drivers/crypto/cavium/cpt/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
  22 enum req_type {
  23         AE_CORE_REQ,
  24         SE_CORE_REQ,
  25 };
  26
  27 enum 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
  38 enum aes_type {
  39         AES_128_BIT = 0x1,
  40         AES_192_BIT = 0x2,
  41         AES_256_BIT = 0x3
  42 };
  43
  44 union 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
  77 struct cvm_cipher {
  78         const char *name;
  79         u8 value;
  80 };
  81
  82 struct enc_context {
  83         union encr_ctrl enc_ctrl;
  84         u8 encr_key[32];
  85         u8 encr_iv[16];
  86 };
  87
  88 struct fchmac_context {
  89         u8 ipad[64];
  90         u8 opad[64]; /* or OPAD */
  91 };
  92
  93 struct fc_context {
  94         struct enc_context enc;
  95         struct fchmac_context hmac;
  96 };
  97
  98 struct 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
 105 struct cvm_des3_ctx {
 106         u32 key_len;
 107         u8 des3_key[MAX_KEY_SIZE];
 108 };
 109
 110 struct cvm_req_ctx {
 111         struct cpt_request_info cpt_req;
 112         u64 control_word;
 113         struct fc_context fctx;
 114 };
 115
 116 int cptvf_do_request(void *cptvf, struct cpt_request_info *req);
 117 #endif /*_CPTVF_ALGS_H_*/