2 * Hash algorithms supported by the CESA: MD5, SHA1 and SHA256.
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/md5.h>
16 #include <crypto/sha.h>
20 struct mv_cesa_ahash_dma_iter {
21 struct mv_cesa_dma_iter base;
22 struct mv_cesa_sg_dma_iter src;
26 mv_cesa_ahash_req_iter_init(struct mv_cesa_ahash_dma_iter *iter,
27 struct ahash_request *req)
29 struct mv_cesa_ahash_req *creq = ahash_request_ctx(req);
30 unsigned int len = req->nbytes + creq->cache_ptr;
33 len &= ~CESA_HASH_BLOCK_SIZE_MSK;
35 mv_cesa_req_dma_iter_init(&iter->base, len);
36 mv_cesa_sg_dma_iter_init(&iter->src, req->src, DMA_TO_DEVICE);
37 iter->src.op_offset = creq->cache_ptr;
41 mv_cesa_ahash_req_iter_next_op(struct mv_cesa_ahash_dma_iter *iter)
43 iter->src.op_offset = 0;
45 return mv_cesa_req_dma_iter_next_op(&iter->base);
48 static inline int mv_cesa_ahash_dma_alloc_cache(struct mv_cesa_ahash_req *creq,
51 struct mv_cesa_ahash_dma_req *dreq = &creq->req.dma;
53 creq->cache = dma_pool_alloc(cesa_dev->dma->cache_pool, flags,
61 static inline int mv_cesa_ahash_std_alloc_cache(struct mv_cesa_ahash_req *creq,
64 creq->cache = kzalloc(CESA_MAX_HASH_BLOCK_SIZE, flags);
71 static int mv_cesa_ahash_alloc_cache(struct ahash_request *req)
73 struct mv_cesa_ahash_req *creq = ahash_request_ctx(req);
74 gfp_t flags = (req->base.flags & CRYPTO_TFM_REQ_MAY_SLEEP) ?
75 GFP_KERNEL : GFP_ATOMIC;
81 if (creq->req.base.type == CESA_DMA_REQ)
82 ret = mv_cesa_ahash_dma_alloc_cache(creq, flags);
84 ret = mv_cesa_ahash_std_alloc_cache(creq, flags);
89 static inline void mv_cesa_ahash_dma_free_cache(struct mv_cesa_ahash_req *creq)
91 dma_pool_free(cesa_dev->dma->cache_pool, creq->cache,
92 creq->req.dma.cache_dma);
95 static inline void mv_cesa_ahash_std_free_cache(struct mv_cesa_ahash_req *creq)
100 static void mv_cesa_ahash_free_cache(struct mv_cesa_ahash_req *creq)
105 if (creq->req.base.type == CESA_DMA_REQ)
106 mv_cesa_ahash_dma_free_cache(creq);
108 mv_cesa_ahash_std_free_cache(creq);
113 static int mv_cesa_ahash_dma_alloc_padding(struct mv_cesa_ahash_dma_req *req,
119 req->padding = dma_pool_alloc(cesa_dev->dma->padding_pool, flags,
127 static void mv_cesa_ahash_dma_free_padding(struct mv_cesa_ahash_dma_req *req)
132 dma_pool_free(cesa_dev->dma->padding_pool, req->padding,
137 static inline void mv_cesa_ahash_dma_last_cleanup(struct ahash_request *req)
139 struct mv_cesa_ahash_req *creq = ahash_request_ctx(req);
141 mv_cesa_ahash_dma_free_padding(&creq->req.dma);
144 static inline void mv_cesa_ahash_dma_cleanup(struct ahash_request *req)
146 struct mv_cesa_ahash_req *creq = ahash_request_ctx(req);
148 dma_unmap_sg(cesa_dev->dev, req->src, creq->src_nents, DMA_TO_DEVICE);
149 mv_cesa_dma_cleanup(&creq->req.dma.base);
152 static inline void mv_cesa_ahash_cleanup(struct ahash_request *req)
154 struct mv_cesa_ahash_req *creq = ahash_request_ctx(req);
156 if (creq->req.base.type == CESA_DMA_REQ)
157 mv_cesa_ahash_dma_cleanup(req);
160 static void mv_cesa_ahash_last_cleanup(struct ahash_request *req)
162 struct mv_cesa_ahash_req *creq = ahash_request_ctx(req);
164 mv_cesa_ahash_free_cache(creq);
166 if (creq->req.base.type == CESA_DMA_REQ)
167 mv_cesa_ahash_dma_last_cleanup(req);
170 static int mv_cesa_ahash_pad_len(struct mv_cesa_ahash_req *creq)
172 unsigned int index, padlen;
174 index = creq->len & CESA_HASH_BLOCK_SIZE_MSK;
175 padlen = (index < 56) ? (56 - index) : (64 + 56 - index);
180 static int mv_cesa_ahash_pad_req(struct mv_cesa_ahash_req *creq, u8 *buf)
182 unsigned int index, padlen;
185 /* Pad out to 56 mod 64 */
186 index = creq->len & CESA_HASH_BLOCK_SIZE_MSK;
187 padlen = mv_cesa_ahash_pad_len(creq);
188 memset(buf + 1, 0, padlen - 1);
191 __le64 bits = cpu_to_le64(creq->len << 3);
192 memcpy(buf + padlen, &bits, sizeof(bits));
194 __be64 bits = cpu_to_be64(creq->len << 3);
195 memcpy(buf + padlen, &bits, sizeof(bits));
201 static void mv_cesa_ahash_std_step(struct ahash_request *req)
203 struct mv_cesa_ahash_req *creq = ahash_request_ctx(req);
204 struct mv_cesa_ahash_std_req *sreq = &creq->req.std;
205 struct mv_cesa_engine *engine = sreq->base.engine;
206 struct mv_cesa_op_ctx *op;
207 unsigned int new_cache_ptr = 0;
212 memcpy_toio(engine->sram + CESA_SA_DATA_SRAM_OFFSET,
213 creq->cache, creq->cache_ptr);
215 len = min_t(size_t, req->nbytes + creq->cache_ptr - sreq->offset,
216 CESA_SA_SRAM_PAYLOAD_SIZE);
218 if (!creq->last_req) {
219 new_cache_ptr = len & CESA_HASH_BLOCK_SIZE_MSK;
220 len &= ~CESA_HASH_BLOCK_SIZE_MSK;
223 if (len - creq->cache_ptr)
224 sreq->offset += sg_pcopy_to_buffer(req->src, creq->src_nents,
226 CESA_SA_DATA_SRAM_OFFSET +
228 len - creq->cache_ptr,
233 frag_mode = mv_cesa_get_op_cfg(op) & CESA_SA_DESC_CFG_FRAG_MSK;
235 if (creq->last_req && sreq->offset == req->nbytes &&
236 creq->len <= CESA_SA_DESC_MAC_SRC_TOTAL_LEN_MAX) {
237 if (frag_mode == CESA_SA_DESC_CFG_FIRST_FRAG)
238 frag_mode = CESA_SA_DESC_CFG_NOT_FRAG;
239 else if (frag_mode == CESA_SA_DESC_CFG_MID_FRAG)
240 frag_mode = CESA_SA_DESC_CFG_LAST_FRAG;
243 if (frag_mode == CESA_SA_DESC_CFG_NOT_FRAG ||
244 frag_mode == CESA_SA_DESC_CFG_LAST_FRAG) {
246 creq->len <= CESA_SA_DESC_MAC_SRC_TOTAL_LEN_MAX) {
247 mv_cesa_set_mac_op_total_len(op, creq->len);
249 int trailerlen = mv_cesa_ahash_pad_len(creq) + 8;
251 if (len + trailerlen > CESA_SA_SRAM_PAYLOAD_SIZE) {
252 len &= CESA_HASH_BLOCK_SIZE_MSK;
253 new_cache_ptr = 64 - trailerlen;
254 memcpy_fromio(creq->cache,
256 CESA_SA_DATA_SRAM_OFFSET + len,
259 len += mv_cesa_ahash_pad_req(creq,
261 CESA_SA_DATA_SRAM_OFFSET);
264 if (frag_mode == CESA_SA_DESC_CFG_LAST_FRAG)
265 frag_mode = CESA_SA_DESC_CFG_MID_FRAG;
267 frag_mode = CESA_SA_DESC_CFG_FIRST_FRAG;
271 mv_cesa_set_mac_op_frag_len(op, len);
272 mv_cesa_update_op_cfg(op, frag_mode, CESA_SA_DESC_CFG_FRAG_MSK);
274 /* FIXME: only update enc_len field */
275 memcpy_toio(engine->sram, op, sizeof(*op));
277 if (frag_mode == CESA_SA_DESC_CFG_FIRST_FRAG)
278 mv_cesa_update_op_cfg(op, CESA_SA_DESC_CFG_MID_FRAG,
279 CESA_SA_DESC_CFG_FRAG_MSK);
281 creq->cache_ptr = new_cache_ptr;
283 mv_cesa_set_int_mask(engine, CESA_SA_INT_ACCEL0_DONE);
284 writel_relaxed(CESA_SA_CFG_PARA_DIS, engine->regs + CESA_SA_CFG);
285 writel(CESA_SA_CMD_EN_CESA_SA_ACCL0, engine->regs + CESA_SA_CMD);
288 static int mv_cesa_ahash_std_process(struct ahash_request *req, u32 status)
290 struct mv_cesa_ahash_req *creq = ahash_request_ctx(req);
291 struct mv_cesa_ahash_std_req *sreq = &creq->req.std;
293 if (sreq->offset < (req->nbytes - creq->cache_ptr))
299 static inline void mv_cesa_ahash_dma_prepare(struct ahash_request *req)
301 struct mv_cesa_ahash_req *creq = ahash_request_ctx(req);
302 struct mv_cesa_tdma_req *dreq = &creq->req.dma.base;
304 mv_cesa_dma_prepare(dreq, dreq->base.engine);
307 static void mv_cesa_ahash_std_prepare(struct ahash_request *req)
309 struct mv_cesa_ahash_req *creq = ahash_request_ctx(req);
310 struct mv_cesa_ahash_std_req *sreq = &creq->req.std;
311 struct mv_cesa_engine *engine = sreq->base.engine;
314 mv_cesa_adjust_op(engine, &creq->op_tmpl);
315 memcpy_toio(engine->sram, &creq->op_tmpl, sizeof(creq->op_tmpl));
318 static void mv_cesa_ahash_step(struct crypto_async_request *req)
320 struct ahash_request *ahashreq = ahash_request_cast(req);
321 struct mv_cesa_ahash_req *creq = ahash_request_ctx(ahashreq);
323 if (creq->req.base.type == CESA_DMA_REQ)
324 mv_cesa_dma_step(&creq->req.dma.base);
326 mv_cesa_ahash_std_step(ahashreq);
329 static int mv_cesa_ahash_process(struct crypto_async_request *req, u32 status)
331 struct ahash_request *ahashreq = ahash_request_cast(req);
332 struct mv_cesa_ahash_req *creq = ahash_request_ctx(ahashreq);
333 struct mv_cesa_engine *engine = creq->req.base.engine;
334 unsigned int digsize;
337 if (creq->req.base.type == CESA_DMA_REQ)
338 ret = mv_cesa_dma_process(&creq->req.dma.base, status);
340 ret = mv_cesa_ahash_std_process(ahashreq, status);
342 if (ret == -EINPROGRESS)
345 digsize = crypto_ahash_digestsize(crypto_ahash_reqtfm(ahashreq));
346 for (i = 0; i < digsize / 4; i++)
347 creq->state[i] = readl_relaxed(engine->regs + CESA_IVDIG(i));
350 sg_pcopy_to_buffer(ahashreq->src, creq->src_nents,
353 ahashreq->nbytes - creq->cache_ptr);
355 if (creq->last_req) {
357 * Hardware's MD5 digest is in little endian format, but
358 * SHA in big endian format
361 __le32 *result = (void *)ahashreq->result;
363 for (i = 0; i < digsize / 4; i++)
364 result[i] = cpu_to_le32(creq->state[i]);
366 __be32 *result = (void *)ahashreq->result;
368 for (i = 0; i < digsize / 4; i++)
369 result[i] = cpu_to_be32(creq->state[i]);
376 static void mv_cesa_ahash_prepare(struct crypto_async_request *req,
377 struct mv_cesa_engine *engine)
379 struct ahash_request *ahashreq = ahash_request_cast(req);
380 struct mv_cesa_ahash_req *creq = ahash_request_ctx(ahashreq);
381 unsigned int digsize;
384 creq->req.base.engine = engine;
386 if (creq->req.base.type == CESA_DMA_REQ)
387 mv_cesa_ahash_dma_prepare(ahashreq);
389 mv_cesa_ahash_std_prepare(ahashreq);
391 digsize = crypto_ahash_digestsize(crypto_ahash_reqtfm(ahashreq));
392 for (i = 0; i < digsize / 4; i++)
393 writel_relaxed(creq->state[i], engine->regs + CESA_IVDIG(i));
396 static void mv_cesa_ahash_req_cleanup(struct crypto_async_request *req)
398 struct ahash_request *ahashreq = ahash_request_cast(req);
399 struct mv_cesa_ahash_req *creq = ahash_request_ctx(ahashreq);
402 mv_cesa_ahash_last_cleanup(ahashreq);
404 mv_cesa_ahash_cleanup(ahashreq);
407 static const struct mv_cesa_req_ops mv_cesa_ahash_req_ops = {
408 .step = mv_cesa_ahash_step,
409 .process = mv_cesa_ahash_process,
410 .prepare = mv_cesa_ahash_prepare,
411 .cleanup = mv_cesa_ahash_req_cleanup,
414 static int mv_cesa_ahash_init(struct ahash_request *req,
415 struct mv_cesa_op_ctx *tmpl, bool algo_le)
417 struct mv_cesa_ahash_req *creq = ahash_request_ctx(req);
419 memset(creq, 0, sizeof(*creq));
420 mv_cesa_update_op_cfg(tmpl,
421 CESA_SA_DESC_CFG_OP_MAC_ONLY |
422 CESA_SA_DESC_CFG_FIRST_FRAG,
423 CESA_SA_DESC_CFG_OP_MSK |
424 CESA_SA_DESC_CFG_FRAG_MSK);
425 mv_cesa_set_mac_op_total_len(tmpl, 0);
426 mv_cesa_set_mac_op_frag_len(tmpl, 0);
427 creq->op_tmpl = *tmpl;
429 creq->algo_le = algo_le;
434 static inline int mv_cesa_ahash_cra_init(struct crypto_tfm *tfm)
436 struct mv_cesa_hash_ctx *ctx = crypto_tfm_ctx(tfm);
438 ctx->base.ops = &mv_cesa_ahash_req_ops;
440 crypto_ahash_set_reqsize(__crypto_ahash_cast(tfm),
441 sizeof(struct mv_cesa_ahash_req));
445 static int mv_cesa_ahash_cache_req(struct ahash_request *req, bool *cached)
447 struct mv_cesa_ahash_req *creq = ahash_request_ctx(req);
450 if (((creq->cache_ptr + req->nbytes) & CESA_HASH_BLOCK_SIZE_MSK) &&
452 ret = mv_cesa_ahash_alloc_cache(req);
457 if (creq->cache_ptr + req->nbytes < 64 && !creq->last_req) {
463 sg_pcopy_to_buffer(req->src, creq->src_nents,
464 creq->cache + creq->cache_ptr,
467 creq->cache_ptr += req->nbytes;
473 static struct mv_cesa_op_ctx *
474 mv_cesa_dma_add_frag(struct mv_cesa_tdma_chain *chain,
475 struct mv_cesa_op_ctx *tmpl, unsigned int frag_len,
478 struct mv_cesa_op_ctx *op;
481 op = mv_cesa_dma_add_op(chain, tmpl, false, flags);
485 /* Set the operation block fragment length. */
486 mv_cesa_set_mac_op_frag_len(op, frag_len);
488 /* Append dummy desc to launch operation */
489 ret = mv_cesa_dma_add_dummy_launch(chain, flags);
493 if (mv_cesa_mac_op_is_first_frag(tmpl))
494 mv_cesa_update_op_cfg(tmpl,
495 CESA_SA_DESC_CFG_MID_FRAG,
496 CESA_SA_DESC_CFG_FRAG_MSK);
502 mv_cesa_ahash_dma_add_cache(struct mv_cesa_tdma_chain *chain,
503 struct mv_cesa_ahash_dma_iter *dma_iter,
504 struct mv_cesa_ahash_req *creq,
507 struct mv_cesa_ahash_dma_req *ahashdreq = &creq->req.dma;
509 if (!creq->cache_ptr)
512 return mv_cesa_dma_add_data_transfer(chain,
513 CESA_SA_DATA_SRAM_OFFSET,
514 ahashdreq->cache_dma,
516 CESA_TDMA_DST_IN_SRAM,
520 static struct mv_cesa_op_ctx *
521 mv_cesa_ahash_dma_last_req(struct mv_cesa_tdma_chain *chain,
522 struct mv_cesa_ahash_dma_iter *dma_iter,
523 struct mv_cesa_ahash_req *creq,
524 unsigned int frag_len, gfp_t flags)
526 struct mv_cesa_ahash_dma_req *ahashdreq = &creq->req.dma;
527 unsigned int len, trailerlen, padoff = 0;
528 struct mv_cesa_op_ctx *op;
532 * If the transfer is smaller than our maximum length, and we have
533 * some data outstanding, we can ask the engine to finish the hash.
535 if (creq->len <= CESA_SA_DESC_MAC_SRC_TOTAL_LEN_MAX && frag_len) {
536 op = mv_cesa_dma_add_frag(chain, &creq->op_tmpl, frag_len,
541 mv_cesa_set_mac_op_total_len(op, creq->len);
542 mv_cesa_update_op_cfg(op, mv_cesa_mac_op_is_first_frag(op) ?
543 CESA_SA_DESC_CFG_NOT_FRAG :
544 CESA_SA_DESC_CFG_LAST_FRAG,
545 CESA_SA_DESC_CFG_FRAG_MSK);
551 * The request is longer than the engine can handle, or we have
552 * no data outstanding. Manually generate the padding, adding it
553 * as a "mid" fragment.
555 ret = mv_cesa_ahash_dma_alloc_padding(ahashdreq, flags);
559 trailerlen = mv_cesa_ahash_pad_req(creq, ahashdreq->padding);
561 len = min(CESA_SA_SRAM_PAYLOAD_SIZE - frag_len, trailerlen);
563 ret = mv_cesa_dma_add_data_transfer(chain,
564 CESA_SA_DATA_SRAM_OFFSET +
566 ahashdreq->padding_dma,
567 len, CESA_TDMA_DST_IN_SRAM,
572 op = mv_cesa_dma_add_frag(chain, &creq->op_tmpl, frag_len + len,
577 if (len == trailerlen)
583 ret = mv_cesa_dma_add_data_transfer(chain,
584 CESA_SA_DATA_SRAM_OFFSET,
585 ahashdreq->padding_dma +
588 CESA_TDMA_DST_IN_SRAM,
593 return mv_cesa_dma_add_frag(chain, &creq->op_tmpl, trailerlen - padoff,
597 static int mv_cesa_ahash_dma_req_init(struct ahash_request *req)
599 struct mv_cesa_ahash_req *creq = ahash_request_ctx(req);
600 gfp_t flags = (req->base.flags & CRYPTO_TFM_REQ_MAY_SLEEP) ?
601 GFP_KERNEL : GFP_ATOMIC;
602 struct mv_cesa_ahash_dma_req *ahashdreq = &creq->req.dma;
603 struct mv_cesa_tdma_req *dreq = &ahashdreq->base;
604 struct mv_cesa_ahash_dma_iter iter;
605 struct mv_cesa_op_ctx *op = NULL;
606 unsigned int frag_len;
609 dreq->chain.first = NULL;
610 dreq->chain.last = NULL;
612 if (creq->src_nents) {
613 ret = dma_map_sg(cesa_dev->dev, req->src, creq->src_nents,
621 mv_cesa_tdma_desc_iter_init(&dreq->chain);
622 mv_cesa_ahash_req_iter_init(&iter, req);
625 * Add the cache (left-over data from a previous block) first.
626 * This will never overflow the SRAM size.
628 ret = mv_cesa_ahash_dma_add_cache(&dreq->chain, &iter, creq, flags);
634 * Add all the new data, inserting an operation block and
635 * launch command between each full SRAM block-worth of
636 * data. We intentionally do not add the final op block.
639 ret = mv_cesa_dma_add_op_transfers(&dreq->chain,
645 frag_len = iter.base.op_len;
647 if (!mv_cesa_ahash_req_iter_next_op(&iter))
650 op = mv_cesa_dma_add_frag(&dreq->chain, &creq->op_tmpl,
658 /* Account for the data that was in the cache. */
659 frag_len = iter.base.op_len;
663 * At this point, frag_len indicates whether we have any data
664 * outstanding which needs an operation. Queue up the final
665 * operation, which depends whether this is the final request.
668 op = mv_cesa_ahash_dma_last_req(&dreq->chain, &iter, creq,
671 op = mv_cesa_dma_add_frag(&dreq->chain, &creq->op_tmpl,
680 /* Add dummy desc to wait for crypto operation end */
681 ret = mv_cesa_dma_add_dummy_end(&dreq->chain, flags);
687 creq->cache_ptr = req->nbytes + creq->cache_ptr -
695 mv_cesa_dma_cleanup(dreq);
696 dma_unmap_sg(cesa_dev->dev, req->src, creq->src_nents, DMA_TO_DEVICE);
699 mv_cesa_ahash_last_cleanup(req);
704 static int mv_cesa_ahash_req_init(struct ahash_request *req, bool *cached)
706 struct mv_cesa_ahash_req *creq = ahash_request_ctx(req);
709 if (cesa_dev->caps->has_tdma)
710 creq->req.base.type = CESA_DMA_REQ;
712 creq->req.base.type = CESA_STD_REQ;
714 creq->src_nents = sg_nents_for_len(req->src, req->nbytes);
716 ret = mv_cesa_ahash_cache_req(req, cached);
723 if (creq->req.base.type == CESA_DMA_REQ)
724 ret = mv_cesa_ahash_dma_req_init(req);
729 static int mv_cesa_ahash_update(struct ahash_request *req)
731 struct mv_cesa_ahash_req *creq = ahash_request_ctx(req);
735 creq->len += req->nbytes;
736 ret = mv_cesa_ahash_req_init(req, &cached);
743 ret = mv_cesa_queue_req(&req->base);
744 if (mv_cesa_req_needs_cleanup(&req->base, ret))
745 mv_cesa_ahash_cleanup(req);
750 static int mv_cesa_ahash_final(struct ahash_request *req)
752 struct mv_cesa_ahash_req *creq = ahash_request_ctx(req);
753 struct mv_cesa_op_ctx *tmpl = &creq->op_tmpl;
757 mv_cesa_set_mac_op_total_len(tmpl, creq->len);
758 creq->last_req = true;
761 ret = mv_cesa_ahash_req_init(req, &cached);
768 ret = mv_cesa_queue_req(&req->base);
769 if (mv_cesa_req_needs_cleanup(&req->base, ret))
770 mv_cesa_ahash_cleanup(req);
775 static int mv_cesa_ahash_finup(struct ahash_request *req)
777 struct mv_cesa_ahash_req *creq = ahash_request_ctx(req);
778 struct mv_cesa_op_ctx *tmpl = &creq->op_tmpl;
782 creq->len += req->nbytes;
783 mv_cesa_set_mac_op_total_len(tmpl, creq->len);
784 creq->last_req = true;
786 ret = mv_cesa_ahash_req_init(req, &cached);
793 ret = mv_cesa_queue_req(&req->base);
794 if (mv_cesa_req_needs_cleanup(&req->base, ret))
795 mv_cesa_ahash_cleanup(req);
800 static int mv_cesa_ahash_export(struct ahash_request *req, void *hash,
801 u64 *len, void *cache)
803 struct crypto_ahash *ahash = crypto_ahash_reqtfm(req);
804 struct mv_cesa_ahash_req *creq = ahash_request_ctx(req);
805 unsigned int digsize = crypto_ahash_digestsize(ahash);
806 unsigned int blocksize;
808 blocksize = crypto_ahash_blocksize(ahash);
811 memcpy(hash, creq->state, digsize);
812 memset(cache, 0, blocksize);
814 memcpy(cache, creq->cache, creq->cache_ptr);
819 static int mv_cesa_ahash_import(struct ahash_request *req, const void *hash,
820 u64 len, const void *cache)
822 struct crypto_ahash *ahash = crypto_ahash_reqtfm(req);
823 struct mv_cesa_ahash_req *creq = ahash_request_ctx(req);
824 unsigned int digsize = crypto_ahash_digestsize(ahash);
825 unsigned int blocksize;
826 unsigned int cache_ptr;
829 ret = crypto_ahash_init(req);
833 blocksize = crypto_ahash_blocksize(ahash);
834 if (len >= blocksize)
835 mv_cesa_update_op_cfg(&creq->op_tmpl,
836 CESA_SA_DESC_CFG_MID_FRAG,
837 CESA_SA_DESC_CFG_FRAG_MSK);
840 memcpy(creq->state, hash, digsize);
843 cache_ptr = do_div(len, blocksize);
847 ret = mv_cesa_ahash_alloc_cache(req);
851 memcpy(creq->cache, cache, cache_ptr);
852 creq->cache_ptr = cache_ptr;
857 static int mv_cesa_md5_init(struct ahash_request *req)
859 struct mv_cesa_op_ctx tmpl = { };
861 mv_cesa_set_op_cfg(&tmpl, CESA_SA_DESC_CFG_MACM_MD5);
863 mv_cesa_ahash_init(req, &tmpl, true);
868 static int mv_cesa_md5_export(struct ahash_request *req, void *out)
870 struct md5_state *out_state = out;
872 return mv_cesa_ahash_export(req, out_state->hash,
873 &out_state->byte_count, out_state->block);
876 static int mv_cesa_md5_import(struct ahash_request *req, const void *in)
878 const struct md5_state *in_state = in;
880 return mv_cesa_ahash_import(req, in_state->hash, in_state->byte_count,
884 static int mv_cesa_md5_digest(struct ahash_request *req)
888 ret = mv_cesa_md5_init(req);
892 return mv_cesa_ahash_finup(req);
895 struct ahash_alg mv_md5_alg = {
896 .init = mv_cesa_md5_init,
897 .update = mv_cesa_ahash_update,
898 .final = mv_cesa_ahash_final,
899 .finup = mv_cesa_ahash_finup,
900 .digest = mv_cesa_md5_digest,
901 .export = mv_cesa_md5_export,
902 .import = mv_cesa_md5_import,
904 .digestsize = MD5_DIGEST_SIZE,
905 .statesize = sizeof(struct md5_state),
908 .cra_driver_name = "mv-md5",
910 .cra_flags = CRYPTO_ALG_ASYNC |
911 CRYPTO_ALG_KERN_DRIVER_ONLY,
912 .cra_blocksize = MD5_HMAC_BLOCK_SIZE,
913 .cra_ctxsize = sizeof(struct mv_cesa_hash_ctx),
914 .cra_init = mv_cesa_ahash_cra_init,
915 .cra_module = THIS_MODULE,
920 static int mv_cesa_sha1_init(struct ahash_request *req)
922 struct mv_cesa_op_ctx tmpl = { };
924 mv_cesa_set_op_cfg(&tmpl, CESA_SA_DESC_CFG_MACM_SHA1);
926 mv_cesa_ahash_init(req, &tmpl, false);
931 static int mv_cesa_sha1_export(struct ahash_request *req, void *out)
933 struct sha1_state *out_state = out;
935 return mv_cesa_ahash_export(req, out_state->state, &out_state->count,
939 static int mv_cesa_sha1_import(struct ahash_request *req, const void *in)
941 const struct sha1_state *in_state = in;
943 return mv_cesa_ahash_import(req, in_state->state, in_state->count,
947 static int mv_cesa_sha1_digest(struct ahash_request *req)
951 ret = mv_cesa_sha1_init(req);
955 return mv_cesa_ahash_finup(req);
958 struct ahash_alg mv_sha1_alg = {
959 .init = mv_cesa_sha1_init,
960 .update = mv_cesa_ahash_update,
961 .final = mv_cesa_ahash_final,
962 .finup = mv_cesa_ahash_finup,
963 .digest = mv_cesa_sha1_digest,
964 .export = mv_cesa_sha1_export,
965 .import = mv_cesa_sha1_import,
967 .digestsize = SHA1_DIGEST_SIZE,
968 .statesize = sizeof(struct sha1_state),
971 .cra_driver_name = "mv-sha1",
973 .cra_flags = CRYPTO_ALG_ASYNC |
974 CRYPTO_ALG_KERN_DRIVER_ONLY,
975 .cra_blocksize = SHA1_BLOCK_SIZE,
976 .cra_ctxsize = sizeof(struct mv_cesa_hash_ctx),
977 .cra_init = mv_cesa_ahash_cra_init,
978 .cra_module = THIS_MODULE,
983 static int mv_cesa_sha256_init(struct ahash_request *req)
985 struct mv_cesa_op_ctx tmpl = { };
987 mv_cesa_set_op_cfg(&tmpl, CESA_SA_DESC_CFG_MACM_SHA256);
989 mv_cesa_ahash_init(req, &tmpl, false);
994 static int mv_cesa_sha256_digest(struct ahash_request *req)
998 ret = mv_cesa_sha256_init(req);
1002 return mv_cesa_ahash_finup(req);
1005 static int mv_cesa_sha256_export(struct ahash_request *req, void *out)
1007 struct sha256_state *out_state = out;
1009 return mv_cesa_ahash_export(req, out_state->state, &out_state->count,
1013 static int mv_cesa_sha256_import(struct ahash_request *req, const void *in)
1015 const struct sha256_state *in_state = in;
1017 return mv_cesa_ahash_import(req, in_state->state, in_state->count,
1021 struct ahash_alg mv_sha256_alg = {
1022 .init = mv_cesa_sha256_init,
1023 .update = mv_cesa_ahash_update,
1024 .final = mv_cesa_ahash_final,
1025 .finup = mv_cesa_ahash_finup,
1026 .digest = mv_cesa_sha256_digest,
1027 .export = mv_cesa_sha256_export,
1028 .import = mv_cesa_sha256_import,
1030 .digestsize = SHA256_DIGEST_SIZE,
1031 .statesize = sizeof(struct sha256_state),
1033 .cra_name = "sha256",
1034 .cra_driver_name = "mv-sha256",
1035 .cra_priority = 300,
1036 .cra_flags = CRYPTO_ALG_ASYNC |
1037 CRYPTO_ALG_KERN_DRIVER_ONLY,
1038 .cra_blocksize = SHA256_BLOCK_SIZE,
1039 .cra_ctxsize = sizeof(struct mv_cesa_hash_ctx),
1040 .cra_init = mv_cesa_ahash_cra_init,
1041 .cra_module = THIS_MODULE,
1046 struct mv_cesa_ahash_result {
1047 struct completion completion;
1051 static void mv_cesa_hmac_ahash_complete(struct crypto_async_request *req,
1054 struct mv_cesa_ahash_result *result = req->data;
1056 if (error == -EINPROGRESS)
1059 result->error = error;
1060 complete(&result->completion);
1063 static int mv_cesa_ahmac_iv_state_init(struct ahash_request *req, u8 *pad,
1064 void *state, unsigned int blocksize)
1066 struct mv_cesa_ahash_result result;
1067 struct scatterlist sg;
1070 ahash_request_set_callback(req, CRYPTO_TFM_REQ_MAY_BACKLOG,
1071 mv_cesa_hmac_ahash_complete, &result);
1072 sg_init_one(&sg, pad, blocksize);
1073 ahash_request_set_crypt(req, &sg, pad, blocksize);
1074 init_completion(&result.completion);
1076 ret = crypto_ahash_init(req);
1080 ret = crypto_ahash_update(req);
1081 if (ret && ret != -EINPROGRESS)
1084 wait_for_completion_interruptible(&result.completion);
1086 return result.error;
1088 ret = crypto_ahash_export(req, state);
1095 static int mv_cesa_ahmac_pad_init(struct ahash_request *req,
1096 const u8 *key, unsigned int keylen,
1098 unsigned int blocksize)
1100 struct mv_cesa_ahash_result result;
1101 struct scatterlist sg;
1105 if (keylen <= blocksize) {
1106 memcpy(ipad, key, keylen);
1108 u8 *keydup = kmemdup(key, keylen, GFP_KERNEL);
1113 ahash_request_set_callback(req, CRYPTO_TFM_REQ_MAY_BACKLOG,
1114 mv_cesa_hmac_ahash_complete,
1116 sg_init_one(&sg, keydup, keylen);
1117 ahash_request_set_crypt(req, &sg, ipad, keylen);
1118 init_completion(&result.completion);
1120 ret = crypto_ahash_digest(req);
1121 if (ret == -EINPROGRESS) {
1122 wait_for_completion_interruptible(&result.completion);
1126 /* Set the memory region to 0 to avoid any leak. */
1127 memset(keydup, 0, keylen);
1133 keylen = crypto_ahash_digestsize(crypto_ahash_reqtfm(req));
1136 memset(ipad + keylen, 0, blocksize - keylen);
1137 memcpy(opad, ipad, blocksize);
1139 for (i = 0; i < blocksize; i++) {
1147 static int mv_cesa_ahmac_setkey(const char *hash_alg_name,
1148 const u8 *key, unsigned int keylen,
1149 void *istate, void *ostate)
1151 struct ahash_request *req;
1152 struct crypto_ahash *tfm;
1153 unsigned int blocksize;
1158 tfm = crypto_alloc_ahash(hash_alg_name, CRYPTO_ALG_TYPE_AHASH,
1159 CRYPTO_ALG_TYPE_AHASH_MASK);
1161 return PTR_ERR(tfm);
1163 req = ahash_request_alloc(tfm, GFP_KERNEL);
1169 crypto_ahash_clear_flags(tfm, ~0);
1171 blocksize = crypto_tfm_alg_blocksize(crypto_ahash_tfm(tfm));
1173 ipad = kzalloc(2 * blocksize, GFP_KERNEL);
1179 opad = ipad + blocksize;
1181 ret = mv_cesa_ahmac_pad_init(req, key, keylen, ipad, opad, blocksize);
1185 ret = mv_cesa_ahmac_iv_state_init(req, ipad, istate, blocksize);
1189 ret = mv_cesa_ahmac_iv_state_init(req, opad, ostate, blocksize);
1194 ahash_request_free(req);
1196 crypto_free_ahash(tfm);
1201 static int mv_cesa_ahmac_cra_init(struct crypto_tfm *tfm)
1203 struct mv_cesa_hmac_ctx *ctx = crypto_tfm_ctx(tfm);
1205 ctx->base.ops = &mv_cesa_ahash_req_ops;
1207 crypto_ahash_set_reqsize(__crypto_ahash_cast(tfm),
1208 sizeof(struct mv_cesa_ahash_req));
1212 static int mv_cesa_ahmac_md5_init(struct ahash_request *req)
1214 struct mv_cesa_hmac_ctx *ctx = crypto_tfm_ctx(req->base.tfm);
1215 struct mv_cesa_op_ctx tmpl = { };
1217 mv_cesa_set_op_cfg(&tmpl, CESA_SA_DESC_CFG_MACM_HMAC_MD5);
1218 memcpy(tmpl.ctx.hash.iv, ctx->iv, sizeof(ctx->iv));
1220 mv_cesa_ahash_init(req, &tmpl, true);
1225 static int mv_cesa_ahmac_md5_setkey(struct crypto_ahash *tfm, const u8 *key,
1226 unsigned int keylen)
1228 struct mv_cesa_hmac_ctx *ctx = crypto_tfm_ctx(crypto_ahash_tfm(tfm));
1229 struct md5_state istate, ostate;
1232 ret = mv_cesa_ahmac_setkey("mv-md5", key, keylen, &istate, &ostate);
1236 for (i = 0; i < ARRAY_SIZE(istate.hash); i++)
1237 ctx->iv[i] = be32_to_cpu(istate.hash[i]);
1239 for (i = 0; i < ARRAY_SIZE(ostate.hash); i++)
1240 ctx->iv[i + 8] = be32_to_cpu(ostate.hash[i]);
1245 static int mv_cesa_ahmac_md5_digest(struct ahash_request *req)
1249 ret = mv_cesa_ahmac_md5_init(req);
1253 return mv_cesa_ahash_finup(req);
1256 struct ahash_alg mv_ahmac_md5_alg = {
1257 .init = mv_cesa_ahmac_md5_init,
1258 .update = mv_cesa_ahash_update,
1259 .final = mv_cesa_ahash_final,
1260 .finup = mv_cesa_ahash_finup,
1261 .digest = mv_cesa_ahmac_md5_digest,
1262 .setkey = mv_cesa_ahmac_md5_setkey,
1263 .export = mv_cesa_md5_export,
1264 .import = mv_cesa_md5_import,
1266 .digestsize = MD5_DIGEST_SIZE,
1267 .statesize = sizeof(struct md5_state),
1269 .cra_name = "hmac(md5)",
1270 .cra_driver_name = "mv-hmac-md5",
1271 .cra_priority = 300,
1272 .cra_flags = CRYPTO_ALG_ASYNC |
1273 CRYPTO_ALG_KERN_DRIVER_ONLY,
1274 .cra_blocksize = MD5_HMAC_BLOCK_SIZE,
1275 .cra_ctxsize = sizeof(struct mv_cesa_hmac_ctx),
1276 .cra_init = mv_cesa_ahmac_cra_init,
1277 .cra_module = THIS_MODULE,
1282 static int mv_cesa_ahmac_sha1_init(struct ahash_request *req)
1284 struct mv_cesa_hmac_ctx *ctx = crypto_tfm_ctx(req->base.tfm);
1285 struct mv_cesa_op_ctx tmpl = { };
1287 mv_cesa_set_op_cfg(&tmpl, CESA_SA_DESC_CFG_MACM_HMAC_SHA1);
1288 memcpy(tmpl.ctx.hash.iv, ctx->iv, sizeof(ctx->iv));
1290 mv_cesa_ahash_init(req, &tmpl, false);
1295 static int mv_cesa_ahmac_sha1_setkey(struct crypto_ahash *tfm, const u8 *key,
1296 unsigned int keylen)
1298 struct mv_cesa_hmac_ctx *ctx = crypto_tfm_ctx(crypto_ahash_tfm(tfm));
1299 struct sha1_state istate, ostate;
1302 ret = mv_cesa_ahmac_setkey("mv-sha1", key, keylen, &istate, &ostate);
1306 for (i = 0; i < ARRAY_SIZE(istate.state); i++)
1307 ctx->iv[i] = be32_to_cpu(istate.state[i]);
1309 for (i = 0; i < ARRAY_SIZE(ostate.state); i++)
1310 ctx->iv[i + 8] = be32_to_cpu(ostate.state[i]);
1315 static int mv_cesa_ahmac_sha1_digest(struct ahash_request *req)
1319 ret = mv_cesa_ahmac_sha1_init(req);
1323 return mv_cesa_ahash_finup(req);
1326 struct ahash_alg mv_ahmac_sha1_alg = {
1327 .init = mv_cesa_ahmac_sha1_init,
1328 .update = mv_cesa_ahash_update,
1329 .final = mv_cesa_ahash_final,
1330 .finup = mv_cesa_ahash_finup,
1331 .digest = mv_cesa_ahmac_sha1_digest,
1332 .setkey = mv_cesa_ahmac_sha1_setkey,
1333 .export = mv_cesa_sha1_export,
1334 .import = mv_cesa_sha1_import,
1336 .digestsize = SHA1_DIGEST_SIZE,
1337 .statesize = sizeof(struct sha1_state),
1339 .cra_name = "hmac(sha1)",
1340 .cra_driver_name = "mv-hmac-sha1",
1341 .cra_priority = 300,
1342 .cra_flags = CRYPTO_ALG_ASYNC |
1343 CRYPTO_ALG_KERN_DRIVER_ONLY,
1344 .cra_blocksize = SHA1_BLOCK_SIZE,
1345 .cra_ctxsize = sizeof(struct mv_cesa_hmac_ctx),
1346 .cra_init = mv_cesa_ahmac_cra_init,
1347 .cra_module = THIS_MODULE,
1352 static int mv_cesa_ahmac_sha256_setkey(struct crypto_ahash *tfm, const u8 *key,
1353 unsigned int keylen)
1355 struct mv_cesa_hmac_ctx *ctx = crypto_tfm_ctx(crypto_ahash_tfm(tfm));
1356 struct sha256_state istate, ostate;
1359 ret = mv_cesa_ahmac_setkey("mv-sha256", key, keylen, &istate, &ostate);
1363 for (i = 0; i < ARRAY_SIZE(istate.state); i++)
1364 ctx->iv[i] = be32_to_cpu(istate.state[i]);
1366 for (i = 0; i < ARRAY_SIZE(ostate.state); i++)
1367 ctx->iv[i + 8] = be32_to_cpu(ostate.state[i]);
1372 static int mv_cesa_ahmac_sha256_init(struct ahash_request *req)
1374 struct mv_cesa_hmac_ctx *ctx = crypto_tfm_ctx(req->base.tfm);
1375 struct mv_cesa_op_ctx tmpl = { };
1377 mv_cesa_set_op_cfg(&tmpl, CESA_SA_DESC_CFG_MACM_HMAC_SHA256);
1378 memcpy(tmpl.ctx.hash.iv, ctx->iv, sizeof(ctx->iv));
1380 mv_cesa_ahash_init(req, &tmpl, false);
1385 static int mv_cesa_ahmac_sha256_digest(struct ahash_request *req)
1389 ret = mv_cesa_ahmac_sha256_init(req);
1393 return mv_cesa_ahash_finup(req);
1396 struct ahash_alg mv_ahmac_sha256_alg = {
1397 .init = mv_cesa_ahmac_sha256_init,
1398 .update = mv_cesa_ahash_update,
1399 .final = mv_cesa_ahash_final,
1400 .finup = mv_cesa_ahash_finup,
1401 .digest = mv_cesa_ahmac_sha256_digest,
1402 .setkey = mv_cesa_ahmac_sha256_setkey,
1403 .export = mv_cesa_sha256_export,
1404 .import = mv_cesa_sha256_import,
1406 .digestsize = SHA256_DIGEST_SIZE,
1407 .statesize = sizeof(struct sha256_state),
1409 .cra_name = "hmac(sha256)",
1410 .cra_driver_name = "mv-hmac-sha256",
1411 .cra_priority = 300,
1412 .cra_flags = CRYPTO_ALG_ASYNC |
1413 CRYPTO_ALG_KERN_DRIVER_ONLY,
1414 .cra_blocksize = SHA256_BLOCK_SIZE,
1415 .cra_ctxsize = sizeof(struct mv_cesa_hmac_ctx),
1416 .cra_init = mv_cesa_ahmac_cra_init,
1417 .cra_module = THIS_MODULE,