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
53struct geode_aes_op {
54
55	void *src;
56	void *dst;
57
58	u32 mode;
59	u32 dir;
60	u32 flags;
61	int len;
62
63	u8 key[AES_KEYSIZE_128];
64	u8 *iv;
65
66	union {
67		struct crypto_blkcipher *blk;
68		struct crypto_cipher *cip;
69	} fallback;
70	u32 keylen;
71};
72
73#endif
74