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/* 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_IV_LENGTH 16
#define AES_KEY_LENGTH 16
#define AES_MIN_BLOCK_SIZE 16
#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_KEY_LENGTH];
u8 *iv;
union {
struct crypto_blkcipher *blk;
struct crypto_cipher *cip;
} fallback;
u32 keylen;
};
#endif
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