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_*/
118

source code of linux/drivers/crypto/cavium/cpt/cptvf_algs.h