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;
1113 state->buf_dma = dma_map_single(jrdev, buf, buflen,
1115 if (dma_mapping_error(jrdev, state->buf_dma)) {
1116 dev_err(jrdev, "unable to map src\n");
1120 append_seq_in_ptr(desc, state->buf_dma, buflen, 0);
1123 edesc->dst_dma = map_seq_out_ptr_result(desc, jrdev, req->result,
1125 if (dma_mapping_error(jrdev, edesc->dst_dma)) {
1126 dev_err(jrdev, "unable to map dst\n");
1129 edesc->src_nents = 0;
1132 print_hex_dump(KERN_ERR, "jobdesc@"__stringify(__LINE__)": ",
1133 DUMP_PREFIX_ADDRESS, 16, 4, desc, desc_bytes(desc), 1);
1136 ret = caam_jr_enqueue(jrdev, desc, ahash_done, req);
1140 ahash_unmap(jrdev, edesc, req, digestsize);
1146 ahash_unmap(jrdev, edesc, req, digestsize);
1152 /* submit ahash update if it the first job descriptor after update */
1153 static int ahash_update_no_ctx(struct ahash_request *req)
1155 struct crypto_ahash *ahash = crypto_ahash_reqtfm(req);
1156 struct caam_hash_ctx *ctx = crypto_ahash_ctx(ahash);
1157 struct caam_hash_state *state = ahash_request_ctx(req);
1158 struct device *jrdev = ctx->jrdev;
1159 gfp_t flags = (req->base.flags & CRYPTO_TFM_REQ_MAY_SLEEP) ?
1160 GFP_KERNEL : GFP_ATOMIC;
1161 u8 *buf = current_buf(state);
1162 int *buflen = current_buflen(state);
1163 u8 *next_buf = alt_buf(state);
1164 int *next_buflen = alt_buflen(state);
1165 int in_len = *buflen + req->nbytes, to_hash;
1166 int sec4_sg_bytes, src_nents, mapped_nents;
1167 struct ahash_edesc *edesc;
1171 *next_buflen = in_len & (crypto_tfm_alg_blocksize(&ahash->base) - 1);
1172 to_hash = in_len - *next_buflen;
1175 src_nents = sg_nents_for_len(req->src,
1176 req->nbytes - *next_buflen);
1177 if (src_nents < 0) {
1178 dev_err(jrdev, "Invalid number of src SG.\n");
1183 mapped_nents = dma_map_sg(jrdev, req->src, src_nents,
1185 if (!mapped_nents) {
1186 dev_err(jrdev, "unable to DMA map source\n");
1193 sec4_sg_bytes = (1 + mapped_nents) *
1194 sizeof(struct sec4_sg_entry);
1197 * allocate space for base edesc and hw desc commands,
1200 edesc = ahash_edesc_alloc(ctx, 1 + mapped_nents,
1201 ctx->sh_desc_update_first,
1202 ctx->sh_desc_update_first_dma,
1205 dma_unmap_sg(jrdev, req->src, src_nents, DMA_TO_DEVICE);
1209 edesc->src_nents = src_nents;
1210 edesc->sec4_sg_bytes = sec4_sg_bytes;
1213 ret = buf_map_to_sec4_sg(jrdev, edesc->sec4_sg, state);
1217 sg_to_sec4_sg_last(req->src, mapped_nents,
1218 edesc->sec4_sg + 1, 0);
1221 scatterwalk_map_and_copy(next_buf, req->src,
1226 desc = edesc->hw_desc;
1228 edesc->sec4_sg_dma = dma_map_single(jrdev, edesc->sec4_sg,
1231 if (dma_mapping_error(jrdev, edesc->sec4_sg_dma)) {
1232 dev_err(jrdev, "unable to map S/G table\n");
1237 append_seq_in_ptr(desc, edesc->sec4_sg_dma, to_hash, LDST_SGF);
1239 ret = map_seq_out_ptr_ctx(desc, jrdev, state, ctx->ctx_len);
1244 print_hex_dump(KERN_ERR, "jobdesc@"__stringify(__LINE__)": ",
1245 DUMP_PREFIX_ADDRESS, 16, 4, desc,
1246 desc_bytes(desc), 1);
1249 ret = caam_jr_enqueue(jrdev, desc, ahash_done_ctx_dst, req);
1254 state->update = ahash_update_ctx;
1255 state->finup = ahash_finup_ctx;
1256 state->final = ahash_final_ctx;
1257 } else if (*next_buflen) {
1258 scatterwalk_map_and_copy(buf + *buflen, req->src, 0,
1260 *buflen = *next_buflen;
1264 print_hex_dump(KERN_ERR, "buf@"__stringify(__LINE__)": ",
1265 DUMP_PREFIX_ADDRESS, 16, 4, buf, *buflen, 1);
1266 print_hex_dump(KERN_ERR, "next buf@"__stringify(__LINE__)": ",
1267 DUMP_PREFIX_ADDRESS, 16, 4, next_buf,
1273 ahash_unmap_ctx(jrdev, edesc, req, ctx->ctx_len, DMA_TO_DEVICE);
1278 /* submit ahash finup if it the first job descriptor after update */
1279 static int ahash_finup_no_ctx(struct ahash_request *req)
1281 struct crypto_ahash *ahash = crypto_ahash_reqtfm(req);
1282 struct caam_hash_ctx *ctx = crypto_ahash_ctx(ahash);
1283 struct caam_hash_state *state = ahash_request_ctx(req);
1284 struct device *jrdev = ctx->jrdev;
1285 gfp_t flags = (req->base.flags & CRYPTO_TFM_REQ_MAY_SLEEP) ?
1286 GFP_KERNEL : GFP_ATOMIC;
1287 int buflen = *current_buflen(state);
1289 int sec4_sg_bytes, sec4_sg_src_index, src_nents, mapped_nents;
1290 int digestsize = crypto_ahash_digestsize(ahash);
1291 struct ahash_edesc *edesc;
1294 src_nents = sg_nents_for_len(req->src, req->nbytes);
1295 if (src_nents < 0) {
1296 dev_err(jrdev, "Invalid number of src SG.\n");
1301 mapped_nents = dma_map_sg(jrdev, req->src, src_nents,
1303 if (!mapped_nents) {
1304 dev_err(jrdev, "unable to DMA map source\n");
1311 sec4_sg_src_index = 2;
1312 sec4_sg_bytes = (sec4_sg_src_index + mapped_nents) *
1313 sizeof(struct sec4_sg_entry);
1315 /* allocate space for base edesc and hw desc commands, link tables */
1316 edesc = ahash_edesc_alloc(ctx, sec4_sg_src_index + mapped_nents,
1317 ctx->sh_desc_digest, ctx->sh_desc_digest_dma,
1320 dma_unmap_sg(jrdev, req->src, src_nents, DMA_TO_DEVICE);
1324 desc = edesc->hw_desc;
1326 edesc->src_nents = src_nents;
1327 edesc->sec4_sg_bytes = sec4_sg_bytes;
1329 ret = buf_map_to_sec4_sg(jrdev, edesc->sec4_sg, state);
1333 ret = ahash_edesc_add_src(ctx, edesc, req, mapped_nents, 1, buflen,
1336 dev_err(jrdev, "unable to map S/G table\n");
1340 edesc->dst_dma = map_seq_out_ptr_result(desc, jrdev, req->result,
1342 if (dma_mapping_error(jrdev, edesc->dst_dma)) {
1343 dev_err(jrdev, "unable to map dst\n");
1348 print_hex_dump(KERN_ERR, "jobdesc@"__stringify(__LINE__)": ",
1349 DUMP_PREFIX_ADDRESS, 16, 4, desc, desc_bytes(desc), 1);
1352 ret = caam_jr_enqueue(jrdev, desc, ahash_done, req);
1356 ahash_unmap(jrdev, edesc, req, digestsize);
1362 ahash_unmap(jrdev, edesc, req, digestsize);
1368 /* submit first update job descriptor after init */
1369 static int ahash_update_first(struct ahash_request *req)
1371 struct crypto_ahash *ahash = crypto_ahash_reqtfm(req);
1372 struct caam_hash_ctx *ctx = crypto_ahash_ctx(ahash);
1373 struct caam_hash_state *state = ahash_request_ctx(req);
1374 struct device *jrdev = ctx->jrdev;
1375 gfp_t flags = (req->base.flags & CRYPTO_TFM_REQ_MAY_SLEEP) ?
1376 GFP_KERNEL : GFP_ATOMIC;
1377 u8 *next_buf = alt_buf(state);
1378 int *next_buflen = alt_buflen(state);
1381 int src_nents, mapped_nents;
1382 struct ahash_edesc *edesc;
1385 *next_buflen = req->nbytes & (crypto_tfm_alg_blocksize(&ahash->base) -
1387 to_hash = req->nbytes - *next_buflen;
1390 src_nents = sg_nents_for_len(req->src,
1391 req->nbytes - *next_buflen);
1392 if (src_nents < 0) {
1393 dev_err(jrdev, "Invalid number of src SG.\n");
1398 mapped_nents = dma_map_sg(jrdev, req->src, src_nents,
1400 if (!mapped_nents) {
1401 dev_err(jrdev, "unable to map source for DMA\n");
1409 * allocate space for base edesc and hw desc commands,
1412 edesc = ahash_edesc_alloc(ctx, mapped_nents > 1 ?
1414 ctx->sh_desc_update_first,
1415 ctx->sh_desc_update_first_dma,
1418 dma_unmap_sg(jrdev, req->src, src_nents, DMA_TO_DEVICE);
1422 edesc->src_nents = src_nents;
1425 ret = ahash_edesc_add_src(ctx, edesc, req, mapped_nents, 0, 0,
1431 scatterwalk_map_and_copy(next_buf, req->src, to_hash,
1434 desc = edesc->hw_desc;
1436 ret = map_seq_out_ptr_ctx(desc, jrdev, state, ctx->ctx_len);
1441 print_hex_dump(KERN_ERR, "jobdesc@"__stringify(__LINE__)": ",
1442 DUMP_PREFIX_ADDRESS, 16, 4, desc,
1443 desc_bytes(desc), 1);
1446 ret = caam_jr_enqueue(jrdev, desc, ahash_done_ctx_dst, req);
1451 state->update = ahash_update_ctx;
1452 state->finup = ahash_finup_ctx;
1453 state->final = ahash_final_ctx;
1454 } else if (*next_buflen) {
1455 state->update = ahash_update_no_ctx;
1456 state->finup = ahash_finup_no_ctx;
1457 state->final = ahash_final_no_ctx;
1458 scatterwalk_map_and_copy(next_buf, req->src, 0,
1463 print_hex_dump(KERN_ERR, "next buf@"__stringify(__LINE__)": ",
1464 DUMP_PREFIX_ADDRESS, 16, 4, next_buf,
1470 ahash_unmap_ctx(jrdev, edesc, req, ctx->ctx_len, DMA_TO_DEVICE);
1475 static int ahash_finup_first(struct ahash_request *req)
1477 return ahash_digest(req);
1480 static int ahash_init(struct ahash_request *req)
1482 struct caam_hash_state *state = ahash_request_ctx(req);
1484 state->update = ahash_update_first;
1485 state->finup = ahash_finup_first;
1486 state->final = ahash_final_no_ctx;
1489 state->current_buf = 0;
1491 state->buflen_0 = 0;
1492 state->buflen_1 = 0;
1497 static int ahash_update(struct ahash_request *req)
1499 struct caam_hash_state *state = ahash_request_ctx(req);
1501 return state->update(req);
1504 static int ahash_finup(struct ahash_request *req)
1506 struct caam_hash_state *state = ahash_request_ctx(req);
1508 return state->finup(req);
1511 static int ahash_final(struct ahash_request *req)
1513 struct caam_hash_state *state = ahash_request_ctx(req);
1515 return state->final(req);
1518 static int ahash_export(struct ahash_request *req, void *out)
1520 struct caam_hash_state *state = ahash_request_ctx(req);
1521 struct caam_export_state *export = out;
1525 if (state->current_buf) {
1527 len = state->buflen_1;
1530 len = state->buflen_0;
1533 memcpy(export->buf, buf, len);
1534 memcpy(export->caam_ctx, state->caam_ctx, sizeof(export->caam_ctx));
1535 export->buflen = len;
1536 export->update = state->update;
1537 export->final = state->final;
1538 export->finup = state->finup;
1543 static int ahash_import(struct ahash_request *req, const void *in)
1545 struct caam_hash_state *state = ahash_request_ctx(req);
1546 const struct caam_export_state *export = in;
1548 memset(state, 0, sizeof(*state));
1549 memcpy(state->buf_0, export->buf, export->buflen);
1550 memcpy(state->caam_ctx, export->caam_ctx, sizeof(state->caam_ctx));
1551 state->buflen_0 = export->buflen;
1552 state->update = export->update;
1553 state->final = export->final;
1554 state->finup = export->finup;
1559 struct caam_hash_template {
1560 char name[CRYPTO_MAX_ALG_NAME];
1561 char driver_name[CRYPTO_MAX_ALG_NAME];
1562 char hmac_name[CRYPTO_MAX_ALG_NAME];
1563 char hmac_driver_name[CRYPTO_MAX_ALG_NAME];
1564 unsigned int blocksize;
1565 struct ahash_alg template_ahash;
1569 /* ahash descriptors */
1570 static struct caam_hash_template driver_hash[] = {
1573 .driver_name = "sha1-caam",
1574 .hmac_name = "hmac(sha1)",
1575 .hmac_driver_name = "hmac-sha1-caam",
1576 .blocksize = SHA1_BLOCK_SIZE,
1579 .update = ahash_update,
1580 .final = ahash_final,
1581 .finup = ahash_finup,
1582 .digest = ahash_digest,
1583 .export = ahash_export,
1584 .import = ahash_import,
1585 .setkey = ahash_setkey,
1587 .digestsize = SHA1_DIGEST_SIZE,
1588 .statesize = sizeof(struct caam_export_state),
1591 .alg_type = OP_ALG_ALGSEL_SHA1,
1594 .driver_name = "sha224-caam",
1595 .hmac_name = "hmac(sha224)",
1596 .hmac_driver_name = "hmac-sha224-caam",
1597 .blocksize = SHA224_BLOCK_SIZE,
1600 .update = ahash_update,
1601 .final = ahash_final,
1602 .finup = ahash_finup,
1603 .digest = ahash_digest,
1604 .export = ahash_export,
1605 .import = ahash_import,
1606 .setkey = ahash_setkey,
1608 .digestsize = SHA224_DIGEST_SIZE,
1609 .statesize = sizeof(struct caam_export_state),
1612 .alg_type = OP_ALG_ALGSEL_SHA224,
1615 .driver_name = "sha256-caam",
1616 .hmac_name = "hmac(sha256)",
1617 .hmac_driver_name = "hmac-sha256-caam",
1618 .blocksize = SHA256_BLOCK_SIZE,
1621 .update = ahash_update,
1622 .final = ahash_final,
1623 .finup = ahash_finup,
1624 .digest = ahash_digest,
1625 .export = ahash_export,
1626 .import = ahash_import,
1627 .setkey = ahash_setkey,
1629 .digestsize = SHA256_DIGEST_SIZE,
1630 .statesize = sizeof(struct caam_export_state),
1633 .alg_type = OP_ALG_ALGSEL_SHA256,
1636 .driver_name = "sha384-caam",
1637 .hmac_name = "hmac(sha384)",
1638 .hmac_driver_name = "hmac-sha384-caam",
1639 .blocksize = SHA384_BLOCK_SIZE,
1642 .update = ahash_update,
1643 .final = ahash_final,
1644 .finup = ahash_finup,
1645 .digest = ahash_digest,
1646 .export = ahash_export,
1647 .import = ahash_import,
1648 .setkey = ahash_setkey,
1650 .digestsize = SHA384_DIGEST_SIZE,
1651 .statesize = sizeof(struct caam_export_state),
1654 .alg_type = OP_ALG_ALGSEL_SHA384,
1657 .driver_name = "sha512-caam",
1658 .hmac_name = "hmac(sha512)",
1659 .hmac_driver_name = "hmac-sha512-caam",
1660 .blocksize = SHA512_BLOCK_SIZE,
1663 .update = ahash_update,
1664 .final = ahash_final,
1665 .finup = ahash_finup,
1666 .digest = ahash_digest,
1667 .export = ahash_export,
1668 .import = ahash_import,
1669 .setkey = ahash_setkey,
1671 .digestsize = SHA512_DIGEST_SIZE,
1672 .statesize = sizeof(struct caam_export_state),
1675 .alg_type = OP_ALG_ALGSEL_SHA512,
1678 .driver_name = "md5-caam",
1679 .hmac_name = "hmac(md5)",
1680 .hmac_driver_name = "hmac-md5-caam",
1681 .blocksize = MD5_BLOCK_WORDS * 4,
1684 .update = ahash_update,
1685 .final = ahash_final,
1686 .finup = ahash_finup,
1687 .digest = ahash_digest,
1688 .export = ahash_export,
1689 .import = ahash_import,
1690 .setkey = ahash_setkey,
1692 .digestsize = MD5_DIGEST_SIZE,
1693 .statesize = sizeof(struct caam_export_state),
1696 .alg_type = OP_ALG_ALGSEL_MD5,
1700 struct caam_hash_alg {
1701 struct list_head entry;
1703 struct ahash_alg ahash_alg;
1706 static int caam_hash_cra_init(struct crypto_tfm *tfm)
1708 struct crypto_ahash *ahash = __crypto_ahash_cast(tfm);
1709 struct crypto_alg *base = tfm->__crt_alg;
1710 struct hash_alg_common *halg =
1711 container_of(base, struct hash_alg_common, base);
1712 struct ahash_alg *alg =
1713 container_of(halg, struct ahash_alg, halg);
1714 struct caam_hash_alg *caam_hash =
1715 container_of(alg, struct caam_hash_alg, ahash_alg);
1716 struct caam_hash_ctx *ctx = crypto_tfm_ctx(tfm);
1717 /* Sizes for MDHA running digests: MD5, SHA1, 224, 256, 384, 512 */
1718 static const u8 runninglen[] = { HASH_MSG_LEN + MD5_DIGEST_SIZE,
1719 HASH_MSG_LEN + SHA1_DIGEST_SIZE,
1721 HASH_MSG_LEN + SHA256_DIGEST_SIZE,
1723 HASH_MSG_LEN + SHA512_DIGEST_SIZE };
1724 dma_addr_t dma_addr;
1727 * Get a Job ring from Job Ring driver to ensure in-order
1728 * crypto request processing per tfm
1730 ctx->jrdev = caam_jr_alloc();
1731 if (IS_ERR(ctx->jrdev)) {
1732 pr_err("Job Ring Device allocation for transform failed\n");
1733 return PTR_ERR(ctx->jrdev);
1736 dma_addr = dma_map_single_attrs(ctx->jrdev, ctx->sh_desc_update,
1737 offsetof(struct caam_hash_ctx,
1738 sh_desc_update_dma),
1739 DMA_TO_DEVICE, DMA_ATTR_SKIP_CPU_SYNC);
1740 if (dma_mapping_error(ctx->jrdev, dma_addr)) {
1741 dev_err(ctx->jrdev, "unable to map shared descriptors\n");
1742 caam_jr_free(ctx->jrdev);
1746 ctx->sh_desc_update_dma = dma_addr;
1747 ctx->sh_desc_update_first_dma = dma_addr +
1748 offsetof(struct caam_hash_ctx,
1749 sh_desc_update_first);
1750 ctx->sh_desc_fin_dma = dma_addr + offsetof(struct caam_hash_ctx,
1752 ctx->sh_desc_digest_dma = dma_addr + offsetof(struct caam_hash_ctx,
1755 /* copy descriptor header template value */
1756 ctx->adata.algtype = OP_TYPE_CLASS2_ALG | caam_hash->alg_type;
1758 ctx->ctx_len = runninglen[(ctx->adata.algtype &
1759 OP_ALG_ALGSEL_SUBMASK) >>
1760 OP_ALG_ALGSEL_SHIFT];
1762 crypto_ahash_set_reqsize(__crypto_ahash_cast(tfm),
1763 sizeof(struct caam_hash_state));
1764 return ahash_set_sh_desc(ahash);
1767 static void caam_hash_cra_exit(struct crypto_tfm *tfm)
1769 struct caam_hash_ctx *ctx = crypto_tfm_ctx(tfm);
1771 dma_unmap_single_attrs(ctx->jrdev, ctx->sh_desc_update_dma,
1772 offsetof(struct caam_hash_ctx,
1773 sh_desc_update_dma),
1774 DMA_TO_DEVICE, DMA_ATTR_SKIP_CPU_SYNC);
1775 caam_jr_free(ctx->jrdev);
1778 static void __exit caam_algapi_hash_exit(void)
1780 struct caam_hash_alg *t_alg, *n;
1782 if (!hash_list.next)
1785 list_for_each_entry_safe(t_alg, n, &hash_list, entry) {
1786 crypto_unregister_ahash(&t_alg->ahash_alg);
1787 list_del(&t_alg->entry);
1792 static struct caam_hash_alg *
1793 caam_hash_alloc(struct caam_hash_template *template,
1796 struct caam_hash_alg *t_alg;
1797 struct ahash_alg *halg;
1798 struct crypto_alg *alg;
1800 t_alg = kzalloc(sizeof(*t_alg), GFP_KERNEL);
1802 pr_err("failed to allocate t_alg\n");
1803 return ERR_PTR(-ENOMEM);
1806 t_alg->ahash_alg = template->template_ahash;
1807 halg = &t_alg->ahash_alg;
1808 alg = &halg->halg.base;
1811 snprintf(alg->cra_name, CRYPTO_MAX_ALG_NAME, "%s",
1812 template->hmac_name);
1813 snprintf(alg->cra_driver_name, CRYPTO_MAX_ALG_NAME, "%s",
1814 template->hmac_driver_name);
1816 snprintf(alg->cra_name, CRYPTO_MAX_ALG_NAME, "%s",
1818 snprintf(alg->cra_driver_name, CRYPTO_MAX_ALG_NAME, "%s",
1819 template->driver_name);
1820 t_alg->ahash_alg.setkey = NULL;
1822 alg->cra_module = THIS_MODULE;
1823 alg->cra_init = caam_hash_cra_init;
1824 alg->cra_exit = caam_hash_cra_exit;
1825 alg->cra_ctxsize = sizeof(struct caam_hash_ctx);
1826 alg->cra_priority = CAAM_CRA_PRIORITY;
1827 alg->cra_blocksize = template->blocksize;
1828 alg->cra_alignmask = 0;
1829 alg->cra_flags = CRYPTO_ALG_ASYNC | CRYPTO_ALG_TYPE_AHASH;
1830 alg->cra_type = &crypto_ahash_type;
1832 t_alg->alg_type = template->alg_type;
1837 static int __init caam_algapi_hash_init(void)
1839 struct device_node *dev_node;
1840 struct platform_device *pdev;
1841 struct device *ctrldev;
1843 struct caam_drv_private *priv;
1844 unsigned int md_limit = SHA512_DIGEST_SIZE;
1845 u32 cha_inst, cha_vid;
1847 dev_node = of_find_compatible_node(NULL, NULL, "fsl,sec-v4.0");
1849 dev_node = of_find_compatible_node(NULL, NULL, "fsl,sec4.0");
1854 pdev = of_find_device_by_node(dev_node);
1856 of_node_put(dev_node);
1860 ctrldev = &pdev->dev;
1861 priv = dev_get_drvdata(ctrldev);
1862 of_node_put(dev_node);
1865 * If priv is NULL, it's probably because the caam driver wasn't
1866 * properly initialized (e.g. RNG4 init failed). Thus, bail out here.
1872 * Register crypto algorithms the device supports. First, identify
1873 * presence and attributes of MD block.
1875 cha_vid = rd_reg32(&priv->ctrl->perfmon.cha_id_ls);
1876 cha_inst = rd_reg32(&priv->ctrl->perfmon.cha_num_ls);
1879 * Skip registration of any hashing algorithms if MD block
1882 if (!((cha_inst & CHA_ID_LS_MD_MASK) >> CHA_ID_LS_MD_SHIFT))
1885 /* Limit digest size based on LP256 */
1886 if ((cha_vid & CHA_ID_LS_MD_MASK) == CHA_ID_LS_MD_LP256)
1887 md_limit = SHA256_DIGEST_SIZE;
1889 INIT_LIST_HEAD(&hash_list);
1891 /* register crypto algorithms the device supports */
1892 for (i = 0; i < ARRAY_SIZE(driver_hash); i++) {
1893 struct caam_hash_alg *t_alg;
1894 struct caam_hash_template *alg = driver_hash + i;
1896 /* If MD size is not supported by device, skip registration */
1897 if (alg->template_ahash.halg.digestsize > md_limit)
1900 /* register hmac version */
1901 t_alg = caam_hash_alloc(alg, true);
1902 if (IS_ERR(t_alg)) {
1903 err = PTR_ERR(t_alg);
1904 pr_warn("%s alg allocation failed\n", alg->driver_name);
1908 err = crypto_register_ahash(&t_alg->ahash_alg);
1910 pr_warn("%s alg registration failed: %d\n",
1911 t_alg->ahash_alg.halg.base.cra_driver_name,
1915 list_add_tail(&t_alg->entry, &hash_list);
1917 /* register unkeyed version */
1918 t_alg = caam_hash_alloc(alg, false);
1919 if (IS_ERR(t_alg)) {
1920 err = PTR_ERR(t_alg);
1921 pr_warn("%s alg allocation failed\n", alg->driver_name);
1925 err = crypto_register_ahash(&t_alg->ahash_alg);
1927 pr_warn("%s alg registration failed: %d\n",
1928 t_alg->ahash_alg.halg.base.cra_driver_name,
1932 list_add_tail(&t_alg->entry, &hash_list);
1938 module_init(caam_algapi_hash_init);
1939 module_exit(caam_algapi_hash_exit);
1941 MODULE_LICENSE("GPL");
1942 MODULE_DESCRIPTION("FSL CAAM support for ahash functions of crypto API");
1943 MODULE_AUTHOR("Freescale Semiconductor - NMG");