2 * caam - Freescale FSL CAAM support for ahash functions of crypto API
4 * Copyright 2011 Freescale Semiconductor, Inc.
6 * Based on caamalg.c crypto API driver.
8 * relationship of digest job descriptor or first job descriptor after init to
11 * --------------- ---------------
12 * | JobDesc #1 |-------------------->| ShareDesc |
13 * | *(packet 1) | | (hashKey) |
14 * --------------- | (operation) |
17 * relationship of subsequent job descriptors to shared descriptors:
19 * --------------- ---------------
20 * | JobDesc #2 |-------------------->| ShareDesc |
21 * | *(packet 2) | |------------->| (hashKey) |
22 * --------------- | |-------->| (operation) |
23 * . | | | (load ctx2) |
24 * . | | ---------------
26 * | JobDesc #3 |------| |
32 * | JobDesc #4 |------------
36 * The SharedDesc never changes for a connection unless rekeyed, but
37 * each packet will likely be in a different place. So all we need
38 * to know to process the packet is where the input is, where the
39 * output goes, and what context we want to process with. Context is
40 * in the SharedDesc, packet references in the JobDesc.
42 * So, a job desc looks like:
44 * ---------------------
46 * | ShareDesc Pointer |
53 * ---------------------
60 #include "desc_constr.h"
63 #include "sg_sw_sec4.h"
66 #define CAAM_CRA_PRIORITY 3000
68 /* max hash key is max split key size */
69 #define CAAM_MAX_HASH_KEY_SIZE (SHA512_DIGEST_SIZE * 2)
71 #define CAAM_MAX_HASH_BLOCK_SIZE SHA512_BLOCK_SIZE
72 #define CAAM_MAX_HASH_DIGEST_SIZE SHA512_DIGEST_SIZE
74 /* length of descriptors text */
75 #define DESC_AHASH_BASE (3 * CAAM_CMD_SZ)
76 #define DESC_AHASH_UPDATE_LEN (6 * CAAM_CMD_SZ)
77 #define DESC_AHASH_UPDATE_FIRST_LEN (DESC_AHASH_BASE + 4 * CAAM_CMD_SZ)
78 #define DESC_AHASH_FINAL_LEN (DESC_AHASH_BASE + 5 * CAAM_CMD_SZ)
79 #define DESC_AHASH_FINUP_LEN (DESC_AHASH_BASE + 5 * CAAM_CMD_SZ)
80 #define DESC_AHASH_DIGEST_LEN (DESC_AHASH_BASE + 4 * CAAM_CMD_SZ)
82 #define DESC_HASH_MAX_USED_BYTES (DESC_AHASH_FINAL_LEN + \
83 CAAM_MAX_HASH_KEY_SIZE)
84 #define DESC_HASH_MAX_USED_LEN (DESC_HASH_MAX_USED_BYTES / CAAM_CMD_SZ)
86 /* caam context sizes for hashes: running digest + 8 */
87 #define HASH_MSG_LEN 8
88 #define MAX_CTX_LEN (HASH_MSG_LEN + SHA512_DIGEST_SIZE)
91 /* for print_hex_dumps with line references */
92 #define debug(format, arg...) printk(format, arg)
94 #define debug(format, arg...)
98 static struct list_head hash_list;
100 /* ahash per-session context */
101 struct caam_hash_ctx {
102 u32 sh_desc_update[DESC_HASH_MAX_USED_LEN] ____cacheline_aligned;
103 u32 sh_desc_update_first[DESC_HASH_MAX_USED_LEN] ____cacheline_aligned;
104 u32 sh_desc_fin[DESC_HASH_MAX_USED_LEN] ____cacheline_aligned;
105 u32 sh_desc_digest[DESC_HASH_MAX_USED_LEN] ____cacheline_aligned;
106 dma_addr_t sh_desc_update_dma ____cacheline_aligned;
107 dma_addr_t sh_desc_update_first_dma;
108 dma_addr_t sh_desc_fin_dma;
109 dma_addr_t sh_desc_digest_dma;
110 struct device *jrdev;
111 u8 key[CAAM_MAX_HASH_KEY_SIZE];
113 struct alginfo adata;
117 struct caam_hash_state {
120 u8 buf_0[CAAM_MAX_HASH_BLOCK_SIZE] ____cacheline_aligned;
122 u8 buf_1[CAAM_MAX_HASH_BLOCK_SIZE] ____cacheline_aligned;
124 u8 caam_ctx[MAX_CTX_LEN] ____cacheline_aligned;
125 int (*update)(struct ahash_request *req);
126 int (*final)(struct ahash_request *req);
127 int (*finup)(struct ahash_request *req);
131 struct caam_export_state {
132 u8 buf[CAAM_MAX_HASH_BLOCK_SIZE];
133 u8 caam_ctx[MAX_CTX_LEN];
135 int (*update)(struct ahash_request *req);
136 int (*final)(struct ahash_request *req);
137 int (*finup)(struct ahash_request *req);
140 static inline void switch_buf(struct caam_hash_state *state)
142 state->current_buf ^= 1;
145 static inline u8 *current_buf(struct caam_hash_state *state)
147 return state->current_buf ? state->buf_1 : state->buf_0;
150 static inline u8 *alt_buf(struct caam_hash_state *state)
152 return state->current_buf ? state->buf_0 : state->buf_1;
155 static inline int *current_buflen(struct caam_hash_state *state)
157 return state->current_buf ? &state->buflen_1 : &state->buflen_0;
160 static inline int *alt_buflen(struct caam_hash_state *state)
162 return state->current_buf ? &state->buflen_0 : &state->buflen_1;
165 /* Common job descriptor seq in/out ptr routines */
167 /* Map state->caam_ctx, and append seq_out_ptr command that points to it */
168 static inline int map_seq_out_ptr_ctx(u32 *desc, struct device *jrdev,
169 struct caam_hash_state *state,
172 state->ctx_dma = dma_map_single(jrdev, state->caam_ctx,
173 ctx_len, DMA_FROM_DEVICE);
174 if (dma_mapping_error(jrdev, state->ctx_dma)) {
175 dev_err(jrdev, "unable to map ctx\n");
180 append_seq_out_ptr(desc, state->ctx_dma, ctx_len, 0);
185 /* Map req->result, and append seq_out_ptr command that points to it */
186 static inline dma_addr_t map_seq_out_ptr_result(u32 *desc, struct device *jrdev,
187 u8 *result, int digestsize)
191 dst_dma = dma_map_single(jrdev, result, digestsize, DMA_FROM_DEVICE);
192 append_seq_out_ptr(desc, dst_dma, digestsize, 0);
197 /* Map current buffer in state (if length > 0) and put it in link table */
198 static inline int buf_map_to_sec4_sg(struct device *jrdev,
199 struct sec4_sg_entry *sec4_sg,
200 struct caam_hash_state *state)
202 int buflen = *current_buflen(state);
207 state->buf_dma = dma_map_single(jrdev, current_buf(state), buflen,
209 if (dma_mapping_error(jrdev, state->buf_dma)) {
210 dev_err(jrdev, "unable to map buf\n");
215 dma_to_sec4_sg_one(sec4_sg, state->buf_dma, buflen, 0);
220 /* Map state->caam_ctx, and add it to link table */
221 static inline int ctx_map_to_sec4_sg(u32 *desc, struct device *jrdev,
222 struct caam_hash_state *state, int ctx_len,
223 struct sec4_sg_entry *sec4_sg, u32 flag)
225 state->ctx_dma = dma_map_single(jrdev, state->caam_ctx, ctx_len, flag);
226 if (dma_mapping_error(jrdev, state->ctx_dma)) {
227 dev_err(jrdev, "unable to map ctx\n");
232 dma_to_sec4_sg_one(sec4_sg, state->ctx_dma, ctx_len, 0);
238 * For ahash update, final and finup (import_ctx = true)
239 * import context, read and write to seqout
240 * For ahash firsts and digest (import_ctx = false)
241 * read and write to seqout
243 static inline void ahash_gen_sh_desc(u32 *desc, u32 state, int digestsize,
244 struct caam_hash_ctx *ctx, bool import_ctx)
246 u32 op = ctx->adata.algtype;
249 init_sh_desc(desc, HDR_SHARE_SERIAL);
251 /* Append key if it has been set; ahash update excluded */
252 if ((state != OP_ALG_AS_UPDATE) && (ctx->adata.keylen)) {
253 /* Skip key loading if already shared */
254 skip_key_load = append_jump(desc, JUMP_JSL | JUMP_TEST_ALL |
257 append_key_as_imm(desc, ctx->key, ctx->adata.keylen_pad,
258 ctx->adata.keylen, CLASS_2 |
259 KEY_DEST_MDHA_SPLIT | KEY_ENC);
261 set_jump_tgt_here(desc, skip_key_load);
263 op |= OP_ALG_AAI_HMAC_PRECOMP;
266 /* If needed, import context from software */
268 append_seq_load(desc, ctx->ctx_len, LDST_CLASS_2_CCB |
269 LDST_SRCDST_BYTE_CONTEXT);
271 /* Class 2 operation */
272 append_operation(desc, op | state | OP_ALG_ENCRYPT);
275 * Load from buf and/or src and write to req->result or state->context
276 * Calculate remaining bytes to read
278 append_math_add(desc, VARSEQINLEN, SEQINLEN, REG0, CAAM_CMD_SZ);
279 /* Read remaining bytes */
280 append_seq_fifo_load(desc, 0, FIFOLD_CLASS_CLASS2 | FIFOLD_TYPE_LAST2 |
281 FIFOLD_TYPE_MSG | KEY_VLF);
282 /* Store class2 context bytes */
283 append_seq_store(desc, digestsize, LDST_CLASS_2_CCB |
284 LDST_SRCDST_BYTE_CONTEXT);
287 static int ahash_set_sh_desc(struct crypto_ahash *ahash)
289 struct caam_hash_ctx *ctx = crypto_ahash_ctx(ahash);
290 int digestsize = crypto_ahash_digestsize(ahash);
291 struct device *jrdev = ctx->jrdev;
294 /* ahash_update shared descriptor */
295 desc = ctx->sh_desc_update;
296 ahash_gen_sh_desc(desc, OP_ALG_AS_UPDATE, ctx->ctx_len, ctx, true);
297 dma_sync_single_for_device(jrdev, ctx->sh_desc_update_dma,
298 desc_bytes(desc), DMA_TO_DEVICE);
300 print_hex_dump(KERN_ERR,
301 "ahash update shdesc@"__stringify(__LINE__)": ",
302 DUMP_PREFIX_ADDRESS, 16, 4, desc, desc_bytes(desc), 1);
305 /* ahash_update_first shared descriptor */
306 desc = ctx->sh_desc_update_first;
307 ahash_gen_sh_desc(desc, OP_ALG_AS_INIT, ctx->ctx_len, ctx, false);
308 dma_sync_single_for_device(jrdev, ctx->sh_desc_update_first_dma,
309 desc_bytes(desc), DMA_TO_DEVICE);
311 print_hex_dump(KERN_ERR,
312 "ahash update first shdesc@"__stringify(__LINE__)": ",
313 DUMP_PREFIX_ADDRESS, 16, 4, desc, desc_bytes(desc), 1);
316 /* ahash_final shared descriptor */
317 desc = ctx->sh_desc_fin;
318 ahash_gen_sh_desc(desc, OP_ALG_AS_FINALIZE, digestsize, ctx, true);
319 dma_sync_single_for_device(jrdev, ctx->sh_desc_fin_dma,
320 desc_bytes(desc), DMA_TO_DEVICE);
322 print_hex_dump(KERN_ERR, "ahash final shdesc@"__stringify(__LINE__)": ",
323 DUMP_PREFIX_ADDRESS, 16, 4, desc,
324 desc_bytes(desc), 1);
327 /* ahash_digest shared descriptor */
328 desc = ctx->sh_desc_digest;
329 ahash_gen_sh_desc(desc, OP_ALG_AS_INITFINAL, digestsize, ctx, false);
330 dma_sync_single_for_device(jrdev, ctx->sh_desc_digest_dma,
331 desc_bytes(desc), DMA_TO_DEVICE);
333 print_hex_dump(KERN_ERR,
334 "ahash digest shdesc@"__stringify(__LINE__)": ",
335 DUMP_PREFIX_ADDRESS, 16, 4, desc,
336 desc_bytes(desc), 1);
342 /* Digest hash size if it is too large */
343 static int hash_digest_key(struct caam_hash_ctx *ctx, const u8 *key_in,
344 u32 *keylen, u8 *key_out, u32 digestsize)
346 struct device *jrdev = ctx->jrdev;
348 struct split_key_result result;
349 dma_addr_t src_dma, dst_dma;
352 desc = kmalloc(CAAM_CMD_SZ * 8 + CAAM_PTR_SZ * 2, GFP_KERNEL | GFP_DMA);
354 dev_err(jrdev, "unable to allocate key input memory\n");
358 init_job_desc(desc, 0);
360 src_dma = dma_map_single(jrdev, (void *)key_in, *keylen,
362 if (dma_mapping_error(jrdev, src_dma)) {
363 dev_err(jrdev, "unable to map key input memory\n");
367 dst_dma = dma_map_single(jrdev, (void *)key_out, digestsize,
369 if (dma_mapping_error(jrdev, dst_dma)) {
370 dev_err(jrdev, "unable to map key output memory\n");
371 dma_unmap_single(jrdev, src_dma, *keylen, DMA_TO_DEVICE);
376 /* Job descriptor to perform unkeyed hash on key_in */
377 append_operation(desc, ctx->adata.algtype | OP_ALG_ENCRYPT |
378 OP_ALG_AS_INITFINAL);
379 append_seq_in_ptr(desc, src_dma, *keylen, 0);
380 append_seq_fifo_load(desc, *keylen, FIFOLD_CLASS_CLASS2 |
381 FIFOLD_TYPE_LAST2 | FIFOLD_TYPE_MSG);
382 append_seq_out_ptr(desc, dst_dma, digestsize, 0);
383 append_seq_store(desc, digestsize, LDST_CLASS_2_CCB |
384 LDST_SRCDST_BYTE_CONTEXT);
387 print_hex_dump(KERN_ERR, "key_in@"__stringify(__LINE__)": ",
388 DUMP_PREFIX_ADDRESS, 16, 4, key_in, *keylen, 1);
389 print_hex_dump(KERN_ERR, "jobdesc@"__stringify(__LINE__)": ",
390 DUMP_PREFIX_ADDRESS, 16, 4, desc, desc_bytes(desc), 1);
394 init_completion(&result.completion);
396 ret = caam_jr_enqueue(jrdev, desc, split_key_done, &result);
399 wait_for_completion(&result.completion);
402 print_hex_dump(KERN_ERR,
403 "digested key@"__stringify(__LINE__)": ",
404 DUMP_PREFIX_ADDRESS, 16, 4, key_in,
408 dma_unmap_single(jrdev, src_dma, *keylen, DMA_TO_DEVICE);
409 dma_unmap_single(jrdev, dst_dma, digestsize, DMA_FROM_DEVICE);
411 *keylen = digestsize;
418 static int ahash_setkey(struct crypto_ahash *ahash,
419 const u8 *key, unsigned int keylen)
421 struct caam_hash_ctx *ctx = crypto_ahash_ctx(ahash);
422 int blocksize = crypto_tfm_alg_blocksize(&ahash->base);
423 int digestsize = crypto_ahash_digestsize(ahash);
425 u8 *hashed_key = NULL;
428 printk(KERN_ERR "keylen %d\n", keylen);
431 if (keylen > blocksize) {
432 hashed_key = kmalloc_array(digestsize,
434 GFP_KERNEL | GFP_DMA);
437 ret = hash_digest_key(ctx, key, &keylen, hashed_key,
444 ret = gen_split_key(ctx->jrdev, ctx->key, &ctx->adata, key, keylen,
445 CAAM_MAX_HASH_KEY_SIZE);
450 print_hex_dump(KERN_ERR, "ctx.key@"__stringify(__LINE__)": ",
451 DUMP_PREFIX_ADDRESS, 16, 4, ctx->key,
452 ctx->adata.keylen_pad, 1);
456 return ahash_set_sh_desc(ahash);
459 crypto_ahash_set_flags(ahash, CRYPTO_TFM_RES_BAD_KEY_LEN);
464 * ahash_edesc - s/w-extended ahash descriptor
465 * @dst_dma: physical mapped address of req->result
466 * @sec4_sg_dma: physical mapped address of h/w link table
467 * @src_nents: number of segments in input scatterlist
468 * @sec4_sg_bytes: length of dma mapped sec4_sg space
469 * @hw_desc: the h/w job descriptor followed by any referenced link tables
470 * @sec4_sg: h/w link table
474 dma_addr_t sec4_sg_dma;
477 u32 hw_desc[DESC_JOB_IO_LEN / sizeof(u32)] ____cacheline_aligned;
478 struct sec4_sg_entry sec4_sg[0];
481 static inline void ahash_unmap(struct device *dev,
482 struct ahash_edesc *edesc,
483 struct ahash_request *req, int dst_len)
485 struct caam_hash_state *state = ahash_request_ctx(req);
487 if (edesc->src_nents)
488 dma_unmap_sg(dev, req->src, edesc->src_nents, DMA_TO_DEVICE);
490 dma_unmap_single(dev, edesc->dst_dma, dst_len, DMA_FROM_DEVICE);
492 if (edesc->sec4_sg_bytes)
493 dma_unmap_single(dev, edesc->sec4_sg_dma,
494 edesc->sec4_sg_bytes, DMA_TO_DEVICE);
496 if (state->buf_dma) {
497 dma_unmap_single(dev, state->buf_dma, *current_buflen(state),
503 static inline void ahash_unmap_ctx(struct device *dev,
504 struct ahash_edesc *edesc,
505 struct ahash_request *req, int dst_len, u32 flag)
507 struct crypto_ahash *ahash = crypto_ahash_reqtfm(req);
508 struct caam_hash_ctx *ctx = crypto_ahash_ctx(ahash);
509 struct caam_hash_state *state = ahash_request_ctx(req);
511 if (state->ctx_dma) {
512 dma_unmap_single(dev, state->ctx_dma, ctx->ctx_len, flag);
515 ahash_unmap(dev, edesc, req, dst_len);
518 static void ahash_done(struct device *jrdev, u32 *desc, u32 err,
521 struct ahash_request *req = context;
522 struct ahash_edesc *edesc;
523 struct crypto_ahash *ahash = crypto_ahash_reqtfm(req);
524 int digestsize = crypto_ahash_digestsize(ahash);
526 struct caam_hash_ctx *ctx = crypto_ahash_ctx(ahash);
527 struct caam_hash_state *state = ahash_request_ctx(req);
529 dev_err(jrdev, "%s %d: err 0x%x\n", __func__, __LINE__, err);
532 edesc = container_of(desc, struct ahash_edesc, hw_desc[0]);
534 caam_jr_strstatus(jrdev, err);
536 ahash_unmap(jrdev, edesc, req, digestsize);
540 print_hex_dump(KERN_ERR, "ctx@"__stringify(__LINE__)": ",
541 DUMP_PREFIX_ADDRESS, 16, 4, state->caam_ctx,
544 print_hex_dump(KERN_ERR, "result@"__stringify(__LINE__)": ",
545 DUMP_PREFIX_ADDRESS, 16, 4, req->result,
549 req->base.complete(&req->base, err);
552 static void ahash_done_bi(struct device *jrdev, u32 *desc, u32 err,
555 struct ahash_request *req = context;
556 struct ahash_edesc *edesc;
557 struct crypto_ahash *ahash = crypto_ahash_reqtfm(req);
558 struct caam_hash_ctx *ctx = crypto_ahash_ctx(ahash);
559 struct caam_hash_state *state = ahash_request_ctx(req);
561 int digestsize = crypto_ahash_digestsize(ahash);
563 dev_err(jrdev, "%s %d: err 0x%x\n", __func__, __LINE__, err);
566 edesc = container_of(desc, struct ahash_edesc, hw_desc[0]);
568 caam_jr_strstatus(jrdev, err);
570 ahash_unmap_ctx(jrdev, edesc, req, ctx->ctx_len, DMA_BIDIRECTIONAL);
575 print_hex_dump(KERN_ERR, "ctx@"__stringify(__LINE__)": ",
576 DUMP_PREFIX_ADDRESS, 16, 4, state->caam_ctx,
579 print_hex_dump(KERN_ERR, "result@"__stringify(__LINE__)": ",
580 DUMP_PREFIX_ADDRESS, 16, 4, req->result,
584 req->base.complete(&req->base, err);
587 static void ahash_done_ctx_src(struct device *jrdev, u32 *desc, u32 err,
590 struct ahash_request *req = context;
591 struct ahash_edesc *edesc;
592 struct crypto_ahash *ahash = crypto_ahash_reqtfm(req);
593 int digestsize = crypto_ahash_digestsize(ahash);
595 struct caam_hash_ctx *ctx = crypto_ahash_ctx(ahash);
596 struct caam_hash_state *state = ahash_request_ctx(req);
598 dev_err(jrdev, "%s %d: err 0x%x\n", __func__, __LINE__, err);
601 edesc = container_of(desc, struct ahash_edesc, hw_desc[0]);
603 caam_jr_strstatus(jrdev, err);
605 ahash_unmap_ctx(jrdev, edesc, req, digestsize, DMA_TO_DEVICE);
609 print_hex_dump(KERN_ERR, "ctx@"__stringify(__LINE__)": ",
610 DUMP_PREFIX_ADDRESS, 16, 4, state->caam_ctx,
613 print_hex_dump(KERN_ERR, "result@"__stringify(__LINE__)": ",
614 DUMP_PREFIX_ADDRESS, 16, 4, req->result,
618 req->base.complete(&req->base, err);
621 static void ahash_done_ctx_dst(struct device *jrdev, u32 *desc, u32 err,
624 struct ahash_request *req = context;
625 struct ahash_edesc *edesc;
626 struct crypto_ahash *ahash = crypto_ahash_reqtfm(req);
627 struct caam_hash_ctx *ctx = crypto_ahash_ctx(ahash);
628 struct caam_hash_state *state = ahash_request_ctx(req);
630 int digestsize = crypto_ahash_digestsize(ahash);
632 dev_err(jrdev, "%s %d: err 0x%x\n", __func__, __LINE__, err);
635 edesc = container_of(desc, struct ahash_edesc, hw_desc[0]);
637 caam_jr_strstatus(jrdev, err);
639 ahash_unmap_ctx(jrdev, edesc, req, ctx->ctx_len, DMA_FROM_DEVICE);
644 print_hex_dump(KERN_ERR, "ctx@"__stringify(__LINE__)": ",
645 DUMP_PREFIX_ADDRESS, 16, 4, state->caam_ctx,
648 print_hex_dump(KERN_ERR, "result@"__stringify(__LINE__)": ",
649 DUMP_PREFIX_ADDRESS, 16, 4, req->result,
653 req->base.complete(&req->base, err);
657 * Allocate an enhanced descriptor, which contains the hardware descriptor
658 * and space for hardware scatter table containing sg_num entries.
660 static struct ahash_edesc *ahash_edesc_alloc(struct caam_hash_ctx *ctx,
661 int sg_num, u32 *sh_desc,
662 dma_addr_t sh_desc_dma,
665 struct ahash_edesc *edesc;
666 unsigned int sg_size = sg_num * sizeof(struct sec4_sg_entry);
668 edesc = kzalloc(sizeof(*edesc) + sg_size, GFP_DMA | flags);
670 dev_err(ctx->jrdev, "could not allocate extended descriptor\n");
674 init_job_desc_shared(edesc->hw_desc, sh_desc_dma, desc_len(sh_desc),
675 HDR_SHARE_DEFER | HDR_REVERSE);
680 static int ahash_edesc_add_src(struct caam_hash_ctx *ctx,
681 struct ahash_edesc *edesc,
682 struct ahash_request *req, int nents,
683 unsigned int first_sg,
684 unsigned int first_bytes, size_t to_hash)
689 if (nents > 1 || first_sg) {
690 struct sec4_sg_entry *sg = edesc->sec4_sg;
691 unsigned int sgsize = sizeof(*sg) * (first_sg + nents);
693 sg_to_sec4_sg_last(req->src, nents, sg + first_sg, 0);
695 src_dma = dma_map_single(ctx->jrdev, sg, sgsize, DMA_TO_DEVICE);
696 if (dma_mapping_error(ctx->jrdev, src_dma)) {
697 dev_err(ctx->jrdev, "unable to map S/G table\n");
701 edesc->sec4_sg_bytes = sgsize;
702 edesc->sec4_sg_dma = src_dma;
705 src_dma = sg_dma_address(req->src);
709 append_seq_in_ptr(edesc->hw_desc, src_dma, first_bytes + to_hash,
715 /* submit update job descriptor */
716 static int ahash_update_ctx(struct ahash_request *req)
718 struct crypto_ahash *ahash = crypto_ahash_reqtfm(req);
719 struct caam_hash_ctx *ctx = crypto_ahash_ctx(ahash);
720 struct caam_hash_state *state = ahash_request_ctx(req);
721 struct device *jrdev = ctx->jrdev;
722 gfp_t flags = (req->base.flags & CRYPTO_TFM_REQ_MAY_SLEEP) ?
723 GFP_KERNEL : GFP_ATOMIC;
724 u8 *buf = current_buf(state);
725 int *buflen = current_buflen(state);
726 u8 *next_buf = alt_buf(state);
727 int *next_buflen = alt_buflen(state), last_buflen;
728 int in_len = *buflen + req->nbytes, to_hash;
730 int src_nents, mapped_nents, sec4_sg_bytes, sec4_sg_src_index;
731 struct ahash_edesc *edesc;
734 last_buflen = *next_buflen;
735 *next_buflen = in_len & (crypto_tfm_alg_blocksize(&ahash->base) - 1);
736 to_hash = in_len - *next_buflen;
739 src_nents = sg_nents_for_len(req->src,
740 req->nbytes - (*next_buflen));
742 dev_err(jrdev, "Invalid number of src SG.\n");
747 mapped_nents = dma_map_sg(jrdev, req->src, src_nents,
750 dev_err(jrdev, "unable to DMA map source\n");
757 sec4_sg_src_index = 1 + (*buflen ? 1 : 0);
758 sec4_sg_bytes = (sec4_sg_src_index + mapped_nents) *
759 sizeof(struct sec4_sg_entry);
762 * allocate space for base edesc and hw desc commands,
765 edesc = ahash_edesc_alloc(ctx, sec4_sg_src_index + mapped_nents,
767 ctx->sh_desc_update_dma, flags);
769 dma_unmap_sg(jrdev, req->src, src_nents, DMA_TO_DEVICE);
773 edesc->src_nents = src_nents;
774 edesc->sec4_sg_bytes = sec4_sg_bytes;
776 ret = ctx_map_to_sec4_sg(desc, jrdev, state, ctx->ctx_len,
777 edesc->sec4_sg, DMA_BIDIRECTIONAL);
781 ret = buf_map_to_sec4_sg(jrdev, edesc->sec4_sg + 1, state);
786 sg_to_sec4_sg_last(req->src, mapped_nents,
787 edesc->sec4_sg + sec4_sg_src_index,
790 scatterwalk_map_and_copy(next_buf, req->src,
794 sg_to_sec4_set_last(edesc->sec4_sg + sec4_sg_src_index -
798 desc = edesc->hw_desc;
800 edesc->sec4_sg_dma = dma_map_single(jrdev, edesc->sec4_sg,
803 if (dma_mapping_error(jrdev, edesc->sec4_sg_dma)) {
804 dev_err(jrdev, "unable to map S/G table\n");
809 append_seq_in_ptr(desc, edesc->sec4_sg_dma, ctx->ctx_len +
812 append_seq_out_ptr(desc, state->ctx_dma, ctx->ctx_len, 0);
815 print_hex_dump(KERN_ERR, "jobdesc@"__stringify(__LINE__)": ",
816 DUMP_PREFIX_ADDRESS, 16, 4, desc,
817 desc_bytes(desc), 1);
820 ret = caam_jr_enqueue(jrdev, desc, ahash_done_bi, req);
825 } else if (*next_buflen) {
826 scatterwalk_map_and_copy(buf + *buflen, req->src, 0,
828 *buflen = *next_buflen;
829 *next_buflen = last_buflen;
832 print_hex_dump(KERN_ERR, "buf@"__stringify(__LINE__)": ",
833 DUMP_PREFIX_ADDRESS, 16, 4, buf, *buflen, 1);
834 print_hex_dump(KERN_ERR, "next buf@"__stringify(__LINE__)": ",
835 DUMP_PREFIX_ADDRESS, 16, 4, next_buf,
841 ahash_unmap_ctx(jrdev, edesc, req, ctx->ctx_len, DMA_BIDIRECTIONAL);
846 static int ahash_final_ctx(struct ahash_request *req)
848 struct crypto_ahash *ahash = crypto_ahash_reqtfm(req);
849 struct caam_hash_ctx *ctx = crypto_ahash_ctx(ahash);
850 struct caam_hash_state *state = ahash_request_ctx(req);
851 struct device *jrdev = ctx->jrdev;
852 gfp_t flags = (req->base.flags & CRYPTO_TFM_REQ_MAY_SLEEP) ?
853 GFP_KERNEL : GFP_ATOMIC;
854 int buflen = *current_buflen(state);
856 int sec4_sg_bytes, sec4_sg_src_index;
857 int digestsize = crypto_ahash_digestsize(ahash);
858 struct ahash_edesc *edesc;
861 sec4_sg_src_index = 1 + (buflen ? 1 : 0);
862 sec4_sg_bytes = sec4_sg_src_index * sizeof(struct sec4_sg_entry);
864 /* allocate space for base edesc and hw desc commands, link tables */
865 edesc = ahash_edesc_alloc(ctx, sec4_sg_src_index,
866 ctx->sh_desc_fin, ctx->sh_desc_fin_dma,
871 desc = edesc->hw_desc;
873 edesc->sec4_sg_bytes = sec4_sg_bytes;
874 edesc->src_nents = 0;
876 ret = ctx_map_to_sec4_sg(desc, jrdev, state, ctx->ctx_len,
877 edesc->sec4_sg, DMA_TO_DEVICE);
881 ret = buf_map_to_sec4_sg(jrdev, edesc->sec4_sg + 1, state);
885 sg_to_sec4_set_last(edesc->sec4_sg + sec4_sg_src_index - 1);
887 edesc->sec4_sg_dma = dma_map_single(jrdev, edesc->sec4_sg,
888 sec4_sg_bytes, DMA_TO_DEVICE);
889 if (dma_mapping_error(jrdev, edesc->sec4_sg_dma)) {
890 dev_err(jrdev, "unable to map S/G table\n");
895 append_seq_in_ptr(desc, edesc->sec4_sg_dma, ctx->ctx_len + buflen,
898 edesc->dst_dma = map_seq_out_ptr_result(desc, jrdev, req->result,
900 if (dma_mapping_error(jrdev, edesc->dst_dma)) {
901 dev_err(jrdev, "unable to map dst\n");
907 print_hex_dump(KERN_ERR, "jobdesc@"__stringify(__LINE__)": ",
908 DUMP_PREFIX_ADDRESS, 16, 4, desc, desc_bytes(desc), 1);
911 ret = caam_jr_enqueue(jrdev, desc, ahash_done_ctx_src, req);
917 ahash_unmap_ctx(jrdev, edesc, req, digestsize, DMA_FROM_DEVICE);
922 static int ahash_finup_ctx(struct ahash_request *req)
924 struct crypto_ahash *ahash = crypto_ahash_reqtfm(req);
925 struct caam_hash_ctx *ctx = crypto_ahash_ctx(ahash);
926 struct caam_hash_state *state = ahash_request_ctx(req);
927 struct device *jrdev = ctx->jrdev;
928 gfp_t flags = (req->base.flags & CRYPTO_TFM_REQ_MAY_SLEEP) ?
929 GFP_KERNEL : GFP_ATOMIC;
930 int buflen = *current_buflen(state);
932 int sec4_sg_src_index;
933 int src_nents, mapped_nents;
934 int digestsize = crypto_ahash_digestsize(ahash);
935 struct ahash_edesc *edesc;
938 src_nents = sg_nents_for_len(req->src, req->nbytes);
940 dev_err(jrdev, "Invalid number of src SG.\n");
945 mapped_nents = dma_map_sg(jrdev, req->src, src_nents,
948 dev_err(jrdev, "unable to DMA map source\n");
955 sec4_sg_src_index = 1 + (buflen ? 1 : 0);
957 /* allocate space for base edesc and hw desc commands, link tables */
958 edesc = ahash_edesc_alloc(ctx, sec4_sg_src_index + mapped_nents,
959 ctx->sh_desc_fin, ctx->sh_desc_fin_dma,
962 dma_unmap_sg(jrdev, req->src, src_nents, DMA_TO_DEVICE);
966 desc = edesc->hw_desc;
968 edesc->src_nents = src_nents;
970 ret = ctx_map_to_sec4_sg(desc, jrdev, state, ctx->ctx_len,
971 edesc->sec4_sg, DMA_TO_DEVICE);
975 ret = buf_map_to_sec4_sg(jrdev, edesc->sec4_sg + 1, state);
979 ret = ahash_edesc_add_src(ctx, edesc, req, mapped_nents,
980 sec4_sg_src_index, ctx->ctx_len + buflen,
985 edesc->dst_dma = map_seq_out_ptr_result(desc, jrdev, req->result,
987 if (dma_mapping_error(jrdev, edesc->dst_dma)) {
988 dev_err(jrdev, "unable to map dst\n");
994 print_hex_dump(KERN_ERR, "jobdesc@"__stringify(__LINE__)": ",
995 DUMP_PREFIX_ADDRESS, 16, 4, desc, desc_bytes(desc), 1);
998 ret = caam_jr_enqueue(jrdev, desc, ahash_done_ctx_src, req);
1002 return -EINPROGRESS;
1004 ahash_unmap_ctx(jrdev, edesc, req, digestsize, DMA_FROM_DEVICE);
1009 static int ahash_digest(struct ahash_request *req)
1011 struct crypto_ahash *ahash = crypto_ahash_reqtfm(req);
1012 struct caam_hash_ctx *ctx = crypto_ahash_ctx(ahash);
1013 struct caam_hash_state *state = ahash_request_ctx(req);
1014 struct device *jrdev = ctx->jrdev;
1015 gfp_t flags = (req->base.flags & CRYPTO_TFM_REQ_MAY_SLEEP) ?
1016 GFP_KERNEL : GFP_ATOMIC;
1018 int digestsize = crypto_ahash_digestsize(ahash);
1019 int src_nents, mapped_nents;
1020 struct ahash_edesc *edesc;
1025 src_nents = sg_nents_for_len(req->src, req->nbytes);
1026 if (src_nents < 0) {
1027 dev_err(jrdev, "Invalid number of src SG.\n");
1032 mapped_nents = dma_map_sg(jrdev, req->src, src_nents,
1034 if (!mapped_nents) {
1035 dev_err(jrdev, "unable to map source for DMA\n");
1042 /* allocate space for base edesc and hw desc commands, link tables */
1043 edesc = ahash_edesc_alloc(ctx, mapped_nents > 1 ? mapped_nents : 0,
1044 ctx->sh_desc_digest, ctx->sh_desc_digest_dma,
1047 dma_unmap_sg(jrdev, req->src, src_nents, DMA_TO_DEVICE);
1051 edesc->src_nents = src_nents;
1053 ret = ahash_edesc_add_src(ctx, edesc, req, mapped_nents, 0, 0,
1056 ahash_unmap(jrdev, edesc, req, digestsize);
1061 desc = edesc->hw_desc;
1063 edesc->dst_dma = map_seq_out_ptr_result(desc, jrdev, req->result,
1065 if (dma_mapping_error(jrdev, edesc->dst_dma)) {
1066 dev_err(jrdev, "unable to map dst\n");
1067 ahash_unmap(jrdev, edesc, req, digestsize);
1073 print_hex_dump(KERN_ERR, "jobdesc@"__stringify(__LINE__)": ",
1074 DUMP_PREFIX_ADDRESS, 16, 4, desc, desc_bytes(desc), 1);
1077 ret = caam_jr_enqueue(jrdev, desc, ahash_done, req);
1081 ahash_unmap(jrdev, edesc, req, digestsize);
1088 /* submit ahash final if it the first job descriptor */
1089 static int ahash_final_no_ctx(struct ahash_request *req)
1091 struct crypto_ahash *ahash = crypto_ahash_reqtfm(req);
1092 struct caam_hash_ctx *ctx = crypto_ahash_ctx(ahash);
1093 struct caam_hash_state *state = ahash_request_ctx(req);
1094 struct device *jrdev = ctx->jrdev;
1095 gfp_t flags = (req->base.flags & CRYPTO_TFM_REQ_MAY_SLEEP) ?
1096 GFP_KERNEL : GFP_ATOMIC;
1097 u8 *buf = current_buf(state);
1098 int buflen = *current_buflen(state);
1100 int digestsize = crypto_ahash_digestsize(ahash);
1101 struct ahash_edesc *edesc;
1104 /* allocate space for base edesc and hw desc commands, link tables */
1105 edesc = ahash_edesc_alloc(ctx, 0, ctx->sh_desc_digest,
1106 ctx->sh_desc_digest_dma, flags);
1110 desc = edesc->hw_desc;
1112 state->buf_dma = dma_map_single(jrdev, buf, buflen, DMA_TO_DEVICE);
1113 if (dma_mapping_error(jrdev, state->buf_dma)) {
1114 dev_err(jrdev, "unable to map src\n");
1118 append_seq_in_ptr(desc, state->buf_dma, buflen, 0);
1120 edesc->dst_dma = map_seq_out_ptr_result(desc, jrdev, req->result,
1122 if (dma_mapping_error(jrdev, edesc->dst_dma)) {
1123 dev_err(jrdev, "unable to map dst\n");
1126 edesc->src_nents = 0;
1129 print_hex_dump(KERN_ERR, "jobdesc@"__stringify(__LINE__)": ",
1130 DUMP_PREFIX_ADDRESS, 16, 4, desc, desc_bytes(desc), 1);
1133 ret = caam_jr_enqueue(jrdev, desc, ahash_done, req);
1137 ahash_unmap(jrdev, edesc, req, digestsize);
1143 ahash_unmap(jrdev, edesc, req, digestsize);
1149 /* submit ahash update if it the first job descriptor after update */
1150 static int ahash_update_no_ctx(struct ahash_request *req)
1152 struct crypto_ahash *ahash = crypto_ahash_reqtfm(req);
1153 struct caam_hash_ctx *ctx = crypto_ahash_ctx(ahash);
1154 struct caam_hash_state *state = ahash_request_ctx(req);
1155 struct device *jrdev = ctx->jrdev;
1156 gfp_t flags = (req->base.flags & CRYPTO_TFM_REQ_MAY_SLEEP) ?
1157 GFP_KERNEL : GFP_ATOMIC;
1158 u8 *buf = current_buf(state);
1159 int *buflen = current_buflen(state);
1160 u8 *next_buf = alt_buf(state);
1161 int *next_buflen = alt_buflen(state);
1162 int in_len = *buflen + req->nbytes, to_hash;
1163 int sec4_sg_bytes, src_nents, mapped_nents;
1164 struct ahash_edesc *edesc;
1168 *next_buflen = in_len & (crypto_tfm_alg_blocksize(&ahash->base) - 1);
1169 to_hash = in_len - *next_buflen;
1172 src_nents = sg_nents_for_len(req->src,
1173 req->nbytes - *next_buflen);
1174 if (src_nents < 0) {
1175 dev_err(jrdev, "Invalid number of src SG.\n");
1180 mapped_nents = dma_map_sg(jrdev, req->src, src_nents,
1182 if (!mapped_nents) {
1183 dev_err(jrdev, "unable to DMA map source\n");
1190 sec4_sg_bytes = (1 + mapped_nents) *
1191 sizeof(struct sec4_sg_entry);
1194 * allocate space for base edesc and hw desc commands,
1197 edesc = ahash_edesc_alloc(ctx, 1 + mapped_nents,
1198 ctx->sh_desc_update_first,
1199 ctx->sh_desc_update_first_dma,
1202 dma_unmap_sg(jrdev, req->src, src_nents, DMA_TO_DEVICE);
1206 edesc->src_nents = src_nents;
1207 edesc->sec4_sg_bytes = sec4_sg_bytes;
1210 ret = buf_map_to_sec4_sg(jrdev, edesc->sec4_sg, state);
1214 sg_to_sec4_sg_last(req->src, mapped_nents,
1215 edesc->sec4_sg + 1, 0);
1218 scatterwalk_map_and_copy(next_buf, req->src,
1223 desc = edesc->hw_desc;
1225 edesc->sec4_sg_dma = dma_map_single(jrdev, edesc->sec4_sg,
1228 if (dma_mapping_error(jrdev, edesc->sec4_sg_dma)) {
1229 dev_err(jrdev, "unable to map S/G table\n");
1234 append_seq_in_ptr(desc, edesc->sec4_sg_dma, to_hash, LDST_SGF);
1236 ret = map_seq_out_ptr_ctx(desc, jrdev, state, ctx->ctx_len);
1241 print_hex_dump(KERN_ERR, "jobdesc@"__stringify(__LINE__)": ",
1242 DUMP_PREFIX_ADDRESS, 16, 4, desc,
1243 desc_bytes(desc), 1);
1246 ret = caam_jr_enqueue(jrdev, desc, ahash_done_ctx_dst, req);
1251 state->update = ahash_update_ctx;
1252 state->finup = ahash_finup_ctx;
1253 state->final = ahash_final_ctx;
1254 } else if (*next_buflen) {
1255 scatterwalk_map_and_copy(buf + *buflen, req->src, 0,
1257 *buflen = *next_buflen;
1261 print_hex_dump(KERN_ERR, "buf@"__stringify(__LINE__)": ",
1262 DUMP_PREFIX_ADDRESS, 16, 4, buf, *buflen, 1);
1263 print_hex_dump(KERN_ERR, "next buf@"__stringify(__LINE__)": ",
1264 DUMP_PREFIX_ADDRESS, 16, 4, next_buf,
1270 ahash_unmap_ctx(jrdev, edesc, req, ctx->ctx_len, DMA_TO_DEVICE);
1275 /* submit ahash finup if it the first job descriptor after update */
1276 static int ahash_finup_no_ctx(struct ahash_request *req)
1278 struct crypto_ahash *ahash = crypto_ahash_reqtfm(req);
1279 struct caam_hash_ctx *ctx = crypto_ahash_ctx(ahash);
1280 struct caam_hash_state *state = ahash_request_ctx(req);
1281 struct device *jrdev = ctx->jrdev;
1282 gfp_t flags = (req->base.flags & CRYPTO_TFM_REQ_MAY_SLEEP) ?
1283 GFP_KERNEL : GFP_ATOMIC;
1284 int buflen = *current_buflen(state);
1286 int sec4_sg_bytes, sec4_sg_src_index, src_nents, mapped_nents;
1287 int digestsize = crypto_ahash_digestsize(ahash);
1288 struct ahash_edesc *edesc;
1291 src_nents = sg_nents_for_len(req->src, req->nbytes);
1292 if (src_nents < 0) {
1293 dev_err(jrdev, "Invalid number of src SG.\n");
1298 mapped_nents = dma_map_sg(jrdev, req->src, src_nents,
1300 if (!mapped_nents) {
1301 dev_err(jrdev, "unable to DMA map source\n");
1308 sec4_sg_src_index = 2;
1309 sec4_sg_bytes = (sec4_sg_src_index + mapped_nents) *
1310 sizeof(struct sec4_sg_entry);
1312 /* allocate space for base edesc and hw desc commands, link tables */
1313 edesc = ahash_edesc_alloc(ctx, sec4_sg_src_index + mapped_nents,
1314 ctx->sh_desc_digest, ctx->sh_desc_digest_dma,
1317 dma_unmap_sg(jrdev, req->src, src_nents, DMA_TO_DEVICE);
1321 desc = edesc->hw_desc;
1323 edesc->src_nents = src_nents;
1324 edesc->sec4_sg_bytes = sec4_sg_bytes;
1326 ret = buf_map_to_sec4_sg(jrdev, edesc->sec4_sg, state);
1330 ret = ahash_edesc_add_src(ctx, edesc, req, mapped_nents, 1, buflen,
1333 dev_err(jrdev, "unable to map S/G table\n");
1337 edesc->dst_dma = map_seq_out_ptr_result(desc, jrdev, req->result,
1339 if (dma_mapping_error(jrdev, edesc->dst_dma)) {
1340 dev_err(jrdev, "unable to map dst\n");
1345 print_hex_dump(KERN_ERR, "jobdesc@"__stringify(__LINE__)": ",
1346 DUMP_PREFIX_ADDRESS, 16, 4, desc, desc_bytes(desc), 1);
1349 ret = caam_jr_enqueue(jrdev, desc, ahash_done, req);
1353 ahash_unmap(jrdev, edesc, req, digestsize);
1359 ahash_unmap(jrdev, edesc, req, digestsize);
1365 /* submit first update job descriptor after init */
1366 static int ahash_update_first(struct ahash_request *req)
1368 struct crypto_ahash *ahash = crypto_ahash_reqtfm(req);
1369 struct caam_hash_ctx *ctx = crypto_ahash_ctx(ahash);
1370 struct caam_hash_state *state = ahash_request_ctx(req);
1371 struct device *jrdev = ctx->jrdev;
1372 gfp_t flags = (req->base.flags & CRYPTO_TFM_REQ_MAY_SLEEP) ?
1373 GFP_KERNEL : GFP_ATOMIC;
1374 u8 *next_buf = alt_buf(state);
1375 int *next_buflen = alt_buflen(state);
1378 int src_nents, mapped_nents;
1379 struct ahash_edesc *edesc;
1382 *next_buflen = req->nbytes & (crypto_tfm_alg_blocksize(&ahash->base) -
1384 to_hash = req->nbytes - *next_buflen;
1387 src_nents = sg_nents_for_len(req->src,
1388 req->nbytes - *next_buflen);
1389 if (src_nents < 0) {
1390 dev_err(jrdev, "Invalid number of src SG.\n");
1395 mapped_nents = dma_map_sg(jrdev, req->src, src_nents,
1397 if (!mapped_nents) {
1398 dev_err(jrdev, "unable to map source for DMA\n");
1406 * allocate space for base edesc and hw desc commands,
1409 edesc = ahash_edesc_alloc(ctx, mapped_nents > 1 ?
1411 ctx->sh_desc_update_first,
1412 ctx->sh_desc_update_first_dma,
1415 dma_unmap_sg(jrdev, req->src, src_nents, DMA_TO_DEVICE);
1419 edesc->src_nents = src_nents;
1422 ret = ahash_edesc_add_src(ctx, edesc, req, mapped_nents, 0, 0,
1428 scatterwalk_map_and_copy(next_buf, req->src, to_hash,
1431 desc = edesc->hw_desc;
1433 ret = map_seq_out_ptr_ctx(desc, jrdev, state, ctx->ctx_len);
1438 print_hex_dump(KERN_ERR, "jobdesc@"__stringify(__LINE__)": ",
1439 DUMP_PREFIX_ADDRESS, 16, 4, desc,
1440 desc_bytes(desc), 1);
1443 ret = caam_jr_enqueue(jrdev, desc, ahash_done_ctx_dst, req);
1448 state->update = ahash_update_ctx;
1449 state->finup = ahash_finup_ctx;
1450 state->final = ahash_final_ctx;
1451 } else if (*next_buflen) {
1452 state->update = ahash_update_no_ctx;
1453 state->finup = ahash_finup_no_ctx;
1454 state->final = ahash_final_no_ctx;
1455 scatterwalk_map_and_copy(next_buf, req->src, 0,
1460 print_hex_dump(KERN_ERR, "next buf@"__stringify(__LINE__)": ",
1461 DUMP_PREFIX_ADDRESS, 16, 4, next_buf,
1467 ahash_unmap_ctx(jrdev, edesc, req, ctx->ctx_len, DMA_TO_DEVICE);
1472 static int ahash_finup_first(struct ahash_request *req)
1474 return ahash_digest(req);
1477 static int ahash_init(struct ahash_request *req)
1479 struct caam_hash_state *state = ahash_request_ctx(req);
1481 state->update = ahash_update_first;
1482 state->finup = ahash_finup_first;
1483 state->final = ahash_final_no_ctx;
1486 state->current_buf = 0;
1488 state->buflen_0 = 0;
1489 state->buflen_1 = 0;
1494 static int ahash_update(struct ahash_request *req)
1496 struct caam_hash_state *state = ahash_request_ctx(req);
1498 return state->update(req);
1501 static int ahash_finup(struct ahash_request *req)
1503 struct caam_hash_state *state = ahash_request_ctx(req);
1505 return state->finup(req);
1508 static int ahash_final(struct ahash_request *req)
1510 struct caam_hash_state *state = ahash_request_ctx(req);
1512 return state->final(req);
1515 static int ahash_export(struct ahash_request *req, void *out)
1517 struct caam_hash_state *state = ahash_request_ctx(req);
1518 struct caam_export_state *export = out;
1522 if (state->current_buf) {
1524 len = state->buflen_1;
1527 len = state->buflen_0;
1530 memcpy(export->buf, buf, len);
1531 memcpy(export->caam_ctx, state->caam_ctx, sizeof(export->caam_ctx));
1532 export->buflen = len;
1533 export->update = state->update;
1534 export->final = state->final;
1535 export->finup = state->finup;
1540 static int ahash_import(struct ahash_request *req, const void *in)
1542 struct caam_hash_state *state = ahash_request_ctx(req);
1543 const struct caam_export_state *export = in;
1545 memset(state, 0, sizeof(*state));
1546 memcpy(state->buf_0, export->buf, export->buflen);
1547 memcpy(state->caam_ctx, export->caam_ctx, sizeof(state->caam_ctx));
1548 state->buflen_0 = export->buflen;
1549 state->update = export->update;
1550 state->final = export->final;
1551 state->finup = export->finup;
1556 struct caam_hash_template {
1557 char name[CRYPTO_MAX_ALG_NAME];
1558 char driver_name[CRYPTO_MAX_ALG_NAME];
1559 char hmac_name[CRYPTO_MAX_ALG_NAME];
1560 char hmac_driver_name[CRYPTO_MAX_ALG_NAME];
1561 unsigned int blocksize;
1562 struct ahash_alg template_ahash;
1566 /* ahash descriptors */
1567 static struct caam_hash_template driver_hash[] = {
1570 .driver_name = "sha1-caam",
1571 .hmac_name = "hmac(sha1)",
1572 .hmac_driver_name = "hmac-sha1-caam",
1573 .blocksize = SHA1_BLOCK_SIZE,
1576 .update = ahash_update,
1577 .final = ahash_final,
1578 .finup = ahash_finup,
1579 .digest = ahash_digest,
1580 .export = ahash_export,
1581 .import = ahash_import,
1582 .setkey = ahash_setkey,
1584 .digestsize = SHA1_DIGEST_SIZE,
1585 .statesize = sizeof(struct caam_export_state),
1588 .alg_type = OP_ALG_ALGSEL_SHA1,
1591 .driver_name = "sha224-caam",
1592 .hmac_name = "hmac(sha224)",
1593 .hmac_driver_name = "hmac-sha224-caam",
1594 .blocksize = SHA224_BLOCK_SIZE,
1597 .update = ahash_update,
1598 .final = ahash_final,
1599 .finup = ahash_finup,
1600 .digest = ahash_digest,
1601 .export = ahash_export,
1602 .import = ahash_import,
1603 .setkey = ahash_setkey,
1605 .digestsize = SHA224_DIGEST_SIZE,
1606 .statesize = sizeof(struct caam_export_state),
1609 .alg_type = OP_ALG_ALGSEL_SHA224,
1612 .driver_name = "sha256-caam",
1613 .hmac_name = "hmac(sha256)",
1614 .hmac_driver_name = "hmac-sha256-caam",
1615 .blocksize = SHA256_BLOCK_SIZE,
1618 .update = ahash_update,
1619 .final = ahash_final,
1620 .finup = ahash_finup,
1621 .digest = ahash_digest,
1622 .export = ahash_export,
1623 .import = ahash_import,
1624 .setkey = ahash_setkey,
1626 .digestsize = SHA256_DIGEST_SIZE,
1627 .statesize = sizeof(struct caam_export_state),
1630 .alg_type = OP_ALG_ALGSEL_SHA256,
1633 .driver_name = "sha384-caam",
1634 .hmac_name = "hmac(sha384)",
1635 .hmac_driver_name = "hmac-sha384-caam",
1636 .blocksize = SHA384_BLOCK_SIZE,
1639 .update = ahash_update,
1640 .final = ahash_final,
1641 .finup = ahash_finup,
1642 .digest = ahash_digest,
1643 .export = ahash_export,
1644 .import = ahash_import,
1645 .setkey = ahash_setkey,
1647 .digestsize = SHA384_DIGEST_SIZE,
1648 .statesize = sizeof(struct caam_export_state),
1651 .alg_type = OP_ALG_ALGSEL_SHA384,
1654 .driver_name = "sha512-caam",
1655 .hmac_name = "hmac(sha512)",
1656 .hmac_driver_name = "hmac-sha512-caam",
1657 .blocksize = SHA512_BLOCK_SIZE,
1660 .update = ahash_update,
1661 .final = ahash_final,
1662 .finup = ahash_finup,
1663 .digest = ahash_digest,
1664 .export = ahash_export,
1665 .import = ahash_import,
1666 .setkey = ahash_setkey,
1668 .digestsize = SHA512_DIGEST_SIZE,
1669 .statesize = sizeof(struct caam_export_state),
1672 .alg_type = OP_ALG_ALGSEL_SHA512,
1675 .driver_name = "md5-caam",
1676 .hmac_name = "hmac(md5)",
1677 .hmac_driver_name = "hmac-md5-caam",
1678 .blocksize = MD5_BLOCK_WORDS * 4,
1681 .update = ahash_update,
1682 .final = ahash_final,
1683 .finup = ahash_finup,
1684 .digest = ahash_digest,
1685 .export = ahash_export,
1686 .import = ahash_import,
1687 .setkey = ahash_setkey,
1689 .digestsize = MD5_DIGEST_SIZE,
1690 .statesize = sizeof(struct caam_export_state),
1693 .alg_type = OP_ALG_ALGSEL_MD5,
1697 struct caam_hash_alg {
1698 struct list_head entry;
1700 struct ahash_alg ahash_alg;
1703 static int caam_hash_cra_init(struct crypto_tfm *tfm)
1705 struct crypto_ahash *ahash = __crypto_ahash_cast(tfm);
1706 struct crypto_alg *base = tfm->__crt_alg;
1707 struct hash_alg_common *halg =
1708 container_of(base, struct hash_alg_common, base);
1709 struct ahash_alg *alg =
1710 container_of(halg, struct ahash_alg, halg);
1711 struct caam_hash_alg *caam_hash =
1712 container_of(alg, struct caam_hash_alg, ahash_alg);
1713 struct caam_hash_ctx *ctx = crypto_tfm_ctx(tfm);
1714 /* Sizes for MDHA running digests: MD5, SHA1, 224, 256, 384, 512 */
1715 static const u8 runninglen[] = { HASH_MSG_LEN + MD5_DIGEST_SIZE,
1716 HASH_MSG_LEN + SHA1_DIGEST_SIZE,
1718 HASH_MSG_LEN + SHA256_DIGEST_SIZE,
1720 HASH_MSG_LEN + SHA512_DIGEST_SIZE };
1721 dma_addr_t dma_addr;
1724 * Get a Job ring from Job Ring driver to ensure in-order
1725 * crypto request processing per tfm
1727 ctx->jrdev = caam_jr_alloc();
1728 if (IS_ERR(ctx->jrdev)) {
1729 pr_err("Job Ring Device allocation for transform failed\n");
1730 return PTR_ERR(ctx->jrdev);
1733 dma_addr = dma_map_single_attrs(ctx->jrdev, ctx->sh_desc_update,
1734 offsetof(struct caam_hash_ctx,
1735 sh_desc_update_dma),
1736 DMA_TO_DEVICE, DMA_ATTR_SKIP_CPU_SYNC);
1737 if (dma_mapping_error(ctx->jrdev, dma_addr)) {
1738 dev_err(ctx->jrdev, "unable to map shared descriptors\n");
1739 caam_jr_free(ctx->jrdev);
1743 ctx->sh_desc_update_dma = dma_addr;
1744 ctx->sh_desc_update_first_dma = dma_addr +
1745 offsetof(struct caam_hash_ctx,
1746 sh_desc_update_first);
1747 ctx->sh_desc_fin_dma = dma_addr + offsetof(struct caam_hash_ctx,
1749 ctx->sh_desc_digest_dma = dma_addr + offsetof(struct caam_hash_ctx,
1752 /* copy descriptor header template value */
1753 ctx->adata.algtype = OP_TYPE_CLASS2_ALG | caam_hash->alg_type;
1755 ctx->ctx_len = runninglen[(ctx->adata.algtype &
1756 OP_ALG_ALGSEL_SUBMASK) >>
1757 OP_ALG_ALGSEL_SHIFT];
1759 crypto_ahash_set_reqsize(__crypto_ahash_cast(tfm),
1760 sizeof(struct caam_hash_state));
1761 return ahash_set_sh_desc(ahash);
1764 static void caam_hash_cra_exit(struct crypto_tfm *tfm)
1766 struct caam_hash_ctx *ctx = crypto_tfm_ctx(tfm);
1768 dma_unmap_single_attrs(ctx->jrdev, ctx->sh_desc_update_dma,
1769 offsetof(struct caam_hash_ctx,
1770 sh_desc_update_dma),
1771 DMA_TO_DEVICE, DMA_ATTR_SKIP_CPU_SYNC);
1772 caam_jr_free(ctx->jrdev);
1775 static void __exit caam_algapi_hash_exit(void)
1777 struct caam_hash_alg *t_alg, *n;
1779 if (!hash_list.next)
1782 list_for_each_entry_safe(t_alg, n, &hash_list, entry) {
1783 crypto_unregister_ahash(&t_alg->ahash_alg);
1784 list_del(&t_alg->entry);
1789 static struct caam_hash_alg *
1790 caam_hash_alloc(struct caam_hash_template *template,
1793 struct caam_hash_alg *t_alg;
1794 struct ahash_alg *halg;
1795 struct crypto_alg *alg;
1797 t_alg = kzalloc(sizeof(*t_alg), GFP_KERNEL);
1799 pr_err("failed to allocate t_alg\n");
1800 return ERR_PTR(-ENOMEM);
1803 t_alg->ahash_alg = template->template_ahash;
1804 halg = &t_alg->ahash_alg;
1805 alg = &halg->halg.base;
1808 snprintf(alg->cra_name, CRYPTO_MAX_ALG_NAME, "%s",
1809 template->hmac_name);
1810 snprintf(alg->cra_driver_name, CRYPTO_MAX_ALG_NAME, "%s",
1811 template->hmac_driver_name);
1813 snprintf(alg->cra_name, CRYPTO_MAX_ALG_NAME, "%s",
1815 snprintf(alg->cra_driver_name, CRYPTO_MAX_ALG_NAME, "%s",
1816 template->driver_name);
1817 t_alg->ahash_alg.setkey = NULL;
1819 alg->cra_module = THIS_MODULE;
1820 alg->cra_init = caam_hash_cra_init;
1821 alg->cra_exit = caam_hash_cra_exit;
1822 alg->cra_ctxsize = sizeof(struct caam_hash_ctx);
1823 alg->cra_priority = CAAM_CRA_PRIORITY;
1824 alg->cra_blocksize = template->blocksize;
1825 alg->cra_alignmask = 0;
1826 alg->cra_flags = CRYPTO_ALG_ASYNC | CRYPTO_ALG_TYPE_AHASH;
1827 alg->cra_type = &crypto_ahash_type;
1829 t_alg->alg_type = template->alg_type;
1834 static int __init caam_algapi_hash_init(void)
1836 struct device_node *dev_node;
1837 struct platform_device *pdev;
1838 struct device *ctrldev;
1840 struct caam_drv_private *priv;
1841 unsigned int md_limit = SHA512_DIGEST_SIZE;
1842 u32 cha_inst, cha_vid;
1844 dev_node = of_find_compatible_node(NULL, NULL, "fsl,sec-v4.0");
1846 dev_node = of_find_compatible_node(NULL, NULL, "fsl,sec4.0");
1851 pdev = of_find_device_by_node(dev_node);
1853 of_node_put(dev_node);
1857 ctrldev = &pdev->dev;
1858 priv = dev_get_drvdata(ctrldev);
1859 of_node_put(dev_node);
1862 * If priv is NULL, it's probably because the caam driver wasn't
1863 * properly initialized (e.g. RNG4 init failed). Thus, bail out here.
1869 * Register crypto algorithms the device supports. First, identify
1870 * presence and attributes of MD block.
1872 cha_vid = rd_reg32(&priv->ctrl->perfmon.cha_id_ls);
1873 cha_inst = rd_reg32(&priv->ctrl->perfmon.cha_num_ls);
1876 * Skip registration of any hashing algorithms if MD block
1879 if (!((cha_inst & CHA_ID_LS_MD_MASK) >> CHA_ID_LS_MD_SHIFT))
1882 /* Limit digest size based on LP256 */
1883 if ((cha_vid & CHA_ID_LS_MD_MASK) == CHA_ID_LS_MD_LP256)
1884 md_limit = SHA256_DIGEST_SIZE;
1886 INIT_LIST_HEAD(&hash_list);
1888 /* register crypto algorithms the device supports */
1889 for (i = 0; i < ARRAY_SIZE(driver_hash); i++) {
1890 struct caam_hash_alg *t_alg;
1891 struct caam_hash_template *alg = driver_hash + i;
1893 /* If MD size is not supported by device, skip registration */
1894 if (alg->template_ahash.halg.digestsize > md_limit)
1897 /* register hmac version */
1898 t_alg = caam_hash_alloc(alg, true);
1899 if (IS_ERR(t_alg)) {
1900 err = PTR_ERR(t_alg);
1901 pr_warn("%s alg allocation failed\n", alg->driver_name);
1905 err = crypto_register_ahash(&t_alg->ahash_alg);
1907 pr_warn("%s alg registration failed: %d\n",
1908 t_alg->ahash_alg.halg.base.cra_driver_name,
1912 list_add_tail(&t_alg->entry, &hash_list);
1914 /* register unkeyed version */
1915 t_alg = caam_hash_alloc(alg, false);
1916 if (IS_ERR(t_alg)) {
1917 err = PTR_ERR(t_alg);
1918 pr_warn("%s alg allocation failed\n", alg->driver_name);
1922 err = crypto_register_ahash(&t_alg->ahash_alg);
1924 pr_warn("%s alg registration failed: %d\n",
1925 t_alg->ahash_alg.halg.base.cra_driver_name,
1929 list_add_tail(&t_alg->entry, &hash_list);
1935 module_init(caam_algapi_hash_init);
1936 module_exit(caam_algapi_hash_exit);
1938 MODULE_LICENSE("GPL");
1939 MODULE_DESCRIPTION("FSL CAAM support for ahash functions of crypto API");
1940 MODULE_AUTHOR("Freescale Semiconductor - NMG");