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_skcipher_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_skcipher_req_iter_init(struct mv_cesa_skcipher_dma_iter *iter,
43 struct skcipher_request *req)
45 mv_cesa_req_dma_iter_init(&iter->base, req->cryptlen);
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_skcipher_req_iter_next_op(struct mv_cesa_skcipher_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_skcipher_dma_cleanup(struct skcipher_request *req)
62 struct mv_cesa_skcipher_req *creq = skcipher_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_skcipher_cleanup(struct skcipher_request *req)
78 struct mv_cesa_skcipher_req *creq = skcipher_request_ctx(req);
80 if (mv_cesa_req_get_type(&creq->base) == CESA_DMA_REQ)
81 mv_cesa_skcipher_dma_cleanup(req);
84 static void mv_cesa_skcipher_std_step(struct skcipher_request *req)
86 struct mv_cesa_skcipher_req *creq = skcipher_request_ctx(req);
87 struct mv_cesa_skcipher_std_req *sreq = &creq->std;
88 struct mv_cesa_engine *engine = creq->base.engine;
89 size_t len = min_t(size_t, req->cryptlen - 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_skcipher_std_process(struct skcipher_request *req,
120 struct mv_cesa_skcipher_req *creq = skcipher_request_ctx(req);
121 struct mv_cesa_skcipher_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->cryptlen)
136 static int mv_cesa_skcipher_process(struct crypto_async_request *req,
139 struct skcipher_request *skreq = skcipher_request_cast(req);
140 struct mv_cesa_skcipher_req *creq = skcipher_request_ctx(skreq);
141 struct mv_cesa_req *basereq = &creq->base;
143 if (mv_cesa_req_get_type(basereq) == CESA_STD_REQ)
144 return mv_cesa_skcipher_std_process(skreq, status);
146 return mv_cesa_dma_process(basereq, status);
149 static void mv_cesa_skcipher_step(struct crypto_async_request *req)
151 struct skcipher_request *skreq = skcipher_request_cast(req);
152 struct mv_cesa_skcipher_req *creq = skcipher_request_ctx(skreq);
154 if (mv_cesa_req_get_type(&creq->base) == CESA_DMA_REQ)
155 mv_cesa_dma_step(&creq->base);
157 mv_cesa_skcipher_std_step(skreq);
161 mv_cesa_skcipher_dma_prepare(struct skcipher_request *req)
163 struct mv_cesa_skcipher_req *creq = skcipher_request_ctx(req);
164 struct mv_cesa_req *basereq = &creq->base;
166 mv_cesa_dma_prepare(basereq, basereq->engine);
170 mv_cesa_skcipher_std_prepare(struct skcipher_request *req)
172 struct mv_cesa_skcipher_req *creq = skcipher_request_ctx(req);
173 struct mv_cesa_skcipher_std_req *sreq = &creq->std;
179 static inline void mv_cesa_skcipher_prepare(struct crypto_async_request *req,
180 struct mv_cesa_engine *engine)
182 struct skcipher_request *skreq = skcipher_request_cast(req);
183 struct mv_cesa_skcipher_req *creq = skcipher_request_ctx(skreq);
184 creq->base.engine = engine;
186 if (mv_cesa_req_get_type(&creq->base) == CESA_DMA_REQ)
187 mv_cesa_skcipher_dma_prepare(skreq);
189 mv_cesa_skcipher_std_prepare(skreq);
193 mv_cesa_skcipher_req_cleanup(struct crypto_async_request *req)
195 struct skcipher_request *skreq = skcipher_request_cast(req);
197 mv_cesa_skcipher_cleanup(skreq);
201 mv_cesa_skcipher_complete(struct crypto_async_request *req)
203 struct skcipher_request *skreq = skcipher_request_cast(req);
204 struct mv_cesa_skcipher_req *creq = skcipher_request_ctx(skreq);
205 struct mv_cesa_engine *engine = creq->base.engine;
208 atomic_sub(skreq->cryptlen, &engine->load);
209 ivsize = crypto_skcipher_ivsize(crypto_skcipher_reqtfm(skreq));
211 if (mv_cesa_req_get_type(&creq->base) == CESA_DMA_REQ) {
212 struct mv_cesa_req *basereq;
214 basereq = &creq->base;
215 memcpy(skreq->iv, basereq->chain.last->op->ctx.blkcipher.iv,
218 memcpy_fromio(skreq->iv,
219 engine->sram + CESA_SA_CRYPT_IV_SRAM_OFFSET,
224 static const struct mv_cesa_req_ops mv_cesa_skcipher_req_ops = {
225 .step = mv_cesa_skcipher_step,
226 .process = mv_cesa_skcipher_process,
227 .cleanup = mv_cesa_skcipher_req_cleanup,
228 .complete = mv_cesa_skcipher_complete,
231 static void mv_cesa_skcipher_cra_exit(struct crypto_tfm *tfm)
233 void *ctx = crypto_tfm_ctx(tfm);
235 memzero_explicit(ctx, tfm->__crt_alg->cra_ctxsize);
238 static int mv_cesa_skcipher_cra_init(struct crypto_tfm *tfm)
240 struct mv_cesa_ctx *ctx = crypto_tfm_ctx(tfm);
242 ctx->ops = &mv_cesa_skcipher_req_ops;
244 crypto_skcipher_set_reqsize(__crypto_skcipher_cast(tfm),
245 sizeof(struct mv_cesa_skcipher_req));
250 static int mv_cesa_aes_setkey(struct crypto_skcipher *cipher, const u8 *key,
253 struct crypto_tfm *tfm = crypto_skcipher_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_skcipher_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_skcipher *cipher, const u8 *key,
278 struct crypto_tfm *tfm = crypto_skcipher_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_skcipher_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_skcipher *cipher,
300 const u8 *key, unsigned int len)
302 struct crypto_tfm *tfm = crypto_skcipher_tfm(cipher);
303 struct mv_cesa_des_ctx *ctx = crypto_tfm_ctx(tfm);
305 if (len != DES3_EDE_KEY_SIZE) {
306 crypto_skcipher_set_flags(cipher, CRYPTO_TFM_RES_BAD_KEY_LEN);
310 memcpy(ctx->key, key, DES3_EDE_KEY_SIZE);
315 static int mv_cesa_skcipher_dma_req_init(struct skcipher_request *req,
316 const struct mv_cesa_op_ctx *op_templ)
318 struct mv_cesa_skcipher_req *creq = skcipher_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_skcipher_dma_iter iter;
323 bool skip_ctx = false;
327 basereq->chain.first = NULL;
328 basereq->chain.last = NULL;
330 if (req->src != req->dst) {
331 ret = dma_map_sg(cesa_dev->dev, req->src, creq->src_nents,
336 ret = dma_map_sg(cesa_dev->dev, req->dst, creq->dst_nents,
343 ret = dma_map_sg(cesa_dev->dev, req->src, creq->src_nents,
349 mv_cesa_tdma_desc_iter_init(&basereq->chain);
350 mv_cesa_skcipher_req_iter_init(&iter, req);
353 struct mv_cesa_op_ctx *op;
355 op = mv_cesa_dma_add_op(&basereq->chain, op_templ, skip_ctx, flags);
362 mv_cesa_set_crypt_op_len(op, iter.base.op_len);
364 /* Add input transfers */
365 ret = mv_cesa_dma_add_op_transfers(&basereq->chain, &iter.base,
370 /* Add dummy desc to launch the crypto operation */
371 ret = mv_cesa_dma_add_dummy_launch(&basereq->chain, flags);
375 /* Add output transfers */
376 ret = mv_cesa_dma_add_op_transfers(&basereq->chain, &iter.base,
381 } while (mv_cesa_skcipher_req_iter_next_op(&iter));
383 /* Add output data for IV */
384 ivsize = crypto_skcipher_ivsize(crypto_skcipher_reqtfm(req));
385 ret = mv_cesa_dma_add_result_op(&basereq->chain, CESA_SA_CFG_SRAM_OFFSET,
386 CESA_SA_DATA_SRAM_OFFSET,
387 CESA_TDMA_SRC_IN_SRAM, flags);
392 basereq->chain.last->flags |= CESA_TDMA_END_OF_REQ;
397 mv_cesa_dma_cleanup(basereq);
398 if (req->dst != req->src)
399 dma_unmap_sg(cesa_dev->dev, req->dst, creq->dst_nents,
403 dma_unmap_sg(cesa_dev->dev, req->src, creq->src_nents,
404 req->dst != req->src ? DMA_TO_DEVICE : DMA_BIDIRECTIONAL);
410 mv_cesa_skcipher_std_req_init(struct skcipher_request *req,
411 const struct mv_cesa_op_ctx *op_templ)
413 struct mv_cesa_skcipher_req *creq = skcipher_request_ctx(req);
414 struct mv_cesa_skcipher_std_req *sreq = &creq->std;
415 struct mv_cesa_req *basereq = &creq->base;
417 sreq->op = *op_templ;
418 sreq->skip_ctx = false;
419 basereq->chain.first = NULL;
420 basereq->chain.last = NULL;
425 static int mv_cesa_skcipher_req_init(struct skcipher_request *req,
426 struct mv_cesa_op_ctx *tmpl)
428 struct mv_cesa_skcipher_req *creq = skcipher_request_ctx(req);
429 struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req);
430 unsigned int blksize = crypto_skcipher_blocksize(tfm);
433 if (!IS_ALIGNED(req->cryptlen, blksize))
436 creq->src_nents = sg_nents_for_len(req->src, req->cryptlen);
437 if (creq->src_nents < 0) {
438 dev_err(cesa_dev->dev, "Invalid number of src SG");
439 return creq->src_nents;
441 creq->dst_nents = sg_nents_for_len(req->dst, req->cryptlen);
442 if (creq->dst_nents < 0) {
443 dev_err(cesa_dev->dev, "Invalid number of dst SG");
444 return creq->dst_nents;
447 mv_cesa_update_op_cfg(tmpl, CESA_SA_DESC_CFG_OP_CRYPT_ONLY,
448 CESA_SA_DESC_CFG_OP_MSK);
450 if (cesa_dev->caps->has_tdma)
451 ret = mv_cesa_skcipher_dma_req_init(req, tmpl);
453 ret = mv_cesa_skcipher_std_req_init(req, tmpl);
458 static int mv_cesa_skcipher_queue_req(struct skcipher_request *req,
459 struct mv_cesa_op_ctx *tmpl)
462 struct mv_cesa_skcipher_req *creq = skcipher_request_ctx(req);
463 struct mv_cesa_engine *engine;
465 ret = mv_cesa_skcipher_req_init(req, tmpl);
469 engine = mv_cesa_select_engine(req->cryptlen);
470 mv_cesa_skcipher_prepare(&req->base, engine);
472 ret = mv_cesa_queue_req(&req->base, &creq->base);
474 if (mv_cesa_req_needs_cleanup(&req->base, ret))
475 mv_cesa_skcipher_cleanup(req);
480 static int mv_cesa_des_op(struct skcipher_request *req,
481 struct mv_cesa_op_ctx *tmpl)
483 struct mv_cesa_des_ctx *ctx = crypto_tfm_ctx(req->base.tfm);
485 mv_cesa_update_op_cfg(tmpl, CESA_SA_DESC_CFG_CRYPTM_DES,
486 CESA_SA_DESC_CFG_CRYPTM_MSK);
488 memcpy(tmpl->ctx.blkcipher.key, ctx->key, DES_KEY_SIZE);
490 return mv_cesa_skcipher_queue_req(req, tmpl);
493 static int mv_cesa_ecb_des_encrypt(struct skcipher_request *req)
495 struct mv_cesa_op_ctx tmpl;
497 mv_cesa_set_op_cfg(&tmpl,
498 CESA_SA_DESC_CFG_CRYPTCM_ECB |
499 CESA_SA_DESC_CFG_DIR_ENC);
501 return mv_cesa_des_op(req, &tmpl);
504 static int mv_cesa_ecb_des_decrypt(struct skcipher_request *req)
506 struct mv_cesa_op_ctx tmpl;
508 mv_cesa_set_op_cfg(&tmpl,
509 CESA_SA_DESC_CFG_CRYPTCM_ECB |
510 CESA_SA_DESC_CFG_DIR_DEC);
512 return mv_cesa_des_op(req, &tmpl);
515 struct skcipher_alg mv_cesa_ecb_des_alg = {
516 .setkey = mv_cesa_des_setkey,
517 .encrypt = mv_cesa_ecb_des_encrypt,
518 .decrypt = mv_cesa_ecb_des_decrypt,
519 .min_keysize = DES_KEY_SIZE,
520 .max_keysize = DES_KEY_SIZE,
522 .cra_name = "ecb(des)",
523 .cra_driver_name = "mv-ecb-des",
525 .cra_flags = CRYPTO_ALG_KERN_DRIVER_ONLY | CRYPTO_ALG_ASYNC,
526 .cra_blocksize = DES_BLOCK_SIZE,
527 .cra_ctxsize = sizeof(struct mv_cesa_des_ctx),
529 .cra_module = THIS_MODULE,
530 .cra_init = mv_cesa_skcipher_cra_init,
531 .cra_exit = mv_cesa_skcipher_cra_exit,
535 static int mv_cesa_cbc_des_op(struct skcipher_request *req,
536 struct mv_cesa_op_ctx *tmpl)
538 mv_cesa_update_op_cfg(tmpl, CESA_SA_DESC_CFG_CRYPTCM_CBC,
539 CESA_SA_DESC_CFG_CRYPTCM_MSK);
541 memcpy(tmpl->ctx.blkcipher.iv, req->iv, DES_BLOCK_SIZE);
543 return mv_cesa_des_op(req, tmpl);
546 static int mv_cesa_cbc_des_encrypt(struct skcipher_request *req)
548 struct mv_cesa_op_ctx tmpl;
550 mv_cesa_set_op_cfg(&tmpl, CESA_SA_DESC_CFG_DIR_ENC);
552 return mv_cesa_cbc_des_op(req, &tmpl);
555 static int mv_cesa_cbc_des_decrypt(struct skcipher_request *req)
557 struct mv_cesa_op_ctx tmpl;
559 mv_cesa_set_op_cfg(&tmpl, CESA_SA_DESC_CFG_DIR_DEC);
561 return mv_cesa_cbc_des_op(req, &tmpl);
564 struct skcipher_alg mv_cesa_cbc_des_alg = {
565 .setkey = mv_cesa_des_setkey,
566 .encrypt = mv_cesa_cbc_des_encrypt,
567 .decrypt = mv_cesa_cbc_des_decrypt,
568 .min_keysize = DES_KEY_SIZE,
569 .max_keysize = DES_KEY_SIZE,
570 .ivsize = DES_BLOCK_SIZE,
572 .cra_name = "cbc(des)",
573 .cra_driver_name = "mv-cbc-des",
575 .cra_flags = CRYPTO_ALG_KERN_DRIVER_ONLY | CRYPTO_ALG_ASYNC,
576 .cra_blocksize = DES_BLOCK_SIZE,
577 .cra_ctxsize = sizeof(struct mv_cesa_des_ctx),
579 .cra_module = THIS_MODULE,
580 .cra_init = mv_cesa_skcipher_cra_init,
581 .cra_exit = mv_cesa_skcipher_cra_exit,
585 static int mv_cesa_des3_op(struct skcipher_request *req,
586 struct mv_cesa_op_ctx *tmpl)
588 struct mv_cesa_des3_ctx *ctx = crypto_tfm_ctx(req->base.tfm);
590 mv_cesa_update_op_cfg(tmpl, CESA_SA_DESC_CFG_CRYPTM_3DES,
591 CESA_SA_DESC_CFG_CRYPTM_MSK);
593 memcpy(tmpl->ctx.blkcipher.key, ctx->key, DES3_EDE_KEY_SIZE);
595 return mv_cesa_skcipher_queue_req(req, tmpl);
598 static int mv_cesa_ecb_des3_ede_encrypt(struct skcipher_request *req)
600 struct mv_cesa_op_ctx tmpl;
602 mv_cesa_set_op_cfg(&tmpl,
603 CESA_SA_DESC_CFG_CRYPTCM_ECB |
604 CESA_SA_DESC_CFG_3DES_EDE |
605 CESA_SA_DESC_CFG_DIR_ENC);
607 return mv_cesa_des3_op(req, &tmpl);
610 static int mv_cesa_ecb_des3_ede_decrypt(struct skcipher_request *req)
612 struct mv_cesa_op_ctx tmpl;
614 mv_cesa_set_op_cfg(&tmpl,
615 CESA_SA_DESC_CFG_CRYPTCM_ECB |
616 CESA_SA_DESC_CFG_3DES_EDE |
617 CESA_SA_DESC_CFG_DIR_DEC);
619 return mv_cesa_des3_op(req, &tmpl);
622 struct skcipher_alg mv_cesa_ecb_des3_ede_alg = {
623 .setkey = mv_cesa_des3_ede_setkey,
624 .encrypt = mv_cesa_ecb_des3_ede_encrypt,
625 .decrypt = mv_cesa_ecb_des3_ede_decrypt,
626 .min_keysize = DES3_EDE_KEY_SIZE,
627 .max_keysize = DES3_EDE_KEY_SIZE,
629 .cra_name = "ecb(des3_ede)",
630 .cra_driver_name = "mv-ecb-des3-ede",
632 .cra_flags = CRYPTO_ALG_KERN_DRIVER_ONLY | CRYPTO_ALG_ASYNC,
633 .cra_blocksize = DES3_EDE_BLOCK_SIZE,
634 .cra_ctxsize = sizeof(struct mv_cesa_des3_ctx),
636 .cra_module = THIS_MODULE,
637 .cra_init = mv_cesa_skcipher_cra_init,
638 .cra_exit = mv_cesa_skcipher_cra_exit,
642 static int mv_cesa_cbc_des3_op(struct skcipher_request *req,
643 struct mv_cesa_op_ctx *tmpl)
645 memcpy(tmpl->ctx.blkcipher.iv, req->iv, DES3_EDE_BLOCK_SIZE);
647 return mv_cesa_des3_op(req, tmpl);
650 static int mv_cesa_cbc_des3_ede_encrypt(struct skcipher_request *req)
652 struct mv_cesa_op_ctx tmpl;
654 mv_cesa_set_op_cfg(&tmpl,
655 CESA_SA_DESC_CFG_CRYPTCM_CBC |
656 CESA_SA_DESC_CFG_3DES_EDE |
657 CESA_SA_DESC_CFG_DIR_ENC);
659 return mv_cesa_cbc_des3_op(req, &tmpl);
662 static int mv_cesa_cbc_des3_ede_decrypt(struct skcipher_request *req)
664 struct mv_cesa_op_ctx tmpl;
666 mv_cesa_set_op_cfg(&tmpl,
667 CESA_SA_DESC_CFG_CRYPTCM_CBC |
668 CESA_SA_DESC_CFG_3DES_EDE |
669 CESA_SA_DESC_CFG_DIR_DEC);
671 return mv_cesa_cbc_des3_op(req, &tmpl);
674 struct skcipher_alg mv_cesa_cbc_des3_ede_alg = {
675 .setkey = mv_cesa_des3_ede_setkey,
676 .encrypt = mv_cesa_cbc_des3_ede_encrypt,
677 .decrypt = mv_cesa_cbc_des3_ede_decrypt,
678 .min_keysize = DES3_EDE_KEY_SIZE,
679 .max_keysize = DES3_EDE_KEY_SIZE,
680 .ivsize = DES3_EDE_BLOCK_SIZE,
682 .cra_name = "cbc(des3_ede)",
683 .cra_driver_name = "mv-cbc-des3-ede",
685 .cra_flags = CRYPTO_ALG_KERN_DRIVER_ONLY | CRYPTO_ALG_ASYNC,
686 .cra_blocksize = DES3_EDE_BLOCK_SIZE,
687 .cra_ctxsize = sizeof(struct mv_cesa_des3_ctx),
689 .cra_module = THIS_MODULE,
690 .cra_init = mv_cesa_skcipher_cra_init,
691 .cra_exit = mv_cesa_skcipher_cra_exit,
695 static int mv_cesa_aes_op(struct skcipher_request *req,
696 struct mv_cesa_op_ctx *tmpl)
698 struct mv_cesa_aes_ctx *ctx = crypto_tfm_ctx(req->base.tfm);
703 cfg = CESA_SA_DESC_CFG_CRYPTM_AES;
705 if (mv_cesa_get_op_cfg(tmpl) & CESA_SA_DESC_CFG_DIR_DEC)
706 key = ctx->aes.key_dec;
708 key = ctx->aes.key_enc;
710 for (i = 0; i < ctx->aes.key_length / sizeof(u32); i++)
711 tmpl->ctx.blkcipher.key[i] = cpu_to_le32(key[i]);
713 if (ctx->aes.key_length == 24)
714 cfg |= CESA_SA_DESC_CFG_AES_LEN_192;
715 else if (ctx->aes.key_length == 32)
716 cfg |= CESA_SA_DESC_CFG_AES_LEN_256;
718 mv_cesa_update_op_cfg(tmpl, cfg,
719 CESA_SA_DESC_CFG_CRYPTM_MSK |
720 CESA_SA_DESC_CFG_AES_LEN_MSK);
722 return mv_cesa_skcipher_queue_req(req, tmpl);
725 static int mv_cesa_ecb_aes_encrypt(struct skcipher_request *req)
727 struct mv_cesa_op_ctx tmpl;
729 mv_cesa_set_op_cfg(&tmpl,
730 CESA_SA_DESC_CFG_CRYPTCM_ECB |
731 CESA_SA_DESC_CFG_DIR_ENC);
733 return mv_cesa_aes_op(req, &tmpl);
736 static int mv_cesa_ecb_aes_decrypt(struct skcipher_request *req)
738 struct mv_cesa_op_ctx tmpl;
740 mv_cesa_set_op_cfg(&tmpl,
741 CESA_SA_DESC_CFG_CRYPTCM_ECB |
742 CESA_SA_DESC_CFG_DIR_DEC);
744 return mv_cesa_aes_op(req, &tmpl);
747 struct skcipher_alg mv_cesa_ecb_aes_alg = {
748 .setkey = mv_cesa_aes_setkey,
749 .encrypt = mv_cesa_ecb_aes_encrypt,
750 .decrypt = mv_cesa_ecb_aes_decrypt,
751 .min_keysize = AES_MIN_KEY_SIZE,
752 .max_keysize = AES_MAX_KEY_SIZE,
754 .cra_name = "ecb(aes)",
755 .cra_driver_name = "mv-ecb-aes",
757 .cra_flags = CRYPTO_ALG_KERN_DRIVER_ONLY | CRYPTO_ALG_ASYNC,
758 .cra_blocksize = AES_BLOCK_SIZE,
759 .cra_ctxsize = sizeof(struct mv_cesa_aes_ctx),
761 .cra_module = THIS_MODULE,
762 .cra_init = mv_cesa_skcipher_cra_init,
763 .cra_exit = mv_cesa_skcipher_cra_exit,
767 static int mv_cesa_cbc_aes_op(struct skcipher_request *req,
768 struct mv_cesa_op_ctx *tmpl)
770 mv_cesa_update_op_cfg(tmpl, CESA_SA_DESC_CFG_CRYPTCM_CBC,
771 CESA_SA_DESC_CFG_CRYPTCM_MSK);
772 memcpy(tmpl->ctx.blkcipher.iv, req->iv, AES_BLOCK_SIZE);
774 return mv_cesa_aes_op(req, tmpl);
777 static int mv_cesa_cbc_aes_encrypt(struct skcipher_request *req)
779 struct mv_cesa_op_ctx tmpl;
781 mv_cesa_set_op_cfg(&tmpl, CESA_SA_DESC_CFG_DIR_ENC);
783 return mv_cesa_cbc_aes_op(req, &tmpl);
786 static int mv_cesa_cbc_aes_decrypt(struct skcipher_request *req)
788 struct mv_cesa_op_ctx tmpl;
790 mv_cesa_set_op_cfg(&tmpl, CESA_SA_DESC_CFG_DIR_DEC);
792 return mv_cesa_cbc_aes_op(req, &tmpl);
795 struct skcipher_alg mv_cesa_cbc_aes_alg = {
796 .setkey = mv_cesa_aes_setkey,
797 .encrypt = mv_cesa_cbc_aes_encrypt,
798 .decrypt = mv_cesa_cbc_aes_decrypt,
799 .min_keysize = AES_MIN_KEY_SIZE,
800 .max_keysize = AES_MAX_KEY_SIZE,
801 .ivsize = AES_BLOCK_SIZE,
803 .cra_name = "cbc(aes)",
804 .cra_driver_name = "mv-cbc-aes",
806 .cra_flags = CRYPTO_ALG_KERN_DRIVER_ONLY | CRYPTO_ALG_ASYNC,
807 .cra_blocksize = AES_BLOCK_SIZE,
808 .cra_ctxsize = sizeof(struct mv_cesa_aes_ctx),
810 .cra_module = THIS_MODULE,
811 .cra_init = mv_cesa_skcipher_cra_init,
812 .cra_exit = mv_cesa_skcipher_cra_exit,