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045e3678 YK |
1 | /* |
2 | * caam - Freescale FSL CAAM support for ahash functions of crypto API | |
3 | * | |
4 | * Copyright 2011 Freescale Semiconductor, Inc. | |
5 | * | |
6 | * Based on caamalg.c crypto API driver. | |
7 | * | |
8 | * relationship of digest job descriptor or first job descriptor after init to | |
9 | * shared descriptors: | |
10 | * | |
11 | * --------------- --------------- | |
12 | * | JobDesc #1 |-------------------->| ShareDesc | | |
13 | * | *(packet 1) | | (hashKey) | | |
14 | * --------------- | (operation) | | |
15 | * --------------- | |
16 | * | |
17 | * relationship of subsequent job descriptors to shared descriptors: | |
18 | * | |
19 | * --------------- --------------- | |
20 | * | JobDesc #2 |-------------------->| ShareDesc | | |
21 | * | *(packet 2) | |------------->| (hashKey) | | |
22 | * --------------- | |-------->| (operation) | | |
23 | * . | | | (load ctx2) | | |
24 | * . | | --------------- | |
25 | * --------------- | | | |
26 | * | JobDesc #3 |------| | | |
27 | * | *(packet 3) | | | |
28 | * --------------- | | |
29 | * . | | |
30 | * . | | |
31 | * --------------- | | |
32 | * | JobDesc #4 |------------ | |
33 | * | *(packet 4) | | |
34 | * --------------- | |
35 | * | |
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. | |
41 | * | |
42 | * So, a job desc looks like: | |
43 | * | |
44 | * --------------------- | |
45 | * | Header | | |
46 | * | ShareDesc Pointer | | |
47 | * | SEQ_OUT_PTR | | |
48 | * | (output buffer) | | |
49 | * | (output length) | | |
50 | * | SEQ_IN_PTR | | |
51 | * | (input buffer) | | |
52 | * | (input length) | | |
53 | * --------------------- | |
54 | */ | |
55 | ||
56 | #include "compat.h" | |
57 | ||
58 | #include "regs.h" | |
59 | #include "intern.h" | |
60 | #include "desc_constr.h" | |
61 | #include "jr.h" | |
62 | #include "error.h" | |
63 | #include "sg_sw_sec4.h" | |
64 | #include "key_gen.h" | |
65 | ||
66 | #define CAAM_CRA_PRIORITY 3000 | |
67 | ||
68 | /* max hash key is max split key size */ | |
69 | #define CAAM_MAX_HASH_KEY_SIZE (SHA512_DIGEST_SIZE * 2) | |
70 | ||
71 | #define CAAM_MAX_HASH_BLOCK_SIZE SHA512_BLOCK_SIZE | |
72 | #define CAAM_MAX_HASH_DIGEST_SIZE SHA512_DIGEST_SIZE | |
73 | ||
74 | /* length of descriptors text */ | |
045e3678 YK |
75 | #define DESC_AHASH_BASE (4 * 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) | |
81 | ||
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) | |
85 | ||
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) | |
89 | ||
90 | #ifdef DEBUG | |
91 | /* for print_hex_dumps with line references */ | |
045e3678 YK |
92 | #define debug(format, arg...) printk(format, arg) |
93 | #else | |
94 | #define debug(format, arg...) | |
95 | #endif | |
96 | ||
97 | /* ahash per-session context */ | |
98 | struct caam_hash_ctx { | |
99 | struct device *jrdev; | |
100 | u32 sh_desc_update[DESC_HASH_MAX_USED_LEN]; | |
101 | u32 sh_desc_update_first[DESC_HASH_MAX_USED_LEN]; | |
102 | u32 sh_desc_fin[DESC_HASH_MAX_USED_LEN]; | |
103 | u32 sh_desc_digest[DESC_HASH_MAX_USED_LEN]; | |
104 | u32 sh_desc_finup[DESC_HASH_MAX_USED_LEN]; | |
105 | dma_addr_t sh_desc_update_dma; | |
106 | dma_addr_t sh_desc_update_first_dma; | |
107 | dma_addr_t sh_desc_fin_dma; | |
108 | dma_addr_t sh_desc_digest_dma; | |
109 | dma_addr_t sh_desc_finup_dma; | |
110 | u32 alg_type; | |
111 | u32 alg_op; | |
112 | u8 key[CAAM_MAX_HASH_KEY_SIZE]; | |
113 | dma_addr_t key_dma; | |
114 | int ctx_len; | |
115 | unsigned int split_key_len; | |
116 | unsigned int split_key_pad_len; | |
117 | }; | |
118 | ||
119 | /* ahash state */ | |
120 | struct caam_hash_state { | |
121 | dma_addr_t buf_dma; | |
122 | dma_addr_t ctx_dma; | |
123 | u8 buf_0[CAAM_MAX_HASH_BLOCK_SIZE] ____cacheline_aligned; | |
124 | int buflen_0; | |
125 | u8 buf_1[CAAM_MAX_HASH_BLOCK_SIZE] ____cacheline_aligned; | |
126 | int buflen_1; | |
127 | u8 caam_ctx[MAX_CTX_LEN]; | |
128 | int (*update)(struct ahash_request *req); | |
129 | int (*final)(struct ahash_request *req); | |
130 | int (*finup)(struct ahash_request *req); | |
131 | int current_buf; | |
132 | }; | |
133 | ||
134 | /* Common job descriptor seq in/out ptr routines */ | |
135 | ||
136 | /* Map state->caam_ctx, and append seq_out_ptr command that points to it */ | |
137 | static inline void map_seq_out_ptr_ctx(u32 *desc, struct device *jrdev, | |
138 | struct caam_hash_state *state, | |
139 | int ctx_len) | |
140 | { | |
141 | state->ctx_dma = dma_map_single(jrdev, state->caam_ctx, | |
142 | ctx_len, DMA_FROM_DEVICE); | |
143 | append_seq_out_ptr(desc, state->ctx_dma, ctx_len, 0); | |
144 | } | |
145 | ||
146 | /* Map req->result, and append seq_out_ptr command that points to it */ | |
147 | static inline dma_addr_t map_seq_out_ptr_result(u32 *desc, struct device *jrdev, | |
148 | u8 *result, int digestsize) | |
149 | { | |
150 | dma_addr_t dst_dma; | |
151 | ||
152 | dst_dma = dma_map_single(jrdev, result, digestsize, DMA_FROM_DEVICE); | |
153 | append_seq_out_ptr(desc, dst_dma, digestsize, 0); | |
154 | ||
155 | return dst_dma; | |
156 | } | |
157 | ||
158 | /* Map current buffer in state and put it in link table */ | |
159 | static inline dma_addr_t buf_map_to_sec4_sg(struct device *jrdev, | |
160 | struct sec4_sg_entry *sec4_sg, | |
161 | u8 *buf, int buflen) | |
162 | { | |
163 | dma_addr_t buf_dma; | |
164 | ||
165 | buf_dma = dma_map_single(jrdev, buf, buflen, DMA_TO_DEVICE); | |
166 | dma_to_sec4_sg_one(sec4_sg, buf_dma, buflen, 0); | |
167 | ||
168 | return buf_dma; | |
169 | } | |
170 | ||
171 | /* Map req->src and put it in link table */ | |
172 | static inline void src_map_to_sec4_sg(struct device *jrdev, | |
173 | struct scatterlist *src, int src_nents, | |
643b39b0 YK |
174 | struct sec4_sg_entry *sec4_sg, |
175 | bool chained) | |
045e3678 | 176 | { |
643b39b0 | 177 | dma_map_sg_chained(jrdev, src, src_nents, DMA_TO_DEVICE, chained); |
045e3678 YK |
178 | sg_to_sec4_sg_last(src, src_nents, sec4_sg, 0); |
179 | } | |
180 | ||
181 | /* | |
182 | * Only put buffer in link table if it contains data, which is possible, | |
183 | * since a buffer has previously been used, and needs to be unmapped, | |
184 | */ | |
185 | static inline dma_addr_t | |
186 | try_buf_map_to_sec4_sg(struct device *jrdev, struct sec4_sg_entry *sec4_sg, | |
187 | u8 *buf, dma_addr_t buf_dma, int buflen, | |
188 | int last_buflen) | |
189 | { | |
190 | if (buf_dma && !dma_mapping_error(jrdev, buf_dma)) | |
191 | dma_unmap_single(jrdev, buf_dma, last_buflen, DMA_TO_DEVICE); | |
192 | if (buflen) | |
193 | buf_dma = buf_map_to_sec4_sg(jrdev, sec4_sg, buf, buflen); | |
194 | else | |
195 | buf_dma = 0; | |
196 | ||
197 | return buf_dma; | |
198 | } | |
199 | ||
200 | /* Map state->caam_ctx, and add it to link table */ | |
201 | static inline void ctx_map_to_sec4_sg(u32 *desc, struct device *jrdev, | |
202 | struct caam_hash_state *state, | |
203 | int ctx_len, | |
204 | struct sec4_sg_entry *sec4_sg, | |
205 | u32 flag) | |
206 | { | |
207 | state->ctx_dma = dma_map_single(jrdev, state->caam_ctx, ctx_len, flag); | |
208 | dma_to_sec4_sg_one(sec4_sg, state->ctx_dma, ctx_len, 0); | |
209 | } | |
210 | ||
211 | /* Common shared descriptor commands */ | |
212 | static inline void append_key_ahash(u32 *desc, struct caam_hash_ctx *ctx) | |
213 | { | |
214 | append_key_as_imm(desc, ctx->key, ctx->split_key_pad_len, | |
215 | ctx->split_key_len, CLASS_2 | | |
216 | KEY_DEST_MDHA_SPLIT | KEY_ENC); | |
217 | } | |
218 | ||
219 | /* Append key if it has been set */ | |
220 | static inline void init_sh_desc_key_ahash(u32 *desc, struct caam_hash_ctx *ctx) | |
221 | { | |
222 | u32 *key_jump_cmd; | |
223 | ||
61bb86bb | 224 | init_sh_desc(desc, HDR_SHARE_SERIAL); |
045e3678 YK |
225 | |
226 | if (ctx->split_key_len) { | |
227 | /* Skip if already shared */ | |
228 | key_jump_cmd = append_jump(desc, JUMP_JSL | JUMP_TEST_ALL | | |
229 | JUMP_COND_SHRD); | |
230 | ||
231 | append_key_ahash(desc, ctx); | |
232 | ||
233 | set_jump_tgt_here(desc, key_jump_cmd); | |
234 | } | |
235 | ||
236 | /* Propagate errors from shared to job descriptor */ | |
237 | append_cmd(desc, SET_OK_NO_PROP_ERRORS | CMD_LOAD); | |
238 | } | |
239 | ||
240 | /* | |
241 | * For ahash read data from seqin following state->caam_ctx, | |
242 | * and write resulting class2 context to seqout, which may be state->caam_ctx | |
243 | * or req->result | |
244 | */ | |
245 | static inline void ahash_append_load_str(u32 *desc, int digestsize) | |
246 | { | |
247 | /* Calculate remaining bytes to read */ | |
248 | append_math_add(desc, VARSEQINLEN, SEQINLEN, REG0, CAAM_CMD_SZ); | |
249 | ||
250 | /* Read remaining bytes */ | |
251 | append_seq_fifo_load(desc, 0, FIFOLD_CLASS_CLASS2 | FIFOLD_TYPE_LAST2 | | |
252 | FIFOLD_TYPE_MSG | KEY_VLF); | |
253 | ||
254 | /* Store class2 context bytes */ | |
255 | append_seq_store(desc, digestsize, LDST_CLASS_2_CCB | | |
256 | LDST_SRCDST_BYTE_CONTEXT); | |
257 | } | |
258 | ||
259 | /* | |
260 | * For ahash update, final and finup, import context, read and write to seqout | |
261 | */ | |
262 | static inline void ahash_ctx_data_to_out(u32 *desc, u32 op, u32 state, | |
263 | int digestsize, | |
264 | struct caam_hash_ctx *ctx) | |
265 | { | |
266 | init_sh_desc_key_ahash(desc, ctx); | |
267 | ||
268 | /* Import context from software */ | |
269 | append_cmd(desc, CMD_SEQ_LOAD | LDST_SRCDST_BYTE_CONTEXT | | |
270 | LDST_CLASS_2_CCB | ctx->ctx_len); | |
271 | ||
272 | /* Class 2 operation */ | |
273 | append_operation(desc, op | state | OP_ALG_ENCRYPT); | |
274 | ||
275 | /* | |
276 | * Load from buf and/or src and write to req->result or state->context | |
277 | */ | |
278 | ahash_append_load_str(desc, digestsize); | |
279 | } | |
280 | ||
281 | /* For ahash firsts and digest, read and write to seqout */ | |
282 | static inline void ahash_data_to_out(u32 *desc, u32 op, u32 state, | |
283 | int digestsize, struct caam_hash_ctx *ctx) | |
284 | { | |
285 | init_sh_desc_key_ahash(desc, ctx); | |
286 | ||
287 | /* Class 2 operation */ | |
288 | append_operation(desc, op | state | OP_ALG_ENCRYPT); | |
289 | ||
290 | /* | |
291 | * Load from buf and/or src and write to req->result or state->context | |
292 | */ | |
293 | ahash_append_load_str(desc, digestsize); | |
294 | } | |
295 | ||
296 | static int ahash_set_sh_desc(struct crypto_ahash *ahash) | |
297 | { | |
298 | struct caam_hash_ctx *ctx = crypto_ahash_ctx(ahash); | |
299 | int digestsize = crypto_ahash_digestsize(ahash); | |
300 | struct device *jrdev = ctx->jrdev; | |
301 | u32 have_key = 0; | |
302 | u32 *desc; | |
303 | ||
304 | if (ctx->split_key_len) | |
305 | have_key = OP_ALG_AAI_HMAC_PRECOMP; | |
306 | ||
307 | /* ahash_update shared descriptor */ | |
308 | desc = ctx->sh_desc_update; | |
309 | ||
61bb86bb | 310 | init_sh_desc(desc, HDR_SHARE_SERIAL); |
045e3678 YK |
311 | |
312 | /* Import context from software */ | |
313 | append_cmd(desc, CMD_SEQ_LOAD | LDST_SRCDST_BYTE_CONTEXT | | |
314 | LDST_CLASS_2_CCB | ctx->ctx_len); | |
315 | ||
316 | /* Class 2 operation */ | |
317 | append_operation(desc, ctx->alg_type | OP_ALG_AS_UPDATE | | |
318 | OP_ALG_ENCRYPT); | |
319 | ||
320 | /* Load data and write to result or context */ | |
321 | ahash_append_load_str(desc, ctx->ctx_len); | |
322 | ||
323 | ctx->sh_desc_update_dma = dma_map_single(jrdev, desc, desc_bytes(desc), | |
324 | DMA_TO_DEVICE); | |
325 | if (dma_mapping_error(jrdev, ctx->sh_desc_update_dma)) { | |
326 | dev_err(jrdev, "unable to map shared descriptor\n"); | |
327 | return -ENOMEM; | |
328 | } | |
329 | #ifdef DEBUG | |
514df281 AP |
330 | print_hex_dump(KERN_ERR, |
331 | "ahash update shdesc@"__stringify(__LINE__)": ", | |
045e3678 YK |
332 | DUMP_PREFIX_ADDRESS, 16, 4, desc, desc_bytes(desc), 1); |
333 | #endif | |
334 | ||
335 | /* ahash_update_first shared descriptor */ | |
336 | desc = ctx->sh_desc_update_first; | |
337 | ||
338 | ahash_data_to_out(desc, have_key | ctx->alg_type, OP_ALG_AS_INIT, | |
339 | ctx->ctx_len, ctx); | |
340 | ||
341 | ctx->sh_desc_update_first_dma = dma_map_single(jrdev, desc, | |
342 | desc_bytes(desc), | |
343 | DMA_TO_DEVICE); | |
344 | if (dma_mapping_error(jrdev, ctx->sh_desc_update_first_dma)) { | |
345 | dev_err(jrdev, "unable to map shared descriptor\n"); | |
346 | return -ENOMEM; | |
347 | } | |
348 | #ifdef DEBUG | |
514df281 AP |
349 | print_hex_dump(KERN_ERR, |
350 | "ahash update first shdesc@"__stringify(__LINE__)": ", | |
045e3678 YK |
351 | DUMP_PREFIX_ADDRESS, 16, 4, desc, desc_bytes(desc), 1); |
352 | #endif | |
353 | ||
354 | /* ahash_final shared descriptor */ | |
355 | desc = ctx->sh_desc_fin; | |
356 | ||
357 | ahash_ctx_data_to_out(desc, have_key | ctx->alg_type, | |
358 | OP_ALG_AS_FINALIZE, digestsize, ctx); | |
359 | ||
360 | ctx->sh_desc_fin_dma = dma_map_single(jrdev, desc, desc_bytes(desc), | |
361 | DMA_TO_DEVICE); | |
362 | if (dma_mapping_error(jrdev, ctx->sh_desc_fin_dma)) { | |
363 | dev_err(jrdev, "unable to map shared descriptor\n"); | |
364 | return -ENOMEM; | |
365 | } | |
366 | #ifdef DEBUG | |
514df281 | 367 | print_hex_dump(KERN_ERR, "ahash final shdesc@"__stringify(__LINE__)": ", |
045e3678 YK |
368 | DUMP_PREFIX_ADDRESS, 16, 4, desc, |
369 | desc_bytes(desc), 1); | |
370 | #endif | |
371 | ||
372 | /* ahash_finup shared descriptor */ | |
373 | desc = ctx->sh_desc_finup; | |
374 | ||
375 | ahash_ctx_data_to_out(desc, have_key | ctx->alg_type, | |
376 | OP_ALG_AS_FINALIZE, digestsize, ctx); | |
377 | ||
378 | ctx->sh_desc_finup_dma = dma_map_single(jrdev, desc, desc_bytes(desc), | |
379 | DMA_TO_DEVICE); | |
380 | if (dma_mapping_error(jrdev, ctx->sh_desc_finup_dma)) { | |
381 | dev_err(jrdev, "unable to map shared descriptor\n"); | |
382 | return -ENOMEM; | |
383 | } | |
384 | #ifdef DEBUG | |
514df281 | 385 | print_hex_dump(KERN_ERR, "ahash finup shdesc@"__stringify(__LINE__)": ", |
045e3678 YK |
386 | DUMP_PREFIX_ADDRESS, 16, 4, desc, |
387 | desc_bytes(desc), 1); | |
388 | #endif | |
389 | ||
390 | /* ahash_digest shared descriptor */ | |
391 | desc = ctx->sh_desc_digest; | |
392 | ||
393 | ahash_data_to_out(desc, have_key | ctx->alg_type, OP_ALG_AS_INITFINAL, | |
394 | digestsize, ctx); | |
395 | ||
396 | ctx->sh_desc_digest_dma = dma_map_single(jrdev, desc, | |
397 | desc_bytes(desc), | |
398 | DMA_TO_DEVICE); | |
399 | if (dma_mapping_error(jrdev, ctx->sh_desc_digest_dma)) { | |
400 | dev_err(jrdev, "unable to map shared descriptor\n"); | |
401 | return -ENOMEM; | |
402 | } | |
403 | #ifdef DEBUG | |
514df281 AP |
404 | print_hex_dump(KERN_ERR, |
405 | "ahash digest shdesc@"__stringify(__LINE__)": ", | |
045e3678 YK |
406 | DUMP_PREFIX_ADDRESS, 16, 4, desc, |
407 | desc_bytes(desc), 1); | |
408 | #endif | |
409 | ||
410 | return 0; | |
411 | } | |
412 | ||
66b3e887 | 413 | static int gen_split_hash_key(struct caam_hash_ctx *ctx, const u8 *key_in, |
045e3678 YK |
414 | u32 keylen) |
415 | { | |
416 | return gen_split_key(ctx->jrdev, ctx->key, ctx->split_key_len, | |
417 | ctx->split_key_pad_len, key_in, keylen, | |
418 | ctx->alg_op); | |
419 | } | |
420 | ||
421 | /* Digest hash size if it is too large */ | |
66b3e887 | 422 | static int hash_digest_key(struct caam_hash_ctx *ctx, const u8 *key_in, |
045e3678 YK |
423 | u32 *keylen, u8 *key_out, u32 digestsize) |
424 | { | |
425 | struct device *jrdev = ctx->jrdev; | |
426 | u32 *desc; | |
427 | struct split_key_result result; | |
428 | dma_addr_t src_dma, dst_dma; | |
429 | int ret = 0; | |
430 | ||
9c23b7d3 | 431 | desc = kmalloc(CAAM_CMD_SZ * 8 + CAAM_PTR_SZ * 2, GFP_KERNEL | GFP_DMA); |
2af8f4a2 KP |
432 | if (!desc) { |
433 | dev_err(jrdev, "unable to allocate key input memory\n"); | |
434 | return -ENOMEM; | |
435 | } | |
045e3678 YK |
436 | |
437 | init_job_desc(desc, 0); | |
438 | ||
439 | src_dma = dma_map_single(jrdev, (void *)key_in, *keylen, | |
440 | DMA_TO_DEVICE); | |
441 | if (dma_mapping_error(jrdev, src_dma)) { | |
442 | dev_err(jrdev, "unable to map key input memory\n"); | |
443 | kfree(desc); | |
444 | return -ENOMEM; | |
445 | } | |
446 | dst_dma = dma_map_single(jrdev, (void *)key_out, digestsize, | |
447 | DMA_FROM_DEVICE); | |
448 | if (dma_mapping_error(jrdev, dst_dma)) { | |
449 | dev_err(jrdev, "unable to map key output memory\n"); | |
450 | dma_unmap_single(jrdev, src_dma, *keylen, DMA_TO_DEVICE); | |
451 | kfree(desc); | |
452 | return -ENOMEM; | |
453 | } | |
454 | ||
455 | /* Job descriptor to perform unkeyed hash on key_in */ | |
456 | append_operation(desc, ctx->alg_type | OP_ALG_ENCRYPT | | |
457 | OP_ALG_AS_INITFINAL); | |
458 | append_seq_in_ptr(desc, src_dma, *keylen, 0); | |
459 | append_seq_fifo_load(desc, *keylen, FIFOLD_CLASS_CLASS2 | | |
460 | FIFOLD_TYPE_LAST2 | FIFOLD_TYPE_MSG); | |
461 | append_seq_out_ptr(desc, dst_dma, digestsize, 0); | |
462 | append_seq_store(desc, digestsize, LDST_CLASS_2_CCB | | |
463 | LDST_SRCDST_BYTE_CONTEXT); | |
464 | ||
465 | #ifdef DEBUG | |
514df281 | 466 | print_hex_dump(KERN_ERR, "key_in@"__stringify(__LINE__)": ", |
045e3678 | 467 | DUMP_PREFIX_ADDRESS, 16, 4, key_in, *keylen, 1); |
514df281 | 468 | print_hex_dump(KERN_ERR, "jobdesc@"__stringify(__LINE__)": ", |
045e3678 YK |
469 | DUMP_PREFIX_ADDRESS, 16, 4, desc, desc_bytes(desc), 1); |
470 | #endif | |
471 | ||
472 | result.err = 0; | |
473 | init_completion(&result.completion); | |
474 | ||
475 | ret = caam_jr_enqueue(jrdev, desc, split_key_done, &result); | |
476 | if (!ret) { | |
477 | /* in progress */ | |
478 | wait_for_completion_interruptible(&result.completion); | |
479 | ret = result.err; | |
480 | #ifdef DEBUG | |
514df281 AP |
481 | print_hex_dump(KERN_ERR, |
482 | "digested key@"__stringify(__LINE__)": ", | |
045e3678 YK |
483 | DUMP_PREFIX_ADDRESS, 16, 4, key_in, |
484 | digestsize, 1); | |
485 | #endif | |
486 | } | |
487 | *keylen = digestsize; | |
488 | ||
489 | dma_unmap_single(jrdev, src_dma, *keylen, DMA_TO_DEVICE); | |
490 | dma_unmap_single(jrdev, dst_dma, digestsize, DMA_FROM_DEVICE); | |
491 | ||
492 | kfree(desc); | |
493 | ||
494 | return ret; | |
495 | } | |
496 | ||
497 | static int ahash_setkey(struct crypto_ahash *ahash, | |
498 | const u8 *key, unsigned int keylen) | |
499 | { | |
500 | /* Sizes for MDHA pads (*not* keys): MD5, SHA1, 224, 256, 384, 512 */ | |
501 | static const u8 mdpadlen[] = { 16, 20, 32, 32, 64, 64 }; | |
502 | struct caam_hash_ctx *ctx = crypto_ahash_ctx(ahash); | |
503 | struct device *jrdev = ctx->jrdev; | |
504 | int blocksize = crypto_tfm_alg_blocksize(&ahash->base); | |
505 | int digestsize = crypto_ahash_digestsize(ahash); | |
506 | int ret = 0; | |
507 | u8 *hashed_key = NULL; | |
508 | ||
509 | #ifdef DEBUG | |
510 | printk(KERN_ERR "keylen %d\n", keylen); | |
511 | #endif | |
512 | ||
513 | if (keylen > blocksize) { | |
514 | hashed_key = kmalloc(sizeof(u8) * digestsize, GFP_KERNEL | | |
515 | GFP_DMA); | |
516 | if (!hashed_key) | |
517 | return -ENOMEM; | |
518 | ret = hash_digest_key(ctx, key, &keylen, hashed_key, | |
519 | digestsize); | |
520 | if (ret) | |
521 | goto badkey; | |
522 | key = hashed_key; | |
523 | } | |
524 | ||
525 | /* Pick class 2 key length from algorithm submask */ | |
526 | ctx->split_key_len = mdpadlen[(ctx->alg_op & OP_ALG_ALGSEL_SUBMASK) >> | |
527 | OP_ALG_ALGSEL_SHIFT] * 2; | |
528 | ctx->split_key_pad_len = ALIGN(ctx->split_key_len, 16); | |
529 | ||
530 | #ifdef DEBUG | |
531 | printk(KERN_ERR "split_key_len %d split_key_pad_len %d\n", | |
532 | ctx->split_key_len, ctx->split_key_pad_len); | |
514df281 | 533 | print_hex_dump(KERN_ERR, "key in @"__stringify(__LINE__)": ", |
045e3678 YK |
534 | DUMP_PREFIX_ADDRESS, 16, 4, key, keylen, 1); |
535 | #endif | |
536 | ||
537 | ret = gen_split_hash_key(ctx, key, keylen); | |
538 | if (ret) | |
539 | goto badkey; | |
540 | ||
541 | ctx->key_dma = dma_map_single(jrdev, ctx->key, ctx->split_key_pad_len, | |
542 | DMA_TO_DEVICE); | |
543 | if (dma_mapping_error(jrdev, ctx->key_dma)) { | |
544 | dev_err(jrdev, "unable to map key i/o memory\n"); | |
545 | return -ENOMEM; | |
546 | } | |
547 | #ifdef DEBUG | |
514df281 | 548 | print_hex_dump(KERN_ERR, "ctx.key@"__stringify(__LINE__)": ", |
045e3678 YK |
549 | DUMP_PREFIX_ADDRESS, 16, 4, ctx->key, |
550 | ctx->split_key_pad_len, 1); | |
551 | #endif | |
552 | ||
553 | ret = ahash_set_sh_desc(ahash); | |
554 | if (ret) { | |
555 | dma_unmap_single(jrdev, ctx->key_dma, ctx->split_key_pad_len, | |
556 | DMA_TO_DEVICE); | |
557 | } | |
558 | ||
559 | kfree(hashed_key); | |
560 | return ret; | |
561 | badkey: | |
562 | kfree(hashed_key); | |
563 | crypto_ahash_set_flags(ahash, CRYPTO_TFM_RES_BAD_KEY_LEN); | |
564 | return -EINVAL; | |
565 | } | |
566 | ||
567 | /* | |
568 | * ahash_edesc - s/w-extended ahash descriptor | |
569 | * @dst_dma: physical mapped address of req->result | |
570 | * @sec4_sg_dma: physical mapped address of h/w link table | |
643b39b0 | 571 | * @chained: if source is chained |
045e3678 YK |
572 | * @src_nents: number of segments in input scatterlist |
573 | * @sec4_sg_bytes: length of dma mapped sec4_sg space | |
574 | * @sec4_sg: pointer to h/w link table | |
575 | * @hw_desc: the h/w job descriptor followed by any referenced link tables | |
576 | */ | |
577 | struct ahash_edesc { | |
578 | dma_addr_t dst_dma; | |
579 | dma_addr_t sec4_sg_dma; | |
643b39b0 | 580 | bool chained; |
045e3678 YK |
581 | int src_nents; |
582 | int sec4_sg_bytes; | |
583 | struct sec4_sg_entry *sec4_sg; | |
584 | u32 hw_desc[0]; | |
585 | }; | |
586 | ||
587 | static inline void ahash_unmap(struct device *dev, | |
588 | struct ahash_edesc *edesc, | |
589 | struct ahash_request *req, int dst_len) | |
590 | { | |
591 | if (edesc->src_nents) | |
643b39b0 YK |
592 | dma_unmap_sg_chained(dev, req->src, edesc->src_nents, |
593 | DMA_TO_DEVICE, edesc->chained); | |
045e3678 YK |
594 | if (edesc->dst_dma) |
595 | dma_unmap_single(dev, edesc->dst_dma, dst_len, DMA_FROM_DEVICE); | |
596 | ||
597 | if (edesc->sec4_sg_bytes) | |
598 | dma_unmap_single(dev, edesc->sec4_sg_dma, | |
599 | edesc->sec4_sg_bytes, DMA_TO_DEVICE); | |
600 | } | |
601 | ||
602 | static inline void ahash_unmap_ctx(struct device *dev, | |
603 | struct ahash_edesc *edesc, | |
604 | struct ahash_request *req, int dst_len, u32 flag) | |
605 | { | |
606 | struct crypto_ahash *ahash = crypto_ahash_reqtfm(req); | |
607 | struct caam_hash_ctx *ctx = crypto_ahash_ctx(ahash); | |
608 | struct caam_hash_state *state = ahash_request_ctx(req); | |
609 | ||
610 | if (state->ctx_dma) | |
611 | dma_unmap_single(dev, state->ctx_dma, ctx->ctx_len, flag); | |
612 | ahash_unmap(dev, edesc, req, dst_len); | |
613 | } | |
614 | ||
615 | static void ahash_done(struct device *jrdev, u32 *desc, u32 err, | |
616 | void *context) | |
617 | { | |
618 | struct ahash_request *req = context; | |
619 | struct ahash_edesc *edesc; | |
620 | struct crypto_ahash *ahash = crypto_ahash_reqtfm(req); | |
621 | int digestsize = crypto_ahash_digestsize(ahash); | |
622 | #ifdef DEBUG | |
623 | struct caam_hash_ctx *ctx = crypto_ahash_ctx(ahash); | |
624 | struct caam_hash_state *state = ahash_request_ctx(req); | |
625 | ||
626 | dev_err(jrdev, "%s %d: err 0x%x\n", __func__, __LINE__, err); | |
627 | #endif | |
628 | ||
629 | edesc = (struct ahash_edesc *)((char *)desc - | |
630 | offsetof(struct ahash_edesc, hw_desc)); | |
631 | if (err) { | |
632 | char tmp[CAAM_ERROR_STR_MAX]; | |
633 | ||
634 | dev_err(jrdev, "%08x: %s\n", err, caam_jr_strstatus(tmp, err)); | |
635 | } | |
636 | ||
637 | ahash_unmap(jrdev, edesc, req, digestsize); | |
638 | kfree(edesc); | |
639 | ||
640 | #ifdef DEBUG | |
514df281 | 641 | print_hex_dump(KERN_ERR, "ctx@"__stringify(__LINE__)": ", |
045e3678 YK |
642 | DUMP_PREFIX_ADDRESS, 16, 4, state->caam_ctx, |
643 | ctx->ctx_len, 1); | |
644 | if (req->result) | |
514df281 | 645 | print_hex_dump(KERN_ERR, "result@"__stringify(__LINE__)": ", |
045e3678 YK |
646 | DUMP_PREFIX_ADDRESS, 16, 4, req->result, |
647 | digestsize, 1); | |
648 | #endif | |
649 | ||
650 | req->base.complete(&req->base, err); | |
651 | } | |
652 | ||
653 | static void ahash_done_bi(struct device *jrdev, u32 *desc, u32 err, | |
654 | void *context) | |
655 | { | |
656 | struct ahash_request *req = context; | |
657 | struct ahash_edesc *edesc; | |
658 | struct crypto_ahash *ahash = crypto_ahash_reqtfm(req); | |
659 | struct caam_hash_ctx *ctx = crypto_ahash_ctx(ahash); | |
660 | #ifdef DEBUG | |
661 | struct caam_hash_state *state = ahash_request_ctx(req); | |
662 | int digestsize = crypto_ahash_digestsize(ahash); | |
663 | ||
664 | dev_err(jrdev, "%s %d: err 0x%x\n", __func__, __LINE__, err); | |
665 | #endif | |
666 | ||
667 | edesc = (struct ahash_edesc *)((char *)desc - | |
668 | offsetof(struct ahash_edesc, hw_desc)); | |
669 | if (err) { | |
670 | char tmp[CAAM_ERROR_STR_MAX]; | |
671 | ||
672 | dev_err(jrdev, "%08x: %s\n", err, caam_jr_strstatus(tmp, err)); | |
673 | } | |
674 | ||
675 | ahash_unmap_ctx(jrdev, edesc, req, ctx->ctx_len, DMA_BIDIRECTIONAL); | |
676 | kfree(edesc); | |
677 | ||
678 | #ifdef DEBUG | |
514df281 | 679 | print_hex_dump(KERN_ERR, "ctx@"__stringify(__LINE__)": ", |
045e3678 YK |
680 | DUMP_PREFIX_ADDRESS, 16, 4, state->caam_ctx, |
681 | ctx->ctx_len, 1); | |
682 | if (req->result) | |
514df281 | 683 | print_hex_dump(KERN_ERR, "result@"__stringify(__LINE__)": ", |
045e3678 YK |
684 | DUMP_PREFIX_ADDRESS, 16, 4, req->result, |
685 | digestsize, 1); | |
686 | #endif | |
687 | ||
688 | req->base.complete(&req->base, err); | |
689 | } | |
690 | ||
691 | static void ahash_done_ctx_src(struct device *jrdev, u32 *desc, u32 err, | |
692 | void *context) | |
693 | { | |
694 | struct ahash_request *req = context; | |
695 | struct ahash_edesc *edesc; | |
696 | struct crypto_ahash *ahash = crypto_ahash_reqtfm(req); | |
697 | int digestsize = crypto_ahash_digestsize(ahash); | |
698 | #ifdef DEBUG | |
699 | struct caam_hash_ctx *ctx = crypto_ahash_ctx(ahash); | |
700 | struct caam_hash_state *state = ahash_request_ctx(req); | |
701 | ||
702 | dev_err(jrdev, "%s %d: err 0x%x\n", __func__, __LINE__, err); | |
703 | #endif | |
704 | ||
705 | edesc = (struct ahash_edesc *)((char *)desc - | |
706 | offsetof(struct ahash_edesc, hw_desc)); | |
707 | if (err) { | |
708 | char tmp[CAAM_ERROR_STR_MAX]; | |
709 | ||
710 | dev_err(jrdev, "%08x: %s\n", err, caam_jr_strstatus(tmp, err)); | |
711 | } | |
712 | ||
713 | ahash_unmap_ctx(jrdev, edesc, req, digestsize, DMA_FROM_DEVICE); | |
714 | kfree(edesc); | |
715 | ||
716 | #ifdef DEBUG | |
514df281 | 717 | print_hex_dump(KERN_ERR, "ctx@"__stringify(__LINE__)": ", |
045e3678 YK |
718 | DUMP_PREFIX_ADDRESS, 16, 4, state->caam_ctx, |
719 | ctx->ctx_len, 1); | |
720 | if (req->result) | |
514df281 | 721 | print_hex_dump(KERN_ERR, "result@"__stringify(__LINE__)": ", |
045e3678 YK |
722 | DUMP_PREFIX_ADDRESS, 16, 4, req->result, |
723 | digestsize, 1); | |
724 | #endif | |
725 | ||
726 | req->base.complete(&req->base, err); | |
727 | } | |
728 | ||
729 | static void ahash_done_ctx_dst(struct device *jrdev, u32 *desc, u32 err, | |
730 | void *context) | |
731 | { | |
732 | struct ahash_request *req = context; | |
733 | struct ahash_edesc *edesc; | |
734 | struct crypto_ahash *ahash = crypto_ahash_reqtfm(req); | |
735 | struct caam_hash_ctx *ctx = crypto_ahash_ctx(ahash); | |
736 | #ifdef DEBUG | |
737 | struct caam_hash_state *state = ahash_request_ctx(req); | |
738 | int digestsize = crypto_ahash_digestsize(ahash); | |
739 | ||
740 | dev_err(jrdev, "%s %d: err 0x%x\n", __func__, __LINE__, err); | |
741 | #endif | |
742 | ||
743 | edesc = (struct ahash_edesc *)((char *)desc - | |
744 | offsetof(struct ahash_edesc, hw_desc)); | |
745 | if (err) { | |
746 | char tmp[CAAM_ERROR_STR_MAX]; | |
747 | ||
748 | dev_err(jrdev, "%08x: %s\n", err, caam_jr_strstatus(tmp, err)); | |
749 | } | |
750 | ||
751 | ahash_unmap_ctx(jrdev, edesc, req, ctx->ctx_len, DMA_TO_DEVICE); | |
752 | kfree(edesc); | |
753 | ||
754 | #ifdef DEBUG | |
514df281 | 755 | print_hex_dump(KERN_ERR, "ctx@"__stringify(__LINE__)": ", |
045e3678 YK |
756 | DUMP_PREFIX_ADDRESS, 16, 4, state->caam_ctx, |
757 | ctx->ctx_len, 1); | |
758 | if (req->result) | |
514df281 | 759 | print_hex_dump(KERN_ERR, "result@"__stringify(__LINE__)": ", |
045e3678 YK |
760 | DUMP_PREFIX_ADDRESS, 16, 4, req->result, |
761 | digestsize, 1); | |
762 | #endif | |
763 | ||
764 | req->base.complete(&req->base, err); | |
765 | } | |
766 | ||
767 | /* submit update job descriptor */ | |
768 | static int ahash_update_ctx(struct ahash_request *req) | |
769 | { | |
770 | struct crypto_ahash *ahash = crypto_ahash_reqtfm(req); | |
771 | struct caam_hash_ctx *ctx = crypto_ahash_ctx(ahash); | |
772 | struct caam_hash_state *state = ahash_request_ctx(req); | |
773 | struct device *jrdev = ctx->jrdev; | |
774 | gfp_t flags = (req->base.flags & (CRYPTO_TFM_REQ_MAY_BACKLOG | | |
775 | CRYPTO_TFM_REQ_MAY_SLEEP)) ? GFP_KERNEL : GFP_ATOMIC; | |
776 | u8 *buf = state->current_buf ? state->buf_1 : state->buf_0; | |
777 | int *buflen = state->current_buf ? &state->buflen_1 : &state->buflen_0; | |
778 | u8 *next_buf = state->current_buf ? state->buf_0 : state->buf_1; | |
779 | int *next_buflen = state->current_buf ? &state->buflen_0 : | |
780 | &state->buflen_1, last_buflen; | |
781 | int in_len = *buflen + req->nbytes, to_hash; | |
782 | u32 *sh_desc = ctx->sh_desc_update, *desc; | |
783 | dma_addr_t ptr = ctx->sh_desc_update_dma; | |
784 | int src_nents, sec4_sg_bytes, sec4_sg_src_index; | |
785 | struct ahash_edesc *edesc; | |
643b39b0 | 786 | bool chained = false; |
045e3678 YK |
787 | int ret = 0; |
788 | int sh_len; | |
789 | ||
790 | last_buflen = *next_buflen; | |
791 | *next_buflen = in_len & (crypto_tfm_alg_blocksize(&ahash->base) - 1); | |
792 | to_hash = in_len - *next_buflen; | |
793 | ||
794 | if (to_hash) { | |
643b39b0 YK |
795 | src_nents = __sg_count(req->src, req->nbytes - (*next_buflen), |
796 | &chained); | |
045e3678 YK |
797 | sec4_sg_src_index = 1 + (*buflen ? 1 : 0); |
798 | sec4_sg_bytes = (sec4_sg_src_index + src_nents) * | |
799 | sizeof(struct sec4_sg_entry); | |
800 | ||
801 | /* | |
802 | * allocate space for base edesc and hw desc commands, | |
803 | * link tables | |
804 | */ | |
805 | edesc = kmalloc(sizeof(struct ahash_edesc) + DESC_JOB_IO_LEN + | |
806 | sec4_sg_bytes, GFP_DMA | flags); | |
807 | if (!edesc) { | |
808 | dev_err(jrdev, | |
809 | "could not allocate extended descriptor\n"); | |
810 | return -ENOMEM; | |
811 | } | |
812 | ||
813 | edesc->src_nents = src_nents; | |
643b39b0 | 814 | edesc->chained = chained; |
045e3678 YK |
815 | edesc->sec4_sg_bytes = sec4_sg_bytes; |
816 | edesc->sec4_sg = (void *)edesc + sizeof(struct ahash_edesc) + | |
817 | DESC_JOB_IO_LEN; | |
818 | edesc->sec4_sg_dma = dma_map_single(jrdev, edesc->sec4_sg, | |
819 | sec4_sg_bytes, | |
820 | DMA_TO_DEVICE); | |
821 | ||
822 | ctx_map_to_sec4_sg(desc, jrdev, state, ctx->ctx_len, | |
823 | edesc->sec4_sg, DMA_BIDIRECTIONAL); | |
824 | ||
825 | state->buf_dma = try_buf_map_to_sec4_sg(jrdev, | |
826 | edesc->sec4_sg + 1, | |
827 | buf, state->buf_dma, | |
828 | *buflen, last_buflen); | |
829 | ||
830 | if (src_nents) { | |
831 | src_map_to_sec4_sg(jrdev, req->src, src_nents, | |
643b39b0 YK |
832 | edesc->sec4_sg + sec4_sg_src_index, |
833 | chained); | |
045e3678 YK |
834 | if (*next_buflen) { |
835 | sg_copy_part(next_buf, req->src, to_hash - | |
836 | *buflen, req->nbytes); | |
837 | state->current_buf = !state->current_buf; | |
838 | } | |
839 | } else { | |
840 | (edesc->sec4_sg + sec4_sg_src_index - 1)->len |= | |
841 | SEC4_SG_LEN_FIN; | |
842 | } | |
843 | ||
844 | sh_len = desc_len(sh_desc); | |
845 | desc = edesc->hw_desc; | |
846 | init_job_desc_shared(desc, ptr, sh_len, HDR_SHARE_DEFER | | |
847 | HDR_REVERSE); | |
848 | ||
849 | append_seq_in_ptr(desc, edesc->sec4_sg_dma, ctx->ctx_len + | |
850 | to_hash, LDST_SGF); | |
851 | ||
852 | append_seq_out_ptr(desc, state->ctx_dma, ctx->ctx_len, 0); | |
853 | ||
854 | #ifdef DEBUG | |
514df281 | 855 | print_hex_dump(KERN_ERR, "jobdesc@"__stringify(__LINE__)": ", |
045e3678 YK |
856 | DUMP_PREFIX_ADDRESS, 16, 4, desc, |
857 | desc_bytes(desc), 1); | |
858 | #endif | |
859 | ||
860 | ret = caam_jr_enqueue(jrdev, desc, ahash_done_bi, req); | |
861 | if (!ret) { | |
862 | ret = -EINPROGRESS; | |
863 | } else { | |
864 | ahash_unmap_ctx(jrdev, edesc, req, ctx->ctx_len, | |
865 | DMA_BIDIRECTIONAL); | |
866 | kfree(edesc); | |
867 | } | |
868 | } else if (*next_buflen) { | |
869 | sg_copy(buf + *buflen, req->src, req->nbytes); | |
870 | *buflen = *next_buflen; | |
871 | *next_buflen = last_buflen; | |
872 | } | |
873 | #ifdef DEBUG | |
514df281 | 874 | print_hex_dump(KERN_ERR, "buf@"__stringify(__LINE__)": ", |
045e3678 | 875 | DUMP_PREFIX_ADDRESS, 16, 4, buf, *buflen, 1); |
514df281 | 876 | print_hex_dump(KERN_ERR, "next buf@"__stringify(__LINE__)": ", |
045e3678 YK |
877 | DUMP_PREFIX_ADDRESS, 16, 4, next_buf, |
878 | *next_buflen, 1); | |
879 | #endif | |
880 | ||
881 | return ret; | |
882 | } | |
883 | ||
884 | static int ahash_final_ctx(struct ahash_request *req) | |
885 | { | |
886 | struct crypto_ahash *ahash = crypto_ahash_reqtfm(req); | |
887 | struct caam_hash_ctx *ctx = crypto_ahash_ctx(ahash); | |
888 | struct caam_hash_state *state = ahash_request_ctx(req); | |
889 | struct device *jrdev = ctx->jrdev; | |
890 | gfp_t flags = (req->base.flags & (CRYPTO_TFM_REQ_MAY_BACKLOG | | |
891 | CRYPTO_TFM_REQ_MAY_SLEEP)) ? GFP_KERNEL : GFP_ATOMIC; | |
892 | u8 *buf = state->current_buf ? state->buf_1 : state->buf_0; | |
893 | int buflen = state->current_buf ? state->buflen_1 : state->buflen_0; | |
894 | int last_buflen = state->current_buf ? state->buflen_0 : | |
895 | state->buflen_1; | |
896 | u32 *sh_desc = ctx->sh_desc_fin, *desc; | |
897 | dma_addr_t ptr = ctx->sh_desc_fin_dma; | |
898 | int sec4_sg_bytes; | |
899 | int digestsize = crypto_ahash_digestsize(ahash); | |
900 | struct ahash_edesc *edesc; | |
901 | int ret = 0; | |
902 | int sh_len; | |
903 | ||
904 | sec4_sg_bytes = (1 + (buflen ? 1 : 0)) * sizeof(struct sec4_sg_entry); | |
905 | ||
906 | /* allocate space for base edesc and hw desc commands, link tables */ | |
907 | edesc = kmalloc(sizeof(struct ahash_edesc) + DESC_JOB_IO_LEN + | |
908 | sec4_sg_bytes, GFP_DMA | flags); | |
909 | if (!edesc) { | |
910 | dev_err(jrdev, "could not allocate extended descriptor\n"); | |
911 | return -ENOMEM; | |
912 | } | |
913 | ||
914 | sh_len = desc_len(sh_desc); | |
915 | desc = edesc->hw_desc; | |
916 | init_job_desc_shared(desc, ptr, sh_len, HDR_SHARE_DEFER | HDR_REVERSE); | |
917 | ||
918 | edesc->sec4_sg_bytes = sec4_sg_bytes; | |
919 | edesc->sec4_sg = (void *)edesc + sizeof(struct ahash_edesc) + | |
920 | DESC_JOB_IO_LEN; | |
921 | edesc->sec4_sg_dma = dma_map_single(jrdev, edesc->sec4_sg, | |
922 | sec4_sg_bytes, DMA_TO_DEVICE); | |
923 | edesc->src_nents = 0; | |
924 | ||
925 | ctx_map_to_sec4_sg(desc, jrdev, state, ctx->ctx_len, edesc->sec4_sg, | |
926 | DMA_TO_DEVICE); | |
927 | ||
928 | state->buf_dma = try_buf_map_to_sec4_sg(jrdev, edesc->sec4_sg + 1, | |
929 | buf, state->buf_dma, buflen, | |
930 | last_buflen); | |
931 | (edesc->sec4_sg + sec4_sg_bytes - 1)->len |= SEC4_SG_LEN_FIN; | |
932 | ||
933 | append_seq_in_ptr(desc, edesc->sec4_sg_dma, ctx->ctx_len + buflen, | |
934 | LDST_SGF); | |
935 | ||
936 | edesc->dst_dma = map_seq_out_ptr_result(desc, jrdev, req->result, | |
937 | digestsize); | |
938 | ||
939 | #ifdef DEBUG | |
514df281 | 940 | print_hex_dump(KERN_ERR, "jobdesc@"__stringify(__LINE__)": ", |
045e3678 YK |
941 | DUMP_PREFIX_ADDRESS, 16, 4, desc, desc_bytes(desc), 1); |
942 | #endif | |
943 | ||
944 | ret = caam_jr_enqueue(jrdev, desc, ahash_done_ctx_src, req); | |
945 | if (!ret) { | |
946 | ret = -EINPROGRESS; | |
947 | } else { | |
948 | ahash_unmap_ctx(jrdev, edesc, req, digestsize, DMA_FROM_DEVICE); | |
949 | kfree(edesc); | |
950 | } | |
951 | ||
952 | return ret; | |
953 | } | |
954 | ||
955 | static int ahash_finup_ctx(struct ahash_request *req) | |
956 | { | |
957 | struct crypto_ahash *ahash = crypto_ahash_reqtfm(req); | |
958 | struct caam_hash_ctx *ctx = crypto_ahash_ctx(ahash); | |
959 | struct caam_hash_state *state = ahash_request_ctx(req); | |
960 | struct device *jrdev = ctx->jrdev; | |
961 | gfp_t flags = (req->base.flags & (CRYPTO_TFM_REQ_MAY_BACKLOG | | |
962 | CRYPTO_TFM_REQ_MAY_SLEEP)) ? GFP_KERNEL : GFP_ATOMIC; | |
963 | u8 *buf = state->current_buf ? state->buf_1 : state->buf_0; | |
964 | int buflen = state->current_buf ? state->buflen_1 : state->buflen_0; | |
965 | int last_buflen = state->current_buf ? state->buflen_0 : | |
966 | state->buflen_1; | |
967 | u32 *sh_desc = ctx->sh_desc_finup, *desc; | |
968 | dma_addr_t ptr = ctx->sh_desc_finup_dma; | |
969 | int sec4_sg_bytes, sec4_sg_src_index; | |
970 | int src_nents; | |
971 | int digestsize = crypto_ahash_digestsize(ahash); | |
972 | struct ahash_edesc *edesc; | |
643b39b0 | 973 | bool chained = false; |
045e3678 YK |
974 | int ret = 0; |
975 | int sh_len; | |
976 | ||
643b39b0 | 977 | src_nents = __sg_count(req->src, req->nbytes, &chained); |
045e3678 YK |
978 | sec4_sg_src_index = 1 + (buflen ? 1 : 0); |
979 | sec4_sg_bytes = (sec4_sg_src_index + src_nents) * | |
980 | sizeof(struct sec4_sg_entry); | |
981 | ||
982 | /* allocate space for base edesc and hw desc commands, link tables */ | |
983 | edesc = kmalloc(sizeof(struct ahash_edesc) + DESC_JOB_IO_LEN + | |
984 | sec4_sg_bytes, GFP_DMA | flags); | |
985 | if (!edesc) { | |
986 | dev_err(jrdev, "could not allocate extended descriptor\n"); | |
987 | return -ENOMEM; | |
988 | } | |
989 | ||
990 | sh_len = desc_len(sh_desc); | |
991 | desc = edesc->hw_desc; | |
992 | init_job_desc_shared(desc, ptr, sh_len, HDR_SHARE_DEFER | HDR_REVERSE); | |
993 | ||
994 | edesc->src_nents = src_nents; | |
643b39b0 | 995 | edesc->chained = chained; |
045e3678 YK |
996 | edesc->sec4_sg_bytes = sec4_sg_bytes; |
997 | edesc->sec4_sg = (void *)edesc + sizeof(struct ahash_edesc) + | |
998 | DESC_JOB_IO_LEN; | |
999 | edesc->sec4_sg_dma = dma_map_single(jrdev, edesc->sec4_sg, | |
1000 | sec4_sg_bytes, DMA_TO_DEVICE); | |
1001 | ||
1002 | ctx_map_to_sec4_sg(desc, jrdev, state, ctx->ctx_len, edesc->sec4_sg, | |
1003 | DMA_TO_DEVICE); | |
1004 | ||
1005 | state->buf_dma = try_buf_map_to_sec4_sg(jrdev, edesc->sec4_sg + 1, | |
1006 | buf, state->buf_dma, buflen, | |
1007 | last_buflen); | |
1008 | ||
1009 | src_map_to_sec4_sg(jrdev, req->src, src_nents, edesc->sec4_sg + | |
643b39b0 | 1010 | sec4_sg_src_index, chained); |
045e3678 YK |
1011 | |
1012 | append_seq_in_ptr(desc, edesc->sec4_sg_dma, ctx->ctx_len + | |
1013 | buflen + req->nbytes, LDST_SGF); | |
1014 | ||
1015 | edesc->dst_dma = map_seq_out_ptr_result(desc, jrdev, req->result, | |
1016 | digestsize); | |
1017 | ||
1018 | #ifdef DEBUG | |
514df281 | 1019 | print_hex_dump(KERN_ERR, "jobdesc@"__stringify(__LINE__)": ", |
045e3678 YK |
1020 | DUMP_PREFIX_ADDRESS, 16, 4, desc, desc_bytes(desc), 1); |
1021 | #endif | |
1022 | ||
1023 | ret = caam_jr_enqueue(jrdev, desc, ahash_done_ctx_src, req); | |
1024 | if (!ret) { | |
1025 | ret = -EINPROGRESS; | |
1026 | } else { | |
1027 | ahash_unmap_ctx(jrdev, edesc, req, digestsize, DMA_FROM_DEVICE); | |
1028 | kfree(edesc); | |
1029 | } | |
1030 | ||
1031 | return ret; | |
1032 | } | |
1033 | ||
1034 | static int ahash_digest(struct ahash_request *req) | |
1035 | { | |
1036 | struct crypto_ahash *ahash = crypto_ahash_reqtfm(req); | |
1037 | struct caam_hash_ctx *ctx = crypto_ahash_ctx(ahash); | |
1038 | struct device *jrdev = ctx->jrdev; | |
1039 | gfp_t flags = (req->base.flags & (CRYPTO_TFM_REQ_MAY_BACKLOG | | |
1040 | CRYPTO_TFM_REQ_MAY_SLEEP)) ? GFP_KERNEL : GFP_ATOMIC; | |
1041 | u32 *sh_desc = ctx->sh_desc_digest, *desc; | |
1042 | dma_addr_t ptr = ctx->sh_desc_digest_dma; | |
1043 | int digestsize = crypto_ahash_digestsize(ahash); | |
1044 | int src_nents, sec4_sg_bytes; | |
1045 | dma_addr_t src_dma; | |
1046 | struct ahash_edesc *edesc; | |
643b39b0 | 1047 | bool chained = false; |
045e3678 YK |
1048 | int ret = 0; |
1049 | u32 options; | |
1050 | int sh_len; | |
1051 | ||
643b39b0 YK |
1052 | src_nents = sg_count(req->src, req->nbytes, &chained); |
1053 | dma_map_sg_chained(jrdev, req->src, src_nents ? : 1, DMA_TO_DEVICE, | |
1054 | chained); | |
045e3678 YK |
1055 | sec4_sg_bytes = src_nents * sizeof(struct sec4_sg_entry); |
1056 | ||
1057 | /* allocate space for base edesc and hw desc commands, link tables */ | |
1058 | edesc = kmalloc(sizeof(struct ahash_edesc) + sec4_sg_bytes + | |
1059 | DESC_JOB_IO_LEN, GFP_DMA | flags); | |
1060 | if (!edesc) { | |
1061 | dev_err(jrdev, "could not allocate extended descriptor\n"); | |
1062 | return -ENOMEM; | |
1063 | } | |
1064 | edesc->sec4_sg = (void *)edesc + sizeof(struct ahash_edesc) + | |
1065 | DESC_JOB_IO_LEN; | |
1066 | edesc->sec4_sg_dma = dma_map_single(jrdev, edesc->sec4_sg, | |
1067 | sec4_sg_bytes, DMA_TO_DEVICE); | |
1068 | edesc->src_nents = src_nents; | |
643b39b0 | 1069 | edesc->chained = chained; |
045e3678 YK |
1070 | |
1071 | sh_len = desc_len(sh_desc); | |
1072 | desc = edesc->hw_desc; | |
1073 | init_job_desc_shared(desc, ptr, sh_len, HDR_SHARE_DEFER | HDR_REVERSE); | |
1074 | ||
1075 | if (src_nents) { | |
1076 | sg_to_sec4_sg_last(req->src, src_nents, edesc->sec4_sg, 0); | |
1077 | src_dma = edesc->sec4_sg_dma; | |
1078 | options = LDST_SGF; | |
1079 | } else { | |
1080 | src_dma = sg_dma_address(req->src); | |
1081 | options = 0; | |
1082 | } | |
1083 | append_seq_in_ptr(desc, src_dma, req->nbytes, options); | |
1084 | ||
1085 | edesc->dst_dma = map_seq_out_ptr_result(desc, jrdev, req->result, | |
1086 | digestsize); | |
1087 | ||
1088 | #ifdef DEBUG | |
514df281 | 1089 | print_hex_dump(KERN_ERR, "jobdesc@"__stringify(__LINE__)": ", |
045e3678 YK |
1090 | DUMP_PREFIX_ADDRESS, 16, 4, desc, desc_bytes(desc), 1); |
1091 | #endif | |
1092 | ||
1093 | ret = caam_jr_enqueue(jrdev, desc, ahash_done, req); | |
1094 | if (!ret) { | |
1095 | ret = -EINPROGRESS; | |
1096 | } else { | |
1097 | ahash_unmap(jrdev, edesc, req, digestsize); | |
1098 | kfree(edesc); | |
1099 | } | |
1100 | ||
1101 | return ret; | |
1102 | } | |
1103 | ||
1104 | /* submit ahash final if it the first job descriptor */ | |
1105 | static int ahash_final_no_ctx(struct ahash_request *req) | |
1106 | { | |
1107 | struct crypto_ahash *ahash = crypto_ahash_reqtfm(req); | |
1108 | struct caam_hash_ctx *ctx = crypto_ahash_ctx(ahash); | |
1109 | struct caam_hash_state *state = ahash_request_ctx(req); | |
1110 | struct device *jrdev = ctx->jrdev; | |
1111 | gfp_t flags = (req->base.flags & (CRYPTO_TFM_REQ_MAY_BACKLOG | | |
1112 | CRYPTO_TFM_REQ_MAY_SLEEP)) ? GFP_KERNEL : GFP_ATOMIC; | |
1113 | u8 *buf = state->current_buf ? state->buf_1 : state->buf_0; | |
1114 | int buflen = state->current_buf ? state->buflen_1 : state->buflen_0; | |
1115 | u32 *sh_desc = ctx->sh_desc_digest, *desc; | |
1116 | dma_addr_t ptr = ctx->sh_desc_digest_dma; | |
1117 | int digestsize = crypto_ahash_digestsize(ahash); | |
1118 | struct ahash_edesc *edesc; | |
1119 | int ret = 0; | |
1120 | int sh_len; | |
1121 | ||
1122 | /* allocate space for base edesc and hw desc commands, link tables */ | |
1123 | edesc = kmalloc(sizeof(struct ahash_edesc) + DESC_JOB_IO_LEN, | |
1124 | GFP_DMA | flags); | |
1125 | if (!edesc) { | |
1126 | dev_err(jrdev, "could not allocate extended descriptor\n"); | |
1127 | return -ENOMEM; | |
1128 | } | |
1129 | ||
1130 | sh_len = desc_len(sh_desc); | |
1131 | desc = edesc->hw_desc; | |
1132 | init_job_desc_shared(desc, ptr, sh_len, HDR_SHARE_DEFER | HDR_REVERSE); | |
1133 | ||
1134 | state->buf_dma = dma_map_single(jrdev, buf, buflen, DMA_TO_DEVICE); | |
1135 | ||
1136 | append_seq_in_ptr(desc, state->buf_dma, buflen, 0); | |
1137 | ||
1138 | edesc->dst_dma = map_seq_out_ptr_result(desc, jrdev, req->result, | |
1139 | digestsize); | |
1140 | edesc->src_nents = 0; | |
1141 | ||
1142 | #ifdef DEBUG | |
514df281 | 1143 | print_hex_dump(KERN_ERR, "jobdesc@"__stringify(__LINE__)": ", |
045e3678 YK |
1144 | DUMP_PREFIX_ADDRESS, 16, 4, desc, desc_bytes(desc), 1); |
1145 | #endif | |
1146 | ||
1147 | ret = caam_jr_enqueue(jrdev, desc, ahash_done, req); | |
1148 | if (!ret) { | |
1149 | ret = -EINPROGRESS; | |
1150 | } else { | |
1151 | ahash_unmap(jrdev, edesc, req, digestsize); | |
1152 | kfree(edesc); | |
1153 | } | |
1154 | ||
1155 | return ret; | |
1156 | } | |
1157 | ||
1158 | /* submit ahash update if it the first job descriptor after update */ | |
1159 | static int ahash_update_no_ctx(struct ahash_request *req) | |
1160 | { | |
1161 | struct crypto_ahash *ahash = crypto_ahash_reqtfm(req); | |
1162 | struct caam_hash_ctx *ctx = crypto_ahash_ctx(ahash); | |
1163 | struct caam_hash_state *state = ahash_request_ctx(req); | |
1164 | struct device *jrdev = ctx->jrdev; | |
1165 | gfp_t flags = (req->base.flags & (CRYPTO_TFM_REQ_MAY_BACKLOG | | |
1166 | CRYPTO_TFM_REQ_MAY_SLEEP)) ? GFP_KERNEL : GFP_ATOMIC; | |
1167 | u8 *buf = state->current_buf ? state->buf_1 : state->buf_0; | |
1168 | int *buflen = state->current_buf ? &state->buflen_1 : &state->buflen_0; | |
1169 | u8 *next_buf = state->current_buf ? state->buf_0 : state->buf_1; | |
1170 | int *next_buflen = state->current_buf ? &state->buflen_0 : | |
1171 | &state->buflen_1; | |
1172 | int in_len = *buflen + req->nbytes, to_hash; | |
1173 | int sec4_sg_bytes, src_nents; | |
1174 | struct ahash_edesc *edesc; | |
1175 | u32 *desc, *sh_desc = ctx->sh_desc_update_first; | |
1176 | dma_addr_t ptr = ctx->sh_desc_update_first_dma; | |
643b39b0 | 1177 | bool chained = false; |
045e3678 YK |
1178 | int ret = 0; |
1179 | int sh_len; | |
1180 | ||
1181 | *next_buflen = in_len & (crypto_tfm_alg_blocksize(&ahash->base) - 1); | |
1182 | to_hash = in_len - *next_buflen; | |
1183 | ||
1184 | if (to_hash) { | |
643b39b0 YK |
1185 | src_nents = __sg_count(req->src, req->nbytes - (*next_buflen), |
1186 | &chained); | |
045e3678 YK |
1187 | sec4_sg_bytes = (1 + src_nents) * |
1188 | sizeof(struct sec4_sg_entry); | |
1189 | ||
1190 | /* | |
1191 | * allocate space for base edesc and hw desc commands, | |
1192 | * link tables | |
1193 | */ | |
1194 | edesc = kmalloc(sizeof(struct ahash_edesc) + DESC_JOB_IO_LEN + | |
1195 | sec4_sg_bytes, GFP_DMA | flags); | |
1196 | if (!edesc) { | |
1197 | dev_err(jrdev, | |
1198 | "could not allocate extended descriptor\n"); | |
1199 | return -ENOMEM; | |
1200 | } | |
1201 | ||
1202 | edesc->src_nents = src_nents; | |
643b39b0 | 1203 | edesc->chained = chained; |
045e3678 YK |
1204 | edesc->sec4_sg_bytes = sec4_sg_bytes; |
1205 | edesc->sec4_sg = (void *)edesc + sizeof(struct ahash_edesc) + | |
1206 | DESC_JOB_IO_LEN; | |
1207 | edesc->sec4_sg_dma = dma_map_single(jrdev, edesc->sec4_sg, | |
1208 | sec4_sg_bytes, | |
1209 | DMA_TO_DEVICE); | |
1210 | ||
1211 | state->buf_dma = buf_map_to_sec4_sg(jrdev, edesc->sec4_sg, | |
1212 | buf, *buflen); | |
1213 | src_map_to_sec4_sg(jrdev, req->src, src_nents, | |
643b39b0 | 1214 | edesc->sec4_sg + 1, chained); |
045e3678 YK |
1215 | if (*next_buflen) { |
1216 | sg_copy_part(next_buf, req->src, to_hash - *buflen, | |
1217 | req->nbytes); | |
1218 | state->current_buf = !state->current_buf; | |
1219 | } | |
1220 | ||
1221 | sh_len = desc_len(sh_desc); | |
1222 | desc = edesc->hw_desc; | |
1223 | init_job_desc_shared(desc, ptr, sh_len, HDR_SHARE_DEFER | | |
1224 | HDR_REVERSE); | |
1225 | ||
1226 | append_seq_in_ptr(desc, edesc->sec4_sg_dma, to_hash, LDST_SGF); | |
1227 | ||
1228 | map_seq_out_ptr_ctx(desc, jrdev, state, ctx->ctx_len); | |
1229 | ||
1230 | #ifdef DEBUG | |
514df281 | 1231 | print_hex_dump(KERN_ERR, "jobdesc@"__stringify(__LINE__)": ", |
045e3678 YK |
1232 | DUMP_PREFIX_ADDRESS, 16, 4, desc, |
1233 | desc_bytes(desc), 1); | |
1234 | #endif | |
1235 | ||
1236 | ret = caam_jr_enqueue(jrdev, desc, ahash_done_ctx_dst, req); | |
1237 | if (!ret) { | |
1238 | ret = -EINPROGRESS; | |
1239 | state->update = ahash_update_ctx; | |
1240 | state->finup = ahash_finup_ctx; | |
1241 | state->final = ahash_final_ctx; | |
1242 | } else { | |
1243 | ahash_unmap_ctx(jrdev, edesc, req, ctx->ctx_len, | |
1244 | DMA_TO_DEVICE); | |
1245 | kfree(edesc); | |
1246 | } | |
1247 | } else if (*next_buflen) { | |
1248 | sg_copy(buf + *buflen, req->src, req->nbytes); | |
1249 | *buflen = *next_buflen; | |
1250 | *next_buflen = 0; | |
1251 | } | |
1252 | #ifdef DEBUG | |
514df281 | 1253 | print_hex_dump(KERN_ERR, "buf@"__stringify(__LINE__)": ", |
045e3678 | 1254 | DUMP_PREFIX_ADDRESS, 16, 4, buf, *buflen, 1); |
514df281 | 1255 | print_hex_dump(KERN_ERR, "next buf@"__stringify(__LINE__)": ", |
045e3678 YK |
1256 | DUMP_PREFIX_ADDRESS, 16, 4, next_buf, |
1257 | *next_buflen, 1); | |
1258 | #endif | |
1259 | ||
1260 | return ret; | |
1261 | } | |
1262 | ||
1263 | /* submit ahash finup if it the first job descriptor after update */ | |
1264 | static int ahash_finup_no_ctx(struct ahash_request *req) | |
1265 | { | |
1266 | struct crypto_ahash *ahash = crypto_ahash_reqtfm(req); | |
1267 | struct caam_hash_ctx *ctx = crypto_ahash_ctx(ahash); | |
1268 | struct caam_hash_state *state = ahash_request_ctx(req); | |
1269 | struct device *jrdev = ctx->jrdev; | |
1270 | gfp_t flags = (req->base.flags & (CRYPTO_TFM_REQ_MAY_BACKLOG | | |
1271 | CRYPTO_TFM_REQ_MAY_SLEEP)) ? GFP_KERNEL : GFP_ATOMIC; | |
1272 | u8 *buf = state->current_buf ? state->buf_1 : state->buf_0; | |
1273 | int buflen = state->current_buf ? state->buflen_1 : state->buflen_0; | |
1274 | int last_buflen = state->current_buf ? state->buflen_0 : | |
1275 | state->buflen_1; | |
1276 | u32 *sh_desc = ctx->sh_desc_digest, *desc; | |
1277 | dma_addr_t ptr = ctx->sh_desc_digest_dma; | |
1278 | int sec4_sg_bytes, sec4_sg_src_index, src_nents; | |
1279 | int digestsize = crypto_ahash_digestsize(ahash); | |
1280 | struct ahash_edesc *edesc; | |
643b39b0 | 1281 | bool chained = false; |
045e3678 YK |
1282 | int sh_len; |
1283 | int ret = 0; | |
1284 | ||
643b39b0 | 1285 | src_nents = __sg_count(req->src, req->nbytes, &chained); |
045e3678 YK |
1286 | sec4_sg_src_index = 2; |
1287 | sec4_sg_bytes = (sec4_sg_src_index + src_nents) * | |
1288 | sizeof(struct sec4_sg_entry); | |
1289 | ||
1290 | /* allocate space for base edesc and hw desc commands, link tables */ | |
1291 | edesc = kmalloc(sizeof(struct ahash_edesc) + DESC_JOB_IO_LEN + | |
1292 | sec4_sg_bytes, GFP_DMA | flags); | |
1293 | if (!edesc) { | |
1294 | dev_err(jrdev, "could not allocate extended descriptor\n"); | |
1295 | return -ENOMEM; | |
1296 | } | |
1297 | ||
1298 | sh_len = desc_len(sh_desc); | |
1299 | desc = edesc->hw_desc; | |
1300 | init_job_desc_shared(desc, ptr, sh_len, HDR_SHARE_DEFER | HDR_REVERSE); | |
1301 | ||
1302 | edesc->src_nents = src_nents; | |
643b39b0 | 1303 | edesc->chained = chained; |
045e3678 YK |
1304 | edesc->sec4_sg_bytes = sec4_sg_bytes; |
1305 | edesc->sec4_sg = (void *)edesc + sizeof(struct ahash_edesc) + | |
1306 | DESC_JOB_IO_LEN; | |
1307 | edesc->sec4_sg_dma = dma_map_single(jrdev, edesc->sec4_sg, | |
1308 | sec4_sg_bytes, DMA_TO_DEVICE); | |
1309 | ||
1310 | state->buf_dma = try_buf_map_to_sec4_sg(jrdev, edesc->sec4_sg, buf, | |
1311 | state->buf_dma, buflen, | |
1312 | last_buflen); | |
1313 | ||
643b39b0 YK |
1314 | src_map_to_sec4_sg(jrdev, req->src, src_nents, edesc->sec4_sg + 1, |
1315 | chained); | |
045e3678 YK |
1316 | |
1317 | append_seq_in_ptr(desc, edesc->sec4_sg_dma, buflen + | |
1318 | req->nbytes, LDST_SGF); | |
1319 | ||
1320 | edesc->dst_dma = map_seq_out_ptr_result(desc, jrdev, req->result, | |
1321 | digestsize); | |
1322 | ||
1323 | #ifdef DEBUG | |
514df281 | 1324 | print_hex_dump(KERN_ERR, "jobdesc@"__stringify(__LINE__)": ", |
045e3678 YK |
1325 | DUMP_PREFIX_ADDRESS, 16, 4, desc, desc_bytes(desc), 1); |
1326 | #endif | |
1327 | ||
1328 | ret = caam_jr_enqueue(jrdev, desc, ahash_done, req); | |
1329 | if (!ret) { | |
1330 | ret = -EINPROGRESS; | |
1331 | } else { | |
1332 | ahash_unmap(jrdev, edesc, req, digestsize); | |
1333 | kfree(edesc); | |
1334 | } | |
1335 | ||
1336 | return ret; | |
1337 | } | |
1338 | ||
1339 | /* submit first update job descriptor after init */ | |
1340 | static int ahash_update_first(struct ahash_request *req) | |
1341 | { | |
1342 | struct crypto_ahash *ahash = crypto_ahash_reqtfm(req); | |
1343 | struct caam_hash_ctx *ctx = crypto_ahash_ctx(ahash); | |
1344 | struct caam_hash_state *state = ahash_request_ctx(req); | |
1345 | struct device *jrdev = ctx->jrdev; | |
1346 | gfp_t flags = (req->base.flags & (CRYPTO_TFM_REQ_MAY_BACKLOG | | |
1347 | CRYPTO_TFM_REQ_MAY_SLEEP)) ? GFP_KERNEL : GFP_ATOMIC; | |
1348 | u8 *next_buf = state->buf_0 + state->current_buf * | |
1349 | CAAM_MAX_HASH_BLOCK_SIZE; | |
1350 | int *next_buflen = &state->buflen_0 + state->current_buf; | |
1351 | int to_hash; | |
1352 | u32 *sh_desc = ctx->sh_desc_update_first, *desc; | |
1353 | dma_addr_t ptr = ctx->sh_desc_update_first_dma; | |
1354 | int sec4_sg_bytes, src_nents; | |
1355 | dma_addr_t src_dma; | |
1356 | u32 options; | |
1357 | struct ahash_edesc *edesc; | |
643b39b0 | 1358 | bool chained = false; |
045e3678 YK |
1359 | int ret = 0; |
1360 | int sh_len; | |
1361 | ||
1362 | *next_buflen = req->nbytes & (crypto_tfm_alg_blocksize(&ahash->base) - | |
1363 | 1); | |
1364 | to_hash = req->nbytes - *next_buflen; | |
1365 | ||
1366 | if (to_hash) { | |
643b39b0 YK |
1367 | src_nents = sg_count(req->src, req->nbytes - (*next_buflen), |
1368 | &chained); | |
1369 | dma_map_sg_chained(jrdev, req->src, src_nents ? : 1, | |
1370 | DMA_TO_DEVICE, chained); | |
045e3678 YK |
1371 | sec4_sg_bytes = src_nents * sizeof(struct sec4_sg_entry); |
1372 | ||
1373 | /* | |
1374 | * allocate space for base edesc and hw desc commands, | |
1375 | * link tables | |
1376 | */ | |
1377 | edesc = kmalloc(sizeof(struct ahash_edesc) + DESC_JOB_IO_LEN + | |
1378 | sec4_sg_bytes, GFP_DMA | flags); | |
1379 | if (!edesc) { | |
1380 | dev_err(jrdev, | |
1381 | "could not allocate extended descriptor\n"); | |
1382 | return -ENOMEM; | |
1383 | } | |
1384 | ||
1385 | edesc->src_nents = src_nents; | |
643b39b0 | 1386 | edesc->chained = chained; |
045e3678 YK |
1387 | edesc->sec4_sg_bytes = sec4_sg_bytes; |
1388 | edesc->sec4_sg = (void *)edesc + sizeof(struct ahash_edesc) + | |
1389 | DESC_JOB_IO_LEN; | |
1390 | edesc->sec4_sg_dma = dma_map_single(jrdev, edesc->sec4_sg, | |
1391 | sec4_sg_bytes, | |
1392 | DMA_TO_DEVICE); | |
1393 | ||
1394 | if (src_nents) { | |
1395 | sg_to_sec4_sg_last(req->src, src_nents, | |
1396 | edesc->sec4_sg, 0); | |
1397 | src_dma = edesc->sec4_sg_dma; | |
1398 | options = LDST_SGF; | |
1399 | } else { | |
1400 | src_dma = sg_dma_address(req->src); | |
1401 | options = 0; | |
1402 | } | |
1403 | ||
1404 | if (*next_buflen) | |
1405 | sg_copy_part(next_buf, req->src, to_hash, req->nbytes); | |
1406 | ||
1407 | sh_len = desc_len(sh_desc); | |
1408 | desc = edesc->hw_desc; | |
1409 | init_job_desc_shared(desc, ptr, sh_len, HDR_SHARE_DEFER | | |
1410 | HDR_REVERSE); | |
1411 | ||
1412 | append_seq_in_ptr(desc, src_dma, to_hash, options); | |
1413 | ||
1414 | map_seq_out_ptr_ctx(desc, jrdev, state, ctx->ctx_len); | |
1415 | ||
1416 | #ifdef DEBUG | |
514df281 | 1417 | print_hex_dump(KERN_ERR, "jobdesc@"__stringify(__LINE__)": ", |
045e3678 YK |
1418 | DUMP_PREFIX_ADDRESS, 16, 4, desc, |
1419 | desc_bytes(desc), 1); | |
1420 | #endif | |
1421 | ||
1422 | ret = caam_jr_enqueue(jrdev, desc, ahash_done_ctx_dst, | |
1423 | req); | |
1424 | if (!ret) { | |
1425 | ret = -EINPROGRESS; | |
1426 | state->update = ahash_update_ctx; | |
1427 | state->finup = ahash_finup_ctx; | |
1428 | state->final = ahash_final_ctx; | |
1429 | } else { | |
1430 | ahash_unmap_ctx(jrdev, edesc, req, ctx->ctx_len, | |
1431 | DMA_TO_DEVICE); | |
1432 | kfree(edesc); | |
1433 | } | |
1434 | } else if (*next_buflen) { | |
1435 | state->update = ahash_update_no_ctx; | |
1436 | state->finup = ahash_finup_no_ctx; | |
1437 | state->final = ahash_final_no_ctx; | |
1438 | sg_copy(next_buf, req->src, req->nbytes); | |
1439 | } | |
1440 | #ifdef DEBUG | |
514df281 | 1441 | print_hex_dump(KERN_ERR, "next buf@"__stringify(__LINE__)": ", |
045e3678 YK |
1442 | DUMP_PREFIX_ADDRESS, 16, 4, next_buf, |
1443 | *next_buflen, 1); | |
1444 | #endif | |
1445 | ||
1446 | return ret; | |
1447 | } | |
1448 | ||
1449 | static int ahash_finup_first(struct ahash_request *req) | |
1450 | { | |
1451 | return ahash_digest(req); | |
1452 | } | |
1453 | ||
1454 | static int ahash_init(struct ahash_request *req) | |
1455 | { | |
1456 | struct caam_hash_state *state = ahash_request_ctx(req); | |
1457 | ||
1458 | state->update = ahash_update_first; | |
1459 | state->finup = ahash_finup_first; | |
1460 | state->final = ahash_final_no_ctx; | |
1461 | ||
1462 | state->current_buf = 0; | |
1463 | ||
1464 | return 0; | |
1465 | } | |
1466 | ||
1467 | static int ahash_update(struct ahash_request *req) | |
1468 | { | |
1469 | struct caam_hash_state *state = ahash_request_ctx(req); | |
1470 | ||
1471 | return state->update(req); | |
1472 | } | |
1473 | ||
1474 | static int ahash_finup(struct ahash_request *req) | |
1475 | { | |
1476 | struct caam_hash_state *state = ahash_request_ctx(req); | |
1477 | ||
1478 | return state->finup(req); | |
1479 | } | |
1480 | ||
1481 | static int ahash_final(struct ahash_request *req) | |
1482 | { | |
1483 | struct caam_hash_state *state = ahash_request_ctx(req); | |
1484 | ||
1485 | return state->final(req); | |
1486 | } | |
1487 | ||
1488 | static int ahash_export(struct ahash_request *req, void *out) | |
1489 | { | |
1490 | struct crypto_ahash *ahash = crypto_ahash_reqtfm(req); | |
1491 | struct caam_hash_ctx *ctx = crypto_ahash_ctx(ahash); | |
1492 | struct caam_hash_state *state = ahash_request_ctx(req); | |
1493 | ||
1494 | memcpy(out, ctx, sizeof(struct caam_hash_ctx)); | |
1495 | memcpy(out + sizeof(struct caam_hash_ctx), state, | |
1496 | sizeof(struct caam_hash_state)); | |
1497 | return 0; | |
1498 | } | |
1499 | ||
1500 | static int ahash_import(struct ahash_request *req, const void *in) | |
1501 | { | |
1502 | struct crypto_ahash *ahash = crypto_ahash_reqtfm(req); | |
1503 | struct caam_hash_ctx *ctx = crypto_ahash_ctx(ahash); | |
1504 | struct caam_hash_state *state = ahash_request_ctx(req); | |
1505 | ||
1506 | memcpy(ctx, in, sizeof(struct caam_hash_ctx)); | |
1507 | memcpy(state, in + sizeof(struct caam_hash_ctx), | |
1508 | sizeof(struct caam_hash_state)); | |
1509 | return 0; | |
1510 | } | |
1511 | ||
1512 | struct caam_hash_template { | |
1513 | char name[CRYPTO_MAX_ALG_NAME]; | |
1514 | char driver_name[CRYPTO_MAX_ALG_NAME]; | |
b0e09bae YK |
1515 | char hmac_name[CRYPTO_MAX_ALG_NAME]; |
1516 | char hmac_driver_name[CRYPTO_MAX_ALG_NAME]; | |
045e3678 YK |
1517 | unsigned int blocksize; |
1518 | struct ahash_alg template_ahash; | |
1519 | u32 alg_type; | |
1520 | u32 alg_op; | |
1521 | }; | |
1522 | ||
1523 | /* ahash descriptors */ | |
1524 | static struct caam_hash_template driver_hash[] = { | |
1525 | { | |
b0e09bae YK |
1526 | .name = "sha1", |
1527 | .driver_name = "sha1-caam", | |
1528 | .hmac_name = "hmac(sha1)", | |
1529 | .hmac_driver_name = "hmac-sha1-caam", | |
045e3678 YK |
1530 | .blocksize = SHA1_BLOCK_SIZE, |
1531 | .template_ahash = { | |
1532 | .init = ahash_init, | |
1533 | .update = ahash_update, | |
1534 | .final = ahash_final, | |
1535 | .finup = ahash_finup, | |
1536 | .digest = ahash_digest, | |
1537 | .export = ahash_export, | |
1538 | .import = ahash_import, | |
1539 | .setkey = ahash_setkey, | |
1540 | .halg = { | |
1541 | .digestsize = SHA1_DIGEST_SIZE, | |
1542 | }, | |
1543 | }, | |
1544 | .alg_type = OP_ALG_ALGSEL_SHA1, | |
1545 | .alg_op = OP_ALG_ALGSEL_SHA1 | OP_ALG_AAI_HMAC, | |
1546 | }, { | |
b0e09bae YK |
1547 | .name = "sha224", |
1548 | .driver_name = "sha224-caam", | |
1549 | .hmac_name = "hmac(sha224)", | |
1550 | .hmac_driver_name = "hmac-sha224-caam", | |
045e3678 YK |
1551 | .blocksize = SHA224_BLOCK_SIZE, |
1552 | .template_ahash = { | |
1553 | .init = ahash_init, | |
1554 | .update = ahash_update, | |
1555 | .final = ahash_final, | |
1556 | .finup = ahash_finup, | |
1557 | .digest = ahash_digest, | |
1558 | .export = ahash_export, | |
1559 | .import = ahash_import, | |
1560 | .setkey = ahash_setkey, | |
1561 | .halg = { | |
1562 | .digestsize = SHA224_DIGEST_SIZE, | |
1563 | }, | |
1564 | }, | |
1565 | .alg_type = OP_ALG_ALGSEL_SHA224, | |
1566 | .alg_op = OP_ALG_ALGSEL_SHA224 | OP_ALG_AAI_HMAC, | |
1567 | }, { | |
b0e09bae YK |
1568 | .name = "sha256", |
1569 | .driver_name = "sha256-caam", | |
1570 | .hmac_name = "hmac(sha256)", | |
1571 | .hmac_driver_name = "hmac-sha256-caam", | |
045e3678 YK |
1572 | .blocksize = SHA256_BLOCK_SIZE, |
1573 | .template_ahash = { | |
1574 | .init = ahash_init, | |
1575 | .update = ahash_update, | |
1576 | .final = ahash_final, | |
1577 | .finup = ahash_finup, | |
1578 | .digest = ahash_digest, | |
1579 | .export = ahash_export, | |
1580 | .import = ahash_import, | |
1581 | .setkey = ahash_setkey, | |
1582 | .halg = { | |
1583 | .digestsize = SHA256_DIGEST_SIZE, | |
1584 | }, | |
1585 | }, | |
1586 | .alg_type = OP_ALG_ALGSEL_SHA256, | |
1587 | .alg_op = OP_ALG_ALGSEL_SHA256 | OP_ALG_AAI_HMAC, | |
1588 | }, { | |
b0e09bae YK |
1589 | .name = "sha384", |
1590 | .driver_name = "sha384-caam", | |
1591 | .hmac_name = "hmac(sha384)", | |
1592 | .hmac_driver_name = "hmac-sha384-caam", | |
045e3678 YK |
1593 | .blocksize = SHA384_BLOCK_SIZE, |
1594 | .template_ahash = { | |
1595 | .init = ahash_init, | |
1596 | .update = ahash_update, | |
1597 | .final = ahash_final, | |
1598 | .finup = ahash_finup, | |
1599 | .digest = ahash_digest, | |
1600 | .export = ahash_export, | |
1601 | .import = ahash_import, | |
1602 | .setkey = ahash_setkey, | |
1603 | .halg = { | |
1604 | .digestsize = SHA384_DIGEST_SIZE, | |
1605 | }, | |
1606 | }, | |
1607 | .alg_type = OP_ALG_ALGSEL_SHA384, | |
1608 | .alg_op = OP_ALG_ALGSEL_SHA384 | OP_ALG_AAI_HMAC, | |
1609 | }, { | |
b0e09bae YK |
1610 | .name = "sha512", |
1611 | .driver_name = "sha512-caam", | |
1612 | .hmac_name = "hmac(sha512)", | |
1613 | .hmac_driver_name = "hmac-sha512-caam", | |
045e3678 YK |
1614 | .blocksize = SHA512_BLOCK_SIZE, |
1615 | .template_ahash = { | |
1616 | .init = ahash_init, | |
1617 | .update = ahash_update, | |
1618 | .final = ahash_final, | |
1619 | .finup = ahash_finup, | |
1620 | .digest = ahash_digest, | |
1621 | .export = ahash_export, | |
1622 | .import = ahash_import, | |
1623 | .setkey = ahash_setkey, | |
1624 | .halg = { | |
1625 | .digestsize = SHA512_DIGEST_SIZE, | |
1626 | }, | |
1627 | }, | |
1628 | .alg_type = OP_ALG_ALGSEL_SHA512, | |
1629 | .alg_op = OP_ALG_ALGSEL_SHA512 | OP_ALG_AAI_HMAC, | |
1630 | }, { | |
b0e09bae YK |
1631 | .name = "md5", |
1632 | .driver_name = "md5-caam", | |
1633 | .hmac_name = "hmac(md5)", | |
1634 | .hmac_driver_name = "hmac-md5-caam", | |
045e3678 YK |
1635 | .blocksize = MD5_BLOCK_WORDS * 4, |
1636 | .template_ahash = { | |
1637 | .init = ahash_init, | |
1638 | .update = ahash_update, | |
1639 | .final = ahash_final, | |
1640 | .finup = ahash_finup, | |
1641 | .digest = ahash_digest, | |
1642 | .export = ahash_export, | |
1643 | .import = ahash_import, | |
1644 | .setkey = ahash_setkey, | |
1645 | .halg = { | |
1646 | .digestsize = MD5_DIGEST_SIZE, | |
1647 | }, | |
1648 | }, | |
1649 | .alg_type = OP_ALG_ALGSEL_MD5, | |
1650 | .alg_op = OP_ALG_ALGSEL_MD5 | OP_ALG_AAI_HMAC, | |
1651 | }, | |
1652 | }; | |
1653 | ||
1654 | struct caam_hash_alg { | |
1655 | struct list_head entry; | |
1656 | struct device *ctrldev; | |
1657 | int alg_type; | |
1658 | int alg_op; | |
1659 | struct ahash_alg ahash_alg; | |
1660 | }; | |
1661 | ||
1662 | static int caam_hash_cra_init(struct crypto_tfm *tfm) | |
1663 | { | |
1664 | struct crypto_ahash *ahash = __crypto_ahash_cast(tfm); | |
1665 | struct crypto_alg *base = tfm->__crt_alg; | |
1666 | struct hash_alg_common *halg = | |
1667 | container_of(base, struct hash_alg_common, base); | |
1668 | struct ahash_alg *alg = | |
1669 | container_of(halg, struct ahash_alg, halg); | |
1670 | struct caam_hash_alg *caam_hash = | |
1671 | container_of(alg, struct caam_hash_alg, ahash_alg); | |
1672 | struct caam_hash_ctx *ctx = crypto_tfm_ctx(tfm); | |
1673 | struct caam_drv_private *priv = dev_get_drvdata(caam_hash->ctrldev); | |
1674 | /* Sizes for MDHA running digests: MD5, SHA1, 224, 256, 384, 512 */ | |
1675 | static const u8 runninglen[] = { HASH_MSG_LEN + MD5_DIGEST_SIZE, | |
1676 | HASH_MSG_LEN + SHA1_DIGEST_SIZE, | |
1677 | HASH_MSG_LEN + 32, | |
1678 | HASH_MSG_LEN + SHA256_DIGEST_SIZE, | |
1679 | HASH_MSG_LEN + 64, | |
1680 | HASH_MSG_LEN + SHA512_DIGEST_SIZE }; | |
1681 | int tgt_jr = atomic_inc_return(&priv->tfm_count); | |
1682 | int ret = 0; | |
313ea293 | 1683 | struct platform_device *pdev; |
045e3678 YK |
1684 | |
1685 | /* | |
1686 | * distribute tfms across job rings to ensure in-order | |
1687 | * crypto request processing per tfm | |
1688 | */ | |
313ea293 RG |
1689 | pdev = priv->jrpdev[tgt_jr % priv->total_jobrs]; |
1690 | ctx->jrdev = &pdev->dev; | |
045e3678 YK |
1691 | |
1692 | /* copy descriptor header template value */ | |
1693 | ctx->alg_type = OP_TYPE_CLASS2_ALG | caam_hash->alg_type; | |
1694 | ctx->alg_op = OP_TYPE_CLASS2_ALG | caam_hash->alg_op; | |
1695 | ||
1696 | ctx->ctx_len = runninglen[(ctx->alg_op & OP_ALG_ALGSEL_SUBMASK) >> | |
1697 | OP_ALG_ALGSEL_SHIFT]; | |
1698 | ||
1699 | crypto_ahash_set_reqsize(__crypto_ahash_cast(tfm), | |
1700 | sizeof(struct caam_hash_state)); | |
1701 | ||
1702 | ret = ahash_set_sh_desc(ahash); | |
1703 | ||
1704 | return ret; | |
1705 | } | |
1706 | ||
1707 | static void caam_hash_cra_exit(struct crypto_tfm *tfm) | |
1708 | { | |
1709 | struct caam_hash_ctx *ctx = crypto_tfm_ctx(tfm); | |
1710 | ||
1711 | if (ctx->sh_desc_update_dma && | |
1712 | !dma_mapping_error(ctx->jrdev, ctx->sh_desc_update_dma)) | |
1713 | dma_unmap_single(ctx->jrdev, ctx->sh_desc_update_dma, | |
1714 | desc_bytes(ctx->sh_desc_update), | |
1715 | DMA_TO_DEVICE); | |
1716 | if (ctx->sh_desc_update_first_dma && | |
1717 | !dma_mapping_error(ctx->jrdev, ctx->sh_desc_update_first_dma)) | |
1718 | dma_unmap_single(ctx->jrdev, ctx->sh_desc_update_first_dma, | |
1719 | desc_bytes(ctx->sh_desc_update_first), | |
1720 | DMA_TO_DEVICE); | |
1721 | if (ctx->sh_desc_fin_dma && | |
1722 | !dma_mapping_error(ctx->jrdev, ctx->sh_desc_fin_dma)) | |
1723 | dma_unmap_single(ctx->jrdev, ctx->sh_desc_fin_dma, | |
1724 | desc_bytes(ctx->sh_desc_fin), DMA_TO_DEVICE); | |
1725 | if (ctx->sh_desc_digest_dma && | |
1726 | !dma_mapping_error(ctx->jrdev, ctx->sh_desc_digest_dma)) | |
1727 | dma_unmap_single(ctx->jrdev, ctx->sh_desc_digest_dma, | |
1728 | desc_bytes(ctx->sh_desc_digest), | |
1729 | DMA_TO_DEVICE); | |
1730 | if (ctx->sh_desc_finup_dma && | |
1731 | !dma_mapping_error(ctx->jrdev, ctx->sh_desc_finup_dma)) | |
1732 | dma_unmap_single(ctx->jrdev, ctx->sh_desc_finup_dma, | |
1733 | desc_bytes(ctx->sh_desc_finup), DMA_TO_DEVICE); | |
1734 | } | |
1735 | ||
1736 | static void __exit caam_algapi_hash_exit(void) | |
1737 | { | |
1738 | struct device_node *dev_node; | |
1739 | struct platform_device *pdev; | |
1740 | struct device *ctrldev; | |
1741 | struct caam_drv_private *priv; | |
1742 | struct caam_hash_alg *t_alg, *n; | |
1743 | ||
1744 | dev_node = of_find_compatible_node(NULL, NULL, "fsl,sec-v4.0"); | |
95bcaa39 SL |
1745 | if (!dev_node) { |
1746 | dev_node = of_find_compatible_node(NULL, NULL, "fsl,sec4.0"); | |
1747 | if (!dev_node) | |
1748 | return; | |
1749 | } | |
045e3678 YK |
1750 | |
1751 | pdev = of_find_device_by_node(dev_node); | |
1752 | if (!pdev) | |
1753 | return; | |
1754 | ||
1755 | ctrldev = &pdev->dev; | |
1756 | of_node_put(dev_node); | |
1757 | priv = dev_get_drvdata(ctrldev); | |
1758 | ||
1759 | if (!priv->hash_list.next) | |
1760 | return; | |
1761 | ||
1762 | list_for_each_entry_safe(t_alg, n, &priv->hash_list, entry) { | |
1763 | crypto_unregister_ahash(&t_alg->ahash_alg); | |
1764 | list_del(&t_alg->entry); | |
1765 | kfree(t_alg); | |
1766 | } | |
1767 | } | |
1768 | ||
1769 | static struct caam_hash_alg * | |
b0e09bae YK |
1770 | caam_hash_alloc(struct device *ctrldev, struct caam_hash_template *template, |
1771 | bool keyed) | |
045e3678 YK |
1772 | { |
1773 | struct caam_hash_alg *t_alg; | |
1774 | struct ahash_alg *halg; | |
1775 | struct crypto_alg *alg; | |
1776 | ||
1777 | t_alg = kzalloc(sizeof(struct caam_hash_alg), GFP_KERNEL); | |
1778 | if (!t_alg) { | |
1779 | dev_err(ctrldev, "failed to allocate t_alg\n"); | |
1780 | return ERR_PTR(-ENOMEM); | |
1781 | } | |
1782 | ||
1783 | t_alg->ahash_alg = template->template_ahash; | |
1784 | halg = &t_alg->ahash_alg; | |
1785 | alg = &halg->halg.base; | |
1786 | ||
b0e09bae YK |
1787 | if (keyed) { |
1788 | snprintf(alg->cra_name, CRYPTO_MAX_ALG_NAME, "%s", | |
1789 | template->hmac_name); | |
1790 | snprintf(alg->cra_driver_name, CRYPTO_MAX_ALG_NAME, "%s", | |
1791 | template->hmac_driver_name); | |
1792 | } else { | |
1793 | snprintf(alg->cra_name, CRYPTO_MAX_ALG_NAME, "%s", | |
1794 | template->name); | |
1795 | snprintf(alg->cra_driver_name, CRYPTO_MAX_ALG_NAME, "%s", | |
1796 | template->driver_name); | |
1797 | } | |
045e3678 YK |
1798 | alg->cra_module = THIS_MODULE; |
1799 | alg->cra_init = caam_hash_cra_init; | |
1800 | alg->cra_exit = caam_hash_cra_exit; | |
1801 | alg->cra_ctxsize = sizeof(struct caam_hash_ctx); | |
1802 | alg->cra_priority = CAAM_CRA_PRIORITY; | |
1803 | alg->cra_blocksize = template->blocksize; | |
1804 | alg->cra_alignmask = 0; | |
1805 | alg->cra_flags = CRYPTO_ALG_ASYNC | CRYPTO_ALG_TYPE_AHASH; | |
1806 | alg->cra_type = &crypto_ahash_type; | |
1807 | ||
1808 | t_alg->alg_type = template->alg_type; | |
1809 | t_alg->alg_op = template->alg_op; | |
1810 | t_alg->ctrldev = ctrldev; | |
1811 | ||
1812 | return t_alg; | |
1813 | } | |
1814 | ||
1815 | static int __init caam_algapi_hash_init(void) | |
1816 | { | |
1817 | struct device_node *dev_node; | |
1818 | struct platform_device *pdev; | |
1819 | struct device *ctrldev; | |
1820 | struct caam_drv_private *priv; | |
1821 | int i = 0, err = 0; | |
1822 | ||
1823 | dev_node = of_find_compatible_node(NULL, NULL, "fsl,sec-v4.0"); | |
95bcaa39 SL |
1824 | if (!dev_node) { |
1825 | dev_node = of_find_compatible_node(NULL, NULL, "fsl,sec4.0"); | |
1826 | if (!dev_node) | |
1827 | return -ENODEV; | |
1828 | } | |
045e3678 YK |
1829 | |
1830 | pdev = of_find_device_by_node(dev_node); | |
1831 | if (!pdev) | |
1832 | return -ENODEV; | |
1833 | ||
1834 | ctrldev = &pdev->dev; | |
1835 | priv = dev_get_drvdata(ctrldev); | |
1836 | of_node_put(dev_node); | |
1837 | ||
b2744dfd AP |
1838 | /* |
1839 | * If priv is NULL, it's probably because the caam driver wasn't | |
1840 | * properly initialized (e.g. RNG4 init failed). Thus, bail out here. | |
1841 | */ | |
1842 | if (!priv) | |
1843 | return -ENODEV; | |
1844 | ||
045e3678 YK |
1845 | INIT_LIST_HEAD(&priv->hash_list); |
1846 | ||
1847 | atomic_set(&priv->tfm_count, -1); | |
1848 | ||
1849 | /* register crypto algorithms the device supports */ | |
1850 | for (i = 0; i < ARRAY_SIZE(driver_hash); i++) { | |
1851 | /* TODO: check if h/w supports alg */ | |
1852 | struct caam_hash_alg *t_alg; | |
1853 | ||
b0e09bae YK |
1854 | /* register hmac version */ |
1855 | t_alg = caam_hash_alloc(ctrldev, &driver_hash[i], true); | |
1856 | if (IS_ERR(t_alg)) { | |
1857 | err = PTR_ERR(t_alg); | |
1858 | dev_warn(ctrldev, "%s alg allocation failed\n", | |
1859 | driver_hash[i].driver_name); | |
1860 | continue; | |
1861 | } | |
1862 | ||
1863 | err = crypto_register_ahash(&t_alg->ahash_alg); | |
1864 | if (err) { | |
1865 | dev_warn(ctrldev, "%s alg registration failed\n", | |
1866 | t_alg->ahash_alg.halg.base.cra_driver_name); | |
1867 | kfree(t_alg); | |
1868 | } else | |
1869 | list_add_tail(&t_alg->entry, &priv->hash_list); | |
1870 | ||
1871 | /* register unkeyed version */ | |
1872 | t_alg = caam_hash_alloc(ctrldev, &driver_hash[i], false); | |
045e3678 YK |
1873 | if (IS_ERR(t_alg)) { |
1874 | err = PTR_ERR(t_alg); | |
1875 | dev_warn(ctrldev, "%s alg allocation failed\n", | |
1876 | driver_hash[i].driver_name); | |
1877 | continue; | |
1878 | } | |
1879 | ||
1880 | err = crypto_register_ahash(&t_alg->ahash_alg); | |
1881 | if (err) { | |
1882 | dev_warn(ctrldev, "%s alg registration failed\n", | |
1883 | t_alg->ahash_alg.halg.base.cra_driver_name); | |
1884 | kfree(t_alg); | |
1885 | } else | |
1886 | list_add_tail(&t_alg->entry, &priv->hash_list); | |
1887 | } | |
1888 | ||
1889 | return err; | |
1890 | } | |
1891 | ||
1892 | module_init(caam_algapi_hash_init); | |
1893 | module_exit(caam_algapi_hash_exit); | |
1894 | ||
1895 | MODULE_LICENSE("GPL"); | |
1896 | MODULE_DESCRIPTION("FSL CAAM support for ahash functions of crypto API"); | |
1897 | MODULE_AUTHOR("Freescale Semiconductor - NMG"); |