cptvf_algs.h

  1/* SPDX-License-Identifier: GPL-2.0-only */
  2/*
  3 * Copyright (C) 2016 Cavium, Inc.
  4 */
  5
  6#ifndef _CPTVF_ALGS_H_
  7#define _CPTVF_ALGS_H_
  8
  9#include "request_manager.h"
 10
 11#define MAX_DEVICES 16
 12#define MAJOR_OP_FC 0x33
 13#define MAX_ENC_KEY_SIZE 32
 14#define MAX_HASH_KEY_SIZE 64
 15#define MAX_KEY_SIZE (MAX_ENC_KEY_SIZE + MAX_HASH_KEY_SIZE)
 16#define CONTROL_WORD_LEN 8
 17#define KEY2_OFFSET 48
 18
 19#define DMA_MODE_FLAG(dma_mode) \
 20	(((dma_mode) == DMA_GATHER_SCATTER) ? (1 << 7) : 0)
 21
 22enum req_type {
 23	AE_CORE_REQ,
 24	SE_CORE_REQ,
 25};
 26
 27enum cipher_type {
 28	DES3_CBC = 0x1,
 29	DES3_ECB = 0x2,
 30	AES_CBC = 0x3,
 31	AES_ECB = 0x4,
 32	AES_CFB = 0x5,
 33	AES_CTR = 0x6,
 34	AES_GCM = 0x7,
 35	AES_XTS = 0x8
 36};
 37
 38enum aes_type {
 39	AES_128_BIT = 0x1,
 40	AES_192_BIT = 0x2,
 41	AES_256_BIT = 0x3
 42};
 43
 44union encr_ctrl {
 45	u64 flags;
 46	struct {
 47#if defined(__BIG_ENDIAN_BITFIELD)
 48		u64 enc_cipher:4;
 49		u64 reserved1:1;
 50		u64 aes_key:2;
 51		u64 iv_source:1;
 52		u64 hash_type:4;
 53		u64 reserved2:3;
 54		u64 auth_input_type:1;
 55		u64 mac_len:8;
 56		u64 reserved3:8;
 57		u64 encr_offset:16;
 58		u64 iv_offset:8;
 59		u64 auth_offset:8;
 60#else
 61		u64 auth_offset:8;
 62		u64 iv_offset:8;
 63		u64 encr_offset:16;
 64		u64 reserved3:8;
 65		u64 mac_len:8;
 66		u64 auth_input_type:1;
 67		u64 reserved2:3;
 68		u64 hash_type:4;
 69		u64 iv_source:1;
 70		u64 aes_key:2;
 71		u64 reserved1:1;
 72		u64 enc_cipher:4;
 73#endif
 74	} e;
 75};
 76
 77struct cvm_cipher {
 78	const char *name;
 79	u8 value;
 80};
 81
 82struct enc_context {
 83	union encr_ctrl enc_ctrl;
 84	u8 encr_key[32];
 85	u8 encr_iv[16];
 86};
 87
 88struct fchmac_context {
 89	u8 ipad[64];
 90	u8 opad[64]; /* or OPAD */
 91};
 92
 93struct fc_context {
 94	struct enc_context enc;
 95	struct fchmac_context hmac;
 96};
 97
 98struct cvm_enc_ctx {
 99	u32 key_len;
100	u8 enc_key[MAX_KEY_SIZE];
101	u8 cipher_type:4;
102	u8 key_type:2;
103};
104
105struct cvm_des3_ctx {
106	u32 key_len;
107	u8 des3_key[MAX_KEY_SIZE];
108};
109
110struct cvm_req_ctx {
111	struct cpt_request_info cpt_req;
112	u64 control_word;
113	struct fc_context fctx;
114};
115
116int cptvf_do_request(void *cptvf, struct cpt_request_info *req);
117#endif /*_CPTVF_ALGS_H_*/