drivers/crypto/cavium/cpt/cptvf_algs.h

   1 /*
   2  * Copyright (C) 2016 Cavium, Inc.
   3  *
   4  * This program is free software; you can redistribute it and/or modify it
   5  * under the terms of version 2 of the GNU General Public License
   6  * as published by the Free Software Foundation.
   7  */
   8
   9 #ifndef _CPTVF_ALGS_H_
  10 #define _CPTVF_ALGS_H_
  11
  12 #include "request_manager.h"
  13
  14 #define MAX_DEVICES 16
  15 #define MAJOR_OP_FC 0x33
  16 #define MAX_ENC_KEY_SIZE 32
  17 #define MAX_HASH_KEY_SIZE 64
  18 #define MAX_KEY_SIZE (MAX_ENC_KEY_SIZE + MAX_HASH_KEY_SIZE)
  19 #define CONTROL_WORD_LEN 8
  20 #define KEY2_OFFSET 48
  21
  22 #define DMA_MODE_FLAG(dma_mode) \
  23         (((dma_mode) == DMA_GATHER_SCATTER) ? (1 << 7) : 0)
  24
  25 enum req_type {
  26         AE_CORE_REQ,
  27         SE_CORE_REQ,
  28 };
  29
  30 enum cipher_type {
  31         DES3_CBC = 0x1,
  32         DES3_ECB = 0x2,
  33         AES_CBC = 0x3,
  34         AES_ECB = 0x4,
  35         AES_CFB = 0x5,
  36         AES_CTR = 0x6,
  37         AES_GCM = 0x7,
  38         AES_XTS = 0x8
  39 };
  40
  41 enum aes_type {
  42         AES_128_BIT = 0x1,
  43         AES_192_BIT = 0x2,
  44         AES_256_BIT = 0x3
  45 };
  46
  47 union encr_ctrl {
  48         u64 flags;
  49         struct {
  50 #if defined(__BIG_ENDIAN_BITFIELD)
  51                 u64 enc_cipher:4;
  52                 u64 reserved1:1;
  53                 u64 aes_key:2;
  54                 u64 iv_source:1;
  55                 u64 hash_type:4;
  56                 u64 reserved2:3;
  57                 u64 auth_input_type:1;
  58                 u64 mac_len:8;
  59                 u64 reserved3:8;
  60                 u64 encr_offset:16;
  61                 u64 iv_offset:8;
  62                 u64 auth_offset:8;
  63 #else
  64                 u64 auth_offset:8;
  65                 u64 iv_offset:8;
  66                 u64 encr_offset:16;
  67                 u64 reserved3:8;
  68                 u64 mac_len:8;
  69                 u64 auth_input_type:1;
  70                 u64 reserved2:3;
  71                 u64 hash_type:4;
  72                 u64 iv_source:1;
  73                 u64 aes_key:2;
  74                 u64 reserved1:1;
  75                 u64 enc_cipher:4;
  76 #endif
  77         } e;
  78 };
  79
  80 struct cvm_cipher {
  81         const char *name;
  82         u8 value;
  83 };
  84
  85 struct enc_context {
  86         union encr_ctrl enc_ctrl;
  87         u8 encr_key[32];
  88         u8 encr_iv[16];
  89 };
  90
  91 struct fchmac_context {
  92         u8 ipad[64];
  93         u8 opad[64]; /* or OPAD */
  94 };
  95
  96 struct fc_context {
  97         struct enc_context enc;
  98         struct fchmac_context hmac;
  99 };
 100
 101 struct cvm_enc_ctx {
 102         u32 key_len;
 103         u8 enc_key[MAX_KEY_SIZE];
 104         u8 cipher_type:4;
 105         u8 key_type:2;
 106 };
 107
 108 struct cvm_des3_ctx {
 109         u32 key_len;
 110         u8 des3_key[MAX_KEY_SIZE];
 111 };
 112
 113 struct cvm_req_ctx {
 114         struct cpt_request_info cpt_req;
 115         u64 control_word;
 116         struct fc_context fctx;
 117 };
 118
 119 int cptvf_do_request(void *cptvf, struct cpt_request_info *req);
 120 #endif /*_CPTVF_ALGS_H_*/