1 /* SPDX-License-Identifier: GPL-2.0-or-later */
2 /* Copyright (C) 2003-2006, Advanced Micro Devices, Inc.
3  */
4 
5 #ifndef _GEODE_AES_H_
6 #define _GEODE_AES_H_
7 
8 /* driver logic flags */
9 #define AES_MODE_ECB 0
10 #define AES_MODE_CBC 1
11 
12 #define AES_DIR_DECRYPT 0
13 #define AES_DIR_ENCRYPT 1
14 
15 #define AES_FLAGS_HIDDENKEY (1 << 0)
16 
17 /* Register definitions */
18 
19 #define AES_CTRLA_REG  0x0000
20 
21 #define AES_CTRL_START     0x01
22 #define AES_CTRL_DECRYPT   0x00
23 #define AES_CTRL_ENCRYPT   0x02
24 #define AES_CTRL_WRKEY     0x04
25 #define AES_CTRL_DCA       0x08
26 #define AES_CTRL_SCA       0x10
27 #define AES_CTRL_CBC       0x20
28 
29 #define AES_INTR_REG  0x0008
30 
31 #define AES_INTRA_PENDING (1 << 16)
32 #define AES_INTRB_PENDING (1 << 17)
33 
34 #define AES_INTR_PENDING  (AES_INTRA_PENDING | AES_INTRB_PENDING)
35 #define AES_INTR_MASK     0x07
36 
37 #define AES_SOURCEA_REG   0x0010
38 #define AES_DSTA_REG      0x0014
39 #define AES_LENA_REG      0x0018
40 #define AES_WRITEKEY0_REG 0x0030
41 #define AES_WRITEIV0_REG  0x0040
42 
43 /*  A very large counter that is used to gracefully bail out of an
44  *  operation in case of trouble
45  */
46 
47 #define AES_OP_TIMEOUT    0x50000
48 
49 struct geode_aes_tfm_ctx {
50 	u8 key[AES_KEYSIZE_128];
51 	union {
52 		struct crypto_skcipher *skcipher;
53 		struct crypto_cipher *cip;
54 	} fallback;
55 	u32 keylen;
56 };
57 
58 #endif
59