1 /*
2  * Glue Code for x86_64/AVX2/AES-NI assembler optimized version of Camellia
3  *
4  * Copyright © 2013 Jussi Kivilinna <jussi.kivilinna@mbnet.fi>
5  *
6  * This program is free software; you can redistribute it and/or modify
7  * it under the terms of the GNU General Public License as published by
8  * the Free Software Foundation; either version 2 of the License, or
9  * (at your option) any later version.
10  *
11  */
12 
13 #include <linux/module.h>
14 #include <linux/types.h>
15 #include <linux/crypto.h>
16 #include <linux/err.h>
17 #include <crypto/ablk_helper.h>
18 #include <crypto/algapi.h>
19 #include <crypto/ctr.h>
20 #include <crypto/lrw.h>
21 #include <crypto/xts.h>
22 #include <asm/xcr.h>
23 #include <asm/xsave.h>
24 #include <asm/crypto/camellia.h>
25 #include <asm/crypto/glue_helper.h>
26 
27 #define CAMELLIA_AESNI_PARALLEL_BLOCKS 16
28 #define CAMELLIA_AESNI_AVX2_PARALLEL_BLOCKS 32
29 
30 /* 32-way AVX2/AES-NI parallel cipher functions */
31 asmlinkage void camellia_ecb_enc_32way(struct camellia_ctx *ctx, u8 *dst,
32 				       const u8 *src);
33 asmlinkage void camellia_ecb_dec_32way(struct camellia_ctx *ctx, u8 *dst,
34 				       const u8 *src);
35 
36 asmlinkage void camellia_cbc_dec_32way(struct camellia_ctx *ctx, u8 *dst,
37 				       const u8 *src);
38 asmlinkage void camellia_ctr_32way(struct camellia_ctx *ctx, u8 *dst,
39 				   const u8 *src, le128 *iv);
40 
41 asmlinkage void camellia_xts_enc_32way(struct camellia_ctx *ctx, u8 *dst,
42 				       const u8 *src, le128 *iv);
43 asmlinkage void camellia_xts_dec_32way(struct camellia_ctx *ctx, u8 *dst,
44 				       const u8 *src, le128 *iv);
45 
46 static const struct common_glue_ctx camellia_enc = {
47 	.num_funcs = 4,
48 	.fpu_blocks_limit = CAMELLIA_AESNI_PARALLEL_BLOCKS,
49 
50 	.funcs = { {
51 		.num_blocks = CAMELLIA_AESNI_AVX2_PARALLEL_BLOCKS,
52 		.fn_u = { .ecb = GLUE_FUNC_CAST(camellia_ecb_enc_32way) }
53 	}, {
54 		.num_blocks = CAMELLIA_AESNI_PARALLEL_BLOCKS,
55 		.fn_u = { .ecb = GLUE_FUNC_CAST(camellia_ecb_enc_16way) }
56 	}, {
57 		.num_blocks = 2,
58 		.fn_u = { .ecb = GLUE_FUNC_CAST(camellia_enc_blk_2way) }
59 	}, {
60 		.num_blocks = 1,
61 		.fn_u = { .ecb = GLUE_FUNC_CAST(camellia_enc_blk) }
62 	} }
63 };
64 
65 static const struct common_glue_ctx camellia_ctr = {
66 	.num_funcs = 4,
67 	.fpu_blocks_limit = CAMELLIA_AESNI_PARALLEL_BLOCKS,
68 
69 	.funcs = { {
70 		.num_blocks = CAMELLIA_AESNI_AVX2_PARALLEL_BLOCKS,
71 		.fn_u = { .ctr = GLUE_CTR_FUNC_CAST(camellia_ctr_32way) }
72 	}, {
73 		.num_blocks = CAMELLIA_AESNI_PARALLEL_BLOCKS,
74 		.fn_u = { .ctr = GLUE_CTR_FUNC_CAST(camellia_ctr_16way) }
75 	}, {
76 		.num_blocks = 2,
77 		.fn_u = { .ctr = GLUE_CTR_FUNC_CAST(camellia_crypt_ctr_2way) }
78 	}, {
79 		.num_blocks = 1,
80 		.fn_u = { .ctr = GLUE_CTR_FUNC_CAST(camellia_crypt_ctr) }
81 	} }
82 };
83 
84 static const struct common_glue_ctx camellia_enc_xts = {
85 	.num_funcs = 3,
86 	.fpu_blocks_limit = CAMELLIA_AESNI_PARALLEL_BLOCKS,
87 
88 	.funcs = { {
89 		.num_blocks = CAMELLIA_AESNI_AVX2_PARALLEL_BLOCKS,
90 		.fn_u = { .xts = GLUE_XTS_FUNC_CAST(camellia_xts_enc_32way) }
91 	}, {
92 		.num_blocks = CAMELLIA_AESNI_PARALLEL_BLOCKS,
93 		.fn_u = { .xts = GLUE_XTS_FUNC_CAST(camellia_xts_enc_16way) }
94 	}, {
95 		.num_blocks = 1,
96 		.fn_u = { .xts = GLUE_XTS_FUNC_CAST(camellia_xts_enc) }
97 	} }
98 };
99 
100 static const struct common_glue_ctx camellia_dec = {
101 	.num_funcs = 4,
102 	.fpu_blocks_limit = CAMELLIA_AESNI_PARALLEL_BLOCKS,
103 
104 	.funcs = { {
105 		.num_blocks = CAMELLIA_AESNI_AVX2_PARALLEL_BLOCKS,
106 		.fn_u = { .ecb = GLUE_FUNC_CAST(camellia_ecb_dec_32way) }
107 	}, {
108 		.num_blocks = CAMELLIA_AESNI_PARALLEL_BLOCKS,
109 		.fn_u = { .ecb = GLUE_FUNC_CAST(camellia_ecb_dec_16way) }
110 	}, {
111 		.num_blocks = 2,
112 		.fn_u = { .ecb = GLUE_FUNC_CAST(camellia_dec_blk_2way) }
113 	}, {
114 		.num_blocks = 1,
115 		.fn_u = { .ecb = GLUE_FUNC_CAST(camellia_dec_blk) }
116 	} }
117 };
118 
119 static const struct common_glue_ctx camellia_dec_cbc = {
120 	.num_funcs = 4,
121 	.fpu_blocks_limit = CAMELLIA_AESNI_PARALLEL_BLOCKS,
122 
123 	.funcs = { {
124 		.num_blocks = CAMELLIA_AESNI_AVX2_PARALLEL_BLOCKS,
125 		.fn_u = { .cbc = GLUE_CBC_FUNC_CAST(camellia_cbc_dec_32way) }
126 	}, {
127 		.num_blocks = CAMELLIA_AESNI_PARALLEL_BLOCKS,
128 		.fn_u = { .cbc = GLUE_CBC_FUNC_CAST(camellia_cbc_dec_16way) }
129 	}, {
130 		.num_blocks = 2,
131 		.fn_u = { .cbc = GLUE_CBC_FUNC_CAST(camellia_decrypt_cbc_2way) }
132 	}, {
133 		.num_blocks = 1,
134 		.fn_u = { .cbc = GLUE_CBC_FUNC_CAST(camellia_dec_blk) }
135 	} }
136 };
137 
138 static const struct common_glue_ctx camellia_dec_xts = {
139 	.num_funcs = 3,
140 	.fpu_blocks_limit = CAMELLIA_AESNI_PARALLEL_BLOCKS,
141 
142 	.funcs = { {
143 		.num_blocks = CAMELLIA_AESNI_AVX2_PARALLEL_BLOCKS,
144 		.fn_u = { .xts = GLUE_XTS_FUNC_CAST(camellia_xts_dec_32way) }
145 	}, {
146 		.num_blocks = CAMELLIA_AESNI_PARALLEL_BLOCKS,
147 		.fn_u = { .xts = GLUE_XTS_FUNC_CAST(camellia_xts_dec_16way) }
148 	}, {
149 		.num_blocks = 1,
150 		.fn_u = { .xts = GLUE_XTS_FUNC_CAST(camellia_xts_dec) }
151 	} }
152 };
153 
154 static int ecb_encrypt(struct blkcipher_desc *desc, struct scatterlist *dst,
155 		       struct scatterlist *src, unsigned int nbytes)
156 {
157 	return glue_ecb_crypt_128bit(&camellia_enc, desc, dst, src, nbytes);
158 }
159 
160 static int ecb_decrypt(struct blkcipher_desc *desc, struct scatterlist *dst,
161 		       struct scatterlist *src, unsigned int nbytes)
162 {
163 	return glue_ecb_crypt_128bit(&camellia_dec, desc, dst, src, nbytes);
164 }
165 
166 static int cbc_encrypt(struct blkcipher_desc *desc, struct scatterlist *dst,
167 		       struct scatterlist *src, unsigned int nbytes)
168 {
169 	return glue_cbc_encrypt_128bit(GLUE_FUNC_CAST(camellia_enc_blk), desc,
170 				       dst, src, nbytes);
171 }
172 
173 static int cbc_decrypt(struct blkcipher_desc *desc, struct scatterlist *dst,
174 		       struct scatterlist *src, unsigned int nbytes)
175 {
176 	return glue_cbc_decrypt_128bit(&camellia_dec_cbc, desc, dst, src,
177 				       nbytes);
178 }
179 
180 static int ctr_crypt(struct blkcipher_desc *desc, struct scatterlist *dst,
181 		     struct scatterlist *src, unsigned int nbytes)
182 {
183 	return glue_ctr_crypt_128bit(&camellia_ctr, desc, dst, src, nbytes);
184 }
185 
186 static inline bool camellia_fpu_begin(bool fpu_enabled, unsigned int nbytes)
187 {
188 	return glue_fpu_begin(CAMELLIA_BLOCK_SIZE,
189 			      CAMELLIA_AESNI_PARALLEL_BLOCKS, NULL, fpu_enabled,
190 			      nbytes);
191 }
192 
193 static inline void camellia_fpu_end(bool fpu_enabled)
194 {
195 	glue_fpu_end(fpu_enabled);
196 }
197 
198 static int camellia_setkey(struct crypto_tfm *tfm, const u8 *in_key,
199 			   unsigned int key_len)
200 {
201 	return __camellia_setkey(crypto_tfm_ctx(tfm), in_key, key_len,
202 				 &tfm->crt_flags);
203 }
204 
205 struct crypt_priv {
206 	struct camellia_ctx *ctx;
207 	bool fpu_enabled;
208 };
209 
210 static void encrypt_callback(void *priv, u8 *srcdst, unsigned int nbytes)
211 {
212 	const unsigned int bsize = CAMELLIA_BLOCK_SIZE;
213 	struct crypt_priv *ctx = priv;
214 	int i;
215 
216 	ctx->fpu_enabled = camellia_fpu_begin(ctx->fpu_enabled, nbytes);
217 
218 	if (nbytes >= CAMELLIA_AESNI_AVX2_PARALLEL_BLOCKS * bsize) {
219 		camellia_ecb_enc_32way(ctx->ctx, srcdst, srcdst);
220 		srcdst += bsize * CAMELLIA_AESNI_AVX2_PARALLEL_BLOCKS;
221 		nbytes -= bsize * CAMELLIA_AESNI_AVX2_PARALLEL_BLOCKS;
222 	}
223 
224 	if (nbytes >= CAMELLIA_AESNI_PARALLEL_BLOCKS * bsize) {
225 		camellia_ecb_enc_16way(ctx->ctx, srcdst, srcdst);
226 		srcdst += bsize * CAMELLIA_AESNI_PARALLEL_BLOCKS;
227 		nbytes -= bsize * CAMELLIA_AESNI_PARALLEL_BLOCKS;
228 	}
229 
230 	while (nbytes >= CAMELLIA_PARALLEL_BLOCKS * bsize) {
231 		camellia_enc_blk_2way(ctx->ctx, srcdst, srcdst);
232 		srcdst += bsize * CAMELLIA_PARALLEL_BLOCKS;
233 		nbytes -= bsize * CAMELLIA_PARALLEL_BLOCKS;
234 	}
235 
236 	for (i = 0; i < nbytes / bsize; i++, srcdst += bsize)
237 		camellia_enc_blk(ctx->ctx, srcdst, srcdst);
238 }
239 
240 static void decrypt_callback(void *priv, u8 *srcdst, unsigned int nbytes)
241 {
242 	const unsigned int bsize = CAMELLIA_BLOCK_SIZE;
243 	struct crypt_priv *ctx = priv;
244 	int i;
245 
246 	ctx->fpu_enabled = camellia_fpu_begin(ctx->fpu_enabled, nbytes);
247 
248 	if (nbytes >= CAMELLIA_AESNI_AVX2_PARALLEL_BLOCKS * bsize) {
249 		camellia_ecb_dec_32way(ctx->ctx, srcdst, srcdst);
250 		srcdst += bsize * CAMELLIA_AESNI_AVX2_PARALLEL_BLOCKS;
251 		nbytes -= bsize * CAMELLIA_AESNI_AVX2_PARALLEL_BLOCKS;
252 	}
253 
254 	if (nbytes >= CAMELLIA_AESNI_PARALLEL_BLOCKS * bsize) {
255 		camellia_ecb_dec_16way(ctx->ctx, srcdst, srcdst);
256 		srcdst += bsize * CAMELLIA_AESNI_PARALLEL_BLOCKS;
257 		nbytes -= bsize * CAMELLIA_AESNI_PARALLEL_BLOCKS;
258 	}
259 
260 	while (nbytes >= CAMELLIA_PARALLEL_BLOCKS * bsize) {
261 		camellia_dec_blk_2way(ctx->ctx, srcdst, srcdst);
262 		srcdst += bsize * CAMELLIA_PARALLEL_BLOCKS;
263 		nbytes -= bsize * CAMELLIA_PARALLEL_BLOCKS;
264 	}
265 
266 	for (i = 0; i < nbytes / bsize; i++, srcdst += bsize)
267 		camellia_dec_blk(ctx->ctx, srcdst, srcdst);
268 }
269 
270 static int lrw_encrypt(struct blkcipher_desc *desc, struct scatterlist *dst,
271 		       struct scatterlist *src, unsigned int nbytes)
272 {
273 	struct camellia_lrw_ctx *ctx = crypto_blkcipher_ctx(desc->tfm);
274 	be128 buf[CAMELLIA_AESNI_AVX2_PARALLEL_BLOCKS];
275 	struct crypt_priv crypt_ctx = {
276 		.ctx = &ctx->camellia_ctx,
277 		.fpu_enabled = false,
278 	};
279 	struct lrw_crypt_req req = {
280 		.tbuf = buf,
281 		.tbuflen = sizeof(buf),
282 
283 		.table_ctx = &ctx->lrw_table,
284 		.crypt_ctx = &crypt_ctx,
285 		.crypt_fn = encrypt_callback,
286 	};
287 	int ret;
288 
289 	desc->flags &= ~CRYPTO_TFM_REQ_MAY_SLEEP;
290 	ret = lrw_crypt(desc, dst, src, nbytes, &req);
291 	camellia_fpu_end(crypt_ctx.fpu_enabled);
292 
293 	return ret;
294 }
295 
296 static int lrw_decrypt(struct blkcipher_desc *desc, struct scatterlist *dst,
297 		       struct scatterlist *src, unsigned int nbytes)
298 {
299 	struct camellia_lrw_ctx *ctx = crypto_blkcipher_ctx(desc->tfm);
300 	be128 buf[CAMELLIA_AESNI_AVX2_PARALLEL_BLOCKS];
301 	struct crypt_priv crypt_ctx = {
302 		.ctx = &ctx->camellia_ctx,
303 		.fpu_enabled = false,
304 	};
305 	struct lrw_crypt_req req = {
306 		.tbuf = buf,
307 		.tbuflen = sizeof(buf),
308 
309 		.table_ctx = &ctx->lrw_table,
310 		.crypt_ctx = &crypt_ctx,
311 		.crypt_fn = decrypt_callback,
312 	};
313 	int ret;
314 
315 	desc->flags &= ~CRYPTO_TFM_REQ_MAY_SLEEP;
316 	ret = lrw_crypt(desc, dst, src, nbytes, &req);
317 	camellia_fpu_end(crypt_ctx.fpu_enabled);
318 
319 	return ret;
320 }
321 
322 static int xts_encrypt(struct blkcipher_desc *desc, struct scatterlist *dst,
323 		       struct scatterlist *src, unsigned int nbytes)
324 {
325 	struct camellia_xts_ctx *ctx = crypto_blkcipher_ctx(desc->tfm);
326 
327 	return glue_xts_crypt_128bit(&camellia_enc_xts, desc, dst, src, nbytes,
328 				     XTS_TWEAK_CAST(camellia_enc_blk),
329 				     &ctx->tweak_ctx, &ctx->crypt_ctx);
330 }
331 
332 static int xts_decrypt(struct blkcipher_desc *desc, struct scatterlist *dst,
333 		       struct scatterlist *src, unsigned int nbytes)
334 {
335 	struct camellia_xts_ctx *ctx = crypto_blkcipher_ctx(desc->tfm);
336 
337 	return glue_xts_crypt_128bit(&camellia_dec_xts, desc, dst, src, nbytes,
338 				     XTS_TWEAK_CAST(camellia_enc_blk),
339 				     &ctx->tweak_ctx, &ctx->crypt_ctx);
340 }
341 
342 static struct crypto_alg cmll_algs[10] = { {
343 	.cra_name		= "__ecb-camellia-aesni-avx2",
344 	.cra_driver_name	= "__driver-ecb-camellia-aesni-avx2",
345 	.cra_priority		= 0,
346 	.cra_flags		= CRYPTO_ALG_TYPE_BLKCIPHER,
347 	.cra_blocksize		= CAMELLIA_BLOCK_SIZE,
348 	.cra_ctxsize		= sizeof(struct camellia_ctx),
349 	.cra_alignmask		= 0,
350 	.cra_type		= &crypto_blkcipher_type,
351 	.cra_module		= THIS_MODULE,
352 	.cra_u = {
353 		.blkcipher = {
354 			.min_keysize	= CAMELLIA_MIN_KEY_SIZE,
355 			.max_keysize	= CAMELLIA_MAX_KEY_SIZE,
356 			.setkey		= camellia_setkey,
357 			.encrypt	= ecb_encrypt,
358 			.decrypt	= ecb_decrypt,
359 		},
360 	},
361 }, {
362 	.cra_name		= "__cbc-camellia-aesni-avx2",
363 	.cra_driver_name	= "__driver-cbc-camellia-aesni-avx2",
364 	.cra_priority		= 0,
365 	.cra_flags		= CRYPTO_ALG_TYPE_BLKCIPHER,
366 	.cra_blocksize		= CAMELLIA_BLOCK_SIZE,
367 	.cra_ctxsize		= sizeof(struct camellia_ctx),
368 	.cra_alignmask		= 0,
369 	.cra_type		= &crypto_blkcipher_type,
370 	.cra_module		= THIS_MODULE,
371 	.cra_u = {
372 		.blkcipher = {
373 			.min_keysize	= CAMELLIA_MIN_KEY_SIZE,
374 			.max_keysize	= CAMELLIA_MAX_KEY_SIZE,
375 			.setkey		= camellia_setkey,
376 			.encrypt	= cbc_encrypt,
377 			.decrypt	= cbc_decrypt,
378 		},
379 	},
380 }, {
381 	.cra_name		= "__ctr-camellia-aesni-avx2",
382 	.cra_driver_name	= "__driver-ctr-camellia-aesni-avx2",
383 	.cra_priority		= 0,
384 	.cra_flags		= CRYPTO_ALG_TYPE_BLKCIPHER,
385 	.cra_blocksize		= 1,
386 	.cra_ctxsize		= sizeof(struct camellia_ctx),
387 	.cra_alignmask		= 0,
388 	.cra_type		= &crypto_blkcipher_type,
389 	.cra_module		= THIS_MODULE,
390 	.cra_u = {
391 		.blkcipher = {
392 			.min_keysize	= CAMELLIA_MIN_KEY_SIZE,
393 			.max_keysize	= CAMELLIA_MAX_KEY_SIZE,
394 			.ivsize		= CAMELLIA_BLOCK_SIZE,
395 			.setkey		= camellia_setkey,
396 			.encrypt	= ctr_crypt,
397 			.decrypt	= ctr_crypt,
398 		},
399 	},
400 }, {
401 	.cra_name		= "__lrw-camellia-aesni-avx2",
402 	.cra_driver_name	= "__driver-lrw-camellia-aesni-avx2",
403 	.cra_priority		= 0,
404 	.cra_flags		= CRYPTO_ALG_TYPE_BLKCIPHER,
405 	.cra_blocksize		= CAMELLIA_BLOCK_SIZE,
406 	.cra_ctxsize		= sizeof(struct camellia_lrw_ctx),
407 	.cra_alignmask		= 0,
408 	.cra_type		= &crypto_blkcipher_type,
409 	.cra_module		= THIS_MODULE,
410 	.cra_exit		= lrw_camellia_exit_tfm,
411 	.cra_u = {
412 		.blkcipher = {
413 			.min_keysize	= CAMELLIA_MIN_KEY_SIZE +
414 					  CAMELLIA_BLOCK_SIZE,
415 			.max_keysize	= CAMELLIA_MAX_KEY_SIZE +
416 					  CAMELLIA_BLOCK_SIZE,
417 			.ivsize		= CAMELLIA_BLOCK_SIZE,
418 			.setkey		= lrw_camellia_setkey,
419 			.encrypt	= lrw_encrypt,
420 			.decrypt	= lrw_decrypt,
421 		},
422 	},
423 }, {
424 	.cra_name		= "__xts-camellia-aesni-avx2",
425 	.cra_driver_name	= "__driver-xts-camellia-aesni-avx2",
426 	.cra_priority		= 0,
427 	.cra_flags		= CRYPTO_ALG_TYPE_BLKCIPHER,
428 	.cra_blocksize		= CAMELLIA_BLOCK_SIZE,
429 	.cra_ctxsize		= sizeof(struct camellia_xts_ctx),
430 	.cra_alignmask		= 0,
431 	.cra_type		= &crypto_blkcipher_type,
432 	.cra_module		= THIS_MODULE,
433 	.cra_u = {
434 		.blkcipher = {
435 			.min_keysize	= CAMELLIA_MIN_KEY_SIZE * 2,
436 			.max_keysize	= CAMELLIA_MAX_KEY_SIZE * 2,
437 			.ivsize		= CAMELLIA_BLOCK_SIZE,
438 			.setkey		= xts_camellia_setkey,
439 			.encrypt	= xts_encrypt,
440 			.decrypt	= xts_decrypt,
441 		},
442 	},
443 }, {
444 	.cra_name		= "ecb(camellia)",
445 	.cra_driver_name	= "ecb-camellia-aesni-avx2",
446 	.cra_priority		= 500,
447 	.cra_flags		= CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_ASYNC,
448 	.cra_blocksize		= CAMELLIA_BLOCK_SIZE,
449 	.cra_ctxsize		= sizeof(struct async_helper_ctx),
450 	.cra_alignmask		= 0,
451 	.cra_type		= &crypto_ablkcipher_type,
452 	.cra_module		= THIS_MODULE,
453 	.cra_init		= ablk_init,
454 	.cra_exit		= ablk_exit,
455 	.cra_u = {
456 		.ablkcipher = {
457 			.min_keysize	= CAMELLIA_MIN_KEY_SIZE,
458 			.max_keysize	= CAMELLIA_MAX_KEY_SIZE,
459 			.setkey		= ablk_set_key,
460 			.encrypt	= ablk_encrypt,
461 			.decrypt	= ablk_decrypt,
462 		},
463 	},
464 }, {
465 	.cra_name		= "cbc(camellia)",
466 	.cra_driver_name	= "cbc-camellia-aesni-avx2",
467 	.cra_priority		= 500,
468 	.cra_flags		= CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_ASYNC,
469 	.cra_blocksize		= CAMELLIA_BLOCK_SIZE,
470 	.cra_ctxsize		= sizeof(struct async_helper_ctx),
471 	.cra_alignmask		= 0,
472 	.cra_type		= &crypto_ablkcipher_type,
473 	.cra_module		= THIS_MODULE,
474 	.cra_init		= ablk_init,
475 	.cra_exit		= ablk_exit,
476 	.cra_u = {
477 		.ablkcipher = {
478 			.min_keysize	= CAMELLIA_MIN_KEY_SIZE,
479 			.max_keysize	= CAMELLIA_MAX_KEY_SIZE,
480 			.ivsize		= CAMELLIA_BLOCK_SIZE,
481 			.setkey		= ablk_set_key,
482 			.encrypt	= __ablk_encrypt,
483 			.decrypt	= ablk_decrypt,
484 		},
485 	},
486 }, {
487 	.cra_name		= "ctr(camellia)",
488 	.cra_driver_name	= "ctr-camellia-aesni-avx2",
489 	.cra_priority		= 500,
490 	.cra_flags		= CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_ASYNC,
491 	.cra_blocksize		= 1,
492 	.cra_ctxsize		= sizeof(struct async_helper_ctx),
493 	.cra_alignmask		= 0,
494 	.cra_type		= &crypto_ablkcipher_type,
495 	.cra_module		= THIS_MODULE,
496 	.cra_init		= ablk_init,
497 	.cra_exit		= ablk_exit,
498 	.cra_u = {
499 		.ablkcipher = {
500 			.min_keysize	= CAMELLIA_MIN_KEY_SIZE,
501 			.max_keysize	= CAMELLIA_MAX_KEY_SIZE,
502 			.ivsize		= CAMELLIA_BLOCK_SIZE,
503 			.setkey		= ablk_set_key,
504 			.encrypt	= ablk_encrypt,
505 			.decrypt	= ablk_encrypt,
506 			.geniv		= "chainiv",
507 		},
508 	},
509 }, {
510 	.cra_name		= "lrw(camellia)",
511 	.cra_driver_name	= "lrw-camellia-aesni-avx2",
512 	.cra_priority		= 500,
513 	.cra_flags		= CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_ASYNC,
514 	.cra_blocksize		= CAMELLIA_BLOCK_SIZE,
515 	.cra_ctxsize		= sizeof(struct async_helper_ctx),
516 	.cra_alignmask		= 0,
517 	.cra_type		= &crypto_ablkcipher_type,
518 	.cra_module		= THIS_MODULE,
519 	.cra_init		= ablk_init,
520 	.cra_exit		= ablk_exit,
521 	.cra_u = {
522 		.ablkcipher = {
523 			.min_keysize	= CAMELLIA_MIN_KEY_SIZE +
524 					  CAMELLIA_BLOCK_SIZE,
525 			.max_keysize	= CAMELLIA_MAX_KEY_SIZE +
526 					  CAMELLIA_BLOCK_SIZE,
527 			.ivsize		= CAMELLIA_BLOCK_SIZE,
528 			.setkey		= ablk_set_key,
529 			.encrypt	= ablk_encrypt,
530 			.decrypt	= ablk_decrypt,
531 		},
532 	},
533 }, {
534 	.cra_name		= "xts(camellia)",
535 	.cra_driver_name	= "xts-camellia-aesni-avx2",
536 	.cra_priority		= 500,
537 	.cra_flags		= CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_ASYNC,
538 	.cra_blocksize		= CAMELLIA_BLOCK_SIZE,
539 	.cra_ctxsize		= sizeof(struct async_helper_ctx),
540 	.cra_alignmask		= 0,
541 	.cra_type		= &crypto_ablkcipher_type,
542 	.cra_module		= THIS_MODULE,
543 	.cra_init		= ablk_init,
544 	.cra_exit		= ablk_exit,
545 	.cra_u = {
546 		.ablkcipher = {
547 			.min_keysize	= CAMELLIA_MIN_KEY_SIZE * 2,
548 			.max_keysize	= CAMELLIA_MAX_KEY_SIZE * 2,
549 			.ivsize		= CAMELLIA_BLOCK_SIZE,
550 			.setkey		= ablk_set_key,
551 			.encrypt	= ablk_encrypt,
552 			.decrypt	= ablk_decrypt,
553 		},
554 	},
555 } };
556 
557 static int __init camellia_aesni_init(void)
558 {
559 	u64 xcr0;
560 
561 	if (!cpu_has_avx2 || !cpu_has_avx || !cpu_has_aes || !cpu_has_osxsave) {
562 		pr_info("AVX2 or AES-NI instructions are not detected.\n");
563 		return -ENODEV;
564 	}
565 
566 	xcr0 = xgetbv(XCR_XFEATURE_ENABLED_MASK);
567 	if ((xcr0 & (XSTATE_SSE | XSTATE_YMM)) != (XSTATE_SSE | XSTATE_YMM)) {
568 		pr_info("AVX2 detected but unusable.\n");
569 		return -ENODEV;
570 	}
571 
572 	return crypto_register_algs(cmll_algs, ARRAY_SIZE(cmll_algs));
573 }
574 
575 static void __exit camellia_aesni_fini(void)
576 {
577 	crypto_unregister_algs(cmll_algs, ARRAY_SIZE(cmll_algs));
578 }
579 
580 module_init(camellia_aesni_init);
581 module_exit(camellia_aesni_fini);
582 
583 MODULE_LICENSE("GPL");
584 MODULE_DESCRIPTION("Camellia Cipher Algorithm, AES-NI/AVX2 optimized");
585 MODULE_ALIAS("camellia");
586 MODULE_ALIAS("camellia-asm");
587