1/* Copyright (C) 2003-2006, Advanced Micro Devices, Inc. 2 * 3 * This program is free software; you can redistribute it and/or modify 4 * it under the terms of the GNU General Public License as published by 5 * the Free Software Foundation; either version 2 of the License, or 6 * (at your option) any later version. 7 */ 8 9#ifndef _GEODE_AES_H_ 10#define _GEODE_AES_H_ 11 12/* driver logic flags */ 13#define AES_IV_LENGTH 16 14#define AES_KEY_LENGTH 16 15#define AES_MIN_BLOCK_SIZE 16 16 17#define AES_MODE_ECB 0 18#define AES_MODE_CBC 1 19 20#define AES_DIR_DECRYPT 0 21#define AES_DIR_ENCRYPT 1 22 23#define AES_FLAGS_HIDDENKEY (1 << 0) 24 25/* Register definitions */ 26 27#define AES_CTRLA_REG 0x0000 28 29#define AES_CTRL_START 0x01 30#define AES_CTRL_DECRYPT 0x00 31#define AES_CTRL_ENCRYPT 0x02 32#define AES_CTRL_WRKEY 0x04 33#define AES_CTRL_DCA 0x08 34#define AES_CTRL_SCA 0x10 35#define AES_CTRL_CBC 0x20 36 37#define AES_INTR_REG 0x0008 38 39#define AES_INTRA_PENDING (1 << 16) 40#define AES_INTRB_PENDING (1 << 17) 41 42#define AES_INTR_PENDING (AES_INTRA_PENDING | AES_INTRB_PENDING) 43#define AES_INTR_MASK 0x07 44 45#define AES_SOURCEA_REG 0x0010 46#define AES_DSTA_REG 0x0014 47#define AES_LENA_REG 0x0018 48#define AES_WRITEKEY0_REG 0x0030 49#define AES_WRITEIV0_REG 0x0040 50 51/* A very large counter that is used to gracefully bail out of an 52 * operation in case of trouble 53 */ 54 55#define AES_OP_TIMEOUT 0x50000 56 57struct geode_aes_op { 58 59 void *src; 60 void *dst; 61 62 u32 mode; 63 u32 dir; 64 u32 flags; 65 int len; 66 67 u8 key[AES_KEY_LENGTH]; 68 u8 *iv; 69 70 union { 71 struct crypto_blkcipher *blk; 72 struct crypto_cipher *cip; 73 } fallback; 74 u32 keylen; 75}; 76 77#endif 78