/* Copyright (C) 2003-2006, Advanced Micro Devices, Inc.
   *
   * This program is free software; you can redistribute it and/or modify
   * it under the terms of the GNU General Public License as published by
   * the Free Software Foundation; either version 2 of the License, or
   * (at your option) any later version.
   */
  
  #ifndef _GEODE_AES_H_
  #define _GEODE_AES_H_

  /* driver logic flags */

  #define AES_MODE_ECB 0
  #define AES_MODE_CBC 1
  
  #define AES_DIR_DECRYPT 0
  #define AES_DIR_ENCRYPT 1

  #define AES_FLAGS_HIDDENKEY (1 << 0)

  /* Register definitions */
  
  #define AES_CTRLA_REG  0x0000
  
  #define AES_CTRL_START     0x01
  #define AES_CTRL_DECRYPT   0x00
  #define AES_CTRL_ENCRYPT   0x02
  #define AES_CTRL_WRKEY     0x04
  #define AES_CTRL_DCA       0x08
  #define AES_CTRL_SCA       0x10
  #define AES_CTRL_CBC       0x20
  
  #define AES_INTR_REG  0x0008
  
  #define AES_INTRA_PENDING (1 << 16)
  #define AES_INTRB_PENDING (1 << 17)
  
  #define AES_INTR_PENDING  (AES_INTRA_PENDING | AES_INTRB_PENDING)
  #define AES_INTR_MASK     0x07
  
  #define AES_SOURCEA_REG   0x0010
  #define AES_DSTA_REG      0x0014
  #define AES_LENA_REG      0x0018
  #define AES_WRITEKEY0_REG 0x0030
  #define AES_WRITEIV0_REG  0x0040
  
  /*  A very large counter that is used to gracefully bail out of an
   *  operation in case of trouble
   */
  
  #define AES_OP_TIMEOUT    0x50000

  struct geode_aes_op {
  
  	void *src;
  	void *dst;
  
  	u32 mode;
  	u32 dir;
  	u32 flags;
  	int len;

  	u8 key[AES_KEYSIZE_128];

  	u8 *iv;

  
  	union {
  		struct crypto_blkcipher *blk;
  		struct crypto_cipher *cip;
  	} fallback;
  	u32 keylen;

  };

  #endif