drivers/crypto/hisilicon/zip/zip_crypto.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 /* Copyright (c) 2019 HiSilicon Limited. */
   3 #include <crypto/internal/acompress.h>
   4 #include <linux/bitfield.h>
   5 #include <linux/dma-mapping.h>
   6 #include <linux/scatterlist.h>
   7 #include "zip.h"
   8
   9 #define HZIP_ZLIB_HEAD_SIZE                     2
  10 #define HZIP_GZIP_HEAD_SIZE                     10
  11
  12 #define GZIP_HEAD_FHCRC_BIT                     BIT(1)
  13 #define GZIP_HEAD_FEXTRA_BIT                    BIT(2)
  14 #define GZIP_HEAD_FNAME_BIT                     BIT(3)
  15 #define GZIP_HEAD_FCOMMENT_BIT                  BIT(4)
  16
  17 #define GZIP_HEAD_FLG_SHIFT                     3
  18 #define GZIP_HEAD_FEXTRA_SHIFT                  10
  19 #define GZIP_HEAD_FEXTRA_XLEN                   2
  20 #define GZIP_HEAD_FHCRC_SIZE                    2
  21
  22 #define HZIP_CTX_Q_NUM                          2
  23 #define HZIP_GZIP_HEAD_BUF                      256
  24 #define HZIP_ALG_PRIORITY                       300
  25 #define HZIP_SGL_SGE_NR                         10
  26
  27 static const u8 zlib_head[HZIP_ZLIB_HEAD_SIZE] = {0x78, 0x9c};
  28 static const u8 gzip_head[HZIP_GZIP_HEAD_SIZE] = {0x1f, 0x8b, 0x08, 0x0, 0x0,
  29                                                   0x0, 0x0, 0x0, 0x0, 0x03};
  30 enum hisi_zip_alg_type {
  31         HZIP_ALG_TYPE_COMP = 0,
  32         HZIP_ALG_TYPE_DECOMP = 1,
  33 };
  34
  35 #define COMP_NAME_TO_TYPE(alg_name)                                     \
  36         (!strcmp((alg_name), "zlib-deflate") ? HZIP_ALG_TYPE_ZLIB :     \
  37          !strcmp((alg_name), "gzip") ? HZIP_ALG_TYPE_GZIP : 0)          \
  38
  39 #define TO_HEAD_SIZE(req_type)                                          \
  40         (((req_type) == HZIP_ALG_TYPE_ZLIB) ? sizeof(zlib_head) :       \
  41          ((req_type) == HZIP_ALG_TYPE_GZIP) ? sizeof(gzip_head) : 0)    \
  42
  43 #define TO_HEAD(req_type)                                               \
  44         (((req_type) == HZIP_ALG_TYPE_ZLIB) ? zlib_head :               \
  45          ((req_type) == HZIP_ALG_TYPE_GZIP) ? gzip_head : NULL)         \
  46
  47 struct hisi_zip_req {
  48         struct acomp_req *req;
  49         int sskip;
  50         int dskip;
  51         struct hisi_acc_hw_sgl *hw_src;
  52         struct hisi_acc_hw_sgl *hw_dst;
  53         dma_addr_t dma_src;
  54         dma_addr_t dma_dst;
  55         int req_id;
  56 };
  57
  58 struct hisi_zip_req_q {
  59         struct hisi_zip_req *q;
  60         unsigned long *req_bitmap;
  61         rwlock_t req_lock;
  62         u16 size;
  63 };
  64
  65 struct hisi_zip_qp_ctx {
  66         struct hisi_qp *qp;
  67         struct hisi_zip_sqe zip_sqe;
  68         struct hisi_zip_req_q req_q;
  69         struct hisi_acc_sgl_pool *sgl_pool;
  70         struct hisi_zip *zip_dev;
  71         struct hisi_zip_ctx *ctx;
  72 };
  73
  74 struct hisi_zip_ctx {
  75 #define QPC_COMP        0
  76 #define QPC_DECOMP      1
  77         struct hisi_zip_qp_ctx qp_ctx[HZIP_CTX_Q_NUM];
  78 };
  79
  80 static int sgl_sge_nr_set(const char *val, const struct kernel_param *kp)
  81 {
  82         int ret;
  83         u16 n;
  84
  85         if (!val)
  86                 return -EINVAL;
  87
  88         ret = kstrtou16(val, 10, &n);
  89         if (ret || n == 0 || n > HISI_ACC_SGL_SGE_NR_MAX)
  90                 return -EINVAL;
  91
  92         return param_set_int(val, kp);
  93 }
  94
  95 static const struct kernel_param_ops sgl_sge_nr_ops = {
  96         .set = sgl_sge_nr_set,
  97         .get = param_get_int,
  98 };
  99
 100 static u16 sgl_sge_nr = HZIP_SGL_SGE_NR;
 101 module_param_cb(sgl_sge_nr, &sgl_sge_nr_ops, &sgl_sge_nr, 0444);
 102 MODULE_PARM_DESC(sgl_sge_nr, "Number of sge in sgl(1-255)");
 103
 104 static void hisi_zip_config_buf_type(struct hisi_zip_sqe *sqe, u8 buf_type)
 105 {
 106         u32 val;
 107
 108         val = (sqe->dw9) & ~HZIP_BUF_TYPE_M;
 109         val |= FIELD_PREP(HZIP_BUF_TYPE_M, buf_type);
 110         sqe->dw9 = val;
 111 }
 112
 113 static void hisi_zip_config_tag(struct hisi_zip_sqe *sqe, u32 tag)
 114 {
 115         sqe->tag = tag;
 116 }
 117
 118 static void hisi_zip_fill_sqe(struct hisi_zip_sqe *sqe, u8 req_type,
 119                               dma_addr_t s_addr, dma_addr_t d_addr, u32 slen,
 120                               u32 dlen, int sskip, int dskip)
 121 {
 122         memset(sqe, 0, sizeof(struct hisi_zip_sqe));
 123
 124         sqe->input_data_length = slen - sskip;
 125         sqe->dw7 = FIELD_PREP(HZIP_IN_SGE_DATA_OFFSET_M, sskip);
 126         sqe->dw8 = FIELD_PREP(HZIP_OUT_SGE_DATA_OFFSET_M, dskip);
 127         sqe->dw9 = FIELD_PREP(HZIP_REQ_TYPE_M, req_type);
 128         sqe->dest_avail_out = dlen - dskip;
 129         sqe->source_addr_l = lower_32_bits(s_addr);
 130         sqe->source_addr_h = upper_32_bits(s_addr);
 131         sqe->dest_addr_l = lower_32_bits(d_addr);
 132         sqe->dest_addr_h = upper_32_bits(d_addr);
 133 }
 134
 135 static int hisi_zip_start_qp(struct hisi_qp *qp, struct hisi_zip_qp_ctx *ctx,
 136                              int alg_type, int req_type)
 137 {
 138         struct device *dev = &qp->qm->pdev->dev;
 139         int ret;
 140
 141         qp->req_type = req_type;
 142         qp->alg_type = alg_type;
 143         qp->qp_ctx = ctx;
 144
 145         ret = hisi_qm_start_qp(qp, 0);
 146         if (ret < 0) {
 147                 dev_err(dev, "start qp failed!\n");
 148                 return ret;
 149         }
 150
 151         ctx->qp = qp;
 152
 153         return 0;
 154 }
 155
 156 static void hisi_zip_release_qp(struct hisi_zip_qp_ctx *ctx)
 157 {
 158         hisi_qm_stop_qp(ctx->qp);
 159         hisi_qm_release_qp(ctx->qp);
 160 }
 161
 162 static int hisi_zip_ctx_init(struct hisi_zip_ctx *hisi_zip_ctx, u8 req_type)
 163 {
 164         struct hisi_qp *qps[HZIP_CTX_Q_NUM] = { NULL };
 165         struct hisi_zip *hisi_zip;
 166         int ret, i, j;
 167
 168         ret = zip_create_qps(qps, HZIP_CTX_Q_NUM);
 169         if (ret) {
 170                 pr_err("Can not create zip qps!\n");
 171                 return -ENODEV;
 172         }
 173
 174         hisi_zip = container_of(qps[0]->qm, struct hisi_zip, qm);
 175
 176         for (i = 0; i < HZIP_CTX_Q_NUM; i++) {
 177                 /* alg_type = 0 for compress, 1 for decompress in hw sqe */
 178                 ret = hisi_zip_start_qp(qps[i], &hisi_zip_ctx->qp_ctx[i], i,
 179                                         req_type);
 180                 if (ret) {
 181                         for (j = i - 1; j >= 0; j--)
 182                                 hisi_qm_stop_qp(hisi_zip_ctx->qp_ctx[j].qp);
 183
 184                         hisi_qm_free_qps(qps, HZIP_CTX_Q_NUM);
 185                         return ret;
 186                 }
 187
 188                 hisi_zip_ctx->qp_ctx[i].zip_dev = hisi_zip;
 189         }
 190
 191         return 0;
 192 }
 193
 194 static void hisi_zip_ctx_exit(struct hisi_zip_ctx *hisi_zip_ctx)
 195 {
 196         int i;
 197
 198         for (i = 1; i >= 0; i--)
 199                 hisi_zip_release_qp(&hisi_zip_ctx->qp_ctx[i]);
 200 }
 201
 202 static u16 get_extra_field_size(const u8 *start)
 203 {
 204         return *((u16 *)start) + GZIP_HEAD_FEXTRA_XLEN;
 205 }
 206
 207 static u32 get_name_field_size(const u8 *start)
 208 {
 209         return strlen(start) + 1;
 210 }
 211
 212 static u32 get_comment_field_size(const u8 *start)
 213 {
 214         return strlen(start) + 1;
 215 }
 216
 217 static u32 __get_gzip_head_size(const u8 *src)
 218 {
 219         u8 head_flg = *(src + GZIP_HEAD_FLG_SHIFT);
 220         u32 size = GZIP_HEAD_FEXTRA_SHIFT;
 221
 222         if (head_flg & GZIP_HEAD_FEXTRA_BIT)
 223                 size += get_extra_field_size(src + size);
 224         if (head_flg & GZIP_HEAD_FNAME_BIT)
 225                 size += get_name_field_size(src + size);
 226         if (head_flg & GZIP_HEAD_FCOMMENT_BIT)
 227                 size += get_comment_field_size(src + size);
 228         if (head_flg & GZIP_HEAD_FHCRC_BIT)
 229                 size += GZIP_HEAD_FHCRC_SIZE;
 230
 231         return size;
 232 }
 233
 234 static int hisi_zip_create_req_q(struct hisi_zip_ctx *ctx)
 235 {
 236         struct hisi_zip_req_q *req_q;
 237         int i, ret;
 238
 239         for (i = 0; i < HZIP_CTX_Q_NUM; i++) {
 240                 req_q = &ctx->qp_ctx[i].req_q;
 241                 req_q->size = QM_Q_DEPTH;
 242
 243                 req_q->req_bitmap = kcalloc(BITS_TO_LONGS(req_q->size),
 244                                             sizeof(long), GFP_KERNEL);
 245                 if (!req_q->req_bitmap) {
 246                         ret = -ENOMEM;
 247                         if (i == 0)
 248                                 return ret;
 249
 250                         goto err_free_loop0;
 251                 }
 252                 rwlock_init(&req_q->req_lock);
 253
 254                 req_q->q = kcalloc(req_q->size, sizeof(struct hisi_zip_req),
 255                                    GFP_KERNEL);
 256                 if (!req_q->q) {
 257                         ret = -ENOMEM;
 258                         if (i == 0)
 259                                 goto err_free_bitmap;
 260                         else
 261                                 goto err_free_loop1;
 262                 }
 263         }
 264
 265         return 0;
 266
 267 err_free_loop1:
 268         kfree(ctx->qp_ctx[QPC_DECOMP].req_q.req_bitmap);
 269 err_free_loop0:
 270         kfree(ctx->qp_ctx[QPC_COMP].req_q.q);
 271 err_free_bitmap:
 272         kfree(ctx->qp_ctx[QPC_COMP].req_q.req_bitmap);
 273         return ret;
 274 }
 275
 276 static void hisi_zip_release_req_q(struct hisi_zip_ctx *ctx)
 277 {
 278         int i;
 279
 280         for (i = 0; i < HZIP_CTX_Q_NUM; i++) {
 281                 kfree(ctx->qp_ctx[i].req_q.q);
 282                 kfree(ctx->qp_ctx[i].req_q.req_bitmap);
 283         }
 284 }
 285
 286 static int hisi_zip_create_sgl_pool(struct hisi_zip_ctx *ctx)
 287 {
 288         struct hisi_zip_qp_ctx *tmp;
 289         struct device *dev;
 290         int i;
 291
 292         for (i = 0; i < HZIP_CTX_Q_NUM; i++) {
 293                 tmp = &ctx->qp_ctx[i];
 294                 dev = &tmp->qp->qm->pdev->dev;
 295                 tmp->sgl_pool = hisi_acc_create_sgl_pool(dev, QM_Q_DEPTH << 1,
 296                                                          sgl_sge_nr);
 297                 if (IS_ERR(tmp->sgl_pool)) {
 298                         if (i == 1)
 299                                 goto err_free_sgl_pool0;
 300                         return -ENOMEM;
 301                 }
 302         }
 303
 304         return 0;
 305
 306 err_free_sgl_pool0:
 307         hisi_acc_free_sgl_pool(&ctx->qp_ctx[QPC_COMP].qp->qm->pdev->dev,
 308                                ctx->qp_ctx[QPC_COMP].sgl_pool);
 309         return -ENOMEM;
 310 }
 311
 312 static void hisi_zip_release_sgl_pool(struct hisi_zip_ctx *ctx)
 313 {
 314         int i;
 315
 316         for (i = 0; i < HZIP_CTX_Q_NUM; i++)
 317                 hisi_acc_free_sgl_pool(&ctx->qp_ctx[i].qp->qm->pdev->dev,
 318                                        ctx->qp_ctx[i].sgl_pool);
 319 }
 320
 321 static void hisi_zip_remove_req(struct hisi_zip_qp_ctx *qp_ctx,
 322                                 struct hisi_zip_req *req)
 323 {
 324         struct hisi_zip_req_q *req_q = &qp_ctx->req_q;
 325
 326         write_lock(&req_q->req_lock);
 327         clear_bit(req->req_id, req_q->req_bitmap);
 328         memset(req, 0, sizeof(struct hisi_zip_req));
 329         write_unlock(&req_q->req_lock);
 330 }
 331
 332 static void hisi_zip_acomp_cb(struct hisi_qp *qp, void *data)
 333 {
 334         struct hisi_zip_sqe *sqe = data;
 335         struct hisi_zip_qp_ctx *qp_ctx = qp->qp_ctx;
 336         struct hisi_zip_req_q *req_q = &qp_ctx->req_q;
 337         struct hisi_zip_req *req = req_q->q + sqe->tag;
 338         struct acomp_req *acomp_req = req->req;
 339         struct device *dev = &qp->qm->pdev->dev;
 340         u32 status, dlen, head_size;
 341         int err = 0;
 342
 343         status = sqe->dw3 & HZIP_BD_STATUS_M;
 344
 345         if (status != 0 && status != HZIP_NC_ERR) {
 346                 dev_err(dev, "%scompress fail in qp%u: %u, output: %u\n",
 347                         (qp->alg_type == 0) ? "" : "de", qp->qp_id, status,
 348                         sqe->produced);
 349                 err = -EIO;
 350         }
 351         dlen = sqe->produced;
 352
 353         hisi_acc_sg_buf_unmap(dev, acomp_req->src, req->hw_src);
 354         hisi_acc_sg_buf_unmap(dev, acomp_req->dst, req->hw_dst);
 355
 356         head_size = (qp->alg_type == 0) ? TO_HEAD_SIZE(qp->req_type) : 0;
 357         acomp_req->dlen = dlen + head_size;
 358
 359         if (acomp_req->base.complete)
 360                 acomp_request_complete(acomp_req, err);
 361
 362         hisi_zip_remove_req(qp_ctx, req);
 363 }
 364
 365 static void hisi_zip_set_acomp_cb(struct hisi_zip_ctx *ctx,
 366                                   void (*fn)(struct hisi_qp *, void *))
 367 {
 368         int i;
 369
 370         for (i = 0; i < HZIP_CTX_Q_NUM; i++)
 371                 ctx->qp_ctx[i].qp->req_cb = fn;
 372 }
 373
 374 static int hisi_zip_acomp_init(struct crypto_acomp *tfm)
 375 {
 376         const char *alg_name = crypto_tfm_alg_name(&tfm->base);
 377         struct hisi_zip_ctx *ctx = crypto_tfm_ctx(&tfm->base);
 378         int ret;
 379
 380         ret = hisi_zip_ctx_init(ctx, COMP_NAME_TO_TYPE(alg_name));
 381         if (ret)
 382                 return ret;
 383
 384         ret = hisi_zip_create_req_q(ctx);
 385         if (ret)
 386                 goto err_ctx_exit;
 387
 388         ret = hisi_zip_create_sgl_pool(ctx);
 389         if (ret)
 390                 goto err_release_req_q;
 391
 392         hisi_zip_set_acomp_cb(ctx, hisi_zip_acomp_cb);
 393
 394         return 0;
 395
 396 err_release_req_q:
 397         hisi_zip_release_req_q(ctx);
 398 err_ctx_exit:
 399         hisi_zip_ctx_exit(ctx);
 400         return ret;
 401 }
 402
 403 static void hisi_zip_acomp_exit(struct crypto_acomp *tfm)
 404 {
 405         struct hisi_zip_ctx *ctx = crypto_tfm_ctx(&tfm->base);
 406
 407         hisi_zip_set_acomp_cb(ctx, NULL);
 408         hisi_zip_release_sgl_pool(ctx);
 409         hisi_zip_release_req_q(ctx);
 410         hisi_zip_ctx_exit(ctx);
 411 }
 412
 413 static int add_comp_head(struct scatterlist *dst, u8 req_type)
 414 {
 415         int head_size = TO_HEAD_SIZE(req_type);
 416         const u8 *head = TO_HEAD(req_type);
 417         int ret;
 418
 419         ret = sg_copy_from_buffer(dst, sg_nents(dst), head, head_size);
 420         if (ret != head_size)
 421                 return -ENOMEM;
 422
 423         return head_size;
 424 }
 425
 426 static size_t get_gzip_head_size(struct scatterlist *sgl)
 427 {
 428         char buf[HZIP_GZIP_HEAD_BUF];
 429
 430         sg_copy_to_buffer(sgl, sg_nents(sgl), buf, sizeof(buf));
 431
 432         return __get_gzip_head_size(buf);
 433 }
 434
 435 static size_t get_comp_head_size(struct scatterlist *src, u8 req_type)
 436 {
 437         switch (req_type) {
 438         case HZIP_ALG_TYPE_ZLIB:
 439                 return TO_HEAD_SIZE(HZIP_ALG_TYPE_ZLIB);
 440         case HZIP_ALG_TYPE_GZIP:
 441                 return get_gzip_head_size(src);
 442         default:
 443                 pr_err("request type does not support!\n");
 444                 return -EINVAL;
 445         }
 446 }
 447
 448 static struct hisi_zip_req *hisi_zip_create_req(struct acomp_req *req,
 449                                                 struct hisi_zip_qp_ctx *qp_ctx,
 450                                                 size_t head_size, bool is_comp)
 451 {
 452         struct hisi_zip_req_q *req_q = &qp_ctx->req_q;
 453         struct hisi_zip_req *q = req_q->q;
 454         struct hisi_zip_req *req_cache;
 455         int req_id;
 456
 457         write_lock(&req_q->req_lock);
 458
 459         req_id = find_first_zero_bit(req_q->req_bitmap, req_q->size);
 460         if (req_id >= req_q->size) {
 461                 write_unlock(&req_q->req_lock);
 462                 dev_dbg(&qp_ctx->qp->qm->pdev->dev, "req cache is full!\n");
 463                 return ERR_PTR(-EBUSY);
 464         }
 465         set_bit(req_id, req_q->req_bitmap);
 466
 467         req_cache = q + req_id;
 468         req_cache->req_id = req_id;
 469         req_cache->req = req;
 470
 471         if (is_comp) {
 472                 req_cache->sskip = 0;
 473                 req_cache->dskip = head_size;
 474         } else {
 475                 req_cache->sskip = head_size;
 476                 req_cache->dskip = 0;
 477         }
 478
 479         write_unlock(&req_q->req_lock);
 480
 481         return req_cache;
 482 }
 483
 484 static int hisi_zip_do_work(struct hisi_zip_req *req,
 485                             struct hisi_zip_qp_ctx *qp_ctx)
 486 {
 487         struct hisi_zip_sqe *zip_sqe = &qp_ctx->zip_sqe;
 488         struct acomp_req *a_req = req->req;
 489         struct hisi_qp *qp = qp_ctx->qp;
 490         struct device *dev = &qp->qm->pdev->dev;
 491         struct hisi_acc_sgl_pool *pool = qp_ctx->sgl_pool;
 492         dma_addr_t input;
 493         dma_addr_t output;
 494         int ret;
 495
 496         if (!a_req->src || !a_req->slen || !a_req->dst || !a_req->dlen)
 497                 return -EINVAL;
 498
 499         req->hw_src = hisi_acc_sg_buf_map_to_hw_sgl(dev, a_req->src, pool,
 500                                                     req->req_id << 1, &input);
 501         if (IS_ERR(req->hw_src))
 502                 return PTR_ERR(req->hw_src);
 503         req->dma_src = input;
 504
 505         req->hw_dst = hisi_acc_sg_buf_map_to_hw_sgl(dev, a_req->dst, pool,
 506                                                     (req->req_id << 1) + 1,
 507                                                     &output);
 508         if (IS_ERR(req->hw_dst)) {
 509                 ret = PTR_ERR(req->hw_dst);
 510                 goto err_unmap_input;
 511         }
 512         req->dma_dst = output;
 513
 514         hisi_zip_fill_sqe(zip_sqe, qp->req_type, input, output, a_req->slen,
 515                           a_req->dlen, req->sskip, req->dskip);
 516         hisi_zip_config_buf_type(zip_sqe, HZIP_SGL);
 517         hisi_zip_config_tag(zip_sqe, req->req_id);
 518
 519         /* send command to start a task */
 520         ret = hisi_qp_send(qp, zip_sqe);
 521         if (ret < 0)
 522                 goto err_unmap_output;
 523
 524         return -EINPROGRESS;
 525
 526 err_unmap_output:
 527         hisi_acc_sg_buf_unmap(dev, a_req->dst, req->hw_dst);
 528 err_unmap_input:
 529         hisi_acc_sg_buf_unmap(dev, a_req->src, req->hw_src);
 530         return ret;
 531 }
 532
 533 static int hisi_zip_acompress(struct acomp_req *acomp_req)
 534 {
 535         struct hisi_zip_ctx *ctx = crypto_tfm_ctx(acomp_req->base.tfm);
 536         struct hisi_zip_qp_ctx *qp_ctx = &ctx->qp_ctx[QPC_COMP];
 537         struct hisi_zip_req *req;
 538         int head_size;
 539         int ret;
 540
 541         /* let's output compression head now */
 542         head_size = add_comp_head(acomp_req->dst, qp_ctx->qp->req_type);
 543         if (head_size < 0)
 544                 return -ENOMEM;
 545
 546         req = hisi_zip_create_req(acomp_req, qp_ctx, (size_t)head_size, true);
 547         if (IS_ERR(req))
 548                 return PTR_ERR(req);
 549
 550         ret = hisi_zip_do_work(req, qp_ctx);
 551         if (ret != -EINPROGRESS)
 552                 hisi_zip_remove_req(qp_ctx, req);
 553
 554         return ret;
 555 }
 556
 557 static int hisi_zip_adecompress(struct acomp_req *acomp_req)
 558 {
 559         struct hisi_zip_ctx *ctx = crypto_tfm_ctx(acomp_req->base.tfm);
 560         struct hisi_zip_qp_ctx *qp_ctx = &ctx->qp_ctx[QPC_DECOMP];
 561         struct hisi_zip_req *req;
 562         size_t head_size;
 563         int ret;
 564
 565         head_size = get_comp_head_size(acomp_req->src, qp_ctx->qp->req_type);
 566
 567         req = hisi_zip_create_req(acomp_req, qp_ctx, head_size, false);
 568         if (IS_ERR(req))
 569                 return PTR_ERR(req);
 570
 571         ret = hisi_zip_do_work(req, qp_ctx);
 572         if (ret != -EINPROGRESS)
 573                 hisi_zip_remove_req(qp_ctx, req);
 574
 575         return ret;
 576 }
 577
 578 static struct acomp_alg hisi_zip_acomp_zlib = {
 579         .init                   = hisi_zip_acomp_init,
 580         .exit                   = hisi_zip_acomp_exit,
 581         .compress               = hisi_zip_acompress,
 582         .decompress             = hisi_zip_adecompress,
 583         .base                   = {
 584                 .cra_name               = "zlib-deflate",
 585                 .cra_driver_name        = "hisi-zlib-acomp",
 586                 .cra_module             = THIS_MODULE,
 587                 .cra_priority           = HZIP_ALG_PRIORITY,
 588                 .cra_ctxsize            = sizeof(struct hisi_zip_ctx),
 589         }
 590 };
 591
 592 static struct acomp_alg hisi_zip_acomp_gzip = {
 593         .init                   = hisi_zip_acomp_init,
 594         .exit                   = hisi_zip_acomp_exit,
 595         .compress               = hisi_zip_acompress,
 596         .decompress             = hisi_zip_adecompress,
 597         .base                   = {
 598                 .cra_name               = "gzip",
 599                 .cra_driver_name        = "hisi-gzip-acomp",
 600                 .cra_module             = THIS_MODULE,
 601                 .cra_priority           = HZIP_ALG_PRIORITY,
 602                 .cra_ctxsize            = sizeof(struct hisi_zip_ctx),
 603         }
 604 };
 605
 606 int hisi_zip_register_to_crypto(void)
 607 {
 608         int ret = 0;
 609
 610         ret = crypto_register_acomp(&hisi_zip_acomp_zlib);
 611         if (ret) {
 612                 pr_err("Zlib acomp algorithm registration failed\n");
 613                 return ret;
 614         }
 615
 616         ret = crypto_register_acomp(&hisi_zip_acomp_gzip);
 617         if (ret) {
 618                 pr_err("Gzip acomp algorithm registration failed\n");
 619                 crypto_unregister_acomp(&hisi_zip_acomp_zlib);
 620         }
 621
 622         return ret;
 623 }
 624
 625 void hisi_zip_unregister_from_crypto(void)
 626 {
 627         crypto_unregister_acomp(&hisi_zip_acomp_gzip);
 628         crypto_unregister_acomp(&hisi_zip_acomp_zlib);
 629 }