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d2912cb1 | 1 | // SPDX-License-Identifier: GPL-2.0-only |
63b94509 TL |
2 | /* |
3 | * AMD Cryptographic Coprocessor (CCP) driver | |
4 | * | |
fa5cd1c7 | 5 | * Copyright (C) 2013,2018 Advanced Micro Devices, Inc. |
63b94509 TL |
6 | * |
7 | * Author: Tom Lendacky <thomas.lendacky@amd.com> | |
a43eb985 | 8 | * Author: Gary R Hook <gary.hook@amd.com> |
63b94509 TL |
9 | */ |
10 | ||
11 | #include <linux/module.h> | |
12 | #include <linux/kernel.h> | |
13 | #include <linux/pci.h> | |
63b94509 | 14 | #include <linux/interrupt.h> |
63b94509 | 15 | #include <crypto/scatterwalk.h> |
990672d4 | 16 | #include <crypto/des.h> |
ea0375af | 17 | #include <linux/ccp.h> |
63b94509 TL |
18 | |
19 | #include "ccp-dev.h" | |
20 | ||
c11baa02 | 21 | /* SHA initial context values */ |
4b394a23 | 22 | static const __be32 ccp_sha1_init[SHA1_DIGEST_SIZE / sizeof(__be32)] = { |
c11baa02 TL |
23 | cpu_to_be32(SHA1_H0), cpu_to_be32(SHA1_H1), |
24 | cpu_to_be32(SHA1_H2), cpu_to_be32(SHA1_H3), | |
4b394a23 | 25 | cpu_to_be32(SHA1_H4), |
c11baa02 TL |
26 | }; |
27 | ||
4b394a23 | 28 | static const __be32 ccp_sha224_init[SHA256_DIGEST_SIZE / sizeof(__be32)] = { |
c11baa02 TL |
29 | cpu_to_be32(SHA224_H0), cpu_to_be32(SHA224_H1), |
30 | cpu_to_be32(SHA224_H2), cpu_to_be32(SHA224_H3), | |
31 | cpu_to_be32(SHA224_H4), cpu_to_be32(SHA224_H5), | |
32 | cpu_to_be32(SHA224_H6), cpu_to_be32(SHA224_H7), | |
33 | }; | |
34 | ||
4b394a23 | 35 | static const __be32 ccp_sha256_init[SHA256_DIGEST_SIZE / sizeof(__be32)] = { |
c11baa02 TL |
36 | cpu_to_be32(SHA256_H0), cpu_to_be32(SHA256_H1), |
37 | cpu_to_be32(SHA256_H2), cpu_to_be32(SHA256_H3), | |
38 | cpu_to_be32(SHA256_H4), cpu_to_be32(SHA256_H5), | |
39 | cpu_to_be32(SHA256_H6), cpu_to_be32(SHA256_H7), | |
40 | }; | |
41 | ||
ccebcf3f GH |
42 | static const __be64 ccp_sha384_init[SHA512_DIGEST_SIZE / sizeof(__be64)] = { |
43 | cpu_to_be64(SHA384_H0), cpu_to_be64(SHA384_H1), | |
44 | cpu_to_be64(SHA384_H2), cpu_to_be64(SHA384_H3), | |
45 | cpu_to_be64(SHA384_H4), cpu_to_be64(SHA384_H5), | |
46 | cpu_to_be64(SHA384_H6), cpu_to_be64(SHA384_H7), | |
47 | }; | |
48 | ||
49 | static const __be64 ccp_sha512_init[SHA512_DIGEST_SIZE / sizeof(__be64)] = { | |
50 | cpu_to_be64(SHA512_H0), cpu_to_be64(SHA512_H1), | |
51 | cpu_to_be64(SHA512_H2), cpu_to_be64(SHA512_H3), | |
52 | cpu_to_be64(SHA512_H4), cpu_to_be64(SHA512_H5), | |
53 | cpu_to_be64(SHA512_H6), cpu_to_be64(SHA512_H7), | |
54 | }; | |
55 | ||
4b394a23 GH |
56 | #define CCP_NEW_JOBID(ccp) ((ccp->vdata->version == CCP_VERSION(3, 0)) ? \ |
57 | ccp_gen_jobid(ccp) : 0) | |
58 | ||
63b94509 TL |
59 | static u32 ccp_gen_jobid(struct ccp_device *ccp) |
60 | { | |
61 | return atomic_inc_return(&ccp->current_id) & CCP_JOBID_MASK; | |
62 | } | |
63 | ||
64 | static void ccp_sg_free(struct ccp_sg_workarea *wa) | |
65 | { | |
66 | if (wa->dma_count) | |
67 | dma_unmap_sg(wa->dma_dev, wa->dma_sg, wa->nents, wa->dma_dir); | |
68 | ||
69 | wa->dma_count = 0; | |
70 | } | |
71 | ||
72 | static int ccp_init_sg_workarea(struct ccp_sg_workarea *wa, struct device *dev, | |
81a59f00 | 73 | struct scatterlist *sg, u64 len, |
63b94509 TL |
74 | enum dma_data_direction dma_dir) |
75 | { | |
76 | memset(wa, 0, sizeof(*wa)); | |
77 | ||
78 | wa->sg = sg; | |
79 | if (!sg) | |
80 | return 0; | |
81 | ||
fb43f694 TL |
82 | wa->nents = sg_nents_for_len(sg, len); |
83 | if (wa->nents < 0) | |
84 | return wa->nents; | |
85 | ||
63b94509 TL |
86 | wa->bytes_left = len; |
87 | wa->sg_used = 0; | |
88 | ||
89 | if (len == 0) | |
90 | return 0; | |
91 | ||
92 | if (dma_dir == DMA_NONE) | |
93 | return 0; | |
94 | ||
95 | wa->dma_sg = sg; | |
96 | wa->dma_dev = dev; | |
97 | wa->dma_dir = dma_dir; | |
98 | wa->dma_count = dma_map_sg(dev, sg, wa->nents, dma_dir); | |
99 | if (!wa->dma_count) | |
100 | return -ENOMEM; | |
101 | ||
63b94509 TL |
102 | return 0; |
103 | } | |
104 | ||
105 | static void ccp_update_sg_workarea(struct ccp_sg_workarea *wa, unsigned int len) | |
106 | { | |
81a59f00 | 107 | unsigned int nbytes = min_t(u64, len, wa->bytes_left); |
63b94509 TL |
108 | |
109 | if (!wa->sg) | |
110 | return; | |
111 | ||
112 | wa->sg_used += nbytes; | |
113 | wa->bytes_left -= nbytes; | |
114 | if (wa->sg_used == wa->sg->length) { | |
115 | wa->sg = sg_next(wa->sg); | |
116 | wa->sg_used = 0; | |
117 | } | |
118 | } | |
119 | ||
120 | static void ccp_dm_free(struct ccp_dm_workarea *wa) | |
121 | { | |
122 | if (wa->length <= CCP_DMAPOOL_MAX_SIZE) { | |
123 | if (wa->address) | |
124 | dma_pool_free(wa->dma_pool, wa->address, | |
125 | wa->dma.address); | |
126 | } else { | |
127 | if (wa->dma.address) | |
128 | dma_unmap_single(wa->dev, wa->dma.address, wa->length, | |
129 | wa->dma.dir); | |
130 | kfree(wa->address); | |
131 | } | |
132 | ||
133 | wa->address = NULL; | |
134 | wa->dma.address = 0; | |
135 | } | |
136 | ||
137 | static int ccp_init_dm_workarea(struct ccp_dm_workarea *wa, | |
138 | struct ccp_cmd_queue *cmd_q, | |
139 | unsigned int len, | |
140 | enum dma_data_direction dir) | |
141 | { | |
142 | memset(wa, 0, sizeof(*wa)); | |
143 | ||
144 | if (!len) | |
145 | return 0; | |
146 | ||
147 | wa->dev = cmd_q->ccp->dev; | |
148 | wa->length = len; | |
149 | ||
150 | if (len <= CCP_DMAPOOL_MAX_SIZE) { | |
151 | wa->dma_pool = cmd_q->dma_pool; | |
152 | ||
153 | wa->address = dma_pool_alloc(wa->dma_pool, GFP_KERNEL, | |
154 | &wa->dma.address); | |
155 | if (!wa->address) | |
156 | return -ENOMEM; | |
157 | ||
158 | wa->dma.length = CCP_DMAPOOL_MAX_SIZE; | |
159 | ||
160 | memset(wa->address, 0, CCP_DMAPOOL_MAX_SIZE); | |
161 | } else { | |
162 | wa->address = kzalloc(len, GFP_KERNEL); | |
163 | if (!wa->address) | |
164 | return -ENOMEM; | |
165 | ||
166 | wa->dma.address = dma_map_single(wa->dev, wa->address, len, | |
167 | dir); | |
ef4064bb | 168 | if (dma_mapping_error(wa->dev, wa->dma.address)) |
63b94509 TL |
169 | return -ENOMEM; |
170 | ||
171 | wa->dma.length = len; | |
172 | } | |
173 | wa->dma.dir = dir; | |
174 | ||
175 | return 0; | |
176 | } | |
177 | ||
b698a9f4 GH |
178 | static int ccp_set_dm_area(struct ccp_dm_workarea *wa, unsigned int wa_offset, |
179 | struct scatterlist *sg, unsigned int sg_offset, | |
180 | unsigned int len) | |
63b94509 TL |
181 | { |
182 | WARN_ON(!wa->address); | |
183 | ||
b698a9f4 GH |
184 | if (len > (wa->length - wa_offset)) |
185 | return -EINVAL; | |
186 | ||
63b94509 TL |
187 | scatterwalk_map_and_copy(wa->address + wa_offset, sg, sg_offset, len, |
188 | 0); | |
b698a9f4 | 189 | return 0; |
63b94509 TL |
190 | } |
191 | ||
192 | static void ccp_get_dm_area(struct ccp_dm_workarea *wa, unsigned int wa_offset, | |
193 | struct scatterlist *sg, unsigned int sg_offset, | |
194 | unsigned int len) | |
195 | { | |
196 | WARN_ON(!wa->address); | |
197 | ||
198 | scatterwalk_map_and_copy(wa->address + wa_offset, sg, sg_offset, len, | |
199 | 1); | |
200 | } | |
201 | ||
355eba5d | 202 | static int ccp_reverse_set_dm_area(struct ccp_dm_workarea *wa, |
83d650ab | 203 | unsigned int wa_offset, |
355eba5d | 204 | struct scatterlist *sg, |
83d650ab GH |
205 | unsigned int sg_offset, |
206 | unsigned int len) | |
63b94509 | 207 | { |
83d650ab | 208 | u8 *p, *q; |
b698a9f4 | 209 | int rc; |
83d650ab | 210 | |
b698a9f4 GH |
211 | rc = ccp_set_dm_area(wa, wa_offset, sg, sg_offset, len); |
212 | if (rc) | |
213 | return rc; | |
83d650ab GH |
214 | |
215 | p = wa->address + wa_offset; | |
216 | q = p + len - 1; | |
217 | while (p < q) { | |
218 | *p = *p ^ *q; | |
219 | *q = *p ^ *q; | |
220 | *p = *p ^ *q; | |
221 | p++; | |
222 | q--; | |
63b94509 | 223 | } |
355eba5d | 224 | return 0; |
63b94509 TL |
225 | } |
226 | ||
227 | static void ccp_reverse_get_dm_area(struct ccp_dm_workarea *wa, | |
83d650ab | 228 | unsigned int wa_offset, |
63b94509 | 229 | struct scatterlist *sg, |
83d650ab | 230 | unsigned int sg_offset, |
63b94509 TL |
231 | unsigned int len) |
232 | { | |
83d650ab GH |
233 | u8 *p, *q; |
234 | ||
235 | p = wa->address + wa_offset; | |
236 | q = p + len - 1; | |
237 | while (p < q) { | |
238 | *p = *p ^ *q; | |
239 | *q = *p ^ *q; | |
240 | *p = *p ^ *q; | |
241 | p++; | |
242 | q--; | |
63b94509 | 243 | } |
83d650ab GH |
244 | |
245 | ccp_get_dm_area(wa, wa_offset, sg, sg_offset, len); | |
63b94509 TL |
246 | } |
247 | ||
248 | static void ccp_free_data(struct ccp_data *data, struct ccp_cmd_queue *cmd_q) | |
249 | { | |
250 | ccp_dm_free(&data->dm_wa); | |
251 | ccp_sg_free(&data->sg_wa); | |
252 | } | |
253 | ||
254 | static int ccp_init_data(struct ccp_data *data, struct ccp_cmd_queue *cmd_q, | |
81a59f00 | 255 | struct scatterlist *sg, u64 sg_len, |
63b94509 TL |
256 | unsigned int dm_len, |
257 | enum dma_data_direction dir) | |
258 | { | |
259 | int ret; | |
260 | ||
261 | memset(data, 0, sizeof(*data)); | |
262 | ||
263 | ret = ccp_init_sg_workarea(&data->sg_wa, cmd_q->ccp->dev, sg, sg_len, | |
264 | dir); | |
265 | if (ret) | |
266 | goto e_err; | |
267 | ||
268 | ret = ccp_init_dm_workarea(&data->dm_wa, cmd_q, dm_len, dir); | |
269 | if (ret) | |
270 | goto e_err; | |
271 | ||
272 | return 0; | |
273 | ||
274 | e_err: | |
275 | ccp_free_data(data, cmd_q); | |
276 | ||
277 | return ret; | |
278 | } | |
279 | ||
280 | static unsigned int ccp_queue_buf(struct ccp_data *data, unsigned int from) | |
281 | { | |
282 | struct ccp_sg_workarea *sg_wa = &data->sg_wa; | |
283 | struct ccp_dm_workarea *dm_wa = &data->dm_wa; | |
284 | unsigned int buf_count, nbytes; | |
285 | ||
286 | /* Clear the buffer if setting it */ | |
287 | if (!from) | |
288 | memset(dm_wa->address, 0, dm_wa->length); | |
289 | ||
290 | if (!sg_wa->sg) | |
291 | return 0; | |
292 | ||
81a59f00 TL |
293 | /* Perform the copy operation |
294 | * nbytes will always be <= UINT_MAX because dm_wa->length is | |
295 | * an unsigned int | |
296 | */ | |
297 | nbytes = min_t(u64, sg_wa->bytes_left, dm_wa->length); | |
63b94509 TL |
298 | scatterwalk_map_and_copy(dm_wa->address, sg_wa->sg, sg_wa->sg_used, |
299 | nbytes, from); | |
300 | ||
301 | /* Update the structures and generate the count */ | |
302 | buf_count = 0; | |
303 | while (sg_wa->bytes_left && (buf_count < dm_wa->length)) { | |
81a59f00 TL |
304 | nbytes = min(sg_wa->sg->length - sg_wa->sg_used, |
305 | dm_wa->length - buf_count); | |
306 | nbytes = min_t(u64, sg_wa->bytes_left, nbytes); | |
63b94509 TL |
307 | |
308 | buf_count += nbytes; | |
309 | ccp_update_sg_workarea(sg_wa, nbytes); | |
310 | } | |
311 | ||
312 | return buf_count; | |
313 | } | |
314 | ||
315 | static unsigned int ccp_fill_queue_buf(struct ccp_data *data) | |
316 | { | |
317 | return ccp_queue_buf(data, 0); | |
318 | } | |
319 | ||
320 | static unsigned int ccp_empty_queue_buf(struct ccp_data *data) | |
321 | { | |
322 | return ccp_queue_buf(data, 1); | |
323 | } | |
324 | ||
325 | static void ccp_prepare_data(struct ccp_data *src, struct ccp_data *dst, | |
326 | struct ccp_op *op, unsigned int block_size, | |
327 | bool blocksize_op) | |
328 | { | |
329 | unsigned int sg_src_len, sg_dst_len, op_len; | |
330 | ||
331 | /* The CCP can only DMA from/to one address each per operation. This | |
332 | * requires that we find the smallest DMA area between the source | |
81a59f00 TL |
333 | * and destination. The resulting len values will always be <= UINT_MAX |
334 | * because the dma length is an unsigned int. | |
63b94509 | 335 | */ |
81a59f00 TL |
336 | sg_src_len = sg_dma_len(src->sg_wa.sg) - src->sg_wa.sg_used; |
337 | sg_src_len = min_t(u64, src->sg_wa.bytes_left, sg_src_len); | |
63b94509 TL |
338 | |
339 | if (dst) { | |
81a59f00 TL |
340 | sg_dst_len = sg_dma_len(dst->sg_wa.sg) - dst->sg_wa.sg_used; |
341 | sg_dst_len = min_t(u64, src->sg_wa.bytes_left, sg_dst_len); | |
63b94509 | 342 | op_len = min(sg_src_len, sg_dst_len); |
8db88467 | 343 | } else { |
63b94509 | 344 | op_len = sg_src_len; |
8db88467 | 345 | } |
63b94509 TL |
346 | |
347 | /* The data operation length will be at least block_size in length | |
348 | * or the smaller of available sg room remaining for the source or | |
349 | * the destination | |
350 | */ | |
351 | op_len = max(op_len, block_size); | |
352 | ||
353 | /* Unless we have to buffer data, there's no reason to wait */ | |
354 | op->soc = 0; | |
355 | ||
356 | if (sg_src_len < block_size) { | |
357 | /* Not enough data in the sg element, so it | |
358 | * needs to be buffered into a blocksize chunk | |
359 | */ | |
360 | int cp_len = ccp_fill_queue_buf(src); | |
361 | ||
362 | op->soc = 1; | |
363 | op->src.u.dma.address = src->dm_wa.dma.address; | |
364 | op->src.u.dma.offset = 0; | |
365 | op->src.u.dma.length = (blocksize_op) ? block_size : cp_len; | |
366 | } else { | |
367 | /* Enough data in the sg element, but we need to | |
368 | * adjust for any previously copied data | |
369 | */ | |
370 | op->src.u.dma.address = sg_dma_address(src->sg_wa.sg); | |
371 | op->src.u.dma.offset = src->sg_wa.sg_used; | |
372 | op->src.u.dma.length = op_len & ~(block_size - 1); | |
373 | ||
374 | ccp_update_sg_workarea(&src->sg_wa, op->src.u.dma.length); | |
375 | } | |
376 | ||
377 | if (dst) { | |
378 | if (sg_dst_len < block_size) { | |
379 | /* Not enough room in the sg element or we're on the | |
380 | * last piece of data (when using padding), so the | |
381 | * output needs to be buffered into a blocksize chunk | |
382 | */ | |
383 | op->soc = 1; | |
384 | op->dst.u.dma.address = dst->dm_wa.dma.address; | |
385 | op->dst.u.dma.offset = 0; | |
386 | op->dst.u.dma.length = op->src.u.dma.length; | |
387 | } else { | |
388 | /* Enough room in the sg element, but we need to | |
389 | * adjust for any previously used area | |
390 | */ | |
391 | op->dst.u.dma.address = sg_dma_address(dst->sg_wa.sg); | |
392 | op->dst.u.dma.offset = dst->sg_wa.sg_used; | |
393 | op->dst.u.dma.length = op->src.u.dma.length; | |
394 | } | |
395 | } | |
396 | } | |
397 | ||
398 | static void ccp_process_data(struct ccp_data *src, struct ccp_data *dst, | |
399 | struct ccp_op *op) | |
400 | { | |
401 | op->init = 0; | |
402 | ||
403 | if (dst) { | |
404 | if (op->dst.u.dma.address == dst->dm_wa.dma.address) | |
405 | ccp_empty_queue_buf(dst); | |
406 | else | |
407 | ccp_update_sg_workarea(&dst->sg_wa, | |
408 | op->dst.u.dma.length); | |
409 | } | |
410 | } | |
411 | ||
956ee21a GH |
412 | static int ccp_copy_to_from_sb(struct ccp_cmd_queue *cmd_q, |
413 | struct ccp_dm_workarea *wa, u32 jobid, u32 sb, | |
414 | u32 byte_swap, bool from) | |
63b94509 TL |
415 | { |
416 | struct ccp_op op; | |
417 | ||
418 | memset(&op, 0, sizeof(op)); | |
419 | ||
420 | op.cmd_q = cmd_q; | |
421 | op.jobid = jobid; | |
422 | op.eom = 1; | |
423 | ||
424 | if (from) { | |
425 | op.soc = 1; | |
956ee21a GH |
426 | op.src.type = CCP_MEMTYPE_SB; |
427 | op.src.u.sb = sb; | |
63b94509 TL |
428 | op.dst.type = CCP_MEMTYPE_SYSTEM; |
429 | op.dst.u.dma.address = wa->dma.address; | |
430 | op.dst.u.dma.length = wa->length; | |
431 | } else { | |
432 | op.src.type = CCP_MEMTYPE_SYSTEM; | |
433 | op.src.u.dma.address = wa->dma.address; | |
434 | op.src.u.dma.length = wa->length; | |
956ee21a GH |
435 | op.dst.type = CCP_MEMTYPE_SB; |
436 | op.dst.u.sb = sb; | |
63b94509 TL |
437 | } |
438 | ||
439 | op.u.passthru.byte_swap = byte_swap; | |
440 | ||
a43eb985 | 441 | return cmd_q->ccp->vdata->perform->passthru(&op); |
63b94509 TL |
442 | } |
443 | ||
956ee21a GH |
444 | static int ccp_copy_to_sb(struct ccp_cmd_queue *cmd_q, |
445 | struct ccp_dm_workarea *wa, u32 jobid, u32 sb, | |
446 | u32 byte_swap) | |
63b94509 | 447 | { |
956ee21a | 448 | return ccp_copy_to_from_sb(cmd_q, wa, jobid, sb, byte_swap, false); |
63b94509 TL |
449 | } |
450 | ||
956ee21a GH |
451 | static int ccp_copy_from_sb(struct ccp_cmd_queue *cmd_q, |
452 | struct ccp_dm_workarea *wa, u32 jobid, u32 sb, | |
453 | u32 byte_swap) | |
63b94509 | 454 | { |
956ee21a | 455 | return ccp_copy_to_from_sb(cmd_q, wa, jobid, sb, byte_swap, true); |
63b94509 TL |
456 | } |
457 | ||
458 | static int ccp_run_aes_cmac_cmd(struct ccp_cmd_queue *cmd_q, | |
459 | struct ccp_cmd *cmd) | |
460 | { | |
461 | struct ccp_aes_engine *aes = &cmd->u.aes; | |
462 | struct ccp_dm_workarea key, ctx; | |
463 | struct ccp_data src; | |
464 | struct ccp_op op; | |
465 | unsigned int dm_offset; | |
466 | int ret; | |
467 | ||
468 | if (!((aes->key_len == AES_KEYSIZE_128) || | |
469 | (aes->key_len == AES_KEYSIZE_192) || | |
470 | (aes->key_len == AES_KEYSIZE_256))) | |
471 | return -EINVAL; | |
472 | ||
473 | if (aes->src_len & (AES_BLOCK_SIZE - 1)) | |
474 | return -EINVAL; | |
475 | ||
476 | if (aes->iv_len != AES_BLOCK_SIZE) | |
477 | return -EINVAL; | |
478 | ||
479 | if (!aes->key || !aes->iv || !aes->src) | |
480 | return -EINVAL; | |
481 | ||
482 | if (aes->cmac_final) { | |
483 | if (aes->cmac_key_len != AES_BLOCK_SIZE) | |
484 | return -EINVAL; | |
485 | ||
486 | if (!aes->cmac_key) | |
487 | return -EINVAL; | |
488 | } | |
489 | ||
956ee21a GH |
490 | BUILD_BUG_ON(CCP_AES_KEY_SB_COUNT != 1); |
491 | BUILD_BUG_ON(CCP_AES_CTX_SB_COUNT != 1); | |
63b94509 TL |
492 | |
493 | ret = -EIO; | |
494 | memset(&op, 0, sizeof(op)); | |
495 | op.cmd_q = cmd_q; | |
4b394a23 | 496 | op.jobid = CCP_NEW_JOBID(cmd_q->ccp); |
956ee21a GH |
497 | op.sb_key = cmd_q->sb_key; |
498 | op.sb_ctx = cmd_q->sb_ctx; | |
63b94509 TL |
499 | op.init = 1; |
500 | op.u.aes.type = aes->type; | |
501 | op.u.aes.mode = aes->mode; | |
502 | op.u.aes.action = aes->action; | |
503 | ||
956ee21a | 504 | /* All supported key sizes fit in a single (32-byte) SB entry |
63b94509 TL |
505 | * and must be in little endian format. Use the 256-bit byte |
506 | * swap passthru option to convert from big endian to little | |
507 | * endian. | |
508 | */ | |
509 | ret = ccp_init_dm_workarea(&key, cmd_q, | |
956ee21a | 510 | CCP_AES_KEY_SB_COUNT * CCP_SB_BYTES, |
63b94509 TL |
511 | DMA_TO_DEVICE); |
512 | if (ret) | |
513 | return ret; | |
514 | ||
956ee21a | 515 | dm_offset = CCP_SB_BYTES - aes->key_len; |
b698a9f4 GH |
516 | ret = ccp_set_dm_area(&key, dm_offset, aes->key, 0, aes->key_len); |
517 | if (ret) | |
518 | goto e_key; | |
956ee21a GH |
519 | ret = ccp_copy_to_sb(cmd_q, &key, op.jobid, op.sb_key, |
520 | CCP_PASSTHRU_BYTESWAP_256BIT); | |
63b94509 TL |
521 | if (ret) { |
522 | cmd->engine_error = cmd_q->cmd_error; | |
523 | goto e_key; | |
524 | } | |
525 | ||
956ee21a | 526 | /* The AES context fits in a single (32-byte) SB entry and |
63b94509 TL |
527 | * must be in little endian format. Use the 256-bit byte swap |
528 | * passthru option to convert from big endian to little endian. | |
529 | */ | |
530 | ret = ccp_init_dm_workarea(&ctx, cmd_q, | |
956ee21a | 531 | CCP_AES_CTX_SB_COUNT * CCP_SB_BYTES, |
63b94509 TL |
532 | DMA_BIDIRECTIONAL); |
533 | if (ret) | |
534 | goto e_key; | |
535 | ||
956ee21a | 536 | dm_offset = CCP_SB_BYTES - AES_BLOCK_SIZE; |
b698a9f4 GH |
537 | ret = ccp_set_dm_area(&ctx, dm_offset, aes->iv, 0, aes->iv_len); |
538 | if (ret) | |
539 | goto e_ctx; | |
956ee21a GH |
540 | ret = ccp_copy_to_sb(cmd_q, &ctx, op.jobid, op.sb_ctx, |
541 | CCP_PASSTHRU_BYTESWAP_256BIT); | |
63b94509 TL |
542 | if (ret) { |
543 | cmd->engine_error = cmd_q->cmd_error; | |
544 | goto e_ctx; | |
545 | } | |
546 | ||
547 | /* Send data to the CCP AES engine */ | |
548 | ret = ccp_init_data(&src, cmd_q, aes->src, aes->src_len, | |
549 | AES_BLOCK_SIZE, DMA_TO_DEVICE); | |
550 | if (ret) | |
551 | goto e_ctx; | |
552 | ||
553 | while (src.sg_wa.bytes_left) { | |
554 | ccp_prepare_data(&src, NULL, &op, AES_BLOCK_SIZE, true); | |
555 | if (aes->cmac_final && !src.sg_wa.bytes_left) { | |
556 | op.eom = 1; | |
557 | ||
558 | /* Push the K1/K2 key to the CCP now */ | |
956ee21a GH |
559 | ret = ccp_copy_from_sb(cmd_q, &ctx, op.jobid, |
560 | op.sb_ctx, | |
561 | CCP_PASSTHRU_BYTESWAP_256BIT); | |
63b94509 TL |
562 | if (ret) { |
563 | cmd->engine_error = cmd_q->cmd_error; | |
564 | goto e_src; | |
565 | } | |
566 | ||
b698a9f4 GH |
567 | ret = ccp_set_dm_area(&ctx, 0, aes->cmac_key, 0, |
568 | aes->cmac_key_len); | |
569 | if (ret) | |
570 | goto e_src; | |
956ee21a GH |
571 | ret = ccp_copy_to_sb(cmd_q, &ctx, op.jobid, op.sb_ctx, |
572 | CCP_PASSTHRU_BYTESWAP_256BIT); | |
63b94509 TL |
573 | if (ret) { |
574 | cmd->engine_error = cmd_q->cmd_error; | |
575 | goto e_src; | |
576 | } | |
577 | } | |
578 | ||
a43eb985 | 579 | ret = cmd_q->ccp->vdata->perform->aes(&op); |
63b94509 TL |
580 | if (ret) { |
581 | cmd->engine_error = cmd_q->cmd_error; | |
582 | goto e_src; | |
583 | } | |
584 | ||
585 | ccp_process_data(&src, NULL, &op); | |
586 | } | |
587 | ||
588 | /* Retrieve the AES context - convert from LE to BE using | |
589 | * 32-byte (256-bit) byteswapping | |
590 | */ | |
956ee21a GH |
591 | ret = ccp_copy_from_sb(cmd_q, &ctx, op.jobid, op.sb_ctx, |
592 | CCP_PASSTHRU_BYTESWAP_256BIT); | |
63b94509 TL |
593 | if (ret) { |
594 | cmd->engine_error = cmd_q->cmd_error; | |
595 | goto e_src; | |
596 | } | |
597 | ||
598 | /* ...but we only need AES_BLOCK_SIZE bytes */ | |
956ee21a | 599 | dm_offset = CCP_SB_BYTES - AES_BLOCK_SIZE; |
63b94509 TL |
600 | ccp_get_dm_area(&ctx, dm_offset, aes->iv, 0, aes->iv_len); |
601 | ||
602 | e_src: | |
603 | ccp_free_data(&src, cmd_q); | |
604 | ||
605 | e_ctx: | |
606 | ccp_dm_free(&ctx); | |
607 | ||
608 | e_key: | |
609 | ccp_dm_free(&key); | |
610 | ||
611 | return ret; | |
612 | } | |
613 | ||
36cf515b GH |
614 | static int ccp_run_aes_gcm_cmd(struct ccp_cmd_queue *cmd_q, |
615 | struct ccp_cmd *cmd) | |
616 | { | |
617 | struct ccp_aes_engine *aes = &cmd->u.aes; | |
618 | struct ccp_dm_workarea key, ctx, final_wa, tag; | |
619 | struct ccp_data src, dst; | |
620 | struct ccp_data aad; | |
621 | struct ccp_op op; | |
622 | ||
623 | unsigned long long *final; | |
624 | unsigned int dm_offset; | |
625 | unsigned int ilen; | |
626 | bool in_place = true; /* Default value */ | |
627 | int ret; | |
628 | ||
629 | struct scatterlist *p_inp, sg_inp[2]; | |
630 | struct scatterlist *p_tag, sg_tag[2]; | |
631 | struct scatterlist *p_outp, sg_outp[2]; | |
632 | struct scatterlist *p_aad; | |
633 | ||
634 | if (!aes->iv) | |
635 | return -EINVAL; | |
636 | ||
637 | if (!((aes->key_len == AES_KEYSIZE_128) || | |
638 | (aes->key_len == AES_KEYSIZE_192) || | |
639 | (aes->key_len == AES_KEYSIZE_256))) | |
640 | return -EINVAL; | |
641 | ||
642 | if (!aes->key) /* Gotta have a key SGL */ | |
643 | return -EINVAL; | |
644 | ||
645 | /* First, decompose the source buffer into AAD & PT, | |
646 | * and the destination buffer into AAD, CT & tag, or | |
647 | * the input into CT & tag. | |
648 | * It is expected that the input and output SGs will | |
649 | * be valid, even if the AAD and input lengths are 0. | |
650 | */ | |
651 | p_aad = aes->src; | |
652 | p_inp = scatterwalk_ffwd(sg_inp, aes->src, aes->aad_len); | |
653 | p_outp = scatterwalk_ffwd(sg_outp, aes->dst, aes->aad_len); | |
654 | if (aes->action == CCP_AES_ACTION_ENCRYPT) { | |
655 | ilen = aes->src_len; | |
656 | p_tag = scatterwalk_ffwd(sg_tag, p_outp, ilen); | |
657 | } else { | |
658 | /* Input length for decryption includes tag */ | |
659 | ilen = aes->src_len - AES_BLOCK_SIZE; | |
660 | p_tag = scatterwalk_ffwd(sg_tag, p_inp, ilen); | |
661 | } | |
662 | ||
663 | memset(&op, 0, sizeof(op)); | |
664 | op.cmd_q = cmd_q; | |
665 | op.jobid = CCP_NEW_JOBID(cmd_q->ccp); | |
666 | op.sb_key = cmd_q->sb_key; /* Pre-allocated */ | |
667 | op.sb_ctx = cmd_q->sb_ctx; /* Pre-allocated */ | |
668 | op.init = 1; | |
669 | op.u.aes.type = aes->type; | |
670 | ||
671 | /* Copy the key to the LSB */ | |
672 | ret = ccp_init_dm_workarea(&key, cmd_q, | |
673 | CCP_AES_CTX_SB_COUNT * CCP_SB_BYTES, | |
674 | DMA_TO_DEVICE); | |
675 | if (ret) | |
676 | return ret; | |
677 | ||
678 | dm_offset = CCP_SB_BYTES - aes->key_len; | |
b698a9f4 GH |
679 | ret = ccp_set_dm_area(&key, dm_offset, aes->key, 0, aes->key_len); |
680 | if (ret) | |
681 | goto e_key; | |
36cf515b GH |
682 | ret = ccp_copy_to_sb(cmd_q, &key, op.jobid, op.sb_key, |
683 | CCP_PASSTHRU_BYTESWAP_256BIT); | |
684 | if (ret) { | |
685 | cmd->engine_error = cmd_q->cmd_error; | |
686 | goto e_key; | |
687 | } | |
688 | ||
689 | /* Copy the context (IV) to the LSB. | |
690 | * There is an assumption here that the IV is 96 bits in length, plus | |
691 | * a nonce of 32 bits. If no IV is present, use a zeroed buffer. | |
692 | */ | |
693 | ret = ccp_init_dm_workarea(&ctx, cmd_q, | |
694 | CCP_AES_CTX_SB_COUNT * CCP_SB_BYTES, | |
695 | DMA_BIDIRECTIONAL); | |
696 | if (ret) | |
697 | goto e_key; | |
698 | ||
699 | dm_offset = CCP_AES_CTX_SB_COUNT * CCP_SB_BYTES - aes->iv_len; | |
b698a9f4 GH |
700 | ret = ccp_set_dm_area(&ctx, dm_offset, aes->iv, 0, aes->iv_len); |
701 | if (ret) | |
702 | goto e_ctx; | |
36cf515b GH |
703 | |
704 | ret = ccp_copy_to_sb(cmd_q, &ctx, op.jobid, op.sb_ctx, | |
705 | CCP_PASSTHRU_BYTESWAP_256BIT); | |
706 | if (ret) { | |
707 | cmd->engine_error = cmd_q->cmd_error; | |
708 | goto e_ctx; | |
709 | } | |
710 | ||
711 | op.init = 1; | |
712 | if (aes->aad_len > 0) { | |
713 | /* Step 1: Run a GHASH over the Additional Authenticated Data */ | |
714 | ret = ccp_init_data(&aad, cmd_q, p_aad, aes->aad_len, | |
715 | AES_BLOCK_SIZE, | |
716 | DMA_TO_DEVICE); | |
717 | if (ret) | |
718 | goto e_ctx; | |
719 | ||
720 | op.u.aes.mode = CCP_AES_MODE_GHASH; | |
721 | op.u.aes.action = CCP_AES_GHASHAAD; | |
722 | ||
723 | while (aad.sg_wa.bytes_left) { | |
724 | ccp_prepare_data(&aad, NULL, &op, AES_BLOCK_SIZE, true); | |
725 | ||
726 | ret = cmd_q->ccp->vdata->perform->aes(&op); | |
727 | if (ret) { | |
728 | cmd->engine_error = cmd_q->cmd_error; | |
729 | goto e_aad; | |
730 | } | |
731 | ||
732 | ccp_process_data(&aad, NULL, &op); | |
733 | op.init = 0; | |
734 | } | |
735 | } | |
736 | ||
737 | op.u.aes.mode = CCP_AES_MODE_GCTR; | |
738 | op.u.aes.action = aes->action; | |
739 | ||
740 | if (ilen > 0) { | |
741 | /* Step 2: Run a GCTR over the plaintext */ | |
742 | in_place = (sg_virt(p_inp) == sg_virt(p_outp)) ? true : false; | |
743 | ||
744 | ret = ccp_init_data(&src, cmd_q, p_inp, ilen, | |
745 | AES_BLOCK_SIZE, | |
746 | in_place ? DMA_BIDIRECTIONAL | |
747 | : DMA_TO_DEVICE); | |
748 | if (ret) | |
749 | goto e_ctx; | |
750 | ||
751 | if (in_place) { | |
752 | dst = src; | |
753 | } else { | |
754 | ret = ccp_init_data(&dst, cmd_q, p_outp, ilen, | |
755 | AES_BLOCK_SIZE, DMA_FROM_DEVICE); | |
756 | if (ret) | |
757 | goto e_src; | |
758 | } | |
759 | ||
760 | op.soc = 0; | |
761 | op.eom = 0; | |
762 | op.init = 1; | |
763 | while (src.sg_wa.bytes_left) { | |
764 | ccp_prepare_data(&src, &dst, &op, AES_BLOCK_SIZE, true); | |
765 | if (!src.sg_wa.bytes_left) { | |
766 | unsigned int nbytes = aes->src_len | |
767 | % AES_BLOCK_SIZE; | |
768 | ||
769 | if (nbytes) { | |
770 | op.eom = 1; | |
771 | op.u.aes.size = (nbytes * 8) - 1; | |
772 | } | |
773 | } | |
774 | ||
775 | ret = cmd_q->ccp->vdata->perform->aes(&op); | |
776 | if (ret) { | |
777 | cmd->engine_error = cmd_q->cmd_error; | |
778 | goto e_dst; | |
779 | } | |
780 | ||
781 | ccp_process_data(&src, &dst, &op); | |
782 | op.init = 0; | |
783 | } | |
784 | } | |
785 | ||
786 | /* Step 3: Update the IV portion of the context with the original IV */ | |
787 | ret = ccp_copy_from_sb(cmd_q, &ctx, op.jobid, op.sb_ctx, | |
788 | CCP_PASSTHRU_BYTESWAP_256BIT); | |
789 | if (ret) { | |
790 | cmd->engine_error = cmd_q->cmd_error; | |
791 | goto e_dst; | |
792 | } | |
793 | ||
b698a9f4 GH |
794 | ret = ccp_set_dm_area(&ctx, dm_offset, aes->iv, 0, aes->iv_len); |
795 | if (ret) | |
796 | goto e_dst; | |
36cf515b GH |
797 | |
798 | ret = ccp_copy_to_sb(cmd_q, &ctx, op.jobid, op.sb_ctx, | |
799 | CCP_PASSTHRU_BYTESWAP_256BIT); | |
800 | if (ret) { | |
801 | cmd->engine_error = cmd_q->cmd_error; | |
802 | goto e_dst; | |
803 | } | |
804 | ||
805 | /* Step 4: Concatenate the lengths of the AAD and source, and | |
806 | * hash that 16 byte buffer. | |
807 | */ | |
808 | ret = ccp_init_dm_workarea(&final_wa, cmd_q, AES_BLOCK_SIZE, | |
809 | DMA_BIDIRECTIONAL); | |
810 | if (ret) | |
811 | goto e_dst; | |
812 | final = (unsigned long long *) final_wa.address; | |
813 | final[0] = cpu_to_be64(aes->aad_len * 8); | |
814 | final[1] = cpu_to_be64(ilen * 8); | |
815 | ||
816 | op.u.aes.mode = CCP_AES_MODE_GHASH; | |
817 | op.u.aes.action = CCP_AES_GHASHFINAL; | |
818 | op.src.type = CCP_MEMTYPE_SYSTEM; | |
819 | op.src.u.dma.address = final_wa.dma.address; | |
820 | op.src.u.dma.length = AES_BLOCK_SIZE; | |
821 | op.dst.type = CCP_MEMTYPE_SYSTEM; | |
822 | op.dst.u.dma.address = final_wa.dma.address; | |
823 | op.dst.u.dma.length = AES_BLOCK_SIZE; | |
824 | op.eom = 1; | |
825 | op.u.aes.size = 0; | |
826 | ret = cmd_q->ccp->vdata->perform->aes(&op); | |
827 | if (ret) | |
828 | goto e_dst; | |
829 | ||
830 | if (aes->action == CCP_AES_ACTION_ENCRYPT) { | |
831 | /* Put the ciphered tag after the ciphertext. */ | |
832 | ccp_get_dm_area(&final_wa, 0, p_tag, 0, AES_BLOCK_SIZE); | |
833 | } else { | |
834 | /* Does this ciphered tag match the input? */ | |
835 | ret = ccp_init_dm_workarea(&tag, cmd_q, AES_BLOCK_SIZE, | |
836 | DMA_BIDIRECTIONAL); | |
837 | if (ret) | |
838 | goto e_tag; | |
b698a9f4 GH |
839 | ret = ccp_set_dm_area(&tag, 0, p_tag, 0, AES_BLOCK_SIZE); |
840 | if (ret) | |
841 | goto e_tag; | |
36cf515b GH |
842 | |
843 | ret = memcmp(tag.address, final_wa.address, AES_BLOCK_SIZE); | |
844 | ccp_dm_free(&tag); | |
845 | } | |
846 | ||
847 | e_tag: | |
848 | ccp_dm_free(&final_wa); | |
849 | ||
850 | e_dst: | |
851 | if (aes->src_len && !in_place) | |
852 | ccp_free_data(&dst, cmd_q); | |
853 | ||
854 | e_src: | |
855 | if (aes->src_len) | |
856 | ccp_free_data(&src, cmd_q); | |
857 | ||
858 | e_aad: | |
859 | if (aes->aad_len) | |
860 | ccp_free_data(&aad, cmd_q); | |
861 | ||
862 | e_ctx: | |
863 | ccp_dm_free(&ctx); | |
864 | ||
865 | e_key: | |
866 | ccp_dm_free(&key); | |
867 | ||
868 | return ret; | |
869 | } | |
870 | ||
63b94509 TL |
871 | static int ccp_run_aes_cmd(struct ccp_cmd_queue *cmd_q, struct ccp_cmd *cmd) |
872 | { | |
873 | struct ccp_aes_engine *aes = &cmd->u.aes; | |
874 | struct ccp_dm_workarea key, ctx; | |
875 | struct ccp_data src, dst; | |
876 | struct ccp_op op; | |
877 | unsigned int dm_offset; | |
878 | bool in_place = false; | |
879 | int ret; | |
880 | ||
881 | if (aes->mode == CCP_AES_MODE_CMAC) | |
882 | return ccp_run_aes_cmac_cmd(cmd_q, cmd); | |
883 | ||
36cf515b GH |
884 | if (aes->mode == CCP_AES_MODE_GCM) |
885 | return ccp_run_aes_gcm_cmd(cmd_q, cmd); | |
886 | ||
63b94509 TL |
887 | if (!((aes->key_len == AES_KEYSIZE_128) || |
888 | (aes->key_len == AES_KEYSIZE_192) || | |
889 | (aes->key_len == AES_KEYSIZE_256))) | |
890 | return -EINVAL; | |
891 | ||
892 | if (((aes->mode == CCP_AES_MODE_ECB) || | |
893 | (aes->mode == CCP_AES_MODE_CBC) || | |
894 | (aes->mode == CCP_AES_MODE_CFB)) && | |
895 | (aes->src_len & (AES_BLOCK_SIZE - 1))) | |
896 | return -EINVAL; | |
897 | ||
898 | if (!aes->key || !aes->src || !aes->dst) | |
899 | return -EINVAL; | |
900 | ||
901 | if (aes->mode != CCP_AES_MODE_ECB) { | |
902 | if (aes->iv_len != AES_BLOCK_SIZE) | |
903 | return -EINVAL; | |
904 | ||
905 | if (!aes->iv) | |
906 | return -EINVAL; | |
907 | } | |
908 | ||
956ee21a GH |
909 | BUILD_BUG_ON(CCP_AES_KEY_SB_COUNT != 1); |
910 | BUILD_BUG_ON(CCP_AES_CTX_SB_COUNT != 1); | |
63b94509 TL |
911 | |
912 | ret = -EIO; | |
913 | memset(&op, 0, sizeof(op)); | |
914 | op.cmd_q = cmd_q; | |
4b394a23 | 915 | op.jobid = CCP_NEW_JOBID(cmd_q->ccp); |
956ee21a GH |
916 | op.sb_key = cmd_q->sb_key; |
917 | op.sb_ctx = cmd_q->sb_ctx; | |
63b94509 TL |
918 | op.init = (aes->mode == CCP_AES_MODE_ECB) ? 0 : 1; |
919 | op.u.aes.type = aes->type; | |
920 | op.u.aes.mode = aes->mode; | |
921 | op.u.aes.action = aes->action; | |
922 | ||
956ee21a | 923 | /* All supported key sizes fit in a single (32-byte) SB entry |
63b94509 TL |
924 | * and must be in little endian format. Use the 256-bit byte |
925 | * swap passthru option to convert from big endian to little | |
926 | * endian. | |
927 | */ | |
928 | ret = ccp_init_dm_workarea(&key, cmd_q, | |
956ee21a | 929 | CCP_AES_KEY_SB_COUNT * CCP_SB_BYTES, |
63b94509 TL |
930 | DMA_TO_DEVICE); |
931 | if (ret) | |
932 | return ret; | |
933 | ||
956ee21a | 934 | dm_offset = CCP_SB_BYTES - aes->key_len; |
b698a9f4 GH |
935 | ret = ccp_set_dm_area(&key, dm_offset, aes->key, 0, aes->key_len); |
936 | if (ret) | |
937 | goto e_key; | |
956ee21a GH |
938 | ret = ccp_copy_to_sb(cmd_q, &key, op.jobid, op.sb_key, |
939 | CCP_PASSTHRU_BYTESWAP_256BIT); | |
63b94509 TL |
940 | if (ret) { |
941 | cmd->engine_error = cmd_q->cmd_error; | |
942 | goto e_key; | |
943 | } | |
944 | ||
956ee21a | 945 | /* The AES context fits in a single (32-byte) SB entry and |
63b94509 TL |
946 | * must be in little endian format. Use the 256-bit byte swap |
947 | * passthru option to convert from big endian to little endian. | |
948 | */ | |
949 | ret = ccp_init_dm_workarea(&ctx, cmd_q, | |
956ee21a | 950 | CCP_AES_CTX_SB_COUNT * CCP_SB_BYTES, |
63b94509 TL |
951 | DMA_BIDIRECTIONAL); |
952 | if (ret) | |
953 | goto e_key; | |
954 | ||
955 | if (aes->mode != CCP_AES_MODE_ECB) { | |
4b394a23 | 956 | /* Load the AES context - convert to LE */ |
956ee21a | 957 | dm_offset = CCP_SB_BYTES - AES_BLOCK_SIZE; |
b698a9f4 GH |
958 | ret = ccp_set_dm_area(&ctx, dm_offset, aes->iv, 0, aes->iv_len); |
959 | if (ret) | |
960 | goto e_ctx; | |
956ee21a GH |
961 | ret = ccp_copy_to_sb(cmd_q, &ctx, op.jobid, op.sb_ctx, |
962 | CCP_PASSTHRU_BYTESWAP_256BIT); | |
63b94509 TL |
963 | if (ret) { |
964 | cmd->engine_error = cmd_q->cmd_error; | |
965 | goto e_ctx; | |
966 | } | |
967 | } | |
f7cc02b3 GH |
968 | switch (aes->mode) { |
969 | case CCP_AES_MODE_CFB: /* CFB128 only */ | |
970 | case CCP_AES_MODE_CTR: | |
971 | op.u.aes.size = AES_BLOCK_SIZE * BITS_PER_BYTE - 1; | |
972 | break; | |
973 | default: | |
974 | op.u.aes.size = 0; | |
975 | } | |
63b94509 TL |
976 | |
977 | /* Prepare the input and output data workareas. For in-place | |
978 | * operations we need to set the dma direction to BIDIRECTIONAL | |
979 | * and copy the src workarea to the dst workarea. | |
980 | */ | |
981 | if (sg_virt(aes->src) == sg_virt(aes->dst)) | |
982 | in_place = true; | |
983 | ||
984 | ret = ccp_init_data(&src, cmd_q, aes->src, aes->src_len, | |
985 | AES_BLOCK_SIZE, | |
986 | in_place ? DMA_BIDIRECTIONAL : DMA_TO_DEVICE); | |
987 | if (ret) | |
988 | goto e_ctx; | |
989 | ||
8db88467 | 990 | if (in_place) { |
63b94509 | 991 | dst = src; |
8db88467 | 992 | } else { |
63b94509 TL |
993 | ret = ccp_init_data(&dst, cmd_q, aes->dst, aes->src_len, |
994 | AES_BLOCK_SIZE, DMA_FROM_DEVICE); | |
995 | if (ret) | |
996 | goto e_src; | |
997 | } | |
998 | ||
999 | /* Send data to the CCP AES engine */ | |
1000 | while (src.sg_wa.bytes_left) { | |
1001 | ccp_prepare_data(&src, &dst, &op, AES_BLOCK_SIZE, true); | |
1002 | if (!src.sg_wa.bytes_left) { | |
1003 | op.eom = 1; | |
1004 | ||
1005 | /* Since we don't retrieve the AES context in ECB | |
1006 | * mode we have to wait for the operation to complete | |
1007 | * on the last piece of data | |
1008 | */ | |
1009 | if (aes->mode == CCP_AES_MODE_ECB) | |
1010 | op.soc = 1; | |
1011 | } | |
1012 | ||
a43eb985 | 1013 | ret = cmd_q->ccp->vdata->perform->aes(&op); |
63b94509 TL |
1014 | if (ret) { |
1015 | cmd->engine_error = cmd_q->cmd_error; | |
1016 | goto e_dst; | |
1017 | } | |
1018 | ||
1019 | ccp_process_data(&src, &dst, &op); | |
1020 | } | |
1021 | ||
1022 | if (aes->mode != CCP_AES_MODE_ECB) { | |
1023 | /* Retrieve the AES context - convert from LE to BE using | |
1024 | * 32-byte (256-bit) byteswapping | |
1025 | */ | |
956ee21a GH |
1026 | ret = ccp_copy_from_sb(cmd_q, &ctx, op.jobid, op.sb_ctx, |
1027 | CCP_PASSTHRU_BYTESWAP_256BIT); | |
63b94509 TL |
1028 | if (ret) { |
1029 | cmd->engine_error = cmd_q->cmd_error; | |
1030 | goto e_dst; | |
1031 | } | |
1032 | ||
1033 | /* ...but we only need AES_BLOCK_SIZE bytes */ | |
956ee21a | 1034 | dm_offset = CCP_SB_BYTES - AES_BLOCK_SIZE; |
63b94509 TL |
1035 | ccp_get_dm_area(&ctx, dm_offset, aes->iv, 0, aes->iv_len); |
1036 | } | |
1037 | ||
1038 | e_dst: | |
1039 | if (!in_place) | |
1040 | ccp_free_data(&dst, cmd_q); | |
1041 | ||
1042 | e_src: | |
1043 | ccp_free_data(&src, cmd_q); | |
1044 | ||
1045 | e_ctx: | |
1046 | ccp_dm_free(&ctx); | |
1047 | ||
1048 | e_key: | |
1049 | ccp_dm_free(&key); | |
1050 | ||
1051 | return ret; | |
1052 | } | |
1053 | ||
1054 | static int ccp_run_xts_aes_cmd(struct ccp_cmd_queue *cmd_q, | |
1055 | struct ccp_cmd *cmd) | |
1056 | { | |
1057 | struct ccp_xts_aes_engine *xts = &cmd->u.xts; | |
1058 | struct ccp_dm_workarea key, ctx; | |
1059 | struct ccp_data src, dst; | |
1060 | struct ccp_op op; | |
1061 | unsigned int unit_size, dm_offset; | |
1062 | bool in_place = false; | |
e652399e GH |
1063 | unsigned int sb_count; |
1064 | enum ccp_aes_type aestype; | |
63b94509 TL |
1065 | int ret; |
1066 | ||
1067 | switch (xts->unit_size) { | |
1068 | case CCP_XTS_AES_UNIT_SIZE_16: | |
1069 | unit_size = 16; | |
1070 | break; | |
1071 | case CCP_XTS_AES_UNIT_SIZE_512: | |
1072 | unit_size = 512; | |
1073 | break; | |
1074 | case CCP_XTS_AES_UNIT_SIZE_1024: | |
1075 | unit_size = 1024; | |
1076 | break; | |
1077 | case CCP_XTS_AES_UNIT_SIZE_2048: | |
1078 | unit_size = 2048; | |
1079 | break; | |
1080 | case CCP_XTS_AES_UNIT_SIZE_4096: | |
1081 | unit_size = 4096; | |
1082 | break; | |
1083 | ||
1084 | default: | |
1085 | return -EINVAL; | |
1086 | } | |
1087 | ||
e652399e GH |
1088 | if (xts->key_len == AES_KEYSIZE_128) |
1089 | aestype = CCP_AES_TYPE_128; | |
5060ffc9 GH |
1090 | else if (xts->key_len == AES_KEYSIZE_256) |
1091 | aestype = CCP_AES_TYPE_256; | |
e652399e | 1092 | else |
63b94509 TL |
1093 | return -EINVAL; |
1094 | ||
1095 | if (!xts->final && (xts->src_len & (AES_BLOCK_SIZE - 1))) | |
1096 | return -EINVAL; | |
1097 | ||
1098 | if (xts->iv_len != AES_BLOCK_SIZE) | |
1099 | return -EINVAL; | |
1100 | ||
1101 | if (!xts->key || !xts->iv || !xts->src || !xts->dst) | |
1102 | return -EINVAL; | |
1103 | ||
956ee21a GH |
1104 | BUILD_BUG_ON(CCP_XTS_AES_KEY_SB_COUNT != 1); |
1105 | BUILD_BUG_ON(CCP_XTS_AES_CTX_SB_COUNT != 1); | |
63b94509 TL |
1106 | |
1107 | ret = -EIO; | |
1108 | memset(&op, 0, sizeof(op)); | |
1109 | op.cmd_q = cmd_q; | |
4b394a23 | 1110 | op.jobid = CCP_NEW_JOBID(cmd_q->ccp); |
956ee21a GH |
1111 | op.sb_key = cmd_q->sb_key; |
1112 | op.sb_ctx = cmd_q->sb_ctx; | |
63b94509 | 1113 | op.init = 1; |
e652399e | 1114 | op.u.xts.type = aestype; |
63b94509 TL |
1115 | op.u.xts.action = xts->action; |
1116 | op.u.xts.unit_size = xts->unit_size; | |
1117 | ||
e652399e GH |
1118 | /* A version 3 device only supports 128-bit keys, which fits into a |
1119 | * single SB entry. A version 5 device uses a 512-bit vector, so two | |
1120 | * SB entries. | |
63b94509 | 1121 | */ |
e652399e GH |
1122 | if (cmd_q->ccp->vdata->version == CCP_VERSION(3, 0)) |
1123 | sb_count = CCP_XTS_AES_KEY_SB_COUNT; | |
1124 | else | |
1125 | sb_count = CCP5_XTS_AES_KEY_SB_COUNT; | |
63b94509 | 1126 | ret = ccp_init_dm_workarea(&key, cmd_q, |
e652399e | 1127 | sb_count * CCP_SB_BYTES, |
63b94509 TL |
1128 | DMA_TO_DEVICE); |
1129 | if (ret) | |
1130 | return ret; | |
1131 | ||
e652399e GH |
1132 | if (cmd_q->ccp->vdata->version == CCP_VERSION(3, 0)) { |
1133 | /* All supported key sizes must be in little endian format. | |
1134 | * Use the 256-bit byte swap passthru option to convert from | |
1135 | * big endian to little endian. | |
1136 | */ | |
1137 | dm_offset = CCP_SB_BYTES - AES_KEYSIZE_128; | |
b698a9f4 GH |
1138 | ret = ccp_set_dm_area(&key, dm_offset, xts->key, 0, xts->key_len); |
1139 | if (ret) | |
1140 | goto e_key; | |
1141 | ret = ccp_set_dm_area(&key, 0, xts->key, xts->key_len, xts->key_len); | |
1142 | if (ret) | |
1143 | goto e_key; | |
e652399e GH |
1144 | } else { |
1145 | /* Version 5 CCPs use a 512-bit space for the key: each portion | |
1146 | * occupies 256 bits, or one entire slot, and is zero-padded. | |
1147 | */ | |
1148 | unsigned int pad; | |
1149 | ||
1150 | dm_offset = CCP_SB_BYTES; | |
1151 | pad = dm_offset - xts->key_len; | |
b698a9f4 GH |
1152 | ret = ccp_set_dm_area(&key, pad, xts->key, 0, xts->key_len); |
1153 | if (ret) | |
1154 | goto e_key; | |
1155 | ret = ccp_set_dm_area(&key, dm_offset + pad, xts->key, | |
1156 | xts->key_len, xts->key_len); | |
1157 | if (ret) | |
1158 | goto e_key; | |
e652399e | 1159 | } |
956ee21a GH |
1160 | ret = ccp_copy_to_sb(cmd_q, &key, op.jobid, op.sb_key, |
1161 | CCP_PASSTHRU_BYTESWAP_256BIT); | |
63b94509 TL |
1162 | if (ret) { |
1163 | cmd->engine_error = cmd_q->cmd_error; | |
1164 | goto e_key; | |
1165 | } | |
1166 | ||
956ee21a | 1167 | /* The AES context fits in a single (32-byte) SB entry and |
63b94509 TL |
1168 | * for XTS is already in little endian format so no byte swapping |
1169 | * is needed. | |
1170 | */ | |
1171 | ret = ccp_init_dm_workarea(&ctx, cmd_q, | |
956ee21a | 1172 | CCP_XTS_AES_CTX_SB_COUNT * CCP_SB_BYTES, |
63b94509 TL |
1173 | DMA_BIDIRECTIONAL); |
1174 | if (ret) | |
1175 | goto e_key; | |
1176 | ||
b698a9f4 GH |
1177 | ret = ccp_set_dm_area(&ctx, 0, xts->iv, 0, xts->iv_len); |
1178 | if (ret) | |
1179 | goto e_ctx; | |
956ee21a GH |
1180 | ret = ccp_copy_to_sb(cmd_q, &ctx, op.jobid, op.sb_ctx, |
1181 | CCP_PASSTHRU_BYTESWAP_NOOP); | |
63b94509 TL |
1182 | if (ret) { |
1183 | cmd->engine_error = cmd_q->cmd_error; | |
1184 | goto e_ctx; | |
1185 | } | |
1186 | ||
1187 | /* Prepare the input and output data workareas. For in-place | |
1188 | * operations we need to set the dma direction to BIDIRECTIONAL | |
1189 | * and copy the src workarea to the dst workarea. | |
1190 | */ | |
1191 | if (sg_virt(xts->src) == sg_virt(xts->dst)) | |
1192 | in_place = true; | |
1193 | ||
1194 | ret = ccp_init_data(&src, cmd_q, xts->src, xts->src_len, | |
1195 | unit_size, | |
1196 | in_place ? DMA_BIDIRECTIONAL : DMA_TO_DEVICE); | |
1197 | if (ret) | |
1198 | goto e_ctx; | |
1199 | ||
8db88467 | 1200 | if (in_place) { |
63b94509 | 1201 | dst = src; |
8db88467 | 1202 | } else { |
63b94509 TL |
1203 | ret = ccp_init_data(&dst, cmd_q, xts->dst, xts->src_len, |
1204 | unit_size, DMA_FROM_DEVICE); | |
1205 | if (ret) | |
1206 | goto e_src; | |
1207 | } | |
1208 | ||
1209 | /* Send data to the CCP AES engine */ | |
1210 | while (src.sg_wa.bytes_left) { | |
1211 | ccp_prepare_data(&src, &dst, &op, unit_size, true); | |
1212 | if (!src.sg_wa.bytes_left) | |
1213 | op.eom = 1; | |
1214 | ||
a43eb985 | 1215 | ret = cmd_q->ccp->vdata->perform->xts_aes(&op); |
63b94509 TL |
1216 | if (ret) { |
1217 | cmd->engine_error = cmd_q->cmd_error; | |
1218 | goto e_dst; | |
1219 | } | |
1220 | ||
1221 | ccp_process_data(&src, &dst, &op); | |
1222 | } | |
1223 | ||
1224 | /* Retrieve the AES context - convert from LE to BE using | |
1225 | * 32-byte (256-bit) byteswapping | |
1226 | */ | |
956ee21a GH |
1227 | ret = ccp_copy_from_sb(cmd_q, &ctx, op.jobid, op.sb_ctx, |
1228 | CCP_PASSTHRU_BYTESWAP_256BIT); | |
63b94509 TL |
1229 | if (ret) { |
1230 | cmd->engine_error = cmd_q->cmd_error; | |
1231 | goto e_dst; | |
1232 | } | |
1233 | ||
1234 | /* ...but we only need AES_BLOCK_SIZE bytes */ | |
956ee21a | 1235 | dm_offset = CCP_SB_BYTES - AES_BLOCK_SIZE; |
63b94509 TL |
1236 | ccp_get_dm_area(&ctx, dm_offset, xts->iv, 0, xts->iv_len); |
1237 | ||
1238 | e_dst: | |
1239 | if (!in_place) | |
1240 | ccp_free_data(&dst, cmd_q); | |
1241 | ||
1242 | e_src: | |
1243 | ccp_free_data(&src, cmd_q); | |
1244 | ||
1245 | e_ctx: | |
1246 | ccp_dm_free(&ctx); | |
1247 | ||
1248 | e_key: | |
1249 | ccp_dm_free(&key); | |
1250 | ||
1251 | return ret; | |
1252 | } | |
1253 | ||
990672d4 GH |
1254 | static int ccp_run_des3_cmd(struct ccp_cmd_queue *cmd_q, struct ccp_cmd *cmd) |
1255 | { | |
1256 | struct ccp_des3_engine *des3 = &cmd->u.des3; | |
1257 | ||
1258 | struct ccp_dm_workarea key, ctx; | |
1259 | struct ccp_data src, dst; | |
1260 | struct ccp_op op; | |
1261 | unsigned int dm_offset; | |
1262 | unsigned int len_singlekey; | |
1263 | bool in_place = false; | |
1264 | int ret; | |
1265 | ||
1266 | /* Error checks */ | |
1267 | if (!cmd_q->ccp->vdata->perform->des3) | |
1268 | return -EINVAL; | |
1269 | ||
1270 | if (des3->key_len != DES3_EDE_KEY_SIZE) | |
1271 | return -EINVAL; | |
1272 | ||
1273 | if (((des3->mode == CCP_DES3_MODE_ECB) || | |
1274 | (des3->mode == CCP_DES3_MODE_CBC)) && | |
1275 | (des3->src_len & (DES3_EDE_BLOCK_SIZE - 1))) | |
1276 | return -EINVAL; | |
1277 | ||
1278 | if (!des3->key || !des3->src || !des3->dst) | |
1279 | return -EINVAL; | |
1280 | ||
1281 | if (des3->mode != CCP_DES3_MODE_ECB) { | |
1282 | if (des3->iv_len != DES3_EDE_BLOCK_SIZE) | |
1283 | return -EINVAL; | |
1284 | ||
1285 | if (!des3->iv) | |
1286 | return -EINVAL; | |
1287 | } | |
1288 | ||
1289 | ret = -EIO; | |
1290 | /* Zero out all the fields of the command desc */ | |
1291 | memset(&op, 0, sizeof(op)); | |
1292 | ||
1293 | /* Set up the Function field */ | |
1294 | op.cmd_q = cmd_q; | |
1295 | op.jobid = CCP_NEW_JOBID(cmd_q->ccp); | |
1296 | op.sb_key = cmd_q->sb_key; | |
1297 | ||
1298 | op.init = (des3->mode == CCP_DES3_MODE_ECB) ? 0 : 1; | |
1299 | op.u.des3.type = des3->type; | |
1300 | op.u.des3.mode = des3->mode; | |
1301 | op.u.des3.action = des3->action; | |
1302 | ||
1303 | /* | |
1304 | * All supported key sizes fit in a single (32-byte) KSB entry and | |
1305 | * (like AES) must be in little endian format. Use the 256-bit byte | |
1306 | * swap passthru option to convert from big endian to little endian. | |
1307 | */ | |
1308 | ret = ccp_init_dm_workarea(&key, cmd_q, | |
1309 | CCP_DES3_KEY_SB_COUNT * CCP_SB_BYTES, | |
1310 | DMA_TO_DEVICE); | |
1311 | if (ret) | |
1312 | return ret; | |
1313 | ||
1314 | /* | |
1315 | * The contents of the key triplet are in the reverse order of what | |
1316 | * is required by the engine. Copy the 3 pieces individually to put | |
1317 | * them where they belong. | |
1318 | */ | |
1319 | dm_offset = CCP_SB_BYTES - des3->key_len; /* Basic offset */ | |
1320 | ||
1321 | len_singlekey = des3->key_len / 3; | |
b698a9f4 GH |
1322 | ret = ccp_set_dm_area(&key, dm_offset + 2 * len_singlekey, |
1323 | des3->key, 0, len_singlekey); | |
1324 | if (ret) | |
1325 | goto e_key; | |
1326 | ret = ccp_set_dm_area(&key, dm_offset + len_singlekey, | |
1327 | des3->key, len_singlekey, len_singlekey); | |
1328 | if (ret) | |
1329 | goto e_key; | |
1330 | ret = ccp_set_dm_area(&key, dm_offset, | |
1331 | des3->key, 2 * len_singlekey, len_singlekey); | |
1332 | if (ret) | |
1333 | goto e_key; | |
990672d4 GH |
1334 | |
1335 | /* Copy the key to the SB */ | |
1336 | ret = ccp_copy_to_sb(cmd_q, &key, op.jobid, op.sb_key, | |
1337 | CCP_PASSTHRU_BYTESWAP_256BIT); | |
1338 | if (ret) { | |
1339 | cmd->engine_error = cmd_q->cmd_error; | |
1340 | goto e_key; | |
1341 | } | |
1342 | ||
1343 | /* | |
1344 | * The DES3 context fits in a single (32-byte) KSB entry and | |
1345 | * must be in little endian format. Use the 256-bit byte swap | |
1346 | * passthru option to convert from big endian to little endian. | |
1347 | */ | |
1348 | if (des3->mode != CCP_DES3_MODE_ECB) { | |
1349 | u32 load_mode; | |
1350 | ||
1351 | op.sb_ctx = cmd_q->sb_ctx; | |
1352 | ||
1353 | ret = ccp_init_dm_workarea(&ctx, cmd_q, | |
1354 | CCP_DES3_CTX_SB_COUNT * CCP_SB_BYTES, | |
1355 | DMA_BIDIRECTIONAL); | |
1356 | if (ret) | |
1357 | goto e_key; | |
1358 | ||
1359 | /* Load the context into the LSB */ | |
1360 | dm_offset = CCP_SB_BYTES - des3->iv_len; | |
b698a9f4 GH |
1361 | ret = ccp_set_dm_area(&ctx, dm_offset, des3->iv, 0, |
1362 | des3->iv_len); | |
1363 | if (ret) | |
1364 | goto e_ctx; | |
990672d4 GH |
1365 | |
1366 | if (cmd_q->ccp->vdata->version == CCP_VERSION(3, 0)) | |
1367 | load_mode = CCP_PASSTHRU_BYTESWAP_NOOP; | |
1368 | else | |
1369 | load_mode = CCP_PASSTHRU_BYTESWAP_256BIT; | |
1370 | ret = ccp_copy_to_sb(cmd_q, &ctx, op.jobid, op.sb_ctx, | |
1371 | load_mode); | |
1372 | if (ret) { | |
1373 | cmd->engine_error = cmd_q->cmd_error; | |
1374 | goto e_ctx; | |
1375 | } | |
1376 | } | |
1377 | ||
1378 | /* | |
1379 | * Prepare the input and output data workareas. For in-place | |
1380 | * operations we need to set the dma direction to BIDIRECTIONAL | |
1381 | * and copy the src workarea to the dst workarea. | |
1382 | */ | |
1383 | if (sg_virt(des3->src) == sg_virt(des3->dst)) | |
1384 | in_place = true; | |
1385 | ||
1386 | ret = ccp_init_data(&src, cmd_q, des3->src, des3->src_len, | |
1387 | DES3_EDE_BLOCK_SIZE, | |
1388 | in_place ? DMA_BIDIRECTIONAL : DMA_TO_DEVICE); | |
1389 | if (ret) | |
1390 | goto e_ctx; | |
1391 | ||
1392 | if (in_place) | |
1393 | dst = src; | |
1394 | else { | |
1395 | ret = ccp_init_data(&dst, cmd_q, des3->dst, des3->src_len, | |
1396 | DES3_EDE_BLOCK_SIZE, DMA_FROM_DEVICE); | |
1397 | if (ret) | |
1398 | goto e_src; | |
1399 | } | |
1400 | ||
1401 | /* Send data to the CCP DES3 engine */ | |
1402 | while (src.sg_wa.bytes_left) { | |
1403 | ccp_prepare_data(&src, &dst, &op, DES3_EDE_BLOCK_SIZE, true); | |
1404 | if (!src.sg_wa.bytes_left) { | |
1405 | op.eom = 1; | |
1406 | ||
1407 | /* Since we don't retrieve the context in ECB mode | |
1408 | * we have to wait for the operation to complete | |
1409 | * on the last piece of data | |
1410 | */ | |
1411 | op.soc = 0; | |
1412 | } | |
1413 | ||
1414 | ret = cmd_q->ccp->vdata->perform->des3(&op); | |
1415 | if (ret) { | |
1416 | cmd->engine_error = cmd_q->cmd_error; | |
1417 | goto e_dst; | |
1418 | } | |
1419 | ||
1420 | ccp_process_data(&src, &dst, &op); | |
1421 | } | |
1422 | ||
1423 | if (des3->mode != CCP_DES3_MODE_ECB) { | |
1424 | /* Retrieve the context and make BE */ | |
1425 | ret = ccp_copy_from_sb(cmd_q, &ctx, op.jobid, op.sb_ctx, | |
1426 | CCP_PASSTHRU_BYTESWAP_256BIT); | |
1427 | if (ret) { | |
1428 | cmd->engine_error = cmd_q->cmd_error; | |
1429 | goto e_dst; | |
1430 | } | |
1431 | ||
1432 | /* ...but we only need the last DES3_EDE_BLOCK_SIZE bytes */ | |
1433 | if (cmd_q->ccp->vdata->version == CCP_VERSION(3, 0)) | |
1434 | dm_offset = CCP_SB_BYTES - des3->iv_len; | |
1435 | else | |
1436 | dm_offset = 0; | |
1437 | ccp_get_dm_area(&ctx, dm_offset, des3->iv, 0, | |
1438 | DES3_EDE_BLOCK_SIZE); | |
1439 | } | |
1440 | e_dst: | |
1441 | if (!in_place) | |
1442 | ccp_free_data(&dst, cmd_q); | |
1443 | ||
1444 | e_src: | |
1445 | ccp_free_data(&src, cmd_q); | |
1446 | ||
1447 | e_ctx: | |
1448 | if (des3->mode != CCP_DES3_MODE_ECB) | |
1449 | ccp_dm_free(&ctx); | |
1450 | ||
1451 | e_key: | |
1452 | ccp_dm_free(&key); | |
1453 | ||
1454 | return ret; | |
1455 | } | |
1456 | ||
63b94509 TL |
1457 | static int ccp_run_sha_cmd(struct ccp_cmd_queue *cmd_q, struct ccp_cmd *cmd) |
1458 | { | |
1459 | struct ccp_sha_engine *sha = &cmd->u.sha; | |
1460 | struct ccp_dm_workarea ctx; | |
1461 | struct ccp_data src; | |
1462 | struct ccp_op op; | |
4b394a23 GH |
1463 | unsigned int ioffset, ooffset; |
1464 | unsigned int digest_size; | |
1465 | int sb_count; | |
1466 | const void *init; | |
1467 | u64 block_size; | |
1468 | int ctx_size; | |
63b94509 TL |
1469 | int ret; |
1470 | ||
4b394a23 GH |
1471 | switch (sha->type) { |
1472 | case CCP_SHA_TYPE_1: | |
1473 | if (sha->ctx_len < SHA1_DIGEST_SIZE) | |
1474 | return -EINVAL; | |
1475 | block_size = SHA1_BLOCK_SIZE; | |
1476 | break; | |
1477 | case CCP_SHA_TYPE_224: | |
1478 | if (sha->ctx_len < SHA224_DIGEST_SIZE) | |
1479 | return -EINVAL; | |
1480 | block_size = SHA224_BLOCK_SIZE; | |
1481 | break; | |
1482 | case CCP_SHA_TYPE_256: | |
1483 | if (sha->ctx_len < SHA256_DIGEST_SIZE) | |
1484 | return -EINVAL; | |
1485 | block_size = SHA256_BLOCK_SIZE; | |
1486 | break; | |
ccebcf3f GH |
1487 | case CCP_SHA_TYPE_384: |
1488 | if (cmd_q->ccp->vdata->version < CCP_VERSION(4, 0) | |
1489 | || sha->ctx_len < SHA384_DIGEST_SIZE) | |
1490 | return -EINVAL; | |
1491 | block_size = SHA384_BLOCK_SIZE; | |
1492 | break; | |
1493 | case CCP_SHA_TYPE_512: | |
1494 | if (cmd_q->ccp->vdata->version < CCP_VERSION(4, 0) | |
1495 | || sha->ctx_len < SHA512_DIGEST_SIZE) | |
1496 | return -EINVAL; | |
1497 | block_size = SHA512_BLOCK_SIZE; | |
1498 | break; | |
4b394a23 | 1499 | default: |
63b94509 | 1500 | return -EINVAL; |
4b394a23 | 1501 | } |
63b94509 TL |
1502 | |
1503 | if (!sha->ctx) | |
1504 | return -EINVAL; | |
1505 | ||
4b394a23 | 1506 | if (!sha->final && (sha->src_len & (block_size - 1))) |
63b94509 TL |
1507 | return -EINVAL; |
1508 | ||
4b394a23 GH |
1509 | /* The version 3 device can't handle zero-length input */ |
1510 | if (cmd_q->ccp->vdata->version == CCP_VERSION(3, 0)) { | |
63b94509 | 1511 | |
4b394a23 GH |
1512 | if (!sha->src_len) { |
1513 | unsigned int digest_len; | |
1514 | const u8 *sha_zero; | |
63b94509 | 1515 | |
4b394a23 GH |
1516 | /* Not final, just return */ |
1517 | if (!sha->final) | |
1518 | return 0; | |
63b94509 | 1519 | |
4b394a23 GH |
1520 | /* CCP can't do a zero length sha operation so the |
1521 | * caller must buffer the data. | |
1522 | */ | |
1523 | if (sha->msg_bits) | |
1524 | return -EINVAL; | |
63b94509 | 1525 | |
4b394a23 GH |
1526 | /* The CCP cannot perform zero-length sha operations |
1527 | * so the caller is required to buffer data for the | |
1528 | * final operation. However, a sha operation for a | |
1529 | * message with a total length of zero is valid so | |
1530 | * known values are required to supply the result. | |
1531 | */ | |
1532 | switch (sha->type) { | |
1533 | case CCP_SHA_TYPE_1: | |
1534 | sha_zero = sha1_zero_message_hash; | |
1535 | digest_len = SHA1_DIGEST_SIZE; | |
1536 | break; | |
1537 | case CCP_SHA_TYPE_224: | |
1538 | sha_zero = sha224_zero_message_hash; | |
1539 | digest_len = SHA224_DIGEST_SIZE; | |
1540 | break; | |
1541 | case CCP_SHA_TYPE_256: | |
1542 | sha_zero = sha256_zero_message_hash; | |
1543 | digest_len = SHA256_DIGEST_SIZE; | |
1544 | break; | |
1545 | default: | |
1546 | return -EINVAL; | |
1547 | } | |
63b94509 | 1548 | |
4b394a23 GH |
1549 | scatterwalk_map_and_copy((void *)sha_zero, sha->ctx, 0, |
1550 | digest_len, 1); | |
1551 | ||
1552 | return 0; | |
1553 | } | |
63b94509 TL |
1554 | } |
1555 | ||
4b394a23 GH |
1556 | /* Set variables used throughout */ |
1557 | switch (sha->type) { | |
1558 | case CCP_SHA_TYPE_1: | |
1559 | digest_size = SHA1_DIGEST_SIZE; | |
1560 | init = (void *) ccp_sha1_init; | |
1561 | ctx_size = SHA1_DIGEST_SIZE; | |
1562 | sb_count = 1; | |
1563 | if (cmd_q->ccp->vdata->version != CCP_VERSION(3, 0)) | |
1564 | ooffset = ioffset = CCP_SB_BYTES - SHA1_DIGEST_SIZE; | |
1565 | else | |
1566 | ooffset = ioffset = 0; | |
1567 | break; | |
1568 | case CCP_SHA_TYPE_224: | |
1569 | digest_size = SHA224_DIGEST_SIZE; | |
1570 | init = (void *) ccp_sha224_init; | |
1571 | ctx_size = SHA256_DIGEST_SIZE; | |
1572 | sb_count = 1; | |
1573 | ioffset = 0; | |
1574 | if (cmd_q->ccp->vdata->version != CCP_VERSION(3, 0)) | |
1575 | ooffset = CCP_SB_BYTES - SHA224_DIGEST_SIZE; | |
1576 | else | |
1577 | ooffset = 0; | |
1578 | break; | |
1579 | case CCP_SHA_TYPE_256: | |
1580 | digest_size = SHA256_DIGEST_SIZE; | |
1581 | init = (void *) ccp_sha256_init; | |
1582 | ctx_size = SHA256_DIGEST_SIZE; | |
1583 | sb_count = 1; | |
1584 | ooffset = ioffset = 0; | |
1585 | break; | |
ccebcf3f GH |
1586 | case CCP_SHA_TYPE_384: |
1587 | digest_size = SHA384_DIGEST_SIZE; | |
1588 | init = (void *) ccp_sha384_init; | |
1589 | ctx_size = SHA512_DIGEST_SIZE; | |
1590 | sb_count = 2; | |
1591 | ioffset = 0; | |
1592 | ooffset = 2 * CCP_SB_BYTES - SHA384_DIGEST_SIZE; | |
1593 | break; | |
1594 | case CCP_SHA_TYPE_512: | |
1595 | digest_size = SHA512_DIGEST_SIZE; | |
1596 | init = (void *) ccp_sha512_init; | |
1597 | ctx_size = SHA512_DIGEST_SIZE; | |
1598 | sb_count = 2; | |
1599 | ooffset = ioffset = 0; | |
1600 | break; | |
4b394a23 GH |
1601 | default: |
1602 | ret = -EINVAL; | |
1603 | goto e_data; | |
1604 | } | |
63b94509 | 1605 | |
4b394a23 GH |
1606 | /* For zero-length plaintext the src pointer is ignored; |
1607 | * otherwise both parts must be valid | |
1608 | */ | |
1609 | if (sha->src_len && !sha->src) | |
1610 | return -EINVAL; | |
63b94509 TL |
1611 | |
1612 | memset(&op, 0, sizeof(op)); | |
1613 | op.cmd_q = cmd_q; | |
4b394a23 GH |
1614 | op.jobid = CCP_NEW_JOBID(cmd_q->ccp); |
1615 | op.sb_ctx = cmd_q->sb_ctx; /* Pre-allocated */ | |
63b94509 TL |
1616 | op.u.sha.type = sha->type; |
1617 | op.u.sha.msg_bits = sha->msg_bits; | |
1618 | ||
ccebcf3f GH |
1619 | /* For SHA1/224/256 the context fits in a single (32-byte) SB entry; |
1620 | * SHA384/512 require 2 adjacent SB slots, with the right half in the | |
1621 | * first slot, and the left half in the second. Each portion must then | |
1622 | * be in little endian format: use the 256-bit byte swap option. | |
1623 | */ | |
4b394a23 | 1624 | ret = ccp_init_dm_workarea(&ctx, cmd_q, sb_count * CCP_SB_BYTES, |
63b94509 TL |
1625 | DMA_BIDIRECTIONAL); |
1626 | if (ret) | |
1627 | return ret; | |
c11baa02 | 1628 | if (sha->first) { |
c11baa02 TL |
1629 | switch (sha->type) { |
1630 | case CCP_SHA_TYPE_1: | |
c11baa02 | 1631 | case CCP_SHA_TYPE_224: |
c11baa02 | 1632 | case CCP_SHA_TYPE_256: |
4b394a23 | 1633 | memcpy(ctx.address + ioffset, init, ctx_size); |
c11baa02 | 1634 | break; |
ccebcf3f GH |
1635 | case CCP_SHA_TYPE_384: |
1636 | case CCP_SHA_TYPE_512: | |
1637 | memcpy(ctx.address + ctx_size / 2, init, | |
1638 | ctx_size / 2); | |
1639 | memcpy(ctx.address, init + ctx_size / 2, | |
1640 | ctx_size / 2); | |
1641 | break; | |
c11baa02 TL |
1642 | default: |
1643 | ret = -EINVAL; | |
1644 | goto e_ctx; | |
1645 | } | |
8db88467 | 1646 | } else { |
4b394a23 | 1647 | /* Restore the context */ |
b698a9f4 GH |
1648 | ret = ccp_set_dm_area(&ctx, 0, sha->ctx, 0, |
1649 | sb_count * CCP_SB_BYTES); | |
1650 | if (ret) | |
1651 | goto e_ctx; | |
8db88467 | 1652 | } |
c11baa02 | 1653 | |
956ee21a GH |
1654 | ret = ccp_copy_to_sb(cmd_q, &ctx, op.jobid, op.sb_ctx, |
1655 | CCP_PASSTHRU_BYTESWAP_256BIT); | |
63b94509 TL |
1656 | if (ret) { |
1657 | cmd->engine_error = cmd_q->cmd_error; | |
1658 | goto e_ctx; | |
1659 | } | |
1660 | ||
4b394a23 GH |
1661 | if (sha->src) { |
1662 | /* Send data to the CCP SHA engine; block_size is set above */ | |
1663 | ret = ccp_init_data(&src, cmd_q, sha->src, sha->src_len, | |
1664 | block_size, DMA_TO_DEVICE); | |
1665 | if (ret) | |
1666 | goto e_ctx; | |
63b94509 | 1667 | |
4b394a23 GH |
1668 | while (src.sg_wa.bytes_left) { |
1669 | ccp_prepare_data(&src, NULL, &op, block_size, false); | |
1670 | if (sha->final && !src.sg_wa.bytes_left) | |
1671 | op.eom = 1; | |
1672 | ||
1673 | ret = cmd_q->ccp->vdata->perform->sha(&op); | |
1674 | if (ret) { | |
1675 | cmd->engine_error = cmd_q->cmd_error; | |
1676 | goto e_data; | |
1677 | } | |
63b94509 | 1678 | |
4b394a23 GH |
1679 | ccp_process_data(&src, NULL, &op); |
1680 | } | |
1681 | } else { | |
1682 | op.eom = 1; | |
a43eb985 | 1683 | ret = cmd_q->ccp->vdata->perform->sha(&op); |
63b94509 TL |
1684 | if (ret) { |
1685 | cmd->engine_error = cmd_q->cmd_error; | |
1686 | goto e_data; | |
1687 | } | |
63b94509 TL |
1688 | } |
1689 | ||
1690 | /* Retrieve the SHA context - convert from LE to BE using | |
1691 | * 32-byte (256-bit) byteswapping to BE | |
1692 | */ | |
956ee21a GH |
1693 | ret = ccp_copy_from_sb(cmd_q, &ctx, op.jobid, op.sb_ctx, |
1694 | CCP_PASSTHRU_BYTESWAP_256BIT); | |
63b94509 TL |
1695 | if (ret) { |
1696 | cmd->engine_error = cmd_q->cmd_error; | |
1697 | goto e_data; | |
1698 | } | |
1699 | ||
4b394a23 GH |
1700 | if (sha->final) { |
1701 | /* Finishing up, so get the digest */ | |
c11baa02 TL |
1702 | switch (sha->type) { |
1703 | case CCP_SHA_TYPE_1: | |
c11baa02 | 1704 | case CCP_SHA_TYPE_224: |
c11baa02 | 1705 | case CCP_SHA_TYPE_256: |
4b394a23 GH |
1706 | ccp_get_dm_area(&ctx, ooffset, |
1707 | sha->ctx, 0, | |
1708 | digest_size); | |
c11baa02 | 1709 | break; |
ccebcf3f GH |
1710 | case CCP_SHA_TYPE_384: |
1711 | case CCP_SHA_TYPE_512: | |
1712 | ccp_get_dm_area(&ctx, 0, | |
1713 | sha->ctx, LSB_ITEM_SIZE - ooffset, | |
1714 | LSB_ITEM_SIZE); | |
1715 | ccp_get_dm_area(&ctx, LSB_ITEM_SIZE + ooffset, | |
1716 | sha->ctx, 0, | |
1717 | LSB_ITEM_SIZE - ooffset); | |
1718 | break; | |
c11baa02 TL |
1719 | default: |
1720 | ret = -EINVAL; | |
4b394a23 | 1721 | goto e_ctx; |
c11baa02 | 1722 | } |
4b394a23 GH |
1723 | } else { |
1724 | /* Stash the context */ | |
1725 | ccp_get_dm_area(&ctx, 0, sha->ctx, 0, | |
1726 | sb_count * CCP_SB_BYTES); | |
1727 | } | |
1728 | ||
1729 | if (sha->final && sha->opad) { | |
1730 | /* HMAC operation, recursively perform final SHA */ | |
1731 | struct ccp_cmd hmac_cmd; | |
1732 | struct scatterlist sg; | |
1733 | u8 *hmac_buf; | |
c11baa02 TL |
1734 | |
1735 | if (sha->opad_len != block_size) { | |
1736 | ret = -EINVAL; | |
1737 | goto e_data; | |
1738 | } | |
1739 | ||
1740 | hmac_buf = kmalloc(block_size + digest_size, GFP_KERNEL); | |
1741 | if (!hmac_buf) { | |
1742 | ret = -ENOMEM; | |
1743 | goto e_data; | |
1744 | } | |
1745 | sg_init_one(&sg, hmac_buf, block_size + digest_size); | |
1746 | ||
1747 | scatterwalk_map_and_copy(hmac_buf, sha->opad, 0, block_size, 0); | |
4b394a23 GH |
1748 | switch (sha->type) { |
1749 | case CCP_SHA_TYPE_1: | |
1750 | case CCP_SHA_TYPE_224: | |
1751 | case CCP_SHA_TYPE_256: | |
1752 | memcpy(hmac_buf + block_size, | |
1753 | ctx.address + ooffset, | |
1754 | digest_size); | |
1755 | break; | |
ccebcf3f GH |
1756 | case CCP_SHA_TYPE_384: |
1757 | case CCP_SHA_TYPE_512: | |
1758 | memcpy(hmac_buf + block_size, | |
1759 | ctx.address + LSB_ITEM_SIZE + ooffset, | |
1760 | LSB_ITEM_SIZE); | |
1761 | memcpy(hmac_buf + block_size + | |
1762 | (LSB_ITEM_SIZE - ooffset), | |
1763 | ctx.address, | |
1764 | LSB_ITEM_SIZE); | |
1765 | break; | |
4b394a23 GH |
1766 | default: |
1767 | ret = -EINVAL; | |
1768 | goto e_ctx; | |
1769 | } | |
c11baa02 TL |
1770 | |
1771 | memset(&hmac_cmd, 0, sizeof(hmac_cmd)); | |
1772 | hmac_cmd.engine = CCP_ENGINE_SHA; | |
1773 | hmac_cmd.u.sha.type = sha->type; | |
1774 | hmac_cmd.u.sha.ctx = sha->ctx; | |
1775 | hmac_cmd.u.sha.ctx_len = sha->ctx_len; | |
1776 | hmac_cmd.u.sha.src = &sg; | |
1777 | hmac_cmd.u.sha.src_len = block_size + digest_size; | |
1778 | hmac_cmd.u.sha.opad = NULL; | |
1779 | hmac_cmd.u.sha.opad_len = 0; | |
1780 | hmac_cmd.u.sha.first = 1; | |
1781 | hmac_cmd.u.sha.final = 1; | |
1782 | hmac_cmd.u.sha.msg_bits = (block_size + digest_size) << 3; | |
1783 | ||
1784 | ret = ccp_run_sha_cmd(cmd_q, &hmac_cmd); | |
1785 | if (ret) | |
1786 | cmd->engine_error = hmac_cmd.engine_error; | |
1787 | ||
1788 | kfree(hmac_buf); | |
1789 | } | |
1790 | ||
63b94509 | 1791 | e_data: |
4b394a23 GH |
1792 | if (sha->src) |
1793 | ccp_free_data(&src, cmd_q); | |
63b94509 TL |
1794 | |
1795 | e_ctx: | |
1796 | ccp_dm_free(&ctx); | |
1797 | ||
1798 | return ret; | |
1799 | } | |
1800 | ||
1801 | static int ccp_run_rsa_cmd(struct ccp_cmd_queue *cmd_q, struct ccp_cmd *cmd) | |
1802 | { | |
1803 | struct ccp_rsa_engine *rsa = &cmd->u.rsa; | |
6ba46c7d | 1804 | struct ccp_dm_workarea exp, src, dst; |
63b94509 | 1805 | struct ccp_op op; |
956ee21a | 1806 | unsigned int sb_count, i_len, o_len; |
63b94509 TL |
1807 | int ret; |
1808 | ||
e28c190d GH |
1809 | /* Check against the maximum allowable size, in bits */ |
1810 | if (rsa->key_size > cmd_q->ccp->vdata->rsamax) | |
63b94509 TL |
1811 | return -EINVAL; |
1812 | ||
1813 | if (!rsa->exp || !rsa->mod || !rsa->src || !rsa->dst) | |
1814 | return -EINVAL; | |
1815 | ||
6ba46c7d GH |
1816 | memset(&op, 0, sizeof(op)); |
1817 | op.cmd_q = cmd_q; | |
1818 | op.jobid = CCP_NEW_JOBID(cmd_q->ccp); | |
1819 | ||
63b94509 TL |
1820 | /* The RSA modulus must precede the message being acted upon, so |
1821 | * it must be copied to a DMA area where the message and the | |
1822 | * modulus can be concatenated. Therefore the input buffer | |
1823 | * length required is twice the output buffer length (which | |
6ba46c7d GH |
1824 | * must be a multiple of 256-bits). Compute o_len, i_len in bytes. |
1825 | * Buffer sizes must be a multiple of 32 bytes; rounding up may be | |
1826 | * required. | |
63b94509 | 1827 | */ |
6ba46c7d | 1828 | o_len = 32 * ((rsa->key_size + 255) / 256); |
63b94509 TL |
1829 | i_len = o_len * 2; |
1830 | ||
d634baea | 1831 | sb_count = 0; |
6ba46c7d GH |
1832 | if (cmd_q->ccp->vdata->version < CCP_VERSION(5, 0)) { |
1833 | /* sb_count is the number of storage block slots required | |
1834 | * for the modulus. | |
1835 | */ | |
1836 | sb_count = o_len / CCP_SB_BYTES; | |
1837 | op.sb_key = cmd_q->ccp->vdata->perform->sballoc(cmd_q, | |
1838 | sb_count); | |
1839 | if (!op.sb_key) | |
1840 | return -EIO; | |
1841 | } else { | |
1842 | /* A version 5 device allows a modulus size that will not fit | |
1843 | * in the LSB, so the command will transfer it from memory. | |
1844 | * Set the sb key to the default, even though it's not used. | |
1845 | */ | |
1846 | op.sb_key = cmd_q->sb_key; | |
1847 | } | |
63b94509 | 1848 | |
6ba46c7d GH |
1849 | /* The RSA exponent must be in little endian format. Reverse its |
1850 | * byte order. | |
63b94509 TL |
1851 | */ |
1852 | ret = ccp_init_dm_workarea(&exp, cmd_q, o_len, DMA_TO_DEVICE); | |
1853 | if (ret) | |
956ee21a | 1854 | goto e_sb; |
63b94509 | 1855 | |
83d650ab | 1856 | ret = ccp_reverse_set_dm_area(&exp, 0, rsa->exp, 0, rsa->exp_len); |
355eba5d TL |
1857 | if (ret) |
1858 | goto e_exp; | |
6ba46c7d GH |
1859 | |
1860 | if (cmd_q->ccp->vdata->version < CCP_VERSION(5, 0)) { | |
1861 | /* Copy the exponent to the local storage block, using | |
1862 | * as many 32-byte blocks as were allocated above. It's | |
1863 | * already little endian, so no further change is required. | |
1864 | */ | |
1865 | ret = ccp_copy_to_sb(cmd_q, &exp, op.jobid, op.sb_key, | |
1866 | CCP_PASSTHRU_BYTESWAP_NOOP); | |
1867 | if (ret) { | |
1868 | cmd->engine_error = cmd_q->cmd_error; | |
1869 | goto e_exp; | |
1870 | } | |
1871 | } else { | |
1872 | /* The exponent can be retrieved from memory via DMA. */ | |
1873 | op.exp.u.dma.address = exp.dma.address; | |
1874 | op.exp.u.dma.offset = 0; | |
63b94509 TL |
1875 | } |
1876 | ||
1877 | /* Concatenate the modulus and the message. Both the modulus and | |
1878 | * the operands must be in little endian format. Since the input | |
1879 | * is in big endian format it must be converted. | |
1880 | */ | |
1881 | ret = ccp_init_dm_workarea(&src, cmd_q, i_len, DMA_TO_DEVICE); | |
1882 | if (ret) | |
1883 | goto e_exp; | |
1884 | ||
83d650ab | 1885 | ret = ccp_reverse_set_dm_area(&src, 0, rsa->mod, 0, rsa->mod_len); |
355eba5d TL |
1886 | if (ret) |
1887 | goto e_src; | |
83d650ab | 1888 | ret = ccp_reverse_set_dm_area(&src, o_len, rsa->src, 0, rsa->src_len); |
355eba5d TL |
1889 | if (ret) |
1890 | goto e_src; | |
63b94509 TL |
1891 | |
1892 | /* Prepare the output area for the operation */ | |
6ba46c7d | 1893 | ret = ccp_init_dm_workarea(&dst, cmd_q, o_len, DMA_FROM_DEVICE); |
63b94509 TL |
1894 | if (ret) |
1895 | goto e_src; | |
1896 | ||
1897 | op.soc = 1; | |
1898 | op.src.u.dma.address = src.dma.address; | |
1899 | op.src.u.dma.offset = 0; | |
1900 | op.src.u.dma.length = i_len; | |
6ba46c7d | 1901 | op.dst.u.dma.address = dst.dma.address; |
63b94509 TL |
1902 | op.dst.u.dma.offset = 0; |
1903 | op.dst.u.dma.length = o_len; | |
1904 | ||
1905 | op.u.rsa.mod_size = rsa->key_size; | |
1906 | op.u.rsa.input_len = i_len; | |
1907 | ||
a43eb985 | 1908 | ret = cmd_q->ccp->vdata->perform->rsa(&op); |
63b94509 TL |
1909 | if (ret) { |
1910 | cmd->engine_error = cmd_q->cmd_error; | |
1911 | goto e_dst; | |
1912 | } | |
1913 | ||
6ba46c7d | 1914 | ccp_reverse_get_dm_area(&dst, 0, rsa->dst, 0, rsa->mod_len); |
63b94509 TL |
1915 | |
1916 | e_dst: | |
6ba46c7d | 1917 | ccp_dm_free(&dst); |
63b94509 TL |
1918 | |
1919 | e_src: | |
1920 | ccp_dm_free(&src); | |
1921 | ||
1922 | e_exp: | |
1923 | ccp_dm_free(&exp); | |
1924 | ||
956ee21a | 1925 | e_sb: |
d634baea | 1926 | if (sb_count) |
6ba46c7d | 1927 | cmd_q->ccp->vdata->perform->sbfree(cmd_q, op.sb_key, sb_count); |
63b94509 TL |
1928 | |
1929 | return ret; | |
1930 | } | |
1931 | ||
1932 | static int ccp_run_passthru_cmd(struct ccp_cmd_queue *cmd_q, | |
1933 | struct ccp_cmd *cmd) | |
1934 | { | |
1935 | struct ccp_passthru_engine *pt = &cmd->u.passthru; | |
1936 | struct ccp_dm_workarea mask; | |
1937 | struct ccp_data src, dst; | |
1938 | struct ccp_op op; | |
1939 | bool in_place = false; | |
1940 | unsigned int i; | |
4b394a23 | 1941 | int ret = 0; |
63b94509 TL |
1942 | |
1943 | if (!pt->final && (pt->src_len & (CCP_PASSTHRU_BLOCKSIZE - 1))) | |
1944 | return -EINVAL; | |
1945 | ||
1946 | if (!pt->src || !pt->dst) | |
1947 | return -EINVAL; | |
1948 | ||
1949 | if (pt->bit_mod != CCP_PASSTHRU_BITWISE_NOOP) { | |
1950 | if (pt->mask_len != CCP_PASSTHRU_MASKSIZE) | |
1951 | return -EINVAL; | |
1952 | if (!pt->mask) | |
1953 | return -EINVAL; | |
1954 | } | |
1955 | ||
956ee21a | 1956 | BUILD_BUG_ON(CCP_PASSTHRU_SB_COUNT != 1); |
63b94509 TL |
1957 | |
1958 | memset(&op, 0, sizeof(op)); | |
1959 | op.cmd_q = cmd_q; | |
4b394a23 | 1960 | op.jobid = CCP_NEW_JOBID(cmd_q->ccp); |
63b94509 TL |
1961 | |
1962 | if (pt->bit_mod != CCP_PASSTHRU_BITWISE_NOOP) { | |
1963 | /* Load the mask */ | |
956ee21a | 1964 | op.sb_key = cmd_q->sb_key; |
63b94509 TL |
1965 | |
1966 | ret = ccp_init_dm_workarea(&mask, cmd_q, | |
956ee21a GH |
1967 | CCP_PASSTHRU_SB_COUNT * |
1968 | CCP_SB_BYTES, | |
63b94509 TL |
1969 | DMA_TO_DEVICE); |
1970 | if (ret) | |
1971 | return ret; | |
1972 | ||
b698a9f4 GH |
1973 | ret = ccp_set_dm_area(&mask, 0, pt->mask, 0, pt->mask_len); |
1974 | if (ret) | |
1975 | goto e_mask; | |
956ee21a GH |
1976 | ret = ccp_copy_to_sb(cmd_q, &mask, op.jobid, op.sb_key, |
1977 | CCP_PASSTHRU_BYTESWAP_NOOP); | |
63b94509 TL |
1978 | if (ret) { |
1979 | cmd->engine_error = cmd_q->cmd_error; | |
1980 | goto e_mask; | |
1981 | } | |
1982 | } | |
1983 | ||
1984 | /* Prepare the input and output data workareas. For in-place | |
1985 | * operations we need to set the dma direction to BIDIRECTIONAL | |
1986 | * and copy the src workarea to the dst workarea. | |
1987 | */ | |
1988 | if (sg_virt(pt->src) == sg_virt(pt->dst)) | |
1989 | in_place = true; | |
1990 | ||
1991 | ret = ccp_init_data(&src, cmd_q, pt->src, pt->src_len, | |
1992 | CCP_PASSTHRU_MASKSIZE, | |
1993 | in_place ? DMA_BIDIRECTIONAL : DMA_TO_DEVICE); | |
1994 | if (ret) | |
1995 | goto e_mask; | |
1996 | ||
8db88467 | 1997 | if (in_place) { |
63b94509 | 1998 | dst = src; |
8db88467 | 1999 | } else { |
63b94509 TL |
2000 | ret = ccp_init_data(&dst, cmd_q, pt->dst, pt->src_len, |
2001 | CCP_PASSTHRU_MASKSIZE, DMA_FROM_DEVICE); | |
2002 | if (ret) | |
2003 | goto e_src; | |
2004 | } | |
2005 | ||
2006 | /* Send data to the CCP Passthru engine | |
2007 | * Because the CCP engine works on a single source and destination | |
2008 | * dma address at a time, each entry in the source scatterlist | |
2009 | * (after the dma_map_sg call) must be less than or equal to the | |
2010 | * (remaining) length in the destination scatterlist entry and the | |
2011 | * length must be a multiple of CCP_PASSTHRU_BLOCKSIZE | |
2012 | */ | |
2013 | dst.sg_wa.sg_used = 0; | |
2014 | for (i = 1; i <= src.sg_wa.dma_count; i++) { | |
2015 | if (!dst.sg_wa.sg || | |
2016 | (dst.sg_wa.sg->length < src.sg_wa.sg->length)) { | |
2017 | ret = -EINVAL; | |
2018 | goto e_dst; | |
2019 | } | |
2020 | ||
2021 | if (i == src.sg_wa.dma_count) { | |
2022 | op.eom = 1; | |
2023 | op.soc = 1; | |
2024 | } | |
2025 | ||
2026 | op.src.type = CCP_MEMTYPE_SYSTEM; | |
2027 | op.src.u.dma.address = sg_dma_address(src.sg_wa.sg); | |
2028 | op.src.u.dma.offset = 0; | |
2029 | op.src.u.dma.length = sg_dma_len(src.sg_wa.sg); | |
2030 | ||
2031 | op.dst.type = CCP_MEMTYPE_SYSTEM; | |
2032 | op.dst.u.dma.address = sg_dma_address(dst.sg_wa.sg); | |
80e84c16 DJ |
2033 | op.dst.u.dma.offset = dst.sg_wa.sg_used; |
2034 | op.dst.u.dma.length = op.src.u.dma.length; | |
63b94509 | 2035 | |
a43eb985 | 2036 | ret = cmd_q->ccp->vdata->perform->passthru(&op); |
63b94509 TL |
2037 | if (ret) { |
2038 | cmd->engine_error = cmd_q->cmd_error; | |
2039 | goto e_dst; | |
2040 | } | |
2041 | ||
2042 | dst.sg_wa.sg_used += src.sg_wa.sg->length; | |
2043 | if (dst.sg_wa.sg_used == dst.sg_wa.sg->length) { | |
2044 | dst.sg_wa.sg = sg_next(dst.sg_wa.sg); | |
2045 | dst.sg_wa.sg_used = 0; | |
2046 | } | |
2047 | src.sg_wa.sg = sg_next(src.sg_wa.sg); | |
2048 | } | |
2049 | ||
2050 | e_dst: | |
2051 | if (!in_place) | |
2052 | ccp_free_data(&dst, cmd_q); | |
2053 | ||
2054 | e_src: | |
2055 | ccp_free_data(&src, cmd_q); | |
2056 | ||
2057 | e_mask: | |
2058 | if (pt->bit_mod != CCP_PASSTHRU_BITWISE_NOOP) | |
2059 | ccp_dm_free(&mask); | |
2060 | ||
2061 | return ret; | |
2062 | } | |
2063 | ||
58ea8abf GH |
2064 | static int ccp_run_passthru_nomap_cmd(struct ccp_cmd_queue *cmd_q, |
2065 | struct ccp_cmd *cmd) | |
2066 | { | |
2067 | struct ccp_passthru_nomap_engine *pt = &cmd->u.passthru_nomap; | |
2068 | struct ccp_dm_workarea mask; | |
2069 | struct ccp_op op; | |
2070 | int ret; | |
2071 | ||
2072 | if (!pt->final && (pt->src_len & (CCP_PASSTHRU_BLOCKSIZE - 1))) | |
2073 | return -EINVAL; | |
2074 | ||
2075 | if (!pt->src_dma || !pt->dst_dma) | |
2076 | return -EINVAL; | |
2077 | ||
2078 | if (pt->bit_mod != CCP_PASSTHRU_BITWISE_NOOP) { | |
2079 | if (pt->mask_len != CCP_PASSTHRU_MASKSIZE) | |
2080 | return -EINVAL; | |
2081 | if (!pt->mask) | |
2082 | return -EINVAL; | |
2083 | } | |
2084 | ||
956ee21a | 2085 | BUILD_BUG_ON(CCP_PASSTHRU_SB_COUNT != 1); |
58ea8abf GH |
2086 | |
2087 | memset(&op, 0, sizeof(op)); | |
2088 | op.cmd_q = cmd_q; | |
bce386af | 2089 | op.jobid = CCP_NEW_JOBID(cmd_q->ccp); |
58ea8abf GH |
2090 | |
2091 | if (pt->bit_mod != CCP_PASSTHRU_BITWISE_NOOP) { | |
2092 | /* Load the mask */ | |
956ee21a | 2093 | op.sb_key = cmd_q->sb_key; |
58ea8abf GH |
2094 | |
2095 | mask.length = pt->mask_len; | |
2096 | mask.dma.address = pt->mask; | |
2097 | mask.dma.length = pt->mask_len; | |
2098 | ||
956ee21a | 2099 | ret = ccp_copy_to_sb(cmd_q, &mask, op.jobid, op.sb_key, |
58ea8abf GH |
2100 | CCP_PASSTHRU_BYTESWAP_NOOP); |
2101 | if (ret) { | |
2102 | cmd->engine_error = cmd_q->cmd_error; | |
2103 | return ret; | |
2104 | } | |
2105 | } | |
2106 | ||
2107 | /* Send data to the CCP Passthru engine */ | |
2108 | op.eom = 1; | |
2109 | op.soc = 1; | |
2110 | ||
2111 | op.src.type = CCP_MEMTYPE_SYSTEM; | |
2112 | op.src.u.dma.address = pt->src_dma; | |
2113 | op.src.u.dma.offset = 0; | |
2114 | op.src.u.dma.length = pt->src_len; | |
2115 | ||
2116 | op.dst.type = CCP_MEMTYPE_SYSTEM; | |
2117 | op.dst.u.dma.address = pt->dst_dma; | |
2118 | op.dst.u.dma.offset = 0; | |
2119 | op.dst.u.dma.length = pt->src_len; | |
2120 | ||
a43eb985 | 2121 | ret = cmd_q->ccp->vdata->perform->passthru(&op); |
58ea8abf GH |
2122 | if (ret) |
2123 | cmd->engine_error = cmd_q->cmd_error; | |
2124 | ||
2125 | return ret; | |
2126 | } | |
2127 | ||
63b94509 TL |
2128 | static int ccp_run_ecc_mm_cmd(struct ccp_cmd_queue *cmd_q, struct ccp_cmd *cmd) |
2129 | { | |
2130 | struct ccp_ecc_engine *ecc = &cmd->u.ecc; | |
2131 | struct ccp_dm_workarea src, dst; | |
2132 | struct ccp_op op; | |
2133 | int ret; | |
2134 | u8 *save; | |
2135 | ||
2136 | if (!ecc->u.mm.operand_1 || | |
2137 | (ecc->u.mm.operand_1_len > CCP_ECC_MODULUS_BYTES)) | |
2138 | return -EINVAL; | |
2139 | ||
2140 | if (ecc->function != CCP_ECC_FUNCTION_MINV_384BIT) | |
2141 | if (!ecc->u.mm.operand_2 || | |
2142 | (ecc->u.mm.operand_2_len > CCP_ECC_MODULUS_BYTES)) | |
2143 | return -EINVAL; | |
2144 | ||
2145 | if (!ecc->u.mm.result || | |
2146 | (ecc->u.mm.result_len < CCP_ECC_MODULUS_BYTES)) | |
2147 | return -EINVAL; | |
2148 | ||
2149 | memset(&op, 0, sizeof(op)); | |
2150 | op.cmd_q = cmd_q; | |
4b394a23 | 2151 | op.jobid = CCP_NEW_JOBID(cmd_q->ccp); |
63b94509 TL |
2152 | |
2153 | /* Concatenate the modulus and the operands. Both the modulus and | |
2154 | * the operands must be in little endian format. Since the input | |
2155 | * is in big endian format it must be converted and placed in a | |
2156 | * fixed length buffer. | |
2157 | */ | |
2158 | ret = ccp_init_dm_workarea(&src, cmd_q, CCP_ECC_SRC_BUF_SIZE, | |
2159 | DMA_TO_DEVICE); | |
2160 | if (ret) | |
2161 | return ret; | |
2162 | ||
2163 | /* Save the workarea address since it is updated in order to perform | |
2164 | * the concatenation | |
2165 | */ | |
2166 | save = src.address; | |
2167 | ||
2168 | /* Copy the ECC modulus */ | |
83d650ab | 2169 | ret = ccp_reverse_set_dm_area(&src, 0, ecc->mod, 0, ecc->mod_len); |
355eba5d TL |
2170 | if (ret) |
2171 | goto e_src; | |
63b94509 TL |
2172 | src.address += CCP_ECC_OPERAND_SIZE; |
2173 | ||
2174 | /* Copy the first operand */ | |
83d650ab GH |
2175 | ret = ccp_reverse_set_dm_area(&src, 0, ecc->u.mm.operand_1, 0, |
2176 | ecc->u.mm.operand_1_len); | |
355eba5d TL |
2177 | if (ret) |
2178 | goto e_src; | |
63b94509 TL |
2179 | src.address += CCP_ECC_OPERAND_SIZE; |
2180 | ||
2181 | if (ecc->function != CCP_ECC_FUNCTION_MINV_384BIT) { | |
2182 | /* Copy the second operand */ | |
83d650ab GH |
2183 | ret = ccp_reverse_set_dm_area(&src, 0, ecc->u.mm.operand_2, 0, |
2184 | ecc->u.mm.operand_2_len); | |
355eba5d TL |
2185 | if (ret) |
2186 | goto e_src; | |
63b94509 TL |
2187 | src.address += CCP_ECC_OPERAND_SIZE; |
2188 | } | |
2189 | ||
2190 | /* Restore the workarea address */ | |
2191 | src.address = save; | |
2192 | ||
2193 | /* Prepare the output area for the operation */ | |
2194 | ret = ccp_init_dm_workarea(&dst, cmd_q, CCP_ECC_DST_BUF_SIZE, | |
2195 | DMA_FROM_DEVICE); | |
2196 | if (ret) | |
2197 | goto e_src; | |
2198 | ||
2199 | op.soc = 1; | |
2200 | op.src.u.dma.address = src.dma.address; | |
2201 | op.src.u.dma.offset = 0; | |
2202 | op.src.u.dma.length = src.length; | |
2203 | op.dst.u.dma.address = dst.dma.address; | |
2204 | op.dst.u.dma.offset = 0; | |
2205 | op.dst.u.dma.length = dst.length; | |
2206 | ||
2207 | op.u.ecc.function = cmd->u.ecc.function; | |
2208 | ||
a43eb985 | 2209 | ret = cmd_q->ccp->vdata->perform->ecc(&op); |
63b94509 TL |
2210 | if (ret) { |
2211 | cmd->engine_error = cmd_q->cmd_error; | |
2212 | goto e_dst; | |
2213 | } | |
2214 | ||
2215 | ecc->ecc_result = le16_to_cpup( | |
2216 | (const __le16 *)(dst.address + CCP_ECC_RESULT_OFFSET)); | |
2217 | if (!(ecc->ecc_result & CCP_ECC_RESULT_SUCCESS)) { | |
2218 | ret = -EIO; | |
2219 | goto e_dst; | |
2220 | } | |
2221 | ||
2222 | /* Save the ECC result */ | |
83d650ab GH |
2223 | ccp_reverse_get_dm_area(&dst, 0, ecc->u.mm.result, 0, |
2224 | CCP_ECC_MODULUS_BYTES); | |
63b94509 TL |
2225 | |
2226 | e_dst: | |
2227 | ccp_dm_free(&dst); | |
2228 | ||
2229 | e_src: | |
2230 | ccp_dm_free(&src); | |
2231 | ||
2232 | return ret; | |
2233 | } | |
2234 | ||
2235 | static int ccp_run_ecc_pm_cmd(struct ccp_cmd_queue *cmd_q, struct ccp_cmd *cmd) | |
2236 | { | |
2237 | struct ccp_ecc_engine *ecc = &cmd->u.ecc; | |
2238 | struct ccp_dm_workarea src, dst; | |
2239 | struct ccp_op op; | |
2240 | int ret; | |
2241 | u8 *save; | |
2242 | ||
2243 | if (!ecc->u.pm.point_1.x || | |
2244 | (ecc->u.pm.point_1.x_len > CCP_ECC_MODULUS_BYTES) || | |
2245 | !ecc->u.pm.point_1.y || | |
2246 | (ecc->u.pm.point_1.y_len > CCP_ECC_MODULUS_BYTES)) | |
2247 | return -EINVAL; | |
2248 | ||
2249 | if (ecc->function == CCP_ECC_FUNCTION_PADD_384BIT) { | |
2250 | if (!ecc->u.pm.point_2.x || | |
2251 | (ecc->u.pm.point_2.x_len > CCP_ECC_MODULUS_BYTES) || | |
2252 | !ecc->u.pm.point_2.y || | |
2253 | (ecc->u.pm.point_2.y_len > CCP_ECC_MODULUS_BYTES)) | |
2254 | return -EINVAL; | |
2255 | } else { | |
2256 | if (!ecc->u.pm.domain_a || | |
2257 | (ecc->u.pm.domain_a_len > CCP_ECC_MODULUS_BYTES)) | |
2258 | return -EINVAL; | |
2259 | ||
2260 | if (ecc->function == CCP_ECC_FUNCTION_PMUL_384BIT) | |
2261 | if (!ecc->u.pm.scalar || | |
2262 | (ecc->u.pm.scalar_len > CCP_ECC_MODULUS_BYTES)) | |
2263 | return -EINVAL; | |
2264 | } | |
2265 | ||
2266 | if (!ecc->u.pm.result.x || | |
2267 | (ecc->u.pm.result.x_len < CCP_ECC_MODULUS_BYTES) || | |
2268 | !ecc->u.pm.result.y || | |
2269 | (ecc->u.pm.result.y_len < CCP_ECC_MODULUS_BYTES)) | |
2270 | return -EINVAL; | |
2271 | ||
2272 | memset(&op, 0, sizeof(op)); | |
2273 | op.cmd_q = cmd_q; | |
4b394a23 | 2274 | op.jobid = CCP_NEW_JOBID(cmd_q->ccp); |
63b94509 TL |
2275 | |
2276 | /* Concatenate the modulus and the operands. Both the modulus and | |
2277 | * the operands must be in little endian format. Since the input | |
2278 | * is in big endian format it must be converted and placed in a | |
2279 | * fixed length buffer. | |
2280 | */ | |
2281 | ret = ccp_init_dm_workarea(&src, cmd_q, CCP_ECC_SRC_BUF_SIZE, | |
2282 | DMA_TO_DEVICE); | |
2283 | if (ret) | |
2284 | return ret; | |
2285 | ||
2286 | /* Save the workarea address since it is updated in order to perform | |
2287 | * the concatenation | |
2288 | */ | |
2289 | save = src.address; | |
2290 | ||
2291 | /* Copy the ECC modulus */ | |
83d650ab | 2292 | ret = ccp_reverse_set_dm_area(&src, 0, ecc->mod, 0, ecc->mod_len); |
355eba5d TL |
2293 | if (ret) |
2294 | goto e_src; | |
63b94509 TL |
2295 | src.address += CCP_ECC_OPERAND_SIZE; |
2296 | ||
2297 | /* Copy the first point X and Y coordinate */ | |
83d650ab GH |
2298 | ret = ccp_reverse_set_dm_area(&src, 0, ecc->u.pm.point_1.x, 0, |
2299 | ecc->u.pm.point_1.x_len); | |
355eba5d TL |
2300 | if (ret) |
2301 | goto e_src; | |
63b94509 | 2302 | src.address += CCP_ECC_OPERAND_SIZE; |
83d650ab GH |
2303 | ret = ccp_reverse_set_dm_area(&src, 0, ecc->u.pm.point_1.y, 0, |
2304 | ecc->u.pm.point_1.y_len); | |
355eba5d TL |
2305 | if (ret) |
2306 | goto e_src; | |
63b94509 TL |
2307 | src.address += CCP_ECC_OPERAND_SIZE; |
2308 | ||
4b394a23 | 2309 | /* Set the first point Z coordinate to 1 */ |
8db88467 | 2310 | *src.address = 0x01; |
63b94509 TL |
2311 | src.address += CCP_ECC_OPERAND_SIZE; |
2312 | ||
2313 | if (ecc->function == CCP_ECC_FUNCTION_PADD_384BIT) { | |
2314 | /* Copy the second point X and Y coordinate */ | |
83d650ab GH |
2315 | ret = ccp_reverse_set_dm_area(&src, 0, ecc->u.pm.point_2.x, 0, |
2316 | ecc->u.pm.point_2.x_len); | |
355eba5d TL |
2317 | if (ret) |
2318 | goto e_src; | |
63b94509 | 2319 | src.address += CCP_ECC_OPERAND_SIZE; |
83d650ab GH |
2320 | ret = ccp_reverse_set_dm_area(&src, 0, ecc->u.pm.point_2.y, 0, |
2321 | ecc->u.pm.point_2.y_len); | |
355eba5d TL |
2322 | if (ret) |
2323 | goto e_src; | |
63b94509 TL |
2324 | src.address += CCP_ECC_OPERAND_SIZE; |
2325 | ||
4b394a23 | 2326 | /* Set the second point Z coordinate to 1 */ |
8db88467 | 2327 | *src.address = 0x01; |
63b94509 TL |
2328 | src.address += CCP_ECC_OPERAND_SIZE; |
2329 | } else { | |
2330 | /* Copy the Domain "a" parameter */ | |
83d650ab GH |
2331 | ret = ccp_reverse_set_dm_area(&src, 0, ecc->u.pm.domain_a, 0, |
2332 | ecc->u.pm.domain_a_len); | |
355eba5d TL |
2333 | if (ret) |
2334 | goto e_src; | |
63b94509 TL |
2335 | src.address += CCP_ECC_OPERAND_SIZE; |
2336 | ||
2337 | if (ecc->function == CCP_ECC_FUNCTION_PMUL_384BIT) { | |
2338 | /* Copy the scalar value */ | |
83d650ab GH |
2339 | ret = ccp_reverse_set_dm_area(&src, 0, |
2340 | ecc->u.pm.scalar, 0, | |
2341 | ecc->u.pm.scalar_len); | |
355eba5d TL |
2342 | if (ret) |
2343 | goto e_src; | |
63b94509 TL |
2344 | src.address += CCP_ECC_OPERAND_SIZE; |
2345 | } | |
2346 | } | |
2347 | ||
2348 | /* Restore the workarea address */ | |
2349 | src.address = save; | |
2350 | ||
2351 | /* Prepare the output area for the operation */ | |
2352 | ret = ccp_init_dm_workarea(&dst, cmd_q, CCP_ECC_DST_BUF_SIZE, | |
2353 | DMA_FROM_DEVICE); | |
2354 | if (ret) | |
2355 | goto e_src; | |
2356 | ||
2357 | op.soc = 1; | |
2358 | op.src.u.dma.address = src.dma.address; | |
2359 | op.src.u.dma.offset = 0; | |
2360 | op.src.u.dma.length = src.length; | |
2361 | op.dst.u.dma.address = dst.dma.address; | |
2362 | op.dst.u.dma.offset = 0; | |
2363 | op.dst.u.dma.length = dst.length; | |
2364 | ||
2365 | op.u.ecc.function = cmd->u.ecc.function; | |
2366 | ||
a43eb985 | 2367 | ret = cmd_q->ccp->vdata->perform->ecc(&op); |
63b94509 TL |
2368 | if (ret) { |
2369 | cmd->engine_error = cmd_q->cmd_error; | |
2370 | goto e_dst; | |
2371 | } | |
2372 | ||
2373 | ecc->ecc_result = le16_to_cpup( | |
2374 | (const __le16 *)(dst.address + CCP_ECC_RESULT_OFFSET)); | |
2375 | if (!(ecc->ecc_result & CCP_ECC_RESULT_SUCCESS)) { | |
2376 | ret = -EIO; | |
2377 | goto e_dst; | |
2378 | } | |
2379 | ||
2380 | /* Save the workarea address since it is updated as we walk through | |
2381 | * to copy the point math result | |
2382 | */ | |
2383 | save = dst.address; | |
2384 | ||
2385 | /* Save the ECC result X and Y coordinates */ | |
83d650ab | 2386 | ccp_reverse_get_dm_area(&dst, 0, ecc->u.pm.result.x, 0, |
63b94509 TL |
2387 | CCP_ECC_MODULUS_BYTES); |
2388 | dst.address += CCP_ECC_OUTPUT_SIZE; | |
83d650ab | 2389 | ccp_reverse_get_dm_area(&dst, 0, ecc->u.pm.result.y, 0, |
63b94509 TL |
2390 | CCP_ECC_MODULUS_BYTES); |
2391 | dst.address += CCP_ECC_OUTPUT_SIZE; | |
2392 | ||
2393 | /* Restore the workarea address */ | |
2394 | dst.address = save; | |
2395 | ||
2396 | e_dst: | |
2397 | ccp_dm_free(&dst); | |
2398 | ||
2399 | e_src: | |
2400 | ccp_dm_free(&src); | |
2401 | ||
2402 | return ret; | |
2403 | } | |
2404 | ||
2405 | static int ccp_run_ecc_cmd(struct ccp_cmd_queue *cmd_q, struct ccp_cmd *cmd) | |
2406 | { | |
2407 | struct ccp_ecc_engine *ecc = &cmd->u.ecc; | |
2408 | ||
2409 | ecc->ecc_result = 0; | |
2410 | ||
2411 | if (!ecc->mod || | |
2412 | (ecc->mod_len > CCP_ECC_MODULUS_BYTES)) | |
2413 | return -EINVAL; | |
2414 | ||
2415 | switch (ecc->function) { | |
2416 | case CCP_ECC_FUNCTION_MMUL_384BIT: | |
2417 | case CCP_ECC_FUNCTION_MADD_384BIT: | |
2418 | case CCP_ECC_FUNCTION_MINV_384BIT: | |
2419 | return ccp_run_ecc_mm_cmd(cmd_q, cmd); | |
2420 | ||
2421 | case CCP_ECC_FUNCTION_PADD_384BIT: | |
2422 | case CCP_ECC_FUNCTION_PMUL_384BIT: | |
2423 | case CCP_ECC_FUNCTION_PDBL_384BIT: | |
2424 | return ccp_run_ecc_pm_cmd(cmd_q, cmd); | |
2425 | ||
2426 | default: | |
2427 | return -EINVAL; | |
2428 | } | |
2429 | } | |
2430 | ||
2431 | int ccp_run_cmd(struct ccp_cmd_queue *cmd_q, struct ccp_cmd *cmd) | |
2432 | { | |
2433 | int ret; | |
2434 | ||
2435 | cmd->engine_error = 0; | |
2436 | cmd_q->cmd_error = 0; | |
2437 | cmd_q->int_rcvd = 0; | |
bb4e89b3 | 2438 | cmd_q->free_slots = cmd_q->ccp->vdata->perform->get_free_slots(cmd_q); |
63b94509 TL |
2439 | |
2440 | switch (cmd->engine) { | |
2441 | case CCP_ENGINE_AES: | |
2442 | ret = ccp_run_aes_cmd(cmd_q, cmd); | |
2443 | break; | |
2444 | case CCP_ENGINE_XTS_AES_128: | |
2445 | ret = ccp_run_xts_aes_cmd(cmd_q, cmd); | |
2446 | break; | |
990672d4 GH |
2447 | case CCP_ENGINE_DES3: |
2448 | ret = ccp_run_des3_cmd(cmd_q, cmd); | |
2449 | break; | |
63b94509 TL |
2450 | case CCP_ENGINE_SHA: |
2451 | ret = ccp_run_sha_cmd(cmd_q, cmd); | |
2452 | break; | |
2453 | case CCP_ENGINE_RSA: | |
2454 | ret = ccp_run_rsa_cmd(cmd_q, cmd); | |
2455 | break; | |
2456 | case CCP_ENGINE_PASSTHRU: | |
58ea8abf GH |
2457 | if (cmd->flags & CCP_CMD_PASSTHRU_NO_DMA_MAP) |
2458 | ret = ccp_run_passthru_nomap_cmd(cmd_q, cmd); | |
2459 | else | |
2460 | ret = ccp_run_passthru_cmd(cmd_q, cmd); | |
63b94509 TL |
2461 | break; |
2462 | case CCP_ENGINE_ECC: | |
2463 | ret = ccp_run_ecc_cmd(cmd_q, cmd); | |
2464 | break; | |
2465 | default: | |
2466 | ret = -EINVAL; | |
2467 | } | |
2468 | ||
2469 | return ret; | |
2470 | } |