1 // SPDX-License-Identifier: GPL-2.0-only
3 * Cipher algorithms supported by the CESA: DES, 3DES and AES.
5 * Author: Boris Brezillon <boris.brezillon@free-electrons.com>
6 * Author: Arnaud Ebalard <arno@natisbad.org>
8 * This work is based on an initial version written by
9 * Sebastian Andrzej Siewior < sebastian at breakpoint dot cc >
12 #include <crypto/aes.h>
13 #include <crypto/internal/des.h>
17 struct mv_cesa_des_ctx {
18 struct mv_cesa_ctx base;
22 struct mv_cesa_des3_ctx {
23 struct mv_cesa_ctx base;
24 u8 key[DES3_EDE_KEY_SIZE];
27 struct mv_cesa_aes_ctx {
28 struct mv_cesa_ctx base;
29 struct crypto_aes_ctx aes;
32 struct mv_cesa_skcipher_dma_iter {
33 struct mv_cesa_dma_iter base;
34 struct mv_cesa_sg_dma_iter src;
35 struct mv_cesa_sg_dma_iter dst;
39 mv_cesa_skcipher_req_iter_init(struct mv_cesa_skcipher_dma_iter *iter,
40 struct skcipher_request *req)
42 mv_cesa_req_dma_iter_init(&iter->base, req->cryptlen);
43 mv_cesa_sg_dma_iter_init(&iter->src, req->src, DMA_TO_DEVICE);
44 mv_cesa_sg_dma_iter_init(&iter->dst, req->dst, DMA_FROM_DEVICE);
48 mv_cesa_skcipher_req_iter_next_op(struct mv_cesa_skcipher_dma_iter *iter)
50 iter->src.op_offset = 0;
51 iter->dst.op_offset = 0;
53 return mv_cesa_req_dma_iter_next_op(&iter->base);
57 mv_cesa_skcipher_dma_cleanup(struct skcipher_request *req)
59 struct mv_cesa_skcipher_req *creq = skcipher_request_ctx(req);
61 if (req->dst != req->src) {
62 dma_unmap_sg(cesa_dev->dev, req->dst, creq->dst_nents,
64 dma_unmap_sg(cesa_dev->dev, req->src, creq->src_nents,
67 dma_unmap_sg(cesa_dev->dev, req->src, creq->src_nents,
70 mv_cesa_dma_cleanup(&creq->base);
73 static inline void mv_cesa_skcipher_cleanup(struct skcipher_request *req)
75 struct mv_cesa_skcipher_req *creq = skcipher_request_ctx(req);
77 if (mv_cesa_req_get_type(&creq->base) == CESA_DMA_REQ)
78 mv_cesa_skcipher_dma_cleanup(req);
81 static void mv_cesa_skcipher_std_step(struct skcipher_request *req)
83 struct mv_cesa_skcipher_req *creq = skcipher_request_ctx(req);
84 struct mv_cesa_skcipher_std_req *sreq = &creq->std;
85 struct mv_cesa_engine *engine = creq->base.engine;
86 size_t len = min_t(size_t, req->cryptlen - sreq->offset,
87 CESA_SA_SRAM_PAYLOAD_SIZE);
89 mv_cesa_adjust_op(engine, &sreq->op);
90 memcpy_toio(engine->sram, &sreq->op, sizeof(sreq->op));
92 len = sg_pcopy_to_buffer(req->src, creq->src_nents,
93 engine->sram + CESA_SA_DATA_SRAM_OFFSET,
97 mv_cesa_set_crypt_op_len(&sreq->op, len);
99 /* FIXME: only update enc_len field */
100 if (!sreq->skip_ctx) {
101 memcpy_toio(engine->sram, &sreq->op, sizeof(sreq->op));
102 sreq->skip_ctx = true;
104 memcpy_toio(engine->sram, &sreq->op, sizeof(sreq->op.desc));
107 mv_cesa_set_int_mask(engine, CESA_SA_INT_ACCEL0_DONE);
108 writel_relaxed(CESA_SA_CFG_PARA_DIS, engine->regs + CESA_SA_CFG);
109 BUG_ON(readl(engine->regs + CESA_SA_CMD) &
110 CESA_SA_CMD_EN_CESA_SA_ACCL0);
111 writel(CESA_SA_CMD_EN_CESA_SA_ACCL0, engine->regs + CESA_SA_CMD);
114 static int mv_cesa_skcipher_std_process(struct skcipher_request *req,
117 struct mv_cesa_skcipher_req *creq = skcipher_request_ctx(req);
118 struct mv_cesa_skcipher_std_req *sreq = &creq->std;
119 struct mv_cesa_engine *engine = creq->base.engine;
122 len = sg_pcopy_from_buffer(req->dst, creq->dst_nents,
123 engine->sram + CESA_SA_DATA_SRAM_OFFSET,
124 sreq->size, sreq->offset);
127 if (sreq->offset < req->cryptlen)
133 static int mv_cesa_skcipher_process(struct crypto_async_request *req,
136 struct skcipher_request *skreq = skcipher_request_cast(req);
137 struct mv_cesa_skcipher_req *creq = skcipher_request_ctx(skreq);
138 struct mv_cesa_req *basereq = &creq->base;
140 if (mv_cesa_req_get_type(basereq) == CESA_STD_REQ)
141 return mv_cesa_skcipher_std_process(skreq, status);
143 return mv_cesa_dma_process(basereq, status);
146 static void mv_cesa_skcipher_step(struct crypto_async_request *req)
148 struct skcipher_request *skreq = skcipher_request_cast(req);
149 struct mv_cesa_skcipher_req *creq = skcipher_request_ctx(skreq);
151 if (mv_cesa_req_get_type(&creq->base) == CESA_DMA_REQ)
152 mv_cesa_dma_step(&creq->base);
154 mv_cesa_skcipher_std_step(skreq);
158 mv_cesa_skcipher_dma_prepare(struct skcipher_request *req)
160 struct mv_cesa_skcipher_req *creq = skcipher_request_ctx(req);
161 struct mv_cesa_req *basereq = &creq->base;
163 mv_cesa_dma_prepare(basereq, basereq->engine);
167 mv_cesa_skcipher_std_prepare(struct skcipher_request *req)
169 struct mv_cesa_skcipher_req *creq = skcipher_request_ctx(req);
170 struct mv_cesa_skcipher_std_req *sreq = &creq->std;
176 static inline void mv_cesa_skcipher_prepare(struct crypto_async_request *req,
177 struct mv_cesa_engine *engine)
179 struct skcipher_request *skreq = skcipher_request_cast(req);
180 struct mv_cesa_skcipher_req *creq = skcipher_request_ctx(skreq);
181 creq->base.engine = engine;
183 if (mv_cesa_req_get_type(&creq->base) == CESA_DMA_REQ)
184 mv_cesa_skcipher_dma_prepare(skreq);
186 mv_cesa_skcipher_std_prepare(skreq);
190 mv_cesa_skcipher_req_cleanup(struct crypto_async_request *req)
192 struct skcipher_request *skreq = skcipher_request_cast(req);
194 mv_cesa_skcipher_cleanup(skreq);
198 mv_cesa_skcipher_complete(struct crypto_async_request *req)
200 struct skcipher_request *skreq = skcipher_request_cast(req);
201 struct mv_cesa_skcipher_req *creq = skcipher_request_ctx(skreq);
202 struct mv_cesa_engine *engine = creq->base.engine;
205 atomic_sub(skreq->cryptlen, &engine->load);
206 ivsize = crypto_skcipher_ivsize(crypto_skcipher_reqtfm(skreq));
208 if (mv_cesa_req_get_type(&creq->base) == CESA_DMA_REQ) {
209 struct mv_cesa_req *basereq;
211 basereq = &creq->base;
212 memcpy(skreq->iv, basereq->chain.last->op->ctx.skcipher.iv,
215 memcpy_fromio(skreq->iv,
216 engine->sram + CESA_SA_CRYPT_IV_SRAM_OFFSET,
221 static const struct mv_cesa_req_ops mv_cesa_skcipher_req_ops = {
222 .step = mv_cesa_skcipher_step,
223 .process = mv_cesa_skcipher_process,
224 .cleanup = mv_cesa_skcipher_req_cleanup,
225 .complete = mv_cesa_skcipher_complete,
228 static void mv_cesa_skcipher_cra_exit(struct crypto_tfm *tfm)
230 void *ctx = crypto_tfm_ctx(tfm);
232 memzero_explicit(ctx, tfm->__crt_alg->cra_ctxsize);
235 static int mv_cesa_skcipher_cra_init(struct crypto_tfm *tfm)
237 struct mv_cesa_ctx *ctx = crypto_tfm_ctx(tfm);
239 ctx->ops = &mv_cesa_skcipher_req_ops;
241 crypto_skcipher_set_reqsize(__crypto_skcipher_cast(tfm),
242 sizeof(struct mv_cesa_skcipher_req));
247 static int mv_cesa_aes_setkey(struct crypto_skcipher *cipher, const u8 *key,
250 struct crypto_tfm *tfm = crypto_skcipher_tfm(cipher);
251 struct mv_cesa_aes_ctx *ctx = crypto_tfm_ctx(tfm);
257 ret = aes_expandkey(&ctx->aes, key, len);
261 remaining = (ctx->aes.key_length - 16) / 4;
262 offset = ctx->aes.key_length + 24 - remaining;
263 for (i = 0; i < remaining; i++)
264 ctx->aes.key_dec[4 + i] =
265 cpu_to_le32(ctx->aes.key_enc[offset + i]);
270 static int mv_cesa_des_setkey(struct crypto_skcipher *cipher, const u8 *key,
273 struct mv_cesa_des_ctx *ctx = crypto_skcipher_ctx(cipher);
276 err = verify_skcipher_des_key(cipher, key);
280 memcpy(ctx->key, key, DES_KEY_SIZE);
285 static int mv_cesa_des3_ede_setkey(struct crypto_skcipher *cipher,
286 const u8 *key, unsigned int len)
288 struct mv_cesa_des_ctx *ctx = crypto_skcipher_ctx(cipher);
291 err = verify_skcipher_des3_key(cipher, key);
295 memcpy(ctx->key, key, DES3_EDE_KEY_SIZE);
300 static int mv_cesa_skcipher_dma_req_init(struct skcipher_request *req,
301 const struct mv_cesa_op_ctx *op_templ)
303 struct mv_cesa_skcipher_req *creq = skcipher_request_ctx(req);
304 gfp_t flags = (req->base.flags & CRYPTO_TFM_REQ_MAY_SLEEP) ?
305 GFP_KERNEL : GFP_ATOMIC;
306 struct mv_cesa_req *basereq = &creq->base;
307 struct mv_cesa_skcipher_dma_iter iter;
308 bool skip_ctx = false;
311 basereq->chain.first = NULL;
312 basereq->chain.last = NULL;
314 if (req->src != req->dst) {
315 ret = dma_map_sg(cesa_dev->dev, req->src, creq->src_nents,
320 ret = dma_map_sg(cesa_dev->dev, req->dst, creq->dst_nents,
327 ret = dma_map_sg(cesa_dev->dev, req->src, creq->src_nents,
333 mv_cesa_tdma_desc_iter_init(&basereq->chain);
334 mv_cesa_skcipher_req_iter_init(&iter, req);
337 struct mv_cesa_op_ctx *op;
339 op = mv_cesa_dma_add_op(&basereq->chain, op_templ, skip_ctx, flags);
346 mv_cesa_set_crypt_op_len(op, iter.base.op_len);
348 /* Add input transfers */
349 ret = mv_cesa_dma_add_op_transfers(&basereq->chain, &iter.base,
354 /* Add dummy desc to launch the crypto operation */
355 ret = mv_cesa_dma_add_dummy_launch(&basereq->chain, flags);
359 /* Add output transfers */
360 ret = mv_cesa_dma_add_op_transfers(&basereq->chain, &iter.base,
365 } while (mv_cesa_skcipher_req_iter_next_op(&iter));
367 /* Add output data for IV */
368 ret = mv_cesa_dma_add_result_op(&basereq->chain, CESA_SA_CFG_SRAM_OFFSET,
369 CESA_SA_DATA_SRAM_OFFSET,
370 CESA_TDMA_SRC_IN_SRAM, flags);
375 basereq->chain.last->flags |= CESA_TDMA_END_OF_REQ;
380 mv_cesa_dma_cleanup(basereq);
381 if (req->dst != req->src)
382 dma_unmap_sg(cesa_dev->dev, req->dst, creq->dst_nents,
386 dma_unmap_sg(cesa_dev->dev, req->src, creq->src_nents,
387 req->dst != req->src ? DMA_TO_DEVICE : DMA_BIDIRECTIONAL);
393 mv_cesa_skcipher_std_req_init(struct skcipher_request *req,
394 const struct mv_cesa_op_ctx *op_templ)
396 struct mv_cesa_skcipher_req *creq = skcipher_request_ctx(req);
397 struct mv_cesa_skcipher_std_req *sreq = &creq->std;
398 struct mv_cesa_req *basereq = &creq->base;
400 sreq->op = *op_templ;
401 sreq->skip_ctx = false;
402 basereq->chain.first = NULL;
403 basereq->chain.last = NULL;
408 static int mv_cesa_skcipher_req_init(struct skcipher_request *req,
409 struct mv_cesa_op_ctx *tmpl)
411 struct mv_cesa_skcipher_req *creq = skcipher_request_ctx(req);
412 struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req);
413 unsigned int blksize = crypto_skcipher_blocksize(tfm);
416 if (!IS_ALIGNED(req->cryptlen, blksize))
419 creq->src_nents = sg_nents_for_len(req->src, req->cryptlen);
420 if (creq->src_nents < 0) {
421 dev_err(cesa_dev->dev, "Invalid number of src SG");
422 return creq->src_nents;
424 creq->dst_nents = sg_nents_for_len(req->dst, req->cryptlen);
425 if (creq->dst_nents < 0) {
426 dev_err(cesa_dev->dev, "Invalid number of dst SG");
427 return creq->dst_nents;
430 mv_cesa_update_op_cfg(tmpl, CESA_SA_DESC_CFG_OP_CRYPT_ONLY,
431 CESA_SA_DESC_CFG_OP_MSK);
433 if (cesa_dev->caps->has_tdma)
434 ret = mv_cesa_skcipher_dma_req_init(req, tmpl);
436 ret = mv_cesa_skcipher_std_req_init(req, tmpl);
441 static int mv_cesa_skcipher_queue_req(struct skcipher_request *req,
442 struct mv_cesa_op_ctx *tmpl)
445 struct mv_cesa_skcipher_req *creq = skcipher_request_ctx(req);
446 struct mv_cesa_engine *engine;
448 ret = mv_cesa_skcipher_req_init(req, tmpl);
452 engine = mv_cesa_select_engine(req->cryptlen);
453 mv_cesa_skcipher_prepare(&req->base, engine);
455 ret = mv_cesa_queue_req(&req->base, &creq->base);
457 if (mv_cesa_req_needs_cleanup(&req->base, ret))
458 mv_cesa_skcipher_cleanup(req);
463 static int mv_cesa_des_op(struct skcipher_request *req,
464 struct mv_cesa_op_ctx *tmpl)
466 struct mv_cesa_des_ctx *ctx = crypto_tfm_ctx(req->base.tfm);
468 mv_cesa_update_op_cfg(tmpl, CESA_SA_DESC_CFG_CRYPTM_DES,
469 CESA_SA_DESC_CFG_CRYPTM_MSK);
471 memcpy(tmpl->ctx.skcipher.key, ctx->key, DES_KEY_SIZE);
473 return mv_cesa_skcipher_queue_req(req, tmpl);
476 static int mv_cesa_ecb_des_encrypt(struct skcipher_request *req)
478 struct mv_cesa_op_ctx tmpl;
480 mv_cesa_set_op_cfg(&tmpl,
481 CESA_SA_DESC_CFG_CRYPTCM_ECB |
482 CESA_SA_DESC_CFG_DIR_ENC);
484 return mv_cesa_des_op(req, &tmpl);
487 static int mv_cesa_ecb_des_decrypt(struct skcipher_request *req)
489 struct mv_cesa_op_ctx tmpl;
491 mv_cesa_set_op_cfg(&tmpl,
492 CESA_SA_DESC_CFG_CRYPTCM_ECB |
493 CESA_SA_DESC_CFG_DIR_DEC);
495 return mv_cesa_des_op(req, &tmpl);
498 struct skcipher_alg mv_cesa_ecb_des_alg = {
499 .setkey = mv_cesa_des_setkey,
500 .encrypt = mv_cesa_ecb_des_encrypt,
501 .decrypt = mv_cesa_ecb_des_decrypt,
502 .min_keysize = DES_KEY_SIZE,
503 .max_keysize = DES_KEY_SIZE,
505 .cra_name = "ecb(des)",
506 .cra_driver_name = "mv-ecb-des",
508 .cra_flags = CRYPTO_ALG_KERN_DRIVER_ONLY | CRYPTO_ALG_ASYNC,
509 .cra_blocksize = DES_BLOCK_SIZE,
510 .cra_ctxsize = sizeof(struct mv_cesa_des_ctx),
512 .cra_module = THIS_MODULE,
513 .cra_init = mv_cesa_skcipher_cra_init,
514 .cra_exit = mv_cesa_skcipher_cra_exit,
518 static int mv_cesa_cbc_des_op(struct skcipher_request *req,
519 struct mv_cesa_op_ctx *tmpl)
521 mv_cesa_update_op_cfg(tmpl, CESA_SA_DESC_CFG_CRYPTCM_CBC,
522 CESA_SA_DESC_CFG_CRYPTCM_MSK);
524 memcpy(tmpl->ctx.skcipher.iv, req->iv, DES_BLOCK_SIZE);
526 return mv_cesa_des_op(req, tmpl);
529 static int mv_cesa_cbc_des_encrypt(struct skcipher_request *req)
531 struct mv_cesa_op_ctx tmpl;
533 mv_cesa_set_op_cfg(&tmpl, CESA_SA_DESC_CFG_DIR_ENC);
535 return mv_cesa_cbc_des_op(req, &tmpl);
538 static int mv_cesa_cbc_des_decrypt(struct skcipher_request *req)
540 struct mv_cesa_op_ctx tmpl;
542 mv_cesa_set_op_cfg(&tmpl, CESA_SA_DESC_CFG_DIR_DEC);
544 return mv_cesa_cbc_des_op(req, &tmpl);
547 struct skcipher_alg mv_cesa_cbc_des_alg = {
548 .setkey = mv_cesa_des_setkey,
549 .encrypt = mv_cesa_cbc_des_encrypt,
550 .decrypt = mv_cesa_cbc_des_decrypt,
551 .min_keysize = DES_KEY_SIZE,
552 .max_keysize = DES_KEY_SIZE,
553 .ivsize = DES_BLOCK_SIZE,
555 .cra_name = "cbc(des)",
556 .cra_driver_name = "mv-cbc-des",
558 .cra_flags = CRYPTO_ALG_KERN_DRIVER_ONLY | CRYPTO_ALG_ASYNC,
559 .cra_blocksize = DES_BLOCK_SIZE,
560 .cra_ctxsize = sizeof(struct mv_cesa_des_ctx),
562 .cra_module = THIS_MODULE,
563 .cra_init = mv_cesa_skcipher_cra_init,
564 .cra_exit = mv_cesa_skcipher_cra_exit,
568 static int mv_cesa_des3_op(struct skcipher_request *req,
569 struct mv_cesa_op_ctx *tmpl)
571 struct mv_cesa_des3_ctx *ctx = crypto_tfm_ctx(req->base.tfm);
573 mv_cesa_update_op_cfg(tmpl, CESA_SA_DESC_CFG_CRYPTM_3DES,
574 CESA_SA_DESC_CFG_CRYPTM_MSK);
576 memcpy(tmpl->ctx.skcipher.key, ctx->key, DES3_EDE_KEY_SIZE);
578 return mv_cesa_skcipher_queue_req(req, tmpl);
581 static int mv_cesa_ecb_des3_ede_encrypt(struct skcipher_request *req)
583 struct mv_cesa_op_ctx tmpl;
585 mv_cesa_set_op_cfg(&tmpl,
586 CESA_SA_DESC_CFG_CRYPTCM_ECB |
587 CESA_SA_DESC_CFG_3DES_EDE |
588 CESA_SA_DESC_CFG_DIR_ENC);
590 return mv_cesa_des3_op(req, &tmpl);
593 static int mv_cesa_ecb_des3_ede_decrypt(struct skcipher_request *req)
595 struct mv_cesa_op_ctx tmpl;
597 mv_cesa_set_op_cfg(&tmpl,
598 CESA_SA_DESC_CFG_CRYPTCM_ECB |
599 CESA_SA_DESC_CFG_3DES_EDE |
600 CESA_SA_DESC_CFG_DIR_DEC);
602 return mv_cesa_des3_op(req, &tmpl);
605 struct skcipher_alg mv_cesa_ecb_des3_ede_alg = {
606 .setkey = mv_cesa_des3_ede_setkey,
607 .encrypt = mv_cesa_ecb_des3_ede_encrypt,
608 .decrypt = mv_cesa_ecb_des3_ede_decrypt,
609 .min_keysize = DES3_EDE_KEY_SIZE,
610 .max_keysize = DES3_EDE_KEY_SIZE,
611 .ivsize = DES3_EDE_BLOCK_SIZE,
613 .cra_name = "ecb(des3_ede)",
614 .cra_driver_name = "mv-ecb-des3-ede",
616 .cra_flags = CRYPTO_ALG_KERN_DRIVER_ONLY | CRYPTO_ALG_ASYNC,
617 .cra_blocksize = DES3_EDE_BLOCK_SIZE,
618 .cra_ctxsize = sizeof(struct mv_cesa_des3_ctx),
620 .cra_module = THIS_MODULE,
621 .cra_init = mv_cesa_skcipher_cra_init,
622 .cra_exit = mv_cesa_skcipher_cra_exit,
626 static int mv_cesa_cbc_des3_op(struct skcipher_request *req,
627 struct mv_cesa_op_ctx *tmpl)
629 memcpy(tmpl->ctx.skcipher.iv, req->iv, DES3_EDE_BLOCK_SIZE);
631 return mv_cesa_des3_op(req, tmpl);
634 static int mv_cesa_cbc_des3_ede_encrypt(struct skcipher_request *req)
636 struct mv_cesa_op_ctx tmpl;
638 mv_cesa_set_op_cfg(&tmpl,
639 CESA_SA_DESC_CFG_CRYPTCM_CBC |
640 CESA_SA_DESC_CFG_3DES_EDE |
641 CESA_SA_DESC_CFG_DIR_ENC);
643 return mv_cesa_cbc_des3_op(req, &tmpl);
646 static int mv_cesa_cbc_des3_ede_decrypt(struct skcipher_request *req)
648 struct mv_cesa_op_ctx tmpl;
650 mv_cesa_set_op_cfg(&tmpl,
651 CESA_SA_DESC_CFG_CRYPTCM_CBC |
652 CESA_SA_DESC_CFG_3DES_EDE |
653 CESA_SA_DESC_CFG_DIR_DEC);
655 return mv_cesa_cbc_des3_op(req, &tmpl);
658 struct skcipher_alg mv_cesa_cbc_des3_ede_alg = {
659 .setkey = mv_cesa_des3_ede_setkey,
660 .encrypt = mv_cesa_cbc_des3_ede_encrypt,
661 .decrypt = mv_cesa_cbc_des3_ede_decrypt,
662 .min_keysize = DES3_EDE_KEY_SIZE,
663 .max_keysize = DES3_EDE_KEY_SIZE,
664 .ivsize = DES3_EDE_BLOCK_SIZE,
666 .cra_name = "cbc(des3_ede)",
667 .cra_driver_name = "mv-cbc-des3-ede",
669 .cra_flags = CRYPTO_ALG_KERN_DRIVER_ONLY | CRYPTO_ALG_ASYNC,
670 .cra_blocksize = DES3_EDE_BLOCK_SIZE,
671 .cra_ctxsize = sizeof(struct mv_cesa_des3_ctx),
673 .cra_module = THIS_MODULE,
674 .cra_init = mv_cesa_skcipher_cra_init,
675 .cra_exit = mv_cesa_skcipher_cra_exit,
679 static int mv_cesa_aes_op(struct skcipher_request *req,
680 struct mv_cesa_op_ctx *tmpl)
682 struct mv_cesa_aes_ctx *ctx = crypto_tfm_ctx(req->base.tfm);
687 cfg = CESA_SA_DESC_CFG_CRYPTM_AES;
689 if (mv_cesa_get_op_cfg(tmpl) & CESA_SA_DESC_CFG_DIR_DEC)
690 key = ctx->aes.key_dec;
692 key = ctx->aes.key_enc;
694 for (i = 0; i < ctx->aes.key_length / sizeof(u32); i++)
695 tmpl->ctx.skcipher.key[i] = cpu_to_le32(key[i]);
697 if (ctx->aes.key_length == 24)
698 cfg |= CESA_SA_DESC_CFG_AES_LEN_192;
699 else if (ctx->aes.key_length == 32)
700 cfg |= CESA_SA_DESC_CFG_AES_LEN_256;
702 mv_cesa_update_op_cfg(tmpl, cfg,
703 CESA_SA_DESC_CFG_CRYPTM_MSK |
704 CESA_SA_DESC_CFG_AES_LEN_MSK);
706 return mv_cesa_skcipher_queue_req(req, tmpl);
709 static int mv_cesa_ecb_aes_encrypt(struct skcipher_request *req)
711 struct mv_cesa_op_ctx tmpl;
713 mv_cesa_set_op_cfg(&tmpl,
714 CESA_SA_DESC_CFG_CRYPTCM_ECB |
715 CESA_SA_DESC_CFG_DIR_ENC);
717 return mv_cesa_aes_op(req, &tmpl);
720 static int mv_cesa_ecb_aes_decrypt(struct skcipher_request *req)
722 struct mv_cesa_op_ctx tmpl;
724 mv_cesa_set_op_cfg(&tmpl,
725 CESA_SA_DESC_CFG_CRYPTCM_ECB |
726 CESA_SA_DESC_CFG_DIR_DEC);
728 return mv_cesa_aes_op(req, &tmpl);
731 struct skcipher_alg mv_cesa_ecb_aes_alg = {
732 .setkey = mv_cesa_aes_setkey,
733 .encrypt = mv_cesa_ecb_aes_encrypt,
734 .decrypt = mv_cesa_ecb_aes_decrypt,
735 .min_keysize = AES_MIN_KEY_SIZE,
736 .max_keysize = AES_MAX_KEY_SIZE,
738 .cra_name = "ecb(aes)",
739 .cra_driver_name = "mv-ecb-aes",
741 .cra_flags = CRYPTO_ALG_KERN_DRIVER_ONLY | CRYPTO_ALG_ASYNC,
742 .cra_blocksize = AES_BLOCK_SIZE,
743 .cra_ctxsize = sizeof(struct mv_cesa_aes_ctx),
745 .cra_module = THIS_MODULE,
746 .cra_init = mv_cesa_skcipher_cra_init,
747 .cra_exit = mv_cesa_skcipher_cra_exit,
751 static int mv_cesa_cbc_aes_op(struct skcipher_request *req,
752 struct mv_cesa_op_ctx *tmpl)
754 mv_cesa_update_op_cfg(tmpl, CESA_SA_DESC_CFG_CRYPTCM_CBC,
755 CESA_SA_DESC_CFG_CRYPTCM_MSK);
756 memcpy(tmpl->ctx.skcipher.iv, req->iv, AES_BLOCK_SIZE);
758 return mv_cesa_aes_op(req, tmpl);
761 static int mv_cesa_cbc_aes_encrypt(struct skcipher_request *req)
763 struct mv_cesa_op_ctx tmpl;
765 mv_cesa_set_op_cfg(&tmpl, CESA_SA_DESC_CFG_DIR_ENC);
767 return mv_cesa_cbc_aes_op(req, &tmpl);
770 static int mv_cesa_cbc_aes_decrypt(struct skcipher_request *req)
772 struct mv_cesa_op_ctx tmpl;
774 mv_cesa_set_op_cfg(&tmpl, CESA_SA_DESC_CFG_DIR_DEC);
776 return mv_cesa_cbc_aes_op(req, &tmpl);
779 struct skcipher_alg mv_cesa_cbc_aes_alg = {
780 .setkey = mv_cesa_aes_setkey,
781 .encrypt = mv_cesa_cbc_aes_encrypt,
782 .decrypt = mv_cesa_cbc_aes_decrypt,
783 .min_keysize = AES_MIN_KEY_SIZE,
784 .max_keysize = AES_MAX_KEY_SIZE,
785 .ivsize = AES_BLOCK_SIZE,
787 .cra_name = "cbc(aes)",
788 .cra_driver_name = "mv-cbc-aes",
790 .cra_flags = CRYPTO_ALG_KERN_DRIVER_ONLY | CRYPTO_ALG_ASYNC,
791 .cra_blocksize = AES_BLOCK_SIZE,
792 .cra_ctxsize = sizeof(struct mv_cesa_aes_ctx),
794 .cra_module = THIS_MODULE,
795 .cra_init = mv_cesa_skcipher_cra_init,
796 .cra_exit = mv_cesa_skcipher_cra_exit,