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                 hns_roce_table_put(hr_dev, &qp_table->qp_table, hr_qp->qpn);
 266         }
 267 }
 268 EXPORT_SYMBOL_GPL(hns_roce_qp_free);
 269
 270 void hns_roce_release_range_qp(struct hns_roce_dev *hr_dev, int base_qpn,
 271                                int cnt)
 272 {
 273         struct hns_roce_qp_table *qp_table = &hr_dev->qp_table;
 274
 275         if (base_qpn < SQP_NUM)
 276                 return;
 277
 278         hns_roce_bitmap_free_range(&qp_table->bitmap, base_qpn, cnt, BITMAP_RR);
 279 }
 280 EXPORT_SYMBOL_GPL(hns_roce_release_range_qp);
 281
 282 static int hns_roce_set_rq_size(struct hns_roce_dev *hr_dev,
 283                                 struct ib_qp_cap *cap, int is_user, int has_srq,
 284                                 struct hns_roce_qp *hr_qp)
 285 {
 286         struct device *dev = hr_dev->dev;
 287         u32 max_cnt;
 288
 289         /* Check the validity of QP support capacity */
 290         if (cap->max_recv_wr > hr_dev->caps.max_wqes ||
 291             cap->max_recv_sge > hr_dev->caps.max_rq_sg) {
 292                 dev_err(dev, "RQ WR or sge error!max_recv_wr=%d max_recv_sge=%d\n",
 293                         cap->max_recv_wr, cap->max_recv_sge);
 294                 return -EINVAL;
 295         }
 296
 297         /* If srq exit, set zero for relative number of rq */
 298         if (has_srq) {
 299                 if (cap->max_recv_wr) {
 300                         dev_dbg(dev, "srq no need config max_recv_wr\n");
 301                         return -EINVAL;
 302                 }
 303
 304                 hr_qp->rq.wqe_cnt = hr_qp->rq.max_gs = 0;
 305         } else {
 306                 if (is_user && (!cap->max_recv_wr || !cap->max_recv_sge)) {
 307                         dev_err(dev, "user space no need config max_recv_wr max_recv_sge\n");
 308                         return -EINVAL;
 309                 }
 310
 311                 if (hr_dev->caps.min_wqes)
 312                         max_cnt = max(cap->max_recv_wr, hr_dev->caps.min_wqes);
 313                 else
 314                         max_cnt = cap->max_recv_wr;
 315
 316                 hr_qp->rq.wqe_cnt = roundup_pow_of_two(max_cnt);
 317
 318                 if ((u32)hr_qp->rq.wqe_cnt > hr_dev->caps.max_wqes) {
 319                         dev_err(dev, "while setting rq size, rq.wqe_cnt too large\n");
 320                         return -EINVAL;
 321                 }
 322
 323                 max_cnt = max(1U, cap->max_recv_sge);
 324                 hr_qp->rq.max_gs = roundup_pow_of_two(max_cnt);
 325                 if (hr_dev->caps.max_rq_sg <= 2)
 326                         hr_qp->rq.wqe_shift =
 327                                         ilog2(hr_dev->caps.max_rq_desc_sz);
 328                 else
 329                         hr_qp->rq.wqe_shift =
 330                                         ilog2(hr_dev->caps.max_rq_desc_sz
 331                                               * hr_qp->rq.max_gs);
 332         }
 333
 334         cap->max_recv_wr = hr_qp->rq.max_post = hr_qp->rq.wqe_cnt;
 335         cap->max_recv_sge = hr_qp->rq.max_gs;
 336
 337         return 0;
 338 }
 339
 340 static int hns_roce_set_user_sq_size(struct hns_roce_dev *hr_dev,
 341                                      struct ib_qp_cap *cap,
 342                                      struct hns_roce_qp *hr_qp,
 343                                      struct hns_roce_ib_create_qp *ucmd)
 344 {
 345         u32 roundup_sq_stride = roundup_pow_of_two(hr_dev->caps.max_sq_desc_sz);
 346         u8 max_sq_stride = ilog2(roundup_sq_stride);
 347         u32 ex_sge_num;
 348         u32 page_size;
 349         u32 max_cnt;
 350
 351         /* Sanity check SQ size before proceeding */
 352         if ((u32)(1 << ucmd->log_sq_bb_count) > hr_dev->caps.max_wqes ||
 353              ucmd->log_sq_stride > max_sq_stride ||
 354              ucmd->log_sq_stride < HNS_ROCE_IB_MIN_SQ_STRIDE) {
 355                 dev_err(hr_dev->dev, "check SQ size error!\n");
 356                 return -EINVAL;
 357         }
 358
 359         if (cap->max_send_sge > hr_dev->caps.max_sq_sg) {
 360                 dev_err(hr_dev->dev, "SQ sge error! max_send_sge=%d\n",
 361                         cap->max_send_sge);
 362                 return -EINVAL;
 363         }
 364
 365         hr_qp->sq.wqe_cnt = 1 << ucmd->log_sq_bb_count;
 366         hr_qp->sq.wqe_shift = ucmd->log_sq_stride;
 367
 368         max_cnt = max(1U, cap->max_send_sge);
 369         if (hr_dev->caps.max_sq_sg <= 2)
 370                 hr_qp->sq.max_gs = roundup_pow_of_two(max_cnt);
 371         else
 372                 hr_qp->sq.max_gs = max_cnt;
 373
 374         if (hr_qp->sq.max_gs > 2)
 375                 hr_qp->sge.sge_cnt = roundup_pow_of_two(hr_qp->sq.wqe_cnt *
 376                                                         (hr_qp->sq.max_gs - 2));
 377
 378         if ((hr_qp->sq.max_gs > 2) && (hr_dev->pci_dev->revision == 0x20)) {
 379                 if (hr_qp->sge.sge_cnt > hr_dev->caps.max_extend_sg) {
 380                         dev_err(hr_dev->dev,
 381                                 "The extended sge cnt error! sge_cnt=%d\n",
 382                                 hr_qp->sge.sge_cnt);
 383                         return -EINVAL;
 384                 }
 385         }
 386
 387         hr_qp->sge.sge_shift = 4;
 388         ex_sge_num = hr_qp->sge.sge_cnt;
 389
 390         /* Get buf size, SQ and RQ  are aligned to page_szie */
 391         if (hr_dev->caps.max_sq_sg <= 2) {
 392                 hr_qp->buff_size = HNS_ROCE_ALOGN_UP((hr_qp->rq.wqe_cnt <<
 393                                              hr_qp->rq.wqe_shift), PAGE_SIZE) +
 394                                    HNS_ROCE_ALOGN_UP((hr_qp->sq.wqe_cnt <<
 395                                              hr_qp->sq.wqe_shift), PAGE_SIZE);
 396
 397                 hr_qp->sq.offset = 0;
 398                 hr_qp->rq.offset = HNS_ROCE_ALOGN_UP((hr_qp->sq.wqe_cnt <<
 399                                              hr_qp->sq.wqe_shift), PAGE_SIZE);
 400         } else {
 401                 page_size = 1 << (hr_dev->caps.mtt_buf_pg_sz + PAGE_SHIFT);
 402                 hr_qp->sge.sge_cnt =
 403                        max(page_size / (1 << hr_qp->sge.sge_shift), ex_sge_num);
 404                 hr_qp->buff_size = HNS_ROCE_ALOGN_UP((hr_qp->rq.wqe_cnt <<
 405                                              hr_qp->rq.wqe_shift), page_size) +
 406                                    HNS_ROCE_ALOGN_UP((hr_qp->sge.sge_cnt <<
 407                                              hr_qp->sge.sge_shift), page_size) +
 408                                    HNS_ROCE_ALOGN_UP((hr_qp->sq.wqe_cnt <<
 409                                              hr_qp->sq.wqe_shift), page_size);
 410
 411                 hr_qp->sq.offset = 0;
 412                 if (ex_sge_num) {
 413                         hr_qp->sge.offset = HNS_ROCE_ALOGN_UP(
 414                                                         (hr_qp->sq.wqe_cnt <<
 415                                                         hr_qp->sq.wqe_shift),
 416                                                         page_size);
 417                         hr_qp->rq.offset = hr_qp->sge.offset +
 418                                         HNS_ROCE_ALOGN_UP((hr_qp->sge.sge_cnt <<
 419                                                 hr_qp->sge.sge_shift),
 420                                                 page_size);
 421                 } else {
 422                         hr_qp->rq.offset = HNS_ROCE_ALOGN_UP(
 423                                                         (hr_qp->sq.wqe_cnt <<
 424                                                         hr_qp->sq.wqe_shift),
 425                                                         page_size);
 426                 }
 427         }
 428
 429         return 0;
 430 }
 431
 432 static int hns_roce_set_kernel_sq_size(struct hns_roce_dev *hr_dev,
 433                                        struct ib_qp_cap *cap,
 434                                        struct hns_roce_qp *hr_qp)
 435 {
 436         struct device *dev = hr_dev->dev;
 437         u32 page_size;
 438         u32 max_cnt;
 439         int size;
 440
 441         if (cap->max_send_wr  > hr_dev->caps.max_wqes  ||
 442             cap->max_send_sge > hr_dev->caps.max_sq_sg ||
 443             cap->max_inline_data > hr_dev->caps.max_sq_inline) {
 444                 dev_err(dev, "SQ WR or sge or inline data error!\n");
 445                 return -EINVAL;
 446         }
 447
 448         hr_qp->sq.wqe_shift = ilog2(hr_dev->caps.max_sq_desc_sz);
 449         hr_qp->sq_max_wqes_per_wr = 1;
 450         hr_qp->sq_spare_wqes = 0;
 451
 452         if (hr_dev->caps.min_wqes)
 453                 max_cnt = max(cap->max_send_wr, hr_dev->caps.min_wqes);
 454         else
 455                 max_cnt = cap->max_send_wr;
 456
 457         hr_qp->sq.wqe_cnt = roundup_pow_of_two(max_cnt);
 458         if ((u32)hr_qp->sq.wqe_cnt > hr_dev->caps.max_wqes) {
 459                 dev_err(dev, "while setting kernel sq size, sq.wqe_cnt too large\n");
 460                 return -EINVAL;
 461         }
 462
 463         /* Get data_seg numbers */
 464         max_cnt = max(1U, cap->max_send_sge);
 465         if (hr_dev->caps.max_sq_sg <= 2)
 466                 hr_qp->sq.max_gs = roundup_pow_of_two(max_cnt);
 467         else
 468                 hr_qp->sq.max_gs = max_cnt;
 469
 470         if (hr_qp->sq.max_gs > 2) {
 471                 hr_qp->sge.sge_cnt = roundup_pow_of_two(hr_qp->sq.wqe_cnt *
 472                                      (hr_qp->sq.max_gs - 2));
 473                 hr_qp->sge.sge_shift = 4;
 474         }
 475
 476         /* ud sqwqe's sge use extend sge */
 477         if (hr_dev->caps.max_sq_sg > 2 && hr_qp->ibqp.qp_type == IB_QPT_GSI) {
 478                 hr_qp->sge.sge_cnt = roundup_pow_of_two(hr_qp->sq.wqe_cnt *
 479                                      hr_qp->sq.max_gs);
 480                 hr_qp->sge.sge_shift = 4;
 481         }
 482
 483         if ((hr_qp->sq.max_gs > 2) && hr_dev->pci_dev->revision == 0x20) {
 484                 if (hr_qp->sge.sge_cnt > hr_dev->caps.max_extend_sg) {
 485                         dev_err(dev, "The extended sge cnt error! sge_cnt=%d\n",
 486                                 hr_qp->sge.sge_cnt);
 487                         return -EINVAL;
 488                 }
 489         }
 490
 491         /* Get buf size, SQ and RQ are aligned to PAGE_SIZE */
 492         page_size = 1 << (hr_dev->caps.mtt_buf_pg_sz + PAGE_SHIFT);
 493         hr_qp->sq.offset = 0;
 494         size = HNS_ROCE_ALOGN_UP(hr_qp->sq.wqe_cnt << hr_qp->sq.wqe_shift,
 495                                  page_size);
 496
 497         if (hr_dev->caps.max_sq_sg > 2 && hr_qp->sge.sge_cnt) {
 498                 hr_qp->sge.sge_cnt = max(page_size/(1 << hr_qp->sge.sge_shift),
 499                                         (u32)hr_qp->sge.sge_cnt);
 500                 hr_qp->sge.offset = size;
 501                 size += HNS_ROCE_ALOGN_UP(hr_qp->sge.sge_cnt <<
 502                                           hr_qp->sge.sge_shift, page_size);
 503         }
 504
 505         hr_qp->rq.offset = size;
 506         size += HNS_ROCE_ALOGN_UP((hr_qp->rq.wqe_cnt << hr_qp->rq.wqe_shift),
 507                                   page_size);
 508         hr_qp->buff_size = size;
 509
 510         /* Get wr and sge number which send */
 511         cap->max_send_wr = hr_qp->sq.max_post = hr_qp->sq.wqe_cnt;
 512         cap->max_send_sge = hr_qp->sq.max_gs;
 513
 514         /* We don't support inline sends for kernel QPs (yet) */
 515         cap->max_inline_data = 0;
 516
 517         return 0;
 518 }
 519
 520 static int hns_roce_qp_has_sq(struct ib_qp_init_attr *attr)
 521 {
 522         if (attr->qp_type == IB_QPT_XRC_TGT)
 523                 return 0;
 524
 525         return 1;
 526 }
 527
 528 static int hns_roce_qp_has_rq(struct ib_qp_init_attr *attr)
 529 {
 530         if (attr->qp_type == IB_QPT_XRC_INI ||
 531             attr->qp_type == IB_QPT_XRC_TGT || attr->srq)
 532                 return 0;
 533
 534         return 1;
 535 }
 536
 537 static int hns_roce_create_qp_common(struct hns_roce_dev *hr_dev,
 538                                      struct ib_pd *ib_pd,
 539                                      struct ib_qp_init_attr *init_attr,
 540                                      struct ib_udata *udata, unsigned long sqpn,
 541                                      struct hns_roce_qp *hr_qp)
 542 {
 543         struct device *dev = hr_dev->dev;
 544         struct hns_roce_ib_create_qp ucmd;
 545         struct hns_roce_ib_create_qp_resp resp = {};
 546         unsigned long qpn = 0;
 547         int ret = 0;
 548         u32 page_shift;
 549         u32 npages;
 550         int i;
 551
 552         mutex_init(&hr_qp->mutex);
 553         spin_lock_init(&hr_qp->sq.lock);
 554         spin_lock_init(&hr_qp->rq.lock);
 555
 556         hr_qp->state = IB_QPS_RESET;
 557
 558         hr_qp->ibqp.qp_type = init_attr->qp_type;
 559
 560         if (init_attr->sq_sig_type == IB_SIGNAL_ALL_WR)
 561                 hr_qp->sq_signal_bits = cpu_to_le32(IB_SIGNAL_ALL_WR);
 562         else
 563                 hr_qp->sq_signal_bits = cpu_to_le32(IB_SIGNAL_REQ_WR);
 564
 565         ret = hns_roce_set_rq_size(hr_dev, &init_attr->cap, !!ib_pd->uobject,
 566                                    !!init_attr->srq, hr_qp);
 567         if (ret) {
 568                 dev_err(dev, "hns_roce_set_rq_size failed\n");
 569                 goto err_out;
 570         }
 571
 572         if (hr_dev->caps.flags & HNS_ROCE_CAP_FLAG_RQ_INLINE) {
 573                 /* allocate recv inline buf */
 574                 hr_qp->rq_inl_buf.wqe_list = kcalloc(hr_qp->rq.wqe_cnt,
 575                                                sizeof(struct hns_roce_rinl_wqe),
 576                                                GFP_KERNEL);
 577                 if (!hr_qp->rq_inl_buf.wqe_list) {
 578                         ret = -ENOMEM;
 579                         goto err_out;
 580                 }
 581
 582                 hr_qp->rq_inl_buf.wqe_cnt = hr_qp->rq.wqe_cnt;
 583
 584                 /* Firstly, allocate a list of sge space buffer */
 585                 hr_qp->rq_inl_buf.wqe_list[0].sg_list =
 586                                         kcalloc(hr_qp->rq_inl_buf.wqe_cnt,
 587                                                init_attr->cap.max_recv_sge *
 588                                                sizeof(struct hns_roce_rinl_sge),
 589                                                GFP_KERNEL);
 590                 if (!hr_qp->rq_inl_buf.wqe_list[0].sg_list) {
 591                         ret = -ENOMEM;
 592                         goto err_wqe_list;
 593                 }
 594
 595                 for (i = 1; i < hr_qp->rq_inl_buf.wqe_cnt; i++)
 596                         /* Secondly, reallocate the buffer */
 597                         hr_qp->rq_inl_buf.wqe_list[i].sg_list =
 598                                 &hr_qp->rq_inl_buf.wqe_list[0].sg_list[i *
 599                                 init_attr->cap.max_recv_sge];
 600         }
 601
 602         if (ib_pd->uobject) {
 603                 if (ib_copy_from_udata(&ucmd, udata, sizeof(ucmd))) {
 604                         dev_err(dev, "ib_copy_from_udata error for create qp\n");
 605                         ret = -EFAULT;
 606                         goto err_rq_sge_list;
 607                 }
 608
 609                 ret = hns_roce_set_user_sq_size(hr_dev, &init_attr->cap, hr_qp,
 610                                                 &ucmd);
 611                 if (ret) {
 612                         dev_err(dev, "hns_roce_set_user_sq_size error for create qp\n");
 613                         goto err_rq_sge_list;
 614                 }
 615
 616                 hr_qp->umem = ib_umem_get(ib_pd->uobject->context,
 617                                           ucmd.buf_addr, hr_qp->buff_size, 0,
 618                                           0);
 619                 if (IS_ERR(hr_qp->umem)) {
 620                         dev_err(dev, "ib_umem_get error for create qp\n");
 621                         ret = PTR_ERR(hr_qp->umem);
 622                         goto err_rq_sge_list;
 623                 }
 624
 625                 hr_qp->mtt.mtt_type = MTT_TYPE_WQE;
 626                 if (hr_dev->caps.mtt_buf_pg_sz) {
 627                         npages = (ib_umem_page_count(hr_qp->umem) +
 628                                   (1 << hr_dev->caps.mtt_buf_pg_sz) - 1) /
 629                                   (1 << hr_dev->caps.mtt_buf_pg_sz);
 630                         page_shift = PAGE_SHIFT + hr_dev->caps.mtt_buf_pg_sz;
 631                         ret = hns_roce_mtt_init(hr_dev, npages,
 632                                     page_shift,
 633                                     &hr_qp->mtt);
 634                 } else {
 635                         ret = hns_roce_mtt_init(hr_dev,
 636                                     ib_umem_page_count(hr_qp->umem),
 637                                     hr_qp->umem->page_shift,
 638                                     &hr_qp->mtt);
 639                 }
 640                 if (ret) {
 641                         dev_err(dev, "hns_roce_mtt_init error for create qp\n");
 642                         goto err_buf;
 643                 }
 644
 645                 ret = hns_roce_ib_umem_write_mtt(hr_dev, &hr_qp->mtt,
 646                                                  hr_qp->umem);
 647                 if (ret) {
 648                         dev_err(dev, "hns_roce_ib_umem_write_mtt error for create qp\n");
 649                         goto err_mtt;
 650                 }
 651
 652                 if ((hr_dev->caps.flags & HNS_ROCE_CAP_FLAG_SQ_RECORD_DB) &&
 653                     (udata->inlen >= sizeof(ucmd)) &&
 654                     (udata->outlen >= sizeof(resp)) &&
 655                     hns_roce_qp_has_sq(init_attr)) {
 656                         ret = hns_roce_db_map_user(
 657                                         to_hr_ucontext(ib_pd->uobject->context),
 658                                         ucmd.sdb_addr, &hr_qp->sdb);
 659                         if (ret) {
 660                                 dev_err(dev, "sq record doorbell map failed!\n");
 661                                 goto err_mtt;
 662                         }
 663
 664                         /* indicate kernel supports sq record db */
 665                         resp.cap_flags |= HNS_ROCE_SUPPORT_SQ_RECORD_DB;
 666                         hr_qp->sdb_en = 1;
 667                 }
 668
 669                 if ((hr_dev->caps.flags & HNS_ROCE_CAP_FLAG_RECORD_DB) &&
 670                     (udata->outlen >= sizeof(resp)) &&
 671                     hns_roce_qp_has_rq(init_attr)) {
 672                         ret = hns_roce_db_map_user(
 673                                         to_hr_ucontext(ib_pd->uobject->context),
 674                                         ucmd.db_addr, &hr_qp->rdb);
 675                         if (ret) {
 676                                 dev_err(dev, "rq record doorbell map failed!\n");
 677                                 goto err_sq_dbmap;
 678                         }
 679                 }
 680         } else {
 681                 if (init_attr->create_flags &
 682                     IB_QP_CREATE_BLOCK_MULTICAST_LOOPBACK) {
 683                         dev_err(dev, "init_attr->create_flags error!\n");
 684                         ret = -EINVAL;
 685                         goto err_rq_sge_list;
 686                 }
 687
 688                 if (init_attr->create_flags & IB_QP_CREATE_IPOIB_UD_LSO) {
 689                         dev_err(dev, "init_attr->create_flags error!\n");
 690                         ret = -EINVAL;
 691                         goto err_rq_sge_list;
 692                 }
 693
 694                 /* Set SQ size */
 695                 ret = hns_roce_set_kernel_sq_size(hr_dev, &init_attr->cap,
 696                                                   hr_qp);
 697                 if (ret) {
 698                         dev_err(dev, "hns_roce_set_kernel_sq_size error!\n");
 699                         goto err_rq_sge_list;
 700                 }
 701
 702                 /* QP doorbell register address */
 703                 hr_qp->sq.db_reg_l = hr_dev->reg_base + hr_dev->sdb_offset +
 704                                      DB_REG_OFFSET * hr_dev->priv_uar.index;
 705                 hr_qp->rq.db_reg_l = hr_dev->reg_base + hr_dev->odb_offset +
 706                                      DB_REG_OFFSET * hr_dev->priv_uar.index;
 707
 708                 if ((hr_dev->caps.flags & HNS_ROCE_CAP_FLAG_RECORD_DB) &&
 709                     hns_roce_qp_has_rq(init_attr)) {
 710                         ret = hns_roce_alloc_db(hr_dev, &hr_qp->rdb, 0);
 711                         if (ret) {
 712                                 dev_err(dev, "rq record doorbell alloc failed!\n");
 713                                 goto err_rq_sge_list;
 714                         }
 715                         *hr_qp->rdb.db_record = 0;
 716                         hr_qp->rdb_en = 1;
 717                 }
 718
 719                 /* Allocate QP buf */
 720                 page_shift = PAGE_SHIFT + hr_dev->caps.mtt_buf_pg_sz;
 721                 if (hns_roce_buf_alloc(hr_dev, hr_qp->buff_size,
 722                                        (1 << page_shift) * 2,
 723                                        &hr_qp->hr_buf, page_shift)) {
 724                         dev_err(dev, "hns_roce_buf_alloc error!\n");
 725                         ret = -ENOMEM;
 726                         goto err_db;
 727                 }
 728
 729                 hr_qp->mtt.mtt_type = MTT_TYPE_WQE;
 730                 /* Write MTT */
 731                 ret = hns_roce_mtt_init(hr_dev, hr_qp->hr_buf.npages,
 732                                         hr_qp->hr_buf.page_shift, &hr_qp->mtt);
 733                 if (ret) {
 734                         dev_err(dev, "hns_roce_mtt_init error for kernel create qp\n");
 735                         goto err_buf;
 736                 }
 737
 738                 ret = hns_roce_buf_write_mtt(hr_dev, &hr_qp->mtt,
 739                                              &hr_qp->hr_buf);
 740                 if (ret) {
 741                         dev_err(dev, "hns_roce_buf_write_mtt error for kernel create qp\n");
 742                         goto err_mtt;
 743                 }
 744
 745                 hr_qp->sq.wrid = kmalloc_array(hr_qp->sq.wqe_cnt, sizeof(u64),
 746                                                GFP_KERNEL);
 747                 hr_qp->rq.wrid = kmalloc_array(hr_qp->rq.wqe_cnt, sizeof(u64),
 748                                                GFP_KERNEL);
 749                 if (!hr_qp->sq.wrid || !hr_qp->rq.wrid) {
 750                         ret = -ENOMEM;
 751                         goto err_wrid;
 752                 }
 753         }
 754
 755         if (sqpn) {
 756                 qpn = sqpn;
 757         } else {
 758                 /* Get QPN */
 759                 ret = hns_roce_reserve_range_qp(hr_dev, 1, 1, &qpn);
 760                 if (ret) {
 761                         dev_err(dev, "hns_roce_reserve_range_qp alloc qpn error\n");
 762                         goto err_wrid;
 763                 }
 764         }
 765
 766         if (init_attr->qp_type == IB_QPT_GSI &&
 767             hr_dev->hw_rev == HNS_ROCE_HW_VER1) {
 768                 /* In v1 engine, GSI QP context in RoCE engine's register */
 769                 ret = hns_roce_gsi_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         } else {
 775                 ret = hns_roce_qp_alloc(hr_dev, qpn, hr_qp);
 776                 if (ret) {
 777                         dev_err(dev, "hns_roce_qp_alloc failed!\n");
 778                         goto err_qpn;
 779                 }
 780         }
 781
 782         if (sqpn)
 783                 hr_qp->doorbell_qpn = 1;
 784         else
 785                 hr_qp->doorbell_qpn = cpu_to_le64(hr_qp->qpn);
 786
 787         if (ib_pd->uobject && (udata->outlen >= sizeof(resp)) &&
 788                 (hr_dev->caps.flags & HNS_ROCE_CAP_FLAG_RECORD_DB)) {
 789
 790                 /* indicate kernel supports rq record db */
 791                 resp.cap_flags |= HNS_ROCE_SUPPORT_RQ_RECORD_DB;
 792                 ret = ib_copy_to_udata(udata, &resp, sizeof(resp));
 793                 if (ret)
 794                         goto err_qp;
 795
 796                 hr_qp->rdb_en = 1;
 797         }
 798         hr_qp->event = hns_roce_ib_qp_event;
 799
 800         return 0;
 801
 802 err_qp:
 803         if (init_attr->qp_type == IB_QPT_GSI &&
 804                 hr_dev->hw_rev == HNS_ROCE_HW_VER1)
 805                 hns_roce_qp_remove(hr_dev, hr_qp);
 806         else
 807                 hns_roce_qp_free(hr_dev, hr_qp);
 808
 809 err_qpn:
 810         if (!sqpn)
 811                 hns_roce_release_range_qp(hr_dev, qpn, 1);
 812
 813 err_wrid:
 814         if (ib_pd->uobject) {
 815                 if ((hr_dev->caps.flags & HNS_ROCE_CAP_FLAG_RECORD_DB) &&
 816                     (udata->outlen >= sizeof(resp)) &&
 817                     hns_roce_qp_has_rq(init_attr))
 818                         hns_roce_db_unmap_user(
 819                                         to_hr_ucontext(ib_pd->uobject->context),
 820                                         &hr_qp->rdb);
 821         } else {
 822                 kfree(hr_qp->sq.wrid);
 823                 kfree(hr_qp->rq.wrid);
 824         }
 825
 826 err_sq_dbmap:
 827         if (ib_pd->uobject)
 828                 if ((hr_dev->caps.flags & HNS_ROCE_CAP_FLAG_SQ_RECORD_DB) &&
 829                     (udata->inlen >= sizeof(ucmd)) &&
 830                     (udata->outlen >= sizeof(resp)) &&
 831                     hns_roce_qp_has_sq(init_attr))
 832                         hns_roce_db_unmap_user(
 833                                         to_hr_ucontext(ib_pd->uobject->context),
 834                                         &hr_qp->sdb);
 835
 836 err_mtt:
 837         hns_roce_mtt_cleanup(hr_dev, &hr_qp->mtt);
 838
 839 err_buf:
 840         if (ib_pd->uobject)
 841                 ib_umem_release(hr_qp->umem);
 842         else
 843                 hns_roce_buf_free(hr_dev, hr_qp->buff_size, &hr_qp->hr_buf);
 844
 845 err_db:
 846         if (!ib_pd->uobject && hns_roce_qp_has_rq(init_attr) &&
 847             (hr_dev->caps.flags & HNS_ROCE_CAP_FLAG_RECORD_DB))
 848                 hns_roce_free_db(hr_dev, &hr_qp->rdb);
 849
 850 err_rq_sge_list:
 851         if (hr_dev->caps.flags & HNS_ROCE_CAP_FLAG_RQ_INLINE)
 852                 kfree(hr_qp->rq_inl_buf.wqe_list[0].sg_list);
 853
 854 err_wqe_list:
 855         if (hr_dev->caps.flags & HNS_ROCE_CAP_FLAG_RQ_INLINE)
 856                 kfree(hr_qp->rq_inl_buf.wqe_list);
 857
 858 err_out:
 859         return ret;
 860 }
 861
 862 struct ib_qp *hns_roce_create_qp(struct ib_pd *pd,
 863                                  struct ib_qp_init_attr *init_attr,
 864                                  struct ib_udata *udata)
 865 {
 866         struct hns_roce_dev *hr_dev = to_hr_dev(pd->device);
 867         struct device *dev = hr_dev->dev;
 868         struct hns_roce_sqp *hr_sqp;
 869         struct hns_roce_qp *hr_qp;
 870         int ret;
 871
 872         switch (init_attr->qp_type) {
 873         case IB_QPT_RC: {
 874                 hr_qp = kzalloc(sizeof(*hr_qp), GFP_KERNEL);
 875                 if (!hr_qp)
 876                         return ERR_PTR(-ENOMEM);
 877
 878                 ret = hns_roce_create_qp_common(hr_dev, pd, init_attr, udata, 0,
 879                                                 hr_qp);
 880                 if (ret) {
 881                         dev_err(dev, "Create RC QP failed\n");
 882                         kfree(hr_qp);
 883                         return ERR_PTR(ret);
 884                 }
 885
 886                 hr_qp->ibqp.qp_num = hr_qp->qpn;
 887
 888                 break;
 889         }
 890         case IB_QPT_GSI: {
 891                 /* Userspace is not allowed to create special QPs: */
 892                 if (pd->uobject) {
 893                         dev_err(dev, "not support usr space GSI\n");
 894                         return ERR_PTR(-EINVAL);
 895                 }
 896
 897                 hr_sqp = kzalloc(sizeof(*hr_sqp), GFP_KERNEL);
 898                 if (!hr_sqp)
 899                         return ERR_PTR(-ENOMEM);
 900
 901                 hr_qp = &hr_sqp->hr_qp;
 902                 hr_qp->port = init_attr->port_num - 1;
 903                 hr_qp->phy_port = hr_dev->iboe.phy_port[hr_qp->port];
 904
 905                 /* when hw version is v1, the sqpn is allocated */
 906                 if (hr_dev->caps.max_sq_sg <= 2)
 907                         hr_qp->ibqp.qp_num = HNS_ROCE_MAX_PORTS +
 908                                              hr_dev->iboe.phy_port[hr_qp->port];
 909                 else
 910                         hr_qp->ibqp.qp_num = 1;
 911
 912                 ret = hns_roce_create_qp_common(hr_dev, pd, init_attr, udata,
 913                                                 hr_qp->ibqp.qp_num, hr_qp);
 914                 if (ret) {
 915                         dev_err(dev, "Create GSI QP failed!\n");
 916                         kfree(hr_sqp);
 917                         return ERR_PTR(ret);
 918                 }
 919
 920                 break;
 921         }
 922         default:{
 923                 dev_err(dev, "not support QP type %d\n", init_attr->qp_type);
 924                 return ERR_PTR(-EINVAL);
 925         }
 926         }
 927
 928         return &hr_qp->ibqp;
 929 }
 930 EXPORT_SYMBOL_GPL(hns_roce_create_qp);
 931
 932 int to_hr_qp_type(int qp_type)
 933 {
 934         int transport_type;
 935
 936         if (qp_type == IB_QPT_RC)
 937                 transport_type = SERV_TYPE_RC;
 938         else if (qp_type == IB_QPT_UC)
 939                 transport_type = SERV_TYPE_UC;
 940         else if (qp_type == IB_QPT_UD)
 941                 transport_type = SERV_TYPE_UD;
 942         else if (qp_type == IB_QPT_GSI)
 943                 transport_type = SERV_TYPE_UD;
 944         else
 945                 transport_type = -1;
 946
 947         return transport_type;
 948 }
 949 EXPORT_SYMBOL_GPL(to_hr_qp_type);
 950
 951 int hns_roce_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
 952                        int attr_mask, struct ib_udata *udata)
 953 {
 954         struct hns_roce_dev *hr_dev = to_hr_dev(ibqp->device);
 955         struct hns_roce_qp *hr_qp = to_hr_qp(ibqp);
 956         enum ib_qp_state cur_state, new_state;
 957         struct device *dev = hr_dev->dev;
 958         int ret = -EINVAL;
 959         int p;
 960         enum ib_mtu active_mtu;
 961
 962         mutex_lock(&hr_qp->mutex);
 963
 964         cur_state = attr_mask & IB_QP_CUR_STATE ?
 965                     attr->cur_qp_state : (enum ib_qp_state)hr_qp->state;
 966         new_state = attr_mask & IB_QP_STATE ?
 967                     attr->qp_state : cur_state;
 968
 969         if (ibqp->uobject &&
 970             (attr_mask & IB_QP_STATE) && new_state == IB_QPS_ERR) {
 971                 if (hr_qp->sdb_en == 1) {
 972                         hr_qp->sq.head = *(int *)(hr_qp->sdb.virt_addr);
 973                         hr_qp->rq.head = *(int *)(hr_qp->rdb.virt_addr);
 974                 } else {
 975                         dev_warn(dev, "flush cqe is not supported in userspace!\n");
 976                         goto out;
 977                 }
 978         }
 979
 980         if (!ib_modify_qp_is_ok(cur_state, new_state, ibqp->qp_type,
 981                                 attr_mask)) {
 982                 dev_err(dev, "ib_modify_qp_is_ok failed\n");
 983                 goto out;
 984         }
 985
 986         if ((attr_mask & IB_QP_PORT) &&
 987             (attr->port_num == 0 || attr->port_num > hr_dev->caps.num_ports)) {
 988                 dev_err(dev, "attr port_num invalid.attr->port_num=%d\n",
 989                         attr->port_num);
 990                 goto out;
 991         }
 992
 993         if (attr_mask & IB_QP_PKEY_INDEX) {
 994                 p = attr_mask & IB_QP_PORT ? (attr->port_num - 1) : hr_qp->port;
 995                 if (attr->pkey_index >= hr_dev->caps.pkey_table_len[p]) {
 996                         dev_err(dev, "attr pkey_index invalid.attr->pkey_index=%d\n",
 997                                 attr->pkey_index);
 998                         goto out;
 999                 }
1000         }
1001
1002         if (attr_mask & IB_QP_PATH_MTU) {
1003                 p = attr_mask & IB_QP_PORT ? (attr->port_num - 1) : hr_qp->port;
1004                 active_mtu = iboe_get_mtu(hr_dev->iboe.netdevs[p]->mtu);
1005
1006                 if ((hr_dev->caps.max_mtu == IB_MTU_4096 &&
1007                     attr->path_mtu > IB_MTU_4096) ||
1008                     (hr_dev->caps.max_mtu == IB_MTU_2048 &&
1009                     attr->path_mtu > IB_MTU_2048) ||
1010                     attr->path_mtu < IB_MTU_256 ||
1011                     attr->path_mtu > active_mtu) {
1012                         dev_err(dev, "attr path_mtu(%d)invalid while modify qp",
1013                                 attr->path_mtu);
1014                         goto out;
1015                 }
1016         }
1017
1018         if (attr_mask & IB_QP_MAX_QP_RD_ATOMIC &&
1019             attr->max_rd_atomic > hr_dev->caps.max_qp_init_rdma) {
1020                 dev_err(dev, "attr max_rd_atomic invalid.attr->max_rd_atomic=%d\n",
1021                         attr->max_rd_atomic);
1022                 goto out;
1023         }
1024
1025         if (attr_mask & IB_QP_MAX_DEST_RD_ATOMIC &&
1026             attr->max_dest_rd_atomic > hr_dev->caps.max_qp_dest_rdma) {
1027                 dev_err(dev, "attr max_dest_rd_atomic invalid.attr->max_dest_rd_atomic=%d\n",
1028                         attr->max_dest_rd_atomic);
1029                 goto out;
1030         }
1031
1032         if (cur_state == new_state && cur_state == IB_QPS_RESET) {
1033                 if (hr_dev->caps.min_wqes) {
1034                         ret = -EPERM;
1035                         dev_err(dev, "cur_state=%d new_state=%d\n", cur_state,
1036                                 new_state);
1037                 } else {
1038                         ret = 0;
1039                 }
1040
1041                 goto out;
1042         }
1043
1044         ret = hr_dev->hw->modify_qp(ibqp, attr, attr_mask, cur_state,
1045                                     new_state);
1046
1047 out:
1048         mutex_unlock(&hr_qp->mutex);
1049
1050         return ret;
1051 }
1052
1053 void hns_roce_lock_cqs(struct hns_roce_cq *send_cq, struct hns_roce_cq *recv_cq)
1054                        __acquires(&send_cq->lock) __acquires(&recv_cq->lock)
1055 {
1056         if (send_cq == recv_cq) {
1057                 spin_lock_irq(&send_cq->lock);
1058                 __acquire(&recv_cq->lock);
1059         } else if (send_cq->cqn < recv_cq->cqn) {
1060                 spin_lock_irq(&send_cq->lock);
1061                 spin_lock_nested(&recv_cq->lock, SINGLE_DEPTH_NESTING);
1062         } else {
1063                 spin_lock_irq(&recv_cq->lock);
1064                 spin_lock_nested(&send_cq->lock, SINGLE_DEPTH_NESTING);
1065         }
1066 }
1067 EXPORT_SYMBOL_GPL(hns_roce_lock_cqs);
1068
1069 void hns_roce_unlock_cqs(struct hns_roce_cq *send_cq,
1070                          struct hns_roce_cq *recv_cq) __releases(&send_cq->lock)
1071                          __releases(&recv_cq->lock)
1072 {
1073         if (send_cq == recv_cq) {
1074                 __release(&recv_cq->lock);
1075                 spin_unlock_irq(&send_cq->lock);
1076         } else if (send_cq->cqn < recv_cq->cqn) {
1077                 spin_unlock(&recv_cq->lock);
1078                 spin_unlock_irq(&send_cq->lock);
1079         } else {
1080                 spin_unlock(&send_cq->lock);
1081                 spin_unlock_irq(&recv_cq->lock);
1082         }
1083 }
1084 EXPORT_SYMBOL_GPL(hns_roce_unlock_cqs);
1085
1086 static void *get_wqe(struct hns_roce_qp *hr_qp, int offset)
1087 {
1088
1089         return hns_roce_buf_offset(&hr_qp->hr_buf, offset);
1090 }
1091
1092 void *get_recv_wqe(struct hns_roce_qp *hr_qp, int n)
1093 {
1094         return get_wqe(hr_qp, hr_qp->rq.offset + (n << hr_qp->rq.wqe_shift));
1095 }
1096 EXPORT_SYMBOL_GPL(get_recv_wqe);
1097
1098 void *get_send_wqe(struct hns_roce_qp *hr_qp, int n)
1099 {
1100         return get_wqe(hr_qp, hr_qp->sq.offset + (n << hr_qp->sq.wqe_shift));
1101 }
1102 EXPORT_SYMBOL_GPL(get_send_wqe);
1103
1104 void *get_send_extend_sge(struct hns_roce_qp *hr_qp, int n)
1105 {
1106         return hns_roce_buf_offset(&hr_qp->hr_buf, hr_qp->sge.offset +
1107                                         (n << hr_qp->sge.sge_shift));
1108 }
1109 EXPORT_SYMBOL_GPL(get_send_extend_sge);
1110
1111 bool hns_roce_wq_overflow(struct hns_roce_wq *hr_wq, int nreq,
1112                           struct ib_cq *ib_cq)
1113 {
1114         struct hns_roce_cq *hr_cq;
1115         u32 cur;
1116
1117         cur = hr_wq->head - hr_wq->tail;
1118         if (likely(cur + nreq < hr_wq->max_post))
1119                 return false;
1120
1121         hr_cq = to_hr_cq(ib_cq);
1122         spin_lock(&hr_cq->lock);
1123         cur = hr_wq->head - hr_wq->tail;
1124         spin_unlock(&hr_cq->lock);
1125
1126         return cur + nreq >= hr_wq->max_post;
1127 }
1128 EXPORT_SYMBOL_GPL(hns_roce_wq_overflow);
1129
1130 int hns_roce_init_qp_table(struct hns_roce_dev *hr_dev)
1131 {
1132         struct hns_roce_qp_table *qp_table = &hr_dev->qp_table;
1133         int reserved_from_top = 0;
1134         int reserved_from_bot;
1135         int ret;
1136
1137         spin_lock_init(&qp_table->lock);
1138         INIT_RADIX_TREE(&hr_dev->qp_table_tree, GFP_ATOMIC);
1139
1140         /* In hw v1, a port include two SQP, six ports total 12 */
1141         if (hr_dev->caps.max_sq_sg <= 2)
1142                 reserved_from_bot = SQP_NUM;
1143         else
1144                 reserved_from_bot = hr_dev->caps.reserved_qps;
1145
1146         ret = hns_roce_bitmap_init(&qp_table->bitmap, hr_dev->caps.num_qps,
1147                                    hr_dev->caps.num_qps - 1, reserved_from_bot,
1148                                    reserved_from_top);
1149         if (ret) {
1150                 dev_err(hr_dev->dev, "qp bitmap init failed!error=%d\n",
1151                         ret);
1152                 return ret;
1153         }
1154
1155         return 0;
1156 }
1157
1158 void hns_roce_cleanup_qp_table(struct hns_roce_dev *hr_dev)
1159 {
1160         hns_roce_bitmap_cleanup(&hr_dev->qp_table.bitmap);
1161 }