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