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/*
* Copyright (C) 2016 Cavium, Inc.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of version 2 of the GNU General Public License
* as published by the Free Software Foundation.
*/
#ifndef _CPTVF_ALGS_H_
#define _CPTVF_ALGS_H_
#include "request_manager.h"
#define MAX_DEVICES 16
#define MAJOR_OP_FC 0x33
#define MAX_ENC_KEY_SIZE 32
#define MAX_HASH_KEY_SIZE 64
#define MAX_KEY_SIZE (MAX_ENC_KEY_SIZE + MAX_HASH_KEY_SIZE)
#define CONTROL_WORD_LEN 8
#define KEY2_OFFSET 48
#define DMA_MODE_FLAG(dma_mode) \
(((dma_mode) == DMA_GATHER_SCATTER) ? (1 << 7) : 0)
enum req_type {
AE_CORE_REQ,
SE_CORE_REQ,
};
enum cipher_type {
DES3_CBC = 0x1,
DES3_ECB = 0x2,
AES_CBC = 0x3,
AES_ECB = 0x4,
AES_CFB = 0x5,
AES_CTR = 0x6,
AES_GCM = 0x7,
AES_XTS = 0x8
};
enum aes_type {
AES_128_BIT = 0x1,
AES_192_BIT = 0x2,
AES_256_BIT = 0x3
};
union encr_ctrl {
u64 flags;
struct {
#if defined(__BIG_ENDIAN_BITFIELD)
u64 enc_cipher:4;
u64 reserved1:1;
u64 aes_key:2;
u64 iv_source:1;
u64 hash_type:4;
u64 reserved2:3;
u64 auth_input_type:1;
u64 mac_len:8;
u64 reserved3:8;
u64 encr_offset:16;
u64 iv_offset:8;
u64 auth_offset:8;
#else
u64 auth_offset:8;
u64 iv_offset:8;
u64 encr_offset:16;
u64 reserved3:8;
u64 mac_len:8;
u64 auth_input_type:1;
u64 reserved2:3;
u64 hash_type:4;
u64 iv_source:1;
u64 aes_key:2;
u64 reserved1:1;
u64 enc_cipher:4;
#endif
} e;
};
struct cvm_cipher {
const char *name;
u8 value;
};
struct enc_context {
union encr_ctrl enc_ctrl;
u8 encr_key[32];
u8 encr_iv[16];
};
struct fchmac_context {
u8 ipad[64];
u8 opad[64]; /* or OPAD */
};
struct fc_context {
struct enc_context enc;
struct fchmac_context hmac;
};
struct cvm_enc_ctx {
u32 key_len;
u8 enc_key[MAX_KEY_SIZE];
u8 cipher_type:4;
u8 key_type:2;
};
struct cvm_des3_ctx {
u32 key_len;
u8 des3_key[MAX_KEY_SIZE];
};
struct cvm_req_ctx {
struct cpt_request_info cpt_req;
u64 control_word;
struct fc_context fctx;
};
int cptvf_do_request(void *cptvf, struct cpt_request_info *req);
#endif /*_CPTVF_ALGS_H_*/
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