Linux kernel mirror (for testing)
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linux
1/*
2 * Cipher algorithms supported by the CESA: DES, 3DES and AES.
3 *
4 * Author: Boris Brezillon <boris.brezillon@free-electrons.com>
5 * Author: Arnaud Ebalard <arno@natisbad.org>
6 *
7 * This work is based on an initial version written by
8 * Sebastian Andrzej Siewior < sebastian at breakpoint dot cc >
9 *
10 * This program is free software; you can redistribute it and/or modify it
11 * under the terms of the GNU General Public License version 2 as published
12 * by the Free Software Foundation.
13 */
14
15#include <crypto/aes.h>
16#include <crypto/des.h>
17
18#include "cesa.h"
19
20struct mv_cesa_des_ctx {
21 struct mv_cesa_ctx base;
22 u8 key[DES_KEY_SIZE];
23};
24
25struct mv_cesa_des3_ctx {
26 struct mv_cesa_ctx base;
27 u8 key[DES3_EDE_KEY_SIZE];
28};
29
30struct mv_cesa_aes_ctx {
31 struct mv_cesa_ctx base;
32 struct crypto_aes_ctx aes;
33};
34
35struct mv_cesa_ablkcipher_dma_iter {
36 struct mv_cesa_dma_iter base;
37 struct mv_cesa_sg_dma_iter src;
38 struct mv_cesa_sg_dma_iter dst;
39};
40
41static inline void
42mv_cesa_ablkcipher_req_iter_init(struct mv_cesa_ablkcipher_dma_iter *iter,
43 struct ablkcipher_request *req)
44{
45 mv_cesa_req_dma_iter_init(&iter->base, req->nbytes);
46 mv_cesa_sg_dma_iter_init(&iter->src, req->src, DMA_TO_DEVICE);
47 mv_cesa_sg_dma_iter_init(&iter->dst, req->dst, DMA_FROM_DEVICE);
48}
49
50static inline bool
51mv_cesa_ablkcipher_req_iter_next_op(struct mv_cesa_ablkcipher_dma_iter *iter)
52{
53 iter->src.op_offset = 0;
54 iter->dst.op_offset = 0;
55
56 return mv_cesa_req_dma_iter_next_op(&iter->base);
57}
58
59static inline void
60mv_cesa_ablkcipher_dma_cleanup(struct ablkcipher_request *req)
61{
62 struct mv_cesa_ablkcipher_req *creq = ablkcipher_request_ctx(req);
63
64 if (req->dst != req->src) {
65 dma_unmap_sg(cesa_dev->dev, req->dst, creq->dst_nents,
66 DMA_FROM_DEVICE);
67 dma_unmap_sg(cesa_dev->dev, req->src, creq->src_nents,
68 DMA_TO_DEVICE);
69 } else {
70 dma_unmap_sg(cesa_dev->dev, req->src, creq->src_nents,
71 DMA_BIDIRECTIONAL);
72 }
73 mv_cesa_dma_cleanup(&creq->req.dma);
74}
75
76static inline void mv_cesa_ablkcipher_cleanup(struct ablkcipher_request *req)
77{
78 struct mv_cesa_ablkcipher_req *creq = ablkcipher_request_ctx(req);
79
80 if (creq->req.base.type == CESA_DMA_REQ)
81 mv_cesa_ablkcipher_dma_cleanup(req);
82}
83
84static void mv_cesa_ablkcipher_std_step(struct ablkcipher_request *req)
85{
86 struct mv_cesa_ablkcipher_req *creq = ablkcipher_request_ctx(req);
87 struct mv_cesa_ablkcipher_std_req *sreq = &creq->req.std;
88 struct mv_cesa_engine *engine = sreq->base.engine;
89 size_t len = min_t(size_t, req->nbytes - sreq->offset,
90 CESA_SA_SRAM_PAYLOAD_SIZE);
91
92 len = sg_pcopy_to_buffer(req->src, creq->src_nents,
93 engine->sram + CESA_SA_DATA_SRAM_OFFSET,
94 len, sreq->offset);
95
96 sreq->size = len;
97 mv_cesa_set_crypt_op_len(&sreq->op, len);
98
99 /* FIXME: only update enc_len field */
100 if (!sreq->skip_ctx) {
101 memcpy(engine->sram, &sreq->op, sizeof(sreq->op));
102 sreq->skip_ctx = true;
103 } else {
104 memcpy(engine->sram, &sreq->op, sizeof(sreq->op.desc));
105 }
106
107 mv_cesa_set_int_mask(engine, CESA_SA_INT_ACCEL0_DONE);
108 writel(CESA_SA_CFG_PARA_DIS, engine->regs + CESA_SA_CFG);
109 writel(CESA_SA_CMD_EN_CESA_SA_ACCL0, engine->regs + CESA_SA_CMD);
110}
111
112static int mv_cesa_ablkcipher_std_process(struct ablkcipher_request *req,
113 u32 status)
114{
115 struct mv_cesa_ablkcipher_req *creq = ablkcipher_request_ctx(req);
116 struct mv_cesa_ablkcipher_std_req *sreq = &creq->req.std;
117 struct mv_cesa_engine *engine = sreq->base.engine;
118 size_t len;
119
120 len = sg_pcopy_from_buffer(req->dst, creq->dst_nents,
121 engine->sram + CESA_SA_DATA_SRAM_OFFSET,
122 sreq->size, sreq->offset);
123
124 sreq->offset += len;
125 if (sreq->offset < req->nbytes)
126 return -EINPROGRESS;
127
128 return 0;
129}
130
131static int mv_cesa_ablkcipher_process(struct crypto_async_request *req,
132 u32 status)
133{
134 struct ablkcipher_request *ablkreq = ablkcipher_request_cast(req);
135 struct mv_cesa_ablkcipher_req *creq = ablkcipher_request_ctx(ablkreq);
136 struct mv_cesa_ablkcipher_std_req *sreq = &creq->req.std;
137 struct mv_cesa_engine *engine = sreq->base.engine;
138 int ret;
139
140 if (creq->req.base.type == CESA_DMA_REQ)
141 ret = mv_cesa_dma_process(&creq->req.dma, status);
142 else
143 ret = mv_cesa_ablkcipher_std_process(ablkreq, status);
144
145 if (ret)
146 return ret;
147
148 memcpy(ablkreq->info, engine->sram + CESA_SA_CRYPT_IV_SRAM_OFFSET,
149 crypto_ablkcipher_ivsize(crypto_ablkcipher_reqtfm(ablkreq)));
150
151 return 0;
152}
153
154static void mv_cesa_ablkcipher_step(struct crypto_async_request *req)
155{
156 struct ablkcipher_request *ablkreq = ablkcipher_request_cast(req);
157 struct mv_cesa_ablkcipher_req *creq = ablkcipher_request_ctx(ablkreq);
158
159 if (creq->req.base.type == CESA_DMA_REQ)
160 mv_cesa_dma_step(&creq->req.dma);
161 else
162 mv_cesa_ablkcipher_std_step(ablkreq);
163}
164
165static inline void
166mv_cesa_ablkcipher_dma_prepare(struct ablkcipher_request *req)
167{
168 struct mv_cesa_ablkcipher_req *creq = ablkcipher_request_ctx(req);
169 struct mv_cesa_tdma_req *dreq = &creq->req.dma;
170
171 mv_cesa_dma_prepare(dreq, dreq->base.engine);
172}
173
174static inline void
175mv_cesa_ablkcipher_std_prepare(struct ablkcipher_request *req)
176{
177 struct mv_cesa_ablkcipher_req *creq = ablkcipher_request_ctx(req);
178 struct mv_cesa_ablkcipher_std_req *sreq = &creq->req.std;
179 struct mv_cesa_engine *engine = sreq->base.engine;
180
181 sreq->size = 0;
182 sreq->offset = 0;
183 mv_cesa_adjust_op(engine, &sreq->op);
184 memcpy(engine->sram, &sreq->op, sizeof(sreq->op));
185}
186
187static inline void mv_cesa_ablkcipher_prepare(struct crypto_async_request *req,
188 struct mv_cesa_engine *engine)
189{
190 struct ablkcipher_request *ablkreq = ablkcipher_request_cast(req);
191 struct mv_cesa_ablkcipher_req *creq = ablkcipher_request_ctx(ablkreq);
192 creq->req.base.engine = engine;
193
194 if (creq->req.base.type == CESA_DMA_REQ)
195 mv_cesa_ablkcipher_dma_prepare(ablkreq);
196 else
197 mv_cesa_ablkcipher_std_prepare(ablkreq);
198}
199
200static inline void
201mv_cesa_ablkcipher_req_cleanup(struct crypto_async_request *req)
202{
203 struct ablkcipher_request *ablkreq = ablkcipher_request_cast(req);
204
205 mv_cesa_ablkcipher_cleanup(ablkreq);
206}
207
208static const struct mv_cesa_req_ops mv_cesa_ablkcipher_req_ops = {
209 .step = mv_cesa_ablkcipher_step,
210 .process = mv_cesa_ablkcipher_process,
211 .prepare = mv_cesa_ablkcipher_prepare,
212 .cleanup = mv_cesa_ablkcipher_req_cleanup,
213};
214
215static int mv_cesa_ablkcipher_cra_init(struct crypto_tfm *tfm)
216{
217 struct mv_cesa_aes_ctx *ctx = crypto_tfm_ctx(tfm);
218
219 ctx->base.ops = &mv_cesa_ablkcipher_req_ops;
220
221 tfm->crt_ablkcipher.reqsize = sizeof(struct mv_cesa_ablkcipher_req);
222
223 return 0;
224}
225
226static int mv_cesa_aes_setkey(struct crypto_ablkcipher *cipher, const u8 *key,
227 unsigned int len)
228{
229 struct crypto_tfm *tfm = crypto_ablkcipher_tfm(cipher);
230 struct mv_cesa_aes_ctx *ctx = crypto_tfm_ctx(tfm);
231 int remaining;
232 int offset;
233 int ret;
234 int i;
235
236 ret = crypto_aes_expand_key(&ctx->aes, key, len);
237 if (ret) {
238 crypto_ablkcipher_set_flags(cipher, CRYPTO_TFM_RES_BAD_KEY_LEN);
239 return ret;
240 }
241
242 remaining = (ctx->aes.key_length - 16) / 4;
243 offset = ctx->aes.key_length + 24 - remaining;
244 for (i = 0; i < remaining; i++)
245 ctx->aes.key_dec[4 + i] =
246 cpu_to_le32(ctx->aes.key_enc[offset + i]);
247
248 return 0;
249}
250
251static int mv_cesa_des_setkey(struct crypto_ablkcipher *cipher, const u8 *key,
252 unsigned int len)
253{
254 struct crypto_tfm *tfm = crypto_ablkcipher_tfm(cipher);
255 struct mv_cesa_des_ctx *ctx = crypto_tfm_ctx(tfm);
256 u32 tmp[DES_EXPKEY_WORDS];
257 int ret;
258
259 if (len != DES_KEY_SIZE) {
260 crypto_ablkcipher_set_flags(cipher, CRYPTO_TFM_RES_BAD_KEY_LEN);
261 return -EINVAL;
262 }
263
264 ret = des_ekey(tmp, key);
265 if (!ret && (tfm->crt_flags & CRYPTO_TFM_REQ_WEAK_KEY)) {
266 tfm->crt_flags |= CRYPTO_TFM_RES_WEAK_KEY;
267 return -EINVAL;
268 }
269
270 memcpy(ctx->key, key, DES_KEY_SIZE);
271
272 return 0;
273}
274
275static int mv_cesa_des3_ede_setkey(struct crypto_ablkcipher *cipher,
276 const u8 *key, unsigned int len)
277{
278 struct crypto_tfm *tfm = crypto_ablkcipher_tfm(cipher);
279 struct mv_cesa_des_ctx *ctx = crypto_tfm_ctx(tfm);
280
281 if (len != DES3_EDE_KEY_SIZE) {
282 crypto_ablkcipher_set_flags(cipher, CRYPTO_TFM_RES_BAD_KEY_LEN);
283 return -EINVAL;
284 }
285
286 memcpy(ctx->key, key, DES3_EDE_KEY_SIZE);
287
288 return 0;
289}
290
291static int mv_cesa_ablkcipher_dma_req_init(struct ablkcipher_request *req,
292 const struct mv_cesa_op_ctx *op_templ)
293{
294 struct mv_cesa_ablkcipher_req *creq = ablkcipher_request_ctx(req);
295 gfp_t flags = (req->base.flags & CRYPTO_TFM_REQ_MAY_SLEEP) ?
296 GFP_KERNEL : GFP_ATOMIC;
297 struct mv_cesa_tdma_req *dreq = &creq->req.dma;
298 struct mv_cesa_ablkcipher_dma_iter iter;
299 struct mv_cesa_tdma_chain chain;
300 bool skip_ctx = false;
301 int ret;
302
303 dreq->base.type = CESA_DMA_REQ;
304 dreq->chain.first = NULL;
305 dreq->chain.last = NULL;
306
307 if (req->src != req->dst) {
308 ret = dma_map_sg(cesa_dev->dev, req->src, creq->src_nents,
309 DMA_TO_DEVICE);
310 if (!ret)
311 return -ENOMEM;
312
313 ret = dma_map_sg(cesa_dev->dev, req->dst, creq->dst_nents,
314 DMA_FROM_DEVICE);
315 if (!ret) {
316 ret = -ENOMEM;
317 goto err_unmap_src;
318 }
319 } else {
320 ret = dma_map_sg(cesa_dev->dev, req->src, creq->src_nents,
321 DMA_BIDIRECTIONAL);
322 if (!ret)
323 return -ENOMEM;
324 }
325
326 mv_cesa_tdma_desc_iter_init(&chain);
327 mv_cesa_ablkcipher_req_iter_init(&iter, req);
328
329 do {
330 struct mv_cesa_op_ctx *op;
331
332 op = mv_cesa_dma_add_op(&chain, op_templ, skip_ctx, flags);
333 if (IS_ERR(op)) {
334 ret = PTR_ERR(op);
335 goto err_free_tdma;
336 }
337 skip_ctx = true;
338
339 mv_cesa_set_crypt_op_len(op, iter.base.op_len);
340
341 /* Add input transfers */
342 ret = mv_cesa_dma_add_op_transfers(&chain, &iter.base,
343 &iter.src, flags);
344 if (ret)
345 goto err_free_tdma;
346
347 /* Add dummy desc to launch the crypto operation */
348 ret = mv_cesa_dma_add_dummy_launch(&chain, flags);
349 if (ret)
350 goto err_free_tdma;
351
352 /* Add output transfers */
353 ret = mv_cesa_dma_add_op_transfers(&chain, &iter.base,
354 &iter.dst, flags);
355 if (ret)
356 goto err_free_tdma;
357
358 } while (mv_cesa_ablkcipher_req_iter_next_op(&iter));
359
360 dreq->chain = chain;
361
362 return 0;
363
364err_free_tdma:
365 mv_cesa_dma_cleanup(dreq);
366 if (req->dst != req->src)
367 dma_unmap_sg(cesa_dev->dev, req->dst, creq->dst_nents,
368 DMA_FROM_DEVICE);
369
370err_unmap_src:
371 dma_unmap_sg(cesa_dev->dev, req->src, creq->src_nents,
372 req->dst != req->src ? DMA_TO_DEVICE : DMA_BIDIRECTIONAL);
373
374 return ret;
375}
376
377static inline int
378mv_cesa_ablkcipher_std_req_init(struct ablkcipher_request *req,
379 const struct mv_cesa_op_ctx *op_templ)
380{
381 struct mv_cesa_ablkcipher_req *creq = ablkcipher_request_ctx(req);
382 struct mv_cesa_ablkcipher_std_req *sreq = &creq->req.std;
383
384 sreq->base.type = CESA_STD_REQ;
385 sreq->op = *op_templ;
386 sreq->skip_ctx = false;
387
388 return 0;
389}
390
391static int mv_cesa_ablkcipher_req_init(struct ablkcipher_request *req,
392 struct mv_cesa_op_ctx *tmpl)
393{
394 struct mv_cesa_ablkcipher_req *creq = ablkcipher_request_ctx(req);
395 struct crypto_ablkcipher *tfm = crypto_ablkcipher_reqtfm(req);
396 unsigned int blksize = crypto_ablkcipher_blocksize(tfm);
397 int ret;
398
399 if (!IS_ALIGNED(req->nbytes, blksize))
400 return -EINVAL;
401
402 creq->src_nents = sg_nents_for_len(req->src, req->nbytes);
403 creq->dst_nents = sg_nents_for_len(req->dst, req->nbytes);
404
405 mv_cesa_update_op_cfg(tmpl, CESA_SA_DESC_CFG_OP_CRYPT_ONLY,
406 CESA_SA_DESC_CFG_OP_MSK);
407
408 /* TODO: add a threshold for DMA usage */
409 if (cesa_dev->caps->has_tdma)
410 ret = mv_cesa_ablkcipher_dma_req_init(req, tmpl);
411 else
412 ret = mv_cesa_ablkcipher_std_req_init(req, tmpl);
413
414 return ret;
415}
416
417static int mv_cesa_des_op(struct ablkcipher_request *req,
418 struct mv_cesa_op_ctx *tmpl)
419{
420 struct mv_cesa_des_ctx *ctx = crypto_tfm_ctx(req->base.tfm);
421 int ret;
422
423 mv_cesa_update_op_cfg(tmpl, CESA_SA_DESC_CFG_CRYPTM_DES,
424 CESA_SA_DESC_CFG_CRYPTM_MSK);
425
426 memcpy(tmpl->ctx.blkcipher.key, ctx->key, DES_KEY_SIZE);
427
428 ret = mv_cesa_ablkcipher_req_init(req, tmpl);
429 if (ret)
430 return ret;
431
432 ret = mv_cesa_queue_req(&req->base);
433 if (mv_cesa_req_needs_cleanup(&req->base, ret))
434 mv_cesa_ablkcipher_cleanup(req);
435
436 return ret;
437}
438
439static int mv_cesa_ecb_des_encrypt(struct ablkcipher_request *req)
440{
441 struct mv_cesa_op_ctx tmpl;
442
443 mv_cesa_set_op_cfg(&tmpl,
444 CESA_SA_DESC_CFG_CRYPTCM_ECB |
445 CESA_SA_DESC_CFG_DIR_ENC);
446
447 return mv_cesa_des_op(req, &tmpl);
448}
449
450static int mv_cesa_ecb_des_decrypt(struct ablkcipher_request *req)
451{
452 struct mv_cesa_op_ctx tmpl;
453
454 mv_cesa_set_op_cfg(&tmpl,
455 CESA_SA_DESC_CFG_CRYPTCM_ECB |
456 CESA_SA_DESC_CFG_DIR_DEC);
457
458 return mv_cesa_des_op(req, &tmpl);
459}
460
461struct crypto_alg mv_cesa_ecb_des_alg = {
462 .cra_name = "ecb(des)",
463 .cra_driver_name = "mv-ecb-des",
464 .cra_priority = 300,
465 .cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER |
466 CRYPTO_ALG_KERN_DRIVER_ONLY | CRYPTO_ALG_ASYNC,
467 .cra_blocksize = DES_BLOCK_SIZE,
468 .cra_ctxsize = sizeof(struct mv_cesa_des_ctx),
469 .cra_alignmask = 0,
470 .cra_type = &crypto_ablkcipher_type,
471 .cra_module = THIS_MODULE,
472 .cra_init = mv_cesa_ablkcipher_cra_init,
473 .cra_u = {
474 .ablkcipher = {
475 .min_keysize = DES_KEY_SIZE,
476 .max_keysize = DES_KEY_SIZE,
477 .setkey = mv_cesa_des_setkey,
478 .encrypt = mv_cesa_ecb_des_encrypt,
479 .decrypt = mv_cesa_ecb_des_decrypt,
480 },
481 },
482};
483
484static int mv_cesa_cbc_des_op(struct ablkcipher_request *req,
485 struct mv_cesa_op_ctx *tmpl)
486{
487 mv_cesa_update_op_cfg(tmpl, CESA_SA_DESC_CFG_CRYPTCM_CBC,
488 CESA_SA_DESC_CFG_CRYPTCM_MSK);
489
490 memcpy(tmpl->ctx.blkcipher.iv, req->info, DES_BLOCK_SIZE);
491
492 return mv_cesa_des_op(req, tmpl);
493}
494
495static int mv_cesa_cbc_des_encrypt(struct ablkcipher_request *req)
496{
497 struct mv_cesa_op_ctx tmpl;
498
499 mv_cesa_set_op_cfg(&tmpl, CESA_SA_DESC_CFG_DIR_ENC);
500
501 return mv_cesa_cbc_des_op(req, &tmpl);
502}
503
504static int mv_cesa_cbc_des_decrypt(struct ablkcipher_request *req)
505{
506 struct mv_cesa_op_ctx tmpl;
507
508 mv_cesa_set_op_cfg(&tmpl, CESA_SA_DESC_CFG_DIR_DEC);
509
510 return mv_cesa_cbc_des_op(req, &tmpl);
511}
512
513struct crypto_alg mv_cesa_cbc_des_alg = {
514 .cra_name = "cbc(des)",
515 .cra_driver_name = "mv-cbc-des",
516 .cra_priority = 300,
517 .cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER |
518 CRYPTO_ALG_KERN_DRIVER_ONLY | CRYPTO_ALG_ASYNC,
519 .cra_blocksize = DES_BLOCK_SIZE,
520 .cra_ctxsize = sizeof(struct mv_cesa_des_ctx),
521 .cra_alignmask = 0,
522 .cra_type = &crypto_ablkcipher_type,
523 .cra_module = THIS_MODULE,
524 .cra_init = mv_cesa_ablkcipher_cra_init,
525 .cra_u = {
526 .ablkcipher = {
527 .min_keysize = DES_KEY_SIZE,
528 .max_keysize = DES_KEY_SIZE,
529 .ivsize = DES_BLOCK_SIZE,
530 .setkey = mv_cesa_des_setkey,
531 .encrypt = mv_cesa_cbc_des_encrypt,
532 .decrypt = mv_cesa_cbc_des_decrypt,
533 },
534 },
535};
536
537static int mv_cesa_des3_op(struct ablkcipher_request *req,
538 struct mv_cesa_op_ctx *tmpl)
539{
540 struct mv_cesa_des3_ctx *ctx = crypto_tfm_ctx(req->base.tfm);
541 int ret;
542
543 mv_cesa_update_op_cfg(tmpl, CESA_SA_DESC_CFG_CRYPTM_3DES,
544 CESA_SA_DESC_CFG_CRYPTM_MSK);
545
546 memcpy(tmpl->ctx.blkcipher.key, ctx->key, DES3_EDE_KEY_SIZE);
547
548 ret = mv_cesa_ablkcipher_req_init(req, tmpl);
549 if (ret)
550 return ret;
551
552 ret = mv_cesa_queue_req(&req->base);
553 if (mv_cesa_req_needs_cleanup(&req->base, ret))
554 mv_cesa_ablkcipher_cleanup(req);
555
556 return ret;
557}
558
559static int mv_cesa_ecb_des3_ede_encrypt(struct ablkcipher_request *req)
560{
561 struct mv_cesa_op_ctx tmpl;
562
563 mv_cesa_set_op_cfg(&tmpl,
564 CESA_SA_DESC_CFG_CRYPTCM_ECB |
565 CESA_SA_DESC_CFG_3DES_EDE |
566 CESA_SA_DESC_CFG_DIR_ENC);
567
568 return mv_cesa_des3_op(req, &tmpl);
569}
570
571static int mv_cesa_ecb_des3_ede_decrypt(struct ablkcipher_request *req)
572{
573 struct mv_cesa_op_ctx tmpl;
574
575 mv_cesa_set_op_cfg(&tmpl,
576 CESA_SA_DESC_CFG_CRYPTCM_ECB |
577 CESA_SA_DESC_CFG_3DES_EDE |
578 CESA_SA_DESC_CFG_DIR_DEC);
579
580 return mv_cesa_des3_op(req, &tmpl);
581}
582
583struct crypto_alg mv_cesa_ecb_des3_ede_alg = {
584 .cra_name = "ecb(des3_ede)",
585 .cra_driver_name = "mv-ecb-des3-ede",
586 .cra_priority = 300,
587 .cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER |
588 CRYPTO_ALG_KERN_DRIVER_ONLY | CRYPTO_ALG_ASYNC,
589 .cra_blocksize = DES3_EDE_BLOCK_SIZE,
590 .cra_ctxsize = sizeof(struct mv_cesa_des3_ctx),
591 .cra_alignmask = 0,
592 .cra_type = &crypto_ablkcipher_type,
593 .cra_module = THIS_MODULE,
594 .cra_init = mv_cesa_ablkcipher_cra_init,
595 .cra_u = {
596 .ablkcipher = {
597 .min_keysize = DES3_EDE_KEY_SIZE,
598 .max_keysize = DES3_EDE_KEY_SIZE,
599 .ivsize = DES3_EDE_BLOCK_SIZE,
600 .setkey = mv_cesa_des3_ede_setkey,
601 .encrypt = mv_cesa_ecb_des3_ede_encrypt,
602 .decrypt = mv_cesa_ecb_des3_ede_decrypt,
603 },
604 },
605};
606
607static int mv_cesa_cbc_des3_op(struct ablkcipher_request *req,
608 struct mv_cesa_op_ctx *tmpl)
609{
610 memcpy(tmpl->ctx.blkcipher.iv, req->info, DES3_EDE_BLOCK_SIZE);
611
612 return mv_cesa_des3_op(req, tmpl);
613}
614
615static int mv_cesa_cbc_des3_ede_encrypt(struct ablkcipher_request *req)
616{
617 struct mv_cesa_op_ctx tmpl;
618
619 mv_cesa_set_op_cfg(&tmpl,
620 CESA_SA_DESC_CFG_CRYPTCM_CBC |
621 CESA_SA_DESC_CFG_3DES_EDE |
622 CESA_SA_DESC_CFG_DIR_ENC);
623
624 return mv_cesa_cbc_des3_op(req, &tmpl);
625}
626
627static int mv_cesa_cbc_des3_ede_decrypt(struct ablkcipher_request *req)
628{
629 struct mv_cesa_op_ctx tmpl;
630
631 mv_cesa_set_op_cfg(&tmpl,
632 CESA_SA_DESC_CFG_CRYPTCM_CBC |
633 CESA_SA_DESC_CFG_3DES_EDE |
634 CESA_SA_DESC_CFG_DIR_DEC);
635
636 return mv_cesa_cbc_des3_op(req, &tmpl);
637}
638
639struct crypto_alg mv_cesa_cbc_des3_ede_alg = {
640 .cra_name = "cbc(des3_ede)",
641 .cra_driver_name = "mv-cbc-des3-ede",
642 .cra_priority = 300,
643 .cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER |
644 CRYPTO_ALG_KERN_DRIVER_ONLY | CRYPTO_ALG_ASYNC,
645 .cra_blocksize = DES3_EDE_BLOCK_SIZE,
646 .cra_ctxsize = sizeof(struct mv_cesa_des3_ctx),
647 .cra_alignmask = 0,
648 .cra_type = &crypto_ablkcipher_type,
649 .cra_module = THIS_MODULE,
650 .cra_init = mv_cesa_ablkcipher_cra_init,
651 .cra_u = {
652 .ablkcipher = {
653 .min_keysize = DES3_EDE_KEY_SIZE,
654 .max_keysize = DES3_EDE_KEY_SIZE,
655 .ivsize = DES3_EDE_BLOCK_SIZE,
656 .setkey = mv_cesa_des3_ede_setkey,
657 .encrypt = mv_cesa_cbc_des3_ede_encrypt,
658 .decrypt = mv_cesa_cbc_des3_ede_decrypt,
659 },
660 },
661};
662
663static int mv_cesa_aes_op(struct ablkcipher_request *req,
664 struct mv_cesa_op_ctx *tmpl)
665{
666 struct mv_cesa_aes_ctx *ctx = crypto_tfm_ctx(req->base.tfm);
667 int ret, i;
668 u32 *key;
669 u32 cfg;
670
671 cfg = CESA_SA_DESC_CFG_CRYPTM_AES;
672
673 if (mv_cesa_get_op_cfg(tmpl) & CESA_SA_DESC_CFG_DIR_DEC)
674 key = ctx->aes.key_dec;
675 else
676 key = ctx->aes.key_enc;
677
678 for (i = 0; i < ctx->aes.key_length / sizeof(u32); i++)
679 tmpl->ctx.blkcipher.key[i] = cpu_to_le32(key[i]);
680
681 if (ctx->aes.key_length == 24)
682 cfg |= CESA_SA_DESC_CFG_AES_LEN_192;
683 else if (ctx->aes.key_length == 32)
684 cfg |= CESA_SA_DESC_CFG_AES_LEN_256;
685
686 mv_cesa_update_op_cfg(tmpl, cfg,
687 CESA_SA_DESC_CFG_CRYPTM_MSK |
688 CESA_SA_DESC_CFG_AES_LEN_MSK);
689
690 ret = mv_cesa_ablkcipher_req_init(req, tmpl);
691 if (ret)
692 return ret;
693
694 ret = mv_cesa_queue_req(&req->base);
695 if (mv_cesa_req_needs_cleanup(&req->base, ret))
696 mv_cesa_ablkcipher_cleanup(req);
697
698 return ret;
699}
700
701static int mv_cesa_ecb_aes_encrypt(struct ablkcipher_request *req)
702{
703 struct mv_cesa_op_ctx tmpl;
704
705 mv_cesa_set_op_cfg(&tmpl,
706 CESA_SA_DESC_CFG_CRYPTCM_ECB |
707 CESA_SA_DESC_CFG_DIR_ENC);
708
709 return mv_cesa_aes_op(req, &tmpl);
710}
711
712static int mv_cesa_ecb_aes_decrypt(struct ablkcipher_request *req)
713{
714 struct mv_cesa_op_ctx tmpl;
715
716 mv_cesa_set_op_cfg(&tmpl,
717 CESA_SA_DESC_CFG_CRYPTCM_ECB |
718 CESA_SA_DESC_CFG_DIR_DEC);
719
720 return mv_cesa_aes_op(req, &tmpl);
721}
722
723struct crypto_alg mv_cesa_ecb_aes_alg = {
724 .cra_name = "ecb(aes)",
725 .cra_driver_name = "mv-ecb-aes",
726 .cra_priority = 300,
727 .cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER |
728 CRYPTO_ALG_KERN_DRIVER_ONLY | CRYPTO_ALG_ASYNC,
729 .cra_blocksize = AES_BLOCK_SIZE,
730 .cra_ctxsize = sizeof(struct mv_cesa_aes_ctx),
731 .cra_alignmask = 0,
732 .cra_type = &crypto_ablkcipher_type,
733 .cra_module = THIS_MODULE,
734 .cra_init = mv_cesa_ablkcipher_cra_init,
735 .cra_u = {
736 .ablkcipher = {
737 .min_keysize = AES_MIN_KEY_SIZE,
738 .max_keysize = AES_MAX_KEY_SIZE,
739 .setkey = mv_cesa_aes_setkey,
740 .encrypt = mv_cesa_ecb_aes_encrypt,
741 .decrypt = mv_cesa_ecb_aes_decrypt,
742 },
743 },
744};
745
746static int mv_cesa_cbc_aes_op(struct ablkcipher_request *req,
747 struct mv_cesa_op_ctx *tmpl)
748{
749 mv_cesa_update_op_cfg(tmpl, CESA_SA_DESC_CFG_CRYPTCM_CBC,
750 CESA_SA_DESC_CFG_CRYPTCM_MSK);
751 memcpy(tmpl->ctx.blkcipher.iv, req->info, AES_BLOCK_SIZE);
752
753 return mv_cesa_aes_op(req, tmpl);
754}
755
756static int mv_cesa_cbc_aes_encrypt(struct ablkcipher_request *req)
757{
758 struct mv_cesa_op_ctx tmpl;
759
760 mv_cesa_set_op_cfg(&tmpl, CESA_SA_DESC_CFG_DIR_ENC);
761
762 return mv_cesa_cbc_aes_op(req, &tmpl);
763}
764
765static int mv_cesa_cbc_aes_decrypt(struct ablkcipher_request *req)
766{
767 struct mv_cesa_op_ctx tmpl;
768
769 mv_cesa_set_op_cfg(&tmpl, CESA_SA_DESC_CFG_DIR_DEC);
770
771 return mv_cesa_cbc_aes_op(req, &tmpl);
772}
773
774struct crypto_alg mv_cesa_cbc_aes_alg = {
775 .cra_name = "cbc(aes)",
776 .cra_driver_name = "mv-cbc-aes",
777 .cra_priority = 300,
778 .cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER |
779 CRYPTO_ALG_KERN_DRIVER_ONLY | CRYPTO_ALG_ASYNC,
780 .cra_blocksize = AES_BLOCK_SIZE,
781 .cra_ctxsize = sizeof(struct mv_cesa_aes_ctx),
782 .cra_alignmask = 0,
783 .cra_type = &crypto_ablkcipher_type,
784 .cra_module = THIS_MODULE,
785 .cra_init = mv_cesa_ablkcipher_cra_init,
786 .cra_u = {
787 .ablkcipher = {
788 .min_keysize = AES_MIN_KEY_SIZE,
789 .max_keysize = AES_MAX_KEY_SIZE,
790 .ivsize = AES_BLOCK_SIZE,
791 .setkey = mv_cesa_aes_setkey,
792 .encrypt = mv_cesa_cbc_aes_encrypt,
793 .decrypt = mv_cesa_cbc_aes_decrypt,
794 },
795 },
796};