1// SPDX-License-Identifier: GPL-2.0-only 2/* 3 * Cipher algorithms supported by the CESA: DES, 3DES and AES. 4 * 5 * Author: Boris Brezillon <boris.brezillon@free-electrons.com> 6 * Author: Arnaud Ebalard <arno@natisbad.org> 7 * 8 * This work is based on an initial version written by 9 * Sebastian Andrzej Siewior < sebastian at breakpoint dot cc > 10 */ 11 12#include <crypto/aes.h> 13#include <crypto/internal/des.h> 14#include <linux/device.h> 15#include <linux/dma-mapping.h> 16 17#include "cesa.h" 18 19struct mv_cesa_des_ctx { 20 struct mv_cesa_ctx base; 21 u8 key[DES_KEY_SIZE]; 22}; 23 24struct mv_cesa_des3_ctx { 25 struct mv_cesa_ctx base; 26 u8 key[DES3_EDE_KEY_SIZE]; 27}; 28 29struct mv_cesa_aes_ctx { 30 struct mv_cesa_ctx base; 31 struct crypto_aes_ctx aes; 32}; 33 34struct mv_cesa_skcipher_dma_iter { 35 struct mv_cesa_dma_iter base; 36 struct mv_cesa_sg_dma_iter src; 37 struct mv_cesa_sg_dma_iter dst; 38}; 39 40static inline void 41mv_cesa_skcipher_req_iter_init(struct mv_cesa_skcipher_dma_iter *iter, 42 struct skcipher_request *req) 43{ 44 mv_cesa_req_dma_iter_init(&iter->base, req->cryptlen); 45 mv_cesa_sg_dma_iter_init(&iter->src, req->src, DMA_TO_DEVICE); 46 mv_cesa_sg_dma_iter_init(&iter->dst, req->dst, DMA_FROM_DEVICE); 47} 48 49static inline bool 50mv_cesa_skcipher_req_iter_next_op(struct mv_cesa_skcipher_dma_iter *iter) 51{ 52 iter->src.op_offset = 0; 53 iter->dst.op_offset = 0; 54 55 return mv_cesa_req_dma_iter_next_op(&iter->base); 56} 57 58static inline void 59mv_cesa_skcipher_dma_cleanup(struct skcipher_request *req) 60{ 61 struct mv_cesa_skcipher_req *creq = skcipher_request_ctx(req); 62 63 if (req->dst != req->src) { 64 dma_unmap_sg(cesa_dev->dev, req->dst, creq->dst_nents, 65 DMA_FROM_DEVICE); 66 dma_unmap_sg(cesa_dev->dev, req->src, creq->src_nents, 67 DMA_TO_DEVICE); 68 } else { 69 dma_unmap_sg(cesa_dev->dev, req->src, creq->src_nents, 70 DMA_BIDIRECTIONAL); 71 } 72 mv_cesa_dma_cleanup(&creq->base); 73} 74 75static inline void mv_cesa_skcipher_cleanup(struct skcipher_request *req) 76{ 77 struct mv_cesa_skcipher_req *creq = skcipher_request_ctx(req); 78 79 if (mv_cesa_req_get_type(&creq->base) == CESA_DMA_REQ) 80 mv_cesa_skcipher_dma_cleanup(req); 81} 82 83static void mv_cesa_skcipher_std_step(struct skcipher_request *req) 84{ 85 struct mv_cesa_skcipher_req *creq = skcipher_request_ctx(req); 86 struct mv_cesa_skcipher_std_req *sreq = &creq->std; 87 struct mv_cesa_engine *engine = creq->base.engine; 88 size_t len = min_t(size_t, req->cryptlen - sreq->offset, 89 CESA_SA_SRAM_PAYLOAD_SIZE); 90 91 mv_cesa_adjust_op(engine, &sreq->op); 92 memcpy_toio(engine->sram, &sreq->op, sizeof(sreq->op)); 93 94 len = sg_pcopy_to_buffer(req->src, creq->src_nents, 95 engine->sram + CESA_SA_DATA_SRAM_OFFSET, 96 len, sreq->offset); 97 98 sreq->size = len; 99 mv_cesa_set_crypt_op_len(&sreq->op, len); 100 101 /* FIXME: only update enc_len field */ 102 if (!sreq->skip_ctx) { 103 memcpy_toio(engine->sram, &sreq->op, sizeof(sreq->op)); 104 sreq->skip_ctx = true; 105 } else { 106 memcpy_toio(engine->sram, &sreq->op, sizeof(sreq->op.desc)); 107 } 108 109 mv_cesa_set_int_mask(engine, CESA_SA_INT_ACCEL0_DONE); 110 writel_relaxed(CESA_SA_CFG_PARA_DIS, engine->regs + CESA_SA_CFG); 111 WARN_ON(readl(engine->regs + CESA_SA_CMD) & 112 CESA_SA_CMD_EN_CESA_SA_ACCL0); 113 writel(CESA_SA_CMD_EN_CESA_SA_ACCL0, engine->regs + CESA_SA_CMD); 114} 115 116static int mv_cesa_skcipher_std_process(struct skcipher_request *req, 117 u32 status) 118{ 119 struct mv_cesa_skcipher_req *creq = skcipher_request_ctx(req); 120 struct mv_cesa_skcipher_std_req *sreq = &creq->std; 121 struct mv_cesa_engine *engine = creq->base.engine; 122 size_t len; 123 124 len = sg_pcopy_from_buffer(req->dst, creq->dst_nents, 125 engine->sram + CESA_SA_DATA_SRAM_OFFSET, 126 sreq->size, sreq->offset); 127 128 sreq->offset += len; 129 if (sreq->offset < req->cryptlen) 130 return -EINPROGRESS; 131 132 return 0; 133} 134 135static int mv_cesa_skcipher_process(struct crypto_async_request *req, 136 u32 status) 137{ 138 struct skcipher_request *skreq = skcipher_request_cast(req); 139 struct mv_cesa_skcipher_req *creq = skcipher_request_ctx(skreq); 140 struct mv_cesa_req *basereq = &creq->base; 141 142 if (mv_cesa_req_get_type(basereq) == CESA_STD_REQ) 143 return mv_cesa_skcipher_std_process(skreq, status); 144 145 return mv_cesa_dma_process(basereq, status); 146} 147 148static void mv_cesa_skcipher_step(struct crypto_async_request *req) 149{ 150 struct skcipher_request *skreq = skcipher_request_cast(req); 151 struct mv_cesa_skcipher_req *creq = skcipher_request_ctx(skreq); 152 153 if (mv_cesa_req_get_type(&creq->base) == CESA_DMA_REQ) 154 mv_cesa_dma_step(&creq->base); 155 else 156 mv_cesa_skcipher_std_step(skreq); 157} 158 159static inline void 160mv_cesa_skcipher_dma_prepare(struct skcipher_request *req) 161{ 162 struct mv_cesa_skcipher_req *creq = skcipher_request_ctx(req); 163 struct mv_cesa_req *basereq = &creq->base; 164 165 mv_cesa_dma_prepare(basereq, basereq->engine); 166} 167 168static inline void 169mv_cesa_skcipher_std_prepare(struct skcipher_request *req) 170{ 171 struct mv_cesa_skcipher_req *creq = skcipher_request_ctx(req); 172 struct mv_cesa_skcipher_std_req *sreq = &creq->std; 173 174 sreq->size = 0; 175 sreq->offset = 0; 176} 177 178static inline void mv_cesa_skcipher_prepare(struct crypto_async_request *req, 179 struct mv_cesa_engine *engine) 180{ 181 struct skcipher_request *skreq = skcipher_request_cast(req); 182 struct mv_cesa_skcipher_req *creq = skcipher_request_ctx(skreq); 183 184 creq->base.engine = engine; 185 186 if (mv_cesa_req_get_type(&creq->base) == CESA_DMA_REQ) 187 mv_cesa_skcipher_dma_prepare(skreq); 188 else 189 mv_cesa_skcipher_std_prepare(skreq); 190} 191 192static inline void 193mv_cesa_skcipher_req_cleanup(struct crypto_async_request *req) 194{ 195 struct skcipher_request *skreq = skcipher_request_cast(req); 196 197 mv_cesa_skcipher_cleanup(skreq); 198} 199 200static void 201mv_cesa_skcipher_complete(struct crypto_async_request *req) 202{ 203 struct skcipher_request *skreq = skcipher_request_cast(req); 204 struct mv_cesa_skcipher_req *creq = skcipher_request_ctx(skreq); 205 struct mv_cesa_engine *engine = creq->base.engine; 206 unsigned int ivsize; 207 208 atomic_sub(skreq->cryptlen, &engine->load); 209 ivsize = crypto_skcipher_ivsize(crypto_skcipher_reqtfm(skreq)); 210 211 if (mv_cesa_req_get_type(&creq->base) == CESA_DMA_REQ) { 212 struct mv_cesa_req *basereq; 213 214 basereq = &creq->base; 215 memcpy(skreq->iv, basereq->chain.last->op->ctx.skcipher.iv, 216 ivsize); 217 } else { 218 memcpy_fromio(skreq->iv, 219 engine->sram + CESA_SA_CRYPT_IV_SRAM_OFFSET, 220 ivsize); 221 } 222} 223 224static const struct mv_cesa_req_ops mv_cesa_skcipher_req_ops = { 225 .step = mv_cesa_skcipher_step, 226 .process = mv_cesa_skcipher_process, 227 .cleanup = mv_cesa_skcipher_req_cleanup, 228 .complete = mv_cesa_skcipher_complete, 229}; 230 231static void mv_cesa_skcipher_cra_exit(struct crypto_tfm *tfm) 232{ 233 void *ctx = crypto_tfm_ctx(tfm); 234 235 memzero_explicit(ctx, tfm->__crt_alg->cra_ctxsize); 236} 237 238static int mv_cesa_skcipher_cra_init(struct crypto_tfm *tfm) 239{ 240 struct mv_cesa_ctx *ctx = crypto_tfm_ctx(tfm); 241 242 ctx->ops = &mv_cesa_skcipher_req_ops; 243 244 crypto_skcipher_set_reqsize(__crypto_skcipher_cast(tfm), 245 sizeof(struct mv_cesa_skcipher_req)); 246 247 return 0; 248} 249 250static int mv_cesa_aes_setkey(struct crypto_skcipher *cipher, const u8 *key, 251 unsigned int len) 252{ 253 struct crypto_tfm *tfm = crypto_skcipher_tfm(cipher); 254 struct mv_cesa_aes_ctx *ctx = crypto_tfm_ctx(tfm); 255 int remaining; 256 int offset; 257 int ret; 258 int i; 259 260 ret = aes_expandkey(&ctx->aes, key, len); 261 if (ret) 262 return ret; 263 264 remaining = (ctx->aes.key_length - 16) / 4; 265 offset = ctx->aes.key_length + 24 - remaining; 266 for (i = 0; i < remaining; i++) 267 ctx->aes.key_dec[4 + i] = ctx->aes.key_enc[offset + i]; 268 269 return 0; 270} 271 272static int mv_cesa_des_setkey(struct crypto_skcipher *cipher, const u8 *key, 273 unsigned int len) 274{ 275 struct mv_cesa_des_ctx *ctx = crypto_skcipher_ctx(cipher); 276 int err; 277 278 err = verify_skcipher_des_key(cipher, key); 279 if (err) 280 return err; 281 282 memcpy(ctx->key, key, DES_KEY_SIZE); 283 284 return 0; 285} 286 287static int mv_cesa_des3_ede_setkey(struct crypto_skcipher *cipher, 288 const u8 *key, unsigned int len) 289{ 290 struct mv_cesa_des3_ctx *ctx = crypto_skcipher_ctx(cipher); 291 int err; 292 293 err = verify_skcipher_des3_key(cipher, key); 294 if (err) 295 return err; 296 297 memcpy(ctx->key, key, DES3_EDE_KEY_SIZE); 298 299 return 0; 300} 301 302static int mv_cesa_skcipher_dma_req_init(struct skcipher_request *req, 303 const struct mv_cesa_op_ctx *op_templ) 304{ 305 struct mv_cesa_skcipher_req *creq = skcipher_request_ctx(req); 306 gfp_t flags = (req->base.flags & CRYPTO_TFM_REQ_MAY_SLEEP) ? 307 GFP_KERNEL : GFP_ATOMIC; 308 struct mv_cesa_req *basereq = &creq->base; 309 struct mv_cesa_skcipher_dma_iter iter; 310 bool skip_ctx = false; 311 int ret; 312 313 basereq->chain.first = NULL; 314 basereq->chain.last = NULL; 315 316 if (req->src != req->dst) { 317 ret = dma_map_sg(cesa_dev->dev, req->src, creq->src_nents, 318 DMA_TO_DEVICE); 319 if (!ret) 320 return -ENOMEM; 321 322 ret = dma_map_sg(cesa_dev->dev, req->dst, creq->dst_nents, 323 DMA_FROM_DEVICE); 324 if (!ret) { 325 ret = -ENOMEM; 326 goto err_unmap_src; 327 } 328 } else { 329 ret = dma_map_sg(cesa_dev->dev, req->src, creq->src_nents, 330 DMA_BIDIRECTIONAL); 331 if (!ret) 332 return -ENOMEM; 333 } 334 335 mv_cesa_tdma_desc_iter_init(&basereq->chain); 336 mv_cesa_skcipher_req_iter_init(&iter, req); 337 338 do { 339 struct mv_cesa_op_ctx *op; 340 341 op = mv_cesa_dma_add_op(&basereq->chain, op_templ, skip_ctx, 342 flags); 343 if (IS_ERR(op)) { 344 ret = PTR_ERR(op); 345 goto err_free_tdma; 346 } 347 skip_ctx = true; 348 349 mv_cesa_set_crypt_op_len(op, iter.base.op_len); 350 351 /* Add input transfers */ 352 ret = mv_cesa_dma_add_op_transfers(&basereq->chain, &iter.base, 353 &iter.src, flags); 354 if (ret) 355 goto err_free_tdma; 356 357 /* Add dummy desc to launch the crypto operation */ 358 ret = mv_cesa_dma_add_dummy_launch(&basereq->chain, flags); 359 if (ret) 360 goto err_free_tdma; 361 362 /* Add output transfers */ 363 ret = mv_cesa_dma_add_op_transfers(&basereq->chain, &iter.base, 364 &iter.dst, flags); 365 if (ret) 366 goto err_free_tdma; 367 368 } while (mv_cesa_skcipher_req_iter_next_op(&iter)); 369 370 /* Add output data for IV */ 371 ret = mv_cesa_dma_add_result_op(&basereq->chain, 372 CESA_SA_CFG_SRAM_OFFSET, 373 CESA_SA_DATA_SRAM_OFFSET, 374 CESA_TDMA_SRC_IN_SRAM, flags); 375 376 if (ret) 377 goto err_free_tdma; 378 379 basereq->chain.last->flags |= CESA_TDMA_END_OF_REQ; 380 381 return 0; 382 383err_free_tdma: 384 mv_cesa_dma_cleanup(basereq); 385 if (req->dst != req->src) 386 dma_unmap_sg(cesa_dev->dev, req->dst, creq->dst_nents, 387 DMA_FROM_DEVICE); 388 389err_unmap_src: 390 dma_unmap_sg(cesa_dev->dev, req->src, creq->src_nents, 391 req->dst != req->src ? DMA_TO_DEVICE : DMA_BIDIRECTIONAL); 392 393 return ret; 394} 395 396static inline int 397mv_cesa_skcipher_std_req_init(struct skcipher_request *req, 398 const struct mv_cesa_op_ctx *op_templ) 399{ 400 struct mv_cesa_skcipher_req *creq = skcipher_request_ctx(req); 401 struct mv_cesa_skcipher_std_req *sreq = &creq->std; 402 struct mv_cesa_req *basereq = &creq->base; 403 404 sreq->op = *op_templ; 405 sreq->skip_ctx = false; 406 basereq->chain.first = NULL; 407 basereq->chain.last = NULL; 408 409 return 0; 410} 411 412static int mv_cesa_skcipher_req_init(struct skcipher_request *req, 413 struct mv_cesa_op_ctx *tmpl) 414{ 415 struct mv_cesa_skcipher_req *creq = skcipher_request_ctx(req); 416 struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req); 417 unsigned int blksize = crypto_skcipher_blocksize(tfm); 418 int ret; 419 420 if (!IS_ALIGNED(req->cryptlen, blksize)) 421 return -EINVAL; 422 423 creq->src_nents = sg_nents_for_len(req->src, req->cryptlen); 424 if (creq->src_nents < 0) { 425 dev_err(cesa_dev->dev, "Invalid number of src SG"); 426 return creq->src_nents; 427 } 428 creq->dst_nents = sg_nents_for_len(req->dst, req->cryptlen); 429 if (creq->dst_nents < 0) { 430 dev_err(cesa_dev->dev, "Invalid number of dst SG"); 431 return creq->dst_nents; 432 } 433 434 mv_cesa_update_op_cfg(tmpl, CESA_SA_DESC_CFG_OP_CRYPT_ONLY, 435 CESA_SA_DESC_CFG_OP_MSK); 436 437 if (cesa_dev->caps->has_tdma) 438 ret = mv_cesa_skcipher_dma_req_init(req, tmpl); 439 else 440 ret = mv_cesa_skcipher_std_req_init(req, tmpl); 441 442 return ret; 443} 444 445static int mv_cesa_skcipher_queue_req(struct skcipher_request *req, 446 struct mv_cesa_op_ctx *tmpl) 447{ 448 int ret; 449 struct mv_cesa_skcipher_req *creq = skcipher_request_ctx(req); 450 struct mv_cesa_engine *engine; 451 452 ret = mv_cesa_skcipher_req_init(req, tmpl); 453 if (ret) 454 return ret; 455 456 engine = mv_cesa_select_engine(req->cryptlen); 457 mv_cesa_skcipher_prepare(&req->base, engine); 458 459 ret = mv_cesa_queue_req(&req->base, &creq->base); 460 461 if (mv_cesa_req_needs_cleanup(&req->base, ret)) 462 mv_cesa_skcipher_cleanup(req); 463 464 return ret; 465} 466 467static int mv_cesa_des_op(struct skcipher_request *req, 468 struct mv_cesa_op_ctx *tmpl) 469{ 470 struct mv_cesa_des_ctx *ctx = crypto_tfm_ctx(req->base.tfm); 471 472 mv_cesa_update_op_cfg(tmpl, CESA_SA_DESC_CFG_CRYPTM_DES, 473 CESA_SA_DESC_CFG_CRYPTM_MSK); 474 475 memcpy(tmpl->ctx.skcipher.key, ctx->key, DES_KEY_SIZE); 476 477 return mv_cesa_skcipher_queue_req(req, tmpl); 478} 479 480static int mv_cesa_ecb_des_encrypt(struct skcipher_request *req) 481{ 482 struct mv_cesa_op_ctx tmpl; 483 484 mv_cesa_set_op_cfg(&tmpl, 485 CESA_SA_DESC_CFG_CRYPTCM_ECB | 486 CESA_SA_DESC_CFG_DIR_ENC); 487 488 return mv_cesa_des_op(req, &tmpl); 489} 490 491static int mv_cesa_ecb_des_decrypt(struct skcipher_request *req) 492{ 493 struct mv_cesa_op_ctx tmpl; 494 495 mv_cesa_set_op_cfg(&tmpl, 496 CESA_SA_DESC_CFG_CRYPTCM_ECB | 497 CESA_SA_DESC_CFG_DIR_DEC); 498 499 return mv_cesa_des_op(req, &tmpl); 500} 501 502struct skcipher_alg mv_cesa_ecb_des_alg = { 503 .setkey = mv_cesa_des_setkey, 504 .encrypt = mv_cesa_ecb_des_encrypt, 505 .decrypt = mv_cesa_ecb_des_decrypt, 506 .min_keysize = DES_KEY_SIZE, 507 .max_keysize = DES_KEY_SIZE, 508 .base = { 509 .cra_name = "ecb(des)", 510 .cra_driver_name = "mv-ecb-des", 511 .cra_priority = 300, 512 .cra_flags = CRYPTO_ALG_KERN_DRIVER_ONLY | CRYPTO_ALG_ASYNC | 513 CRYPTO_ALG_ALLOCATES_MEMORY, 514 .cra_blocksize = DES_BLOCK_SIZE, 515 .cra_ctxsize = sizeof(struct mv_cesa_des_ctx), 516 .cra_alignmask = 0, 517 .cra_module = THIS_MODULE, 518 .cra_init = mv_cesa_skcipher_cra_init, 519 .cra_exit = mv_cesa_skcipher_cra_exit, 520 }, 521}; 522 523static int mv_cesa_cbc_des_op(struct skcipher_request *req, 524 struct mv_cesa_op_ctx *tmpl) 525{ 526 mv_cesa_update_op_cfg(tmpl, CESA_SA_DESC_CFG_CRYPTCM_CBC, 527 CESA_SA_DESC_CFG_CRYPTCM_MSK); 528 529 memcpy(tmpl->ctx.skcipher.iv, req->iv, DES_BLOCK_SIZE); 530 531 return mv_cesa_des_op(req, tmpl); 532} 533 534static int mv_cesa_cbc_des_encrypt(struct skcipher_request *req) 535{ 536 struct mv_cesa_op_ctx tmpl; 537 538 mv_cesa_set_op_cfg(&tmpl, CESA_SA_DESC_CFG_DIR_ENC); 539 540 return mv_cesa_cbc_des_op(req, &tmpl); 541} 542 543static int mv_cesa_cbc_des_decrypt(struct skcipher_request *req) 544{ 545 struct mv_cesa_op_ctx tmpl; 546 547 mv_cesa_set_op_cfg(&tmpl, CESA_SA_DESC_CFG_DIR_DEC); 548 549 return mv_cesa_cbc_des_op(req, &tmpl); 550} 551 552struct skcipher_alg mv_cesa_cbc_des_alg = { 553 .setkey = mv_cesa_des_setkey, 554 .encrypt = mv_cesa_cbc_des_encrypt, 555 .decrypt = mv_cesa_cbc_des_decrypt, 556 .min_keysize = DES_KEY_SIZE, 557 .max_keysize = DES_KEY_SIZE, 558 .ivsize = DES_BLOCK_SIZE, 559 .base = { 560 .cra_name = "cbc(des)", 561 .cra_driver_name = "mv-cbc-des", 562 .cra_priority = 300, 563 .cra_flags = CRYPTO_ALG_KERN_DRIVER_ONLY | CRYPTO_ALG_ASYNC | 564 CRYPTO_ALG_ALLOCATES_MEMORY, 565 .cra_blocksize = DES_BLOCK_SIZE, 566 .cra_ctxsize = sizeof(struct mv_cesa_des_ctx), 567 .cra_alignmask = 0, 568 .cra_module = THIS_MODULE, 569 .cra_init = mv_cesa_skcipher_cra_init, 570 .cra_exit = mv_cesa_skcipher_cra_exit, 571 }, 572}; 573 574static int mv_cesa_des3_op(struct skcipher_request *req, 575 struct mv_cesa_op_ctx *tmpl) 576{ 577 struct mv_cesa_des3_ctx *ctx = crypto_tfm_ctx(req->base.tfm); 578 579 mv_cesa_update_op_cfg(tmpl, CESA_SA_DESC_CFG_CRYPTM_3DES, 580 CESA_SA_DESC_CFG_CRYPTM_MSK); 581 582 memcpy(tmpl->ctx.skcipher.key, ctx->key, DES3_EDE_KEY_SIZE); 583 584 return mv_cesa_skcipher_queue_req(req, tmpl); 585} 586 587static int mv_cesa_ecb_des3_ede_encrypt(struct skcipher_request *req) 588{ 589 struct mv_cesa_op_ctx tmpl; 590 591 mv_cesa_set_op_cfg(&tmpl, 592 CESA_SA_DESC_CFG_CRYPTCM_ECB | 593 CESA_SA_DESC_CFG_3DES_EDE | 594 CESA_SA_DESC_CFG_DIR_ENC); 595 596 return mv_cesa_des3_op(req, &tmpl); 597} 598 599static int mv_cesa_ecb_des3_ede_decrypt(struct skcipher_request *req) 600{ 601 struct mv_cesa_op_ctx tmpl; 602 603 mv_cesa_set_op_cfg(&tmpl, 604 CESA_SA_DESC_CFG_CRYPTCM_ECB | 605 CESA_SA_DESC_CFG_3DES_EDE | 606 CESA_SA_DESC_CFG_DIR_DEC); 607 608 return mv_cesa_des3_op(req, &tmpl); 609} 610 611struct skcipher_alg mv_cesa_ecb_des3_ede_alg = { 612 .setkey = mv_cesa_des3_ede_setkey, 613 .encrypt = mv_cesa_ecb_des3_ede_encrypt, 614 .decrypt = mv_cesa_ecb_des3_ede_decrypt, 615 .min_keysize = DES3_EDE_KEY_SIZE, 616 .max_keysize = DES3_EDE_KEY_SIZE, 617 .base = { 618 .cra_name = "ecb(des3_ede)", 619 .cra_driver_name = "mv-ecb-des3-ede", 620 .cra_priority = 300, 621 .cra_flags = CRYPTO_ALG_KERN_DRIVER_ONLY | CRYPTO_ALG_ASYNC | 622 CRYPTO_ALG_ALLOCATES_MEMORY, 623 .cra_blocksize = DES3_EDE_BLOCK_SIZE, 624 .cra_ctxsize = sizeof(struct mv_cesa_des3_ctx), 625 .cra_alignmask = 0, 626 .cra_module = THIS_MODULE, 627 .cra_init = mv_cesa_skcipher_cra_init, 628 .cra_exit = mv_cesa_skcipher_cra_exit, 629 }, 630}; 631 632static int mv_cesa_cbc_des3_op(struct skcipher_request *req, 633 struct mv_cesa_op_ctx *tmpl) 634{ 635 memcpy(tmpl->ctx.skcipher.iv, req->iv, DES3_EDE_BLOCK_SIZE); 636 637 return mv_cesa_des3_op(req, tmpl); 638} 639 640static int mv_cesa_cbc_des3_ede_encrypt(struct skcipher_request *req) 641{ 642 struct mv_cesa_op_ctx tmpl; 643 644 mv_cesa_set_op_cfg(&tmpl, 645 CESA_SA_DESC_CFG_CRYPTCM_CBC | 646 CESA_SA_DESC_CFG_3DES_EDE | 647 CESA_SA_DESC_CFG_DIR_ENC); 648 649 return mv_cesa_cbc_des3_op(req, &tmpl); 650} 651 652static int mv_cesa_cbc_des3_ede_decrypt(struct skcipher_request *req) 653{ 654 struct mv_cesa_op_ctx tmpl; 655 656 mv_cesa_set_op_cfg(&tmpl, 657 CESA_SA_DESC_CFG_CRYPTCM_CBC | 658 CESA_SA_DESC_CFG_3DES_EDE | 659 CESA_SA_DESC_CFG_DIR_DEC); 660 661 return mv_cesa_cbc_des3_op(req, &tmpl); 662} 663 664struct skcipher_alg mv_cesa_cbc_des3_ede_alg = { 665 .setkey = mv_cesa_des3_ede_setkey, 666 .encrypt = mv_cesa_cbc_des3_ede_encrypt, 667 .decrypt = mv_cesa_cbc_des3_ede_decrypt, 668 .min_keysize = DES3_EDE_KEY_SIZE, 669 .max_keysize = DES3_EDE_KEY_SIZE, 670 .ivsize = DES3_EDE_BLOCK_SIZE, 671 .base = { 672 .cra_name = "cbc(des3_ede)", 673 .cra_driver_name = "mv-cbc-des3-ede", 674 .cra_priority = 300, 675 .cra_flags = CRYPTO_ALG_KERN_DRIVER_ONLY | CRYPTO_ALG_ASYNC | 676 CRYPTO_ALG_ALLOCATES_MEMORY, 677 .cra_blocksize = DES3_EDE_BLOCK_SIZE, 678 .cra_ctxsize = sizeof(struct mv_cesa_des3_ctx), 679 .cra_alignmask = 0, 680 .cra_module = THIS_MODULE, 681 .cra_init = mv_cesa_skcipher_cra_init, 682 .cra_exit = mv_cesa_skcipher_cra_exit, 683 }, 684}; 685 686static int mv_cesa_aes_op(struct skcipher_request *req, 687 struct mv_cesa_op_ctx *tmpl) 688{ 689 struct mv_cesa_aes_ctx *ctx = crypto_tfm_ctx(req->base.tfm); 690 int i; 691 u32 *key; 692 u32 cfg; 693 694 cfg = CESA_SA_DESC_CFG_CRYPTM_AES; 695 696 if (mv_cesa_get_op_cfg(tmpl) & CESA_SA_DESC_CFG_DIR_DEC) 697 key = ctx->aes.key_dec; 698 else 699 key = ctx->aes.key_enc; 700 701 for (i = 0; i < ctx->aes.key_length / sizeof(u32); i++) 702 tmpl->ctx.skcipher.key[i] = cpu_to_le32(key[i]); 703 704 if (ctx->aes.key_length == 24) 705 cfg |= CESA_SA_DESC_CFG_AES_LEN_192; 706 else if (ctx->aes.key_length == 32) 707 cfg |= CESA_SA_DESC_CFG_AES_LEN_256; 708 709 mv_cesa_update_op_cfg(tmpl, cfg, 710 CESA_SA_DESC_CFG_CRYPTM_MSK | 711 CESA_SA_DESC_CFG_AES_LEN_MSK); 712 713 return mv_cesa_skcipher_queue_req(req, tmpl); 714} 715 716static int mv_cesa_ecb_aes_encrypt(struct skcipher_request *req) 717{ 718 struct mv_cesa_op_ctx tmpl; 719 720 mv_cesa_set_op_cfg(&tmpl, 721 CESA_SA_DESC_CFG_CRYPTCM_ECB | 722 CESA_SA_DESC_CFG_DIR_ENC); 723 724 return mv_cesa_aes_op(req, &tmpl); 725} 726 727static int mv_cesa_ecb_aes_decrypt(struct skcipher_request *req) 728{ 729 struct mv_cesa_op_ctx tmpl; 730 731 mv_cesa_set_op_cfg(&tmpl, 732 CESA_SA_DESC_CFG_CRYPTCM_ECB | 733 CESA_SA_DESC_CFG_DIR_DEC); 734 735 return mv_cesa_aes_op(req, &tmpl); 736} 737 738struct skcipher_alg mv_cesa_ecb_aes_alg = { 739 .setkey = mv_cesa_aes_setkey, 740 .encrypt = mv_cesa_ecb_aes_encrypt, 741 .decrypt = mv_cesa_ecb_aes_decrypt, 742 .min_keysize = AES_MIN_KEY_SIZE, 743 .max_keysize = AES_MAX_KEY_SIZE, 744 .base = { 745 .cra_name = "ecb(aes)", 746 .cra_driver_name = "mv-ecb-aes", 747 .cra_priority = 300, 748 .cra_flags = CRYPTO_ALG_KERN_DRIVER_ONLY | CRYPTO_ALG_ASYNC | 749 CRYPTO_ALG_ALLOCATES_MEMORY, 750 .cra_blocksize = AES_BLOCK_SIZE, 751 .cra_ctxsize = sizeof(struct mv_cesa_aes_ctx), 752 .cra_alignmask = 0, 753 .cra_module = THIS_MODULE, 754 .cra_init = mv_cesa_skcipher_cra_init, 755 .cra_exit = mv_cesa_skcipher_cra_exit, 756 }, 757}; 758 759static int mv_cesa_cbc_aes_op(struct skcipher_request *req, 760 struct mv_cesa_op_ctx *tmpl) 761{ 762 mv_cesa_update_op_cfg(tmpl, CESA_SA_DESC_CFG_CRYPTCM_CBC, 763 CESA_SA_DESC_CFG_CRYPTCM_MSK); 764 memcpy(tmpl->ctx.skcipher.iv, req->iv, AES_BLOCK_SIZE); 765 766 return mv_cesa_aes_op(req, tmpl); 767} 768 769static int mv_cesa_cbc_aes_encrypt(struct skcipher_request *req) 770{ 771 struct mv_cesa_op_ctx tmpl; 772 773 mv_cesa_set_op_cfg(&tmpl, CESA_SA_DESC_CFG_DIR_ENC); 774 775 return mv_cesa_cbc_aes_op(req, &tmpl); 776} 777 778static int mv_cesa_cbc_aes_decrypt(struct skcipher_request *req) 779{ 780 struct mv_cesa_op_ctx tmpl; 781 782 mv_cesa_set_op_cfg(&tmpl, CESA_SA_DESC_CFG_DIR_DEC); 783 784 return mv_cesa_cbc_aes_op(req, &tmpl); 785} 786 787struct skcipher_alg mv_cesa_cbc_aes_alg = { 788 .setkey = mv_cesa_aes_setkey, 789 .encrypt = mv_cesa_cbc_aes_encrypt, 790 .decrypt = mv_cesa_cbc_aes_decrypt, 791 .min_keysize = AES_MIN_KEY_SIZE, 792 .max_keysize = AES_MAX_KEY_SIZE, 793 .ivsize = AES_BLOCK_SIZE, 794 .base = { 795 .cra_name = "cbc(aes)", 796 .cra_driver_name = "mv-cbc-aes", 797 .cra_priority = 300, 798 .cra_flags = CRYPTO_ALG_KERN_DRIVER_ONLY | CRYPTO_ALG_ASYNC | 799 CRYPTO_ALG_ALLOCATES_MEMORY, 800 .cra_blocksize = AES_BLOCK_SIZE, 801 .cra_ctxsize = sizeof(struct mv_cesa_aes_ctx), 802 .cra_alignmask = 0, 803 .cra_module = THIS_MODULE, 804 .cra_init = mv_cesa_skcipher_cra_init, 805 .cra_exit = mv_cesa_skcipher_cra_exit, 806 }, 807}; 808