drivers/crypto/marvell/cipher.c

   1 /*
   2  * Cipher algorithms supported by the CESA: DES, 3DES and AES.
   3  *
   4  * Author: Boris Brezillon <boris.brezillon@free-electrons.com>
   5  * Author: Arnaud Ebalard <arno@natisbad.org>
   6  *
   7  * This work is based on an initial version written by
   8  * Sebastian Andrzej Siewior < sebastian at breakpoint dot cc >
   9  *
  10  * This program is free software; you can redistribute it and/or modify it
  11  * under the terms of the GNU General Public License version 2 as published
  12  * by the Free Software Foundation.
  13  */
  14
  15 #include <crypto/aes.h>
  16 #include <crypto/des.h>
  17
  18 #include "cesa.h"
  19
  20 struct mv_cesa_des_ctx {
  21         struct mv_cesa_ctx base;
  22         u8 key[DES_KEY_SIZE];
  23 };
  24
  25 struct mv_cesa_des3_ctx {
  26         struct mv_cesa_ctx base;
  27         u8 key[DES3_EDE_KEY_SIZE];
  28 };
  29
  30 struct mv_cesa_aes_ctx {
  31         struct mv_cesa_ctx base;
  32         struct crypto_aes_ctx aes;
  33 };
  34
  35 struct mv_cesa_skcipher_dma_iter {
  36         struct mv_cesa_dma_iter base;
  37         struct mv_cesa_sg_dma_iter src;
  38         struct mv_cesa_sg_dma_iter dst;
  39 };
  40
  41 static inline void
  42 mv_cesa_skcipher_req_iter_init(struct mv_cesa_skcipher_dma_iter *iter,
  43                                struct skcipher_request *req)
  44 {
  45         mv_cesa_req_dma_iter_init(&iter->base, req->cryptlen);
  46         mv_cesa_sg_dma_iter_init(&iter->src, req->src, DMA_TO_DEVICE);
  47         mv_cesa_sg_dma_iter_init(&iter->dst, req->dst, DMA_FROM_DEVICE);
  48 }
  49
  50 static inline bool
  51 mv_cesa_skcipher_req_iter_next_op(struct mv_cesa_skcipher_dma_iter *iter)
  52 {
  53         iter->src.op_offset = 0;
  54         iter->dst.op_offset = 0;
  55
  56         return mv_cesa_req_dma_iter_next_op(&iter->base);
  57 }
  58
  59 static inline void
  60 mv_cesa_skcipher_dma_cleanup(struct skcipher_request *req)
  61 {
  62         struct mv_cesa_skcipher_req *creq = skcipher_request_ctx(req);
  63
  64         if (req->dst != req->src) {
  65                 dma_unmap_sg(cesa_dev->dev, req->dst, creq->dst_nents,
  66                              DMA_FROM_DEVICE);
  67                 dma_unmap_sg(cesa_dev->dev, req->src, creq->src_nents,
  68                              DMA_TO_DEVICE);
  69         } else {
  70                 dma_unmap_sg(cesa_dev->dev, req->src, creq->src_nents,
  71                              DMA_BIDIRECTIONAL);
  72         }
  73         mv_cesa_dma_cleanup(&creq->base);
  74 }
  75
  76 static inline void mv_cesa_skcipher_cleanup(struct skcipher_request *req)
  77 {
  78         struct mv_cesa_skcipher_req *creq = skcipher_request_ctx(req);
  79
  80         if (mv_cesa_req_get_type(&creq->base) == CESA_DMA_REQ)
  81                 mv_cesa_skcipher_dma_cleanup(req);
  82 }
  83
  84 static void mv_cesa_skcipher_std_step(struct skcipher_request *req)
  85 {
  86         struct mv_cesa_skcipher_req *creq = skcipher_request_ctx(req);
  87         struct mv_cesa_skcipher_std_req *sreq = &creq->std;
  88         struct mv_cesa_engine *engine = creq->base.engine;
  89         size_t  len = min_t(size_t, req->cryptlen - sreq->offset,
  90                             CESA_SA_SRAM_PAYLOAD_SIZE);
  91
  92         mv_cesa_adjust_op(engine, &sreq->op);
  93         memcpy_toio(engine->sram, &sreq->op, sizeof(sreq->op));
  94
  95         len = sg_pcopy_to_buffer(req->src, creq->src_nents,
  96                                  engine->sram + CESA_SA_DATA_SRAM_OFFSET,
  97                                  len, sreq->offset);
  98
  99         sreq->size = len;
 100         mv_cesa_set_crypt_op_len(&sreq->op, len);
 101
 102         /* FIXME: only update enc_len field */
 103         if (!sreq->skip_ctx) {
 104                 memcpy_toio(engine->sram, &sreq->op, sizeof(sreq->op));
 105                 sreq->skip_ctx = true;
 106         } else {
 107                 memcpy_toio(engine->sram, &sreq->op, sizeof(sreq->op.desc));
 108         }
 109
 110         mv_cesa_set_int_mask(engine, CESA_SA_INT_ACCEL0_DONE);
 111         writel_relaxed(CESA_SA_CFG_PARA_DIS, engine->regs + CESA_SA_CFG);
 112         BUG_ON(readl(engine->regs + CESA_SA_CMD) &
 113                CESA_SA_CMD_EN_CESA_SA_ACCL0);
 114         writel(CESA_SA_CMD_EN_CESA_SA_ACCL0, engine->regs + CESA_SA_CMD);
 115 }
 116
 117 static int mv_cesa_skcipher_std_process(struct skcipher_request *req,
 118                                         u32 status)
 119 {
 120         struct mv_cesa_skcipher_req *creq = skcipher_request_ctx(req);
 121         struct mv_cesa_skcipher_std_req *sreq = &creq->std;
 122         struct mv_cesa_engine *engine = creq->base.engine;
 123         size_t len;
 124
 125         len = sg_pcopy_from_buffer(req->dst, creq->dst_nents,
 126                                    engine->sram + CESA_SA_DATA_SRAM_OFFSET,
 127                                    sreq->size, sreq->offset);
 128
 129         sreq->offset += len;
 130         if (sreq->offset < req->cryptlen)
 131                 return -EINPROGRESS;
 132
 133         return 0;
 134 }
 135
 136 static int mv_cesa_skcipher_process(struct crypto_async_request *req,
 137                                     u32 status)
 138 {
 139         struct skcipher_request *skreq = skcipher_request_cast(req);
 140         struct mv_cesa_skcipher_req *creq = skcipher_request_ctx(skreq);
 141         struct mv_cesa_req *basereq = &creq->base;
 142
 143         if (mv_cesa_req_get_type(basereq) == CESA_STD_REQ)
 144                 return mv_cesa_skcipher_std_process(skreq, status);
 145
 146         return mv_cesa_dma_process(basereq, status);
 147 }
 148
 149 static void mv_cesa_skcipher_step(struct crypto_async_request *req)
 150 {
 151         struct skcipher_request *skreq = skcipher_request_cast(req);
 152         struct mv_cesa_skcipher_req *creq = skcipher_request_ctx(skreq);
 153
 154         if (mv_cesa_req_get_type(&creq->base) == CESA_DMA_REQ)
 155                 mv_cesa_dma_step(&creq->base);
 156         else
 157                 mv_cesa_skcipher_std_step(skreq);
 158 }
 159
 160 static inline void
 161 mv_cesa_skcipher_dma_prepare(struct skcipher_request *req)
 162 {
 163         struct mv_cesa_skcipher_req *creq = skcipher_request_ctx(req);
 164         struct mv_cesa_req *basereq = &creq->base;
 165
 166         mv_cesa_dma_prepare(basereq, basereq->engine);
 167 }
 168
 169 static inline void
 170 mv_cesa_skcipher_std_prepare(struct skcipher_request *req)
 171 {
 172         struct mv_cesa_skcipher_req *creq = skcipher_request_ctx(req);
 173         struct mv_cesa_skcipher_std_req *sreq = &creq->std;
 174
 175         sreq->size = 0;
 176         sreq->offset = 0;
 177 }
 178
 179 static inline void mv_cesa_skcipher_prepare(struct crypto_async_request *req,
 180                                             struct mv_cesa_engine *engine)
 181 {
 182         struct skcipher_request *skreq = skcipher_request_cast(req);
 183         struct mv_cesa_skcipher_req *creq = skcipher_request_ctx(skreq);
 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
 192 static inline void
 193 mv_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
 200 static void
 201 mv_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.blkcipher.iv,
 216                        ivsize);
 217         } else {
 218                 memcpy_fromio(skreq->iv,
 219                               engine->sram + CESA_SA_CRYPT_IV_SRAM_OFFSET,
 220                               ivsize);
 221         }
 222 }
 223
 224 static 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
 231 static 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
 238 static 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
 250 static 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 = crypto_aes_expand_key(&ctx->aes, key, len);
 261         if (ret) {
 262                 crypto_skcipher_set_flags(cipher, CRYPTO_TFM_RES_BAD_KEY_LEN);
 263                 return ret;
 264         }
 265
 266         remaining = (ctx->aes.key_length - 16) / 4;
 267         offset = ctx->aes.key_length + 24 - remaining;
 268         for (i = 0; i < remaining; i++)
 269                 ctx->aes.key_dec[4 + i] =
 270                         cpu_to_le32(ctx->aes.key_enc[offset + i]);
 271
 272         return 0;
 273 }
 274
 275 static int mv_cesa_des_setkey(struct crypto_skcipher *cipher, const u8 *key,
 276                               unsigned int len)
 277 {
 278         struct crypto_tfm *tfm = crypto_skcipher_tfm(cipher);
 279         struct mv_cesa_des_ctx *ctx = crypto_tfm_ctx(tfm);
 280         u32 tmp[DES_EXPKEY_WORDS];
 281         int ret;
 282
 283         if (len != DES_KEY_SIZE) {
 284                 crypto_skcipher_set_flags(cipher, CRYPTO_TFM_RES_BAD_KEY_LEN);
 285                 return -EINVAL;
 286         }
 287
 288         ret = des_ekey(tmp, key);
 289         if (!ret && (tfm->crt_flags & CRYPTO_TFM_REQ_WEAK_KEY)) {
 290                 tfm->crt_flags |= CRYPTO_TFM_RES_WEAK_KEY;
 291                 return -EINVAL;
 292         }
 293
 294         memcpy(ctx->key, key, DES_KEY_SIZE);
 295
 296         return 0;
 297 }
 298
 299 static int mv_cesa_des3_ede_setkey(struct crypto_skcipher *cipher,
 300                                    const u8 *key, unsigned int len)
 301 {
 302         struct crypto_tfm *tfm = crypto_skcipher_tfm(cipher);
 303         struct mv_cesa_des_ctx *ctx = crypto_tfm_ctx(tfm);
 304
 305         if (len != DES3_EDE_KEY_SIZE) {
 306                 crypto_skcipher_set_flags(cipher, CRYPTO_TFM_RES_BAD_KEY_LEN);
 307                 return -EINVAL;
 308         }
 309
 310         memcpy(ctx->key, key, DES3_EDE_KEY_SIZE);
 311
 312         return 0;
 313 }
 314
 315 static int mv_cesa_skcipher_dma_req_init(struct skcipher_request *req,
 316                                          const struct mv_cesa_op_ctx *op_templ)
 317 {
 318         struct mv_cesa_skcipher_req *creq = skcipher_request_ctx(req);
 319         gfp_t flags = (req->base.flags & CRYPTO_TFM_REQ_MAY_SLEEP) ?
 320                       GFP_KERNEL : GFP_ATOMIC;
 321         struct mv_cesa_req *basereq = &creq->base;
 322         struct mv_cesa_skcipher_dma_iter iter;
 323         bool skip_ctx = false;
 324         int ret;
 325         unsigned int ivsize;
 326
 327         basereq->chain.first = NULL;
 328         basereq->chain.last = NULL;
 329
 330         if (req->src != req->dst) {
 331                 ret = dma_map_sg(cesa_dev->dev, req->src, creq->src_nents,
 332                                  DMA_TO_DEVICE);
 333                 if (!ret)
 334                         return -ENOMEM;
 335
 336                 ret = dma_map_sg(cesa_dev->dev, req->dst, creq->dst_nents,
 337                                  DMA_FROM_DEVICE);
 338                 if (!ret) {
 339                         ret = -ENOMEM;
 340                         goto err_unmap_src;
 341                 }
 342         } else {
 343                 ret = dma_map_sg(cesa_dev->dev, req->src, creq->src_nents,
 344                                  DMA_BIDIRECTIONAL);
 345                 if (!ret)
 346                         return -ENOMEM;
 347         }
 348
 349         mv_cesa_tdma_desc_iter_init(&basereq->chain);
 350         mv_cesa_skcipher_req_iter_init(&iter, req);
 351
 352         do {
 353                 struct mv_cesa_op_ctx *op;
 354
 355                 op = mv_cesa_dma_add_op(&basereq->chain, op_templ, skip_ctx, flags);
 356                 if (IS_ERR(op)) {
 357                         ret = PTR_ERR(op);
 358                         goto err_free_tdma;
 359                 }
 360                 skip_ctx = true;
 361
 362                 mv_cesa_set_crypt_op_len(op, iter.base.op_len);
 363
 364                 /* Add input transfers */
 365                 ret = mv_cesa_dma_add_op_transfers(&basereq->chain, &iter.base,
 366                                                    &iter.src, flags);
 367                 if (ret)
 368                         goto err_free_tdma;
 369
 370                 /* Add dummy desc to launch the crypto operation */
 371                 ret = mv_cesa_dma_add_dummy_launch(&basereq->chain, flags);
 372                 if (ret)
 373                         goto err_free_tdma;
 374
 375                 /* Add output transfers */
 376                 ret = mv_cesa_dma_add_op_transfers(&basereq->chain, &iter.base,
 377                                                    &iter.dst, flags);
 378                 if (ret)
 379                         goto err_free_tdma;
 380
 381         } while (mv_cesa_skcipher_req_iter_next_op(&iter));
 382
 383         /* Add output data for IV */
 384         ivsize = crypto_skcipher_ivsize(crypto_skcipher_reqtfm(req));
 385         ret = mv_cesa_dma_add_result_op(&basereq->chain, CESA_SA_CFG_SRAM_OFFSET,
 386                                     CESA_SA_DATA_SRAM_OFFSET,
 387                                     CESA_TDMA_SRC_IN_SRAM, flags);
 388
 389         if (ret)
 390                 goto err_free_tdma;
 391
 392         basereq->chain.last->flags |= CESA_TDMA_END_OF_REQ;
 393
 394         return 0;
 395
 396 err_free_tdma:
 397         mv_cesa_dma_cleanup(basereq);
 398         if (req->dst != req->src)
 399                 dma_unmap_sg(cesa_dev->dev, req->dst, creq->dst_nents,
 400                              DMA_FROM_DEVICE);
 401
 402 err_unmap_src:
 403         dma_unmap_sg(cesa_dev->dev, req->src, creq->src_nents,
 404                      req->dst != req->src ? DMA_TO_DEVICE : DMA_BIDIRECTIONAL);
 405
 406         return ret;
 407 }
 408
 409 static inline int
 410 mv_cesa_skcipher_std_req_init(struct skcipher_request *req,
 411                               const struct mv_cesa_op_ctx *op_templ)
 412 {
 413         struct mv_cesa_skcipher_req *creq = skcipher_request_ctx(req);
 414         struct mv_cesa_skcipher_std_req *sreq = &creq->std;
 415         struct mv_cesa_req *basereq = &creq->base;
 416
 417         sreq->op = *op_templ;
 418         sreq->skip_ctx = false;
 419         basereq->chain.first = NULL;
 420         basereq->chain.last = NULL;
 421
 422         return 0;
 423 }
 424
 425 static int mv_cesa_skcipher_req_init(struct skcipher_request *req,
 426                                      struct mv_cesa_op_ctx *tmpl)
 427 {
 428         struct mv_cesa_skcipher_req *creq = skcipher_request_ctx(req);
 429         struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req);
 430         unsigned int blksize = crypto_skcipher_blocksize(tfm);
 431         int ret;
 432
 433         if (!IS_ALIGNED(req->cryptlen, blksize))
 434                 return -EINVAL;
 435
 436         creq->src_nents = sg_nents_for_len(req->src, req->cryptlen);
 437         if (creq->src_nents < 0) {
 438                 dev_err(cesa_dev->dev, "Invalid number of src SG");
 439                 return creq->src_nents;
 440         }
 441         creq->dst_nents = sg_nents_for_len(req->dst, req->cryptlen);
 442         if (creq->dst_nents < 0) {
 443                 dev_err(cesa_dev->dev, "Invalid number of dst SG");
 444                 return creq->dst_nents;
 445         }
 446
 447         mv_cesa_update_op_cfg(tmpl, CESA_SA_DESC_CFG_OP_CRYPT_ONLY,
 448                               CESA_SA_DESC_CFG_OP_MSK);
 449
 450         if (cesa_dev->caps->has_tdma)
 451                 ret = mv_cesa_skcipher_dma_req_init(req, tmpl);
 452         else
 453                 ret = mv_cesa_skcipher_std_req_init(req, tmpl);
 454
 455         return ret;
 456 }
 457
 458 static int mv_cesa_skcipher_queue_req(struct skcipher_request *req,
 459                                       struct mv_cesa_op_ctx *tmpl)
 460 {
 461         int ret;
 462         struct mv_cesa_skcipher_req *creq = skcipher_request_ctx(req);
 463         struct mv_cesa_engine *engine;
 464
 465         ret = mv_cesa_skcipher_req_init(req, tmpl);
 466         if (ret)
 467                 return ret;
 468
 469         engine = mv_cesa_select_engine(req->cryptlen);
 470         mv_cesa_skcipher_prepare(&req->base, engine);
 471
 472         ret = mv_cesa_queue_req(&req->base, &creq->base);
 473
 474         if (mv_cesa_req_needs_cleanup(&req->base, ret))
 475                 mv_cesa_skcipher_cleanup(req);
 476
 477         return ret;
 478 }
 479
 480 static int mv_cesa_des_op(struct skcipher_request *req,
 481                           struct mv_cesa_op_ctx *tmpl)
 482 {
 483         struct mv_cesa_des_ctx *ctx = crypto_tfm_ctx(req->base.tfm);
 484
 485         mv_cesa_update_op_cfg(tmpl, CESA_SA_DESC_CFG_CRYPTM_DES,
 486                               CESA_SA_DESC_CFG_CRYPTM_MSK);
 487
 488         memcpy(tmpl->ctx.blkcipher.key, ctx->key, DES_KEY_SIZE);
 489
 490         return mv_cesa_skcipher_queue_req(req, tmpl);
 491 }
 492
 493 static int mv_cesa_ecb_des_encrypt(struct skcipher_request *req)
 494 {
 495         struct mv_cesa_op_ctx tmpl;
 496
 497         mv_cesa_set_op_cfg(&tmpl,
 498                            CESA_SA_DESC_CFG_CRYPTCM_ECB |
 499                            CESA_SA_DESC_CFG_DIR_ENC);
 500
 501         return mv_cesa_des_op(req, &tmpl);
 502 }
 503
 504 static int mv_cesa_ecb_des_decrypt(struct skcipher_request *req)
 505 {
 506         struct mv_cesa_op_ctx tmpl;
 507
 508         mv_cesa_set_op_cfg(&tmpl,
 509                            CESA_SA_DESC_CFG_CRYPTCM_ECB |
 510                            CESA_SA_DESC_CFG_DIR_DEC);
 511
 512         return mv_cesa_des_op(req, &tmpl);
 513 }
 514
 515 struct skcipher_alg mv_cesa_ecb_des_alg = {
 516         .setkey = mv_cesa_des_setkey,
 517         .encrypt = mv_cesa_ecb_des_encrypt,
 518         .decrypt = mv_cesa_ecb_des_decrypt,
 519         .min_keysize = DES_KEY_SIZE,
 520         .max_keysize = DES_KEY_SIZE,
 521         .base = {
 522                 .cra_name = "ecb(des)",
 523                 .cra_driver_name = "mv-ecb-des",
 524                 .cra_priority = 300,
 525                 .cra_flags = CRYPTO_ALG_KERN_DRIVER_ONLY | CRYPTO_ALG_ASYNC,
 526                 .cra_blocksize = DES_BLOCK_SIZE,
 527                 .cra_ctxsize = sizeof(struct mv_cesa_des_ctx),
 528                 .cra_alignmask = 0,
 529                 .cra_module = THIS_MODULE,
 530                 .cra_init = mv_cesa_skcipher_cra_init,
 531                 .cra_exit = mv_cesa_skcipher_cra_exit,
 532         },
 533 };
 534
 535 static int mv_cesa_cbc_des_op(struct skcipher_request *req,
 536                               struct mv_cesa_op_ctx *tmpl)
 537 {
 538         mv_cesa_update_op_cfg(tmpl, CESA_SA_DESC_CFG_CRYPTCM_CBC,
 539                               CESA_SA_DESC_CFG_CRYPTCM_MSK);
 540
 541         memcpy(tmpl->ctx.blkcipher.iv, req->iv, DES_BLOCK_SIZE);
 542
 543         return mv_cesa_des_op(req, tmpl);
 544 }
 545
 546 static int mv_cesa_cbc_des_encrypt(struct skcipher_request *req)
 547 {
 548         struct mv_cesa_op_ctx tmpl;
 549
 550         mv_cesa_set_op_cfg(&tmpl, CESA_SA_DESC_CFG_DIR_ENC);
 551
 552         return mv_cesa_cbc_des_op(req, &tmpl);
 553 }
 554
 555 static int mv_cesa_cbc_des_decrypt(struct skcipher_request *req)
 556 {
 557         struct mv_cesa_op_ctx tmpl;
 558
 559         mv_cesa_set_op_cfg(&tmpl, CESA_SA_DESC_CFG_DIR_DEC);
 560
 561         return mv_cesa_cbc_des_op(req, &tmpl);
 562 }
 563
 564 struct skcipher_alg mv_cesa_cbc_des_alg = {
 565         .setkey = mv_cesa_des_setkey,
 566         .encrypt = mv_cesa_cbc_des_encrypt,
 567         .decrypt = mv_cesa_cbc_des_decrypt,
 568         .min_keysize = DES_KEY_SIZE,
 569         .max_keysize = DES_KEY_SIZE,
 570         .ivsize = DES_BLOCK_SIZE,
 571         .base = {
 572                 .cra_name = "cbc(des)",
 573                 .cra_driver_name = "mv-cbc-des",
 574                 .cra_priority = 300,
 575                 .cra_flags = CRYPTO_ALG_KERN_DRIVER_ONLY | CRYPTO_ALG_ASYNC,
 576                 .cra_blocksize = DES_BLOCK_SIZE,
 577                 .cra_ctxsize = sizeof(struct mv_cesa_des_ctx),
 578                 .cra_alignmask = 0,
 579                 .cra_module = THIS_MODULE,
 580                 .cra_init = mv_cesa_skcipher_cra_init,
 581                 .cra_exit = mv_cesa_skcipher_cra_exit,
 582         },
 583 };
 584
 585 static int mv_cesa_des3_op(struct skcipher_request *req,
 586                            struct mv_cesa_op_ctx *tmpl)
 587 {
 588         struct mv_cesa_des3_ctx *ctx = crypto_tfm_ctx(req->base.tfm);
 589
 590         mv_cesa_update_op_cfg(tmpl, CESA_SA_DESC_CFG_CRYPTM_3DES,
 591                               CESA_SA_DESC_CFG_CRYPTM_MSK);
 592
 593         memcpy(tmpl->ctx.blkcipher.key, ctx->key, DES3_EDE_KEY_SIZE);
 594
 595         return mv_cesa_skcipher_queue_req(req, tmpl);
 596 }
 597
 598 static int mv_cesa_ecb_des3_ede_encrypt(struct skcipher_request *req)
 599 {
 600         struct mv_cesa_op_ctx tmpl;
 601
 602         mv_cesa_set_op_cfg(&tmpl,
 603                            CESA_SA_DESC_CFG_CRYPTCM_ECB |
 604                            CESA_SA_DESC_CFG_3DES_EDE |
 605                            CESA_SA_DESC_CFG_DIR_ENC);
 606
 607         return mv_cesa_des3_op(req, &tmpl);
 608 }
 609
 610 static int mv_cesa_ecb_des3_ede_decrypt(struct skcipher_request *req)
 611 {
 612         struct mv_cesa_op_ctx tmpl;
 613
 614         mv_cesa_set_op_cfg(&tmpl,
 615                            CESA_SA_DESC_CFG_CRYPTCM_ECB |
 616                            CESA_SA_DESC_CFG_3DES_EDE |
 617                            CESA_SA_DESC_CFG_DIR_DEC);
 618
 619         return mv_cesa_des3_op(req, &tmpl);
 620 }
 621
 622 struct skcipher_alg mv_cesa_ecb_des3_ede_alg = {
 623         .setkey = mv_cesa_des3_ede_setkey,
 624         .encrypt = mv_cesa_ecb_des3_ede_encrypt,
 625         .decrypt = mv_cesa_ecb_des3_ede_decrypt,
 626         .min_keysize = DES3_EDE_KEY_SIZE,
 627         .max_keysize = DES3_EDE_KEY_SIZE,
 628         .ivsize = DES3_EDE_BLOCK_SIZE,
 629         .base = {
 630                 .cra_name = "ecb(des3_ede)",
 631                 .cra_driver_name = "mv-ecb-des3-ede",
 632                 .cra_priority = 300,
 633                 .cra_flags = CRYPTO_ALG_KERN_DRIVER_ONLY | CRYPTO_ALG_ASYNC,
 634                 .cra_blocksize = DES3_EDE_BLOCK_SIZE,
 635                 .cra_ctxsize = sizeof(struct mv_cesa_des3_ctx),
 636                 .cra_alignmask = 0,
 637                 .cra_module = THIS_MODULE,
 638                 .cra_init = mv_cesa_skcipher_cra_init,
 639                 .cra_exit = mv_cesa_skcipher_cra_exit,
 640         },
 641 };
 642
 643 static int mv_cesa_cbc_des3_op(struct skcipher_request *req,
 644                                struct mv_cesa_op_ctx *tmpl)
 645 {
 646         memcpy(tmpl->ctx.blkcipher.iv, req->iv, DES3_EDE_BLOCK_SIZE);
 647
 648         return mv_cesa_des3_op(req, tmpl);
 649 }
 650
 651 static int mv_cesa_cbc_des3_ede_encrypt(struct skcipher_request *req)
 652 {
 653         struct mv_cesa_op_ctx tmpl;
 654
 655         mv_cesa_set_op_cfg(&tmpl,
 656                            CESA_SA_DESC_CFG_CRYPTCM_CBC |
 657                            CESA_SA_DESC_CFG_3DES_EDE |
 658                            CESA_SA_DESC_CFG_DIR_ENC);
 659
 660         return mv_cesa_cbc_des3_op(req, &tmpl);
 661 }
 662
 663 static int mv_cesa_cbc_des3_ede_decrypt(struct skcipher_request *req)
 664 {
 665         struct mv_cesa_op_ctx tmpl;
 666
 667         mv_cesa_set_op_cfg(&tmpl,
 668                            CESA_SA_DESC_CFG_CRYPTCM_CBC |
 669                            CESA_SA_DESC_CFG_3DES_EDE |
 670                            CESA_SA_DESC_CFG_DIR_DEC);
 671
 672         return mv_cesa_cbc_des3_op(req, &tmpl);
 673 }
 674
 675 struct skcipher_alg mv_cesa_cbc_des3_ede_alg = {
 676         .setkey = mv_cesa_des3_ede_setkey,
 677         .encrypt = mv_cesa_cbc_des3_ede_encrypt,
 678         .decrypt = mv_cesa_cbc_des3_ede_decrypt,
 679         .min_keysize = DES3_EDE_KEY_SIZE,
 680         .max_keysize = DES3_EDE_KEY_SIZE,
 681         .ivsize = DES3_EDE_BLOCK_SIZE,
 682         .base = {
 683                 .cra_name = "cbc(des3_ede)",
 684                 .cra_driver_name = "mv-cbc-des3-ede",
 685                 .cra_priority = 300,
 686                 .cra_flags = CRYPTO_ALG_KERN_DRIVER_ONLY | CRYPTO_ALG_ASYNC,
 687                 .cra_blocksize = DES3_EDE_BLOCK_SIZE,
 688                 .cra_ctxsize = sizeof(struct mv_cesa_des3_ctx),
 689                 .cra_alignmask = 0,
 690                 .cra_module = THIS_MODULE,
 691                 .cra_init = mv_cesa_skcipher_cra_init,
 692                 .cra_exit = mv_cesa_skcipher_cra_exit,
 693         },
 694 };
 695
 696 static int mv_cesa_aes_op(struct skcipher_request *req,
 697                           struct mv_cesa_op_ctx *tmpl)
 698 {
 699         struct mv_cesa_aes_ctx *ctx = crypto_tfm_ctx(req->base.tfm);
 700         int i;
 701         u32 *key;
 702         u32 cfg;
 703
 704         cfg = CESA_SA_DESC_CFG_CRYPTM_AES;
 705
 706         if (mv_cesa_get_op_cfg(tmpl) & CESA_SA_DESC_CFG_DIR_DEC)
 707                 key = ctx->aes.key_dec;
 708         else
 709                 key = ctx->aes.key_enc;
 710
 711         for (i = 0; i < ctx->aes.key_length / sizeof(u32); i++)
 712                 tmpl->ctx.blkcipher.key[i] = cpu_to_le32(key[i]);
 713
 714         if (ctx->aes.key_length == 24)
 715                 cfg |= CESA_SA_DESC_CFG_AES_LEN_192;
 716         else if (ctx->aes.key_length == 32)
 717                 cfg |= CESA_SA_DESC_CFG_AES_LEN_256;
 718
 719         mv_cesa_update_op_cfg(tmpl, cfg,
 720                               CESA_SA_DESC_CFG_CRYPTM_MSK |
 721                               CESA_SA_DESC_CFG_AES_LEN_MSK);
 722
 723         return mv_cesa_skcipher_queue_req(req, tmpl);
 724 }
 725
 726 static int mv_cesa_ecb_aes_encrypt(struct skcipher_request *req)
 727 {
 728         struct mv_cesa_op_ctx tmpl;
 729
 730         mv_cesa_set_op_cfg(&tmpl,
 731                            CESA_SA_DESC_CFG_CRYPTCM_ECB |
 732                            CESA_SA_DESC_CFG_DIR_ENC);
 733
 734         return mv_cesa_aes_op(req, &tmpl);
 735 }
 736
 737 static int mv_cesa_ecb_aes_decrypt(struct skcipher_request *req)
 738 {
 739         struct mv_cesa_op_ctx tmpl;
 740
 741         mv_cesa_set_op_cfg(&tmpl,
 742                            CESA_SA_DESC_CFG_CRYPTCM_ECB |
 743                            CESA_SA_DESC_CFG_DIR_DEC);
 744
 745         return mv_cesa_aes_op(req, &tmpl);
 746 }
 747
 748 struct skcipher_alg mv_cesa_ecb_aes_alg = {
 749         .setkey = mv_cesa_aes_setkey,
 750         .encrypt = mv_cesa_ecb_aes_encrypt,
 751         .decrypt = mv_cesa_ecb_aes_decrypt,
 752         .min_keysize = AES_MIN_KEY_SIZE,
 753         .max_keysize = AES_MAX_KEY_SIZE,
 754         .base = {
 755                 .cra_name = "ecb(aes)",
 756                 .cra_driver_name = "mv-ecb-aes",
 757                 .cra_priority = 300,
 758                 .cra_flags = CRYPTO_ALG_KERN_DRIVER_ONLY | CRYPTO_ALG_ASYNC,
 759                 .cra_blocksize = AES_BLOCK_SIZE,
 760                 .cra_ctxsize = sizeof(struct mv_cesa_aes_ctx),
 761                 .cra_alignmask = 0,
 762                 .cra_module = THIS_MODULE,
 763                 .cra_init = mv_cesa_skcipher_cra_init,
 764                 .cra_exit = mv_cesa_skcipher_cra_exit,
 765         },
 766 };
 767
 768 static int mv_cesa_cbc_aes_op(struct skcipher_request *req,
 769                               struct mv_cesa_op_ctx *tmpl)
 770 {
 771         mv_cesa_update_op_cfg(tmpl, CESA_SA_DESC_CFG_CRYPTCM_CBC,
 772                               CESA_SA_DESC_CFG_CRYPTCM_MSK);
 773         memcpy(tmpl->ctx.blkcipher.iv, req->iv, AES_BLOCK_SIZE);
 774
 775         return mv_cesa_aes_op(req, tmpl);
 776 }
 777
 778 static int mv_cesa_cbc_aes_encrypt(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_ENC);
 783
 784         return mv_cesa_cbc_aes_op(req, &tmpl);
 785 }
 786
 787 static int mv_cesa_cbc_aes_decrypt(struct skcipher_request *req)
 788 {
 789         struct mv_cesa_op_ctx tmpl;
 790
 791         mv_cesa_set_op_cfg(&tmpl, CESA_SA_DESC_CFG_DIR_DEC);
 792
 793         return mv_cesa_cbc_aes_op(req, &tmpl);
 794 }
 795
 796 struct skcipher_alg mv_cesa_cbc_aes_alg = {
 797         .setkey = mv_cesa_aes_setkey,
 798         .encrypt = mv_cesa_cbc_aes_encrypt,
 799         .decrypt = mv_cesa_cbc_aes_decrypt,
 800         .min_keysize = AES_MIN_KEY_SIZE,
 801         .max_keysize = AES_MAX_KEY_SIZE,
 802         .ivsize = AES_BLOCK_SIZE,
 803         .base = {
 804                 .cra_name = "cbc(aes)",
 805                 .cra_driver_name = "mv-cbc-aes",
 806                 .cra_priority = 300,
 807                 .cra_flags = CRYPTO_ALG_KERN_DRIVER_ONLY | CRYPTO_ALG_ASYNC,
 808                 .cra_blocksize = AES_BLOCK_SIZE,
 809                 .cra_ctxsize = sizeof(struct mv_cesa_aes_ctx),
 810                 .cra_alignmask = 0,
 811                 .cra_module = THIS_MODULE,
 812                 .cra_init = mv_cesa_skcipher_cra_init,
 813                 .cra_exit = mv_cesa_skcipher_cra_exit,
 814         },
 815 };