Commit | Line | Data |
---|---|---|
09c434b8 | 1 | // SPDX-License-Identifier: GPL-2.0-only |
c5aac2df DM |
2 | /* Glue code for DES encryption optimized for sparc64 crypto opcodes. |
3 | * | |
4 | * Copyright (C) 2012 David S. Miller <davem@davemloft.net> | |
5 | */ | |
6 | ||
71741680 DM |
7 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
8 | ||
c5aac2df DM |
9 | #include <linux/crypto.h> |
10 | #include <linux/init.h> | |
11 | #include <linux/module.h> | |
12 | #include <linux/mm.h> | |
13 | #include <linux/types.h> | |
14 | #include <crypto/algapi.h> | |
15 | #include <crypto/des.h> | |
16 | ||
17 | #include <asm/fpumacro.h> | |
18 | #include <asm/pstate.h> | |
19 | #include <asm/elf.h> | |
20 | ||
10803624 DM |
21 | #include "opcodes.h" |
22 | ||
c5aac2df DM |
23 | struct des_sparc64_ctx { |
24 | u64 encrypt_expkey[DES_EXPKEY_WORDS / 2]; | |
25 | u64 decrypt_expkey[DES_EXPKEY_WORDS / 2]; | |
26 | }; | |
27 | ||
28 | struct des3_ede_sparc64_ctx { | |
29 | u64 encrypt_expkey[DES3_EDE_EXPKEY_WORDS / 2]; | |
30 | u64 decrypt_expkey[DES3_EDE_EXPKEY_WORDS / 2]; | |
31 | }; | |
32 | ||
33 | static void encrypt_to_decrypt(u64 *d, const u64 *e) | |
34 | { | |
35 | const u64 *s = e + (DES_EXPKEY_WORDS / 2) - 1; | |
36 | int i; | |
37 | ||
38 | for (i = 0; i < DES_EXPKEY_WORDS / 2; i++) | |
39 | *d++ = *s--; | |
40 | } | |
41 | ||
42 | extern void des_sparc64_key_expand(const u32 *input_key, u64 *key); | |
43 | ||
44 | static int des_set_key(struct crypto_tfm *tfm, const u8 *key, | |
45 | unsigned int keylen) | |
46 | { | |
47 | struct des_sparc64_ctx *dctx = crypto_tfm_ctx(tfm); | |
48 | u32 *flags = &tfm->crt_flags; | |
49 | u32 tmp[DES_EXPKEY_WORDS]; | |
50 | int ret; | |
51 | ||
52 | /* Even though we have special instructions for key expansion, | |
53 | * we call des_ekey() so that we don't have to write our own | |
54 | * weak key detection code. | |
55 | */ | |
56 | ret = des_ekey(tmp, key); | |
231baecd | 57 | if (unlikely(ret == 0) && (*flags & CRYPTO_TFM_REQ_FORBID_WEAK_KEYS)) { |
c5aac2df DM |
58 | *flags |= CRYPTO_TFM_RES_WEAK_KEY; |
59 | return -EINVAL; | |
60 | } | |
61 | ||
62 | des_sparc64_key_expand((const u32 *) key, &dctx->encrypt_expkey[0]); | |
63 | encrypt_to_decrypt(&dctx->decrypt_expkey[0], &dctx->encrypt_expkey[0]); | |
64 | ||
65 | return 0; | |
66 | } | |
67 | ||
68 | extern void des_sparc64_crypt(const u64 *key, const u64 *input, | |
69 | u64 *output); | |
70 | ||
71 | static void des_encrypt(struct crypto_tfm *tfm, u8 *dst, const u8 *src) | |
72 | { | |
73 | struct des_sparc64_ctx *ctx = crypto_tfm_ctx(tfm); | |
74 | const u64 *K = ctx->encrypt_expkey; | |
75 | ||
76 | des_sparc64_crypt(K, (const u64 *) src, (u64 *) dst); | |
77 | } | |
78 | ||
79 | static void des_decrypt(struct crypto_tfm *tfm, u8 *dst, const u8 *src) | |
80 | { | |
81 | struct des_sparc64_ctx *ctx = crypto_tfm_ctx(tfm); | |
82 | const u64 *K = ctx->decrypt_expkey; | |
83 | ||
84 | des_sparc64_crypt(K, (const u64 *) src, (u64 *) dst); | |
85 | } | |
86 | ||
87 | extern void des_sparc64_load_keys(const u64 *key); | |
88 | ||
89 | extern void des_sparc64_ecb_crypt(const u64 *input, u64 *output, | |
90 | unsigned int len); | |
91 | ||
92 | #define DES_BLOCK_MASK (~(DES_BLOCK_SIZE - 1)) | |
93 | ||
94 | static int __ecb_crypt(struct blkcipher_desc *desc, | |
95 | struct scatterlist *dst, struct scatterlist *src, | |
96 | unsigned int nbytes, bool encrypt) | |
97 | { | |
98 | struct des_sparc64_ctx *ctx = crypto_blkcipher_ctx(desc->tfm); | |
99 | struct blkcipher_walk walk; | |
100 | int err; | |
101 | ||
102 | blkcipher_walk_init(&walk, dst, src, nbytes); | |
103 | err = blkcipher_walk_virt(desc, &walk); | |
b3a37947 | 104 | desc->flags &= ~CRYPTO_TFM_REQ_MAY_SLEEP; |
c5aac2df DM |
105 | |
106 | if (encrypt) | |
107 | des_sparc64_load_keys(&ctx->encrypt_expkey[0]); | |
108 | else | |
109 | des_sparc64_load_keys(&ctx->decrypt_expkey[0]); | |
110 | while ((nbytes = walk.nbytes)) { | |
111 | unsigned int block_len = nbytes & DES_BLOCK_MASK; | |
112 | ||
113 | if (likely(block_len)) { | |
114 | des_sparc64_ecb_crypt((const u64 *)walk.src.virt.addr, | |
115 | (u64 *) walk.dst.virt.addr, | |
116 | block_len); | |
117 | } | |
118 | nbytes &= DES_BLOCK_SIZE - 1; | |
119 | err = blkcipher_walk_done(desc, &walk, nbytes); | |
120 | } | |
121 | fprs_write(0); | |
122 | return err; | |
123 | } | |
124 | ||
125 | static int ecb_encrypt(struct blkcipher_desc *desc, | |
126 | struct scatterlist *dst, struct scatterlist *src, | |
127 | unsigned int nbytes) | |
128 | { | |
129 | return __ecb_crypt(desc, dst, src, nbytes, true); | |
130 | } | |
131 | ||
132 | static int ecb_decrypt(struct blkcipher_desc *desc, | |
133 | struct scatterlist *dst, struct scatterlist *src, | |
134 | unsigned int nbytes) | |
135 | { | |
136 | return __ecb_crypt(desc, dst, src, nbytes, false); | |
137 | } | |
138 | ||
139 | extern void des_sparc64_cbc_encrypt(const u64 *input, u64 *output, | |
140 | unsigned int len, u64 *iv); | |
141 | ||
142 | static int cbc_encrypt(struct blkcipher_desc *desc, | |
143 | struct scatterlist *dst, struct scatterlist *src, | |
144 | unsigned int nbytes) | |
145 | { | |
146 | struct des_sparc64_ctx *ctx = crypto_blkcipher_ctx(desc->tfm); | |
147 | struct blkcipher_walk walk; | |
148 | int err; | |
149 | ||
150 | blkcipher_walk_init(&walk, dst, src, nbytes); | |
151 | err = blkcipher_walk_virt(desc, &walk); | |
b3a37947 | 152 | desc->flags &= ~CRYPTO_TFM_REQ_MAY_SLEEP; |
c5aac2df DM |
153 | |
154 | des_sparc64_load_keys(&ctx->encrypt_expkey[0]); | |
155 | while ((nbytes = walk.nbytes)) { | |
156 | unsigned int block_len = nbytes & DES_BLOCK_MASK; | |
157 | ||
158 | if (likely(block_len)) { | |
159 | des_sparc64_cbc_encrypt((const u64 *)walk.src.virt.addr, | |
160 | (u64 *) walk.dst.virt.addr, | |
161 | block_len, (u64 *) walk.iv); | |
162 | } | |
163 | nbytes &= DES_BLOCK_SIZE - 1; | |
164 | err = blkcipher_walk_done(desc, &walk, nbytes); | |
165 | } | |
166 | fprs_write(0); | |
167 | return err; | |
168 | } | |
169 | ||
170 | extern void des_sparc64_cbc_decrypt(const u64 *input, u64 *output, | |
171 | unsigned int len, u64 *iv); | |
172 | ||
173 | static int cbc_decrypt(struct blkcipher_desc *desc, | |
174 | struct scatterlist *dst, struct scatterlist *src, | |
175 | unsigned int nbytes) | |
176 | { | |
177 | struct des_sparc64_ctx *ctx = crypto_blkcipher_ctx(desc->tfm); | |
178 | struct blkcipher_walk walk; | |
179 | int err; | |
180 | ||
181 | blkcipher_walk_init(&walk, dst, src, nbytes); | |
182 | err = blkcipher_walk_virt(desc, &walk); | |
b3a37947 | 183 | desc->flags &= ~CRYPTO_TFM_REQ_MAY_SLEEP; |
c5aac2df DM |
184 | |
185 | des_sparc64_load_keys(&ctx->decrypt_expkey[0]); | |
186 | while ((nbytes = walk.nbytes)) { | |
187 | unsigned int block_len = nbytes & DES_BLOCK_MASK; | |
188 | ||
189 | if (likely(block_len)) { | |
190 | des_sparc64_cbc_decrypt((const u64 *)walk.src.virt.addr, | |
191 | (u64 *) walk.dst.virt.addr, | |
192 | block_len, (u64 *) walk.iv); | |
193 | } | |
194 | nbytes &= DES_BLOCK_SIZE - 1; | |
195 | err = blkcipher_walk_done(desc, &walk, nbytes); | |
196 | } | |
197 | fprs_write(0); | |
198 | return err; | |
199 | } | |
200 | ||
201 | static int des3_ede_set_key(struct crypto_tfm *tfm, const u8 *key, | |
202 | unsigned int keylen) | |
203 | { | |
204 | struct des3_ede_sparc64_ctx *dctx = crypto_tfm_ctx(tfm); | |
c5aac2df DM |
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]; | |
eee25da5 | 209 | int err; |
c5aac2df | 210 | |
eee25da5 HX |
211 | err = __des3_verify_key(flags, key); |
212 | if (unlikely(err)) | |
213 | return err; | |
c5aac2df DM |
214 | |
215 | des_sparc64_key_expand((const u32 *)key, k1); | |
216 | key += DES_KEY_SIZE; | |
217 | des_sparc64_key_expand((const u32 *)key, k2); | |
218 | key += DES_KEY_SIZE; | |
219 | des_sparc64_key_expand((const u32 *)key, k3); | |
220 | ||
221 | memcpy(&dctx->encrypt_expkey[0], &k1[0], sizeof(k1)); | |
222 | encrypt_to_decrypt(&dctx->encrypt_expkey[DES_EXPKEY_WORDS / 2], &k2[0]); | |
223 | memcpy(&dctx->encrypt_expkey[(DES_EXPKEY_WORDS / 2) * 2], | |
224 | &k3[0], sizeof(k3)); | |
225 | ||
226 | encrypt_to_decrypt(&dctx->decrypt_expkey[0], &k3[0]); | |
227 | memcpy(&dctx->decrypt_expkey[DES_EXPKEY_WORDS / 2], | |
228 | &k2[0], sizeof(k2)); | |
229 | encrypt_to_decrypt(&dctx->decrypt_expkey[(DES_EXPKEY_WORDS / 2) * 2], | |
230 | &k1[0]); | |
231 | ||
232 | return 0; | |
233 | } | |
234 | ||
235 | extern void des3_ede_sparc64_crypt(const u64 *key, const u64 *input, | |
236 | u64 *output); | |
237 | ||
238 | static void des3_ede_encrypt(struct crypto_tfm *tfm, u8 *dst, const u8 *src) | |
239 | { | |
240 | struct des3_ede_sparc64_ctx *ctx = crypto_tfm_ctx(tfm); | |
241 | const u64 *K = ctx->encrypt_expkey; | |
242 | ||
243 | des3_ede_sparc64_crypt(K, (const u64 *) src, (u64 *) dst); | |
244 | } | |
245 | ||
246 | static void des3_ede_decrypt(struct crypto_tfm *tfm, u8 *dst, const u8 *src) | |
247 | { | |
248 | struct des3_ede_sparc64_ctx *ctx = crypto_tfm_ctx(tfm); | |
249 | const u64 *K = ctx->decrypt_expkey; | |
250 | ||
251 | des3_ede_sparc64_crypt(K, (const u64 *) src, (u64 *) dst); | |
252 | } | |
253 | ||
254 | extern void des3_ede_sparc64_load_keys(const u64 *key); | |
255 | ||
256 | extern void des3_ede_sparc64_ecb_crypt(const u64 *expkey, const u64 *input, | |
257 | u64 *output, unsigned int len); | |
258 | ||
259 | static int __ecb3_crypt(struct blkcipher_desc *desc, | |
260 | struct scatterlist *dst, struct scatterlist *src, | |
261 | unsigned int nbytes, bool encrypt) | |
262 | { | |
263 | struct des3_ede_sparc64_ctx *ctx = crypto_blkcipher_ctx(desc->tfm); | |
264 | struct blkcipher_walk walk; | |
265 | const u64 *K; | |
266 | int err; | |
267 | ||
268 | blkcipher_walk_init(&walk, dst, src, nbytes); | |
269 | err = blkcipher_walk_virt(desc, &walk); | |
b3a37947 | 270 | desc->flags &= ~CRYPTO_TFM_REQ_MAY_SLEEP; |
c5aac2df DM |
271 | |
272 | if (encrypt) | |
273 | K = &ctx->encrypt_expkey[0]; | |
274 | else | |
275 | K = &ctx->decrypt_expkey[0]; | |
276 | des3_ede_sparc64_load_keys(K); | |
277 | while ((nbytes = walk.nbytes)) { | |
278 | unsigned int block_len = nbytes & DES_BLOCK_MASK; | |
279 | ||
280 | if (likely(block_len)) { | |
281 | const u64 *src64 = (const u64 *)walk.src.virt.addr; | |
282 | des3_ede_sparc64_ecb_crypt(K, src64, | |
283 | (u64 *) walk.dst.virt.addr, | |
284 | block_len); | |
285 | } | |
286 | nbytes &= DES_BLOCK_SIZE - 1; | |
287 | err = blkcipher_walk_done(desc, &walk, nbytes); | |
288 | } | |
289 | fprs_write(0); | |
290 | return err; | |
291 | } | |
292 | ||
293 | static int ecb3_encrypt(struct blkcipher_desc *desc, | |
294 | struct scatterlist *dst, struct scatterlist *src, | |
295 | unsigned int nbytes) | |
296 | { | |
297 | return __ecb3_crypt(desc, dst, src, nbytes, true); | |
298 | } | |
299 | ||
300 | static int ecb3_decrypt(struct blkcipher_desc *desc, | |
301 | struct scatterlist *dst, struct scatterlist *src, | |
302 | unsigned int nbytes) | |
303 | { | |
304 | return __ecb3_crypt(desc, dst, src, nbytes, false); | |
305 | } | |
306 | ||
307 | extern void des3_ede_sparc64_cbc_encrypt(const u64 *expkey, const u64 *input, | |
308 | u64 *output, unsigned int len, | |
309 | u64 *iv); | |
310 | ||
311 | static int cbc3_encrypt(struct blkcipher_desc *desc, | |
312 | struct scatterlist *dst, struct scatterlist *src, | |
313 | unsigned int nbytes) | |
314 | { | |
315 | struct des3_ede_sparc64_ctx *ctx = crypto_blkcipher_ctx(desc->tfm); | |
316 | struct blkcipher_walk walk; | |
317 | const u64 *K; | |
318 | int err; | |
319 | ||
320 | blkcipher_walk_init(&walk, dst, src, nbytes); | |
321 | err = blkcipher_walk_virt(desc, &walk); | |
b3a37947 | 322 | desc->flags &= ~CRYPTO_TFM_REQ_MAY_SLEEP; |
c5aac2df DM |
323 | |
324 | K = &ctx->encrypt_expkey[0]; | |
325 | des3_ede_sparc64_load_keys(K); | |
326 | while ((nbytes = walk.nbytes)) { | |
327 | unsigned int block_len = nbytes & DES_BLOCK_MASK; | |
328 | ||
329 | if (likely(block_len)) { | |
330 | const u64 *src64 = (const u64 *)walk.src.virt.addr; | |
331 | des3_ede_sparc64_cbc_encrypt(K, src64, | |
332 | (u64 *) walk.dst.virt.addr, | |
333 | block_len, | |
334 | (u64 *) walk.iv); | |
335 | } | |
336 | nbytes &= DES_BLOCK_SIZE - 1; | |
337 | err = blkcipher_walk_done(desc, &walk, nbytes); | |
338 | } | |
339 | fprs_write(0); | |
340 | return err; | |
341 | } | |
342 | ||
343 | extern void des3_ede_sparc64_cbc_decrypt(const u64 *expkey, const u64 *input, | |
344 | u64 *output, unsigned int len, | |
345 | u64 *iv); | |
346 | ||
347 | static int cbc3_decrypt(struct blkcipher_desc *desc, | |
348 | struct scatterlist *dst, struct scatterlist *src, | |
349 | unsigned int nbytes) | |
350 | { | |
351 | struct des3_ede_sparc64_ctx *ctx = crypto_blkcipher_ctx(desc->tfm); | |
352 | struct blkcipher_walk walk; | |
353 | const u64 *K; | |
354 | int err; | |
355 | ||
356 | blkcipher_walk_init(&walk, dst, src, nbytes); | |
357 | err = blkcipher_walk_virt(desc, &walk); | |
b3a37947 | 358 | desc->flags &= ~CRYPTO_TFM_REQ_MAY_SLEEP; |
c5aac2df DM |
359 | |
360 | K = &ctx->decrypt_expkey[0]; | |
361 | des3_ede_sparc64_load_keys(K); | |
362 | while ((nbytes = walk.nbytes)) { | |
363 | unsigned int block_len = nbytes & DES_BLOCK_MASK; | |
364 | ||
365 | if (likely(block_len)) { | |
366 | const u64 *src64 = (const u64 *)walk.src.virt.addr; | |
367 | des3_ede_sparc64_cbc_decrypt(K, src64, | |
368 | (u64 *) walk.dst.virt.addr, | |
369 | block_len, | |
370 | (u64 *) walk.iv); | |
371 | } | |
372 | nbytes &= DES_BLOCK_SIZE - 1; | |
373 | err = blkcipher_walk_done(desc, &walk, nbytes); | |
374 | } | |
375 | fprs_write(0); | |
376 | return err; | |
377 | } | |
378 | ||
379 | static struct crypto_alg algs[] = { { | |
380 | .cra_name = "des", | |
381 | .cra_driver_name = "des-sparc64", | |
10803624 | 382 | .cra_priority = SPARC_CR_OPCODE_PRIORITY, |
c5aac2df DM |
383 | .cra_flags = CRYPTO_ALG_TYPE_CIPHER, |
384 | .cra_blocksize = DES_BLOCK_SIZE, | |
385 | .cra_ctxsize = sizeof(struct des_sparc64_ctx), | |
386 | .cra_alignmask = 7, | |
387 | .cra_module = THIS_MODULE, | |
388 | .cra_u = { | |
389 | .cipher = { | |
390 | .cia_min_keysize = DES_KEY_SIZE, | |
391 | .cia_max_keysize = DES_KEY_SIZE, | |
392 | .cia_setkey = des_set_key, | |
393 | .cia_encrypt = des_encrypt, | |
394 | .cia_decrypt = des_decrypt | |
395 | } | |
396 | } | |
397 | }, { | |
398 | .cra_name = "ecb(des)", | |
399 | .cra_driver_name = "ecb-des-sparc64", | |
10803624 | 400 | .cra_priority = SPARC_CR_OPCODE_PRIORITY, |
c5aac2df DM |
401 | .cra_flags = CRYPTO_ALG_TYPE_BLKCIPHER, |
402 | .cra_blocksize = DES_BLOCK_SIZE, | |
403 | .cra_ctxsize = sizeof(struct des_sparc64_ctx), | |
404 | .cra_alignmask = 7, | |
405 | .cra_type = &crypto_blkcipher_type, | |
406 | .cra_module = THIS_MODULE, | |
407 | .cra_u = { | |
408 | .blkcipher = { | |
409 | .min_keysize = DES_KEY_SIZE, | |
410 | .max_keysize = DES_KEY_SIZE, | |
411 | .setkey = des_set_key, | |
412 | .encrypt = ecb_encrypt, | |
413 | .decrypt = ecb_decrypt, | |
414 | }, | |
415 | }, | |
416 | }, { | |
417 | .cra_name = "cbc(des)", | |
418 | .cra_driver_name = "cbc-des-sparc64", | |
10803624 | 419 | .cra_priority = SPARC_CR_OPCODE_PRIORITY, |
c5aac2df DM |
420 | .cra_flags = CRYPTO_ALG_TYPE_BLKCIPHER, |
421 | .cra_blocksize = DES_BLOCK_SIZE, | |
422 | .cra_ctxsize = sizeof(struct des_sparc64_ctx), | |
423 | .cra_alignmask = 7, | |
424 | .cra_type = &crypto_blkcipher_type, | |
425 | .cra_module = THIS_MODULE, | |
426 | .cra_u = { | |
427 | .blkcipher = { | |
428 | .min_keysize = DES_KEY_SIZE, | |
429 | .max_keysize = DES_KEY_SIZE, | |
a66d7f72 | 430 | .ivsize = DES_BLOCK_SIZE, |
c5aac2df DM |
431 | .setkey = des_set_key, |
432 | .encrypt = cbc_encrypt, | |
433 | .decrypt = cbc_decrypt, | |
434 | }, | |
435 | }, | |
436 | }, { | |
437 | .cra_name = "des3_ede", | |
438 | .cra_driver_name = "des3_ede-sparc64", | |
10803624 | 439 | .cra_priority = SPARC_CR_OPCODE_PRIORITY, |
c5aac2df DM |
440 | .cra_flags = CRYPTO_ALG_TYPE_CIPHER, |
441 | .cra_blocksize = DES3_EDE_BLOCK_SIZE, | |
442 | .cra_ctxsize = sizeof(struct des3_ede_sparc64_ctx), | |
443 | .cra_alignmask = 7, | |
444 | .cra_module = THIS_MODULE, | |
445 | .cra_u = { | |
446 | .cipher = { | |
447 | .cia_min_keysize = DES3_EDE_KEY_SIZE, | |
448 | .cia_max_keysize = DES3_EDE_KEY_SIZE, | |
449 | .cia_setkey = des3_ede_set_key, | |
450 | .cia_encrypt = des3_ede_encrypt, | |
451 | .cia_decrypt = des3_ede_decrypt | |
452 | } | |
453 | } | |
454 | }, { | |
455 | .cra_name = "ecb(des3_ede)", | |
456 | .cra_driver_name = "ecb-des3_ede-sparc64", | |
10803624 | 457 | .cra_priority = SPARC_CR_OPCODE_PRIORITY, |
c5aac2df DM |
458 | .cra_flags = CRYPTO_ALG_TYPE_BLKCIPHER, |
459 | .cra_blocksize = DES3_EDE_BLOCK_SIZE, | |
460 | .cra_ctxsize = sizeof(struct des3_ede_sparc64_ctx), | |
461 | .cra_alignmask = 7, | |
462 | .cra_type = &crypto_blkcipher_type, | |
463 | .cra_module = THIS_MODULE, | |
464 | .cra_u = { | |
465 | .blkcipher = { | |
466 | .min_keysize = DES3_EDE_KEY_SIZE, | |
467 | .max_keysize = DES3_EDE_KEY_SIZE, | |
468 | .setkey = des3_ede_set_key, | |
469 | .encrypt = ecb3_encrypt, | |
470 | .decrypt = ecb3_decrypt, | |
471 | }, | |
472 | }, | |
473 | }, { | |
474 | .cra_name = "cbc(des3_ede)", | |
475 | .cra_driver_name = "cbc-des3_ede-sparc64", | |
10803624 | 476 | .cra_priority = SPARC_CR_OPCODE_PRIORITY, |
c5aac2df DM |
477 | .cra_flags = CRYPTO_ALG_TYPE_BLKCIPHER, |
478 | .cra_blocksize = DES3_EDE_BLOCK_SIZE, | |
479 | .cra_ctxsize = sizeof(struct des3_ede_sparc64_ctx), | |
480 | .cra_alignmask = 7, | |
481 | .cra_type = &crypto_blkcipher_type, | |
482 | .cra_module = THIS_MODULE, | |
483 | .cra_u = { | |
484 | .blkcipher = { | |
485 | .min_keysize = DES3_EDE_KEY_SIZE, | |
486 | .max_keysize = DES3_EDE_KEY_SIZE, | |
a66d7f72 | 487 | .ivsize = DES3_EDE_BLOCK_SIZE, |
c5aac2df DM |
488 | .setkey = des3_ede_set_key, |
489 | .encrypt = cbc3_encrypt, | |
490 | .decrypt = cbc3_decrypt, | |
491 | }, | |
492 | }, | |
493 | } }; | |
494 | ||
495 | static bool __init sparc64_has_des_opcode(void) | |
496 | { | |
497 | unsigned long cfr; | |
498 | ||
499 | if (!(sparc64_elf_hwcap & HWCAP_SPARC_CRYPTO)) | |
500 | return false; | |
501 | ||
502 | __asm__ __volatile__("rd %%asr26, %0" : "=r" (cfr)); | |
503 | if (!(cfr & CFR_DES)) | |
504 | return false; | |
505 | ||
506 | return true; | |
507 | } | |
508 | ||
509 | static int __init des_sparc64_mod_init(void) | |
510 | { | |
c5aac2df DM |
511 | if (sparc64_has_des_opcode()) { |
512 | pr_info("Using sparc64 des opcodes optimized DES implementation\n"); | |
513 | return crypto_register_algs(algs, ARRAY_SIZE(algs)); | |
514 | } | |
515 | pr_info("sparc64 des opcodes not available.\n"); | |
516 | return -ENODEV; | |
517 | } | |
518 | ||
519 | static void __exit des_sparc64_mod_fini(void) | |
520 | { | |
521 | crypto_unregister_algs(algs, ARRAY_SIZE(algs)); | |
522 | } | |
523 | ||
524 | module_init(des_sparc64_mod_init); | |
525 | module_exit(des_sparc64_mod_fini); | |
526 | ||
527 | MODULE_LICENSE("GPL"); | |
528 | MODULE_DESCRIPTION("DES & Triple DES EDE Cipher Algorithms, sparc64 des opcode accelerated"); | |
529 | ||
5d26a105 | 530 | MODULE_ALIAS_CRYPTO("des"); |
5001323b | 531 | MODULE_ALIAS_CRYPTO("des3_ede"); |
226f7cea DM |
532 | |
533 | #include "crop_devid.c" |