drivers/crypto/geode-aes.h

   1 /* SPDX-License-Identifier: GPL-2.0-or-later */
   2 /* Copyright (C) 2003-2006, Advanced Micro Devices, Inc.
   3  */
   4
   5 #ifndef _GEODE_AES_H_
   6 #define _GEODE_AES_H_
   7
   8 /* driver logic flags */
   9 #define AES_MODE_ECB 0
  10 #define AES_MODE_CBC 1
  11
  12 #define AES_DIR_DECRYPT 0
  13 #define AES_DIR_ENCRYPT 1
  14
  15 #define AES_FLAGS_HIDDENKEY (1 << 0)
  16
  17 /* Register definitions */
  18
  19 #define AES_CTRLA_REG  0x0000
  20
  21 #define AES_CTRL_START     0x01
  22 #define AES_CTRL_DECRYPT   0x00
  23 #define AES_CTRL_ENCRYPT   0x02
  24 #define AES_CTRL_WRKEY     0x04
  25 #define AES_CTRL_DCA       0x08
  26 #define AES_CTRL_SCA       0x10
  27 #define AES_CTRL_CBC       0x20
  28
  29 #define AES_INTR_REG  0x0008
  30
  31 #define AES_INTRA_PENDING (1 << 16)
  32 #define AES_INTRB_PENDING (1 << 17)
  33
  34 #define AES_INTR_PENDING  (AES_INTRA_PENDING | AES_INTRB_PENDING)
  35 #define AES_INTR_MASK     0x07
  36
  37 #define AES_SOURCEA_REG   0x0010
  38 #define AES_DSTA_REG      0x0014
  39 #define AES_LENA_REG      0x0018
  40 #define AES_WRITEKEY0_REG 0x0030
  41 #define AES_WRITEIV0_REG  0x0040
  42
  43 /*  A very large counter that is used to gracefully bail out of an
  44  *  operation in case of trouble
  45  */
  46
  47 #define AES_OP_TIMEOUT    0x50000
  48
  49 struct geode_aes_tfm_ctx {
  50         u8 key[AES_KEYSIZE_128];
  51         union {
  52                 struct crypto_skcipher *skcipher;
  53                 struct crypto_cipher *cip;
  54         } fallback;
  55         u32 keylen;
  56 };
  57
  58 #endif