LXR linux/drivers/crypto/cavium/cpt/cptvf

   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
  25enum req_type {
  26        AE_CORE_REQ,
  27        SE_CORE_REQ,
  28};
  29
  30enum 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
  41enum aes_type {
  42        AES_128_BIT = 0x1,
  43        AES_192_BIT = 0x2,
  44        AES_256_BIT = 0x3
  45};
  46
  47union 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
  80struct cvm_cipher {
  81        const char *name;
  82        u8 value;
  83};
  84
  85struct enc_context {
  86        union encr_ctrl enc_ctrl;
  87        u8 encr_key[32];
  88        u8 encr_iv[16];
  89};
  90
  91struct fchmac_context {
  92        u8 ipad[64];
  93        u8 opad[64]; /* or OPAD */
  94};
  95
  96struct fc_context {
  97        struct enc_context enc;
  98        struct fchmac_context hmac;
  99};
 100
 101struct 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
 108struct cvm_des3_ctx {
 109        u32 key_len;
 110        u8 des3_key[MAX_KEY_SIZE];
 111};
 112
 113struct cvm_req_ctx {
 114        struct cpt_request_info cpt_req;
 115        u64 control_word;
 116        struct fc_context fctx;
 117};
 118
 119int cptvf_do_request(void *cptvf, struct cpt_request_info *req);
 120#endif /*_CPTVF_ALGS_H_*/
 121