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Merge tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost
[cris-mirror.git] / drivers / crypto / caam / caamalg_desc.c
blobceb93fbb76e63df8d3d9556054cbe200dd540cec
1 /*
2 * Shared descriptors for aead, ablkcipher algorithms
3 *
4 * Copyright 2016 NXP
5 */
6
7 #include "compat.h"
8 #include "desc_constr.h"
9 #include "caamalg_desc.h"
10
11 /*
12 * For aead functions, read payload and write payload,
13 * both of which are specified in req->src and req->dst
14 */
15 static inline void aead_append_src_dst(u32 *desc, u32 msg_type)
16 {
17 append_seq_fifo_store(desc, 0, FIFOST_TYPE_MESSAGE_DATA | KEY_VLF);
18 append_seq_fifo_load(desc, 0, FIFOLD_CLASS_BOTH |
19 KEY_VLF | msg_type | FIFOLD_TYPE_LASTBOTH);
20 }
21
22 /* Set DK bit in class 1 operation if shared */
23 static inline void append_dec_op1(u32 *desc, u32 type)
24 {
25 u32 *jump_cmd, *uncond_jump_cmd;
26
27 /* DK bit is valid only for AES */
28 if ((type & OP_ALG_ALGSEL_MASK) != OP_ALG_ALGSEL_AES) {
29 append_operation(desc, type | OP_ALG_AS_INITFINAL |
30 OP_ALG_DECRYPT);
31 return;
32 }
33
34 jump_cmd = append_jump(desc, JUMP_TEST_ALL | JUMP_COND_SHRD);
35 append_operation(desc, type | OP_ALG_AS_INITFINAL |
36 OP_ALG_DECRYPT);
37 uncond_jump_cmd = append_jump(desc, JUMP_TEST_ALL);
38 set_jump_tgt_here(desc, jump_cmd);
39 append_operation(desc, type | OP_ALG_AS_INITFINAL |
40 OP_ALG_DECRYPT | OP_ALG_AAI_DK);
41 set_jump_tgt_here(desc, uncond_jump_cmd);
42 }
43
44 /**
45 * cnstr_shdsc_aead_null_encap - IPSec ESP encapsulation shared descriptor
46 * (non-protocol) with no (null) encryption.
47 * @desc: pointer to buffer used for descriptor construction
48 * @adata: pointer to authentication transform definitions.
49 * A split key is required for SEC Era < 6; the size of the split key
50 * is specified in this case. Valid algorithm values - one of
51 * OP_ALG_ALGSEL_{MD5, SHA1, SHA224, SHA256, SHA384, SHA512} ANDed
52 * with OP_ALG_AAI_HMAC_PRECOMP.
53 * @icvsize: integrity check value (ICV) size (truncated or full)
54 * @era: SEC Era
55 */
56 void cnstr_shdsc_aead_null_encap(u32 * const desc, struct alginfo *adata,
57 unsigned int icvsize, int era)
58 {
59 u32 *key_jump_cmd, *read_move_cmd, *write_move_cmd;
60
61 init_sh_desc(desc, HDR_SHARE_SERIAL);
62
63 /* Skip if already shared */
64 key_jump_cmd = append_jump(desc, JUMP_JSL | JUMP_TEST_ALL |
65 JUMP_COND_SHRD);
66 if (era < 6) {
67 if (adata->key_inline)
68 append_key_as_imm(desc, adata->key_virt,
69 adata->keylen_pad, adata->keylen,
70 CLASS_2 | KEY_DEST_MDHA_SPLIT |
71 KEY_ENC);
72 else
73 append_key(desc, adata->key_dma, adata->keylen,
74 CLASS_2 | KEY_DEST_MDHA_SPLIT | KEY_ENC);
75 } else {
76 append_proto_dkp(desc, adata);
77 }
78 set_jump_tgt_here(desc, key_jump_cmd);
79
80 /* assoclen + cryptlen = seqinlen */
81 append_math_sub(desc, REG3, SEQINLEN, REG0, CAAM_CMD_SZ);
82
83 /* Prepare to read and write cryptlen + assoclen bytes */
84 append_math_add(desc, VARSEQINLEN, ZERO, REG3, CAAM_CMD_SZ);
85 append_math_add(desc, VARSEQOUTLEN, ZERO, REG3, CAAM_CMD_SZ);
86
87 /*
88 * MOVE_LEN opcode is not available in all SEC HW revisions,
89 * thus need to do some magic, i.e. self-patch the descriptor
90 * buffer.
91 */
92 read_move_cmd = append_move(desc, MOVE_SRC_DESCBUF |
93 MOVE_DEST_MATH3 |
94 (0x6 << MOVE_LEN_SHIFT));
95 write_move_cmd = append_move(desc, MOVE_SRC_MATH3 |
96 MOVE_DEST_DESCBUF |
97 MOVE_WAITCOMP |
98 (0x8 << MOVE_LEN_SHIFT));
99
100 /* Class 2 operation */
101 append_operation(desc, adata->algtype | OP_ALG_AS_INITFINAL |
102 OP_ALG_ENCRYPT);
103
104 /* Read and write cryptlen bytes */
105 aead_append_src_dst(desc, FIFOLD_TYPE_MSG | FIFOLD_TYPE_FLUSH1);
106
107 set_move_tgt_here(desc, read_move_cmd);
108 set_move_tgt_here(desc, write_move_cmd);
109 append_cmd(desc, CMD_LOAD | DISABLE_AUTO_INFO_FIFO);
110 append_move(desc, MOVE_SRC_INFIFO_CL | MOVE_DEST_OUTFIFO |
111 MOVE_AUX_LS);
112
113 /* Write ICV */
114 append_seq_store(desc, icvsize, LDST_CLASS_2_CCB |
115 LDST_SRCDST_BYTE_CONTEXT);
116
117 #ifdef DEBUG
118 print_hex_dump(KERN_ERR,
119 "aead null enc shdesc@" __stringify(__LINE__)": ",
120 DUMP_PREFIX_ADDRESS, 16, 4, desc, desc_bytes(desc), 1);
121 #endif
122 }
123 EXPORT_SYMBOL(cnstr_shdsc_aead_null_encap);
124
125 /**
126 * cnstr_shdsc_aead_null_decap - IPSec ESP decapsulation shared descriptor
127 * (non-protocol) with no (null) decryption.
128 * @desc: pointer to buffer used for descriptor construction
129 * @adata: pointer to authentication transform definitions.
130 * A split key is required for SEC Era < 6; the size of the split key
131 * is specified in this case. Valid algorithm values - one of
132 * OP_ALG_ALGSEL_{MD5, SHA1, SHA224, SHA256, SHA384, SHA512} ANDed
133 * with OP_ALG_AAI_HMAC_PRECOMP.
134 * @icvsize: integrity check value (ICV) size (truncated or full)
135 * @era: SEC Era
136 */
137 void cnstr_shdsc_aead_null_decap(u32 * const desc, struct alginfo *adata,
138 unsigned int icvsize, int era)
139 {
140 u32 *key_jump_cmd, *read_move_cmd, *write_move_cmd, *jump_cmd;
141
142 init_sh_desc(desc, HDR_SHARE_SERIAL);
143
144 /* Skip if already shared */
145 key_jump_cmd = append_jump(desc, JUMP_JSL | JUMP_TEST_ALL |
146 JUMP_COND_SHRD);
147 if (era < 6) {
148 if (adata->key_inline)
149 append_key_as_imm(desc, adata->key_virt,
150 adata->keylen_pad, adata->keylen,
151 CLASS_2 | KEY_DEST_MDHA_SPLIT |
152 KEY_ENC);
153 else
154 append_key(desc, adata->key_dma, adata->keylen,
155 CLASS_2 | KEY_DEST_MDHA_SPLIT | KEY_ENC);
156 } else {
157 append_proto_dkp(desc, adata);
158 }
159 set_jump_tgt_here(desc, key_jump_cmd);
160
161 /* Class 2 operation */
162 append_operation(desc, adata->algtype | OP_ALG_AS_INITFINAL |
163 OP_ALG_DECRYPT | OP_ALG_ICV_ON);
164
165 /* assoclen + cryptlen = seqoutlen */
166 append_math_sub(desc, REG2, SEQOUTLEN, REG0, CAAM_CMD_SZ);
167
168 /* Prepare to read and write cryptlen + assoclen bytes */
169 append_math_add(desc, VARSEQINLEN, ZERO, REG2, CAAM_CMD_SZ);
170 append_math_add(desc, VARSEQOUTLEN, ZERO, REG2, CAAM_CMD_SZ);
171
172 /*
173 * MOVE_LEN opcode is not available in all SEC HW revisions,
174 * thus need to do some magic, i.e. self-patch the descriptor
175 * buffer.
176 */
177 read_move_cmd = append_move(desc, MOVE_SRC_DESCBUF |
178 MOVE_DEST_MATH2 |
179 (0x6 << MOVE_LEN_SHIFT));
180 write_move_cmd = append_move(desc, MOVE_SRC_MATH2 |
181 MOVE_DEST_DESCBUF |
182 MOVE_WAITCOMP |
183 (0x8 << MOVE_LEN_SHIFT));
184
185 /* Read and write cryptlen bytes */
186 aead_append_src_dst(desc, FIFOLD_TYPE_MSG | FIFOLD_TYPE_FLUSH1);
187
188 /*
189 * Insert a NOP here, since we need at least 4 instructions between
190 * code patching the descriptor buffer and the location being patched.
191 */
192 jump_cmd = append_jump(desc, JUMP_TEST_ALL);
193 set_jump_tgt_here(desc, jump_cmd);
194
195 set_move_tgt_here(desc, read_move_cmd);
196 set_move_tgt_here(desc, write_move_cmd);
197 append_cmd(desc, CMD_LOAD | DISABLE_AUTO_INFO_FIFO);
198 append_move(desc, MOVE_SRC_INFIFO_CL | MOVE_DEST_OUTFIFO |
199 MOVE_AUX_LS);
200 append_cmd(desc, CMD_LOAD | ENABLE_AUTO_INFO_FIFO);
201
202 /* Load ICV */
203 append_seq_fifo_load(desc, icvsize, FIFOLD_CLASS_CLASS2 |
204 FIFOLD_TYPE_LAST2 | FIFOLD_TYPE_ICV);
205
206 #ifdef DEBUG
207 print_hex_dump(KERN_ERR,
208 "aead null dec shdesc@" __stringify(__LINE__)": ",
209 DUMP_PREFIX_ADDRESS, 16, 4, desc, desc_bytes(desc), 1);
210 #endif
211 }
212 EXPORT_SYMBOL(cnstr_shdsc_aead_null_decap);
213
214 static void init_sh_desc_key_aead(u32 * const desc,
215 struct alginfo * const cdata,
216 struct alginfo * const adata,
217 const bool is_rfc3686, u32 *nonce, int era)
218 {
219 u32 *key_jump_cmd;
220 unsigned int enckeylen = cdata->keylen;
221
222 /* Note: Context registers are saved. */
223 init_sh_desc(desc, HDR_SHARE_SERIAL | HDR_SAVECTX);
224
225 /* Skip if already shared */
226 key_jump_cmd = append_jump(desc, JUMP_JSL | JUMP_TEST_ALL |
227 JUMP_COND_SHRD);
228
229 /*
230 * RFC3686 specific:
231 * | key = {AUTH_KEY, ENC_KEY, NONCE}
232 * | enckeylen = encryption key size + nonce size
233 */
234 if (is_rfc3686)
235 enckeylen -= CTR_RFC3686_NONCE_SIZE;
236
237 if (era < 6) {
238 if (adata->key_inline)
239 append_key_as_imm(desc, adata->key_virt,
240 adata->keylen_pad, adata->keylen,
241 CLASS_2 | KEY_DEST_MDHA_SPLIT |
242 KEY_ENC);
243 else
244 append_key(desc, adata->key_dma, adata->keylen,
245 CLASS_2 | KEY_DEST_MDHA_SPLIT | KEY_ENC);
246 } else {
247 append_proto_dkp(desc, adata);
248 }
249
250 if (cdata->key_inline)
251 append_key_as_imm(desc, cdata->key_virt, enckeylen,
252 enckeylen, CLASS_1 | KEY_DEST_CLASS_REG);
253 else
254 append_key(desc, cdata->key_dma, enckeylen, CLASS_1 |
255 KEY_DEST_CLASS_REG);
256
257 /* Load Counter into CONTEXT1 reg */
258 if (is_rfc3686) {
259 append_load_as_imm(desc, nonce, CTR_RFC3686_NONCE_SIZE,
260 LDST_CLASS_IND_CCB |
261 LDST_SRCDST_BYTE_OUTFIFO | LDST_IMM);
262 append_move(desc,
263 MOVE_SRC_OUTFIFO |
264 MOVE_DEST_CLASS1CTX |
265 (16 << MOVE_OFFSET_SHIFT) |
266 (CTR_RFC3686_NONCE_SIZE << MOVE_LEN_SHIFT));
267 }
268
269 set_jump_tgt_here(desc, key_jump_cmd);
270 }
271
272 /**
273 * cnstr_shdsc_aead_encap - IPSec ESP encapsulation shared descriptor
274 * (non-protocol).
275 * @desc: pointer to buffer used for descriptor construction
276 * @cdata: pointer to block cipher transform definitions
277 * Valid algorithm values - one of OP_ALG_ALGSEL_{AES, DES, 3DES} ANDed
278 * with OP_ALG_AAI_CBC or OP_ALG_AAI_CTR_MOD128.
279 * @adata: pointer to authentication transform definitions.
280 * A split key is required for SEC Era < 6; the size of the split key
281 * is specified in this case. Valid algorithm values - one of
282 * OP_ALG_ALGSEL_{MD5, SHA1, SHA224, SHA256, SHA384, SHA512} ANDed
283 * with OP_ALG_AAI_HMAC_PRECOMP.
284 * @ivsize: initialization vector size
285 * @icvsize: integrity check value (ICV) size (truncated or full)
286 * @is_rfc3686: true when ctr(aes) is wrapped by rfc3686 template
287 * @nonce: pointer to rfc3686 nonce
288 * @ctx1_iv_off: IV offset in CONTEXT1 register
289 * @is_qi: true when called from caam/qi
290 * @era: SEC Era
291 */
292 void cnstr_shdsc_aead_encap(u32 * const desc, struct alginfo *cdata,
293 struct alginfo *adata, unsigned int ivsize,
294 unsigned int icvsize, const bool is_rfc3686,
295 u32 *nonce, const u32 ctx1_iv_off, const bool is_qi,
296 int era)
297 {
298 /* Note: Context registers are saved. */
299 init_sh_desc_key_aead(desc, cdata, adata, is_rfc3686, nonce, era);
300
301 /* Class 2 operation */
302 append_operation(desc, adata->algtype | OP_ALG_AS_INITFINAL |
303 OP_ALG_ENCRYPT);
304
305 if (is_qi) {
306 u32 *wait_load_cmd;
307
308 /* REG3 = assoclen */
309 append_seq_load(desc, 4, LDST_CLASS_DECO |
310 LDST_SRCDST_WORD_DECO_MATH3 |
311 (4 << LDST_OFFSET_SHIFT));
312
313 wait_load_cmd = append_jump(desc, JUMP_JSL | JUMP_TEST_ALL |
314 JUMP_COND_CALM | JUMP_COND_NCP |
315 JUMP_COND_NOP | JUMP_COND_NIP |
316 JUMP_COND_NIFP);
317 set_jump_tgt_here(desc, wait_load_cmd);
318
319 append_seq_load(desc, ivsize, LDST_CLASS_1_CCB |
320 LDST_SRCDST_BYTE_CONTEXT |
321 (ctx1_iv_off << LDST_OFFSET_SHIFT));
322 }
323
324 /* Read and write assoclen bytes */
325 if (is_qi || era < 3) {
326 append_math_add(desc, VARSEQINLEN, ZERO, REG3, CAAM_CMD_SZ);
327 append_math_add(desc, VARSEQOUTLEN, ZERO, REG3, CAAM_CMD_SZ);
328 } else {
329 append_math_add(desc, VARSEQINLEN, ZERO, DPOVRD, CAAM_CMD_SZ);
330 append_math_add(desc, VARSEQOUTLEN, ZERO, DPOVRD, CAAM_CMD_SZ);
331 }
332
333 /* Skip assoc data */
334 append_seq_fifo_store(desc, 0, FIFOST_TYPE_SKIP | FIFOLDST_VLF);
335
336 /* read assoc before reading payload */
337 append_seq_fifo_load(desc, 0, FIFOLD_CLASS_CLASS2 | FIFOLD_TYPE_MSG |
338 FIFOLDST_VLF);
339
340 /* Load Counter into CONTEXT1 reg */
341 if (is_rfc3686)
342 append_load_imm_be32(desc, 1, LDST_IMM | LDST_CLASS_1_CCB |
343 LDST_SRCDST_BYTE_CONTEXT |
344 ((ctx1_iv_off + CTR_RFC3686_IV_SIZE) <<
345 LDST_OFFSET_SHIFT));
346
347 /* Class 1 operation */
348 append_operation(desc, cdata->algtype | OP_ALG_AS_INITFINAL |
349 OP_ALG_ENCRYPT);
350
351 /* Read and write cryptlen bytes */
352 append_math_add(desc, VARSEQINLEN, SEQINLEN, REG0, CAAM_CMD_SZ);
353 append_math_add(desc, VARSEQOUTLEN, SEQINLEN, REG0, CAAM_CMD_SZ);
354 aead_append_src_dst(desc, FIFOLD_TYPE_MSG1OUT2);
355
356 /* Write ICV */
357 append_seq_store(desc, icvsize, LDST_CLASS_2_CCB |
358 LDST_SRCDST_BYTE_CONTEXT);
359
360 #ifdef DEBUG
361 print_hex_dump(KERN_ERR, "aead enc shdesc@" __stringify(__LINE__)": ",
362 DUMP_PREFIX_ADDRESS, 16, 4, desc, desc_bytes(desc), 1);
363 #endif
364 }
365 EXPORT_SYMBOL(cnstr_shdsc_aead_encap);
366
367 /**
368 * cnstr_shdsc_aead_decap - IPSec ESP decapsulation shared descriptor
369 * (non-protocol).
370 * @desc: pointer to buffer used for descriptor construction
371 * @cdata: pointer to block cipher transform definitions
372 * Valid algorithm values - one of OP_ALG_ALGSEL_{AES, DES, 3DES} ANDed
373 * with OP_ALG_AAI_CBC or OP_ALG_AAI_CTR_MOD128.
374 * @adata: pointer to authentication transform definitions.
375 * A split key is required for SEC Era < 6; the size of the split key
376 * is specified in this case. Valid algorithm values - one of
377 * OP_ALG_ALGSEL_{MD5, SHA1, SHA224, SHA256, SHA384, SHA512} ANDed
378 * with OP_ALG_AAI_HMAC_PRECOMP.
379 * @ivsize: initialization vector size
380 * @icvsize: integrity check value (ICV) size (truncated or full)
381 * @is_rfc3686: true when ctr(aes) is wrapped by rfc3686 template
382 * @nonce: pointer to rfc3686 nonce
383 * @ctx1_iv_off: IV offset in CONTEXT1 register
384 * @is_qi: true when called from caam/qi
385 * @era: SEC Era
386 */
387 void cnstr_shdsc_aead_decap(u32 * const desc, struct alginfo *cdata,
388 struct alginfo *adata, unsigned int ivsize,
389 unsigned int icvsize, const bool geniv,
390 const bool is_rfc3686, u32 *nonce,
391 const u32 ctx1_iv_off, const bool is_qi, int era)
392 {
393 /* Note: Context registers are saved. */
394 init_sh_desc_key_aead(desc, cdata, adata, is_rfc3686, nonce, era);
395
396 /* Class 2 operation */
397 append_operation(desc, adata->algtype | OP_ALG_AS_INITFINAL |
398 OP_ALG_DECRYPT | OP_ALG_ICV_ON);
399
400 if (is_qi) {
401 u32 *wait_load_cmd;
402
403 /* REG3 = assoclen */
404 append_seq_load(desc, 4, LDST_CLASS_DECO |
405 LDST_SRCDST_WORD_DECO_MATH3 |
406 (4 << LDST_OFFSET_SHIFT));
407
408 wait_load_cmd = append_jump(desc, JUMP_JSL | JUMP_TEST_ALL |
409 JUMP_COND_CALM | JUMP_COND_NCP |
410 JUMP_COND_NOP | JUMP_COND_NIP |
411 JUMP_COND_NIFP);
412 set_jump_tgt_here(desc, wait_load_cmd);
413
414 if (!geniv)
415 append_seq_load(desc, ivsize, LDST_CLASS_1_CCB |
416 LDST_SRCDST_BYTE_CONTEXT |
417 (ctx1_iv_off << LDST_OFFSET_SHIFT));
418 }
419
420 /* Read and write assoclen bytes */
421 if (is_qi || era < 3) {
422 append_math_add(desc, VARSEQINLEN, ZERO, REG3, CAAM_CMD_SZ);
423 if (geniv)
424 append_math_add_imm_u32(desc, VARSEQOUTLEN, REG3, IMM,
425 ivsize);
426 else
427 append_math_add(desc, VARSEQOUTLEN, ZERO, REG3,
428 CAAM_CMD_SZ);
429 } else {
430 append_math_add(desc, VARSEQINLEN, ZERO, DPOVRD, CAAM_CMD_SZ);
431 if (geniv)
432 append_math_add_imm_u32(desc, VARSEQOUTLEN, DPOVRD, IMM,
433 ivsize);
434 else
435 append_math_add(desc, VARSEQOUTLEN, ZERO, DPOVRD,
436 CAAM_CMD_SZ);
437 }
438
439 /* Skip assoc data */
440 append_seq_fifo_store(desc, 0, FIFOST_TYPE_SKIP | FIFOLDST_VLF);
441
442 /* read assoc before reading payload */
443 append_seq_fifo_load(desc, 0, FIFOLD_CLASS_CLASS2 | FIFOLD_TYPE_MSG |
444 KEY_VLF);
445
446 if (geniv) {
447 append_seq_load(desc, ivsize, LDST_CLASS_1_CCB |
448 LDST_SRCDST_BYTE_CONTEXT |
449 (ctx1_iv_off << LDST_OFFSET_SHIFT));
450 append_move(desc, MOVE_SRC_CLASS1CTX | MOVE_DEST_CLASS2INFIFO |
451 (ctx1_iv_off << MOVE_OFFSET_SHIFT) | ivsize);
452 }
453
454 /* Load Counter into CONTEXT1 reg */
455 if (is_rfc3686)
456 append_load_imm_be32(desc, 1, LDST_IMM | LDST_CLASS_1_CCB |
457 LDST_SRCDST_BYTE_CONTEXT |
458 ((ctx1_iv_off + CTR_RFC3686_IV_SIZE) <<
459 LDST_OFFSET_SHIFT));
460
461 /* Choose operation */
462 if (ctx1_iv_off)
463 append_operation(desc, cdata->algtype | OP_ALG_AS_INITFINAL |
464 OP_ALG_DECRYPT);
465 else
466 append_dec_op1(desc, cdata->algtype);
467
468 /* Read and write cryptlen bytes */
469 append_math_add(desc, VARSEQINLEN, SEQOUTLEN, REG0, CAAM_CMD_SZ);
470 append_math_add(desc, VARSEQOUTLEN, SEQOUTLEN, REG0, CAAM_CMD_SZ);
471 aead_append_src_dst(desc, FIFOLD_TYPE_MSG);
472
473 /* Load ICV */
474 append_seq_fifo_load(desc, icvsize, FIFOLD_CLASS_CLASS2 |
475 FIFOLD_TYPE_LAST2 | FIFOLD_TYPE_ICV);
476
477 #ifdef DEBUG
478 print_hex_dump(KERN_ERR, "aead dec shdesc@" __stringify(__LINE__)": ",
479 DUMP_PREFIX_ADDRESS, 16, 4, desc, desc_bytes(desc), 1);
480 #endif
481 }
482 EXPORT_SYMBOL(cnstr_shdsc_aead_decap);
483
484 /**
485 * cnstr_shdsc_aead_givencap - IPSec ESP encapsulation shared descriptor
486 * (non-protocol) with HW-generated initialization
487 * vector.
488 * @desc: pointer to buffer used for descriptor construction
489 * @cdata: pointer to block cipher transform definitions
490 * Valid algorithm values - one of OP_ALG_ALGSEL_{AES, DES, 3DES} ANDed
491 * with OP_ALG_AAI_CBC or OP_ALG_AAI_CTR_MOD128.
492 * @adata: pointer to authentication transform definitions.
493 * A split key is required for SEC Era < 6; the size of the split key
494 * is specified in this case. Valid algorithm values - one of
495 * OP_ALG_ALGSEL_{MD5, SHA1, SHA224, SHA256, SHA384, SHA512} ANDed
496 * with OP_ALG_AAI_HMAC_PRECOMP.
497 * @ivsize: initialization vector size
498 * @icvsize: integrity check value (ICV) size (truncated or full)
499 * @is_rfc3686: true when ctr(aes) is wrapped by rfc3686 template
500 * @nonce: pointer to rfc3686 nonce
501 * @ctx1_iv_off: IV offset in CONTEXT1 register
502 * @is_qi: true when called from caam/qi
503 * @era: SEC Era
504 */
505 void cnstr_shdsc_aead_givencap(u32 * const desc, struct alginfo *cdata,
506 struct alginfo *adata, unsigned int ivsize,
507 unsigned int icvsize, const bool is_rfc3686,
508 u32 *nonce, const u32 ctx1_iv_off,
509 const bool is_qi, int era)
510 {
511 u32 geniv, moveiv;
512
513 /* Note: Context registers are saved. */
514 init_sh_desc_key_aead(desc, cdata, adata, is_rfc3686, nonce, era);
515
516 if (is_qi) {
517 u32 *wait_load_cmd;
518
519 /* REG3 = assoclen */
520 append_seq_load(desc, 4, LDST_CLASS_DECO |
521 LDST_SRCDST_WORD_DECO_MATH3 |
522 (4 << LDST_OFFSET_SHIFT));
523
524 wait_load_cmd = append_jump(desc, JUMP_JSL | JUMP_TEST_ALL |
525 JUMP_COND_CALM | JUMP_COND_NCP |
526 JUMP_COND_NOP | JUMP_COND_NIP |
527 JUMP_COND_NIFP);
528 set_jump_tgt_here(desc, wait_load_cmd);
529 }
530
531 if (is_rfc3686) {
532 if (is_qi)
533 append_seq_load(desc, ivsize, LDST_CLASS_1_CCB |
534 LDST_SRCDST_BYTE_CONTEXT |
535 (ctx1_iv_off << LDST_OFFSET_SHIFT));
536
537 goto copy_iv;
538 }
539
540 /* Generate IV */
541 geniv = NFIFOENTRY_STYPE_PAD | NFIFOENTRY_DEST_DECO |
542 NFIFOENTRY_DTYPE_MSG | NFIFOENTRY_LC1 |
543 NFIFOENTRY_PTYPE_RND | (ivsize << NFIFOENTRY_DLEN_SHIFT);
544 append_load_imm_u32(desc, geniv, LDST_CLASS_IND_CCB |
545 LDST_SRCDST_WORD_INFO_FIFO | LDST_IMM);
546 append_cmd(desc, CMD_LOAD | DISABLE_AUTO_INFO_FIFO);
547 append_move(desc, MOVE_WAITCOMP |
548 MOVE_SRC_INFIFO | MOVE_DEST_CLASS1CTX |
549 (ctx1_iv_off << MOVE_OFFSET_SHIFT) |
550 (ivsize << MOVE_LEN_SHIFT));
551 append_cmd(desc, CMD_LOAD | ENABLE_AUTO_INFO_FIFO);
552
553 copy_iv:
554 /* Copy IV to class 1 context */
555 append_move(desc, MOVE_SRC_CLASS1CTX | MOVE_DEST_OUTFIFO |
556 (ctx1_iv_off << MOVE_OFFSET_SHIFT) |
557 (ivsize << MOVE_LEN_SHIFT));
558
559 /* Return to encryption */
560 append_operation(desc, adata->algtype | OP_ALG_AS_INITFINAL |
561 OP_ALG_ENCRYPT);
562
563 /* Read and write assoclen bytes */
564 if (is_qi || era < 3) {
565 append_math_add(desc, VARSEQINLEN, ZERO, REG3, CAAM_CMD_SZ);
566 append_math_add(desc, VARSEQOUTLEN, ZERO, REG3, CAAM_CMD_SZ);
567 } else {
568 append_math_add(desc, VARSEQINLEN, ZERO, DPOVRD, CAAM_CMD_SZ);
569 append_math_add(desc, VARSEQOUTLEN, ZERO, DPOVRD, CAAM_CMD_SZ);
570 }
571
572 /* Skip assoc data */
573 append_seq_fifo_store(desc, 0, FIFOST_TYPE_SKIP | FIFOLDST_VLF);
574
575 /* read assoc before reading payload */
576 append_seq_fifo_load(desc, 0, FIFOLD_CLASS_CLASS2 | FIFOLD_TYPE_MSG |
577 KEY_VLF);
578
579 /* Copy iv from outfifo to class 2 fifo */
580 moveiv = NFIFOENTRY_STYPE_OFIFO | NFIFOENTRY_DEST_CLASS2 |
581 NFIFOENTRY_DTYPE_MSG | (ivsize << NFIFOENTRY_DLEN_SHIFT);
582 append_load_imm_u32(desc, moveiv, LDST_CLASS_IND_CCB |
583 LDST_SRCDST_WORD_INFO_FIFO | LDST_IMM);
584 append_load_imm_u32(desc, ivsize, LDST_CLASS_2_CCB |
585 LDST_SRCDST_WORD_DATASZ_REG | LDST_IMM);
586
587 /* Load Counter into CONTEXT1 reg */
588 if (is_rfc3686)
589 append_load_imm_be32(desc, 1, LDST_IMM | LDST_CLASS_1_CCB |
590 LDST_SRCDST_BYTE_CONTEXT |
591 ((ctx1_iv_off + CTR_RFC3686_IV_SIZE) <<
592 LDST_OFFSET_SHIFT));
593
594 /* Class 1 operation */
595 append_operation(desc, cdata->algtype | OP_ALG_AS_INITFINAL |
596 OP_ALG_ENCRYPT);
597
598 /* Will write ivsize + cryptlen */
599 append_math_add(desc, VARSEQOUTLEN, SEQINLEN, REG0, CAAM_CMD_SZ);
600
601 /* Not need to reload iv */
602 append_seq_fifo_load(desc, ivsize,
603 FIFOLD_CLASS_SKIP);
604
605 /* Will read cryptlen */
606 append_math_add(desc, VARSEQINLEN, SEQINLEN, REG0, CAAM_CMD_SZ);
607 append_seq_fifo_load(desc, 0, FIFOLD_CLASS_BOTH | KEY_VLF |
608 FIFOLD_TYPE_MSG1OUT2 | FIFOLD_TYPE_LASTBOTH);
609 append_seq_fifo_store(desc, 0, FIFOST_TYPE_MESSAGE_DATA | KEY_VLF);
610
611 /* Write ICV */
612 append_seq_store(desc, icvsize, LDST_CLASS_2_CCB |
613 LDST_SRCDST_BYTE_CONTEXT);
614
615 #ifdef DEBUG
616 print_hex_dump(KERN_ERR,
617 "aead givenc shdesc@" __stringify(__LINE__)": ",
618 DUMP_PREFIX_ADDRESS, 16, 4, desc, desc_bytes(desc), 1);
619 #endif
620 }
621 EXPORT_SYMBOL(cnstr_shdsc_aead_givencap);
622
623 /**
624 * cnstr_shdsc_gcm_encap - gcm encapsulation shared descriptor
625 * @desc: pointer to buffer used for descriptor construction
626 * @cdata: pointer to block cipher transform definitions
627 * Valid algorithm values - OP_ALG_ALGSEL_AES ANDed with OP_ALG_AAI_GCM.
628 * @icvsize: integrity check value (ICV) size (truncated or full)
629 */
630 void cnstr_shdsc_gcm_encap(u32 * const desc, struct alginfo *cdata,
631 unsigned int icvsize)
632 {
633 u32 *key_jump_cmd, *zero_payload_jump_cmd, *zero_assoc_jump_cmd1,
634 *zero_assoc_jump_cmd2;
635
636 init_sh_desc(desc, HDR_SHARE_SERIAL);
637
638 /* skip key loading if they are loaded due to sharing */
639 key_jump_cmd = append_jump(desc, JUMP_JSL | JUMP_TEST_ALL |
640 JUMP_COND_SHRD);
641 if (cdata->key_inline)
642 append_key_as_imm(desc, cdata->key_virt, cdata->keylen,
643 cdata->keylen, CLASS_1 | KEY_DEST_CLASS_REG);
644 else
645 append_key(desc, cdata->key_dma, cdata->keylen, CLASS_1 |
646 KEY_DEST_CLASS_REG);
647 set_jump_tgt_here(desc, key_jump_cmd);
648
649 /* class 1 operation */
650 append_operation(desc, cdata->algtype | OP_ALG_AS_INITFINAL |
651 OP_ALG_ENCRYPT);
652
653 /* if assoclen + cryptlen is ZERO, skip to ICV write */
654 append_math_sub(desc, VARSEQOUTLEN, SEQINLEN, REG0, CAAM_CMD_SZ);
655 zero_assoc_jump_cmd2 = append_jump(desc, JUMP_TEST_ALL |
656 JUMP_COND_MATH_Z);
657
658 /* if assoclen is ZERO, skip reading the assoc data */
659 append_math_add(desc, VARSEQINLEN, ZERO, REG3, CAAM_CMD_SZ);
660 zero_assoc_jump_cmd1 = append_jump(desc, JUMP_TEST_ALL |
661 JUMP_COND_MATH_Z);
662
663 append_math_add(desc, VARSEQOUTLEN, ZERO, REG3, CAAM_CMD_SZ);
664
665 /* skip assoc data */
666 append_seq_fifo_store(desc, 0, FIFOST_TYPE_SKIP | FIFOLDST_VLF);
667
668 /* cryptlen = seqinlen - assoclen */
669 append_math_sub(desc, VARSEQOUTLEN, SEQINLEN, REG3, CAAM_CMD_SZ);
670
671 /* if cryptlen is ZERO jump to zero-payload commands */
672 zero_payload_jump_cmd = append_jump(desc, JUMP_TEST_ALL |
673 JUMP_COND_MATH_Z);
674
675 /* read assoc data */
676 append_seq_fifo_load(desc, 0, FIFOLD_CLASS_CLASS1 | FIFOLDST_VLF |
677 FIFOLD_TYPE_AAD | FIFOLD_TYPE_FLUSH1);
678 set_jump_tgt_here(desc, zero_assoc_jump_cmd1);
679
680 append_math_sub(desc, VARSEQINLEN, SEQINLEN, REG0, CAAM_CMD_SZ);
681
682 /* write encrypted data */
683 append_seq_fifo_store(desc, 0, FIFOST_TYPE_MESSAGE_DATA | FIFOLDST_VLF);
684
685 /* read payload data */
686 append_seq_fifo_load(desc, 0, FIFOLD_CLASS_CLASS1 | FIFOLDST_VLF |
687 FIFOLD_TYPE_MSG | FIFOLD_TYPE_LAST1);
688
689 /* jump the zero-payload commands */
690 append_jump(desc, JUMP_TEST_ALL | 2);
691
692 /* zero-payload commands */
693 set_jump_tgt_here(desc, zero_payload_jump_cmd);
694
695 /* read assoc data */
696 append_seq_fifo_load(desc, 0, FIFOLD_CLASS_CLASS1 | FIFOLDST_VLF |
697 FIFOLD_TYPE_AAD | FIFOLD_TYPE_LAST1);
698
699 /* There is no input data */
700 set_jump_tgt_here(desc, zero_assoc_jump_cmd2);
701
702 /* write ICV */
703 append_seq_store(desc, icvsize, LDST_CLASS_1_CCB |
704 LDST_SRCDST_BYTE_CONTEXT);
705
706 #ifdef DEBUG
707 print_hex_dump(KERN_ERR, "gcm enc shdesc@" __stringify(__LINE__)": ",
708 DUMP_PREFIX_ADDRESS, 16, 4, desc, desc_bytes(desc), 1);
709 #endif
710 }
711 EXPORT_SYMBOL(cnstr_shdsc_gcm_encap);
712
713 /**
714 * cnstr_shdsc_gcm_decap - gcm decapsulation shared descriptor
715 * @desc: pointer to buffer used for descriptor construction
716 * @cdata: pointer to block cipher transform definitions
717 * Valid algorithm values - OP_ALG_ALGSEL_AES ANDed with OP_ALG_AAI_GCM.
718 * @icvsize: integrity check value (ICV) size (truncated or full)
719 */
720 void cnstr_shdsc_gcm_decap(u32 * const desc, struct alginfo *cdata,
721 unsigned int icvsize)
722 {
723 u32 *key_jump_cmd, *zero_payload_jump_cmd, *zero_assoc_jump_cmd1;
724
725 init_sh_desc(desc, HDR_SHARE_SERIAL);
726
727 /* skip key loading if they are loaded due to sharing */
728 key_jump_cmd = append_jump(desc, JUMP_JSL |
729 JUMP_TEST_ALL | JUMP_COND_SHRD);
730 if (cdata->key_inline)
731 append_key_as_imm(desc, cdata->key_virt, cdata->keylen,
732 cdata->keylen, CLASS_1 | KEY_DEST_CLASS_REG);
733 else
734 append_key(desc, cdata->key_dma, cdata->keylen, CLASS_1 |
735 KEY_DEST_CLASS_REG);
736 set_jump_tgt_here(desc, key_jump_cmd);
737
738 /* class 1 operation */
739 append_operation(desc, cdata->algtype | OP_ALG_AS_INITFINAL |
740 OP_ALG_DECRYPT | OP_ALG_ICV_ON);
741
742 /* if assoclen is ZERO, skip reading the assoc data */
743 append_math_add(desc, VARSEQINLEN, ZERO, REG3, CAAM_CMD_SZ);
744 zero_assoc_jump_cmd1 = append_jump(desc, JUMP_TEST_ALL |
745 JUMP_COND_MATH_Z);
746
747 append_math_add(desc, VARSEQOUTLEN, ZERO, REG3, CAAM_CMD_SZ);
748
749 /* skip assoc data */
750 append_seq_fifo_store(desc, 0, FIFOST_TYPE_SKIP | FIFOLDST_VLF);
751
752 /* read assoc data */
753 append_seq_fifo_load(desc, 0, FIFOLD_CLASS_CLASS1 | FIFOLDST_VLF |
754 FIFOLD_TYPE_AAD | FIFOLD_TYPE_FLUSH1);
755
756 set_jump_tgt_here(desc, zero_assoc_jump_cmd1);
757
758 /* cryptlen = seqoutlen - assoclen */
759 append_math_sub(desc, VARSEQINLEN, SEQOUTLEN, REG0, CAAM_CMD_SZ);
760
761 /* jump to zero-payload command if cryptlen is zero */
762 zero_payload_jump_cmd = append_jump(desc, JUMP_TEST_ALL |
763 JUMP_COND_MATH_Z);
764
765 append_math_sub(desc, VARSEQOUTLEN, SEQOUTLEN, REG0, CAAM_CMD_SZ);
766
767 /* store encrypted data */
768 append_seq_fifo_store(desc, 0, FIFOST_TYPE_MESSAGE_DATA | FIFOLDST_VLF);
769
770 /* read payload data */
771 append_seq_fifo_load(desc, 0, FIFOLD_CLASS_CLASS1 | FIFOLDST_VLF |
772 FIFOLD_TYPE_MSG | FIFOLD_TYPE_FLUSH1);
773
774 /* zero-payload command */
775 set_jump_tgt_here(desc, zero_payload_jump_cmd);
776
777 /* read ICV */
778 append_seq_fifo_load(desc, icvsize, FIFOLD_CLASS_CLASS1 |
779 FIFOLD_TYPE_ICV | FIFOLD_TYPE_LAST1);
780
781 #ifdef DEBUG
782 print_hex_dump(KERN_ERR, "gcm dec shdesc@" __stringify(__LINE__)": ",
783 DUMP_PREFIX_ADDRESS, 16, 4, desc, desc_bytes(desc), 1);
784 #endif
785 }
786 EXPORT_SYMBOL(cnstr_shdsc_gcm_decap);
787
788 /**
789 * cnstr_shdsc_rfc4106_encap - IPSec ESP gcm encapsulation shared descriptor
790 * (non-protocol).
791 * @desc: pointer to buffer used for descriptor construction
792 * @cdata: pointer to block cipher transform definitions
793 * Valid algorithm values - OP_ALG_ALGSEL_AES ANDed with OP_ALG_AAI_GCM.
794 * @icvsize: integrity check value (ICV) size (truncated or full)
795 */
796 void cnstr_shdsc_rfc4106_encap(u32 * const desc, struct alginfo *cdata,
797 unsigned int icvsize)
798 {
799 u32 *key_jump_cmd;
800
801 init_sh_desc(desc, HDR_SHARE_SERIAL);
802
803 /* Skip key loading if it is loaded due to sharing */
804 key_jump_cmd = append_jump(desc, JUMP_JSL | JUMP_TEST_ALL |
805 JUMP_COND_SHRD);
806 if (cdata->key_inline)
807 append_key_as_imm(desc, cdata->key_virt, cdata->keylen,
808 cdata->keylen, CLASS_1 | KEY_DEST_CLASS_REG);
809 else
810 append_key(desc, cdata->key_dma, cdata->keylen, CLASS_1 |
811 KEY_DEST_CLASS_REG);
812 set_jump_tgt_here(desc, key_jump_cmd);
813
814 /* Class 1 operation */
815 append_operation(desc, cdata->algtype | OP_ALG_AS_INITFINAL |
816 OP_ALG_ENCRYPT);
817
818 append_math_sub_imm_u32(desc, VARSEQINLEN, REG3, IMM, 8);
819 append_math_add(desc, VARSEQOUTLEN, ZERO, REG3, CAAM_CMD_SZ);
820
821 /* Read assoc data */
822 append_seq_fifo_load(desc, 0, FIFOLD_CLASS_CLASS1 | FIFOLDST_VLF |
823 FIFOLD_TYPE_AAD | FIFOLD_TYPE_FLUSH1);
824
825 /* Skip IV */
826 append_seq_fifo_load(desc, 8, FIFOLD_CLASS_SKIP);
827
828 /* Will read cryptlen bytes */
829 append_math_sub(desc, VARSEQINLEN, SEQINLEN, REG0, CAAM_CMD_SZ);
830
831 /* Workaround for erratum A-005473 (simultaneous SEQ FIFO skips) */
832 append_seq_fifo_load(desc, 0, FIFOLD_CLASS_CLASS1 | FIFOLD_TYPE_MSG);
833
834 /* Skip assoc data */
835 append_seq_fifo_store(desc, 0, FIFOST_TYPE_SKIP | FIFOLDST_VLF);
836
837 /* cryptlen = seqoutlen - assoclen */
838 append_math_sub(desc, VARSEQOUTLEN, VARSEQINLEN, REG0, CAAM_CMD_SZ);
839
840 /* Write encrypted data */
841 append_seq_fifo_store(desc, 0, FIFOST_TYPE_MESSAGE_DATA | FIFOLDST_VLF);
842
843 /* Read payload data */
844 append_seq_fifo_load(desc, 0, FIFOLD_CLASS_CLASS1 | FIFOLDST_VLF |
845 FIFOLD_TYPE_MSG | FIFOLD_TYPE_LAST1);
846
847 /* Write ICV */
848 append_seq_store(desc, icvsize, LDST_CLASS_1_CCB |
849 LDST_SRCDST_BYTE_CONTEXT);
850
851 #ifdef DEBUG
852 print_hex_dump(KERN_ERR,
853 "rfc4106 enc shdesc@" __stringify(__LINE__)": ",
854 DUMP_PREFIX_ADDRESS, 16, 4, desc, desc_bytes(desc), 1);
855 #endif
856 }
857 EXPORT_SYMBOL(cnstr_shdsc_rfc4106_encap);
858
859 /**
860 * cnstr_shdsc_rfc4106_decap - IPSec ESP gcm decapsulation shared descriptor
861 * (non-protocol).
862 * @desc: pointer to buffer used for descriptor construction
863 * @cdata: pointer to block cipher transform definitions
864 * Valid algorithm values - OP_ALG_ALGSEL_AES ANDed with OP_ALG_AAI_GCM.
865 * @icvsize: integrity check value (ICV) size (truncated or full)
866 */
867 void cnstr_shdsc_rfc4106_decap(u32 * const desc, struct alginfo *cdata,
868 unsigned int icvsize)
869 {
870 u32 *key_jump_cmd;
871
872 init_sh_desc(desc, HDR_SHARE_SERIAL);
873
874 /* Skip key loading if it is loaded due to sharing */
875 key_jump_cmd = append_jump(desc, JUMP_JSL | JUMP_TEST_ALL |
876 JUMP_COND_SHRD);
877 if (cdata->key_inline)
878 append_key_as_imm(desc, cdata->key_virt, cdata->keylen,
879 cdata->keylen, CLASS_1 |
880 KEY_DEST_CLASS_REG);
881 else
882 append_key(desc, cdata->key_dma, cdata->keylen, CLASS_1 |
883 KEY_DEST_CLASS_REG);
884 set_jump_tgt_here(desc, key_jump_cmd);
885
886 /* Class 1 operation */
887 append_operation(desc, cdata->algtype | OP_ALG_AS_INITFINAL |
888 OP_ALG_DECRYPT | OP_ALG_ICV_ON);
889
890 append_math_sub_imm_u32(desc, VARSEQINLEN, REG3, IMM, 8);
891 append_math_add(desc, VARSEQOUTLEN, ZERO, REG3, CAAM_CMD_SZ);
892
893 /* Read assoc data */
894 append_seq_fifo_load(desc, 0, FIFOLD_CLASS_CLASS1 | FIFOLDST_VLF |
895 FIFOLD_TYPE_AAD | FIFOLD_TYPE_FLUSH1);
896
897 /* Skip IV */
898 append_seq_fifo_load(desc, 8, FIFOLD_CLASS_SKIP);
899
900 /* Will read cryptlen bytes */
901 append_math_sub(desc, VARSEQINLEN, SEQOUTLEN, REG3, CAAM_CMD_SZ);
902
903 /* Workaround for erratum A-005473 (simultaneous SEQ FIFO skips) */
904 append_seq_fifo_load(desc, 0, FIFOLD_CLASS_CLASS1 | FIFOLD_TYPE_MSG);
905
906 /* Skip assoc data */
907 append_seq_fifo_store(desc, 0, FIFOST_TYPE_SKIP | FIFOLDST_VLF);
908
909 /* Will write cryptlen bytes */
910 append_math_sub(desc, VARSEQOUTLEN, SEQOUTLEN, REG0, CAAM_CMD_SZ);
911
912 /* Store payload data */
913 append_seq_fifo_store(desc, 0, FIFOST_TYPE_MESSAGE_DATA | FIFOLDST_VLF);
914
915 /* Read encrypted data */
916 append_seq_fifo_load(desc, 0, FIFOLD_CLASS_CLASS1 | FIFOLDST_VLF |
917 FIFOLD_TYPE_MSG | FIFOLD_TYPE_FLUSH1);
918
919 /* Read ICV */
920 append_seq_fifo_load(desc, icvsize, FIFOLD_CLASS_CLASS1 |
921 FIFOLD_TYPE_ICV | FIFOLD_TYPE_LAST1);
922
923 #ifdef DEBUG
924 print_hex_dump(KERN_ERR,
925 "rfc4106 dec shdesc@" __stringify(__LINE__)": ",
926 DUMP_PREFIX_ADDRESS, 16, 4, desc, desc_bytes(desc), 1);
927 #endif
928 }
929 EXPORT_SYMBOL(cnstr_shdsc_rfc4106_decap);
930
931 /**
932 * cnstr_shdsc_rfc4543_encap - IPSec ESP gmac encapsulation shared descriptor
933 * (non-protocol).
934 * @desc: pointer to buffer used for descriptor construction
935 * @cdata: pointer to block cipher transform definitions
936 * Valid algorithm values - OP_ALG_ALGSEL_AES ANDed with OP_ALG_AAI_GCM.
937 * @icvsize: integrity check value (ICV) size (truncated or full)
938 */
939 void cnstr_shdsc_rfc4543_encap(u32 * const desc, struct alginfo *cdata,
940 unsigned int icvsize)
941 {
942 u32 *key_jump_cmd, *read_move_cmd, *write_move_cmd;
943
944 init_sh_desc(desc, HDR_SHARE_SERIAL);
945
946 /* Skip key loading if it is loaded due to sharing */
947 key_jump_cmd = append_jump(desc, JUMP_JSL | JUMP_TEST_ALL |
948 JUMP_COND_SHRD);
949 if (cdata->key_inline)
950 append_key_as_imm(desc, cdata->key_virt, cdata->keylen,
951 cdata->keylen, CLASS_1 | KEY_DEST_CLASS_REG);
952 else
953 append_key(desc, cdata->key_dma, cdata->keylen, CLASS_1 |
954 KEY_DEST_CLASS_REG);
955 set_jump_tgt_here(desc, key_jump_cmd);
956
957 /* Class 1 operation */
958 append_operation(desc, cdata->algtype | OP_ALG_AS_INITFINAL |
959 OP_ALG_ENCRYPT);
960
961 /* assoclen + cryptlen = seqinlen */
962 append_math_sub(desc, REG3, SEQINLEN, REG0, CAAM_CMD_SZ);
963
964 /*
965 * MOVE_LEN opcode is not available in all SEC HW revisions,
966 * thus need to do some magic, i.e. self-patch the descriptor
967 * buffer.
968 */
969 read_move_cmd = append_move(desc, MOVE_SRC_DESCBUF | MOVE_DEST_MATH3 |
970 (0x6 << MOVE_LEN_SHIFT));
971 write_move_cmd = append_move(desc, MOVE_SRC_MATH3 | MOVE_DEST_DESCBUF |
972 (0x8 << MOVE_LEN_SHIFT));
973
974 /* Will read assoclen + cryptlen bytes */
975 append_math_sub(desc, VARSEQINLEN, SEQINLEN, REG0, CAAM_CMD_SZ);
976
977 /* Will write assoclen + cryptlen bytes */
978 append_math_sub(desc, VARSEQOUTLEN, SEQINLEN, REG0, CAAM_CMD_SZ);
979
980 /* Read and write assoclen + cryptlen bytes */
981 aead_append_src_dst(desc, FIFOLD_TYPE_AAD);
982
983 set_move_tgt_here(desc, read_move_cmd);
984 set_move_tgt_here(desc, write_move_cmd);
985 append_cmd(desc, CMD_LOAD | DISABLE_AUTO_INFO_FIFO);
986 /* Move payload data to OFIFO */
987 append_move(desc, MOVE_SRC_INFIFO_CL | MOVE_DEST_OUTFIFO);
988
989 /* Write ICV */
990 append_seq_store(desc, icvsize, LDST_CLASS_1_CCB |
991 LDST_SRCDST_BYTE_CONTEXT);
992
993 #ifdef DEBUG
994 print_hex_dump(KERN_ERR,
995 "rfc4543 enc shdesc@" __stringify(__LINE__)": ",
996 DUMP_PREFIX_ADDRESS, 16, 4, desc, desc_bytes(desc), 1);
997 #endif
998 }
999 EXPORT_SYMBOL(cnstr_shdsc_rfc4543_encap);
1000
1001 /**
1002 * cnstr_shdsc_rfc4543_decap - IPSec ESP gmac decapsulation shared descriptor
1003 * (non-protocol).
1004 * @desc: pointer to buffer used for descriptor construction
1005 * @cdata: pointer to block cipher transform definitions
1006 * Valid algorithm values - OP_ALG_ALGSEL_AES ANDed with OP_ALG_AAI_GCM.
1007 * @icvsize: integrity check value (ICV) size (truncated or full)
1008 */
1009 void cnstr_shdsc_rfc4543_decap(u32 * const desc, struct alginfo *cdata,
1010 unsigned int icvsize)
1011 {
1012 u32 *key_jump_cmd, *read_move_cmd, *write_move_cmd;
1013
1014 init_sh_desc(desc, HDR_SHARE_SERIAL);
1015
1016 /* Skip key loading if it is loaded due to sharing */
1017 key_jump_cmd = append_jump(desc, JUMP_JSL | JUMP_TEST_ALL |
1018 JUMP_COND_SHRD);
1019 if (cdata->key_inline)
1020 append_key_as_imm(desc, cdata->key_virt, cdata->keylen,
1021 cdata->keylen, CLASS_1 | KEY_DEST_CLASS_REG);
1022 else
1023 append_key(desc, cdata->key_dma, cdata->keylen, CLASS_1 |
1024 KEY_DEST_CLASS_REG);
1025 set_jump_tgt_here(desc, key_jump_cmd);
1026
1027 /* Class 1 operation */
1028 append_operation(desc, cdata->algtype | OP_ALG_AS_INITFINAL |
1029 OP_ALG_DECRYPT | OP_ALG_ICV_ON);
1030
1031 /* assoclen + cryptlen = seqoutlen */
1032 append_math_sub(desc, REG3, SEQOUTLEN, REG0, CAAM_CMD_SZ);
1033
1034 /*
1035 * MOVE_LEN opcode is not available in all SEC HW revisions,
1036 * thus need to do some magic, i.e. self-patch the descriptor
1037 * buffer.
1038 */
1039 read_move_cmd = append_move(desc, MOVE_SRC_DESCBUF | MOVE_DEST_MATH3 |
1040 (0x6 << MOVE_LEN_SHIFT));
1041 write_move_cmd = append_move(desc, MOVE_SRC_MATH3 | MOVE_DEST_DESCBUF |
1042 (0x8 << MOVE_LEN_SHIFT));
1043
1044 /* Will read assoclen + cryptlen bytes */
1045 append_math_sub(desc, VARSEQINLEN, SEQOUTLEN, REG0, CAAM_CMD_SZ);
1046
1047 /* Will write assoclen + cryptlen bytes */
1048 append_math_sub(desc, VARSEQOUTLEN, SEQOUTLEN, REG0, CAAM_CMD_SZ);
1049
1050 /* Store payload data */
1051 append_seq_fifo_store(desc, 0, FIFOST_TYPE_MESSAGE_DATA | FIFOLDST_VLF);
1052
1053 /* In-snoop assoclen + cryptlen data */
1054 append_seq_fifo_load(desc, 0, FIFOLD_CLASS_BOTH | FIFOLDST_VLF |
1055 FIFOLD_TYPE_AAD | FIFOLD_TYPE_LAST2FLUSH1);
1056
1057 set_move_tgt_here(desc, read_move_cmd);
1058 set_move_tgt_here(desc, write_move_cmd);
1059 append_cmd(desc, CMD_LOAD | DISABLE_AUTO_INFO_FIFO);
1060 /* Move payload data to OFIFO */
1061 append_move(desc, MOVE_SRC_INFIFO_CL | MOVE_DEST_OUTFIFO);
1062 append_cmd(desc, CMD_LOAD | ENABLE_AUTO_INFO_FIFO);
1063
1064 /* Read ICV */
1065 append_seq_fifo_load(desc, icvsize, FIFOLD_CLASS_CLASS1 |
1066 FIFOLD_TYPE_ICV | FIFOLD_TYPE_LAST1);
1067
1068 #ifdef DEBUG
1069 print_hex_dump(KERN_ERR,
1070 "rfc4543 dec shdesc@" __stringify(__LINE__)": ",
1071 DUMP_PREFIX_ADDRESS, 16, 4, desc, desc_bytes(desc), 1);
1072 #endif
1073 }
1074 EXPORT_SYMBOL(cnstr_shdsc_rfc4543_decap);
1075
1076 /*
1077 * For ablkcipher encrypt and decrypt, read from req->src and
1078 * write to req->dst
1079 */
1080 static inline void ablkcipher_append_src_dst(u32 *desc)
1081 {
1082 append_math_add(desc, VARSEQOUTLEN, SEQINLEN, REG0, CAAM_CMD_SZ);
1083 append_math_add(desc, VARSEQINLEN, SEQINLEN, REG0, CAAM_CMD_SZ);
1084 append_seq_fifo_load(desc, 0, FIFOLD_CLASS_CLASS1 |
1085 KEY_VLF | FIFOLD_TYPE_MSG | FIFOLD_TYPE_LAST1);
1086 append_seq_fifo_store(desc, 0, FIFOST_TYPE_MESSAGE_DATA | KEY_VLF);
1087 }
1088
1089 /**
1090 * cnstr_shdsc_ablkcipher_encap - ablkcipher encapsulation shared descriptor
1091 * @desc: pointer to buffer used for descriptor construction
1092 * @cdata: pointer to block cipher transform definitions
1093 * Valid algorithm values - one of OP_ALG_ALGSEL_{AES, DES, 3DES} ANDed
1094 * with OP_ALG_AAI_CBC or OP_ALG_AAI_CTR_MOD128.
1095 * @ivsize: initialization vector size
1096 * @is_rfc3686: true when ctr(aes) is wrapped by rfc3686 template
1097 * @ctx1_iv_off: IV offset in CONTEXT1 register
1098 */
1099 void cnstr_shdsc_ablkcipher_encap(u32 * const desc, struct alginfo *cdata,
1100 unsigned int ivsize, const bool is_rfc3686,
1101 const u32 ctx1_iv_off)
1102 {
1103 u32 *key_jump_cmd;
1104
1105 init_sh_desc(desc, HDR_SHARE_SERIAL | HDR_SAVECTX);
1106 /* Skip if already shared */
1107 key_jump_cmd = append_jump(desc, JUMP_JSL | JUMP_TEST_ALL |
1108 JUMP_COND_SHRD);
1109
1110 /* Load class1 key only */
1111 append_key_as_imm(desc, cdata->key_virt, cdata->keylen,
1112 cdata->keylen, CLASS_1 | KEY_DEST_CLASS_REG);
1113
1114 /* Load nonce into CONTEXT1 reg */
1115 if (is_rfc3686) {
1116 const u8 *nonce = cdata->key_virt + cdata->keylen;
1117
1118 append_load_as_imm(desc, nonce, CTR_RFC3686_NONCE_SIZE,
1119 LDST_CLASS_IND_CCB |
1120 LDST_SRCDST_BYTE_OUTFIFO | LDST_IMM);
1121 append_move(desc, MOVE_WAITCOMP | MOVE_SRC_OUTFIFO |
1122 MOVE_DEST_CLASS1CTX | (16 << MOVE_OFFSET_SHIFT) |
1123 (CTR_RFC3686_NONCE_SIZE << MOVE_LEN_SHIFT));
1124 }
1125
1126 set_jump_tgt_here(desc, key_jump_cmd);
1127
1128 /* Load iv */
1129 append_seq_load(desc, ivsize, LDST_SRCDST_BYTE_CONTEXT |
1130 LDST_CLASS_1_CCB | (ctx1_iv_off << LDST_OFFSET_SHIFT));
1131
1132 /* Load counter into CONTEXT1 reg */
1133 if (is_rfc3686)
1134 append_load_imm_be32(desc, 1, LDST_IMM | LDST_CLASS_1_CCB |
1135 LDST_SRCDST_BYTE_CONTEXT |
1136 ((ctx1_iv_off + CTR_RFC3686_IV_SIZE) <<
1137 LDST_OFFSET_SHIFT));
1138
1139 /* Load operation */
1140 append_operation(desc, cdata->algtype | OP_ALG_AS_INITFINAL |
1141 OP_ALG_ENCRYPT);
1142
1143 /* Perform operation */
1144 ablkcipher_append_src_dst(desc);
1145
1146 #ifdef DEBUG
1147 print_hex_dump(KERN_ERR,
1148 "ablkcipher enc shdesc@" __stringify(__LINE__)": ",
1149 DUMP_PREFIX_ADDRESS, 16, 4, desc, desc_bytes(desc), 1);
1150 #endif
1151 }
1152 EXPORT_SYMBOL(cnstr_shdsc_ablkcipher_encap);
1153
1154 /**
1155 * cnstr_shdsc_ablkcipher_decap - ablkcipher decapsulation shared descriptor
1156 * @desc: pointer to buffer used for descriptor construction
1157 * @cdata: pointer to block cipher transform definitions
1158 * Valid algorithm values - one of OP_ALG_ALGSEL_{AES, DES, 3DES} ANDed
1159 * with OP_ALG_AAI_CBC or OP_ALG_AAI_CTR_MOD128.
1160 * @ivsize: initialization vector size
1161 * @is_rfc3686: true when ctr(aes) is wrapped by rfc3686 template
1162 * @ctx1_iv_off: IV offset in CONTEXT1 register
1163 */
1164 void cnstr_shdsc_ablkcipher_decap(u32 * const desc, struct alginfo *cdata,
1165 unsigned int ivsize, const bool is_rfc3686,
1166 const u32 ctx1_iv_off)
1167 {
1168 u32 *key_jump_cmd;
1169
1170 init_sh_desc(desc, HDR_SHARE_SERIAL | HDR_SAVECTX);
1171 /* Skip if already shared */
1172 key_jump_cmd = append_jump(desc, JUMP_JSL | JUMP_TEST_ALL |
1173 JUMP_COND_SHRD);
1174
1175 /* Load class1 key only */
1176 append_key_as_imm(desc, cdata->key_virt, cdata->keylen,
1177 cdata->keylen, CLASS_1 | KEY_DEST_CLASS_REG);
1178
1179 /* Load nonce into CONTEXT1 reg */
1180 if (is_rfc3686) {
1181 const u8 *nonce = cdata->key_virt + cdata->keylen;
1182
1183 append_load_as_imm(desc, nonce, CTR_RFC3686_NONCE_SIZE,
1184 LDST_CLASS_IND_CCB |
1185 LDST_SRCDST_BYTE_OUTFIFO | LDST_IMM);
1186 append_move(desc, MOVE_WAITCOMP | MOVE_SRC_OUTFIFO |
1187 MOVE_DEST_CLASS1CTX | (16 << MOVE_OFFSET_SHIFT) |
1188 (CTR_RFC3686_NONCE_SIZE << MOVE_LEN_SHIFT));
1189 }
1190
1191 set_jump_tgt_here(desc, key_jump_cmd);
1192
1193 /* load IV */
1194 append_seq_load(desc, ivsize, LDST_SRCDST_BYTE_CONTEXT |
1195 LDST_CLASS_1_CCB | (ctx1_iv_off << LDST_OFFSET_SHIFT));
1196
1197 /* Load counter into CONTEXT1 reg */
1198 if (is_rfc3686)
1199 append_load_imm_be32(desc, 1, LDST_IMM | LDST_CLASS_1_CCB |
1200 LDST_SRCDST_BYTE_CONTEXT |
1201 ((ctx1_iv_off + CTR_RFC3686_IV_SIZE) <<
1202 LDST_OFFSET_SHIFT));
1203
1204 /* Choose operation */
1205 if (ctx1_iv_off)
1206 append_operation(desc, cdata->algtype | OP_ALG_AS_INITFINAL |
1207 OP_ALG_DECRYPT);
1208 else
1209 append_dec_op1(desc, cdata->algtype);
1210
1211 /* Perform operation */
1212 ablkcipher_append_src_dst(desc);
1213
1214 #ifdef DEBUG
1215 print_hex_dump(KERN_ERR,
1216 "ablkcipher dec shdesc@" __stringify(__LINE__)": ",
1217 DUMP_PREFIX_ADDRESS, 16, 4, desc, desc_bytes(desc), 1);
1218 #endif
1219 }
1220 EXPORT_SYMBOL(cnstr_shdsc_ablkcipher_decap);
1221
1222 /**
1223 * cnstr_shdsc_ablkcipher_givencap - ablkcipher encapsulation shared descriptor
1224 * with HW-generated initialization vector.
1225 * @desc: pointer to buffer used for descriptor construction
1226 * @cdata: pointer to block cipher transform definitions
1227 * Valid algorithm values - one of OP_ALG_ALGSEL_{AES, DES, 3DES} ANDed
1228 * with OP_ALG_AAI_CBC.
1229 * @ivsize: initialization vector size
1230 * @is_rfc3686: true when ctr(aes) is wrapped by rfc3686 template
1231 * @ctx1_iv_off: IV offset in CONTEXT1 register
1232 */
1233 void cnstr_shdsc_ablkcipher_givencap(u32 * const desc, struct alginfo *cdata,
1234 unsigned int ivsize, const bool is_rfc3686,
1235 const u32 ctx1_iv_off)
1236 {
1237 u32 *key_jump_cmd, geniv;
1238
1239 init_sh_desc(desc, HDR_SHARE_SERIAL | HDR_SAVECTX);
1240 /* Skip if already shared */
1241 key_jump_cmd = append_jump(desc, JUMP_JSL | JUMP_TEST_ALL |
1242 JUMP_COND_SHRD);
1243
1244 /* Load class1 key only */
1245 append_key_as_imm(desc, cdata->key_virt, cdata->keylen,
1246 cdata->keylen, CLASS_1 | KEY_DEST_CLASS_REG);
1247
1248 /* Load Nonce into CONTEXT1 reg */
1249 if (is_rfc3686) {
1250 const u8 *nonce = cdata->key_virt + cdata->keylen;
1251
1252 append_load_as_imm(desc, nonce, CTR_RFC3686_NONCE_SIZE,
1253 LDST_CLASS_IND_CCB |
1254 LDST_SRCDST_BYTE_OUTFIFO | LDST_IMM);
1255 append_move(desc, MOVE_WAITCOMP | MOVE_SRC_OUTFIFO |
1256 MOVE_DEST_CLASS1CTX | (16 << MOVE_OFFSET_SHIFT) |
1257 (CTR_RFC3686_NONCE_SIZE << MOVE_LEN_SHIFT));
1258 }
1259 set_jump_tgt_here(desc, key_jump_cmd);
1260
1261 /* Generate IV */
1262 geniv = NFIFOENTRY_STYPE_PAD | NFIFOENTRY_DEST_DECO |
1263 NFIFOENTRY_DTYPE_MSG | NFIFOENTRY_LC1 | NFIFOENTRY_PTYPE_RND |
1264 (ivsize << NFIFOENTRY_DLEN_SHIFT);
1265 append_load_imm_u32(desc, geniv, LDST_CLASS_IND_CCB |
1266 LDST_SRCDST_WORD_INFO_FIFO | LDST_IMM);
1267 append_cmd(desc, CMD_LOAD | DISABLE_AUTO_INFO_FIFO);
1268 append_move(desc, MOVE_WAITCOMP | MOVE_SRC_INFIFO |
1269 MOVE_DEST_CLASS1CTX | (ivsize << MOVE_LEN_SHIFT) |
1270 (ctx1_iv_off << MOVE_OFFSET_SHIFT));
1271 append_cmd(desc, CMD_LOAD | ENABLE_AUTO_INFO_FIFO);
1272
1273 /* Copy generated IV to memory */
1274 append_seq_store(desc, ivsize, LDST_SRCDST_BYTE_CONTEXT |
1275 LDST_CLASS_1_CCB | (ctx1_iv_off << LDST_OFFSET_SHIFT));
1276
1277 /* Load Counter into CONTEXT1 reg */
1278 if (is_rfc3686)
1279 append_load_imm_be32(desc, 1, LDST_IMM | LDST_CLASS_1_CCB |
1280 LDST_SRCDST_BYTE_CONTEXT |
1281 ((ctx1_iv_off + CTR_RFC3686_IV_SIZE) <<
1282 LDST_OFFSET_SHIFT));
1283
1284 if (ctx1_iv_off)
1285 append_jump(desc, JUMP_JSL | JUMP_TEST_ALL | JUMP_COND_NCP |
1286 (1 << JUMP_OFFSET_SHIFT));
1287
1288 /* Load operation */
1289 append_operation(desc, cdata->algtype | OP_ALG_AS_INITFINAL |
1290 OP_ALG_ENCRYPT);
1291
1292 /* Perform operation */
1293 ablkcipher_append_src_dst(desc);
1294
1295 #ifdef DEBUG
1296 print_hex_dump(KERN_ERR,
1297 "ablkcipher givenc shdesc@" __stringify(__LINE__) ": ",
1298 DUMP_PREFIX_ADDRESS, 16, 4, desc, desc_bytes(desc), 1);
1299 #endif
1300 }
1301 EXPORT_SYMBOL(cnstr_shdsc_ablkcipher_givencap);
1302
1303 /**
1304 * cnstr_shdsc_xts_ablkcipher_encap - xts ablkcipher encapsulation shared
1305 * descriptor
1306 * @desc: pointer to buffer used for descriptor construction
1307 * @cdata: pointer to block cipher transform definitions
1308 * Valid algorithm values - OP_ALG_ALGSEL_AES ANDed with OP_ALG_AAI_XTS.
1309 */
1310 void cnstr_shdsc_xts_ablkcipher_encap(u32 * const desc, struct alginfo *cdata)
1311 {
1312 __be64 sector_size = cpu_to_be64(512);
1313 u32 *key_jump_cmd;
1314
1315 init_sh_desc(desc, HDR_SHARE_SERIAL | HDR_SAVECTX);
1316 /* Skip if already shared */
1317 key_jump_cmd = append_jump(desc, JUMP_JSL | JUMP_TEST_ALL |
1318 JUMP_COND_SHRD);
1319
1320 /* Load class1 keys only */
1321 append_key_as_imm(desc, cdata->key_virt, cdata->keylen,
1322 cdata->keylen, CLASS_1 | KEY_DEST_CLASS_REG);
1323
1324 /* Load sector size with index 40 bytes (0x28) */
1325 append_load_as_imm(desc, (void *)&sector_size, 8, LDST_CLASS_1_CCB |
1326 LDST_SRCDST_BYTE_CONTEXT |
1327 (0x28 << LDST_OFFSET_SHIFT));
1328
1329 set_jump_tgt_here(desc, key_jump_cmd);
1330
1331 /*
1332 * create sequence for loading the sector index
1333 * Upper 8B of IV - will be used as sector index
1334 * Lower 8B of IV - will be discarded
1335 */
1336 append_seq_load(desc, 8, LDST_SRCDST_BYTE_CONTEXT | LDST_CLASS_1_CCB |
1337 (0x20 << LDST_OFFSET_SHIFT));
1338 append_seq_fifo_load(desc, 8, FIFOLD_CLASS_SKIP);
1339
1340 /* Load operation */
1341 append_operation(desc, cdata->algtype | OP_ALG_AS_INITFINAL |
1342 OP_ALG_ENCRYPT);
1343
1344 /* Perform operation */
1345 ablkcipher_append_src_dst(desc);
1346
1347 #ifdef DEBUG
1348 print_hex_dump(KERN_ERR,
1349 "xts ablkcipher enc shdesc@" __stringify(__LINE__) ": ",
1350 DUMP_PREFIX_ADDRESS, 16, 4, desc, desc_bytes(desc), 1);
1351 #endif
1352 }
1353 EXPORT_SYMBOL(cnstr_shdsc_xts_ablkcipher_encap);
1354
1355 /**
1356 * cnstr_shdsc_xts_ablkcipher_decap - xts ablkcipher decapsulation shared
1357 * descriptor
1358 * @desc: pointer to buffer used for descriptor construction
1359 * @cdata: pointer to block cipher transform definitions
1360 * Valid algorithm values - OP_ALG_ALGSEL_AES ANDed with OP_ALG_AAI_XTS.
1361 */
1362 void cnstr_shdsc_xts_ablkcipher_decap(u32 * const desc, struct alginfo *cdata)
1363 {
1364 __be64 sector_size = cpu_to_be64(512);
1365 u32 *key_jump_cmd;
1366
1367 init_sh_desc(desc, HDR_SHARE_SERIAL | HDR_SAVECTX);
1368 /* Skip if already shared */
1369 key_jump_cmd = append_jump(desc, JUMP_JSL | JUMP_TEST_ALL |
1370 JUMP_COND_SHRD);
1371
1372 /* Load class1 key only */
1373 append_key_as_imm(desc, cdata->key_virt, cdata->keylen,
1374 cdata->keylen, CLASS_1 | KEY_DEST_CLASS_REG);
1375
1376 /* Load sector size with index 40 bytes (0x28) */
1377 append_load_as_imm(desc, (void *)&sector_size, 8, LDST_CLASS_1_CCB |
1378 LDST_SRCDST_BYTE_CONTEXT |
1379 (0x28 << LDST_OFFSET_SHIFT));
1380
1381 set_jump_tgt_here(desc, key_jump_cmd);
1382
1383 /*
1384 * create sequence for loading the sector index
1385 * Upper 8B of IV - will be used as sector index
1386 * Lower 8B of IV - will be discarded
1387 */
1388 append_seq_load(desc, 8, LDST_SRCDST_BYTE_CONTEXT | LDST_CLASS_1_CCB |
1389 (0x20 << LDST_OFFSET_SHIFT));
1390 append_seq_fifo_load(desc, 8, FIFOLD_CLASS_SKIP);
1391
1392 /* Load operation */
1393 append_dec_op1(desc, cdata->algtype);
1394
1395 /* Perform operation */
1396 ablkcipher_append_src_dst(desc);
1397
1398 #ifdef DEBUG
1399 print_hex_dump(KERN_ERR,
1400 "xts ablkcipher dec shdesc@" __stringify(__LINE__) ": ",
1401 DUMP_PREFIX_ADDRESS, 16, 4, desc, desc_bytes(desc), 1);
1402 #endif
1403 }
1404 EXPORT_SYMBOL(cnstr_shdsc_xts_ablkcipher_decap);
1405
1406 MODULE_LICENSE("GPL");
1407 MODULE_DESCRIPTION("FSL CAAM descriptor support");
1408 MODULE_AUTHOR("Freescale Semiconductor - NMG/STC");
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