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 57 struct 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