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14 #include <linux/clk.h>
15 #include <linux/crypto.h>
16 #include <linux/io.h>
17 #include <linux/module.h>
18 #include <linux/of.h>
19 #include <linux/platform_device.h>
20 #include <linux/reset.h>
21 #include <crypto/scatterwalk.h>
22 #include <linux/scatterlist.h>
23 #include <linux/interrupt.h>
24 #include <linux/delay.h>
25 #include <crypto/md5.h>
26 #include <crypto/skcipher.h>
27 #include <crypto/sha.h>
28 #include <crypto/hash.h>
29 #include <crypto/internal/hash.h>
30 #include <crypto/internal/skcipher.h>
31 #include <crypto/aes.h>
32 #include <crypto/internal/des.h>
33 #include <crypto/internal/rng.h>
34 #include <crypto/rng.h>
35
36 #define SS_CTL 0x00
37 #define SS_KEY0 0x04
38 #define SS_KEY1 0x08
39 #define SS_KEY2 0x0C
40 #define SS_KEY3 0x10
41 #define SS_KEY4 0x14
42 #define SS_KEY5 0x18
43 #define SS_KEY6 0x1C
44 #define SS_KEY7 0x20
45
46 #define SS_IV0 0x24
47 #define SS_IV1 0x28
48 #define SS_IV2 0x2C
49 #define SS_IV3 0x30
50
51 #define SS_FCSR 0x44
52
53 #define SS_MD0 0x4C
54 #define SS_MD1 0x50
55 #define SS_MD2 0x54
56 #define SS_MD3 0x58
57 #define SS_MD4 0x5C
58
59 #define SS_RXFIFO 0x200
60 #define SS_TXFIFO 0x204
61
62
63
64
65 #define SS_PRNG_ONESHOT (0 << 15)
66 #define SS_PRNG_CONTINUE (1 << 15)
67
68
69 #define SS_IV_ARBITRARY (1 << 14)
70
71
72 #define SS_ECB (0 << 12)
73 #define SS_CBC (1 << 12)
74 #define SS_CTS (3 << 12)
75
76
77 #define SS_CNT_16BITS (0 << 10)
78 #define SS_CNT_32BITS (1 << 10)
79 #define SS_CNT_64BITS (2 << 10)
80
81
82 #define SS_AES_128BITS (0 << 8)
83 #define SS_AES_192BITS (1 << 8)
84 #define SS_AES_256BITS (2 << 8)
85
86
87 #define SS_ENCRYPTION (0 << 7)
88 #define SS_DECRYPTION (1 << 7)
89
90
91 #define SS_OP_AES (0 << 4)
92 #define SS_OP_DES (1 << 4)
93 #define SS_OP_3DES (2 << 4)
94 #define SS_OP_SHA1 (3 << 4)
95 #define SS_OP_MD5 (4 << 4)
96 #define SS_OP_PRNG (5 << 4)
97
98
99 #define SS_DATA_END (1 << 2)
100
101
102 #define SS_PRNG_START (1 << 1)
103
104
105 #define SS_DISABLED (0 << 0)
106 #define SS_ENABLED (1 << 0)
107
108
109
110 #define SS_RXFIFO_FREE (1 << 30)
111
112
113 #define SS_RXFIFO_SPACES(val) (((val) >> 24) & 0x3f)
114
115
116 #define SS_TXFIFO_AVAILABLE (1 << 22)
117
118
119 #define SS_TXFIFO_SPACES(val) (((val) >> 16) & 0x3f)
120
121 #define SS_RX_MAX 32
122 #define SS_RX_DEFAULT SS_RX_MAX
123 #define SS_TX_MAX 33
124
125 #define SS_RXFIFO_EMP_INT_PENDING (1 << 10)
126 #define SS_TXFIFO_AVA_INT_PENDING (1 << 8)
127 #define SS_RXFIFO_EMP_INT_ENABLE (1 << 2)
128 #define SS_TXFIFO_AVA_INT_ENABLE (1 << 0)
129
130 #define SS_SEED_LEN 192
131 #define SS_DATA_LEN 160
132
133 struct sun4i_ss_ctx {
134 void __iomem *base;
135 int irq;
136 struct clk *busclk;
137 struct clk *ssclk;
138 struct reset_control *reset;
139 struct device *dev;
140 struct resource *res;
141 spinlock_t slock;
142 #ifdef CONFIG_CRYPTO_DEV_SUN4I_SS_PRNG
143 u32 seed[SS_SEED_LEN / BITS_PER_LONG];
144 #endif
145 };
146
147 struct sun4i_ss_alg_template {
148 u32 type;
149 u32 mode;
150 union {
151 struct skcipher_alg crypto;
152 struct ahash_alg hash;
153 struct rng_alg rng;
154 } alg;
155 struct sun4i_ss_ctx *ss;
156 };
157
158 struct sun4i_tfm_ctx {
159 u32 key[AES_MAX_KEY_SIZE / 4];
160 u32 keylen;
161 u32 keymode;
162 struct sun4i_ss_ctx *ss;
163 struct crypto_sync_skcipher *fallback_tfm;
164 };
165
166 struct sun4i_cipher_req_ctx {
167 u32 mode;
168 };
169
170 struct sun4i_req_ctx {
171 u32 mode;
172 u64 byte_count;
173 u32 hash[5];
174 char buf[64];
175 unsigned int len;
176 int flags;
177 };
178
179 int sun4i_hash_crainit(struct crypto_tfm *tfm);
180 int sun4i_hash_init(struct ahash_request *areq);
181 int sun4i_hash_update(struct ahash_request *areq);
182 int sun4i_hash_final(struct ahash_request *areq);
183 int sun4i_hash_finup(struct ahash_request *areq);
184 int sun4i_hash_digest(struct ahash_request *areq);
185 int sun4i_hash_export_md5(struct ahash_request *areq, void *out);
186 int sun4i_hash_import_md5(struct ahash_request *areq, const void *in);
187 int sun4i_hash_export_sha1(struct ahash_request *areq, void *out);
188 int sun4i_hash_import_sha1(struct ahash_request *areq, const void *in);
189
190 int sun4i_ss_cbc_aes_encrypt(struct skcipher_request *areq);
191 int sun4i_ss_cbc_aes_decrypt(struct skcipher_request *areq);
192 int sun4i_ss_ecb_aes_encrypt(struct skcipher_request *areq);
193 int sun4i_ss_ecb_aes_decrypt(struct skcipher_request *areq);
194
195 int sun4i_ss_cbc_des_encrypt(struct skcipher_request *areq);
196 int sun4i_ss_cbc_des_decrypt(struct skcipher_request *areq);
197 int sun4i_ss_ecb_des_encrypt(struct skcipher_request *areq);
198 int sun4i_ss_ecb_des_decrypt(struct skcipher_request *areq);
199
200 int sun4i_ss_cbc_des3_encrypt(struct skcipher_request *areq);
201 int sun4i_ss_cbc_des3_decrypt(struct skcipher_request *areq);
202 int sun4i_ss_ecb_des3_encrypt(struct skcipher_request *areq);
203 int sun4i_ss_ecb_des3_decrypt(struct skcipher_request *areq);
204
205 int sun4i_ss_cipher_init(struct crypto_tfm *tfm);
206 void sun4i_ss_cipher_exit(struct crypto_tfm *tfm);
207 int sun4i_ss_aes_setkey(struct crypto_skcipher *tfm, const u8 *key,
208 unsigned int keylen);
209 int sun4i_ss_des_setkey(struct crypto_skcipher *tfm, const u8 *key,
210 unsigned int keylen);
211 int sun4i_ss_des3_setkey(struct crypto_skcipher *tfm, const u8 *key,
212 unsigned int keylen);
213 int sun4i_ss_prng_generate(struct crypto_rng *tfm, const u8 *src,
214 unsigned int slen, u8 *dst, unsigned int dlen);
215 int sun4i_ss_prng_seed(struct crypto_rng *tfm, const u8 *seed, unsigned int slen);