1 // SPDX-License-Identifier: GPL-2.0-only 1 // SPDX-License-Identifier: GPL-2.0-only
2 /* Glue code for AES encryption optimized for 2 /* Glue code for AES encryption optimized for sparc64 crypto opcodes.
3 * 3 *
4 * This is based largely upon arch/x86/crypto/ 4 * This is based largely upon arch/x86/crypto/aesni-intel_glue.c
5 * 5 *
6 * Copyright (C) 2008, Intel Corp. 6 * Copyright (C) 2008, Intel Corp.
7 * Author: Huang Ying <ying.huang@intel.com 7 * Author: Huang Ying <ying.huang@intel.com>
8 * 8 *
9 * Added RFC4106 AES-GCM support for 128-bit k 9 * Added RFC4106 AES-GCM support for 128-bit keys under the AEAD
10 * interface for 64-bit kernels. 10 * interface for 64-bit kernels.
11 * Authors: Adrian Hoban <adrian.hoban@inte 11 * Authors: Adrian Hoban <adrian.hoban@intel.com>
12 * Gabriele Paoloni <gabriele.paol 12 * Gabriele Paoloni <gabriele.paoloni@intel.com>
13 * Tadeusz Struk (tadeusz.struk@in 13 * Tadeusz Struk (tadeusz.struk@intel.com)
14 * Aidan O'Mahony (aidan.o.mahony@ 14 * Aidan O'Mahony (aidan.o.mahony@intel.com)
15 * Copyright (c) 2010, Intel Corporation. 15 * Copyright (c) 2010, Intel Corporation.
16 */ 16 */
17 17
18 #define pr_fmt(fmt) KBUILD_MODNAME ": " fm 18 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
19 19
20 #include <linux/crypto.h> 20 #include <linux/crypto.h>
21 #include <linux/init.h> 21 #include <linux/init.h>
22 #include <linux/module.h> 22 #include <linux/module.h>
23 #include <linux/mm.h> 23 #include <linux/mm.h>
24 #include <linux/types.h> 24 #include <linux/types.h>
25 #include <crypto/algapi.h> 25 #include <crypto/algapi.h>
26 #include <crypto/aes.h> 26 #include <crypto/aes.h>
27 #include <crypto/internal/skcipher.h> 27 #include <crypto/internal/skcipher.h>
28 28
29 #include <asm/fpumacro.h> 29 #include <asm/fpumacro.h>
30 #include <asm/pstate.h> 30 #include <asm/pstate.h>
31 #include <asm/elf.h> 31 #include <asm/elf.h>
32 32
33 #include "opcodes.h" 33 #include "opcodes.h"
34 34
35 struct aes_ops { 35 struct aes_ops {
36 void (*encrypt)(const u64 *key, const 36 void (*encrypt)(const u64 *key, const u32 *input, u32 *output);
37 void (*decrypt)(const u64 *key, const 37 void (*decrypt)(const u64 *key, const u32 *input, u32 *output);
38 void (*load_encrypt_keys)(const u64 *k 38 void (*load_encrypt_keys)(const u64 *key);
39 void (*load_decrypt_keys)(const u64 *k 39 void (*load_decrypt_keys)(const u64 *key);
40 void (*ecb_encrypt)(const u64 *key, co 40 void (*ecb_encrypt)(const u64 *key, const u64 *input, u64 *output,
41 unsigned int len); 41 unsigned int len);
42 void (*ecb_decrypt)(const u64 *key, co 42 void (*ecb_decrypt)(const u64 *key, const u64 *input, u64 *output,
43 unsigned int len); 43 unsigned int len);
44 void (*cbc_encrypt)(const u64 *key, co 44 void (*cbc_encrypt)(const u64 *key, const u64 *input, u64 *output,
45 unsigned int len, 45 unsigned int len, u64 *iv);
46 void (*cbc_decrypt)(const u64 *key, co 46 void (*cbc_decrypt)(const u64 *key, const u64 *input, u64 *output,
47 unsigned int len, 47 unsigned int len, u64 *iv);
48 void (*ctr_crypt)(const u64 *key, cons 48 void (*ctr_crypt)(const u64 *key, const u64 *input, u64 *output,
49 unsigned int len, u6 49 unsigned int len, u64 *iv);
50 }; 50 };
51 51
52 struct crypto_sparc64_aes_ctx { 52 struct crypto_sparc64_aes_ctx {
53 struct aes_ops *ops; 53 struct aes_ops *ops;
54 u64 key[AES_MAX_KEYLENGTH / sizeof(u64 54 u64 key[AES_MAX_KEYLENGTH / sizeof(u64)];
55 u32 key_length; 55 u32 key_length;
56 u32 expanded_key_length; 56 u32 expanded_key_length;
57 }; 57 };
58 58
59 extern void aes_sparc64_encrypt_128(const u64 59 extern void aes_sparc64_encrypt_128(const u64 *key, const u32 *input,
60 u32 *outpu 60 u32 *output);
61 extern void aes_sparc64_encrypt_192(const u64 61 extern void aes_sparc64_encrypt_192(const u64 *key, const u32 *input,
62 u32 *outpu 62 u32 *output);
63 extern void aes_sparc64_encrypt_256(const u64 63 extern void aes_sparc64_encrypt_256(const u64 *key, const u32 *input,
64 u32 *outpu 64 u32 *output);
65 65
66 extern void aes_sparc64_decrypt_128(const u64 66 extern void aes_sparc64_decrypt_128(const u64 *key, const u32 *input,
67 u32 *outpu 67 u32 *output);
68 extern void aes_sparc64_decrypt_192(const u64 68 extern void aes_sparc64_decrypt_192(const u64 *key, const u32 *input,
69 u32 *outpu 69 u32 *output);
70 extern void aes_sparc64_decrypt_256(const u64 70 extern void aes_sparc64_decrypt_256(const u64 *key, const u32 *input,
71 u32 *outpu 71 u32 *output);
72 72
73 extern void aes_sparc64_load_encrypt_keys_128( 73 extern void aes_sparc64_load_encrypt_keys_128(const u64 *key);
74 extern void aes_sparc64_load_encrypt_keys_192( 74 extern void aes_sparc64_load_encrypt_keys_192(const u64 *key);
75 extern void aes_sparc64_load_encrypt_keys_256( 75 extern void aes_sparc64_load_encrypt_keys_256(const u64 *key);
76 76
77 extern void aes_sparc64_load_decrypt_keys_128( 77 extern void aes_sparc64_load_decrypt_keys_128(const u64 *key);
78 extern void aes_sparc64_load_decrypt_keys_192( 78 extern void aes_sparc64_load_decrypt_keys_192(const u64 *key);
79 extern void aes_sparc64_load_decrypt_keys_256( 79 extern void aes_sparc64_load_decrypt_keys_256(const u64 *key);
80 80
81 extern void aes_sparc64_ecb_encrypt_128(const 81 extern void aes_sparc64_ecb_encrypt_128(const u64 *key, const u64 *input,
82 u64 *o 82 u64 *output, unsigned int len);
83 extern void aes_sparc64_ecb_encrypt_192(const 83 extern void aes_sparc64_ecb_encrypt_192(const u64 *key, const u64 *input,
84 u64 *o 84 u64 *output, unsigned int len);
85 extern void aes_sparc64_ecb_encrypt_256(const 85 extern void aes_sparc64_ecb_encrypt_256(const u64 *key, const u64 *input,
86 u64 *o 86 u64 *output, unsigned int len);
87 87
88 extern void aes_sparc64_ecb_decrypt_128(const 88 extern void aes_sparc64_ecb_decrypt_128(const u64 *key, const u64 *input,
89 u64 *o 89 u64 *output, unsigned int len);
90 extern void aes_sparc64_ecb_decrypt_192(const 90 extern void aes_sparc64_ecb_decrypt_192(const u64 *key, const u64 *input,
91 u64 *o 91 u64 *output, unsigned int len);
92 extern void aes_sparc64_ecb_decrypt_256(const 92 extern void aes_sparc64_ecb_decrypt_256(const u64 *key, const u64 *input,
93 u64 *o 93 u64 *output, unsigned int len);
94 94
95 extern void aes_sparc64_cbc_encrypt_128(const 95 extern void aes_sparc64_cbc_encrypt_128(const u64 *key, const u64 *input,
96 u64 *o 96 u64 *output, unsigned int len,
97 u64 *i 97 u64 *iv);
98 98
99 extern void aes_sparc64_cbc_encrypt_192(const 99 extern void aes_sparc64_cbc_encrypt_192(const u64 *key, const u64 *input,
100 u64 *o 100 u64 *output, unsigned int len,
101 u64 *i 101 u64 *iv);
102 102
103 extern void aes_sparc64_cbc_encrypt_256(const 103 extern void aes_sparc64_cbc_encrypt_256(const u64 *key, const u64 *input,
104 u64 *o 104 u64 *output, unsigned int len,
105 u64 *i 105 u64 *iv);
106 106
107 extern void aes_sparc64_cbc_decrypt_128(const 107 extern void aes_sparc64_cbc_decrypt_128(const u64 *key, const u64 *input,
108 u64 *o 108 u64 *output, unsigned int len,
109 u64 *i 109 u64 *iv);
110 110
111 extern void aes_sparc64_cbc_decrypt_192(const 111 extern void aes_sparc64_cbc_decrypt_192(const u64 *key, const u64 *input,
112 u64 *o 112 u64 *output, unsigned int len,
113 u64 *i 113 u64 *iv);
114 114
115 extern void aes_sparc64_cbc_decrypt_256(const 115 extern void aes_sparc64_cbc_decrypt_256(const u64 *key, const u64 *input,
116 u64 *o 116 u64 *output, unsigned int len,
117 u64 *i 117 u64 *iv);
118 118
119 extern void aes_sparc64_ctr_crypt_128(const u6 119 extern void aes_sparc64_ctr_crypt_128(const u64 *key, const u64 *input,
120 u64 *out 120 u64 *output, unsigned int len,
121 u64 *iv) 121 u64 *iv);
122 extern void aes_sparc64_ctr_crypt_192(const u6 122 extern void aes_sparc64_ctr_crypt_192(const u64 *key, const u64 *input,
123 u64 *out 123 u64 *output, unsigned int len,
124 u64 *iv) 124 u64 *iv);
125 extern void aes_sparc64_ctr_crypt_256(const u6 125 extern void aes_sparc64_ctr_crypt_256(const u64 *key, const u64 *input,
126 u64 *out 126 u64 *output, unsigned int len,
127 u64 *iv) 127 u64 *iv);
128 128
129 static struct aes_ops aes128_ops = { 129 static struct aes_ops aes128_ops = {
130 .encrypt = aes_sparc64_ 130 .encrypt = aes_sparc64_encrypt_128,
131 .decrypt = aes_sparc64_ 131 .decrypt = aes_sparc64_decrypt_128,
132 .load_encrypt_keys = aes_sparc64_ 132 .load_encrypt_keys = aes_sparc64_load_encrypt_keys_128,
133 .load_decrypt_keys = aes_sparc64_ 133 .load_decrypt_keys = aes_sparc64_load_decrypt_keys_128,
134 .ecb_encrypt = aes_sparc64_ 134 .ecb_encrypt = aes_sparc64_ecb_encrypt_128,
135 .ecb_decrypt = aes_sparc64_ 135 .ecb_decrypt = aes_sparc64_ecb_decrypt_128,
136 .cbc_encrypt = aes_sparc64_ 136 .cbc_encrypt = aes_sparc64_cbc_encrypt_128,
137 .cbc_decrypt = aes_sparc64_ 137 .cbc_decrypt = aes_sparc64_cbc_decrypt_128,
138 .ctr_crypt = aes_sparc64_ 138 .ctr_crypt = aes_sparc64_ctr_crypt_128,
139 }; 139 };
140 140
141 static struct aes_ops aes192_ops = { 141 static struct aes_ops aes192_ops = {
142 .encrypt = aes_sparc64_ 142 .encrypt = aes_sparc64_encrypt_192,
143 .decrypt = aes_sparc64_ 143 .decrypt = aes_sparc64_decrypt_192,
144 .load_encrypt_keys = aes_sparc64_ 144 .load_encrypt_keys = aes_sparc64_load_encrypt_keys_192,
145 .load_decrypt_keys = aes_sparc64_ 145 .load_decrypt_keys = aes_sparc64_load_decrypt_keys_192,
146 .ecb_encrypt = aes_sparc64_ 146 .ecb_encrypt = aes_sparc64_ecb_encrypt_192,
147 .ecb_decrypt = aes_sparc64_ 147 .ecb_decrypt = aes_sparc64_ecb_decrypt_192,
148 .cbc_encrypt = aes_sparc64_ 148 .cbc_encrypt = aes_sparc64_cbc_encrypt_192,
149 .cbc_decrypt = aes_sparc64_ 149 .cbc_decrypt = aes_sparc64_cbc_decrypt_192,
150 .ctr_crypt = aes_sparc64_ 150 .ctr_crypt = aes_sparc64_ctr_crypt_192,
151 }; 151 };
152 152
153 static struct aes_ops aes256_ops = { 153 static struct aes_ops aes256_ops = {
154 .encrypt = aes_sparc64_ 154 .encrypt = aes_sparc64_encrypt_256,
155 .decrypt = aes_sparc64_ 155 .decrypt = aes_sparc64_decrypt_256,
156 .load_encrypt_keys = aes_sparc64_ 156 .load_encrypt_keys = aes_sparc64_load_encrypt_keys_256,
157 .load_decrypt_keys = aes_sparc64_ 157 .load_decrypt_keys = aes_sparc64_load_decrypt_keys_256,
158 .ecb_encrypt = aes_sparc64_ 158 .ecb_encrypt = aes_sparc64_ecb_encrypt_256,
159 .ecb_decrypt = aes_sparc64_ 159 .ecb_decrypt = aes_sparc64_ecb_decrypt_256,
160 .cbc_encrypt = aes_sparc64_ 160 .cbc_encrypt = aes_sparc64_cbc_encrypt_256,
161 .cbc_decrypt = aes_sparc64_ 161 .cbc_decrypt = aes_sparc64_cbc_decrypt_256,
162 .ctr_crypt = aes_sparc64_ 162 .ctr_crypt = aes_sparc64_ctr_crypt_256,
163 }; 163 };
164 164
165 extern void aes_sparc64_key_expand(const u32 * 165 extern void aes_sparc64_key_expand(const u32 *in_key, u64 *output_key,
166 unsigned in 166 unsigned int key_len);
167 167
168 static int aes_set_key(struct crypto_tfm *tfm, 168 static int aes_set_key(struct crypto_tfm *tfm, const u8 *in_key,
169 unsigned int key_len) 169 unsigned int key_len)
170 { 170 {
171 struct crypto_sparc64_aes_ctx *ctx = c 171 struct crypto_sparc64_aes_ctx *ctx = crypto_tfm_ctx(tfm);
172 172
173 switch (key_len) { 173 switch (key_len) {
174 case AES_KEYSIZE_128: 174 case AES_KEYSIZE_128:
175 ctx->expanded_key_length = 0xb 175 ctx->expanded_key_length = 0xb0;
176 ctx->ops = &aes128_ops; 176 ctx->ops = &aes128_ops;
177 break; 177 break;
178 178
179 case AES_KEYSIZE_192: 179 case AES_KEYSIZE_192:
180 ctx->expanded_key_length = 0xd 180 ctx->expanded_key_length = 0xd0;
181 ctx->ops = &aes192_ops; 181 ctx->ops = &aes192_ops;
182 break; 182 break;
183 183
184 case AES_KEYSIZE_256: 184 case AES_KEYSIZE_256:
185 ctx->expanded_key_length = 0xf 185 ctx->expanded_key_length = 0xf0;
186 ctx->ops = &aes256_ops; 186 ctx->ops = &aes256_ops;
187 break; 187 break;
188 188
189 default: 189 default:
190 return -EINVAL; 190 return -EINVAL;
191 } 191 }
192 192
193 aes_sparc64_key_expand((const u32 *)in 193 aes_sparc64_key_expand((const u32 *)in_key, &ctx->key[0], key_len);
194 ctx->key_length = key_len; 194 ctx->key_length = key_len;
195 195
196 return 0; 196 return 0;
197 } 197 }
198 198
199 static int aes_set_key_skcipher(struct crypto_ 199 static int aes_set_key_skcipher(struct crypto_skcipher *tfm, const u8 *in_key,
200 unsigned int k 200 unsigned int key_len)
201 { 201 {
202 return aes_set_key(crypto_skcipher_tfm 202 return aes_set_key(crypto_skcipher_tfm(tfm), in_key, key_len);
203 } 203 }
204 204
205 static void crypto_aes_encrypt(struct crypto_t 205 static void crypto_aes_encrypt(struct crypto_tfm *tfm, u8 *dst, const u8 *src)
206 { 206 {
207 struct crypto_sparc64_aes_ctx *ctx = c 207 struct crypto_sparc64_aes_ctx *ctx = crypto_tfm_ctx(tfm);
208 208
209 ctx->ops->encrypt(&ctx->key[0], (const 209 ctx->ops->encrypt(&ctx->key[0], (const u32 *) src, (u32 *) dst);
210 } 210 }
211 211
212 static void crypto_aes_decrypt(struct crypto_t 212 static void crypto_aes_decrypt(struct crypto_tfm *tfm, u8 *dst, const u8 *src)
213 { 213 {
214 struct crypto_sparc64_aes_ctx *ctx = c 214 struct crypto_sparc64_aes_ctx *ctx = crypto_tfm_ctx(tfm);
215 215
216 ctx->ops->decrypt(&ctx->key[0], (const 216 ctx->ops->decrypt(&ctx->key[0], (const u32 *) src, (u32 *) dst);
217 } 217 }
218 218
219 static int ecb_encrypt(struct skcipher_request 219 static int ecb_encrypt(struct skcipher_request *req)
220 { 220 {
221 struct crypto_skcipher *tfm = crypto_s 221 struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req);
222 const struct crypto_sparc64_aes_ctx *c 222 const struct crypto_sparc64_aes_ctx *ctx = crypto_skcipher_ctx(tfm);
223 struct skcipher_walk walk; 223 struct skcipher_walk walk;
224 unsigned int nbytes; 224 unsigned int nbytes;
225 int err; 225 int err;
226 226
227 err = skcipher_walk_virt(&walk, req, t 227 err = skcipher_walk_virt(&walk, req, true);
228 if (err) 228 if (err)
229 return err; 229 return err;
230 230
231 ctx->ops->load_encrypt_keys(&ctx->key[ 231 ctx->ops->load_encrypt_keys(&ctx->key[0]);
232 while ((nbytes = walk.nbytes) != 0) { 232 while ((nbytes = walk.nbytes) != 0) {
233 ctx->ops->ecb_encrypt(&ctx->ke 233 ctx->ops->ecb_encrypt(&ctx->key[0], walk.src.virt.addr,
234 walk.dst 234 walk.dst.virt.addr,
235 round_do 235 round_down(nbytes, AES_BLOCK_SIZE));
236 err = skcipher_walk_done(&walk 236 err = skcipher_walk_done(&walk, nbytes % AES_BLOCK_SIZE);
237 } 237 }
238 fprs_write(0); 238 fprs_write(0);
239 return err; 239 return err;
240 } 240 }
241 241
242 static int ecb_decrypt(struct skcipher_request 242 static int ecb_decrypt(struct skcipher_request *req)
243 { 243 {
244 struct crypto_skcipher *tfm = crypto_s 244 struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req);
245 const struct crypto_sparc64_aes_ctx *c 245 const struct crypto_sparc64_aes_ctx *ctx = crypto_skcipher_ctx(tfm);
246 const u64 *key_end; 246 const u64 *key_end;
247 struct skcipher_walk walk; 247 struct skcipher_walk walk;
248 unsigned int nbytes; 248 unsigned int nbytes;
249 int err; 249 int err;
250 250
251 err = skcipher_walk_virt(&walk, req, t 251 err = skcipher_walk_virt(&walk, req, true);
252 if (err) 252 if (err)
253 return err; 253 return err;
254 254
255 ctx->ops->load_decrypt_keys(&ctx->key[ 255 ctx->ops->load_decrypt_keys(&ctx->key[0]);
256 key_end = &ctx->key[ctx->expanded_key_ 256 key_end = &ctx->key[ctx->expanded_key_length / sizeof(u64)];
257 while ((nbytes = walk.nbytes) != 0) { 257 while ((nbytes = walk.nbytes) != 0) {
258 ctx->ops->ecb_decrypt(key_end, 258 ctx->ops->ecb_decrypt(key_end, walk.src.virt.addr,
259 walk.dst 259 walk.dst.virt.addr,
260 round_do 260 round_down(nbytes, AES_BLOCK_SIZE));
261 err = skcipher_walk_done(&walk 261 err = skcipher_walk_done(&walk, nbytes % AES_BLOCK_SIZE);
262 } 262 }
263 fprs_write(0); 263 fprs_write(0);
264 264
265 return err; 265 return err;
266 } 266 }
267 267
268 static int cbc_encrypt(struct skcipher_request 268 static int cbc_encrypt(struct skcipher_request *req)
269 { 269 {
270 struct crypto_skcipher *tfm = crypto_s 270 struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req);
271 const struct crypto_sparc64_aes_ctx *c 271 const struct crypto_sparc64_aes_ctx *ctx = crypto_skcipher_ctx(tfm);
272 struct skcipher_walk walk; 272 struct skcipher_walk walk;
273 unsigned int nbytes; 273 unsigned int nbytes;
274 int err; 274 int err;
275 275
276 err = skcipher_walk_virt(&walk, req, t 276 err = skcipher_walk_virt(&walk, req, true);
277 if (err) 277 if (err)
278 return err; 278 return err;
279 279
280 ctx->ops->load_encrypt_keys(&ctx->key[ 280 ctx->ops->load_encrypt_keys(&ctx->key[0]);
281 while ((nbytes = walk.nbytes) != 0) { 281 while ((nbytes = walk.nbytes) != 0) {
282 ctx->ops->cbc_encrypt(&ctx->ke 282 ctx->ops->cbc_encrypt(&ctx->key[0], walk.src.virt.addr,
283 walk.dst 283 walk.dst.virt.addr,
284 round_do 284 round_down(nbytes, AES_BLOCK_SIZE),
285 walk.iv) 285 walk.iv);
286 err = skcipher_walk_done(&walk 286 err = skcipher_walk_done(&walk, nbytes % AES_BLOCK_SIZE);
287 } 287 }
288 fprs_write(0); 288 fprs_write(0);
289 return err; 289 return err;
290 } 290 }
291 291
292 static int cbc_decrypt(struct skcipher_request 292 static int cbc_decrypt(struct skcipher_request *req)
293 { 293 {
294 struct crypto_skcipher *tfm = crypto_s 294 struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req);
295 const struct crypto_sparc64_aes_ctx *c 295 const struct crypto_sparc64_aes_ctx *ctx = crypto_skcipher_ctx(tfm);
296 const u64 *key_end; 296 const u64 *key_end;
297 struct skcipher_walk walk; 297 struct skcipher_walk walk;
298 unsigned int nbytes; 298 unsigned int nbytes;
299 int err; 299 int err;
300 300
301 err = skcipher_walk_virt(&walk, req, t 301 err = skcipher_walk_virt(&walk, req, true);
302 if (err) 302 if (err)
303 return err; 303 return err;
304 304
305 ctx->ops->load_decrypt_keys(&ctx->key[ 305 ctx->ops->load_decrypt_keys(&ctx->key[0]);
306 key_end = &ctx->key[ctx->expanded_key_ 306 key_end = &ctx->key[ctx->expanded_key_length / sizeof(u64)];
307 while ((nbytes = walk.nbytes) != 0) { 307 while ((nbytes = walk.nbytes) != 0) {
308 ctx->ops->cbc_decrypt(key_end, 308 ctx->ops->cbc_decrypt(key_end, walk.src.virt.addr,
309 walk.dst 309 walk.dst.virt.addr,
310 round_do 310 round_down(nbytes, AES_BLOCK_SIZE),
311 walk.iv) 311 walk.iv);
312 err = skcipher_walk_done(&walk 312 err = skcipher_walk_done(&walk, nbytes % AES_BLOCK_SIZE);
313 } 313 }
314 fprs_write(0); 314 fprs_write(0);
315 315
316 return err; 316 return err;
317 } 317 }
318 318
319 static void ctr_crypt_final(const struct crypt 319 static void ctr_crypt_final(const struct crypto_sparc64_aes_ctx *ctx,
320 struct skcipher_wa 320 struct skcipher_walk *walk)
321 { 321 {
322 u8 *ctrblk = walk->iv; 322 u8 *ctrblk = walk->iv;
323 u64 keystream[AES_BLOCK_SIZE / sizeof( 323 u64 keystream[AES_BLOCK_SIZE / sizeof(u64)];
324 u8 *src = walk->src.virt.addr; 324 u8 *src = walk->src.virt.addr;
325 u8 *dst = walk->dst.virt.addr; 325 u8 *dst = walk->dst.virt.addr;
326 unsigned int nbytes = walk->nbytes; 326 unsigned int nbytes = walk->nbytes;
327 327
328 ctx->ops->ecb_encrypt(&ctx->key[0], (c 328 ctx->ops->ecb_encrypt(&ctx->key[0], (const u64 *)ctrblk,
329 keystream, AES_B 329 keystream, AES_BLOCK_SIZE);
330 crypto_xor_cpy(dst, (u8 *) keystream, 330 crypto_xor_cpy(dst, (u8 *) keystream, src, nbytes);
331 crypto_inc(ctrblk, AES_BLOCK_SIZE); 331 crypto_inc(ctrblk, AES_BLOCK_SIZE);
332 } 332 }
333 333
334 static int ctr_crypt(struct skcipher_request * 334 static int ctr_crypt(struct skcipher_request *req)
335 { 335 {
336 struct crypto_skcipher *tfm = crypto_s 336 struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req);
337 const struct crypto_sparc64_aes_ctx *c 337 const struct crypto_sparc64_aes_ctx *ctx = crypto_skcipher_ctx(tfm);
338 struct skcipher_walk walk; 338 struct skcipher_walk walk;
339 unsigned int nbytes; 339 unsigned int nbytes;
340 int err; 340 int err;
341 341
342 err = skcipher_walk_virt(&walk, req, t 342 err = skcipher_walk_virt(&walk, req, true);
343 if (err) 343 if (err)
344 return err; 344 return err;
345 345
346 ctx->ops->load_encrypt_keys(&ctx->key[ 346 ctx->ops->load_encrypt_keys(&ctx->key[0]);
347 while ((nbytes = walk.nbytes) >= AES_B 347 while ((nbytes = walk.nbytes) >= AES_BLOCK_SIZE) {
348 ctx->ops->ctr_crypt(&ctx->key[ 348 ctx->ops->ctr_crypt(&ctx->key[0], walk.src.virt.addr,
349 walk.dst.v 349 walk.dst.virt.addr,
350 round_down 350 round_down(nbytes, AES_BLOCK_SIZE),
351 walk.iv); 351 walk.iv);
352 err = skcipher_walk_done(&walk 352 err = skcipher_walk_done(&walk, nbytes % AES_BLOCK_SIZE);
353 } 353 }
354 if (walk.nbytes) { 354 if (walk.nbytes) {
355 ctr_crypt_final(ctx, &walk); 355 ctr_crypt_final(ctx, &walk);
356 err = skcipher_walk_done(&walk 356 err = skcipher_walk_done(&walk, 0);
357 } 357 }
358 fprs_write(0); 358 fprs_write(0);
359 return err; 359 return err;
360 } 360 }
361 361
362 static struct crypto_alg cipher_alg = { 362 static struct crypto_alg cipher_alg = {
363 .cra_name = "aes", 363 .cra_name = "aes",
364 .cra_driver_name = "aes-sparc64 364 .cra_driver_name = "aes-sparc64",
365 .cra_priority = SPARC_CR_OPC 365 .cra_priority = SPARC_CR_OPCODE_PRIORITY,
366 .cra_flags = CRYPTO_ALG_T 366 .cra_flags = CRYPTO_ALG_TYPE_CIPHER,
367 .cra_blocksize = AES_BLOCK_SI 367 .cra_blocksize = AES_BLOCK_SIZE,
368 .cra_ctxsize = sizeof(struc 368 .cra_ctxsize = sizeof(struct crypto_sparc64_aes_ctx),
369 .cra_alignmask = 3, 369 .cra_alignmask = 3,
370 .cra_module = THIS_MODULE, 370 .cra_module = THIS_MODULE,
371 .cra_u = { 371 .cra_u = {
372 .cipher = { 372 .cipher = {
373 .cia_min_keysize 373 .cia_min_keysize = AES_MIN_KEY_SIZE,
374 .cia_max_keysize 374 .cia_max_keysize = AES_MAX_KEY_SIZE,
375 .cia_setkey 375 .cia_setkey = aes_set_key,
376 .cia_encrypt 376 .cia_encrypt = crypto_aes_encrypt,
377 .cia_decrypt 377 .cia_decrypt = crypto_aes_decrypt
378 } 378 }
379 } 379 }
380 }; 380 };
381 381
382 static struct skcipher_alg skcipher_algs[] = { 382 static struct skcipher_alg skcipher_algs[] = {
383 { 383 {
384 .base.cra_name = "ecb 384 .base.cra_name = "ecb(aes)",
385 .base.cra_driver_name = "ecb 385 .base.cra_driver_name = "ecb-aes-sparc64",
386 .base.cra_priority = SPAR 386 .base.cra_priority = SPARC_CR_OPCODE_PRIORITY,
387 .base.cra_blocksize = AES_ 387 .base.cra_blocksize = AES_BLOCK_SIZE,
388 .base.cra_ctxsize = size 388 .base.cra_ctxsize = sizeof(struct crypto_sparc64_aes_ctx),
389 .base.cra_alignmask = 7, 389 .base.cra_alignmask = 7,
390 .base.cra_module = THIS 390 .base.cra_module = THIS_MODULE,
391 .min_keysize = AES_ 391 .min_keysize = AES_MIN_KEY_SIZE,
392 .max_keysize = AES_ 392 .max_keysize = AES_MAX_KEY_SIZE,
393 .setkey = aes_ 393 .setkey = aes_set_key_skcipher,
394 .encrypt = ecb_ 394 .encrypt = ecb_encrypt,
395 .decrypt = ecb_ 395 .decrypt = ecb_decrypt,
396 }, { 396 }, {
397 .base.cra_name = "cbc 397 .base.cra_name = "cbc(aes)",
398 .base.cra_driver_name = "cbc 398 .base.cra_driver_name = "cbc-aes-sparc64",
399 .base.cra_priority = SPAR 399 .base.cra_priority = SPARC_CR_OPCODE_PRIORITY,
400 .base.cra_blocksize = AES_ 400 .base.cra_blocksize = AES_BLOCK_SIZE,
401 .base.cra_ctxsize = size 401 .base.cra_ctxsize = sizeof(struct crypto_sparc64_aes_ctx),
402 .base.cra_alignmask = 7, 402 .base.cra_alignmask = 7,
403 .base.cra_module = THIS 403 .base.cra_module = THIS_MODULE,
404 .min_keysize = AES_ 404 .min_keysize = AES_MIN_KEY_SIZE,
405 .max_keysize = AES_ 405 .max_keysize = AES_MAX_KEY_SIZE,
406 .ivsize = AES_ 406 .ivsize = AES_BLOCK_SIZE,
407 .setkey = aes_ 407 .setkey = aes_set_key_skcipher,
408 .encrypt = cbc_ 408 .encrypt = cbc_encrypt,
409 .decrypt = cbc_ 409 .decrypt = cbc_decrypt,
410 }, { 410 }, {
411 .base.cra_name = "ctr 411 .base.cra_name = "ctr(aes)",
412 .base.cra_driver_name = "ctr 412 .base.cra_driver_name = "ctr-aes-sparc64",
413 .base.cra_priority = SPAR 413 .base.cra_priority = SPARC_CR_OPCODE_PRIORITY,
414 .base.cra_blocksize = 1, 414 .base.cra_blocksize = 1,
415 .base.cra_ctxsize = size 415 .base.cra_ctxsize = sizeof(struct crypto_sparc64_aes_ctx),
416 .base.cra_alignmask = 7, 416 .base.cra_alignmask = 7,
417 .base.cra_module = THIS 417 .base.cra_module = THIS_MODULE,
418 .min_keysize = AES_ 418 .min_keysize = AES_MIN_KEY_SIZE,
419 .max_keysize = AES_ 419 .max_keysize = AES_MAX_KEY_SIZE,
420 .ivsize = AES_ 420 .ivsize = AES_BLOCK_SIZE,
421 .setkey = aes_ 421 .setkey = aes_set_key_skcipher,
422 .encrypt = ctr_ 422 .encrypt = ctr_crypt,
423 .decrypt = ctr_ 423 .decrypt = ctr_crypt,
424 .chunksize = AES_ 424 .chunksize = AES_BLOCK_SIZE,
425 } 425 }
426 }; 426 };
427 427
428 static bool __init sparc64_has_aes_opcode(void 428 static bool __init sparc64_has_aes_opcode(void)
429 { 429 {
430 unsigned long cfr; 430 unsigned long cfr;
431 431
432 if (!(sparc64_elf_hwcap & HWCAP_SPARC_ 432 if (!(sparc64_elf_hwcap & HWCAP_SPARC_CRYPTO))
433 return false; 433 return false;
434 434
435 __asm__ __volatile__("rd %%asr26, %0" 435 __asm__ __volatile__("rd %%asr26, %0" : "=r" (cfr));
436 if (!(cfr & CFR_AES)) 436 if (!(cfr & CFR_AES))
437 return false; 437 return false;
438 438
439 return true; 439 return true;
440 } 440 }
441 441
442 static int __init aes_sparc64_mod_init(void) 442 static int __init aes_sparc64_mod_init(void)
443 { 443 {
444 int err; 444 int err;
445 445
446 if (!sparc64_has_aes_opcode()) { 446 if (!sparc64_has_aes_opcode()) {
447 pr_info("sparc64 aes opcodes n 447 pr_info("sparc64 aes opcodes not available.\n");
448 return -ENODEV; 448 return -ENODEV;
449 } 449 }
450 pr_info("Using sparc64 aes opcodes opt 450 pr_info("Using sparc64 aes opcodes optimized AES implementation\n");
451 err = crypto_register_alg(&cipher_alg) 451 err = crypto_register_alg(&cipher_alg);
452 if (err) 452 if (err)
453 return err; 453 return err;
454 err = crypto_register_skciphers(skciph 454 err = crypto_register_skciphers(skcipher_algs,
455 ARRAY_ 455 ARRAY_SIZE(skcipher_algs));
456 if (err) 456 if (err)
457 crypto_unregister_alg(&cipher_ 457 crypto_unregister_alg(&cipher_alg);
458 return err; 458 return err;
459 } 459 }
460 460
461 static void __exit aes_sparc64_mod_fini(void) 461 static void __exit aes_sparc64_mod_fini(void)
462 { 462 {
463 crypto_unregister_alg(&cipher_alg); 463 crypto_unregister_alg(&cipher_alg);
464 crypto_unregister_skciphers(skcipher_a 464 crypto_unregister_skciphers(skcipher_algs, ARRAY_SIZE(skcipher_algs));
465 } 465 }
466 466
467 module_init(aes_sparc64_mod_init); 467 module_init(aes_sparc64_mod_init);
468 module_exit(aes_sparc64_mod_fini); 468 module_exit(aes_sparc64_mod_fini);
469 469
470 MODULE_LICENSE("GPL"); 470 MODULE_LICENSE("GPL");
471 MODULE_DESCRIPTION("Rijndael (AES) Cipher Algo 471 MODULE_DESCRIPTION("Rijndael (AES) Cipher Algorithm, sparc64 aes opcode accelerated");
472 472
473 MODULE_ALIAS_CRYPTO("aes"); 473 MODULE_ALIAS_CRYPTO("aes");
474 474
475 #include "crop_devid.c" 475 #include "crop_devid.c"
476 476
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