SA_PAD_TYPE_TLS 5 +#define SA_PAD_TYPE_DTLS 5 +#define SA_NOT_SAVE_HASH 0 +#define SA_SAVE_HASH 1 +#define SA_NOT_SAVE_IV 0 +#define SA_SAVE_IV 1 +#define SA_HEADER_PROC 1 +#define SA_NO_HEADER_PROC 0 + +union sa_command_0 { + struct { + u32 scatter:1; + u32 gather:1; + u32 save_hash_state:1; + u32 save_iv:1; + u32 load_hash_state:2; + u32 load_iv:2; + u32 digest_len:4; + u32 hdr_proc:1; + u32 extend_pad:1; + u32 stream_cipher_pad:1; + u32 rsv:1; + u32 hash_alg:4; + u32 cipher_alg:4; + u32 pad_type:2; + u32 op_group:2; + u32 dir:1; + u32 opcode:3; + } bf; + u32 w; +} __attribute__((packed)); + +#define CRYPTO_MODE_ECB 0 +#define CRYPTO_MODE_CBC 1 +#define CRYPTO_MODE_OFB 2 +#define CRYPTO_MODE_CFB 3 +#define CRYPTO_MODE_CTR 4 + +#define CRYPTO_FEEDBACK_MODE_NO_FB 0 +#define CRYPTO_FEEDBACK_MODE_64BIT_OFB 0 +#define CRYPTO_FEEDBACK_MODE_8BIT_CFB 1 +#define CRYPTO_FEEDBACK_MODE_1BIT_CFB 2 +#define CRYPTO_FEEDBACK_MODE_128BIT_CFB 3 + +#define SA_AES_KEY_LEN_128 2 +#define SA_AES_KEY_LEN_192 3 +#define SA_AES_KEY_LEN_256 4 + +#define SA_REV2 1 +/** + * The follow defines bits sa_command_1 + * In Basic hash mode this bit define simple hash or hmac. + * In IPsec mode, this bit define muting control. + */ +#define SA_HASH_MODE_HASH 0 +#define SA_HASH_MODE_HMAC 1 +#define SA_MC_ENABLE 0 +#define SA_MC_DISABLE 1 +#define SA_NOT_COPY_HDR 0 +#define SA_COPY_HDR 1 +#define SA_NOT_COPY_PAD 0 +#define SA_COPY_PAD 1 +#define SA_NOT_COPY_PAYLOAD 0 +#define SA_COPY_PAYLOAD 1 +#define SA_EXTENDED_SN_OFF 0 +#define SA_EXTENDED_SN_ON 1 +#define SA_SEQ_MASK_OFF 0 +#define SA_SEQ_MASK_ON 1 + +union sa_command_1 { + struct { + u32 crypto_mode31:1; + u32 save_arc4_state:1; + u32 arc4_stateful:1; + u32 key_len:5; + u32 hash_crypto_offset:8; + u32 sa_rev:2; + u32 byte_offset:1; + u32 hmac_muting:1; + u32 feedback_mode:2; + u32 crypto_mode9_8:2; + u32 extended_seq_num:1; + u32 seq_num_mask:1; + u32 mutable_bit_proc:1; + u32 ip_version:1; + u32 copy_pad:1; + u32 copy_payload:1; + u32 copy_hdr:1; + u32 rsv1:1; + } bf; + u32 w; +} __attribute__((packed)); + +struct dynamic_sa_ctl { + union dynamic_sa_contents sa_contents; + union sa_command_0 sa_command_0; + union sa_command_1 sa_command_1; +} __attribute__((packed)); + +/** + * State Record for Security Association (SA) + */ +struct sa_state_record { + __le32 save_iv[4]; + __le32 save_hash_byte_cnt[2]; + union { + u32 save_digest[16]; /* for MD5/SHA */ + __le32 save_digest_le32[16]; /* GHASH / CBC */ + }; +} __attribute__((packed)); + +/** + * Security Association (SA) for AES128 + * + */ +struct dynamic_sa_aes128 { + struct dynamic_sa_ctl ctrl; + __le32 key[4]; + __le32 iv[4]; /* for CBC, OFC, and CFB mode */ + u32 state_ptr; + u32 reserved; +} __attribute__((packed)); + +#define SA_AES128_LEN (sizeof(struct dynamic_sa_aes128)/4) +#define SA_AES128_CONTENTS 0x3e000042 + +/* + * Security Association (SA) for AES192 + */ +struct dynamic_sa_aes192 { + struct dynamic_sa_ctl ctrl; + __le32 key[6]; + __le32 iv[4]; /* for CBC, OFC, and CFB mode */ + u32 state_ptr; + u32 reserved; +} __attribute__((packed)); + +#define SA_AES192_LEN (sizeof(struct dynamic_sa_aes192)/4) +#define SA_AES192_CONTENTS 0x3e000062 + +/** + * Security Association (SA) for AES256 + */ +struct dynamic_sa_aes256 { + struct dynamic_sa_ctl ctrl; + __le32 key[8]; + __le32 iv[4]; /* for CBC, OFC, and CFB mode */ + u32 state_ptr; + u32 reserved; +} __attribute__((packed)); + +#define SA_AES256_LEN (sizeof(struct dynamic_sa_aes256)/4) +#define SA_AES256_CONTENTS 0x3e000082 +#define SA_AES_CONTENTS 0x3e000002 + +/** + * Security Association (SA) for AES128 CCM + */ +struct dynamic_sa_aes128_ccm { + struct dynamic_sa_ctl ctrl; + __le32 key[4]; + __le32 iv[4]; + u32 state_ptr; + u32 reserved; +} __packed; +#define SA_AES128_CCM_LEN (sizeof(struct dynamic_sa_aes128_ccm)/4) +#define SA_AES128_CCM_CONTENTS 0x3e000042 +#define SA_AES_CCM_CONTENTS 0x3e000002 + +/** + * Security Association (SA) for AES128_GCM + */ +struct dynamic_sa_aes128_gcm { + struct dynamic_sa_ctl ctrl; + __le32 key[4]; + __le32 inner_digest[4]; + __le32 iv[4]; + u32 state_ptr; + u32 reserved; +} __packed; + +#define SA_AES128_GCM_LEN (sizeof(struct dynamic_sa_aes128_gcm)/4) +#define SA_AES128_GCM_CONTENTS 0x3e000442 +#define SA_AES_GCM_CONTENTS 0x3e000402 + +/** + * Security Association (SA) for HASH160: HMAC-SHA1 + */ +struct dynamic_sa_hash160 { + struct dynamic_sa_ctl ctrl; + __le32 inner_digest[5]; + __le32 outer_digest[5]; + u32 state_ptr; + u32 reserved; +} __attribute__((packed)); +#define SA_HASH160_LEN (sizeof(struct dynamic_sa_hash160)/4) +#define SA_HASH160_CONTENTS 0x2000a502 + +static inline u32 +get_dynamic_sa_offset_state_ptr_field(struct dynamic_sa_ctl *cts) +{ + u32 offset; + + offset = cts->sa_contents.bf.key_size + + cts->sa_contents.bf.inner_size + + cts->sa_contents.bf.outer_size + + cts->sa_contents.bf.spi + + cts->sa_contents.bf.seq_num0 + + cts->sa_contents.bf.seq_num1 + + cts->sa_contents.bf.seq_num_mask0 + + cts->sa_contents.bf.seq_num_mask1 + + cts->sa_contents.bf.seq_num_mask2 + + cts->sa_contents.bf.seq_num_mask3 + + cts->sa_contents.bf.iv0 + + cts->sa_contents.bf.iv1 + + cts->sa_contents.bf.iv2 + + cts->sa_contents.bf.iv3; + + return sizeof(struct dynamic_sa_ctl) + offset * 4; +} + +static inline __le32 *get_dynamic_sa_key_field(struct dynamic_sa_ctl *cts) +{ + return (__le32 *) ((unsigned long)cts + sizeof(struct dynamic_sa_ctl)); +} + +static inline __le32 *get_dynamic_sa_inner_digest(struct dynamic_sa_ctl *cts) +{ + return (__le32 *) ((unsigned long)cts + + sizeof(struct dynamic_sa_ctl) + + cts->sa_contents.bf.key_size * 4); +} + +#endif |