2 * Cipher algorithms supported by the CESA: DES, 3DES and AES.
4 * Author: Boris Brezillon <boris.brezillon@free-electrons.com>
5 * Author: Arnaud Ebalard <arno@natisbad.org>
7 * This work is based on an initial version written by
8 * Sebastian Andrzej Siewior < sebastian at breakpoint dot cc >
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.
15 #include <crypto/aes.h>
16 #include <crypto/des.h>
20 struct mv_cesa_des_ctx {
21 struct mv_cesa_ctx base;
25 struct mv_cesa_des3_ctx {
26 struct mv_cesa_ctx base;
27 u8 key[DES3_EDE_KEY_SIZE];
30 struct mv_cesa_aes_ctx {
31 struct mv_cesa_ctx base;
32 struct crypto_aes_ctx aes;
35 struct 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;
42 mv_cesa_ablkcipher_req_iter_init(struct mv_cesa_ablkcipher_dma_iter *iter,
43 struct ablkcipher_request *req)
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);
51 mv_cesa_ablkcipher_req_iter_next_op(struct mv_cesa_ablkcipher_dma_iter *iter)
53 iter->src.op_offset = 0;
54 iter->dst.op_offset = 0;
56 return mv_cesa_req_dma_iter_next_op(&iter->base);
60 mv_cesa_ablkcipher_dma_cleanup(struct ablkcipher_request *req)
62 struct mv_cesa_ablkcipher_req *creq = ablkcipher_request_ctx(req);
64 if (req->dst != req->src) {
65 dma_unmap_sg(cesa_dev->dev, req->dst, creq->dst_nents,
67 dma_unmap_sg(cesa_dev->dev, req->src, creq->src_nents,
70 dma_unmap_sg(cesa_dev->dev, req->src, creq->src_nents,
73 mv_cesa_dma_cleanup(&creq->base);
76 static inline void mv_cesa_ablkcipher_cleanup(struct ablkcipher_request *req)
78 struct mv_cesa_ablkcipher_req *creq = ablkcipher_request_ctx(req);
80 if (mv_cesa_req_get_type(&creq->base) == CESA_DMA_REQ)
81 mv_cesa_ablkcipher_dma_cleanup(req);
84 static void mv_cesa_ablkcipher_std_step(struct ablkcipher_request *req)
86 struct mv_cesa_ablkcipher_req *creq = ablkcipher_request_ctx(req);
87 struct mv_cesa_ablkcipher_std_req *sreq = &creq->std;
88 struct mv_cesa_engine *engine = creq->base.engine;
89 size_t len = min_t(size_t, req->nbytes - sreq->offset,
90 CESA_SA_SRAM_PAYLOAD_SIZE);
92 mv_cesa_adjust_op(engine, &sreq->op);
93 memcpy_toio(engine->sram, &sreq->op, sizeof(sreq->op));
95 len = sg_pcopy_to_buffer(req->src, creq->src_nents,
96 engine->sram + CESA_SA_DATA_SRAM_OFFSET,
100 mv_cesa_set_crypt_op_len(&sreq->op, len);
102 /* FIXME: only update enc_len field */
103 if (!sreq->skip_ctx) {
104 memcpy_toio(engine->sram, &sreq->op, sizeof(sreq->op));
105 sreq->skip_ctx = true;
107 memcpy_toio(engine->sram, &sreq->op, sizeof(sreq->op.desc));
110 mv_cesa_set_int_mask(engine, CESA_SA_INT_ACCEL0_DONE);
111 writel_relaxed(CESA_SA_CFG_PARA_DIS, engine->regs + CESA_SA_CFG);
112 BUG_ON(readl(engine->regs + CESA_SA_CMD) &
113 CESA_SA_CMD_EN_CESA_SA_ACCL0);
114 writel(CESA_SA_CMD_EN_CESA_SA_ACCL0, engine->regs + CESA_SA_CMD);
117 static int mv_cesa_ablkcipher_std_process(struct ablkcipher_request *req,
120 struct mv_cesa_ablkcipher_req *creq = ablkcipher_request_ctx(req);
121 struct mv_cesa_ablkcipher_std_req *sreq = &creq->std;
122 struct mv_cesa_engine *engine = creq->base.engine;
125 len = sg_pcopy_from_buffer(req->dst, creq->dst_nents,
126 engine->sram + CESA_SA_DATA_SRAM_OFFSET,
127 sreq->size, sreq->offset);
130 if (sreq->offset < req->nbytes)
136 static int mv_cesa_ablkcipher_process(struct crypto_async_request *req,
139 struct ablkcipher_request *ablkreq = ablkcipher_request_cast(req);
140 struct mv_cesa_ablkcipher_req *creq = ablkcipher_request_ctx(ablkreq);
141 struct mv_cesa_req *basereq = &creq->base;
145 if (mv_cesa_req_get_type(basereq) == CESA_STD_REQ)
146 return mv_cesa_ablkcipher_std_process(ablkreq, status);
148 ret = mv_cesa_dma_process(basereq, status);
152 ivsize = crypto_ablkcipher_ivsize(crypto_ablkcipher_reqtfm(ablkreq));
153 memcpy_fromio(ablkreq->info, basereq->chain.last->data, ivsize);
158 static void mv_cesa_ablkcipher_step(struct crypto_async_request *req)
160 struct ablkcipher_request *ablkreq = ablkcipher_request_cast(req);
161 struct mv_cesa_ablkcipher_req *creq = ablkcipher_request_ctx(ablkreq);
163 if (mv_cesa_req_get_type(&creq->base) == CESA_DMA_REQ)
164 mv_cesa_dma_step(&creq->base);
166 mv_cesa_ablkcipher_std_step(ablkreq);
170 mv_cesa_ablkcipher_dma_prepare(struct ablkcipher_request *req)
172 struct mv_cesa_ablkcipher_req *creq = ablkcipher_request_ctx(req);
173 struct mv_cesa_req *basereq = &creq->base;
175 mv_cesa_dma_prepare(basereq, basereq->engine);
179 mv_cesa_ablkcipher_std_prepare(struct ablkcipher_request *req)
181 struct mv_cesa_ablkcipher_req *creq = ablkcipher_request_ctx(req);
182 struct mv_cesa_ablkcipher_std_req *sreq = &creq->std;
188 static inline void mv_cesa_ablkcipher_prepare(struct crypto_async_request *req,
189 struct mv_cesa_engine *engine)
191 struct ablkcipher_request *ablkreq = ablkcipher_request_cast(req);
192 struct mv_cesa_ablkcipher_req *creq = ablkcipher_request_ctx(ablkreq);
193 creq->base.engine = engine;
195 if (mv_cesa_req_get_type(&creq->base) == CESA_DMA_REQ)
196 mv_cesa_ablkcipher_dma_prepare(ablkreq);
198 mv_cesa_ablkcipher_std_prepare(ablkreq);
202 mv_cesa_ablkcipher_req_cleanup(struct crypto_async_request *req)
204 struct ablkcipher_request *ablkreq = ablkcipher_request_cast(req);
206 mv_cesa_ablkcipher_cleanup(ablkreq);
210 mv_cesa_ablkcipher_complete(struct crypto_async_request *req)
212 struct ablkcipher_request *ablkreq = ablkcipher_request_cast(req);
213 struct mv_cesa_ablkcipher_req *creq = ablkcipher_request_ctx(ablkreq);
214 struct mv_cesa_engine *engine = creq->base.engine;
217 atomic_sub(ablkreq->nbytes, &engine->load);
218 ivsize = crypto_ablkcipher_ivsize(crypto_ablkcipher_reqtfm(ablkreq));
220 if (mv_cesa_req_get_type(&creq->base) == CESA_DMA_REQ) {
221 struct mv_cesa_req *basereq;
223 basereq = &creq->base;
224 memcpy(ablkreq->info, basereq->chain.last->data, ivsize);
226 memcpy_fromio(ablkreq->info,
227 engine->sram + CESA_SA_CRYPT_IV_SRAM_OFFSET,
232 static const struct mv_cesa_req_ops mv_cesa_ablkcipher_req_ops = {
233 .step = mv_cesa_ablkcipher_step,
234 .process = mv_cesa_ablkcipher_process,
235 .cleanup = mv_cesa_ablkcipher_req_cleanup,
236 .complete = mv_cesa_ablkcipher_complete,
239 static int mv_cesa_ablkcipher_cra_init(struct crypto_tfm *tfm)
241 struct mv_cesa_aes_ctx *ctx = crypto_tfm_ctx(tfm);
243 ctx->base.ops = &mv_cesa_ablkcipher_req_ops;
245 tfm->crt_ablkcipher.reqsize = sizeof(struct mv_cesa_ablkcipher_req);
250 static int mv_cesa_aes_setkey(struct crypto_ablkcipher *cipher, const u8 *key,
253 struct crypto_tfm *tfm = crypto_ablkcipher_tfm(cipher);
254 struct mv_cesa_aes_ctx *ctx = crypto_tfm_ctx(tfm);
260 ret = crypto_aes_expand_key(&ctx->aes, key, len);
262 crypto_ablkcipher_set_flags(cipher, CRYPTO_TFM_RES_BAD_KEY_LEN);
266 remaining = (ctx->aes.key_length - 16) / 4;
267 offset = ctx->aes.key_length + 24 - remaining;
268 for (i = 0; i < remaining; i++)
269 ctx->aes.key_dec[4 + i] =
270 cpu_to_le32(ctx->aes.key_enc[offset + i]);
275 static int mv_cesa_des_setkey(struct crypto_ablkcipher *cipher, const u8 *key,
278 struct crypto_tfm *tfm = crypto_ablkcipher_tfm(cipher);
279 struct mv_cesa_des_ctx *ctx = crypto_tfm_ctx(tfm);
280 u32 tmp[DES_EXPKEY_WORDS];
283 if (len != DES_KEY_SIZE) {
284 crypto_ablkcipher_set_flags(cipher, CRYPTO_TFM_RES_BAD_KEY_LEN);
288 ret = des_ekey(tmp, key);
289 if (!ret && (tfm->crt_flags & CRYPTO_TFM_REQ_WEAK_KEY)) {
290 tfm->crt_flags |= CRYPTO_TFM_RES_WEAK_KEY;
294 memcpy(ctx->key, key, DES_KEY_SIZE);
299 static int mv_cesa_des3_ede_setkey(struct crypto_ablkcipher *cipher,
300 const u8 *key, unsigned int len)
302 struct crypto_tfm *tfm = crypto_ablkcipher_tfm(cipher);
303 struct mv_cesa_des_ctx *ctx = crypto_tfm_ctx(tfm);
305 if (len != DES3_EDE_KEY_SIZE) {
306 crypto_ablkcipher_set_flags(cipher, CRYPTO_TFM_RES_BAD_KEY_LEN);
310 memcpy(ctx->key, key, DES3_EDE_KEY_SIZE);
315 static int mv_cesa_ablkcipher_dma_req_init(struct ablkcipher_request *req,
316 const struct mv_cesa_op_ctx *op_templ)
318 struct mv_cesa_ablkcipher_req *creq = ablkcipher_request_ctx(req);
319 gfp_t flags = (req->base.flags & CRYPTO_TFM_REQ_MAY_SLEEP) ?
320 GFP_KERNEL : GFP_ATOMIC;
321 struct mv_cesa_req *basereq = &creq->base;
322 struct mv_cesa_ablkcipher_dma_iter iter;
323 struct mv_cesa_tdma_chain chain;
324 bool skip_ctx = false;
328 basereq->chain.first = NULL;
329 basereq->chain.last = NULL;
331 if (req->src != req->dst) {
332 ret = dma_map_sg(cesa_dev->dev, req->src, creq->src_nents,
337 ret = dma_map_sg(cesa_dev->dev, req->dst, creq->dst_nents,
344 ret = dma_map_sg(cesa_dev->dev, req->src, creq->src_nents,
350 mv_cesa_tdma_desc_iter_init(&chain);
351 mv_cesa_ablkcipher_req_iter_init(&iter, req);
354 struct mv_cesa_op_ctx *op;
356 op = mv_cesa_dma_add_op(&chain, op_templ, skip_ctx, flags);
363 mv_cesa_set_crypt_op_len(op, iter.base.op_len);
365 /* Add input transfers */
366 ret = mv_cesa_dma_add_op_transfers(&chain, &iter.base,
371 /* Add dummy desc to launch the crypto operation */
372 ret = mv_cesa_dma_add_dummy_launch(&chain, flags);
376 /* Add output transfers */
377 ret = mv_cesa_dma_add_op_transfers(&chain, &iter.base,
382 } while (mv_cesa_ablkcipher_req_iter_next_op(&iter));
384 /* Add output data for IV */
385 ivsize = crypto_ablkcipher_ivsize(crypto_ablkcipher_reqtfm(req));
386 ret = mv_cesa_dma_add_iv_op(&chain, CESA_SA_CRYPT_IV_SRAM_OFFSET,
387 ivsize, CESA_TDMA_SRC_IN_SRAM, flags);
392 basereq->chain = chain;
393 basereq->chain.last->flags |= CESA_TDMA_END_OF_REQ;
398 mv_cesa_dma_cleanup(basereq);
399 if (req->dst != req->src)
400 dma_unmap_sg(cesa_dev->dev, req->dst, creq->dst_nents,
404 dma_unmap_sg(cesa_dev->dev, req->src, creq->src_nents,
405 req->dst != req->src ? DMA_TO_DEVICE : DMA_BIDIRECTIONAL);
411 mv_cesa_ablkcipher_std_req_init(struct ablkcipher_request *req,
412 const struct mv_cesa_op_ctx *op_templ)
414 struct mv_cesa_ablkcipher_req *creq = ablkcipher_request_ctx(req);
415 struct mv_cesa_ablkcipher_std_req *sreq = &creq->std;
416 struct mv_cesa_req *basereq = &creq->base;
418 sreq->op = *op_templ;
419 sreq->skip_ctx = false;
420 basereq->chain.first = NULL;
421 basereq->chain.last = NULL;
426 static int mv_cesa_ablkcipher_req_init(struct ablkcipher_request *req,
427 struct mv_cesa_op_ctx *tmpl)
429 struct mv_cesa_ablkcipher_req *creq = ablkcipher_request_ctx(req);
430 struct crypto_ablkcipher *tfm = crypto_ablkcipher_reqtfm(req);
431 unsigned int blksize = crypto_ablkcipher_blocksize(tfm);
434 if (!IS_ALIGNED(req->nbytes, blksize))
437 creq->src_nents = sg_nents_for_len(req->src, req->nbytes);
438 if (creq->src_nents < 0) {
439 dev_err(cesa_dev->dev, "Invalid number of src SG");
440 return creq->src_nents;
442 creq->dst_nents = sg_nents_for_len(req->dst, req->nbytes);
443 if (creq->dst_nents < 0) {
444 dev_err(cesa_dev->dev, "Invalid number of dst SG");
445 return creq->dst_nents;
448 mv_cesa_update_op_cfg(tmpl, CESA_SA_DESC_CFG_OP_CRYPT_ONLY,
449 CESA_SA_DESC_CFG_OP_MSK);
451 if (cesa_dev->caps->has_tdma)
452 ret = mv_cesa_ablkcipher_dma_req_init(req, tmpl);
454 ret = mv_cesa_ablkcipher_std_req_init(req, tmpl);
459 static int mv_cesa_ablkcipher_queue_req(struct ablkcipher_request *req,
460 struct mv_cesa_op_ctx *tmpl)
463 struct mv_cesa_ablkcipher_req *creq = ablkcipher_request_ctx(req);
464 struct mv_cesa_engine *engine;
466 ret = mv_cesa_ablkcipher_req_init(req, tmpl);
470 engine = mv_cesa_select_engine(req->nbytes);
471 mv_cesa_ablkcipher_prepare(&req->base, engine);
473 ret = mv_cesa_queue_req(&req->base, &creq->base);
475 if (mv_cesa_req_needs_cleanup(&req->base, ret))
476 mv_cesa_ablkcipher_cleanup(req);
481 static int mv_cesa_des_op(struct ablkcipher_request *req,
482 struct mv_cesa_op_ctx *tmpl)
484 struct mv_cesa_des_ctx *ctx = crypto_tfm_ctx(req->base.tfm);
486 mv_cesa_update_op_cfg(tmpl, CESA_SA_DESC_CFG_CRYPTM_DES,
487 CESA_SA_DESC_CFG_CRYPTM_MSK);
489 memcpy(tmpl->ctx.blkcipher.key, ctx->key, DES_KEY_SIZE);
491 return mv_cesa_ablkcipher_queue_req(req, tmpl);
494 static int mv_cesa_ecb_des_encrypt(struct ablkcipher_request *req)
496 struct mv_cesa_op_ctx tmpl;
498 mv_cesa_set_op_cfg(&tmpl,
499 CESA_SA_DESC_CFG_CRYPTCM_ECB |
500 CESA_SA_DESC_CFG_DIR_ENC);
502 return mv_cesa_des_op(req, &tmpl);
505 static int mv_cesa_ecb_des_decrypt(struct ablkcipher_request *req)
507 struct mv_cesa_op_ctx tmpl;
509 mv_cesa_set_op_cfg(&tmpl,
510 CESA_SA_DESC_CFG_CRYPTCM_ECB |
511 CESA_SA_DESC_CFG_DIR_DEC);
513 return mv_cesa_des_op(req, &tmpl);
516 struct crypto_alg mv_cesa_ecb_des_alg = {
517 .cra_name = "ecb(des)",
518 .cra_driver_name = "mv-ecb-des",
520 .cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER |
521 CRYPTO_ALG_KERN_DRIVER_ONLY | CRYPTO_ALG_ASYNC,
522 .cra_blocksize = DES_BLOCK_SIZE,
523 .cra_ctxsize = sizeof(struct mv_cesa_des_ctx),
525 .cra_type = &crypto_ablkcipher_type,
526 .cra_module = THIS_MODULE,
527 .cra_init = mv_cesa_ablkcipher_cra_init,
530 .min_keysize = DES_KEY_SIZE,
531 .max_keysize = DES_KEY_SIZE,
532 .setkey = mv_cesa_des_setkey,
533 .encrypt = mv_cesa_ecb_des_encrypt,
534 .decrypt = mv_cesa_ecb_des_decrypt,
539 static int mv_cesa_cbc_des_op(struct ablkcipher_request *req,
540 struct mv_cesa_op_ctx *tmpl)
542 mv_cesa_update_op_cfg(tmpl, CESA_SA_DESC_CFG_CRYPTCM_CBC,
543 CESA_SA_DESC_CFG_CRYPTCM_MSK);
545 memcpy(tmpl->ctx.blkcipher.iv, req->info, DES_BLOCK_SIZE);
547 return mv_cesa_des_op(req, tmpl);
550 static int mv_cesa_cbc_des_encrypt(struct ablkcipher_request *req)
552 struct mv_cesa_op_ctx tmpl;
554 mv_cesa_set_op_cfg(&tmpl, CESA_SA_DESC_CFG_DIR_ENC);
556 return mv_cesa_cbc_des_op(req, &tmpl);
559 static int mv_cesa_cbc_des_decrypt(struct ablkcipher_request *req)
561 struct mv_cesa_op_ctx tmpl;
563 mv_cesa_set_op_cfg(&tmpl, CESA_SA_DESC_CFG_DIR_DEC);
565 return mv_cesa_cbc_des_op(req, &tmpl);
568 struct crypto_alg mv_cesa_cbc_des_alg = {
569 .cra_name = "cbc(des)",
570 .cra_driver_name = "mv-cbc-des",
572 .cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER |
573 CRYPTO_ALG_KERN_DRIVER_ONLY | CRYPTO_ALG_ASYNC,
574 .cra_blocksize = DES_BLOCK_SIZE,
575 .cra_ctxsize = sizeof(struct mv_cesa_des_ctx),
577 .cra_type = &crypto_ablkcipher_type,
578 .cra_module = THIS_MODULE,
579 .cra_init = mv_cesa_ablkcipher_cra_init,
582 .min_keysize = DES_KEY_SIZE,
583 .max_keysize = DES_KEY_SIZE,
584 .ivsize = DES_BLOCK_SIZE,
585 .setkey = mv_cesa_des_setkey,
586 .encrypt = mv_cesa_cbc_des_encrypt,
587 .decrypt = mv_cesa_cbc_des_decrypt,
592 static int mv_cesa_des3_op(struct ablkcipher_request *req,
593 struct mv_cesa_op_ctx *tmpl)
595 struct mv_cesa_des3_ctx *ctx = crypto_tfm_ctx(req->base.tfm);
597 mv_cesa_update_op_cfg(tmpl, CESA_SA_DESC_CFG_CRYPTM_3DES,
598 CESA_SA_DESC_CFG_CRYPTM_MSK);
600 memcpy(tmpl->ctx.blkcipher.key, ctx->key, DES3_EDE_KEY_SIZE);
602 return mv_cesa_ablkcipher_queue_req(req, tmpl);
605 static int mv_cesa_ecb_des3_ede_encrypt(struct ablkcipher_request *req)
607 struct mv_cesa_op_ctx tmpl;
609 mv_cesa_set_op_cfg(&tmpl,
610 CESA_SA_DESC_CFG_CRYPTCM_ECB |
611 CESA_SA_DESC_CFG_3DES_EDE |
612 CESA_SA_DESC_CFG_DIR_ENC);
614 return mv_cesa_des3_op(req, &tmpl);
617 static int mv_cesa_ecb_des3_ede_decrypt(struct ablkcipher_request *req)
619 struct mv_cesa_op_ctx tmpl;
621 mv_cesa_set_op_cfg(&tmpl,
622 CESA_SA_DESC_CFG_CRYPTCM_ECB |
623 CESA_SA_DESC_CFG_3DES_EDE |
624 CESA_SA_DESC_CFG_DIR_DEC);
626 return mv_cesa_des3_op(req, &tmpl);
629 struct crypto_alg mv_cesa_ecb_des3_ede_alg = {
630 .cra_name = "ecb(des3_ede)",
631 .cra_driver_name = "mv-ecb-des3-ede",
633 .cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER |
634 CRYPTO_ALG_KERN_DRIVER_ONLY | CRYPTO_ALG_ASYNC,
635 .cra_blocksize = DES3_EDE_BLOCK_SIZE,
636 .cra_ctxsize = sizeof(struct mv_cesa_des3_ctx),
638 .cra_type = &crypto_ablkcipher_type,
639 .cra_module = THIS_MODULE,
640 .cra_init = mv_cesa_ablkcipher_cra_init,
643 .min_keysize = DES3_EDE_KEY_SIZE,
644 .max_keysize = DES3_EDE_KEY_SIZE,
645 .ivsize = DES3_EDE_BLOCK_SIZE,
646 .setkey = mv_cesa_des3_ede_setkey,
647 .encrypt = mv_cesa_ecb_des3_ede_encrypt,
648 .decrypt = mv_cesa_ecb_des3_ede_decrypt,
653 static int mv_cesa_cbc_des3_op(struct ablkcipher_request *req,
654 struct mv_cesa_op_ctx *tmpl)
656 memcpy(tmpl->ctx.blkcipher.iv, req->info, DES3_EDE_BLOCK_SIZE);
658 return mv_cesa_des3_op(req, tmpl);
661 static int mv_cesa_cbc_des3_ede_encrypt(struct ablkcipher_request *req)
663 struct mv_cesa_op_ctx tmpl;
665 mv_cesa_set_op_cfg(&tmpl,
666 CESA_SA_DESC_CFG_CRYPTCM_CBC |
667 CESA_SA_DESC_CFG_3DES_EDE |
668 CESA_SA_DESC_CFG_DIR_ENC);
670 return mv_cesa_cbc_des3_op(req, &tmpl);
673 static int mv_cesa_cbc_des3_ede_decrypt(struct ablkcipher_request *req)
675 struct mv_cesa_op_ctx tmpl;
677 mv_cesa_set_op_cfg(&tmpl,
678 CESA_SA_DESC_CFG_CRYPTCM_CBC |
679 CESA_SA_DESC_CFG_3DES_EDE |
680 CESA_SA_DESC_CFG_DIR_DEC);
682 return mv_cesa_cbc_des3_op(req, &tmpl);
685 struct crypto_alg mv_cesa_cbc_des3_ede_alg = {
686 .cra_name = "cbc(des3_ede)",
687 .cra_driver_name = "mv-cbc-des3-ede",
689 .cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER |
690 CRYPTO_ALG_KERN_DRIVER_ONLY | CRYPTO_ALG_ASYNC,
691 .cra_blocksize = DES3_EDE_BLOCK_SIZE,
692 .cra_ctxsize = sizeof(struct mv_cesa_des3_ctx),
694 .cra_type = &crypto_ablkcipher_type,
695 .cra_module = THIS_MODULE,
696 .cra_init = mv_cesa_ablkcipher_cra_init,
699 .min_keysize = DES3_EDE_KEY_SIZE,
700 .max_keysize = DES3_EDE_KEY_SIZE,
701 .ivsize = DES3_EDE_BLOCK_SIZE,
702 .setkey = mv_cesa_des3_ede_setkey,
703 .encrypt = mv_cesa_cbc_des3_ede_encrypt,
704 .decrypt = mv_cesa_cbc_des3_ede_decrypt,
709 static int mv_cesa_aes_op(struct ablkcipher_request *req,
710 struct mv_cesa_op_ctx *tmpl)
712 struct mv_cesa_aes_ctx *ctx = crypto_tfm_ctx(req->base.tfm);
717 cfg = CESA_SA_DESC_CFG_CRYPTM_AES;
719 if (mv_cesa_get_op_cfg(tmpl) & CESA_SA_DESC_CFG_DIR_DEC)
720 key = ctx->aes.key_dec;
722 key = ctx->aes.key_enc;
724 for (i = 0; i < ctx->aes.key_length / sizeof(u32); i++)
725 tmpl->ctx.blkcipher.key[i] = cpu_to_le32(key[i]);
727 if (ctx->aes.key_length == 24)
728 cfg |= CESA_SA_DESC_CFG_AES_LEN_192;
729 else if (ctx->aes.key_length == 32)
730 cfg |= CESA_SA_DESC_CFG_AES_LEN_256;
732 mv_cesa_update_op_cfg(tmpl, cfg,
733 CESA_SA_DESC_CFG_CRYPTM_MSK |
734 CESA_SA_DESC_CFG_AES_LEN_MSK);
736 return mv_cesa_ablkcipher_queue_req(req, tmpl);
739 static int mv_cesa_ecb_aes_encrypt(struct ablkcipher_request *req)
741 struct mv_cesa_op_ctx tmpl;
743 mv_cesa_set_op_cfg(&tmpl,
744 CESA_SA_DESC_CFG_CRYPTCM_ECB |
745 CESA_SA_DESC_CFG_DIR_ENC);
747 return mv_cesa_aes_op(req, &tmpl);
750 static int mv_cesa_ecb_aes_decrypt(struct ablkcipher_request *req)
752 struct mv_cesa_op_ctx tmpl;
754 mv_cesa_set_op_cfg(&tmpl,
755 CESA_SA_DESC_CFG_CRYPTCM_ECB |
756 CESA_SA_DESC_CFG_DIR_DEC);
758 return mv_cesa_aes_op(req, &tmpl);
761 struct crypto_alg mv_cesa_ecb_aes_alg = {
762 .cra_name = "ecb(aes)",
763 .cra_driver_name = "mv-ecb-aes",
765 .cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER |
766 CRYPTO_ALG_KERN_DRIVER_ONLY | CRYPTO_ALG_ASYNC,
767 .cra_blocksize = AES_BLOCK_SIZE,
768 .cra_ctxsize = sizeof(struct mv_cesa_aes_ctx),
770 .cra_type = &crypto_ablkcipher_type,
771 .cra_module = THIS_MODULE,
772 .cra_init = mv_cesa_ablkcipher_cra_init,
775 .min_keysize = AES_MIN_KEY_SIZE,
776 .max_keysize = AES_MAX_KEY_SIZE,
777 .setkey = mv_cesa_aes_setkey,
778 .encrypt = mv_cesa_ecb_aes_encrypt,
779 .decrypt = mv_cesa_ecb_aes_decrypt,
784 static int mv_cesa_cbc_aes_op(struct ablkcipher_request *req,
785 struct mv_cesa_op_ctx *tmpl)
787 mv_cesa_update_op_cfg(tmpl, CESA_SA_DESC_CFG_CRYPTCM_CBC,
788 CESA_SA_DESC_CFG_CRYPTCM_MSK);
789 memcpy(tmpl->ctx.blkcipher.iv, req->info, AES_BLOCK_SIZE);
791 return mv_cesa_aes_op(req, tmpl);
794 static int mv_cesa_cbc_aes_encrypt(struct ablkcipher_request *req)
796 struct mv_cesa_op_ctx tmpl;
798 mv_cesa_set_op_cfg(&tmpl, CESA_SA_DESC_CFG_DIR_ENC);
800 return mv_cesa_cbc_aes_op(req, &tmpl);
803 static int mv_cesa_cbc_aes_decrypt(struct ablkcipher_request *req)
805 struct mv_cesa_op_ctx tmpl;
807 mv_cesa_set_op_cfg(&tmpl, CESA_SA_DESC_CFG_DIR_DEC);
809 return mv_cesa_cbc_aes_op(req, &tmpl);
812 struct crypto_alg mv_cesa_cbc_aes_alg = {
813 .cra_name = "cbc(aes)",
814 .cra_driver_name = "mv-cbc-aes",
816 .cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER |
817 CRYPTO_ALG_KERN_DRIVER_ONLY | CRYPTO_ALG_ASYNC,
818 .cra_blocksize = AES_BLOCK_SIZE,
819 .cra_ctxsize = sizeof(struct mv_cesa_aes_ctx),
821 .cra_type = &crypto_ablkcipher_type,
822 .cra_module = THIS_MODULE,
823 .cra_init = mv_cesa_ablkcipher_cra_init,
826 .min_keysize = AES_MIN_KEY_SIZE,
827 .max_keysize = AES_MAX_KEY_SIZE,
828 .ivsize = AES_BLOCK_SIZE,
829 .setkey = mv_cesa_aes_setkey,
830 .encrypt = mv_cesa_cbc_aes_encrypt,
831 .decrypt = mv_cesa_cbc_aes_decrypt,