drivers/infiniband/hw/hns/hns_roce_qp.c

   1 /*
   2  * Copyright (c) 2016 Hisilicon Limited.
   3  * Copyright (c) 2007, 2008 Mellanox Technologies. All rights reserved.
   4  *
   5  * This software is available to you under a choice of one of two
   6  * licenses.  You may choose to be licensed under the terms of the GNU
   7  * General Public License (GPL) Version 2, available from the file
   8  * COPYING in the main directory of this source tree, or the
   9  * OpenIB.org BSD license below:
  10  *
  11  *     Redistribution and use in source and binary forms, with or
  12  *     without modification, are permitted provided that the following
  13  *     conditions are met:
  14  *
  15  *      - Redistributions of source code must retain the above
  16  *        copyright notice, this list of conditions and the following
  17  *        disclaimer.
  18  *
  19  *      - Redistributions in binary form must reproduce the above
  20  *        copyright notice, this list of conditions and the following
  21  *        disclaimer in the documentation and/or other materials
  22  *        provided with the distribution.
  23  *
  24  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  25  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  26  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  27  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  28  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  29  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  30  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  31  * SOFTWARE.
  32  */
  33
  34 #include <linux/pci.h>
  35 #include <linux/platform_device.h>
  36 #include <rdma/ib_addr.h>
  37 #include <rdma/ib_umem.h>
  38 #include "hns_roce_common.h"
  39 #include "hns_roce_device.h"
  40 #include "hns_roce_hem.h"
  41 #include <rdma/hns-abi.h>
  42
  43 #define SQP_NUM                         (2 * HNS_ROCE_MAX_PORTS)
  44
  45 void hns_roce_qp_event(struct hns_roce_dev *hr_dev, u32 qpn, int event_type)
  46 {
  47         struct hns_roce_qp_table *qp_table = &hr_dev->qp_table;
  48         struct device *dev = hr_dev->dev;
  49         struct hns_roce_qp *qp;
  50
  51         spin_lock(&qp_table->lock);
  52
  53         qp = __hns_roce_qp_lookup(hr_dev, qpn);
  54         if (qp)
  55                 atomic_inc(&qp->refcount);
  56
  57         spin_unlock(&qp_table->lock);
  58
  59         if (!qp) {
  60                 dev_warn(dev, "Async event for bogus QP %08x\n", qpn);
  61                 return;
  62         }
  63
  64         qp->event(qp, (enum hns_roce_event)event_type);
  65
  66         if (atomic_dec_and_test(&qp->refcount))
  67                 complete(&qp->free);
  68 }
  69 EXPORT_SYMBOL_GPL(hns_roce_qp_event);
  70
  71 static void hns_roce_ib_qp_event(struct hns_roce_qp *hr_qp,
  72                                  enum hns_roce_event type)
  73 {
  74         struct ib_event event;
  75         struct ib_qp *ibqp = &hr_qp->ibqp;
  76
  77         if (ibqp->event_handler) {
  78                 event.device = ibqp->device;
  79                 event.element.qp = ibqp;
  80                 switch (type) {
  81                 case HNS_ROCE_EVENT_TYPE_PATH_MIG:
  82                         event.event = IB_EVENT_PATH_MIG;
  83                         break;
  84                 case HNS_ROCE_EVENT_TYPE_COMM_EST:
  85                         event.event = IB_EVENT_COMM_EST;
  86                         break;
  87                 case HNS_ROCE_EVENT_TYPE_SQ_DRAINED:
  88                         event.event = IB_EVENT_SQ_DRAINED;
  89                         break;
  90                 case HNS_ROCE_EVENT_TYPE_SRQ_LAST_WQE_REACH:
  91                         event.event = IB_EVENT_QP_LAST_WQE_REACHED;
  92                         break;
  93                 case HNS_ROCE_EVENT_TYPE_WQ_CATAS_ERROR:
  94                         event.event = IB_EVENT_QP_FATAL;
  95                         break;
  96                 case HNS_ROCE_EVENT_TYPE_PATH_MIG_FAILED:
  97                         event.event = IB_EVENT_PATH_MIG_ERR;
  98                         break;
  99                 case HNS_ROCE_EVENT_TYPE_INV_REQ_LOCAL_WQ_ERROR:
 100                         event.event = IB_EVENT_QP_REQ_ERR;
 101                         break;
 102                 case HNS_ROCE_EVENT_TYPE_LOCAL_WQ_ACCESS_ERROR:
 103                         event.event = IB_EVENT_QP_ACCESS_ERR;
 104                         break;
 105                 default:
 106                         dev_dbg(ibqp->device->dev.parent, "roce_ib: Unexpected event type %d on QP %06lx\n",
 107                                 type, hr_qp->qpn);
 108                         return;
 109                 }
 110                 ibqp->event_handler(&event, ibqp->qp_context);
 111         }
 112 }
 113
 114 static int hns_roce_reserve_range_qp(struct hns_roce_dev *hr_dev, int cnt,
 115                                      int align, unsigned long *base)
 116 {
 117         struct hns_roce_qp_table *qp_table = &hr_dev->qp_table;
 118
 119         return hns_roce_bitmap_alloc_range(&qp_table->bitmap, cnt, align,
 120                                            base) ?
 121                        -ENOMEM :
 122                        0;
 123 }
 124
 125 enum hns_roce_qp_state to_hns_roce_state(enum ib_qp_state state)
 126 {
 127         switch (state) {
 128         case IB_QPS_RESET:
 129                 return HNS_ROCE_QP_STATE_RST;
 130         case IB_QPS_INIT:
 131                 return HNS_ROCE_QP_STATE_INIT;
 132         case IB_QPS_RTR:
 133                 return HNS_ROCE_QP_STATE_RTR;
 134         case IB_QPS_RTS:
 135                 return HNS_ROCE_QP_STATE_RTS;
 136         case IB_QPS_SQD:
 137                 return HNS_ROCE_QP_STATE_SQD;
 138         case IB_QPS_ERR:
 139                 return HNS_ROCE_QP_STATE_ERR;
 140         default:
 141                 return HNS_ROCE_QP_NUM_STATE;
 142         }
 143 }
 144 EXPORT_SYMBOL_GPL(to_hns_roce_state);
 145
 146 static int hns_roce_gsi_qp_alloc(struct hns_roce_dev *hr_dev, unsigned long qpn,
 147                                  struct hns_roce_qp *hr_qp)
 148 {
 149         struct hns_roce_qp_table *qp_table = &hr_dev->qp_table;
 150         int ret;
 151
 152         if (!qpn)
 153                 return -EINVAL;
 154
 155         hr_qp->qpn = qpn;
 156
 157         spin_lock_irq(&qp_table->lock);
 158         ret = radix_tree_insert(&hr_dev->qp_table_tree,
 159                                 hr_qp->qpn & (hr_dev->caps.num_qps - 1), hr_qp);
 160         spin_unlock_irq(&qp_table->lock);
 161         if (ret) {
 162                 dev_err(hr_dev->dev, "QPC radix_tree_insert failed\n");
 163                 goto err_put_irrl;
 164         }
 165
 166         atomic_set(&hr_qp->refcount, 1);
 167         init_completion(&hr_qp->free);
 168
 169         return 0;
 170
 171 err_put_irrl:
 172
 173         return ret;
 174 }
 175
 176 static int hns_roce_qp_alloc(struct hns_roce_dev *hr_dev, unsigned long qpn,
 177                              struct hns_roce_qp *hr_qp)
 178 {
 179         struct hns_roce_qp_table *qp_table = &hr_dev->qp_table;
 180         struct device *dev = hr_dev->dev;
 181         int ret;
 182
 183         if (!qpn)
 184                 return -EINVAL;
 185
 186         hr_qp->qpn = qpn;
 187
 188         /* Alloc memory for QPC */
 189         ret = hns_roce_table_get(hr_dev, &qp_table->qp_table, hr_qp->qpn);
 190         if (ret) {
 191                 dev_err(dev, "QPC table get failed\n");
 192                 goto err_out;
 193         }
 194
 195         /* Alloc memory for IRRL */
 196         ret = hns_roce_table_get(hr_dev, &qp_table->irrl_table, hr_qp->qpn);
 197         if (ret) {
 198                 dev_err(dev, "IRRL table get failed\n");
 199                 goto err_put_qp;
 200         }
 201
 202         if (hr_dev->caps.trrl_entry_sz) {
 203                 /* Alloc memory for TRRL */
 204                 ret = hns_roce_table_get(hr_dev, &qp_table->trrl_table,
 205                                          hr_qp->qpn);
 206                 if (ret) {
 207                         dev_err(dev, "TRRL table get failed\n");
 208                         goto err_put_irrl;
 209                 }
 210         }
 211
 212         spin_lock_irq(&qp_table->lock);
 213         ret = radix_tree_insert(&hr_dev->qp_table_tree,
 214                                 hr_qp->qpn & (hr_dev->caps.num_qps - 1), hr_qp);
 215         spin_unlock_irq(&qp_table->lock);
 216         if (ret) {
 217                 dev_err(dev, "QPC radix_tree_insert failed\n");
 218                 goto err_put_trrl;
 219         }
 220
 221         atomic_set(&hr_qp->refcount, 1);
 222         init_completion(&hr_qp->free);
 223
 224         return 0;
 225
 226 err_put_trrl:
 227         if (hr_dev->caps.trrl_entry_sz)
 228                 hns_roce_table_put(hr_dev, &qp_table->trrl_table, hr_qp->qpn);
 229
 230 err_put_irrl:
 231         hns_roce_table_put(hr_dev, &qp_table->irrl_table, hr_qp->qpn);
 232
 233 err_put_qp:
 234         hns_roce_table_put(hr_dev, &qp_table->qp_table, hr_qp->qpn);
 235
 236 err_out:
 237         return ret;
 238 }
 239
 240 void hns_roce_qp_remove(struct hns_roce_dev *hr_dev, struct hns_roce_qp *hr_qp)
 241 {
 242         struct hns_roce_qp_table *qp_table = &hr_dev->qp_table;
 243         unsigned long flags;
 244
 245         spin_lock_irqsave(&qp_table->lock, flags);
 246         radix_tree_delete(&hr_dev->qp_table_tree,
 247                           hr_qp->qpn & (hr_dev->caps.num_qps - 1));
 248         spin_unlock_irqrestore(&qp_table->lock, flags);
 249 }
 250 EXPORT_SYMBOL_GPL(hns_roce_qp_remove);
 251
 252 void hns_roce_qp_free(struct hns_roce_dev *hr_dev, struct hns_roce_qp *hr_qp)
 253 {
 254         struct hns_roce_qp_table *qp_table = &hr_dev->qp_table;
 255
 256         if (atomic_dec_and_test(&hr_qp->refcount))
 257                 complete(&hr_qp->free);
 258         wait_for_completion(&hr_qp->free);
 259
 260         if ((hr_qp->ibqp.qp_type) != IB_QPT_GSI) {
 261                 if (hr_dev->caps.trrl_entry_sz)
 262                         hns_roce_table_put(hr_dev, &qp_table->trrl_table,
 263                                            hr_qp->qpn);
 264                 hns_roce_table_put(hr_dev, &qp_table->irrl_table, hr_qp->qpn);
 265         }
 266 }
 267 EXPORT_SYMBOL_GPL(hns_roce_qp_free);
 268
 269 void hns_roce_release_range_qp(struct hns_roce_dev *hr_dev, int base_qpn,
 270                                int cnt)
 271 {
 272         struct hns_roce_qp_table *qp_table = &hr_dev->qp_table;
 273
 274         if (base_qpn < SQP_NUM)
 275                 return;
 276
 277         hns_roce_bitmap_free_range(&qp_table->bitmap, base_qpn, cnt, BITMAP_RR);
 278 }
 279 EXPORT_SYMBOL_GPL(hns_roce_release_range_qp);
 280
 281 static int hns_roce_set_rq_size(struct hns_roce_dev *hr_dev,
 282                                 struct ib_qp_cap *cap, int is_user, int has_srq,
 283                                 struct hns_roce_qp *hr_qp)
 284 {
 285         struct device *dev = hr_dev->dev;
 286         u32 max_cnt;
 287
 288         /* Check the validity of QP support capacity */
 289         if (cap->max_recv_wr > hr_dev->caps.max_wqes ||
 290             cap->max_recv_sge > hr_dev->caps.max_rq_sg) {
 291                 dev_err(dev, "RQ WR or sge error!max_recv_wr=%d max_recv_sge=%d\n",
 292                         cap->max_recv_wr, cap->max_recv_sge);
 293                 return -EINVAL;
 294         }
 295
 296         /* If srq exit, set zero for relative number of rq */
 297         if (has_srq) {
 298                 if (cap->max_recv_wr) {
 299                         dev_dbg(dev, "srq no need config max_recv_wr\n");
 300                         return -EINVAL;
 301                 }
 302
 303                 hr_qp->rq.wqe_cnt = hr_qp->rq.max_gs = 0;
 304         } else {
 305                 if (is_user && (!cap->max_recv_wr || !cap->max_recv_sge)) {
 306                         dev_err(dev, "user space no need config max_recv_wr max_recv_sge\n");
 307                         return -EINVAL;
 308                 }
 309
 310                 if (hr_dev->caps.min_wqes)
 311                         max_cnt = max(cap->max_recv_wr, hr_dev->caps.min_wqes);
 312                 else
 313                         max_cnt = cap->max_recv_wr;
 314
 315                 hr_qp->rq.wqe_cnt = roundup_pow_of_two(max_cnt);
 316
 317                 if ((u32)hr_qp->rq.wqe_cnt > hr_dev->caps.max_wqes) {
 318                         dev_err(dev, "while setting rq size, rq.wqe_cnt too large\n");
 319                         return -EINVAL;
 320                 }
 321
 322                 max_cnt = max(1U, cap->max_recv_sge);
 323                 hr_qp->rq.max_gs = roundup_pow_of_two(max_cnt);
 324                 if (hr_dev->caps.max_rq_sg <= 2)
 325                         hr_qp->rq.wqe_shift =
 326                                         ilog2(hr_dev->caps.max_rq_desc_sz);
 327                 else
 328                         hr_qp->rq.wqe_shift =
 329                                         ilog2(hr_dev->caps.max_rq_desc_sz
 330                                               * hr_qp->rq.max_gs);
 331         }
 332
 333         cap->max_recv_wr = hr_qp->rq.max_post = hr_qp->rq.wqe_cnt;
 334         cap->max_recv_sge = hr_qp->rq.max_gs;
 335
 336         return 0;
 337 }
 338
 339 static int hns_roce_set_user_sq_size(struct hns_roce_dev *hr_dev,
 340                                      struct ib_qp_cap *cap,
 341                                      struct hns_roce_qp *hr_qp,
 342                                      struct hns_roce_ib_create_qp *ucmd)
 343 {
 344         u32 roundup_sq_stride = roundup_pow_of_two(hr_dev->caps.max_sq_desc_sz);
 345         u8 max_sq_stride = ilog2(roundup_sq_stride);
 346         u32 page_size;
 347         u32 max_cnt;
 348
 349         /* Sanity check SQ size before proceeding */
 350         if ((u32)(1 << ucmd->log_sq_bb_count) > hr_dev->caps.max_wqes ||
 351              ucmd->log_sq_stride > max_sq_stride ||
 352              ucmd->log_sq_stride < HNS_ROCE_IB_MIN_SQ_STRIDE) {
 353                 dev_err(hr_dev->dev, "check SQ size error!\n");
 354                 return -EINVAL;
 355         }
 356
 357         if (cap->max_send_sge > hr_dev->caps.max_sq_sg) {
 358                 dev_err(hr_dev->dev, "SQ sge error! max_send_sge=%d\n",
 359                         cap->max_send_sge);
 360                 return -EINVAL;
 361         }
 362
 363         hr_qp->sq.wqe_cnt = 1 << ucmd->log_sq_bb_count;
 364         hr_qp->sq.wqe_shift = ucmd->log_sq_stride;
 365
 366         max_cnt = max(1U, cap->max_send_sge);
 367         if (hr_dev->caps.max_sq_sg <= 2)
 368                 hr_qp->sq.max_gs = roundup_pow_of_two(max_cnt);
 369         else
 370                 hr_qp->sq.max_gs = max_cnt;
 371
 372         if (hr_qp->sq.max_gs > 2)
 373                 hr_qp->sge.sge_cnt = roundup_pow_of_two(hr_qp->sq.wqe_cnt *
 374                                                         (hr_qp->sq.max_gs - 2));
 375
 376         if ((hr_qp->sq.max_gs > 2) && (hr_dev->pci_dev->revision == 0x20)) {
 377                 if (hr_qp->sge.sge_cnt > hr_dev->caps.max_extend_sg) {
 378                         dev_err(hr_dev->dev,
 379                                 "The extended sge cnt error! sge_cnt=%d\n",
 380                                 hr_qp->sge.sge_cnt);
 381                         return -EINVAL;
 382                 }
 383         }
 384
 385         hr_qp->sge.sge_shift = 4;
 386
 387         /* Get buf size, SQ and RQ  are aligned to page_szie */
 388         if (hr_dev->caps.max_sq_sg <= 2) {
 389                 hr_qp->buff_size = HNS_ROCE_ALOGN_UP((hr_qp->rq.wqe_cnt <<
 390                                              hr_qp->rq.wqe_shift), PAGE_SIZE) +
 391                                    HNS_ROCE_ALOGN_UP((hr_qp->sq.wqe_cnt <<
 392                                              hr_qp->sq.wqe_shift), PAGE_SIZE);
 393
 394                 hr_qp->sq.offset = 0;
 395                 hr_qp->rq.offset = HNS_ROCE_ALOGN_UP((hr_qp->sq.wqe_cnt <<
 396                                              hr_qp->sq.wqe_shift), PAGE_SIZE);
 397         } else {
 398                 page_size = 1 << (hr_dev->caps.mtt_buf_pg_sz + PAGE_SHIFT);
 399                 hr_qp->buff_size = HNS_ROCE_ALOGN_UP((hr_qp->rq.wqe_cnt <<
 400                                              hr_qp->rq.wqe_shift), page_size) +
 401                                    HNS_ROCE_ALOGN_UP((hr_qp->sge.sge_cnt <<
 402                                              hr_qp->sge.sge_shift), page_size) +
 403                                    HNS_ROCE_ALOGN_UP((hr_qp->sq.wqe_cnt <<
 404                                              hr_qp->sq.wqe_shift), page_size);
 405
 406                 hr_qp->sq.offset = 0;
 407                 if (hr_qp->sge.sge_cnt) {
 408                         hr_qp->sge.offset = HNS_ROCE_ALOGN_UP(
 409                                                         (hr_qp->sq.wqe_cnt <<
 410                                                         hr_qp->sq.wqe_shift),
 411                                                         page_size);
 412                         hr_qp->rq.offset = hr_qp->sge.offset +
 413                                         HNS_ROCE_ALOGN_UP((hr_qp->sge.sge_cnt <<
 414                                                 hr_qp->sge.sge_shift),
 415                                                 page_size);
 416                 } else {
 417                         hr_qp->rq.offset = HNS_ROCE_ALOGN_UP(
 418                                                         (hr_qp->sq.wqe_cnt <<
 419                                                         hr_qp->sq.wqe_shift),
 420                                                         page_size);
 421                 }
 422         }
 423
 424         return 0;
 425 }
 426
 427 static int hns_roce_set_kernel_sq_size(struct hns_roce_dev *hr_dev,
 428                                        struct ib_qp_cap *cap,
 429                                        struct hns_roce_qp *hr_qp)
 430 {
 431         struct device *dev = hr_dev->dev;
 432         u32 page_size;
 433         u32 max_cnt;
 434         int size;
 435
 436         if (cap->max_send_wr  > hr_dev->caps.max_wqes  ||
 437             cap->max_send_sge > hr_dev->caps.max_sq_sg ||
 438             cap->max_inline_data > hr_dev->caps.max_sq_inline) {
 439                 dev_err(dev, "SQ WR or sge or inline data error!\n");
 440                 return -EINVAL;
 441         }
 442
 443         hr_qp->sq.wqe_shift = ilog2(hr_dev->caps.max_sq_desc_sz);
 444         hr_qp->sq_max_wqes_per_wr = 1;
 445         hr_qp->sq_spare_wqes = 0;
 446
 447         if (hr_dev->caps.min_wqes)
 448                 max_cnt = max(cap->max_send_wr, hr_dev->caps.min_wqes);
 449         else
 450                 max_cnt = cap->max_send_wr;
 451
 452         hr_qp->sq.wqe_cnt = roundup_pow_of_two(max_cnt);
 453         if ((u32)hr_qp->sq.wqe_cnt > hr_dev->caps.max_wqes) {
 454                 dev_err(dev, "while setting kernel sq size, sq.wqe_cnt too large\n");
 455                 return -EINVAL;
 456         }
 457
 458         /* Get data_seg numbers */
 459         max_cnt = max(1U, cap->max_send_sge);
 460         if (hr_dev->caps.max_sq_sg <= 2)
 461                 hr_qp->sq.max_gs = roundup_pow_of_two(max_cnt);
 462         else
 463                 hr_qp->sq.max_gs = max_cnt;
 464
 465         if (hr_qp->sq.max_gs > 2) {
 466                 hr_qp->sge.sge_cnt = roundup_pow_of_two(hr_qp->sq.wqe_cnt *
 467                                      (hr_qp->sq.max_gs - 2));
 468                 hr_qp->sge.sge_shift = 4;
 469         }
 470
 471         /* ud sqwqe's sge use extend sge */
 472         if (hr_dev->caps.max_sq_sg > 2 && hr_qp->ibqp.qp_type == IB_QPT_GSI) {
 473                 hr_qp->sge.sge_cnt = roundup_pow_of_two(hr_qp->sq.wqe_cnt *
 474                                      hr_qp->sq.max_gs);
 475                 hr_qp->sge.sge_shift = 4;
 476         }
 477
 478         if ((hr_qp->sq.max_gs > 2) && hr_dev->pci_dev->revision == 0x20) {
 479                 if (hr_qp->sge.sge_cnt > hr_dev->caps.max_extend_sg) {
 480                         dev_err(dev, "The extended sge cnt error! sge_cnt=%d\n",
 481                                 hr_qp->sge.sge_cnt);
 482                         return -EINVAL;
 483                 }
 484         }
 485
 486         /* Get buf size, SQ and RQ are aligned to PAGE_SIZE */
 487         page_size = 1 << (hr_dev->caps.mtt_buf_pg_sz + PAGE_SHIFT);
 488         hr_qp->sq.offset = 0;
 489         size = HNS_ROCE_ALOGN_UP(hr_qp->sq.wqe_cnt << hr_qp->sq.wqe_shift,
 490                                  page_size);
 491
 492         if (hr_dev->caps.max_sq_sg > 2 && hr_qp->sge.sge_cnt) {
 493                 hr_qp->sge.offset = size;
 494                 size += HNS_ROCE_ALOGN_UP(hr_qp->sge.sge_cnt <<
 495                                           hr_qp->sge.sge_shift, page_size);
 496         }
 497
 498         hr_qp->rq.offset = size;
 499         size += HNS_ROCE_ALOGN_UP((hr_qp->rq.wqe_cnt << hr_qp->rq.wqe_shift),
 500                                   page_size);
 501         hr_qp->buff_size = size;
 502
 503         /* Get wr and sge number which send */
 504         cap->max_send_wr = hr_qp->sq.max_post = hr_qp->sq.wqe_cnt;
 505         cap->max_send_sge = hr_qp->sq.max_gs;
 506
 507         /* We don't support inline sends for kernel QPs (yet) */
 508         cap->max_inline_data = 0;
 509
 510         return 0;
 511 }
 512
 513 static int hns_roce_qp_has_sq(struct ib_qp_init_attr *attr)
 514 {
 515         if (attr->qp_type == IB_QPT_XRC_TGT || !attr->cap.max_send_wr)
 516                 return 0;
 517
 518         return 1;
 519 }
 520
 521 static int hns_roce_qp_has_rq(struct ib_qp_init_attr *attr)
 522 {
 523         if (attr->qp_type == IB_QPT_XRC_INI ||
 524             attr->qp_type == IB_QPT_XRC_TGT || attr->srq ||
 525             !attr->cap.max_recv_wr)
 526                 return 0;
 527
 528         return 1;
 529 }
 530
 531 static int hns_roce_create_qp_common(struct hns_roce_dev *hr_dev,
 532                                      struct ib_pd *ib_pd,
 533                                      struct ib_qp_init_attr *init_attr,
 534                                      struct ib_udata *udata, unsigned long sqpn,
 535                                      struct hns_roce_qp *hr_qp)
 536 {
 537         struct device *dev = hr_dev->dev;
 538         struct hns_roce_ib_create_qp ucmd;
 539         struct hns_roce_ib_create_qp_resp resp = {};
 540         unsigned long qpn = 0;
 541         int ret = 0;
 542         u32 page_shift;
 543         u32 npages;
 544         int i;
 545
 546         mutex_init(&hr_qp->mutex);
 547         spin_lock_init(&hr_qp->sq.lock);
 548         spin_lock_init(&hr_qp->rq.lock);
 549
 550         hr_qp->state = IB_QPS_RESET;
 551
 552         hr_qp->ibqp.qp_type = init_attr->qp_type;
 553
 554         if (init_attr->sq_sig_type == IB_SIGNAL_ALL_WR)
 555                 hr_qp->sq_signal_bits = cpu_to_le32(IB_SIGNAL_ALL_WR);
 556         else
 557                 hr_qp->sq_signal_bits = cpu_to_le32(IB_SIGNAL_REQ_WR);
 558
 559         ret = hns_roce_set_rq_size(hr_dev, &init_attr->cap, !!ib_pd->uobject,
 560                                    !!init_attr->srq, hr_qp);
 561         if (ret) {
 562                 dev_err(dev, "hns_roce_set_rq_size failed\n");
 563                 goto err_out;
 564         }
 565
 566         if (hr_dev->caps.flags & HNS_ROCE_CAP_FLAG_RQ_INLINE) {
 567                 /* allocate recv inline buf */
 568                 hr_qp->rq_inl_buf.wqe_list = kcalloc(hr_qp->rq.wqe_cnt,
 569                                                sizeof(struct hns_roce_rinl_wqe),
 570                                                GFP_KERNEL);
 571                 if (!hr_qp->rq_inl_buf.wqe_list) {
 572                         ret = -ENOMEM;
 573                         goto err_out;
 574                 }
 575
 576                 hr_qp->rq_inl_buf.wqe_cnt = hr_qp->rq.wqe_cnt;
 577
 578                 /* Firstly, allocate a list of sge space buffer */
 579                 hr_qp->rq_inl_buf.wqe_list[0].sg_list =
 580                                         kcalloc(hr_qp->rq_inl_buf.wqe_cnt,
 581                                                init_attr->cap.max_recv_sge *
 582                                                sizeof(struct hns_roce_rinl_sge),
 583                                                GFP_KERNEL);
 584                 if (!hr_qp->rq_inl_buf.wqe_list[0].sg_list) {
 585                         ret = -ENOMEM;
 586                         goto err_wqe_list;
 587                 }
 588
 589                 for (i = 1; i < hr_qp->rq_inl_buf.wqe_cnt; i++)
 590                         /* Secondly, reallocate the buffer */
 591                         hr_qp->rq_inl_buf.wqe_list[i].sg_list =
 592                                 &hr_qp->rq_inl_buf.wqe_list[0].sg_list[i *
 593                                 init_attr->cap.max_recv_sge];
 594         }
 595
 596         if (ib_pd->uobject) {
 597                 if (ib_copy_from_udata(&ucmd, udata, sizeof(ucmd))) {
 598                         dev_err(dev, "ib_copy_from_udata error for create qp\n");
 599                         ret = -EFAULT;
 600                         goto err_rq_sge_list;
 601                 }
 602
 603                 ret = hns_roce_set_user_sq_size(hr_dev, &init_attr->cap, hr_qp,
 604                                                 &ucmd);
 605                 if (ret) {
 606                         dev_err(dev, "hns_roce_set_user_sq_size error for create qp\n");
 607                         goto err_rq_sge_list;
 608                 }
 609
 610                 hr_qp->umem = ib_umem_get(ib_pd->uobject->context,
 611                                           ucmd.buf_addr, hr_qp->buff_size, 0,
 612                                           0);
 613                 if (IS_ERR(hr_qp->umem)) {
 614                         dev_err(dev, "ib_umem_get error for create qp\n");
 615                         ret = PTR_ERR(hr_qp->umem);
 616                         goto err_rq_sge_list;
 617                 }
 618
 619                 hr_qp->mtt.mtt_type = MTT_TYPE_WQE;
 620                 if (hr_dev->caps.mtt_buf_pg_sz) {
 621                         npages = (ib_umem_page_count(hr_qp->umem) +
 622                                   (1 << hr_dev->caps.mtt_buf_pg_sz) - 1) /
 623                                   (1 << hr_dev->caps.mtt_buf_pg_sz);
 624                         page_shift = PAGE_SHIFT + hr_dev->caps.mtt_buf_pg_sz;
 625                         ret = hns_roce_mtt_init(hr_dev, npages,
 626                                     page_shift,
 627                                     &hr_qp->mtt);
 628                 } else {
 629                         ret = hns_roce_mtt_init(hr_dev,
 630                                     ib_umem_page_count(hr_qp->umem),
 631                                     hr_qp->umem->page_shift,
 632                                     &hr_qp->mtt);
 633                 }
 634                 if (ret) {
 635                         dev_err(dev, "hns_roce_mtt_init error for create qp\n");
 636                         goto err_buf;
 637                 }
 638
 639                 ret = hns_roce_ib_umem_write_mtt(hr_dev, &hr_qp->mtt,
 640                                                  hr_qp->umem);
 641                 if (ret) {
 642                         dev_err(dev, "hns_roce_ib_umem_write_mtt error for create qp\n");
 643                         goto err_mtt;
 644                 }
 645
 646                 if ((hr_dev->caps.flags & HNS_ROCE_CAP_FLAG_SQ_RECORD_DB) &&
 647                     (udata->inlen >= sizeof(ucmd)) &&
 648                     (udata->outlen >= sizeof(resp)) &&
 649                     hns_roce_qp_has_sq(init_attr)) {
 650                         ret = hns_roce_db_map_user(
 651                                         to_hr_ucontext(ib_pd->uobject->context),
 652                                         ucmd.sdb_addr, &hr_qp->sdb);
 653                         if (ret) {
 654                                 dev_err(dev, "sq record doorbell map failed!\n");
 655                                 goto err_mtt;
 656                         }
 657
 658                         /* indicate kernel supports sq record db */
 659                         resp.cap_flags |= HNS_ROCE_SUPPORT_SQ_RECORD_DB;
 660                         hr_qp->sdb_en = 1;
 661                 }
 662
 663                 if ((hr_dev->caps.flags & HNS_ROCE_CAP_FLAG_RECORD_DB) &&
 664                     (udata->outlen >= sizeof(resp)) &&
 665                     hns_roce_qp_has_rq(init_attr)) {
 666                         ret = hns_roce_db_map_user(
 667                                         to_hr_ucontext(ib_pd->uobject->context),
 668                                         ucmd.db_addr, &hr_qp->rdb);
 669                         if (ret) {
 670                                 dev_err(dev, "rq record doorbell map failed!\n");
 671                                 goto err_sq_dbmap;
 672                         }
 673                 }
 674         } else {
 675                 if (init_attr->create_flags &
 676                     IB_QP_CREATE_BLOCK_MULTICAST_LOOPBACK) {
 677                         dev_err(dev, "init_attr->create_flags error!\n");
 678                         ret = -EINVAL;
 679                         goto err_rq_sge_list;
 680                 }
 681
 682                 if (init_attr->create_flags & IB_QP_CREATE_IPOIB_UD_LSO) {
 683                         dev_err(dev, "init_attr->create_flags error!\n");
 684                         ret = -EINVAL;
 685                         goto err_rq_sge_list;
 686                 }
 687
 688                 /* Set SQ size */
 689                 ret = hns_roce_set_kernel_sq_size(hr_dev, &init_attr->cap,
 690                                                   hr_qp);
 691                 if (ret) {
 692                         dev_err(dev, "hns_roce_set_kernel_sq_size error!\n");
 693                         goto err_rq_sge_list;
 694                 }
 695
 696                 /* QP doorbell register address */
 697                 hr_qp->sq.db_reg_l = hr_dev->reg_base + hr_dev->sdb_offset +
 698                                      DB_REG_OFFSET * hr_dev->priv_uar.index;
 699                 hr_qp->rq.db_reg_l = hr_dev->reg_base + hr_dev->odb_offset +
 700                                      DB_REG_OFFSET * hr_dev->priv_uar.index;
 701
 702                 if ((hr_dev->caps.flags & HNS_ROCE_CAP_FLAG_RECORD_DB) &&
 703                     hns_roce_qp_has_rq(init_attr)) {
 704                         ret = hns_roce_alloc_db(hr_dev, &hr_qp->rdb, 0);
 705                         if (ret) {
 706                                 dev_err(dev, "rq record doorbell alloc failed!\n");
 707                                 goto err_rq_sge_list;
 708                         }
 709                         *hr_qp->rdb.db_record = 0;
 710                         hr_qp->rdb_en = 1;
 711                 }
 712
 713                 /* Allocate QP buf */
 714                 page_shift = PAGE_SHIFT + hr_dev->caps.mtt_buf_pg_sz;
 715                 if (hns_roce_buf_alloc(hr_dev, hr_qp->buff_size,
 716                                        (1 << page_shift) * 2,
 717                                        &hr_qp->hr_buf, page_shift)) {
 718                         dev_err(dev, "hns_roce_buf_alloc error!\n");
 719                         ret = -ENOMEM;
 720                         goto err_db;
 721                 }
 722
 723                 hr_qp->mtt.mtt_type = MTT_TYPE_WQE;
 724                 /* Write MTT */
 725                 ret = hns_roce_mtt_init(hr_dev, hr_qp->hr_buf.npages,
 726                                         hr_qp->hr_buf.page_shift, &hr_qp->mtt);
 727                 if (ret) {
 728                         dev_err(dev, "hns_roce_mtt_init error for kernel create qp\n");
 729                         goto err_buf;
 730                 }
 731
 732                 ret = hns_roce_buf_write_mtt(hr_dev, &hr_qp->mtt,
 733                                              &hr_qp->hr_buf);
 734                 if (ret) {
 735                         dev_err(dev, "hns_roce_buf_write_mtt error for kernel create qp\n");
 736                         goto err_mtt;
 737                 }
 738
 739                 hr_qp->sq.wrid = kmalloc_array(hr_qp->sq.wqe_cnt, sizeof(u64),
 740                                                GFP_KERNEL);
 741                 hr_qp->rq.wrid = kmalloc_array(hr_qp->rq.wqe_cnt, sizeof(u64),
 742                                                GFP_KERNEL);
 743                 if (!hr_qp->sq.wrid || !hr_qp->rq.wrid) {
 744                         ret = -ENOMEM;
 745                         goto err_wrid;
 746                 }
 747         }
 748
 749         if (sqpn) {
 750                 qpn = sqpn;
 751         } else {
 752                 /* Get QPN */
 753                 ret = hns_roce_reserve_range_qp(hr_dev, 1, 1, &qpn);
 754                 if (ret) {
 755                         dev_err(dev, "hns_roce_reserve_range_qp alloc qpn error\n");
 756                         goto err_wrid;
 757                 }
 758         }
 759
 760         if (init_attr->qp_type == IB_QPT_GSI &&
 761             hr_dev->hw_rev == HNS_ROCE_HW_VER1) {
 762                 /* In v1 engine, GSI QP context in RoCE engine's register */
 763                 ret = hns_roce_gsi_qp_alloc(hr_dev, qpn, hr_qp);
 764                 if (ret) {
 765                         dev_err(dev, "hns_roce_qp_alloc failed!\n");
 766                         goto err_qpn;
 767                 }
 768         } else {
 769                 ret = hns_roce_qp_alloc(hr_dev, qpn, hr_qp);
 770                 if (ret) {
 771                         dev_err(dev, "hns_roce_qp_alloc failed!\n");
 772                         goto err_qpn;
 773                 }
 774         }
 775
 776         if (sqpn)
 777                 hr_qp->doorbell_qpn = 1;
 778         else
 779                 hr_qp->doorbell_qpn = cpu_to_le64(hr_qp->qpn);
 780
 781         if (ib_pd->uobject && (udata->outlen >= sizeof(resp)) &&
 782                 (hr_dev->caps.flags & HNS_ROCE_CAP_FLAG_RECORD_DB)) {
 783
 784                 /* indicate kernel supports rq record db */
 785                 resp.cap_flags |= HNS_ROCE_SUPPORT_RQ_RECORD_DB;
 786                 ret = ib_copy_to_udata(udata, &resp, sizeof(resp));
 787                 if (ret)
 788                         goto err_qp;
 789
 790                 hr_qp->rdb_en = 1;
 791         }
 792         hr_qp->event = hns_roce_ib_qp_event;
 793
 794         return 0;
 795
 796 err_qp:
 797         if (init_attr->qp_type == IB_QPT_GSI &&
 798                 hr_dev->hw_rev == HNS_ROCE_HW_VER1)
 799                 hns_roce_qp_remove(hr_dev, hr_qp);
 800         else
 801                 hns_roce_qp_free(hr_dev, hr_qp);
 802
 803 err_qpn:
 804         if (!sqpn)
 805                 hns_roce_release_range_qp(hr_dev, qpn, 1);
 806
 807 err_wrid:
 808         if (ib_pd->uobject) {
 809                 if ((hr_dev->caps.flags & HNS_ROCE_CAP_FLAG_RECORD_DB) &&
 810                     (udata->outlen >= sizeof(resp)) &&
 811                     hns_roce_qp_has_rq(init_attr))
 812                         hns_roce_db_unmap_user(
 813                                         to_hr_ucontext(ib_pd->uobject->context),
 814                                         &hr_qp->rdb);
 815         } else {
 816                 kfree(hr_qp->sq.wrid);
 817                 kfree(hr_qp->rq.wrid);
 818         }
 819
 820 err_sq_dbmap:
 821         if (ib_pd->uobject)
 822                 if ((hr_dev->caps.flags & HNS_ROCE_CAP_FLAG_SQ_RECORD_DB) &&
 823                     (udata->inlen >= sizeof(ucmd)) &&
 824                     (udata->outlen >= sizeof(resp)) &&
 825                     hns_roce_qp_has_sq(init_attr))
 826                         hns_roce_db_unmap_user(
 827                                         to_hr_ucontext(ib_pd->uobject->context),
 828                                         &hr_qp->sdb);
 829
 830 err_mtt:
 831         hns_roce_mtt_cleanup(hr_dev, &hr_qp->mtt);
 832
 833 err_buf:
 834         if (ib_pd->uobject)
 835                 ib_umem_release(hr_qp->umem);
 836         else
 837                 hns_roce_buf_free(hr_dev, hr_qp->buff_size, &hr_qp->hr_buf);
 838
 839 err_db:
 840         if (!ib_pd->uobject && hns_roce_qp_has_rq(init_attr) &&
 841             (hr_dev->caps.flags & HNS_ROCE_CAP_FLAG_RECORD_DB))
 842                 hns_roce_free_db(hr_dev, &hr_qp->rdb);
 843
 844 err_rq_sge_list:
 845         if (hr_dev->caps.flags & HNS_ROCE_CAP_FLAG_RQ_INLINE)
 846                 kfree(hr_qp->rq_inl_buf.wqe_list[0].sg_list);
 847
 848 err_wqe_list:
 849         if (hr_dev->caps.flags & HNS_ROCE_CAP_FLAG_RQ_INLINE)
 850                 kfree(hr_qp->rq_inl_buf.wqe_list);
 851
 852 err_out:
 853         return ret;
 854 }
 855
 856 struct ib_qp *hns_roce_create_qp(struct ib_pd *pd,
 857                                  struct ib_qp_init_attr *init_attr,
 858                                  struct ib_udata *udata)
 859 {
 860         struct hns_roce_dev *hr_dev = to_hr_dev(pd->device);
 861         struct device *dev = hr_dev->dev;
 862         struct hns_roce_sqp *hr_sqp;
 863         struct hns_roce_qp *hr_qp;
 864         int ret;
 865
 866         switch (init_attr->qp_type) {
 867         case IB_QPT_RC: {
 868                 hr_qp = kzalloc(sizeof(*hr_qp), GFP_KERNEL);
 869                 if (!hr_qp)
 870                         return ERR_PTR(-ENOMEM);
 871
 872                 ret = hns_roce_create_qp_common(hr_dev, pd, init_attr, udata, 0,
 873                                                 hr_qp);
 874                 if (ret) {
 875                         dev_err(dev, "Create RC QP failed\n");
 876                         kfree(hr_qp);
 877                         return ERR_PTR(ret);
 878                 }
 879
 880                 hr_qp->ibqp.qp_num = hr_qp->qpn;
 881
 882                 break;
 883         }
 884         case IB_QPT_GSI: {
 885                 /* Userspace is not allowed to create special QPs: */
 886                 if (pd->uobject) {
 887                         dev_err(dev, "not support usr space GSI\n");
 888                         return ERR_PTR(-EINVAL);
 889                 }
 890
 891                 hr_sqp = kzalloc(sizeof(*hr_sqp), GFP_KERNEL);
 892                 if (!hr_sqp)
 893                         return ERR_PTR(-ENOMEM);
 894
 895                 hr_qp = &hr_sqp->hr_qp;
 896                 hr_qp->port = init_attr->port_num - 1;
 897                 hr_qp->phy_port = hr_dev->iboe.phy_port[hr_qp->port];
 898
 899                 /* when hw version is v1, the sqpn is allocated */
 900                 if (hr_dev->caps.max_sq_sg <= 2)
 901                         hr_qp->ibqp.qp_num = HNS_ROCE_MAX_PORTS +
 902                                              hr_dev->iboe.phy_port[hr_qp->port];
 903                 else
 904                         hr_qp->ibqp.qp_num = 1;
 905
 906                 ret = hns_roce_create_qp_common(hr_dev, pd, init_attr, udata,
 907                                                 hr_qp->ibqp.qp_num, hr_qp);
 908                 if (ret) {
 909                         dev_err(dev, "Create GSI QP failed!\n");
 910                         kfree(hr_sqp);
 911                         return ERR_PTR(ret);
 912                 }
 913
 914                 break;
 915         }
 916         default:{
 917                 dev_err(dev, "not support QP type %d\n", init_attr->qp_type);
 918                 return ERR_PTR(-EINVAL);
 919         }
 920         }
 921
 922         return &hr_qp->ibqp;
 923 }
 924 EXPORT_SYMBOL_GPL(hns_roce_create_qp);
 925
 926 int to_hr_qp_type(int qp_type)
 927 {
 928         int transport_type;
 929
 930         if (qp_type == IB_QPT_RC)
 931                 transport_type = SERV_TYPE_RC;
 932         else if (qp_type == IB_QPT_UC)
 933                 transport_type = SERV_TYPE_UC;
 934         else if (qp_type == IB_QPT_UD)
 935                 transport_type = SERV_TYPE_UD;
 936         else if (qp_type == IB_QPT_GSI)
 937                 transport_type = SERV_TYPE_UD;
 938         else
 939                 transport_type = -1;
 940
 941         return transport_type;
 942 }
 943 EXPORT_SYMBOL_GPL(to_hr_qp_type);
 944
 945 int hns_roce_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
 946                        int attr_mask, struct ib_udata *udata)
 947 {
 948         struct hns_roce_dev *hr_dev = to_hr_dev(ibqp->device);
 949         struct hns_roce_qp *hr_qp = to_hr_qp(ibqp);
 950         enum ib_qp_state cur_state, new_state;
 951         struct device *dev = hr_dev->dev;
 952         int ret = -EINVAL;
 953         int p;
 954         enum ib_mtu active_mtu;
 955
 956         mutex_lock(&hr_qp->mutex);
 957
 958         cur_state = attr_mask & IB_QP_CUR_STATE ?
 959                     attr->cur_qp_state : (enum ib_qp_state)hr_qp->state;
 960         new_state = attr_mask & IB_QP_STATE ?
 961                     attr->qp_state : cur_state;
 962
 963         if (ibqp->uobject &&
 964             (attr_mask & IB_QP_STATE) && new_state == IB_QPS_ERR) {
 965                 if (hr_qp->sdb_en == 1) {
 966                         hr_qp->sq.head = *(int *)(hr_qp->sdb.virt_addr);
 967                         hr_qp->rq.head = *(int *)(hr_qp->rdb.virt_addr);
 968                 } else {
 969                         dev_warn(dev, "flush cqe is not supported in userspace!\n");
 970                         goto out;
 971                 }
 972         }
 973
 974         if (!ib_modify_qp_is_ok(cur_state, new_state, ibqp->qp_type, attr_mask,
 975                                 IB_LINK_LAYER_ETHERNET)) {
 976                 dev_err(dev, "ib_modify_qp_is_ok failed\n");
 977                 goto out;
 978         }
 979
 980         if ((attr_mask & IB_QP_PORT) &&
 981             (attr->port_num == 0 || attr->port_num > hr_dev->caps.num_ports)) {
 982                 dev_err(dev, "attr port_num invalid.attr->port_num=%d\n",
 983                         attr->port_num);
 984                 goto out;
 985         }
 986
 987         if (attr_mask & IB_QP_PKEY_INDEX) {
 988                 p = attr_mask & IB_QP_PORT ? (attr->port_num - 1) : hr_qp->port;
 989                 if (attr->pkey_index >= hr_dev->caps.pkey_table_len[p]) {
 990                         dev_err(dev, "attr pkey_index invalid.attr->pkey_index=%d\n",
 991                                 attr->pkey_index);
 992                         goto out;
 993                 }
 994         }
 995
 996         if (attr_mask & IB_QP_PATH_MTU) {
 997                 p = attr_mask & IB_QP_PORT ? (attr->port_num - 1) : hr_qp->port;
 998                 active_mtu = iboe_get_mtu(hr_dev->iboe.netdevs[p]->mtu);
 999
1000                 if ((hr_dev->caps.max_mtu == IB_MTU_4096 &&
1001                     attr->path_mtu > IB_MTU_4096) ||
1002                     (hr_dev->caps.max_mtu == IB_MTU_2048 &&
1003                     attr->path_mtu > IB_MTU_2048) ||
1004                     attr->path_mtu < IB_MTU_256 ||
1005                     attr->path_mtu > active_mtu) {
1006                         dev_err(dev, "attr path_mtu(%d)invalid while modify qp",
1007                                 attr->path_mtu);
1008                         goto out;
1009                 }
1010         }
1011
1012         if (attr_mask & IB_QP_MAX_QP_RD_ATOMIC &&
1013             attr->max_rd_atomic > hr_dev->caps.max_qp_init_rdma) {
1014                 dev_err(dev, "attr max_rd_atomic invalid.attr->max_rd_atomic=%d\n",
1015                         attr->max_rd_atomic);
1016                 goto out;
1017         }
1018
1019         if (attr_mask & IB_QP_MAX_DEST_RD_ATOMIC &&
1020             attr->max_dest_rd_atomic > hr_dev->caps.max_qp_dest_rdma) {
1021                 dev_err(dev, "attr max_dest_rd_atomic invalid.attr->max_dest_rd_atomic=%d\n",
1022                         attr->max_dest_rd_atomic);
1023                 goto out;
1024         }
1025
1026         if (cur_state == new_state && cur_state == IB_QPS_RESET) {
1027                 if (hr_dev->caps.min_wqes) {
1028                         ret = -EPERM;
1029                         dev_err(dev, "cur_state=%d new_state=%d\n", cur_state,
1030                                 new_state);
1031                 } else {
1032                         ret = 0;
1033                 }
1034
1035                 goto out;
1036         }
1037
1038         ret = hr_dev->hw->modify_qp(ibqp, attr, attr_mask, cur_state,
1039                                     new_state);
1040
1041 out:
1042         mutex_unlock(&hr_qp->mutex);
1043
1044         return ret;
1045 }
1046
1047 void hns_roce_lock_cqs(struct hns_roce_cq *send_cq, struct hns_roce_cq *recv_cq)
1048                        __acquires(&send_cq->lock) __acquires(&recv_cq->lock)
1049 {
1050         if (send_cq == recv_cq) {
1051                 spin_lock_irq(&send_cq->lock);
1052                 __acquire(&recv_cq->lock);
1053         } else if (send_cq->cqn < recv_cq->cqn) {
1054                 spin_lock_irq(&send_cq->lock);
1055                 spin_lock_nested(&recv_cq->lock, SINGLE_DEPTH_NESTING);
1056         } else {
1057                 spin_lock_irq(&recv_cq->lock);
1058                 spin_lock_nested(&send_cq->lock, SINGLE_DEPTH_NESTING);
1059         }
1060 }
1061 EXPORT_SYMBOL_GPL(hns_roce_lock_cqs);
1062
1063 void hns_roce_unlock_cqs(struct hns_roce_cq *send_cq,
1064                          struct hns_roce_cq *recv_cq) __releases(&send_cq->lock)
1065                          __releases(&recv_cq->lock)
1066 {
1067         if (send_cq == recv_cq) {
1068                 __release(&recv_cq->lock);
1069                 spin_unlock_irq(&send_cq->lock);
1070         } else if (send_cq->cqn < recv_cq->cqn) {
1071                 spin_unlock(&recv_cq->lock);
1072                 spin_unlock_irq(&send_cq->lock);
1073         } else {
1074                 spin_unlock(&send_cq->lock);
1075                 spin_unlock_irq(&recv_cq->lock);
1076         }
1077 }
1078 EXPORT_SYMBOL_GPL(hns_roce_unlock_cqs);
1079
1080 static void *get_wqe(struct hns_roce_qp *hr_qp, int offset)
1081 {
1082
1083         return hns_roce_buf_offset(&hr_qp->hr_buf, offset);
1084 }
1085
1086 void *get_recv_wqe(struct hns_roce_qp *hr_qp, int n)
1087 {
1088         return get_wqe(hr_qp, hr_qp->rq.offset + (n << hr_qp->rq.wqe_shift));
1089 }
1090 EXPORT_SYMBOL_GPL(get_recv_wqe);
1091
1092 void *get_send_wqe(struct hns_roce_qp *hr_qp, int n)
1093 {
1094         return get_wqe(hr_qp, hr_qp->sq.offset + (n << hr_qp->sq.wqe_shift));
1095 }
1096 EXPORT_SYMBOL_GPL(get_send_wqe);
1097
1098 void *get_send_extend_sge(struct hns_roce_qp *hr_qp, int n)
1099 {
1100         return hns_roce_buf_offset(&hr_qp->hr_buf, hr_qp->sge.offset +
1101                                         (n << hr_qp->sge.sge_shift));
1102 }
1103 EXPORT_SYMBOL_GPL(get_send_extend_sge);
1104
1105 bool hns_roce_wq_overflow(struct hns_roce_wq *hr_wq, int nreq,
1106                           struct ib_cq *ib_cq)
1107 {
1108         struct hns_roce_cq *hr_cq;
1109         u32 cur;
1110
1111         cur = hr_wq->head - hr_wq->tail;
1112         if (likely(cur + nreq < hr_wq->max_post))
1113                 return false;
1114
1115         hr_cq = to_hr_cq(ib_cq);
1116         spin_lock(&hr_cq->lock);
1117         cur = hr_wq->head - hr_wq->tail;
1118         spin_unlock(&hr_cq->lock);
1119
1120         return cur + nreq >= hr_wq->max_post;
1121 }
1122 EXPORT_SYMBOL_GPL(hns_roce_wq_overflow);
1123
1124 int hns_roce_init_qp_table(struct hns_roce_dev *hr_dev)
1125 {
1126         struct hns_roce_qp_table *qp_table = &hr_dev->qp_table;
1127         int reserved_from_top = 0;
1128         int reserved_from_bot;
1129         int ret;
1130
1131         spin_lock_init(&qp_table->lock);
1132         INIT_RADIX_TREE(&hr_dev->qp_table_tree, GFP_ATOMIC);
1133
1134         /* In hw v1, a port include two SQP, six ports total 12 */
1135         if (hr_dev->caps.max_sq_sg <= 2)
1136                 reserved_from_bot = SQP_NUM;
1137         else
1138                 reserved_from_bot = hr_dev->caps.reserved_qps;
1139
1140         ret = hns_roce_bitmap_init(&qp_table->bitmap, hr_dev->caps.num_qps,
1141                                    hr_dev->caps.num_qps - 1, reserved_from_bot,
1142                                    reserved_from_top);
1143         if (ret) {
1144                 dev_err(hr_dev->dev, "qp bitmap init failed!error=%d\n",
1145                         ret);
1146                 return ret;
1147         }
1148
1149         return 0;
1150 }
1151
1152 void hns_roce_cleanup_qp_table(struct hns_roce_dev *hr_dev)
1153 {
1154         hns_roce_bitmap_cleanup(&hr_dev->qp_table.bitmap);
1155 }