Commit | Line | Data |
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d2912cb1 | 1 | // SPDX-License-Identifier: GPL-2.0-only |
63b94509 TL |
2 | /* |
3 | * AMD Cryptographic Coprocessor (CCP) driver | |
4 | * | |
499df967 | 5 | * Copyright (C) 2013-2019 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 | ||
0c3dc787 | 11 | #include <linux/dma-mapping.h> |
63b94509 TL |
12 | #include <linux/module.h> |
13 | #include <linux/kernel.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) | |
8a302808 | 67 | dma_unmap_sg(wa->dma_dev, wa->dma_sg_head, wa->nents, wa->dma_dir); |
63b94509 TL |
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; | |
8a302808 | 96 | wa->dma_sg_head = sg; |
63b94509 TL |
97 | wa->dma_dev = dev; |
98 | wa->dma_dir = dma_dir; | |
99 | wa->dma_count = dma_map_sg(dev, sg, wa->nents, dma_dir); | |
100 | if (!wa->dma_count) | |
101 | return -ENOMEM; | |
102 | ||
63b94509 TL |
103 | return 0; |
104 | } | |
105 | ||
106 | static void ccp_update_sg_workarea(struct ccp_sg_workarea *wa, unsigned int len) | |
107 | { | |
81a59f00 | 108 | unsigned int nbytes = min_t(u64, len, wa->bytes_left); |
8a302808 | 109 | unsigned int sg_combined_len = 0; |
63b94509 TL |
110 | |
111 | if (!wa->sg) | |
112 | return; | |
113 | ||
114 | wa->sg_used += nbytes; | |
115 | wa->bytes_left -= nbytes; | |
8a302808 JA |
116 | if (wa->sg_used == sg_dma_len(wa->dma_sg)) { |
117 | /* Advance to the next DMA scatterlist entry */ | |
118 | wa->dma_sg = sg_next(wa->dma_sg); | |
119 | ||
120 | /* In the case that the DMA mapped scatterlist has entries | |
121 | * that have been merged, the non-DMA mapped scatterlist | |
122 | * must be advanced multiple times for each merged entry. | |
123 | * This ensures that the current non-DMA mapped entry | |
124 | * corresponds to the current DMA mapped entry. | |
125 | */ | |
126 | do { | |
127 | sg_combined_len += wa->sg->length; | |
128 | wa->sg = sg_next(wa->sg); | |
129 | } while (wa->sg_used > sg_combined_len); | |
130 | ||
63b94509 TL |
131 | wa->sg_used = 0; |
132 | } | |
133 | } | |
134 | ||
135 | static void ccp_dm_free(struct ccp_dm_workarea *wa) | |
136 | { | |
137 | if (wa->length <= CCP_DMAPOOL_MAX_SIZE) { | |
138 | if (wa->address) | |
139 | dma_pool_free(wa->dma_pool, wa->address, | |
140 | wa->dma.address); | |
141 | } else { | |
142 | if (wa->dma.address) | |
143 | dma_unmap_single(wa->dev, wa->dma.address, wa->length, | |
144 | wa->dma.dir); | |
145 | kfree(wa->address); | |
146 | } | |
147 | ||
148 | wa->address = NULL; | |
149 | wa->dma.address = 0; | |
150 | } | |
151 | ||
152 | static int ccp_init_dm_workarea(struct ccp_dm_workarea *wa, | |
153 | struct ccp_cmd_queue *cmd_q, | |
154 | unsigned int len, | |
155 | enum dma_data_direction dir) | |
156 | { | |
157 | memset(wa, 0, sizeof(*wa)); | |
158 | ||
159 | if (!len) | |
160 | return 0; | |
161 | ||
162 | wa->dev = cmd_q->ccp->dev; | |
163 | wa->length = len; | |
164 | ||
165 | if (len <= CCP_DMAPOOL_MAX_SIZE) { | |
166 | wa->dma_pool = cmd_q->dma_pool; | |
167 | ||
bfb5eb08 | 168 | wa->address = dma_pool_zalloc(wa->dma_pool, GFP_KERNEL, |
63b94509 TL |
169 | &wa->dma.address); |
170 | if (!wa->address) | |
171 | return -ENOMEM; | |
172 | ||
173 | wa->dma.length = CCP_DMAPOOL_MAX_SIZE; | |
174 | ||
63b94509 TL |
175 | } else { |
176 | wa->address = kzalloc(len, GFP_KERNEL); | |
177 | if (!wa->address) | |
178 | return -ENOMEM; | |
179 | ||
180 | wa->dma.address = dma_map_single(wa->dev, wa->address, len, | |
181 | dir); | |
ef4064bb | 182 | if (dma_mapping_error(wa->dev, wa->dma.address)) |
63b94509 TL |
183 | return -ENOMEM; |
184 | ||
185 | wa->dma.length = len; | |
186 | } | |
187 | wa->dma.dir = dir; | |
188 | ||
189 | return 0; | |
190 | } | |
191 | ||
b698a9f4 GH |
192 | static int ccp_set_dm_area(struct ccp_dm_workarea *wa, unsigned int wa_offset, |
193 | struct scatterlist *sg, unsigned int sg_offset, | |
194 | unsigned int len) | |
63b94509 TL |
195 | { |
196 | WARN_ON(!wa->address); | |
197 | ||
b698a9f4 GH |
198 | if (len > (wa->length - wa_offset)) |
199 | return -EINVAL; | |
200 | ||
63b94509 TL |
201 | scatterwalk_map_and_copy(wa->address + wa_offset, sg, sg_offset, len, |
202 | 0); | |
b698a9f4 | 203 | return 0; |
63b94509 TL |
204 | } |
205 | ||
206 | static void ccp_get_dm_area(struct ccp_dm_workarea *wa, unsigned int wa_offset, | |
207 | struct scatterlist *sg, unsigned int sg_offset, | |
208 | unsigned int len) | |
209 | { | |
210 | WARN_ON(!wa->address); | |
211 | ||
212 | scatterwalk_map_and_copy(wa->address + wa_offset, sg, sg_offset, len, | |
213 | 1); | |
214 | } | |
215 | ||
355eba5d | 216 | static int ccp_reverse_set_dm_area(struct ccp_dm_workarea *wa, |
83d650ab | 217 | unsigned int wa_offset, |
355eba5d | 218 | struct scatterlist *sg, |
83d650ab GH |
219 | unsigned int sg_offset, |
220 | unsigned int len) | |
63b94509 | 221 | { |
83d650ab | 222 | u8 *p, *q; |
b698a9f4 | 223 | int rc; |
83d650ab | 224 | |
b698a9f4 GH |
225 | rc = ccp_set_dm_area(wa, wa_offset, sg, sg_offset, len); |
226 | if (rc) | |
227 | return rc; | |
83d650ab GH |
228 | |
229 | p = wa->address + wa_offset; | |
230 | q = p + len - 1; | |
231 | while (p < q) { | |
232 | *p = *p ^ *q; | |
233 | *q = *p ^ *q; | |
234 | *p = *p ^ *q; | |
235 | p++; | |
236 | q--; | |
63b94509 | 237 | } |
355eba5d | 238 | return 0; |
63b94509 TL |
239 | } |
240 | ||
241 | static void ccp_reverse_get_dm_area(struct ccp_dm_workarea *wa, | |
83d650ab | 242 | unsigned int wa_offset, |
63b94509 | 243 | struct scatterlist *sg, |
83d650ab | 244 | unsigned int sg_offset, |
63b94509 TL |
245 | unsigned int len) |
246 | { | |
83d650ab GH |
247 | u8 *p, *q; |
248 | ||
249 | p = wa->address + wa_offset; | |
250 | q = p + len - 1; | |
251 | while (p < q) { | |
252 | *p = *p ^ *q; | |
253 | *q = *p ^ *q; | |
254 | *p = *p ^ *q; | |
255 | p++; | |
256 | q--; | |
63b94509 | 257 | } |
83d650ab GH |
258 | |
259 | ccp_get_dm_area(wa, wa_offset, sg, sg_offset, len); | |
63b94509 TL |
260 | } |
261 | ||
262 | static void ccp_free_data(struct ccp_data *data, struct ccp_cmd_queue *cmd_q) | |
263 | { | |
264 | ccp_dm_free(&data->dm_wa); | |
265 | ccp_sg_free(&data->sg_wa); | |
266 | } | |
267 | ||
268 | static int ccp_init_data(struct ccp_data *data, struct ccp_cmd_queue *cmd_q, | |
81a59f00 | 269 | struct scatterlist *sg, u64 sg_len, |
63b94509 TL |
270 | unsigned int dm_len, |
271 | enum dma_data_direction dir) | |
272 | { | |
273 | int ret; | |
274 | ||
275 | memset(data, 0, sizeof(*data)); | |
276 | ||
277 | ret = ccp_init_sg_workarea(&data->sg_wa, cmd_q->ccp->dev, sg, sg_len, | |
278 | dir); | |
279 | if (ret) | |
280 | goto e_err; | |
281 | ||
282 | ret = ccp_init_dm_workarea(&data->dm_wa, cmd_q, dm_len, dir); | |
283 | if (ret) | |
284 | goto e_err; | |
285 | ||
286 | return 0; | |
287 | ||
288 | e_err: | |
289 | ccp_free_data(data, cmd_q); | |
290 | ||
291 | return ret; | |
292 | } | |
293 | ||
294 | static unsigned int ccp_queue_buf(struct ccp_data *data, unsigned int from) | |
295 | { | |
296 | struct ccp_sg_workarea *sg_wa = &data->sg_wa; | |
297 | struct ccp_dm_workarea *dm_wa = &data->dm_wa; | |
298 | unsigned int buf_count, nbytes; | |
299 | ||
300 | /* Clear the buffer if setting it */ | |
301 | if (!from) | |
302 | memset(dm_wa->address, 0, dm_wa->length); | |
303 | ||
304 | if (!sg_wa->sg) | |
305 | return 0; | |
306 | ||
81a59f00 TL |
307 | /* Perform the copy operation |
308 | * nbytes will always be <= UINT_MAX because dm_wa->length is | |
309 | * an unsigned int | |
310 | */ | |
311 | nbytes = min_t(u64, sg_wa->bytes_left, dm_wa->length); | |
63b94509 TL |
312 | scatterwalk_map_and_copy(dm_wa->address, sg_wa->sg, sg_wa->sg_used, |
313 | nbytes, from); | |
314 | ||
315 | /* Update the structures and generate the count */ | |
316 | buf_count = 0; | |
317 | while (sg_wa->bytes_left && (buf_count < dm_wa->length)) { | |
8a302808 | 318 | nbytes = min(sg_dma_len(sg_wa->dma_sg) - sg_wa->sg_used, |
81a59f00 TL |
319 | dm_wa->length - buf_count); |
320 | nbytes = min_t(u64, sg_wa->bytes_left, nbytes); | |
63b94509 TL |
321 | |
322 | buf_count += nbytes; | |
323 | ccp_update_sg_workarea(sg_wa, nbytes); | |
324 | } | |
325 | ||
326 | return buf_count; | |
327 | } | |
328 | ||
329 | static unsigned int ccp_fill_queue_buf(struct ccp_data *data) | |
330 | { | |
331 | return ccp_queue_buf(data, 0); | |
332 | } | |
333 | ||
334 | static unsigned int ccp_empty_queue_buf(struct ccp_data *data) | |
335 | { | |
336 | return ccp_queue_buf(data, 1); | |
337 | } | |
338 | ||
339 | static void ccp_prepare_data(struct ccp_data *src, struct ccp_data *dst, | |
340 | struct ccp_op *op, unsigned int block_size, | |
341 | bool blocksize_op) | |
342 | { | |
343 | unsigned int sg_src_len, sg_dst_len, op_len; | |
344 | ||
345 | /* The CCP can only DMA from/to one address each per operation. This | |
346 | * requires that we find the smallest DMA area between the source | |
81a59f00 TL |
347 | * and destination. The resulting len values will always be <= UINT_MAX |
348 | * because the dma length is an unsigned int. | |
63b94509 | 349 | */ |
8a302808 | 350 | sg_src_len = sg_dma_len(src->sg_wa.dma_sg) - src->sg_wa.sg_used; |
81a59f00 | 351 | sg_src_len = min_t(u64, src->sg_wa.bytes_left, sg_src_len); |
63b94509 TL |
352 | |
353 | if (dst) { | |
8a302808 | 354 | sg_dst_len = sg_dma_len(dst->sg_wa.dma_sg) - dst->sg_wa.sg_used; |
81a59f00 | 355 | sg_dst_len = min_t(u64, src->sg_wa.bytes_left, sg_dst_len); |
63b94509 | 356 | op_len = min(sg_src_len, sg_dst_len); |
8db88467 | 357 | } else { |
63b94509 | 358 | op_len = sg_src_len; |
8db88467 | 359 | } |
63b94509 TL |
360 | |
361 | /* The data operation length will be at least block_size in length | |
362 | * or the smaller of available sg room remaining for the source or | |
363 | * the destination | |
364 | */ | |
365 | op_len = max(op_len, block_size); | |
366 | ||
367 | /* Unless we have to buffer data, there's no reason to wait */ | |
368 | op->soc = 0; | |
369 | ||
370 | if (sg_src_len < block_size) { | |
371 | /* Not enough data in the sg element, so it | |
372 | * needs to be buffered into a blocksize chunk | |
373 | */ | |
374 | int cp_len = ccp_fill_queue_buf(src); | |
375 | ||
376 | op->soc = 1; | |
377 | op->src.u.dma.address = src->dm_wa.dma.address; | |
378 | op->src.u.dma.offset = 0; | |
379 | op->src.u.dma.length = (blocksize_op) ? block_size : cp_len; | |
380 | } else { | |
381 | /* Enough data in the sg element, but we need to | |
382 | * adjust for any previously copied data | |
383 | */ | |
8a302808 | 384 | op->src.u.dma.address = sg_dma_address(src->sg_wa.dma_sg); |
63b94509 TL |
385 | op->src.u.dma.offset = src->sg_wa.sg_used; |
386 | op->src.u.dma.length = op_len & ~(block_size - 1); | |
387 | ||
388 | ccp_update_sg_workarea(&src->sg_wa, op->src.u.dma.length); | |
389 | } | |
390 | ||
391 | if (dst) { | |
392 | if (sg_dst_len < block_size) { | |
393 | /* Not enough room in the sg element or we're on the | |
394 | * last piece of data (when using padding), so the | |
395 | * output needs to be buffered into a blocksize chunk | |
396 | */ | |
397 | op->soc = 1; | |
398 | op->dst.u.dma.address = dst->dm_wa.dma.address; | |
399 | op->dst.u.dma.offset = 0; | |
400 | op->dst.u.dma.length = op->src.u.dma.length; | |
401 | } else { | |
402 | /* Enough room in the sg element, but we need to | |
403 | * adjust for any previously used area | |
404 | */ | |
8a302808 | 405 | op->dst.u.dma.address = sg_dma_address(dst->sg_wa.dma_sg); |
63b94509 TL |
406 | op->dst.u.dma.offset = dst->sg_wa.sg_used; |
407 | op->dst.u.dma.length = op->src.u.dma.length; | |
408 | } | |
409 | } | |
410 | } | |
411 | ||
412 | static void ccp_process_data(struct ccp_data *src, struct ccp_data *dst, | |
413 | struct ccp_op *op) | |
414 | { | |
415 | op->init = 0; | |
416 | ||
417 | if (dst) { | |
418 | if (op->dst.u.dma.address == dst->dm_wa.dma.address) | |
419 | ccp_empty_queue_buf(dst); | |
420 | else | |
421 | ccp_update_sg_workarea(&dst->sg_wa, | |
422 | op->dst.u.dma.length); | |
423 | } | |
424 | } | |
425 | ||
956ee21a GH |
426 | static int ccp_copy_to_from_sb(struct ccp_cmd_queue *cmd_q, |
427 | struct ccp_dm_workarea *wa, u32 jobid, u32 sb, | |
428 | u32 byte_swap, bool from) | |
63b94509 TL |
429 | { |
430 | struct ccp_op op; | |
431 | ||
432 | memset(&op, 0, sizeof(op)); | |
433 | ||
434 | op.cmd_q = cmd_q; | |
435 | op.jobid = jobid; | |
436 | op.eom = 1; | |
437 | ||
438 | if (from) { | |
439 | op.soc = 1; | |
956ee21a GH |
440 | op.src.type = CCP_MEMTYPE_SB; |
441 | op.src.u.sb = sb; | |
63b94509 TL |
442 | op.dst.type = CCP_MEMTYPE_SYSTEM; |
443 | op.dst.u.dma.address = wa->dma.address; | |
444 | op.dst.u.dma.length = wa->length; | |
445 | } else { | |
446 | op.src.type = CCP_MEMTYPE_SYSTEM; | |
447 | op.src.u.dma.address = wa->dma.address; | |
448 | op.src.u.dma.length = wa->length; | |
956ee21a GH |
449 | op.dst.type = CCP_MEMTYPE_SB; |
450 | op.dst.u.sb = sb; | |
63b94509 TL |
451 | } |
452 | ||
453 | op.u.passthru.byte_swap = byte_swap; | |
454 | ||
a43eb985 | 455 | return cmd_q->ccp->vdata->perform->passthru(&op); |
63b94509 TL |
456 | } |
457 | ||
956ee21a GH |
458 | static int ccp_copy_to_sb(struct ccp_cmd_queue *cmd_q, |
459 | struct ccp_dm_workarea *wa, u32 jobid, u32 sb, | |
460 | u32 byte_swap) | |
63b94509 | 461 | { |
956ee21a | 462 | return ccp_copy_to_from_sb(cmd_q, wa, jobid, sb, byte_swap, false); |
63b94509 TL |
463 | } |
464 | ||
956ee21a GH |
465 | static int ccp_copy_from_sb(struct ccp_cmd_queue *cmd_q, |
466 | struct ccp_dm_workarea *wa, u32 jobid, u32 sb, | |
467 | u32 byte_swap) | |
63b94509 | 468 | { |
956ee21a | 469 | return ccp_copy_to_from_sb(cmd_q, wa, jobid, sb, byte_swap, true); |
63b94509 TL |
470 | } |
471 | ||
72c8117a AB |
472 | static noinline_for_stack int |
473 | ccp_run_aes_cmac_cmd(struct ccp_cmd_queue *cmd_q, struct ccp_cmd *cmd) | |
63b94509 TL |
474 | { |
475 | struct ccp_aes_engine *aes = &cmd->u.aes; | |
476 | struct ccp_dm_workarea key, ctx; | |
477 | struct ccp_data src; | |
478 | struct ccp_op op; | |
479 | unsigned int dm_offset; | |
480 | int ret; | |
481 | ||
482 | if (!((aes->key_len == AES_KEYSIZE_128) || | |
483 | (aes->key_len == AES_KEYSIZE_192) || | |
484 | (aes->key_len == AES_KEYSIZE_256))) | |
485 | return -EINVAL; | |
486 | ||
487 | if (aes->src_len & (AES_BLOCK_SIZE - 1)) | |
488 | return -EINVAL; | |
489 | ||
490 | if (aes->iv_len != AES_BLOCK_SIZE) | |
491 | return -EINVAL; | |
492 | ||
493 | if (!aes->key || !aes->iv || !aes->src) | |
494 | return -EINVAL; | |
495 | ||
496 | if (aes->cmac_final) { | |
497 | if (aes->cmac_key_len != AES_BLOCK_SIZE) | |
498 | return -EINVAL; | |
499 | ||
500 | if (!aes->cmac_key) | |
501 | return -EINVAL; | |
502 | } | |
503 | ||
956ee21a GH |
504 | BUILD_BUG_ON(CCP_AES_KEY_SB_COUNT != 1); |
505 | BUILD_BUG_ON(CCP_AES_CTX_SB_COUNT != 1); | |
63b94509 TL |
506 | |
507 | ret = -EIO; | |
508 | memset(&op, 0, sizeof(op)); | |
509 | op.cmd_q = cmd_q; | |
4b394a23 | 510 | op.jobid = CCP_NEW_JOBID(cmd_q->ccp); |
956ee21a GH |
511 | op.sb_key = cmd_q->sb_key; |
512 | op.sb_ctx = cmd_q->sb_ctx; | |
63b94509 TL |
513 | op.init = 1; |
514 | op.u.aes.type = aes->type; | |
515 | op.u.aes.mode = aes->mode; | |
516 | op.u.aes.action = aes->action; | |
517 | ||
956ee21a | 518 | /* All supported key sizes fit in a single (32-byte) SB entry |
63b94509 TL |
519 | * and must be in little endian format. Use the 256-bit byte |
520 | * swap passthru option to convert from big endian to little | |
521 | * endian. | |
522 | */ | |
523 | ret = ccp_init_dm_workarea(&key, cmd_q, | |
956ee21a | 524 | CCP_AES_KEY_SB_COUNT * CCP_SB_BYTES, |
63b94509 TL |
525 | DMA_TO_DEVICE); |
526 | if (ret) | |
527 | return ret; | |
528 | ||
956ee21a | 529 | dm_offset = CCP_SB_BYTES - aes->key_len; |
b698a9f4 GH |
530 | ret = ccp_set_dm_area(&key, dm_offset, aes->key, 0, aes->key_len); |
531 | if (ret) | |
532 | goto e_key; | |
956ee21a GH |
533 | ret = ccp_copy_to_sb(cmd_q, &key, op.jobid, op.sb_key, |
534 | CCP_PASSTHRU_BYTESWAP_256BIT); | |
63b94509 TL |
535 | if (ret) { |
536 | cmd->engine_error = cmd_q->cmd_error; | |
537 | goto e_key; | |
538 | } | |
539 | ||
956ee21a | 540 | /* The AES context fits in a single (32-byte) SB entry and |
63b94509 TL |
541 | * must be in little endian format. Use the 256-bit byte swap |
542 | * passthru option to convert from big endian to little endian. | |
543 | */ | |
544 | ret = ccp_init_dm_workarea(&ctx, cmd_q, | |
956ee21a | 545 | CCP_AES_CTX_SB_COUNT * CCP_SB_BYTES, |
63b94509 TL |
546 | DMA_BIDIRECTIONAL); |
547 | if (ret) | |
548 | goto e_key; | |
549 | ||
956ee21a | 550 | dm_offset = CCP_SB_BYTES - AES_BLOCK_SIZE; |
b698a9f4 GH |
551 | ret = ccp_set_dm_area(&ctx, dm_offset, aes->iv, 0, aes->iv_len); |
552 | if (ret) | |
553 | goto e_ctx; | |
956ee21a GH |
554 | ret = ccp_copy_to_sb(cmd_q, &ctx, op.jobid, op.sb_ctx, |
555 | CCP_PASSTHRU_BYTESWAP_256BIT); | |
63b94509 TL |
556 | if (ret) { |
557 | cmd->engine_error = cmd_q->cmd_error; | |
558 | goto e_ctx; | |
559 | } | |
560 | ||
561 | /* Send data to the CCP AES engine */ | |
562 | ret = ccp_init_data(&src, cmd_q, aes->src, aes->src_len, | |
563 | AES_BLOCK_SIZE, DMA_TO_DEVICE); | |
564 | if (ret) | |
565 | goto e_ctx; | |
566 | ||
567 | while (src.sg_wa.bytes_left) { | |
568 | ccp_prepare_data(&src, NULL, &op, AES_BLOCK_SIZE, true); | |
569 | if (aes->cmac_final && !src.sg_wa.bytes_left) { | |
570 | op.eom = 1; | |
571 | ||
572 | /* Push the K1/K2 key to the CCP now */ | |
956ee21a GH |
573 | ret = ccp_copy_from_sb(cmd_q, &ctx, op.jobid, |
574 | op.sb_ctx, | |
575 | CCP_PASSTHRU_BYTESWAP_256BIT); | |
63b94509 TL |
576 | if (ret) { |
577 | cmd->engine_error = cmd_q->cmd_error; | |
578 | goto e_src; | |
579 | } | |
580 | ||
b698a9f4 GH |
581 | ret = ccp_set_dm_area(&ctx, 0, aes->cmac_key, 0, |
582 | aes->cmac_key_len); | |
583 | if (ret) | |
584 | goto e_src; | |
956ee21a GH |
585 | ret = ccp_copy_to_sb(cmd_q, &ctx, op.jobid, op.sb_ctx, |
586 | CCP_PASSTHRU_BYTESWAP_256BIT); | |
63b94509 TL |
587 | if (ret) { |
588 | cmd->engine_error = cmd_q->cmd_error; | |
589 | goto e_src; | |
590 | } | |
591 | } | |
592 | ||
a43eb985 | 593 | ret = cmd_q->ccp->vdata->perform->aes(&op); |
63b94509 TL |
594 | if (ret) { |
595 | cmd->engine_error = cmd_q->cmd_error; | |
596 | goto e_src; | |
597 | } | |
598 | ||
599 | ccp_process_data(&src, NULL, &op); | |
600 | } | |
601 | ||
602 | /* Retrieve the AES context - convert from LE to BE using | |
603 | * 32-byte (256-bit) byteswapping | |
604 | */ | |
956ee21a GH |
605 | ret = ccp_copy_from_sb(cmd_q, &ctx, op.jobid, op.sb_ctx, |
606 | CCP_PASSTHRU_BYTESWAP_256BIT); | |
63b94509 TL |
607 | if (ret) { |
608 | cmd->engine_error = cmd_q->cmd_error; | |
609 | goto e_src; | |
610 | } | |
611 | ||
612 | /* ...but we only need AES_BLOCK_SIZE bytes */ | |
956ee21a | 613 | dm_offset = CCP_SB_BYTES - AES_BLOCK_SIZE; |
63b94509 TL |
614 | ccp_get_dm_area(&ctx, dm_offset, aes->iv, 0, aes->iv_len); |
615 | ||
616 | e_src: | |
617 | ccp_free_data(&src, cmd_q); | |
618 | ||
619 | e_ctx: | |
620 | ccp_dm_free(&ctx); | |
621 | ||
622 | e_key: | |
623 | ccp_dm_free(&key); | |
624 | ||
625 | return ret; | |
626 | } | |
627 | ||
72c8117a AB |
628 | static noinline_for_stack int |
629 | ccp_run_aes_gcm_cmd(struct ccp_cmd_queue *cmd_q, struct ccp_cmd *cmd) | |
36cf515b GH |
630 | { |
631 | struct ccp_aes_engine *aes = &cmd->u.aes; | |
632 | struct ccp_dm_workarea key, ctx, final_wa, tag; | |
633 | struct ccp_data src, dst; | |
634 | struct ccp_data aad; | |
635 | struct ccp_op op; | |
36cf515b | 636 | unsigned int dm_offset; |
9f00baf7 | 637 | unsigned int authsize; |
20e833dc | 638 | unsigned int jobid; |
36cf515b GH |
639 | unsigned int ilen; |
640 | bool in_place = true; /* Default value */ | |
d9dd5ef3 | 641 | __be64 *final; |
36cf515b GH |
642 | int ret; |
643 | ||
644 | struct scatterlist *p_inp, sg_inp[2]; | |
645 | struct scatterlist *p_tag, sg_tag[2]; | |
646 | struct scatterlist *p_outp, sg_outp[2]; | |
647 | struct scatterlist *p_aad; | |
648 | ||
649 | if (!aes->iv) | |
650 | return -EINVAL; | |
651 | ||
652 | if (!((aes->key_len == AES_KEYSIZE_128) || | |
653 | (aes->key_len == AES_KEYSIZE_192) || | |
654 | (aes->key_len == AES_KEYSIZE_256))) | |
655 | return -EINVAL; | |
656 | ||
657 | if (!aes->key) /* Gotta have a key SGL */ | |
658 | return -EINVAL; | |
659 | ||
9f00baf7 GH |
660 | /* Zero defaults to 16 bytes, the maximum size */ |
661 | authsize = aes->authsize ? aes->authsize : AES_BLOCK_SIZE; | |
662 | switch (authsize) { | |
663 | case 16: | |
664 | case 15: | |
665 | case 14: | |
666 | case 13: | |
667 | case 12: | |
668 | case 8: | |
669 | case 4: | |
670 | break; | |
671 | default: | |
672 | return -EINVAL; | |
673 | } | |
674 | ||
36cf515b GH |
675 | /* First, decompose the source buffer into AAD & PT, |
676 | * and the destination buffer into AAD, CT & tag, or | |
677 | * the input into CT & tag. | |
678 | * It is expected that the input and output SGs will | |
679 | * be valid, even if the AAD and input lengths are 0. | |
680 | */ | |
681 | p_aad = aes->src; | |
682 | p_inp = scatterwalk_ffwd(sg_inp, aes->src, aes->aad_len); | |
683 | p_outp = scatterwalk_ffwd(sg_outp, aes->dst, aes->aad_len); | |
684 | if (aes->action == CCP_AES_ACTION_ENCRYPT) { | |
685 | ilen = aes->src_len; | |
686 | p_tag = scatterwalk_ffwd(sg_tag, p_outp, ilen); | |
687 | } else { | |
688 | /* Input length for decryption includes tag */ | |
9f00baf7 | 689 | ilen = aes->src_len - authsize; |
36cf515b GH |
690 | p_tag = scatterwalk_ffwd(sg_tag, p_inp, ilen); |
691 | } | |
692 | ||
20e833dc HG |
693 | jobid = CCP_NEW_JOBID(cmd_q->ccp); |
694 | ||
36cf515b GH |
695 | memset(&op, 0, sizeof(op)); |
696 | op.cmd_q = cmd_q; | |
20e833dc | 697 | op.jobid = jobid; |
36cf515b GH |
698 | op.sb_key = cmd_q->sb_key; /* Pre-allocated */ |
699 | op.sb_ctx = cmd_q->sb_ctx; /* Pre-allocated */ | |
700 | op.init = 1; | |
701 | op.u.aes.type = aes->type; | |
702 | ||
703 | /* Copy the key to the LSB */ | |
704 | ret = ccp_init_dm_workarea(&key, cmd_q, | |
705 | CCP_AES_CTX_SB_COUNT * CCP_SB_BYTES, | |
706 | DMA_TO_DEVICE); | |
707 | if (ret) | |
708 | return ret; | |
709 | ||
710 | dm_offset = CCP_SB_BYTES - aes->key_len; | |
b698a9f4 GH |
711 | ret = ccp_set_dm_area(&key, dm_offset, aes->key, 0, aes->key_len); |
712 | if (ret) | |
713 | goto e_key; | |
36cf515b GH |
714 | ret = ccp_copy_to_sb(cmd_q, &key, op.jobid, op.sb_key, |
715 | CCP_PASSTHRU_BYTESWAP_256BIT); | |
716 | if (ret) { | |
717 | cmd->engine_error = cmd_q->cmd_error; | |
718 | goto e_key; | |
719 | } | |
720 | ||
721 | /* Copy the context (IV) to the LSB. | |
722 | * There is an assumption here that the IV is 96 bits in length, plus | |
723 | * a nonce of 32 bits. If no IV is present, use a zeroed buffer. | |
724 | */ | |
725 | ret = ccp_init_dm_workarea(&ctx, cmd_q, | |
726 | CCP_AES_CTX_SB_COUNT * CCP_SB_BYTES, | |
727 | DMA_BIDIRECTIONAL); | |
728 | if (ret) | |
729 | goto e_key; | |
730 | ||
731 | dm_offset = CCP_AES_CTX_SB_COUNT * CCP_SB_BYTES - aes->iv_len; | |
b698a9f4 GH |
732 | ret = ccp_set_dm_area(&ctx, dm_offset, aes->iv, 0, aes->iv_len); |
733 | if (ret) | |
734 | goto e_ctx; | |
36cf515b GH |
735 | |
736 | ret = ccp_copy_to_sb(cmd_q, &ctx, op.jobid, op.sb_ctx, | |
737 | CCP_PASSTHRU_BYTESWAP_256BIT); | |
738 | if (ret) { | |
739 | cmd->engine_error = cmd_q->cmd_error; | |
740 | goto e_ctx; | |
741 | } | |
742 | ||
743 | op.init = 1; | |
744 | if (aes->aad_len > 0) { | |
745 | /* Step 1: Run a GHASH over the Additional Authenticated Data */ | |
746 | ret = ccp_init_data(&aad, cmd_q, p_aad, aes->aad_len, | |
747 | AES_BLOCK_SIZE, | |
748 | DMA_TO_DEVICE); | |
749 | if (ret) | |
750 | goto e_ctx; | |
751 | ||
752 | op.u.aes.mode = CCP_AES_MODE_GHASH; | |
753 | op.u.aes.action = CCP_AES_GHASHAAD; | |
754 | ||
755 | while (aad.sg_wa.bytes_left) { | |
756 | ccp_prepare_data(&aad, NULL, &op, AES_BLOCK_SIZE, true); | |
757 | ||
758 | ret = cmd_q->ccp->vdata->perform->aes(&op); | |
759 | if (ret) { | |
760 | cmd->engine_error = cmd_q->cmd_error; | |
761 | goto e_aad; | |
762 | } | |
763 | ||
764 | ccp_process_data(&aad, NULL, &op); | |
765 | op.init = 0; | |
766 | } | |
767 | } | |
768 | ||
769 | op.u.aes.mode = CCP_AES_MODE_GCTR; | |
770 | op.u.aes.action = aes->action; | |
771 | ||
772 | if (ilen > 0) { | |
773 | /* Step 2: Run a GCTR over the plaintext */ | |
774 | in_place = (sg_virt(p_inp) == sg_virt(p_outp)) ? true : false; | |
775 | ||
776 | ret = ccp_init_data(&src, cmd_q, p_inp, ilen, | |
777 | AES_BLOCK_SIZE, | |
778 | in_place ? DMA_BIDIRECTIONAL | |
779 | : DMA_TO_DEVICE); | |
780 | if (ret) | |
781 | goto e_ctx; | |
782 | ||
783 | if (in_place) { | |
784 | dst = src; | |
785 | } else { | |
786 | ret = ccp_init_data(&dst, cmd_q, p_outp, ilen, | |
787 | AES_BLOCK_SIZE, DMA_FROM_DEVICE); | |
788 | if (ret) | |
789 | goto e_src; | |
790 | } | |
791 | ||
792 | op.soc = 0; | |
793 | op.eom = 0; | |
794 | op.init = 1; | |
795 | while (src.sg_wa.bytes_left) { | |
796 | ccp_prepare_data(&src, &dst, &op, AES_BLOCK_SIZE, true); | |
797 | if (!src.sg_wa.bytes_left) { | |
e2664ecb | 798 | unsigned int nbytes = ilen % AES_BLOCK_SIZE; |
36cf515b GH |
799 | |
800 | if (nbytes) { | |
801 | op.eom = 1; | |
802 | op.u.aes.size = (nbytes * 8) - 1; | |
803 | } | |
804 | } | |
805 | ||
806 | ret = cmd_q->ccp->vdata->perform->aes(&op); | |
807 | if (ret) { | |
808 | cmd->engine_error = cmd_q->cmd_error; | |
809 | goto e_dst; | |
810 | } | |
811 | ||
812 | ccp_process_data(&src, &dst, &op); | |
813 | op.init = 0; | |
814 | } | |
815 | } | |
816 | ||
817 | /* Step 3: Update the IV portion of the context with the original IV */ | |
818 | ret = ccp_copy_from_sb(cmd_q, &ctx, op.jobid, op.sb_ctx, | |
819 | CCP_PASSTHRU_BYTESWAP_256BIT); | |
820 | if (ret) { | |
821 | cmd->engine_error = cmd_q->cmd_error; | |
822 | goto e_dst; | |
823 | } | |
824 | ||
b698a9f4 GH |
825 | ret = ccp_set_dm_area(&ctx, dm_offset, aes->iv, 0, aes->iv_len); |
826 | if (ret) | |
827 | goto e_dst; | |
36cf515b GH |
828 | |
829 | ret = ccp_copy_to_sb(cmd_q, &ctx, op.jobid, op.sb_ctx, | |
830 | CCP_PASSTHRU_BYTESWAP_256BIT); | |
831 | if (ret) { | |
832 | cmd->engine_error = cmd_q->cmd_error; | |
833 | goto e_dst; | |
834 | } | |
835 | ||
836 | /* Step 4: Concatenate the lengths of the AAD and source, and | |
837 | * hash that 16 byte buffer. | |
838 | */ | |
839 | ret = ccp_init_dm_workarea(&final_wa, cmd_q, AES_BLOCK_SIZE, | |
840 | DMA_BIDIRECTIONAL); | |
841 | if (ret) | |
842 | goto e_dst; | |
d9dd5ef3 | 843 | final = (__be64 *)final_wa.address; |
36cf515b GH |
844 | final[0] = cpu_to_be64(aes->aad_len * 8); |
845 | final[1] = cpu_to_be64(ilen * 8); | |
846 | ||
20e833dc HG |
847 | memset(&op, 0, sizeof(op)); |
848 | op.cmd_q = cmd_q; | |
849 | op.jobid = jobid; | |
850 | op.sb_key = cmd_q->sb_key; /* Pre-allocated */ | |
851 | op.sb_ctx = cmd_q->sb_ctx; /* Pre-allocated */ | |
852 | op.init = 1; | |
853 | op.u.aes.type = aes->type; | |
36cf515b GH |
854 | op.u.aes.mode = CCP_AES_MODE_GHASH; |
855 | op.u.aes.action = CCP_AES_GHASHFINAL; | |
856 | op.src.type = CCP_MEMTYPE_SYSTEM; | |
857 | op.src.u.dma.address = final_wa.dma.address; | |
858 | op.src.u.dma.length = AES_BLOCK_SIZE; | |
859 | op.dst.type = CCP_MEMTYPE_SYSTEM; | |
860 | op.dst.u.dma.address = final_wa.dma.address; | |
861 | op.dst.u.dma.length = AES_BLOCK_SIZE; | |
862 | op.eom = 1; | |
863 | op.u.aes.size = 0; | |
864 | ret = cmd_q->ccp->vdata->perform->aes(&op); | |
865 | if (ret) | |
866 | goto e_dst; | |
867 | ||
868 | if (aes->action == CCP_AES_ACTION_ENCRYPT) { | |
869 | /* Put the ciphered tag after the ciphertext. */ | |
9f00baf7 | 870 | ccp_get_dm_area(&final_wa, 0, p_tag, 0, authsize); |
36cf515b GH |
871 | } else { |
872 | /* Does this ciphered tag match the input? */ | |
9f00baf7 | 873 | ret = ccp_init_dm_workarea(&tag, cmd_q, authsize, |
36cf515b GH |
874 | DMA_BIDIRECTIONAL); |
875 | if (ret) | |
876 | goto e_tag; | |
9f00baf7 | 877 | ret = ccp_set_dm_area(&tag, 0, p_tag, 0, authsize); |
b698a9f4 GH |
878 | if (ret) |
879 | goto e_tag; | |
36cf515b | 880 | |
538a5a07 | 881 | ret = crypto_memneq(tag.address, final_wa.address, |
9f00baf7 | 882 | authsize) ? -EBADMSG : 0; |
36cf515b GH |
883 | ccp_dm_free(&tag); |
884 | } | |
885 | ||
886 | e_tag: | |
887 | ccp_dm_free(&final_wa); | |
888 | ||
889 | e_dst: | |
25e44338 | 890 | if (ilen > 0 && !in_place) |
36cf515b GH |
891 | ccp_free_data(&dst, cmd_q); |
892 | ||
893 | e_src: | |
25e44338 | 894 | if (ilen > 0) |
36cf515b GH |
895 | ccp_free_data(&src, cmd_q); |
896 | ||
897 | e_aad: | |
898 | if (aes->aad_len) | |
899 | ccp_free_data(&aad, cmd_q); | |
900 | ||
901 | e_ctx: | |
902 | ccp_dm_free(&ctx); | |
903 | ||
904 | e_key: | |
905 | ccp_dm_free(&key); | |
906 | ||
907 | return ret; | |
908 | } | |
909 | ||
72c8117a AB |
910 | static noinline_for_stack int |
911 | ccp_run_aes_cmd(struct ccp_cmd_queue *cmd_q, struct ccp_cmd *cmd) | |
63b94509 TL |
912 | { |
913 | struct ccp_aes_engine *aes = &cmd->u.aes; | |
914 | struct ccp_dm_workarea key, ctx; | |
915 | struct ccp_data src, dst; | |
916 | struct ccp_op op; | |
917 | unsigned int dm_offset; | |
918 | bool in_place = false; | |
919 | int ret; | |
920 | ||
63b94509 TL |
921 | if (!((aes->key_len == AES_KEYSIZE_128) || |
922 | (aes->key_len == AES_KEYSIZE_192) || | |
923 | (aes->key_len == AES_KEYSIZE_256))) | |
924 | return -EINVAL; | |
925 | ||
926 | if (((aes->mode == CCP_AES_MODE_ECB) || | |
499df967 | 927 | (aes->mode == CCP_AES_MODE_CBC)) && |
63b94509 TL |
928 | (aes->src_len & (AES_BLOCK_SIZE - 1))) |
929 | return -EINVAL; | |
930 | ||
931 | if (!aes->key || !aes->src || !aes->dst) | |
932 | return -EINVAL; | |
933 | ||
934 | if (aes->mode != CCP_AES_MODE_ECB) { | |
935 | if (aes->iv_len != AES_BLOCK_SIZE) | |
936 | return -EINVAL; | |
937 | ||
938 | if (!aes->iv) | |
939 | return -EINVAL; | |
940 | } | |
941 | ||
956ee21a GH |
942 | BUILD_BUG_ON(CCP_AES_KEY_SB_COUNT != 1); |
943 | BUILD_BUG_ON(CCP_AES_CTX_SB_COUNT != 1); | |
63b94509 TL |
944 | |
945 | ret = -EIO; | |
946 | memset(&op, 0, sizeof(op)); | |
947 | op.cmd_q = cmd_q; | |
4b394a23 | 948 | op.jobid = CCP_NEW_JOBID(cmd_q->ccp); |
956ee21a GH |
949 | op.sb_key = cmd_q->sb_key; |
950 | op.sb_ctx = cmd_q->sb_ctx; | |
63b94509 TL |
951 | op.init = (aes->mode == CCP_AES_MODE_ECB) ? 0 : 1; |
952 | op.u.aes.type = aes->type; | |
953 | op.u.aes.mode = aes->mode; | |
954 | op.u.aes.action = aes->action; | |
955 | ||
956ee21a | 956 | /* All supported key sizes fit in a single (32-byte) SB entry |
63b94509 TL |
957 | * and must be in little endian format. Use the 256-bit byte |
958 | * swap passthru option to convert from big endian to little | |
959 | * endian. | |
960 | */ | |
961 | ret = ccp_init_dm_workarea(&key, cmd_q, | |
956ee21a | 962 | CCP_AES_KEY_SB_COUNT * CCP_SB_BYTES, |
63b94509 TL |
963 | DMA_TO_DEVICE); |
964 | if (ret) | |
965 | return ret; | |
966 | ||
956ee21a | 967 | dm_offset = CCP_SB_BYTES - aes->key_len; |
b698a9f4 GH |
968 | ret = ccp_set_dm_area(&key, dm_offset, aes->key, 0, aes->key_len); |
969 | if (ret) | |
970 | goto e_key; | |
956ee21a GH |
971 | ret = ccp_copy_to_sb(cmd_q, &key, op.jobid, op.sb_key, |
972 | CCP_PASSTHRU_BYTESWAP_256BIT); | |
63b94509 TL |
973 | if (ret) { |
974 | cmd->engine_error = cmd_q->cmd_error; | |
975 | goto e_key; | |
976 | } | |
977 | ||
956ee21a | 978 | /* The AES context fits in a single (32-byte) SB entry and |
63b94509 TL |
979 | * must be in little endian format. Use the 256-bit byte swap |
980 | * passthru option to convert from big endian to little endian. | |
981 | */ | |
982 | ret = ccp_init_dm_workarea(&ctx, cmd_q, | |
956ee21a | 983 | CCP_AES_CTX_SB_COUNT * CCP_SB_BYTES, |
63b94509 TL |
984 | DMA_BIDIRECTIONAL); |
985 | if (ret) | |
986 | goto e_key; | |
987 | ||
988 | if (aes->mode != CCP_AES_MODE_ECB) { | |
4b394a23 | 989 | /* Load the AES context - convert to LE */ |
956ee21a | 990 | dm_offset = CCP_SB_BYTES - AES_BLOCK_SIZE; |
b698a9f4 GH |
991 | ret = ccp_set_dm_area(&ctx, dm_offset, aes->iv, 0, aes->iv_len); |
992 | if (ret) | |
993 | goto e_ctx; | |
956ee21a GH |
994 | ret = ccp_copy_to_sb(cmd_q, &ctx, op.jobid, op.sb_ctx, |
995 | CCP_PASSTHRU_BYTESWAP_256BIT); | |
63b94509 TL |
996 | if (ret) { |
997 | cmd->engine_error = cmd_q->cmd_error; | |
998 | goto e_ctx; | |
999 | } | |
1000 | } | |
f7cc02b3 GH |
1001 | switch (aes->mode) { |
1002 | case CCP_AES_MODE_CFB: /* CFB128 only */ | |
1003 | case CCP_AES_MODE_CTR: | |
1004 | op.u.aes.size = AES_BLOCK_SIZE * BITS_PER_BYTE - 1; | |
1005 | break; | |
1006 | default: | |
1007 | op.u.aes.size = 0; | |
1008 | } | |
63b94509 TL |
1009 | |
1010 | /* Prepare the input and output data workareas. For in-place | |
1011 | * operations we need to set the dma direction to BIDIRECTIONAL | |
1012 | * and copy the src workarea to the dst workarea. | |
1013 | */ | |
1014 | if (sg_virt(aes->src) == sg_virt(aes->dst)) | |
1015 | in_place = true; | |
1016 | ||
1017 | ret = ccp_init_data(&src, cmd_q, aes->src, aes->src_len, | |
1018 | AES_BLOCK_SIZE, | |
1019 | in_place ? DMA_BIDIRECTIONAL : DMA_TO_DEVICE); | |
1020 | if (ret) | |
1021 | goto e_ctx; | |
1022 | ||
8db88467 | 1023 | if (in_place) { |
63b94509 | 1024 | dst = src; |
8db88467 | 1025 | } else { |
63b94509 TL |
1026 | ret = ccp_init_data(&dst, cmd_q, aes->dst, aes->src_len, |
1027 | AES_BLOCK_SIZE, DMA_FROM_DEVICE); | |
1028 | if (ret) | |
1029 | goto e_src; | |
1030 | } | |
1031 | ||
1032 | /* Send data to the CCP AES engine */ | |
1033 | while (src.sg_wa.bytes_left) { | |
1034 | ccp_prepare_data(&src, &dst, &op, AES_BLOCK_SIZE, true); | |
1035 | if (!src.sg_wa.bytes_left) { | |
1036 | op.eom = 1; | |
1037 | ||
1038 | /* Since we don't retrieve the AES context in ECB | |
1039 | * mode we have to wait for the operation to complete | |
1040 | * on the last piece of data | |
1041 | */ | |
1042 | if (aes->mode == CCP_AES_MODE_ECB) | |
1043 | op.soc = 1; | |
1044 | } | |
1045 | ||
a43eb985 | 1046 | ret = cmd_q->ccp->vdata->perform->aes(&op); |
63b94509 TL |
1047 | if (ret) { |
1048 | cmd->engine_error = cmd_q->cmd_error; | |
1049 | goto e_dst; | |
1050 | } | |
1051 | ||
1052 | ccp_process_data(&src, &dst, &op); | |
1053 | } | |
1054 | ||
1055 | if (aes->mode != CCP_AES_MODE_ECB) { | |
1056 | /* Retrieve the AES context - convert from LE to BE using | |
1057 | * 32-byte (256-bit) byteswapping | |
1058 | */ | |
956ee21a GH |
1059 | ret = ccp_copy_from_sb(cmd_q, &ctx, op.jobid, op.sb_ctx, |
1060 | CCP_PASSTHRU_BYTESWAP_256BIT); | |
63b94509 TL |
1061 | if (ret) { |
1062 | cmd->engine_error = cmd_q->cmd_error; | |
1063 | goto e_dst; | |
1064 | } | |
1065 | ||
1066 | /* ...but we only need AES_BLOCK_SIZE bytes */ | |
956ee21a | 1067 | dm_offset = CCP_SB_BYTES - AES_BLOCK_SIZE; |
63b94509 TL |
1068 | ccp_get_dm_area(&ctx, dm_offset, aes->iv, 0, aes->iv_len); |
1069 | } | |
1070 | ||
1071 | e_dst: | |
1072 | if (!in_place) | |
1073 | ccp_free_data(&dst, cmd_q); | |
1074 | ||
1075 | e_src: | |
1076 | ccp_free_data(&src, cmd_q); | |
1077 | ||
1078 | e_ctx: | |
1079 | ccp_dm_free(&ctx); | |
1080 | ||
1081 | e_key: | |
1082 | ccp_dm_free(&key); | |
1083 | ||
1084 | return ret; | |
1085 | } | |
1086 | ||
72c8117a AB |
1087 | static noinline_for_stack int |
1088 | ccp_run_xts_aes_cmd(struct ccp_cmd_queue *cmd_q, struct ccp_cmd *cmd) | |
63b94509 TL |
1089 | { |
1090 | struct ccp_xts_aes_engine *xts = &cmd->u.xts; | |
1091 | struct ccp_dm_workarea key, ctx; | |
1092 | struct ccp_data src, dst; | |
1093 | struct ccp_op op; | |
1094 | unsigned int unit_size, dm_offset; | |
1095 | bool in_place = false; | |
e652399e GH |
1096 | unsigned int sb_count; |
1097 | enum ccp_aes_type aestype; | |
63b94509 TL |
1098 | int ret; |
1099 | ||
1100 | switch (xts->unit_size) { | |
1101 | case CCP_XTS_AES_UNIT_SIZE_16: | |
1102 | unit_size = 16; | |
1103 | break; | |
1104 | case CCP_XTS_AES_UNIT_SIZE_512: | |
1105 | unit_size = 512; | |
1106 | break; | |
1107 | case CCP_XTS_AES_UNIT_SIZE_1024: | |
1108 | unit_size = 1024; | |
1109 | break; | |
1110 | case CCP_XTS_AES_UNIT_SIZE_2048: | |
1111 | unit_size = 2048; | |
1112 | break; | |
1113 | case CCP_XTS_AES_UNIT_SIZE_4096: | |
1114 | unit_size = 4096; | |
1115 | break; | |
1116 | ||
1117 | default: | |
1118 | return -EINVAL; | |
1119 | } | |
1120 | ||
e652399e GH |
1121 | if (xts->key_len == AES_KEYSIZE_128) |
1122 | aestype = CCP_AES_TYPE_128; | |
5060ffc9 GH |
1123 | else if (xts->key_len == AES_KEYSIZE_256) |
1124 | aestype = CCP_AES_TYPE_256; | |
e652399e | 1125 | else |
63b94509 TL |
1126 | return -EINVAL; |
1127 | ||
1128 | if (!xts->final && (xts->src_len & (AES_BLOCK_SIZE - 1))) | |
1129 | return -EINVAL; | |
1130 | ||
1131 | if (xts->iv_len != AES_BLOCK_SIZE) | |
1132 | return -EINVAL; | |
1133 | ||
1134 | if (!xts->key || !xts->iv || !xts->src || !xts->dst) | |
1135 | return -EINVAL; | |
1136 | ||
956ee21a GH |
1137 | BUILD_BUG_ON(CCP_XTS_AES_KEY_SB_COUNT != 1); |
1138 | BUILD_BUG_ON(CCP_XTS_AES_CTX_SB_COUNT != 1); | |
63b94509 TL |
1139 | |
1140 | ret = -EIO; | |
1141 | memset(&op, 0, sizeof(op)); | |
1142 | op.cmd_q = cmd_q; | |
4b394a23 | 1143 | op.jobid = CCP_NEW_JOBID(cmd_q->ccp); |
956ee21a GH |
1144 | op.sb_key = cmd_q->sb_key; |
1145 | op.sb_ctx = cmd_q->sb_ctx; | |
63b94509 | 1146 | op.init = 1; |
e652399e | 1147 | op.u.xts.type = aestype; |
63b94509 TL |
1148 | op.u.xts.action = xts->action; |
1149 | op.u.xts.unit_size = xts->unit_size; | |
1150 | ||
e652399e GH |
1151 | /* A version 3 device only supports 128-bit keys, which fits into a |
1152 | * single SB entry. A version 5 device uses a 512-bit vector, so two | |
1153 | * SB entries. | |
63b94509 | 1154 | */ |
e652399e GH |
1155 | if (cmd_q->ccp->vdata->version == CCP_VERSION(3, 0)) |
1156 | sb_count = CCP_XTS_AES_KEY_SB_COUNT; | |
1157 | else | |
1158 | sb_count = CCP5_XTS_AES_KEY_SB_COUNT; | |
63b94509 | 1159 | ret = ccp_init_dm_workarea(&key, cmd_q, |
e652399e | 1160 | sb_count * CCP_SB_BYTES, |
63b94509 TL |
1161 | DMA_TO_DEVICE); |
1162 | if (ret) | |
1163 | return ret; | |
1164 | ||
e652399e GH |
1165 | if (cmd_q->ccp->vdata->version == CCP_VERSION(3, 0)) { |
1166 | /* All supported key sizes must be in little endian format. | |
1167 | * Use the 256-bit byte swap passthru option to convert from | |
1168 | * big endian to little endian. | |
1169 | */ | |
1170 | dm_offset = CCP_SB_BYTES - AES_KEYSIZE_128; | |
b698a9f4 GH |
1171 | ret = ccp_set_dm_area(&key, dm_offset, xts->key, 0, xts->key_len); |
1172 | if (ret) | |
1173 | goto e_key; | |
1174 | ret = ccp_set_dm_area(&key, 0, xts->key, xts->key_len, xts->key_len); | |
1175 | if (ret) | |
1176 | goto e_key; | |
e652399e GH |
1177 | } else { |
1178 | /* Version 5 CCPs use a 512-bit space for the key: each portion | |
1179 | * occupies 256 bits, or one entire slot, and is zero-padded. | |
1180 | */ | |
1181 | unsigned int pad; | |
1182 | ||
1183 | dm_offset = CCP_SB_BYTES; | |
1184 | pad = dm_offset - xts->key_len; | |
b698a9f4 GH |
1185 | ret = ccp_set_dm_area(&key, pad, xts->key, 0, xts->key_len); |
1186 | if (ret) | |
1187 | goto e_key; | |
1188 | ret = ccp_set_dm_area(&key, dm_offset + pad, xts->key, | |
1189 | xts->key_len, xts->key_len); | |
1190 | if (ret) | |
1191 | goto e_key; | |
e652399e | 1192 | } |
956ee21a GH |
1193 | ret = ccp_copy_to_sb(cmd_q, &key, op.jobid, op.sb_key, |
1194 | CCP_PASSTHRU_BYTESWAP_256BIT); | |
63b94509 TL |
1195 | if (ret) { |
1196 | cmd->engine_error = cmd_q->cmd_error; | |
1197 | goto e_key; | |
1198 | } | |
1199 | ||
956ee21a | 1200 | /* The AES context fits in a single (32-byte) SB entry and |
63b94509 TL |
1201 | * for XTS is already in little endian format so no byte swapping |
1202 | * is needed. | |
1203 | */ | |
1204 | ret = ccp_init_dm_workarea(&ctx, cmd_q, | |
956ee21a | 1205 | CCP_XTS_AES_CTX_SB_COUNT * CCP_SB_BYTES, |
63b94509 TL |
1206 | DMA_BIDIRECTIONAL); |
1207 | if (ret) | |
1208 | goto e_key; | |
1209 | ||
b698a9f4 GH |
1210 | ret = ccp_set_dm_area(&ctx, 0, xts->iv, 0, xts->iv_len); |
1211 | if (ret) | |
1212 | goto e_ctx; | |
956ee21a GH |
1213 | ret = ccp_copy_to_sb(cmd_q, &ctx, op.jobid, op.sb_ctx, |
1214 | CCP_PASSTHRU_BYTESWAP_NOOP); | |
63b94509 TL |
1215 | if (ret) { |
1216 | cmd->engine_error = cmd_q->cmd_error; | |
1217 | goto e_ctx; | |
1218 | } | |
1219 | ||
1220 | /* Prepare the input and output data workareas. For in-place | |
1221 | * operations we need to set the dma direction to BIDIRECTIONAL | |
1222 | * and copy the src workarea to the dst workarea. | |
1223 | */ | |
1224 | if (sg_virt(xts->src) == sg_virt(xts->dst)) | |
1225 | in_place = true; | |
1226 | ||
1227 | ret = ccp_init_data(&src, cmd_q, xts->src, xts->src_len, | |
1228 | unit_size, | |
1229 | in_place ? DMA_BIDIRECTIONAL : DMA_TO_DEVICE); | |
1230 | if (ret) | |
1231 | goto e_ctx; | |
1232 | ||
8db88467 | 1233 | if (in_place) { |
63b94509 | 1234 | dst = src; |
8db88467 | 1235 | } else { |
63b94509 TL |
1236 | ret = ccp_init_data(&dst, cmd_q, xts->dst, xts->src_len, |
1237 | unit_size, DMA_FROM_DEVICE); | |
1238 | if (ret) | |
1239 | goto e_src; | |
1240 | } | |
1241 | ||
1242 | /* Send data to the CCP AES engine */ | |
1243 | while (src.sg_wa.bytes_left) { | |
1244 | ccp_prepare_data(&src, &dst, &op, unit_size, true); | |
1245 | if (!src.sg_wa.bytes_left) | |
1246 | op.eom = 1; | |
1247 | ||
a43eb985 | 1248 | ret = cmd_q->ccp->vdata->perform->xts_aes(&op); |
63b94509 TL |
1249 | if (ret) { |
1250 | cmd->engine_error = cmd_q->cmd_error; | |
1251 | goto e_dst; | |
1252 | } | |
1253 | ||
1254 | ccp_process_data(&src, &dst, &op); | |
1255 | } | |
1256 | ||
1257 | /* Retrieve the AES context - convert from LE to BE using | |
1258 | * 32-byte (256-bit) byteswapping | |
1259 | */ | |
956ee21a GH |
1260 | ret = ccp_copy_from_sb(cmd_q, &ctx, op.jobid, op.sb_ctx, |
1261 | CCP_PASSTHRU_BYTESWAP_256BIT); | |
63b94509 TL |
1262 | if (ret) { |
1263 | cmd->engine_error = cmd_q->cmd_error; | |
1264 | goto e_dst; | |
1265 | } | |
1266 | ||
1267 | /* ...but we only need AES_BLOCK_SIZE bytes */ | |
956ee21a | 1268 | dm_offset = CCP_SB_BYTES - AES_BLOCK_SIZE; |
63b94509 TL |
1269 | ccp_get_dm_area(&ctx, dm_offset, xts->iv, 0, xts->iv_len); |
1270 | ||
1271 | e_dst: | |
1272 | if (!in_place) | |
1273 | ccp_free_data(&dst, cmd_q); | |
1274 | ||
1275 | e_src: | |
1276 | ccp_free_data(&src, cmd_q); | |
1277 | ||
1278 | e_ctx: | |
1279 | ccp_dm_free(&ctx); | |
1280 | ||
1281 | e_key: | |
1282 | ccp_dm_free(&key); | |
1283 | ||
1284 | return ret; | |
1285 | } | |
1286 | ||
72c8117a AB |
1287 | static noinline_for_stack int |
1288 | ccp_run_des3_cmd(struct ccp_cmd_queue *cmd_q, struct ccp_cmd *cmd) | |
990672d4 GH |
1289 | { |
1290 | struct ccp_des3_engine *des3 = &cmd->u.des3; | |
1291 | ||
1292 | struct ccp_dm_workarea key, ctx; | |
1293 | struct ccp_data src, dst; | |
1294 | struct ccp_op op; | |
1295 | unsigned int dm_offset; | |
1296 | unsigned int len_singlekey; | |
1297 | bool in_place = false; | |
1298 | int ret; | |
1299 | ||
1300 | /* Error checks */ | |
89646fdd HG |
1301 | if (cmd_q->ccp->vdata->version < CCP_VERSION(5, 0)) |
1302 | return -EINVAL; | |
1303 | ||
990672d4 GH |
1304 | if (!cmd_q->ccp->vdata->perform->des3) |
1305 | return -EINVAL; | |
1306 | ||
1307 | if (des3->key_len != DES3_EDE_KEY_SIZE) | |
1308 | return -EINVAL; | |
1309 | ||
1310 | if (((des3->mode == CCP_DES3_MODE_ECB) || | |
1311 | (des3->mode == CCP_DES3_MODE_CBC)) && | |
1312 | (des3->src_len & (DES3_EDE_BLOCK_SIZE - 1))) | |
1313 | return -EINVAL; | |
1314 | ||
1315 | if (!des3->key || !des3->src || !des3->dst) | |
1316 | return -EINVAL; | |
1317 | ||
1318 | if (des3->mode != CCP_DES3_MODE_ECB) { | |
1319 | if (des3->iv_len != DES3_EDE_BLOCK_SIZE) | |
1320 | return -EINVAL; | |
1321 | ||
1322 | if (!des3->iv) | |
1323 | return -EINVAL; | |
1324 | } | |
1325 | ||
990672d4 GH |
1326 | /* Zero out all the fields of the command desc */ |
1327 | memset(&op, 0, sizeof(op)); | |
1328 | ||
1329 | /* Set up the Function field */ | |
1330 | op.cmd_q = cmd_q; | |
1331 | op.jobid = CCP_NEW_JOBID(cmd_q->ccp); | |
1332 | op.sb_key = cmd_q->sb_key; | |
1333 | ||
1334 | op.init = (des3->mode == CCP_DES3_MODE_ECB) ? 0 : 1; | |
1335 | op.u.des3.type = des3->type; | |
1336 | op.u.des3.mode = des3->mode; | |
1337 | op.u.des3.action = des3->action; | |
1338 | ||
1339 | /* | |
1340 | * All supported key sizes fit in a single (32-byte) KSB entry and | |
1341 | * (like AES) must be in little endian format. Use the 256-bit byte | |
1342 | * swap passthru option to convert from big endian to little endian. | |
1343 | */ | |
1344 | ret = ccp_init_dm_workarea(&key, cmd_q, | |
1345 | CCP_DES3_KEY_SB_COUNT * CCP_SB_BYTES, | |
1346 | DMA_TO_DEVICE); | |
1347 | if (ret) | |
1348 | return ret; | |
1349 | ||
1350 | /* | |
1351 | * The contents of the key triplet are in the reverse order of what | |
1352 | * is required by the engine. Copy the 3 pieces individually to put | |
1353 | * them where they belong. | |
1354 | */ | |
1355 | dm_offset = CCP_SB_BYTES - des3->key_len; /* Basic offset */ | |
1356 | ||
1357 | len_singlekey = des3->key_len / 3; | |
b698a9f4 GH |
1358 | ret = ccp_set_dm_area(&key, dm_offset + 2 * len_singlekey, |
1359 | des3->key, 0, len_singlekey); | |
1360 | if (ret) | |
1361 | goto e_key; | |
1362 | ret = ccp_set_dm_area(&key, dm_offset + len_singlekey, | |
1363 | des3->key, len_singlekey, len_singlekey); | |
1364 | if (ret) | |
1365 | goto e_key; | |
1366 | ret = ccp_set_dm_area(&key, dm_offset, | |
1367 | des3->key, 2 * len_singlekey, len_singlekey); | |
1368 | if (ret) | |
1369 | goto e_key; | |
990672d4 GH |
1370 | |
1371 | /* Copy the key to the SB */ | |
1372 | ret = ccp_copy_to_sb(cmd_q, &key, op.jobid, op.sb_key, | |
1373 | CCP_PASSTHRU_BYTESWAP_256BIT); | |
1374 | if (ret) { | |
1375 | cmd->engine_error = cmd_q->cmd_error; | |
1376 | goto e_key; | |
1377 | } | |
1378 | ||
1379 | /* | |
1380 | * The DES3 context fits in a single (32-byte) KSB entry and | |
1381 | * must be in little endian format. Use the 256-bit byte swap | |
1382 | * passthru option to convert from big endian to little endian. | |
1383 | */ | |
1384 | if (des3->mode != CCP_DES3_MODE_ECB) { | |
990672d4 GH |
1385 | op.sb_ctx = cmd_q->sb_ctx; |
1386 | ||
1387 | ret = ccp_init_dm_workarea(&ctx, cmd_q, | |
1388 | CCP_DES3_CTX_SB_COUNT * CCP_SB_BYTES, | |
1389 | DMA_BIDIRECTIONAL); | |
1390 | if (ret) | |
1391 | goto e_key; | |
1392 | ||
1393 | /* Load the context into the LSB */ | |
1394 | dm_offset = CCP_SB_BYTES - des3->iv_len; | |
b698a9f4 GH |
1395 | ret = ccp_set_dm_area(&ctx, dm_offset, des3->iv, 0, |
1396 | des3->iv_len); | |
1397 | if (ret) | |
1398 | goto e_ctx; | |
990672d4 | 1399 | |
990672d4 | 1400 | ret = ccp_copy_to_sb(cmd_q, &ctx, op.jobid, op.sb_ctx, |
89646fdd | 1401 | CCP_PASSTHRU_BYTESWAP_256BIT); |
990672d4 GH |
1402 | if (ret) { |
1403 | cmd->engine_error = cmd_q->cmd_error; | |
1404 | goto e_ctx; | |
1405 | } | |
1406 | } | |
1407 | ||
1408 | /* | |
1409 | * Prepare the input and output data workareas. For in-place | |
1410 | * operations we need to set the dma direction to BIDIRECTIONAL | |
1411 | * and copy the src workarea to the dst workarea. | |
1412 | */ | |
1413 | if (sg_virt(des3->src) == sg_virt(des3->dst)) | |
1414 | in_place = true; | |
1415 | ||
1416 | ret = ccp_init_data(&src, cmd_q, des3->src, des3->src_len, | |
1417 | DES3_EDE_BLOCK_SIZE, | |
1418 | in_place ? DMA_BIDIRECTIONAL : DMA_TO_DEVICE); | |
1419 | if (ret) | |
1420 | goto e_ctx; | |
1421 | ||
1422 | if (in_place) | |
1423 | dst = src; | |
1424 | else { | |
1425 | ret = ccp_init_data(&dst, cmd_q, des3->dst, des3->src_len, | |
1426 | DES3_EDE_BLOCK_SIZE, DMA_FROM_DEVICE); | |
1427 | if (ret) | |
1428 | goto e_src; | |
1429 | } | |
1430 | ||
1431 | /* Send data to the CCP DES3 engine */ | |
1432 | while (src.sg_wa.bytes_left) { | |
1433 | ccp_prepare_data(&src, &dst, &op, DES3_EDE_BLOCK_SIZE, true); | |
1434 | if (!src.sg_wa.bytes_left) { | |
1435 | op.eom = 1; | |
1436 | ||
1437 | /* Since we don't retrieve the context in ECB mode | |
1438 | * we have to wait for the operation to complete | |
1439 | * on the last piece of data | |
1440 | */ | |
1441 | op.soc = 0; | |
1442 | } | |
1443 | ||
1444 | ret = cmd_q->ccp->vdata->perform->des3(&op); | |
1445 | if (ret) { | |
1446 | cmd->engine_error = cmd_q->cmd_error; | |
1447 | goto e_dst; | |
1448 | } | |
1449 | ||
1450 | ccp_process_data(&src, &dst, &op); | |
1451 | } | |
1452 | ||
1453 | if (des3->mode != CCP_DES3_MODE_ECB) { | |
1454 | /* Retrieve the context and make BE */ | |
1455 | ret = ccp_copy_from_sb(cmd_q, &ctx, op.jobid, op.sb_ctx, | |
1456 | CCP_PASSTHRU_BYTESWAP_256BIT); | |
1457 | if (ret) { | |
1458 | cmd->engine_error = cmd_q->cmd_error; | |
1459 | goto e_dst; | |
1460 | } | |
1461 | ||
1462 | /* ...but we only need the last DES3_EDE_BLOCK_SIZE bytes */ | |
990672d4 GH |
1463 | ccp_get_dm_area(&ctx, dm_offset, des3->iv, 0, |
1464 | DES3_EDE_BLOCK_SIZE); | |
1465 | } | |
1466 | e_dst: | |
1467 | if (!in_place) | |
1468 | ccp_free_data(&dst, cmd_q); | |
1469 | ||
1470 | e_src: | |
1471 | ccp_free_data(&src, cmd_q); | |
1472 | ||
1473 | e_ctx: | |
1474 | if (des3->mode != CCP_DES3_MODE_ECB) | |
1475 | ccp_dm_free(&ctx); | |
1476 | ||
1477 | e_key: | |
1478 | ccp_dm_free(&key); | |
1479 | ||
1480 | return ret; | |
1481 | } | |
1482 | ||
72c8117a AB |
1483 | static noinline_for_stack int |
1484 | ccp_run_sha_cmd(struct ccp_cmd_queue *cmd_q, struct ccp_cmd *cmd) | |
63b94509 TL |
1485 | { |
1486 | struct ccp_sha_engine *sha = &cmd->u.sha; | |
1487 | struct ccp_dm_workarea ctx; | |
1488 | struct ccp_data src; | |
1489 | struct ccp_op op; | |
4b394a23 GH |
1490 | unsigned int ioffset, ooffset; |
1491 | unsigned int digest_size; | |
1492 | int sb_count; | |
1493 | const void *init; | |
1494 | u64 block_size; | |
1495 | int ctx_size; | |
63b94509 TL |
1496 | int ret; |
1497 | ||
4b394a23 GH |
1498 | switch (sha->type) { |
1499 | case CCP_SHA_TYPE_1: | |
1500 | if (sha->ctx_len < SHA1_DIGEST_SIZE) | |
1501 | return -EINVAL; | |
1502 | block_size = SHA1_BLOCK_SIZE; | |
1503 | break; | |
1504 | case CCP_SHA_TYPE_224: | |
1505 | if (sha->ctx_len < SHA224_DIGEST_SIZE) | |
1506 | return -EINVAL; | |
1507 | block_size = SHA224_BLOCK_SIZE; | |
1508 | break; | |
1509 | case CCP_SHA_TYPE_256: | |
1510 | if (sha->ctx_len < SHA256_DIGEST_SIZE) | |
1511 | return -EINVAL; | |
1512 | block_size = SHA256_BLOCK_SIZE; | |
1513 | break; | |
ccebcf3f GH |
1514 | case CCP_SHA_TYPE_384: |
1515 | if (cmd_q->ccp->vdata->version < CCP_VERSION(4, 0) | |
1516 | || sha->ctx_len < SHA384_DIGEST_SIZE) | |
1517 | return -EINVAL; | |
1518 | block_size = SHA384_BLOCK_SIZE; | |
1519 | break; | |
1520 | case CCP_SHA_TYPE_512: | |
1521 | if (cmd_q->ccp->vdata->version < CCP_VERSION(4, 0) | |
1522 | || sha->ctx_len < SHA512_DIGEST_SIZE) | |
1523 | return -EINVAL; | |
1524 | block_size = SHA512_BLOCK_SIZE; | |
1525 | break; | |
4b394a23 | 1526 | default: |
63b94509 | 1527 | return -EINVAL; |
4b394a23 | 1528 | } |
63b94509 TL |
1529 | |
1530 | if (!sha->ctx) | |
1531 | return -EINVAL; | |
1532 | ||
4b394a23 | 1533 | if (!sha->final && (sha->src_len & (block_size - 1))) |
63b94509 TL |
1534 | return -EINVAL; |
1535 | ||
4b394a23 GH |
1536 | /* The version 3 device can't handle zero-length input */ |
1537 | if (cmd_q->ccp->vdata->version == CCP_VERSION(3, 0)) { | |
63b94509 | 1538 | |
4b394a23 GH |
1539 | if (!sha->src_len) { |
1540 | unsigned int digest_len; | |
1541 | const u8 *sha_zero; | |
63b94509 | 1542 | |
4b394a23 GH |
1543 | /* Not final, just return */ |
1544 | if (!sha->final) | |
1545 | return 0; | |
63b94509 | 1546 | |
4b394a23 GH |
1547 | /* CCP can't do a zero length sha operation so the |
1548 | * caller must buffer the data. | |
1549 | */ | |
1550 | if (sha->msg_bits) | |
1551 | return -EINVAL; | |
63b94509 | 1552 | |
4b394a23 GH |
1553 | /* The CCP cannot perform zero-length sha operations |
1554 | * so the caller is required to buffer data for the | |
1555 | * final operation. However, a sha operation for a | |
1556 | * message with a total length of zero is valid so | |
1557 | * known values are required to supply the result. | |
1558 | */ | |
1559 | switch (sha->type) { | |
1560 | case CCP_SHA_TYPE_1: | |
1561 | sha_zero = sha1_zero_message_hash; | |
1562 | digest_len = SHA1_DIGEST_SIZE; | |
1563 | break; | |
1564 | case CCP_SHA_TYPE_224: | |
1565 | sha_zero = sha224_zero_message_hash; | |
1566 | digest_len = SHA224_DIGEST_SIZE; | |
1567 | break; | |
1568 | case CCP_SHA_TYPE_256: | |
1569 | sha_zero = sha256_zero_message_hash; | |
1570 | digest_len = SHA256_DIGEST_SIZE; | |
1571 | break; | |
1572 | default: | |
1573 | return -EINVAL; | |
1574 | } | |
63b94509 | 1575 | |
4b394a23 GH |
1576 | scatterwalk_map_and_copy((void *)sha_zero, sha->ctx, 0, |
1577 | digest_len, 1); | |
1578 | ||
1579 | return 0; | |
1580 | } | |
63b94509 TL |
1581 | } |
1582 | ||
4b394a23 GH |
1583 | /* Set variables used throughout */ |
1584 | switch (sha->type) { | |
1585 | case CCP_SHA_TYPE_1: | |
1586 | digest_size = SHA1_DIGEST_SIZE; | |
1587 | init = (void *) ccp_sha1_init; | |
1588 | ctx_size = SHA1_DIGEST_SIZE; | |
1589 | sb_count = 1; | |
1590 | if (cmd_q->ccp->vdata->version != CCP_VERSION(3, 0)) | |
1591 | ooffset = ioffset = CCP_SB_BYTES - SHA1_DIGEST_SIZE; | |
1592 | else | |
1593 | ooffset = ioffset = 0; | |
1594 | break; | |
1595 | case CCP_SHA_TYPE_224: | |
1596 | digest_size = SHA224_DIGEST_SIZE; | |
1597 | init = (void *) ccp_sha224_init; | |
1598 | ctx_size = SHA256_DIGEST_SIZE; | |
1599 | sb_count = 1; | |
1600 | ioffset = 0; | |
1601 | if (cmd_q->ccp->vdata->version != CCP_VERSION(3, 0)) | |
1602 | ooffset = CCP_SB_BYTES - SHA224_DIGEST_SIZE; | |
1603 | else | |
1604 | ooffset = 0; | |
1605 | break; | |
1606 | case CCP_SHA_TYPE_256: | |
1607 | digest_size = SHA256_DIGEST_SIZE; | |
1608 | init = (void *) ccp_sha256_init; | |
1609 | ctx_size = SHA256_DIGEST_SIZE; | |
1610 | sb_count = 1; | |
1611 | ooffset = ioffset = 0; | |
1612 | break; | |
ccebcf3f GH |
1613 | case CCP_SHA_TYPE_384: |
1614 | digest_size = SHA384_DIGEST_SIZE; | |
1615 | init = (void *) ccp_sha384_init; | |
1616 | ctx_size = SHA512_DIGEST_SIZE; | |
1617 | sb_count = 2; | |
1618 | ioffset = 0; | |
1619 | ooffset = 2 * CCP_SB_BYTES - SHA384_DIGEST_SIZE; | |
1620 | break; | |
1621 | case CCP_SHA_TYPE_512: | |
1622 | digest_size = SHA512_DIGEST_SIZE; | |
1623 | init = (void *) ccp_sha512_init; | |
1624 | ctx_size = SHA512_DIGEST_SIZE; | |
1625 | sb_count = 2; | |
1626 | ooffset = ioffset = 0; | |
1627 | break; | |
4b394a23 GH |
1628 | default: |
1629 | ret = -EINVAL; | |
1630 | goto e_data; | |
1631 | } | |
63b94509 | 1632 | |
4b394a23 GH |
1633 | /* For zero-length plaintext the src pointer is ignored; |
1634 | * otherwise both parts must be valid | |
1635 | */ | |
1636 | if (sha->src_len && !sha->src) | |
1637 | return -EINVAL; | |
63b94509 TL |
1638 | |
1639 | memset(&op, 0, sizeof(op)); | |
1640 | op.cmd_q = cmd_q; | |
4b394a23 GH |
1641 | op.jobid = CCP_NEW_JOBID(cmd_q->ccp); |
1642 | op.sb_ctx = cmd_q->sb_ctx; /* Pre-allocated */ | |
63b94509 TL |
1643 | op.u.sha.type = sha->type; |
1644 | op.u.sha.msg_bits = sha->msg_bits; | |
1645 | ||
ccebcf3f GH |
1646 | /* For SHA1/224/256 the context fits in a single (32-byte) SB entry; |
1647 | * SHA384/512 require 2 adjacent SB slots, with the right half in the | |
1648 | * first slot, and the left half in the second. Each portion must then | |
1649 | * be in little endian format: use the 256-bit byte swap option. | |
1650 | */ | |
4b394a23 | 1651 | ret = ccp_init_dm_workarea(&ctx, cmd_q, sb_count * CCP_SB_BYTES, |
63b94509 TL |
1652 | DMA_BIDIRECTIONAL); |
1653 | if (ret) | |
1654 | return ret; | |
c11baa02 | 1655 | if (sha->first) { |
c11baa02 TL |
1656 | switch (sha->type) { |
1657 | case CCP_SHA_TYPE_1: | |
c11baa02 | 1658 | case CCP_SHA_TYPE_224: |
c11baa02 | 1659 | case CCP_SHA_TYPE_256: |
4b394a23 | 1660 | memcpy(ctx.address + ioffset, init, ctx_size); |
c11baa02 | 1661 | break; |
ccebcf3f GH |
1662 | case CCP_SHA_TYPE_384: |
1663 | case CCP_SHA_TYPE_512: | |
1664 | memcpy(ctx.address + ctx_size / 2, init, | |
1665 | ctx_size / 2); | |
1666 | memcpy(ctx.address, init + ctx_size / 2, | |
1667 | ctx_size / 2); | |
1668 | break; | |
c11baa02 TL |
1669 | default: |
1670 | ret = -EINVAL; | |
1671 | goto e_ctx; | |
1672 | } | |
8db88467 | 1673 | } else { |
4b394a23 | 1674 | /* Restore the context */ |
b698a9f4 GH |
1675 | ret = ccp_set_dm_area(&ctx, 0, sha->ctx, 0, |
1676 | sb_count * CCP_SB_BYTES); | |
1677 | if (ret) | |
1678 | goto e_ctx; | |
8db88467 | 1679 | } |
c11baa02 | 1680 | |
956ee21a GH |
1681 | ret = ccp_copy_to_sb(cmd_q, &ctx, op.jobid, op.sb_ctx, |
1682 | CCP_PASSTHRU_BYTESWAP_256BIT); | |
63b94509 TL |
1683 | if (ret) { |
1684 | cmd->engine_error = cmd_q->cmd_error; | |
1685 | goto e_ctx; | |
1686 | } | |
1687 | ||
4b394a23 GH |
1688 | if (sha->src) { |
1689 | /* Send data to the CCP SHA engine; block_size is set above */ | |
1690 | ret = ccp_init_data(&src, cmd_q, sha->src, sha->src_len, | |
1691 | block_size, DMA_TO_DEVICE); | |
1692 | if (ret) | |
1693 | goto e_ctx; | |
63b94509 | 1694 | |
4b394a23 GH |
1695 | while (src.sg_wa.bytes_left) { |
1696 | ccp_prepare_data(&src, NULL, &op, block_size, false); | |
1697 | if (sha->final && !src.sg_wa.bytes_left) | |
1698 | op.eom = 1; | |
1699 | ||
1700 | ret = cmd_q->ccp->vdata->perform->sha(&op); | |
1701 | if (ret) { | |
1702 | cmd->engine_error = cmd_q->cmd_error; | |
1703 | goto e_data; | |
1704 | } | |
63b94509 | 1705 | |
4b394a23 GH |
1706 | ccp_process_data(&src, NULL, &op); |
1707 | } | |
1708 | } else { | |
1709 | op.eom = 1; | |
a43eb985 | 1710 | ret = cmd_q->ccp->vdata->perform->sha(&op); |
63b94509 TL |
1711 | if (ret) { |
1712 | cmd->engine_error = cmd_q->cmd_error; | |
1713 | goto e_data; | |
1714 | } | |
63b94509 TL |
1715 | } |
1716 | ||
1717 | /* Retrieve the SHA context - convert from LE to BE using | |
1718 | * 32-byte (256-bit) byteswapping to BE | |
1719 | */ | |
956ee21a GH |
1720 | ret = ccp_copy_from_sb(cmd_q, &ctx, op.jobid, op.sb_ctx, |
1721 | CCP_PASSTHRU_BYTESWAP_256BIT); | |
63b94509 TL |
1722 | if (ret) { |
1723 | cmd->engine_error = cmd_q->cmd_error; | |
1724 | goto e_data; | |
1725 | } | |
1726 | ||
4b394a23 GH |
1727 | if (sha->final) { |
1728 | /* Finishing up, so get the digest */ | |
c11baa02 TL |
1729 | switch (sha->type) { |
1730 | case CCP_SHA_TYPE_1: | |
c11baa02 | 1731 | case CCP_SHA_TYPE_224: |
c11baa02 | 1732 | case CCP_SHA_TYPE_256: |
4b394a23 GH |
1733 | ccp_get_dm_area(&ctx, ooffset, |
1734 | sha->ctx, 0, | |
1735 | digest_size); | |
c11baa02 | 1736 | break; |
ccebcf3f GH |
1737 | case CCP_SHA_TYPE_384: |
1738 | case CCP_SHA_TYPE_512: | |
1739 | ccp_get_dm_area(&ctx, 0, | |
1740 | sha->ctx, LSB_ITEM_SIZE - ooffset, | |
1741 | LSB_ITEM_SIZE); | |
1742 | ccp_get_dm_area(&ctx, LSB_ITEM_SIZE + ooffset, | |
1743 | sha->ctx, 0, | |
1744 | LSB_ITEM_SIZE - ooffset); | |
1745 | break; | |
c11baa02 TL |
1746 | default: |
1747 | ret = -EINVAL; | |
e356c49c | 1748 | goto e_data; |
c11baa02 | 1749 | } |
4b394a23 GH |
1750 | } else { |
1751 | /* Stash the context */ | |
1752 | ccp_get_dm_area(&ctx, 0, sha->ctx, 0, | |
1753 | sb_count * CCP_SB_BYTES); | |
1754 | } | |
1755 | ||
1756 | if (sha->final && sha->opad) { | |
1757 | /* HMAC operation, recursively perform final SHA */ | |
1758 | struct ccp_cmd hmac_cmd; | |
1759 | struct scatterlist sg; | |
1760 | u8 *hmac_buf; | |
c11baa02 TL |
1761 | |
1762 | if (sha->opad_len != block_size) { | |
1763 | ret = -EINVAL; | |
1764 | goto e_data; | |
1765 | } | |
1766 | ||
1767 | hmac_buf = kmalloc(block_size + digest_size, GFP_KERNEL); | |
1768 | if (!hmac_buf) { | |
1769 | ret = -ENOMEM; | |
1770 | goto e_data; | |
1771 | } | |
1772 | sg_init_one(&sg, hmac_buf, block_size + digest_size); | |
1773 | ||
1774 | scatterwalk_map_and_copy(hmac_buf, sha->opad, 0, block_size, 0); | |
4b394a23 GH |
1775 | switch (sha->type) { |
1776 | case CCP_SHA_TYPE_1: | |
1777 | case CCP_SHA_TYPE_224: | |
1778 | case CCP_SHA_TYPE_256: | |
1779 | memcpy(hmac_buf + block_size, | |
1780 | ctx.address + ooffset, | |
1781 | digest_size); | |
1782 | break; | |
ccebcf3f GH |
1783 | case CCP_SHA_TYPE_384: |
1784 | case CCP_SHA_TYPE_512: | |
1785 | memcpy(hmac_buf + block_size, | |
1786 | ctx.address + LSB_ITEM_SIZE + ooffset, | |
1787 | LSB_ITEM_SIZE); | |
1788 | memcpy(hmac_buf + block_size + | |
1789 | (LSB_ITEM_SIZE - ooffset), | |
1790 | ctx.address, | |
1791 | LSB_ITEM_SIZE); | |
1792 | break; | |
4b394a23 | 1793 | default: |
128c6642 | 1794 | kfree(hmac_buf); |
4b394a23 | 1795 | ret = -EINVAL; |
128c6642 | 1796 | goto e_data; |
4b394a23 | 1797 | } |
c11baa02 TL |
1798 | |
1799 | memset(&hmac_cmd, 0, sizeof(hmac_cmd)); | |
1800 | hmac_cmd.engine = CCP_ENGINE_SHA; | |
1801 | hmac_cmd.u.sha.type = sha->type; | |
1802 | hmac_cmd.u.sha.ctx = sha->ctx; | |
1803 | hmac_cmd.u.sha.ctx_len = sha->ctx_len; | |
1804 | hmac_cmd.u.sha.src = &sg; | |
1805 | hmac_cmd.u.sha.src_len = block_size + digest_size; | |
1806 | hmac_cmd.u.sha.opad = NULL; | |
1807 | hmac_cmd.u.sha.opad_len = 0; | |
1808 | hmac_cmd.u.sha.first = 1; | |
1809 | hmac_cmd.u.sha.final = 1; | |
1810 | hmac_cmd.u.sha.msg_bits = (block_size + digest_size) << 3; | |
1811 | ||
1812 | ret = ccp_run_sha_cmd(cmd_q, &hmac_cmd); | |
1813 | if (ret) | |
1814 | cmd->engine_error = hmac_cmd.engine_error; | |
1815 | ||
1816 | kfree(hmac_buf); | |
1817 | } | |
1818 | ||
63b94509 | 1819 | e_data: |
4b394a23 GH |
1820 | if (sha->src) |
1821 | ccp_free_data(&src, cmd_q); | |
63b94509 TL |
1822 | |
1823 | e_ctx: | |
1824 | ccp_dm_free(&ctx); | |
1825 | ||
1826 | return ret; | |
1827 | } | |
1828 | ||
72c8117a AB |
1829 | static noinline_for_stack int |
1830 | ccp_run_rsa_cmd(struct ccp_cmd_queue *cmd_q, struct ccp_cmd *cmd) | |
63b94509 TL |
1831 | { |
1832 | struct ccp_rsa_engine *rsa = &cmd->u.rsa; | |
6ba46c7d | 1833 | struct ccp_dm_workarea exp, src, dst; |
63b94509 | 1834 | struct ccp_op op; |
956ee21a | 1835 | unsigned int sb_count, i_len, o_len; |
63b94509 TL |
1836 | int ret; |
1837 | ||
e28c190d GH |
1838 | /* Check against the maximum allowable size, in bits */ |
1839 | if (rsa->key_size > cmd_q->ccp->vdata->rsamax) | |
63b94509 TL |
1840 | return -EINVAL; |
1841 | ||
1842 | if (!rsa->exp || !rsa->mod || !rsa->src || !rsa->dst) | |
1843 | return -EINVAL; | |
1844 | ||
6ba46c7d GH |
1845 | memset(&op, 0, sizeof(op)); |
1846 | op.cmd_q = cmd_q; | |
1847 | op.jobid = CCP_NEW_JOBID(cmd_q->ccp); | |
1848 | ||
63b94509 TL |
1849 | /* The RSA modulus must precede the message being acted upon, so |
1850 | * it must be copied to a DMA area where the message and the | |
1851 | * modulus can be concatenated. Therefore the input buffer | |
1852 | * length required is twice the output buffer length (which | |
6ba46c7d GH |
1853 | * must be a multiple of 256-bits). Compute o_len, i_len in bytes. |
1854 | * Buffer sizes must be a multiple of 32 bytes; rounding up may be | |
1855 | * required. | |
63b94509 | 1856 | */ |
6ba46c7d | 1857 | o_len = 32 * ((rsa->key_size + 255) / 256); |
63b94509 TL |
1858 | i_len = o_len * 2; |
1859 | ||
d634baea | 1860 | sb_count = 0; |
6ba46c7d GH |
1861 | if (cmd_q->ccp->vdata->version < CCP_VERSION(5, 0)) { |
1862 | /* sb_count is the number of storage block slots required | |
1863 | * for the modulus. | |
1864 | */ | |
1865 | sb_count = o_len / CCP_SB_BYTES; | |
1866 | op.sb_key = cmd_q->ccp->vdata->perform->sballoc(cmd_q, | |
1867 | sb_count); | |
1868 | if (!op.sb_key) | |
1869 | return -EIO; | |
1870 | } else { | |
1871 | /* A version 5 device allows a modulus size that will not fit | |
1872 | * in the LSB, so the command will transfer it from memory. | |
1873 | * Set the sb key to the default, even though it's not used. | |
1874 | */ | |
1875 | op.sb_key = cmd_q->sb_key; | |
1876 | } | |
63b94509 | 1877 | |
6ba46c7d GH |
1878 | /* The RSA exponent must be in little endian format. Reverse its |
1879 | * byte order. | |
63b94509 TL |
1880 | */ |
1881 | ret = ccp_init_dm_workarea(&exp, cmd_q, o_len, DMA_TO_DEVICE); | |
1882 | if (ret) | |
956ee21a | 1883 | goto e_sb; |
63b94509 | 1884 | |
83d650ab | 1885 | ret = ccp_reverse_set_dm_area(&exp, 0, rsa->exp, 0, rsa->exp_len); |
355eba5d TL |
1886 | if (ret) |
1887 | goto e_exp; | |
6ba46c7d GH |
1888 | |
1889 | if (cmd_q->ccp->vdata->version < CCP_VERSION(5, 0)) { | |
1890 | /* Copy the exponent to the local storage block, using | |
1891 | * as many 32-byte blocks as were allocated above. It's | |
1892 | * already little endian, so no further change is required. | |
1893 | */ | |
1894 | ret = ccp_copy_to_sb(cmd_q, &exp, op.jobid, op.sb_key, | |
1895 | CCP_PASSTHRU_BYTESWAP_NOOP); | |
1896 | if (ret) { | |
1897 | cmd->engine_error = cmd_q->cmd_error; | |
1898 | goto e_exp; | |
1899 | } | |
1900 | } else { | |
1901 | /* The exponent can be retrieved from memory via DMA. */ | |
1902 | op.exp.u.dma.address = exp.dma.address; | |
1903 | op.exp.u.dma.offset = 0; | |
63b94509 TL |
1904 | } |
1905 | ||
1906 | /* Concatenate the modulus and the message. Both the modulus and | |
1907 | * the operands must be in little endian format. Since the input | |
1908 | * is in big endian format it must be converted. | |
1909 | */ | |
1910 | ret = ccp_init_dm_workarea(&src, cmd_q, i_len, DMA_TO_DEVICE); | |
1911 | if (ret) | |
1912 | goto e_exp; | |
1913 | ||
83d650ab | 1914 | ret = ccp_reverse_set_dm_area(&src, 0, rsa->mod, 0, rsa->mod_len); |
355eba5d TL |
1915 | if (ret) |
1916 | goto e_src; | |
83d650ab | 1917 | ret = ccp_reverse_set_dm_area(&src, o_len, rsa->src, 0, rsa->src_len); |
355eba5d TL |
1918 | if (ret) |
1919 | goto e_src; | |
63b94509 TL |
1920 | |
1921 | /* Prepare the output area for the operation */ | |
6ba46c7d | 1922 | ret = ccp_init_dm_workarea(&dst, cmd_q, o_len, DMA_FROM_DEVICE); |
63b94509 TL |
1923 | if (ret) |
1924 | goto e_src; | |
1925 | ||
1926 | op.soc = 1; | |
1927 | op.src.u.dma.address = src.dma.address; | |
1928 | op.src.u.dma.offset = 0; | |
1929 | op.src.u.dma.length = i_len; | |
6ba46c7d | 1930 | op.dst.u.dma.address = dst.dma.address; |
63b94509 TL |
1931 | op.dst.u.dma.offset = 0; |
1932 | op.dst.u.dma.length = o_len; | |
1933 | ||
1934 | op.u.rsa.mod_size = rsa->key_size; | |
1935 | op.u.rsa.input_len = i_len; | |
1936 | ||
a43eb985 | 1937 | ret = cmd_q->ccp->vdata->perform->rsa(&op); |
63b94509 TL |
1938 | if (ret) { |
1939 | cmd->engine_error = cmd_q->cmd_error; | |
1940 | goto e_dst; | |
1941 | } | |
1942 | ||
6ba46c7d | 1943 | ccp_reverse_get_dm_area(&dst, 0, rsa->dst, 0, rsa->mod_len); |
63b94509 TL |
1944 | |
1945 | e_dst: | |
6ba46c7d | 1946 | ccp_dm_free(&dst); |
63b94509 TL |
1947 | |
1948 | e_src: | |
1949 | ccp_dm_free(&src); | |
1950 | ||
1951 | e_exp: | |
1952 | ccp_dm_free(&exp); | |
1953 | ||
956ee21a | 1954 | e_sb: |
d634baea | 1955 | if (sb_count) |
6ba46c7d | 1956 | cmd_q->ccp->vdata->perform->sbfree(cmd_q, op.sb_key, sb_count); |
63b94509 TL |
1957 | |
1958 | return ret; | |
1959 | } | |
1960 | ||
72c8117a AB |
1961 | static noinline_for_stack int |
1962 | ccp_run_passthru_cmd(struct ccp_cmd_queue *cmd_q, struct ccp_cmd *cmd) | |
63b94509 TL |
1963 | { |
1964 | struct ccp_passthru_engine *pt = &cmd->u.passthru; | |
1965 | struct ccp_dm_workarea mask; | |
1966 | struct ccp_data src, dst; | |
1967 | struct ccp_op op; | |
1968 | bool in_place = false; | |
1969 | unsigned int i; | |
4b394a23 | 1970 | int ret = 0; |
63b94509 TL |
1971 | |
1972 | if (!pt->final && (pt->src_len & (CCP_PASSTHRU_BLOCKSIZE - 1))) | |
1973 | return -EINVAL; | |
1974 | ||
1975 | if (!pt->src || !pt->dst) | |
1976 | return -EINVAL; | |
1977 | ||
1978 | if (pt->bit_mod != CCP_PASSTHRU_BITWISE_NOOP) { | |
1979 | if (pt->mask_len != CCP_PASSTHRU_MASKSIZE) | |
1980 | return -EINVAL; | |
1981 | if (!pt->mask) | |
1982 | return -EINVAL; | |
1983 | } | |
1984 | ||
956ee21a | 1985 | BUILD_BUG_ON(CCP_PASSTHRU_SB_COUNT != 1); |
63b94509 TL |
1986 | |
1987 | memset(&op, 0, sizeof(op)); | |
1988 | op.cmd_q = cmd_q; | |
4b394a23 | 1989 | op.jobid = CCP_NEW_JOBID(cmd_q->ccp); |
63b94509 TL |
1990 | |
1991 | if (pt->bit_mod != CCP_PASSTHRU_BITWISE_NOOP) { | |
1992 | /* Load the mask */ | |
956ee21a | 1993 | op.sb_key = cmd_q->sb_key; |
63b94509 TL |
1994 | |
1995 | ret = ccp_init_dm_workarea(&mask, cmd_q, | |
956ee21a GH |
1996 | CCP_PASSTHRU_SB_COUNT * |
1997 | CCP_SB_BYTES, | |
63b94509 TL |
1998 | DMA_TO_DEVICE); |
1999 | if (ret) | |
2000 | return ret; | |
2001 | ||
b698a9f4 GH |
2002 | ret = ccp_set_dm_area(&mask, 0, pt->mask, 0, pt->mask_len); |
2003 | if (ret) | |
2004 | goto e_mask; | |
956ee21a GH |
2005 | ret = ccp_copy_to_sb(cmd_q, &mask, op.jobid, op.sb_key, |
2006 | CCP_PASSTHRU_BYTESWAP_NOOP); | |
63b94509 TL |
2007 | if (ret) { |
2008 | cmd->engine_error = cmd_q->cmd_error; | |
2009 | goto e_mask; | |
2010 | } | |
2011 | } | |
2012 | ||
2013 | /* Prepare the input and output data workareas. For in-place | |
2014 | * operations we need to set the dma direction to BIDIRECTIONAL | |
2015 | * and copy the src workarea to the dst workarea. | |
2016 | */ | |
2017 | if (sg_virt(pt->src) == sg_virt(pt->dst)) | |
2018 | in_place = true; | |
2019 | ||
2020 | ret = ccp_init_data(&src, cmd_q, pt->src, pt->src_len, | |
2021 | CCP_PASSTHRU_MASKSIZE, | |
2022 | in_place ? DMA_BIDIRECTIONAL : DMA_TO_DEVICE); | |
2023 | if (ret) | |
2024 | goto e_mask; | |
2025 | ||
8db88467 | 2026 | if (in_place) { |
63b94509 | 2027 | dst = src; |
8db88467 | 2028 | } else { |
63b94509 TL |
2029 | ret = ccp_init_data(&dst, cmd_q, pt->dst, pt->src_len, |
2030 | CCP_PASSTHRU_MASKSIZE, DMA_FROM_DEVICE); | |
2031 | if (ret) | |
2032 | goto e_src; | |
2033 | } | |
2034 | ||
2035 | /* Send data to the CCP Passthru engine | |
2036 | * Because the CCP engine works on a single source and destination | |
2037 | * dma address at a time, each entry in the source scatterlist | |
2038 | * (after the dma_map_sg call) must be less than or equal to the | |
2039 | * (remaining) length in the destination scatterlist entry and the | |
2040 | * length must be a multiple of CCP_PASSTHRU_BLOCKSIZE | |
2041 | */ | |
2042 | dst.sg_wa.sg_used = 0; | |
2043 | for (i = 1; i <= src.sg_wa.dma_count; i++) { | |
2044 | if (!dst.sg_wa.sg || | |
8a302808 | 2045 | (sg_dma_len(dst.sg_wa.sg) < sg_dma_len(src.sg_wa.sg))) { |
63b94509 TL |
2046 | ret = -EINVAL; |
2047 | goto e_dst; | |
2048 | } | |
2049 | ||
2050 | if (i == src.sg_wa.dma_count) { | |
2051 | op.eom = 1; | |
2052 | op.soc = 1; | |
2053 | } | |
2054 | ||
2055 | op.src.type = CCP_MEMTYPE_SYSTEM; | |
2056 | op.src.u.dma.address = sg_dma_address(src.sg_wa.sg); | |
2057 | op.src.u.dma.offset = 0; | |
2058 | op.src.u.dma.length = sg_dma_len(src.sg_wa.sg); | |
2059 | ||
2060 | op.dst.type = CCP_MEMTYPE_SYSTEM; | |
2061 | op.dst.u.dma.address = sg_dma_address(dst.sg_wa.sg); | |
80e84c16 DJ |
2062 | op.dst.u.dma.offset = dst.sg_wa.sg_used; |
2063 | op.dst.u.dma.length = op.src.u.dma.length; | |
63b94509 | 2064 | |
a43eb985 | 2065 | ret = cmd_q->ccp->vdata->perform->passthru(&op); |
63b94509 TL |
2066 | if (ret) { |
2067 | cmd->engine_error = cmd_q->cmd_error; | |
2068 | goto e_dst; | |
2069 | } | |
2070 | ||
8a302808 JA |
2071 | dst.sg_wa.sg_used += sg_dma_len(src.sg_wa.sg); |
2072 | if (dst.sg_wa.sg_used == sg_dma_len(dst.sg_wa.sg)) { | |
63b94509 TL |
2073 | dst.sg_wa.sg = sg_next(dst.sg_wa.sg); |
2074 | dst.sg_wa.sg_used = 0; | |
2075 | } | |
2076 | src.sg_wa.sg = sg_next(src.sg_wa.sg); | |
2077 | } | |
2078 | ||
2079 | e_dst: | |
2080 | if (!in_place) | |
2081 | ccp_free_data(&dst, cmd_q); | |
2082 | ||
2083 | e_src: | |
2084 | ccp_free_data(&src, cmd_q); | |
2085 | ||
2086 | e_mask: | |
2087 | if (pt->bit_mod != CCP_PASSTHRU_BITWISE_NOOP) | |
2088 | ccp_dm_free(&mask); | |
2089 | ||
2090 | return ret; | |
2091 | } | |
2092 | ||
72c8117a AB |
2093 | static noinline_for_stack int |
2094 | ccp_run_passthru_nomap_cmd(struct ccp_cmd_queue *cmd_q, | |
58ea8abf GH |
2095 | struct ccp_cmd *cmd) |
2096 | { | |
2097 | struct ccp_passthru_nomap_engine *pt = &cmd->u.passthru_nomap; | |
2098 | struct ccp_dm_workarea mask; | |
2099 | struct ccp_op op; | |
2100 | int ret; | |
2101 | ||
2102 | if (!pt->final && (pt->src_len & (CCP_PASSTHRU_BLOCKSIZE - 1))) | |
2103 | return -EINVAL; | |
2104 | ||
2105 | if (!pt->src_dma || !pt->dst_dma) | |
2106 | return -EINVAL; | |
2107 | ||
2108 | if (pt->bit_mod != CCP_PASSTHRU_BITWISE_NOOP) { | |
2109 | if (pt->mask_len != CCP_PASSTHRU_MASKSIZE) | |
2110 | return -EINVAL; | |
2111 | if (!pt->mask) | |
2112 | return -EINVAL; | |
2113 | } | |
2114 | ||
956ee21a | 2115 | BUILD_BUG_ON(CCP_PASSTHRU_SB_COUNT != 1); |
58ea8abf GH |
2116 | |
2117 | memset(&op, 0, sizeof(op)); | |
2118 | op.cmd_q = cmd_q; | |
bce386af | 2119 | op.jobid = CCP_NEW_JOBID(cmd_q->ccp); |
58ea8abf GH |
2120 | |
2121 | if (pt->bit_mod != CCP_PASSTHRU_BITWISE_NOOP) { | |
2122 | /* Load the mask */ | |
956ee21a | 2123 | op.sb_key = cmd_q->sb_key; |
58ea8abf GH |
2124 | |
2125 | mask.length = pt->mask_len; | |
2126 | mask.dma.address = pt->mask; | |
2127 | mask.dma.length = pt->mask_len; | |
2128 | ||
956ee21a | 2129 | ret = ccp_copy_to_sb(cmd_q, &mask, op.jobid, op.sb_key, |
58ea8abf GH |
2130 | CCP_PASSTHRU_BYTESWAP_NOOP); |
2131 | if (ret) { | |
2132 | cmd->engine_error = cmd_q->cmd_error; | |
2133 | return ret; | |
2134 | } | |
2135 | } | |
2136 | ||
2137 | /* Send data to the CCP Passthru engine */ | |
2138 | op.eom = 1; | |
2139 | op.soc = 1; | |
2140 | ||
2141 | op.src.type = CCP_MEMTYPE_SYSTEM; | |
2142 | op.src.u.dma.address = pt->src_dma; | |
2143 | op.src.u.dma.offset = 0; | |
2144 | op.src.u.dma.length = pt->src_len; | |
2145 | ||
2146 | op.dst.type = CCP_MEMTYPE_SYSTEM; | |
2147 | op.dst.u.dma.address = pt->dst_dma; | |
2148 | op.dst.u.dma.offset = 0; | |
2149 | op.dst.u.dma.length = pt->src_len; | |
2150 | ||
a43eb985 | 2151 | ret = cmd_q->ccp->vdata->perform->passthru(&op); |
58ea8abf GH |
2152 | if (ret) |
2153 | cmd->engine_error = cmd_q->cmd_error; | |
2154 | ||
2155 | return ret; | |
2156 | } | |
2157 | ||
63b94509 TL |
2158 | static int ccp_run_ecc_mm_cmd(struct ccp_cmd_queue *cmd_q, struct ccp_cmd *cmd) |
2159 | { | |
2160 | struct ccp_ecc_engine *ecc = &cmd->u.ecc; | |
2161 | struct ccp_dm_workarea src, dst; | |
2162 | struct ccp_op op; | |
2163 | int ret; | |
2164 | u8 *save; | |
2165 | ||
2166 | if (!ecc->u.mm.operand_1 || | |
2167 | (ecc->u.mm.operand_1_len > CCP_ECC_MODULUS_BYTES)) | |
2168 | return -EINVAL; | |
2169 | ||
2170 | if (ecc->function != CCP_ECC_FUNCTION_MINV_384BIT) | |
2171 | if (!ecc->u.mm.operand_2 || | |
2172 | (ecc->u.mm.operand_2_len > CCP_ECC_MODULUS_BYTES)) | |
2173 | return -EINVAL; | |
2174 | ||
2175 | if (!ecc->u.mm.result || | |
2176 | (ecc->u.mm.result_len < CCP_ECC_MODULUS_BYTES)) | |
2177 | return -EINVAL; | |
2178 | ||
2179 | memset(&op, 0, sizeof(op)); | |
2180 | op.cmd_q = cmd_q; | |
4b394a23 | 2181 | op.jobid = CCP_NEW_JOBID(cmd_q->ccp); |
63b94509 TL |
2182 | |
2183 | /* Concatenate the modulus and the operands. Both the modulus and | |
2184 | * the operands must be in little endian format. Since the input | |
2185 | * is in big endian format it must be converted and placed in a | |
2186 | * fixed length buffer. | |
2187 | */ | |
2188 | ret = ccp_init_dm_workarea(&src, cmd_q, CCP_ECC_SRC_BUF_SIZE, | |
2189 | DMA_TO_DEVICE); | |
2190 | if (ret) | |
2191 | return ret; | |
2192 | ||
2193 | /* Save the workarea address since it is updated in order to perform | |
2194 | * the concatenation | |
2195 | */ | |
2196 | save = src.address; | |
2197 | ||
2198 | /* Copy the ECC modulus */ | |
83d650ab | 2199 | ret = ccp_reverse_set_dm_area(&src, 0, ecc->mod, 0, ecc->mod_len); |
355eba5d TL |
2200 | if (ret) |
2201 | goto e_src; | |
63b94509 TL |
2202 | src.address += CCP_ECC_OPERAND_SIZE; |
2203 | ||
2204 | /* Copy the first operand */ | |
83d650ab GH |
2205 | ret = ccp_reverse_set_dm_area(&src, 0, ecc->u.mm.operand_1, 0, |
2206 | ecc->u.mm.operand_1_len); | |
355eba5d TL |
2207 | if (ret) |
2208 | goto e_src; | |
63b94509 TL |
2209 | src.address += CCP_ECC_OPERAND_SIZE; |
2210 | ||
2211 | if (ecc->function != CCP_ECC_FUNCTION_MINV_384BIT) { | |
2212 | /* Copy the second operand */ | |
83d650ab GH |
2213 | ret = ccp_reverse_set_dm_area(&src, 0, ecc->u.mm.operand_2, 0, |
2214 | ecc->u.mm.operand_2_len); | |
355eba5d TL |
2215 | if (ret) |
2216 | goto e_src; | |
63b94509 TL |
2217 | src.address += CCP_ECC_OPERAND_SIZE; |
2218 | } | |
2219 | ||
2220 | /* Restore the workarea address */ | |
2221 | src.address = save; | |
2222 | ||
2223 | /* Prepare the output area for the operation */ | |
2224 | ret = ccp_init_dm_workarea(&dst, cmd_q, CCP_ECC_DST_BUF_SIZE, | |
2225 | DMA_FROM_DEVICE); | |
2226 | if (ret) | |
2227 | goto e_src; | |
2228 | ||
2229 | op.soc = 1; | |
2230 | op.src.u.dma.address = src.dma.address; | |
2231 | op.src.u.dma.offset = 0; | |
2232 | op.src.u.dma.length = src.length; | |
2233 | op.dst.u.dma.address = dst.dma.address; | |
2234 | op.dst.u.dma.offset = 0; | |
2235 | op.dst.u.dma.length = dst.length; | |
2236 | ||
2237 | op.u.ecc.function = cmd->u.ecc.function; | |
2238 | ||
a43eb985 | 2239 | ret = cmd_q->ccp->vdata->perform->ecc(&op); |
63b94509 TL |
2240 | if (ret) { |
2241 | cmd->engine_error = cmd_q->cmd_error; | |
2242 | goto e_dst; | |
2243 | } | |
2244 | ||
2245 | ecc->ecc_result = le16_to_cpup( | |
2246 | (const __le16 *)(dst.address + CCP_ECC_RESULT_OFFSET)); | |
2247 | if (!(ecc->ecc_result & CCP_ECC_RESULT_SUCCESS)) { | |
2248 | ret = -EIO; | |
2249 | goto e_dst; | |
2250 | } | |
2251 | ||
2252 | /* Save the ECC result */ | |
83d650ab GH |
2253 | ccp_reverse_get_dm_area(&dst, 0, ecc->u.mm.result, 0, |
2254 | CCP_ECC_MODULUS_BYTES); | |
63b94509 TL |
2255 | |
2256 | e_dst: | |
2257 | ccp_dm_free(&dst); | |
2258 | ||
2259 | e_src: | |
2260 | ccp_dm_free(&src); | |
2261 | ||
2262 | return ret; | |
2263 | } | |
2264 | ||
2265 | static int ccp_run_ecc_pm_cmd(struct ccp_cmd_queue *cmd_q, struct ccp_cmd *cmd) | |
2266 | { | |
2267 | struct ccp_ecc_engine *ecc = &cmd->u.ecc; | |
2268 | struct ccp_dm_workarea src, dst; | |
2269 | struct ccp_op op; | |
2270 | int ret; | |
2271 | u8 *save; | |
2272 | ||
2273 | if (!ecc->u.pm.point_1.x || | |
2274 | (ecc->u.pm.point_1.x_len > CCP_ECC_MODULUS_BYTES) || | |
2275 | !ecc->u.pm.point_1.y || | |
2276 | (ecc->u.pm.point_1.y_len > CCP_ECC_MODULUS_BYTES)) | |
2277 | return -EINVAL; | |
2278 | ||
2279 | if (ecc->function == CCP_ECC_FUNCTION_PADD_384BIT) { | |
2280 | if (!ecc->u.pm.point_2.x || | |
2281 | (ecc->u.pm.point_2.x_len > CCP_ECC_MODULUS_BYTES) || | |
2282 | !ecc->u.pm.point_2.y || | |
2283 | (ecc->u.pm.point_2.y_len > CCP_ECC_MODULUS_BYTES)) | |
2284 | return -EINVAL; | |
2285 | } else { | |
2286 | if (!ecc->u.pm.domain_a || | |
2287 | (ecc->u.pm.domain_a_len > CCP_ECC_MODULUS_BYTES)) | |
2288 | return -EINVAL; | |
2289 | ||
2290 | if (ecc->function == CCP_ECC_FUNCTION_PMUL_384BIT) | |
2291 | if (!ecc->u.pm.scalar || | |
2292 | (ecc->u.pm.scalar_len > CCP_ECC_MODULUS_BYTES)) | |
2293 | return -EINVAL; | |
2294 | } | |
2295 | ||
2296 | if (!ecc->u.pm.result.x || | |
2297 | (ecc->u.pm.result.x_len < CCP_ECC_MODULUS_BYTES) || | |
2298 | !ecc->u.pm.result.y || | |
2299 | (ecc->u.pm.result.y_len < CCP_ECC_MODULUS_BYTES)) | |
2300 | return -EINVAL; | |
2301 | ||
2302 | memset(&op, 0, sizeof(op)); | |
2303 | op.cmd_q = cmd_q; | |
4b394a23 | 2304 | op.jobid = CCP_NEW_JOBID(cmd_q->ccp); |
63b94509 TL |
2305 | |
2306 | /* Concatenate the modulus and the operands. Both the modulus and | |
2307 | * the operands must be in little endian format. Since the input | |
2308 | * is in big endian format it must be converted and placed in a | |
2309 | * fixed length buffer. | |
2310 | */ | |
2311 | ret = ccp_init_dm_workarea(&src, cmd_q, CCP_ECC_SRC_BUF_SIZE, | |
2312 | DMA_TO_DEVICE); | |
2313 | if (ret) | |
2314 | return ret; | |
2315 | ||
2316 | /* Save the workarea address since it is updated in order to perform | |
2317 | * the concatenation | |
2318 | */ | |
2319 | save = src.address; | |
2320 | ||
2321 | /* Copy the ECC modulus */ | |
83d650ab | 2322 | ret = ccp_reverse_set_dm_area(&src, 0, ecc->mod, 0, ecc->mod_len); |
355eba5d TL |
2323 | if (ret) |
2324 | goto e_src; | |
63b94509 TL |
2325 | src.address += CCP_ECC_OPERAND_SIZE; |
2326 | ||
2327 | /* Copy the first point X and Y coordinate */ | |
83d650ab GH |
2328 | ret = ccp_reverse_set_dm_area(&src, 0, ecc->u.pm.point_1.x, 0, |
2329 | ecc->u.pm.point_1.x_len); | |
355eba5d TL |
2330 | if (ret) |
2331 | goto e_src; | |
63b94509 | 2332 | src.address += CCP_ECC_OPERAND_SIZE; |
83d650ab GH |
2333 | ret = ccp_reverse_set_dm_area(&src, 0, ecc->u.pm.point_1.y, 0, |
2334 | ecc->u.pm.point_1.y_len); | |
355eba5d TL |
2335 | if (ret) |
2336 | goto e_src; | |
63b94509 TL |
2337 | src.address += CCP_ECC_OPERAND_SIZE; |
2338 | ||
4b394a23 | 2339 | /* Set the first point Z coordinate to 1 */ |
8db88467 | 2340 | *src.address = 0x01; |
63b94509 TL |
2341 | src.address += CCP_ECC_OPERAND_SIZE; |
2342 | ||
2343 | if (ecc->function == CCP_ECC_FUNCTION_PADD_384BIT) { | |
2344 | /* Copy the second point X and Y coordinate */ | |
83d650ab GH |
2345 | ret = ccp_reverse_set_dm_area(&src, 0, ecc->u.pm.point_2.x, 0, |
2346 | ecc->u.pm.point_2.x_len); | |
355eba5d TL |
2347 | if (ret) |
2348 | goto e_src; | |
63b94509 | 2349 | src.address += CCP_ECC_OPERAND_SIZE; |
83d650ab GH |
2350 | ret = ccp_reverse_set_dm_area(&src, 0, ecc->u.pm.point_2.y, 0, |
2351 | ecc->u.pm.point_2.y_len); | |
355eba5d TL |
2352 | if (ret) |
2353 | goto e_src; | |
63b94509 TL |
2354 | src.address += CCP_ECC_OPERAND_SIZE; |
2355 | ||
4b394a23 | 2356 | /* Set the second point Z coordinate to 1 */ |
8db88467 | 2357 | *src.address = 0x01; |
63b94509 TL |
2358 | src.address += CCP_ECC_OPERAND_SIZE; |
2359 | } else { | |
2360 | /* Copy the Domain "a" parameter */ | |
83d650ab GH |
2361 | ret = ccp_reverse_set_dm_area(&src, 0, ecc->u.pm.domain_a, 0, |
2362 | ecc->u.pm.domain_a_len); | |
355eba5d TL |
2363 | if (ret) |
2364 | goto e_src; | |
63b94509 TL |
2365 | src.address += CCP_ECC_OPERAND_SIZE; |
2366 | ||
2367 | if (ecc->function == CCP_ECC_FUNCTION_PMUL_384BIT) { | |
2368 | /* Copy the scalar value */ | |
83d650ab GH |
2369 | ret = ccp_reverse_set_dm_area(&src, 0, |
2370 | ecc->u.pm.scalar, 0, | |
2371 | ecc->u.pm.scalar_len); | |
355eba5d TL |
2372 | if (ret) |
2373 | goto e_src; | |
63b94509 TL |
2374 | src.address += CCP_ECC_OPERAND_SIZE; |
2375 | } | |
2376 | } | |
2377 | ||
2378 | /* Restore the workarea address */ | |
2379 | src.address = save; | |
2380 | ||
2381 | /* Prepare the output area for the operation */ | |
2382 | ret = ccp_init_dm_workarea(&dst, cmd_q, CCP_ECC_DST_BUF_SIZE, | |
2383 | DMA_FROM_DEVICE); | |
2384 | if (ret) | |
2385 | goto e_src; | |
2386 | ||
2387 | op.soc = 1; | |
2388 | op.src.u.dma.address = src.dma.address; | |
2389 | op.src.u.dma.offset = 0; | |
2390 | op.src.u.dma.length = src.length; | |
2391 | op.dst.u.dma.address = dst.dma.address; | |
2392 | op.dst.u.dma.offset = 0; | |
2393 | op.dst.u.dma.length = dst.length; | |
2394 | ||
2395 | op.u.ecc.function = cmd->u.ecc.function; | |
2396 | ||
a43eb985 | 2397 | ret = cmd_q->ccp->vdata->perform->ecc(&op); |
63b94509 TL |
2398 | if (ret) { |
2399 | cmd->engine_error = cmd_q->cmd_error; | |
2400 | goto e_dst; | |
2401 | } | |
2402 | ||
2403 | ecc->ecc_result = le16_to_cpup( | |
2404 | (const __le16 *)(dst.address + CCP_ECC_RESULT_OFFSET)); | |
2405 | if (!(ecc->ecc_result & CCP_ECC_RESULT_SUCCESS)) { | |
2406 | ret = -EIO; | |
2407 | goto e_dst; | |
2408 | } | |
2409 | ||
2410 | /* Save the workarea address since it is updated as we walk through | |
2411 | * to copy the point math result | |
2412 | */ | |
2413 | save = dst.address; | |
2414 | ||
2415 | /* Save the ECC result X and Y coordinates */ | |
83d650ab | 2416 | ccp_reverse_get_dm_area(&dst, 0, ecc->u.pm.result.x, 0, |
63b94509 TL |
2417 | CCP_ECC_MODULUS_BYTES); |
2418 | dst.address += CCP_ECC_OUTPUT_SIZE; | |
83d650ab | 2419 | ccp_reverse_get_dm_area(&dst, 0, ecc->u.pm.result.y, 0, |
63b94509 TL |
2420 | CCP_ECC_MODULUS_BYTES); |
2421 | dst.address += CCP_ECC_OUTPUT_SIZE; | |
2422 | ||
2423 | /* Restore the workarea address */ | |
2424 | dst.address = save; | |
2425 | ||
2426 | e_dst: | |
2427 | ccp_dm_free(&dst); | |
2428 | ||
2429 | e_src: | |
2430 | ccp_dm_free(&src); | |
2431 | ||
2432 | return ret; | |
2433 | } | |
2434 | ||
72c8117a AB |
2435 | static noinline_for_stack int |
2436 | ccp_run_ecc_cmd(struct ccp_cmd_queue *cmd_q, struct ccp_cmd *cmd) | |
63b94509 TL |
2437 | { |
2438 | struct ccp_ecc_engine *ecc = &cmd->u.ecc; | |
2439 | ||
2440 | ecc->ecc_result = 0; | |
2441 | ||
2442 | if (!ecc->mod || | |
2443 | (ecc->mod_len > CCP_ECC_MODULUS_BYTES)) | |
2444 | return -EINVAL; | |
2445 | ||
2446 | switch (ecc->function) { | |
2447 | case CCP_ECC_FUNCTION_MMUL_384BIT: | |
2448 | case CCP_ECC_FUNCTION_MADD_384BIT: | |
2449 | case CCP_ECC_FUNCTION_MINV_384BIT: | |
2450 | return ccp_run_ecc_mm_cmd(cmd_q, cmd); | |
2451 | ||
2452 | case CCP_ECC_FUNCTION_PADD_384BIT: | |
2453 | case CCP_ECC_FUNCTION_PMUL_384BIT: | |
2454 | case CCP_ECC_FUNCTION_PDBL_384BIT: | |
2455 | return ccp_run_ecc_pm_cmd(cmd_q, cmd); | |
2456 | ||
2457 | default: | |
2458 | return -EINVAL; | |
2459 | } | |
2460 | } | |
2461 | ||
2462 | int ccp_run_cmd(struct ccp_cmd_queue *cmd_q, struct ccp_cmd *cmd) | |
2463 | { | |
2464 | int ret; | |
2465 | ||
2466 | cmd->engine_error = 0; | |
2467 | cmd_q->cmd_error = 0; | |
2468 | cmd_q->int_rcvd = 0; | |
bb4e89b3 | 2469 | cmd_q->free_slots = cmd_q->ccp->vdata->perform->get_free_slots(cmd_q); |
63b94509 TL |
2470 | |
2471 | switch (cmd->engine) { | |
2472 | case CCP_ENGINE_AES: | |
72c8117a AB |
2473 | switch (cmd->u.aes.mode) { |
2474 | case CCP_AES_MODE_CMAC: | |
2475 | ret = ccp_run_aes_cmac_cmd(cmd_q, cmd); | |
2476 | break; | |
2477 | case CCP_AES_MODE_GCM: | |
2478 | ret = ccp_run_aes_gcm_cmd(cmd_q, cmd); | |
2479 | break; | |
2480 | default: | |
2481 | ret = ccp_run_aes_cmd(cmd_q, cmd); | |
2482 | break; | |
2483 | } | |
63b94509 TL |
2484 | break; |
2485 | case CCP_ENGINE_XTS_AES_128: | |
2486 | ret = ccp_run_xts_aes_cmd(cmd_q, cmd); | |
2487 | break; | |
990672d4 GH |
2488 | case CCP_ENGINE_DES3: |
2489 | ret = ccp_run_des3_cmd(cmd_q, cmd); | |
2490 | break; | |
63b94509 TL |
2491 | case CCP_ENGINE_SHA: |
2492 | ret = ccp_run_sha_cmd(cmd_q, cmd); | |
2493 | break; | |
2494 | case CCP_ENGINE_RSA: | |
2495 | ret = ccp_run_rsa_cmd(cmd_q, cmd); | |
2496 | break; | |
2497 | case CCP_ENGINE_PASSTHRU: | |
58ea8abf GH |
2498 | if (cmd->flags & CCP_CMD_PASSTHRU_NO_DMA_MAP) |
2499 | ret = ccp_run_passthru_nomap_cmd(cmd_q, cmd); | |
2500 | else | |
2501 | ret = ccp_run_passthru_cmd(cmd_q, cmd); | |
63b94509 TL |
2502 | break; |
2503 | case CCP_ENGINE_ECC: | |
2504 | ret = ccp_run_ecc_cmd(cmd_q, cmd); | |
2505 | break; | |
2506 | default: | |
2507 | ret = -EINVAL; | |
2508 | } | |
2509 | ||
2510 | return ret; | |
2511 | } |