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_MODE_ECB 0 14 #define AES_MODE_CBC 1 15 16 #define AES_DIR_DECRYPT 0 17 #define AES_DIR_ENCRYPT 1 18 19 #define AES_FLAGS_HIDDENKEY (1 << 0) 20 21 /* Register definitions */ 22 23 #define AES_CTRLA_REG 0x0000 24 25 #define AES_CTRL_START 0x01 26 #define AES_CTRL_DECRYPT 0x00 27 #define AES_CTRL_ENCRYPT 0x02 28 #define AES_CTRL_WRKEY 0x04 29 #define AES_CTRL_DCA 0x08 30 #define AES_CTRL_SCA 0x10 31 #define AES_CTRL_CBC 0x20 32 33 #define AES_INTR_REG 0x0008 34 35 #define AES_INTRA_PENDING (1 << 16) 36 #define AES_INTRB_PENDING (1 << 17) 37 38 #define AES_INTR_PENDING (AES_INTRA_PENDING | AES_INTRB_PENDING) 39 #define AES_INTR_MASK 0x07 40 41 #define AES_SOURCEA_REG 0x0010 42 #define AES_DSTA_REG 0x0014 43 #define AES_LENA_REG 0x0018 44 #define AES_WRITEKEY0_REG 0x0030 45 #define AES_WRITEIV0_REG 0x0040 46 47 /* A very large counter that is used to gracefully bail out of an 48 * operation in case of trouble 49 */ 50 51 #define AES_OP_TIMEOUT 0x50000 52 53 struct geode_aes_tfm_ctx { 54 u8 key[AES_KEYSIZE_128]; 55 union { 56 struct crypto_skcipher *skcipher; 57 struct crypto_cipher *cip; 58 } fallback; 59 u32 keylen; 60 }; 61 62 #endif 63