drivers/crypto/amcc/crypto4xx_sa.h - kernel/common - Git at Google

 /**
  * AMCC SoC PPC4xx Crypto Driver
  *
  * Copyright (c) 2008 Applied Micro Circuits Corporation.
  * All rights reserved. James Hsiao <[email protected]>
  *
  * 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
	/**
	* AMCC SoC PPC4xx Crypto Driver
	*
	* Copyright (c) 2008 Applied Micro Circuits Corporation.
	* All rights reserved. James Hsiao <[email protected]>
	*
	* 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