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c5aac2df DM |
1 | /* Glue code for DES encryption optimized for sparc64 crypto opcodes. |
2 | * | |
3 | * Copyright (C) 2012 David S. Miller <davem@davemloft.net> | |
4 | */ | |
5 | ||
71741680 DM |
6 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
7 | ||
c5aac2df DM |
8 | #include <linux/crypto.h> |
9 | #include <linux/init.h> | |
10 | #include <linux/module.h> | |
11 | #include <linux/mm.h> | |
12 | #include <linux/types.h> | |
13 | #include <crypto/algapi.h> | |
14 | #include <crypto/des.h> | |
15 | ||
16 | #include <asm/fpumacro.h> | |
17 | #include <asm/pstate.h> | |
18 | #include <asm/elf.h> | |
19 | ||
10803624 DM |
20 | #include "opcodes.h" |
21 | ||
c5aac2df DM |
22 | struct des_sparc64_ctx { |
23 | u64 encrypt_expkey[DES_EXPKEY_WORDS / 2]; | |
24 | u64 decrypt_expkey[DES_EXPKEY_WORDS / 2]; | |
25 | }; | |
26 | ||
27 | struct des3_ede_sparc64_ctx { | |
28 | u64 encrypt_expkey[DES3_EDE_EXPKEY_WORDS / 2]; | |
29 | u64 decrypt_expkey[DES3_EDE_EXPKEY_WORDS / 2]; | |
30 | }; | |
31 | ||
32 | static void encrypt_to_decrypt(u64 *d, const u64 *e) | |
33 | { | |
34 | const u64 *s = e + (DES_EXPKEY_WORDS / 2) - 1; | |
35 | int i; | |
36 | ||
37 | for (i = 0; i < DES_EXPKEY_WORDS / 2; i++) | |
38 | *d++ = *s--; | |
39 | } | |
40 | ||
41 | extern void des_sparc64_key_expand(const u32 *input_key, u64 *key); | |
42 | ||
43 | static int des_set_key(struct crypto_tfm *tfm, const u8 *key, | |
44 | unsigned int keylen) | |
45 | { | |
46 | struct des_sparc64_ctx *dctx = crypto_tfm_ctx(tfm); | |
47 | u32 *flags = &tfm->crt_flags; | |
48 | u32 tmp[DES_EXPKEY_WORDS]; | |
49 | int ret; | |
50 | ||
51 | /* Even though we have special instructions for key expansion, | |
52 | * we call des_ekey() so that we don't have to write our own | |
53 | * weak key detection code. | |
54 | */ | |
55 | ret = des_ekey(tmp, key); | |
56 | if (unlikely(ret == 0) && (*flags & CRYPTO_TFM_REQ_WEAK_KEY)) { | |
57 | *flags |= CRYPTO_TFM_RES_WEAK_KEY; | |
58 | return -EINVAL; | |
59 | } | |
60 | ||
61 | des_sparc64_key_expand((const u32 *) key, &dctx->encrypt_expkey[0]); | |
62 | encrypt_to_decrypt(&dctx->decrypt_expkey[0], &dctx->encrypt_expkey[0]); | |
63 | ||
64 | return 0; | |
65 | } | |
66 | ||
67 | extern void des_sparc64_crypt(const u64 *key, const u64 *input, | |
68 | u64 *output); | |
69 | ||
70 | static void des_encrypt(struct crypto_tfm *tfm, u8 *dst, const u8 *src) | |
71 | { | |
72 | struct des_sparc64_ctx *ctx = crypto_tfm_ctx(tfm); | |
73 | const u64 *K = ctx->encrypt_expkey; | |
74 | ||
75 | des_sparc64_crypt(K, (const u64 *) src, (u64 *) dst); | |
76 | } | |
77 | ||
78 | static void des_decrypt(struct crypto_tfm *tfm, u8 *dst, const u8 *src) | |
79 | { | |
80 | struct des_sparc64_ctx *ctx = crypto_tfm_ctx(tfm); | |
81 | const u64 *K = ctx->decrypt_expkey; | |
82 | ||
83 | des_sparc64_crypt(K, (const u64 *) src, (u64 *) dst); | |
84 | } | |
85 | ||
86 | extern void des_sparc64_load_keys(const u64 *key); | |
87 | ||
88 | extern void des_sparc64_ecb_crypt(const u64 *input, u64 *output, | |
89 | unsigned int len); | |
90 | ||
91 | #define DES_BLOCK_MASK (~(DES_BLOCK_SIZE - 1)) | |
92 | ||
93 | static int __ecb_crypt(struct blkcipher_desc *desc, | |
94 | struct scatterlist *dst, struct scatterlist *src, | |
95 | unsigned int nbytes, bool encrypt) | |
96 | { | |
97 | struct des_sparc64_ctx *ctx = crypto_blkcipher_ctx(desc->tfm); | |
98 | struct blkcipher_walk walk; | |
99 | int err; | |
100 | ||
101 | blkcipher_walk_init(&walk, dst, src, nbytes); | |
102 | err = blkcipher_walk_virt(desc, &walk); | |
b3a37947 | 103 | desc->flags &= ~CRYPTO_TFM_REQ_MAY_SLEEP; |
c5aac2df DM |
104 | |
105 | if (encrypt) | |
106 | des_sparc64_load_keys(&ctx->encrypt_expkey[0]); | |
107 | else | |
108 | des_sparc64_load_keys(&ctx->decrypt_expkey[0]); | |
109 | while ((nbytes = walk.nbytes)) { | |
110 | unsigned int block_len = nbytes & DES_BLOCK_MASK; | |
111 | ||
112 | if (likely(block_len)) { | |
113 | des_sparc64_ecb_crypt((const u64 *)walk.src.virt.addr, | |
114 | (u64 *) walk.dst.virt.addr, | |
115 | block_len); | |
116 | } | |
117 | nbytes &= DES_BLOCK_SIZE - 1; | |
118 | err = blkcipher_walk_done(desc, &walk, nbytes); | |
119 | } | |
120 | fprs_write(0); | |
121 | return err; | |
122 | } | |
123 | ||
124 | static int ecb_encrypt(struct blkcipher_desc *desc, | |
125 | struct scatterlist *dst, struct scatterlist *src, | |
126 | unsigned int nbytes) | |
127 | { | |
128 | return __ecb_crypt(desc, dst, src, nbytes, true); | |
129 | } | |
130 | ||
131 | static int ecb_decrypt(struct blkcipher_desc *desc, | |
132 | struct scatterlist *dst, struct scatterlist *src, | |
133 | unsigned int nbytes) | |
134 | { | |
135 | return __ecb_crypt(desc, dst, src, nbytes, false); | |
136 | } | |
137 | ||
138 | extern void des_sparc64_cbc_encrypt(const u64 *input, u64 *output, | |
139 | unsigned int len, u64 *iv); | |
140 | ||
141 | static int cbc_encrypt(struct blkcipher_desc *desc, | |
142 | struct scatterlist *dst, struct scatterlist *src, | |
143 | unsigned int nbytes) | |
144 | { | |
145 | struct des_sparc64_ctx *ctx = crypto_blkcipher_ctx(desc->tfm); | |
146 | struct blkcipher_walk walk; | |
147 | int err; | |
148 | ||
149 | blkcipher_walk_init(&walk, dst, src, nbytes); | |
150 | err = blkcipher_walk_virt(desc, &walk); | |
b3a37947 | 151 | desc->flags &= ~CRYPTO_TFM_REQ_MAY_SLEEP; |
c5aac2df DM |
152 | |
153 | des_sparc64_load_keys(&ctx->encrypt_expkey[0]); | |
154 | while ((nbytes = walk.nbytes)) { | |
155 | unsigned int block_len = nbytes & DES_BLOCK_MASK; | |
156 | ||
157 | if (likely(block_len)) { | |
158 | des_sparc64_cbc_encrypt((const u64 *)walk.src.virt.addr, | |
159 | (u64 *) walk.dst.virt.addr, | |
160 | block_len, (u64 *) walk.iv); | |
161 | } | |
162 | nbytes &= DES_BLOCK_SIZE - 1; | |
163 | err = blkcipher_walk_done(desc, &walk, nbytes); | |
164 | } | |
165 | fprs_write(0); | |
166 | return err; | |
167 | } | |
168 | ||
169 | extern void des_sparc64_cbc_decrypt(const u64 *input, u64 *output, | |
170 | unsigned int len, u64 *iv); | |
171 | ||
172 | static int cbc_decrypt(struct blkcipher_desc *desc, | |
173 | struct scatterlist *dst, struct scatterlist *src, | |
174 | unsigned int nbytes) | |
175 | { | |
176 | struct des_sparc64_ctx *ctx = crypto_blkcipher_ctx(desc->tfm); | |
177 | struct blkcipher_walk walk; | |
178 | int err; | |
179 | ||
180 | blkcipher_walk_init(&walk, dst, src, nbytes); | |
181 | err = blkcipher_walk_virt(desc, &walk); | |
b3a37947 | 182 | desc->flags &= ~CRYPTO_TFM_REQ_MAY_SLEEP; |
c5aac2df DM |
183 | |
184 | des_sparc64_load_keys(&ctx->decrypt_expkey[0]); | |
185 | while ((nbytes = walk.nbytes)) { | |
186 | unsigned int block_len = nbytes & DES_BLOCK_MASK; | |
187 | ||
188 | if (likely(block_len)) { | |
189 | des_sparc64_cbc_decrypt((const u64 *)walk.src.virt.addr, | |
190 | (u64 *) walk.dst.virt.addr, | |
191 | block_len, (u64 *) walk.iv); | |
192 | } | |
193 | nbytes &= DES_BLOCK_SIZE - 1; | |
194 | err = blkcipher_walk_done(desc, &walk, nbytes); | |
195 | } | |
196 | fprs_write(0); | |
197 | return err; | |
198 | } | |
199 | ||
200 | static int des3_ede_set_key(struct crypto_tfm *tfm, const u8 *key, | |
201 | unsigned int keylen) | |
202 | { | |
203 | struct des3_ede_sparc64_ctx *dctx = crypto_tfm_ctx(tfm); | |
204 | const u32 *K = (const u32 *)key; | |
205 | u32 *flags = &tfm->crt_flags; | |
206 | u64 k1[DES_EXPKEY_WORDS / 2]; | |
207 | u64 k2[DES_EXPKEY_WORDS / 2]; | |
208 | u64 k3[DES_EXPKEY_WORDS / 2]; | |
209 | ||
210 | if (unlikely(!((K[0] ^ K[2]) | (K[1] ^ K[3])) || | |
211 | !((K[2] ^ K[4]) | (K[3] ^ K[5]))) && | |
212 | (*flags & CRYPTO_TFM_REQ_WEAK_KEY)) { | |
213 | *flags |= CRYPTO_TFM_RES_WEAK_KEY; | |
214 | return -EINVAL; | |
215 | } | |
216 | ||
217 | des_sparc64_key_expand((const u32 *)key, k1); | |
218 | key += DES_KEY_SIZE; | |
219 | des_sparc64_key_expand((const u32 *)key, k2); | |
220 | key += DES_KEY_SIZE; | |
221 | des_sparc64_key_expand((const u32 *)key, k3); | |
222 | ||
223 | memcpy(&dctx->encrypt_expkey[0], &k1[0], sizeof(k1)); | |
224 | encrypt_to_decrypt(&dctx->encrypt_expkey[DES_EXPKEY_WORDS / 2], &k2[0]); | |
225 | memcpy(&dctx->encrypt_expkey[(DES_EXPKEY_WORDS / 2) * 2], | |
226 | &k3[0], sizeof(k3)); | |
227 | ||
228 | encrypt_to_decrypt(&dctx->decrypt_expkey[0], &k3[0]); | |
229 | memcpy(&dctx->decrypt_expkey[DES_EXPKEY_WORDS / 2], | |
230 | &k2[0], sizeof(k2)); | |
231 | encrypt_to_decrypt(&dctx->decrypt_expkey[(DES_EXPKEY_WORDS / 2) * 2], | |
232 | &k1[0]); | |
233 | ||
234 | return 0; | |
235 | } | |
236 | ||
237 | extern void des3_ede_sparc64_crypt(const u64 *key, const u64 *input, | |
238 | u64 *output); | |
239 | ||
240 | static void des3_ede_encrypt(struct crypto_tfm *tfm, u8 *dst, const u8 *src) | |
241 | { | |
242 | struct des3_ede_sparc64_ctx *ctx = crypto_tfm_ctx(tfm); | |
243 | const u64 *K = ctx->encrypt_expkey; | |
244 | ||
245 | des3_ede_sparc64_crypt(K, (const u64 *) src, (u64 *) dst); | |
246 | } | |
247 | ||
248 | static void des3_ede_decrypt(struct crypto_tfm *tfm, u8 *dst, const u8 *src) | |
249 | { | |
250 | struct des3_ede_sparc64_ctx *ctx = crypto_tfm_ctx(tfm); | |
251 | const u64 *K = ctx->decrypt_expkey; | |
252 | ||
253 | des3_ede_sparc64_crypt(K, (const u64 *) src, (u64 *) dst); | |
254 | } | |
255 | ||
256 | extern void des3_ede_sparc64_load_keys(const u64 *key); | |
257 | ||
258 | extern void des3_ede_sparc64_ecb_crypt(const u64 *expkey, const u64 *input, | |
259 | u64 *output, unsigned int len); | |
260 | ||
261 | static int __ecb3_crypt(struct blkcipher_desc *desc, | |
262 | struct scatterlist *dst, struct scatterlist *src, | |
263 | unsigned int nbytes, bool encrypt) | |
264 | { | |
265 | struct des3_ede_sparc64_ctx *ctx = crypto_blkcipher_ctx(desc->tfm); | |
266 | struct blkcipher_walk walk; | |
267 | const u64 *K; | |
268 | int err; | |
269 | ||
270 | blkcipher_walk_init(&walk, dst, src, nbytes); | |
271 | err = blkcipher_walk_virt(desc, &walk); | |
b3a37947 | 272 | desc->flags &= ~CRYPTO_TFM_REQ_MAY_SLEEP; |
c5aac2df DM |
273 | |
274 | if (encrypt) | |
275 | K = &ctx->encrypt_expkey[0]; | |
276 | else | |
277 | K = &ctx->decrypt_expkey[0]; | |
278 | des3_ede_sparc64_load_keys(K); | |
279 | while ((nbytes = walk.nbytes)) { | |
280 | unsigned int block_len = nbytes & DES_BLOCK_MASK; | |
281 | ||
282 | if (likely(block_len)) { | |
283 | const u64 *src64 = (const u64 *)walk.src.virt.addr; | |
284 | des3_ede_sparc64_ecb_crypt(K, src64, | |
285 | (u64 *) walk.dst.virt.addr, | |
286 | block_len); | |
287 | } | |
288 | nbytes &= DES_BLOCK_SIZE - 1; | |
289 | err = blkcipher_walk_done(desc, &walk, nbytes); | |
290 | } | |
291 | fprs_write(0); | |
292 | return err; | |
293 | } | |
294 | ||
295 | static int ecb3_encrypt(struct blkcipher_desc *desc, | |
296 | struct scatterlist *dst, struct scatterlist *src, | |
297 | unsigned int nbytes) | |
298 | { | |
299 | return __ecb3_crypt(desc, dst, src, nbytes, true); | |
300 | } | |
301 | ||
302 | static int ecb3_decrypt(struct blkcipher_desc *desc, | |
303 | struct scatterlist *dst, struct scatterlist *src, | |
304 | unsigned int nbytes) | |
305 | { | |
306 | return __ecb3_crypt(desc, dst, src, nbytes, false); | |
307 | } | |
308 | ||
309 | extern void des3_ede_sparc64_cbc_encrypt(const u64 *expkey, const u64 *input, | |
310 | u64 *output, unsigned int len, | |
311 | u64 *iv); | |
312 | ||
313 | static int cbc3_encrypt(struct blkcipher_desc *desc, | |
314 | struct scatterlist *dst, struct scatterlist *src, | |
315 | unsigned int nbytes) | |
316 | { | |
317 | struct des3_ede_sparc64_ctx *ctx = crypto_blkcipher_ctx(desc->tfm); | |
318 | struct blkcipher_walk walk; | |
319 | const u64 *K; | |
320 | int err; | |
321 | ||
322 | blkcipher_walk_init(&walk, dst, src, nbytes); | |
323 | err = blkcipher_walk_virt(desc, &walk); | |
b3a37947 | 324 | desc->flags &= ~CRYPTO_TFM_REQ_MAY_SLEEP; |
c5aac2df DM |
325 | |
326 | K = &ctx->encrypt_expkey[0]; | |
327 | des3_ede_sparc64_load_keys(K); | |
328 | while ((nbytes = walk.nbytes)) { | |
329 | unsigned int block_len = nbytes & DES_BLOCK_MASK; | |
330 | ||
331 | if (likely(block_len)) { | |
332 | const u64 *src64 = (const u64 *)walk.src.virt.addr; | |
333 | des3_ede_sparc64_cbc_encrypt(K, src64, | |
334 | (u64 *) walk.dst.virt.addr, | |
335 | block_len, | |
336 | (u64 *) walk.iv); | |
337 | } | |
338 | nbytes &= DES_BLOCK_SIZE - 1; | |
339 | err = blkcipher_walk_done(desc, &walk, nbytes); | |
340 | } | |
341 | fprs_write(0); | |
342 | return err; | |
343 | } | |
344 | ||
345 | extern void des3_ede_sparc64_cbc_decrypt(const u64 *expkey, const u64 *input, | |
346 | u64 *output, unsigned int len, | |
347 | u64 *iv); | |
348 | ||
349 | static int cbc3_decrypt(struct blkcipher_desc *desc, | |
350 | struct scatterlist *dst, struct scatterlist *src, | |
351 | unsigned int nbytes) | |
352 | { | |
353 | struct des3_ede_sparc64_ctx *ctx = crypto_blkcipher_ctx(desc->tfm); | |
354 | struct blkcipher_walk walk; | |
355 | const u64 *K; | |
356 | int err; | |
357 | ||
358 | blkcipher_walk_init(&walk, dst, src, nbytes); | |
359 | err = blkcipher_walk_virt(desc, &walk); | |
b3a37947 | 360 | desc->flags &= ~CRYPTO_TFM_REQ_MAY_SLEEP; |
c5aac2df DM |
361 | |
362 | K = &ctx->decrypt_expkey[0]; | |
363 | des3_ede_sparc64_load_keys(K); | |
364 | while ((nbytes = walk.nbytes)) { | |
365 | unsigned int block_len = nbytes & DES_BLOCK_MASK; | |
366 | ||
367 | if (likely(block_len)) { | |
368 | const u64 *src64 = (const u64 *)walk.src.virt.addr; | |
369 | des3_ede_sparc64_cbc_decrypt(K, src64, | |
370 | (u64 *) walk.dst.virt.addr, | |
371 | block_len, | |
372 | (u64 *) walk.iv); | |
373 | } | |
374 | nbytes &= DES_BLOCK_SIZE - 1; | |
375 | err = blkcipher_walk_done(desc, &walk, nbytes); | |
376 | } | |
377 | fprs_write(0); | |
378 | return err; | |
379 | } | |
380 | ||
381 | static struct crypto_alg algs[] = { { | |
382 | .cra_name = "des", | |
383 | .cra_driver_name = "des-sparc64", | |
10803624 | 384 | .cra_priority = SPARC_CR_OPCODE_PRIORITY, |
c5aac2df DM |
385 | .cra_flags = CRYPTO_ALG_TYPE_CIPHER, |
386 | .cra_blocksize = DES_BLOCK_SIZE, | |
387 | .cra_ctxsize = sizeof(struct des_sparc64_ctx), | |
388 | .cra_alignmask = 7, | |
389 | .cra_module = THIS_MODULE, | |
390 | .cra_u = { | |
391 | .cipher = { | |
392 | .cia_min_keysize = DES_KEY_SIZE, | |
393 | .cia_max_keysize = DES_KEY_SIZE, | |
394 | .cia_setkey = des_set_key, | |
395 | .cia_encrypt = des_encrypt, | |
396 | .cia_decrypt = des_decrypt | |
397 | } | |
398 | } | |
399 | }, { | |
400 | .cra_name = "ecb(des)", | |
401 | .cra_driver_name = "ecb-des-sparc64", | |
10803624 | 402 | .cra_priority = SPARC_CR_OPCODE_PRIORITY, |
c5aac2df DM |
403 | .cra_flags = CRYPTO_ALG_TYPE_BLKCIPHER, |
404 | .cra_blocksize = DES_BLOCK_SIZE, | |
405 | .cra_ctxsize = sizeof(struct des_sparc64_ctx), | |
406 | .cra_alignmask = 7, | |
407 | .cra_type = &crypto_blkcipher_type, | |
408 | .cra_module = THIS_MODULE, | |
409 | .cra_u = { | |
410 | .blkcipher = { | |
411 | .min_keysize = DES_KEY_SIZE, | |
412 | .max_keysize = DES_KEY_SIZE, | |
413 | .setkey = des_set_key, | |
414 | .encrypt = ecb_encrypt, | |
415 | .decrypt = ecb_decrypt, | |
416 | }, | |
417 | }, | |
418 | }, { | |
419 | .cra_name = "cbc(des)", | |
420 | .cra_driver_name = "cbc-des-sparc64", | |
10803624 | 421 | .cra_priority = SPARC_CR_OPCODE_PRIORITY, |
c5aac2df DM |
422 | .cra_flags = CRYPTO_ALG_TYPE_BLKCIPHER, |
423 | .cra_blocksize = DES_BLOCK_SIZE, | |
424 | .cra_ctxsize = sizeof(struct des_sparc64_ctx), | |
425 | .cra_alignmask = 7, | |
426 | .cra_type = &crypto_blkcipher_type, | |
427 | .cra_module = THIS_MODULE, | |
428 | .cra_u = { | |
429 | .blkcipher = { | |
430 | .min_keysize = DES_KEY_SIZE, | |
431 | .max_keysize = DES_KEY_SIZE, | |
a66d7f72 | 432 | .ivsize = DES_BLOCK_SIZE, |
c5aac2df DM |
433 | .setkey = des_set_key, |
434 | .encrypt = cbc_encrypt, | |
435 | .decrypt = cbc_decrypt, | |
436 | }, | |
437 | }, | |
438 | }, { | |
439 | .cra_name = "des3_ede", | |
440 | .cra_driver_name = "des3_ede-sparc64", | |
10803624 | 441 | .cra_priority = SPARC_CR_OPCODE_PRIORITY, |
c5aac2df DM |
442 | .cra_flags = CRYPTO_ALG_TYPE_CIPHER, |
443 | .cra_blocksize = DES3_EDE_BLOCK_SIZE, | |
444 | .cra_ctxsize = sizeof(struct des3_ede_sparc64_ctx), | |
445 | .cra_alignmask = 7, | |
446 | .cra_module = THIS_MODULE, | |
447 | .cra_u = { | |
448 | .cipher = { | |
449 | .cia_min_keysize = DES3_EDE_KEY_SIZE, | |
450 | .cia_max_keysize = DES3_EDE_KEY_SIZE, | |
451 | .cia_setkey = des3_ede_set_key, | |
452 | .cia_encrypt = des3_ede_encrypt, | |
453 | .cia_decrypt = des3_ede_decrypt | |
454 | } | |
455 | } | |
456 | }, { | |
457 | .cra_name = "ecb(des3_ede)", | |
458 | .cra_driver_name = "ecb-des3_ede-sparc64", | |
10803624 | 459 | .cra_priority = SPARC_CR_OPCODE_PRIORITY, |
c5aac2df DM |
460 | .cra_flags = CRYPTO_ALG_TYPE_BLKCIPHER, |
461 | .cra_blocksize = DES3_EDE_BLOCK_SIZE, | |
462 | .cra_ctxsize = sizeof(struct des3_ede_sparc64_ctx), | |
463 | .cra_alignmask = 7, | |
464 | .cra_type = &crypto_blkcipher_type, | |
465 | .cra_module = THIS_MODULE, | |
466 | .cra_u = { | |
467 | .blkcipher = { | |
468 | .min_keysize = DES3_EDE_KEY_SIZE, | |
469 | .max_keysize = DES3_EDE_KEY_SIZE, | |
470 | .setkey = des3_ede_set_key, | |
471 | .encrypt = ecb3_encrypt, | |
472 | .decrypt = ecb3_decrypt, | |
473 | }, | |
474 | }, | |
475 | }, { | |
476 | .cra_name = "cbc(des3_ede)", | |
477 | .cra_driver_name = "cbc-des3_ede-sparc64", | |
10803624 | 478 | .cra_priority = SPARC_CR_OPCODE_PRIORITY, |
c5aac2df DM |
479 | .cra_flags = CRYPTO_ALG_TYPE_BLKCIPHER, |
480 | .cra_blocksize = DES3_EDE_BLOCK_SIZE, | |
481 | .cra_ctxsize = sizeof(struct des3_ede_sparc64_ctx), | |
482 | .cra_alignmask = 7, | |
483 | .cra_type = &crypto_blkcipher_type, | |
484 | .cra_module = THIS_MODULE, | |
485 | .cra_u = { | |
486 | .blkcipher = { | |
487 | .min_keysize = DES3_EDE_KEY_SIZE, | |
488 | .max_keysize = DES3_EDE_KEY_SIZE, | |
a66d7f72 | 489 | .ivsize = DES3_EDE_BLOCK_SIZE, |
c5aac2df DM |
490 | .setkey = des3_ede_set_key, |
491 | .encrypt = cbc3_encrypt, | |
492 | .decrypt = cbc3_decrypt, | |
493 | }, | |
494 | }, | |
495 | } }; | |
496 | ||
497 | static bool __init sparc64_has_des_opcode(void) | |
498 | { | |
499 | unsigned long cfr; | |
500 | ||
501 | if (!(sparc64_elf_hwcap & HWCAP_SPARC_CRYPTO)) | |
502 | return false; | |
503 | ||
504 | __asm__ __volatile__("rd %%asr26, %0" : "=r" (cfr)); | |
505 | if (!(cfr & CFR_DES)) | |
506 | return false; | |
507 | ||
508 | return true; | |
509 | } | |
510 | ||
511 | static int __init des_sparc64_mod_init(void) | |
512 | { | |
513 | int i; | |
514 | ||
515 | for (i = 0; i < ARRAY_SIZE(algs); i++) | |
516 | INIT_LIST_HEAD(&algs[i].cra_list); | |
517 | ||
518 | if (sparc64_has_des_opcode()) { | |
519 | pr_info("Using sparc64 des opcodes optimized DES implementation\n"); | |
520 | return crypto_register_algs(algs, ARRAY_SIZE(algs)); | |
521 | } | |
522 | pr_info("sparc64 des opcodes not available.\n"); | |
523 | return -ENODEV; | |
524 | } | |
525 | ||
526 | static void __exit des_sparc64_mod_fini(void) | |
527 | { | |
528 | crypto_unregister_algs(algs, ARRAY_SIZE(algs)); | |
529 | } | |
530 | ||
531 | module_init(des_sparc64_mod_init); | |
532 | module_exit(des_sparc64_mod_fini); | |
533 | ||
534 | MODULE_LICENSE("GPL"); | |
535 | MODULE_DESCRIPTION("DES & Triple DES EDE Cipher Algorithms, sparc64 des opcode accelerated"); | |
536 | ||
5d26a105 | 537 | MODULE_ALIAS_CRYPTO("des"); |
5001323b | 538 | MODULE_ALIAS_CRYPTO("des3_ede"); |
226f7cea DM |
539 | |
540 | #include "crop_devid.c" |