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_ablkcipher_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_ablkcipher_req_iter_init(struct mv_cesa_ablkcipher_dma_iter *iter,
  43                                  struct ablkcipher_request *req)
  44 {
  45         mv_cesa_req_dma_iter_init(&iter->base, req->nbytes);
  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_ablkcipher_req_iter_next_op(struct mv_cesa_ablkcipher_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_ablkcipher_dma_cleanup(struct ablkcipher_request *req)
  61 {
  62         struct mv_cesa_ablkcipher_req *creq = ablkcipher_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_ablkcipher_cleanup(struct ablkcipher_request *req)
  77 {
  78         struct mv_cesa_ablkcipher_req *creq = ablkcipher_request_ctx(req);
  79
  80         if (mv_cesa_req_get_type(&creq->base) == CESA_DMA_REQ)
  81                 mv_cesa_ablkcipher_dma_cleanup(req);
  82 }
  83
  84 static void mv_cesa_ablkcipher_std_step(struct ablkcipher_request *req)
  85 {
  86         struct mv_cesa_ablkcipher_req *creq = ablkcipher_request_ctx(req);
  87         struct mv_cesa_ablkcipher_std_req *sreq = &creq->std;
  88         struct mv_cesa_engine *engine = creq->base.engine;
  89         size_t  len = min_t(size_t, req->nbytes - 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_ablkcipher_std_process(struct ablkcipher_request *req,
 118                                           u32 status)
 119 {
 120         struct mv_cesa_ablkcipher_req *creq = ablkcipher_request_ctx(req);
 121         struct mv_cesa_ablkcipher_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->nbytes)
 131                 return -EINPROGRESS;
 132
 133         return 0;
 134 }
 135
 136 static int mv_cesa_ablkcipher_process(struct crypto_async_request *req,
 137                                       u32 status)
 138 {
 139         struct ablkcipher_request *ablkreq = ablkcipher_request_cast(req);
 140         struct mv_cesa_ablkcipher_req *creq = ablkcipher_request_ctx(ablkreq);
 141         struct mv_cesa_req *basereq = &creq->base;
 142
 143         if (mv_cesa_req_get_type(basereq) == CESA_STD_REQ)
 144                 return mv_cesa_ablkcipher_std_process(ablkreq, status);
 145
 146         return mv_cesa_dma_process(basereq, status);
 147 }
 148
 149 static void mv_cesa_ablkcipher_step(struct crypto_async_request *req)
 150 {
 151         struct ablkcipher_request *ablkreq = ablkcipher_request_cast(req);
 152         struct mv_cesa_ablkcipher_req *creq = ablkcipher_request_ctx(ablkreq);
 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_ablkcipher_std_step(ablkreq);
 158 }
 159
 160 static inline void
 161 mv_cesa_ablkcipher_dma_prepare(struct ablkcipher_request *req)
 162 {
 163         struct mv_cesa_ablkcipher_req *creq = ablkcipher_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_ablkcipher_std_prepare(struct ablkcipher_request *req)
 171 {
 172         struct mv_cesa_ablkcipher_req *creq = ablkcipher_request_ctx(req);
 173         struct mv_cesa_ablkcipher_std_req *sreq = &creq->std;
 174
 175         sreq->size = 0;
 176         sreq->offset = 0;
 177 }
 178
 179 static inline void mv_cesa_ablkcipher_prepare(struct crypto_async_request *req,
 180                                               struct mv_cesa_engine *engine)
 181 {
 182         struct ablkcipher_request *ablkreq = ablkcipher_request_cast(req);
 183         struct mv_cesa_ablkcipher_req *creq = ablkcipher_request_ctx(ablkreq);
 184         creq->base.engine = engine;
 185
 186         if (mv_cesa_req_get_type(&creq->base) == CESA_DMA_REQ)
 187                 mv_cesa_ablkcipher_dma_prepare(ablkreq);
 188         else
 189                 mv_cesa_ablkcipher_std_prepare(ablkreq);
 190 }
 191
 192 static inline void
 193 mv_cesa_ablkcipher_req_cleanup(struct crypto_async_request *req)
 194 {
 195         struct ablkcipher_request *ablkreq = ablkcipher_request_cast(req);
 196
 197         mv_cesa_ablkcipher_cleanup(ablkreq);
 198 }
 199
 200 static void
 201 mv_cesa_ablkcipher_complete(struct crypto_async_request *req)
 202 {
 203         struct ablkcipher_request *ablkreq = ablkcipher_request_cast(req);
 204         struct mv_cesa_ablkcipher_req *creq = ablkcipher_request_ctx(ablkreq);
 205         struct mv_cesa_engine *engine = creq->base.engine;
 206         unsigned int ivsize;
 207
 208         atomic_sub(ablkreq->nbytes, &engine->load);
 209         ivsize = crypto_ablkcipher_ivsize(crypto_ablkcipher_reqtfm(ablkreq));
 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(ablkreq->info, basereq->chain.last->data, ivsize);
 216         } else {
 217                 memcpy_fromio(ablkreq->info,
 218                               engine->sram + CESA_SA_CRYPT_IV_SRAM_OFFSET,
 219                               ivsize);
 220         }
 221 }
 222
 223 static const struct mv_cesa_req_ops mv_cesa_ablkcipher_req_ops = {
 224         .step = mv_cesa_ablkcipher_step,
 225         .process = mv_cesa_ablkcipher_process,
 226         .cleanup = mv_cesa_ablkcipher_req_cleanup,
 227         .complete = mv_cesa_ablkcipher_complete,
 228 };
 229
 230 static int mv_cesa_ablkcipher_cra_init(struct crypto_tfm *tfm)
 231 {
 232         struct mv_cesa_aes_ctx *ctx = crypto_tfm_ctx(tfm);
 233
 234         ctx->base.ops = &mv_cesa_ablkcipher_req_ops;
 235
 236         tfm->crt_ablkcipher.reqsize = sizeof(struct mv_cesa_ablkcipher_req);
 237
 238         return 0;
 239 }
 240
 241 static int mv_cesa_aes_setkey(struct crypto_ablkcipher *cipher, const u8 *key,
 242                               unsigned int len)
 243 {
 244         struct crypto_tfm *tfm = crypto_ablkcipher_tfm(cipher);
 245         struct mv_cesa_aes_ctx *ctx = crypto_tfm_ctx(tfm);
 246         int remaining;
 247         int offset;
 248         int ret;
 249         int i;
 250
 251         ret = crypto_aes_expand_key(&ctx->aes, key, len);
 252         if (ret) {
 253                 crypto_ablkcipher_set_flags(cipher, CRYPTO_TFM_RES_BAD_KEY_LEN);
 254                 return ret;
 255         }
 256
 257         remaining = (ctx->aes.key_length - 16) / 4;
 258         offset = ctx->aes.key_length + 24 - remaining;
 259         for (i = 0; i < remaining; i++)
 260                 ctx->aes.key_dec[4 + i] =
 261                         cpu_to_le32(ctx->aes.key_enc[offset + i]);
 262
 263         return 0;
 264 }
 265
 266 static int mv_cesa_des_setkey(struct crypto_ablkcipher *cipher, const u8 *key,
 267                               unsigned int len)
 268 {
 269         struct crypto_tfm *tfm = crypto_ablkcipher_tfm(cipher);
 270         struct mv_cesa_des_ctx *ctx = crypto_tfm_ctx(tfm);
 271         u32 tmp[DES_EXPKEY_WORDS];
 272         int ret;
 273
 274         if (len != DES_KEY_SIZE) {
 275                 crypto_ablkcipher_set_flags(cipher, CRYPTO_TFM_RES_BAD_KEY_LEN);
 276                 return -EINVAL;
 277         }
 278
 279         ret = des_ekey(tmp, key);
 280         if (!ret && (tfm->crt_flags & CRYPTO_TFM_REQ_WEAK_KEY)) {
 281                 tfm->crt_flags |= CRYPTO_TFM_RES_WEAK_KEY;
 282                 return -EINVAL;
 283         }
 284
 285         memcpy(ctx->key, key, DES_KEY_SIZE);
 286
 287         return 0;
 288 }
 289
 290 static int mv_cesa_des3_ede_setkey(struct crypto_ablkcipher *cipher,
 291                                    const u8 *key, unsigned int len)
 292 {
 293         struct crypto_tfm *tfm = crypto_ablkcipher_tfm(cipher);
 294         struct mv_cesa_des_ctx *ctx = crypto_tfm_ctx(tfm);
 295
 296         if (len != DES3_EDE_KEY_SIZE) {
 297                 crypto_ablkcipher_set_flags(cipher, CRYPTO_TFM_RES_BAD_KEY_LEN);
 298                 return -EINVAL;
 299         }
 300
 301         memcpy(ctx->key, key, DES3_EDE_KEY_SIZE);
 302
 303         return 0;
 304 }
 305
 306 static int mv_cesa_ablkcipher_dma_req_init(struct ablkcipher_request *req,
 307                                 const struct mv_cesa_op_ctx *op_templ)
 308 {
 309         struct mv_cesa_ablkcipher_req *creq = ablkcipher_request_ctx(req);
 310         gfp_t flags = (req->base.flags & CRYPTO_TFM_REQ_MAY_SLEEP) ?
 311                       GFP_KERNEL : GFP_ATOMIC;
 312         struct mv_cesa_req *basereq = &creq->base;
 313         struct mv_cesa_ablkcipher_dma_iter iter;
 314         bool skip_ctx = false;
 315         int ret;
 316         unsigned int ivsize;
 317
 318         basereq->chain.first = NULL;
 319         basereq->chain.last = NULL;
 320
 321         if (req->src != req->dst) {
 322                 ret = dma_map_sg(cesa_dev->dev, req->src, creq->src_nents,
 323                                  DMA_TO_DEVICE);
 324                 if (!ret)
 325                         return -ENOMEM;
 326
 327                 ret = dma_map_sg(cesa_dev->dev, req->dst, creq->dst_nents,
 328                                  DMA_FROM_DEVICE);
 329                 if (!ret) {
 330                         ret = -ENOMEM;
 331                         goto err_unmap_src;
 332                 }
 333         } else {
 334                 ret = dma_map_sg(cesa_dev->dev, req->src, creq->src_nents,
 335                                  DMA_BIDIRECTIONAL);
 336                 if (!ret)
 337                         return -ENOMEM;
 338         }
 339
 340         mv_cesa_tdma_desc_iter_init(&basereq->chain);
 341         mv_cesa_ablkcipher_req_iter_init(&iter, req);
 342
 343         do {
 344                 struct mv_cesa_op_ctx *op;
 345
 346                 op = mv_cesa_dma_add_op(&basereq->chain, op_templ, skip_ctx, flags);
 347                 if (IS_ERR(op)) {
 348                         ret = PTR_ERR(op);
 349                         goto err_free_tdma;
 350                 }
 351                 skip_ctx = true;
 352
 353                 mv_cesa_set_crypt_op_len(op, iter.base.op_len);
 354
 355                 /* Add input transfers */
 356                 ret = mv_cesa_dma_add_op_transfers(&basereq->chain, &iter.base,
 357                                                    &iter.src, flags);
 358                 if (ret)
 359                         goto err_free_tdma;
 360
 361                 /* Add dummy desc to launch the crypto operation */
 362                 ret = mv_cesa_dma_add_dummy_launch(&basereq->chain, flags);
 363                 if (ret)
 364                         goto err_free_tdma;
 365
 366                 /* Add output transfers */
 367                 ret = mv_cesa_dma_add_op_transfers(&basereq->chain, &iter.base,
 368                                                    &iter.dst, flags);
 369                 if (ret)
 370                         goto err_free_tdma;
 371
 372         } while (mv_cesa_ablkcipher_req_iter_next_op(&iter));
 373
 374         /* Add output data for IV */
 375         ivsize = crypto_ablkcipher_ivsize(crypto_ablkcipher_reqtfm(req));
 376         ret = mv_cesa_dma_add_iv_op(&basereq->chain, CESA_SA_CRYPT_IV_SRAM_OFFSET,
 377                                     ivsize, CESA_TDMA_SRC_IN_SRAM, flags);
 378
 379         if (ret)
 380                 goto err_free_tdma;
 381
 382         basereq->chain.last->flags |= CESA_TDMA_END_OF_REQ;
 383
 384         return 0;
 385
 386 err_free_tdma:
 387         mv_cesa_dma_cleanup(basereq);
 388         if (req->dst != req->src)
 389                 dma_unmap_sg(cesa_dev->dev, req->dst, creq->dst_nents,
 390                              DMA_FROM_DEVICE);
 391
 392 err_unmap_src:
 393         dma_unmap_sg(cesa_dev->dev, req->src, creq->src_nents,
 394                      req->dst != req->src ? DMA_TO_DEVICE : DMA_BIDIRECTIONAL);
 395
 396         return ret;
 397 }
 398
 399 static inline int
 400 mv_cesa_ablkcipher_std_req_init(struct ablkcipher_request *req,
 401                                 const struct mv_cesa_op_ctx *op_templ)
 402 {
 403         struct mv_cesa_ablkcipher_req *creq = ablkcipher_request_ctx(req);
 404         struct mv_cesa_ablkcipher_std_req *sreq = &creq->std;
 405         struct mv_cesa_req *basereq = &creq->base;
 406
 407         sreq->op = *op_templ;
 408         sreq->skip_ctx = false;
 409         basereq->chain.first = NULL;
 410         basereq->chain.last = NULL;
 411
 412         return 0;
 413 }
 414
 415 static int mv_cesa_ablkcipher_req_init(struct ablkcipher_request *req,
 416                                        struct mv_cesa_op_ctx *tmpl)
 417 {
 418         struct mv_cesa_ablkcipher_req *creq = ablkcipher_request_ctx(req);
 419         struct crypto_ablkcipher *tfm = crypto_ablkcipher_reqtfm(req);
 420         unsigned int blksize = crypto_ablkcipher_blocksize(tfm);
 421         int ret;
 422
 423         if (!IS_ALIGNED(req->nbytes, blksize))
 424                 return -EINVAL;
 425
 426         creq->src_nents = sg_nents_for_len(req->src, req->nbytes);
 427         if (creq->src_nents < 0) {
 428                 dev_err(cesa_dev->dev, "Invalid number of src SG");
 429                 return creq->src_nents;
 430         }
 431         creq->dst_nents = sg_nents_for_len(req->dst, req->nbytes);
 432         if (creq->dst_nents < 0) {
 433                 dev_err(cesa_dev->dev, "Invalid number of dst SG");
 434                 return creq->dst_nents;
 435         }
 436
 437         mv_cesa_update_op_cfg(tmpl, CESA_SA_DESC_CFG_OP_CRYPT_ONLY,
 438                               CESA_SA_DESC_CFG_OP_MSK);
 439
 440         if (cesa_dev->caps->has_tdma)
 441                 ret = mv_cesa_ablkcipher_dma_req_init(req, tmpl);
 442         else
 443                 ret = mv_cesa_ablkcipher_std_req_init(req, tmpl);
 444
 445         return ret;
 446 }
 447
 448 static int mv_cesa_ablkcipher_queue_req(struct ablkcipher_request *req,
 449                                         struct mv_cesa_op_ctx *tmpl)
 450 {
 451         int ret;
 452         struct mv_cesa_ablkcipher_req *creq = ablkcipher_request_ctx(req);
 453         struct mv_cesa_engine *engine;
 454
 455         ret = mv_cesa_ablkcipher_req_init(req, tmpl);
 456         if (ret)
 457                 return ret;
 458
 459         engine = mv_cesa_select_engine(req->nbytes);
 460         mv_cesa_ablkcipher_prepare(&req->base, engine);
 461
 462         ret = mv_cesa_queue_req(&req->base, &creq->base);
 463
 464         if (mv_cesa_req_needs_cleanup(&req->base, ret))
 465                 mv_cesa_ablkcipher_cleanup(req);
 466
 467         return ret;
 468 }
 469
 470 static int mv_cesa_des_op(struct ablkcipher_request *req,
 471                           struct mv_cesa_op_ctx *tmpl)
 472 {
 473         struct mv_cesa_des_ctx *ctx = crypto_tfm_ctx(req->base.tfm);
 474
 475         mv_cesa_update_op_cfg(tmpl, CESA_SA_DESC_CFG_CRYPTM_DES,
 476                               CESA_SA_DESC_CFG_CRYPTM_MSK);
 477
 478         memcpy(tmpl->ctx.blkcipher.key, ctx->key, DES_KEY_SIZE);
 479
 480         return mv_cesa_ablkcipher_queue_req(req, tmpl);
 481 }
 482
 483 static int mv_cesa_ecb_des_encrypt(struct ablkcipher_request *req)
 484 {
 485         struct mv_cesa_op_ctx tmpl;
 486
 487         mv_cesa_set_op_cfg(&tmpl,
 488                            CESA_SA_DESC_CFG_CRYPTCM_ECB |
 489                            CESA_SA_DESC_CFG_DIR_ENC);
 490
 491         return mv_cesa_des_op(req, &tmpl);
 492 }
 493
 494 static int mv_cesa_ecb_des_decrypt(struct ablkcipher_request *req)
 495 {
 496         struct mv_cesa_op_ctx tmpl;
 497
 498         mv_cesa_set_op_cfg(&tmpl,
 499                            CESA_SA_DESC_CFG_CRYPTCM_ECB |
 500                            CESA_SA_DESC_CFG_DIR_DEC);
 501
 502         return mv_cesa_des_op(req, &tmpl);
 503 }
 504
 505 struct crypto_alg mv_cesa_ecb_des_alg = {
 506         .cra_name = "ecb(des)",
 507         .cra_driver_name = "mv-ecb-des",
 508         .cra_priority = 300,
 509         .cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER |
 510                      CRYPTO_ALG_KERN_DRIVER_ONLY | CRYPTO_ALG_ASYNC,
 511         .cra_blocksize = DES_BLOCK_SIZE,
 512         .cra_ctxsize = sizeof(struct mv_cesa_des_ctx),
 513         .cra_alignmask = 0,
 514         .cra_type = &crypto_ablkcipher_type,
 515         .cra_module = THIS_MODULE,
 516         .cra_init = mv_cesa_ablkcipher_cra_init,
 517         .cra_u = {
 518                 .ablkcipher = {
 519                         .min_keysize = DES_KEY_SIZE,
 520                         .max_keysize = DES_KEY_SIZE,
 521                         .setkey = mv_cesa_des_setkey,
 522                         .encrypt = mv_cesa_ecb_des_encrypt,
 523                         .decrypt = mv_cesa_ecb_des_decrypt,
 524                 },
 525         },
 526 };
 527
 528 static int mv_cesa_cbc_des_op(struct ablkcipher_request *req,
 529                               struct mv_cesa_op_ctx *tmpl)
 530 {
 531         mv_cesa_update_op_cfg(tmpl, CESA_SA_DESC_CFG_CRYPTCM_CBC,
 532                               CESA_SA_DESC_CFG_CRYPTCM_MSK);
 533
 534         memcpy(tmpl->ctx.blkcipher.iv, req->info, DES_BLOCK_SIZE);
 535
 536         return mv_cesa_des_op(req, tmpl);
 537 }
 538
 539 static int mv_cesa_cbc_des_encrypt(struct ablkcipher_request *req)
 540 {
 541         struct mv_cesa_op_ctx tmpl;
 542
 543         mv_cesa_set_op_cfg(&tmpl, CESA_SA_DESC_CFG_DIR_ENC);
 544
 545         return mv_cesa_cbc_des_op(req, &tmpl);
 546 }
 547
 548 static int mv_cesa_cbc_des_decrypt(struct ablkcipher_request *req)
 549 {
 550         struct mv_cesa_op_ctx tmpl;
 551
 552         mv_cesa_set_op_cfg(&tmpl, CESA_SA_DESC_CFG_DIR_DEC);
 553
 554         return mv_cesa_cbc_des_op(req, &tmpl);
 555 }
 556
 557 struct crypto_alg mv_cesa_cbc_des_alg = {
 558         .cra_name = "cbc(des)",
 559         .cra_driver_name = "mv-cbc-des",
 560         .cra_priority = 300,
 561         .cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER |
 562                      CRYPTO_ALG_KERN_DRIVER_ONLY | CRYPTO_ALG_ASYNC,
 563         .cra_blocksize = DES_BLOCK_SIZE,
 564         .cra_ctxsize = sizeof(struct mv_cesa_des_ctx),
 565         .cra_alignmask = 0,
 566         .cra_type = &crypto_ablkcipher_type,
 567         .cra_module = THIS_MODULE,
 568         .cra_init = mv_cesa_ablkcipher_cra_init,
 569         .cra_u = {
 570                 .ablkcipher = {
 571                         .min_keysize = DES_KEY_SIZE,
 572                         .max_keysize = DES_KEY_SIZE,
 573                         .ivsize      = DES_BLOCK_SIZE,
 574                         .setkey = mv_cesa_des_setkey,
 575                         .encrypt = mv_cesa_cbc_des_encrypt,
 576                         .decrypt = mv_cesa_cbc_des_decrypt,
 577                 },
 578         },
 579 };
 580
 581 static int mv_cesa_des3_op(struct ablkcipher_request *req,
 582                            struct mv_cesa_op_ctx *tmpl)
 583 {
 584         struct mv_cesa_des3_ctx *ctx = crypto_tfm_ctx(req->base.tfm);
 585
 586         mv_cesa_update_op_cfg(tmpl, CESA_SA_DESC_CFG_CRYPTM_3DES,
 587                               CESA_SA_DESC_CFG_CRYPTM_MSK);
 588
 589         memcpy(tmpl->ctx.blkcipher.key, ctx->key, DES3_EDE_KEY_SIZE);
 590
 591         return mv_cesa_ablkcipher_queue_req(req, tmpl);
 592 }
 593
 594 static int mv_cesa_ecb_des3_ede_encrypt(struct ablkcipher_request *req)
 595 {
 596         struct mv_cesa_op_ctx tmpl;
 597
 598         mv_cesa_set_op_cfg(&tmpl,
 599                            CESA_SA_DESC_CFG_CRYPTCM_ECB |
 600                            CESA_SA_DESC_CFG_3DES_EDE |
 601                            CESA_SA_DESC_CFG_DIR_ENC);
 602
 603         return mv_cesa_des3_op(req, &tmpl);
 604 }
 605
 606 static int mv_cesa_ecb_des3_ede_decrypt(struct ablkcipher_request *req)
 607 {
 608         struct mv_cesa_op_ctx tmpl;
 609
 610         mv_cesa_set_op_cfg(&tmpl,
 611                            CESA_SA_DESC_CFG_CRYPTCM_ECB |
 612                            CESA_SA_DESC_CFG_3DES_EDE |
 613                            CESA_SA_DESC_CFG_DIR_DEC);
 614
 615         return mv_cesa_des3_op(req, &tmpl);
 616 }
 617
 618 struct crypto_alg mv_cesa_ecb_des3_ede_alg = {
 619         .cra_name = "ecb(des3_ede)",
 620         .cra_driver_name = "mv-ecb-des3-ede",
 621         .cra_priority = 300,
 622         .cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER |
 623                      CRYPTO_ALG_KERN_DRIVER_ONLY | CRYPTO_ALG_ASYNC,
 624         .cra_blocksize = DES3_EDE_BLOCK_SIZE,
 625         .cra_ctxsize = sizeof(struct mv_cesa_des3_ctx),
 626         .cra_alignmask = 0,
 627         .cra_type = &crypto_ablkcipher_type,
 628         .cra_module = THIS_MODULE,
 629         .cra_init = mv_cesa_ablkcipher_cra_init,
 630         .cra_u = {
 631                 .ablkcipher = {
 632                         .min_keysize = DES3_EDE_KEY_SIZE,
 633                         .max_keysize = DES3_EDE_KEY_SIZE,
 634                         .ivsize      = DES3_EDE_BLOCK_SIZE,
 635                         .setkey = mv_cesa_des3_ede_setkey,
 636                         .encrypt = mv_cesa_ecb_des3_ede_encrypt,
 637                         .decrypt = mv_cesa_ecb_des3_ede_decrypt,
 638                 },
 639         },
 640 };
 641
 642 static int mv_cesa_cbc_des3_op(struct ablkcipher_request *req,
 643                                struct mv_cesa_op_ctx *tmpl)
 644 {
 645         memcpy(tmpl->ctx.blkcipher.iv, req->info, DES3_EDE_BLOCK_SIZE);
 646
 647         return mv_cesa_des3_op(req, tmpl);
 648 }
 649
 650 static int mv_cesa_cbc_des3_ede_encrypt(struct ablkcipher_request *req)
 651 {
 652         struct mv_cesa_op_ctx tmpl;
 653
 654         mv_cesa_set_op_cfg(&tmpl,
 655                            CESA_SA_DESC_CFG_CRYPTCM_CBC |
 656                            CESA_SA_DESC_CFG_3DES_EDE |
 657                            CESA_SA_DESC_CFG_DIR_ENC);
 658
 659         return mv_cesa_cbc_des3_op(req, &tmpl);
 660 }
 661
 662 static int mv_cesa_cbc_des3_ede_decrypt(struct ablkcipher_request *req)
 663 {
 664         struct mv_cesa_op_ctx tmpl;
 665
 666         mv_cesa_set_op_cfg(&tmpl,
 667                            CESA_SA_DESC_CFG_CRYPTCM_CBC |
 668                            CESA_SA_DESC_CFG_3DES_EDE |
 669                            CESA_SA_DESC_CFG_DIR_DEC);
 670
 671         return mv_cesa_cbc_des3_op(req, &tmpl);
 672 }
 673
 674 struct crypto_alg mv_cesa_cbc_des3_ede_alg = {
 675         .cra_name = "cbc(des3_ede)",
 676         .cra_driver_name = "mv-cbc-des3-ede",
 677         .cra_priority = 300,
 678         .cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER |
 679                      CRYPTO_ALG_KERN_DRIVER_ONLY | CRYPTO_ALG_ASYNC,
 680         .cra_blocksize = DES3_EDE_BLOCK_SIZE,
 681         .cra_ctxsize = sizeof(struct mv_cesa_des3_ctx),
 682         .cra_alignmask = 0,
 683         .cra_type = &crypto_ablkcipher_type,
 684         .cra_module = THIS_MODULE,
 685         .cra_init = mv_cesa_ablkcipher_cra_init,
 686         .cra_u = {
 687                 .ablkcipher = {
 688                         .min_keysize = DES3_EDE_KEY_SIZE,
 689                         .max_keysize = DES3_EDE_KEY_SIZE,
 690                         .ivsize      = DES3_EDE_BLOCK_SIZE,
 691                         .setkey = mv_cesa_des3_ede_setkey,
 692                         .encrypt = mv_cesa_cbc_des3_ede_encrypt,
 693                         .decrypt = mv_cesa_cbc_des3_ede_decrypt,
 694                 },
 695         },
 696 };
 697
 698 static int mv_cesa_aes_op(struct ablkcipher_request *req,
 699                           struct mv_cesa_op_ctx *tmpl)
 700 {
 701         struct mv_cesa_aes_ctx *ctx = crypto_tfm_ctx(req->base.tfm);
 702         int i;
 703         u32 *key;
 704         u32 cfg;
 705
 706         cfg = CESA_SA_DESC_CFG_CRYPTM_AES;
 707
 708         if (mv_cesa_get_op_cfg(tmpl) & CESA_SA_DESC_CFG_DIR_DEC)
 709                 key = ctx->aes.key_dec;
 710         else
 711                 key = ctx->aes.key_enc;
 712
 713         for (i = 0; i < ctx->aes.key_length / sizeof(u32); i++)
 714                 tmpl->ctx.blkcipher.key[i] = cpu_to_le32(key[i]);
 715
 716         if (ctx->aes.key_length == 24)
 717                 cfg |= CESA_SA_DESC_CFG_AES_LEN_192;
 718         else if (ctx->aes.key_length == 32)
 719                 cfg |= CESA_SA_DESC_CFG_AES_LEN_256;
 720
 721         mv_cesa_update_op_cfg(tmpl, cfg,
 722                               CESA_SA_DESC_CFG_CRYPTM_MSK |
 723                               CESA_SA_DESC_CFG_AES_LEN_MSK);
 724
 725         return mv_cesa_ablkcipher_queue_req(req, tmpl);
 726 }
 727
 728 static int mv_cesa_ecb_aes_encrypt(struct ablkcipher_request *req)
 729 {
 730         struct mv_cesa_op_ctx tmpl;
 731
 732         mv_cesa_set_op_cfg(&tmpl,
 733                            CESA_SA_DESC_CFG_CRYPTCM_ECB |
 734                            CESA_SA_DESC_CFG_DIR_ENC);
 735
 736         return mv_cesa_aes_op(req, &tmpl);
 737 }
 738
 739 static int mv_cesa_ecb_aes_decrypt(struct ablkcipher_request *req)
 740 {
 741         struct mv_cesa_op_ctx tmpl;
 742
 743         mv_cesa_set_op_cfg(&tmpl,
 744                            CESA_SA_DESC_CFG_CRYPTCM_ECB |
 745                            CESA_SA_DESC_CFG_DIR_DEC);
 746
 747         return mv_cesa_aes_op(req, &tmpl);
 748 }
 749
 750 struct crypto_alg mv_cesa_ecb_aes_alg = {
 751         .cra_name = "ecb(aes)",
 752         .cra_driver_name = "mv-ecb-aes",
 753         .cra_priority = 300,
 754         .cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER |
 755                      CRYPTO_ALG_KERN_DRIVER_ONLY | CRYPTO_ALG_ASYNC,
 756         .cra_blocksize = AES_BLOCK_SIZE,
 757         .cra_ctxsize = sizeof(struct mv_cesa_aes_ctx),
 758         .cra_alignmask = 0,
 759         .cra_type = &crypto_ablkcipher_type,
 760         .cra_module = THIS_MODULE,
 761         .cra_init = mv_cesa_ablkcipher_cra_init,
 762         .cra_u = {
 763                 .ablkcipher = {
 764                         .min_keysize = AES_MIN_KEY_SIZE,
 765                         .max_keysize = AES_MAX_KEY_SIZE,
 766                         .setkey = mv_cesa_aes_setkey,
 767                         .encrypt = mv_cesa_ecb_aes_encrypt,
 768                         .decrypt = mv_cesa_ecb_aes_decrypt,
 769                 },
 770         },
 771 };
 772
 773 static int mv_cesa_cbc_aes_op(struct ablkcipher_request *req,
 774                               struct mv_cesa_op_ctx *tmpl)
 775 {
 776         mv_cesa_update_op_cfg(tmpl, CESA_SA_DESC_CFG_CRYPTCM_CBC,
 777                               CESA_SA_DESC_CFG_CRYPTCM_MSK);
 778         memcpy(tmpl->ctx.blkcipher.iv, req->info, AES_BLOCK_SIZE);
 779
 780         return mv_cesa_aes_op(req, tmpl);
 781 }
 782
 783 static int mv_cesa_cbc_aes_encrypt(struct ablkcipher_request *req)
 784 {
 785         struct mv_cesa_op_ctx tmpl;
 786
 787         mv_cesa_set_op_cfg(&tmpl, CESA_SA_DESC_CFG_DIR_ENC);
 788
 789         return mv_cesa_cbc_aes_op(req, &tmpl);
 790 }
 791
 792 static int mv_cesa_cbc_aes_decrypt(struct ablkcipher_request *req)
 793 {
 794         struct mv_cesa_op_ctx tmpl;
 795
 796         mv_cesa_set_op_cfg(&tmpl, CESA_SA_DESC_CFG_DIR_DEC);
 797
 798         return mv_cesa_cbc_aes_op(req, &tmpl);
 799 }
 800
 801 struct crypto_alg mv_cesa_cbc_aes_alg = {
 802         .cra_name = "cbc(aes)",
 803         .cra_driver_name = "mv-cbc-aes",
 804         .cra_priority = 300,
 805         .cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER |
 806                      CRYPTO_ALG_KERN_DRIVER_ONLY | CRYPTO_ALG_ASYNC,
 807         .cra_blocksize = AES_BLOCK_SIZE,
 808         .cra_ctxsize = sizeof(struct mv_cesa_aes_ctx),
 809         .cra_alignmask = 0,
 810         .cra_type = &crypto_ablkcipher_type,
 811         .cra_module = THIS_MODULE,
 812         .cra_init = mv_cesa_ablkcipher_cra_init,
 813         .cra_u = {
 814                 .ablkcipher = {
 815                         .min_keysize = AES_MIN_KEY_SIZE,
 816                         .max_keysize = AES_MAX_KEY_SIZE,
 817                         .ivsize = AES_BLOCK_SIZE,
 818                         .setkey = mv_cesa_aes_setkey,
 819                         .encrypt = mv_cesa_cbc_aes_encrypt,
 820                         .decrypt = mv_cesa_cbc_aes_decrypt,
 821                 },
 822         },
 823 };