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
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