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63b94509 TL |
1 | /* |
2 | * AMD Cryptographic Coprocessor (CCP) driver | |
3 | * | |
68cc652f | 4 | * Copyright (C) 2013,2017 Advanced Micro Devices, Inc. |
63b94509 TL |
5 | * |
6 | * Author: Tom Lendacky <thomas.lendacky@amd.com> | |
a43eb985 | 7 | * Author: Gary R Hook <gary.hook@amd.com> |
63b94509 TL |
8 | * |
9 | * This program is free software; you can redistribute it and/or modify | |
10 | * it under the terms of the GNU General Public License version 2 as | |
11 | * published by the Free Software Foundation. | |
12 | */ | |
13 | ||
14 | #include <linux/module.h> | |
15 | #include <linux/kernel.h> | |
16 | #include <linux/pci.h> | |
63b94509 | 17 | #include <linux/interrupt.h> |
63b94509 | 18 | #include <crypto/scatterwalk.h> |
990672d4 | 19 | #include <crypto/des.h> |
ea0375af | 20 | #include <linux/ccp.h> |
63b94509 TL |
21 | |
22 | #include "ccp-dev.h" | |
23 | ||
c11baa02 | 24 | /* SHA initial context values */ |
4b394a23 | 25 | static const __be32 ccp_sha1_init[SHA1_DIGEST_SIZE / sizeof(__be32)] = { |
c11baa02 TL |
26 | cpu_to_be32(SHA1_H0), cpu_to_be32(SHA1_H1), |
27 | cpu_to_be32(SHA1_H2), cpu_to_be32(SHA1_H3), | |
4b394a23 | 28 | cpu_to_be32(SHA1_H4), |
c11baa02 TL |
29 | }; |
30 | ||
4b394a23 | 31 | static const __be32 ccp_sha224_init[SHA256_DIGEST_SIZE / sizeof(__be32)] = { |
c11baa02 TL |
32 | cpu_to_be32(SHA224_H0), cpu_to_be32(SHA224_H1), |
33 | cpu_to_be32(SHA224_H2), cpu_to_be32(SHA224_H3), | |
34 | cpu_to_be32(SHA224_H4), cpu_to_be32(SHA224_H5), | |
35 | cpu_to_be32(SHA224_H6), cpu_to_be32(SHA224_H7), | |
36 | }; | |
37 | ||
4b394a23 | 38 | static const __be32 ccp_sha256_init[SHA256_DIGEST_SIZE / sizeof(__be32)] = { |
c11baa02 TL |
39 | cpu_to_be32(SHA256_H0), cpu_to_be32(SHA256_H1), |
40 | cpu_to_be32(SHA256_H2), cpu_to_be32(SHA256_H3), | |
41 | cpu_to_be32(SHA256_H4), cpu_to_be32(SHA256_H5), | |
42 | cpu_to_be32(SHA256_H6), cpu_to_be32(SHA256_H7), | |
43 | }; | |
44 | ||
ccebcf3f GH |
45 | static const __be64 ccp_sha384_init[SHA512_DIGEST_SIZE / sizeof(__be64)] = { |
46 | cpu_to_be64(SHA384_H0), cpu_to_be64(SHA384_H1), | |
47 | cpu_to_be64(SHA384_H2), cpu_to_be64(SHA384_H3), | |
48 | cpu_to_be64(SHA384_H4), cpu_to_be64(SHA384_H5), | |
49 | cpu_to_be64(SHA384_H6), cpu_to_be64(SHA384_H7), | |
50 | }; | |
51 | ||
52 | static const __be64 ccp_sha512_init[SHA512_DIGEST_SIZE / sizeof(__be64)] = { | |
53 | cpu_to_be64(SHA512_H0), cpu_to_be64(SHA512_H1), | |
54 | cpu_to_be64(SHA512_H2), cpu_to_be64(SHA512_H3), | |
55 | cpu_to_be64(SHA512_H4), cpu_to_be64(SHA512_H5), | |
56 | cpu_to_be64(SHA512_H6), cpu_to_be64(SHA512_H7), | |
57 | }; | |
58 | ||
4b394a23 GH |
59 | #define CCP_NEW_JOBID(ccp) ((ccp->vdata->version == CCP_VERSION(3, 0)) ? \ |
60 | ccp_gen_jobid(ccp) : 0) | |
61 | ||
63b94509 TL |
62 | static u32 ccp_gen_jobid(struct ccp_device *ccp) |
63 | { | |
64 | return atomic_inc_return(&ccp->current_id) & CCP_JOBID_MASK; | |
65 | } | |
66 | ||
67 | static void ccp_sg_free(struct ccp_sg_workarea *wa) | |
68 | { | |
69 | if (wa->dma_count) | |
70 | dma_unmap_sg(wa->dma_dev, wa->dma_sg, wa->nents, wa->dma_dir); | |
71 | ||
72 | wa->dma_count = 0; | |
73 | } | |
74 | ||
75 | static int ccp_init_sg_workarea(struct ccp_sg_workarea *wa, struct device *dev, | |
81a59f00 | 76 | struct scatterlist *sg, u64 len, |
63b94509 TL |
77 | enum dma_data_direction dma_dir) |
78 | { | |
79 | memset(wa, 0, sizeof(*wa)); | |
80 | ||
81 | wa->sg = sg; | |
82 | if (!sg) | |
83 | return 0; | |
84 | ||
fb43f694 TL |
85 | wa->nents = sg_nents_for_len(sg, len); |
86 | if (wa->nents < 0) | |
87 | return wa->nents; | |
88 | ||
63b94509 TL |
89 | wa->bytes_left = len; |
90 | wa->sg_used = 0; | |
91 | ||
92 | if (len == 0) | |
93 | return 0; | |
94 | ||
95 | if (dma_dir == DMA_NONE) | |
96 | return 0; | |
97 | ||
98 | wa->dma_sg = sg; | |
99 | wa->dma_dev = dev; | |
100 | wa->dma_dir = dma_dir; | |
101 | wa->dma_count = dma_map_sg(dev, sg, wa->nents, dma_dir); | |
102 | if (!wa->dma_count) | |
103 | return -ENOMEM; | |
104 | ||
63b94509 TL |
105 | return 0; |
106 | } | |
107 | ||
108 | static void ccp_update_sg_workarea(struct ccp_sg_workarea *wa, unsigned int len) | |
109 | { | |
81a59f00 | 110 | unsigned int nbytes = min_t(u64, len, wa->bytes_left); |
63b94509 TL |
111 | |
112 | if (!wa->sg) | |
113 | return; | |
114 | ||
115 | wa->sg_used += nbytes; | |
116 | wa->bytes_left -= nbytes; | |
117 | if (wa->sg_used == wa->sg->length) { | |
118 | wa->sg = sg_next(wa->sg); | |
119 | wa->sg_used = 0; | |
120 | } | |
121 | } | |
122 | ||
123 | static void ccp_dm_free(struct ccp_dm_workarea *wa) | |
124 | { | |
125 | if (wa->length <= CCP_DMAPOOL_MAX_SIZE) { | |
126 | if (wa->address) | |
127 | dma_pool_free(wa->dma_pool, wa->address, | |
128 | wa->dma.address); | |
129 | } else { | |
130 | if (wa->dma.address) | |
131 | dma_unmap_single(wa->dev, wa->dma.address, wa->length, | |
132 | wa->dma.dir); | |
133 | kfree(wa->address); | |
134 | } | |
135 | ||
136 | wa->address = NULL; | |
137 | wa->dma.address = 0; | |
138 | } | |
139 | ||
140 | static int ccp_init_dm_workarea(struct ccp_dm_workarea *wa, | |
141 | struct ccp_cmd_queue *cmd_q, | |
142 | unsigned int len, | |
143 | enum dma_data_direction dir) | |
144 | { | |
145 | memset(wa, 0, sizeof(*wa)); | |
146 | ||
147 | if (!len) | |
148 | return 0; | |
149 | ||
150 | wa->dev = cmd_q->ccp->dev; | |
151 | wa->length = len; | |
152 | ||
153 | if (len <= CCP_DMAPOOL_MAX_SIZE) { | |
154 | wa->dma_pool = cmd_q->dma_pool; | |
155 | ||
156 | wa->address = dma_pool_alloc(wa->dma_pool, GFP_KERNEL, | |
157 | &wa->dma.address); | |
158 | if (!wa->address) | |
159 | return -ENOMEM; | |
160 | ||
161 | wa->dma.length = CCP_DMAPOOL_MAX_SIZE; | |
162 | ||
163 | memset(wa->address, 0, CCP_DMAPOOL_MAX_SIZE); | |
164 | } else { | |
165 | wa->address = kzalloc(len, GFP_KERNEL); | |
166 | if (!wa->address) | |
167 | return -ENOMEM; | |
168 | ||
169 | wa->dma.address = dma_map_single(wa->dev, wa->address, len, | |
170 | dir); | |
ef4064bb | 171 | if (dma_mapping_error(wa->dev, wa->dma.address)) |
63b94509 TL |
172 | return -ENOMEM; |
173 | ||
174 | wa->dma.length = len; | |
175 | } | |
176 | wa->dma.dir = dir; | |
177 | ||
178 | return 0; | |
179 | } | |
180 | ||
b5ba0835 GH |
181 | static int ccp_set_dm_area(struct ccp_dm_workarea *wa, unsigned int wa_offset, |
182 | struct scatterlist *sg, unsigned int sg_offset, | |
183 | unsigned int len) | |
63b94509 TL |
184 | { |
185 | WARN_ON(!wa->address); | |
186 | ||
b5ba0835 GH |
187 | if (len > (wa->length - wa_offset)) |
188 | return -EINVAL; | |
189 | ||
63b94509 TL |
190 | scatterwalk_map_and_copy(wa->address + wa_offset, sg, sg_offset, len, |
191 | 0); | |
b5ba0835 | 192 | return 0; |
63b94509 TL |
193 | } |
194 | ||
195 | static void ccp_get_dm_area(struct ccp_dm_workarea *wa, unsigned int wa_offset, | |
196 | struct scatterlist *sg, unsigned int sg_offset, | |
197 | unsigned int len) | |
198 | { | |
199 | WARN_ON(!wa->address); | |
200 | ||
201 | scatterwalk_map_and_copy(wa->address + wa_offset, sg, sg_offset, len, | |
202 | 1); | |
203 | } | |
204 | ||
355eba5d | 205 | static int ccp_reverse_set_dm_area(struct ccp_dm_workarea *wa, |
83d650ab | 206 | unsigned int wa_offset, |
355eba5d | 207 | struct scatterlist *sg, |
83d650ab GH |
208 | unsigned int sg_offset, |
209 | unsigned int len) | |
63b94509 | 210 | { |
83d650ab | 211 | u8 *p, *q; |
b5ba0835 | 212 | int rc; |
83d650ab | 213 | |
b5ba0835 GH |
214 | rc = ccp_set_dm_area(wa, wa_offset, sg, sg_offset, len); |
215 | if (rc) | |
216 | return rc; | |
83d650ab GH |
217 | |
218 | p = wa->address + wa_offset; | |
219 | q = p + len - 1; | |
220 | while (p < q) { | |
221 | *p = *p ^ *q; | |
222 | *q = *p ^ *q; | |
223 | *p = *p ^ *q; | |
224 | p++; | |
225 | q--; | |
63b94509 | 226 | } |
355eba5d | 227 | return 0; |
63b94509 TL |
228 | } |
229 | ||
230 | static void ccp_reverse_get_dm_area(struct ccp_dm_workarea *wa, | |
83d650ab | 231 | unsigned int wa_offset, |
63b94509 | 232 | struct scatterlist *sg, |
83d650ab | 233 | unsigned int sg_offset, |
63b94509 TL |
234 | unsigned int len) |
235 | { | |
83d650ab GH |
236 | u8 *p, *q; |
237 | ||
238 | p = wa->address + wa_offset; | |
239 | q = p + len - 1; | |
240 | while (p < q) { | |
241 | *p = *p ^ *q; | |
242 | *q = *p ^ *q; | |
243 | *p = *p ^ *q; | |
244 | p++; | |
245 | q--; | |
63b94509 | 246 | } |
83d650ab GH |
247 | |
248 | ccp_get_dm_area(wa, wa_offset, sg, sg_offset, len); | |
63b94509 TL |
249 | } |
250 | ||
251 | static void ccp_free_data(struct ccp_data *data, struct ccp_cmd_queue *cmd_q) | |
252 | { | |
253 | ccp_dm_free(&data->dm_wa); | |
254 | ccp_sg_free(&data->sg_wa); | |
255 | } | |
256 | ||
257 | static int ccp_init_data(struct ccp_data *data, struct ccp_cmd_queue *cmd_q, | |
81a59f00 | 258 | struct scatterlist *sg, u64 sg_len, |
63b94509 TL |
259 | unsigned int dm_len, |
260 | enum dma_data_direction dir) | |
261 | { | |
262 | int ret; | |
263 | ||
264 | memset(data, 0, sizeof(*data)); | |
265 | ||
266 | ret = ccp_init_sg_workarea(&data->sg_wa, cmd_q->ccp->dev, sg, sg_len, | |
267 | dir); | |
268 | if (ret) | |
269 | goto e_err; | |
270 | ||
271 | ret = ccp_init_dm_workarea(&data->dm_wa, cmd_q, dm_len, dir); | |
272 | if (ret) | |
273 | goto e_err; | |
274 | ||
275 | return 0; | |
276 | ||
277 | e_err: | |
278 | ccp_free_data(data, cmd_q); | |
279 | ||
280 | return ret; | |
281 | } | |
282 | ||
283 | static unsigned int ccp_queue_buf(struct ccp_data *data, unsigned int from) | |
284 | { | |
285 | struct ccp_sg_workarea *sg_wa = &data->sg_wa; | |
286 | struct ccp_dm_workarea *dm_wa = &data->dm_wa; | |
287 | unsigned int buf_count, nbytes; | |
288 | ||
289 | /* Clear the buffer if setting it */ | |
290 | if (!from) | |
291 | memset(dm_wa->address, 0, dm_wa->length); | |
292 | ||
293 | if (!sg_wa->sg) | |
294 | return 0; | |
295 | ||
81a59f00 TL |
296 | /* Perform the copy operation |
297 | * nbytes will always be <= UINT_MAX because dm_wa->length is | |
298 | * an unsigned int | |
299 | */ | |
300 | nbytes = min_t(u64, sg_wa->bytes_left, dm_wa->length); | |
63b94509 TL |
301 | scatterwalk_map_and_copy(dm_wa->address, sg_wa->sg, sg_wa->sg_used, |
302 | nbytes, from); | |
303 | ||
304 | /* Update the structures and generate the count */ | |
305 | buf_count = 0; | |
306 | while (sg_wa->bytes_left && (buf_count < dm_wa->length)) { | |
81a59f00 TL |
307 | nbytes = min(sg_wa->sg->length - sg_wa->sg_used, |
308 | dm_wa->length - buf_count); | |
309 | nbytes = min_t(u64, sg_wa->bytes_left, nbytes); | |
63b94509 TL |
310 | |
311 | buf_count += nbytes; | |
312 | ccp_update_sg_workarea(sg_wa, nbytes); | |
313 | } | |
314 | ||
315 | return buf_count; | |
316 | } | |
317 | ||
318 | static unsigned int ccp_fill_queue_buf(struct ccp_data *data) | |
319 | { | |
320 | return ccp_queue_buf(data, 0); | |
321 | } | |
322 | ||
323 | static unsigned int ccp_empty_queue_buf(struct ccp_data *data) | |
324 | { | |
325 | return ccp_queue_buf(data, 1); | |
326 | } | |
327 | ||
328 | static void ccp_prepare_data(struct ccp_data *src, struct ccp_data *dst, | |
329 | struct ccp_op *op, unsigned int block_size, | |
330 | bool blocksize_op) | |
331 | { | |
332 | unsigned int sg_src_len, sg_dst_len, op_len; | |
333 | ||
334 | /* The CCP can only DMA from/to one address each per operation. This | |
335 | * requires that we find the smallest DMA area between the source | |
81a59f00 TL |
336 | * and destination. The resulting len values will always be <= UINT_MAX |
337 | * because the dma length is an unsigned int. | |
63b94509 | 338 | */ |
81a59f00 TL |
339 | sg_src_len = sg_dma_len(src->sg_wa.sg) - src->sg_wa.sg_used; |
340 | sg_src_len = min_t(u64, src->sg_wa.bytes_left, sg_src_len); | |
63b94509 TL |
341 | |
342 | if (dst) { | |
81a59f00 TL |
343 | sg_dst_len = sg_dma_len(dst->sg_wa.sg) - dst->sg_wa.sg_used; |
344 | sg_dst_len = min_t(u64, src->sg_wa.bytes_left, sg_dst_len); | |
63b94509 | 345 | op_len = min(sg_src_len, sg_dst_len); |
8db88467 | 346 | } else { |
63b94509 | 347 | op_len = sg_src_len; |
8db88467 | 348 | } |
63b94509 TL |
349 | |
350 | /* The data operation length will be at least block_size in length | |
351 | * or the smaller of available sg room remaining for the source or | |
352 | * the destination | |
353 | */ | |
354 | op_len = max(op_len, block_size); | |
355 | ||
356 | /* Unless we have to buffer data, there's no reason to wait */ | |
357 | op->soc = 0; | |
358 | ||
359 | if (sg_src_len < block_size) { | |
360 | /* Not enough data in the sg element, so it | |
361 | * needs to be buffered into a blocksize chunk | |
362 | */ | |
363 | int cp_len = ccp_fill_queue_buf(src); | |
364 | ||
365 | op->soc = 1; | |
366 | op->src.u.dma.address = src->dm_wa.dma.address; | |
367 | op->src.u.dma.offset = 0; | |
368 | op->src.u.dma.length = (blocksize_op) ? block_size : cp_len; | |
369 | } else { | |
370 | /* Enough data in the sg element, but we need to | |
371 | * adjust for any previously copied data | |
372 | */ | |
373 | op->src.u.dma.address = sg_dma_address(src->sg_wa.sg); | |
374 | op->src.u.dma.offset = src->sg_wa.sg_used; | |
375 | op->src.u.dma.length = op_len & ~(block_size - 1); | |
376 | ||
377 | ccp_update_sg_workarea(&src->sg_wa, op->src.u.dma.length); | |
378 | } | |
379 | ||
380 | if (dst) { | |
381 | if (sg_dst_len < block_size) { | |
382 | /* Not enough room in the sg element or we're on the | |
383 | * last piece of data (when using padding), so the | |
384 | * output needs to be buffered into a blocksize chunk | |
385 | */ | |
386 | op->soc = 1; | |
387 | op->dst.u.dma.address = dst->dm_wa.dma.address; | |
388 | op->dst.u.dma.offset = 0; | |
389 | op->dst.u.dma.length = op->src.u.dma.length; | |
390 | } else { | |
391 | /* Enough room in the sg element, but we need to | |
392 | * adjust for any previously used area | |
393 | */ | |
394 | op->dst.u.dma.address = sg_dma_address(dst->sg_wa.sg); | |
395 | op->dst.u.dma.offset = dst->sg_wa.sg_used; | |
396 | op->dst.u.dma.length = op->src.u.dma.length; | |
397 | } | |
398 | } | |
399 | } | |
400 | ||
401 | static void ccp_process_data(struct ccp_data *src, struct ccp_data *dst, | |
402 | struct ccp_op *op) | |
403 | { | |
404 | op->init = 0; | |
405 | ||
406 | if (dst) { | |
407 | if (op->dst.u.dma.address == dst->dm_wa.dma.address) | |
408 | ccp_empty_queue_buf(dst); | |
409 | else | |
410 | ccp_update_sg_workarea(&dst->sg_wa, | |
411 | op->dst.u.dma.length); | |
412 | } | |
413 | } | |
414 | ||
956ee21a GH |
415 | static int ccp_copy_to_from_sb(struct ccp_cmd_queue *cmd_q, |
416 | struct ccp_dm_workarea *wa, u32 jobid, u32 sb, | |
417 | u32 byte_swap, bool from) | |
63b94509 TL |
418 | { |
419 | struct ccp_op op; | |
420 | ||
421 | memset(&op, 0, sizeof(op)); | |
422 | ||
423 | op.cmd_q = cmd_q; | |
424 | op.jobid = jobid; | |
425 | op.eom = 1; | |
426 | ||
427 | if (from) { | |
428 | op.soc = 1; | |
956ee21a GH |
429 | op.src.type = CCP_MEMTYPE_SB; |
430 | op.src.u.sb = sb; | |
63b94509 TL |
431 | op.dst.type = CCP_MEMTYPE_SYSTEM; |
432 | op.dst.u.dma.address = wa->dma.address; | |
433 | op.dst.u.dma.length = wa->length; | |
434 | } else { | |
435 | op.src.type = CCP_MEMTYPE_SYSTEM; | |
436 | op.src.u.dma.address = wa->dma.address; | |
437 | op.src.u.dma.length = wa->length; | |
956ee21a GH |
438 | op.dst.type = CCP_MEMTYPE_SB; |
439 | op.dst.u.sb = sb; | |
63b94509 TL |
440 | } |
441 | ||
442 | op.u.passthru.byte_swap = byte_swap; | |
443 | ||
a43eb985 | 444 | return cmd_q->ccp->vdata->perform->passthru(&op); |
63b94509 TL |
445 | } |
446 | ||
956ee21a GH |
447 | static int ccp_copy_to_sb(struct ccp_cmd_queue *cmd_q, |
448 | struct ccp_dm_workarea *wa, u32 jobid, u32 sb, | |
449 | u32 byte_swap) | |
63b94509 | 450 | { |
956ee21a | 451 | return ccp_copy_to_from_sb(cmd_q, wa, jobid, sb, byte_swap, false); |
63b94509 TL |
452 | } |
453 | ||
956ee21a GH |
454 | static int ccp_copy_from_sb(struct ccp_cmd_queue *cmd_q, |
455 | struct ccp_dm_workarea *wa, u32 jobid, u32 sb, | |
456 | u32 byte_swap) | |
63b94509 | 457 | { |
956ee21a | 458 | return ccp_copy_to_from_sb(cmd_q, wa, jobid, sb, byte_swap, true); |
63b94509 TL |
459 | } |
460 | ||
461 | static int ccp_run_aes_cmac_cmd(struct ccp_cmd_queue *cmd_q, | |
462 | struct ccp_cmd *cmd) | |
463 | { | |
464 | struct ccp_aes_engine *aes = &cmd->u.aes; | |
465 | struct ccp_dm_workarea key, ctx; | |
466 | struct ccp_data src; | |
467 | struct ccp_op op; | |
468 | unsigned int dm_offset; | |
469 | int ret; | |
470 | ||
471 | if (!((aes->key_len == AES_KEYSIZE_128) || | |
472 | (aes->key_len == AES_KEYSIZE_192) || | |
473 | (aes->key_len == AES_KEYSIZE_256))) | |
474 | return -EINVAL; | |
475 | ||
476 | if (aes->src_len & (AES_BLOCK_SIZE - 1)) | |
477 | return -EINVAL; | |
478 | ||
479 | if (aes->iv_len != AES_BLOCK_SIZE) | |
480 | return -EINVAL; | |
481 | ||
482 | if (!aes->key || !aes->iv || !aes->src) | |
483 | return -EINVAL; | |
484 | ||
485 | if (aes->cmac_final) { | |
486 | if (aes->cmac_key_len != AES_BLOCK_SIZE) | |
487 | return -EINVAL; | |
488 | ||
489 | if (!aes->cmac_key) | |
490 | return -EINVAL; | |
491 | } | |
492 | ||
956ee21a GH |
493 | BUILD_BUG_ON(CCP_AES_KEY_SB_COUNT != 1); |
494 | BUILD_BUG_ON(CCP_AES_CTX_SB_COUNT != 1); | |
63b94509 TL |
495 | |
496 | ret = -EIO; | |
497 | memset(&op, 0, sizeof(op)); | |
498 | op.cmd_q = cmd_q; | |
4b394a23 | 499 | op.jobid = CCP_NEW_JOBID(cmd_q->ccp); |
956ee21a GH |
500 | op.sb_key = cmd_q->sb_key; |
501 | op.sb_ctx = cmd_q->sb_ctx; | |
63b94509 TL |
502 | op.init = 1; |
503 | op.u.aes.type = aes->type; | |
504 | op.u.aes.mode = aes->mode; | |
505 | op.u.aes.action = aes->action; | |
506 | ||
956ee21a | 507 | /* All supported key sizes fit in a single (32-byte) SB entry |
63b94509 TL |
508 | * and must be in little endian format. Use the 256-bit byte |
509 | * swap passthru option to convert from big endian to little | |
510 | * endian. | |
511 | */ | |
512 | ret = ccp_init_dm_workarea(&key, cmd_q, | |
956ee21a | 513 | CCP_AES_KEY_SB_COUNT * CCP_SB_BYTES, |
63b94509 TL |
514 | DMA_TO_DEVICE); |
515 | if (ret) | |
516 | return ret; | |
517 | ||
956ee21a | 518 | dm_offset = CCP_SB_BYTES - aes->key_len; |
b5ba0835 GH |
519 | ret = ccp_set_dm_area(&key, dm_offset, aes->key, 0, aes->key_len); |
520 | if (ret) | |
521 | goto e_key; | |
956ee21a GH |
522 | ret = ccp_copy_to_sb(cmd_q, &key, op.jobid, op.sb_key, |
523 | CCP_PASSTHRU_BYTESWAP_256BIT); | |
63b94509 TL |
524 | if (ret) { |
525 | cmd->engine_error = cmd_q->cmd_error; | |
526 | goto e_key; | |
527 | } | |
528 | ||
956ee21a | 529 | /* The AES context fits in a single (32-byte) SB entry and |
63b94509 TL |
530 | * must be in little endian format. Use the 256-bit byte swap |
531 | * passthru option to convert from big endian to little endian. | |
532 | */ | |
533 | ret = ccp_init_dm_workarea(&ctx, cmd_q, | |
956ee21a | 534 | CCP_AES_CTX_SB_COUNT * CCP_SB_BYTES, |
63b94509 TL |
535 | DMA_BIDIRECTIONAL); |
536 | if (ret) | |
537 | goto e_key; | |
538 | ||
956ee21a | 539 | dm_offset = CCP_SB_BYTES - AES_BLOCK_SIZE; |
b5ba0835 GH |
540 | ret = ccp_set_dm_area(&ctx, dm_offset, aes->iv, 0, aes->iv_len); |
541 | if (ret) | |
542 | goto e_ctx; | |
956ee21a GH |
543 | ret = ccp_copy_to_sb(cmd_q, &ctx, op.jobid, op.sb_ctx, |
544 | CCP_PASSTHRU_BYTESWAP_256BIT); | |
63b94509 TL |
545 | if (ret) { |
546 | cmd->engine_error = cmd_q->cmd_error; | |
547 | goto e_ctx; | |
548 | } | |
549 | ||
550 | /* Send data to the CCP AES engine */ | |
551 | ret = ccp_init_data(&src, cmd_q, aes->src, aes->src_len, | |
552 | AES_BLOCK_SIZE, DMA_TO_DEVICE); | |
553 | if (ret) | |
554 | goto e_ctx; | |
555 | ||
556 | while (src.sg_wa.bytes_left) { | |
557 | ccp_prepare_data(&src, NULL, &op, AES_BLOCK_SIZE, true); | |
558 | if (aes->cmac_final && !src.sg_wa.bytes_left) { | |
559 | op.eom = 1; | |
560 | ||
561 | /* Push the K1/K2 key to the CCP now */ | |
956ee21a GH |
562 | ret = ccp_copy_from_sb(cmd_q, &ctx, op.jobid, |
563 | op.sb_ctx, | |
564 | CCP_PASSTHRU_BYTESWAP_256BIT); | |
63b94509 TL |
565 | if (ret) { |
566 | cmd->engine_error = cmd_q->cmd_error; | |
567 | goto e_src; | |
568 | } | |
569 | ||
b5ba0835 GH |
570 | ret = ccp_set_dm_area(&ctx, 0, aes->cmac_key, 0, |
571 | aes->cmac_key_len); | |
572 | if (ret) | |
573 | goto e_src; | |
956ee21a GH |
574 | ret = ccp_copy_to_sb(cmd_q, &ctx, op.jobid, 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 | } | |
581 | ||
a43eb985 | 582 | ret = cmd_q->ccp->vdata->perform->aes(&op); |
63b94509 TL |
583 | if (ret) { |
584 | cmd->engine_error = cmd_q->cmd_error; | |
585 | goto e_src; | |
586 | } | |
587 | ||
588 | ccp_process_data(&src, NULL, &op); | |
589 | } | |
590 | ||
591 | /* Retrieve the AES context - convert from LE to BE using | |
592 | * 32-byte (256-bit) byteswapping | |
593 | */ | |
956ee21a GH |
594 | ret = ccp_copy_from_sb(cmd_q, &ctx, op.jobid, op.sb_ctx, |
595 | CCP_PASSTHRU_BYTESWAP_256BIT); | |
63b94509 TL |
596 | if (ret) { |
597 | cmd->engine_error = cmd_q->cmd_error; | |
598 | goto e_src; | |
599 | } | |
600 | ||
601 | /* ...but we only need AES_BLOCK_SIZE bytes */ | |
956ee21a | 602 | dm_offset = CCP_SB_BYTES - AES_BLOCK_SIZE; |
63b94509 TL |
603 | ccp_get_dm_area(&ctx, dm_offset, aes->iv, 0, aes->iv_len); |
604 | ||
605 | e_src: | |
606 | ccp_free_data(&src, cmd_q); | |
607 | ||
608 | e_ctx: | |
609 | ccp_dm_free(&ctx); | |
610 | ||
611 | e_key: | |
612 | ccp_dm_free(&key); | |
613 | ||
614 | return ret; | |
615 | } | |
616 | ||
36cf515b GH |
617 | static int ccp_run_aes_gcm_cmd(struct ccp_cmd_queue *cmd_q, |
618 | struct ccp_cmd *cmd) | |
619 | { | |
620 | struct ccp_aes_engine *aes = &cmd->u.aes; | |
621 | struct ccp_dm_workarea key, ctx, final_wa, tag; | |
622 | struct ccp_data src, dst; | |
623 | struct ccp_data aad; | |
624 | struct ccp_op op; | |
625 | ||
626 | unsigned long long *final; | |
627 | unsigned int dm_offset; | |
3417660c | 628 | unsigned int authsize; |
4e6ddfef | 629 | unsigned int jobid; |
36cf515b GH |
630 | unsigned int ilen; |
631 | bool in_place = true; /* Default value */ | |
632 | int ret; | |
633 | ||
634 | struct scatterlist *p_inp, sg_inp[2]; | |
635 | struct scatterlist *p_tag, sg_tag[2]; | |
636 | struct scatterlist *p_outp, sg_outp[2]; | |
637 | struct scatterlist *p_aad; | |
638 | ||
639 | if (!aes->iv) | |
640 | return -EINVAL; | |
641 | ||
642 | if (!((aes->key_len == AES_KEYSIZE_128) || | |
643 | (aes->key_len == AES_KEYSIZE_192) || | |
644 | (aes->key_len == AES_KEYSIZE_256))) | |
645 | return -EINVAL; | |
646 | ||
647 | if (!aes->key) /* Gotta have a key SGL */ | |
648 | return -EINVAL; | |
649 | ||
3417660c GH |
650 | /* Zero defaults to 16 bytes, the maximum size */ |
651 | authsize = aes->authsize ? aes->authsize : AES_BLOCK_SIZE; | |
652 | switch (authsize) { | |
653 | case 16: | |
654 | case 15: | |
655 | case 14: | |
656 | case 13: | |
657 | case 12: | |
658 | case 8: | |
659 | case 4: | |
660 | break; | |
661 | default: | |
662 | return -EINVAL; | |
663 | } | |
664 | ||
36cf515b GH |
665 | /* First, decompose the source buffer into AAD & PT, |
666 | * and the destination buffer into AAD, CT & tag, or | |
667 | * the input into CT & tag. | |
668 | * It is expected that the input and output SGs will | |
669 | * be valid, even if the AAD and input lengths are 0. | |
670 | */ | |
671 | p_aad = aes->src; | |
672 | p_inp = scatterwalk_ffwd(sg_inp, aes->src, aes->aad_len); | |
673 | p_outp = scatterwalk_ffwd(sg_outp, aes->dst, aes->aad_len); | |
674 | if (aes->action == CCP_AES_ACTION_ENCRYPT) { | |
675 | ilen = aes->src_len; | |
676 | p_tag = scatterwalk_ffwd(sg_tag, p_outp, ilen); | |
677 | } else { | |
678 | /* Input length for decryption includes tag */ | |
3417660c | 679 | ilen = aes->src_len - authsize; |
36cf515b GH |
680 | p_tag = scatterwalk_ffwd(sg_tag, p_inp, ilen); |
681 | } | |
682 | ||
4e6ddfef HG |
683 | jobid = CCP_NEW_JOBID(cmd_q->ccp); |
684 | ||
36cf515b GH |
685 | memset(&op, 0, sizeof(op)); |
686 | op.cmd_q = cmd_q; | |
4e6ddfef | 687 | op.jobid = jobid; |
36cf515b GH |
688 | op.sb_key = cmd_q->sb_key; /* Pre-allocated */ |
689 | op.sb_ctx = cmd_q->sb_ctx; /* Pre-allocated */ | |
690 | op.init = 1; | |
691 | op.u.aes.type = aes->type; | |
692 | ||
693 | /* Copy the key to the LSB */ | |
694 | ret = ccp_init_dm_workarea(&key, cmd_q, | |
695 | CCP_AES_CTX_SB_COUNT * CCP_SB_BYTES, | |
696 | DMA_TO_DEVICE); | |
697 | if (ret) | |
698 | return ret; | |
699 | ||
700 | dm_offset = CCP_SB_BYTES - aes->key_len; | |
b5ba0835 GH |
701 | ret = ccp_set_dm_area(&key, dm_offset, aes->key, 0, aes->key_len); |
702 | if (ret) | |
703 | goto e_key; | |
36cf515b GH |
704 | ret = ccp_copy_to_sb(cmd_q, &key, op.jobid, op.sb_key, |
705 | CCP_PASSTHRU_BYTESWAP_256BIT); | |
706 | if (ret) { | |
707 | cmd->engine_error = cmd_q->cmd_error; | |
708 | goto e_key; | |
709 | } | |
710 | ||
711 | /* Copy the context (IV) to the LSB. | |
712 | * There is an assumption here that the IV is 96 bits in length, plus | |
713 | * a nonce of 32 bits. If no IV is present, use a zeroed buffer. | |
714 | */ | |
715 | ret = ccp_init_dm_workarea(&ctx, cmd_q, | |
716 | CCP_AES_CTX_SB_COUNT * CCP_SB_BYTES, | |
717 | DMA_BIDIRECTIONAL); | |
718 | if (ret) | |
719 | goto e_key; | |
720 | ||
721 | dm_offset = CCP_AES_CTX_SB_COUNT * CCP_SB_BYTES - aes->iv_len; | |
b5ba0835 GH |
722 | ret = ccp_set_dm_area(&ctx, dm_offset, aes->iv, 0, aes->iv_len); |
723 | if (ret) | |
724 | goto e_ctx; | |
36cf515b GH |
725 | |
726 | ret = ccp_copy_to_sb(cmd_q, &ctx, op.jobid, op.sb_ctx, | |
727 | CCP_PASSTHRU_BYTESWAP_256BIT); | |
728 | if (ret) { | |
729 | cmd->engine_error = cmd_q->cmd_error; | |
730 | goto e_ctx; | |
731 | } | |
732 | ||
733 | op.init = 1; | |
734 | if (aes->aad_len > 0) { | |
735 | /* Step 1: Run a GHASH over the Additional Authenticated Data */ | |
736 | ret = ccp_init_data(&aad, cmd_q, p_aad, aes->aad_len, | |
737 | AES_BLOCK_SIZE, | |
738 | DMA_TO_DEVICE); | |
739 | if (ret) | |
740 | goto e_ctx; | |
741 | ||
742 | op.u.aes.mode = CCP_AES_MODE_GHASH; | |
743 | op.u.aes.action = CCP_AES_GHASHAAD; | |
744 | ||
745 | while (aad.sg_wa.bytes_left) { | |
746 | ccp_prepare_data(&aad, NULL, &op, AES_BLOCK_SIZE, true); | |
747 | ||
748 | ret = cmd_q->ccp->vdata->perform->aes(&op); | |
749 | if (ret) { | |
750 | cmd->engine_error = cmd_q->cmd_error; | |
751 | goto e_aad; | |
752 | } | |
753 | ||
754 | ccp_process_data(&aad, NULL, &op); | |
755 | op.init = 0; | |
756 | } | |
757 | } | |
758 | ||
759 | op.u.aes.mode = CCP_AES_MODE_GCTR; | |
760 | op.u.aes.action = aes->action; | |
761 | ||
762 | if (ilen > 0) { | |
763 | /* Step 2: Run a GCTR over the plaintext */ | |
764 | in_place = (sg_virt(p_inp) == sg_virt(p_outp)) ? true : false; | |
765 | ||
766 | ret = ccp_init_data(&src, cmd_q, p_inp, ilen, | |
767 | AES_BLOCK_SIZE, | |
768 | in_place ? DMA_BIDIRECTIONAL | |
769 | : DMA_TO_DEVICE); | |
770 | if (ret) | |
771 | goto e_ctx; | |
772 | ||
773 | if (in_place) { | |
774 | dst = src; | |
775 | } else { | |
776 | ret = ccp_init_data(&dst, cmd_q, p_outp, ilen, | |
777 | AES_BLOCK_SIZE, DMA_FROM_DEVICE); | |
778 | if (ret) | |
779 | goto e_src; | |
780 | } | |
781 | ||
782 | op.soc = 0; | |
783 | op.eom = 0; | |
784 | op.init = 1; | |
785 | while (src.sg_wa.bytes_left) { | |
786 | ccp_prepare_data(&src, &dst, &op, AES_BLOCK_SIZE, true); | |
787 | if (!src.sg_wa.bytes_left) { | |
b92747ab | 788 | unsigned int nbytes = ilen % AES_BLOCK_SIZE; |
36cf515b GH |
789 | |
790 | if (nbytes) { | |
791 | op.eom = 1; | |
792 | op.u.aes.size = (nbytes * 8) - 1; | |
793 | } | |
794 | } | |
795 | ||
796 | ret = cmd_q->ccp->vdata->perform->aes(&op); | |
797 | if (ret) { | |
798 | cmd->engine_error = cmd_q->cmd_error; | |
799 | goto e_dst; | |
800 | } | |
801 | ||
802 | ccp_process_data(&src, &dst, &op); | |
803 | op.init = 0; | |
804 | } | |
805 | } | |
806 | ||
807 | /* Step 3: Update the IV portion of the context with the original IV */ | |
808 | ret = ccp_copy_from_sb(cmd_q, &ctx, op.jobid, op.sb_ctx, | |
809 | CCP_PASSTHRU_BYTESWAP_256BIT); | |
810 | if (ret) { | |
811 | cmd->engine_error = cmd_q->cmd_error; | |
812 | goto e_dst; | |
813 | } | |
814 | ||
b5ba0835 GH |
815 | ret = ccp_set_dm_area(&ctx, dm_offset, aes->iv, 0, aes->iv_len); |
816 | if (ret) | |
817 | goto e_dst; | |
36cf515b GH |
818 | |
819 | ret = ccp_copy_to_sb(cmd_q, &ctx, op.jobid, op.sb_ctx, | |
820 | CCP_PASSTHRU_BYTESWAP_256BIT); | |
821 | if (ret) { | |
822 | cmd->engine_error = cmd_q->cmd_error; | |
823 | goto e_dst; | |
824 | } | |
825 | ||
826 | /* Step 4: Concatenate the lengths of the AAD and source, and | |
827 | * hash that 16 byte buffer. | |
828 | */ | |
829 | ret = ccp_init_dm_workarea(&final_wa, cmd_q, AES_BLOCK_SIZE, | |
830 | DMA_BIDIRECTIONAL); | |
831 | if (ret) | |
832 | goto e_dst; | |
833 | final = (unsigned long long *) final_wa.address; | |
834 | final[0] = cpu_to_be64(aes->aad_len * 8); | |
835 | final[1] = cpu_to_be64(ilen * 8); | |
836 | ||
4e6ddfef HG |
837 | memset(&op, 0, sizeof(op)); |
838 | op.cmd_q = cmd_q; | |
839 | op.jobid = jobid; | |
840 | op.sb_key = cmd_q->sb_key; /* Pre-allocated */ | |
841 | op.sb_ctx = cmd_q->sb_ctx; /* Pre-allocated */ | |
842 | op.init = 1; | |
843 | op.u.aes.type = aes->type; | |
36cf515b GH |
844 | op.u.aes.mode = CCP_AES_MODE_GHASH; |
845 | op.u.aes.action = CCP_AES_GHASHFINAL; | |
846 | op.src.type = CCP_MEMTYPE_SYSTEM; | |
847 | op.src.u.dma.address = final_wa.dma.address; | |
848 | op.src.u.dma.length = AES_BLOCK_SIZE; | |
849 | op.dst.type = CCP_MEMTYPE_SYSTEM; | |
850 | op.dst.u.dma.address = final_wa.dma.address; | |
851 | op.dst.u.dma.length = AES_BLOCK_SIZE; | |
852 | op.eom = 1; | |
853 | op.u.aes.size = 0; | |
854 | ret = cmd_q->ccp->vdata->perform->aes(&op); | |
855 | if (ret) | |
856 | goto e_dst; | |
857 | ||
858 | if (aes->action == CCP_AES_ACTION_ENCRYPT) { | |
859 | /* Put the ciphered tag after the ciphertext. */ | |
3417660c | 860 | ccp_get_dm_area(&final_wa, 0, p_tag, 0, authsize); |
36cf515b GH |
861 | } else { |
862 | /* Does this ciphered tag match the input? */ | |
3417660c | 863 | ret = ccp_init_dm_workarea(&tag, cmd_q, authsize, |
36cf515b GH |
864 | DMA_BIDIRECTIONAL); |
865 | if (ret) | |
866 | goto e_tag; | |
3417660c | 867 | ret = ccp_set_dm_area(&tag, 0, p_tag, 0, authsize); |
b5ba0835 GH |
868 | if (ret) |
869 | goto e_tag; | |
36cf515b | 870 | |
dcfc3e05 | 871 | ret = crypto_memneq(tag.address, final_wa.address, |
3417660c | 872 | authsize) ? -EBADMSG : 0; |
36cf515b GH |
873 | ccp_dm_free(&tag); |
874 | } | |
875 | ||
876 | e_tag: | |
877 | ccp_dm_free(&final_wa); | |
878 | ||
879 | e_dst: | |
8f67c9be | 880 | if (ilen > 0 && !in_place) |
36cf515b GH |
881 | ccp_free_data(&dst, cmd_q); |
882 | ||
883 | e_src: | |
8f67c9be | 884 | if (ilen > 0) |
36cf515b GH |
885 | ccp_free_data(&src, cmd_q); |
886 | ||
887 | e_aad: | |
888 | if (aes->aad_len) | |
889 | ccp_free_data(&aad, cmd_q); | |
890 | ||
891 | e_ctx: | |
892 | ccp_dm_free(&ctx); | |
893 | ||
894 | e_key: | |
895 | ccp_dm_free(&key); | |
896 | ||
897 | return ret; | |
898 | } | |
899 | ||
63b94509 TL |
900 | static int ccp_run_aes_cmd(struct ccp_cmd_queue *cmd_q, struct ccp_cmd *cmd) |
901 | { | |
902 | struct ccp_aes_engine *aes = &cmd->u.aes; | |
903 | struct ccp_dm_workarea key, ctx; | |
904 | struct ccp_data src, dst; | |
905 | struct ccp_op op; | |
906 | unsigned int dm_offset; | |
907 | bool in_place = false; | |
908 | int ret; | |
909 | ||
910 | if (aes->mode == CCP_AES_MODE_CMAC) | |
911 | return ccp_run_aes_cmac_cmd(cmd_q, cmd); | |
912 | ||
36cf515b GH |
913 | if (aes->mode == CCP_AES_MODE_GCM) |
914 | return ccp_run_aes_gcm_cmd(cmd_q, cmd); | |
915 | ||
63b94509 TL |
916 | if (!((aes->key_len == AES_KEYSIZE_128) || |
917 | (aes->key_len == AES_KEYSIZE_192) || | |
918 | (aes->key_len == AES_KEYSIZE_256))) | |
919 | return -EINVAL; | |
920 | ||
921 | if (((aes->mode == CCP_AES_MODE_ECB) || | |
922 | (aes->mode == CCP_AES_MODE_CBC) || | |
923 | (aes->mode == CCP_AES_MODE_CFB)) && | |
924 | (aes->src_len & (AES_BLOCK_SIZE - 1))) | |
925 | return -EINVAL; | |
926 | ||
927 | if (!aes->key || !aes->src || !aes->dst) | |
928 | return -EINVAL; | |
929 | ||
930 | if (aes->mode != CCP_AES_MODE_ECB) { | |
931 | if (aes->iv_len != AES_BLOCK_SIZE) | |
932 | return -EINVAL; | |
933 | ||
934 | if (!aes->iv) | |
935 | return -EINVAL; | |
936 | } | |
937 | ||
956ee21a GH |
938 | BUILD_BUG_ON(CCP_AES_KEY_SB_COUNT != 1); |
939 | BUILD_BUG_ON(CCP_AES_CTX_SB_COUNT != 1); | |
63b94509 TL |
940 | |
941 | ret = -EIO; | |
942 | memset(&op, 0, sizeof(op)); | |
943 | op.cmd_q = cmd_q; | |
4b394a23 | 944 | op.jobid = CCP_NEW_JOBID(cmd_q->ccp); |
956ee21a GH |
945 | op.sb_key = cmd_q->sb_key; |
946 | op.sb_ctx = cmd_q->sb_ctx; | |
63b94509 TL |
947 | op.init = (aes->mode == CCP_AES_MODE_ECB) ? 0 : 1; |
948 | op.u.aes.type = aes->type; | |
949 | op.u.aes.mode = aes->mode; | |
950 | op.u.aes.action = aes->action; | |
951 | ||
956ee21a | 952 | /* All supported key sizes fit in a single (32-byte) SB entry |
63b94509 TL |
953 | * and must be in little endian format. Use the 256-bit byte |
954 | * swap passthru option to convert from big endian to little | |
955 | * endian. | |
956 | */ | |
957 | ret = ccp_init_dm_workarea(&key, cmd_q, | |
956ee21a | 958 | CCP_AES_KEY_SB_COUNT * CCP_SB_BYTES, |
63b94509 TL |
959 | DMA_TO_DEVICE); |
960 | if (ret) | |
961 | return ret; | |
962 | ||
956ee21a | 963 | dm_offset = CCP_SB_BYTES - aes->key_len; |
b5ba0835 GH |
964 | ret = ccp_set_dm_area(&key, dm_offset, aes->key, 0, aes->key_len); |
965 | if (ret) | |
966 | goto e_key; | |
956ee21a GH |
967 | ret = ccp_copy_to_sb(cmd_q, &key, op.jobid, op.sb_key, |
968 | CCP_PASSTHRU_BYTESWAP_256BIT); | |
63b94509 TL |
969 | if (ret) { |
970 | cmd->engine_error = cmd_q->cmd_error; | |
971 | goto e_key; | |
972 | } | |
973 | ||
956ee21a | 974 | /* The AES context fits in a single (32-byte) SB entry and |
63b94509 TL |
975 | * must be in little endian format. Use the 256-bit byte swap |
976 | * passthru option to convert from big endian to little endian. | |
977 | */ | |
978 | ret = ccp_init_dm_workarea(&ctx, cmd_q, | |
956ee21a | 979 | CCP_AES_CTX_SB_COUNT * CCP_SB_BYTES, |
63b94509 TL |
980 | DMA_BIDIRECTIONAL); |
981 | if (ret) | |
982 | goto e_key; | |
983 | ||
984 | if (aes->mode != CCP_AES_MODE_ECB) { | |
4b394a23 | 985 | /* Load the AES context - convert to LE */ |
956ee21a | 986 | dm_offset = CCP_SB_BYTES - AES_BLOCK_SIZE; |
b5ba0835 GH |
987 | ret = ccp_set_dm_area(&ctx, dm_offset, aes->iv, 0, aes->iv_len); |
988 | if (ret) | |
989 | goto e_ctx; | |
956ee21a GH |
990 | ret = ccp_copy_to_sb(cmd_q, &ctx, op.jobid, op.sb_ctx, |
991 | CCP_PASSTHRU_BYTESWAP_256BIT); | |
63b94509 TL |
992 | if (ret) { |
993 | cmd->engine_error = cmd_q->cmd_error; | |
994 | goto e_ctx; | |
995 | } | |
996 | } | |
f7cc02b3 GH |
997 | switch (aes->mode) { |
998 | case CCP_AES_MODE_CFB: /* CFB128 only */ | |
999 | case CCP_AES_MODE_CTR: | |
1000 | op.u.aes.size = AES_BLOCK_SIZE * BITS_PER_BYTE - 1; | |
1001 | break; | |
1002 | default: | |
1003 | op.u.aes.size = 0; | |
1004 | } | |
63b94509 TL |
1005 | |
1006 | /* Prepare the input and output data workareas. For in-place | |
1007 | * operations we need to set the dma direction to BIDIRECTIONAL | |
1008 | * and copy the src workarea to the dst workarea. | |
1009 | */ | |
1010 | if (sg_virt(aes->src) == sg_virt(aes->dst)) | |
1011 | in_place = true; | |
1012 | ||
1013 | ret = ccp_init_data(&src, cmd_q, aes->src, aes->src_len, | |
1014 | AES_BLOCK_SIZE, | |
1015 | in_place ? DMA_BIDIRECTIONAL : DMA_TO_DEVICE); | |
1016 | if (ret) | |
1017 | goto e_ctx; | |
1018 | ||
8db88467 | 1019 | if (in_place) { |
63b94509 | 1020 | dst = src; |
8db88467 | 1021 | } else { |
63b94509 TL |
1022 | ret = ccp_init_data(&dst, cmd_q, aes->dst, aes->src_len, |
1023 | AES_BLOCK_SIZE, DMA_FROM_DEVICE); | |
1024 | if (ret) | |
1025 | goto e_src; | |
1026 | } | |
1027 | ||
1028 | /* Send data to the CCP AES engine */ | |
1029 | while (src.sg_wa.bytes_left) { | |
1030 | ccp_prepare_data(&src, &dst, &op, AES_BLOCK_SIZE, true); | |
1031 | if (!src.sg_wa.bytes_left) { | |
1032 | op.eom = 1; | |
1033 | ||
1034 | /* Since we don't retrieve the AES context in ECB | |
1035 | * mode we have to wait for the operation to complete | |
1036 | * on the last piece of data | |
1037 | */ | |
1038 | if (aes->mode == CCP_AES_MODE_ECB) | |
1039 | op.soc = 1; | |
1040 | } | |
1041 | ||
a43eb985 | 1042 | ret = cmd_q->ccp->vdata->perform->aes(&op); |
63b94509 TL |
1043 | if (ret) { |
1044 | cmd->engine_error = cmd_q->cmd_error; | |
1045 | goto e_dst; | |
1046 | } | |
1047 | ||
1048 | ccp_process_data(&src, &dst, &op); | |
1049 | } | |
1050 | ||
1051 | if (aes->mode != CCP_AES_MODE_ECB) { | |
1052 | /* Retrieve the AES context - convert from LE to BE using | |
1053 | * 32-byte (256-bit) byteswapping | |
1054 | */ | |
956ee21a GH |
1055 | ret = ccp_copy_from_sb(cmd_q, &ctx, op.jobid, op.sb_ctx, |
1056 | CCP_PASSTHRU_BYTESWAP_256BIT); | |
63b94509 TL |
1057 | if (ret) { |
1058 | cmd->engine_error = cmd_q->cmd_error; | |
1059 | goto e_dst; | |
1060 | } | |
1061 | ||
1062 | /* ...but we only need AES_BLOCK_SIZE bytes */ | |
956ee21a | 1063 | dm_offset = CCP_SB_BYTES - AES_BLOCK_SIZE; |
63b94509 TL |
1064 | ccp_get_dm_area(&ctx, dm_offset, aes->iv, 0, aes->iv_len); |
1065 | } | |
1066 | ||
1067 | e_dst: | |
1068 | if (!in_place) | |
1069 | ccp_free_data(&dst, cmd_q); | |
1070 | ||
1071 | e_src: | |
1072 | ccp_free_data(&src, cmd_q); | |
1073 | ||
1074 | e_ctx: | |
1075 | ccp_dm_free(&ctx); | |
1076 | ||
1077 | e_key: | |
1078 | ccp_dm_free(&key); | |
1079 | ||
1080 | return ret; | |
1081 | } | |
1082 | ||
1083 | static int ccp_run_xts_aes_cmd(struct ccp_cmd_queue *cmd_q, | |
1084 | struct ccp_cmd *cmd) | |
1085 | { | |
1086 | struct ccp_xts_aes_engine *xts = &cmd->u.xts; | |
1087 | struct ccp_dm_workarea key, ctx; | |
1088 | struct ccp_data src, dst; | |
1089 | struct ccp_op op; | |
1090 | unsigned int unit_size, dm_offset; | |
1091 | bool in_place = false; | |
e652399e GH |
1092 | unsigned int sb_count; |
1093 | enum ccp_aes_type aestype; | |
63b94509 TL |
1094 | int ret; |
1095 | ||
1096 | switch (xts->unit_size) { | |
1097 | case CCP_XTS_AES_UNIT_SIZE_16: | |
1098 | unit_size = 16; | |
1099 | break; | |
1100 | case CCP_XTS_AES_UNIT_SIZE_512: | |
1101 | unit_size = 512; | |
1102 | break; | |
1103 | case CCP_XTS_AES_UNIT_SIZE_1024: | |
1104 | unit_size = 1024; | |
1105 | break; | |
1106 | case CCP_XTS_AES_UNIT_SIZE_2048: | |
1107 | unit_size = 2048; | |
1108 | break; | |
1109 | case CCP_XTS_AES_UNIT_SIZE_4096: | |
1110 | unit_size = 4096; | |
1111 | break; | |
1112 | ||
1113 | default: | |
1114 | return -EINVAL; | |
1115 | } | |
1116 | ||
e652399e GH |
1117 | if (xts->key_len == AES_KEYSIZE_128) |
1118 | aestype = CCP_AES_TYPE_128; | |
5060ffc9 GH |
1119 | else if (xts->key_len == AES_KEYSIZE_256) |
1120 | aestype = CCP_AES_TYPE_256; | |
e652399e | 1121 | else |
63b94509 TL |
1122 | return -EINVAL; |
1123 | ||
1124 | if (!xts->final && (xts->src_len & (AES_BLOCK_SIZE - 1))) | |
1125 | return -EINVAL; | |
1126 | ||
1127 | if (xts->iv_len != AES_BLOCK_SIZE) | |
1128 | return -EINVAL; | |
1129 | ||
1130 | if (!xts->key || !xts->iv || !xts->src || !xts->dst) | |
1131 | return -EINVAL; | |
1132 | ||
956ee21a GH |
1133 | BUILD_BUG_ON(CCP_XTS_AES_KEY_SB_COUNT != 1); |
1134 | BUILD_BUG_ON(CCP_XTS_AES_CTX_SB_COUNT != 1); | |
63b94509 TL |
1135 | |
1136 | ret = -EIO; | |
1137 | memset(&op, 0, sizeof(op)); | |
1138 | op.cmd_q = cmd_q; | |
4b394a23 | 1139 | op.jobid = CCP_NEW_JOBID(cmd_q->ccp); |
956ee21a GH |
1140 | op.sb_key = cmd_q->sb_key; |
1141 | op.sb_ctx = cmd_q->sb_ctx; | |
63b94509 | 1142 | op.init = 1; |
e652399e | 1143 | op.u.xts.type = aestype; |
63b94509 TL |
1144 | op.u.xts.action = xts->action; |
1145 | op.u.xts.unit_size = xts->unit_size; | |
1146 | ||
e652399e GH |
1147 | /* A version 3 device only supports 128-bit keys, which fits into a |
1148 | * single SB entry. A version 5 device uses a 512-bit vector, so two | |
1149 | * SB entries. | |
63b94509 | 1150 | */ |
e652399e GH |
1151 | if (cmd_q->ccp->vdata->version == CCP_VERSION(3, 0)) |
1152 | sb_count = CCP_XTS_AES_KEY_SB_COUNT; | |
1153 | else | |
1154 | sb_count = CCP5_XTS_AES_KEY_SB_COUNT; | |
63b94509 | 1155 | ret = ccp_init_dm_workarea(&key, cmd_q, |
e652399e | 1156 | sb_count * CCP_SB_BYTES, |
63b94509 TL |
1157 | DMA_TO_DEVICE); |
1158 | if (ret) | |
1159 | return ret; | |
1160 | ||
e652399e GH |
1161 | if (cmd_q->ccp->vdata->version == CCP_VERSION(3, 0)) { |
1162 | /* All supported key sizes must be in little endian format. | |
1163 | * Use the 256-bit byte swap passthru option to convert from | |
1164 | * big endian to little endian. | |
1165 | */ | |
1166 | dm_offset = CCP_SB_BYTES - AES_KEYSIZE_128; | |
b5ba0835 GH |
1167 | ret = ccp_set_dm_area(&key, dm_offset, xts->key, 0, xts->key_len); |
1168 | if (ret) | |
1169 | goto e_key; | |
1170 | ret = ccp_set_dm_area(&key, 0, xts->key, xts->key_len, xts->key_len); | |
1171 | if (ret) | |
1172 | goto e_key; | |
e652399e GH |
1173 | } else { |
1174 | /* Version 5 CCPs use a 512-bit space for the key: each portion | |
1175 | * occupies 256 bits, or one entire slot, and is zero-padded. | |
1176 | */ | |
1177 | unsigned int pad; | |
1178 | ||
1179 | dm_offset = CCP_SB_BYTES; | |
1180 | pad = dm_offset - xts->key_len; | |
b5ba0835 GH |
1181 | ret = ccp_set_dm_area(&key, pad, xts->key, 0, xts->key_len); |
1182 | if (ret) | |
1183 | goto e_key; | |
1184 | ret = ccp_set_dm_area(&key, dm_offset + pad, xts->key, | |
1185 | xts->key_len, xts->key_len); | |
1186 | if (ret) | |
1187 | goto e_key; | |
e652399e | 1188 | } |
956ee21a GH |
1189 | ret = ccp_copy_to_sb(cmd_q, &key, op.jobid, op.sb_key, |
1190 | CCP_PASSTHRU_BYTESWAP_256BIT); | |
63b94509 TL |
1191 | if (ret) { |
1192 | cmd->engine_error = cmd_q->cmd_error; | |
1193 | goto e_key; | |
1194 | } | |
1195 | ||
956ee21a | 1196 | /* The AES context fits in a single (32-byte) SB entry and |
63b94509 TL |
1197 | * for XTS is already in little endian format so no byte swapping |
1198 | * is needed. | |
1199 | */ | |
1200 | ret = ccp_init_dm_workarea(&ctx, cmd_q, | |
956ee21a | 1201 | CCP_XTS_AES_CTX_SB_COUNT * CCP_SB_BYTES, |
63b94509 TL |
1202 | DMA_BIDIRECTIONAL); |
1203 | if (ret) | |
1204 | goto e_key; | |
1205 | ||
b5ba0835 GH |
1206 | ret = ccp_set_dm_area(&ctx, 0, xts->iv, 0, xts->iv_len); |
1207 | if (ret) | |
1208 | goto e_ctx; | |
956ee21a GH |
1209 | ret = ccp_copy_to_sb(cmd_q, &ctx, op.jobid, op.sb_ctx, |
1210 | CCP_PASSTHRU_BYTESWAP_NOOP); | |
63b94509 TL |
1211 | if (ret) { |
1212 | cmd->engine_error = cmd_q->cmd_error; | |
1213 | goto e_ctx; | |
1214 | } | |
1215 | ||
1216 | /* Prepare the input and output data workareas. For in-place | |
1217 | * operations we need to set the dma direction to BIDIRECTIONAL | |
1218 | * and copy the src workarea to the dst workarea. | |
1219 | */ | |
1220 | if (sg_virt(xts->src) == sg_virt(xts->dst)) | |
1221 | in_place = true; | |
1222 | ||
1223 | ret = ccp_init_data(&src, cmd_q, xts->src, xts->src_len, | |
1224 | unit_size, | |
1225 | in_place ? DMA_BIDIRECTIONAL : DMA_TO_DEVICE); | |
1226 | if (ret) | |
1227 | goto e_ctx; | |
1228 | ||
8db88467 | 1229 | if (in_place) { |
63b94509 | 1230 | dst = src; |
8db88467 | 1231 | } else { |
63b94509 TL |
1232 | ret = ccp_init_data(&dst, cmd_q, xts->dst, xts->src_len, |
1233 | unit_size, DMA_FROM_DEVICE); | |
1234 | if (ret) | |
1235 | goto e_src; | |
1236 | } | |
1237 | ||
1238 | /* Send data to the CCP AES engine */ | |
1239 | while (src.sg_wa.bytes_left) { | |
1240 | ccp_prepare_data(&src, &dst, &op, unit_size, true); | |
1241 | if (!src.sg_wa.bytes_left) | |
1242 | op.eom = 1; | |
1243 | ||
a43eb985 | 1244 | ret = cmd_q->ccp->vdata->perform->xts_aes(&op); |
63b94509 TL |
1245 | if (ret) { |
1246 | cmd->engine_error = cmd_q->cmd_error; | |
1247 | goto e_dst; | |
1248 | } | |
1249 | ||
1250 | ccp_process_data(&src, &dst, &op); | |
1251 | } | |
1252 | ||
1253 | /* Retrieve the AES context - convert from LE to BE using | |
1254 | * 32-byte (256-bit) byteswapping | |
1255 | */ | |
956ee21a GH |
1256 | ret = ccp_copy_from_sb(cmd_q, &ctx, op.jobid, op.sb_ctx, |
1257 | CCP_PASSTHRU_BYTESWAP_256BIT); | |
63b94509 TL |
1258 | if (ret) { |
1259 | cmd->engine_error = cmd_q->cmd_error; | |
1260 | goto e_dst; | |
1261 | } | |
1262 | ||
1263 | /* ...but we only need AES_BLOCK_SIZE bytes */ | |
956ee21a | 1264 | dm_offset = CCP_SB_BYTES - AES_BLOCK_SIZE; |
63b94509 TL |
1265 | ccp_get_dm_area(&ctx, dm_offset, xts->iv, 0, xts->iv_len); |
1266 | ||
1267 | e_dst: | |
1268 | if (!in_place) | |
1269 | ccp_free_data(&dst, cmd_q); | |
1270 | ||
1271 | e_src: | |
1272 | ccp_free_data(&src, cmd_q); | |
1273 | ||
1274 | e_ctx: | |
1275 | ccp_dm_free(&ctx); | |
1276 | ||
1277 | e_key: | |
1278 | ccp_dm_free(&key); | |
1279 | ||
1280 | return ret; | |
1281 | } | |
1282 | ||
990672d4 GH |
1283 | static int ccp_run_des3_cmd(struct ccp_cmd_queue *cmd_q, struct ccp_cmd *cmd) |
1284 | { | |
1285 | struct ccp_des3_engine *des3 = &cmd->u.des3; | |
1286 | ||
1287 | struct ccp_dm_workarea key, ctx; | |
1288 | struct ccp_data src, dst; | |
1289 | struct ccp_op op; | |
1290 | unsigned int dm_offset; | |
1291 | unsigned int len_singlekey; | |
1292 | bool in_place = false; | |
1293 | int ret; | |
1294 | ||
1295 | /* Error checks */ | |
1296 | if (!cmd_q->ccp->vdata->perform->des3) | |
1297 | return -EINVAL; | |
1298 | ||
1299 | if (des3->key_len != DES3_EDE_KEY_SIZE) | |
1300 | return -EINVAL; | |
1301 | ||
1302 | if (((des3->mode == CCP_DES3_MODE_ECB) || | |
1303 | (des3->mode == CCP_DES3_MODE_CBC)) && | |
1304 | (des3->src_len & (DES3_EDE_BLOCK_SIZE - 1))) | |
1305 | return -EINVAL; | |
1306 | ||
1307 | if (!des3->key || !des3->src || !des3->dst) | |
1308 | return -EINVAL; | |
1309 | ||
1310 | if (des3->mode != CCP_DES3_MODE_ECB) { | |
1311 | if (des3->iv_len != DES3_EDE_BLOCK_SIZE) | |
1312 | return -EINVAL; | |
1313 | ||
1314 | if (!des3->iv) | |
1315 | return -EINVAL; | |
1316 | } | |
1317 | ||
1318 | ret = -EIO; | |
1319 | /* Zero out all the fields of the command desc */ | |
1320 | memset(&op, 0, sizeof(op)); | |
1321 | ||
1322 | /* Set up the Function field */ | |
1323 | op.cmd_q = cmd_q; | |
1324 | op.jobid = CCP_NEW_JOBID(cmd_q->ccp); | |
1325 | op.sb_key = cmd_q->sb_key; | |
1326 | ||
1327 | op.init = (des3->mode == CCP_DES3_MODE_ECB) ? 0 : 1; | |
1328 | op.u.des3.type = des3->type; | |
1329 | op.u.des3.mode = des3->mode; | |
1330 | op.u.des3.action = des3->action; | |
1331 | ||
1332 | /* | |
1333 | * All supported key sizes fit in a single (32-byte) KSB entry and | |
1334 | * (like AES) must be in little endian format. Use the 256-bit byte | |
1335 | * swap passthru option to convert from big endian to little endian. | |
1336 | */ | |
1337 | ret = ccp_init_dm_workarea(&key, cmd_q, | |
1338 | CCP_DES3_KEY_SB_COUNT * CCP_SB_BYTES, | |
1339 | DMA_TO_DEVICE); | |
1340 | if (ret) | |
1341 | return ret; | |
1342 | ||
1343 | /* | |
1344 | * The contents of the key triplet are in the reverse order of what | |
1345 | * is required by the engine. Copy the 3 pieces individually to put | |
1346 | * them where they belong. | |
1347 | */ | |
1348 | dm_offset = CCP_SB_BYTES - des3->key_len; /* Basic offset */ | |
1349 | ||
1350 | len_singlekey = des3->key_len / 3; | |
b5ba0835 GH |
1351 | ret = ccp_set_dm_area(&key, dm_offset + 2 * len_singlekey, |
1352 | des3->key, 0, len_singlekey); | |
1353 | if (ret) | |
1354 | goto e_key; | |
1355 | ret = ccp_set_dm_area(&key, dm_offset + len_singlekey, | |
1356 | des3->key, len_singlekey, len_singlekey); | |
1357 | if (ret) | |
1358 | goto e_key; | |
1359 | ret = ccp_set_dm_area(&key, dm_offset, | |
1360 | des3->key, 2 * len_singlekey, len_singlekey); | |
1361 | if (ret) | |
1362 | goto e_key; | |
990672d4 GH |
1363 | |
1364 | /* Copy the key to the SB */ | |
1365 | ret = ccp_copy_to_sb(cmd_q, &key, op.jobid, op.sb_key, | |
1366 | CCP_PASSTHRU_BYTESWAP_256BIT); | |
1367 | if (ret) { | |
1368 | cmd->engine_error = cmd_q->cmd_error; | |
1369 | goto e_key; | |
1370 | } | |
1371 | ||
1372 | /* | |
1373 | * The DES3 context fits in a single (32-byte) KSB entry and | |
1374 | * must be in little endian format. Use the 256-bit byte swap | |
1375 | * passthru option to convert from big endian to little endian. | |
1376 | */ | |
1377 | if (des3->mode != CCP_DES3_MODE_ECB) { | |
1378 | u32 load_mode; | |
1379 | ||
1380 | op.sb_ctx = cmd_q->sb_ctx; | |
1381 | ||
1382 | ret = ccp_init_dm_workarea(&ctx, cmd_q, | |
1383 | CCP_DES3_CTX_SB_COUNT * CCP_SB_BYTES, | |
1384 | DMA_BIDIRECTIONAL); | |
1385 | if (ret) | |
1386 | goto e_key; | |
1387 | ||
1388 | /* Load the context into the LSB */ | |
1389 | dm_offset = CCP_SB_BYTES - des3->iv_len; | |
b5ba0835 GH |
1390 | ret = ccp_set_dm_area(&ctx, dm_offset, des3->iv, 0, |
1391 | des3->iv_len); | |
1392 | if (ret) | |
1393 | goto e_ctx; | |
990672d4 GH |
1394 | |
1395 | if (cmd_q->ccp->vdata->version == CCP_VERSION(3, 0)) | |
1396 | load_mode = CCP_PASSTHRU_BYTESWAP_NOOP; | |
1397 | else | |
1398 | load_mode = CCP_PASSTHRU_BYTESWAP_256BIT; | |
1399 | ret = ccp_copy_to_sb(cmd_q, &ctx, op.jobid, op.sb_ctx, | |
1400 | load_mode); | |
1401 | if (ret) { | |
1402 | cmd->engine_error = cmd_q->cmd_error; | |
1403 | goto e_ctx; | |
1404 | } | |
1405 | } | |
1406 | ||
1407 | /* | |
1408 | * Prepare the input and output data workareas. For in-place | |
1409 | * operations we need to set the dma direction to BIDIRECTIONAL | |
1410 | * and copy the src workarea to the dst workarea. | |
1411 | */ | |
1412 | if (sg_virt(des3->src) == sg_virt(des3->dst)) | |
1413 | in_place = true; | |
1414 | ||
1415 | ret = ccp_init_data(&src, cmd_q, des3->src, des3->src_len, | |
1416 | DES3_EDE_BLOCK_SIZE, | |
1417 | in_place ? DMA_BIDIRECTIONAL : DMA_TO_DEVICE); | |
1418 | if (ret) | |
1419 | goto e_ctx; | |
1420 | ||
1421 | if (in_place) | |
1422 | dst = src; | |
1423 | else { | |
1424 | ret = ccp_init_data(&dst, cmd_q, des3->dst, des3->src_len, | |
1425 | DES3_EDE_BLOCK_SIZE, DMA_FROM_DEVICE); | |
1426 | if (ret) | |
1427 | goto e_src; | |
1428 | } | |
1429 | ||
1430 | /* Send data to the CCP DES3 engine */ | |
1431 | while (src.sg_wa.bytes_left) { | |
1432 | ccp_prepare_data(&src, &dst, &op, DES3_EDE_BLOCK_SIZE, true); | |
1433 | if (!src.sg_wa.bytes_left) { | |
1434 | op.eom = 1; | |
1435 | ||
1436 | /* Since we don't retrieve the context in ECB mode | |
1437 | * we have to wait for the operation to complete | |
1438 | * on the last piece of data | |
1439 | */ | |
1440 | op.soc = 0; | |
1441 | } | |
1442 | ||
1443 | ret = cmd_q->ccp->vdata->perform->des3(&op); | |
1444 | if (ret) { | |
1445 | cmd->engine_error = cmd_q->cmd_error; | |
1446 | goto e_dst; | |
1447 | } | |
1448 | ||
1449 | ccp_process_data(&src, &dst, &op); | |
1450 | } | |
1451 | ||
1452 | if (des3->mode != CCP_DES3_MODE_ECB) { | |
1453 | /* Retrieve the context and make BE */ | |
1454 | ret = ccp_copy_from_sb(cmd_q, &ctx, op.jobid, op.sb_ctx, | |
1455 | CCP_PASSTHRU_BYTESWAP_256BIT); | |
1456 | if (ret) { | |
1457 | cmd->engine_error = cmd_q->cmd_error; | |
1458 | goto e_dst; | |
1459 | } | |
1460 | ||
1461 | /* ...but we only need the last DES3_EDE_BLOCK_SIZE bytes */ | |
1462 | if (cmd_q->ccp->vdata->version == CCP_VERSION(3, 0)) | |
1463 | dm_offset = CCP_SB_BYTES - des3->iv_len; | |
1464 | else | |
1465 | dm_offset = 0; | |
1466 | ccp_get_dm_area(&ctx, dm_offset, des3->iv, 0, | |
1467 | DES3_EDE_BLOCK_SIZE); | |
1468 | } | |
1469 | e_dst: | |
1470 | if (!in_place) | |
1471 | ccp_free_data(&dst, cmd_q); | |
1472 | ||
1473 | e_src: | |
1474 | ccp_free_data(&src, cmd_q); | |
1475 | ||
1476 | e_ctx: | |
1477 | if (des3->mode != CCP_DES3_MODE_ECB) | |
1478 | ccp_dm_free(&ctx); | |
1479 | ||
1480 | e_key: | |
1481 | ccp_dm_free(&key); | |
1482 | ||
1483 | return ret; | |
1484 | } | |
1485 | ||
63b94509 TL |
1486 | static int ccp_run_sha_cmd(struct ccp_cmd_queue *cmd_q, struct ccp_cmd *cmd) |
1487 | { | |
1488 | struct ccp_sha_engine *sha = &cmd->u.sha; | |
1489 | struct ccp_dm_workarea ctx; | |
1490 | struct ccp_data src; | |
1491 | struct ccp_op op; | |
4b394a23 GH |
1492 | unsigned int ioffset, ooffset; |
1493 | unsigned int digest_size; | |
1494 | int sb_count; | |
1495 | const void *init; | |
1496 | u64 block_size; | |
1497 | int ctx_size; | |
63b94509 TL |
1498 | int ret; |
1499 | ||
4b394a23 GH |
1500 | switch (sha->type) { |
1501 | case CCP_SHA_TYPE_1: | |
1502 | if (sha->ctx_len < SHA1_DIGEST_SIZE) | |
1503 | return -EINVAL; | |
1504 | block_size = SHA1_BLOCK_SIZE; | |
1505 | break; | |
1506 | case CCP_SHA_TYPE_224: | |
1507 | if (sha->ctx_len < SHA224_DIGEST_SIZE) | |
1508 | return -EINVAL; | |
1509 | block_size = SHA224_BLOCK_SIZE; | |
1510 | break; | |
1511 | case CCP_SHA_TYPE_256: | |
1512 | if (sha->ctx_len < SHA256_DIGEST_SIZE) | |
1513 | return -EINVAL; | |
1514 | block_size = SHA256_BLOCK_SIZE; | |
1515 | break; | |
ccebcf3f GH |
1516 | case CCP_SHA_TYPE_384: |
1517 | if (cmd_q->ccp->vdata->version < CCP_VERSION(4, 0) | |
1518 | || sha->ctx_len < SHA384_DIGEST_SIZE) | |
1519 | return -EINVAL; | |
1520 | block_size = SHA384_BLOCK_SIZE; | |
1521 | break; | |
1522 | case CCP_SHA_TYPE_512: | |
1523 | if (cmd_q->ccp->vdata->version < CCP_VERSION(4, 0) | |
1524 | || sha->ctx_len < SHA512_DIGEST_SIZE) | |
1525 | return -EINVAL; | |
1526 | block_size = SHA512_BLOCK_SIZE; | |
1527 | break; | |
4b394a23 | 1528 | default: |
63b94509 | 1529 | return -EINVAL; |
4b394a23 | 1530 | } |
63b94509 TL |
1531 | |
1532 | if (!sha->ctx) | |
1533 | return -EINVAL; | |
1534 | ||
4b394a23 | 1535 | if (!sha->final && (sha->src_len & (block_size - 1))) |
63b94509 TL |
1536 | return -EINVAL; |
1537 | ||
4b394a23 GH |
1538 | /* The version 3 device can't handle zero-length input */ |
1539 | if (cmd_q->ccp->vdata->version == CCP_VERSION(3, 0)) { | |
63b94509 | 1540 | |
4b394a23 GH |
1541 | if (!sha->src_len) { |
1542 | unsigned int digest_len; | |
1543 | const u8 *sha_zero; | |
63b94509 | 1544 | |
4b394a23 GH |
1545 | /* Not final, just return */ |
1546 | if (!sha->final) | |
1547 | return 0; | |
63b94509 | 1548 | |
4b394a23 GH |
1549 | /* CCP can't do a zero length sha operation so the |
1550 | * caller must buffer the data. | |
1551 | */ | |
1552 | if (sha->msg_bits) | |
1553 | return -EINVAL; | |
63b94509 | 1554 | |
4b394a23 GH |
1555 | /* The CCP cannot perform zero-length sha operations |
1556 | * so the caller is required to buffer data for the | |
1557 | * final operation. However, a sha operation for a | |
1558 | * message with a total length of zero is valid so | |
1559 | * known values are required to supply the result. | |
1560 | */ | |
1561 | switch (sha->type) { | |
1562 | case CCP_SHA_TYPE_1: | |
1563 | sha_zero = sha1_zero_message_hash; | |
1564 | digest_len = SHA1_DIGEST_SIZE; | |
1565 | break; | |
1566 | case CCP_SHA_TYPE_224: | |
1567 | sha_zero = sha224_zero_message_hash; | |
1568 | digest_len = SHA224_DIGEST_SIZE; | |
1569 | break; | |
1570 | case CCP_SHA_TYPE_256: | |
1571 | sha_zero = sha256_zero_message_hash; | |
1572 | digest_len = SHA256_DIGEST_SIZE; | |
1573 | break; | |
1574 | default: | |
1575 | return -EINVAL; | |
1576 | } | |
63b94509 | 1577 | |
4b394a23 GH |
1578 | scatterwalk_map_and_copy((void *)sha_zero, sha->ctx, 0, |
1579 | digest_len, 1); | |
1580 | ||
1581 | return 0; | |
1582 | } | |
63b94509 TL |
1583 | } |
1584 | ||
4b394a23 GH |
1585 | /* Set variables used throughout */ |
1586 | switch (sha->type) { | |
1587 | case CCP_SHA_TYPE_1: | |
1588 | digest_size = SHA1_DIGEST_SIZE; | |
1589 | init = (void *) ccp_sha1_init; | |
1590 | ctx_size = SHA1_DIGEST_SIZE; | |
1591 | sb_count = 1; | |
1592 | if (cmd_q->ccp->vdata->version != CCP_VERSION(3, 0)) | |
1593 | ooffset = ioffset = CCP_SB_BYTES - SHA1_DIGEST_SIZE; | |
1594 | else | |
1595 | ooffset = ioffset = 0; | |
1596 | break; | |
1597 | case CCP_SHA_TYPE_224: | |
1598 | digest_size = SHA224_DIGEST_SIZE; | |
1599 | init = (void *) ccp_sha224_init; | |
1600 | ctx_size = SHA256_DIGEST_SIZE; | |
1601 | sb_count = 1; | |
1602 | ioffset = 0; | |
1603 | if (cmd_q->ccp->vdata->version != CCP_VERSION(3, 0)) | |
1604 | ooffset = CCP_SB_BYTES - SHA224_DIGEST_SIZE; | |
1605 | else | |
1606 | ooffset = 0; | |
1607 | break; | |
1608 | case CCP_SHA_TYPE_256: | |
1609 | digest_size = SHA256_DIGEST_SIZE; | |
1610 | init = (void *) ccp_sha256_init; | |
1611 | ctx_size = SHA256_DIGEST_SIZE; | |
1612 | sb_count = 1; | |
1613 | ooffset = ioffset = 0; | |
1614 | break; | |
ccebcf3f GH |
1615 | case CCP_SHA_TYPE_384: |
1616 | digest_size = SHA384_DIGEST_SIZE; | |
1617 | init = (void *) ccp_sha384_init; | |
1618 | ctx_size = SHA512_DIGEST_SIZE; | |
1619 | sb_count = 2; | |
1620 | ioffset = 0; | |
1621 | ooffset = 2 * CCP_SB_BYTES - SHA384_DIGEST_SIZE; | |
1622 | break; | |
1623 | case CCP_SHA_TYPE_512: | |
1624 | digest_size = SHA512_DIGEST_SIZE; | |
1625 | init = (void *) ccp_sha512_init; | |
1626 | ctx_size = SHA512_DIGEST_SIZE; | |
1627 | sb_count = 2; | |
1628 | ooffset = ioffset = 0; | |
1629 | break; | |
4b394a23 GH |
1630 | default: |
1631 | ret = -EINVAL; | |
1632 | goto e_data; | |
1633 | } | |
63b94509 | 1634 | |
4b394a23 GH |
1635 | /* For zero-length plaintext the src pointer is ignored; |
1636 | * otherwise both parts must be valid | |
1637 | */ | |
1638 | if (sha->src_len && !sha->src) | |
1639 | return -EINVAL; | |
63b94509 TL |
1640 | |
1641 | memset(&op, 0, sizeof(op)); | |
1642 | op.cmd_q = cmd_q; | |
4b394a23 GH |
1643 | op.jobid = CCP_NEW_JOBID(cmd_q->ccp); |
1644 | op.sb_ctx = cmd_q->sb_ctx; /* Pre-allocated */ | |
63b94509 TL |
1645 | op.u.sha.type = sha->type; |
1646 | op.u.sha.msg_bits = sha->msg_bits; | |
1647 | ||
ccebcf3f GH |
1648 | /* For SHA1/224/256 the context fits in a single (32-byte) SB entry; |
1649 | * SHA384/512 require 2 adjacent SB slots, with the right half in the | |
1650 | * first slot, and the left half in the second. Each portion must then | |
1651 | * be in little endian format: use the 256-bit byte swap option. | |
1652 | */ | |
4b394a23 | 1653 | ret = ccp_init_dm_workarea(&ctx, cmd_q, sb_count * CCP_SB_BYTES, |
63b94509 TL |
1654 | DMA_BIDIRECTIONAL); |
1655 | if (ret) | |
1656 | return ret; | |
c11baa02 | 1657 | if (sha->first) { |
c11baa02 TL |
1658 | switch (sha->type) { |
1659 | case CCP_SHA_TYPE_1: | |
c11baa02 | 1660 | case CCP_SHA_TYPE_224: |
c11baa02 | 1661 | case CCP_SHA_TYPE_256: |
4b394a23 | 1662 | memcpy(ctx.address + ioffset, init, ctx_size); |
c11baa02 | 1663 | break; |
ccebcf3f GH |
1664 | case CCP_SHA_TYPE_384: |
1665 | case CCP_SHA_TYPE_512: | |
1666 | memcpy(ctx.address + ctx_size / 2, init, | |
1667 | ctx_size / 2); | |
1668 | memcpy(ctx.address, init + ctx_size / 2, | |
1669 | ctx_size / 2); | |
1670 | break; | |
c11baa02 TL |
1671 | default: |
1672 | ret = -EINVAL; | |
1673 | goto e_ctx; | |
1674 | } | |
8db88467 | 1675 | } else { |
4b394a23 | 1676 | /* Restore the context */ |
b5ba0835 GH |
1677 | ret = ccp_set_dm_area(&ctx, 0, sha->ctx, 0, |
1678 | sb_count * CCP_SB_BYTES); | |
1679 | if (ret) | |
1680 | goto e_ctx; | |
8db88467 | 1681 | } |
c11baa02 | 1682 | |
956ee21a GH |
1683 | ret = ccp_copy_to_sb(cmd_q, &ctx, op.jobid, op.sb_ctx, |
1684 | CCP_PASSTHRU_BYTESWAP_256BIT); | |
63b94509 TL |
1685 | if (ret) { |
1686 | cmd->engine_error = cmd_q->cmd_error; | |
1687 | goto e_ctx; | |
1688 | } | |
1689 | ||
4b394a23 GH |
1690 | if (sha->src) { |
1691 | /* Send data to the CCP SHA engine; block_size is set above */ | |
1692 | ret = ccp_init_data(&src, cmd_q, sha->src, sha->src_len, | |
1693 | block_size, DMA_TO_DEVICE); | |
1694 | if (ret) | |
1695 | goto e_ctx; | |
63b94509 | 1696 | |
4b394a23 GH |
1697 | while (src.sg_wa.bytes_left) { |
1698 | ccp_prepare_data(&src, NULL, &op, block_size, false); | |
1699 | if (sha->final && !src.sg_wa.bytes_left) | |
1700 | op.eom = 1; | |
1701 | ||
1702 | ret = cmd_q->ccp->vdata->perform->sha(&op); | |
1703 | if (ret) { | |
1704 | cmd->engine_error = cmd_q->cmd_error; | |
1705 | goto e_data; | |
1706 | } | |
63b94509 | 1707 | |
4b394a23 GH |
1708 | ccp_process_data(&src, NULL, &op); |
1709 | } | |
1710 | } else { | |
1711 | op.eom = 1; | |
a43eb985 | 1712 | ret = cmd_q->ccp->vdata->perform->sha(&op); |
63b94509 TL |
1713 | if (ret) { |
1714 | cmd->engine_error = cmd_q->cmd_error; | |
1715 | goto e_data; | |
1716 | } | |
63b94509 TL |
1717 | } |
1718 | ||
1719 | /* Retrieve the SHA context - convert from LE to BE using | |
1720 | * 32-byte (256-bit) byteswapping to BE | |
1721 | */ | |
956ee21a GH |
1722 | ret = ccp_copy_from_sb(cmd_q, &ctx, op.jobid, op.sb_ctx, |
1723 | CCP_PASSTHRU_BYTESWAP_256BIT); | |
63b94509 TL |
1724 | if (ret) { |
1725 | cmd->engine_error = cmd_q->cmd_error; | |
1726 | goto e_data; | |
1727 | } | |
1728 | ||
4b394a23 GH |
1729 | if (sha->final) { |
1730 | /* Finishing up, so get the digest */ | |
c11baa02 TL |
1731 | switch (sha->type) { |
1732 | case CCP_SHA_TYPE_1: | |
c11baa02 | 1733 | case CCP_SHA_TYPE_224: |
c11baa02 | 1734 | case CCP_SHA_TYPE_256: |
4b394a23 GH |
1735 | ccp_get_dm_area(&ctx, ooffset, |
1736 | sha->ctx, 0, | |
1737 | digest_size); | |
c11baa02 | 1738 | break; |
ccebcf3f GH |
1739 | case CCP_SHA_TYPE_384: |
1740 | case CCP_SHA_TYPE_512: | |
1741 | ccp_get_dm_area(&ctx, 0, | |
1742 | sha->ctx, LSB_ITEM_SIZE - ooffset, | |
1743 | LSB_ITEM_SIZE); | |
1744 | ccp_get_dm_area(&ctx, LSB_ITEM_SIZE + ooffset, | |
1745 | sha->ctx, 0, | |
1746 | LSB_ITEM_SIZE - ooffset); | |
1747 | break; | |
c11baa02 TL |
1748 | default: |
1749 | ret = -EINVAL; | |
4b394a23 | 1750 | goto e_ctx; |
c11baa02 | 1751 | } |
4b394a23 GH |
1752 | } else { |
1753 | /* Stash the context */ | |
1754 | ccp_get_dm_area(&ctx, 0, sha->ctx, 0, | |
1755 | sb_count * CCP_SB_BYTES); | |
1756 | } | |
1757 | ||
1758 | if (sha->final && sha->opad) { | |
1759 | /* HMAC operation, recursively perform final SHA */ | |
1760 | struct ccp_cmd hmac_cmd; | |
1761 | struct scatterlist sg; | |
1762 | u8 *hmac_buf; | |
c11baa02 TL |
1763 | |
1764 | if (sha->opad_len != block_size) { | |
1765 | ret = -EINVAL; | |
1766 | goto e_data; | |
1767 | } | |
1768 | ||
1769 | hmac_buf = kmalloc(block_size + digest_size, GFP_KERNEL); | |
1770 | if (!hmac_buf) { | |
1771 | ret = -ENOMEM; | |
1772 | goto e_data; | |
1773 | } | |
1774 | sg_init_one(&sg, hmac_buf, block_size + digest_size); | |
1775 | ||
1776 | scatterwalk_map_and_copy(hmac_buf, sha->opad, 0, block_size, 0); | |
4b394a23 GH |
1777 | switch (sha->type) { |
1778 | case CCP_SHA_TYPE_1: | |
1779 | case CCP_SHA_TYPE_224: | |
1780 | case CCP_SHA_TYPE_256: | |
1781 | memcpy(hmac_buf + block_size, | |
1782 | ctx.address + ooffset, | |
1783 | digest_size); | |
1784 | break; | |
ccebcf3f GH |
1785 | case CCP_SHA_TYPE_384: |
1786 | case CCP_SHA_TYPE_512: | |
1787 | memcpy(hmac_buf + block_size, | |
1788 | ctx.address + LSB_ITEM_SIZE + ooffset, | |
1789 | LSB_ITEM_SIZE); | |
1790 | memcpy(hmac_buf + block_size + | |
1791 | (LSB_ITEM_SIZE - ooffset), | |
1792 | ctx.address, | |
1793 | LSB_ITEM_SIZE); | |
1794 | break; | |
4b394a23 GH |
1795 | default: |
1796 | ret = -EINVAL; | |
1797 | goto e_ctx; | |
1798 | } | |
c11baa02 TL |
1799 | |
1800 | memset(&hmac_cmd, 0, sizeof(hmac_cmd)); | |
1801 | hmac_cmd.engine = CCP_ENGINE_SHA; | |
1802 | hmac_cmd.u.sha.type = sha->type; | |
1803 | hmac_cmd.u.sha.ctx = sha->ctx; | |
1804 | hmac_cmd.u.sha.ctx_len = sha->ctx_len; | |
1805 | hmac_cmd.u.sha.src = &sg; | |
1806 | hmac_cmd.u.sha.src_len = block_size + digest_size; | |
1807 | hmac_cmd.u.sha.opad = NULL; | |
1808 | hmac_cmd.u.sha.opad_len = 0; | |
1809 | hmac_cmd.u.sha.first = 1; | |
1810 | hmac_cmd.u.sha.final = 1; | |
1811 | hmac_cmd.u.sha.msg_bits = (block_size + digest_size) << 3; | |
1812 | ||
1813 | ret = ccp_run_sha_cmd(cmd_q, &hmac_cmd); | |
1814 | if (ret) | |
1815 | cmd->engine_error = hmac_cmd.engine_error; | |
1816 | ||
1817 | kfree(hmac_buf); | |
1818 | } | |
1819 | ||
63b94509 | 1820 | e_data: |
4b394a23 GH |
1821 | if (sha->src) |
1822 | ccp_free_data(&src, cmd_q); | |
63b94509 TL |
1823 | |
1824 | e_ctx: | |
1825 | ccp_dm_free(&ctx); | |
1826 | ||
1827 | return ret; | |
1828 | } | |
1829 | ||
1830 | static int ccp_run_rsa_cmd(struct ccp_cmd_queue *cmd_q, struct ccp_cmd *cmd) | |
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 | ||
1961 | static int ccp_run_passthru_cmd(struct ccp_cmd_queue *cmd_q, | |
1962 | struct ccp_cmd *cmd) | |
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 | ||
b5ba0835 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 || | |
2045 | (dst.sg_wa.sg->length < src.sg_wa.sg->length)) { | |
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 | ||
2071 | dst.sg_wa.sg_used += src.sg_wa.sg->length; | |
2072 | if (dst.sg_wa.sg_used == dst.sg_wa.sg->length) { | |
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 | ||
58ea8abf GH |
2093 | static int ccp_run_passthru_nomap_cmd(struct ccp_cmd_queue *cmd_q, |
2094 | struct ccp_cmd *cmd) | |
2095 | { | |
2096 | struct ccp_passthru_nomap_engine *pt = &cmd->u.passthru_nomap; | |
2097 | struct ccp_dm_workarea mask; | |
2098 | struct ccp_op op; | |
2099 | int ret; | |
2100 | ||
2101 | if (!pt->final && (pt->src_len & (CCP_PASSTHRU_BLOCKSIZE - 1))) | |
2102 | return -EINVAL; | |
2103 | ||
2104 | if (!pt->src_dma || !pt->dst_dma) | |
2105 | return -EINVAL; | |
2106 | ||
2107 | if (pt->bit_mod != CCP_PASSTHRU_BITWISE_NOOP) { | |
2108 | if (pt->mask_len != CCP_PASSTHRU_MASKSIZE) | |
2109 | return -EINVAL; | |
2110 | if (!pt->mask) | |
2111 | return -EINVAL; | |
2112 | } | |
2113 | ||
956ee21a | 2114 | BUILD_BUG_ON(CCP_PASSTHRU_SB_COUNT != 1); |
58ea8abf GH |
2115 | |
2116 | memset(&op, 0, sizeof(op)); | |
2117 | op.cmd_q = cmd_q; | |
bce386af | 2118 | op.jobid = CCP_NEW_JOBID(cmd_q->ccp); |
58ea8abf GH |
2119 | |
2120 | if (pt->bit_mod != CCP_PASSTHRU_BITWISE_NOOP) { | |
2121 | /* Load the mask */ | |
956ee21a | 2122 | op.sb_key = cmd_q->sb_key; |
58ea8abf GH |
2123 | |
2124 | mask.length = pt->mask_len; | |
2125 | mask.dma.address = pt->mask; | |
2126 | mask.dma.length = pt->mask_len; | |
2127 | ||
956ee21a | 2128 | ret = ccp_copy_to_sb(cmd_q, &mask, op.jobid, op.sb_key, |
58ea8abf GH |
2129 | CCP_PASSTHRU_BYTESWAP_NOOP); |
2130 | if (ret) { | |
2131 | cmd->engine_error = cmd_q->cmd_error; | |
2132 | return ret; | |
2133 | } | |
2134 | } | |
2135 | ||
2136 | /* Send data to the CCP Passthru engine */ | |
2137 | op.eom = 1; | |
2138 | op.soc = 1; | |
2139 | ||
2140 | op.src.type = CCP_MEMTYPE_SYSTEM; | |
2141 | op.src.u.dma.address = pt->src_dma; | |
2142 | op.src.u.dma.offset = 0; | |
2143 | op.src.u.dma.length = pt->src_len; | |
2144 | ||
2145 | op.dst.type = CCP_MEMTYPE_SYSTEM; | |
2146 | op.dst.u.dma.address = pt->dst_dma; | |
2147 | op.dst.u.dma.offset = 0; | |
2148 | op.dst.u.dma.length = pt->src_len; | |
2149 | ||
a43eb985 | 2150 | ret = cmd_q->ccp->vdata->perform->passthru(&op); |
58ea8abf GH |
2151 | if (ret) |
2152 | cmd->engine_error = cmd_q->cmd_error; | |
2153 | ||
2154 | return ret; | |
2155 | } | |
2156 | ||
63b94509 TL |
2157 | static int ccp_run_ecc_mm_cmd(struct ccp_cmd_queue *cmd_q, struct ccp_cmd *cmd) |
2158 | { | |
2159 | struct ccp_ecc_engine *ecc = &cmd->u.ecc; | |
2160 | struct ccp_dm_workarea src, dst; | |
2161 | struct ccp_op op; | |
2162 | int ret; | |
2163 | u8 *save; | |
2164 | ||
2165 | if (!ecc->u.mm.operand_1 || | |
2166 | (ecc->u.mm.operand_1_len > CCP_ECC_MODULUS_BYTES)) | |
2167 | return -EINVAL; | |
2168 | ||
2169 | if (ecc->function != CCP_ECC_FUNCTION_MINV_384BIT) | |
2170 | if (!ecc->u.mm.operand_2 || | |
2171 | (ecc->u.mm.operand_2_len > CCP_ECC_MODULUS_BYTES)) | |
2172 | return -EINVAL; | |
2173 | ||
2174 | if (!ecc->u.mm.result || | |
2175 | (ecc->u.mm.result_len < CCP_ECC_MODULUS_BYTES)) | |
2176 | return -EINVAL; | |
2177 | ||
2178 | memset(&op, 0, sizeof(op)); | |
2179 | op.cmd_q = cmd_q; | |
4b394a23 | 2180 | op.jobid = CCP_NEW_JOBID(cmd_q->ccp); |
63b94509 TL |
2181 | |
2182 | /* Concatenate the modulus and the operands. Both the modulus and | |
2183 | * the operands must be in little endian format. Since the input | |
2184 | * is in big endian format it must be converted and placed in a | |
2185 | * fixed length buffer. | |
2186 | */ | |
2187 | ret = ccp_init_dm_workarea(&src, cmd_q, CCP_ECC_SRC_BUF_SIZE, | |
2188 | DMA_TO_DEVICE); | |
2189 | if (ret) | |
2190 | return ret; | |
2191 | ||
2192 | /* Save the workarea address since it is updated in order to perform | |
2193 | * the concatenation | |
2194 | */ | |
2195 | save = src.address; | |
2196 | ||
2197 | /* Copy the ECC modulus */ | |
83d650ab | 2198 | ret = ccp_reverse_set_dm_area(&src, 0, ecc->mod, 0, ecc->mod_len); |
355eba5d TL |
2199 | if (ret) |
2200 | goto e_src; | |
63b94509 TL |
2201 | src.address += CCP_ECC_OPERAND_SIZE; |
2202 | ||
2203 | /* Copy the first operand */ | |
83d650ab GH |
2204 | ret = ccp_reverse_set_dm_area(&src, 0, ecc->u.mm.operand_1, 0, |
2205 | ecc->u.mm.operand_1_len); | |
355eba5d TL |
2206 | if (ret) |
2207 | goto e_src; | |
63b94509 TL |
2208 | src.address += CCP_ECC_OPERAND_SIZE; |
2209 | ||
2210 | if (ecc->function != CCP_ECC_FUNCTION_MINV_384BIT) { | |
2211 | /* Copy the second operand */ | |
83d650ab GH |
2212 | ret = ccp_reverse_set_dm_area(&src, 0, ecc->u.mm.operand_2, 0, |
2213 | ecc->u.mm.operand_2_len); | |
355eba5d TL |
2214 | if (ret) |
2215 | goto e_src; | |
63b94509 TL |
2216 | src.address += CCP_ECC_OPERAND_SIZE; |
2217 | } | |
2218 | ||
2219 | /* Restore the workarea address */ | |
2220 | src.address = save; | |
2221 | ||
2222 | /* Prepare the output area for the operation */ | |
2223 | ret = ccp_init_dm_workarea(&dst, cmd_q, CCP_ECC_DST_BUF_SIZE, | |
2224 | DMA_FROM_DEVICE); | |
2225 | if (ret) | |
2226 | goto e_src; | |
2227 | ||
2228 | op.soc = 1; | |
2229 | op.src.u.dma.address = src.dma.address; | |
2230 | op.src.u.dma.offset = 0; | |
2231 | op.src.u.dma.length = src.length; | |
2232 | op.dst.u.dma.address = dst.dma.address; | |
2233 | op.dst.u.dma.offset = 0; | |
2234 | op.dst.u.dma.length = dst.length; | |
2235 | ||
2236 | op.u.ecc.function = cmd->u.ecc.function; | |
2237 | ||
a43eb985 | 2238 | ret = cmd_q->ccp->vdata->perform->ecc(&op); |
63b94509 TL |
2239 | if (ret) { |
2240 | cmd->engine_error = cmd_q->cmd_error; | |
2241 | goto e_dst; | |
2242 | } | |
2243 | ||
2244 | ecc->ecc_result = le16_to_cpup( | |
2245 | (const __le16 *)(dst.address + CCP_ECC_RESULT_OFFSET)); | |
2246 | if (!(ecc->ecc_result & CCP_ECC_RESULT_SUCCESS)) { | |
2247 | ret = -EIO; | |
2248 | goto e_dst; | |
2249 | } | |
2250 | ||
2251 | /* Save the ECC result */ | |
83d650ab GH |
2252 | ccp_reverse_get_dm_area(&dst, 0, ecc->u.mm.result, 0, |
2253 | CCP_ECC_MODULUS_BYTES); | |
63b94509 TL |
2254 | |
2255 | e_dst: | |
2256 | ccp_dm_free(&dst); | |
2257 | ||
2258 | e_src: | |
2259 | ccp_dm_free(&src); | |
2260 | ||
2261 | return ret; | |
2262 | } | |
2263 | ||
2264 | static int ccp_run_ecc_pm_cmd(struct ccp_cmd_queue *cmd_q, struct ccp_cmd *cmd) | |
2265 | { | |
2266 | struct ccp_ecc_engine *ecc = &cmd->u.ecc; | |
2267 | struct ccp_dm_workarea src, dst; | |
2268 | struct ccp_op op; | |
2269 | int ret; | |
2270 | u8 *save; | |
2271 | ||
2272 | if (!ecc->u.pm.point_1.x || | |
2273 | (ecc->u.pm.point_1.x_len > CCP_ECC_MODULUS_BYTES) || | |
2274 | !ecc->u.pm.point_1.y || | |
2275 | (ecc->u.pm.point_1.y_len > CCP_ECC_MODULUS_BYTES)) | |
2276 | return -EINVAL; | |
2277 | ||
2278 | if (ecc->function == CCP_ECC_FUNCTION_PADD_384BIT) { | |
2279 | if (!ecc->u.pm.point_2.x || | |
2280 | (ecc->u.pm.point_2.x_len > CCP_ECC_MODULUS_BYTES) || | |
2281 | !ecc->u.pm.point_2.y || | |
2282 | (ecc->u.pm.point_2.y_len > CCP_ECC_MODULUS_BYTES)) | |
2283 | return -EINVAL; | |
2284 | } else { | |
2285 | if (!ecc->u.pm.domain_a || | |
2286 | (ecc->u.pm.domain_a_len > CCP_ECC_MODULUS_BYTES)) | |
2287 | return -EINVAL; | |
2288 | ||
2289 | if (ecc->function == CCP_ECC_FUNCTION_PMUL_384BIT) | |
2290 | if (!ecc->u.pm.scalar || | |
2291 | (ecc->u.pm.scalar_len > CCP_ECC_MODULUS_BYTES)) | |
2292 | return -EINVAL; | |
2293 | } | |
2294 | ||
2295 | if (!ecc->u.pm.result.x || | |
2296 | (ecc->u.pm.result.x_len < CCP_ECC_MODULUS_BYTES) || | |
2297 | !ecc->u.pm.result.y || | |
2298 | (ecc->u.pm.result.y_len < CCP_ECC_MODULUS_BYTES)) | |
2299 | return -EINVAL; | |
2300 | ||
2301 | memset(&op, 0, sizeof(op)); | |
2302 | op.cmd_q = cmd_q; | |
4b394a23 | 2303 | op.jobid = CCP_NEW_JOBID(cmd_q->ccp); |
63b94509 TL |
2304 | |
2305 | /* Concatenate the modulus and the operands. Both the modulus and | |
2306 | * the operands must be in little endian format. Since the input | |
2307 | * is in big endian format it must be converted and placed in a | |
2308 | * fixed length buffer. | |
2309 | */ | |
2310 | ret = ccp_init_dm_workarea(&src, cmd_q, CCP_ECC_SRC_BUF_SIZE, | |
2311 | DMA_TO_DEVICE); | |
2312 | if (ret) | |
2313 | return ret; | |
2314 | ||
2315 | /* Save the workarea address since it is updated in order to perform | |
2316 | * the concatenation | |
2317 | */ | |
2318 | save = src.address; | |
2319 | ||
2320 | /* Copy the ECC modulus */ | |
83d650ab | 2321 | ret = ccp_reverse_set_dm_area(&src, 0, ecc->mod, 0, ecc->mod_len); |
355eba5d TL |
2322 | if (ret) |
2323 | goto e_src; | |
63b94509 TL |
2324 | src.address += CCP_ECC_OPERAND_SIZE; |
2325 | ||
2326 | /* Copy the first point X and Y coordinate */ | |
83d650ab GH |
2327 | ret = ccp_reverse_set_dm_area(&src, 0, ecc->u.pm.point_1.x, 0, |
2328 | ecc->u.pm.point_1.x_len); | |
355eba5d TL |
2329 | if (ret) |
2330 | goto e_src; | |
63b94509 | 2331 | src.address += CCP_ECC_OPERAND_SIZE; |
83d650ab GH |
2332 | ret = ccp_reverse_set_dm_area(&src, 0, ecc->u.pm.point_1.y, 0, |
2333 | ecc->u.pm.point_1.y_len); | |
355eba5d TL |
2334 | if (ret) |
2335 | goto e_src; | |
63b94509 TL |
2336 | src.address += CCP_ECC_OPERAND_SIZE; |
2337 | ||
4b394a23 | 2338 | /* Set the first point Z coordinate to 1 */ |
8db88467 | 2339 | *src.address = 0x01; |
63b94509 TL |
2340 | src.address += CCP_ECC_OPERAND_SIZE; |
2341 | ||
2342 | if (ecc->function == CCP_ECC_FUNCTION_PADD_384BIT) { | |
2343 | /* Copy the second point X and Y coordinate */ | |
83d650ab GH |
2344 | ret = ccp_reverse_set_dm_area(&src, 0, ecc->u.pm.point_2.x, 0, |
2345 | ecc->u.pm.point_2.x_len); | |
355eba5d TL |
2346 | if (ret) |
2347 | goto e_src; | |
63b94509 | 2348 | src.address += CCP_ECC_OPERAND_SIZE; |
83d650ab GH |
2349 | ret = ccp_reverse_set_dm_area(&src, 0, ecc->u.pm.point_2.y, 0, |
2350 | ecc->u.pm.point_2.y_len); | |
355eba5d TL |
2351 | if (ret) |
2352 | goto e_src; | |
63b94509 TL |
2353 | src.address += CCP_ECC_OPERAND_SIZE; |
2354 | ||
4b394a23 | 2355 | /* Set the second point Z coordinate to 1 */ |
8db88467 | 2356 | *src.address = 0x01; |
63b94509 TL |
2357 | src.address += CCP_ECC_OPERAND_SIZE; |
2358 | } else { | |
2359 | /* Copy the Domain "a" parameter */ | |
83d650ab GH |
2360 | ret = ccp_reverse_set_dm_area(&src, 0, ecc->u.pm.domain_a, 0, |
2361 | ecc->u.pm.domain_a_len); | |
355eba5d TL |
2362 | if (ret) |
2363 | goto e_src; | |
63b94509 TL |
2364 | src.address += CCP_ECC_OPERAND_SIZE; |
2365 | ||
2366 | if (ecc->function == CCP_ECC_FUNCTION_PMUL_384BIT) { | |
2367 | /* Copy the scalar value */ | |
83d650ab GH |
2368 | ret = ccp_reverse_set_dm_area(&src, 0, |
2369 | ecc->u.pm.scalar, 0, | |
2370 | ecc->u.pm.scalar_len); | |
355eba5d TL |
2371 | if (ret) |
2372 | goto e_src; | |
63b94509 TL |
2373 | src.address += CCP_ECC_OPERAND_SIZE; |
2374 | } | |
2375 | } | |
2376 | ||
2377 | /* Restore the workarea address */ | |
2378 | src.address = save; | |
2379 | ||
2380 | /* Prepare the output area for the operation */ | |
2381 | ret = ccp_init_dm_workarea(&dst, cmd_q, CCP_ECC_DST_BUF_SIZE, | |
2382 | DMA_FROM_DEVICE); | |
2383 | if (ret) | |
2384 | goto e_src; | |
2385 | ||
2386 | op.soc = 1; | |
2387 | op.src.u.dma.address = src.dma.address; | |
2388 | op.src.u.dma.offset = 0; | |
2389 | op.src.u.dma.length = src.length; | |
2390 | op.dst.u.dma.address = dst.dma.address; | |
2391 | op.dst.u.dma.offset = 0; | |
2392 | op.dst.u.dma.length = dst.length; | |
2393 | ||
2394 | op.u.ecc.function = cmd->u.ecc.function; | |
2395 | ||
a43eb985 | 2396 | ret = cmd_q->ccp->vdata->perform->ecc(&op); |
63b94509 TL |
2397 | if (ret) { |
2398 | cmd->engine_error = cmd_q->cmd_error; | |
2399 | goto e_dst; | |
2400 | } | |
2401 | ||
2402 | ecc->ecc_result = le16_to_cpup( | |
2403 | (const __le16 *)(dst.address + CCP_ECC_RESULT_OFFSET)); | |
2404 | if (!(ecc->ecc_result & CCP_ECC_RESULT_SUCCESS)) { | |
2405 | ret = -EIO; | |
2406 | goto e_dst; | |
2407 | } | |
2408 | ||
2409 | /* Save the workarea address since it is updated as we walk through | |
2410 | * to copy the point math result | |
2411 | */ | |
2412 | save = dst.address; | |
2413 | ||
2414 | /* Save the ECC result X and Y coordinates */ | |
83d650ab | 2415 | ccp_reverse_get_dm_area(&dst, 0, ecc->u.pm.result.x, 0, |
63b94509 TL |
2416 | CCP_ECC_MODULUS_BYTES); |
2417 | dst.address += CCP_ECC_OUTPUT_SIZE; | |
83d650ab | 2418 | ccp_reverse_get_dm_area(&dst, 0, ecc->u.pm.result.y, 0, |
63b94509 TL |
2419 | CCP_ECC_MODULUS_BYTES); |
2420 | dst.address += CCP_ECC_OUTPUT_SIZE; | |
2421 | ||
2422 | /* Restore the workarea address */ | |
2423 | dst.address = save; | |
2424 | ||
2425 | e_dst: | |
2426 | ccp_dm_free(&dst); | |
2427 | ||
2428 | e_src: | |
2429 | ccp_dm_free(&src); | |
2430 | ||
2431 | return ret; | |
2432 | } | |
2433 | ||
2434 | static int ccp_run_ecc_cmd(struct ccp_cmd_queue *cmd_q, struct ccp_cmd *cmd) | |
2435 | { | |
2436 | struct ccp_ecc_engine *ecc = &cmd->u.ecc; | |
2437 | ||
2438 | ecc->ecc_result = 0; | |
2439 | ||
2440 | if (!ecc->mod || | |
2441 | (ecc->mod_len > CCP_ECC_MODULUS_BYTES)) | |
2442 | return -EINVAL; | |
2443 | ||
2444 | switch (ecc->function) { | |
2445 | case CCP_ECC_FUNCTION_MMUL_384BIT: | |
2446 | case CCP_ECC_FUNCTION_MADD_384BIT: | |
2447 | case CCP_ECC_FUNCTION_MINV_384BIT: | |
2448 | return ccp_run_ecc_mm_cmd(cmd_q, cmd); | |
2449 | ||
2450 | case CCP_ECC_FUNCTION_PADD_384BIT: | |
2451 | case CCP_ECC_FUNCTION_PMUL_384BIT: | |
2452 | case CCP_ECC_FUNCTION_PDBL_384BIT: | |
2453 | return ccp_run_ecc_pm_cmd(cmd_q, cmd); | |
2454 | ||
2455 | default: | |
2456 | return -EINVAL; | |
2457 | } | |
2458 | } | |
2459 | ||
2460 | int ccp_run_cmd(struct ccp_cmd_queue *cmd_q, struct ccp_cmd *cmd) | |
2461 | { | |
2462 | int ret; | |
2463 | ||
2464 | cmd->engine_error = 0; | |
2465 | cmd_q->cmd_error = 0; | |
2466 | cmd_q->int_rcvd = 0; | |
bb4e89b3 | 2467 | cmd_q->free_slots = cmd_q->ccp->vdata->perform->get_free_slots(cmd_q); |
63b94509 TL |
2468 | |
2469 | switch (cmd->engine) { | |
2470 | case CCP_ENGINE_AES: | |
2471 | ret = ccp_run_aes_cmd(cmd_q, cmd); | |
2472 | break; | |
2473 | case CCP_ENGINE_XTS_AES_128: | |
2474 | ret = ccp_run_xts_aes_cmd(cmd_q, cmd); | |
2475 | break; | |
990672d4 GH |
2476 | case CCP_ENGINE_DES3: |
2477 | ret = ccp_run_des3_cmd(cmd_q, cmd); | |
2478 | break; | |
63b94509 TL |
2479 | case CCP_ENGINE_SHA: |
2480 | ret = ccp_run_sha_cmd(cmd_q, cmd); | |
2481 | break; | |
2482 | case CCP_ENGINE_RSA: | |
2483 | ret = ccp_run_rsa_cmd(cmd_q, cmd); | |
2484 | break; | |
2485 | case CCP_ENGINE_PASSTHRU: | |
58ea8abf GH |
2486 | if (cmd->flags & CCP_CMD_PASSTHRU_NO_DMA_MAP) |
2487 | ret = ccp_run_passthru_nomap_cmd(cmd_q, cmd); | |
2488 | else | |
2489 | ret = ccp_run_passthru_cmd(cmd_q, cmd); | |
63b94509 TL |
2490 | break; |
2491 | case CCP_ENGINE_ECC: | |
2492 | ret = ccp_run_ecc_cmd(cmd_q, cmd); | |
2493 | break; | |
2494 | default: | |
2495 | ret = -EINVAL; | |
2496 | } | |
2497 | ||
2498 | return ret; | |
2499 | } |