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>
14 #include <linux/device.h>
15 #include <linux/dma-mapping.h>
19 struct mv_cesa_des_ctx {
20 struct mv_cesa_ctx base;
24 struct mv_cesa_des3_ctx {
25 struct mv_cesa_ctx base;
26 u8 key[DES3_EDE_KEY_SIZE];
29 struct mv_cesa_aes_ctx {
30 struct mv_cesa_ctx base;
31 struct crypto_aes_ctx aes;
34 struct mv_cesa_skcipher_dma_iter {
35 struct mv_cesa_dma_iter base;
36 struct mv_cesa_sg_dma_iter src;
37 struct mv_cesa_sg_dma_iter dst;
41 mv_cesa_skcipher_req_iter_init(struct mv_cesa_skcipher_dma_iter *iter,
42 struct skcipher_request *req)
44 mv_cesa_req_dma_iter_init(&iter->base, req->cryptlen);
45 mv_cesa_sg_dma_iter_init(&iter->src, req->src, DMA_TO_DEVICE);
46 mv_cesa_sg_dma_iter_init(&iter->dst, req->dst, DMA_FROM_DEVICE);
50 mv_cesa_skcipher_req_iter_next_op(struct mv_cesa_skcipher_dma_iter *iter)
52 iter->src.op_offset = 0;
53 iter->dst.op_offset = 0;
55 return mv_cesa_req_dma_iter_next_op(&iter->base);
59 mv_cesa_skcipher_dma_cleanup(struct skcipher_request *req)
61 struct mv_cesa_skcipher_req *creq = skcipher_request_ctx(req);
63 if (req->dst != req->src) {
64 dma_unmap_sg(cesa_dev->dev, req->dst, creq->dst_nents,
66 dma_unmap_sg(cesa_dev->dev, req->src, creq->src_nents,
69 dma_unmap_sg(cesa_dev->dev, req->src, creq->src_nents,
72 mv_cesa_dma_cleanup(&creq->base);
75 static inline void mv_cesa_skcipher_cleanup(struct skcipher_request *req)
77 struct mv_cesa_skcipher_req *creq = skcipher_request_ctx(req);
79 if (mv_cesa_req_get_type(&creq->base) == CESA_DMA_REQ)
80 mv_cesa_skcipher_dma_cleanup(req);
83 static void mv_cesa_skcipher_std_step(struct skcipher_request *req)
85 struct mv_cesa_skcipher_req *creq = skcipher_request_ctx(req);
86 struct mv_cesa_skcipher_std_req *sreq = &creq->std;
87 struct mv_cesa_engine *engine = creq->base.engine;
88 size_t len = min_t(size_t, req->cryptlen - sreq->offset,
89 CESA_SA_SRAM_PAYLOAD_SIZE);
91 mv_cesa_adjust_op(engine, &sreq->op);
92 memcpy_toio(engine->sram, &sreq->op, sizeof(sreq->op));
94 len = sg_pcopy_to_buffer(req->src, creq->src_nents,
95 engine->sram + CESA_SA_DATA_SRAM_OFFSET,
99 mv_cesa_set_crypt_op_len(&sreq->op, len);
101 /* FIXME: only update enc_len field */
102 if (!sreq->skip_ctx) {
103 memcpy_toio(engine->sram, &sreq->op, sizeof(sreq->op));
104 sreq->skip_ctx = true;
106 memcpy_toio(engine->sram, &sreq->op, sizeof(sreq->op.desc));
109 mv_cesa_set_int_mask(engine, CESA_SA_INT_ACCEL0_DONE);
110 writel_relaxed(CESA_SA_CFG_PARA_DIS, engine->regs + CESA_SA_CFG);
111 WARN_ON(readl(engine->regs + CESA_SA_CMD) &
112 CESA_SA_CMD_EN_CESA_SA_ACCL0);
113 writel(CESA_SA_CMD_EN_CESA_SA_ACCL0, engine->regs + CESA_SA_CMD);
116 static int mv_cesa_skcipher_std_process(struct skcipher_request *req,
119 struct mv_cesa_skcipher_req *creq = skcipher_request_ctx(req);
120 struct mv_cesa_skcipher_std_req *sreq = &creq->std;
121 struct mv_cesa_engine *engine = creq->base.engine;
124 len = sg_pcopy_from_buffer(req->dst, creq->dst_nents,
125 engine->sram + CESA_SA_DATA_SRAM_OFFSET,
126 sreq->size, sreq->offset);
129 if (sreq->offset < req->cryptlen)
135 static int mv_cesa_skcipher_process(struct crypto_async_request *req,
138 struct skcipher_request *skreq = skcipher_request_cast(req);
139 struct mv_cesa_skcipher_req *creq = skcipher_request_ctx(skreq);
140 struct mv_cesa_req *basereq = &creq->base;
142 if (mv_cesa_req_get_type(basereq) == CESA_STD_REQ)
143 return mv_cesa_skcipher_std_process(skreq, status);
145 return mv_cesa_dma_process(basereq, status);
148 static void mv_cesa_skcipher_step(struct crypto_async_request *req)
150 struct skcipher_request *skreq = skcipher_request_cast(req);
151 struct mv_cesa_skcipher_req *creq = skcipher_request_ctx(skreq);
153 if (mv_cesa_req_get_type(&creq->base) == CESA_DMA_REQ)
154 mv_cesa_dma_step(&creq->base);
156 mv_cesa_skcipher_std_step(skreq);
160 mv_cesa_skcipher_dma_prepare(struct skcipher_request *req)
162 struct mv_cesa_skcipher_req *creq = skcipher_request_ctx(req);
163 struct mv_cesa_req *basereq = &creq->base;
165 mv_cesa_dma_prepare(basereq, basereq->engine);
169 mv_cesa_skcipher_std_prepare(struct skcipher_request *req)
171 struct mv_cesa_skcipher_req *creq = skcipher_request_ctx(req);
172 struct mv_cesa_skcipher_std_req *sreq = &creq->std;
178 static inline void mv_cesa_skcipher_prepare(struct crypto_async_request *req,
179 struct mv_cesa_engine *engine)
181 struct skcipher_request *skreq = skcipher_request_cast(req);
182 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.skcipher.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 = aes_expandkey(&ctx->aes, key, len);
264 remaining = (ctx->aes.key_length - 16) / 4;
265 offset = ctx->aes.key_length + 24 - remaining;
266 for (i = 0; i < remaining; i++)
267 ctx->aes.key_dec[4 + i] = ctx->aes.key_enc[offset + i];
272 static int mv_cesa_des_setkey(struct crypto_skcipher *cipher, const u8 *key,
275 struct mv_cesa_des_ctx *ctx = crypto_skcipher_ctx(cipher);
278 err = verify_skcipher_des_key(cipher, key);
282 memcpy(ctx->key, key, DES_KEY_SIZE);
287 static int mv_cesa_des3_ede_setkey(struct crypto_skcipher *cipher,
288 const u8 *key, unsigned int len)
290 struct mv_cesa_des3_ctx *ctx = crypto_skcipher_ctx(cipher);
293 err = verify_skcipher_des3_key(cipher, key);
297 memcpy(ctx->key, key, DES3_EDE_KEY_SIZE);
302 static int mv_cesa_skcipher_dma_req_init(struct skcipher_request *req,
303 const struct mv_cesa_op_ctx *op_templ)
305 struct mv_cesa_skcipher_req *creq = skcipher_request_ctx(req);
306 gfp_t flags = (req->base.flags & CRYPTO_TFM_REQ_MAY_SLEEP) ?
307 GFP_KERNEL : GFP_ATOMIC;
308 struct mv_cesa_req *basereq = &creq->base;
309 struct mv_cesa_skcipher_dma_iter iter;
310 bool skip_ctx = false;
313 basereq->chain.first = NULL;
314 basereq->chain.last = NULL;
316 if (req->src != req->dst) {
317 ret = dma_map_sg(cesa_dev->dev, req->src, creq->src_nents,
322 ret = dma_map_sg(cesa_dev->dev, req->dst, creq->dst_nents,
329 ret = dma_map_sg(cesa_dev->dev, req->src, creq->src_nents,
335 mv_cesa_tdma_desc_iter_init(&basereq->chain);
336 mv_cesa_skcipher_req_iter_init(&iter, req);
339 struct mv_cesa_op_ctx *op;
341 op = mv_cesa_dma_add_op(&basereq->chain, op_templ, skip_ctx,
349 mv_cesa_set_crypt_op_len(op, iter.base.op_len);
351 /* Add input transfers */
352 ret = mv_cesa_dma_add_op_transfers(&basereq->chain, &iter.base,
357 /* Add dummy desc to launch the crypto operation */
358 ret = mv_cesa_dma_add_dummy_launch(&basereq->chain, flags);
362 /* Add output transfers */
363 ret = mv_cesa_dma_add_op_transfers(&basereq->chain, &iter.base,
368 } while (mv_cesa_skcipher_req_iter_next_op(&iter));
370 /* Add output data for IV */
371 ret = mv_cesa_dma_add_result_op(&basereq->chain,
372 CESA_SA_CFG_SRAM_OFFSET,
373 CESA_SA_DATA_SRAM_OFFSET,
374 CESA_TDMA_SRC_IN_SRAM, flags);
379 basereq->chain.last->flags |= CESA_TDMA_END_OF_REQ;
384 mv_cesa_dma_cleanup(basereq);
385 if (req->dst != req->src)
386 dma_unmap_sg(cesa_dev->dev, req->dst, creq->dst_nents,
390 dma_unmap_sg(cesa_dev->dev, req->src, creq->src_nents,
391 req->dst != req->src ? DMA_TO_DEVICE : DMA_BIDIRECTIONAL);
397 mv_cesa_skcipher_std_req_init(struct skcipher_request *req,
398 const struct mv_cesa_op_ctx *op_templ)
400 struct mv_cesa_skcipher_req *creq = skcipher_request_ctx(req);
401 struct mv_cesa_skcipher_std_req *sreq = &creq->std;
402 struct mv_cesa_req *basereq = &creq->base;
404 sreq->op = *op_templ;
405 sreq->skip_ctx = false;
406 basereq->chain.first = NULL;
407 basereq->chain.last = NULL;
412 static int mv_cesa_skcipher_req_init(struct skcipher_request *req,
413 struct mv_cesa_op_ctx *tmpl)
415 struct mv_cesa_skcipher_req *creq = skcipher_request_ctx(req);
416 struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req);
417 unsigned int blksize = crypto_skcipher_blocksize(tfm);
420 if (!IS_ALIGNED(req->cryptlen, blksize))
423 creq->src_nents = sg_nents_for_len(req->src, req->cryptlen);
424 if (creq->src_nents < 0) {
425 dev_err(cesa_dev->dev, "Invalid number of src SG");
426 return creq->src_nents;
428 creq->dst_nents = sg_nents_for_len(req->dst, req->cryptlen);
429 if (creq->dst_nents < 0) {
430 dev_err(cesa_dev->dev, "Invalid number of dst SG");
431 return creq->dst_nents;
434 mv_cesa_update_op_cfg(tmpl, CESA_SA_DESC_CFG_OP_CRYPT_ONLY,
435 CESA_SA_DESC_CFG_OP_MSK);
437 if (cesa_dev->caps->has_tdma)
438 ret = mv_cesa_skcipher_dma_req_init(req, tmpl);
440 ret = mv_cesa_skcipher_std_req_init(req, tmpl);
445 static int mv_cesa_skcipher_queue_req(struct skcipher_request *req,
446 struct mv_cesa_op_ctx *tmpl)
449 struct mv_cesa_skcipher_req *creq = skcipher_request_ctx(req);
450 struct mv_cesa_engine *engine;
452 ret = mv_cesa_skcipher_req_init(req, tmpl);
456 engine = mv_cesa_select_engine(req->cryptlen);
457 mv_cesa_skcipher_prepare(&req->base, engine);
459 ret = mv_cesa_queue_req(&req->base, &creq->base);
461 if (mv_cesa_req_needs_cleanup(&req->base, ret))
462 mv_cesa_skcipher_cleanup(req);
467 static int mv_cesa_des_op(struct skcipher_request *req,
468 struct mv_cesa_op_ctx *tmpl)
470 struct mv_cesa_des_ctx *ctx = crypto_tfm_ctx(req->base.tfm);
472 mv_cesa_update_op_cfg(tmpl, CESA_SA_DESC_CFG_CRYPTM_DES,
473 CESA_SA_DESC_CFG_CRYPTM_MSK);
475 memcpy(tmpl->ctx.skcipher.key, ctx->key, DES_KEY_SIZE);
477 return mv_cesa_skcipher_queue_req(req, tmpl);
480 static int mv_cesa_ecb_des_encrypt(struct skcipher_request *req)
482 struct mv_cesa_op_ctx tmpl;
484 mv_cesa_set_op_cfg(&tmpl,
485 CESA_SA_DESC_CFG_CRYPTCM_ECB |
486 CESA_SA_DESC_CFG_DIR_ENC);
488 return mv_cesa_des_op(req, &tmpl);
491 static int mv_cesa_ecb_des_decrypt(struct skcipher_request *req)
493 struct mv_cesa_op_ctx tmpl;
495 mv_cesa_set_op_cfg(&tmpl,
496 CESA_SA_DESC_CFG_CRYPTCM_ECB |
497 CESA_SA_DESC_CFG_DIR_DEC);
499 return mv_cesa_des_op(req, &tmpl);
502 struct skcipher_alg mv_cesa_ecb_des_alg = {
503 .setkey = mv_cesa_des_setkey,
504 .encrypt = mv_cesa_ecb_des_encrypt,
505 .decrypt = mv_cesa_ecb_des_decrypt,
506 .min_keysize = DES_KEY_SIZE,
507 .max_keysize = DES_KEY_SIZE,
509 .cra_name = "ecb(des)",
510 .cra_driver_name = "mv-ecb-des",
512 .cra_flags = CRYPTO_ALG_KERN_DRIVER_ONLY | CRYPTO_ALG_ASYNC |
513 CRYPTO_ALG_ALLOCATES_MEMORY,
514 .cra_blocksize = DES_BLOCK_SIZE,
515 .cra_ctxsize = sizeof(struct mv_cesa_des_ctx),
517 .cra_module = THIS_MODULE,
518 .cra_init = mv_cesa_skcipher_cra_init,
519 .cra_exit = mv_cesa_skcipher_cra_exit,
523 static int mv_cesa_cbc_des_op(struct skcipher_request *req,
524 struct mv_cesa_op_ctx *tmpl)
526 mv_cesa_update_op_cfg(tmpl, CESA_SA_DESC_CFG_CRYPTCM_CBC,
527 CESA_SA_DESC_CFG_CRYPTCM_MSK);
529 memcpy(tmpl->ctx.skcipher.iv, req->iv, DES_BLOCK_SIZE);
531 return mv_cesa_des_op(req, tmpl);
534 static int mv_cesa_cbc_des_encrypt(struct skcipher_request *req)
536 struct mv_cesa_op_ctx tmpl;
538 mv_cesa_set_op_cfg(&tmpl, CESA_SA_DESC_CFG_DIR_ENC);
540 return mv_cesa_cbc_des_op(req, &tmpl);
543 static int mv_cesa_cbc_des_decrypt(struct skcipher_request *req)
545 struct mv_cesa_op_ctx tmpl;
547 mv_cesa_set_op_cfg(&tmpl, CESA_SA_DESC_CFG_DIR_DEC);
549 return mv_cesa_cbc_des_op(req, &tmpl);
552 struct skcipher_alg mv_cesa_cbc_des_alg = {
553 .setkey = mv_cesa_des_setkey,
554 .encrypt = mv_cesa_cbc_des_encrypt,
555 .decrypt = mv_cesa_cbc_des_decrypt,
556 .min_keysize = DES_KEY_SIZE,
557 .max_keysize = DES_KEY_SIZE,
558 .ivsize = DES_BLOCK_SIZE,
560 .cra_name = "cbc(des)",
561 .cra_driver_name = "mv-cbc-des",
563 .cra_flags = CRYPTO_ALG_KERN_DRIVER_ONLY | CRYPTO_ALG_ASYNC |
564 CRYPTO_ALG_ALLOCATES_MEMORY,
565 .cra_blocksize = DES_BLOCK_SIZE,
566 .cra_ctxsize = sizeof(struct mv_cesa_des_ctx),
568 .cra_module = THIS_MODULE,
569 .cra_init = mv_cesa_skcipher_cra_init,
570 .cra_exit = mv_cesa_skcipher_cra_exit,
574 static int mv_cesa_des3_op(struct skcipher_request *req,
575 struct mv_cesa_op_ctx *tmpl)
577 struct mv_cesa_des3_ctx *ctx = crypto_tfm_ctx(req->base.tfm);
579 mv_cesa_update_op_cfg(tmpl, CESA_SA_DESC_CFG_CRYPTM_3DES,
580 CESA_SA_DESC_CFG_CRYPTM_MSK);
582 memcpy(tmpl->ctx.skcipher.key, ctx->key, DES3_EDE_KEY_SIZE);
584 return mv_cesa_skcipher_queue_req(req, tmpl);
587 static int mv_cesa_ecb_des3_ede_encrypt(struct skcipher_request *req)
589 struct mv_cesa_op_ctx tmpl;
591 mv_cesa_set_op_cfg(&tmpl,
592 CESA_SA_DESC_CFG_CRYPTCM_ECB |
593 CESA_SA_DESC_CFG_3DES_EDE |
594 CESA_SA_DESC_CFG_DIR_ENC);
596 return mv_cesa_des3_op(req, &tmpl);
599 static int mv_cesa_ecb_des3_ede_decrypt(struct skcipher_request *req)
601 struct mv_cesa_op_ctx tmpl;
603 mv_cesa_set_op_cfg(&tmpl,
604 CESA_SA_DESC_CFG_CRYPTCM_ECB |
605 CESA_SA_DESC_CFG_3DES_EDE |
606 CESA_SA_DESC_CFG_DIR_DEC);
608 return mv_cesa_des3_op(req, &tmpl);
611 struct skcipher_alg mv_cesa_ecb_des3_ede_alg = {
612 .setkey = mv_cesa_des3_ede_setkey,
613 .encrypt = mv_cesa_ecb_des3_ede_encrypt,
614 .decrypt = mv_cesa_ecb_des3_ede_decrypt,
615 .min_keysize = DES3_EDE_KEY_SIZE,
616 .max_keysize = DES3_EDE_KEY_SIZE,
618 .cra_name = "ecb(des3_ede)",
619 .cra_driver_name = "mv-ecb-des3-ede",
621 .cra_flags = CRYPTO_ALG_KERN_DRIVER_ONLY | CRYPTO_ALG_ASYNC |
622 CRYPTO_ALG_ALLOCATES_MEMORY,
623 .cra_blocksize = DES3_EDE_BLOCK_SIZE,
624 .cra_ctxsize = sizeof(struct mv_cesa_des3_ctx),
626 .cra_module = THIS_MODULE,
627 .cra_init = mv_cesa_skcipher_cra_init,
628 .cra_exit = mv_cesa_skcipher_cra_exit,
632 static int mv_cesa_cbc_des3_op(struct skcipher_request *req,
633 struct mv_cesa_op_ctx *tmpl)
635 memcpy(tmpl->ctx.skcipher.iv, req->iv, DES3_EDE_BLOCK_SIZE);
637 return mv_cesa_des3_op(req, tmpl);
640 static int mv_cesa_cbc_des3_ede_encrypt(struct skcipher_request *req)
642 struct mv_cesa_op_ctx tmpl;
644 mv_cesa_set_op_cfg(&tmpl,
645 CESA_SA_DESC_CFG_CRYPTCM_CBC |
646 CESA_SA_DESC_CFG_3DES_EDE |
647 CESA_SA_DESC_CFG_DIR_ENC);
649 return mv_cesa_cbc_des3_op(req, &tmpl);
652 static int mv_cesa_cbc_des3_ede_decrypt(struct skcipher_request *req)
654 struct mv_cesa_op_ctx tmpl;
656 mv_cesa_set_op_cfg(&tmpl,
657 CESA_SA_DESC_CFG_CRYPTCM_CBC |
658 CESA_SA_DESC_CFG_3DES_EDE |
659 CESA_SA_DESC_CFG_DIR_DEC);
661 return mv_cesa_cbc_des3_op(req, &tmpl);
664 struct skcipher_alg mv_cesa_cbc_des3_ede_alg = {
665 .setkey = mv_cesa_des3_ede_setkey,
666 .encrypt = mv_cesa_cbc_des3_ede_encrypt,
667 .decrypt = mv_cesa_cbc_des3_ede_decrypt,
668 .min_keysize = DES3_EDE_KEY_SIZE,
669 .max_keysize = DES3_EDE_KEY_SIZE,
670 .ivsize = DES3_EDE_BLOCK_SIZE,
672 .cra_name = "cbc(des3_ede)",
673 .cra_driver_name = "mv-cbc-des3-ede",
675 .cra_flags = CRYPTO_ALG_KERN_DRIVER_ONLY | CRYPTO_ALG_ASYNC |
676 CRYPTO_ALG_ALLOCATES_MEMORY,
677 .cra_blocksize = DES3_EDE_BLOCK_SIZE,
678 .cra_ctxsize = sizeof(struct mv_cesa_des3_ctx),
680 .cra_module = THIS_MODULE,
681 .cra_init = mv_cesa_skcipher_cra_init,
682 .cra_exit = mv_cesa_skcipher_cra_exit,
686 static int mv_cesa_aes_op(struct skcipher_request *req,
687 struct mv_cesa_op_ctx *tmpl)
689 struct mv_cesa_aes_ctx *ctx = crypto_tfm_ctx(req->base.tfm);
694 cfg = CESA_SA_DESC_CFG_CRYPTM_AES;
696 if (mv_cesa_get_op_cfg(tmpl) & CESA_SA_DESC_CFG_DIR_DEC)
697 key = ctx->aes.key_dec;
699 key = ctx->aes.key_enc;
701 for (i = 0; i < ctx->aes.key_length / sizeof(u32); i++)
702 tmpl->ctx.skcipher.key[i] = cpu_to_le32(key[i]);
704 if (ctx->aes.key_length == 24)
705 cfg |= CESA_SA_DESC_CFG_AES_LEN_192;
706 else if (ctx->aes.key_length == 32)
707 cfg |= CESA_SA_DESC_CFG_AES_LEN_256;
709 mv_cesa_update_op_cfg(tmpl, cfg,
710 CESA_SA_DESC_CFG_CRYPTM_MSK |
711 CESA_SA_DESC_CFG_AES_LEN_MSK);
713 return mv_cesa_skcipher_queue_req(req, tmpl);
716 static int mv_cesa_ecb_aes_encrypt(struct skcipher_request *req)
718 struct mv_cesa_op_ctx tmpl;
720 mv_cesa_set_op_cfg(&tmpl,
721 CESA_SA_DESC_CFG_CRYPTCM_ECB |
722 CESA_SA_DESC_CFG_DIR_ENC);
724 return mv_cesa_aes_op(req, &tmpl);
727 static int mv_cesa_ecb_aes_decrypt(struct skcipher_request *req)
729 struct mv_cesa_op_ctx tmpl;
731 mv_cesa_set_op_cfg(&tmpl,
732 CESA_SA_DESC_CFG_CRYPTCM_ECB |
733 CESA_SA_DESC_CFG_DIR_DEC);
735 return mv_cesa_aes_op(req, &tmpl);
738 struct skcipher_alg mv_cesa_ecb_aes_alg = {
739 .setkey = mv_cesa_aes_setkey,
740 .encrypt = mv_cesa_ecb_aes_encrypt,
741 .decrypt = mv_cesa_ecb_aes_decrypt,
742 .min_keysize = AES_MIN_KEY_SIZE,
743 .max_keysize = AES_MAX_KEY_SIZE,
745 .cra_name = "ecb(aes)",
746 .cra_driver_name = "mv-ecb-aes",
748 .cra_flags = CRYPTO_ALG_KERN_DRIVER_ONLY | CRYPTO_ALG_ASYNC |
749 CRYPTO_ALG_ALLOCATES_MEMORY,
750 .cra_blocksize = AES_BLOCK_SIZE,
751 .cra_ctxsize = sizeof(struct mv_cesa_aes_ctx),
753 .cra_module = THIS_MODULE,
754 .cra_init = mv_cesa_skcipher_cra_init,
755 .cra_exit = mv_cesa_skcipher_cra_exit,
759 static int mv_cesa_cbc_aes_op(struct skcipher_request *req,
760 struct mv_cesa_op_ctx *tmpl)
762 mv_cesa_update_op_cfg(tmpl, CESA_SA_DESC_CFG_CRYPTCM_CBC,
763 CESA_SA_DESC_CFG_CRYPTCM_MSK);
764 memcpy(tmpl->ctx.skcipher.iv, req->iv, AES_BLOCK_SIZE);
766 return mv_cesa_aes_op(req, tmpl);
769 static int mv_cesa_cbc_aes_encrypt(struct skcipher_request *req)
771 struct mv_cesa_op_ctx tmpl;
773 mv_cesa_set_op_cfg(&tmpl, CESA_SA_DESC_CFG_DIR_ENC);
775 return mv_cesa_cbc_aes_op(req, &tmpl);
778 static int mv_cesa_cbc_aes_decrypt(struct skcipher_request *req)
780 struct mv_cesa_op_ctx tmpl;
782 mv_cesa_set_op_cfg(&tmpl, CESA_SA_DESC_CFG_DIR_DEC);
784 return mv_cesa_cbc_aes_op(req, &tmpl);
787 struct skcipher_alg mv_cesa_cbc_aes_alg = {
788 .setkey = mv_cesa_aes_setkey,
789 .encrypt = mv_cesa_cbc_aes_encrypt,
790 .decrypt = mv_cesa_cbc_aes_decrypt,
791 .min_keysize = AES_MIN_KEY_SIZE,
792 .max_keysize = AES_MAX_KEY_SIZE,
793 .ivsize = AES_BLOCK_SIZE,
795 .cra_name = "cbc(aes)",
796 .cra_driver_name = "mv-cbc-aes",
798 .cra_flags = CRYPTO_ALG_KERN_DRIVER_ONLY | CRYPTO_ALG_ASYNC |
799 CRYPTO_ALG_ALLOCATES_MEMORY,
800 .cra_blocksize = AES_BLOCK_SIZE,
801 .cra_ctxsize = sizeof(struct mv_cesa_aes_ctx),
803 .cra_module = THIS_MODULE,
804 .cra_init = mv_cesa_skcipher_cra_init,
805 .cra_exit = mv_cesa_skcipher_cra_exit,